ViewRootImpl.java revision 67254723297442a7ac6a2479ec7f72f38f310c3c
1/* 2 * Copyright (C) 2006 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.view; 18 19import static android.view.WindowCallbacks.RESIZE_MODE_DOCKED_DIVIDER; 20import static android.view.WindowCallbacks.RESIZE_MODE_FREEFORM; 21import static android.view.WindowManager.LayoutParams.PRIVATE_FLAG_FORCE_DECOR_VIEW_VISIBILITY; 22import static android.view.WindowManager.LayoutParams.TYPE_DOCK_DIVIDER; 23import static android.view.WindowManager.LayoutParams.TYPE_INPUT_METHOD; 24import static android.view.WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL; 25import static android.view.WindowManager.LayoutParams.TYPE_VOLUME_OVERLAY; 26 27import android.Manifest; 28import android.animation.LayoutTransition; 29import android.app.ActivityManagerNative; 30import android.content.ClipDescription; 31import android.content.ComponentCallbacks; 32import android.content.Context; 33import android.content.pm.PackageManager; 34import android.content.res.CompatibilityInfo; 35import android.content.res.Configuration; 36import android.content.res.Resources; 37import android.graphics.Canvas; 38import android.graphics.Matrix; 39import android.graphics.PixelFormat; 40import android.graphics.Point; 41import android.graphics.PointF; 42import android.graphics.PorterDuff; 43import android.graphics.Rect; 44import android.graphics.Region; 45import android.graphics.drawable.Drawable; 46import android.hardware.display.DisplayManager; 47import android.hardware.display.DisplayManager.DisplayListener; 48import android.hardware.input.InputManager; 49import android.media.AudioManager; 50import android.os.Binder; 51import android.os.Build; 52import android.os.Bundle; 53import android.os.Debug; 54import android.os.Handler; 55import android.os.Looper; 56import android.os.Message; 57import android.os.ParcelFileDescriptor; 58import android.os.Process; 59import android.os.RemoteException; 60import android.os.SystemClock; 61import android.os.SystemProperties; 62import android.os.Trace; 63import android.util.AndroidRuntimeException; 64import android.util.DisplayMetrics; 65import android.util.Log; 66import android.util.Slog; 67import android.util.TimeUtils; 68import android.util.TypedValue; 69import android.view.Surface.OutOfResourcesException; 70import android.view.View.AttachInfo; 71import android.view.View.MeasureSpec; 72import android.view.accessibility.AccessibilityEvent; 73import android.view.accessibility.AccessibilityManager; 74import android.view.accessibility.AccessibilityManager.AccessibilityStateChangeListener; 75import android.view.accessibility.AccessibilityManager.HighTextContrastChangeListener; 76import android.view.accessibility.AccessibilityNodeInfo; 77import android.view.accessibility.AccessibilityNodeInfo.AccessibilityAction; 78import android.view.accessibility.AccessibilityNodeProvider; 79import android.view.accessibility.IAccessibilityInteractionConnection; 80import android.view.accessibility.IAccessibilityInteractionConnectionCallback; 81import android.view.animation.AccelerateDecelerateInterpolator; 82import android.view.animation.Interpolator; 83import android.view.inputmethod.InputMethodManager; 84import android.widget.Scroller; 85 86import com.android.internal.R; 87import com.android.internal.annotations.GuardedBy; 88import com.android.internal.os.IResultReceiver; 89import com.android.internal.os.SomeArgs; 90import com.android.internal.policy.PhoneFallbackEventHandler; 91import com.android.internal.view.BaseSurfaceHolder; 92import com.android.internal.view.RootViewSurfaceTaker; 93 94import java.io.FileDescriptor; 95import java.io.IOException; 96import java.io.OutputStream; 97import java.io.PrintWriter; 98import java.lang.ref.WeakReference; 99import java.util.ArrayList; 100import java.util.HashSet; 101import java.util.concurrent.CountDownLatch; 102 103/** 104 * The top of a view hierarchy, implementing the needed protocol between View 105 * and the WindowManager. This is for the most part an internal implementation 106 * detail of {@link WindowManagerGlobal}. 107 * 108 * {@hide} 109 */ 110@SuppressWarnings({"EmptyCatchBlock", "PointlessBooleanExpression"}) 111public final class ViewRootImpl implements ViewParent, 112 View.AttachInfo.Callbacks, ThreadedRenderer.HardwareDrawCallbacks { 113 private static final String TAG = "ViewRootImpl"; 114 private static final boolean DBG = false; 115 private static final boolean LOCAL_LOGV = false; 116 /** @noinspection PointlessBooleanExpression*/ 117 private static final boolean DEBUG_DRAW = false || LOCAL_LOGV; 118 private static final boolean DEBUG_LAYOUT = false || LOCAL_LOGV; 119 private static final boolean DEBUG_DIALOG = false || LOCAL_LOGV; 120 private static final boolean DEBUG_INPUT_RESIZE = false || LOCAL_LOGV; 121 private static final boolean DEBUG_ORIENTATION = false || LOCAL_LOGV; 122 private static final boolean DEBUG_TRACKBALL = false || LOCAL_LOGV; 123 private static final boolean DEBUG_IMF = false || LOCAL_LOGV; 124 private static final boolean DEBUG_CONFIGURATION = false || LOCAL_LOGV; 125 private static final boolean DEBUG_FPS = false; 126 private static final boolean DEBUG_INPUT_STAGES = false || LOCAL_LOGV; 127 private static final boolean DEBUG_KEEP_SCREEN_ON = false || LOCAL_LOGV; 128 129 /** 130 * Set to false if we do not want to use the multi threaded renderer. Note that by disabling 131 * this, WindowCallbacks will not fire. 132 */ 133 private static final boolean USE_MT_RENDERER = true; 134 135 /** 136 * Set this system property to true to force the view hierarchy to render 137 * at 60 Hz. This can be used to measure the potential framerate. 138 */ 139 private static final String PROPERTY_PROFILE_RENDERING = "viewroot.profile_rendering"; 140 141 // properties used by emulator to determine display shape 142 public static final String PROPERTY_EMULATOR_WIN_OUTSET_BOTTOM_PX = 143 "ro.emu.win_outset_bottom_px"; 144 145 /** 146 * Maximum time we allow the user to roll the trackball enough to generate 147 * a key event, before resetting the counters. 148 */ 149 static final int MAX_TRACKBALL_DELAY = 250; 150 151 static final ThreadLocal<HandlerActionQueue> sRunQueues = new ThreadLocal<HandlerActionQueue>(); 152 153 static final ArrayList<Runnable> sFirstDrawHandlers = new ArrayList(); 154 static boolean sFirstDrawComplete = false; 155 156 static final ArrayList<ComponentCallbacks> sConfigCallbacks = new ArrayList(); 157 158 /** 159 * This list must only be modified by the main thread, so a lock is only needed when changing 160 * the list or when accessing the list from a non-main thread. 161 */ 162 @GuardedBy("mWindowCallbacks") 163 final ArrayList<WindowCallbacks> mWindowCallbacks = new ArrayList<>(); 164 final Context mContext; 165 final IWindowSession mWindowSession; 166 final Display mDisplay; 167 final DisplayManager mDisplayManager; 168 final String mBasePackageName; 169 170 final int[] mTmpLocation = new int[2]; 171 172 final TypedValue mTmpValue = new TypedValue(); 173 174 final Thread mThread; 175 176 final WindowLeaked mLocation; 177 178 final WindowManager.LayoutParams mWindowAttributes = new WindowManager.LayoutParams(); 179 180 final W mWindow; 181 182 final int mTargetSdkVersion; 183 184 int mSeq; 185 186 View mView; 187 188 View mAccessibilityFocusedHost; 189 AccessibilityNodeInfo mAccessibilityFocusedVirtualView; 190 191 // The view which captures mouse input, or null when no one is capturing. 192 View mCapturingView; 193 194 int mViewVisibility; 195 boolean mAppVisible = true; 196 // For recents to freeform transition we need to keep drawing after the app receives information 197 // that it became invisible. This will ignore that information and depend on the decor view 198 // visibility to control drawing. The decor view visibility will get adjusted when the app get 199 // stopped and that's when the app will stop drawing further frames. 200 private boolean mForceDecorViewVisibility = false; 201 int mOrigWindowType = -1; 202 203 /** Whether the window had focus during the most recent traversal. */ 204 boolean mHadWindowFocus; 205 206 /** 207 * Whether the window lost focus during a previous traversal and has not 208 * yet gained it back. Used to determine whether a WINDOW_STATE_CHANGE 209 * accessibility events should be sent during traversal. 210 */ 211 boolean mLostWindowFocus; 212 213 // Set to true if the owner of this window is in the stopped state, 214 // so the window should no longer be active. 215 boolean mStopped = false; 216 217 // Set to true if the owner of this window is in ambient mode, 218 // which means it won't receive input events. 219 boolean mIsAmbientMode = false; 220 221 // Set to true to stop input during an Activity Transition. 222 boolean mPausedForTransition = false; 223 224 boolean mLastInCompatMode = false; 225 226 SurfaceHolder.Callback2 mSurfaceHolderCallback; 227 BaseSurfaceHolder mSurfaceHolder; 228 boolean mIsCreating; 229 boolean mDrawingAllowed; 230 231 final Region mTransparentRegion; 232 final Region mPreviousTransparentRegion; 233 234 int mWidth; 235 int mHeight; 236 Rect mDirty; 237 boolean mIsAnimating; 238 239 private boolean mDragResizing; 240 private boolean mInvalidateRootRequested; 241 private int mResizeMode; 242 private int mCanvasOffsetX; 243 private int mCanvasOffsetY; 244 private boolean mActivityRelaunched; 245 246 CompatibilityInfo.Translator mTranslator; 247 248 final View.AttachInfo mAttachInfo; 249 InputChannel mInputChannel; 250 InputQueue.Callback mInputQueueCallback; 251 InputQueue mInputQueue; 252 FallbackEventHandler mFallbackEventHandler; 253 Choreographer mChoreographer; 254 255 final Rect mTempRect; // used in the transaction to not thrash the heap. 256 final Rect mVisRect; // used to retrieve visible rect of focused view. 257 258 boolean mTraversalScheduled; 259 int mTraversalBarrier; 260 boolean mWillDrawSoon; 261 /** Set to true while in performTraversals for detecting when die(true) is called from internal 262 * callbacks such as onMeasure, onPreDraw, onDraw and deferring doDie() until later. */ 263 boolean mIsInTraversal; 264 boolean mApplyInsetsRequested; 265 boolean mLayoutRequested; 266 boolean mFirst; 267 boolean mReportNextDraw; 268 boolean mFullRedrawNeeded; 269 boolean mNewSurfaceNeeded; 270 boolean mHasHadWindowFocus; 271 boolean mLastWasImTarget; 272 boolean mForceNextWindowRelayout; 273 CountDownLatch mWindowDrawCountDown; 274 275 boolean mIsDrawing; 276 int mLastSystemUiVisibility; 277 int mClientWindowLayoutFlags; 278 boolean mLastOverscanRequested; 279 280 // Pool of queued input events. 281 private static final int MAX_QUEUED_INPUT_EVENT_POOL_SIZE = 10; 282 private QueuedInputEvent mQueuedInputEventPool; 283 private int mQueuedInputEventPoolSize; 284 285 /* Input event queue. 286 * Pending input events are input events waiting to be delivered to the input stages 287 * and handled by the application. 288 */ 289 QueuedInputEvent mPendingInputEventHead; 290 QueuedInputEvent mPendingInputEventTail; 291 int mPendingInputEventCount; 292 boolean mProcessInputEventsScheduled; 293 boolean mUnbufferedInputDispatch; 294 String mPendingInputEventQueueLengthCounterName = "pq"; 295 296 InputStage mFirstInputStage; 297 InputStage mFirstPostImeInputStage; 298 InputStage mSyntheticInputStage; 299 300 boolean mWindowAttributesChanged = false; 301 int mWindowAttributesChangesFlag = 0; 302 303 // These can be accessed by any thread, must be protected with a lock. 304 // Surface can never be reassigned or cleared (use Surface.clear()). 305 final Surface mSurface = new Surface(); 306 307 boolean mAdded; 308 boolean mAddedTouchMode; 309 310 final DisplayAdjustments mDisplayAdjustments; 311 312 // These are accessed by multiple threads. 313 final Rect mWinFrame; // frame given by window manager. 314 315 final Rect mPendingOverscanInsets = new Rect(); 316 final Rect mPendingVisibleInsets = new Rect(); 317 final Rect mPendingStableInsets = new Rect(); 318 final Rect mPendingContentInsets = new Rect(); 319 final Rect mPendingOutsets = new Rect(); 320 final Rect mPendingBackDropFrame = new Rect(); 321 boolean mPendingAlwaysConsumeNavBar; 322 final ViewTreeObserver.InternalInsetsInfo mLastGivenInsets 323 = new ViewTreeObserver.InternalInsetsInfo(); 324 325 final Rect mDispatchContentInsets = new Rect(); 326 final Rect mDispatchStableInsets = new Rect(); 327 328 private WindowInsets mLastWindowInsets; 329 330 final Configuration mLastConfiguration = new Configuration(); 331 final Configuration mPendingConfiguration = new Configuration(); 332 333 boolean mScrollMayChange; 334 int mSoftInputMode; 335 WeakReference<View> mLastScrolledFocus; 336 int mScrollY; 337 int mCurScrollY; 338 Scroller mScroller; 339 static final Interpolator mResizeInterpolator = new AccelerateDecelerateInterpolator(); 340 private ArrayList<LayoutTransition> mPendingTransitions; 341 342 final ViewConfiguration mViewConfiguration; 343 344 /* Drag/drop */ 345 ClipDescription mDragDescription; 346 View mCurrentDragView; 347 volatile Object mLocalDragState; 348 final PointF mDragPoint = new PointF(); 349 final PointF mLastTouchPoint = new PointF(); 350 int mLastTouchSource; 351 352 private boolean mProfileRendering; 353 private Choreographer.FrameCallback mRenderProfiler; 354 private boolean mRenderProfilingEnabled; 355 356 // Variables to track frames per second, enabled via DEBUG_FPS flag 357 private long mFpsStartTime = -1; 358 private long mFpsPrevTime = -1; 359 private int mFpsNumFrames; 360 361 private int mPointerIconType = PointerIcon.TYPE_NOT_SPECIFIED; 362 private PointerIcon mCustomPointerIcon = null; 363 364 /** 365 * see {@link #playSoundEffect(int)} 366 */ 367 AudioManager mAudioManager; 368 369 final AccessibilityManager mAccessibilityManager; 370 371 AccessibilityInteractionController mAccessibilityInteractionController; 372 373 AccessibilityInteractionConnectionManager mAccessibilityInteractionConnectionManager; 374 HighContrastTextManager mHighContrastTextManager; 375 376 SendWindowContentChangedAccessibilityEvent mSendWindowContentChangedAccessibilityEvent; 377 378 HashSet<View> mTempHashSet; 379 380 private final int mDensity; 381 private final int mNoncompatDensity; 382 383 private boolean mInLayout = false; 384 ArrayList<View> mLayoutRequesters = new ArrayList<View>(); 385 boolean mHandlingLayoutInLayoutRequest = false; 386 387 private int mViewLayoutDirectionInitial; 388 389 /** Set to true once doDie() has been called. */ 390 private boolean mRemoved; 391 392 private boolean mNeedsHwRendererSetup; 393 394 /** 395 * Consistency verifier for debugging purposes. 396 */ 397 protected final InputEventConsistencyVerifier mInputEventConsistencyVerifier = 398 InputEventConsistencyVerifier.isInstrumentationEnabled() ? 399 new InputEventConsistencyVerifier(this, 0) : null; 400 401 static final class SystemUiVisibilityInfo { 402 int seq; 403 int globalVisibility; 404 int localValue; 405 int localChanges; 406 } 407 408 private String mTag = TAG; 409 410 public ViewRootImpl(Context context, Display display) { 411 mContext = context; 412 mWindowSession = WindowManagerGlobal.getWindowSession(); 413 mDisplay = display; 414 mBasePackageName = context.getBasePackageName(); 415 416 mDisplayAdjustments = display.getDisplayAdjustments(); 417 418 mThread = Thread.currentThread(); 419 mLocation = new WindowLeaked(null); 420 mLocation.fillInStackTrace(); 421 mWidth = -1; 422 mHeight = -1; 423 mDirty = new Rect(); 424 mTempRect = new Rect(); 425 mVisRect = new Rect(); 426 mWinFrame = new Rect(); 427 mWindow = new W(this); 428 mTargetSdkVersion = context.getApplicationInfo().targetSdkVersion; 429 mViewVisibility = View.GONE; 430 mTransparentRegion = new Region(); 431 mPreviousTransparentRegion = new Region(); 432 mFirst = true; // true for the first time the view is added 433 mAdded = false; 434 mAttachInfo = new View.AttachInfo(mWindowSession, mWindow, display, this, mHandler, this); 435 mAccessibilityManager = AccessibilityManager.getInstance(context); 436 mAccessibilityInteractionConnectionManager = 437 new AccessibilityInteractionConnectionManager(); 438 mAccessibilityManager.addAccessibilityStateChangeListener( 439 mAccessibilityInteractionConnectionManager); 440 mHighContrastTextManager = new HighContrastTextManager(); 441 mAccessibilityManager.addHighTextContrastStateChangeListener( 442 mHighContrastTextManager); 443 mViewConfiguration = ViewConfiguration.get(context); 444 mDensity = context.getResources().getDisplayMetrics().densityDpi; 445 mNoncompatDensity = context.getResources().getDisplayMetrics().noncompatDensityDpi; 446 mFallbackEventHandler = new PhoneFallbackEventHandler(context); 447 mChoreographer = Choreographer.getInstance(); 448 mDisplayManager = (DisplayManager)context.getSystemService(Context.DISPLAY_SERVICE); 449 loadSystemProperties(); 450 } 451 452 public static void addFirstDrawHandler(Runnable callback) { 453 synchronized (sFirstDrawHandlers) { 454 if (!sFirstDrawComplete) { 455 sFirstDrawHandlers.add(callback); 456 } 457 } 458 } 459 460 public static void addConfigCallback(ComponentCallbacks callback) { 461 synchronized (sConfigCallbacks) { 462 sConfigCallbacks.add(callback); 463 } 464 } 465 466 public void addWindowCallbacks(WindowCallbacks callback) { 467 if (USE_MT_RENDERER) { 468 synchronized (mWindowCallbacks) { 469 mWindowCallbacks.add(callback); 470 } 471 } 472 } 473 474 public void removeWindowCallbacks(WindowCallbacks callback) { 475 if (USE_MT_RENDERER) { 476 synchronized (mWindowCallbacks) { 477 mWindowCallbacks.remove(callback); 478 } 479 } 480 } 481 482 public void reportDrawFinish() { 483 if (mWindowDrawCountDown != null) { 484 mWindowDrawCountDown.countDown(); 485 } 486 } 487 488 // FIXME for perf testing only 489 private boolean mProfile = false; 490 491 /** 492 * Call this to profile the next traversal call. 493 * FIXME for perf testing only. Remove eventually 494 */ 495 public void profile() { 496 mProfile = true; 497 } 498 499 /** 500 * Indicates whether we are in touch mode. Calling this method triggers an IPC 501 * call and should be avoided whenever possible. 502 * 503 * @return True, if the device is in touch mode, false otherwise. 504 * 505 * @hide 506 */ 507 static boolean isInTouchMode() { 508 IWindowSession windowSession = WindowManagerGlobal.peekWindowSession(); 509 if (windowSession != null) { 510 try { 511 return windowSession.getInTouchMode(); 512 } catch (RemoteException e) { 513 } 514 } 515 return false; 516 } 517 518 /** 519 * Notifies us that our child has been rebuilt, following 520 * a window preservation operation. In these cases we 521 * keep the same DecorView, but the activity controlling it 522 * is a different instance, and we need to update our 523 * callbacks. 524 * 525 * @hide 526 */ 527 public void notifyChildRebuilt() { 528 if (mView instanceof RootViewSurfaceTaker) { 529 mSurfaceHolderCallback = 530 ((RootViewSurfaceTaker)mView).willYouTakeTheSurface(); 531 if (mSurfaceHolderCallback != null) { 532 mSurfaceHolder = new TakenSurfaceHolder(); 533 mSurfaceHolder.setFormat(PixelFormat.UNKNOWN); 534 } else { 535 mSurfaceHolder = null; 536 } 537 538 mInputQueueCallback = 539 ((RootViewSurfaceTaker)mView).willYouTakeTheInputQueue(); 540 if (mInputQueueCallback != null) { 541 mInputQueueCallback.onInputQueueCreated(mInputQueue); 542 } 543 } 544 } 545 546 /** 547 * We have one child 548 */ 549 public void setView(View view, WindowManager.LayoutParams attrs, View panelParentView) { 550 synchronized (this) { 551 if (mView == null) { 552 mView = view; 553 554 mAttachInfo.mDisplayState = mDisplay.getState(); 555 mDisplayManager.registerDisplayListener(mDisplayListener, mHandler); 556 557 mViewLayoutDirectionInitial = mView.getRawLayoutDirection(); 558 mFallbackEventHandler.setView(view); 559 mWindowAttributes.copyFrom(attrs); 560 if (mWindowAttributes.packageName == null) { 561 mWindowAttributes.packageName = mBasePackageName; 562 } 563 attrs = mWindowAttributes; 564 setTag(); 565 566 if (DEBUG_KEEP_SCREEN_ON && (mClientWindowLayoutFlags 567 & WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON) != 0 568 && (attrs.flags&WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON) == 0) { 569 Slog.d(mTag, "setView: FLAG_KEEP_SCREEN_ON changed from true to false!"); 570 } 571 // Keep track of the actual window flags supplied by the client. 572 mClientWindowLayoutFlags = attrs.flags; 573 574 setAccessibilityFocus(null, null); 575 576 if (view instanceof RootViewSurfaceTaker) { 577 mSurfaceHolderCallback = 578 ((RootViewSurfaceTaker)view).willYouTakeTheSurface(); 579 if (mSurfaceHolderCallback != null) { 580 mSurfaceHolder = new TakenSurfaceHolder(); 581 mSurfaceHolder.setFormat(PixelFormat.UNKNOWN); 582 } 583 } 584 585 // Compute surface insets required to draw at specified Z value. 586 // TODO: Use real shadow insets for a constant max Z. 587 if (!attrs.hasManualSurfaceInsets) { 588 attrs.setSurfaceInsets(view, false /*manual*/, true /*preservePrevious*/); 589 } 590 591 CompatibilityInfo compatibilityInfo = mDisplayAdjustments.getCompatibilityInfo(); 592 mTranslator = compatibilityInfo.getTranslator(); 593 594 // If the application owns the surface, don't enable hardware acceleration 595 if (mSurfaceHolder == null) { 596 enableHardwareAcceleration(attrs); 597 } 598 599 boolean restore = false; 600 if (mTranslator != null) { 601 mSurface.setCompatibilityTranslator(mTranslator); 602 restore = true; 603 attrs.backup(); 604 mTranslator.translateWindowLayout(attrs); 605 } 606 if (DEBUG_LAYOUT) Log.d(mTag, "WindowLayout in setView:" + attrs); 607 608 if (!compatibilityInfo.supportsScreen()) { 609 attrs.privateFlags |= WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 610 mLastInCompatMode = true; 611 } 612 613 mSoftInputMode = attrs.softInputMode; 614 mWindowAttributesChanged = true; 615 mWindowAttributesChangesFlag = WindowManager.LayoutParams.EVERYTHING_CHANGED; 616 mAttachInfo.mRootView = view; 617 mAttachInfo.mScalingRequired = mTranslator != null; 618 mAttachInfo.mApplicationScale = 619 mTranslator == null ? 1.0f : mTranslator.applicationScale; 620 if (panelParentView != null) { 621 mAttachInfo.mPanelParentWindowToken 622 = panelParentView.getApplicationWindowToken(); 623 } 624 mAdded = true; 625 int res; /* = WindowManagerImpl.ADD_OKAY; */ 626 627 // Schedule the first layout -before- adding to the window 628 // manager, to make sure we do the relayout before receiving 629 // any other events from the system. 630 requestLayout(); 631 if ((mWindowAttributes.inputFeatures 632 & WindowManager.LayoutParams.INPUT_FEATURE_NO_INPUT_CHANNEL) == 0) { 633 mInputChannel = new InputChannel(); 634 } 635 mForceDecorViewVisibility = (mWindowAttributes.privateFlags 636 & PRIVATE_FLAG_FORCE_DECOR_VIEW_VISIBILITY) != 0; 637 try { 638 mOrigWindowType = mWindowAttributes.type; 639 mAttachInfo.mRecomputeGlobalAttributes = true; 640 collectViewAttributes(); 641 res = mWindowSession.addToDisplay(mWindow, mSeq, mWindowAttributes, 642 getHostVisibility(), mDisplay.getDisplayId(), 643 mAttachInfo.mContentInsets, mAttachInfo.mStableInsets, 644 mAttachInfo.mOutsets, mInputChannel); 645 } catch (RemoteException e) { 646 mAdded = false; 647 mView = null; 648 mAttachInfo.mRootView = null; 649 mInputChannel = null; 650 mFallbackEventHandler.setView(null); 651 unscheduleTraversals(); 652 setAccessibilityFocus(null, null); 653 throw new RuntimeException("Adding window failed", e); 654 } finally { 655 if (restore) { 656 attrs.restore(); 657 } 658 } 659 660 if (mTranslator != null) { 661 mTranslator.translateRectInScreenToAppWindow(mAttachInfo.mContentInsets); 662 } 663 mPendingOverscanInsets.set(0, 0, 0, 0); 664 mPendingContentInsets.set(mAttachInfo.mContentInsets); 665 mPendingStableInsets.set(mAttachInfo.mStableInsets); 666 mPendingVisibleInsets.set(0, 0, 0, 0); 667 mAttachInfo.mAlwaysConsumeNavBar = 668 (res & WindowManagerGlobal.ADD_FLAG_ALWAYS_CONSUME_NAV_BAR) != 0; 669 mPendingAlwaysConsumeNavBar = mAttachInfo.mAlwaysConsumeNavBar; 670 if (DEBUG_LAYOUT) Log.v(mTag, "Added window " + mWindow); 671 if (res < WindowManagerGlobal.ADD_OKAY) { 672 mAttachInfo.mRootView = null; 673 mAdded = false; 674 mFallbackEventHandler.setView(null); 675 unscheduleTraversals(); 676 setAccessibilityFocus(null, null); 677 switch (res) { 678 case WindowManagerGlobal.ADD_BAD_APP_TOKEN: 679 case WindowManagerGlobal.ADD_BAD_SUBWINDOW_TOKEN: 680 throw new WindowManager.BadTokenException( 681 "Unable to add window -- token " + attrs.token 682 + " is not valid; is your activity running?"); 683 case WindowManagerGlobal.ADD_NOT_APP_TOKEN: 684 throw new WindowManager.BadTokenException( 685 "Unable to add window -- token " + attrs.token 686 + " is not for an application"); 687 case WindowManagerGlobal.ADD_APP_EXITING: 688 throw new WindowManager.BadTokenException( 689 "Unable to add window -- app for token " + attrs.token 690 + " is exiting"); 691 case WindowManagerGlobal.ADD_DUPLICATE_ADD: 692 throw new WindowManager.BadTokenException( 693 "Unable to add window -- window " + mWindow 694 + " has already been added"); 695 case WindowManagerGlobal.ADD_STARTING_NOT_NEEDED: 696 // Silently ignore -- we would have just removed it 697 // right away, anyway. 698 return; 699 case WindowManagerGlobal.ADD_MULTIPLE_SINGLETON: 700 throw new WindowManager.BadTokenException("Unable to add window " 701 + mWindow + " -- another window of type " 702 + mWindowAttributes.type + " already exists"); 703 case WindowManagerGlobal.ADD_PERMISSION_DENIED: 704 throw new WindowManager.BadTokenException("Unable to add window " 705 + mWindow + " -- permission denied for window type " 706 + mWindowAttributes.type); 707 case WindowManagerGlobal.ADD_INVALID_DISPLAY: 708 throw new WindowManager.InvalidDisplayException("Unable to add window " 709 + mWindow + " -- the specified display can not be found"); 710 case WindowManagerGlobal.ADD_INVALID_TYPE: 711 throw new WindowManager.InvalidDisplayException("Unable to add window " 712 + mWindow + " -- the specified window type " 713 + mWindowAttributes.type + " is not valid"); 714 } 715 throw new RuntimeException( 716 "Unable to add window -- unknown error code " + res); 717 } 718 719 if (view instanceof RootViewSurfaceTaker) { 720 mInputQueueCallback = 721 ((RootViewSurfaceTaker)view).willYouTakeTheInputQueue(); 722 } 723 if (mInputChannel != null) { 724 if (mInputQueueCallback != null) { 725 mInputQueue = new InputQueue(); 726 mInputQueueCallback.onInputQueueCreated(mInputQueue); 727 } 728 mInputEventReceiver = new WindowInputEventReceiver(mInputChannel, 729 Looper.myLooper()); 730 } 731 732 view.assignParent(this); 733 mAddedTouchMode = (res & WindowManagerGlobal.ADD_FLAG_IN_TOUCH_MODE) != 0; 734 mAppVisible = (res & WindowManagerGlobal.ADD_FLAG_APP_VISIBLE) != 0; 735 736 if (mAccessibilityManager.isEnabled()) { 737 mAccessibilityInteractionConnectionManager.ensureConnection(); 738 } 739 740 if (view.getImportantForAccessibility() == View.IMPORTANT_FOR_ACCESSIBILITY_AUTO) { 741 view.setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_YES); 742 } 743 744 // Set up the input pipeline. 745 CharSequence counterSuffix = attrs.getTitle(); 746 mSyntheticInputStage = new SyntheticInputStage(); 747 InputStage viewPostImeStage = new ViewPostImeInputStage(mSyntheticInputStage); 748 InputStage nativePostImeStage = new NativePostImeInputStage(viewPostImeStage, 749 "aq:native-post-ime:" + counterSuffix); 750 InputStage earlyPostImeStage = new EarlyPostImeInputStage(nativePostImeStage); 751 InputStage imeStage = new ImeInputStage(earlyPostImeStage, 752 "aq:ime:" + counterSuffix); 753 InputStage viewPreImeStage = new ViewPreImeInputStage(imeStage); 754 InputStage nativePreImeStage = new NativePreImeInputStage(viewPreImeStage, 755 "aq:native-pre-ime:" + counterSuffix); 756 757 mFirstInputStage = nativePreImeStage; 758 mFirstPostImeInputStage = earlyPostImeStage; 759 mPendingInputEventQueueLengthCounterName = "aq:pending:" + counterSuffix; 760 } 761 } 762 } 763 764 private void setTag() { 765 final String[] split = mWindowAttributes.getTitle().toString().split("\\."); 766 if (split.length > 0) { 767 mTag = TAG + "[" + split[split.length - 1] + "]"; 768 } 769 } 770 771 /** Whether the window is in local focus mode or not */ 772 private boolean isInLocalFocusMode() { 773 return (mWindowAttributes.flags & WindowManager.LayoutParams.FLAG_LOCAL_FOCUS_MODE) != 0; 774 } 775 776 public int getWindowFlags() { 777 return mWindowAttributes.flags; 778 } 779 780 public int getDisplayId() { 781 return mDisplay.getDisplayId(); 782 } 783 784 public CharSequence getTitle() { 785 return mWindowAttributes.getTitle(); 786 } 787 788 void destroyHardwareResources() { 789 if (mAttachInfo.mHardwareRenderer != null) { 790 mAttachInfo.mHardwareRenderer.destroyHardwareResources(mView); 791 mAttachInfo.mHardwareRenderer.destroy(); 792 } 793 } 794 795 public void detachFunctor(long functor) { 796 if (mAttachInfo.mHardwareRenderer != null) { 797 // Fence so that any pending invokeFunctor() messages will be processed 798 // before we return from detachFunctor. 799 mAttachInfo.mHardwareRenderer.stopDrawing(); 800 } 801 } 802 803 /** 804 * Schedules the functor for execution in either kModeProcess or 805 * kModeProcessNoContext, depending on whether or not there is an EGLContext. 806 * 807 * @param functor The native functor to invoke 808 * @param waitForCompletion If true, this will not return until the functor 809 * has invoked. If false, the functor may be invoked 810 * asynchronously. 811 */ 812 public static void invokeFunctor(long functor, boolean waitForCompletion) { 813 ThreadedRenderer.invokeFunctor(functor, waitForCompletion); 814 } 815 816 public void registerAnimatingRenderNode(RenderNode animator) { 817 if (mAttachInfo.mHardwareRenderer != null) { 818 mAttachInfo.mHardwareRenderer.registerAnimatingRenderNode(animator); 819 } else { 820 if (mAttachInfo.mPendingAnimatingRenderNodes == null) { 821 mAttachInfo.mPendingAnimatingRenderNodes = new ArrayList<RenderNode>(); 822 } 823 mAttachInfo.mPendingAnimatingRenderNodes.add(animator); 824 } 825 } 826 827 private void enableHardwareAcceleration(WindowManager.LayoutParams attrs) { 828 mAttachInfo.mHardwareAccelerated = false; 829 mAttachInfo.mHardwareAccelerationRequested = false; 830 831 // Don't enable hardware acceleration when the application is in compatibility mode 832 if (mTranslator != null) return; 833 834 // Try to enable hardware acceleration if requested 835 final boolean hardwareAccelerated = 836 (attrs.flags & WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED) != 0; 837 838 if (hardwareAccelerated) { 839 if (!ThreadedRenderer.isAvailable()) { 840 return; 841 } 842 843 // Persistent processes (including the system) should not do 844 // accelerated rendering on low-end devices. In that case, 845 // sRendererDisabled will be set. In addition, the system process 846 // itself should never do accelerated rendering. In that case, both 847 // sRendererDisabled and sSystemRendererDisabled are set. When 848 // sSystemRendererDisabled is set, PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED 849 // can be used by code on the system process to escape that and enable 850 // HW accelerated drawing. (This is basically for the lock screen.) 851 852 final boolean fakeHwAccelerated = (attrs.privateFlags & 853 WindowManager.LayoutParams.PRIVATE_FLAG_FAKE_HARDWARE_ACCELERATED) != 0; 854 final boolean forceHwAccelerated = (attrs.privateFlags & 855 WindowManager.LayoutParams.PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED) != 0; 856 857 if (fakeHwAccelerated) { 858 // This is exclusively for the preview windows the window manager 859 // shows for launching applications, so they will look more like 860 // the app being launched. 