ViewRootImpl.java revision 9970aee6e8858f2f9efe329aa0ab68b56ed1659e
1/* 2 * Copyright (C) 2006 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.view; 18 19import android.Manifest; 20import android.animation.LayoutTransition; 21import android.app.ActivityManagerNative; 22import android.content.ClipDescription; 23import android.content.ComponentCallbacks; 24import android.content.ComponentCallbacks2; 25import android.content.Context; 26import android.content.pm.PackageManager; 27import android.content.res.CompatibilityInfo; 28import android.content.res.Configuration; 29import android.content.res.Resources; 30import android.graphics.Canvas; 31import android.graphics.Matrix; 32import android.graphics.Paint; 33import android.graphics.PixelFormat; 34import android.graphics.Point; 35import android.graphics.PointF; 36import android.graphics.PorterDuff; 37import android.graphics.Rect; 38import android.graphics.Region; 39import android.graphics.drawable.Drawable; 40import android.hardware.display.DisplayManager; 41import android.hardware.display.DisplayManager.DisplayListener; 42import android.media.AudioManager; 43import android.os.Binder; 44import android.os.Build; 45import android.os.Bundle; 46import android.os.Debug; 47import android.os.Handler; 48import android.os.Looper; 49import android.os.Message; 50import android.os.ParcelFileDescriptor; 51import android.os.Process; 52import android.os.RemoteException; 53import android.os.SystemClock; 54import android.os.SystemProperties; 55import android.os.Trace; 56import android.util.AndroidRuntimeException; 57import android.util.DisplayMetrics; 58import android.util.Log; 59import android.util.Slog; 60import android.util.TypedValue; 61import android.view.Surface.OutOfResourcesException; 62import android.view.View.AttachInfo; 63import android.view.View.MeasureSpec; 64import android.view.accessibility.AccessibilityEvent; 65import android.view.accessibility.AccessibilityManager; 66import android.view.accessibility.AccessibilityManager.AccessibilityStateChangeListener; 67import android.view.accessibility.AccessibilityNodeInfo; 68import android.view.accessibility.AccessibilityNodeProvider; 69import android.view.accessibility.IAccessibilityInteractionConnection; 70import android.view.accessibility.IAccessibilityInteractionConnectionCallback; 71import android.view.animation.AccelerateDecelerateInterpolator; 72import android.view.animation.Interpolator; 73import android.view.inputmethod.InputConnection; 74import android.view.inputmethod.InputMethodManager; 75import android.widget.Scroller; 76 77import com.android.internal.R; 78import com.android.internal.os.SomeArgs; 79import com.android.internal.policy.PolicyManager; 80import com.android.internal.view.BaseSurfaceHolder; 81import com.android.internal.view.RootViewSurfaceTaker; 82 83import java.io.FileDescriptor; 84import java.io.IOException; 85import java.io.OutputStream; 86import java.io.PrintWriter; 87import java.lang.ref.WeakReference; 88import java.util.ArrayList; 89import java.util.HashSet; 90 91/** 92 * The top of a view hierarchy, implementing the needed protocol between View 93 * and the WindowManager. This is for the most part an internal implementation 94 * detail of {@link WindowManagerGlobal}. 95 * 96 * {@hide} 97 */ 98@SuppressWarnings({"EmptyCatchBlock", "PointlessBooleanExpression"}) 99public final class ViewRootImpl implements ViewParent, 100 View.AttachInfo.Callbacks, HardwareRenderer.HardwareDrawCallbacks { 101 private static final String TAG = "ViewRootImpl"; 102 private static final boolean DBG = false; 103 private static final boolean LOCAL_LOGV = false; 104 /** @noinspection PointlessBooleanExpression*/ 105 private static final boolean DEBUG_DRAW = false || LOCAL_LOGV; 106 private static final boolean DEBUG_LAYOUT = false || LOCAL_LOGV; 107 private static final boolean DEBUG_DIALOG = false || LOCAL_LOGV; 108 private static final boolean DEBUG_INPUT_RESIZE = false || LOCAL_LOGV; 109 private static final boolean DEBUG_ORIENTATION = false || LOCAL_LOGV; 110 private static final boolean DEBUG_TRACKBALL = false || LOCAL_LOGV; 111 private static final boolean DEBUG_IMF = false || LOCAL_LOGV; 112 private static final boolean DEBUG_CONFIGURATION = false || LOCAL_LOGV; 113 private static final boolean DEBUG_FPS = false; 114 private static final boolean DEBUG_INPUT_STAGES = false || LOCAL_LOGV; 115 116 /** 117 * Set this system property to true to force the view hierarchy to render 118 * at 60 Hz. This can be used to measure the potential framerate. 119 */ 120 private static final String PROPERTY_PROFILE_RENDERING = "viewroot.profile_rendering"; 121 private static final String PROPERTY_MEDIA_DISABLED = "config.disable_media"; 122 123 // property used by emulator to determine display shape 124 private 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 mFitSystemWindowsRequested; 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 private 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 mPendingContentInsets = new Rect(); 261 final ViewTreeObserver.InternalInsetsInfo mLastGivenInsets 262 = new ViewTreeObserver.InternalInsetsInfo(); 263 264 final Rect mFitSystemWindowsInsets = new Rect(); 265 266 final Configuration mLastConfiguration = new Configuration(); 267 final Configuration mPendingConfiguration = new Configuration(); 268 269 boolean mScrollMayChange; 270 int mSoftInputMode; 271 WeakReference<View> mLastScrolledFocus; 272 int mScrollY; 273 int mCurScrollY; 274 Scroller mScroller; 275 HardwareLayer mResizeBuffer; 276 long mResizeBufferStartTime; 277 int mResizeBufferDuration; 278 // Used to block the creation of the ResizeBuffer due to invalidations in 279 // the previous DisplayList tree that must prevent re-execution. 280 // Currently this means a functor was detached. 281 boolean mBlockResizeBuffer; 282 static final Interpolator mResizeInterpolator = new AccelerateDecelerateInterpolator(); 283 private ArrayList<LayoutTransition> mPendingTransitions; 284 285 final ViewConfiguration mViewConfiguration; 286 287 /* Drag/drop */ 288 ClipDescription mDragDescription; 289 View mCurrentDragView; 290 volatile Object mLocalDragState; 291 final PointF mDragPoint = new PointF(); 292 final PointF mLastTouchPoint = new PointF(); 293 294 private boolean mProfileRendering; 295 private Choreographer.FrameCallback mRenderProfiler; 296 private boolean mRenderProfilingEnabled; 297 298 private boolean mMediaDisabled; 299 300 // Variables to track frames per second, enabled via DEBUG_FPS flag 301 private long mFpsStartTime = -1; 302 private long mFpsPrevTime = -1; 303 private int mFpsNumFrames; 304 305 /** 306 * see {@link #playSoundEffect(int)} 307 */ 308 AudioManager mAudioManager; 309 310 final AccessibilityManager mAccessibilityManager; 311 312 AccessibilityInteractionController mAccessibilityInteractionController; 313 314 AccessibilityInteractionConnectionManager mAccessibilityInteractionConnectionManager; 315 316 SendWindowContentChangedAccessibilityEvent mSendWindowContentChangedAccessibilityEvent; 317 318 HashSet<View> mTempHashSet; 319 320 private final int mDensity; 321 private final int mNoncompatDensity; 322 323 private boolean mInLayout = false; 324 ArrayList<View> mLayoutRequesters = new ArrayList<View>(); 325 boolean mHandlingLayoutInLayoutRequest = false; 326 327 private int mViewLayoutDirectionInitial; 328 329 /** Set to true once doDie() has been called. */ 330 private boolean mRemoved; 331 332 private boolean mIsEmulator; 333 334 /** 335 * Consistency verifier for debugging purposes. 336 */ 337 protected final InputEventConsistencyVerifier mInputEventConsistencyVerifier = 338 InputEventConsistencyVerifier.isInstrumentationEnabled() ? 339 new InputEventConsistencyVerifier(this, 0) : null; 340 341 static final class SystemUiVisibilityInfo { 342 int seq; 343 int globalVisibility; 344 int localValue; 345 int localChanges; 346 } 347 348 public ViewRootImpl(Context context, Display display) { 349 mContext = context; 350 mWindowSession = WindowManagerGlobal.getWindowSession(); 351 mDisplay = display; 352 mBasePackageName = context.getBasePackageName(); 353 354 mDisplayAdjustments = display.getDisplayAdjustments(); 355 356 mThread = Thread.currentThread(); 357 mLocation = new WindowLeaked(null); 358 mLocation.fillInStackTrace(); 359 mWidth = -1; 360 mHeight = -1; 361 mDirty = new Rect(); 362 mTempRect = new Rect(); 363 mVisRect = new Rect(); 364 mWinFrame = new Rect(); 365 mWindow = new W(this); 366 mTargetSdkVersion = context.getApplicationInfo().targetSdkVersion; 367 mViewVisibility = View.GONE; 368 mTransparentRegion = new Region(); 369 mPreviousTransparentRegion = new Region(); 370 mFirst = true; // true for the first time the view is added 371 mAdded = false; 372 mAccessibilityManager = AccessibilityManager.getInstance(context); 373 mAccessibilityInteractionConnectionManager = 374 new AccessibilityInteractionConnectionManager(); 375 mAccessibilityManager.addAccessibilityStateChangeListener( 376 mAccessibilityInteractionConnectionManager); 377 mAttachInfo = new View.AttachInfo(mWindowSession, mWindow, display, this, mHandler, this); 378 mViewConfiguration = ViewConfiguration.get(context); 379 mDensity = context.getResources().getDisplayMetrics().densityDpi; 380 mNoncompatDensity = context.getResources().getDisplayMetrics().noncompatDensityDpi; 381 mFallbackEventHandler = PolicyManager.makeNewFallbackEventHandler(context); 382 mChoreographer = Choreographer.getInstance(); 383 mDisplayManager = (DisplayManager)context.getSystemService(Context.DISPLAY_SERVICE); 384 loadSystemProperties(); 385 } 386 387 public static void addFirstDrawHandler(Runnable callback) { 388 synchronized (sFirstDrawHandlers) { 389 if (!sFirstDrawComplete) { 390 sFirstDrawHandlers.add(callback); 391 } 392 } 393 } 394 395 public static void addConfigCallback(ComponentCallbacks callback) { 396 synchronized (sConfigCallbacks) { 397 sConfigCallbacks.add(callback); 398 } 399 } 400 401 // FIXME for perf testing only 402 private boolean mProfile = false; 403 404 /** 405 * Call this to profile the next traversal call. 406 * FIXME for perf testing only. Remove eventually 407 */ 408 public void profile() { 409 mProfile = true; 410 } 411 412 /** 413 * Indicates whether we are in touch mode. Calling this method triggers an IPC 414 * call and should be avoided whenever possible. 415 * 416 * @return True, if the device is in touch mode, false otherwise. 417 * 418 * @hide 419 */ 420 static boolean isInTouchMode() { 421 IWindowSession windowSession = WindowManagerGlobal.peekWindowSession(); 422 if (windowSession != null) { 423 try { 424 return windowSession.getInTouchMode(); 425 } catch (RemoteException e) { 426 } 427 } 428 return false; 429 } 430 431 /** 432 * We have one child 433 */ 434 public void setView(View view, WindowManager.LayoutParams attrs, View panelParentView) { 435 synchronized (this) { 436 if (mView == null) { 437 mView = view; 438 439 mAttachInfo.mDisplayState = mDisplay.getState(); 440 mDisplayManager.registerDisplayListener(mDisplayListener, mHandler); 441 442 mViewLayoutDirectionInitial = mView.getRawLayoutDirection(); 443 mFallbackEventHandler.setView(view); 444 mWindowAttributes.copyFrom(attrs); 445 if (mWindowAttributes.packageName == null) { 446 mWindowAttributes.packageName = mBasePackageName; 447 } 448 attrs = mWindowAttributes; 449 // Keep track of the actual window flags supplied by the client. 450 mClientWindowLayoutFlags = attrs.flags; 451 452 setAccessibilityFocus(null, null); 453 454 if (view instanceof RootViewSurfaceTaker) { 455 mSurfaceHolderCallback = 456 ((RootViewSurfaceTaker)view).willYouTakeTheSurface(); 457 if (mSurfaceHolderCallback != null) { 458 mSurfaceHolder = new TakenSurfaceHolder(); 459 mSurfaceHolder.setFormat(PixelFormat.UNKNOWN); 460 } 461 } 462 463 CompatibilityInfo compatibilityInfo = mDisplayAdjustments.getCompatibilityInfo(); 464 mTranslator = compatibilityInfo.getTranslator(); 465 mDisplayAdjustments.setActivityToken(attrs.token); 466 467 // If the application owns the surface, don't enable hardware acceleration 468 if (mSurfaceHolder == null) { 469 enableHardwareAcceleration(attrs); 470 } 471 472 boolean restore = false; 473 if (mTranslator != null) { 474 mSurface.setCompatibilityTranslator(mTranslator); 475 restore = true; 476 attrs.backup(); 477 mTranslator.translateWindowLayout(attrs); 478 } 479 if (DEBUG_LAYOUT) Log.d(TAG, "WindowLayout in setView:" + attrs); 480 481 if (!compatibilityInfo.supportsScreen()) { 482 attrs.privateFlags |= WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 483 mLastInCompatMode = true; 484 } 485 486 mSoftInputMode = attrs.softInputMode; 487 mWindowAttributesChanged = true; 488 mWindowAttributesChangesFlag = WindowManager.LayoutParams.EVERYTHING_CHANGED; 489 mAttachInfo.mRootView = view; 490 mAttachInfo.mScalingRequired = mTranslator != null; 491 mAttachInfo.mApplicationScale = 492 mTranslator == null ? 1.0f : mTranslator.applicationScale; 493 if (panelParentView != null) { 494 mAttachInfo.mPanelParentWindowToken 495 = panelParentView.getApplicationWindowToken(); 496 } 497 mAdded = true; 498 int res; /* = WindowManagerImpl.ADD_OKAY; */ 499 500 // Schedule the first layout -before- adding to the window 501 // manager, to make sure we do the relayout before receiving 502 // any other events from the system. 503 requestLayout(); 504 if ((mWindowAttributes.inputFeatures 505 & WindowManager.LayoutParams.INPUT_FEATURE_NO_INPUT_CHANNEL) == 0) { 506 mInputChannel = new InputChannel(); 507 } 508 try { 509 mOrigWindowType = mWindowAttributes.type; 510 mAttachInfo.mRecomputeGlobalAttributes = true; 511 collectViewAttributes(); 512 res = mWindowSession.addToDisplay(mWindow, mSeq, mWindowAttributes, 513 getHostVisibility(), mDisplay.getDisplayId(), 514 mAttachInfo.mContentInsets, mInputChannel); 515 } catch (RemoteException e) { 516 mAdded = false; 517 mView = null; 518 mAttachInfo.mRootView = null; 519 mInputChannel = null; 520 mFallbackEventHandler.setView(null); 521 unscheduleTraversals(); 522 setAccessibilityFocus(null, null); 523 throw new RuntimeException("Adding window failed", e); 524 } finally { 525 if (restore) { 526 attrs.restore(); 527 } 528 } 529 530 if (mTranslator != null) { 531 mTranslator.translateRectInScreenToAppWindow(mAttachInfo.mContentInsets); 532 } 533 mPendingOverscanInsets.set(0, 0, 0, 0); 534 mPendingContentInsets.set(mAttachInfo.mContentInsets); 535 mPendingVisibleInsets.set(0, 0, 0, 0); 536 if (DEBUG_LAYOUT) Log.v(TAG, "Added window " + mWindow); 537 if (res < WindowManagerGlobal.ADD_OKAY) { 538 mAttachInfo.mRootView = null; 539 mAdded = false; 540 mFallbackEventHandler.setView(null); 541 unscheduleTraversals(); 542 setAccessibilityFocus(null, null); 543 switch (res) { 544 case WindowManagerGlobal.ADD_BAD_APP_TOKEN: 545 case WindowManagerGlobal.ADD_BAD_SUBWINDOW_TOKEN: 546 throw new WindowManager.BadTokenException( 547 "Unable to add window -- token " + attrs.token 548 + " is not valid; is your activity running?"); 549 case WindowManagerGlobal.ADD_NOT_APP_TOKEN: 550 throw new WindowManager.BadTokenException( 551 "Unable to add window -- token " + attrs.token 552 + " is not for an application"); 553 case WindowManagerGlobal.ADD_APP_EXITING: 554 throw new WindowManager.BadTokenException( 555 "Unable to add window -- app for token " + attrs.token 556 + " is exiting"); 557 case WindowManagerGlobal.ADD_DUPLICATE_ADD: 558 throw new WindowManager.BadTokenException( 559 "Unable to add window -- window " + mWindow 560 + " has already been added"); 561 case WindowManagerGlobal.ADD_STARTING_NOT_NEEDED: 562 // Silently ignore -- we would have just removed it 563 // right away, anyway. 564 return; 565 case WindowManagerGlobal.ADD_MULTIPLE_SINGLETON: 566 throw new WindowManager.BadTokenException( 567 "Unable to add window " + mWindow + 568 " -- another window of this type already exists"); 569 case WindowManagerGlobal.ADD_PERMISSION_DENIED: 570 throw new WindowManager.BadTokenException( 571 "Unable to add window " + mWindow + 572 " -- permission denied for this window type"); 573 case WindowManagerGlobal.ADD_INVALID_DISPLAY: 574 throw new WindowManager.InvalidDisplayException( 575 "Unable to add window " + mWindow + 576 " -- the specified display can not be found"); 577 } 578 throw new RuntimeException( 579 "Unable to add window -- unknown error code " + res); 580 } 581 582 if (view instanceof RootViewSurfaceTaker) { 583 mInputQueueCallback = 584 ((RootViewSurfaceTaker)view).willYouTakeTheInputQueue(); 585 } 586 if (mInputChannel != null) { 587 if (mInputQueueCallback != null) { 588 mInputQueue = new InputQueue(); 589 mInputQueueCallback.onInputQueueCreated(mInputQueue); 590 } 591 mInputEventReceiver = new WindowInputEventReceiver(mInputChannel, 592 Looper.myLooper()); 593 } 594 595 view.assignParent(this); 596 mAddedTouchMode = (res & WindowManagerGlobal.ADD_FLAG_IN_TOUCH_MODE) != 0; 597 mAppVisible = (res & WindowManagerGlobal.ADD_FLAG_APP_VISIBLE) != 0; 598 599 if (mAccessibilityManager.isEnabled()) { 600 mAccessibilityInteractionConnectionManager.ensureConnection(); 601 } 602 603 if (view.getImportantForAccessibility() == View.IMPORTANT_FOR_ACCESSIBILITY_AUTO) { 604 view.setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_YES); 605 } 606 607 // Set up the input pipeline. 608 CharSequence counterSuffix = attrs.getTitle(); 609 mSyntheticInputStage = new SyntheticInputStage(); 610 InputStage viewPostImeStage = new ViewPostImeInputStage(mSyntheticInputStage); 611 InputStage nativePostImeStage = new NativePostImeInputStage(viewPostImeStage, 612 "aq:native-post-ime:" + counterSuffix); 613 InputStage earlyPostImeStage = new EarlyPostImeInputStage(nativePostImeStage); 614 InputStage imeStage = new ImeInputStage(earlyPostImeStage, 615 "aq:ime:" + counterSuffix); 616 InputStage viewPreImeStage = new ViewPreImeInputStage(imeStage); 617 InputStage nativePreImeStage = new NativePreImeInputStage(viewPreImeStage, 618 "aq:native-pre-ime:" + counterSuffix); 619 620 mFirstInputStage = nativePreImeStage; 621 mFirstPostImeInputStage = earlyPostImeStage; 622 mPendingInputEventQueueLengthCounterName = "aq:pending:" + counterSuffix; 623 } 624 } 625 } 626 627 /** Whether the window is in local focus mode or not */ 628 private boolean isInLocalFocusMode() { 629 return (mWindowAttributes.flags & WindowManager.LayoutParams.FLAG_LOCAL_FOCUS_MODE) != 0; 630 } 631 632 void destroyHardwareResources() { 633 if (mAttachInfo.mHardwareRenderer != null) { 634 mAttachInfo.mHardwareRenderer.destroyHardwareResources(mView); 635 mAttachInfo.mHardwareRenderer.destroy(false); 636 } 637 } 638 639 void destroyHardwareLayers() { 640 // TODO Implement 641 } 642 643 void flushHardwareLayerUpdates() { 644 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled()) { 645 mAttachInfo.mHardwareRenderer.flushLayerUpdates(); 646 } 647 } 648 649 void dispatchFlushHardwareLayerUpdates() { 650 mHandler.removeMessages(MSG_FLUSH_LAYER_UPDATES); 651 mHandler.sendMessageAtFrontOfQueue(mHandler.obtainMessage(MSG_FLUSH_LAYER_UPDATES)); 652 } 653 654 public void detachFunctor(long functor) { 655 // TODO: Make the resize buffer some other way to not need this block 656 mBlockResizeBuffer = true; 657 if (mAttachInfo.mHardwareRenderer != null) { 658 // Fence so that any pending invokeFunctor() messages will be processed 659 // before we return from detachFunctor. 660 mAttachInfo.mHardwareRenderer.fence(); 661 } 662 } 663 664 /** 665 * Schedules the functor for execution in either kModeProcess or 666 * kModeProcessNoContext, depending on whether or not there is an EGLContext. 667 * 668 * @param functor The native functor to invoke 669 * @param waitForCompletion If true, this will not return until the functor 670 * has invoked. If false, the functor may be invoked 671 * asynchronously. 672 */ 673 public void invokeFunctor(long functor, boolean waitForCompletion) { 674 ThreadedRenderer.invokeFunctor(functor, waitForCompletion); 675 } 676 677 private void enableHardwareAcceleration(WindowManager.LayoutParams attrs) { 678 mAttachInfo.mHardwareAccelerated = false; 679 mAttachInfo.mHardwareAccelerationRequested = false; 680 681 // Don't enable hardware acceleration when the application is in compatibility mode 682 if (mTranslator != null) return; 683 684 // Try to enable hardware acceleration if requested 685 final boolean hardwareAccelerated = 686 (attrs.flags & WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED) != 0; 687 688 if (hardwareAccelerated) { 689 if (!HardwareRenderer.isAvailable()) { 690 return; 691 } 692 693 // Persistent processes (including the system) should not do 694 // accelerated rendering on low-end devices. In that case, 695 // sRendererDisabled will be set. In addition, the system process 696 // itself should never do accelerated rendering. In that case, both 697 // sRendererDisabled and sSystemRendererDisabled are set. When 698 // sSystemRendererDisabled is set, PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED 699 // can be used by code on the system process to escape that and enable 700 // HW accelerated drawing. (This is basically for the lock screen.) 701 702 final boolean fakeHwAccelerated = (attrs.privateFlags & 703 WindowManager.LayoutParams.PRIVATE_FLAG_FAKE_HARDWARE_ACCELERATED) != 0; 704 final boolean forceHwAccelerated = (attrs.privateFlags & 705 WindowManager.LayoutParams.PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED) != 0; 706 707 if (!HardwareRenderer.sRendererDisabled || (HardwareRenderer.sSystemRendererDisabled 708 && forceHwAccelerated)) { 709 if (mAttachInfo.mHardwareRenderer != null) { 710 mAttachInfo.mHardwareRenderer.destroy(true); 711 } 712 713 final boolean translucent = attrs.format != PixelFormat.OPAQUE; 714 mAttachInfo.mHardwareRenderer = HardwareRenderer.create(mContext, translucent); 715 if (mAttachInfo.mHardwareRenderer != null) { 716 mAttachInfo.mHardwareRenderer.setName(attrs.getTitle().toString()); 717 mAttachInfo.mHardwareAccelerated = 718 mAttachInfo.mHardwareAccelerationRequested = true; 719 } 720 } else if (fakeHwAccelerated) { 721 // The window had wanted to use hardware acceleration, but this 722 // is not allowed in its process. By setting this flag, it can 723 // still render as if it was accelerated. This is basically for 724 // the preview windows the window manager shows for launching 725 // applications, so they will look more like the app being launched. 726 mAttachInfo.mHardwareAccelerationRequested = true; 727 } 728 } 729 } 730 731 public View getView() { 732 return mView; 733 } 734 735 final WindowLeaked getLocation() { 736 return mLocation; 737 } 738 739 void setLayoutParams(WindowManager.LayoutParams attrs, boolean newView) { 740 synchronized (this) { 741 int oldSoftInputMode = mWindowAttributes.softInputMode; 742 // Keep track of the actual window flags supplied by the client. 743 mClientWindowLayoutFlags = attrs.flags; 744 // preserve compatible window flag if exists. 745 int compatibleWindowFlag = mWindowAttributes.privateFlags 746 & WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 747 // transfer over system UI visibility values as they carry current state. 748 attrs.systemUiVisibility = mWindowAttributes.systemUiVisibility; 749 attrs.subtreeSystemUiVisibility = mWindowAttributes.subtreeSystemUiVisibility; 750 mWindowAttributesChangesFlag = mWindowAttributes.copyFrom(attrs); 751 if ((mWindowAttributesChangesFlag 752 & WindowManager.LayoutParams.TRANSLUCENT_FLAGS_CHANGED) != 0) { 753 // Recompute system ui visibility. 754 mAttachInfo.mRecomputeGlobalAttributes = true; 755 } 756 if (mWindowAttributes.packageName == null) { 757 mWindowAttributes.packageName = mBasePackageName; 758 } 759 mWindowAttributes.privateFlags |= compatibleWindowFlag; 760 761 applyKeepScreenOnFlag(mWindowAttributes); 762 763 if (newView) { 764 mSoftInputMode = attrs.softInputMode; 765 requestLayout(); 766 } 767 // Don't lose the mode we last auto-computed. 768 if ((attrs.softInputMode&WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 769 == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 770 mWindowAttributes.softInputMode = (mWindowAttributes.softInputMode 771 & ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 772 | (oldSoftInputMode 773 & WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST); 774 } 775 mWindowAttributesChanged = true; 776 scheduleTraversals(); 777 } 778 } 779 780 void handleAppVisibility(boolean visible) { 781 if (mAppVisible != visible) { 782 mAppVisible = visible; 783 scheduleTraversals(); 784 } 785 } 786 787 void handleGetNewSurface() { 788 mNewSurfaceNeeded = true; 789 mFullRedrawNeeded = true; 790 scheduleTraversals(); 791 } 792 793 private final DisplayListener mDisplayListener = new DisplayListener() { 794 @Override 795 public void onDisplayChanged(int displayId) { 796 if (mView != null && mDisplay.getDisplayId() == displayId) { 797 final int oldDisplayState = mAttachInfo.mDisplayState; 798 final int newDisplayState = mDisplay.getState(); 799 if (oldDisplayState != newDisplayState) { 800 mAttachInfo.mDisplayState = newDisplayState; 801 if (oldDisplayState != Display.STATE_UNKNOWN) { 802 final int oldScreenState = toViewScreenState(oldDisplayState); 803 final int newScreenState = toViewScreenState(newDisplayState); 804 if (oldScreenState != newScreenState) { 805 mView.dispatchScreenStateChanged(newScreenState); 806 } 807 if (oldDisplayState == Display.STATE_OFF) { 808 // Draw was suppressed so we need to for it to happen here. 809 mFullRedrawNeeded = true; 810 scheduleTraversals(); 811 } 812 } 813 } 814 } 815 } 816 817 @Override 818 public void onDisplayRemoved(int displayId) { 819 } 820 821 @Override 822 public void onDisplayAdded(int displayId) { 823 } 824 825 private int toViewScreenState(int displayState) { 826 return displayState == Display.STATE_OFF ? 827 View.SCREEN_STATE_OFF : View.SCREEN_STATE_ON; 828 } 829 }; 830 831 @Override 832 public void requestFitSystemWindows() { 833 checkThread(); 834 mFitSystemWindowsRequested = true; 835 scheduleTraversals(); 836 } 837 838 @Override 839 public void requestLayout() { 840 if (!mHandlingLayoutInLayoutRequest) { 841 checkThread(); 842 mLayoutRequested = true; 843 scheduleTraversals(); 844 } 845 } 846 847 @Override 848 public boolean isLayoutRequested() { 849 return mLayoutRequested; 850 } 851 852 void invalidate() { 853 mDirty.set(0, 0, mWidth, mHeight); 854 if (!mWillDrawSoon) { 855 scheduleTraversals(); 856 } 857 } 858 859 void invalidateWorld(View view) { 860 view.invalidate(); 861 if (view instanceof ViewGroup) { 862 ViewGroup parent = (ViewGroup) view; 863 for (int i = 0; i < parent.getChildCount(); i++) { 864 invalidateWorld(parent.getChildAt(i)); 865 } 866 } 867 } 868 869 @Override 870 public void invalidateChild(View child, Rect dirty) { 871 invalidateChildInParent(null, dirty); 872 } 873 874 @Override 875 public ViewParent invalidateChildInParent(int[] location, Rect dirty) { 876 checkThread(); 877 if (DEBUG_DRAW) Log.v(TAG, "Invalidate child: " + dirty); 878 879 if (dirty == null) { 880 invalidate(); 881 return null; 882 } else if (dirty.isEmpty() && !mIsAnimating) { 883 return null; 884 } 885 886 if (mCurScrollY != 0 || mTranslator != null) { 887 mTempRect.set(dirty); 888 dirty = mTempRect; 889 if (mCurScrollY != 0) { 890 dirty.offset(0, -mCurScrollY); 891 } 892 if (mTranslator != null) { 893 mTranslator.translateRectInAppWindowToScreen(dirty); 894 } 895 if (mAttachInfo.mScalingRequired) { 896 dirty.inset(-1, -1); 897 } 898 } 899 900 final Rect localDirty = mDirty; 901 if (!localDirty.isEmpty() && !localDirty.contains(dirty)) { 902 mAttachInfo.mSetIgnoreDirtyState = true; 903 mAttachInfo.mIgnoreDirtyState = true; 904 } 905 906 // Add the new dirty rect to the current one 907 localDirty.union(dirty.left, dirty.top, dirty.right, dirty.bottom); 908 // Intersect with the bounds of the window to skip 909 // updates that lie outside of the visible region 910 final float appScale = mAttachInfo.mApplicationScale; 911 final boolean intersected = localDirty.intersect(0, 0, 912 (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 913 if (!intersected) { 914 localDirty.setEmpty(); 915 } 916 if (!mWillDrawSoon && (intersected || mIsAnimating)) { 917 scheduleTraversals(); 918 } 919 920 return null; 921 } 922 923 void setStopped(boolean stopped) { 924 if (mStopped != stopped) { 925 mStopped = stopped; 926 if (!stopped) { 927 scheduleTraversals(); 928 } 929 } 930 } 931 932 @Override 933 public ViewParent getParent() { 934 return null; 935 } 936 937 @Override 938 public boolean getChildVisibleRect(View child, Rect r, android.graphics.Point offset) { 939 if (child != mView) { 940 throw new RuntimeException("child is not mine, honest!"); 941 } 942 // Note: don't apply scroll offset, because we want to know its 943 // visibility in the virtual canvas being given to the view hierarchy. 