ViewRootImpl.java revision 246c209e4fe704c0745224be0ab05225e8431d11
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.InputConnection; 84import android.view.inputmethod.InputMethodManager; 85import android.widget.Scroller; 86 87import com.android.internal.R; 88import com.android.internal.annotations.GuardedBy; 89import com.android.internal.os.IResultReceiver; 90import com.android.internal.os.SomeArgs; 91import com.android.internal.policy.PhoneFallbackEventHandler; 92import com.android.internal.view.BaseSurfaceHolder; 93import com.android.internal.view.RootViewSurfaceTaker; 94 95import java.io.FileDescriptor; 96import java.io.IOException; 97import java.io.OutputStream; 98import java.io.PrintWriter; 99import java.lang.ref.WeakReference; 100import java.util.ArrayList; 101import java.util.HashSet; 102import java.util.concurrent.CountDownLatch; 103 104/** 105 * The top of a view hierarchy, implementing the needed protocol between View 106 * and the WindowManager. This is for the most part an internal implementation 107 * detail of {@link WindowManagerGlobal}. 108 * 109 * {@hide} 110 */ 111@SuppressWarnings({"EmptyCatchBlock", "PointlessBooleanExpression"}) 112public final class ViewRootImpl implements ViewParent, 113 View.AttachInfo.Callbacks, ThreadedRenderer.HardwareDrawCallbacks { 114 private static final String TAG = "ViewRootImpl"; 115 private static final boolean DBG = false; 116 private static final boolean LOCAL_LOGV = false; 117 /** @noinspection PointlessBooleanExpression*/ 118 private static final boolean DEBUG_DRAW = false || LOCAL_LOGV; 119 private static final boolean DEBUG_LAYOUT = false || LOCAL_LOGV; 120 private static final boolean DEBUG_DIALOG = false || LOCAL_LOGV; 121 private static final boolean DEBUG_INPUT_RESIZE = false || LOCAL_LOGV; 122 private static final boolean DEBUG_ORIENTATION = false || LOCAL_LOGV; 123 private static final boolean DEBUG_TRACKBALL = false || LOCAL_LOGV; 124 private static final boolean DEBUG_IMF = false || LOCAL_LOGV; 125 private static final boolean DEBUG_CONFIGURATION = false || LOCAL_LOGV; 126 private static final boolean DEBUG_FPS = false; 127 private static final boolean DEBUG_INPUT_STAGES = 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 mPointerIconShape = PointerIcon.STYLE_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 /** 393 * Consistency verifier for debugging purposes. 394 */ 395 protected final InputEventConsistencyVerifier mInputEventConsistencyVerifier = 396 InputEventConsistencyVerifier.isInstrumentationEnabled() ? 397 new InputEventConsistencyVerifier(this, 0) : null; 398 399 static final class SystemUiVisibilityInfo { 400 int seq; 401 int globalVisibility; 402 int localValue; 403 int localChanges; 404 } 405 406 private String mTag = TAG; 407 408 public ViewRootImpl(Context context, Display display) { 409 mContext = context; 410 mWindowSession = WindowManagerGlobal.getWindowSession(); 411 mDisplay = display; 412 mBasePackageName = context.getBasePackageName(); 413 414 mDisplayAdjustments = display.getDisplayAdjustments(); 415 416 mThread = Thread.currentThread(); 417 mLocation = new WindowLeaked(null); 418 mLocation.fillInStackTrace(); 419 mWidth = -1; 420 mHeight = -1; 421 mDirty = new Rect(); 422 mTempRect = new Rect(); 423 mVisRect = new Rect(); 424 mWinFrame = new Rect(); 425 mWindow = new W(this); 426 mTargetSdkVersion = context.getApplicationInfo().targetSdkVersion; 427 mViewVisibility = View.GONE; 428 mTransparentRegion = new Region(); 429 mPreviousTransparentRegion = new Region(); 430 mFirst = true; // true for the first time the view is added 431 mAdded = false; 432 mAttachInfo = new View.AttachInfo(mWindowSession, mWindow, display, this, mHandler, this); 433 mAccessibilityManager = AccessibilityManager.getInstance(context); 434 mAccessibilityInteractionConnectionManager = 435 new AccessibilityInteractionConnectionManager(); 436 mAccessibilityManager.addAccessibilityStateChangeListener( 437 mAccessibilityInteractionConnectionManager); 438 mHighContrastTextManager = new HighContrastTextManager(); 439 mAccessibilityManager.addHighTextContrastStateChangeListener( 440 mHighContrastTextManager); 441 mViewConfiguration = ViewConfiguration.get(context); 442 mDensity = context.getResources().getDisplayMetrics().densityDpi; 443 mNoncompatDensity = context.getResources().getDisplayMetrics().noncompatDensityDpi; 444 mFallbackEventHandler = new PhoneFallbackEventHandler(context); 445 mChoreographer = Choreographer.getInstance(); 446 mDisplayManager = (DisplayManager)context.getSystemService(Context.DISPLAY_SERVICE); 447 loadSystemProperties(); 448 } 449 450 public static void addFirstDrawHandler(Runnable callback) { 451 synchronized (sFirstDrawHandlers) { 452 if (!sFirstDrawComplete) { 453 sFirstDrawHandlers.add(callback); 454 } 455 } 456 } 457 458 public static void addConfigCallback(ComponentCallbacks callback) { 459 synchronized (sConfigCallbacks) { 460 sConfigCallbacks.add(callback); 461 } 462 } 463 464 public void addWindowCallbacks(WindowCallbacks callback) { 465 if (USE_MT_RENDERER) { 466 synchronized (mWindowCallbacks) { 467 mWindowCallbacks.add(callback); 468 } 469 } 470 } 471 472 public void removeWindowCallbacks(WindowCallbacks callback) { 473 if (USE_MT_RENDERER) { 474 synchronized (mWindowCallbacks) { 475 mWindowCallbacks.remove(callback); 476 } 477 } 478 } 479 480 public void reportDrawFinish() { 481 if (mWindowDrawCountDown != null) { 482 mWindowDrawCountDown.countDown(); 483 } 484 } 485 486 // FIXME for perf testing only 487 private boolean mProfile = false; 488 489 /** 490 * Call this to profile the next traversal call. 491 * FIXME for perf testing only. Remove eventually 492 */ 493 public void profile() { 494 mProfile = true; 495 } 496 497 /** 498 * Indicates whether we are in touch mode. Calling this method triggers an IPC 499 * call and should be avoided whenever possible. 500 * 501 * @return True, if the device is in touch mode, false otherwise. 502 * 503 * @hide 504 */ 505 static boolean isInTouchMode() { 506 IWindowSession windowSession = WindowManagerGlobal.peekWindowSession(); 507 if (windowSession != null) { 508 try { 509 return windowSession.getInTouchMode(); 510 } catch (RemoteException e) { 511 } 512 } 513 return false; 514 } 515 516 /** 517 * We have one child 518 */ 519 public void setView(View view, WindowManager.LayoutParams attrs, View panelParentView) { 520 synchronized (this) { 521 if (mView == null) { 522 mView = view; 523 524 mAttachInfo.mDisplayState = mDisplay.getState(); 525 mDisplayManager.registerDisplayListener(mDisplayListener, mHandler); 526 527 mViewLayoutDirectionInitial = mView.getRawLayoutDirection(); 528 mFallbackEventHandler.setView(view); 529 mWindowAttributes.copyFrom(attrs); 530 if (mWindowAttributes.packageName == null) { 531 mWindowAttributes.packageName = mBasePackageName; 532 } 533 attrs = mWindowAttributes; 534 setTag(); 535 // Keep track of the actual window flags supplied by the client. 536 mClientWindowLayoutFlags = attrs.flags; 537 538 setAccessibilityFocus(null, null); 539 540 if (view instanceof RootViewSurfaceTaker) { 541 mSurfaceHolderCallback = 542 ((RootViewSurfaceTaker)view).willYouTakeTheSurface(); 543 if (mSurfaceHolderCallback != null) { 544 mSurfaceHolder = new TakenSurfaceHolder(); 545 mSurfaceHolder.setFormat(PixelFormat.UNKNOWN); 546 } 547 } 548 549 // Compute surface insets required to draw at specified Z value. 550 // TODO: Use real shadow insets for a constant max Z. 551 if (!attrs.hasManualSurfaceInsets) { 552 attrs.setSurfaceInsets(view, false /*manual*/, true /*preservePrevious*/); 553 } 554 555 CompatibilityInfo compatibilityInfo = mDisplayAdjustments.getCompatibilityInfo(); 556 mTranslator = compatibilityInfo.getTranslator(); 557 558 // If the application owns the surface, don't enable hardware acceleration 559 if (mSurfaceHolder == null) { 560 enableHardwareAcceleration(attrs); 561 } 562 563 boolean restore = false; 564 if (mTranslator != null) { 565 mSurface.setCompatibilityTranslator(mTranslator); 566 restore = true; 567 attrs.backup(); 568 mTranslator.translateWindowLayout(attrs); 569 } 570 if (DEBUG_LAYOUT) Log.d(mTag, "WindowLayout in setView:" + attrs); 571 572 if (!compatibilityInfo.supportsScreen()) { 573 attrs.privateFlags |= WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 574 mLastInCompatMode = true; 575 } 576 577 mSoftInputMode = attrs.softInputMode; 578 mWindowAttributesChanged = true; 579 mWindowAttributesChangesFlag = WindowManager.LayoutParams.EVERYTHING_CHANGED; 580 mAttachInfo.mRootView = view; 581 mAttachInfo.mScalingRequired = mTranslator != null; 582 mAttachInfo.mApplicationScale = 583 mTranslator == null ? 1.0f : mTranslator.applicationScale; 584 if (panelParentView != null) { 585 mAttachInfo.mPanelParentWindowToken 586 = panelParentView.getApplicationWindowToken(); 587 } 588 mAdded = true; 589 int res; /* = WindowManagerImpl.ADD_OKAY; */ 590 591 // Schedule the first layout -before- adding to the window 592 // manager, to make sure we do the relayout before receiving 593 // any other events from the system. 594 requestLayout(); 595 if ((mWindowAttributes.inputFeatures 596 & WindowManager.LayoutParams.INPUT_FEATURE_NO_INPUT_CHANNEL) == 0) { 597 mInputChannel = new InputChannel(); 598 } 599 mForceDecorViewVisibility = (mWindowAttributes.privateFlags 600 & PRIVATE_FLAG_FORCE_DECOR_VIEW_VISIBILITY) != 0; 601 try { 602 mOrigWindowType = mWindowAttributes.type; 603 mAttachInfo.mRecomputeGlobalAttributes = true; 604 collectViewAttributes(); 605 res = mWindowSession.addToDisplay(mWindow, mSeq, mWindowAttributes, 606 getHostVisibility(), mDisplay.getDisplayId(), 607 mAttachInfo.mContentInsets, mAttachInfo.mStableInsets, 608 mAttachInfo.mOutsets, mInputChannel); 609 } catch (RemoteException e) { 610 mAdded = false; 611 mView = null; 612 mAttachInfo.mRootView = null; 613 mInputChannel = null; 614 mFallbackEventHandler.setView(null); 615 unscheduleTraversals(); 616 setAccessibilityFocus(null, null); 617 throw new RuntimeException("Adding window failed", e); 618 } finally { 619 if (restore) { 620 attrs.restore(); 621 } 622 } 623 624 if (mTranslator != null) { 625 mTranslator.translateRectInScreenToAppWindow(mAttachInfo.mContentInsets); 626 } 627 mPendingOverscanInsets.set(0, 0, 0, 0); 628 mPendingContentInsets.set(mAttachInfo.mContentInsets); 629 mPendingStableInsets.set(mAttachInfo.mStableInsets); 630 mPendingVisibleInsets.set(0, 0, 0, 0); 631 mAttachInfo.mAlwaysConsumeNavBar = 632 (res & WindowManagerGlobal.ADD_FLAG_ALWAYS_CONSUME_NAV_BAR) != 0; 633 mPendingAlwaysConsumeNavBar = mAttachInfo.mAlwaysConsumeNavBar; 634 if (DEBUG_LAYOUT) Log.v(mTag, "Added window " + mWindow); 635 if (res < WindowManagerGlobal.ADD_OKAY) { 636 mAttachInfo.mRootView = null; 637 mAdded = false; 638 mFallbackEventHandler.setView(null); 639 unscheduleTraversals(); 640 setAccessibilityFocus(null, null); 641 switch (res) { 642 case WindowManagerGlobal.ADD_BAD_APP_TOKEN: 643 case WindowManagerGlobal.ADD_BAD_SUBWINDOW_TOKEN: 644 throw new WindowManager.BadTokenException( 645 "Unable to add window -- token " + attrs.token 646 + " is not valid; is your activity running?"); 647 case WindowManagerGlobal.ADD_NOT_APP_TOKEN: 648 throw new WindowManager.BadTokenException( 649 "Unable to add window -- token " + attrs.token 650 + " is not for an application"); 651 case WindowManagerGlobal.ADD_APP_EXITING: 652 throw new WindowManager.BadTokenException( 653 "Unable to add window -- app for token " + attrs.token 654 + " is exiting"); 655 case WindowManagerGlobal.ADD_DUPLICATE_ADD: 656 throw new WindowManager.BadTokenException( 657 "Unable to add window -- window " + mWindow 658 + " has already been added"); 659 case WindowManagerGlobal.ADD_STARTING_NOT_NEEDED: 660 // Silently ignore -- we would have just removed it 661 // right away, anyway. 662 return; 663 case WindowManagerGlobal.ADD_MULTIPLE_SINGLETON: 664 throw new WindowManager.BadTokenException("Unable to add window " 665 + mWindow + " -- another window of type " 666 + mWindowAttributes.type + " already exists"); 667 case WindowManagerGlobal.ADD_PERMISSION_DENIED: 668 throw new WindowManager.BadTokenException("Unable to add window " 669 + mWindow + " -- permission denied for window type " 670 + mWindowAttributes.type); 671 case WindowManagerGlobal.ADD_INVALID_DISPLAY: 672 throw new WindowManager.InvalidDisplayException("Unable to add window " 673 + mWindow + " -- the specified display can not be found"); 674 case WindowManagerGlobal.ADD_INVALID_TYPE: 675 throw new WindowManager.InvalidDisplayException("Unable to add window " 676 + mWindow + " -- the specified window type " 677 + mWindowAttributes.type + " is not valid"); 678 } 679 throw new RuntimeException( 680 "Unable to add window -- unknown error code " + res); 681 } 682 683 if (view instanceof RootViewSurfaceTaker) { 684 mInputQueueCallback = 685 ((RootViewSurfaceTaker)view).willYouTakeTheInputQueue(); 686 } 687 if (mInputChannel != null) { 688 if (mInputQueueCallback != null) { 689 mInputQueue = new InputQueue(); 690 mInputQueueCallback.onInputQueueCreated(mInputQueue); 691 } 692 mInputEventReceiver = new WindowInputEventReceiver(mInputChannel, 693 Looper.myLooper()); 694 } 695 696 view.assignParent(this); 697 mAddedTouchMode = (res & WindowManagerGlobal.ADD_FLAG_IN_TOUCH_MODE) != 0; 698 mAppVisible = (res & WindowManagerGlobal.ADD_FLAG_APP_VISIBLE) != 0; 699 700 if (mAccessibilityManager.isEnabled()) { 701 mAccessibilityInteractionConnectionManager.ensureConnection(); 702 } 703 704 if (view.getImportantForAccessibility() == View.IMPORTANT_FOR_ACCESSIBILITY_AUTO) { 705 view.setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_YES); 706 } 707 708 // Set up the input pipeline. 709 CharSequence counterSuffix = attrs.getTitle(); 710 mSyntheticInputStage = new SyntheticInputStage(); 711 InputStage viewPostImeStage = new ViewPostImeInputStage(mSyntheticInputStage); 712 InputStage nativePostImeStage = new NativePostImeInputStage(viewPostImeStage, 713 "aq:native-post-ime:" + counterSuffix); 714 InputStage earlyPostImeStage = new EarlyPostImeInputStage(nativePostImeStage); 715 InputStage imeStage = new ImeInputStage(earlyPostImeStage, 716 "aq:ime:" + counterSuffix); 717 InputStage viewPreImeStage = new ViewPreImeInputStage(imeStage); 718 InputStage nativePreImeStage = new NativePreImeInputStage(viewPreImeStage, 719 "aq:native-pre-ime:" + counterSuffix); 720 721 mFirstInputStage = nativePreImeStage; 722 mFirstPostImeInputStage = earlyPostImeStage; 723 mPendingInputEventQueueLengthCounterName = "aq:pending:" + counterSuffix; 724 } 725 } 726 } 727 728 private void setTag() { 729 final String[] split = mWindowAttributes.getTitle().toString().split("\\."); 730 if (split.length > 0) { 731 mTag = TAG + "[" + split[split.length - 1] + "]"; 732 } 733 } 734 735 /** Whether the window is in local focus mode or not */ 736 private boolean isInLocalFocusMode() { 737 return (mWindowAttributes.flags & WindowManager.LayoutParams.FLAG_LOCAL_FOCUS_MODE) != 0; 738 } 739 740 public int getWindowFlags() { 741 return mWindowAttributes.flags; 742 } 743 744 public int getDisplayId() { 745 return mDisplay.getDisplayId(); 746 } 747 748 public CharSequence getTitle() { 749 return mWindowAttributes.getTitle(); 750 } 751 752 void destroyHardwareResources() { 753 if (mAttachInfo.mHardwareRenderer != null) { 754 mAttachInfo.mHardwareRenderer.destroyHardwareResources(mView); 755 mAttachInfo.mHardwareRenderer.destroy(); 756 } 757 } 758 759 public void detachFunctor(long functor) { 760 if (mAttachInfo.mHardwareRenderer != null) { 761 // Fence so that any pending invokeFunctor() messages will be processed 762 // before we return from detachFunctor. 763 mAttachInfo.mHardwareRenderer.stopDrawing(); 764 } 765 } 766 767 /** 768 * Schedules the functor for execution in either kModeProcess or 769 * kModeProcessNoContext, depending on whether or not there is an EGLContext. 770 * 771 * @param functor The native functor to invoke 772 * @param waitForCompletion If true, this will not return until the functor 773 * has invoked. If false, the functor may be invoked 774 * asynchronously. 775 */ 776 public static void invokeFunctor(long functor, boolean waitForCompletion) { 777 ThreadedRenderer.invokeFunctor(functor, waitForCompletion); 778 } 779 780 public void registerAnimatingRenderNode(RenderNode animator) { 781 if (mAttachInfo.mHardwareRenderer != null) { 782 mAttachInfo.mHardwareRenderer.registerAnimatingRenderNode(animator); 783 } else { 784 if (mAttachInfo.mPendingAnimatingRenderNodes == null) { 785 mAttachInfo.mPendingAnimatingRenderNodes = new ArrayList<RenderNode>(); 786 } 787 mAttachInfo.mPendingAnimatingRenderNodes.add(animator); 788 } 789 } 790 791 private void enableHardwareAcceleration(WindowManager.LayoutParams attrs) { 792 mAttachInfo.mHardwareAccelerated = false; 793 mAttachInfo.mHardwareAccelerationRequested = false; 794 795 // Don't enable hardware acceleration when the application is in compatibility mode 796 if (mTranslator != null) return; 797 798 // Try to enable hardware acceleration if requested 799 final boolean hardwareAccelerated = 800 (attrs.flags & WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED) != 0; 801 802 if (hardwareAccelerated) { 803 if (!ThreadedRenderer.isAvailable()) { 804 return; 805 } 806 807 // Persistent processes (including the system) should not do 808 // accelerated rendering on low-end devices. In that case, 809 // sRendererDisabled will be set. In addition, the system process 810 // itself should never do accelerated rendering. In that case, both 811 // sRendererDisabled and sSystemRendererDisabled are set. When 812 // sSystemRendererDisabled is set, PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED 813 // can be used by code on the system process to escape that and enable 814 // HW accelerated drawing. (This is basically for the lock screen.) 815 816 final boolean fakeHwAccelerated = (attrs.privateFlags & 817 WindowManager.LayoutParams.PRIVATE_FLAG_FAKE_HARDWARE_ACCELERATED) != 0; 818 final boolean forceHwAccelerated = (attrs.privateFlags & 819 WindowManager.LayoutParams.PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED) != 0; 820 821 if (fakeHwAccelerated) { 822 // This is exclusively for the preview windows the window manager 823 // shows for launching applications, so they will look more like 824 // the app being launched. 825 mAttachInfo.mHardwareAccelerationRequested = true; 826 } else if (!ThreadedRenderer.sRendererDisabled 827 || (ThreadedRenderer.sSystemRendererDisabled && forceHwAccelerated)) { 828 if (mAttachInfo.mHardwareRenderer != null) { 829 mAttachInfo.mHardwareRenderer.destroy(); 830 } 831 832 final Rect insets = attrs.surfaceInsets; 833 final boolean hasSurfaceInsets = insets.left != 0 || insets.right != 0 834 || insets.top != 0 || insets.bottom != 0; 835 final boolean translucent = attrs.format != PixelFormat.OPAQUE || hasSurfaceInsets; 836 mAttachInfo.mHardwareRenderer = ThreadedRenderer.create(mContext, translucent); 837 if (mAttachInfo.mHardwareRenderer != null) { 838 mAttachInfo.mHardwareRenderer.setName(attrs.getTitle().toString()); 839 mAttachInfo.mHardwareAccelerated = 840 mAttachInfo.mHardwareAccelerationRequested = true; 841 } 842 } 843 } 844 } 845 846 public View getView() { 847 return mView; 848 } 849 850 final WindowLeaked getLocation() { 851 return mLocation; 852 } 853 854 void setLayoutParams(WindowManager.LayoutParams attrs, boolean newView) { 855 synchronized (this) { 856 final int oldInsetLeft = mWindowAttributes.surfaceInsets.left; 857 final int oldInsetTop = mWindowAttributes.surfaceInsets.top; 858 final int oldInsetRight = mWindowAttributes.surfaceInsets.right; 859 final int oldInsetBottom = mWindowAttributes.surfaceInsets.bottom; 860 final int oldSoftInputMode = mWindowAttributes.softInputMode; 861 final boolean oldHasManualSurfaceInsets = mWindowAttributes.hasManualSurfaceInsets; 862 863 // Keep track of the actual window flags supplied by the client. 864 mClientWindowLayoutFlags = attrs.flags; 865 866 // Preserve compatible window flag if exists. 867 final int compatibleWindowFlag = mWindowAttributes.privateFlags 868 & WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 869 870 // Transfer over system UI visibility values as they carry current state. 871 attrs.systemUiVisibility = mWindowAttributes.systemUiVisibility; 872 attrs.subtreeSystemUiVisibility = mWindowAttributes.subtreeSystemUiVisibility; 873 874 mWindowAttributesChangesFlag = mWindowAttributes.copyFrom(attrs); 875 if ((mWindowAttributesChangesFlag 876 & WindowManager.LayoutParams.TRANSLUCENT_FLAGS_CHANGED) != 0) { 877 // Recompute system ui visibility. 878 mAttachInfo.mRecomputeGlobalAttributes = true; 879 } 880 if (mWindowAttributes.packageName == null) { 881 mWindowAttributes.packageName = mBasePackageName; 882 } 883 mWindowAttributes.privateFlags |= compatibleWindowFlag; 884 885 if (mWindowAttributes.preservePreviousSurfaceInsets) { 886 // Restore old surface insets. 887 mWindowAttributes.surfaceInsets.set( 888 oldInsetLeft, oldInsetTop, oldInsetRight, oldInsetBottom); 889 mWindowAttributes.hasManualSurfaceInsets = oldHasManualSurfaceInsets; 890 } 891 892 applyKeepScreenOnFlag(mWindowAttributes); 893 894 if (newView) { 895 mSoftInputMode = attrs.softInputMode; 896 requestLayout(); 897 } 898 899 // Don't lose the mode we last auto-computed. 900 if ((attrs.softInputMode & WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 901 == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 902 mWindowAttributes.softInputMode = (mWindowAttributes.softInputMode 903 & ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 904 | (oldSoftInputMode & WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST); 905 } 906 907 mWindowAttributesChanged = true; 908 scheduleTraversals(); 909 } 910 } 911 912 void handleAppVisibility(boolean visible) { 913 if (mAppVisible != visible) { 914 mAppVisible = visible; 915 scheduleTraversals(); 916 if (!mAppVisible) { 917 WindowManagerGlobal.trimForeground(); 918 } 919 } 920 } 921 922 void handleGetNewSurface() { 923 mNewSurfaceNeeded = true; 924 mFullRedrawNeeded = true; 925 scheduleTraversals(); 926 } 927 928 private final DisplayListener mDisplayListener = new DisplayListener() { 929 @Override 930 public void onDisplayChanged(int displayId) { 931 if (mView != null && mDisplay.getDisplayId() == displayId) { 932 final int oldDisplayState = mAttachInfo.mDisplayState; 933 final int newDisplayState = mDisplay.getState(); 934 if (oldDisplayState != newDisplayState) { 935 mAttachInfo.mDisplayState = newDisplayState; 936 pokeDrawLockIfNeeded(); 937 if (oldDisplayState != Display.STATE_UNKNOWN) { 938 final int oldScreenState = toViewScreenState(oldDisplayState); 939 final int newScreenState = toViewScreenState(newDisplayState); 940 if (oldScreenState != newScreenState) { 941 mView.dispatchScreenStateChanged(newScreenState); 942 } 943 if (oldDisplayState == Display.STATE_OFF) { 944 // Draw was suppressed so we need to for it to happen here. 945 mFullRedrawNeeded = true; 946 scheduleTraversals(); 947 } 948 } 949 } 950 } 951 } 952 953 @Override 954 public void onDisplayRemoved(int displayId) { 955 } 956 957 @Override 958 public void onDisplayAdded(int displayId) { 959 } 960 961 private int toViewScreenState(int displayState) { 962 return displayState == Display.STATE_OFF ? 963 View.SCREEN_STATE_OFF : View.SCREEN_STATE_ON; 964 } 965 }; 966 967 void pokeDrawLockIfNeeded() { 968 final int displayState = mAttachInfo.mDisplayState; 969 if (mView != null && mAdded && mTraversalScheduled 970 && (displayState == Display.STATE_DOZE 971 || displayState == Display.STATE_DOZE_SUSPEND)) { 972 try { 973 mWindowSession.pokeDrawLock(mWindow); 974 } catch (RemoteException ex) { 975 // System server died, oh well. 976 } 977 } 978 } 979 980 @Override 981 public void requestFitSystemWindows() { 982 checkThread(); 983 mApplyInsetsRequested = true; 984 scheduleTraversals(); 985 } 986 987 @Override 988 public void requestLayout() { 989 if (!mHandlingLayoutInLayoutRequest) { 990 checkThread(); 991 mLayoutRequested = true; 992 scheduleTraversals(); 993 } 994 } 995 996 @Override 997 public boolean isLayoutRequested() { 998 return mLayoutRequested; 999 } 1000 1001 void invalidate() { 1002 mDirty.set(0, 0, mWidth, mHeight); 1003 if (!mWillDrawSoon) { 1004 scheduleTraversals(); 1005 } 1006 } 1007 1008 void invalidateWorld(View view) { 1009 view.invalidate(); 1010 if (view instanceof ViewGroup) { 1011 ViewGroup parent = (ViewGroup) view; 1012 for (int i = 0; i < parent.getChildCount(); i++) { 1013 invalidateWorld(parent.getChildAt(i)); 1014 } 1015 } 1016 } 1017 1018 @Override 1019 public void invalidateChild(View child, Rect dirty) { 1020 invalidateChildInParent(null, dirty); 1021 } 1022 1023 @Override 1024 public ViewParent invalidateChildInParent(int[] location, Rect dirty) { 1025 checkThread(); 1026 if (DEBUG_DRAW) Log.v(mTag, "Invalidate child: " + dirty); 1027 1028 if (dirty == null) { 1029 invalidate(); 1030 return null; 1031 } else if (dirty.isEmpty() && !mIsAnimating) { 1032 return null; 1033 } 1034 1035 if (mCurScrollY != 0 || mTranslator != null) { 1036 mTempRect.set(dirty); 1037 dirty = mTempRect; 1038 if (mCurScrollY != 0) { 1039 dirty.offset(0, -mCurScrollY); 1040 } 1041 if (mTranslator != null) { 1042 mTranslator.translateRectInAppWindowToScreen(dirty); 1043 } 1044 if (mAttachInfo.mScalingRequired) { 1045 dirty.inset(-1, -1); 1046 } 1047 } 1048 1049 invalidateRectOnScreen(dirty); 1050 1051 return null; 1052 } 1053 1054 private void invalidateRectOnScreen(Rect dirty) { 1055 final Rect localDirty = mDirty; 1056 if (!localDirty.isEmpty() && !localDirty.contains(dirty)) { 1057 mAttachInfo.mSetIgnoreDirtyState = true; 1058 mAttachInfo.mIgnoreDirtyState = true; 1059 } 1060 1061 // Add the new dirty rect to the current one 1062 localDirty.union(dirty.left, dirty.top, dirty.right, dirty.bottom); 1063 // Intersect with the bounds of the window to skip 1064 // updates that lie outside of the visible region 1065 final float appScale = mAttachInfo.mApplicationScale; 1066 final boolean intersected = localDirty.intersect(0, 0, 1067 (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 1068 if (!intersected) { 1069 localDirty.setEmpty(); 1070 } 1071 if (!mWillDrawSoon && (intersected || mIsAnimating)) { 1072 scheduleTraversals(); 1073 } 1074 } 1075 1076 public void setIsAmbientMode(boolean ambient) { 1077 mIsAmbientMode = ambient; 1078 } 1079 1080 void setWindowStopped(boolean stopped) { 1081 if (mStopped != stopped) { 1082 mStopped = stopped; 1083 if (!mStopped) { 1084 scheduleTraversals(); 1085 } else { 1086 if (mAttachInfo.mHardwareRenderer != null) { 1087 if (DEBUG_DRAW) Log.d(mTag, "WindowStopped on " + getTitle()); 1088 mAttachInfo.mHardwareRenderer.updateSurface(null); 1089 mAttachInfo.mHardwareRenderer.destroyHardwareResources(mView); 1090 } 1091 } 1092 } 1093 } 1094 1095 /** 1096 * Block the input events during an Activity Transition. The KEYCODE_BACK event is allowed 1097 * through to allow quick reversal of the Activity Transition. 1098 * 1099 * @param paused true to pause, false to resume. 1100 */ 1101 public void setPausedForTransition(boolean paused) { 1102 mPausedForTransition = paused; 1103 } 1104 1105 @Override 1106 public ViewParent getParent() { 1107 return null; 1108 } 1109 1110 @Override 1111 public boolean getChildVisibleRect(View child, Rect r, android.graphics.Point offset) { 1112 if (child != mView) { 1113 throw new RuntimeException("child is not mine, honest!"); 1114 } 1115 // Note: don't apply scroll offset, because we want to know its 1116 // visibility in the virtual canvas being given to the view hierarchy. 1117 return r.intersect(0, 0, mWidth, mHeight); 1118 } 1119 1120 @Override 1121 public void bringChildToFront(View child) { 1122 } 1123 1124 int getHostVisibility() { 1125 return (mAppVisible || mForceDecorViewVisibility) ? mView.getVisibility() : View.GONE; 1126 } 1127 1128 /** 1129 * Add LayoutTransition to the list of transitions to be started in the next traversal. 1130 * This list will be cleared after the transitions on the list are start()'ed. These 1131 * transitionsa re added by LayoutTransition itself when it sets up animations. The setup 1132 * happens during the layout phase of traversal, which we want to complete before any of the 1133 * animations are started (because those animations may side-effect properties that layout 1134 * depends upon, like the bounding rectangles of the affected views). So we add the transition 1135 * to the list and it is started just prior to starting the drawing phase of traversal. 1136 * 1137 * @param transition The LayoutTransition to be started on the next traversal. 1138 * 1139 * @hide 1140 */ 1141 public void requestTransitionStart(LayoutTransition transition) { 1142 if (mPendingTransitions == null || !mPendingTransitions.contains(transition)) { 1143 if (mPendingTransitions == null) { 1144 mPendingTransitions = new ArrayList<LayoutTransition>(); 1145 } 1146 mPendingTransitions.add(transition); 1147 } 1148 } 1149 1150 /** 1151 * Notifies the HardwareRenderer that a new frame will be coming soon. 1152 * Currently only {@link ThreadedRenderer} cares about this, and uses 1153 * this knowledge to adjust the scheduling of off-thread animations 1154 */ 1155 void notifyRendererOfFramePending() { 1156 if (mAttachInfo.mHardwareRenderer != null) { 1157 mAttachInfo.mHardwareRenderer.notifyFramePending(); 1158 } 1159 } 1160 1161 void scheduleTraversals() { 1162 if (!mTraversalScheduled) { 1163 mTraversalScheduled = true; 1164 mTraversalBarrier = mHandler.getLooper().getQueue().postSyncBarrier(); 1165 mChoreographer.postCallback( 1166 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 1167 if (!mUnbufferedInputDispatch) { 1168 scheduleConsumeBatchedInput(); 1169 } 1170 notifyRendererOfFramePending(); 1171 pokeDrawLockIfNeeded(); 1172 } 1173 } 1174 1175 void unscheduleTraversals() { 1176 if (mTraversalScheduled) { 1177 mTraversalScheduled = false; 1178 mHandler.getLooper().getQueue().removeSyncBarrier(mTraversalBarrier); 1179 mChoreographer.removeCallbacks( 1180 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 1181 } 1182 } 1183 1184 void doTraversal() { 1185 if (mTraversalScheduled) { 1186 mTraversalScheduled = false; 1187 mHandler.getLooper().getQueue().removeSyncBarrier(mTraversalBarrier); 1188 1189 if (mProfile) { 1190 Debug.startMethodTracing("ViewAncestor"); 1191 } 1192 1193 performTraversals(); 1194 1195 if (mProfile) { 1196 Debug.stopMethodTracing(); 1197 mProfile = false; 1198 } 1199 } 1200 } 1201 1202 private void applyKeepScreenOnFlag(WindowManager.LayoutParams params) { 1203 // Update window's global keep screen on flag: if a view has requested 1204 // that the screen be kept on, then it is always set; otherwise, it is 1205 // set to whatever the client last requested for the global state. 