861 mAttachInfo.mHardwareAccelerationRequested = true; 862 } else if (!ThreadedRenderer.sRendererDisabled 863 || (ThreadedRenderer.sSystemRendererDisabled && forceHwAccelerated)) { 864 if (mAttachInfo.mHardwareRenderer != null) { 865 mAttachInfo.mHardwareRenderer.destroy(); 866 } 867 868 final Rect insets = attrs.surfaceInsets; 869 final boolean hasSurfaceInsets = insets.left != 0 || insets.right != 0 870 || insets.top != 0 || insets.bottom != 0; 871 final boolean translucent = attrs.format != PixelFormat.OPAQUE || hasSurfaceInsets; 872 mAttachInfo.mHardwareRenderer = ThreadedRenderer.create(mContext, translucent); 873 if (mAttachInfo.mHardwareRenderer != null) { 874 mAttachInfo.mHardwareRenderer.setName(attrs.getTitle().toString()); 875 mAttachInfo.mHardwareAccelerated = 876 mAttachInfo.mHardwareAccelerationRequested = true; 877 } 878 } 879 } 880 } 881 882 public View getView() { 883 return mView; 884 } 885 886 final WindowLeaked getLocation() { 887 return mLocation; 888 } 889 890 void setLayoutParams(WindowManager.LayoutParams attrs, boolean newView) { 891 synchronized (this) { 892 final int oldInsetLeft = mWindowAttributes.surfaceInsets.left; 893 final int oldInsetTop = mWindowAttributes.surfaceInsets.top; 894 final int oldInsetRight = mWindowAttributes.surfaceInsets.right; 895 final int oldInsetBottom = mWindowAttributes.surfaceInsets.bottom; 896 final int oldSoftInputMode = mWindowAttributes.softInputMode; 897 final boolean oldHasManualSurfaceInsets = mWindowAttributes.hasManualSurfaceInsets; 898 899 if (DEBUG_KEEP_SCREEN_ON && (mClientWindowLayoutFlags 900 & WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON) != 0 901 && (attrs.flags&WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON) == 0) { 902 Slog.d(mTag, "setLayoutParams: FLAG_KEEP_SCREEN_ON from true to false!"); 903 } 904 905 // Keep track of the actual window flags supplied by the client. 906 mClientWindowLayoutFlags = attrs.flags; 907 908 // Preserve compatible window flag if exists. 909 final int compatibleWindowFlag = mWindowAttributes.privateFlags 910 & WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 911 912 // Transfer over system UI visibility values as they carry current state. 913 attrs.systemUiVisibility = mWindowAttributes.systemUiVisibility; 914 attrs.subtreeSystemUiVisibility = mWindowAttributes.subtreeSystemUiVisibility; 915 916 mWindowAttributesChangesFlag = mWindowAttributes.copyFrom(attrs); 917 if ((mWindowAttributesChangesFlag 918 & WindowManager.LayoutParams.TRANSLUCENT_FLAGS_CHANGED) != 0) { 919 // Recompute system ui visibility. 920 mAttachInfo.mRecomputeGlobalAttributes = true; 921 } 922 if ((mWindowAttributesChangesFlag 923 & WindowManager.LayoutParams.LAYOUT_CHANGED) != 0) { 924 // Request to update light center. 925 mAttachInfo.mNeedsUpdateLightCenter = true; 926 } 927 if (mWindowAttributes.packageName == null) { 928 mWindowAttributes.packageName = mBasePackageName; 929 } 930 mWindowAttributes.privateFlags |= compatibleWindowFlag; 931 932 if (mWindowAttributes.preservePreviousSurfaceInsets) { 933 // Restore old surface insets. 934 mWindowAttributes.surfaceInsets.set( 935 oldInsetLeft, oldInsetTop, oldInsetRight, oldInsetBottom); 936 mWindowAttributes.hasManualSurfaceInsets = oldHasManualSurfaceInsets; 937 } else if (mWindowAttributes.surfaceInsets.left != oldInsetLeft 938 || mWindowAttributes.surfaceInsets.top != oldInsetTop 939 || mWindowAttributes.surfaceInsets.right != oldInsetRight 940 || mWindowAttributes.surfaceInsets.bottom != oldInsetBottom) { 941 mNeedsHwRendererSetup = true; 942 } 943 944 applyKeepScreenOnFlag(mWindowAttributes); 945 946 if (newView) { 947 mSoftInputMode = attrs.softInputMode; 948 requestLayout(); 949 } 950 951 // Don't lose the mode we last auto-computed. 952 if ((attrs.softInputMode & WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 953 == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 954 mWindowAttributes.softInputMode = (mWindowAttributes.softInputMode 955 & ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 956 | (oldSoftInputMode & WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST); 957 } 958 959 mWindowAttributesChanged = true; 960 scheduleTraversals(); 961 } 962 } 963 964 void handleAppVisibility(boolean visible) { 965 if (mAppVisible != visible) { 966 mAppVisible = visible; 967 scheduleTraversals(); 968 if (!mAppVisible) { 969 WindowManagerGlobal.trimForeground(); 970 } 971 } 972 } 973 974 void handleGetNewSurface() { 975 mNewSurfaceNeeded = true; 976 mFullRedrawNeeded = true; 977 scheduleTraversals(); 978 } 979 980 private final DisplayListener mDisplayListener = new DisplayListener() { 981 @Override 982 public void onDisplayChanged(int displayId) { 983 if (mView != null && mDisplay.getDisplayId() == displayId) { 984 final int oldDisplayState = mAttachInfo.mDisplayState; 985 final int newDisplayState = mDisplay.getState(); 986 if (oldDisplayState != newDisplayState) { 987 mAttachInfo.mDisplayState = newDisplayState; 988 pokeDrawLockIfNeeded(); 989 if (oldDisplayState != Display.STATE_UNKNOWN) { 990 final int oldScreenState = toViewScreenState(oldDisplayState); 991 final int newScreenState = toViewScreenState(newDisplayState); 992 if (oldScreenState != newScreenState) { 993 mView.dispatchScreenStateChanged(newScreenState); 994 } 995 if (oldDisplayState == Display.STATE_OFF) { 996 // Draw was suppressed so we need to for it to happen here. 997 mFullRedrawNeeded = true; 998 scheduleTraversals(); 999 } 1000 } 1001 } 1002 } 1003 } 1004 1005 @Override 1006 public void onDisplayRemoved(int displayId) { 1007 } 1008 1009 @Override 1010 public void onDisplayAdded(int displayId) { 1011 } 1012 1013 private int toViewScreenState(int displayState) { 1014 return displayState == Display.STATE_OFF ? 1015 View.SCREEN_STATE_OFF : View.SCREEN_STATE_ON; 1016 } 1017 }; 1018 1019 void pokeDrawLockIfNeeded() { 1020 final int displayState = mAttachInfo.mDisplayState; 1021 if (mView != null && mAdded && mTraversalScheduled 1022 && (displayState == Display.STATE_DOZE 1023 || displayState == Display.STATE_DOZE_SUSPEND)) { 1024 try { 1025 mWindowSession.pokeDrawLock(mWindow); 1026 } catch (RemoteException ex) { 1027 // System server died, oh well. 1028 } 1029 } 1030 } 1031 1032 @Override 1033 public void requestFitSystemWindows() { 1034 checkThread(); 1035 mApplyInsetsRequested = true; 1036 scheduleTraversals(); 1037 } 1038 1039 @Override 1040 public void requestLayout() { 1041 if (!mHandlingLayoutInLayoutRequest) { 1042 checkThread(); 1043 mLayoutRequested = true; 1044 scheduleTraversals(); 1045 } 1046 } 1047 1048 @Override 1049 public boolean isLayoutRequested() { 1050 return mLayoutRequested; 1051 } 1052 1053 void invalidate() { 1054 mDirty.set(0, 0, mWidth, mHeight); 1055 if (!mWillDrawSoon) { 1056 scheduleTraversals(); 1057 } 1058 } 1059 1060 void invalidateWorld(View view) { 1061 view.invalidate(); 1062 if (view instanceof ViewGroup) { 1063 ViewGroup parent = (ViewGroup) view; 1064 for (int i = 0; i < parent.getChildCount(); i++) { 1065 invalidateWorld(parent.getChildAt(i)); 1066 } 1067 } 1068 } 1069 1070 @Override 1071 public void invalidateChild(View child, Rect dirty) { 1072 invalidateChildInParent(null, dirty); 1073 } 1074 1075 @Override 1076 public ViewParent invalidateChildInParent(int[] location, Rect dirty) { 1077 checkThread(); 1078 if (DEBUG_DRAW) Log.v(mTag, "Invalidate child: " + dirty); 1079 1080 if (dirty == null) { 1081 invalidate(); 1082 return null; 1083 } else if (dirty.isEmpty() && !mIsAnimating) { 1084 return null; 1085 } 1086 1087 if (mCurScrollY != 0 || mTranslator != null) { 1088 mTempRect.set(dirty); 1089 dirty = mTempRect; 1090 if (mCurScrollY != 0) { 1091 dirty.offset(0, -mCurScrollY); 1092 } 1093 if (mTranslator != null) { 1094 mTranslator.translateRectInAppWindowToScreen(dirty); 1095 } 1096 if (mAttachInfo.mScalingRequired) { 1097 dirty.inset(-1, -1); 1098 } 1099 } 1100 1101 invalidateRectOnScreen(dirty); 1102 1103 return null; 1104 } 1105 1106 private void invalidateRectOnScreen(Rect dirty) { 1107 final Rect localDirty = mDirty; 1108 if (!localDirty.isEmpty() && !localDirty.contains(dirty)) { 1109 mAttachInfo.mSetIgnoreDirtyState = true; 1110 mAttachInfo.mIgnoreDirtyState = true; 1111 } 1112 1113 // Add the new dirty rect to the current one 1114 localDirty.union(dirty.left, dirty.top, dirty.right, dirty.bottom); 1115 // Intersect with the bounds of the window to skip 1116 // updates that lie outside of the visible region 1117 final float appScale = mAttachInfo.mApplicationScale; 1118 final boolean intersected = localDirty.intersect(0, 0, 1119 (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 1120 if (!intersected) { 1121 localDirty.setEmpty(); 1122 } 1123 if (!mWillDrawSoon && (intersected || mIsAnimating)) { 1124 scheduleTraversals(); 1125 } 1126 } 1127 1128 public void setIsAmbientMode(boolean ambient) { 1129 mIsAmbientMode = ambient; 1130 } 1131 1132 void setWindowStopped(boolean stopped) { 1133 if (mStopped != stopped) { 1134 mStopped = stopped; 1135 final ThreadedRenderer renderer = mAttachInfo.mHardwareRenderer; 1136 if (renderer != null) { 1137 if (DEBUG_DRAW) Log.d(mTag, "WindowStopped on " + getTitle() + " set to " + mStopped); 1138 renderer.setStopped(mStopped); 1139 } 1140 if (!mStopped) { 1141 scheduleTraversals(); 1142 } else { 1143 if (renderer != null) { 1144 renderer.destroyHardwareResources(mView); 1145 } 1146 } 1147 } 1148 } 1149 1150 /** 1151 * Block the input events during an Activity Transition. The KEYCODE_BACK event is allowed 1152 * through to allow quick reversal of the Activity Transition. 1153 * 1154 * @param paused true to pause, false to resume. 1155 */ 1156 public void setPausedForTransition(boolean paused) { 1157 mPausedForTransition = paused; 1158 } 1159 1160 @Override 1161 public ViewParent getParent() { 1162 return null; 1163 } 1164 1165 @Override 1166 public boolean getChildVisibleRect(View child, Rect r, android.graphics.Point offset) { 1167 if (child != mView) { 1168 throw new RuntimeException("child is not mine, honest!"); 1169 } 1170 // Note: don't apply scroll offset, because we want to know its 1171 // visibility in the virtual canvas being given to the view hierarchy. 1172 return r.intersect(0, 0, mWidth, mHeight); 1173 } 1174 1175 @Override 1176 public void bringChildToFront(View child) { 1177 } 1178 1179 int getHostVisibility() { 1180 return (mAppVisible || mForceDecorViewVisibility) ? mView.getVisibility() : View.GONE; 1181 } 1182 1183 /** 1184 * Add LayoutTransition to the list of transitions to be started in the next traversal. 1185 * This list will be cleared after the transitions on the list are start()'ed. These 1186 * transitionsa re added by LayoutTransition itself when it sets up animations. The setup 1187 * happens during the layout phase of traversal, which we want to complete before any of the 1188 * animations are started (because those animations may side-effect properties that layout 1189 * depends upon, like the bounding rectangles of the affected views). So we add the transition 1190 * to the list and it is started just prior to starting the drawing phase of traversal. 1191 * 1192 * @param transition The LayoutTransition to be started on the next traversal. 1193 * 1194 * @hide 1195 */ 1196 public void requestTransitionStart(LayoutTransition transition) { 1197 if (mPendingTransitions == null || !mPendingTransitions.contains(transition)) { 1198 if (mPendingTransitions == null) { 1199 mPendingTransitions = new ArrayList<LayoutTransition>(); 1200 } 1201 mPendingTransitions.add(transition); 1202 } 1203 } 1204 1205 /** 1206 * Notifies the HardwareRenderer that a new frame will be coming soon. 1207 * Currently only {@link ThreadedRenderer} cares about this, and uses 1208 * this knowledge to adjust the scheduling of off-thread animations 1209 */ 1210 void notifyRendererOfFramePending() { 1211 if (mAttachInfo.mHardwareRenderer != null) { 1212 mAttachInfo.mHardwareRenderer.notifyFramePending(); 1213 } 1214 } 1215 1216 void scheduleTraversals() { 1217 if (!mTraversalScheduled) { 1218 mTraversalScheduled = true; 1219 mTraversalBarrier = mHandler.getLooper().getQueue().postSyncBarrier(); 1220 mChoreographer.postCallback( 1221 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 1222 if (!mUnbufferedInputDispatch) { 1223 scheduleConsumeBatchedInput(); 1224 } 1225 notifyRendererOfFramePending(); 1226 pokeDrawLockIfNeeded(); 1227 } 1228 } 1229 1230 void unscheduleTraversals() { 1231 if (mTraversalScheduled) { 1232 mTraversalScheduled = false; 1233 mHandler.getLooper().getQueue().removeSyncBarrier(mTraversalBarrier); 1234 mChoreographer.removeCallbacks( 1235 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 1236 } 1237 } 1238 1239 void doTraversal() { 1240 if (mTraversalScheduled) { 1241 mTraversalScheduled = false; 1242 mHandler.getLooper().getQueue().removeSyncBarrier(mTraversalBarrier); 1243 1244 if (mProfile) { 1245 Debug.startMethodTracing("ViewAncestor"); 1246 } 1247 1248 performTraversals(); 1249 1250 if (mProfile) { 1251 Debug.stopMethodTracing(); 1252 mProfile = false; 1253 } 1254 } 1255 } 1256 1257 private void applyKeepScreenOnFlag(WindowManager.LayoutParams params) { 1258 // Update window's global keep screen on flag: if a view has requested 1259 // that the screen be kept on, then it is always set; otherwise, it is 1260 // set to whatever the client last requested for the global state. 1261 if (mAttachInfo.mKeepScreenOn) { 1262 params.flags |= WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON; 1263 } else { 1264 params.flags = (params.flags&~WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON) 1265 | (mClientWindowLayoutFlags&WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 1266 } 1267 } 1268 1269 private boolean collectViewAttributes() { 1270 if (mAttachInfo.mRecomputeGlobalAttributes) { 1271 //Log.i(mTag, "Computing view hierarchy attributes!"); 1272 mAttachInfo.mRecomputeGlobalAttributes = false; 1273 boolean oldScreenOn = mAttachInfo.mKeepScreenOn; 1274 mAttachInfo.mKeepScreenOn = false; 1275 mAttachInfo.mSystemUiVisibility = 0; 1276 mAttachInfo.mHasSystemUiListeners = false; 1277 mView.dispatchCollectViewAttributes(mAttachInfo, 0); 1278 mAttachInfo.mSystemUiVisibility &= ~mAttachInfo.mDisabledSystemUiVisibility; 1279 WindowManager.LayoutParams params = mWindowAttributes; 1280 mAttachInfo.mSystemUiVisibility |= getImpliedSystemUiVisibility(params); 1281 if (mAttachInfo.mKeepScreenOn != oldScreenOn 1282 || mAttachInfo.mSystemUiVisibility != params.subtreeSystemUiVisibility 1283 || mAttachInfo.mHasSystemUiListeners != params.hasSystemUiListeners) { 1284 applyKeepScreenOnFlag(params); 1285 params.subtreeSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1286 params.hasSystemUiListeners = mAttachInfo.mHasSystemUiListeners; 1287 mView.dispatchWindowSystemUiVisiblityChanged(mAttachInfo.mSystemUiVisibility); 1288 return true; 1289 } 1290 } 1291 return false; 1292 } 1293 1294 private int getImpliedSystemUiVisibility(WindowManager.LayoutParams params) { 1295 int vis = 0; 1296 // Translucent decor window flags imply stable system ui visibility. 1297 if ((params.flags & WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS) != 0) { 1298 vis |= View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN; 1299 } 1300 if ((params.flags & WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION) != 0) { 1301 vis |= View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION; 1302 } 1303 return vis; 1304 } 1305 1306 private boolean measureHierarchy(final View host, final WindowManager.LayoutParams lp, 1307 final Resources res, final int desiredWindowWidth, final int desiredWindowHeight) { 1308 int childWidthMeasureSpec; 1309 int childHeightMeasureSpec; 1310 boolean windowSizeMayChange = false; 1311 1312 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) Log.v(mTag, 1313 "Measuring " + host + " in display " + desiredWindowWidth 1314 + "x" + desiredWindowHeight + "..."); 1315 1316 boolean goodMeasure = false; 1317 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT) { 1318 // On large screens, we don't want to allow dialogs to just 1319 // stretch to fill the entire width of the screen to display 1320 // one line of text. First try doing the layout at a smaller 1321 // size to see if it will fit. 1322 final DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1323 res.getValue(com.android.internal.R.dimen.config_prefDialogWidth, mTmpValue, true); 1324 int baseSize = 0; 1325 if (mTmpValue.type == TypedValue.TYPE_DIMENSION) { 1326 baseSize = (int)mTmpValue.getDimension(packageMetrics); 1327 } 1328 if (DEBUG_DIALOG) Log.v(mTag, "Window " + mView + ": baseSize=" + baseSize 1329 + ", desiredWindowWidth=" + desiredWindowWidth); 1330 if (baseSize != 0 && desiredWindowWidth > baseSize) { 1331 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1332 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1333 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1334 if (DEBUG_DIALOG) Log.v(mTag, "Window " + mView + ": measured (" 1335 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() 1336 + ") from width spec: " + MeasureSpec.toString(childWidthMeasureSpec) 1337 + " and height spec: " + MeasureSpec.toString(childHeightMeasureSpec)); 1338 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1339 goodMeasure = true; 1340 } else { 1341 // Didn't fit in that size... try expanding a bit. 1342 baseSize = (baseSize+desiredWindowWidth)/2; 1343 if (DEBUG_DIALOG) Log.v(mTag, "Window " + mView + ": next baseSize=" 1344 + baseSize); 1345 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1346 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1347 if (DEBUG_DIALOG) Log.v(mTag, "Window " + mView + ": measured (" 1348 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1349 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1350 if (DEBUG_DIALOG) Log.v(mTag, "Good!"); 1351 goodMeasure = true; 1352 } 1353 } 1354 } 1355 } 1356 1357 if (!goodMeasure) { 1358 childWidthMeasureSpec = getRootMeasureSpec(desiredWindowWidth, lp.width); 1359 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1360 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1361 if (mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) { 1362 windowSizeMayChange = true; 1363 } 1364 } 1365 1366 if (DBG) { 1367 System.out.println("======================================"); 1368 System.out.println("performTraversals -- after measure"); 1369 host.debug(); 1370 } 1371 1372 return windowSizeMayChange; 1373 } 1374 1375 /** 1376 * Modifies the input matrix such that it maps view-local coordinates to 1377 * on-screen coordinates. 1378 * 1379 * @param m input matrix to modify 1380 */ 1381 void transformMatrixToGlobal(Matrix m) { 1382 m.preTranslate(mAttachInfo.mWindowLeft, mAttachInfo.mWindowTop); 1383 } 1384 1385 /** 1386 * Modifies the input matrix such that it maps on-screen coordinates to 1387 * view-local coordinates. 1388 * 1389 * @param m input matrix to modify 1390 */ 1391 void transformMatrixToLocal(Matrix m) { 1392 m.postTranslate(-mAttachInfo.mWindowLeft, -mAttachInfo.mWindowTop); 1393 } 1394 1395 /* package */ WindowInsets getWindowInsets(boolean forceConstruct) { 1396 if (mLastWindowInsets == null || forceConstruct) { 1397 mDispatchContentInsets.set(mAttachInfo.mContentInsets); 1398 mDispatchStableInsets.set(mAttachInfo.mStableInsets); 1399 Rect contentInsets = mDispatchContentInsets; 1400 Rect stableInsets = mDispatchStableInsets; 1401 // For dispatch we preserve old logic, but for direct requests from Views we allow to 1402 // immediately use pending insets. 1403 if (!forceConstruct 1404 && (!mPendingContentInsets.equals(contentInsets) || 1405 !mPendingStableInsets.equals(stableInsets))) { 1406 contentInsets = mPendingContentInsets; 1407 stableInsets = mPendingStableInsets; 1408 } 1409 Rect outsets = mAttachInfo.mOutsets; 1410 if (outsets.left > 0 || outsets.top > 0 || outsets.right > 0 || outsets.bottom > 0) { 1411 contentInsets = new Rect(contentInsets.left + outsets.left, 1412 contentInsets.top + outsets.top, contentInsets.right + outsets.right, 1413 contentInsets.bottom + outsets.bottom); 1414 } 1415 mLastWindowInsets = new WindowInsets(contentInsets, 1416 null /* windowDecorInsets */, stableInsets, 1417 mContext.getResources().getConfiguration().isScreenRound(), 1418 mAttachInfo.mAlwaysConsumeNavBar); 1419 } 1420 return mLastWindowInsets; 1421 } 1422 1423 void dispatchApplyInsets(View host) { 1424 host.dispatchApplyWindowInsets(getWindowInsets(true /* forceConstruct */)); 1425 } 1426 1427 private static boolean shouldUseDisplaySize(final WindowManager.LayoutParams lp) { 1428 return lp.type == TYPE_STATUS_BAR_PANEL 1429 || lp.type == TYPE_INPUT_METHOD 1430 || lp.type == TYPE_VOLUME_OVERLAY; 1431 } 1432 1433 private int dipToPx(int dip) { 1434 final DisplayMetrics displayMetrics = mContext.getResources().getDisplayMetrics(); 1435 return (int) (displayMetrics.density * dip + 0.5f); 1436 } 1437 1438 private void performTraversals() { 1439 // cache mView since it is used so much below... 1440 final View host = mView; 1441 1442 if (DBG) { 1443 System.out.println("======================================"); 1444 System.out.println("performTraversals"); 1445 host.debug(); 1446 } 1447 1448 if (host == null || !mAdded) 1449 return; 1450 1451 mIsInTraversal = true; 1452 mWillDrawSoon = true; 1453 boolean windowSizeMayChange = false; 1454 boolean newSurface = false; 1455 boolean surfaceChanged = false; 1456 WindowManager.LayoutParams lp = mWindowAttributes; 1457 1458 int desiredWindowWidth; 1459 int desiredWindowHeight; 1460 1461 final int viewVisibility = getHostVisibility(); 1462 final boolean viewVisibilityChanged = !mFirst 1463 && (mViewVisibility != viewVisibility || mNewSurfaceNeeded); 1464 1465 WindowManager.LayoutParams params = null; 1466 if (mWindowAttributesChanged) { 1467 mWindowAttributesChanged = false; 1468 surfaceChanged = true; 1469 params = lp; 1470 } 1471 CompatibilityInfo compatibilityInfo = mDisplayAdjustments.getCompatibilityInfo(); 1472 if (compatibilityInfo.supportsScreen() == mLastInCompatMode) { 1473 params = lp; 1474 mFullRedrawNeeded = true; 1475 mLayoutRequested = true; 1476 if (mLastInCompatMode) { 1477 params.privateFlags &= ~WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 1478 mLastInCompatMode = false; 1479 } else { 1480 params.privateFlags |= WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 1481 mLastInCompatMode = true; 1482 } 1483 } 1484 1485 mWindowAttributesChangesFlag = 0; 1486 1487 Rect frame = mWinFrame; 1488 if (mFirst) { 1489 mFullRedrawNeeded = true; 1490 mLayoutRequested = true; 1491 1492 if (shouldUseDisplaySize(lp)) { 1493 // NOTE -- system code, won't try to do compat mode. 1494 Point size = new Point(); 1495 mDisplay.getRealSize(size); 1496 desiredWindowWidth = size.x; 1497 desiredWindowHeight = size.y; 1498 } else { 1499 Configuration config = mContext.getResources().getConfiguration(); 1500 desiredWindowWidth = dipToPx(config.screenWidthDp); 1501 desiredWindowHeight = dipToPx(config.screenHeightDp); 1502 } 1503 1504 // We used to use the following condition to choose 32 bits drawing caches: 1505 // PixelFormat.hasAlpha(lp.format) || lp.format == PixelFormat.RGBX_8888 1506 // However, windows are now always 32 bits by default, so choose 32 bits 1507 mAttachInfo.mUse32BitDrawingCache = true; 1508 mAttachInfo.mHasWindowFocus = false; 1509 mAttachInfo.mWindowVisibility = viewVisibility; 1510 mAttachInfo.mRecomputeGlobalAttributes = false; 1511 mLastConfiguration.setTo(host.getResources().getConfiguration()); 1512 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1513 // Set the layout direction if it has not been set before (inherit is the default) 1514 if (mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 1515 host.setLayoutDirection(mLastConfiguration.getLayoutDirection()); 1516 } 1517 host.dispatchAttachedToWindow(mAttachInfo, 0); 1518 mAttachInfo.mTreeObserver.dispatchOnWindowAttachedChange(true); 1519 dispatchApplyInsets(host); 1520 //Log.i(mTag, "Screen on initialized: " + attachInfo.mKeepScreenOn); 1521 1522 } else { 1523 desiredWindowWidth = frame.width(); 1524 desiredWindowHeight = frame.height(); 1525 if (desiredWindowWidth != mWidth || desiredWindowHeight != mHeight) { 1526 if (DEBUG_ORIENTATION) Log.v(mTag, "View " + host + " resized to: " + frame); 1527 mFullRedrawNeeded = true; 1528 mLayoutRequested = true; 1529 windowSizeMayChange = true; 1530 } 1531 } 1532 1533 if (viewVisibilityChanged) { 1534 mAttachInfo.mWindowVisibility = viewVisibility; 1535 host.dispatchWindowVisibilityChanged(viewVisibility); 1536 host.dispatchVisibilityAggregated(viewVisibility == View.VISIBLE); 1537 if (viewVisibility != View.VISIBLE || mNewSurfaceNeeded) { 1538 endDragResizing(); 1539 destroyHardwareResources(); 1540 } 1541 if (viewVisibility == View.GONE) { 1542 // After making a window gone, we will count it as being 1543 // shown for the first time the next time it gets focus. 1544 mHasHadWindowFocus = false; 1545 } 1546 } 1547 1548 // Non-visible windows can't hold accessibility focus. 1549 if (mAttachInfo.mWindowVisibility != View.VISIBLE) { 1550 host.clearAccessibilityFocus(); 1551 } 1552 1553 // Execute enqueued actions on every traversal in case a detached view enqueued an action 1554 getRunQueue().executeActions(mAttachInfo.mHandler); 1555 1556 boolean insetsChanged = false; 1557 1558 boolean layoutRequested = mLayoutRequested && (!mStopped || mReportNextDraw); 1559 if (layoutRequested) { 1560 1561 final Resources res = mView.getContext().getResources(); 1562 1563 if (mFirst) { 1564 // make sure touch mode code executes by setting cached value 1565 // to opposite of the added touch mode. 1566 mAttachInfo.mInTouchMode = !mAddedTouchMode; 1567 ensureTouchModeLocally(mAddedTouchMode); 1568 } else { 1569 if (!mPendingOverscanInsets.equals(mAttachInfo.mOverscanInsets)) { 1570 insetsChanged = true; 1571 } 1572 if (!mPendingContentInsets.equals(mAttachInfo.mContentInsets)) { 1573 insetsChanged = true; 1574 } 1575 if (!mPendingStableInsets.equals(mAttachInfo.mStableInsets)) { 1576 insetsChanged = true; 1577 } 1578 if (!mPendingVisibleInsets.equals(mAttachInfo.mVisibleInsets)) { 1579 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1580 if (DEBUG_LAYOUT) Log.v(mTag, "Visible insets changing to: " 1581 + mAttachInfo.mVisibleInsets); 1582 } 1583 if (!mPendingOutsets.equals(mAttachInfo.mOutsets)) { 1584 insetsChanged = true; 1585 } 1586 if (mPendingAlwaysConsumeNavBar != mAttachInfo.mAlwaysConsumeNavBar) { 1587 insetsChanged = true; 1588 } 1589 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT 1590 || lp.height == ViewGroup.LayoutParams.WRAP_CONTENT) { 1591 windowSizeMayChange = true; 1592 1593 if (shouldUseDisplaySize(lp)) { 1594 // NOTE -- system code, won't try to do compat mode. 1595 Point size = new Point(); 1596 mDisplay.getRealSize(size); 1597 desiredWindowWidth = size.x; 1598 desiredWindowHeight = size.y; 1599 } else { 1600 Configuration config = res.getConfiguration(); 1601 desiredWindowWidth = dipToPx(config.screenWidthDp); 1602 desiredWindowHeight = dipToPx(config.screenHeightDp); 1603 } 1604 } 1605 } 1606 1607 // Ask host how big it wants to be 1608 windowSizeMayChange |= measureHierarchy(host, lp, res, 1609 desiredWindowWidth, desiredWindowHeight); 1610 } 1611 1612 if (collectViewAttributes()) { 1613 params = lp; 1614 } 1615 if (mAttachInfo.mForceReportNewAttributes) { 1616 mAttachInfo.mForceReportNewAttributes = false; 1617 params = lp; 1618 } 1619 1620 if (mFirst || mAttachInfo.mViewVisibilityChanged) { 1621 mAttachInfo.mViewVisibilityChanged = false; 1622 int resizeMode = mSoftInputMode & 1623 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST; 1624 // If we are in auto resize mode, then we need to determine 1625 // what mode to use now. 1626 if (resizeMode == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 1627 final int N = mAttachInfo.mScrollContainers.size(); 1628 for (int i=0; i<N; i++) { 1629 if (mAttachInfo.mScrollContainers.get(i).isShown()) { 1630 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE; 1631 } 1632 } 1633 if (resizeMode == 0) { 1634 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_PAN; 1635 } 1636 if ((lp.softInputMode & 1637 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) != resizeMode) { 1638 lp.softInputMode = (lp.softInputMode & 1639 ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) | 1640 resizeMode; 1641 params = lp; 1642 } 1643 } 1644 } 1645 1646 if (params != null) { 1647 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 1648 if (!PixelFormat.formatHasAlpha(params.format)) { 1649 params.format = PixelFormat.TRANSLUCENT; 1650 } 1651 } 1652 mAttachInfo.mOverscanRequested = (params.flags 1653 & WindowManager.LayoutParams.FLAG_LAYOUT_IN_OVERSCAN) != 0; 1654 } 1655 1656 if (mApplyInsetsRequested) { 1657 mApplyInsetsRequested = false; 1658 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1659 dispatchApplyInsets(host); 1660 if (mLayoutRequested) { 1661 // Short-circuit catching a new layout request here, so 1662 // we don't need to go through two layout passes when things 1663 // change due to fitting system windows, which can happen a lot. 1664 windowSizeMayChange |= measureHierarchy(host, lp, 1665 mView.getContext().getResources(), 1666 desiredWindowWidth, desiredWindowHeight); 1667 } 1668 } 1669 1670 if (layoutRequested) { 1671 // Clear this now, so that if anything requests a layout in the 1672 // rest of this function we will catch it and re-run a full 1673 // layout pass. 1674 mLayoutRequested = false; 1675 } 1676 1677 boolean windowShouldResize = layoutRequested && windowSizeMayChange 1678 && ((mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) 1679 || (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT && 1680 frame.width() < desiredWindowWidth && frame.width() != mWidth) 1681 || (lp.height == ViewGroup.LayoutParams.WRAP_CONTENT && 1682 frame.height() < desiredWindowHeight && frame.height() != mHeight)); 1683 windowShouldResize |= mDragResizing && mResizeMode == RESIZE_MODE_FREEFORM; 1684 1685 // If the activity was just relaunched, it might have unfrozen the task bounds (while 1686 // relaunching), so we need to force a call into window manager to pick up the latest 1687 // bounds. 1688 windowShouldResize |= mActivityRelaunched; 1689 1690 // Determine whether to compute insets. 1691 // If there are no inset listeners remaining then we may still need to compute 1692 // insets in case the old insets were non-empty and must be reset. 1693 final boolean computesInternalInsets = 1694 mAttachInfo.mTreeObserver.hasComputeInternalInsetsListeners() 1695 || mAttachInfo.mHasNonEmptyGivenInternalInsets; 1696 1697 boolean insetsPending = false; 1698 int relayoutResult = 0; 1699 boolean updatedConfiguration = false; 1700 1701 final int surfaceGenerationId = mSurface.getGenerationId(); 1702 1703 final boolean isViewVisible = viewVisibility == View.VISIBLE; 1704 if (mFirst || windowShouldResize || insetsChanged || 1705 viewVisibilityChanged || params != null || mForceNextWindowRelayout) { 1706 mForceNextWindowRelayout = false; 1707 1708 if (isViewVisible) { 1709 // If this window is giving internal insets to the window 1710 // manager, and it is being added or changing its visibility, 1711 // then we want to first give the window manager "fake" 1712 // insets to cause it to effectively ignore the content of 1713 // the window during layout. This avoids it briefly causing 1714 // other windows to resize/move based on the raw frame of the 1715 // window, waiting until we can finish laying out this window 1716 // and get back to the window manager with the ultimately 1717 // computed insets. 1718 insetsPending = computesInternalInsets && (mFirst || viewVisibilityChanged); 1719 } 1720 1721 if (mSurfaceHolder != null) { 1722 mSurfaceHolder.mSurfaceLock.lock(); 1723 mDrawingAllowed = true; 1724 } 1725 1726 boolean hwInitialized = false; 1727 boolean contentInsetsChanged = false; 1728 boolean hadSurface = mSurface.isValid(); 1729 1730 try { 1731 if (DEBUG_LAYOUT) { 1732 Log.i(mTag, "host=w:" + host.getMeasuredWidth() + ", h:" + 1733 host.getMeasuredHeight() + ", params=" + params); 1734 } 1735 1736 if (mAttachInfo.mHardwareRenderer != null) { 1737 // relayoutWindow may decide to destroy mSurface. As that decision 1738 // happens in WindowManager service, we need to be defensive here 1739 // and stop using the surface in case it gets destroyed. 1740 if (mAttachInfo.mHardwareRenderer.pauseSurface(mSurface)) { 1741 // Animations were running so we need to push a frame 1742 // to resume them 1743 mDirty.set(0, 0, mWidth, mHeight); 1744 } 1745 mChoreographer.mFrameInfo.addFlags(FrameInfo.FLAG_WINDOW_LAYOUT_CHANGED); 1746 } 1747 relayoutResult = relayoutWindow(params, viewVisibility, insetsPending); 1748 1749 if (DEBUG_LAYOUT) Log.v(mTag, "relayout: frame=" + frame.toShortString() 1750 + " overscan=" + mPendingOverscanInsets.toShortString() 1751 + " content=" + mPendingContentInsets.toShortString() 1752 + " visible=" + mPendingVisibleInsets.toShortString() 1753 + " visible=" + mPendingStableInsets.toShortString() 1754 + " outsets=" + mPendingOutsets.toShortString() 1755 + " surface=" + mSurface); 1756 1757 if (mPendingConfiguration.seq != 0) { 1758 if (DEBUG_CONFIGURATION) Log.v(mTag, "Visible with new config: " 1759 + mPendingConfiguration); 1760 updateConfiguration(new Configuration(mPendingConfiguration), !mFirst); 1761 mPendingConfiguration.seq = 0; 1762 updatedConfiguration = true; 1763 } 1764 1765 final boolean overscanInsetsChanged = !mPendingOverscanInsets.equals( 1766 mAttachInfo.mOverscanInsets); 1767 contentInsetsChanged = !mPendingContentInsets.equals( 1768 mAttachInfo.mContentInsets); 1769 final boolean visibleInsetsChanged = !mPendingVisibleInsets.equals( 1770 mAttachInfo.mVisibleInsets); 1771 final boolean stableInsetsChanged = !mPendingStableInsets.equals( 1772 mAttachInfo.mStableInsets); 1773 final boolean outsetsChanged = !mPendingOutsets.equals(mAttachInfo.mOutsets); 1774 final boolean surfaceSizeChanged = (relayoutResult 1775 & WindowManagerGlobal.RELAYOUT_RES_SURFACE_RESIZED) != 0; 1776 final boolean alwaysConsumeNavBarChanged = 1777 mPendingAlwaysConsumeNavBar != mAttachInfo.mAlwaysConsumeNavBar; 1778 if (contentInsetsChanged) { 1779 mAttachInfo.mContentInsets.set(mPendingContentInsets); 1780 if (DEBUG_LAYOUT) Log.v(mTag, "Content insets changing to: " 1781 + mAttachInfo.mContentInsets); 1782 } 1783 if (overscanInsetsChanged) { 1784 mAttachInfo.mOverscanInsets.set(mPendingOverscanInsets); 1785 if (DEBUG_LAYOUT) Log.v(mTag, "Overscan insets changing to: " 1786 + mAttachInfo.mOverscanInsets); 1787 // Need to relayout with content insets. 