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 17 package android.view; 18 19 import android.Manifest; 20 import android.animation.LayoutTransition; 21 import android.app.ActivityManagerNative; 22 import android.content.ClipDescription; 23 import android.content.ComponentCallbacks; 24 import android.content.ComponentCallbacks2; 25 import android.content.Context; 26 import android.content.pm.PackageManager; 27 import android.content.res.CompatibilityInfo; 28 import android.content.res.Configuration; 29 import android.content.res.Resources; 30 import android.graphics.Canvas; 31 import android.graphics.Paint; 32 import android.graphics.PixelFormat; 33 import android.graphics.Point; 34 import android.graphics.PointF; 35 import android.graphics.PorterDuff; 36 import android.graphics.Rect; 37 import android.graphics.Region; 38 import android.graphics.drawable.Drawable; 39 import android.media.AudioManager; 40 import android.os.Binder; 41 import android.os.Bundle; 42 import android.os.Debug; 43 import android.os.Handler; 44 import android.os.Looper; 45 import android.os.Message; 46 import android.os.ParcelFileDescriptor; 47 import android.os.PowerManager; 48 import android.os.Process; 49 import android.os.RemoteException; 50 import android.os.SystemClock; 51 import android.os.SystemProperties; 52 import android.os.Trace; 53 import android.util.AndroidRuntimeException; 54 import android.util.DisplayMetrics; 55 import android.util.Log; 56 import android.util.Slog; 57 import android.util.TypedValue; 58 import android.view.View.AttachInfo; 59 import android.view.View.MeasureSpec; 60 import android.view.accessibility.AccessibilityEvent; 61 import android.view.accessibility.AccessibilityManager; 62 import android.view.accessibility.AccessibilityManager.AccessibilityStateChangeListener; 63 import android.view.accessibility.AccessibilityNodeInfo; 64 import android.view.accessibility.AccessibilityNodeProvider; 65 import android.view.accessibility.IAccessibilityInteractionConnection; 66 import android.view.accessibility.IAccessibilityInteractionConnectionCallback; 67 import android.view.animation.AccelerateDecelerateInterpolator; 68 import android.view.animation.Interpolator; 69 import android.view.inputmethod.InputConnection; 70 import android.view.inputmethod.InputMethodManager; 71 import android.view.Surface.OutOfResourcesException; 72 import android.widget.Scroller; 73 74 import com.android.internal.R; 75 import com.android.internal.os.SomeArgs; 76 import com.android.internal.policy.PolicyManager; 77 import com.android.internal.view.BaseSurfaceHolder; 78 import com.android.internal.view.RootViewSurfaceTaker; 79 80 import java.io.FileDescriptor; 81 import java.io.IOException; 82 import java.io.OutputStream; 83 import java.io.PrintWriter; 84 import java.lang.ref.WeakReference; 85 import java.util.ArrayList; 86 import java.util.HashSet; 87 88 /** 89 * The top of a view hierarchy, implementing the needed protocol between View 90 * and the WindowManager. This is for the most part an internal implementation 91 * detail of {@link WindowManagerGlobal}. 92 * 93 * {@hide} 94 */ 95 @SuppressWarnings({"EmptyCatchBlock", "PointlessBooleanExpression"}) 96 public final class ViewRootImpl implements ViewParent, 97 View.AttachInfo.Callbacks, HardwareRenderer.HardwareDrawCallbacks { 98 private static final String TAG = "ViewRootImpl"; 99 private static final boolean DBG = false; 100 private static final boolean LOCAL_LOGV = false; 101 /** @noinspection PointlessBooleanExpression*/ 102 private static final boolean DEBUG_DRAW = false || LOCAL_LOGV; 103 private static final boolean DEBUG_LAYOUT = false || LOCAL_LOGV; 104 private static final boolean DEBUG_DIALOG = false || LOCAL_LOGV; 105 private static final boolean DEBUG_INPUT_RESIZE = false || LOCAL_LOGV; 106 private static final boolean DEBUG_ORIENTATION = false || LOCAL_LOGV; 107 private static final boolean DEBUG_TRACKBALL = false || LOCAL_LOGV; 108 private static final boolean DEBUG_IMF = false || LOCAL_LOGV; 109 private static final boolean DEBUG_CONFIGURATION = false || LOCAL_LOGV; 110 private static final boolean DEBUG_FPS = false; 111 private static final boolean DEBUG_INPUT_PROCESSING = false || LOCAL_LOGV; 112 113 /** 114 * Set this system property to true to force the view hierarchy to render 115 * at 60 Hz. This can be used to measure the potential framerate. 116 */ 117 private static final String PROPERTY_PROFILE_RENDERING = "viewroot.profile_rendering"; 118 private static final String PROPERTY_MEDIA_DISABLED = "config.disable_media"; 119 120 /** 121 * Maximum time we allow the user to roll the trackball enough to generate 122 * a key event, before resetting the counters. 123 */ 124 static final int MAX_TRACKBALL_DELAY = 250; 125 126 static final ThreadLocal<RunQueue> sRunQueues = new ThreadLocal<RunQueue>(); 127 128 static final ArrayList<Runnable> sFirstDrawHandlers = new ArrayList<Runnable>(); 129 static boolean sFirstDrawComplete = false; 130 131 static final ArrayList<ComponentCallbacks> sConfigCallbacks 132 = new ArrayList<ComponentCallbacks>(); 133 134 final Context mContext; 135 final IWindowSession mWindowSession; 136 final Display mDisplay; 137 final String mBasePackageName; 138 139 final int[] mTmpLocation = new int[2]; 140 141 final TypedValue mTmpValue = new TypedValue(); 142 143 final Thread mThread; 144 145 final WindowLeaked mLocation; 146 147 final WindowManager.LayoutParams mWindowAttributes = new WindowManager.LayoutParams(); 148 149 final W mWindow; 150 151 final int mTargetSdkVersion; 152 153 int mSeq; 154 155 View mView; 156 157 View mAccessibilityFocusedHost; 158 AccessibilityNodeInfo mAccessibilityFocusedVirtualView; 159 160 int mViewVisibility; 161 boolean mAppVisible = true; 162 int mOrigWindowType = -1; 163 164 // Set to true if the owner of this window is in the stopped state, 165 // so the window should no longer be active. 166 boolean mStopped = false; 167 168 boolean mLastInCompatMode = false; 169 170 SurfaceHolder.Callback2 mSurfaceHolderCallback; 171 BaseSurfaceHolder mSurfaceHolder; 172 boolean mIsCreating; 173 boolean mDrawingAllowed; 174 175 final Region mTransparentRegion; 176 final Region mPreviousTransparentRegion; 177 178 int mWidth; 179 int mHeight; 180 Rect mDirty; 181 final Rect mCurrentDirty = new Rect(); 182 boolean mIsAnimating; 183 184 CompatibilityInfo.Translator mTranslator; 185 186 final View.AttachInfo mAttachInfo; 187 InputChannel mInputChannel; 188 InputQueue.Callback mInputQueueCallback; 189 InputQueue mInputQueue; 190 FallbackEventHandler mFallbackEventHandler; 191 Choreographer mChoreographer; 192 193 final Rect mTempRect; // used in the transaction to not thrash the heap. 194 final Rect mVisRect; // used to retrieve visible rect of focused view. 195 196 boolean mTraversalScheduled; 197 int mTraversalBarrier; 198 boolean mWillDrawSoon; 199 /** Set to true while in performTraversals for detecting when die(true) is called from internal 200 * callbacks such as onMeasure, onPreDraw, onDraw and deferring doDie() until later. */ 201 boolean mIsInTraversal; 202 boolean mFitSystemWindowsRequested; 203 boolean mLayoutRequested; 204 boolean mFirst; 205 boolean mReportNextDraw; 206 boolean mFullRedrawNeeded; 207 boolean mNewSurfaceNeeded; 208 boolean mHasHadWindowFocus; 209 boolean mLastWasImTarget; 210 boolean mWindowsAnimating; 211 boolean mDrawDuringWindowsAnimating; 212 boolean mIsDrawing; 213 int mLastSystemUiVisibility; 214 int mClientWindowLayoutFlags; 215 boolean mLastOverscanRequested; 216 217 // Pool of queued input events. 218 private static final int MAX_QUEUED_INPUT_EVENT_POOL_SIZE = 10; 219 private QueuedInputEvent mQueuedInputEventPool; 220 private int mQueuedInputEventPoolSize; 221 222 /* Input event queue. 223 * Pending input events are input events waiting to be delivered to the input stages 224 * and handled by the application. 225 */ 226 QueuedInputEvent mPendingInputEventHead; 227 QueuedInputEvent mPendingInputEventTail; 228 int mPendingInputEventCount; 229 boolean mProcessInputEventsScheduled; 230 String mPendingInputEventQueueLengthCounterName = "pq"; 231 232 InputStage mFirstInputStage; 233 InputStage mFirstPostImeInputStage; 234 235 boolean mFlipControllerFallbackKeys; 236 237 boolean mWindowAttributesChanged = false; 238 int mWindowAttributesChangesFlag = 0; 239 240 // These can be accessed by any thread, must be protected with a lock. 241 // Surface can never be reassigned or cleared (use Surface.clear()). 242 private final Surface mSurface = new Surface(); 243 244 boolean mAdded; 245 boolean mAddedTouchMode; 246 247 final DisplayAdjustments mDisplayAdjustments; 248 249 // These are accessed by multiple threads. 250 final Rect mWinFrame; // frame given by window manager. 251 252 final Rect mPendingOverscanInsets = new Rect(); 253 final Rect mPendingVisibleInsets = new Rect(); 254 final Rect mPendingContentInsets = new Rect(); 255 final ViewTreeObserver.InternalInsetsInfo mLastGivenInsets 256 = new ViewTreeObserver.InternalInsetsInfo(); 257 258 final Rect mFitSystemWindowsInsets = new Rect(); 259 260 final Configuration mLastConfiguration = new Configuration(); 261 final Configuration mPendingConfiguration = new Configuration(); 262 263 boolean mScrollMayChange; 264 int mSoftInputMode; 265 WeakReference<View> mLastScrolledFocus; 266 int mScrollY; 267 int mCurScrollY; 268 Scroller mScroller; 269 HardwareLayer mResizeBuffer; 270 long mResizeBufferStartTime; 271 int mResizeBufferDuration; 272 static final Interpolator mResizeInterpolator = new AccelerateDecelerateInterpolator(); 273 private ArrayList<LayoutTransition> mPendingTransitions; 274 275 final ViewConfiguration mViewConfiguration; 276 277 /* Drag/drop */ 278 ClipDescription mDragDescription; 279 View mCurrentDragView; 280 volatile Object mLocalDragState; 281 final PointF mDragPoint = new PointF(); 282 final PointF mLastTouchPoint = new PointF(); 283 284 private boolean mProfileRendering; 285 private Choreographer.FrameCallback mRenderProfiler; 286 private boolean mRenderProfilingEnabled; 287 288 private boolean mMediaDisabled; 289 290 // Variables to track frames per second, enabled via DEBUG_FPS flag 291 private long mFpsStartTime = -1; 292 private long mFpsPrevTime = -1; 293 private int mFpsNumFrames; 294 295 private final ArrayList<DisplayList> mDisplayLists = new ArrayList<DisplayList>(); 296 297 /** 298 * see {@link #playSoundEffect(int)} 299 */ 300 AudioManager mAudioManager; 301 302 final AccessibilityManager mAccessibilityManager; 303 304 AccessibilityInteractionController mAccessibilityInteractionController; 305 306 AccessibilityInteractionConnectionManager mAccessibilityInteractionConnectionManager; 307 308 SendWindowContentChangedAccessibilityEvent mSendWindowContentChangedAccessibilityEvent; 309 310 HashSet<View> mTempHashSet; 311 312 private final int mDensity; 313 private final int mNoncompatDensity; 314 315 private boolean mInLayout = false; 316 ArrayList<View> mLayoutRequesters = new ArrayList<View>(); 317 boolean mHandlingLayoutInLayoutRequest = false; 318 319 private int mViewLayoutDirectionInitial; 320 321 /** Set to true once doDie() has been called. */ 322 private boolean mRemoved; 323 324 /** 325 * Consistency verifier for debugging purposes. 326 */ 327 protected final InputEventConsistencyVerifier mInputEventConsistencyVerifier = 328 InputEventConsistencyVerifier.isInstrumentationEnabled() ? 