1206 if (mAttachInfo.mKeepScreenOn) { 1207 params.flags |= WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON; 1208 } else { 1209 params.flags = (params.flags&~WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON) 1210 | (mClientWindowLayoutFlags&WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 1211 } 1212 } 1213 1214 private boolean collectViewAttributes() { 1215 if (mAttachInfo.mRecomputeGlobalAttributes) { 1216 //Log.i(mTag, "Computing view hierarchy attributes!"); 1217 mAttachInfo.mRecomputeGlobalAttributes = false; 1218 boolean oldScreenOn = mAttachInfo.mKeepScreenOn; 1219 mAttachInfo.mKeepScreenOn = false; 1220 mAttachInfo.mSystemUiVisibility = 0; 1221 mAttachInfo.mHasSystemUiListeners = false; 1222 mView.dispatchCollectViewAttributes(mAttachInfo, 0); 1223 mAttachInfo.mSystemUiVisibility &= ~mAttachInfo.mDisabledSystemUiVisibility; 1224 WindowManager.LayoutParams params = mWindowAttributes; 1225 mAttachInfo.mSystemUiVisibility |= getImpliedSystemUiVisibility(params); 1226 if (mAttachInfo.mKeepScreenOn != oldScreenOn 1227 || mAttachInfo.mSystemUiVisibility != params.subtreeSystemUiVisibility 1228 || mAttachInfo.mHasSystemUiListeners != params.hasSystemUiListeners) { 1229 applyKeepScreenOnFlag(params); 1230 params.subtreeSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1231 params.hasSystemUiListeners = mAttachInfo.mHasSystemUiListeners; 1232 mView.dispatchWindowSystemUiVisiblityChanged(mAttachInfo.mSystemUiVisibility); 1233 return true; 1234 } 1235 } 1236 return false; 1237 } 1238 1239 private int getImpliedSystemUiVisibility(WindowManager.LayoutParams params) { 1240 int vis = 0; 1241 // Translucent decor window flags imply stable system ui visibility. 1242 if ((params.flags & WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS) != 0) { 1243 vis |= View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN; 1244 } 1245 if ((params.flags & WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION) != 0) { 1246 vis |= View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION; 1247 } 1248 return vis; 1249 } 1250 1251 private boolean measureHierarchy(final View host, final WindowManager.LayoutParams lp, 1252 final Resources res, final int desiredWindowWidth, final int desiredWindowHeight) { 1253 int childWidthMeasureSpec; 1254 int childHeightMeasureSpec; 1255 boolean windowSizeMayChange = false; 1256 1257 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) Log.v(mTag, 1258 "Measuring " + host + " in display " + desiredWindowWidth 1259 + "x" + desiredWindowHeight + "..."); 1260 1261 boolean goodMeasure = false; 1262 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT) { 1263 // On large screens, we don't want to allow dialogs to just 1264 // stretch to fill the entire width of the screen to display 1265 // one line of text. First try doing the layout at a smaller 1266 // size to see if it will fit. 1267 final DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1268 res.getValue(com.android.internal.R.dimen.config_prefDialogWidth, mTmpValue, true); 1269 int baseSize = 0; 1270 if (mTmpValue.type == TypedValue.TYPE_DIMENSION) { 1271 baseSize = (int)mTmpValue.getDimension(packageMetrics); 1272 } 1273 if (DEBUG_DIALOG) Log.v(mTag, "Window " + mView + ": baseSize=" + baseSize 1274 + ", desiredWindowWidth=" + desiredWindowWidth); 1275 if (baseSize != 0 && desiredWindowWidth > baseSize) { 1276 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1277 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1278 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1279 if (DEBUG_DIALOG) Log.v(mTag, "Window " + mView + ": measured (" 1280 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() 1281 + ") from width spec: " + MeasureSpec.toString(childWidthMeasureSpec) 1282 + " and height spec: " + MeasureSpec.toString(childHeightMeasureSpec)); 1283 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1284 goodMeasure = true; 1285 } else { 1286 // Didn't fit in that size... try expanding a bit. 1287 baseSize = (baseSize+desiredWindowWidth)/2; 1288 if (DEBUG_DIALOG) Log.v(mTag, "Window " + mView + ": next baseSize=" 1289 + baseSize); 1290 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1291 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1292 if (DEBUG_DIALOG) Log.v(mTag, "Window " + mView + ": measured (" 1293 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1294 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1295 if (DEBUG_DIALOG) Log.v(mTag, "Good!"); 1296 goodMeasure = true; 1297 } 1298 } 1299 } 1300 } 1301 1302 if (!goodMeasure) { 1303 childWidthMeasureSpec = getRootMeasureSpec(desiredWindowWidth, lp.width); 1304 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1305 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1306 if (mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) { 1307 windowSizeMayChange = true; 1308 } 1309 } 1310 1311 if (DBG) { 1312 System.out.println("======================================"); 1313 System.out.println("performTraversals -- after measure"); 1314 host.debug(); 1315 } 1316 1317 return windowSizeMayChange; 1318 } 1319 1320 /** 1321 * Modifies the input matrix such that it maps view-local coordinates to 1322 * on-screen coordinates. 1323 * 1324 * @param m input matrix to modify 1325 */ 1326 void transformMatrixToGlobal(Matrix m) { 1327 m.preTranslate(mAttachInfo.mWindowLeft, mAttachInfo.mWindowTop); 1328 } 1329 1330 /** 1331 * Modifies the input matrix such that it maps on-screen coordinates to 1332 * view-local coordinates. 1333 * 1334 * @param m input matrix to modify 1335 */ 1336 void transformMatrixToLocal(Matrix m) { 1337 m.postTranslate(-mAttachInfo.mWindowLeft, -mAttachInfo.mWindowTop); 1338 } 1339 1340 /* package */ WindowInsets getWindowInsets(boolean forceConstruct) { 1341 if (mLastWindowInsets == null || forceConstruct) { 1342 mDispatchContentInsets.set(mAttachInfo.mContentInsets); 1343 mDispatchStableInsets.set(mAttachInfo.mStableInsets); 1344 Rect contentInsets = mDispatchContentInsets; 1345 Rect stableInsets = mDispatchStableInsets; 1346 // For dispatch we preserve old logic, but for direct requests from Views we allow to 1347 // immediately use pending insets. 1348 if (!forceConstruct 1349 && (!mPendingContentInsets.equals(contentInsets) || 1350 !mPendingStableInsets.equals(stableInsets))) { 1351 contentInsets = mPendingContentInsets; 1352 stableInsets = mPendingStableInsets; 1353 } 1354 Rect outsets = mAttachInfo.mOutsets; 1355 if (outsets.left > 0 || outsets.top > 0 || outsets.right > 0 || outsets.bottom > 0) { 1356 contentInsets = new Rect(contentInsets.left + outsets.left, 1357 contentInsets.top + outsets.top, contentInsets.right + outsets.right, 1358 contentInsets.bottom + outsets.bottom); 1359 } 1360 mLastWindowInsets = new WindowInsets(contentInsets, 1361 null /* windowDecorInsets */, stableInsets, 1362 mContext.getResources().getConfiguration().isScreenRound(), 1363 mAttachInfo.mAlwaysConsumeNavBar); 1364 } 1365 return mLastWindowInsets; 1366 } 1367 1368 void dispatchApplyInsets(View host) { 1369 host.dispatchApplyWindowInsets(getWindowInsets(true /* forceConstruct */)); 1370 } 1371 1372 private static boolean shouldUseDisplaySize(final WindowManager.LayoutParams lp) { 1373 return lp.type == TYPE_STATUS_BAR_PANEL 1374 || lp.type == TYPE_INPUT_METHOD 1375 || lp.type == TYPE_VOLUME_OVERLAY; 1376 } 1377 1378 private int dipToPx(int dip) { 1379 final DisplayMetrics displayMetrics = mContext.getResources().getDisplayMetrics(); 1380 return (int) (displayMetrics.density * dip + 0.5f); 1381 } 1382 1383 private void performTraversals() { 1384 // cache mView since it is used so much below... 1385 final View host = mView; 1386 1387 if (DBG) { 1388 System.out.println("======================================"); 1389 System.out.println("performTraversals"); 1390 host.debug(); 1391 } 1392 1393 if (host == null || !mAdded) 1394 return; 1395 1396 mIsInTraversal = true; 1397 mWillDrawSoon = true; 1398 boolean windowSizeMayChange = false; 1399 boolean newSurface = false; 1400 boolean surfaceChanged = false; 1401 WindowManager.LayoutParams lp = mWindowAttributes; 1402 1403 int desiredWindowWidth; 1404 int desiredWindowHeight; 1405 1406 final int viewVisibility = getHostVisibility(); 1407 final boolean viewVisibilityChanged = !mFirst 1408 && (mViewVisibility != viewVisibility || mNewSurfaceNeeded); 1409 1410 WindowManager.LayoutParams params = null; 1411 if (mWindowAttributesChanged) { 1412 mWindowAttributesChanged = false; 1413 surfaceChanged = true; 1414 params = lp; 1415 } 1416 CompatibilityInfo compatibilityInfo = mDisplayAdjustments.getCompatibilityInfo(); 1417 if (compatibilityInfo.supportsScreen() == mLastInCompatMode) { 1418 params = lp; 1419 mFullRedrawNeeded = true; 1420 mLayoutRequested = true; 1421 if (mLastInCompatMode) { 1422 params.privateFlags &= ~WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 1423 mLastInCompatMode = false; 1424 } else { 1425 params.privateFlags |= WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 1426 mLastInCompatMode = true; 1427 } 1428 } 1429 1430 mWindowAttributesChangesFlag = 0; 1431 1432 Rect frame = mWinFrame; 1433 if (mFirst) { 1434 mFullRedrawNeeded = true; 1435 mLayoutRequested = true; 1436 1437 if (shouldUseDisplaySize(lp)) { 1438 // NOTE -- system code, won't try to do compat mode. 1439 Point size = new Point(); 1440 mDisplay.getRealSize(size); 1441 desiredWindowWidth = size.x; 1442 desiredWindowHeight = size.y; 1443 } else { 1444 Configuration config = mContext.getResources().getConfiguration(); 1445 desiredWindowWidth = dipToPx(config.screenWidthDp); 1446 desiredWindowHeight = dipToPx(config.screenHeightDp); 1447 } 1448 1449 // We used to use the following condition to choose 32 bits drawing caches: 1450 // PixelFormat.hasAlpha(lp.format) || lp.format == PixelFormat.RGBX_8888 1451 // However, windows are now always 32 bits by default, so choose 32 bits 1452 mAttachInfo.mUse32BitDrawingCache = true; 1453 mAttachInfo.mHasWindowFocus = false; 1454 mAttachInfo.mWindowVisibility = viewVisibility; 1455 mAttachInfo.mRecomputeGlobalAttributes = false; 1456 mLastConfiguration.setTo(host.getResources().getConfiguration()); 1457 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1458 // Set the layout direction if it has not been set before (inherit is the default) 1459 if (mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 1460 host.setLayoutDirection(mLastConfiguration.getLayoutDirection()); 1461 } 1462 host.dispatchAttachedToWindow(mAttachInfo, 0); 1463 mAttachInfo.mTreeObserver.dispatchOnWindowAttachedChange(true); 1464 dispatchApplyInsets(host); 1465 //Log.i(mTag, "Screen on initialized: " + attachInfo.mKeepScreenOn); 1466 1467 } else { 1468 desiredWindowWidth = frame.width(); 1469 desiredWindowHeight = frame.height(); 1470 if (desiredWindowWidth != mWidth || desiredWindowHeight != mHeight) { 1471 if (DEBUG_ORIENTATION) Log.v(mTag, "View " + host + " resized to: " + frame); 1472 mFullRedrawNeeded = true; 1473 mLayoutRequested = true; 1474 windowSizeMayChange = true; 1475 } 1476 } 1477 1478 if (viewVisibilityChanged) { 1479 mAttachInfo.mWindowVisibility = viewVisibility; 1480 host.dispatchWindowVisibilityChanged(viewVisibility); 1481 host.dispatchVisibilityAggregated(viewVisibility == View.VISIBLE); 1482 if (viewVisibility != View.VISIBLE || mNewSurfaceNeeded) { 1483 endDragResizing(); 1484 destroyHardwareResources(); 1485 } 1486 if (viewVisibility == View.GONE) { 1487 // After making a window gone, we will count it as being 1488 // shown for the first time the next time it gets focus. 1489 mHasHadWindowFocus = false; 1490 } 1491 } 1492 1493 // Non-visible windows can't hold accessibility focus. 1494 if (mAttachInfo.mWindowVisibility != View.VISIBLE) { 1495 host.clearAccessibilityFocus(); 1496 } 1497 1498 // Execute enqueued actions on every traversal in case a detached view enqueued an action 1499 getRunQueue().executeActions(mAttachInfo.mHandler); 1500 1501 boolean insetsChanged = false; 1502 1503 boolean layoutRequested = mLayoutRequested && (!mStopped || mReportNextDraw); 1504 if (layoutRequested) { 1505 1506 final Resources res = mView.getContext().getResources(); 1507 1508 if (mFirst) { 1509 // make sure touch mode code executes by setting cached value 1510 // to opposite of the added touch mode. 1511 mAttachInfo.mInTouchMode = !mAddedTouchMode; 1512 ensureTouchModeLocally(mAddedTouchMode); 1513 } else { 1514 if (!mPendingOverscanInsets.equals(mAttachInfo.mOverscanInsets)) { 1515 insetsChanged = true; 1516 } 1517 if (!mPendingContentInsets.equals(mAttachInfo.mContentInsets)) { 1518 insetsChanged = true; 1519 } 1520 if (!mPendingStableInsets.equals(mAttachInfo.mStableInsets)) { 1521 insetsChanged = true; 1522 } 1523 if (!mPendingVisibleInsets.equals(mAttachInfo.mVisibleInsets)) { 1524 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1525 if (DEBUG_LAYOUT) Log.v(mTag, "Visible insets changing to: " 1526 + mAttachInfo.mVisibleInsets); 1527 } 1528 if (!mPendingOutsets.equals(mAttachInfo.mOutsets)) { 1529 insetsChanged = true; 1530 } 1531 if (mPendingAlwaysConsumeNavBar != mAttachInfo.mAlwaysConsumeNavBar) { 1532 insetsChanged = true; 1533 } 1534 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT 1535 || lp.height == ViewGroup.LayoutParams.WRAP_CONTENT) { 1536 windowSizeMayChange = true; 1537 1538 if (shouldUseDisplaySize(lp)) { 1539 // NOTE -- system code, won't try to do compat mode. 1540 Point size = new Point(); 1541 mDisplay.getRealSize(size); 1542 desiredWindowWidth = size.x; 1543 desiredWindowHeight = size.y; 1544 } else { 1545 Configuration config = res.getConfiguration(); 1546 desiredWindowWidth = dipToPx(config.screenWidthDp); 1547 desiredWindowHeight = dipToPx(config.screenHeightDp); 1548 } 1549 } 1550 } 1551 1552 // Ask host how big it wants to be 1553 windowSizeMayChange |= measureHierarchy(host, lp, res, 1554 desiredWindowWidth, desiredWindowHeight); 1555 } 1556 1557 if (collectViewAttributes()) { 1558 params = lp; 1559 } 1560 if (mAttachInfo.mForceReportNewAttributes) { 1561 mAttachInfo.mForceReportNewAttributes = false; 1562 params = lp; 1563 } 1564 1565 if (mFirst || mAttachInfo.mViewVisibilityChanged) { 1566 mAttachInfo.mViewVisibilityChanged = false; 1567 int resizeMode = mSoftInputMode & 1568 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST; 1569 // If we are in auto resize mode, then we need to determine 1570 // what mode to use now. 1571 if (resizeMode == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 1572 final int N = mAttachInfo.mScrollContainers.size(); 1573 for (int i=0; i<N; i++) { 1574 if (mAttachInfo.mScrollContainers.get(i).isShown()) { 1575 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE; 1576 } 1577 } 1578 if (resizeMode == 0) { 1579 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_PAN; 1580 } 1581 if ((lp.softInputMode & 1582 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) != resizeMode) { 1583 lp.softInputMode = (lp.softInputMode & 1584 ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) | 1585 resizeMode; 1586 params = lp; 1587 } 1588 } 1589 } 1590 1591 if (params != null) { 1592 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 1593 if (!PixelFormat.formatHasAlpha(params.format)) { 1594 params.format = PixelFormat.TRANSLUCENT; 1595 } 1596 } 1597 mAttachInfo.mOverscanRequested = (params.flags 1598 & WindowManager.LayoutParams.FLAG_LAYOUT_IN_OVERSCAN) != 0; 1599 } 1600 1601 if (mApplyInsetsRequested) { 1602 mApplyInsetsRequested = false; 1603 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1604 dispatchApplyInsets(host); 1605 if (mLayoutRequested) { 1606 // Short-circuit catching a new layout request here, so 1607 // we don't need to go through two layout passes when things 1608 // change due to fitting system windows, which can happen a lot. 1609 windowSizeMayChange |= measureHierarchy(host, lp, 1610 mView.getContext().getResources(), 1611 desiredWindowWidth, desiredWindowHeight); 1612 } 1613 } 1614 1615 if (layoutRequested) { 1616 // Clear this now, so that if anything requests a layout in the 1617 // rest of this function we will catch it and re-run a full 1618 // layout pass. 1619 mLayoutRequested = false; 1620 } 1621 1622 boolean windowShouldResize = layoutRequested && windowSizeMayChange 1623 && ((mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) 1624 || (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT && 1625 frame.width() < desiredWindowWidth && frame.width() != mWidth) 1626 || (lp.height == ViewGroup.LayoutParams.WRAP_CONTENT && 1627 frame.height() < desiredWindowHeight && frame.height() != mHeight)); 1628 windowShouldResize |= mDragResizing && mResizeMode == RESIZE_MODE_FREEFORM; 1629 1630 // If the activity was just relaunched, it might have unfrozen the task bounds (while 1631 // relaunching), so we need to force a call into window manager to pick up the latest 1632 // bounds. 1633 windowShouldResize |= mActivityRelaunched; 1634 1635 // Determine whether to compute insets. 1636 // If there are no inset listeners remaining then we may still need to compute 1637 // insets in case the old insets were non-empty and must be reset. 1638 final boolean computesInternalInsets = 1639 mAttachInfo.mTreeObserver.hasComputeInternalInsetsListeners() 1640 || mAttachInfo.mHasNonEmptyGivenInternalInsets; 1641 1642 boolean insetsPending = false; 1643 int relayoutResult = 0; 1644 1645 final boolean isViewVisible = viewVisibility == View.VISIBLE; 1646 if (mFirst || windowShouldResize || insetsChanged || 1647 viewVisibilityChanged || params != null || mForceNextWindowRelayout) { 1648 mForceNextWindowRelayout = false; 1649 1650 if (isViewVisible) { 1651 // If this window is giving internal insets to the window 1652 // manager, and it is being added or changing its visibility, 1653 // then we want to first give the window manager "fake" 1654 // insets to cause it to effectively ignore the content of 1655 // the window during layout. This avoids it briefly causing 1656 // other windows to resize/move based on the raw frame of the 1657 // window, waiting until we can finish laying out this window 1658 // and get back to the window manager with the ultimately 1659 // computed insets. 1660 insetsPending = computesInternalInsets && (mFirst || viewVisibilityChanged); 1661 } 1662 1663 if (mSurfaceHolder != null) { 1664 mSurfaceHolder.mSurfaceLock.lock(); 1665 mDrawingAllowed = true; 1666 } 1667 1668 boolean hwInitialized = false; 1669 boolean contentInsetsChanged = false; 1670 boolean hadSurface = mSurface.isValid(); 1671 1672 try { 1673 if (DEBUG_LAYOUT) { 1674 Log.i(mTag, "host=w:" + host.getMeasuredWidth() + ", h:" + 1675 host.getMeasuredHeight() + ", params=" + params); 1676 } 1677 1678 if (mAttachInfo.mHardwareRenderer != null) { 1679 // relayoutWindow may decide to destroy mSurface. As that decision 1680 // happens in WindowManager service, we need to be defensive here 1681 // and stop using the surface in case it gets destroyed. 1682 if (mAttachInfo.mHardwareRenderer.pauseSurface(mSurface)) { 1683 // Animations were running so we need to push a frame 1684 // to resume them 1685 mDirty.set(0, 0, mWidth, mHeight); 1686 } 1687 mChoreographer.mFrameInfo.addFlags(FrameInfo.FLAG_WINDOW_LAYOUT_CHANGED); 1688 } 1689 final int surfaceGenerationId = mSurface.getGenerationId(); 1690 relayoutResult = relayoutWindow(params, viewVisibility, insetsPending); 1691 1692 if (DEBUG_LAYOUT) Log.v(mTag, "relayout: frame=" + frame.toShortString() 1693 + " overscan=" + mPendingOverscanInsets.toShortString() 1694 + " content=" + mPendingContentInsets.toShortString() 1695 + " visible=" + mPendingVisibleInsets.toShortString() 1696 + " visible=" + mPendingStableInsets.toShortString() 1697 + " outsets=" + mPendingOutsets.toShortString() 1698 + " surface=" + mSurface); 1699 1700 if (mPendingConfiguration.seq != 0) { 1701 if (DEBUG_CONFIGURATION) Log.v(mTag, "Visible with new config: " 1702 + mPendingConfiguration); 1703 updateConfiguration(new Configuration(mPendingConfiguration), !mFirst); 1704 mPendingConfiguration.seq = 0; 1705 } 1706 1707 final boolean overscanInsetsChanged = !mPendingOverscanInsets.equals( 1708 mAttachInfo.mOverscanInsets); 1709 contentInsetsChanged = !mPendingContentInsets.equals( 1710 mAttachInfo.mContentInsets); 1711 final boolean visibleInsetsChanged = !mPendingVisibleInsets.equals( 1712 mAttachInfo.mVisibleInsets); 1713 final boolean stableInsetsChanged = !mPendingStableInsets.equals( 1714 mAttachInfo.mStableInsets); 1715 final boolean outsetsChanged = !mPendingOutsets.equals(mAttachInfo.mOutsets); 1716 final boolean surfaceSizeChanged = (relayoutResult 1717 & WindowManagerGlobal.RELAYOUT_RES_SURFACE_RESIZED) != 0; 1718 final boolean alwaysConsumeNavBarChanged = 1719 mPendingAlwaysConsumeNavBar != mAttachInfo.mAlwaysConsumeNavBar; 1720 if (contentInsetsChanged) { 1721 mAttachInfo.mContentInsets.set(mPendingContentInsets); 1722 if (DEBUG_LAYOUT) Log.v(mTag, "Content insets changing to: " 1723 + mAttachInfo.mContentInsets); 1724 } 1725 if (overscanInsetsChanged) { 1726 mAttachInfo.mOverscanInsets.set(mPendingOverscanInsets); 1727 if (DEBUG_LAYOUT) Log.v(mTag, "Overscan insets changing to: " 1728 + mAttachInfo.mOverscanInsets); 1729 // Need to relayout with content insets. 1730 contentInsetsChanged = true; 1731 } 1732 if (stableInsetsChanged) { 1733 mAttachInfo.mStableInsets.set(mPendingStableInsets); 1734 if (DEBUG_LAYOUT) Log.v(mTag, "Decor insets changing to: " 1735 + mAttachInfo.mStableInsets); 1736 // Need to relayout with content insets. 1737 contentInsetsChanged = true; 1738 } 1739 if (alwaysConsumeNavBarChanged) { 1740 mAttachInfo.mAlwaysConsumeNavBar = mPendingAlwaysConsumeNavBar; 1741 contentInsetsChanged = true; 1742 } 1743 if (contentInsetsChanged || mLastSystemUiVisibility != 1744 mAttachInfo.mSystemUiVisibility || mApplyInsetsRequested 1745 || mLastOverscanRequested != mAttachInfo.mOverscanRequested 1746 || outsetsChanged) { 1747 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1748 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1749 mAttachInfo.mOutsets.set(mPendingOutsets); 1750 mApplyInsetsRequested = false; 1751 dispatchApplyInsets(host); 1752 } 1753 if (visibleInsetsChanged) { 1754 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1755 if (DEBUG_LAYOUT) Log.v(mTag, "Visible insets changing to: " 1756 + mAttachInfo.mVisibleInsets); 1757 } 1758 1759 if (!hadSurface) { 1760 if (mSurface.isValid()) { 1761 // If we are creating a new surface, then we need to 1762 // completely redraw it. Also, when we get to the 1763 // point of drawing it we will hold off and schedule 1764 // a new traversal instead. This is so we can tell the 1765 // window manager about all of the windows being displayed 1766 // before actually drawing them, so it can display then 1767 // all at once. 1768 newSurface = true; 1769 mFullRedrawNeeded = true; 1770 mPreviousTransparentRegion.setEmpty(); 1771 1772 // Only initialize up-front if transparent regions are not 1773 // requested, otherwise defer to see if the entire window 1774 // will be transparent 1775 if (mAttachInfo.mHardwareRenderer != null) { 1776 try { 1777 hwInitialized = mAttachInfo.mHardwareRenderer.initialize( 1778 mSurface); 1779 if (hwInitialized && (host.mPrivateFlags 1780 & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) == 0) { 1781 // Don't pre-allocate if transparent regions 1782 // are requested as they may not be needed 1783 mSurface.allocateBuffers(); 1784 } 1785 } catch (OutOfResourcesException e) { 1786 handleOutOfResourcesException(e); 1787 return; 1788 } 1789 } 1790 } 1791 } else if (!mSurface.isValid()) { 1792 // If the surface has been removed, then reset the scroll 1793 // positions. 1794 if (mLastScrolledFocus != null) { 1795 mLastScrolledFocus.clear(); 1796 } 1797 mScrollY = mCurScrollY = 0; 1798 if (mView instanceof RootViewSurfaceTaker) { 1799 ((RootViewSurfaceTaker) mView).onRootViewScrollYChanged(mCurScrollY); 1800 } 1801 if (mScroller != null) { 1802 mScroller.abortAnimation(); 1803 } 1804 // Our surface is gone 1805 if (mAttachInfo.mHardwareRenderer != null && 1806 mAttachInfo.mHardwareRenderer.isEnabled()) { 1807 mAttachInfo.mHardwareRenderer.destroy(); 1808 } 1809 } else if ((surfaceGenerationId != mSurface.getGenerationId() 1810 || surfaceSizeChanged) 1811 && mSurfaceHolder == null 1812 && mAttachInfo.mHardwareRenderer != null) { 1813 mFullRedrawNeeded = true; 1814 try { 1815 // Need to do updateSurface (which leads to CanvasContext::setSurface and 1816 // re-create the EGLSurface) if either the Surface changed (as indicated by 1817 // generation id), or WindowManager changed the surface size. The latter is 1818 // because on some chips, changing the consumer side's BufferQueue size may 1819 // not take effect immediately unless we create a new EGLSurface. 1820 // Note that frame size change doesn't always imply surface size change (eg. 1821 // drag resizing uses fullscreen surface), need to check surfaceSizeChanged 1822 // flag from WindowManager. 1823 mAttachInfo.mHardwareRenderer.updateSurface(mSurface); 1824 } catch (OutOfResourcesException e) { 1825 handleOutOfResourcesException(e); 1826 return; 1827 } 1828 } 1829 1830 final boolean freeformResizing = (relayoutResult 1831 & WindowManagerGlobal.RELAYOUT_RES_DRAG_RESIZING_FREEFORM) != 0; 1832 final boolean dockedResizing = (relayoutResult 1833 & WindowManagerGlobal.RELAYOUT_RES_DRAG_RESIZING_DOCKED) != 0; 1834 final boolean dragResizing = freeformResizing || dockedResizing; 1835 if (mDragResizing != dragResizing) { 1836 if (dragResizing) { 1837 mResizeMode = freeformResizing 1838 ? RESIZE_MODE_FREEFORM 1839 : RESIZE_MODE_DOCKED_DIVIDER; 1840 startDragResizing(mPendingBackDropFrame, 1841 mWinFrame.equals(mPendingBackDropFrame), mPendingVisibleInsets, 1842 mPendingStableInsets, mResizeMode); 1843 } else { 1844 // We shouldn't come here, but if we come we should end the resize. 1845 endDragResizing(); 1846 } 1847 } 1848 if (!USE_MT_RENDERER) { 1849 if (dragResizing) { 1850 mCanvasOffsetX = mWinFrame.left; 1851 mCanvasOffsetY = mWinFrame.top; 1852 } else { 1853 mCanvasOffsetX = mCanvasOffsetY = 0; 1854 } 1855 } 1856 } catch (RemoteException e) { 1857 } 1858 1859 if (DEBUG_ORIENTATION) Log.v( 1860 TAG, "Relayout returned: frame=" + frame + ", surface=" + mSurface); 1861 1862 mAttachInfo.mWindowLeft = frame.left; 1863 mAttachInfo.mWindowTop = frame.top; 1864 1865 // !!FIXME!! This next section handles the case where we did not get the 1866 // window size we asked for. We should avoid this by getting a maximum size from 1867 // the window session beforehand. 1868 if (mWidth != frame.width() || mHeight != frame.height()) { 1869 mWidth = frame.width(); 1870 mHeight = frame.height(); 1871 } 1872 1873 if (mSurfaceHolder != null) { 1874 // The app owns the surface; tell it about what is going on. 1875 if (mSurface.isValid()) { 1876 // XXX .copyFrom() doesn't work! 1877 //mSurfaceHolder.mSurface.copyFrom(mSurface); 1878 mSurfaceHolder.mSurface = mSurface; 1879 } 1880 mSurfaceHolder.setSurfaceFrameSize(mWidth, mHeight); 1881 mSurfaceHolder.mSurfaceLock.unlock(); 1882 if (mSurface.isValid()) { 1883 if (!hadSurface) { 1884 mSurfaceHolder.ungetCallbacks(); 1885 1886 mIsCreating = true; 1887 mSurfaceHolderCallback.surfaceCreated(mSurfaceHolder); 1888 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1889 if (callbacks != null) { 1890 for (SurfaceHolder.Callback c : callbacks) { 1891 c.surfaceCreated(mSurfaceHolder); 1892 } 1893 } 1894 surfaceChanged = true; 1895 } 1896 if (surfaceChanged) { 1897 mSurfaceHolderCallback.surfaceChanged(mSurfaceHolder, 1898 lp.format, mWidth, mHeight); 1899 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1900 if (callbacks != null) { 1901 for (SurfaceHolder.Callback c : callbacks) { 1902 c.surfaceChanged(mSurfaceHolder, lp.format, 1903 mWidth, mHeight); 1904 } 1905 } 1906 } 1907 mIsCreating = false; 1908 } else if (hadSurface) { 1909 mSurfaceHolder.ungetCallbacks(); 1910 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1911 mSurfaceHolderCallback.surfaceDestroyed(mSurfaceHolder); 1912 if (callbacks != null) { 1913 for (SurfaceHolder.Callback c : callbacks) { 1914 c.surfaceDestroyed(mSurfaceHolder); 1915 } 1916 } 1917 mSurfaceHolder.mSurfaceLock.lock(); 1918 try { 1919 mSurfaceHolder.mSurface = new Surface(); 1920 } finally { 1921 mSurfaceHolder.mSurfaceLock.unlock(); 1922 } 1923 } 1924 } 1925 1926 final ThreadedRenderer hardwareRenderer = mAttachInfo.mHardwareRenderer; 1927 if (hardwareRenderer != null && hardwareRenderer.isEnabled()) { 1928 if (hwInitialized 1929 || mWidth != hardwareRenderer.getWidth() 1930 || mHeight != hardwareRenderer.getHeight()) { 1931 hardwareRenderer.setup(mWidth, mHeight, mAttachInfo, 1932 mWindowAttributes.surfaceInsets); 1933 } 1934 } 1935 1936 if (!mStopped || mReportNextDraw) { 1937 boolean focusChangedDueToTouchMode = ensureTouchModeLocally( 1938 (relayoutResult&WindowManagerGlobal.RELAYOUT_RES_IN_TOUCH_MODE) != 0); 1939 if (focusChangedDueToTouchMode || mWidth != host.getMeasuredWidth() 1940 || mHeight != host.getMeasuredHeight() || contentInsetsChanged) { 1941 int childWidthMeasureSpec = getRootMeasureSpec(mWidth, lp.width); 1942 int childHeightMeasureSpec = getRootMeasureSpec(mHeight, lp.height); 1943 1944 if (DEBUG_LAYOUT) Log.v(mTag, "Ooops, something changed! mWidth=" 1945 + mWidth + " measuredWidth=" + host.getMeasuredWidth() 1946 + " mHeight=" + mHeight 1947 + " measuredHeight=" + host.getMeasuredHeight() 1948 + " coveredInsetsChanged=" + contentInsetsChanged); 1949 1950 // Ask host how big it wants to be 1951 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1952 1953 // Implementation of weights from WindowManager.LayoutParams 1954 // We just grow the dimensions as needed and re-measure if 1955 // needs be 1956 int width = host.getMeasuredWidth(); 1957 int height = host.getMeasuredHeight(); 1958 boolean measureAgain = false; 1959 1960 if (lp.horizontalWeight > 0.0f) { 1961 width += (int) ((mWidth - width) * lp.horizontalWeight); 1962 childWidthMeasureSpec = MeasureSpec.makeMeasureSpec(width, 1963 MeasureSpec.EXACTLY); 1964 measureAgain = true; 1965 } 1966 if (lp.verticalWeight > 0.0f) { 1967 height += (int) ((mHeight - height) * lp.verticalWeight); 1968 childHeightMeasureSpec = MeasureSpec.makeMeasureSpec(height, 1969 MeasureSpec.EXACTLY); 1970 measureAgain = true; 1971 } 1972 1973 if (measureAgain) { 1974 if (DEBUG_LAYOUT) Log.v(mTag, 1975 "And hey let's measure once more: width=" + width 1976 + " height=" + height); 1977 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1978 } 1979 1980 layoutRequested = true; 1981 } 1982 } 1983 } else { 1984 // Not the first pass and no window/insets/visibility change but the window 1985 // may have moved and we need check that and if so to update the left and right 1986 // in the attach info. We translate only the window frame since on window move 1987 // the window manager tells us only for the new frame but the insets are the 1988 // same and we do not want to translate them more than once. 1989 maybeHandleWindowMove(frame); 1990 } 1991 1992 final boolean didLayout = layoutRequested && (!mStopped || mReportNextDraw); 1993 boolean triggerGlobalLayoutListener = didLayout 1994 || mAttachInfo.mRecomputeGlobalAttributes; 1995 if (didLayout) { 1996 performLayout(lp, mWidth, mHeight); 1997 1998 // By this point all views have been sized and positioned 1999 // We can compute the transparent area 2000 2001 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 2002 // start out transparent 2003 // TODO: AVOID THAT CALL BY CACHING THE RESULT? 