ViewRootImpl.java revision b6ab098bad4b126eaaaa3aaa5a512fefc4e0749b
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.Context; 25import android.content.pm.PackageManager; 26import android.content.res.CompatibilityInfo; 27import android.content.res.Configuration; 28import android.content.res.Resources; 29import android.graphics.Canvas; 30import android.graphics.Matrix; 31import android.graphics.Paint; 32import android.graphics.PixelFormat; 33import android.graphics.Point; 34import android.graphics.PointF; 35import android.graphics.PorterDuff; 36import android.graphics.Rect; 37import android.graphics.Region; 38import android.graphics.drawable.Drawable; 39import android.hardware.display.DisplayManager; 40import android.hardware.display.DisplayManager.DisplayListener; 41import android.media.AudioManager; 42import android.os.Binder; 43import android.os.Build; 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.Process; 51import android.os.RemoteException; 52import android.os.SystemClock; 53import android.os.SystemProperties; 54import android.os.Trace; 55import android.util.AndroidRuntimeException; 56import android.util.DisplayMetrics; 57import android.util.Log; 58import android.util.Slog; 59import android.util.TypedValue; 60import android.view.Surface.OutOfResourcesException; 61import android.view.View.AttachInfo; 62import android.view.View.MeasureSpec; 63import android.view.accessibility.AccessibilityEvent; 64import android.view.accessibility.AccessibilityManager; 65import android.view.accessibility.AccessibilityManager.AccessibilityStateChangeListener; 66import android.view.accessibility.AccessibilityManager.HighTextContrastChangeListener; 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 // property used by emulator to determine display shape 124 public static final String PROPERTY_EMULATOR_CIRCULAR = "ro.emulator.circular"; 125 126 /** 127 * Maximum time we allow the user to roll the trackball enough to generate 128 * a key event, before resetting the counters. 129 */ 130 static final int MAX_TRACKBALL_DELAY = 250; 131 132 static final ThreadLocal<RunQueue> sRunQueues = new ThreadLocal<RunQueue>(); 133 134 static final ArrayList<Runnable> sFirstDrawHandlers = new ArrayList<Runnable>(); 135 static boolean sFirstDrawComplete = false; 136 137 static final ArrayList<ComponentCallbacks> sConfigCallbacks 138 = new ArrayList<ComponentCallbacks>(); 139 140 final Context mContext; 141 final IWindowSession mWindowSession; 142 final Display mDisplay; 143 final DisplayManager mDisplayManager; 144 final String mBasePackageName; 145 146 final int[] mTmpLocation = new int[2]; 147 148 final TypedValue mTmpValue = new TypedValue(); 149 150 final Thread mThread; 151 152 final WindowLeaked mLocation; 153 154 final WindowManager.LayoutParams mWindowAttributes = new WindowManager.LayoutParams(); 155 156 final W mWindow; 157 158 final int mTargetSdkVersion; 159 160 int mSeq; 161 162 View mView; 163 164 View mAccessibilityFocusedHost; 165 AccessibilityNodeInfo mAccessibilityFocusedVirtualView; 166 167 int mViewVisibility; 168 boolean mAppVisible = true; 169 int mOrigWindowType = -1; 170 171 // Set to true if the owner of this window is in the stopped state, 172 // so the window should no longer be active. 173 boolean mStopped = false; 174 175 boolean mLastInCompatMode = false; 176 177 SurfaceHolder.Callback2 mSurfaceHolderCallback; 178 BaseSurfaceHolder mSurfaceHolder; 179 boolean mIsCreating; 180 boolean mDrawingAllowed; 181 182 final Region mTransparentRegion; 183 final Region mPreviousTransparentRegion; 184 185 int mWidth; 186 int mHeight; 187 Rect mDirty; 188 boolean mIsAnimating; 189 190 CompatibilityInfo.Translator mTranslator; 191 192 final View.AttachInfo mAttachInfo; 193 InputChannel mInputChannel; 194 InputQueue.Callback mInputQueueCallback; 195 InputQueue mInputQueue; 196 FallbackEventHandler mFallbackEventHandler; 197 Choreographer mChoreographer; 198 199 final Rect mTempRect; // used in the transaction to not thrash the heap. 200 final Rect mVisRect; // used to retrieve visible rect of focused view. 201 202 boolean mTraversalScheduled; 203 int mTraversalBarrier; 204 boolean mWillDrawSoon; 205 /** Set to true while in performTraversals for detecting when die(true) is called from internal 206 * callbacks such as onMeasure, onPreDraw, onDraw and deferring doDie() until later. */ 207 boolean mIsInTraversal; 208 boolean mApplyInsetsRequested; 209 boolean mLayoutRequested; 210 boolean mFirst; 211 boolean mReportNextDraw; 212 boolean mFullRedrawNeeded; 213 boolean mNewSurfaceNeeded; 214 boolean mHasHadWindowFocus; 215 boolean mLastWasImTarget; 216 boolean mWindowsAnimating; 217 boolean mDrawDuringWindowsAnimating; 218 boolean mIsDrawing; 219 int mLastSystemUiVisibility; 220 int mClientWindowLayoutFlags; 221 boolean mLastOverscanRequested; 222 223 // Pool of queued input events. 224 private static final int MAX_QUEUED_INPUT_EVENT_POOL_SIZE = 10; 225 private QueuedInputEvent mQueuedInputEventPool; 226 private int mQueuedInputEventPoolSize; 227 228 /* Input event queue. 229 * Pending input events are input events waiting to be delivered to the input stages 230 * and handled by the application. 231 */ 232 QueuedInputEvent mPendingInputEventHead; 233 QueuedInputEvent mPendingInputEventTail; 234 int mPendingInputEventCount; 235 boolean mProcessInputEventsScheduled; 236 boolean mUnbufferedInputDispatch; 237 String mPendingInputEventQueueLengthCounterName = "pq"; 238 239 InputStage mFirstInputStage; 240 InputStage mFirstPostImeInputStage; 241 InputStage mSyntheticInputStage; 242 243 boolean mWindowAttributesChanged = false; 244 int mWindowAttributesChangesFlag = 0; 245 246 // These can be accessed by any thread, must be protected with a lock. 247 // Surface can never be reassigned or cleared (use Surface.clear()). 248 final Surface mSurface = new Surface(); 249 250 boolean mAdded; 251 boolean mAddedTouchMode; 252 253 final DisplayAdjustments mDisplayAdjustments; 254 255 // These are accessed by multiple threads. 256 final Rect mWinFrame; // frame given by window manager. 257 258 final Rect mPendingOverscanInsets = new Rect(); 259 final Rect mPendingVisibleInsets = new Rect(); 260 final Rect mPendingStableInsets = new Rect(); 261 final Rect mPendingContentInsets = new Rect(); 262 final ViewTreeObserver.InternalInsetsInfo mLastGivenInsets 263 = new ViewTreeObserver.InternalInsetsInfo(); 264 265 final Rect mDispatchContentInsets = new Rect(); 266 final Rect mDispatchStableInsets = new Rect(); 267 268 final Configuration mLastConfiguration = new Configuration(); 269 final Configuration mPendingConfiguration = new Configuration(); 270 271 boolean mScrollMayChange; 272 int mSoftInputMode; 273 WeakReference<View> mLastScrolledFocus; 274 int mScrollY; 275 int mCurScrollY; 276 Scroller mScroller; 277 HardwareLayer mResizeBuffer; 278 long mResizeBufferStartTime; 279 int mResizeBufferDuration; 280 // Used to block the creation of the ResizeBuffer due to invalidations in 281 // the previous DisplayList tree that must prevent re-execution. 282 // Currently this means a functor was detached. 283 boolean mBlockResizeBuffer; 284 static final Interpolator mResizeInterpolator = new AccelerateDecelerateInterpolator(); 285 private ArrayList<LayoutTransition> mPendingTransitions; 286 287 final ViewConfiguration mViewConfiguration; 288 289 /* Drag/drop */ 290 ClipDescription mDragDescription; 291 View mCurrentDragView; 292 volatile Object mLocalDragState; 293 final PointF mDragPoint = new PointF(); 294 final PointF mLastTouchPoint = new PointF(); 295 296 private boolean mProfileRendering; 297 private Choreographer.FrameCallback mRenderProfiler; 298 private boolean mRenderProfilingEnabled; 299 300 private boolean mMediaDisabled; 301 302 // Variables to track frames per second, enabled via DEBUG_FPS flag 303 private long mFpsStartTime = -1; 304 private long mFpsPrevTime = -1; 305 private int mFpsNumFrames; 306 307 /** 308 * see {@link #playSoundEffect(int)} 309 */ 310 AudioManager mAudioManager; 311 312 final AccessibilityManager mAccessibilityManager; 313 314 AccessibilityInteractionController mAccessibilityInteractionController; 315 316 AccessibilityInteractionConnectionManager mAccessibilityInteractionConnectionManager; 317 HighContrastTextManager mHighContrastTextManager; 318 319 SendWindowContentChangedAccessibilityEvent mSendWindowContentChangedAccessibilityEvent; 320 321 HashSet<View> mTempHashSet; 322 323 private final int mDensity; 324 private final int mNoncompatDensity; 325 326 private boolean mInLayout = false; 327 ArrayList<View> mLayoutRequesters = new ArrayList<View>(); 328 boolean mHandlingLayoutInLayoutRequest = false; 329 330 private int mViewLayoutDirectionInitial; 331 332 /** Set to true once doDie() has been called. */ 333 private boolean mRemoved; 334 335 private boolean mIsEmulator; 336 private boolean mIsCircularEmulator; 337 private final boolean mWindowIsRound; 338 339 /** 340 * Consistency verifier for debugging purposes. 341 */ 342 protected final InputEventConsistencyVerifier mInputEventConsistencyVerifier = 343 InputEventConsistencyVerifier.isInstrumentationEnabled() ? 344 new InputEventConsistencyVerifier(this, 0) : null; 345 346 static final class SystemUiVisibilityInfo { 347 int seq; 348 int globalVisibility; 349 int localValue; 350 int localChanges; 351 } 352 353 public ViewRootImpl(Context context, Display display) { 354 mContext = context; 355 mWindowSession = WindowManagerGlobal.getWindowSession(); 356 mDisplay = display; 357 mBasePackageName = context.getBasePackageName(); 358 359 mDisplayAdjustments = display.getDisplayAdjustments(); 360 361 mThread = Thread.currentThread(); 362 mLocation = new WindowLeaked(null); 363 mLocation.fillInStackTrace(); 364 mWidth = -1; 365 mHeight = -1; 366 mDirty = new Rect(); 367 mTempRect = new Rect(); 368 mVisRect = new Rect(); 369 mWinFrame = new Rect(); 370 mWindow = new W(this); 371 mTargetSdkVersion = context.getApplicationInfo().targetSdkVersion; 372 mViewVisibility = View.GONE; 373 mTransparentRegion = new Region(); 374 mPreviousTransparentRegion = new Region(); 375 mFirst = true; // true for the first time the view is added 376 mAdded = false; 377 mAttachInfo = new View.AttachInfo(mWindowSession, mWindow, display, this, mHandler, this); 378 mAccessibilityManager = AccessibilityManager.getInstance(context); 379 mAccessibilityInteractionConnectionManager = 380 new AccessibilityInteractionConnectionManager(); 381 mAccessibilityManager.addAccessibilityStateChangeListener( 382 mAccessibilityInteractionConnectionManager); 383 mHighContrastTextManager = new HighContrastTextManager(); 384 mAccessibilityManager.addHighTextContrastStateChangeListener( 385 mHighContrastTextManager); 386 mViewConfiguration = ViewConfiguration.get(context); 387 mDensity = context.getResources().getDisplayMetrics().densityDpi; 388 mNoncompatDensity = context.getResources().getDisplayMetrics().noncompatDensityDpi; 389 mFallbackEventHandler = PolicyManager.makeNewFallbackEventHandler(context); 390 mChoreographer = Choreographer.getInstance(); 391 mDisplayManager = (DisplayManager)context.getSystemService(Context.DISPLAY_SERVICE); 392 loadSystemProperties(); 393 mWindowIsRound = context.getResources().getBoolean( 394 com.android.internal.R.bool.config_windowIsRound); 395 } 396 397 public static void addFirstDrawHandler(Runnable callback) { 398 synchronized (sFirstDrawHandlers) { 399 if (!sFirstDrawComplete) { 400 sFirstDrawHandlers.add(callback); 401 } 402 } 403 } 404 405 public static void addConfigCallback(ComponentCallbacks callback) { 406 synchronized (sConfigCallbacks) { 407 sConfigCallbacks.add(callback); 408 } 409 } 410 411 // FIXME for perf testing only 412 private boolean mProfile = false; 413 414 /** 415 * Call this to profile the next traversal call. 416 * FIXME for perf testing only. Remove eventually 417 */ 418 public void profile() { 419 mProfile = true; 420 } 421 422 /** 423 * Indicates whether we are in touch mode. Calling this method triggers an IPC 424 * call and should be avoided whenever possible. 425 * 426 * @return True, if the device is in touch mode, false otherwise. 427 * 428 * @hide 429 */ 430 static boolean isInTouchMode() { 431 IWindowSession windowSession = WindowManagerGlobal.peekWindowSession(); 432 if (windowSession != null) { 433 try { 434 return windowSession.getInTouchMode(); 435 } catch (RemoteException e) { 436 } 437 } 438 return false; 439 } 440 441 /** 442 * We have one child 443 */ 444 public void setView(View view, WindowManager.LayoutParams attrs, View panelParentView) { 445 synchronized (this) { 446 if (mView == null) { 447 mView = view; 448 449 mAttachInfo.mDisplayState = mDisplay.getState(); 450 mDisplayManager.registerDisplayListener(mDisplayListener, mHandler); 451 452 mViewLayoutDirectionInitial = mView.getRawLayoutDirection(); 453 mFallbackEventHandler.setView(view); 454 mWindowAttributes.copyFrom(attrs); 455 if (mWindowAttributes.packageName == null) { 456 mWindowAttributes.packageName = mBasePackageName; 457 } 458 attrs = mWindowAttributes; 459 // Keep track of the actual window flags supplied by the client. 460 mClientWindowLayoutFlags = attrs.flags; 461 462 setAccessibilityFocus(null, null); 463 464 if (view instanceof RootViewSurfaceTaker) { 465 mSurfaceHolderCallback = 466 ((RootViewSurfaceTaker)view).willYouTakeTheSurface(); 467 if (mSurfaceHolderCallback != null) { 468 mSurfaceHolder = new TakenSurfaceHolder(); 469 mSurfaceHolder.setFormat(PixelFormat.UNKNOWN); 470 } 471 } 472 473 // Compute surface insets required to draw at specified Z value. 474 // TODO: Use real shadow insets for a constant max Z. 475 final int surfaceInset = (int) Math.ceil(view.getZ() * 2); 476 attrs.surfaceInsets.set(surfaceInset, surfaceInset, surfaceInset, surfaceInset); 477 478 CompatibilityInfo compatibilityInfo = mDisplayAdjustments.getCompatibilityInfo(); 479 mTranslator = compatibilityInfo.getTranslator(); 480 mDisplayAdjustments.setActivityToken(attrs.token); 481 482 // If the application owns the surface, don't enable hardware acceleration 483 if (mSurfaceHolder == null) { 484 enableHardwareAcceleration(attrs); 485 } 486 487 boolean restore = false; 488 if (mTranslator != null) { 489 mSurface.setCompatibilityTranslator(mTranslator); 490 restore = true; 491 attrs.backup(); 492 mTranslator.translateWindowLayout(attrs); 493 } 494 if (DEBUG_LAYOUT) Log.d(TAG, "WindowLayout in setView:" + attrs); 495 496 if (!compatibilityInfo.supportsScreen()) { 497 attrs.privateFlags |= WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 498 mLastInCompatMode = true; 499 } 500 501 mSoftInputMode = attrs.softInputMode; 502 mWindowAttributesChanged = true; 503 mWindowAttributesChangesFlag = WindowManager.LayoutParams.EVERYTHING_CHANGED; 504 mAttachInfo.mRootView = view; 505 mAttachInfo.mScalingRequired = mTranslator != null; 506 mAttachInfo.mApplicationScale = 507 mTranslator == null ? 1.0f : mTranslator.applicationScale; 508 if (panelParentView != null) { 509 mAttachInfo.mPanelParentWindowToken 510 = panelParentView.getApplicationWindowToken(); 511 } 512 mAdded = true; 513 int res; /* = WindowManagerImpl.ADD_OKAY; */ 514 515 // Schedule the first layout -before- adding to the window 516 // manager, to make sure we do the relayout before receiving 517 // any other events from the system. 518 requestLayout(); 519 if ((mWindowAttributes.inputFeatures 520 & WindowManager.LayoutParams.INPUT_FEATURE_NO_INPUT_CHANNEL) == 0) { 521 mInputChannel = new InputChannel(); 522 } 523 try { 524 mOrigWindowType = mWindowAttributes.type; 525 mAttachInfo.mRecomputeGlobalAttributes = true; 526 collectViewAttributes(); 527 res = mWindowSession.addToDisplay(mWindow, mSeq, mWindowAttributes, 528 getHostVisibility(), mDisplay.getDisplayId(), 529 mAttachInfo.mContentInsets, mAttachInfo.mStableInsets, mInputChannel); 530 } catch (RemoteException e) { 531 mAdded = false; 532 mView = null; 533 mAttachInfo.mRootView = null; 534 mInputChannel = null; 535 mFallbackEventHandler.setView(null); 536 unscheduleTraversals(); 537 setAccessibilityFocus(null, null); 538 throw new RuntimeException("Adding window failed", e); 539 } finally { 540 if (restore) { 541 attrs.restore(); 542 } 543 } 544 545 if (mTranslator != null) { 546 mTranslator.translateRectInScreenToAppWindow(mAttachInfo.mContentInsets); 547 } 548 mPendingOverscanInsets.set(0, 0, 0, 0); 549 mPendingContentInsets.set(mAttachInfo.mContentInsets); 550 mPendingStableInsets.set(mAttachInfo.mStableInsets); 551 mPendingVisibleInsets.set(0, 0, 0, 0); 552 if (DEBUG_LAYOUT) Log.v(TAG, "Added window " + mWindow); 553 if (res < WindowManagerGlobal.ADD_OKAY) { 554 mAttachInfo.mRootView = null; 555 mAdded = false; 556 mFallbackEventHandler.setView(null); 557 unscheduleTraversals(); 558 setAccessibilityFocus(null, null); 559 switch (res) { 560 case WindowManagerGlobal.ADD_BAD_APP_TOKEN: 561 case WindowManagerGlobal.ADD_BAD_SUBWINDOW_TOKEN: 562 throw new WindowManager.BadTokenException( 563 "Unable to add window -- token " + attrs.token 564 + " is not valid; is your activity running?"); 565 case WindowManagerGlobal.ADD_NOT_APP_TOKEN: 566 throw new WindowManager.BadTokenException( 567 "Unable to add window -- token " + attrs.token 568 + " is not for an application"); 569 case WindowManagerGlobal.ADD_APP_EXITING: 570 throw new WindowManager.BadTokenException( 571 "Unable to add window -- app for token " + attrs.token 572 + " is exiting"); 573 case WindowManagerGlobal.ADD_DUPLICATE_ADD: 574 throw new WindowManager.BadTokenException( 575 "Unable to add window -- window " + mWindow 576 + " has already been added"); 577 case WindowManagerGlobal.ADD_STARTING_NOT_NEEDED: 578 // Silently ignore -- we would have just removed it 579 // right away, anyway. 580 return; 581 case WindowManagerGlobal.ADD_MULTIPLE_SINGLETON: 582 throw new WindowManager.BadTokenException( 583 "Unable to add window " + mWindow + 584 " -- another window of this type already exists"); 585 case WindowManagerGlobal.ADD_PERMISSION_DENIED: 586 throw new WindowManager.BadTokenException( 587 "Unable to add window " + mWindow + 588 " -- permission denied for this window type"); 589 case WindowManagerGlobal.ADD_INVALID_DISPLAY: 590 throw new WindowManager.InvalidDisplayException( 591 "Unable to add window " + mWindow + 592 " -- the specified display can not be found"); 593 } 594 throw new RuntimeException( 595 "Unable to add window -- unknown error code " + res); 596 } 597 598 if (view instanceof RootViewSurfaceTaker) { 599 mInputQueueCallback = 600 ((RootViewSurfaceTaker)view).willYouTakeTheInputQueue(); 601 } 602 if (mInputChannel != null) { 603 if (mInputQueueCallback != null) { 604 mInputQueue = new InputQueue(); 605 mInputQueueCallback.onInputQueueCreated(mInputQueue); 606 } 607 mInputEventReceiver = new WindowInputEventReceiver(mInputChannel, 608 Looper.myLooper()); 609 } 610 611 view.assignParent(this); 612 mAddedTouchMode = (res & WindowManagerGlobal.ADD_FLAG_IN_TOUCH_MODE) != 0; 613 mAppVisible = (res & WindowManagerGlobal.ADD_FLAG_APP_VISIBLE) != 0; 614 615 if (mAccessibilityManager.isEnabled()) { 616 mAccessibilityInteractionConnectionManager.ensureConnection(); 617 } 618 619 if (view.getImportantForAccessibility() == View.IMPORTANT_FOR_ACCESSIBILITY_AUTO) { 620 view.setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_YES); 621 } 622 623 // Set up the input pipeline. 624 CharSequence counterSuffix = attrs.getTitle(); 625 mSyntheticInputStage = new SyntheticInputStage(); 626 InputStage viewPostImeStage = new ViewPostImeInputStage(mSyntheticInputStage); 627 InputStage nativePostImeStage = new NativePostImeInputStage(viewPostImeStage, 628 "aq:native-post-ime:" + counterSuffix); 629 InputStage earlyPostImeStage = new EarlyPostImeInputStage(nativePostImeStage); 630 InputStage imeStage = new ImeInputStage(earlyPostImeStage, 631 "aq:ime:" + counterSuffix); 632 InputStage viewPreImeStage = new ViewPreImeInputStage(imeStage); 633 InputStage nativePreImeStage = new NativePreImeInputStage(viewPreImeStage, 634 "aq:native-pre-ime:" + counterSuffix); 635 636 mFirstInputStage = nativePreImeStage; 637 mFirstPostImeInputStage = earlyPostImeStage; 638 mPendingInputEventQueueLengthCounterName = "aq:pending:" + counterSuffix; 639 } 640 } 641 } 642 643 /** Whether the window is in local focus mode or not */ 644 private boolean isInLocalFocusMode() { 645 return (mWindowAttributes.flags & WindowManager.LayoutParams.FLAG_LOCAL_FOCUS_MODE) != 0; 646 } 647 648 void destroyHardwareResources() { 649 if (mAttachInfo.mHardwareRenderer != null) { 650 mAttachInfo.mHardwareRenderer.destroyHardwareResources(mView); 651 mAttachInfo.mHardwareRenderer.destroy(); 652 } 653 } 654 655 public void detachFunctor(long functor) { 656 // TODO: Make the resize buffer some other way to not need this block 657 mBlockResizeBuffer = true; 658 if (mAttachInfo.mHardwareRenderer != null) { 659 // Fence so that any pending invokeFunctor() messages will be processed 660 // before we return from detachFunctor. 661 mAttachInfo.mHardwareRenderer.stopDrawing(); 662 } 663 } 664 665 /** 666 * Schedules the functor for execution in either kModeProcess or 667 * kModeProcessNoContext, depending on whether or not there is an EGLContext. 668 * 669 * @param functor The native functor to invoke 670 * @param waitForCompletion If true, this will not return until the functor 671 * has invoked. If false, the functor may be invoked 672 * asynchronously. 673 */ 674 public void invokeFunctor(long functor, boolean waitForCompletion) { 675 ThreadedRenderer.invokeFunctor(functor, waitForCompletion); 676 } 677 678 public void registerAnimatingRenderNode(RenderNode animator) { 679 if (mAttachInfo.mHardwareRenderer != null) { 680 mAttachInfo.mHardwareRenderer.registerAnimatingRenderNode(animator); 681 } else { 682 if (mAttachInfo.mPendingAnimatingRenderNodes == null) { 683 mAttachInfo.mPendingAnimatingRenderNodes = new ArrayList<RenderNode>(); 684 } 685 mAttachInfo.mPendingAnimatingRenderNodes.add(animator); 686 } 687 } 688 689 private void enableHardwareAcceleration(WindowManager.LayoutParams attrs) { 690 mAttachInfo.mHardwareAccelerated = false; 691 mAttachInfo.mHardwareAccelerationRequested = false; 692 693 // Don't enable hardware acceleration when the application is in compatibility mode 694 if (mTranslator != null) return; 695 696 // Try to enable hardware acceleration if requested 697 final boolean hardwareAccelerated = 698 (attrs.flags & WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED) != 0; 699 700 if (hardwareAccelerated) { 701 if (!HardwareRenderer.isAvailable()) { 702 return; 703 } 704 705 // Persistent processes (including the system) should not do 706 // accelerated rendering on low-end devices. In that case, 707 // sRendererDisabled will be set. In addition, the system process 708 // itself should never do accelerated rendering. In that case, both 709 // sRendererDisabled and sSystemRendererDisabled are set. When 710 // sSystemRendererDisabled is set, PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED 711 // can be used by code on the system process to escape that and enable 712 // HW accelerated drawing. (This is basically for the lock screen.) 713 714 final boolean fakeHwAccelerated = (attrs.privateFlags & 715 WindowManager.LayoutParams.PRIVATE_FLAG_FAKE_HARDWARE_ACCELERATED) != 0; 716 final boolean forceHwAccelerated = (attrs.privateFlags & 717 WindowManager.LayoutParams.PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED) != 0; 718 719 if (fakeHwAccelerated) { 720 // This is exclusively for the preview windows the window manager 721 // shows for launching applications, so they will look more like 722 // the app being launched. 723 mAttachInfo.mHardwareAccelerationRequested = true; 724 } else if (!HardwareRenderer.sRendererDisabled 725 || (HardwareRenderer.sSystemRendererDisabled && forceHwAccelerated)) { 726 if (mAttachInfo.mHardwareRenderer != null) { 727 mAttachInfo.mHardwareRenderer.destroy(); 728 } 729 730 final Rect insets = attrs.surfaceInsets; 731 final boolean hasSurfaceInsets = insets.left != 0 || insets.right != 0 732 || insets.top != 0 || insets.bottom != 0; 733 final boolean translucent = attrs.format != PixelFormat.OPAQUE || hasSurfaceInsets; 734 mAttachInfo.mHardwareRenderer = HardwareRenderer.create(mContext, translucent); 735 if (mAttachInfo.mHardwareRenderer != null) { 736 mAttachInfo.mHardwareRenderer.setName(attrs.getTitle().toString()); 737 mAttachInfo.mHardwareAccelerated = 738 mAttachInfo.mHardwareAccelerationRequested = true; 739 } 740 } 741 } 742 } 743 744 public View getView() { 745 return mView; 746 } 747 748 final WindowLeaked getLocation() { 749 return mLocation; 750 } 751 752 void setLayoutParams(WindowManager.LayoutParams attrs, boolean newView) { 753 synchronized (this) { 754 final int oldInsetLeft = mWindowAttributes.surfaceInsets.left; 755 final int oldInsetTop = mWindowAttributes.surfaceInsets.top; 756 final int oldInsetRight = mWindowAttributes.surfaceInsets.right; 757 final int oldInsetBottom = mWindowAttributes.surfaceInsets.bottom; 758 final int oldSoftInputMode = mWindowAttributes.softInputMode; 759 760 // Keep track of the actual window flags supplied by the client. 761 mClientWindowLayoutFlags = attrs.flags; 762 763 // Preserve compatible window flag if exists. 764 final int compatibleWindowFlag = mWindowAttributes.privateFlags 765 & WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 766 767 // Transfer over system UI visibility values as they carry current state. 768 attrs.systemUiVisibility = mWindowAttributes.systemUiVisibility; 769 attrs.subtreeSystemUiVisibility = mWindowAttributes.subtreeSystemUiVisibility; 770 771 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 // Restore old surface insets. 783 mWindowAttributes.surfaceInsets.set( 784 oldInsetLeft, oldInsetTop, oldInsetRight, oldInsetBottom); 785 786 applyKeepScreenOnFlag(mWindowAttributes); 787 788 if (newView) { 789 mSoftInputMode = attrs.softInputMode; 790 requestLayout(); 791 } 792 793 // Don't lose the mode we last auto-computed. 794 if ((attrs.softInputMode & WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 795 == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 796 mWindowAttributes.softInputMode = (mWindowAttributes.softInputMode 797 & ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 798 | (oldSoftInputMode & WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST); 799 } 800 801 mWindowAttributesChanged = true; 802 scheduleTraversals(); 803 } 804 } 805 806 void handleAppVisibility(boolean visible) { 807 if (mAppVisible != visible) { 808 mAppVisible = visible; 809 scheduleTraversals(); 810 if (!mAppVisible) { 811 WindowManagerGlobal.trimForeground(); 812 } 813 } 814 } 815 816 void handleGetNewSurface() { 817 mNewSurfaceNeeded = true; 818 mFullRedrawNeeded = true; 819 scheduleTraversals(); 820 } 821 822 private final DisplayListener mDisplayListener = new DisplayListener() { 823 @Override 824 public void onDisplayChanged(int displayId) { 825 if (mView != null && mDisplay.getDisplayId() == displayId) { 826 final int oldDisplayState = mAttachInfo.mDisplayState; 827 final int newDisplayState = mDisplay.getState(); 828 if (oldDisplayState != newDisplayState) { 829 mAttachInfo.mDisplayState = newDisplayState; 830 if (oldDisplayState != Display.STATE_UNKNOWN) { 831 final int oldScreenState = toViewScreenState(oldDisplayState); 832 final int newScreenState = toViewScreenState(newDisplayState); 833 if (oldScreenState != newScreenState) { 834 mView.dispatchScreenStateChanged(newScreenState); 835 } 836 if (oldDisplayState == Display.STATE_OFF) { 837 // Draw was suppressed so we need to for it to happen here. 838 mFullRedrawNeeded = true; 839 scheduleTraversals(); 840 } 841 } 842 } 843 } 844 } 845 846 @Override 847 public void onDisplayRemoved(int displayId) { 848 } 849 850 @Override 851 public void onDisplayAdded(int displayId) { 852 } 853 854 private int toViewScreenState(int displayState) { 855 return displayState == Display.STATE_OFF ? 856 View.SCREEN_STATE_OFF : View.SCREEN_STATE_ON; 857 } 858 }; 859 860 @Override 861 public void requestFitSystemWindows() { 862 checkThread(); 863 mApplyInsetsRequested = true; 864 scheduleTraversals(); 865 } 866 867 @Override 868 public void requestLayout() { 869 if (!mHandlingLayoutInLayoutRequest) { 870 checkThread(); 871 mLayoutRequested = true; 872 scheduleTraversals(); 873 } 874 } 875 876 @Override 877 public boolean isLayoutRequested() { 878 return mLayoutRequested; 879 } 880 881 void invalidate() { 882 mDirty.set(0, 0, mWidth, mHeight); 883 if (!mWillDrawSoon) { 884 scheduleTraversals(); 885 } 886 } 887 888 void invalidateWorld(View view) { 889 view.invalidate(); 890 if (view instanceof ViewGroup) { 891 ViewGroup parent = (ViewGroup) view; 892 for (int i = 0; i < parent.getChildCount(); i++) { 893 invalidateWorld(parent.getChildAt(i)); 894 } 895 } 896 } 897 898 @Override 899 public void invalidateChild(View child, Rect dirty) { 900 invalidateChildInParent(null, dirty); 901 } 902 903 @Override 904 public ViewParent invalidateChildInParent(int[] location, Rect dirty) { 905 checkThread(); 906 if (DEBUG_DRAW) Log.v(TAG, "Invalidate child: " + dirty); 907 908 if (dirty == null) { 909 invalidate(); 910 return null; 911 } else if (dirty.isEmpty() && !mIsAnimating) { 912 return null; 913 } 914 915 if (mCurScrollY != 0 || mTranslator != null) { 916 mTempRect.set(dirty); 917 dirty = mTempRect; 918 if (mCurScrollY != 0) { 919 dirty.offset(0, -mCurScrollY); 920 } 921 if (mTranslator != null) { 922 mTranslator.translateRectInAppWindowToScreen(dirty); 923 } 924 if (mAttachInfo.mScalingRequired) { 925 dirty.inset(-1, -1); 926 } 927 } 928 929 final Rect localDirty = mDirty; 930 if (!localDirty.isEmpty() && !localDirty.contains(dirty)) { 931 mAttachInfo.mSetIgnoreDirtyState = true; 932 mAttachInfo.mIgnoreDirtyState = true; 933 } 934 935 // Add the new dirty rect to the current one 936 localDirty.union(dirty.left, dirty.top, dirty.right, dirty.bottom); 937 // Intersect with the bounds of the window to skip 938 // updates that lie outside of the visible region 939 final float appScale = mAttachInfo.mApplicationScale; 940 final boolean intersected = localDirty.intersect(0, 0, 941 (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 942 if (!intersected) { 943 localDirty.setEmpty(); 944 } 945 if (!mWillDrawSoon && (intersected || mIsAnimating)) { 946 scheduleTraversals(); 947 } 948 949 return null; 950 } 951 952 void setStopped(boolean stopped) { 953 if (mStopped != stopped) { 954 mStopped = stopped; 955 if (!stopped) { 956 scheduleTraversals(); 957 } 958 } 959 } 960 961 @Override 962 public ViewParent getParent() { 963 return null; 964 } 965 966 @Override 967 public boolean getChildVisibleRect(View child, Rect r, android.graphics.Point offset) { 968 if (child != mView) { 969 throw new RuntimeException("child is not mine, honest!"); 970 } 971 // Note: don't apply scroll offset, because we want to know its 972 // visibility in the virtual canvas being given to the view hierarchy. 