944 return r.intersect(0, 0, mWidth, mHeight); 945 } 946 947 @Override 948 public void bringChildToFront(View child) { 949 } 950 951 int getHostVisibility() { 952 return mAppVisible ? mView.getVisibility() : View.GONE; 953 } 954 955 void disposeResizeBuffer() { 956 if (mResizeBuffer != null) { 957 mResizeBuffer.destroy(); 958 mResizeBuffer = null; 959 } 960 } 961 962 /** 963 * Add LayoutTransition to the list of transitions to be started in the next traversal. 964 * This list will be cleared after the transitions on the list are start()'ed. These 965 * transitionsa re added by LayoutTransition itself when it sets up animations. The setup 966 * happens during the layout phase of traversal, which we want to complete before any of the 967 * animations are started (because those animations may side-effect properties that layout 968 * depends upon, like the bounding rectangles of the affected views). So we add the transition 969 * to the list and it is started just prior to starting the drawing phase of traversal. 970 * 971 * @param transition The LayoutTransition to be started on the next traversal. 972 * 973 * @hide 974 */ 975 public void requestTransitionStart(LayoutTransition transition) { 976 if (mPendingTransitions == null || !mPendingTransitions.contains(transition)) { 977 if (mPendingTransitions == null) { 978 mPendingTransitions = new ArrayList<LayoutTransition>(); 979 } 980 mPendingTransitions.add(transition); 981 } 982 } 983 984 /** 985 * Notifies the HardwareRenderer that a new frame will be coming soon. 986 * Currently only {@link ThreadedRenderer} cares about this, and uses 987 * this knowledge to adjust the scheduling of off-thread animations 988 */ 989 void notifyRendererOfFramePending() { 990 if (mAttachInfo.mHardwareRenderer != null) { 991 mAttachInfo.mHardwareRenderer.notifyFramePending(); 992 } 993 } 994 995 void scheduleTraversals() { 996 if (!mTraversalScheduled) { 997 mTraversalScheduled = true; 998 mTraversalBarrier = mHandler.getLooper().postSyncBarrier(); 999 mChoreographer.postCallback( 1000 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 1001 if (!mUnbufferedInputDispatch) { 1002 scheduleConsumeBatchedInput(); 1003 } 1004 notifyRendererOfFramePending(); 1005 } 1006 } 1007 1008 void unscheduleTraversals() { 1009 if (mTraversalScheduled) { 1010 mTraversalScheduled = false; 1011 mHandler.getLooper().removeSyncBarrier(mTraversalBarrier); 1012 mChoreographer.removeCallbacks( 1013 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 1014 } 1015 } 1016 1017 void doTraversal() { 1018 if (mTraversalScheduled) { 1019 mTraversalScheduled = false; 1020 mHandler.getLooper().removeSyncBarrier(mTraversalBarrier); 1021 1022 if (mProfile) { 1023 Debug.startMethodTracing("ViewAncestor"); 1024 } 1025 1026 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "performTraversals"); 1027 try { 1028 performTraversals(); 1029 } finally { 1030 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 1031 } 1032 1033 if (mProfile) { 1034 Debug.stopMethodTracing(); 1035 mProfile = false; 1036 } 1037 } 1038 } 1039 1040 private void applyKeepScreenOnFlag(WindowManager.LayoutParams params) { 1041 // Update window's global keep screen on flag: if a view has requested 1042 // that the screen be kept on, then it is always set; otherwise, it is 1043 // set to whatever the client last requested for the global state. 1044 if (mAttachInfo.mKeepScreenOn) { 1045 params.flags |= WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON; 1046 } else { 1047 params.flags = (params.flags&~WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON) 1048 | (mClientWindowLayoutFlags&WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 1049 } 1050 } 1051 1052 private boolean collectViewAttributes() { 1053 final View.AttachInfo attachInfo = mAttachInfo; 1054 if (attachInfo.mRecomputeGlobalAttributes) { 1055 //Log.i(TAG, "Computing view hierarchy attributes!"); 1056 attachInfo.mRecomputeGlobalAttributes = false; 1057 boolean oldScreenOn = attachInfo.mKeepScreenOn; 1058 attachInfo.mKeepScreenOn = false; 1059 attachInfo.mSystemUiVisibility = 0; 1060 attachInfo.mHasSystemUiListeners = false; 1061 mView.dispatchCollectViewAttributes(attachInfo, 0); 1062 attachInfo.mSystemUiVisibility &= ~attachInfo.mDisabledSystemUiVisibility; 1063 WindowManager.LayoutParams params = mWindowAttributes; 1064 attachInfo.mSystemUiVisibility |= getImpliedSystemUiVisibility(params); 1065 if (attachInfo.mKeepScreenOn != oldScreenOn 1066 || attachInfo.mSystemUiVisibility != params.subtreeSystemUiVisibility 1067 || attachInfo.mHasSystemUiListeners != params.hasSystemUiListeners) { 1068 applyKeepScreenOnFlag(params); 1069 params.subtreeSystemUiVisibility = attachInfo.mSystemUiVisibility; 1070 params.hasSystemUiListeners = attachInfo.mHasSystemUiListeners; 1071 mView.dispatchWindowSystemUiVisiblityChanged(attachInfo.mSystemUiVisibility); 1072 return true; 1073 } 1074 } 1075 return false; 1076 } 1077 1078 private int getImpliedSystemUiVisibility(WindowManager.LayoutParams params) { 1079 int vis = 0; 1080 // Translucent decor window flags imply stable system ui visibility. 1081 if ((params.flags & WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS) != 0) { 1082 vis |= View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN; 1083 } 1084 if ((params.flags & WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION) != 0) { 1085 vis |= View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION; 1086 } 1087 return vis; 1088 } 1089 1090 private boolean measureHierarchy(final View host, final WindowManager.LayoutParams lp, 1091 final Resources res, final int desiredWindowWidth, final int desiredWindowHeight) { 1092 int childWidthMeasureSpec; 1093 int childHeightMeasureSpec; 1094 boolean windowSizeMayChange = false; 1095 1096 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) Log.v(TAG, 1097 "Measuring " + host + " in display " + desiredWindowWidth 1098 + "x" + desiredWindowHeight + "..."); 1099 1100 boolean goodMeasure = false; 1101 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT) { 1102 // On large screens, we don't want to allow dialogs to just 1103 // stretch to fill the entire width of the screen to display 1104 // one line of text. First try doing the layout at a smaller 1105 // size to see if it will fit. 1106 final DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1107 res.getValue(com.android.internal.R.dimen.config_prefDialogWidth, mTmpValue, true); 1108 int baseSize = 0; 1109 if (mTmpValue.type == TypedValue.TYPE_DIMENSION) { 1110 baseSize = (int)mTmpValue.getDimension(packageMetrics); 1111 } 1112 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": baseSize=" + baseSize); 1113 if (baseSize != 0 && desiredWindowWidth > baseSize) { 1114 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1115 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1116 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1117 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": measured (" 1118 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1119 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1120 goodMeasure = true; 1121 } else { 1122 // Didn't fit in that size... try expanding a bit. 1123 baseSize = (baseSize+desiredWindowWidth)/2; 1124 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": next baseSize=" 1125 + baseSize); 1126 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1127 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1128 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": measured (" 1129 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1130 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1131 if (DEBUG_DIALOG) Log.v(TAG, "Good!"); 1132 goodMeasure = true; 1133 } 1134 } 1135 } 1136 } 1137 1138 if (!goodMeasure) { 1139 childWidthMeasureSpec = getRootMeasureSpec(desiredWindowWidth, lp.width); 1140 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1141 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1142 if (mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) { 1143 windowSizeMayChange = true; 1144 } 1145 } 1146 1147 if (DBG) { 1148 System.out.println("======================================"); 1149 System.out.println("performTraversals -- after measure"); 1150 host.debug(); 1151 } 1152 1153 return windowSizeMayChange; 1154 } 1155 1156 /** 1157 * Modifies the input matrix such that it maps view-local coordinates to 1158 * on-screen coordinates. 1159 * 1160 * @param m input matrix to modify 1161 */ 1162 void transformMatrixToGlobal(Matrix m) { 1163 final View.AttachInfo attachInfo = mAttachInfo; 1164 m.postTranslate(attachInfo.mWindowLeft, attachInfo.mWindowTop); 1165 } 1166 1167 /** 1168 * Modifies the input matrix such that it maps on-screen coordinates to 1169 * view-local coordinates. 1170 * 1171 * @param m input matrix to modify 1172 */ 1173 void transformMatrixToLocal(Matrix m) { 1174 final View.AttachInfo attachInfo = mAttachInfo; 1175 m.preTranslate(-attachInfo.mWindowLeft, -attachInfo.mWindowTop); 1176 } 1177 1178 void dispatchApplyInsets(View host) { 1179 mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets); 1180 boolean isRound = false; 1181 if ((mWindowAttributes.flags & WindowManager.LayoutParams.FLAG_LAYOUT_IN_OVERSCAN) != 0 1182 && mDisplay.getDisplayId() == 0) { 1183 // we're fullscreen and not hosted in an ActivityView 1184 isRound = (mIsEmulator && SystemProperties.getBoolean(PROPERTY_EMULATOR_CIRCULAR, false)) 1185 || mContext.getResources().getBoolean( 1186 com.android.internal.R.bool.config_windowIsRound); 1187 } 1188 host.dispatchApplyWindowInsets(new WindowInsets( 1189 mFitSystemWindowsInsets, isRound)); 1190 } 1191 1192 private void performTraversals() { 1193 // cache mView since it is used so much below... 1194 final View host = mView; 1195 1196 if (DBG) { 1197 System.out.println("======================================"); 1198 System.out.println("performTraversals"); 1199 host.debug(); 1200 } 1201 1202 if (host == null || !mAdded) 1203 return; 1204 1205 mIsInTraversal = true; 1206 mWillDrawSoon = true; 1207 boolean windowSizeMayChange = false; 1208 boolean newSurface = false; 1209 boolean surfaceChanged = false; 1210 WindowManager.LayoutParams lp = mWindowAttributes; 1211 1212 int desiredWindowWidth; 1213 int desiredWindowHeight; 1214 1215 final View.AttachInfo attachInfo = mAttachInfo; 1216 1217 final int viewVisibility = getHostVisibility(); 1218 boolean viewVisibilityChanged = mViewVisibility != viewVisibility 1219 || mNewSurfaceNeeded; 1220 1221 WindowManager.LayoutParams params = null; 1222 if (mWindowAttributesChanged) { 1223 mWindowAttributesChanged = false; 1224 surfaceChanged = true; 1225 params = lp; 1226 } 1227 CompatibilityInfo compatibilityInfo = mDisplayAdjustments.getCompatibilityInfo(); 1228 if (compatibilityInfo.supportsScreen() == mLastInCompatMode) { 1229 params = lp; 1230 mFullRedrawNeeded = true; 1231 mLayoutRequested = true; 1232 if (mLastInCompatMode) { 1233 params.privateFlags &= ~WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 1234 mLastInCompatMode = false; 1235 } else { 1236 params.privateFlags |= WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 1237 mLastInCompatMode = true; 1238 } 1239 } 1240 1241 mWindowAttributesChangesFlag = 0; 1242 1243 Rect frame = mWinFrame; 1244 if (mFirst) { 1245 mFullRedrawNeeded = true; 1246 mLayoutRequested = true; 1247 1248 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL 1249 || lp.type == WindowManager.LayoutParams.TYPE_INPUT_METHOD) { 1250 // NOTE -- system code, won't try to do compat mode. 1251 Point size = new Point(); 1252 mDisplay.getRealSize(size); 1253 desiredWindowWidth = size.x; 1254 desiredWindowHeight = size.y; 1255 } else { 1256 DisplayMetrics packageMetrics = 1257 mView.getContext().getResources().getDisplayMetrics(); 1258 desiredWindowWidth = packageMetrics.widthPixels; 1259 desiredWindowHeight = packageMetrics.heightPixels; 1260 } 1261 1262 // We used to use the following condition to choose 32 bits drawing caches: 1263 // PixelFormat.hasAlpha(lp.format) || lp.format == PixelFormat.RGBX_8888 1264 // However, windows are now always 32 bits by default, so choose 32 bits 1265 attachInfo.mUse32BitDrawingCache = true; 1266 attachInfo.mHasWindowFocus = false; 1267 attachInfo.mWindowVisibility = viewVisibility; 1268 attachInfo.mRecomputeGlobalAttributes = false; 1269 viewVisibilityChanged = false; 1270 mLastConfiguration.setTo(host.getResources().getConfiguration()); 1271 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1272 // Set the layout direction if it has not been set before (inherit is the default) 1273 if (mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 1274 host.setLayoutDirection(mLastConfiguration.getLayoutDirection()); 1275 } 1276 host.dispatchAttachedToWindow(attachInfo, 0); 1277 attachInfo.mTreeObserver.dispatchOnWindowAttachedChange(true); 1278 dispatchApplyInsets(host); 1279 //Log.i(TAG, "Screen on initialized: " + attachInfo.mKeepScreenOn); 1280 1281 } else { 1282 desiredWindowWidth = frame.width(); 1283 desiredWindowHeight = frame.height(); 1284 if (desiredWindowWidth != mWidth || desiredWindowHeight != mHeight) { 1285 if (DEBUG_ORIENTATION) Log.v(TAG, 1286 "View " + host + " resized to: " + frame); 1287 mFullRedrawNeeded = true; 1288 mLayoutRequested = true; 1289 windowSizeMayChange = true; 1290 } 1291 } 1292 1293 if (viewVisibilityChanged) { 1294 attachInfo.mWindowVisibility = viewVisibility; 1295 host.dispatchWindowVisibilityChanged(viewVisibility); 1296 if (viewVisibility != View.VISIBLE || mNewSurfaceNeeded) { 1297 destroyHardwareResources(); 1298 } 1299 if (viewVisibility == View.GONE) { 1300 // After making a window gone, we will count it as being 1301 // shown for the first time the next time it gets focus. 1302 mHasHadWindowFocus = false; 1303 } 1304 } 1305 1306 // Execute enqueued actions on every traversal in case a detached view enqueued an action 1307 getRunQueue().executeActions(attachInfo.mHandler); 1308 1309 boolean insetsChanged = false; 1310 1311 boolean layoutRequested = mLayoutRequested && !mStopped; 1312 if (layoutRequested) { 1313 1314 final Resources res = mView.getContext().getResources(); 1315 1316 if (mFirst) { 1317 // make sure touch mode code executes by setting cached value 1318 // to opposite of the added touch mode. 1319 mAttachInfo.mInTouchMode = !mAddedTouchMode; 1320 ensureTouchModeLocally(mAddedTouchMode); 1321 } else { 1322 if (!mPendingOverscanInsets.equals(mAttachInfo.mOverscanInsets)) { 1323 insetsChanged = true; 1324 } 1325 if (!mPendingContentInsets.equals(mAttachInfo.mContentInsets)) { 1326 insetsChanged = true; 1327 } 1328 if (!mPendingVisibleInsets.equals(mAttachInfo.mVisibleInsets)) { 1329 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1330 if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: " 1331 + mAttachInfo.mVisibleInsets); 1332 } 1333 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT 1334 || lp.height == ViewGroup.LayoutParams.WRAP_CONTENT) { 1335 windowSizeMayChange = true; 1336 1337 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL 1338 || lp.type == WindowManager.LayoutParams.TYPE_INPUT_METHOD) { 1339 // NOTE -- system code, won't try to do compat mode. 1340 Point size = new Point(); 1341 mDisplay.getRealSize(size); 1342 desiredWindowWidth = size.x; 1343 desiredWindowHeight = size.y; 1344 } else { 1345 DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1346 desiredWindowWidth = packageMetrics.widthPixels; 1347 desiredWindowHeight = packageMetrics.heightPixels; 1348 } 1349 } 1350 } 1351 1352 // Ask host how big it wants to be 1353 windowSizeMayChange |= measureHierarchy(host, lp, res, 1354 desiredWindowWidth, desiredWindowHeight); 1355 } 1356 1357 if (collectViewAttributes()) { 1358 params = lp; 1359 } 1360 if (attachInfo.mForceReportNewAttributes) { 1361 attachInfo.mForceReportNewAttributes = false; 1362 params = lp; 1363 } 1364 1365 if (mFirst || attachInfo.mViewVisibilityChanged) { 1366 attachInfo.mViewVisibilityChanged = false; 1367 int resizeMode = mSoftInputMode & 1368 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST; 1369 // If we are in auto resize mode, then we need to determine 1370 // what mode to use now. 1371 if (resizeMode == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 1372 final int N = attachInfo.mScrollContainers.size(); 1373 for (int i=0; i<N; i++) { 1374 if (attachInfo.mScrollContainers.get(i).isShown()) { 1375 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE; 1376 } 1377 } 1378 if (resizeMode == 0) { 1379 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_PAN; 1380 } 1381 if ((lp.softInputMode & 1382 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) != resizeMode) { 1383 lp.softInputMode = (lp.softInputMode & 1384 ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) | 1385 resizeMode; 1386 params = lp; 1387 } 1388 } 1389 } 1390 1391 if (params != null) { 1392 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 1393 if (!PixelFormat.formatHasAlpha(params.format)) { 1394 params.format = PixelFormat.TRANSLUCENT; 1395 } 1396 } 1397 mAttachInfo.mOverscanRequested = (params.flags 1398 & WindowManager.LayoutParams.FLAG_LAYOUT_IN_OVERSCAN) != 0; 1399 } 1400 1401 if (mFitSystemWindowsRequested) { 1402 mFitSystemWindowsRequested = false; 1403 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1404 dispatchApplyInsets(host); 1405 if (mLayoutRequested) { 1406 // Short-circuit catching a new layout request here, so 1407 // we don't need to go through two layout passes when things 1408 // change due to fitting system windows, which can happen a lot. 1409 windowSizeMayChange |= measureHierarchy(host, lp, 1410 mView.getContext().getResources(), 1411 desiredWindowWidth, desiredWindowHeight); 1412 } 1413 } 1414 1415 if (layoutRequested) { 1416 // Clear this now, so that if anything requests a layout in the 1417 // rest of this function we will catch it and re-run a full 1418 // layout pass. 1419 mLayoutRequested = false; 1420 } 1421 1422 boolean windowShouldResize = layoutRequested && windowSizeMayChange 1423 && ((mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) 1424 || (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT && 1425 frame.width() < desiredWindowWidth && frame.width() != mWidth) 1426 || (lp.height == ViewGroup.LayoutParams.WRAP_CONTENT && 1427 frame.height() < desiredWindowHeight && frame.height() != mHeight)); 1428 1429 // Determine whether to compute insets. 1430 // If there are no inset listeners remaining then we may still need to compute 1431 // insets in case the old insets were non-empty and must be reset. 1432 final boolean computesInternalInsets = 1433 attachInfo.mTreeObserver.hasComputeInternalInsetsListeners() 1434 || attachInfo.mHasNonEmptyGivenInternalInsets; 1435 1436 boolean insetsPending = false; 1437 int relayoutResult = 0; 1438 1439 if (mFirst || windowShouldResize || insetsChanged || 1440 viewVisibilityChanged || params != null) { 1441 1442 if (viewVisibility == View.VISIBLE) { 1443 // If this window is giving internal insets to the window 1444 // manager, and it is being added or changing its visibility, 1445 // then we want to first give the window manager "fake" 1446 // insets to cause it to effectively ignore the content of 1447 // the window during layout. This avoids it briefly causing 1448 // other windows to resize/move based on the raw frame of the 1449 // window, waiting until we can finish laying out this window 1450 // and get back to the window manager with the ultimately 1451 // computed insets. 1452 insetsPending = computesInternalInsets && (mFirst || viewVisibilityChanged); 1453 } 1454 1455 if (mSurfaceHolder != null) { 1456 mSurfaceHolder.mSurfaceLock.lock(); 1457 mDrawingAllowed = true; 1458 } 1459 1460 boolean hwInitialized = false; 1461 boolean contentInsetsChanged = false; 1462 boolean hadSurface = mSurface.isValid(); 1463 1464 try { 1465 if (DEBUG_LAYOUT) { 1466 Log.i(TAG, "host=w:" + host.getMeasuredWidth() + ", h:" + 1467 host.getMeasuredHeight() + ", params=" + params); 1468 } 1469 1470 if (mAttachInfo.mHardwareRenderer != null) { 1471 // relayoutWindow may decide to destroy mSurface. As that decision 1472 // happens in WindowManager service, we need to be defensive here 1473 // and stop using the surface in case it gets destroyed. 1474 mAttachInfo.mHardwareRenderer.pauseSurface(mSurface); 1475 } 1476 final int surfaceGenerationId = mSurface.getGenerationId(); 1477 relayoutResult = relayoutWindow(params, viewVisibility, insetsPending); 1478 if (!mDrawDuringWindowsAnimating && 1479 (relayoutResult & WindowManagerGlobal.RELAYOUT_RES_ANIMATING) != 0) { 1480 mWindowsAnimating = true; 1481 } 1482 1483 if (DEBUG_LAYOUT) Log.v(TAG, "relayout: frame=" + frame.toShortString() 1484 + " overscan=" + mPendingOverscanInsets.toShortString() 1485 + " content=" + mPendingContentInsets.toShortString() 1486 + " visible=" + mPendingVisibleInsets.toShortString() 1487 + " surface=" + mSurface); 1488 1489 if (mPendingConfiguration.seq != 0) { 1490 if (DEBUG_CONFIGURATION) Log.v(TAG, "Visible with new config: " 1491 + mPendingConfiguration); 1492 updateConfiguration(mPendingConfiguration, !mFirst); 1493 mPendingConfiguration.seq = 0; 1494 } 1495 1496 final boolean overscanInsetsChanged = !mPendingOverscanInsets.equals( 1497 mAttachInfo.mOverscanInsets); 1498 contentInsetsChanged = !mPendingContentInsets.equals( 1499 mAttachInfo.mContentInsets); 1500 final boolean visibleInsetsChanged = !mPendingVisibleInsets.equals( 1501 mAttachInfo.mVisibleInsets); 1502 if (contentInsetsChanged) { 1503 if (mWidth > 0 && mHeight > 0 && lp != null && 1504 ((lp.systemUiVisibility|lp.subtreeSystemUiVisibility) 1505 & View.SYSTEM_UI_LAYOUT_FLAGS) == 0 && 1506 mSurface != null && mSurface.isValid() && 1507 !mAttachInfo.mTurnOffWindowResizeAnim && 1508 mAttachInfo.mHardwareRenderer != null && 1509 mAttachInfo.mHardwareRenderer.isEnabled() && 1510 lp != null && !PixelFormat.formatHasAlpha(lp.format) 1511 && !mBlockResizeBuffer) { 1512 1513 disposeResizeBuffer(); 1514 1515// TODO: Again.... 1516// if (mResizeBuffer == null) { 1517// mResizeBuffer = mAttachInfo.mHardwareRenderer.createDisplayListLayer( 1518// mWidth, mHeight); 1519// } 1520// mResizeBuffer.prepare(mWidth, mHeight, false); 1521// RenderNode layerRenderNode = mResizeBuffer.startRecording(); 1522// HardwareCanvas layerCanvas = layerRenderNode.start(mWidth, mHeight); 1523// try { 1524// final int restoreCount = layerCanvas.save(); 1525// 1526// int yoff; 1527// final boolean scrolling = mScroller != null 1528// && mScroller.computeScrollOffset(); 1529// if (scrolling) { 1530// yoff = mScroller.getCurrY(); 1531// mScroller.abortAnimation(); 1532// } else { 1533// yoff = mScrollY; 1534// } 1535// 1536// layerCanvas.translate(0, -yoff); 1537// if (mTranslator != null) { 1538// mTranslator.translateCanvas(layerCanvas); 1539// } 1540// 1541// RenderNode renderNode = mView.mRenderNode; 1542// if (renderNode != null && renderNode.isValid()) { 1543// layerCanvas.drawDisplayList(renderNode, null, 1544// RenderNode.FLAG_CLIP_CHILDREN); 1545// } else { 1546// mView.draw(layerCanvas); 1547// } 1548// 1549// drawAccessibilityFocusedDrawableIfNeeded(layerCanvas); 1550// 1551// mResizeBufferStartTime = SystemClock.uptimeMillis(); 1552// mResizeBufferDuration = mView.getResources().getInteger( 1553// com.android.internal.R.integer.config_mediumAnimTime); 1554// 1555// layerCanvas.restoreToCount(restoreCount); 1556// layerRenderNode.end(layerCanvas); 1557// layerRenderNode.setCaching(true); 1558// layerRenderNode.setLeftTopRightBottom(0, 0, mWidth, mHeight); 1559// mTempRect.set(0, 0, mWidth, mHeight); 1560// } finally { 1561// mResizeBuffer.endRecording(mTempRect); 1562// } 1563// mAttachInfo.mHardwareRenderer.flushLayerUpdates(); 1564 } 1565 mAttachInfo.mContentInsets.set(mPendingContentInsets); 1566 if (DEBUG_LAYOUT) Log.v(TAG, "Content insets changing to: " 1567 + mAttachInfo.mContentInsets); 1568 } 1569 if (overscanInsetsChanged) { 1570 mAttachInfo.mOverscanInsets.set(mPendingOverscanInsets); 1571 if (DEBUG_LAYOUT) Log.v(TAG, "Overscan insets changing to: " 1572 + mAttachInfo.mOverscanInsets); 1573 // Need to relayout with content insets. 1574 contentInsetsChanged = true; 1575 } 1576 if (contentInsetsChanged || mLastSystemUiVisibility != 1577 mAttachInfo.mSystemUiVisibility || mFitSystemWindowsRequested 1578 || mLastOverscanRequested != mAttachInfo.mOverscanRequested) { 1579 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1580 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1581 mFitSystemWindowsRequested = false; 1582 dispatchApplyInsets(host); 1583 } 1584 if (visibleInsetsChanged) { 1585 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1586 if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: " 1587 + mAttachInfo.mVisibleInsets); 1588 } 1589 1590 if (!hadSurface) { 1591 if (mSurface.isValid()) { 1592 // If we are creating a new surface, then we need to 1593 // completely redraw it. Also, when we get to the 1594 // point of drawing it we will hold off and schedule 1595 // a new traversal instead. This is so we can tell the 1596 // window manager about all of the windows being displayed 1597 // before actually drawing them, so it can display then 1598 // all at once. 1599 newSurface = true; 1600 mFullRedrawNeeded = true; 1601 mPreviousTransparentRegion.setEmpty(); 1602 1603 if (mAttachInfo.mHardwareRenderer != null) { 1604 try { 1605 hwInitialized = mAttachInfo.mHardwareRenderer.initialize( 1606 mSurface); 1607 } catch (OutOfResourcesException e) { 1608 handleOutOfResourcesException(e); 1609 return; 1610 } 1611 } 1612 } 1613 } else if (!mSurface.isValid()) { 1614 // If the surface has been removed, then reset the scroll 1615 // positions. 1616 if (mLastScrolledFocus != null) { 1617 mLastScrolledFocus.clear(); 1618 } 1619 mScrollY = mCurScrollY = 0; 1620 if (mScroller != null) { 1621 mScroller.abortAnimation(); 1622 } 1623 disposeResizeBuffer(); 1624 // Our surface is gone 1625 if (mAttachInfo.mHardwareRenderer != null && 1626 mAttachInfo.mHardwareRenderer.isEnabled()) { 1627 mAttachInfo.mHardwareRenderer.destroy(true); 1628 } 1629 } else if (surfaceGenerationId != mSurface.getGenerationId() && 1630 mSurfaceHolder == null && mAttachInfo.mHardwareRenderer != null) { 1631 mFullRedrawNeeded = true; 1632 try { 1633 mAttachInfo.mHardwareRenderer.updateSurface(mSurface); 1634 } catch (OutOfResourcesException e) { 1635 handleOutOfResourcesException(e); 1636 return; 1637 } 1638 } 1639 } catch (RemoteException e) { 1640 } 1641 1642 if (DEBUG_ORIENTATION) Log.v( 1643 TAG, "Relayout returned: frame=" + frame + ", surface=" + mSurface); 1644 1645 attachInfo.mWindowLeft = frame.left; 1646 attachInfo.mWindowTop = frame.top; 1647 1648 // !!FIXME!! This next section handles the case where we did not get the 1649 // window size we asked for. We should avoid this by getting a maximum size from 1650 // the window session beforehand. 