2004 host.getLocationInWindow(mTmpLocation); 2005 mTransparentRegion.set(mTmpLocation[0], mTmpLocation[1], 2006 mTmpLocation[0] + host.mRight - host.mLeft, 2007 mTmpLocation[1] + host.mBottom - host.mTop); 2008 2009 host.gatherTransparentRegion(mTransparentRegion); 2010 if (mTranslator != null) { 2011 mTranslator.translateRegionInWindowToScreen(mTransparentRegion); 2012 } 2013 2014 if (!mTransparentRegion.equals(mPreviousTransparentRegion)) { 2015 mPreviousTransparentRegion.set(mTransparentRegion); 2016 mFullRedrawNeeded = true; 2017 // reconfigure window manager 2018 try { 2019 mWindowSession.setTransparentRegion(mWindow, mTransparentRegion); 2020 } catch (RemoteException e) { 2021 } 2022 } 2023 } 2024 2025 if (DBG) { 2026 System.out.println("======================================"); 2027 System.out.println("performTraversals -- after setFrame"); 2028 host.debug(); 2029 } 2030 } 2031 2032 if (triggerGlobalLayoutListener) { 2033 mAttachInfo.mRecomputeGlobalAttributes = false; 2034 mAttachInfo.mTreeObserver.dispatchOnGlobalLayout(); 2035 } 2036 2037 if (computesInternalInsets) { 2038 // Clear the original insets. 2039 final ViewTreeObserver.InternalInsetsInfo insets = mAttachInfo.mGivenInternalInsets; 2040 insets.reset(); 2041 2042 // Compute new insets in place. 2043 mAttachInfo.mTreeObserver.dispatchOnComputeInternalInsets(insets); 2044 mAttachInfo.mHasNonEmptyGivenInternalInsets = !insets.isEmpty(); 2045 2046 // Tell the window manager. 2047 if (insetsPending || !mLastGivenInsets.equals(insets)) { 2048 mLastGivenInsets.set(insets); 2049 2050 // Translate insets to screen coordinates if needed. 2051 final Rect contentInsets; 2052 final Rect visibleInsets; 2053 final Region touchableRegion; 2054 if (mTranslator != null) { 2055 contentInsets = mTranslator.getTranslatedContentInsets(insets.contentInsets); 2056 visibleInsets = mTranslator.getTranslatedVisibleInsets(insets.visibleInsets); 2057 touchableRegion = mTranslator.getTranslatedTouchableArea(insets.touchableRegion); 2058 } else { 2059 contentInsets = insets.contentInsets; 2060 visibleInsets = insets.visibleInsets; 2061 touchableRegion = insets.touchableRegion; 2062 } 2063 2064 try { 2065 mWindowSession.setInsets(mWindow, insets.mTouchableInsets, 2066 contentInsets, visibleInsets, touchableRegion); 2067 } catch (RemoteException e) { 2068 } 2069 } 2070 } 2071 2072 if (mFirst) { 2073 // handle first focus request 2074 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "First: mView.hasFocus()=" 2075 + mView.hasFocus()); 2076 if (mView != null) { 2077 if (!mView.hasFocus()) { 2078 mView.requestFocus(View.FOCUS_FORWARD); 2079 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "First: requested focused view=" 2080 + mView.findFocus()); 2081 } else { 2082 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "First: existing focused view=" 2083 + mView.findFocus()); 2084 } 2085 } 2086 } 2087 2088 final boolean changedVisibility = (viewVisibilityChanged || mFirst) && isViewVisible; 2089 final boolean hasWindowFocus = mAttachInfo.mHasWindowFocus && isViewVisible; 2090 final boolean regainedFocus = hasWindowFocus && mLostWindowFocus; 2091 if (regainedFocus) { 2092 mLostWindowFocus = false; 2093 } else if (!hasWindowFocus && mHadWindowFocus) { 2094 mLostWindowFocus = true; 2095 } 2096 2097 if (changedVisibility || regainedFocus) { 2098 host.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 2099 } 2100 2101 mFirst = false; 2102 mWillDrawSoon = false; 2103 mNewSurfaceNeeded = false; 2104 mActivityRelaunched = false; 2105 mViewVisibility = viewVisibility; 2106 mHadWindowFocus = hasWindowFocus; 2107 2108 if (hasWindowFocus && !isInLocalFocusMode()) { 2109 final boolean imTarget = WindowManager.LayoutParams 2110 .mayUseInputMethod(mWindowAttributes.flags); 2111 if (imTarget != mLastWasImTarget) { 2112 mLastWasImTarget = imTarget; 2113 InputMethodManager imm = InputMethodManager.peekInstance(); 2114 if (imm != null && imTarget) { 2115 imm.onPreWindowFocus(mView, hasWindowFocus); 2116 imm.onPostWindowFocus(mView, mView.findFocus(), 2117 mWindowAttributes.softInputMode, 2118 !mHasHadWindowFocus, mWindowAttributes.flags); 2119 } 2120 } 2121 } 2122 2123 // Remember if we must report the next draw. 2124 if ((relayoutResult & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 2125 mReportNextDraw = true; 2126 } 2127 2128 boolean cancelDraw = mAttachInfo.mTreeObserver.dispatchOnPreDraw() || !isViewVisible; 2129 2130 if (!cancelDraw && !newSurface) { 2131 if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 2132 for (int i = 0; i < mPendingTransitions.size(); ++i) { 2133 mPendingTransitions.get(i).startChangingAnimations(); 2134 } 2135 mPendingTransitions.clear(); 2136 } 2137 2138 performDraw(); 2139 } else { 2140 if (isViewVisible) { 2141 // Try again 2142 scheduleTraversals(); 2143 } else if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 2144 for (int i = 0; i < mPendingTransitions.size(); ++i) { 2145 mPendingTransitions.get(i).endChangingAnimations(); 2146 } 2147 mPendingTransitions.clear(); 2148 } 2149 } 2150 2151 mIsInTraversal = false; 2152 } 2153 2154 private void maybeHandleWindowMove(Rect frame) { 2155 2156 // TODO: Well, we are checking whether the frame has changed similarly 2157 // to how this is done for the insets. This is however incorrect since 2158 // the insets and the frame are translated. For example, the old frame 2159 // was (1, 1 - 1, 1) and was translated to say (2, 2 - 2, 2), now the new 2160 // reported frame is (2, 2 - 2, 2) which implies no change but this is not 2161 // true since we are comparing a not translated value to a translated one. 2162 // This scenario is rare but we may want to fix that. 2163 2164 final boolean windowMoved = mAttachInfo.mWindowLeft != frame.left 2165 || mAttachInfo.mWindowTop != frame.top; 2166 if (windowMoved) { 2167 if (mTranslator != null) { 2168 mTranslator.translateRectInScreenToAppWinFrame(frame); 2169 } 2170 mAttachInfo.mWindowLeft = frame.left; 2171 mAttachInfo.mWindowTop = frame.top; 2172 2173 // Update the light position for the new window offsets. 2174 if (mAttachInfo.mHardwareRenderer != null) { 2175 mAttachInfo.mHardwareRenderer.setLightCenter(mAttachInfo); 2176 } 2177 } 2178 } 2179 private void handleOutOfResourcesException(Surface.OutOfResourcesException e) { 2180 Log.e(mTag, "OutOfResourcesException initializing HW surface", e); 2181 try { 2182 if (!mWindowSession.outOfMemory(mWindow) && 2183 Process.myUid() != Process.SYSTEM_UID) { 2184 Slog.w(mTag, "No processes killed for memory; killing self"); 2185 Process.killProcess(Process.myPid()); 2186 } 2187 } catch (RemoteException ex) { 2188 } 2189 mLayoutRequested = true; // ask wm for a new surface next time. 2190 } 2191 2192 private void performMeasure(int childWidthMeasureSpec, int childHeightMeasureSpec) { 2193 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "measure"); 2194 try { 2195 mView.measure(childWidthMeasureSpec, childHeightMeasureSpec); 2196 } finally { 2197 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2198 } 2199 } 2200 2201 /** 2202 * Called by {@link android.view.View#isInLayout()} to determine whether the view hierarchy 2203 * is currently undergoing a layout pass. 2204 * 2205 * @return whether the view hierarchy is currently undergoing a layout pass 2206 */ 2207 boolean isInLayout() { 2208 return mInLayout; 2209 } 2210 2211 /** 2212 * Called by {@link android.view.View#requestLayout()} if the view hierarchy is currently 2213 * undergoing a layout pass. requestLayout() should not generally be called during layout, 2214 * unless the container hierarchy knows what it is doing (i.e., it is fine as long as 2215 * all children in that container hierarchy are measured and laid out at the end of the layout 2216 * pass for that container). If requestLayout() is called anyway, we handle it correctly 2217 * by registering all requesters during a frame as it proceeds. At the end of the frame, 2218 * we check all of those views to see if any still have pending layout requests, which 2219 * indicates that they were not correctly handled by their container hierarchy. If that is 2220 * the case, we clear all such flags in the tree, to remove the buggy flag state that leads 2221 * to blank containers, and force a second request/measure/layout pass in this frame. If 2222 * more requestLayout() calls are received during that second layout pass, we post those 2223 * requests to the next frame to avoid possible infinite loops. 2224 * 2225 * <p>The return value from this method indicates whether the request should proceed 2226 * (if it is a request during the first layout pass) or should be skipped and posted to the 2227 * next frame (if it is a request during the second layout pass).</p> 2228 * 2229 * @param view the view that requested the layout. 2230 * 2231 * @return true if request should proceed, false otherwise. 2232 */ 2233 boolean requestLayoutDuringLayout(final View view) { 2234 if (view.mParent == null || view.mAttachInfo == null) { 2235 // Would not normally trigger another layout, so just let it pass through as usual 2236 return true; 2237 } 2238 if (!mLayoutRequesters.contains(view)) { 2239 mLayoutRequesters.add(view); 2240 } 2241 if (!mHandlingLayoutInLayoutRequest) { 2242 // Let the request proceed normally; it will be processed in a second layout pass 2243 // if necessary 2244 return true; 2245 } else { 2246 // Don't let the request proceed during the second layout pass. 2247 // It will post to the next frame instead. 2248 return false; 2249 } 2250 } 2251 2252 private void performLayout(WindowManager.LayoutParams lp, int desiredWindowWidth, 2253 int desiredWindowHeight) { 2254 mLayoutRequested = false; 2255 mScrollMayChange = true; 2256 mInLayout = true; 2257 2258 final View host = mView; 2259 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) { 2260 Log.v(mTag, "Laying out " + host + " to (" + 2261 host.getMeasuredWidth() + ", " + host.getMeasuredHeight() + ")"); 2262 } 2263 2264 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "layout"); 2265 try { 2266 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 2267 2268 mInLayout = false; 2269 int numViewsRequestingLayout = mLayoutRequesters.size(); 2270 if (numViewsRequestingLayout > 0) { 2271 // requestLayout() was called during layout. 2272 // If no layout-request flags are set on the requesting views, there is no problem. 2273 // If some requests are still pending, then we need to clear those flags and do 2274 // a full request/measure/layout pass to handle this situation. 2275 ArrayList<View> validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, 2276 false); 2277 if (validLayoutRequesters != null) { 2278 // Set this flag to indicate that any further requests are happening during 2279 // the second pass, which may result in posting those requests to the next 2280 // frame instead 2281 mHandlingLayoutInLayoutRequest = true; 2282 2283 // Process fresh layout requests, then measure and layout 2284 int numValidRequests = validLayoutRequesters.size(); 2285 for (int i = 0; i < numValidRequests; ++i) { 2286 final View view = validLayoutRequesters.get(i); 2287 Log.w("View", "requestLayout() improperly called by " + view + 2288 " during layout: running second layout pass"); 2289 view.requestLayout(); 2290 } 2291 measureHierarchy(host, lp, mView.getContext().getResources(), 2292 desiredWindowWidth, desiredWindowHeight); 2293 mInLayout = true; 2294 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 2295 2296 mHandlingLayoutInLayoutRequest = false; 2297 2298 // Check the valid requests again, this time without checking/clearing the 2299 // layout flags, since requests happening during the second pass get noop'd 2300 validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, true); 2301 if (validLayoutRequesters != null) { 2302 final ArrayList<View> finalRequesters = validLayoutRequesters; 2303 // Post second-pass requests to the next frame 2304 getRunQueue().post(new Runnable() { 2305 @Override 2306 public void run() { 2307 int numValidRequests = finalRequesters.size(); 2308 for (int i = 0; i < numValidRequests; ++i) { 2309 final View view = finalRequesters.get(i); 2310 Log.w("View", "requestLayout() improperly called by " + view + 2311 " during second layout pass: posting in next frame"); 2312 view.requestLayout(); 2313 } 2314 } 2315 }); 2316 } 2317 } 2318 2319 } 2320 } finally { 2321 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2322 } 2323 mInLayout = false; 2324 } 2325 2326 /** 2327 * This method is called during layout when there have been calls to requestLayout() during 2328 * layout. It walks through the list of views that requested layout to determine which ones 2329 * still need it, based on visibility in the hierarchy and whether they have already been 2330 * handled (as is usually the case with ListView children). 2331 * 2332 * @param layoutRequesters The list of views that requested layout during layout 2333 * @param secondLayoutRequests Whether the requests were issued during the second layout pass. 2334 * If so, the FORCE_LAYOUT flag was not set on requesters. 2335 * @return A list of the actual views that still need to be laid out. 2336 */ 2337 private ArrayList<View> getValidLayoutRequesters(ArrayList<View> layoutRequesters, 2338 boolean secondLayoutRequests) { 2339 2340 int numViewsRequestingLayout = layoutRequesters.size(); 2341 ArrayList<View> validLayoutRequesters = null; 2342 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2343 View view = layoutRequesters.get(i); 2344 if (view != null && view.mAttachInfo != null && view.mParent != null && 2345 (secondLayoutRequests || (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) == 2346 View.PFLAG_FORCE_LAYOUT)) { 2347 boolean gone = false; 2348 View parent = view; 2349 // Only trigger new requests for views in a non-GONE hierarchy 2350 while (parent != null) { 2351 if ((parent.mViewFlags & View.VISIBILITY_MASK) == View.GONE) { 2352 gone = true; 2353 break; 2354 } 2355 if (parent.mParent instanceof View) { 2356 parent = (View) parent.mParent; 2357 } else { 2358 parent = null; 2359 } 2360 } 2361 if (!gone) { 2362 if (validLayoutRequesters == null) { 2363 validLayoutRequesters = new ArrayList<View>(); 2364 } 2365 validLayoutRequesters.add(view); 2366 } 2367 } 2368 } 2369 if (!secondLayoutRequests) { 2370 // If we're checking the layout flags, then we need to clean them up also 2371 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2372 View view = layoutRequesters.get(i); 2373 while (view != null && 2374 (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) != 0) { 2375 view.mPrivateFlags &= ~View.PFLAG_FORCE_LAYOUT; 2376 if (view.mParent instanceof View) { 2377 view = (View) view.mParent; 2378 } else { 2379 view = null; 2380 } 2381 } 2382 } 2383 } 2384 layoutRequesters.clear(); 2385 return validLayoutRequesters; 2386 } 2387 2388 @Override 2389 public void requestTransparentRegion(View child) { 2390 // the test below should not fail unless someone is messing with us 2391 checkThread(); 2392 if (mView == child) { 2393 mView.mPrivateFlags |= View.PFLAG_REQUEST_TRANSPARENT_REGIONS; 2394 // Need to make sure we re-evaluate the window attributes next 2395 // time around, to ensure the window has the correct format. 2396 mWindowAttributesChanged = true; 2397 mWindowAttributesChangesFlag = 0; 2398 requestLayout(); 2399 } 2400 } 2401 2402 /** 2403 * Figures out the measure spec for the root view in a window based on it's 2404 * layout params. 2405 * 2406 * @param windowSize 2407 * The available width or height of the window 2408 * 2409 * @param rootDimension 2410 * The layout params for one dimension (width or height) of the 2411 * window. 2412 * 2413 * @return The measure spec to use to measure the root view. 2414 */ 2415 private static int getRootMeasureSpec(int windowSize, int rootDimension) { 2416 int measureSpec; 2417 switch (rootDimension) { 2418 2419 case ViewGroup.LayoutParams.MATCH_PARENT: 2420 // Window can't resize. Force root view to be windowSize. 2421 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.EXACTLY); 2422 break; 2423 case ViewGroup.LayoutParams.WRAP_CONTENT: 2424 // Window can resize. Set max size for root view. 2425 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.AT_MOST); 2426 break; 2427 default: 2428 // Window wants to be an exact size. Force root view to be that size. 2429 measureSpec = MeasureSpec.makeMeasureSpec(rootDimension, MeasureSpec.EXACTLY); 2430 break; 2431 } 2432 return measureSpec; 2433 } 2434 2435 int mHardwareXOffset; 2436 int mHardwareYOffset; 2437 2438 @Override 2439 public void onHardwarePreDraw(DisplayListCanvas canvas) { 2440 canvas.translate(-mHardwareXOffset, -mHardwareYOffset); 2441 } 2442 2443 @Override 2444 public void onHardwarePostDraw(DisplayListCanvas canvas) { 2445 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2446 for (int i = mWindowCallbacks.size() - 1; i >= 0; i--) { 2447 mWindowCallbacks.get(i).onPostDraw(canvas); 2448 } 2449 } 2450 2451 /** 2452 * @hide 2453 */ 2454 void outputDisplayList(View view) { 2455 view.mRenderNode.output(); 2456 if (mAttachInfo.mHardwareRenderer != null) { 2457 ((ThreadedRenderer)mAttachInfo.mHardwareRenderer).serializeDisplayListTree(); 2458 } 2459 } 2460 2461 /** 2462 * @see #PROPERTY_PROFILE_RENDERING 2463 */ 2464 private void profileRendering(boolean enabled) { 2465 if (mProfileRendering) { 2466 mRenderProfilingEnabled = enabled; 2467 2468 if (mRenderProfiler != null) { 2469 mChoreographer.removeFrameCallback(mRenderProfiler); 2470 } 2471 if (mRenderProfilingEnabled) { 2472 if (mRenderProfiler == null) { 2473 mRenderProfiler = new Choreographer.FrameCallback() { 2474 @Override 2475 public void doFrame(long frameTimeNanos) { 2476 mDirty.set(0, 0, mWidth, mHeight); 2477 scheduleTraversals(); 2478 if (mRenderProfilingEnabled) { 2479 mChoreographer.postFrameCallback(mRenderProfiler); 2480 } 2481 } 2482 }; 2483 } 2484 mChoreographer.postFrameCallback(mRenderProfiler); 2485 } else { 2486 mRenderProfiler = null; 2487 } 2488 } 2489 } 2490 2491 /** 2492 * Called from draw() when DEBUG_FPS is enabled 2493 */ 2494 private void trackFPS() { 2495 // Tracks frames per second drawn. First value in a series of draws may be bogus 2496 // because it down not account for the intervening idle time 2497 long nowTime = System.currentTimeMillis(); 2498 if (mFpsStartTime < 0) { 2499 mFpsStartTime = mFpsPrevTime = nowTime; 2500 mFpsNumFrames = 0; 2501 } else { 2502 ++mFpsNumFrames; 2503 String thisHash = Integer.toHexString(System.identityHashCode(this)); 2504 long frameTime = nowTime - mFpsPrevTime; 2505 long totalTime = nowTime - mFpsStartTime; 2506 Log.v(mTag, "0x" + thisHash + "\tFrame time:\t" + frameTime); 2507 mFpsPrevTime = nowTime; 2508 if (totalTime > 1000) { 2509 float fps = (float) mFpsNumFrames * 1000 / totalTime; 2510 Log.v(mTag, "0x" + thisHash + "\tFPS:\t" + fps); 2511 mFpsStartTime = nowTime; 2512 mFpsNumFrames = 0; 2513 } 2514 } 2515 } 2516 2517 private void performDraw() { 2518 if (mAttachInfo.mDisplayState == Display.STATE_OFF && !mReportNextDraw) { 2519 return; 2520 } 2521 2522 final boolean fullRedrawNeeded = mFullRedrawNeeded; 2523 mFullRedrawNeeded = false; 2524 2525 mIsDrawing = true; 2526 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "draw"); 2527 try { 2528 draw(fullRedrawNeeded); 2529 } finally { 2530 mIsDrawing = false; 2531 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2532 } 2533 2534 // For whatever reason we didn't create a HardwareRenderer, end any 2535 // hardware animations that are now dangling 2536 if (mAttachInfo.mPendingAnimatingRenderNodes != null) { 2537 final int count = mAttachInfo.mPendingAnimatingRenderNodes.size(); 2538 for (int i = 0; i < count; i++) { 2539 mAttachInfo.mPendingAnimatingRenderNodes.get(i).endAllAnimators(); 2540 } 2541 mAttachInfo.mPendingAnimatingRenderNodes.clear(); 2542 } 2543 2544 if (mReportNextDraw) { 2545 mReportNextDraw = false; 2546 2547 // if we're using multi-thread renderer, wait for the window frame draws 2548 if (mWindowDrawCountDown != null) { 2549 try { 2550 mWindowDrawCountDown.await(); 2551 } catch (InterruptedException e) { 2552 Log.e(mTag, "Window redraw count down interruped!"); 2553 } 2554 mWindowDrawCountDown = null; 2555 } 2556 2557 if (mAttachInfo.mHardwareRenderer != null) { 2558 mAttachInfo.mHardwareRenderer.fence(); 2559 } 2560 2561 if (LOCAL_LOGV) { 2562 Log.v(mTag, "FINISHED DRAWING: " + mWindowAttributes.getTitle()); 2563 } 2564 if (mSurfaceHolder != null && mSurface.isValid()) { 2565 mSurfaceHolderCallback.surfaceRedrawNeeded(mSurfaceHolder); 2566 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 2567 if (callbacks != null) { 2568 for (SurfaceHolder.Callback c : callbacks) { 2569 if (c instanceof SurfaceHolder.Callback2) { 2570 ((SurfaceHolder.Callback2)c).surfaceRedrawNeeded(mSurfaceHolder); 2571 } 2572 } 2573 } 2574 } 2575 try { 2576 mWindowSession.finishDrawing(mWindow); 2577 } catch (RemoteException e) { 2578 } 2579 } 2580 } 2581 2582 private void draw(boolean fullRedrawNeeded) { 2583 Surface surface = mSurface; 2584 if (!surface.isValid()) { 2585 return; 2586 } 2587 2588 if (DEBUG_FPS) { 2589 trackFPS(); 2590 } 2591 2592 if (!sFirstDrawComplete) { 2593 synchronized (sFirstDrawHandlers) { 2594 sFirstDrawComplete = true; 2595 final int count = sFirstDrawHandlers.size(); 2596 for (int i = 0; i< count; i++) { 2597 mHandler.post(sFirstDrawHandlers.get(i)); 2598 } 2599 } 2600 } 2601 2602 scrollToRectOrFocus(null, false); 2603 2604 if (mAttachInfo.mViewScrollChanged) { 2605 mAttachInfo.mViewScrollChanged = false; 2606 mAttachInfo.mTreeObserver.dispatchOnScrollChanged(); 2607 } 2608 2609 boolean animating = mScroller != null && mScroller.computeScrollOffset(); 2610 final int curScrollY; 2611 if (animating) { 2612 curScrollY = mScroller.getCurrY(); 2613 } else { 2614 curScrollY = mScrollY; 2615 } 2616 if (mCurScrollY != curScrollY) { 2617 mCurScrollY = curScrollY; 2618 fullRedrawNeeded = true; 2619 if (mView instanceof RootViewSurfaceTaker) { 2620 ((RootViewSurfaceTaker) mView).onRootViewScrollYChanged(mCurScrollY); 2621 } 2622 } 2623 2624 final float appScale = mAttachInfo.mApplicationScale; 2625 final boolean scalingRequired = mAttachInfo.mScalingRequired; 2626 2627 int resizeAlpha = 0; 2628 2629 final Rect dirty = mDirty; 2630 if (mSurfaceHolder != null) { 2631 // The app owns the surface, we won't draw. 2632 dirty.setEmpty(); 2633 if (animating && mScroller != null) { 2634 mScroller.abortAnimation(); 2635 } 2636 return; 2637 } 2638 2639 if (fullRedrawNeeded) { 2640 mAttachInfo.mIgnoreDirtyState = true; 2641 dirty.set(0, 0, (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 2642 } 2643 2644 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2645 Log.v(mTag, "Draw " + mView + "/" 2646 + mWindowAttributes.getTitle() 2647 + ": dirty={" + dirty.left + "," + dirty.top 2648 + "," + dirty.right + "," + dirty.bottom + "} surface=" 2649 + surface + " surface.isValid()=" + surface.isValid() + ", appScale:" + 2650 appScale + ", width=" + mWidth + ", height=" + mHeight); 2651 } 2652 2653 mAttachInfo.mTreeObserver.dispatchOnDraw(); 2654 2655 int xOffset = -mCanvasOffsetX; 2656 int yOffset = -mCanvasOffsetY + curScrollY; 2657 final WindowManager.LayoutParams params = mWindowAttributes; 2658 final Rect surfaceInsets = params != null ? params.surfaceInsets : null; 2659 if (surfaceInsets != null) { 2660 xOffset -= surfaceInsets.left; 2661 yOffset -= surfaceInsets.top; 2662 2663 // Offset dirty rect for surface insets. 2664 dirty.offset(surfaceInsets.left, surfaceInsets.right); 2665 } 2666 2667 boolean accessibilityFocusDirty = false; 2668 final Drawable drawable = mAttachInfo.mAccessibilityFocusDrawable; 2669 if (drawable != null) { 2670 final Rect bounds = mAttachInfo.mTmpInvalRect; 2671 final boolean hasFocus = getAccessibilityFocusedRect(bounds); 2672 if (!hasFocus) { 2673 bounds.setEmpty(); 2674 } 2675 if (!bounds.equals(drawable.getBounds())) { 2676 accessibilityFocusDirty = true; 2677 } 2678 } 2679 2680 mAttachInfo.mDrawingTime = 2681 mChoreographer.getFrameTimeNanos() / TimeUtils.NANOS_PER_MS; 2682 2683 if (!dirty.isEmpty() || mIsAnimating || accessibilityFocusDirty) { 2684 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled()) { 2685 // If accessibility focus moved, always invalidate the root. 2686 boolean invalidateRoot = accessibilityFocusDirty || mInvalidateRootRequested; 2687 mInvalidateRootRequested = false; 2688 2689 // Draw with hardware renderer. 2690 mIsAnimating = false; 2691 2692 if (mHardwareYOffset != yOffset || mHardwareXOffset != xOffset) { 2693 mHardwareYOffset = yOffset; 2694 mHardwareXOffset = xOffset; 2695 invalidateRoot = true; 2696 } 2697 2698 if (invalidateRoot) { 2699 mAttachInfo.mHardwareRenderer.invalidateRoot(); 2700 } 2701 2702 dirty.setEmpty(); 2703 2704 // Stage the content drawn size now. It will be transferred to the renderer 2705 // shortly before the draw commands get send to the renderer. 2706 final boolean updated = updateContentDrawBounds(); 2707 2708 mAttachInfo.mHardwareRenderer.draw(mView, mAttachInfo, this); 2709 2710 if (updated) { 2711 requestDrawWindow(); 2712 } 2713 } else { 2714 // If we get here with a disabled & requested hardware renderer, something went 2715 // wrong (an invalidate posted right before we destroyed the hardware surface 2716 // for instance) so we should just bail out. Locking the surface with software 2717 // rendering at this point would lock it forever and prevent hardware renderer 2718 // from doing its job when it comes back. 2719 // Before we request a new frame we must however attempt to reinitiliaze the 2720 // hardware renderer if it's in requested state. This would happen after an 2721 // eglTerminate() for instance. 2722 if (mAttachInfo.mHardwareRenderer != null && 2723 !mAttachInfo.mHardwareRenderer.isEnabled() && 2724 mAttachInfo.mHardwareRenderer.isRequested()) { 2725 2726 try { 2727 mAttachInfo.mHardwareRenderer.initializeIfNeeded( 2728 mWidth, mHeight, mAttachInfo, mSurface, surfaceInsets); 2729 } catch (OutOfResourcesException e) { 2730 handleOutOfResourcesException(e); 2731 return; 2732 } 2733 2734 mFullRedrawNeeded = true; 2735 scheduleTraversals(); 2736 return; 2737 } 2738 2739 if (!drawSoftware(surface, mAttachInfo, xOffset, yOffset, scalingRequired, dirty)) { 2740 return; 2741 } 2742 } 2743 } 2744 2745 if (animating) { 2746 mFullRedrawNeeded = true; 2747 scheduleTraversals(); 2748 } 2749 } 2750 2751 /** 2752 * @return true if drawing was successful, false if an error occurred 2753 */ 2754 private boolean drawSoftware(Surface surface, AttachInfo attachInfo, int xoff, int yoff, 2755 boolean scalingRequired, Rect dirty) { 2756 2757 // Draw with software renderer. 2758 final Canvas canvas; 2759 try { 2760 final int left = dirty.left; 2761 final int top = dirty.top; 2762 final int right = dirty.right; 2763 final int bottom = dirty.bottom; 2764 2765 canvas = mSurface.lockCanvas(dirty); 2766 2767 // The dirty rectangle can be modified by Surface.lockCanvas() 2768 //noinspection ConstantConditions 2769 if (left != dirty.left || top != dirty.top || right != dirty.right 2770 || bottom != dirty.bottom) { 2771 attachInfo.mIgnoreDirtyState = true; 2772 } 2773 2774 // TODO: Do this in native 2775 canvas.setDensity(mDensity); 2776 } catch (Surface.OutOfResourcesException e) { 2777 handleOutOfResourcesException(e); 2778 return false; 2779 } catch (IllegalArgumentException e) { 2780 Log.e(mTag, "Could not lock surface", e); 2781 // Don't assume this is due to out of memory, it could be 2782 // something else, and if it is something else then we could 2783 // kill stuff (or ourself) for no reason. 2784 mLayoutRequested = true; // ask wm for a new surface next time. 2785 return false; 2786 } 2787 2788 try { 2789 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2790 Log.v(mTag, "Surface " + surface + " drawing to bitmap w=" 2791 + canvas.getWidth() + ", h=" + canvas.getHeight()); 2792 //canvas.drawARGB(255, 255, 0, 0); 2793 } 2794 2795 // If this bitmap's format includes an alpha channel, we 2796 // need to clear it before drawing so that the child will 2797 // properly re-composite its drawing on a transparent 2798 // background. This automatically respects the clip/dirty region 2799 // or 2800 // If we are applying an offset, we need to clear the area 2801 // where the offset doesn't appear to avoid having garbage 2802 // left in the blank areas. 2803 if (!canvas.isOpaque() || yoff != 0 || xoff != 0) { 2804 canvas.drawColor(0, PorterDuff.Mode.CLEAR); 2805 } 2806 2807 dirty.setEmpty(); 2808 mIsAnimating = false; 2809 mView.mPrivateFlags |= View.PFLAG_DRAWN; 2810 2811 if (DEBUG_DRAW) { 2812 Context cxt = mView.getContext(); 2813 Log.i(mTag, "Drawing: package:" + cxt.getPackageName() + 2814 ", metrics=" + cxt.getResources().getDisplayMetrics() + 2815 ", compatibilityInfo=" + cxt.getResources().getCompatibilityInfo()); 2816 } 2817 try { 2818 canvas.translate(-xoff, -yoff); 2819 if (mTranslator != null) { 2820 mTranslator.translateCanvas(canvas); 2821 } 2822 canvas.setScreenDensity(scalingRequired ? mNoncompatDensity : 0); 2823 attachInfo.mSetIgnoreDirtyState = false; 2824 2825 mView.draw(canvas); 2826 2827 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2828 } finally { 2829 if (!attachInfo.mSetIgnoreDirtyState) { 2830 // Only clear the flag if it was not set during the mView.draw() call 2831 attachInfo.mIgnoreDirtyState = false; 2832 } 2833 } 2834 } finally { 2835 try { 2836 surface.unlockCanvasAndPost(canvas); 2837 } catch (IllegalArgumentException e) { 2838 Log.e(mTag, "Could not unlock surface", e); 2839 mLayoutRequested = true; // ask wm for a new surface next time. 2840 //noinspection ReturnInsideFinallyBlock 2841 return false; 2842 } 2843 2844 if (LOCAL_LOGV) { 2845 Log.v(mTag, "Surface " + surface + " unlockCanvasAndPost"); 2846 } 2847 } 2848 return true; 2849 } 2850 2851 /** 2852 * We want to draw a highlight around the current accessibility focused. 2853 * Since adding a style for all possible view is not a viable option we 2854 * have this specialized drawing method. 