973 return r.intersect(0, 0, mWidth, mHeight); 974 } 975 976 @Override 977 public void bringChildToFront(View child) { 978 } 979 980 int getHostVisibility() { 981 return mAppVisible ? mView.getVisibility() : View.GONE; 982 } 983 984 void disposeResizeBuffer() { 985 if (mResizeBuffer != null) { 986 mResizeBuffer.destroy(); 987 mResizeBuffer = null; 988 } 989 } 990 991 /** 992 * Add LayoutTransition to the list of transitions to be started in the next traversal. 993 * This list will be cleared after the transitions on the list are start()'ed. These 994 * transitionsa re added by LayoutTransition itself when it sets up animations. The setup 995 * happens during the layout phase of traversal, which we want to complete before any of the 996 * animations are started (because those animations may side-effect properties that layout 997 * depends upon, like the bounding rectangles of the affected views). So we add the transition 998 * to the list and it is started just prior to starting the drawing phase of traversal. 999 * 1000 * @param transition The LayoutTransition to be started on the next traversal. 1001 * 1002 * @hide 1003 */ 1004 public void requestTransitionStart(LayoutTransition transition) { 1005 if (mPendingTransitions == null || !mPendingTransitions.contains(transition)) { 1006 if (mPendingTransitions == null) { 1007 mPendingTransitions = new ArrayList<LayoutTransition>(); 1008 } 1009 mPendingTransitions.add(transition); 1010 } 1011 } 1012 1013 /** 1014 * Notifies the HardwareRenderer that a new frame will be coming soon. 1015 * Currently only {@link ThreadedRenderer} cares about this, and uses 1016 * this knowledge to adjust the scheduling of off-thread animations 1017 */ 1018 void notifyRendererOfFramePending() { 1019 if (mAttachInfo.mHardwareRenderer != null) { 1020 mAttachInfo.mHardwareRenderer.notifyFramePending(); 1021 } 1022 } 1023 1024 void scheduleTraversals() { 1025 if (!mTraversalScheduled) { 1026 mTraversalScheduled = true; 1027 mTraversalBarrier = mHandler.getLooper().postSyncBarrier(); 1028 mChoreographer.postCallback( 1029 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 1030 if (!mUnbufferedInputDispatch) { 1031 scheduleConsumeBatchedInput(); 1032 } 1033 notifyRendererOfFramePending(); 1034 } 1035 } 1036 1037 void unscheduleTraversals() { 1038 if (mTraversalScheduled) { 1039 mTraversalScheduled = false; 1040 mHandler.getLooper().removeSyncBarrier(mTraversalBarrier); 1041 mChoreographer.removeCallbacks( 1042 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 1043 } 1044 } 1045 1046 void doTraversal() { 1047 if (mTraversalScheduled) { 1048 mTraversalScheduled = false; 1049 mHandler.getLooper().removeSyncBarrier(mTraversalBarrier); 1050 1051 if (mProfile) { 1052 Debug.startMethodTracing("ViewAncestor"); 1053 } 1054 1055 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "performTraversals"); 1056 try { 1057 performTraversals(); 1058 } finally { 1059 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 1060 } 1061 1062 if (mProfile) { 1063 Debug.stopMethodTracing(); 1064 mProfile = false; 1065 } 1066 } 1067 } 1068 1069 private void applyKeepScreenOnFlag(WindowManager.LayoutParams params) { 1070 // Update window's global keep screen on flag: if a view has requested 1071 // that the screen be kept on, then it is always set; otherwise, it is 1072 // set to whatever the client last requested for the global state. 1073 if (mAttachInfo.mKeepScreenOn) { 1074 params.flags |= WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON; 1075 } else { 1076 params.flags = (params.flags&~WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON) 1077 | (mClientWindowLayoutFlags&WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 1078 } 1079 } 1080 1081 private boolean collectViewAttributes() { 1082 if (mAttachInfo.mRecomputeGlobalAttributes) { 1083 //Log.i(TAG, "Computing view hierarchy attributes!"); 1084 mAttachInfo.mRecomputeGlobalAttributes = false; 1085 boolean oldScreenOn = mAttachInfo.mKeepScreenOn; 1086 mAttachInfo.mKeepScreenOn = false; 1087 mAttachInfo.mSystemUiVisibility = 0; 1088 mAttachInfo.mHasSystemUiListeners = false; 1089 mView.dispatchCollectViewAttributes(mAttachInfo, 0); 1090 mAttachInfo.mSystemUiVisibility &= ~mAttachInfo.mDisabledSystemUiVisibility; 1091 WindowManager.LayoutParams params = mWindowAttributes; 1092 mAttachInfo.mSystemUiVisibility |= getImpliedSystemUiVisibility(params); 1093 if (mAttachInfo.mKeepScreenOn != oldScreenOn 1094 || mAttachInfo.mSystemUiVisibility != params.subtreeSystemUiVisibility 1095 || mAttachInfo.mHasSystemUiListeners != params.hasSystemUiListeners) { 1096 applyKeepScreenOnFlag(params); 1097 params.subtreeSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1098 params.hasSystemUiListeners = mAttachInfo.mHasSystemUiListeners; 1099 mView.dispatchWindowSystemUiVisiblityChanged(mAttachInfo.mSystemUiVisibility); 1100 return true; 1101 } 1102 } 1103 return false; 1104 } 1105 1106 private int getImpliedSystemUiVisibility(WindowManager.LayoutParams params) { 1107 int vis = 0; 1108 // Translucent decor window flags imply stable system ui visibility. 1109 if ((params.flags & WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS) != 0) { 1110 vis |= View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN; 1111 } 1112 if ((params.flags & WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION) != 0) { 1113 vis |= View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION; 1114 } 1115 return vis; 1116 } 1117 1118 private boolean measureHierarchy(final View host, final WindowManager.LayoutParams lp, 1119 final Resources res, final int desiredWindowWidth, final int desiredWindowHeight) { 1120 int childWidthMeasureSpec; 1121 int childHeightMeasureSpec; 1122 boolean windowSizeMayChange = false; 1123 1124 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) Log.v(TAG, 1125 "Measuring " + host + " in display " + desiredWindowWidth 1126 + "x" + desiredWindowHeight + "..."); 1127 1128 boolean goodMeasure = false; 1129 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT) { 1130 // On large screens, we don't want to allow dialogs to just 1131 // stretch to fill the entire width of the screen to display 1132 // one line of text. First try doing the layout at a smaller 1133 // size to see if it will fit. 1134 final DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1135 res.getValue(com.android.internal.R.dimen.config_prefDialogWidth, mTmpValue, true); 1136 int baseSize = 0; 1137 if (mTmpValue.type == TypedValue.TYPE_DIMENSION) { 1138 baseSize = (int)mTmpValue.getDimension(packageMetrics); 1139 } 1140 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": baseSize=" + baseSize); 1141 if (baseSize != 0 && desiredWindowWidth > baseSize) { 1142 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1143 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1144 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1145 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": measured (" 1146 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1147 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1148 goodMeasure = true; 1149 } else { 1150 // Didn't fit in that size... try expanding a bit. 1151 baseSize = (baseSize+desiredWindowWidth)/2; 1152 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": next baseSize=" 1153 + baseSize); 1154 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1155 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1156 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": measured (" 1157 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1158 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1159 if (DEBUG_DIALOG) Log.v(TAG, "Good!"); 1160 goodMeasure = true; 1161 } 1162 } 1163 } 1164 } 1165 1166 if (!goodMeasure) { 1167 childWidthMeasureSpec = getRootMeasureSpec(desiredWindowWidth, lp.width); 1168 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1169 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1170 if (mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) { 1171 windowSizeMayChange = true; 1172 } 1173 } 1174 1175 if (DBG) { 1176 System.out.println("======================================"); 1177 System.out.println("performTraversals -- after measure"); 1178 host.debug(); 1179 } 1180 1181 return windowSizeMayChange; 1182 } 1183 1184 /** 1185 * Modifies the input matrix such that it maps view-local coordinates to 1186 * on-screen coordinates. 1187 * 1188 * @param m input matrix to modify 1189 */ 1190 void transformMatrixToGlobal(Matrix m) { 1191 m.preTranslate(mAttachInfo.mWindowLeft, mAttachInfo.mWindowTop); 1192 } 1193 1194 /** 1195 * Modifies the input matrix such that it maps on-screen coordinates to 1196 * view-local coordinates. 1197 * 1198 * @param m input matrix to modify 1199 */ 1200 void transformMatrixToLocal(Matrix m) { 1201 m.postTranslate(-mAttachInfo.mWindowLeft, -mAttachInfo.mWindowTop); 1202 } 1203 1204 void dispatchApplyInsets(View host) { 1205 mDispatchContentInsets.set(mAttachInfo.mContentInsets); 1206 mDispatchStableInsets.set(mAttachInfo.mStableInsets); 1207 final boolean isRound = (mIsEmulator && mIsCircularEmulator) || mWindowIsRound; 1208 host.dispatchApplyWindowInsets(new WindowInsets( 1209 mDispatchContentInsets, null /* windowDecorInsets */, 1210 mDispatchStableInsets, isRound)); 1211 } 1212 1213 private void performTraversals() { 1214 // cache mView since it is used so much below... 1215 final View host = mView; 1216 1217 if (DBG) { 1218 System.out.println("======================================"); 1219 System.out.println("performTraversals"); 1220 host.debug(); 1221 } 1222 1223 if (host == null || !mAdded) 1224 return; 1225 1226 mIsInTraversal = true; 1227 mWillDrawSoon = true; 1228 boolean windowSizeMayChange = false; 1229 boolean newSurface = false; 1230 boolean surfaceChanged = false; 1231 WindowManager.LayoutParams lp = mWindowAttributes; 1232 1233 int desiredWindowWidth; 1234 int desiredWindowHeight; 1235 1236 final int viewVisibility = getHostVisibility(); 1237 boolean viewVisibilityChanged = mViewVisibility != viewVisibility 1238 || mNewSurfaceNeeded; 1239 1240 WindowManager.LayoutParams params = null; 1241 if (mWindowAttributesChanged) { 1242 mWindowAttributesChanged = false; 1243 surfaceChanged = true; 1244 params = lp; 1245 } 1246 CompatibilityInfo compatibilityInfo = mDisplayAdjustments.getCompatibilityInfo(); 1247 if (compatibilityInfo.supportsScreen() == mLastInCompatMode) { 1248 params = lp; 1249 mFullRedrawNeeded = true; 1250 mLayoutRequested = true; 1251 if (mLastInCompatMode) { 1252 params.privateFlags &= ~WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 1253 mLastInCompatMode = false; 1254 } else { 1255 params.privateFlags |= WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 1256 mLastInCompatMode = true; 1257 } 1258 } 1259 1260 mWindowAttributesChangesFlag = 0; 1261 1262 Rect frame = mWinFrame; 1263 if (mFirst) { 1264 mFullRedrawNeeded = true; 1265 mLayoutRequested = true; 1266 1267 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL 1268 || lp.type == WindowManager.LayoutParams.TYPE_INPUT_METHOD) { 1269 // NOTE -- system code, won't try to do compat mode. 1270 Point size = new Point(); 1271 mDisplay.getRealSize(size); 1272 desiredWindowWidth = size.x; 1273 desiredWindowHeight = size.y; 1274 } else { 1275 DisplayMetrics packageMetrics = 1276 mView.getContext().getResources().getDisplayMetrics(); 1277 desiredWindowWidth = packageMetrics.widthPixels; 1278 desiredWindowHeight = packageMetrics.heightPixels; 1279 } 1280 1281 // We used to use the following condition to choose 32 bits drawing caches: 1282 // PixelFormat.hasAlpha(lp.format) || lp.format == PixelFormat.RGBX_8888 1283 // However, windows are now always 32 bits by default, so choose 32 bits 1284 mAttachInfo.mUse32BitDrawingCache = true; 1285 mAttachInfo.mHasWindowFocus = false; 1286 mAttachInfo.mWindowVisibility = viewVisibility; 1287 mAttachInfo.mRecomputeGlobalAttributes = false; 1288 viewVisibilityChanged = false; 1289 mLastConfiguration.setTo(host.getResources().getConfiguration()); 1290 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1291 // Set the layout direction if it has not been set before (inherit is the default) 1292 if (mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 1293 host.setLayoutDirection(mLastConfiguration.getLayoutDirection()); 1294 } 1295 host.dispatchAttachedToWindow(mAttachInfo, 0); 1296 mAttachInfo.mTreeObserver.dispatchOnWindowAttachedChange(true); 1297 dispatchApplyInsets(host); 1298 //Log.i(TAG, "Screen on initialized: " + attachInfo.mKeepScreenOn); 1299 1300 } else { 1301 desiredWindowWidth = frame.width(); 1302 desiredWindowHeight = frame.height(); 1303 if (desiredWindowWidth != mWidth || desiredWindowHeight != mHeight) { 1304 if (DEBUG_ORIENTATION) Log.v(TAG, 1305 "View " + host + " resized to: " + frame); 1306 mFullRedrawNeeded = true; 1307 mLayoutRequested = true; 1308 windowSizeMayChange = true; 1309 } 1310 } 1311 1312 if (viewVisibilityChanged) { 1313 mAttachInfo.mWindowVisibility = viewVisibility; 1314 host.dispatchWindowVisibilityChanged(viewVisibility); 1315 if (viewVisibility != View.VISIBLE || mNewSurfaceNeeded) { 1316 destroyHardwareResources(); 1317 } 1318 if (viewVisibility == View.GONE) { 1319 // After making a window gone, we will count it as being 1320 // shown for the first time the next time it gets focus. 1321 mHasHadWindowFocus = false; 1322 } 1323 } 1324 1325 // Execute enqueued actions on every traversal in case a detached view enqueued an action 1326 getRunQueue().executeActions(mAttachInfo.mHandler); 1327 1328 boolean insetsChanged = false; 1329 1330 boolean layoutRequested = mLayoutRequested && !mStopped; 1331 if (layoutRequested) { 1332 1333 final Resources res = mView.getContext().getResources(); 1334 1335 if (mFirst) { 1336 // make sure touch mode code executes by setting cached value 1337 // to opposite of the added touch mode. 1338 mAttachInfo.mInTouchMode = !mAddedTouchMode; 1339 ensureTouchModeLocally(mAddedTouchMode); 1340 } else { 1341 if (!mPendingOverscanInsets.equals(mAttachInfo.mOverscanInsets)) { 1342 insetsChanged = true; 1343 } 1344 if (!mPendingContentInsets.equals(mAttachInfo.mContentInsets)) { 1345 insetsChanged = true; 1346 } 1347 if (!mPendingStableInsets.equals(mAttachInfo.mStableInsets)) { 1348 insetsChanged = true; 1349 } 1350 if (!mPendingVisibleInsets.equals(mAttachInfo.mVisibleInsets)) { 1351 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1352 if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: " 1353 + mAttachInfo.mVisibleInsets); 1354 } 1355 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT 1356 || lp.height == ViewGroup.LayoutParams.WRAP_CONTENT) { 1357 windowSizeMayChange = true; 1358 1359 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL 1360 || lp.type == WindowManager.LayoutParams.TYPE_INPUT_METHOD) { 1361 // NOTE -- system code, won't try to do compat mode. 1362 Point size = new Point(); 1363 mDisplay.getRealSize(size); 1364 desiredWindowWidth = size.x; 1365 desiredWindowHeight = size.y; 1366 } else { 1367 DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1368 desiredWindowWidth = packageMetrics.widthPixels; 1369 desiredWindowHeight = packageMetrics.heightPixels; 1370 } 1371 } 1372 } 1373 1374 // Ask host how big it wants to be 1375 windowSizeMayChange |= measureHierarchy(host, lp, res, 1376 desiredWindowWidth, desiredWindowHeight); 1377 } 1378 1379 if (collectViewAttributes()) { 1380 params = lp; 1381 } 1382 if (mAttachInfo.mForceReportNewAttributes) { 1383 mAttachInfo.mForceReportNewAttributes = false; 1384 params = lp; 1385 } 1386 1387 if (mFirst || mAttachInfo.mViewVisibilityChanged) { 1388 mAttachInfo.mViewVisibilityChanged = false; 1389 int resizeMode = mSoftInputMode & 1390 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST; 1391 // If we are in auto resize mode, then we need to determine 1392 // what mode to use now. 1393 if (resizeMode == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 1394 final int N = mAttachInfo.mScrollContainers.size(); 1395 for (int i=0; i<N; i++) { 1396 if (mAttachInfo.mScrollContainers.get(i).isShown()) { 1397 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE; 1398 } 1399 } 1400 if (resizeMode == 0) { 1401 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_PAN; 1402 } 1403 if ((lp.softInputMode & 1404 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) != resizeMode) { 1405 lp.softInputMode = (lp.softInputMode & 1406 ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) | 1407 resizeMode; 1408 params = lp; 1409 } 1410 } 1411 } 1412 1413 if (params != null) { 1414 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 1415 if (!PixelFormat.formatHasAlpha(params.format)) { 1416 params.format = PixelFormat.TRANSLUCENT; 1417 } 1418 } 1419 mAttachInfo.mOverscanRequested = (params.flags 1420 & WindowManager.LayoutParams.FLAG_LAYOUT_IN_OVERSCAN) != 0; 1421 } 1422 1423 if (mApplyInsetsRequested) { 1424 mApplyInsetsRequested = false; 1425 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1426 dispatchApplyInsets(host); 1427 if (mLayoutRequested) { 1428 // Short-circuit catching a new layout request here, so 1429 // we don't need to go through two layout passes when things 1430 // change due to fitting system windows, which can happen a lot. 1431 windowSizeMayChange |= measureHierarchy(host, lp, 1432 mView.getContext().getResources(), 1433 desiredWindowWidth, desiredWindowHeight); 1434 } 1435 } 1436 1437 if (layoutRequested) { 1438 // Clear this now, so that if anything requests a layout in the 1439 // rest of this function we will catch it and re-run a full 1440 // layout pass. 1441 mLayoutRequested = false; 1442 } 1443 1444 boolean windowShouldResize = layoutRequested && windowSizeMayChange 1445 && ((mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) 1446 || (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT && 1447 frame.width() < desiredWindowWidth && frame.width() != mWidth) 1448 || (lp.height == ViewGroup.LayoutParams.WRAP_CONTENT && 1449 frame.height() < desiredWindowHeight && frame.height() != mHeight)); 1450 1451 // Determine whether to compute insets. 1452 // If there are no inset listeners remaining then we may still need to compute 1453 // insets in case the old insets were non-empty and must be reset. 1454 final boolean computesInternalInsets = 1455 mAttachInfo.mTreeObserver.hasComputeInternalInsetsListeners() 1456 || mAttachInfo.mHasNonEmptyGivenInternalInsets; 1457 1458 boolean insetsPending = false; 1459 int relayoutResult = 0; 1460 1461 if (mFirst || windowShouldResize || insetsChanged || 1462 viewVisibilityChanged || params != null) { 1463 1464 if (viewVisibility == View.VISIBLE) { 1465 // If this window is giving internal insets to the window 1466 // manager, and it is being added or changing its visibility, 1467 // then we want to first give the window manager "fake" 1468 // insets to cause it to effectively ignore the content of 1469 // the window during layout. This avoids it briefly causing 1470 // other windows to resize/move based on the raw frame of the 1471 // window, waiting until we can finish laying out this window 1472 // and get back to the window manager with the ultimately 1473 // computed insets. 1474 insetsPending = computesInternalInsets && (mFirst || viewVisibilityChanged); 1475 } 1476 1477 if (mSurfaceHolder != null) { 1478 mSurfaceHolder.mSurfaceLock.lock(); 1479 mDrawingAllowed = true; 1480 } 1481 1482 boolean hwInitialized = false; 1483 boolean contentInsetsChanged = false; 1484 boolean hadSurface = mSurface.isValid(); 1485 1486 try { 1487 if (DEBUG_LAYOUT) { 1488 Log.i(TAG, "host=w:" + host.getMeasuredWidth() + ", h:" + 1489 host.getMeasuredHeight() + ", params=" + params); 1490 } 1491 1492 if (mAttachInfo.mHardwareRenderer != null) { 1493 // relayoutWindow may decide to destroy mSurface. As that decision 1494 // happens in WindowManager service, we need to be defensive here 1495 // and stop using the surface in case it gets destroyed. 1496 if (mAttachInfo.mHardwareRenderer.pauseSurface(mSurface)) { 1497 // Animations were running so we need to push a frame 1498 // to resume them 1499 mDirty.set(0, 0, mWidth, mHeight); 1500 } 1501 } 1502 final int surfaceGenerationId = mSurface.getGenerationId(); 1503 relayoutResult = relayoutWindow(params, viewVisibility, insetsPending); 1504 if (!mDrawDuringWindowsAnimating && 1505 (relayoutResult & WindowManagerGlobal.RELAYOUT_RES_ANIMATING) != 0) { 1506 mWindowsAnimating = true; 1507 } 1508 1509 if (DEBUG_LAYOUT) Log.v(TAG, "relayout: frame=" + frame.toShortString() 1510 + " overscan=" + mPendingOverscanInsets.toShortString() 1511 + " content=" + mPendingContentInsets.toShortString() 1512 + " visible=" + mPendingVisibleInsets.toShortString() 1513 + " visible=" + mPendingStableInsets.toShortString() 1514 + " surface=" + mSurface); 1515 1516 if (mPendingConfiguration.seq != 0) { 1517 if (DEBUG_CONFIGURATION) Log.v(TAG, "Visible with new config: " 1518 + mPendingConfiguration); 1519 updateConfiguration(mPendingConfiguration, !mFirst); 1520 mPendingConfiguration.seq = 0; 1521 } 1522 1523 final boolean overscanInsetsChanged = !mPendingOverscanInsets.equals( 1524 mAttachInfo.mOverscanInsets); 1525 contentInsetsChanged = !mPendingContentInsets.equals( 1526 mAttachInfo.mContentInsets); 1527 final boolean visibleInsetsChanged = !mPendingVisibleInsets.equals( 1528 mAttachInfo.mVisibleInsets); 1529 final boolean stableInsetsChanged = !mPendingStableInsets.equals( 1530 mAttachInfo.mStableInsets); 1531 if (contentInsetsChanged) { 1532 if (mWidth > 0 && mHeight > 0 && lp != null && 1533 ((lp.systemUiVisibility|lp.subtreeSystemUiVisibility) 1534 & View.SYSTEM_UI_LAYOUT_FLAGS) == 0 && 1535 mSurface != null && mSurface.isValid() && 1536 !mAttachInfo.mTurnOffWindowResizeAnim && 1537 mAttachInfo.mHardwareRenderer != null && 1538 mAttachInfo.mHardwareRenderer.isEnabled() && 1539 lp != null && !PixelFormat.formatHasAlpha(lp.format) 1540 && !mBlockResizeBuffer) { 1541 1542 disposeResizeBuffer(); 1543 1544// TODO: Again.... 1545// if (mResizeBuffer == null) { 1546// mResizeBuffer = mAttachInfo.mHardwareRenderer.createDisplayListLayer( 1547// mWidth, mHeight); 1548// } 1549// mResizeBuffer.prepare(mWidth, mHeight, false); 1550// RenderNode layerRenderNode = mResizeBuffer.startRecording(); 1551// HardwareCanvas layerCanvas = layerRenderNode.start(mWidth, mHeight); 1552// try { 1553// final int restoreCount = layerCanvas.save(); 1554// 1555// int yoff; 1556// final boolean scrolling = mScroller != null 1557// && mScroller.computeScrollOffset(); 1558// if (scrolling) { 1559// yoff = mScroller.getCurrY(); 1560// mScroller.abortAnimation(); 1561// } else { 1562// yoff = mScrollY; 1563// } 1564// 1565// layerCanvas.translate(0, -yoff); 1566// if (mTranslator != null) { 1567// mTranslator.translateCanvas(layerCanvas); 1568// } 1569// 1570// RenderNode renderNode = mView.mRenderNode; 1571// if (renderNode != null && renderNode.isValid()) { 1572// layerCanvas.drawDisplayList(renderNode, null, 1573// RenderNode.FLAG_CLIP_CHILDREN); 1574// } else { 1575// mView.draw(layerCanvas); 1576// } 1577// 1578// drawAccessibilityFocusedDrawableIfNeeded(layerCanvas); 1579// 1580// mResizeBufferStartTime = SystemClock.uptimeMillis(); 1581// mResizeBufferDuration = mView.getResources().getInteger( 1582// com.android.internal.R.integer.config_mediumAnimTime); 1583// 1584// layerCanvas.restoreToCount(restoreCount); 1585// layerRenderNode.end(layerCanvas); 1586// layerRenderNode.setCaching(true); 1587// layerRenderNode.setLeftTopRightBottom(0, 0, mWidth, mHeight); 1588// mTempRect.set(0, 0, mWidth, mHeight); 1589// } finally { 1590// mResizeBuffer.endRecording(mTempRect); 1591// } 1592// mAttachInfo.mHardwareRenderer.flushLayerUpdates(); 1593 } 1594 mAttachInfo.mContentInsets.set(mPendingContentInsets); 1595 if (DEBUG_LAYOUT) Log.v(TAG, "Content insets changing to: " 1596 + mAttachInfo.mContentInsets); 1597 } 1598 if (overscanInsetsChanged) { 1599 mAttachInfo.mOverscanInsets.set(mPendingOverscanInsets); 1600 if (DEBUG_LAYOUT) Log.v(TAG, "Overscan insets changing to: " 1601 + mAttachInfo.mOverscanInsets); 1602 // Need to relayout with content insets. 1603 contentInsetsChanged = true; 1604 } 1605 if (stableInsetsChanged) { 1606 mAttachInfo.mStableInsets.set(mPendingStableInsets); 1607 if (DEBUG_LAYOUT) Log.v(TAG, "Decor insets changing to: " 1608 + mAttachInfo.mStableInsets); 1609 // Need to relayout with content insets. 1610 contentInsetsChanged = true; 1611 } 1612 if (contentInsetsChanged || mLastSystemUiVisibility != 1613 mAttachInfo.mSystemUiVisibility || mApplyInsetsRequested 1614 || mLastOverscanRequested != mAttachInfo.mOverscanRequested) { 1615 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1616 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1617 mApplyInsetsRequested = false; 1618 dispatchApplyInsets(host); 1619 } 1620 if (visibleInsetsChanged) { 1621 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1622 if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: " 1623 + mAttachInfo.mVisibleInsets); 1624 } 1625 1626 if (!hadSurface) { 1627 if (mSurface.isValid()) { 1628 // If we are creating a new surface, then we need to 1629 // completely redraw it. Also, when we get to the 1630 // point of drawing it we will hold off and schedule 1631 // a new traversal instead. This is so we can tell the 1632 // window manager about all of the windows being displayed 1633 // before actually drawing them, so it can display then 1634 // all at once. 1635 newSurface = true; 1636 mFullRedrawNeeded = true; 1637 mPreviousTransparentRegion.setEmpty(); 1638 1639 if (mAttachInfo.mHardwareRenderer != null) { 1640 try { 1641 hwInitialized = mAttachInfo.mHardwareRenderer.initialize( 1642 mSurface); 1643 } catch (OutOfResourcesException e) { 1644 handleOutOfResourcesException(e); 1645 return; 1646 } 1647 } 1648 } 1649 } else if (!mSurface.isValid()) { 1650 // If the surface has been removed, then reset the scroll 1651 // positions. 1652 if (mLastScrolledFocus != null) { 1653 mLastScrolledFocus.clear(); 1654 } 1655 mScrollY = mCurScrollY = 0; 1656 if (mView instanceof RootViewSurfaceTaker) { 1657 ((RootViewSurfaceTaker) mView).onRootViewScrollYChanged(mCurScrollY); 1658 } 1659 if (mScroller != null) { 1660 mScroller.abortAnimation(); 1661 } 1662 disposeResizeBuffer(); 1663 // Our surface is gone 1664 if (mAttachInfo.mHardwareRenderer != null && 1665 mAttachInfo.mHardwareRenderer.isEnabled()) { 1666 mAttachInfo.mHardwareRenderer.destroy(); 1667 } 1668 } else if (surfaceGenerationId != mSurface.getGenerationId() && 1669 mSurfaceHolder == null && mAttachInfo.mHardwareRenderer != null) { 1670 mFullRedrawNeeded = true; 1671 try { 1672 mAttachInfo.mHardwareRenderer.updateSurface(mSurface); 1673 } catch (OutOfResourcesException e) { 1674 handleOutOfResourcesException(e); 1675 return; 1676 } 1677 } 1678 } catch (RemoteException e) { 1679 } 1680 1681 if (DEBUG_ORIENTATION) Log.v( 1682 TAG, "Relayout returned: frame=" + frame + ", surface=" + mSurface); 1683 1684 mAttachInfo.mWindowLeft = frame.left; 1685 mAttachInfo.mWindowTop = frame.top; 1686 1687 // !!FIXME!! This next section handles the case where we did not get the 1688 // window size we asked for. We should avoid this by getting a maximum size from 1689 // the window session beforehand. 