1651 if (mWidth != frame.width() || mHeight != frame.height()) { 1652 mWidth = frame.width(); 1653 mHeight = frame.height(); 1654 } 1655 1656 if (mSurfaceHolder != null) { 1657 // The app owns the surface; tell it about what is going on. 1658 if (mSurface.isValid()) { 1659 // XXX .copyFrom() doesn't work! 1660 //mSurfaceHolder.mSurface.copyFrom(mSurface); 1661 mSurfaceHolder.mSurface = mSurface; 1662 } 1663 mSurfaceHolder.setSurfaceFrameSize(mWidth, mHeight); 1664 mSurfaceHolder.mSurfaceLock.unlock(); 1665 if (mSurface.isValid()) { 1666 if (!hadSurface) { 1667 mSurfaceHolder.ungetCallbacks(); 1668 1669 mIsCreating = true; 1670 mSurfaceHolderCallback.surfaceCreated(mSurfaceHolder); 1671 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1672 if (callbacks != null) { 1673 for (SurfaceHolder.Callback c : callbacks) { 1674 c.surfaceCreated(mSurfaceHolder); 1675 } 1676 } 1677 surfaceChanged = true; 1678 } 1679 if (surfaceChanged) { 1680 mSurfaceHolderCallback.surfaceChanged(mSurfaceHolder, 1681 lp.format, mWidth, mHeight); 1682 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1683 if (callbacks != null) { 1684 for (SurfaceHolder.Callback c : callbacks) { 1685 c.surfaceChanged(mSurfaceHolder, lp.format, 1686 mWidth, mHeight); 1687 } 1688 } 1689 } 1690 mIsCreating = false; 1691 } else if (hadSurface) { 1692 mSurfaceHolder.ungetCallbacks(); 1693 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1694 mSurfaceHolderCallback.surfaceDestroyed(mSurfaceHolder); 1695 if (callbacks != null) { 1696 for (SurfaceHolder.Callback c : callbacks) { 1697 c.surfaceDestroyed(mSurfaceHolder); 1698 } 1699 } 1700 mSurfaceHolder.mSurfaceLock.lock(); 1701 try { 1702 mSurfaceHolder.mSurface = new Surface(); 1703 } finally { 1704 mSurfaceHolder.mSurfaceLock.unlock(); 1705 } 1706 } 1707 } 1708 1709 if (mAttachInfo.mHardwareRenderer != null && 1710 mAttachInfo.mHardwareRenderer.isEnabled()) { 1711 if (hwInitialized || 1712 mWidth != mAttachInfo.mHardwareRenderer.getWidth() || 1713 mHeight != mAttachInfo.mHardwareRenderer.getHeight()) { 1714 mAttachInfo.mHardwareRenderer.setup(mWidth, mHeight, 1715 mAttachInfo.mRootView.getResources().getDisplayMetrics()); 1716 if (!hwInitialized) { 1717 mAttachInfo.mHardwareRenderer.invalidate(mSurface); 1718 mFullRedrawNeeded = true; 1719 } 1720 } 1721 } 1722 1723 if (!mStopped) { 1724 boolean focusChangedDueToTouchMode = ensureTouchModeLocally( 1725 (relayoutResult&WindowManagerGlobal.RELAYOUT_RES_IN_TOUCH_MODE) != 0); 1726 if (focusChangedDueToTouchMode || mWidth != host.getMeasuredWidth() 1727 || mHeight != host.getMeasuredHeight() || contentInsetsChanged) { 1728 int childWidthMeasureSpec = getRootMeasureSpec(mWidth, lp.width); 1729 int childHeightMeasureSpec = getRootMeasureSpec(mHeight, lp.height); 1730 1731 if (DEBUG_LAYOUT) Log.v(TAG, "Ooops, something changed! mWidth=" 1732 + mWidth + " measuredWidth=" + host.getMeasuredWidth() 1733 + " mHeight=" + mHeight 1734 + " measuredHeight=" + host.getMeasuredHeight() 1735 + " coveredInsetsChanged=" + contentInsetsChanged); 1736 1737 // Ask host how big it wants to be 1738 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1739 1740 // Implementation of weights from WindowManager.LayoutParams 1741 // We just grow the dimensions as needed and re-measure if 1742 // needs be 1743 int width = host.getMeasuredWidth(); 1744 int height = host.getMeasuredHeight(); 1745 boolean measureAgain = false; 1746 1747 if (lp.horizontalWeight > 0.0f) { 1748 width += (int) ((mWidth - width) * lp.horizontalWeight); 1749 childWidthMeasureSpec = MeasureSpec.makeMeasureSpec(width, 1750 MeasureSpec.EXACTLY); 1751 measureAgain = true; 1752 } 1753 if (lp.verticalWeight > 0.0f) { 1754 height += (int) ((mHeight - height) * lp.verticalWeight); 1755 childHeightMeasureSpec = MeasureSpec.makeMeasureSpec(height, 1756 MeasureSpec.EXACTLY); 1757 measureAgain = true; 1758 } 1759 1760 if (measureAgain) { 1761 if (DEBUG_LAYOUT) Log.v(TAG, 1762 "And hey let's measure once more: width=" + width 1763 + " height=" + height); 1764 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1765 } 1766 1767 layoutRequested = true; 1768 } 1769 } 1770 } else { 1771 // Not the first pass and no window/insets/visibility change but the window 1772 // may have moved and we need check that and if so to update the left and right 1773 // in the attach info. We translate only the window frame since on window move 1774 // the window manager tells us only for the new frame but the insets are the 1775 // same and we do not want to translate them more than once. 1776 1777 // TODO: Well, we are checking whether the frame has changed similarly 1778 // to how this is done for the insets. This is however incorrect since 1779 // the insets and the frame are translated. For example, the old frame 1780 // was (1, 1 - 1, 1) and was translated to say (2, 2 - 2, 2), now the new 1781 // reported frame is (2, 2 - 2, 2) which implies no change but this is not 1782 // true since we are comparing a not translated value to a translated one. 1783 // This scenario is rare but we may want to fix that. 1784 1785 final boolean windowMoved = (attachInfo.mWindowLeft != frame.left 1786 || attachInfo.mWindowTop != frame.top); 1787 if (windowMoved) { 1788 if (mTranslator != null) { 1789 mTranslator.translateRectInScreenToAppWinFrame(frame); 1790 } 1791 attachInfo.mWindowLeft = frame.left; 1792 attachInfo.mWindowTop = frame.top; 1793 } 1794 } 1795 1796 final boolean didLayout = layoutRequested && !mStopped; 1797 boolean triggerGlobalLayoutListener = didLayout 1798 || attachInfo.mRecomputeGlobalAttributes; 1799 if (didLayout) { 1800 performLayout(lp, desiredWindowWidth, desiredWindowHeight); 1801 1802 // By this point all views have been sized and positioned 1803 // We can compute the transparent area 1804 1805 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 1806 // start out transparent 1807 // TODO: AVOID THAT CALL BY CACHING THE RESULT? 1808 host.getLocationInWindow(mTmpLocation); 1809 mTransparentRegion.set(mTmpLocation[0], mTmpLocation[1], 1810 mTmpLocation[0] + host.mRight - host.mLeft, 1811 mTmpLocation[1] + host.mBottom - host.mTop); 1812 1813 host.gatherTransparentRegion(mTransparentRegion); 1814 if (mTranslator != null) { 1815 mTranslator.translateRegionInWindowToScreen(mTransparentRegion); 1816 } 1817 1818 if (!mTransparentRegion.equals(mPreviousTransparentRegion)) { 1819 mPreviousTransparentRegion.set(mTransparentRegion); 1820 mFullRedrawNeeded = true; 1821 // reconfigure window manager 1822 try { 1823 mWindowSession.setTransparentRegion(mWindow, mTransparentRegion); 1824 } catch (RemoteException e) { 1825 } 1826 } 1827 } 1828 1829 if (DBG) { 1830 System.out.println("======================================"); 1831 System.out.println("performTraversals -- after setFrame"); 1832 host.debug(); 1833 } 1834 } 1835 1836 if (triggerGlobalLayoutListener) { 1837 attachInfo.mRecomputeGlobalAttributes = false; 1838 attachInfo.mTreeObserver.dispatchOnGlobalLayout(); 1839 } 1840 1841 if (computesInternalInsets) { 1842 // Clear the original insets. 1843 final ViewTreeObserver.InternalInsetsInfo insets = attachInfo.mGivenInternalInsets; 1844 insets.reset(); 1845 1846 // Compute new insets in place. 1847 attachInfo.mTreeObserver.dispatchOnComputeInternalInsets(insets); 1848 attachInfo.mHasNonEmptyGivenInternalInsets = !insets.isEmpty(); 1849 1850 // Tell the window manager. 1851 if (insetsPending || !mLastGivenInsets.equals(insets)) { 1852 mLastGivenInsets.set(insets); 1853 1854 // Translate insets to screen coordinates if needed. 1855 final Rect contentInsets; 1856 final Rect visibleInsets; 1857 final Region touchableRegion; 1858 if (mTranslator != null) { 1859 contentInsets = mTranslator.getTranslatedContentInsets(insets.contentInsets); 1860 visibleInsets = mTranslator.getTranslatedVisibleInsets(insets.visibleInsets); 1861 touchableRegion = mTranslator.getTranslatedTouchableArea(insets.touchableRegion); 1862 } else { 1863 contentInsets = insets.contentInsets; 1864 visibleInsets = insets.visibleInsets; 1865 touchableRegion = insets.touchableRegion; 1866 } 1867 1868 try { 1869 mWindowSession.setInsets(mWindow, insets.mTouchableInsets, 1870 contentInsets, visibleInsets, touchableRegion); 1871 } catch (RemoteException e) { 1872 } 1873 } 1874 } 1875 1876 boolean skipDraw = false; 1877 1878 if (mFirst) { 1879 // handle first focus request 1880 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: mView.hasFocus()=" 1881 + mView.hasFocus()); 1882 if (mView != null) { 1883 if (!mView.hasFocus()) { 1884 mView.requestFocus(View.FOCUS_FORWARD); 1885 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: requested focused view=" 1886 + mView.findFocus()); 1887 } else { 1888 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: existing focused view=" 1889 + mView.findFocus()); 1890 } 1891 } 1892 if ((relayoutResult & WindowManagerGlobal.RELAYOUT_RES_ANIMATING) != 0) { 1893 // The first time we relayout the window, if the system is 1894 // doing window animations, we want to hold of on any future 1895 // draws until the animation is done. 1896 mWindowsAnimating = true; 1897 } 1898 } else if (mWindowsAnimating) { 1899 skipDraw = true; 1900 } 1901 1902 mFirst = false; 1903 mWillDrawSoon = false; 1904 mNewSurfaceNeeded = false; 1905 mViewVisibility = viewVisibility; 1906 1907 if (mAttachInfo.mHasWindowFocus && !isInLocalFocusMode()) { 1908 final boolean imTarget = WindowManager.LayoutParams 1909 .mayUseInputMethod(mWindowAttributes.flags); 1910 if (imTarget != mLastWasImTarget) { 1911 mLastWasImTarget = imTarget; 1912 InputMethodManager imm = InputMethodManager.peekInstance(); 1913 if (imm != null && imTarget) { 1914 imm.startGettingWindowFocus(mView); 1915 imm.onWindowFocus(mView, mView.findFocus(), 1916 mWindowAttributes.softInputMode, 1917 !mHasHadWindowFocus, mWindowAttributes.flags); 1918 } 1919 } 1920 } 1921 1922 // Remember if we must report the next draw. 1923 if ((relayoutResult & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 1924 mReportNextDraw = true; 1925 } 1926 1927 boolean cancelDraw = attachInfo.mTreeObserver.dispatchOnPreDraw() || 1928 viewVisibility != View.VISIBLE; 1929 1930 if (!cancelDraw && !newSurface) { 1931 if (!skipDraw || mReportNextDraw) { 1932 if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 1933 for (int i = 0; i < mPendingTransitions.size(); ++i) { 1934 mPendingTransitions.get(i).startChangingAnimations(); 1935 } 1936 mPendingTransitions.clear(); 1937 } 1938 1939 performDraw(); 1940 } 1941 } else { 1942 if (viewVisibility == View.VISIBLE) { 1943 // Try again 1944 scheduleTraversals(); 1945 } else if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 1946 for (int i = 0; i < mPendingTransitions.size(); ++i) { 1947 mPendingTransitions.get(i).endChangingAnimations(); 1948 } 1949 mPendingTransitions.clear(); 1950 } 1951 } 1952 1953 mIsInTraversal = false; 1954 } 1955 1956 private void handleOutOfResourcesException(Surface.OutOfResourcesException e) { 1957 Log.e(TAG, "OutOfResourcesException initializing HW surface", e); 1958 try { 1959 if (!mWindowSession.outOfMemory(mWindow) && 1960 Process.myUid() != Process.SYSTEM_UID) { 1961 Slog.w(TAG, "No processes killed for memory; killing self"); 1962 Process.killProcess(Process.myPid()); 1963 } 1964 } catch (RemoteException ex) { 1965 } 1966 mLayoutRequested = true; // ask wm for a new surface next time. 1967 } 1968 1969 private void performMeasure(int childWidthMeasureSpec, int childHeightMeasureSpec) { 1970 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "measure"); 1971 try { 1972 mView.measure(childWidthMeasureSpec, childHeightMeasureSpec); 1973 } finally { 1974 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 1975 } 1976 } 1977 1978 /** 1979 * Called by {@link android.view.View#isInLayout()} to determine whether the view hierarchy 1980 * is currently undergoing a layout pass. 1981 * 1982 * @return whether the view hierarchy is currently undergoing a layout pass 1983 */ 1984 boolean isInLayout() { 1985 return mInLayout; 1986 } 1987 1988 /** 1989 * Called by {@link android.view.View#requestLayout()} if the view hierarchy is currently 1990 * undergoing a layout pass. requestLayout() should not generally be called during layout, 1991 * unless the container hierarchy knows what it is doing (i.e., it is fine as long as 1992 * all children in that container hierarchy are measured and laid out at the end of the layout 1993 * pass for that container). If requestLayout() is called anyway, we handle it correctly 1994 * by registering all requesters during a frame as it proceeds. At the end of the frame, 1995 * we check all of those views to see if any still have pending layout requests, which 1996 * indicates that they were not correctly handled by their container hierarchy. If that is 1997 * the case, we clear all such flags in the tree, to remove the buggy flag state that leads 1998 * to blank containers, and force a second request/measure/layout pass in this frame. If 1999 * more requestLayout() calls are received during that second layout pass, we post those 2000 * requests to the next frame to avoid possible infinite loops. 2001 * 2002 * <p>The return value from this method indicates whether the request should proceed 2003 * (if it is a request during the first layout pass) or should be skipped and posted to the 2004 * next frame (if it is a request during the second layout pass).</p> 2005 * 2006 * @param view the view that requested the layout. 2007 * 2008 * @return true if request should proceed, false otherwise. 2009 */ 2010 boolean requestLayoutDuringLayout(final View view) { 2011 if (view.mParent == null || view.mAttachInfo == null) { 2012 // Would not normally trigger another layout, so just let it pass through as usual 2013 return true; 2014 } 2015 if (!mLayoutRequesters.contains(view)) { 2016 mLayoutRequesters.add(view); 2017 } 2018 if (!mHandlingLayoutInLayoutRequest) { 2019 // Let the request proceed normally; it will be processed in a second layout pass 2020 // if necessary 2021 return true; 2022 } else { 2023 // Don't let the request proceed during the second layout pass. 2024 // It will post to the next frame instead. 2025 return false; 2026 } 2027 } 2028 2029 private void performLayout(WindowManager.LayoutParams lp, int desiredWindowWidth, 2030 int desiredWindowHeight) { 2031 mLayoutRequested = false; 2032 mScrollMayChange = true; 2033 mInLayout = true; 2034 2035 final View host = mView; 2036 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) { 2037 Log.v(TAG, "Laying out " + host + " to (" + 2038 host.getMeasuredWidth() + ", " + host.getMeasuredHeight() + ")"); 2039 } 2040 2041 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "layout"); 2042 try { 2043 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 2044 2045 mInLayout = false; 2046 int numViewsRequestingLayout = mLayoutRequesters.size(); 2047 if (numViewsRequestingLayout > 0) { 2048 // requestLayout() was called during layout. 2049 // If no layout-request flags are set on the requesting views, there is no problem. 2050 // If some requests are still pending, then we need to clear those flags and do 2051 // a full request/measure/layout pass to handle this situation. 2052 ArrayList<View> validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, 2053 false); 2054 if (validLayoutRequesters != null) { 2055 // Set this flag to indicate that any further requests are happening during 2056 // the second pass, which may result in posting those requests to the next 2057 // frame instead 2058 mHandlingLayoutInLayoutRequest = true; 2059 2060 // Process fresh layout requests, then measure and layout 2061 int numValidRequests = validLayoutRequesters.size(); 2062 for (int i = 0; i < numValidRequests; ++i) { 2063 final View view = validLayoutRequesters.get(i); 2064 Log.w("View", "requestLayout() improperly called by " + view + 2065 " during layout: running second layout pass"); 2066 view.requestLayout(); 2067 } 2068 measureHierarchy(host, lp, mView.getContext().getResources(), 2069 desiredWindowWidth, desiredWindowHeight); 2070 mInLayout = true; 2071 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 2072 2073 mHandlingLayoutInLayoutRequest = false; 2074 2075 // Check the valid requests again, this time without checking/clearing the 2076 // layout flags, since requests happening during the second pass get noop'd 2077 validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, true); 2078 if (validLayoutRequesters != null) { 2079 final ArrayList<View> finalRequesters = validLayoutRequesters; 2080 // Post second-pass requests to the next frame 2081 getRunQueue().post(new Runnable() { 2082 @Override 2083 public void run() { 2084 int numValidRequests = finalRequesters.size(); 2085 for (int i = 0; i < numValidRequests; ++i) { 2086 final View view = finalRequesters.get(i); 2087 Log.w("View", "requestLayout() improperly called by " + view + 2088 " during second layout pass: posting in next frame"); 2089 view.requestLayout(); 2090 } 2091 } 2092 }); 2093 } 2094 } 2095 2096 } 2097 } finally { 2098 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2099 } 2100 mInLayout = false; 2101 } 2102 2103 /** 2104 * This method is called during layout when there have been calls to requestLayout() during 2105 * layout. It walks through the list of views that requested layout to determine which ones 2106 * still need it, based on visibility in the hierarchy and whether they have already been 2107 * handled (as is usually the case with ListView children). 2108 * 2109 * @param layoutRequesters The list of views that requested layout during layout 2110 * @param secondLayoutRequests Whether the requests were issued during the second layout pass. 2111 * If so, the FORCE_LAYOUT flag was not set on requesters. 2112 * @return A list of the actual views that still need to be laid out. 2113 */ 2114 private ArrayList<View> getValidLayoutRequesters(ArrayList<View> layoutRequesters, 2115 boolean secondLayoutRequests) { 2116 2117 int numViewsRequestingLayout = layoutRequesters.size(); 2118 ArrayList<View> validLayoutRequesters = null; 2119 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2120 View view = layoutRequesters.get(i); 2121 if (view != null && view.mAttachInfo != null && view.mParent != null && 2122 (secondLayoutRequests || (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) == 2123 View.PFLAG_FORCE_LAYOUT)) { 2124 boolean gone = false; 2125 View parent = view; 2126 // Only trigger new requests for views in a non-GONE hierarchy 2127 while (parent != null) { 2128 if ((parent.mViewFlags & View.VISIBILITY_MASK) == View.GONE) { 2129 gone = true; 2130 break; 2131 } 2132 if (parent.mParent instanceof View) { 2133 parent = (View) parent.mParent; 2134 } else { 2135 parent = null; 2136 } 2137 } 2138 if (!gone) { 2139 if (validLayoutRequesters == null) { 2140 validLayoutRequesters = new ArrayList<View>(); 2141 } 2142 validLayoutRequesters.add(view); 2143 } 2144 } 2145 } 2146 if (!secondLayoutRequests) { 2147 // If we're checking the layout flags, then we need to clean them up also 2148 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2149 View view = layoutRequesters.get(i); 2150 while (view != null && 2151 (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) != 0) { 2152 view.mPrivateFlags &= ~View.PFLAG_FORCE_LAYOUT; 2153 if (view.mParent instanceof View) { 2154 view = (View) view.mParent; 2155 } else { 2156 view = null; 2157 } 2158 } 2159 } 2160 } 2161 layoutRequesters.clear(); 2162 return validLayoutRequesters; 2163 } 2164 2165 @Override 2166 public void requestTransparentRegion(View child) { 2167 // the test below should not fail unless someone is messing with us 2168 checkThread(); 2169 if (mView == child) { 2170 mView.mPrivateFlags |= View.PFLAG_REQUEST_TRANSPARENT_REGIONS; 2171 // Need to make sure we re-evaluate the window attributes next 2172 // time around, to ensure the window has the correct format. 2173 mWindowAttributesChanged = true; 2174 mWindowAttributesChangesFlag = 0; 2175 requestLayout(); 2176 } 2177 } 2178 2179 /** 2180 * Figures out the measure spec for the root view in a window based on it's 2181 * layout params. 2182 * 2183 * @param windowSize 2184 * The available width or height of the window 2185 * 2186 * @param rootDimension 2187 * The layout params for one dimension (width or height) of the 2188 * window. 2189 * 2190 * @return The measure spec to use to measure the root view. 2191 */ 2192 private static int getRootMeasureSpec(int windowSize, int rootDimension) { 2193 int measureSpec; 2194 switch (rootDimension) { 2195 2196 case ViewGroup.LayoutParams.MATCH_PARENT: 2197 // Window can't resize. Force root view to be windowSize. 2198 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.EXACTLY); 2199 break; 2200 case ViewGroup.LayoutParams.WRAP_CONTENT: 2201 // Window can resize. Set max size for root view. 2202 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.AT_MOST); 2203 break; 2204 default: 2205 // Window wants to be an exact size. Force root view to be that size. 2206 measureSpec = MeasureSpec.makeMeasureSpec(rootDimension, MeasureSpec.EXACTLY); 2207 break; 2208 } 2209 return measureSpec; 2210 } 2211 2212 int mHardwareYOffset; 2213 int mResizeAlpha; 2214 final Paint mResizePaint = new Paint(); 2215 2216 @Override 2217 public void onHardwarePreDraw(HardwareCanvas canvas) { 2218 canvas.translate(0, -mHardwareYOffset); 2219 } 2220 2221 @Override 2222 public void onHardwarePostDraw(HardwareCanvas canvas) { 2223 if (mResizeBuffer != null) { 2224 mResizePaint.setAlpha(mResizeAlpha); 2225 canvas.drawHardwareLayer(mResizeBuffer, 0.0f, mHardwareYOffset, mResizePaint); 2226 } 2227 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2228 } 2229 2230 /** 2231 * @hide 2232 */ 2233 void outputDisplayList(View view) { 2234 RenderNode renderNode = view.getDisplayList(); 2235 if (renderNode != null) { 2236 renderNode.output(); 2237 } 2238 } 2239 2240 /** 2241 * @see #PROPERTY_PROFILE_RENDERING 2242 */ 2243 private void profileRendering(boolean enabled) { 2244 if (mProfileRendering) { 2245 mRenderProfilingEnabled = enabled; 2246 2247 if (mRenderProfiler != null) { 2248 mChoreographer.removeFrameCallback(mRenderProfiler); 2249 } 2250 if (mRenderProfilingEnabled) { 2251 if (mRenderProfiler == null) { 2252 mRenderProfiler = new Choreographer.FrameCallback() { 2253 @Override 2254 public void doFrame(long frameTimeNanos) { 2255 mDirty.set(0, 0, mWidth, mHeight); 2256 scheduleTraversals(); 2257 if (mRenderProfilingEnabled) { 2258 mChoreographer.postFrameCallback(mRenderProfiler); 2259 } 2260 } 2261 }; 2262 } 2263 mChoreographer.postFrameCallback(mRenderProfiler); 2264 } else { 2265 mRenderProfiler = null; 2266 } 2267 } 2268 } 2269 2270 /** 2271 * Called from draw() when DEBUG_FPS is enabled 2272 */ 2273 private void trackFPS() { 2274 // Tracks frames per second drawn. First value in a series of draws may be bogus 2275 // because it down not account for the intervening idle time 2276 long nowTime = System.currentTimeMillis(); 2277 if (mFpsStartTime < 0) { 2278 mFpsStartTime = mFpsPrevTime = nowTime; 2279 mFpsNumFrames = 0; 2280 } else { 2281 ++mFpsNumFrames; 2282 String thisHash = Integer.toHexString(System.identityHashCode(this)); 2283 long frameTime = nowTime - mFpsPrevTime; 2284 long totalTime = nowTime - mFpsStartTime; 2285 Log.v(TAG, "0x" + thisHash + "\tFrame time:\t" + frameTime); 2286 mFpsPrevTime = nowTime; 2287 if (totalTime > 1000) { 2288 float fps = (float) mFpsNumFrames * 1000 / totalTime; 2289 Log.v(TAG, "0x" + thisHash + "\tFPS:\t" + fps); 2290 mFpsStartTime = nowTime; 2291 mFpsNumFrames = 0; 2292 } 2293 } 2294 } 2295 2296 private void performDraw() { 2297 if (mAttachInfo.mDisplayState == Display.STATE_OFF && !mReportNextDraw) { 2298 return; 2299 } 2300 2301 final boolean fullRedrawNeeded = mFullRedrawNeeded; 2302 mFullRedrawNeeded = false; 2303 2304 mIsDrawing = true; 2305 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "draw"); 2306 try { 2307 draw(fullRedrawNeeded); 2308 } finally { 2309 mIsDrawing = false; 2310 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2311 } 2312 2313 if (mReportNextDraw) { 2314 mReportNextDraw = false; 2315 if (mAttachInfo.mHardwareRenderer != null) { 2316 mAttachInfo.mHardwareRenderer.fence(); 2317 } 2318 2319 if (LOCAL_LOGV) { 2320 Log.v(TAG, "FINISHED DRAWING: " + mWindowAttributes.getTitle()); 2321 } 2322 if (mSurfaceHolder != null && mSurface.isValid()) { 2323 mSurfaceHolderCallback.surfaceRedrawNeeded(mSurfaceHolder); 2324 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 2325 if (callbacks != null) { 2326 for (SurfaceHolder.Callback c : callbacks) { 2327 if (c instanceof SurfaceHolder.Callback2) { 2328 ((SurfaceHolder.Callback2)c).surfaceRedrawNeeded( 2329 mSurfaceHolder); 2330 } 2331 } 2332 } 2333 } 2334 try { 2335 mWindowSession.finishDrawing(mWindow); 2336 } catch (RemoteException e) { 2337 } 2338 } 2339 } 2340 2341 private void draw(boolean fullRedrawNeeded) { 2342 Surface surface = mSurface; 2343 if (!surface.isValid()) { 2344 return; 2345 } 2346 2347 if (DEBUG_FPS) { 2348 trackFPS(); 2349 } 2350 2351 if (!sFirstDrawComplete) { 2352 synchronized (sFirstDrawHandlers) { 2353 sFirstDrawComplete = true; 2354 final int count = sFirstDrawHandlers.size(); 2355 for (int i = 0; i< count; i++) { 2356 mHandler.post(sFirstDrawHandlers.get(i)); 2357 } 2358 } 2359 } 2360 2361 scrollToRectOrFocus(null, false); 2362 2363 final AttachInfo attachInfo = mAttachInfo; 2364 if (attachInfo.mViewScrollChanged) { 2365 attachInfo.mViewScrollChanged = false; 2366 attachInfo.mTreeObserver.dispatchOnScrollChanged(); 2367 } 2368 2369 int yoff; 2370 boolean animating = mScroller != null && mScroller.computeScrollOffset(); 2371 if (animating) { 2372 yoff = mScroller.getCurrY(); 2373 } else { 2374 yoff = mScrollY; 2375 } 2376 if (mCurScrollY != yoff) { 2377 mCurScrollY = yoff; 2378 fullRedrawNeeded = true; 2379 } 2380 2381 final float appScale = attachInfo.mApplicationScale; 2382 final boolean scalingRequired = attachInfo.mScalingRequired; 2383 2384 int resizeAlpha = 0; 2385 if (mResizeBuffer != null) { 2386 long deltaTime = SystemClock.uptimeMillis() - mResizeBufferStartTime; 2387 if (deltaTime < mResizeBufferDuration) { 2388 float amt = deltaTime/(float) mResizeBufferDuration; 2389 amt = mResizeInterpolator.getInterpolation(amt); 2390 animating = true; 2391 resizeAlpha = 255 - (int)(amt*255); 2392 } else { 2393 disposeResizeBuffer(); 2394 } 2395 } 2396 2397 final Rect dirty = mDirty; 2398 if (mSurfaceHolder != null) { 2399 // The app owns the surface, we won't draw. 2400 dirty.setEmpty(); 2401 if (animating) { 2402 if (mScroller != null) { 2403 mScroller.abortAnimation(); 2404 } 2405 disposeResizeBuffer(); 2406 } 2407 return; 2408 } 2409 2410 if (fullRedrawNeeded) { 2411 attachInfo.mIgnoreDirtyState = true; 2412 dirty.set(0, 0, (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 2413 } 2414 2415 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2416 Log.v(TAG, "Draw " + mView + "/" 2417 + mWindowAttributes.getTitle() 2418 + ": dirty={" + dirty.left + "," + dirty.top 2419 + "," + dirty.right + "," + dirty.bottom + "} surface=" 2420 + surface + " surface.isValid()=" + surface.isValid() + ", appScale:" + 2421 appScale + ", width=" + mWidth + ", height=" + mHeight); 2422 } 2423 2424 attachInfo.mTreeObserver.dispatchOnDraw(); 2425 2426 if (!dirty.isEmpty() || mIsAnimating) { 2427 if (attachInfo.mHardwareRenderer != null && attachInfo.mHardwareRenderer.isEnabled()) { 2428 // Draw with hardware renderer. 2429 mIsAnimating = false; 2430 mHardwareYOffset = yoff; 2431 mResizeAlpha = resizeAlpha; 2432 2433 dirty.setEmpty(); 2434 2435 mBlockResizeBuffer = false; 2436 attachInfo.mHardwareRenderer.draw(mView, attachInfo, this); 2437 } else { 2438 // If we get here with a disabled & requested hardware renderer, something went 2439 // wrong (an invalidate posted right before we destroyed the hardware surface 2440 // for instance) so we should just bail out. Locking the surface with software 2441 // rendering at this point would lock it forever and prevent hardware renderer 2442 // from doing its job when it comes back. 2443 // Before we request a new frame we must however attempt to reinitiliaze the 2444 // hardware renderer if it's in requested state. This would happen after an 2445 // eglTerminate() for instance. 2446 if (attachInfo.mHardwareRenderer != null && 2447 !attachInfo.mHardwareRenderer.isEnabled() && 2448 attachInfo.mHardwareRenderer.isRequested()) { 2449 2450 try { 2451 attachInfo.mHardwareRenderer.initializeIfNeeded(mWidth, mHeight, 2452 mSurface, attachInfo.mRootView.getResources().getDisplayMetrics()); 2453 } catch (OutOfResourcesException e) { 2454 handleOutOfResourcesException(e); 2455 return; 2456 } 2457 2458 mFullRedrawNeeded = true; 2459 scheduleTraversals(); 2460 return; 2461 } 2462 2463 if (!drawSoftware(surface, attachInfo, yoff, scalingRequired, dirty)) { 2464 return; 2465 } 2466 } 2467 } 2468 2469 if (animating) { 2470 mFullRedrawNeeded = true; 2471 scheduleTraversals(); 2472 } 2473 } 2474 2475 /** 2476 * @return true if drawing was succesfull, false if an error occurred 2477 */ 2478 private boolean drawSoftware(Surface surface, AttachInfo attachInfo, int yoff, 2479 boolean scalingRequired, Rect dirty) { 2480 2481 // Draw with software renderer. 2482 Canvas canvas; 2483 try { 2484 int left = dirty.left; 2485 int top = dirty.top; 2486 int right = dirty.right; 2487 int bottom = dirty.bottom; 2488 2489 canvas = mSurface.lockCanvas(dirty); 2490 2491 // The dirty rectangle can be modified by Surface.lockCanvas() 2492 //noinspection ConstantConditions 2493 if (left != dirty.left || top != dirty.top || right != dirty.right || 2494 bottom != dirty.bottom) { 2495 attachInfo.mIgnoreDirtyState = true; 2496 } 2497 2498 // TODO: Do this in native 2499 canvas.setDensity(mDensity); 2500 } catch (Surface.OutOfResourcesException e) { 2501 handleOutOfResourcesException(e); 2502 return false; 2503 } catch (IllegalArgumentException e) { 2504 Log.e(TAG, "Could not lock surface", e); 2505 // Don't assume this is due to out of memory, it could be 2506 // something else, and if it is something else then we could 2507 // kill stuff (or ourself) for no reason. 