329 new InputEventConsistencyVerifier(this, 0) : null; 330 331 static final class SystemUiVisibilityInfo { 332 int seq; 333 int globalVisibility; 334 int localValue; 335 int localChanges; 336 } 337 338 public ViewRootImpl(Context context, Display display) { 339 mContext = context; 340 mWindowSession = WindowManagerGlobal.getWindowSession(); 341 mDisplay = display; 342 mBasePackageName = context.getBasePackageName(); 343 344 mDisplayAdjustments = display.getDisplayAdjustments(); 345 346 mThread = Thread.currentThread(); 347 mLocation = new WindowLeaked(null); 348 mLocation.fillInStackTrace(); 349 mWidth = -1; 350 mHeight = -1; 351 mDirty = new Rect(); 352 mTempRect = new Rect(); 353 mVisRect = new Rect(); 354 mWinFrame = new Rect(); 355 mWindow = new W(this); 356 mTargetSdkVersion = context.getApplicationInfo().targetSdkVersion; 357 mViewVisibility = View.GONE; 358 mTransparentRegion = new Region(); 359 mPreviousTransparentRegion = new Region(); 360 mFirst = true; // true for the first time the view is added 361 mAdded = false; 362 mAccessibilityManager = AccessibilityManager.getInstance(context); 363 mAccessibilityInteractionConnectionManager = 364 new AccessibilityInteractionConnectionManager(); 365 mAccessibilityManager.addAccessibilityStateChangeListener( 366 mAccessibilityInteractionConnectionManager); 367 mAttachInfo = new View.AttachInfo(mWindowSession, mWindow, display, this, mHandler, this); 368 mViewConfiguration = ViewConfiguration.get(context); 369 mDensity = context.getResources().getDisplayMetrics().densityDpi; 370 mNoncompatDensity = context.getResources().getDisplayMetrics().noncompatDensityDpi; 371 mFallbackEventHandler = PolicyManager.makeNewFallbackEventHandler(context); 372 mChoreographer = Choreographer.getInstance(); 373 mFlipControllerFallbackKeys = 374 context.getResources().getBoolean(R.bool.flip_controller_fallback_keys); 375 376 PowerManager powerManager = (PowerManager) context.getSystemService(Context.POWER_SERVICE); 377 mAttachInfo.mScreenOn = powerManager.isScreenOn(); 378 loadSystemProperties(); 379 } 380 381 public static void addFirstDrawHandler(Runnable callback) { 382 synchronized (sFirstDrawHandlers) { 383 if (!sFirstDrawComplete) { 384 sFirstDrawHandlers.add(callback); 385 } 386 } 387 } 388 389 public static void addConfigCallback(ComponentCallbacks callback) { 390 synchronized (sConfigCallbacks) { 391 sConfigCallbacks.add(callback); 392 } 393 } 394 395 // FIXME for perf testing only 396 private boolean mProfile = false; 397 398 /** 399 * Call this to profile the next traversal call. 400 * FIXME for perf testing only. Remove eventually 401 */ 402 public void profile() { 403 mProfile = true; 404 } 405 406 /** 407 * Indicates whether we are in touch mode. Calling this method triggers an IPC 408 * call and should be avoided whenever possible. 409 * 410 * @return True, if the device is in touch mode, false otherwise. 411 * 412 * @hide 413 */ 414 static boolean isInTouchMode() { 415 IWindowSession windowSession = WindowManagerGlobal.peekWindowSession(); 416 if (windowSession != null) { 417 try { 418 return windowSession.getInTouchMode(); 419 } catch (RemoteException e) { 420 } 421 } 422 return false; 423 } 424 425 /** 426 * We have one child 427 */ 428 public void setView(View view, WindowManager.LayoutParams attrs, View panelParentView) { 429 synchronized (this) { 430 if (mView == null) { 431 mView = view; 432 mViewLayoutDirectionInitial = mView.getRawLayoutDirection(); 433 mFallbackEventHandler.setView(view); 434 mWindowAttributes.copyFrom(attrs); 435 if (mWindowAttributes.packageName == null) { 436 mWindowAttributes.packageName = mBasePackageName; 437 } 438 attrs = mWindowAttributes; 439 // Keep track of the actual window flags supplied by the client. 440 mClientWindowLayoutFlags = attrs.flags; 441 442 setAccessibilityFocus(null, null); 443 444 if (view instanceof RootViewSurfaceTaker) { 445 mSurfaceHolderCallback = 446 ((RootViewSurfaceTaker)view).willYouTakeTheSurface(); 447 if (mSurfaceHolderCallback != null) { 448 mSurfaceHolder = new TakenSurfaceHolder(); 449 mSurfaceHolder.setFormat(PixelFormat.UNKNOWN); 450 } 451 } 452 453 CompatibilityInfo compatibilityInfo = mDisplayAdjustments.getCompatibilityInfo(); 454 mTranslator = compatibilityInfo.getTranslator(); 455 mDisplayAdjustments.setActivityToken(attrs.token); 456 457 // If the application owns the surface, don't enable hardware acceleration 458 if (mSurfaceHolder == null) { 459 enableHardwareAcceleration(attrs); 460 } 461 462 boolean restore = false; 463 if (mTranslator != null) { 464 mSurface.setCompatibilityTranslator(mTranslator); 465 restore = true; 466 attrs.backup(); 467 mTranslator.translateWindowLayout(attrs); 468 } 469 if (DEBUG_LAYOUT) Log.d(TAG, "WindowLayout in setView:" + attrs); 470 471 if (!compatibilityInfo.supportsScreen()) { 472 attrs.privateFlags |= WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 473 mLastInCompatMode = true; 474 } 475 476 mSoftInputMode = attrs.softInputMode; 477 mWindowAttributesChanged = true; 478 mWindowAttributesChangesFlag = WindowManager.LayoutParams.EVERYTHING_CHANGED; 479 mAttachInfo.mRootView = view; 480 mAttachInfo.mScalingRequired = mTranslator != null; 481 mAttachInfo.mApplicationScale = 482 mTranslator == null ? 1.0f : mTranslator.applicationScale; 483 if (panelParentView != null) { 484 mAttachInfo.mPanelParentWindowToken 485 = panelParentView.getApplicationWindowToken(); 486 } 487 mAdded = true; 488 int res; /* = WindowManagerImpl.ADD_OKAY; */ 489 490 // Schedule the first layout -before- adding to the window 491 // manager, to make sure we do the relayout before receiving 492 // any other events from the system. 493 requestLayout(); 494 if ((mWindowAttributes.inputFeatures 495 & WindowManager.LayoutParams.INPUT_FEATURE_NO_INPUT_CHANNEL) == 0) { 496 mInputChannel = new InputChannel(); 497 } 498 try { 499 mOrigWindowType = mWindowAttributes.type; 500 mAttachInfo.mRecomputeGlobalAttributes = true; 501 collectViewAttributes(); 502 res = mWindowSession.addToDisplay(mWindow, mSeq, mWindowAttributes, 503 getHostVisibility(), mDisplay.getDisplayId(), 504 mAttachInfo.mContentInsets, mInputChannel); 505 } catch (RemoteException e) { 506 mAdded = false; 507 mView = null; 508 mAttachInfo.mRootView = null; 509 mInputChannel = null; 510 mFallbackEventHandler.setView(null); 511 unscheduleTraversals(); 512 setAccessibilityFocus(null, null); 513 throw new RuntimeException("Adding window failed", e); 514 } finally { 515 if (restore) { 516 attrs.restore(); 517 } 518 } 519 520 if (mTranslator != null) { 521 mTranslator.translateRectInScreenToAppWindow(mAttachInfo.mContentInsets); 522 } 523 mPendingOverscanInsets.set(0, 0, 0, 0); 524 mPendingContentInsets.set(mAttachInfo.mContentInsets); 525 mPendingVisibleInsets.set(0, 0, 0, 0); 526 if (DEBUG_LAYOUT) Log.v(TAG, "Added window " + mWindow); 527 if (res < WindowManagerGlobal.ADD_OKAY) { 528 mAttachInfo.mRootView = null; 529 mAdded = false; 530 mFallbackEventHandler.setView(null); 531 unscheduleTraversals(); 532 setAccessibilityFocus(null, null); 533 switch (res) { 534 case WindowManagerGlobal.ADD_BAD_APP_TOKEN: 535 case WindowManagerGlobal.ADD_BAD_SUBWINDOW_TOKEN: 536 throw new WindowManager.BadTokenException( 537 "Unable to add window -- token " + attrs.token 538 + " is not valid; is your activity running?"); 539 case WindowManagerGlobal.ADD_NOT_APP_TOKEN: 540 throw new WindowManager.BadTokenException( 541 "Unable to add window -- token " + attrs.token 542 + " is not for an application"); 543 case WindowManagerGlobal.ADD_APP_EXITING: 544 throw new WindowManager.BadTokenException( 545 "Unable to add window -- app for token " + attrs.token 546 + " is exiting"); 547 case WindowManagerGlobal.ADD_DUPLICATE_ADD: 548 throw new WindowManager.BadTokenException( 549 "Unable to add window -- window " + mWindow 550 + " has already been added"); 551 case WindowManagerGlobal.ADD_STARTING_NOT_NEEDED: 552 // Silently ignore -- we would have just removed it 553 // right away, anyway. 554 return; 555 case WindowManagerGlobal.ADD_MULTIPLE_SINGLETON: 556 throw new WindowManager.BadTokenException( 557 "Unable to add window " + mWindow + 558 " -- another window of this type already exists"); 559 case WindowManagerGlobal.ADD_PERMISSION_DENIED: 560 throw new WindowManager.BadTokenException( 561 "Unable to add window " + mWindow + 562 " -- permission denied for this window type"); 563 case WindowManagerGlobal.ADD_INVALID_DISPLAY: 564 throw new WindowManager.InvalidDisplayException( 565 "Unable to add window " + mWindow + 566 " -- the specified display can not be found"); 567 } 568 throw new RuntimeException( 569 "Unable to add window -- unknown error code " + res); 570 } 571 572 if (view instanceof RootViewSurfaceTaker) { 573 mInputQueueCallback = 574 ((RootViewSurfaceTaker)view).willYouTakeTheInputQueue(); 575 } 576 if (mInputChannel != null) { 577 if (mInputQueueCallback != null) { 578 mInputQueue = new InputQueue(); 579 mInputQueueCallback.onInputQueueCreated(mInputQueue); 580 } 581 mInputEventReceiver = new WindowInputEventReceiver(mInputChannel, 582 Looper.myLooper()); 583 } 584 585 view.assignParent(this); 586 mAddedTouchMode = (res & WindowManagerGlobal.ADD_FLAG_IN_TOUCH_MODE) != 0; 587 mAppVisible = (res & WindowManagerGlobal.ADD_FLAG_APP_VISIBLE) != 0; 588 589 if (mAccessibilityManager.isEnabled()) { 590 mAccessibilityInteractionConnectionManager.ensureConnection(); 591 } 592 593 if (view.getImportantForAccessibility() == View.IMPORTANT_FOR_ACCESSIBILITY_AUTO) { 594 view.setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_YES); 595 } 596 597 // Set up the input pipeline. 598 CharSequence counterSuffix = attrs.getTitle(); 599 InputStage syntheticInputStage = new SyntheticInputStage(); 600 InputStage viewPostImeStage = new ViewPostImeInputStage(syntheticInputStage); 601 InputStage nativePostImeStage = new NativePostImeInputStage(viewPostImeStage, 602 "aq:native-post-ime:" + counterSuffix); 603 InputStage earlyPostImeStage = new EarlyPostImeInputStage(nativePostImeStage); 604 InputStage imeStage = new ImeInputStage(earlyPostImeStage, 605 "aq:ime:" + counterSuffix); 606 InputStage viewPreImeStage = new ViewPreImeInputStage(imeStage); 607 InputStage nativePreImeStage = new NativePreImeInputStage(viewPreImeStage, 608 "aq:native-pre-ime:" + counterSuffix); 609 610 mFirstInputStage = nativePreImeStage; 611 mFirstPostImeInputStage = earlyPostImeStage; 612 mPendingInputEventQueueLengthCounterName = "aq:pending:" + counterSuffix; 613 } 614 } 615 } 616 617 /** Whether the window is in local focus mode or not */ 618 private boolean isInLocalFocusMode() { 619 return (mWindowAttributes.flags & WindowManager.LayoutParams.FLAG_LOCAL_FOCUS_MODE) != 0; 620 } 621 622 void destroyHardwareResources() { 623 invalidateDisplayLists(); 624 if (mAttachInfo.mHardwareRenderer != null) { 625 mAttachInfo.mHardwareRenderer.destroyHardwareResources(mView); 626 mAttachInfo.mHardwareRenderer.destroy(false); 627 } 628 } 629 630 void destroyHardwareLayers() { 631 if (mThread != Thread.currentThread()) { 632 if (mAttachInfo.mHardwareRenderer != null && 633 mAttachInfo.mHardwareRenderer.isEnabled()) { 634 HardwareRenderer.trimMemory(ComponentCallbacks2.TRIM_MEMORY_MODERATE); 635 } 636 } else { 637 invalidateDisplayLists(); 638 if (mAttachInfo.mHardwareRenderer != null && 639 mAttachInfo.mHardwareRenderer.isEnabled()) { 640 mAttachInfo.mHardwareRenderer.destroyLayers(mView); 641 } 642 } 643 } 644 645 void pushHardwareLayerUpdate(HardwareLayer layer) { 646 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled()) { 647 mAttachInfo.mHardwareRenderer.pushLayerUpdate(layer); 648 } 649 } 650 651 void flushHardwareLayerUpdates() { 652 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled() && 653 mAttachInfo.mHardwareRenderer.validate()) { 654 mAttachInfo.mHardwareRenderer.flushLayerUpdates(); 655 } 656 } 657 658 void dispatchFlushHardwareLayerUpdates() { 659 mHandler.removeMessages(MSG_FLUSH_LAYER_UPDATES); 660 mHandler.sendMessageAtFrontOfQueue(mHandler.obtainMessage(MSG_FLUSH_LAYER_UPDATES)); 661 } 662 663 public boolean attachFunctor(int functor) { 664 //noinspection SimplifiableIfStatement 665 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled()) { 666 return mAttachInfo.mHardwareRenderer.attachFunctor(mAttachInfo, functor); 667 } 668 return false; 669 } 670 671 public void detachFunctor(int functor) { 672 if (mAttachInfo.mHardwareRenderer != null) { 673 mAttachInfo.mHardwareRenderer.detachFunctor(functor); 674 } 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 // Don't enable hardware acceleration when we're not on the main thread 710 if (!HardwareRenderer.sSystemRendererDisabled && 711 Looper.getMainLooper() != Looper.myLooper()) { 712 Log.w(HardwareRenderer.LOG_TAG, "Attempting to initialize hardware " 713 + "acceleration outside of the main thread, aborting"); 714 return; 715 } 716 717 if (mAttachInfo.mHardwareRenderer != null) { 718 mAttachInfo.mHardwareRenderer.destroy(true); 719 } 720 721 final boolean translucent = attrs.format != PixelFormat.OPAQUE; 722 mAttachInfo.mHardwareRenderer = HardwareRenderer.createGlRenderer(2, translucent); 723 if (mAttachInfo.mHardwareRenderer != null) { 724 mAttachInfo.mHardwareRenderer.setName(attrs.getTitle().toString()); 725 mAttachInfo.mHardwareAccelerated = 726 mAttachInfo.mHardwareAccelerationRequested = true; 727 } 728 } else if (fakeHwAccelerated) { 729 // The window had wanted to use hardware acceleration, but this 730 // is not allowed in its process. By setting this flag, it can 731 // still render as if it was accelerated. This is basically for 732 // the preview windows the window manager shows for launching 733 // applications, so they will look more like the app being launched. 