2855 * 2856 * Note: We are doing this here to be able to draw the highlight for 2857 * virtual views in addition to real ones. 2858 * 2859 * @param canvas The canvas on which to draw. 2860 */ 2861 private void drawAccessibilityFocusedDrawableIfNeeded(Canvas canvas) { 2862 final Rect bounds = mAttachInfo.mTmpInvalRect; 2863 if (getAccessibilityFocusedRect(bounds)) { 2864 final Drawable drawable = getAccessibilityFocusedDrawable(); 2865 if (drawable != null) { 2866 drawable.setBounds(bounds); 2867 drawable.draw(canvas); 2868 } 2869 } else if (mAttachInfo.mAccessibilityFocusDrawable != null) { 2870 mAttachInfo.mAccessibilityFocusDrawable.setBounds(0, 0, 0, 0); 2871 } 2872 } 2873 2874 private boolean getAccessibilityFocusedRect(Rect bounds) { 2875 final AccessibilityManager manager = AccessibilityManager.getInstance(mView.mContext); 2876 if (!manager.isEnabled() || !manager.isTouchExplorationEnabled()) { 2877 return false; 2878 } 2879 2880 final View host = mAccessibilityFocusedHost; 2881 if (host == null || host.mAttachInfo == null) { 2882 return false; 2883 } 2884 2885 final AccessibilityNodeProvider provider = host.getAccessibilityNodeProvider(); 2886 if (provider == null) { 2887 host.getBoundsOnScreen(bounds, true); 2888 } else if (mAccessibilityFocusedVirtualView != null) { 2889 mAccessibilityFocusedVirtualView.getBoundsInScreen(bounds); 2890 } else { 2891 return false; 2892 } 2893 2894 // Transform the rect into window-relative coordinates. 2895 final AttachInfo attachInfo = mAttachInfo; 2896 bounds.offset(0, attachInfo.mViewRootImpl.mScrollY); 2897 bounds.offset(-attachInfo.mWindowLeft, -attachInfo.mWindowTop); 2898 if (!bounds.intersect(0, 0, attachInfo.mViewRootImpl.mWidth, 2899 attachInfo.mViewRootImpl.mHeight)) { 2900 // If no intersection, set bounds to empty. 2901 bounds.setEmpty(); 2902 } 2903 return !bounds.isEmpty(); 2904 } 2905 2906 private Drawable getAccessibilityFocusedDrawable() { 2907 // Lazily load the accessibility focus drawable. 2908 if (mAttachInfo.mAccessibilityFocusDrawable == null) { 2909 final TypedValue value = new TypedValue(); 2910 final boolean resolved = mView.mContext.getTheme().resolveAttribute( 2911 R.attr.accessibilityFocusedDrawable, value, true); 2912 if (resolved) { 2913 mAttachInfo.mAccessibilityFocusDrawable = 2914 mView.mContext.getDrawable(value.resourceId); 2915 } 2916 } 2917 return mAttachInfo.mAccessibilityFocusDrawable; 2918 } 2919 2920 /** 2921 * Requests that the root render node is invalidated next time we perform a draw, such that 2922 * {@link WindowCallbacks#onPostDraw} gets called. 2923 */ 2924 public void requestInvalidateRootRenderNode() { 2925 mInvalidateRootRequested = true; 2926 } 2927 2928 boolean scrollToRectOrFocus(Rect rectangle, boolean immediate) { 2929 final Rect ci = mAttachInfo.mContentInsets; 2930 final Rect vi = mAttachInfo.mVisibleInsets; 2931 int scrollY = 0; 2932 boolean handled = false; 2933 2934 if (vi.left > ci.left || vi.top > ci.top 2935 || vi.right > ci.right || vi.bottom > ci.bottom) { 2936 // We'll assume that we aren't going to change the scroll 2937 // offset, since we want to avoid that unless it is actually 2938 // going to make the focus visible... otherwise we scroll 2939 // all over the place. 2940 scrollY = mScrollY; 2941 // We can be called for two different situations: during a draw, 2942 // to update the scroll position if the focus has changed (in which 2943 // case 'rectangle' is null), or in response to a 2944 // requestChildRectangleOnScreen() call (in which case 'rectangle' 2945 // is non-null and we just want to scroll to whatever that 2946 // rectangle is). 2947 final View focus = mView.findFocus(); 2948 if (focus == null) { 2949 return false; 2950 } 2951 View lastScrolledFocus = (mLastScrolledFocus != null) ? mLastScrolledFocus.get() : null; 2952 if (focus != lastScrolledFocus) { 2953 // If the focus has changed, then ignore any requests to scroll 2954 // to a rectangle; first we want to make sure the entire focus 2955 // view is visible. 2956 rectangle = null; 2957 } 2958 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "Eval scroll: focus=" + focus 2959 + " rectangle=" + rectangle + " ci=" + ci 2960 + " vi=" + vi); 2961 if (focus == lastScrolledFocus && !mScrollMayChange && rectangle == null) { 2962 // Optimization: if the focus hasn't changed since last 2963 // time, and no layout has happened, then just leave things 2964 // as they are. 2965 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "Keeping scroll y=" 2966 + mScrollY + " vi=" + vi.toShortString()); 2967 } else { 2968 // We need to determine if the currently focused view is 2969 // within the visible part of the window and, if not, apply 2970 // a pan so it can be seen. 2971 mLastScrolledFocus = new WeakReference<View>(focus); 2972 mScrollMayChange = false; 2973 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "Need to scroll?"); 2974 // Try to find the rectangle from the focus view. 2975 if (focus.getGlobalVisibleRect(mVisRect, null)) { 2976 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "Root w=" 2977 + mView.getWidth() + " h=" + mView.getHeight() 2978 + " ci=" + ci.toShortString() 2979 + " vi=" + vi.toShortString()); 2980 if (rectangle == null) { 2981 focus.getFocusedRect(mTempRect); 2982 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "Focus " + focus 2983 + ": focusRect=" + mTempRect.toShortString()); 2984 if (mView instanceof ViewGroup) { 2985 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 2986 focus, mTempRect); 2987 } 2988 if (DEBUG_INPUT_RESIZE) Log.v(mTag, 2989 "Focus in window: focusRect=" 2990 + mTempRect.toShortString() 2991 + " visRect=" + mVisRect.toShortString()); 2992 } else { 2993 mTempRect.set(rectangle); 2994 if (DEBUG_INPUT_RESIZE) Log.v(mTag, 2995 "Request scroll to rect: " 2996 + mTempRect.toShortString() 2997 + " visRect=" + mVisRect.toShortString()); 2998 } 2999 if (mTempRect.intersect(mVisRect)) { 3000 if (DEBUG_INPUT_RESIZE) Log.v(mTag, 3001 "Focus window visible rect: " 3002 + mTempRect.toShortString()); 3003 if (mTempRect.height() > 3004 (mView.getHeight()-vi.top-vi.bottom)) { 3005 // If the focus simply is not going to fit, then 3006 // best is probably just to leave things as-is. 3007 if (DEBUG_INPUT_RESIZE) Log.v(mTag, 3008 "Too tall; leaving scrollY=" + scrollY); 3009 } else if ((mTempRect.top-scrollY) < vi.top) { 3010 scrollY -= vi.top - (mTempRect.top-scrollY); 3011 if (DEBUG_INPUT_RESIZE) Log.v(mTag, 3012 "Top covered; scrollY=" + scrollY); 3013 } else if ((mTempRect.bottom-scrollY) 3014 > (mView.getHeight()-vi.bottom)) { 3015 scrollY += (mTempRect.bottom-scrollY) 3016 - (mView.getHeight()-vi.bottom); 3017 if (DEBUG_INPUT_RESIZE) Log.v(mTag, 3018 "Bottom covered; scrollY=" + scrollY); 3019 } 3020 handled = true; 3021 } 3022 } 3023 } 3024 } 3025 3026 if (scrollY != mScrollY) { 3027 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "Pan scroll changed: old=" 3028 + mScrollY + " , new=" + scrollY); 3029 if (!immediate) { 3030 if (mScroller == null) { 3031 mScroller = new Scroller(mView.getContext()); 3032 } 3033 mScroller.startScroll(0, mScrollY, 0, scrollY-mScrollY); 3034 } else if (mScroller != null) { 3035 mScroller.abortAnimation(); 3036 } 3037 mScrollY = scrollY; 3038 } 3039 3040 return handled; 3041 } 3042 3043 /** 3044 * @hide 3045 */ 3046 public View getAccessibilityFocusedHost() { 3047 return mAccessibilityFocusedHost; 3048 } 3049 3050 /** 3051 * @hide 3052 */ 3053 public AccessibilityNodeInfo getAccessibilityFocusedVirtualView() { 3054 return mAccessibilityFocusedVirtualView; 3055 } 3056 3057 void setAccessibilityFocus(View view, AccessibilityNodeInfo node) { 3058 // If we have a virtual view with accessibility focus we need 3059 // to clear the focus and invalidate the virtual view bounds. 3060 if (mAccessibilityFocusedVirtualView != null) { 3061 3062 AccessibilityNodeInfo focusNode = mAccessibilityFocusedVirtualView; 3063 View focusHost = mAccessibilityFocusedHost; 3064 3065 // Wipe the state of the current accessibility focus since 3066 // the call into the provider to clear accessibility focus 3067 // will fire an accessibility event which will end up calling 3068 // this method and we want to have clean state when this 3069 // invocation happens. 3070 mAccessibilityFocusedHost = null; 3071 mAccessibilityFocusedVirtualView = null; 3072 3073 // Clear accessibility focus on the host after clearing state since 3074 // this method may be reentrant. 3075 focusHost.clearAccessibilityFocusNoCallbacks(); 3076 3077 AccessibilityNodeProvider provider = focusHost.getAccessibilityNodeProvider(); 3078 if (provider != null) { 3079 // Invalidate the area of the cleared accessibility focus. 3080 focusNode.getBoundsInParent(mTempRect); 3081 focusHost.invalidate(mTempRect); 3082 // Clear accessibility focus in the virtual node. 3083 final int virtualNodeId = AccessibilityNodeInfo.getVirtualDescendantId( 3084 focusNode.getSourceNodeId()); 3085 provider.performAction(virtualNodeId, 3086 AccessibilityNodeInfo.ACTION_CLEAR_ACCESSIBILITY_FOCUS, null); 3087 } 3088 focusNode.recycle(); 3089 } 3090 if (mAccessibilityFocusedHost != null) { 3091 // Clear accessibility focus in the view. 3092 mAccessibilityFocusedHost.clearAccessibilityFocusNoCallbacks(); 3093 } 3094 3095 // Set the new focus host and node. 3096 mAccessibilityFocusedHost = view; 3097 mAccessibilityFocusedVirtualView = node; 3098 3099 if (mAttachInfo.mHardwareRenderer != null) { 3100 mAttachInfo.mHardwareRenderer.invalidateRoot(); 3101 } 3102 } 3103 3104 void setPointerCapture(View view) { 3105 if (!mAttachInfo.mHasWindowFocus) { 3106 Log.w(mTag, "Can't set capture if it's not focused."); 3107 return; 3108 } 3109 if (mCapturingView == view) { 3110 return; 3111 } 3112 mCapturingView = view; 3113 InputManager.getInstance().setPointerIconDetached(true); 3114 } 3115 3116 void releasePointerCapture(View view) { 3117 if (mCapturingView != view || mCapturingView == null) { 3118 return; 3119 } 3120 3121 mCapturingView = null; 3122 InputManager.getInstance().setPointerIconDetached(false); 3123 } 3124 3125 boolean hasPointerCapture(View view) { 3126 return view != null && mCapturingView == view; 3127 } 3128 3129 @Override 3130 public void requestChildFocus(View child, View focused) { 3131 if (DEBUG_INPUT_RESIZE) { 3132 Log.v(mTag, "Request child focus: focus now " + focused); 3133 } 3134 checkThread(); 3135 scheduleTraversals(); 3136 } 3137 3138 @Override 3139 public void clearChildFocus(View child) { 3140 if (DEBUG_INPUT_RESIZE) { 3141 Log.v(mTag, "Clearing child focus"); 3142 } 3143 checkThread(); 3144 scheduleTraversals(); 3145 } 3146 3147 @Override 3148 public ViewParent getParentForAccessibility() { 3149 return null; 3150 } 3151 3152 @Override 3153 public void focusableViewAvailable(View v) { 3154 checkThread(); 3155 if (mView != null) { 3156 if (!mView.hasFocus()) { 3157 v.requestFocus(); 3158 } else { 3159 // the one case where will transfer focus away from the current one 3160 // is if the current view is a view group that prefers to give focus 3161 // to its children first AND the view is a descendant of it. 3162 View focused = mView.findFocus(); 3163 if (focused instanceof ViewGroup) { 3164 ViewGroup group = (ViewGroup) focused; 3165 if (group.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 3166 && isViewDescendantOf(v, focused)) { 3167 v.requestFocus(); 3168 } 3169 } 3170 } 3171 } 3172 } 3173 3174 @Override 3175 public void recomputeViewAttributes(View child) { 3176 checkThread(); 3177 if (mView == child) { 3178 mAttachInfo.mRecomputeGlobalAttributes = true; 3179 if (!mWillDrawSoon) { 3180 scheduleTraversals(); 3181 } 3182 } 3183 } 3184 3185 void dispatchDetachedFromWindow() { 3186 if (mView != null && mView.mAttachInfo != null) { 3187 mAttachInfo.mTreeObserver.dispatchOnWindowAttachedChange(false); 3188 mView.dispatchDetachedFromWindow(); 3189 } 3190 3191 mAccessibilityInteractionConnectionManager.ensureNoConnection(); 3192 mAccessibilityManager.removeAccessibilityStateChangeListener( 3193 mAccessibilityInteractionConnectionManager); 3194 mAccessibilityManager.removeHighTextContrastStateChangeListener( 3195 mHighContrastTextManager); 3196 removeSendWindowContentChangedCallback(); 3197 3198 destroyHardwareRenderer(); 3199 3200 setAccessibilityFocus(null, null); 3201 3202 mView.assignParent(null); 3203 mView = null; 3204 mAttachInfo.mRootView = null; 3205 3206 if (mCapturingView != null) { 3207 releasePointerCapture(mCapturingView); 3208 } 3209 3210 mSurface.release(); 3211 3212 if (mInputQueueCallback != null && mInputQueue != null) { 3213 mInputQueueCallback.onInputQueueDestroyed(mInputQueue); 3214 mInputQueue.dispose(); 3215 mInputQueueCallback = null; 3216 mInputQueue = null; 3217 } 3218 if (mInputEventReceiver != null) { 3219 mInputEventReceiver.dispose(); 3220 mInputEventReceiver = null; 3221 } 3222 try { 3223 mWindowSession.remove(mWindow); 3224 } catch (RemoteException e) { 3225 } 3226 3227 // Dispose the input channel after removing the window so the Window Manager 3228 // doesn't interpret the input channel being closed as an abnormal termination. 3229 if (mInputChannel != null) { 3230 mInputChannel.dispose(); 3231 mInputChannel = null; 3232 } 3233 3234 mDisplayManager.unregisterDisplayListener(mDisplayListener); 3235 3236 unscheduleTraversals(); 3237 } 3238 3239 void updateConfiguration(Configuration config, boolean force) { 3240 if (DEBUG_CONFIGURATION) Log.v(mTag, 3241 "Applying new config to window " 3242 + mWindowAttributes.getTitle() 3243 + ": " + config); 3244 3245 CompatibilityInfo ci = mDisplayAdjustments.getCompatibilityInfo(); 3246 if (!ci.equals(CompatibilityInfo.DEFAULT_COMPATIBILITY_INFO)) { 3247 config = new Configuration(config); 3248 ci.applyToConfiguration(mNoncompatDensity, config); 3249 } 3250 3251 synchronized (sConfigCallbacks) { 3252 for (int i=sConfigCallbacks.size()-1; i>=0; i--) { 3253 sConfigCallbacks.get(i).onConfigurationChanged(config); 3254 } 3255 } 3256 if (mView != null) { 3257 // At this point the resources have been updated to 3258 // have the most recent config, whatever that is. Use 3259 // the one in them which may be newer. 3260 config = mView.getResources().getConfiguration(); 3261 if (force || mLastConfiguration.diff(config) != 0) { 3262 final int lastLayoutDirection = mLastConfiguration.getLayoutDirection(); 3263 final int currentLayoutDirection = config.getLayoutDirection(); 3264 mLastConfiguration.setTo(config); 3265 if (lastLayoutDirection != currentLayoutDirection && 3266 mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 3267 mView.setLayoutDirection(currentLayoutDirection); 3268 } 3269 mView.dispatchConfigurationChanged(config); 3270 } 3271 } 3272 } 3273 3274 /** 3275 * Return true if child is an ancestor of parent, (or equal to the parent). 3276 */ 3277 public static boolean isViewDescendantOf(View child, View parent) { 3278 if (child == parent) { 3279 return true; 3280 } 3281 3282 final ViewParent theParent = child.getParent(); 3283 return (theParent instanceof ViewGroup) && isViewDescendantOf((View) theParent, parent); 3284 } 3285 3286 private static void forceLayout(View view) { 3287 view.forceLayout(); 3288 if (view instanceof ViewGroup) { 3289 ViewGroup group = (ViewGroup) view; 3290 final int count = group.getChildCount(); 3291 for (int i = 0; i < count; i++) { 3292 forceLayout(group.getChildAt(i)); 3293 } 3294 } 3295 } 3296 3297 private final static int MSG_INVALIDATE = 1; 3298 private final static int MSG_INVALIDATE_RECT = 2; 3299 private final static int MSG_DIE = 3; 3300 private final static int MSG_RESIZED = 4; 3301 private final static int MSG_RESIZED_REPORT = 5; 3302 private final static int MSG_WINDOW_FOCUS_CHANGED = 6; 3303 private final static int MSG_DISPATCH_INPUT_EVENT = 7; 3304 private final static int MSG_DISPATCH_APP_VISIBILITY = 8; 3305 private final static int MSG_DISPATCH_GET_NEW_SURFACE = 9; 3306 private final static int MSG_DISPATCH_KEY_FROM_IME = 11; 3307 private final static int MSG_CHECK_FOCUS = 13; 3308 private final static int MSG_CLOSE_SYSTEM_DIALOGS = 14; 3309 private final static int MSG_DISPATCH_DRAG_EVENT = 15; 3310 private final static int MSG_DISPATCH_DRAG_LOCATION_EVENT = 16; 3311 private final static int MSG_DISPATCH_SYSTEM_UI_VISIBILITY = 17; 3312 private final static int MSG_UPDATE_CONFIGURATION = 18; 3313 private final static int MSG_PROCESS_INPUT_EVENTS = 19; 3314 private final static int MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST = 21; 3315 private final static int MSG_INVALIDATE_WORLD = 22; 3316 private final static int MSG_WINDOW_MOVED = 23; 3317 private final static int MSG_SYNTHESIZE_INPUT_EVENT = 24; 3318 private final static int MSG_DISPATCH_WINDOW_SHOWN = 25; 3319 private final static int MSG_REQUEST_KEYBOARD_SHORTCUTS = 26; 3320 private final static int MSG_UPDATE_POINTER_ICON = 27; 3321 3322 final class ViewRootHandler extends Handler { 3323 @Override 3324 public String getMessageName(Message message) { 3325 switch (message.what) { 3326 case MSG_INVALIDATE: 3327 return "MSG_INVALIDATE"; 3328 case MSG_INVALIDATE_RECT: 3329 return "MSG_INVALIDATE_RECT"; 3330 case MSG_DIE: 3331 return "MSG_DIE"; 3332 case MSG_RESIZED: 3333 return "MSG_RESIZED"; 3334 case MSG_RESIZED_REPORT: 3335 return "MSG_RESIZED_REPORT"; 3336 case MSG_WINDOW_FOCUS_CHANGED: 3337 return "MSG_WINDOW_FOCUS_CHANGED"; 3338 case MSG_DISPATCH_INPUT_EVENT: 3339 return "MSG_DISPATCH_INPUT_EVENT"; 3340 case MSG_DISPATCH_APP_VISIBILITY: 3341 return "MSG_DISPATCH_APP_VISIBILITY"; 3342 case MSG_DISPATCH_GET_NEW_SURFACE: 3343 return "MSG_DISPATCH_GET_NEW_SURFACE"; 3344 case MSG_DISPATCH_KEY_FROM_IME: 3345 return "MSG_DISPATCH_KEY_FROM_IME"; 3346 case MSG_CHECK_FOCUS: 3347 return "MSG_CHECK_FOCUS"; 3348 case MSG_CLOSE_SYSTEM_DIALOGS: 3349 return "MSG_CLOSE_SYSTEM_DIALOGS"; 3350 case MSG_DISPATCH_DRAG_EVENT: 3351 return "MSG_DISPATCH_DRAG_EVENT"; 3352 case MSG_DISPATCH_DRAG_LOCATION_EVENT: 3353 return "MSG_DISPATCH_DRAG_LOCATION_EVENT"; 3354 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: 3355 return "MSG_DISPATCH_SYSTEM_UI_VISIBILITY"; 3356 case MSG_UPDATE_CONFIGURATION: 3357 return "MSG_UPDATE_CONFIGURATION"; 3358 case MSG_PROCESS_INPUT_EVENTS: 3359 return "MSG_PROCESS_INPUT_EVENTS"; 3360 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: 3361 return "MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST"; 3362 case MSG_WINDOW_MOVED: 3363 return "MSG_WINDOW_MOVED"; 3364 case MSG_SYNTHESIZE_INPUT_EVENT: 3365 return "MSG_SYNTHESIZE_INPUT_EVENT"; 3366 case MSG_DISPATCH_WINDOW_SHOWN: 3367 return "MSG_DISPATCH_WINDOW_SHOWN"; 3368 case MSG_UPDATE_POINTER_ICON: 3369 return "MSG_UPDATE_POINTER_ICON"; 3370 } 3371 return super.getMessageName(message); 3372 } 3373 3374 @Override 3375 public void handleMessage(Message msg) { 3376 switch (msg.what) { 3377 case MSG_INVALIDATE: 3378 ((View) msg.obj).invalidate(); 3379 break; 3380 case MSG_INVALIDATE_RECT: 3381 final View.AttachInfo.InvalidateInfo info = (View.AttachInfo.InvalidateInfo) msg.obj; 3382 info.target.invalidate(info.left, info.top, info.right, info.bottom); 3383 info.recycle(); 3384 break; 3385 case MSG_PROCESS_INPUT_EVENTS: 3386 mProcessInputEventsScheduled = false; 3387 doProcessInputEvents(); 3388 break; 3389 case MSG_DISPATCH_APP_VISIBILITY: 3390 handleAppVisibility(msg.arg1 != 0); 3391 break; 3392 case MSG_DISPATCH_GET_NEW_SURFACE: 3393 handleGetNewSurface(); 3394 break; 3395 case MSG_RESIZED: { 3396 // Recycled in the fall through... 3397 SomeArgs args = (SomeArgs) msg.obj; 3398 if (mWinFrame.equals(args.arg1) 3399 && mPendingOverscanInsets.equals(args.arg5) 3400 && mPendingContentInsets.equals(args.arg2) 3401 && mPendingStableInsets.equals(args.arg6) 3402 && mPendingVisibleInsets.equals(args.arg3) 3403 && mPendingOutsets.equals(args.arg7) 3404 && mPendingBackDropFrame.equals(args.arg8) 3405 && args.arg4 == null 3406 && args.argi1 == 0) { 3407 break; 3408 } 3409 } // fall through... 3410 case MSG_RESIZED_REPORT: 3411 if (mAdded) { 3412 SomeArgs args = (SomeArgs) msg.obj; 3413 3414 Configuration config = (Configuration) args.arg4; 3415 if (config != null) { 3416 updateConfiguration(config, false); 3417 } 3418 3419 final boolean framesChanged = !mWinFrame.equals(args.arg1) 3420 || !mPendingOverscanInsets.equals(args.arg5) 3421 || !mPendingContentInsets.equals(args.arg2) 3422 || !mPendingStableInsets.equals(args.arg6) 3423 || !mPendingVisibleInsets.equals(args.arg3) 3424 || !mPendingOutsets.equals(args.arg7); 3425 3426 mWinFrame.set((Rect) args.arg1); 3427 mPendingOverscanInsets.set((Rect) args.arg5); 3428 mPendingContentInsets.set((Rect) args.arg2); 3429 mPendingStableInsets.set((Rect) args.arg6); 3430 mPendingVisibleInsets.set((Rect) args.arg3); 3431 mPendingOutsets.set((Rect) args.arg7); 3432 mPendingBackDropFrame.set((Rect) args.arg8); 3433 mForceNextWindowRelayout = args.argi1 != 0; 3434 mPendingAlwaysConsumeNavBar = args.argi2 != 0; 3435 3436 args.recycle(); 3437 3438 if (msg.what == MSG_RESIZED_REPORT) { 3439 mReportNextDraw = true; 3440 } 3441 3442 if (mView != null && framesChanged) { 3443 forceLayout(mView); 3444 } 3445 3446 requestLayout(); 3447 } 3448 break; 3449 case MSG_WINDOW_MOVED: 3450 if (mAdded) { 3451 final int w = mWinFrame.width(); 3452 final int h = mWinFrame.height(); 3453 final int l = msg.arg1; 3454 final int t = msg.arg2; 3455 mWinFrame.left = l; 3456 mWinFrame.right = l + w; 3457 mWinFrame.top = t; 3458 mWinFrame.bottom = t + h; 3459 3460 mPendingBackDropFrame.set(mWinFrame); 3461 3462 // Suppress layouts during resizing - a correct layout will happen when resizing 3463 // is done, and this just increases system load. 3464 boolean isDockedDivider = mWindowAttributes.type == TYPE_DOCK_DIVIDER; 3465 boolean suppress = (mDragResizing && mResizeMode == RESIZE_MODE_DOCKED_DIVIDER) 3466 || isDockedDivider; 3467 if (!suppress) { 3468 if (mView != null) { 3469 forceLayout(mView); 3470 } 3471 requestLayout(); 3472 } else { 3473 maybeHandleWindowMove(mWinFrame); 3474 } 3475 } 3476 break; 3477 case MSG_WINDOW_FOCUS_CHANGED: { 3478 if (mAdded) { 3479 boolean hasWindowFocus = msg.arg1 != 0; 3480 mAttachInfo.mHasWindowFocus = hasWindowFocus; 3481 3482 profileRendering(hasWindowFocus); 3483 3484 if (hasWindowFocus) { 3485 boolean inTouchMode = msg.arg2 != 0; 3486 ensureTouchModeLocally(inTouchMode); 3487 3488 if (mAttachInfo.mHardwareRenderer != null && mSurface.isValid()){ 3489 mFullRedrawNeeded = true; 3490 try { 3491 final WindowManager.LayoutParams lp = mWindowAttributes; 3492 final Rect surfaceInsets = lp != null ? lp.surfaceInsets : null; 3493 mAttachInfo.mHardwareRenderer.initializeIfNeeded( 3494 mWidth, mHeight, mAttachInfo, mSurface, surfaceInsets); 3495 } catch (OutOfResourcesException e) { 3496 Log.e(mTag, "OutOfResourcesException locking surface", e); 3497 try { 3498 if (!mWindowSession.outOfMemory(mWindow)) { 3499 Slog.w(mTag, "No processes killed for memory; killing self"); 3500 Process.killProcess(Process.myPid()); 3501 } 3502 } catch (RemoteException ex) { 3503 } 3504 // Retry in a bit. 3505 sendMessageDelayed(obtainMessage(msg.what, msg.arg1, msg.arg2), 500); 3506 return; 3507 } 3508 } 3509 } 3510 3511 mLastWasImTarget = WindowManager.LayoutParams 3512 .mayUseInputMethod(mWindowAttributes.flags); 3513 3514 InputMethodManager imm = InputMethodManager.peekInstance(); 3515 if (imm != null && mLastWasImTarget && !isInLocalFocusMode()) { 3516 imm.onPreWindowFocus(mView, hasWindowFocus); 3517 } 3518 if (mView != null) { 3519 mAttachInfo.mKeyDispatchState.reset(); 3520 mView.dispatchWindowFocusChanged(hasWindowFocus); 3521 mAttachInfo.mTreeObserver.dispatchOnWindowFocusChange(hasWindowFocus); 3522 } 3523 3524 // Note: must be done after the focus change callbacks, 3525 // so all of the view state is set up correctly. 3526 if (hasWindowFocus) { 3527 if (imm != null && mLastWasImTarget && !isInLocalFocusMode()) { 3528 imm.onPostWindowFocus(mView, mView.findFocus(), 3529 mWindowAttributes.softInputMode, 3530 !mHasHadWindowFocus, mWindowAttributes.flags); 3531 } 3532 // Clear the forward bit. We can just do this directly, since 3533 // the window manager doesn't care about it. 3534 mWindowAttributes.softInputMode &= 3535 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3536 ((WindowManager.LayoutParams)mView.getLayoutParams()) 3537 .softInputMode &= 3538 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3539 mHasHadWindowFocus = true; 3540 } else if (mCapturingView != null) { 3541 releasePointerCapture(mCapturingView); 3542 } 3543 } 3544 } break; 3545 case MSG_DIE: 3546 doDie(); 3547 break; 3548 case MSG_DISPATCH_INPUT_EVENT: { 3549 SomeArgs args = (SomeArgs)msg.obj; 3550 InputEvent event = (InputEvent)args.arg1; 3551 InputEventReceiver receiver = (InputEventReceiver)args.arg2; 3552 enqueueInputEvent(event, receiver, 0, true); 3553 args.recycle(); 3554 } break; 3555 case MSG_SYNTHESIZE_INPUT_EVENT: { 3556 InputEvent event = (InputEvent)msg.obj; 3557 enqueueInputEvent(event, null, QueuedInputEvent.FLAG_UNHANDLED, true); 3558 } break; 3559 case MSG_DISPATCH_KEY_FROM_IME: { 3560 if (LOCAL_LOGV) Log.v( 3561 TAG, "Dispatching key " 3562 + msg.obj + " from IME to " + mView); 3563 KeyEvent event = (KeyEvent)msg.obj; 3564 if ((event.getFlags()&KeyEvent.FLAG_FROM_SYSTEM) != 0) { 3565 // The IME is trying to say this event is from the 3566 // system! Bad bad bad! 3567 //noinspection UnusedAssignment 3568 event = KeyEvent.changeFlags(event, event.getFlags() & 3569 ~KeyEvent.FLAG_FROM_SYSTEM); 3570 } 3571 enqueueInputEvent(event, null, QueuedInputEvent.FLAG_DELIVER_POST_IME, true); 3572 } break; 3573 case MSG_CHECK_FOCUS: { 3574 InputMethodManager imm = InputMethodManager.peekInstance(); 3575 if (imm != null) { 3576 imm.checkFocus(); 3577 } 3578 } break; 3579 case MSG_CLOSE_SYSTEM_DIALOGS: { 3580 if (mView != null) { 3581 mView.onCloseSystemDialogs((String)msg.obj); 3582 } 3583 } break; 3584 case MSG_DISPATCH_DRAG_EVENT: 3585 case MSG_DISPATCH_DRAG_LOCATION_EVENT: { 3586 DragEvent event = (DragEvent)msg.obj; 3587 event.mLocalState = mLocalDragState; // only present when this app called startDrag() 3588 handleDragEvent(event); 3589 } break; 3590 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: { 3591 handleDispatchSystemUiVisibilityChanged((SystemUiVisibilityInfo) msg.obj); 3592 } break; 3593 case MSG_UPDATE_CONFIGURATION: { 3594 Configuration config = (Configuration)msg.obj; 3595 if (config.isOtherSeqNewer(mLastConfiguration)) { 3596 config = mLastConfiguration; 3597 } 3598 updateConfiguration(config, false); 3599 } break; 3600 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: { 3601 setAccessibilityFocus(null, null); 3602 } break; 3603 case MSG_INVALIDATE_WORLD: { 3604 if (mView != null) { 3605 invalidateWorld(mView); 3606 } 3607 } break; 3608 case MSG_DISPATCH_WINDOW_SHOWN: { 3609 handleDispatchWindowShown(); 3610 } break; 3611 case MSG_REQUEST_KEYBOARD_SHORTCUTS: { 3612 final IResultReceiver receiver = (IResultReceiver) msg.obj; 3613 final int deviceId = msg.arg1; 3614 handleRequestKeyboardShortcuts(receiver, deviceId); 3615 } break; 3616 case MSG_UPDATE_POINTER_ICON: { 3617 MotionEvent event = (MotionEvent) msg.obj; 3618 resetPointerIcon(event); 3619 } break; 3620 } 3621 } 3622 } 3623 3624 final ViewRootHandler mHandler = new ViewRootHandler(); 3625 3626 /** 3627 * Something in the current window tells us we need to change the touch mode. For 3628 * example, we are not in touch mode, and the user touches the screen. 3629 * 3630 * If the touch mode has changed, tell the window manager, and handle it locally. 3631 * 3632 * @param inTouchMode Whether we want to be in touch mode. 3633 * @return True if the touch mode changed and focus changed was changed as a result 3634 */ 3635 boolean ensureTouchMode(boolean inTouchMode) { 3636 if (DBG) Log.d("touchmode", "ensureTouchMode(" + inTouchMode + "), current " 3637 + "touch mode is " + mAttachInfo.mInTouchMode); 3638 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3639 3640 // tell the window manager 3641 try { 3642 mWindowSession.setInTouchMode(inTouchMode); 3643 } catch (RemoteException e) { 3644 throw new RuntimeException(e); 3645 } 3646 3647 // handle the change 3648 return ensureTouchModeLocally(inTouchMode); 3649 } 3650 3651 /** 3652 * Ensure that the touch mode for this window is set, and if it is changing, 3653 * take the appropriate action. 3654 * @param inTouchMode Whether we want to be in touch mode. 3655 * @return True if the touch mode changed and focus changed was changed as a result 3656 */ 3657 private boolean ensureTouchModeLocally(boolean inTouchMode) { 3658 if (DBG) Log.d("touchmode", "ensureTouchModeLocally(" + inTouchMode + "), current " 3659 + "touch mode is " + mAttachInfo.mInTouchMode); 3660 3661 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3662 3663 mAttachInfo.mInTouchMode = inTouchMode; 3664 mAttachInfo.mTreeObserver.dispatchOnTouchModeChanged(inTouchMode); 3665 3666 return (inTouchMode) ? enterTouchMode() : leaveTouchMode(); 3667 } 3668 3669 private boolean enterTouchMode() { 3670 if (mView != null && mView.hasFocus()) { 3671 // note: not relying on mFocusedView here because this could 3672 // be when the window is first being added, and mFocused isn't 3673 // set yet. 3674 final View focused = mView.findFocus(); 3675 if (focused != null && !focused.isFocusableInTouchMode()) { 3676 final ViewGroup ancestorToTakeFocus = findAncestorToTakeFocusInTouchMode(focused); 3677 if (ancestorToTakeFocus != null) { 3678 // there is an ancestor that wants focus after its 3679 // descendants that is focusable in touch mode.. give it 3680 // focus 3681 return ancestorToTakeFocus.requestFocus(); 3682 } else { 3683 // There's nothing to focus. Clear and propagate through the 3684 // hierarchy, but don't attempt to place new focus. 3685 focused.clearFocusInternal(null, true, false); 3686 return true; 3687 } 3688 } 3689 } 3690 return false; 3691 } 3692 3693 /** 3694 * Find an ancestor of focused that wants focus after its descendants and is 3695 * focusable in touch mode. 3696 * @param focused The currently focused view. 3697 * @return An appropriate view, or null if no such view exists. 3698 */ 3699 private static ViewGroup findAncestorToTakeFocusInTouchMode(View focused) { 3700 ViewParent parent = focused.getParent(); 3701 while (parent instanceof ViewGroup) { 3702 final ViewGroup vgParent = (ViewGroup) parent; 3703 if (vgParent.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 3704 && vgParent.isFocusableInTouchMode()) { 3705 return vgParent; 3706 } 3707 if (vgParent.isRootNamespace()) { 3708 return null; 3709 } else { 3710 parent = vgParent.getParent(); 3711 } 3712 } 3713 return null; 3714 } 3715 3716 private boolean leaveTouchMode() { 3717 if (mView != null) { 3718 if (mView.hasFocus()) { 3719 View focusedView = mView.findFocus(); 3720 if (!