ViewRootImpl.java revision d27a69c40d285c8911dac19c22926ec279110e51
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 android.Manifest; 20import android.animation.LayoutTransition; 21import android.app.ActivityManagerNative; 22import android.content.ClipDescription; 23import android.content.ComponentCallbacks; 24import android.content.ComponentCallbacks2; 25import android.content.Context; 26import android.content.pm.PackageManager; 27import android.content.res.CompatibilityInfo; 28import android.content.res.Configuration; 29import android.content.res.Resources; 30import android.graphics.Canvas; 31import android.graphics.Matrix; 32import android.graphics.Paint; 33import android.graphics.PixelFormat; 34import android.graphics.Point; 35import android.graphics.PointF; 36import android.graphics.PorterDuff; 37import android.graphics.Rect; 38import android.graphics.Region; 39import android.graphics.drawable.Drawable; 40import android.hardware.display.DisplayManager; 41import android.hardware.display.DisplayManager.DisplayListener; 42import android.media.AudioManager; 43import android.os.Binder; 44import android.os.Bundle; 45import android.os.Debug; 46import android.os.Handler; 47import android.os.Looper; 48import android.os.Message; 49import android.os.ParcelFileDescriptor; 50import android.os.PowerManager; 51import android.os.Process; 52import android.os.RemoteException; 53import android.os.SystemClock; 54import android.os.SystemProperties; 55import android.os.Trace; 56import android.util.AndroidRuntimeException; 57import android.util.DisplayMetrics; 58import android.util.Log; 59import android.util.Slog; 60import android.util.TypedValue; 61import android.view.Surface.OutOfResourcesException; 62import android.view.View.AttachInfo; 63import android.view.View.MeasureSpec; 64import android.view.accessibility.AccessibilityEvent; 65import android.view.accessibility.AccessibilityManager; 66import android.view.accessibility.AccessibilityManager.AccessibilityStateChangeListener; 67import android.view.accessibility.AccessibilityNodeInfo; 68import android.view.accessibility.AccessibilityNodeProvider; 69import android.view.accessibility.IAccessibilityInteractionConnection; 70import android.view.accessibility.IAccessibilityInteractionConnectionCallback; 71import android.view.animation.AccelerateDecelerateInterpolator; 72import android.view.animation.Interpolator; 73import android.view.inputmethod.InputConnection; 74import android.view.inputmethod.InputMethodManager; 75import android.widget.Scroller; 76 77import com.android.internal.R; 78import com.android.internal.os.SomeArgs; 79import com.android.internal.policy.PolicyManager; 80import com.android.internal.view.BaseSurfaceHolder; 81import com.android.internal.view.RootViewSurfaceTaker; 82 83import java.io.FileDescriptor; 84import java.io.IOException; 85import java.io.OutputStream; 86import java.io.PrintWriter; 87import java.lang.ref.WeakReference; 88import java.util.ArrayList; 89import java.util.HashSet; 90 91/** 92 * The top of a view hierarchy, implementing the needed protocol between View 93 * and the WindowManager. This is for the most part an internal implementation 94 * detail of {@link WindowManagerGlobal}. 95 * 96 * {@hide} 97 */ 98@SuppressWarnings({"EmptyCatchBlock", "PointlessBooleanExpression"}) 99public final class ViewRootImpl implements ViewParent, 100 View.AttachInfo.Callbacks, HardwareRenderer.HardwareDrawCallbacks { 101 private static final String TAG = "ViewRootImpl"; 102 private static final boolean DBG = false; 103 private static final boolean LOCAL_LOGV = false; 104 /** @noinspection PointlessBooleanExpression*/ 105 private static final boolean DEBUG_DRAW = false || LOCAL_LOGV; 106 private static final boolean DEBUG_LAYOUT = false || LOCAL_LOGV; 107 private static final boolean DEBUG_DIALOG = false || LOCAL_LOGV; 108 private static final boolean DEBUG_INPUT_RESIZE = false || LOCAL_LOGV; 109 private static final boolean DEBUG_ORIENTATION = false || LOCAL_LOGV; 110 private static final boolean DEBUG_TRACKBALL = false || LOCAL_LOGV; 111 private static final boolean DEBUG_IMF = false || LOCAL_LOGV; 112 private static final boolean DEBUG_CONFIGURATION = false || LOCAL_LOGV; 113 private static final boolean DEBUG_FPS = false; 114 private static final boolean DEBUG_INPUT_STAGES = false || LOCAL_LOGV; 115 116 /** 117 * Set this system property to true to force the view hierarchy to render 118 * at 60 Hz. This can be used to measure the potential framerate. 119 */ 120 private static final String PROPERTY_PROFILE_RENDERING = "viewroot.profile_rendering"; 121 private static final String PROPERTY_MEDIA_DISABLED = "config.disable_media"; 122 123 /** 124 * Maximum time we allow the user to roll the trackball enough to generate 125 * a key event, before resetting the counters. 126 */ 127 static final int MAX_TRACKBALL_DELAY = 250; 128 129 static final ThreadLocal<RunQueue> sRunQueues = new ThreadLocal<RunQueue>(); 130 131 static final ArrayList<Runnable> sFirstDrawHandlers = new ArrayList<Runnable>(); 132 static boolean sFirstDrawComplete = false; 133 134 static final ArrayList<ComponentCallbacks> sConfigCallbacks 135 = new ArrayList<ComponentCallbacks>(); 136 137 final Context mContext; 138 final IWindowSession mWindowSession; 139 final Display mDisplay; 140 final DisplayManager mDisplayManager; 141 final String mBasePackageName; 142 143 final int[] mTmpLocation = new int[2]; 144 145 final TypedValue mTmpValue = new TypedValue(); 146 147 final Thread mThread; 148 149 final WindowLeaked mLocation; 150 151 final WindowManager.LayoutParams mWindowAttributes = new WindowManager.LayoutParams(); 152 153 final W mWindow; 154 155 final int mTargetSdkVersion; 156 157 int mSeq; 158 159 View mView; 160 161 View mAccessibilityFocusedHost; 162 AccessibilityNodeInfo mAccessibilityFocusedVirtualView; 163 164 int mViewVisibility; 165 boolean mAppVisible = true; 166 int mOrigWindowType = -1; 167 168 // Set to true if the owner of this window is in the stopped state, 169 // so the window should no longer be active. 170 boolean mStopped = false; 171 172 boolean mLastInCompatMode = false; 173 174 SurfaceHolder.Callback2 mSurfaceHolderCallback; 175 BaseSurfaceHolder mSurfaceHolder; 176 boolean mIsCreating; 177 boolean mDrawingAllowed; 178 179 final Region mTransparentRegion; 180 final Region mPreviousTransparentRegion; 181 182 int mWidth; 183 int mHeight; 184 Rect mDirty; 185 final Rect mCurrentDirty = new Rect(); 186 boolean mIsAnimating; 187 188 CompatibilityInfo.Translator mTranslator; 189 190 final View.AttachInfo mAttachInfo; 191 InputChannel mInputChannel; 192 InputQueue.Callback mInputQueueCallback; 193 InputQueue mInputQueue; 194 FallbackEventHandler mFallbackEventHandler; 195 Choreographer mChoreographer; 196 197 final Rect mTempRect; // used in the transaction to not thrash the heap. 198 final Rect mVisRect; // used to retrieve visible rect of focused view. 199 200 boolean mTraversalScheduled; 201 int mTraversalBarrier; 202 boolean mWillDrawSoon; 203 /** Set to true while in performTraversals for detecting when die(true) is called from internal 204 * callbacks such as onMeasure, onPreDraw, onDraw and deferring doDie() until later. */ 205 boolean mIsInTraversal; 206 boolean mFitSystemWindowsRequested; 207 boolean mLayoutRequested; 208 boolean mFirst; 209 boolean mReportNextDraw; 210 boolean mFullRedrawNeeded; 211 boolean mNewSurfaceNeeded; 212 boolean mHasHadWindowFocus; 213 boolean mLastWasImTarget; 214 boolean mWindowsAnimating; 215 boolean mDrawDuringWindowsAnimating; 216 boolean mIsDrawing; 217 int mLastSystemUiVisibility; 218 int mClientWindowLayoutFlags; 219 boolean mLastOverscanRequested; 220 221 // Pool of queued input events. 222 private static final int MAX_QUEUED_INPUT_EVENT_POOL_SIZE = 10; 223 private QueuedInputEvent mQueuedInputEventPool; 224 private int mQueuedInputEventPoolSize; 225 226 /* Input event queue. 227 * Pending input events are input events waiting to be delivered to the input stages 228 * and handled by the application. 229 */ 230 QueuedInputEvent mPendingInputEventHead; 231 QueuedInputEvent mPendingInputEventTail; 232 int mPendingInputEventCount; 233 boolean mProcessInputEventsScheduled; 234 String mPendingInputEventQueueLengthCounterName = "pq"; 235 236 InputStage mFirstInputStage; 237 InputStage mFirstPostImeInputStage; 238 InputStage mSyntheticInputStage; 239 240 boolean mWindowAttributesChanged = false; 241 int mWindowAttributesChangesFlag = 0; 242 243 // These can be accessed by any thread, must be protected with a lock. 244 // Surface can never be reassigned or cleared (use Surface.clear()). 245 private final Surface mSurface = new Surface(); 246 247 boolean mAdded; 248 boolean mAddedTouchMode; 249 250 final DisplayAdjustments mDisplayAdjustments; 251 252 // These are accessed by multiple threads. 253 final Rect mWinFrame; // frame given by window manager. 254 255 final Rect mPendingOverscanInsets = new Rect(); 256 final Rect mPendingVisibleInsets = new Rect(); 257 final Rect mPendingContentInsets = new Rect(); 258 final ViewTreeObserver.InternalInsetsInfo mLastGivenInsets 259 = new ViewTreeObserver.InternalInsetsInfo(); 260 261 final Rect mFitSystemWindowsInsets = new Rect(); 262 263 final Configuration mLastConfiguration = new Configuration(); 264 final Configuration mPendingConfiguration = new Configuration(); 265 266 boolean mScrollMayChange; 267 int mSoftInputMode; 268 WeakReference<View> mLastScrolledFocus; 269 int mScrollY; 270 int mCurScrollY; 271 Scroller mScroller; 272 HardwareLayer mResizeBuffer; 273 long mResizeBufferStartTime; 274 int mResizeBufferDuration; 275 // Used to block the creation of the ResizeBuffer due to invalidations in 276 // the previous DisplayList tree that must prevent re-execution. 277 // Currently this means a functor was detached. 278 boolean mBlockResizeBuffer; 279 static final Interpolator mResizeInterpolator = new AccelerateDecelerateInterpolator(); 280 private ArrayList<LayoutTransition> mPendingTransitions; 281 282 final ViewConfiguration mViewConfiguration; 283 284 /* Drag/drop */ 285 ClipDescription mDragDescription; 286 View mCurrentDragView; 287 volatile Object mLocalDragState; 288 final PointF mDragPoint = new PointF(); 289 final PointF mLastTouchPoint = new PointF(); 290 291 private boolean mProfileRendering; 292 private Choreographer.FrameCallback mRenderProfiler; 293 private boolean mRenderProfilingEnabled; 294 295 private boolean mMediaDisabled; 296 297 // Variables to track frames per second, enabled via DEBUG_FPS flag 298 private long mFpsStartTime = -1; 299 private long mFpsPrevTime = -1; 300 private int mFpsNumFrames; 301 302 /** 303 * see {@link #playSoundEffect(int)} 304 */ 305 AudioManager mAudioManager; 306 307 final AccessibilityManager mAccessibilityManager; 308 309 AccessibilityInteractionController mAccessibilityInteractionController; 310 311 AccessibilityInteractionConnectionManager mAccessibilityInteractionConnectionManager; 312 313 SendWindowContentChangedAccessibilityEvent mSendWindowContentChangedAccessibilityEvent; 314 315 HashSet<View> mTempHashSet; 316 317 private final int mDensity; 318 private final int mNoncompatDensity; 319 320 private boolean mInLayout = false; 321 ArrayList<View> mLayoutRequesters = new ArrayList<View>(); 322 boolean mHandlingLayoutInLayoutRequest = false; 323 324 private int mViewLayoutDirectionInitial; 325 326 /** Set to true once doDie() has been called. */ 327 private boolean mRemoved; 328 329 /** 330 * Consistency verifier for debugging purposes. 331 */ 332 protected final InputEventConsistencyVerifier mInputEventConsistencyVerifier = 333 InputEventConsistencyVerifier.isInstrumentationEnabled() ? 334 new InputEventConsistencyVerifier(this, 0) : null; 335 336 static final class SystemUiVisibilityInfo { 337 int seq; 338 int globalVisibility; 339 int localValue; 340 int localChanges; 341 } 342 343 public ViewRootImpl(Context context, Display display) { 344 mContext = context; 345 mWindowSession = WindowManagerGlobal.getWindowSession(); 346 mDisplay = display; 347 mBasePackageName = context.getBasePackageName(); 348 349 mDisplayAdjustments = display.getDisplayAdjustments(); 350 351 mThread = Thread.currentThread(); 352 mLocation = new WindowLeaked(null); 353 mLocation.fillInStackTrace(); 354 mWidth = -1; 355 mHeight = -1; 356 mDirty = new Rect(); 357 mTempRect = new Rect(); 358 mVisRect = new Rect(); 359 mWinFrame = new Rect(); 360 mWindow = new W(this); 361 mTargetSdkVersion = context.getApplicationInfo().targetSdkVersion; 362 mViewVisibility = View.GONE; 363 mTransparentRegion = new Region(); 364 mPreviousTransparentRegion = new Region(); 365 mFirst = true; // true for the first time the view is added 366 mAdded = false; 367 mAccessibilityManager = AccessibilityManager.getInstance(context); 368 mAccessibilityInteractionConnectionManager = 369 new AccessibilityInteractionConnectionManager(); 370 mAccessibilityManager.addAccessibilityStateChangeListener( 371 mAccessibilityInteractionConnectionManager); 372 mAttachInfo = new View.AttachInfo(mWindowSession, mWindow, display, this, mHandler, this); 373 mViewConfiguration = ViewConfiguration.get(context); 374 mDensity = context.getResources().getDisplayMetrics().densityDpi; 375 mNoncompatDensity = context.getResources().getDisplayMetrics().noncompatDensityDpi; 376 mFallbackEventHandler = PolicyManager.makeNewFallbackEventHandler(context); 377 mChoreographer = Choreographer.getInstance(); 378 mDisplayManager = (DisplayManager)context.getSystemService(Context.DISPLAY_SERVICE); 379 loadSystemProperties(); 380 } 381 382 public static void addFirstDrawHandler(Runnable callback) { 383 synchronized (sFirstDrawHandlers) { 384 if (!sFirstDrawComplete) { 385 sFirstDrawHandlers.add(callback); 386 } 387 } 388 } 389 390 public static void addConfigCallback(ComponentCallbacks callback) { 391 synchronized (sConfigCallbacks) { 392 sConfigCallbacks.add(callback); 393 } 394 } 395 396 // FIXME for perf testing only 397 private boolean mProfile = false; 398 399 /** 400 * Call this to profile the next traversal call. 401 * FIXME for perf testing only. Remove eventually 402 */ 403 public void profile() { 404 mProfile = true; 405 } 406 407 /** 408 * Indicates whether we are in touch mode. Calling this method triggers an IPC 409 * call and should be avoided whenever possible. 410 * 411 * @return True, if the device is in touch mode, false otherwise. 412 * 413 * @hide 414 */ 415 static boolean isInTouchMode() { 416 IWindowSession windowSession = WindowManagerGlobal.peekWindowSession(); 417 if (windowSession != null) { 418 try { 419 return windowSession.getInTouchMode(); 420 } catch (RemoteException e) { 421 } 422 } 423 return false; 424 } 425 426 /** 427 * We have one child 428 */ 429 public void setView(View view, WindowManager.LayoutParams attrs, View panelParentView) { 430 synchronized (this) { 431 if (mView == null) { 432 mView = view; 433 434 mAttachInfo.mDisplayState = mDisplay.getState(); 435 mDisplayManager.registerDisplayListener(mDisplayListener, mHandler); 436 437 mViewLayoutDirectionInitial = mView.getRawLayoutDirection(); 438 mFallbackEventHandler.setView(view); 439 mWindowAttributes.copyFrom(attrs); 440 if (mWindowAttributes.packageName == null) { 441 mWindowAttributes.packageName = mBasePackageName; 442 } 443 attrs = mWindowAttributes; 444 // Keep track of the actual window flags supplied by the client. 445 mClientWindowLayoutFlags = attrs.flags; 446 447 setAccessibilityFocus(null, null); 448 449 if (view instanceof RootViewSurfaceTaker) { 450 mSurfaceHolderCallback = 451 ((RootViewSurfaceTaker)view).willYouTakeTheSurface(); 452 if (mSurfaceHolderCallback != null) { 453 mSurfaceHolder = new TakenSurfaceHolder(); 454 mSurfaceHolder.setFormat(PixelFormat.UNKNOWN); 455 } 456 } 457 458 CompatibilityInfo compatibilityInfo = mDisplayAdjustments.getCompatibilityInfo(); 459 mTranslator = compatibilityInfo.getTranslator(); 460 mDisplayAdjustments.setActivityToken(attrs.token); 461 462 // If the application owns the surface, don't enable hardware acceleration 463 if (mSurfaceHolder == null) { 464 enableHardwareAcceleration(attrs); 465 } 466 467 boolean restore = false; 468 if (mTranslator != null) { 469 mSurface.setCompatibilityTranslator(mTranslator); 470 restore = true; 471 attrs.backup(); 472 mTranslator.translateWindowLayout(attrs); 473 } 474 if (DEBUG_LAYOUT) Log.d(TAG, "WindowLayout in setView:" + attrs); 475 476 if (!compatibilityInfo.supportsScreen()) { 477 attrs.privateFlags |= WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 478 mLastInCompatMode = true; 479 } 480 481 mSoftInputMode = attrs.softInputMode; 482 mWindowAttributesChanged = true; 483 mWindowAttributesChangesFlag = WindowManager.LayoutParams.EVERYTHING_CHANGED; 484 mAttachInfo.mRootView = view; 485 mAttachInfo.mScalingRequired = mTranslator != null; 486 mAttachInfo.mApplicationScale = 487 mTranslator == null ? 1.0f : mTranslator.applicationScale; 488 if (panelParentView != null) { 489 mAttachInfo.mPanelParentWindowToken 490 = panelParentView.getApplicationWindowToken(); 491 } 492 mAdded = true; 493 int res; /* = WindowManagerImpl.ADD_OKAY; */ 494 495 // Schedule the first layout -before- adding to the window 496 // manager, to make sure we do the relayout before receiving 497 // any other events from the system. 498 requestLayout(); 499 if ((mWindowAttributes.inputFeatures 500 & WindowManager.LayoutParams.INPUT_FEATURE_NO_INPUT_CHANNEL) == 0) { 501 mInputChannel = new InputChannel(); 502 } 503 try { 504 mOrigWindowType = mWindowAttributes.type; 505 mAttachInfo.mRecomputeGlobalAttributes = true; 506 collectViewAttributes(); 507 res = mWindowSession.addToDisplay(mWindow, mSeq, mWindowAttributes, 508 getHostVisibility(), mDisplay.getDisplayId(), 509 mAttachInfo.mContentInsets, mInputChannel); 510 } catch (RemoteException e) { 511 mAdded = false; 512 mView = null; 513 mAttachInfo.mRootView = null; 514 mInputChannel = null; 515 mFallbackEventHandler.setView(null); 516 unscheduleTraversals(); 517 setAccessibilityFocus(null, null); 518 throw new RuntimeException("Adding window failed", e); 519 } finally { 520 if (restore) { 521 attrs.restore(); 522 } 523 } 524 525 if (mTranslator != null) { 526 mTranslator.translateRectInScreenToAppWindow(mAttachInfo.mContentInsets); 527 } 528 mPendingOverscanInsets.set(0, 0, 0, 0); 529 mPendingContentInsets.set(mAttachInfo.mContentInsets); 530 mPendingVisibleInsets.set(0, 0, 0, 0); 531 if (DEBUG_LAYOUT) Log.v(TAG, "Added window " + mWindow); 532 if (res < WindowManagerGlobal.ADD_OKAY) { 533 mAttachInfo.mRootView = null; 534 mAdded = false; 535 mFallbackEventHandler.setView(null); 536 unscheduleTraversals(); 537 setAccessibilityFocus(null, null); 538 switch (res) { 539 case WindowManagerGlobal.ADD_BAD_APP_TOKEN: 540 case WindowManagerGlobal.ADD_BAD_SUBWINDOW_TOKEN: 541 throw new WindowManager.BadTokenException( 542 "Unable to add window -- token " + attrs.token 543 + " is not valid; is your activity running?"); 544 case WindowManagerGlobal.ADD_NOT_APP_TOKEN: 545 throw new WindowManager.BadTokenException( 546 "Unable to add window -- token " + attrs.token 547 + " is not for an application"); 548 case WindowManagerGlobal.ADD_APP_EXITING: 549 throw new WindowManager.BadTokenException( 550 "Unable to add window -- app for token " + attrs.token 551 + " is exiting"); 552 case WindowManagerGlobal.ADD_DUPLICATE_ADD: 553 throw new WindowManager.BadTokenException( 554 "Unable to add window -- window " + mWindow 555 + " has already been added"); 556 case WindowManagerGlobal.ADD_STARTING_NOT_NEEDED: 557 // Silently ignore -- we would have just removed it 558 // right away, anyway. 559 return; 560 case WindowManagerGlobal.ADD_MULTIPLE_SINGLETON: 561 throw new WindowManager.BadTokenException( 562 "Unable to add window " + mWindow + 563 " -- another window of this type already exists"); 564 case WindowManagerGlobal.ADD_PERMISSION_DENIED: 565 throw new WindowManager.BadTokenException( 566 "Unable to add window " + mWindow + 567 " -- permission denied for this window type"); 568 case WindowManagerGlobal.ADD_INVALID_DISPLAY: 569 throw new WindowManager.InvalidDisplayException( 570 "Unable to add window " + mWindow + 571 " -- the specified display can not be found"); 572 } 573 throw new RuntimeException( 574 "Unable to add window -- unknown error code " + res); 575 } 576 577 if (view instanceof RootViewSurfaceTaker) { 578 mInputQueueCallback = 579 ((RootViewSurfaceTaker)view).willYouTakeTheInputQueue(); 580 } 581 if (mInputChannel != null) { 582 if (mInputQueueCallback != null) { 583 mInputQueue = new InputQueue(); 584 mInputQueueCallback.onInputQueueCreated(mInputQueue); 585 } 586 mInputEventReceiver = new WindowInputEventReceiver(mInputChannel, 587 Looper.myLooper()); 588 } 589 590 view.assignParent(this); 591 mAddedTouchMode = (res & WindowManagerGlobal.ADD_FLAG_IN_TOUCH_MODE) != 0; 592 mAppVisible = (res & WindowManagerGlobal.ADD_FLAG_APP_VISIBLE) != 0; 593 594 if (mAccessibilityManager.isEnabled()) { 595 mAccessibilityInteractionConnectionManager.ensureConnection(); 596 } 597 598 if (view.getImportantForAccessibility() == View.IMPORTANT_FOR_ACCESSIBILITY_AUTO) { 599 view.setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_YES); 600 } 601 602 // Set up the input pipeline. 603 CharSequence counterSuffix = attrs.getTitle(); 604 mSyntheticInputStage = new SyntheticInputStage(); 605 InputStage viewPostImeStage = new ViewPostImeInputStage(mSyntheticInputStage); 606 InputStage nativePostImeStage = new NativePostImeInputStage(viewPostImeStage, 607 "aq:native-post-ime:" + counterSuffix); 608 InputStage earlyPostImeStage = new EarlyPostImeInputStage(nativePostImeStage); 609 InputStage imeStage = new ImeInputStage(earlyPostImeStage, 610 "aq:ime:" + counterSuffix); 611 InputStage viewPreImeStage = new ViewPreImeInputStage(imeStage); 612 InputStage nativePreImeStage = new NativePreImeInputStage(viewPreImeStage, 613 "aq:native-pre-ime:" + counterSuffix); 614 615 mFirstInputStage = nativePreImeStage; 616 mFirstPostImeInputStage = earlyPostImeStage; 617 mPendingInputEventQueueLengthCounterName = "aq:pending:" + counterSuffix; 618 } 619 } 620 } 621 622 /** Whether the window is in local focus mode or not */ 623 private boolean isInLocalFocusMode() { 624 return (mWindowAttributes.flags & WindowManager.LayoutParams.FLAG_LOCAL_FOCUS_MODE) != 0; 625 } 626 627 void destroyHardwareResources() { 628 if (mAttachInfo.mHardwareRenderer != null) { 629 mAttachInfo.mHardwareRenderer.destroyHardwareResources(mView); 630 mAttachInfo.mHardwareRenderer.destroy(false); 631 } 632 } 633 634 void destroyHardwareLayers() { 635 if (mThread != Thread.currentThread()) { 636 if (mAttachInfo.mHardwareRenderer != null && 637 mAttachInfo.mHardwareRenderer.isEnabled()) { 638 HardwareRenderer.trimMemory(ComponentCallbacks2.TRIM_MEMORY_MODERATE); 639 } 640 } else { 641 destroyHardwareLayer(mView); 642 } 643 } 644 645 private static void destroyHardwareLayer(View view) { 646 view.destroyLayer(true); 647 648 if (view instanceof ViewGroup) { 649 ViewGroup group = (ViewGroup) view; 650 651 int count = group.getChildCount(); 652 for (int i = 0; i < count; i++) { 653 destroyHardwareLayer(group.getChildAt(i)); 654 } 655 } 656 } 657 658 void flushHardwareLayerUpdates() { 659 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled()) { 660 mAttachInfo.mHardwareRenderer.flushLayerUpdates(); 661 } 662 } 663 664 void dispatchFlushHardwareLayerUpdates() { 665 mHandler.removeMessages(MSG_FLUSH_LAYER_UPDATES); 666 mHandler.sendMessageAtFrontOfQueue(mHandler.obtainMessage(MSG_FLUSH_LAYER_UPDATES)); 667 } 668 669 public void detachFunctor(long functor) { 670 // TODO: Make the resize buffer some other way to not need this block 671 mBlockResizeBuffer = true; 672 if (mAttachInfo.mHardwareRenderer != null) { 673 // Fence so that any pending invokeFunctor() messages will be processed 674 // before we return from detachFunctor. 675 mAttachInfo.mHardwareRenderer.fence(); 676 } 677 } 678 679 public boolean invokeFunctor(long functor, boolean waitForCompletion) { 680 if (mAttachInfo.mHardwareRenderer == null || !mAttachInfo.mHardwareRenderer.isEnabled()) { 681 return false; 682 } 683 mAttachInfo.mHardwareRenderer.invokeFunctor(functor, waitForCompletion); 684 return true; 685 } 686 687 private void enableHardwareAcceleration(WindowManager.LayoutParams attrs) { 688 mAttachInfo.mHardwareAccelerated = false; 689 mAttachInfo.mHardwareAccelerationRequested = false; 690 691 // Don't enable hardware acceleration when the application is in compatibility mode 692 if (mTranslator != null) return; 693 694 // Try to enable hardware acceleration if requested 695 final boolean hardwareAccelerated = 696 (attrs.flags & WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED) != 0; 697 698 if (hardwareAccelerated) { 699 if (!HardwareRenderer.isAvailable()) { 700 return; 701 } 702 703 // Persistent processes (including the system) should not do 704 // accelerated rendering on low-end devices. In that case, 705 // sRendererDisabled will be set. In addition, the system process 706 // itself should never do accelerated rendering. In that case, both 707 // sRendererDisabled and sSystemRendererDisabled are set. When 708 // sSystemRendererDisabled is set, PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED 709 // can be used by code on the system process to escape that and enable 710 // HW accelerated drawing. (This is basically for the lock screen.) 711 712 final boolean fakeHwAccelerated = (attrs.privateFlags & 713 WindowManager.LayoutParams.PRIVATE_FLAG_FAKE_HARDWARE_ACCELERATED) != 0; 714 final boolean forceHwAccelerated = (attrs.privateFlags & 715 WindowManager.LayoutParams.PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED) != 0; 716 717 if (!HardwareRenderer.sRendererDisabled || (HardwareRenderer.sSystemRendererDisabled 718 && forceHwAccelerated)) { 719 if (!HardwareRenderer.sUseRenderThread) { 720 // TODO: Delete 721 // Don't enable hardware acceleration when we're not on the main thread 722 if (!HardwareRenderer.sSystemRendererDisabled && 723 Looper.getMainLooper() != Looper.myLooper()) { 724 Log.w(HardwareRenderer.LOG_TAG, "Attempting to initialize hardware " 725 + "acceleration outside of the main thread, aborting"); 726 return; 727 } 728 } 729 730 if (mAttachInfo.mHardwareRenderer != null) { 731 mAttachInfo.mHardwareRenderer.destroy(true); 732 } 733 734 final boolean translucent = attrs.format != PixelFormat.OPAQUE; 735 mAttachInfo.mHardwareRenderer = HardwareRenderer.create(translucent); 736 if (mAttachInfo.mHardwareRenderer != null) { 737 mAttachInfo.mHardwareRenderer.setName(attrs.getTitle().toString()); 738 mAttachInfo.mHardwareAccelerated = 739 mAttachInfo.mHardwareAccelerationRequested = true; 740 } 741 } else if (fakeHwAccelerated) { 742 // The window had wanted to use hardware acceleration, but this 743 // is not allowed in its process. By setting this flag, it can 744 // still render as if it was accelerated. This is basically for 745 // the preview windows the window manager shows for launching 746 // applications, so they will look more like the app being launched. 747 mAttachInfo.mHardwareAccelerationRequested = true; 748 } 749 } 750 } 751 752 public View getView() { 753 return mView; 754 } 755 756 final WindowLeaked getLocation() { 757 return mLocation; 758 } 759 760 void setLayoutParams(WindowManager.LayoutParams attrs, boolean newView) { 761 synchronized (this) { 762 int oldSoftInputMode = mWindowAttributes.softInputMode; 763 // Keep track of the actual window flags supplied by the client. 764 mClientWindowLayoutFlags = attrs.flags; 765 // preserve compatible window flag if exists. 766 int compatibleWindowFlag = mWindowAttributes.privateFlags 767 & WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 768 // transfer over system UI visibility values as they carry current state. 769 attrs.systemUiVisibility = mWindowAttributes.systemUiVisibility; 770 attrs.subtreeSystemUiVisibility = mWindowAttributes.subtreeSystemUiVisibility; 771 mWindowAttributesChangesFlag = mWindowAttributes.copyFrom(attrs); 772 if ((mWindowAttributesChangesFlag 773 & WindowManager.LayoutParams.TRANSLUCENT_FLAGS_CHANGED) != 0) { 774 // Recompute system ui visibility. 775 mAttachInfo.mRecomputeGlobalAttributes = true; 776 } 777 if (mWindowAttributes.packageName == null) { 778 mWindowAttributes.packageName = mBasePackageName; 779 } 780 mWindowAttributes.privateFlags |= compatibleWindowFlag; 781 782 applyKeepScreenOnFlag(mWindowAttributes); 783 784 if (newView) { 785 mSoftInputMode = attrs.softInputMode; 786 requestLayout(); 787 } 788 // Don't lose the mode we last auto-computed. 