734 mAttachInfo.mHardwareAccelerationRequested = true; 735 } 736 } 737 } 738 739 public View getView() { 740 return mView; 741 } 742 743 final WindowLeaked getLocation() { 744 return mLocation; 745 } 746 747 void setLayoutParams(WindowManager.LayoutParams attrs, boolean newView) { 748 synchronized (this) { 749 int oldSoftInputMode = mWindowAttributes.softInputMode; 750 // Keep track of the actual window flags supplied by the client. 751 mClientWindowLayoutFlags = attrs.flags; 752 // preserve compatible window flag if exists. 753 int compatibleWindowFlag = mWindowAttributes.privateFlags 754 & WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 755 // transfer over system UI visibility values as they carry current state. 756 attrs.systemUiVisibility = mWindowAttributes.systemUiVisibility; 757 attrs.subtreeSystemUiVisibility = mWindowAttributes.subtreeSystemUiVisibility; 758 mWindowAttributesChangesFlag = mWindowAttributes.copyFrom(attrs); 759 if ((mWindowAttributesChangesFlag 760 & WindowManager.LayoutParams.TRANSLUCENT_FLAGS_CHANGED) != 0) { 761 // Recompute system ui visibility. 762 mAttachInfo.mRecomputeGlobalAttributes = true; 763 } 764 if (mWindowAttributes.packageName == null) { 765 mWindowAttributes.packageName = mBasePackageName; 766 } 767 mWindowAttributes.privateFlags |= compatibleWindowFlag; 768 769 applyKeepScreenOnFlag(mWindowAttributes); 770 771 if (newView) { 772 mSoftInputMode = attrs.softInputMode; 773 requestLayout(); 774 } 775 // Don't lose the mode we last auto-computed. 776 if ((attrs.softInputMode&WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 777 == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 778 mWindowAttributes.softInputMode = (mWindowAttributes.softInputMode 779 & ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 780 | (oldSoftInputMode 781 & WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST); 782 } 783 mWindowAttributesChanged = true; 784 scheduleTraversals(); 785 } 786 } 787 788 void handleAppVisibility(boolean visible) { 789 if (mAppVisible != visible) { 790 mAppVisible = visible; 791 scheduleTraversals(); 792 } 793 } 794 795 void handleGetNewSurface() { 796 mNewSurfaceNeeded = true; 797 mFullRedrawNeeded = true; 798 scheduleTraversals(); 799 } 800 801 void handleScreenStateChange(boolean on) { 802 if (on != mAttachInfo.mScreenOn) { 803 mAttachInfo.mScreenOn = on; 804 if (mView != null) { 805 mView.dispatchScreenStateChanged(on ? View.SCREEN_STATE_ON : View.SCREEN_STATE_OFF); 806 } 807 if (on) { 808 mFullRedrawNeeded = true; 809 scheduleTraversals(); 810 } 811 } 812 } 813 814 @Override 815 public void requestFitSystemWindows() { 816 checkThread(); 817 mFitSystemWindowsRequested = true; 818 scheduleTraversals(); 819 } 820 821 @Override 822 public void requestLayout() { 823 if (!mHandlingLayoutInLayoutRequest) { 824 checkThread(); 825 mLayoutRequested = true; 826 scheduleTraversals(); 827 } 828 } 829 830 @Override 831 public boolean isLayoutRequested() { 832 return mLayoutRequested; 833 } 834 835 void invalidate() { 836 mDirty.set(0, 0, mWidth, mHeight); 837 scheduleTraversals(); 838 } 839 840 void invalidateWorld(View view) { 841 view.invalidate(); 842 if (view instanceof ViewGroup) { 843 ViewGroup parent = (ViewGroup) view; 844 for (int i = 0; i < parent.getChildCount(); i++) { 845 invalidateWorld(parent.getChildAt(i)); 846 } 847 } 848 } 849 850 @Override 851 public void invalidateChild(View child, Rect dirty) { 852 invalidateChildInParent(null, dirty); 853 } 854 855 @Override 856 public ViewParent invalidateChildInParent(int[] location, Rect dirty) { 857 checkThread(); 858 if (DEBUG_DRAW) Log.v(TAG, "Invalidate child: " + dirty); 859 860 if (dirty == null) { 861 invalidate(); 862 return null; 863 } else if (dirty.isEmpty() && !mIsAnimating) { 864 return null; 865 } 866 867 if (mCurScrollY != 0 || mTranslator != null) { 868 mTempRect.set(dirty); 869 dirty = mTempRect; 870 if (mCurScrollY != 0) { 871 dirty.offset(0, -mCurScrollY); 872 } 873 if (mTranslator != null) { 874 mTranslator.translateRectInAppWindowToScreen(dirty); 875 } 876 if (mAttachInfo.mScalingRequired) { 877 dirty.inset(-1, -1); 878 } 879 } 880 881 final Rect localDirty = mDirty; 882 if (!localDirty.isEmpty() && !localDirty.contains(dirty)) { 883 mAttachInfo.mSetIgnoreDirtyState = true; 884 mAttachInfo.mIgnoreDirtyState = true; 885 } 886 887 // Add the new dirty rect to the current one 888 localDirty.union(dirty.left, dirty.top, dirty.right, dirty.bottom); 889 // Intersect with the bounds of the window to skip 890 // updates that lie outside of the visible region 891 final float appScale = mAttachInfo.mApplicationScale; 892 final boolean intersected = localDirty.intersect(0, 0, 893 (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 894 if (!intersected) { 895 localDirty.setEmpty(); 896 } 897 if (!mWillDrawSoon && (intersected || mIsAnimating)) { 898 scheduleTraversals(); 899 } 900 901 return null; 902 } 903 904 void setStopped(boolean stopped) { 905 if (mStopped != stopped) { 906 mStopped = stopped; 907 if (!stopped) { 908 scheduleTraversals(); 909 } 910 } 911 } 912 913 @Override 914 public ViewParent getParent() { 915 return null; 916 } 917 918 @Override 919 public boolean getChildVisibleRect(View child, Rect r, android.graphics.Point offset) { 920 if (child != mView) { 921 throw new RuntimeException("child is not mine, honest!"); 922 } 923 // Note: don't apply scroll offset, because we want to know its 924 // visibility in the virtual canvas being given to the view hierarchy. 925 return r.intersect(0, 0, mWidth, mHeight); 926 } 927 928 @Override 929 public void bringChildToFront(View child) { 930 } 931 932 int getHostVisibility() { 933 return mAppVisible ? mView.getVisibility() : View.GONE; 934 } 935 936 void disposeResizeBuffer() { 937 if (mResizeBuffer != null && mAttachInfo.mHardwareRenderer != null) { 938 mAttachInfo.mHardwareRenderer.safelyRun(new Runnable() { 939 @Override 940 public void run() { 941 mResizeBuffer.destroy(); 942 mResizeBuffer = null; 943 } 944 }); 945 } 946 } 947 948 /** 949 * Add LayoutTransition to the list of transitions to be started in the next traversal. 950 * This list will be cleared after the transitions on the list are start()'ed. These 951 * transitionsa re added by LayoutTransition itself when it sets up animations. The setup 952 * happens during the layout phase of traversal, which we want to complete before any of the 953 * animations are started (because those animations may side-effect properties that layout 954 * depends upon, like the bounding rectangles of the affected views). So we add the transition 955 * to the list and it is started just prior to starting the drawing phase of traversal. 956 * 957 * @param transition The LayoutTransition to be started on the next traversal. 958 * 959 * @hide 960 */ 961 public void requestTransitionStart(LayoutTransition transition) { 962 if (mPendingTransitions == null || !mPendingTransitions.contains(transition)) { 963 if (mPendingTransitions == null) { 964 mPendingTransitions = new ArrayList<LayoutTransition>(); 965 } 966 mPendingTransitions.add(transition); 967 } 968 } 969 970 void scheduleTraversals() { 971 if (!mTraversalScheduled) { 972 mTraversalScheduled = true; 973 mTraversalBarrier = mHandler.getLooper().postSyncBarrier(); 974 mChoreographer.postCallback( 975 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 976 scheduleConsumeBatchedInput(); 977 } 978 } 979 980 void unscheduleTraversals() { 981 if (mTraversalScheduled) { 982 mTraversalScheduled = false; 983 mHandler.getLooper().removeSyncBarrier(mTraversalBarrier); 984 mChoreographer.removeCallbacks( 985 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 986 } 987 } 988 989 void doTraversal() { 990 if (mTraversalScheduled) { 991 mTraversalScheduled = false; 992 mHandler.getLooper().removeSyncBarrier(mTraversalBarrier); 993 994 if (mProfile) { 995 Debug.startMethodTracing("ViewAncestor"); 996 } 997 998 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "performTraversals"); 999 try { 1000 performTraversals(); 1001 } finally { 1002 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 1003 } 1004 1005 if (mProfile) { 1006 Debug.stopMethodTracing(); 1007 mProfile = false; 1008 } 1009 } 1010 } 1011 1012 private void applyKeepScreenOnFlag(WindowManager.LayoutParams params) { 1013 // Update window's global keep screen on flag: if a view has requested 1014 // that the screen be kept on, then it is always set; otherwise, it is 1015 // set to whatever the client last requested for the global state. 1016 if (mAttachInfo.mKeepScreenOn) { 1017 params.flags |= WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON; 1018 } else { 1019 params.flags = (params.flags&~WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON) 1020 | (mClientWindowLayoutFlags&WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 1021 } 1022 } 1023 1024 private boolean collectViewAttributes() { 1025 final View.AttachInfo attachInfo = mAttachInfo; 1026 if (attachInfo.mRecomputeGlobalAttributes) { 1027 //Log.i(TAG, "Computing view hierarchy attributes!"); 1028 attachInfo.mRecomputeGlobalAttributes = false; 1029 boolean oldScreenOn = attachInfo.mKeepScreenOn; 1030 attachInfo.mKeepScreenOn = false; 1031 attachInfo.mSystemUiVisibility = 0; 1032 attachInfo.mHasSystemUiListeners = false; 1033 mView.dispatchCollectViewAttributes(attachInfo, 0); 1034 attachInfo.mSystemUiVisibility &= ~attachInfo.mDisabledSystemUiVisibility; 1035 WindowManager.LayoutParams params = mWindowAttributes; 1036 attachInfo.mSystemUiVisibility |= getImpliedSystemUiVisibility(params); 1037 if (attachInfo.mKeepScreenOn != oldScreenOn 1038 || attachInfo.mSystemUiVisibility != params.subtreeSystemUiVisibility 1039 || attachInfo.mHasSystemUiListeners != params.hasSystemUiListeners) { 1040 applyKeepScreenOnFlag(params); 1041 params.subtreeSystemUiVisibility = attachInfo.mSystemUiVisibility; 1042 params.hasSystemUiListeners = attachInfo.mHasSystemUiListeners; 1043 mView.dispatchWindowSystemUiVisiblityChanged(attachInfo.mSystemUiVisibility); 1044 return true; 1045 } 1046 } 1047 return false; 1048 } 1049 1050 private int getImpliedSystemUiVisibility(WindowManager.LayoutParams params) { 1051 int vis = 0; 1052 // Translucent decor window flags imply stable system ui visibility. 