(focusedView instanceof ViewGroup)) { 3721 // some view has focus, let it keep it 3722 return false; 3723 } else if (((ViewGroup) focusedView).getDescendantFocusability() != 3724 ViewGroup.FOCUS_AFTER_DESCENDANTS) { 3725 // some view group has focus, and doesn't prefer its children 3726 // over itself for focus, so let them keep it. 3727 return false; 3728 } 3729 } 3730 3731 // find the best view to give focus to in this brave new non-touch-mode 3732 // world 3733 final View focused = focusSearch(null, View.FOCUS_DOWN); 3734 if (focused != null) { 3735 return focused.requestFocus(View.FOCUS_DOWN); 3736 } 3737 } 3738 return false; 3739 } 3740 3741 /** 3742 * Base class for implementing a stage in the chain of responsibility 3743 * for processing input events. 3744 * <p> 3745 * Events are delivered to the stage by the {@link #deliver} method. The stage 3746 * then has the choice of finishing the event or forwarding it to the next stage. 3747 * </p> 3748 */ 3749 abstract class InputStage { 3750 private final InputStage mNext; 3751 3752 protected static final int FORWARD = 0; 3753 protected static final int FINISH_HANDLED = 1; 3754 protected static final int FINISH_NOT_HANDLED = 2; 3755 3756 /** 3757 * Creates an input stage. 3758 * @param next The next stage to which events should be forwarded. 3759 */ 3760 public InputStage(InputStage next) { 3761 mNext = next; 3762 } 3763 3764 /** 3765 * Delivers an event to be processed. 3766 */ 3767 public final void deliver(QueuedInputEvent q) { 3768 if ((q.mFlags & QueuedInputEvent.FLAG_FINISHED) != 0) { 3769 forward(q); 3770 } else if (shouldDropInputEvent(q)) { 3771 finish(q, false); 3772 } else { 3773 apply(q, onProcess(q)); 3774 } 3775 } 3776 3777 /** 3778 * Marks the the input event as finished then forwards it to the next stage. 3779 */ 3780 protected void finish(QueuedInputEvent q, boolean handled) { 3781 q.mFlags |= QueuedInputEvent.FLAG_FINISHED; 3782 if (handled) { 3783 q.mFlags |= QueuedInputEvent.FLAG_FINISHED_HANDLED; 3784 } 3785 forward(q); 3786 } 3787 3788 /** 3789 * Forwards the event to the next stage. 3790 */ 3791 protected void forward(QueuedInputEvent q) { 3792 onDeliverToNext(q); 3793 } 3794 3795 /** 3796 * Applies a result code from {@link #onProcess} to the specified event. 3797 */ 3798 protected void apply(QueuedInputEvent q, int result) { 3799 if (result == FORWARD) { 3800 forward(q); 3801 } else if (result == FINISH_HANDLED) { 3802 finish(q, true); 3803 } else if (result == FINISH_NOT_HANDLED) { 3804 finish(q, false); 3805 } else { 3806 throw new IllegalArgumentException("Invalid result: " + result); 3807 } 3808 } 3809 3810 /** 3811 * Called when an event is ready to be processed. 3812 * @return A result code indicating how the event was handled. 3813 */ 3814 protected int onProcess(QueuedInputEvent q) { 3815 return FORWARD; 3816 } 3817 3818 /** 3819 * Called when an event is being delivered to the next stage. 3820 */ 3821 protected void onDeliverToNext(QueuedInputEvent q) { 3822 if (DEBUG_INPUT_STAGES) { 3823 Log.v(mTag, "Done with " + getClass().getSimpleName() + ". " + q); 3824 } 3825 if (mNext != null) { 3826 mNext.deliver(q); 3827 } else { 3828 finishInputEvent(q); 3829 } 3830 } 3831 3832 protected boolean shouldDropInputEvent(QueuedInputEvent q) { 3833 if (mView == null || !mAdded) { 3834 Slog.w(mTag, "Dropping event due to root view being removed: " + q.mEvent); 3835 return true; 3836 } else if ((!mAttachInfo.mHasWindowFocus 3837 && !q.mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER)) || mStopped 3838 || (mIsAmbientMode && !q.mEvent.isFromSource(InputDevice.SOURCE_CLASS_BUTTON)) 3839 || (mPausedForTransition && !isBack(q.mEvent))) { 3840 // This is a focus event and the window doesn't currently have input focus or 3841 // has stopped. This could be an event that came back from the previous stage 3842 // but the window has lost focus or stopped in the meantime. 3843 if (isTerminalInputEvent(q.mEvent)) { 3844 // Don't drop terminal input events, however mark them as canceled. 3845 q.mEvent.cancel(); 3846 Slog.w(mTag, "Cancelling event due to no window focus: " + q.mEvent); 3847 return false; 3848 } 3849 3850 // Drop non-terminal input events. 3851 Slog.w(mTag, "Dropping event due to no window focus: " + q.mEvent); 3852 return true; 3853 } 3854 return false; 3855 } 3856 3857 void dump(String prefix, PrintWriter writer) { 3858 if (mNext != null) { 3859 mNext.dump(prefix, writer); 3860 } 3861 } 3862 3863 private boolean isBack(InputEvent event) { 3864 if (event instanceof KeyEvent) { 3865 return ((KeyEvent) event).getKeyCode() == KeyEvent.KEYCODE_BACK; 3866 } else { 3867 return false; 3868 } 3869 } 3870 } 3871 3872 /** 3873 * Base class for implementing an input pipeline stage that supports 3874 * asynchronous and out-of-order processing of input events. 3875 * <p> 3876 * In addition to what a normal input stage can do, an asynchronous 3877 * input stage may also defer an input event that has been delivered to it 3878 * and finish or forward it later. 3879 * </p> 3880 */ 3881 abstract class AsyncInputStage extends InputStage { 3882 private final String mTraceCounter; 3883 3884 private QueuedInputEvent mQueueHead; 3885 private QueuedInputEvent mQueueTail; 3886 private int mQueueLength; 3887 3888 protected static final int DEFER = 3; 3889 3890 /** 3891 * Creates an asynchronous input stage. 3892 * @param next The next stage to which events should be forwarded. 3893 * @param traceCounter The name of a counter to record the size of 3894 * the queue of pending events. 3895 */ 3896 public AsyncInputStage(InputStage next, String traceCounter) { 3897 super(next); 3898 mTraceCounter = traceCounter; 3899 } 3900 3901 /** 3902 * Marks the event as deferred, which is to say that it will be handled 3903 * asynchronously. The caller is responsible for calling {@link #forward} 3904 * or {@link #finish} later when it is done handling the event. 3905 */ 3906 protected void defer(QueuedInputEvent q) { 3907 q.mFlags |= QueuedInputEvent.FLAG_DEFERRED; 3908 enqueue(q); 3909 } 3910 3911 @Override 3912 protected void forward(QueuedInputEvent q) { 3913 // Clear the deferred flag. 3914 q.mFlags &= ~QueuedInputEvent.FLAG_DEFERRED; 3915 3916 // Fast path if the queue is empty. 3917 QueuedInputEvent curr = mQueueHead; 3918 if (curr == null) { 3919 super.forward(q); 3920 return; 3921 } 3922 3923 // Determine whether the event must be serialized behind any others 3924 // before it can be delivered to the next stage. This is done because 3925 // deferred events might be handled out of order by the stage. 3926 final int deviceId = q.mEvent.getDeviceId(); 3927 QueuedInputEvent prev = null; 3928 boolean blocked = false; 3929 while (curr != null && curr != q) { 3930 if (!blocked && deviceId == curr.mEvent.getDeviceId()) { 3931 blocked = true; 3932 } 3933 prev = curr; 3934 curr = curr.mNext; 3935 } 3936 3937 // If the event is blocked, then leave it in the queue to be delivered later. 3938 // Note that the event might not yet be in the queue if it was not previously 3939 // deferred so we will enqueue it if needed. 3940 if (blocked) { 3941 if (curr == null) { 3942 enqueue(q); 3943 } 3944 return; 3945 } 3946 3947 // The event is not blocked. Deliver it immediately. 3948 if (curr != null) { 3949 curr = curr.mNext; 3950 dequeue(q, prev); 3951 } 3952 super.forward(q); 3953 3954 // Dequeuing this event may have unblocked successors. Deliver them. 3955 while (curr != null) { 3956 if (deviceId == curr.mEvent.getDeviceId()) { 3957 if ((curr.mFlags & QueuedInputEvent.FLAG_DEFERRED) != 0) { 3958 break; 3959 } 3960 QueuedInputEvent next = curr.mNext; 3961 dequeue(curr, prev); 3962 super.forward(curr); 3963 curr = next; 3964 } else { 3965 prev = curr; 3966 curr = curr.mNext; 3967 } 3968 } 3969 } 3970 3971 @Override 3972 protected void apply(QueuedInputEvent q, int result) { 3973 if (result == DEFER) { 3974 defer(q); 3975 } else { 3976 super.apply(q, result); 3977 } 3978 } 3979 3980 private void enqueue(QueuedInputEvent q) { 3981 if (mQueueTail == null) { 3982 mQueueHead = q; 3983 mQueueTail = q; 3984 } else { 3985 mQueueTail.mNext = q; 3986 mQueueTail = q; 3987 } 3988 3989 mQueueLength += 1; 3990 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 3991 } 3992 3993 private void dequeue(QueuedInputEvent q, QueuedInputEvent prev) { 3994 if (prev == null) { 3995 mQueueHead = q.mNext; 3996 } else { 3997 prev.mNext = q.mNext; 3998 } 3999 if (mQueueTail == q) { 4000 mQueueTail = prev; 4001 } 4002 q.mNext = null; 4003 4004 mQueueLength -= 1; 4005 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 4006 } 4007 4008 @Override 4009 void dump(String prefix, PrintWriter writer) { 4010 writer.print(prefix); 4011 writer.print(getClass().getName()); 4012 writer.print(": mQueueLength="); 4013 writer.println(mQueueLength); 4014 4015 super.dump(prefix, writer); 4016 } 4017 } 4018 4019 /** 4020 * Delivers pre-ime input events to a native activity. 4021 * Does not support pointer events. 4022 */ 4023 final class NativePreImeInputStage extends AsyncInputStage 4024 implements InputQueue.FinishedInputEventCallback { 4025 public NativePreImeInputStage(InputStage next, String traceCounter) { 4026 super(next, traceCounter); 4027 } 4028 4029 @Override 4030 protected int onProcess(QueuedInputEvent q) { 4031 if (mInputQueue != null && q.mEvent instanceof KeyEvent) { 4032 mInputQueue.sendInputEvent(q.mEvent, q, true, this); 4033 return DEFER; 4034 } 4035 return FORWARD; 4036 } 4037 4038 @Override 4039 public void onFinishedInputEvent(Object token, boolean handled) { 4040 QueuedInputEvent q = (QueuedInputEvent)token; 4041 if (handled) { 4042 finish(q, true); 4043 return; 4044 } 4045 forward(q); 4046 } 4047 } 4048 4049 /** 4050 * Delivers pre-ime input events to the view hierarchy. 4051 * Does not support pointer events. 4052 */ 4053 final class ViewPreImeInputStage extends InputStage { 4054 public ViewPreImeInputStage(InputStage next) { 4055 super(next); 4056 } 4057 4058 @Override 4059 protected int onProcess(QueuedInputEvent q) { 4060 if (q.mEvent instanceof KeyEvent) { 4061 return processKeyEvent(q); 4062 } 4063 return FORWARD; 4064 } 4065 4066 private int processKeyEvent(QueuedInputEvent q) { 4067 final KeyEvent event = (KeyEvent)q.mEvent; 4068 if (mView.dispatchKeyEventPreIme(event)) { 4069 return FINISH_HANDLED; 4070 } 4071 return FORWARD; 4072 } 4073 } 4074 4075 /** 4076 * Delivers input events to the ime. 4077 * Does not support pointer events. 4078 */ 4079 final class ImeInputStage extends AsyncInputStage 4080 implements InputMethodManager.FinishedInputEventCallback { 4081 public ImeInputStage(InputStage next, String traceCounter) { 4082 super(next, traceCounter); 4083 } 4084 4085 @Override 4086 protected int onProcess(QueuedInputEvent q) { 4087 if (mLastWasImTarget && !isInLocalFocusMode()) { 4088 InputMethodManager imm = InputMethodManager.peekInstance(); 4089 if (imm != null) { 4090 final InputEvent event = q.mEvent; 4091 if (DEBUG_IMF) Log.v(mTag, "Sending input event to IME: " + event); 4092 int result = imm.dispatchInputEvent(event, q, this, mHandler); 4093 if (result == InputMethodManager.DISPATCH_HANDLED) { 4094 return FINISH_HANDLED; 4095 } else if (result == InputMethodManager.DISPATCH_NOT_HANDLED) { 4096 // The IME could not handle it, so skip along to the next InputStage 4097 return FORWARD; 4098 } else { 4099 return DEFER; // callback will be invoked later 4100 } 4101 } 4102 } 4103 return FORWARD; 4104 } 4105 4106 @Override 4107 public void onFinishedInputEvent(Object token, boolean handled) { 4108 QueuedInputEvent q = (QueuedInputEvent)token; 4109 if (handled) { 4110 finish(q, true); 4111 return; 4112 } 4113 forward(q); 4114 } 4115 } 4116 4117 /** 4118 * Performs early processing of post-ime input events. 4119 */ 4120 final class EarlyPostImeInputStage extends InputStage { 4121 public EarlyPostImeInputStage(InputStage next) { 4122 super(next); 4123 } 4124 4125 @Override 4126 protected int onProcess(QueuedInputEvent q) { 4127 if (q.mEvent instanceof KeyEvent) { 4128 return processKeyEvent(q); 4129 } else { 4130 final int source = q.mEvent.getSource(); 4131 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 4132 return processPointerEvent(q); 4133 } 4134 } 4135 return FORWARD; 4136 } 4137 4138 private int processKeyEvent(QueuedInputEvent q) { 4139 final KeyEvent event = (KeyEvent)q.mEvent; 4140 4141 // If the key's purpose is to exit touch mode then we consume it 4142 // and consider it handled. 4143 if (checkForLeavingTouchModeAndConsume(event)) { 4144 return FINISH_HANDLED; 4145 } 4146 4147 // Make sure the fallback event policy sees all keys that will be 4148 // delivered to the view hierarchy. 4149 mFallbackEventHandler.preDispatchKeyEvent(event); 4150 return FORWARD; 4151 } 4152 4153 private int processPointerEvent(QueuedInputEvent q) { 4154 final MotionEvent event = (MotionEvent)q.mEvent; 4155 4156 // Translate the pointer event for compatibility, if needed. 4157 if (mTranslator != null) { 4158 mTranslator.translateEventInScreenToAppWindow(event); 4159 } 4160 4161 // Enter touch mode on down or scroll. 4162 final int action = event.getAction(); 4163 if (action == MotionEvent.ACTION_DOWN || action == MotionEvent.ACTION_SCROLL) { 4164 ensureTouchMode(true); 4165 } 4166 4167 // Offset the scroll position. 4168 if (mCurScrollY != 0) { 4169 event.offsetLocation(0, mCurScrollY); 4170 } 4171 4172 // Remember the touch position for possible drag-initiation. 4173 if (event.isTouchEvent()) { 4174 mLastTouchPoint.x = event.getRawX(); 4175 mLastTouchPoint.y = event.getRawY(); 4176 mLastTouchSource = event.getSource(); 4177 } 4178 return FORWARD; 4179 } 4180 } 4181 4182 /** 4183 * Delivers post-ime input events to a native activity. 4184 */ 4185 final class NativePostImeInputStage extends AsyncInputStage 4186 implements InputQueue.FinishedInputEventCallback { 4187 public NativePostImeInputStage(InputStage next, String traceCounter) { 4188 super(next, traceCounter); 4189 } 4190 4191 @Override 4192 protected int onProcess(QueuedInputEvent q) { 4193 if (mInputQueue != null) { 4194 mInputQueue.sendInputEvent(q.mEvent, q, false, this); 4195 return DEFER; 4196 } 4197 return FORWARD; 4198 } 4199 4200 @Override 4201 public void onFinishedInputEvent(Object token, boolean handled) { 4202 QueuedInputEvent q = (QueuedInputEvent)token; 4203 if (handled) { 4204 finish(q, true); 4205 return; 4206 } 4207 forward(q); 4208 } 4209 } 4210 4211 /** 4212 * Delivers post-ime input events to the view hierarchy. 4213 */ 4214 final class ViewPostImeInputStage extends InputStage { 4215 public ViewPostImeInputStage(InputStage next) { 4216 super(next); 4217 } 4218 4219 @Override 4220 protected int onProcess(QueuedInputEvent q) { 4221 if (q.mEvent instanceof KeyEvent) { 4222 return processKeyEvent(q); 4223 } else { 4224 final int source = q.mEvent.getSource(); 4225 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 4226 return processPointerEvent(q); 4227 } else if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 4228 return processTrackballEvent(q); 4229 } else { 4230 return processGenericMotionEvent(q); 4231 } 4232 } 4233 } 4234 4235 @Override 4236 protected void onDeliverToNext(QueuedInputEvent q) { 4237 if (mUnbufferedInputDispatch 4238 && q.mEvent instanceof MotionEvent 4239 && ((MotionEvent)q.mEvent).isTouchEvent() 4240 && isTerminalInputEvent(q.mEvent)) { 4241 mUnbufferedInputDispatch = false; 4242 scheduleConsumeBatchedInput(); 4243 } 4244 super.onDeliverToNext(q); 4245 } 4246 4247 private int processKeyEvent(QueuedInputEvent q) { 4248 final KeyEvent event = (KeyEvent)q.mEvent; 4249 4250 // Deliver the key to the view hierarchy. 4251 if (mView.dispatchKeyEvent(event)) { 4252 return FINISH_HANDLED; 4253 } 4254 4255 if (shouldDropInputEvent(q)) { 4256 return FINISH_NOT_HANDLED; 4257 } 4258 4259 // If the Control modifier is held, try to interpret the key as a shortcut. 4260 if (event.getAction() == KeyEvent.ACTION_DOWN 4261 && event.isCtrlPressed() 4262 && event.getRepeatCount() == 0 4263 && !KeyEvent.isModifierKey(event.getKeyCode())) { 4264 if (mView.dispatchKeyShortcutEvent(event)) { 4265 return FINISH_HANDLED; 4266 } 4267 if (shouldDropInputEvent(q)) { 4268 return FINISH_NOT_HANDLED; 4269 } 4270 } 4271 4272 // Apply the fallback event policy. 4273 if (mFallbackEventHandler.dispatchKeyEvent(event)) { 4274 return FINISH_HANDLED; 4275 } 4276 if (shouldDropInputEvent(q)) { 4277 return FINISH_NOT_HANDLED; 4278 } 4279 4280 // Handle automatic focus changes. 4281 if (event.getAction() == KeyEvent.ACTION_DOWN) { 4282 int direction = 0; 4283 switch (event.getKeyCode()) { 4284 case KeyEvent.KEYCODE_DPAD_LEFT: 4285 if (event.hasNoModifiers()) { 4286 direction = View.FOCUS_LEFT; 4287 } 4288 break; 4289 case KeyEvent.KEYCODE_DPAD_RIGHT: 4290 if (event.hasNoModifiers()) { 4291 direction = View.FOCUS_RIGHT; 4292 } 4293 break; 4294 case KeyEvent.KEYCODE_DPAD_UP: 4295 if (event.hasNoModifiers()) { 4296 direction = View.FOCUS_UP; 4297 } 4298 break; 4299 case KeyEvent.KEYCODE_DPAD_DOWN: 4300 if (event.hasNoModifiers()) { 4301 direction = View.FOCUS_DOWN; 4302 } 4303 break; 4304 case KeyEvent.KEYCODE_TAB: 4305 if (event.hasNoModifiers()) { 4306 direction = View.FOCUS_FORWARD; 4307 } else if (event.hasModifiers(KeyEvent.META_SHIFT_ON)) { 4308 direction = View.FOCUS_BACKWARD; 4309 } 4310 break; 4311 } 4312 if (direction != 0) { 4313 View focused = mView.findFocus(); 4314 if (focused != null) { 4315 View v = focused.focusSearch(direction); 4316 if (v != null && v != focused) { 4317 // do the math the get the interesting rect 4318 // of previous focused into the coord system of 4319 // newly focused view 4320 focused.getFocusedRect(mTempRect); 4321 if (mView instanceof ViewGroup) { 4322 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 4323 focused, mTempRect); 4324 ((ViewGroup) mView).offsetRectIntoDescendantCoords( 4325 v, mTempRect); 4326 } 4327 if (v.requestFocus(direction, mTempRect)) { 4328 playSoundEffect(SoundEffectConstants 4329 .getContantForFocusDirection(direction)); 4330 return FINISH_HANDLED; 4331 } 4332 } 4333 4334 // Give the focused view a last chance to handle the dpad key. 4335 if (mView.dispatchUnhandledMove(focused, direction)) { 4336 return FINISH_HANDLED; 4337 } 4338 } else { 4339 // find the best view to give focus to in this non-touch-mode with no-focus 4340 View v = focusSearch(null, direction); 4341 if (v != null && v.requestFocus(direction)) { 4342 return FINISH_HANDLED; 4343 } 4344 } 4345 } 4346 } 4347 return FORWARD; 4348 } 4349 4350 private int processPointerEvent(QueuedInputEvent q) { 4351 final MotionEvent event = (MotionEvent)q.mEvent; 4352 4353 mAttachInfo.mUnbufferedDispatchRequested = false; 4354 final View eventTarget = 4355 (event.isFromSource(InputDevice.SOURCE_MOUSE) && mCapturingView != null) ? 4356 mCapturingView : mView; 4357 mAttachInfo.mHandlingPointerEvent = true; 4358 boolean handled = eventTarget.dispatchPointerEvent(event); 4359 maybeUpdatePointerIcon(event); 4360 mAttachInfo.mHandlingPointerEvent = false; 4361 if (mAttachInfo.mUnbufferedDispatchRequested && !mUnbufferedInputDispatch) { 4362 mUnbufferedInputDispatch = true; 4363 if (mConsumeBatchedInputScheduled) { 4364 scheduleConsumeBatchedInputImmediately(); 4365 } 4366 } 4367 return handled ? FINISH_HANDLED : FORWARD; 4368 } 4369 4370 private void maybeUpdatePointerIcon(MotionEvent event) { 4371 if (event.getPointerCount() == 1 4372 && event.isFromSource(InputDevice.SOURCE_MOUSE)) { 4373 if (event.getActionMasked() == MotionEvent.ACTION_HOVER_ENTER 4374 || event.getActionMasked() == MotionEvent.ACTION_HOVER_EXIT) { 4375 // Other apps or the window manager may change the icon shape outside of 4376 // this app, therefore the icon shape has to be reset on enter/exit event. 4377 mPointerIconShape = PointerIcon.STYLE_NOT_SPECIFIED; 4378 } 4379 4380 if (event.getActionMasked() != MotionEvent.ACTION_HOVER_EXIT) { 4381 if (!updatePointerIcon(event) && 4382 event.getActionMasked() == MotionEvent.ACTION_HOVER_MOVE) { 4383 mPointerIconShape = PointerIcon.STYLE_NOT_SPECIFIED; 4384 } 4385 } 4386 } 4387 } 4388 4389 private int processTrackballEvent(QueuedInputEvent q) { 4390 final MotionEvent event = (MotionEvent)q.mEvent; 4391 4392 if (mView.dispatchTrackballEvent(event)) { 4393 return FINISH_HANDLED; 4394 } 4395 return FORWARD; 4396 } 4397 4398 private int processGenericMotionEvent(QueuedInputEvent q) { 4399 final MotionEvent event = (MotionEvent)q.mEvent; 4400 4401 // Deliver the event to the view. 4402 if (mView.dispatchGenericMotionEvent(event)) { 4403 return FINISH_HANDLED; 4404 } 4405 return FORWARD; 4406 } 4407 } 4408 4409 private void resetPointerIcon(MotionEvent event) { 4410 mPointerIconShape = PointerIcon.STYLE_NOT_SPECIFIED; 4411 updatePointerIcon(event); 4412 } 4413 4414 private boolean updatePointerIcon(MotionEvent event) { 4415 final float x = event.getX(); 4416 final float y = event.getY(); 4417 if (mView == null) { 4418 // E.g. click outside a popup to dismiss it 4419 Slog.d(mTag, "updatePointerIcon called after view was removed"); 4420 return false; 4421 } 4422 if (x < 0 || x >= mView.getWidth() || y < 0 || y >= mView.getHeight()) { 4423 // E.g. when moving window divider with mouse 4424 Slog.d(mTag, "updatePointerIcon called with position out of bounds"); 4425 return false; 4426 } 4427 final PointerIcon pointerIcon = mView.getPointerIcon(event, x, y); 4428 final int pointerShape = (pointerIcon != null) ? 4429 pointerIcon.getStyle() : PointerIcon.STYLE_DEFAULT; 4430 4431 if (mPointerIconShape != pointerShape) { 4432 mPointerIconShape = pointerShape; 4433 if (mPointerIconShape != PointerIcon.STYLE_CUSTOM) { 4434 mCustomPointerIcon = null; 4435 InputManager.getInstance().setPointerIconShape(pointerShape); 4436 return true; 4437 } 4438 } 4439 if (mPointerIconShape == PointerIcon.STYLE_CUSTOM && 4440 !pointerIcon.equals(mCustomPointerIcon)) { 4441 mCustomPointerIcon = pointerIcon; 4442 InputManager.getInstance().setCustomPointerIcon(mCustomPointerIcon); 4443 } 4444 return true; 4445 } 4446 4447 /** 4448 * Performs synthesis of new input events from unhandled input events. 4449 */ 4450 final class SyntheticInputStage extends InputStage { 4451 private final SyntheticTrackballHandler mTrackball = new SyntheticTrackballHandler(); 4452 private final SyntheticJoystickHandler mJoystick = new SyntheticJoystickHandler(); 4453 private final SyntheticTouchNavigationHandler mTouchNavigation = 4454 new SyntheticTouchNavigationHandler(); 4455 private final SyntheticKeyboardHandler mKeyboard = new SyntheticKeyboardHandler(); 4456 4457 public SyntheticInputStage() { 4458 super(null); 4459 } 4460 4461 @Override 4462 protected int onProcess(QueuedInputEvent q) { 4463 q.mFlags |= QueuedInputEvent.FLAG_RESYNTHESIZED; 4464 if (q.mEvent instanceof MotionEvent) { 4465 final MotionEvent event = (MotionEvent)q.mEvent; 4466 final int source = event.getSource(); 4467 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 4468 mTrackball.process(event); 4469 return FINISH_HANDLED; 4470 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 4471 mJoystick.process(event); 4472 return FINISH_HANDLED; 4473 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 4474 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 4475 mTouchNavigation.process(event); 4476 return FINISH_HANDLED; 4477 } 4478 } else if ((q.mFlags & QueuedInputEvent.FLAG_UNHANDLED) != 0) { 4479 mKeyboard.process((KeyEvent)q.mEvent); 4480 return FINISH_HANDLED; 4481 } 4482 4483 return FORWARD; 4484 } 4485 4486 @Override 4487 protected void onDeliverToNext(QueuedInputEvent q) { 4488 if ((q.mFlags & QueuedInputEvent.FLAG_RESYNTHESIZED) == 0) { 4489 // Cancel related synthetic events if any prior stage has handled the event. 4490 if (q.mEvent instanceof MotionEvent) { 4491 final MotionEvent event = (MotionEvent)q.mEvent; 4492 final int source = event.getSource(); 4493 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 4494 mTrackball.cancel(event); 4495 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 4496 mJoystick.cancel(event); 4497 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 4498 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 4499 mTouchNavigation.cancel(event); 4500 } 4501 } 4502 } 4503 super.onDeliverToNext(q); 4504 } 4505 } 4506 4507 /** 4508 * Creates dpad events from unhandled trackball movements. 4509 */ 4510 final class SyntheticTrackballHandler { 4511 private final TrackballAxis mX = new TrackballAxis(); 4512 private final TrackballAxis mY = new TrackballAxis(); 4513 private long mLastTime; 4514 4515 public void process(MotionEvent event) { 4516 // Translate the trackball event into DPAD keys and try to deliver those. 4517 long curTime = SystemClock.uptimeMillis(); 4518 if ((mLastTime + MAX_TRACKBALL_DELAY) < curTime) { 4519 // It has been too long since the last movement, 4520 // so restart at the beginning. 4521 mX.reset(0); 4522 mY.reset(0); 4523 mLastTime = curTime; 4524 } 4525 4526 final int action = event.getAction(); 4527 final int metaState = event.getMetaState(); 4528 switch (action) { 4529 case MotionEvent.ACTION_DOWN: 4530 mX.reset(2); 4531 mY.reset(2); 4532 enqueueInputEvent(new KeyEvent(curTime, curTime, 4533 KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 4534 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4535 InputDevice.SOURCE_KEYBOARD)); 4536 break; 4537 case MotionEvent.ACTION_UP: 4538 mX.reset(2); 4539 mY.reset(2); 4540 enqueueInputEvent(new KeyEvent(curTime, curTime, 4541 KeyEvent.ACTION_UP, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 4542 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4543 InputDevice.SOURCE_KEYBOARD)); 4544 break; 4545 } 4546 4547 if (DEBUG_TRACKBALL) Log.v(mTag, "TB X=" + mX.position + " step=" 4548 + mX.step + " dir=" + mX.dir + " acc=" + mX.acceleration 4549 + " move=" + event.getX() 4550 + " / Y=" + mY.position + " step=" 4551 + mY.step + " dir=" + mY.dir + " acc=" + mY.acceleration 4552 + " move=" + event.getY()); 4553 final float xOff = mX.collect(event.getX(), event.getEventTime(), "X"); 4554 final float yOff = mY.collect(event.getY(), event.getEventTime(), "Y"); 4555 4556 // Generate DPAD events based on the trackball movement. 4557 // We pick the axis that has moved the most as the direction of 4558 // the DPAD. When we generate DPAD events for one axis, then the 4559 // other axis is reset -- we don't want to perform DPAD jumps due 4560 // to slight movements in the trackball when making major movements 4561 // along the other axis. 4562 int keycode = 0; 4563 int movement = 0; 4564 float accel = 1; 4565 if (xOff > yOff) { 4566 movement = mX.generate(); 4567 if (movement != 0) { 4568 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_RIGHT 4569 : KeyEvent.KEYCODE_DPAD_LEFT; 4570 accel = mX.acceleration; 4571 mY.reset(2); 4572 } 4573 } else if (yOff > 0) { 4574 movement = mY.generate(); 4575 if (movement != 0) { 4576 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_DOWN 4577 : KeyEvent.KEYCODE_DPAD_UP; 4578 accel = mY.acceleration; 4579 mX.reset(2); 4580 } 4581 } 4582 4583 if (keycode != 0) { 4584 if (movement < 0) movement = -movement; 4585 int accelMovement = (int)(movement * accel); 4586 if (DEBUG_TRACKBALL) Log.v(mTag, "Move: movement=" + movement 4587 + " accelMovement=" + accelMovement 4588 + " accel=" + accel); 4589 if (accelMovement > movement) { 4590 if (DEBUG_TRACKBALL) Log.v(mTag, "Delivering fake DPAD: " 4591 + keycode); 4592 movement--; 4593 int repeatCount = accelMovement - movement; 4594 enqueueInputEvent(new KeyEvent(curTime, curTime, 4595 KeyEvent.ACTION_MULTIPLE, keycode, repeatCount, metaState, 4596 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4597 InputDevice.SOURCE_KEYBOARD)); 4598 } 4599 while (movement > 0) { 4600 if (DEBUG_TRACKBALL) Log.v(mTag, "Delivering fake DPAD: " 4601 + keycode); 4602 movement--; 4603 curTime = SystemClock.uptimeMillis(); 4604 enqueueInputEvent(new KeyEvent(curTime, curTime, 4605 KeyEvent.ACTION_DOWN, keycode, 0, metaState, 4606 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4607 InputDevice.SOURCE_KEYBOARD)); 4608 enqueueInputEvent(new KeyEvent(curTime, curTime, 4609 KeyEvent.ACTION_UP, keycode, 0, metaState, 4610 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4611 InputDevice.SOURCE_KEYBOARD)); 4612 } 4613 mLastTime = curTime; 4614 } 4615 } 4616 4617 public void cancel(MotionEvent event) { 4618 mLastTime = Integer.MIN_VALUE; 4619 4620 // If we reach this, we consumed a trackball event. 4621 // Because we will not translate the trackball event into a key event, 4622 // touch mode will not exit, so we exit touch mode here. 4623 if (mView != null && mAdded) { 4624 ensureTouchMode(false); 4625 } 4626 } 4627 } 4628 4629 /** 4630 * Maintains state information for a single trackball axis, generating 4631 * discrete (DPAD) movements based on raw trackball motion. 4632 */ 4633 static final class TrackballAxis { 4634 /** 4635 * The maximum amount of acceleration we will apply. 4636 */ 4637 static final float MAX_ACCELERATION = 20; 4638 4639 /** 4640 * The maximum amount of time (in milliseconds) between events in order 4641 * for us to consider the user to be doing fast trackball movements, 4642 * and thus apply an acceleration. 4643 */ 4644 static final long FAST_MOVE_TIME = 150; 4645 4646 /** 4647 * Scaling factor to the time (in milliseconds) between events to how 4648 * much to multiple/divide the current acceleration. When movement 4649 * is < FAST_MOVE_TIME this multiplies the acceleration; when > 4650 * FAST_MOVE_TIME it divides it. 4651 */ 4652 static final float ACCEL_MOVE_SCALING_FACTOR = (1.0f/40); 4653 4654 static final float FIRST_MOVEMENT_THRESHOLD = 0.5f; 4655 static final float SECOND_CUMULATIVE_MOVEMENT_THRESHOLD = 2.0f; 4656 static final float SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD = 1.0f; 4657 4658 float position; 4659 float acceleration = 1; 4660 long lastMoveTime = 0; 4661 int step; 4662 int dir; 4663 int nonAccelMovement; 4664 4665 void reset(int _step) { 4666 position = 0; 4667 acceleration = 1; 4668 lastMoveTime = 0; 4669 step = _step; 4670 dir = 0; 4671 } 4672 4673 /** 4674 * Add trackball movement into the state. If the direction of movement 4675 * has been reversed, the state is reset before adding the 4676 * movement (so that you don't have to compensate for any previously 4677 * collected movement before see the result of the movement in the 4678 * new direction). 