789 if ((attrs.softInputMode&WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 790 == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 791 mWindowAttributes.softInputMode = (mWindowAttributes.softInputMode 792 & ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 793 | (oldSoftInputMode 794 & WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST); 795 } 796 mWindowAttributesChanged = true; 797 scheduleTraversals(); 798 } 799 } 800 801 void handleAppVisibility(boolean visible) { 802 if (mAppVisible != visible) { 803 mAppVisible = visible; 804 scheduleTraversals(); 805 } 806 } 807 808 void handleGetNewSurface() { 809 mNewSurfaceNeeded = true; 810 mFullRedrawNeeded = true; 811 scheduleTraversals(); 812 } 813 814 private final DisplayListener mDisplayListener = new DisplayListener() { 815 @Override 816 public void onDisplayChanged(int displayId) { 817 if (mView != null && mDisplay.getDisplayId() == displayId) { 818 final int oldDisplayState = mAttachInfo.mDisplayState; 819 final int newDisplayState = mDisplay.getState(); 820 if (oldDisplayState != newDisplayState) { 821 mAttachInfo.mDisplayState = newDisplayState; 822 if (oldDisplayState != Display.STATE_UNKNOWN) { 823 final int oldScreenState = toViewScreenState(oldDisplayState); 824 final int newScreenState = toViewScreenState(newDisplayState); 825 if (oldScreenState != newScreenState) { 826 mView.dispatchScreenStateChanged(newScreenState); 827 } 828 if (oldDisplayState == Display.STATE_OFF) { 829 // Draw was suppressed so we need to for it to happen here. 830 mFullRedrawNeeded = true; 831 scheduleTraversals(); 832 } 833 } 834 } 835 } 836 } 837 838 @Override 839 public void onDisplayRemoved(int displayId) { 840 } 841 842 @Override 843 public void onDisplayAdded(int displayId) { 844 } 845 846 private int toViewScreenState(int displayState) { 847 return displayState == Display.STATE_OFF ? 848 View.SCREEN_STATE_OFF : View.SCREEN_STATE_ON; 849 } 850 }; 851 852 @Override 853 public void requestFitSystemWindows() { 854 checkThread(); 855 mFitSystemWindowsRequested = true; 856 scheduleTraversals(); 857 } 858 859 @Override 860 public void requestLayout() { 861 if (!mHandlingLayoutInLayoutRequest) { 862 checkThread(); 863 mLayoutRequested = true; 864 scheduleTraversals(); 865 } 866 } 867 868 @Override 869 public boolean isLayoutRequested() { 870 return mLayoutRequested; 871 } 872 873 void invalidate() { 874 mDirty.set(0, 0, mWidth, mHeight); 875 scheduleTraversals(); 876 } 877 878 void invalidateWorld(View view) { 879 view.invalidate(); 880 if (view instanceof ViewGroup) { 881 ViewGroup parent = (ViewGroup) view; 882 for (int i = 0; i < parent.getChildCount(); i++) { 883 invalidateWorld(parent.getChildAt(i)); 884 } 885 } 886 } 887 888 @Override 889 public void invalidateChild(View child, Rect dirty) { 890 invalidateChildInParent(null, dirty); 891 } 892 893 @Override 894 public ViewParent invalidateChildInParent(int[] location, Rect dirty) { 895 checkThread(); 896 if (DEBUG_DRAW) Log.v(TAG, "Invalidate child: " + dirty); 897 898 if (dirty == null) { 899 invalidate(); 900 return null; 901 } else if (dirty.isEmpty() && !mIsAnimating) { 902 return null; 903 } 904 905 if (mCurScrollY != 0 || mTranslator != null) { 906 mTempRect.set(dirty); 907 dirty = mTempRect; 908 if (mCurScrollY != 0) { 909 dirty.offset(0, -mCurScrollY); 910 } 911 if (mTranslator != null) { 912 mTranslator.translateRectInAppWindowToScreen(dirty); 913 } 914 if (mAttachInfo.mScalingRequired) { 915 dirty.inset(-1, -1); 916 } 917 } 918 919 final Rect localDirty = mDirty; 920 if (!localDirty.isEmpty() && !localDirty.contains(dirty)) { 921 mAttachInfo.mSetIgnoreDirtyState = true; 922 mAttachInfo.mIgnoreDirtyState = true; 923 } 924 925 // Add the new dirty rect to the current one 926 localDirty.union(dirty.left, dirty.top, dirty.right, dirty.bottom); 927 // Intersect with the bounds of the window to skip 928 // updates that lie outside of the visible region 929 final float appScale = mAttachInfo.mApplicationScale; 930 final boolean intersected = localDirty.intersect(0, 0, 931 (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 932 if (!intersected) { 933 localDirty.setEmpty(); 934 } 935 if (!mWillDrawSoon && (intersected || mIsAnimating)) { 936 scheduleTraversals(); 937 } 938 939 return null; 940 } 941 942 void setStopped(boolean stopped) { 943 if (mStopped != stopped) { 944 mStopped = stopped; 945 if (!stopped) { 946 scheduleTraversals(); 947 } 948 } 949 } 950 951 @Override 952 public ViewParent getParent() { 953 return null; 954 } 955 956 @Override 957 public boolean getChildVisibleRect(View child, Rect r, android.graphics.Point offset) { 958 if (child != mView) { 959 throw new RuntimeException("child is not mine, honest!"); 960 } 961 // Note: don't apply scroll offset, because we want to know its 962 // visibility in the virtual canvas being given to the view hierarchy. 963 return r.intersect(0, 0, mWidth, mHeight); 964 } 965 966 @Override 967 public void bringChildToFront(View child) { 968 } 969 970 int getHostVisibility() { 971 return mAppVisible ? mView.getVisibility() : View.GONE; 972 } 973 974 void disposeResizeBuffer() { 975 if (mResizeBuffer != null) { 976 mResizeBuffer.destroy(); 977 mResizeBuffer = null; 978 } 979 } 980 981 /** 982 * Add LayoutTransition to the list of transitions to be started in the next traversal. 983 * This list will be cleared after the transitions on the list are start()'ed. These 984 * transitionsa re added by LayoutTransition itself when it sets up animations. The setup 985 * happens during the layout phase of traversal, which we want to complete before any of the 986 * animations are started (because those animations may side-effect properties that layout 987 * depends upon, like the bounding rectangles of the affected views). So we add the transition 988 * to the list and it is started just prior to starting the drawing phase of traversal. 989 * 990 * @param transition The LayoutTransition to be started on the next traversal. 991 * 992 * @hide 993 */ 994 public void requestTransitionStart(LayoutTransition transition) { 995 if (mPendingTransitions == null || !mPendingTransitions.contains(transition)) { 996 if (mPendingTransitions == null) { 997 mPendingTransitions = new ArrayList<LayoutTransition>(); 998 } 999 mPendingTransitions.add(transition); 1000 } 1001 } 1002 1003 void scheduleTraversals() { 1004 if (!mTraversalScheduled) { 1005 mTraversalScheduled = true; 1006 mTraversalBarrier = mHandler.getLooper().postSyncBarrier(); 1007 mChoreographer.postCallback( 1008 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 1009 scheduleConsumeBatchedInput(); 1010 } 1011 } 1012 1013 void unscheduleTraversals() { 1014 if (mTraversalScheduled) { 1015 mTraversalScheduled = false; 1016 mHandler.getLooper().removeSyncBarrier(mTraversalBarrier); 1017 mChoreographer.removeCallbacks( 1018 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 1019 } 1020 } 1021 1022 void doTraversal() { 1023 if (mTraversalScheduled) { 1024 mTraversalScheduled = false; 1025 mHandler.getLooper().removeSyncBarrier(mTraversalBarrier); 1026 1027 if (mProfile) { 1028 Debug.startMethodTracing("ViewAncestor"); 1029 } 1030 1031 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "performTraversals"); 1032 try { 1033 performTraversals(); 1034 } finally { 1035 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 1036 } 1037 1038 if (mProfile) { 1039 Debug.stopMethodTracing(); 1040 mProfile = false; 1041 } 1042 } 1043 } 1044 1045 private void applyKeepScreenOnFlag(WindowManager.LayoutParams params) { 1046 // Update window's global keep screen on flag: if a view has requested 1047 // that the screen be kept on, then it is always set; otherwise, it is 1048 // set to whatever the client last requested for the global state. 1049 if (mAttachInfo.mKeepScreenOn) { 1050 params.flags |= WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON; 1051 } else { 1052 params.flags = (params.flags&~WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON) 1053 | (mClientWindowLayoutFlags&WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 1054 } 1055 } 1056 1057 private boolean collectViewAttributes() { 1058 final View.AttachInfo attachInfo = mAttachInfo; 1059 if (attachInfo.mRecomputeGlobalAttributes) { 1060 //Log.i(TAG, "Computing view hierarchy attributes!"); 1061 attachInfo.mRecomputeGlobalAttributes = false; 1062 boolean oldScreenOn = attachInfo.mKeepScreenOn; 1063 attachInfo.mKeepScreenOn = false; 1064 attachInfo.mSystemUiVisibility = 0; 1065 attachInfo.mHasSystemUiListeners = false; 1066 mView.dispatchCollectViewAttributes(attachInfo, 0); 1067 attachInfo.mSystemUiVisibility &= ~attachInfo.mDisabledSystemUiVisibility; 1068 WindowManager.LayoutParams params = mWindowAttributes; 1069 attachInfo.mSystemUiVisibility |= getImpliedSystemUiVisibility(params); 1070 if (attachInfo.mKeepScreenOn != oldScreenOn 1071 || attachInfo.mSystemUiVisibility != params.subtreeSystemUiVisibility 1072 || attachInfo.mHasSystemUiListeners != params.hasSystemUiListeners) { 1073 applyKeepScreenOnFlag(params); 1074 params.subtreeSystemUiVisibility = attachInfo.mSystemUiVisibility; 1075 params.hasSystemUiListeners = attachInfo.mHasSystemUiListeners; 1076 mView.dispatchWindowSystemUiVisiblityChanged(attachInfo.mSystemUiVisibility); 1077 return true; 1078 } 1079 } 1080 return false; 1081 } 1082 1083 private int getImpliedSystemUiVisibility(WindowManager.LayoutParams params) { 1084 int vis = 0; 1085 // Translucent decor window flags imply stable system ui visibility. 1086 if ((params.flags & WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS) != 0) { 1087 vis |= View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN; 1088 } 1089 if ((params.flags & WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION) != 0) { 1090 vis |= View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION; 1091 } 1092 return vis; 1093 } 1094 1095 private boolean measureHierarchy(final View host, final WindowManager.LayoutParams lp, 1096 final Resources res, final int desiredWindowWidth, final int desiredWindowHeight) { 1097 int childWidthMeasureSpec; 1098 int childHeightMeasureSpec; 1099 boolean windowSizeMayChange = false; 1100 1101 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) Log.v(TAG, 1102 "Measuring " + host + " in display " + desiredWindowWidth 1103 + "x" + desiredWindowHeight + "..."); 1104 1105 boolean goodMeasure = false; 1106 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT) { 1107 // On large screens, we don't want to allow dialogs to just 1108 // stretch to fill the entire width of the screen to display 1109 // one line of text. First try doing the layout at a smaller 1110 // size to see if it will fit. 1111 final DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1112 res.getValue(com.android.internal.R.dimen.config_prefDialogWidth, mTmpValue, true); 1113 int baseSize = 0; 1114 if (mTmpValue.type == TypedValue.TYPE_DIMENSION) { 1115 baseSize = (int)mTmpValue.getDimension(packageMetrics); 1116 } 1117 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": baseSize=" + baseSize); 1118 if (baseSize != 0 && desiredWindowWidth > baseSize) { 1119 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1120 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1121 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1122 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": measured (" 1123 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1124 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1125 goodMeasure = true; 1126 } else { 1127 // Didn't fit in that size... try expanding a bit. 1128 baseSize = (baseSize+desiredWindowWidth)/2; 1129 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": next baseSize=" 1130 + baseSize); 1131 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1132 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1133 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": measured (" 1134 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1135 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1136 if (DEBUG_DIALOG) Log.v(TAG, "Good!"); 1137 goodMeasure = true; 1138 } 1139 } 1140 } 1141 } 1142 1143 if (!goodMeasure) { 1144 childWidthMeasureSpec = getRootMeasureSpec(desiredWindowWidth, lp.width); 1145 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1146 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1147 if (mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) { 1148 windowSizeMayChange = true; 1149 } 1150 } 1151 1152 if (DBG) { 1153 System.out.println("======================================"); 1154 System.out.println("performTraversals -- after measure"); 1155 host.debug(); 1156 } 1157 1158 return windowSizeMayChange; 1159 } 1160 1161 /** 1162 * Modifies the input matrix such that it maps view-local coordinates to 1163 * on-screen coordinates. 1164 * 1165 * @param m input matrix to modify 1166 */ 1167 void transformMatrixToGlobal(Matrix m) { 1168 final View.AttachInfo attachInfo = mAttachInfo; 1169 m.postTranslate(attachInfo.mWindowLeft, attachInfo.mWindowTop); 1170 } 1171 1172 /** 1173 * Modifies the input matrix such that it maps on-screen coordinates to 1174 * view-local coordinates. 1175 * 1176 * @param m input matrix to modify 1177 */ 1178 void transformMatrixToLocal(Matrix m) { 1179 final View.AttachInfo attachInfo = mAttachInfo; 1180 m.preTranslate(-attachInfo.mWindowLeft, -attachInfo.mWindowTop); 1181 } 1182 1183 void dispatchApplyInsets(View host) { 1184 mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets); 1185 boolean isRound = false; 1186 if ((mWindowAttributes.flags & WindowManager.LayoutParams.FLAG_LAYOUT_IN_OVERSCAN) != 0 1187 && mDisplay.getDisplayId() == 0) { 1188 // we're fullscreen and not hosted in an ActivityView 1189 isRound = mContext.getResources().getBoolean( 1190 com.android.internal.R.bool.config_windowIsRound); 1191 } 1192 host.dispatchApplyWindowInsets(new WindowInsets( 1193 mFitSystemWindowsInsets, isRound)); 1194 } 1195 1196 private void performTraversals() { 1197 // cache mView since it is used so much below... 1198 final View host = mView; 1199 1200 if (DBG) { 1201 System.out.println("======================================"); 1202 System.out.println("performTraversals"); 1203 host.debug(); 1204 } 1205 1206 if (host == null || !mAdded) 1207 return; 1208 1209 mIsInTraversal = true; 1210 mWillDrawSoon = true; 1211 boolean windowSizeMayChange = false; 1212 boolean newSurface = false; 1213 boolean surfaceChanged = false; 1214 WindowManager.LayoutParams lp = mWindowAttributes; 1215 1216 int desiredWindowWidth; 1217 int desiredWindowHeight; 1218 1219 final View.AttachInfo attachInfo = mAttachInfo; 1220 1221 final int viewVisibility = getHostVisibility(); 1222 boolean viewVisibilityChanged = mViewVisibility != viewVisibility 1223 || mNewSurfaceNeeded; 1224 1225 WindowManager.LayoutParams params = null; 1226 if (mWindowAttributesChanged) { 1227 mWindowAttributesChanged = false; 1228 surfaceChanged = true; 1229 params = lp; 1230 } 1231 CompatibilityInfo compatibilityInfo = mDisplayAdjustments.getCompatibilityInfo(); 1232 if (compatibilityInfo.supportsScreen() == mLastInCompatMode) { 1233 params = lp; 1234 mFullRedrawNeeded = true; 1235 mLayoutRequested = true; 1236 if (mLastInCompatMode) { 1237 params.privateFlags &= ~WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 1238 mLastInCompatMode = false; 1239 } else { 1240 params.privateFlags |= WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 1241 mLastInCompatMode = true; 1242 } 1243 } 1244 1245 mWindowAttributesChangesFlag = 0; 1246 1247 Rect frame = mWinFrame; 1248 if (mFirst) { 1249 mFullRedrawNeeded = true; 1250 mLayoutRequested = true; 1251 1252 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL 1253 || lp.type == WindowManager.LayoutParams.TYPE_INPUT_METHOD) { 1254 // NOTE -- system code, won't try to do compat mode. 1255 Point size = new Point(); 1256 mDisplay.getRealSize(size); 1257 desiredWindowWidth = size.x; 1258 desiredWindowHeight = size.y; 1259 } else { 1260 DisplayMetrics packageMetrics = 1261 mView.getContext().getResources().getDisplayMetrics(); 1262 desiredWindowWidth = packageMetrics.widthPixels; 1263 desiredWindowHeight = packageMetrics.heightPixels; 1264 } 1265 1266 // We used to use the following condition to choose 32 bits drawing caches: 1267 // PixelFormat.hasAlpha(lp.format) || lp.format == PixelFormat.RGBX_8888 1268 // However, windows are now always 32 bits by default, so choose 32 bits 1269 attachInfo.mUse32BitDrawingCache = true; 1270 attachInfo.mHasWindowFocus = false; 1271 attachInfo.mWindowVisibility = viewVisibility; 1272 attachInfo.mRecomputeGlobalAttributes = false; 1273 viewVisibilityChanged = false; 1274 mLastConfiguration.setTo(host.getResources().getConfiguration()); 1275 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1276 // Set the layout direction if it has not been set before (inherit is the default) 1277 if (mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 1278 host.setLayoutDirection(mLastConfiguration.getLayoutDirection()); 1279 } 1280 host.dispatchAttachedToWindow(attachInfo, 0); 1281 attachInfo.mTreeObserver.dispatchOnWindowAttachedChange(true); 1282 dispatchApplyInsets(host); 1283 //Log.i(TAG, "Screen on initialized: " + attachInfo.mKeepScreenOn); 1284 1285 } else { 1286 desiredWindowWidth = frame.width(); 1287 desiredWindowHeight = frame.height(); 1288 if (desiredWindowWidth != mWidth || desiredWindowHeight != mHeight) { 1289 if (DEBUG_ORIENTATION) Log.v(TAG, 1290 "View " + host + " resized to: " + frame); 1291 mFullRedrawNeeded = true; 1292 mLayoutRequested = true; 1293 windowSizeMayChange = true; 1294 } 1295 } 1296 1297 if (viewVisibilityChanged) { 1298 attachInfo.mWindowVisibility = viewVisibility; 1299 host.dispatchWindowVisibilityChanged(viewVisibility); 1300 if (viewVisibility != View.VISIBLE || mNewSurfaceNeeded) { 1301 destroyHardwareResources(); 1302 } 1303 if (viewVisibility == View.GONE) { 1304 // After making a window gone, we will count it as being 1305 // shown for the first time the next time it gets focus. 1306 mHasHadWindowFocus = false; 1307 } 1308 } 1309 1310 // Execute enqueued actions on every traversal in case a detached view enqueued an action 1311 getRunQueue().executeActions(attachInfo.mHandler); 1312 1313 boolean insetsChanged = false; 1314 1315 boolean layoutRequested = mLayoutRequested && !mStopped; 1316 if (layoutRequested) { 1317 1318 final Resources res = mView.getContext().getResources(); 1319 1320 if (mFirst) { 1321 // make sure touch mode code executes by setting cached value 1322 // to opposite of the added touch mode. 1323 mAttachInfo.mInTouchMode = !mAddedTouchMode; 1324 ensureTouchModeLocally(mAddedTouchMode); 1325 } else { 1326 if (!mPendingOverscanInsets.equals(mAttachInfo.mOverscanInsets)) { 1327 insetsChanged = true; 1328 } 1329 if (!mPendingContentInsets.equals(mAttachInfo.mContentInsets)) { 1330 insetsChanged = true; 1331 } 1332 if (!mPendingVisibleInsets.equals(mAttachInfo.mVisibleInsets)) { 1333 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1334 if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: " 1335 + mAttachInfo.mVisibleInsets); 1336 } 1337 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT 1338 || lp.height == ViewGroup.LayoutParams.WRAP_CONTENT) { 1339 windowSizeMayChange = true; 1340 1341 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL 1342 || lp.type == WindowManager.LayoutParams.TYPE_INPUT_METHOD) { 1343 // NOTE -- system code, won't try to do compat mode. 1344 Point size = new Point(); 1345 mDisplay.getRealSize(size); 1346 desiredWindowWidth = size.x; 1347 desiredWindowHeight = size.y; 1348 } else { 1349 DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1350 desiredWindowWidth = packageMetrics.widthPixels; 1351 desiredWindowHeight = packageMetrics.heightPixels; 1352 } 1353 } 1354 } 1355 1356 // Ask host how big it wants to be 1357 windowSizeMayChange |= measureHierarchy(host, lp, res, 1358 desiredWindowWidth, desiredWindowHeight); 1359 } 1360 1361 if (collectViewAttributes()) { 1362 params = lp; 1363 } 1364 if (attachInfo.mForceReportNewAttributes) { 1365 attachInfo.mForceReportNewAttributes = false; 1366 params = lp; 1367 } 1368 1369 if (mFirst || attachInfo.mViewVisibilityChanged) { 1370 attachInfo.mViewVisibilityChanged = false; 1371 int resizeMode = mSoftInputMode & 1372 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST; 1373 // If we are in auto resize mode, then we need to determine 1374 // what mode to use now. 1375 if (resizeMode == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 1376 final int N = attachInfo.mScrollContainers.size(); 1377 for (int i=0; i<N; i++) { 1378 if (attachInfo.mScrollContainers.get(i).isShown()) { 1379 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE; 1380 } 1381 } 1382 if (resizeMode == 0) { 1383 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_PAN; 1384 } 1385 if ((lp.softInputMode & 1386 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) != resizeMode) { 1387 lp.softInputMode = (lp.softInputMode & 1388 ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) | 1389 resizeMode; 1390 params = lp; 1391 } 1392 } 1393 } 1394 1395 if (params != null) { 1396 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 1397 if (!PixelFormat.formatHasAlpha(params.format)) { 1398 params.format = PixelFormat.TRANSLUCENT; 1399 } 1400 } 1401 mAttachInfo.mOverscanRequested = (params.flags 1402 & WindowManager.LayoutParams.FLAG_LAYOUT_IN_OVERSCAN) != 0; 1403 } 1404 1405 if (mFitSystemWindowsRequested) { 1406 mFitSystemWindowsRequested = false; 1407 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1408 dispatchApplyInsets(host); 1409 if (mLayoutRequested) { 1410 // Short-circuit catching a new layout request here, so 1411 // we don't need to go through two layout passes when things 1412 // change due to fitting system windows, which can happen a lot. 1413 windowSizeMayChange |= measureHierarchy(host, lp, 1414 mView.getContext().getResources(), 1415 desiredWindowWidth, desiredWindowHeight); 1416 } 1417 } 1418 1419 if (layoutRequested) { 1420 // Clear this now, so that if anything requests a layout in the 1421 // rest of this function we will catch it and re-run a full 1422 // layout pass. 1423 mLayoutRequested = false; 1424 } 1425 1426 boolean windowShouldResize = layoutRequested && windowSizeMayChange 1427 && ((mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) 1428 || (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT && 1429 frame.width() < desiredWindowWidth && frame.width() != mWidth) 1430 || (lp.height == ViewGroup.LayoutParams.WRAP_CONTENT && 1431 frame.height() < desiredWindowHeight && frame.height() != mHeight)); 1432 1433 // Determine whether to compute insets. 1434 // If there are no inset listeners remaining then we may still need to compute 1435 // insets in case the old insets were non-empty and must be reset. 1436 final boolean computesInternalInsets = 1437 attachInfo.mTreeObserver.hasComputeInternalInsetsListeners() 1438 || attachInfo.mHasNonEmptyGivenInternalInsets; 1439 1440 boolean insetsPending = false; 1441 int relayoutResult = 0; 1442 1443 if (mFirst || windowShouldResize || insetsChanged || 1444 viewVisibilityChanged || params != null) { 1445 1446 if (viewVisibility == View.VISIBLE) { 1447 // If this window is giving internal insets to the window 1448 // manager, and it is being added or changing its visibility, 1449 // then we want to first give the window manager "fake" 1450 // insets to cause it to effectively ignore the content of 1451 // the window during layout. This avoids it briefly causing 1452 // other windows to resize/move based on the raw frame of the 1453 // window, waiting until we can finish laying out this window 1454 // and get back to the window manager with the ultimately 1455 // computed insets. 1456 insetsPending = computesInternalInsets && (mFirst || viewVisibilityChanged); 1457 } 1458 1459 if (mSurfaceHolder != null) { 1460 mSurfaceHolder.mSurfaceLock.lock(); 1461 mDrawingAllowed = true; 1462 } 1463 1464 boolean hwInitialized = false; 1465 boolean contentInsetsChanged = false; 1466 boolean hadSurface = mSurface.isValid(); 1467 1468 try { 1469 if (DEBUG_LAYOUT) { 1470 Log.i(TAG, "host=w:" + host.getMeasuredWidth() + ", h:" + 1471 host.getMeasuredHeight() + ", params=" + params); 1472 } 1473 1474 if (mAttachInfo.mHardwareRenderer != null) { 1475 // relayoutWindow may decide to destroy mSurface. As that decision 1476 // happens in WindowManager service, we need to be defensive here 1477 // and stop using the surface in case it gets destroyed. 1478 mAttachInfo.mHardwareRenderer.pauseSurface(mSurface); 1479 } 1480 final int surfaceGenerationId = mSurface.getGenerationId(); 1481 relayoutResult = relayoutWindow(params, viewVisibility, insetsPending); 1482 if (!mDrawDuringWindowsAnimating && 1483 (relayoutResult & WindowManagerGlobal.RELAYOUT_RES_ANIMATING) != 0) { 1484 mWindowsAnimating = true; 1485 } 1486 1487 if (DEBUG_LAYOUT) Log.v(TAG, "relayout: frame=" + frame.toShortString() 1488 + " overscan=" + mPendingOverscanInsets.toShortString() 1489 + " content=" + mPendingContentInsets.toShortString() 1490 + " visible=" + mPendingVisibleInsets.toShortString() 1491 + " surface=" + mSurface); 1492 1493 if (mPendingConfiguration.seq != 0) { 1494 if (DEBUG_CONFIGURATION) Log.v(TAG, "Visible with new config: " 1495 + mPendingConfiguration); 1496 updateConfiguration(mPendingConfiguration, !mFirst); 1497 mPendingConfiguration.seq = 0; 1498 } 1499 1500 final boolean overscanInsetsChanged = !mPendingOverscanInsets.equals( 1501 mAttachInfo.mOverscanInsets); 1502 contentInsetsChanged = !mPendingContentInsets.equals( 1503 mAttachInfo.mContentInsets); 1504 final boolean visibleInsetsChanged = !mPendingVisibleInsets.equals( 1505 mAttachInfo.mVisibleInsets); 1506 if (contentInsetsChanged) { 1507 if (mWidth > 0 && mHeight > 0 && lp != null && 1508 ((lp.systemUiVisibility|lp.subtreeSystemUiVisibility) 1509 & View.SYSTEM_UI_LAYOUT_FLAGS) == 0 && 1510 mSurface != null && mSurface.isValid() && 1511 !mAttachInfo.mTurnOffWindowResizeAnim && 1512 mAttachInfo.mHardwareRenderer != null && 1513 mAttachInfo.mHardwareRenderer.isEnabled() && 1514 lp != null && !PixelFormat.formatHasAlpha(lp.format) 1515 && !mBlockResizeBuffer) { 1516 1517 disposeResizeBuffer(); 1518 1519 if (mResizeBuffer == null) { 1520 mResizeBuffer = mAttachInfo.mHardwareRenderer.createDisplayListLayer( 1521 mWidth, mHeight); 1522 } 1523 mResizeBuffer.prepare(mWidth, mHeight, false); 1524 RenderNode layerRenderNode = mResizeBuffer.startRecording(); 1525 HardwareCanvas layerCanvas = layerRenderNode.start(mWidth, mHeight); 1526 try { 1527 final int restoreCount = layerCanvas.save(); 1528 1529 int yoff; 1530 final boolean scrolling = mScroller != null 1531 && mScroller.computeScrollOffset(); 1532 if (scrolling) { 1533 yoff = mScroller.getCurrY(); 1534 mScroller.abortAnimation(); 1535 } else { 1536 yoff = mScrollY; 1537 } 1538 1539 layerCanvas.translate(0, -yoff); 1540 if (mTranslator != null) { 1541 mTranslator.translateCanvas(layerCanvas); 1542 } 1543 1544 RenderNode renderNode = mView.mRenderNode; 1545 if (renderNode != null && renderNode.isValid()) { 1546 layerCanvas.drawDisplayList(renderNode, null, 1547 RenderNode.FLAG_CLIP_CHILDREN); 1548 } else { 1549 mView.draw(layerCanvas); 1550 } 1551 1552 drawAccessibilityFocusedDrawableIfNeeded(layerCanvas); 1553 1554 mResizeBufferStartTime = SystemClock.uptimeMillis(); 1555 mResizeBufferDuration = mView.getResources().getInteger( 1556 com.android.internal.R.integer.config_mediumAnimTime); 1557 1558 layerCanvas.restoreToCount(restoreCount); 1559 layerRenderNode.end(layerCanvas); 1560 layerRenderNode.setCaching(true); 1561 layerRenderNode.setLeftTopRightBottom(0, 0, mWidth, mHeight); 1562 mTempRect.set(0, 0, mWidth, mHeight); 1563 } finally { 1564 mResizeBuffer.endRecording(mTempRect); 1565 } 1566 mAttachInfo.mHardwareRenderer.flushLayerUpdates(); 1567 } 1568 mAttachInfo.mContentInsets.set(mPendingContentInsets); 1569 if (DEBUG_LAYOUT) Log.v(TAG, "Content insets changing to: " 1570 + mAttachInfo.mContentInsets); 1571 } 1572 if (overscanInsetsChanged) { 1573 mAttachInfo.mOverscanInsets.set(mPendingOverscanInsets); 1574 if (DEBUG_LAYOUT) Log.v(TAG, "Overscan insets changing to: " 1575 + mAttachInfo.mOverscanInsets); 1576 // Need to relayout with content insets. 