1053 if ((params.flags & WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS) != 0) { 1054 vis |= View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN; 1055 } 1056 if ((params.flags & WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION) != 0) { 1057 vis |= View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION; 1058 } 1059 return vis; 1060 } 1061 1062 private boolean measureHierarchy(final View host, final WindowManager.LayoutParams lp, 1063 final Resources res, final int desiredWindowWidth, final int desiredWindowHeight) { 1064 int childWidthMeasureSpec; 1065 int childHeightMeasureSpec; 1066 boolean windowSizeMayChange = false; 1067 1068 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) Log.v(TAG, 1069 "Measuring " + host + " in display " + desiredWindowWidth 1070 + "x" + desiredWindowHeight + "..."); 1071 1072 boolean goodMeasure = false; 1073 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT) { 1074 // On large screens, we don't want to allow dialogs to just 1075 // stretch to fill the entire width of the screen to display 1076 // one line of text. First try doing the layout at a smaller 1077 // size to see if it will fit. 1078 final DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1079 res.getValue(com.android.internal.R.dimen.config_prefDialogWidth, mTmpValue, true); 1080 int baseSize = 0; 1081 if (mTmpValue.type == TypedValue.TYPE_DIMENSION) { 1082 baseSize = (int)mTmpValue.getDimension(packageMetrics); 1083 } 1084 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": baseSize=" + baseSize); 1085 if (baseSize != 0 && desiredWindowWidth > baseSize) { 1086 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1087 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1088 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1089 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": measured (" 1090 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1091 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1092 goodMeasure = true; 1093 } else { 1094 // Didn't fit in that size... try expanding a bit. 1095 baseSize = (baseSize+desiredWindowWidth)/2; 1096 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": next baseSize=" 1097 + baseSize); 1098 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1099 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1100 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": measured (" 1101 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1102 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1103 if (DEBUG_DIALOG) Log.v(TAG, "Good!"); 1104 goodMeasure = true; 1105 } 1106 } 1107 } 1108 } 1109 1110 if (!goodMeasure) { 1111 childWidthMeasureSpec = getRootMeasureSpec(desiredWindowWidth, lp.width); 1112 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1113 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1114 if (mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) { 1115 windowSizeMayChange = true; 1116 } 1117 } 1118 1119 if (DBG) { 1120 System.out.println("======================================"); 1121 System.out.println("performTraversals -- after measure"); 1122 host.debug(); 1123 } 1124 1125 return windowSizeMayChange; 1126 } 1127 1128 private void performTraversals() { 1129 // cache mView since it is used so much below... 1130 final View host = mView; 1131 1132 if (DBG) { 1133 System.out.println("======================================"); 1134 System.out.println("performTraversals"); 1135 host.debug(); 1136 } 1137 1138 if (host == null || !mAdded) 1139 return; 1140 1141 mIsInTraversal = true; 1142 mWillDrawSoon = true; 1143 boolean windowSizeMayChange = false; 1144 boolean newSurface = false; 1145 boolean surfaceChanged = false; 1146 WindowManager.LayoutParams lp = mWindowAttributes; 1147 1148 int desiredWindowWidth; 1149 int desiredWindowHeight; 1150 1151 final View.AttachInfo attachInfo = mAttachInfo; 1152 1153 final int viewVisibility = getHostVisibility(); 1154 boolean viewVisibilityChanged = mViewVisibility != viewVisibility 1155 || mNewSurfaceNeeded; 1156 1157 WindowManager.LayoutParams params = null; 1158 if (mWindowAttributesChanged) { 1159 mWindowAttributesChanged = false; 1160 surfaceChanged = true; 1161 params = lp; 1162 } 1163 CompatibilityInfo compatibilityInfo = mDisplayAdjustments.getCompatibilityInfo(); 1164 if (compatibilityInfo.supportsScreen() == mLastInCompatMode) { 1165 params = lp; 1166 mFullRedrawNeeded = true; 1167 mLayoutRequested = true; 1168 if (mLastInCompatMode) { 1169 params.privateFlags &= ~WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 1170 mLastInCompatMode = false; 1171 } else { 1172 params.privateFlags |= WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 1173 mLastInCompatMode = true; 1174 } 1175 } 1176 1177 mWindowAttributesChangesFlag = 0; 1178 1179 Rect frame = mWinFrame; 1180 if (mFirst) { 1181 mFullRedrawNeeded = true; 1182 mLayoutRequested = true; 1183 1184 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL 1185 || lp.type == WindowManager.LayoutParams.TYPE_INPUT_METHOD) { 1186 // NOTE -- system code, won't try to do compat mode. 1187 Point size = new Point(); 1188 mDisplay.getRealSize(size); 1189 desiredWindowWidth = size.x; 1190 desiredWindowHeight = size.y; 1191 } else { 1192 DisplayMetrics packageMetrics = 1193 mView.getContext().getResources().getDisplayMetrics(); 1194 desiredWindowWidth = packageMetrics.widthPixels; 1195 desiredWindowHeight = packageMetrics.heightPixels; 1196 } 1197 1198 // For the very first time, tell the view hierarchy that it 1199 // is attached to the window. Note that at this point the surface 1200 // object is not initialized to its backing store, but soon it 1201 // will be (assuming the window is visible). 1202 attachInfo.mSurface = mSurface; 1203 // We used to use the following condition to choose 32 bits drawing caches: 1204 // PixelFormat.hasAlpha(lp.format) || lp.format == PixelFormat.RGBX_8888 1205 // However, windows are now always 32 bits by default, so choose 32 bits 1206 attachInfo.mUse32BitDrawingCache = true; 1207 attachInfo.mHasWindowFocus = false; 1208 attachInfo.mWindowVisibility = viewVisibility; 1209 attachInfo.mRecomputeGlobalAttributes = false; 1210 viewVisibilityChanged = false; 1211 mLastConfiguration.setTo(host.getResources().getConfiguration()); 1212 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1213 // Set the layout direction if it has not been set before (inherit is the default) 1214 if (mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 1215 host.setLayoutDirection(mLastConfiguration.getLayoutDirection()); 1216 } 1217 host.dispatchAttachedToWindow(attachInfo, 0); 1218 attachInfo.mTreeObserver.dispatchOnWindowAttachedChange(true); 1219 mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets); 1220 host.fitSystemWindows(mFitSystemWindowsInsets); 1221 //Log.i(TAG, "Screen on initialized: " + attachInfo.mKeepScreenOn); 1222 1223 } else { 1224 desiredWindowWidth = frame.width(); 1225 desiredWindowHeight = frame.height(); 1226 if (desiredWindowWidth != mWidth || desiredWindowHeight != mHeight) { 1227 if (DEBUG_ORIENTATION) Log.v(TAG, 1228 "View " + host + " resized to: " + frame); 1229 mFullRedrawNeeded = true; 1230 mLayoutRequested = true; 1231 windowSizeMayChange = true; 1232 } 1233 } 1234 1235 if (viewVisibilityChanged) { 1236 attachInfo.mWindowVisibility = viewVisibility; 1237 host.dispatchWindowVisibilityChanged(viewVisibility); 1238 if (viewVisibility != View.VISIBLE || mNewSurfaceNeeded) { 1239 destroyHardwareResources(); 1240 } 1241 if (viewVisibility == View.GONE) { 1242 // After making a window gone, we will count it as being 1243 // shown for the first time the next time it gets focus. 1244 mHasHadWindowFocus = false; 1245 } 1246 } 1247 1248 // Execute enqueued actions on every traversal in case a detached view enqueued an action 1249 getRunQueue().executeActions(attachInfo.mHandler); 1250 1251 boolean insetsChanged = false; 1252 1253 boolean layoutRequested = mLayoutRequested && !mStopped; 1254 if (layoutRequested) { 1255 1256 final Resources res = mView.getContext().getResources(); 1257 1258 if (mFirst) { 1259 // make sure touch mode code executes by setting cached value 1260 // to opposite of the added touch mode. 1261 mAttachInfo.mInTouchMode = !mAddedTouchMode; 1262 ensureTouchModeLocally(mAddedTouchMode); 1263 } else { 1264 if (!mPendingOverscanInsets.equals(mAttachInfo.mOverscanInsets)) { 1265 insetsChanged = true; 1266 } 1267 if (!mPendingContentInsets.equals(mAttachInfo.mContentInsets)) { 1268 insetsChanged = true; 1269 } 1270 if (!mPendingVisibleInsets.equals(mAttachInfo.mVisibleInsets)) { 1271 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1272 if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: " 1273 + mAttachInfo.mVisibleInsets); 1274 } 1275 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT 1276 || lp.height == ViewGroup.LayoutParams.WRAP_CONTENT) { 1277 windowSizeMayChange = true; 1278 1279 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL 1280 || lp.type == WindowManager.LayoutParams.TYPE_INPUT_METHOD) { 1281 // NOTE -- system code, won't try to do compat mode. 1282 Point size = new Point(); 1283 mDisplay.getRealSize(size); 1284 desiredWindowWidth = size.x; 1285 desiredWindowHeight = size.y; 1286 } else { 1287 DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1288 desiredWindowWidth = packageMetrics.widthPixels; 1289 desiredWindowHeight = packageMetrics.heightPixels; 1290 } 1291 } 1292 } 1293 1294 // Ask host how big it wants to be 1295 windowSizeMayChange |= measureHierarchy(host, lp, res, 1296 desiredWindowWidth, desiredWindowHeight); 1297 } 1298 1299 if (collectViewAttributes()) { 1300 params = lp; 1301 } 1302 if (attachInfo.mForceReportNewAttributes) { 1303 attachInfo.mForceReportNewAttributes = false; 1304 params = lp; 1305 } 1306 1307 if (mFirst || attachInfo.mViewVisibilityChanged) { 1308 attachInfo.mViewVisibilityChanged = false; 1309 int resizeMode = mSoftInputMode & 1310 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST; 1311 // If we are in auto resize mode, then we need to determine 1312 // what mode to use now. 1313 if (resizeMode == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 1314 final int N = attachInfo.mScrollContainers.size(); 1315 for (int i=0; i<N; i++) { 1316 if (attachInfo.mScrollContainers.get(i).isShown()) { 1317 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE; 1318 } 1319 } 1320 if (resizeMode == 0) { 1321 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_PAN; 1322 } 1323 if ((lp.softInputMode & 1324 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) != resizeMode) { 1325 lp.softInputMode = (lp.softInputMode & 1326 ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) | 1327 resizeMode; 1328 params = lp; 1329 } 1330 } 1331 } 1332 1333 if (params != null) { 1334 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 1335 if (!PixelFormat.formatHasAlpha(params.format)) { 1336 params.format = PixelFormat.TRANSLUCENT; 1337 } 1338 } 1339 mAttachInfo.mOverscanRequested = (params.flags 1340 & WindowManager.LayoutParams.FLAG_LAYOUT_IN_OVERSCAN) != 0; 1341 } 1342 1343 if (mFitSystemWindowsRequested) { 1344 mFitSystemWindowsRequested = false; 1345 mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets); 1346 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1347 host.fitSystemWindows(mFitSystemWindowsInsets); 1348 if (mLayoutRequested) { 1349 // Short-circuit catching a new layout request here, so 1350 // we don't need to go through two layout passes when things 1351 // change due to fitting system windows, which can happen a lot. 1352 windowSizeMayChange |= measureHierarchy(host, lp, 1353 mView.getContext().getResources(), 1354 desiredWindowWidth, desiredWindowHeight); 1355 } 1356 } 1357 1358 if (layoutRequested) { 1359 // Clear this now, so that if anything requests a layout in the 1360 // rest of this function we will catch it and re-run a full 1361 // layout pass. 1362 mLayoutRequested = false; 1363 } 1364 1365 boolean windowShouldResize = layoutRequested && windowSizeMayChange 1366 && ((mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) 1367 || (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT && 1368 frame.width() < desiredWindowWidth && frame.width() != mWidth) 1369 || (lp.height == ViewGroup.LayoutParams.WRAP_CONTENT && 1370 frame.height() < desiredWindowHeight && frame.height() != mHeight)); 1371 1372 // Determine whether to compute insets. 