1788 contentInsetsChanged = true; 1789 } 1790 if (stableInsetsChanged) { 1791 mAttachInfo.mStableInsets.set(mPendingStableInsets); 1792 if (DEBUG_LAYOUT) Log.v(mTag, "Decor insets changing to: " 1793 + mAttachInfo.mStableInsets); 1794 // Need to relayout with content insets. 1795 contentInsetsChanged = true; 1796 } 1797 if (alwaysConsumeNavBarChanged) { 1798 mAttachInfo.mAlwaysConsumeNavBar = mPendingAlwaysConsumeNavBar; 1799 contentInsetsChanged = true; 1800 } 1801 if (contentInsetsChanged || mLastSystemUiVisibility != 1802 mAttachInfo.mSystemUiVisibility || mApplyInsetsRequested 1803 || mLastOverscanRequested != mAttachInfo.mOverscanRequested 1804 || outsetsChanged) { 1805 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1806 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1807 mAttachInfo.mOutsets.set(mPendingOutsets); 1808 mApplyInsetsRequested = false; 1809 dispatchApplyInsets(host); 1810 } 1811 if (visibleInsetsChanged) { 1812 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1813 if (DEBUG_LAYOUT) Log.v(mTag, "Visible insets changing to: " 1814 + mAttachInfo.mVisibleInsets); 1815 } 1816 1817 if (!hadSurface) { 1818 if (mSurface.isValid()) { 1819 // If we are creating a new surface, then we need to 1820 // completely redraw it. Also, when we get to the 1821 // point of drawing it we will hold off and schedule 1822 // a new traversal instead. This is so we can tell the 1823 // window manager about all of the windows being displayed 1824 // before actually drawing them, so it can display then 1825 // all at once. 1826 newSurface = true; 1827 mFullRedrawNeeded = true; 1828 mPreviousTransparentRegion.setEmpty(); 1829 1830 // Only initialize up-front if transparent regions are not 1831 // requested, otherwise defer to see if the entire window 1832 // will be transparent 1833 if (mAttachInfo.mHardwareRenderer != null) { 1834 try { 1835 hwInitialized = mAttachInfo.mHardwareRenderer.initialize( 1836 mSurface); 1837 if (hwInitialized && (host.mPrivateFlags 1838 & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) == 0) { 1839 // Don't pre-allocate if transparent regions 1840 // are requested as they may not be needed 1841 mSurface.allocateBuffers(); 1842 } 1843 } catch (OutOfResourcesException e) { 1844 handleOutOfResourcesException(e); 1845 return; 1846 } 1847 } 1848 } 1849 } else if (!mSurface.isValid()) { 1850 // If the surface has been removed, then reset the scroll 1851 // positions. 1852 if (mLastScrolledFocus != null) { 1853 mLastScrolledFocus.clear(); 1854 } 1855 mScrollY = mCurScrollY = 0; 1856 if (mView instanceof RootViewSurfaceTaker) { 1857 ((RootViewSurfaceTaker) mView).onRootViewScrollYChanged(mCurScrollY); 1858 } 1859 if (mScroller != null) { 1860 mScroller.abortAnimation(); 1861 } 1862 // Our surface is gone 1863 if (mAttachInfo.mHardwareRenderer != null && 1864 mAttachInfo.mHardwareRenderer.isEnabled()) { 1865 mAttachInfo.mHardwareRenderer.destroy(); 1866 } 1867 } else if ((surfaceGenerationId != mSurface.getGenerationId() 1868 || surfaceSizeChanged) 1869 && mSurfaceHolder == null 1870 && mAttachInfo.mHardwareRenderer != null) { 1871 mFullRedrawNeeded = true; 1872 try { 1873 // Need to do updateSurface (which leads to CanvasContext::setSurface and 1874 // re-create the EGLSurface) if either the Surface changed (as indicated by 1875 // generation id), or WindowManager changed the surface size. The latter is 1876 // because on some chips, changing the consumer side's BufferQueue size may 1877 // not take effect immediately unless we create a new EGLSurface. 1878 // Note that frame size change doesn't always imply surface size change (eg. 1879 // drag resizing uses fullscreen surface), need to check surfaceSizeChanged 1880 // flag from WindowManager. 1881 mAttachInfo.mHardwareRenderer.updateSurface(mSurface); 1882 } catch (OutOfResourcesException e) { 1883 handleOutOfResourcesException(e); 1884 return; 1885 } 1886 } 1887 1888 final boolean freeformResizing = (relayoutResult 1889 & WindowManagerGlobal.RELAYOUT_RES_DRAG_RESIZING_FREEFORM) != 0; 1890 final boolean dockedResizing = (relayoutResult 1891 & WindowManagerGlobal.RELAYOUT_RES_DRAG_RESIZING_DOCKED) != 0; 1892 final boolean dragResizing = freeformResizing || dockedResizing; 1893 if (mDragResizing != dragResizing) { 1894 if (dragResizing) { 1895 mResizeMode = freeformResizing 1896 ? RESIZE_MODE_FREEFORM 1897 : RESIZE_MODE_DOCKED_DIVIDER; 1898 startDragResizing(mPendingBackDropFrame, 1899 mWinFrame.equals(mPendingBackDropFrame), mPendingVisibleInsets, 1900 mPendingStableInsets, mResizeMode); 1901 } else { 1902 // We shouldn't come here, but if we come we should end the resize. 1903 endDragResizing(); 1904 } 1905 } 1906 if (!USE_MT_RENDERER) { 1907 if (dragResizing) { 1908 mCanvasOffsetX = mWinFrame.left; 1909 mCanvasOffsetY = mWinFrame.top; 1910 } else { 1911 mCanvasOffsetX = mCanvasOffsetY = 0; 1912 } 1913 } 1914 } catch (RemoteException e) { 1915 } 1916 1917 if (DEBUG_ORIENTATION) Log.v( 1918 TAG, "Relayout returned: frame=" + frame + ", surface=" + mSurface); 1919 1920 mAttachInfo.mWindowLeft = frame.left; 1921 mAttachInfo.mWindowTop = frame.top; 1922 1923 // !!FIXME!! This next section handles the case where we did not get the 1924 // window size we asked for. We should avoid this by getting a maximum size from 1925 // the window session beforehand. 1926 if (mWidth != frame.width() || mHeight != frame.height()) { 1927 mWidth = frame.width(); 1928 mHeight = frame.height(); 1929 } 1930 1931 if (mSurfaceHolder != null) { 1932 // The app owns the surface; tell it about what is going on. 1933 if (mSurface.isValid()) { 1934 // XXX .copyFrom() doesn't work! 1935 //mSurfaceHolder.mSurface.copyFrom(mSurface); 1936 mSurfaceHolder.mSurface = mSurface; 1937 } 1938 mSurfaceHolder.setSurfaceFrameSize(mWidth, mHeight); 1939 mSurfaceHolder.mSurfaceLock.unlock(); 1940 if (mSurface.isValid()) { 1941 if (!hadSurface || surfaceGenerationId != mSurface.getGenerationId()) { 1942 mSurfaceHolder.ungetCallbacks(); 1943 1944 mIsCreating = true; 1945 mSurfaceHolderCallback.surfaceCreated(mSurfaceHolder); 1946 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1947 if (callbacks != null) { 1948 for (SurfaceHolder.Callback c : callbacks) { 1949 c.surfaceCreated(mSurfaceHolder); 1950 } 1951 } 1952 surfaceChanged = true; 1953 } 1954 if (surfaceChanged) { 1955 mSurfaceHolderCallback.surfaceChanged(mSurfaceHolder, 1956 lp.format, mWidth, mHeight); 1957 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1958 if (callbacks != null) { 1959 for (SurfaceHolder.Callback c : callbacks) { 1960 c.surfaceChanged(mSurfaceHolder, lp.format, 1961 mWidth, mHeight); 1962 } 1963 } 1964 } 1965 mIsCreating = false; 1966 } else if (hadSurface) { 1967 mSurfaceHolder.ungetCallbacks(); 1968 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1969 mSurfaceHolderCallback.surfaceDestroyed(mSurfaceHolder); 1970 if (callbacks != null) { 1971 for (SurfaceHolder.Callback c : callbacks) { 1972 c.surfaceDestroyed(mSurfaceHolder); 1973 } 1974 } 1975 mSurfaceHolder.mSurfaceLock.lock(); 1976 try { 1977 mSurfaceHolder.mSurface = new Surface(); 1978 } finally { 1979 mSurfaceHolder.mSurfaceLock.unlock(); 1980 } 1981 } 1982 } 1983 1984 final ThreadedRenderer hardwareRenderer = mAttachInfo.mHardwareRenderer; 1985 if (hardwareRenderer != null && hardwareRenderer.isEnabled()) { 1986 if (hwInitialized 1987 || mWidth != hardwareRenderer.getWidth() 1988 || mHeight != hardwareRenderer.getHeight() 1989 || mNeedsHwRendererSetup) { 1990 hardwareRenderer.setup(mWidth, mHeight, mAttachInfo, 1991 mWindowAttributes.surfaceInsets); 1992 mNeedsHwRendererSetup = false; 1993 } 1994 } 1995 1996 if (!mStopped || mReportNextDraw) { 1997 boolean focusChangedDueToTouchMode = ensureTouchModeLocally( 1998 (relayoutResult&WindowManagerGlobal.RELAYOUT_RES_IN_TOUCH_MODE) != 0); 1999 if (focusChangedDueToTouchMode || mWidth != host.getMeasuredWidth() 2000 || mHeight != host.getMeasuredHeight() || contentInsetsChanged || 2001 updatedConfiguration) { 2002 int childWidthMeasureSpec = getRootMeasureSpec(mWidth, lp.width); 2003 int childHeightMeasureSpec = getRootMeasureSpec(mHeight, lp.height); 2004 2005 if (DEBUG_LAYOUT) Log.v(mTag, "Ooops, something changed! mWidth=" 2006 + mWidth + " measuredWidth=" + host.getMeasuredWidth() 2007 + " mHeight=" + mHeight 2008 + " measuredHeight=" + host.getMeasuredHeight() 2009 + " coveredInsetsChanged=" + contentInsetsChanged); 2010 2011 // Ask host how big it wants to be 2012 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 2013 2014 // Implementation of weights from WindowManager.LayoutParams 2015 // We just grow the dimensions as needed and re-measure if 2016 // needs be 2017 int width = host.getMeasuredWidth(); 2018 int height = host.getMeasuredHeight(); 2019 boolean measureAgain = false; 2020 2021 if (lp.horizontalWeight > 0.0f) { 2022 width += (int) ((mWidth - width) * lp.horizontalWeight); 2023 childWidthMeasureSpec = MeasureSpec.makeMeasureSpec(width, 2024 MeasureSpec.EXACTLY); 2025 measureAgain = true; 2026 } 2027 if (lp.verticalWeight > 0.0f) { 2028 height += (int) ((mHeight - height) * lp.verticalWeight); 2029 childHeightMeasureSpec = MeasureSpec.makeMeasureSpec(height, 2030 MeasureSpec.EXACTLY); 2031 measureAgain = true; 2032 } 2033 2034 if (measureAgain) { 2035 if (DEBUG_LAYOUT) Log.v(mTag, 2036 "And hey let's measure once more: width=" + width 2037 + " height=" + height); 2038 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 2039 } 2040 2041 layoutRequested = true; 2042 } 2043 } 2044 } else { 2045 // Not the first pass and no window/insets/visibility change but the window 2046 // may have moved and we need check that and if so to update the left and right 2047 // in the attach info. We translate only the window frame since on window move 2048 // the window manager tells us only for the new frame but the insets are the 2049 // same and we do not want to translate them more than once. 2050 maybeHandleWindowMove(frame); 2051 } 2052 2053 final boolean didLayout = layoutRequested && (!mStopped || mReportNextDraw); 2054 boolean triggerGlobalLayoutListener = didLayout 2055 || mAttachInfo.mRecomputeGlobalAttributes; 2056 if (didLayout) { 2057 performLayout(lp, mWidth, mHeight); 2058 2059 // By this point all views have been sized and positioned 2060 // We can compute the transparent area 2061 2062 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 2063 // start out transparent 2064 // TODO: AVOID THAT CALL BY CACHING THE RESULT? 2065 host.getLocationInWindow(mTmpLocation); 2066 mTransparentRegion.set(mTmpLocation[0], mTmpLocation[1], 2067 mTmpLocation[0] + host.mRight - host.mLeft, 2068 mTmpLocation[1] + host.mBottom - host.mTop); 2069 2070 host.gatherTransparentRegion(mTransparentRegion); 2071 if (mTranslator != null) { 2072 mTranslator.translateRegionInWindowToScreen(mTransparentRegion); 2073 } 2074 2075 if (!mTransparentRegion.equals(mPreviousTransparentRegion)) { 2076 mPreviousTransparentRegion.set(mTransparentRegion); 2077 mFullRedrawNeeded = true; 2078 // reconfigure window manager 2079 try { 2080 mWindowSession.setTransparentRegion(mWindow, mTransparentRegion); 2081 } catch (RemoteException e) { 2082 } 2083 } 2084 } 2085 2086 if (DBG) { 2087 System.out.println("======================================"); 2088 System.out.println("performTraversals -- after setFrame"); 2089 host.debug(); 2090 } 2091 } 2092 2093 if (triggerGlobalLayoutListener) { 2094 mAttachInfo.mRecomputeGlobalAttributes = false; 2095 mAttachInfo.mTreeObserver.dispatchOnGlobalLayout(); 2096 } 2097 2098 if (computesInternalInsets) { 2099 // Clear the original insets. 2100 final ViewTreeObserver.InternalInsetsInfo insets = mAttachInfo.mGivenInternalInsets; 2101 insets.reset(); 2102 2103 // Compute new insets in place. 2104 mAttachInfo.mTreeObserver.dispatchOnComputeInternalInsets(insets); 2105 mAttachInfo.mHasNonEmptyGivenInternalInsets = !insets.isEmpty(); 2106 2107 // Tell the window manager. 2108 if (insetsPending || !mLastGivenInsets.equals(insets)) { 2109 mLastGivenInsets.set(insets); 2110 2111 // Translate insets to screen coordinates if needed. 2112 final Rect contentInsets; 2113 final Rect visibleInsets; 2114 final Region touchableRegion; 2115 if (mTranslator != null) { 2116 contentInsets = mTranslator.getTranslatedContentInsets(insets.contentInsets); 2117 visibleInsets = mTranslator.getTranslatedVisibleInsets(insets.visibleInsets); 2118 touchableRegion = mTranslator.getTranslatedTouchableArea(insets.touchableRegion); 2119 } else { 2120 contentInsets = insets.contentInsets; 2121 visibleInsets = insets.visibleInsets; 2122 touchableRegion = insets.touchableRegion; 2123 } 2124 2125 try { 2126 mWindowSession.setInsets(mWindow, insets.mTouchableInsets, 2127 contentInsets, visibleInsets, touchableRegion); 2128 } catch (RemoteException e) { 2129 } 2130 } 2131 } 2132 2133 if (mFirst) { 2134 // handle first focus request 2135 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "First: mView.hasFocus()=" 2136 + mView.hasFocus()); 2137 if (mView != null) { 2138 if (!mView.hasFocus()) { 2139 mView.requestFocus(View.FOCUS_FORWARD); 2140 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "First: requested focused view=" 2141 + mView.findFocus()); 2142 } else { 2143 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "First: existing focused view=" 2144 + mView.findFocus()); 2145 } 2146 } 2147 } 2148 2149 final boolean changedVisibility = (viewVisibilityChanged || mFirst) && isViewVisible; 2150 final boolean hasWindowFocus = mAttachInfo.mHasWindowFocus && isViewVisible; 2151 final boolean regainedFocus = hasWindowFocus && mLostWindowFocus; 2152 if (regainedFocus) { 2153 mLostWindowFocus = false; 2154 } else if (!hasWindowFocus && mHadWindowFocus) { 2155 mLostWindowFocus = true; 2156 } 2157 2158 if (changedVisibility || regainedFocus) { 2159 host.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 2160 } 2161 2162 mFirst = false; 2163 mWillDrawSoon = false; 2164 mNewSurfaceNeeded = false; 2165 mActivityRelaunched = false; 2166 mViewVisibility = viewVisibility; 2167 mHadWindowFocus = hasWindowFocus; 2168 2169 if (hasWindowFocus && !isInLocalFocusMode()) { 2170 final boolean imTarget = WindowManager.LayoutParams 2171 .mayUseInputMethod(mWindowAttributes.flags); 2172 if (imTarget != mLastWasImTarget) { 2173 mLastWasImTarget = imTarget; 2174 InputMethodManager imm = InputMethodManager.peekInstance(); 2175 if (imm != null && imTarget) { 2176 imm.onPreWindowFocus(mView, hasWindowFocus); 2177 imm.onPostWindowFocus(mView, mView.findFocus(), 2178 mWindowAttributes.softInputMode, 2179 !mHasHadWindowFocus, mWindowAttributes.flags); 2180 } 2181 } 2182 } 2183 2184 // Remember if we must report the next draw. 2185 if ((relayoutResult & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 2186 mReportNextDraw = true; 2187 } 2188 2189 boolean cancelDraw = mAttachInfo.mTreeObserver.dispatchOnPreDraw() || !isViewVisible; 2190 2191 if (!cancelDraw && !newSurface) { 2192 if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 2193 for (int i = 0; i < mPendingTransitions.size(); ++i) { 2194 mPendingTransitions.get(i).startChangingAnimations(); 2195 } 2196 mPendingTransitions.clear(); 2197 } 2198 2199 performDraw(); 2200 } else { 2201 if (isViewVisible) { 2202 // Try again 2203 scheduleTraversals(); 2204 } else if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 2205 for (int i = 0; i < mPendingTransitions.size(); ++i) { 2206 mPendingTransitions.get(i).endChangingAnimations(); 2207 } 2208 mPendingTransitions.clear(); 2209 } 2210 } 2211 2212 mIsInTraversal = false; 2213 } 2214 2215 private void maybeHandleWindowMove(Rect frame) { 2216 2217 // TODO: Well, we are checking whether the frame has changed similarly 2218 // to how this is done for the insets. This is however incorrect since 2219 // the insets and the frame are translated. For example, the old frame 2220 // was (1, 1 - 1, 1) and was translated to say (2, 2 - 2, 2), now the new 2221 // reported frame is (2, 2 - 2, 2) which implies no change but this is not 2222 // true since we are comparing a not translated value to a translated one. 2223 // This scenario is rare but we may want to fix that. 2224 2225 final boolean windowMoved = mAttachInfo.mWindowLeft != frame.left 2226 || mAttachInfo.mWindowTop != frame.top; 2227 if (windowMoved) { 2228 if (mTranslator != null) { 2229 mTranslator.translateRectInScreenToAppWinFrame(frame); 2230 } 2231 mAttachInfo.mWindowLeft = frame.left; 2232 mAttachInfo.mWindowTop = frame.top; 2233 } 2234 if (windowMoved || mAttachInfo.mNeedsUpdateLightCenter) { 2235 // Update the light position for the new offsets. 2236 if (mAttachInfo.mHardwareRenderer != null) { 2237 mAttachInfo.mHardwareRenderer.setLightCenter(mAttachInfo); 2238 } 2239 mAttachInfo.mNeedsUpdateLightCenter = false; 2240 } 2241 } 2242 2243 private void handleOutOfResourcesException(Surface.OutOfResourcesException e) { 2244 Log.e(mTag, "OutOfResourcesException initializing HW surface", e); 2245 try { 2246 if (!mWindowSession.outOfMemory(mWindow) && 2247 Process.myUid() != Process.SYSTEM_UID) { 2248 Slog.w(mTag, "No processes killed for memory; killing self"); 2249 Process.killProcess(Process.myPid()); 2250 } 2251 } catch (RemoteException ex) { 2252 } 2253 mLayoutRequested = true; // ask wm for a new surface next time. 2254 } 2255 2256 private void performMeasure(int childWidthMeasureSpec, int childHeightMeasureSpec) { 2257 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "measure"); 2258 try { 2259 mView.measure(childWidthMeasureSpec, childHeightMeasureSpec); 2260 } finally { 2261 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2262 } 2263 } 2264 2265 /** 2266 * Called by {@link android.view.View#isInLayout()} to determine whether the view hierarchy 2267 * is currently undergoing a layout pass. 2268 * 2269 * @return whether the view hierarchy is currently undergoing a layout pass 2270 */ 2271 boolean isInLayout() { 2272 return mInLayout; 2273 } 2274 2275 /** 2276 * Called by {@link android.view.View#requestLayout()} if the view hierarchy is currently 2277 * undergoing a layout pass. requestLayout() should not generally be called during layout, 2278 * unless the container hierarchy knows what it is doing (i.e., it is fine as long as 2279 * all children in that container hierarchy are measured and laid out at the end of the layout 2280 * pass for that container). If requestLayout() is called anyway, we handle it correctly 2281 * by registering all requesters during a frame as it proceeds. At the end of the frame, 2282 * we check all of those views to see if any still have pending layout requests, which 2283 * indicates that they were not correctly handled by their container hierarchy. If that is 2284 * the case, we clear all such flags in the tree, to remove the buggy flag state that leads 2285 * to blank containers, and force a second request/measure/layout pass in this frame. If 2286 * more requestLayout() calls are received during that second layout pass, we post those 2287 * requests to the next frame to avoid possible infinite loops. 2288 * 2289 * <p>The return value from this method indicates whether the request should proceed 2290 * (if it is a request during the first layout pass) or should be skipped and posted to the 2291 * next frame (if it is a request during the second layout pass).</p> 2292 * 2293 * @param view the view that requested the layout. 2294 * 2295 * @return true if request should proceed, false otherwise. 2296 */ 2297 boolean requestLayoutDuringLayout(final View view) { 2298 if (view.mParent == null || view.mAttachInfo == null) { 2299 // Would not normally trigger another layout, so just let it pass through as usual 2300 return true; 2301 } 2302 if (!mLayoutRequesters.contains(view)) { 2303 mLayoutRequesters.add(view); 2304 } 2305 if (!mHandlingLayoutInLayoutRequest) { 2306 // Let the request proceed normally; it will be processed in a second layout pass 2307 // if necessary 2308 return true; 2309 } else { 2310 // Don't let the request proceed during the second layout pass. 2311 // It will post to the next frame instead. 2312 return false; 2313 } 2314 } 2315 2316 private void performLayout(WindowManager.LayoutParams lp, int desiredWindowWidth, 2317 int desiredWindowHeight) { 2318 mLayoutRequested = false; 2319 mScrollMayChange = true; 2320 mInLayout = true; 2321 2322 final View host = mView; 2323 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) { 2324 Log.v(mTag, "Laying out " + host + " to (" + 2325 host.getMeasuredWidth() + ", " + host.getMeasuredHeight() + ")"); 2326 } 2327 2328 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "layout"); 2329 try { 2330 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 2331 2332 mInLayout = false; 2333 int numViewsRequestingLayout = mLayoutRequesters.size(); 2334 if (numViewsRequestingLayout > 0) { 2335 // requestLayout() was called during layout. 2336 // If no layout-request flags are set on the requesting views, there is no problem. 2337 // If some requests are still pending, then we need to clear those flags and do 2338 // a full request/measure/layout pass to handle this situation. 2339 ArrayList<View> validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, 2340 false); 2341 if (validLayoutRequesters != null) { 2342 // Set this flag to indicate that any further requests are happening during 2343 // the second pass, which may result in posting those requests to the next 2344 // frame instead 2345 mHandlingLayoutInLayoutRequest = true; 2346 2347 // Process fresh layout requests, then measure and layout 2348 int numValidRequests = validLayoutRequesters.size(); 2349 for (int i = 0; i < numValidRequests; ++i) { 2350 final View view = validLayoutRequesters.get(i); 2351 Log.w("View", "requestLayout() improperly called by " + view + 2352 " during layout: running second layout pass"); 2353 view.requestLayout(); 2354 } 2355 measureHierarchy(host, lp, mView.getContext().getResources(), 2356 desiredWindowWidth, desiredWindowHeight); 2357 mInLayout = true; 2358 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 2359 2360 mHandlingLayoutInLayoutRequest = false; 2361 2362 // Check the valid requests again, this time without checking/clearing the 2363 // layout flags, since requests happening during the second pass get noop'd 2364 validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, true); 2365 if (validLayoutRequesters != null) { 2366 final ArrayList<View> finalRequesters = validLayoutRequesters; 2367 // Post second-pass requests to the next frame 2368 getRunQueue().post(new Runnable() { 2369 @Override 2370 public void run() { 2371 int numValidRequests = finalRequesters.size(); 2372 for (int i = 0; i < numValidRequests; ++i) { 2373 final View view = finalRequesters.get(i); 2374 Log.w("View", "requestLayout() improperly called by " + view + 2375 " during second layout pass: posting in next frame"); 2376 view.requestLayout(); 2377 } 2378 } 2379 }); 2380 } 2381 } 2382 2383 } 2384 } finally { 2385 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2386 } 2387 mInLayout = false; 2388 } 2389 2390 /** 2391 * This method is called during layout when there have been calls to requestLayout() during 2392 * layout. It walks through the list of views that requested layout to determine which ones 2393 * still need it, based on visibility in the hierarchy and whether they have already been 2394 * handled (as is usually the case with ListView children). 2395 * 2396 * @param layoutRequesters The list of views that requested layout during layout 2397 * @param secondLayoutRequests Whether the requests were issued during the second layout pass. 2398 * If so, the FORCE_LAYOUT flag was not set on requesters. 2399 * @return A list of the actual views that still need to be laid out. 2400 */ 2401 private ArrayList<View> getValidLayoutRequesters(ArrayList<View> layoutRequesters, 2402 boolean secondLayoutRequests) { 2403 2404 int numViewsRequestingLayout = layoutRequesters.size(); 2405 ArrayList<View> validLayoutRequesters = null; 2406 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2407 View view = layoutRequesters.get(i); 2408 if (view != null && view.mAttachInfo != null && view.mParent != null && 2409 (secondLayoutRequests || (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) == 2410 View.PFLAG_FORCE_LAYOUT)) { 2411 boolean gone = false; 2412 View parent = view; 2413 // Only trigger new requests for views in a non-GONE hierarchy 2414 while (parent != null) { 2415 if ((parent.mViewFlags & View.VISIBILITY_MASK) == View.GONE) { 2416 gone = true; 2417 break; 2418 } 2419 if (parent.mParent instanceof View) { 2420 parent = (View) parent.mParent; 2421 } else { 2422 parent = null; 2423 } 2424 } 2425 if (!gone) { 2426 if (validLayoutRequesters == null) { 2427 validLayoutRequesters = new ArrayList<View>(); 2428 } 2429 validLayoutRequesters.add(view); 2430 } 2431 } 2432 } 2433 if (!secondLayoutRequests) { 2434 // If we're checking the layout flags, then we need to clean them up also 2435 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2436 View view = layoutRequesters.get(i); 2437 while (view != null && 2438 (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) != 0) { 2439 view.mPrivateFlags &= ~View.PFLAG_FORCE_LAYOUT; 2440 if (view.mParent instanceof View) { 2441 view = (View) view.mParent; 2442 } else { 2443 view = null; 2444 } 2445 } 2446 } 2447 } 2448 layoutRequesters.clear(); 2449 return validLayoutRequesters; 2450 } 2451 2452 @Override 2453 public void requestTransparentRegion(View child) { 2454 // the test below should not fail unless someone is messing with us 2455 checkThread(); 2456 if (mView == child) { 2457 mView.mPrivateFlags |= View.PFLAG_REQUEST_TRANSPARENT_REGIONS; 2458 // Need to make sure we re-evaluate the window attributes next 2459 // time around, to ensure the window has the correct format. 2460 mWindowAttributesChanged = true; 2461 mWindowAttributesChangesFlag = 0; 2462 requestLayout(); 2463 } 2464 } 2465 2466 /** 2467 * Figures out the measure spec for the root view in a window based on it's 2468 * layout params. 2469 * 2470 * @param windowSize 2471 * The available width or height of the window 2472 * 2473 * @param rootDimension 2474 * The layout params for one dimension (width or height) of the 2475 * window. 2476 * 2477 * @return The measure spec to use to measure the root view. 2478 */ 2479 private static int getRootMeasureSpec(int windowSize, int rootDimension) { 2480 int measureSpec; 2481 switch (rootDimension) { 2482 2483 case ViewGroup.LayoutParams.MATCH_PARENT: 2484 // Window can't resize. Force root view to be windowSize. 2485 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.EXACTLY); 2486 break; 2487 case ViewGroup.LayoutParams.WRAP_CONTENT: 2488 // Window can resize. Set max size for root view. 2489 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.AT_MOST); 2490 break; 2491 default: 2492 // Window wants to be an exact size. Force root view to be that size. 2493 measureSpec = MeasureSpec.makeMeasureSpec(rootDimension, MeasureSpec.EXACTLY); 2494 break; 2495 } 2496 return measureSpec; 2497 } 2498 2499 int mHardwareXOffset; 2500 int mHardwareYOffset; 2501 2502 @Override 2503 public void onHardwarePreDraw(DisplayListCanvas canvas) { 2504 canvas.translate(-mHardwareXOffset, -mHardwareYOffset); 2505 } 2506 2507 @Override 2508 public void onHardwarePostDraw(DisplayListCanvas canvas) { 2509 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2510 for (int i = mWindowCallbacks.size() - 1; i >= 0; i--) { 2511 mWindowCallbacks.get(i).onPostDraw(canvas); 2512 } 2513 } 2514 2515 /** 2516 * @hide 2517 */ 2518 void outputDisplayList(View view) { 2519 view.mRenderNode.output(); 2520 if (mAttachInfo.mHardwareRenderer != null) { 2521 ((ThreadedRenderer)mAttachInfo.mHardwareRenderer).serializeDisplayListTree(); 2522 } 2523 } 2524 2525 /** 2526 * @see #PROPERTY_PROFILE_RENDERING 2527 */ 2528 private void profileRendering(boolean enabled) { 2529 if (mProfileRendering) { 2530 mRenderProfilingEnabled = enabled; 2531 2532 if (mRenderProfiler != null) { 2533 mChoreographer.removeFrameCallback(mRenderProfiler); 2534 } 2535 if (mRenderProfilingEnabled) { 2536 if (mRenderProfiler == null) { 2537 mRenderProfiler = new Choreographer.FrameCallback() { 2538 @Override 2539 public void doFrame(long frameTimeNanos) { 2540 mDirty.set(0, 0, mWidth, mHeight); 2541 scheduleTraversals(); 2542 if (mRenderProfilingEnabled) { 2543 mChoreographer.postFrameCallback(mRenderProfiler); 2544 } 2545 } 2546 }; 2547 } 2548 mChoreographer.postFrameCallback(mRenderProfiler); 2549 } else { 2550 mRenderProfiler = null; 2551 } 2552 } 2553 } 2554 2555 /** 2556 * Called from draw() when DEBUG_FPS is enabled 2557 */ 2558 private void trackFPS() { 2559 // Tracks frames per second drawn. First value in a series of draws may be bogus 2560 // because it down not account for the intervening idle time 2561 long nowTime = System.currentTimeMillis(); 2562 if (mFpsStartTime < 0) { 2563 mFpsStartTime = mFpsPrevTime = nowTime; 2564 mFpsNumFrames = 0; 2565 } else { 2566 ++mFpsNumFrames; 2567 String thisHash = Integer.toHexString(System.identityHashCode(this)); 2568 long frameTime = nowTime - mFpsPrevTime; 2569 long totalTime = nowTime - mFpsStartTime; 2570 Log.v(mTag, "0x" + thisHash + "\tFrame time:\t" + frameTime); 2571 mFpsPrevTime = nowTime; 2572 if (totalTime > 1000) { 2573 float fps = (float) mFpsNumFrames * 1000 / totalTime; 2574 Log.v(mTag, "0x" + thisHash + "\tFPS:\t" + fps); 2575 mFpsStartTime = nowTime; 2576 mFpsNumFrames = 0; 2577 } 2578 } 2579 } 2580 2581 private void performDraw() { 2582 if (mAttachInfo.mDisplayState == Display.STATE_OFF && !mReportNextDraw) { 2583 return; 2584 } 2585 2586 final boolean fullRedrawNeeded = mFullRedrawNeeded; 2587 mFullRedrawNeeded = false; 2588 2589 mIsDrawing = true; 2590 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "draw"); 2591 try { 2592 draw(fullRedrawNeeded); 2593 } finally { 2594 mIsDrawing = false; 2595 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2596 } 2597 2598 // For whatever reason we didn't create a HardwareRenderer, end any 2599 // hardware animations that are now dangling 2600 if (mAttachInfo.mPendingAnimatingRenderNodes != null) { 2601 final int count = mAttachInfo.mPendingAnimatingRenderNodes.size(); 2602 for (int i = 0; i < count; i++) { 2603 mAttachInfo.mPendingAnimatingRenderNodes.get(i).endAllAnimators(); 2604 } 2605 mAttachInfo.mPendingAnimatingRenderNodes.clear(); 2606 } 2607 2608 if (mReportNextDraw) { 2609 mReportNextDraw = false; 2610 2611 // if we're using multi-thread renderer, wait for the window frame draws 2612 if (mWindowDrawCountDown != null) { 2613 try { 2614 mWindowDrawCountDown.await(); 2615 } catch (InterruptedException e) { 2616 Log.e(mTag, "Window redraw count down interruped!"); 2617 } 2618 mWindowDrawCountDown = null; 2619 } 2620 2621 if (mAttachInfo.mHardwareRenderer != null) { 2622 mAttachInfo.mHardwareRenderer.fence(); 2623 mAttachInfo.mHardwareRenderer.setStopped(mStopped); 2624 } 2625 2626 if (LOCAL_LOGV) { 2627 Log.v(mTag, "FINISHED DRAWING: " + mWindowAttributes.getTitle()); 2628 } 2629 if (mSurfaceHolder != null && mSurface.isValid()) { 2630 mSurfaceHolderCallback.surfaceRedrawNeeded(mSurfaceHolder); 2631 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 2632 if (callbacks != null) { 2633 for (SurfaceHolder.Callback c : callbacks) { 2634 if (c instanceof SurfaceHolder.Callback2) { 2635 ((SurfaceHolder.Callback2)c).surfaceRedrawNeeded(mSurfaceHolder); 2636 } 2637 } 2638 } 2639 } 2640 try { 2641 mWindowSession.finishDrawing(mWindow); 2642 } catch (RemoteException e) { 2643 } 2644 } 2645 } 2646 2647 private void draw(boolean fullRedrawNeeded) { 2648 Surface surface = mSurface; 2649 if (!surface.isValid()) { 2650 return; 2651 } 2652 2653 if (DEBUG_FPS) { 2654 trackFPS(); 2655 } 2656 2657 if (!sFirstDrawComplete) { 2658 synchronized (sFirstDrawHandlers) { 2659 sFirstDrawComplete = true; 2660 final int count = sFirstDrawHandlers.size(); 2661 for (int i = 0; i< count; i++) { 2662 mHandler.post(sFirstDrawHandlers.get(i)); 2663 } 2664 } 2665 } 2666 2667 scrollToRectOrFocus(null, false); 2668 2669 if (mAttachInfo.mViewScrollChanged) { 2670 mAttachInfo.mViewScrollChanged = false; 2671 mAttachInfo.mTreeObserver.dispatchOnScrollChanged(); 2672 } 2673 2674 boolean animating = mScroller != null && mScroller.computeScrollOffset(); 2675 final int curScrollY; 2676 if (animating) { 2677 curScrollY = mScroller.getCurrY(); 2678 } else { 2679 curScrollY = mScrollY; 2680 } 2681 if (mCurScrollY != curScrollY) { 2682 mCurScrollY = curScrollY; 2683 fullRedrawNeeded = true; 2684 if (mView instanceof RootViewSurfaceTaker) { 2685 ((RootViewSurfaceTaker) mView).onRootViewScrollYChanged(mCurScrollY); 2686 } 2687 } 2688 2689 final float appScale = mAttachInfo.mApplicationScale; 2690 final boolean scalingRequired = mAttachInfo.mScalingRequired; 2691 2692 int resizeAlpha = 0; 2693 2694 final Rect dirty = mDirty; 2695 if (mSurfaceHolder != null) { 2696 // The app owns the surface, we won't draw. 2697 dirty.setEmpty(); 2698 if (animating && mScroller != null) { 2699 mScroller.abortAnimation(); 2700 } 2701 return; 2702 } 2703 2704 if (fullRedrawNeeded) { 2705 mAttachInfo.mIgnoreDirtyState = true; 2706 dirty.set(0, 0, (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 2707 } 2708 2709 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2710 Log.v(mTag, "Draw " + mView + "/" 2711 + mWindowAttributes.getTitle() 2712 + ": dirty={" + dirty.left + "," + dirty.top 2713 + "," + dirty.right + "," + dirty.bottom + "} surface=" 2714 + surface + " surface.isValid()=" + surface.isValid() + ", appScale:" + 2715 appScale + ", width=" + mWidth + ", height=" + mHeight); 2716 } 2717 2718 mAttachInfo.mTreeObserver.dispatchOnDraw(); 2719 2720 int xOffset = -mCanvasOffsetX; 2721 int yOffset = -mCanvasOffsetY + curScrollY; 2722 final WindowManager.LayoutParams params = mWindowAttributes; 2723 final Rect surfaceInsets = params != null ? params.surfaceInsets : null; 2724 if (surfaceInsets != null) { 2725 xOffset -= surfaceInsets.left; 2726 yOffset -= surfaceInsets.top; 2727 2728 // Offset dirty rect for surface insets. 