1690 if (mWidth != frame.width() || mHeight != frame.height()) { 1691 mWidth = frame.width(); 1692 mHeight = frame.height(); 1693 } 1694 1695 if (mSurfaceHolder != null) { 1696 // The app owns the surface; tell it about what is going on. 1697 if (mSurface.isValid()) { 1698 // XXX .copyFrom() doesn't work! 1699 //mSurfaceHolder.mSurface.copyFrom(mSurface); 1700 mSurfaceHolder.mSurface = mSurface; 1701 } 1702 mSurfaceHolder.setSurfaceFrameSize(mWidth, mHeight); 1703 mSurfaceHolder.mSurfaceLock.unlock(); 1704 if (mSurface.isValid()) { 1705 if (!hadSurface) { 1706 mSurfaceHolder.ungetCallbacks(); 1707 1708 mIsCreating = true; 1709 mSurfaceHolderCallback.surfaceCreated(mSurfaceHolder); 1710 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1711 if (callbacks != null) { 1712 for (SurfaceHolder.Callback c : callbacks) { 1713 c.surfaceCreated(mSurfaceHolder); 1714 } 1715 } 1716 surfaceChanged = true; 1717 } 1718 if (surfaceChanged) { 1719 mSurfaceHolderCallback.surfaceChanged(mSurfaceHolder, 1720 lp.format, mWidth, mHeight); 1721 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1722 if (callbacks != null) { 1723 for (SurfaceHolder.Callback c : callbacks) { 1724 c.surfaceChanged(mSurfaceHolder, lp.format, 1725 mWidth, mHeight); 1726 } 1727 } 1728 } 1729 mIsCreating = false; 1730 } else if (hadSurface) { 1731 mSurfaceHolder.ungetCallbacks(); 1732 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1733 mSurfaceHolderCallback.surfaceDestroyed(mSurfaceHolder); 1734 if (callbacks != null) { 1735 for (SurfaceHolder.Callback c : callbacks) { 1736 c.surfaceDestroyed(mSurfaceHolder); 1737 } 1738 } 1739 mSurfaceHolder.mSurfaceLock.lock(); 1740 try { 1741 mSurfaceHolder.mSurface = new Surface(); 1742 } finally { 1743 mSurfaceHolder.mSurfaceLock.unlock(); 1744 } 1745 } 1746 } 1747 1748 if (mAttachInfo.mHardwareRenderer != null && 1749 mAttachInfo.mHardwareRenderer.isEnabled()) { 1750 if (hwInitialized || 1751 mWidth != mAttachInfo.mHardwareRenderer.getWidth() || 1752 mHeight != mAttachInfo.mHardwareRenderer.getHeight()) { 1753 mAttachInfo.mHardwareRenderer.setup( 1754 mWidth, mHeight, mWindowAttributes.surfaceInsets); 1755 if (!hwInitialized) { 1756 mAttachInfo.mHardwareRenderer.invalidate(mSurface); 1757 mFullRedrawNeeded = true; 1758 } 1759 } 1760 } 1761 1762 if (!mStopped) { 1763 boolean focusChangedDueToTouchMode = ensureTouchModeLocally( 1764 (relayoutResult&WindowManagerGlobal.RELAYOUT_RES_IN_TOUCH_MODE) != 0); 1765 if (focusChangedDueToTouchMode || mWidth != host.getMeasuredWidth() 1766 || mHeight != host.getMeasuredHeight() || contentInsetsChanged) { 1767 int childWidthMeasureSpec = getRootMeasureSpec(mWidth, lp.width); 1768 int childHeightMeasureSpec = getRootMeasureSpec(mHeight, lp.height); 1769 1770 if (DEBUG_LAYOUT) Log.v(TAG, "Ooops, something changed! mWidth=" 1771 + mWidth + " measuredWidth=" + host.getMeasuredWidth() 1772 + " mHeight=" + mHeight 1773 + " measuredHeight=" + host.getMeasuredHeight() 1774 + " coveredInsetsChanged=" + contentInsetsChanged); 1775 1776 // Ask host how big it wants to be 1777 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1778 1779 // Implementation of weights from WindowManager.LayoutParams 1780 // We just grow the dimensions as needed and re-measure if 1781 // needs be 1782 int width = host.getMeasuredWidth(); 1783 int height = host.getMeasuredHeight(); 1784 boolean measureAgain = false; 1785 1786 if (lp.horizontalWeight > 0.0f) { 1787 width += (int) ((mWidth - width) * lp.horizontalWeight); 1788 childWidthMeasureSpec = MeasureSpec.makeMeasureSpec(width, 1789 MeasureSpec.EXACTLY); 1790 measureAgain = true; 1791 } 1792 if (lp.verticalWeight > 0.0f) { 1793 height += (int) ((mHeight - height) * lp.verticalWeight); 1794 childHeightMeasureSpec = MeasureSpec.makeMeasureSpec(height, 1795 MeasureSpec.EXACTLY); 1796 measureAgain = true; 1797 } 1798 1799 if (measureAgain) { 1800 if (DEBUG_LAYOUT) Log.v(TAG, 1801 "And hey let's measure once more: width=" + width 1802 + " height=" + height); 1803 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1804 } 1805 1806 layoutRequested = true; 1807 } 1808 } 1809 } else { 1810 // Not the first pass and no window/insets/visibility change but the window 1811 // may have moved and we need check that and if so to update the left and right 1812 // in the attach info. We translate only the window frame since on window move 1813 // the window manager tells us only for the new frame but the insets are the 1814 // same and we do not want to translate them more than once. 1815 1816 // TODO: Well, we are checking whether the frame has changed similarly 1817 // to how this is done for the insets. This is however incorrect since 1818 // the insets and the frame are translated. For example, the old frame 1819 // was (1, 1 - 1, 1) and was translated to say (2, 2 - 2, 2), now the new 1820 // reported frame is (2, 2 - 2, 2) which implies no change but this is not 1821 // true since we are comparing a not translated value to a translated one. 1822 // This scenario is rare but we may want to fix that. 1823 1824 final boolean windowMoved = (mAttachInfo.mWindowLeft != frame.left 1825 || mAttachInfo.mWindowTop != frame.top); 1826 if (windowMoved) { 1827 if (mTranslator != null) { 1828 mTranslator.translateRectInScreenToAppWinFrame(frame); 1829 } 1830 mAttachInfo.mWindowLeft = frame.left; 1831 mAttachInfo.mWindowTop = frame.top; 1832 } 1833 } 1834 1835 final boolean didLayout = layoutRequested && !mStopped; 1836 boolean triggerGlobalLayoutListener = didLayout 1837 || mAttachInfo.mRecomputeGlobalAttributes; 1838 if (didLayout) { 1839 performLayout(lp, desiredWindowWidth, desiredWindowHeight); 1840 1841 // By this point all views have been sized and positioned 1842 // We can compute the transparent area 1843 1844 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 1845 // start out transparent 1846 // TODO: AVOID THAT CALL BY CACHING THE RESULT? 1847 host.getLocationInWindow(mTmpLocation); 1848 mTransparentRegion.set(mTmpLocation[0], mTmpLocation[1], 1849 mTmpLocation[0] + host.mRight - host.mLeft, 1850 mTmpLocation[1] + host.mBottom - host.mTop); 1851 1852 host.gatherTransparentRegion(mTransparentRegion); 1853 if (mTranslator != null) { 1854 mTranslator.translateRegionInWindowToScreen(mTransparentRegion); 1855 } 1856 1857 if (!mTransparentRegion.equals(mPreviousTransparentRegion)) { 1858 mPreviousTransparentRegion.set(mTransparentRegion); 1859 mFullRedrawNeeded = true; 1860 // reconfigure window manager 1861 try { 1862 mWindowSession.setTransparentRegion(mWindow, mTransparentRegion); 1863 } catch (RemoteException e) { 1864 } 1865 } 1866 } 1867 1868 if (DBG) { 1869 System.out.println("======================================"); 1870 System.out.println("performTraversals -- after setFrame"); 1871 host.debug(); 1872 } 1873 } 1874 1875 if (triggerGlobalLayoutListener) { 1876 mAttachInfo.mRecomputeGlobalAttributes = false; 1877 mAttachInfo.mTreeObserver.dispatchOnGlobalLayout(); 1878 } 1879 1880 if (computesInternalInsets) { 1881 // Clear the original insets. 1882 final ViewTreeObserver.InternalInsetsInfo insets = mAttachInfo.mGivenInternalInsets; 1883 insets.reset(); 1884 1885 // Compute new insets in place. 1886 mAttachInfo.mTreeObserver.dispatchOnComputeInternalInsets(insets); 1887 mAttachInfo.mHasNonEmptyGivenInternalInsets = !insets.isEmpty(); 1888 1889 // Tell the window manager. 1890 if (insetsPending || !mLastGivenInsets.equals(insets)) { 1891 mLastGivenInsets.set(insets); 1892 1893 // Translate insets to screen coordinates if needed. 1894 final Rect contentInsets; 1895 final Rect visibleInsets; 1896 final Region touchableRegion; 1897 if (mTranslator != null) { 1898 contentInsets = mTranslator.getTranslatedContentInsets(insets.contentInsets); 1899 visibleInsets = mTranslator.getTranslatedVisibleInsets(insets.visibleInsets); 1900 touchableRegion = mTranslator.getTranslatedTouchableArea(insets.touchableRegion); 1901 } else { 1902 contentInsets = insets.contentInsets; 1903 visibleInsets = insets.visibleInsets; 1904 touchableRegion = insets.touchableRegion; 1905 } 1906 1907 try { 1908 mWindowSession.setInsets(mWindow, insets.mTouchableInsets, 1909 contentInsets, visibleInsets, touchableRegion); 1910 } catch (RemoteException e) { 1911 } 1912 } 1913 } 1914 1915 boolean skipDraw = false; 1916 1917 if (mFirst) { 1918 // handle first focus request 1919 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: mView.hasFocus()=" 1920 + mView.hasFocus()); 1921 if (mView != null) { 1922 if (!mView.hasFocus()) { 1923 mView.requestFocus(View.FOCUS_FORWARD); 1924 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: requested focused view=" 1925 + mView.findFocus()); 1926 } else { 1927 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: existing focused view=" 1928 + mView.findFocus()); 1929 } 1930 } 1931 if ((relayoutResult & WindowManagerGlobal.RELAYOUT_RES_ANIMATING) != 0) { 1932 // The first time we relayout the window, if the system is 1933 // doing window animations, we want to hold of on any future 1934 // draws until the animation is done. 1935 mWindowsAnimating = true; 1936 } 1937 } else if (mWindowsAnimating) { 1938 skipDraw = true; 1939 } 1940 1941 mFirst = false; 1942 mWillDrawSoon = false; 1943 mNewSurfaceNeeded = false; 1944 mViewVisibility = viewVisibility; 1945 1946 if (mAttachInfo.mHasWindowFocus && !isInLocalFocusMode()) { 1947 final boolean imTarget = WindowManager.LayoutParams 1948 .mayUseInputMethod(mWindowAttributes.flags); 1949 if (imTarget != mLastWasImTarget) { 1950 mLastWasImTarget = imTarget; 1951 InputMethodManager imm = InputMethodManager.peekInstance(); 1952 if (imm != null && imTarget) { 1953 imm.startGettingWindowFocus(mView); 1954 imm.onWindowFocus(mView, mView.findFocus(), 1955 mWindowAttributes.softInputMode, 1956 !mHasHadWindowFocus, mWindowAttributes.flags); 1957 } 1958 } 1959 } 1960 1961 // Remember if we must report the next draw. 1962 if ((relayoutResult & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 1963 mReportNextDraw = true; 1964 } 1965 1966 boolean cancelDraw = mAttachInfo.mTreeObserver.dispatchOnPreDraw() || 1967 viewVisibility != View.VISIBLE; 1968 1969 if (!cancelDraw && !newSurface) { 1970 if (!skipDraw || mReportNextDraw) { 1971 if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 1972 for (int i = 0; i < mPendingTransitions.size(); ++i) { 1973 mPendingTransitions.get(i).startChangingAnimations(); 1974 } 1975 mPendingTransitions.clear(); 1976 } 1977 1978 performDraw(); 1979 } 1980 } else { 1981 if (viewVisibility == View.VISIBLE) { 1982 // Try again 1983 scheduleTraversals(); 1984 } else if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 1985 for (int i = 0; i < mPendingTransitions.size(); ++i) { 1986 mPendingTransitions.get(i).endChangingAnimations(); 1987 } 1988 mPendingTransitions.clear(); 1989 } 1990 } 1991 1992 mIsInTraversal = false; 1993 } 1994 1995 private void handleOutOfResourcesException(Surface.OutOfResourcesException e) { 1996 Log.e(TAG, "OutOfResourcesException initializing HW surface", e); 1997 try { 1998 if (!mWindowSession.outOfMemory(mWindow) && 1999 Process.myUid() != Process.SYSTEM_UID) { 2000 Slog.w(TAG, "No processes killed for memory; killing self"); 2001 Process.killProcess(Process.myPid()); 2002 } 2003 } catch (RemoteException ex) { 2004 } 2005 mLayoutRequested = true; // ask wm for a new surface next time. 2006 } 2007 2008 private void performMeasure(int childWidthMeasureSpec, int childHeightMeasureSpec) { 2009 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "measure"); 2010 try { 2011 mView.measure(childWidthMeasureSpec, childHeightMeasureSpec); 2012 } finally { 2013 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2014 } 2015 } 2016 2017 /** 2018 * Called by {@link android.view.View#isInLayout()} to determine whether the view hierarchy 2019 * is currently undergoing a layout pass. 2020 * 2021 * @return whether the view hierarchy is currently undergoing a layout pass 2022 */ 2023 boolean isInLayout() { 2024 return mInLayout; 2025 } 2026 2027 /** 2028 * Called by {@link android.view.View#requestLayout()} if the view hierarchy is currently 2029 * undergoing a layout pass. requestLayout() should not generally be called during layout, 2030 * unless the container hierarchy knows what it is doing (i.e., it is fine as long as 2031 * all children in that container hierarchy are measured and laid out at the end of the layout 2032 * pass for that container). If requestLayout() is called anyway, we handle it correctly 2033 * by registering all requesters during a frame as it proceeds. At the end of the frame, 2034 * we check all of those views to see if any still have pending layout requests, which 2035 * indicates that they were not correctly handled by their container hierarchy. If that is 2036 * the case, we clear all such flags in the tree, to remove the buggy flag state that leads 2037 * to blank containers, and force a second request/measure/layout pass in this frame. If 2038 * more requestLayout() calls are received during that second layout pass, we post those 2039 * requests to the next frame to avoid possible infinite loops. 2040 * 2041 * <p>The return value from this method indicates whether the request should proceed 2042 * (if it is a request during the first layout pass) or should be skipped and posted to the 2043 * next frame (if it is a request during the second layout pass).</p> 2044 * 2045 * @param view the view that requested the layout. 2046 * 2047 * @return true if request should proceed, false otherwise. 2048 */ 2049 boolean requestLayoutDuringLayout(final View view) { 2050 if (view.mParent == null || view.mAttachInfo == null) { 2051 // Would not normally trigger another layout, so just let it pass through as usual 2052 return true; 2053 } 2054 if (!mLayoutRequesters.contains(view)) { 2055 mLayoutRequesters.add(view); 2056 } 2057 if (!mHandlingLayoutInLayoutRequest) { 2058 // Let the request proceed normally; it will be processed in a second layout pass 2059 // if necessary 2060 return true; 2061 } else { 2062 // Don't let the request proceed during the second layout pass. 2063 // It will post to the next frame instead. 2064 return false; 2065 } 2066 } 2067 2068 private void performLayout(WindowManager.LayoutParams lp, int desiredWindowWidth, 2069 int desiredWindowHeight) { 2070 mLayoutRequested = false; 2071 mScrollMayChange = true; 2072 mInLayout = true; 2073 2074 final View host = mView; 2075 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) { 2076 Log.v(TAG, "Laying out " + host + " to (" + 2077 host.getMeasuredWidth() + ", " + host.getMeasuredHeight() + ")"); 2078 } 2079 2080 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "layout"); 2081 try { 2082 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 2083 2084 mInLayout = false; 2085 int numViewsRequestingLayout = mLayoutRequesters.size(); 2086 if (numViewsRequestingLayout > 0) { 2087 // requestLayout() was called during layout. 2088 // If no layout-request flags are set on the requesting views, there is no problem. 2089 // If some requests are still pending, then we need to clear those flags and do 2090 // a full request/measure/layout pass to handle this situation. 2091 ArrayList<View> validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, 2092 false); 2093 if (validLayoutRequesters != null) { 2094 // Set this flag to indicate that any further requests are happening during 2095 // the second pass, which may result in posting those requests to the next 2096 // frame instead 2097 mHandlingLayoutInLayoutRequest = true; 2098 2099 // Process fresh layout requests, then measure and layout 2100 int numValidRequests = validLayoutRequesters.size(); 2101 for (int i = 0; i < numValidRequests; ++i) { 2102 final View view = validLayoutRequesters.get(i); 2103 Log.w("View", "requestLayout() improperly called by " + view + 2104 " during layout: running second layout pass"); 2105 view.requestLayout(); 2106 } 2107 measureHierarchy(host, lp, mView.getContext().getResources(), 2108 desiredWindowWidth, desiredWindowHeight); 2109 mInLayout = true; 2110 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 2111 2112 mHandlingLayoutInLayoutRequest = false; 2113 2114 // Check the valid requests again, this time without checking/clearing the 2115 // layout flags, since requests happening during the second pass get noop'd 2116 validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, true); 2117 if (validLayoutRequesters != null) { 2118 final ArrayList<View> finalRequesters = validLayoutRequesters; 2119 // Post second-pass requests to the next frame 2120 getRunQueue().post(new Runnable() { 2121 @Override 2122 public void run() { 2123 int numValidRequests = finalRequesters.size(); 2124 for (int i = 0; i < numValidRequests; ++i) { 2125 final View view = finalRequesters.get(i); 2126 Log.w("View", "requestLayout() improperly called by " + view + 2127 " during second layout pass: posting in next frame"); 2128 view.requestLayout(); 2129 } 2130 } 2131 }); 2132 } 2133 } 2134 2135 } 2136 } finally { 2137 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2138 } 2139 mInLayout = false; 2140 } 2141 2142 /** 2143 * This method is called during layout when there have been calls to requestLayout() during 2144 * layout. It walks through the list of views that requested layout to determine which ones 2145 * still need it, based on visibility in the hierarchy and whether they have already been 2146 * handled (as is usually the case with ListView children). 2147 * 2148 * @param layoutRequesters The list of views that requested layout during layout 2149 * @param secondLayoutRequests Whether the requests were issued during the second layout pass. 2150 * If so, the FORCE_LAYOUT flag was not set on requesters. 2151 * @return A list of the actual views that still need to be laid out. 2152 */ 2153 private ArrayList<View> getValidLayoutRequesters(ArrayList<View> layoutRequesters, 2154 boolean secondLayoutRequests) { 2155 2156 int numViewsRequestingLayout = layoutRequesters.size(); 2157 ArrayList<View> validLayoutRequesters = null; 2158 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2159 View view = layoutRequesters.get(i); 2160 if (view != null && view.mAttachInfo != null && view.mParent != null && 2161 (secondLayoutRequests || (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) == 2162 View.PFLAG_FORCE_LAYOUT)) { 2163 boolean gone = false; 2164 View parent = view; 2165 // Only trigger new requests for views in a non-GONE hierarchy 2166 while (parent != null) { 2167 if ((parent.mViewFlags & View.VISIBILITY_MASK) == View.GONE) { 2168 gone = true; 2169 break; 2170 } 2171 if (parent.mParent instanceof View) { 2172 parent = (View) parent.mParent; 2173 } else { 2174 parent = null; 2175 } 2176 } 2177 if (!gone) { 2178 if (validLayoutRequesters == null) { 2179 validLayoutRequesters = new ArrayList<View>(); 2180 } 2181 validLayoutRequesters.add(view); 2182 } 2183 } 2184 } 2185 if (!secondLayoutRequests) { 2186 // If we're checking the layout flags, then we need to clean them up also 2187 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2188 View view = layoutRequesters.get(i); 2189 while (view != null && 2190 (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) != 0) { 2191 view.mPrivateFlags &= ~View.PFLAG_FORCE_LAYOUT; 2192 if (view.mParent instanceof View) { 2193 view = (View) view.mParent; 2194 } else { 2195 view = null; 2196 } 2197 } 2198 } 2199 } 2200 layoutRequesters.clear(); 2201 return validLayoutRequesters; 2202 } 2203 2204 @Override 2205 public void requestTransparentRegion(View child) { 2206 // the test below should not fail unless someone is messing with us 2207 checkThread(); 2208 if (mView == child) { 2209 mView.mPrivateFlags |= View.PFLAG_REQUEST_TRANSPARENT_REGIONS; 2210 // Need to make sure we re-evaluate the window attributes next 2211 // time around, to ensure the window has the correct format. 2212 mWindowAttributesChanged = true; 2213 mWindowAttributesChangesFlag = 0; 2214 requestLayout(); 2215 } 2216 } 2217 2218 /** 2219 * Figures out the measure spec for the root view in a window based on it's 2220 * layout params. 2221 * 2222 * @param windowSize 2223 * The available width or height of the window 2224 * 2225 * @param rootDimension 2226 * The layout params for one dimension (width or height) of the 2227 * window. 2228 * 2229 * @return The measure spec to use to measure the root view. 2230 */ 2231 private static int getRootMeasureSpec(int windowSize, int rootDimension) { 2232 int measureSpec; 2233 switch (rootDimension) { 2234 2235 case ViewGroup.LayoutParams.MATCH_PARENT: 2236 // Window can't resize. Force root view to be windowSize. 2237 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.EXACTLY); 2238 break; 2239 case ViewGroup.LayoutParams.WRAP_CONTENT: 2240 // Window can resize. Set max size for root view. 2241 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.AT_MOST); 2242 break; 2243 default: 2244 // Window wants to be an exact size. Force root view to be that size. 2245 measureSpec = MeasureSpec.makeMeasureSpec(rootDimension, MeasureSpec.EXACTLY); 2246 break; 2247 } 2248 return measureSpec; 2249 } 2250 2251 int mHardwareXOffset; 2252 int mHardwareYOffset; 2253 int mResizeAlpha; 2254 final Paint mResizePaint = new Paint(); 2255 2256 @Override 2257 public void onHardwarePreDraw(HardwareCanvas canvas) { 2258 canvas.translate(-mHardwareXOffset, -mHardwareYOffset); 2259 } 2260 2261 @Override 2262 public void onHardwarePostDraw(HardwareCanvas canvas) { 2263 if (mResizeBuffer != null) { 2264 mResizePaint.setAlpha(mResizeAlpha); 2265 canvas.drawHardwareLayer(mResizeBuffer, mHardwareXOffset, mHardwareYOffset, 2266 mResizePaint); 2267 } 2268 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2269 } 2270 2271 /** 2272 * @hide 2273 */ 2274 void outputDisplayList(View view) { 2275 RenderNode renderNode = view.getDisplayList(); 2276 if (renderNode != null) { 2277 renderNode.output(); 2278 } 2279 } 2280 2281 /** 2282 * @see #PROPERTY_PROFILE_RENDERING 2283 */ 2284 private void profileRendering(boolean enabled) { 2285 if (mProfileRendering) { 2286 mRenderProfilingEnabled = enabled; 2287 2288 if (mRenderProfiler != null) { 2289 mChoreographer.removeFrameCallback(mRenderProfiler); 2290 } 2291 if (mRenderProfilingEnabled) { 2292 if (mRenderProfiler == null) { 2293 mRenderProfiler = new Choreographer.FrameCallback() { 2294 @Override 2295 public void doFrame(long frameTimeNanos) { 2296 mDirty.set(0, 0, mWidth, mHeight); 2297 scheduleTraversals(); 2298 if (mRenderProfilingEnabled) { 2299 mChoreographer.postFrameCallback(mRenderProfiler); 2300 } 2301 } 2302 }; 2303 } 2304 mChoreographer.postFrameCallback(mRenderProfiler); 2305 } else { 2306 mRenderProfiler = null; 2307 } 2308 } 2309 } 2310 2311 /** 2312 * Called from draw() when DEBUG_FPS is enabled 2313 */ 2314 private void trackFPS() { 2315 // Tracks frames per second drawn. First value in a series of draws may be bogus 2316 // because it down not account for the intervening idle time 2317 long nowTime = System.currentTimeMillis(); 2318 if (mFpsStartTime < 0) { 2319 mFpsStartTime = mFpsPrevTime = nowTime; 2320 mFpsNumFrames = 0; 2321 } else { 2322 ++mFpsNumFrames; 2323 String thisHash = Integer.toHexString(System.identityHashCode(this)); 2324 long frameTime = nowTime - mFpsPrevTime; 2325 long totalTime = nowTime - mFpsStartTime; 2326 Log.v(TAG, "0x" + thisHash + "\tFrame time:\t" + frameTime); 2327 mFpsPrevTime = nowTime; 2328 if (totalTime > 1000) { 2329 float fps = (float) mFpsNumFrames * 1000 / totalTime; 2330 Log.v(TAG, "0x" + thisHash + "\tFPS:\t" + fps); 2331 mFpsStartTime = nowTime; 2332 mFpsNumFrames = 0; 2333 } 2334 } 2335 } 2336 2337 private void performDraw() { 2338 if (mAttachInfo.mDisplayState == Display.STATE_OFF && !mReportNextDraw) { 2339 return; 2340 } 2341 2342 final boolean fullRedrawNeeded = mFullRedrawNeeded; 2343 mFullRedrawNeeded = false; 2344 2345 mIsDrawing = true; 2346 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "draw"); 2347 try { 2348 draw(fullRedrawNeeded); 2349 } finally { 2350 mIsDrawing = false; 2351 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2352 } 2353 2354 // For whatever reason we didn't create a HardwareRenderer, end any 2355 // hardware animations that are now dangling 2356 if (mAttachInfo.mPendingAnimatingRenderNodes != null) { 2357 final int count = mAttachInfo.mPendingAnimatingRenderNodes.size(); 2358 for (int i = 0; i < count; i++) { 2359 mAttachInfo.mPendingAnimatingRenderNodes.get(i).endAllAnimators(); 2360 } 2361 mAttachInfo.mPendingAnimatingRenderNodes.clear(); 2362 } 2363 2364 if (mReportNextDraw) { 2365 mReportNextDraw = false; 2366 if (mAttachInfo.mHardwareRenderer != null) { 2367 mAttachInfo.mHardwareRenderer.fence(); 2368 } 2369 2370 if (LOCAL_LOGV) { 2371 Log.v(TAG, "FINISHED DRAWING: " + mWindowAttributes.getTitle()); 2372 } 2373 if (mSurfaceHolder != null && mSurface.isValid()) { 2374 mSurfaceHolderCallback.surfaceRedrawNeeded(mSurfaceHolder); 2375 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 2376 if (callbacks != null) { 2377 for (SurfaceHolder.Callback c : callbacks) { 2378 if (c instanceof SurfaceHolder.Callback2) { 2379 ((SurfaceHolder.Callback2)c).surfaceRedrawNeeded( 2380 mSurfaceHolder); 2381 } 2382 } 2383 } 2384 } 2385 try { 2386 mWindowSession.finishDrawing(mWindow); 2387 } catch (RemoteException e) { 2388 } 2389 } 2390 } 2391 2392 private void draw(boolean fullRedrawNeeded) { 2393 Surface surface = mSurface; 2394 if (!surface.isValid()) { 2395 return; 2396 } 2397 2398 if (DEBUG_FPS) { 2399 trackFPS(); 2400 } 2401 2402 if (!sFirstDrawComplete) { 2403 synchronized (sFirstDrawHandlers) { 2404 sFirstDrawComplete = true; 2405 final int count = sFirstDrawHandlers.size(); 2406 for (int i = 0; i< count; i++) { 2407 mHandler.post(sFirstDrawHandlers.get(i)); 2408 } 2409 } 2410 } 2411 2412 scrollToRectOrFocus(null, false); 2413 2414 if (mAttachInfo.mViewScrollChanged) { 2415 mAttachInfo.mViewScrollChanged = false; 2416 mAttachInfo.mTreeObserver.dispatchOnScrollChanged(); 2417 } 2418 2419 boolean animating = mScroller != null && mScroller.computeScrollOffset(); 2420 final int curScrollY; 2421 if (animating) { 2422 curScrollY = mScroller.getCurrY(); 2423 } else { 2424 curScrollY = mScrollY; 2425 } 2426 if (mCurScrollY != curScrollY) { 2427 mCurScrollY = curScrollY; 2428 fullRedrawNeeded = true; 2429 if (mView instanceof RootViewSurfaceTaker) { 2430 ((RootViewSurfaceTaker) mView).onRootViewScrollYChanged(mCurScrollY); 2431 } 2432 } 2433 2434 final float appScale = mAttachInfo.mApplicationScale; 2435 final boolean scalingRequired = mAttachInfo.mScalingRequired; 2436 2437 int resizeAlpha = 0; 2438 if (mResizeBuffer != null) { 2439 long deltaTime = SystemClock.uptimeMillis() - mResizeBufferStartTime; 2440 if (deltaTime < mResizeBufferDuration) { 2441 float amt = deltaTime/(float) mResizeBufferDuration; 2442 amt = mResizeInterpolator.getInterpolation(amt); 2443 animating = true; 2444 resizeAlpha = 255 - (int)(amt*255); 2445 } else { 2446 disposeResizeBuffer(); 2447 } 2448 } 2449 2450 final Rect dirty = mDirty; 2451 if (mSurfaceHolder != null) { 2452 // The app owns the surface, we won't draw. 2453 dirty.setEmpty(); 2454 if (animating) { 2455 if (mScroller != null) { 2456 mScroller.abortAnimation(); 2457 } 2458 disposeResizeBuffer(); 2459 } 2460 return; 2461 } 2462 2463 if (fullRedrawNeeded) { 2464 mAttachInfo.mIgnoreDirtyState = true; 2465 dirty.set(0, 0, (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 2466 } 2467 2468 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2469 Log.v(TAG, "Draw " + mView + "/" 2470 + mWindowAttributes.getTitle() 2471 + ": dirty={" + dirty.left + "," + dirty.top 2472 + "," + dirty.right + "," + dirty.bottom + "} surface=" 2473 + surface + " surface.isValid()=" + surface.isValid() + ", appScale:" + 2474 appScale + ", width=" + mWidth + ", height=" + mHeight); 2475 } 2476 2477 mAttachInfo.mTreeObserver.dispatchOnDraw(); 2478 2479 int xOffset = 0; 2480 int yOffset = curScrollY; 2481 final WindowManager.LayoutParams params = mWindowAttributes; 2482 final Rect surfaceInsets = params != null ? params.surfaceInsets : null; 2483 if (surfaceInsets != null) { 2484 xOffset -= surfaceInsets.left; 2485 yOffset -= surfaceInsets.top; 2486 2487 // Offset dirty rect for surface insets. 2488 dirty.offset(surfaceInsets.left, surfaceInsets.right); 2489 } 2490 2491 boolean accessibilityFocusDirty = false; 2492 final Drawable drawable = mAttachInfo.mAccessibilityFocusDrawable; 2493 if (drawable != null) { 2494 final Rect bounds = mAttachInfo.mTmpInvalRect; 2495 final boolean hasFocus = getAccessibilityFocusedRect(bounds); 2496 if (!hasFocus) { 2497 bounds.setEmpty(); 2498 } 2499 if (!bounds.equals(drawable.getBounds())) { 2500 accessibilityFocusDirty = true; 2501 } 2502 } 2503 2504 if (!dirty.isEmpty() || mIsAnimating || accessibilityFocusDirty) { 2505 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled()) { 2506 // If accessibility focus moved, always invalidate the root. 2507 boolean invalidateRoot = accessibilityFocusDirty; 2508 2509 // Draw with hardware renderer. 2510 mIsAnimating = false; 2511 2512 if (mHardwareYOffset != yOffset || mHardwareXOffset != xOffset) { 2513 mHardwareYOffset = yOffset; 2514 mHardwareXOffset = xOffset; 2515 invalidateRoot = true; 2516 } 2517 mResizeAlpha = resizeAlpha; 2518 2519 if (invalidateRoot) { 2520 mAttachInfo.mHardwareRenderer.invalidateRoot(); 2521 } 2522 2523 dirty.setEmpty(); 2524 2525 mBlockResizeBuffer = false; 2526 mAttachInfo.mHardwareRenderer.draw(mView, mAttachInfo, this); 2527 } else { 2528 // If we get here with a disabled & requested hardware renderer, something went 2529 // wrong (an invalidate posted right before we destroyed the hardware surface 2530 // for instance) so we should just bail out. Locking the surface with software 2531 // rendering at this point would lock it forever and prevent hardware renderer 2532 // from doing its job when it comes back. 2533 // Before we request a new frame we must however attempt to reinitiliaze the 2534 // hardware renderer if it's in requested state. This would happen after an 2535 // eglTerminate() for instance. 2536 if (mAttachInfo.mHardwareRenderer != null && 2537 !mAttachInfo.mHardwareRenderer.isEnabled() && 2538 mAttachInfo.mHardwareRenderer.isRequested()) { 2539 2540 try { 2541 mAttachInfo.mHardwareRenderer.initializeIfNeeded( 2542 mWidth, mHeight, mSurface, surfaceInsets); 2543 } catch (OutOfResourcesException e) { 2544 handleOutOfResourcesException(e); 2545 return; 2546 } 2547 2548 mFullRedrawNeeded = true; 2549 scheduleTraversals(); 2550 return; 2551 } 2552 2553 if (!drawSoftware(surface, mAttachInfo, xOffset, yOffset, scalingRequired, dirty)) { 2554 return; 2555 } 2556 } 2557 } 2558 2559 if (animating) { 2560 mFullRedrawNeeded = true; 2561 scheduleTraversals(); 2562 } 2563 } 2564 2565 /** 2566 * @return true if drawing was successful, false if an error occurred 2567 */ 2568 private boolean drawSoftware(Surface surface, AttachInfo attachInfo, int xoff, int yoff, 2569 boolean scalingRequired, Rect dirty) { 2570 2571 // Draw with software renderer. 