1577 contentInsetsChanged = true; 1578 } 1579 if (contentInsetsChanged || mLastSystemUiVisibility != 1580 mAttachInfo.mSystemUiVisibility || mFitSystemWindowsRequested 1581 || mLastOverscanRequested != mAttachInfo.mOverscanRequested) { 1582 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1583 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1584 mFitSystemWindowsRequested = false; 1585 dispatchApplyInsets(host); 1586 } 1587 if (visibleInsetsChanged) { 1588 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1589 if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: " 1590 + mAttachInfo.mVisibleInsets); 1591 } 1592 1593 if (!hadSurface) { 1594 if (mSurface.isValid()) { 1595 // If we are creating a new surface, then we need to 1596 // completely redraw it. Also, when we get to the 1597 // point of drawing it we will hold off and schedule 1598 // a new traversal instead. This is so we can tell the 1599 // window manager about all of the windows being displayed 1600 // before actually drawing them, so it can display then 1601 // all at once. 1602 newSurface = true; 1603 mFullRedrawNeeded = true; 1604 mPreviousTransparentRegion.setEmpty(); 1605 1606 if (mAttachInfo.mHardwareRenderer != null) { 1607 try { 1608 hwInitialized = mAttachInfo.mHardwareRenderer.initialize( 1609 mSurface); 1610 } catch (OutOfResourcesException e) { 1611 handleOutOfResourcesException(e); 1612 return; 1613 } 1614 } 1615 } 1616 } else if (!mSurface.isValid()) { 1617 // If the surface has been removed, then reset the scroll 1618 // positions. 1619 if (mLastScrolledFocus != null) { 1620 mLastScrolledFocus.clear(); 1621 } 1622 mScrollY = mCurScrollY = 0; 1623 if (mScroller != null) { 1624 mScroller.abortAnimation(); 1625 } 1626 disposeResizeBuffer(); 1627 // Our surface is gone 1628 if (mAttachInfo.mHardwareRenderer != null && 1629 mAttachInfo.mHardwareRenderer.isEnabled()) { 1630 mAttachInfo.mHardwareRenderer.destroy(true); 1631 } 1632 } else if (surfaceGenerationId != mSurface.getGenerationId() && 1633 mSurfaceHolder == null && mAttachInfo.mHardwareRenderer != null) { 1634 mFullRedrawNeeded = true; 1635 try { 1636 mAttachInfo.mHardwareRenderer.updateSurface(mSurface); 1637 } catch (OutOfResourcesException e) { 1638 handleOutOfResourcesException(e); 1639 return; 1640 } 1641 } 1642 } catch (RemoteException e) { 1643 } 1644 1645 if (DEBUG_ORIENTATION) Log.v( 1646 TAG, "Relayout returned: frame=" + frame + ", surface=" + mSurface); 1647 1648 attachInfo.mWindowLeft = frame.left; 1649 attachInfo.mWindowTop = frame.top; 1650 1651 // !!FIXME!! This next section handles the case where we did not get the 1652 // window size we asked for. We should avoid this by getting a maximum size from 1653 // the window session beforehand. 1654 if (mWidth != frame.width() || mHeight != frame.height()) { 1655 mWidth = frame.width(); 1656 mHeight = frame.height(); 1657 } 1658 1659 if (mSurfaceHolder != null) { 1660 // The app owns the surface; tell it about what is going on. 1661 if (mSurface.isValid()) { 1662 // XXX .copyFrom() doesn't work! 1663 //mSurfaceHolder.mSurface.copyFrom(mSurface); 1664 mSurfaceHolder.mSurface = mSurface; 1665 } 1666 mSurfaceHolder.setSurfaceFrameSize(mWidth, mHeight); 1667 mSurfaceHolder.mSurfaceLock.unlock(); 1668 if (mSurface.isValid()) { 1669 if (!hadSurface) { 1670 mSurfaceHolder.ungetCallbacks(); 1671 1672 mIsCreating = true; 1673 mSurfaceHolderCallback.surfaceCreated(mSurfaceHolder); 1674 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1675 if (callbacks != null) { 1676 for (SurfaceHolder.Callback c : callbacks) { 1677 c.surfaceCreated(mSurfaceHolder); 1678 } 1679 } 1680 surfaceChanged = true; 1681 } 1682 if (surfaceChanged) { 1683 mSurfaceHolderCallback.surfaceChanged(mSurfaceHolder, 1684 lp.format, mWidth, mHeight); 1685 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1686 if (callbacks != null) { 1687 for (SurfaceHolder.Callback c : callbacks) { 1688 c.surfaceChanged(mSurfaceHolder, lp.format, 1689 mWidth, mHeight); 1690 } 1691 } 1692 } 1693 mIsCreating = false; 1694 } else if (hadSurface) { 1695 mSurfaceHolder.ungetCallbacks(); 1696 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1697 mSurfaceHolderCallback.surfaceDestroyed(mSurfaceHolder); 1698 if (callbacks != null) { 1699 for (SurfaceHolder.Callback c : callbacks) { 1700 c.surfaceDestroyed(mSurfaceHolder); 1701 } 1702 } 1703 mSurfaceHolder.mSurfaceLock.lock(); 1704 try { 1705 mSurfaceHolder.mSurface = new Surface(); 1706 } finally { 1707 mSurfaceHolder.mSurfaceLock.unlock(); 1708 } 1709 } 1710 } 1711 1712 if (mAttachInfo.mHardwareRenderer != null && 1713 mAttachInfo.mHardwareRenderer.isEnabled()) { 1714 if (hwInitialized || 1715 mWidth != mAttachInfo.mHardwareRenderer.getWidth() || 1716 mHeight != mAttachInfo.mHardwareRenderer.getHeight()) { 1717 mAttachInfo.mHardwareRenderer.setup(mWidth, mHeight); 1718 if (!hwInitialized) { 1719 mAttachInfo.mHardwareRenderer.invalidate(mSurface); 1720 mFullRedrawNeeded = true; 1721 } 1722 } 1723 } 1724 1725 if (!mStopped) { 1726 boolean focusChangedDueToTouchMode = ensureTouchModeLocally( 1727 (relayoutResult&WindowManagerGlobal.RELAYOUT_RES_IN_TOUCH_MODE) != 0); 1728 if (focusChangedDueToTouchMode || mWidth != host.getMeasuredWidth() 1729 || mHeight != host.getMeasuredHeight() || contentInsetsChanged) { 1730 int childWidthMeasureSpec = getRootMeasureSpec(mWidth, lp.width); 1731 int childHeightMeasureSpec = getRootMeasureSpec(mHeight, lp.height); 1732 1733 if (DEBUG_LAYOUT) Log.v(TAG, "Ooops, something changed! mWidth=" 1734 + mWidth + " measuredWidth=" + host.getMeasuredWidth() 1735 + " mHeight=" + mHeight 1736 + " measuredHeight=" + host.getMeasuredHeight() 1737 + " coveredInsetsChanged=" + contentInsetsChanged); 1738 1739 // Ask host how big it wants to be 1740 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1741 1742 // Implementation of weights from WindowManager.LayoutParams 1743 // We just grow the dimensions as needed and re-measure if 1744 // needs be 1745 int width = host.getMeasuredWidth(); 1746 int height = host.getMeasuredHeight(); 1747 boolean measureAgain = false; 1748 1749 if (lp.horizontalWeight > 0.0f) { 1750 width += (int) ((mWidth - width) * lp.horizontalWeight); 1751 childWidthMeasureSpec = MeasureSpec.makeMeasureSpec(width, 1752 MeasureSpec.EXACTLY); 1753 measureAgain = true; 1754 } 1755 if (lp.verticalWeight > 0.0f) { 1756 height += (int) ((mHeight - height) * lp.verticalWeight); 1757 childHeightMeasureSpec = MeasureSpec.makeMeasureSpec(height, 1758 MeasureSpec.EXACTLY); 1759 measureAgain = true; 1760 } 1761 1762 if (measureAgain) { 1763 if (DEBUG_LAYOUT) Log.v(TAG, 1764 "And hey let's measure once more: width=" + width 1765 + " height=" + height); 1766 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1767 } 1768 1769 layoutRequested = true; 1770 } 1771 } 1772 } else { 1773 // Not the first pass and no window/insets/visibility change but the window 1774 // may have moved and we need check that and if so to update the left and right 1775 // in the attach info. We translate only the window frame since on window move 1776 // the window manager tells us only for the new frame but the insets are the 1777 // same and we do not want to translate them more than once. 1778 1779 // TODO: Well, we are checking whether the frame has changed similarly 1780 // to how this is done for the insets. This is however incorrect since 1781 // the insets and the frame are translated. For example, the old frame 1782 // was (1, 1 - 1, 1) and was translated to say (2, 2 - 2, 2), now the new 1783 // reported frame is (2, 2 - 2, 2) which implies no change but this is not 1784 // true since we are comparing a not translated value to a translated one. 1785 // This scenario is rare but we may want to fix that. 1786 1787 final boolean windowMoved = (attachInfo.mWindowLeft != frame.left 1788 || attachInfo.mWindowTop != frame.top); 1789 if (windowMoved) { 1790 if (mTranslator != null) { 1791 mTranslator.translateRectInScreenToAppWinFrame(frame); 1792 } 1793 attachInfo.mWindowLeft = frame.left; 1794 attachInfo.mWindowTop = frame.top; 1795 } 1796 } 1797 1798 final boolean didLayout = layoutRequested && !mStopped; 1799 boolean triggerGlobalLayoutListener = didLayout 1800 || attachInfo.mRecomputeGlobalAttributes; 1801 if (didLayout) { 1802 performLayout(lp, desiredWindowWidth, desiredWindowHeight); 1803 1804 // By this point all views have been sized and positioned 1805 // We can compute the transparent area 1806 1807 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 1808 // start out transparent 1809 // TODO: AVOID THAT CALL BY CACHING THE RESULT? 1810 host.getLocationInWindow(mTmpLocation); 1811 mTransparentRegion.set(mTmpLocation[0], mTmpLocation[1], 1812 mTmpLocation[0] + host.mRight - host.mLeft, 1813 mTmpLocation[1] + host.mBottom - host.mTop); 1814 1815 host.gatherTransparentRegion(mTransparentRegion); 1816 if (mTranslator != null) { 1817 mTranslator.translateRegionInWindowToScreen(mTransparentRegion); 1818 } 1819 1820 if (!mTransparentRegion.equals(mPreviousTransparentRegion)) { 1821 mPreviousTransparentRegion.set(mTransparentRegion); 1822 mFullRedrawNeeded = true; 1823 // reconfigure window manager 1824 try { 1825 mWindowSession.setTransparentRegion(mWindow, mTransparentRegion); 1826 } catch (RemoteException e) { 1827 } 1828 } 1829 } 1830 1831 if (DBG) { 1832 System.out.println("======================================"); 1833 System.out.println("performTraversals -- after setFrame"); 1834 host.debug(); 1835 } 1836 } 1837 1838 if (triggerGlobalLayoutListener) { 1839 attachInfo.mRecomputeGlobalAttributes = false; 1840 attachInfo.mTreeObserver.dispatchOnGlobalLayout(); 1841 } 1842 1843 if (computesInternalInsets) { 1844 // Clear the original insets. 1845 final ViewTreeObserver.InternalInsetsInfo insets = attachInfo.mGivenInternalInsets; 1846 insets.reset(); 1847 1848 // Compute new insets in place. 1849 attachInfo.mTreeObserver.dispatchOnComputeInternalInsets(insets); 1850 attachInfo.mHasNonEmptyGivenInternalInsets = !insets.isEmpty(); 1851 1852 // Tell the window manager. 1853 if (insetsPending || !mLastGivenInsets.equals(insets)) { 1854 mLastGivenInsets.set(insets); 1855 1856 // Translate insets to screen coordinates if needed. 1857 final Rect contentInsets; 1858 final Rect visibleInsets; 1859 final Region touchableRegion; 1860 if (mTranslator != null) { 1861 contentInsets = mTranslator.getTranslatedContentInsets(insets.contentInsets); 1862 visibleInsets = mTranslator.getTranslatedVisibleInsets(insets.visibleInsets); 1863 touchableRegion = mTranslator.getTranslatedTouchableArea(insets.touchableRegion); 1864 } else { 1865 contentInsets = insets.contentInsets; 1866 visibleInsets = insets.visibleInsets; 1867 touchableRegion = insets.touchableRegion; 1868 } 1869 1870 try { 1871 mWindowSession.setInsets(mWindow, insets.mTouchableInsets, 1872 contentInsets, visibleInsets, touchableRegion); 1873 } catch (RemoteException e) { 1874 } 1875 } 1876 } 1877 1878 boolean skipDraw = false; 1879 1880 if (mFirst) { 1881 // handle first focus request 1882 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: mView.hasFocus()=" 1883 + mView.hasFocus()); 1884 if (mView != null) { 1885 if (!mView.hasFocus()) { 1886 mView.requestFocus(View.FOCUS_FORWARD); 1887 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: requested focused view=" 1888 + mView.findFocus()); 1889 } else { 1890 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: existing focused view=" 1891 + mView.findFocus()); 1892 } 1893 } 1894 if ((relayoutResult & WindowManagerGlobal.RELAYOUT_RES_ANIMATING) != 0) { 1895 // The first time we relayout the window, if the system is 1896 // doing window animations, we want to hold of on any future 1897 // draws until the animation is done. 1898 mWindowsAnimating = true; 1899 } 1900 } else if (mWindowsAnimating) { 1901 skipDraw = true; 1902 } 1903 1904 mFirst = false; 1905 mWillDrawSoon = false; 1906 mNewSurfaceNeeded = false; 1907 mViewVisibility = viewVisibility; 1908 1909 if (mAttachInfo.mHasWindowFocus && !isInLocalFocusMode()) { 1910 final boolean imTarget = WindowManager.LayoutParams 1911 .mayUseInputMethod(mWindowAttributes.flags); 1912 if (imTarget != mLastWasImTarget) { 1913 mLastWasImTarget = imTarget; 1914 InputMethodManager imm = InputMethodManager.peekInstance(); 1915 if (imm != null && imTarget) { 1916 imm.startGettingWindowFocus(mView); 1917 imm.onWindowFocus(mView, mView.findFocus(), 1918 mWindowAttributes.softInputMode, 1919 !mHasHadWindowFocus, mWindowAttributes.flags); 1920 } 1921 } 1922 } 1923 1924 // Remember if we must report the next draw. 1925 if ((relayoutResult & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 1926 mReportNextDraw = true; 1927 } 1928 1929 boolean cancelDraw = attachInfo.mTreeObserver.dispatchOnPreDraw() || 1930 viewVisibility != View.VISIBLE; 1931 1932 if (!cancelDraw && !newSurface) { 1933 if (!skipDraw || mReportNextDraw) { 1934 if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 1935 for (int i = 0; i < mPendingTransitions.size(); ++i) { 1936 mPendingTransitions.get(i).startChangingAnimations(); 1937 } 1938 mPendingTransitions.clear(); 1939 } 1940 1941 performDraw(); 1942 } 1943 } else { 1944 if (viewVisibility == View.VISIBLE) { 1945 // Try again 1946 scheduleTraversals(); 1947 } else if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 1948 for (int i = 0; i < mPendingTransitions.size(); ++i) { 1949 mPendingTransitions.get(i).endChangingAnimations(); 1950 } 1951 mPendingTransitions.clear(); 1952 } 1953 } 1954 1955 mIsInTraversal = false; 1956 } 1957 1958 private void handleOutOfResourcesException(Surface.OutOfResourcesException e) { 1959 Log.e(TAG, "OutOfResourcesException initializing HW surface", e); 1960 try { 1961 if (!mWindowSession.outOfMemory(mWindow) && 1962 Process.myUid() != Process.SYSTEM_UID) { 1963 Slog.w(TAG, "No processes killed for memory; killing self"); 1964 Process.killProcess(Process.myPid()); 1965 } 1966 } catch (RemoteException ex) { 1967 } 1968 mLayoutRequested = true; // ask wm for a new surface next time. 1969 } 1970 1971 private void performMeasure(int childWidthMeasureSpec, int childHeightMeasureSpec) { 1972 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "measure"); 1973 try { 1974 mView.measure(childWidthMeasureSpec, childHeightMeasureSpec); 1975 } finally { 1976 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 1977 } 1978 } 1979 1980 /** 1981 * Called by {@link android.view.View#isInLayout()} to determine whether the view hierarchy 1982 * is currently undergoing a layout pass. 1983 * 1984 * @return whether the view hierarchy is currently undergoing a layout pass 1985 */ 1986 boolean isInLayout() { 1987 return mInLayout; 1988 } 1989 1990 /** 1991 * Called by {@link android.view.View#requestLayout()} if the view hierarchy is currently 1992 * undergoing a layout pass. requestLayout() should not generally be called during layout, 1993 * unless the container hierarchy knows what it is doing (i.e., it is fine as long as 1994 * all children in that container hierarchy are measured and laid out at the end of the layout 1995 * pass for that container). If requestLayout() is called anyway, we handle it correctly 1996 * by registering all requesters during a frame as it proceeds. At the end of the frame, 1997 * we check all of those views to see if any still have pending layout requests, which 1998 * indicates that they were not correctly handled by their container hierarchy. If that is 1999 * the case, we clear all such flags in the tree, to remove the buggy flag state that leads 2000 * to blank containers, and force a second request/measure/layout pass in this frame. If 2001 * more requestLayout() calls are received during that second layout pass, we post those 2002 * requests to the next frame to avoid possible infinite loops. 2003 * 2004 * <p>The return value from this method indicates whether the request should proceed 2005 * (if it is a request during the first layout pass) or should be skipped and posted to the 2006 * next frame (if it is a request during the second layout pass).</p> 2007 * 2008 * @param view the view that requested the layout. 2009 * 2010 * @return true if request should proceed, false otherwise. 2011 */ 2012 boolean requestLayoutDuringLayout(final View view) { 2013 if (view.mParent == null || view.mAttachInfo == null) { 2014 // Would not normally trigger another layout, so just let it pass through as usual 2015 return true; 2016 } 2017 if (!mLayoutRequesters.contains(view)) { 2018 mLayoutRequesters.add(view); 2019 } 2020 if (!mHandlingLayoutInLayoutRequest) { 2021 // Let the request proceed normally; it will be processed in a second layout pass 2022 // if necessary 2023 return true; 2024 } else { 2025 // Don't let the request proceed during the second layout pass. 2026 // It will post to the next frame instead. 2027 return false; 2028 } 2029 } 2030 2031 private void performLayout(WindowManager.LayoutParams lp, int desiredWindowWidth, 2032 int desiredWindowHeight) { 2033 mLayoutRequested = false; 2034 mScrollMayChange = true; 2035 mInLayout = true; 2036 2037 final View host = mView; 2038 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) { 2039 Log.v(TAG, "Laying out " + host + " to (" + 2040 host.getMeasuredWidth() + ", " + host.getMeasuredHeight() + ")"); 2041 } 2042 2043 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "layout"); 2044 try { 2045 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 2046 2047 mInLayout = false; 2048 int numViewsRequestingLayout = mLayoutRequesters.size(); 2049 if (numViewsRequestingLayout > 0) { 2050 // requestLayout() was called during layout. 2051 // If no layout-request flags are set on the requesting views, there is no problem. 2052 // If some requests are still pending, then we need to clear those flags and do 2053 // a full request/measure/layout pass to handle this situation. 2054 ArrayList<View> validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, 2055 false); 2056 if (validLayoutRequesters != null) { 2057 // Set this flag to indicate that any further requests are happening during 2058 // the second pass, which may result in posting those requests to the next 2059 // frame instead 2060 mHandlingLayoutInLayoutRequest = true; 2061 2062 // Process fresh layout requests, then measure and layout 2063 int numValidRequests = validLayoutRequesters.size(); 2064 for (int i = 0; i < numValidRequests; ++i) { 2065 final View view = validLayoutRequesters.get(i); 2066 Log.w("View", "requestLayout() improperly called by " + view + 2067 " during layout: running second layout pass"); 2068 view.requestLayout(); 2069 } 2070 measureHierarchy(host, lp, mView.getContext().getResources(), 2071 desiredWindowWidth, desiredWindowHeight); 2072 mInLayout = true; 2073 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 2074 2075 mHandlingLayoutInLayoutRequest = false; 2076 2077 // Check the valid requests again, this time without checking/clearing the 2078 // layout flags, since requests happening during the second pass get noop'd 2079 validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, true); 2080 if (validLayoutRequesters != null) { 2081 final ArrayList<View> finalRequesters = validLayoutRequesters; 2082 // Post second-pass requests to the next frame 2083 getRunQueue().post(new Runnable() { 2084 @Override 2085 public void run() { 2086 int numValidRequests = finalRequesters.size(); 2087 for (int i = 0; i < numValidRequests; ++i) { 2088 final View view = finalRequesters.get(i); 2089 Log.w("View", "requestLayout() improperly called by " + view + 2090 " during second layout pass: posting in next frame"); 2091 view.requestLayout(); 2092 } 2093 } 2094 }); 2095 } 2096 } 2097 2098 } 2099 } finally { 2100 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2101 } 2102 mInLayout = false; 2103 } 2104 2105 /** 2106 * This method is called during layout when there have been calls to requestLayout() during 2107 * layout. It walks through the list of views that requested layout to determine which ones 2108 * still need it, based on visibility in the hierarchy and whether they have already been 2109 * handled (as is usually the case with ListView children). 2110 * 2111 * @param layoutRequesters The list of views that requested layout during layout 2112 * @param secondLayoutRequests Whether the requests were issued during the second layout pass. 2113 * If so, the FORCE_LAYOUT flag was not set on requesters. 2114 * @return A list of the actual views that still need to be laid out. 2115 */ 2116 private ArrayList<View> getValidLayoutRequesters(ArrayList<View> layoutRequesters, 2117 boolean secondLayoutRequests) { 2118 2119 int numViewsRequestingLayout = layoutRequesters.size(); 2120 ArrayList<View> validLayoutRequesters = null; 2121 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2122 View view = layoutRequesters.get(i); 2123 if (view != null && view.mAttachInfo != null && view.mParent != null && 2124 (secondLayoutRequests || (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) == 2125 View.PFLAG_FORCE_LAYOUT)) { 2126 boolean gone = false; 2127 View parent = view; 2128 // Only trigger new requests for views in a non-GONE hierarchy 2129 while (parent != null) { 2130 if ((parent.mViewFlags & View.VISIBILITY_MASK) == View.GONE) { 2131 gone = true; 2132 break; 2133 } 2134 if (parent.mParent instanceof View) { 2135 parent = (View) parent.mParent; 2136 } else { 2137 parent = null; 2138 } 2139 } 2140 if (!gone) { 2141 if (validLayoutRequesters == null) { 2142 validLayoutRequesters = new ArrayList<View>(); 2143 } 2144 validLayoutRequesters.add(view); 2145 } 2146 } 2147 } 2148 if (!secondLayoutRequests) { 2149 // If we're checking the layout flags, then we need to clean them up also 2150 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2151 View view = layoutRequesters.get(i); 2152 while (view != null && 2153 (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) != 0) { 2154 view.mPrivateFlags &= ~View.PFLAG_FORCE_LAYOUT; 2155 if (view.mParent instanceof View) { 2156 view = (View) view.mParent; 2157 } else { 2158 view = null; 2159 } 2160 } 2161 } 2162 } 2163 layoutRequesters.clear(); 2164 return validLayoutRequesters; 2165 } 2166 2167 @Override 2168 public void requestTransparentRegion(View child) { 2169 // the test below should not fail unless someone is messing with us 2170 checkThread(); 2171 if (mView == child) { 2172 mView.mPrivateFlags |= View.PFLAG_REQUEST_TRANSPARENT_REGIONS; 2173 // Need to make sure we re-evaluate the window attributes next 2174 // time around, to ensure the window has the correct format. 2175 mWindowAttributesChanged = true; 2176 mWindowAttributesChangesFlag = 0; 2177 requestLayout(); 2178 } 2179 } 2180 2181 /** 2182 * Figures out the measure spec for the root view in a window based on it's 2183 * layout params. 2184 * 2185 * @param windowSize 2186 * The available width or height of the window 2187 * 2188 * @param rootDimension 2189 * The layout params for one dimension (width or height) of the 2190 * window. 2191 * 2192 * @return The measure spec to use to measure the root view. 2193 */ 2194 private static int getRootMeasureSpec(int windowSize, int rootDimension) { 2195 int measureSpec; 2196 switch (rootDimension) { 2197 2198 case ViewGroup.LayoutParams.MATCH_PARENT: 2199 // Window can't resize. Force root view to be windowSize. 2200 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.EXACTLY); 2201 break; 2202 case ViewGroup.LayoutParams.WRAP_CONTENT: 2203 // Window can resize. Set max size for root view. 2204 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.AT_MOST); 2205 break; 2206 default: 2207 // Window wants to be an exact size. Force root view to be that size. 2208 measureSpec = MeasureSpec.makeMeasureSpec(rootDimension, MeasureSpec.EXACTLY); 2209 break; 2210 } 2211 return measureSpec; 2212 } 2213 2214 int mHardwareYOffset; 2215 int mResizeAlpha; 2216 final Paint mResizePaint = new Paint(); 2217 2218 @Override 2219 public void onHardwarePreDraw(HardwareCanvas canvas) { 2220 canvas.translate(0, -mHardwareYOffset); 2221 } 2222 2223 @Override 2224 public void onHardwarePostDraw(HardwareCanvas canvas) { 2225 if (mResizeBuffer != null) { 2226 mResizePaint.setAlpha(mResizeAlpha); 2227 canvas.drawHardwareLayer(mResizeBuffer, 0.0f, mHardwareYOffset, mResizePaint); 2228 } 2229 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2230 } 2231 2232 /** 2233 * @hide 2234 */ 2235 void outputDisplayList(View view) { 2236 RenderNode renderNode = view.getDisplayList(); 2237 if (renderNode != null) { 2238 renderNode.output(); 2239 } 2240 } 2241 2242 /** 2243 * @see #PROPERTY_PROFILE_RENDERING 2244 */ 2245 private void profileRendering(boolean enabled) { 2246 if (mProfileRendering) { 2247 mRenderProfilingEnabled = enabled; 2248 2249 if (mRenderProfiler != null) { 2250 mChoreographer.removeFrameCallback(mRenderProfiler); 2251 } 2252 if (mRenderProfilingEnabled) { 2253 if (mRenderProfiler == null) { 2254 mRenderProfiler = new Choreographer.FrameCallback() { 2255 @Override 2256 public void doFrame(long frameTimeNanos) { 2257 mDirty.set(0, 0, mWidth, mHeight); 2258 scheduleTraversals(); 2259 if (mRenderProfilingEnabled) { 2260 mChoreographer.postFrameCallback(mRenderProfiler); 2261 } 2262 } 2263 }; 2264 } 2265 mChoreographer.postFrameCallback(mRenderProfiler); 2266 } else { 2267 mRenderProfiler = null; 2268 } 2269 } 2270 } 2271 2272 /** 2273 * Called from draw() when DEBUG_FPS is enabled 2274 */ 2275 private void trackFPS() { 2276 // Tracks frames per second drawn. First value in a series of draws may be bogus 2277 // because it down not account for the intervening idle time 2278 long nowTime = System.currentTimeMillis(); 2279 if (mFpsStartTime < 0) { 2280 mFpsStartTime = mFpsPrevTime = nowTime; 2281 mFpsNumFrames = 0; 2282 } else { 2283 ++mFpsNumFrames; 2284 String thisHash = Integer.toHexString(System.identityHashCode(this)); 2285 long frameTime = nowTime - mFpsPrevTime; 2286 long totalTime = nowTime - mFpsStartTime; 2287 Log.v(TAG, "0x" + thisHash + "\tFrame time:\t" + frameTime); 2288 mFpsPrevTime = nowTime; 2289 if (totalTime > 1000) { 2290 float fps = (float) mFpsNumFrames * 1000 / totalTime; 2291 Log.v(TAG, "0x" + thisHash + "\tFPS:\t" + fps); 2292 mFpsStartTime = nowTime; 2293 mFpsNumFrames = 0; 2294 } 2295 } 2296 } 2297 2298 private void performDraw() { 2299 if (mAttachInfo.mDisplayState == Display.STATE_OFF && !mReportNextDraw) { 2300 return; 2301 } 2302 2303 final boolean fullRedrawNeeded = mFullRedrawNeeded; 2304 mFullRedrawNeeded = false; 2305 2306 mIsDrawing = true; 2307 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "draw"); 2308 try { 2309 draw(fullRedrawNeeded); 2310 } finally { 2311 mIsDrawing = false; 2312 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2313 } 2314 2315 if (mReportNextDraw) { 2316 mReportNextDraw = false; 2317 if (mAttachInfo.mHardwareRenderer != null) { 2318 mAttachInfo.mHardwareRenderer.fence(); 2319 } 2320 2321 if (LOCAL_LOGV) { 2322 Log.v(TAG, "FINISHED DRAWING: " + mWindowAttributes.getTitle()); 2323 } 2324 if (mSurfaceHolder != null && mSurface.isValid()) { 2325 mSurfaceHolderCallback.surfaceRedrawNeeded(mSurfaceHolder); 2326 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 2327 if (callbacks != null) { 2328 for (SurfaceHolder.Callback c : callbacks) { 2329 if (c instanceof SurfaceHolder.Callback2) { 2330 ((SurfaceHolder.Callback2)c).surfaceRedrawNeeded( 2331 mSurfaceHolder); 2332 } 2333 } 2334 } 2335 } 2336 try { 2337 mWindowSession.finishDrawing(mWindow); 2338 } catch (RemoteException e) { 2339 } 2340 } 2341 } 2342 2343 private void draw(boolean fullRedrawNeeded) { 2344 Surface surface = mSurface; 2345 if (!surface.isValid()) { 2346 return; 2347 } 2348 2349 if (DEBUG_FPS) { 2350 trackFPS(); 2351 } 2352 2353 if (!sFirstDrawComplete) { 2354 synchronized (sFirstDrawHandlers) { 2355 sFirstDrawComplete = true; 2356 final int count = sFirstDrawHandlers.size(); 2357 for (int i = 0; i< count; i++) { 2358 mHandler.post(sFirstDrawHandlers.get(i)); 2359 } 2360 } 2361 } 2362 2363 scrollToRectOrFocus(null, false); 2364 2365 final AttachInfo attachInfo = mAttachInfo; 2366 if (attachInfo.mViewScrollChanged) { 2367 attachInfo.mViewScrollChanged = false; 2368 attachInfo.mTreeObserver.dispatchOnScrollChanged(); 2369 } 2370 2371 int yoff; 2372 boolean animating = mScroller != null && mScroller.computeScrollOffset(); 2373 if (animating) { 2374 yoff = mScroller.getCurrY(); 2375 } else { 2376 yoff = mScrollY; 2377 } 2378 if (mCurScrollY != yoff) { 2379 mCurScrollY = yoff; 2380 fullRedrawNeeded = true; 2381 } 2382 2383 final float appScale = attachInfo.mApplicationScale; 2384 final boolean scalingRequired = attachInfo.mScalingRequired; 2385 2386 int resizeAlpha = 0; 2387 if (mResizeBuffer != null) { 2388 long deltaTime = SystemClock.uptimeMillis() - mResizeBufferStartTime; 2389 if (deltaTime < mResizeBufferDuration) { 2390 float amt = deltaTime/(float) mResizeBufferDuration; 2391 amt = mResizeInterpolator.getInterpolation(amt); 2392 animating = true; 2393 resizeAlpha = 255 - (int)(amt*255); 2394 } else { 2395 disposeResizeBuffer(); 2396 } 2397 } 2398 2399 final Rect dirty = mDirty; 2400 if (mSurfaceHolder != null) { 2401 // The app owns the surface, we won't draw. 2402 dirty.setEmpty(); 2403 if (animating) { 2404 if (mScroller != null) { 2405 mScroller.abortAnimation(); 2406 } 2407 disposeResizeBuffer(); 2408 } 2409 return; 2410 } 2411 2412 if (fullRedrawNeeded) { 2413 attachInfo.mIgnoreDirtyState = true; 2414 dirty.set(0, 0, (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 2415 } 2416 2417 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2418 Log.v(TAG, "Draw " + mView + "/" 2419 + mWindowAttributes.getTitle() 2420 + ": dirty={" + dirty.left + "," + dirty.top 2421 + "," + dirty.right + "," + dirty.bottom + "} surface=" 2422 + surface + " surface.isValid()=" + surface.isValid() + ", appScale:" + 2423 appScale + ", width=" + mWidth + ", height=" + mHeight); 2424 } 2425 2426 attachInfo.mTreeObserver.dispatchOnDraw(); 2427 2428 if (!dirty.isEmpty() || mIsAnimating) { 2429 if (attachInfo.mHardwareRenderer != null && attachInfo.mHardwareRenderer.isEnabled()) { 2430 // Draw with hardware renderer. 