ViewRootImpl.java revision aaa38c9f1ae019f0fe8c3ba80630f26e582cc89c
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.os.IResultReceiver; 89import com.android.internal.os.SomeArgs; 90import com.android.internal.policy.PhoneFallbackEventHandler; 91import com.android.internal.view.BaseSurfaceHolder; 92import com.android.internal.view.RootViewSurfaceTaker; 93 94import java.io.FileDescriptor; 95import java.io.IOException; 96import java.io.OutputStream; 97import java.io.PrintWriter; 98import java.lang.ref.WeakReference; 99import java.util.ArrayList; 100import java.util.HashSet; 101import java.util.concurrent.CountDownLatch; 102 103/** 104 * The top of a view hierarchy, implementing the needed protocol between View 105 * and the WindowManager. This is for the most part an internal implementation 106 * detail of {@link WindowManagerGlobal}. 107 * 108 * {@hide} 109 */ 110@SuppressWarnings({"EmptyCatchBlock", "PointlessBooleanExpression"}) 111public final class ViewRootImpl implements ViewParent, 112 View.AttachInfo.Callbacks, ThreadedRenderer.HardwareDrawCallbacks { 113 private static final String TAG = "ViewRootImpl"; 114 private static final boolean DBG = false; 115 private static final boolean LOCAL_LOGV = false; 116 /** @noinspection PointlessBooleanExpression*/ 117 private static final boolean DEBUG_DRAW = false || LOCAL_LOGV; 118 private static final boolean DEBUG_LAYOUT = false || LOCAL_LOGV; 119 private static final boolean DEBUG_DIALOG = false || LOCAL_LOGV; 120 private static final boolean DEBUG_INPUT_RESIZE = false || LOCAL_LOGV; 121 private static final boolean DEBUG_ORIENTATION = false || LOCAL_LOGV; 122 private static final boolean DEBUG_TRACKBALL = false || LOCAL_LOGV; 123 private static final boolean DEBUG_IMF = false || LOCAL_LOGV; 124 private static final boolean DEBUG_CONFIGURATION = false || LOCAL_LOGV; 125 private static final boolean DEBUG_FPS = false; 126 private static final boolean DEBUG_INPUT_STAGES = false || LOCAL_LOGV; 127 128 /** 129 * Set to false if we do not want to use the multi threaded renderer. Note that by disabling 130 * this, WindowCallbacks will not fire. 131 */ 132 private static final boolean USE_MT_RENDERER = true; 133 134 /** 135 * Set this system property to true to force the view hierarchy to render 136 * at 60 Hz. This can be used to measure the potential framerate. 137 */ 138 private static final String PROPERTY_PROFILE_RENDERING = "viewroot.profile_rendering"; 139 140 // properties used by emulator to determine display shape 141 public static final String PROPERTY_EMULATOR_WIN_OUTSET_BOTTOM_PX = 142 "ro.emu.win_outset_bottom_px"; 143 144 /** 145 * Maximum time we allow the user to roll the trackball enough to generate 146 * a key event, before resetting the counters. 147 */ 148 static final int MAX_TRACKBALL_DELAY = 250; 149 150 static final ThreadLocal<HandlerActionQueue> sRunQueues = new ThreadLocal<HandlerActionQueue>(); 151 152 static final ArrayList<Runnable> sFirstDrawHandlers = new ArrayList(); 153 static boolean sFirstDrawComplete = false; 154 155 static final ArrayList<ComponentCallbacks> sConfigCallbacks = new ArrayList(); 156 157 final ArrayList<WindowCallbacks> mWindowCallbacks = new ArrayList(); 158 final Context mContext; 159 final IWindowSession mWindowSession; 160 final Display mDisplay; 161 final DisplayManager mDisplayManager; 162 final String mBasePackageName; 163 164 final int[] mTmpLocation = new int[2]; 165 166 final TypedValue mTmpValue = new TypedValue(); 167 168 final Thread mThread; 169 170 final WindowLeaked mLocation; 171 172 final WindowManager.LayoutParams mWindowAttributes = new WindowManager.LayoutParams(); 173 174 final W mWindow; 175 176 final int mTargetSdkVersion; 177 178 int mSeq; 179 180 View mView; 181 182 View mAccessibilityFocusedHost; 183 AccessibilityNodeInfo mAccessibilityFocusedVirtualView; 184 185 // The view which captures mouse input, or null when no one is capturing. 186 View mCapturingView; 187 188 int mViewVisibility; 189 boolean mAppVisible = true; 190 // For recents to freeform transition we need to keep drawing after the app receives information 191 // that it became invisible. This will ignore that information and depend on the decor view 192 // visibility to control drawing. The decor view visibility will get adjusted when the app get 193 // stopped and that's when the app will stop drawing further frames. 194 private boolean mForceDecorViewVisibility = false; 195 int mOrigWindowType = -1; 196 197 /** Whether the window had focus during the most recent traversal. */ 198 boolean mHadWindowFocus; 199 200 /** 201 * Whether the window lost focus during a previous traversal and has not 202 * yet gained it back. Used to determine whether a WINDOW_STATE_CHANGE 203 * accessibility events should be sent during traversal. 204 */ 205 boolean mLostWindowFocus; 206 207 // Set to true if the owner of this window is in the stopped state, 208 // so the window should no longer be active. 209 boolean mStopped = false; 210 211 // Set to true if the owner of this window is in ambient mode, 212 // which means it won't receive input events. 213 boolean mIsAmbientMode = false; 214 215 // Set to true to stop input during an Activity Transition. 216 boolean mPausedForTransition = false; 217 218 boolean mLastInCompatMode = false; 219 220 SurfaceHolder.Callback2 mSurfaceHolderCallback; 221 BaseSurfaceHolder mSurfaceHolder; 222 boolean mIsCreating; 223 boolean mDrawingAllowed; 224 225 final Region mTransparentRegion; 226 final Region mPreviousTransparentRegion; 227 228 int mWidth; 229 int mHeight; 230 Rect mDirty; 231 boolean mIsAnimating; 232 233 private boolean mDragResizing; 234 private boolean mInvalidateRootRequested; 235 private int mResizeMode; 236 private int mCanvasOffsetX; 237 private int mCanvasOffsetY; 238 private boolean mActivityRelaunched; 239 240 CompatibilityInfo.Translator mTranslator; 241 242 final View.AttachInfo mAttachInfo; 243 InputChannel mInputChannel; 244 InputQueue.Callback mInputQueueCallback; 245 InputQueue mInputQueue; 246 FallbackEventHandler mFallbackEventHandler; 247 Choreographer mChoreographer; 248 249 final Rect mTempRect; // used in the transaction to not thrash the heap. 250 final Rect mVisRect; // used to retrieve visible rect of focused view. 251 252 boolean mTraversalScheduled; 253 int mTraversalBarrier; 254 boolean mWillDrawSoon; 255 /** Set to true while in performTraversals for detecting when die(true) is called from internal 256 * callbacks such as onMeasure, onPreDraw, onDraw and deferring doDie() until later. */ 257 boolean mIsInTraversal; 258 boolean mApplyInsetsRequested; 259 boolean mLayoutRequested; 260 boolean mFirst; 261 boolean mReportNextDraw; 262 boolean mFullRedrawNeeded; 263 boolean mNewSurfaceNeeded; 264 boolean mHasHadWindowFocus; 265 boolean mLastWasImTarget; 266 boolean mForceNextWindowRelayout; 267 CountDownLatch mWindowDrawCountDown; 268 269 boolean mIsDrawing; 270 int mLastSystemUiVisibility; 271 int mClientWindowLayoutFlags; 272 boolean mLastOverscanRequested; 273 274 // Pool of queued input events. 275 private static final int MAX_QUEUED_INPUT_EVENT_POOL_SIZE = 10; 276 private QueuedInputEvent mQueuedInputEventPool; 277 private int mQueuedInputEventPoolSize; 278 279 /* Input event queue. 280 * Pending input events are input events waiting to be delivered to the input stages 281 * and handled by the application. 282 */ 283 QueuedInputEvent mPendingInputEventHead; 284 QueuedInputEvent mPendingInputEventTail; 285 int mPendingInputEventCount; 286 boolean mProcessInputEventsScheduled; 287 boolean mUnbufferedInputDispatch; 288 String mPendingInputEventQueueLengthCounterName = "pq"; 289 290 InputStage mFirstInputStage; 291 InputStage mFirstPostImeInputStage; 292 InputStage mSyntheticInputStage; 293 294 boolean mWindowAttributesChanged = false; 295 int mWindowAttributesChangesFlag = 0; 296 297 // These can be accessed by any thread, must be protected with a lock. 298 // Surface can never be reassigned or cleared (use Surface.clear()). 299 final Surface mSurface = new Surface(); 300 301 boolean mAdded; 302 boolean mAddedTouchMode; 303 304 final DisplayAdjustments mDisplayAdjustments; 305 306 // These are accessed by multiple threads. 307 final Rect mWinFrame; // frame given by window manager. 308 309 final Rect mPendingOverscanInsets = new Rect(); 310 final Rect mPendingVisibleInsets = new Rect(); 311 final Rect mPendingStableInsets = new Rect(); 312 final Rect mPendingContentInsets = new Rect(); 313 final Rect mPendingOutsets = new Rect(); 314 final Rect mPendingBackDropFrame = new Rect(); 315 boolean mPendingAlwaysConsumeNavBar; 316 final ViewTreeObserver.InternalInsetsInfo mLastGivenInsets 317 = new ViewTreeObserver.InternalInsetsInfo(); 318 319 final Rect mDispatchContentInsets = new Rect(); 320 final Rect mDispatchStableInsets = new Rect(); 321 322 private WindowInsets mLastWindowInsets; 323 324 final Configuration mLastConfiguration = new Configuration(); 325 final Configuration mPendingConfiguration = new Configuration(); 326 327 boolean mScrollMayChange; 328 int mSoftInputMode; 329 WeakReference<View> mLastScrolledFocus; 330 int mScrollY; 331 int mCurScrollY; 332 Scroller mScroller; 333 static final Interpolator mResizeInterpolator = new AccelerateDecelerateInterpolator(); 334 private ArrayList<LayoutTransition> mPendingTransitions; 335 336 final ViewConfiguration mViewConfiguration; 337 338 /* Drag/drop */ 339 ClipDescription mDragDescription; 340 View mCurrentDragView; 341 volatile Object mLocalDragState; 342 final PointF mDragPoint = new PointF(); 343 final PointF mLastTouchPoint = new PointF(); 344 int mLastTouchSource; 345 346 private boolean mProfileRendering; 347 private Choreographer.FrameCallback mRenderProfiler; 348 private boolean mRenderProfilingEnabled; 349 350 // Variables to track frames per second, enabled via DEBUG_FPS flag 351 private long mFpsStartTime = -1; 352 private long mFpsPrevTime = -1; 353 private int mFpsNumFrames; 354 355 private int mPointerIconShape = PointerIcon.STYLE_NOT_SPECIFIED; 356 private PointerIcon mCustomPointerIcon = null; 357 358 /** 359 * see {@link #playSoundEffect(int)} 360 */ 361 AudioManager mAudioManager; 362 363 final AccessibilityManager mAccessibilityManager; 364 365 AccessibilityInteractionController mAccessibilityInteractionController; 366 367 AccessibilityInteractionConnectionManager mAccessibilityInteractionConnectionManager; 368 HighContrastTextManager mHighContrastTextManager; 369 370 SendWindowContentChangedAccessibilityEvent mSendWindowContentChangedAccessibilityEvent; 371 372 HashSet<View> mTempHashSet; 373 374 private final int mDensity; 375 private final int mNoncompatDensity; 376 377 private boolean mInLayout = false; 378 ArrayList<View> mLayoutRequesters = new ArrayList<View>(); 379 boolean mHandlingLayoutInLayoutRequest = false; 380 381 private int mViewLayoutDirectionInitial; 382 383 /** Set to true once doDie() has been called. */ 384 private boolean mRemoved; 385 386 /** 387 * Consistency verifier for debugging purposes. 388 */ 389 protected final InputEventConsistencyVerifier mInputEventConsistencyVerifier = 390 InputEventConsistencyVerifier.isInstrumentationEnabled() ? 391 new InputEventConsistencyVerifier(this, 0) : null; 392 393 static final class SystemUiVisibilityInfo { 394 int seq; 395 int globalVisibility; 396 int localValue; 397 int localChanges; 398 } 399 400 private String mTag = TAG; 401 402 public ViewRootImpl(Context context, Display display) { 403 mContext = context; 404 mWindowSession = WindowManagerGlobal.getWindowSession(); 405 mDisplay = display; 406 mBasePackageName = context.getBasePackageName(); 407 408 mDisplayAdjustments = display.getDisplayAdjustments(); 409 410 mThread = Thread.currentThread(); 411 mLocation = new WindowLeaked(null); 412 mLocation.fillInStackTrace(); 413 mWidth = -1; 414 mHeight = -1; 415 mDirty = new Rect(); 416 mTempRect = new Rect(); 417 mVisRect = new Rect(); 418 mWinFrame = new Rect(); 419 mWindow = new W(this); 420 mTargetSdkVersion = context.getApplicationInfo().targetSdkVersion; 421 mViewVisibility = View.GONE; 422 mTransparentRegion = new Region(); 423 mPreviousTransparentRegion = new Region(); 424 mFirst = true; // true for the first time the view is added 425 mAdded = false; 426 mAttachInfo = new View.AttachInfo(mWindowSession, mWindow, display, this, mHandler, this); 427 mAccessibilityManager = AccessibilityManager.getInstance(context); 428 mAccessibilityInteractionConnectionManager = 429 new AccessibilityInteractionConnectionManager(); 430 mAccessibilityManager.addAccessibilityStateChangeListener( 431 mAccessibilityInteractionConnectionManager); 432 mHighContrastTextManager = new HighContrastTextManager(); 433 mAccessibilityManager.addHighTextContrastStateChangeListener( 434 mHighContrastTextManager); 435 mViewConfiguration = ViewConfiguration.get(context); 436 mDensity = context.getResources().getDisplayMetrics().densityDpi; 437 mNoncompatDensity = context.getResources().getDisplayMetrics().noncompatDensityDpi; 438 mFallbackEventHandler = new PhoneFallbackEventHandler(context); 439 mChoreographer = Choreographer.getInstance(); 440 mDisplayManager = (DisplayManager)context.getSystemService(Context.DISPLAY_SERVICE); 441 loadSystemProperties(); 442 } 443 444 public static void addFirstDrawHandler(Runnable callback) { 445 synchronized (sFirstDrawHandlers) { 446 if (!sFirstDrawComplete) { 447 sFirstDrawHandlers.add(callback); 448 } 449 } 450 } 451 452 public static void addConfigCallback(ComponentCallbacks callback) { 453 synchronized (sConfigCallbacks) { 454 sConfigCallbacks.add(callback); 455 } 456 } 457 458 public void addWindowCallbacks(WindowCallbacks callback) { 459 if (USE_MT_RENDERER) { 460 synchronized (mWindowCallbacks) { 461 mWindowCallbacks.add(callback); 462 } 463 } 464 } 465 466 public void removeWindowCallbacks(WindowCallbacks callback) { 467 if (USE_MT_RENDERER) { 468 synchronized (mWindowCallbacks) { 469 mWindowCallbacks.remove(callback); 470 } 471 } 472 } 473 474 public void reportDrawFinish() { 475 if (mWindowDrawCountDown != null) { 476 mWindowDrawCountDown.countDown(); 477 } 478 } 479 480 // FIXME for perf testing only 481 private boolean mProfile = false; 482 483 /** 484 * Call this to profile the next traversal call. 485 * FIXME for perf testing only. Remove eventually 486 */ 487 public void profile() { 488 mProfile = true; 489 } 490 491 /** 492 * Indicates whether we are in touch mode. Calling this method triggers an IPC 493 * call and should be avoided whenever possible. 494 * 495 * @return True, if the device is in touch mode, false otherwise. 496 * 497 * @hide 498 */ 499 static boolean isInTouchMode() { 500 IWindowSession windowSession = WindowManagerGlobal.peekWindowSession(); 501 if (windowSession != null) { 502 try { 503 return windowSession.getInTouchMode(); 504 } catch (RemoteException e) { 505 } 506 } 507 return false; 508 } 509 510 /** 511 * We have one child 512 */ 513 public void setView(View view, WindowManager.LayoutParams attrs, View panelParentView) { 514 synchronized (this) { 515 if (mView == null) { 516 mView = view; 517 518 mAttachInfo.mDisplayState = mDisplay.getState(); 519 mDisplayManager.registerDisplayListener(mDisplayListener, mHandler); 520 521 mViewLayoutDirectionInitial = mView.getRawLayoutDirection(); 522 mFallbackEventHandler.setView(view); 523 mWindowAttributes.copyFrom(attrs); 524 if (mWindowAttributes.packageName == null) { 525 mWindowAttributes.packageName = mBasePackageName; 526 } 527 attrs = mWindowAttributes; 528 setTag(); 529 // Keep track of the actual window flags supplied by the client. 530 mClientWindowLayoutFlags = attrs.flags; 531 532 setAccessibilityFocus(null, null); 533 534 if (view instanceof RootViewSurfaceTaker) { 535 mSurfaceHolderCallback = 536 ((RootViewSurfaceTaker)view).willYouTakeTheSurface(); 537 if (mSurfaceHolderCallback != null) { 538 mSurfaceHolder = new TakenSurfaceHolder(); 539 mSurfaceHolder.setFormat(PixelFormat.UNKNOWN); 540 } 541 } 542 543 // Compute surface insets required to draw at specified Z value. 544 // TODO: Use real shadow insets for a constant max Z. 545 if (!attrs.hasManualSurfaceInsets) { 546 final int surfaceInset = (int) Math.ceil(view.getZ() * 2); 547 attrs.surfaceInsets.set(surfaceInset, surfaceInset, surfaceInset, surfaceInset); 548 } 549 550 CompatibilityInfo compatibilityInfo = mDisplayAdjustments.getCompatibilityInfo(); 551 mTranslator = compatibilityInfo.getTranslator(); 552 553 // If the application owns the surface, don't enable hardware acceleration 554 if (mSurfaceHolder == null) { 555 enableHardwareAcceleration(attrs); 556 } 557 558 boolean restore = false; 559 if (mTranslator != null) { 560 mSurface.setCompatibilityTranslator(mTranslator); 561 restore = true; 562 attrs.backup(); 563 mTranslator.translateWindowLayout(attrs); 564 } 565 if (DEBUG_LAYOUT) Log.d(mTag, "WindowLayout in setView:" + attrs); 566 567 if (!compatibilityInfo.supportsScreen()) { 568 attrs.privateFlags |= WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 569 mLastInCompatMode = true; 570 } 571 572 mSoftInputMode = attrs.softInputMode; 573 mWindowAttributesChanged = true; 574 mWindowAttributesChangesFlag = WindowManager.LayoutParams.EVERYTHING_CHANGED; 575 mAttachInfo.mRootView = view; 576 mAttachInfo.mScalingRequired = mTranslator != null; 577 mAttachInfo.mApplicationScale = 578 mTranslator == null ? 1.0f : mTranslator.applicationScale; 579 if (panelParentView != null) { 580 mAttachInfo.mPanelParentWindowToken 581 = panelParentView.getApplicationWindowToken(); 582 } 583 mAdded = true; 584 int res; /* = WindowManagerImpl.ADD_OKAY; */ 585 586 // Schedule the first layout -before- adding to the window 587 // manager, to make sure we do the relayout before receiving 588 // any other events from the system. 589 requestLayout(); 590 if ((mWindowAttributes.inputFeatures 591 & WindowManager.LayoutParams.INPUT_FEATURE_NO_INPUT_CHANNEL) == 0) { 592 mInputChannel = new InputChannel(); 593 } 594 mForceDecorViewVisibility = (mWindowAttributes.privateFlags 595 & PRIVATE_FLAG_FORCE_DECOR_VIEW_VISIBILITY) != 0; 596 try { 597 mOrigWindowType = mWindowAttributes.type; 598 mAttachInfo.mRecomputeGlobalAttributes = true; 599 collectViewAttributes(); 600 res = mWindowSession.addToDisplay(mWindow, mSeq, mWindowAttributes, 601 getHostVisibility(), mDisplay.getDisplayId(), 602 mAttachInfo.mContentInsets, mAttachInfo.mStableInsets, 603 mAttachInfo.mOutsets, mInputChannel); 604 } catch (RemoteException e) { 605 mAdded = false; 606 mView = null; 607 mAttachInfo.mRootView = null; 608 mInputChannel = null; 609 mFallbackEventHandler.setView(null); 610 unscheduleTraversals(); 611 setAccessibilityFocus(null, null); 612 throw new RuntimeException("Adding window failed", e); 613 } finally { 614 if (restore) { 615 attrs.restore(); 616 } 617 } 618 619 if (mTranslator != null) { 620 mTranslator.translateRectInScreenToAppWindow(mAttachInfo.mContentInsets); 621 } 622 mPendingOverscanInsets.set(0, 0, 0, 0); 623 mPendingContentInsets.set(mAttachInfo.mContentInsets); 624 mPendingStableInsets.set(mAttachInfo.mStableInsets); 625 mPendingVisibleInsets.set(0, 0, 0, 0); 626 mAttachInfo.mAlwaysConsumeNavBar = 627 (res & WindowManagerGlobal.ADD_FLAG_ALWAYS_CONSUME_NAV_BAR) != 0; 628 mPendingAlwaysConsumeNavBar = mAttachInfo.mAlwaysConsumeNavBar; 629 if (DEBUG_LAYOUT) Log.v(mTag, "Added window " + mWindow); 630 if (res < WindowManagerGlobal.ADD_OKAY) { 631 mAttachInfo.mRootView = null; 632 mAdded = false; 633 mFallbackEventHandler.setView(null); 634 unscheduleTraversals(); 635 setAccessibilityFocus(null, null); 636 switch (res) { 637 case WindowManagerGlobal.ADD_BAD_APP_TOKEN: 638 case WindowManagerGlobal.ADD_BAD_SUBWINDOW_TOKEN: 639 throw new WindowManager.BadTokenException( 640 "Unable to add window -- token " + attrs.token 641 + " is not valid; is your activity running?"); 642 case WindowManagerGlobal.ADD_NOT_APP_TOKEN: 643 throw new WindowManager.BadTokenException( 644 "Unable to add window -- token " + attrs.token 645 + " is not for an application"); 646 case WindowManagerGlobal.ADD_APP_EXITING: 647 throw new WindowManager.BadTokenException( 648 "Unable to add window -- app for token " + attrs.token 649 + " is exiting"); 650 case WindowManagerGlobal.ADD_DUPLICATE_ADD: 651 throw new WindowManager.BadTokenException( 652 "Unable to add window -- window " + mWindow 653 + " has already been added"); 654 case WindowManagerGlobal.ADD_STARTING_NOT_NEEDED: 655 // Silently ignore -- we would have just removed it 656 // right away, anyway. 657 return; 658 case WindowManagerGlobal.ADD_MULTIPLE_SINGLETON: 659 throw new WindowManager.BadTokenException("Unable to add window " 660 + mWindow + " -- another window of type " 661 + mWindowAttributes.type + " already exists"); 662 case WindowManagerGlobal.ADD_PERMISSION_DENIED: 663 throw new WindowManager.BadTokenException("Unable to add window " 664 + mWindow + " -- permission denied for window type " 665 + mWindowAttributes.type); 666 case WindowManagerGlobal.ADD_INVALID_DISPLAY: 667 throw new WindowManager.InvalidDisplayException("Unable to add window " 668 + mWindow + " -- the specified display can not be found"); 669 case WindowManagerGlobal.ADD_INVALID_TYPE: 670 throw new WindowManager.InvalidDisplayException("Unable to add window " 671 + mWindow + " -- the specified window type " 672 + mWindowAttributes.type + " is not valid"); 673 } 674 throw new RuntimeException( 675 "Unable to add window -- unknown error code " + res); 676 } 677 678 if (view instanceof RootViewSurfaceTaker) { 679 mInputQueueCallback = 680 ((RootViewSurfaceTaker)view).willYouTakeTheInputQueue(); 681 } 682 if (mInputChannel != null) { 683 if (mInputQueueCallback != null) { 684 mInputQueue = new InputQueue(); 685 mInputQueueCallback.onInputQueueCreated(mInputQueue); 686 } 687 mInputEventReceiver = new WindowInputEventReceiver(mInputChannel, 688 Looper.myLooper()); 689 } 690 691 view.assignParent(this); 692 mAddedTouchMode = (res & WindowManagerGlobal.ADD_FLAG_IN_TOUCH_MODE) != 0; 693 mAppVisible = (res & WindowManagerGlobal.ADD_FLAG_APP_VISIBLE) != 0; 694 695 if (mAccessibilityManager.isEnabled()) { 696 mAccessibilityInteractionConnectionManager.ensureConnection(); 697 } 698 699 if (view.getImportantForAccessibility() == View.IMPORTANT_FOR_ACCESSIBILITY_AUTO) { 700 view.setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_YES); 701 } 702 703 // Set up the input pipeline. 704 CharSequence counterSuffix = attrs.getTitle(); 705 mSyntheticInputStage = new SyntheticInputStage(); 706 InputStage viewPostImeStage = new ViewPostImeInputStage(mSyntheticInputStage); 707 InputStage nativePostImeStage = new NativePostImeInputStage(viewPostImeStage, 708 "aq:native-post-ime:" + counterSuffix); 709 InputStage earlyPostImeStage = new EarlyPostImeInputStage(nativePostImeStage); 710 InputStage imeStage = new ImeInputStage(earlyPostImeStage, 711 "aq:ime:" + counterSuffix); 712 InputStage viewPreImeStage = new ViewPreImeInputStage(imeStage); 713 InputStage nativePreImeStage = new NativePreImeInputStage(viewPreImeStage, 714 "aq:native-pre-ime:" + counterSuffix); 715 716 mFirstInputStage = nativePreImeStage; 717 mFirstPostImeInputStage = earlyPostImeStage; 718 mPendingInputEventQueueLengthCounterName = "aq:pending:" + counterSuffix; 719 } 720 } 721 } 722 723 private void setTag() { 724 final String[] split = mWindowAttributes.getTitle().toString().split("\\."); 725 if (split.length > 0) { 726 mTag = TAG + "[" + split[split.length - 1] + "]"; 727 } 728 } 729 730 /** Whether the window is in local focus mode or not */ 731 private boolean isInLocalFocusMode() { 732 return (mWindowAttributes.flags & WindowManager.LayoutParams.FLAG_LOCAL_FOCUS_MODE) != 0; 733 } 734 735 public int getWindowFlags() { 736 return mWindowAttributes.flags; 737 } 738 739 public int getDisplayId() { 740 return mDisplay.getDisplayId(); 741 } 742 743 public CharSequence getTitle() { 744 return mWindowAttributes.getTitle(); 745 } 746 747 void destroyHardwareResources() { 748 if (mAttachInfo.mHardwareRenderer != null) { 749 mAttachInfo.mHardwareRenderer.destroyHardwareResources(mView); 750 mAttachInfo.mHardwareRenderer.destroy(); 751 } 752 } 753 754 public void detachFunctor(long functor) { 755 if (mAttachInfo.mHardwareRenderer != null) { 756 // Fence so that any pending invokeFunctor() messages will be processed 757 // before we return from detachFunctor. 758 mAttachInfo.mHardwareRenderer.stopDrawing(); 759 } 760 } 761 762 /** 763 * Schedules the functor for execution in either kModeProcess or 764 * kModeProcessNoContext, depending on whether or not there is an EGLContext. 765 * 766 * @param functor The native functor to invoke 767 * @param waitForCompletion If true, this will not return until the functor 768 * has invoked. If false, the functor may be invoked 769 * asynchronously. 770 */ 771 public void invokeFunctor(long functor, boolean waitForCompletion) { 772 ThreadedRenderer.invokeFunctor(functor, waitForCompletion); 773 } 774 775 public void registerAnimatingRenderNode(RenderNode animator) { 776 if (mAttachInfo.mHardwareRenderer != null) { 777 mAttachInfo.mHardwareRenderer.registerAnimatingRenderNode(animator); 778 } else { 779 if (mAttachInfo.mPendingAnimatingRenderNodes == null) { 780 mAttachInfo.mPendingAnimatingRenderNodes = new ArrayList<RenderNode>(); 781 } 782 mAttachInfo.mPendingAnimatingRenderNodes.add(animator); 783 } 784 } 785 786 private void enableHardwareAcceleration(WindowManager.LayoutParams attrs) { 787 mAttachInfo.mHardwareAccelerated = false; 788 mAttachInfo.mHardwareAccelerationRequested = false; 789 790 // Don't enable hardware acceleration when the application is in compatibility mode 791 if (mTranslator != null) return; 792 793 // Try to enable hardware acceleration if requested 794 final boolean hardwareAccelerated = 795 (attrs.flags & WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED) != 0; 796 797 if (hardwareAccelerated) { 798 if (!ThreadedRenderer.isAvailable()) { 799 return; 800 } 801 802 // Persistent processes (including the system) should not do 803 // accelerated rendering on low-end devices. In that case, 804 // sRendererDisabled will be set. In addition, the system process 805 // itself should never do accelerated rendering. In that case, both 806 // sRendererDisabled and sSystemRendererDisabled are set. When 807 // sSystemRendererDisabled is set, PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED 808 // can be used by code on the system process to escape that and enable 809 // HW accelerated drawing. (This is basically for the lock screen.) 810 811 final boolean fakeHwAccelerated = (attrs.privateFlags & 812 WindowManager.LayoutParams.PRIVATE_FLAG_FAKE_HARDWARE_ACCELERATED) != 0; 813 final boolean forceHwAccelerated = (attrs.privateFlags & 814 WindowManager.LayoutParams.PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED) != 0; 815 816 if (fakeHwAccelerated) { 817 // This is exclusively for the preview windows the window manager 818 // shows for launching applications, so they will look more like 819 // the app being launched. 820 mAttachInfo.mHardwareAccelerationRequested = true; 821 } else if (!ThreadedRenderer.sRendererDisabled 822 || (ThreadedRenderer.sSystemRendererDisabled && forceHwAccelerated)) { 823 if (mAttachInfo.mHardwareRenderer != null) { 824 mAttachInfo.mHardwareRenderer.destroy(); 825 } 826 827 final Rect insets = attrs.surfaceInsets; 828 final boolean hasSurfaceInsets = insets.left != 0 || insets.right != 0 829 || insets.top != 0 || insets.bottom != 0; 830 final boolean translucent = attrs.format != PixelFormat.OPAQUE || hasSurfaceInsets; 831 mAttachInfo.mHardwareRenderer = ThreadedRenderer.create(mContext, translucent); 832 if (mAttachInfo.mHardwareRenderer != null) { 833 mAttachInfo.mHardwareRenderer.setName(attrs.getTitle().toString()); 834 mAttachInfo.mHardwareAccelerated = 835 mAttachInfo.mHardwareAccelerationRequested = true; 836 } 837 } 838 } 839 } 840 841 public View getView() { 842 return mView; 843 } 844 845 final WindowLeaked getLocation() { 846 return mLocation; 847 } 848 849 void setLayoutParams(WindowManager.LayoutParams attrs, boolean newView) { 850 synchronized (this) { 851 final int oldInsetLeft = mWindowAttributes.surfaceInsets.left; 852 final int oldInsetTop = mWindowAttributes.surfaceInsets.top; 853 final int oldInsetRight = mWindowAttributes.surfaceInsets.right; 854 final int oldInsetBottom = mWindowAttributes.surfaceInsets.bottom; 855 final int oldSoftInputMode = mWindowAttributes.softInputMode; 856 final boolean oldHasManualSurfaceInsets = mWindowAttributes.hasManualSurfaceInsets; 857 858 // Keep track of the actual window flags supplied by the client. 859 mClientWindowLayoutFlags = attrs.flags; 860 861 // Preserve compatible window flag if exists. 862 final int compatibleWindowFlag = mWindowAttributes.privateFlags 863 & WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 864 865 // Transfer over system UI visibility values as they carry current state. 866 attrs.systemUiVisibility = mWindowAttributes.systemUiVisibility; 867 attrs.subtreeSystemUiVisibility = mWindowAttributes.subtreeSystemUiVisibility; 868 869 mWindowAttributesChangesFlag = mWindowAttributes.copyFrom(attrs); 870 if ((mWindowAttributesChangesFlag 871 & WindowManager.LayoutParams.TRANSLUCENT_FLAGS_CHANGED) != 0) { 872 // Recompute system ui visibility. 873 mAttachInfo.mRecomputeGlobalAttributes = true; 874 } 875 if (mWindowAttributes.packageName == null) { 876 mWindowAttributes.packageName = mBasePackageName; 877 } 878 mWindowAttributes.privateFlags |= compatibleWindowFlag; 879 880 // Restore old surface insets. 881 mWindowAttributes.surfaceInsets.set( 882 oldInsetLeft, oldInsetTop, oldInsetRight, oldInsetBottom); 883 mWindowAttributes.hasManualSurfaceInsets = oldHasManualSurfaceInsets; 884 885 applyKeepScreenOnFlag(mWindowAttributes); 886 887 if (newView) { 888 mSoftInputMode = attrs.softInputMode; 889 requestLayout(); 890 } 891 892 // Don't lose the mode we last auto-computed. 893 if ((attrs.softInputMode & WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 894 == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 895 mWindowAttributes.softInputMode = (mWindowAttributes.softInputMode 896 & ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 897 | (oldSoftInputMode & WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST); 898 } 899 900 mWindowAttributesChanged = true; 901 scheduleTraversals(); 902 } 903 } 904 905 void handleAppVisibility(boolean visible) { 906 if (mAppVisible != visible) { 907 mAppVisible = visible; 908 scheduleTraversals(); 909 if (!mAppVisible) { 910 WindowManagerGlobal.trimForeground(); 911 } 912 } 913 } 914 915 void handleGetNewSurface() { 916 mNewSurfaceNeeded = true; 917 mFullRedrawNeeded = true; 918 scheduleTraversals(); 919 } 920 921 private final DisplayListener mDisplayListener = new DisplayListener() { 922 @Override 923 public void onDisplayChanged(int displayId) { 924 if (mView != null && mDisplay.getDisplayId() == displayId) { 925 final int oldDisplayState = mAttachInfo.mDisplayState; 926 final int newDisplayState = mDisplay.getState(); 927 if (oldDisplayState != newDisplayState) { 928 mAttachInfo.mDisplayState = newDisplayState; 929 pokeDrawLockIfNeeded(); 930 if (oldDisplayState != Display.STATE_UNKNOWN) { 931 final int oldScreenState = toViewScreenState(oldDisplayState); 932 final int newScreenState = toViewScreenState(newDisplayState); 933 if (oldScreenState != newScreenState) { 934 mView.dispatchScreenStateChanged(newScreenState); 935 } 936 if (oldDisplayState == Display.STATE_OFF) { 937 // Draw was suppressed so we need to for it to happen here. 938 mFullRedrawNeeded = true; 939 scheduleTraversals(); 940 } 941 } 942 } 943 } 944 } 945 946 @Override 947 public void onDisplayRemoved(int displayId) { 948 } 949 950 @Override 951 public void onDisplayAdded(int displayId) { 952 } 953 954 private int toViewScreenState(int displayState) { 955 return displayState == Display.STATE_OFF ? 