2572 final Canvas canvas; 2573 try { 2574 final int left = dirty.left; 2575 final int top = dirty.top; 2576 final int right = dirty.right; 2577 final int bottom = dirty.bottom; 2578 2579 canvas = mSurface.lockCanvas(dirty); 2580 2581 // The dirty rectangle can be modified by Surface.lockCanvas() 2582 //noinspection ConstantConditions 2583 if (left != dirty.left || top != dirty.top || right != dirty.right 2584 || bottom != dirty.bottom) { 2585 attachInfo.mIgnoreDirtyState = true; 2586 } 2587 2588 // TODO: Do this in native 2589 canvas.setDensity(mDensity); 2590 } catch (Surface.OutOfResourcesException e) { 2591 handleOutOfResourcesException(e); 2592 return false; 2593 } catch (IllegalArgumentException e) { 2594 Log.e(TAG, "Could not lock surface", e); 2595 // Don't assume this is due to out of memory, it could be 2596 // something else, and if it is something else then we could 2597 // kill stuff (or ourself) for no reason. 2598 mLayoutRequested = true; // ask wm for a new surface next time. 2599 return false; 2600 } 2601 2602 try { 2603 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2604 Log.v(TAG, "Surface " + surface + " drawing to bitmap w=" 2605 + canvas.getWidth() + ", h=" + canvas.getHeight()); 2606 //canvas.drawARGB(255, 255, 0, 0); 2607 } 2608 2609 // If this bitmap's format includes an alpha channel, we 2610 // need to clear it before drawing so that the child will 2611 // properly re-composite its drawing on a transparent 2612 // background. This automatically respects the clip/dirty region 2613 // or 2614 // If we are applying an offset, we need to clear the area 2615 // where the offset doesn't appear to avoid having garbage 2616 // left in the blank areas. 2617 if (!canvas.isOpaque() || yoff != 0 || xoff != 0) { 2618 canvas.drawColor(0, PorterDuff.Mode.CLEAR); 2619 } 2620 2621 dirty.setEmpty(); 2622 mIsAnimating = false; 2623 attachInfo.mDrawingTime = SystemClock.uptimeMillis(); 2624 mView.mPrivateFlags |= View.PFLAG_DRAWN; 2625 2626 if (DEBUG_DRAW) { 2627 Context cxt = mView.getContext(); 2628 Log.i(TAG, "Drawing: package:" + cxt.getPackageName() + 2629 ", metrics=" + cxt.getResources().getDisplayMetrics() + 2630 ", compatibilityInfo=" + cxt.getResources().getCompatibilityInfo()); 2631 } 2632 try { 2633 canvas.translate(-xoff, -yoff); 2634 if (mTranslator != null) { 2635 mTranslator.translateCanvas(canvas); 2636 } 2637 canvas.setScreenDensity(scalingRequired ? mNoncompatDensity : 0); 2638 attachInfo.mSetIgnoreDirtyState = false; 2639 2640 mView.draw(canvas); 2641 2642 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2643 } finally { 2644 if (!attachInfo.mSetIgnoreDirtyState) { 2645 // Only clear the flag if it was not set during the mView.draw() call 2646 attachInfo.mIgnoreDirtyState = false; 2647 } 2648 } 2649 } finally { 2650 try { 2651 surface.unlockCanvasAndPost(canvas); 2652 } catch (IllegalArgumentException e) { 2653 Log.e(TAG, "Could not unlock surface", e); 2654 mLayoutRequested = true; // ask wm for a new surface next time. 2655 //noinspection ReturnInsideFinallyBlock 2656 return false; 2657 } 2658 2659 if (LOCAL_LOGV) { 2660 Log.v(TAG, "Surface " + surface + " unlockCanvasAndPost"); 2661 } 2662 } 2663 return true; 2664 } 2665 2666 /** 2667 * We want to draw a highlight around the current accessibility focused. 2668 * Since adding a style for all possible view is not a viable option we 2669 * have this specialized drawing method. 2670 * 2671 * Note: We are doing this here to be able to draw the highlight for 2672 * virtual views in addition to real ones. 2673 * 2674 * @param canvas The canvas on which to draw. 2675 */ 2676 private void drawAccessibilityFocusedDrawableIfNeeded(Canvas canvas) { 2677 final Rect bounds = mAttachInfo.mTmpInvalRect; 2678 if (getAccessibilityFocusedRect(bounds)) { 2679 final Drawable drawable = getAccessibilityFocusedDrawable(); 2680 if (drawable != null) { 2681 drawable.setBounds(bounds); 2682 drawable.draw(canvas); 2683 } 2684 } else if (mAttachInfo.mAccessibilityFocusDrawable != null) { 2685 mAttachInfo.mAccessibilityFocusDrawable.setBounds(0, 0, 0, 0); 2686 } 2687 } 2688 2689 private boolean getAccessibilityFocusedRect(Rect bounds) { 2690 final AccessibilityManager manager = AccessibilityManager.getInstance(mView.mContext); 2691 if (!manager.isEnabled() || !manager.isTouchExplorationEnabled()) { 2692 return false; 2693 } 2694 2695 final View host = mAccessibilityFocusedHost; 2696 if (host == null || host.mAttachInfo == null) { 2697 return false; 2698 } 2699 2700 final AccessibilityNodeProvider provider = host.getAccessibilityNodeProvider(); 2701 if (provider == null) { 2702 host.getBoundsOnScreen(bounds); 2703 } else if (mAccessibilityFocusedVirtualView != null) { 2704 mAccessibilityFocusedVirtualView.getBoundsInScreen(bounds); 2705 } else { 2706 return false; 2707 } 2708 2709 final AttachInfo attachInfo = mAttachInfo; 2710 bounds.offset(-attachInfo.mWindowLeft, -attachInfo.mWindowTop); 2711 bounds.intersect(0, 0, attachInfo.mViewRootImpl.mWidth, attachInfo.mViewRootImpl.mHeight); 2712 return !bounds.isEmpty(); 2713 } 2714 2715 private Drawable getAccessibilityFocusedDrawable() { 2716 // Lazily load the accessibility focus drawable. 2717 if (mAttachInfo.mAccessibilityFocusDrawable == null) { 2718 final TypedValue value = new TypedValue(); 2719 final boolean resolved = mView.mContext.getTheme().resolveAttribute( 2720 R.attr.accessibilityFocusedDrawable, value, true); 2721 if (resolved) { 2722 mAttachInfo.mAccessibilityFocusDrawable = 2723 mView.mContext.getDrawable(value.resourceId); 2724 } 2725 } 2726 return mAttachInfo.mAccessibilityFocusDrawable; 2727 } 2728 2729 /** 2730 * @hide 2731 */ 2732 public void setDrawDuringWindowsAnimating(boolean value) { 2733 mDrawDuringWindowsAnimating = value; 2734 if (value) { 2735 handleDispatchDoneAnimating(); 2736 } 2737 } 2738 2739 boolean scrollToRectOrFocus(Rect rectangle, boolean immediate) { 2740 final Rect ci = mAttachInfo.mContentInsets; 2741 final Rect vi = mAttachInfo.mVisibleInsets; 2742 int scrollY = 0; 2743 boolean handled = false; 2744 2745 if (vi.left > ci.left || vi.top > ci.top 2746 || vi.right > ci.right || vi.bottom > ci.bottom) { 2747 // We'll assume that we aren't going to change the scroll 2748 // offset, since we want to avoid that unless it is actually 2749 // going to make the focus visible... otherwise we scroll 2750 // all over the place. 2751 scrollY = mScrollY; 2752 // We can be called for two different situations: during a draw, 2753 // to update the scroll position if the focus has changed (in which 2754 // case 'rectangle' is null), or in response to a 2755 // requestChildRectangleOnScreen() call (in which case 'rectangle' 2756 // is non-null and we just want to scroll to whatever that 2757 // rectangle is). 2758 final View focus = mView.findFocus(); 2759 if (focus == null) { 2760 return false; 2761 } 2762 View lastScrolledFocus = (mLastScrolledFocus != null) ? mLastScrolledFocus.get() : null; 2763 if (focus != lastScrolledFocus) { 2764 // If the focus has changed, then ignore any requests to scroll 2765 // to a rectangle; first we want to make sure the entire focus 2766 // view is visible. 2767 rectangle = null; 2768 } 2769 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Eval scroll: focus=" + focus 2770 + " rectangle=" + rectangle + " ci=" + ci 2771 + " vi=" + vi); 2772 if (focus == lastScrolledFocus && !mScrollMayChange && rectangle == null) { 2773 // Optimization: if the focus hasn't changed since last 2774 // time, and no layout has happened, then just leave things 2775 // as they are. 2776 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Keeping scroll y=" 2777 + mScrollY + " vi=" + vi.toShortString()); 2778 } else { 2779 // We need to determine if the currently focused view is 2780 // within the visible part of the window and, if not, apply 2781 // a pan so it can be seen. 2782 mLastScrolledFocus = new WeakReference<View>(focus); 2783 mScrollMayChange = false; 2784 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Need to scroll?"); 2785 // Try to find the rectangle from the focus view. 2786 if (focus.getGlobalVisibleRect(mVisRect, null)) { 2787 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Root w=" 2788 + mView.getWidth() + " h=" + mView.getHeight() 2789 + " ci=" + ci.toShortString() 2790 + " vi=" + vi.toShortString()); 2791 if (rectangle == null) { 2792 focus.getFocusedRect(mTempRect); 2793 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Focus " + focus 2794 + ": focusRect=" + mTempRect.toShortString()); 2795 if (mView instanceof ViewGroup) { 2796 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 2797 focus, mTempRect); 2798 } 2799 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2800 "Focus in window: focusRect=" 2801 + mTempRect.toShortString() 2802 + " visRect=" + mVisRect.toShortString()); 2803 } else { 2804 mTempRect.set(rectangle); 2805 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2806 "Request scroll to rect: " 2807 + mTempRect.toShortString() 2808 + " visRect=" + mVisRect.toShortString()); 2809 } 2810 if (mTempRect.intersect(mVisRect)) { 2811 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2812 "Focus window visible rect: " 2813 + mTempRect.toShortString()); 2814 if (mTempRect.height() > 2815 (mView.getHeight()-vi.top-vi.bottom)) { 2816 // If the focus simply is not going to fit, then 2817 // best is probably just to leave things as-is. 2818 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2819 "Too tall; leaving scrollY=" + scrollY); 2820 } else if ((mTempRect.top-scrollY) < vi.top) { 2821 scrollY -= vi.top - (mTempRect.top-scrollY); 2822 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2823 "Top covered; scrollY=" + scrollY); 2824 } else if ((mTempRect.bottom-scrollY) 2825 > (mView.getHeight()-vi.bottom)) { 2826 scrollY += (mTempRect.bottom-scrollY) 2827 - (mView.getHeight()-vi.bottom); 2828 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2829 "Bottom covered; scrollY=" + scrollY); 2830 } 2831 handled = true; 2832 } 2833 } 2834 } 2835 } 2836 2837 if (scrollY != mScrollY) { 2838 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Pan scroll changed: old=" 2839 + mScrollY + " , new=" + scrollY); 2840 if (!immediate && mResizeBuffer == null) { 2841 if (mScroller == null) { 2842 mScroller = new Scroller(mView.getContext()); 2843 } 2844 mScroller.startScroll(0, mScrollY, 0, scrollY-mScrollY); 2845 } else if (mScroller != null) { 2846 mScroller.abortAnimation(); 2847 } 2848 mScrollY = scrollY; 2849 } 2850 2851 return handled; 2852 } 2853 2854 /** 2855 * @hide 2856 */ 2857 public View getAccessibilityFocusedHost() { 2858 return mAccessibilityFocusedHost; 2859 } 2860 2861 /** 2862 * @hide 2863 */ 2864 public AccessibilityNodeInfo getAccessibilityFocusedVirtualView() { 2865 return mAccessibilityFocusedVirtualView; 2866 } 2867 2868 void setAccessibilityFocus(View view, AccessibilityNodeInfo node) { 2869 // If we have a virtual view with accessibility focus we need 2870 // to clear the focus and invalidate the virtual view bounds. 2871 if (mAccessibilityFocusedVirtualView != null) { 2872 2873 AccessibilityNodeInfo focusNode = mAccessibilityFocusedVirtualView; 2874 View focusHost = mAccessibilityFocusedHost; 2875 2876 // Wipe the state of the current accessibility focus since 2877 // the call into the provider to clear accessibility focus 2878 // will fire an accessibility event which will end up calling 2879 // this method and we want to have clean state when this 2880 // invocation happens. 2881 mAccessibilityFocusedHost = null; 2882 mAccessibilityFocusedVirtualView = null; 2883 2884 // Clear accessibility focus on the host after clearing state since 2885 // this method may be reentrant. 2886 focusHost.clearAccessibilityFocusNoCallbacks(); 2887 2888 AccessibilityNodeProvider provider = focusHost.getAccessibilityNodeProvider(); 2889 if (provider != null) { 2890 // Invalidate the area of the cleared accessibility focus. 2891 focusNode.getBoundsInParent(mTempRect); 2892 focusHost.invalidate(mTempRect); 2893 // Clear accessibility focus in the virtual node. 2894 final int virtualNodeId = AccessibilityNodeInfo.getVirtualDescendantId( 2895 focusNode.getSourceNodeId()); 2896 provider.performAction(virtualNodeId, 2897 AccessibilityNodeInfo.ACTION_CLEAR_ACCESSIBILITY_FOCUS, null); 2898 } 2899 focusNode.recycle(); 2900 } 2901 if (mAccessibilityFocusedHost != null) { 2902 // Clear accessibility focus in the view. 2903 mAccessibilityFocusedHost.clearAccessibilityFocusNoCallbacks(); 2904 } 2905 2906 // Set the new focus host and node. 2907 mAccessibilityFocusedHost = view; 2908 mAccessibilityFocusedVirtualView = node; 2909 2910 if (mAttachInfo.mHardwareRenderer != null) { 2911 mAttachInfo.mHardwareRenderer.invalidateRoot(); 2912 } 2913 } 2914 2915 @Override 2916 public void requestChildFocus(View child, View focused) { 2917 if (DEBUG_INPUT_RESIZE) { 2918 Log.v(TAG, "Request child focus: focus now " + focused); 2919 } 2920 checkThread(); 2921 scheduleTraversals(); 2922 } 2923 2924 @Override 2925 public void clearChildFocus(View child) { 2926 if (DEBUG_INPUT_RESIZE) { 2927 Log.v(TAG, "Clearing child focus"); 2928 } 2929 checkThread(); 2930 scheduleTraversals(); 2931 } 2932 2933 @Override 2934 public ViewParent getParentForAccessibility() { 2935 return null; 2936 } 2937 2938 @Override 2939 public void focusableViewAvailable(View v) { 2940 checkThread(); 2941 if (mView != null) { 2942 if (!mView.hasFocus()) { 2943 v.requestFocus(); 2944 } else { 2945 // the one case where will transfer focus away from the current one 2946 // is if the current view is a view group that prefers to give focus 2947 // to its children first AND the view is a descendant of it. 2948 View focused = mView.findFocus(); 2949 if (focused instanceof ViewGroup) { 2950 ViewGroup group = (ViewGroup) focused; 2951 if (group.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 2952 && isViewDescendantOf(v, focused)) { 2953 v.requestFocus(); 2954 } 2955 } 2956 } 2957 } 2958 } 2959 2960 @Override 2961 public void recomputeViewAttributes(View child) { 2962 checkThread(); 2963 if (mView == child) { 2964 mAttachInfo.mRecomputeGlobalAttributes = true; 2965 if (!mWillDrawSoon) { 2966 scheduleTraversals(); 2967 } 2968 } 2969 } 2970 2971 void dispatchDetachedFromWindow() { 2972 if (mView != null && mView.mAttachInfo != null) { 2973 mAttachInfo.mTreeObserver.dispatchOnWindowAttachedChange(false); 2974 mView.dispatchDetachedFromWindow(); 2975 } 2976 2977 mAccessibilityInteractionConnectionManager.ensureNoConnection(); 2978 mAccessibilityManager.removeAccessibilityStateChangeListener( 2979 mAccessibilityInteractionConnectionManager); 2980 mAccessibilityManager.removeHighTextContrastStateChangeListener( 2981 mHighContrastTextManager); 2982 removeSendWindowContentChangedCallback(); 2983 2984 destroyHardwareRenderer(); 2985 2986 setAccessibilityFocus(null, null); 2987 2988 mView.assignParent(null); 2989 mView = null; 2990 mAttachInfo.mRootView = null; 2991 2992 mSurface.release(); 2993 2994 if (mInputQueueCallback != null && mInputQueue != null) { 2995 mInputQueueCallback.onInputQueueDestroyed(mInputQueue); 2996 mInputQueue.dispose(); 2997 mInputQueueCallback = null; 2998 mInputQueue = null; 2999 } 3000 if (mInputEventReceiver != null) { 3001 mInputEventReceiver.dispose(); 3002 mInputEventReceiver = null; 3003 } 3004 try { 3005 mWindowSession.remove(mWindow); 3006 } catch (RemoteException e) { 3007 } 3008 3009 // Dispose the input channel after removing the window so the Window Manager 3010 // doesn't interpret the input channel being closed as an abnormal termination. 3011 if (mInputChannel != null) { 3012 mInputChannel.dispose(); 3013 mInputChannel = null; 3014 } 3015 3016 mDisplayManager.unregisterDisplayListener(mDisplayListener); 3017 3018 unscheduleTraversals(); 3019 } 3020 3021 void updateConfiguration(Configuration config, boolean force) { 3022 if (DEBUG_CONFIGURATION) Log.v(TAG, 3023 "Applying new config to window " 3024 + mWindowAttributes.getTitle() 3025 + ": " + config); 3026 3027 CompatibilityInfo ci = mDisplayAdjustments.getCompatibilityInfo(); 3028 if (!ci.equals(CompatibilityInfo.DEFAULT_COMPATIBILITY_INFO)) { 3029 config = new Configuration(config); 3030 ci.applyToConfiguration(mNoncompatDensity, config); 3031 } 3032 3033 synchronized (sConfigCallbacks) { 3034 for (int i=sConfigCallbacks.size()-1; i>=0; i--) { 3035 sConfigCallbacks.get(i).onConfigurationChanged(config); 3036 } 3037 } 3038 if (mView != null) { 3039 // At this point the resources have been updated to 3040 // have the most recent config, whatever that is. Use 3041 // the one in them which may be newer. 3042 config = mView.getResources().getConfiguration(); 3043 if (force || mLastConfiguration.diff(config) != 0) { 3044 final int lastLayoutDirection = mLastConfiguration.getLayoutDirection(); 3045 final int currentLayoutDirection = config.getLayoutDirection(); 3046 mLastConfiguration.setTo(config); 3047 if (lastLayoutDirection != currentLayoutDirection && 3048 mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 3049 mView.setLayoutDirection(currentLayoutDirection); 3050 } 3051 mView.dispatchConfigurationChanged(config); 3052 } 3053 } 3054 } 3055 3056 /** 3057 * Return true if child is an ancestor of parent, (or equal to the parent). 3058 */ 3059 public static boolean isViewDescendantOf(View child, View parent) { 3060 if (child == parent) { 3061 return true; 3062 } 3063 3064 final ViewParent theParent = child.getParent(); 3065 return (theParent instanceof ViewGroup) && isViewDescendantOf((View) theParent, parent); 3066 } 3067 3068 private static void forceLayout(View view) { 3069 view.forceLayout(); 3070 if (view instanceof ViewGroup) { 3071 ViewGroup group = (ViewGroup) view; 3072 final int count = group.getChildCount(); 3073 for (int i = 0; i < count; i++) { 3074 forceLayout(group.getChildAt(i)); 3075 } 3076 } 3077 } 3078 3079 private final static int MSG_INVALIDATE = 1; 3080 private final static int MSG_INVALIDATE_RECT = 2; 3081 private final static int MSG_DIE = 3; 3082 private final static int MSG_RESIZED = 4; 3083 private final static int MSG_RESIZED_REPORT = 5; 3084 private final static int MSG_WINDOW_FOCUS_CHANGED = 6; 3085 private final static int MSG_DISPATCH_INPUT_EVENT = 7; 3086 private final static int MSG_DISPATCH_APP_VISIBILITY = 8; 3087 private final static int MSG_DISPATCH_GET_NEW_SURFACE = 9; 3088 private final static int MSG_DISPATCH_KEY_FROM_IME = 11; 3089 private final static int MSG_FINISH_INPUT_CONNECTION = 12; 3090 private final static int MSG_CHECK_FOCUS = 13; 3091 private final static int MSG_CLOSE_SYSTEM_DIALOGS = 14; 3092 private final static int MSG_DISPATCH_DRAG_EVENT = 15; 3093 private final static int MSG_DISPATCH_DRAG_LOCATION_EVENT = 16; 3094 private final static int MSG_DISPATCH_SYSTEM_UI_VISIBILITY = 17; 3095 private final static int MSG_UPDATE_CONFIGURATION = 18; 3096 private final static int MSG_PROCESS_INPUT_EVENTS = 19; 3097 private final static int MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST = 21; 3098 private final static int MSG_DISPATCH_DONE_ANIMATING = 22; 3099 private final static int MSG_INVALIDATE_WORLD = 23; 3100 private final static int MSG_WINDOW_MOVED = 24; 3101 private final static int MSG_SYNTHESIZE_INPUT_EVENT = 25; 3102 private final static int MSG_DISPATCH_WINDOW_SHOWN = 26; 3103 3104 final class ViewRootHandler extends Handler { 3105 @Override 3106 public String getMessageName(Message message) { 3107 switch (message.what) { 3108 case MSG_INVALIDATE: 3109 return "MSG_INVALIDATE"; 3110 case MSG_INVALIDATE_RECT: 3111 return "MSG_INVALIDATE_RECT"; 3112 case MSG_DIE: 3113 return "MSG_DIE"; 3114 case MSG_RESIZED: 3115 return "MSG_RESIZED"; 3116 case MSG_RESIZED_REPORT: 3117 return "MSG_RESIZED_REPORT"; 3118 case MSG_WINDOW_FOCUS_CHANGED: 3119 return "MSG_WINDOW_FOCUS_CHANGED"; 3120 case MSG_DISPATCH_INPUT_EVENT: 3121 return "MSG_DISPATCH_INPUT_EVENT"; 3122 case MSG_DISPATCH_APP_VISIBILITY: 3123 return "MSG_DISPATCH_APP_VISIBILITY"; 3124 case MSG_DISPATCH_GET_NEW_SURFACE: 3125 return "MSG_DISPATCH_GET_NEW_SURFACE"; 3126 case MSG_DISPATCH_KEY_FROM_IME: 3127 return "MSG_DISPATCH_KEY_FROM_IME"; 3128 case MSG_FINISH_INPUT_CONNECTION: 3129 return "MSG_FINISH_INPUT_CONNECTION"; 3130 case MSG_CHECK_FOCUS: 3131 return "MSG_CHECK_FOCUS"; 3132 case MSG_CLOSE_SYSTEM_DIALOGS: 3133 return "MSG_CLOSE_SYSTEM_DIALOGS"; 3134 case MSG_DISPATCH_DRAG_EVENT: 3135 return "MSG_DISPATCH_DRAG_EVENT"; 3136 case MSG_DISPATCH_DRAG_LOCATION_EVENT: 3137 return "MSG_DISPATCH_DRAG_LOCATION_EVENT"; 3138 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: 3139 return "MSG_DISPATCH_SYSTEM_UI_VISIBILITY"; 3140 case MSG_UPDATE_CONFIGURATION: 3141 return "MSG_UPDATE_CONFIGURATION"; 3142 case MSG_PROCESS_INPUT_EVENTS: 3143 return "MSG_PROCESS_INPUT_EVENTS"; 3144 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: 3145 return "MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST"; 3146 case MSG_DISPATCH_DONE_ANIMATING: 3147 return "MSG_DISPATCH_DONE_ANIMATING"; 3148 case MSG_WINDOW_MOVED: 3149 return "MSG_WINDOW_MOVED"; 3150 case MSG_SYNTHESIZE_INPUT_EVENT: 3151 return "MSG_SYNTHESIZE_INPUT_EVENT"; 3152 case MSG_DISPATCH_WINDOW_SHOWN: 3153 return "MSG_DISPATCH_WINDOW_SHOWN"; 3154 } 3155 return super.getMessageName(message); 3156 } 3157 3158 @Override 3159 public void handleMessage(Message msg) { 3160 switch (msg.what) { 3161 case MSG_INVALIDATE: 3162 ((View) msg.obj).invalidate(); 3163 break; 3164 case MSG_INVALIDATE_RECT: 3165 final View.AttachInfo.InvalidateInfo info = (View.AttachInfo.InvalidateInfo) msg.obj; 3166 info.target.invalidate(info.left, info.top, info.right, info.bottom); 3167 info.recycle(); 3168 break; 3169 case MSG_PROCESS_INPUT_EVENTS: 3170 mProcessInputEventsScheduled = false; 3171 doProcessInputEvents(); 3172 break; 3173 case MSG_DISPATCH_APP_VISIBILITY: 3174 handleAppVisibility(msg.arg1 != 0); 3175 break; 3176 case MSG_DISPATCH_GET_NEW_SURFACE: 3177 handleGetNewSurface(); 3178 break; 3179 case MSG_RESIZED: { 3180 // Recycled in the fall through... 3181 SomeArgs args = (SomeArgs) msg.obj; 3182 if (mWinFrame.equals(args.arg1) 3183 && mPendingOverscanInsets.equals(args.arg5) 3184 && mPendingContentInsets.equals(args.arg2) 3185 && mPendingStableInsets.equals(args.arg6) 3186 && mPendingVisibleInsets.equals(args.arg3) 3187 && args.arg4 == null) { 3188 break; 3189 } 3190 } // fall through... 3191 case MSG_RESIZED_REPORT: 3192 if (mAdded) { 3193 SomeArgs args = (SomeArgs) msg.obj; 3194 3195 Configuration config = (Configuration) args.arg4; 3196 if (config != null) { 3197 updateConfiguration(config, false); 3198 } 3199 3200 mWinFrame.set((Rect) args.arg1); 3201 mPendingOverscanInsets.set((Rect) args.arg5); 3202 mPendingContentInsets.set((Rect) args.arg2); 3203 mPendingStableInsets.set((Rect) args.arg6); 3204 mPendingVisibleInsets.set((Rect) args.arg3); 3205 3206 args.recycle(); 3207 3208 if (msg.what == MSG_RESIZED_REPORT) { 3209 mReportNextDraw = true; 3210 } 3211 3212 if (mView != null) { 3213 forceLayout(mView); 3214 } 3215 3216 requestLayout(); 3217 } 3218 break; 3219 case MSG_WINDOW_MOVED: 3220 if (mAdded) { 3221 final int w = mWinFrame.width(); 3222 final int h = mWinFrame.height(); 3223 final int l = msg.arg1; 3224 final int t = msg.arg2; 3225 mWinFrame.left = l; 3226 mWinFrame.right = l + w; 3227 mWinFrame.top = t; 3228 mWinFrame.bottom = t + h; 3229 3230 if (mView != null) { 3231 forceLayout(mView); 3232 } 3233 requestLayout(); 3234 } 3235 break; 3236 case MSG_WINDOW_FOCUS_CHANGED: { 3237 if (mAdded) { 3238 boolean hasWindowFocus = msg.arg1 != 0; 3239 mAttachInfo.mHasWindowFocus = hasWindowFocus; 3240 3241 profileRendering(hasWindowFocus); 3242 3243 if (hasWindowFocus) { 3244 boolean inTouchMode = msg.arg2 != 0; 3245 ensureTouchModeLocally(inTouchMode); 3246 3247 if (mAttachInfo.mHardwareRenderer != null && mSurface.isValid()){ 3248 mFullRedrawNeeded = true; 3249 try { 3250 final WindowManager.LayoutParams lp = mWindowAttributes; 3251 final Rect surfaceInsets = lp != null ? lp.surfaceInsets : null; 3252 mAttachInfo.mHardwareRenderer.initializeIfNeeded( 3253 mWidth, mHeight, mSurface, surfaceInsets); 3254 } catch (OutOfResourcesException e) { 3255 Log.e(TAG, "OutOfResourcesException locking surface", e); 3256 try { 3257 if (!mWindowSession.outOfMemory(mWindow)) { 3258 Slog.w(TAG, "No processes killed for memory; killing self"); 3259 Process.killProcess(Process.myPid()); 3260 } 3261 } catch (RemoteException ex) { 3262 } 3263 // Retry in a bit. 3264 sendMessageDelayed(obtainMessage(msg.what, msg.arg1, msg.arg2), 500); 3265 return; 3266 } 3267 } 3268 } 3269 3270 mLastWasImTarget = WindowManager.LayoutParams 3271 .mayUseInputMethod(mWindowAttributes.flags); 3272 3273 InputMethodManager imm = InputMethodManager.peekInstance(); 3274 if (mView != null) { 3275 if (hasWindowFocus && imm != null && mLastWasImTarget && 3276 !isInLocalFocusMode()) { 3277 imm.startGettingWindowFocus(mView); 3278 } 3279 mAttachInfo.mKeyDispatchState.reset(); 3280 mView.dispatchWindowFocusChanged(hasWindowFocus); 3281 mAttachInfo.mTreeObserver.dispatchOnWindowFocusChange(hasWindowFocus); 3282 } 3283 3284 // Note: must be done after the focus change callbacks, 3285 // so all of the view state is set up correctly. 3286 if (hasWindowFocus) { 3287 if (imm != null && mLastWasImTarget && !isInLocalFocusMode()) { 3288 imm.onWindowFocus(mView, mView.findFocus(), 3289 mWindowAttributes.softInputMode, 3290 !mHasHadWindowFocus, mWindowAttributes.flags); 3291 } 3292 // Clear the forward bit. We can just do this directly, since 3293 // the window manager doesn't care about it. 3294 mWindowAttributes.softInputMode &= 3295 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3296 ((WindowManager.LayoutParams)mView.getLayoutParams()) 3297 .softInputMode &= 3298 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3299 mHasHadWindowFocus = true; 3300 } 3301 3302 if (mView != null && mAccessibilityManager.isEnabled()) { 3303 if (hasWindowFocus) { 3304 mView.sendAccessibilityEvent( 3305 AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 3306 } 3307 } 3308 } 3309 } break; 3310 case MSG_DIE: 3311 doDie(); 3312 break; 3313 case MSG_DISPATCH_INPUT_EVENT: { 3314 SomeArgs args = (SomeArgs)msg.obj; 3315 InputEvent event = (InputEvent)args.arg1; 3316 InputEventReceiver receiver = (InputEventReceiver)args.arg2; 3317 enqueueInputEvent(event, receiver, 0, true); 3318 args.recycle(); 3319 } break; 3320 case MSG_SYNTHESIZE_INPUT_EVENT: { 3321 InputEvent event = (InputEvent)msg.obj; 3322 enqueueInputEvent(event, null, QueuedInputEvent.FLAG_UNHANDLED, true); 3323 } break; 3324 case MSG_DISPATCH_KEY_FROM_IME: { 3325 if (LOCAL_LOGV) Log.v( 3326 TAG, "Dispatching key " 3327 + msg.obj + " from IME to " + mView); 3328 KeyEvent event = (KeyEvent)msg.obj; 3329 if ((event.getFlags()&KeyEvent.FLAG_FROM_SYSTEM) != 0) { 3330 // The IME is trying to say this event is from the 3331 // system! Bad bad bad! 3332 //noinspection UnusedAssignment 3333 event = KeyEvent.changeFlags(event, event.getFlags() & 3334 ~KeyEvent.FLAG_FROM_SYSTEM); 3335 } 3336 enqueueInputEvent(event, null, QueuedInputEvent.FLAG_DELIVER_POST_IME, true); 3337 } break; 3338 case MSG_FINISH_INPUT_CONNECTION: { 3339 InputMethodManager imm = InputMethodManager.peekInstance(); 3340 if (imm != null) { 3341 imm.reportFinishInputConnection((InputConnection)msg.obj); 3342 } 3343 } break; 3344 case MSG_CHECK_FOCUS: { 3345 InputMethodManager imm = InputMethodManager.peekInstance(); 3346 if (imm != null) { 3347 imm.checkFocus(); 3348 } 3349 } break; 3350 case MSG_CLOSE_SYSTEM_DIALOGS: { 3351 if (mView != null) { 3352 mView.onCloseSystemDialogs((String)msg.obj); 3353 } 3354 } break; 3355 case MSG_DISPATCH_DRAG_EVENT: 3356 case MSG_DISPATCH_DRAG_LOCATION_EVENT: { 3357 DragEvent event = (DragEvent)msg.obj; 3358 event.mLocalState = mLocalDragState; // only present when this app called startDrag() 3359 handleDragEvent(event); 3360 } break; 3361 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: { 3362 handleDispatchSystemUiVisibilityChanged((SystemUiVisibilityInfo) msg.obj); 3363 } break; 3364 case MSG_UPDATE_CONFIGURATION: { 3365 Configuration config = (Configuration)msg.obj; 3366 if (config.isOtherSeqNewer(mLastConfiguration)) { 3367 config = mLastConfiguration; 3368 } 3369 updateConfiguration(config, false); 3370 } break; 3371 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: { 3372 setAccessibilityFocus(null, null); 3373 } break; 3374 case MSG_DISPATCH_DONE_ANIMATING: { 3375 handleDispatchDoneAnimating(); 3376 } break; 3377 case MSG_INVALIDATE_WORLD: { 3378 if (mView != null) { 3379 invalidateWorld(mView); 3380 } 3381 } break; 3382 case MSG_DISPATCH_WINDOW_SHOWN: { 3383 handleDispatchWindowShown(); 3384 } 3385 } 3386 } 3387 } 3388 3389 final ViewRootHandler mHandler = new ViewRootHandler(); 3390 3391 /** 3392 * Something in the current window tells us we need to change the touch mode. For 3393 * example, we are not in touch mode, and the user touches the screen. 3394 * 3395 * If the touch mode has changed, tell the window manager, and handle it locally. 