2431 mIsAnimating = false; 2432 mHardwareYOffset = yoff; 2433 mResizeAlpha = resizeAlpha; 2434 2435 mCurrentDirty.set(dirty); 2436 dirty.setEmpty(); 2437 2438 mBlockResizeBuffer = false; 2439 attachInfo.mHardwareRenderer.draw(mView, attachInfo, this, 2440 animating ? null : mCurrentDirty); 2441 } else { 2442 // If we get here with a disabled & requested hardware renderer, something went 2443 // wrong (an invalidate posted right before we destroyed the hardware surface 2444 // for instance) so we should just bail out. Locking the surface with software 2445 // rendering at this point would lock it forever and prevent hardware renderer 2446 // from doing its job when it comes back. 2447 // Before we request a new frame we must however attempt to reinitiliaze the 2448 // hardware renderer if it's in requested state. This would happen after an 2449 // eglTerminate() for instance. 2450 if (attachInfo.mHardwareRenderer != null && 2451 !attachInfo.mHardwareRenderer.isEnabled() && 2452 attachInfo.mHardwareRenderer.isRequested()) { 2453 2454 try { 2455 attachInfo.mHardwareRenderer.initializeIfNeeded(mWidth, mHeight, 2456 mSurface); 2457 } catch (OutOfResourcesException e) { 2458 handleOutOfResourcesException(e); 2459 return; 2460 } 2461 2462 mFullRedrawNeeded = true; 2463 scheduleTraversals(); 2464 return; 2465 } 2466 2467 if (!drawSoftware(surface, attachInfo, yoff, scalingRequired, dirty)) { 2468 return; 2469 } 2470 } 2471 } 2472 2473 if (animating) { 2474 mFullRedrawNeeded = true; 2475 scheduleTraversals(); 2476 } 2477 } 2478 2479 /** 2480 * @return true if drawing was succesfull, false if an error occurred 2481 */ 2482 private boolean drawSoftware(Surface surface, AttachInfo attachInfo, int yoff, 2483 boolean scalingRequired, Rect dirty) { 2484 2485 // Draw with software renderer. 2486 Canvas canvas; 2487 try { 2488 int left = dirty.left; 2489 int top = dirty.top; 2490 int right = dirty.right; 2491 int bottom = dirty.bottom; 2492 2493 canvas = mSurface.lockCanvas(dirty); 2494 2495 // The dirty rectangle can be modified by Surface.lockCanvas() 2496 //noinspection ConstantConditions 2497 if (left != dirty.left || top != dirty.top || right != dirty.right || 2498 bottom != dirty.bottom) { 2499 attachInfo.mIgnoreDirtyState = true; 2500 } 2501 2502 // TODO: Do this in native 2503 canvas.setDensity(mDensity); 2504 } catch (Surface.OutOfResourcesException e) { 2505 handleOutOfResourcesException(e); 2506 return false; 2507 } catch (IllegalArgumentException e) { 2508 Log.e(TAG, "Could not lock surface", e); 2509 // Don't assume this is due to out of memory, it could be 2510 // something else, and if it is something else then we could 2511 // kill stuff (or ourself) for no reason. 2512 mLayoutRequested = true; // ask wm for a new surface next time. 2513 return false; 2514 } 2515 2516 try { 2517 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2518 Log.v(TAG, "Surface " + surface + " drawing to bitmap w=" 2519 + canvas.getWidth() + ", h=" + canvas.getHeight()); 2520 //canvas.drawARGB(255, 255, 0, 0); 2521 } 2522 2523 // If this bitmap's format includes an alpha channel, we 2524 // need to clear it before drawing so that the child will 2525 // properly re-composite its drawing on a transparent 2526 // background. This automatically respects the clip/dirty region 2527 // or 2528 // If we are applying an offset, we need to clear the area 2529 // where the offset doesn't appear to avoid having garbage 2530 // left in the blank areas. 2531 if (!canvas.isOpaque() || yoff != 0) { 2532 canvas.drawColor(0, PorterDuff.Mode.CLEAR); 2533 } 2534 2535 dirty.setEmpty(); 2536 mIsAnimating = false; 2537 attachInfo.mDrawingTime = SystemClock.uptimeMillis(); 2538 mView.mPrivateFlags |= View.PFLAG_DRAWN; 2539 2540 if (DEBUG_DRAW) { 2541 Context cxt = mView.getContext(); 2542 Log.i(TAG, "Drawing: package:" + cxt.getPackageName() + 2543 ", metrics=" + cxt.getResources().getDisplayMetrics() + 2544 ", compatibilityInfo=" + cxt.getResources().getCompatibilityInfo()); 2545 } 2546 try { 2547 canvas.translate(0, -yoff); 2548 if (mTranslator != null) { 2549 mTranslator.translateCanvas(canvas); 2550 } 2551 canvas.setScreenDensity(scalingRequired ? mNoncompatDensity : 0); 2552 attachInfo.mSetIgnoreDirtyState = false; 2553 2554 mView.draw(canvas); 2555 2556 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2557 } finally { 2558 if (!attachInfo.mSetIgnoreDirtyState) { 2559 // Only clear the flag if it was not set during the mView.draw() call 2560 attachInfo.mIgnoreDirtyState = false; 2561 } 2562 } 2563 } finally { 2564 try { 2565 surface.unlockCanvasAndPost(canvas); 2566 } catch (IllegalArgumentException e) { 2567 Log.e(TAG, "Could not unlock surface", e); 2568 mLayoutRequested = true; // ask wm for a new surface next time. 2569 //noinspection ReturnInsideFinallyBlock 2570 return false; 2571 } 2572 2573 if (LOCAL_LOGV) { 2574 Log.v(TAG, "Surface " + surface + " unlockCanvasAndPost"); 2575 } 2576 } 2577 return true; 2578 } 2579 2580 /** 2581 * We want to draw a highlight around the current accessibility focused. 2582 * Since adding a style for all possible view is not a viable option we 2583 * have this specialized drawing method. 2584 * 2585 * Note: We are doing this here to be able to draw the highlight for 2586 * virtual views in addition to real ones. 2587 * 2588 * @param canvas The canvas on which to draw. 2589 */ 2590 private void drawAccessibilityFocusedDrawableIfNeeded(Canvas canvas) { 2591 final AccessibilityManager manager = AccessibilityManager.getInstance(mView.mContext); 2592 if (!manager.isEnabled() || !manager.isTouchExplorationEnabled()) { 2593 return; 2594 } 2595 2596 final View host = mAccessibilityFocusedHost; 2597 if (host == null || host.mAttachInfo == null) { 2598 return; 2599 } 2600 2601 final Drawable drawable = getAccessibilityFocusedDrawable(); 2602 if (drawable == null) { 2603 return; 2604 } 2605 2606 final AccessibilityNodeProvider provider = host.getAccessibilityNodeProvider(); 2607 final Rect bounds = mView.mAttachInfo.mTmpInvalRect; 2608 if (provider == null) { 2609 host.getBoundsOnScreen(bounds); 2610 } else if (mAccessibilityFocusedVirtualView != null) { 2611 mAccessibilityFocusedVirtualView.getBoundsInScreen(bounds); 2612 } else { 2613 return; 2614 } 2615 2616 bounds.offset(-mAttachInfo.mWindowLeft, -mAttachInfo.mWindowTop); 2617 bounds.intersect(0, 0, mAttachInfo.mViewRootImpl.mWidth, mAttachInfo.mViewRootImpl.mHeight); 2618 drawable.setBounds(bounds); 2619 drawable.draw(canvas); 2620 } 2621 2622 private Drawable getAccessibilityFocusedDrawable() { 2623 if (mAttachInfo != null) { 2624 // Lazily load the accessibility focus drawable. 2625 if (mAttachInfo.mAccessibilityFocusDrawable == null) { 2626 TypedValue value = new TypedValue(); 2627 final boolean resolved = mView.mContext.getTheme().resolveAttribute( 2628 R.attr.accessibilityFocusedDrawable, value, true); 2629 if (resolved) { 2630 mAttachInfo.mAccessibilityFocusDrawable = 2631 mView.mContext.getDrawable(value.resourceId); 2632 } 2633 } 2634 return mAttachInfo.mAccessibilityFocusDrawable; 2635 } 2636 return null; 2637 } 2638 2639 /** 2640 * @hide 2641 */ 2642 public void setDrawDuringWindowsAnimating(boolean value) { 2643 mDrawDuringWindowsAnimating = value; 2644 if (value) { 2645 handleDispatchDoneAnimating(); 2646 } 2647 } 2648 2649 boolean scrollToRectOrFocus(Rect rectangle, boolean immediate) { 2650 final View.AttachInfo attachInfo = mAttachInfo; 2651 final Rect ci = attachInfo.mContentInsets; 2652 final Rect vi = attachInfo.mVisibleInsets; 2653 int scrollY = 0; 2654 boolean handled = false; 2655 2656 if (vi.left > ci.left || vi.top > ci.top 2657 || vi.right > ci.right || vi.bottom > ci.bottom) { 2658 // We'll assume that we aren't going to change the scroll 2659 // offset, since we want to avoid that unless it is actually 2660 // going to make the focus visible... otherwise we scroll 2661 // all over the place. 2662 scrollY = mScrollY; 2663 // We can be called for two different situations: during a draw, 2664 // to update the scroll position if the focus has changed (in which 2665 // case 'rectangle' is null), or in response to a 2666 // requestChildRectangleOnScreen() call (in which case 'rectangle' 2667 // is non-null and we just want to scroll to whatever that 2668 // rectangle is). 2669 final View focus = mView.findFocus(); 2670 if (focus == null) { 2671 return false; 2672 } 2673 View lastScrolledFocus = (mLastScrolledFocus != null) ? mLastScrolledFocus.get() : null; 2674 if (focus != lastScrolledFocus) { 2675 // If the focus has changed, then ignore any requests to scroll 2676 // to a rectangle; first we want to make sure the entire focus 2677 // view is visible. 2678 rectangle = null; 2679 } 2680 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Eval scroll: focus=" + focus 2681 + " rectangle=" + rectangle + " ci=" + ci 2682 + " vi=" + vi); 2683 if (focus == lastScrolledFocus && !mScrollMayChange && rectangle == null) { 2684 // Optimization: if the focus hasn't changed since last 2685 // time, and no layout has happened, then just leave things 2686 // as they are. 2687 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Keeping scroll y=" 2688 + mScrollY + " vi=" + vi.toShortString()); 2689 } else { 2690 // We need to determine if the currently focused view is 2691 // within the visible part of the window and, if not, apply 2692 // a pan so it can be seen. 2693 mLastScrolledFocus = new WeakReference<View>(focus); 2694 mScrollMayChange = false; 2695 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Need to scroll?"); 2696 // Try to find the rectangle from the focus view. 2697 if (focus.getGlobalVisibleRect(mVisRect, null)) { 2698 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Root w=" 2699 + mView.getWidth() + " h=" + mView.getHeight() 2700 + " ci=" + ci.toShortString() 2701 + " vi=" + vi.toShortString()); 2702 if (rectangle == null) { 2703 focus.getFocusedRect(mTempRect); 2704 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Focus " + focus 2705 + ": focusRect=" + mTempRect.toShortString()); 2706 if (mView instanceof ViewGroup) { 2707 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 2708 focus, mTempRect); 2709 } 2710 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2711 "Focus in window: focusRect=" 2712 + mTempRect.toShortString() 2713 + " visRect=" + mVisRect.toShortString()); 2714 } else { 2715 mTempRect.set(rectangle); 2716 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2717 "Request scroll to rect: " 2718 + mTempRect.toShortString() 2719 + " visRect=" + mVisRect.toShortString()); 2720 } 2721 if (mTempRect.intersect(mVisRect)) { 2722 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2723 "Focus window visible rect: " 2724 + mTempRect.toShortString()); 2725 if (mTempRect.height() > 2726 (mView.getHeight()-vi.top-vi.bottom)) { 2727 // If the focus simply is not going to fit, then 2728 // best is probably just to leave things as-is. 2729 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2730 "Too tall; leaving scrollY=" + scrollY); 2731 } else if ((mTempRect.top-scrollY) < vi.top) { 2732 scrollY -= vi.top - (mTempRect.top-scrollY); 2733 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2734 "Top covered; scrollY=" + scrollY); 2735 } else if ((mTempRect.bottom-scrollY) 2736 > (mView.getHeight()-vi.bottom)) { 2737 scrollY += (mTempRect.bottom-scrollY) 2738 - (mView.getHeight()-vi.bottom); 2739 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2740 "Bottom covered; scrollY=" + scrollY); 2741 } 2742 handled = true; 2743 } 2744 } 2745 } 2746 } 2747 2748 if (scrollY != mScrollY) { 2749 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Pan scroll changed: old=" 2750 + mScrollY + " , new=" + scrollY); 2751 if (!immediate && mResizeBuffer == null) { 2752 if (mScroller == null) { 2753 mScroller = new Scroller(mView.getContext()); 2754 } 2755 mScroller.startScroll(0, mScrollY, 0, scrollY-mScrollY); 2756 } else if (mScroller != null) { 2757 mScroller.abortAnimation(); 2758 } 2759 mScrollY = scrollY; 2760 } 2761 2762 return handled; 2763 } 2764 2765 /** 2766 * @hide 2767 */ 2768 public View getAccessibilityFocusedHost() { 2769 return mAccessibilityFocusedHost; 2770 } 2771 2772 /** 2773 * @hide 2774 */ 2775 public AccessibilityNodeInfo getAccessibilityFocusedVirtualView() { 2776 return mAccessibilityFocusedVirtualView; 2777 } 2778 2779 void setAccessibilityFocus(View view, AccessibilityNodeInfo node) { 2780 // If we have a virtual view with accessibility focus we need 2781 // to clear the focus and invalidate the virtual view bounds. 2782 if (mAccessibilityFocusedVirtualView != null) { 2783 2784 AccessibilityNodeInfo focusNode = mAccessibilityFocusedVirtualView; 2785 View focusHost = mAccessibilityFocusedHost; 2786 2787 // Wipe the state of the current accessibility focus since 2788 // the call into the provider to clear accessibility focus 2789 // will fire an accessibility event which will end up calling 2790 // this method and we want to have clean state when this 2791 // invocation happens. 2792 mAccessibilityFocusedHost = null; 2793 mAccessibilityFocusedVirtualView = null; 2794 2795 // Clear accessibility focus on the host after clearing state since 2796 // this method may be reentrant. 2797 focusHost.clearAccessibilityFocusNoCallbacks(); 2798 2799 AccessibilityNodeProvider provider = focusHost.getAccessibilityNodeProvider(); 2800 if (provider != null) { 2801 // Invalidate the area of the cleared accessibility focus. 2802 focusNode.getBoundsInParent(mTempRect); 2803 focusHost.invalidate(mTempRect); 2804 // Clear accessibility focus in the virtual node. 2805 final int virtualNodeId = AccessibilityNodeInfo.getVirtualDescendantId( 2806 focusNode.getSourceNodeId()); 2807 provider.performAction(virtualNodeId, 2808 AccessibilityNodeInfo.ACTION_CLEAR_ACCESSIBILITY_FOCUS, null); 2809 } 2810 focusNode.recycle(); 2811 } 2812 if (mAccessibilityFocusedHost != null) { 2813 // Clear accessibility focus in the view. 2814 mAccessibilityFocusedHost.clearAccessibilityFocusNoCallbacks(); 2815 } 2816 2817 // Set the new focus host and node. 2818 mAccessibilityFocusedHost = view; 2819 mAccessibilityFocusedVirtualView = node; 2820 } 2821 2822 @Override 2823 public void requestChildFocus(View child, View focused) { 2824 if (DEBUG_INPUT_RESIZE) { 2825 Log.v(TAG, "Request child focus: focus now " + focused); 2826 } 2827 checkThread(); 2828 scheduleTraversals(); 2829 } 2830 2831 @Override 2832 public void clearChildFocus(View child) { 2833 if (DEBUG_INPUT_RESIZE) { 2834 Log.v(TAG, "Clearing child focus"); 2835 } 2836 checkThread(); 2837 scheduleTraversals(); 2838 } 2839 2840 @Override 2841 public ViewParent getParentForAccessibility() { 2842 return null; 2843 } 2844 2845 @Override 2846 public void focusableViewAvailable(View v) { 2847 checkThread(); 2848 if (mView != null) { 2849 if (!mView.hasFocus()) { 2850 v.requestFocus(); 2851 } else { 2852 // the one case where will transfer focus away from the current one 2853 // is if the current view is a view group that prefers to give focus 2854 // to its children first AND the view is a descendant of it. 2855 View focused = mView.findFocus(); 2856 if (focused instanceof ViewGroup) { 2857 ViewGroup group = (ViewGroup) focused; 2858 if (group.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 2859 && isViewDescendantOf(v, focused)) { 2860 v.requestFocus(); 2861 } 2862 } 2863 } 2864 } 2865 } 2866 2867 @Override 2868 public void recomputeViewAttributes(View child) { 2869 checkThread(); 2870 if (mView == child) { 2871 mAttachInfo.mRecomputeGlobalAttributes = true; 2872 if (!mWillDrawSoon) { 2873 scheduleTraversals(); 2874 } 2875 } 2876 } 2877 2878 void dispatchDetachedFromWindow() { 2879 if (mView != null && mView.mAttachInfo != null) { 2880 mAttachInfo.mTreeObserver.dispatchOnWindowAttachedChange(false); 2881 mView.dispatchDetachedFromWindow(); 2882 } 2883 2884 mAccessibilityInteractionConnectionManager.ensureNoConnection(); 2885 mAccessibilityManager.removeAccessibilityStateChangeListener( 2886 mAccessibilityInteractionConnectionManager); 2887 removeSendWindowContentChangedCallback(); 2888 2889 destroyHardwareRenderer(); 2890 2891 setAccessibilityFocus(null, null); 2892 2893 mView.assignParent(null); 2894 mView = null; 2895 mAttachInfo.mRootView = null; 2896 2897 mSurface.release(); 2898 2899 if (mInputQueueCallback != null && mInputQueue != null) { 2900 mInputQueueCallback.onInputQueueDestroyed(mInputQueue); 2901 mInputQueue.dispose(); 2902 mInputQueueCallback = null; 2903 mInputQueue = null; 2904 } 2905 if (mInputEventReceiver != null) { 2906 mInputEventReceiver.dispose(); 2907 mInputEventReceiver = null; 2908 } 2909 try { 2910 mWindowSession.remove(mWindow); 2911 } catch (RemoteException e) { 2912 } 2913 2914 // Dispose the input channel after removing the window so the Window Manager 2915 // doesn't interpret the input channel being closed as an abnormal termination. 2916 if (mInputChannel != null) { 2917 mInputChannel.dispose(); 2918 mInputChannel = null; 2919 } 2920 2921 mDisplayManager.unregisterDisplayListener(mDisplayListener); 2922 2923 unscheduleTraversals(); 2924 } 2925 2926 void updateConfiguration(Configuration config, boolean force) { 2927 if (DEBUG_CONFIGURATION) Log.v(TAG, 2928 "Applying new config to window " 2929 + mWindowAttributes.getTitle() 2930 + ": " + config); 2931 2932 CompatibilityInfo ci = mDisplayAdjustments.getCompatibilityInfo(); 2933 if (!ci.equals(CompatibilityInfo.DEFAULT_COMPATIBILITY_INFO)) { 2934 config = new Configuration(config); 2935 ci.applyToConfiguration(mNoncompatDensity, config); 2936 } 2937 2938 synchronized (sConfigCallbacks) { 2939 for (int i=sConfigCallbacks.size()-1; i>=0; i--) { 2940 sConfigCallbacks.get(i).onConfigurationChanged(config); 2941 } 2942 } 2943 if (mView != null) { 2944 // At this point the resources have been updated to 2945 // have the most recent config, whatever that is. Use 2946 // the one in them which may be newer. 2947 config = mView.getResources().getConfiguration(); 2948 if (force || mLastConfiguration.diff(config) != 0) { 2949 final int lastLayoutDirection = mLastConfiguration.getLayoutDirection(); 2950 final int currentLayoutDirection = config.getLayoutDirection(); 2951 mLastConfiguration.setTo(config); 2952 if (lastLayoutDirection != currentLayoutDirection && 2953 mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 2954 mView.setLayoutDirection(currentLayoutDirection); 2955 } 2956 mView.dispatchConfigurationChanged(config); 2957 } 2958 } 2959 } 2960 2961 /** 2962 * Return true if child is an ancestor of parent, (or equal to the parent). 2963 */ 2964 public static boolean isViewDescendantOf(View child, View parent) { 2965 if (child == parent) { 2966 return true; 2967 } 2968 2969 final ViewParent theParent = child.getParent(); 2970 return (theParent instanceof ViewGroup) && isViewDescendantOf((View) theParent, parent); 2971 } 2972 2973 private static void forceLayout(View view) { 2974 view.forceLayout(); 2975 if (view instanceof ViewGroup) { 2976 ViewGroup group = (ViewGroup) view; 2977 final int count = group.getChildCount(); 2978 for (int i = 0; i < count; i++) { 2979 forceLayout(group.getChildAt(i)); 2980 } 2981 } 2982 } 2983 2984 private final static int MSG_INVALIDATE = 1; 2985 private final static int MSG_INVALIDATE_RECT = 2; 2986 private final static int MSG_DIE = 3; 2987 private final static int MSG_RESIZED = 4; 2988 private final static int MSG_RESIZED_REPORT = 5; 2989 private final static int MSG_WINDOW_FOCUS_CHANGED = 6; 2990 private final static int MSG_DISPATCH_INPUT_EVENT = 7; 2991 private final static int MSG_DISPATCH_APP_VISIBILITY = 8; 2992 private final static int MSG_DISPATCH_GET_NEW_SURFACE = 9; 2993 private final static int MSG_DISPATCH_KEY_FROM_IME = 11; 2994 private final static int MSG_FINISH_INPUT_CONNECTION = 12; 2995 private final static int MSG_CHECK_FOCUS = 13; 2996 private final static int MSG_CLOSE_SYSTEM_DIALOGS = 14; 2997 private final static int MSG_DISPATCH_DRAG_EVENT = 15; 2998 private final static int MSG_DISPATCH_DRAG_LOCATION_EVENT = 16; 2999 private final static int MSG_DISPATCH_SYSTEM_UI_VISIBILITY = 17; 3000 private final static int MSG_UPDATE_CONFIGURATION = 18; 3001 private final static int MSG_PROCESS_INPUT_EVENTS = 19; 3002 private final static int MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST = 21; 3003 private final static int MSG_DISPATCH_DONE_ANIMATING = 22; 3004 private final static int MSG_INVALIDATE_WORLD = 23; 3005 private final static int MSG_WINDOW_MOVED = 24; 3006 private final static int MSG_FLUSH_LAYER_UPDATES = 25; 3007 private final static int MSG_SYNTHESIZE_INPUT_EVENT = 26; 3008 3009 final class ViewRootHandler extends Handler { 3010 @Override 3011 public String getMessageName(Message message) { 3012 switch (message.what) { 3013 case MSG_INVALIDATE: 3014 return "MSG_INVALIDATE"; 3015 case MSG_INVALIDATE_RECT: 3016 return "MSG_INVALIDATE_RECT"; 3017 case MSG_DIE: 3018 return "MSG_DIE"; 3019 case MSG_RESIZED: 3020 return "MSG_RESIZED"; 3021 case MSG_RESIZED_REPORT: 3022 return "MSG_RESIZED_REPORT"; 3023 case MSG_WINDOW_FOCUS_CHANGED: 3024 return "MSG_WINDOW_FOCUS_CHANGED"; 3025 case MSG_DISPATCH_INPUT_EVENT: 3026 return "MSG_DISPATCH_INPUT_EVENT"; 3027 case MSG_DISPATCH_APP_VISIBILITY: 3028 return "MSG_DISPATCH_APP_VISIBILITY"; 3029 case MSG_DISPATCH_GET_NEW_SURFACE: 3030 return "MSG_DISPATCH_GET_NEW_SURFACE"; 3031 case MSG_DISPATCH_KEY_FROM_IME: 3032 return "MSG_DISPATCH_KEY_FROM_IME"; 3033 case MSG_FINISH_INPUT_CONNECTION: 3034 return "MSG_FINISH_INPUT_CONNECTION"; 3035 case MSG_CHECK_FOCUS: 3036 return "MSG_CHECK_FOCUS"; 3037 case MSG_CLOSE_SYSTEM_DIALOGS: 3038 return "MSG_CLOSE_SYSTEM_DIALOGS"; 3039 case MSG_DISPATCH_DRAG_EVENT: 3040 return "MSG_DISPATCH_DRAG_EVENT"; 3041 case MSG_DISPATCH_DRAG_LOCATION_EVENT: 3042 return "MSG_DISPATCH_DRAG_LOCATION_EVENT"; 3043 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: 3044 return "MSG_DISPATCH_SYSTEM_UI_VISIBILITY"; 3045 case MSG_UPDATE_CONFIGURATION: 3046 return "MSG_UPDATE_CONFIGURATION"; 3047 case MSG_PROCESS_INPUT_EVENTS: 3048 return "MSG_PROCESS_INPUT_EVENTS"; 3049 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: 3050 return "MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST"; 3051 case MSG_DISPATCH_DONE_ANIMATING: 3052 return "MSG_DISPATCH_DONE_ANIMATING"; 3053 case MSG_WINDOW_MOVED: 3054 return "MSG_WINDOW_MOVED"; 3055 case MSG_FLUSH_LAYER_UPDATES: 3056 return "MSG_FLUSH_LAYER_UPDATES"; 3057 case MSG_SYNTHESIZE_INPUT_EVENT: 3058 return "MSG_SYNTHESIZE_INPUT_EVENT"; 3059 } 3060 return super.getMessageName(message); 3061 } 3062 3063 @Override 3064 public void handleMessage(Message msg) { 3065 switch (msg.what) { 3066 case MSG_INVALIDATE: 3067 ((View) msg.obj).invalidate(); 3068 break; 3069 case MSG_INVALIDATE_RECT: 3070 final View.AttachInfo.InvalidateInfo info = (View.AttachInfo.InvalidateInfo) msg.obj; 3071 info.target.invalidate(info.left, info.top, info.right, info.bottom); 3072 info.recycle(); 3073 break; 3074 case MSG_PROCESS_INPUT_EVENTS: 3075 mProcessInputEventsScheduled = false; 3076 doProcessInputEvents(); 3077 break; 3078 case MSG_DISPATCH_APP_VISIBILITY: 3079 handleAppVisibility(msg.arg1 != 0); 3080 break; 3081 case MSG_DISPATCH_GET_NEW_SURFACE: 3082 handleGetNewSurface(); 3083 break; 3084 case MSG_RESIZED: { 3085 // Recycled in the fall through... 3086 SomeArgs args = (SomeArgs) msg.obj; 3087 if (mWinFrame.equals(args.arg1) 3088 && mPendingOverscanInsets.equals(args.arg5) 3089 && mPendingContentInsets.equals(args.arg2) 3090 && mPendingVisibleInsets.equals(args.arg3) 3091 && args.arg4 == null) { 3092 break; 3093 } 3094 } // fall through... 3095 case MSG_RESIZED_REPORT: 3096 if (mAdded) { 3097 SomeArgs args = (SomeArgs) msg.obj; 3098 3099 Configuration config = (Configuration) args.arg4; 3100 if (config != null) { 3101 updateConfiguration(config, false); 3102 } 3103 3104 mWinFrame.set((Rect) args.arg1); 3105 mPendingOverscanInsets.set((Rect) args.arg5); 3106 mPendingContentInsets.set((Rect) args.arg2); 3107 mPendingVisibleInsets.set((Rect) args.arg3); 3108 3109 args.recycle(); 3110 3111 if (msg.what == MSG_RESIZED_REPORT) { 3112 mReportNextDraw = true; 3113 } 3114 3115 if (mView != null) { 3116 forceLayout(mView); 3117 } 3118 3119 requestLayout(); 3120 } 3121 break; 3122 case MSG_WINDOW_MOVED: 3123 if (mAdded) { 3124 final int w = mWinFrame.width(); 3125 final int h = mWinFrame.height(); 3126 final int l = msg.arg1; 3127 final int t = msg.arg2; 3128 mWinFrame.left = l; 3129 mWinFrame.right = l + w; 3130 mWinFrame.top = t; 3131 mWinFrame.bottom = t + h; 3132 3133 if (mView != null) { 3134 forceLayout(mView); 3135 } 3136 requestLayout(); 3137 } 3138 break; 3139 case MSG_WINDOW_FOCUS_CHANGED: { 3140 if (mAdded) { 3141 boolean hasWindowFocus = msg.arg1 != 0; 3142 mAttachInfo.mHasWindowFocus = hasWindowFocus; 3143 3144 profileRendering(hasWindowFocus); 3145 3146 if (hasWindowFocus) { 3147 boolean inTouchMode = msg.arg2 != 0; 3148 ensureTouchModeLocally(inTouchMode); 3149 3150 if (mAttachInfo.mHardwareRenderer != null && mSurface.isValid()){ 3151 mFullRedrawNeeded = true; 3152 try { 3153 mAttachInfo.mHardwareRenderer.initializeIfNeeded( 3154 mWidth, mHeight, mSurface); 3155 } catch (OutOfResourcesException e) { 3156 Log.e(TAG, "OutOfResourcesException locking surface", e); 3157 try { 3158 if (!mWindowSession.outOfMemory(mWindow)) { 3159 Slog.w(TAG, "No processes killed for memory; killing self"); 3160 Process.killProcess(Process.myPid()); 3161 } 3162 } catch (RemoteException ex) { 3163 } 3164 // Retry in a bit. 3165 sendMessageDelayed(obtainMessage(msg.what, msg.arg1, msg.arg2), 500); 3166 return; 3167 } 3168 } 3169 } 3170 3171 mLastWasImTarget = WindowManager.LayoutParams 3172 .mayUseInputMethod(mWindowAttributes.flags); 3173 3174 InputMethodManager imm = InputMethodManager.peekInstance(); 3175 if (mView != null) { 3176 if (hasWindowFocus && imm != null && mLastWasImTarget && 3177 !isInLocalFocusMode()) { 3178 imm.startGettingWindowFocus(mView); 3179 } 3180 mAttachInfo.mKeyDispatchState.reset(); 3181 mView.dispatchWindowFocusChanged(hasWindowFocus); 3182 mAttachInfo.mTreeObserver.dispatchOnWindowFocusChange(hasWindowFocus); 3183 } 3184 3185 // Note: must be done after the focus change callbacks, 3186 // so all of the view state is set up correctly. 