2729 dirty.offset(surfaceInsets.left, surfaceInsets.right); 2730 } 2731 2732 boolean accessibilityFocusDirty = false; 2733 final Drawable drawable = mAttachInfo.mAccessibilityFocusDrawable; 2734 if (drawable != null) { 2735 final Rect bounds = mAttachInfo.mTmpInvalRect; 2736 final boolean hasFocus = getAccessibilityFocusedRect(bounds); 2737 if (!hasFocus) { 2738 bounds.setEmpty(); 2739 } 2740 if (!bounds.equals(drawable.getBounds())) { 2741 accessibilityFocusDirty = true; 2742 } 2743 } 2744 2745 mAttachInfo.mDrawingTime = 2746 mChoreographer.getFrameTimeNanos() / TimeUtils.NANOS_PER_MS; 2747 2748 if (!dirty.isEmpty() || mIsAnimating || accessibilityFocusDirty) { 2749 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled()) { 2750 // If accessibility focus moved, always invalidate the root. 2751 boolean invalidateRoot = accessibilityFocusDirty || mInvalidateRootRequested; 2752 mInvalidateRootRequested = false; 2753 2754 // Draw with hardware renderer. 2755 mIsAnimating = false; 2756 2757 if (mHardwareYOffset != yOffset || mHardwareXOffset != xOffset) { 2758 mHardwareYOffset = yOffset; 2759 mHardwareXOffset = xOffset; 2760 invalidateRoot = true; 2761 } 2762 2763 if (invalidateRoot) { 2764 mAttachInfo.mHardwareRenderer.invalidateRoot(); 2765 } 2766 2767 dirty.setEmpty(); 2768 2769 // Stage the content drawn size now. It will be transferred to the renderer 2770 // shortly before the draw commands get send to the renderer. 2771 final boolean updated = updateContentDrawBounds(); 2772 2773 if (mReportNextDraw) { 2774 // report next draw overrides setStopped() 2775 // This value is re-sync'd to the value of mStopped 2776 // in the handling of mReportNextDraw post-draw. 2777 mAttachInfo.mHardwareRenderer.setStopped(false); 2778 } 2779 2780 if (updated) { 2781 requestDrawWindow(); 2782 } 2783 2784 mAttachInfo.mHardwareRenderer.draw(mView, mAttachInfo, this); 2785 } else { 2786 // If we get here with a disabled & requested hardware renderer, something went 2787 // wrong (an invalidate posted right before we destroyed the hardware surface 2788 // for instance) so we should just bail out. Locking the surface with software 2789 // rendering at this point would lock it forever and prevent hardware renderer 2790 // from doing its job when it comes back. 2791 // Before we request a new frame we must however attempt to reinitiliaze the 2792 // hardware renderer if it's in requested state. This would happen after an 2793 // eglTerminate() for instance. 2794 if (mAttachInfo.mHardwareRenderer != null && 2795 !mAttachInfo.mHardwareRenderer.isEnabled() && 2796 mAttachInfo.mHardwareRenderer.isRequested()) { 2797 2798 try { 2799 mAttachInfo.mHardwareRenderer.initializeIfNeeded( 2800 mWidth, mHeight, mAttachInfo, mSurface, surfaceInsets); 2801 } catch (OutOfResourcesException e) { 2802 handleOutOfResourcesException(e); 2803 return; 2804 } 2805 2806 mFullRedrawNeeded = true; 2807 scheduleTraversals(); 2808 return; 2809 } 2810 2811 if (!drawSoftware(surface, mAttachInfo, xOffset, yOffset, scalingRequired, dirty)) { 2812 return; 2813 } 2814 } 2815 } 2816 2817 if (animating) { 2818 mFullRedrawNeeded = true; 2819 scheduleTraversals(); 2820 } 2821 } 2822 2823 /** 2824 * @return true if drawing was successful, false if an error occurred 2825 */ 2826 private boolean drawSoftware(Surface surface, AttachInfo attachInfo, int xoff, int yoff, 2827 boolean scalingRequired, Rect dirty) { 2828 2829 // Draw with software renderer. 2830 final Canvas canvas; 2831 try { 2832 final int left = dirty.left; 2833 final int top = dirty.top; 2834 final int right = dirty.right; 2835 final int bottom = dirty.bottom; 2836 2837 canvas = mSurface.lockCanvas(dirty); 2838 2839 // The dirty rectangle can be modified by Surface.lockCanvas() 2840 //noinspection ConstantConditions 2841 if (left != dirty.left || top != dirty.top || right != dirty.right 2842 || bottom != dirty.bottom) { 2843 attachInfo.mIgnoreDirtyState = true; 2844 } 2845 2846 // TODO: Do this in native 2847 canvas.setDensity(mDensity); 2848 } catch (Surface.OutOfResourcesException e) { 2849 handleOutOfResourcesException(e); 2850 return false; 2851 } catch (IllegalArgumentException e) { 2852 Log.e(mTag, "Could not lock surface", e); 2853 // Don't assume this is due to out of memory, it could be 2854 // something else, and if it is something else then we could 2855 // kill stuff (or ourself) for no reason. 2856 mLayoutRequested = true; // ask wm for a new surface next time. 2857 return false; 2858 } 2859 2860 try { 2861 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2862 Log.v(mTag, "Surface " + surface + " drawing to bitmap w=" 2863 + canvas.getWidth() + ", h=" + canvas.getHeight()); 2864 //canvas.drawARGB(255, 255, 0, 0); 2865 } 2866 2867 // If this bitmap's format includes an alpha channel, we 2868 // need to clear it before drawing so that the child will 2869 // properly re-composite its drawing on a transparent 2870 // background. This automatically respects the clip/dirty region 2871 // or 2872 // If we are applying an offset, we need to clear the area 2873 // where the offset doesn't appear to avoid having garbage 2874 // left in the blank areas. 2875 if (!canvas.isOpaque() || yoff != 0 || xoff != 0) { 2876 canvas.drawColor(0, PorterDuff.Mode.CLEAR); 2877 } 2878 2879 dirty.setEmpty(); 2880 mIsAnimating = false; 2881 mView.mPrivateFlags |= View.PFLAG_DRAWN; 2882 2883 if (DEBUG_DRAW) { 2884 Context cxt = mView.getContext(); 2885 Log.i(mTag, "Drawing: package:" + cxt.getPackageName() + 2886 ", metrics=" + cxt.getResources().getDisplayMetrics() + 2887 ", compatibilityInfo=" + cxt.getResources().getCompatibilityInfo()); 2888 } 2889 try { 2890 canvas.translate(-xoff, -yoff); 2891 if (mTranslator != null) { 2892 mTranslator.translateCanvas(canvas); 2893 } 2894 canvas.setScreenDensity(scalingRequired ? mNoncompatDensity : 0); 2895 attachInfo.mSetIgnoreDirtyState = false; 2896 2897 mView.draw(canvas); 2898 2899 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2900 } finally { 2901 if (!attachInfo.mSetIgnoreDirtyState) { 2902 // Only clear the flag if it was not set during the mView.draw() call 2903 attachInfo.mIgnoreDirtyState = false; 2904 } 2905 } 2906 } finally { 2907 try { 2908 surface.unlockCanvasAndPost(canvas); 2909 } catch (IllegalArgumentException e) { 2910 Log.e(mTag, "Could not unlock surface", e); 2911 mLayoutRequested = true; // ask wm for a new surface next time. 2912 //noinspection ReturnInsideFinallyBlock 2913 return false; 2914 } 2915 2916 if (LOCAL_LOGV) { 2917 Log.v(mTag, "Surface " + surface + " unlockCanvasAndPost"); 2918 } 2919 } 2920 return true; 2921 } 2922 2923 /** 2924 * We want to draw a highlight around the current accessibility focused. 2925 * Since adding a style for all possible view is not a viable option we 2926 * have this specialized drawing method. 2927 * 2928 * Note: We are doing this here to be able to draw the highlight for 2929 * virtual views in addition to real ones. 2930 * 2931 * @param canvas The canvas on which to draw. 2932 */ 2933 private void drawAccessibilityFocusedDrawableIfNeeded(Canvas canvas) { 2934 final Rect bounds = mAttachInfo.mTmpInvalRect; 2935 if (getAccessibilityFocusedRect(bounds)) { 2936 final Drawable drawable = getAccessibilityFocusedDrawable(); 2937 if (drawable != null) { 2938 drawable.setBounds(bounds); 2939 drawable.draw(canvas); 2940 } 2941 } else if (mAttachInfo.mAccessibilityFocusDrawable != null) { 2942 mAttachInfo.mAccessibilityFocusDrawable.setBounds(0, 0, 0, 0); 2943 } 2944 } 2945 2946 private boolean getAccessibilityFocusedRect(Rect bounds) { 2947 final AccessibilityManager manager = AccessibilityManager.getInstance(mView.mContext); 2948 if (!manager.isEnabled() || !manager.isTouchExplorationEnabled()) { 2949 return false; 2950 } 2951 2952 final View host = mAccessibilityFocusedHost; 2953 if (host == null || host.mAttachInfo == null) { 2954 return false; 2955 } 2956 2957 final AccessibilityNodeProvider provider = host.getAccessibilityNodeProvider(); 2958 if (provider == null) { 2959 host.getBoundsOnScreen(bounds, true); 2960 } else if (mAccessibilityFocusedVirtualView != null) { 2961 mAccessibilityFocusedVirtualView.getBoundsInScreen(bounds); 2962 } else { 2963 return false; 2964 } 2965 2966 // Transform the rect into window-relative coordinates. 2967 final AttachInfo attachInfo = mAttachInfo; 2968 bounds.offset(0, attachInfo.mViewRootImpl.mScrollY); 2969 bounds.offset(-attachInfo.mWindowLeft, -attachInfo.mWindowTop); 2970 if (!bounds.intersect(0, 0, attachInfo.mViewRootImpl.mWidth, 2971 attachInfo.mViewRootImpl.mHeight)) { 2972 // If no intersection, set bounds to empty. 2973 bounds.setEmpty(); 2974 } 2975 return !bounds.isEmpty(); 2976 } 2977 2978 private Drawable getAccessibilityFocusedDrawable() { 2979 // Lazily load the accessibility focus drawable. 2980 if (mAttachInfo.mAccessibilityFocusDrawable == null) { 2981 final TypedValue value = new TypedValue(); 2982 final boolean resolved = mView.mContext.getTheme().resolveAttribute( 2983 R.attr.accessibilityFocusedDrawable, value, true); 2984 if (resolved) { 2985 mAttachInfo.mAccessibilityFocusDrawable = 2986 mView.mContext.getDrawable(value.resourceId); 2987 } 2988 } 2989 return mAttachInfo.mAccessibilityFocusDrawable; 2990 } 2991 2992 /** 2993 * Requests that the root render node is invalidated next time we perform a draw, such that 2994 * {@link WindowCallbacks#onPostDraw} gets called. 2995 */ 2996 public void requestInvalidateRootRenderNode() { 2997 mInvalidateRootRequested = true; 2998 } 2999 3000 boolean scrollToRectOrFocus(Rect rectangle, boolean immediate) { 3001 final Rect ci = mAttachInfo.mContentInsets; 3002 final Rect vi = mAttachInfo.mVisibleInsets; 3003 int scrollY = 0; 3004 boolean handled = false; 3005 3006 if (vi.left > ci.left || vi.top > ci.top 3007 || vi.right > ci.right || vi.bottom > ci.bottom) { 3008 // We'll assume that we aren't going to change the scroll 3009 // offset, since we want to avoid that unless it is actually 3010 // going to make the focus visible... otherwise we scroll 3011 // all over the place. 3012 scrollY = mScrollY; 3013 // We can be called for two different situations: during a draw, 3014 // to update the scroll position if the focus has changed (in which 3015 // case 'rectangle' is null), or in response to a 3016 // requestChildRectangleOnScreen() call (in which case 'rectangle' 3017 // is non-null and we just want to scroll to whatever that 3018 // rectangle is). 3019 final View focus = mView.findFocus(); 3020 if (focus == null) { 3021 return false; 3022 } 3023 View lastScrolledFocus = (mLastScrolledFocus != null) ? mLastScrolledFocus.get() : null; 3024 if (focus != lastScrolledFocus) { 3025 // If the focus has changed, then ignore any requests to scroll 3026 // to a rectangle; first we want to make sure the entire focus 3027 // view is visible. 3028 rectangle = null; 3029 } 3030 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "Eval scroll: focus=" + focus 3031 + " rectangle=" + rectangle + " ci=" + ci 3032 + " vi=" + vi); 3033 if (focus == lastScrolledFocus && !mScrollMayChange && rectangle == null) { 3034 // Optimization: if the focus hasn't changed since last 3035 // time, and no layout has happened, then just leave things 3036 // as they are. 3037 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "Keeping scroll y=" 3038 + mScrollY + " vi=" + vi.toShortString()); 3039 } else { 3040 // We need to determine if the currently focused view is 3041 // within the visible part of the window and, if not, apply 3042 // a pan so it can be seen. 3043 mLastScrolledFocus = new WeakReference<View>(focus); 3044 mScrollMayChange = false; 3045 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "Need to scroll?"); 3046 // Try to find the rectangle from the focus view. 3047 if (focus.getGlobalVisibleRect(mVisRect, null)) { 3048 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "Root w=" 3049 + mView.getWidth() + " h=" + mView.getHeight() 3050 + " ci=" + ci.toShortString() 3051 + " vi=" + vi.toShortString()); 3052 if (rectangle == null) { 3053 focus.getFocusedRect(mTempRect); 3054 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "Focus " + focus 3055 + ": focusRect=" + mTempRect.toShortString()); 3056 if (mView instanceof ViewGroup) { 3057 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 3058 focus, mTempRect); 3059 } 3060 if (DEBUG_INPUT_RESIZE) Log.v(mTag, 3061 "Focus in window: focusRect=" 3062 + mTempRect.toShortString() 3063 + " visRect=" + mVisRect.toShortString()); 3064 } else { 3065 mTempRect.set(rectangle); 3066 if (DEBUG_INPUT_RESIZE) Log.v(mTag, 3067 "Request scroll to rect: " 3068 + mTempRect.toShortString() 3069 + " visRect=" + mVisRect.toShortString()); 3070 } 3071 if (mTempRect.intersect(mVisRect)) { 3072 if (DEBUG_INPUT_RESIZE) Log.v(mTag, 3073 "Focus window visible rect: " 3074 + mTempRect.toShortString()); 3075 if (mTempRect.height() > 3076 (mView.getHeight()-vi.top-vi.bottom)) { 3077 // If the focus simply is not going to fit, then 3078 // best is probably just to leave things as-is. 3079 if (DEBUG_INPUT_RESIZE) Log.v(mTag, 3080 "Too tall; leaving scrollY=" + scrollY); 3081 } 3082 // Next, check whether top or bottom is covered based on the non-scrolled 3083 // position, and calculate new scrollY (or set it to 0). 3084 // We can't keep using mScrollY here. For example mScrollY is non-zero 3085 // due to IME, then IME goes away. The current value of mScrollY leaves top 3086 // and bottom both visible, but we still need to scroll it back to 0. 3087 else if (mTempRect.top < vi.top) { 3088 scrollY = mTempRect.top - vi.top; 3089 if (DEBUG_INPUT_RESIZE) Log.v(mTag, 3090 "Top covered; scrollY=" + scrollY); 3091 } else if (mTempRect.bottom > (mView.getHeight()-vi.bottom)) { 3092 scrollY = mTempRect.bottom - (mView.getHeight()-vi.bottom); 3093 if (DEBUG_INPUT_RESIZE) Log.v(mTag, 3094 "Bottom covered; scrollY=" + scrollY); 3095 } else { 3096 scrollY = 0; 3097 } 3098 handled = true; 3099 } 3100 } 3101 } 3102 } 3103 3104 if (scrollY != mScrollY) { 3105 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "Pan scroll changed: old=" 3106 + mScrollY + " , new=" + scrollY); 3107 if (!immediate) { 3108 if (mScroller == null) { 3109 mScroller = new Scroller(mView.getContext()); 3110 } 3111 mScroller.startScroll(0, mScrollY, 0, scrollY-mScrollY); 3112 } else if (mScroller != null) { 3113 mScroller.abortAnimation(); 3114 } 3115 mScrollY = scrollY; 3116 } 3117 3118 return handled; 3119 } 3120 3121 /** 3122 * @hide 3123 */ 3124 public View getAccessibilityFocusedHost() { 3125 return mAccessibilityFocusedHost; 3126 } 3127 3128 /** 3129 * @hide 3130 */ 3131 public AccessibilityNodeInfo getAccessibilityFocusedVirtualView() { 3132 return mAccessibilityFocusedVirtualView; 3133 } 3134 3135 void setAccessibilityFocus(View view, AccessibilityNodeInfo node) { 3136 // If we have a virtual view with accessibility focus we need 3137 // to clear the focus and invalidate the virtual view bounds. 3138 if (mAccessibilityFocusedVirtualView != null) { 3139 3140 AccessibilityNodeInfo focusNode = mAccessibilityFocusedVirtualView; 3141 View focusHost = mAccessibilityFocusedHost; 3142 3143 // Wipe the state of the current accessibility focus since 3144 // the call into the provider to clear accessibility focus 3145 // will fire an accessibility event which will end up calling 3146 // this method and we want to have clean state when this 3147 // invocation happens. 3148 mAccessibilityFocusedHost = null; 3149 mAccessibilityFocusedVirtualView = null; 3150 3151 // Clear accessibility focus on the host after clearing state since 3152 // this method may be reentrant. 3153 focusHost.clearAccessibilityFocusNoCallbacks( 3154 AccessibilityNodeInfo.ACTION_ACCESSIBILITY_FOCUS); 3155 3156 AccessibilityNodeProvider provider = focusHost.getAccessibilityNodeProvider(); 3157 if (provider != null) { 3158 // Invalidate the area of the cleared accessibility focus. 3159 focusNode.getBoundsInParent(mTempRect); 3160 focusHost.invalidate(mTempRect); 3161 // Clear accessibility focus in the virtual node. 3162 final int virtualNodeId = AccessibilityNodeInfo.getVirtualDescendantId( 3163 focusNode.getSourceNodeId()); 3164 provider.performAction(virtualNodeId, 3165 AccessibilityNodeInfo.ACTION_CLEAR_ACCESSIBILITY_FOCUS, null); 3166 } 3167 focusNode.recycle(); 3168 } 3169 if (mAccessibilityFocusedHost != null) { 3170 // Clear accessibility focus in the view. 3171 mAccessibilityFocusedHost.clearAccessibilityFocusNoCallbacks( 3172 AccessibilityNodeInfo.ACTION_ACCESSIBILITY_FOCUS); 3173 } 3174 3175 // Set the new focus host and node. 3176 mAccessibilityFocusedHost = view; 3177 mAccessibilityFocusedVirtualView = node; 3178 3179 if (mAttachInfo.mHardwareRenderer != null) { 3180 mAttachInfo.mHardwareRenderer.invalidateRoot(); 3181 } 3182 } 3183 3184 @Override 3185 public void requestChildFocus(View child, View focused) { 3186 if (DEBUG_INPUT_RESIZE) { 3187 Log.v(mTag, "Request child focus: focus now " + focused); 3188 } 3189 checkThread(); 3190 scheduleTraversals(); 3191 } 3192 3193 @Override 3194 public void clearChildFocus(View child) { 3195 if (DEBUG_INPUT_RESIZE) { 3196 Log.v(mTag, "Clearing child focus"); 3197 } 3198 checkThread(); 3199 scheduleTraversals(); 3200 } 3201 3202 @Override 3203 public ViewParent getParentForAccessibility() { 3204 return null; 3205 } 3206 3207 @Override 3208 public void focusableViewAvailable(View v) { 3209 checkThread(); 3210 if (mView != null) { 3211 if (!mView.hasFocus()) { 3212 v.requestFocus(); 3213 } else { 3214 // the one case where will transfer focus away from the current one 3215 // is if the current view is a view group that prefers to give focus 3216 // to its children first AND the view is a descendant of it. 3217 View focused = mView.findFocus(); 3218 if (focused instanceof ViewGroup) { 3219 ViewGroup group = (ViewGroup) focused; 3220 if (group.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 3221 && isViewDescendantOf(v, focused)) { 3222 v.requestFocus(); 3223 } 3224 } 3225 } 3226 } 3227 } 3228 3229 @Override 3230 public void recomputeViewAttributes(View child) { 3231 checkThread(); 3232 if (mView == child) { 3233 mAttachInfo.mRecomputeGlobalAttributes = true; 3234 if (!mWillDrawSoon) { 3235 scheduleTraversals(); 3236 } 3237 } 3238 } 3239 3240 void dispatchDetachedFromWindow() { 3241 if (mView != null && mView.mAttachInfo != null) { 3242 mAttachInfo.mTreeObserver.dispatchOnWindowAttachedChange(false); 3243 mView.dispatchDetachedFromWindow(); 3244 } 3245 3246 mAccessibilityInteractionConnectionManager.ensureNoConnection(); 3247 mAccessibilityManager.removeAccessibilityStateChangeListener( 3248 mAccessibilityInteractionConnectionManager); 3249 mAccessibilityManager.removeHighTextContrastStateChangeListener( 3250 mHighContrastTextManager); 3251 removeSendWindowContentChangedCallback(); 3252 3253 destroyHardwareRenderer(); 3254 3255 setAccessibilityFocus(null, null); 3256 3257 mView.assignParent(null); 3258 mView = null; 3259 mAttachInfo.mRootView = null; 3260 3261 mSurface.release(); 3262 3263 if (mInputQueueCallback != null && mInputQueue != null) { 3264 mInputQueueCallback.onInputQueueDestroyed(mInputQueue); 3265 mInputQueue.dispose(); 3266 mInputQueueCallback = null; 3267 mInputQueue = null; 3268 } 3269 if (mInputEventReceiver != null) { 3270 mInputEventReceiver.dispose(); 3271 mInputEventReceiver = null; 3272 } 3273 try { 3274 mWindowSession.remove(mWindow); 3275 } catch (RemoteException e) { 3276 } 3277 3278 // Dispose the input channel after removing the window so the Window Manager 3279 // doesn't interpret the input channel being closed as an abnormal termination. 3280 if (mInputChannel != null) { 3281 mInputChannel.dispose(); 3282 mInputChannel = null; 3283 } 3284 3285 mDisplayManager.unregisterDisplayListener(mDisplayListener); 3286 3287 unscheduleTraversals(); 3288 } 3289 3290 void updateConfiguration(Configuration config, boolean force) { 3291 if (DEBUG_CONFIGURATION) Log.v(mTag, 3292 "Applying new config to window " 3293 + mWindowAttributes.getTitle() 3294 + ": " + config); 3295 3296 CompatibilityInfo ci = mDisplayAdjustments.getCompatibilityInfo(); 3297 if (!ci.equals(CompatibilityInfo.DEFAULT_COMPATIBILITY_INFO)) { 3298 config = new Configuration(config); 3299 ci.applyToConfiguration(mNoncompatDensity, config); 3300 } 3301 3302 synchronized (sConfigCallbacks) { 3303 for (int i=sConfigCallbacks.size()-1; i>=0; i--) { 3304 sConfigCallbacks.get(i).onConfigurationChanged(config); 3305 } 3306 } 3307 if (mView != null) { 3308 // At this point the resources have been updated to 3309 // have the most recent config, whatever that is. Use 3310 // the one in them which may be newer. 3311 config = mView.getResources().getConfiguration(); 3312 if (force || mLastConfiguration.diff(config) != 0) { 3313 final int lastLayoutDirection = mLastConfiguration.getLayoutDirection(); 3314 final int currentLayoutDirection = config.getLayoutDirection(); 3315 mLastConfiguration.setTo(config); 3316 if (lastLayoutDirection != currentLayoutDirection && 3317 mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 3318 mView.setLayoutDirection(currentLayoutDirection); 3319 } 3320 mView.dispatchConfigurationChanged(config); 3321 } 3322 } 3323 } 3324 3325 /** 3326 * Return true if child is an ancestor of parent, (or equal to the parent). 3327 */ 3328 public static boolean isViewDescendantOf(View child, View parent) { 3329 if (child == parent) { 3330 return true; 3331 } 3332 3333 final ViewParent theParent = child.getParent(); 3334 return (theParent instanceof ViewGroup) && isViewDescendantOf((View) theParent, parent); 3335 } 3336 3337 private static void forceLayout(View view) { 3338 view.forceLayout(); 3339 if (view instanceof ViewGroup) { 3340 ViewGroup group = (ViewGroup) view; 3341 final int count = group.getChildCount(); 3342 for (int i = 0; i < count; i++) { 3343 forceLayout(group.getChildAt(i)); 3344 } 3345 } 3346 } 3347 3348 private final static int MSG_INVALIDATE = 1; 3349 private final static int MSG_INVALIDATE_RECT = 2; 3350 private final static int MSG_DIE = 3; 3351 private final static int MSG_RESIZED = 4; 3352 private final static int MSG_RESIZED_REPORT = 5; 3353 private final static int MSG_WINDOW_FOCUS_CHANGED = 6; 3354 private final static int MSG_DISPATCH_INPUT_EVENT = 7; 3355 private final static int MSG_DISPATCH_APP_VISIBILITY = 8; 3356 private final static int MSG_DISPATCH_GET_NEW_SURFACE = 9; 3357 private final static int MSG_DISPATCH_KEY_FROM_IME = 11; 3358 private final static int MSG_CHECK_FOCUS = 13; 3359 private final static int MSG_CLOSE_SYSTEM_DIALOGS = 14; 3360 private final static int MSG_DISPATCH_DRAG_EVENT = 15; 3361 private final static int MSG_DISPATCH_DRAG_LOCATION_EVENT = 16; 3362 private final static int MSG_DISPATCH_SYSTEM_UI_VISIBILITY = 17; 3363 private final static int MSG_UPDATE_CONFIGURATION = 18; 3364 private final static int MSG_PROCESS_INPUT_EVENTS = 19; 3365 private final static int MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST = 21; 3366 private final static int MSG_INVALIDATE_WORLD = 22; 3367 private final static int MSG_WINDOW_MOVED = 23; 3368 private final static int MSG_SYNTHESIZE_INPUT_EVENT = 24; 3369 private final static int MSG_DISPATCH_WINDOW_SHOWN = 25; 3370 private final static int MSG_REQUEST_KEYBOARD_SHORTCUTS = 26; 3371 private final static int MSG_UPDATE_POINTER_ICON = 27; 3372 3373 final class ViewRootHandler extends Handler { 3374 @Override 3375 public String getMessageName(Message message) { 3376 switch (message.what) { 3377 case MSG_INVALIDATE: 3378 return "MSG_INVALIDATE"; 3379 case MSG_INVALIDATE_RECT: 3380 return "MSG_INVALIDATE_RECT"; 3381 case MSG_DIE: 3382 return "MSG_DIE"; 3383 case MSG_RESIZED: 3384 return "MSG_RESIZED"; 3385 case MSG_RESIZED_REPORT: 3386 return "MSG_RESIZED_REPORT"; 3387 case MSG_WINDOW_FOCUS_CHANGED: 3388 return "MSG_WINDOW_FOCUS_CHANGED"; 3389 case MSG_DISPATCH_INPUT_EVENT: 3390 return "MSG_DISPATCH_INPUT_EVENT"; 3391 case MSG_DISPATCH_APP_VISIBILITY: 3392 return "MSG_DISPATCH_APP_VISIBILITY"; 3393 case MSG_DISPATCH_GET_NEW_SURFACE: 3394 return "MSG_DISPATCH_GET_NEW_SURFACE"; 3395 case MSG_DISPATCH_KEY_FROM_IME: 3396 return "MSG_DISPATCH_KEY_FROM_IME"; 3397 case MSG_CHECK_FOCUS: 3398 return "MSG_CHECK_FOCUS"; 3399 case MSG_CLOSE_SYSTEM_DIALOGS: 3400 return "MSG_CLOSE_SYSTEM_DIALOGS"; 3401 case MSG_DISPATCH_DRAG_EVENT: 3402 return "MSG_DISPATCH_DRAG_EVENT"; 3403 case MSG_DISPATCH_DRAG_LOCATION_EVENT: 3404 return "MSG_DISPATCH_DRAG_LOCATION_EVENT"; 3405 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: 3406 return "MSG_DISPATCH_SYSTEM_UI_VISIBILITY"; 3407 case MSG_UPDATE_CONFIGURATION: 3408 return "MSG_UPDATE_CONFIGURATION"; 3409 case MSG_PROCESS_INPUT_EVENTS: 3410 return "MSG_PROCESS_INPUT_EVENTS"; 3411 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: 3412 return "MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST"; 3413 case MSG_WINDOW_MOVED: 3414 return "MSG_WINDOW_MOVED"; 3415 case MSG_SYNTHESIZE_INPUT_EVENT: 3416 return "MSG_SYNTHESIZE_INPUT_EVENT"; 3417 case MSG_DISPATCH_WINDOW_SHOWN: 3418 return "MSG_DISPATCH_WINDOW_SHOWN"; 3419 case MSG_UPDATE_POINTER_ICON: 3420 return "MSG_UPDATE_POINTER_ICON"; 3421 } 3422 return super.getMessageName(message); 3423 } 3424 3425 @Override 3426 public boolean sendMessageAtTime(Message msg, long uptimeMillis) { 3427 if (msg.what == MSG_REQUEST_KEYBOARD_SHORTCUTS && msg.obj == null) { 3428 // Debugging for b/27963013 3429 throw new NullPointerException( 3430 "Attempted to call MSG_REQUEST_KEYBOARD_SHORTCUTS with null receiver:"); 3431 } 3432 return super.sendMessageAtTime(msg, uptimeMillis); 3433 } 3434 3435 @Override 3436 public void handleMessage(Message msg) { 3437 switch (msg.what) { 3438 case MSG_INVALIDATE: 3439 ((View) msg.obj).invalidate(); 3440 break; 3441 case MSG_INVALIDATE_RECT: 3442 final View.AttachInfo.InvalidateInfo info = (View.AttachInfo.InvalidateInfo) msg.obj; 3443 info.target.invalidate(info.left, info.top, info.right, info.bottom); 3444 info.recycle(); 3445 break; 3446 case MSG_PROCESS_INPUT_EVENTS: 3447 mProcessInputEventsScheduled = false; 3448 doProcessInputEvents(); 3449 break; 3450 case MSG_DISPATCH_APP_VISIBILITY: 3451 handleAppVisibility(msg.arg1 != 0); 3452 break; 3453 case MSG_DISPATCH_GET_NEW_SURFACE: 3454 handleGetNewSurface(); 3455 break; 3456 case MSG_RESIZED: { 3457 // Recycled in the fall through... 3458 SomeArgs args = (SomeArgs) msg.obj; 3459 if (mWinFrame.equals(args.arg1) 3460 && mPendingOverscanInsets.equals(args.arg5) 3461 && mPendingContentInsets.equals(args.arg2) 3462 && mPendingStableInsets.equals(args.arg6) 3463 && mPendingVisibleInsets.equals(args.arg3) 3464 && mPendingOutsets.equals(args.arg7) 3465 && mPendingBackDropFrame.equals(args.arg8) 3466 && args.arg4 == null 3467 && args.argi1 == 0) { 3468 break; 3469 } 3470 } // fall through... 3471 case MSG_RESIZED_REPORT: 3472 if (mAdded) { 3473 SomeArgs args = (SomeArgs) msg.obj; 3474 3475 Configuration config = (Configuration) args.arg4; 3476 if (config != null) { 3477 updateConfiguration(config, false); 3478 } 3479 3480 final boolean framesChanged = !mWinFrame.equals(args.arg1) 3481 || !mPendingOverscanInsets.equals(args.arg5) 3482 || !mPendingContentInsets.equals(args.arg2) 3483 || !mPendingStableInsets.equals(args.arg6) 3484 || !mPendingVisibleInsets.equals(args.arg3) 3485 || !mPendingOutsets.equals(args.arg7); 3486 3487 mWinFrame.set((Rect) args.arg1); 3488 mPendingOverscanInsets.set((Rect) args.arg5); 3489 mPendingContentInsets.set((Rect) args.arg2); 3490 mPendingStableInsets.set((Rect) args.arg6); 3491 mPendingVisibleInsets.set((Rect) args.arg3); 3492 mPendingOutsets.set((Rect) args.arg7); 3493 mPendingBackDropFrame.set((Rect) args.arg8); 3494 mForceNextWindowRelayout = args.argi1 != 0; 3495 mPendingAlwaysConsumeNavBar = args.argi2 != 0; 3496 3497 args.recycle(); 3498 3499 if (msg.what == MSG_RESIZED_REPORT) { 3500 mReportNextDraw = true; 3501 } 3502 3503 if (mView != null && framesChanged) { 3504 forceLayout(mView); 3505 } 3506 3507 requestLayout(); 3508 } 3509 break; 3510 case MSG_WINDOW_MOVED: 3511 if (mAdded) { 3512 final int w = mWinFrame.width(); 3513 final int h = mWinFrame.height(); 3514 final int l = msg.arg1; 3515 final int t = msg.arg2; 3516 mWinFrame.left = l; 3517 mWinFrame.right = l + w; 3518 mWinFrame.top = t; 3519 mWinFrame.bottom = t + h; 3520 3521 mPendingBackDropFrame.set(mWinFrame); 3522 3523 // Suppress layouts during resizing - a correct layout will happen when resizing 3524 // is done, and this just increases system load. 3525 boolean isDockedDivider = mWindowAttributes.type == TYPE_DOCK_DIVIDER; 3526 boolean suppress = (mDragResizing && mResizeMode == RESIZE_MODE_DOCKED_DIVIDER) 3527 || isDockedDivider; 3528 if (!suppress) { 3529 if (mView != null) { 3530 forceLayout(mView); 3531 } 3532 requestLayout(); 3533 } else { 3534 maybeHandleWindowMove(mWinFrame); 3535 } 3536 } 3537 break; 3538 case MSG_WINDOW_FOCUS_CHANGED: { 3539 if (mAdded) { 3540 boolean hasWindowFocus = msg.arg1 != 0; 3541 mAttachInfo.mHasWindowFocus = hasWindowFocus; 3542 3543 profileRendering(hasWindowFocus); 3544 3545 if (hasWindowFocus) { 3546 boolean inTouchMode = msg.arg2 != 0; 3547 ensureTouchModeLocally(inTouchMode); 3548 3549 if (mAttachInfo.mHardwareRenderer != null && mSurface.isValid()){ 3550 mFullRedrawNeeded = true; 3551 try { 3552 final WindowManager.LayoutParams lp = mWindowAttributes; 3553 final Rect surfaceInsets = lp != null ? lp.surfaceInsets : null; 3554 mAttachInfo.mHardwareRenderer.initializeIfNeeded( 3555 mWidth, mHeight, mAttachInfo, mSurface, surfaceInsets); 3556 } catch (OutOfResourcesException e) { 3557 Log.e(mTag, "OutOfResourcesException locking surface", e); 3558 try { 3559 if (!mWindowSession.outOfMemory(mWindow)) { 3560 Slog.w(mTag, "No processes killed for memory; killing self"); 3561 Process.killProcess(Process.myPid()); 3562 } 3563 } catch (RemoteException ex) { 3564 } 3565 // Retry in a bit. 3566 sendMessageDelayed(obtainMessage(msg.what, msg.arg1, msg.arg2), 500); 3567 return; 3568 } 3569 } 3570 } 3571 3572 mLastWasImTarget = WindowManager.LayoutParams 3573 .mayUseInputMethod(mWindowAttributes.flags); 3574 3575 InputMethodManager imm = InputMethodManager.peekInstance(); 3576 if (imm != null && mLastWasImTarget && !isInLocalFocusMode()) { 3577 imm.onPreWindowFocus(mView, hasWindowFocus); 3578 } 3579 if (mView != null) { 3580 mAttachInfo.mKeyDispatchState.reset(); 3581 mView.dispatchWindowFocusChanged(hasWindowFocus); 3582 mAttachInfo.mTreeObserver.dispatchOnWindowFocusChange(hasWindowFocus); 3583 } 3584 3585 // Note: must be done after the focus change callbacks, 3586 // so all of the view state is set up correctly. 