956 View.SCREEN_STATE_OFF : View.SCREEN_STATE_ON; 957 } 958 }; 959 960 void pokeDrawLockIfNeeded() { 961 final int displayState = mAttachInfo.mDisplayState; 962 if (mView != null && mAdded && mTraversalScheduled 963 && (displayState == Display.STATE_DOZE 964 || displayState == Display.STATE_DOZE_SUSPEND)) { 965 try { 966 mWindowSession.pokeDrawLock(mWindow); 967 } catch (RemoteException ex) { 968 // System server died, oh well. 969 } 970 } 971 } 972 973 @Override 974 public void requestFitSystemWindows() { 975 checkThread(); 976 mApplyInsetsRequested = true; 977 scheduleTraversals(); 978 } 979 980 @Override 981 public void requestLayout() { 982 if (!mHandlingLayoutInLayoutRequest) { 983 checkThread(); 984 mLayoutRequested = true; 985 scheduleTraversals(); 986 } 987 } 988 989 @Override 990 public boolean isLayoutRequested() { 991 return mLayoutRequested; 992 } 993 994 void invalidate() { 995 mDirty.set(0, 0, mWidth, mHeight); 996 if (!mWillDrawSoon) { 997 scheduleTraversals(); 998 } 999 } 1000 1001 void invalidateWorld(View view) { 1002 view.invalidate(); 1003 if (view instanceof ViewGroup) { 1004 ViewGroup parent = (ViewGroup) view; 1005 for (int i = 0; i < parent.getChildCount(); i++) { 1006 invalidateWorld(parent.getChildAt(i)); 1007 } 1008 } 1009 } 1010 1011 @Override 1012 public void invalidateChild(View child, Rect dirty) { 1013 invalidateChildInParent(null, dirty); 1014 } 1015 1016 @Override 1017 public ViewParent invalidateChildInParent(int[] location, Rect dirty) { 1018 checkThread(); 1019 if (DEBUG_DRAW) Log.v(mTag, "Invalidate child: " + dirty); 1020 1021 if (dirty == null) { 1022 invalidate(); 1023 return null; 1024 } else if (dirty.isEmpty() && !mIsAnimating) { 1025 return null; 1026 } 1027 1028 if (mCurScrollY != 0 || mTranslator != null) { 1029 mTempRect.set(dirty); 1030 dirty = mTempRect; 1031 if (mCurScrollY != 0) { 1032 dirty.offset(0, -mCurScrollY); 1033 } 1034 if (mTranslator != null) { 1035 mTranslator.translateRectInAppWindowToScreen(dirty); 1036 } 1037 if (mAttachInfo.mScalingRequired) { 1038 dirty.inset(-1, -1); 1039 } 1040 } 1041 1042 invalidateRectOnScreen(dirty); 1043 1044 return null; 1045 } 1046 1047 private void invalidateRectOnScreen(Rect dirty) { 1048 final Rect localDirty = mDirty; 1049 if (!localDirty.isEmpty() && !localDirty.contains(dirty)) { 1050 mAttachInfo.mSetIgnoreDirtyState = true; 1051 mAttachInfo.mIgnoreDirtyState = true; 1052 } 1053 1054 // Add the new dirty rect to the current one 1055 localDirty.union(dirty.left, dirty.top, dirty.right, dirty.bottom); 1056 // Intersect with the bounds of the window to skip 1057 // updates that lie outside of the visible region 1058 final float appScale = mAttachInfo.mApplicationScale; 1059 final boolean intersected = localDirty.intersect(0, 0, 1060 (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 1061 if (!intersected) { 1062 localDirty.setEmpty(); 1063 } 1064 if (!mWillDrawSoon && (intersected || mIsAnimating)) { 1065 scheduleTraversals(); 1066 } 1067 } 1068 1069 public void setIsAmbientMode(boolean ambient) { 1070 mIsAmbientMode = ambient; 1071 } 1072 1073 void setWindowStopped(boolean stopped) { 1074 if (mStopped != stopped) { 1075 mStopped = stopped; 1076 if (!mStopped) { 1077 scheduleTraversals(); 1078 } else { 1079 if (mAttachInfo.mHardwareRenderer != null) { 1080 if (DEBUG_DRAW) Log.d(mTag, "WindowStopped on " + getTitle()); 1081 mAttachInfo.mHardwareRenderer.updateSurface(null); 1082 mAttachInfo.mHardwareRenderer.destroyHardwareResources(mView); 1083 } 1084 } 1085 } 1086 } 1087 1088 /** 1089 * Block the input events during an Activity Transition. The KEYCODE_BACK event is allowed 1090 * through to allow quick reversal of the Activity Transition. 1091 * 1092 * @param paused true to pause, false to resume. 1093 */ 1094 public void setPausedForTransition(boolean paused) { 1095 mPausedForTransition = paused; 1096 } 1097 1098 @Override 1099 public ViewParent getParent() { 1100 return null; 1101 } 1102 1103 @Override 1104 public boolean getChildVisibleRect(View child, Rect r, android.graphics.Point offset) { 1105 if (child != mView) { 1106 throw new RuntimeException("child is not mine, honest!"); 1107 } 1108 // Note: don't apply scroll offset, because we want to know its 1109 // visibility in the virtual canvas being given to the view hierarchy. 1110 return r.intersect(0, 0, mWidth, mHeight); 1111 } 1112 1113 @Override 1114 public void bringChildToFront(View child) { 1115 } 1116 1117 int getHostVisibility() { 1118 return (mAppVisible || mForceDecorViewVisibility) ? mView.getVisibility() : View.GONE; 1119 } 1120 1121 /** 1122 * Add LayoutTransition to the list of transitions to be started in the next traversal. 1123 * This list will be cleared after the transitions on the list are start()'ed. These 1124 * transitionsa re added by LayoutTransition itself when it sets up animations. The setup 1125 * happens during the layout phase of traversal, which we want to complete before any of the 1126 * animations are started (because those animations may side-effect properties that layout 1127 * depends upon, like the bounding rectangles of the affected views). So we add the transition 1128 * to the list and it is started just prior to starting the drawing phase of traversal. 1129 * 1130 * @param transition The LayoutTransition to be started on the next traversal. 1131 * 1132 * @hide 1133 */ 1134 public void requestTransitionStart(LayoutTransition transition) { 1135 if (mPendingTransitions == null || !mPendingTransitions.contains(transition)) { 1136 if (mPendingTransitions == null) { 1137 mPendingTransitions = new ArrayList<LayoutTransition>(); 1138 } 1139 mPendingTransitions.add(transition); 1140 } 1141 } 1142 1143 /** 1144 * Notifies the HardwareRenderer that a new frame will be coming soon. 1145 * Currently only {@link ThreadedRenderer} cares about this, and uses 1146 * this knowledge to adjust the scheduling of off-thread animations 1147 */ 1148 void notifyRendererOfFramePending() { 1149 if (mAttachInfo.mHardwareRenderer != null) { 1150 mAttachInfo.mHardwareRenderer.notifyFramePending(); 1151 } 1152 } 1153 1154 void scheduleTraversals() { 1155 if (!mTraversalScheduled) { 1156 mTraversalScheduled = true; 1157 mTraversalBarrier = mHandler.getLooper().getQueue().postSyncBarrier(); 1158 mChoreographer.postCallback( 1159 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 1160 if (!mUnbufferedInputDispatch) { 1161 scheduleConsumeBatchedInput(); 1162 } 1163 notifyRendererOfFramePending(); 1164 pokeDrawLockIfNeeded(); 1165 } 1166 } 1167 1168 void unscheduleTraversals() { 1169 if (mTraversalScheduled) { 1170 mTraversalScheduled = false; 1171 mHandler.getLooper().getQueue().removeSyncBarrier(mTraversalBarrier); 1172 mChoreographer.removeCallbacks( 1173 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 1174 } 1175 } 1176 1177 void doTraversal() { 1178 if (mTraversalScheduled) { 1179 mTraversalScheduled = false; 1180 mHandler.getLooper().getQueue().removeSyncBarrier(mTraversalBarrier); 1181 1182 if (mProfile) { 1183 Debug.startMethodTracing("ViewAncestor"); 1184 } 1185 1186 performTraversals(); 1187 1188 if (mProfile) { 1189 Debug.stopMethodTracing(); 1190 mProfile = false; 1191 } 1192 } 1193 } 1194 1195 private void applyKeepScreenOnFlag(WindowManager.LayoutParams params) { 1196 // Update window's global keep screen on flag: if a view has requested 1197 // that the screen be kept on, then it is always set; otherwise, it is 1198 // set to whatever the client last requested for the global state. 1199 if (mAttachInfo.mKeepScreenOn) { 1200 params.flags |= WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON; 1201 } else { 1202 params.flags = (params.flags&~WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON) 1203 | (mClientWindowLayoutFlags&WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 1204 } 1205 } 1206 1207 private boolean collectViewAttributes() { 1208 if (mAttachInfo.mRecomputeGlobalAttributes) { 1209 //Log.i(mTag, "Computing view hierarchy attributes!"); 1210 mAttachInfo.mRecomputeGlobalAttributes = false; 1211 boolean oldScreenOn = mAttachInfo.mKeepScreenOn; 1212 mAttachInfo.mKeepScreenOn = false; 1213 mAttachInfo.mSystemUiVisibility = 0; 1214 mAttachInfo.mHasSystemUiListeners = false; 1215 mView.dispatchCollectViewAttributes(mAttachInfo, 0); 1216 mAttachInfo.mSystemUiVisibility &= ~mAttachInfo.mDisabledSystemUiVisibility; 1217 WindowManager.LayoutParams params = mWindowAttributes; 1218 mAttachInfo.mSystemUiVisibility |= getImpliedSystemUiVisibility(params); 1219 if (mAttachInfo.mKeepScreenOn != oldScreenOn 1220 || mAttachInfo.mSystemUiVisibility != params.subtreeSystemUiVisibility 1221 || mAttachInfo.mHasSystemUiListeners != params.hasSystemUiListeners) { 1222 applyKeepScreenOnFlag(params); 1223 params.subtreeSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1224 params.hasSystemUiListeners = mAttachInfo.mHasSystemUiListeners; 1225 mView.dispatchWindowSystemUiVisiblityChanged(mAttachInfo.mSystemUiVisibility); 1226 return true; 1227 } 1228 } 1229 return false; 1230 } 1231 1232 private int getImpliedSystemUiVisibility(WindowManager.LayoutParams params) { 1233 int vis = 0; 1234 // Translucent decor window flags imply stable system ui visibility. 1235 if ((params.flags & WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS) != 0) { 1236 vis |= View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN; 1237 } 1238 if ((params.flags & WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION) != 0) { 1239 vis |= View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION; 1240 } 1241 return vis; 1242 } 1243 1244 private boolean measureHierarchy(final View host, final WindowManager.LayoutParams lp, 1245 final Resources res, final int desiredWindowWidth, final int desiredWindowHeight) { 1246 int childWidthMeasureSpec; 1247 int childHeightMeasureSpec; 1248 boolean windowSizeMayChange = false; 1249 1250 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) Log.v(mTag, 1251 "Measuring " + host + " in display " + desiredWindowWidth 1252 + "x" + desiredWindowHeight + "..."); 1253 1254 boolean goodMeasure = false; 1255 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT) { 1256 // On large screens, we don't want to allow dialogs to just 1257 // stretch to fill the entire width of the screen to display 1258 // one line of text. First try doing the layout at a smaller 1259 // size to see if it will fit. 1260 final DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1261 res.getValue(com.android.internal.R.dimen.config_prefDialogWidth, mTmpValue, true); 1262 int baseSize = 0; 1263 if (mTmpValue.type == TypedValue.TYPE_DIMENSION) { 1264 baseSize = (int)mTmpValue.getDimension(packageMetrics); 1265 } 1266 if (DEBUG_DIALOG) Log.v(mTag, "Window " + mView + ": baseSize=" + baseSize 1267 + ", desiredWindowWidth=" + desiredWindowWidth); 1268 if (baseSize != 0 && desiredWindowWidth > baseSize) { 1269 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1270 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1271 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1272 if (DEBUG_DIALOG) Log.v(mTag, "Window " + mView + ": measured (" 1273 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() 1274 + ") from width spec: " + MeasureSpec.toString(childWidthMeasureSpec) 1275 + " and height spec: " + MeasureSpec.toString(childHeightMeasureSpec)); 1276 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1277 goodMeasure = true; 1278 } else { 1279 // Didn't fit in that size... try expanding a bit. 1280 baseSize = (baseSize+desiredWindowWidth)/2; 1281 if (DEBUG_DIALOG) Log.v(mTag, "Window " + mView + ": next baseSize=" 1282 + baseSize); 1283 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1284 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1285 if (DEBUG_DIALOG) Log.v(mTag, "Window " + mView + ": measured (" 1286 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1287 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1288 if (DEBUG_DIALOG) Log.v(mTag, "Good!"); 1289 goodMeasure = true; 1290 } 1291 } 1292 } 1293 } 1294 1295 if (!goodMeasure) { 1296 childWidthMeasureSpec = getRootMeasureSpec(desiredWindowWidth, lp.width); 1297 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1298 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1299 if (mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) { 1300 windowSizeMayChange = true; 1301 } 1302 } 1303 1304 if (DBG) { 1305 System.out.println("======================================"); 1306 System.out.println("performTraversals -- after measure"); 1307 host.debug(); 1308 } 1309 1310 return windowSizeMayChange; 1311 } 1312 1313 /** 1314 * Modifies the input matrix such that it maps view-local coordinates to 1315 * on-screen coordinates. 1316 * 1317 * @param m input matrix to modify 1318 */ 1319 void transformMatrixToGlobal(Matrix m) { 1320 m.preTranslate(mAttachInfo.mWindowLeft, mAttachInfo.mWindowTop); 1321 } 1322 1323 /** 1324 * Modifies the input matrix such that it maps on-screen coordinates to 1325 * view-local coordinates. 1326 * 1327 * @param m input matrix to modify 1328 */ 1329 void transformMatrixToLocal(Matrix m) { 1330 m.postTranslate(-mAttachInfo.mWindowLeft, -mAttachInfo.mWindowTop); 1331 } 1332 1333 /* package */ WindowInsets getWindowInsets(boolean forceConstruct) { 1334 if (mLastWindowInsets == null || forceConstruct) { 1335 mDispatchContentInsets.set(mAttachInfo.mContentInsets); 1336 mDispatchStableInsets.set(mAttachInfo.mStableInsets); 1337 Rect contentInsets = mDispatchContentInsets; 1338 Rect stableInsets = mDispatchStableInsets; 1339 // For dispatch we preserve old logic, but for direct requests from Views we allow to 1340 // immediately use pending insets. 1341 if (!forceConstruct 1342 && (!mPendingContentInsets.equals(contentInsets) || 1343 !mPendingStableInsets.equals(stableInsets))) { 1344 contentInsets = mPendingContentInsets; 1345 stableInsets = mPendingStableInsets; 1346 } 1347 Rect outsets = mAttachInfo.mOutsets; 1348 if (outsets.left > 0 || outsets.top > 0 || outsets.right > 0 || outsets.bottom > 0) { 1349 contentInsets = new Rect(contentInsets.left + outsets.left, 1350 contentInsets.top + outsets.top, contentInsets.right + outsets.right, 1351 contentInsets.bottom + outsets.bottom); 1352 } 1353 mLastWindowInsets = new WindowInsets(contentInsets, 1354 null /* windowDecorInsets */, stableInsets, 1355 mContext.getResources().getConfiguration().isScreenRound(), 1356 mAttachInfo.mAlwaysConsumeNavBar); 1357 } 1358 return mLastWindowInsets; 1359 } 1360 1361 void dispatchApplyInsets(View host) { 1362 host.dispatchApplyWindowInsets(getWindowInsets(true /* forceConstruct */)); 1363 } 1364 1365 private static boolean shouldUseDisplaySize(final WindowManager.LayoutParams lp) { 1366 return lp.type == TYPE_STATUS_BAR_PANEL 1367 || lp.type == TYPE_INPUT_METHOD 1368 || lp.type == TYPE_VOLUME_OVERLAY; 1369 } 1370 1371 private int dipToPx(int dip) { 1372 final DisplayMetrics displayMetrics = mContext.getResources().getDisplayMetrics(); 1373 return (int) (displayMetrics.density * dip + 0.5f); 1374 } 1375 1376 private void performTraversals() { 1377 // cache mView since it is used so much below... 1378 final View host = mView; 1379 1380 if (DBG) { 1381 System.out.println("======================================"); 1382 System.out.println("performTraversals"); 1383 host.debug(); 1384 } 1385 1386 if (host == null || !mAdded) 1387 return; 1388 1389 mIsInTraversal = true; 1390 mWillDrawSoon = true; 1391 boolean windowSizeMayChange = false; 1392 boolean newSurface = false; 1393 boolean surfaceChanged = false; 1394 WindowManager.LayoutParams lp = mWindowAttributes; 1395 1396 int desiredWindowWidth; 1397 int desiredWindowHeight; 1398 1399 final int viewVisibility = getHostVisibility(); 1400 final boolean viewVisibilityChanged = !mFirst 1401 && (mViewVisibility != viewVisibility || mNewSurfaceNeeded); 1402 1403 WindowManager.LayoutParams params = null; 1404 if (mWindowAttributesChanged) { 1405 mWindowAttributesChanged = false; 1406 surfaceChanged = true; 1407 params = lp; 1408 } 1409 CompatibilityInfo compatibilityInfo = mDisplayAdjustments.getCompatibilityInfo(); 1410 if (compatibilityInfo.supportsScreen() == mLastInCompatMode) { 1411 params = lp; 1412 mFullRedrawNeeded = true; 1413 mLayoutRequested = true; 1414 if (mLastInCompatMode) { 1415 params.privateFlags &= ~WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 1416 mLastInCompatMode = false; 1417 } else { 1418 params.privateFlags |= WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 1419 mLastInCompatMode = true; 1420 } 1421 } 1422 1423 mWindowAttributesChangesFlag = 0; 1424 1425 Rect frame = mWinFrame; 1426 if (mFirst) { 1427 mFullRedrawNeeded = true; 1428 mLayoutRequested = true; 1429 1430 if (shouldUseDisplaySize(lp)) { 1431 // NOTE -- system code, won't try to do compat mode. 1432 Point size = new Point(); 1433 mDisplay.getRealSize(size); 1434 desiredWindowWidth = size.x; 1435 desiredWindowHeight = size.y; 1436 } else { 1437 Configuration config = mContext.getResources().getConfiguration(); 1438 desiredWindowWidth = dipToPx(config.screenWidthDp); 1439 desiredWindowHeight = dipToPx(config.screenHeightDp); 1440 } 1441 1442 // We used to use the following condition to choose 32 bits drawing caches: 1443 // PixelFormat.hasAlpha(lp.format) || lp.format == PixelFormat.RGBX_8888 1444 // However, windows are now always 32 bits by default, so choose 32 bits 1445 mAttachInfo.mUse32BitDrawingCache = true; 1446 mAttachInfo.mHasWindowFocus = false; 1447 mAttachInfo.mWindowVisibility = viewVisibility; 1448 mAttachInfo.mRecomputeGlobalAttributes = false; 1449 mLastConfiguration.setTo(host.getResources().getConfiguration()); 1450 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1451 // Set the layout direction if it has not been set before (inherit is the default) 1452 if (mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 1453 host.setLayoutDirection(mLastConfiguration.getLayoutDirection()); 1454 } 1455 host.dispatchAttachedToWindow(mAttachInfo, 0); 1456 mAttachInfo.mTreeObserver.dispatchOnWindowAttachedChange(true); 1457 dispatchApplyInsets(host); 1458 //Log.i(mTag, "Screen on initialized: " + attachInfo.mKeepScreenOn); 1459 1460 } else { 1461 desiredWindowWidth = frame.width(); 1462 desiredWindowHeight = frame.height(); 1463 if (desiredWindowWidth != mWidth || desiredWindowHeight != mHeight) { 1464 if (DEBUG_ORIENTATION) Log.v(mTag, "View " + host + " resized to: " + frame); 1465 mFullRedrawNeeded = true; 1466 mLayoutRequested = true; 1467 windowSizeMayChange = true; 1468 } 1469 } 1470 1471 if (viewVisibilityChanged) { 1472 mAttachInfo.mWindowVisibility = viewVisibility; 1473 host.dispatchWindowVisibilityChanged(viewVisibility); 1474 host.dispatchVisibilityAggregated(viewVisibility == View.VISIBLE); 1475 if (viewVisibility != View.VISIBLE || mNewSurfaceNeeded) { 1476 endDragResizing(); 1477 destroyHardwareResources(); 1478 } 1479 if (viewVisibility == View.GONE) { 1480 // After making a window gone, we will count it as being 1481 // shown for the first time the next time it gets focus. 1482 mHasHadWindowFocus = false; 1483 } 1484 } 1485 1486 // Non-visible windows can't hold accessibility focus. 1487 if (mAttachInfo.mWindowVisibility != View.VISIBLE) { 1488 host.clearAccessibilityFocus(); 1489 } 1490 1491 // Execute enqueued actions on every traversal in case a detached view enqueued an action 1492 getRunQueue().executeActions(mAttachInfo.mHandler); 1493 1494 boolean insetsChanged = false; 1495 1496 boolean layoutRequested = mLayoutRequested && (!mStopped || mReportNextDraw); 1497 if (layoutRequested) { 1498 1499 final Resources res = mView.getContext().getResources(); 1500 1501 if (mFirst) { 1502 // make sure touch mode code executes by setting cached value 1503 // to opposite of the added touch mode. 1504 mAttachInfo.mInTouchMode = !mAddedTouchMode; 1505 ensureTouchModeLocally(mAddedTouchMode); 1506 } else { 1507 if (!mPendingOverscanInsets.equals(mAttachInfo.mOverscanInsets)) { 1508 insetsChanged = true; 1509 } 1510 if (!mPendingContentInsets.equals(mAttachInfo.mContentInsets)) { 1511 insetsChanged = true; 1512 } 1513 if (!mPendingStableInsets.equals(mAttachInfo.mStableInsets)) { 1514 insetsChanged = true; 1515 } 1516 if (!mPendingVisibleInsets.equals(mAttachInfo.mVisibleInsets)) { 1517 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1518 if (DEBUG_LAYOUT) Log.v(mTag, "Visible insets changing to: " 1519 + mAttachInfo.mVisibleInsets); 1520 } 1521 if (!mPendingOutsets.equals(mAttachInfo.mOutsets)) { 1522 insetsChanged = true; 1523 } 1524 if (mPendingAlwaysConsumeNavBar != mAttachInfo.mAlwaysConsumeNavBar) { 1525 insetsChanged = true; 1526 } 1527 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT 1528 || lp.height == ViewGroup.LayoutParams.WRAP_CONTENT) { 1529 windowSizeMayChange = true; 1530 1531 if (shouldUseDisplaySize(lp)) { 1532 // NOTE -- system code, won't try to do compat mode. 1533 Point size = new Point(); 1534 mDisplay.getRealSize(size); 1535 desiredWindowWidth = size.x; 1536 desiredWindowHeight = size.y; 1537 } else { 1538 Configuration config = res.getConfiguration(); 1539 desiredWindowWidth = dipToPx(config.screenWidthDp); 1540 desiredWindowHeight = dipToPx(config.screenHeightDp); 1541 } 1542 } 1543 } 1544 1545 // Ask host how big it wants to be 1546 windowSizeMayChange |= measureHierarchy(host, lp, res, 1547 desiredWindowWidth, desiredWindowHeight); 1548 } 1549 1550 if (collectViewAttributes()) { 1551 params = lp; 1552 } 1553 if (mAttachInfo.mForceReportNewAttributes) { 1554 mAttachInfo.mForceReportNewAttributes = false; 1555 params = lp; 1556 } 1557 1558 if (mFirst || mAttachInfo.mViewVisibilityChanged) { 1559 mAttachInfo.mViewVisibilityChanged = false; 1560 int resizeMode = mSoftInputMode & 1561 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST; 1562 // If we are in auto resize mode, then we need to determine 1563 // what mode to use now. 1564 if (resizeMode == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 1565 final int N = mAttachInfo.mScrollContainers.size(); 1566 for (int i=0; i<N; i++) { 1567 if (mAttachInfo.mScrollContainers.get(i).isShown()) { 1568 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE; 1569 } 1570 } 1571 if (resizeMode == 0) { 1572 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_PAN; 1573 } 1574 if ((lp.softInputMode & 1575 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) != resizeMode) { 1576 lp.softInputMode = (lp.softInputMode & 1577 ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) | 1578 resizeMode; 1579 params = lp; 1580 } 1581 } 1582 } 1583 1584 if (params != null) { 1585 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 1586 if (!PixelFormat.formatHasAlpha(params.format)) { 1587 params.format = PixelFormat.TRANSLUCENT; 1588 } 1589 } 1590 mAttachInfo.mOverscanRequested = (params.flags 1591 & WindowManager.LayoutParams.FLAG_LAYOUT_IN_OVERSCAN) != 0; 1592 } 1593 1594 if (mApplyInsetsRequested) { 1595 mApplyInsetsRequested = false; 1596 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1597 dispatchApplyInsets(host); 1598 if (mLayoutRequested) { 1599 // Short-circuit catching a new layout request here, so 1600 // we don't need to go through two layout passes when things 1601 // change due to fitting system windows, which can happen a lot. 1602 windowSizeMayChange |= measureHierarchy(host, lp, 1603 mView.getContext().getResources(), 1604 desiredWindowWidth, desiredWindowHeight); 1605 } 1606 } 1607 1608 if (layoutRequested) { 1609 // Clear this now, so that if anything requests a layout in the 1610 // rest of this function we will catch it and re-run a full 1611 // layout pass. 1612 mLayoutRequested = false; 1613 } 1614 1615 boolean windowShouldResize = layoutRequested && windowSizeMayChange 1616 && ((mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) 1617 || (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT && 1618 frame.width() < desiredWindowWidth && frame.width() != mWidth) 1619 || (lp.height == ViewGroup.LayoutParams.WRAP_CONTENT && 1620 frame.height() < desiredWindowHeight && frame.height() != mHeight)); 1621 windowShouldResize |= mDragResizing && mResizeMode == RESIZE_MODE_FREEFORM; 1622 1623 // If the activity was just relaunched, it might have unfrozen the task bounds (while 1624 // relaunching), so we need to force a call into window manager to pick up the latest 1625 // bounds. 1626 windowShouldResize |= mActivityRelaunched; 1627 1628 // Determine whether to compute insets. 1629 // If there are no inset listeners remaining then we may still need to compute 1630 // insets in case the old insets were non-empty and must be reset. 1631 final boolean computesInternalInsets = 1632 mAttachInfo.mTreeObserver.hasComputeInternalInsetsListeners() 1633 || mAttachInfo.mHasNonEmptyGivenInternalInsets; 1634 1635 boolean insetsPending = false; 1636 int relayoutResult = 0; 1637 1638 final boolean isViewVisible = viewVisibility == View.VISIBLE; 1639 if (mFirst || windowShouldResize || insetsChanged || 1640 viewVisibilityChanged || params != null || mForceNextWindowRelayout) { 1641 mForceNextWindowRelayout = false; 1642 1643 if (isViewVisible) { 1644 // If this window is giving internal insets to the window 1645 // manager, and it is being added or changing its visibility, 1646 // then we want to first give the window manager "fake" 1647 // insets to cause it to effectively ignore the content of 1648 // the window during layout. This avoids it briefly causing 1649 // other windows to resize/move based on the raw frame of the 1650 // window, waiting until we can finish laying out this window 1651 // and get back to the window manager with the ultimately 1652 // computed insets. 1653 insetsPending = computesInternalInsets && (mFirst || viewVisibilityChanged); 1654 } 1655 1656 if (mSurfaceHolder != null) { 1657 mSurfaceHolder.mSurfaceLock.lock(); 1658 mDrawingAllowed = true; 1659 } 1660 1661 boolean hwInitialized = false; 1662 boolean contentInsetsChanged = false; 1663 boolean hadSurface = mSurface.isValid(); 1664 1665 try { 1666 if (DEBUG_LAYOUT) { 1667 Log.i(mTag, "host=w:" + host.getMeasuredWidth() + ", h:" + 1668 host.getMeasuredHeight() + ", params=" + params); 1669 } 1670 1671 if (mAttachInfo.mHardwareRenderer != null) { 1672 // relayoutWindow may decide to destroy mSurface. As that decision 1673 // happens in WindowManager service, we need to be defensive here 1674 // and stop using the surface in case it gets destroyed. 1675 if (mAttachInfo.mHardwareRenderer.pauseSurface(mSurface)) { 1676 // Animations were running so we need to push a frame 1677 // to resume them 1678 mDirty.set(0, 0, mWidth, mHeight); 1679 } 1680 mChoreographer.mFrameInfo.addFlags(FrameInfo.FLAG_WINDOW_LAYOUT_CHANGED); 1681 } 1682 final int surfaceGenerationId = mSurface.getGenerationId(); 1683 relayoutResult = relayoutWindow(params, viewVisibility, insetsPending); 1684 1685 if (DEBUG_LAYOUT) Log.v(mTag, "relayout: frame=" + frame.toShortString() 1686 + " overscan=" + mPendingOverscanInsets.toShortString() 1687 + " content=" + mPendingContentInsets.toShortString() 1688 + " visible=" + mPendingVisibleInsets.toShortString() 1689 + " visible=" + mPendingStableInsets.toShortString() 1690 + " outsets=" + mPendingOutsets.toShortString() 1691 + " surface=" + mSurface); 1692 1693 if (mPendingConfiguration.seq != 0) { 1694 if (DEBUG_CONFIGURATION) Log.v(mTag, "Visible with new config: " 1695 + mPendingConfiguration); 1696 updateConfiguration(new Configuration(mPendingConfiguration), !mFirst); 1697 mPendingConfiguration.seq = 0; 1698 } 1699 1700 final boolean overscanInsetsChanged = !mPendingOverscanInsets.equals( 1701 mAttachInfo.mOverscanInsets); 1702 contentInsetsChanged = !mPendingContentInsets.equals( 1703 mAttachInfo.mContentInsets); 1704 final boolean visibleInsetsChanged = !mPendingVisibleInsets.equals( 1705 mAttachInfo.mVisibleInsets); 1706 final boolean stableInsetsChanged = !mPendingStableInsets.equals( 1707 mAttachInfo.mStableInsets); 1708 final boolean outsetsChanged = !mPendingOutsets.equals(mAttachInfo.mOutsets); 1709 final boolean surfaceSizeChanged = (relayoutResult 1710 & WindowManagerGlobal.RELAYOUT_RES_SURFACE_RESIZED) != 0; 1711 final boolean alwaysConsumeNavBarChanged = 1712 mPendingAlwaysConsumeNavBar != mAttachInfo.mAlwaysConsumeNavBar; 1713 if (contentInsetsChanged) { 1714 mAttachInfo.mContentInsets.set(mPendingContentInsets); 1715 if (DEBUG_LAYOUT) Log.v(mTag, "Content insets changing to: " 1716 + mAttachInfo.mContentInsets); 1717 } 1718 if (overscanInsetsChanged) { 1719 mAttachInfo.mOverscanInsets.set(mPendingOverscanInsets); 1720 if (DEBUG_LAYOUT) Log.v(mTag, "Overscan insets changing to: " 1721 + mAttachInfo.mOverscanInsets); 1722 // Need to relayout with content insets. 1723 contentInsetsChanged = true; 1724 } 1725 if (stableInsetsChanged) { 1726 mAttachInfo.mStableInsets.set(mPendingStableInsets); 1727 if (DEBUG_LAYOUT) Log.v(mTag, "Decor insets changing to: " 1728 + mAttachInfo.mStableInsets); 1729 // Need to relayout with content insets. 1730 contentInsetsChanged = true; 1731 } 1732 if (alwaysConsumeNavBarChanged) { 1733 mAttachInfo.mAlwaysConsumeNavBar = mPendingAlwaysConsumeNavBar; 1734 contentInsetsChanged = true; 1735 } 1736 if (contentInsetsChanged || mLastSystemUiVisibility != 1737 mAttachInfo.mSystemUiVisibility || mApplyInsetsRequested 1738 || mLastOverscanRequested != mAttachInfo.mOverscanRequested 1739 || outsetsChanged) { 1740 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1741 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1742 mAttachInfo.mOutsets.set(mPendingOutsets); 1743 mApplyInsetsRequested = false; 1744 dispatchApplyInsets(host); 1745 } 1746 if (visibleInsetsChanged) { 1747 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1748 if (DEBUG_LAYOUT) Log.v(mTag, "Visible insets changing to: " 1749 + mAttachInfo.mVisibleInsets); 1750 } 1751 1752 if (!hadSurface) { 1753 if (mSurface.isValid()) { 1754 // If we are creating a new surface, then we need to 1755 // completely redraw it. Also, when we get to the 1756 // point of drawing it we will hold off and schedule 1757 // a new traversal instead. This is so we can tell the 1758 // window manager about all of the windows being displayed 1759 // before actually drawing them, so it can display then 1760 // all at once. 1761 newSurface = true; 1762 mFullRedrawNeeded = true; 1763 mPreviousTransparentRegion.setEmpty(); 1764 1765 // Only initialize up-front if transparent regions are not 1766 // requested, otherwise defer to see if the entire window 1767 // will be transparent 1768 if (mAttachInfo.mHardwareRenderer != null) { 1769 try { 1770 hwInitialized = mAttachInfo.mHardwareRenderer.initialize( 1771 mSurface); 1772 if (hwInitialized && (host.mPrivateFlags 1773 & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) == 0) { 1774 // Don't pre-allocate if transparent regions 1775 // are requested as they may not be needed 1776 mSurface.allocateBuffers(); 1777 } 1778 } catch (OutOfResourcesException e) { 1779 handleOutOfResourcesException(e); 1780 return; 1781 } 1782 } 1783 } 1784 } else if (!mSurface.isValid()) { 1785 // If the surface has been removed, then reset the scroll 1786 // positions. 1787 if (mLastScrolledFocus != null) { 1788 mLastScrolledFocus.clear(); 1789 } 1790 mScrollY = mCurScrollY = 0; 1791 if (mView instanceof RootViewSurfaceTaker) { 1792 ((RootViewSurfaceTaker) mView).onRootViewScrollYChanged(mCurScrollY); 1793 } 1794 if (mScroller != null) { 1795 mScroller.abortAnimation(); 1796 } 1797 // Our surface is gone 1798 if (mAttachInfo.mHardwareRenderer != null && 1799 mAttachInfo.mHardwareRenderer.isEnabled()) { 1800 mAttachInfo.mHardwareRenderer.destroy(); 1801 } 1802 } else if ((surfaceGenerationId != mSurface.getGenerationId() 1803 || surfaceSizeChanged) 1804 && mSurfaceHolder == null 1805 && mAttachInfo.mHardwareRenderer != null) { 1806 mFullRedrawNeeded = true; 1807 try { 1808 // Need to do updateSurface (which leads to CanvasContext::setSurface and 1809 // re-create the EGLSurface) if either the Surface changed (as indicated by 1810 // generation id), or WindowManager changed the surface size. The latter is 1811 // because on some chips, changing the consumer side's BufferQueue size may 1812 // not take effect immediately unless we create a new EGLSurface. 