1373 // If there are no inset listeners remaining then we may still need to compute 1374 // insets in case the old insets were non-empty and must be reset. 1375 final boolean computesInternalInsets = 1376 attachInfo.mTreeObserver.hasComputeInternalInsetsListeners() 1377 || attachInfo.mHasNonEmptyGivenInternalInsets; 1378 1379 boolean insetsPending = false; 1380 int relayoutResult = 0; 1381 1382 if (mFirst || windowShouldResize || insetsChanged || 1383 viewVisibilityChanged || params != null) { 1384 1385 if (viewVisibility == View.VISIBLE) { 1386 // If this window is giving internal insets to the window 1387 // manager, and it is being added or changing its visibility, 1388 // then we want to first give the window manager "fake" 1389 // insets to cause it to effectively ignore the content of 1390 // the window during layout. This avoids it briefly causing 1391 // other windows to resize/move based on the raw frame of the 1392 // window, waiting until we can finish laying out this window 1393 // and get back to the window manager with the ultimately 1394 // computed insets. 1395 insetsPending = computesInternalInsets && (mFirst || viewVisibilityChanged); 1396 } 1397 1398 if (mSurfaceHolder != null) { 1399 mSurfaceHolder.mSurfaceLock.lock(); 1400 mDrawingAllowed = true; 1401 } 1402 1403 boolean hwInitialized = false; 1404 boolean contentInsetsChanged = false; 1405 boolean hadSurface = mSurface.isValid(); 1406 1407 try { 1408 if (DEBUG_LAYOUT) { 1409 Log.i(TAG, "host=w:" + host.getMeasuredWidth() + ", h:" + 1410 host.getMeasuredHeight() + ", params=" + params); 1411 } 1412 1413 final int surfaceGenerationId = mSurface.getGenerationId(); 1414 relayoutResult = relayoutWindow(params, viewVisibility, insetsPending); 1415 if (!mDrawDuringWindowsAnimating && 1416 (relayoutResult & WindowManagerGlobal.RELAYOUT_RES_ANIMATING) != 0) { 1417 mWindowsAnimating = true; 1418 } 1419 1420 if (DEBUG_LAYOUT) Log.v(TAG, "relayout: frame=" + frame.toShortString() 1421 + " overscan=" + mPendingOverscanInsets.toShortString() 1422 + " content=" + mPendingContentInsets.toShortString() 1423 + " visible=" + mPendingVisibleInsets.toShortString() 1424 + " surface=" + mSurface); 1425 1426 if (mPendingConfiguration.seq != 0) { 1427 if (DEBUG_CONFIGURATION) Log.v(TAG, "Visible with new config: " 1428 + mPendingConfiguration); 1429 updateConfiguration(mPendingConfiguration, !mFirst); 1430 mPendingConfiguration.seq = 0; 1431 } 1432 1433 final boolean overscanInsetsChanged = !mPendingOverscanInsets.equals( 1434 mAttachInfo.mOverscanInsets); 1435 contentInsetsChanged = !mPendingContentInsets.equals( 1436 mAttachInfo.mContentInsets); 1437 final boolean visibleInsetsChanged = !mPendingVisibleInsets.equals( 1438 mAttachInfo.mVisibleInsets); 1439 if (contentInsetsChanged) { 1440 if (mWidth > 0 && mHeight > 0 && lp != null && 1441 ((lp.systemUiVisibility|lp.subtreeSystemUiVisibility) 1442 & View.SYSTEM_UI_LAYOUT_FLAGS) == 0 && 1443 mSurface != null && mSurface.isValid() && 1444 !mAttachInfo.mTurnOffWindowResizeAnim && 1445 mAttachInfo.mHardwareRenderer != null && 1446 mAttachInfo.mHardwareRenderer.isEnabled() && 1447 mAttachInfo.mHardwareRenderer.validate() && 1448 lp != null && !PixelFormat.formatHasAlpha(lp.format)) { 1449 1450 disposeResizeBuffer(); 1451 1452 boolean completed = false; 1453 HardwareCanvas hwRendererCanvas = mAttachInfo.mHardwareRenderer.getCanvas(); 1454 HardwareCanvas layerCanvas = null; 1455 try { 1456 if (mResizeBuffer == null) { 1457 mResizeBuffer = mAttachInfo.mHardwareRenderer.createHardwareLayer( 1458 mWidth, mHeight, false); 1459 } else if (mResizeBuffer.getWidth() != mWidth || 1460 mResizeBuffer.getHeight() != mHeight) { 1461 mResizeBuffer.resize(mWidth, mHeight); 1462 } 1463 // TODO: should handle create/resize failure 1464 layerCanvas = mResizeBuffer.start(hwRendererCanvas); 1465 final int restoreCount = layerCanvas.save(); 1466 1467 int yoff; 1468 final boolean scrolling = mScroller != null 1469 && mScroller.computeScrollOffset(); 1470 if (scrolling) { 1471 yoff = mScroller.getCurrY(); 1472 mScroller.abortAnimation(); 1473 } else { 1474 yoff = mScrollY; 1475 } 1476 1477 layerCanvas.translate(0, -yoff); 1478 if (mTranslator != null) { 1479 mTranslator.translateCanvas(layerCanvas); 1480 } 1481 1482 DisplayList displayList = mView.mDisplayList; 1483 if (displayList != null && displayList.isValid()) { 1484 layerCanvas.drawDisplayList(displayList, null, 1485 DisplayList.FLAG_CLIP_CHILDREN); 1486 } else { 1487 mView.draw(layerCanvas); 1488 } 1489 1490 drawAccessibilityFocusedDrawableIfNeeded(layerCanvas); 1491 1492 mResizeBufferStartTime = SystemClock.uptimeMillis(); 1493 mResizeBufferDuration = mView.getResources().getInteger( 1494 com.android.internal.R.integer.config_mediumAnimTime); 1495 completed = true; 1496 1497 layerCanvas.restoreToCount(restoreCount); 1498 } catch (OutOfMemoryError e) { 1499 Log.w(TAG, "Not enough memory for content change anim buffer", e); 1500 } finally { 1501 if (mResizeBuffer != null) { 1502 mResizeBuffer.end(hwRendererCanvas); 1503 if (!completed) { 1504 disposeResizeBuffer(); 1505 } 1506 } 1507 } 1508 } 1509 mAttachInfo.mContentInsets.set(mPendingContentInsets); 1510 if (DEBUG_LAYOUT) Log.v(TAG, "Content insets changing to: " 1511 + mAttachInfo.mContentInsets); 1512 } 1513 if (overscanInsetsChanged) { 1514 mAttachInfo.mOverscanInsets.set(mPendingOverscanInsets); 1515 if (DEBUG_LAYOUT) Log.v(TAG, "Overscan insets changing to: " 1516 + mAttachInfo.mOverscanInsets); 1517 // Need to relayout with content insets. 1518 contentInsetsChanged = true; 1519 } 1520 if (contentInsetsChanged || mLastSystemUiVisibility != 1521 mAttachInfo.mSystemUiVisibility || mFitSystemWindowsRequested 1522 || mLastOverscanRequested != mAttachInfo.mOverscanRequested) { 1523 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1524 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1525 mFitSystemWindowsRequested = false; 1526 mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets); 1527 host.fitSystemWindows(mFitSystemWindowsInsets); 1528 } 1529 if (visibleInsetsChanged) { 1530 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1531 if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: " 1532 + mAttachInfo.mVisibleInsets); 1533 } 1534 1535 if (!hadSurface) { 1536 if (mSurface.isValid()) { 1537 // If we are creating a new surface, then we need to 1538 // completely redraw it. Also, when we get to the 1539 // point of drawing it we will hold off and schedule 1540 // a new traversal instead. This is so we can tell the 1541 // window manager about all of the windows being displayed 1542 // before actually drawing them, so it can display then 1543 // all at once. 1544 newSurface = true; 1545 mFullRedrawNeeded = true; 1546 mPreviousTransparentRegion.setEmpty(); 1547 1548 if (mAttachInfo.mHardwareRenderer != null) { 1549 try { 1550 hwInitialized = mAttachInfo.mHardwareRenderer.initialize( 1551 mHolder.getSurface()); 1552 } catch (OutOfResourcesException e) { 1553 handleOutOfResourcesException(e); 1554 return; 1555 } 1556 } 1557 } 1558 } else if (!mSurface.isValid()) { 1559 // If the surface has been removed, then reset the scroll 1560 // positions. 1561 if (mLastScrolledFocus != null) { 1562 mLastScrolledFocus.clear(); 1563 } 1564 mScrollY = mCurScrollY = 0; 1565 if (mScroller != null) { 1566 mScroller.abortAnimation(); 1567 } 1568 disposeResizeBuffer(); 1569 // Our surface is gone 1570 if (mAttachInfo.mHardwareRenderer != null && 1571 mAttachInfo.mHardwareRenderer.isEnabled()) { 1572 mAttachInfo.mHardwareRenderer.destroy(true); 1573 } 1574 } else if (surfaceGenerationId != mSurface.getGenerationId() && 1575 mSurfaceHolder == null && mAttachInfo.mHardwareRenderer != null) { 1576 mFullRedrawNeeded = true; 1577 try { 1578 mAttachInfo.mHardwareRenderer.updateSurface(mHolder.getSurface()); 1579 } catch (OutOfResourcesException e) { 1580 handleOutOfResourcesException(e); 1581 return; 1582 } 1583 } 1584 } catch (RemoteException e) { 1585 } 1586 1587 if (DEBUG_ORIENTATION) Log.v( 1588 TAG, "Relayout returned: frame=" + frame + ", surface=" + mSurface); 1589 1590 attachInfo.mWindowLeft = frame.left; 1591 attachInfo.mWindowTop = frame.top; 1592 1593 // !!FIXME!! This next section handles the case where we did not get the 1594 // window size we asked for. We should avoid this by getting a maximum size from 1595 // the window session beforehand. 1596 if (mWidth != frame.width() || mHeight != frame.height()) { 1597 mWidth = frame.width(); 1598 mHeight = frame.height(); 1599 } 1600 1601 if (mSurfaceHolder != null) { 1602 // The app owns the surface; tell it about what is going on. 1603 if (mSurface.isValid()) { 1604 // XXX .copyFrom() doesn't work! 1605 //mSurfaceHolder.mSurface.copyFrom(mSurface); 1606 mSurfaceHolder.mSurface = mSurface; 1607 } 1608 mSurfaceHolder.setSurfaceFrameSize(mWidth, mHeight); 1609 mSurfaceHolder.mSurfaceLock.unlock(); 1610 if (mSurface.isValid()) { 1611 if (!hadSurface) { 1612 mSurfaceHolder.ungetCallbacks(); 1613 1614 mIsCreating = true; 1615 mSurfaceHolderCallback.surfaceCreated(mSurfaceHolder); 1616 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1617 if (callbacks != null) { 1618 for (SurfaceHolder.Callback c : callbacks) { 1619 c.surfaceCreated(mSurfaceHolder); 1620 } 1621 } 1622 surfaceChanged = true; 1623 } 1624 if (surfaceChanged) { 1625 mSurfaceHolderCallback.surfaceChanged(mSurfaceHolder, 1626 lp.format, mWidth, mHeight); 1627 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1628 if (callbacks != null) { 1629 for (SurfaceHolder.Callback c : callbacks) { 1630 c.surfaceChanged(mSurfaceHolder, lp.format, 1631 mWidth, mHeight); 1632 } 1633 } 1634 } 1635 mIsCreating = false; 1636 } else if (hadSurface) { 1637 mSurfaceHolder.ungetCallbacks(); 1638 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1639 mSurfaceHolderCallback.surfaceDestroyed(mSurfaceHolder); 1640 if (callbacks != null) { 1641 for (SurfaceHolder.Callback c : callbacks) { 1642 c.surfaceDestroyed(mSurfaceHolder); 1643 } 1644 } 1645 mSurfaceHolder.mSurfaceLock.lock(); 1646 try { 1647 mSurfaceHolder.mSurface = new Surface(); 1648 } finally { 1649 mSurfaceHolder.mSurfaceLock.unlock(); 1650 } 1651 } 1652 } 1653 1654 if (mAttachInfo.mHardwareRenderer != null && 1655 mAttachInfo.mHardwareRenderer.isEnabled()) { 1656 if (hwInitialized || 1657 mWidth != mAttachInfo.mHardwareRenderer.getWidth() || 1658 mHeight != mAttachInfo.mHardwareRenderer.getHeight()) { 1659 mAttachInfo.mHardwareRenderer.setup(mWidth, mHeight); 1660 if (!hwInitialized) { 1661 mAttachInfo.mHardwareRenderer.invalidate(mHolder.getSurface()); 1662 mFullRedrawNeeded = true; 1663 } 1664 } 1665 } 1666 1667 if (!mStopped) { 1668 boolean focusChangedDueToTouchMode = ensureTouchModeLocally( 1669 (relayoutResult&WindowManagerGlobal.RELAYOUT_RES_IN_TOUCH_MODE) != 0); 1670 if (focusChangedDueToTouchMode || mWidth != host.getMeasuredWidth() 1671 || mHeight != host.getMeasuredHeight() || contentInsetsChanged) { 1672 int childWidthMeasureSpec = getRootMeasureSpec(mWidth, lp.width); 1673 int childHeightMeasureSpec = getRootMeasureSpec(mHeight, lp.height); 1674 1675 if (DEBUG_LAYOUT) Log.v(TAG, "Ooops, something changed! mWidth=" 1676 + mWidth + " measuredWidth=" + host.getMeasuredWidth() 1677 + " mHeight=" + mHeight 1678 + " measuredHeight=" + host.getMeasuredHeight() 1679 + " coveredInsetsChanged=" + contentInsetsChanged); 1680 1681 // Ask host how big it wants to be 1682 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1683 1684 // Implementation of weights from WindowManager.LayoutParams 1685 // We just grow the dimensions as needed and re-measure if 1686 // needs be 1687 int width = host.getMeasuredWidth(); 1688 int height = host.getMeasuredHeight(); 1689 boolean measureAgain = false; 1690 1691 if (lp.horizontalWeight > 0.0f) { 1692 width += (int) ((mWidth - width) * lp.horizontalWeight); 1693 childWidthMeasureSpec = MeasureSpec.makeMeasureSpec(width, 1694 MeasureSpec.EXACTLY); 1695 measureAgain = true; 1696 } 1697 if (lp.verticalWeight > 