3587 if (hasWindowFocus) { 3588 if (imm != null && mLastWasImTarget && !isInLocalFocusMode()) { 3589 imm.onPostWindowFocus(mView, mView.findFocus(), 3590 mWindowAttributes.softInputMode, 3591 !mHasHadWindowFocus, mWindowAttributes.flags); 3592 } 3593 // Clear the forward bit. We can just do this directly, since 3594 // the window manager doesn't care about it. 3595 mWindowAttributes.softInputMode &= 3596 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3597 ((WindowManager.LayoutParams)mView.getLayoutParams()) 3598 .softInputMode &= 3599 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3600 mHasHadWindowFocus = true; 3601 } 3602 } 3603 } break; 3604 case MSG_DIE: 3605 doDie(); 3606 break; 3607 case MSG_DISPATCH_INPUT_EVENT: { 3608 SomeArgs args = (SomeArgs)msg.obj; 3609 InputEvent event = (InputEvent)args.arg1; 3610 InputEventReceiver receiver = (InputEventReceiver)args.arg2; 3611 enqueueInputEvent(event, receiver, 0, true); 3612 args.recycle(); 3613 } break; 3614 case MSG_SYNTHESIZE_INPUT_EVENT: { 3615 InputEvent event = (InputEvent)msg.obj; 3616 enqueueInputEvent(event, null, QueuedInputEvent.FLAG_UNHANDLED, true); 3617 } break; 3618 case MSG_DISPATCH_KEY_FROM_IME: { 3619 if (LOCAL_LOGV) Log.v( 3620 TAG, "Dispatching key " 3621 + msg.obj + " from IME to " + mView); 3622 KeyEvent event = (KeyEvent)msg.obj; 3623 if ((event.getFlags()&KeyEvent.FLAG_FROM_SYSTEM) != 0) { 3624 // The IME is trying to say this event is from the 3625 // system! Bad bad bad! 3626 //noinspection UnusedAssignment 3627 event = KeyEvent.changeFlags(event, event.getFlags() & 3628 ~KeyEvent.FLAG_FROM_SYSTEM); 3629 } 3630 enqueueInputEvent(event, null, QueuedInputEvent.FLAG_DELIVER_POST_IME, true); 3631 } break; 3632 case MSG_CHECK_FOCUS: { 3633 InputMethodManager imm = InputMethodManager.peekInstance(); 3634 if (imm != null) { 3635 imm.checkFocus(); 3636 } 3637 } break; 3638 case MSG_CLOSE_SYSTEM_DIALOGS: { 3639 if (mView != null) { 3640 mView.onCloseSystemDialogs((String)msg.obj); 3641 } 3642 } break; 3643 case MSG_DISPATCH_DRAG_EVENT: 3644 case MSG_DISPATCH_DRAG_LOCATION_EVENT: { 3645 DragEvent event = (DragEvent)msg.obj; 3646 event.mLocalState = mLocalDragState; // only present when this app called startDrag() 3647 handleDragEvent(event); 3648 } break; 3649 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: { 3650 handleDispatchSystemUiVisibilityChanged((SystemUiVisibilityInfo) msg.obj); 3651 } break; 3652 case MSG_UPDATE_CONFIGURATION: { 3653 Configuration config = (Configuration)msg.obj; 3654 if (config.isOtherSeqNewer(mLastConfiguration)) { 3655 config = mLastConfiguration; 3656 } 3657 updateConfiguration(config, false); 3658 } break; 3659 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: { 3660 setAccessibilityFocus(null, null); 3661 } break; 3662 case MSG_INVALIDATE_WORLD: { 3663 if (mView != null) { 3664 invalidateWorld(mView); 3665 } 3666 } break; 3667 case MSG_DISPATCH_WINDOW_SHOWN: { 3668 handleDispatchWindowShown(); 3669 } break; 3670 case MSG_REQUEST_KEYBOARD_SHORTCUTS: { 3671 final IResultReceiver receiver = (IResultReceiver) msg.obj; 3672 final int deviceId = msg.arg1; 3673 handleRequestKeyboardShortcuts(receiver, deviceId); 3674 } break; 3675 case MSG_UPDATE_POINTER_ICON: { 3676 MotionEvent event = (MotionEvent) msg.obj; 3677 resetPointerIcon(event); 3678 } break; 3679 } 3680 } 3681 } 3682 3683 final ViewRootHandler mHandler = new ViewRootHandler(); 3684 3685 /** 3686 * Something in the current window tells us we need to change the touch mode. For 3687 * example, we are not in touch mode, and the user touches the screen. 3688 * 3689 * If the touch mode has changed, tell the window manager, and handle it locally. 3690 * 3691 * @param inTouchMode Whether we want to be in touch mode. 3692 * @return True if the touch mode changed and focus changed was changed as a result 3693 */ 3694 boolean ensureTouchMode(boolean inTouchMode) { 3695 if (DBG) Log.d("touchmode", "ensureTouchMode(" + inTouchMode + "), current " 3696 + "touch mode is " + mAttachInfo.mInTouchMode); 3697 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3698 3699 // tell the window manager 3700 try { 3701 mWindowSession.setInTouchMode(inTouchMode); 3702 } catch (RemoteException e) { 3703 throw new RuntimeException(e); 3704 } 3705 3706 // handle the change 3707 return ensureTouchModeLocally(inTouchMode); 3708 } 3709 3710 /** 3711 * Ensure that the touch mode for this window is set, and if it is changing, 3712 * take the appropriate action. 3713 * @param inTouchMode Whether we want to be in touch mode. 3714 * @return True if the touch mode changed and focus changed was changed as a result 3715 */ 3716 private boolean ensureTouchModeLocally(boolean inTouchMode) { 3717 if (DBG) Log.d("touchmode", "ensureTouchModeLocally(" + inTouchMode + "), current " 3718 + "touch mode is " + mAttachInfo.mInTouchMode); 3719 3720 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3721 3722 mAttachInfo.mInTouchMode = inTouchMode; 3723 mAttachInfo.mTreeObserver.dispatchOnTouchModeChanged(inTouchMode); 3724 3725 return (inTouchMode) ? enterTouchMode() : leaveTouchMode(); 3726 } 3727 3728 private boolean enterTouchMode() { 3729 if (mView != null && mView.hasFocus()) { 3730 // note: not relying on mFocusedView here because this could 3731 // be when the window is first being added, and mFocused isn't 3732 // set yet. 3733 final View focused = mView.findFocus(); 3734 if (focused != null && !focused.isFocusableInTouchMode()) { 3735 final ViewGroup ancestorToTakeFocus = findAncestorToTakeFocusInTouchMode(focused); 3736 if (ancestorToTakeFocus != null) { 3737 // there is an ancestor that wants focus after its 3738 // descendants that is focusable in touch mode.. give it 3739 // focus 3740 return ancestorToTakeFocus.requestFocus(); 3741 } else { 3742 // There's nothing to focus. Clear and propagate through the 3743 // hierarchy, but don't attempt to place new focus. 3744 focused.clearFocusInternal(null, true, false); 3745 return true; 3746 } 3747 } 3748 } 3749 return false; 3750 } 3751 3752 /** 3753 * Find an ancestor of focused that wants focus after its descendants and is 3754 * focusable in touch mode. 3755 * @param focused The currently focused view. 3756 * @return An appropriate view, or null if no such view exists. 3757 */ 3758 private static ViewGroup findAncestorToTakeFocusInTouchMode(View focused) { 3759 ViewParent parent = focused.getParent(); 3760 while (parent instanceof ViewGroup) { 3761 final ViewGroup vgParent = (ViewGroup) parent; 3762 if (vgParent.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 3763 && vgParent.isFocusableInTouchMode()) { 3764 return vgParent; 3765 } 3766 if (vgParent.isRootNamespace()) { 3767 return null; 3768 } else { 3769 parent = vgParent.getParent(); 3770 } 3771 } 3772 return null; 3773 } 3774 3775 private boolean leaveTouchMode() { 3776 if (mView != null) { 3777 if (mView.hasFocus()) { 3778 View focusedView = mView.findFocus(); 3779 if (!(focusedView instanceof ViewGroup)) { 3780 // some view has focus, let it keep it 3781 return false; 3782 } else if (((ViewGroup) focusedView).getDescendantFocusability() != 3783 ViewGroup.FOCUS_AFTER_DESCENDANTS) { 3784 // some view group has focus, and doesn't prefer its children 3785 // over itself for focus, so let them keep it. 3786 return false; 3787 } 3788 } 3789 3790 // find the best view to give focus to in this brave new non-touch-mode 3791 // world 3792 final View focused = focusSearch(null, View.FOCUS_DOWN); 3793 if (focused != null) { 3794 return focused.requestFocus(View.FOCUS_DOWN); 3795 } 3796 } 3797 return false; 3798 } 3799 3800 /** 3801 * Base class for implementing a stage in the chain of responsibility 3802 * for processing input events. 3803 * <p> 3804 * Events are delivered to the stage by the {@link #deliver} method. The stage 3805 * then has the choice of finishing the event or forwarding it to the next stage. 3806 * </p> 3807 */ 3808 abstract class InputStage { 3809 private final InputStage mNext; 3810 3811 protected static final int FORWARD = 0; 3812 protected static final int FINISH_HANDLED = 1; 3813 protected static final int FINISH_NOT_HANDLED = 2; 3814 3815 /** 3816 * Creates an input stage. 3817 * @param next The next stage to which events should be forwarded. 3818 */ 3819 public InputStage(InputStage next) { 3820 mNext = next; 3821 } 3822 3823 /** 3824 * Delivers an event to be processed. 3825 */ 3826 public final void deliver(QueuedInputEvent q) { 3827 if ((q.mFlags & QueuedInputEvent.FLAG_FINISHED) != 0) { 3828 forward(q); 3829 } else if (shouldDropInputEvent(q)) { 3830 finish(q, false); 3831 } else { 3832 apply(q, onProcess(q)); 3833 } 3834 } 3835 3836 /** 3837 * Marks the the input event as finished then forwards it to the next stage. 3838 */ 3839 protected void finish(QueuedInputEvent q, boolean handled) { 3840 q.mFlags |= QueuedInputEvent.FLAG_FINISHED; 3841 if (handled) { 3842 q.mFlags |= QueuedInputEvent.FLAG_FINISHED_HANDLED; 3843 } 3844 forward(q); 3845 } 3846 3847 /** 3848 * Forwards the event to the next stage. 3849 */ 3850 protected void forward(QueuedInputEvent q) { 3851 onDeliverToNext(q); 3852 } 3853 3854 /** 3855 * Applies a result code from {@link #onProcess} to the specified event. 3856 */ 3857 protected void apply(QueuedInputEvent q, int result) { 3858 if (result == FORWARD) { 3859 forward(q); 3860 } else if (result == FINISH_HANDLED) { 3861 finish(q, true); 3862 } else if (result == FINISH_NOT_HANDLED) { 3863 finish(q, false); 3864 } else { 3865 throw new IllegalArgumentException("Invalid result: " + result); 3866 } 3867 } 3868 3869 /** 3870 * Called when an event is ready to be processed. 3871 * @return A result code indicating how the event was handled. 3872 */ 3873 protected int onProcess(QueuedInputEvent q) { 3874 return FORWARD; 3875 } 3876 3877 /** 3878 * Called when an event is being delivered to the next stage. 3879 */ 3880 protected void onDeliverToNext(QueuedInputEvent q) { 3881 if (DEBUG_INPUT_STAGES) { 3882 Log.v(mTag, "Done with " + getClass().getSimpleName() + ". " + q); 3883 } 3884 if (mNext != null) { 3885 mNext.deliver(q); 3886 } else { 3887 finishInputEvent(q); 3888 } 3889 } 3890 3891 protected boolean shouldDropInputEvent(QueuedInputEvent q) { 3892 if (mView == null || !mAdded) { 3893 Slog.w(mTag, "Dropping event due to root view being removed: " + q.mEvent); 3894 return true; 3895 } else if ((!mAttachInfo.mHasWindowFocus 3896 && !q.mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER)) || mStopped 3897 || (mIsAmbientMode && !q.mEvent.isFromSource(InputDevice.SOURCE_CLASS_BUTTON)) 3898 || (mPausedForTransition && !isBack(q.mEvent))) { 3899 // This is a focus event and the window doesn't currently have input focus or 3900 // has stopped. This could be an event that came back from the previous stage 3901 // but the window has lost focus or stopped in the meantime. 3902 if (isTerminalInputEvent(q.mEvent)) { 3903 // Don't drop terminal input events, however mark them as canceled. 3904 q.mEvent.cancel(); 3905 Slog.w(mTag, "Cancelling event due to no window focus: " + q.mEvent); 3906 return false; 3907 } 3908 3909 // Drop non-terminal input events. 3910 Slog.w(mTag, "Dropping event due to no window focus: " + q.mEvent); 3911 return true; 3912 } 3913 return false; 3914 } 3915 3916 void dump(String prefix, PrintWriter writer) { 3917 if (mNext != null) { 3918 mNext.dump(prefix, writer); 3919 } 3920 } 3921 3922 private boolean isBack(InputEvent event) { 3923 if (event instanceof KeyEvent) { 3924 return ((KeyEvent) event).getKeyCode() == KeyEvent.KEYCODE_BACK; 3925 } else { 3926 return false; 3927 } 3928 } 3929 } 3930 3931 /** 3932 * Base class for implementing an input pipeline stage that supports 3933 * asynchronous and out-of-order processing of input events. 3934 * <p> 3935 * In addition to what a normal input stage can do, an asynchronous 3936 * input stage may also defer an input event that has been delivered to it 3937 * and finish or forward it later. 3938 * </p> 3939 */ 3940 abstract class AsyncInputStage extends InputStage { 3941 private final String mTraceCounter; 3942 3943 private QueuedInputEvent mQueueHead; 3944 private QueuedInputEvent mQueueTail; 3945 private int mQueueLength; 3946 3947 protected static final int DEFER = 3; 3948 3949 /** 3950 * Creates an asynchronous input stage. 3951 * @param next The next stage to which events should be forwarded. 3952 * @param traceCounter The name of a counter to record the size of 3953 * the queue of pending events. 3954 */ 3955 public AsyncInputStage(InputStage next, String traceCounter) { 3956 super(next); 3957 mTraceCounter = traceCounter; 3958 } 3959 3960 /** 3961 * Marks the event as deferred, which is to say that it will be handled 3962 * asynchronously. The caller is responsible for calling {@link #forward} 3963 * or {@link #finish} later when it is done handling the event. 3964 */ 3965 protected void defer(QueuedInputEvent q) { 3966 q.mFlags |= QueuedInputEvent.FLAG_DEFERRED; 3967 enqueue(q); 3968 } 3969 3970 @Override 3971 protected void forward(QueuedInputEvent q) { 3972 // Clear the deferred flag. 3973 q.mFlags &= ~QueuedInputEvent.FLAG_DEFERRED; 3974 3975 // Fast path if the queue is empty. 3976 QueuedInputEvent curr = mQueueHead; 3977 if (curr == null) { 3978 super.forward(q); 3979 return; 3980 } 3981 3982 // Determine whether the event must be serialized behind any others 3983 // before it can be delivered to the next stage. This is done because 3984 // deferred events might be handled out of order by the stage. 3985 final int deviceId = q.mEvent.getDeviceId(); 3986 QueuedInputEvent prev = null; 3987 boolean blocked = false; 3988 while (curr != null && curr != q) { 3989 if (!blocked && deviceId == curr.mEvent.getDeviceId()) { 3990 blocked = true; 3991 } 3992 prev = curr; 3993 curr = curr.mNext; 3994 } 3995 3996 // If the event is blocked, then leave it in the queue to be delivered later. 3997 // Note that the event might not yet be in the queue if it was not previously 3998 // deferred so we will enqueue it if needed. 3999 if (blocked) { 4000 if (curr == null) { 4001 enqueue(q); 4002 } 4003 return; 4004 } 4005 4006 // The event is not blocked. Deliver it immediately. 4007 if (curr != null) { 4008 curr = curr.mNext; 4009 dequeue(q, prev); 4010 } 4011 super.forward(q); 4012 4013 // Dequeuing this event may have unblocked successors. Deliver them. 4014 while (curr != null) { 4015 if (deviceId == curr.mEvent.getDeviceId()) { 4016 if ((curr.mFlags & QueuedInputEvent.FLAG_DEFERRED) != 0) { 4017 break; 4018 } 4019 QueuedInputEvent next = curr.mNext; 4020 dequeue(curr, prev); 4021 super.forward(curr); 4022 curr = next; 4023 } else { 4024 prev = curr; 4025 curr = curr.mNext; 4026 } 4027 } 4028 } 4029 4030 @Override 4031 protected void apply(QueuedInputEvent q, int result) { 4032 if (result == DEFER) { 4033 defer(q); 4034 } else { 4035 super.apply(q, result); 4036 } 4037 } 4038 4039 private void enqueue(QueuedInputEvent q) { 4040 if (mQueueTail == null) { 4041 mQueueHead = q; 4042 mQueueTail = q; 4043 } else { 4044 mQueueTail.mNext = q; 4045 mQueueTail = q; 4046 } 4047 4048 mQueueLength += 1; 4049 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 4050 } 4051 4052 private void dequeue(QueuedInputEvent q, QueuedInputEvent prev) { 4053 if (prev == null) { 4054 mQueueHead = q.mNext; 4055 } else { 4056 prev.mNext = q.mNext; 4057 } 4058 if (mQueueTail == q) { 4059 mQueueTail = prev; 4060 } 4061 q.mNext = null; 4062 4063 mQueueLength -= 1; 4064 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 4065 } 4066 4067 @Override 4068 void dump(String prefix, PrintWriter writer) { 4069 writer.print(prefix); 4070 writer.print(getClass().getName()); 4071 writer.print(": mQueueLength="); 4072 writer.println(mQueueLength); 4073 4074 super.dump(prefix, writer); 4075 } 4076 } 4077 4078 /** 4079 * Delivers pre-ime input events to a native activity. 4080 * Does not support pointer events. 4081 */ 4082 final class NativePreImeInputStage extends AsyncInputStage 4083 implements InputQueue.FinishedInputEventCallback { 4084 public NativePreImeInputStage(InputStage next, String traceCounter) { 4085 super(next, traceCounter); 4086 } 4087 4088 @Override 4089 protected int onProcess(QueuedInputEvent q) { 4090 if (mInputQueue != null && q.mEvent instanceof KeyEvent) { 4091 mInputQueue.sendInputEvent(q.mEvent, q, true, this); 4092 return DEFER; 4093 } 4094 return FORWARD; 4095 } 4096 4097 @Override 4098 public void onFinishedInputEvent(Object token, boolean handled) { 4099 QueuedInputEvent q = (QueuedInputEvent)token; 4100 if (handled) { 4101 finish(q, true); 4102 return; 4103 } 4104 forward(q); 4105 } 4106 } 4107 4108 /** 4109 * Delivers pre-ime input events to the view hierarchy. 4110 * Does not support pointer events. 4111 */ 4112 final class ViewPreImeInputStage extends InputStage { 4113 public ViewPreImeInputStage(InputStage next) { 4114 super(next); 4115 } 4116 4117 @Override 4118 protected int onProcess(QueuedInputEvent q) { 4119 if (q.mEvent instanceof KeyEvent) { 4120 return processKeyEvent(q); 4121 } 4122 return FORWARD; 4123 } 4124 4125 private int processKeyEvent(QueuedInputEvent q) { 4126 final KeyEvent event = (KeyEvent)q.mEvent; 4127 if (mView.dispatchKeyEventPreIme(event)) { 4128 return FINISH_HANDLED; 4129 } 4130 return FORWARD; 4131 } 4132 } 4133 4134 /** 4135 * Delivers input events to the ime. 4136 * Does not support pointer events. 4137 */ 4138 final class ImeInputStage extends AsyncInputStage 4139 implements InputMethodManager.FinishedInputEventCallback { 4140 public ImeInputStage(InputStage next, String traceCounter) { 4141 super(next, traceCounter); 4142 } 4143 4144 @Override 4145 protected int onProcess(QueuedInputEvent q) { 4146 if (mLastWasImTarget && !isInLocalFocusMode()) { 4147 InputMethodManager imm = InputMethodManager.peekInstance(); 4148 if (imm != null) { 4149 final InputEvent event = q.mEvent; 4150 if (DEBUG_IMF) Log.v(mTag, "Sending input event to IME: " + event); 4151 int result = imm.dispatchInputEvent(event, q, this, mHandler); 4152 if (result == InputMethodManager.DISPATCH_HANDLED) { 4153 return FINISH_HANDLED; 4154 } else if (result == InputMethodManager.DISPATCH_NOT_HANDLED) { 4155 // The IME could not handle it, so skip along to the next InputStage 4156 return FORWARD; 4157 } else { 4158 return DEFER; // callback will be invoked later 4159 } 4160 } 4161 } 4162 return FORWARD; 4163 } 4164 4165 @Override 4166 public void onFinishedInputEvent(Object token, boolean handled) { 4167 QueuedInputEvent q = (QueuedInputEvent)token; 4168 if (handled) { 4169 finish(q, true); 4170 return; 4171 } 4172 forward(q); 4173 } 4174 } 4175 4176 /** 4177 * Performs early processing of post-ime input events. 4178 */ 4179 final class EarlyPostImeInputStage extends InputStage { 4180 public EarlyPostImeInputStage(InputStage next) { 4181 super(next); 4182 } 4183 4184 @Override 4185 protected int onProcess(QueuedInputEvent q) { 4186 if (q.mEvent instanceof KeyEvent) { 4187 return processKeyEvent(q); 4188 } else { 4189 final int source = q.mEvent.getSource(); 4190 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 4191 return processPointerEvent(q); 4192 } 4193 } 4194 return FORWARD; 4195 } 4196 4197 private int processKeyEvent(QueuedInputEvent q) { 4198 final KeyEvent event = (KeyEvent)q.mEvent; 4199 4200 // If the key's purpose is to exit touch mode then we consume it 4201 // and consider it handled. 4202 if (checkForLeavingTouchModeAndConsume(event)) { 4203 return FINISH_HANDLED; 4204 } 4205 4206 // Make sure the fallback event policy sees all keys that will be 4207 // delivered to the view hierarchy. 4208 mFallbackEventHandler.preDispatchKeyEvent(event); 4209 return FORWARD; 4210 } 4211 4212 private int processPointerEvent(QueuedInputEvent q) { 4213 final MotionEvent event = (MotionEvent)q.mEvent; 4214 4215 // Translate the pointer event for compatibility, if needed. 4216 if (mTranslator != null) { 4217 mTranslator.translateEventInScreenToAppWindow(event); 4218 } 4219 4220 // Enter touch mode on down or scroll. 4221 final int action = event.getAction(); 4222 if (action == MotionEvent.ACTION_DOWN || action == MotionEvent.ACTION_SCROLL) { 4223 ensureTouchMode(true); 4224 } 4225 4226 // Offset the scroll position. 4227 if (mCurScrollY != 0) { 4228 event.offsetLocation(0, mCurScrollY); 4229 } 4230 4231 // Remember the touch position for possible drag-initiation. 4232 if (event.isTouchEvent()) { 4233 mLastTouchPoint.x = event.getRawX(); 4234 mLastTouchPoint.y = event.getRawY(); 4235 mLastTouchSource = event.getSource(); 4236 } 4237 return FORWARD; 4238 } 4239 } 4240 4241 /** 4242 * Delivers post-ime input events to a native activity. 4243 */ 4244 final class NativePostImeInputStage extends AsyncInputStage 4245 implements InputQueue.FinishedInputEventCallback { 4246 public NativePostImeInputStage(InputStage next, String traceCounter) { 4247 super(next, traceCounter); 4248 } 4249 4250 @Override 4251 protected int onProcess(QueuedInputEvent q) { 4252 if (mInputQueue != null) { 4253 mInputQueue.sendInputEvent(q.mEvent, q, false, this); 4254 return DEFER; 4255 } 4256 return FORWARD; 4257 } 4258 4259 @Override 4260 public void onFinishedInputEvent(Object token, boolean handled) { 4261 QueuedInputEvent q = (QueuedInputEvent)token; 4262 if (handled) { 4263 finish(q, true); 4264 return; 4265 } 4266 forward(q); 4267 } 4268 } 4269 4270 /** 4271 * Delivers post-ime input events to the view hierarchy. 4272 */ 4273 final class ViewPostImeInputStage extends InputStage { 4274 public ViewPostImeInputStage(InputStage next) { 4275 super(next); 4276 } 4277 4278 @Override 4279 protected int onProcess(QueuedInputEvent q) { 4280 if (q.mEvent instanceof KeyEvent) { 4281 return processKeyEvent(q); 4282 } else { 4283 final int source = q.mEvent.getSource(); 4284 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 4285 return processPointerEvent(q); 4286 } else if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 4287 return processTrackballEvent(q); 4288 } else { 4289 return processGenericMotionEvent(q); 4290 } 4291 } 4292 } 4293 4294 @Override 4295 protected void onDeliverToNext(QueuedInputEvent q) { 4296 if (mUnbufferedInputDispatch 4297 && q.mEvent instanceof MotionEvent 4298 && ((MotionEvent)q.mEvent).isTouchEvent() 4299 && isTerminalInputEvent(q.mEvent)) { 4300 mUnbufferedInputDispatch = false; 4301 scheduleConsumeBatchedInput(); 4302 } 4303 super.onDeliverToNext(q); 4304 } 4305 4306 private int processKeyEvent(QueuedInputEvent q) { 4307 final KeyEvent event = (KeyEvent)q.mEvent; 4308 4309 // Deliver the key to the view hierarchy. 4310 if (mView.dispatchKeyEvent(event)) { 4311 return FINISH_HANDLED; 4312 } 4313 4314 if (shouldDropInputEvent(q)) { 4315 return FINISH_NOT_HANDLED; 4316 } 4317 4318 // If the Control modifier is held, try to interpret the key as a shortcut. 4319 if (event.getAction() == KeyEvent.ACTION_DOWN 4320 && event.isCtrlPressed() 4321 && event.getRepeatCount() == 0 4322 && !KeyEvent.isModifierKey(event.getKeyCode())) { 4323 if (mView.dispatchKeyShortcutEvent(event)) { 4324 return FINISH_HANDLED; 4325 } 4326 if (shouldDropInputEvent(q)) { 4327 return FINISH_NOT_HANDLED; 4328 } 4329 } 4330 4331 // Apply the fallback event policy. 4332 if (mFallbackEventHandler.dispatchKeyEvent(event)) { 4333 return FINISH_HANDLED; 4334 } 4335 if (shouldDropInputEvent(q)) { 4336 return FINISH_NOT_HANDLED; 4337 } 4338 4339 // Handle automatic focus changes. 4340 if (event.getAction() == KeyEvent.ACTION_DOWN) { 4341 int direction = 0; 4342 switch (event.getKeyCode()) { 4343 case KeyEvent.KEYCODE_DPAD_LEFT: 4344 if (event.hasNoModifiers()) { 4345 direction = View.FOCUS_LEFT; 4346 } 4347 break; 4348 case KeyEvent.KEYCODE_DPAD_RIGHT: 4349 if (event.hasNoModifiers()) { 4350 direction = View.FOCUS_RIGHT; 4351 } 4352 break; 4353 case KeyEvent.KEYCODE_DPAD_UP: 4354 if (event.hasNoModifiers()) { 4355 direction = View.FOCUS_UP; 4356 } 4357 break; 4358 case KeyEvent.KEYCODE_DPAD_DOWN: 4359 if (event.hasNoModifiers()) { 4360 direction = View.FOCUS_DOWN; 4361 } 4362 break; 4363 case KeyEvent.KEYCODE_TAB: 4364 if (event.hasNoModifiers()) { 4365 direction = View.FOCUS_FORWARD; 4366 } else if (event.hasModifiers(KeyEvent.META_SHIFT_ON)) { 4367 direction = View.FOCUS_BACKWARD; 4368 } 4369 break; 4370 } 4371 if (direction != 0) { 4372 View focused = mView.findFocus(); 4373 if (focused != null) { 4374 View v = focused.focusSearch(direction); 4375 if (v != null && v != focused) { 4376 // do the math the get the interesting rect 4377 // of previous focused into the coord system of 4378 // newly focused view 4379 focused.getFocusedRect(mTempRect); 4380 if (mView instanceof ViewGroup) { 4381 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 4382 focused, mTempRect); 4383 ((ViewGroup) mView).offsetRectIntoDescendantCoords( 4384 v, mTempRect); 4385 } 4386 if (v.requestFocus(direction, mTempRect)) { 4387 playSoundEffect(SoundEffectConstants 4388 .getContantForFocusDirection(direction)); 4389 return FINISH_HANDLED; 4390 } 4391 } 4392 4393 // Give the focused view a last chance to handle the dpad key. 4394 if (mView.dispatchUnhandledMove(focused, direction)) { 4395 return FINISH_HANDLED; 4396 } 4397 } else { 4398 // find the best view to give focus to in this non-touch-mode with no-focus 4399 View v = focusSearch(null, direction); 4400 if (v != null && v.requestFocus(direction)) { 4401 return FINISH_HANDLED; 4402 } 4403 } 4404 } 4405 } 4406 return FORWARD; 4407 } 4408 4409 private int processPointerEvent(QueuedInputEvent q) { 4410 final MotionEvent event = (MotionEvent)q.mEvent; 4411 4412 mAttachInfo.mUnbufferedDispatchRequested = false; 4413 final View eventTarget = 4414 (event.isFromSource(InputDevice.SOURCE_MOUSE) && mCapturingView != null) ? 4415 mCapturingView : mView; 4416 mAttachInfo.mHandlingPointerEvent = true; 4417 boolean handled = eventTarget.dispatchPointerEvent(event); 4418 maybeUpdatePointerIcon(event); 4419 mAttachInfo.mHandlingPointerEvent = false; 4420 if (mAttachInfo.mUnbufferedDispatchRequested && !mUnbufferedInputDispatch) { 4421 mUnbufferedInputDispatch = true; 4422 if (mConsumeBatchedInputScheduled) { 4423 scheduleConsumeBatchedInputImmediately(); 4424 } 4425 } 4426 return handled ? FINISH_HANDLED : FORWARD; 4427 } 4428 4429 private void maybeUpdatePointerIcon(MotionEvent event) { 4430 if (event.getPointerCount() == 1 && event.isFromSource(InputDevice.SOURCE_MOUSE)) { 4431 if (event.getActionMasked() == MotionEvent.ACTION_HOVER_ENTER 4432 || event.getActionMasked() == MotionEvent.ACTION_HOVER_EXIT) { 4433 // Other apps or the window manager may change the icon type outside of 4434 // this app, therefore the icon type has to be reset on enter/exit event. 4435 mPointerIconType = PointerIcon.TYPE_NOT_SPECIFIED; 4436 } 4437 4438 if (event.getActionMasked() != MotionEvent.ACTION_HOVER_EXIT) { 4439 if (!updatePointerIcon(event) && 4440 event.getActionMasked() == MotionEvent.ACTION_HOVER_MOVE) { 4441 mPointerIconType = PointerIcon.TYPE_NOT_SPECIFIED; 4442 } 4443 } 4444 } 4445 } 4446 4447 private int processTrackballEvent(QueuedInputEvent q) { 4448 final MotionEvent event = (MotionEvent)q.mEvent; 4449 4450 if (mView.dispatchTrackballEvent(event)) { 4451 return FINISH_HANDLED; 4452 } 4453 return FORWARD; 4454 } 4455 4456 private int processGenericMotionEvent(QueuedInputEvent q) { 4457 final MotionEvent event = (MotionEvent)q.mEvent; 4458 4459 // Deliver the event to the view. 4460 if (mView.dispatchGenericMotionEvent(event)) { 4461 return FINISH_HANDLED; 4462 } 4463 return FORWARD; 4464 } 4465 } 4466 4467 private void resetPointerIcon(MotionEvent event) { 4468 mPointerIconType = PointerIcon.TYPE_NOT_SPECIFIED; 4469 updatePointerIcon(event); 4470 } 4471 4472 private boolean updatePointerIcon(MotionEvent event) { 4473 final int pointerIndex = 0; 4474 final float x = event.getX(pointerIndex); 4475 final float y = event.getY(pointerIndex); 4476 if (mView == null) { 4477 // E.g. click outside a popup to dismiss it 4478 Slog.d(mTag, "updatePointerIcon called after view was removed"); 4479 return false; 4480 } 4481 if (x < 0 || x >= mView.getWidth() || y < 0 || y >= mView.getHeight()) { 4482 // E.g. when moving window divider with mouse 4483 Slog.d(mTag, "updatePointerIcon called with position out of bounds"); 4484 return false; 4485 } 4486 final PointerIcon pointerIcon = mView.onResolvePointerIcon(event, pointerIndex); 4487 final int pointerType = (pointerIcon != null) ? 4488 pointerIcon.getType() : PointerIcon.TYPE_DEFAULT; 4489 4490 if (mPointerIconType != pointerType) { 4491 mPointerIconType = pointerType; 4492 if (mPointerIconType != PointerIcon.TYPE_CUSTOM) { 4493 mCustomPointerIcon = null; 4494 InputManager.getInstance().setPointerIconType(pointerType); 4495 return true; 4496 } 4497 } 4498 if (mPointerIconType == PointerIcon.TYPE_CUSTOM && 4499 !pointerIcon.equals(mCustomPointerIcon)) { 4500 mCustomPointerIcon = pointerIcon; 4501 InputManager.getInstance().setCustomPointerIcon(mCustomPointerIcon); 4502 } 4503 return true; 4504 } 4505 4506 /** 4507 * Performs synthesis of new input events from unhandled input events. 4508 */ 4509 final class SyntheticInputStage extends InputStage { 4510 private final SyntheticTrackballHandler mTrackball = new SyntheticTrackballHandler(); 4511 private final SyntheticJoystickHandler mJoystick = new SyntheticJoystickHandler(); 4512 private final SyntheticTouchNavigationHandler mTouchNavigation = 4513 new SyntheticTouchNavigationHandler(); 4514 private final SyntheticKeyboardHandler mKeyboard = new SyntheticKeyboardHandler(); 4515 4516 public SyntheticInputStage() { 4517 super(null); 4518 } 4519 4520 @Override 4521 protected int onProcess(QueuedInputEvent q) { 4522 q.mFlags |= QueuedInputEvent.FLAG_RESYNTHESIZED; 4523 if (q.mEvent instanceof MotionEvent) { 4524 final MotionEvent event = (MotionEvent)q.mEvent; 4525 final int source = event.getSource(); 4526 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 4527 mTrackball.process(event); 4528 return FINISH_HANDLED; 4529 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 4530 mJoystick.process(event); 4531 return FINISH_HANDLED; 4532 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 4533 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 4534 mTouchNavigation.process(event); 4535 return FINISH_HANDLED; 4536 } 4537 } else if ((q.mFlags & QueuedInputEvent.FLAG_UNHANDLED) != 0) { 4538 mKeyboard.process((KeyEvent)q.mEvent); 4539 return FINISH_HANDLED; 4540 } 4541 4542 return FORWARD; 4543 } 4544 4545 @Override 4546 protected void onDeliverToNext(QueuedInputEvent q) { 4547 if ((q.mFlags & QueuedInputEvent.FLAG_RESYNTHESIZED) == 0) { 4548 // Cancel related synthetic events if any prior stage has handled the event. 4549 if (q.mEvent instanceof MotionEvent) { 4550 final MotionEvent event = (MotionEvent)q.mEvent; 4551 final int source = event.getSource(); 4552 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 4553 mTrackball.cancel(event); 4554 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 4555 mJoystick.cancel(event); 4556 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 4557 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 4558 mTouchNavigation.cancel(event); 4559 } 4560 } 4561 } 4562 super.onDeliverToNext(q); 4563 } 4564 } 4565 4566 /** 4567 * Creates dpad events from unhandled trackball movements. 4568 */ 4569 final class SyntheticTrackballHandler { 4570 private final TrackballAxis mX = new TrackballAxis(); 4571 private final TrackballAxis mY = new TrackballAxis(); 4572 private long mLastTime; 4573 4574 public void process(MotionEvent event) { 4575 // Translate the trackball event into DPAD keys and try to deliver those. 4576 long curTime = SystemClock.uptimeMillis(); 4577 if ((mLastTime + MAX_TRACKBALL_DELAY) < curTime) { 4578 // It has been too long since the last movement, 4579 // so restart at the beginning. 