3396 * 3397 * @param inTouchMode Whether we want to be in touch mode. 3398 * @return True if the touch mode changed and focus changed was changed as a result 3399 */ 3400 boolean ensureTouchMode(boolean inTouchMode) { 3401 if (DBG) Log.d("touchmode", "ensureTouchMode(" + inTouchMode + "), current " 3402 + "touch mode is " + mAttachInfo.mInTouchMode); 3403 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3404 3405 // tell the window manager 3406 try { 3407 if (!isInLocalFocusMode()) { 3408 mWindowSession.setInTouchMode(inTouchMode); 3409 } 3410 } catch (RemoteException e) { 3411 throw new RuntimeException(e); 3412 } 3413 3414 // handle the change 3415 return ensureTouchModeLocally(inTouchMode); 3416 } 3417 3418 /** 3419 * Ensure that the touch mode for this window is set, and if it is changing, 3420 * take the appropriate action. 3421 * @param inTouchMode Whether we want to be in touch mode. 3422 * @return True if the touch mode changed and focus changed was changed as a result 3423 */ 3424 private boolean ensureTouchModeLocally(boolean inTouchMode) { 3425 if (DBG) Log.d("touchmode", "ensureTouchModeLocally(" + inTouchMode + "), current " 3426 + "touch mode is " + mAttachInfo.mInTouchMode); 3427 3428 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3429 3430 mAttachInfo.mInTouchMode = inTouchMode; 3431 mAttachInfo.mTreeObserver.dispatchOnTouchModeChanged(inTouchMode); 3432 3433 return (inTouchMode) ? enterTouchMode() : leaveTouchMode(); 3434 } 3435 3436 private boolean enterTouchMode() { 3437 if (mView != null && mView.hasFocus()) { 3438 // note: not relying on mFocusedView here because this could 3439 // be when the window is first being added, and mFocused isn't 3440 // set yet. 3441 final View focused = mView.findFocus(); 3442 if (focused != null && !focused.isFocusableInTouchMode()) { 3443 final ViewGroup ancestorToTakeFocus = findAncestorToTakeFocusInTouchMode(focused); 3444 if (ancestorToTakeFocus != null) { 3445 // there is an ancestor that wants focus after its 3446 // descendants that is focusable in touch mode.. give it 3447 // focus 3448 return ancestorToTakeFocus.requestFocus(); 3449 } else { 3450 // There's nothing to focus. Clear and propagate through the 3451 // hierarchy, but don't attempt to place new focus. 3452 focused.clearFocusInternal(null, true, false); 3453 return true; 3454 } 3455 } 3456 } 3457 return false; 3458 } 3459 3460 /** 3461 * Find an ancestor of focused that wants focus after its descendants and is 3462 * focusable in touch mode. 3463 * @param focused The currently focused view. 3464 * @return An appropriate view, or null if no such view exists. 3465 */ 3466 private static ViewGroup findAncestorToTakeFocusInTouchMode(View focused) { 3467 ViewParent parent = focused.getParent(); 3468 while (parent instanceof ViewGroup) { 3469 final ViewGroup vgParent = (ViewGroup) parent; 3470 if (vgParent.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 3471 && vgParent.isFocusableInTouchMode()) { 3472 return vgParent; 3473 } 3474 if (vgParent.isRootNamespace()) { 3475 return null; 3476 } else { 3477 parent = vgParent.getParent(); 3478 } 3479 } 3480 return null; 3481 } 3482 3483 private boolean leaveTouchMode() { 3484 if (mView != null) { 3485 if (mView.hasFocus()) { 3486 View focusedView = mView.findFocus(); 3487 if (!(focusedView instanceof ViewGroup)) { 3488 // some view has focus, let it keep it 3489 return false; 3490 } else if (((ViewGroup) focusedView).getDescendantFocusability() != 3491 ViewGroup.FOCUS_AFTER_DESCENDANTS) { 3492 // some view group has focus, and doesn't prefer its children 3493 // over itself for focus, so let them keep it. 3494 return false; 3495 } 3496 } 3497 3498 // find the best view to give focus to in this brave new non-touch-mode 3499 // world 3500 final View focused = focusSearch(null, View.FOCUS_DOWN); 3501 if (focused != null) { 3502 return focused.requestFocus(View.FOCUS_DOWN); 3503 } 3504 } 3505 return false; 3506 } 3507 3508 /** 3509 * Base class for implementing a stage in the chain of responsibility 3510 * for processing input events. 3511 * <p> 3512 * Events are delivered to the stage by the {@link #deliver} method. The stage 3513 * then has the choice of finishing the event or forwarding it to the next stage. 3514 * </p> 3515 */ 3516 abstract class InputStage { 3517 private final InputStage mNext; 3518 3519 protected static final int FORWARD = 0; 3520 protected static final int FINISH_HANDLED = 1; 3521 protected static final int FINISH_NOT_HANDLED = 2; 3522 3523 /** 3524 * Creates an input stage. 3525 * @param next The next stage to which events should be forwarded. 3526 */ 3527 public InputStage(InputStage next) { 3528 mNext = next; 3529 } 3530 3531 /** 3532 * Delivers an event to be processed. 3533 */ 3534 public final void deliver(QueuedInputEvent q) { 3535 if ((q.mFlags & QueuedInputEvent.FLAG_FINISHED) != 0) { 3536 forward(q); 3537 } else if (shouldDropInputEvent(q)) { 3538 finish(q, false); 3539 } else { 3540 apply(q, onProcess(q)); 3541 } 3542 } 3543 3544 /** 3545 * Marks the the input event as finished then forwards it to the next stage. 3546 */ 3547 protected void finish(QueuedInputEvent q, boolean handled) { 3548 q.mFlags |= QueuedInputEvent.FLAG_FINISHED; 3549 if (handled) { 3550 q.mFlags |= QueuedInputEvent.FLAG_FINISHED_HANDLED; 3551 } 3552 forward(q); 3553 } 3554 3555 /** 3556 * Forwards the event to the next stage. 3557 */ 3558 protected void forward(QueuedInputEvent q) { 3559 onDeliverToNext(q); 3560 } 3561 3562 /** 3563 * Applies a result code from {@link #onProcess} to the specified event. 3564 */ 3565 protected void apply(QueuedInputEvent q, int result) { 3566 if (result == FORWARD) { 3567 forward(q); 3568 } else if (result == FINISH_HANDLED) { 3569 finish(q, true); 3570 } else if (result == FINISH_NOT_HANDLED) { 3571 finish(q, false); 3572 } else { 3573 throw new IllegalArgumentException("Invalid result: " + result); 3574 } 3575 } 3576 3577 /** 3578 * Called when an event is ready to be processed. 3579 * @return A result code indicating how the event was handled. 3580 */ 3581 protected int onProcess(QueuedInputEvent q) { 3582 return FORWARD; 3583 } 3584 3585 /** 3586 * Called when an event is being delivered to the next stage. 3587 */ 3588 protected void onDeliverToNext(QueuedInputEvent q) { 3589 if (DEBUG_INPUT_STAGES) { 3590 Log.v(TAG, "Done with " + getClass().getSimpleName() + ". " + q); 3591 } 3592 if (mNext != null) { 3593 mNext.deliver(q); 3594 } else { 3595 finishInputEvent(q); 3596 } 3597 } 3598 3599 protected boolean shouldDropInputEvent(QueuedInputEvent q) { 3600 if (mView == null || !mAdded) { 3601 Slog.w(TAG, "Dropping event due to root view being removed: " + q.mEvent); 3602 return true; 3603 } else if ((!mAttachInfo.mHasWindowFocus || mStopped) 3604 && !q.mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER)) { 3605 // This is a focus event and the window doesn't currently have input focus or 3606 // has stopped. This could be an event that came back from the previous stage 3607 // but the window has lost focus or stopped in the meantime. 3608 if (isTerminalInputEvent(q.mEvent)) { 3609 // Don't drop terminal input events, however mark them as canceled. 3610 q.mEvent.cancel(); 3611 Slog.w(TAG, "Cancelling event due to no window focus: " + q.mEvent); 3612 return false; 3613 } 3614 3615 // Drop non-terminal input events. 3616 Slog.w(TAG, "Dropping event due to no window focus: " + q.mEvent); 3617 return true; 3618 } 3619 return false; 3620 } 3621 3622 void dump(String prefix, PrintWriter writer) { 3623 if (mNext != null) { 3624 mNext.dump(prefix, writer); 3625 } 3626 } 3627 } 3628 3629 /** 3630 * Base class for implementing an input pipeline stage that supports 3631 * asynchronous and out-of-order processing of input events. 3632 * <p> 3633 * In addition to what a normal input stage can do, an asynchronous 3634 * input stage may also defer an input event that has been delivered to it 3635 * and finish or forward it later. 3636 * </p> 3637 */ 3638 abstract class AsyncInputStage extends InputStage { 3639 private final String mTraceCounter; 3640 3641 private QueuedInputEvent mQueueHead; 3642 private QueuedInputEvent mQueueTail; 3643 private int mQueueLength; 3644 3645 protected static final int DEFER = 3; 3646 3647 /** 3648 * Creates an asynchronous input stage. 3649 * @param next The next stage to which events should be forwarded. 3650 * @param traceCounter The name of a counter to record the size of 3651 * the queue of pending events. 3652 */ 3653 public AsyncInputStage(InputStage next, String traceCounter) { 3654 super(next); 3655 mTraceCounter = traceCounter; 3656 } 3657 3658 /** 3659 * Marks the event as deferred, which is to say that it will be handled 3660 * asynchronously. The caller is responsible for calling {@link #forward} 3661 * or {@link #finish} later when it is done handling the event. 3662 */ 3663 protected void defer(QueuedInputEvent q) { 3664 q.mFlags |= QueuedInputEvent.FLAG_DEFERRED; 3665 enqueue(q); 3666 } 3667 3668 @Override 3669 protected void forward(QueuedInputEvent q) { 3670 // Clear the deferred flag. 3671 q.mFlags &= ~QueuedInputEvent.FLAG_DEFERRED; 3672 3673 // Fast path if the queue is empty. 3674 QueuedInputEvent curr = mQueueHead; 3675 if (curr == null) { 3676 super.forward(q); 3677 return; 3678 } 3679 3680 // Determine whether the event must be serialized behind any others 3681 // before it can be delivered to the next stage. This is done because 3682 // deferred events might be handled out of order by the stage. 3683 final int deviceId = q.mEvent.getDeviceId(); 3684 QueuedInputEvent prev = null; 3685 boolean blocked = false; 3686 while (curr != null && curr != q) { 3687 if (!blocked && deviceId == curr.mEvent.getDeviceId()) { 3688 blocked = true; 3689 } 3690 prev = curr; 3691 curr = curr.mNext; 3692 } 3693 3694 // If the event is blocked, then leave it in the queue to be delivered later. 3695 // Note that the event might not yet be in the queue if it was not previously 3696 // deferred so we will enqueue it if needed. 3697 if (blocked) { 3698 if (curr == null) { 3699 enqueue(q); 3700 } 3701 return; 3702 } 3703 3704 // The event is not blocked. Deliver it immediately. 3705 if (curr != null) { 3706 curr = curr.mNext; 3707 dequeue(q, prev); 3708 } 3709 super.forward(q); 3710 3711 // Dequeuing this event may have unblocked successors. Deliver them. 3712 while (curr != null) { 3713 if (deviceId == curr.mEvent.getDeviceId()) { 3714 if ((curr.mFlags & QueuedInputEvent.FLAG_DEFERRED) != 0) { 3715 break; 3716 } 3717 QueuedInputEvent next = curr.mNext; 3718 dequeue(curr, prev); 3719 super.forward(curr); 3720 curr = next; 3721 } else { 3722 prev = curr; 3723 curr = curr.mNext; 3724 } 3725 } 3726 } 3727 3728 @Override 3729 protected void apply(QueuedInputEvent q, int result) { 3730 if (result == DEFER) { 3731 defer(q); 3732 } else { 3733 super.apply(q, result); 3734 } 3735 } 3736 3737 private void enqueue(QueuedInputEvent q) { 3738 if (mQueueTail == null) { 3739 mQueueHead = q; 3740 mQueueTail = q; 3741 } else { 3742 mQueueTail.mNext = q; 3743 mQueueTail = q; 3744 } 3745 3746 mQueueLength += 1; 3747 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 3748 } 3749 3750 private void dequeue(QueuedInputEvent q, QueuedInputEvent prev) { 3751 if (prev == null) { 3752 mQueueHead = q.mNext; 3753 } else { 3754 prev.mNext = q.mNext; 3755 } 3756 if (mQueueTail == q) { 3757 mQueueTail = prev; 3758 } 3759 q.mNext = null; 3760 3761 mQueueLength -= 1; 3762 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 3763 } 3764 3765 @Override 3766 void dump(String prefix, PrintWriter writer) { 3767 writer.print(prefix); 3768 writer.print(getClass().getName()); 3769 writer.print(": mQueueLength="); 3770 writer.println(mQueueLength); 3771 3772 super.dump(prefix, writer); 3773 } 3774 } 3775 3776 /** 3777 * Delivers pre-ime input events to a native activity. 3778 * Does not support pointer events. 3779 */ 3780 final class NativePreImeInputStage extends AsyncInputStage 3781 implements InputQueue.FinishedInputEventCallback { 3782 public NativePreImeInputStage(InputStage next, String traceCounter) { 3783 super(next, traceCounter); 3784 } 3785 3786 @Override 3787 protected int onProcess(QueuedInputEvent q) { 3788 if (mInputQueue != null && q.mEvent instanceof KeyEvent) { 3789 mInputQueue.sendInputEvent(q.mEvent, q, true, this); 3790 return DEFER; 3791 } 3792 return FORWARD; 3793 } 3794 3795 @Override 3796 public void onFinishedInputEvent(Object token, boolean handled) { 3797 QueuedInputEvent q = (QueuedInputEvent)token; 3798 if (handled) { 3799 finish(q, true); 3800 return; 3801 } 3802 forward(q); 3803 } 3804 } 3805 3806 /** 3807 * Delivers pre-ime input events to the view hierarchy. 3808 * Does not support pointer events. 3809 */ 3810 final class ViewPreImeInputStage extends InputStage { 3811 public ViewPreImeInputStage(InputStage next) { 3812 super(next); 3813 } 3814 3815 @Override 3816 protected int onProcess(QueuedInputEvent q) { 3817 if (q.mEvent instanceof KeyEvent) { 3818 return processKeyEvent(q); 3819 } 3820 return FORWARD; 3821 } 3822 3823 private int processKeyEvent(QueuedInputEvent q) { 3824 final KeyEvent event = (KeyEvent)q.mEvent; 3825 if (mView.dispatchKeyEventPreIme(event)) { 3826 return FINISH_HANDLED; 3827 } 3828 return FORWARD; 3829 } 3830 } 3831 3832 /** 3833 * Delivers input events to the ime. 3834 * Does not support pointer events. 3835 */ 3836 final class ImeInputStage extends AsyncInputStage 3837 implements InputMethodManager.FinishedInputEventCallback { 3838 public ImeInputStage(InputStage next, String traceCounter) { 3839 super(next, traceCounter); 3840 } 3841 3842 @Override 3843 protected int onProcess(QueuedInputEvent q) { 3844 if (mLastWasImTarget && !isInLocalFocusMode()) { 3845 InputMethodManager imm = InputMethodManager.peekInstance(); 3846 if (imm != null) { 3847 final InputEvent event = q.mEvent; 3848 if (DEBUG_IMF) Log.v(TAG, "Sending input event to IME: " + event); 3849 int result = imm.dispatchInputEvent(event, q, this, mHandler); 3850 if (result == InputMethodManager.DISPATCH_HANDLED) { 3851 return FINISH_HANDLED; 3852 } else if (result == InputMethodManager.DISPATCH_NOT_HANDLED) { 3853 // The IME could not handle it, so skip along to the next InputStage 3854 return FORWARD; 3855 } else { 3856 return DEFER; // callback will be invoked later 3857 } 3858 } 3859 } 3860 return FORWARD; 3861 } 3862 3863 @Override 3864 public void onFinishedInputEvent(Object token, boolean handled) { 3865 QueuedInputEvent q = (QueuedInputEvent)token; 3866 if (handled) { 3867 finish(q, true); 3868 return; 3869 } 3870 forward(q); 3871 } 3872 } 3873 3874 /** 3875 * Performs early processing of post-ime input events. 3876 */ 3877 final class EarlyPostImeInputStage extends InputStage { 3878 public EarlyPostImeInputStage(InputStage next) { 3879 super(next); 3880 } 3881 3882 @Override 3883 protected int onProcess(QueuedInputEvent q) { 3884 if (q.mEvent instanceof KeyEvent) { 3885 return processKeyEvent(q); 3886 } else { 3887 final int source = q.mEvent.getSource(); 3888 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 3889 return processPointerEvent(q); 3890 } 3891 } 3892 return FORWARD; 3893 } 3894 3895 private int processKeyEvent(QueuedInputEvent q) { 3896 final KeyEvent event = (KeyEvent)q.mEvent; 3897 3898 // If the key's purpose is to exit touch mode then we consume it 3899 // and consider it handled. 3900 if (checkForLeavingTouchModeAndConsume(event)) { 3901 return FINISH_HANDLED; 3902 } 3903 3904 // Make sure the fallback event policy sees all keys that will be 3905 // delivered to the view hierarchy. 3906 mFallbackEventHandler.preDispatchKeyEvent(event); 3907 return FORWARD; 3908 } 3909 3910 private int processPointerEvent(QueuedInputEvent q) { 3911 final MotionEvent event = (MotionEvent)q.mEvent; 3912 3913 // Translate the pointer event for compatibility, if needed. 3914 if (mTranslator != null) { 3915 mTranslator.translateEventInScreenToAppWindow(event); 3916 } 3917 3918 // Enter touch mode on down or scroll. 3919 final int action = event.getAction(); 3920 if (action == MotionEvent.ACTION_DOWN || action == MotionEvent.ACTION_SCROLL) { 3921 ensureTouchMode(true); 3922 } 3923 3924 // Offset the scroll position. 3925 if (mCurScrollY != 0) { 3926 event.offsetLocation(0, mCurScrollY); 3927 } 3928 3929 // Remember the touch position for possible drag-initiation. 3930 if (event.isTouchEvent()) { 3931 mLastTouchPoint.x = event.getRawX(); 3932 mLastTouchPoint.y = event.getRawY(); 3933 } 3934 return FORWARD; 3935 } 3936 } 3937 3938 /** 3939 * Delivers post-ime input events to a native activity. 3940 */ 3941 final class NativePostImeInputStage extends AsyncInputStage 3942 implements InputQueue.FinishedInputEventCallback { 3943 public NativePostImeInputStage(InputStage next, String traceCounter) { 3944 super(next, traceCounter); 3945 } 3946 3947 @Override 3948 protected int onProcess(QueuedInputEvent q) { 3949 if (mInputQueue != null) { 3950 mInputQueue.sendInputEvent(q.mEvent, q, false, this); 3951 return DEFER; 3952 } 3953 return FORWARD; 3954 } 3955 3956 @Override 3957 public void onFinishedInputEvent(Object token, boolean handled) { 3958 QueuedInputEvent q = (QueuedInputEvent)token; 3959 if (handled) { 3960 finish(q, true); 3961 return; 3962 } 3963 forward(q); 3964 } 3965 } 3966 3967 /** 3968 * Delivers post-ime input events to the view hierarchy. 3969 */ 3970 final class ViewPostImeInputStage extends InputStage { 3971 public ViewPostImeInputStage(InputStage next) { 3972 super(next); 3973 } 3974 3975 @Override 3976 protected int onProcess(QueuedInputEvent q) { 3977 if (q.mEvent instanceof KeyEvent) { 3978 return processKeyEvent(q); 3979 } else { 3980 // If delivering a new non-key event, make sure the window is 3981 // now allowed to start updating. 3982 handleDispatchDoneAnimating(); 3983 final int source = q.mEvent.getSource(); 3984 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 3985 return processPointerEvent(q); 3986 } else if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 3987 return processTrackballEvent(q); 3988 } else { 3989 return processGenericMotionEvent(q); 3990 } 3991 } 3992 } 3993 3994 @Override 3995 protected void onDeliverToNext(QueuedInputEvent q) { 3996 if (mUnbufferedInputDispatch 3997 && q.mEvent instanceof MotionEvent 3998 && ((MotionEvent)q.mEvent).isTouchEvent() 3999 && isTerminalInputEvent(q.mEvent)) { 4000 mUnbufferedInputDispatch = false; 4001 scheduleConsumeBatchedInput(); 4002 } 4003 super.onDeliverToNext(q); 4004 } 4005 4006 private int processKeyEvent(QueuedInputEvent q) { 4007 final KeyEvent event = (KeyEvent)q.mEvent; 4008 4009 if (event.getAction() != KeyEvent.ACTION_UP) { 4010 // If delivering a new key event, make sure the window is 4011 // now allowed to start updating. 4012 handleDispatchDoneAnimating(); 4013 } 4014 4015 // Deliver the key to the view hierarchy. 4016 if (mView.dispatchKeyEvent(event)) { 4017 return FINISH_HANDLED; 4018 } 4019 4020 if (shouldDropInputEvent(q)) { 4021 return FINISH_NOT_HANDLED; 4022 } 4023 4024 // If the Control modifier is held, try to interpret the key as a shortcut. 4025 if (event.getAction() == KeyEvent.ACTION_DOWN 4026 && event.isCtrlPressed() 4027 && event.getRepeatCount() == 0 4028 && !KeyEvent.isModifierKey(event.getKeyCode())) { 4029 if (mView.dispatchKeyShortcutEvent(event)) { 4030 return FINISH_HANDLED; 4031 } 4032 if (shouldDropInputEvent(q)) { 4033 return FINISH_NOT_HANDLED; 4034 } 4035 } 4036 4037 // Apply the fallback event policy. 4038 if (mFallbackEventHandler.dispatchKeyEvent(event)) { 4039 return FINISH_HANDLED; 4040 } 4041 if (shouldDropInputEvent(q)) { 4042 return FINISH_NOT_HANDLED; 4043 } 4044 4045 // Handle automatic focus changes. 4046 if (event.getAction() == KeyEvent.ACTION_DOWN) { 4047 int direction = 0; 4048 switch (event.getKeyCode()) { 4049 case KeyEvent.KEYCODE_DPAD_LEFT: 4050 if (event.hasNoModifiers()) { 4051 direction = View.FOCUS_LEFT; 4052 } 4053 break; 4054 case KeyEvent.KEYCODE_DPAD_RIGHT: 4055 if (event.hasNoModifiers()) { 4056 direction = View.FOCUS_RIGHT; 4057 } 4058 break; 4059 case KeyEvent.KEYCODE_DPAD_UP: 4060 if (event.hasNoModifiers()) { 4061 direction = View.FOCUS_UP; 4062 } 4063 break; 4064 case KeyEvent.KEYCODE_DPAD_DOWN: 4065 if (event.hasNoModifiers()) { 4066 direction = View.FOCUS_DOWN; 4067 } 4068 break; 4069 case KeyEvent.KEYCODE_TAB: 4070 if (event.hasNoModifiers()) { 4071 direction = View.FOCUS_FORWARD; 4072 } else if (event.hasModifiers(KeyEvent.META_SHIFT_ON)) { 4073 direction = View.FOCUS_BACKWARD; 4074 } 4075 break; 4076 } 4077 if (direction != 0) { 4078 View focused = mView.findFocus(); 4079 if (focused != null) { 4080 View v = focused.focusSearch(direction); 4081 if (v != null && v != focused) { 4082 // do the math the get the interesting rect 4083 // of previous focused into the coord system of 4084 // newly focused view 4085 focused.getFocusedRect(mTempRect); 4086 if (mView instanceof ViewGroup) { 4087 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 4088 focused, mTempRect); 4089 ((ViewGroup) mView).offsetRectIntoDescendantCoords( 4090 v, mTempRect); 4091 } 4092 if (v.requestFocus(direction, mTempRect)) { 4093 playSoundEffect(SoundEffectConstants 4094 .getContantForFocusDirection(direction)); 4095 return FINISH_HANDLED; 4096 } 4097 } 4098 4099 // Give the focused view a last chance to handle the dpad key. 4100 if (mView.dispatchUnhandledMove(focused, direction)) { 4101 return FINISH_HANDLED; 4102 } 4103 } else { 4104 // find the best view to give focus to in this non-touch-mode with no-focus 4105 View v = focusSearch(null, direction); 4106 if (v != null && v.requestFocus(direction)) { 4107 return FINISH_HANDLED; 4108 } 4109 } 4110 } 4111 } 4112 return FORWARD; 4113 } 4114 4115 private int processPointerEvent(QueuedInputEvent q) { 4116 final MotionEvent event = (MotionEvent)q.mEvent; 4117 4118 mAttachInfo.mUnbufferedDispatchRequested = false; 4119 boolean handled = mView.dispatchPointerEvent(event); 4120 if (mAttachInfo.mUnbufferedDispatchRequested && !mUnbufferedInputDispatch) { 4121 mUnbufferedInputDispatch = true; 4122 if (mConsumeBatchedInputScheduled) { 4123 scheduleConsumeBatchedInputImmediately(); 4124 } 4125 } 4126 return handled ? FINISH_HANDLED : FORWARD; 4127 } 4128 4129 private int processTrackballEvent(QueuedInputEvent q) { 4130 final MotionEvent event = (MotionEvent)q.mEvent; 4131 4132 if (mView.dispatchTrackballEvent(event)) { 4133 return FINISH_HANDLED; 4134 } 4135 return FORWARD; 4136 } 4137 4138 private int processGenericMotionEvent(QueuedInputEvent q) { 4139 final MotionEvent event = (MotionEvent)q.mEvent; 4140 4141 // Deliver the event to the view. 4142 if (mView.dispatchGenericMotionEvent(event)) { 4143 return FINISH_HANDLED; 4144 } 4145 return FORWARD; 4146 } 4147 } 4148 4149 /** 4150 * Performs synthesis of new input events from unhandled input events. 4151 */ 4152 final class SyntheticInputStage extends InputStage { 4153 private final SyntheticTrackballHandler mTrackball = new SyntheticTrackballHandler(); 4154 private final SyntheticJoystickHandler mJoystick = new SyntheticJoystickHandler(); 4155 private final SyntheticTouchNavigationHandler mTouchNavigation = 4156 new SyntheticTouchNavigationHandler(); 4157 private final SyntheticKeyboardHandler mKeyboard = new SyntheticKeyboardHandler(); 4158 4159 public SyntheticInputStage() { 4160 super(null); 4161 } 4162 4163 @Override 4164 protected int onProcess(QueuedInputEvent q) { 4165 q.mFlags |= QueuedInputEvent.FLAG_RESYNTHESIZED; 4166 if (q.mEvent instanceof MotionEvent) { 4167 final MotionEvent event = (MotionEvent)q.mEvent; 4168 final int source = event.getSource(); 4169 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 4170 mTrackball.process(event); 4171 return FINISH_HANDLED; 4172 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 4173 mJoystick.process(event); 4174 return FINISH_HANDLED; 4175 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 4176 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 4177 mTouchNavigation.process(event); 4178 return FINISH_HANDLED; 4179 } 4180 } else if ((q.mFlags & QueuedInputEvent.FLAG_UNHANDLED) != 0) { 4181 mKeyboard.process((KeyEvent)q.mEvent); 4182 return FINISH_HANDLED; 4183 } 4184 4185 return FORWARD; 4186 } 4187 4188 @Override 4189 protected void onDeliverToNext(QueuedInputEvent q) { 4190 if ((q.mFlags & QueuedInputEvent.FLAG_RESYNTHESIZED) == 0) { 4191 // Cancel related synthetic events if any prior stage has handled the event. 4192 if (q.mEvent instanceof MotionEvent) { 4193 final MotionEvent event = (MotionEvent)q.mEvent; 4194 final int source = event.getSource(); 4195 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 4196 mTrackball.cancel(event); 4197 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 4198 mJoystick.cancel(event); 4199 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 4200 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 4201 mTouchNavigation.cancel(event); 4202 } 4203 } 4204 } 4205 super.onDeliverToNext(q); 4206 } 4207 } 4208 4209 /** 4210 * Creates dpad events from unhandled trackball movements. 4211 */ 4212 final class SyntheticTrackballHandler { 4213 private final TrackballAxis mX = new TrackballAxis(); 4214 private final TrackballAxis mY = new TrackballAxis(); 4215 private long mLastTime; 4216 4217 public void process(MotionEvent event) { 4218 // Translate the trackball event into DPAD keys and try to deliver those. 4219 long curTime = SystemClock.uptimeMillis(); 4220 if ((mLastTime + MAX_TRACKBALL_DELAY) < curTime) { 4221 // It has been too long since the last movement, 4222 // so restart at the beginning. 4223 mX.reset(0); 4224 mY.reset(0); 4225 mLastTime = curTime; 4226 } 4227 4228 final int action = event.getAction(); 4229 final int metaState = event.getMetaState(); 4230 switch (action) { 4231 case MotionEvent.ACTION_DOWN: 4232 mX.reset(2); 4233 mY.reset(2); 4234 enqueueInputEvent(new KeyEvent(curTime, curTime, 4235 KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 4236 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4237 InputDevice.SOURCE_KEYBOARD)); 4238 break; 4239 case MotionEvent.ACTION_UP: 4240 mX.reset(2); 4241 mY.reset(2); 4242 enqueueInputEvent(new KeyEvent(curTime, curTime, 4243 KeyEvent.ACTION_UP, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 4244 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4245 InputDevice.SOURCE_KEYBOARD)); 4246 break; 4247 } 4248 4249 if (DEBUG_TRACKBALL) Log.v(TAG, "TB X=" + mX.position + " step=" 4250 + mX.step + " dir=" + mX.dir + " acc=" + mX.acceleration 4251 + " move=" + event.getX() 4252 + " / Y=" + mY.position + " step=" 4253 + mY.step + " dir=" + mY.dir + " acc=" + mY.acceleration 4254 + " move=" + event.getY()); 4255 final float xOff = mX.collect(event.getX(), event.getEventTime(), "X"); 4256 final float yOff = mY.collect(event.getY(), event.getEventTime(), "Y"); 4257 4258 // Generate DPAD events based on the trackball movement. 4259 // We pick the axis that has moved the most as the direction of 4260 // the DPAD. When we generate DPAD events for one axis, then the 4261 // other axis is reset -- we don't want to perform DPAD jumps due 4262 // to slight movements in the trackball when making major movements 4263 // along the other axis. 4264 int keycode = 0; 4265 int movement = 0; 4266 float accel = 1; 4267 if (xOff > yOff) { 4268 movement = mX.generate(); 4269 if (movement != 0) { 4270 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_RIGHT 4271 : KeyEvent.KEYCODE_DPAD_LEFT; 4272 accel = mX.acceleration; 4273 mY.reset(2); 4274 } 4275 } else if (yOff > 0) { 4276 movement = mY.generate(); 4277 if (movement != 0) { 4278 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_DOWN 4279 : KeyEvent.KEYCODE_DPAD_UP; 4280 accel = mY.acceleration; 4281 mX.reset(2); 4282 } 4283 } 4284 4285 if (keycode != 0) { 4286 if (movement < 0) movement = -movement; 4287 int accelMovement = (int)(movement * accel); 4288 if (DEBUG_TRACKBALL) Log.v(TAG, "Move: movement=" + movement 4289 + " accelMovement=" + accelMovement 4290 + " accel=" + accel); 4291 if (accelMovement > movement) { 4292 if (DEBUG_TRACKBALL) Log.v(TAG, "Delivering fake DPAD: " 4293 + keycode); 4294 movement--; 4295 int repeatCount = accelMovement - movement; 4296 enqueueInputEvent(new KeyEvent(curTime, curTime, 4297 KeyEvent.ACTION_MULTIPLE, keycode, repeatCount, metaState, 4298 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4299 InputDevice.SOURCE_KEYBOARD)); 4300 } 4301 while (movement > 0) { 4302 if (DEBUG_TRACKBALL) Log.v(TAG, "Delivering fake DPAD: " 4303 + keycode); 4304 movement--; 4305 curTime = SystemClock.uptimeMillis(); 4306 enqueueInputEvent(new KeyEvent(curTime, curTime, 4307 KeyEvent.ACTION_DOWN, keycode, 0, metaState, 4308 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4309 InputDevice.SOURCE_KEYBOARD)); 4310 enqueueInputEvent(new KeyEvent(curTime, curTime, 4311 KeyEvent.ACTION_UP, keycode, 0, metaState, 4312 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4313 InputDevice.SOURCE_KEYBOARD)); 4314 } 4315 mLastTime = curTime; 4316 } 4317 } 4318 4319 public void cancel(MotionEvent event) { 4320 mLastTime = Integer.MIN_VALUE; 4321 4322 // If we reach this, we consumed a trackball event. 4323 // Because we will not translate the trackball event into a key event, 4324 // touch mode will not exit, so we exit touch mode here. 4325 if (mView != null && mAdded) { 4326 ensureTouchMode(false); 4327 } 4328 } 4329 } 4330 4331 /** 4332 * Maintains state information for a single trackball axis, generating 4333 * discrete (DPAD) movements based on raw trackball motion. 4334 */ 4335 static final class TrackballAxis { 4336 /** 4337 * The maximum amount of acceleration we will apply. 4338 */ 4339 static final float MAX_ACCELERATION = 20; 4340 4341 /** 4342 * The maximum amount of time (in milliseconds) between events in order 4343 * for us to consider the user to be doing fast trackball movements, 4344 * and thus apply an acceleration. 