1813 // Note that frame size change doesn't always imply surface size change (eg. 1814 // drag resizing uses fullscreen surface), need to check surfaceSizeChanged 1815 // flag from WindowManager. 1816 mAttachInfo.mHardwareRenderer.updateSurface(mSurface); 1817 } catch (OutOfResourcesException e) { 1818 handleOutOfResourcesException(e); 1819 return; 1820 } 1821 } 1822 1823 final boolean freeformResizing = (relayoutResult 1824 & WindowManagerGlobal.RELAYOUT_RES_DRAG_RESIZING_FREEFORM) != 0; 1825 final boolean dockedResizing = (relayoutResult 1826 & WindowManagerGlobal.RELAYOUT_RES_DRAG_RESIZING_DOCKED) != 0; 1827 final boolean dragResizing = freeformResizing || dockedResizing; 1828 if (mDragResizing != dragResizing) { 1829 if (dragResizing) { 1830 mResizeMode = freeformResizing 1831 ? RESIZE_MODE_FREEFORM 1832 : RESIZE_MODE_DOCKED_DIVIDER; 1833 startDragResizing(mPendingBackDropFrame, 1834 mWinFrame.equals(mPendingBackDropFrame), mPendingVisibleInsets, 1835 mPendingStableInsets, mResizeMode); 1836 } else { 1837 // We shouldn't come here, but if we come we should end the resize. 1838 endDragResizing(); 1839 } 1840 } 1841 if (!USE_MT_RENDERER) { 1842 if (dragResizing) { 1843 mCanvasOffsetX = mWinFrame.left; 1844 mCanvasOffsetY = mWinFrame.top; 1845 } else { 1846 mCanvasOffsetX = mCanvasOffsetY = 0; 1847 } 1848 } 1849 } catch (RemoteException e) { 1850 } 1851 1852 if (DEBUG_ORIENTATION) Log.v( 1853 TAG, "Relayout returned: frame=" + frame + ", surface=" + mSurface); 1854 1855 mAttachInfo.mWindowLeft = frame.left; 1856 mAttachInfo.mWindowTop = frame.top; 1857 1858 // !!FIXME!! This next section handles the case where we did not get the 1859 // window size we asked for. We should avoid this by getting a maximum size from 1860 // the window session beforehand. 1861 if (mWidth != frame.width() || mHeight != frame.height()) { 1862 mWidth = frame.width(); 1863 mHeight = frame.height(); 1864 } 1865 1866 if (mSurfaceHolder != null) { 1867 // The app owns the surface; tell it about what is going on. 1868 if (mSurface.isValid()) { 1869 // XXX .copyFrom() doesn't work! 1870 //mSurfaceHolder.mSurface.copyFrom(mSurface); 1871 mSurfaceHolder.mSurface = mSurface; 1872 } 1873 mSurfaceHolder.setSurfaceFrameSize(mWidth, mHeight); 1874 mSurfaceHolder.mSurfaceLock.unlock(); 1875 if (mSurface.isValid()) { 1876 if (!hadSurface) { 1877 mSurfaceHolder.ungetCallbacks(); 1878 1879 mIsCreating = true; 1880 mSurfaceHolderCallback.surfaceCreated(mSurfaceHolder); 1881 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1882 if (callbacks != null) { 1883 for (SurfaceHolder.Callback c : callbacks) { 1884 c.surfaceCreated(mSurfaceHolder); 1885 } 1886 } 1887 surfaceChanged = true; 1888 } 1889 if (surfaceChanged) { 1890 mSurfaceHolderCallback.surfaceChanged(mSurfaceHolder, 1891 lp.format, mWidth, mHeight); 1892 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1893 if (callbacks != null) { 1894 for (SurfaceHolder.Callback c : callbacks) { 1895 c.surfaceChanged(mSurfaceHolder, lp.format, 1896 mWidth, mHeight); 1897 } 1898 } 1899 } 1900 mIsCreating = false; 1901 } else if (hadSurface) { 1902 mSurfaceHolder.ungetCallbacks(); 1903 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1904 mSurfaceHolderCallback.surfaceDestroyed(mSurfaceHolder); 1905 if (callbacks != null) { 1906 for (SurfaceHolder.Callback c : callbacks) { 1907 c.surfaceDestroyed(mSurfaceHolder); 1908 } 1909 } 1910 mSurfaceHolder.mSurfaceLock.lock(); 1911 try { 1912 mSurfaceHolder.mSurface = new Surface(); 1913 } finally { 1914 mSurfaceHolder.mSurfaceLock.unlock(); 1915 } 1916 } 1917 } 1918 1919 final ThreadedRenderer hardwareRenderer = mAttachInfo.mHardwareRenderer; 1920 if (hardwareRenderer != null && hardwareRenderer.isEnabled()) { 1921 if (hwInitialized 1922 || mWidth != hardwareRenderer.getWidth() 1923 || mHeight != hardwareRenderer.getHeight()) { 1924 hardwareRenderer.setup(mWidth, mHeight, mAttachInfo, 1925 mWindowAttributes.surfaceInsets); 1926 } 1927 } 1928 1929 if (!mStopped || mReportNextDraw) { 1930 boolean focusChangedDueToTouchMode = ensureTouchModeLocally( 1931 (relayoutResult&WindowManagerGlobal.RELAYOUT_RES_IN_TOUCH_MODE) != 0); 1932 if (focusChangedDueToTouchMode || mWidth != host.getMeasuredWidth() 1933 || mHeight != host.getMeasuredHeight() || contentInsetsChanged) { 1934 int childWidthMeasureSpec = getRootMeasureSpec(mWidth, lp.width); 1935 int childHeightMeasureSpec = getRootMeasureSpec(mHeight, lp.height); 1936 1937 if (DEBUG_LAYOUT) Log.v(mTag, "Ooops, something changed! mWidth=" 1938 + mWidth + " measuredWidth=" + host.getMeasuredWidth() 1939 + " mHeight=" + mHeight 1940 + " measuredHeight=" + host.getMeasuredHeight() 1941 + " coveredInsetsChanged=" + contentInsetsChanged); 1942 1943 // Ask host how big it wants to be 1944 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1945 1946 // Implementation of weights from WindowManager.LayoutParams 1947 // We just grow the dimensions as needed and re-measure if 1948 // needs be 1949 int width = host.getMeasuredWidth(); 1950 int height = host.getMeasuredHeight(); 1951 boolean measureAgain = false; 1952 1953 if (lp.horizontalWeight > 0.0f) { 1954 width += (int) ((mWidth - width) * lp.horizontalWeight); 1955 childWidthMeasureSpec = MeasureSpec.makeMeasureSpec(width, 1956 MeasureSpec.EXACTLY); 1957 measureAgain = true; 1958 } 1959 if (lp.verticalWeight > 0.0f) { 1960 height += (int) ((mHeight - height) * lp.verticalWeight); 1961 childHeightMeasureSpec = MeasureSpec.makeMeasureSpec(height, 1962 MeasureSpec.EXACTLY); 1963 measureAgain = true; 1964 } 1965 1966 if (measureAgain) { 1967 if (DEBUG_LAYOUT) Log.v(mTag, 1968 "And hey let's measure once more: width=" + width 1969 + " height=" + height); 1970 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1971 } 1972 1973 layoutRequested = true; 1974 } 1975 } 1976 } else { 1977 // Not the first pass and no window/insets/visibility change but the window 1978 // may have moved and we need check that and if so to update the left and right 1979 // in the attach info. We translate only the window frame since on window move 1980 // the window manager tells us only for the new frame but the insets are the 1981 // same and we do not want to translate them more than once. 1982 maybeHandleWindowMove(frame); 1983 } 1984 1985 final boolean didLayout = layoutRequested && (!mStopped || mReportNextDraw); 1986 boolean triggerGlobalLayoutListener = didLayout 1987 || mAttachInfo.mRecomputeGlobalAttributes; 1988 if (didLayout) { 1989 performLayout(lp, mWidth, mHeight); 1990 1991 // By this point all views have been sized and positioned 1992 // We can compute the transparent area 1993 1994 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 1995 // start out transparent 1996 // TODO: AVOID THAT CALL BY CACHING THE RESULT? 1997 host.getLocationInWindow(mTmpLocation); 1998 mTransparentRegion.set(mTmpLocation[0], mTmpLocation[1], 1999 mTmpLocation[0] + host.mRight - host.mLeft, 2000 mTmpLocation[1] + host.mBottom - host.mTop); 2001 2002 host.gatherTransparentRegion(mTransparentRegion); 2003 if (mTranslator != null) { 2004 mTranslator.translateRegionInWindowToScreen(mTransparentRegion); 2005 } 2006 2007 if (!mTransparentRegion.equals(mPreviousTransparentRegion)) { 2008 mPreviousTransparentRegion.set(mTransparentRegion); 2009 mFullRedrawNeeded = true; 2010 // reconfigure window manager 2011 try { 2012 mWindowSession.setTransparentRegion(mWindow, mTransparentRegion); 2013 } catch (RemoteException e) { 2014 } 2015 } 2016 } 2017 2018 if (DBG) { 2019 System.out.println("======================================"); 2020 System.out.println("performTraversals -- after setFrame"); 2021 host.debug(); 2022 } 2023 } 2024 2025 if (triggerGlobalLayoutListener) { 2026 mAttachInfo.mRecomputeGlobalAttributes = false; 2027 mAttachInfo.mTreeObserver.dispatchOnGlobalLayout(); 2028 } 2029 2030 if (computesInternalInsets) { 2031 // Clear the original insets. 2032 final ViewTreeObserver.InternalInsetsInfo insets = mAttachInfo.mGivenInternalInsets; 2033 insets.reset(); 2034 2035 // Compute new insets in place. 2036 mAttachInfo.mTreeObserver.dispatchOnComputeInternalInsets(insets); 2037 mAttachInfo.mHasNonEmptyGivenInternalInsets = !insets.isEmpty(); 2038 2039 // Tell the window manager. 2040 if (insetsPending || !mLastGivenInsets.equals(insets)) { 2041 mLastGivenInsets.set(insets); 2042 2043 // Translate insets to screen coordinates if needed. 2044 final Rect contentInsets; 2045 final Rect visibleInsets; 2046 final Region touchableRegion; 2047 if (mTranslator != null) { 2048 contentInsets = mTranslator.getTranslatedContentInsets(insets.contentInsets); 2049 visibleInsets = mTranslator.getTranslatedVisibleInsets(insets.visibleInsets); 2050 touchableRegion = mTranslator.getTranslatedTouchableArea(insets.touchableRegion); 2051 } else { 2052 contentInsets = insets.contentInsets; 2053 visibleInsets = insets.visibleInsets; 2054 touchableRegion = insets.touchableRegion; 2055 } 2056 2057 try { 2058 mWindowSession.setInsets(mWindow, insets.mTouchableInsets, 2059 contentInsets, visibleInsets, touchableRegion); 2060 } catch (RemoteException e) { 2061 } 2062 } 2063 } 2064 2065 if (mFirst) { 2066 // handle first focus request 2067 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "First: mView.hasFocus()=" 2068 + mView.hasFocus()); 2069 if (mView != null) { 2070 if (!mView.hasFocus()) { 2071 mView.requestFocus(View.FOCUS_FORWARD); 2072 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "First: requested focused view=" 2073 + mView.findFocus()); 2074 } else { 2075 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "First: existing focused view=" 2076 + mView.findFocus()); 2077 } 2078 } 2079 } 2080 2081 final boolean changedVisibility = (viewVisibilityChanged || mFirst) && isViewVisible; 2082 final boolean hasWindowFocus = mAttachInfo.mHasWindowFocus && isViewVisible; 2083 final boolean regainedFocus = hasWindowFocus && mLostWindowFocus; 2084 if (regainedFocus) { 2085 mLostWindowFocus = false; 2086 } else if (!hasWindowFocus && mHadWindowFocus) { 2087 mLostWindowFocus = true; 2088 } 2089 2090 if (changedVisibility || regainedFocus) { 2091 host.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 2092 } 2093 2094 mFirst = false; 2095 mWillDrawSoon = false; 2096 mNewSurfaceNeeded = false; 2097 mActivityRelaunched = false; 2098 mViewVisibility = viewVisibility; 2099 mHadWindowFocus = hasWindowFocus; 2100 2101 if (hasWindowFocus && !isInLocalFocusMode()) { 2102 final boolean imTarget = WindowManager.LayoutParams 2103 .mayUseInputMethod(mWindowAttributes.flags); 2104 if (imTarget != mLastWasImTarget) { 2105 mLastWasImTarget = imTarget; 2106 InputMethodManager imm = InputMethodManager.peekInstance(); 2107 if (imm != null && imTarget) { 2108 imm.onPreWindowFocus(mView, hasWindowFocus); 2109 imm.onPostWindowFocus(mView, mView.findFocus(), 2110 mWindowAttributes.softInputMode, 2111 !mHasHadWindowFocus, mWindowAttributes.flags); 2112 } 2113 } 2114 } 2115 2116 // Remember if we must report the next draw. 2117 if ((relayoutResult & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 2118 mReportNextDraw = true; 2119 } 2120 2121 boolean cancelDraw = mAttachInfo.mTreeObserver.dispatchOnPreDraw() || !isViewVisible; 2122 2123 if (!cancelDraw) { 2124 if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 2125 for (int i = 0; i < mPendingTransitions.size(); ++i) { 2126 mPendingTransitions.get(i).startChangingAnimations(); 2127 } 2128 mPendingTransitions.clear(); 2129 } 2130 2131 performDraw(); 2132 } else { 2133 if (isViewVisible) { 2134 // Try again 2135 scheduleTraversals(); 2136 } else if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 2137 for (int i = 0; i < mPendingTransitions.size(); ++i) { 2138 mPendingTransitions.get(i).endChangingAnimations(); 2139 } 2140 mPendingTransitions.clear(); 2141 } 2142 } 2143 2144 mIsInTraversal = false; 2145 } 2146 2147 private void maybeHandleWindowMove(Rect frame) { 2148 2149 // TODO: Well, we are checking whether the frame has changed similarly 2150 // to how this is done for the insets. This is however incorrect since 2151 // the insets and the frame are translated. For example, the old frame 2152 // was (1, 1 - 1, 1) and was translated to say (2, 2 - 2, 2), now the new 2153 // reported frame is (2, 2 - 2, 2) which implies no change but this is not 2154 // true since we are comparing a not translated value to a translated one. 2155 // This scenario is rare but we may want to fix that. 2156 2157 final boolean windowMoved = mAttachInfo.mWindowLeft != frame.left 2158 || mAttachInfo.mWindowTop != frame.top; 2159 if (windowMoved) { 2160 if (mTranslator != null) { 2161 mTranslator.translateRectInScreenToAppWinFrame(frame); 2162 } 2163 mAttachInfo.mWindowLeft = frame.left; 2164 mAttachInfo.mWindowTop = frame.top; 2165 2166 // Update the light position for the new window offsets. 2167 if (mAttachInfo.mHardwareRenderer != null) { 2168 mAttachInfo.mHardwareRenderer.setLightCenter(mAttachInfo); 2169 } 2170 } 2171 } 2172 2173 private void handleOutOfResourcesException(Surface.OutOfResourcesException e) { 2174 Log.e(mTag, "OutOfResourcesException initializing HW surface", e); 2175 try { 2176 if (!mWindowSession.outOfMemory(mWindow) && 2177 Process.myUid() != Process.SYSTEM_UID) { 2178 Slog.w(mTag, "No processes killed for memory; killing self"); 2179 Process.killProcess(Process.myPid()); 2180 } 2181 } catch (RemoteException ex) { 2182 } 2183 mLayoutRequested = true; // ask wm for a new surface next time. 2184 } 2185 2186 private void performMeasure(int childWidthMeasureSpec, int childHeightMeasureSpec) { 2187 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "measure"); 2188 try { 2189 mView.measure(childWidthMeasureSpec, childHeightMeasureSpec); 2190 } finally { 2191 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2192 } 2193 } 2194 2195 /** 2196 * Called by {@link android.view.View#isInLayout()} to determine whether the view hierarchy 2197 * is currently undergoing a layout pass. 2198 * 2199 * @return whether the view hierarchy is currently undergoing a layout pass 2200 */ 2201 boolean isInLayout() { 2202 return mInLayout; 2203 } 2204 2205 /** 2206 * Called by {@link android.view.View#requestLayout()} if the view hierarchy is currently 2207 * undergoing a layout pass. requestLayout() should not generally be called during layout, 2208 * unless the container hierarchy knows what it is doing (i.e., it is fine as long as 2209 * all children in that container hierarchy are measured and laid out at the end of the layout 2210 * pass for that container). If requestLayout() is called anyway, we handle it correctly 2211 * by registering all requesters during a frame as it proceeds. At the end of the frame, 2212 * we check all of those views to see if any still have pending layout requests, which 2213 * indicates that they were not correctly handled by their container hierarchy. If that is 2214 * the case, we clear all such flags in the tree, to remove the buggy flag state that leads 2215 * to blank containers, and force a second request/measure/layout pass in this frame. If 2216 * more requestLayout() calls are received during that second layout pass, we post those 2217 * requests to the next frame to avoid possible infinite loops. 2218 * 2219 * <p>The return value from this method indicates whether the request should proceed 2220 * (if it is a request during the first layout pass) or should be skipped and posted to the 2221 * next frame (if it is a request during the second layout pass).</p> 2222 * 2223 * @param view the view that requested the layout. 2224 * 2225 * @return true if request should proceed, false otherwise. 2226 */ 2227 boolean requestLayoutDuringLayout(final View view) { 2228 if (view.mParent == null || view.mAttachInfo == null) { 2229 // Would not normally trigger another layout, so just let it pass through as usual 2230 return true; 2231 } 2232 if (!mLayoutRequesters.contains(view)) { 2233 mLayoutRequesters.add(view); 2234 } 2235 if (!mHandlingLayoutInLayoutRequest) { 2236 // Let the request proceed normally; it will be processed in a second layout pass 2237 // if necessary 2238 return true; 2239 } else { 2240 // Don't let the request proceed during the second layout pass. 2241 // It will post to the next frame instead. 2242 return false; 2243 } 2244 } 2245 2246 private void performLayout(WindowManager.LayoutParams lp, int desiredWindowWidth, 2247 int desiredWindowHeight) { 2248 mLayoutRequested = false; 2249 mScrollMayChange = true; 2250 mInLayout = true; 2251 2252 final View host = mView; 2253 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) { 2254 Log.v(mTag, "Laying out " + host + " to (" + 2255 host.getMeasuredWidth() + ", " + host.getMeasuredHeight() + ")"); 2256 } 2257 2258 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "layout"); 2259 try { 2260 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 2261 2262 mInLayout = false; 2263 int numViewsRequestingLayout = mLayoutRequesters.size(); 2264 if (numViewsRequestingLayout > 0) { 2265 // requestLayout() was called during layout. 2266 // If no layout-request flags are set on the requesting views, there is no problem. 2267 // If some requests are still pending, then we need to clear those flags and do 2268 // a full request/measure/layout pass to handle this situation. 2269 ArrayList<View> validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, 2270 false); 2271 if (validLayoutRequesters != null) { 2272 // Set this flag to indicate that any further requests are happening during 2273 // the second pass, which may result in posting those requests to the next 2274 // frame instead 2275 mHandlingLayoutInLayoutRequest = true; 2276 2277 // Process fresh layout requests, then measure and layout 2278 int numValidRequests = validLayoutRequesters.size(); 2279 for (int i = 0; i < numValidRequests; ++i) { 2280 final View view = validLayoutRequesters.get(i); 2281 Log.w("View", "requestLayout() improperly called by " + view + 2282 " during layout: running second layout pass"); 2283 view.requestLayout(); 2284 } 2285 measureHierarchy(host, lp, mView.getContext().getResources(), 2286 desiredWindowWidth, desiredWindowHeight); 2287 mInLayout = true; 2288 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 2289 2290 mHandlingLayoutInLayoutRequest = false; 2291 2292 // Check the valid requests again, this time without checking/clearing the 2293 // layout flags, since requests happening during the second pass get noop'd 2294 validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, true); 2295 if (validLayoutRequesters != null) { 2296 final ArrayList<View> finalRequesters = validLayoutRequesters; 2297 // Post second-pass requests to the next frame 2298 getRunQueue().post(new Runnable() { 2299 @Override 2300 public void run() { 2301 int numValidRequests = finalRequesters.size(); 2302 for (int i = 0; i < numValidRequests; ++i) { 2303 final View view = finalRequesters.get(i); 2304 Log.w("View", "requestLayout() improperly called by " + view + 2305 " during second layout pass: posting in next frame"); 2306 view.requestLayout(); 2307 } 2308 } 2309 }); 2310 } 2311 } 2312 2313 } 2314 } finally { 2315 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2316 } 2317 mInLayout = false; 2318 } 2319 2320 /** 2321 * This method is called during layout when there have been calls to requestLayout() during 2322 * layout. It walks through the list of views that requested layout to determine which ones 2323 * still need it, based on visibility in the hierarchy and whether they have already been 2324 * handled (as is usually the case with ListView children). 2325 * 2326 * @param layoutRequesters The list of views that requested layout during layout 2327 * @param secondLayoutRequests Whether the requests were issued during the second layout pass. 2328 * If so, the FORCE_LAYOUT flag was not set on requesters. 2329 * @return A list of the actual views that still need to be laid out. 2330 */ 2331 private ArrayList<View> getValidLayoutRequesters(ArrayList<View> layoutRequesters, 2332 boolean secondLayoutRequests) { 2333 2334 int numViewsRequestingLayout = layoutRequesters.size(); 2335 ArrayList<View> validLayoutRequesters = null; 2336 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2337 View view = layoutRequesters.get(i); 2338 if (view != null && view.mAttachInfo != null && view.mParent != null && 2339 (secondLayoutRequests || (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) == 2340 View.PFLAG_FORCE_LAYOUT)) { 2341 boolean gone = false; 2342 View parent = view; 2343 // Only trigger new requests for views in a non-GONE hierarchy 2344 while (parent != null) { 2345 if ((parent.mViewFlags & View.VISIBILITY_MASK) == View.GONE) { 2346 gone = true; 2347 break; 2348 } 2349 if (parent.mParent instanceof View) { 2350 parent = (View) parent.mParent; 2351 } else { 2352 parent = null; 2353 } 2354 } 2355 if (!gone) { 2356 if (validLayoutRequesters == null) { 2357 validLayoutRequesters = new ArrayList<View>(); 2358 } 2359 validLayoutRequesters.add(view); 2360 } 2361 } 2362 } 2363 if (!secondLayoutRequests) { 2364 // If we're checking the layout flags, then we need to clean them up also 2365 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2366 View view = layoutRequesters.get(i); 2367 while (view != null && 2368 (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) != 0) { 2369 view.mPrivateFlags &= ~View.PFLAG_FORCE_LAYOUT; 2370 if (view.mParent instanceof View) { 2371 view = (View) view.mParent; 2372 } else { 2373 view = null; 2374 } 2375 } 2376 } 2377 } 2378 layoutRequesters.clear(); 2379 return validLayoutRequesters; 2380 } 2381 2382 @Override 2383 public void requestTransparentRegion(View child) { 2384 // the test below should not fail unless someone is messing with us 2385 checkThread(); 2386 if (mView == child) { 2387 mView.mPrivateFlags |= View.PFLAG_REQUEST_TRANSPARENT_REGIONS; 2388 // Need to make sure we re-evaluate the window attributes next 2389 // time around, to ensure the window has the correct format. 2390 mWindowAttributesChanged = true; 2391 mWindowAttributesChangesFlag = 0; 2392 requestLayout(); 2393 } 2394 } 2395 2396 /** 2397 * Figures out the measure spec for the root view in a window based on it's 2398 * layout params. 2399 * 2400 * @param windowSize 2401 * The available width or height of the window 2402 * 2403 * @param rootDimension 2404 * The layout params for one dimension (width or height) of the 2405 * window. 2406 * 2407 * @return The measure spec to use to measure the root view. 2408 */ 2409 private static int getRootMeasureSpec(int windowSize, int rootDimension) { 2410 int measureSpec; 2411 switch (rootDimension) { 2412 2413 case ViewGroup.LayoutParams.MATCH_PARENT: 2414 // Window can't resize. Force root view to be windowSize. 2415 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.EXACTLY); 2416 break; 2417 case ViewGroup.LayoutParams.WRAP_CONTENT: 2418 // Window can resize. Set max size for root view. 2419 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.AT_MOST); 2420 break; 2421 default: 2422 // Window wants to be an exact size. Force root view to be that size. 2423 measureSpec = MeasureSpec.makeMeasureSpec(rootDimension, MeasureSpec.EXACTLY); 2424 break; 2425 } 2426 return measureSpec; 2427 } 2428 2429 int mHardwareXOffset; 2430 int mHardwareYOffset; 2431 2432 @Override 2433 public void onHardwarePreDraw(DisplayListCanvas canvas) { 2434 canvas.translate(-mHardwareXOffset, -mHardwareYOffset); 2435 } 2436 2437 @Override 2438 public void onHardwarePostDraw(DisplayListCanvas canvas) { 2439 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2440 synchronized (mWindowCallbacks) { 2441 for (int i = mWindowCallbacks.size() - 1; i >= 0; i--) { 2442 mWindowCallbacks.get(i).onPostDraw(canvas); 2443 } 2444 } 2445 } 2446 2447 /** 2448 * @hide 2449 */ 2450 void outputDisplayList(View view) { 2451 view.mRenderNode.output(); 2452 if (mAttachInfo.mHardwareRenderer != null) { 2453 ((ThreadedRenderer)mAttachInfo.mHardwareRenderer).serializeDisplayListTree(); 2454 } 2455 } 2456 2457 /** 2458 * @see #PROPERTY_PROFILE_RENDERING 2459 */ 2460 private void profileRendering(boolean enabled) { 2461 if (mProfileRendering) { 2462 mRenderProfilingEnabled = enabled; 2463 2464 if (mRenderProfiler != null) { 2465 mChoreographer.removeFrameCallback(mRenderProfiler); 2466 } 2467 if (mRenderProfilingEnabled) { 2468 if (mRenderProfiler == null) { 2469 mRenderProfiler = new Choreographer.FrameCallback() { 2470 @Override 2471 public void doFrame(long frameTimeNanos) { 2472 mDirty.set(0, 0, mWidth, mHeight); 2473 scheduleTraversals(); 2474 if (mRenderProfilingEnabled) { 2475 mChoreographer.postFrameCallback(mRenderProfiler); 2476 } 2477 } 2478 }; 2479 } 2480 mChoreographer.postFrameCallback(mRenderProfiler); 2481 } else { 2482 mRenderProfiler = null; 2483 } 2484 } 2485 } 2486 2487 /** 2488 * Called from draw() when DEBUG_FPS is enabled 2489 */ 2490 private void trackFPS() { 2491 // Tracks frames per second drawn. First value in a series of draws may be bogus 2492 // because it down not account for the intervening idle time 2493 long nowTime = System.currentTimeMillis(); 2494 if (mFpsStartTime < 0) { 2495 mFpsStartTime = mFpsPrevTime = nowTime; 2496 mFpsNumFrames = 0; 2497 } else { 2498 ++mFpsNumFrames; 2499 String thisHash = Integer.toHexString(System.identityHashCode(this)); 2500 long frameTime = nowTime - mFpsPrevTime; 2501 long totalTime = nowTime - mFpsStartTime; 2502 Log.v(mTag, "0x" + thisHash + "\tFrame time:\t" + frameTime); 2503 mFpsPrevTime = nowTime; 2504 if (totalTime > 1000) { 2505 float fps = (float) mFpsNumFrames * 1000 / totalTime; 2506 Log.v(mTag, "0x" + thisHash + "\tFPS:\t" + fps); 2507 mFpsStartTime = nowTime; 2508 mFpsNumFrames = 0; 2509 } 2510 } 2511 } 2512 2513 private void performDraw() { 2514 if (mAttachInfo.mDisplayState == Display.STATE_OFF && !mReportNextDraw) { 2515 return; 2516 } 2517 2518 final boolean fullRedrawNeeded = mFullRedrawNeeded; 2519 mFullRedrawNeeded = false; 2520 2521 mIsDrawing = true; 2522 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "draw"); 2523 try { 2524 draw(fullRedrawNeeded); 2525 } finally { 2526 mIsDrawing = false; 2527 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2528 } 2529 2530 // For whatever reason we didn't create a HardwareRenderer, end any 2531 // hardware animations that are now dangling 2532 if (mAttachInfo.mPendingAnimatingRenderNodes != null) { 2533 final int count = mAttachInfo.mPendingAnimatingRenderNodes.size(); 2534 for (int i = 0; i < count; i++) { 2535 mAttachInfo.mPendingAnimatingRenderNodes.get(i).endAllAnimators(); 2536 } 2537 mAttachInfo.mPendingAnimatingRenderNodes.clear(); 2538 } 2539 2540 if (mReportNextDraw) { 2541 mReportNextDraw = false; 2542 2543 // if we're using multi-thread renderer, wait for the window frame draws 2544 if (mWindowDrawCountDown != null) { 2545 try { 2546 mWindowDrawCountDown.await(); 2547 } catch (InterruptedException e) { 2548 Log.e(mTag, "Window redraw count down interruped!"); 2549 } 2550 mWindowDrawCountDown = null; 2551 } 2552 2553 if (mAttachInfo.mHardwareRenderer != null) { 2554 mAttachInfo.mHardwareRenderer.fence(); 2555 } 2556 2557 if (LOCAL_LOGV) { 2558 Log.v(mTag, "FINISHED DRAWING: " + mWindowAttributes.getTitle()); 2559 } 2560 if (mSurfaceHolder != null && mSurface.isValid()) { 2561 mSurfaceHolderCallback.surfaceRedrawNeeded(mSurfaceHolder); 2562 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 2563 if (callbacks != null) { 2564 for (SurfaceHolder.Callback c : callbacks) { 2565 if (c instanceof SurfaceHolder.Callback2) { 2566 ((SurfaceHolder.Callback2)c).surfaceRedrawNeeded(mSurfaceHolder); 2567 } 2568 } 2569 } 2570 } 2571 try { 2572 mWindowSession.finishDrawing(mWindow); 2573 } catch (RemoteException e) { 2574 } 2575 } 2576 } 2577 2578 private void draw(boolean fullRedrawNeeded) { 2579 Surface surface = mSurface; 2580 if (!surface.isValid()) { 2581 return; 2582 } 2583 2584 if (DEBUG_FPS) { 2585 trackFPS(); 2586 } 2587 2588 if (!sFirstDrawComplete) { 2589 synchronized (sFirstDrawHandlers) { 2590 sFirstDrawComplete = true; 2591 final int count = sFirstDrawHandlers.size(); 2592 for (int i = 0; i< count; i++) { 2593 mHandler.post(sFirstDrawHandlers.get(i)); 2594 } 2595 } 2596 } 2597 2598 scrollToRectOrFocus(null, false); 2599 2600 if (mAttachInfo.mViewScrollChanged) { 2601 mAttachInfo.mViewScrollChanged = false; 2602 mAttachInfo.mTreeObserver.dispatchOnScrollChanged(); 2603 } 2604 2605 boolean animating = mScroller != null && mScroller.computeScrollOffset(); 2606 final int curScrollY; 2607 if (animating) { 2608 curScrollY = mScroller.getCurrY(); 2609 } else { 2610 curScrollY = mScrollY; 2611 } 2612 if (mCurScrollY != curScrollY) { 2613 mCurScrollY = curScrollY; 2614 fullRedrawNeeded = true; 2615 if (mView instanceof RootViewSurfaceTaker) { 2616 ((RootViewSurfaceTaker) mView).onRootViewScrollYChanged(mCurScrollY); 2617 } 2618 } 2619 2620 final float appScale = mAttachInfo.mApplicationScale; 2621 final boolean scalingRequired = mAttachInfo.mScalingRequired; 2622 2623 int resizeAlpha = 0; 2624 2625 final Rect dirty = mDirty; 2626 if (mSurfaceHolder != null) { 2627 // The app owns the surface, we won't draw. 2628 dirty.setEmpty(); 2629 if (animating && mScroller != null) { 2630 mScroller.abortAnimation(); 2631 } 2632 return; 2633 } 2634 2635 if (fullRedrawNeeded) { 2636 mAttachInfo.mIgnoreDirtyState = true; 2637 dirty.set(0, 0, (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 2638 } 2639 2640 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2641 Log.v(mTag, "Draw " + mView + "/" 2642 + mWindowAttributes.getTitle() 2643 + ": dirty={" + dirty.left + "," + dirty.top 2644 + "," + dirty.right + "," + dirty.bottom + "} surface=" 2645 + surface + " surface.isValid()=" + surface.isValid() + ", appScale:" + 2646 appScale + ", width=" + mWidth + ", height=" + mHeight); 2647 } 2648 2649 mAttachInfo.mTreeObserver.dispatchOnDraw(); 2650 2651 int xOffset = -mCanvasOffsetX; 2652 int yOffset = -mCanvasOffsetY + curScrollY; 2653 final WindowManager.LayoutParams params = mWindowAttributes; 2654 final Rect surfaceInsets = params != null ? params.surfaceInsets : null; 2655 if (surfaceInsets != null) { 2656 xOffset -= surfaceInsets.left; 2657 yOffset -= surfaceInsets.top; 2658 2659 // Offset dirty rect for surface insets. 2660 dirty.offset(surfaceInsets.left, surfaceInsets.right); 2661 } 2662 2663 boolean accessibilityFocusDirty = false; 2664 final Drawable drawable = mAttachInfo.mAccessibilityFocusDrawable; 2665 if (drawable != null) { 2666 final Rect bounds = mAttachInfo.mTmpInvalRect; 2667 final boolean hasFocus = getAccessibilityFocusedRect(bounds); 2668 if (!hasFocus) { 2669 bounds.setEmpty(); 2670 } 2671 if (!bounds.equals(drawable.getBounds())) { 2672 accessibilityFocusDirty = true; 2673 } 2674 } 2675 2676 mAttachInfo.mDrawingTime = 2677 mChoreographer.getFrameTimeNanos() / TimeUtils.NANOS_PER_MS; 2678 2679 if (!dirty.isEmpty() || mIsAnimating || accessibilityFocusDirty) { 2680 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled()) { 2681 // If accessibility focus moved, always invalidate the root. 2682 boolean invalidateRoot = accessibilityFocusDirty || mInvalidateRootRequested; 2683 mInvalidateRootRequested = false; 2684 2685 // Draw with hardware renderer. 