4580 mX.reset(0); 4581 mY.reset(0); 4582 mLastTime = curTime; 4583 } 4584 4585 final int action = event.getAction(); 4586 final int metaState = event.getMetaState(); 4587 switch (action) { 4588 case MotionEvent.ACTION_DOWN: 4589 mX.reset(2); 4590 mY.reset(2); 4591 enqueueInputEvent(new KeyEvent(curTime, curTime, 4592 KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 4593 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4594 InputDevice.SOURCE_KEYBOARD)); 4595 break; 4596 case MotionEvent.ACTION_UP: 4597 mX.reset(2); 4598 mY.reset(2); 4599 enqueueInputEvent(new KeyEvent(curTime, curTime, 4600 KeyEvent.ACTION_UP, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 4601 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4602 InputDevice.SOURCE_KEYBOARD)); 4603 break; 4604 } 4605 4606 if (DEBUG_TRACKBALL) Log.v(mTag, "TB X=" + mX.position + " step=" 4607 + mX.step + " dir=" + mX.dir + " acc=" + mX.acceleration 4608 + " move=" + event.getX() 4609 + " / Y=" + mY.position + " step=" 4610 + mY.step + " dir=" + mY.dir + " acc=" + mY.acceleration 4611 + " move=" + event.getY()); 4612 final float xOff = mX.collect(event.getX(), event.getEventTime(), "X"); 4613 final float yOff = mY.collect(event.getY(), event.getEventTime(), "Y"); 4614 4615 // Generate DPAD events based on the trackball movement. 4616 // We pick the axis that has moved the most as the direction of 4617 // the DPAD. When we generate DPAD events for one axis, then the 4618 // other axis is reset -- we don't want to perform DPAD jumps due 4619 // to slight movements in the trackball when making major movements 4620 // along the other axis. 4621 int keycode = 0; 4622 int movement = 0; 4623 float accel = 1; 4624 if (xOff > yOff) { 4625 movement = mX.generate(); 4626 if (movement != 0) { 4627 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_RIGHT 4628 : KeyEvent.KEYCODE_DPAD_LEFT; 4629 accel = mX.acceleration; 4630 mY.reset(2); 4631 } 4632 } else if (yOff > 0) { 4633 movement = mY.generate(); 4634 if (movement != 0) { 4635 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_DOWN 4636 : KeyEvent.KEYCODE_DPAD_UP; 4637 accel = mY.acceleration; 4638 mX.reset(2); 4639 } 4640 } 4641 4642 if (keycode != 0) { 4643 if (movement < 0) movement = -movement; 4644 int accelMovement = (int)(movement * accel); 4645 if (DEBUG_TRACKBALL) Log.v(mTag, "Move: movement=" + movement 4646 + " accelMovement=" + accelMovement 4647 + " accel=" + accel); 4648 if (accelMovement > movement) { 4649 if (DEBUG_TRACKBALL) Log.v(mTag, "Delivering fake DPAD: " 4650 + keycode); 4651 movement--; 4652 int repeatCount = accelMovement - movement; 4653 enqueueInputEvent(new KeyEvent(curTime, curTime, 4654 KeyEvent.ACTION_MULTIPLE, keycode, repeatCount, metaState, 4655 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4656 InputDevice.SOURCE_KEYBOARD)); 4657 } 4658 while (movement > 0) { 4659 if (DEBUG_TRACKBALL) Log.v(mTag, "Delivering fake DPAD: " 4660 + keycode); 4661 movement--; 4662 curTime = SystemClock.uptimeMillis(); 4663 enqueueInputEvent(new KeyEvent(curTime, curTime, 4664 KeyEvent.ACTION_DOWN, keycode, 0, metaState, 4665 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4666 InputDevice.SOURCE_KEYBOARD)); 4667 enqueueInputEvent(new KeyEvent(curTime, curTime, 4668 KeyEvent.ACTION_UP, keycode, 0, metaState, 4669 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4670 InputDevice.SOURCE_KEYBOARD)); 4671 } 4672 mLastTime = curTime; 4673 } 4674 } 4675 4676 public void cancel(MotionEvent event) { 4677 mLastTime = Integer.MIN_VALUE; 4678 4679 // If we reach this, we consumed a trackball event. 4680 // Because we will not translate the trackball event into a key event, 4681 // touch mode will not exit, so we exit touch mode here. 4682 if (mView != null && mAdded) { 4683 ensureTouchMode(false); 4684 } 4685 } 4686 } 4687 4688 /** 4689 * Maintains state information for a single trackball axis, generating 4690 * discrete (DPAD) movements based on raw trackball motion. 4691 */ 4692 static final class TrackballAxis { 4693 /** 4694 * The maximum amount of acceleration we will apply. 4695 */ 4696 static final float MAX_ACCELERATION = 20; 4697 4698 /** 4699 * The maximum amount of time (in milliseconds) between events in order 4700 * for us to consider the user to be doing fast trackball movements, 4701 * and thus apply an acceleration. 4702 */ 4703 static final long FAST_MOVE_TIME = 150; 4704 4705 /** 4706 * Scaling factor to the time (in milliseconds) between events to how 4707 * much to multiple/divide the current acceleration. When movement 4708 * is < FAST_MOVE_TIME this multiplies the acceleration; when > 4709 * FAST_MOVE_TIME it divides it. 4710 */ 4711 static final float ACCEL_MOVE_SCALING_FACTOR = (1.0f/40); 4712 4713 static final float FIRST_MOVEMENT_THRESHOLD = 0.5f; 4714 static final float SECOND_CUMULATIVE_MOVEMENT_THRESHOLD = 2.0f; 4715 static final float SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD = 1.0f; 4716 4717 float position; 4718 float acceleration = 1; 4719 long lastMoveTime = 0; 4720 int step; 4721 int dir; 4722 int nonAccelMovement; 4723 4724 void reset(int _step) { 4725 position = 0; 4726 acceleration = 1; 4727 lastMoveTime = 0; 4728 step = _step; 4729 dir = 0; 4730 } 4731 4732 /** 4733 * Add trackball movement into the state. If the direction of movement 4734 * has been reversed, the state is reset before adding the 4735 * movement (so that you don't have to compensate for any previously 4736 * collected movement before see the result of the movement in the 4737 * new direction). 4738 * 4739 * @return Returns the absolute value of the amount of movement 4740 * collected so far. 4741 */ 4742 float collect(float off, long time, String axis) { 4743 long normTime; 4744 if (off > 0) { 4745 normTime = (long)(off * FAST_MOVE_TIME); 4746 if (dir < 0) { 4747 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to positive!"); 4748 position = 0; 4749 step = 0; 4750 acceleration = 1; 4751 lastMoveTime = 0; 4752 } 4753 dir = 1; 4754 } else if (off < 0) { 4755 normTime = (long)((-off) * FAST_MOVE_TIME); 4756 if (dir > 0) { 4757 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to negative!"); 4758 position = 0; 4759 step = 0; 4760 acceleration = 1; 4761 lastMoveTime = 0; 4762 } 4763 dir = -1; 4764 } else { 4765 normTime = 0; 4766 } 4767 4768 // The number of milliseconds between each movement that is 4769 // considered "normal" and will not result in any acceleration 4770 // or deceleration, scaled by the offset we have here. 4771 if (normTime > 0) { 4772 long delta = time - lastMoveTime; 4773 lastMoveTime = time; 4774 float acc = acceleration; 4775 if (delta < normTime) { 4776 // The user is scrolling rapidly, so increase acceleration. 4777 float scale = (normTime-delta) * ACCEL_MOVE_SCALING_FACTOR; 4778 if (scale > 1) acc *= scale; 4779 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " accelerate: off=" 4780 + off + " normTime=" + normTime + " delta=" + delta 4781 + " scale=" + scale + " acc=" + acc); 4782 acceleration = acc < MAX_ACCELERATION ? acc : MAX_ACCELERATION; 4783 } else { 4784 // The user is scrolling slowly, so decrease acceleration. 4785 float scale = (delta-normTime) * ACCEL_MOVE_SCALING_FACTOR; 4786 if (scale > 1) acc /= scale; 4787 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " deccelerate: off=" 4788 + off + " normTime=" + normTime + " delta=" + delta 4789 + " scale=" + scale + " acc=" + acc); 4790 acceleration = acc > 1 ? acc : 1; 4791 } 4792 } 4793 position += off; 4794 return Math.abs(position); 4795 } 4796 4797 /** 4798 * Generate the number of discrete movement events appropriate for 4799 * the currently collected trackball movement. 4800 * 4801 * @return Returns the number of discrete movements, either positive 4802 * or negative, or 0 if there is not enough trackball movement yet 4803 * for a discrete movement. 4804 */ 4805 int generate() { 4806 int movement = 0; 4807 nonAccelMovement = 0; 4808 do { 4809 final int dir = position >= 0 ? 1 : -1; 4810 switch (step) { 4811 // If we are going to execute the first step, then we want 4812 // to do this as soon as possible instead of waiting for 4813 // a full movement, in order to make things look responsive. 4814 case 0: 4815 if (Math.abs(position) < FIRST_MOVEMENT_THRESHOLD) { 4816 return movement; 4817 } 4818 movement += dir; 4819 nonAccelMovement += dir; 4820 step = 1; 4821 break; 4822 // If we have generated the first movement, then we need 4823 // to wait for the second complete trackball motion before 4824 // generating the second discrete movement. 4825 case 1: 4826 if (Math.abs(position) < SECOND_CUMULATIVE_MOVEMENT_THRESHOLD) { 4827 return movement; 4828 } 4829 movement += dir; 4830 nonAccelMovement += dir; 4831 position -= SECOND_CUMULATIVE_MOVEMENT_THRESHOLD * dir; 4832 step = 2; 4833 break; 4834 // After the first two, we generate discrete movements 4835 // consistently with the trackball, applying an acceleration 4836 // if the trackball is moving quickly. This is a simple 4837 // acceleration on top of what we already compute based 4838 // on how quickly the wheel is being turned, to apply 4839 // a longer increasing acceleration to continuous movement 4840 // in one direction. 4841 default: 4842 if (Math.abs(position) < SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD) { 4843 return movement; 4844 } 4845 movement += dir; 4846 position -= dir * SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD; 4847 float acc = acceleration; 4848 acc *= 1.1f; 4849 acceleration = acc < MAX_ACCELERATION ? acc : acceleration; 4850 break; 4851 } 4852 } while (true); 4853 } 4854 } 4855 4856 /** 4857 * Creates dpad events from unhandled joystick movements. 4858 */ 4859 final class SyntheticJoystickHandler extends Handler { 4860 private final static String TAG = "SyntheticJoystickHandler"; 4861 private final static int MSG_ENQUEUE_X_AXIS_KEY_REPEAT = 1; 4862 private final static int MSG_ENQUEUE_Y_AXIS_KEY_REPEAT = 2; 4863 4864 private int mLastXDirection; 4865 private int mLastYDirection; 4866 private int mLastXKeyCode; 4867 private int mLastYKeyCode; 4868 4869 public SyntheticJoystickHandler() { 4870 super(true); 4871 } 4872 4873 @Override 4874 public void handleMessage(Message msg) { 4875 switch (msg.what) { 4876 case MSG_ENQUEUE_X_AXIS_KEY_REPEAT: 4877 case MSG_ENQUEUE_Y_AXIS_KEY_REPEAT: { 4878 KeyEvent oldEvent = (KeyEvent)msg.obj; 4879 KeyEvent e = KeyEvent.changeTimeRepeat(oldEvent, 4880 SystemClock.uptimeMillis(), 4881 oldEvent.getRepeatCount() + 1); 4882 if (mAttachInfo.mHasWindowFocus) { 4883 enqueueInputEvent(e); 4884 Message m = obtainMessage(msg.what, e); 4885 m.setAsynchronous(true); 4886 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatDelay()); 4887 } 4888 } break; 4889 } 4890 } 4891 4892 public void process(MotionEvent event) { 4893 switch(event.getActionMasked()) { 4894 case MotionEvent.ACTION_CANCEL: 4895 cancel(event); 4896 break; 4897 case MotionEvent.ACTION_MOVE: 4898 update(event, true); 4899 break; 4900 default: 4901 Log.w(mTag, "Unexpected action: " + event.getActionMasked()); 4902 } 4903 } 4904 4905 private void cancel(MotionEvent event) { 4906 removeMessages(MSG_ENQUEUE_X_AXIS_KEY_REPEAT); 4907 removeMessages(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT); 4908 update(event, false); 4909 } 4910 4911 private void update(MotionEvent event, boolean synthesizeNewKeys) { 4912 final long time = event.getEventTime(); 4913 final int metaState = event.getMetaState(); 4914 final int deviceId = event.getDeviceId(); 4915 final int source = event.getSource(); 4916 4917 int xDirection = joystickAxisValueToDirection( 4918 event.getAxisValue(MotionEvent.AXIS_HAT_X)); 4919 if (xDirection == 0) { 4920 xDirection = joystickAxisValueToDirection(event.getX()); 4921 } 4922 4923 int yDirection = joystickAxisValueToDirection( 4924 event.getAxisValue(MotionEvent.AXIS_HAT_Y)); 4925 if (yDirection == 0) { 4926 yDirection = joystickAxisValueToDirection(event.getY()); 4927 } 4928 4929 if (xDirection != mLastXDirection) { 4930 if (mLastXKeyCode != 0) { 4931 removeMessages(MSG_ENQUEUE_X_AXIS_KEY_REPEAT); 4932 enqueueInputEvent(new KeyEvent(time, time, 4933 KeyEvent.ACTION_UP, mLastXKeyCode, 0, metaState, 4934 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4935 mLastXKeyCode = 0; 4936 } 4937 4938 mLastXDirection = xDirection; 4939 4940 if (xDirection != 0 && synthesizeNewKeys) { 4941 mLastXKeyCode = xDirection > 0 4942 ? KeyEvent.KEYCODE_DPAD_RIGHT : KeyEvent.KEYCODE_DPAD_LEFT; 4943 final KeyEvent e = new KeyEvent(time, time, 4944 KeyEvent.ACTION_DOWN, mLastXKeyCode, 0, metaState, 4945 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4946 enqueueInputEvent(e); 4947 Message m = obtainMessage(MSG_ENQUEUE_X_AXIS_KEY_REPEAT, e); 4948 m.setAsynchronous(true); 4949 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4950 } 4951 } 4952 4953 if (yDirection != mLastYDirection) { 4954 if (mLastYKeyCode != 0) { 4955 removeMessages(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT); 4956 enqueueInputEvent(new KeyEvent(time, time, 4957 KeyEvent.ACTION_UP, mLastYKeyCode, 0, metaState, 4958 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4959 mLastYKeyCode = 0; 4960 } 4961 4962 mLastYDirection = yDirection; 4963 4964 if (yDirection != 0 && synthesizeNewKeys) { 4965 mLastYKeyCode = yDirection > 0 4966 ? KeyEvent.KEYCODE_DPAD_DOWN : KeyEvent.KEYCODE_DPAD_UP; 4967 final KeyEvent e = new KeyEvent(time, time, 4968 KeyEvent.ACTION_DOWN, mLastYKeyCode, 0, metaState, 4969 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4970 enqueueInputEvent(e); 4971 Message m = obtainMessage(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT, e); 4972 m.setAsynchronous(true); 4973 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4974 } 4975 } 4976 } 4977 4978 private int joystickAxisValueToDirection(float value) { 4979 if (value >= 0.5f) { 4980 return 1; 4981 } else if (value <= -0.5f) { 4982 return -1; 4983 } else { 4984 return 0; 4985 } 4986 } 4987 } 4988 4989 /** 4990 * Creates dpad events from unhandled touch navigation movements. 4991 */ 4992 final class SyntheticTouchNavigationHandler extends Handler { 4993 private static final String LOCAL_TAG = "SyntheticTouchNavigationHandler"; 4994 private static final boolean LOCAL_DEBUG = false; 4995 4996 // Assumed nominal width and height in millimeters of a touch navigation pad, 4997 // if no resolution information is available from the input system. 4998 private static final float DEFAULT_WIDTH_MILLIMETERS = 48; 4999 private static final float DEFAULT_HEIGHT_MILLIMETERS = 48; 5000 5001 /* TODO: These constants should eventually be moved to ViewConfiguration. */ 5002 5003 // The nominal distance traveled to move by one unit. 5004 private static final int TICK_DISTANCE_MILLIMETERS = 12; 5005 5006 // Minimum and maximum fling velocity in ticks per second. 5007 // The minimum velocity should be set such that we perform enough ticks per 5008 // second that the fling appears to be fluid. For example, if we set the minimum 5009 // to 2 ticks per second, then there may be up to half a second delay between the next 5010 // to last and last ticks which is noticeably discrete and jerky. This value should 5011 // probably not be set to anything less than about 4. 5012 // If fling accuracy is a problem then consider tuning the tick distance instead. 5013 private static final float MIN_FLING_VELOCITY_TICKS_PER_SECOND = 6f; 5014 private static final float MAX_FLING_VELOCITY_TICKS_PER_SECOND = 20f; 5015 5016 // Fling velocity decay factor applied after each new key is emitted. 5017 // This parameter controls the deceleration and overall duration of the fling. 5018 // The fling stops automatically when its velocity drops below the minimum 5019 // fling velocity defined above. 5020 private static final float FLING_TICK_DECAY = 0.8f; 5021 5022 /* The input device that we are tracking. */ 5023 5024 private int mCurrentDeviceId = -1; 5025 private int mCurrentSource; 5026 private boolean mCurrentDeviceSupported; 5027 5028 /* Configuration for the current input device. */ 5029 5030 // The scaled tick distance. A movement of this amount should generally translate 5031 // into a single dpad event in a given direction. 5032 private float mConfigTickDistance; 5033 5034 // The minimum and maximum scaled fling velocity. 5035 private float mConfigMinFlingVelocity; 5036 private float mConfigMaxFlingVelocity; 5037 5038 /* Tracking state. */ 5039 5040 // The velocity tracker for detecting flings. 5041 private VelocityTracker mVelocityTracker; 5042 5043 // The active pointer id, or -1 if none. 5044 private int mActivePointerId = -1; 5045 5046 // Location where tracking started. 5047 private float mStartX; 5048 private float mStartY; 5049 5050 // Most recently observed position. 5051 private float mLastX; 5052 private float mLastY; 5053 5054 // Accumulated movement delta since the last direction key was sent. 5055 private float mAccumulatedX; 5056 private float mAccumulatedY; 5057 5058 // Set to true if any movement was delivered to the app. 5059 // Implies that tap slop was exceeded. 5060 private boolean mConsumedMovement; 5061 5062 // The most recently sent key down event. 5063 // The keycode remains set until the direction changes or a fling ends 5064 // so that repeated key events may be generated as required. 5065 private long mPendingKeyDownTime; 5066 private int mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 5067 private int mPendingKeyRepeatCount; 5068 private int mPendingKeyMetaState; 5069 5070 // The current fling velocity while a fling is in progress. 5071 private boolean mFlinging; 5072 private float mFlingVelocity; 5073 5074 public SyntheticTouchNavigationHandler() { 5075 super(true); 5076 } 5077 5078 public void process(MotionEvent event) { 5079 // Update the current device information. 5080 final long time = event.getEventTime(); 5081 final int deviceId = event.getDeviceId(); 5082 final int source = event.getSource(); 5083 if (mCurrentDeviceId != deviceId || mCurrentSource != source) { 5084 finishKeys(time); 5085 finishTracking(time); 5086 mCurrentDeviceId = deviceId; 5087 mCurrentSource = source; 5088 mCurrentDeviceSupported = false; 5089 InputDevice device = event.getDevice(); 5090 if (device != null) { 5091 // In order to support an input device, we must know certain 5092 // characteristics about it, such as its size and resolution. 5093 InputDevice.MotionRange xRange = device.getMotionRange(MotionEvent.AXIS_X); 5094 InputDevice.MotionRange yRange = device.getMotionRange(MotionEvent.AXIS_Y); 5095 if (xRange != null && yRange != null) { 5096 mCurrentDeviceSupported = true; 5097 5098 // Infer the resolution if it not actually known. 5099 float xRes = xRange.getResolution(); 5100 if (xRes <= 0) { 5101 xRes = xRange.getRange() / DEFAULT_WIDTH_MILLIMETERS; 5102 } 5103 float yRes = yRange.getResolution(); 5104 if (yRes <= 0) { 5105 yRes = yRange.getRange() / DEFAULT_HEIGHT_MILLIMETERS; 5106 } 5107 float nominalRes = (xRes + yRes) * 0.5f; 5108 5109 // Precompute all of the configuration thresholds we will need. 5110 mConfigTickDistance = TICK_DISTANCE_MILLIMETERS * nominalRes; 5111 mConfigMinFlingVelocity = 5112 MIN_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 5113 mConfigMaxFlingVelocity = 5114 MAX_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 5115 5116 if (LOCAL_DEBUG) { 5117 Log.d(LOCAL_TAG, "Configured device " + mCurrentDeviceId 5118 + " (" + Integer.toHexString(mCurrentSource) + "): " 5119 + ", mConfigTickDistance=" + mConfigTickDistance 5120 + ", mConfigMinFlingVelocity=" + mConfigMinFlingVelocity 5121 + ", mConfigMaxFlingVelocity=" + mConfigMaxFlingVelocity); 5122 } 5123 } 5124 } 5125 } 5126 if (!mCurrentDeviceSupported) { 5127 return; 5128 } 5129 5130 // Handle the event. 5131 final int action = event.getActionMasked(); 5132 switch (action) { 5133 case MotionEvent.ACTION_DOWN: { 5134 boolean caughtFling = mFlinging; 5135 finishKeys(time); 5136 finishTracking(time); 5137 mActivePointerId = event.getPointerId(0); 5138 mVelocityTracker = VelocityTracker.obtain(); 5139 mVelocityTracker.addMovement(event); 5140 mStartX = event.getX(); 5141 mStartY = event.getY(); 5142 mLastX = mStartX; 5143 mLastY = mStartY; 5144 mAccumulatedX = 0; 5145 mAccumulatedY = 0; 5146 5147 // If we caught a fling, then pretend that the tap slop has already 5148 // been exceeded to suppress taps whose only purpose is to stop the fling. 5149 mConsumedMovement = caughtFling; 5150 break; 5151 } 5152 5153 case MotionEvent.ACTION_MOVE: 5154 case MotionEvent.ACTION_UP: { 5155 if (mActivePointerId < 0) { 5156 break; 5157 } 5158 final int index = event.findPointerIndex(mActivePointerId); 5159 if (index < 0) { 5160 finishKeys(time); 5161 finishTracking(time); 5162 break; 5163 } 5164 5165 mVelocityTracker.addMovement(event); 5166 final float x = event.getX(index); 5167 final float y = event.getY(index); 5168 mAccumulatedX += x - mLastX; 5169 mAccumulatedY += y - mLastY; 5170 mLastX = x; 5171 mLastY = y; 5172 5173 // Consume any accumulated movement so far. 5174 final int metaState = event.getMetaState(); 5175 consumeAccumulatedMovement(time, metaState); 5176 5177 // Detect taps and flings. 5178 if (action == MotionEvent.ACTION_UP) { 5179 if (mConsumedMovement && mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 5180 // It might be a fling. 5181 mVelocityTracker.computeCurrentVelocity(1000, mConfigMaxFlingVelocity); 5182 final float vx = mVelocityTracker.getXVelocity(mActivePointerId); 5183 final float vy = mVelocityTracker.getYVelocity(mActivePointerId); 5184 if (!startFling(time, vx, vy)) { 5185 finishKeys(time); 5186 } 5187 } 5188 finishTracking(time); 5189 } 5190 break; 5191 } 5192 5193 case MotionEvent.ACTION_CANCEL: { 5194 finishKeys(time); 5195 finishTracking(time); 5196 break; 5197 } 5198 } 5199 } 5200 5201 public void cancel(MotionEvent event) { 5202 if (mCurrentDeviceId == event.getDeviceId() 5203 && mCurrentSource == event.getSource()) { 5204 final long time = event.getEventTime(); 5205 finishKeys(time); 5206 finishTracking(time); 5207 } 5208 } 5209 5210 private void finishKeys(long time) { 5211 cancelFling(); 5212 sendKeyUp(time); 5213 } 5214 5215 private void finishTracking(long time) { 5216 if (mActivePointerId >= 0) { 5217 mActivePointerId = -1; 5218 mVelocityTracker.recycle(); 5219 mVelocityTracker = null; 5220 } 5221 } 5222 5223 private void consumeAccumulatedMovement(long time, int metaState) { 5224 final float absX = Math.abs(mAccumulatedX); 5225 final float absY = Math.abs(mAccumulatedY); 5226 if (absX >= absY) { 5227 if (absX >= mConfigTickDistance) { 5228 mAccumulatedX = consumeAccumulatedMovement(time, metaState, mAccumulatedX, 5229 KeyEvent.KEYCODE_DPAD_LEFT, KeyEvent.KEYCODE_DPAD_RIGHT); 5230 mAccumulatedY = 0; 5231 mConsumedMovement = true; 5232 } 5233 } else { 5234 if (absY >= mConfigTickDistance) { 5235 mAccumulatedY = consumeAccumulatedMovement(time, metaState, mAccumulatedY, 5236 KeyEvent.KEYCODE_DPAD_UP, KeyEvent.KEYCODE_DPAD_DOWN); 5237 mAccumulatedX = 0; 5238 mConsumedMovement = true; 5239 } 5240 } 5241 } 5242 5243 private float consumeAccumulatedMovement(long time, int metaState, 5244 float accumulator, int negativeKeyCode, int positiveKeyCode) { 5245 while (accumulator <= -mConfigTickDistance) { 5246 sendKeyDownOrRepeat(time, negativeKeyCode, metaState); 5247 accumulator += mConfigTickDistance; 5248 } 5249 while (accumulator >= mConfigTickDistance) { 5250 sendKeyDownOrRepeat(time, positiveKeyCode, metaState); 5251 accumulator -= mConfigTickDistance; 5252 } 5253 return accumulator; 5254 } 5255 5256 private void sendKeyDownOrRepeat(long time, int keyCode, int metaState) { 5257 if (mPendingKeyCode != keyCode) { 5258 sendKeyUp(time); 5259 mPendingKeyDownTime = time; 5260 mPendingKeyCode = keyCode; 5261 mPendingKeyRepeatCount = 0; 5262 } else { 5263 mPendingKeyRepeatCount += 1; 5264 } 5265 mPendingKeyMetaState = metaState; 5266 5267 // Note: Normally we would pass FLAG_LONG_PRESS when the repeat count is 1 5268 // but it doesn't quite make sense when simulating the events in this way. 5269 if (LOCAL_DEBUG) { 5270 Log.d(LOCAL_TAG, "Sending key down: keyCode=" + mPendingKeyCode 5271 + ", repeatCount=" + mPendingKeyRepeatCount 5272 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 5273 } 5274 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 5275 KeyEvent.ACTION_DOWN, mPendingKeyCode, mPendingKeyRepeatCount, 5276 mPendingKeyMetaState, mCurrentDeviceId, 5277 KeyEvent.FLAG_FALLBACK, mCurrentSource)); 5278 } 5279 5280 private void sendKeyUp(long time) { 5281 if (mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 5282 if (LOCAL_DEBUG) { 5283 Log.d(LOCAL_TAG, "Sending key up: keyCode=" + mPendingKeyCode 5284 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 5285 } 5286 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 5287 KeyEvent.ACTION_UP, mPendingKeyCode, 0, mPendingKeyMetaState, 5288 mCurrentDeviceId, 0, KeyEvent.FLAG_FALLBACK, 5289 mCurrentSource)); 5290 mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 5291 } 5292 } 5293 5294 private boolean startFling(long time, float vx, float vy) { 5295 if (LOCAL_DEBUG) { 5296 Log.d(LOCAL_TAG, "Considering fling: vx=" + vx + ", vy=" + vy 5297 + ", min=" + mConfigMinFlingVelocity); 5298 } 5299 5300 // Flings must be oriented in the same direction as the preceding movements. 5301 switch (mPendingKeyCode) { 5302 case KeyEvent.KEYCODE_DPAD_LEFT: 5303 if (-vx >= mConfigMinFlingVelocity 5304 && Math.abs(vy) < mConfigMinFlingVelocity) { 5305 mFlingVelocity = -vx; 5306 break; 5307 } 5308 return false; 5309 5310 case KeyEvent.KEYCODE_DPAD_RIGHT: 5311 if (vx >= mConfigMinFlingVelocity 5312 && Math.abs(vy) < mConfigMinFlingVelocity) { 5313 mFlingVelocity = vx; 5314 break; 5315 } 5316 return false; 5317 5318 case KeyEvent.KEYCODE_DPAD_UP: 5319 if (-vy >= mConfigMinFlingVelocity 5320 && Math.abs(vx) < mConfigMinFlingVelocity) { 5321 mFlingVelocity = -vy; 5322 break; 5323 } 5324 return false; 5325 5326 case KeyEvent.KEYCODE_DPAD_DOWN: 5327 if (vy >= mConfigMinFlingVelocity 5328 && Math.abs(vx) < mConfigMinFlingVelocity) { 5329 mFlingVelocity = vy; 5330 break; 5331 } 5332 return false; 5333 } 5334 5335 // Post the first fling event. 5336 mFlinging = postFling(time); 5337 return mFlinging; 5338 } 5339 5340 private boolean postFling(long time) { 5341 // The idea here is to estimate the time when the pointer would have 5342 // traveled one tick distance unit given the current fling velocity. 5343 // This effect creates continuity of motion. 5344 if (mFlingVelocity >= mConfigMinFlingVelocity) { 5345 long delay = (long)(mConfigTickDistance / mFlingVelocity * 1000); 5346 postAtTime(mFlingRunnable, time + delay); 5347 if (LOCAL_DEBUG) { 5348 Log.d(LOCAL_TAG, "Posted fling: velocity=" 5349 + mFlingVelocity + ", delay=" + delay 5350 + ", keyCode=" + mPendingKeyCode); 5351 } 5352 return true; 5353 } 5354 return false; 5355 } 5356 5357 private void cancelFling() { 5358 if (mFlinging) { 5359 removeCallbacks(mFlingRunnable); 5360 mFlinging = false; 5361 } 5362 } 5363 5364 private final Runnable mFlingRunnable = new Runnable() { 5365 @Override 5366 public void run() { 5367 final long time = SystemClock.uptimeMillis(); 5368 sendKeyDownOrRepeat(time, mPendingKeyCode, mPendingKeyMetaState); 5369 mFlingVelocity *= FLING_TICK_DECAY; 5370 if (!postFling(time)) { 5371 mFlinging = false; 5372 finishKeys(time); 5373 } 5374 } 5375 }; 5376 } 5377 5378 final class SyntheticKeyboardHandler { 5379 public void process(KeyEvent event) { 5380 if ((event.getFlags() & KeyEvent.FLAG_FALLBACK) != 0) { 5381 return; 5382 } 5383 5384 final KeyCharacterMap kcm = event.getKeyCharacterMap(); 5385 final int keyCode = event.getKeyCode(); 5386 final int metaState = event.getMetaState(); 5387 5388 // Check for fallback actions specified by the key character map. 5389 KeyCharacterMap.FallbackAction fallbackAction = 5390 kcm.getFallbackAction(keyCode, metaState); 5391 if (fallbackAction != null) { 5392 final int flags = event.getFlags() | KeyEvent.FLAG_FALLBACK; 5393 KeyEvent fallbackEvent = KeyEvent.obtain( 5394 event.getDownTime(), event.getEventTime(), 5395 event.getAction(), fallbackAction.keyCode, 5396 event.getRepeatCount(), fallbackAction.metaState, 5397 event.getDeviceId(), event.getScanCode(), 5398 flags, event.getSource(), null); 5399 fallbackAction.recycle(); 5400 enqueueInputEvent(fallbackEvent); 5401 } 5402 } 5403 } 5404 5405 /** 5406 * Returns true if the key is used for keyboard navigation. 5407 * @param keyEvent The key event. 5408 * @return True if the key is used for keyboard navigation. 5409 */ 5410 private static boolean isNavigationKey(KeyEvent keyEvent) { 5411 switch (keyEvent.getKeyCode()) { 5412 case KeyEvent.KEYCODE_DPAD_LEFT: 5413 case KeyEvent.KEYCODE_DPAD_RIGHT: 5414 case KeyEvent.KEYCODE_DPAD_UP: 5415 case KeyEvent.KEYCODE_DPAD_DOWN: 5416 case KeyEvent.KEYCODE_DPAD_CENTER: 5417 case KeyEvent.KEYCODE_PAGE_UP: 5418 case KeyEvent.KEYCODE_PAGE_DOWN: 5419 case KeyEvent.KEYCODE_MOVE_HOME: 5420 case KeyEvent.KEYCODE_MOVE_END: 5421 case KeyEvent.KEYCODE_TAB: 5422 case KeyEvent.KEYCODE_SPACE: 5423 case KeyEvent.KEYCODE_ENTER: 5424 return true; 5425 } 5426 return false; 5427 } 5428 5429 /** 5430 * Returns true if the key is used for typing. 5431 * @param keyEvent The key event. 5432 * @return True if the key is used for typing. 5433 */ 5434 private static boolean isTypingKey(KeyEvent keyEvent) { 5435 return keyEvent.getUnicodeChar() > 0; 5436 } 5437 5438 /** 5439 * See if the key event means we should leave touch mode (and leave touch mode if so). 5440 * @param event The key event. 5441 * @return Whether this key event should be consumed (meaning the act of 5442 * leaving touch mode alone is considered the event). 5443 */ 5444 private boolean checkForLeavingTouchModeAndConsume(KeyEvent event) { 5445 // Only relevant in touch mode. 5446 if (!mAttachInfo.mInTouchMode) { 5447 return false; 5448 } 5449 5450 // Only consider leaving touch mode on DOWN or MULTIPLE actions, never on UP. 5451 final int action = event.getAction(); 5452 if (action != KeyEvent.ACTION_DOWN && action != KeyEvent.ACTION_MULTIPLE) { 5453 return false; 5454 } 5455 5456 // Don't leave touch mode if the IME told us not to. 5457 if ((event.getFlags() & KeyEvent.FLAG_KEEP_TOUCH_MODE) != 0) { 5458 return false; 5459 } 5460 5461 // If the key can be used for keyboard navigation then leave touch mode 5462 // and select a focused view if needed (in ensureTouchMode). 5463 // When a new focused view is selected, we consume the navigation key because 5464 // navigation doesn't make much sense unless a view already has focus so 5465 // the key's purpose is to set focus. 5466 if (isNavigationKey(event)) { 5467 return ensureTouchMode(false); 5468 } 5469 5470 // If the key can be used for typing then leave touch mode 5471 // and select a focused view if needed (in ensureTouchMode). 5472 // Always allow the view to process the typing key. 5473 if (isTypingKey(event)) { 5474 ensureTouchMode(false); 5475 return false; 5476 } 5477 5478 return false; 5479 } 5480 5481 /* drag/drop */ 5482 void setLocalDragState(Object obj) { 5483 mLocalDragState = obj; 5484 } 5485 5486 private void handleDragEvent(DragEvent event) { 5487 // From the root, only drag start/end/location are dispatched. entered/exited 5488 // are determined and dispatched by the viewgroup hierarchy, who then report 5489 // that back here for ultimate reporting back to the framework. 