4345 */ 4346 static final long FAST_MOVE_TIME = 150; 4347 4348 /** 4349 * Scaling factor to the time (in milliseconds) between events to how 4350 * much to multiple/divide the current acceleration. When movement 4351 * is < FAST_MOVE_TIME this multiplies the acceleration; when > 4352 * FAST_MOVE_TIME it divides it. 4353 */ 4354 static final float ACCEL_MOVE_SCALING_FACTOR = (1.0f/40); 4355 4356 static final float FIRST_MOVEMENT_THRESHOLD = 0.5f; 4357 static final float SECOND_CUMULATIVE_MOVEMENT_THRESHOLD = 2.0f; 4358 static final float SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD = 1.0f; 4359 4360 float position; 4361 float acceleration = 1; 4362 long lastMoveTime = 0; 4363 int step; 4364 int dir; 4365 int nonAccelMovement; 4366 4367 void reset(int _step) { 4368 position = 0; 4369 acceleration = 1; 4370 lastMoveTime = 0; 4371 step = _step; 4372 dir = 0; 4373 } 4374 4375 /** 4376 * Add trackball movement into the state. If the direction of movement 4377 * has been reversed, the state is reset before adding the 4378 * movement (so that you don't have to compensate for any previously 4379 * collected movement before see the result of the movement in the 4380 * new direction). 4381 * 4382 * @return Returns the absolute value of the amount of movement 4383 * collected so far. 4384 */ 4385 float collect(float off, long time, String axis) { 4386 long normTime; 4387 if (off > 0) { 4388 normTime = (long)(off * FAST_MOVE_TIME); 4389 if (dir < 0) { 4390 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to positive!"); 4391 position = 0; 4392 step = 0; 4393 acceleration = 1; 4394 lastMoveTime = 0; 4395 } 4396 dir = 1; 4397 } else if (off < 0) { 4398 normTime = (long)((-off) * FAST_MOVE_TIME); 4399 if (dir > 0) { 4400 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to negative!"); 4401 position = 0; 4402 step = 0; 4403 acceleration = 1; 4404 lastMoveTime = 0; 4405 } 4406 dir = -1; 4407 } else { 4408 normTime = 0; 4409 } 4410 4411 // The number of milliseconds between each movement that is 4412 // considered "normal" and will not result in any acceleration 4413 // or deceleration, scaled by the offset we have here. 4414 if (normTime > 0) { 4415 long delta = time - lastMoveTime; 4416 lastMoveTime = time; 4417 float acc = acceleration; 4418 if (delta < normTime) { 4419 // The user is scrolling rapidly, so increase acceleration. 4420 float scale = (normTime-delta) * ACCEL_MOVE_SCALING_FACTOR; 4421 if (scale > 1) acc *= scale; 4422 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " accelerate: off=" 4423 + off + " normTime=" + normTime + " delta=" + delta 4424 + " scale=" + scale + " acc=" + acc); 4425 acceleration = acc < MAX_ACCELERATION ? acc : MAX_ACCELERATION; 4426 } else { 4427 // The user is scrolling slowly, so decrease acceleration. 4428 float scale = (delta-normTime) * ACCEL_MOVE_SCALING_FACTOR; 4429 if (scale > 1) acc /= scale; 4430 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " deccelerate: off=" 4431 + off + " normTime=" + normTime + " delta=" + delta 4432 + " scale=" + scale + " acc=" + acc); 4433 acceleration = acc > 1 ? acc : 1; 4434 } 4435 } 4436 position += off; 4437 return Math.abs(position); 4438 } 4439 4440 /** 4441 * Generate the number of discrete movement events appropriate for 4442 * the currently collected trackball movement. 4443 * 4444 * @return Returns the number of discrete movements, either positive 4445 * or negative, or 0 if there is not enough trackball movement yet 4446 * for a discrete movement. 4447 */ 4448 int generate() { 4449 int movement = 0; 4450 nonAccelMovement = 0; 4451 do { 4452 final int dir = position >= 0 ? 1 : -1; 4453 switch (step) { 4454 // If we are going to execute the first step, then we want 4455 // to do this as soon as possible instead of waiting for 4456 // a full movement, in order to make things look responsive. 4457 case 0: 4458 if (Math.abs(position) < FIRST_MOVEMENT_THRESHOLD) { 4459 return movement; 4460 } 4461 movement += dir; 4462 nonAccelMovement += dir; 4463 step = 1; 4464 break; 4465 // If we have generated the first movement, then we need 4466 // to wait for the second complete trackball motion before 4467 // generating the second discrete movement. 4468 case 1: 4469 if (Math.abs(position) < SECOND_CUMULATIVE_MOVEMENT_THRESHOLD) { 4470 return movement; 4471 } 4472 movement += dir; 4473 nonAccelMovement += dir; 4474 position -= SECOND_CUMULATIVE_MOVEMENT_THRESHOLD * dir; 4475 step = 2; 4476 break; 4477 // After the first two, we generate discrete movements 4478 // consistently with the trackball, applying an acceleration 4479 // if the trackball is moving quickly. This is a simple 4480 // acceleration on top of what we already compute based 4481 // on how quickly the wheel is being turned, to apply 4482 // a longer increasing acceleration to continuous movement 4483 // in one direction. 4484 default: 4485 if (Math.abs(position) < SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD) { 4486 return movement; 4487 } 4488 movement += dir; 4489 position -= dir * SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD; 4490 float acc = acceleration; 4491 acc *= 1.1f; 4492 acceleration = acc < MAX_ACCELERATION ? acc : acceleration; 4493 break; 4494 } 4495 } while (true); 4496 } 4497 } 4498 4499 /** 4500 * Creates dpad events from unhandled joystick movements. 4501 */ 4502 final class SyntheticJoystickHandler extends Handler { 4503 private final static String TAG = "SyntheticJoystickHandler"; 4504 private final static int MSG_ENQUEUE_X_AXIS_KEY_REPEAT = 1; 4505 private final static int MSG_ENQUEUE_Y_AXIS_KEY_REPEAT = 2; 4506 4507 private int mLastXDirection; 4508 private int mLastYDirection; 4509 private int mLastXKeyCode; 4510 private int mLastYKeyCode; 4511 4512 public SyntheticJoystickHandler() { 4513 super(true); 4514 } 4515 4516 @Override 4517 public void handleMessage(Message msg) { 4518 switch (msg.what) { 4519 case MSG_ENQUEUE_X_AXIS_KEY_REPEAT: 4520 case MSG_ENQUEUE_Y_AXIS_KEY_REPEAT: { 4521 KeyEvent oldEvent = (KeyEvent)msg.obj; 4522 KeyEvent e = KeyEvent.changeTimeRepeat(oldEvent, 4523 SystemClock.uptimeMillis(), 4524 oldEvent.getRepeatCount() + 1); 4525 if (mAttachInfo.mHasWindowFocus) { 4526 enqueueInputEvent(e); 4527 Message m = obtainMessage(msg.what, e); 4528 m.setAsynchronous(true); 4529 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatDelay()); 4530 } 4531 } break; 4532 } 4533 } 4534 4535 public void process(MotionEvent event) { 4536 switch(event.getActionMasked()) { 4537 case MotionEvent.ACTION_CANCEL: 4538 cancel(event); 4539 break; 4540 case MotionEvent.ACTION_MOVE: 4541 update(event, true); 4542 break; 4543 default: 4544 Log.w(TAG, "Unexpected action: " + event.getActionMasked()); 4545 } 4546 } 4547 4548 private void cancel(MotionEvent event) { 4549 removeMessages(MSG_ENQUEUE_X_AXIS_KEY_REPEAT); 4550 removeMessages(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT); 4551 update(event, false); 4552 } 4553 4554 private void update(MotionEvent event, boolean synthesizeNewKeys) { 4555 final long time = event.getEventTime(); 4556 final int metaState = event.getMetaState(); 4557 final int deviceId = event.getDeviceId(); 4558 final int source = event.getSource(); 4559 4560 int xDirection = joystickAxisValueToDirection( 4561 event.getAxisValue(MotionEvent.AXIS_HAT_X)); 4562 if (xDirection == 0) { 4563 xDirection = joystickAxisValueToDirection(event.getX()); 4564 } 4565 4566 int yDirection = joystickAxisValueToDirection( 4567 event.getAxisValue(MotionEvent.AXIS_HAT_Y)); 4568 if (yDirection == 0) { 4569 yDirection = joystickAxisValueToDirection(event.getY()); 4570 } 4571 4572 if (xDirection != mLastXDirection) { 4573 if (mLastXKeyCode != 0) { 4574 removeMessages(MSG_ENQUEUE_X_AXIS_KEY_REPEAT); 4575 enqueueInputEvent(new KeyEvent(time, time, 4576 KeyEvent.ACTION_UP, mLastXKeyCode, 0, metaState, 4577 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4578 mLastXKeyCode = 0; 4579 } 4580 4581 mLastXDirection = xDirection; 4582 4583 if (xDirection != 0 && synthesizeNewKeys) { 4584 mLastXKeyCode = xDirection > 0 4585 ? KeyEvent.KEYCODE_DPAD_RIGHT : KeyEvent.KEYCODE_DPAD_LEFT; 4586 final KeyEvent e = new KeyEvent(time, time, 4587 KeyEvent.ACTION_DOWN, mLastXKeyCode, 0, metaState, 4588 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4589 enqueueInputEvent(e); 4590 Message m = obtainMessage(MSG_ENQUEUE_X_AXIS_KEY_REPEAT, e); 4591 m.setAsynchronous(true); 4592 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4593 } 4594 } 4595 4596 if (yDirection != mLastYDirection) { 4597 if (mLastYKeyCode != 0) { 4598 removeMessages(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT); 4599 enqueueInputEvent(new KeyEvent(time, time, 4600 KeyEvent.ACTION_UP, mLastYKeyCode, 0, metaState, 4601 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4602 mLastYKeyCode = 0; 4603 } 4604 4605 mLastYDirection = yDirection; 4606 4607 if (yDirection != 0 && synthesizeNewKeys) { 4608 mLastYKeyCode = yDirection > 0 4609 ? KeyEvent.KEYCODE_DPAD_DOWN : KeyEvent.KEYCODE_DPAD_UP; 4610 final KeyEvent e = new KeyEvent(time, time, 4611 KeyEvent.ACTION_DOWN, mLastYKeyCode, 0, metaState, 4612 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4613 enqueueInputEvent(e); 4614 Message m = obtainMessage(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT, e); 4615 m.setAsynchronous(true); 4616 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4617 } 4618 } 4619 } 4620 4621 private int joystickAxisValueToDirection(float value) { 4622 if (value >= 0.5f) { 4623 return 1; 4624 } else if (value <= -0.5f) { 4625 return -1; 4626 } else { 4627 return 0; 4628 } 4629 } 4630 } 4631 4632 /** 4633 * Creates dpad events from unhandled touch navigation movements. 4634 */ 4635 final class SyntheticTouchNavigationHandler extends Handler { 4636 private static final String LOCAL_TAG = "SyntheticTouchNavigationHandler"; 4637 private static final boolean LOCAL_DEBUG = false; 4638 4639 // Assumed nominal width and height in millimeters of a touch navigation pad, 4640 // if no resolution information is available from the input system. 4641 private static final float DEFAULT_WIDTH_MILLIMETERS = 48; 4642 private static final float DEFAULT_HEIGHT_MILLIMETERS = 48; 4643 4644 /* TODO: These constants should eventually be moved to ViewConfiguration. */ 4645 4646 // The nominal distance traveled to move by one unit. 4647 private static final int TICK_DISTANCE_MILLIMETERS = 12; 4648 4649 // Minimum and maximum fling velocity in ticks per second. 4650 // The minimum velocity should be set such that we perform enough ticks per 4651 // second that the fling appears to be fluid. For example, if we set the minimum 4652 // to 2 ticks per second, then there may be up to half a second delay between the next 4653 // to last and last ticks which is noticeably discrete and jerky. This value should 4654 // probably not be set to anything less than about 4. 4655 // If fling accuracy is a problem then consider tuning the tick distance instead. 4656 private static final float MIN_FLING_VELOCITY_TICKS_PER_SECOND = 6f; 4657 private static final float MAX_FLING_VELOCITY_TICKS_PER_SECOND = 20f; 4658 4659 // Fling velocity decay factor applied after each new key is emitted. 4660 // This parameter controls the deceleration and overall duration of the fling. 4661 // The fling stops automatically when its velocity drops below the minimum 4662 // fling velocity defined above. 4663 private static final float FLING_TICK_DECAY = 0.8f; 4664 4665 /* The input device that we are tracking. */ 4666 4667 private int mCurrentDeviceId = -1; 4668 private int mCurrentSource; 4669 private boolean mCurrentDeviceSupported; 4670 4671 /* Configuration for the current input device. */ 4672 4673 // The scaled tick distance. A movement of this amount should generally translate 4674 // into a single dpad event in a given direction. 4675 private float mConfigTickDistance; 4676 4677 // The minimum and maximum scaled fling velocity. 4678 private float mConfigMinFlingVelocity; 4679 private float mConfigMaxFlingVelocity; 4680 4681 /* Tracking state. */ 4682 4683 // The velocity tracker for detecting flings. 4684 private VelocityTracker mVelocityTracker; 4685 4686 // The active pointer id, or -1 if none. 4687 private int mActivePointerId = -1; 4688 4689 // Location where tracking started. 4690 private float mStartX; 4691 private float mStartY; 4692 4693 // Most recently observed position. 4694 private float mLastX; 4695 private float mLastY; 4696 4697 // Accumulated movement delta since the last direction key was sent. 4698 private float mAccumulatedX; 4699 private float mAccumulatedY; 4700 4701 // Set to true if any movement was delivered to the app. 4702 // Implies that tap slop was exceeded. 4703 private boolean mConsumedMovement; 4704 4705 // The most recently sent key down event. 4706 // The keycode remains set until the direction changes or a fling ends 4707 // so that repeated key events may be generated as required. 4708 private long mPendingKeyDownTime; 4709 private int mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 4710 private int mPendingKeyRepeatCount; 4711 private int mPendingKeyMetaState; 4712 4713 // The current fling velocity while a fling is in progress. 4714 private boolean mFlinging; 4715 private float mFlingVelocity; 4716 4717 public SyntheticTouchNavigationHandler() { 4718 super(true); 4719 } 4720 4721 public void process(MotionEvent event) { 4722 // Update the current device information. 4723 final long time = event.getEventTime(); 4724 final int deviceId = event.getDeviceId(); 4725 final int source = event.getSource(); 4726 if (mCurrentDeviceId != deviceId || mCurrentSource != source) { 4727 finishKeys(time); 4728 finishTracking(time); 4729 mCurrentDeviceId = deviceId; 4730 mCurrentSource = source; 4731 mCurrentDeviceSupported = false; 4732 InputDevice device = event.getDevice(); 4733 if (device != null) { 4734 // In order to support an input device, we must know certain 4735 // characteristics about it, such as its size and resolution. 4736 InputDevice.MotionRange xRange = device.getMotionRange(MotionEvent.AXIS_X); 4737 InputDevice.MotionRange yRange = device.getMotionRange(MotionEvent.AXIS_Y); 4738 if (xRange != null && yRange != null) { 4739 mCurrentDeviceSupported = true; 4740 4741 // Infer the resolution if it not actually known. 4742 float xRes = xRange.getResolution(); 4743 if (xRes <= 0) { 4744 xRes = xRange.getRange() / DEFAULT_WIDTH_MILLIMETERS; 4745 } 4746 float yRes = yRange.getResolution(); 4747 if (yRes <= 0) { 4748 yRes = yRange.getRange() / DEFAULT_HEIGHT_MILLIMETERS; 4749 } 4750 float nominalRes = (xRes + yRes) * 0.5f; 4751 4752 // Precompute all of the configuration thresholds we will need. 4753 mConfigTickDistance = TICK_DISTANCE_MILLIMETERS * nominalRes; 4754 mConfigMinFlingVelocity = 4755 MIN_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 4756 mConfigMaxFlingVelocity = 4757 MAX_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 4758 4759 if (LOCAL_DEBUG) { 4760 Log.d(LOCAL_TAG, "Configured device " + mCurrentDeviceId 4761 + " (" + Integer.toHexString(mCurrentSource) + "): " 4762 + ", mConfigTickDistance=" + mConfigTickDistance 4763 + ", mConfigMinFlingVelocity=" + mConfigMinFlingVelocity 4764 + ", mConfigMaxFlingVelocity=" + mConfigMaxFlingVelocity); 4765 } 4766 } 4767 } 4768 } 4769 if (!mCurrentDeviceSupported) { 4770 return; 4771 } 4772 4773 // Handle the event. 4774 final int action = event.getActionMasked(); 4775 switch (action) { 4776 case MotionEvent.ACTION_DOWN: { 4777 boolean caughtFling = mFlinging; 4778 finishKeys(time); 4779 finishTracking(time); 4780 mActivePointerId = event.getPointerId(0); 4781 mVelocityTracker = VelocityTracker.obtain(); 4782 mVelocityTracker.addMovement(event); 4783 mStartX = event.getX(); 4784 mStartY = event.getY(); 4785 mLastX = mStartX; 4786 mLastY = mStartY; 4787 mAccumulatedX = 0; 4788 mAccumulatedY = 0; 4789 4790 // If we caught a fling, then pretend that the tap slop has already 4791 // been exceeded to suppress taps whose only purpose is to stop the fling. 4792 mConsumedMovement = caughtFling; 4793 break; 4794 } 4795 4796 case MotionEvent.ACTION_MOVE: 4797 case MotionEvent.ACTION_UP: { 4798 if (mActivePointerId < 0) { 4799 break; 4800 } 4801 final int index = event.findPointerIndex(mActivePointerId); 4802 if (index < 0) { 4803 finishKeys(time); 4804 finishTracking(time); 4805 break; 4806 } 4807 4808 mVelocityTracker.addMovement(event); 4809 final float x = event.getX(index); 4810 final float y = event.getY(index); 4811 mAccumulatedX += x - mLastX; 4812 mAccumulatedY += y - mLastY; 4813 mLastX = x; 4814 mLastY = y; 4815 4816 // Consume any accumulated movement so far. 4817 final int metaState = event.getMetaState(); 4818 consumeAccumulatedMovement(time, metaState); 4819 4820 // Detect taps and flings. 4821 if (action == MotionEvent.ACTION_UP) { 4822 if (mConsumedMovement && mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 4823 // It might be a fling. 4824 mVelocityTracker.computeCurrentVelocity(1000, mConfigMaxFlingVelocity); 4825 final float vx = mVelocityTracker.getXVelocity(mActivePointerId); 4826 final float vy = mVelocityTracker.getYVelocity(mActivePointerId); 4827 if (!startFling(time, vx, vy)) { 4828 finishKeys(time); 4829 } 4830 } 4831 finishTracking(time); 4832 } 4833 break; 4834 } 4835 4836 case MotionEvent.ACTION_CANCEL: { 4837 finishKeys(time); 4838 finishTracking(time); 4839 break; 4840 } 4841 } 4842 } 4843 4844 public void cancel(MotionEvent event) { 4845 if (mCurrentDeviceId == event.getDeviceId() 4846 && mCurrentSource == event.getSource()) { 4847 final long time = event.getEventTime(); 4848 finishKeys(time); 4849 finishTracking(time); 4850 } 4851 } 4852 4853 private void finishKeys(long time) { 4854 cancelFling(); 4855 sendKeyUp(time); 4856 } 4857 4858 private void finishTracking(long time) { 4859 if (mActivePointerId >= 0) { 4860 mActivePointerId = -1; 4861 mVelocityTracker.recycle(); 4862 mVelocityTracker = null; 4863 } 4864 } 4865 4866 private void consumeAccumulatedMovement(long time, int metaState) { 4867 final float absX = Math.abs(mAccumulatedX); 4868 final float absY = Math.abs(mAccumulatedY); 4869 if (absX >= absY) { 4870 if (absX >= mConfigTickDistance) { 4871 mAccumulatedX = consumeAccumulatedMovement(time, metaState, mAccumulatedX, 4872 KeyEvent.KEYCODE_DPAD_LEFT, KeyEvent.KEYCODE_DPAD_RIGHT); 4873 mAccumulatedY = 0; 4874 mConsumedMovement = true; 4875 } 4876 } else { 4877 if (absY >= mConfigTickDistance) { 4878 mAccumulatedY = consumeAccumulatedMovement(time, metaState, mAccumulatedY, 4879 KeyEvent.KEYCODE_DPAD_UP, KeyEvent.KEYCODE_DPAD_DOWN); 4880 mAccumulatedX = 0; 4881 mConsumedMovement = true; 4882 } 4883 } 4884 } 4885 4886 private float consumeAccumulatedMovement(long time, int metaState, 4887 float accumulator, int negativeKeyCode, int positiveKeyCode) { 4888 while (accumulator <= -mConfigTickDistance) { 4889 sendKeyDownOrRepeat(time, negativeKeyCode, metaState); 4890 accumulator += mConfigTickDistance; 4891 } 4892 while (accumulator >= mConfigTickDistance) { 4893 sendKeyDownOrRepeat(time, positiveKeyCode, metaState); 4894 accumulator -= mConfigTickDistance; 4895 } 4896 return accumulator; 4897 } 4898 4899 private void sendKeyDownOrRepeat(long time, int keyCode, int metaState) { 4900 if (mPendingKeyCode != keyCode) { 4901 sendKeyUp(time); 4902 mPendingKeyDownTime = time; 4903 mPendingKeyCode = keyCode; 4904 mPendingKeyRepeatCount = 0; 4905 } else { 4906 mPendingKeyRepeatCount += 1; 4907 } 4908 mPendingKeyMetaState = metaState; 4909 4910 // Note: Normally we would pass FLAG_LONG_PRESS when the repeat count is 1 4911 // but it doesn't quite make sense when simulating the events in this way. 4912 if (LOCAL_DEBUG) { 4913 Log.d(LOCAL_TAG, "Sending key down: keyCode=" + mPendingKeyCode 4914 + ", repeatCount=" + mPendingKeyRepeatCount 4915 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 4916 } 4917 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 4918 KeyEvent.ACTION_DOWN, mPendingKeyCode, mPendingKeyRepeatCount, 4919 mPendingKeyMetaState, mCurrentDeviceId, 4920 KeyEvent.FLAG_FALLBACK, mCurrentSource)); 4921 } 4922 4923 private void sendKeyUp(long time) { 4924 if (mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 4925 if (LOCAL_DEBUG) { 4926 Log.d(LOCAL_TAG, "Sending key up: keyCode=" + mPendingKeyCode 4927 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 4928 } 4929 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 4930 KeyEvent.ACTION_UP, mPendingKeyCode, 0, mPendingKeyMetaState, 4931 mCurrentDeviceId, 0, KeyEvent.FLAG_FALLBACK, 4932 mCurrentSource)); 4933 mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 4934 } 4935 } 4936 4937 private boolean startFling(long time, float vx, float vy) { 4938 if (LOCAL_DEBUG) { 4939 Log.d(LOCAL_TAG, "Considering fling: vx=" + vx + ", vy=" + vy 4940 + ", min=" + mConfigMinFlingVelocity); 4941 } 4942 4943 // Flings must be oriented in the same direction as the preceding movements. 4944 switch (mPendingKeyCode) { 4945 case KeyEvent.KEYCODE_DPAD_LEFT: 4946 if (-vx >= mConfigMinFlingVelocity 4947 && Math.abs(vy) < mConfigMinFlingVelocity) { 4948 mFlingVelocity = -vx; 4949 break; 4950 } 4951 return false; 4952 4953 case KeyEvent.KEYCODE_DPAD_RIGHT: 4954 if (vx >= mConfigMinFlingVelocity 4955 && Math.abs(vy) < mConfigMinFlingVelocity) { 4956 mFlingVelocity = vx; 4957 break; 4958 } 4959 return false; 4960 4961 case KeyEvent.KEYCODE_DPAD_UP: 4962 if (-vy >= mConfigMinFlingVelocity 4963 && Math.abs(vx) < mConfigMinFlingVelocity) { 4964 mFlingVelocity = -vy; 4965 break; 4966 } 4967 return false; 4968 4969 case KeyEvent.KEYCODE_DPAD_DOWN: 4970 if (vy >= mConfigMinFlingVelocity 4971 && Math.abs(vx) < mConfigMinFlingVelocity) { 4972 mFlingVelocity = vy; 4973 break; 4974 } 4975 return false; 4976 } 4977 4978 // Post the first fling event. 4979 mFlinging = postFling(time); 4980 return mFlinging; 4981 } 4982 4983 private boolean postFling(long time) { 4984 // The idea here is to estimate the time when the pointer would have 4985 // traveled one tick distance unit given the current fling velocity. 4986 // This effect creates continuity of motion. 4987 if (mFlingVelocity >= mConfigMinFlingVelocity) { 4988 long delay = (long)(mConfigTickDistance / mFlingVelocity * 1000); 4989 postAtTime(mFlingRunnable, time + delay); 4990 if (LOCAL_DEBUG) { 4991 Log.d(LOCAL_TAG, "Posted fling: velocity=" 4992 + mFlingVelocity + ", delay=" + delay 4993 + ", keyCode=" + mPendingKeyCode); 4994 } 4995 return true; 4996 } 4997 return false; 4998 } 4999 5000 private void cancelFling() { 5001 if (mFlinging) { 5002 removeCallbacks(mFlingRunnable); 5003 mFlinging = false; 5004 } 5005 } 5006 5007 private final Runnable mFlingRunnable = new Runnable() { 5008 @Override 5009 public void run() { 5010 final long time = SystemClock.uptimeMillis(); 5011 sendKeyDownOrRepeat(time, mPendingKeyCode, mPendingKeyMetaState); 5012 mFlingVelocity *= FLING_TICK_DECAY; 5013 if (!postFling(time)) { 5014 mFlinging = false; 5015 finishKeys(time); 5016 } 5017 } 5018 }; 5019 } 5020 5021 final class SyntheticKeyboardHandler { 5022 public void process(KeyEvent event) { 5023 if ((event.getFlags() & KeyEvent.FLAG_FALLBACK) != 0) { 5024 return; 5025 } 5026 5027 final KeyCharacterMap kcm = event.getKeyCharacterMap(); 5028 final int keyCode = event.getKeyCode(); 5029 final int metaState = event.getMetaState(); 5030 5031 // Check for fallback actions specified by the key character map. 5032 KeyCharacterMap.FallbackAction fallbackAction = 5033 kcm.getFallbackAction(keyCode, metaState); 5034 if (fallbackAction != null) { 5035 final int flags = event.getFlags() | KeyEvent.FLAG_FALLBACK; 5036 KeyEvent fallbackEvent = KeyEvent.obtain( 5037 event.getDownTime(), event.getEventTime(), 5038 event.getAction(), fallbackAction.keyCode, 5039 event.getRepeatCount(), fallbackAction.metaState, 5040 event.getDeviceId(), event.getScanCode(), 5041 flags, event.getSource(), null); 5042 fallbackAction.recycle(); 5043 enqueueInputEvent(fallbackEvent); 5044 } 5045 } 5046 } 5047 5048 /** 5049 * Returns true if the key is used for keyboard navigation. 5050 * @param keyEvent The key event. 5051 * @return True if the key is used for keyboard navigation. 5052 */ 5053 private static boolean isNavigationKey(KeyEvent keyEvent) { 5054 switch (keyEvent.getKeyCode()) { 5055 case KeyEvent.KEYCODE_DPAD_LEFT: 5056 case KeyEvent.KEYCODE_DPAD_RIGHT: 5057 case KeyEvent.KEYCODE_DPAD_UP: 5058 case KeyEvent.KEYCODE_DPAD_DOWN: 5059 case KeyEvent.KEYCODE_DPAD_CENTER: 5060 case KeyEvent.KEYCODE_PAGE_UP: 5061 case KeyEvent.KEYCODE_PAGE_DOWN: 5062 case KeyEvent.KEYCODE_MOVE_HOME: 5063 case KeyEvent.KEYCODE_MOVE_END: 5064 case KeyEvent.KEYCODE_TAB: 5065 case KeyEvent.KEYCODE_SPACE: 5066 case KeyEvent.KEYCODE_ENTER: 5067 return true; 5068 } 5069 return false; 5070 } 5071 5072 /** 5073 * Returns true if the key is used for typing. 5074 * @param keyEvent The key event. 5075 * @return True if the key is used for typing. 5076 */ 5077 private static boolean isTypingKey(KeyEvent keyEvent) { 5078 return keyEvent.getUnicodeChar() > 0; 5079 } 5080 5081 /** 5082 * See if the key event means we should leave touch mode (and leave touch mode if so). 5083 * @param event The key event. 5084 * @return Whether this key event should be consumed (meaning the act of 5085 * leaving touch mode alone is considered the event). 5086 */ 5087 private boolean checkForLeavingTouchModeAndConsume(KeyEvent event) { 5088 // Only relevant in touch mode. 5089 if (!mAttachInfo.mInTouchMode) { 5090 return false; 5091 } 5092 5093 // Only consider leaving touch mode on DOWN or MULTIPLE actions, never on UP. 5094 final int action = event.getAction(); 5095 if (action != KeyEvent.ACTION_DOWN && action != KeyEvent.ACTION_MULTIPLE) { 5096 return false; 5097 } 5098 5099 // Don't leave touch mode if the IME told us not to. 5100 if ((event.getFlags() & KeyEvent.FLAG_KEEP_TOUCH_MODE) != 0) { 5101 return false; 5102 } 5103 5104 // If the key can be used for keyboard navigation then leave touch mode 5105 // and select a focused view if needed (in ensureTouchMode). 5106 // When a new focused view is selected, we consume the navigation key because 5107 // navigation doesn't make much sense unless a view already has focus so 5108 // the key's purpose is to set focus. 5109 if (isNavigationKey(event)) { 5110 return ensureTouchMode(false); 5111 } 5112 5113 // If the key can be used for typing then leave touch mode 5114 // and select a focused view if needed (in ensureTouchMode). 5115 // Always allow the view to process the typing key. 5116 if (isTypingKey(event)) { 5117 ensureTouchMode(false); 5118 return false; 5119 } 5120 5121 return false; 5122 } 5123 5124 /* drag/drop */ 5125 void setLocalDragState(Object obj) { 5126 mLocalDragState = obj; 5127 } 5128 5129 private void handleDragEvent(DragEvent event) { 5130 // From the root, only drag start/end/location are dispatched. entered/exited 5131 // are determined and dispatched by the viewgroup hierarchy, who then report 5132 // that back here for ultimate reporting back to the framework. 