3187 if (hasWindowFocus) { 3188 if (imm != null && mLastWasImTarget && !isInLocalFocusMode()) { 3189 imm.onWindowFocus(mView, mView.findFocus(), 3190 mWindowAttributes.softInputMode, 3191 !mHasHadWindowFocus, mWindowAttributes.flags); 3192 } 3193 // Clear the forward bit. We can just do this directly, since 3194 // the window manager doesn't care about it. 3195 mWindowAttributes.softInputMode &= 3196 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3197 ((WindowManager.LayoutParams)mView.getLayoutParams()) 3198 .softInputMode &= 3199 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3200 mHasHadWindowFocus = true; 3201 } 3202 3203 if (mView != null && mAccessibilityManager.isEnabled()) { 3204 if (hasWindowFocus) { 3205 mView.sendAccessibilityEvent( 3206 AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 3207 } 3208 } 3209 } 3210 } break; 3211 case MSG_DIE: 3212 doDie(); 3213 break; 3214 case MSG_DISPATCH_INPUT_EVENT: { 3215 SomeArgs args = (SomeArgs)msg.obj; 3216 InputEvent event = (InputEvent)args.arg1; 3217 InputEventReceiver receiver = (InputEventReceiver)args.arg2; 3218 enqueueInputEvent(event, receiver, 0, true); 3219 args.recycle(); 3220 } break; 3221 case MSG_SYNTHESIZE_INPUT_EVENT: { 3222 InputEvent event = (InputEvent)msg.obj; 3223 enqueueInputEvent(event, null, QueuedInputEvent.FLAG_UNHANDLED, true); 3224 } break; 3225 case MSG_DISPATCH_KEY_FROM_IME: { 3226 if (LOCAL_LOGV) Log.v( 3227 TAG, "Dispatching key " 3228 + msg.obj + " from IME to " + mView); 3229 KeyEvent event = (KeyEvent)msg.obj; 3230 if ((event.getFlags()&KeyEvent.FLAG_FROM_SYSTEM) != 0) { 3231 // The IME is trying to say this event is from the 3232 // system! Bad bad bad! 3233 //noinspection UnusedAssignment 3234 event = KeyEvent.changeFlags(event, event.getFlags() & 3235 ~KeyEvent.FLAG_FROM_SYSTEM); 3236 } 3237 enqueueInputEvent(event, null, QueuedInputEvent.FLAG_DELIVER_POST_IME, true); 3238 } break; 3239 case MSG_FINISH_INPUT_CONNECTION: { 3240 InputMethodManager imm = InputMethodManager.peekInstance(); 3241 if (imm != null) { 3242 imm.reportFinishInputConnection((InputConnection)msg.obj); 3243 } 3244 } break; 3245 case MSG_CHECK_FOCUS: { 3246 InputMethodManager imm = InputMethodManager.peekInstance(); 3247 if (imm != null) { 3248 imm.checkFocus(); 3249 } 3250 } break; 3251 case MSG_CLOSE_SYSTEM_DIALOGS: { 3252 if (mView != null) { 3253 mView.onCloseSystemDialogs((String)msg.obj); 3254 } 3255 } break; 3256 case MSG_DISPATCH_DRAG_EVENT: 3257 case MSG_DISPATCH_DRAG_LOCATION_EVENT: { 3258 DragEvent event = (DragEvent)msg.obj; 3259 event.mLocalState = mLocalDragState; // only present when this app called startDrag() 3260 handleDragEvent(event); 3261 } break; 3262 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: { 3263 handleDispatchSystemUiVisibilityChanged((SystemUiVisibilityInfo) msg.obj); 3264 } break; 3265 case MSG_UPDATE_CONFIGURATION: { 3266 Configuration config = (Configuration)msg.obj; 3267 if (config.isOtherSeqNewer(mLastConfiguration)) { 3268 config = mLastConfiguration; 3269 } 3270 updateConfiguration(config, false); 3271 } break; 3272 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: { 3273 setAccessibilityFocus(null, null); 3274 } break; 3275 case MSG_DISPATCH_DONE_ANIMATING: { 3276 handleDispatchDoneAnimating(); 3277 } break; 3278 case MSG_INVALIDATE_WORLD: { 3279 if (mView != null) { 3280 invalidateWorld(mView); 3281 } 3282 } break; 3283 case MSG_FLUSH_LAYER_UPDATES: { 3284 flushHardwareLayerUpdates(); 3285 } break; 3286 } 3287 } 3288 } 3289 3290 final ViewRootHandler mHandler = new ViewRootHandler(); 3291 3292 /** 3293 * Something in the current window tells us we need to change the touch mode. For 3294 * example, we are not in touch mode, and the user touches the screen. 3295 * 3296 * If the touch mode has changed, tell the window manager, and handle it locally. 3297 * 3298 * @param inTouchMode Whether we want to be in touch mode. 3299 * @return True if the touch mode changed and focus changed was changed as a result 3300 */ 3301 boolean ensureTouchMode(boolean inTouchMode) { 3302 if (DBG) Log.d("touchmode", "ensureTouchMode(" + inTouchMode + "), current " 3303 + "touch mode is " + mAttachInfo.mInTouchMode); 3304 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3305 3306 // tell the window manager 3307 try { 3308 if (!isInLocalFocusMode()) { 3309 mWindowSession.setInTouchMode(inTouchMode); 3310 } 3311 } catch (RemoteException e) { 3312 throw new RuntimeException(e); 3313 } 3314 3315 // handle the change 3316 return ensureTouchModeLocally(inTouchMode); 3317 } 3318 3319 /** 3320 * Ensure that the touch mode for this window is set, and if it is changing, 3321 * take the appropriate action. 3322 * @param inTouchMode Whether we want to be in touch mode. 3323 * @return True if the touch mode changed and focus changed was changed as a result 3324 */ 3325 private boolean ensureTouchModeLocally(boolean inTouchMode) { 3326 if (DBG) Log.d("touchmode", "ensureTouchModeLocally(" + inTouchMode + "), current " 3327 + "touch mode is " + mAttachInfo.mInTouchMode); 3328 3329 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3330 3331 mAttachInfo.mInTouchMode = inTouchMode; 3332 mAttachInfo.mTreeObserver.dispatchOnTouchModeChanged(inTouchMode); 3333 3334 return (inTouchMode) ? enterTouchMode() : leaveTouchMode(); 3335 } 3336 3337 private boolean enterTouchMode() { 3338 if (mView != null && mView.hasFocus()) { 3339 // note: not relying on mFocusedView here because this could 3340 // be when the window is first being added, and mFocused isn't 3341 // set yet. 3342 final View focused = mView.findFocus(); 3343 if (focused != null && !focused.isFocusableInTouchMode()) { 3344 final ViewGroup ancestorToTakeFocus = findAncestorToTakeFocusInTouchMode(focused); 3345 if (ancestorToTakeFocus != null) { 3346 // there is an ancestor that wants focus after its 3347 // descendants that is focusable in touch mode.. give it 3348 // focus 3349 return ancestorToTakeFocus.requestFocus(); 3350 } else { 3351 // There's nothing to focus. Clear and propagate through the 3352 // hierarchy, but don't attempt to place new focus. 3353 focused.clearFocusInternal(null, true, false); 3354 return true; 3355 } 3356 } 3357 } 3358 return false; 3359 } 3360 3361 /** 3362 * Find an ancestor of focused that wants focus after its descendants and is 3363 * focusable in touch mode. 3364 * @param focused The currently focused view. 3365 * @return An appropriate view, or null if no such view exists. 3366 */ 3367 private static ViewGroup findAncestorToTakeFocusInTouchMode(View focused) { 3368 ViewParent parent = focused.getParent(); 3369 while (parent instanceof ViewGroup) { 3370 final ViewGroup vgParent = (ViewGroup) parent; 3371 if (vgParent.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 3372 && vgParent.isFocusableInTouchMode()) { 3373 return vgParent; 3374 } 3375 if (vgParent.isRootNamespace()) { 3376 return null; 3377 } else { 3378 parent = vgParent.getParent(); 3379 } 3380 } 3381 return null; 3382 } 3383 3384 private boolean leaveTouchMode() { 3385 if (mView != null) { 3386 if (mView.hasFocus()) { 3387 View focusedView = mView.findFocus(); 3388 if (!(focusedView instanceof ViewGroup)) { 3389 // some view has focus, let it keep it 3390 return false; 3391 } else if (((ViewGroup) focusedView).getDescendantFocusability() != 3392 ViewGroup.FOCUS_AFTER_DESCENDANTS) { 3393 // some view group has focus, and doesn't prefer its children 3394 // over itself for focus, so let them keep it. 3395 return false; 3396 } 3397 } 3398 3399 // find the best view to give focus to in this brave new non-touch-mode 3400 // world 3401 final View focused = focusSearch(null, View.FOCUS_DOWN); 3402 if (focused != null) { 3403 return focused.requestFocus(View.FOCUS_DOWN); 3404 } 3405 } 3406 return false; 3407 } 3408 3409 /** 3410 * Base class for implementing a stage in the chain of responsibility 3411 * for processing input events. 3412 * <p> 3413 * Events are delivered to the stage by the {@link #deliver} method. The stage 3414 * then has the choice of finishing the event or forwarding it to the next stage. 3415 * </p> 3416 */ 3417 abstract class InputStage { 3418 private final InputStage mNext; 3419 3420 protected static final int FORWARD = 0; 3421 protected static final int FINISH_HANDLED = 1; 3422 protected static final int FINISH_NOT_HANDLED = 2; 3423 3424 /** 3425 * Creates an input stage. 3426 * @param next The next stage to which events should be forwarded. 3427 */ 3428 public InputStage(InputStage next) { 3429 mNext = next; 3430 } 3431 3432 /** 3433 * Delivers an event to be processed. 3434 */ 3435 public final void deliver(QueuedInputEvent q) { 3436 if ((q.mFlags & QueuedInputEvent.FLAG_FINISHED) != 0) { 3437 forward(q); 3438 } else if (shouldDropInputEvent(q)) { 3439 finish(q, false); 3440 } else { 3441 apply(q, onProcess(q)); 3442 } 3443 } 3444 3445 /** 3446 * Marks the the input event as finished then forwards it to the next stage. 3447 */ 3448 protected void finish(QueuedInputEvent q, boolean handled) { 3449 q.mFlags |= QueuedInputEvent.FLAG_FINISHED; 3450 if (handled) { 3451 q.mFlags |= QueuedInputEvent.FLAG_FINISHED_HANDLED; 3452 } 3453 forward(q); 3454 } 3455 3456 /** 3457 * Forwards the event to the next stage. 3458 */ 3459 protected void forward(QueuedInputEvent q) { 3460 onDeliverToNext(q); 3461 } 3462 3463 /** 3464 * Applies a result code from {@link #onProcess} to the specified event. 3465 */ 3466 protected void apply(QueuedInputEvent q, int result) { 3467 if (result == FORWARD) { 3468 forward(q); 3469 } else if (result == FINISH_HANDLED) { 3470 finish(q, true); 3471 } else if (result == FINISH_NOT_HANDLED) { 3472 finish(q, false); 3473 } else { 3474 throw new IllegalArgumentException("Invalid result: " + result); 3475 } 3476 } 3477 3478 /** 3479 * Called when an event is ready to be processed. 3480 * @return A result code indicating how the event was handled. 3481 */ 3482 protected int onProcess(QueuedInputEvent q) { 3483 return FORWARD; 3484 } 3485 3486 /** 3487 * Called when an event is being delivered to the next stage. 3488 */ 3489 protected void onDeliverToNext(QueuedInputEvent q) { 3490 if (DEBUG_INPUT_STAGES) { 3491 Log.v(TAG, "Done with " + getClass().getSimpleName() + ". " + q); 3492 } 3493 if (mNext != null) { 3494 mNext.deliver(q); 3495 } else { 3496 finishInputEvent(q); 3497 } 3498 } 3499 3500 protected boolean shouldDropInputEvent(QueuedInputEvent q) { 3501 if (mView == null || !mAdded) { 3502 Slog.w(TAG, "Dropping event due to root view being removed: " + q.mEvent); 3503 return true; 3504 } else if (!mAttachInfo.mHasWindowFocus && 3505 !q.mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER) && 3506 !isTerminalInputEvent(q.mEvent)) { 3507 // If this is a focused event and the window doesn't currently have input focus, 3508 // then drop this event. This could be an event that came back from the previous 3509 // stage but the window has lost focus in the meantime. 3510 Slog.w(TAG, "Dropping event due to no window focus: " + q.mEvent); 3511 return true; 3512 } 3513 return false; 3514 } 3515 3516 void dump(String prefix, PrintWriter writer) { 3517 if (mNext != null) { 3518 mNext.dump(prefix, writer); 3519 } 3520 } 3521 } 3522 3523 /** 3524 * Base class for implementing an input pipeline stage that supports 3525 * asynchronous and out-of-order processing of input events. 3526 * <p> 3527 * In addition to what a normal input stage can do, an asynchronous 3528 * input stage may also defer an input event that has been delivered to it 3529 * and finish or forward it later. 3530 * </p> 3531 */ 3532 abstract class AsyncInputStage extends InputStage { 3533 private final String mTraceCounter; 3534 3535 private QueuedInputEvent mQueueHead; 3536 private QueuedInputEvent mQueueTail; 3537 private int mQueueLength; 3538 3539 protected static final int DEFER = 3; 3540 3541 /** 3542 * Creates an asynchronous input stage. 3543 * @param next The next stage to which events should be forwarded. 3544 * @param traceCounter The name of a counter to record the size of 3545 * the queue of pending events. 3546 */ 3547 public AsyncInputStage(InputStage next, String traceCounter) { 3548 super(next); 3549 mTraceCounter = traceCounter; 3550 } 3551 3552 /** 3553 * Marks the event as deferred, which is to say that it will be handled 3554 * asynchronously. The caller is responsible for calling {@link #forward} 3555 * or {@link #finish} later when it is done handling the event. 3556 */ 3557 protected void defer(QueuedInputEvent q) { 3558 q.mFlags |= QueuedInputEvent.FLAG_DEFERRED; 3559 enqueue(q); 3560 } 3561 3562 @Override 3563 protected void forward(QueuedInputEvent q) { 3564 // Clear the deferred flag. 3565 q.mFlags &= ~QueuedInputEvent.FLAG_DEFERRED; 3566 3567 // Fast path if the queue is empty. 3568 QueuedInputEvent curr = mQueueHead; 3569 if (curr == null) { 3570 super.forward(q); 3571 return; 3572 } 3573 3574 // Determine whether the event must be serialized behind any others 3575 // before it can be delivered to the next stage. This is done because 3576 // deferred events might be handled out of order by the stage. 3577 final int deviceId = q.mEvent.getDeviceId(); 3578 QueuedInputEvent prev = null; 3579 boolean blocked = false; 3580 while (curr != null && curr != q) { 3581 if (!blocked && deviceId == curr.mEvent.getDeviceId()) { 3582 blocked = true; 3583 } 3584 prev = curr; 3585 curr = curr.mNext; 3586 } 3587 3588 // If the event is blocked, then leave it in the queue to be delivered later. 3589 // Note that the event might not yet be in the queue if it was not previously 3590 // deferred so we will enqueue it if needed. 3591 if (blocked) { 3592 if (curr == null) { 3593 enqueue(q); 3594 } 3595 return; 3596 } 3597 3598 // The event is not blocked. Deliver it immediately. 3599 if (curr != null) { 3600 curr = curr.mNext; 3601 dequeue(q, prev); 3602 } 3603 super.forward(q); 3604 3605 // Dequeuing this event may have unblocked successors. Deliver them. 3606 while (curr != null) { 3607 if (deviceId == curr.mEvent.getDeviceId()) { 3608 if ((curr.mFlags & QueuedInputEvent.FLAG_DEFERRED) != 0) { 3609 break; 3610 } 3611 QueuedInputEvent next = curr.mNext; 3612 dequeue(curr, prev); 3613 super.forward(curr); 3614 curr = next; 3615 } else { 3616 prev = curr; 3617 curr = curr.mNext; 3618 } 3619 } 3620 } 3621 3622 @Override 3623 protected void apply(QueuedInputEvent q, int result) { 3624 if (result == DEFER) { 3625 defer(q); 3626 } else { 3627 super.apply(q, result); 3628 } 3629 } 3630 3631 private void enqueue(QueuedInputEvent q) { 3632 if (mQueueTail == null) { 3633 mQueueHead = q; 3634 mQueueTail = q; 3635 } else { 3636 mQueueTail.mNext = q; 3637 mQueueTail = q; 3638 } 3639 3640 mQueueLength += 1; 3641 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 3642 } 3643 3644 private void dequeue(QueuedInputEvent q, QueuedInputEvent prev) { 3645 if (prev == null) { 3646 mQueueHead = q.mNext; 3647 } else { 3648 prev.mNext = q.mNext; 3649 } 3650 if (mQueueTail == q) { 3651 mQueueTail = prev; 3652 } 3653 q.mNext = null; 3654 3655 mQueueLength -= 1; 3656 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 3657 } 3658 3659 @Override 3660 void dump(String prefix, PrintWriter writer) { 3661 writer.print(prefix); 3662 writer.print(getClass().getName()); 3663 writer.print(": mQueueLength="); 3664 writer.println(mQueueLength); 3665 3666 super.dump(prefix, writer); 3667 } 3668 } 3669 3670 /** 3671 * Delivers pre-ime input events to a native activity. 3672 * Does not support pointer events. 3673 */ 3674 final class NativePreImeInputStage extends AsyncInputStage 3675 implements InputQueue.FinishedInputEventCallback { 3676 public NativePreImeInputStage(InputStage next, String traceCounter) { 3677 super(next, traceCounter); 3678 } 3679 3680 @Override 3681 protected int onProcess(QueuedInputEvent q) { 3682 if (mInputQueue != null && q.mEvent instanceof KeyEvent) { 3683 mInputQueue.sendInputEvent(q.mEvent, q, true, this); 3684 return DEFER; 3685 } 3686 return FORWARD; 3687 } 3688 3689 @Override 3690 public void onFinishedInputEvent(Object token, boolean handled) { 3691 QueuedInputEvent q = (QueuedInputEvent)token; 3692 if (handled) { 3693 finish(q, true); 3694 return; 3695 } 3696 forward(q); 3697 } 3698 } 3699 3700 /** 3701 * Delivers pre-ime input events to the view hierarchy. 3702 * Does not support pointer events. 3703 */ 3704 final class ViewPreImeInputStage extends InputStage { 3705 public ViewPreImeInputStage(InputStage next) { 3706 super(next); 3707 } 3708 3709 @Override 3710 protected int onProcess(QueuedInputEvent q) { 3711 if (q.mEvent instanceof KeyEvent) { 3712 return processKeyEvent(q); 3713 } 3714 return FORWARD; 3715 } 3716 3717 private int processKeyEvent(QueuedInputEvent q) { 3718 final KeyEvent event = (KeyEvent)q.mEvent; 3719 if (mView.dispatchKeyEventPreIme(event)) { 3720 return FINISH_HANDLED; 3721 } 3722 return FORWARD; 3723 } 3724 } 3725 3726 /** 3727 * Delivers input events to the ime. 3728 * Does not support pointer events. 3729 */ 3730 final class ImeInputStage extends AsyncInputStage 3731 implements InputMethodManager.FinishedInputEventCallback { 3732 public ImeInputStage(InputStage next, String traceCounter) { 3733 super(next, traceCounter); 3734 } 3735 3736 @Override 3737 protected int onProcess(QueuedInputEvent q) { 3738 if (mLastWasImTarget && !isInLocalFocusMode()) { 3739 InputMethodManager imm = InputMethodManager.peekInstance(); 3740 if (imm != null) { 3741 final InputEvent event = q.mEvent; 3742 if (DEBUG_IMF) Log.v(TAG, "Sending input event to IME: " + event); 3743 int result = imm.dispatchInputEvent(event, q, this, mHandler); 3744 if (result == InputMethodManager.DISPATCH_HANDLED) { 3745 return FINISH_HANDLED; 3746 } else if (result == InputMethodManager.DISPATCH_NOT_HANDLED) { 3747 // The IME could not handle it, so skip along to the next InputStage 3748 return FORWARD; 3749 } else { 3750 return DEFER; // callback will be invoked later 3751 } 3752 } 3753 } 3754 return FORWARD; 3755 } 3756 3757 @Override 3758 public void onFinishedInputEvent(Object token, boolean handled) { 3759 QueuedInputEvent q = (QueuedInputEvent)token; 3760 if (handled) { 3761 finish(q, true); 3762 return; 3763 } 3764 forward(q); 3765 } 3766 } 3767 3768 /** 3769 * Performs early processing of post-ime input events. 3770 */ 3771 final class EarlyPostImeInputStage extends InputStage { 3772 public EarlyPostImeInputStage(InputStage next) { 3773 super(next); 3774 } 3775 3776 @Override 3777 protected int onProcess(QueuedInputEvent q) { 3778 if (q.mEvent instanceof KeyEvent) { 3779 return processKeyEvent(q); 3780 } else { 3781 final int source = q.mEvent.getSource(); 3782 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 3783 return processPointerEvent(q); 3784 } 3785 } 3786 return FORWARD; 3787 } 3788 3789 private int processKeyEvent(QueuedInputEvent q) { 3790 final KeyEvent event = (KeyEvent)q.mEvent; 3791 3792 // If the key's purpose is to exit touch mode then we consume it 3793 // and consider it handled. 3794 if (checkForLeavingTouchModeAndConsume(event)) { 3795 return FINISH_HANDLED; 3796 } 3797 3798 // Make sure the fallback event policy sees all keys that will be 3799 // delivered to the view hierarchy. 3800 mFallbackEventHandler.preDispatchKeyEvent(event); 3801 return FORWARD; 3802 } 3803 3804 private int processPointerEvent(QueuedInputEvent q) { 3805 final MotionEvent event = (MotionEvent)q.mEvent; 3806 3807 // Translate the pointer event for compatibility, if needed. 3808 if (mTranslator != null) { 3809 mTranslator.translateEventInScreenToAppWindow(event); 3810 } 3811 3812 // Enter touch mode on down or scroll. 3813 final int action = event.getAction(); 3814 if (action == MotionEvent.ACTION_DOWN || action == MotionEvent.ACTION_SCROLL) { 3815 ensureTouchMode(true); 3816 } 3817 3818 // Offset the scroll position. 3819 if (mCurScrollY != 0) { 3820 event.offsetLocation(0, mCurScrollY); 3821 } 3822 3823 // Remember the touch position for possible drag-initiation. 3824 if (event.isTouchEvent()) { 3825 mLastTouchPoint.x = event.getRawX(); 3826 mLastTouchPoint.y = event.getRawY(); 3827 } 3828 return FORWARD; 3829 } 3830 } 3831 3832 /** 3833 * Delivers post-ime input events to a native activity. 3834 */ 3835 final class NativePostImeInputStage extends AsyncInputStage 3836 implements InputQueue.FinishedInputEventCallback { 3837 public NativePostImeInputStage(InputStage next, String traceCounter) { 3838 super(next, traceCounter); 3839 } 3840 3841 @Override 3842 protected int onProcess(QueuedInputEvent q) { 3843 if (mInputQueue != null) { 3844 mInputQueue.sendInputEvent(q.mEvent, q, false, this); 3845 return DEFER; 3846 } 3847 return FORWARD; 3848 } 3849 3850 @Override 3851 public void onFinishedInputEvent(Object token, boolean handled) { 3852 QueuedInputEvent q = (QueuedInputEvent)token; 3853 if (handled) { 3854 finish(q, true); 3855 return; 3856 } 3857 forward(q); 3858 } 3859 } 3860 3861 /** 3862 * Delivers post-ime input events to the view hierarchy. 3863 */ 3864 final class ViewPostImeInputStage extends InputStage { 3865 public ViewPostImeInputStage(InputStage next) { 3866 super(next); 3867 } 3868 3869 @Override 3870 protected int onProcess(QueuedInputEvent q) { 3871 if (q.mEvent instanceof KeyEvent) { 3872 return processKeyEvent(q); 3873 } else { 3874 // If delivering a new non-key event, make sure the window is 3875 // now allowed to start updating. 3876 handleDispatchDoneAnimating(); 3877 final int source = q.mEvent.getSource(); 3878 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 3879 return processPointerEvent(q); 3880 } else if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 3881 return processTrackballEvent(q); 3882 } else { 3883 return processGenericMotionEvent(q); 3884 } 3885 } 3886 } 3887 3888 private int processKeyEvent(QueuedInputEvent q) { 3889 final KeyEvent event = (KeyEvent)q.mEvent; 3890 3891 if (event.getAction() != KeyEvent.ACTION_UP) { 3892 // If delivering a new key event, make sure the window is 3893 // now allowed to start updating. 3894 handleDispatchDoneAnimating(); 3895 } 3896 3897 // Deliver the key to the view hierarchy. 3898 if (mView.dispatchKeyEvent(event)) { 3899 return FINISH_HANDLED; 3900 } 3901 3902 if (shouldDropInputEvent(q)) { 3903 return FINISH_NOT_HANDLED; 3904 } 3905 3906 // If the Control modifier is held, try to interpret the key as a shortcut. 3907 if (event.getAction() == KeyEvent.ACTION_DOWN 3908 && event.isCtrlPressed() 3909 && event.getRepeatCount() == 0 3910 && !KeyEvent.isModifierKey(event.getKeyCode())) { 3911 if (mView.dispatchKeyShortcutEvent(event)) { 3912 return FINISH_HANDLED; 3913 } 3914 if (shouldDropInputEvent(q)) { 3915 return FINISH_NOT_HANDLED; 3916 } 3917 } 3918 3919 // Apply the fallback event policy. 3920 if (mFallbackEventHandler.dispatchKeyEvent(event)) { 3921 return FINISH_HANDLED; 3922 } 3923 if (shouldDropInputEvent(q)) { 3924 return FINISH_NOT_HANDLED; 3925 } 3926 3927 // Handle automatic focus changes. 3928 if (event.getAction() == KeyEvent.ACTION_DOWN) { 3929 int direction = 0; 3930 switch (event.getKeyCode()) { 3931 case KeyEvent.KEYCODE_DPAD_LEFT: 3932 if (event.hasNoModifiers()) { 3933 direction = View.FOCUS_LEFT; 3934 } 3935 break; 3936 case KeyEvent.KEYCODE_DPAD_RIGHT: 3937 if (event.hasNoModifiers()) { 3938 direction = View.FOCUS_RIGHT; 3939 } 3940 break; 3941 case KeyEvent.KEYCODE_DPAD_UP: 3942 if (event.hasNoModifiers()) { 3943 direction = View.FOCUS_UP; 3944 } 3945 break; 3946 case KeyEvent.KEYCODE_DPAD_DOWN: 3947 if (event.hasNoModifiers()) { 3948 direction = View.FOCUS_DOWN; 3949 } 3950 break; 3951 case KeyEvent.KEYCODE_TAB: 3952 if (event.hasNoModifiers()) { 3953 direction = View.FOCUS_FORWARD; 3954 } else if (event.hasModifiers(KeyEvent.META_SHIFT_ON)) { 3955 direction = View.FOCUS_BACKWARD; 3956 } 3957 break; 3958 } 3959 if (direction != 0) { 3960 View focused = mView.findFocus(); 3961 if (focused != null) { 3962 View v = focused.focusSearch(direction); 3963 if (v != null && v != focused) { 3964 // do the math the get the interesting rect 3965 // of previous focused into the coord system of 3966 // newly focused view 3967 focused.getFocusedRect(mTempRect); 3968 if (mView instanceof ViewGroup) { 3969 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 3970 focused, mTempRect); 3971 ((ViewGroup) mView).offsetRectIntoDescendantCoords( 3972 v, mTempRect); 3973 } 3974 if (v.requestFocus(direction, mTempRect)) { 3975 playSoundEffect(SoundEffectConstants 3976 .getContantForFocusDirection(direction)); 3977 return FINISH_HANDLED; 3978 } 3979 } 3980 3981 // Give the focused view a last chance to handle the dpad key. 3982 if (mView.dispatchUnhandledMove(focused, direction)) { 3983 return FINISH_HANDLED; 3984 } 3985 } else { 3986 // find the best view to give focus to in this non-touch-mode with no-focus 3987 View v = focusSearch(null, direction); 3988 if (v != null && v.requestFocus(direction)) { 3989 return FINISH_HANDLED; 3990 } 3991 } 3992 } 3993 } 3994 return FORWARD; 3995 } 3996 3997 private int processPointerEvent(QueuedInputEvent q) { 3998 final MotionEvent event = (MotionEvent)q.mEvent; 3999 4000 if (mView.dispatchPointerEvent(event)) { 4001 return FINISH_HANDLED; 4002 } 4003 return FORWARD; 4004 } 4005 4006 private int processTrackballEvent(QueuedInputEvent q) { 4007 final MotionEvent event = (MotionEvent)q.mEvent; 4008 4009 if (mView.dispatchTrackballEvent(event)) { 4010 return FINISH_HANDLED; 4011 } 4012 return FORWARD; 4013 } 4014 4015 private int processGenericMotionEvent(QueuedInputEvent q) { 4016 final MotionEvent event = (MotionEvent)q.mEvent; 4017 4018 // Deliver the event to the view. 4019 if (mView.dispatchGenericMotionEvent(event)) { 4020 return FINISH_HANDLED; 4021 } 4022 return FORWARD; 4023 } 4024 } 4025 4026 /** 4027 * Performs synthesis of new input events from unhandled input events. 4028 */ 4029 final class SyntheticInputStage extends InputStage { 4030 private final SyntheticTrackballHandler mTrackball = new SyntheticTrackballHandler(); 4031 private final SyntheticJoystickHandler mJoystick = new SyntheticJoystickHandler(); 4032 private final SyntheticTouchNavigationHandler mTouchNavigation = 4033 new SyntheticTouchNavigationHandler(); 4034 private final SyntheticKeyboardHandler mKeyboard = new SyntheticKeyboardHandler(); 4035 4036 public SyntheticInputStage() { 4037 super(null); 4038 } 4039 4040 @Override 4041 protected int onProcess(QueuedInputEvent q) { 4042 q.mFlags |= QueuedInputEvent.FLAG_RESYNTHESIZED; 4043 if (q.mEvent instanceof MotionEvent) { 4044 final MotionEvent event = (MotionEvent)q.mEvent; 4045 final int source = event.getSource(); 4046 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 4047 mTrackball.process(event); 4048 return FINISH_HANDLED; 4049 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 4050 mJoystick.process(event); 4051 return FINISH_HANDLED; 4052 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 4053 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 4054 mTouchNavigation.process(event); 4055 return FINISH_HANDLED; 4056 } 4057 } else if ((q.mFlags & QueuedInputEvent.FLAG_UNHANDLED) != 0) { 4058 mKeyboard.process((KeyEvent)q.mEvent); 4059 return FINISH_HANDLED; 4060 } 4061 4062 return FORWARD; 4063 } 4064 4065 @Override 4066 protected void onDeliverToNext(QueuedInputEvent q) { 4067 if ((q.mFlags & QueuedInputEvent.FLAG_RESYNTHESIZED) == 0) { 4068 // Cancel related synthetic events if any prior stage has handled the event. 4069 if (q.mEvent instanceof MotionEvent) { 4070 final MotionEvent event = (MotionEvent)q.mEvent; 4071 final int source = event.getSource(); 4072 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 4073 mTrackball.cancel(event); 4074 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 4075 mJoystick.cancel(event); 4076 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 4077 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 4078 mTouchNavigation.cancel(event); 4079 } 4080 } 4081 } 4082 super.onDeliverToNext(q); 4083 } 4084 } 4085 4086 /** 4087 * Creates dpad events from unhandled trackball movements. 4088 */ 4089 final class SyntheticTrackballHandler { 4090 private final TrackballAxis mX = new TrackballAxis(); 4091 private final TrackballAxis mY = new TrackballAxis(); 4092 private long mLastTime; 4093 4094 public void process(MotionEvent event) { 4095 // Translate the trackball event into DPAD keys and try to deliver those. 4096 long curTime = SystemClock.uptimeMillis(); 4097 if ((mLastTime + MAX_TRACKBALL_DELAY) < curTime) { 4098 // It has been too long since the last movement, 4099 // so restart at the beginning. 4100 mX.reset(0); 4101 mY.reset(0); 4102 mLastTime = curTime; 4103 } 4104 4105 final int action = event.getAction(); 4106 final int metaState = event.getMetaState(); 4107 switch (action) { 4108 case MotionEvent.ACTION_DOWN: 4109 mX.reset(2); 4110 mY.reset(2); 4111 enqueueInputEvent(new KeyEvent(curTime, curTime, 4112 KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 4113 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4114 InputDevice.SOURCE_KEYBOARD)); 4115 break; 4116 case MotionEvent.ACTION_UP: 4117 mX.reset(2); 4118 mY.reset(2); 4119 enqueueInputEvent(new KeyEvent(curTime, curTime, 4120 KeyEvent.ACTION_UP, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 4121 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4122 InputDevice.SOURCE_KEYBOARD)); 4123 break; 4124 } 4125 4126 if (DEBUG_TRACKBALL) Log.v(TAG, "TB X=" + mX.position + " step=" 4127 + mX.step + " dir=" + mX.dir + " acc=" + mX.acceleration 4128 + " move=" + event.getX() 4129 + " / Y=" + mY.position + " step=" 4130 + mY.step + " dir=" + mY.dir + " acc=" + mY.acceleration 4131 + " move=" + event.getY()); 4132 final float xOff = mX.collect(event.getX(), event.getEventTime(), "X"); 4133 final float yOff = mY.collect(event.getY(), event.getEventTime(), "Y"); 4134 4135 // Generate DPAD events based on the trackball movement. 