5490 if (mView != null && mAdded) { 5491 final int what = event.mAction; 5492 5493 if (what == DragEvent.ACTION_DRAG_EXITED) { 5494 // A direct EXITED event means that the window manager knows we've just crossed 5495 // a window boundary, so the current drag target within this one must have 5496 // just been exited. Send it the usual notifications and then we're done 5497 // for now. 5498 mView.dispatchDragEvent(event); 5499 } else { 5500 // Cache the drag description when the operation starts, then fill it in 5501 // on subsequent calls as a convenience 5502 if (what == DragEvent.ACTION_DRAG_STARTED) { 5503 mCurrentDragView = null; // Start the current-recipient tracking 5504 mDragDescription = event.mClipDescription; 5505 } else { 5506 event.mClipDescription = mDragDescription; 5507 } 5508 5509 // For events with a [screen] location, translate into window coordinates 5510 if ((what == DragEvent.ACTION_DRAG_LOCATION) || (what == DragEvent.ACTION_DROP)) { 5511 mDragPoint.set(event.mX, event.mY); 5512 if (mTranslator != null) { 5513 mTranslator.translatePointInScreenToAppWindow(mDragPoint); 5514 } 5515 5516 if (mCurScrollY != 0) { 5517 mDragPoint.offset(0, mCurScrollY); 5518 } 5519 5520 event.mX = mDragPoint.x; 5521 event.mY = mDragPoint.y; 5522 } 5523 5524 // Remember who the current drag target is pre-dispatch 5525 final View prevDragView = mCurrentDragView; 5526 5527 // Now dispatch the drag/drop event 5528 boolean result = mView.dispatchDragEvent(event); 5529 5530 // If we changed apparent drag target, tell the OS about it 5531 if (prevDragView != mCurrentDragView) { 5532 try { 5533 if (prevDragView != null) { 5534 mWindowSession.dragRecipientExited(mWindow); 5535 } 5536 if (mCurrentDragView != null) { 5537 mWindowSession.dragRecipientEntered(mWindow); 5538 } 5539 } catch (RemoteException e) { 5540 Slog.e(mTag, "Unable to note drag target change"); 5541 } 5542 } 5543 5544 // Report the drop result when we're done 5545 if (what == DragEvent.ACTION_DROP) { 5546 mDragDescription = null; 5547 try { 5548 Log.i(mTag, "Reporting drop result: " + result); 5549 mWindowSession.reportDropResult(mWindow, result); 5550 } catch (RemoteException e) { 5551 Log.e(mTag, "Unable to report drop result"); 5552 } 5553 } 5554 5555 // When the drag operation ends, reset drag-related state 5556 if (what == DragEvent.ACTION_DRAG_ENDED) { 5557 setLocalDragState(null); 5558 mAttachInfo.mDragToken = null; 5559 if (mAttachInfo.mDragSurface != null) { 5560 mAttachInfo.mDragSurface.release(); 5561 mAttachInfo.mDragSurface = null; 5562 } 5563 } 5564 } 5565 } 5566 event.recycle(); 5567 } 5568 5569 public void handleDispatchSystemUiVisibilityChanged(SystemUiVisibilityInfo args) { 5570 if (mSeq != args.seq) { 5571 // The sequence has changed, so we need to update our value and make 5572 // sure to do a traversal afterward so the window manager is given our 5573 // most recent data. 5574 mSeq = args.seq; 5575 mAttachInfo.mForceReportNewAttributes = true; 5576 scheduleTraversals(); 5577 } 5578 if (mView == null) return; 5579 if (args.localChanges != 0) { 5580 mView.updateLocalSystemUiVisibility(args.localValue, args.localChanges); 5581 } 5582 5583 int visibility = args.globalVisibility&View.SYSTEM_UI_CLEARABLE_FLAGS; 5584 if (visibility != mAttachInfo.mGlobalSystemUiVisibility) { 5585 mAttachInfo.mGlobalSystemUiVisibility = visibility; 5586 mView.dispatchSystemUiVisibilityChanged(visibility); 5587 } 5588 } 5589 5590 public void handleDispatchWindowShown() { 5591 mAttachInfo.mTreeObserver.dispatchOnWindowShown(); 5592 } 5593 5594 public void handleRequestKeyboardShortcuts(IResultReceiver receiver, int deviceId) { 5595 Bundle data = new Bundle(); 5596 ArrayList<KeyboardShortcutGroup> list = new ArrayList<>(); 5597 if (mView != null) { 5598 mView.requestKeyboardShortcuts(list, deviceId); 5599 } 5600 data.putParcelableArrayList(WindowManager.PARCEL_KEY_SHORTCUTS_ARRAY, list); 5601 try { 5602 receiver.send(0, data); 5603 } catch (RemoteException e) { 5604 } 5605 } 5606 5607 public void getLastTouchPoint(Point outLocation) { 5608 outLocation.x = (int) mLastTouchPoint.x; 5609 outLocation.y = (int) mLastTouchPoint.y; 5610 } 5611 5612 public int getLastTouchSource() { 5613 return mLastTouchSource; 5614 } 5615 5616 public void setDragFocus(View newDragTarget) { 5617 if (mCurrentDragView != newDragTarget) { 5618 mCurrentDragView = newDragTarget; 5619 } 5620 } 5621 5622 private AudioManager getAudioManager() { 5623 if (mView == null) { 5624 throw new IllegalStateException("getAudioManager called when there is no mView"); 5625 } 5626 if (mAudioManager == null) { 5627 mAudioManager = (AudioManager) mView.getContext().getSystemService(Context.AUDIO_SERVICE); 5628 } 5629 return mAudioManager; 5630 } 5631 5632 public AccessibilityInteractionController getAccessibilityInteractionController() { 5633 if (mView == null) { 5634 throw new IllegalStateException("getAccessibilityInteractionController" 5635 + " called when there is no mView"); 5636 } 5637 if (mAccessibilityInteractionController == null) { 5638 mAccessibilityInteractionController = new AccessibilityInteractionController(this); 5639 } 5640 return mAccessibilityInteractionController; 5641 } 5642 5643 private int relayoutWindow(WindowManager.LayoutParams params, int viewVisibility, 5644 boolean insetsPending) throws RemoteException { 5645 5646 float appScale = mAttachInfo.mApplicationScale; 5647 boolean restore = false; 5648 if (params != null && mTranslator != null) { 5649 restore = true; 5650 params.backup(); 5651 mTranslator.translateWindowLayout(params); 5652 } 5653 if (params != null) { 5654 if (DBG) Log.d(mTag, "WindowLayout in layoutWindow:" + params); 5655 } 5656 mPendingConfiguration.seq = 0; 5657 //Log.d(mTag, ">>>>>> CALLING relayout"); 5658 if (params != null && mOrigWindowType != params.type) { 5659 // For compatibility with old apps, don't crash here. 5660 if (mTargetSdkVersion < Build.VERSION_CODES.ICE_CREAM_SANDWICH) { 5661 Slog.w(mTag, "Window type can not be changed after " 5662 + "the window is added; ignoring change of " + mView); 5663 params.type = mOrigWindowType; 5664 } 5665 } 5666 int relayoutResult = mWindowSession.relayout( 5667 mWindow, mSeq, params, 5668 (int) (mView.getMeasuredWidth() * appScale + 0.5f), 5669 (int) (mView.getMeasuredHeight() * appScale + 0.5f), 5670 viewVisibility, insetsPending ? WindowManagerGlobal.RELAYOUT_INSETS_PENDING : 0, 5671 mWinFrame, mPendingOverscanInsets, mPendingContentInsets, mPendingVisibleInsets, 5672 mPendingStableInsets, mPendingOutsets, mPendingBackDropFrame, mPendingConfiguration, 5673 mSurface); 5674 5675 mPendingAlwaysConsumeNavBar = 5676 (relayoutResult & WindowManagerGlobal.RELAYOUT_RES_CONSUME_ALWAYS_NAV_BAR) != 0; 5677 5678 //Log.d(mTag, "<<<<<< BACK FROM relayout"); 5679 if (restore) { 5680 params.restore(); 5681 } 5682 5683 if (mTranslator != null) { 5684 mTranslator.translateRectInScreenToAppWinFrame(mWinFrame); 5685 mTranslator.translateRectInScreenToAppWindow(mPendingOverscanInsets); 5686 mTranslator.translateRectInScreenToAppWindow(mPendingContentInsets); 5687 mTranslator.translateRectInScreenToAppWindow(mPendingVisibleInsets); 5688 mTranslator.translateRectInScreenToAppWindow(mPendingStableInsets); 5689 } 5690 return relayoutResult; 5691 } 5692 5693 /** 5694 * {@inheritDoc} 5695 */ 5696 @Override 5697 public void playSoundEffect(int effectId) { 5698 checkThread(); 5699 5700 try { 5701 final AudioManager audioManager = getAudioManager(); 5702 5703 switch (effectId) { 5704 case SoundEffectConstants.CLICK: 5705 audioManager.playSoundEffect(AudioManager.FX_KEY_CLICK); 5706 return; 5707 case SoundEffectConstants.NAVIGATION_DOWN: 5708 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_DOWN); 5709 return; 5710 case SoundEffectConstants.NAVIGATION_LEFT: 5711 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_LEFT); 5712 return; 5713 case SoundEffectConstants.NAVIGATION_RIGHT: 5714 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_RIGHT); 5715 return; 5716 case SoundEffectConstants.NAVIGATION_UP: 5717 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_UP); 5718 return; 5719 default: 5720 throw new IllegalArgumentException("unknown effect id " + effectId + 5721 " not defined in " + SoundEffectConstants.class.getCanonicalName()); 5722 } 5723 } catch (IllegalStateException e) { 5724 // Exception thrown by getAudioManager() when mView is null 5725 Log.e(mTag, "FATAL EXCEPTION when attempting to play sound effect: " + e); 5726 e.printStackTrace(); 5727 } 5728 } 5729 5730 /** 5731 * {@inheritDoc} 5732 */ 5733 @Override 5734 public boolean performHapticFeedback(int effectId, boolean always) { 5735 try { 5736 return mWindowSession.performHapticFeedback(mWindow, effectId, always); 5737 } catch (RemoteException e) { 5738 return false; 5739 } 5740 } 5741 5742 /** 5743 * {@inheritDoc} 5744 */ 5745 @Override 5746 public View focusSearch(View focused, int direction) { 5747 checkThread(); 5748 if (!(mView instanceof ViewGroup)) { 5749 return null; 5750 } 5751 return FocusFinder.getInstance().findNextFocus((ViewGroup) mView, focused, direction); 5752 } 5753 5754 public void debug() { 5755 mView.debug(); 5756 } 5757 5758 public void dump(String prefix, FileDescriptor fd, PrintWriter writer, String[] args) { 5759 String innerPrefix = prefix + " "; 5760 writer.print(prefix); writer.println("ViewRoot:"); 5761 writer.print(innerPrefix); writer.print("mAdded="); writer.print(mAdded); 5762 writer.print(" mRemoved="); writer.println(mRemoved); 5763 writer.print(innerPrefix); writer.print("mConsumeBatchedInputScheduled="); 5764 writer.println(mConsumeBatchedInputScheduled); 5765 writer.print(innerPrefix); writer.print("mConsumeBatchedInputImmediatelyScheduled="); 5766 writer.println(mConsumeBatchedInputImmediatelyScheduled); 5767 writer.print(innerPrefix); writer.print("mPendingInputEventCount="); 5768 writer.println(mPendingInputEventCount); 5769 writer.print(innerPrefix); writer.print("mProcessInputEventsScheduled="); 5770 writer.println(mProcessInputEventsScheduled); 5771 writer.print(innerPrefix); writer.print("mTraversalScheduled="); 5772 writer.print(mTraversalScheduled); 5773 writer.print(innerPrefix); writer.print("mIsAmbientMode="); 5774 writer.print(mIsAmbientMode); 5775 if (mTraversalScheduled) { 5776 writer.print(" (barrier="); writer.print(mTraversalBarrier); writer.println(")"); 5777 } else { 5778 writer.println(); 5779 } 5780 mFirstInputStage.dump(innerPrefix, writer); 5781 5782 mChoreographer.dump(prefix, writer); 5783 5784 writer.print(prefix); writer.println("View Hierarchy:"); 5785 dumpViewHierarchy(innerPrefix, writer, mView); 5786 } 5787 5788 private void dumpViewHierarchy(String prefix, PrintWriter writer, View view) { 5789 writer.print(prefix); 5790 if (view == null) { 5791 writer.println("null"); 5792 return; 5793 } 5794 writer.println(view.toString()); 5795 if (!(view instanceof ViewGroup)) { 5796 return; 5797 } 5798 ViewGroup grp = (ViewGroup)view; 5799 final int N = grp.getChildCount(); 5800 if (N <= 0) { 5801 return; 5802 } 5803 prefix = prefix + " "; 5804 for (int i=0; i<N; i++) { 5805 dumpViewHierarchy(prefix, writer, grp.getChildAt(i)); 5806 } 5807 } 5808 5809 public void dumpGfxInfo(int[] info) { 5810 info[0] = info[1] = 0; 5811 if (mView != null) { 5812 getGfxInfo(mView, info); 5813 } 5814 } 5815 5816 private static void getGfxInfo(View view, int[] info) { 5817 RenderNode renderNode = view.mRenderNode; 5818 info[0]++; 5819 if (renderNode != null) { 5820 info[1] += renderNode.getDebugSize(); 5821 } 5822 5823 if (view instanceof ViewGroup) { 5824 ViewGroup group = (ViewGroup) view; 5825 5826 int count = group.getChildCount(); 5827 for (int i = 0; i < count; i++) { 5828 getGfxInfo(group.getChildAt(i), info); 5829 } 5830 } 5831 } 5832 5833 /** 5834 * @param immediate True, do now if not in traversal. False, put on queue and do later. 5835 * @return True, request has been queued. False, request has been completed. 5836 */ 5837 boolean die(boolean immediate) { 5838 // Make sure we do execute immediately if we are in the middle of a traversal or the damage 5839 // done by dispatchDetachedFromWindow will cause havoc on return. 5840 if (immediate && !mIsInTraversal) { 5841 doDie(); 5842 return false; 5843 } 5844 5845 if (!mIsDrawing) { 5846 destroyHardwareRenderer(); 5847 } else { 5848 Log.e(mTag, "Attempting to destroy the window while drawing!\n" + 5849 " window=" + this + ", title=" + mWindowAttributes.getTitle()); 5850 } 5851 mHandler.sendEmptyMessage(MSG_DIE); 5852 return true; 5853 } 5854 5855 void doDie() { 5856 checkThread(); 5857 if (LOCAL_LOGV) Log.v(mTag, "DIE in " + this + " of " + mSurface); 5858 synchronized (this) { 5859 if (mRemoved) { 5860 return; 5861 } 5862 mRemoved = true; 5863 if (mAdded) { 5864 dispatchDetachedFromWindow(); 5865 } 5866 5867 if (mAdded && !mFirst) { 5868 destroyHardwareRenderer(); 5869 5870 if (mView != null) { 5871 int viewVisibility = mView.getVisibility(); 5872 boolean viewVisibilityChanged = mViewVisibility != viewVisibility; 5873 if (mWindowAttributesChanged || viewVisibilityChanged) { 5874 // If layout params have been changed, first give them 5875 // to the window manager to make sure it has the correct 5876 // animation info. 5877 try { 5878 if ((relayoutWindow(mWindowAttributes, viewVisibility, false) 5879 & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 5880 mWindowSession.finishDrawing(mWindow); 5881 } 5882 } catch (RemoteException e) { 5883 } 5884 } 5885 5886 mSurface.release(); 5887 } 5888 } 5889 5890 mAdded = false; 5891 } 5892 WindowManagerGlobal.getInstance().doRemoveView(this); 5893 } 5894 5895 public void requestUpdateConfiguration(Configuration config) { 5896 Message msg = mHandler.obtainMessage(MSG_UPDATE_CONFIGURATION, config); 5897 mHandler.sendMessage(msg); 5898 } 5899 5900 public void loadSystemProperties() { 5901 mHandler.post(new Runnable() { 5902 @Override 5903 public void run() { 5904 // Profiling 5905 mProfileRendering = SystemProperties.getBoolean(PROPERTY_PROFILE_RENDERING, false); 5906 profileRendering(mAttachInfo.mHasWindowFocus); 5907 5908 // Hardware rendering 5909 if (mAttachInfo.mHardwareRenderer != null) { 5910 if (mAttachInfo.mHardwareRenderer.loadSystemProperties()) { 5911 invalidate(); 5912 } 5913 } 5914 5915 // Layout debugging 5916 boolean layout = SystemProperties.getBoolean(View.DEBUG_LAYOUT_PROPERTY, false); 5917 if (layout != mAttachInfo.mDebugLayout) { 5918 mAttachInfo.mDebugLayout = layout; 5919 if (!mHandler.hasMessages(MSG_INVALIDATE_WORLD)) { 5920 mHandler.sendEmptyMessageDelayed(MSG_INVALIDATE_WORLD, 200); 5921 } 5922 } 5923 } 5924 }); 5925 } 5926 5927 private void destroyHardwareRenderer() { 5928 ThreadedRenderer hardwareRenderer = mAttachInfo.mHardwareRenderer; 5929 5930 if (hardwareRenderer != null) { 5931 if (mView != null) { 5932 hardwareRenderer.destroyHardwareResources(mView); 5933 } 5934 hardwareRenderer.destroy(); 5935 hardwareRenderer.setRequested(false); 5936 5937 mAttachInfo.mHardwareRenderer = null; 5938 mAttachInfo.mHardwareAccelerated = false; 5939 } 5940 } 5941 5942 public void dispatchResized(Rect frame, Rect overscanInsets, Rect contentInsets, 5943 Rect visibleInsets, Rect stableInsets, Rect outsets, boolean reportDraw, 5944 Configuration newConfig, Rect backDropFrame, boolean forceLayout, 5945 boolean alwaysConsumeNavBar) { 5946 if (DEBUG_LAYOUT) Log.v(mTag, "Resizing " + this + ": frame=" + frame.toShortString() 5947 + " contentInsets=" + contentInsets.toShortString() 5948 + " visibleInsets=" + visibleInsets.toShortString() 5949 + " reportDraw=" + reportDraw 5950 + " backDropFrame=" + backDropFrame); 5951 5952 // Tell all listeners that we are resizing the window so that the chrome can get 5953 // updated as fast as possible on a separate thread, 5954 if (mDragResizing) { 5955 boolean fullscreen = frame.equals(backDropFrame); 5956 synchronized (mWindowCallbacks) { 5957 for (int i = mWindowCallbacks.size() - 1; i >= 0; i--) { 5958 mWindowCallbacks.get(i).onWindowSizeIsChanging(backDropFrame, fullscreen, 5959 visibleInsets, stableInsets); 5960 } 5961 } 5962 } 5963 5964 Message msg = mHandler.obtainMessage(reportDraw ? MSG_RESIZED_REPORT : MSG_RESIZED); 5965 if (mTranslator != null) { 5966 mTranslator.translateRectInScreenToAppWindow(frame); 5967 mTranslator.translateRectInScreenToAppWindow(overscanInsets); 5968 mTranslator.translateRectInScreenToAppWindow(contentInsets); 5969 mTranslator.translateRectInScreenToAppWindow(visibleInsets); 5970 } 5971 SomeArgs args = SomeArgs.obtain(); 5972 final boolean sameProcessCall = (Binder.getCallingPid() == android.os.Process.myPid()); 5973 args.arg1 = sameProcessCall ? new Rect(frame) : frame; 5974 args.arg2 = sameProcessCall ? new Rect(contentInsets) : contentInsets; 5975 args.arg3 = sameProcessCall ? new Rect(visibleInsets) : visibleInsets; 5976 args.arg4 = sameProcessCall && newConfig != null ? new Configuration(newConfig) : newConfig; 5977 args.arg5 = sameProcessCall ? new Rect(overscanInsets) : overscanInsets; 5978 args.arg6 = sameProcessCall ? new Rect(stableInsets) : stableInsets; 5979 args.arg7 = sameProcessCall ? new Rect(outsets) : outsets; 5980 args.arg8 = sameProcessCall ? new Rect(backDropFrame) : backDropFrame; 5981 args.argi1 = forceLayout ? 1 : 0; 5982 args.argi2 = alwaysConsumeNavBar ? 1 : 0; 5983 msg.obj = args; 5984 mHandler.sendMessage(msg); 5985 } 5986 5987 public void dispatchMoved(int newX, int newY) { 5988 if (DEBUG_LAYOUT) Log.v(mTag, "Window moved " + this + ": newX=" + newX + " newY=" + newY); 5989 if (mTranslator != null) { 5990 PointF point = new PointF(newX, newY); 5991 mTranslator.translatePointInScreenToAppWindow(point); 5992 newX = (int) (point.x + 0.5); 5993 newY = (int) (point.y + 0.5); 5994 } 5995 Message msg = mHandler.obtainMessage(MSG_WINDOW_MOVED, newX, newY); 5996 mHandler.sendMessage(msg); 5997 } 5998 5999 /** 6000 * Represents a pending input event that is waiting in a queue. 6001 * 6002 * Input events are processed in serial order by the timestamp specified by 6003 * {@link InputEvent#getEventTimeNano()}. In general, the input dispatcher delivers 6004 * one input event to the application at a time and waits for the application 6005 * to finish handling it before delivering the next one. 6006 * 6007 * However, because the application or IME can synthesize and inject multiple 6008 * key events at a time without going through the input dispatcher, we end up 6009 * needing a queue on the application's side. 6010 */ 6011 private static final class QueuedInputEvent { 6012 public static final int FLAG_DELIVER_POST_IME = 1 << 0; 6013 public static final int FLAG_DEFERRED = 1 << 1; 6014 public static final int FLAG_FINISHED = 1 << 2; 6015 public static final int FLAG_FINISHED_HANDLED = 1 << 3; 6016 public static final int FLAG_RESYNTHESIZED = 1 << 4; 6017 public static final int FLAG_UNHANDLED = 1 << 5; 6018 6019 public QueuedInputEvent mNext; 6020 6021 public InputEvent mEvent; 6022 public InputEventReceiver mReceiver; 6023 public int mFlags; 6024 6025 public boolean shouldSkipIme() { 6026 if ((mFlags & FLAG_DELIVER_POST_IME) != 0) { 6027 return true; 6028 } 6029 return mEvent instanceof MotionEvent 6030 && mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER); 6031 } 6032 6033 public boolean shouldSendToSynthesizer() { 6034 if ((mFlags & FLAG_UNHANDLED) != 0) { 6035 return true; 6036 } 6037 6038 return false; 6039 } 6040 6041 @Override 6042 public String toString() { 6043 StringBuilder sb = new StringBuilder("QueuedInputEvent{flags="); 6044 boolean hasPrevious = false; 6045 hasPrevious = flagToString("DELIVER_POST_IME", FLAG_DELIVER_POST_IME, hasPrevious, sb); 6046 hasPrevious = flagToString("DEFERRED", FLAG_DEFERRED, hasPrevious, sb); 6047 hasPrevious = flagToString("FINISHED", FLAG_FINISHED, hasPrevious, sb); 6048 hasPrevious = flagToString("FINISHED_HANDLED", FLAG_FINISHED_HANDLED, hasPrevious, sb); 6049 hasPrevious = flagToString("RESYNTHESIZED", FLAG_RESYNTHESIZED, hasPrevious, sb); 6050 hasPrevious = flagToString("UNHANDLED", FLAG_UNHANDLED, hasPrevious, sb); 6051 if (!hasPrevious) { 6052 sb.append("0"); 6053 } 6054 sb.append(", hasNextQueuedEvent=" + (mEvent != null ? "true" : "false")); 6055 sb.append(", hasInputEventReceiver=" + (mReceiver != null ? "true" : "false")); 6056 sb.append(", mEvent=" + mEvent + "}"); 6057 return sb.toString(); 6058 } 6059 6060 private boolean flagToString(String name, int flag, 6061 boolean hasPrevious, StringBuilder sb) { 6062 if ((mFlags & flag) != 0) { 6063 if (hasPrevious) { 6064 sb.append("|"); 6065 } 6066 sb.append(name); 6067 return true; 6068 } 6069 return hasPrevious; 6070 } 6071 } 6072 6073 private QueuedInputEvent obtainQueuedInputEvent(InputEvent event, 6074 InputEventReceiver receiver, int flags) { 6075 QueuedInputEvent q = mQueuedInputEventPool; 6076 if (q != null) { 6077 mQueuedInputEventPoolSize -= 1; 6078 mQueuedInputEventPool = q.mNext; 6079 q.mNext = null; 6080 } else { 6081 q = new QueuedInputEvent(); 6082 } 6083 6084 q.mEvent = event; 6085 q.mReceiver = receiver; 6086 q.mFlags = flags; 6087 return q; 6088 } 6089 6090 private void recycleQueuedInputEvent(QueuedInputEvent q) { 6091 q.mEvent = null; 6092 q.mReceiver = null; 6093 6094 if (mQueuedInputEventPoolSize < MAX_QUEUED_INPUT_EVENT_POOL_SIZE) { 6095 mQueuedInputEventPoolSize += 1; 6096 q.mNext = mQueuedInputEventPool; 6097 mQueuedInputEventPool = q; 6098 } 6099 } 6100 6101 void enqueueInputEvent(InputEvent event) { 6102 enqueueInputEvent(event, null, 0, false); 6103 } 6104 6105 void enqueueInputEvent(InputEvent event, 6106 InputEventReceiver receiver, int flags, boolean processImmediately) { 6107 adjustInputEventForCompatibility(event); 6108 QueuedInputEvent q = obtainQueuedInputEvent(event, receiver, flags); 6109 6110 // Always enqueue the input event in order, regardless of its time stamp. 6111 // We do this because the application or the IME may inject key events 6112 // in response to touch events and we want to ensure that the injected keys 6113 // are processed in the order they were received and we cannot trust that 6114 // the time stamp of injected events are monotonic. 6115 QueuedInputEvent last = mPendingInputEventTail; 6116 if (last == null) { 6117 mPendingInputEventHead = q; 6118 mPendingInputEventTail = q; 6119 } else { 6120 last.mNext = q; 6121 mPendingInputEventTail = q; 6122 } 6123 mPendingInputEventCount += 1; 6124 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 6125 mPendingInputEventCount); 6126 6127 if (processImmediately) { 6128 doProcessInputEvents(); 6129 } else { 6130 scheduleProcessInputEvents(); 6131 } 6132 } 6133 6134 private void scheduleProcessInputEvents() { 6135 if (!mProcessInputEventsScheduled) { 6136 mProcessInputEventsScheduled = true; 6137 Message msg = mHandler.obtainMessage(MSG_PROCESS_INPUT_EVENTS); 6138 msg.setAsynchronous(true); 6139 mHandler.sendMessage(msg); 6140 } 6141 } 6142 6143 void doProcessInputEvents() { 6144 // Deliver all pending input events in the queue. 6145 while (mPendingInputEventHead != null) { 6146 QueuedInputEvent q = mPendingInputEventHead; 6147 mPendingInputEventHead = q.mNext; 6148 if (mPendingInputEventHead == null) { 6149 mPendingInputEventTail = null; 6150 } 6151 q.mNext = null; 6152 6153 mPendingInputEventCount -= 1; 6154 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 6155 mPendingInputEventCount); 6156 6157 long eventTime = q.mEvent.getEventTimeNano(); 6158 long oldestEventTime = eventTime; 6159 if (q.mEvent instanceof MotionEvent) { 6160 MotionEvent me = (MotionEvent)q.mEvent; 6161 if (me.getHistorySize() > 0) { 6162 oldestEventTime = me.getHistoricalEventTimeNano(0); 6163 } 6164 } 6165 mChoreographer.mFrameInfo.updateInputEventTime(eventTime, oldestEventTime); 6166 6167 deliverInputEvent(q); 6168 } 6169 6170 // We are done processing all input events that we can process right now 6171 // so we can clear the pending flag immediately. 6172 if (mProcessInputEventsScheduled) { 6173 mProcessInputEventsScheduled = false; 6174 mHandler.removeMessages(MSG_PROCESS_INPUT_EVENTS); 6175 } 6176 } 6177 6178 private void deliverInputEvent(QueuedInputEvent q) { 6179 Trace.asyncTraceBegin(Trace.TRACE_TAG_VIEW, "deliverInputEvent", 6180 q.mEvent.getSequenceNumber()); 6181 if (mInputEventConsistencyVerifier != null) { 6182 mInputEventConsistencyVerifier.onInputEvent(q.mEvent, 0); 6183 } 6184 6185 InputStage stage; 6186 if (q.shouldSendToSynthesizer()) { 6187 stage = mSyntheticInputStage; 6188 } else { 6189 stage = q.shouldSkipIme() ? mFirstPostImeInputStage : mFirstInputStage; 6190 } 6191 6192 if (stage != null) { 6193 stage.deliver(q); 6194 } else { 6195 finishInputEvent(q); 6196 } 6197 } 6198 6199 private void finishInputEvent(QueuedInputEvent q) { 6200 Trace.asyncTraceEnd(Trace.TRACE_TAG_VIEW, "deliverInputEvent", 6201 q.mEvent.getSequenceNumber()); 6202 6203 if (q.mReceiver != null) { 6204 boolean handled = (q.mFlags & QueuedInputEvent.FLAG_FINISHED_HANDLED) != 0; 6205 q.mReceiver.finishInputEvent(q.mEvent, handled); 6206 } else { 6207 q.mEvent.recycleIfNeededAfterDispatch(); 6208 } 6209 6210 recycleQueuedInputEvent(q); 6211 } 6212 6213 private void adjustInputEventForCompatibility(InputEvent e) { 6214 if (mTargetSdkVersion < Build.VERSION_CODES.M && e instanceof MotionEvent) { 6215 MotionEvent motion = (MotionEvent) e; 6216 final int mask = 6217 MotionEvent.BUTTON_STYLUS_PRIMARY | MotionEvent.BUTTON_STYLUS_SECONDARY; 6218 final int buttonState = motion.getButtonState(); 6219 final int compatButtonState = (buttonState & mask) >> 4; 6220 if (compatButtonState != 0) { 6221 motion.setButtonState(buttonState | compatButtonState); 6222 } 6223 } 6224 } 6225 6226 static boolean isTerminalInputEvent(InputEvent event) { 6227 if (event instanceof KeyEvent) { 6228 final KeyEvent keyEvent = (KeyEvent)event; 6229 return keyEvent.getAction() == KeyEvent.ACTION_UP; 6230 } else { 6231 final MotionEvent motionEvent = (MotionEvent)event; 6232 final int action = motionEvent.getAction(); 6233 return action == MotionEvent.ACTION_UP 6234 || action == MotionEvent.ACTION_CANCEL 6235 || action == MotionEvent.ACTION_HOVER_EXIT; 6236 } 6237 } 6238 6239 void scheduleConsumeBatchedInput() { 6240 if (!mConsumeBatchedInputScheduled) { 6241 mConsumeBatchedInputScheduled = true; 6242 mChoreographer.postCallback(Choreographer.CALLBACK_INPUT, 6243 mConsumedBatchedInputRunnable, null); 6244 } 6245 } 6246 6247 void unscheduleConsumeBatchedInput() { 6248 if (mConsumeBatchedInputScheduled) { 6249 mConsumeBatchedInputScheduled = false; 6250 mChoreographer.removeCallbacks(Choreographer.CALLBACK_INPUT, 6251 mConsumedBatchedInputRunnable, null); 6252 } 6253 } 6254 6255 void scheduleConsumeBatchedInputImmediately() { 6256 if (!mConsumeBatchedInputImmediatelyScheduled) { 6257 unscheduleConsumeBatchedInput(); 6258 mConsumeBatchedInputImmediatelyScheduled = true; 6259 mHandler.post(mConsumeBatchedInputImmediatelyRunnable); 6260 } 6261 } 6262 6263 void doConsumeBatchedInput(long frameTimeNanos) { 6264 if (mConsumeBatchedInputScheduled) { 6265 mConsumeBatchedInputScheduled = false; 6266 if (mInputEventReceiver != null) { 6267 if (mInputEventReceiver.consumeBatchedInputEvents(frameTimeNanos) 6268 && frameTimeNanos != -1) { 6269 // If we consumed a batch here, we want to go ahead and schedule the 6270 // consumption of batched input events on the next frame. Otherwise, we would 6271 // wait until we have more input events pending and might get starved by other 6272 // things occurring in the process. If the frame time is -1, however, then 6273 // we're in a non-batching mode, so there's no need to schedule this. 6274 scheduleConsumeBatchedInput(); 6275 } 6276 } 6277 doProcessInputEvents(); 6278 } 6279 } 6280 6281 final class TraversalRunnable implements Runnable { 6282 @Override 6283 public void run() { 6284 doTraversal(); 6285 } 6286 } 6287 final TraversalRunnable mTraversalRunnable = new TraversalRunnable(); 6288 6289 final class WindowInputEventReceiver extends InputEventReceiver { 6290 public WindowInputEventReceiver(InputChannel inputChannel, Looper looper) { 6291 super(inputChannel, looper); 6292 } 6293 6294 @Override 6295 public void onInputEvent(InputEvent event) { 6296 enqueueInputEvent(event, this, 0, true); 6297 } 6298 6299 @Override 6300 public void onBatchedInputEventPending() { 6301 if (mUnbufferedInputDispatch) { 6302 super.onBatchedInputEventPending(); 6303 } else { 6304 scheduleConsumeBatchedInput(); 6305 } 6306 } 6307 6308 @Override 6309 public void dispose() { 6310 unscheduleConsumeBatchedInput(); 6311 super.dispose(); 6312 } 6313 } 6314 WindowInputEventReceiver mInputEventReceiver; 6315 6316 final class ConsumeBatchedInputRunnable implements Runnable { 6317 @Override 6318 public void run() { 6319 doConsumeBatchedInput(mChoreographer.getFrameTimeNanos()); 6320 } 6321 } 6322 final ConsumeBatchedInputRunnable mConsumedBatchedInputRunnable = 6323 new ConsumeBatchedInputRunnable(); 6324 boolean mConsumeBatchedInputScheduled; 6325 6326 final class ConsumeBatchedInputImmediatelyRunnable implements Runnable { 6327 @Override 6328 public void run() { 6329 doConsumeBatchedInput(-1); 6330 } 6331 } 6332 final ConsumeBatchedInputImmediatelyRunnable mConsumeBatchedInputImmediatelyRunnable = 6333 new ConsumeBatchedInputImmediatelyRunnable(); 6334 boolean mConsumeBatchedInputImmediatelyScheduled; 6335 6336 final class InvalidateOnAnimationRunnable implements Runnable { 6337 private boolean mPosted; 6338 private final ArrayList<View> mViews = new ArrayList<View>(); 6339 private final ArrayList<AttachInfo.InvalidateInfo> mViewRects = 6340 new ArrayList<AttachInfo.InvalidateInfo>(); 6341 private View[] mTempViews; 6342 private AttachInfo.InvalidateInfo[] mTempViewRects; 6343 6344 public void addView(View view) { 6345 synchronized (this) { 6346 mViews.add(view); 6347 postIfNeededLocked(); 6348 } 6349 } 6350 6351 public void addViewRect(AttachInfo.InvalidateInfo info) { 6352 synchronized (this) { 6353 mViewRects.add(info); 6354 postIfNeededLocked(); 6355 } 6356 } 6357 6358 public void removeView(View view) { 6359 synchronized (this) { 6360 mViews.remove(view); 6361 6362 for (int i = mViewRects.size(); i-- > 0; ) { 6363 AttachInfo.InvalidateInfo info = mViewRects.get(i); 6364 if (info.target == view) { 6365 mViewRects.remove(i); 6366 info.recycle(); 6367 } 6368 } 6369 6370 if (mPosted && mViews.isEmpty() && mViewRects.isEmpty()) { 6371 mChoreographer.removeCallbacks(Choreographer.CALLBACK_ANIMATION, this, null); 6372 mPosted = false; 6373 } 6374 } 6375 } 6376 6377 @Override 6378 public void run() { 6379 final int viewCount; 6380 final int viewRectCount; 6381 synchronized (this) { 6382 mPosted = false; 6383 6384 viewCount = mViews.size(); 6385 if (viewCount != 0) { 6386 mTempViews = mViews.toArray(mTempViews != null 6387 ? mTempViews : new View[viewCount]); 6388 mViews.clear(); 6389 } 6390 6391 viewRectCount = mViewRects.size(); 6392 if (viewRectCount != 0) { 6393 mTempViewRects = mViewRects.toArray(mTempViewRects != null 6394 ? mTempViewRects : new AttachInfo.InvalidateInfo[viewRectCount]); 6395 mViewRects.clear(); 6396 } 6397 } 6398 6399 for (int i = 0; i < viewCount; i++) { 6400 mTempViews[i].invalidate(); 6401 mTempViews[i] = null; 6402 } 6403 6404 for (int i = 0; i < viewRectCount; i++) { 6405 final View.AttachInfo.InvalidateInfo info = mTempViewRects[i]; 6406 info.target.invalidate(info.left, info.top, info.right, info.bottom); 6407 info.recycle(); 6408 } 6409 } 6410 6411 private void postIfNeededLocked() { 6412 if (!mPosted) { 6413 mChoreographer.postCallback(Choreographer.CALLBACK_ANIMATION, this, null); 6414 mPosted = true; 6415 } 6416 } 6417 } 6418 final InvalidateOnAnimationRunnable mInvalidateOnAnimationRunnable = 6419 new InvalidateOnAnimationRunnable(); 6420 6421 public void dispatchInvalidateDelayed(View view, long delayMilliseconds) { 6422 Message msg = mHandler.obtainMessage(MSG_INVALIDATE, view); 6423 mHandler.sendMessageDelayed(msg, delayMilliseconds); 6424 } 6425 6426 public void dispatchInvalidateRectDelayed(AttachInfo.InvalidateInfo info, 6427 long delayMilliseconds) { 6428 final Message msg = mHandler.obtainMessage(MSG_INVALIDATE_RECT, info); 6429 mHandler.sendMessageDelayed(msg, delayMilliseconds); 6430 } 6431 6432 public void dispatchInvalidateOnAnimation(View view) { 6433 mInvalidateOnAnimationRunnable.addView(view); 6434 } 6435 6436 public void dispatchInvalidateRectOnAnimation(AttachInfo.InvalidateInfo info) { 6437 mInvalidateOnAnimationRunnable.addViewRect(info); 6438 } 6439 6440 public void cancelInvalidate(View view) { 6441 mHandler.removeMessages(MSG_INVALIDATE, view); 6442 // fixme: might leak the AttachInfo.InvalidateInfo objects instead of returning 6443 // them to the pool 6444 mHandler.removeMessages(MSG_INVALIDATE_RECT, view); 6445 mInvalidateOnAnimationRunnable.removeView(view); 6446 } 6447 6448 public void dispatchInputEvent(InputEvent event) { 6449 dispatchInputEvent(event, null); 6450 } 6451 6452 public void dispatchInputEvent(InputEvent event, InputEventReceiver receiver) { 6453 SomeArgs args = SomeArgs.obtain(); 6454 args.arg1 = event; 6455 args.arg2 = receiver; 6456 Message msg = mHandler.obtainMessage(MSG_DISPATCH_INPUT_EVENT, args); 6457 msg.setAsynchronous(true); 6458 mHandler.sendMessage(msg); 6459 } 6460 6461 public void synthesizeInputEvent(InputEvent event) { 6462 Message msg = mHandler.obtainMessage(MSG_SYNTHESIZE_INPUT_EVENT, event); 6463 msg.setAsynchronous(true); 6464 mHandler.sendMessage(msg); 6465 } 6466 6467 public void dispatchKeyFromIme(KeyEvent event) { 6468 Message msg = mHandler.obtainMessage(MSG_DISPATCH_KEY_FROM_IME, event); 6469 msg.setAsynchronous(true); 6470 mHandler.sendMessage(msg); 6471 } 6472 6473 /** 6474 * Reinject unhandled {@link InputEvent}s in order to synthesize fallbacks events. 6475 * 6476 * Note that it is the responsibility of the caller of this API to recycle the InputEvent it 6477 * passes in. 6478 */ 6479 public void dispatchUnhandledInputEvent(InputEvent event) { 6480 if (event instanceof MotionEvent) { 6481 event = MotionEvent.obtain((MotionEvent) event); 6482 } 6483 synthesizeInputEvent(event); 6484 } 6485 6486 public void dispatchAppVisibility(boolean visible) { 6487 Message msg = mHandler.obtainMessage(MSG_DISPATCH_APP_VISIBILITY); 6488 msg.arg1 = visible ? 