5133 if (mView != null && mAdded) { 5134 final int what = event.mAction; 5135 5136 if (what == DragEvent.ACTION_DRAG_EXITED) { 5137 // A direct EXITED event means that the window manager knows we've just crossed 5138 // a window boundary, so the current drag target within this one must have 5139 // just been exited. Send it the usual notifications and then we're done 5140 // for now. 5141 mView.dispatchDragEvent(event); 5142 } else { 5143 // Cache the drag description when the operation starts, then fill it in 5144 // on subsequent calls as a convenience 5145 if (what == DragEvent.ACTION_DRAG_STARTED) { 5146 mCurrentDragView = null; // Start the current-recipient tracking 5147 mDragDescription = event.mClipDescription; 5148 } else { 5149 event.mClipDescription = mDragDescription; 5150 } 5151 5152 // For events with a [screen] location, translate into window coordinates 5153 if ((what == DragEvent.ACTION_DRAG_LOCATION) || (what == DragEvent.ACTION_DROP)) { 5154 mDragPoint.set(event.mX, event.mY); 5155 if (mTranslator != null) { 5156 mTranslator.translatePointInScreenToAppWindow(mDragPoint); 5157 } 5158 5159 if (mCurScrollY != 0) { 5160 mDragPoint.offset(0, mCurScrollY); 5161 } 5162 5163 event.mX = mDragPoint.x; 5164 event.mY = mDragPoint.y; 5165 } 5166 5167 // Remember who the current drag target is pre-dispatch 5168 final View prevDragView = mCurrentDragView; 5169 5170 // Now dispatch the drag/drop event 5171 boolean result = mView.dispatchDragEvent(event); 5172 5173 // If we changed apparent drag target, tell the OS about it 5174 if (prevDragView != mCurrentDragView) { 5175 try { 5176 if (prevDragView != null) { 5177 mWindowSession.dragRecipientExited(mWindow); 5178 } 5179 if (mCurrentDragView != null) { 5180 mWindowSession.dragRecipientEntered(mWindow); 5181 } 5182 } catch (RemoteException e) { 5183 Slog.e(TAG, "Unable to note drag target change"); 5184 } 5185 } 5186 5187 // Report the drop result when we're done 5188 if (what == DragEvent.ACTION_DROP) { 5189 mDragDescription = null; 5190 try { 5191 Log.i(TAG, "Reporting drop result: " + result); 5192 mWindowSession.reportDropResult(mWindow, result); 5193 } catch (RemoteException e) { 5194 Log.e(TAG, "Unable to report drop result"); 5195 } 5196 } 5197 5198 // When the drag operation ends, release any local state object 5199 // that may have been in use 5200 if (what == DragEvent.ACTION_DRAG_ENDED) { 5201 setLocalDragState(null); 5202 } 5203 } 5204 } 5205 event.recycle(); 5206 } 5207 5208 public void handleDispatchSystemUiVisibilityChanged(SystemUiVisibilityInfo args) { 5209 if (mSeq != args.seq) { 5210 // The sequence has changed, so we need to update our value and make 5211 // sure to do a traversal afterward so the window manager is given our 5212 // most recent data. 5213 mSeq = args.seq; 5214 mAttachInfo.mForceReportNewAttributes = true; 5215 scheduleTraversals(); 5216 } 5217 if (mView == null) return; 5218 if (args.localChanges != 0) { 5219 mView.updateLocalSystemUiVisibility(args.localValue, args.localChanges); 5220 } 5221 5222 int visibility = args.globalVisibility&View.SYSTEM_UI_CLEARABLE_FLAGS; 5223 if (visibility != mAttachInfo.mGlobalSystemUiVisibility) { 5224 mAttachInfo.mGlobalSystemUiVisibility = visibility; 5225 mView.dispatchSystemUiVisibilityChanged(visibility); 5226 } 5227 } 5228 5229 public void handleDispatchDoneAnimating() { 5230 if (mWindowsAnimating) { 5231 mWindowsAnimating = false; 5232 if (!mDirty.isEmpty() || mIsAnimating || mFullRedrawNeeded) { 5233 scheduleTraversals(); 5234 } 5235 } 5236 } 5237 5238 public void handleDispatchWindowShown() { 5239 mAttachInfo.mTreeObserver.dispatchOnWindowShown(); 5240 } 5241 5242 public void getLastTouchPoint(Point outLocation) { 5243 outLocation.x = (int) mLastTouchPoint.x; 5244 outLocation.y = (int) mLastTouchPoint.y; 5245 } 5246 5247 public void setDragFocus(View newDragTarget) { 5248 if (mCurrentDragView != newDragTarget) { 5249 mCurrentDragView = newDragTarget; 5250 } 5251 } 5252 5253 private AudioManager getAudioManager() { 5254 if (mView == null) { 5255 throw new IllegalStateException("getAudioManager called when there is no mView"); 5256 } 5257 if (mAudioManager == null) { 5258 mAudioManager = (AudioManager) mView.getContext().getSystemService(Context.AUDIO_SERVICE); 5259 } 5260 return mAudioManager; 5261 } 5262 5263 public AccessibilityInteractionController getAccessibilityInteractionController() { 5264 if (mView == null) { 5265 throw new IllegalStateException("getAccessibilityInteractionController" 5266 + " called when there is no mView"); 5267 } 5268 if (mAccessibilityInteractionController == null) { 5269 mAccessibilityInteractionController = new AccessibilityInteractionController(this); 5270 } 5271 return mAccessibilityInteractionController; 5272 } 5273 5274 private int relayoutWindow(WindowManager.LayoutParams params, int viewVisibility, 5275 boolean insetsPending) throws RemoteException { 5276 5277 float appScale = mAttachInfo.mApplicationScale; 5278 boolean restore = false; 5279 if (params != null && mTranslator != null) { 5280 restore = true; 5281 params.backup(); 5282 mTranslator.translateWindowLayout(params); 5283 } 5284 if (params != null) { 5285 if (DBG) Log.d(TAG, "WindowLayout in layoutWindow:" + params); 5286 } 5287 mPendingConfiguration.seq = 0; 5288 //Log.d(TAG, ">>>>>> CALLING relayout"); 5289 if (params != null && mOrigWindowType != params.type) { 5290 // For compatibility with old apps, don't crash here. 5291 if (mTargetSdkVersion < android.os.Build.VERSION_CODES.ICE_CREAM_SANDWICH) { 5292 Slog.w(TAG, "Window type can not be changed after " 5293 + "the window is added; ignoring change of " + mView); 5294 params.type = mOrigWindowType; 5295 } 5296 } 5297 int relayoutResult = mWindowSession.relayout( 5298 mWindow, mSeq, params, 5299 (int) (mView.getMeasuredWidth() * appScale + 0.5f), 5300 (int) (mView.getMeasuredHeight() * appScale + 0.5f), 5301 viewVisibility, insetsPending ? WindowManagerGlobal.RELAYOUT_INSETS_PENDING : 0, 5302 mWinFrame, mPendingOverscanInsets, mPendingContentInsets, mPendingVisibleInsets, 5303 mPendingStableInsets, mPendingConfiguration, mSurface); 5304 //Log.d(TAG, "<<<<<< BACK FROM relayout"); 5305 if (restore) { 5306 params.restore(); 5307 } 5308 5309 if (mTranslator != null) { 5310 mTranslator.translateRectInScreenToAppWinFrame(mWinFrame); 5311 mTranslator.translateRectInScreenToAppWindow(mPendingOverscanInsets); 5312 mTranslator.translateRectInScreenToAppWindow(mPendingContentInsets); 5313 mTranslator.translateRectInScreenToAppWindow(mPendingVisibleInsets); 5314 mTranslator.translateRectInScreenToAppWindow(mPendingStableInsets); 5315 } 5316 return relayoutResult; 5317 } 5318 5319 /** 5320 * {@inheritDoc} 5321 */ 5322 @Override 5323 public void playSoundEffect(int effectId) { 5324 checkThread(); 5325 5326 if (mMediaDisabled) { 5327 return; 5328 } 5329 5330 try { 5331 final AudioManager audioManager = getAudioManager(); 5332 5333 switch (effectId) { 5334 case SoundEffectConstants.CLICK: 5335 audioManager.playSoundEffect(AudioManager.FX_KEY_CLICK); 5336 return; 5337 case SoundEffectConstants.NAVIGATION_DOWN: 5338 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_DOWN); 5339 return; 5340 case SoundEffectConstants.NAVIGATION_LEFT: 5341 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_LEFT); 5342 return; 5343 case SoundEffectConstants.NAVIGATION_RIGHT: 5344 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_RIGHT); 5345 return; 5346 case SoundEffectConstants.NAVIGATION_UP: 5347 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_UP); 5348 return; 5349 default: 5350 throw new IllegalArgumentException("unknown effect id " + effectId + 5351 " not defined in " + SoundEffectConstants.class.getCanonicalName()); 5352 } 5353 } catch (IllegalStateException e) { 5354 // Exception thrown by getAudioManager() when mView is null 5355 Log.e(TAG, "FATAL EXCEPTION when attempting to play sound effect: " + e); 5356 e.printStackTrace(); 5357 } 5358 } 5359 5360 /** 5361 * {@inheritDoc} 5362 */ 5363 @Override 5364 public boolean performHapticFeedback(int effectId, boolean always) { 5365 try { 5366 return mWindowSession.performHapticFeedback(mWindow, effectId, always); 5367 } catch (RemoteException e) { 5368 return false; 5369 } 5370 } 5371 5372 /** 5373 * {@inheritDoc} 5374 */ 5375 @Override 5376 public View focusSearch(View focused, int direction) { 5377 checkThread(); 5378 if (!(mView instanceof ViewGroup)) { 5379 return null; 5380 } 5381 return FocusFinder.getInstance().findNextFocus((ViewGroup) mView, focused, direction); 5382 } 5383 5384 public void debug() { 5385 mView.debug(); 5386 } 5387 5388 public void dump(String prefix, FileDescriptor fd, PrintWriter writer, String[] args) { 5389 String innerPrefix = prefix + " "; 5390 writer.print(prefix); writer.println("ViewRoot:"); 5391 writer.print(innerPrefix); writer.print("mAdded="); writer.print(mAdded); 5392 writer.print(" mRemoved="); writer.println(mRemoved); 5393 writer.print(innerPrefix); writer.print("mConsumeBatchedInputScheduled="); 5394 writer.println(mConsumeBatchedInputScheduled); 5395 writer.print(innerPrefix); writer.print("mConsumeBatchedInputImmediatelyScheduled="); 5396 writer.println(mConsumeBatchedInputImmediatelyScheduled); 5397 writer.print(innerPrefix); writer.print("mPendingInputEventCount="); 5398 writer.println(mPendingInputEventCount); 5399 writer.print(innerPrefix); writer.print("mProcessInputEventsScheduled="); 5400 writer.println(mProcessInputEventsScheduled); 5401 writer.print(innerPrefix); writer.print("mTraversalScheduled="); 5402 writer.print(mTraversalScheduled); 5403 if (mTraversalScheduled) { 5404 writer.print(" (barrier="); writer.print(mTraversalBarrier); writer.println(")"); 5405 } else { 5406 writer.println(); 5407 } 5408 mFirstInputStage.dump(innerPrefix, writer); 5409 5410 mChoreographer.dump(prefix, writer); 5411 5412 writer.print(prefix); writer.println("View Hierarchy:"); 5413 dumpViewHierarchy(innerPrefix, writer, mView); 5414 } 5415 5416 private void dumpViewHierarchy(String prefix, PrintWriter writer, View view) { 5417 writer.print(prefix); 5418 if (view == null) { 5419 writer.println("null"); 5420 return; 5421 } 5422 writer.println(view.toString()); 5423 if (!(view instanceof ViewGroup)) { 5424 return; 5425 } 5426 ViewGroup grp = (ViewGroup)view; 5427 final int N = grp.getChildCount(); 5428 if (N <= 0) { 5429 return; 5430 } 5431 prefix = prefix + " "; 5432 for (int i=0; i<N; i++) { 5433 dumpViewHierarchy(prefix, writer, grp.getChildAt(i)); 5434 } 5435 } 5436 5437 public void dumpGfxInfo(int[] info) { 5438 info[0] = info[1] = 0; 5439 if (mView != null) { 5440 getGfxInfo(mView, info); 5441 } 5442 } 5443 5444 private static void getGfxInfo(View view, int[] info) { 5445 RenderNode renderNode = view.mRenderNode; 5446 info[0]++; 5447 if (renderNode != null) { 5448 info[1] += renderNode.getDebugSize(); 5449 } 5450 5451 if (view instanceof ViewGroup) { 5452 ViewGroup group = (ViewGroup) view; 5453 5454 int count = group.getChildCount(); 5455 for (int i = 0; i < count; i++) { 5456 getGfxInfo(group.getChildAt(i), info); 5457 } 5458 } 5459 } 5460 5461 /** 5462 * @param immediate True, do now if not in traversal. False, put on queue and do later. 5463 * @return True, request has been queued. False, request has been completed. 5464 */ 5465 boolean die(boolean immediate) { 5466 // Make sure we do execute immediately if we are in the middle of a traversal or the damage 5467 // done by dispatchDetachedFromWindow will cause havoc on return. 5468 if (immediate && !mIsInTraversal) { 5469 doDie(); 5470 return false; 5471 } 5472 5473 if (!mIsDrawing) { 5474 destroyHardwareRenderer(); 5475 } else { 5476 Log.e(TAG, "Attempting to destroy the window while drawing!\n" + 5477 " window=" + this + ", title=" + mWindowAttributes.getTitle()); 5478 } 5479 mHandler.sendEmptyMessage(MSG_DIE); 5480 return true; 5481 } 5482 5483 void doDie() { 5484 checkThread(); 5485 if (LOCAL_LOGV) Log.v(TAG, "DIE in " + this + " of " + mSurface); 5486 synchronized (this) { 5487 if (mRemoved) { 5488 return; 5489 } 5490 mRemoved = true; 5491 if (mAdded) { 5492 dispatchDetachedFromWindow(); 5493 } 5494 5495 if (mAdded && !mFirst) { 5496 destroyHardwareRenderer(); 5497 5498 if (mView != null) { 5499 int viewVisibility = mView.getVisibility(); 5500 boolean viewVisibilityChanged = mViewVisibility != viewVisibility; 5501 if (mWindowAttributesChanged || viewVisibilityChanged) { 5502 // If layout params have been changed, first give them 5503 // to the window manager to make sure it has the correct 5504 // animation info. 5505 try { 5506 if ((relayoutWindow(mWindowAttributes, viewVisibility, false) 5507 & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 5508 mWindowSession.finishDrawing(mWindow); 5509 } 5510 } catch (RemoteException e) { 5511 } 5512 } 5513 5514 mSurface.release(); 5515 } 5516 } 5517 5518 mAdded = false; 5519 } 5520 WindowManagerGlobal.getInstance().doRemoveView(this); 5521 } 5522 5523 public void requestUpdateConfiguration(Configuration config) { 5524 Message msg = mHandler.obtainMessage(MSG_UPDATE_CONFIGURATION, config); 5525 mHandler.sendMessage(msg); 5526 } 5527 5528 public void loadSystemProperties() { 5529 mHandler.post(new Runnable() { 5530 @Override 5531 public void run() { 5532 // Profiling 5533 mProfileRendering = SystemProperties.getBoolean(PROPERTY_PROFILE_RENDERING, false); 5534 profileRendering(mAttachInfo.mHasWindowFocus); 5535 5536 // Media (used by sound effects) 5537 mMediaDisabled = SystemProperties.getBoolean(PROPERTY_MEDIA_DISABLED, false); 5538 5539 // Hardware rendering 5540 if (mAttachInfo.mHardwareRenderer != null) { 5541 if (mAttachInfo.mHardwareRenderer.loadSystemProperties()) { 5542 invalidate(); 5543 } 5544 } 5545 5546 // Layout debugging 5547 boolean layout = SystemProperties.getBoolean(View.DEBUG_LAYOUT_PROPERTY, false); 5548 if (layout != mAttachInfo.mDebugLayout) { 5549 mAttachInfo.mDebugLayout = layout; 5550 if (!mHandler.hasMessages(MSG_INVALIDATE_WORLD)) { 5551 mHandler.sendEmptyMessageDelayed(MSG_INVALIDATE_WORLD, 200); 5552 } 5553 } 5554 5555 // detect emulator 5556 mIsEmulator = Build.HARDWARE.contains("goldfish"); 5557 mIsCircularEmulator = 5558 SystemProperties.getBoolean(PROPERTY_EMULATOR_CIRCULAR, false); 5559 } 5560 }); 5561 } 5562 5563 private void destroyHardwareRenderer() { 5564 HardwareRenderer hardwareRenderer = mAttachInfo.mHardwareRenderer; 5565 5566 if (hardwareRenderer != null) { 5567 if (mView != null) { 5568 hardwareRenderer.destroyHardwareResources(mView); 5569 } 5570 hardwareRenderer.destroy(); 5571 hardwareRenderer.setRequested(false); 5572 5573 mAttachInfo.mHardwareRenderer = null; 5574 mAttachInfo.mHardwareAccelerated = false; 5575 } 5576 } 5577 5578 public void dispatchFinishInputConnection(InputConnection connection) { 5579 Message msg = mHandler.obtainMessage(MSG_FINISH_INPUT_CONNECTION, connection); 5580 mHandler.sendMessage(msg); 5581 } 5582 5583 public void dispatchResized(Rect frame, Rect overscanInsets, Rect contentInsets, 5584 Rect visibleInsets, Rect stableInsets, boolean reportDraw, Configuration newConfig) { 5585 if (DEBUG_LAYOUT) Log.v(TAG, "Resizing " + this + ": frame=" + frame.toShortString() 5586 + " contentInsets=" + contentInsets.toShortString() 5587 + " visibleInsets=" + visibleInsets.toShortString() 5588 + " reportDraw=" + reportDraw); 5589 Message msg = mHandler.obtainMessage(reportDraw ? MSG_RESIZED_REPORT : MSG_RESIZED); 5590 if (mTranslator != null) { 5591 mTranslator.translateRectInScreenToAppWindow(frame); 5592 mTranslator.translateRectInScreenToAppWindow(overscanInsets); 5593 mTranslator.translateRectInScreenToAppWindow(contentInsets); 5594 mTranslator.translateRectInScreenToAppWindow(visibleInsets); 5595 } 5596 SomeArgs args = SomeArgs.obtain(); 5597 final boolean sameProcessCall = (Binder.getCallingPid() == android.os.Process.myPid()); 5598 args.arg1 = sameProcessCall ? new Rect(frame) : frame; 5599 args.arg2 = sameProcessCall ? new Rect(contentInsets) : contentInsets; 5600 args.arg3 = sameProcessCall ? new Rect(visibleInsets) : visibleInsets; 5601 args.arg4 = sameProcessCall && newConfig != null ? new Configuration(newConfig) : newConfig; 5602 args.arg5 = sameProcessCall ? new Rect(overscanInsets) : overscanInsets; 5603 args.arg6 = sameProcessCall ? new Rect(stableInsets) : stableInsets; 5604 msg.obj = args; 5605 mHandler.sendMessage(msg); 5606 } 5607 5608 public void dispatchMoved(int newX, int newY) { 5609 if (DEBUG_LAYOUT) Log.v(TAG, "Window moved " + this + ": newX=" + newX + " newY=" + newY); 5610 if (mTranslator != null) { 5611 PointF point = new PointF(newX, newY); 5612 mTranslator.translatePointInScreenToAppWindow(point); 5613 newX = (int) (point.x + 0.5); 5614 newY = (int) (point.y + 0.5); 5615 } 5616 Message msg = mHandler.obtainMessage(MSG_WINDOW_MOVED, newX, newY); 5617 mHandler.sendMessage(msg); 5618 } 5619 5620 /** 5621 * Represents a pending input event that is waiting in a queue. 5622 * 5623 * Input events are processed in serial order by the timestamp specified by 5624 * {@link InputEvent#getEventTimeNano()}. In general, the input dispatcher delivers 5625 * one input event to the application at a time and waits for the application 5626 * to finish handling it before delivering the next one. 5627 * 5628 * However, because the application or IME can synthesize and inject multiple 5629 * key events at a time without going through the input dispatcher, we end up 5630 * needing a queue on the application's side. 5631 */ 5632 private static final class QueuedInputEvent { 5633 public static final int FLAG_DELIVER_POST_IME = 1 << 0; 5634 public static final int FLAG_DEFERRED = 1 << 1; 5635 public static final int FLAG_FINISHED = 1 << 2; 5636 public static final int FLAG_FINISHED_HANDLED = 1 << 3; 5637 public static final int FLAG_RESYNTHESIZED = 1 << 4; 5638 public static final int FLAG_UNHANDLED = 1 << 5; 5639 5640 public QueuedInputEvent mNext; 5641 5642 public InputEvent mEvent; 5643 public InputEventReceiver mReceiver; 5644 public int mFlags; 5645 5646 public boolean shouldSkipIme() { 5647 if ((mFlags & FLAG_DELIVER_POST_IME) != 0) { 5648 return true; 5649 } 5650 return mEvent instanceof MotionEvent 5651 && mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER); 5652 } 5653 5654 public boolean shouldSendToSynthesizer() { 5655 if ((mFlags & FLAG_UNHANDLED) != 0) { 5656 return true; 5657 } 5658 5659 return false; 5660 } 5661 5662 @Override 5663 public String toString() { 5664 StringBuilder sb = new StringBuilder("QueuedInputEvent{flags="); 5665 boolean hasPrevious = false; 5666 hasPrevious = flagToString("DELIVER_POST_IME", FLAG_DELIVER_POST_IME, hasPrevious, sb); 5667 hasPrevious = flagToString("DEFERRED", FLAG_DEFERRED, hasPrevious, sb); 5668 hasPrevious = flagToString("FINISHED", FLAG_FINISHED, hasPrevious, sb); 5669 hasPrevious = flagToString("FINISHED_HANDLED", FLAG_FINISHED_HANDLED, hasPrevious, sb); 5670 hasPrevious = flagToString("RESYNTHESIZED", FLAG_RESYNTHESIZED, hasPrevious, sb); 5671 hasPrevious = flagToString("UNHANDLED", FLAG_UNHANDLED, hasPrevious, sb); 5672 if (!hasPrevious) { 5673 sb.append("0"); 5674 } 5675 sb.append(", hasNextQueuedEvent=" + (mEvent != null ? "true" : "false")); 5676 sb.append(", hasInputEventReceiver=" + (mReceiver != null ? "true" : "false")); 5677 sb.append(", mEvent=" + mEvent + "}"); 5678 return sb.toString(); 5679 } 5680 5681 private boolean flagToString(String name, int flag, 5682 boolean hasPrevious, StringBuilder sb) { 5683 if ((mFlags & flag) != 0) { 5684 if (hasPrevious) { 5685 sb.append("|"); 5686 } 5687 sb.append(name); 5688 return true; 5689 } 5690 return hasPrevious; 5691 } 5692 } 5693 5694 private QueuedInputEvent obtainQueuedInputEvent(InputEvent event, 5695 InputEventReceiver receiver, int flags) { 5696 QueuedInputEvent q = mQueuedInputEventPool; 5697 if (q != null) { 5698 mQueuedInputEventPoolSize -= 1; 5699 mQueuedInputEventPool = q.mNext; 5700 q.mNext = null; 5701 } else { 5702 q = new QueuedInputEvent(); 5703 } 5704 5705 q.mEvent = event; 5706 q.mReceiver = receiver; 5707 q.mFlags = flags; 5708 return q; 5709 } 5710 5711 private void recycleQueuedInputEvent(QueuedInputEvent q) { 5712 q.mEvent = null; 5713 q.mReceiver = null; 5714 5715 if (mQueuedInputEventPoolSize < MAX_QUEUED_INPUT_EVENT_POOL_SIZE) { 5716 mQueuedInputEventPoolSize += 1; 5717 q.mNext = mQueuedInputEventPool; 5718 mQueuedInputEventPool = q; 5719 } 5720 } 5721 5722 void enqueueInputEvent(InputEvent event) { 5723 enqueueInputEvent(event, null, 0, false); 5724 } 5725 5726 void enqueueInputEvent(InputEvent event, 5727 InputEventReceiver receiver, int flags, boolean processImmediately) { 5728 QueuedInputEvent q = obtainQueuedInputEvent(event, receiver, flags); 5729 5730 // Always enqueue the input event in order, regardless of its time stamp. 5731 // We do this because the application or the IME may inject key events 5732 // in response to touch events and we want to ensure that the injected keys 5733 // are processed in the order they were received and we cannot trust that 5734 // the time stamp of injected events are monotonic. 5735 QueuedInputEvent last = mPendingInputEventTail; 5736 if (last == null) { 5737 mPendingInputEventHead = q; 5738 mPendingInputEventTail = q; 5739 } else { 5740 last.mNext = q; 5741 mPendingInputEventTail = q; 5742 } 5743 mPendingInputEventCount += 1; 5744 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 5745 mPendingInputEventCount); 5746 5747 if (processImmediately) { 5748 doProcessInputEvents(); 5749 } else { 5750 scheduleProcessInputEvents(); 5751 } 5752 } 5753 5754 private void scheduleProcessInputEvents() { 5755 if (!mProcessInputEventsScheduled) { 5756 mProcessInputEventsScheduled = true; 5757 Message msg = mHandler.obtainMessage(MSG_PROCESS_INPUT_EVENTS); 5758 msg.setAsynchronous(true); 5759 mHandler.sendMessage(msg); 5760 } 5761 } 5762 5763 void doProcessInputEvents() { 5764 // Deliver all pending input events in the queue. 5765 while (mPendingInputEventHead != null) { 5766 QueuedInputEvent q = mPendingInputEventHead; 5767 mPendingInputEventHead = q.mNext; 5768 if (mPendingInputEventHead == null) { 5769 mPendingInputEventTail = null; 5770 } 5771 q.mNext = null; 5772 5773 mPendingInputEventCount -= 1; 5774 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 5775 mPendingInputEventCount); 5776 5777 deliverInputEvent(q); 5778 } 5779 5780 // We are done processing all input events that we can process right now 5781 // so we can clear the pending flag immediately. 5782 if (mProcessInputEventsScheduled) { 5783 mProcessInputEventsScheduled = false; 5784 mHandler.removeMessages(MSG_PROCESS_INPUT_EVENTS); 5785 } 5786 } 5787 5788 private void deliverInputEvent(QueuedInputEvent q) { 5789 Trace.asyncTraceBegin(Trace.TRACE_TAG_VIEW, "deliverInputEvent", 5790 q.mEvent.getSequenceNumber()); 5791 if (mInputEventConsistencyVerifier != null) { 5792 mInputEventConsistencyVerifier.onInputEvent(q.mEvent, 0); 5793 } 5794 5795 InputStage stage; 5796 if (q.shouldSendToSynthesizer()) { 5797 stage = mSyntheticInputStage; 5798 } else { 5799 stage = q.shouldSkipIme() ? mFirstPostImeInputStage : mFirstInputStage; 5800 } 5801 5802 if (stage != null) { 5803 stage.deliver(q); 5804 } else { 5805 finishInputEvent(q); 5806 } 5807 } 5808 5809 private void finishInputEvent(QueuedInputEvent q) { 5810 Trace.asyncTraceEnd(Trace.TRACE_TAG_VIEW, "deliverInputEvent", 5811 q.mEvent.getSequenceNumber()); 5812 5813 if (q.mReceiver != null) { 5814 boolean handled = (q.mFlags & QueuedInputEvent.FLAG_FINISHED_HANDLED) != 0; 5815 q.mReceiver.finishInputEvent(q.mEvent, handled); 5816 } else { 5817 q.mEvent.recycleIfNeededAfterDispatch(); 5818 } 5819 5820 recycleQueuedInputEvent(q); 5821 } 5822 5823 static boolean isTerminalInputEvent(InputEvent event) { 5824 if (event instanceof KeyEvent) { 5825 final KeyEvent keyEvent = (KeyEvent)event; 5826 return keyEvent.getAction() == KeyEvent.ACTION_UP; 5827 } else { 5828 final MotionEvent motionEvent = (MotionEvent)event; 5829 final int action = motionEvent.getAction(); 5830 return action == MotionEvent.ACTION_UP 5831 || action == MotionEvent.ACTION_CANCEL 5832 || action == MotionEvent.ACTION_HOVER_EXIT; 5833 } 5834 } 5835 5836 void scheduleConsumeBatchedInput() { 5837 if (!mConsumeBatchedInputScheduled) { 5838 mConsumeBatchedInputScheduled = true; 5839 mChoreographer.postCallback(Choreographer.CALLBACK_INPUT, 5840 mConsumedBatchedInputRunnable, null); 5841 } 5842 } 5843 5844 void unscheduleConsumeBatchedInput() { 5845 if (mConsumeBatchedInputScheduled) { 5846 mConsumeBatchedInputScheduled = false; 5847 mChoreographer.removeCallbacks(Choreographer.CALLBACK_INPUT, 5848 mConsumedBatchedInputRunnable, null); 5849 } 5850 } 5851 5852 void scheduleConsumeBatchedInputImmediately() { 5853 if (!mConsumeBatchedInputImmediatelyScheduled) { 5854 unscheduleConsumeBatchedInput(); 5855 mConsumeBatchedInputImmediatelyScheduled = true; 5856 mHandler.post(mConsumeBatchedInputImmediatelyRunnable); 5857 } 5858 } 5859 5860 void doConsumeBatchedInput(long frameTimeNanos) { 5861 if (mConsumeBatchedInputScheduled) { 5862 mConsumeBatchedInputScheduled = false; 5863 if (mInputEventReceiver != null) { 5864 if (mInputEventReceiver.consumeBatchedInputEvents(frameTimeNanos) 5865 && frameTimeNanos != -1) { 5866 // If we consumed a batch here, we want to go ahead and schedule the 5867 // consumption of batched input events on the next frame. Otherwise, we would 5868 // wait until we have more input events pending and might get starved by other 5869 // things occurring in the process. If the frame time is -1, however, then 5870 // we're in a non-batching mode, so there's no need to schedule this. 5871 scheduleConsumeBatchedInput(); 5872 } 5873 } 5874 doProcessInputEvents(); 5875 } 5876 } 5877 5878 final class TraversalRunnable implements Runnable { 5879 @Override 5880 public void run() { 5881 doTraversal(); 5882 } 5883 } 5884 final TraversalRunnable mTraversalRunnable = new TraversalRunnable(); 5885 5886 final class WindowInputEventReceiver extends InputEventReceiver { 5887 public WindowInputEventReceiver(InputChannel inputChannel, Looper looper) { 5888 super(inputChannel, looper); 5889 } 5890 5891 @Override 5892 public void onInputEvent(InputEvent event) { 5893 enqueueInputEvent(event, this, 0, true); 5894 } 5895 5896 @Override 5897 public void onBatchedInputEventPending() { 5898 if (mUnbufferedInputDispatch) { 5899 super.onBatchedInputEventPending(); 5900 } else { 5901 scheduleConsumeBatchedInput(); 5902 } 5903 } 5904 5905 @Override 5906 public void dispose() { 5907 unscheduleConsumeBatchedInput(); 5908 super.dispose(); 5909 } 5910 } 5911 WindowInputEventReceiver mInputEventReceiver; 5912 5913 final class ConsumeBatchedInputRunnable implements Runnable { 5914 @Override 5915 public void run() { 5916 doConsumeBatchedInput(mChoreographer.getFrameTimeNanos()); 5917 } 5918 } 5919 final ConsumeBatchedInputRunnable mConsumedBatchedInputRunnable = 5920 new ConsumeBatchedInputRunnable(); 5921 boolean mConsumeBatchedInputScheduled; 5922 5923 final class ConsumeBatchedInputImmediatelyRunnable implements Runnable { 5924 @Override 5925 public void run() { 5926 doConsumeBatchedInput(-1); 5927 } 5928 } 5929 final ConsumeBatchedInputImmediatelyRunnable mConsumeBatchedInputImmediatelyRunnable = 5930 new ConsumeBatchedInputImmediatelyRunnable(); 5931 boolean mConsumeBatchedInputImmediatelyScheduled; 5932 5933 final class InvalidateOnAnimationRunnable implements Runnable { 5934 private boolean mPosted; 5935 private final ArrayList<View> mViews = new ArrayList<View>(); 5936 private final ArrayList<AttachInfo.InvalidateInfo> mViewRects = 5937 new ArrayList<AttachInfo.InvalidateInfo>(); 5938 private View[] mTempViews; 5939 private AttachInfo.InvalidateInfo[] mTempViewRects; 5940 5941 public void addView(View view) { 5942 synchronized (this) { 5943 mViews.add(view); 5944 postIfNeededLocked(); 5945 } 5946 } 5947 5948 public void addViewRect(AttachInfo.InvalidateInfo info) { 5949 synchronized (this) { 5950 mViewRects.add(info); 5951 postIfNeededLocked(); 5952 } 5953 } 5954 5955 public void removeView(View view) { 5956 synchronized (this) { 5957 mViews.remove(view); 5958 5959 for (int i = mViewRects.size(); i-- > 0; ) { 5960 AttachInfo.InvalidateInfo info = mViewRects.get(i); 5961 if (info.target == view) { 5962 mViewRects.remove(i); 5963 info.recycle(); 5964 } 5965 } 5966 5967 if (mPosted && mViews.isEmpty() && mViewRects.isEmpty()) { 5968 mChoreographer.removeCallbacks(Choreographer.CALLBACK_ANIMATION, this, null); 5969 mPosted = false; 5970 } 5971 } 5972 } 5973 5974 @Override 5975 public void run() { 5976 final int viewCount; 5977 final int viewRectCount; 5978 synchronized (this) { 5979 mPosted = false; 5980 5981 viewCount = mViews.size(); 5982 if (viewCount != 0) { 5983 mTempViews = mViews.toArray(mTempViews != null 5984 ? mTempViews : new View[viewCount]); 5985 mViews.clear(); 5986 } 5987 5988 viewRectCount = mViewRects.size(); 5989 if (viewRectCount != 0) { 5990 mTempViewRects = mViewRects.toArray(mTempViewRects != null 5991 ? mTempViewRects : new AttachInfo.InvalidateInfo[viewRectCount]); 5992 mViewRects.clear(); 5993 } 5994 } 5995 5996 for (int i = 0; i < viewCount; i++) { 5997 mTempViews[i].invalidate(); 5998 mTempViews[i] = null; 5999 } 6000 6001 for (int i = 0; i < viewRectCount; i++) { 6002 final View.AttachInfo.InvalidateInfo info = mTempViewRects[i]; 6003 info.target.invalidate(info.left, info.top, info.right, info.bottom); 6004 info.recycle(); 6005 } 6006 } 6007 6008 private void postIfNeededLocked() { 6009 if (!mPosted) { 6010 mChoreographer.postCallback(Choreographer.CALLBACK_ANIMATION, this, null); 6011 mPosted = true; 6012 } 6013 } 6014 } 6015 final InvalidateOnAnimationRunnable mInvalidateOnAnimationRunnable = 6016 new InvalidateOnAnimationRunnable(); 6017 6018 public void dispatchInvalidateDelayed(View view, long delayMilliseconds) { 6019 Message msg = mHandler.obtainMessage(MSG_INVALIDATE, view); 6020 mHandler.sendMessageDelayed(msg, delayMilliseconds); 6021 } 6022 6023 public void dispatchInvalidateRectDelayed(AttachInfo.InvalidateInfo info, 6024 long delayMilliseconds) { 6025 final Message msg = mHandler.obtainMessage(MSG_INVALIDATE_RECT, info); 6026 mHandler.sendMessageDelayed(msg, delayMilliseconds); 6027 } 6028 6029 public void dispatchInvalidateOnAnimation(View view) { 6030 mInvalidateOnAnimationRunnable.addView(view); 6031 } 6032 6033 public void dispatchInvalidateRectOnAnimation(AttachInfo.InvalidateInfo info) { 6034 mInvalidateOnAnimationRunnable.addViewRect(info); 6035 } 6036 6037 public void cancelInvalidate(View view) { 6038 mHandler.removeMessages(MSG_INVALIDATE, view); 6039 // fixme: might leak the AttachInfo.InvalidateInfo objects instead of returning 6040 // them to the pool 6041 mHandler.removeMessages(MSG_INVALIDATE_RECT, view); 6042 mInvalidateOnAnimationRunnable.removeView(view); 6043 } 6044 6045 public void dispatchInputEvent(InputEvent event) { 6046 dispatchInputEvent(event, null); 6047 } 6048 6049 public void dispatchInputEvent(InputEvent event, InputEventReceiver receiver) { 6050 SomeArgs args = SomeArgs.obtain(); 6051 args.arg1 = event; 6052 args.arg2 = receiver; 6053 Message msg = mHandler.obtainMessage(MSG_DISPATCH_INPUT_EVENT, args); 6054 msg.setAsynchronous(true); 6055 mHandler.sendMessage(msg); 6056 } 6057 6058 public void synthesizeInputEvent(InputEvent event) { 6059 Message msg = mHandler.obtainMessage(MSG_SYNTHESIZE_INPUT_EVENT, event); 6060 msg.setAsynchronous(true); 6061 mHandler.sendMessage(msg); 6062 } 6063 6064 public void dispatchKeyFromIme(KeyEvent event) { 6065 Message msg = mHandler.obtainMessage(MSG_DISPATCH_KEY_FROM_IME, event); 6066 msg.setAsynchronous(true); 6067 mHandler.sendMessage(msg); 6068 } 6069 6070 /** 6071 * Reinject unhandled {@link InputEvent}s in order to synthesize fallbacks events. 6072 * 6073 * Note that it is the responsibility of the caller of this API to recycle the InputEvent it 6074 * passes in. 6075 */ 6076 public void dispatchUnhandledInputEvent(InputEvent event) { 6077 if (event instanceof MotionEvent) { 6078 event = MotionEvent.obtain((MotionEvent) event); 6079 } 6080 synthesizeInputEvent(event); 6081 } 6082 6083 public void dispatchAppVisibility(boolean visible) { 6084 Message msg = mHandler.obtainMessage(MSG_DISPATCH_APP_VISIBILITY); 6085 msg.arg1 = visible ? 