2686 mIsAnimating = false; 2687 2688 if (mHardwareYOffset != yOffset || mHardwareXOffset != xOffset) { 2689 mHardwareYOffset = yOffset; 2690 mHardwareXOffset = xOffset; 2691 invalidateRoot = true; 2692 } 2693 2694 if (invalidateRoot) { 2695 mAttachInfo.mHardwareRenderer.invalidateRoot(); 2696 } 2697 2698 dirty.setEmpty(); 2699 2700 // Stage the content drawn size now. It will be transferred to the renderer 2701 // shortly before the draw commands get send to the renderer. 2702 final boolean updated = updateContentDrawBounds(); 2703 2704 mAttachInfo.mHardwareRenderer.draw(mView, mAttachInfo, this); 2705 2706 if (updated) { 2707 requestDrawWindow(); 2708 } 2709 } else { 2710 // If we get here with a disabled & requested hardware renderer, something went 2711 // wrong (an invalidate posted right before we destroyed the hardware surface 2712 // for instance) so we should just bail out. Locking the surface with software 2713 // rendering at this point would lock it forever and prevent hardware renderer 2714 // from doing its job when it comes back. 2715 // Before we request a new frame we must however attempt to reinitiliaze the 2716 // hardware renderer if it's in requested state. This would happen after an 2717 // eglTerminate() for instance. 2718 if (mAttachInfo.mHardwareRenderer != null && 2719 !mAttachInfo.mHardwareRenderer.isEnabled() && 2720 mAttachInfo.mHardwareRenderer.isRequested()) { 2721 2722 try { 2723 mAttachInfo.mHardwareRenderer.initializeIfNeeded( 2724 mWidth, mHeight, mAttachInfo, mSurface, surfaceInsets); 2725 } catch (OutOfResourcesException e) { 2726 handleOutOfResourcesException(e); 2727 return; 2728 } 2729 2730 mFullRedrawNeeded = true; 2731 scheduleTraversals(); 2732 return; 2733 } 2734 2735 if (!drawSoftware(surface, mAttachInfo, xOffset, yOffset, scalingRequired, dirty)) { 2736 return; 2737 } 2738 } 2739 } 2740 2741 if (animating) { 2742 mFullRedrawNeeded = true; 2743 scheduleTraversals(); 2744 } 2745 } 2746 2747 /** 2748 * @return true if drawing was successful, false if an error occurred 2749 */ 2750 private boolean drawSoftware(Surface surface, AttachInfo attachInfo, int xoff, int yoff, 2751 boolean scalingRequired, Rect dirty) { 2752 2753 // Draw with software renderer. 2754 final Canvas canvas; 2755 try { 2756 final int left = dirty.left; 2757 final int top = dirty.top; 2758 final int right = dirty.right; 2759 final int bottom = dirty.bottom; 2760 2761 canvas = mSurface.lockCanvas(dirty); 2762 2763 // The dirty rectangle can be modified by Surface.lockCanvas() 2764 //noinspection ConstantConditions 2765 if (left != dirty.left || top != dirty.top || right != dirty.right 2766 || bottom != dirty.bottom) { 2767 attachInfo.mIgnoreDirtyState = true; 2768 } 2769 2770 // TODO: Do this in native 2771 canvas.setDensity(mDensity); 2772 } catch (Surface.OutOfResourcesException e) { 2773 handleOutOfResourcesException(e); 2774 return false; 2775 } catch (IllegalArgumentException e) { 2776 Log.e(mTag, "Could not lock surface", e); 2777 // Don't assume this is due to out of memory, it could be 2778 // something else, and if it is something else then we could 2779 // kill stuff (or ourself) for no reason. 2780 mLayoutRequested = true; // ask wm for a new surface next time. 2781 return false; 2782 } 2783 2784 try { 2785 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2786 Log.v(mTag, "Surface " + surface + " drawing to bitmap w=" 2787 + canvas.getWidth() + ", h=" + canvas.getHeight()); 2788 //canvas.drawARGB(255, 255, 0, 0); 2789 } 2790 2791 // If this bitmap's format includes an alpha channel, we 2792 // need to clear it before drawing so that the child will 2793 // properly re-composite its drawing on a transparent 2794 // background. This automatically respects the clip/dirty region 2795 // or 2796 // If we are applying an offset, we need to clear the area 2797 // where the offset doesn't appear to avoid having garbage 2798 // left in the blank areas. 2799 if (!canvas.isOpaque() || yoff != 0 || xoff != 0) { 2800 canvas.drawColor(0, PorterDuff.Mode.CLEAR); 2801 } 2802 2803 dirty.setEmpty(); 2804 mIsAnimating = false; 2805 mView.mPrivateFlags |= View.PFLAG_DRAWN; 2806 2807 if (DEBUG_DRAW) { 2808 Context cxt = mView.getContext(); 2809 Log.i(mTag, "Drawing: package:" + cxt.getPackageName() + 2810 ", metrics=" + cxt.getResources().getDisplayMetrics() + 2811 ", compatibilityInfo=" + cxt.getResources().getCompatibilityInfo()); 2812 } 2813 try { 2814 canvas.translate(-xoff, -yoff); 2815 if (mTranslator != null) { 2816 mTranslator.translateCanvas(canvas); 2817 } 2818 canvas.setScreenDensity(scalingRequired ? mNoncompatDensity : 0); 2819 attachInfo.mSetIgnoreDirtyState = false; 2820 2821 mView.draw(canvas); 2822 2823 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2824 } finally { 2825 if (!attachInfo.mSetIgnoreDirtyState) { 2826 // Only clear the flag if it was not set during the mView.draw() call 2827 attachInfo.mIgnoreDirtyState = false; 2828 } 2829 } 2830 } finally { 2831 try { 2832 surface.unlockCanvasAndPost(canvas); 2833 } catch (IllegalArgumentException e) { 2834 Log.e(mTag, "Could not unlock surface", e); 2835 mLayoutRequested = true; // ask wm for a new surface next time. 2836 //noinspection ReturnInsideFinallyBlock 2837 return false; 2838 } 2839 2840 if (LOCAL_LOGV) { 2841 Log.v(mTag, "Surface " + surface + " unlockCanvasAndPost"); 2842 } 2843 } 2844 return true; 2845 } 2846 2847 /** 2848 * We want to draw a highlight around the current accessibility focused. 2849 * Since adding a style for all possible view is not a viable option we 2850 * have this specialized drawing method. 2851 * 2852 * Note: We are doing this here to be able to draw the highlight for 2853 * virtual views in addition to real ones. 2854 * 2855 * @param canvas The canvas on which to draw. 2856 */ 2857 private void drawAccessibilityFocusedDrawableIfNeeded(Canvas canvas) { 2858 final Rect bounds = mAttachInfo.mTmpInvalRect; 2859 if (getAccessibilityFocusedRect(bounds)) { 2860 final Drawable drawable = getAccessibilityFocusedDrawable(); 2861 if (drawable != null) { 2862 drawable.setBounds(bounds); 2863 drawable.draw(canvas); 2864 } 2865 } else if (mAttachInfo.mAccessibilityFocusDrawable != null) { 2866 mAttachInfo.mAccessibilityFocusDrawable.setBounds(0, 0, 0, 0); 2867 } 2868 } 2869 2870 private boolean getAccessibilityFocusedRect(Rect bounds) { 2871 final AccessibilityManager manager = AccessibilityManager.getInstance(mView.mContext); 2872 if (!manager.isEnabled() || !manager.isTouchExplorationEnabled()) { 2873 return false; 2874 } 2875 2876 final View host = mAccessibilityFocusedHost; 2877 if (host == null || host.mAttachInfo == null) { 2878 return false; 2879 } 2880 2881 final AccessibilityNodeProvider provider = host.getAccessibilityNodeProvider(); 2882 if (provider == null) { 2883 host.getBoundsOnScreen(bounds, true); 2884 } else if (mAccessibilityFocusedVirtualView != null) { 2885 mAccessibilityFocusedVirtualView.getBoundsInScreen(bounds); 2886 } else { 2887 return false; 2888 } 2889 2890 // Transform the rect into window-relative coordinates. 2891 final AttachInfo attachInfo = mAttachInfo; 2892 bounds.offset(0, attachInfo.mViewRootImpl.mScrollY); 2893 bounds.offset(-attachInfo.mWindowLeft, -attachInfo.mWindowTop); 2894 if (!bounds.intersect(0, 0, attachInfo.mViewRootImpl.mWidth, 2895 attachInfo.mViewRootImpl.mHeight)) { 2896 // If no intersection, set bounds to empty. 2897 bounds.setEmpty(); 2898 } 2899 return !bounds.isEmpty(); 2900 } 2901 2902 private Drawable getAccessibilityFocusedDrawable() { 2903 // Lazily load the accessibility focus drawable. 2904 if (mAttachInfo.mAccessibilityFocusDrawable == null) { 2905 final TypedValue value = new TypedValue(); 2906 final boolean resolved = mView.mContext.getTheme().resolveAttribute( 2907 R.attr.accessibilityFocusedDrawable, value, true); 2908 if (resolved) { 2909 mAttachInfo.mAccessibilityFocusDrawable = 2910 mView.mContext.getDrawable(value.resourceId); 2911 } 2912 } 2913 return mAttachInfo.mAccessibilityFocusDrawable; 2914 } 2915 2916 /** 2917 * Requests that the root render node is invalidated next time we perform a draw, such that 2918 * {@link WindowCallbacks#onPostDraw} gets called. 2919 */ 2920 public void requestInvalidateRootRenderNode() { 2921 mInvalidateRootRequested = true; 2922 } 2923 2924 boolean scrollToRectOrFocus(Rect rectangle, boolean immediate) { 2925 final Rect ci = mAttachInfo.mContentInsets; 2926 final Rect vi = mAttachInfo.mVisibleInsets; 2927 int scrollY = 0; 2928 boolean handled = false; 2929 2930 if (vi.left > ci.left || vi.top > ci.top 2931 || vi.right > ci.right || vi.bottom > ci.bottom) { 2932 // We'll assume that we aren't going to change the scroll 2933 // offset, since we want to avoid that unless it is actually 2934 // going to make the focus visible... otherwise we scroll 2935 // all over the place. 2936 scrollY = mScrollY; 2937 // We can be called for two different situations: during a draw, 2938 // to update the scroll position if the focus has changed (in which 2939 // case 'rectangle' is null), or in response to a 2940 // requestChildRectangleOnScreen() call (in which case 'rectangle' 2941 // is non-null and we just want to scroll to whatever that 2942 // rectangle is). 2943 final View focus = mView.findFocus(); 2944 if (focus == null) { 2945 return false; 2946 } 2947 View lastScrolledFocus = (mLastScrolledFocus != null) ? mLastScrolledFocus.get() : null; 2948 if (focus != lastScrolledFocus) { 2949 // If the focus has changed, then ignore any requests to scroll 2950 // to a rectangle; first we want to make sure the entire focus 2951 // view is visible. 2952 rectangle = null; 2953 } 2954 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "Eval scroll: focus=" + focus 2955 + " rectangle=" + rectangle + " ci=" + ci 2956 + " vi=" + vi); 2957 if (focus == lastScrolledFocus && !mScrollMayChange && rectangle == null) { 2958 // Optimization: if the focus hasn't changed since last 2959 // time, and no layout has happened, then just leave things 2960 // as they are. 2961 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "Keeping scroll y=" 2962 + mScrollY + " vi=" + vi.toShortString()); 2963 } else { 2964 // We need to determine if the currently focused view is 2965 // within the visible part of the window and, if not, apply 2966 // a pan so it can be seen. 2967 mLastScrolledFocus = new WeakReference<View>(focus); 2968 mScrollMayChange = false; 2969 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "Need to scroll?"); 2970 // Try to find the rectangle from the focus view. 2971 if (focus.getGlobalVisibleRect(mVisRect, null)) { 2972 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "Root w=" 2973 + mView.getWidth() + " h=" + mView.getHeight() 2974 + " ci=" + ci.toShortString() 2975 + " vi=" + vi.toShortString()); 2976 if (rectangle == null) { 2977 focus.getFocusedRect(mTempRect); 2978 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "Focus " + focus 2979 + ": focusRect=" + mTempRect.toShortString()); 2980 if (mView instanceof ViewGroup) { 2981 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 2982 focus, mTempRect); 2983 } 2984 if (DEBUG_INPUT_RESIZE) Log.v(mTag, 2985 "Focus in window: focusRect=" 2986 + mTempRect.toShortString() 2987 + " visRect=" + mVisRect.toShortString()); 2988 } else { 2989 mTempRect.set(rectangle); 2990 if (DEBUG_INPUT_RESIZE) Log.v(mTag, 2991 "Request scroll to rect: " 2992 + mTempRect.toShortString() 2993 + " visRect=" + mVisRect.toShortString()); 2994 } 2995 if (mTempRect.intersect(mVisRect)) { 2996 if (DEBUG_INPUT_RESIZE) Log.v(mTag, 2997 "Focus window visible rect: " 2998 + mTempRect.toShortString()); 2999 if (mTempRect.height() > 3000 (mView.getHeight()-vi.top-vi.bottom)) { 3001 // If the focus simply is not going to fit, then 3002 // best is probably just to leave things as-is. 3003 if (DEBUG_INPUT_RESIZE) Log.v(mTag, 3004 "Too tall; leaving scrollY=" + scrollY); 3005 } else if ((mTempRect.top-scrollY) < vi.top) { 3006 scrollY -= vi.top - (mTempRect.top-scrollY); 3007 if (DEBUG_INPUT_RESIZE) Log.v(mTag, 3008 "Top covered; scrollY=" + scrollY); 3009 } else if ((mTempRect.bottom-scrollY) 3010 > (mView.getHeight()-vi.bottom)) { 3011 scrollY += (mTempRect.bottom-scrollY) 3012 - (mView.getHeight()-vi.bottom); 3013 if (DEBUG_INPUT_RESIZE) Log.v(mTag, 3014 "Bottom covered; scrollY=" + scrollY); 3015 } 3016 handled = true; 3017 } 3018 } 3019 } 3020 } 3021 3022 if (scrollY != mScrollY) { 3023 if (DEBUG_INPUT_RESIZE) Log.v(mTag, "Pan scroll changed: old=" 3024 + mScrollY + " , new=" + scrollY); 3025 if (!immediate) { 3026 if (mScroller == null) { 3027 mScroller = new Scroller(mView.getContext()); 3028 } 3029 mScroller.startScroll(0, mScrollY, 0, scrollY-mScrollY); 3030 } else if (mScroller != null) { 3031 mScroller.abortAnimation(); 3032 } 3033 mScrollY = scrollY; 3034 } 3035 3036 return handled; 3037 } 3038 3039 /** 3040 * @hide 3041 */ 3042 public View getAccessibilityFocusedHost() { 3043 return mAccessibilityFocusedHost; 3044 } 3045 3046 /** 3047 * @hide 3048 */ 3049 public AccessibilityNodeInfo getAccessibilityFocusedVirtualView() { 3050 return mAccessibilityFocusedVirtualView; 3051 } 3052 3053 void setAccessibilityFocus(View view, AccessibilityNodeInfo node) { 3054 // If we have a virtual view with accessibility focus we need 3055 // to clear the focus and invalidate the virtual view bounds. 3056 if (mAccessibilityFocusedVirtualView != null) { 3057 3058 AccessibilityNodeInfo focusNode = mAccessibilityFocusedVirtualView; 3059 View focusHost = mAccessibilityFocusedHost; 3060 3061 // Wipe the state of the current accessibility focus since 3062 // the call into the provider to clear accessibility focus 3063 // will fire an accessibility event which will end up calling 3064 // this method and we want to have clean state when this 3065 // invocation happens. 3066 mAccessibilityFocusedHost = null; 3067 mAccessibilityFocusedVirtualView = null; 3068 3069 // Clear accessibility focus on the host after clearing state since 3070 // this method may be reentrant. 3071 focusHost.clearAccessibilityFocusNoCallbacks(); 3072 3073 AccessibilityNodeProvider provider = focusHost.getAccessibilityNodeProvider(); 3074 if (provider != null) { 3075 // Invalidate the area of the cleared accessibility focus. 3076 focusNode.getBoundsInParent(mTempRect); 3077 focusHost.invalidate(mTempRect); 3078 // Clear accessibility focus in the virtual node. 3079 final int virtualNodeId = AccessibilityNodeInfo.getVirtualDescendantId( 3080 focusNode.getSourceNodeId()); 3081 provider.performAction(virtualNodeId, 3082 AccessibilityNodeInfo.ACTION_CLEAR_ACCESSIBILITY_FOCUS, null); 3083 } 3084 focusNode.recycle(); 3085 } 3086 if (mAccessibilityFocusedHost != null) { 3087 // Clear accessibility focus in the view. 3088 mAccessibilityFocusedHost.clearAccessibilityFocusNoCallbacks(); 3089 } 3090 3091 // Set the new focus host and node. 3092 mAccessibilityFocusedHost = view; 3093 mAccessibilityFocusedVirtualView = node; 3094 3095 if (mAttachInfo.mHardwareRenderer != null) { 3096 mAttachInfo.mHardwareRenderer.invalidateRoot(); 3097 } 3098 } 3099 3100 void setPointerCapture(View view) { 3101 if (!mAttachInfo.mHasWindowFocus) { 3102 Log.w(mTag, "Can't set capture if it's not focused."); 3103 return; 3104 } 3105 if (mCapturingView == view) { 3106 return; 3107 } 3108 mCapturingView = view; 3109 InputManager.getInstance().setPointerIconDetached(true); 3110 } 3111 3112 void releasePointerCapture(View view) { 3113 if (mCapturingView != view || mCapturingView == null) { 3114 return; 3115 } 3116 3117 mCapturingView = null; 3118 InputManager.getInstance().setPointerIconDetached(false); 3119 } 3120 3121 boolean hasPointerCapture(View view) { 3122 return view != null && mCapturingView == view; 3123 } 3124 3125 @Override 3126 public void requestChildFocus(View child, View focused) { 3127 if (DEBUG_INPUT_RESIZE) { 3128 Log.v(mTag, "Request child focus: focus now " + focused); 3129 } 3130 checkThread(); 3131 scheduleTraversals(); 3132 } 3133 3134 @Override 3135 public void clearChildFocus(View child) { 3136 if (DEBUG_INPUT_RESIZE) { 3137 Log.v(mTag, "Clearing child focus"); 3138 } 3139 checkThread(); 3140 scheduleTraversals(); 3141 } 3142 3143 @Override 3144 public ViewParent getParentForAccessibility() { 3145 return null; 3146 } 3147 3148 @Override 3149 public void focusableViewAvailable(View v) { 3150 checkThread(); 3151 if (mView != null) { 3152 if (!mView.hasFocus()) { 3153 v.requestFocus(); 3154 } else { 3155 // the one case where will transfer focus away from the current one 3156 // is if the current view is a view group that prefers to give focus 3157 // to its children first AND the view is a descendant of it. 3158 View focused = mView.findFocus(); 3159 if (focused instanceof ViewGroup) { 3160 ViewGroup group = (ViewGroup) focused; 3161 if (group.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 3162 && isViewDescendantOf(v, focused)) { 3163 v.requestFocus(); 3164 } 3165 } 3166 } 3167 } 3168 } 3169 3170 @Override 3171 public void recomputeViewAttributes(View child) { 3172 checkThread(); 3173 if (mView == child) { 3174 mAttachInfo.mRecomputeGlobalAttributes = true; 3175 if (!mWillDrawSoon) { 3176 scheduleTraversals(); 3177 } 3178 } 3179 } 3180 3181 void dispatchDetachedFromWindow() { 3182 if (mView != null && mView.mAttachInfo != null) { 3183 mAttachInfo.mTreeObserver.dispatchOnWindowAttachedChange(false); 3184 mView.dispatchDetachedFromWindow(); 3185 } 3186 3187 mAccessibilityInteractionConnectionManager.ensureNoConnection(); 3188 mAccessibilityManager.removeAccessibilityStateChangeListener( 3189 mAccessibilityInteractionConnectionManager); 3190 mAccessibilityManager.removeHighTextContrastStateChangeListener( 3191 mHighContrastTextManager); 3192 removeSendWindowContentChangedCallback(); 3193 3194 destroyHardwareRenderer(); 3195 3196 setAccessibilityFocus(null, null); 3197 3198 mView.assignParent(null); 3199 mView = null; 3200 mAttachInfo.mRootView = null; 3201 3202 if (mCapturingView != null) { 3203 releasePointerCapture(mCapturingView); 3204 } 3205 3206 mSurface.release(); 3207 3208 if (mInputQueueCallback != null && mInputQueue != null) { 3209 mInputQueueCallback.onInputQueueDestroyed(mInputQueue); 3210 mInputQueue.dispose(); 3211 mInputQueueCallback = null; 3212 mInputQueue = null; 3213 } 3214 if (mInputEventReceiver != null) { 3215 mInputEventReceiver.dispose(); 3216 mInputEventReceiver = null; 3217 } 3218 try { 3219 mWindowSession.remove(mWindow); 3220 } catch (RemoteException e) { 3221 } 3222 3223 // Dispose the input channel after removing the window so the Window Manager 3224 // doesn't interpret the input channel being closed as an abnormal termination. 3225 if (mInputChannel != null) { 3226 mInputChannel.dispose(); 3227 mInputChannel = null; 3228 } 3229 3230 mDisplayManager.unregisterDisplayListener(mDisplayListener); 3231 3232 unscheduleTraversals(); 3233 } 3234 3235 void updateConfiguration(Configuration config, boolean force) { 3236 if (DEBUG_CONFIGURATION) Log.v(mTag, 3237 "Applying new config to window " 3238 + mWindowAttributes.getTitle() 3239 + ": " + config); 3240 3241 CompatibilityInfo ci = mDisplayAdjustments.getCompatibilityInfo(); 3242 if (!ci.equals(CompatibilityInfo.DEFAULT_COMPATIBILITY_INFO)) { 3243 config = new Configuration(config); 3244 ci.applyToConfiguration(mNoncompatDensity, config); 3245 } 3246 3247 synchronized (sConfigCallbacks) { 3248 for (int i=sConfigCallbacks.size()-1; i>=0; i--) { 3249 sConfigCallbacks.get(i).onConfigurationChanged(config); 3250 } 3251 } 3252 if (mView != null) { 3253 // At this point the resources have been updated to 3254 // have the most recent config, whatever that is. Use 3255 // the one in them which may be newer. 3256 config = mView.getResources().getConfiguration(); 3257 if (force || mLastConfiguration.diff(config) != 0) { 3258 final int lastLayoutDirection = mLastConfiguration.getLayoutDirection(); 3259 final int currentLayoutDirection = config.getLayoutDirection(); 3260 mLastConfiguration.setTo(config); 3261 if (lastLayoutDirection != currentLayoutDirection && 3262 mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 3263 mView.setLayoutDirection(currentLayoutDirection); 3264 } 3265 mView.dispatchConfigurationChanged(config); 3266 } 3267 } 3268 } 3269 3270 /** 3271 * Return true if child is an ancestor of parent, (or equal to the parent). 3272 */ 3273 public static boolean isViewDescendantOf(View child, View parent) { 3274 if (child == parent) { 3275 return true; 3276 } 3277 3278 final ViewParent theParent = child.getParent(); 3279 return (theParent instanceof ViewGroup) && isViewDescendantOf((View) theParent, parent); 3280 } 3281 3282 private static void forceLayout(View view) { 3283 view.forceLayout(); 3284 if (view instanceof ViewGroup) { 3285 ViewGroup group = (ViewGroup) view; 3286 final int count = group.getChildCount(); 3287 for (int i = 0; i < count; i++) { 3288 forceLayout(group.getChildAt(i)); 3289 } 3290 } 3291 } 3292 3293 private final static int MSG_INVALIDATE = 1; 3294 private final static int MSG_INVALIDATE_RECT = 2; 3295 private final static int MSG_DIE = 3; 3296 private final static int MSG_RESIZED = 4; 3297 private final static int MSG_RESIZED_REPORT = 5; 3298 private final static int MSG_WINDOW_FOCUS_CHANGED = 6; 3299 private final static int MSG_DISPATCH_INPUT_EVENT = 7; 3300 private final static int MSG_DISPATCH_APP_VISIBILITY = 8; 3301 private final static int MSG_DISPATCH_GET_NEW_SURFACE = 9; 3302 private final static int MSG_DISPATCH_KEY_FROM_IME = 11; 3303 private final static int MSG_CHECK_FOCUS = 13; 3304 private final static int MSG_CLOSE_SYSTEM_DIALOGS = 14; 3305 private final static int MSG_DISPATCH_DRAG_EVENT = 15; 3306 private final static int MSG_DISPATCH_DRAG_LOCATION_EVENT = 16; 3307 private final static int MSG_DISPATCH_SYSTEM_UI_VISIBILITY = 17; 3308 private final static int MSG_UPDATE_CONFIGURATION = 18; 3309 private final static int MSG_PROCESS_INPUT_EVENTS = 19; 3310 private final static int MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST = 21; 3311 private final static int MSG_INVALIDATE_WORLD = 22; 3312 private final static int MSG_WINDOW_MOVED = 23; 3313 private final static int MSG_SYNTHESIZE_INPUT_EVENT = 24; 3314 private final static int MSG_DISPATCH_WINDOW_SHOWN = 25; 3315 private final static int MSG_REQUEST_KEYBOARD_SHORTCUTS = 26; 3316 private final static int MSG_UPDATE_POINTER_ICON = 27; 3317 3318 final class ViewRootHandler extends Handler { 3319 @Override 3320 public String getMessageName(Message message) { 3321 switch (message.what) { 3322 case MSG_INVALIDATE: 3323 return "MSG_INVALIDATE"; 3324 case MSG_INVALIDATE_RECT: 3325 return "MSG_INVALIDATE_RECT"; 3326 case MSG_DIE: 3327 return "MSG_DIE"; 3328 case MSG_RESIZED: 3329 return "MSG_RESIZED"; 3330 case MSG_RESIZED_REPORT: 3331 return "MSG_RESIZED_REPORT"; 3332 case MSG_WINDOW_FOCUS_CHANGED: 3333 return "MSG_WINDOW_FOCUS_CHANGED"; 3334 case MSG_DISPATCH_INPUT_EVENT: 3335 return "MSG_DISPATCH_INPUT_EVENT"; 3336 case MSG_DISPATCH_APP_VISIBILITY: 3337 return "MSG_DISPATCH_APP_VISIBILITY"; 3338 case MSG_DISPATCH_GET_NEW_SURFACE: 3339 return "MSG_DISPATCH_GET_NEW_SURFACE"; 3340 case MSG_DISPATCH_KEY_FROM_IME: 3341 return "MSG_DISPATCH_KEY_FROM_IME"; 3342 case MSG_CHECK_FOCUS: 3343 return "MSG_CHECK_FOCUS"; 3344 case MSG_CLOSE_SYSTEM_DIALOGS: 3345 return "MSG_CLOSE_SYSTEM_DIALOGS"; 3346 case MSG_DISPATCH_DRAG_EVENT: 3347 return "MSG_DISPATCH_DRAG_EVENT"; 3348 case MSG_DISPATCH_DRAG_LOCATION_EVENT: 3349 return "MSG_DISPATCH_DRAG_LOCATION_EVENT"; 3350 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: 3351 return "MSG_DISPATCH_SYSTEM_UI_VISIBILITY"; 3352 case MSG_UPDATE_CONFIGURATION: 3353 return "MSG_UPDATE_CONFIGURATION"; 3354 case MSG_PROCESS_INPUT_EVENTS: 3355 return "MSG_PROCESS_INPUT_EVENTS"; 3356 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: 3357 return "MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST"; 3358 case MSG_WINDOW_MOVED: 3359 return "MSG_WINDOW_MOVED"; 3360 case MSG_SYNTHESIZE_INPUT_EVENT: 3361 return "MSG_SYNTHESIZE_INPUT_EVENT"; 3362 case MSG_DISPATCH_WINDOW_SHOWN: 3363 return "MSG_DISPATCH_WINDOW_SHOWN"; 3364 case MSG_UPDATE_POINTER_ICON: 3365 return "MSG_UPDATE_POINTER_ICON"; 3366 } 3367 return super.getMessageName(message); 3368 } 3369 3370 @Override 3371 public void handleMessage(Message msg) { 3372 switch (msg.what) { 3373 case MSG_INVALIDATE: 3374 ((View) msg.obj).invalidate(); 3375 break; 3376 case MSG_INVALIDATE_RECT: 3377 final View.AttachInfo.InvalidateInfo info = (View.AttachInfo.InvalidateInfo) msg.obj; 3378 info.target.invalidate(info.left, info.top, info.right, info.bottom); 3379 info.recycle(); 3380 break; 3381 case MSG_PROCESS_INPUT_EVENTS: 3382 mProcessInputEventsScheduled = false; 3383 doProcessInputEvents(); 3384 break; 3385 case MSG_DISPATCH_APP_VISIBILITY: 3386 handleAppVisibility(msg.arg1 != 0); 3387 break; 3388 case MSG_DISPATCH_GET_NEW_SURFACE: 3389 handleGetNewSurface(); 3390 break; 3391 case MSG_RESIZED: { 3392 // Recycled in the fall through... 3393 SomeArgs args = (SomeArgs) msg.obj; 3394 if (mWinFrame.equals(args.arg1) 3395 && mPendingOverscanInsets.equals(args.arg5) 3396 && mPendingContentInsets.equals(args.arg2) 3397 && mPendingStableInsets.equals(args.arg6) 3398 && mPendingVisibleInsets.equals(args.arg3) 3399 && mPendingOutsets.equals(args.arg7) 3400 && mPendingBackDropFrame.equals(args.arg8) 3401 && args.arg4 == null 3402 && args.argi1 == 0) { 3403 break; 3404 } 3405 } // fall through... 3406 case MSG_RESIZED_REPORT: 3407 if (mAdded) { 3408 SomeArgs args = (SomeArgs) msg.obj; 3409 3410 Configuration config = (Configuration) args.arg4; 3411 if (config != null) { 3412 updateConfiguration(config, false); 3413 } 3414 3415 mWinFrame.set((Rect) args.arg1); 3416 mPendingOverscanInsets.set((Rect) args.arg5); 3417 mPendingContentInsets.set((Rect) args.arg2); 3418 mPendingStableInsets.set((Rect) args.arg6); 3419 mPendingVisibleInsets.set((Rect) args.arg3); 3420 mPendingOutsets.set((Rect) args.arg7); 3421 mPendingBackDropFrame.set((Rect) args.arg8); 3422 mForceNextWindowRelayout = args.argi1 != 0; 3423 mPendingAlwaysConsumeNavBar = args.argi2 != 0; 3424 3425 args.recycle(); 3426 3427 if (msg.what == MSG_RESIZED_REPORT) { 3428 mReportNextDraw = true; 3429 } 3430 3431 if (mView != null) { 3432 forceLayout(mView); 3433 } 3434 3435 requestLayout(); 3436 } 3437 break; 3438 case MSG_WINDOW_MOVED: 3439 if (mAdded) { 3440 final int w = mWinFrame.width(); 3441 final int h = mWinFrame.height(); 3442 final int l = msg.arg1; 3443 final int t = msg.arg2; 3444 mWinFrame.left = l; 3445 mWinFrame.right = l + w; 3446 mWinFrame.top = t; 3447 mWinFrame.bottom = t + h; 3448 3449 mPendingBackDropFrame.set(mWinFrame); 3450 3451 // Suppress layouts during resizing - a correct layout will happen when resizing 3452 // is done, and this just increases system load. 3453 boolean isDockedDivider = mWindowAttributes.type == TYPE_DOCK_DIVIDER; 3454 boolean suppress = (mDragResizing && mResizeMode == RESIZE_MODE_DOCKED_DIVIDER) 3455 || isDockedDivider; 3456 if (!suppress) { 3457 if (mView != null) { 3458 forceLayout(mView); 3459 } 3460 requestLayout(); 3461 } else { 3462 maybeHandleWindowMove(mWinFrame); 3463 } 3464 } 3465 break; 3466 case MSG_WINDOW_FOCUS_CHANGED: { 3467 if (mAdded) { 3468 boolean hasWindowFocus = msg.arg1 != 0; 3469 mAttachInfo.mHasWindowFocus = hasWindowFocus; 3470 3471 profileRendering(hasWindowFocus); 3472 3473 if (hasWindowFocus) { 3474 boolean inTouchMode = msg.arg2 != 0; 3475 ensureTouchModeLocally(inTouchMode); 3476 3477 if (mAttachInfo.mHardwareRenderer != null && mSurface.isValid()){ 3478 mFullRedrawNeeded = true; 3479 try { 3480 final WindowManager.LayoutParams lp = mWindowAttributes; 3481 final Rect surfaceInsets = lp != null ? lp.surfaceInsets : null; 3482 mAttachInfo.mHardwareRenderer.initializeIfNeeded( 3483 mWidth, mHeight, mAttachInfo, mSurface, surfaceInsets); 3484 } catch (OutOfResourcesException e) { 3485 Log.e(mTag, "OutOfResourcesException locking surface", e); 3486 try { 3487 if (!mWindowSession.outOfMemory(mWindow)) { 3488 Slog.w(mTag, "No processes killed for memory; killing self"); 3489 Process.killProcess(Process.myPid()); 3490 } 3491 } catch (RemoteException ex) { 3492 } 3493 // Retry in a bit. 3494 sendMessageDelayed(obtainMessage(msg.what, msg.arg1, msg.arg2), 500); 3495 return; 3496 } 3497 } 3498 } 3499 3500 mLastWasImTarget = WindowManager.LayoutParams 3501 .mayUseInputMethod(mWindowAttributes.flags); 3502 3503 InputMethodManager imm = InputMethodManager.peekInstance(); 3504 if (imm != null && mLastWasImTarget && !isInLocalFocusMode()) { 3505 imm.onPreWindowFocus(mView, hasWindowFocus); 3506 } 3507 if (mView != null) { 3508 mAttachInfo.mKeyDispatchState.reset(); 3509 mView.dispatchWindowFocusChanged(hasWindowFocus); 3510 mAttachInfo.mTreeObserver.dispatchOnWindowFocusChange(hasWindowFocus); 3511 } 3512 3513 // Note: must be done after the focus change callbacks, 3514 // so all of the view state is set up correctly. 3515 if (hasWindowFocus) { 3516 if (imm != null && mLastWasImTarget && !isInLocalFocusMode()) { 3517 imm.onPostWindowFocus(mView, mView.findFocus(), 3518 mWindowAttributes.softInputMode, 3519 !mHasHadWindowFocus, mWindowAttributes.flags); 3520 } 3521 // Clear the forward bit. We can just do this directly, since 3522 // the window manager doesn't care about it. 3523 mWindowAttributes.softInputMode &= 3524 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3525 ((WindowManager.LayoutParams)mView.getLayoutParams()) 3526 .softInputMode &= 3527 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3528 mHasHadWindowFocus = true; 3529 } else if (mCapturingView != null) { 3530 releasePointerCapture(mCapturingView); 3531 } 3532 } 3533 } break; 3534 case MSG_DIE: 3535 doDie(); 3536 break; 3537 case MSG_DISPATCH_INPUT_EVENT: { 3538 SomeArgs args = (SomeArgs)msg.obj; 3539 InputEvent event = (InputEvent)args.arg1; 3540 InputEventReceiver receiver = (InputEventReceiver)args.arg2; 3541 enqueueInputEvent(event, receiver, 0, true); 3542 args.recycle(); 3543 } break; 3544 case MSG_SYNTHESIZE_INPUT_EVENT: { 3545 InputEvent event = (InputEvent)msg.obj; 3546 enqueueInputEvent(event, null, QueuedInputEvent.FLAG_UNHANDLED, true); 3547 } break; 3548 case MSG_DISPATCH_KEY_FROM_IME: { 3549 if (LOCAL_LOGV) Log.v( 3550 TAG, "Dispatching key " 3551 + msg.obj + " from IME to " + mView); 3552 KeyEvent event = (KeyEvent)msg.obj; 3553 if ((event.getFlags()&KeyEvent.FLAG_FROM_SYSTEM) != 0) { 3554 // The IME is trying to say this event is from the 3555 // system! Bad bad bad! 3556 //noinspection UnusedAssignment 3557 event = KeyEvent.changeFlags(event, event.getFlags() & 3558 ~KeyEvent.FLAG_FROM_SYSTEM); 3559 } 3560 enqueueInputEvent(event, null, QueuedInputEvent.FLAG_DELIVER_POST_IME, true); 3561 } break; 3562 case MSG_CHECK_FOCUS: { 3563 InputMethodManager imm = InputMethodManager.peekInstance(); 3564 if (imm != null) { 3565 imm.checkFocus(); 3566 } 3567 } break; 3568 case MSG_CLOSE_SYSTEM_DIALOGS: { 3569 if (mView != null) { 3570 mView.onCloseSystemDialogs((String)msg.obj); 3571 } 3572 } break; 3573 case MSG_DISPATCH_DRAG_EVENT: 3574 case MSG_DISPATCH_DRAG_LOCATION_EVENT: { 3575 DragEvent event = (DragEvent)msg.obj; 3576 event.mLocalState = mLocalDragState; // only present when this app called startDrag() 3577 handleDragEvent(event); 3578 } break; 3579 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: { 3580 handleDispatchSystemUiVisibilityChanged((SystemUiVisibilityInfo) msg.obj); 3581 } break; 3582 case MSG_UPDATE_CONFIGURATION: { 3583 Configuration config = (Configuration)msg.obj; 3584 if (config.isOtherSeqNewer(mLastConfiguration)) { 3585 config = mLastConfiguration; 3586 } 3587 updateConfiguration(config, false); 3588 } break; 3589 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: { 3590 setAccessibilityFocus(null, null); 3591 } break; 3592 case MSG_INVALIDATE_WORLD: { 3593 if (mView != null) { 3594 invalidateWorld(mView); 3595 } 3596 } break; 3597 case MSG_DISPATCH_WINDOW_SHOWN: { 3598 handleDispatchWindowShown(); 3599 } break; 3600 case MSG_REQUEST_KEYBOARD_SHORTCUTS: { 3601 final IResultReceiver receiver = (IResultReceiver) msg.obj; 3602 final int deviceId = msg.arg1; 3603 handleRequestKeyboardShortcuts(receiver, deviceId); 3604 } break; 3605 case MSG_UPDATE_POINTER_ICON: { 3606 MotionEvent event = (MotionEvent) msg.obj; 3607 resetPointerIcon(event); 3608 } break; 3609 } 3610 } 3611 } 3612 3613 final ViewRootHandler mHandler = new ViewRootHandler(); 3614 3615 /** 3616 * Something in the current window tells us we need to change the touch mode. For 3617 * example, we are not in touch mode, and the user touches the screen. 