4679 * 4680 * @return Returns the absolute value of the amount of movement 4681 * collected so far. 4682 */ 4683 float collect(float off, long time, String axis) { 4684 long normTime; 4685 if (off > 0) { 4686 normTime = (long)(off * FAST_MOVE_TIME); 4687 if (dir < 0) { 4688 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to positive!"); 4689 position = 0; 4690 step = 0; 4691 acceleration = 1; 4692 lastMoveTime = 0; 4693 } 4694 dir = 1; 4695 } else if (off < 0) { 4696 normTime = (long)((-off) * FAST_MOVE_TIME); 4697 if (dir > 0) { 4698 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to negative!"); 4699 position = 0; 4700 step = 0; 4701 acceleration = 1; 4702 lastMoveTime = 0; 4703 } 4704 dir = -1; 4705 } else { 4706 normTime = 0; 4707 } 4708 4709 // The number of milliseconds between each movement that is 4710 // considered "normal" and will not result in any acceleration 4711 // or deceleration, scaled by the offset we have here. 4712 if (normTime > 0) { 4713 long delta = time - lastMoveTime; 4714 lastMoveTime = time; 4715 float acc = acceleration; 4716 if (delta < normTime) { 4717 // The user is scrolling rapidly, so increase acceleration. 4718 float scale = (normTime-delta) * ACCEL_MOVE_SCALING_FACTOR; 4719 if (scale > 1) acc *= scale; 4720 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " accelerate: off=" 4721 + off + " normTime=" + normTime + " delta=" + delta 4722 + " scale=" + scale + " acc=" + acc); 4723 acceleration = acc < MAX_ACCELERATION ? acc : MAX_ACCELERATION; 4724 } else { 4725 // The user is scrolling slowly, so decrease acceleration. 4726 float scale = (delta-normTime) * ACCEL_MOVE_SCALING_FACTOR; 4727 if (scale > 1) acc /= scale; 4728 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " deccelerate: off=" 4729 + off + " normTime=" + normTime + " delta=" + delta 4730 + " scale=" + scale + " acc=" + acc); 4731 acceleration = acc > 1 ? acc : 1; 4732 } 4733 } 4734 position += off; 4735 return Math.abs(position); 4736 } 4737 4738 /** 4739 * Generate the number of discrete movement events appropriate for 4740 * the currently collected trackball movement. 4741 * 4742 * @return Returns the number of discrete movements, either positive 4743 * or negative, or 0 if there is not enough trackball movement yet 4744 * for a discrete movement. 4745 */ 4746 int generate() { 4747 int movement = 0; 4748 nonAccelMovement = 0; 4749 do { 4750 final int dir = position >= 0 ? 1 : -1; 4751 switch (step) { 4752 // If we are going to execute the first step, then we want 4753 // to do this as soon as possible instead of waiting for 4754 // a full movement, in order to make things look responsive. 4755 case 0: 4756 if (Math.abs(position) < FIRST_MOVEMENT_THRESHOLD) { 4757 return movement; 4758 } 4759 movement += dir; 4760 nonAccelMovement += dir; 4761 step = 1; 4762 break; 4763 // If we have generated the first movement, then we need 4764 // to wait for the second complete trackball motion before 4765 // generating the second discrete movement. 4766 case 1: 4767 if (Math.abs(position) < SECOND_CUMULATIVE_MOVEMENT_THRESHOLD) { 4768 return movement; 4769 } 4770 movement += dir; 4771 nonAccelMovement += dir; 4772 position -= SECOND_CUMULATIVE_MOVEMENT_THRESHOLD * dir; 4773 step = 2; 4774 break; 4775 // After the first two, we generate discrete movements 4776 // consistently with the trackball, applying an acceleration 4777 // if the trackball is moving quickly. This is a simple 4778 // acceleration on top of what we already compute based 4779 // on how quickly the wheel is being turned, to apply 4780 // a longer increasing acceleration to continuous movement 4781 // in one direction. 4782 default: 4783 if (Math.abs(position) < SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD) { 4784 return movement; 4785 } 4786 movement += dir; 4787 position -= dir * SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD; 4788 float acc = acceleration; 4789 acc *= 1.1f; 4790 acceleration = acc < MAX_ACCELERATION ? acc : acceleration; 4791 break; 4792 } 4793 } while (true); 4794 } 4795 } 4796 4797 /** 4798 * Creates dpad events from unhandled joystick movements. 4799 */ 4800 final class SyntheticJoystickHandler extends Handler { 4801 private final static String TAG = "SyntheticJoystickHandler"; 4802 private final static int MSG_ENQUEUE_X_AXIS_KEY_REPEAT = 1; 4803 private final static int MSG_ENQUEUE_Y_AXIS_KEY_REPEAT = 2; 4804 4805 private int mLastXDirection; 4806 private int mLastYDirection; 4807 private int mLastXKeyCode; 4808 private int mLastYKeyCode; 4809 4810 public SyntheticJoystickHandler() { 4811 super(true); 4812 } 4813 4814 @Override 4815 public void handleMessage(Message msg) { 4816 switch (msg.what) { 4817 case MSG_ENQUEUE_X_AXIS_KEY_REPEAT: 4818 case MSG_ENQUEUE_Y_AXIS_KEY_REPEAT: { 4819 KeyEvent oldEvent = (KeyEvent)msg.obj; 4820 KeyEvent e = KeyEvent.changeTimeRepeat(oldEvent, 4821 SystemClock.uptimeMillis(), 4822 oldEvent.getRepeatCount() + 1); 4823 if (mAttachInfo.mHasWindowFocus) { 4824 enqueueInputEvent(e); 4825 Message m = obtainMessage(msg.what, e); 4826 m.setAsynchronous(true); 4827 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatDelay()); 4828 } 4829 } break; 4830 } 4831 } 4832 4833 public void process(MotionEvent event) { 4834 switch(event.getActionMasked()) { 4835 case MotionEvent.ACTION_CANCEL: 4836 cancel(event); 4837 break; 4838 case MotionEvent.ACTION_MOVE: 4839 update(event, true); 4840 break; 4841 default: 4842 Log.w(mTag, "Unexpected action: " + event.getActionMasked()); 4843 } 4844 } 4845 4846 private void cancel(MotionEvent event) { 4847 removeMessages(MSG_ENQUEUE_X_AXIS_KEY_REPEAT); 4848 removeMessages(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT); 4849 update(event, false); 4850 } 4851 4852 private void update(MotionEvent event, boolean synthesizeNewKeys) { 4853 final long time = event.getEventTime(); 4854 final int metaState = event.getMetaState(); 4855 final int deviceId = event.getDeviceId(); 4856 final int source = event.getSource(); 4857 4858 int xDirection = joystickAxisValueToDirection( 4859 event.getAxisValue(MotionEvent.AXIS_HAT_X)); 4860 if (xDirection == 0) { 4861 xDirection = joystickAxisValueToDirection(event.getX()); 4862 } 4863 4864 int yDirection = joystickAxisValueToDirection( 4865 event.getAxisValue(MotionEvent.AXIS_HAT_Y)); 4866 if (yDirection == 0) { 4867 yDirection = joystickAxisValueToDirection(event.getY()); 4868 } 4869 4870 if (xDirection != mLastXDirection) { 4871 if (mLastXKeyCode != 0) { 4872 removeMessages(MSG_ENQUEUE_X_AXIS_KEY_REPEAT); 4873 enqueueInputEvent(new KeyEvent(time, time, 4874 KeyEvent.ACTION_UP, mLastXKeyCode, 0, metaState, 4875 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4876 mLastXKeyCode = 0; 4877 } 4878 4879 mLastXDirection = xDirection; 4880 4881 if (xDirection != 0 && synthesizeNewKeys) { 4882 mLastXKeyCode = xDirection > 0 4883 ? KeyEvent.KEYCODE_DPAD_RIGHT : KeyEvent.KEYCODE_DPAD_LEFT; 4884 final KeyEvent e = new KeyEvent(time, time, 4885 KeyEvent.ACTION_DOWN, mLastXKeyCode, 0, metaState, 4886 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4887 enqueueInputEvent(e); 4888 Message m = obtainMessage(MSG_ENQUEUE_X_AXIS_KEY_REPEAT, e); 4889 m.setAsynchronous(true); 4890 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4891 } 4892 } 4893 4894 if (yDirection != mLastYDirection) { 4895 if (mLastYKeyCode != 0) { 4896 removeMessages(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT); 4897 enqueueInputEvent(new KeyEvent(time, time, 4898 KeyEvent.ACTION_UP, mLastYKeyCode, 0, metaState, 4899 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4900 mLastYKeyCode = 0; 4901 } 4902 4903 mLastYDirection = yDirection; 4904 4905 if (yDirection != 0 && synthesizeNewKeys) { 4906 mLastYKeyCode = yDirection > 0 4907 ? KeyEvent.KEYCODE_DPAD_DOWN : KeyEvent.KEYCODE_DPAD_UP; 4908 final KeyEvent e = new KeyEvent(time, time, 4909 KeyEvent.ACTION_DOWN, mLastYKeyCode, 0, metaState, 4910 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4911 enqueueInputEvent(e); 4912 Message m = obtainMessage(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT, e); 4913 m.setAsynchronous(true); 4914 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4915 } 4916 } 4917 } 4918 4919 private int joystickAxisValueToDirection(float value) { 4920 if (value >= 0.5f) { 4921 return 1; 4922 } else if (value <= -0.5f) { 4923 return -1; 4924 } else { 4925 return 0; 4926 } 4927 } 4928 } 4929 4930 /** 4931 * Creates dpad events from unhandled touch navigation movements. 4932 */ 4933 final class SyntheticTouchNavigationHandler extends Handler { 4934 private static final String LOCAL_TAG = "SyntheticTouchNavigationHandler"; 4935 private static final boolean LOCAL_DEBUG = false; 4936 4937 // Assumed nominal width and height in millimeters of a touch navigation pad, 4938 // if no resolution information is available from the input system. 4939 private static final float DEFAULT_WIDTH_MILLIMETERS = 48; 4940 private static final float DEFAULT_HEIGHT_MILLIMETERS = 48; 4941 4942 /* TODO: These constants should eventually be moved to ViewConfiguration. */ 4943 4944 // The nominal distance traveled to move by one unit. 4945 private static final int TICK_DISTANCE_MILLIMETERS = 12; 4946 4947 // Minimum and maximum fling velocity in ticks per second. 4948 // The minimum velocity should be set such that we perform enough ticks per 4949 // second that the fling appears to be fluid. For example, if we set the minimum 4950 // to 2 ticks per second, then there may be up to half a second delay between the next 4951 // to last and last ticks which is noticeably discrete and jerky. This value should 4952 // probably not be set to anything less than about 4. 4953 // If fling accuracy is a problem then consider tuning the tick distance instead. 4954 private static final float MIN_FLING_VELOCITY_TICKS_PER_SECOND = 6f; 4955 private static final float MAX_FLING_VELOCITY_TICKS_PER_SECOND = 20f; 4956 4957 // Fling velocity decay factor applied after each new key is emitted. 4958 // This parameter controls the deceleration and overall duration of the fling. 4959 // The fling stops automatically when its velocity drops below the minimum 4960 // fling velocity defined above. 4961 private static final float FLING_TICK_DECAY = 0.8f; 4962 4963 /* The input device that we are tracking. */ 4964 4965 private int mCurrentDeviceId = -1; 4966 private int mCurrentSource; 4967 private boolean mCurrentDeviceSupported; 4968 4969 /* Configuration for the current input device. */ 4970 4971 // The scaled tick distance. A movement of this amount should generally translate 4972 // into a single dpad event in a given direction. 4973 private float mConfigTickDistance; 4974 4975 // The minimum and maximum scaled fling velocity. 4976 private float mConfigMinFlingVelocity; 4977 private float mConfigMaxFlingVelocity; 4978 4979 /* Tracking state. */ 4980 4981 // The velocity tracker for detecting flings. 4982 private VelocityTracker mVelocityTracker; 4983 4984 // The active pointer id, or -1 if none. 4985 private int mActivePointerId = -1; 4986 4987 // Location where tracking started. 4988 private float mStartX; 4989 private float mStartY; 4990 4991 // Most recently observed position. 4992 private float mLastX; 4993 private float mLastY; 4994 4995 // Accumulated movement delta since the last direction key was sent. 4996 private float mAccumulatedX; 4997 private float mAccumulatedY; 4998 4999 // Set to true if any movement was delivered to the app. 5000 // Implies that tap slop was exceeded. 5001 private boolean mConsumedMovement; 5002 5003 // The most recently sent key down event. 5004 // The keycode remains set until the direction changes or a fling ends 5005 // so that repeated key events may be generated as required. 5006 private long mPendingKeyDownTime; 5007 private int mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 5008 private int mPendingKeyRepeatCount; 5009 private int mPendingKeyMetaState; 5010 5011 // The current fling velocity while a fling is in progress. 5012 private boolean mFlinging; 5013 private float mFlingVelocity; 5014 5015 public SyntheticTouchNavigationHandler() { 5016 super(true); 5017 } 5018 5019 public void process(MotionEvent event) { 5020 // Update the current device information. 5021 final long time = event.getEventTime(); 5022 final int deviceId = event.getDeviceId(); 5023 final int source = event.getSource(); 5024 if (mCurrentDeviceId != deviceId || mCurrentSource != source) { 5025 finishKeys(time); 5026 finishTracking(time); 5027 mCurrentDeviceId = deviceId; 5028 mCurrentSource = source; 5029 mCurrentDeviceSupported = false; 5030 InputDevice device = event.getDevice(); 5031 if (device != null) { 5032 // In order to support an input device, we must know certain 5033 // characteristics about it, such as its size and resolution. 5034 InputDevice.MotionRange xRange = device.getMotionRange(MotionEvent.AXIS_X); 5035 InputDevice.MotionRange yRange = device.getMotionRange(MotionEvent.AXIS_Y); 5036 if (xRange != null && yRange != null) { 5037 mCurrentDeviceSupported = true; 5038 5039 // Infer the resolution if it not actually known. 5040 float xRes = xRange.getResolution(); 5041 if (xRes <= 0) { 5042 xRes = xRange.getRange() / DEFAULT_WIDTH_MILLIMETERS; 5043 } 5044 float yRes = yRange.getResolution(); 5045 if (yRes <= 0) { 5046 yRes = yRange.getRange() / DEFAULT_HEIGHT_MILLIMETERS; 5047 } 5048 float nominalRes = (xRes + yRes) * 0.5f; 5049 5050 // Precompute all of the configuration thresholds we will need. 5051 mConfigTickDistance = TICK_DISTANCE_MILLIMETERS * nominalRes; 5052 mConfigMinFlingVelocity = 5053 MIN_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 5054 mConfigMaxFlingVelocity = 5055 MAX_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 5056 5057 if (LOCAL_DEBUG) { 5058 Log.d(LOCAL_TAG, "Configured device " + mCurrentDeviceId 5059 + " (" + Integer.toHexString(mCurrentSource) + "): " 5060 + ", mConfigTickDistance=" + mConfigTickDistance 5061 + ", mConfigMinFlingVelocity=" + mConfigMinFlingVelocity 5062 + ", mConfigMaxFlingVelocity=" + mConfigMaxFlingVelocity); 5063 } 5064 } 5065 } 5066 } 5067 if (!mCurrentDeviceSupported) { 5068 return; 5069 } 5070 5071 // Handle the event. 5072 final int action = event.getActionMasked(); 5073 switch (action) { 5074 case MotionEvent.ACTION_DOWN: { 5075 boolean caughtFling = mFlinging; 5076 finishKeys(time); 5077 finishTracking(time); 5078 mActivePointerId = event.getPointerId(0); 5079 mVelocityTracker = VelocityTracker.obtain(); 5080 mVelocityTracker.addMovement(event); 5081 mStartX = event.getX(); 5082 mStartY = event.getY(); 5083 mLastX = mStartX; 5084 mLastY = mStartY; 5085 mAccumulatedX = 0; 5086 mAccumulatedY = 0; 5087 5088 // If we caught a fling, then pretend that the tap slop has already 5089 // been exceeded to suppress taps whose only purpose is to stop the fling. 5090 mConsumedMovement = caughtFling; 5091 break; 5092 } 5093 5094 case MotionEvent.ACTION_MOVE: 5095 case MotionEvent.ACTION_UP: { 5096 if (mActivePointerId < 0) { 5097 break; 5098 } 5099 final int index = event.findPointerIndex(mActivePointerId); 5100 if (index < 0) { 5101 finishKeys(time); 5102 finishTracking(time); 5103 break; 5104 } 5105 5106 mVelocityTracker.addMovement(event); 5107 final float x = event.getX(index); 5108 final float y = event.getY(index); 5109 mAccumulatedX += x - mLastX; 5110 mAccumulatedY += y - mLastY; 5111 mLastX = x; 5112 mLastY = y; 5113 5114 // Consume any accumulated movement so far. 5115 final int metaState = event.getMetaState(); 5116 consumeAccumulatedMovement(time, metaState); 5117 5118 // Detect taps and flings. 5119 if (action == MotionEvent.ACTION_UP) { 5120 if (mConsumedMovement && mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 5121 // It might be a fling. 5122 mVelocityTracker.computeCurrentVelocity(1000, mConfigMaxFlingVelocity); 5123 final float vx = mVelocityTracker.getXVelocity(mActivePointerId); 5124 final float vy = mVelocityTracker.getYVelocity(mActivePointerId); 5125 if (!startFling(time, vx, vy)) { 5126 finishKeys(time); 5127 } 5128 } 5129 finishTracking(time); 5130 } 5131 break; 5132 } 5133 5134 case MotionEvent.ACTION_CANCEL: { 5135 finishKeys(time); 5136 finishTracking(time); 5137 break; 5138 } 5139 } 5140 } 5141 5142 public void cancel(MotionEvent event) { 5143 if (mCurrentDeviceId == event.getDeviceId() 5144 && mCurrentSource == event.getSource()) { 5145 final long time = event.getEventTime(); 5146 finishKeys(time); 5147 finishTracking(time); 5148 } 5149 } 5150 5151 private void finishKeys(long time) { 5152 cancelFling(); 5153 sendKeyUp(time); 5154 } 5155 5156 private void finishTracking(long time) { 5157 if (mActivePointerId >= 0) { 5158 mActivePointerId = -1; 5159 mVelocityTracker.recycle(); 5160 mVelocityTracker = null; 5161 } 5162 } 5163 5164 private void consumeAccumulatedMovement(long time, int metaState) { 5165 final float absX = Math.abs(mAccumulatedX); 5166 final float absY = Math.abs(mAccumulatedY); 5167 if (absX >= absY) { 5168 if (absX >= mConfigTickDistance) { 5169 mAccumulatedX = consumeAccumulatedMovement(time, metaState, mAccumulatedX, 5170 KeyEvent.KEYCODE_DPAD_LEFT, KeyEvent.KEYCODE_DPAD_RIGHT); 5171 mAccumulatedY = 0; 5172 mConsumedMovement = true; 5173 } 5174 } else { 5175 if (absY >= mConfigTickDistance) { 5176 mAccumulatedY = consumeAccumulatedMovement(time, metaState, mAccumulatedY, 5177 KeyEvent.KEYCODE_DPAD_UP, KeyEvent.KEYCODE_DPAD_DOWN); 5178 mAccumulatedX = 0; 5179 mConsumedMovement = true; 5180 } 5181 } 5182 } 5183 5184 private float consumeAccumulatedMovement(long time, int metaState, 5185 float accumulator, int negativeKeyCode, int positiveKeyCode) { 5186 while (accumulator <= -mConfigTickDistance) { 5187 sendKeyDownOrRepeat(time, negativeKeyCode, metaState); 5188 accumulator += mConfigTickDistance; 5189 } 5190 while (accumulator >= mConfigTickDistance) { 5191 sendKeyDownOrRepeat(time, positiveKeyCode, metaState); 5192 accumulator -= mConfigTickDistance; 5193 } 5194 return accumulator; 5195 } 5196 5197 private void sendKeyDownOrRepeat(long time, int keyCode, int metaState) { 5198 if (mPendingKeyCode != keyCode) { 5199 sendKeyUp(time); 5200 mPendingKeyDownTime = time; 5201 mPendingKeyCode = keyCode; 5202 mPendingKeyRepeatCount = 0; 5203 } else { 5204 mPendingKeyRepeatCount += 1; 5205 } 5206 mPendingKeyMetaState = metaState; 5207 5208 // Note: Normally we would pass FLAG_LONG_PRESS when the repeat count is 1 5209 // but it doesn't quite make sense when simulating the events in this way. 5210 if (LOCAL_DEBUG) { 5211 Log.d(LOCAL_TAG, "Sending key down: keyCode=" + mPendingKeyCode 5212 + ", repeatCount=" + mPendingKeyRepeatCount 5213 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 5214 } 5215 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 5216 KeyEvent.ACTION_DOWN, mPendingKeyCode, mPendingKeyRepeatCount, 5217 mPendingKeyMetaState, mCurrentDeviceId, 5218 KeyEvent.FLAG_FALLBACK, mCurrentSource)); 5219 } 5220 5221 private void sendKeyUp(long time) { 5222 if (mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 5223 if (LOCAL_DEBUG) { 5224 Log.d(LOCAL_TAG, "Sending key up: keyCode=" + mPendingKeyCode 5225 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 5226 } 5227 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 5228 KeyEvent.ACTION_UP, mPendingKeyCode, 0, mPendingKeyMetaState, 5229 mCurrentDeviceId, 0, KeyEvent.FLAG_FALLBACK, 5230 mCurrentSource)); 5231 mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 5232 } 5233 } 5234 5235 private boolean startFling(long time, float vx, float vy) { 5236 if (LOCAL_DEBUG) { 5237 Log.d(LOCAL_TAG, "Considering fling: vx=" + vx + ", vy=" + vy 5238 + ", min=" + mConfigMinFlingVelocity); 5239 } 5240 5241 // Flings must be oriented in the same direction as the preceding movements. 5242 switch (mPendingKeyCode) { 5243 case KeyEvent.KEYCODE_DPAD_LEFT: 5244 if (-vx >= mConfigMinFlingVelocity 5245 && Math.abs(vy) < mConfigMinFlingVelocity) { 5246 mFlingVelocity = -vx; 5247 break; 5248 } 5249 return false; 5250 5251 case KeyEvent.KEYCODE_DPAD_RIGHT: 5252 if (vx >= mConfigMinFlingVelocity 5253 && Math.abs(vy) < mConfigMinFlingVelocity) { 5254 mFlingVelocity = vx; 5255 break; 5256 } 5257 return false; 5258 5259 case KeyEvent.KEYCODE_DPAD_UP: 5260 if (-vy >= mConfigMinFlingVelocity 5261 && Math.abs(vx) < mConfigMinFlingVelocity) { 5262 mFlingVelocity = -vy; 5263 break; 5264 } 5265 return false; 5266 5267 case KeyEvent.KEYCODE_DPAD_DOWN: 5268 if (vy >= mConfigMinFlingVelocity 5269 && Math.abs(vx) < mConfigMinFlingVelocity) { 5270 mFlingVelocity = vy; 5271 break; 5272 } 5273 return false; 5274 } 5275 5276 // Post the first fling event. 5277 mFlinging = postFling(time); 5278 return mFlinging; 5279 } 5280 5281 private boolean postFling(long time) { 5282 // The idea here is to estimate the time when the pointer would have 5283 // traveled one tick distance unit given the current fling velocity. 5284 // This effect creates continuity of motion. 5285 if (mFlingVelocity >= mConfigMinFlingVelocity) { 5286 long delay = (long)(mConfigTickDistance / mFlingVelocity * 1000); 5287 postAtTime(mFlingRunnable, time + delay); 5288 if (LOCAL_DEBUG) { 5289 Log.d(LOCAL_TAG, "Posted fling: velocity=" 5290 + mFlingVelocity + ", delay=" + delay 5291 + ", keyCode=" + mPendingKeyCode); 5292 } 5293 return true; 5294 } 5295 return false; 5296 } 5297 5298 private void cancelFling() { 5299 if (mFlinging) { 5300 removeCallbacks(mFlingRunnable); 5301 mFlinging = false; 5302 } 5303 } 5304 5305 private final Runnable mFlingRunnable = new Runnable() { 5306 @Override 5307 public void run() { 5308 final long time = SystemClock.uptimeMillis(); 5309 sendKeyDownOrRepeat(time, mPendingKeyCode, mPendingKeyMetaState); 5310 mFlingVelocity *= FLING_TICK_DECAY; 5311 if (!postFling(time)) { 5312 mFlinging = false; 5313 finishKeys(time); 5314 } 5315 } 5316 }; 5317 } 5318 5319 final class SyntheticKeyboardHandler { 5320 public void process(KeyEvent event) { 5321 if ((event.getFlags() & KeyEvent.FLAG_FALLBACK) != 0) { 5322 return; 5323 } 5324 5325 final KeyCharacterMap kcm = event.getKeyCharacterMap(); 5326 final int keyCode = event.getKeyCode(); 5327 final int metaState = event.getMetaState(); 5328 5329 // Check for fallback actions specified by the key character map. 5330 KeyCharacterMap.FallbackAction fallbackAction = 5331 kcm.getFallbackAction(keyCode, metaState); 5332 if (fallbackAction != null) { 5333 final int flags = event.getFlags() | KeyEvent.FLAG_FALLBACK; 5334 KeyEvent fallbackEvent = KeyEvent.obtain( 5335 event.getDownTime(), event.getEventTime(), 5336 event.getAction(), fallbackAction.keyCode, 5337 event.getRepeatCount(), fallbackAction.metaState, 5338 event.getDeviceId(), event.getScanCode(), 5339 flags, event.getSource(), null); 5340 fallbackAction.recycle(); 5341 enqueueInputEvent(fallbackEvent); 5342 } 5343 } 5344 } 5345 5346 /** 5347 * Returns true if the key is used for keyboard navigation. 5348 * @param keyEvent The key event. 5349 * @return True if the key is used for keyboard navigation. 5350 */ 5351 private static boolean isNavigationKey(KeyEvent keyEvent) { 5352 switch (keyEvent.getKeyCode()) { 5353 case KeyEvent.KEYCODE_DPAD_LEFT: 5354 case KeyEvent.KEYCODE_DPAD_RIGHT: 5355 case KeyEvent.KEYCODE_DPAD_UP: 5356 case KeyEvent.KEYCODE_DPAD_DOWN: 5357 case KeyEvent.KEYCODE_DPAD_CENTER: 5358 case KeyEvent.KEYCODE_PAGE_UP: 5359 case KeyEvent.KEYCODE_PAGE_DOWN: 5360 case KeyEvent.KEYCODE_MOVE_HOME: 5361 case KeyEvent.KEYCODE_MOVE_END: 5362 case KeyEvent.KEYCODE_TAB: 5363 case KeyEvent.KEYCODE_SPACE: 5364 case KeyEvent.KEYCODE_ENTER: 5365 return true; 5366 } 5367 return false; 5368 } 5369 5370 /** 5371 * Returns true if the key is used for typing. 5372 * @param keyEvent The key event. 5373 * @return True if the key is used for typing. 5374 */ 5375 private static boolean isTypingKey(KeyEvent keyEvent) { 5376 return keyEvent.getUnicodeChar() > 0; 5377 } 5378 5379 /** 5380 * See if the key event means we should leave touch mode (and leave touch mode if so). 5381 * @param event The key event. 5382 * @return Whether this key event should be consumed (meaning the act of 5383 * leaving touch mode alone is considered the event). 5384 */ 5385 private boolean checkForLeavingTouchModeAndConsume(KeyEvent event) { 5386 // Only relevant in touch mode. 5387 if (!mAttachInfo.mInTouchMode) { 5388 return false; 5389 } 5390 5391 // Only consider leaving touch mode on DOWN or MULTIPLE actions, never on UP. 5392 final int action = event.getAction(); 5393 if (action != KeyEvent.ACTION_DOWN && action != KeyEvent.ACTION_MULTIPLE) { 5394 return false; 5395 } 5396 5397 // Don't leave touch mode if the IME told us not to. 5398 if ((event.getFlags() & KeyEvent.FLAG_KEEP_TOUCH_MODE) != 0) { 5399 return false; 5400 } 5401 5402 // If the key can be used for keyboard navigation then leave touch mode 5403 // and select a focused view if needed (in ensureTouchMode). 5404 // When a new focused view is selected, we consume the navigation key because 5405 // navigation doesn't make much sense unless a view already has focus so 5406 // the key's purpose is to set focus. 5407 if (isNavigationKey(event)) { 5408 return ensureTouchMode(false); 5409 } 5410 5411 // If the key can be used for typing then leave touch mode 5412 // and select a focused view if needed (in ensureTouchMode). 5413 // Always allow the view to process the typing key. 5414 if (isTypingKey(event)) { 5415 ensureTouchMode(false); 5416 return false; 5417 } 5418 5419 return false; 5420 } 5421 5422 /* drag/drop */ 5423 void setLocalDragState(Object obj) { 5424 mLocalDragState = obj; 5425 } 5426 5427 private void handleDragEvent(DragEvent event) { 5428 // From the root, only drag start/end/location are dispatched. entered/exited 5429 // are determined and dispatched by the viewgroup hierarchy, who then report 5430 // that back here for ultimate reporting back to the framework. 5431 if (mView != null && mAdded) { 5432 final int what = event.mAction; 5433 5434 if (what == DragEvent.ACTION_DRAG_EXITED) { 5435 // A direct EXITED event means that the window manager knows we've just crossed 5436 // a window boundary, so the current drag target within this one must have 5437 // just been exited. Send it the usual notifications and then we're done 5438 // for now. 5439 mView.dispatchDragEvent(event); 5440 } else { 5441 // Cache the drag description when the operation starts, then fill it in 5442 // on subsequent calls as a convenience 5443 if (what == DragEvent.ACTION_DRAG_STARTED) { 5444 mCurrentDragView = null; // Start the current-recipient tracking 5445 mDragDescription = event.mClipDescription; 5446 } else { 5447 event.mClipDescription = mDragDescription; 5448 } 5449 5450 // For events with a [screen] location, translate into window coordinates 5451 if ((what == DragEvent.ACTION_DRAG_LOCATION) || (what == DragEvent.ACTION_DROP)) { 5452 mDragPoint.set(event.mX, event.mY); 5453 if (mTranslator != null) { 5454 mTranslator.translatePointInScreenToAppWindow(mDragPoint); 5455 } 5456 5457 if (mCurScrollY != 0) { 5458 mDragPoint.offset(0, mCurScrollY); 5459 } 5460 5461 event.mX = mDragPoint.x; 5462 event.mY = mDragPoint.y; 5463 } 5464 5465 // Remember who the current drag target is pre-dispatch 5466 final View prevDragView = mCurrentDragView; 5467 5468 // Now dispatch the drag/drop event 5469 boolean result = mView.dispatchDragEvent(event); 5470 5471 // If we changed apparent drag target, tell the OS about it 5472 if (prevDragView != mCurrentDragView) { 5473 try { 5474 if (prevDragView != null) { 5475 mWindowSession.dragRecipientExited(mWindow); 5476 } 5477 if (mCurrentDragView != null) { 5478 mWindowSession.dragRecipientEntered(mWindow); 5479 } 5480 } catch (RemoteException e) { 5481 Slog.e(mTag, "Unable to note drag target change"); 5482 } 5483 } 5484 5485 // Report the drop result when we're done 5486 if (what == DragEvent.ACTION_DROP) { 5487 mDragDescription = null; 5488 try { 5489 Log.i(mTag, "Reporting drop result: " + result); 5490 mWindowSession.reportDropResult(mWindow, result); 5491 } catch (RemoteException e) { 5492 Log.e(mTag, "Unable to report drop result"); 5493 } 5494 } 5495 5496 // When the drag operation ends, reset drag-related state 5497 if (what == DragEvent.ACTION_DRAG_ENDED) { 5498 setLocalDragState(null); 5499 mAttachInfo.mDragToken = null; 5500 if (mAttachInfo.mDragSurface != null) { 5501 mAttachInfo.mDragSurface.release(); 5502 mAttachInfo.mDragSurface = null; 5503 } 5504 } 5505 } 5506 } 5507 event.recycle(); 5508 } 5509 5510 public void handleDispatchSystemUiVisibilityChanged(SystemUiVisibilityInfo args) { 5511 if (mSeq != args.seq) { 5512 // The sequence has changed, so we need to update our value and make 5513 // sure to do a traversal afterward so the window manager is given our 5514 // most recent data. 5515 mSeq = args.seq; 5516 mAttachInfo.mForceReportNewAttributes = true; 5517 scheduleTraversals(); 5518 } 5519 if (mView == null) return; 5520 if (args.localChanges != 0) { 5521 mView.updateLocalSystemUiVisibility(args.localValue, args.localChanges); 5522 } 5523 5524 int visibility = args.globalVisibility&View.SYSTEM_UI_CLEARABLE_FLAGS; 5525 if (visibility != mAttachInfo.mGlobalSystemUiVisibility) { 5526 mAttachInfo.mGlobalSystemUiVisibility = visibility; 5527 mView.dispatchSystemUiVisibilityChanged(visibility); 5528 } 5529 } 5530 5531 public void handleDispatchWindowShown() { 5532 mAttachInfo.mTreeObserver.dispatchOnWindowShown(); 5533 } 5534 5535 public void handleRequestKeyboardShortcuts(IResultReceiver receiver, int deviceId) { 5536 Bundle data = new Bundle(); 5537 ArrayList<KeyboardShortcutGroup> list = new ArrayList<>(); 5538 if (mView != null) { 5539 mView.requestKeyboardShortcuts(list, deviceId); 5540 } 5541 data.putParcelableArrayList(WindowManager.PARCEL_KEY_SHORTCUTS_ARRAY, list); 5542 try { 5543 receiver.send(0, data); 5544 } catch (RemoteException e) { 5545 } 5546 } 5547 5548 public void getLastTouchPoint(Point outLocation) { 5549 outLocation.x = (int) mLastTouchPoint.x; 5550 outLocation.y = (int) mLastTouchPoint.y; 5551 } 5552 5553 public int getLastTouchSource() { 5554 return mLastTouchSource; 5555 } 5556 5557 public void setDragFocus(View newDragTarget) { 5558 if (mCurrentDragView != newDragTarget) { 5559 mCurrentDragView = newDragTarget; 5560 } 5561 } 5562 5563 private AudioManager getAudioManager() { 5564 if (mView == null) { 5565 throw new IllegalStateException("getAudioManager called when there is no mView"); 5566 } 5567 if (mAudioManager == null) { 5568 mAudioManager = (AudioManager) mView.getContext().getSystemService(Context.AUDIO_SERVICE); 5569 } 5570 return mAudioManager; 5571 } 5572 5573 public AccessibilityInteractionController getAccessibilityInteractionController() { 5574 if (mView == null) { 5575 throw new IllegalStateException("getAccessibilityInteractionController" 5576 + " called when there is no mView"); 5577 } 5578 if (mAccessibilityInteractionController == null) { 5579 mAccessibilityInteractionController = new AccessibilityInteractionController(this); 5580 } 5581 return mAccessibilityInteractionController; 5582 } 5583 5584 private int relayoutWindow(WindowManager.LayoutParams params, int viewVisibility, 5585 boolean insetsPending) throws RemoteException { 5586 5587 float appScale = mAttachInfo.mApplicationScale; 5588 boolean restore = false; 5589 if (params != null && mTranslator != null) { 5590 restore = true; 5591 params.backup(); 5592 mTranslator.translateWindowLayout(params); 5593 } 5594 if (params != null) { 5595 if (DBG) Log.d(mTag, "WindowLayout in layoutWindow:" + params); 5596 } 5597 mPendingConfiguration.seq = 0; 5598 //Log.d(mTag, ">>>>>> CALLING relayout"); 5599 if (params != null && mOrigWindowType != params.type) { 5600 // For compatibility with old apps, don't crash here. 5601 if (mTargetSdkVersion < Build.VERSION_CODES.ICE_CREAM_SANDWICH) { 5602 Slog.w(mTag, "Window type can not be changed after " 5603 + "the window is added; ignoring change of " + mView); 5604 params.type = mOrigWindowType; 5605 } 5606 } 5607 int relayoutResult = mWindowSession.relayout( 5608 mWindow, mSeq, params, 5609 (int) (mView.getMeasuredWidth() * appScale + 0.5f), 5610 (int) (mView.getMeasuredHeight() * appScale + 0.5f), 5611 viewVisibility, insetsPending ? WindowManagerGlobal.RELAYOUT_INSETS_PENDING : 0, 5612 mWinFrame, mPendingOverscanInsets, mPendingContentInsets, mPendingVisibleInsets, 5613 mPendingStableInsets, mPendingOutsets, mPendingBackDropFrame, mPendingConfiguration, 5614 mSurface); 5615 5616 mPendingAlwaysConsumeNavBar = 5617 (relayoutResult & WindowManagerGlobal.RELAYOUT_RES_CONSUME_ALWAYS_NAV_BAR) != 0; 5618 5619 //Log.d(mTag, "<<<<<< BACK FROM relayout"); 5620 if (restore) { 5621 params.restore(); 5622 } 5623 5624 if (mTranslator != null) { 5625 mTranslator.translateRectInScreenToAppWinFrame(mWinFrame); 5626 mTranslator.translateRectInScreenToAppWindow(mPendingOverscanInsets); 5627 mTranslator.translateRectInScreenToAppWindow(mPendingContentInsets); 5628 mTranslator.translateRectInScreenToAppWindow(mPendingVisibleInsets); 5629 mTranslator.translateRectInScreenToAppWindow(mPendingStableInsets); 5630 } 5631 return relayoutResult; 5632 } 5633 5634 /** 5635 * {@inheritDoc} 5636 */ 5637 @Override 5638 public void playSoundEffect(int effectId) { 5639 checkThread(); 5640 5641 try { 5642 final AudioManager audioManager = getAudioManager(); 5643 5644 switch (effectId) { 5645 case SoundEffectConstants.CLICK: 5646 audioManager.playSoundEffect(AudioManager.FX_KEY_CLICK); 5647 return; 5648 case SoundEffectConstants.NAVIGATION_DOWN: 5649 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_DOWN); 5650 return; 5651 case SoundEffectConstants.NAVIGATION_LEFT: 5652 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_LEFT); 5653 return; 5654 case SoundEffectConstants.NAVIGATION_RIGHT: 5655 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_RIGHT); 5656 return; 5657 case SoundEffectConstants.NAVIGATION_UP: 5658 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_UP); 5659 return; 5660 default: 5661 throw new IllegalArgumentException("unknown effect id " + effectId + 5662 " not defined in " + SoundEffectConstants.class.getCanonicalName()); 5663 } 5664 } catch (IllegalStateException e) { 5665 // Exception thrown by getAudioManager() when mView is null 5666 Log.e(mTag, "FATAL EXCEPTION when attempting to play sound effect: " + e); 5667 e.printStackTrace(); 5668 } 5669 } 5670 5671 /** 5672 * {@inheritDoc} 5673 */ 5674 @Override 5675 public boolean performHapticFeedback(int effectId, boolean always) { 5676 try { 5677 return mWindowSession.performHapticFeedback(mWindow, effectId, always); 5678 } catch (RemoteException e) { 5679 return false; 5680 } 5681 } 5682 5683 /** 5684 * {@inheritDoc} 5685 */ 5686 @Override 5687 public View focusSearch(View focused, int direction) { 5688 checkThread(); 5689 if (!