1 : 0; 6489 mHandler.sendMessage(msg); 6490 } 6491 6492 public void dispatchGetNewSurface() { 6493 Message msg = mHandler.obtainMessage(MSG_DISPATCH_GET_NEW_SURFACE); 6494 mHandler.sendMessage(msg); 6495 } 6496 6497 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 6498 Message msg = Message.obtain(); 6499 msg.what = MSG_WINDOW_FOCUS_CHANGED; 6500 msg.arg1 = hasFocus ? 1 : 0; 6501 msg.arg2 = inTouchMode ? 1 : 0; 6502 mHandler.sendMessage(msg); 6503 } 6504 6505 public void dispatchWindowShown() { 6506 mHandler.sendEmptyMessage(MSG_DISPATCH_WINDOW_SHOWN); 6507 } 6508 6509 public void dispatchCloseSystemDialogs(String reason) { 6510 Message msg = Message.obtain(); 6511 msg.what = MSG_CLOSE_SYSTEM_DIALOGS; 6512 msg.obj = reason; 6513 mHandler.sendMessage(msg); 6514 } 6515 6516 public void dispatchDragEvent(DragEvent event) { 6517 final int what; 6518 if (event.getAction() == DragEvent.ACTION_DRAG_LOCATION) { 6519 what = MSG_DISPATCH_DRAG_LOCATION_EVENT; 6520 mHandler.removeMessages(what); 6521 } else { 6522 what = MSG_DISPATCH_DRAG_EVENT; 6523 } 6524 Message msg = mHandler.obtainMessage(what, event); 6525 mHandler.sendMessage(msg); 6526 } 6527 6528 public void updatePointerIcon(float x, float y) { 6529 final int what = MSG_UPDATE_POINTER_ICON; 6530 mHandler.removeMessages(what); 6531 final long now = SystemClock.uptimeMillis(); 6532 final MotionEvent event = MotionEvent.obtain( 6533 0, now, MotionEvent.ACTION_HOVER_MOVE, x, y, 0); 6534 Message msg = mHandler.obtainMessage(what, event); 6535 mHandler.sendMessage(msg); 6536 } 6537 6538 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 6539 int localValue, int localChanges) { 6540 SystemUiVisibilityInfo args = new SystemUiVisibilityInfo(); 6541 args.seq = seq; 6542 args.globalVisibility = globalVisibility; 6543 args.localValue = localValue; 6544 args.localChanges = localChanges; 6545 mHandler.sendMessage(mHandler.obtainMessage(MSG_DISPATCH_SYSTEM_UI_VISIBILITY, args)); 6546 } 6547 6548 public void dispatchCheckFocus() { 6549 if (!mHandler.hasMessages(MSG_CHECK_FOCUS)) { 6550 // This will result in a call to checkFocus() below. 6551 mHandler.sendEmptyMessage(MSG_CHECK_FOCUS); 6552 } 6553 } 6554 6555 public void dispatchRequestKeyboardShortcuts(IResultReceiver receiver, int deviceId) { 6556 mHandler.obtainMessage( 6557 MSG_REQUEST_KEYBOARD_SHORTCUTS, deviceId, 0, receiver).sendToTarget(); 6558 } 6559 6560 /** 6561 * Post a callback to send a 6562 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 6563 * This event is send at most once every 6564 * {@link ViewConfiguration#getSendRecurringAccessibilityEventsInterval()}. 6565 */ 6566 private void postSendWindowContentChangedCallback(View source, int changeType) { 6567 if (mSendWindowContentChangedAccessibilityEvent == null) { 6568 mSendWindowContentChangedAccessibilityEvent = 6569 new SendWindowContentChangedAccessibilityEvent(); 6570 } 6571 mSendWindowContentChangedAccessibilityEvent.runOrPost(source, changeType); 6572 } 6573 6574 /** 6575 * Remove a posted callback to send a 6576 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 6577 */ 6578 private void removeSendWindowContentChangedCallback() { 6579 if (mSendWindowContentChangedAccessibilityEvent != null) { 6580 mHandler.removeCallbacks(mSendWindowContentChangedAccessibilityEvent); 6581 } 6582 } 6583 6584 @Override 6585 public boolean showContextMenuForChild(View originalView) { 6586 return false; 6587 } 6588 6589 @Override 6590 public boolean showContextMenuForChild(View originalView, float x, float y) { 6591 return false; 6592 } 6593 6594 @Override 6595 public ActionMode startActionModeForChild(View originalView, ActionMode.Callback callback) { 6596 return null; 6597 } 6598 6599 @Override 6600 public ActionMode startActionModeForChild( 6601 View originalView, ActionMode.Callback callback, int type) { 6602 return null; 6603 } 6604 6605 @Override 6606 public void createContextMenu(ContextMenu menu) { 6607 } 6608 6609 @Override 6610 public void childDrawableStateChanged(View child) { 6611 } 6612 6613 @Override 6614 public boolean requestSendAccessibilityEvent(View child, AccessibilityEvent event) { 6615 if (mView == null || mStopped || mPausedForTransition) { 6616 return false; 6617 } 6618 // Intercept accessibility focus events fired by virtual nodes to keep 6619 // track of accessibility focus position in such nodes. 6620 final int eventType = event.getEventType(); 6621 switch (eventType) { 6622 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUSED: { 6623 final long sourceNodeId = event.getSourceNodeId(); 6624 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 6625 sourceNodeId); 6626 View source = mView.findViewByAccessibilityId(accessibilityViewId); 6627 if (source != null) { 6628 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 6629 if (provider != null) { 6630 final int virtualNodeId = AccessibilityNodeInfo.getVirtualDescendantId( 6631 sourceNodeId); 6632 final AccessibilityNodeInfo node; 6633 if (virtualNodeId == AccessibilityNodeInfo.UNDEFINED_ITEM_ID) { 6634 node = provider.createAccessibilityNodeInfo( 6635 AccessibilityNodeProvider.HOST_VIEW_ID); 6636 } else { 6637 node = provider.createAccessibilityNodeInfo(virtualNodeId); 6638 } 6639 setAccessibilityFocus(source, node); 6640 } 6641 } 6642 } break; 6643 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUS_CLEARED: { 6644 final long sourceNodeId = event.getSourceNodeId(); 6645 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 6646 sourceNodeId); 6647 View source = mView.findViewByAccessibilityId(accessibilityViewId); 6648 if (source != null) { 6649 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 6650 if (provider != null) { 6651 setAccessibilityFocus(null, null); 6652 } 6653 } 6654 } break; 6655 6656 6657 case AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED: { 6658 handleWindowContentChangedEvent(event); 6659 } break; 6660 } 6661 mAccessibilityManager.sendAccessibilityEvent(event); 6662 return true; 6663 } 6664 6665 /** 6666 * Updates the focused virtual view, when necessary, in response to a 6667 * content changed event. 6668 * <p> 6669 * This is necessary to get updated bounds after a position change. 6670 * 6671 * @param event an accessibility event of type 6672 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} 6673 */ 6674 private void handleWindowContentChangedEvent(AccessibilityEvent event) { 6675 final View focusedHost = mAccessibilityFocusedHost; 6676 if (focusedHost == null || mAccessibilityFocusedVirtualView == null) { 6677 // No virtual view focused, nothing to do here. 6678 return; 6679 } 6680 6681 final AccessibilityNodeProvider provider = focusedHost.getAccessibilityNodeProvider(); 6682 if (provider == null) { 6683 // Error state: virtual view with no provider. Clear focus. 6684 mAccessibilityFocusedHost = null; 6685 mAccessibilityFocusedVirtualView = null; 6686 focusedHost.clearAccessibilityFocusNoCallbacks(0); 6687 return; 6688 } 6689 6690 // We only care about change types that may affect the bounds of the 6691 // focused virtual view. 6692 final int changes = event.getContentChangeTypes(); 6693 if ((changes & AccessibilityEvent.CONTENT_CHANGE_TYPE_SUBTREE) == 0 6694 && changes != AccessibilityEvent.CONTENT_CHANGE_TYPE_UNDEFINED) { 6695 return; 6696 } 6697 6698 final long eventSourceNodeId = event.getSourceNodeId(); 6699 final int changedViewId = AccessibilityNodeInfo.getAccessibilityViewId(eventSourceNodeId); 6700 6701 // Search up the tree for subtree containment. 6702 boolean hostInSubtree = false; 6703 View root = mAccessibilityFocusedHost; 6704 while (root != null && !hostInSubtree) { 6705 if (changedViewId == root.getAccessibilityViewId()) { 6706 hostInSubtree = true; 6707 } else { 6708 final ViewParent parent = root.getParent(); 6709 if (parent instanceof View) { 6710 root = (View) parent; 6711 } else { 6712 root = null; 6713 } 6714 } 6715 } 6716 6717 // We care only about changes in subtrees containing the host view. 6718 if (!hostInSubtree) { 6719 return; 6720 } 6721 6722 final long focusedSourceNodeId = mAccessibilityFocusedVirtualView.getSourceNodeId(); 6723 int focusedChildId = AccessibilityNodeInfo.getVirtualDescendantId(focusedSourceNodeId); 6724 if (focusedChildId == AccessibilityNodeInfo.UNDEFINED_ITEM_ID) { 6725 // TODO: Should we clear the focused virtual view? 6726 focusedChildId = AccessibilityNodeProvider.HOST_VIEW_ID; 6727 } 6728 6729 // Refresh the node for the focused virtual view. 6730 final Rect oldBounds = mTempRect; 6731 mAccessibilityFocusedVirtualView.getBoundsInScreen(oldBounds); 6732 mAccessibilityFocusedVirtualView = provider.createAccessibilityNodeInfo(focusedChildId); 6733 if (mAccessibilityFocusedVirtualView == null) { 6734 // Error state: The node no longer exists. Clear focus. 6735 mAccessibilityFocusedHost = null; 6736 focusedHost.clearAccessibilityFocusNoCallbacks(0); 6737 6738 // This will probably fail, but try to keep the provider's internal 6739 // state consistent by clearing focus. 6740 provider.performAction(focusedChildId, 6741 AccessibilityAction.ACTION_CLEAR_ACCESSIBILITY_FOCUS.getId(), null); 6742 invalidateRectOnScreen(oldBounds); 6743 } else { 6744 // The node was refreshed, invalidate bounds if necessary. 6745 final Rect newBounds = mAccessibilityFocusedVirtualView.getBoundsInScreen(); 6746 if (!oldBounds.equals(newBounds)) { 6747 oldBounds.union(newBounds); 6748 invalidateRectOnScreen(oldBounds); 6749 } 6750 } 6751 } 6752 6753 @Override 6754 public void notifySubtreeAccessibilityStateChanged(View child, View source, int changeType) { 6755 postSendWindowContentChangedCallback(source, changeType); 6756 } 6757 6758 @Override 6759 public boolean canResolveLayoutDirection() { 6760 return true; 6761 } 6762 6763 @Override 6764 public boolean isLayoutDirectionResolved() { 6765 return true; 6766 } 6767 6768 @Override 6769 public int getLayoutDirection() { 6770 return View.LAYOUT_DIRECTION_RESOLVED_DEFAULT; 6771 } 6772 6773 @Override 6774 public boolean canResolveTextDirection() { 6775 return true; 6776 } 6777 6778 @Override 6779 public boolean isTextDirectionResolved() { 6780 return true; 6781 } 6782 6783 @Override 6784 public int getTextDirection() { 6785 return View.TEXT_DIRECTION_RESOLVED_DEFAULT; 6786 } 6787 6788 @Override 6789 public boolean canResolveTextAlignment() { 6790 return true; 6791 } 6792 6793 @Override 6794 public boolean isTextAlignmentResolved() { 6795 return true; 6796 } 6797 6798 @Override 6799 public int getTextAlignment() { 6800 return View.TEXT_ALIGNMENT_RESOLVED_DEFAULT; 6801 } 6802 6803 private View getCommonPredecessor(View first, View second) { 6804 if (mTempHashSet == null) { 6805 mTempHashSet = new HashSet<View>(); 6806 } 6807 HashSet<View> seen = mTempHashSet; 6808 seen.clear(); 6809 View firstCurrent = first; 6810 while (firstCurrent != null) { 6811 seen.add(firstCurrent); 6812 ViewParent firstCurrentParent = firstCurrent.mParent; 6813 if (firstCurrentParent instanceof View) { 6814 firstCurrent = (View) firstCurrentParent; 6815 } else { 6816 firstCurrent = null; 6817 } 6818 } 6819 View secondCurrent = second; 6820 while (secondCurrent != null) { 6821 if (seen.contains(secondCurrent)) { 6822 seen.clear(); 6823 return secondCurrent; 6824 } 6825 ViewParent secondCurrentParent = secondCurrent.mParent; 6826 if (secondCurrentParent instanceof View) { 6827 secondCurrent = (View) secondCurrentParent; 6828 } else { 6829 secondCurrent = null; 6830 } 6831 } 6832 seen.clear(); 6833 return null; 6834 } 6835 6836 void checkThread() { 6837 if (mThread != Thread.currentThread()) { 6838 throw new CalledFromWrongThreadException( 6839 "Only the original thread that created a view hierarchy can touch its views."); 6840 } 6841 } 6842 6843 @Override 6844 public void requestDisallowInterceptTouchEvent(boolean disallowIntercept) { 6845 // ViewAncestor never intercepts touch event, so this can be a no-op 6846 } 6847 6848 @Override 6849 public boolean requestChildRectangleOnScreen(View child, Rect rectangle, boolean immediate) { 6850 if (rectangle == null) { 6851 return scrollToRectOrFocus(null, immediate); 6852 } 6853 rectangle.offset(child.getLeft() - child.getScrollX(), 6854 child.getTop() - child.getScrollY()); 6855 final boolean scrolled = scrollToRectOrFocus(rectangle, immediate); 6856 mTempRect.set(rectangle); 6857 mTempRect.offset(0, -mCurScrollY); 6858 mTempRect.offset(mAttachInfo.mWindowLeft, mAttachInfo.mWindowTop); 6859 try { 6860 mWindowSession.onRectangleOnScreenRequested(mWindow, mTempRect); 6861 } catch (RemoteException re) { 6862 /* ignore */ 6863 } 6864 return scrolled; 6865 } 6866 6867 @Override 6868 public void childHasTransientStateChanged(View child, boolean hasTransientState) { 6869 // Do nothing. 6870 } 6871 6872 @Override 6873 public boolean onStartNestedScroll(View child, View target, int nestedScrollAxes) { 6874 return false; 6875 } 6876 6877 @Override 6878 public void onStopNestedScroll(View target) { 6879 } 6880 6881 @Override 6882 public void onNestedScrollAccepted(View child, View target, int nestedScrollAxes) { 6883 } 6884 6885 @Override 6886 public void onNestedScroll(View target, int dxConsumed, int dyConsumed, 6887 int dxUnconsumed, int dyUnconsumed) { 6888 } 6889 6890 @Override 6891 public void onNestedPreScroll(View target, int dx, int dy, int[] consumed) { 6892 } 6893 6894 @Override 6895 public boolean onNestedFling(View target, float velocityX, float velocityY, boolean consumed) { 6896 return false; 6897 } 6898 6899 @Override 6900 public boolean onNestedPreFling(View target, float velocityX, float velocityY) { 6901 return false; 6902 } 6903 6904 @Override 6905 public boolean onNestedPrePerformAccessibilityAction(View target, int action, Bundle args) { 6906 return false; 6907 } 6908 6909 /** 6910 * Force the window to report its next draw. 6911 * <p> 6912 * This method is only supposed to be used to speed up the interaction from SystemUI and window 6913 * manager when waiting for the first frame to be drawn when turning on the screen. DO NOT USE 6914 * unless you fully understand this interaction. 6915 * @hide 6916 */ 6917 public void setReportNextDraw() { 6918 mReportNextDraw = true; 6919 invalidate(); 6920 } 6921 6922 void changeCanvasOpacity(boolean opaque) { 6923 Log.d(mTag, "changeCanvasOpacity: opaque=" + opaque); 6924 if (mAttachInfo.mHardwareRenderer != null) { 6925 mAttachInfo.mHardwareRenderer.setOpaque(opaque); 6926 } 6927 } 6928 6929 class TakenSurfaceHolder extends BaseSurfaceHolder { 6930 @Override 6931 public boolean onAllowLockCanvas() { 6932 return mDrawingAllowed; 6933 } 6934 6935 @Override 6936 public void onRelayoutContainer() { 6937 // Not currently interesting -- from changing between fixed and layout size. 6938 } 6939 6940 @Override 6941 public void setFormat(int format) { 6942 ((RootViewSurfaceTaker)mView).setSurfaceFormat(format); 6943 } 6944 6945 @Override 6946 public void setType(int type) { 6947 ((RootViewSurfaceTaker)mView).setSurfaceType(type); 6948 } 6949 6950 @Override 6951 public void onUpdateSurface() { 6952 // We take care of format and type changes on our own. 6953 throw new IllegalStateException("Shouldn't be here"); 6954 } 6955 6956 @Override 6957 public boolean isCreating() { 6958 return mIsCreating; 6959 } 6960 6961 @Override 6962 public void setFixedSize(int width, int height) { 6963 throw new UnsupportedOperationException( 6964 "Currently only support sizing from layout"); 6965 } 6966 6967 @Override 6968 public void setKeepScreenOn(boolean screenOn) { 6969 ((RootViewSurfaceTaker)mView).setSurfaceKeepScreenOn(screenOn); 6970 } 6971 } 6972 6973 static class W extends IWindow.Stub { 6974 private final WeakReference<ViewRootImpl> mViewAncestor; 6975 private final IWindowSession mWindowSession; 6976 6977 W(ViewRootImpl viewAncestor) { 6978 mViewAncestor = new WeakReference<ViewRootImpl>(viewAncestor); 6979 mWindowSession = viewAncestor.mWindowSession; 6980 } 6981 6982 @Override 6983 public void resized(Rect frame, Rect overscanInsets, Rect contentInsets, 6984 Rect visibleInsets, Rect stableInsets, Rect outsets, boolean reportDraw, 6985 Configuration newConfig, Rect backDropFrame, boolean forceLayout, 6986 boolean alwaysConsumeNavBar) { 6987 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6988 if (viewAncestor != null) { 6989 viewAncestor.dispatchResized(frame, overscanInsets, contentInsets, 6990 visibleInsets, stableInsets, outsets, reportDraw, newConfig, backDropFrame, 6991 forceLayout, alwaysConsumeNavBar); 6992 } 6993 } 6994 6995 @Override 6996 public void moved(int newX, int newY) { 6997 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6998 if (viewAncestor != null) { 6999 viewAncestor.dispatchMoved(newX, newY); 7000 } 7001 } 7002 7003 @Override 7004 public void dispatchAppVisibility(boolean visible) { 7005 final ViewRootImpl viewAncestor = mViewAncestor.get(); 7006 if (viewAncestor != null) { 7007 viewAncestor.dispatchAppVisibility(visible); 7008 } 7009 } 7010 7011 @Override 7012 public void dispatchGetNewSurface() { 7013 final ViewRootImpl viewAncestor = mViewAncestor.get(); 7014 if (viewAncestor != null) { 7015 viewAncestor.dispatchGetNewSurface(); 7016 } 7017 } 7018 7019 @Override 7020 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 7021 final ViewRootImpl viewAncestor = mViewAncestor.get(); 7022 if (viewAncestor != null) { 7023 viewAncestor.windowFocusChanged(hasFocus, inTouchMode); 7024 } 7025 } 7026 7027 private static int checkCallingPermission(String permission) { 7028 try { 7029 return ActivityManagerNative.getDefault().checkPermission( 7030 permission, Binder.getCallingPid(), Binder.getCallingUid()); 7031 } catch (RemoteException e) { 7032 return PackageManager.PERMISSION_DENIED; 7033 } 7034 } 7035 7036 @Override 7037 public void executeCommand(String command, String parameters, ParcelFileDescriptor out) { 7038 final ViewRootImpl viewAncestor = mViewAncestor.get(); 7039 if (viewAncestor != null) { 7040 final View view = viewAncestor.mView; 7041 if (view != null) { 7042 if (checkCallingPermission(Manifest.permission.DUMP) != 7043 PackageManager.PERMISSION_GRANTED) { 7044 throw new SecurityException("Insufficient permissions to invoke" 7045 + " executeCommand() from pid=" + Binder.getCallingPid() 7046 + ", uid=" + Binder.getCallingUid()); 7047 } 7048 7049 OutputStream clientStream = null; 7050 try { 7051 clientStream = new ParcelFileDescriptor.AutoCloseOutputStream(out); 7052 ViewDebug.dispatchCommand(view, command, parameters, clientStream); 7053 } catch (IOException e) { 7054 e.printStackTrace(); 7055 } finally { 7056 if (clientStream != null) { 7057 try { 7058 clientStream.close(); 7059 } catch (IOException e) { 7060 e.printStackTrace(); 7061 } 7062 } 7063 } 7064 } 7065 } 7066 } 7067 7068 @Override 7069 public void closeSystemDialogs(String reason) { 7070 final ViewRootImpl viewAncestor = mViewAncestor.get(); 7071 if (viewAncestor != null) { 7072 viewAncestor.dispatchCloseSystemDialogs(reason); 7073 } 7074 } 7075 7076 @Override 7077 public void dispatchWallpaperOffsets(float x, float y, float xStep, float yStep, 7078 boolean sync) { 7079 if (sync) { 7080 try { 7081 mWindowSession.wallpaperOffsetsComplete(asBinder()); 7082 } catch (RemoteException e) { 7083 } 7084 } 7085 } 7086 7087 @Override 7088 public void dispatchWallpaperCommand(String action, int x, int y, 7089 int z, Bundle extras, boolean sync) { 7090 if (sync) { 7091 try { 7092 mWindowSession.wallpaperCommandComplete(asBinder(), null); 7093 } catch (RemoteException e) { 7094 } 7095 } 7096 } 7097 7098 /* Drag/drop */ 7099 @Override 7100 public void dispatchDragEvent(DragEvent event) { 7101 final ViewRootImpl viewAncestor = mViewAncestor.get(); 7102 if (viewAncestor != null) { 7103 viewAncestor.dispatchDragEvent(event); 7104 } 7105 } 7106 7107 @Override 7108 public void updatePointerIcon(float x, float y) { 7109 final ViewRootImpl viewAncestor = mViewAncestor.get(); 7110 if (viewAncestor != null) { 7111 viewAncestor.updatePointerIcon(x, y); 7112 } 7113 } 7114 7115 @Override 7116 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 7117 int localValue, int localChanges) { 7118 final ViewRootImpl viewAncestor = mViewAncestor.get(); 7119 if (viewAncestor != null) { 7120 viewAncestor.dispatchSystemUiVisibilityChanged(seq, globalVisibility, 7121 localValue, localChanges); 7122 } 7123 } 7124 7125 @Override 7126 public void dispatchWindowShown() { 7127 final ViewRootImpl viewAncestor = mViewAncestor.get(); 7128 if (viewAncestor != null) { 7129 viewAncestor.dispatchWindowShown(); 7130 } 7131 } 7132 7133 @Override 7134 public void requestAppKeyboardShortcuts(IResultReceiver receiver, int deviceId) { 7135 ViewRootImpl viewAncestor = mViewAncestor.get(); 7136 if (viewAncestor != null) { 7137 viewAncestor.dispatchRequestKeyboardShortcuts(receiver, deviceId); 7138 } 7139 } 7140 } 7141 7142 public static final class CalledFromWrongThreadException extends AndroidRuntimeException { 7143 public CalledFromWrongThreadException(String msg) { 7144 super(msg); 7145 } 7146 } 7147 7148 static HandlerActionQueue getRunQueue() { 7149 HandlerActionQueue rq = sRunQueues.get(); 7150 if (rq != null) { 7151 return rq; 7152 } 7153 rq = new HandlerActionQueue(); 7154 sRunQueues.set(rq); 7155 return rq; 7156 } 7157 7158 /** 7159 * Start a drag resizing which will inform all listeners that a window resize is taking place. 7160 */ 7161 private void startDragResizing(Rect initialBounds, boolean fullscreen, Rect systemInsets, 7162 Rect stableInsets, int resizeMode) { 7163 if (!mDragResizing) { 7164 mDragResizing = true; 7165 for (int i = mWindowCallbacks.size() - 1; i >= 0; i--) { 7166 mWindowCallbacks.get(i).onWindowDragResizeStart(initialBounds, fullscreen, 7167 systemInsets, stableInsets, resizeMode); 7168 } 7169 mFullRedrawNeeded = true; 7170 } 7171 } 7172 7173 /** 7174 * End a drag resize which will inform all listeners that a window resize has ended. 7175 */ 7176 private void endDragResizing() { 7177 if (mDragResizing) { 7178 mDragResizing = false; 7179 for (int i = mWindowCallbacks.size() - 1; i >= 0; i--) { 7180 mWindowCallbacks.get(i).onWindowDragResizeEnd(); 7181 } 7182 mFullRedrawNeeded = true; 7183 } 7184 } 7185 7186 private boolean updateContentDrawBounds() { 7187 boolean updated = false; 7188 for (int i = mWindowCallbacks.size() - 1; i >= 0; i--) { 7189 updated |= mWindowCallbacks.get(i).onContentDrawn( 7190 mWindowAttributes.surfaceInsets.left, 7191 mWindowAttributes.surfaceInsets.top, 7192 mWidth, mHeight); 7193 } 7194 return updated | (mDragResizing && mReportNextDraw); 7195 } 7196 7197 private void requestDrawWindow() { 7198 if (mReportNextDraw) { 7199 mWindowDrawCountDown = new CountDownLatch(mWindowCallbacks.size()); 7200 } 7201 for (int i = mWindowCallbacks.size() - 1; i >= 0; i--) { 7202 mWindowCallbacks.get(i).onRequestDraw(mReportNextDraw); 7203 } 7204 } 7205 7206 /** 7207 * Tells this instance that its corresponding activity has just relaunched. In this case, we 7208 * need to force a relayout of the window to make sure we get the correct bounds from window 7209 * manager. 7210 */ 7211 public void reportActivityRelaunched() { 7212 mActivityRelaunched = true; 7213 } 7214 7215 /** 7216 * Class for managing the accessibility interaction connection 7217 * based on the global accessibility state. 7218 */ 7219 final class AccessibilityInteractionConnectionManager 7220 implements AccessibilityStateChangeListener { 7221 @Override 7222 public void onAccessibilityStateChanged(boolean enabled) { 7223 if (enabled) { 7224 ensureConnection(); 7225 if (mAttachInfo.mHasWindowFocus) { 7226 mView.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 7227 View focusedView = mView.findFocus(); 7228 if (focusedView != null && focusedView != mView) { 7229 focusedView.sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_FOCUSED); 7230 } 7231 } 7232 } else { 7233 ensureNoConnection(); 7234 mHandler.obtainMessage(MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST).sendToTarget(); 7235 } 7236 } 7237 7238 public void ensureConnection() { 7239 final boolean registered = 7240 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED_ITEM_ID; 7241 if (!registered) { 7242 mAttachInfo.mAccessibilityWindowId = 7243 mAccessibilityManager.addAccessibilityInteractionConnection(mWindow, 7244 new AccessibilityInteractionConnection(ViewRootImpl.this)); 7245 } 7246 } 7247 7248 public void ensureNoConnection() { 7249 final boolean registered = 7250 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED_ITEM_ID; 7251 if (registered) { 7252 mAttachInfo.mAccessibilityWindowId = AccessibilityNodeInfo.UNDEFINED_ITEM_ID; 7253 mAccessibilityManager.removeAccessibilityInteractionConnection(mWindow); 7254 } 7255 } 7256 } 7257 7258 final class HighContrastTextManager implements HighTextContrastChangeListener { 7259 HighContrastTextManager() { 7260 mAttachInfo.mHighContrastText = mAccessibilityManager.isHighTextContrastEnabled(); 7261 } 7262 @Override 7263 public void onHighTextContrastStateChanged(boolean enabled) { 7264 mAttachInfo.mHighContrastText = enabled; 7265 7266 // Destroy Displaylists so they can be recreated with high contrast recordings 7267 destroyHardwareResources(); 7268 7269 // Schedule redraw, which will rerecord + redraw all text 7270 invalidate(); 7271 } 7272 } 7273 7274 /** 7275 * This class is an interface this ViewAncestor provides to the 7276 * AccessibilityManagerService to the latter can interact with 7277 * the view hierarchy in this ViewAncestor. 7278 */ 7279 static final class AccessibilityInteractionConnection 7280 extends IAccessibilityInteractionConnection.Stub { 7281 private final WeakReference<ViewRootImpl> mViewRootImpl; 7282 7283 AccessibilityInteractionConnection(ViewRootImpl viewRootImpl) { 7284 mViewRootImpl = new WeakReference<ViewRootImpl>(viewRootImpl); 7285 } 7286 7287 @Override 7288 public void findAccessibilityNodeInfoByAccessibilityId(long accessibilityNodeId, 7289 Region interactiveRegion, int interactionId, 7290 IAccessibilityInteractionConnectionCallback callback, int flags, 7291 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 7292 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 7293 if (viewRootImpl != null && viewRootImpl.mView != null) { 7294 viewRootImpl.getAccessibilityInteractionController() 7295 .findAccessibilityNodeInfoByAccessibilityIdClientThread(accessibilityNodeId, 7296 interactiveRegion, interactionId, callback, flags, interrogatingPid, 7297 interrogatingTid, spec); 7298 } else { 7299 // We cannot make the call and notify the caller so it does not wait. 7300 try { 7301 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 7302 } catch (RemoteException re) { 7303 /* best effort - ignore */ 7304 } 7305 } 7306 } 7307 7308 @Override 7309 public void performAccessibilityAction(long accessibilityNodeId, int action, 7310 Bundle arguments, int interactionId, 7311 IAccessibilityInteractionConnectionCallback callback, int flags, 7312 int interrogatingPid, long interrogatingTid) { 7313 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 7314 if (viewRootImpl != null && viewRootImpl.mView != null) { 7315 viewRootImpl.getAccessibilityInteractionController() 7316 .performAccessibilityActionClientThread(accessibilityNodeId, action, arguments, 7317 interactionId, callback, flags, interrogatingPid, interrogatingTid); 7318 } else { 7319 // We cannot make the call and notify the caller so it does not wait. 7320 try { 7321 callback.setPerformAccessibilityActionResult(false, interactionId); 7322 } catch (RemoteException re) { 7323 /* best effort - ignore */ 7324 } 7325 } 7326 } 7327 7328 @Override 7329 public void findAccessibilityNodeInfosByViewId(long accessibilityNodeId, 7330 String viewId, Region interactiveRegion, int interactionId, 7331 IAccessibilityInteractionConnectionCallback callback, int flags, 7332 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 7333 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 7334 if (viewRootImpl != null && viewRootImpl.mView != null) { 7335 viewRootImpl.getAccessibilityInteractionController() 7336 .findAccessibilityNodeInfosByViewIdClientThread(accessibilityNodeId, 7337 viewId, interactiveRegion, interactionId, callback, flags, 7338 interrogatingPid, interrogatingTid, spec); 7339 } else { 7340 // We cannot make the call and notify the caller so it does not wait. 7341 try { 7342 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 7343 } catch (RemoteException re) { 7344 /* best effort - ignore */ 7345 } 7346 } 7347 } 7348 7349 @Override 7350 public void findAccessibilityNodeInfosByText(long accessibilityNodeId, String text, 7351 Region interactiveRegion, int interactionId, 7352 IAccessibilityInteractionConnectionCallback callback, int flags, 7353 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 7354 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 7355 if (viewRootImpl != null && viewRootImpl.mView != null) { 7356 viewRootImpl.getAccessibilityInteractionController() 7357 .findAccessibilityNodeInfosByTextClientThread(accessibilityNodeId, text, 7358 interactiveRegion, interactionId, callback, flags, interrogatingPid, 7359 interrogatingTid, spec); 7360 } else { 7361 // We cannot make the call and notify the caller so it does not wait. 7362 try { 7363 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 7364 } catch (RemoteException re) { 7365 /* best effort - ignore */ 7366 } 7367 } 7368 } 7369 7370 @Override 7371 public void findFocus(long accessibilityNodeId, int focusType, Region interactiveRegion, 7372 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 7373 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 7374 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 7375 if (viewRootImpl != null && viewRootImpl.mView != null) { 7376 viewRootImpl.getAccessibilityInteractionController() 7377 .findFocusClientThread(accessibilityNodeId, focusType, interactiveRegion, 7378 interactionId, callback, flags, interrogatingPid, interrogatingTid, 7379 spec); 7380 } else { 7381 // We cannot make the call and notify the caller so it does not wait. 7382 try { 7383 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 7384 } catch (RemoteException re) { 7385 /* best effort - ignore */ 7386 } 7387 } 7388 } 7389 7390 @Override 7391 public void focusSearch(long accessibilityNodeId, int direction, Region interactiveRegion, 7392 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 7393 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 7394 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 7395 if (viewRootImpl != null && viewRootImpl.mView != null) { 7396 viewRootImpl.getAccessibilityInteractionController() 7397 .focusSearchClientThread(accessibilityNodeId, direction, interactiveRegion, 7398 interactionId, callback, flags, interrogatingPid, interrogatingTid, 7399 spec); 7400 } else { 7401 // We cannot make the call and notify the caller so it does not wait. 7402 try { 7403 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 7404 } catch (RemoteException re) { 7405 /* best effort - ignore */ 7406 } 7407 } 7408 } 7409 } 7410 7411 private class SendWindowContentChangedAccessibilityEvent implements Runnable { 7412 private int mChangeTypes = 0; 7413 7414 public View mSource; 7415 public long mLastEventTimeMillis; 7416 7417 @Override 7418 public void run() { 7419 // The accessibility may be turned off while we were waiting so check again. 7420 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 7421 mLastEventTimeMillis = SystemClock.uptimeMillis(); 7422 AccessibilityEvent event = AccessibilityEvent.obtain(); 7423 event.setEventType(AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED); 7424 event.setContentChangeTypes(mChangeTypes); 7425 mSource.sendAccessibilityEventUnchecked(event); 7426 } else { 7427 mLastEventTimeMillis = 0; 7428 } 7429 // In any case reset to initial state. 7430 mSource.resetSubtreeAccessibilityStateChanged(); 7431 mSource = null; 7432 mChangeTypes = 0; 7433 } 7434 7435 public void runOrPost(View source, int changeType) { 7436 if (mSource != null) { 7437 // If there is no common predecessor, then mSource points to 7438 // a removed view, hence in this case always prefer the source. 7439 View predecessor = getCommonPredecessor(mSource, source); 7440 mSource = (predecessor != null) ? predecessor : source; 7441 mChangeTypes |= changeType; 7442 return; 7443 } 7444 mSource = source; 7445 mChangeTypes = changeType; 7446 final long timeSinceLastMillis = SystemClock.uptimeMillis() - mLastEventTimeMillis; 7447 final long minEventIntevalMillis = 7448 ViewConfiguration.getSendRecurringAccessibilityEventsInterval(); 7449 if (timeSinceLastMillis >= minEventIntevalMillis) { 7450 mSource.removeCallbacks(this); 7451 run(); 7452 } else { 7453 mSource.postDelayed(this, minEventIntevalMillis - timeSinceLastMillis); 7454 } 7455 } 7456 } 7457} 7458