1 : 0; 6086 mHandler.sendMessage(msg); 6087 } 6088 6089 public void dispatchGetNewSurface() { 6090 Message msg = mHandler.obtainMessage(MSG_DISPATCH_GET_NEW_SURFACE); 6091 mHandler.sendMessage(msg); 6092 } 6093 6094 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 6095 Message msg = Message.obtain(); 6096 msg.what = MSG_WINDOW_FOCUS_CHANGED; 6097 msg.arg1 = hasFocus ? 1 : 0; 6098 msg.arg2 = inTouchMode ? 1 : 0; 6099 mHandler.sendMessage(msg); 6100 } 6101 6102 public void dispatchWindowShown() { 6103 mHandler.sendEmptyMessage(MSG_DISPATCH_WINDOW_SHOWN); 6104 } 6105 6106 public void dispatchCloseSystemDialogs(String reason) { 6107 Message msg = Message.obtain(); 6108 msg.what = MSG_CLOSE_SYSTEM_DIALOGS; 6109 msg.obj = reason; 6110 mHandler.sendMessage(msg); 6111 } 6112 6113 public void dispatchDragEvent(DragEvent event) { 6114 final int what; 6115 if (event.getAction() == DragEvent.ACTION_DRAG_LOCATION) { 6116 what = MSG_DISPATCH_DRAG_LOCATION_EVENT; 6117 mHandler.removeMessages(what); 6118 } else { 6119 what = MSG_DISPATCH_DRAG_EVENT; 6120 } 6121 Message msg = mHandler.obtainMessage(what, event); 6122 mHandler.sendMessage(msg); 6123 } 6124 6125 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 6126 int localValue, int localChanges) { 6127 SystemUiVisibilityInfo args = new SystemUiVisibilityInfo(); 6128 args.seq = seq; 6129 args.globalVisibility = globalVisibility; 6130 args.localValue = localValue; 6131 args.localChanges = localChanges; 6132 mHandler.sendMessage(mHandler.obtainMessage(MSG_DISPATCH_SYSTEM_UI_VISIBILITY, args)); 6133 } 6134 6135 public void dispatchDoneAnimating() { 6136 mHandler.sendEmptyMessage(MSG_DISPATCH_DONE_ANIMATING); 6137 } 6138 6139 public void dispatchCheckFocus() { 6140 if (!mHandler.hasMessages(MSG_CHECK_FOCUS)) { 6141 // This will result in a call to checkFocus() below. 6142 mHandler.sendEmptyMessage(MSG_CHECK_FOCUS); 6143 } 6144 } 6145 6146 /** 6147 * Post a callback to send a 6148 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 6149 * This event is send at most once every 6150 * {@link ViewConfiguration#getSendRecurringAccessibilityEventsInterval()}. 6151 */ 6152 private void postSendWindowContentChangedCallback(View source, int changeType) { 6153 if (mSendWindowContentChangedAccessibilityEvent == null) { 6154 mSendWindowContentChangedAccessibilityEvent = 6155 new SendWindowContentChangedAccessibilityEvent(); 6156 } 6157 mSendWindowContentChangedAccessibilityEvent.runOrPost(source, changeType); 6158 } 6159 6160 /** 6161 * Remove a posted callback to send a 6162 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 6163 */ 6164 private void removeSendWindowContentChangedCallback() { 6165 if (mSendWindowContentChangedAccessibilityEvent != null) { 6166 mHandler.removeCallbacks(mSendWindowContentChangedAccessibilityEvent); 6167 } 6168 } 6169 6170 @Override 6171 public boolean showContextMenuForChild(View originalView) { 6172 return false; 6173 } 6174 6175 @Override 6176 public ActionMode startActionModeForChild(View originalView, ActionMode.Callback callback) { 6177 return null; 6178 } 6179 6180 @Override 6181 public void createContextMenu(ContextMenu menu) { 6182 } 6183 6184 @Override 6185 public void childDrawableStateChanged(View child) { 6186 } 6187 6188 @Override 6189 public boolean requestSendAccessibilityEvent(View child, AccessibilityEvent event) { 6190 if (mView == null) { 6191 return false; 6192 } 6193 // Intercept accessibility focus events fired by virtual nodes to keep 6194 // track of accessibility focus position in such nodes. 6195 final int eventType = event.getEventType(); 6196 switch (eventType) { 6197 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUSED: { 6198 final long sourceNodeId = event.getSourceNodeId(); 6199 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 6200 sourceNodeId); 6201 View source = mView.findViewByAccessibilityId(accessibilityViewId); 6202 if (source != null) { 6203 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 6204 if (provider != null) { 6205 final int virtualNodeId = AccessibilityNodeInfo.getVirtualDescendantId( 6206 sourceNodeId); 6207 final AccessibilityNodeInfo node; 6208 if (virtualNodeId == AccessibilityNodeInfo.UNDEFINED_ITEM_ID) { 6209 node = provider.createAccessibilityNodeInfo( 6210 AccessibilityNodeProvider.HOST_VIEW_ID); 6211 } else { 6212 node = provider.createAccessibilityNodeInfo(virtualNodeId); 6213 } 6214 setAccessibilityFocus(source, node); 6215 } 6216 } 6217 } break; 6218 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUS_CLEARED: { 6219 final long sourceNodeId = event.getSourceNodeId(); 6220 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 6221 sourceNodeId); 6222 View source = mView.findViewByAccessibilityId(accessibilityViewId); 6223 if (source != null) { 6224 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 6225 if (provider != null) { 6226 setAccessibilityFocus(null, null); 6227 } 6228 } 6229 } break; 6230 6231 6232 case AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED: { 6233 if (mAccessibilityFocusedHost != null && mAccessibilityFocusedVirtualView != null) { 6234 // We care only for changes rooted in the focused host. 6235 final long eventSourceId = event.getSourceNodeId(); 6236 final int hostViewId = AccessibilityNodeInfo.getAccessibilityViewId( 6237 eventSourceId); 6238 if (hostViewId != mAccessibilityFocusedHost.getAccessibilityViewId()) { 6239 break; 6240 } 6241 6242 // We only care about changes that may change the virtual focused view bounds. 6243 final int changes = event.getContentChangeTypes(); 6244 if ((changes & AccessibilityEvent.CONTENT_CHANGE_TYPE_SUBTREE) != 0 6245 || changes == AccessibilityEvent.CONTENT_CHANGE_TYPE_UNDEFINED) { 6246 AccessibilityNodeProvider provider = mAccessibilityFocusedHost 6247 .getAccessibilityNodeProvider(); 6248 if (provider != null) { 6249 final int virtualChildId = AccessibilityNodeInfo.getVirtualDescendantId( 6250 mAccessibilityFocusedVirtualView.getSourceNodeId()); 6251 if (virtualChildId == AccessibilityNodeInfo.UNDEFINED_ITEM_ID) { 6252 mAccessibilityFocusedVirtualView = provider 6253 .createAccessibilityNodeInfo( 6254 AccessibilityNodeProvider.HOST_VIEW_ID); 6255 } else { 6256 mAccessibilityFocusedVirtualView = provider 6257 .createAccessibilityNodeInfo(virtualChildId); 6258 } 6259 } 6260 } 6261 } 6262 } break; 6263 } 6264 mAccessibilityManager.sendAccessibilityEvent(event); 6265 return true; 6266 } 6267 6268 @Override 6269 public void notifySubtreeAccessibilityStateChanged(View child, View source, int changeType) { 6270 postSendWindowContentChangedCallback(source, changeType); 6271 } 6272 6273 @Override 6274 public boolean canResolveLayoutDirection() { 6275 return true; 6276 } 6277 6278 @Override 6279 public boolean isLayoutDirectionResolved() { 6280 return true; 6281 } 6282 6283 @Override 6284 public int getLayoutDirection() { 6285 return View.LAYOUT_DIRECTION_RESOLVED_DEFAULT; 6286 } 6287 6288 @Override 6289 public boolean canResolveTextDirection() { 6290 return true; 6291 } 6292 6293 @Override 6294 public boolean isTextDirectionResolved() { 6295 return true; 6296 } 6297 6298 @Override 6299 public int getTextDirection() { 6300 return View.TEXT_DIRECTION_RESOLVED_DEFAULT; 6301 } 6302 6303 @Override 6304 public boolean canResolveTextAlignment() { 6305 return true; 6306 } 6307 6308 @Override 6309 public boolean isTextAlignmentResolved() { 6310 return true; 6311 } 6312 6313 @Override 6314 public int getTextAlignment() { 6315 return View.TEXT_ALIGNMENT_RESOLVED_DEFAULT; 6316 } 6317 6318 private View getCommonPredecessor(View first, View second) { 6319 if (mTempHashSet == null) { 6320 mTempHashSet = new HashSet<View>(); 6321 } 6322 HashSet<View> seen = mTempHashSet; 6323 seen.clear(); 6324 View firstCurrent = first; 6325 while (firstCurrent != null) { 6326 seen.add(firstCurrent); 6327 ViewParent firstCurrentParent = firstCurrent.mParent; 6328 if (firstCurrentParent instanceof View) { 6329 firstCurrent = (View) firstCurrentParent; 6330 } else { 6331 firstCurrent = null; 6332 } 6333 } 6334 View secondCurrent = second; 6335 while (secondCurrent != null) { 6336 if (seen.contains(secondCurrent)) { 6337 seen.clear(); 6338 return secondCurrent; 6339 } 6340 ViewParent secondCurrentParent = secondCurrent.mParent; 6341 if (secondCurrentParent instanceof View) { 6342 secondCurrent = (View) secondCurrentParent; 6343 } else { 6344 secondCurrent = null; 6345 } 6346 } 6347 seen.clear(); 6348 return null; 6349 } 6350 6351 void checkThread() { 6352 if (mThread != Thread.currentThread()) { 6353 throw new CalledFromWrongThreadException( 6354 "Only the original thread that created a view hierarchy can touch its views."); 6355 } 6356 } 6357 6358 @Override 6359 public void requestDisallowInterceptTouchEvent(boolean disallowIntercept) { 6360 // ViewAncestor never intercepts touch event, so this can be a no-op 6361 } 6362 6363 @Override 6364 public boolean requestChildRectangleOnScreen(View child, Rect rectangle, boolean immediate) { 6365 final boolean scrolled = scrollToRectOrFocus(rectangle, immediate); 6366 if (rectangle != null) { 6367 mTempRect.set(rectangle); 6368 mTempRect.offset(0, -mCurScrollY); 6369 mTempRect.offset(mAttachInfo.mWindowLeft, mAttachInfo.mWindowTop); 6370 try { 6371 mWindowSession.onRectangleOnScreenRequested(mWindow, mTempRect); 6372 } catch (RemoteException re) { 6373 /* ignore */ 6374 } 6375 } 6376 return scrolled; 6377 } 6378 6379 @Override 6380 public void childHasTransientStateChanged(View child, boolean hasTransientState) { 6381 // Do nothing. 6382 } 6383 6384 @Override 6385 public boolean onStartNestedScroll(View child, View target, int nestedScrollAxes) { 6386 return false; 6387 } 6388 6389 @Override 6390 public void onStopNestedScroll(View target) { 6391 } 6392 6393 @Override 6394 public void onNestedScrollAccepted(View child, View target, int nestedScrollAxes) { 6395 } 6396 6397 @Override 6398 public void onNestedScroll(View target, int dxConsumed, int dyConsumed, 6399 int dxUnconsumed, int dyUnconsumed) { 6400 } 6401 6402 @Override 6403 public void onNestedPreScroll(View target, int dx, int dy, int[] consumed) { 6404 } 6405 6406 @Override 6407 public boolean onNestedFling(View target, float velocityX, float velocityY, boolean consumed) { 6408 return false; 6409 } 6410 6411 @Override 6412 public boolean onNestedPreFling(View target, float velocityX, float velocityY) { 6413 return false; 6414 } 6415 6416 @Override 6417 public boolean onNestedPrePerformAccessibilityAction(View target, int action, Bundle args) { 6418 return false; 6419 } 6420 6421 void changeCanvasOpacity(boolean opaque) { 6422 Log.d(TAG, "changeCanvasOpacity: opaque=" + opaque); 6423 if (mAttachInfo.mHardwareRenderer != null) { 6424 mAttachInfo.mHardwareRenderer.setOpaque(opaque); 6425 } 6426 } 6427 6428 class TakenSurfaceHolder extends BaseSurfaceHolder { 6429 @Override 6430 public boolean onAllowLockCanvas() { 6431 return mDrawingAllowed; 6432 } 6433 6434 @Override 6435 public void onRelayoutContainer() { 6436 // Not currently interesting -- from changing between fixed and layout size. 6437 } 6438 6439 @Override 6440 public void setFormat(int format) { 6441 ((RootViewSurfaceTaker)mView).setSurfaceFormat(format); 6442 } 6443 6444 @Override 6445 public void setType(int type) { 6446 ((RootViewSurfaceTaker)mView).setSurfaceType(type); 6447 } 6448 6449 @Override 6450 public void onUpdateSurface() { 6451 // We take care of format and type changes on our own. 6452 throw new IllegalStateException("Shouldn't be here"); 6453 } 6454 6455 @Override 6456 public boolean isCreating() { 6457 return mIsCreating; 6458 } 6459 6460 @Override 6461 public void setFixedSize(int width, int height) { 6462 throw new UnsupportedOperationException( 6463 "Currently only support sizing from layout"); 6464 } 6465 6466 @Override 6467 public void setKeepScreenOn(boolean screenOn) { 6468 ((RootViewSurfaceTaker)mView).setSurfaceKeepScreenOn(screenOn); 6469 } 6470 } 6471 6472 static class W extends IWindow.Stub { 6473 private final WeakReference<ViewRootImpl> mViewAncestor; 6474 private final IWindowSession mWindowSession; 6475 6476 W(ViewRootImpl viewAncestor) { 6477 mViewAncestor = new WeakReference<ViewRootImpl>(viewAncestor); 6478 mWindowSession = viewAncestor.mWindowSession; 6479 } 6480 6481 @Override 6482 public void resized(Rect frame, Rect overscanInsets, Rect contentInsets, 6483 Rect visibleInsets, Rect stableInsets, boolean reportDraw, 6484 Configuration newConfig) { 6485 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6486 if (viewAncestor != null) { 6487 viewAncestor.dispatchResized(frame, overscanInsets, contentInsets, 6488 visibleInsets, stableInsets, reportDraw, newConfig); 6489 } 6490 } 6491 6492 @Override 6493 public void moved(int newX, int newY) { 6494 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6495 if (viewAncestor != null) { 6496 viewAncestor.dispatchMoved(newX, newY); 6497 } 6498 } 6499 6500 @Override 6501 public void dispatchAppVisibility(boolean visible) { 6502 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6503 if (viewAncestor != null) { 6504 viewAncestor.dispatchAppVisibility(visible); 6505 } 6506 } 6507 6508 @Override 6509 public void dispatchGetNewSurface() { 6510 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6511 if (viewAncestor != null) { 6512 viewAncestor.dispatchGetNewSurface(); 6513 } 6514 } 6515 6516 @Override 6517 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 6518 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6519 if (viewAncestor != null) { 6520 viewAncestor.windowFocusChanged(hasFocus, inTouchMode); 6521 } 6522 } 6523 6524 private static int checkCallingPermission(String permission) { 6525 try { 6526 return ActivityManagerNative.getDefault().checkPermission( 6527 permission, Binder.getCallingPid(), Binder.getCallingUid()); 6528 } catch (RemoteException e) { 6529 return PackageManager.PERMISSION_DENIED; 6530 } 6531 } 6532 6533 @Override 6534 public void executeCommand(String command, String parameters, ParcelFileDescriptor out) { 6535 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6536 if (viewAncestor != null) { 6537 final View view = viewAncestor.mView; 6538 if (view != null) { 6539 if (checkCallingPermission(Manifest.permission.DUMP) != 6540 PackageManager.PERMISSION_GRANTED) { 6541 throw new SecurityException("Insufficient permissions to invoke" 6542 + " executeCommand() from pid=" + Binder.getCallingPid() 6543 + ", uid=" + Binder.getCallingUid()); 6544 } 6545 6546 OutputStream clientStream = null; 6547 try { 6548 clientStream = new ParcelFileDescriptor.AutoCloseOutputStream(out); 6549 ViewDebug.dispatchCommand(view, command, parameters, clientStream); 6550 } catch (IOException e) { 6551 e.printStackTrace(); 6552 } finally { 6553 if (clientStream != null) { 6554 try { 6555 clientStream.close(); 6556 } catch (IOException e) { 6557 e.printStackTrace(); 6558 } 6559 } 6560 } 6561 } 6562 } 6563 } 6564 6565 @Override 6566 public void closeSystemDialogs(String reason) { 6567 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6568 if (viewAncestor != null) { 6569 viewAncestor.dispatchCloseSystemDialogs(reason); 6570 } 6571 } 6572 6573 @Override 6574 public void dispatchWallpaperOffsets(float x, float y, float xStep, float yStep, 6575 boolean sync) { 6576 if (sync) { 6577 try { 6578 mWindowSession.wallpaperOffsetsComplete(asBinder()); 6579 } catch (RemoteException e) { 6580 } 6581 } 6582 } 6583 6584 @Override 6585 public void dispatchWallpaperCommand(String action, int x, int y, 6586 int z, Bundle extras, boolean sync) { 6587 if (sync) { 6588 try { 6589 mWindowSession.wallpaperCommandComplete(asBinder(), null); 6590 } catch (RemoteException e) { 6591 } 6592 } 6593 } 6594 6595 /* Drag/drop */ 6596 @Override 6597 public void dispatchDragEvent(DragEvent event) { 6598 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6599 if (viewAncestor != null) { 6600 viewAncestor.dispatchDragEvent(event); 6601 } 6602 } 6603 6604 @Override 6605 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 6606 int localValue, int localChanges) { 6607 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6608 if (viewAncestor != null) { 6609 viewAncestor.dispatchSystemUiVisibilityChanged(seq, globalVisibility, 6610 localValue, localChanges); 6611 } 6612 } 6613 6614 @Override 6615 public void doneAnimating() { 6616 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6617 if (viewAncestor != null) { 6618 viewAncestor.dispatchDoneAnimating(); 6619 } 6620 } 6621 6622 @Override 6623 public void dispatchWindowShown() { 6624 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6625 if (viewAncestor != null) { 6626 viewAncestor.dispatchWindowShown(); 6627 } 6628 } 6629 } 6630 6631 public static final class CalledFromWrongThreadException extends AndroidRuntimeException { 6632 public CalledFromWrongThreadException(String msg) { 6633 super(msg); 6634 } 6635 } 6636 6637 static RunQueue getRunQueue() { 6638 RunQueue rq = sRunQueues.get(); 6639 if (rq != null) { 6640 return rq; 6641 } 6642 rq = new RunQueue(); 6643 sRunQueues.set(rq); 6644 return rq; 6645 } 6646 6647 /** 6648 * The run queue is used to enqueue pending work from Views when no Handler is 6649 * attached. The work is executed during the next call to performTraversals on 6650 * the thread. 6651 * @hide 6652 */ 6653 static final class RunQueue { 6654 private final ArrayList<HandlerAction> mActions = new ArrayList<HandlerAction>(); 6655 6656 void post(Runnable action) { 6657 postDelayed(action, 0); 6658 } 6659 6660 void postDelayed(Runnable action, long delayMillis) { 6661 HandlerAction handlerAction = new HandlerAction(); 6662 handlerAction.action = action; 6663 handlerAction.delay = delayMillis; 6664 6665 synchronized (mActions) { 6666 mActions.add(handlerAction); 6667 } 6668 } 6669 6670 void removeCallbacks(Runnable action) { 6671 final HandlerAction handlerAction = new HandlerAction(); 6672 handlerAction.action = action; 6673 6674 synchronized (mActions) { 6675 final ArrayList<HandlerAction> actions = mActions; 6676 6677 while (actions.remove(handlerAction)) { 6678 // Keep going 6679 } 6680 } 6681 } 6682 6683 void executeActions(Handler handler) { 6684 synchronized (mActions) { 6685 final ArrayList<HandlerAction> actions = mActions; 6686 final int count = actions.size(); 6687 6688 for (int i = 0; i < count; i++) { 6689 final HandlerAction handlerAction = actions.get(i); 6690 handler.postDelayed(handlerAction.action, handlerAction.delay); 6691 } 6692 6693 actions.clear(); 6694 } 6695 } 6696 6697 private static class HandlerAction { 6698 Runnable action; 6699 long delay; 6700 6701 @Override 6702 public boolean equals(Object o) { 6703 if (this == o) return true; 6704 if (o == null || getClass() != o.getClass()) return false; 6705 6706 HandlerAction that = (HandlerAction) o; 6707 return !(action != null ? !action.equals(that.action) : that.action != null); 6708 6709 } 6710 6711 @Override 6712 public int hashCode() { 6713 int result = action != null ? action.hashCode() : 0; 6714 result = 31 * result + (int) (delay ^ (delay >>> 32)); 6715 return result; 6716 } 6717 } 6718 } 6719 6720 /** 6721 * Class for managing the accessibility interaction connection 6722 * based on the global accessibility state. 6723 */ 6724 final class AccessibilityInteractionConnectionManager 6725 implements AccessibilityStateChangeListener { 6726 @Override 6727 public void onAccessibilityStateChanged(boolean enabled) { 6728 if (enabled) { 6729 ensureConnection(); 6730 if (mAttachInfo.mHasWindowFocus) { 6731 mView.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 6732 View focusedView = mView.findFocus(); 6733 if (focusedView != null && focusedView != mView) { 6734 focusedView.sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_FOCUSED); 6735 } 6736 } 6737 } else { 6738 ensureNoConnection(); 6739 mHandler.obtainMessage(MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST).sendToTarget(); 6740 } 6741 } 6742 6743 public void ensureConnection() { 6744 final boolean registered = 6745 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED_ITEM_ID; 6746 if (!registered) { 6747 mAttachInfo.mAccessibilityWindowId = 6748 mAccessibilityManager.addAccessibilityInteractionConnection(mWindow, 6749 new AccessibilityInteractionConnection(ViewRootImpl.this)); 6750 } 6751 } 6752 6753 public void ensureNoConnection() { 6754 final boolean registered = 6755 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED_ITEM_ID; 6756 if (registered) { 6757 mAttachInfo.mAccessibilityWindowId = AccessibilityNodeInfo.UNDEFINED_ITEM_ID; 6758 mAccessibilityManager.removeAccessibilityInteractionConnection(mWindow); 6759 } 6760 } 6761 } 6762 6763 final class HighContrastTextManager implements HighTextContrastChangeListener { 6764 HighContrastTextManager() { 6765 mAttachInfo.mHighContrastText = mAccessibilityManager.isHighTextContrastEnabled(); 6766 } 6767 @Override 6768 public void onHighTextContrastStateChanged(boolean enabled) { 6769 mAttachInfo.mHighContrastText = enabled; 6770 6771 // Destroy Displaylists so they can be recreated with high contrast recordings 6772 destroyHardwareResources(); 6773 6774 // Schedule redraw, which will rerecord + redraw all text 6775 invalidate(); 6776 } 6777 } 6778 6779 /** 6780 * This class is an interface this ViewAncestor provides to the 6781 * AccessibilityManagerService to the latter can interact with 6782 * the view hierarchy in this ViewAncestor. 6783 */ 6784 static final class AccessibilityInteractionConnection 6785 extends IAccessibilityInteractionConnection.Stub { 6786 private final WeakReference<ViewRootImpl> mViewRootImpl; 6787 6788 AccessibilityInteractionConnection(ViewRootImpl viewRootImpl) { 6789 mViewRootImpl = new WeakReference<ViewRootImpl>(viewRootImpl); 6790 } 6791 6792 @Override 6793 public void findAccessibilityNodeInfoByAccessibilityId(long accessibilityNodeId, 6794 Region interactiveRegion, int interactionId, 6795 IAccessibilityInteractionConnectionCallback callback, int flags, 6796 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6797 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6798 if (viewRootImpl != null && viewRootImpl.mView != null) { 6799 viewRootImpl.getAccessibilityInteractionController() 6800 .findAccessibilityNodeInfoByAccessibilityIdClientThread(accessibilityNodeId, 6801 interactiveRegion, interactionId, callback, flags, interrogatingPid, 6802 interrogatingTid, spec); 6803 } else { 6804 // We cannot make the call and notify the caller so it does not wait. 6805 try { 6806 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 6807 } catch (RemoteException re) { 6808 /* best effort - ignore */ 6809 } 6810 } 6811 } 6812 6813 @Override 6814 public void performAccessibilityAction(long accessibilityNodeId, int action, 6815 Bundle arguments, int interactionId, 6816 IAccessibilityInteractionConnectionCallback callback, int flags, 6817 int interrogatingPid, long interrogatingTid) { 6818 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6819 if (viewRootImpl != null && viewRootImpl.mView != null) { 6820 viewRootImpl.getAccessibilityInteractionController() 6821 .performAccessibilityActionClientThread(accessibilityNodeId, action, arguments, 6822 interactionId, callback, flags, interrogatingPid, interrogatingTid); 6823 } else { 6824 // We cannot make the call and notify the caller so it does not wait. 6825 try { 6826 callback.setPerformAccessibilityActionResult(false, interactionId); 6827 } catch (RemoteException re) { 6828 /* best effort - ignore */ 6829 } 6830 } 6831 } 6832 6833 @Override 6834 public void computeClickPointInScreen(long accessibilityNodeId, Region interactiveRegion, 6835 int interactionId, IAccessibilityInteractionConnectionCallback callback, 6836 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6837 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6838 if (viewRootImpl != null && viewRootImpl.mView != null) { 6839 viewRootImpl.getAccessibilityInteractionController() 6840 .computeClickPointInScreenClientThread(accessibilityNodeId, 6841 interactiveRegion, interactionId, callback, interrogatingPid, 6842 interrogatingTid, spec); 6843 } else { 6844 // We cannot make the call and notify the caller so it does not wait. 6845 try { 6846 callback.setComputeClickPointInScreenActionResult(null, interactionId); 6847 } catch (RemoteException re) { 6848 /* best effort - ignore */ 6849 } 6850 } 6851 } 6852 6853 @Override 6854 public void findAccessibilityNodeInfosByViewId(long accessibilityNodeId, 6855 String viewId, Region interactiveRegion, int interactionId, 6856 IAccessibilityInteractionConnectionCallback callback, int flags, 6857 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6858 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6859 if (viewRootImpl != null && viewRootImpl.mView != null) { 6860 viewRootImpl.getAccessibilityInteractionController() 6861 .findAccessibilityNodeInfosByViewIdClientThread(accessibilityNodeId, 6862 viewId, interactiveRegion, interactionId, callback, flags, 6863 interrogatingPid, interrogatingTid, spec); 6864 } else { 6865 // We cannot make the call and notify the caller so it does not wait. 6866 try { 6867 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6868 } catch (RemoteException re) { 6869 /* best effort - ignore */ 6870 } 6871 } 6872 } 6873 6874 @Override 6875 public void findAccessibilityNodeInfosByText(long accessibilityNodeId, String text, 6876 Region interactiveRegion, int interactionId, 6877 IAccessibilityInteractionConnectionCallback callback, int flags, 6878 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6879 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6880 if (viewRootImpl != null && viewRootImpl.mView != null) { 6881 viewRootImpl.getAccessibilityInteractionController() 6882 .findAccessibilityNodeInfosByTextClientThread(accessibilityNodeId, text, 6883 interactiveRegion, interactionId, callback, flags, interrogatingPid, 6884 interrogatingTid, spec); 6885 } else { 6886 // We cannot make the call and notify the caller so it does not wait. 6887 try { 6888 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 6889 } catch (RemoteException re) { 6890 /* best effort - ignore */ 6891 } 6892 } 6893 } 6894 6895 @Override 6896 public void findFocus(long accessibilityNodeId, int focusType, Region interactiveRegion, 6897 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 6898 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6899 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6900 if (viewRootImpl != null && viewRootImpl.mView != null) { 6901 viewRootImpl.getAccessibilityInteractionController() 6902 .findFocusClientThread(accessibilityNodeId, focusType, interactiveRegion, 6903 interactionId, callback, flags, interrogatingPid, interrogatingTid, 6904 spec); 6905 } else { 6906 // We cannot make the call and notify the caller so it does not wait. 6907 try { 6908 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6909 } catch (RemoteException re) { 6910 /* best effort - ignore */ 6911 } 6912 } 6913 } 6914 6915 @Override 6916 public void focusSearch(long accessibilityNodeId, int direction, Region interactiveRegion, 6917 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 6918 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6919 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6920 if (viewRootImpl != null && viewRootImpl.mView != null) { 6921 viewRootImpl.getAccessibilityInteractionController() 6922 .focusSearchClientThread(accessibilityNodeId, direction, interactiveRegion, 6923 interactionId, callback, flags, interrogatingPid, interrogatingTid, 6924 spec); 6925 } else { 6926 // We cannot make the call and notify the caller so it does not wait. 6927 try { 6928 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6929 } catch (RemoteException re) { 6930 /* best effort - ignore */ 6931 } 6932 } 6933 } 6934 } 6935 6936 private class SendWindowContentChangedAccessibilityEvent implements Runnable { 6937 private int mChangeTypes = 0; 6938 6939 public View mSource; 6940 public long mLastEventTimeMillis; 6941 6942 @Override 6943 public void run() { 6944 // The accessibility may be turned off while we were waiting so check again. 6945 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 6946 mLastEventTimeMillis = SystemClock.uptimeMillis(); 6947 AccessibilityEvent event = AccessibilityEvent.obtain(); 6948 event.setEventType(AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED); 6949 event.setContentChangeTypes(mChangeTypes); 6950 mSource.sendAccessibilityEventUnchecked(event); 6951 } else { 6952 mLastEventTimeMillis = 0; 6953 } 6954 // In any case reset to initial state. 6955 mSource.resetSubtreeAccessibilityStateChanged(); 6956 mSource = null; 6957 mChangeTypes = 0; 6958 } 6959 6960 public void runOrPost(View source, int changeType) { 6961 if (mSource != null) { 6962 // If there is no common predecessor, then mSource points to 6963 // a removed view, hence in this case always prefer the source. 6964 View predecessor = getCommonPredecessor(mSource, source); 6965 mSource = (predecessor != null) ? predecessor : source; 6966 mChangeTypes |= changeType; 6967 return; 6968 } 6969 mSource = source; 6970 mChangeTypes = changeType; 6971 final long timeSinceLastMillis = SystemClock.uptimeMillis() - mLastEventTimeMillis; 6972 final long minEventIntevalMillis = 6973 ViewConfiguration.getSendRecurringAccessibilityEventsInterval(); 6974 if (timeSinceLastMillis >= minEventIntevalMillis) { 6975 mSource.removeCallbacks(this); 6976 run(); 6977 } else { 6978 mSource.postDelayed(this, minEventIntevalMillis - timeSinceLastMillis); 6979 } 6980 } 6981 } 6982} 6983