2508 mLayoutRequested = true; // ask wm for a new surface next time. 2509 return false; 2510 } 2511 2512 try { 2513 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2514 Log.v(TAG, "Surface " + surface + " drawing to bitmap w=" 2515 + canvas.getWidth() + ", h=" + canvas.getHeight()); 2516 //canvas.drawARGB(255, 255, 0, 0); 2517 } 2518 2519 // If this bitmap's format includes an alpha channel, we 2520 // need to clear it before drawing so that the child will 2521 // properly re-composite its drawing on a transparent 2522 // background. This automatically respects the clip/dirty region 2523 // or 2524 // If we are applying an offset, we need to clear the area 2525 // where the offset doesn't appear to avoid having garbage 2526 // left in the blank areas. 2527 if (!canvas.isOpaque() || yoff != 0) { 2528 canvas.drawColor(0, PorterDuff.Mode.CLEAR); 2529 } 2530 2531 dirty.setEmpty(); 2532 mIsAnimating = false; 2533 attachInfo.mDrawingTime = SystemClock.uptimeMillis(); 2534 mView.mPrivateFlags |= View.PFLAG_DRAWN; 2535 2536 if (DEBUG_DRAW) { 2537 Context cxt = mView.getContext(); 2538 Log.i(TAG, "Drawing: package:" + cxt.getPackageName() + 2539 ", metrics=" + cxt.getResources().getDisplayMetrics() + 2540 ", compatibilityInfo=" + cxt.getResources().getCompatibilityInfo()); 2541 } 2542 try { 2543 canvas.translate(0, -yoff); 2544 if (mTranslator != null) { 2545 mTranslator.translateCanvas(canvas); 2546 } 2547 canvas.setScreenDensity(scalingRequired ? mNoncompatDensity : 0); 2548 attachInfo.mSetIgnoreDirtyState = false; 2549 2550 mView.draw(canvas); 2551 2552 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2553 } finally { 2554 if (!attachInfo.mSetIgnoreDirtyState) { 2555 // Only clear the flag if it was not set during the mView.draw() call 2556 attachInfo.mIgnoreDirtyState = false; 2557 } 2558 } 2559 } finally { 2560 try { 2561 surface.unlockCanvasAndPost(canvas); 2562 } catch (IllegalArgumentException e) { 2563 Log.e(TAG, "Could not unlock surface", e); 2564 mLayoutRequested = true; // ask wm for a new surface next time. 2565 //noinspection ReturnInsideFinallyBlock 2566 return false; 2567 } 2568 2569 if (LOCAL_LOGV) { 2570 Log.v(TAG, "Surface " + surface + " unlockCanvasAndPost"); 2571 } 2572 } 2573 return true; 2574 } 2575 2576 /** 2577 * We want to draw a highlight around the current accessibility focused. 2578 * Since adding a style for all possible view is not a viable option we 2579 * have this specialized drawing method. 2580 * 2581 * Note: We are doing this here to be able to draw the highlight for 2582 * virtual views in addition to real ones. 2583 * 2584 * @param canvas The canvas on which to draw. 2585 */ 2586 private void drawAccessibilityFocusedDrawableIfNeeded(Canvas canvas) { 2587 final AccessibilityManager manager = AccessibilityManager.getInstance(mView.mContext); 2588 if (!manager.isEnabled() || !manager.isTouchExplorationEnabled()) { 2589 return; 2590 } 2591 2592 final View host = mAccessibilityFocusedHost; 2593 if (host == null || host.mAttachInfo == null) { 2594 return; 2595 } 2596 2597 final Drawable drawable = getAccessibilityFocusedDrawable(); 2598 if (drawable == null) { 2599 return; 2600 } 2601 2602 final AccessibilityNodeProvider provider = host.getAccessibilityNodeProvider(); 2603 final Rect bounds = mAttachInfo.mTmpInvalRect; 2604 if (provider == null) { 2605 host.getBoundsOnScreen(bounds); 2606 } else if (mAccessibilityFocusedVirtualView != null) { 2607 mAccessibilityFocusedVirtualView.getBoundsInScreen(bounds); 2608 } else { 2609 return; 2610 } 2611 2612 bounds.offset(-mAttachInfo.mWindowLeft, -mAttachInfo.mWindowTop); 2613 bounds.intersect(0, 0, mAttachInfo.mViewRootImpl.mWidth, mAttachInfo.mViewRootImpl.mHeight); 2614 drawable.setBounds(bounds); 2615 drawable.draw(canvas); 2616 } 2617 2618 private Drawable getAccessibilityFocusedDrawable() { 2619 if (mAttachInfo != null) { 2620 // Lazily load the accessibility focus drawable. 2621 if (mAttachInfo.mAccessibilityFocusDrawable == null) { 2622 TypedValue value = new TypedValue(); 2623 final boolean resolved = mView.mContext.getTheme().resolveAttribute( 2624 R.attr.accessibilityFocusedDrawable, value, true); 2625 if (resolved) { 2626 mAttachInfo.mAccessibilityFocusDrawable = 2627 mView.mContext.getDrawable(value.resourceId); 2628 } 2629 } 2630 return mAttachInfo.mAccessibilityFocusDrawable; 2631 } 2632 return null; 2633 } 2634 2635 /** 2636 * @hide 2637 */ 2638 public void setDrawDuringWindowsAnimating(boolean value) { 2639 mDrawDuringWindowsAnimating = value; 2640 if (value) { 2641 handleDispatchDoneAnimating(); 2642 } 2643 } 2644 2645 boolean scrollToRectOrFocus(Rect rectangle, boolean immediate) { 2646 final View.AttachInfo attachInfo = mAttachInfo; 2647 final Rect ci = attachInfo.mContentInsets; 2648 final Rect vi = attachInfo.mVisibleInsets; 2649 int scrollY = 0; 2650 boolean handled = false; 2651 2652 if (vi.left > ci.left || vi.top > ci.top 2653 || vi.right > ci.right || vi.bottom > ci.bottom) { 2654 // We'll assume that we aren't going to change the scroll 2655 // offset, since we want to avoid that unless it is actually 2656 // going to make the focus visible... otherwise we scroll 2657 // all over the place. 2658 scrollY = mScrollY; 2659 // We can be called for two different situations: during a draw, 2660 // to update the scroll position if the focus has changed (in which 2661 // case 'rectangle' is null), or in response to a 2662 // requestChildRectangleOnScreen() call (in which case 'rectangle' 2663 // is non-null and we just want to scroll to whatever that 2664 // rectangle is). 2665 final View focus = mView.findFocus(); 2666 if (focus == null) { 2667 return false; 2668 } 2669 View lastScrolledFocus = (mLastScrolledFocus != null) ? mLastScrolledFocus.get() : null; 2670 if (focus != lastScrolledFocus) { 2671 // If the focus has changed, then ignore any requests to scroll 2672 // to a rectangle; first we want to make sure the entire focus 2673 // view is visible. 2674 rectangle = null; 2675 } 2676 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Eval scroll: focus=" + focus 2677 + " rectangle=" + rectangle + " ci=" + ci 2678 + " vi=" + vi); 2679 if (focus == lastScrolledFocus && !mScrollMayChange && rectangle == null) { 2680 // Optimization: if the focus hasn't changed since last 2681 // time, and no layout has happened, then just leave things 2682 // as they are. 2683 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Keeping scroll y=" 2684 + mScrollY + " vi=" + vi.toShortString()); 2685 } else { 2686 // We need to determine if the currently focused view is 2687 // within the visible part of the window and, if not, apply 2688 // a pan so it can be seen. 2689 mLastScrolledFocus = new WeakReference<View>(focus); 2690 mScrollMayChange = false; 2691 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Need to scroll?"); 2692 // Try to find the rectangle from the focus view. 2693 if (focus.getGlobalVisibleRect(mVisRect, null)) { 2694 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Root w=" 2695 + mView.getWidth() + " h=" + mView.getHeight() 2696 + " ci=" + ci.toShortString() 2697 + " vi=" + vi.toShortString()); 2698 if (rectangle == null) { 2699 focus.getFocusedRect(mTempRect); 2700 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Focus " + focus 2701 + ": focusRect=" + mTempRect.toShortString()); 2702 if (mView instanceof ViewGroup) { 2703 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 2704 focus, mTempRect); 2705 } 2706 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2707 "Focus in window: focusRect=" 2708 + mTempRect.toShortString() 2709 + " visRect=" + mVisRect.toShortString()); 2710 } else { 2711 mTempRect.set(rectangle); 2712 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2713 "Request scroll to rect: " 2714 + mTempRect.toShortString() 2715 + " visRect=" + mVisRect.toShortString()); 2716 } 2717 if (mTempRect.intersect(mVisRect)) { 2718 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2719 "Focus window visible rect: " 2720 + mTempRect.toShortString()); 2721 if (mTempRect.height() > 2722 (mView.getHeight()-vi.top-vi.bottom)) { 2723 // If the focus simply is not going to fit, then 2724 // best is probably just to leave things as-is. 2725 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2726 "Too tall; leaving scrollY=" + scrollY); 2727 } else if ((mTempRect.top-scrollY) < vi.top) { 2728 scrollY -= vi.top - (mTempRect.top-scrollY); 2729 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2730 "Top covered; scrollY=" + scrollY); 2731 } else if ((mTempRect.bottom-scrollY) 2732 > (mView.getHeight()-vi.bottom)) { 2733 scrollY += (mTempRect.bottom-scrollY) 2734 - (mView.getHeight()-vi.bottom); 2735 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2736 "Bottom covered; scrollY=" + scrollY); 2737 } 2738 handled = true; 2739 } 2740 } 2741 } 2742 } 2743 2744 if (scrollY != mScrollY) { 2745 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Pan scroll changed: old=" 2746 + mScrollY + " , new=" + scrollY); 2747 if (!immediate && mResizeBuffer == null) { 2748 if (mScroller == null) { 2749 mScroller = new Scroller(mView.getContext()); 2750 } 2751 mScroller.startScroll(0, mScrollY, 0, scrollY-mScrollY); 2752 } else if (mScroller != null) { 2753 mScroller.abortAnimation(); 2754 } 2755 mScrollY = scrollY; 2756 } 2757 2758 return handled; 2759 } 2760 2761 /** 2762 * @hide 2763 */ 2764 public View getAccessibilityFocusedHost() { 2765 return mAccessibilityFocusedHost; 2766 } 2767 2768 /** 2769 * @hide 2770 */ 2771 public AccessibilityNodeInfo getAccessibilityFocusedVirtualView() { 2772 return mAccessibilityFocusedVirtualView; 2773 } 2774 2775 void setAccessibilityFocus(View view, AccessibilityNodeInfo node) { 2776 // If we have a virtual view with accessibility focus we need 2777 // to clear the focus and invalidate the virtual view bounds. 2778 if (mAccessibilityFocusedVirtualView != null) { 2779 2780 AccessibilityNodeInfo focusNode = mAccessibilityFocusedVirtualView; 2781 View focusHost = mAccessibilityFocusedHost; 2782 2783 // Wipe the state of the current accessibility focus since 2784 // the call into the provider to clear accessibility focus 2785 // will fire an accessibility event which will end up calling 2786 // this method and we want to have clean state when this 2787 // invocation happens. 2788 mAccessibilityFocusedHost = null; 2789 mAccessibilityFocusedVirtualView = null; 2790 2791 // Clear accessibility focus on the host after clearing state since 2792 // this method may be reentrant. 2793 focusHost.clearAccessibilityFocusNoCallbacks(); 2794 2795 AccessibilityNodeProvider provider = focusHost.getAccessibilityNodeProvider(); 2796 if (provider != null) { 2797 // Invalidate the area of the cleared accessibility focus. 2798 focusNode.getBoundsInParent(mTempRect); 2799 focusHost.invalidate(mTempRect); 2800 // Clear accessibility focus in the virtual node. 2801 final int virtualNodeId = AccessibilityNodeInfo.getVirtualDescendantId( 2802 focusNode.getSourceNodeId()); 2803 provider.performAction(virtualNodeId, 2804 AccessibilityNodeInfo.ACTION_CLEAR_ACCESSIBILITY_FOCUS, null); 2805 } 2806 focusNode.recycle(); 2807 } 2808 if (mAccessibilityFocusedHost != null) { 2809 // Clear accessibility focus in the view. 2810 mAccessibilityFocusedHost.clearAccessibilityFocusNoCallbacks(); 2811 } 2812 2813 // Set the new focus host and node. 2814 mAccessibilityFocusedHost = view; 2815 mAccessibilityFocusedVirtualView = node; 2816 } 2817 2818 @Override 2819 public void requestChildFocus(View child, View focused) { 2820 if (DEBUG_INPUT_RESIZE) { 2821 Log.v(TAG, "Request child focus: focus now " + focused); 2822 } 2823 checkThread(); 2824 scheduleTraversals(); 2825 } 2826 2827 @Override 2828 public void clearChildFocus(View child) { 2829 if (DEBUG_INPUT_RESIZE) { 2830 Log.v(TAG, "Clearing child focus"); 2831 } 2832 checkThread(); 2833 scheduleTraversals(); 2834 } 2835 2836 @Override 2837 public ViewParent getParentForAccessibility() { 2838 return null; 2839 } 2840 2841 @Override 2842 public void focusableViewAvailable(View v) { 2843 checkThread(); 2844 if (mView != null) { 2845 if (!mView.hasFocus()) { 2846 v.requestFocus(); 2847 } else { 2848 // the one case where will transfer focus away from the current one 2849 // is if the current view is a view group that prefers to give focus 2850 // to its children first AND the view is a descendant of it. 2851 View focused = mView.findFocus(); 2852 if (focused instanceof ViewGroup) { 2853 ViewGroup group = (ViewGroup) focused; 2854 if (group.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 2855 && isViewDescendantOf(v, focused)) { 2856 v.requestFocus(); 2857 } 2858 } 2859 } 2860 } 2861 } 2862 2863 @Override 2864 public void recomputeViewAttributes(View child) { 2865 checkThread(); 2866 if (mView == child) { 2867 mAttachInfo.mRecomputeGlobalAttributes = true; 2868 if (!mWillDrawSoon) { 2869 scheduleTraversals(); 2870 } 2871 } 2872 } 2873 2874 void dispatchDetachedFromWindow() { 2875 if (mView != null && mView.mAttachInfo != null) { 2876 mAttachInfo.mTreeObserver.dispatchOnWindowAttachedChange(false); 2877 mView.dispatchDetachedFromWindow(); 2878 } 2879 2880 mAccessibilityInteractionConnectionManager.ensureNoConnection(); 2881 mAccessibilityManager.removeAccessibilityStateChangeListener( 2882 mAccessibilityInteractionConnectionManager); 2883 removeSendWindowContentChangedCallback(); 2884 2885 destroyHardwareRenderer(); 2886 2887 setAccessibilityFocus(null, null); 2888 2889 mView.assignParent(null); 2890 mView = null; 2891 mAttachInfo.mRootView = null; 2892 2893 mSurface.release(); 2894 2895 if (mInputQueueCallback != null && mInputQueue != null) { 2896 mInputQueueCallback.onInputQueueDestroyed(mInputQueue); 2897 mInputQueue.dispose(); 2898 mInputQueueCallback = null; 2899 mInputQueue = null; 2900 } 2901 if (mInputEventReceiver != null) { 2902 mInputEventReceiver.dispose(); 2903 mInputEventReceiver = null; 2904 } 2905 try { 2906 mWindowSession.remove(mWindow); 2907 } catch (RemoteException e) { 2908 } 2909 2910 // Dispose the input channel after removing the window so the Window Manager 2911 // doesn't interpret the input channel being closed as an abnormal termination. 2912 if (mInputChannel != null) { 2913 mInputChannel.dispose(); 2914 mInputChannel = null; 2915 } 2916 2917 mDisplayManager.unregisterDisplayListener(mDisplayListener); 2918 2919 unscheduleTraversals(); 2920 } 2921 2922 void updateConfiguration(Configuration config, boolean force) { 2923 if (DEBUG_CONFIGURATION) Log.v(TAG, 2924 "Applying new config to window " 2925 + mWindowAttributes.getTitle() 2926 + ": " + config); 2927 2928 CompatibilityInfo ci = mDisplayAdjustments.getCompatibilityInfo(); 2929 if (!ci.equals(CompatibilityInfo.DEFAULT_COMPATIBILITY_INFO)) { 2930 config = new Configuration(config); 2931 ci.applyToConfiguration(mNoncompatDensity, config); 2932 } 2933 2934 synchronized (sConfigCallbacks) { 2935 for (int i=sConfigCallbacks.size()-1; i>=0; i--) { 2936 sConfigCallbacks.get(i).onConfigurationChanged(config); 2937 } 2938 } 2939 if (mView != null) { 2940 // At this point the resources have been updated to 2941 // have the most recent config, whatever that is. Use 2942 // the one in them which may be newer. 2943 config = mView.getResources().getConfiguration(); 2944 if (force || mLastConfiguration.diff(config) != 0) { 2945 final int lastLayoutDirection = mLastConfiguration.getLayoutDirection(); 2946 final int currentLayoutDirection = config.getLayoutDirection(); 2947 mLastConfiguration.setTo(config); 2948 if (lastLayoutDirection != currentLayoutDirection && 2949 mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 2950 mView.setLayoutDirection(currentLayoutDirection); 2951 } 2952 mView.dispatchConfigurationChanged(config); 2953 } 2954 } 2955 } 2956 2957 /** 2958 * Return true if child is an ancestor of parent, (or equal to the parent). 2959 */ 2960 public static boolean isViewDescendantOf(View child, View parent) { 2961 if (child == parent) { 2962 return true; 2963 } 2964 2965 final ViewParent theParent = child.getParent(); 2966 return (theParent instanceof ViewGroup) && isViewDescendantOf((View) theParent, parent); 2967 } 2968 2969 private static void forceLayout(View view) { 2970 view.forceLayout(); 2971 if (view instanceof ViewGroup) { 2972 ViewGroup group = (ViewGroup) view; 2973 final int count = group.getChildCount(); 2974 for (int i = 0; i < count; i++) { 2975 forceLayout(group.getChildAt(i)); 2976 } 2977 } 2978 } 2979 2980 private final static int MSG_INVALIDATE = 1; 2981 private final static int MSG_INVALIDATE_RECT = 2; 2982 private final static int MSG_DIE = 3; 2983 private final static int MSG_RESIZED = 4; 2984 private final static int MSG_RESIZED_REPORT = 5; 2985 private final static int MSG_WINDOW_FOCUS_CHANGED = 6; 2986 private final static int MSG_DISPATCH_INPUT_EVENT = 7; 2987 private final static int MSG_DISPATCH_APP_VISIBILITY = 8; 2988 private final static int MSG_DISPATCH_GET_NEW_SURFACE = 9; 2989 private final static int MSG_DISPATCH_KEY_FROM_IME = 11; 2990 private final static int MSG_FINISH_INPUT_CONNECTION = 12; 2991 private final static int MSG_CHECK_FOCUS = 13; 2992 private final static int MSG_CLOSE_SYSTEM_DIALOGS = 14; 2993 private final static int MSG_DISPATCH_DRAG_EVENT = 15; 2994 private final static int MSG_DISPATCH_DRAG_LOCATION_EVENT = 16; 2995 private final static int MSG_DISPATCH_SYSTEM_UI_VISIBILITY = 17; 2996 private final static int MSG_UPDATE_CONFIGURATION = 18; 2997 private final static int MSG_PROCESS_INPUT_EVENTS = 19; 2998 private final static int MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST = 21; 2999 private final static int MSG_DISPATCH_DONE_ANIMATING = 22; 3000 private final static int MSG_INVALIDATE_WORLD = 23; 3001 private final static int MSG_WINDOW_MOVED = 24; 3002 private final static int MSG_FLUSH_LAYER_UPDATES = 25; 3003 private final static int MSG_SYNTHESIZE_INPUT_EVENT = 26; 3004 3005 final class ViewRootHandler extends Handler { 3006 @Override 3007 public String getMessageName(Message message) { 3008 switch (message.what) { 3009 case MSG_INVALIDATE: 3010 return "MSG_INVALIDATE"; 3011 case MSG_INVALIDATE_RECT: 3012 return "MSG_INVALIDATE_RECT"; 3013 case MSG_DIE: 3014 return "MSG_DIE"; 3015 case MSG_RESIZED: 3016 return "MSG_RESIZED"; 3017 case MSG_RESIZED_REPORT: 3018 return "MSG_RESIZED_REPORT"; 3019 case MSG_WINDOW_FOCUS_CHANGED: 3020 return "MSG_WINDOW_FOCUS_CHANGED"; 3021 case MSG_DISPATCH_INPUT_EVENT: 3022 return "MSG_DISPATCH_INPUT_EVENT"; 3023 case MSG_DISPATCH_APP_VISIBILITY: 3024 return "MSG_DISPATCH_APP_VISIBILITY"; 3025 case MSG_DISPATCH_GET_NEW_SURFACE: 3026 return "MSG_DISPATCH_GET_NEW_SURFACE"; 3027 case MSG_DISPATCH_KEY_FROM_IME: 3028 return "MSG_DISPATCH_KEY_FROM_IME"; 3029 case MSG_FINISH_INPUT_CONNECTION: 3030 return "MSG_FINISH_INPUT_CONNECTION"; 3031 case MSG_CHECK_FOCUS: 3032 return "MSG_CHECK_FOCUS"; 3033 case MSG_CLOSE_SYSTEM_DIALOGS: 3034 return "MSG_CLOSE_SYSTEM_DIALOGS"; 3035 case MSG_DISPATCH_DRAG_EVENT: 3036 return "MSG_DISPATCH_DRAG_EVENT"; 3037 case MSG_DISPATCH_DRAG_LOCATION_EVENT: 3038 return "MSG_DISPATCH_DRAG_LOCATION_EVENT"; 3039 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: 3040 return "MSG_DISPATCH_SYSTEM_UI_VISIBILITY"; 3041 case MSG_UPDATE_CONFIGURATION: 3042 return "MSG_UPDATE_CONFIGURATION"; 3043 case MSG_PROCESS_INPUT_EVENTS: 3044 return "MSG_PROCESS_INPUT_EVENTS"; 3045 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: 3046 return "MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST"; 3047 case MSG_DISPATCH_DONE_ANIMATING: 3048 return "MSG_DISPATCH_DONE_ANIMATING"; 3049 case MSG_WINDOW_MOVED: 3050 return "MSG_WINDOW_MOVED"; 3051 case MSG_FLUSH_LAYER_UPDATES: 3052 return "MSG_FLUSH_LAYER_UPDATES"; 3053 case MSG_SYNTHESIZE_INPUT_EVENT: 3054 return "MSG_SYNTHESIZE_INPUT_EVENT"; 3055 } 3056 return super.getMessageName(message); 3057 } 3058 3059 @Override 3060 public void handleMessage(Message msg) { 3061 switch (msg.what) { 3062 case MSG_INVALIDATE: 3063 ((View) msg.obj).invalidate(); 3064 break; 3065 case MSG_INVALIDATE_RECT: 3066 final View.AttachInfo.InvalidateInfo info = (View.AttachInfo.InvalidateInfo) msg.obj; 3067 info.target.invalidate(info.left, info.top, info.right, info.bottom); 3068 info.recycle(); 3069 break; 3070 case MSG_PROCESS_INPUT_EVENTS: 3071 mProcessInputEventsScheduled = false; 3072 doProcessInputEvents(); 3073 break; 3074 case MSG_DISPATCH_APP_VISIBILITY: 3075 handleAppVisibility(msg.arg1 != 0); 3076 break; 3077 case MSG_DISPATCH_GET_NEW_SURFACE: 3078 handleGetNewSurface(); 3079 break; 3080 case MSG_RESIZED: { 3081 // Recycled in the fall through... 3082 SomeArgs args = (SomeArgs) msg.obj; 3083 if (mWinFrame.equals(args.arg1) 3084 && mPendingOverscanInsets.equals(args.arg5) 3085 && mPendingContentInsets.equals(args.arg2) 3086 && mPendingVisibleInsets.equals(args.arg3) 3087 && args.arg4 == null) { 3088 break; 3089 } 3090 } // fall through... 3091 case MSG_RESIZED_REPORT: 3092 if (mAdded) { 3093 SomeArgs args = (SomeArgs) msg.obj; 3094 3095 Configuration config = (Configuration) args.arg4; 3096 if (config != null) { 3097 updateConfiguration(config, false); 3098 } 3099 3100 mWinFrame.set((Rect) args.arg1); 3101 mPendingOverscanInsets.set((Rect) args.arg5); 3102 mPendingContentInsets.set((Rect) args.arg2); 3103 mPendingVisibleInsets.set((Rect) args.arg3); 3104 3105 args.recycle(); 3106 3107 if (msg.what == MSG_RESIZED_REPORT) { 3108 mReportNextDraw = true; 3109 } 3110 3111 if (mView != null) { 3112 forceLayout(mView); 3113 } 3114 3115 requestLayout(); 3116 } 3117 break; 3118 case MSG_WINDOW_MOVED: 3119 if (mAdded) { 3120 final int w = mWinFrame.width(); 3121 final int h = mWinFrame.height(); 3122 final int l = msg.arg1; 3123 final int t = msg.arg2; 3124 mWinFrame.left = l; 3125 mWinFrame.right = l + w; 3126 mWinFrame.top = t; 3127 mWinFrame.bottom = t + h; 3128 3129 if (mView != null) { 3130 forceLayout(mView); 3131 } 3132 requestLayout(); 3133 } 3134 break; 3135 case MSG_WINDOW_FOCUS_CHANGED: { 3136 if (mAdded) { 3137 boolean hasWindowFocus = msg.arg1 != 0; 3138 mAttachInfo.mHasWindowFocus = hasWindowFocus; 3139 3140 profileRendering(hasWindowFocus); 3141 3142 if (hasWindowFocus) { 3143 boolean inTouchMode = msg.arg2 != 0; 3144 ensureTouchModeLocally(inTouchMode); 3145 3146 if (mAttachInfo.mHardwareRenderer != null && mSurface.isValid()){ 3147 mFullRedrawNeeded = true; 3148 try { 3149 mAttachInfo.mHardwareRenderer.initializeIfNeeded( 3150 mWidth, mHeight, mSurface, 3151 mAttachInfo.mRootView.getResources().getDisplayMetrics()); 3152 } catch (OutOfResourcesException e) { 3153 Log.e(TAG, "OutOfResourcesException locking surface", e); 3154 try { 3155 if (!mWindowSession.outOfMemory(mWindow)) { 3156 Slog.w(TAG, "No processes killed for memory; killing self"); 3157 Process.killProcess(Process.myPid()); 3158 } 3159 } catch (RemoteException ex) { 3160 } 3161 // Retry in a bit. 3162 sendMessageDelayed(obtainMessage(msg.what, msg.arg1, msg.arg2), 500); 3163 return; 3164 } 3165 } 3166 } 3167 3168 mLastWasImTarget = WindowManager.LayoutParams 3169 .mayUseInputMethod(mWindowAttributes.flags); 3170 3171 InputMethodManager imm = InputMethodManager.peekInstance(); 3172 if (mView != null) { 3173 if (hasWindowFocus && imm != null && mLastWasImTarget && 3174 !isInLocalFocusMode()) { 3175 imm.startGettingWindowFocus(mView); 3176 } 3177 mAttachInfo.mKeyDispatchState.reset(); 3178 mView.dispatchWindowFocusChanged(hasWindowFocus); 3179 mAttachInfo.mTreeObserver.dispatchOnWindowFocusChange(hasWindowFocus); 3180 } 3181 3182 // Note: must be done after the focus change callbacks, 3183 // so all of the view state is set up correctly. 3184 if (hasWindowFocus) { 3185 if (imm != null && mLastWasImTarget && !isInLocalFocusMode()) { 3186 imm.onWindowFocus(mView, mView.findFocus(), 3187 mWindowAttributes.softInputMode, 3188 !mHasHadWindowFocus, mWindowAttributes.flags); 3189 } 3190 // Clear the forward bit. We can just do this directly, since 3191 // the window manager doesn't care about it. 3192 mWindowAttributes.softInputMode &= 3193 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3194 ((WindowManager.LayoutParams)mView.getLayoutParams()) 3195 .softInputMode &= 3196 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3197 mHasHadWindowFocus = true; 3198 } 3199 3200 if (mView != null && mAccessibilityManager.isEnabled()) { 3201 if (hasWindowFocus) { 3202 mView.sendAccessibilityEvent( 3203 AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 3204 } 3205 } 3206 } 3207 } break; 3208 case MSG_DIE: 3209 doDie(); 3210 break; 3211 case MSG_DISPATCH_INPUT_EVENT: { 3212 SomeArgs args = (SomeArgs)msg.obj; 3213 InputEvent event = (InputEvent)args.arg1; 3214 InputEventReceiver receiver = (InputEventReceiver)args.arg2; 3215 enqueueInputEvent(event, receiver, 0, true); 3216 args.recycle(); 3217 } break; 3218 case MSG_SYNTHESIZE_INPUT_EVENT: { 3219 InputEvent event = (InputEvent)msg.obj; 3220 enqueueInputEvent(event, null, QueuedInputEvent.FLAG_UNHANDLED, true); 3221 } break; 3222 case MSG_DISPATCH_KEY_FROM_IME: { 3223 if (LOCAL_LOGV) Log.v( 3224 TAG, "Dispatching key " 3225 + msg.obj + " from IME to " + mView); 3226 KeyEvent event = (KeyEvent)msg.obj; 3227 if ((event.getFlags()&KeyEvent.FLAG_FROM_SYSTEM) != 0) { 3228 // The IME is trying to say this event is from the 3229 // system! Bad bad bad! 3230 //noinspection UnusedAssignment 3231 event = KeyEvent.changeFlags(event, event.getFlags() & 3232 ~KeyEvent.FLAG_FROM_SYSTEM); 3233 } 3234 enqueueInputEvent(event, null, QueuedInputEvent.FLAG_DELIVER_POST_IME, true); 3235 } break; 3236 case MSG_FINISH_INPUT_CONNECTION: { 3237 InputMethodManager imm = InputMethodManager.peekInstance(); 3238 if (imm != null) { 3239 imm.reportFinishInputConnection((InputConnection)msg.obj); 3240 } 3241 } break; 3242 case MSG_CHECK_FOCUS: { 3243 InputMethodManager imm = InputMethodManager.peekInstance(); 3244 if (imm != null) { 3245 imm.checkFocus(); 3246 } 3247 } break; 3248 case MSG_CLOSE_SYSTEM_DIALOGS: { 3249 if (mView != null) { 3250 mView.onCloseSystemDialogs((String)msg.obj); 3251 } 3252 } break; 3253 case MSG_DISPATCH_DRAG_EVENT: 3254 case MSG_DISPATCH_DRAG_LOCATION_EVENT: { 3255 DragEvent event = (DragEvent)msg.obj; 3256 event.mLocalState = mLocalDragState; // only present when this app called startDrag() 3257 handleDragEvent(event); 3258 } break; 3259 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: { 3260 handleDispatchSystemUiVisibilityChanged((SystemUiVisibilityInfo) msg.obj); 3261 } break; 3262 case MSG_UPDATE_CONFIGURATION: { 3263 Configuration config = (Configuration)msg.obj; 3264 if (config.isOtherSeqNewer(mLastConfiguration)) { 3265 config = mLastConfiguration; 3266 } 3267 updateConfiguration(config, false); 3268 } break; 3269 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: { 3270 setAccessibilityFocus(null, null); 3271 } break; 3272 case MSG_DISPATCH_DONE_ANIMATING: { 3273 handleDispatchDoneAnimating(); 3274 } break; 3275 case MSG_INVALIDATE_WORLD: { 3276 if (mView != null) { 3277 invalidateWorld(mView); 3278 } 3279 } break; 3280 case MSG_FLUSH_LAYER_UPDATES: { 3281 flushHardwareLayerUpdates(); 3282 } break; 3283 } 3284 } 3285 } 3286 3287 final ViewRootHandler mHandler = new ViewRootHandler(); 3288 3289 /** 3290 * Something in the current window tells us we need to change the touch mode. For 3291 * example, we are not in touch mode, and the user touches the screen. 3292 * 3293 * If the touch mode has changed, tell the window manager, and handle it locally. 3294 * 3295 * @param inTouchMode Whether we want to be in touch mode. 3296 * @return True if the touch mode changed and focus changed was changed as a result 3297 */ 3298 boolean ensureTouchMode(boolean inTouchMode) { 3299 if (DBG) Log.d("touchmode", "ensureTouchMode(" + inTouchMode + "), current " 3300 + "touch mode is " + mAttachInfo.mInTouchMode); 3301 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3302 3303 // tell the window manager 3304 try { 3305 if (!isInLocalFocusMode()) { 3306 mWindowSession.setInTouchMode(inTouchMode); 3307 } 3308 } catch (RemoteException e) { 3309 throw new RuntimeException(e); 3310 } 3311 3312 // handle the change 3313 return ensureTouchModeLocally(inTouchMode); 3314 } 3315 3316 /** 3317 * Ensure that the touch mode for this window is set, and if it is changing, 3318 * take the appropriate action. 