3618 * 3619 * If the touch mode has changed, tell the window manager, and handle it locally. 3620 * 3621 * @param inTouchMode Whether we want to be in touch mode. 3622 * @return True if the touch mode changed and focus changed was changed as a result 3623 */ 3624 boolean ensureTouchMode(boolean inTouchMode) { 3625 if (DBG) Log.d("touchmode", "ensureTouchMode(" + inTouchMode + "), current " 3626 + "touch mode is " + mAttachInfo.mInTouchMode); 3627 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3628 3629 // tell the window manager 3630 try { 3631 mWindowSession.setInTouchMode(inTouchMode); 3632 } catch (RemoteException e) { 3633 throw new RuntimeException(e); 3634 } 3635 3636 // handle the change 3637 return ensureTouchModeLocally(inTouchMode); 3638 } 3639 3640 /** 3641 * Ensure that the touch mode for this window is set, and if it is changing, 3642 * take the appropriate action. 3643 * @param inTouchMode Whether we want to be in touch mode. 3644 * @return True if the touch mode changed and focus changed was changed as a result 3645 */ 3646 private boolean ensureTouchModeLocally(boolean inTouchMode) { 3647 if (DBG) Log.d("touchmode", "ensureTouchModeLocally(" + inTouchMode + "), current " 3648 + "touch mode is " + mAttachInfo.mInTouchMode); 3649 3650 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3651 3652 mAttachInfo.mInTouchMode = inTouchMode; 3653 mAttachInfo.mTreeObserver.dispatchOnTouchModeChanged(inTouchMode); 3654 3655 return (inTouchMode) ? enterTouchMode() : leaveTouchMode(); 3656 } 3657 3658 private boolean enterTouchMode() { 3659 if (mView != null && mView.hasFocus()) { 3660 // note: not relying on mFocusedView here because this could 3661 // be when the window is first being added, and mFocused isn't 3662 // set yet. 3663 final View focused = mView.findFocus(); 3664 if (focused != null && !focused.isFocusableInTouchMode()) { 3665 final ViewGroup ancestorToTakeFocus = findAncestorToTakeFocusInTouchMode(focused); 3666 if (ancestorToTakeFocus != null) { 3667 // there is an ancestor that wants focus after its 3668 // descendants that is focusable in touch mode.. give it 3669 // focus 3670 return ancestorToTakeFocus.requestFocus(); 3671 } else { 3672 // There's nothing to focus. Clear and propagate through the 3673 // hierarchy, but don't attempt to place new focus. 3674 focused.clearFocusInternal(null, true, false); 3675 return true; 3676 } 3677 } 3678 } 3679 return false; 3680 } 3681 3682 /** 3683 * Find an ancestor of focused that wants focus after its descendants and is 3684 * focusable in touch mode. 3685 * @param focused The currently focused view. 3686 * @return An appropriate view, or null if no such view exists. 3687 */ 3688 private static ViewGroup findAncestorToTakeFocusInTouchMode(View focused) { 3689 ViewParent parent = focused.getParent(); 3690 while (parent instanceof ViewGroup) { 3691 final ViewGroup vgParent = (ViewGroup) parent; 3692 if (vgParent.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 3693 && vgParent.isFocusableInTouchMode()) { 3694 return vgParent; 3695 } 3696 if (vgParent.isRootNamespace()) { 3697 return null; 3698 } else { 3699 parent = vgParent.getParent(); 3700 } 3701 } 3702 return null; 3703 } 3704 3705 private boolean leaveTouchMode() { 3706 if (mView != null) { 3707 if (mView.hasFocus()) { 3708 View focusedView = mView.findFocus(); 3709 if (!(focusedView instanceof ViewGroup)) { 3710 // some view has focus, let it keep it 3711 return false; 3712 } else if (((ViewGroup) focusedView).getDescendantFocusability() != 3713 ViewGroup.FOCUS_AFTER_DESCENDANTS) { 3714 // some view group has focus, and doesn't prefer its children 3715 // over itself for focus, so let them keep it. 3716 return false; 3717 } 3718 } 3719 3720 // find the best view to give focus to in this brave new non-touch-mode 3721 // world 3722 final View focused = focusSearch(null, View.FOCUS_DOWN); 3723 if (focused != null) { 3724 return focused.requestFocus(View.FOCUS_DOWN); 3725 } 3726 } 3727 return false; 3728 } 3729 3730 /** 3731 * Base class for implementing a stage in the chain of responsibility 3732 * for processing input events. 3733 * <p> 3734 * Events are delivered to the stage by the {@link #deliver} method. The stage 3735 * then has the choice of finishing the event or forwarding it to the next stage. 3736 * </p> 3737 */ 3738 abstract class InputStage { 3739 private final InputStage mNext; 3740 3741 protected static final int FORWARD = 0; 3742 protected static final int FINISH_HANDLED = 1; 3743 protected static final int FINISH_NOT_HANDLED = 2; 3744 3745 /** 3746 * Creates an input stage. 3747 * @param next The next stage to which events should be forwarded. 3748 */ 3749 public InputStage(InputStage next) { 3750 mNext = next; 3751 } 3752 3753 /** 3754 * Delivers an event to be processed. 3755 */ 3756 public final void deliver(QueuedInputEvent q) { 3757 if ((q.mFlags & QueuedInputEvent.FLAG_FINISHED) != 0) { 3758 forward(q); 3759 } else if (shouldDropInputEvent(q)) { 3760 finish(q, false); 3761 } else { 3762 apply(q, onProcess(q)); 3763 } 3764 } 3765 3766 /** 3767 * Marks the the input event as finished then forwards it to the next stage. 3768 */ 3769 protected void finish(QueuedInputEvent q, boolean handled) { 3770 q.mFlags |= QueuedInputEvent.FLAG_FINISHED; 3771 if (handled) { 3772 q.mFlags |= QueuedInputEvent.FLAG_FINISHED_HANDLED; 3773 } 3774 forward(q); 3775 } 3776 3777 /** 3778 * Forwards the event to the next stage. 3779 */ 3780 protected void forward(QueuedInputEvent q) { 3781 onDeliverToNext(q); 3782 } 3783 3784 /** 3785 * Applies a result code from {@link #onProcess} to the specified event. 3786 */ 3787 protected void apply(QueuedInputEvent q, int result) { 3788 if (result == FORWARD) { 3789 forward(q); 3790 } else if (result == FINISH_HANDLED) { 3791 finish(q, true); 3792 } else if (result == FINISH_NOT_HANDLED) { 3793 finish(q, false); 3794 } else { 3795 throw new IllegalArgumentException("Invalid result: " + result); 3796 } 3797 } 3798 3799 /** 3800 * Called when an event is ready to be processed. 3801 * @return A result code indicating how the event was handled. 3802 */ 3803 protected int onProcess(QueuedInputEvent q) { 3804 return FORWARD; 3805 } 3806 3807 /** 3808 * Called when an event is being delivered to the next stage. 3809 */ 3810 protected void onDeliverToNext(QueuedInputEvent q) { 3811 if (DEBUG_INPUT_STAGES) { 3812 Log.v(mTag, "Done with " + getClass().getSimpleName() + ". " + q); 3813 } 3814 if (mNext != null) { 3815 mNext.deliver(q); 3816 } else { 3817 finishInputEvent(q); 3818 } 3819 } 3820 3821 protected boolean shouldDropInputEvent(QueuedInputEvent q) { 3822 if (mView == null || !mAdded) { 3823 Slog.w(mTag, "Dropping event due to root view being removed: " + q.mEvent); 3824 return true; 3825 } else if ((!mAttachInfo.mHasWindowFocus 3826 && !q.mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER)) || mStopped 3827 || (mIsAmbientMode && !q.mEvent.isFromSource(InputDevice.SOURCE_CLASS_BUTTON)) 3828 || (mPausedForTransition && !isBack(q.mEvent))) { 3829 // This is a focus event and the window doesn't currently have input focus or 3830 // has stopped. This could be an event that came back from the previous stage 3831 // but the window has lost focus or stopped in the meantime. 3832 if (isTerminalInputEvent(q.mEvent)) { 3833 // Don't drop terminal input events, however mark them as canceled. 3834 q.mEvent.cancel(); 3835 Slog.w(mTag, "Cancelling event due to no window focus: " + q.mEvent); 3836 return false; 3837 } 3838 3839 // Drop non-terminal input events. 3840 Slog.w(mTag, "Dropping event due to no window focus: " + q.mEvent); 3841 return true; 3842 } 3843 return false; 3844 } 3845 3846 void dump(String prefix, PrintWriter writer) { 3847 if (mNext != null) { 3848 mNext.dump(prefix, writer); 3849 } 3850 } 3851 3852 private boolean isBack(InputEvent event) { 3853 if (event instanceof KeyEvent) { 3854 return ((KeyEvent) event).getKeyCode() == KeyEvent.KEYCODE_BACK; 3855 } else { 3856 return false; 3857 } 3858 } 3859 } 3860 3861 /** 3862 * Base class for implementing an input pipeline stage that supports 3863 * asynchronous and out-of-order processing of input events. 3864 * <p> 3865 * In addition to what a normal input stage can do, an asynchronous 3866 * input stage may also defer an input event that has been delivered to it 3867 * and finish or forward it later. 3868 * </p> 3869 */ 3870 abstract class AsyncInputStage extends InputStage { 3871 private final String mTraceCounter; 3872 3873 private QueuedInputEvent mQueueHead; 3874 private QueuedInputEvent mQueueTail; 3875 private int mQueueLength; 3876 3877 protected static final int DEFER = 3; 3878 3879 /** 3880 * Creates an asynchronous input stage. 3881 * @param next The next stage to which events should be forwarded. 3882 * @param traceCounter The name of a counter to record the size of 3883 * the queue of pending events. 3884 */ 3885 public AsyncInputStage(InputStage next, String traceCounter) { 3886 super(next); 3887 mTraceCounter = traceCounter; 3888 } 3889 3890 /** 3891 * Marks the event as deferred, which is to say that it will be handled 3892 * asynchronously. The caller is responsible for calling {@link #forward} 3893 * or {@link #finish} later when it is done handling the event. 3894 */ 3895 protected void defer(QueuedInputEvent q) { 3896 q.mFlags |= QueuedInputEvent.FLAG_DEFERRED; 3897 enqueue(q); 3898 } 3899 3900 @Override 3901 protected void forward(QueuedInputEvent q) { 3902 // Clear the deferred flag. 3903 q.mFlags &= ~QueuedInputEvent.FLAG_DEFERRED; 3904 3905 // Fast path if the queue is empty. 3906 QueuedInputEvent curr = mQueueHead; 3907 if (curr == null) { 3908 super.forward(q); 3909 return; 3910 } 3911 3912 // Determine whether the event must be serialized behind any others 3913 // before it can be delivered to the next stage. This is done because 3914 // deferred events might be handled out of order by the stage. 3915 final int deviceId = q.mEvent.getDeviceId(); 3916 QueuedInputEvent prev = null; 3917 boolean blocked = false; 3918 while (curr != null && curr != q) { 3919 if (!blocked && deviceId == curr.mEvent.getDeviceId()) { 3920 blocked = true; 3921 } 3922 prev = curr; 3923 curr = curr.mNext; 3924 } 3925 3926 // If the event is blocked, then leave it in the queue to be delivered later. 3927 // Note that the event might not yet be in the queue if it was not previously 3928 // deferred so we will enqueue it if needed. 3929 if (blocked) { 3930 if (curr == null) { 3931 enqueue(q); 3932 } 3933 return; 3934 } 3935 3936 // The event is not blocked. Deliver it immediately. 3937 if (curr != null) { 3938 curr = curr.mNext; 3939 dequeue(q, prev); 3940 } 3941 super.forward(q); 3942 3943 // Dequeuing this event may have unblocked successors. Deliver them. 3944 while (curr != null) { 3945 if (deviceId == curr.mEvent.getDeviceId()) { 3946 if ((curr.mFlags & QueuedInputEvent.FLAG_DEFERRED) != 0) { 3947 break; 3948 } 3949 QueuedInputEvent next = curr.mNext; 3950 dequeue(curr, prev); 3951 super.forward(curr); 3952 curr = next; 3953 } else { 3954 prev = curr; 3955 curr = curr.mNext; 3956 } 3957 } 3958 } 3959 3960 @Override 3961 protected void apply(QueuedInputEvent q, int result) { 3962 if (result == DEFER) { 3963 defer(q); 3964 } else { 3965 super.apply(q, result); 3966 } 3967 } 3968 3969 private void enqueue(QueuedInputEvent q) { 3970 if (mQueueTail == null) { 3971 mQueueHead = q; 3972 mQueueTail = q; 3973 } else { 3974 mQueueTail.mNext = q; 3975 mQueueTail = q; 3976 } 3977 3978 mQueueLength += 1; 3979 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 3980 } 3981 3982 private void dequeue(QueuedInputEvent q, QueuedInputEvent prev) { 3983 if (prev == null) { 3984 mQueueHead = q.mNext; 3985 } else { 3986 prev.mNext = q.mNext; 3987 } 3988 if (mQueueTail == q) { 3989 mQueueTail = prev; 3990 } 3991 q.mNext = null; 3992 3993 mQueueLength -= 1; 3994 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 3995 } 3996 3997 @Override 3998 void dump(String prefix, PrintWriter writer) { 3999 writer.print(prefix); 4000 writer.print(getClass().getName()); 4001 writer.print(": mQueueLength="); 4002 writer.println(mQueueLength); 4003 4004 super.dump(prefix, writer); 4005 } 4006 } 4007 4008 /** 4009 * Delivers pre-ime input events to a native activity. 4010 * Does not support pointer events. 4011 */ 4012 final class NativePreImeInputStage extends AsyncInputStage 4013 implements InputQueue.FinishedInputEventCallback { 4014 public NativePreImeInputStage(InputStage next, String traceCounter) { 4015 super(next, traceCounter); 4016 } 4017 4018 @Override 4019 protected int onProcess(QueuedInputEvent q) { 4020 if (mInputQueue != null && q.mEvent instanceof KeyEvent) { 4021 mInputQueue.sendInputEvent(q.mEvent, q, true, this); 4022 return DEFER; 4023 } 4024 return FORWARD; 4025 } 4026 4027 @Override 4028 public void onFinishedInputEvent(Object token, boolean handled) { 4029 QueuedInputEvent q = (QueuedInputEvent)token; 4030 if (handled) { 4031 finish(q, true); 4032 return; 4033 } 4034 forward(q); 4035 } 4036 } 4037 4038 /** 4039 * Delivers pre-ime input events to the view hierarchy. 4040 * Does not support pointer events. 4041 */ 4042 final class ViewPreImeInputStage extends InputStage { 4043 public ViewPreImeInputStage(InputStage next) { 4044 super(next); 4045 } 4046 4047 @Override 4048 protected int onProcess(QueuedInputEvent q) { 4049 if (q.mEvent instanceof KeyEvent) { 4050 return processKeyEvent(q); 4051 } 4052 return FORWARD; 4053 } 4054 4055 private int processKeyEvent(QueuedInputEvent q) { 4056 final KeyEvent event = (KeyEvent)q.mEvent; 4057 if (mView.dispatchKeyEventPreIme(event)) { 4058 return FINISH_HANDLED; 4059 } 4060 return FORWARD; 4061 } 4062 } 4063 4064 /** 4065 * Delivers input events to the ime. 4066 * Does not support pointer events. 4067 */ 4068 final class ImeInputStage extends AsyncInputStage 4069 implements InputMethodManager.FinishedInputEventCallback { 4070 public ImeInputStage(InputStage next, String traceCounter) { 4071 super(next, traceCounter); 4072 } 4073 4074 @Override 4075 protected int onProcess(QueuedInputEvent q) { 4076 if (mLastWasImTarget && !isInLocalFocusMode()) { 4077 InputMethodManager imm = InputMethodManager.peekInstance(); 4078 if (imm != null) { 4079 final InputEvent event = q.mEvent; 4080 if (DEBUG_IMF) Log.v(mTag, "Sending input event to IME: " + event); 4081 int result = imm.dispatchInputEvent(event, q, this, mHandler); 4082 if (result == InputMethodManager.DISPATCH_HANDLED) { 4083 return FINISH_HANDLED; 4084 } else if (result == InputMethodManager.DISPATCH_NOT_HANDLED) { 4085 // The IME could not handle it, so skip along to the next InputStage 4086 return FORWARD; 4087 } else { 4088 return DEFER; // callback will be invoked later 4089 } 4090 } 4091 } 4092 return FORWARD; 4093 } 4094 4095 @Override 4096 public void onFinishedInputEvent(Object token, boolean handled) { 4097 QueuedInputEvent q = (QueuedInputEvent)token; 4098 if (handled) { 4099 finish(q, true); 4100 return; 4101 } 4102 forward(q); 4103 } 4104 } 4105 4106 /** 4107 * Performs early processing of post-ime input events. 4108 */ 4109 final class EarlyPostImeInputStage extends InputStage { 4110 public EarlyPostImeInputStage(InputStage next) { 4111 super(next); 4112 } 4113 4114 @Override 4115 protected int onProcess(QueuedInputEvent q) { 4116 if (q.mEvent instanceof KeyEvent) { 4117 return processKeyEvent(q); 4118 } else { 4119 final int source = q.mEvent.getSource(); 4120 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 4121 return processPointerEvent(q); 4122 } 4123 } 4124 return FORWARD; 4125 } 4126 4127 private int processKeyEvent(QueuedInputEvent q) { 4128 final KeyEvent event = (KeyEvent)q.mEvent; 4129 4130 // If the key's purpose is to exit touch mode then we consume it 4131 // and consider it handled. 4132 if (checkForLeavingTouchModeAndConsume(event)) { 4133 return FINISH_HANDLED; 4134 } 4135 4136 // Make sure the fallback event policy sees all keys that will be 4137 // delivered to the view hierarchy. 4138 mFallbackEventHandler.preDispatchKeyEvent(event); 4139 return FORWARD; 4140 } 4141 4142 private int processPointerEvent(QueuedInputEvent q) { 4143 final MotionEvent event = (MotionEvent)q.mEvent; 4144 4145 // Translate the pointer event for compatibility, if needed. 4146 if (mTranslator != null) { 4147 mTranslator.translateEventInScreenToAppWindow(event); 4148 } 4149 4150 // Enter touch mode on down or scroll. 4151 final int action = event.getAction(); 4152 if (action == MotionEvent.ACTION_DOWN || action == MotionEvent.ACTION_SCROLL) { 4153 ensureTouchMode(true); 4154 } 4155 4156 // Offset the scroll position. 4157 if (mCurScrollY != 0) { 4158 event.offsetLocation(0, mCurScrollY); 4159 } 4160 4161 // Remember the touch position for possible drag-initiation. 4162 if (event.isTouchEvent()) { 4163 mLastTouchPoint.x = event.getRawX(); 4164 mLastTouchPoint.y = event.getRawY(); 4165 mLastTouchSource = event.getSource(); 4166 } 4167 return FORWARD; 4168 } 4169 } 4170 4171 /** 4172 * Delivers post-ime input events to a native activity. 4173 */ 4174 final class NativePostImeInputStage extends AsyncInputStage 4175 implements InputQueue.FinishedInputEventCallback { 4176 public NativePostImeInputStage(InputStage next, String traceCounter) { 4177 super(next, traceCounter); 4178 } 4179 4180 @Override 4181 protected int onProcess(QueuedInputEvent q) { 4182 if (mInputQueue != null) { 4183 mInputQueue.sendInputEvent(q.mEvent, q, false, this); 4184 return DEFER; 4185 } 4186 return FORWARD; 4187 } 4188 4189 @Override 4190 public void onFinishedInputEvent(Object token, boolean handled) { 4191 QueuedInputEvent q = (QueuedInputEvent)token; 4192 if (handled) { 4193 finish(q, true); 4194 return; 4195 } 4196 forward(q); 4197 } 4198 } 4199 4200 /** 4201 * Delivers post-ime input events to the view hierarchy. 4202 */ 4203 final class ViewPostImeInputStage extends InputStage { 4204 public ViewPostImeInputStage(InputStage next) { 4205 super(next); 4206 } 4207 4208 @Override 4209 protected int onProcess(QueuedInputEvent q) { 4210 if (q.mEvent instanceof KeyEvent) { 4211 return processKeyEvent(q); 4212 } else { 4213 final int source = q.mEvent.getSource(); 4214 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 4215 return processPointerEvent(q); 4216 } else if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 4217 return processTrackballEvent(q); 4218 } else { 4219 return processGenericMotionEvent(q); 4220 } 4221 } 4222 } 4223 4224 @Override 4225 protected void onDeliverToNext(QueuedInputEvent q) { 4226 if (mUnbufferedInputDispatch 4227 && q.mEvent instanceof MotionEvent 4228 && ((MotionEvent)q.mEvent).isTouchEvent() 4229 && isTerminalInputEvent(q.mEvent)) { 4230 mUnbufferedInputDispatch = false; 4231 scheduleConsumeBatchedInput(); 4232 } 4233 super.onDeliverToNext(q); 4234 } 4235 4236 private int processKeyEvent(QueuedInputEvent q) { 4237 final KeyEvent event = (KeyEvent)q.mEvent; 4238 4239 // Deliver the key to the view hierarchy. 4240 if (mView.dispatchKeyEvent(event)) { 4241 return FINISH_HANDLED; 4242 } 4243 4244 if (shouldDropInputEvent(q)) { 4245 return FINISH_NOT_HANDLED; 4246 } 4247 4248 // If the Control modifier is held, try to interpret the key as a shortcut. 4249 if (event.getAction() == KeyEvent.ACTION_DOWN 4250 && event.isCtrlPressed() 4251 && event.getRepeatCount() == 0 4252 && !KeyEvent.isModifierKey(event.getKeyCode())) { 4253 if (mView.dispatchKeyShortcutEvent(event)) { 4254 return FINISH_HANDLED; 4255 } 4256 if (shouldDropInputEvent(q)) { 4257 return FINISH_NOT_HANDLED; 4258 } 4259 } 4260 4261 // Apply the fallback event policy. 4262 if (mFallbackEventHandler.dispatchKeyEvent(event)) { 4263 return FINISH_HANDLED; 4264 } 4265 if (shouldDropInputEvent(q)) { 4266 return FINISH_NOT_HANDLED; 4267 } 4268 4269 // Handle automatic focus changes. 4270 if (event.getAction() == KeyEvent.ACTION_DOWN) { 4271 int direction = 0; 4272 switch (event.getKeyCode()) { 4273 case KeyEvent.KEYCODE_DPAD_LEFT: 4274 if (event.hasNoModifiers()) { 4275 direction = View.FOCUS_LEFT; 4276 } 4277 break; 4278 case KeyEvent.KEYCODE_DPAD_RIGHT: 4279 if (event.hasNoModifiers()) { 4280 direction = View.FOCUS_RIGHT; 4281 } 4282 break; 4283 case KeyEvent.KEYCODE_DPAD_UP: 4284 if (event.hasNoModifiers()) { 4285 direction = View.FOCUS_UP; 4286 } 4287 break; 4288 case KeyEvent.KEYCODE_DPAD_DOWN: 4289 if (event.hasNoModifiers()) { 4290 direction = View.FOCUS_DOWN; 4291 } 4292 break; 4293 case KeyEvent.KEYCODE_TAB: 4294 if (event.hasNoModifiers()) { 4295 direction = View.FOCUS_FORWARD; 4296 } else if (event.hasModifiers(KeyEvent.META_SHIFT_ON)) { 4297 direction = View.FOCUS_BACKWARD; 4298 } 4299 break; 4300 } 4301 if (direction != 0) { 4302 View focused = mView.findFocus(); 4303 if (focused != null) { 4304 View v = focused.focusSearch(direction); 4305 if (v != null && v != focused) { 4306 // do the math the get the interesting rect 4307 // of previous focused into the coord system of 4308 // newly focused view 4309 focused.getFocusedRect(mTempRect); 4310 if (mView instanceof ViewGroup) { 4311 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 4312 focused, mTempRect); 4313 ((ViewGroup) mView).offsetRectIntoDescendantCoords( 4314 v, mTempRect); 4315 } 4316 if (v.requestFocus(direction, mTempRect)) { 4317 playSoundEffect(SoundEffectConstants 4318 .getContantForFocusDirection(direction)); 4319 return FINISH_HANDLED; 4320 } 4321 } 4322 4323 // Give the focused view a last chance to handle the dpad key. 4324 if (mView.dispatchUnhandledMove(focused, direction)) { 4325 return FINISH_HANDLED; 4326 } 4327 } else { 4328 // find the best view to give focus to in this non-touch-mode with no-focus 4329 View v = focusSearch(null, direction); 4330 if (v != null && v.requestFocus(direction)) { 4331 return FINISH_HANDLED; 4332 } 4333 } 4334 } 4335 } 4336 return FORWARD; 4337 } 4338 4339 private int processPointerEvent(QueuedInputEvent q) { 4340 final MotionEvent event = (MotionEvent)q.mEvent; 4341 4342 mAttachInfo.mUnbufferedDispatchRequested = false; 4343 final View eventTarget = 4344 (event.isFromSource(InputDevice.SOURCE_MOUSE) && mCapturingView != null) ? 4345 mCapturingView : mView; 4346 mAttachInfo.mHandlingPointerEvent = true; 4347 boolean handled = eventTarget.dispatchPointerEvent(event); 4348 maybeUpdatePointerIcon(event); 4349 mAttachInfo.mHandlingPointerEvent = false; 4350 if (mAttachInfo.mUnbufferedDispatchRequested && !mUnbufferedInputDispatch) { 4351 mUnbufferedInputDispatch = true; 4352 if (mConsumeBatchedInputScheduled) { 4353 scheduleConsumeBatchedInputImmediately(); 4354 } 4355 } 4356 return handled ? FINISH_HANDLED : FORWARD; 4357 } 4358 4359 private void maybeUpdatePointerIcon(MotionEvent event) { 4360 if (event.getPointerCount() == 1 4361 && event.isFromSource(InputDevice.SOURCE_MOUSE)) { 4362 if (event.getActionMasked() == MotionEvent.ACTION_HOVER_ENTER 4363 || event.getActionMasked() == MotionEvent.ACTION_HOVER_EXIT) { 4364 // Other apps or the window manager may change the icon shape outside of 4365 // this app, therefore the icon shape has to be reset on enter/exit event. 4366 mPointerIconShape = PointerIcon.STYLE_NOT_SPECIFIED; 4367 } 4368 4369 if (event.getActionMasked() != MotionEvent.ACTION_HOVER_EXIT) { 4370 if (!updatePointerIcon(event) && 4371 event.getActionMasked() == MotionEvent.ACTION_HOVER_MOVE) { 4372 mPointerIconShape = PointerIcon.STYLE_NOT_SPECIFIED; 4373 } 4374 } 4375 } 4376 } 4377 4378 private int processTrackballEvent(QueuedInputEvent q) { 4379 final MotionEvent event = (MotionEvent)q.mEvent; 4380 4381 if (mView.dispatchTrackballEvent(event)) { 4382 return FINISH_HANDLED; 4383 } 4384 return FORWARD; 4385 } 4386 4387 private int processGenericMotionEvent(QueuedInputEvent q) { 4388 final MotionEvent event = (MotionEvent)q.mEvent; 4389 4390 // Deliver the event to the view. 4391 if (mView.dispatchGenericMotionEvent(event)) { 4392 return FINISH_HANDLED; 4393 } 4394 return FORWARD; 4395 } 4396 } 4397 4398 private void resetPointerIcon(MotionEvent event) { 4399 mPointerIconShape = PointerIcon.STYLE_NOT_SPECIFIED; 4400 updatePointerIcon(event); 4401 } 4402 4403 private boolean updatePointerIcon(MotionEvent event) { 4404 final float x = event.getX(); 4405 final float y = event.getY(); 4406 if (mView == null) { 4407 // E.g. click outside a popup to dismiss it 4408 Slog.d(mTag, "updatePointerIcon called after view was removed"); 4409 return false; 4410 } 4411 if (x < 0 || x >= mView.getWidth() || y < 0 || y >= mView.getHeight()) { 4412 // E.g. when moving window divider with mouse 4413 Slog.d(mTag, "updatePointerIcon called with position out of bounds"); 4414 return false; 4415 } 4416 final PointerIcon pointerIcon = mView.getPointerIcon(event, x, y); 4417 final int pointerShape = (pointerIcon != null) ? 4418 pointerIcon.getStyle() : PointerIcon.STYLE_DEFAULT; 4419 4420 if (mPointerIconShape != pointerShape) { 4421 mPointerIconShape = pointerShape; 4422 if (mPointerIconShape != PointerIcon.STYLE_CUSTOM) { 4423 mCustomPointerIcon = null; 4424 InputManager.getInstance().setPointerIconShape(pointerShape); 4425 return true; 4426 } 4427 } 4428 if (mPointerIconShape == PointerIcon.STYLE_CUSTOM && 4429 !pointerIcon.equals(mCustomPointerIcon)) { 4430 mCustomPointerIcon = pointerIcon; 4431 InputManager.getInstance().setCustomPointerIcon(mCustomPointerIcon); 4432 } 4433 return true; 4434 } 4435 4436 /** 4437 * Performs synthesis of new input events from unhandled input events. 4438 */ 4439 final class SyntheticInputStage extends InputStage { 4440 private final SyntheticTrackballHandler mTrackball = new SyntheticTrackballHandler(); 4441 private final SyntheticJoystickHandler mJoystick = new SyntheticJoystickHandler(); 4442 private final SyntheticTouchNavigationHandler mTouchNavigation = 4443 new SyntheticTouchNavigationHandler(); 4444 private final SyntheticKeyboardHandler mKeyboard = new SyntheticKeyboardHandler(); 4445 4446 public SyntheticInputStage() { 4447 super(null); 4448 } 4449 4450 @Override 4451 protected int onProcess(QueuedInputEvent q) { 4452 q.mFlags |= QueuedInputEvent.FLAG_RESYNTHESIZED; 4453 if (q.mEvent instanceof MotionEvent) { 4454 final MotionEvent event = (MotionEvent)q.mEvent; 4455 final int source = event.getSource(); 4456 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 4457 mTrackball.process(event); 4458 return FINISH_HANDLED; 4459 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 4460 mJoystick.process(event); 4461 return FINISH_HANDLED; 4462 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 4463 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 4464 mTouchNavigation.process(event); 4465 return FINISH_HANDLED; 4466 } 4467 } else if ((q.mFlags & QueuedInputEvent.FLAG_UNHANDLED) != 0) { 4468 mKeyboard.process((KeyEvent)q.mEvent); 4469 return FINISH_HANDLED; 4470 } 4471 4472 return FORWARD; 4473 } 4474 4475 @Override 4476 protected void onDeliverToNext(QueuedInputEvent q) { 4477 if ((q.mFlags & QueuedInputEvent.FLAG_RESYNTHESIZED) == 0) { 4478 // Cancel related synthetic events if any prior stage has handled the event. 4479 if (q.mEvent instanceof MotionEvent) { 4480 final MotionEvent event = (MotionEvent)q.mEvent; 4481 final int source = event.getSource(); 4482 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 4483 mTrackball.cancel(event); 4484 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 4485 mJoystick.cancel(event); 4486 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 4487 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 4488 mTouchNavigation.cancel(event); 4489 } 4490 } 4491 } 4492 super.onDeliverToNext(q); 4493 } 4494 } 4495 4496 /** 4497 * Creates dpad events from unhandled trackball movements. 4498 */ 4499 final class SyntheticTrackballHandler { 4500 private final TrackballAxis mX = new TrackballAxis(); 4501 private final TrackballAxis mY = new TrackballAxis(); 4502 private long mLastTime; 4503 4504 public void process(MotionEvent event) { 4505 // Translate the trackball event into DPAD keys and try to deliver those. 4506 long curTime = SystemClock.uptimeMillis(); 4507 if ((mLastTime + MAX_TRACKBALL_DELAY) < curTime) { 4508 // It has been too long since the last movement, 4509 // so restart at the beginning. 4510 mX.reset(0); 4511 mY.reset(0); 4512 mLastTime = curTime; 4513 } 4514 4515 final int action = event.getAction(); 4516 final int metaState = event.getMetaState(); 4517 switch (action) { 4518 case MotionEvent.ACTION_DOWN: 4519 mX.reset(2); 4520 mY.reset(2); 4521 enqueueInputEvent(new KeyEvent(curTime, curTime, 4522 KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 4523 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4524 InputDevice.SOURCE_KEYBOARD)); 4525 break; 4526 case MotionEvent.ACTION_UP: 4527 mX.reset(2); 4528 mY.reset(2); 4529 enqueueInputEvent(new KeyEvent(curTime, curTime, 4530 KeyEvent.ACTION_UP, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 4531 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4532 InputDevice.SOURCE_KEYBOARD)); 4533 break; 4534 } 4535 4536 if (DEBUG_TRACKBALL) Log.v(mTag, "TB X=" + mX.position + " step=" 4537 + mX.step + " dir=" + mX.dir + " acc=" + mX.acceleration 4538 + " move=" + event.getX() 4539 + " / Y=" + mY.position + " step=" 4540 + mY.step + " dir=" + mY.dir + " acc=" + mY.acceleration 4541 + " move=" + event.getY()); 4542 final float xOff = mX.collect(event.getX(), event.getEventTime(), "X"); 4543 final float yOff = mY.collect(event.getY(), event.getEventTime(), "Y"); 4544 4545 // Generate DPAD events based on the trackball movement. 4546 // We pick the axis that has moved the most as the direction of 4547 // the DPAD. When we generate DPAD events for one axis, then the 4548 // other axis is reset -- we don't want to perform DPAD jumps due 4549 // to slight movements in the trackball when making major movements 4550 // along the other axis. 4551 int keycode = 0; 4552 int movement = 0; 4553 float accel = 1; 4554 if (xOff > yOff) { 4555 movement = mX.generate(); 4556 if (movement != 0) { 4557 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_RIGHT 4558 : KeyEvent.KEYCODE_DPAD_LEFT; 4559 accel = mX.acceleration; 4560 mY.reset(2); 4561 } 4562 } else if (yOff > 0) { 4563 movement = mY.generate(); 4564 if (movement != 0) { 4565 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_DOWN 4566 : KeyEvent.KEYCODE_DPAD_UP; 4567 accel = mY.acceleration; 4568 mX.reset(2); 4569 } 4570 } 4571 4572 if (keycode != 0) { 4573 if (movement < 0) movement = -movement; 4574 int accelMovement = (int)(movement * accel); 4575 if (DEBUG_TRACKBALL) Log.v(mTag, "Move: movement=" + movement 4576 + " accelMovement=" + accelMovement 4577 + " accel=" + accel); 4578 if (accelMovement > movement) { 4579 if (DEBUG_TRACKBALL) Log.v(mTag, "Delivering fake DPAD: " 4580 + keycode); 4581 movement--; 4582 int repeatCount = accelMovement - movement; 4583 enqueueInputEvent(new KeyEvent(curTime, curTime, 4584 KeyEvent.ACTION_MULTIPLE, keycode, repeatCount, metaState, 4585 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4586 InputDevice.SOURCE_KEYBOARD)); 4587 } 4588 while (movement > 0) { 4589 if (DEBUG_TRACKBALL) Log.v(mTag, "Delivering fake DPAD: " 4590 + keycode); 4591 movement--; 4592 curTime = SystemClock.uptimeMillis(); 4593 enqueueInputEvent(new KeyEvent(curTime, curTime, 4594 KeyEvent.ACTION_DOWN, keycode, 0, metaState, 4595 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4596 InputDevice.SOURCE_KEYBOARD)); 4597 enqueueInputEvent(new KeyEvent(curTime, curTime, 4598 KeyEvent.ACTION_UP, keycode, 0, metaState, 4599 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4600 InputDevice.SOURCE_KEYBOARD)); 4601 } 4602 mLastTime = curTime; 4603 } 4604 } 4605 4606 public void cancel(MotionEvent event) { 4607 mLastTime = Integer.MIN_VALUE; 4608 4609 // If we reach this, we consumed a trackball event. 