4136 // We pick the axis that has moved the most as the direction of 4137 // the DPAD. When we generate DPAD events for one axis, then the 4138 // other axis is reset -- we don't want to perform DPAD jumps due 4139 // to slight movements in the trackball when making major movements 4140 // along the other axis. 4141 int keycode = 0; 4142 int movement = 0; 4143 float accel = 1; 4144 if (xOff > yOff) { 4145 movement = mX.generate(); 4146 if (movement != 0) { 4147 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_RIGHT 4148 : KeyEvent.KEYCODE_DPAD_LEFT; 4149 accel = mX.acceleration; 4150 mY.reset(2); 4151 } 4152 } else if (yOff > 0) { 4153 movement = mY.generate(); 4154 if (movement != 0) { 4155 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_DOWN 4156 : KeyEvent.KEYCODE_DPAD_UP; 4157 accel = mY.acceleration; 4158 mX.reset(2); 4159 } 4160 } 4161 4162 if (keycode != 0) { 4163 if (movement < 0) movement = -movement; 4164 int accelMovement = (int)(movement * accel); 4165 if (DEBUG_TRACKBALL) Log.v(TAG, "Move: movement=" + movement 4166 + " accelMovement=" + accelMovement 4167 + " accel=" + accel); 4168 if (accelMovement > movement) { 4169 if (DEBUG_TRACKBALL) Log.v(TAG, "Delivering fake DPAD: " 4170 + keycode); 4171 movement--; 4172 int repeatCount = accelMovement - movement; 4173 enqueueInputEvent(new KeyEvent(curTime, curTime, 4174 KeyEvent.ACTION_MULTIPLE, keycode, repeatCount, metaState, 4175 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4176 InputDevice.SOURCE_KEYBOARD)); 4177 } 4178 while (movement > 0) { 4179 if (DEBUG_TRACKBALL) Log.v(TAG, "Delivering fake DPAD: " 4180 + keycode); 4181 movement--; 4182 curTime = SystemClock.uptimeMillis(); 4183 enqueueInputEvent(new KeyEvent(curTime, curTime, 4184 KeyEvent.ACTION_DOWN, keycode, 0, metaState, 4185 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4186 InputDevice.SOURCE_KEYBOARD)); 4187 enqueueInputEvent(new KeyEvent(curTime, curTime, 4188 KeyEvent.ACTION_UP, keycode, 0, metaState, 4189 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4190 InputDevice.SOURCE_KEYBOARD)); 4191 } 4192 mLastTime = curTime; 4193 } 4194 } 4195 4196 public void cancel(MotionEvent event) { 4197 mLastTime = Integer.MIN_VALUE; 4198 4199 // If we reach this, we consumed a trackball event. 4200 // Because we will not translate the trackball event into a key event, 4201 // touch mode will not exit, so we exit touch mode here. 4202 if (mView != null && mAdded) { 4203 ensureTouchMode(false); 4204 } 4205 } 4206 } 4207 4208 /** 4209 * Maintains state information for a single trackball axis, generating 4210 * discrete (DPAD) movements based on raw trackball motion. 4211 */ 4212 static final class TrackballAxis { 4213 /** 4214 * The maximum amount of acceleration we will apply. 4215 */ 4216 static final float MAX_ACCELERATION = 20; 4217 4218 /** 4219 * The maximum amount of time (in milliseconds) between events in order 4220 * for us to consider the user to be doing fast trackball movements, 4221 * and thus apply an acceleration. 4222 */ 4223 static final long FAST_MOVE_TIME = 150; 4224 4225 /** 4226 * Scaling factor to the time (in milliseconds) between events to how 4227 * much to multiple/divide the current acceleration. When movement 4228 * is < FAST_MOVE_TIME this multiplies the acceleration; when > 4229 * FAST_MOVE_TIME it divides it. 4230 */ 4231 static final float ACCEL_MOVE_SCALING_FACTOR = (1.0f/40); 4232 4233 static final float FIRST_MOVEMENT_THRESHOLD = 0.5f; 4234 static final float SECOND_CUMULATIVE_MOVEMENT_THRESHOLD = 2.0f; 4235 static final float SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD = 1.0f; 4236 4237 float position; 4238 float acceleration = 1; 4239 long lastMoveTime = 0; 4240 int step; 4241 int dir; 4242 int nonAccelMovement; 4243 4244 void reset(int _step) { 4245 position = 0; 4246 acceleration = 1; 4247 lastMoveTime = 0; 4248 step = _step; 4249 dir = 0; 4250 } 4251 4252 /** 4253 * Add trackball movement into the state. If the direction of movement 4254 * has been reversed, the state is reset before adding the 4255 * movement (so that you don't have to compensate for any previously 4256 * collected movement before see the result of the movement in the 4257 * new direction). 4258 * 4259 * @return Returns the absolute value of the amount of movement 4260 * collected so far. 4261 */ 4262 float collect(float off, long time, String axis) { 4263 long normTime; 4264 if (off > 0) { 4265 normTime = (long)(off * FAST_MOVE_TIME); 4266 if (dir < 0) { 4267 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to positive!"); 4268 position = 0; 4269 step = 0; 4270 acceleration = 1; 4271 lastMoveTime = 0; 4272 } 4273 dir = 1; 4274 } else if (off < 0) { 4275 normTime = (long)((-off) * FAST_MOVE_TIME); 4276 if (dir > 0) { 4277 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to negative!"); 4278 position = 0; 4279 step = 0; 4280 acceleration = 1; 4281 lastMoveTime = 0; 4282 } 4283 dir = -1; 4284 } else { 4285 normTime = 0; 4286 } 4287 4288 // The number of milliseconds between each movement that is 4289 // considered "normal" and will not result in any acceleration 4290 // or deceleration, scaled by the offset we have here. 4291 if (normTime > 0) { 4292 long delta = time - lastMoveTime; 4293 lastMoveTime = time; 4294 float acc = acceleration; 4295 if (delta < normTime) { 4296 // The user is scrolling rapidly, so increase acceleration. 4297 float scale = (normTime-delta) * ACCEL_MOVE_SCALING_FACTOR; 4298 if (scale > 1) acc *= scale; 4299 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " accelerate: off=" 4300 + off + " normTime=" + normTime + " delta=" + delta 4301 + " scale=" + scale + " acc=" + acc); 4302 acceleration = acc < MAX_ACCELERATION ? acc : MAX_ACCELERATION; 4303 } else { 4304 // The user is scrolling slowly, so decrease acceleration. 4305 float scale = (delta-normTime) * ACCEL_MOVE_SCALING_FACTOR; 4306 if (scale > 1) acc /= scale; 4307 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " deccelerate: off=" 4308 + off + " normTime=" + normTime + " delta=" + delta 4309 + " scale=" + scale + " acc=" + acc); 4310 acceleration = acc > 1 ? acc : 1; 4311 } 4312 } 4313 position += off; 4314 return Math.abs(position); 4315 } 4316 4317 /** 4318 * Generate the number of discrete movement events appropriate for 4319 * the currently collected trackball movement. 4320 * 4321 * @return Returns the number of discrete movements, either positive 4322 * or negative, or 0 if there is not enough trackball movement yet 4323 * for a discrete movement. 4324 */ 4325 int generate() { 4326 int movement = 0; 4327 nonAccelMovement = 0; 4328 do { 4329 final int dir = position >= 0 ? 1 : -1; 4330 switch (step) { 4331 // If we are going to execute the first step, then we want 4332 // to do this as soon as possible instead of waiting for 4333 // a full movement, in order to make things look responsive. 4334 case 0: 4335 if (Math.abs(position) < FIRST_MOVEMENT_THRESHOLD) { 4336 return movement; 4337 } 4338 movement += dir; 4339 nonAccelMovement += dir; 4340 step = 1; 4341 break; 4342 // If we have generated the first movement, then we need 4343 // to wait for the second complete trackball motion before 4344 // generating the second discrete movement. 4345 case 1: 4346 if (Math.abs(position) < SECOND_CUMULATIVE_MOVEMENT_THRESHOLD) { 4347 return movement; 4348 } 4349 movement += dir; 4350 nonAccelMovement += dir; 4351 position -= SECOND_CUMULATIVE_MOVEMENT_THRESHOLD * dir; 4352 step = 2; 4353 break; 4354 // After the first two, we generate discrete movements 4355 // consistently with the trackball, applying an acceleration 4356 // if the trackball is moving quickly. This is a simple 4357 // acceleration on top of what we already compute based 4358 // on how quickly the wheel is being turned, to apply 4359 // a longer increasing acceleration to continuous movement 4360 // in one direction. 4361 default: 4362 if (Math.abs(position) < SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD) { 4363 return movement; 4364 } 4365 movement += dir; 4366 position -= dir * SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD; 4367 float acc = acceleration; 4368 acc *= 1.1f; 4369 acceleration = acc < MAX_ACCELERATION ? acc : acceleration; 4370 break; 4371 } 4372 } while (true); 4373 } 4374 } 4375 4376 /** 4377 * Creates dpad events from unhandled joystick movements. 4378 */ 4379 final class SyntheticJoystickHandler extends Handler { 4380 private final static String TAG = "SyntheticJoystickHandler"; 4381 private final static int MSG_ENQUEUE_X_AXIS_KEY_REPEAT = 1; 4382 private final static int MSG_ENQUEUE_Y_AXIS_KEY_REPEAT = 2; 4383 4384 private int mLastXDirection; 4385 private int mLastYDirection; 4386 private int mLastXKeyCode; 4387 private int mLastYKeyCode; 4388 4389 public SyntheticJoystickHandler() { 4390 super(true); 4391 } 4392 4393 @Override 4394 public void handleMessage(Message msg) { 4395 switch (msg.what) { 4396 case MSG_ENQUEUE_X_AXIS_KEY_REPEAT: 4397 case MSG_ENQUEUE_Y_AXIS_KEY_REPEAT: { 4398 KeyEvent oldEvent = (KeyEvent)msg.obj; 4399 KeyEvent e = KeyEvent.changeTimeRepeat(oldEvent, 4400 SystemClock.uptimeMillis(), 4401 oldEvent.getRepeatCount() + 1); 4402 if (mAttachInfo.mHasWindowFocus) { 4403 enqueueInputEvent(e); 4404 Message m = obtainMessage(msg.what, e); 4405 m.setAsynchronous(true); 4406 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatDelay()); 4407 } 4408 } break; 4409 } 4410 } 4411 4412 public void process(MotionEvent event) { 4413 switch(event.getActionMasked()) { 4414 case MotionEvent.ACTION_CANCEL: 4415 cancel(event); 4416 break; 4417 case MotionEvent.ACTION_MOVE: 4418 update(event, true); 4419 break; 4420 default: 4421 Log.w(TAG, "Unexpected action: " + event.getActionMasked()); 4422 } 4423 } 4424 4425 private void cancel(MotionEvent event) { 4426 removeMessages(MSG_ENQUEUE_X_AXIS_KEY_REPEAT); 4427 removeMessages(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT); 4428 update(event, false); 4429 } 4430 4431 private void update(MotionEvent event, boolean synthesizeNewKeys) { 4432 final long time = event.getEventTime(); 4433 final int metaState = event.getMetaState(); 4434 final int deviceId = event.getDeviceId(); 4435 final int source = event.getSource(); 4436 4437 int xDirection = joystickAxisValueToDirection( 4438 event.getAxisValue(MotionEvent.AXIS_HAT_X)); 4439 if (xDirection == 0) { 4440 xDirection = joystickAxisValueToDirection(event.getX()); 4441 } 4442 4443 int yDirection = joystickAxisValueToDirection( 4444 event.getAxisValue(MotionEvent.AXIS_HAT_Y)); 4445 if (yDirection == 0) { 4446 yDirection = joystickAxisValueToDirection(event.getY()); 4447 } 4448 4449 if (xDirection != mLastXDirection) { 4450 if (mLastXKeyCode != 0) { 4451 removeMessages(MSG_ENQUEUE_X_AXIS_KEY_REPEAT); 4452 enqueueInputEvent(new KeyEvent(time, time, 4453 KeyEvent.ACTION_UP, mLastXKeyCode, 0, metaState, 4454 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4455 mLastXKeyCode = 0; 4456 } 4457 4458 mLastXDirection = xDirection; 4459 4460 if (xDirection != 0 && synthesizeNewKeys) { 4461 mLastXKeyCode = xDirection > 0 4462 ? KeyEvent.KEYCODE_DPAD_RIGHT : KeyEvent.KEYCODE_DPAD_LEFT; 4463 final KeyEvent e = new KeyEvent(time, time, 4464 KeyEvent.ACTION_DOWN, mLastXKeyCode, 0, metaState, 4465 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4466 enqueueInputEvent(e); 4467 Message m = obtainMessage(MSG_ENQUEUE_X_AXIS_KEY_REPEAT, e); 4468 m.setAsynchronous(true); 4469 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4470 } 4471 } 4472 4473 if (yDirection != mLastYDirection) { 4474 if (mLastYKeyCode != 0) { 4475 removeMessages(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT); 4476 enqueueInputEvent(new KeyEvent(time, time, 4477 KeyEvent.ACTION_UP, mLastYKeyCode, 0, metaState, 4478 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4479 mLastYKeyCode = 0; 4480 } 4481 4482 mLastYDirection = yDirection; 4483 4484 if (yDirection != 0 && synthesizeNewKeys) { 4485 mLastYKeyCode = yDirection > 0 4486 ? KeyEvent.KEYCODE_DPAD_DOWN : KeyEvent.KEYCODE_DPAD_UP; 4487 final KeyEvent e = new KeyEvent(time, time, 4488 KeyEvent.ACTION_DOWN, mLastYKeyCode, 0, metaState, 4489 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4490 enqueueInputEvent(e); 4491 Message m = obtainMessage(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT, e); 4492 m.setAsynchronous(true); 4493 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4494 } 4495 } 4496 } 4497 4498 private int joystickAxisValueToDirection(float value) { 4499 if (value >= 0.5f) { 4500 return 1; 4501 } else if (value <= -0.5f) { 4502 return -1; 4503 } else { 4504 return 0; 4505 } 4506 } 4507 } 4508 4509 /** 4510 * Creates dpad events from unhandled touch navigation movements. 4511 */ 4512 final class SyntheticTouchNavigationHandler extends Handler { 4513 private static final String LOCAL_TAG = "SyntheticTouchNavigationHandler"; 4514 private static final boolean LOCAL_DEBUG = false; 4515 4516 // Assumed nominal width and height in millimeters of a touch navigation pad, 4517 // if no resolution information is available from the input system. 4518 private static final float DEFAULT_WIDTH_MILLIMETERS = 48; 4519 private static final float DEFAULT_HEIGHT_MILLIMETERS = 48; 4520 4521 /* TODO: These constants should eventually be moved to ViewConfiguration. */ 4522 4523 // The nominal distance traveled to move by one unit. 4524 private static final int TICK_DISTANCE_MILLIMETERS = 12; 4525 4526 // Minimum and maximum fling velocity in ticks per second. 4527 // The minimum velocity should be set such that we perform enough ticks per 4528 // second that the fling appears to be fluid. For example, if we set the minimum 4529 // to 2 ticks per second, then there may be up to half a second delay between the next 4530 // to last and last ticks which is noticeably discrete and jerky. This value should 4531 // probably not be set to anything less than about 4. 4532 // If fling accuracy is a problem then consider tuning the tick distance instead. 4533 private static final float MIN_FLING_VELOCITY_TICKS_PER_SECOND = 6f; 4534 private static final float MAX_FLING_VELOCITY_TICKS_PER_SECOND = 20f; 4535 4536 // Fling velocity decay factor applied after each new key is emitted. 4537 // This parameter controls the deceleration and overall duration of the fling. 4538 // The fling stops automatically when its velocity drops below the minimum 4539 // fling velocity defined above. 4540 private static final float FLING_TICK_DECAY = 0.8f; 4541 4542 /* The input device that we are tracking. */ 4543 4544 private int mCurrentDeviceId = -1; 4545 private int mCurrentSource; 4546 private boolean mCurrentDeviceSupported; 4547 4548 /* Configuration for the current input device. */ 4549 4550 // The scaled tick distance. A movement of this amount should generally translate 4551 // into a single dpad event in a given direction. 4552 private float mConfigTickDistance; 4553 4554 // The minimum and maximum scaled fling velocity. 4555 private float mConfigMinFlingVelocity; 4556 private float mConfigMaxFlingVelocity; 4557 4558 /* Tracking state. */ 4559 4560 // The velocity tracker for detecting flings. 4561 private VelocityTracker mVelocityTracker; 4562 4563 // The active pointer id, or -1 if none. 4564 private int mActivePointerId = -1; 4565 4566 // Location where tracking started. 4567 private float mStartX; 4568 private float mStartY; 4569 4570 // Most recently observed position. 4571 private float mLastX; 4572 private float mLastY; 4573 4574 // Accumulated movement delta since the last direction key was sent. 4575 private float mAccumulatedX; 4576 private float mAccumulatedY; 4577 4578 // Set to true if any movement was delivered to the app. 4579 // Implies that tap slop was exceeded. 4580 private boolean mConsumedMovement; 4581 4582 // The most recently sent key down event. 4583 // The keycode remains set until the direction changes or a fling ends 4584 // so that repeated key events may be generated as required. 4585 private long mPendingKeyDownTime; 4586 private int mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 4587 private int mPendingKeyRepeatCount; 4588 private int mPendingKeyMetaState; 4589 4590 // The current fling velocity while a fling is in progress. 4591 private boolean mFlinging; 4592 private float mFlingVelocity; 4593 4594 public SyntheticTouchNavigationHandler() { 4595 super(true); 4596 } 4597 4598 public void process(MotionEvent event) { 4599 // Update the current device information. 4600 final long time = event.getEventTime(); 4601 final int deviceId = event.getDeviceId(); 4602 final int source = event.getSource(); 4603 if (mCurrentDeviceId != deviceId || mCurrentSource != source) { 4604 finishKeys(time); 4605 finishTracking(time); 4606 mCurrentDeviceId = deviceId; 4607 mCurrentSource = source; 4608 mCurrentDeviceSupported = false; 4609 InputDevice device = event.getDevice(); 4610 if (device != null) { 4611 // In order to support an input device, we must know certain 4612 // characteristics about it, such as its size and resolution. 4613 InputDevice.MotionRange xRange = device.getMotionRange(MotionEvent.AXIS_X); 4614 InputDevice.MotionRange yRange = device.getMotionRange(MotionEvent.AXIS_Y); 4615 if (xRange != null && yRange != null) { 4616 mCurrentDeviceSupported = true; 4617 4618 // Infer the resolution if it not actually known. 4619 float xRes = xRange.getResolution(); 4620 if (xRes <= 0) { 4621 xRes = xRange.getRange() / DEFAULT_WIDTH_MILLIMETERS; 4622 } 4623 float yRes = yRange.getResolution(); 4624 if (yRes <= 0) { 4625 yRes = yRange.getRange() / DEFAULT_HEIGHT_MILLIMETERS; 4626 } 4627 float nominalRes = (xRes + yRes) * 0.5f; 4628 4629 // Precompute all of the configuration thresholds we will need. 4630 mConfigTickDistance = TICK_DISTANCE_MILLIMETERS * nominalRes; 4631 mConfigMinFlingVelocity = 4632 MIN_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 4633 mConfigMaxFlingVelocity = 4634 MAX_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 4635 4636 if (LOCAL_DEBUG) { 4637 Log.d(LOCAL_TAG, "Configured device " + mCurrentDeviceId 4638 + " (" + Integer.toHexString(mCurrentSource) + "): " 4639 + ", mConfigTickDistance=" + mConfigTickDistance 4640 + ", mConfigMinFlingVelocity=" + mConfigMinFlingVelocity 4641 + ", mConfigMaxFlingVelocity=" + mConfigMaxFlingVelocity); 4642 } 4643 } 4644 } 4645 } 4646 if (!mCurrentDeviceSupported) { 4647 return; 4648 } 4649 4650 // Handle the event. 4651 final int action = event.getActionMasked(); 4652 switch (action) { 4653 case MotionEvent.ACTION_DOWN: { 4654 boolean caughtFling = mFlinging; 4655 finishKeys(time); 4656 finishTracking(time); 4657 mActivePointerId = event.getPointerId(0); 4658 mVelocityTracker = VelocityTracker.obtain(); 4659 mVelocityTracker.addMovement(event); 4660 mStartX = event.getX(); 4661 mStartY = event.getY(); 4662 mLastX = mStartX; 4663 mLastY = mStartY; 4664 mAccumulatedX = 0; 4665 mAccumulatedY = 0; 4666 4667 // If we caught a fling, then pretend that the tap slop has already 4668 // been exceeded to suppress taps whose only purpose is to stop the fling. 4669 mConsumedMovement = caughtFling; 4670 break; 4671 } 4672 4673 case MotionEvent.ACTION_MOVE: 4674 case MotionEvent.ACTION_UP: { 4675 if (mActivePointerId < 0) { 4676 break; 4677 } 4678 final int index = event.findPointerIndex(mActivePointerId); 4679 if (index < 0) { 4680 finishKeys(time); 4681 finishTracking(time); 4682 break; 4683 } 4684 4685 mVelocityTracker.addMovement(event); 4686 final float x = event.getX(index); 4687 final float y = event.getY(index); 4688 mAccumulatedX += x - mLastX; 4689 mAccumulatedY += y - mLastY; 4690 mLastX = x; 4691 mLastY = y; 4692 4693 // Consume any accumulated movement so far. 4694 final int metaState = event.getMetaState(); 4695 consumeAccumulatedMovement(time, metaState); 4696 4697 // Detect taps and flings. 4698 if (action == MotionEvent.ACTION_UP) { 4699 if (mConsumedMovement && mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 4700 // It might be a fling. 4701 mVelocityTracker.computeCurrentVelocity(1000, mConfigMaxFlingVelocity); 4702 final float vx = mVelocityTracker.getXVelocity(mActivePointerId); 4703 final float vy = mVelocityTracker.getYVelocity(mActivePointerId); 4704 if (!startFling(time, vx, vy)) { 4705 finishKeys(time); 4706 } 4707 } 4708 finishTracking(time); 4709 } 4710 break; 4711 } 4712 4713 case MotionEvent.ACTION_CANCEL: { 4714 finishKeys(time); 4715 finishTracking(time); 4716 break; 4717 } 4718 } 4719 } 4720 4721 public void cancel(MotionEvent event) { 4722 if (mCurrentDeviceId == event.getDeviceId() 4723 && mCurrentSource == event.getSource()) { 4724 final long time = event.getEventTime(); 4725 finishKeys(time); 4726 finishTracking(time); 4727 } 4728 } 4729 4730 private void finishKeys(long time) { 4731 cancelFling(); 4732 sendKeyUp(time); 4733 } 4734 4735 private void finishTracking(long time) { 4736 if (mActivePointerId >= 0) { 4737 mActivePointerId = -1; 4738 mVelocityTracker.recycle(); 4739 mVelocityTracker = null; 4740 } 4741 } 4742 4743 private void consumeAccumulatedMovement(long time, int metaState) { 4744 final float absX = Math.abs(mAccumulatedX); 4745 final float absY = Math.abs(mAccumulatedY); 4746 if (absX >= absY) { 4747 if (absX >= mConfigTickDistance) { 4748 mAccumulatedX = consumeAccumulatedMovement(time, metaState, mAccumulatedX, 4749 KeyEvent.KEYCODE_DPAD_LEFT, KeyEvent.KEYCODE_DPAD_RIGHT); 4750 mAccumulatedY = 0; 4751 mConsumedMovement = true; 4752 } 4753 } else { 4754 if (absY >= mConfigTickDistance) { 4755 mAccumulatedY = consumeAccumulatedMovement(time, metaState, mAccumulatedY, 4756 KeyEvent.KEYCODE_DPAD_UP, KeyEvent.KEYCODE_DPAD_DOWN); 4757 mAccumulatedX = 0; 4758 mConsumedMovement = true; 4759 } 4760 } 4761 } 4762 4763 private float consumeAccumulatedMovement(long time, int metaState, 4764 float accumulator, int negativeKeyCode, int positiveKeyCode) { 4765 while (accumulator <= -mConfigTickDistance) { 4766 sendKeyDownOrRepeat(time, negativeKeyCode, metaState); 4767 accumulator += mConfigTickDistance; 4768 } 4769 while (accumulator >= mConfigTickDistance) { 4770 sendKeyDownOrRepeat(time, positiveKeyCode, metaState); 4771 accumulator -= mConfigTickDistance; 4772 } 4773 return accumulator; 4774 } 4775 4776 private void sendKeyDownOrRepeat(long time, int keyCode, int metaState) { 4777 if (mPendingKeyCode != keyCode) { 4778 sendKeyUp(time); 4779 mPendingKeyDownTime = time; 4780 mPendingKeyCode = keyCode; 4781 mPendingKeyRepeatCount = 0; 4782 } else { 4783 mPendingKeyRepeatCount += 1; 4784 } 4785 mPendingKeyMetaState = metaState; 4786 4787 // Note: Normally we would pass FLAG_LONG_PRESS when the repeat count is 1 4788 // but it doesn't quite make sense when simulating the events in this way. 4789 if (LOCAL_DEBUG) { 4790 Log.d(LOCAL_TAG, "Sending key down: keyCode=" + mPendingKeyCode 4791 + ", repeatCount=" + mPendingKeyRepeatCount 4792 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 4793 } 4794 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 4795 KeyEvent.ACTION_DOWN, mPendingKeyCode, mPendingKeyRepeatCount, 4796 mPendingKeyMetaState, mCurrentDeviceId, 4797 KeyEvent.FLAG_FALLBACK, mCurrentSource)); 4798 } 4799 4800 private void sendKeyUp(long time) { 4801 if (mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 4802 if (LOCAL_DEBUG) { 4803 Log.d(LOCAL_TAG, "Sending key up: keyCode=" + mPendingKeyCode 4804 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 4805 } 4806 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 4807 KeyEvent.ACTION_UP, mPendingKeyCode, 0, mPendingKeyMetaState, 4808 mCurrentDeviceId, 0, KeyEvent.FLAG_FALLBACK, 4809 mCurrentSource)); 4810 mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 4811 } 4812 } 4813 4814 private boolean startFling(long time, float vx, float vy) { 4815 if (LOCAL_DEBUG) { 4816 Log.d(LOCAL_TAG, "Considering fling: vx=" + vx + ", vy=" + vy 4817 + ", min=" + mConfigMinFlingVelocity); 4818 } 4819 4820 // Flings must be oriented in the same direction as the preceding movements. 4821 switch (mPendingKeyCode) { 4822 case KeyEvent.KEYCODE_DPAD_LEFT: 4823 if (-vx >= mConfigMinFlingVelocity 4824 && Math.abs(vy) < mConfigMinFlingVelocity) { 4825 mFlingVelocity = -vx; 4826 break; 4827 } 4828 return false; 4829 4830 case KeyEvent.KEYCODE_DPAD_RIGHT: 4831 if (vx >= mConfigMinFlingVelocity 4832 && Math.abs(vy) < mConfigMinFlingVelocity) { 4833 mFlingVelocity = vx; 4834 break; 4835 } 4836 return false; 4837 4838 case KeyEvent.KEYCODE_DPAD_UP: 4839 if (-vy >= mConfigMinFlingVelocity 4840 && Math.abs(vx) < mConfigMinFlingVelocity) { 4841 mFlingVelocity = -vy; 4842 break; 4843 } 4844 return false; 4845 4846 case KeyEvent.KEYCODE_DPAD_DOWN: 4847 if (vy >= mConfigMinFlingVelocity 4848 && Math.abs(vx) < mConfigMinFlingVelocity) { 4849 mFlingVelocity = vy; 4850 break; 4851 } 4852 return false; 4853 } 4854 4855 // Post the first fling event. 4856 mFlinging = postFling(time); 4857 return mFlinging; 4858 } 4859 4860 private boolean postFling(long time) { 4861 // The idea here is to estimate the time when the pointer would have 4862 // traveled one tick distance unit given the current fling velocity. 4863 // This effect creates continuity of motion. 4864 if (mFlingVelocity >= mConfigMinFlingVelocity) { 4865 long delay = (long)(mConfigTickDistance / mFlingVelocity * 1000); 4866 postAtTime(mFlingRunnable, time + delay); 4867 if (LOCAL_DEBUG) { 4868 Log.d(LOCAL_TAG, "Posted fling: velocity=" 4869 + mFlingVelocity + ", delay=" + delay 4870 + ", keyCode=" + mPendingKeyCode); 4871 } 4872 return true; 4873 } 4874 return false; 4875 } 4876 4877 private void cancelFling() { 4878 if (mFlinging) { 4879 removeCallbacks(mFlingRunnable); 4880 mFlinging = false; 4881 } 4882 } 4883 4884 private final Runnable mFlingRunnable = new Runnable() { 4885 @Override 4886 public void run() { 4887 final long time = SystemClock.uptimeMillis(); 4888 sendKeyDownOrRepeat(time, mPendingKeyCode, mPendingKeyMetaState); 4889 mFlingVelocity *= FLING_TICK_DECAY; 4890 if (!postFling(time)) { 4891 mFlinging = false; 4892 finishKeys(time); 4893 } 4894 } 4895 }; 4896 } 4897 4898 final class SyntheticKeyboardHandler { 4899 public void process(KeyEvent event) { 4900 if ((event.getFlags() & KeyEvent.FLAG_FALLBACK) != 0) { 4901 return; 4902 } 4903 4904 final KeyCharacterMap kcm = event.getKeyCharacterMap(); 4905 final int keyCode = event.getKeyCode(); 4906 final int metaState = event.getMetaState(); 4907 4908 // Check for fallback actions specified by the key character map. 4909 KeyCharacterMap.FallbackAction fallbackAction = 4910 kcm.getFallbackAction(keyCode, metaState); 4911 if (fallbackAction != null) { 4912 final int flags = event.getFlags() | KeyEvent.FLAG_FALLBACK; 4913 KeyEvent fallbackEvent = KeyEvent.obtain( 4914 event.getDownTime(), event.getEventTime(), 4915 event.getAction(), fallbackAction.keyCode, 4916 event.getRepeatCount(), fallbackAction.metaState, 4917 event.getDeviceId(), event.getScanCode(), 4918 flags, event.getSource(), null); 4919 fallbackAction.recycle(); 4920 enqueueInputEvent(fallbackEvent); 4921 } 4922 } 4923 } 4924 4925 /** 4926 * Returns true if the key is used for keyboard navigation. 4927 * @param keyEvent The key event. 4928 * @return True if the key is used for keyboard navigation. 4929 */ 4930 private static boolean isNavigationKey(KeyEvent keyEvent) { 4931 switch (keyEvent.getKeyCode()) { 4932 case KeyEvent.KEYCODE_DPAD_LEFT: 4933 case KeyEvent.KEYCODE_DPAD_RIGHT: 4934 case KeyEvent.KEYCODE_DPAD_UP: 4935 case KeyEvent.KEYCODE_DPAD_DOWN: 4936 case KeyEvent.KEYCODE_DPAD_CENTER: 4937 case KeyEvent.KEYCODE_PAGE_UP: 4938 case KeyEvent.KEYCODE_PAGE_DOWN: 4939 case KeyEvent.KEYCODE_MOVE_HOME: 4940 case KeyEvent.KEYCODE_MOVE_END: 4941 case KeyEvent.KEYCODE_TAB: 4942 case KeyEvent.KEYCODE_SPACE: 4943 case KeyEvent.KEYCODE_ENTER: 4944 return true; 4945 } 4946 return false; 4947 } 4948 4949 /** 4950 * Returns true if the key is used for typing. 4951 * @param keyEvent The key event. 4952 * @return True if the key is used for typing. 4953 */ 4954 private static boolean isTypingKey(KeyEvent keyEvent) { 4955 return keyEvent.getUnicodeChar() > 0; 4956 } 4957 4958 /** 4959 * See if the key event means we should leave touch mode (and leave touch mode if so). 4960 * @param event The key event. 4961 * @return Whether this key event should be consumed (meaning the act of 4962 * leaving touch mode alone is considered the event). 4963 */ 4964 private boolean checkForLeavingTouchModeAndConsume(KeyEvent event) { 4965 // Only relevant in touch mode. 4966 if (!mAttachInfo.mInTouchMode) { 4967 return false; 4968 } 4969 4970 // Only consider leaving touch mode on DOWN or MULTIPLE actions, never on UP. 4971 final int action = event.getAction(); 4972 if (action != KeyEvent.ACTION_DOWN && action != KeyEvent.ACTION_MULTIPLE) { 4973 return false; 4974 } 4975 4976 // Don't leave touch mode if the IME told us not to. 4977 if ((event.getFlags() & KeyEvent.FLAG_KEEP_TOUCH_MODE) != 0) { 4978 return false; 4979 } 4980 4981 // If the key can be used for keyboard navigation then leave touch mode 4982 // and select a focused view if needed (in ensureTouchMode). 