3319 * @param inTouchMode Whether we want to be in touch mode. 3320 * @return True if the touch mode changed and focus changed was changed as a result 3321 */ 3322 private boolean ensureTouchModeLocally(boolean inTouchMode) { 3323 if (DBG) Log.d("touchmode", "ensureTouchModeLocally(" + inTouchMode + "), current " 3324 + "touch mode is " + mAttachInfo.mInTouchMode); 3325 3326 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3327 3328 mAttachInfo.mInTouchMode = inTouchMode; 3329 mAttachInfo.mTreeObserver.dispatchOnTouchModeChanged(inTouchMode); 3330 3331 return (inTouchMode) ? enterTouchMode() : leaveTouchMode(); 3332 } 3333 3334 private boolean enterTouchMode() { 3335 if (mView != null && mView.hasFocus()) { 3336 // note: not relying on mFocusedView here because this could 3337 // be when the window is first being added, and mFocused isn't 3338 // set yet. 3339 final View focused = mView.findFocus(); 3340 if (focused != null && !focused.isFocusableInTouchMode()) { 3341 final ViewGroup ancestorToTakeFocus = findAncestorToTakeFocusInTouchMode(focused); 3342 if (ancestorToTakeFocus != null) { 3343 // there is an ancestor that wants focus after its 3344 // descendants that is focusable in touch mode.. give it 3345 // focus 3346 return ancestorToTakeFocus.requestFocus(); 3347 } else { 3348 // There's nothing to focus. Clear and propagate through the 3349 // hierarchy, but don't attempt to place new focus. 3350 focused.clearFocusInternal(null, true, false); 3351 return true; 3352 } 3353 } 3354 } 3355 return false; 3356 } 3357 3358 /** 3359 * Find an ancestor of focused that wants focus after its descendants and is 3360 * focusable in touch mode. 3361 * @param focused The currently focused view. 3362 * @return An appropriate view, or null if no such view exists. 3363 */ 3364 private static ViewGroup findAncestorToTakeFocusInTouchMode(View focused) { 3365 ViewParent parent = focused.getParent(); 3366 while (parent instanceof ViewGroup) { 3367 final ViewGroup vgParent = (ViewGroup) parent; 3368 if (vgParent.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 3369 && vgParent.isFocusableInTouchMode()) { 3370 return vgParent; 3371 } 3372 if (vgParent.isRootNamespace()) { 3373 return null; 3374 } else { 3375 parent = vgParent.getParent(); 3376 } 3377 } 3378 return null; 3379 } 3380 3381 private boolean leaveTouchMode() { 3382 if (mView != null) { 3383 if (mView.hasFocus()) { 3384 View focusedView = mView.findFocus(); 3385 if (!(focusedView instanceof ViewGroup)) { 3386 // some view has focus, let it keep it 3387 return false; 3388 } else if (((ViewGroup) focusedView).getDescendantFocusability() != 3389 ViewGroup.FOCUS_AFTER_DESCENDANTS) { 3390 // some view group has focus, and doesn't prefer its children 3391 // over itself for focus, so let them keep it. 3392 return false; 3393 } 3394 } 3395 3396 // find the best view to give focus to in this brave new non-touch-mode 3397 // world 3398 final View focused = focusSearch(null, View.FOCUS_DOWN); 3399 if (focused != null) { 3400 return focused.requestFocus(View.FOCUS_DOWN); 3401 } 3402 } 3403 return false; 3404 } 3405 3406 /** 3407 * Base class for implementing a stage in the chain of responsibility 3408 * for processing input events. 3409 * <p> 3410 * Events are delivered to the stage by the {@link #deliver} method. The stage 3411 * then has the choice of finishing the event or forwarding it to the next stage. 3412 * </p> 3413 */ 3414 abstract class InputStage { 3415 private final InputStage mNext; 3416 3417 protected static final int FORWARD = 0; 3418 protected static final int FINISH_HANDLED = 1; 3419 protected static final int FINISH_NOT_HANDLED = 2; 3420 3421 /** 3422 * Creates an input stage. 3423 * @param next The next stage to which events should be forwarded. 3424 */ 3425 public InputStage(InputStage next) { 3426 mNext = next; 3427 } 3428 3429 /** 3430 * Delivers an event to be processed. 3431 */ 3432 public final void deliver(QueuedInputEvent q) { 3433 if ((q.mFlags & QueuedInputEvent.FLAG_FINISHED) != 0) { 3434 forward(q); 3435 } else if (shouldDropInputEvent(q)) { 3436 finish(q, false); 3437 } else { 3438 apply(q, onProcess(q)); 3439 } 3440 } 3441 3442 /** 3443 * Marks the the input event as finished then forwards it to the next stage. 3444 */ 3445 protected void finish(QueuedInputEvent q, boolean handled) { 3446 q.mFlags |= QueuedInputEvent.FLAG_FINISHED; 3447 if (handled) { 3448 q.mFlags |= QueuedInputEvent.FLAG_FINISHED_HANDLED; 3449 } 3450 forward(q); 3451 } 3452 3453 /** 3454 * Forwards the event to the next stage. 3455 */ 3456 protected void forward(QueuedInputEvent q) { 3457 onDeliverToNext(q); 3458 } 3459 3460 /** 3461 * Applies a result code from {@link #onProcess} to the specified event. 3462 */ 3463 protected void apply(QueuedInputEvent q, int result) { 3464 if (result == FORWARD) { 3465 forward(q); 3466 } else if (result == FINISH_HANDLED) { 3467 finish(q, true); 3468 } else if (result == FINISH_NOT_HANDLED) { 3469 finish(q, false); 3470 } else { 3471 throw new IllegalArgumentException("Invalid result: " + result); 3472 } 3473 } 3474 3475 /** 3476 * Called when an event is ready to be processed. 3477 * @return A result code indicating how the event was handled. 3478 */ 3479 protected int onProcess(QueuedInputEvent q) { 3480 return FORWARD; 3481 } 3482 3483 /** 3484 * Called when an event is being delivered to the next stage. 3485 */ 3486 protected void onDeliverToNext(QueuedInputEvent q) { 3487 if (DEBUG_INPUT_STAGES) { 3488 Log.v(TAG, "Done with " + getClass().getSimpleName() + ". " + q); 3489 } 3490 if (mNext != null) { 3491 mNext.deliver(q); 3492 } else { 3493 finishInputEvent(q); 3494 } 3495 } 3496 3497 protected boolean shouldDropInputEvent(QueuedInputEvent q) { 3498 if (mView == null || !mAdded) { 3499 Slog.w(TAG, "Dropping event due to root view being removed: " + q.mEvent); 3500 return true; 3501 } else if (!mAttachInfo.mHasWindowFocus && 3502 !q.mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER) && 3503 !isTerminalInputEvent(q.mEvent)) { 3504 // If this is a focused event and the window doesn't currently have input focus, 3505 // then drop this event. This could be an event that came back from the previous 3506 // stage but the window has lost focus in the meantime. 3507 Slog.w(TAG, "Dropping event due to no window focus: " + q.mEvent); 3508 return true; 3509 } 3510 return false; 3511 } 3512 3513 void dump(String prefix, PrintWriter writer) { 3514 if (mNext != null) { 3515 mNext.dump(prefix, writer); 3516 } 3517 } 3518 } 3519 3520 /** 3521 * Base class for implementing an input pipeline stage that supports 3522 * asynchronous and out-of-order processing of input events. 3523 * <p> 3524 * In addition to what a normal input stage can do, an asynchronous 3525 * input stage may also defer an input event that has been delivered to it 3526 * and finish or forward it later. 3527 * </p> 3528 */ 3529 abstract class AsyncInputStage extends InputStage { 3530 private final String mTraceCounter; 3531 3532 private QueuedInputEvent mQueueHead; 3533 private QueuedInputEvent mQueueTail; 3534 private int mQueueLength; 3535 3536 protected static final int DEFER = 3; 3537 3538 /** 3539 * Creates an asynchronous input stage. 3540 * @param next The next stage to which events should be forwarded. 3541 * @param traceCounter The name of a counter to record the size of 3542 * the queue of pending events. 3543 */ 3544 public AsyncInputStage(InputStage next, String traceCounter) { 3545 super(next); 3546 mTraceCounter = traceCounter; 3547 } 3548 3549 /** 3550 * Marks the event as deferred, which is to say that it will be handled 3551 * asynchronously. The caller is responsible for calling {@link #forward} 3552 * or {@link #finish} later when it is done handling the event. 3553 */ 3554 protected void defer(QueuedInputEvent q) { 3555 q.mFlags |= QueuedInputEvent.FLAG_DEFERRED; 3556 enqueue(q); 3557 } 3558 3559 @Override 3560 protected void forward(QueuedInputEvent q) { 3561 // Clear the deferred flag. 3562 q.mFlags &= ~QueuedInputEvent.FLAG_DEFERRED; 3563 3564 // Fast path if the queue is empty. 3565 QueuedInputEvent curr = mQueueHead; 3566 if (curr == null) { 3567 super.forward(q); 3568 return; 3569 } 3570 3571 // Determine whether the event must be serialized behind any others 3572 // before it can be delivered to the next stage. This is done because 3573 // deferred events might be handled out of order by the stage. 3574 final int deviceId = q.mEvent.getDeviceId(); 3575 QueuedInputEvent prev = null; 3576 boolean blocked = false; 3577 while (curr != null && curr != q) { 3578 if (!blocked && deviceId == curr.mEvent.getDeviceId()) { 3579 blocked = true; 3580 } 3581 prev = curr; 3582 curr = curr.mNext; 3583 } 3584 3585 // If the event is blocked, then leave it in the queue to be delivered later. 3586 // Note that the event might not yet be in the queue if it was not previously 3587 // deferred so we will enqueue it if needed. 3588 if (blocked) { 3589 if (curr == null) { 3590 enqueue(q); 3591 } 3592 return; 3593 } 3594 3595 // The event is not blocked. Deliver it immediately. 3596 if (curr != null) { 3597 curr = curr.mNext; 3598 dequeue(q, prev); 3599 } 3600 super.forward(q); 3601 3602 // Dequeuing this event may have unblocked successors. Deliver them. 3603 while (curr != null) { 3604 if (deviceId == curr.mEvent.getDeviceId()) { 3605 if ((curr.mFlags & QueuedInputEvent.FLAG_DEFERRED) != 0) { 3606 break; 3607 } 3608 QueuedInputEvent next = curr.mNext; 3609 dequeue(curr, prev); 3610 super.forward(curr); 3611 curr = next; 3612 } else { 3613 prev = curr; 3614 curr = curr.mNext; 3615 } 3616 } 3617 } 3618 3619 @Override 3620 protected void apply(QueuedInputEvent q, int result) { 3621 if (result == DEFER) { 3622 defer(q); 3623 } else { 3624 super.apply(q, result); 3625 } 3626 } 3627 3628 private void enqueue(QueuedInputEvent q) { 3629 if (mQueueTail == null) { 3630 mQueueHead = q; 3631 mQueueTail = q; 3632 } else { 3633 mQueueTail.mNext = q; 3634 mQueueTail = q; 3635 } 3636 3637 mQueueLength += 1; 3638 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 3639 } 3640 3641 private void dequeue(QueuedInputEvent q, QueuedInputEvent prev) { 3642 if (prev == null) { 3643 mQueueHead = q.mNext; 3644 } else { 3645 prev.mNext = q.mNext; 3646 } 3647 if (mQueueTail == q) { 3648 mQueueTail = prev; 3649 } 3650 q.mNext = null; 3651 3652 mQueueLength -= 1; 3653 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 3654 } 3655 3656 @Override 3657 void dump(String prefix, PrintWriter writer) { 3658 writer.print(prefix); 3659 writer.print(getClass().getName()); 3660 writer.print(": mQueueLength="); 3661 writer.println(mQueueLength); 3662 3663 super.dump(prefix, writer); 3664 } 3665 } 3666 3667 /** 3668 * Delivers pre-ime input events to a native activity. 3669 * Does not support pointer events. 3670 */ 3671 final class NativePreImeInputStage extends AsyncInputStage 3672 implements InputQueue.FinishedInputEventCallback { 3673 public NativePreImeInputStage(InputStage next, String traceCounter) { 3674 super(next, traceCounter); 3675 } 3676 3677 @Override 3678 protected int onProcess(QueuedInputEvent q) { 3679 if (mInputQueue != null && q.mEvent instanceof KeyEvent) { 3680 mInputQueue.sendInputEvent(q.mEvent, q, true, this); 3681 return DEFER; 3682 } 3683 return FORWARD; 3684 } 3685 3686 @Override 3687 public void onFinishedInputEvent(Object token, boolean handled) { 3688 QueuedInputEvent q = (QueuedInputEvent)token; 3689 if (handled) { 3690 finish(q, true); 3691 return; 3692 } 3693 forward(q); 3694 } 3695 } 3696 3697 /** 3698 * Delivers pre-ime input events to the view hierarchy. 3699 * Does not support pointer events. 3700 */ 3701 final class ViewPreImeInputStage extends InputStage { 3702 public ViewPreImeInputStage(InputStage next) { 3703 super(next); 3704 } 3705 3706 @Override 3707 protected int onProcess(QueuedInputEvent q) { 3708 if (q.mEvent instanceof KeyEvent) { 3709 return processKeyEvent(q); 3710 } 3711 return FORWARD; 3712 } 3713 3714 private int processKeyEvent(QueuedInputEvent q) { 3715 final KeyEvent event = (KeyEvent)q.mEvent; 3716 if (mView.dispatchKeyEventPreIme(event)) { 3717 return FINISH_HANDLED; 3718 } 3719 return FORWARD; 3720 } 3721 } 3722 3723 /** 3724 * Delivers input events to the ime. 3725 * Does not support pointer events. 3726 */ 3727 final class ImeInputStage extends AsyncInputStage 3728 implements InputMethodManager.FinishedInputEventCallback { 3729 public ImeInputStage(InputStage next, String traceCounter) { 3730 super(next, traceCounter); 3731 } 3732 3733 @Override 3734 protected int onProcess(QueuedInputEvent q) { 3735 if (mLastWasImTarget && !isInLocalFocusMode()) { 3736 InputMethodManager imm = InputMethodManager.peekInstance(); 3737 if (imm != null) { 3738 final InputEvent event = q.mEvent; 3739 if (DEBUG_IMF) Log.v(TAG, "Sending input event to IME: " + event); 3740 int result = imm.dispatchInputEvent(event, q, this, mHandler); 3741 if (result == InputMethodManager.DISPATCH_HANDLED) { 3742 return FINISH_HANDLED; 3743 } else if (result == InputMethodManager.DISPATCH_NOT_HANDLED) { 3744 // The IME could not handle it, so skip along to the next InputStage 3745 return FORWARD; 3746 } else { 3747 return DEFER; // callback will be invoked later 3748 } 3749 } 3750 } 3751 return FORWARD; 3752 } 3753 3754 @Override 3755 public void onFinishedInputEvent(Object token, boolean handled) { 3756 QueuedInputEvent q = (QueuedInputEvent)token; 3757 if (handled) { 3758 finish(q, true); 3759 return; 3760 } 3761 forward(q); 3762 } 3763 } 3764 3765 /** 3766 * Performs early processing of post-ime input events. 3767 */ 3768 final class EarlyPostImeInputStage extends InputStage { 3769 public EarlyPostImeInputStage(InputStage next) { 3770 super(next); 3771 } 3772 3773 @Override 3774 protected int onProcess(QueuedInputEvent q) { 3775 if (q.mEvent instanceof KeyEvent) { 3776 return processKeyEvent(q); 3777 } else { 3778 final int source = q.mEvent.getSource(); 3779 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 3780 return processPointerEvent(q); 3781 } 3782 } 3783 return FORWARD; 3784 } 3785 3786 private int processKeyEvent(QueuedInputEvent q) { 3787 final KeyEvent event = (KeyEvent)q.mEvent; 3788 3789 // If the key's purpose is to exit touch mode then we consume it 3790 // and consider it handled. 3791 if (checkForLeavingTouchModeAndConsume(event)) { 3792 return FINISH_HANDLED; 3793 } 3794 3795 // Make sure the fallback event policy sees all keys that will be 3796 // delivered to the view hierarchy. 3797 mFallbackEventHandler.preDispatchKeyEvent(event); 3798 return FORWARD; 3799 } 3800 3801 private int processPointerEvent(QueuedInputEvent q) { 3802 final MotionEvent event = (MotionEvent)q.mEvent; 3803 3804 // Translate the pointer event for compatibility, if needed. 3805 if (mTranslator != null) { 3806 mTranslator.translateEventInScreenToAppWindow(event); 3807 } 3808 3809 // Enter touch mode on down or scroll. 3810 final int action = event.getAction(); 3811 if (action == MotionEvent.ACTION_DOWN || action == MotionEvent.ACTION_SCROLL) { 3812 ensureTouchMode(true); 3813 } 3814 3815 // Offset the scroll position. 3816 if (mCurScrollY != 0) { 3817 event.offsetLocation(0, mCurScrollY); 3818 } 3819 3820 // Remember the touch position for possible drag-initiation. 3821 if (event.isTouchEvent()) { 3822 mLastTouchPoint.x = event.getRawX(); 3823 mLastTouchPoint.y = event.getRawY(); 3824 } 3825 return FORWARD; 3826 } 3827 } 3828 3829 /** 3830 * Delivers post-ime input events to a native activity. 3831 */ 3832 final class NativePostImeInputStage extends AsyncInputStage 3833 implements InputQueue.FinishedInputEventCallback { 3834 public NativePostImeInputStage(InputStage next, String traceCounter) { 3835 super(next, traceCounter); 3836 } 3837 3838 @Override 3839 protected int onProcess(QueuedInputEvent q) { 3840 if (mInputQueue != null) { 3841 mInputQueue.sendInputEvent(q.mEvent, q, false, this); 3842 return DEFER; 3843 } 3844 return FORWARD; 3845 } 3846 3847 @Override 3848 public void onFinishedInputEvent(Object token, boolean handled) { 3849 QueuedInputEvent q = (QueuedInputEvent)token; 3850 if (handled) { 3851 finish(q, true); 3852 return; 3853 } 3854 forward(q); 3855 } 3856 } 3857 3858 /** 3859 * Delivers post-ime input events to the view hierarchy. 3860 */ 3861 final class ViewPostImeInputStage extends InputStage { 3862 public ViewPostImeInputStage(InputStage next) { 3863 super(next); 3864 } 3865 3866 @Override 3867 protected int onProcess(QueuedInputEvent q) { 3868 if (q.mEvent instanceof KeyEvent) { 3869 return processKeyEvent(q); 3870 } else { 3871 // If delivering a new non-key event, make sure the window is 3872 // now allowed to start updating. 3873 handleDispatchDoneAnimating(); 3874 final int source = q.mEvent.getSource(); 3875 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 3876 return processPointerEvent(q); 3877 } else if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 3878 return processTrackballEvent(q); 3879 } else { 3880 return processGenericMotionEvent(q); 3881 } 3882 } 3883 } 3884 3885 @Override 3886 protected void onDeliverToNext(QueuedInputEvent q) { 3887 if (mUnbufferedInputDispatch 3888 && q.mEvent instanceof MotionEvent 3889 && ((MotionEvent)q.mEvent).isTouchEvent() 3890 && isTerminalInputEvent(q.mEvent)) { 3891 mUnbufferedInputDispatch = false; 3892 scheduleConsumeBatchedInput(); 3893 } 3894 super.onDeliverToNext(q); 3895 } 3896 3897 private int processKeyEvent(QueuedInputEvent q) { 3898 final KeyEvent event = (KeyEvent)q.mEvent; 3899 3900 if (event.getAction() != KeyEvent.ACTION_UP) { 3901 // If delivering a new key event, make sure the window is 3902 // now allowed to start updating. 3903 handleDispatchDoneAnimating(); 3904 } 3905 3906 // Deliver the key to the view hierarchy. 3907 if (mView.dispatchKeyEvent(event)) { 3908 return FINISH_HANDLED; 3909 } 3910 3911 if (shouldDropInputEvent(q)) { 3912 return FINISH_NOT_HANDLED; 3913 } 3914 3915 // If the Control modifier is held, try to interpret the key as a shortcut. 3916 if (event.getAction() == KeyEvent.ACTION_DOWN 3917 && event.isCtrlPressed() 3918 && event.getRepeatCount() == 0 3919 && !KeyEvent.isModifierKey(event.getKeyCode())) { 3920 if (mView.dispatchKeyShortcutEvent(event)) { 3921 return FINISH_HANDLED; 3922 } 3923 if (shouldDropInputEvent(q)) { 3924 return FINISH_NOT_HANDLED; 3925 } 3926 } 3927 3928 // Apply the fallback event policy. 3929 if (mFallbackEventHandler.dispatchKeyEvent(event)) { 3930 return FINISH_HANDLED; 3931 } 3932 if (shouldDropInputEvent(q)) { 3933 return FINISH_NOT_HANDLED; 3934 } 3935 3936 // Handle automatic focus changes. 3937 if (event.getAction() == KeyEvent.ACTION_DOWN) { 3938 int direction = 0; 3939 switch (event.getKeyCode()) { 3940 case KeyEvent.KEYCODE_DPAD_LEFT: 3941 if (event.hasNoModifiers()) { 3942 direction = View.FOCUS_LEFT; 3943 } 3944 break; 3945 case KeyEvent.KEYCODE_DPAD_RIGHT: 3946 if (event.hasNoModifiers()) { 3947 direction = View.FOCUS_RIGHT; 3948 } 3949 break; 3950 case KeyEvent.KEYCODE_DPAD_UP: 3951 if (event.hasNoModifiers()) { 3952 direction = View.FOCUS_UP; 3953 } 3954 break; 3955 case KeyEvent.KEYCODE_DPAD_DOWN: 3956 if (event.hasNoModifiers()) { 3957 direction = View.FOCUS_DOWN; 3958 } 3959 break; 3960 case KeyEvent.KEYCODE_TAB: 3961 if (event.hasNoModifiers()) { 3962 direction = View.FOCUS_FORWARD; 3963 } else if (event.hasModifiers(KeyEvent.META_SHIFT_ON)) { 3964 direction = View.FOCUS_BACKWARD; 3965 } 3966 break; 3967 } 3968 if (direction != 0) { 3969 View focused = mView.findFocus(); 3970 if (focused != null) { 3971 View v = focused.focusSearch(direction); 3972 if (v != null && v != focused) { 3973 // do the math the get the interesting rect 3974 // of previous focused into the coord system of 3975 // newly focused view 3976 focused.getFocusedRect(mTempRect); 3977 if (mView instanceof ViewGroup) { 3978 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 3979 focused, mTempRect); 3980 ((ViewGroup) mView).offsetRectIntoDescendantCoords( 3981 v, mTempRect); 3982 } 3983 if (v.requestFocus(direction, mTempRect)) { 3984 playSoundEffect(SoundEffectConstants 3985 .getContantForFocusDirection(direction)); 3986 return FINISH_HANDLED; 3987 } 3988 } 3989 3990 // Give the focused view a last chance to handle the dpad key. 3991 if (mView.dispatchUnhandledMove(focused, direction)) { 3992 return FINISH_HANDLED; 3993 } 3994 } else { 3995 // find the best view to give focus to in this non-touch-mode with no-focus 3996 View v = focusSearch(null, direction); 3997 if (v != null && v.requestFocus(direction)) { 3998 return FINISH_HANDLED; 3999 } 4000 } 4001 } 4002 } 4003 return FORWARD; 4004 } 4005 4006 private int processPointerEvent(QueuedInputEvent q) { 4007 final MotionEvent event = (MotionEvent)q.mEvent; 4008 4009 mAttachInfo.mUnbufferedDispatchRequested = false; 4010 boolean handled = mView.dispatchPointerEvent(event); 4011 if (mAttachInfo.mUnbufferedDispatchRequested && !mUnbufferedInputDispatch) { 4012 mUnbufferedInputDispatch = true; 4013 if (mConsumeBatchedInputScheduled) { 4014 scheduleConsumeBatchedInputImmediately(); 4015 } 4016 } 4017 return handled ? FINISH_HANDLED : FORWARD; 4018 } 4019 4020 private int processTrackballEvent(QueuedInputEvent q) { 4021 final MotionEvent event = (MotionEvent)q.mEvent; 4022 4023 if (mView.dispatchTrackballEvent(event)) { 4024 return FINISH_HANDLED; 4025 } 4026 return FORWARD; 4027 } 4028 4029 private int processGenericMotionEvent(QueuedInputEvent q) { 4030 final MotionEvent event = (MotionEvent)q.mEvent; 4031 4032 // Deliver the event to the view. 4033 if (mView.dispatchGenericMotionEvent(event)) { 4034 return FINISH_HANDLED; 4035 } 4036 return FORWARD; 4037 } 4038 } 4039 4040 /** 4041 * Performs synthesis of new input events from unhandled input events. 4042 */ 4043 final class SyntheticInputStage extends InputStage { 4044 private final SyntheticTrackballHandler mTrackball = new SyntheticTrackballHandler(); 4045 private final SyntheticJoystickHandler mJoystick = new SyntheticJoystickHandler(); 4046 private final SyntheticTouchNavigationHandler mTouchNavigation = 4047 new SyntheticTouchNavigationHandler(); 4048 private final SyntheticKeyboardHandler mKeyboard = new SyntheticKeyboardHandler(); 4049 4050 public SyntheticInputStage() { 4051 super(null); 4052 } 4053 4054 @Override 4055 protected int onProcess(QueuedInputEvent q) { 4056 q.mFlags |= QueuedInputEvent.FLAG_RESYNTHESIZED; 4057 if (q.mEvent instanceof MotionEvent) { 4058 final MotionEvent event = (MotionEvent)q.mEvent; 4059 final int source = event.getSource(); 4060 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 4061 mTrackball.process(event); 4062 return FINISH_HANDLED; 4063 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 4064 mJoystick.process(event); 4065 return FINISH_HANDLED; 4066 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 4067 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 4068 mTouchNavigation.process(event); 4069 return FINISH_HANDLED; 4070 } 4071 } else if ((q.mFlags & QueuedInputEvent.FLAG_UNHANDLED) != 0) { 4072 mKeyboard.process((KeyEvent)q.mEvent); 4073 return FINISH_HANDLED; 4074 } 4075 4076 return FORWARD; 4077 } 4078 4079 @Override 4080 protected void onDeliverToNext(QueuedInputEvent q) { 4081 if ((q.mFlags & QueuedInputEvent.FLAG_RESYNTHESIZED) == 0) { 4082 // Cancel related synthetic events if any prior stage has handled the event. 4083 if (q.mEvent instanceof MotionEvent) { 4084 final MotionEvent event = (MotionEvent)q.mEvent; 4085 final int source = event.getSource(); 4086 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 4087 mTrackball.cancel(event); 4088 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 4089 mJoystick.cancel(event); 4090 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 4091 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 4092 mTouchNavigation.cancel(event); 4093 } 4094 } 4095 } 4096 super.onDeliverToNext(q); 4097 } 4098 } 4099 4100 /** 4101 * Creates dpad events from unhandled trackball movements. 4102 */ 4103 final class SyntheticTrackballHandler { 4104 private final TrackballAxis mX = new TrackballAxis(); 4105 private final TrackballAxis mY = new TrackballAxis(); 4106 private long mLastTime; 4107 4108 public void process(MotionEvent event) { 4109 // Translate the trackball event into DPAD keys and try to deliver those. 4110 long curTime = SystemClock.uptimeMillis(); 4111 if ((mLastTime + MAX_TRACKBALL_DELAY) < curTime) { 4112 // It has been too long since the last movement, 4113 // so restart at the beginning. 4114 mX.reset(0); 4115 mY.reset(0); 4116 mLastTime = curTime; 4117 } 4118 4119 final int action = event.getAction(); 4120 final int metaState = event.getMetaState(); 4121 switch (action) { 4122 case MotionEvent.ACTION_DOWN: 4123 mX.reset(2); 4124 mY.reset(2); 4125 enqueueInputEvent(new KeyEvent(curTime, curTime, 4126 KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 4127 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4128 InputDevice.SOURCE_KEYBOARD)); 4129 break; 4130 case MotionEvent.ACTION_UP: 4131 mX.reset(2); 4132 mY.reset(2); 4133 enqueueInputEvent(new KeyEvent(curTime, curTime, 4134 KeyEvent.ACTION_UP, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 4135 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4136 InputDevice.SOURCE_KEYBOARD)); 4137 break; 4138 } 4139 4140 if (DEBUG_TRACKBALL) Log.v(TAG, "TB X=" + mX.position + " step=" 4141 + mX.step + " dir=" + mX.dir + " acc=" + mX.acceleration 4142 + " move=" + event.getX() 4143 + " / Y=" + mY.position + " step=" 4144 + mY.step + " dir=" + mY.dir + " acc=" + mY.acceleration 4145 + " move=" + event.getY()); 4146 final float xOff = mX.collect(event.getX(), event.getEventTime(), "X"); 4147 final float yOff = mY.collect(event.getY(), event.getEventTime(), "Y"); 4148 4149 // Generate DPAD events based on the trackball movement. 4150 // We pick the axis that has moved the most as the direction of 4151 // the DPAD. When we generate DPAD events for one axis, then the 4152 // other axis is reset -- we don't want to perform DPAD jumps due 4153 // to slight movements in the trackball when making major movements 4154 // along the other axis. 4155 int keycode = 0; 4156 int movement = 0; 4157 float accel = 1; 4158 if (xOff > yOff) { 4159 movement = mX.generate(); 4160 if (movement != 0) { 4161 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_RIGHT 4162 : KeyEvent.KEYCODE_DPAD_LEFT; 4163 accel = mX.acceleration; 4164 mY.reset(2); 4165 } 4166 } else if (yOff > 0) { 4167 movement = mY.generate(); 4168 if (movement != 0) { 4169 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_DOWN 4170 : KeyEvent.KEYCODE_DPAD_UP; 4171 accel = mY.acceleration; 4172 mX.reset(2); 4173 } 4174 } 4175 4176 if (keycode != 0) { 4177 if (movement < 0) movement = -movement; 4178 int accelMovement = (int)(movement * accel); 4179 if (DEBUG_TRACKBALL) Log.v(TAG, "Move: movement=" + movement 4180 + " accelMovement=" + accelMovement 4181 + " accel=" + accel); 4182 if (accelMovement > movement) { 4183 if (DEBUG_TRACKBALL) Log.v(TAG, "Delivering fake DPAD: " 4184 + keycode); 4185 movement--; 4186 int repeatCount = accelMovement - movement; 4187 enqueueInputEvent(new KeyEvent(curTime, curTime, 4188 KeyEvent.ACTION_MULTIPLE, keycode, repeatCount, metaState, 4189 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4190 InputDevice.SOURCE_KEYBOARD)); 4191 } 4192 while (movement > 0) { 4193 if (DEBUG_TRACKBALL) Log.v(TAG, "Delivering fake DPAD: " 4194 + keycode); 4195 movement--; 4196 curTime = SystemClock.uptimeMillis(); 4197 enqueueInputEvent(new KeyEvent(curTime, curTime, 4198 KeyEvent.ACTION_DOWN, keycode, 0, metaState, 4199 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4200 InputDevice.SOURCE_KEYBOARD)); 4201 enqueueInputEvent(new KeyEvent(curTime, curTime, 4202 KeyEvent.ACTION_UP, keycode, 0, metaState, 4203 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4204 InputDevice.SOURCE_KEYBOARD)); 4205 } 4206 mLastTime = curTime; 4207 } 4208 } 4209 4210 public void cancel(MotionEvent event) { 4211 mLastTime = Integer.MIN_VALUE; 4212 4213 // If we reach this, we consumed a trackball event. 