4610 // Because we will not translate the trackball event into a key event, 4611 // touch mode will not exit, so we exit touch mode here. 4612 if (mView != null && mAdded) { 4613 ensureTouchMode(false); 4614 } 4615 } 4616 } 4617 4618 /** 4619 * Maintains state information for a single trackball axis, generating 4620 * discrete (DPAD) movements based on raw trackball motion. 4621 */ 4622 static final class TrackballAxis { 4623 /** 4624 * The maximum amount of acceleration we will apply. 4625 */ 4626 static final float MAX_ACCELERATION = 20; 4627 4628 /** 4629 * The maximum amount of time (in milliseconds) between events in order 4630 * for us to consider the user to be doing fast trackball movements, 4631 * and thus apply an acceleration. 4632 */ 4633 static final long FAST_MOVE_TIME = 150; 4634 4635 /** 4636 * Scaling factor to the time (in milliseconds) between events to how 4637 * much to multiple/divide the current acceleration. When movement 4638 * is < FAST_MOVE_TIME this multiplies the acceleration; when > 4639 * FAST_MOVE_TIME it divides it. 4640 */ 4641 static final float ACCEL_MOVE_SCALING_FACTOR = (1.0f/40); 4642 4643 static final float FIRST_MOVEMENT_THRESHOLD = 0.5f; 4644 static final float SECOND_CUMULATIVE_MOVEMENT_THRESHOLD = 2.0f; 4645 static final float SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD = 1.0f; 4646 4647 float position; 4648 float acceleration = 1; 4649 long lastMoveTime = 0; 4650 int step; 4651 int dir; 4652 int nonAccelMovement; 4653 4654 void reset(int _step) { 4655 position = 0; 4656 acceleration = 1; 4657 lastMoveTime = 0; 4658 step = _step; 4659 dir = 0; 4660 } 4661 4662 /** 4663 * Add trackball movement into the state. If the direction of movement 4664 * has been reversed, the state is reset before adding the 4665 * movement (so that you don't have to compensate for any previously 4666 * collected movement before see the result of the movement in the 4667 * new direction). 4668 * 4669 * @return Returns the absolute value of the amount of movement 4670 * collected so far. 4671 */ 4672 float collect(float off, long time, String axis) { 4673 long normTime; 4674 if (off > 0) { 4675 normTime = (long)(off * FAST_MOVE_TIME); 4676 if (dir < 0) { 4677 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to positive!"); 4678 position = 0; 4679 step = 0; 4680 acceleration = 1; 4681 lastMoveTime = 0; 4682 } 4683 dir = 1; 4684 } else if (off < 0) { 4685 normTime = (long)((-off) * FAST_MOVE_TIME); 4686 if (dir > 0) { 4687 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to negative!"); 4688 position = 0; 4689 step = 0; 4690 acceleration = 1; 4691 lastMoveTime = 0; 4692 } 4693 dir = -1; 4694 } else { 4695 normTime = 0; 4696 } 4697 4698 // The number of milliseconds between each movement that is 4699 // considered "normal" and will not result in any acceleration 4700 // or deceleration, scaled by the offset we have here. 4701 if (normTime > 0) { 4702 long delta = time - lastMoveTime; 4703 lastMoveTime = time; 4704 float acc = acceleration; 4705 if (delta < normTime) { 4706 // The user is scrolling rapidly, so increase acceleration. 4707 float scale = (normTime-delta) * ACCEL_MOVE_SCALING_FACTOR; 4708 if (scale > 1) acc *= scale; 4709 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " accelerate: off=" 4710 + off + " normTime=" + normTime + " delta=" + delta 4711 + " scale=" + scale + " acc=" + acc); 4712 acceleration = acc < MAX_ACCELERATION ? acc : MAX_ACCELERATION; 4713 } else { 4714 // The user is scrolling slowly, so decrease acceleration. 4715 float scale = (delta-normTime) * ACCEL_MOVE_SCALING_FACTOR; 4716 if (scale > 1) acc /= scale; 4717 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " deccelerate: off=" 4718 + off + " normTime=" + normTime + " delta=" + delta 4719 + " scale=" + scale + " acc=" + acc); 4720 acceleration = acc > 1 ? acc : 1; 4721 } 4722 } 4723 position += off; 4724 return Math.abs(position); 4725 } 4726 4727 /** 4728 * Generate the number of discrete movement events appropriate for 4729 * the currently collected trackball movement. 4730 * 4731 * @return Returns the number of discrete movements, either positive 4732 * or negative, or 0 if there is not enough trackball movement yet 4733 * for a discrete movement. 4734 */ 4735 int generate() { 4736 int movement = 0; 4737 nonAccelMovement = 0; 4738 do { 4739 final int dir = position >= 0 ? 1 : -1; 4740 switch (step) { 4741 // If we are going to execute the first step, then we want 4742 // to do this as soon as possible instead of waiting for 4743 // a full movement, in order to make things look responsive. 4744 case 0: 4745 if (Math.abs(position) < FIRST_MOVEMENT_THRESHOLD) { 4746 return movement; 4747 } 4748 movement += dir; 4749 nonAccelMovement += dir; 4750 step = 1; 4751 break; 4752 // If we have generated the first movement, then we need 4753 // to wait for the second complete trackball motion before 4754 // generating the second discrete movement. 4755 case 1: 4756 if (Math.abs(position) < SECOND_CUMULATIVE_MOVEMENT_THRESHOLD) { 4757 return movement; 4758 } 4759 movement += dir; 4760 nonAccelMovement += dir; 4761 position -= SECOND_CUMULATIVE_MOVEMENT_THRESHOLD * dir; 4762 step = 2; 4763 break; 4764 // After the first two, we generate discrete movements 4765 // consistently with the trackball, applying an acceleration 4766 // if the trackball is moving quickly. This is a simple 4767 // acceleration on top of what we already compute based 4768 // on how quickly the wheel is being turned, to apply 4769 // a longer increasing acceleration to continuous movement 4770 // in one direction. 4771 default: 4772 if (Math.abs(position) < SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD) { 4773 return movement; 4774 } 4775 movement += dir; 4776 position -= dir * SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD; 4777 float acc = acceleration; 4778 acc *= 1.1f; 4779 acceleration = acc < MAX_ACCELERATION ? acc : acceleration; 4780 break; 4781 } 4782 } while (true); 4783 } 4784 } 4785 4786 /** 4787 * Creates dpad events from unhandled joystick movements. 4788 */ 4789 final class SyntheticJoystickHandler extends Handler { 4790 private final static String TAG = "SyntheticJoystickHandler"; 4791 private final static int MSG_ENQUEUE_X_AXIS_KEY_REPEAT = 1; 4792 private final static int MSG_ENQUEUE_Y_AXIS_KEY_REPEAT = 2; 4793 4794 private int mLastXDirection; 4795 private int mLastYDirection; 4796 private int mLastXKeyCode; 4797 private int mLastYKeyCode; 4798 4799 public SyntheticJoystickHandler() { 4800 super(true); 4801 } 4802 4803 @Override 4804 public void handleMessage(Message msg) { 4805 switch (msg.what) { 4806 case MSG_ENQUEUE_X_AXIS_KEY_REPEAT: 4807 case MSG_ENQUEUE_Y_AXIS_KEY_REPEAT: { 4808 KeyEvent oldEvent = (KeyEvent)msg.obj; 4809 KeyEvent e = KeyEvent.changeTimeRepeat(oldEvent, 4810 SystemClock.uptimeMillis(), 4811 oldEvent.getRepeatCount() + 1); 4812 if (mAttachInfo.mHasWindowFocus) { 4813 enqueueInputEvent(e); 4814 Message m = obtainMessage(msg.what, e); 4815 m.setAsynchronous(true); 4816 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatDelay()); 4817 } 4818 } break; 4819 } 4820 } 4821 4822 public void process(MotionEvent event) { 4823 switch(event.getActionMasked()) { 4824 case MotionEvent.ACTION_CANCEL: 4825 cancel(event); 4826 break; 4827 case MotionEvent.ACTION_MOVE: 4828 update(event, true); 4829 break; 4830 default: 4831 Log.w(mTag, "Unexpected action: " + event.getActionMasked()); 4832 } 4833 } 4834 4835 private void cancel(MotionEvent event) { 4836 removeMessages(MSG_ENQUEUE_X_AXIS_KEY_REPEAT); 4837 removeMessages(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT); 4838 update(event, false); 4839 } 4840 4841 private void update(MotionEvent event, boolean synthesizeNewKeys) { 4842 final long time = event.getEventTime(); 4843 final int metaState = event.getMetaState(); 4844 final int deviceId = event.getDeviceId(); 4845 final int source = event.getSource(); 4846 4847 int xDirection = joystickAxisValueToDirection( 4848 event.getAxisValue(MotionEvent.AXIS_HAT_X)); 4849 if (xDirection == 0) { 4850 xDirection = joystickAxisValueToDirection(event.getX()); 4851 } 4852 4853 int yDirection = joystickAxisValueToDirection( 4854 event.getAxisValue(MotionEvent.AXIS_HAT_Y)); 4855 if (yDirection == 0) { 4856 yDirection = joystickAxisValueToDirection(event.getY()); 4857 } 4858 4859 if (xDirection != mLastXDirection) { 4860 if (mLastXKeyCode != 0) { 4861 removeMessages(MSG_ENQUEUE_X_AXIS_KEY_REPEAT); 4862 enqueueInputEvent(new KeyEvent(time, time, 4863 KeyEvent.ACTION_UP, mLastXKeyCode, 0, metaState, 4864 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4865 mLastXKeyCode = 0; 4866 } 4867 4868 mLastXDirection = xDirection; 4869 4870 if (xDirection != 0 && synthesizeNewKeys) { 4871 mLastXKeyCode = xDirection > 0 4872 ? KeyEvent.KEYCODE_DPAD_RIGHT : KeyEvent.KEYCODE_DPAD_LEFT; 4873 final KeyEvent e = new KeyEvent(time, time, 4874 KeyEvent.ACTION_DOWN, mLastXKeyCode, 0, metaState, 4875 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4876 enqueueInputEvent(e); 4877 Message m = obtainMessage(MSG_ENQUEUE_X_AXIS_KEY_REPEAT, e); 4878 m.setAsynchronous(true); 4879 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4880 } 4881 } 4882 4883 if (yDirection != mLastYDirection) { 4884 if (mLastYKeyCode != 0) { 4885 removeMessages(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT); 4886 enqueueInputEvent(new KeyEvent(time, time, 4887 KeyEvent.ACTION_UP, mLastYKeyCode, 0, metaState, 4888 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4889 mLastYKeyCode = 0; 4890 } 4891 4892 mLastYDirection = yDirection; 4893 4894 if (yDirection != 0 && synthesizeNewKeys) { 4895 mLastYKeyCode = yDirection > 0 4896 ? KeyEvent.KEYCODE_DPAD_DOWN : KeyEvent.KEYCODE_DPAD_UP; 4897 final KeyEvent e = new KeyEvent(time, time, 4898 KeyEvent.ACTION_DOWN, mLastYKeyCode, 0, metaState, 4899 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4900 enqueueInputEvent(e); 4901 Message m = obtainMessage(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT, e); 4902 m.setAsynchronous(true); 4903 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4904 } 4905 } 4906 } 4907 4908 private int joystickAxisValueToDirection(float value) { 4909 if (value >= 0.5f) { 4910 return 1; 4911 } else if (value <= -0.5f) { 4912 return -1; 4913 } else { 4914 return 0; 4915 } 4916 } 4917 } 4918 4919 /** 4920 * Creates dpad events from unhandled touch navigation movements. 4921 */ 4922 final class SyntheticTouchNavigationHandler extends Handler { 4923 private static final String LOCAL_TAG = "SyntheticTouchNavigationHandler"; 4924 private static final boolean LOCAL_DEBUG = false; 4925 4926 // Assumed nominal width and height in millimeters of a touch navigation pad, 4927 // if no resolution information is available from the input system. 4928 private static final float DEFAULT_WIDTH_MILLIMETERS = 48; 4929 private static final float DEFAULT_HEIGHT_MILLIMETERS = 48; 4930 4931 /* TODO: These constants should eventually be moved to ViewConfiguration. */ 4932 4933 // The nominal distance traveled to move by one unit. 4934 private static final int TICK_DISTANCE_MILLIMETERS = 12; 4935 4936 // Minimum and maximum fling velocity in ticks per second. 4937 // The minimum velocity should be set such that we perform enough ticks per 4938 // second that the fling appears to be fluid. For example, if we set the minimum 4939 // to 2 ticks per second, then there may be up to half a second delay between the next 4940 // to last and last ticks which is noticeably discrete and jerky. This value should 4941 // probably not be set to anything less than about 4. 4942 // If fling accuracy is a problem then consider tuning the tick distance instead. 4943 private static final float MIN_FLING_VELOCITY_TICKS_PER_SECOND = 6f; 4944 private static final float MAX_FLING_VELOCITY_TICKS_PER_SECOND = 20f; 4945 4946 // Fling velocity decay factor applied after each new key is emitted. 4947 // This parameter controls the deceleration and overall duration of the fling. 4948 // The fling stops automatically when its velocity drops below the minimum 4949 // fling velocity defined above. 4950 private static final float FLING_TICK_DECAY = 0.8f; 4951 4952 /* The input device that we are tracking. */ 4953 4954 private int mCurrentDeviceId = -1; 4955 private int mCurrentSource; 4956 private boolean mCurrentDeviceSupported; 4957 4958 /* Configuration for the current input device. */ 4959 4960 // The scaled tick distance. A movement of this amount should generally translate 4961 // into a single dpad event in a given direction. 4962 private float mConfigTickDistance; 4963 4964 // The minimum and maximum scaled fling velocity. 4965 private float mConfigMinFlingVelocity; 4966 private float mConfigMaxFlingVelocity; 4967 4968 /* Tracking state. */ 4969 4970 // The velocity tracker for detecting flings. 4971 private VelocityTracker mVelocityTracker; 4972 4973 // The active pointer id, or -1 if none. 4974 private int mActivePointerId = -1; 4975 4976 // Location where tracking started. 4977 private float mStartX; 4978 private float mStartY; 4979 4980 // Most recently observed position. 4981 private float mLastX; 4982 private float mLastY; 4983 4984 // Accumulated movement delta since the last direction key was sent. 4985 private float mAccumulatedX; 4986 private float mAccumulatedY; 4987 4988 // Set to true if any movement was delivered to the app. 4989 // Implies that tap slop was exceeded. 4990 private boolean mConsumedMovement; 4991 4992 // The most recently sent key down event. 4993 // The keycode remains set until the direction changes or a fling ends 4994 // so that repeated key events may be generated as required. 4995 private long mPendingKeyDownTime; 4996 private int mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 4997 private int mPendingKeyRepeatCount; 4998 private int mPendingKeyMetaState; 4999 5000 // The current fling velocity while a fling is in progress. 5001 private boolean mFlinging; 5002 private float mFlingVelocity; 5003 5004 public SyntheticTouchNavigationHandler() { 5005 super(true); 5006 } 5007 5008 public void process(MotionEvent event) { 5009 // Update the current device information. 5010 final long time = event.getEventTime(); 5011 final int deviceId = event.getDeviceId(); 5012 final int source = event.getSource(); 5013 if (mCurrentDeviceId != deviceId || mCurrentSource != source) { 5014 finishKeys(time); 5015 finishTracking(time); 5016 mCurrentDeviceId = deviceId; 5017 mCurrentSource = source; 5018 mCurrentDeviceSupported = false; 5019 InputDevice device = event.getDevice(); 5020 if (device != null) { 5021 // In order to support an input device, we must know certain 5022 // characteristics about it, such as its size and resolution. 5023 InputDevice.MotionRange xRange = device.getMotionRange(MotionEvent.AXIS_X); 5024 InputDevice.MotionRange yRange = device.getMotionRange(MotionEvent.AXIS_Y); 5025 if (xRange != null && yRange != null) { 5026 mCurrentDeviceSupported = true; 5027 5028 // Infer the resolution if it not actually known. 5029 float xRes = xRange.getResolution(); 5030 if (xRes <= 0) { 5031 xRes = xRange.getRange() / DEFAULT_WIDTH_MILLIMETERS; 5032 } 5033 float yRes = yRange.getResolution(); 5034 if (yRes <= 0) { 5035 yRes = yRange.getRange() / DEFAULT_HEIGHT_MILLIMETERS; 5036 } 5037 float nominalRes = (xRes + yRes) * 0.5f; 5038 5039 // Precompute all of the configuration thresholds we will need. 5040 mConfigTickDistance = TICK_DISTANCE_MILLIMETERS * nominalRes; 5041 mConfigMinFlingVelocity = 5042 MIN_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 5043 mConfigMaxFlingVelocity = 5044 MAX_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 5045 5046 if (LOCAL_DEBUG) { 5047 Log.d(LOCAL_TAG, "Configured device " + mCurrentDeviceId 5048 + " (" + Integer.toHexString(mCurrentSource) + "): " 5049 + ", mConfigTickDistance=" + mConfigTickDistance 5050 + ", mConfigMinFlingVelocity=" + mConfigMinFlingVelocity 5051 + ", mConfigMaxFlingVelocity=" + mConfigMaxFlingVelocity); 5052 } 5053 } 5054 } 5055 } 5056 if (!mCurrentDeviceSupported) { 5057 return; 5058 } 5059 5060 // Handle the event. 5061 final int action = event.getActionMasked(); 5062 switch (action) { 5063 case MotionEvent.ACTION_DOWN: { 5064 boolean caughtFling = mFlinging; 5065 finishKeys(time); 5066 finishTracking(time); 5067 mActivePointerId = event.getPointerId(0); 5068 mVelocityTracker = VelocityTracker.obtain(); 5069 mVelocityTracker.addMovement(event); 5070 mStartX = event.getX(); 5071 mStartY = event.getY(); 5072 mLastX = mStartX; 5073 mLastY = mStartY; 5074 mAccumulatedX = 0; 5075 mAccumulatedY = 0; 5076 5077 // If we caught a fling, then pretend that the tap slop has already 5078 // been exceeded to suppress taps whose only purpose is to stop the fling. 5079 mConsumedMovement = caughtFling; 5080 break; 5081 } 5082 5083 case MotionEvent.ACTION_MOVE: 5084 case MotionEvent.ACTION_UP: { 5085 if (mActivePointerId < 0) { 5086 break; 5087 } 5088 final int index = event.findPointerIndex(mActivePointerId); 5089 if (index < 0) { 5090 finishKeys(time); 5091 finishTracking(time); 5092 break; 5093 } 5094 5095 mVelocityTracker.addMovement(event); 5096 final float x = event.getX(index); 5097 final float y = event.getY(index); 5098 mAccumulatedX += x - mLastX; 5099 mAccumulatedY += y - mLastY; 5100 mLastX = x; 5101 mLastY = y; 5102 5103 // Consume any accumulated movement so far. 5104 final int metaState = event.getMetaState(); 5105 consumeAccumulatedMovement(time, metaState); 5106 5107 // Detect taps and flings. 5108 if (action == MotionEvent.ACTION_UP) { 5109 if (mConsumedMovement && mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 5110 // It might be a fling. 5111 mVelocityTracker.computeCurrentVelocity(1000, mConfigMaxFlingVelocity); 5112 final float vx = mVelocityTracker.getXVelocity(mActivePointerId); 5113 final float vy = mVelocityTracker.getYVelocity(mActivePointerId); 5114 if (!startFling(time, vx, vy)) { 5115 finishKeys(time); 5116 } 5117 } 5118 finishTracking(time); 5119 } 5120 break; 5121 } 5122 5123 case MotionEvent.ACTION_CANCEL: { 5124 finishKeys(time); 5125 finishTracking(time); 5126 break; 5127 } 5128 } 5129 } 5130 5131 public void cancel(MotionEvent event) { 5132 if (mCurrentDeviceId == event.getDeviceId() 5133 && mCurrentSource == event.getSource()) { 5134 final long time = event.getEventTime(); 5135 finishKeys(time); 5136 finishTracking(time); 5137 } 5138 } 5139 5140 private void finishKeys(long time) { 5141 cancelFling(); 5142 sendKeyUp(time); 5143 } 5144 5145 private void finishTracking(long time) { 5146 if (mActivePointerId >= 0) { 5147 mActivePointerId = -1; 5148 mVelocityTracker.recycle(); 5149 mVelocityTracker = null; 5150 } 5151 } 5152 5153 private void consumeAccumulatedMovement(long time, int metaState) { 5154 final float absX = Math.abs(mAccumulatedX); 5155 final float absY = Math.abs(mAccumulatedY); 5156 if (absX >= absY) { 5157 if (absX >= mConfigTickDistance) { 5158 mAccumulatedX = consumeAccumulatedMovement(time, metaState, mAccumulatedX, 5159 KeyEvent.KEYCODE_DPAD_LEFT, KeyEvent.KEYCODE_DPAD_RIGHT); 5160 mAccumulatedY = 0; 5161 mConsumedMovement = true; 5162 } 5163 } else { 5164 if (absY >= mConfigTickDistance) { 5165 mAccumulatedY = consumeAccumulatedMovement(time, metaState, mAccumulatedY, 5166 KeyEvent.KEYCODE_DPAD_UP, KeyEvent.KEYCODE_DPAD_DOWN); 5167 mAccumulatedX = 0; 5168 mConsumedMovement = true; 5169 } 5170 } 5171 } 5172 5173 private float consumeAccumulatedMovement(long time, int metaState, 5174 float accumulator, int negativeKeyCode, int positiveKeyCode) { 5175 while (accumulator <= -mConfigTickDistance) { 5176 sendKeyDownOrRepeat(time, negativeKeyCode, metaState); 5177 accumulator += mConfigTickDistance; 5178 } 5179 while (accumulator >= mConfigTickDistance) { 5180 sendKeyDownOrRepeat(time, positiveKeyCode, metaState); 5181 accumulator -= mConfigTickDistance; 5182 } 5183 return accumulator; 5184 } 5185 5186 private void sendKeyDownOrRepeat(long time, int keyCode, int metaState) { 5187 if (mPendingKeyCode != keyCode) { 5188 sendKeyUp(time); 5189 mPendingKeyDownTime = time; 5190 mPendingKeyCode = keyCode; 5191 mPendingKeyRepeatCount = 0; 5192 } else { 5193 mPendingKeyRepeatCount += 1; 5194 } 5195 mPendingKeyMetaState = metaState; 5196 5197 // Note: Normally we would pass FLAG_LONG_PRESS when the repeat count is 1 5198 // but it doesn't quite make sense when simulating the events in this way. 5199 if (LOCAL_DEBUG) { 5200 Log.d(LOCAL_TAG, "Sending key down: keyCode=" + mPendingKeyCode 5201 + ", repeatCount=" + mPendingKeyRepeatCount 5202 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 5203 } 5204 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 5205 KeyEvent.ACTION_DOWN, mPendingKeyCode, mPendingKeyRepeatCount, 5206 mPendingKeyMetaState, mCurrentDeviceId, 5207 KeyEvent.FLAG_FALLBACK, mCurrentSource)); 5208 } 5209 5210 private void sendKeyUp(long time) { 5211 if (mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 5212 if (LOCAL_DEBUG) { 5213 Log.d(LOCAL_TAG, "Sending key up: keyCode=" + mPendingKeyCode 5214 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 5215 } 5216 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 5217 KeyEvent.ACTION_UP, mPendingKeyCode, 0, mPendingKeyMetaState, 5218 mCurrentDeviceId, 0, KeyEvent.FLAG_FALLBACK, 5219 mCurrentSource)); 5220 mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 5221 } 5222 } 5223 5224 private boolean startFling(long time, float vx, float vy) { 5225 if (LOCAL_DEBUG) { 5226 Log.d(LOCAL_TAG, "Considering fling: vx=" + vx + ", vy=" + vy 5227 + ", min=" + mConfigMinFlingVelocity); 5228 } 5229 5230 // Flings must be oriented in the same direction as the preceding movements. 5231 switch (mPendingKeyCode) { 5232 case KeyEvent.KEYCODE_DPAD_LEFT: 5233 if (-vx >= mConfigMinFlingVelocity 5234 && Math.abs(vy) < mConfigMinFlingVelocity) { 5235 mFlingVelocity = -vx; 5236 break; 5237 } 5238 return false; 5239 5240 case KeyEvent.KEYCODE_DPAD_RIGHT: 5241 if (vx >= mConfigMinFlingVelocity 5242 && Math.abs(vy) < mConfigMinFlingVelocity) { 5243 mFlingVelocity = vx; 5244 break; 5245 } 5246 return false; 5247 5248 case KeyEvent.KEYCODE_DPAD_UP: 5249 if (-vy >= mConfigMinFlingVelocity 5250 && Math.abs(vx) < mConfigMinFlingVelocity) { 5251 mFlingVelocity = -vy; 5252 break; 5253 } 5254 return false; 5255 5256 case KeyEvent.KEYCODE_DPAD_DOWN: 5257 if (vy >= mConfigMinFlingVelocity 5258 && Math.abs(vx) < mConfigMinFlingVelocity) { 5259 mFlingVelocity = vy; 5260 break; 5261 } 5262 return false; 5263 } 5264 5265 // Post the first fling event. 5266 mFlinging = postFling(time); 5267 return mFlinging; 5268 } 5269 5270 private boolean postFling(long time) { 5271 // The idea here is to estimate the time when the pointer would have 5272 // traveled one tick distance unit given the current fling velocity. 5273 // This effect creates continuity of motion. 5274 if (mFlingVelocity >= mConfigMinFlingVelocity) { 5275 long delay = (long)(mConfigTickDistance / mFlingVelocity * 1000); 5276 postAtTime(mFlingRunnable, time + delay); 5277 if (LOCAL_DEBUG) { 5278 Log.d(LOCAL_TAG, "Posted fling: velocity=" 5279 + mFlingVelocity + ", delay=" + delay 5280 + ", keyCode=" + mPendingKeyCode); 5281 } 5282 return true; 5283 } 5284 return false; 5285 } 5286 5287 private void cancelFling() { 5288 if (mFlinging) { 5289 removeCallbacks(mFlingRunnable); 5290 mFlinging = false; 5291 } 5292 } 5293 5294 private final Runnable mFlingRunnable = new Runnable() { 5295 @Override 5296 public void run() { 5297 final long time = SystemClock.uptimeMillis(); 5298 sendKeyDownOrRepeat(time, mPendingKeyCode, mPendingKeyMetaState); 5299 mFlingVelocity *= FLING_TICK_DECAY; 5300 if (!postFling(time)) { 5301 mFlinging = false; 5302 finishKeys(time); 5303 } 5304 } 5305 }; 5306 } 5307 5308 final class SyntheticKeyboardHandler { 5309 public void process(KeyEvent event) { 5310 if ((event.getFlags() & KeyEvent.FLAG_FALLBACK) != 0) { 5311 return; 5312 } 5313 5314 final KeyCharacterMap kcm = event.getKeyCharacterMap(); 5315 final int keyCode = event.getKeyCode(); 5316 final int metaState = event.getMetaState(); 5317 5318 // Check for fallback actions specified by the key character map. 5319 KeyCharacterMap.FallbackAction fallbackAction = 5320 kcm.getFallbackAction(keyCode, metaState); 5321 if (fallbackAction != null) { 5322 final int flags = event.getFlags() | KeyEvent.FLAG_FALLBACK; 5323 KeyEvent fallbackEvent = KeyEvent.obtain( 5324 event.getDownTime(), event.getEventTime(), 5325 event.getAction(), fallbackAction.keyCode, 5326 event.getRepeatCount(), fallbackAction.metaState, 5327 event.getDeviceId(), event.getScanCode(), 5328 flags, event.getSource(), null); 5329 fallbackAction.recycle(); 5330 enqueueInputEvent(fallbackEvent); 5331 } 5332 } 5333 } 5334 5335 /** 5336 * Returns true if the key is used for keyboard navigation. 5337 * @param keyEvent The key event. 5338 * @return True if the key is used for keyboard navigation. 5339 */ 5340 private static boolean isNavigationKey(KeyEvent keyEvent) { 5341 switch (keyEvent.getKeyCode()) { 5342 case KeyEvent.KEYCODE_DPAD_LEFT: 5343 case KeyEvent.KEYCODE_DPAD_RIGHT: 5344 case KeyEvent.KEYCODE_DPAD_UP: 5345 case KeyEvent.KEYCODE_DPAD_DOWN: 5346 case KeyEvent.KEYCODE_DPAD_CENTER: 5347 case KeyEvent.KEYCODE_PAGE_UP: 5348 case KeyEvent.KEYCODE_PAGE_DOWN: 5349 case KeyEvent.KEYCODE_MOVE_HOME: 5350 case KeyEvent.KEYCODE_MOVE_END: 5351 case KeyEvent.KEYCODE_TAB: 5352 case KeyEvent.KEYCODE_SPACE: 5353 case KeyEvent.KEYCODE_ENTER: 5354 return true; 5355 } 5356 return false; 5357 } 5358 5359 /** 5360 * Returns true if the key is used for typing. 5361 * @param keyEvent The key event. 5362 * @return True if the key is used for typing. 5363 */ 5364 private static boolean isTypingKey(KeyEvent keyEvent) { 5365 return keyEvent.getUnicodeChar() > 0; 5366 } 5367 5368 /** 5369 * See if the key event means we should leave touch mode (and leave touch mode if so). 5370 * @param event The key event. 5371 * @return Whether this key event should be consumed (meaning the act of 5372 * leaving touch mode alone is considered the event). 5373 */ 5374 private boolean checkForLeavingTouchModeAndConsume(KeyEvent event) { 5375 // Only relevant in touch mode. 5376 if (!mAttachInfo.mInTouchMode) { 5377 return false; 5378 } 5379 5380 // Only consider leaving touch mode on DOWN or MULTIPLE actions, never on UP. 5381 final int action = event.getAction(); 5382 if (action != KeyEvent.ACTION_DOWN && action != KeyEvent.ACTION_MULTIPLE) { 5383 return false; 5384 } 5385 5386 // Don't leave touch mode if the IME told us not to. 5387 if ((event.getFlags() & KeyEvent.FLAG_KEEP_TOUCH_MODE) != 0) { 5388 return false; 5389 } 5390 5391 // If the key can be used for keyboard navigation then leave touch mode 5392 // and select a focused view if needed (in ensureTouchMode). 5393 // When a new focused view is selected, we consume the navigation key because 5394 // navigation doesn't make much sense unless a view already has focus so 5395 // the key's purpose is to set focus. 5396 if (isNavigationKey(event)) { 5397 return ensureTouchMode(false); 5398 } 5399 5400 // If the key can be used for typing then leave touch mode 5401 // and select a focused view if needed (in ensureTouchMode). 5402 // Always allow the view to process the typing key. 5403 if (isTypingKey(event)) { 5404 ensureTouchMode(false); 5405 return false; 5406 } 5407 5408 return false; 5409 } 5410 5411 /* drag/drop */ 5412 void setLocalDragState(Object obj) { 5413 mLocalDragState = obj; 5414 } 5415 5416 private void handleDragEvent(DragEvent event) { 5417 // From the root, only drag start/end/location are dispatched. entered/exited 5418 // are determined and dispatched by the viewgroup hierarchy, who then report 5419 // that back here for ultimate reporting back to the framework. 