0.0f) { 1698 height += (int) ((mHeight - height) * lp.verticalWeight); 1699 childHeightMeasureSpec = MeasureSpec.makeMeasureSpec(height, 1700 MeasureSpec.EXACTLY); 1701 measureAgain = true; 1702 } 1703 1704 if (measureAgain) { 1705 if (DEBUG_LAYOUT) Log.v(TAG, 1706 "And hey let's measure once more: width=" + width 1707 + " height=" + height); 1708 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1709 } 1710 1711 layoutRequested = true; 1712 } 1713 } 1714 } else { 1715 // Not the first pass and no window/insets/visibility change but the window 1716 // may have moved and we need check that and if so to update the left and right 1717 // in the attach info. We translate only the window frame since on window move 1718 // the window manager tells us only for the new frame but the insets are the 1719 // same and we do not want to translate them more than once. 1720 1721 // TODO: Well, we are checking whether the frame has changed similarly 1722 // to how this is done for the insets. This is however incorrect since 1723 // the insets and the frame are translated. For example, the old frame 1724 // was (1, 1 - 1, 1) and was translated to say (2, 2 - 2, 2), now the new 1725 // reported frame is (2, 2 - 2, 2) which implies no change but this is not 1726 // true since we are comparing a not translated value to a translated one. 1727 // This scenario is rare but we may want to fix that. 1728 1729 final boolean windowMoved = (attachInfo.mWindowLeft != frame.left 1730 || attachInfo.mWindowTop != frame.top); 1731 if (windowMoved) { 1732 if (mTranslator != null) { 1733 mTranslator.translateRectInScreenToAppWinFrame(frame); 1734 } 1735 attachInfo.mWindowLeft = frame.left; 1736 attachInfo.mWindowTop = frame.top; 1737 } 1738 } 1739 1740 final boolean didLayout = layoutRequested && !mStopped; 1741 boolean triggerGlobalLayoutListener = didLayout 1742 || attachInfo.mRecomputeGlobalAttributes; 1743 if (didLayout) { 1744 performLayout(lp, desiredWindowWidth, desiredWindowHeight); 1745 1746 // By this point all views have been sized and positioned 1747 // We can compute the transparent area 1748 1749 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 1750 // start out transparent 1751 // TODO: AVOID THAT CALL BY CACHING THE RESULT? 1752 host.getLocationInWindow(mTmpLocation); 1753 mTransparentRegion.set(mTmpLocation[0], mTmpLocation[1], 1754 mTmpLocation[0] + host.mRight - host.mLeft, 1755 mTmpLocation[1] + host.mBottom - host.mTop); 1756 1757 host.gatherTransparentRegion(mTransparentRegion); 1758 if (mTranslator != null) { 1759 mTranslator.translateRegionInWindowToScreen(mTransparentRegion); 1760 } 1761 1762 if (!mTransparentRegion.equals(mPreviousTransparentRegion)) { 1763 mPreviousTransparentRegion.set(mTransparentRegion); 1764 mFullRedrawNeeded = true; 1765 // reconfigure window manager 1766 try { 1767 mWindowSession.setTransparentRegion(mWindow, mTransparentRegion); 1768 } catch (RemoteException e) { 1769 } 1770 } 1771 } 1772 1773 if (DBG) { 1774 System.out.println("======================================"); 1775 System.out.println("performTraversals -- after setFrame"); 1776 host.debug(); 1777 } 1778 } 1779 1780 if (triggerGlobalLayoutListener) { 1781 attachInfo.mRecomputeGlobalAttributes = false; 1782 attachInfo.mTreeObserver.dispatchOnGlobalLayout(); 1783 } 1784 1785 if (computesInternalInsets) { 1786 // Clear the original insets. 1787 final ViewTreeObserver.InternalInsetsInfo insets = attachInfo.mGivenInternalInsets; 1788 insets.reset(); 1789 1790 // Compute new insets in place. 1791 attachInfo.mTreeObserver.dispatchOnComputeInternalInsets(insets); 1792 attachInfo.mHasNonEmptyGivenInternalInsets = !insets.isEmpty(); 1793 1794 // Tell the window manager. 1795 if (insetsPending || !mLastGivenInsets.equals(insets)) { 1796 mLastGivenInsets.set(insets); 1797 1798 // Translate insets to screen coordinates if needed. 1799 final Rect contentInsets; 1800 final Rect visibleInsets; 1801 final Region touchableRegion; 1802 if (mTranslator != null) { 1803 contentInsets = mTranslator.getTranslatedContentInsets(insets.contentInsets); 1804 visibleInsets = mTranslator.getTranslatedVisibleInsets(insets.visibleInsets); 1805 touchableRegion = mTranslator.getTranslatedTouchableArea(insets.touchableRegion); 1806 } else { 1807 contentInsets = insets.contentInsets; 1808 visibleInsets = insets.visibleInsets; 1809 touchableRegion = insets.touchableRegion; 1810 } 1811 1812 try { 1813 mWindowSession.setInsets(mWindow, insets.mTouchableInsets, 1814 contentInsets, visibleInsets, touchableRegion); 1815 } catch (RemoteException e) { 1816 } 1817 } 1818 } 1819 1820 boolean skipDraw = false; 1821 1822 if (mFirst) { 1823 // handle first focus request 1824 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: mView.hasFocus()=" 1825 + mView.hasFocus()); 1826 if (mView != null) { 1827 if (!mView.hasFocus()) { 1828 mView.requestFocus(View.FOCUS_FORWARD); 1829 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: requested focused view=" 1830 + mView.findFocus()); 1831 } else { 1832 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: existing focused view=" 1833 + mView.findFocus()); 1834 } 1835 } 1836 if ((relayoutResult & WindowManagerGlobal.RELAYOUT_RES_ANIMATING) != 0) { 1837 // The first time we relayout the window, if the system is 1838 // doing window animations, we want to hold of on any future 1839 // draws until the animation is done. 1840 mWindowsAnimating = true; 1841 } 1842 } else if (mWindowsAnimating) { 1843 skipDraw = true; 1844 } 1845 1846 mFirst = false; 1847 mWillDrawSoon = false; 1848 mNewSurfaceNeeded = false; 1849 mViewVisibility = viewVisibility; 1850 1851 if (mAttachInfo.mHasWindowFocus && !isInLocalFocusMode()) { 1852 final boolean imTarget = WindowManager.LayoutParams 1853 .mayUseInputMethod(mWindowAttributes.flags); 1854 if (imTarget != mLastWasImTarget) { 1855 mLastWasImTarget = imTarget; 1856 InputMethodManager imm = InputMethodManager.peekInstance(); 1857 if (imm != null && imTarget) { 1858 imm.startGettingWindowFocus(mView); 1859 imm.onWindowFocus(mView, mView.findFocus(), 1860 mWindowAttributes.softInputMode, 1861 !mHasHadWindowFocus, mWindowAttributes.flags); 1862 } 1863 } 1864 } 1865 1866 // Remember if we must report the next draw. 1867 if ((relayoutResult & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 1868 mReportNextDraw = true; 1869 } 1870 1871 boolean cancelDraw = attachInfo.mTreeObserver.dispatchOnPreDraw() || 1872 viewVisibility != View.VISIBLE; 1873 1874 if (!cancelDraw && !newSurface) { 1875 if (!skipDraw || mReportNextDraw) { 1876 if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 1877 for (int i = 0; i < mPendingTransitions.size(); ++i) { 1878 mPendingTransitions.get(i).startChangingAnimations(); 1879 } 1880 mPendingTransitions.clear(); 1881 } 1882 1883 performDraw(); 1884 } 1885 } else { 1886 if (viewVisibility == View.VISIBLE) { 1887 // Try again 1888 scheduleTraversals(); 1889 } else if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 1890 for (int i = 0; i < mPendingTransitions.size(); ++i) { 1891 mPendingTransitions.get(i).endChangingAnimations(); 1892 } 1893 mPendingTransitions.clear(); 1894 } 1895 } 1896 1897 mIsInTraversal = false; 1898 } 1899 1900 private void handleOutOfResourcesException(Surface.OutOfResourcesException e) { 1901 Log.e(TAG, "OutOfResourcesException initializing HW surface", e); 1902 try { 1903 if (!mWindowSession.outOfMemory(mWindow) && 1904 Process.myUid() != Process.SYSTEM_UID) { 1905 Slog.w(TAG, "No processes killed for memory; killing self"); 1906 Process.killProcess(Process.myPid()); 1907 } 1908 } catch (RemoteException ex) { 1909 } 1910 mLayoutRequested = true; // ask wm for a new surface next time. 1911 } 1912 1913 private void performMeasure(int childWidthMeasureSpec, int childHeightMeasureSpec) { 1914 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "measure"); 1915 try { 1916 mView.measure(childWidthMeasureSpec, childHeightMeasureSpec); 1917 } finally { 1918 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 1919 } 1920 } 1921 1922 /** 1923 * Called by {@link android.view.View#isInLayout()} to determine whether the view hierarchy 1924 * is currently undergoing a layout pass. 1925 * 1926 * @return whether the view hierarchy is currently undergoing a layout pass 1927 */ 1928 boolean isInLayout() { 1929 return mInLayout; 1930 } 1931 1932 /** 1933 * Called by {@link android.view.View#requestLayout()} if the view hierarchy is currently 1934 * undergoing a layout pass. requestLayout() should not generally be called during layout, 1935 * unless the container hierarchy knows what it is doing (i.e., it is fine as long as 1936 * all children in that container hierarchy are measured and laid out at the end of the layout 1937 * pass for that container). If requestLayout() is called anyway, we handle it correctly 1938 * by registering all requesters during a frame as it proceeds. At the end of the frame, 1939 * we check all of those views to see if any still have pending layout requests, which 1940 * indicates that they were not correctly handled by their container hierarchy. If that is 1941 * the case, we clear all such flags in the tree, to remove the buggy flag state that leads 1942 * to blank containers, and force a second request/measure/layout pass in this frame. If 1943 * more requestLayout() calls are received during that second layout pass, we post those 1944 * requests to the next frame to avoid possible infinite loops. 1945 * 1946 * <p>The return value from this method indicates whether the request should proceed 1947 * (if it is a request during the first layout pass) or should be skipped and posted to the 1948 * next frame (if it is a request during the second layout pass).</p> 1949 * 1950 * @param view the view that requested the layout. 1951 * 1952 * @return true if request should proceed, false otherwise. 1953 */ 1954 boolean requestLayoutDuringLayout(final View view) { 1955 if (view.mParent == null || view.mAttachInfo == null) { 1956 // Would not normally trigger another layout, so just let it pass through as usual 1957 return true; 1958 } 1959 if (!mLayoutRequesters.contains(view)) { 1960 mLayoutRequesters.add(view); 1961 } 1962 if (!mHandlingLayoutInLayoutRequest) { 1963 // Let the request proceed normally; it will be processed in a second layout pass 1964 // if necessary 1965 return true; 1966 } else { 1967 // Don't let the request proceed during the second layout pass. 1968 // It will post to the next frame instead. 1969 return false; 1970 } 1971 } 1972 1973 private void performLayout(WindowManager.LayoutParams lp, int desiredWindowWidth, 1974 int desiredWindowHeight) { 1975 mLayoutRequested = false; 1976 mScrollMayChange = true; 1977 mInLayout = true; 1978 1979 final View host = mView; 1980 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) { 1981 Log.v(TAG, "Laying out " + host + " to (" + 1982 host.getMeasuredWidth() + ", " + host.getMeasuredHeight() + ")"); 1983 } 1984 1985 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "layout"); 1986 try { 1987 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 1988 1989 mInLayout = false; 1990 int numViewsRequestingLayout = mLayoutRequesters.size(); 1991 if (numViewsRequestingLayout > 0) { 1992 // requestLayout() was called during layout. 1993 // If no layout-request flags are set on the requesting views, there is no problem. 1994 // If some requests are still pending, then we need to clear those flags and do 1995 // a full request/measure/layout pass to handle this situation. 