4214 // Because we will not translate the trackball event into a key event, 4215 // touch mode will not exit, so we exit touch mode here. 4216 if (mView != null && mAdded) { 4217 ensureTouchMode(false); 4218 } 4219 } 4220 } 4221 4222 /** 4223 * Maintains state information for a single trackball axis, generating 4224 * discrete (DPAD) movements based on raw trackball motion. 4225 */ 4226 static final class TrackballAxis { 4227 /** 4228 * The maximum amount of acceleration we will apply. 4229 */ 4230 static final float MAX_ACCELERATION = 20; 4231 4232 /** 4233 * The maximum amount of time (in milliseconds) between events in order 4234 * for us to consider the user to be doing fast trackball movements, 4235 * and thus apply an acceleration. 4236 */ 4237 static final long FAST_MOVE_TIME = 150; 4238 4239 /** 4240 * Scaling factor to the time (in milliseconds) between events to how 4241 * much to multiple/divide the current acceleration. When movement 4242 * is < FAST_MOVE_TIME this multiplies the acceleration; when > 4243 * FAST_MOVE_TIME it divides it. 4244 */ 4245 static final float ACCEL_MOVE_SCALING_FACTOR = (1.0f/40); 4246 4247 static final float FIRST_MOVEMENT_THRESHOLD = 0.5f; 4248 static final float SECOND_CUMULATIVE_MOVEMENT_THRESHOLD = 2.0f; 4249 static final float SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD = 1.0f; 4250 4251 float position; 4252 float acceleration = 1; 4253 long lastMoveTime = 0; 4254 int step; 4255 int dir; 4256 int nonAccelMovement; 4257 4258 void reset(int _step) { 4259 position = 0; 4260 acceleration = 1; 4261 lastMoveTime = 0; 4262 step = _step; 4263 dir = 0; 4264 } 4265 4266 /** 4267 * Add trackball movement into the state. If the direction of movement 4268 * has been reversed, the state is reset before adding the 4269 * movement (so that you don't have to compensate for any previously 4270 * collected movement before see the result of the movement in the 4271 * new direction). 4272 * 4273 * @return Returns the absolute value of the amount of movement 4274 * collected so far. 4275 */ 4276 float collect(float off, long time, String axis) { 4277 long normTime; 4278 if (off > 0) { 4279 normTime = (long)(off * FAST_MOVE_TIME); 4280 if (dir < 0) { 4281 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to positive!"); 4282 position = 0; 4283 step = 0; 4284 acceleration = 1; 4285 lastMoveTime = 0; 4286 } 4287 dir = 1; 4288 } else if (off < 0) { 4289 normTime = (long)((-off) * FAST_MOVE_TIME); 4290 if (dir > 0) { 4291 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to negative!"); 4292 position = 0; 4293 step = 0; 4294 acceleration = 1; 4295 lastMoveTime = 0; 4296 } 4297 dir = -1; 4298 } else { 4299 normTime = 0; 4300 } 4301 4302 // The number of milliseconds between each movement that is 4303 // considered "normal" and will not result in any acceleration 4304 // or deceleration, scaled by the offset we have here. 4305 if (normTime > 0) { 4306 long delta = time - lastMoveTime; 4307 lastMoveTime = time; 4308 float acc = acceleration; 4309 if (delta < normTime) { 4310 // The user is scrolling rapidly, so increase acceleration. 4311 float scale = (normTime-delta) * ACCEL_MOVE_SCALING_FACTOR; 4312 if (scale > 1) acc *= scale; 4313 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " accelerate: off=" 4314 + off + " normTime=" + normTime + " delta=" + delta 4315 + " scale=" + scale + " acc=" + acc); 4316 acceleration = acc < MAX_ACCELERATION ? acc : MAX_ACCELERATION; 4317 } else { 4318 // The user is scrolling slowly, so decrease acceleration. 4319 float scale = (delta-normTime) * ACCEL_MOVE_SCALING_FACTOR; 4320 if (scale > 1) acc /= scale; 4321 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " deccelerate: off=" 4322 + off + " normTime=" + normTime + " delta=" + delta 4323 + " scale=" + scale + " acc=" + acc); 4324 acceleration = acc > 1 ? acc : 1; 4325 } 4326 } 4327 position += off; 4328 return Math.abs(position); 4329 } 4330 4331 /** 4332 * Generate the number of discrete movement events appropriate for 4333 * the currently collected trackball movement. 4334 * 4335 * @return Returns the number of discrete movements, either positive 4336 * or negative, or 0 if there is not enough trackball movement yet 4337 * for a discrete movement. 4338 */ 4339 int generate() { 4340 int movement = 0; 4341 nonAccelMovement = 0; 4342 do { 4343 final int dir = position >= 0 ? 1 : -1; 4344 switch (step) { 4345 // If we are going to execute the first step, then we want 4346 // to do this as soon as possible instead of waiting for 4347 // a full movement, in order to make things look responsive. 4348 case 0: 4349 if (Math.abs(position) < FIRST_MOVEMENT_THRESHOLD) { 4350 return movement; 4351 } 4352 movement += dir; 4353 nonAccelMovement += dir; 4354 step = 1; 4355 break; 4356 // If we have generated the first movement, then we need 4357 // to wait for the second complete trackball motion before 4358 // generating the second discrete movement. 4359 case 1: 4360 if (Math.abs(position) < SECOND_CUMULATIVE_MOVEMENT_THRESHOLD) { 4361 return movement; 4362 } 4363 movement += dir; 4364 nonAccelMovement += dir; 4365 position -= SECOND_CUMULATIVE_MOVEMENT_THRESHOLD * dir; 4366 step = 2; 4367 break; 4368 // After the first two, we generate discrete movements 4369 // consistently with the trackball, applying an acceleration 4370 // if the trackball is moving quickly. This is a simple 4371 // acceleration on top of what we already compute based 4372 // on how quickly the wheel is being turned, to apply 4373 // a longer increasing acceleration to continuous movement 4374 // in one direction. 4375 default: 4376 if (Math.abs(position) < SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD) { 4377 return movement; 4378 } 4379 movement += dir; 4380 position -= dir * SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD; 4381 float acc = acceleration; 4382 acc *= 1.1f; 4383 acceleration = acc < MAX_ACCELERATION ? acc : acceleration; 4384 break; 4385 } 4386 } while (true); 4387 } 4388 } 4389 4390 /** 4391 * Creates dpad events from unhandled joystick movements. 4392 */ 4393 final class SyntheticJoystickHandler extends Handler { 4394 private final static String TAG = "SyntheticJoystickHandler"; 4395 private final static int MSG_ENQUEUE_X_AXIS_KEY_REPEAT = 1; 4396 private final static int MSG_ENQUEUE_Y_AXIS_KEY_REPEAT = 2; 4397 4398 private int mLastXDirection; 4399 private int mLastYDirection; 4400 private int mLastXKeyCode; 4401 private int mLastYKeyCode; 4402 4403 public SyntheticJoystickHandler() { 4404 super(true); 4405 } 4406 4407 @Override 4408 public void handleMessage(Message msg) { 4409 switch (msg.what) { 4410 case MSG_ENQUEUE_X_AXIS_KEY_REPEAT: 4411 case MSG_ENQUEUE_Y_AXIS_KEY_REPEAT: { 4412 KeyEvent oldEvent = (KeyEvent)msg.obj; 4413 KeyEvent e = KeyEvent.changeTimeRepeat(oldEvent, 4414 SystemClock.uptimeMillis(), 4415 oldEvent.getRepeatCount() + 1); 4416 if (mAttachInfo.mHasWindowFocus) { 4417 enqueueInputEvent(e); 4418 Message m = obtainMessage(msg.what, e); 4419 m.setAsynchronous(true); 4420 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatDelay()); 4421 } 4422 } break; 4423 } 4424 } 4425 4426 public void process(MotionEvent event) { 4427 switch(event.getActionMasked()) { 4428 case MotionEvent.ACTION_CANCEL: 4429 cancel(event); 4430 break; 4431 case MotionEvent.ACTION_MOVE: 4432 update(event, true); 4433 break; 4434 default: 4435 Log.w(TAG, "Unexpected action: " + event.getActionMasked()); 4436 } 4437 } 4438 4439 private void cancel(MotionEvent event) { 4440 removeMessages(MSG_ENQUEUE_X_AXIS_KEY_REPEAT); 4441 removeMessages(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT); 4442 update(event, false); 4443 } 4444 4445 private void update(MotionEvent event, boolean synthesizeNewKeys) { 4446 final long time = event.getEventTime(); 4447 final int metaState = event.getMetaState(); 4448 final int deviceId = event.getDeviceId(); 4449 final int source = event.getSource(); 4450 4451 int xDirection = joystickAxisValueToDirection( 4452 event.getAxisValue(MotionEvent.AXIS_HAT_X)); 4453 if (xDirection == 0) { 4454 xDirection = joystickAxisValueToDirection(event.getX()); 4455 } 4456 4457 int yDirection = joystickAxisValueToDirection( 4458 event.getAxisValue(MotionEvent.AXIS_HAT_Y)); 4459 if (yDirection == 0) { 4460 yDirection = joystickAxisValueToDirection(event.getY()); 4461 } 4462 4463 if (xDirection != mLastXDirection) { 4464 if (mLastXKeyCode != 0) { 4465 removeMessages(MSG_ENQUEUE_X_AXIS_KEY_REPEAT); 4466 enqueueInputEvent(new KeyEvent(time, time, 4467 KeyEvent.ACTION_UP, mLastXKeyCode, 0, metaState, 4468 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4469 mLastXKeyCode = 0; 4470 } 4471 4472 mLastXDirection = xDirection; 4473 4474 if (xDirection != 0 && synthesizeNewKeys) { 4475 mLastXKeyCode = xDirection > 0 4476 ? KeyEvent.KEYCODE_DPAD_RIGHT : KeyEvent.KEYCODE_DPAD_LEFT; 4477 final KeyEvent e = new KeyEvent(time, time, 4478 KeyEvent.ACTION_DOWN, mLastXKeyCode, 0, metaState, 4479 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4480 enqueueInputEvent(e); 4481 Message m = obtainMessage(MSG_ENQUEUE_X_AXIS_KEY_REPEAT, e); 4482 m.setAsynchronous(true); 4483 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4484 } 4485 } 4486 4487 if (yDirection != mLastYDirection) { 4488 if (mLastYKeyCode != 0) { 4489 removeMessages(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT); 4490 enqueueInputEvent(new KeyEvent(time, time, 4491 KeyEvent.ACTION_UP, mLastYKeyCode, 0, metaState, 4492 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4493 mLastYKeyCode = 0; 4494 } 4495 4496 mLastYDirection = yDirection; 4497 4498 if (yDirection != 0 && synthesizeNewKeys) { 4499 mLastYKeyCode = yDirection > 0 4500 ? KeyEvent.KEYCODE_DPAD_DOWN : KeyEvent.KEYCODE_DPAD_UP; 4501 final KeyEvent e = new KeyEvent(time, time, 4502 KeyEvent.ACTION_DOWN, mLastYKeyCode, 0, metaState, 4503 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4504 enqueueInputEvent(e); 4505 Message m = obtainMessage(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT, e); 4506 m.setAsynchronous(true); 4507 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4508 } 4509 } 4510 } 4511 4512 private int joystickAxisValueToDirection(float value) { 4513 if (value >= 0.5f) { 4514 return 1; 4515 } else if (value <= -0.5f) { 4516 return -1; 4517 } else { 4518 return 0; 4519 } 4520 } 4521 } 4522 4523 /** 4524 * Creates dpad events from unhandled touch navigation movements. 4525 */ 4526 final class SyntheticTouchNavigationHandler extends Handler { 4527 private static final String LOCAL_TAG = "SyntheticTouchNavigationHandler"; 4528 private static final boolean LOCAL_DEBUG = false; 4529 4530 // Assumed nominal width and height in millimeters of a touch navigation pad, 4531 // if no resolution information is available from the input system. 4532 private static final float DEFAULT_WIDTH_MILLIMETERS = 48; 4533 private static final float DEFAULT_HEIGHT_MILLIMETERS = 48; 4534 4535 /* TODO: These constants should eventually be moved to ViewConfiguration. */ 4536 4537 // The nominal distance traveled to move by one unit. 4538 private static final int TICK_DISTANCE_MILLIMETERS = 12; 4539 4540 // Minimum and maximum fling velocity in ticks per second. 4541 // The minimum velocity should be set such that we perform enough ticks per 4542 // second that the fling appears to be fluid. For example, if we set the minimum 4543 // to 2 ticks per second, then there may be up to half a second delay between the next 4544 // to last and last ticks which is noticeably discrete and jerky. This value should 4545 // probably not be set to anything less than about 4. 4546 // If fling accuracy is a problem then consider tuning the tick distance instead. 4547 private static final float MIN_FLING_VELOCITY_TICKS_PER_SECOND = 6f; 4548 private static final float MAX_FLING_VELOCITY_TICKS_PER_SECOND = 20f; 4549 4550 // Fling velocity decay factor applied after each new key is emitted. 4551 // This parameter controls the deceleration and overall duration of the fling. 4552 // The fling stops automatically when its velocity drops below the minimum 4553 // fling velocity defined above. 4554 private static final float FLING_TICK_DECAY = 0.8f; 4555 4556 /* The input device that we are tracking. */ 4557 4558 private int mCurrentDeviceId = -1; 4559 private int mCurrentSource; 4560 private boolean mCurrentDeviceSupported; 4561 4562 /* Configuration for the current input device. */ 4563 4564 // The scaled tick distance. A movement of this amount should generally translate 4565 // into a single dpad event in a given direction. 4566 private float mConfigTickDistance; 4567 4568 // The minimum and maximum scaled fling velocity. 4569 private float mConfigMinFlingVelocity; 4570 private float mConfigMaxFlingVelocity; 4571 4572 /* Tracking state. */ 4573 4574 // The velocity tracker for detecting flings. 4575 private VelocityTracker mVelocityTracker; 4576 4577 // The active pointer id, or -1 if none. 4578 private int mActivePointerId = -1; 4579 4580 // Location where tracking started. 4581 private float mStartX; 4582 private float mStartY; 4583 4584 // Most recently observed position. 4585 private float mLastX; 4586 private float mLastY; 4587 4588 // Accumulated movement delta since the last direction key was sent. 4589 private float mAccumulatedX; 4590 private float mAccumulatedY; 4591 4592 // Set to true if any movement was delivered to the app. 4593 // Implies that tap slop was exceeded. 4594 private boolean mConsumedMovement; 4595 4596 // The most recently sent key down event. 4597 // The keycode remains set until the direction changes or a fling ends 4598 // so that repeated key events may be generated as required. 4599 private long mPendingKeyDownTime; 4600 private int mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 4601 private int mPendingKeyRepeatCount; 4602 private int mPendingKeyMetaState; 4603 4604 // The current fling velocity while a fling is in progress. 4605 private boolean mFlinging; 4606 private float mFlingVelocity; 4607 4608 public SyntheticTouchNavigationHandler() { 4609 super(true); 4610 } 4611 4612 public void process(MotionEvent event) { 4613 // Update the current device information. 4614 final long time = event.getEventTime(); 4615 final int deviceId = event.getDeviceId(); 4616 final int source = event.getSource(); 4617 if (mCurrentDeviceId != deviceId || mCurrentSource != source) { 4618 finishKeys(time); 4619 finishTracking(time); 4620 mCurrentDeviceId = deviceId; 4621 mCurrentSource = source; 4622 mCurrentDeviceSupported = false; 4623 InputDevice device = event.getDevice(); 4624 if (device != null) { 4625 // In order to support an input device, we must know certain 4626 // characteristics about it, such as its size and resolution. 4627 InputDevice.MotionRange xRange = device.getMotionRange(MotionEvent.AXIS_X); 4628 InputDevice.MotionRange yRange = device.getMotionRange(MotionEvent.AXIS_Y); 4629 if (xRange != null && yRange != null) { 4630 mCurrentDeviceSupported = true; 4631 4632 // Infer the resolution if it not actually known. 4633 float xRes = xRange.getResolution(); 4634 if (xRes <= 0) { 4635 xRes = xRange.getRange() / DEFAULT_WIDTH_MILLIMETERS; 4636 } 4637 float yRes = yRange.getResolution(); 4638 if (yRes <= 0) { 4639 yRes = yRange.getRange() / DEFAULT_HEIGHT_MILLIMETERS; 4640 } 4641 float nominalRes = (xRes + yRes) * 0.5f; 4642 4643 // Precompute all of the configuration thresholds we will need. 4644 mConfigTickDistance = TICK_DISTANCE_MILLIMETERS * nominalRes; 4645 mConfigMinFlingVelocity = 4646 MIN_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 4647 mConfigMaxFlingVelocity = 4648 MAX_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 4649 4650 if (LOCAL_DEBUG) { 4651 Log.d(LOCAL_TAG, "Configured device " + mCurrentDeviceId 4652 + " (" + Integer.toHexString(mCurrentSource) + "): " 4653 + ", mConfigTickDistance=" + mConfigTickDistance 4654 + ", mConfigMinFlingVelocity=" + mConfigMinFlingVelocity 4655 + ", mConfigMaxFlingVelocity=" + mConfigMaxFlingVelocity); 4656 } 4657 } 4658 } 4659 } 4660 if (!mCurrentDeviceSupported) { 4661 return; 4662 } 4663 4664 // Handle the event. 4665 final int action = event.getActionMasked(); 4666 switch (action) { 4667 case MotionEvent.ACTION_DOWN: { 4668 boolean caughtFling = mFlinging; 4669 finishKeys(time); 4670 finishTracking(time); 4671 mActivePointerId = event.getPointerId(0); 4672 mVelocityTracker = VelocityTracker.obtain(); 4673 mVelocityTracker.addMovement(event); 4674 mStartX = event.getX(); 4675 mStartY = event.getY(); 4676 mLastX = mStartX; 4677 mLastY = mStartY; 4678 mAccumulatedX = 0; 4679 mAccumulatedY = 0; 4680 4681 // If we caught a fling, then pretend that the tap slop has already 4682 // been exceeded to suppress taps whose only purpose is to stop the fling. 4683 mConsumedMovement = caughtFling; 4684 break; 4685 } 4686 4687 case MotionEvent.ACTION_MOVE: 4688 case MotionEvent.ACTION_UP: { 4689 if (mActivePointerId < 0) { 4690 break; 4691 } 4692 final int index = event.findPointerIndex(mActivePointerId); 4693 if (index < 0) { 4694 finishKeys(time); 4695 finishTracking(time); 4696 break; 4697 } 4698 4699 mVelocityTracker.addMovement(event); 4700 final float x = event.getX(index); 4701 final float y = event.getY(index); 4702 mAccumulatedX += x - mLastX; 4703 mAccumulatedY += y - mLastY; 4704 mLastX = x; 4705 mLastY = y; 4706 4707 // Consume any accumulated movement so far. 4708 final int metaState = event.getMetaState(); 4709 consumeAccumulatedMovement(time, metaState); 4710 4711 // Detect taps and flings. 4712 if (action == MotionEvent.ACTION_UP) { 4713 if (mConsumedMovement && mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 4714 // It might be a fling. 4715 mVelocityTracker.computeCurrentVelocity(1000, mConfigMaxFlingVelocity); 4716 final float vx = mVelocityTracker.getXVelocity(mActivePointerId); 4717 final float vy = mVelocityTracker.getYVelocity(mActivePointerId); 4718 if (!startFling(time, vx, vy)) { 4719 finishKeys(time); 4720 } 4721 } 4722 finishTracking(time); 4723 } 4724 break; 4725 } 4726 4727 case MotionEvent.ACTION_CANCEL: { 4728 finishKeys(time); 4729 finishTracking(time); 4730 break; 4731 } 4732 } 4733 } 4734 4735 public void cancel(MotionEvent event) { 4736 if (mCurrentDeviceId == event.getDeviceId() 4737 && mCurrentSource == event.getSource()) { 4738 final long time = event.getEventTime(); 4739 finishKeys(time); 4740 finishTracking(time); 4741 } 4742 } 4743 4744 private void finishKeys(long time) { 4745 cancelFling(); 4746 sendKeyUp(time); 4747 } 4748 4749 private void finishTracking(long time) { 4750 if (mActivePointerId >= 0) { 4751 mActivePointerId = -1; 4752 mVelocityTracker.recycle(); 4753 mVelocityTracker = null; 4754 } 4755 } 4756 4757 private void consumeAccumulatedMovement(long time, int metaState) { 4758 final float absX = Math.abs(mAccumulatedX); 4759 final float absY = Math.abs(mAccumulatedY); 4760 if (absX >= absY) { 4761 if (absX >= mConfigTickDistance) { 4762 mAccumulatedX = consumeAccumulatedMovement(time, metaState, mAccumulatedX, 4763 KeyEvent.KEYCODE_DPAD_LEFT, KeyEvent.KEYCODE_DPAD_RIGHT); 4764 mAccumulatedY = 0; 4765 mConsumedMovement = true; 4766 } 4767 } else { 4768 if (absY >= mConfigTickDistance) { 4769 mAccumulatedY = consumeAccumulatedMovement(time, metaState, mAccumulatedY, 4770 KeyEvent.KEYCODE_DPAD_UP, KeyEvent.KEYCODE_DPAD_DOWN); 4771 mAccumulatedX = 0; 4772 mConsumedMovement = true; 4773 } 4774 } 4775 } 4776 4777 private float consumeAccumulatedMovement(long time, int metaState, 4778 float accumulator, int negativeKeyCode, int positiveKeyCode) { 4779 while (accumulator <= -mConfigTickDistance) { 4780 sendKeyDownOrRepeat(time, negativeKeyCode, metaState); 4781 accumulator += mConfigTickDistance; 4782 } 4783 while (accumulator >= mConfigTickDistance) { 4784 sendKeyDownOrRepeat(time, positiveKeyCode, metaState); 4785 accumulator -= mConfigTickDistance; 4786 } 4787 return accumulator; 4788 } 4789 4790 private void sendKeyDownOrRepeat(long time, int keyCode, int metaState) { 4791 if (mPendingKeyCode != keyCode) { 4792 sendKeyUp(time); 4793 mPendingKeyDownTime = time; 4794 mPendingKeyCode = keyCode; 4795 mPendingKeyRepeatCount = 0; 4796 } else { 4797 mPendingKeyRepeatCount += 1; 4798 } 4799 mPendingKeyMetaState = metaState; 4800 4801 // Note: Normally we would pass FLAG_LONG_PRESS when the repeat count is 1 4802 // but it doesn't quite make sense when simulating the events in this way. 4803 if (LOCAL_DEBUG) { 4804 Log.d(LOCAL_TAG, "Sending key down: keyCode=" + mPendingKeyCode 4805 + ", repeatCount=" + mPendingKeyRepeatCount 4806 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 4807 } 4808 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 4809 KeyEvent.ACTION_DOWN, mPendingKeyCode, mPendingKeyRepeatCount, 4810 mPendingKeyMetaState, mCurrentDeviceId, 4811 KeyEvent.FLAG_FALLBACK, mCurrentSource)); 4812 } 4813 4814 private void sendKeyUp(long time) { 4815 if (mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 4816 if (LOCAL_DEBUG) { 4817 Log.d(LOCAL_TAG, "Sending key up: keyCode=" + mPendingKeyCode 4818 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 4819 } 4820 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 4821 KeyEvent.ACTION_UP, mPendingKeyCode, 0, mPendingKeyMetaState, 4822 mCurrentDeviceId, 0, KeyEvent.FLAG_FALLBACK, 4823 mCurrentSource)); 4824 mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 4825 } 4826 } 4827 4828 private boolean startFling(long time, float vx, float vy) { 4829 if (LOCAL_DEBUG) { 4830 Log.d(LOCAL_TAG, "Considering fling: vx=" + vx + ", vy=" + vy 4831 + ", min=" + mConfigMinFlingVelocity); 4832 } 4833 4834 // Flings must be oriented in the same direction as the preceding movements. 4835 switch (mPendingKeyCode) { 4836 case KeyEvent.KEYCODE_DPAD_LEFT: 4837 if (-vx >= mConfigMinFlingVelocity 4838 && Math.abs(vy) < mConfigMinFlingVelocity) { 4839 mFlingVelocity = -vx; 4840 break; 4841 } 4842 return false; 4843 4844 case KeyEvent.KEYCODE_DPAD_RIGHT: 4845 if (vx >= mConfigMinFlingVelocity 4846 && Math.abs(vy) < mConfigMinFlingVelocity) { 4847 mFlingVelocity = vx; 4848 break; 4849 } 4850 return false; 4851 4852 case KeyEvent.KEYCODE_DPAD_UP: 4853 if (-vy >= mConfigMinFlingVelocity 4854 && Math.abs(vx) < mConfigMinFlingVelocity) { 4855 mFlingVelocity = -vy; 4856 break; 4857 } 4858 return false; 4859 4860 case KeyEvent.KEYCODE_DPAD_DOWN: 4861 if (vy >= mConfigMinFlingVelocity 4862 && Math.abs(vx) < mConfigMinFlingVelocity) { 4863 mFlingVelocity = vy; 4864 break; 4865 } 4866 return false; 4867 } 4868 4869 // Post the first fling event. 4870 mFlinging = postFling(time); 4871 return mFlinging; 4872 } 4873 4874 private boolean postFling(long time) { 4875 // The idea here is to estimate the time when the pointer would have 4876 // traveled one tick distance unit given the current fling velocity. 4877 // This effect creates continuity of motion. 4878 if (mFlingVelocity >= mConfigMinFlingVelocity) { 4879 long delay = (long)(mConfigTickDistance / mFlingVelocity * 1000); 4880 postAtTime(mFlingRunnable, time + delay); 4881 if (LOCAL_DEBUG) { 4882 Log.d(LOCAL_TAG, "Posted fling: velocity=" 4883 + mFlingVelocity + ", delay=" + delay 4884 + ", keyCode=" + mPendingKeyCode); 4885 } 4886 return true; 4887 } 4888 return false; 4889 } 4890 4891 private void cancelFling() { 4892 if (mFlinging) { 4893 removeCallbacks(mFlingRunnable); 4894 mFlinging = false; 4895 } 4896 } 4897 4898 private final Runnable mFlingRunnable = new Runnable() { 4899 @Override 4900 public void run() { 4901 final long time = SystemClock.uptimeMillis(); 4902 sendKeyDownOrRepeat(time, mPendingKeyCode, mPendingKeyMetaState); 4903 mFlingVelocity *= FLING_TICK_DECAY; 4904 if (!postFling(time)) { 4905 mFlinging = false; 4906 finishKeys(time); 4907 } 4908 } 4909 }; 4910 } 4911 4912 final class SyntheticKeyboardHandler { 4913 public void process(KeyEvent event) { 4914 if ((event.getFlags() & KeyEvent.FLAG_FALLBACK) != 0) { 4915 return; 4916 } 4917 4918 final KeyCharacterMap kcm = event.getKeyCharacterMap(); 4919 final int keyCode = event.getKeyCode(); 4920 final int metaState = event.getMetaState(); 4921 4922 // Check for fallback actions specified by the key character map. 4923 KeyCharacterMap.FallbackAction fallbackAction = 4924 kcm.getFallbackAction(keyCode, metaState); 4925 if (fallbackAction != null) { 4926 final int flags = event.getFlags() | KeyEvent.FLAG_FALLBACK; 4927 KeyEvent fallbackEvent = KeyEvent.obtain( 4928 event.getDownTime(), event.getEventTime(), 4929 event.getAction(), fallbackAction.keyCode, 4930 event.getRepeatCount(), fallbackAction.metaState, 4931 event.getDeviceId(), event.getScanCode(), 4932 flags, event.getSource(), null); 4933 fallbackAction.recycle(); 4934 enqueueInputEvent(fallbackEvent); 4935 } 4936 } 4937 } 4938 4939 /** 4940 * Returns true if the key is used for keyboard navigation. 4941 * @param keyEvent The key event. 4942 * @return True if the key is used for keyboard navigation. 4943 */ 4944 private static boolean isNavigationKey(KeyEvent keyEvent) { 4945 switch (keyEvent.getKeyCode()) { 4946 case KeyEvent.KEYCODE_DPAD_LEFT: 4947 case KeyEvent.KEYCODE_DPAD_RIGHT: 4948 case KeyEvent.KEYCODE_DPAD_UP: 4949 case KeyEvent.KEYCODE_DPAD_DOWN: 4950 case KeyEvent.KEYCODE_DPAD_CENTER: 4951 case KeyEvent.KEYCODE_PAGE_UP: 4952 case KeyEvent.KEYCODE_PAGE_DOWN: 4953 case KeyEvent.KEYCODE_MOVE_HOME: 4954 case KeyEvent.KEYCODE_MOVE_END: 4955 case KeyEvent.KEYCODE_TAB: 4956 case KeyEvent.KEYCODE_SPACE: 4957 case KeyEvent.KEYCODE_ENTER: 4958 return true; 4959 } 4960 return false; 4961 } 4962 4963 /** 4964 * Returns true if the key is used for typing. 4965 * @param keyEvent The key event. 4966 * @return True if the key is used for typing. 4967 */ 4968 private static boolean isTypingKey(KeyEvent keyEvent) { 4969 return keyEvent.getUnicodeChar() > 0; 4970 } 4971 4972 /** 4973 * See if the key event means we should leave touch mode (and leave touch mode if so). 4974 * @param event The key event. 4975 * @return Whether this key event should be consumed (meaning the act of 4976 * leaving touch mode alone is considered the event). 4977 */ 4978 private boolean checkForLeavingTouchModeAndConsume(KeyEvent event) { 4979 // Only relevant in touch mode. 4980 if (!mAttachInfo.mInTouchMode) { 4981 return false; 4982 } 4983 4984 // Only consider leaving touch mode on DOWN or MULTIPLE actions, never on UP. 4985 final int action = event.getAction(); 4986 if (action != KeyEvent.ACTION_DOWN && action != KeyEvent.ACTION_MULTIPLE) { 4987 return false; 4988 } 4989 4990 // Don't leave touch mode if the IME told us not to. 4991 if ((event.getFlags() & KeyEvent.FLAG_KEEP_TOUCH_MODE) != 0) { 4992 return false; 4993 } 4994 4995 // If the key can be used for keyboard navigation then leave touch mode 4996 // and select a focused view if needed (in ensureTouchMode). 4997 // When a new focused view is selected, we consume the navigation key because 4998 // navigation doesn't make much sense unless a view already has focus so 4999 // the key's purpose is to set focus. 5000 if (isNavigationKey(event)) { 5001 return ensureTouchMode(false); 5002 } 5003 5004 // If the key can be used for typing then leave touch mode 5005 // and select a focused view if needed (in ensureTouchMode). 5006 // Always allow the view to process the typing key. 5007 if (isTypingKey(event)) { 5008 ensureTouchMode(false); 5009 return false; 5010 } 5011 5012 return false; 5013 } 5014 5015 /* drag/drop */ 5016 void setLocalDragState(Object obj) { 5017 mLocalDragState = obj; 5018 } 5019 5020 private void handleDragEvent(DragEvent event) { 5021 // From the root, only drag start/end/location are dispatched. entered/exited 5022 // are determined and dispatched by the viewgroup hierarchy, who then report 5023 // that back here for ultimate reporting back to the framework. 