5420 if (mView != null && mAdded) { 5421 final int what = event.mAction; 5422 5423 if (what == DragEvent.ACTION_DRAG_EXITED) { 5424 // A direct EXITED event means that the window manager knows we've just crossed 5425 // a window boundary, so the current drag target within this one must have 5426 // just been exited. Send it the usual notifications and then we're done 5427 // for now. 5428 mView.dispatchDragEvent(event); 5429 } else { 5430 // Cache the drag description when the operation starts, then fill it in 5431 // on subsequent calls as a convenience 5432 if (what == DragEvent.ACTION_DRAG_STARTED) { 5433 mCurrentDragView = null; // Start the current-recipient tracking 5434 mDragDescription = event.mClipDescription; 5435 } else { 5436 event.mClipDescription = mDragDescription; 5437 } 5438 5439 // For events with a [screen] location, translate into window coordinates 5440 if ((what == DragEvent.ACTION_DRAG_LOCATION) || (what == DragEvent.ACTION_DROP)) { 5441 mDragPoint.set(event.mX, event.mY); 5442 if (mTranslator != null) { 5443 mTranslator.translatePointInScreenToAppWindow(mDragPoint); 5444 } 5445 5446 if (mCurScrollY != 0) { 5447 mDragPoint.offset(0, mCurScrollY); 5448 } 5449 5450 event.mX = mDragPoint.x; 5451 event.mY = mDragPoint.y; 5452 } 5453 5454 // Remember who the current drag target is pre-dispatch 5455 final View prevDragView = mCurrentDragView; 5456 5457 // Now dispatch the drag/drop event 5458 boolean result = mView.dispatchDragEvent(event); 5459 5460 // If we changed apparent drag target, tell the OS about it 5461 if (prevDragView != mCurrentDragView) { 5462 try { 5463 if (prevDragView != null) { 5464 mWindowSession.dragRecipientExited(mWindow); 5465 } 5466 if (mCurrentDragView != null) { 5467 mWindowSession.dragRecipientEntered(mWindow); 5468 } 5469 } catch (RemoteException e) { 5470 Slog.e(mTag, "Unable to note drag target change"); 5471 } 5472 } 5473 5474 // Report the drop result when we're done 5475 if (what == DragEvent.ACTION_DROP) { 5476 mDragDescription = null; 5477 try { 5478 Log.i(mTag, "Reporting drop result: " + result); 5479 mWindowSession.reportDropResult(mWindow, result); 5480 } catch (RemoteException e) { 5481 Log.e(mTag, "Unable to report drop result"); 5482 } 5483 } 5484 5485 // When the drag operation ends, reset drag-related state 5486 if (what == DragEvent.ACTION_DRAG_ENDED) { 5487 setLocalDragState(null); 5488 mAttachInfo.mDragToken = null; 5489 if (mAttachInfo.mDragSurface != null) { 5490 mAttachInfo.mDragSurface.release(); 5491 mAttachInfo.mDragSurface = null; 5492 } 5493 } 5494 } 5495 } 5496 event.recycle(); 5497 } 5498 5499 public void handleDispatchSystemUiVisibilityChanged(SystemUiVisibilityInfo args) { 5500 if (mSeq != args.seq) { 5501 // The sequence has changed, so we need to update our value and make 5502 // sure to do a traversal afterward so the window manager is given our 5503 // most recent data. 5504 mSeq = args.seq; 5505 mAttachInfo.mForceReportNewAttributes = true; 5506 scheduleTraversals(); 5507 } 5508 if (mView == null) return; 5509 if (args.localChanges != 0) { 5510 mView.updateLocalSystemUiVisibility(args.localValue, args.localChanges); 5511 } 5512 5513 int visibility = args.globalVisibility&View.SYSTEM_UI_CLEARABLE_FLAGS; 5514 if (visibility != mAttachInfo.mGlobalSystemUiVisibility) { 5515 mAttachInfo.mGlobalSystemUiVisibility = visibility; 5516 mView.dispatchSystemUiVisibilityChanged(visibility); 5517 } 5518 } 5519 5520 public void handleDispatchWindowShown() { 5521 mAttachInfo.mTreeObserver.dispatchOnWindowShown(); 5522 } 5523 5524 public void handleRequestKeyboardShortcuts(IResultReceiver receiver, int deviceId) { 5525 Bundle data = new Bundle(); 5526 ArrayList<KeyboardShortcutGroup> list = new ArrayList<>(); 5527 if (mView != null) { 5528 mView.requestKeyboardShortcuts(list, deviceId); 5529 } 5530 data.putParcelableArrayList(WindowManager.PARCEL_KEY_SHORTCUTS_ARRAY, list); 5531 try { 5532 receiver.send(0, data); 5533 } catch (RemoteException e) { 5534 } 5535 } 5536 5537 public void getLastTouchPoint(Point outLocation) { 5538 outLocation.x = (int) mLastTouchPoint.x; 5539 outLocation.y = (int) mLastTouchPoint.y; 5540 } 5541 5542 public int getLastTouchSource() { 5543 return mLastTouchSource; 5544 } 5545 5546 public void setDragFocus(View newDragTarget) { 5547 if (mCurrentDragView != newDragTarget) { 5548 mCurrentDragView = newDragTarget; 5549 } 5550 } 5551 5552 private AudioManager getAudioManager() { 5553 if (mView == null) { 5554 throw new IllegalStateException("getAudioManager called when there is no mView"); 5555 } 5556 if (mAudioManager == null) { 5557 mAudioManager = (AudioManager) mView.getContext().getSystemService(Context.AUDIO_SERVICE); 5558 } 5559 return mAudioManager; 5560 } 5561 5562 public AccessibilityInteractionController getAccessibilityInteractionController() { 5563 if (mView == null) { 5564 throw new IllegalStateException("getAccessibilityInteractionController" 5565 + " called when there is no mView"); 5566 } 5567 if (mAccessibilityInteractionController == null) { 5568 mAccessibilityInteractionController = new AccessibilityInteractionController(this); 5569 } 5570 return mAccessibilityInteractionController; 5571 } 5572 5573 private int relayoutWindow(WindowManager.LayoutParams params, int viewVisibility, 5574 boolean insetsPending) throws RemoteException { 5575 5576 float appScale = mAttachInfo.mApplicationScale; 5577 boolean restore = false; 5578 if (params != null && mTranslator != null) { 5579 restore = true; 5580 params.backup(); 5581 mTranslator.translateWindowLayout(params); 5582 } 5583 if (params != null) { 5584 if (DBG) Log.d(mTag, "WindowLayout in layoutWindow:" + params); 5585 } 5586 mPendingConfiguration.seq = 0; 5587 //Log.d(mTag, ">>>>>> CALLING relayout"); 5588 if (params != null && mOrigWindowType != params.type) { 5589 // For compatibility with old apps, don't crash here. 5590 if (mTargetSdkVersion < Build.VERSION_CODES.ICE_CREAM_SANDWICH) { 5591 Slog.w(mTag, "Window type can not be changed after " 5592 + "the window is added; ignoring change of " + mView); 5593 params.type = mOrigWindowType; 5594 } 5595 } 5596 int relayoutResult = mWindowSession.relayout( 5597 mWindow, mSeq, params, 5598 (int) (mView.getMeasuredWidth() * appScale + 0.5f), 5599 (int) (mView.getMeasuredHeight() * appScale + 0.5f), 5600 viewVisibility, insetsPending ? WindowManagerGlobal.RELAYOUT_INSETS_PENDING : 0, 5601 mWinFrame, mPendingOverscanInsets, mPendingContentInsets, mPendingVisibleInsets, 5602 mPendingStableInsets, mPendingOutsets, mPendingBackDropFrame, mPendingConfiguration, 5603 mSurface); 5604 5605 mPendingAlwaysConsumeNavBar = 5606 (relayoutResult & WindowManagerGlobal.RELAYOUT_RES_CONSUME_ALWAYS_NAV_BAR) != 0; 5607 5608 //Log.d(mTag, "<<<<<< BACK FROM relayout"); 5609 if (restore) { 5610 params.restore(); 5611 } 5612 5613 if (mTranslator != null) { 5614 mTranslator.translateRectInScreenToAppWinFrame(mWinFrame); 5615 mTranslator.translateRectInScreenToAppWindow(mPendingOverscanInsets); 5616 mTranslator.translateRectInScreenToAppWindow(mPendingContentInsets); 5617 mTranslator.translateRectInScreenToAppWindow(mPendingVisibleInsets); 5618 mTranslator.translateRectInScreenToAppWindow(mPendingStableInsets); 5619 } 5620 return relayoutResult; 5621 } 5622 5623 /** 5624 * {@inheritDoc} 5625 */ 5626 @Override 5627 public void playSoundEffect(int effectId) { 5628 checkThread(); 5629 5630 try { 5631 final AudioManager audioManager = getAudioManager(); 5632 5633 switch (effectId) { 5634 case SoundEffectConstants.CLICK: 5635 audioManager.playSoundEffect(AudioManager.FX_KEY_CLICK); 5636 return; 5637 case SoundEffectConstants.NAVIGATION_DOWN: 5638 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_DOWN); 5639 return; 5640 case SoundEffectConstants.NAVIGATION_LEFT: 5641 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_LEFT); 5642 return; 5643 case SoundEffectConstants.NAVIGATION_RIGHT: 5644 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_RIGHT); 5645 return; 5646 case SoundEffectConstants.NAVIGATION_UP: 5647 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_UP); 5648 return; 5649 default: 5650 throw new IllegalArgumentException("unknown effect id " + effectId + 5651 " not defined in " + SoundEffectConstants.class.getCanonicalName()); 5652 } 5653 } catch (IllegalStateException e) { 5654 // Exception thrown by getAudioManager() when mView is null 5655 Log.e(mTag, "FATAL EXCEPTION when attempting to play sound effect: " + e); 5656 e.printStackTrace(); 5657 } 5658 } 5659 5660 /** 5661 * {@inheritDoc} 5662 */ 5663 @Override 5664 public boolean performHapticFeedback(int effectId, boolean always) { 5665 try { 5666 return mWindowSession.performHapticFeedback(mWindow, effectId, always); 5667 } catch (RemoteException e) { 5668 return false; 5669 } 5670 } 5671 5672 /** 5673 * {@inheritDoc} 5674 */ 5675 @Override 5676 public View focusSearch(View focused, int direction) { 5677 checkThread(); 5678 if (!(mView instanceof ViewGroup)) { 5679 return null; 5680 } 5681 return FocusFinder.getInstance().findNextFocus((ViewGroup) mView, focused, direction); 5682 } 5683 5684 public void debug() { 5685 mView.debug(); 5686 } 5687 5688 public void dump(String prefix, FileDescriptor fd, PrintWriter writer, String[] args) { 5689 String innerPrefix = prefix + " "; 5690 writer.print(prefix); writer.println("ViewRoot:"); 5691 writer.print(innerPrefix); writer.print("mAdded="); writer.print(mAdded); 5692 writer.print(" mRemoved="); writer.println(mRemoved); 5693 writer.print(innerPrefix); writer.print("mConsumeBatchedInputScheduled="); 5694 writer.println(mConsumeBatchedInputScheduled); 5695 writer.print(innerPrefix); writer.print("mConsumeBatchedInputImmediatelyScheduled="); 5696 writer.println(mConsumeBatchedInputImmediatelyScheduled); 5697 writer.print(innerPrefix); writer.print("mPendingInputEventCount="); 5698 writer.println(mPendingInputEventCount); 5699 writer.print(innerPrefix); writer.print("mProcessInputEventsScheduled="); 5700 writer.println(mProcessInputEventsScheduled); 5701 writer.print(innerPrefix); writer.print("mTraversalScheduled="); 5702 writer.print(mTraversalScheduled); 5703 writer.print(innerPrefix); writer.print("mIsAmbientMode="); 5704 writer.print(mIsAmbientMode); 5705 if (mTraversalScheduled) { 5706 writer.print(" (barrier="); writer.print(mTraversalBarrier); writer.println(")"); 5707 } else { 5708 writer.println(); 5709 } 5710 mFirstInputStage.dump(innerPrefix, writer); 5711 5712 mChoreographer.dump(prefix, writer); 5713 5714 writer.print(prefix); writer.println("View Hierarchy:"); 5715 dumpViewHierarchy(innerPrefix, writer, mView); 5716 } 5717 5718 private void dumpViewHierarchy(String prefix, PrintWriter writer, View view) { 5719 writer.print(prefix); 5720 if (view == null) { 5721 writer.println("null"); 5722 return; 5723 } 5724 writer.println(view.toString()); 5725 if (!(view instanceof ViewGroup)) { 5726 return; 5727 } 5728 ViewGroup grp = (ViewGroup)view; 5729 final int N = grp.getChildCount(); 5730 if (N <= 0) { 5731 return; 5732 } 5733 prefix = prefix + " "; 5734 for (int i=0; i<N; i++) { 5735 dumpViewHierarchy(prefix, writer, grp.getChildAt(i)); 5736 } 5737 } 5738 5739 public void dumpGfxInfo(int[] info) { 5740 info[0] = info[1] = 0; 5741 if (mView != null) { 5742 getGfxInfo(mView, info); 5743 } 5744 } 5745 5746 private static void getGfxInfo(View view, int[] info) { 5747 RenderNode renderNode = view.mRenderNode; 5748 info[0]++; 5749 if (renderNode != null) { 5750 info[1] += renderNode.getDebugSize(); 5751 } 5752 5753 if (view instanceof ViewGroup) { 5754 ViewGroup group = (ViewGroup) view; 5755 5756 int count = group.getChildCount(); 5757 for (int i = 0; i < count; i++) { 5758 getGfxInfo(group.getChildAt(i), info); 5759 } 5760 } 5761 } 5762 5763 /** 5764 * @param immediate True, do now if not in traversal. False, put on queue and do later. 5765 * @return True, request has been queued. False, request has been completed. 5766 */ 5767 boolean die(boolean immediate) { 5768 // Make sure we do execute immediately if we are in the middle of a traversal or the damage 5769 // done by dispatchDetachedFromWindow will cause havoc on return. 5770 if (immediate && !mIsInTraversal) { 5771 doDie(); 5772 return false; 5773 } 5774 5775 if (!mIsDrawing) { 5776 destroyHardwareRenderer(); 5777 } else { 5778 Log.e(mTag, "Attempting to destroy the window while drawing!\n" + 5779 " window=" + this + ", title=" + mWindowAttributes.getTitle()); 5780 } 5781 mHandler.sendEmptyMessage(MSG_DIE); 5782 return true; 5783 } 5784 5785 void doDie() { 5786 checkThread(); 5787 if (LOCAL_LOGV) Log.v(mTag, "DIE in " + this + " of " + mSurface); 5788 synchronized (this) { 5789 if (mRemoved) { 5790 return; 5791 } 5792 mRemoved = true; 5793 if (mAdded) { 5794 dispatchDetachedFromWindow(); 5795 } 5796 5797 if (mAdded && !mFirst) { 5798 destroyHardwareRenderer(); 5799 5800 if (mView != null) { 5801 int viewVisibility = mView.getVisibility(); 5802 boolean viewVisibilityChanged = mViewVisibility != viewVisibility; 5803 if (mWindowAttributesChanged || viewVisibilityChanged) { 5804 // If layout params have been changed, first give them 5805 // to the window manager to make sure it has the correct 5806 // animation info. 5807 try { 5808 if ((relayoutWindow(mWindowAttributes, viewVisibility, false) 5809 & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 5810 mWindowSession.finishDrawing(mWindow); 5811 } 5812 } catch (RemoteException e) { 5813 } 5814 } 5815 5816 mSurface.release(); 5817 } 5818 } 5819 5820 mAdded = false; 5821 } 5822 WindowManagerGlobal.getInstance().doRemoveView(this); 5823 } 5824 5825 public void requestUpdateConfiguration(Configuration config) { 5826 Message msg = mHandler.obtainMessage(MSG_UPDATE_CONFIGURATION, config); 5827 mHandler.sendMessage(msg); 5828 } 5829 5830 public void loadSystemProperties() { 5831 mHandler.post(new Runnable() { 5832 @Override 5833 public void run() { 5834 // Profiling 5835 mProfileRendering = SystemProperties.getBoolean(PROPERTY_PROFILE_RENDERING, false); 5836 profileRendering(mAttachInfo.mHasWindowFocus); 5837 5838 // Hardware rendering 5839 if (mAttachInfo.mHardwareRenderer != null) { 5840 if (mAttachInfo.mHardwareRenderer.loadSystemProperties()) { 5841 invalidate(); 5842 } 5843 } 5844 5845 // Layout debugging 5846 boolean layout = SystemProperties.getBoolean(View.DEBUG_LAYOUT_PROPERTY, false); 5847 if (layout != mAttachInfo.mDebugLayout) { 5848 mAttachInfo.mDebugLayout = layout; 5849 if (!mHandler.hasMessages(MSG_INVALIDATE_WORLD)) { 5850 mHandler.sendEmptyMessageDelayed(MSG_INVALIDATE_WORLD, 200); 5851 } 5852 } 5853 } 5854 }); 5855 } 5856 5857 private void destroyHardwareRenderer() { 5858 ThreadedRenderer hardwareRenderer = mAttachInfo.mHardwareRenderer; 5859 5860 if (hardwareRenderer != null) { 5861 if (mView != null) { 5862 hardwareRenderer.destroyHardwareResources(mView); 5863 } 5864 hardwareRenderer.destroy(); 5865 hardwareRenderer.setRequested(false); 5866 5867 mAttachInfo.mHardwareRenderer = null; 5868 mAttachInfo.mHardwareAccelerated = false; 5869 } 5870 } 5871 5872 public void dispatchResized(Rect frame, Rect overscanInsets, Rect contentInsets, 5873 Rect visibleInsets, Rect stableInsets, Rect outsets, boolean reportDraw, 5874 Configuration newConfig, Rect backDropFrame, boolean forceLayout, 5875 boolean alwaysConsumeNavBar) { 5876 if (DEBUG_LAYOUT) Log.v(mTag, "Resizing " + this + ": frame=" + frame.toShortString() 5877 + " contentInsets=" + contentInsets.toShortString() 5878 + " visibleInsets=" + visibleInsets.toShortString() 5879 + " reportDraw=" + reportDraw 5880 + " backDropFrame=" + backDropFrame); 5881 5882 // Tell all listeners that we are resizing the window so that the chrome can get 5883 // updated as fast as possible on a separate thread, 5884 if (mDragResizing) { 5885 boolean fullscreen = frame.equals(backDropFrame); 5886 synchronized (mWindowCallbacks) { 5887 for (int i = mWindowCallbacks.size() - 1; i >= 0; i--) { 5888 mWindowCallbacks.get(i).onWindowSizeIsChanging(backDropFrame, fullscreen, 5889 visibleInsets, stableInsets); 5890 } 5891 } 5892 } 5893 5894 Message msg = mHandler.obtainMessage(reportDraw ? MSG_RESIZED_REPORT : MSG_RESIZED); 5895 if (mTranslator != null) { 5896 mTranslator.translateRectInScreenToAppWindow(frame); 5897 mTranslator.translateRectInScreenToAppWindow(overscanInsets); 5898 mTranslator.translateRectInScreenToAppWindow(contentInsets); 5899 mTranslator.translateRectInScreenToAppWindow(visibleInsets); 5900 } 5901 SomeArgs args = SomeArgs.obtain(); 5902 final boolean sameProcessCall = (Binder.getCallingPid() == android.os.Process.myPid()); 5903 args.arg1 = sameProcessCall ? new Rect(frame) : frame; 5904 args.arg2 = sameProcessCall ? new Rect(contentInsets) : contentInsets; 5905 args.arg3 = sameProcessCall ? new Rect(visibleInsets) : visibleInsets; 5906 args.arg4 = sameProcessCall && newConfig != null ? new Configuration(newConfig) : newConfig; 5907 args.arg5 = sameProcessCall ? new Rect(overscanInsets) : overscanInsets; 5908 args.arg6 = sameProcessCall ? new Rect(stableInsets) : stableInsets; 5909 args.arg7 = sameProcessCall ? new Rect(outsets) : outsets; 5910 args.arg8 = sameProcessCall ? new Rect(backDropFrame) : backDropFrame; 5911 args.argi1 = forceLayout ? 1 : 0; 5912 args.argi2 = alwaysConsumeNavBar ? 1 : 0; 5913 msg.obj = args; 5914 mHandler.sendMessage(msg); 5915 } 5916 5917 public void dispatchMoved(int newX, int newY) { 5918 if (DEBUG_LAYOUT) Log.v(mTag, "Window moved " + this + ": newX=" + newX + " newY=" + newY); 5919 if (mTranslator != null) { 5920 PointF point = new PointF(newX, newY); 5921 mTranslator.translatePointInScreenToAppWindow(point); 5922 newX = (int) (point.x + 0.5); 5923 newY = (int) (point.y + 0.5); 5924 } 5925 Message msg = mHandler.obtainMessage(MSG_WINDOW_MOVED, newX, newY); 5926 mHandler.sendMessage(msg); 5927 } 5928 5929 /** 5930 * Represents a pending input event that is waiting in a queue. 5931 * 5932 * Input events are processed in serial order by the timestamp specified by 5933 * {@link InputEvent#getEventTimeNano()}. In general, the input dispatcher delivers 5934 * one input event to the application at a time and waits for the application 5935 * to finish handling it before delivering the next one. 5936 * 5937 * However, because the application or IME can synthesize and inject multiple 5938 * key events at a time without going through the input dispatcher, we end up 5939 * needing a queue on the application's side. 5940 */ 5941 private static final class QueuedInputEvent { 5942 public static final int FLAG_DELIVER_POST_IME = 1 << 0; 5943 public static final int FLAG_DEFERRED = 1 << 1; 5944 public static final int FLAG_FINISHED = 1 << 2; 5945 public static final int FLAG_FINISHED_HANDLED = 1 << 3; 5946 public static final int FLAG_RESYNTHESIZED = 1 << 4; 5947 public static final int FLAG_UNHANDLED = 1 << 5; 5948 5949 public QueuedInputEvent mNext; 5950 5951 public InputEvent mEvent; 5952 public InputEventReceiver mReceiver; 5953 public int mFlags; 5954 5955 public boolean shouldSkipIme() { 5956 if ((mFlags & FLAG_DELIVER_POST_IME) != 0) { 5957 return true; 5958 } 5959 return mEvent instanceof MotionEvent 5960 && mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER); 5961 } 5962 5963 public boolean shouldSendToSynthesizer() { 5964 if ((mFlags & FLAG_UNHANDLED) != 0) { 5965 return true; 5966 } 5967 5968 return false; 5969 } 5970 5971 @Override 5972 public String toString() { 5973 StringBuilder sb = new StringBuilder("QueuedInputEvent{flags="); 5974 boolean hasPrevious = false; 5975 hasPrevious = flagToString("DELIVER_POST_IME", FLAG_DELIVER_POST_IME, hasPrevious, sb); 5976 hasPrevious = flagToString("DEFERRED", FLAG_DEFERRED, hasPrevious, sb); 5977 hasPrevious = flagToString("FINISHED", FLAG_FINISHED, hasPrevious, sb); 5978 hasPrevious = flagToString("FINISHED_HANDLED", FLAG_FINISHED_HANDLED, hasPrevious, sb); 5979 hasPrevious = flagToString("RESYNTHESIZED", FLAG_RESYNTHESIZED, hasPrevious, sb); 5980 hasPrevious = flagToString("UNHANDLED", FLAG_UNHANDLED, hasPrevious, sb); 5981 if (!hasPrevious) { 5982 sb.append("0"); 5983 } 5984 sb.append(", hasNextQueuedEvent=" + (mEvent != null ? "true" : "false")); 5985 sb.append(", hasInputEventReceiver=" + (mReceiver != null ? "true" : "false")); 5986 sb.append(", mEvent=" + mEvent + "}"); 5987 return sb.toString(); 5988 } 5989 5990 private boolean flagToString(String name, int flag, 5991 boolean hasPrevious, StringBuilder sb) { 5992 if ((mFlags & flag) != 0) { 5993 if (hasPrevious) { 5994 sb.append("|"); 5995 } 5996 sb.append(name); 5997 return true; 5998 } 5999 return hasPrevious; 6000 } 6001 } 6002 6003 private QueuedInputEvent obtainQueuedInputEvent(InputEvent event, 6004 InputEventReceiver receiver, int flags) { 6005 QueuedInputEvent q = mQueuedInputEventPool; 6006 if (q != null) { 6007 mQueuedInputEventPoolSize -= 1; 6008 mQueuedInputEventPool = q.mNext; 6009 q.mNext = null; 6010 } else { 6011 q = new QueuedInputEvent(); 6012 } 6013 6014 q.mEvent = event; 6015 q.mReceiver = receiver; 6016 q.mFlags = flags; 6017 return q; 6018 } 6019 6020 private void recycleQueuedInputEvent(QueuedInputEvent q) { 6021 q.mEvent = null; 6022 q.mReceiver = null; 6023 6024 if (mQueuedInputEventPoolSize < MAX_QUEUED_INPUT_EVENT_POOL_SIZE) { 6025 mQueuedInputEventPoolSize += 1; 6026 q.mNext = mQueuedInputEventPool; 6027 mQueuedInputEventPool = q; 6028 } 6029 } 6030 6031 void enqueueInputEvent(InputEvent event) { 6032 enqueueInputEvent(event, null, 0, false); 6033 } 6034 6035 void enqueueInputEvent(InputEvent event, 6036 InputEventReceiver receiver, int flags, boolean processImmediately) { 6037 adjustInputEventForCompatibility(event); 6038 QueuedInputEvent q = obtainQueuedInputEvent(event, receiver, flags); 6039 6040 // Always enqueue the input event in order, regardless of its time stamp. 6041 // We do this because the application or the IME may inject key events 6042 // in response to touch events and we want to ensure that the injected keys 6043 // are processed in the order they were received and we cannot trust that 6044 // the time stamp of injected events are monotonic. 6045 QueuedInputEvent last = mPendingInputEventTail; 6046 if (last == null) { 6047 mPendingInputEventHead = q; 6048 mPendingInputEventTail = q; 6049 } else { 6050 last.mNext = q; 6051 mPendingInputEventTail = q; 6052 } 6053 mPendingInputEventCount += 1; 6054 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 6055 mPendingInputEventCount); 6056 6057 if (processImmediately) { 6058 doProcessInputEvents(); 6059 } else { 6060 scheduleProcessInputEvents(); 6061 } 6062 } 6063 6064 private void scheduleProcessInputEvents() { 6065 if (!mProcessInputEventsScheduled) { 6066 mProcessInputEventsScheduled = true; 6067 Message msg = mHandler.obtainMessage(MSG_PROCESS_INPUT_EVENTS); 6068 msg.setAsynchronous(true); 6069 mHandler.sendMessage(msg); 6070 } 6071 } 6072 6073 void doProcessInputEvents() { 6074 // Deliver all pending input events in the queue. 6075 while (mPendingInputEventHead != null) { 6076 QueuedInputEvent q = mPendingInputEventHead; 6077 mPendingInputEventHead = q.mNext; 6078 if (mPendingInputEventHead == null) { 6079 mPendingInputEventTail = null; 6080 } 6081 q.mNext = null; 6082 6083 mPendingInputEventCount -= 1; 6084 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 6085 mPendingInputEventCount); 6086 6087 long eventTime = q.mEvent.getEventTimeNano(); 6088 long oldestEventTime = eventTime; 6089 if (q.mEvent instanceof MotionEvent) { 6090 MotionEvent me = (MotionEvent)q.mEvent; 6091 if (me.getHistorySize() > 0) { 6092 oldestEventTime = me.getHistoricalEventTimeNano(0); 6093 } 6094 } 6095 mChoreographer.mFrameInfo.updateInputEventTime(eventTime, oldestEventTime); 6096 6097 deliverInputEvent(q); 6098 } 6099 6100 // We are done processing all input events that we can process right now 6101 // so we can clear the pending flag immediately. 6102 if (mProcessInputEventsScheduled) { 6103 mProcessInputEventsScheduled = false; 6104 mHandler.removeMessages(MSG_PROCESS_INPUT_EVENTS); 6105 } 6106 } 6107 6108 private void deliverInputEvent(QueuedInputEvent q) { 6109 Trace.asyncTraceBegin(Trace.TRACE_TAG_VIEW, "deliverInputEvent", 6110 q.mEvent.getSequenceNumber()); 6111 if (mInputEventConsistencyVerifier != null) { 6112 mInputEventConsistencyVerifier.onInputEvent(q.mEvent, 0); 6113 } 6114 6115 InputStage stage; 6116 if (q.shouldSendToSynthesizer()) { 6117 stage = mSyntheticInputStage; 6118 } else { 6119 stage = q.shouldSkipIme() ? mFirstPostImeInputStage : mFirstInputStage; 6120 } 6121 6122 if (stage != null) { 6123 stage.deliver(q); 6124 } else { 6125 finishInputEvent(q); 6126 } 6127 } 6128 6129 private void finishInputEvent(QueuedInputEvent q) { 6130 Trace.asyncTraceEnd(Trace.TRACE_TAG_VIEW, "deliverInputEvent", 6131 q.mEvent.getSequenceNumber()); 6132 6133 if (q.mReceiver != null) { 6134 boolean handled = (q.mFlags & QueuedInputEvent.FLAG_FINISHED_HANDLED) != 0; 6135 q.mReceiver.finishInputEvent(q.mEvent, handled); 6136 } else { 6137 q.mEvent.recycleIfNeededAfterDispatch(); 6138 } 6139 6140 recycleQueuedInputEvent(q); 6141 } 6142 6143 private void adjustInputEventForCompatibility(InputEvent e) { 6144 if (mTargetSdkVersion < Build.VERSION_CODES.M && e instanceof MotionEvent) { 6145 MotionEvent motion = (MotionEvent) e; 6146 final int mask = 6147 MotionEvent.BUTTON_STYLUS_PRIMARY | MotionEvent.BUTTON_STYLUS_SECONDARY; 6148 final int buttonState = motion.getButtonState(); 6149 final int compatButtonState = (buttonState & mask) >> 4; 6150 if (compatButtonState != 0) { 6151 motion.setButtonState(buttonState | compatButtonState); 6152 } 6153 } 6154 } 6155 6156 static boolean isTerminalInputEvent(InputEvent event) { 6157 if (event instanceof KeyEvent) { 6158 final KeyEvent keyEvent = (KeyEvent)event; 6159 return keyEvent.getAction() == KeyEvent.ACTION_UP; 6160 } else { 6161 final MotionEvent motionEvent = (MotionEvent)event; 6162 final int action = motionEvent.getAction(); 6163 return action == MotionEvent.ACTION_UP 6164 || action == MotionEvent.ACTION_CANCEL 6165 || action == MotionEvent.ACTION_HOVER_EXIT; 6166 } 6167 } 6168 6169 void scheduleConsumeBatchedInput() { 6170 if (!mConsumeBatchedInputScheduled) { 6171 mConsumeBatchedInputScheduled = true; 6172 mChoreographer.postCallback(Choreographer.CALLBACK_INPUT, 6173 mConsumedBatchedInputRunnable, null); 6174 } 6175 } 6176 6177 void unscheduleConsumeBatchedInput() { 6178 if (mConsumeBatchedInputScheduled) { 6179 mConsumeBatchedInputScheduled = false; 6180 mChoreographer.removeCallbacks(Choreographer.CALLBACK_INPUT, 6181 mConsumedBatchedInputRunnable, null); 6182 } 6183 } 6184 6185 void scheduleConsumeBatchedInputImmediately() { 6186 if (!mConsumeBatchedInputImmediatelyScheduled) { 6187 unscheduleConsumeBatchedInput(); 6188 mConsumeBatchedInputImmediatelyScheduled = true; 6189 mHandler.post(mConsumeBatchedInputImmediatelyRunnable); 6190 } 6191 } 6192 6193 void doConsumeBatchedInput(long frameTimeNanos) { 6194 if (mConsumeBatchedInputScheduled) { 6195 mConsumeBatchedInputScheduled = false; 6196 if (mInputEventReceiver != null) { 6197 if (mInputEventReceiver.consumeBatchedInputEvents(frameTimeNanos) 6198 && frameTimeNanos != -1) { 6199 // If we consumed a batch here, we want to go ahead and schedule the 6200 // consumption of batched input events on the next frame. Otherwise, we would 6201 // wait until we have more input events pending and might get starved by other 6202 // things occurring in the process. If the frame time is -1, however, then 6203 // we're in a non-batching mode, so there's no need to schedule this. 6204 scheduleConsumeBatchedInput(); 6205 } 6206 } 6207 doProcessInputEvents(); 6208 } 6209 } 6210 6211 final class TraversalRunnable implements Runnable { 6212 @Override 6213 public void run() { 6214 doTraversal(); 6215 } 6216 } 6217 final TraversalRunnable mTraversalRunnable = new TraversalRunnable(); 6218 6219 final class WindowInputEventReceiver extends InputEventReceiver { 6220 public WindowInputEventReceiver(InputChannel inputChannel, Looper looper) { 6221 super(inputChannel, looper); 6222 } 6223 6224 @Override 6225 public void onInputEvent(InputEvent event) { 6226 enqueueInputEvent(event, this, 0, true); 6227 } 6228 6229 @Override 6230 public void onBatchedInputEventPending() { 6231 if (mUnbufferedInputDispatch) { 6232 super.onBatchedInputEventPending(); 6233 } else { 6234 scheduleConsumeBatchedInput(); 6235 } 6236 } 6237 6238 @Override 6239 public void dispose() { 6240 unscheduleConsumeBatchedInput(); 6241 super.dispose(); 6242 } 6243 } 6244 WindowInputEventReceiver mInputEventReceiver; 6245 6246 final class ConsumeBatchedInputRunnable implements Runnable { 6247 @Override 6248 public void run() { 6249 doConsumeBatchedInput(mChoreographer.getFrameTimeNanos()); 6250 } 6251 } 6252 final ConsumeBatchedInputRunnable mConsumedBatchedInputRunnable = 6253 new ConsumeBatchedInputRunnable(); 6254 boolean mConsumeBatchedInputScheduled; 6255 6256 final class ConsumeBatchedInputImmediatelyRunnable implements Runnable { 6257 @Override 6258 public void run() { 6259 doConsumeBatchedInput(-1); 6260 } 6261 } 6262 final ConsumeBatchedInputImmediatelyRunnable mConsumeBatchedInputImmediatelyRunnable = 6263 new ConsumeBatchedInputImmediatelyRunnable(); 6264 boolean mConsumeBatchedInputImmediatelyScheduled; 6265 6266 final class InvalidateOnAnimationRunnable implements Runnable { 6267 private boolean mPosted; 6268 private final ArrayList<View> mViews = new ArrayList<View>(); 6269 private final ArrayList<AttachInfo.InvalidateInfo> mViewRects = 6270 new ArrayList<AttachInfo.InvalidateInfo>(); 6271 private View[] mTempViews; 6272 private AttachInfo.InvalidateInfo[] mTempViewRects; 6273 6274 public void addView(View view) { 6275 synchronized (this) { 6276 mViews.add(view); 6277 postIfNeededLocked(); 6278 } 6279 } 6280 6281 public void addViewRect(AttachInfo.InvalidateInfo info) { 6282 synchronized (this) { 6283 mViewRects.add(info); 6284 postIfNeededLocked(); 6285 } 6286 } 6287 6288 public void removeView(View view) { 6289 synchronized (this) { 6290 mViews.remove(view); 6291 6292 for (int i = mViewRects.size(); i-- > 0; ) { 6293 AttachInfo.InvalidateInfo info = mViewRects.get(i); 6294 if (info.target == view) { 6295 mViewRects.remove(i); 6296 info.recycle(); 6297 } 6298 } 6299 6300 if (mPosted && mViews.isEmpty() && mViewRects.isEmpty()) { 6301 mChoreographer.removeCallbacks(Choreographer.CALLBACK_ANIMATION, this, null); 6302 mPosted = false; 6303 } 6304 } 6305 } 6306 6307 @Override 6308 public void run() { 6309 final int viewCount; 6310 final int viewRectCount; 6311 synchronized (this) { 6312 mPosted = false; 6313 6314 viewCount = mViews.size(); 6315 if (viewCount != 0) { 6316 mTempViews = mViews.toArray(mTempViews != null 6317 ? mTempViews : new View[viewCount]); 6318 mViews.clear(); 6319 } 6320 6321 viewRectCount = mViewRects.size(); 6322 if (viewRectCount != 0) { 6323 mTempViewRects = mViewRects.toArray(mTempViewRects != null 6324 ? mTempViewRects : new AttachInfo.InvalidateInfo[viewRectCount]); 6325 mViewRects.clear(); 6326 } 6327 } 6328 6329 for (int i = 0; i < viewCount; i++) { 6330 mTempViews[i].invalidate(); 6331 mTempViews[i] = null; 6332 } 6333 6334 for (int i = 0; i < viewRectCount; i++) { 6335 final View.AttachInfo.InvalidateInfo info = mTempViewRects[i]; 6336 info.target.invalidate(info.left, info.top, info.right, info.bottom); 6337 info.recycle(); 6338 } 6339 } 6340 6341 private void postIfNeededLocked() { 6342 if (!mPosted) { 6343 mChoreographer.postCallback(Choreographer.CALLBACK_ANIMATION, this, null); 6344 mPosted = true; 6345 } 6346 } 6347 } 6348 final InvalidateOnAnimationRunnable mInvalidateOnAnimationRunnable = 6349 new InvalidateOnAnimationRunnable(); 6350 6351 public void dispatchInvalidateDelayed(View view, long delayMilliseconds) { 6352 Message msg = mHandler.obtainMessage(MSG_INVALIDATE, view); 6353 mHandler.sendMessageDelayed(msg, delayMilliseconds); 6354 } 6355 6356 public void dispatchInvalidateRectDelayed(AttachInfo.InvalidateInfo info, 6357 long delayMilliseconds) { 6358 final Message msg = mHandler.obtainMessage(MSG_INVALIDATE_RECT, info); 6359 mHandler.sendMessageDelayed(msg, delayMilliseconds); 6360 } 6361 6362 public void dispatchInvalidateOnAnimation(View view) { 6363 mInvalidateOnAnimationRunnable.addView(view); 6364 } 6365 6366 public void dispatchInvalidateRectOnAnimation(AttachInfo.InvalidateInfo info) { 6367 mInvalidateOnAnimationRunnable.addViewRect(info); 6368 } 6369 6370 public void cancelInvalidate(View view) { 6371 mHandler.removeMessages(MSG_INVALIDATE, view); 6372 // fixme: might leak the AttachInfo.InvalidateInfo objects instead of returning 6373 // them to the pool 6374 mHandler.removeMessages(MSG_INVALIDATE_RECT, view); 6375 mInvalidateOnAnimationRunnable.removeView(view); 6376 } 6377 6378 public void dispatchInputEvent(InputEvent event) { 6379 dispatchInputEvent(event, null); 6380 } 6381 6382 public void dispatchInputEvent(InputEvent event, InputEventReceiver receiver) { 6383 SomeArgs args = SomeArgs.obtain(); 6384 args.arg1 = event; 6385 args.arg2 = receiver; 6386 Message msg = mHandler.obtainMessage(MSG_DISPATCH_INPUT_EVENT, args); 6387 msg.setAsynchronous(true); 6388 mHandler.sendMessage(msg); 6389 } 6390 6391 public void synthesizeInputEvent(InputEvent event) { 6392 Message msg = mHandler.obtainMessage(MSG_SYNTHESIZE_INPUT_EVENT, event); 6393 msg.setAsynchronous(true); 6394 mHandler.sendMessage(msg); 6395 } 6396 6397 public void dispatchKeyFromIme(KeyEvent event) { 6398 Message msg = mHandler.obtainMessage(MSG_DISPATCH_KEY_FROM_IME, event); 6399 msg.setAsynchronous(true); 6400 mHandler.sendMessage(msg); 6401 } 6402 6403 /** 6404 * Reinject unhandled {@link InputEvent}s in order to synthesize fallbacks events. 6405 * 6406 * Note that it is the responsibility of the caller of this API to recycle the InputEvent it 6407 * passes in. 6408 */ 6409 public void dispatchUnhandledInputEvent(InputEvent event) { 6410 if (event instanceof MotionEvent) { 6411 event = MotionEvent.obtain((MotionEvent) event); 6412 } 6413 synthesizeInputEvent(event); 6414 } 6415 6416 public void dispatchAppVisibility(boolean visible) { 6417 Message msg = mHandler.obtainMessage(MSG_DISPATCH_APP_VISIBILITY); 6418 msg.arg1 = visible ? 1 : 0; 6419 mHandler.sendMessage(msg); 6420 } 6421 6422 public void dispatchGetNewSurface() { 6423 Message msg = mHandler.obtainMessage(MSG_DISPATCH_GET_NEW_SURFACE); 6424 mHandler.sendMessage(msg); 6425 } 6426 6427 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 6428 Message msg = Message.obtain(); 6429 msg.what = MSG_WINDOW_FOCUS_CHANGED; 6430 msg.arg1 = hasFocus ? 1 : 0; 6431 msg.arg2 = inTouchMode ? 