4983 // When a new focused view is selected, we consume the navigation key because 4984 // navigation doesn't make much sense unless a view already has focus so 4985 // the key's purpose is to set focus. 4986 if (isNavigationKey(event)) { 4987 return ensureTouchMode(false); 4988 } 4989 4990 // If the key can be used for typing then leave touch mode 4991 // and select a focused view if needed (in ensureTouchMode). 4992 // Always allow the view to process the typing key. 4993 if (isTypingKey(event)) { 4994 ensureTouchMode(false); 4995 return false; 4996 } 4997 4998 return false; 4999 } 5000 5001 /* drag/drop */ 5002 void setLocalDragState(Object obj) { 5003 mLocalDragState = obj; 5004 } 5005 5006 private void handleDragEvent(DragEvent event) { 5007 // From the root, only drag start/end/location are dispatched. entered/exited 5008 // are determined and dispatched by the viewgroup hierarchy, who then report 5009 // that back here for ultimate reporting back to the framework. 5010 if (mView != null && mAdded) { 5011 final int what = event.mAction; 5012 5013 if (what == DragEvent.ACTION_DRAG_EXITED) { 5014 // A direct EXITED event means that the window manager knows we've just crossed 5015 // a window boundary, so the current drag target within this one must have 5016 // just been exited. Send it the usual notifications and then we're done 5017 // for now. 5018 mView.dispatchDragEvent(event); 5019 } else { 5020 // Cache the drag description when the operation starts, then fill it in 5021 // on subsequent calls as a convenience 5022 if (what == DragEvent.ACTION_DRAG_STARTED) { 5023 mCurrentDragView = null; // Start the current-recipient tracking 5024 mDragDescription = event.mClipDescription; 5025 } else { 5026 event.mClipDescription = mDragDescription; 5027 } 5028 5029 // For events with a [screen] location, translate into window coordinates 5030 if ((what == DragEvent.ACTION_DRAG_LOCATION) || (what == DragEvent.ACTION_DROP)) { 5031 mDragPoint.set(event.mX, event.mY); 5032 if (mTranslator != null) { 5033 mTranslator.translatePointInScreenToAppWindow(mDragPoint); 5034 } 5035 5036 if (mCurScrollY != 0) { 5037 mDragPoint.offset(0, mCurScrollY); 5038 } 5039 5040 event.mX = mDragPoint.x; 5041 event.mY = mDragPoint.y; 5042 } 5043 5044 // Remember who the current drag target is pre-dispatch 5045 final View prevDragView = mCurrentDragView; 5046 5047 // Now dispatch the drag/drop event 5048 boolean result = mView.dispatchDragEvent(event); 5049 5050 // If we changed apparent drag target, tell the OS about it 5051 if (prevDragView != mCurrentDragView) { 5052 try { 5053 if (prevDragView != null) { 5054 mWindowSession.dragRecipientExited(mWindow); 5055 } 5056 if (mCurrentDragView != null) { 5057 mWindowSession.dragRecipientEntered(mWindow); 5058 } 5059 } catch (RemoteException e) { 5060 Slog.e(TAG, "Unable to note drag target change"); 5061 } 5062 } 5063 5064 // Report the drop result when we're done 5065 if (what == DragEvent.ACTION_DROP) { 5066 mDragDescription = null; 5067 try { 5068 Log.i(TAG, "Reporting drop result: " + result); 5069 mWindowSession.reportDropResult(mWindow, result); 5070 } catch (RemoteException e) { 5071 Log.e(TAG, "Unable to report drop result"); 5072 } 5073 } 5074 5075 // When the drag operation ends, release any local state object 5076 // that may have been in use 5077 if (what == DragEvent.ACTION_DRAG_ENDED) { 5078 setLocalDragState(null); 5079 } 5080 } 5081 } 5082 event.recycle(); 5083 } 5084 5085 public void handleDispatchSystemUiVisibilityChanged(SystemUiVisibilityInfo args) { 5086 if (mSeq != args.seq) { 5087 // The sequence has changed, so we need to update our value and make 5088 // sure to do a traversal afterward so the window manager is given our 5089 // most recent data. 5090 mSeq = args.seq; 5091 mAttachInfo.mForceReportNewAttributes = true; 5092 scheduleTraversals(); 5093 } 5094 if (mView == null) return; 5095 if (args.localChanges != 0) { 5096 mView.updateLocalSystemUiVisibility(args.localValue, args.localChanges); 5097 } 5098 if (mAttachInfo != null) { 5099 int visibility = args.globalVisibility&View.SYSTEM_UI_CLEARABLE_FLAGS; 5100 if (visibility != mAttachInfo.mGlobalSystemUiVisibility) { 5101 mAttachInfo.mGlobalSystemUiVisibility = visibility; 5102 mView.dispatchSystemUiVisibilityChanged(visibility); 5103 } 5104 } 5105 } 5106 5107 public void handleDispatchDoneAnimating() { 5108 if (mWindowsAnimating) { 5109 mWindowsAnimating = false; 5110 if (!mDirty.isEmpty() || mIsAnimating || mFullRedrawNeeded) { 5111 scheduleTraversals(); 5112 } 5113 } 5114 } 5115 5116 public void getLastTouchPoint(Point outLocation) { 5117 outLocation.x = (int) mLastTouchPoint.x; 5118 outLocation.y = (int) mLastTouchPoint.y; 5119 } 5120 5121 public void setDragFocus(View newDragTarget) { 5122 if (mCurrentDragView != newDragTarget) { 5123 mCurrentDragView = newDragTarget; 5124 } 5125 } 5126 5127 private AudioManager getAudioManager() { 5128 if (mView == null) { 5129 throw new IllegalStateException("getAudioManager called when there is no mView"); 5130 } 5131 if (mAudioManager == null) { 5132 mAudioManager = (AudioManager) mView.getContext().getSystemService(Context.AUDIO_SERVICE); 5133 } 5134 return mAudioManager; 5135 } 5136 5137 public AccessibilityInteractionController getAccessibilityInteractionController() { 5138 if (mView == null) { 5139 throw new IllegalStateException("getAccessibilityInteractionController" 5140 + " called when there is no mView"); 5141 } 5142 if (mAccessibilityInteractionController == null) { 5143 mAccessibilityInteractionController = new AccessibilityInteractionController(this); 5144 } 5145 return mAccessibilityInteractionController; 5146 } 5147 5148 private int relayoutWindow(WindowManager.LayoutParams params, int viewVisibility, 5149 boolean insetsPending) throws RemoteException { 5150 5151 float appScale = mAttachInfo.mApplicationScale; 5152 boolean restore = false; 5153 if (params != null && mTranslator != null) { 5154 restore = true; 5155 params.backup(); 5156 mTranslator.translateWindowLayout(params); 5157 } 5158 if (params != null) { 5159 if (DBG) Log.d(TAG, "WindowLayout in layoutWindow:" + params); 5160 } 5161 mPendingConfiguration.seq = 0; 5162 //Log.d(TAG, ">>>>>> CALLING relayout"); 5163 if (params != null && mOrigWindowType != params.type) { 5164 // For compatibility with old apps, don't crash here. 5165 if (mTargetSdkVersion < android.os.Build.VERSION_CODES.ICE_CREAM_SANDWICH) { 5166 Slog.w(TAG, "Window type can not be changed after " 5167 + "the window is added; ignoring change of " + mView); 5168 params.type = mOrigWindowType; 5169 } 5170 } 5171 int relayoutResult = mWindowSession.relayout( 5172 mWindow, mSeq, params, 5173 (int) (mView.getMeasuredWidth() * appScale + 0.5f), 5174 (int) (mView.getMeasuredHeight() * appScale + 0.5f), 5175 viewVisibility, insetsPending ? WindowManagerGlobal.RELAYOUT_INSETS_PENDING : 0, 5176 mWinFrame, mPendingOverscanInsets, mPendingContentInsets, mPendingVisibleInsets, 5177 mPendingConfiguration, mSurface); 5178 //Log.d(TAG, "<<<<<< BACK FROM relayout"); 5179 if (restore) { 5180 params.restore(); 5181 } 5182 5183 if (mTranslator != null) { 5184 mTranslator.translateRectInScreenToAppWinFrame(mWinFrame); 5185 mTranslator.translateRectInScreenToAppWindow(mPendingOverscanInsets); 5186 mTranslator.translateRectInScreenToAppWindow(mPendingContentInsets); 5187 mTranslator.translateRectInScreenToAppWindow(mPendingVisibleInsets); 5188 } 5189 return relayoutResult; 5190 } 5191 5192 /** 5193 * {@inheritDoc} 5194 */ 5195 @Override 5196 public void playSoundEffect(int effectId) { 5197 checkThread(); 5198 5199 if (mMediaDisabled) { 5200 return; 5201 } 5202 5203 try { 5204 final AudioManager audioManager = getAudioManager(); 5205 5206 switch (effectId) { 5207 case SoundEffectConstants.CLICK: 5208 audioManager.playSoundEffect(AudioManager.FX_KEY_CLICK); 5209 return; 5210 case SoundEffectConstants.NAVIGATION_DOWN: 5211 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_DOWN); 5212 return; 5213 case SoundEffectConstants.NAVIGATION_LEFT: 5214 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_LEFT); 5215 return; 5216 case SoundEffectConstants.NAVIGATION_RIGHT: 5217 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_RIGHT); 5218 return; 5219 case SoundEffectConstants.NAVIGATION_UP: 5220 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_UP); 5221 return; 5222 default: 5223 throw new IllegalArgumentException("unknown effect id " + effectId + 5224 " not defined in " + SoundEffectConstants.class.getCanonicalName()); 5225 } 5226 } catch (IllegalStateException e) { 5227 // Exception thrown by getAudioManager() when mView is null 5228 Log.e(TAG, "FATAL EXCEPTION when attempting to play sound effect: " + e); 5229 e.printStackTrace(); 5230 } 5231 } 5232 5233 /** 5234 * {@inheritDoc} 5235 */ 5236 @Override 5237 public boolean performHapticFeedback(int effectId, boolean always) { 5238 try { 5239 return mWindowSession.performHapticFeedback(mWindow, effectId, always); 5240 } catch (RemoteException e) { 5241 return false; 5242 } 5243 } 5244 5245 /** 5246 * {@inheritDoc} 5247 */ 5248 @Override 5249 public View focusSearch(View focused, int direction) { 5250 checkThread(); 5251 if (!(mView instanceof ViewGroup)) { 5252 return null; 5253 } 5254 return FocusFinder.getInstance().findNextFocus((ViewGroup) mView, focused, direction); 5255 } 5256 5257 public void debug() { 5258 mView.debug(); 5259 } 5260 5261 public void dump(String prefix, FileDescriptor fd, PrintWriter writer, String[] args) { 5262 String innerPrefix = prefix + " "; 5263 writer.print(prefix); writer.println("ViewRoot:"); 5264 writer.print(innerPrefix); writer.print("mAdded="); writer.print(mAdded); 5265 writer.print(" mRemoved="); writer.println(mRemoved); 5266 writer.print(innerPrefix); writer.print("mConsumeBatchedInputScheduled="); 5267 writer.println(mConsumeBatchedInputScheduled); 5268 writer.print(innerPrefix); writer.print("mPendingInputEventCount="); 5269 writer.println(mPendingInputEventCount); 5270 writer.print(innerPrefix); writer.print("mProcessInputEventsScheduled="); 5271 writer.println(mProcessInputEventsScheduled); 5272 writer.print(innerPrefix); writer.print("mTraversalScheduled="); 5273 writer.print(mTraversalScheduled); 5274 if (mTraversalScheduled) { 5275 writer.print(" (barrier="); writer.print(mTraversalBarrier); writer.println(")"); 5276 } else { 5277 writer.println(); 5278 } 5279 mFirstInputStage.dump(innerPrefix, writer); 5280 5281 mChoreographer.dump(prefix, writer); 5282 5283 writer.print(prefix); writer.println("View Hierarchy:"); 5284 dumpViewHierarchy(innerPrefix, writer, mView); 5285 } 5286 5287 private void dumpViewHierarchy(String prefix, PrintWriter writer, View view) { 5288 writer.print(prefix); 5289 if (view == null) { 5290 writer.println("null"); 5291 return; 5292 } 5293 writer.println(view.toString()); 5294 if (!(view instanceof ViewGroup)) { 5295 return; 5296 } 5297 ViewGroup grp = (ViewGroup)view; 5298 final int N = grp.getChildCount(); 5299 if (N <= 0) { 5300 return; 5301 } 5302 prefix = prefix + " "; 5303 for (int i=0; i<N; i++) { 5304 dumpViewHierarchy(prefix, writer, grp.getChildAt(i)); 5305 } 5306 } 5307 5308 public void dumpGfxInfo(int[] info) { 5309 info[0] = info[1] = 0; 5310 if (mView != null) { 5311 getGfxInfo(mView, info); 5312 } 5313 } 5314 5315 private static void getGfxInfo(View view, int[] info) { 5316 RenderNode renderNode = view.mRenderNode; 5317 info[0]++; 5318 if (renderNode != null) { 5319 info[1] += 0; /* TODO: Memory used by RenderNodes (properties + DisplayLists) */ 5320 } 5321 5322 if (view instanceof ViewGroup) { 5323 ViewGroup group = (ViewGroup) view; 5324 5325 int count = group.getChildCount(); 5326 for (int i = 0; i < count; i++) { 5327 getGfxInfo(group.getChildAt(i), info); 5328 } 5329 } 5330 } 5331 5332 /** 5333 * @param immediate True, do now if not in traversal. False, put on queue and do later. 5334 * @return True, request has been queued. False, request has been completed. 5335 */ 5336 boolean die(boolean immediate) { 5337 // Make sure we do execute immediately if we are in the middle of a traversal or the damage 5338 // done by dispatchDetachedFromWindow will cause havoc on return. 5339 if (immediate && !mIsInTraversal) { 5340 doDie(); 5341 return false; 5342 } 5343 5344 if (!mIsDrawing) { 5345 destroyHardwareRenderer(); 5346 } else { 5347 Log.e(TAG, "Attempting to destroy the window while drawing!\n" + 5348 " window=" + this + ", title=" + mWindowAttributes.getTitle()); 5349 } 5350 mHandler.sendEmptyMessage(MSG_DIE); 5351 return true; 5352 } 5353 5354 void doDie() { 5355 checkThread(); 5356 if (LOCAL_LOGV) Log.v(TAG, "DIE in " + this + " of " + mSurface); 5357 synchronized (this) { 5358 if (mRemoved) { 5359 return; 5360 } 5361 mRemoved = true; 5362 if (mAdded) { 5363 dispatchDetachedFromWindow(); 5364 } 5365 5366 if (mAdded && !mFirst) { 5367 destroyHardwareRenderer(); 5368 5369 if (mView != null) { 5370 int viewVisibility = mView.getVisibility(); 5371 boolean viewVisibilityChanged = mViewVisibility != viewVisibility; 5372 if (mWindowAttributesChanged || viewVisibilityChanged) { 5373 // If layout params have been changed, first give them 5374 // to the window manager to make sure it has the correct 5375 // animation info. 5376 try { 5377 if ((relayoutWindow(mWindowAttributes, viewVisibility, false) 5378 & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 5379 mWindowSession.finishDrawing(mWindow); 5380 } 5381 } catch (RemoteException e) { 5382 } 5383 } 5384 5385 mSurface.release(); 5386 } 5387 } 5388 5389 mAdded = false; 5390 } 5391 WindowManagerGlobal.getInstance().doRemoveView(this); 5392 } 5393 5394 public void requestUpdateConfiguration(Configuration config) { 5395 Message msg = mHandler.obtainMessage(MSG_UPDATE_CONFIGURATION, config); 5396 mHandler.sendMessage(msg); 5397 } 5398 5399 public void loadSystemProperties() { 5400 mHandler.post(new Runnable() { 5401 @Override 5402 public void run() { 5403 // Profiling 5404 mProfileRendering = SystemProperties.getBoolean(PROPERTY_PROFILE_RENDERING, false); 5405 profileRendering(mAttachInfo.mHasWindowFocus); 5406 5407 // Media (used by sound effects) 5408 mMediaDisabled = SystemProperties.getBoolean(PROPERTY_MEDIA_DISABLED, false); 5409 5410 // Hardware rendering 5411 if (mAttachInfo.mHardwareRenderer != null) { 5412 if (mAttachInfo.mHardwareRenderer.loadSystemProperties()) { 5413 invalidate(); 5414 } 5415 } 5416 5417 // Layout debugging 5418 boolean layout = SystemProperties.getBoolean(View.DEBUG_LAYOUT_PROPERTY, false); 5419 if (layout != mAttachInfo.mDebugLayout) { 5420 mAttachInfo.mDebugLayout = layout; 5421 if (!mHandler.hasMessages(MSG_INVALIDATE_WORLD)) { 5422 mHandler.sendEmptyMessageDelayed(MSG_INVALIDATE_WORLD, 200); 5423 } 5424 } 5425 } 5426 }); 5427 } 5428 5429 private void destroyHardwareRenderer() { 5430 AttachInfo attachInfo = mAttachInfo; 5431 HardwareRenderer hardwareRenderer = attachInfo.mHardwareRenderer; 5432 5433 if (hardwareRenderer != null) { 5434 if (mView != null) { 5435 hardwareRenderer.destroyHardwareResources(mView); 5436 } 5437 hardwareRenderer.destroy(true); 5438 hardwareRenderer.setRequested(false); 5439 5440 attachInfo.mHardwareRenderer = null; 5441 attachInfo.mHardwareAccelerated = false; 5442 } 5443 } 5444 5445 public void dispatchFinishInputConnection(InputConnection connection) { 5446 Message msg = mHandler.obtainMessage(MSG_FINISH_INPUT_CONNECTION, connection); 5447 mHandler.sendMessage(msg); 5448 } 5449 5450 public void dispatchResized(Rect frame, Rect overscanInsets, Rect contentInsets, 5451 Rect visibleInsets, boolean reportDraw, Configuration newConfig) { 5452 if (DEBUG_LAYOUT) Log.v(TAG, "Resizing " + this + ": frame=" + frame.toShortString() 5453 + " contentInsets=" + contentInsets.toShortString() 5454 + " visibleInsets=" + visibleInsets.toShortString() 5455 + " reportDraw=" + reportDraw); 5456 Message msg = mHandler.obtainMessage(reportDraw ? MSG_RESIZED_REPORT : MSG_RESIZED); 5457 if (mTranslator != null) { 5458 mTranslator.translateRectInScreenToAppWindow(frame); 5459 mTranslator.translateRectInScreenToAppWindow(overscanInsets); 5460 mTranslator.translateRectInScreenToAppWindow(contentInsets); 5461 mTranslator.translateRectInScreenToAppWindow(visibleInsets); 5462 } 5463 SomeArgs args = SomeArgs.obtain(); 5464 final boolean sameProcessCall = (Binder.getCallingPid() == android.os.Process.myPid()); 5465 args.arg1 = sameProcessCall ? new Rect(frame) : frame; 5466 args.arg2 = sameProcessCall ? new Rect(contentInsets) : contentInsets; 5467 args.arg3 = sameProcessCall ? new Rect(visibleInsets) : visibleInsets; 5468 args.arg4 = sameProcessCall && newConfig != null ? new Configuration(newConfig) : newConfig; 5469 args.arg5 = sameProcessCall ? new Rect(overscanInsets) : overscanInsets; 5470 msg.obj = args; 5471 mHandler.sendMessage(msg); 5472 } 5473 5474 public void dispatchMoved(int newX, int newY) { 5475 if (DEBUG_LAYOUT) Log.v(TAG, "Window moved " + this + ": newX=" + newX + " newY=" + newY); 5476 if (mTranslator != null) { 5477 PointF point = new PointF(newX, newY); 5478 mTranslator.translatePointInScreenToAppWindow(point); 5479 newX = (int) (point.x + 0.5); 5480 newY = (int) (point.y + 0.5); 5481 } 5482 Message msg = mHandler.obtainMessage(MSG_WINDOW_MOVED, newX, newY); 5483 mHandler.sendMessage(msg); 5484 } 5485 5486 /** 5487 * Represents a pending input event that is waiting in a queue. 5488 * 5489 * Input events are processed in serial order by the timestamp specified by 5490 * {@link InputEvent#getEventTimeNano()}. In general, the input dispatcher delivers 5491 * one input event to the application at a time and waits for the application 5492 * to finish handling it before delivering the next one. 5493 * 5494 * However, because the application or IME can synthesize and inject multiple 5495 * key events at a time without going through the input dispatcher, we end up 5496 * needing a queue on the application's side. 5497 */ 5498 private static final class QueuedInputEvent { 5499 public static final int FLAG_DELIVER_POST_IME = 1 << 0; 5500 public static final int FLAG_DEFERRED = 1 << 1; 5501 public static final int FLAG_FINISHED = 1 << 2; 5502 public static final int FLAG_FINISHED_HANDLED = 1 << 3; 5503 public static final int FLAG_RESYNTHESIZED = 1 << 4; 5504 public static final int FLAG_UNHANDLED = 1 << 5; 5505 5506 public QueuedInputEvent mNext; 5507 5508 public InputEvent mEvent; 5509 public InputEventReceiver mReceiver; 5510 public int mFlags; 5511 5512 public boolean shouldSkipIme() { 5513 if ((mFlags & FLAG_DELIVER_POST_IME) != 0) { 5514 return true; 5515 } 5516 return mEvent instanceof MotionEvent 5517 && mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER); 5518 } 5519 5520 public boolean shouldSendToSynthesizer() { 5521 if ((mFlags & FLAG_UNHANDLED) != 0) { 5522 return true; 5523 } 5524 5525 return false; 5526 } 5527 5528 @Override 5529 public String toString() { 5530 StringBuilder sb = new StringBuilder("QueuedInputEvent{flags="); 5531 boolean hasPrevious = false; 5532 hasPrevious = flagToString("DELIVER_POST_IME", FLAG_DELIVER_POST_IME, hasPrevious, sb); 5533 hasPrevious = flagToString("DEFERRED", FLAG_DEFERRED, hasPrevious, sb); 5534 hasPrevious = flagToString("FINISHED", FLAG_FINISHED, hasPrevious, sb); 5535 hasPrevious = flagToString("FINISHED_HANDLED", FLAG_FINISHED_HANDLED, hasPrevious, sb); 5536 hasPrevious = flagToString("RESYNTHESIZED", FLAG_RESYNTHESIZED, hasPrevious, sb); 5537 hasPrevious = flagToString("UNHANDLED", FLAG_UNHANDLED, hasPrevious, sb); 5538 if (!hasPrevious) { 5539 sb.append("0"); 5540 } 5541 sb.append(", hasNextQueuedEvent=" + (mEvent != null ? "true" : "false")); 5542 sb.append(", hasInputEventReceiver=" + (mReceiver != null ? "true" : "false")); 5543 sb.append(", mEvent=" + mEvent + "}"); 5544 return sb.toString(); 5545 } 5546 5547 private boolean flagToString(String name, int flag, 5548 boolean hasPrevious, StringBuilder sb) { 5549 if ((mFlags & flag) != 0) { 5550 if (hasPrevious) { 5551 sb.append("|"); 5552 } 5553 sb.append(name); 5554 return true; 5555 } 5556 return hasPrevious; 5557 } 5558 } 5559 5560 private QueuedInputEvent obtainQueuedInputEvent(InputEvent event, 5561 InputEventReceiver receiver, int flags) { 5562 QueuedInputEvent q = mQueuedInputEventPool; 5563 if (q != null) { 5564 mQueuedInputEventPoolSize -= 1; 5565 mQueuedInputEventPool = q.mNext; 5566 q.mNext = null; 5567 } else { 5568 q = new QueuedInputEvent(); 5569 } 5570 5571 q.mEvent = event; 5572 q.mReceiver = receiver; 5573 q.mFlags = flags; 5574 return q; 5575 } 5576 5577 private void recycleQueuedInputEvent(QueuedInputEvent q) { 5578 q.mEvent = null; 5579 q.mReceiver = null; 5580 5581 if (mQueuedInputEventPoolSize < MAX_QUEUED_INPUT_EVENT_POOL_SIZE) { 5582 mQueuedInputEventPoolSize += 1; 5583 q.mNext = mQueuedInputEventPool; 5584 mQueuedInputEventPool = q; 5585 } 5586 } 5587 5588 void enqueueInputEvent(InputEvent event) { 5589 enqueueInputEvent(event, null, 0, false); 5590 } 5591 5592 void enqueueInputEvent(InputEvent event, 5593 InputEventReceiver receiver, int flags, boolean processImmediately) { 5594 QueuedInputEvent q = obtainQueuedInputEvent(event, receiver, flags); 5595 5596 // Always enqueue the input event in order, regardless of its time stamp. 5597 // We do this because the application or the IME may inject key events 5598 // in response to touch events and we want to ensure that the injected keys 5599 // are processed in the order they were received and we cannot trust that 5600 // the time stamp of injected events are monotonic. 5601 QueuedInputEvent last = mPendingInputEventTail; 5602 if (last == null) { 5603 mPendingInputEventHead = q; 5604 mPendingInputEventTail = q; 5605 } else { 5606 last.mNext = q; 5607 mPendingInputEventTail = q; 5608 } 5609 mPendingInputEventCount += 1; 5610 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 5611 mPendingInputEventCount); 5612 5613 if (processImmediately) { 5614 doProcessInputEvents(); 5615 } else { 5616 scheduleProcessInputEvents(); 5617 } 5618 } 5619 5620 private void scheduleProcessInputEvents() { 5621 if (!mProcessInputEventsScheduled) { 5622 mProcessInputEventsScheduled = true; 5623 Message msg = mHandler.obtainMessage(MSG_PROCESS_INPUT_EVENTS); 5624 msg.setAsynchronous(true); 5625 mHandler.sendMessage(msg); 5626 } 5627 } 5628 5629 void doProcessInputEvents() { 5630 // Deliver all pending input events in the queue. 5631 while (mPendingInputEventHead != null) { 5632 QueuedInputEvent q = mPendingInputEventHead; 5633 mPendingInputEventHead = q.mNext; 5634 if (mPendingInputEventHead == null) { 5635 mPendingInputEventTail = null; 5636 } 5637 q.mNext = null; 5638 5639 mPendingInputEventCount -= 1; 5640 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 5641 mPendingInputEventCount); 5642 5643 deliverInputEvent(q); 5644 } 5645 5646 // We are done processing all input events that we can process right now 5647 // so we can clear the pending flag immediately. 5648 if (mProcessInputEventsScheduled) { 5649 mProcessInputEventsScheduled = false; 5650 mHandler.removeMessages(MSG_PROCESS_INPUT_EVENTS); 5651 } 5652 } 5653 5654 private void deliverInputEvent(QueuedInputEvent q) { 5655 Trace.asyncTraceBegin(Trace.TRACE_TAG_VIEW, "deliverInputEvent", 5656 q.mEvent.getSequenceNumber()); 5657 if (mInputEventConsistencyVerifier != null) { 5658 mInputEventConsistencyVerifier.onInputEvent(q.mEvent, 0); 5659 } 5660 5661 InputStage stage; 5662 if (q.shouldSendToSynthesizer()) { 5663 stage = mSyntheticInputStage; 5664 } else { 5665 stage = q.shouldSkipIme() ? mFirstPostImeInputStage : mFirstInputStage; 5666 } 5667 5668 if (stage != null) { 5669 stage.deliver(q); 5670 } else { 5671 finishInputEvent(q); 5672 } 5673 } 5674 5675 private void finishInputEvent(QueuedInputEvent q) { 5676 Trace.asyncTraceEnd(Trace.TRACE_TAG_VIEW, "deliverInputEvent", 5677 q.mEvent.getSequenceNumber()); 5678 if (q.mReceiver != null) { 5679 boolean handled = (q.mFlags & QueuedInputEvent.FLAG_FINISHED_HANDLED) != 0; 5680 q.mReceiver.finishInputEvent(q.mEvent, handled); 5681 } else { 5682 q.mEvent.recycleIfNeededAfterDispatch(); 5683 } 5684 5685 recycleQueuedInputEvent(q); 5686 } 5687 5688 static boolean isTerminalInputEvent(InputEvent event) { 5689 if (event instanceof KeyEvent) { 5690 final KeyEvent keyEvent = (KeyEvent)event; 5691 return keyEvent.getAction() == KeyEvent.ACTION_UP; 5692 } else { 5693 final MotionEvent motionEvent = (MotionEvent)event; 5694 final int action = motionEvent.getAction(); 5695 return action == MotionEvent.ACTION_UP 5696 || action == MotionEvent.ACTION_CANCEL 5697 || action == MotionEvent.ACTION_HOVER_EXIT; 5698 } 5699 } 5700 5701 void scheduleConsumeBatchedInput() { 5702 if (!mConsumeBatchedInputScheduled) { 5703 mConsumeBatchedInputScheduled = true; 5704 mChoreographer.postCallback(Choreographer.CALLBACK_INPUT, 5705 mConsumedBatchedInputRunnable, null); 5706 } 5707 } 5708 5709 void unscheduleConsumeBatchedInput() { 5710 if (mConsumeBatchedInputScheduled) { 5711 mConsumeBatchedInputScheduled = false; 5712 mChoreographer.removeCallbacks(Choreographer.CALLBACK_INPUT, 5713 mConsumedBatchedInputRunnable, null); 5714 } 5715 } 5716 5717 void doConsumeBatchedInput(long frameTimeNanos) { 5718 if (mConsumeBatchedInputScheduled) { 5719 mConsumeBatchedInputScheduled = false; 5720 if (mInputEventReceiver != null) { 5721 if (mInputEventReceiver.consumeBatchedInputEvents(frameTimeNanos)) { 5722 // If we consumed a batch here, we want to go ahead and schedule the 5723 // consumption of batched input events on the next frame. Otherwise, we would 5724 // wait until we have more input events pending and might get starved by other 5725 // things occurring in the process. 5726 scheduleConsumeBatchedInput(); 5727 } 5728 } 5729 doProcessInputEvents(); 5730 } 5731 } 5732 5733 final class TraversalRunnable implements Runnable { 5734 @Override 5735 public void run() { 5736 doTraversal(); 5737 } 5738 } 5739 final TraversalRunnable mTraversalRunnable = new TraversalRunnable(); 5740 5741 final class WindowInputEventReceiver extends InputEventReceiver { 5742 public WindowInputEventReceiver(InputChannel inputChannel, Looper looper) { 5743 super(inputChannel, looper); 5744 } 5745 5746 @Override 5747 public void onInputEvent(InputEvent event) { 5748 enqueueInputEvent(event, this, 0, true); 5749 } 5750 5751 @Override 5752 public void onBatchedInputEventPending() { 5753 scheduleConsumeBatchedInput(); 5754 } 5755 5756 @Override 5757 public void dispose() { 5758 unscheduleConsumeBatchedInput(); 5759 super.dispose(); 5760 } 5761 } 5762 WindowInputEventReceiver mInputEventReceiver; 5763 5764 final class ConsumeBatchedInputRunnable implements Runnable { 5765 @Override 5766 public void run() { 5767 doConsumeBatchedInput(mChoreographer.getFrameTimeNanos()); 5768 } 5769 } 5770 final ConsumeBatchedInputRunnable mConsumedBatchedInputRunnable = 5771 new ConsumeBatchedInputRunnable(); 5772 boolean mConsumeBatchedInputScheduled; 5773 5774 final class InvalidateOnAnimationRunnable implements Runnable { 5775 private boolean mPosted; 5776 private final ArrayList<View> mViews = new ArrayList<View>(); 5777 private final ArrayList<AttachInfo.InvalidateInfo> mViewRects = 5778 new ArrayList<AttachInfo.InvalidateInfo>(); 5779 private View[] mTempViews; 5780 private AttachInfo.InvalidateInfo[] mTempViewRects; 5781 5782 public void addView(View view) { 5783 synchronized (this) { 5784 mViews.add(view); 5785 postIfNeededLocked(); 5786 } 5787 } 5788 5789 public void addViewRect(AttachInfo.InvalidateInfo info) { 5790 synchronized (this) { 5791 mViewRects.add(info); 5792 postIfNeededLocked(); 5793 } 5794 } 5795 5796 public void removeView(View view) { 5797 synchronized (this) { 5798 mViews.remove(view); 5799 5800 for (int i = mViewRects.size(); i-- > 0; ) { 5801 AttachInfo.InvalidateInfo info = mViewRects.get(i); 5802 if (info.target == view) { 5803 mViewRects.remove(i); 5804 info.recycle(); 5805 } 5806 } 5807 5808 if (mPosted && mViews.isEmpty() && mViewRects.isEmpty()) { 5809 mChoreographer.removeCallbacks(Choreographer.CALLBACK_ANIMATION, this, null); 5810 mPosted = false; 5811 } 5812 } 5813 } 5814 5815 @Override 5816 public void run() { 5817 final int viewCount; 5818 final int viewRectCount; 5819 synchronized (this) { 5820 mPosted = false; 5821 5822 viewCount = mViews.size(); 5823 if (viewCount != 0) { 5824 mTempViews = mViews.toArray(mTempViews != null 5825 ? mTempViews : new View[viewCount]); 5826 mViews.clear(); 5827 } 5828 5829 viewRectCount = mViewRects.size(); 5830 if (viewRectCount != 0) { 5831 mTempViewRects = mViewRects.toArray(mTempViewRects != null 5832 ? mTempViewRects : new AttachInfo.InvalidateInfo[viewRectCount]); 5833 mViewRects.clear(); 5834 } 5835 } 5836 5837 for (int i = 0; i < viewCount; i++) { 5838 mTempViews[i].invalidate(); 5839 mTempViews[i] = null; 5840 } 5841 5842 for (int i = 0; i < viewRectCount; i++) { 5843 final View.AttachInfo.InvalidateInfo info = mTempViewRects[i]; 5844 info.target.invalidate(info.left, info.top, info.right, info.bottom); 5845 info.recycle(); 5846 } 5847 } 5848 5849 private void postIfNeededLocked() { 5850 if (!mPosted) { 5851 mChoreographer.postCallback(Choreographer.CALLBACK_ANIMATION, this, null); 5852 mPosted = true; 5853 } 5854 } 5855 } 5856 final InvalidateOnAnimationRunnable mInvalidateOnAnimationRunnable = 5857 new InvalidateOnAnimationRunnable(); 5858 5859 public void dispatchInvalidateDelayed(View view, long delayMilliseconds) { 5860 Message msg = mHandler.obtainMessage(MSG_INVALIDATE, view); 5861 mHandler.sendMessageDelayed(msg, delayMilliseconds); 5862 } 5863 5864 public void dispatchInvalidateRectDelayed(AttachInfo.InvalidateInfo info, 5865 long delayMilliseconds) { 5866 final Message msg = mHandler.obtainMessage(MSG_INVALIDATE_RECT, info); 5867 mHandler.sendMessageDelayed(msg, delayMilliseconds); 5868 } 5869 5870 public void dispatchInvalidateOnAnimation(View view) { 5871 mInvalidateOnAnimationRunnable.addView(view); 5872 } 5873 5874 public void dispatchInvalidateRectOnAnimation(AttachInfo.InvalidateInfo info) { 5875 mInvalidateOnAnimationRunnable.addViewRect(info); 5876 } 5877 5878 public void cancelInvalidate(View view) { 5879 mHandler.removeMessages(MSG_INVALIDATE, view); 5880 // fixme: might leak the AttachInfo.InvalidateInfo objects instead of returning 5881 // them to the pool 5882 mHandler.removeMessages(MSG_INVALIDATE_RECT, view); 5883 mInvalidateOnAnimationRunnable.removeView(view); 5884 } 5885 5886 public void dispatchInputEvent(InputEvent event) { 5887 dispatchInputEvent(event, null); 5888 } 5889 5890 public void dispatchInputEvent(InputEvent event, InputEventReceiver receiver) { 5891 SomeArgs args = SomeArgs.obtain(); 5892 args.arg1 = event; 5893 args.arg2 = receiver; 5894 Message msg = mHandler.obtainMessage(MSG_DISPATCH_INPUT_EVENT, args); 5895 msg.setAsynchronous(true); 5896 mHandler.sendMessage(msg); 5897 } 5898 5899 public void synthesizeInputEvent(InputEvent event) { 5900 Message msg = mHandler.obtainMessage(MSG_SYNTHESIZE_INPUT_EVENT, event); 5901 msg.setAsynchronous(true); 5902 mHandler.sendMessage(msg); 5903 } 5904 5905 public void dispatchKeyFromIme(KeyEvent event) { 5906 Message msg = mHandler.obtainMessage(MSG_DISPATCH_KEY_FROM_IME, event); 5907 msg.setAsynchronous(true); 5908 mHandler.sendMessage(msg); 5909 } 5910 5911 /** 5912 * Reinject unhandled {@link InputEvent}s in order to synthesize fallbacks events. 