5024 if (mView != null && mAdded) { 5025 final int what = event.mAction; 5026 5027 if (what == DragEvent.ACTION_DRAG_EXITED) { 5028 // A direct EXITED event means that the window manager knows we've just crossed 5029 // a window boundary, so the current drag target within this one must have 5030 // just been exited. Send it the usual notifications and then we're done 5031 // for now. 5032 mView.dispatchDragEvent(event); 5033 } else { 5034 // Cache the drag description when the operation starts, then fill it in 5035 // on subsequent calls as a convenience 5036 if (what == DragEvent.ACTION_DRAG_STARTED) { 5037 mCurrentDragView = null; // Start the current-recipient tracking 5038 mDragDescription = event.mClipDescription; 5039 } else { 5040 event.mClipDescription = mDragDescription; 5041 } 5042 5043 // For events with a [screen] location, translate into window coordinates 5044 if ((what == DragEvent.ACTION_DRAG_LOCATION) || (what == DragEvent.ACTION_DROP)) { 5045 mDragPoint.set(event.mX, event.mY); 5046 if (mTranslator != null) { 5047 mTranslator.translatePointInScreenToAppWindow(mDragPoint); 5048 } 5049 5050 if (mCurScrollY != 0) { 5051 mDragPoint.offset(0, mCurScrollY); 5052 } 5053 5054 event.mX = mDragPoint.x; 5055 event.mY = mDragPoint.y; 5056 } 5057 5058 // Remember who the current drag target is pre-dispatch 5059 final View prevDragView = mCurrentDragView; 5060 5061 // Now dispatch the drag/drop event 5062 boolean result = mView.dispatchDragEvent(event); 5063 5064 // If we changed apparent drag target, tell the OS about it 5065 if (prevDragView != mCurrentDragView) { 5066 try { 5067 if (prevDragView != null) { 5068 mWindowSession.dragRecipientExited(mWindow); 5069 } 5070 if (mCurrentDragView != null) { 5071 mWindowSession.dragRecipientEntered(mWindow); 5072 } 5073 } catch (RemoteException e) { 5074 Slog.e(TAG, "Unable to note drag target change"); 5075 } 5076 } 5077 5078 // Report the drop result when we're done 5079 if (what == DragEvent.ACTION_DROP) { 5080 mDragDescription = null; 5081 try { 5082 Log.i(TAG, "Reporting drop result: " + result); 5083 mWindowSession.reportDropResult(mWindow, result); 5084 } catch (RemoteException e) { 5085 Log.e(TAG, "Unable to report drop result"); 5086 } 5087 } 5088 5089 // When the drag operation ends, release any local state object 5090 // that may have been in use 5091 if (what == DragEvent.ACTION_DRAG_ENDED) { 5092 setLocalDragState(null); 5093 } 5094 } 5095 } 5096 event.recycle(); 5097 } 5098 5099 public void handleDispatchSystemUiVisibilityChanged(SystemUiVisibilityInfo args) { 5100 if (mSeq != args.seq) { 5101 // The sequence has changed, so we need to update our value and make 5102 // sure to do a traversal afterward so the window manager is given our 5103 // most recent data. 5104 mSeq = args.seq; 5105 mAttachInfo.mForceReportNewAttributes = true; 5106 scheduleTraversals(); 5107 } 5108 if (mView == null) return; 5109 if (args.localChanges != 0) { 5110 mView.updateLocalSystemUiVisibility(args.localValue, args.localChanges); 5111 } 5112 if (mAttachInfo != null) { 5113 int visibility = args.globalVisibility&View.SYSTEM_UI_CLEARABLE_FLAGS; 5114 if (visibility != mAttachInfo.mGlobalSystemUiVisibility) { 5115 mAttachInfo.mGlobalSystemUiVisibility = visibility; 5116 mView.dispatchSystemUiVisibilityChanged(visibility); 5117 } 5118 } 5119 } 5120 5121 public void handleDispatchDoneAnimating() { 5122 if (mWindowsAnimating) { 5123 mWindowsAnimating = false; 5124 if (!mDirty.isEmpty() || mIsAnimating || mFullRedrawNeeded) { 5125 scheduleTraversals(); 5126 } 5127 } 5128 } 5129 5130 public void getLastTouchPoint(Point outLocation) { 5131 outLocation.x = (int) mLastTouchPoint.x; 5132 outLocation.y = (int) mLastTouchPoint.y; 5133 } 5134 5135 public void setDragFocus(View newDragTarget) { 5136 if (mCurrentDragView != newDragTarget) { 5137 mCurrentDragView = newDragTarget; 5138 } 5139 } 5140 5141 private AudioManager getAudioManager() { 5142 if (mView == null) { 5143 throw new IllegalStateException("getAudioManager called when there is no mView"); 5144 } 5145 if (mAudioManager == null) { 5146 mAudioManager = (AudioManager) mView.getContext().getSystemService(Context.AUDIO_SERVICE); 5147 } 5148 return mAudioManager; 5149 } 5150 5151 public AccessibilityInteractionController getAccessibilityInteractionController() { 5152 if (mView == null) { 5153 throw new IllegalStateException("getAccessibilityInteractionController" 5154 + " called when there is no mView"); 5155 } 5156 if (mAccessibilityInteractionController == null) { 5157 mAccessibilityInteractionController = new AccessibilityInteractionController(this); 5158 } 5159 return mAccessibilityInteractionController; 5160 } 5161 5162 private int relayoutWindow(WindowManager.LayoutParams params, int viewVisibility, 5163 boolean insetsPending) throws RemoteException { 5164 5165 float appScale = mAttachInfo.mApplicationScale; 5166 boolean restore = false; 5167 if (params != null && mTranslator != null) { 5168 restore = true; 5169 params.backup(); 5170 mTranslator.translateWindowLayout(params); 5171 } 5172 if (params != null) { 5173 if (DBG) Log.d(TAG, "WindowLayout in layoutWindow:" + params); 5174 } 5175 mPendingConfiguration.seq = 0; 5176 //Log.d(TAG, ">>>>>> CALLING relayout"); 5177 if (params != null && mOrigWindowType != params.type) { 5178 // For compatibility with old apps, don't crash here. 5179 if (mTargetSdkVersion < android.os.Build.VERSION_CODES.ICE_CREAM_SANDWICH) { 5180 Slog.w(TAG, "Window type can not be changed after " 5181 + "the window is added; ignoring change of " + mView); 5182 params.type = mOrigWindowType; 5183 } 5184 } 5185 int relayoutResult = mWindowSession.relayout( 5186 mWindow, mSeq, params, 5187 (int) (mView.getMeasuredWidth() * appScale + 0.5f), 5188 (int) (mView.getMeasuredHeight() * appScale + 0.5f), 5189 viewVisibility, insetsPending ? WindowManagerGlobal.RELAYOUT_INSETS_PENDING : 0, 5190 mWinFrame, mPendingOverscanInsets, mPendingContentInsets, mPendingVisibleInsets, 5191 mPendingConfiguration, mSurface); 5192 //Log.d(TAG, "<<<<<< BACK FROM relayout"); 5193 if (restore) { 5194 params.restore(); 5195 } 5196 5197 if (mTranslator != null) { 5198 mTranslator.translateRectInScreenToAppWinFrame(mWinFrame); 5199 mTranslator.translateRectInScreenToAppWindow(mPendingOverscanInsets); 5200 mTranslator.translateRectInScreenToAppWindow(mPendingContentInsets); 5201 mTranslator.translateRectInScreenToAppWindow(mPendingVisibleInsets); 5202 } 5203 return relayoutResult; 5204 } 5205 5206 /** 5207 * {@inheritDoc} 5208 */ 5209 @Override 5210 public void playSoundEffect(int effectId) { 5211 checkThread(); 5212 5213 if (mMediaDisabled) { 5214 return; 5215 } 5216 5217 try { 5218 final AudioManager audioManager = getAudioManager(); 5219 5220 switch (effectId) { 5221 case SoundEffectConstants.CLICK: 5222 audioManager.playSoundEffect(AudioManager.FX_KEY_CLICK); 5223 return; 5224 case SoundEffectConstants.NAVIGATION_DOWN: 5225 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_DOWN); 5226 return; 5227 case SoundEffectConstants.NAVIGATION_LEFT: 5228 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_LEFT); 5229 return; 5230 case SoundEffectConstants.NAVIGATION_RIGHT: 5231 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_RIGHT); 5232 return; 5233 case SoundEffectConstants.NAVIGATION_UP: 5234 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_UP); 5235 return; 5236 default: 5237 throw new IllegalArgumentException("unknown effect id " + effectId + 5238 " not defined in " + SoundEffectConstants.class.getCanonicalName()); 5239 } 5240 } catch (IllegalStateException e) { 5241 // Exception thrown by getAudioManager() when mView is null 5242 Log.e(TAG, "FATAL EXCEPTION when attempting to play sound effect: " + e); 5243 e.printStackTrace(); 5244 } 5245 } 5246 5247 /** 5248 * {@inheritDoc} 5249 */ 5250 @Override 5251 public boolean performHapticFeedback(int effectId, boolean always) { 5252 try { 5253 return mWindowSession.performHapticFeedback(mWindow, effectId, always); 5254 } catch (RemoteException e) { 5255 return false; 5256 } 5257 } 5258 5259 /** 5260 * {@inheritDoc} 5261 */ 5262 @Override 5263 public View focusSearch(View focused, int direction) { 5264 checkThread(); 5265 if (!(mView instanceof ViewGroup)) { 5266 return null; 5267 } 5268 return FocusFinder.getInstance().findNextFocus((ViewGroup) mView, focused, direction); 5269 } 5270 5271 public void debug() { 5272 mView.debug(); 5273 } 5274 5275 public void dump(String prefix, FileDescriptor fd, PrintWriter writer, String[] args) { 5276 String innerPrefix = prefix + " "; 5277 writer.print(prefix); writer.println("ViewRoot:"); 5278 writer.print(innerPrefix); writer.print("mAdded="); writer.print(mAdded); 5279 writer.print(" mRemoved="); writer.println(mRemoved); 5280 writer.print(innerPrefix); writer.print("mConsumeBatchedInputScheduled="); 5281 writer.println(mConsumeBatchedInputScheduled); 5282 writer.print(innerPrefix); writer.print("mConsumeBatchedInputImmediatelyScheduled="); 5283 writer.println(mConsumeBatchedInputImmediatelyScheduled); 5284 writer.print(innerPrefix); writer.print("mPendingInputEventCount="); 5285 writer.println(mPendingInputEventCount); 5286 writer.print(innerPrefix); writer.print("mProcessInputEventsScheduled="); 5287 writer.println(mProcessInputEventsScheduled); 5288 writer.print(innerPrefix); writer.print("mTraversalScheduled="); 5289 writer.print(mTraversalScheduled); 5290 if (mTraversalScheduled) { 5291 writer.print(" (barrier="); writer.print(mTraversalBarrier); writer.println(")"); 5292 } else { 5293 writer.println(); 5294 } 5295 mFirstInputStage.dump(innerPrefix, writer); 5296 5297 mChoreographer.dump(prefix, writer); 5298 5299 writer.print(prefix); writer.println("View Hierarchy:"); 5300 dumpViewHierarchy(innerPrefix, writer, mView); 5301 } 5302 5303 private void dumpViewHierarchy(String prefix, PrintWriter writer, View view) { 5304 writer.print(prefix); 5305 if (view == null) { 5306 writer.println("null"); 5307 return; 5308 } 5309 writer.println(view.toString()); 5310 if (!(view instanceof ViewGroup)) { 5311 return; 5312 } 5313 ViewGroup grp = (ViewGroup)view; 5314 final int N = grp.getChildCount(); 5315 if (N <= 0) { 5316 return; 5317 } 5318 prefix = prefix + " "; 5319 for (int i=0; i<N; i++) { 5320 dumpViewHierarchy(prefix, writer, grp.getChildAt(i)); 5321 } 5322 } 5323 5324 public void dumpGfxInfo(int[] info) { 5325 info[0] = info[1] = 0; 5326 if (mView != null) { 5327 getGfxInfo(mView, info); 5328 } 5329 } 5330 5331 private static void getGfxInfo(View view, int[] info) { 5332 RenderNode renderNode = view.mRenderNode; 5333 info[0]++; 5334 if (renderNode != null) { 5335 info[1] += renderNode.getDebugSize(); 5336 } 5337 5338 if (view instanceof ViewGroup) { 5339 ViewGroup group = (ViewGroup) view; 5340 5341 int count = group.getChildCount(); 5342 for (int i = 0; i < count; i++) { 5343 getGfxInfo(group.getChildAt(i), info); 5344 } 5345 } 5346 } 5347 5348 /** 5349 * @param immediate True, do now if not in traversal. False, put on queue and do later. 5350 * @return True, request has been queued. False, request has been completed. 5351 */ 5352 boolean die(boolean immediate) { 5353 // Make sure we do execute immediately if we are in the middle of a traversal or the damage 5354 // done by dispatchDetachedFromWindow will cause havoc on return. 5355 if (immediate && !mIsInTraversal) { 5356 doDie(); 5357 return false; 5358 } 5359 5360 if (!mIsDrawing) { 5361 destroyHardwareRenderer(); 5362 } else { 5363 Log.e(TAG, "Attempting to destroy the window while drawing!\n" + 5364 " window=" + this + ", title=" + mWindowAttributes.getTitle()); 5365 } 5366 mHandler.sendEmptyMessage(MSG_DIE); 5367 return true; 5368 } 5369 5370 void doDie() { 5371 checkThread(); 5372 if (LOCAL_LOGV) Log.v(TAG, "DIE in " + this + " of " + mSurface); 5373 synchronized (this) { 5374 if (mRemoved) { 5375 return; 5376 } 5377 mRemoved = true; 5378 if (mAdded) { 5379 dispatchDetachedFromWindow(); 5380 } 5381 5382 if (mAdded && !mFirst) { 5383 destroyHardwareRenderer(); 5384 5385 if (mView != null) { 5386 int viewVisibility = mView.getVisibility(); 5387 boolean viewVisibilityChanged = mViewVisibility != viewVisibility; 5388 if (mWindowAttributesChanged || viewVisibilityChanged) { 5389 // If layout params have been changed, first give them 5390 // to the window manager to make sure it has the correct 5391 // animation info. 5392 try { 5393 if ((relayoutWindow(mWindowAttributes, viewVisibility, false) 5394 & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 5395 mWindowSession.finishDrawing(mWindow); 5396 } 5397 } catch (RemoteException e) { 5398 } 5399 } 5400 5401 mSurface.release(); 5402 } 5403 } 5404 5405 mAdded = false; 5406 } 5407 WindowManagerGlobal.getInstance().doRemoveView(this); 5408 } 5409 5410 public void requestUpdateConfiguration(Configuration config) { 5411 Message msg = mHandler.obtainMessage(MSG_UPDATE_CONFIGURATION, config); 5412 mHandler.sendMessage(msg); 5413 } 5414 5415 public void loadSystemProperties() { 5416 mHandler.post(new Runnable() { 5417 @Override 5418 public void run() { 5419 // Profiling 5420 mProfileRendering = SystemProperties.getBoolean(PROPERTY_PROFILE_RENDERING, false); 5421 profileRendering(mAttachInfo.mHasWindowFocus); 5422 5423 // Media (used by sound effects) 5424 mMediaDisabled = SystemProperties.getBoolean(PROPERTY_MEDIA_DISABLED, false); 5425 5426 // Hardware rendering 5427 if (mAttachInfo.mHardwareRenderer != null) { 5428 if (mAttachInfo.mHardwareRenderer.loadSystemProperties()) { 5429 invalidate(); 5430 } 5431 } 5432 5433 // Layout debugging 5434 boolean layout = SystemProperties.getBoolean(View.DEBUG_LAYOUT_PROPERTY, false); 5435 if (layout != mAttachInfo.mDebugLayout) { 5436 mAttachInfo.mDebugLayout = layout; 5437 if (!mHandler.hasMessages(MSG_INVALIDATE_WORLD)) { 5438 mHandler.sendEmptyMessageDelayed(MSG_INVALIDATE_WORLD, 200); 5439 } 5440 } 5441 5442 // detect emulator 5443 mIsEmulator = Build.HARDWARE.contains("goldfish"); 5444 } 5445 }); 5446 } 5447 5448 private void destroyHardwareRenderer() { 5449 AttachInfo attachInfo = mAttachInfo; 5450 HardwareRenderer hardwareRenderer = attachInfo.mHardwareRenderer; 5451 5452 if (hardwareRenderer != null) { 5453 if (mView != null) { 5454 hardwareRenderer.destroyHardwareResources(mView); 5455 } 5456 hardwareRenderer.destroy(true); 5457 hardwareRenderer.setRequested(false); 5458 5459 attachInfo.mHardwareRenderer = null; 5460 attachInfo.mHardwareAccelerated = false; 5461 } 5462 } 5463 5464 public void dispatchFinishInputConnection(InputConnection connection) { 5465 Message msg = mHandler.obtainMessage(MSG_FINISH_INPUT_CONNECTION, connection); 5466 mHandler.sendMessage(msg); 5467 } 5468 5469 public void dispatchResized(Rect frame, Rect overscanInsets, Rect contentInsets, 5470 Rect visibleInsets, boolean reportDraw, Configuration newConfig) { 5471 if (DEBUG_LAYOUT) Log.v(TAG, "Resizing " + this + ": frame=" + frame.toShortString() 5472 + " contentInsets=" + contentInsets.toShortString() 5473 + " visibleInsets=" + visibleInsets.toShortString() 5474 + " reportDraw=" + reportDraw); 5475 Message msg = mHandler.obtainMessage(reportDraw ? MSG_RESIZED_REPORT : MSG_RESIZED); 5476 if (mTranslator != null) { 5477 mTranslator.translateRectInScreenToAppWindow(frame); 5478 mTranslator.translateRectInScreenToAppWindow(overscanInsets); 5479 mTranslator.translateRectInScreenToAppWindow(contentInsets); 5480 mTranslator.translateRectInScreenToAppWindow(visibleInsets); 5481 } 5482 SomeArgs args = SomeArgs.obtain(); 5483 final boolean sameProcessCall = (Binder.getCallingPid() == android.os.Process.myPid()); 5484 args.arg1 = sameProcessCall ? new Rect(frame) : frame; 5485 args.arg2 = sameProcessCall ? new Rect(contentInsets) : contentInsets; 5486 args.arg3 = sameProcessCall ? new Rect(visibleInsets) : visibleInsets; 5487 args.arg4 = sameProcessCall && newConfig != null ? new Configuration(newConfig) : newConfig; 5488 args.arg5 = sameProcessCall ? new Rect(overscanInsets) : overscanInsets; 5489 msg.obj = args; 5490 mHandler.sendMessage(msg); 5491 } 5492 5493 public void dispatchMoved(int newX, int newY) { 5494 if (DEBUG_LAYOUT) Log.v(TAG, "Window moved " + this + ": newX=" + newX + " newY=" + newY); 5495 if (mTranslator != null) { 5496 PointF point = new PointF(newX, newY); 5497 mTranslator.translatePointInScreenToAppWindow(point); 5498 newX = (int) (point.x + 0.5); 5499 newY = (int) (point.y + 0.5); 5500 } 5501 Message msg = mHandler.obtainMessage(MSG_WINDOW_MOVED, newX, newY); 5502 mHandler.sendMessage(msg); 5503 } 5504 5505 /** 5506 * Represents a pending input event that is waiting in a queue. 5507 * 5508 * Input events are processed in serial order by the timestamp specified by 5509 * {@link InputEvent#getEventTimeNano()}. In general, the input dispatcher delivers 5510 * one input event to the application at a time and waits for the application 5511 * to finish handling it before delivering the next one. 5512 * 5513 * However, because the application or IME can synthesize and inject multiple 5514 * key events at a time without going through the input dispatcher, we end up 5515 * needing a queue on the application's side. 5516 */ 5517 private static final class QueuedInputEvent { 5518 public static final int FLAG_DELIVER_POST_IME = 1 << 0; 5519 public static final int FLAG_DEFERRED = 1 << 1; 5520 public static final int FLAG_FINISHED = 1 << 2; 5521 public static final int FLAG_FINISHED_HANDLED = 1 << 3; 5522 public static final int FLAG_RESYNTHESIZED = 1 << 4; 5523 public static final int FLAG_UNHANDLED = 1 << 5; 5524 5525 public QueuedInputEvent mNext; 5526 5527 public InputEvent mEvent; 5528 public InputEventReceiver mReceiver; 5529 public int mFlags; 5530 5531 public boolean shouldSkipIme() { 5532 if ((mFlags & FLAG_DELIVER_POST_IME) != 0) { 5533 return true; 5534 } 5535 return mEvent instanceof MotionEvent 5536 && mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER); 5537 } 5538 5539 public boolean shouldSendToSynthesizer() { 5540 if ((mFlags & FLAG_UNHANDLED) != 0) { 5541 return true; 5542 } 5543 5544 return false; 5545 } 5546 5547 @Override 5548 public String toString() { 5549 StringBuilder sb = new StringBuilder("QueuedInputEvent{flags="); 5550 boolean hasPrevious = false; 5551 hasPrevious = flagToString("DELIVER_POST_IME", FLAG_DELIVER_POST_IME, hasPrevious, sb); 5552 hasPrevious = flagToString("DEFERRED", FLAG_DEFERRED, hasPrevious, sb); 5553 hasPrevious = flagToString("FINISHED", FLAG_FINISHED, hasPrevious, sb); 5554 hasPrevious = flagToString("FINISHED_HANDLED", FLAG_FINISHED_HANDLED, hasPrevious, sb); 5555 hasPrevious = flagToString("RESYNTHESIZED", FLAG_RESYNTHESIZED, hasPrevious, sb); 5556 hasPrevious = flagToString("UNHANDLED", FLAG_UNHANDLED, hasPrevious, sb); 5557 if (!hasPrevious) { 5558 sb.append("0"); 5559 } 5560 sb.append(", hasNextQueuedEvent=" + (mEvent != null ? "true" : "false")); 5561 sb.append(", hasInputEventReceiver=" + (mReceiver != null ? "true" : "false")); 5562 sb.append(", mEvent=" + mEvent + "}"); 5563 return sb.toString(); 5564 } 5565 5566 private boolean flagToString(String name, int flag, 5567 boolean hasPrevious, StringBuilder sb) { 5568 if ((mFlags & flag) != 0) { 5569 if (hasPrevious) { 5570 sb.append("|"); 5571 } 5572 sb.append(name); 5573 return true; 5574 } 5575 return hasPrevious; 5576 } 5577 } 5578 5579 private QueuedInputEvent obtainQueuedInputEvent(InputEvent event, 5580 InputEventReceiver receiver, int flags) { 5581 QueuedInputEvent q = mQueuedInputEventPool; 5582 if (q != null) { 5583 mQueuedInputEventPoolSize -= 1; 5584 mQueuedInputEventPool = q.mNext; 5585 q.mNext = null; 5586 } else { 5587 q = new QueuedInputEvent(); 5588 } 5589 5590 q.mEvent = event; 5591 q.mReceiver = receiver; 5592 q.mFlags = flags; 5593 return q; 5594 } 5595 5596 private void recycleQueuedInputEvent(QueuedInputEvent q) { 5597 q.mEvent = null; 5598 q.mReceiver = null; 5599 5600 if (mQueuedInputEventPoolSize < MAX_QUEUED_INPUT_EVENT_POOL_SIZE) { 5601 mQueuedInputEventPoolSize += 1; 5602 q.mNext = mQueuedInputEventPool; 5603 mQueuedInputEventPool = q; 5604 } 5605 } 5606 5607 void enqueueInputEvent(InputEvent event) { 5608 enqueueInputEvent(event, null, 0, false); 5609 } 5610 5611 void enqueueInputEvent(InputEvent event, 5612 InputEventReceiver receiver, int flags, boolean processImmediately) { 5613 QueuedInputEvent q = obtainQueuedInputEvent(event, receiver, flags); 5614 5615 // Always enqueue the input event in order, regardless of its time stamp. 5616 // We do this because the application or the IME may inject key events 5617 // in response to touch events and we want to ensure that the injected keys 5618 // are processed in the order they were received and we cannot trust that 5619 // the time stamp of injected events are monotonic. 5620 QueuedInputEvent last = mPendingInputEventTail; 5621 if (last == null) { 5622 mPendingInputEventHead = q; 5623 mPendingInputEventTail = q; 5624 } else { 5625 last.mNext = q; 5626 mPendingInputEventTail = q; 5627 } 5628 mPendingInputEventCount += 1; 5629 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 5630 mPendingInputEventCount); 5631 5632 if (processImmediately) { 5633 doProcessInputEvents(); 5634 } else { 5635 scheduleProcessInputEvents(); 5636 } 5637 } 5638 5639 private void scheduleProcessInputEvents() { 5640 if (!mProcessInputEventsScheduled) { 5641 mProcessInputEventsScheduled = true; 5642 Message msg = mHandler.obtainMessage(MSG_PROCESS_INPUT_EVENTS); 5643 msg.setAsynchronous(true); 5644 mHandler.sendMessage(msg); 5645 } 5646 } 5647 5648 void doProcessInputEvents() { 5649 // Deliver all pending input events in the queue. 5650 while (mPendingInputEventHead != null) { 5651 QueuedInputEvent q = mPendingInputEventHead; 5652 mPendingInputEventHead = q.mNext; 5653 if (mPendingInputEventHead == null) { 5654 mPendingInputEventTail = null; 5655 } 5656 q.mNext = null; 5657 5658 mPendingInputEventCount -= 1; 5659 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 5660 mPendingInputEventCount); 5661 5662 deliverInputEvent(q); 5663 } 5664 5665 // We are done processing all input events that we can process right now 5666 // so we can clear the pending flag immediately. 5667 if (mProcessInputEventsScheduled) { 5668 mProcessInputEventsScheduled = false; 5669 mHandler.removeMessages(MSG_PROCESS_INPUT_EVENTS); 5670 } 5671 } 5672 5673 private void deliverInputEvent(QueuedInputEvent q) { 5674 Trace.asyncTraceBegin(Trace.TRACE_TAG_VIEW, "deliverInputEvent", 5675 q.mEvent.getSequenceNumber()); 5676 if (mInputEventConsistencyVerifier != null) { 5677 mInputEventConsistencyVerifier.onInputEvent(q.mEvent, 0); 5678 } 5679 5680 InputStage stage; 5681 if (q.shouldSendToSynthesizer()) { 5682 stage = mSyntheticInputStage; 5683 } else { 5684 stage = q.shouldSkipIme() ? mFirstPostImeInputStage : mFirstInputStage; 5685 } 5686 5687 if (stage != null) { 5688 stage.deliver(q); 5689 } else { 5690 finishInputEvent(q); 5691 } 5692 } 5693 5694 private void finishInputEvent(QueuedInputEvent q) { 5695 Trace.asyncTraceEnd(Trace.TRACE_TAG_VIEW, "deliverInputEvent", 5696 q.mEvent.getSequenceNumber()); 5697 5698 if (q.mReceiver != null) { 5699 boolean handled = (q.mFlags & QueuedInputEvent.FLAG_FINISHED_HANDLED) != 0; 5700 q.mReceiver.finishInputEvent(q.mEvent, handled); 5701 } else { 5702 q.mEvent.recycleIfNeededAfterDispatch(); 5703 } 5704 5705 recycleQueuedInputEvent(q); 5706 } 5707 5708 static boolean isTerminalInputEvent(InputEvent event) { 5709 if (event instanceof KeyEvent) { 5710 final KeyEvent keyEvent = (KeyEvent)event; 5711 return keyEvent.getAction() == KeyEvent.ACTION_UP; 5712 } else { 5713 final MotionEvent motionEvent = (MotionEvent)event; 5714 final int action = motionEvent.getAction(); 5715 return action == MotionEvent.ACTION_UP 5716 || action == MotionEvent.ACTION_CANCEL 5717 || action == MotionEvent.ACTION_HOVER_EXIT; 5718 } 5719 } 5720 5721 void scheduleConsumeBatchedInput() { 5722 if (!mConsumeBatchedInputScheduled) { 5723 mConsumeBatchedInputScheduled = true; 5724 mChoreographer.postCallback(Choreographer.CALLBACK_INPUT, 5725 mConsumedBatchedInputRunnable, null); 5726 } 5727 } 5728 5729 void unscheduleConsumeBatchedInput() { 5730 if (mConsumeBatchedInputScheduled) { 5731 mConsumeBatchedInputScheduled = false; 5732 mChoreographer.removeCallbacks(Choreographer.CALLBACK_INPUT, 5733 mConsumedBatchedInputRunnable, null); 5734 } 5735 } 5736 5737 void scheduleConsumeBatchedInputImmediately() { 5738 if (!mConsumeBatchedInputImmediatelyScheduled) { 5739 unscheduleConsumeBatchedInput(); 5740 mConsumeBatchedInputImmediatelyScheduled = true; 5741 mHandler.post(mConsumeBatchedInputImmediatelyRunnable); 5742 } 5743 } 5744 5745 void doConsumeBatchedInput(long frameTimeNanos) { 5746 if (mConsumeBatchedInputScheduled) { 5747 mConsumeBatchedInputScheduled = false; 5748 if (mInputEventReceiver != null) { 5749 if (mInputEventReceiver.consumeBatchedInputEvents(frameTimeNanos) 5750 && frameTimeNanos != -1) { 5751 // If we consumed a batch here, we want to go ahead and schedule the 5752 // consumption of batched input events on the next frame. Otherwise, we would 5753 // wait until we have more input events pending and might get starved by other 5754 // things occurring in the process. If the frame time is -1, however, then 5755 // we're in a non-batching mode, so there's no need to schedule this. 5756 scheduleConsumeBatchedInput(); 5757 } 5758 } 5759 doProcessInputEvents(); 5760 } 5761 } 5762 5763 final class TraversalRunnable implements Runnable { 5764 @Override 5765 public void run() { 5766 doTraversal(); 5767 } 5768 } 5769 final TraversalRunnable mTraversalRunnable = new TraversalRunnable(); 5770 5771 final class WindowInputEventReceiver extends InputEventReceiver { 5772 public WindowInputEventReceiver(InputChannel inputChannel, Looper looper) { 5773 super(inputChannel, looper); 5774 } 5775 5776 @Override 5777 public void onInputEvent(InputEvent event) { 5778 enqueueInputEvent(event, this, 0, true); 5779 } 5780 5781 @Override 5782 public void onBatchedInputEventPending() { 5783 if (mUnbufferedInputDispatch) { 5784 super.onBatchedInputEventPending(); 5785 } else { 5786 scheduleConsumeBatchedInput(); 5787 } 5788 } 5789 5790 @Override 5791 public void dispose() { 5792 unscheduleConsumeBatchedInput(); 5793 super.dispose(); 5794 } 5795 } 5796 WindowInputEventReceiver mInputEventReceiver; 5797 5798 final class ConsumeBatchedInputRunnable implements Runnable { 5799 @Override 5800 public void run() { 5801 doConsumeBatchedInput(mChoreographer.getFrameTimeNanos()); 5802 } 5803 } 5804 final ConsumeBatchedInputRunnable mConsumedBatchedInputRunnable = 5805 new ConsumeBatchedInputRunnable(); 5806 boolean mConsumeBatchedInputScheduled; 5807 5808 final class ConsumeBatchedInputImmediatelyRunnable implements Runnable { 5809 @Override 5810 public void run() { 5811 doConsumeBatchedInput(-1); 5812 } 5813 } 5814 final ConsumeBatchedInputImmediatelyRunnable mConsumeBatchedInputImmediatelyRunnable = 5815 new ConsumeBatchedInputImmediatelyRunnable(); 5816 boolean mConsumeBatchedInputImmediatelyScheduled; 5817 5818 final class InvalidateOnAnimationRunnable implements Runnable { 5819 private boolean mPosted; 5820 private final ArrayList<View> mViews = new ArrayList<View>(); 5821 private final ArrayList<AttachInfo.InvalidateInfo> mViewRects = 5822 new ArrayList<AttachInfo.InvalidateInfo>(); 5823 private View[] mTempViews; 5824 private AttachInfo.InvalidateInfo[] mTempViewRects; 5825 5826 public void addView(View view) { 5827 synchronized (this) { 5828 mViews.add(view); 5829 postIfNeededLocked(); 5830 } 5831 } 5832 5833 public void addViewRect(AttachInfo.InvalidateInfo info) { 5834 synchronized (this) { 5835 mViewRects.add(info); 5836 postIfNeededLocked(); 5837 } 5838 } 5839 5840 public void removeView(View view) { 5841 synchronized (this) { 5842 mViews.remove(view); 5843 5844 for (int i = mViewRects.size(); i-- > 0; ) { 5845 AttachInfo.InvalidateInfo info = mViewRects.get(i); 5846 if (info.target == view) { 5847 mViewRects.remove(i); 5848 info.recycle(); 5849 } 5850 } 5851 5852 if (mPosted && mViews.isEmpty() && mViewRects.isEmpty()) { 5853 mChoreographer.removeCallbacks(Choreographer.CALLBACK_ANIMATION, this, null); 5854 mPosted = false; 5855 } 5856 } 5857 } 5858 5859 @Override 5860 public void run() { 5861 final int viewCount; 5862 final int viewRectCount; 5863 synchronized (this) { 5864 mPosted = false; 5865 5866 viewCount = mViews.size(); 5867 if (viewCount != 0) { 5868 mTempViews = mViews.toArray(mTempViews != null 5869 ? mTempViews : new View[viewCount]); 5870 mViews.clear(); 5871 } 5872 5873 viewRectCount = mViewRects.size(); 5874 if (viewRectCount != 0) { 5875 mTempViewRects = mViewRects.toArray(mTempViewRects != null 5876 ? mTempViewRects : new AttachInfo.InvalidateInfo[viewRectCount]); 5877 mViewRects.clear(); 5878 } 5879 } 5880 5881 for (int i = 0; i < viewCount; i++) { 5882 mTempViews[i].invalidate(); 5883 mTempViews[i] = null; 5884 } 5885 5886 for (int i = 0; i < viewRectCount; i++) { 5887 final View.AttachInfo.InvalidateInfo info = mTempViewRects[i]; 5888 info.target.invalidate(info.left, info.top, info.right, info.bottom); 5889 info.recycle(); 5890 } 5891 } 5892 5893 private void postIfNeededLocked() { 5894 if (!mPosted) { 5895 mChoreographer.postCallback(Choreographer.CALLBACK_ANIMATION, this, null); 5896 mPosted = true; 5897 } 5898 } 5899 } 5900 final InvalidateOnAnimationRunnable mInvalidateOnAnimationRunnable = 5901 new InvalidateOnAnimationRunnable(); 5902 5903 public void dispatchInvalidateDelayed(View view, long delayMilliseconds) { 5904 Message msg = mHandler.obtainMessage(MSG_INVALIDATE, view); 5905 mHandler.sendMessageDelayed(msg, delayMilliseconds); 5906 } 5907 5908 public void dispatchInvalidateRectDelayed(AttachInfo.InvalidateInfo info, 5909 long delayMilliseconds) { 5910 final Message msg = mHandler.obtainMessage(MSG_INVALIDATE_RECT, info); 5911 mHandler.sendMessageDelayed(msg, delayMilliseconds); 5912 } 5913 5914 public void dispatchInvalidateOnAnimation(View view) { 5915 mInvalidateOnAnimationRunnable.addView(view); 5916 } 5917 5918 public void dispatchInvalidateRectOnAnimation(AttachInfo.InvalidateInfo info) { 5919 mInvalidateOnAnimationRunnable.addViewRect(info); 5920 } 5921 5922 public void cancelInvalidate(View view) { 5923 mHandler.removeMessages(MSG_INVALIDATE, view); 5924 // fixme: might leak the AttachInfo.InvalidateInfo objects instead of returning 5925 // them to the pool 5926 mHandler.removeMessages(MSG_INVALIDATE_RECT, view); 5927 mInvalidateOnAnimationRunnable.removeView(view); 5928 } 5929 5930 public void dispatchInputEvent(InputEvent event) { 5931 dispatchInputEvent(event, null); 5932 } 5933 5934 public void dispatchInputEvent(InputEvent event, InputEventReceiver receiver) { 5935 SomeArgs args = SomeArgs.obtain(); 5936 args.arg1 = event; 5937 args.arg2 = receiver; 5938 Message msg = mHandler.obtainMessage(MSG_DISPATCH_INPUT_EVENT, args); 5939 msg.setAsynchronous(true); 5940 mHandler.sendMessage(msg); 5941 } 5942 5943 public void synthesizeInputEvent(InputEvent event) { 5944 Message msg = mHandler.obtainMessage(MSG_SYNTHESIZE_INPUT_EVENT, event); 5945 msg.setAsynchronous(true); 5946 mHandler.sendMessage(msg); 5947 } 5948 5949 public void dispatchKeyFromIme(KeyEvent event) { 5950 Message msg = mHandler.obtainMessage(MSG_DISPATCH_KEY_FROM_IME, event); 5951 msg.setAsynchronous(true); 5952 mHandler.sendMessage(msg); 5953 } 5954 5955 /** 5956 * Reinject unhandled {@link InputEvent}s in order to synthesize fallbacks events. 