1 : 0; 6432 mHandler.sendMessage(msg); 6433 } 6434 6435 public void dispatchWindowShown() { 6436 mHandler.sendEmptyMessage(MSG_DISPATCH_WINDOW_SHOWN); 6437 } 6438 6439 public void dispatchCloseSystemDialogs(String reason) { 6440 Message msg = Message.obtain(); 6441 msg.what = MSG_CLOSE_SYSTEM_DIALOGS; 6442 msg.obj = reason; 6443 mHandler.sendMessage(msg); 6444 } 6445 6446 public void dispatchDragEvent(DragEvent event) { 6447 final int what; 6448 if (event.getAction() == DragEvent.ACTION_DRAG_LOCATION) { 6449 what = MSG_DISPATCH_DRAG_LOCATION_EVENT; 6450 mHandler.removeMessages(what); 6451 } else { 6452 what = MSG_DISPATCH_DRAG_EVENT; 6453 } 6454 Message msg = mHandler.obtainMessage(what, event); 6455 mHandler.sendMessage(msg); 6456 } 6457 6458 public void updatePointerIcon(float x, float y) { 6459 final int what = MSG_UPDATE_POINTER_ICON; 6460 mHandler.removeMessages(what); 6461 final long now = SystemClock.uptimeMillis(); 6462 final MotionEvent event = MotionEvent.obtain( 6463 0, now, MotionEvent.ACTION_HOVER_MOVE, x, y, 0); 6464 Message msg = mHandler.obtainMessage(what, event); 6465 mHandler.sendMessage(msg); 6466 } 6467 6468 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 6469 int localValue, int localChanges) { 6470 SystemUiVisibilityInfo args = new SystemUiVisibilityInfo(); 6471 args.seq = seq; 6472 args.globalVisibility = globalVisibility; 6473 args.localValue = localValue; 6474 args.localChanges = localChanges; 6475 mHandler.sendMessage(mHandler.obtainMessage(MSG_DISPATCH_SYSTEM_UI_VISIBILITY, args)); 6476 } 6477 6478 public void dispatchCheckFocus() { 6479 if (!mHandler.hasMessages(MSG_CHECK_FOCUS)) { 6480 // This will result in a call to checkFocus() below. 6481 mHandler.sendEmptyMessage(MSG_CHECK_FOCUS); 6482 } 6483 } 6484 6485 public void dispatchRequestKeyboardShortcuts(IResultReceiver receiver, int deviceId) { 6486 mHandler.obtainMessage( 6487 MSG_REQUEST_KEYBOARD_SHORTCUTS, deviceId, 0, receiver).sendToTarget(); 6488 } 6489 6490 /** 6491 * Post a callback to send a 6492 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 6493 * This event is send at most once every 6494 * {@link ViewConfiguration#getSendRecurringAccessibilityEventsInterval()}. 6495 */ 6496 private void postSendWindowContentChangedCallback(View source, int changeType) { 6497 if (mSendWindowContentChangedAccessibilityEvent == null) { 6498 mSendWindowContentChangedAccessibilityEvent = 6499 new SendWindowContentChangedAccessibilityEvent(); 6500 } 6501 mSendWindowContentChangedAccessibilityEvent.runOrPost(source, changeType); 6502 } 6503 6504 /** 6505 * Remove a posted callback to send a 6506 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 6507 */ 6508 private void removeSendWindowContentChangedCallback() { 6509 if (mSendWindowContentChangedAccessibilityEvent != null) { 6510 mHandler.removeCallbacks(mSendWindowContentChangedAccessibilityEvent); 6511 } 6512 } 6513 6514 @Override 6515 public boolean showContextMenuForChild(View originalView) { 6516 return false; 6517 } 6518 6519 @Override 6520 public boolean showContextMenuForChild(View originalView, float x, float y) { 6521 return false; 6522 } 6523 6524 @Override 6525 public ActionMode startActionModeForChild(View originalView, ActionMode.Callback callback) { 6526 return null; 6527 } 6528 6529 @Override 6530 public ActionMode startActionModeForChild( 6531 View originalView, ActionMode.Callback callback, int type) { 6532 return null; 6533 } 6534 6535 @Override 6536 public void createContextMenu(ContextMenu menu) { 6537 } 6538 6539 @Override 6540 public void childDrawableStateChanged(View child) { 6541 } 6542 6543 @Override 6544 public boolean requestSendAccessibilityEvent(View child, AccessibilityEvent event) { 6545 if (mView == null || mStopped || mPausedForTransition) { 6546 return false; 6547 } 6548 // Intercept accessibility focus events fired by virtual nodes to keep 6549 // track of accessibility focus position in such nodes. 6550 final int eventType = event.getEventType(); 6551 switch (eventType) { 6552 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUSED: { 6553 final long sourceNodeId = event.getSourceNodeId(); 6554 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 6555 sourceNodeId); 6556 View source = mView.findViewByAccessibilityId(accessibilityViewId); 6557 if (source != null) { 6558 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 6559 if (provider != null) { 6560 final int virtualNodeId = AccessibilityNodeInfo.getVirtualDescendantId( 6561 sourceNodeId); 6562 final AccessibilityNodeInfo node; 6563 if (virtualNodeId == AccessibilityNodeInfo.UNDEFINED_ITEM_ID) { 6564 node = provider.createAccessibilityNodeInfo( 6565 AccessibilityNodeProvider.HOST_VIEW_ID); 6566 } else { 6567 node = provider.createAccessibilityNodeInfo(virtualNodeId); 6568 } 6569 setAccessibilityFocus(source, node); 6570 } 6571 } 6572 } break; 6573 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUS_CLEARED: { 6574 final long sourceNodeId = event.getSourceNodeId(); 6575 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 6576 sourceNodeId); 6577 View source = mView.findViewByAccessibilityId(accessibilityViewId); 6578 if (source != null) { 6579 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 6580 if (provider != null) { 6581 setAccessibilityFocus(null, null); 6582 } 6583 } 6584 } break; 6585 6586 6587 case AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED: { 6588 handleWindowContentChangedEvent(event); 6589 } break; 6590 } 6591 mAccessibilityManager.sendAccessibilityEvent(event); 6592 return true; 6593 } 6594 6595 /** 6596 * Updates the focused virtual view, when necessary, in response to a 6597 * content changed event. 6598 * <p> 6599 * This is necessary to get updated bounds after a position change. 6600 * 6601 * @param event an accessibility event of type 6602 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} 6603 */ 6604 private void handleWindowContentChangedEvent(AccessibilityEvent event) { 6605 final View focusedHost = mAccessibilityFocusedHost; 6606 if (focusedHost == null || mAccessibilityFocusedVirtualView == null) { 6607 // No virtual view focused, nothing to do here. 6608 return; 6609 } 6610 6611 final AccessibilityNodeProvider provider = focusedHost.getAccessibilityNodeProvider(); 6612 if (provider == null) { 6613 // Error state: virtual view with no provider. Clear focus. 6614 mAccessibilityFocusedHost = null; 6615 mAccessibilityFocusedVirtualView = null; 6616 focusedHost.clearAccessibilityFocusNoCallbacks(); 6617 return; 6618 } 6619 6620 // We only care about change types that may affect the bounds of the 6621 // focused virtual view. 6622 final int changes = event.getContentChangeTypes(); 6623 if ((changes & AccessibilityEvent.CONTENT_CHANGE_TYPE_SUBTREE) == 0 6624 && changes != AccessibilityEvent.CONTENT_CHANGE_TYPE_UNDEFINED) { 6625 return; 6626 } 6627 6628 final long eventSourceNodeId = event.getSourceNodeId(); 6629 final int changedViewId = AccessibilityNodeInfo.getAccessibilityViewId(eventSourceNodeId); 6630 6631 // Search up the tree for subtree containment. 6632 boolean hostInSubtree = false; 6633 View root = mAccessibilityFocusedHost; 6634 while (root != null && !hostInSubtree) { 6635 if (changedViewId == root.getAccessibilityViewId()) { 6636 hostInSubtree = true; 6637 } else { 6638 final ViewParent parent = root.getParent(); 6639 if (parent instanceof View) { 6640 root = (View) parent; 6641 } else { 6642 root = null; 6643 } 6644 } 6645 } 6646 6647 // We care only about changes in subtrees containing the host view. 6648 if (!hostInSubtree) { 6649 return; 6650 } 6651 6652 final long focusedSourceNodeId = mAccessibilityFocusedVirtualView.getSourceNodeId(); 6653 int focusedChildId = AccessibilityNodeInfo.getVirtualDescendantId(focusedSourceNodeId); 6654 if (focusedChildId == AccessibilityNodeInfo.UNDEFINED_ITEM_ID) { 6655 // TODO: Should we clear the focused virtual view? 6656 focusedChildId = AccessibilityNodeProvider.HOST_VIEW_ID; 6657 } 6658 6659 // Refresh the node for the focused virtual view. 6660 final Rect oldBounds = mTempRect; 6661 mAccessibilityFocusedVirtualView.getBoundsInScreen(oldBounds); 6662 mAccessibilityFocusedVirtualView = provider.createAccessibilityNodeInfo(focusedChildId); 6663 if (mAccessibilityFocusedVirtualView == null) { 6664 // Error state: The node no longer exists. Clear focus. 6665 mAccessibilityFocusedHost = null; 6666 focusedHost.clearAccessibilityFocusNoCallbacks(); 6667 6668 // This will probably fail, but try to keep the provider's internal 6669 // state consistent by clearing focus. 6670 provider.performAction(focusedChildId, 6671 AccessibilityAction.ACTION_CLEAR_ACCESSIBILITY_FOCUS.getId(), null); 6672 invalidateRectOnScreen(oldBounds); 6673 } else { 6674 // The node was refreshed, invalidate bounds if necessary. 6675 final Rect newBounds = mAccessibilityFocusedVirtualView.getBoundsInScreen(); 6676 if (!oldBounds.equals(newBounds)) { 6677 oldBounds.union(newBounds); 6678 invalidateRectOnScreen(oldBounds); 6679 } 6680 } 6681 } 6682 6683 @Override 6684 public void notifySubtreeAccessibilityStateChanged(View child, View source, int changeType) { 6685 postSendWindowContentChangedCallback(source, changeType); 6686 } 6687 6688 @Override 6689 public boolean canResolveLayoutDirection() { 6690 return true; 6691 } 6692 6693 @Override 6694 public boolean isLayoutDirectionResolved() { 6695 return true; 6696 } 6697 6698 @Override 6699 public int getLayoutDirection() { 6700 return View.LAYOUT_DIRECTION_RESOLVED_DEFAULT; 6701 } 6702 6703 @Override 6704 public boolean canResolveTextDirection() { 6705 return true; 6706 } 6707 6708 @Override 6709 public boolean isTextDirectionResolved() { 6710 return true; 6711 } 6712 6713 @Override 6714 public int getTextDirection() { 6715 return View.TEXT_DIRECTION_RESOLVED_DEFAULT; 6716 } 6717 6718 @Override 6719 public boolean canResolveTextAlignment() { 6720 return true; 6721 } 6722 6723 @Override 6724 public boolean isTextAlignmentResolved() { 6725 return true; 6726 } 6727 6728 @Override 6729 public int getTextAlignment() { 6730 return View.TEXT_ALIGNMENT_RESOLVED_DEFAULT; 6731 } 6732 6733 private View getCommonPredecessor(View first, View second) { 6734 if (mTempHashSet == null) { 6735 mTempHashSet = new HashSet<View>(); 6736 } 6737 HashSet<View> seen = mTempHashSet; 6738 seen.clear(); 6739 View firstCurrent = first; 6740 while (firstCurrent != null) { 6741 seen.add(firstCurrent); 6742 ViewParent firstCurrentParent = firstCurrent.mParent; 6743 if (firstCurrentParent instanceof View) { 6744 firstCurrent = (View) firstCurrentParent; 6745 } else { 6746 firstCurrent = null; 6747 } 6748 } 6749 View secondCurrent = second; 6750 while (secondCurrent != null) { 6751 if (seen.contains(secondCurrent)) { 6752 seen.clear(); 6753 return secondCurrent; 6754 } 6755 ViewParent secondCurrentParent = secondCurrent.mParent; 6756 if (secondCurrentParent instanceof View) { 6757 secondCurrent = (View) secondCurrentParent; 6758 } else { 6759 secondCurrent = null; 6760 } 6761 } 6762 seen.clear(); 6763 return null; 6764 } 6765 6766 void checkThread() { 6767 if (mThread != Thread.currentThread()) { 6768 throw new CalledFromWrongThreadException( 6769 "Only the original thread that created a view hierarchy can touch its views."); 6770 } 6771 } 6772 6773 @Override 6774 public void requestDisallowInterceptTouchEvent(boolean disallowIntercept) { 6775 // ViewAncestor never intercepts touch event, so this can be a no-op 6776 } 6777 6778 @Override 6779 public boolean requestChildRectangleOnScreen(View child, Rect rectangle, boolean immediate) { 6780 if (rectangle == null) { 6781 return scrollToRectOrFocus(null, immediate); 6782 } 6783 rectangle.offset(child.getLeft() - child.getScrollX(), 6784 child.getTop() - child.getScrollY()); 6785 final boolean scrolled = scrollToRectOrFocus(rectangle, immediate); 6786 mTempRect.set(rectangle); 6787 mTempRect.offset(0, -mCurScrollY); 6788 mTempRect.offset(mAttachInfo.mWindowLeft, mAttachInfo.mWindowTop); 6789 try { 6790 mWindowSession.onRectangleOnScreenRequested(mWindow, mTempRect); 6791 } catch (RemoteException re) { 6792 /* ignore */ 6793 } 6794 return scrolled; 6795 } 6796 6797 @Override 6798 public void childHasTransientStateChanged(View child, boolean hasTransientState) { 6799 // Do nothing. 6800 } 6801 6802 @Override 6803 public boolean onStartNestedScroll(View child, View target, int nestedScrollAxes) { 6804 return false; 6805 } 6806 6807 @Override 6808 public void onStopNestedScroll(View target) { 6809 } 6810 6811 @Override 6812 public void onNestedScrollAccepted(View child, View target, int nestedScrollAxes) { 6813 } 6814 6815 @Override 6816 public void onNestedScroll(View target, int dxConsumed, int dyConsumed, 6817 int dxUnconsumed, int dyUnconsumed) { 6818 } 6819 6820 @Override 6821 public void onNestedPreScroll(View target, int dx, int dy, int[] consumed) { 6822 } 6823 6824 @Override 6825 public boolean onNestedFling(View target, float velocityX, float velocityY, boolean consumed) { 6826 return false; 6827 } 6828 6829 @Override 6830 public boolean onNestedPreFling(View target, float velocityX, float velocityY) { 6831 return false; 6832 } 6833 6834 @Override 6835 public boolean onNestedPrePerformAccessibilityAction(View target, int action, Bundle args) { 6836 return false; 6837 } 6838 6839 /** 6840 * Force the window to report its next draw. 6841 * <p> 6842 * This method is only supposed to be used to speed up the interaction from SystemUI and window 6843 * manager when waiting for the first frame to be drawn when turning on the screen. DO NOT USE 6844 * unless you fully understand this interaction. 6845 * @hide 6846 */ 6847 public void setReportNextDraw() { 6848 mReportNextDraw = true; 6849 invalidate(); 6850 } 6851 6852 void changeCanvasOpacity(boolean opaque) { 6853 Log.d(mTag, "changeCanvasOpacity: opaque=" + opaque); 6854 if (mAttachInfo.mHardwareRenderer != null) { 6855 mAttachInfo.mHardwareRenderer.setOpaque(opaque); 6856 } 6857 } 6858 6859 class TakenSurfaceHolder extends BaseSurfaceHolder { 6860 @Override 6861 public boolean onAllowLockCanvas() { 6862 return mDrawingAllowed; 6863 } 6864 6865 @Override 6866 public void onRelayoutContainer() { 6867 // Not currently interesting -- from changing between fixed and layout size. 6868 } 6869 6870 @Override 6871 public void setFormat(int format) { 6872 ((RootViewSurfaceTaker)mView).setSurfaceFormat(format); 6873 } 6874 6875 @Override 6876 public void setType(int type) { 6877 ((RootViewSurfaceTaker)mView).setSurfaceType(type); 6878 } 6879 6880 @Override 6881 public void onUpdateSurface() { 6882 // We take care of format and type changes on our own. 6883 throw new IllegalStateException("Shouldn't be here"); 6884 } 6885 6886 @Override 6887 public boolean isCreating() { 6888 return mIsCreating; 6889 } 6890 6891 @Override 6892 public void setFixedSize(int width, int height) { 6893 throw new UnsupportedOperationException( 6894 "Currently only support sizing from layout"); 6895 } 6896 6897 @Override 6898 public void setKeepScreenOn(boolean screenOn) { 6899 ((RootViewSurfaceTaker)mView).setSurfaceKeepScreenOn(screenOn); 6900 } 6901 } 6902 6903 static class W extends IWindow.Stub { 6904 private final WeakReference<ViewRootImpl> mViewAncestor; 6905 private final IWindowSession mWindowSession; 6906 6907 W(ViewRootImpl viewAncestor) { 6908 mViewAncestor = new WeakReference<ViewRootImpl>(viewAncestor); 6909 mWindowSession = viewAncestor.mWindowSession; 6910 } 6911 6912 @Override 6913 public void resized(Rect frame, Rect overscanInsets, Rect contentInsets, 6914 Rect visibleInsets, Rect stableInsets, Rect outsets, boolean reportDraw, 6915 Configuration newConfig, Rect backDropFrame, boolean forceLayout, 6916 boolean alwaysConsumeNavBar) { 6917 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6918 if (viewAncestor != null) { 6919 viewAncestor.dispatchResized(frame, overscanInsets, contentInsets, 6920 visibleInsets, stableInsets, outsets, reportDraw, newConfig, backDropFrame, 6921 forceLayout, alwaysConsumeNavBar); 6922 } 6923 } 6924 6925 @Override 6926 public void moved(int newX, int newY) { 6927 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6928 if (viewAncestor != null) { 6929 viewAncestor.dispatchMoved(newX, newY); 6930 } 6931 } 6932 6933 @Override 6934 public void dispatchAppVisibility(boolean visible) { 6935 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6936 if (viewAncestor != null) { 6937 viewAncestor.dispatchAppVisibility(visible); 6938 } 6939 } 6940 6941 @Override 6942 public void dispatchGetNewSurface() { 6943 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6944 if (viewAncestor != null) { 6945 viewAncestor.dispatchGetNewSurface(); 6946 } 6947 } 6948 6949 @Override 6950 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 6951 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6952 if (viewAncestor != null) { 6953 viewAncestor.windowFocusChanged(hasFocus, inTouchMode); 6954 } 6955 } 6956 6957 private static int checkCallingPermission(String permission) { 6958 try { 6959 return ActivityManagerNative.getDefault().checkPermission( 6960 permission, Binder.getCallingPid(), Binder.getCallingUid()); 6961 } catch (RemoteException e) { 6962 return PackageManager.PERMISSION_DENIED; 6963 } 6964 } 6965 6966 @Override 6967 public void executeCommand(String command, String parameters, ParcelFileDescriptor out) { 6968 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6969 if (viewAncestor != null) { 6970 final View view = viewAncestor.mView; 6971 if (view != null) { 6972 if (checkCallingPermission(Manifest.permission.DUMP) != 6973 PackageManager.PERMISSION_GRANTED) { 6974 throw new SecurityException("Insufficient permissions to invoke" 6975 + " executeCommand() from pid=" + Binder.getCallingPid() 6976 + ", uid=" + Binder.getCallingUid()); 6977 } 6978 6979 OutputStream clientStream = null; 6980 try { 6981 clientStream = new ParcelFileDescriptor.AutoCloseOutputStream(out); 6982 ViewDebug.dispatchCommand(view, command, parameters, clientStream); 6983 } catch (IOException e) { 6984 e.printStackTrace(); 6985 } finally { 6986 if (clientStream != null) { 6987 try { 6988 clientStream.close(); 6989 } catch (IOException e) { 6990 e.printStackTrace(); 6991 } 6992 } 6993 } 6994 } 6995 } 6996 } 6997 6998 @Override 6999 public void closeSystemDialogs(String reason) { 7000 final ViewRootImpl viewAncestor = mViewAncestor.get(); 7001 if (viewAncestor != null) { 7002 viewAncestor.dispatchCloseSystemDialogs(reason); 7003 } 7004 } 7005 7006 @Override 7007 public void dispatchWallpaperOffsets(float x, float y, float xStep, float yStep, 7008 boolean sync) { 7009 if (sync) { 7010 try { 7011 mWindowSession.wallpaperOffsetsComplete(asBinder()); 7012 } catch (RemoteException e) { 7013 } 7014 } 7015 } 7016 7017 @Override 7018 public void dispatchWallpaperCommand(String action, int x, int y, 7019 int z, Bundle extras, boolean sync) { 7020 if (sync) { 7021 try { 7022 mWindowSession.wallpaperCommandComplete(asBinder(), null); 7023 } catch (RemoteException e) { 7024 } 7025 } 7026 } 7027 7028 /* Drag/drop */ 7029 @Override 7030 public void dispatchDragEvent(DragEvent event) { 7031 final ViewRootImpl viewAncestor = mViewAncestor.get(); 7032 if (viewAncestor != null) { 7033 viewAncestor.dispatchDragEvent(event); 7034 } 7035 } 7036 7037 @Override 7038 public void updatePointerIcon(float x, float y) { 7039 final ViewRootImpl viewAncestor = mViewAncestor.get(); 7040 if (viewAncestor != null) { 7041 viewAncestor.updatePointerIcon(x, y); 7042 } 7043 } 7044 7045 @Override 7046 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 7047 int localValue, int localChanges) { 7048 final ViewRootImpl viewAncestor = mViewAncestor.get(); 7049 if (viewAncestor != null) { 7050 viewAncestor.dispatchSystemUiVisibilityChanged(seq, globalVisibility, 7051 localValue, localChanges); 7052 } 7053 } 7054 7055 @Override 7056 public void dispatchWindowShown() { 7057 final ViewRootImpl viewAncestor = mViewAncestor.get(); 7058 if (viewAncestor != null) { 7059 viewAncestor.dispatchWindowShown(); 7060 } 7061 } 7062 7063 @Override 7064 public void requestAppKeyboardShortcuts(IResultReceiver receiver, int deviceId) { 7065 ViewRootImpl viewAncestor = mViewAncestor.get(); 7066 if (viewAncestor != null) { 7067 viewAncestor.dispatchRequestKeyboardShortcuts(receiver, deviceId); 7068 } 7069 } 7070 } 7071 7072 public static final class CalledFromWrongThreadException extends AndroidRuntimeException { 7073 public CalledFromWrongThreadException(String msg) { 7074 super(msg); 7075 } 7076 } 7077 7078 static HandlerActionQueue getRunQueue() { 7079 HandlerActionQueue rq = sRunQueues.get(); 7080 if (rq != null) { 7081 return rq; 7082 } 7083 rq = new HandlerActionQueue(); 7084 sRunQueues.set(rq); 7085 return rq; 7086 } 7087 7088 /** 7089 * Start a drag resizing which will inform all listeners that a window resize is taking place. 7090 */ 7091 private void startDragResizing(Rect initialBounds, boolean fullscreen, Rect systemInsets, 7092 Rect stableInsets, int resizeMode) { 7093 if (!mDragResizing) { 7094 mDragResizing = true; 7095 synchronized (mWindowCallbacks) { 7096 for (int i = mWindowCallbacks.size() - 1; i >= 0; i--) { 7097 mWindowCallbacks.get(i).onWindowDragResizeStart(initialBounds, fullscreen, 7098 systemInsets, stableInsets, resizeMode); 7099 } 7100 } 7101 mFullRedrawNeeded = true; 7102 } 7103 } 7104 7105 /** 7106 * End a drag resize which will inform all listeners that a window resize has ended. 7107 */ 7108 private void endDragResizing() { 7109 if (mDragResizing) { 7110 mDragResizing = false; 7111 synchronized (mWindowCallbacks) { 7112 for (int i = mWindowCallbacks.size() - 1; i >= 0; i--) { 7113 mWindowCallbacks.get(i).onWindowDragResizeEnd(); 7114 } 7115 } 7116 mFullRedrawNeeded = true; 7117 } 7118 } 7119 7120 private boolean updateContentDrawBounds() { 7121 boolean updated = false; 7122 synchronized (mWindowCallbacks) { 7123 for (int i = mWindowCallbacks.size() - 1; i >= 0; i--) { 7124 updated |= mWindowCallbacks.get(i).onContentDrawn( 7125 mWindowAttributes.surfaceInsets.left, 7126 mWindowAttributes.surfaceInsets.top, 7127 mWidth, mHeight); 7128 } 7129 } 7130 return updated | (mDragResizing && mReportNextDraw); 7131 } 7132 7133 private void requestDrawWindow() { 7134 if (mReportNextDraw) { 7135 mWindowDrawCountDown = new CountDownLatch(mWindowCallbacks.size()); 7136 } 7137 synchronized (mWindowCallbacks) { 7138 for (int i = mWindowCallbacks.size() - 1; i >= 0; i--) { 7139 mWindowCallbacks.get(i).onRequestDraw(mReportNextDraw); 7140 } 7141 } 7142 } 7143 7144 /** 7145 * Tells this instance that its corresponding activity has just relaunched. In this case, we 7146 * need to force a relayout of the window to make sure we get the correct bounds from window 7147 * manager. 7148 */ 7149 public void reportActivityRelaunched() { 7150 mActivityRelaunched = true; 7151 } 7152 7153 /** 7154 * Class for managing the accessibility interaction connection 7155 * based on the global accessibility state. 7156 */ 7157 final class AccessibilityInteractionConnectionManager 7158 implements AccessibilityStateChangeListener { 7159 @Override 7160 public void onAccessibilityStateChanged(boolean enabled) { 7161 if (enabled) { 7162 ensureConnection(); 7163 if (mAttachInfo.mHasWindowFocus) { 7164 mView.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 7165 View focusedView = mView.findFocus(); 7166 if (focusedView != null && focusedView != mView) { 7167 focusedView.sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_FOCUSED); 7168 } 7169 } 7170 } else { 7171 ensureNoConnection(); 7172 mHandler.obtainMessage(MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST).sendToTarget(); 7173 } 7174 } 7175 7176 public void ensureConnection() { 7177 final boolean registered = 7178 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED_ITEM_ID; 7179 if (!registered) { 7180 mAttachInfo.mAccessibilityWindowId = 7181 mAccessibilityManager.addAccessibilityInteractionConnection(mWindow, 7182 new AccessibilityInteractionConnection(ViewRootImpl.this)); 7183 } 7184 } 7185 7186 public void ensureNoConnection() { 7187 final boolean registered = 7188 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED_ITEM_ID; 7189 if (registered) { 7190 mAttachInfo.mAccessibilityWindowId = AccessibilityNodeInfo.UNDEFINED_ITEM_ID; 7191 mAccessibilityManager.removeAccessibilityInteractionConnection(mWindow); 7192 } 7193 } 7194 } 7195 7196 final class HighContrastTextManager implements HighTextContrastChangeListener { 7197 HighContrastTextManager() { 7198 mAttachInfo.mHighContrastText = mAccessibilityManager.isHighTextContrastEnabled(); 7199 } 7200 @Override 7201 public void onHighTextContrastStateChanged(boolean enabled) { 7202 mAttachInfo.mHighContrastText = enabled; 7203 7204 // Destroy Displaylists so they can be recreated with high contrast recordings 7205 destroyHardwareResources(); 7206 7207 // Schedule redraw, which will rerecord + redraw all text 7208 invalidate(); 7209 } 7210 } 7211 7212 /** 7213 * This class is an interface this ViewAncestor provides to the 7214 * AccessibilityManagerService to the latter can interact with 7215 * the view hierarchy in this ViewAncestor. 7216 */ 7217 static final class AccessibilityInteractionConnection 7218 extends IAccessibilityInteractionConnection.Stub { 7219 private final WeakReference<ViewRootImpl> mViewRootImpl; 7220 7221 AccessibilityInteractionConnection(ViewRootImpl viewRootImpl) { 7222 mViewRootImpl = new WeakReference<ViewRootImpl>(viewRootImpl); 7223 } 7224 7225 @Override 7226 public void findAccessibilityNodeInfoByAccessibilityId(long accessibilityNodeId, 7227 Region interactiveRegion, int interactionId, 7228 IAccessibilityInteractionConnectionCallback callback, int flags, 7229 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 7230 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 7231 if (viewRootImpl != null && viewRootImpl.mView != null) { 7232 viewRootImpl.getAccessibilityInteractionController() 7233 .findAccessibilityNodeInfoByAccessibilityIdClientThread(accessibilityNodeId, 7234 interactiveRegion, interactionId, callback, flags, interrogatingPid, 7235 interrogatingTid, spec); 7236 } else { 7237 // We cannot make the call and notify the caller so it does not wait. 7238 try { 7239 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 7240 } catch (RemoteException re) { 7241 /* best effort - ignore */ 7242 } 7243 } 7244 } 7245 7246 @Override 7247 public void performAccessibilityAction(long accessibilityNodeId, int action, 7248 Bundle arguments, int interactionId, 7249 IAccessibilityInteractionConnectionCallback callback, int flags, 7250 int interrogatingPid, long interrogatingTid) { 7251 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 7252 if (viewRootImpl != null && viewRootImpl.mView != null) { 7253 viewRootImpl.getAccessibilityInteractionController() 7254 .performAccessibilityActionClientThread(accessibilityNodeId, action, arguments, 7255 interactionId, callback, flags, interrogatingPid, interrogatingTid); 7256 } else { 7257 // We cannot make the call and notify the caller so it does not wait. 7258 try { 7259 callback.setPerformAccessibilityActionResult(false, interactionId); 7260 } catch (RemoteException re) { 7261 /* best effort - ignore */ 7262 } 7263 } 7264 } 7265 7266 @Override 7267 public void findAccessibilityNodeInfosByViewId(long accessibilityNodeId, 7268 String viewId, Region interactiveRegion, int interactionId, 7269 IAccessibilityInteractionConnectionCallback callback, int flags, 7270 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 7271 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 7272 if (viewRootImpl != null && viewRootImpl.mView != null) { 7273 viewRootImpl.getAccessibilityInteractionController() 7274 .findAccessibilityNodeInfosByViewIdClientThread(accessibilityNodeId, 7275 viewId, interactiveRegion, interactionId, callback, flags, 7276 interrogatingPid, interrogatingTid, spec); 7277 } else { 7278 // We cannot make the call and notify the caller so it does not wait. 7279 try { 7280 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 7281 } catch (RemoteException re) { 7282 /* best effort - ignore */ 7283 } 7284 } 7285 } 7286 7287 @Override 7288 public void findAccessibilityNodeInfosByText(long accessibilityNodeId, String text, 7289 Region interactiveRegion, int interactionId, 7290 IAccessibilityInteractionConnectionCallback callback, int flags, 7291 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 7292 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 7293 if (viewRootImpl != null && viewRootImpl.mView != null) { 7294 viewRootImpl.getAccessibilityInteractionController() 7295 .findAccessibilityNodeInfosByTextClientThread(accessibilityNodeId, text, 7296 interactiveRegion, interactionId, callback, flags, interrogatingPid, 7297 interrogatingTid, spec); 7298 } else { 7299 // We cannot make the call and notify the caller so it does not wait. 7300 try { 7301 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 7302 } catch (RemoteException re) { 7303 /* best effort - ignore */ 7304 } 7305 } 7306 } 7307 7308 @Override 7309 public void findFocus(long accessibilityNodeId, int focusType, Region interactiveRegion, 7310 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 7311 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 7312 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 7313 if (viewRootImpl != null && viewRootImpl.mView != null) { 7314 viewRootImpl.getAccessibilityInteractionController() 7315 .findFocusClientThread(accessibilityNodeId, focusType, interactiveRegion, 7316 interactionId, callback, flags, interrogatingPid, interrogatingTid, 7317 spec); 7318 } else { 7319 // We cannot make the call and notify the caller so it does not wait. 7320 try { 7321 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 7322 } catch (RemoteException re) { 7323 /* best effort - ignore */ 7324 } 7325 } 7326 } 7327 7328 @Override 7329 public void focusSearch(long accessibilityNodeId, int direction, Region interactiveRegion, 7330 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 7331 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 7332 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 7333 if (viewRootImpl != null && viewRootImpl.mView != null) { 7334 viewRootImpl.getAccessibilityInteractionController() 7335 .focusSearchClientThread(accessibilityNodeId, direction, interactiveRegion, 7336 interactionId, callback, flags, interrogatingPid, interrogatingTid, 7337 spec); 7338 } else { 7339 // We cannot make the call and notify the caller so it does not wait. 7340 try { 7341 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 7342 } catch (RemoteException re) { 7343 /* best effort - ignore */ 7344 } 7345 } 7346 } 7347 } 7348 7349 private class SendWindowContentChangedAccessibilityEvent implements Runnable { 7350 private int mChangeTypes = 0; 7351 7352 public View mSource; 7353 public long mLastEventTimeMillis; 7354 7355 @Override 7356 public void run() { 7357 // The accessibility may be turned off while we were waiting so check again. 7358 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 7359 mLastEventTimeMillis = SystemClock.uptimeMillis(); 7360 AccessibilityEvent event = AccessibilityEvent.obtain(); 7361 event.setEventType(AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED); 7362 event.setContentChangeTypes(mChangeTypes); 7363 mSource.sendAccessibilityEventUnchecked(event); 7364 } else { 7365 mLastEventTimeMillis = 0; 7366 } 7367 // In any case reset to initial state. 7368 mSource.resetSubtreeAccessibilityStateChanged(); 7369 mSource = null; 7370 mChangeTypes = 0; 7371 } 7372 7373 public void runOrPost(View source, int changeType) { 7374 if (mSource != null) { 7375 // If there is no common predecessor, then mSource points to 7376 // a removed view, hence in this case always prefer the source. 7377 View predecessor = getCommonPredecessor(mSource, source); 7378 mSource = (predecessor != null) ? predecessor : source; 7379 mChangeTypes |= changeType; 7380 return; 7381 } 7382 mSource = source; 7383 mChangeTypes = changeType; 7384 final long timeSinceLastMillis = SystemClock.uptimeMillis() - mLastEventTimeMillis; 7385 final long minEventIntevalMillis = 7386 ViewConfiguration.getSendRecurringAccessibilityEventsInterval(); 7387 if (timeSinceLastMillis >= minEventIntevalMillis) { 7388 mSource.removeCallbacks(this); 7389 run(); 7390 } else { 7391 mSource.postDelayed(this, minEventIntevalMillis - timeSinceLastMillis); 7392 } 7393 } 7394 } 7395} 7396