(mView instanceof ViewGroup)) { 5690 return null; 5691 } 5692 return FocusFinder.getInstance().findNextFocus((ViewGroup) mView, focused, direction); 5693 } 5694 5695 public void debug() { 5696 mView.debug(); 5697 } 5698 5699 public void dump(String prefix, FileDescriptor fd, PrintWriter writer, String[] args) { 5700 String innerPrefix = prefix + " "; 5701 writer.print(prefix); writer.println("ViewRoot:"); 5702 writer.print(innerPrefix); writer.print("mAdded="); writer.print(mAdded); 5703 writer.print(" mRemoved="); writer.println(mRemoved); 5704 writer.print(innerPrefix); writer.print("mConsumeBatchedInputScheduled="); 5705 writer.println(mConsumeBatchedInputScheduled); 5706 writer.print(innerPrefix); writer.print("mConsumeBatchedInputImmediatelyScheduled="); 5707 writer.println(mConsumeBatchedInputImmediatelyScheduled); 5708 writer.print(innerPrefix); writer.print("mPendingInputEventCount="); 5709 writer.println(mPendingInputEventCount); 5710 writer.print(innerPrefix); writer.print("mProcessInputEventsScheduled="); 5711 writer.println(mProcessInputEventsScheduled); 5712 writer.print(innerPrefix); writer.print("mTraversalScheduled="); 5713 writer.print(mTraversalScheduled); 5714 writer.print(innerPrefix); writer.print("mIsAmbientMode="); 5715 writer.print(mIsAmbientMode); 5716 if (mTraversalScheduled) { 5717 writer.print(" (barrier="); writer.print(mTraversalBarrier); writer.println(")"); 5718 } else { 5719 writer.println(); 5720 } 5721 mFirstInputStage.dump(innerPrefix, writer); 5722 5723 mChoreographer.dump(prefix, writer); 5724 5725 writer.print(prefix); writer.println("View Hierarchy:"); 5726 dumpViewHierarchy(innerPrefix, writer, mView); 5727 } 5728 5729 private void dumpViewHierarchy(String prefix, PrintWriter writer, View view) { 5730 writer.print(prefix); 5731 if (view == null) { 5732 writer.println("null"); 5733 return; 5734 } 5735 writer.println(view.toString()); 5736 if (!(view instanceof ViewGroup)) { 5737 return; 5738 } 5739 ViewGroup grp = (ViewGroup)view; 5740 final int N = grp.getChildCount(); 5741 if (N <= 0) { 5742 return; 5743 } 5744 prefix = prefix + " "; 5745 for (int i=0; i<N; i++) { 5746 dumpViewHierarchy(prefix, writer, grp.getChildAt(i)); 5747 } 5748 } 5749 5750 public void dumpGfxInfo(int[] info) { 5751 info[0] = info[1] = 0; 5752 if (mView != null) { 5753 getGfxInfo(mView, info); 5754 } 5755 } 5756 5757 private static void getGfxInfo(View view, int[] info) { 5758 RenderNode renderNode = view.mRenderNode; 5759 info[0]++; 5760 if (renderNode != null) { 5761 info[1] += renderNode.getDebugSize(); 5762 } 5763 5764 if (view instanceof ViewGroup) { 5765 ViewGroup group = (ViewGroup) view; 5766 5767 int count = group.getChildCount(); 5768 for (int i = 0; i < count; i++) { 5769 getGfxInfo(group.getChildAt(i), info); 5770 } 5771 } 5772 } 5773 5774 /** 5775 * @param immediate True, do now if not in traversal. False, put on queue and do later. 5776 * @return True, request has been queued. False, request has been completed. 5777 */ 5778 boolean die(boolean immediate) { 5779 // Make sure we do execute immediately if we are in the middle of a traversal or the damage 5780 // done by dispatchDetachedFromWindow will cause havoc on return. 5781 if (immediate && !mIsInTraversal) { 5782 doDie(); 5783 return false; 5784 } 5785 5786 if (!mIsDrawing) { 5787 destroyHardwareRenderer(); 5788 } else { 5789 Log.e(mTag, "Attempting to destroy the window while drawing!\n" + 5790 " window=" + this + ", title=" + mWindowAttributes.getTitle()); 5791 } 5792 mHandler.sendEmptyMessage(MSG_DIE); 5793 return true; 5794 } 5795 5796 void doDie() { 5797 checkThread(); 5798 if (LOCAL_LOGV) Log.v(mTag, "DIE in " + this + " of " + mSurface); 5799 synchronized (this) { 5800 if (mRemoved) { 5801 return; 5802 } 5803 mRemoved = true; 5804 if (mAdded) { 5805 dispatchDetachedFromWindow(); 5806 } 5807 5808 if (mAdded && !mFirst) { 5809 destroyHardwareRenderer(); 5810 5811 if (mView != null) { 5812 int viewVisibility = mView.getVisibility(); 5813 boolean viewVisibilityChanged = mViewVisibility != viewVisibility; 5814 if (mWindowAttributesChanged || viewVisibilityChanged) { 5815 // If layout params have been changed, first give them 5816 // to the window manager to make sure it has the correct 5817 // animation info. 5818 try { 5819 if ((relayoutWindow(mWindowAttributes, viewVisibility, false) 5820 & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 5821 mWindowSession.finishDrawing(mWindow); 5822 } 5823 } catch (RemoteException e) { 5824 } 5825 } 5826 5827 mSurface.release(); 5828 } 5829 } 5830 5831 mAdded = false; 5832 } 5833 WindowManagerGlobal.getInstance().doRemoveView(this); 5834 } 5835 5836 public void requestUpdateConfiguration(Configuration config) { 5837 Message msg = mHandler.obtainMessage(MSG_UPDATE_CONFIGURATION, config); 5838 mHandler.sendMessage(msg); 5839 } 5840 5841 public void loadSystemProperties() { 5842 mHandler.post(new Runnable() { 5843 @Override 5844 public void run() { 5845 // Profiling 5846 mProfileRendering = SystemProperties.getBoolean(PROPERTY_PROFILE_RENDERING, false); 5847 profileRendering(mAttachInfo.mHasWindowFocus); 5848 5849 // Hardware rendering 5850 if (mAttachInfo.mHardwareRenderer != null) { 5851 if (mAttachInfo.mHardwareRenderer.loadSystemProperties()) { 5852 invalidate(); 5853 } 5854 } 5855 5856 // Layout debugging 5857 boolean layout = SystemProperties.getBoolean(View.DEBUG_LAYOUT_PROPERTY, false); 5858 if (layout != mAttachInfo.mDebugLayout) { 5859 mAttachInfo.mDebugLayout = layout; 5860 if (!mHandler.hasMessages(MSG_INVALIDATE_WORLD)) { 5861 mHandler.sendEmptyMessageDelayed(MSG_INVALIDATE_WORLD, 200); 5862 } 5863 } 5864 } 5865 }); 5866 } 5867 5868 private void destroyHardwareRenderer() { 5869 ThreadedRenderer hardwareRenderer = mAttachInfo.mHardwareRenderer; 5870 5871 if (hardwareRenderer != null) { 5872 if (mView != null) { 5873 hardwareRenderer.destroyHardwareResources(mView); 5874 } 5875 hardwareRenderer.destroy(); 5876 hardwareRenderer.setRequested(false); 5877 5878 mAttachInfo.mHardwareRenderer = null; 5879 mAttachInfo.mHardwareAccelerated = false; 5880 } 5881 } 5882 5883 public void dispatchResized(Rect frame, Rect overscanInsets, Rect contentInsets, 5884 Rect visibleInsets, Rect stableInsets, Rect outsets, boolean reportDraw, 5885 Configuration newConfig, Rect backDropFrame, boolean forceLayout, 5886 boolean alwaysConsumeNavBar) { 5887 if (DEBUG_LAYOUT) Log.v(mTag, "Resizing " + this + ": frame=" + frame.toShortString() 5888 + " contentInsets=" + contentInsets.toShortString() 5889 + " visibleInsets=" + visibleInsets.toShortString() 5890 + " reportDraw=" + reportDraw 5891 + " backDropFrame=" + backDropFrame); 5892 5893 // Tell all listeners that we are resizing the window so that the chrome can get 5894 // updated as fast as possible on a separate thread, 5895 if (mDragResizing) { 5896 boolean fullscreen = frame.equals(backDropFrame); 5897 synchronized (mWindowCallbacks) { 5898 for (int i = mWindowCallbacks.size() - 1; i >= 0; i--) { 5899 mWindowCallbacks.get(i).onWindowSizeIsChanging(backDropFrame, fullscreen, 5900 visibleInsets, stableInsets); 5901 } 5902 } 5903 } 5904 5905 Message msg = mHandler.obtainMessage(reportDraw ? MSG_RESIZED_REPORT : MSG_RESIZED); 5906 if (mTranslator != null) { 5907 mTranslator.translateRectInScreenToAppWindow(frame); 5908 mTranslator.translateRectInScreenToAppWindow(overscanInsets); 5909 mTranslator.translateRectInScreenToAppWindow(contentInsets); 5910 mTranslator.translateRectInScreenToAppWindow(visibleInsets); 5911 } 5912 SomeArgs args = SomeArgs.obtain(); 5913 final boolean sameProcessCall = (Binder.getCallingPid() == android.os.Process.myPid()); 5914 args.arg1 = sameProcessCall ? new Rect(frame) : frame; 5915 args.arg2 = sameProcessCall ? new Rect(contentInsets) : contentInsets; 5916 args.arg3 = sameProcessCall ? new Rect(visibleInsets) : visibleInsets; 5917 args.arg4 = sameProcessCall && newConfig != null ? new Configuration(newConfig) : newConfig; 5918 args.arg5 = sameProcessCall ? new Rect(overscanInsets) : overscanInsets; 5919 args.arg6 = sameProcessCall ? new Rect(stableInsets) : stableInsets; 5920 args.arg7 = sameProcessCall ? new Rect(outsets) : outsets; 5921 args.arg8 = sameProcessCall ? new Rect(backDropFrame) : backDropFrame; 5922 args.argi1 = forceLayout ? 1 : 0; 5923 args.argi2 = alwaysConsumeNavBar ? 1 : 0; 5924 msg.obj = args; 5925 mHandler.sendMessage(msg); 5926 } 5927 5928 public void dispatchMoved(int newX, int newY) { 5929 if (DEBUG_LAYOUT) Log.v(mTag, "Window moved " + this + ": newX=" + newX + " newY=" + newY); 5930 if (mTranslator != null) { 5931 PointF point = new PointF(newX, newY); 5932 mTranslator.translatePointInScreenToAppWindow(point); 5933 newX = (int) (point.x + 0.5); 5934 newY = (int) (point.y + 0.5); 5935 } 5936 Message msg = mHandler.obtainMessage(MSG_WINDOW_MOVED, newX, newY); 5937 mHandler.sendMessage(msg); 5938 } 5939 5940 /** 5941 * Represents a pending input event that is waiting in a queue. 5942 * 5943 * Input events are processed in serial order by the timestamp specified by 5944 * {@link InputEvent#getEventTimeNano()}. In general, the input dispatcher delivers 5945 * one input event to the application at a time and waits for the application 5946 * to finish handling it before delivering the next one. 5947 * 5948 * However, because the application or IME can synthesize and inject multiple 5949 * key events at a time without going through the input dispatcher, we end up 5950 * needing a queue on the application's side. 5951 */ 5952 private static final class QueuedInputEvent { 5953 public static final int FLAG_DELIVER_POST_IME = 1 << 0; 5954 public static final int FLAG_DEFERRED = 1 << 1; 5955 public static final int FLAG_FINISHED = 1 << 2; 5956 public static final int FLAG_FINISHED_HANDLED = 1 << 3; 5957 public static final int FLAG_RESYNTHESIZED = 1 << 4; 5958 public static final int FLAG_UNHANDLED = 1 << 5; 5959 5960 public QueuedInputEvent mNext; 5961 5962 public InputEvent mEvent; 5963 public InputEventReceiver mReceiver; 5964 public int mFlags; 5965 5966 public boolean shouldSkipIme() { 5967 if ((mFlags & FLAG_DELIVER_POST_IME) != 0) { 5968 return true; 5969 } 5970 return mEvent instanceof MotionEvent 5971 && mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER); 5972 } 5973 5974 public boolean shouldSendToSynthesizer() { 5975 if ((mFlags & FLAG_UNHANDLED) != 0) { 5976 return true; 5977 } 5978 5979 return false; 5980 } 5981 5982 @Override 5983 public String toString() { 5984 StringBuilder sb = new StringBuilder("QueuedInputEvent{flags="); 5985 boolean hasPrevious = false; 5986 hasPrevious = flagToString("DELIVER_POST_IME", FLAG_DELIVER_POST_IME, hasPrevious, sb); 5987 hasPrevious = flagToString("DEFERRED", FLAG_DEFERRED, hasPrevious, sb); 5988 hasPrevious = flagToString("FINISHED", FLAG_FINISHED, hasPrevious, sb); 5989 hasPrevious = flagToString("FINISHED_HANDLED", FLAG_FINISHED_HANDLED, hasPrevious, sb); 5990 hasPrevious = flagToString("RESYNTHESIZED", FLAG_RESYNTHESIZED, hasPrevious, sb); 5991 hasPrevious = flagToString("UNHANDLED", FLAG_UNHANDLED, hasPrevious, sb); 5992 if (!hasPrevious) { 5993 sb.append("0"); 5994 } 5995 sb.append(", hasNextQueuedEvent=" + (mEvent != null ? "true" : "false")); 5996 sb.append(", hasInputEventReceiver=" + (mReceiver != null ? "true" : "false")); 5997 sb.append(", mEvent=" + mEvent + "}"); 5998 return sb.toString(); 5999 } 6000 6001 private boolean flagToString(String name, int flag, 6002 boolean hasPrevious, StringBuilder sb) { 6003 if ((mFlags & flag) != 0) { 6004 if (hasPrevious) { 6005 sb.append("|"); 6006 } 6007 sb.append(name); 6008 return true; 6009 } 6010 return hasPrevious; 6011 } 6012 } 6013 6014 private QueuedInputEvent obtainQueuedInputEvent(InputEvent event, 6015 InputEventReceiver receiver, int flags) { 6016 QueuedInputEvent q = mQueuedInputEventPool; 6017 if (q != null) { 6018 mQueuedInputEventPoolSize -= 1; 6019 mQueuedInputEventPool = q.mNext; 6020 q.mNext = null; 6021 } else { 6022 q = new QueuedInputEvent(); 6023 } 6024 6025 q.mEvent = event; 6026 q.mReceiver = receiver; 6027 q.mFlags = flags; 6028 return q; 6029 } 6030 6031 private void recycleQueuedInputEvent(QueuedInputEvent q) { 6032 q.mEvent = null; 6033 q.mReceiver = null; 6034 6035 if (mQueuedInputEventPoolSize < MAX_QUEUED_INPUT_EVENT_POOL_SIZE) { 6036 mQueuedInputEventPoolSize += 1; 6037 q.mNext = mQueuedInputEventPool; 6038 mQueuedInputEventPool = q; 6039 } 6040 } 6041 6042 void enqueueInputEvent(InputEvent event) { 6043 enqueueInputEvent(event, null, 0, false); 6044 } 6045 6046 void enqueueInputEvent(InputEvent event, 6047 InputEventReceiver receiver, int flags, boolean processImmediately) { 6048 adjustInputEventForCompatibility(event); 6049 QueuedInputEvent q = obtainQueuedInputEvent(event, receiver, flags); 6050 6051 // Always enqueue the input event in order, regardless of its time stamp. 6052 // We do this because the application or the IME may inject key events 6053 // in response to touch events and we want to ensure that the injected keys 6054 // are processed in the order they were received and we cannot trust that 6055 // the time stamp of injected events are monotonic. 6056 QueuedInputEvent last = mPendingInputEventTail; 6057 if (last == null) { 6058 mPendingInputEventHead = q; 6059 mPendingInputEventTail = q; 6060 } else { 6061 last.mNext = q; 6062 mPendingInputEventTail = q; 6063 } 6064 mPendingInputEventCount += 1; 6065 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 6066 mPendingInputEventCount); 6067 6068 if (processImmediately) { 6069 doProcessInputEvents(); 6070 } else { 6071 scheduleProcessInputEvents(); 6072 } 6073 } 6074 6075 private void scheduleProcessInputEvents() { 6076 if (!mProcessInputEventsScheduled) { 6077 mProcessInputEventsScheduled = true; 6078 Message msg = mHandler.obtainMessage(MSG_PROCESS_INPUT_EVENTS); 6079 msg.setAsynchronous(true); 6080 mHandler.sendMessage(msg); 6081 } 6082 } 6083 6084 void doProcessInputEvents() { 6085 // Deliver all pending input events in the queue. 6086 while (mPendingInputEventHead != null) { 6087 QueuedInputEvent q = mPendingInputEventHead; 6088 mPendingInputEventHead = q.mNext; 6089 if (mPendingInputEventHead == null) { 6090 mPendingInputEventTail = null; 6091 } 6092 q.mNext = null; 6093 6094 mPendingInputEventCount -= 1; 6095 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 6096 mPendingInputEventCount); 6097 6098 long eventTime = q.mEvent.getEventTimeNano(); 6099 long oldestEventTime = eventTime; 6100 if (q.mEvent instanceof MotionEvent) { 6101 MotionEvent me = (MotionEvent)q.mEvent; 6102 if (me.getHistorySize() > 0) { 6103 oldestEventTime = me.getHistoricalEventTimeNano(0); 6104 } 6105 } 6106 mChoreographer.mFrameInfo.updateInputEventTime(eventTime, oldestEventTime); 6107 6108 deliverInputEvent(q); 6109 } 6110 6111 // We are done processing all input events that we can process right now 6112 // so we can clear the pending flag immediately. 6113 if (mProcessInputEventsScheduled) { 6114 mProcessInputEventsScheduled = false; 6115 mHandler.removeMessages(MSG_PROCESS_INPUT_EVENTS); 6116 } 6117 } 6118 6119 private void deliverInputEvent(QueuedInputEvent q) { 6120 Trace.asyncTraceBegin(Trace.TRACE_TAG_VIEW, "deliverInputEvent", 6121 q.mEvent.getSequenceNumber()); 6122 if (mInputEventConsistencyVerifier != null) { 6123 mInputEventConsistencyVerifier.onInputEvent(q.mEvent, 0); 6124 } 6125 6126 InputStage stage; 6127 if (q.shouldSendToSynthesizer()) { 6128 stage = mSyntheticInputStage; 6129 } else { 6130 stage = q.shouldSkipIme() ? mFirstPostImeInputStage : mFirstInputStage; 6131 } 6132 6133 if (stage != null) { 6134 stage.deliver(q); 6135 } else { 6136 finishInputEvent(q); 6137 } 6138 } 6139 6140 private void finishInputEvent(QueuedInputEvent q) { 6141 Trace.asyncTraceEnd(Trace.TRACE_TAG_VIEW, "deliverInputEvent", 6142 q.mEvent.getSequenceNumber()); 6143 6144 if (q.mReceiver != null) { 6145 boolean handled = (q.mFlags & QueuedInputEvent.FLAG_FINISHED_HANDLED) != 0; 6146 q.mReceiver.finishInputEvent(q.mEvent, handled); 6147 } else { 6148 q.mEvent.recycleIfNeededAfterDispatch(); 6149 } 6150 6151 recycleQueuedInputEvent(q); 6152 } 6153 6154 private void adjustInputEventForCompatibility(InputEvent e) { 6155 if (mTargetSdkVersion < Build.VERSION_CODES.M && e instanceof MotionEvent) { 6156 MotionEvent motion = (MotionEvent) e; 6157 final int mask = 6158 MotionEvent.BUTTON_STYLUS_PRIMARY | MotionEvent.BUTTON_STYLUS_SECONDARY; 6159 final int buttonState = motion.getButtonState(); 6160 final int compatButtonState = (buttonState & mask) >> 4; 6161 if (compatButtonState != 0) { 6162 motion.setButtonState(buttonState | compatButtonState); 6163 } 6164 } 6165 } 6166 6167 static boolean isTerminalInputEvent(InputEvent event) { 6168 if (event instanceof KeyEvent) { 6169 final KeyEvent keyEvent = (KeyEvent)event; 6170 return keyEvent.getAction() == KeyEvent.ACTION_UP; 6171 } else { 6172 final MotionEvent motionEvent = (MotionEvent)event; 6173 final int action = motionEvent.getAction(); 6174 return action == MotionEvent.ACTION_UP 6175 || action == MotionEvent.ACTION_CANCEL 6176 || action == MotionEvent.ACTION_HOVER_EXIT; 6177 } 6178 } 6179 6180 void scheduleConsumeBatchedInput() { 6181 if (!mConsumeBatchedInputScheduled) { 6182 mConsumeBatchedInputScheduled = true; 6183 mChoreographer.postCallback(Choreographer.CALLBACK_INPUT, 6184 mConsumedBatchedInputRunnable, null); 6185 } 6186 } 6187 6188 void unscheduleConsumeBatchedInput() { 6189 if (mConsumeBatchedInputScheduled) { 6190 mConsumeBatchedInputScheduled = false; 6191 mChoreographer.removeCallbacks(Choreographer.CALLBACK_INPUT, 6192 mConsumedBatchedInputRunnable, null); 6193 } 6194 } 6195 6196 void scheduleConsumeBatchedInputImmediately() { 6197 if (!mConsumeBatchedInputImmediatelyScheduled) { 6198 unscheduleConsumeBatchedInput(); 6199 mConsumeBatchedInputImmediatelyScheduled = true; 6200 mHandler.post(mConsumeBatchedInputImmediatelyRunnable); 6201 } 6202 } 6203 6204 void doConsumeBatchedInput(long frameTimeNanos) { 6205 if (mConsumeBatchedInputScheduled) { 6206 mConsumeBatchedInputScheduled = false; 6207 if (mInputEventReceiver != null) { 6208 if (mInputEventReceiver.consumeBatchedInputEvents(frameTimeNanos) 6209 && frameTimeNanos != -1) { 6210 // If we consumed a batch here, we want to go ahead and schedule the 6211 // consumption of batched input events on the next frame. Otherwise, we would 6212 // wait until we have more input events pending and might get starved by other 6213 // things occurring in the process. If the frame time is -1, however, then 6214 // we're in a non-batching mode, so there's no need to schedule this. 6215 scheduleConsumeBatchedInput(); 6216 } 6217 } 6218 doProcessInputEvents(); 6219 } 6220 } 6221 6222 final class TraversalRunnable implements Runnable { 6223 @Override 6224 public void run() { 6225 doTraversal(); 6226 } 6227 } 6228 final TraversalRunnable mTraversalRunnable = new TraversalRunnable(); 6229 6230 final class WindowInputEventReceiver extends InputEventReceiver { 6231 public WindowInputEventReceiver(InputChannel inputChannel, Looper looper) { 6232 super(inputChannel, looper); 6233 } 6234 6235 @Override 6236 public void onInputEvent(InputEvent event) { 6237 enqueueInputEvent(event, this, 0, true); 6238 } 6239 6240 @Override 6241 public void onBatchedInputEventPending() { 6242 if (mUnbufferedInputDispatch) { 6243 super.onBatchedInputEventPending(); 6244 } else { 6245 scheduleConsumeBatchedInput(); 6246 } 6247 } 6248 6249 @Override 6250 public void dispose() { 6251 unscheduleConsumeBatchedInput(); 6252 super.dispose(); 6253 } 6254 } 6255 WindowInputEventReceiver mInputEventReceiver; 6256 6257 final class ConsumeBatchedInputRunnable implements Runnable { 6258 @Override 6259 public void run() { 6260 doConsumeBatchedInput(mChoreographer.getFrameTimeNanos()); 6261 } 6262 } 6263 final ConsumeBatchedInputRunnable mConsumedBatchedInputRunnable = 6264 new ConsumeBatchedInputRunnable(); 6265 boolean mConsumeBatchedInputScheduled; 6266 6267 final class ConsumeBatchedInputImmediatelyRunnable implements Runnable { 6268 @Override 6269 public void run() { 6270 doConsumeBatchedInput(-1); 6271 } 6272 } 6273 final ConsumeBatchedInputImmediatelyRunnable mConsumeBatchedInputImmediatelyRunnable = 6274 new ConsumeBatchedInputImmediatelyRunnable(); 6275 boolean mConsumeBatchedInputImmediatelyScheduled; 6276 6277 final class InvalidateOnAnimationRunnable implements Runnable { 6278 private boolean mPosted; 6279 private final ArrayList<View> mViews = new ArrayList<View>(); 6280 private final ArrayList<AttachInfo.InvalidateInfo> mViewRects = 6281 new ArrayList<AttachInfo.InvalidateInfo>(); 6282 private View[] mTempViews; 6283 private AttachInfo.InvalidateInfo[] mTempViewRects; 6284 6285 public void addView(View view) { 6286 synchronized (this) { 6287 mViews.add(view); 6288 postIfNeededLocked(); 6289 } 6290 } 6291 6292 public void addViewRect(AttachInfo.InvalidateInfo info) { 6293 synchronized (this) { 6294 mViewRects.add(info); 6295 postIfNeededLocked(); 6296 } 6297 } 6298 6299 public void removeView(View view) { 6300 synchronized (this) { 6301 mViews.remove(view); 6302 6303 for (int i = mViewRects.size(); i-- > 0; ) { 6304 AttachInfo.InvalidateInfo info = mViewRects.get(i); 6305 if (info.target == view) { 6306 mViewRects.remove(i); 6307 info.recycle(); 6308 } 6309 } 6310 6311 if (mPosted && mViews.isEmpty() && mViewRects.isEmpty()) { 6312 mChoreographer.removeCallbacks(Choreographer.CALLBACK_ANIMATION, this, null); 6313 mPosted = false; 6314 } 6315 } 6316 } 6317 6318 @Override 6319 public void run() { 6320 final int viewCount; 6321 final int viewRectCount; 6322 synchronized (this) { 6323 mPosted = false; 6324 6325 viewCount = mViews.size(); 6326 if (viewCount != 0) { 6327 mTempViews = mViews.toArray(mTempViews != null 6328 ? mTempViews : new View[viewCount]); 6329 mViews.clear(); 6330 } 6331 6332 viewRectCount = mViewRects.size(); 6333 if (viewRectCount != 0) { 6334 mTempViewRects = mViewRects.toArray(mTempViewRects != null 6335 ? mTempViewRects : new AttachInfo.InvalidateInfo[viewRectCount]); 6336 mViewRects.clear(); 6337 } 6338 } 6339 6340 for (int i = 0; i < viewCount; i++) { 6341 mTempViews[i].invalidate(); 6342 mTempViews[i] = null; 6343 } 6344 6345 for (int i = 0; i < viewRectCount; i++) { 6346 final View.AttachInfo.InvalidateInfo info = mTempViewRects[i]; 6347 info.target.invalidate(info.left, info.top, info.right, info.bottom); 6348 info.recycle(); 6349 } 6350 } 6351 6352 private void postIfNeededLocked() { 6353 if (!mPosted) { 6354 mChoreographer.postCallback(Choreographer.CALLBACK_ANIMATION, this, null); 6355 mPosted = true; 6356 } 6357 } 6358 } 6359 final InvalidateOnAnimationRunnable mInvalidateOnAnimationRunnable = 6360 new InvalidateOnAnimationRunnable(); 6361 6362 public void dispatchInvalidateDelayed(View view, long delayMilliseconds) { 6363 Message msg = mHandler.obtainMessage(MSG_INVALIDATE, view); 6364 mHandler.sendMessageDelayed(msg, delayMilliseconds); 6365 } 6366 6367 public void dispatchInvalidateRectDelayed(AttachInfo.InvalidateInfo info, 6368 long delayMilliseconds) { 6369 final Message msg = mHandler.obtainMessage(MSG_INVALIDATE_RECT, info); 6370 mHandler.sendMessageDelayed(msg, delayMilliseconds); 6371 } 6372 6373 public void dispatchInvalidateOnAnimation(View view) { 6374 mInvalidateOnAnimationRunnable.addView(view); 6375 } 6376 6377 public void dispatchInvalidateRectOnAnimation(AttachInfo.InvalidateInfo info) { 6378 mInvalidateOnAnimationRunnable.addViewRect(info); 6379 } 6380 6381 public void cancelInvalidate(View view) { 6382 mHandler.removeMessages(MSG_INVALIDATE, view); 6383 // fixme: might leak the AttachInfo.InvalidateInfo objects instead of returning 6384 // them to the pool 6385 mHandler.removeMessages(MSG_INVALIDATE_RECT, view); 6386 mInvalidateOnAnimationRunnable.removeView(view); 6387 } 6388 6389 public void dispatchInputEvent(InputEvent event) { 6390 dispatchInputEvent(event, null); 6391 } 6392 6393 public void dispatchInputEvent(InputEvent event, InputEventReceiver receiver) { 6394 SomeArgs args = SomeArgs.obtain(); 6395 args.arg1 = event; 6396 args.arg2 = receiver; 6397 Message msg = mHandler.obtainMessage(MSG_DISPATCH_INPUT_EVENT, args); 6398 msg.setAsynchronous(true); 6399 mHandler.sendMessage(msg); 6400 } 6401 6402 public void synthesizeInputEvent(InputEvent event) { 6403 Message msg = mHandler.obtainMessage(MSG_SYNTHESIZE_INPUT_EVENT, event); 6404 msg.setAsynchronous(true); 6405 mHandler.sendMessage(msg); 6406 } 6407 6408 public void dispatchKeyFromIme(KeyEvent event) { 6409 Message msg = mHandler.obtainMessage(MSG_DISPATCH_KEY_FROM_IME, event); 6410 msg.setAsynchronous(true); 6411 mHandler.sendMessage(msg); 6412 } 6413 6414 /** 6415 * Reinject unhandled {@link InputEvent}s in order to synthesize fallbacks events. 6416 * 6417 * Note that it is the responsibility of the caller of this API to recycle the InputEvent it 6418 * passes in. 6419 */ 6420 public void dispatchUnhandledInputEvent(InputEvent event) { 6421 if (event instanceof MotionEvent) { 6422 event = MotionEvent.obtain((MotionEvent) event); 6423 } 6424 synthesizeInputEvent(event); 6425 } 6426 6427 public void dispatchAppVisibility(boolean visible) { 6428 Message msg = mHandler.obtainMessage(MSG_DISPATCH_APP_VISIBILITY); 6429 msg.arg1 = visible ? 1 : 0; 6430 mHandler.sendMessage(msg); 6431 } 6432 6433 public void dispatchGetNewSurface() { 6434 Message msg = mHandler.obtainMessage(MSG_DISPATCH_GET_NEW_SURFACE); 6435 mHandler.sendMessage(msg); 6436 } 6437 6438 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 6439 Message msg = Message.obtain(); 6440 msg.what = MSG_WINDOW_FOCUS_CHANGED; 6441 msg.arg1 = hasFocus ? 1 : 0; 6442 msg.arg2 = inTouchMode ? 1 : 0; 6443 mHandler.sendMessage(msg); 6444 } 6445 6446 public void dispatchWindowShown() { 6447 mHandler.sendEmptyMessage(MSG_DISPATCH_WINDOW_SHOWN); 6448 } 6449 6450 public void dispatchCloseSystemDialogs(String reason) { 6451 Message msg = Message.obtain(); 6452 msg.what = MSG_CLOSE_SYSTEM_DIALOGS; 6453 msg.obj = reason; 6454 mHandler.sendMessage(msg); 6455 } 6456 6457 public void dispatchDragEvent(DragEvent event) { 6458 final int what; 6459 if (event.getAction() == DragEvent.ACTION_DRAG_LOCATION) { 6460 what = MSG_DISPATCH_DRAG_LOCATION_EVENT; 6461 mHandler.removeMessages(what); 6462 } else { 6463 what = MSG_DISPATCH_DRAG_EVENT; 6464 } 6465 Message msg = mHandler.obtainMessage(what, event); 6466 mHandler.sendMessage(msg); 6467 } 6468 6469 public void updatePointerIcon(float x, float y) { 6470 final int what = MSG_UPDATE_POINTER_ICON; 6471 mHandler.removeMessages(what); 6472 final long now = SystemClock.uptimeMillis(); 6473 final MotionEvent event = MotionEvent.obtain( 6474 0, now, MotionEvent.ACTION_HOVER_MOVE, x, y, 0); 6475 Message msg = mHandler.obtainMessage(what, event); 6476 mHandler.sendMessage(msg); 6477 } 6478 6479 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 6480 int localValue, int localChanges) { 6481 SystemUiVisibilityInfo args = new SystemUiVisibilityInfo(); 6482 args.seq = seq; 6483 args.globalVisibility = globalVisibility; 6484 args.localValue = localValue; 6485 args.localChanges = localChanges; 6486 mHandler.sendMessage(mHandler.obtainMessage(MSG_DISPATCH_SYSTEM_UI_VISIBILITY, args)); 6487 } 6488 6489 public void dispatchCheckFocus() { 6490 if (!mHandler.hasMessages(MSG_CHECK_FOCUS)) { 6491 // This will result in a call to checkFocus() below. 