5957 * 5958 * Note that it is the responsibility of the caller of this API to recycle the InputEvent it 5959 * passes in. 5960 */ 5961 public void dispatchUnhandledInputEvent(InputEvent event) { 5962 if (event instanceof MotionEvent) { 5963 event = MotionEvent.obtain((MotionEvent) event); 5964 } 5965 synthesizeInputEvent(event); 5966 } 5967 5968 public void dispatchAppVisibility(boolean visible) { 5969 Message msg = mHandler.obtainMessage(MSG_DISPATCH_APP_VISIBILITY); 5970 msg.arg1 = visible ? 1 : 0; 5971 mHandler.sendMessage(msg); 5972 } 5973 5974 public void dispatchGetNewSurface() { 5975 Message msg = mHandler.obtainMessage(MSG_DISPATCH_GET_NEW_SURFACE); 5976 mHandler.sendMessage(msg); 5977 } 5978 5979 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 5980 Message msg = Message.obtain(); 5981 msg.what = MSG_WINDOW_FOCUS_CHANGED; 5982 msg.arg1 = hasFocus ? 1 : 0; 5983 msg.arg2 = inTouchMode ? 1 : 0; 5984 mHandler.sendMessage(msg); 5985 } 5986 5987 public void dispatchCloseSystemDialogs(String reason) { 5988 Message msg = Message.obtain(); 5989 msg.what = MSG_CLOSE_SYSTEM_DIALOGS; 5990 msg.obj = reason; 5991 mHandler.sendMessage(msg); 5992 } 5993 5994 public void dispatchDragEvent(DragEvent event) { 5995 final int what; 5996 if (event.getAction() == DragEvent.ACTION_DRAG_LOCATION) { 5997 what = MSG_DISPATCH_DRAG_LOCATION_EVENT; 5998 mHandler.removeMessages(what); 5999 } else { 6000 what = MSG_DISPATCH_DRAG_EVENT; 6001 } 6002 Message msg = mHandler.obtainMessage(what, event); 6003 mHandler.sendMessage(msg); 6004 } 6005 6006 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 6007 int localValue, int localChanges) { 6008 SystemUiVisibilityInfo args = new SystemUiVisibilityInfo(); 6009 args.seq = seq; 6010 args.globalVisibility = globalVisibility; 6011 args.localValue = localValue; 6012 args.localChanges = localChanges; 6013 mHandler.sendMessage(mHandler.obtainMessage(MSG_DISPATCH_SYSTEM_UI_VISIBILITY, args)); 6014 } 6015 6016 public void dispatchDoneAnimating() { 6017 mHandler.sendEmptyMessage(MSG_DISPATCH_DONE_ANIMATING); 6018 } 6019 6020 public void dispatchCheckFocus() { 6021 if (!mHandler.hasMessages(MSG_CHECK_FOCUS)) { 6022 // This will result in a call to checkFocus() below. 6023 mHandler.sendEmptyMessage(MSG_CHECK_FOCUS); 6024 } 6025 } 6026 6027 /** 6028 * Post a callback to send a 6029 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 6030 * This event is send at most once every 6031 * {@link ViewConfiguration#getSendRecurringAccessibilityEventsInterval()}. 6032 */ 6033 private void postSendWindowContentChangedCallback(View source, int changeType) { 6034 if (mSendWindowContentChangedAccessibilityEvent == null) { 6035 mSendWindowContentChangedAccessibilityEvent = 6036 new SendWindowContentChangedAccessibilityEvent(); 6037 } 6038 mSendWindowContentChangedAccessibilityEvent.runOrPost(source, changeType); 6039 } 6040 6041 /** 6042 * Remove a posted callback to send a 6043 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 6044 */ 6045 private void removeSendWindowContentChangedCallback() { 6046 if (mSendWindowContentChangedAccessibilityEvent != null) { 6047 mHandler.removeCallbacks(mSendWindowContentChangedAccessibilityEvent); 6048 } 6049 } 6050 6051 @Override 6052 public boolean showContextMenuForChild(View originalView) { 6053 return false; 6054 } 6055 6056 @Override 6057 public ActionMode startActionModeForChild(View originalView, ActionMode.Callback callback) { 6058 return null; 6059 } 6060 6061 @Override 6062 public void createContextMenu(ContextMenu menu) { 6063 } 6064 6065 @Override 6066 public void childDrawableStateChanged(View child) { 6067 } 6068 6069 @Override 6070 public boolean requestSendAccessibilityEvent(View child, AccessibilityEvent event) { 6071 if (mView == null) { 6072 return false; 6073 } 6074 // Intercept accessibility focus events fired by virtual nodes to keep 6075 // track of accessibility focus position in such nodes. 6076 final int eventType = event.getEventType(); 6077 switch (eventType) { 6078 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUSED: { 6079 final long sourceNodeId = event.getSourceNodeId(); 6080 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 6081 sourceNodeId); 6082 View source = mView.findViewByAccessibilityId(accessibilityViewId); 6083 if (source != null) { 6084 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 6085 if (provider != null) { 6086 AccessibilityNodeInfo node = provider.createAccessibilityNodeInfo( 6087 AccessibilityNodeInfo.getVirtualDescendantId(sourceNodeId)); 6088 setAccessibilityFocus(source, node); 6089 } 6090 } 6091 } break; 6092 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUS_CLEARED: { 6093 final long sourceNodeId = event.getSourceNodeId(); 6094 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 6095 sourceNodeId); 6096 View source = mView.findViewByAccessibilityId(accessibilityViewId); 6097 if (source != null) { 6098 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 6099 if (provider != null) { 6100 setAccessibilityFocus(null, null); 6101 } 6102 } 6103 } break; 6104 } 6105 mAccessibilityManager.sendAccessibilityEvent(event); 6106 return true; 6107 } 6108 6109 @Override 6110 public void notifySubtreeAccessibilityStateChanged(View child, View source, int changeType) { 6111 postSendWindowContentChangedCallback(source, changeType); 6112 } 6113 6114 @Override 6115 public boolean canResolveLayoutDirection() { 6116 return true; 6117 } 6118 6119 @Override 6120 public boolean isLayoutDirectionResolved() { 6121 return true; 6122 } 6123 6124 @Override 6125 public int getLayoutDirection() { 6126 return View.LAYOUT_DIRECTION_RESOLVED_DEFAULT; 6127 } 6128 6129 @Override 6130 public boolean canResolveTextDirection() { 6131 return true; 6132 } 6133 6134 @Override 6135 public boolean isTextDirectionResolved() { 6136 return true; 6137 } 6138 6139 @Override 6140 public int getTextDirection() { 6141 return View.TEXT_DIRECTION_RESOLVED_DEFAULT; 6142 } 6143 6144 @Override 6145 public boolean canResolveTextAlignment() { 6146 return true; 6147 } 6148 6149 @Override 6150 public boolean isTextAlignmentResolved() { 6151 return true; 6152 } 6153 6154 @Override 6155 public int getTextAlignment() { 6156 return View.TEXT_ALIGNMENT_RESOLVED_DEFAULT; 6157 } 6158 6159 private View getCommonPredecessor(View first, View second) { 6160 if (mAttachInfo != null) { 6161 if (mTempHashSet == null) { 6162 mTempHashSet = new HashSet<View>(); 6163 } 6164 HashSet<View> seen = mTempHashSet; 6165 seen.clear(); 6166 View firstCurrent = first; 6167 while (firstCurrent != null) { 6168 seen.add(firstCurrent); 6169 ViewParent firstCurrentParent = firstCurrent.mParent; 6170 if (firstCurrentParent instanceof View) { 6171 firstCurrent = (View) firstCurrentParent; 6172 } else { 6173 firstCurrent = null; 6174 } 6175 } 6176 View secondCurrent = second; 6177 while (secondCurrent != null) { 6178 if (seen.contains(secondCurrent)) { 6179 seen.clear(); 6180 return secondCurrent; 6181 } 6182 ViewParent secondCurrentParent = secondCurrent.mParent; 6183 if (secondCurrentParent instanceof View) { 6184 secondCurrent = (View) secondCurrentParent; 6185 } else { 6186 secondCurrent = null; 6187 } 6188 } 6189 seen.clear(); 6190 } 6191 return null; 6192 } 6193 6194 void checkThread() { 6195 if (mThread != Thread.currentThread()) { 6196 throw new CalledFromWrongThreadException( 6197 "Only the original thread that created a view hierarchy can touch its views."); 6198 } 6199 } 6200 6201 @Override 6202 public void requestDisallowInterceptTouchEvent(boolean disallowIntercept) { 6203 // ViewAncestor never intercepts touch event, so this can be a no-op 6204 } 6205 6206 @Override 6207 public boolean requestChildRectangleOnScreen(View child, Rect rectangle, boolean immediate) { 6208 final boolean scrolled = scrollToRectOrFocus(rectangle, immediate); 6209 if (rectangle != null) { 6210 mTempRect.set(rectangle); 6211 mTempRect.offset(0, -mCurScrollY); 6212 mTempRect.offset(mAttachInfo.mWindowLeft, mAttachInfo.mWindowTop); 6213 try { 6214 mWindowSession.onRectangleOnScreenRequested(mWindow, mTempRect); 6215 } catch (RemoteException re) { 6216 /* ignore */ 6217 } 6218 } 6219 return scrolled; 6220 } 6221 6222 @Override 6223 public void childHasTransientStateChanged(View child, boolean hasTransientState) { 6224 // Do nothing. 6225 } 6226 6227 @Override 6228 public boolean onStartNestedScroll(View child, View target, int nestedScrollAxes) { 6229 return false; 6230 } 6231 6232 @Override 6233 public void onStopNestedScroll(View target) { 6234 } 6235 6236 @Override 6237 public void onNestedScrollAccepted(View child, View target, int nestedScrollAxes) { 6238 } 6239 6240 @Override 6241 public void onNestedScroll(View target, int dxConsumed, int dyConsumed, 6242 int dxUnconsumed, int dyUnconsumed) { 6243 } 6244 6245 @Override 6246 public void onNestedPreScroll(View target, int dx, int dy, int[] consumed) { 6247 } 6248 6249 @Override 6250 public boolean onNestedFling(View target, float velocityX, float velocityY, boolean consumed) { 6251 return false; 6252 } 6253 6254 void changeCanvasOpacity(boolean opaque) { 6255 Log.d(TAG, "changeCanvasOpacity: opaque=" + opaque); 6256 if (mAttachInfo.mHardwareRenderer != null) { 6257 mAttachInfo.mHardwareRenderer.setOpaque(opaque); 6258 } 6259 } 6260 6261 class TakenSurfaceHolder extends BaseSurfaceHolder { 6262 @Override 6263 public boolean onAllowLockCanvas() { 6264 return mDrawingAllowed; 6265 } 6266 6267 @Override 6268 public void onRelayoutContainer() { 6269 // Not currently interesting -- from changing between fixed and layout size. 6270 } 6271 6272 @Override 6273 public void setFormat(int format) { 6274 ((RootViewSurfaceTaker)mView).setSurfaceFormat(format); 6275 } 6276 6277 @Override 6278 public void setType(int type) { 6279 ((RootViewSurfaceTaker)mView).setSurfaceType(type); 6280 } 6281 6282 @Override 6283 public void onUpdateSurface() { 6284 // We take care of format and type changes on our own. 6285 throw new IllegalStateException("Shouldn't be here"); 6286 } 6287 6288 @Override 6289 public boolean isCreating() { 6290 return mIsCreating; 6291 } 6292 6293 @Override 6294 public void setFixedSize(int width, int height) { 6295 throw new UnsupportedOperationException( 6296 "Currently only support sizing from layout"); 6297 } 6298 6299 @Override 6300 public void setKeepScreenOn(boolean screenOn) { 6301 ((RootViewSurfaceTaker)mView).setSurfaceKeepScreenOn(screenOn); 6302 } 6303 } 6304 6305 static class W extends IWindow.Stub { 6306 private final WeakReference<ViewRootImpl> mViewAncestor; 6307 private final IWindowSession mWindowSession; 6308 6309 W(ViewRootImpl viewAncestor) { 6310 mViewAncestor = new WeakReference<ViewRootImpl>(viewAncestor); 6311 mWindowSession = viewAncestor.mWindowSession; 6312 } 6313 6314 @Override 6315 public void resized(Rect frame, Rect overscanInsets, Rect contentInsets, 6316 Rect visibleInsets, boolean reportDraw, Configuration newConfig) { 6317 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6318 if (viewAncestor != null) { 6319 viewAncestor.dispatchResized(frame, overscanInsets, contentInsets, 6320 visibleInsets, reportDraw, newConfig); 6321 } 6322 } 6323 6324 @Override 6325 public void moved(int newX, int newY) { 6326 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6327 if (viewAncestor != null) { 6328 viewAncestor.dispatchMoved(newX, newY); 6329 } 6330 } 6331 6332 @Override 6333 public void dispatchAppVisibility(boolean visible) { 6334 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6335 if (viewAncestor != null) { 6336 viewAncestor.dispatchAppVisibility(visible); 6337 } 6338 } 6339 6340 @Override 6341 public void dispatchGetNewSurface() { 6342 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6343 if (viewAncestor != null) { 6344 viewAncestor.dispatchGetNewSurface(); 6345 } 6346 } 6347 6348 @Override 6349 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 6350 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6351 if (viewAncestor != null) { 6352 viewAncestor.windowFocusChanged(hasFocus, inTouchMode); 6353 } 6354 } 6355 6356 private static int checkCallingPermission(String permission) { 6357 try { 6358 return ActivityManagerNative.getDefault().checkPermission( 6359 permission, Binder.getCallingPid(), Binder.getCallingUid()); 6360 } catch (RemoteException e) { 6361 return PackageManager.PERMISSION_DENIED; 6362 } 6363 } 6364 6365 @Override 6366 public void executeCommand(String command, String parameters, ParcelFileDescriptor out) { 6367 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6368 if (viewAncestor != null) { 6369 final View view = viewAncestor.mView; 6370 if (view != null) { 6371 if (checkCallingPermission(Manifest.permission.DUMP) != 6372 PackageManager.PERMISSION_GRANTED) { 6373 throw new SecurityException("Insufficient permissions to invoke" 6374 + " executeCommand() from pid=" + Binder.getCallingPid() 6375 + ", uid=" + Binder.getCallingUid()); 6376 } 6377 6378 OutputStream clientStream = null; 6379 try { 6380 clientStream = new ParcelFileDescriptor.AutoCloseOutputStream(out); 6381 ViewDebug.dispatchCommand(view, command, parameters, clientStream); 6382 } catch (IOException e) { 6383 e.printStackTrace(); 6384 } finally { 6385 if (clientStream != null) { 6386 try { 6387 clientStream.close(); 6388 } catch (IOException e) { 6389 e.printStackTrace(); 6390 } 6391 } 6392 } 6393 } 6394 } 6395 } 6396 6397 @Override 6398 public void closeSystemDialogs(String reason) { 6399 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6400 if (viewAncestor != null) { 6401 viewAncestor.dispatchCloseSystemDialogs(reason); 6402 } 6403 } 6404 6405 @Override 6406 public void dispatchWallpaperOffsets(float x, float y, float xStep, float yStep, 6407 boolean sync) { 6408 if (sync) { 6409 try { 6410 mWindowSession.wallpaperOffsetsComplete(asBinder()); 6411 } catch (RemoteException e) { 6412 } 6413 } 6414 } 6415 6416 @Override 6417 public void dispatchWallpaperCommand(String action, int x, int y, 6418 int z, Bundle extras, boolean sync) { 6419 if (sync) { 6420 try { 6421 mWindowSession.wallpaperCommandComplete(asBinder(), null); 6422 } catch (RemoteException e) { 6423 } 6424 } 6425 } 6426 6427 /* Drag/drop */ 6428 @Override 6429 public void dispatchDragEvent(DragEvent event) { 6430 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6431 if (viewAncestor != null) { 6432 viewAncestor.dispatchDragEvent(event); 6433 } 6434 } 6435 6436 @Override 6437 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 6438 int localValue, int localChanges) { 6439 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6440 if (viewAncestor != null) { 6441 viewAncestor.dispatchSystemUiVisibilityChanged(seq, globalVisibility, 6442 localValue, localChanges); 6443 } 6444 } 6445 6446 @Override 6447 public void doneAnimating() { 6448 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6449 if (viewAncestor != null) { 6450 viewAncestor.dispatchDoneAnimating(); 6451 } 6452 } 6453 } 6454 6455 public static final class CalledFromWrongThreadException extends AndroidRuntimeException { 6456 public CalledFromWrongThreadException(String msg) { 6457 super(msg); 6458 } 6459 } 6460 6461 static RunQueue getRunQueue() { 6462 RunQueue rq = sRunQueues.get(); 6463 if (rq != null) { 6464 return rq; 6465 } 6466 rq = new RunQueue(); 6467 sRunQueues.set(rq); 6468 return rq; 6469 } 6470 6471 /** 6472 * The run queue is used to enqueue pending work from Views when no Handler is 6473 * attached. The work is executed during the next call to performTraversals on 6474 * the thread. 6475 * @hide 6476 */ 6477 static final class RunQueue { 6478 private final ArrayList<HandlerAction> mActions = new ArrayList<HandlerAction>(); 6479 6480 void post(Runnable action) { 6481 postDelayed(action, 0); 6482 } 6483 6484 void postDelayed(Runnable action, long delayMillis) { 6485 HandlerAction handlerAction = new HandlerAction(); 6486 handlerAction.action = action; 6487 handlerAction.delay = delayMillis; 6488 6489 synchronized (mActions) { 6490 mActions.add(handlerAction); 6491 } 6492 } 6493 6494 void removeCallbacks(Runnable action) { 6495 final HandlerAction handlerAction = new HandlerAction(); 6496 handlerAction.action = action; 6497 6498 synchronized (mActions) { 6499 final ArrayList<HandlerAction> actions = mActions; 6500 6501 while (actions.remove(handlerAction)) { 6502 // Keep going 6503 } 6504 } 6505 } 6506 6507 void executeActions(Handler handler) { 6508 synchronized (mActions) { 6509 final ArrayList<HandlerAction> actions = mActions; 6510 final int count = actions.size(); 6511 6512 for (int i = 0; i < count; i++) { 6513 final HandlerAction handlerAction = actions.get(i); 6514 handler.postDelayed(handlerAction.action, handlerAction.delay); 6515 } 6516 6517 actions.clear(); 6518 } 6519 } 6520 6521 private static class HandlerAction { 6522 Runnable action; 6523 long delay; 6524 6525 @Override 6526 public boolean equals(Object o) { 6527 if (this == o) return true; 6528 if (o == null || getClass() != o.getClass()) return false; 6529 6530 HandlerAction that = (HandlerAction) o; 6531 return !(action != null ? !action.equals(that.action) : that.action != null); 6532 6533 } 6534 6535 @Override 6536 public int hashCode() { 6537 int result = action != null ? action.hashCode() : 0; 6538 result = 31 * result + (int) (delay ^ (delay >>> 32)); 6539 return result; 6540 } 6541 } 6542 } 6543 6544 /** 6545 * Class for managing the accessibility interaction connection 6546 * based on the global accessibility state. 6547 */ 6548 final class AccessibilityInteractionConnectionManager 6549 implements AccessibilityStateChangeListener { 6550 @Override 6551 public void onAccessibilityStateChanged(boolean enabled) { 6552 if (enabled) { 6553 ensureConnection(); 6554 if (mAttachInfo != null && mAttachInfo.mHasWindowFocus) { 6555 mView.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 6556 View focusedView = mView.findFocus(); 6557 if (focusedView != null && focusedView != mView) { 6558 focusedView.sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_FOCUSED); 6559 } 6560 } 6561 } else { 6562 ensureNoConnection(); 6563 mHandler.obtainMessage(MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST).sendToTarget(); 6564 } 6565 } 6566 6567 public void ensureConnection() { 6568 if (mAttachInfo != null) { 6569 final boolean registered = 6570 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED_ITEM_ID; 6571 if (!registered) { 6572 mAttachInfo.mAccessibilityWindowId = 6573 mAccessibilityManager.addAccessibilityInteractionConnection(mWindow, 6574 new AccessibilityInteractionConnection(ViewRootImpl.this)); 6575 } 6576 } 6577 } 6578 6579 public void ensureNoConnection() { 6580 final boolean registered = 6581 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED_ITEM_ID; 6582 if (registered) { 6583 mAttachInfo.mAccessibilityWindowId = AccessibilityNodeInfo.UNDEFINED_ITEM_ID; 6584 mAccessibilityManager.removeAccessibilityInteractionConnection(mWindow); 6585 } 6586 } 6587 } 6588 6589 /** 6590 * This class is an interface this ViewAncestor provides to the 6591 * AccessibilityManagerService to the latter can interact with 6592 * the view hierarchy in this ViewAncestor. 6593 */ 6594 static final class AccessibilityInteractionConnection 6595 extends IAccessibilityInteractionConnection.Stub { 6596 private final WeakReference<ViewRootImpl> mViewRootImpl; 6597 6598 AccessibilityInteractionConnection(ViewRootImpl viewRootImpl) { 6599 mViewRootImpl = new WeakReference<ViewRootImpl>(viewRootImpl); 6600 } 6601 6602 @Override 6603 public void findAccessibilityNodeInfoByAccessibilityId(long accessibilityNodeId, 6604 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 6605 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6606 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6607 if (viewRootImpl != null && viewRootImpl.mView != null) { 6608 viewRootImpl.getAccessibilityInteractionController() 6609 .findAccessibilityNodeInfoByAccessibilityIdClientThread(accessibilityNodeId, 6610 interactionId, callback, flags, interrogatingPid, interrogatingTid, 6611 spec); 6612 } else { 6613 // We cannot make the call and notify the caller so it does not wait. 6614 try { 6615 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 6616 } catch (RemoteException re) { 6617 /* best effort - ignore */ 6618 } 6619 } 6620 } 6621 6622 @Override 6623 public void performAccessibilityAction(long accessibilityNodeId, int action, 6624 Bundle arguments, int interactionId, 6625 IAccessibilityInteractionConnectionCallback callback, int flags, 6626 int interogatingPid, long interrogatingTid) { 6627 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6628 if (viewRootImpl != null && viewRootImpl.mView != null) { 6629 viewRootImpl.getAccessibilityInteractionController() 6630 .performAccessibilityActionClientThread(accessibilityNodeId, action, arguments, 6631 interactionId, callback, flags, interogatingPid, interrogatingTid); 6632 } else { 6633 // We cannot make the call and notify the caller so it does not wait. 6634 try { 6635 callback.setPerformAccessibilityActionResult(false, interactionId); 6636 } catch (RemoteException re) { 6637 /* best effort - ignore */ 6638 } 6639 } 6640 } 6641 6642 @Override 6643 public void findAccessibilityNodeInfosByViewId(long accessibilityNodeId, 6644 String viewId, int interactionId, 6645 IAccessibilityInteractionConnectionCallback callback, int flags, 6646 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6647 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6648 if (viewRootImpl != null && viewRootImpl.mView != null) { 6649 viewRootImpl.getAccessibilityInteractionController() 6650 .findAccessibilityNodeInfosByViewIdClientThread(accessibilityNodeId, 6651 viewId, interactionId, callback, flags, interrogatingPid, 6652 interrogatingTid, spec); 6653 } else { 6654 // We cannot make the call and notify the caller so it does not wait. 6655 try { 6656 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6657 } catch (RemoteException re) { 6658 /* best effort - ignore */ 6659 } 6660 } 6661 } 6662 6663 @Override 6664 public void findAccessibilityNodeInfosByText(long accessibilityNodeId, String text, 6665 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 6666 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6667 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6668 if (viewRootImpl != null && viewRootImpl.mView != null) { 6669 viewRootImpl.getAccessibilityInteractionController() 6670 .findAccessibilityNodeInfosByTextClientThread(accessibilityNodeId, text, 6671 interactionId, callback, flags, interrogatingPid, interrogatingTid, 6672 spec); 6673 } else { 6674 // We cannot make the call and notify the caller so it does not wait. 6675 try { 6676 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 6677 } catch (RemoteException re) { 6678 /* best effort - ignore */ 6679 } 6680 } 6681 } 6682 6683 @Override 6684 public void findFocus(long accessibilityNodeId, int focusType, int interactionId, 6685 IAccessibilityInteractionConnectionCallback callback, int flags, 6686 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6687 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6688 if (viewRootImpl != null && viewRootImpl.mView != null) { 6689 viewRootImpl.getAccessibilityInteractionController() 6690 .findFocusClientThread(accessibilityNodeId, focusType, interactionId, callback, 6691 flags, interrogatingPid, interrogatingTid, spec); 6692 } else { 6693 // We cannot make the call and notify the caller so it does not wait. 6694 try { 6695 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6696 } catch (RemoteException re) { 6697 /* best effort - ignore */ 6698 } 6699 } 6700 } 6701 6702 @Override 6703 public void focusSearch(long accessibilityNodeId, int direction, int interactionId, 6704 IAccessibilityInteractionConnectionCallback callback, int flags, 6705 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6706 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6707 if (viewRootImpl != null && viewRootImpl.mView != null) { 6708 viewRootImpl.getAccessibilityInteractionController() 6709 .focusSearchClientThread(accessibilityNodeId, direction, interactionId, 6710 callback, flags, interrogatingPid, interrogatingTid, spec); 6711 } else { 6712 // We cannot make the call and notify the caller so it does not wait. 6713 try { 6714 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6715 } catch (RemoteException re) { 6716 /* best effort - ignore */ 6717 } 6718 } 6719 } 6720 } 6721 6722 private class SendWindowContentChangedAccessibilityEvent implements Runnable { 6723 private int mChangeTypes = 0; 6724 6725 public View mSource; 6726 public long mLastEventTimeMillis; 6727 6728 @Override 6729 public void run() { 6730 // The accessibility may be turned off while we were waiting so check again. 6731 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 6732 mLastEventTimeMillis = SystemClock.uptimeMillis(); 6733 AccessibilityEvent event = AccessibilityEvent.obtain(); 6734 event.setEventType(AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED); 6735 event.setContentChangeTypes(mChangeTypes); 6736 mSource.sendAccessibilityEventUnchecked(event); 6737 } else { 6738 mLastEventTimeMillis = 0; 6739 } 6740 // In any case reset to initial state. 6741 mSource.resetSubtreeAccessibilityStateChanged(); 6742 mSource = null; 6743 mChangeTypes = 0; 6744 } 6745 6746 public void runOrPost(View source, int changeType) { 6747 if (mSource != null) { 6748 // If there is no common predecessor, then mSource points to 6749 // a removed view, hence in this case always prefer the source. 6750 View predecessor = getCommonPredecessor(mSource, source); 6751 mSource = (predecessor != null) ? predecessor : source; 6752 mChangeTypes |= changeType; 6753 return; 6754 } 6755 mSource = source; 6756 mChangeTypes = changeType; 6757 final long timeSinceLastMillis = SystemClock.uptimeMillis() - mLastEventTimeMillis; 6758 final long minEventIntevalMillis = 6759 ViewConfiguration.getSendRecurringAccessibilityEventsInterval(); 6760 if (timeSinceLastMillis >= minEventIntevalMillis) { 6761 mSource.removeCallbacks(this); 6762 run(); 6763 } else { 6764 mSource.postDelayed(this, minEventIntevalMillis - timeSinceLastMillis); 6765 } 6766 } 6767 } 6768} 6769