1996 ArrayList<View> validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, 1997 false); 1998 if (validLayoutRequesters != null) { 1999 // Set this flag to indicate that any further requests are happening during 2000 // the second pass, which may result in posting those requests to the next 2001 // frame instead 2002 mHandlingLayoutInLayoutRequest = true; 2003 2004 // Process fresh layout requests, then measure and layout 2005 int numValidRequests = validLayoutRequesters.size(); 2006 for (int i = 0; i < numValidRequests; ++i) { 2007 final View view = validLayoutRequesters.get(i); 2008 Log.w("View", "requestLayout() improperly called by " + view + 2009 " during layout: running second layout pass"); 2010 view.requestLayout(); 2011 } 2012 measureHierarchy(host, lp, mView.getContext().getResources(), 2013 desiredWindowWidth, desiredWindowHeight); 2014 mInLayout = true; 2015 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 2016 2017 mHandlingLayoutInLayoutRequest = false; 2018 2019 // Check the valid requests again, this time without checking/clearing the 2020 // layout flags, since requests happening during the second pass get noop'd 2021 validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, true); 2022 if (validLayoutRequesters != null) { 2023 final ArrayList<View> finalRequesters = validLayoutRequesters; 2024 // Post second-pass requests to the next frame 2025 getRunQueue().post(new Runnable() { 2026 @Override 2027 public void run() { 2028 int numValidRequests = finalRequesters.size(); 2029 for (int i = 0; i < numValidRequests; ++i) { 2030 final View view = finalRequesters.get(i); 2031 Log.w("View", "requestLayout() improperly called by " + view + 2032 " during second layout pass: posting in next frame"); 2033 view.requestLayout(); 2034 } 2035 } 2036 }); 2037 } 2038 } 2039 2040 } 2041 } finally { 2042 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2043 } 2044 mInLayout = false; 2045 } 2046 2047 /** 2048 * This method is called during layout when there have been calls to requestLayout() during 2049 * layout. It walks through the list of views that requested layout to determine which ones 2050 * still need it, based on visibility in the hierarchy and whether they have already been 2051 * handled (as is usually the case with ListView children). 2052 * 2053 * @param layoutRequesters The list of views that requested layout during layout 2054 * @param secondLayoutRequests Whether the requests were issued during the second layout pass. 2055 * If so, the FORCE_LAYOUT flag was not set on requesters. 2056 * @return A list of the actual views that still need to be laid out. 2057 */ 2058 private ArrayList<View> getValidLayoutRequesters(ArrayList<View> layoutRequesters, 2059 boolean secondLayoutRequests) { 2060 2061 int numViewsRequestingLayout = layoutRequesters.size(); 2062 ArrayList<View> validLayoutRequesters = null; 2063 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2064 View view = layoutRequesters.get(i); 2065 if (view != null && view.mAttachInfo != null && view.mParent != null && 2066 (secondLayoutRequests || (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) == 2067 View.PFLAG_FORCE_LAYOUT)) { 2068 boolean gone = false; 2069 View parent = view; 2070 // Only trigger new requests for views in a non-GONE hierarchy 2071 while (parent != null) { 2072 if ((parent.mViewFlags & View.VISIBILITY_MASK) == View.GONE) { 2073 gone = true; 2074 break; 2075 } 2076 if (parent.mParent instanceof View) { 2077 parent = (View) parent.mParent; 2078 } else { 2079 parent = null; 2080 } 2081 } 2082 if (!gone) { 2083 if (validLayoutRequesters == null) { 2084 validLayoutRequesters = new ArrayList<View>(); 2085 } 2086 validLayoutRequesters.add(view); 2087 } 2088 } 2089 } 2090 if (!secondLayoutRequests) { 2091 // If we're checking the layout flags, then we need to clean them up also 2092 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2093 View view = layoutRequesters.get(i); 2094 while (view != null && 2095 (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) != 0) { 2096 view.mPrivateFlags &= ~View.PFLAG_FORCE_LAYOUT; 2097 if (view.mParent instanceof View) { 2098 view = (View) view.mParent; 2099 } else { 2100 view = null; 2101 } 2102 } 2103 } 2104 } 2105 layoutRequesters.clear(); 2106 return validLayoutRequesters; 2107 } 2108 2109 @Override 2110 public void requestTransparentRegion(View child) { 2111 // the test below should not fail unless someone is messing with us 2112 checkThread(); 2113 if (mView == child) { 2114 mView.mPrivateFlags |= View.PFLAG_REQUEST_TRANSPARENT_REGIONS; 2115 // Need to make sure we re-evaluate the window attributes next 2116 // time around, to ensure the window has the correct format. 2117 mWindowAttributesChanged = true; 2118 mWindowAttributesChangesFlag = 0; 2119 requestLayout(); 2120 } 2121 } 2122 2123 /** 2124 * Figures out the measure spec for the root view in a window based on it's 2125 * layout params. 2126 * 2127 * @param windowSize 2128 * The available width or height of the window 2129 * 2130 * @param rootDimension 2131 * The layout params for one dimension (width or height) of the 2132 * window. 2133 * 2134 * @return The measure spec to use to measure the root view. 2135 */ 2136 private static int getRootMeasureSpec(int windowSize, int rootDimension) { 2137 int measureSpec; 2138 switch (rootDimension) { 2139 2140 case ViewGroup.LayoutParams.MATCH_PARENT: 2141 // Window can't resize. Force root view to be windowSize. 2142 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.EXACTLY); 2143 break; 2144 case ViewGroup.LayoutParams.WRAP_CONTENT: 2145 // Window can resize. Set max size for root view. 2146 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.AT_MOST); 2147 break; 2148 default: 2149 // Window wants to be an exact size. Force root view to be that size. 2150 measureSpec = MeasureSpec.makeMeasureSpec(rootDimension, MeasureSpec.EXACTLY); 2151 break; 2152 } 2153 return measureSpec; 2154 } 2155 2156 int mHardwareYOffset; 2157 int mResizeAlpha; 2158 final Paint mResizePaint = new Paint(); 2159 2160 @Override 2161 public void onHardwarePreDraw(HardwareCanvas canvas) { 2162 canvas.translate(0, -mHardwareYOffset); 2163 } 2164 2165 @Override 2166 public void onHardwarePostDraw(HardwareCanvas canvas) { 2167 if (mResizeBuffer != null) { 2168 mResizePaint.setAlpha(mResizeAlpha); 2169 canvas.drawHardwareLayer(mResizeBuffer, 0.0f, mHardwareYOffset, mResizePaint); 2170 } 2171 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2172 } 2173 2174 /** 2175 * @hide 2176 */ 2177 void outputDisplayList(View view) { 2178 if (mAttachInfo != null && mAttachInfo.mHardwareCanvas != null) { 2179 DisplayList displayList = view.getDisplayList(); 2180 if (displayList != null) { 2181 mAttachInfo.mHardwareCanvas.outputDisplayList(displayList); 2182 } 2183 } 2184 } 2185 2186 /** 2187 * @see #PROPERTY_PROFILE_RENDERING 2188 */ 2189 private void profileRendering(boolean enabled) { 2190 if (mProfileRendering) { 2191 mRenderProfilingEnabled = enabled; 2192 2193 if (mRenderProfiler != null) { 2194 mChoreographer.removeFrameCallback(mRenderProfiler); 2195 } 2196 if (mRenderProfilingEnabled) { 2197 if (mRenderProfiler == null) { 2198 mRenderProfiler = new Choreographer.FrameCallback() { 2199 @Override 2200 public void doFrame(long frameTimeNanos) { 2201 mDirty.set(0, 0, mWidth, mHeight); 2202 scheduleTraversals(); 2203 if (mRenderProfilingEnabled) { 2204 mChoreographer.postFrameCallback(mRenderProfiler); 2205 } 2206 } 2207 }; 2208 } 2209 mChoreographer.postFrameCallback(mRenderProfiler); 2210 } else { 2211 mRenderProfiler = null; 2212 } 2213 } 2214 } 2215 2216 /** 2217 * Called from draw() when DEBUG_FPS is enabled 2218 */ 2219 private void trackFPS() { 2220 // Tracks frames per second drawn. First value in a series of draws may be bogus 2221 // because it down not account for the intervening idle time 2222 long nowTime = System.currentTimeMillis(); 2223 if (mFpsStartTime < 0) { 2224 mFpsStartTime = mFpsPrevTime = nowTime; 2225 mFpsNumFrames = 0; 2226 } else { 2227 ++mFpsNumFrames; 2228 String thisHash = Integer.toHexString(System.identityHashCode(this)); 2229 long frameTime = nowTime - mFpsPrevTime; 2230 long totalTime = nowTime - mFpsStartTime; 2231 Log.v(TAG, "0x" + thisHash + "\tFrame time:\t" + frameTime); 2232 mFpsPrevTime = nowTime; 2233 if (totalTime > 1000) { 2234 float fps = (float) mFpsNumFrames * 1000 / totalTime; 2235 Log.v(TAG, "0x" + thisHash + "\tFPS:\t" + fps); 2236 mFpsStartTime = nowTime; 2237 mFpsNumFrames = 0; 2238 } 2239 } 2240 } 2241 2242 private void performDraw() { 2243 if (!mAttachInfo.mScreenOn && !mReportNextDraw) { 2244 return; 2245 } 2246 2247 final boolean fullRedrawNeeded = mFullRedrawNeeded; 2248 mFullRedrawNeeded = false; 2249 2250 mIsDrawing = true; 2251 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "draw"); 2252 try { 2253 draw(fullRedrawNeeded); 2254 } finally { 2255 mIsDrawing = false; 2256 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2257 } 2258 2259 if (mReportNextDraw) { 2260 mReportNextDraw = false; 2261 2262 if (LOCAL_LOGV) { 2263 Log.v(TAG, "FINISHED DRAWING: " + mWindowAttributes.getTitle()); 2264 } 2265 if (mSurfaceHolder != null && mSurface.isValid()) { 2266 mSurfaceHolderCallback.surfaceRedrawNeeded(mSurfaceHolder); 2267 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 2268 if (callbacks != null) { 2269 for (SurfaceHolder.Callback c : callbacks) { 2270 if (c instanceof SurfaceHolder.Callback2) { 2271 ((SurfaceHolder.Callback2)c).surfaceRedrawNeeded( 2272 mSurfaceHolder); 2273 } 2274 } 2275 } 2276 } 2277 try { 2278 mWindowSession.finishDrawing(mWindow); 2279 } catch (RemoteException e) { 2280 } 2281 } 2282 } 2283 2284 private void draw(boolean fullRedrawNeeded) { 2285 Surface surface = mSurface; 2286 if (!surface.isValid()) { 2287 return; 2288 } 2289 2290 if (DEBUG_FPS) { 2291 trackFPS(); 2292 } 2293 2294 if (!sFirstDrawComplete) { 2295 synchronized (sFirstDrawHandlers) { 2296 sFirstDrawComplete = true; 2297 final int count = sFirstDrawHandlers.size(); 2298 for (int i = 0; i< count; i++) { 2299 mHandler.post(sFirstDrawHandlers.get(i)); 2300 } 2301 } 2302 } 2303 2304 scrollToRectOrFocus(null, false); 2305 2306 final AttachInfo attachInfo = mAttachInfo; 2307 if (attachInfo.mViewScrollChanged) { 2308 attachInfo.mViewScrollChanged = false; 2309 attachInfo.mTreeObserver.dispatchOnScrollChanged(); 2310 } 2311 2312 int yoff; 2313 boolean animating = mScroller != null && mScroller.computeScrollOffset(); 2314 if (animating) { 2315 yoff = mScroller.getCurrY(); 2316 } else { 2317 yoff = mScrollY; 2318 } 2319 if (mCurScrollY != yoff) { 2320 mCurScrollY = yoff; 2321 fullRedrawNeeded = true; 2322 } 2323 2324 final float appScale = attachInfo.mApplicationScale; 2325 final boolean scalingRequired = attachInfo.mScalingRequired; 2326 2327 int resizeAlpha = 0; 2328 if (mResizeBuffer != null) { 2329 long deltaTime = SystemClock.uptimeMillis() - mResizeBufferStartTime; 2330 if (deltaTime < mResizeBufferDuration) { 2331 float amt = deltaTime/(float) mResizeBufferDuration; 2332 amt = mResizeInterpolator.getInterpolation(amt); 2333 animating = true; 2334 resizeAlpha = 255 - (int)(amt*255); 2335 } else { 2336 disposeResizeBuffer(); 2337 } 2338 } 2339 2340 final Rect dirty = mDirty; 2341 if (mSurfaceHolder != null) { 2342 // The app owns the surface, we won't draw. 2343 dirty.setEmpty(); 2344 if (animating) { 2345 if (mScroller != null) { 2346 mScroller.abortAnimation(); 2347 } 2348 disposeResizeBuffer(); 2349 } 2350 return; 2351 } 2352 2353 if (fullRedrawNeeded) { 2354 attachInfo.mIgnoreDirtyState = true; 2355 dirty.set(0, 0, (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 2356 } 2357 2358 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2359 Log.v(TAG, "Draw " + mView + "/" 2360 + mWindowAttributes.getTitle() 2361 + ": dirty={" + dirty.left + "," + dirty.top 2362 + "," + dirty.right + "," + dirty.bottom + "} surface=" 2363 + surface + " surface.isValid()=" + surface.isValid() + ", appScale:" + 2364 appScale + ", width=" + mWidth + ", height=" + mHeight); 2365 } 2366 2367 invalidateDisplayLists(); 2368 2369 attachInfo.mTreeObserver.dispatchOnDraw(); 2370 2371 if (!dirty.isEmpty() || mIsAnimating) { 2372 if (attachInfo.mHardwareRenderer != null && attachInfo.mHardwareRenderer.isEnabled()) { 2373 // Draw with hardware renderer. 