6492 mHandler.sendEmptyMessage(MSG_CHECK_FOCUS); 6493 } 6494 } 6495 6496 public void dispatchRequestKeyboardShortcuts(IResultReceiver receiver, int deviceId) { 6497 mHandler.obtainMessage( 6498 MSG_REQUEST_KEYBOARD_SHORTCUTS, deviceId, 0, receiver).sendToTarget(); 6499 } 6500 6501 /** 6502 * Post a callback to send a 6503 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 6504 * This event is send at most once every 6505 * {@link ViewConfiguration#getSendRecurringAccessibilityEventsInterval()}. 6506 */ 6507 private void postSendWindowContentChangedCallback(View source, int changeType) { 6508 if (mSendWindowContentChangedAccessibilityEvent == null) { 6509 mSendWindowContentChangedAccessibilityEvent = 6510 new SendWindowContentChangedAccessibilityEvent(); 6511 } 6512 mSendWindowContentChangedAccessibilityEvent.runOrPost(source, changeType); 6513 } 6514 6515 /** 6516 * Remove a posted callback to send a 6517 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 6518 */ 6519 private void removeSendWindowContentChangedCallback() { 6520 if (mSendWindowContentChangedAccessibilityEvent != null) { 6521 mHandler.removeCallbacks(mSendWindowContentChangedAccessibilityEvent); 6522 } 6523 } 6524 6525 @Override 6526 public boolean showContextMenuForChild(View originalView) { 6527 return false; 6528 } 6529 6530 @Override 6531 public boolean showContextMenuForChild(View originalView, float x, float y) { 6532 return false; 6533 } 6534 6535 @Override 6536 public ActionMode startActionModeForChild(View originalView, ActionMode.Callback callback) { 6537 return null; 6538 } 6539 6540 @Override 6541 public ActionMode startActionModeForChild( 6542 View originalView, ActionMode.Callback callback, int type) { 6543 return null; 6544 } 6545 6546 @Override 6547 public void createContextMenu(ContextMenu menu) { 6548 } 6549 6550 @Override 6551 public void childDrawableStateChanged(View child) { 6552 } 6553 6554 @Override 6555 public boolean requestSendAccessibilityEvent(View child, AccessibilityEvent event) { 6556 if (mView == null || mStopped || mPausedForTransition) { 6557 return false; 6558 } 6559 // Intercept accessibility focus events fired by virtual nodes to keep 6560 // track of accessibility focus position in such nodes. 6561 final int eventType = event.getEventType(); 6562 switch (eventType) { 6563 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUSED: { 6564 final long sourceNodeId = event.getSourceNodeId(); 6565 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 6566 sourceNodeId); 6567 View source = mView.findViewByAccessibilityId(accessibilityViewId); 6568 if (source != null) { 6569 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 6570 if (provider != null) { 6571 final int virtualNodeId = AccessibilityNodeInfo.getVirtualDescendantId( 6572 sourceNodeId); 6573 final AccessibilityNodeInfo node; 6574 if (virtualNodeId == AccessibilityNodeInfo.UNDEFINED_ITEM_ID) { 6575 node = provider.createAccessibilityNodeInfo( 6576 AccessibilityNodeProvider.HOST_VIEW_ID); 6577 } else { 6578 node = provider.createAccessibilityNodeInfo(virtualNodeId); 6579 } 6580 setAccessibilityFocus(source, node); 6581 } 6582 } 6583 } break; 6584 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUS_CLEARED: { 6585 final long sourceNodeId = event.getSourceNodeId(); 6586 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 6587 sourceNodeId); 6588 View source = mView.findViewByAccessibilityId(accessibilityViewId); 6589 if (source != null) { 6590 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 6591 if (provider != null) { 6592 setAccessibilityFocus(null, null); 6593 } 6594 } 6595 } break; 6596 6597 6598 case AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED: { 6599 handleWindowContentChangedEvent(event); 6600 } break; 6601 } 6602 mAccessibilityManager.sendAccessibilityEvent(event); 6603 return true; 6604 } 6605 6606 /** 6607 * Updates the focused virtual view, when necessary, in response to a 6608 * content changed event. 6609 * <p> 6610 * This is necessary to get updated bounds after a position change. 6611 * 6612 * @param event an accessibility event of type 6613 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} 6614 */ 6615 private void handleWindowContentChangedEvent(AccessibilityEvent event) { 6616 final View focusedHost = mAccessibilityFocusedHost; 6617 if (focusedHost == null || mAccessibilityFocusedVirtualView == null) { 6618 // No virtual view focused, nothing to do here. 6619 return; 6620 } 6621 6622 final AccessibilityNodeProvider provider = focusedHost.getAccessibilityNodeProvider(); 6623 if (provider == null) { 6624 // Error state: virtual view with no provider. Clear focus. 6625 mAccessibilityFocusedHost = null; 6626 mAccessibilityFocusedVirtualView = null; 6627 focusedHost.clearAccessibilityFocusNoCallbacks(); 6628 return; 6629 } 6630 6631 // We only care about change types that may affect the bounds of the 6632 // focused virtual view. 6633 final int changes = event.getContentChangeTypes(); 6634 if ((changes & AccessibilityEvent.CONTENT_CHANGE_TYPE_SUBTREE) == 0 6635 && changes != AccessibilityEvent.CONTENT_CHANGE_TYPE_UNDEFINED) { 6636 return; 6637 } 6638 6639 final long eventSourceNodeId = event.getSourceNodeId(); 6640 final int changedViewId = AccessibilityNodeInfo.getAccessibilityViewId(eventSourceNodeId); 6641 6642 // Search up the tree for subtree containment. 6643 boolean hostInSubtree = false; 6644 View root = mAccessibilityFocusedHost; 6645 while (root != null && !hostInSubtree) { 6646 if (changedViewId == root.getAccessibilityViewId()) { 6647 hostInSubtree = true; 6648 } else { 6649 final ViewParent parent = root.getParent(); 6650 if (parent instanceof View) { 6651 root = (View) parent; 6652 } else { 6653 root = null; 6654 } 6655 } 6656 } 6657 6658 // We care only about changes in subtrees containing the host view. 6659 if (!hostInSubtree) { 6660 return; 6661 } 6662 6663 final long focusedSourceNodeId = mAccessibilityFocusedVirtualView.getSourceNodeId(); 6664 int focusedChildId = AccessibilityNodeInfo.getVirtualDescendantId(focusedSourceNodeId); 6665 if (focusedChildId == AccessibilityNodeInfo.UNDEFINED_ITEM_ID) { 6666 // TODO: Should we clear the focused virtual view? 6667 focusedChildId = AccessibilityNodeProvider.HOST_VIEW_ID; 6668 } 6669 6670 // Refresh the node for the focused virtual view. 6671 final Rect oldBounds = mTempRect; 6672 mAccessibilityFocusedVirtualView.getBoundsInScreen(oldBounds); 6673 mAccessibilityFocusedVirtualView = provider.createAccessibilityNodeInfo(focusedChildId); 6674 if (mAccessibilityFocusedVirtualView == null) { 6675 // Error state: The node no longer exists. Clear focus. 6676 mAccessibilityFocusedHost = null; 6677 focusedHost.clearAccessibilityFocusNoCallbacks(); 6678 6679 // This will probably fail, but try to keep the provider's internal 6680 // state consistent by clearing focus. 6681 provider.performAction(focusedChildId, 6682 AccessibilityAction.ACTION_CLEAR_ACCESSIBILITY_FOCUS.getId(), null); 6683 invalidateRectOnScreen(oldBounds); 6684 } else { 6685 // The node was refreshed, invalidate bounds if necessary. 6686 final Rect newBounds = mAccessibilityFocusedVirtualView.getBoundsInScreen(); 6687 if (!oldBounds.equals(newBounds)) { 6688 oldBounds.union(newBounds); 6689 invalidateRectOnScreen(oldBounds); 6690 } 6691 } 6692 } 6693 6694 @Override 6695 public void notifySubtreeAccessibilityStateChanged(View child, View source, int changeType) { 6696 postSendWindowContentChangedCallback(source, changeType); 6697 } 6698 6699 @Override 6700 public boolean canResolveLayoutDirection() { 6701 return true; 6702 } 6703 6704 @Override 6705 public boolean isLayoutDirectionResolved() { 6706 return true; 6707 } 6708 6709 @Override 6710 public int getLayoutDirection() { 6711 return View.LAYOUT_DIRECTION_RESOLVED_DEFAULT; 6712 } 6713 6714 @Override 6715 public boolean canResolveTextDirection() { 6716 return true; 6717 } 6718 6719 @Override 6720 public boolean isTextDirectionResolved() { 6721 return true; 6722 } 6723 6724 @Override 6725 public int getTextDirection() { 6726 return View.TEXT_DIRECTION_RESOLVED_DEFAULT; 6727 } 6728 6729 @Override 6730 public boolean canResolveTextAlignment() { 6731 return true; 6732 } 6733 6734 @Override 6735 public boolean isTextAlignmentResolved() { 6736 return true; 6737 } 6738 6739 @Override 6740 public int getTextAlignment() { 6741 return View.TEXT_ALIGNMENT_RESOLVED_DEFAULT; 6742 } 6743 6744 private View getCommonPredecessor(View first, View second) { 6745 if (mTempHashSet == null) { 6746 mTempHashSet = new HashSet<View>(); 6747 } 6748 HashSet<View> seen = mTempHashSet; 6749 seen.clear(); 6750 View firstCurrent = first; 6751 while (firstCurrent != null) { 6752 seen.add(firstCurrent); 6753 ViewParent firstCurrentParent = firstCurrent.mParent; 6754 if (firstCurrentParent instanceof View) { 6755 firstCurrent = (View) firstCurrentParent; 6756 } else { 6757 firstCurrent = null; 6758 } 6759 } 6760 View secondCurrent = second; 6761 while (secondCurrent != null) { 6762 if (seen.contains(secondCurrent)) { 6763 seen.clear(); 6764 return secondCurrent; 6765 } 6766 ViewParent secondCurrentParent = secondCurrent.mParent; 6767 if (secondCurrentParent instanceof View) { 6768 secondCurrent = (View) secondCurrentParent; 6769 } else { 6770 secondCurrent = null; 6771 } 6772 } 6773 seen.clear(); 6774 return null; 6775 } 6776 6777 void checkThread() { 6778 if (mThread != Thread.currentThread()) { 6779 throw new CalledFromWrongThreadException( 6780 "Only the original thread that created a view hierarchy can touch its views."); 6781 } 6782 } 6783 6784 @Override 6785 public void requestDisallowInterceptTouchEvent(boolean disallowIntercept) { 6786 // ViewAncestor never intercepts touch event, so this can be a no-op 6787 } 6788 6789 @Override 6790 public boolean requestChildRectangleOnScreen(View child, Rect rectangle, boolean immediate) { 6791 if (rectangle == null) { 6792 return scrollToRectOrFocus(null, immediate); 6793 } 6794 rectangle.offset(child.getLeft() - child.getScrollX(), 6795 child.getTop() - child.getScrollY()); 6796 final boolean scrolled = scrollToRectOrFocus(rectangle, immediate); 6797 mTempRect.set(rectangle); 6798 mTempRect.offset(0, -mCurScrollY); 6799 mTempRect.offset(mAttachInfo.mWindowLeft, mAttachInfo.mWindowTop); 6800 try { 6801 mWindowSession.onRectangleOnScreenRequested(mWindow, mTempRect); 6802 } catch (RemoteException re) { 6803 /* ignore */ 6804 } 6805 return scrolled; 6806 } 6807 6808 @Override 6809 public void childHasTransientStateChanged(View child, boolean hasTransientState) { 6810 // Do nothing. 6811 } 6812 6813 @Override 6814 public boolean onStartNestedScroll(View child, View target, int nestedScrollAxes) { 6815 return false; 6816 } 6817 6818 @Override 6819 public void onStopNestedScroll(View target) { 6820 } 6821 6822 @Override 6823 public void onNestedScrollAccepted(View child, View target, int nestedScrollAxes) { 6824 } 6825 6826 @Override 6827 public void onNestedScroll(View target, int dxConsumed, int dyConsumed, 6828 int dxUnconsumed, int dyUnconsumed) { 6829 } 6830 6831 @Override 6832 public void onNestedPreScroll(View target, int dx, int dy, int[] consumed) { 6833 } 6834 6835 @Override 6836 public boolean onNestedFling(View target, float velocityX, float velocityY, boolean consumed) { 6837 return false; 6838 } 6839 6840 @Override 6841 public boolean onNestedPreFling(View target, float velocityX, float velocityY) { 6842 return false; 6843 } 6844 6845 @Override 6846 public boolean onNestedPrePerformAccessibilityAction(View target, int action, Bundle args) { 6847 return false; 6848 } 6849 6850 /** 6851 * Force the window to report its next draw. 6852 * <p> 6853 * This method is only supposed to be used to speed up the interaction from SystemUI and window 6854 * manager when waiting for the first frame to be drawn when turning on the screen. DO NOT USE 6855 * unless you fully understand this interaction. 6856 * @hide 6857 */ 6858 public void setReportNextDraw() { 6859 mReportNextDraw = true; 6860 invalidate(); 6861 } 6862 6863 void changeCanvasOpacity(boolean opaque) { 6864 Log.d(mTag, "changeCanvasOpacity: opaque=" + opaque); 6865 if (mAttachInfo.mHardwareRenderer != null) { 6866 mAttachInfo.mHardwareRenderer.setOpaque(opaque); 6867 } 6868 } 6869 6870 class TakenSurfaceHolder extends BaseSurfaceHolder { 6871 @Override 6872 public boolean onAllowLockCanvas() { 6873 return mDrawingAllowed; 6874 } 6875 6876 @Override 6877 public void onRelayoutContainer() { 6878 // Not currently interesting -- from changing between fixed and layout size. 6879 } 6880 6881 @Override 6882 public void setFormat(int format) { 6883 ((RootViewSurfaceTaker)mView).setSurfaceFormat(format); 6884 } 6885 6886 @Override 6887 public void setType(int type) { 6888 ((RootViewSurfaceTaker)mView).setSurfaceType(type); 6889 } 6890 6891 @Override 6892 public void onUpdateSurface() { 6893 // We take care of format and type changes on our own. 6894 throw new IllegalStateException("Shouldn't be here"); 6895 } 6896 6897 @Override 6898 public boolean isCreating() { 6899 return mIsCreating; 6900 } 6901 6902 @Override 6903 public void setFixedSize(int width, int height) { 6904 throw new UnsupportedOperationException( 6905 "Currently only support sizing from layout"); 6906 } 6907 6908 @Override 6909 public void setKeepScreenOn(boolean screenOn) { 6910 ((RootViewSurfaceTaker)mView).setSurfaceKeepScreenOn(screenOn); 6911 } 6912 } 6913 6914 static class W extends IWindow.Stub { 6915 private final WeakReference<ViewRootImpl> mViewAncestor; 6916 private final IWindowSession mWindowSession; 6917 6918 W(ViewRootImpl viewAncestor) { 6919 mViewAncestor = new WeakReference<ViewRootImpl>(viewAncestor); 6920 mWindowSession = viewAncestor.mWindowSession; 6921 } 6922 6923 @Override 6924 public void resized(Rect frame, Rect overscanInsets, Rect contentInsets, 6925 Rect visibleInsets, Rect stableInsets, Rect outsets, boolean reportDraw, 6926 Configuration newConfig, Rect backDropFrame, boolean forceLayout, 6927 boolean alwaysConsumeNavBar) { 6928 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6929 if (viewAncestor != null) { 6930 viewAncestor.dispatchResized(frame, overscanInsets, contentInsets, 6931 visibleInsets, stableInsets, outsets, reportDraw, newConfig, backDropFrame, 6932 forceLayout, alwaysConsumeNavBar); 6933 } 6934 } 6935 6936 @Override 6937 public void moved(int newX, int newY) { 6938 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6939 if (viewAncestor != null) { 6940 viewAncestor.dispatchMoved(newX, newY); 6941 } 6942 } 6943 6944 @Override 6945 public void dispatchAppVisibility(boolean visible) { 6946 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6947 if (viewAncestor != null) { 6948 viewAncestor.dispatchAppVisibility(visible); 6949 } 6950 } 6951 6952 @Override 6953 public void dispatchGetNewSurface() { 6954 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6955 if (viewAncestor != null) { 6956 viewAncestor.dispatchGetNewSurface(); 6957 } 6958 } 6959 6960 @Override 6961 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 6962 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6963 if (viewAncestor != null) { 6964 viewAncestor.windowFocusChanged(hasFocus, inTouchMode); 6965 } 6966 } 6967 6968 private static int checkCallingPermission(String permission) { 6969 try { 6970 return ActivityManagerNative.getDefault().checkPermission( 6971 permission, Binder.getCallingPid(), Binder.getCallingUid()); 6972 } catch (RemoteException e) { 6973 return PackageManager.PERMISSION_DENIED; 6974 } 6975 } 6976 6977 @Override 6978 public void executeCommand(String command, String parameters, ParcelFileDescriptor out) { 6979 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6980 if (viewAncestor != null) { 6981 final View view = viewAncestor.mView; 6982 if (view != null) { 6983 if (checkCallingPermission(Manifest.permission.DUMP) != 6984 PackageManager.PERMISSION_GRANTED) { 6985 throw new SecurityException("Insufficient permissions to invoke" 6986 + " executeCommand() from pid=" + Binder.getCallingPid() 6987 + ", uid=" + Binder.getCallingUid()); 6988 } 6989 6990 OutputStream clientStream = null; 6991 try { 6992 clientStream = new ParcelFileDescriptor.AutoCloseOutputStream(out); 6993 ViewDebug.dispatchCommand(view, command, parameters, clientStream); 6994 } catch (IOException e) { 6995 e.printStackTrace(); 6996 } finally { 6997 if (clientStream != null) { 6998 try { 6999 clientStream.close(); 7000 } catch (IOException e) { 7001 e.printStackTrace(); 7002 } 7003 } 7004 } 7005 } 7006 } 7007 } 7008 7009 @Override 7010 public void closeSystemDialogs(String reason) { 7011 final ViewRootImpl viewAncestor = mViewAncestor.get(); 7012 if (viewAncestor != null) { 7013 viewAncestor.dispatchCloseSystemDialogs(reason); 7014 } 7015 } 7016 7017 @Override 7018 public void dispatchWallpaperOffsets(float x, float y, float xStep, float yStep, 7019 boolean sync) { 7020 if (sync) { 7021 try { 7022 mWindowSession.wallpaperOffsetsComplete(asBinder()); 7023 } catch (RemoteException e) { 7024 } 7025 } 7026 } 7027 7028 @Override 7029 public void dispatchWallpaperCommand(String action, int x, int y, 7030 int z, Bundle extras, boolean sync) { 7031 if (sync) { 7032 try { 7033 mWindowSession.wallpaperCommandComplete(asBinder(), null); 7034 } catch (RemoteException e) { 7035 } 7036 } 7037 } 7038 7039 /* Drag/drop */ 7040 @Override 7041 public void dispatchDragEvent(DragEvent event) { 7042 final ViewRootImpl viewAncestor = mViewAncestor.get(); 7043 if (viewAncestor != null) { 7044 viewAncestor.dispatchDragEvent(event); 7045 } 7046 } 7047 7048 @Override 7049 public void updatePointerIcon(float x, float y) { 7050 final ViewRootImpl viewAncestor = mViewAncestor.get(); 7051 if (viewAncestor != null) { 7052 viewAncestor.updatePointerIcon(x, y); 7053 } 7054 } 7055 7056 @Override 7057 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 7058 int localValue, int localChanges) { 7059 final ViewRootImpl viewAncestor = mViewAncestor.get(); 7060 if (viewAncestor != null) { 7061 viewAncestor.dispatchSystemUiVisibilityChanged(seq, globalVisibility, 7062 localValue, localChanges); 7063 } 7064 } 7065 7066 @Override 7067 public void dispatchWindowShown() { 7068 final ViewRootImpl viewAncestor = mViewAncestor.get(); 7069 if (viewAncestor != null) { 7070 viewAncestor.dispatchWindowShown(); 7071 } 7072 } 7073 7074 @Override 7075 public void requestAppKeyboardShortcuts(IResultReceiver receiver, int deviceId) { 7076 ViewRootImpl viewAncestor = mViewAncestor.get(); 7077 if (viewAncestor != null) { 7078 viewAncestor.dispatchRequestKeyboardShortcuts(receiver, deviceId); 7079 } 7080 } 7081 } 7082 7083 public static final class CalledFromWrongThreadException extends AndroidRuntimeException { 7084 public CalledFromWrongThreadException(String msg) { 7085 super(msg); 7086 } 7087 } 7088 7089 static HandlerActionQueue getRunQueue() { 7090 HandlerActionQueue rq = sRunQueues.get(); 7091 if (rq != null) { 7092 return rq; 7093 } 7094 rq = new HandlerActionQueue(); 7095 sRunQueues.set(rq); 7096 return rq; 7097 } 7098 7099 /** 7100 * Start a drag resizing which will inform all listeners that a window resize is taking place. 7101 */ 7102 private void startDragResizing(Rect initialBounds, boolean fullscreen, Rect systemInsets, 7103 Rect stableInsets, int resizeMode) { 7104 if (!mDragResizing) { 7105 mDragResizing = true; 7106 for (int i = mWindowCallbacks.size() - 1; i >= 0; i--) { 7107 mWindowCallbacks.get(i).onWindowDragResizeStart(initialBounds, fullscreen, 7108 systemInsets, stableInsets, resizeMode); 7109 } 7110 mFullRedrawNeeded = true; 7111 } 7112 } 7113 7114 /** 7115 * End a drag resize which will inform all listeners that a window resize has ended. 7116 */ 7117 private void endDragResizing() { 7118 if (mDragResizing) { 7119 mDragResizing = false; 7120 for (int i = mWindowCallbacks.size() - 1; i >= 0; i--) { 7121 mWindowCallbacks.get(i).onWindowDragResizeEnd(); 7122 } 7123 mFullRedrawNeeded = true; 7124 } 7125 } 7126 7127 private boolean updateContentDrawBounds() { 7128 boolean updated = false; 7129 for (int i = mWindowCallbacks.size() - 1; i >= 0; i--) { 7130 updated |= mWindowCallbacks.get(i).onContentDrawn( 7131 mWindowAttributes.surfaceInsets.left, 7132 mWindowAttributes.surfaceInsets.top, 7133 mWidth, mHeight); 7134 } 7135 return updated | (mDragResizing && mReportNextDraw); 7136 } 7137 7138 private void requestDrawWindow() { 7139 if (mReportNextDraw) { 7140 mWindowDrawCountDown = new CountDownLatch(mWindowCallbacks.size()); 7141 } 7142 for (int i = mWindowCallbacks.size() - 1; i >= 0; i--) { 7143 mWindowCallbacks.get(i).onRequestDraw(mReportNextDraw); 7144 } 7145 } 7146 7147 /** 7148 * Tells this instance that its corresponding activity has just relaunched. In this case, we 7149 * need to force a relayout of the window to make sure we get the correct bounds from window 7150 * manager. 7151 */ 7152 public void reportActivityRelaunched() { 7153 mActivityRelaunched = true; 7154 } 7155 7156 /** 7157 * Class for managing the accessibility interaction connection 7158 * based on the global accessibility state. 7159 */ 7160 final class AccessibilityInteractionConnectionManager 7161 implements AccessibilityStateChangeListener { 7162 @Override 7163 public void onAccessibilityStateChanged(boolean enabled) { 7164 if (enabled) { 7165 ensureConnection(); 7166 if (mAttachInfo.mHasWindowFocus) { 7167 mView.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 7168 View focusedView = mView.findFocus(); 7169 if (focusedView != null && focusedView != mView) { 7170 focusedView.sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_FOCUSED); 7171 } 7172 } 7173 } else { 7174 ensureNoConnection(); 7175 mHandler.obtainMessage(MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST).sendToTarget(); 7176 } 7177 } 7178 7179 public void ensureConnection() { 7180 final boolean registered = 7181 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED_ITEM_ID; 7182 if (!registered) { 7183 mAttachInfo.mAccessibilityWindowId = 7184 mAccessibilityManager.addAccessibilityInteractionConnection(mWindow, 7185 new AccessibilityInteractionConnection(ViewRootImpl.this)); 7186 } 7187 } 7188 7189 public void ensureNoConnection() { 7190 final boolean registered = 7191 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED_ITEM_ID; 7192 if (registered) { 7193 mAttachInfo.mAccessibilityWindowId = AccessibilityNodeInfo.UNDEFINED_ITEM_ID; 7194 mAccessibilityManager.removeAccessibilityInteractionConnection(mWindow); 7195 } 7196 } 7197 } 7198 7199 final class HighContrastTextManager implements HighTextContrastChangeListener { 7200 HighContrastTextManager() { 7201 mAttachInfo.mHighContrastText = mAccessibilityManager.isHighTextContrastEnabled(); 7202 } 7203 @Override 7204 public void onHighTextContrastStateChanged(boolean enabled) { 7205 mAttachInfo.mHighContrastText = enabled; 7206 7207 // Destroy Displaylists so they can be recreated with high contrast recordings 7208 destroyHardwareResources(); 7209 7210 // Schedule redraw, which will rerecord + redraw all text 7211 invalidate(); 7212 } 7213 } 7214 7215 /** 7216 * This class is an interface this ViewAncestor provides to the 7217 * AccessibilityManagerService to the latter can interact with 7218 * the view hierarchy in this ViewAncestor. 7219 */ 7220 static final class AccessibilityInteractionConnection 7221 extends IAccessibilityInteractionConnection.Stub { 7222 private final WeakReference<ViewRootImpl> mViewRootImpl; 7223 7224 AccessibilityInteractionConnection(ViewRootImpl viewRootImpl) { 7225 mViewRootImpl = new WeakReference<ViewRootImpl>(viewRootImpl); 7226 } 7227 7228 @Override 7229 public void findAccessibilityNodeInfoByAccessibilityId(long accessibilityNodeId, 7230 Region interactiveRegion, int interactionId, 7231 IAccessibilityInteractionConnectionCallback callback, int flags, 7232 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 7233 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 7234 if (viewRootImpl != null && viewRootImpl.mView != null) { 7235 viewRootImpl.getAccessibilityInteractionController() 7236 .findAccessibilityNodeInfoByAccessibilityIdClientThread(accessibilityNodeId, 7237 interactiveRegion, interactionId, callback, flags, interrogatingPid, 7238 interrogatingTid, spec); 7239 } else { 7240 // We cannot make the call and notify the caller so it does not wait. 7241 try { 7242 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 7243 } catch (RemoteException re) { 7244 /* best effort - ignore */ 7245 } 7246 } 7247 } 7248 7249 @Override 7250 public void performAccessibilityAction(long accessibilityNodeId, int action, 7251 Bundle arguments, int interactionId, 7252 IAccessibilityInteractionConnectionCallback callback, int flags, 7253 int interrogatingPid, long interrogatingTid) { 7254 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 7255 if (viewRootImpl != null && viewRootImpl.mView != null) { 7256 viewRootImpl.getAccessibilityInteractionController() 7257 .performAccessibilityActionClientThread(accessibilityNodeId, action, arguments, 7258 interactionId, callback, flags, interrogatingPid, interrogatingTid); 7259 } else { 7260 // We cannot make the call and notify the caller so it does not wait. 7261 try { 7262 callback.setPerformAccessibilityActionResult(false, interactionId); 7263 } catch (RemoteException re) { 7264 /* best effort - ignore */ 7265 } 7266 } 7267 } 7268 7269 @Override 7270 public void findAccessibilityNodeInfosByViewId(long accessibilityNodeId, 7271 String viewId, Region interactiveRegion, int interactionId, 7272 IAccessibilityInteractionConnectionCallback callback, int flags, 7273 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 7274 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 7275 if (viewRootImpl != null && viewRootImpl.mView != null) { 7276 viewRootImpl.getAccessibilityInteractionController() 7277 .findAccessibilityNodeInfosByViewIdClientThread(accessibilityNodeId, 7278 viewId, interactiveRegion, interactionId, callback, flags, 7279 interrogatingPid, interrogatingTid, spec); 7280 } else { 7281 // We cannot make the call and notify the caller so it does not wait. 7282 try { 7283 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 7284 } catch (RemoteException re) { 7285 /* best effort - ignore */ 7286 } 7287 } 7288 } 7289 7290 @Override 7291 public void findAccessibilityNodeInfosByText(long accessibilityNodeId, String text, 7292 Region interactiveRegion, int interactionId, 7293 IAccessibilityInteractionConnectionCallback callback, int flags, 7294 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 7295 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 7296 if (viewRootImpl != null && viewRootImpl.mView != null) { 7297 viewRootImpl.getAccessibilityInteractionController() 7298 .findAccessibilityNodeInfosByTextClientThread(accessibilityNodeId, text, 7299 interactiveRegion, interactionId, callback, flags, interrogatingPid, 7300 interrogatingTid, spec); 7301 } else { 7302 // We cannot make the call and notify the caller so it does not wait. 7303 try { 7304 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 7305 } catch (RemoteException re) { 7306 /* best effort - ignore */ 7307 } 7308 } 7309 } 7310 7311 @Override 7312 public void findFocus(long accessibilityNodeId, int focusType, Region interactiveRegion, 7313 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 7314 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 7315 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 7316 if (viewRootImpl != null && viewRootImpl.mView != null) { 7317 viewRootImpl.getAccessibilityInteractionController() 7318 .findFocusClientThread(accessibilityNodeId, focusType, interactiveRegion, 7319 interactionId, callback, flags, interrogatingPid, interrogatingTid, 7320 spec); 7321 } else { 7322 // We cannot make the call and notify the caller so it does not wait. 7323 try { 7324 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 7325 } catch (RemoteException re) { 7326 /* best effort - ignore */ 7327 } 7328 } 7329 } 7330 7331 @Override 7332 public void focusSearch(long accessibilityNodeId, int direction, Region interactiveRegion, 7333 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 7334 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 7335 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 7336 if (viewRootImpl != null && viewRootImpl.mView != null) { 7337 viewRootImpl.getAccessibilityInteractionController() 7338 .focusSearchClientThread(accessibilityNodeId, direction, interactiveRegion, 7339 interactionId, callback, flags, interrogatingPid, interrogatingTid, 7340 spec); 7341 } else { 7342 // We cannot make the call and notify the caller so it does not wait. 7343 try { 7344 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 7345 } catch (RemoteException re) { 7346 /* best effort - ignore */ 7347 } 7348 } 7349 } 7350 } 7351 7352 private class SendWindowContentChangedAccessibilityEvent implements Runnable { 7353 private int mChangeTypes = 0; 7354 7355 public View mSource; 7356 public long mLastEventTimeMillis; 7357 7358 @Override 7359 public void run() { 7360 // The accessibility may be turned off while we were waiting so check again. 7361 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 7362 mLastEventTimeMillis = SystemClock.uptimeMillis(); 7363 AccessibilityEvent event = AccessibilityEvent.obtain(); 7364 event.setEventType(AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED); 7365 event.setContentChangeTypes(mChangeTypes); 7366 mSource.sendAccessibilityEventUnchecked(event); 7367 } else { 7368 mLastEventTimeMillis = 0; 7369 } 7370 // In any case reset to initial state. 7371 mSource.resetSubtreeAccessibilityStateChanged(); 7372 mSource = null; 7373 mChangeTypes = 0; 7374 } 7375 7376 public void runOrPost(View source, int changeType) { 7377 if (mSource != null) { 7378 // If there is no common predecessor, then mSource points to 7379 // a removed view, hence in this case always prefer the source. 7380 View predecessor = getCommonPredecessor(mSource, source); 7381 mSource = (predecessor != null) ? predecessor : source; 7382 mChangeTypes |= changeType; 7383 return; 7384 } 7385 mSource = source; 7386 mChangeTypes = changeType; 7387 final long timeSinceLastMillis = SystemClock.uptimeMillis() - mLastEventTimeMillis; 7388 final long minEventIntevalMillis = 7389 ViewConfiguration.getSendRecurringAccessibilityEventsInterval(); 7390 if (timeSinceLastMillis >= minEventIntevalMillis) { 7391 mSource.removeCallbacks(this); 7392 run(); 7393 } else { 7394 mSource.postDelayed(this, minEventIntevalMillis - timeSinceLastMillis); 7395 } 7396 } 7397 } 7398} 7399