5913 * 5914 * Note that it is the responsibility of the caller of this API to recycle the InputEvent it 5915 * passes in. 5916 */ 5917 public void dispatchUnhandledInputEvent(InputEvent event) { 5918 if (event instanceof MotionEvent) { 5919 event = MotionEvent.obtain((MotionEvent) event); 5920 } 5921 synthesizeInputEvent(event); 5922 } 5923 5924 public void dispatchAppVisibility(boolean visible) { 5925 Message msg = mHandler.obtainMessage(MSG_DISPATCH_APP_VISIBILITY); 5926 msg.arg1 = visible ? 1 : 0; 5927 mHandler.sendMessage(msg); 5928 } 5929 5930 public void dispatchGetNewSurface() { 5931 Message msg = mHandler.obtainMessage(MSG_DISPATCH_GET_NEW_SURFACE); 5932 mHandler.sendMessage(msg); 5933 } 5934 5935 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 5936 Message msg = Message.obtain(); 5937 msg.what = MSG_WINDOW_FOCUS_CHANGED; 5938 msg.arg1 = hasFocus ? 1 : 0; 5939 msg.arg2 = inTouchMode ? 1 : 0; 5940 mHandler.sendMessage(msg); 5941 } 5942 5943 public void dispatchCloseSystemDialogs(String reason) { 5944 Message msg = Message.obtain(); 5945 msg.what = MSG_CLOSE_SYSTEM_DIALOGS; 5946 msg.obj = reason; 5947 mHandler.sendMessage(msg); 5948 } 5949 5950 public void dispatchDragEvent(DragEvent event) { 5951 final int what; 5952 if (event.getAction() == DragEvent.ACTION_DRAG_LOCATION) { 5953 what = MSG_DISPATCH_DRAG_LOCATION_EVENT; 5954 mHandler.removeMessages(what); 5955 } else { 5956 what = MSG_DISPATCH_DRAG_EVENT; 5957 } 5958 Message msg = mHandler.obtainMessage(what, event); 5959 mHandler.sendMessage(msg); 5960 } 5961 5962 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 5963 int localValue, int localChanges) { 5964 SystemUiVisibilityInfo args = new SystemUiVisibilityInfo(); 5965 args.seq = seq; 5966 args.globalVisibility = globalVisibility; 5967 args.localValue = localValue; 5968 args.localChanges = localChanges; 5969 mHandler.sendMessage(mHandler.obtainMessage(MSG_DISPATCH_SYSTEM_UI_VISIBILITY, args)); 5970 } 5971 5972 public void dispatchDoneAnimating() { 5973 mHandler.sendEmptyMessage(MSG_DISPATCH_DONE_ANIMATING); 5974 } 5975 5976 public void dispatchCheckFocus() { 5977 if (!mHandler.hasMessages(MSG_CHECK_FOCUS)) { 5978 // This will result in a call to checkFocus() below. 5979 mHandler.sendEmptyMessage(MSG_CHECK_FOCUS); 5980 } 5981 } 5982 5983 /** 5984 * Post a callback to send a 5985 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 5986 * This event is send at most once every 5987 * {@link ViewConfiguration#getSendRecurringAccessibilityEventsInterval()}. 5988 */ 5989 private void postSendWindowContentChangedCallback(View source, int changeType) { 5990 if (mSendWindowContentChangedAccessibilityEvent == null) { 5991 mSendWindowContentChangedAccessibilityEvent = 5992 new SendWindowContentChangedAccessibilityEvent(); 5993 } 5994 mSendWindowContentChangedAccessibilityEvent.runOrPost(source, changeType); 5995 } 5996 5997 /** 5998 * Remove a posted callback to send a 5999 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 6000 */ 6001 private void removeSendWindowContentChangedCallback() { 6002 if (mSendWindowContentChangedAccessibilityEvent != null) { 6003 mHandler.removeCallbacks(mSendWindowContentChangedAccessibilityEvent); 6004 } 6005 } 6006 6007 @Override 6008 public boolean showContextMenuForChild(View originalView) { 6009 return false; 6010 } 6011 6012 @Override 6013 public ActionMode startActionModeForChild(View originalView, ActionMode.Callback callback) { 6014 return null; 6015 } 6016 6017 @Override 6018 public void createContextMenu(ContextMenu menu) { 6019 } 6020 6021 @Override 6022 public void childDrawableStateChanged(View child) { 6023 } 6024 6025 @Override 6026 public boolean requestSendAccessibilityEvent(View child, AccessibilityEvent event) { 6027 if (mView == null) { 6028 return false; 6029 } 6030 // Intercept accessibility focus events fired by virtual nodes to keep 6031 // track of accessibility focus position in such nodes. 6032 final int eventType = event.getEventType(); 6033 switch (eventType) { 6034 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUSED: { 6035 final long sourceNodeId = event.getSourceNodeId(); 6036 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 6037 sourceNodeId); 6038 View source = mView.findViewByAccessibilityId(accessibilityViewId); 6039 if (source != null) { 6040 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 6041 if (provider != null) { 6042 AccessibilityNodeInfo node = provider.createAccessibilityNodeInfo( 6043 AccessibilityNodeInfo.getVirtualDescendantId(sourceNodeId)); 6044 setAccessibilityFocus(source, node); 6045 } 6046 } 6047 } break; 6048 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUS_CLEARED: { 6049 final long sourceNodeId = event.getSourceNodeId(); 6050 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 6051 sourceNodeId); 6052 View source = mView.findViewByAccessibilityId(accessibilityViewId); 6053 if (source != null) { 6054 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 6055 if (provider != null) { 6056 setAccessibilityFocus(null, null); 6057 } 6058 } 6059 } break; 6060 } 6061 mAccessibilityManager.sendAccessibilityEvent(event); 6062 return true; 6063 } 6064 6065 @Override 6066 public void notifySubtreeAccessibilityStateChanged(View child, View source, int changeType) { 6067 postSendWindowContentChangedCallback(source, changeType); 6068 } 6069 6070 @Override 6071 public boolean canResolveLayoutDirection() { 6072 return true; 6073 } 6074 6075 @Override 6076 public boolean isLayoutDirectionResolved() { 6077 return true; 6078 } 6079 6080 @Override 6081 public int getLayoutDirection() { 6082 return View.LAYOUT_DIRECTION_RESOLVED_DEFAULT; 6083 } 6084 6085 @Override 6086 public boolean canResolveTextDirection() { 6087 return true; 6088 } 6089 6090 @Override 6091 public boolean isTextDirectionResolved() { 6092 return true; 6093 } 6094 6095 @Override 6096 public int getTextDirection() { 6097 return View.TEXT_DIRECTION_RESOLVED_DEFAULT; 6098 } 6099 6100 @Override 6101 public boolean canResolveTextAlignment() { 6102 return true; 6103 } 6104 6105 @Override 6106 public boolean isTextAlignmentResolved() { 6107 return true; 6108 } 6109 6110 @Override 6111 public int getTextAlignment() { 6112 return View.TEXT_ALIGNMENT_RESOLVED_DEFAULT; 6113 } 6114 6115 private View getCommonPredecessor(View first, View second) { 6116 if (mAttachInfo != null) { 6117 if (mTempHashSet == null) { 6118 mTempHashSet = new HashSet<View>(); 6119 } 6120 HashSet<View> seen = mTempHashSet; 6121 seen.clear(); 6122 View firstCurrent = first; 6123 while (firstCurrent != null) { 6124 seen.add(firstCurrent); 6125 ViewParent firstCurrentParent = firstCurrent.mParent; 6126 if (firstCurrentParent instanceof View) { 6127 firstCurrent = (View) firstCurrentParent; 6128 } else { 6129 firstCurrent = null; 6130 } 6131 } 6132 View secondCurrent = second; 6133 while (secondCurrent != null) { 6134 if (seen.contains(secondCurrent)) { 6135 seen.clear(); 6136 return secondCurrent; 6137 } 6138 ViewParent secondCurrentParent = secondCurrent.mParent; 6139 if (secondCurrentParent instanceof View) { 6140 secondCurrent = (View) secondCurrentParent; 6141 } else { 6142 secondCurrent = null; 6143 } 6144 } 6145 seen.clear(); 6146 } 6147 return null; 6148 } 6149 6150 void checkThread() { 6151 if (mThread != Thread.currentThread()) { 6152 throw new CalledFromWrongThreadException( 6153 "Only the original thread that created a view hierarchy can touch its views."); 6154 } 6155 } 6156 6157 @Override 6158 public void requestDisallowInterceptTouchEvent(boolean disallowIntercept) { 6159 // ViewAncestor never intercepts touch event, so this can be a no-op 6160 } 6161 6162 @Override 6163 public boolean requestChildRectangleOnScreen(View child, Rect rectangle, boolean immediate) { 6164 final boolean scrolled = scrollToRectOrFocus(rectangle, immediate); 6165 if (rectangle != null) { 6166 mTempRect.set(rectangle); 6167 mTempRect.offset(0, -mCurScrollY); 6168 mTempRect.offset(mAttachInfo.mWindowLeft, mAttachInfo.mWindowTop); 6169 try { 6170 mWindowSession.onRectangleOnScreenRequested(mWindow, mTempRect, immediate); 6171 } catch (RemoteException re) { 6172 /* ignore */ 6173 } 6174 } 6175 return scrolled; 6176 } 6177 6178 @Override 6179 public void childHasTransientStateChanged(View child, boolean hasTransientState) { 6180 // Do nothing. 6181 } 6182 6183 @Override 6184 public boolean onStartNestedScroll(View child, View target, int nestedScrollAxes) { 6185 return false; 6186 } 6187 6188 @Override 6189 public void onStopNestedScroll(View target) { 6190 } 6191 6192 @Override 6193 public void onNestedScrollAccepted(View child, View target, int nestedScrollAxes) { 6194 } 6195 6196 @Override 6197 public void onNestedScroll(View target, int dxConsumed, int dyConsumed, 6198 int dxUnconsumed, int dyUnconsumed) { 6199 } 6200 6201 @Override 6202 public void onNestedPreScroll(View target, int dx, int dy, int[] consumed) { 6203 } 6204 6205 @Override 6206 public boolean onNestedFling(View target, float velocityX, float velocityY, boolean consumed) { 6207 return false; 6208 } 6209 6210 void changeCanvasOpacity(boolean opaque) { 6211 Log.d(TAG, "changeCanvasOpacity: opaque=" + opaque); 6212 if (mAttachInfo.mHardwareRenderer != null) { 6213 mAttachInfo.mHardwareRenderer.setOpaque(opaque); 6214 } 6215 } 6216 6217 class TakenSurfaceHolder extends BaseSurfaceHolder { 6218 @Override 6219 public boolean onAllowLockCanvas() { 6220 return mDrawingAllowed; 6221 } 6222 6223 @Override 6224 public void onRelayoutContainer() { 6225 // Not currently interesting -- from changing between fixed and layout size. 6226 } 6227 6228 @Override 6229 public void setFormat(int format) { 6230 ((RootViewSurfaceTaker)mView).setSurfaceFormat(format); 6231 } 6232 6233 @Override 6234 public void setType(int type) { 6235 ((RootViewSurfaceTaker)mView).setSurfaceType(type); 6236 } 6237 6238 @Override 6239 public void onUpdateSurface() { 6240 // We take care of format and type changes on our own. 6241 throw new IllegalStateException("Shouldn't be here"); 6242 } 6243 6244 @Override 6245 public boolean isCreating() { 6246 return mIsCreating; 6247 } 6248 6249 @Override 6250 public void setFixedSize(int width, int height) { 6251 throw new UnsupportedOperationException( 6252 "Currently only support sizing from layout"); 6253 } 6254 6255 @Override 6256 public void setKeepScreenOn(boolean screenOn) { 6257 ((RootViewSurfaceTaker)mView).setSurfaceKeepScreenOn(screenOn); 6258 } 6259 } 6260 6261 static class W extends IWindow.Stub { 6262 private final WeakReference<ViewRootImpl> mViewAncestor; 6263 private final IWindowSession mWindowSession; 6264 6265 W(ViewRootImpl viewAncestor) { 6266 mViewAncestor = new WeakReference<ViewRootImpl>(viewAncestor); 6267 mWindowSession = viewAncestor.mWindowSession; 6268 } 6269 6270 @Override 6271 public void resized(Rect frame, Rect overscanInsets, Rect contentInsets, 6272 Rect visibleInsets, boolean reportDraw, Configuration newConfig) { 6273 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6274 if (viewAncestor != null) { 6275 viewAncestor.dispatchResized(frame, overscanInsets, contentInsets, 6276 visibleInsets, reportDraw, newConfig); 6277 } 6278 } 6279 6280 @Override 6281 public void moved(int newX, int newY) { 6282 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6283 if (viewAncestor != null) { 6284 viewAncestor.dispatchMoved(newX, newY); 6285 } 6286 } 6287 6288 @Override 6289 public void dispatchAppVisibility(boolean visible) { 6290 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6291 if (viewAncestor != null) { 6292 viewAncestor.dispatchAppVisibility(visible); 6293 } 6294 } 6295 6296 @Override 6297 public void dispatchGetNewSurface() { 6298 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6299 if (viewAncestor != null) { 6300 viewAncestor.dispatchGetNewSurface(); 6301 } 6302 } 6303 6304 @Override 6305 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 6306 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6307 if (viewAncestor != null) { 6308 viewAncestor.windowFocusChanged(hasFocus, inTouchMode); 6309 } 6310 } 6311 6312 private static int checkCallingPermission(String permission) { 6313 try { 6314 return ActivityManagerNative.getDefault().checkPermission( 6315 permission, Binder.getCallingPid(), Binder.getCallingUid()); 6316 } catch (RemoteException e) { 6317 return PackageManager.PERMISSION_DENIED; 6318 } 6319 } 6320 6321 @Override 6322 public void executeCommand(String command, String parameters, ParcelFileDescriptor out) { 6323 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6324 if (viewAncestor != null) { 6325 final View view = viewAncestor.mView; 6326 if (view != null) { 6327 if (checkCallingPermission(Manifest.permission.DUMP) != 6328 PackageManager.PERMISSION_GRANTED) { 6329 throw new SecurityException("Insufficient permissions to invoke" 6330 + " executeCommand() from pid=" + Binder.getCallingPid() 6331 + ", uid=" + Binder.getCallingUid()); 6332 } 6333 6334 OutputStream clientStream = null; 6335 try { 6336 clientStream = new ParcelFileDescriptor.AutoCloseOutputStream(out); 6337 ViewDebug.dispatchCommand(view, command, parameters, clientStream); 6338 } catch (IOException e) { 6339 e.printStackTrace(); 6340 } finally { 6341 if (clientStream != null) { 6342 try { 6343 clientStream.close(); 6344 } catch (IOException e) { 6345 e.printStackTrace(); 6346 } 6347 } 6348 } 6349 } 6350 } 6351 } 6352 6353 @Override 6354 public void closeSystemDialogs(String reason) { 6355 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6356 if (viewAncestor != null) { 6357 viewAncestor.dispatchCloseSystemDialogs(reason); 6358 } 6359 } 6360 6361 @Override 6362 public void dispatchWallpaperOffsets(float x, float y, float xStep, float yStep, 6363 boolean sync) { 6364 if (sync) { 6365 try { 6366 mWindowSession.wallpaperOffsetsComplete(asBinder()); 6367 } catch (RemoteException e) { 6368 } 6369 } 6370 } 6371 6372 @Override 6373 public void dispatchWallpaperCommand(String action, int x, int y, 6374 int z, Bundle extras, boolean sync) { 6375 if (sync) { 6376 try { 6377 mWindowSession.wallpaperCommandComplete(asBinder(), null); 6378 } catch (RemoteException e) { 6379 } 6380 } 6381 } 6382 6383 /* Drag/drop */ 6384 @Override 6385 public void dispatchDragEvent(DragEvent event) { 6386 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6387 if (viewAncestor != null) { 6388 viewAncestor.dispatchDragEvent(event); 6389 } 6390 } 6391 6392 @Override 6393 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 6394 int localValue, int localChanges) { 6395 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6396 if (viewAncestor != null) { 6397 viewAncestor.dispatchSystemUiVisibilityChanged(seq, globalVisibility, 6398 localValue, localChanges); 6399 } 6400 } 6401 6402 @Override 6403 public void doneAnimating() { 6404 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6405 if (viewAncestor != null) { 6406 viewAncestor.dispatchDoneAnimating(); 6407 } 6408 } 6409 } 6410 6411 public static final class CalledFromWrongThreadException extends AndroidRuntimeException { 6412 public CalledFromWrongThreadException(String msg) { 6413 super(msg); 6414 } 6415 } 6416 6417 static RunQueue getRunQueue() { 6418 RunQueue rq = sRunQueues.get(); 6419 if (rq != null) { 6420 return rq; 6421 } 6422 rq = new RunQueue(); 6423 sRunQueues.set(rq); 6424 return rq; 6425 } 6426 6427 /** 6428 * The run queue is used to enqueue pending work from Views when no Handler is 6429 * attached. The work is executed during the next call to performTraversals on 6430 * the thread. 6431 * @hide 6432 */ 6433 static final class RunQueue { 6434 private final ArrayList<HandlerAction> mActions = new ArrayList<HandlerAction>(); 6435 6436 void post(Runnable action) { 6437 postDelayed(action, 0); 6438 } 6439 6440 void postDelayed(Runnable action, long delayMillis) { 6441 HandlerAction handlerAction = new HandlerAction(); 6442 handlerAction.action = action; 6443 handlerAction.delay = delayMillis; 6444 6445 synchronized (mActions) { 6446 mActions.add(handlerAction); 6447 } 6448 } 6449 6450 void removeCallbacks(Runnable action) { 6451 final HandlerAction handlerAction = new HandlerAction(); 6452 handlerAction.action = action; 6453 6454 synchronized (mActions) { 6455 final ArrayList<HandlerAction> actions = mActions; 6456 6457 while (actions.remove(handlerAction)) { 6458 // Keep going 6459 } 6460 } 6461 } 6462 6463 void executeActions(Handler handler) { 6464 synchronized (mActions) { 6465 final ArrayList<HandlerAction> actions = mActions; 6466 final int count = actions.size(); 6467 6468 for (int i = 0; i < count; i++) { 6469 final HandlerAction handlerAction = actions.get(i); 6470 handler.postDelayed(handlerAction.action, handlerAction.delay); 6471 } 6472 6473 actions.clear(); 6474 } 6475 } 6476 6477 private static class HandlerAction { 6478 Runnable action; 6479 long delay; 6480 6481 @Override 6482 public boolean equals(Object o) { 6483 if (this == o) return true; 6484 if (o == null || getClass() != o.getClass()) return false; 6485 6486 HandlerAction that = (HandlerAction) o; 6487 return !(action != null ? !action.equals(that.action) : that.action != null); 6488 6489 } 6490 6491 @Override 6492 public int hashCode() { 6493 int result = action != null ? action.hashCode() : 0; 6494 result = 31 * result + (int) (delay ^ (delay >>> 32)); 6495 return result; 6496 } 6497 } 6498 } 6499 6500 /** 6501 * Class for managing the accessibility interaction connection 6502 * based on the global accessibility state. 6503 */ 6504 final class AccessibilityInteractionConnectionManager 6505 implements AccessibilityStateChangeListener { 6506 @Override 6507 public void onAccessibilityStateChanged(boolean enabled) { 6508 if (enabled) { 6509 ensureConnection(); 6510 if (mAttachInfo != null && mAttachInfo.mHasWindowFocus) { 6511 mView.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 6512 View focusedView = mView.findFocus(); 6513 if (focusedView != null && focusedView != mView) { 6514 focusedView.sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_FOCUSED); 6515 } 6516 } 6517 } else { 6518 ensureNoConnection(); 6519 mHandler.obtainMessage(MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST).sendToTarget(); 6520 } 6521 } 6522 6523 public void ensureConnection() { 6524 if (mAttachInfo != null) { 6525 final boolean registered = 6526 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED_ITEM_ID; 6527 if (!registered) { 6528 mAttachInfo.mAccessibilityWindowId = 6529 mAccessibilityManager.addAccessibilityInteractionConnection(mWindow, 6530 new AccessibilityInteractionConnection(ViewRootImpl.this)); 6531 } 6532 } 6533 } 6534 6535 public void ensureNoConnection() { 6536 final boolean registered = 6537 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED_ITEM_ID; 6538 if (registered) { 6539 mAttachInfo.mAccessibilityWindowId = AccessibilityNodeInfo.UNDEFINED_ITEM_ID; 6540 mAccessibilityManager.removeAccessibilityInteractionConnection(mWindow); 6541 } 6542 } 6543 } 6544 6545 /** 6546 * This class is an interface this ViewAncestor provides to the 6547 * AccessibilityManagerService to the latter can interact with 6548 * the view hierarchy in this ViewAncestor. 6549 */ 6550 static final class AccessibilityInteractionConnection 6551 extends IAccessibilityInteractionConnection.Stub { 6552 private final WeakReference<ViewRootImpl> mViewRootImpl; 6553 6554 AccessibilityInteractionConnection(ViewRootImpl viewRootImpl) { 6555 mViewRootImpl = new WeakReference<ViewRootImpl>(viewRootImpl); 6556 } 6557 6558 @Override 6559 public void findAccessibilityNodeInfoByAccessibilityId(long accessibilityNodeId, 6560 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 6561 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6562 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6563 if (viewRootImpl != null && viewRootImpl.mView != null) { 6564 viewRootImpl.getAccessibilityInteractionController() 6565 .findAccessibilityNodeInfoByAccessibilityIdClientThread(accessibilityNodeId, 6566 interactionId, callback, flags, interrogatingPid, interrogatingTid, 6567 spec); 6568 } else { 6569 // We cannot make the call and notify the caller so it does not wait. 6570 try { 6571 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 6572 } catch (RemoteException re) { 6573 /* best effort - ignore */ 6574 } 6575 } 6576 } 6577 6578 @Override 6579 public void performAccessibilityAction(long accessibilityNodeId, int action, 6580 Bundle arguments, int interactionId, 6581 IAccessibilityInteractionConnectionCallback callback, int flags, 6582 int interogatingPid, long interrogatingTid) { 6583 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6584 if (viewRootImpl != null && viewRootImpl.mView != null) { 6585 viewRootImpl.getAccessibilityInteractionController() 6586 .performAccessibilityActionClientThread(accessibilityNodeId, action, arguments, 6587 interactionId, callback, flags, interogatingPid, interrogatingTid); 6588 } else { 6589 // We cannot make the call and notify the caller so it does not wait. 6590 try { 6591 callback.setPerformAccessibilityActionResult(false, interactionId); 6592 } catch (RemoteException re) { 6593 /* best effort - ignore */ 6594 } 6595 } 6596 } 6597 6598 @Override 6599 public void findAccessibilityNodeInfosByViewId(long accessibilityNodeId, 6600 String viewId, int interactionId, 6601 IAccessibilityInteractionConnectionCallback callback, int flags, 6602 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6603 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6604 if (viewRootImpl != null && viewRootImpl.mView != null) { 6605 viewRootImpl.getAccessibilityInteractionController() 6606 .findAccessibilityNodeInfosByViewIdClientThread(accessibilityNodeId, 6607 viewId, interactionId, callback, flags, interrogatingPid, 6608 interrogatingTid, spec); 6609 } else { 6610 // We cannot make the call and notify the caller so it does not wait. 6611 try { 6612 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6613 } catch (RemoteException re) { 6614 /* best effort - ignore */ 6615 } 6616 } 6617 } 6618 6619 @Override 6620 public void findAccessibilityNodeInfosByText(long accessibilityNodeId, String text, 6621 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 6622 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6623 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6624 if (viewRootImpl != null && viewRootImpl.mView != null) { 6625 viewRootImpl.getAccessibilityInteractionController() 6626 .findAccessibilityNodeInfosByTextClientThread(accessibilityNodeId, text, 6627 interactionId, callback, flags, interrogatingPid, interrogatingTid, 6628 spec); 6629 } else { 6630 // We cannot make the call and notify the caller so it does not wait. 6631 try { 6632 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 6633 } catch (RemoteException re) { 6634 /* best effort - ignore */ 6635 } 6636 } 6637 } 6638 6639 @Override 6640 public void findFocus(long accessibilityNodeId, int focusType, int interactionId, 6641 IAccessibilityInteractionConnectionCallback callback, int flags, 6642 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6643 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6644 if (viewRootImpl != null && viewRootImpl.mView != null) { 6645 viewRootImpl.getAccessibilityInteractionController() 6646 .findFocusClientThread(accessibilityNodeId, focusType, interactionId, callback, 6647 flags, interrogatingPid, interrogatingTid, spec); 6648 } else { 6649 // We cannot make the call and notify the caller so it does not wait. 6650 try { 6651 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6652 } catch (RemoteException re) { 6653 /* best effort - ignore */ 6654 } 6655 } 6656 } 6657 6658 @Override 6659 public void focusSearch(long accessibilityNodeId, int direction, int interactionId, 6660 IAccessibilityInteractionConnectionCallback callback, int flags, 6661 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6662 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6663 if (viewRootImpl != null && viewRootImpl.mView != null) { 6664 viewRootImpl.getAccessibilityInteractionController() 6665 .focusSearchClientThread(accessibilityNodeId, direction, interactionId, 6666 callback, flags, interrogatingPid, interrogatingTid, spec); 6667 } else { 6668 // We cannot make the call and notify the caller so it does not wait. 6669 try { 6670 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6671 } catch (RemoteException re) { 6672 /* best effort - ignore */ 6673 } 6674 } 6675 } 6676 } 6677 6678 private class SendWindowContentChangedAccessibilityEvent implements Runnable { 6679 private int mChangeTypes = 0; 6680 6681 public View mSource; 6682 public long mLastEventTimeMillis; 6683 6684 @Override 6685 public void run() { 6686 // The accessibility may be turned off while we were waiting so check again. 6687 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 6688 mLastEventTimeMillis = SystemClock.uptimeMillis(); 6689 AccessibilityEvent event = AccessibilityEvent.obtain(); 6690 event.setEventType(AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED); 6691 event.setContentChangeTypes(mChangeTypes); 6692 mSource.sendAccessibilityEventUnchecked(event); 6693 } else { 6694 mLastEventTimeMillis = 0; 6695 } 6696 // In any case reset to initial state. 6697 mSource.resetSubtreeAccessibilityStateChanged(); 6698 mSource = null; 6699 mChangeTypes = 0; 6700 } 6701 6702 public void runOrPost(View source, int changeType) { 6703 if (mSource != null) { 6704 // If there is no common predecessor, then mSource points to 6705 // a removed view, hence in this case always prefer the source. 6706 View predecessor = getCommonPredecessor(mSource, source); 6707 mSource = (predecessor != null) ? predecessor : source; 6708 mChangeTypes |= changeType; 6709 return; 6710 } 6711 mSource = source; 6712 mChangeTypes = changeType; 6713 final long timeSinceLastMillis = SystemClock.uptimeMillis() - mLastEventTimeMillis; 6714 final long minEventIntevalMillis = 6715 ViewConfiguration.getSendRecurringAccessibilityEventsInterval(); 6716 if (timeSinceLastMillis >= minEventIntevalMillis) { 6717 mSource.removeCallbacks(this); 6718 run(); 6719 } else { 6720 mSource.postDelayed(this, minEventIntevalMillis - timeSinceLastMillis); 6721 } 6722 } 6723 } 6724} 6725