2374 mIsAnimating = false; 2375 mHardwareYOffset = yoff; 2376 mResizeAlpha = resizeAlpha; 2377 2378 mCurrentDirty.set(dirty); 2379 dirty.setEmpty(); 2380 2381 attachInfo.mHardwareRenderer.draw(mView, attachInfo, this, 2382 animating ? null : mCurrentDirty); 2383 } else { 2384 // If we get here with a disabled & requested hardware renderer, something went 2385 // wrong (an invalidate posted right before we destroyed the hardware surface 2386 // for instance) so we should just bail out. Locking the surface with software 2387 // rendering at this point would lock it forever and prevent hardware renderer 2388 // from doing its job when it comes back. 2389 // Before we request a new frame we must however attempt to reinitiliaze the 2390 // hardware renderer if it's in requested state. This would happen after an 2391 // eglTerminate() for instance. 2392 if (attachInfo.mHardwareRenderer != null && 2393 !attachInfo.mHardwareRenderer.isEnabled() && 2394 attachInfo.mHardwareRenderer.isRequested()) { 2395 2396 try { 2397 attachInfo.mHardwareRenderer.initializeIfNeeded(mWidth, mHeight, 2398 mHolder.getSurface()); 2399 } catch (OutOfResourcesException e) { 2400 handleOutOfResourcesException(e); 2401 return; 2402 } 2403 2404 mFullRedrawNeeded = true; 2405 scheduleTraversals(); 2406 return; 2407 } 2408 2409 if (!drawSoftware(surface, attachInfo, yoff, scalingRequired, dirty)) { 2410 return; 2411 } 2412 } 2413 } 2414 2415 if (animating) { 2416 mFullRedrawNeeded = true; 2417 scheduleTraversals(); 2418 } 2419 } 2420 2421 /** 2422 * @return true if drawing was succesfull, false if an error occurred 2423 */ 2424 private boolean drawSoftware(Surface surface, AttachInfo attachInfo, int yoff, 2425 boolean scalingRequired, Rect dirty) { 2426 2427 // Draw with software renderer. 2428 Canvas canvas; 2429 try { 2430 int left = dirty.left; 2431 int top = dirty.top; 2432 int right = dirty.right; 2433 int bottom = dirty.bottom; 2434 2435 canvas = mSurface.lockCanvas(dirty); 2436 2437 // The dirty rectangle can be modified by Surface.lockCanvas() 2438 //noinspection ConstantConditions 2439 if (left != dirty.left || top != dirty.top || right != dirty.right || 2440 bottom != dirty.bottom) { 2441 attachInfo.mIgnoreDirtyState = true; 2442 } 2443 2444 // TODO: Do this in native 2445 canvas.setDensity(mDensity); 2446 } catch (Surface.OutOfResourcesException e) { 2447 handleOutOfResourcesException(e); 2448 return false; 2449 } catch (IllegalArgumentException e) { 2450 Log.e(TAG, "Could not lock surface", e); 2451 // Don't assume this is due to out of memory, it could be 2452 // something else, and if it is something else then we could 2453 // kill stuff (or ourself) for no reason. 2454 mLayoutRequested = true; // ask wm for a new surface next time. 2455 return false; 2456 } 2457 2458 try { 2459 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2460 Log.v(TAG, "Surface " + surface + " drawing to bitmap w=" 2461 + canvas.getWidth() + ", h=" + canvas.getHeight()); 2462 //canvas.drawARGB(255, 255, 0, 0); 2463 } 2464 2465 // If this bitmap's format includes an alpha channel, we 2466 // need to clear it before drawing so that the child will 2467 // properly re-composite its drawing on a transparent 2468 // background. This automatically respects the clip/dirty region 2469 // or 2470 // If we are applying an offset, we need to clear the area 2471 // where the offset doesn't appear to avoid having garbage 2472 // left in the blank areas. 2473 if (!canvas.isOpaque() || yoff != 0) { 2474 canvas.drawColor(0, PorterDuff.Mode.CLEAR); 2475 } 2476 2477 dirty.setEmpty(); 2478 mIsAnimating = false; 2479 attachInfo.mDrawingTime = SystemClock.uptimeMillis(); 2480 mView.mPrivateFlags |= View.PFLAG_DRAWN; 2481 2482 if (DEBUG_DRAW) { 2483 Context cxt = mView.getContext(); 2484 Log.i(TAG, "Drawing: package:" + cxt.getPackageName() + 2485 ", metrics=" + cxt.getResources().getDisplayMetrics() + 2486 ", compatibilityInfo=" + cxt.getResources().getCompatibilityInfo()); 2487 } 2488 try { 2489 canvas.translate(0, -yoff); 2490 if (mTranslator != null) { 2491 mTranslator.translateCanvas(canvas); 2492 } 2493 canvas.setScreenDensity(scalingRequired ? mNoncompatDensity : 0); 2494 attachInfo.mSetIgnoreDirtyState = false; 2495 2496 mView.draw(canvas); 2497 2498 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2499 } finally { 2500 if (!attachInfo.mSetIgnoreDirtyState) { 2501 // Only clear the flag if it was not set during the mView.draw() call 2502 attachInfo.mIgnoreDirtyState = false; 2503 } 2504 } 2505 } finally { 2506 try { 2507 surface.unlockCanvasAndPost(canvas); 2508 } catch (IllegalArgumentException e) { 2509 Log.e(TAG, "Could not unlock surface", e); 2510 mLayoutRequested = true; // ask wm for a new surface next time. 2511 //noinspection ReturnInsideFinallyBlock 2512 return false; 2513 } 2514 2515 if (LOCAL_LOGV) { 2516 Log.v(TAG, "Surface " + surface + " unlockCanvasAndPost"); 2517 } 2518 } 2519 return true; 2520 } 2521 2522 /** 2523 * We want to draw a highlight around the current accessibility focused. 2524 * Since adding a style for all possible view is not a viable option we 2525 * have this specialized drawing method. 2526 * 2527 * Note: We are doing this here to be able to draw the highlight for 2528 * virtual views in addition to real ones. 2529 * 2530 * @param canvas The canvas on which to draw. 2531 */ 2532 private void drawAccessibilityFocusedDrawableIfNeeded(Canvas canvas) { 2533 AccessibilityManager manager = AccessibilityManager.getInstance(mView.mContext); 2534 if (!manager.isEnabled() || !manager.isTouchExplorationEnabled()) { 2535 return; 2536 } 2537 if (mAccessibilityFocusedHost == null || mAccessibilityFocusedHost.mAttachInfo == null) { 2538 return; 2539 } 2540 Drawable drawable = getAccessibilityFocusedDrawable(); 2541 if (drawable == null) { 2542 return; 2543 } 2544 AccessibilityNodeProvider provider = 2545 mAccessibilityFocusedHost.getAccessibilityNodeProvider(); 2546 Rect bounds = mView.mAttachInfo.mTmpInvalRect; 2547 if (provider == null) { 2548 mAccessibilityFocusedHost.getBoundsOnScreen(bounds); 2549 } else { 2550 if (mAccessibilityFocusedVirtualView == null) { 2551 return; 2552 } 2553 mAccessibilityFocusedVirtualView.getBoundsInScreen(bounds); 2554 } 2555 bounds.offset(-mAttachInfo.mWindowLeft, -mAttachInfo.mWindowTop); 2556 bounds.intersect(0, 0, mAttachInfo.mViewRootImpl.mWidth, mAttachInfo.mViewRootImpl.mHeight); 2557 drawable.setBounds(bounds); 2558 drawable.draw(canvas); 2559 } 2560 2561 private Drawable getAccessibilityFocusedDrawable() { 2562 if (mAttachInfo != null) { 2563 // Lazily load the accessibility focus drawable. 2564 if (mAttachInfo.mAccessibilityFocusDrawable == null) { 2565 TypedValue value = new TypedValue(); 2566 final boolean resolved = mView.mContext.getTheme().resolveAttribute( 2567 R.attr.accessibilityFocusedDrawable, value, true); 2568 if (resolved) { 2569 mAttachInfo.mAccessibilityFocusDrawable = 2570 mView.mContext.getResources().getDrawable(value.resourceId); 2571 } 2572 } 2573 return mAttachInfo.mAccessibilityFocusDrawable; 2574 } 2575 return null; 2576 } 2577 2578 void invalidateDisplayLists() { 2579 final ArrayList<DisplayList> displayLists = mDisplayLists; 2580 final int count = displayLists.size(); 2581 2582 for (int i = 0; i < count; i++) { 2583 final DisplayList displayList = displayLists.get(i); 2584 if (displayList.isDirty()) { 2585 displayList.reset(); 2586 } 2587 } 2588 2589 displayLists.clear(); 2590 } 2591 2592 /** 2593 * @hide 2594 */ 2595 public void setDrawDuringWindowsAnimating(boolean value) { 2596 mDrawDuringWindowsAnimating = value; 2597 if (value) { 2598 handleDispatchDoneAnimating(); 2599 } 2600 } 2601 2602 boolean scrollToRectOrFocus(Rect rectangle, boolean immediate) { 2603 final View.AttachInfo attachInfo = mAttachInfo; 2604 final Rect ci = attachInfo.mContentInsets; 2605 final Rect vi = attachInfo.mVisibleInsets; 2606 int scrollY = 0; 2607 boolean handled = false; 2608 2609 if (vi.left > ci.left || vi.top > ci.top 2610 || vi.right > ci.right || vi.bottom > ci.bottom) { 2611 // We'll assume that we aren't going to change the scroll 2612 // offset, since we want to avoid that unless it is actually 2613 // going to make the focus visible... otherwise we scroll 2614 // all over the place. 2615 scrollY = mScrollY; 2616 // We can be called for two different situations: during a draw, 2617 // to update the scroll position if the focus has changed (in which 2618 // case 'rectangle' is null), or in response to a 2619 // requestChildRectangleOnScreen() call (in which case 'rectangle' 2620 // is non-null and we just want to scroll to whatever that 2621 // rectangle is). 2622 final View focus = mView.findFocus(); 2623 if (focus == null) { 2624 return false; 2625 } 2626 View lastScrolledFocus = (mLastScrolledFocus != null) ? mLastScrolledFocus.get() : null; 2627 if (focus != lastScrolledFocus) { 2628 // If the focus has changed, then ignore any requests to scroll 2629 // to a rectangle; first we want to make sure the entire focus 2630 // view is visible. 2631 rectangle = null; 2632 } 2633 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Eval scroll: focus=" + focus 2634 + " rectangle=" + rectangle + " ci=" + ci 2635 + " vi=" + vi); 2636 if (focus == lastScrolledFocus && !mScrollMayChange && rectangle == null) { 2637 // Optimization: if the focus hasn't changed since last 2638 // time, and no layout has happened, then just leave things 2639 // as they are. 2640 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Keeping scroll y=" 2641 + mScrollY + " vi=" + vi.toShortString()); 2642 } else { 2643 // We need to determine if the currently focused view is 2644 // within the visible part of the window and, if not, apply 2645 // a pan so it can be seen. 2646 mLastScrolledFocus = new WeakReference<View>(focus); 2647 mScrollMayChange = false; 2648 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Need to scroll?"); 2649 // Try to find the rectangle from the focus view. 2650 if (focus.getGlobalVisibleRect(mVisRect, null)) { 2651 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Root w=" 2652 + mView.getWidth() + " h=" + mView.getHeight() 2653 + " ci=" + ci.toShortString() 2654 + " vi=" + vi.toShortString()); 2655 if (rectangle == null) { 2656 focus.getFocusedRect(mTempRect); 2657 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Focus " + focus 2658 + ": focusRect=" + mTempRect.toShortString()); 2659 if (mView instanceof ViewGroup) { 2660 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 2661 focus, mTempRect); 2662 } 2663 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2664 "Focus in window: focusRect=" 2665 + mTempRect.toShortString() 2666 + " visRect=" + mVisRect.toShortString()); 2667 } else { 2668 mTempRect.set(rectangle); 2669 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2670 "Request scroll to rect: " 2671 + mTempRect.toShortString() 2672 + " visRect=" + mVisRect.toShortString()); 2673 } 2674 if (mTempRect.intersect(mVisRect)) { 2675 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2676 "Focus window visible rect: " 2677 + mTempRect.toShortString()); 2678 if (mTempRect.height() > 2679 (mView.getHeight()-vi.top-vi.bottom)) { 2680 // If the focus simply is not going to fit, then 2681 // best is probably just to leave things as-is. 2682 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2683 "Too tall; leaving scrollY=" + scrollY); 2684 } else if ((mTempRect.top-scrollY) < vi.top) { 2685 scrollY -= vi.top - (mTempRect.top-scrollY); 2686 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2687 "Top covered; scrollY=" + scrollY); 2688 } else if ((mTempRect.bottom-scrollY) 2689 > (mView.getHeight()-vi.bottom)) { 2690 scrollY += (mTempRect.bottom-scrollY) 2691 - (mView.getHeight()-vi.bottom); 2692 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2693 "Bottom covered; scrollY=" + scrollY); 2694 } 2695 handled = true; 2696 } 2697 } 2698 } 2699 } 2700 2701 if (scrollY != mScrollY) { 2702 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Pan scroll changed: old=" 2703 + mScrollY + " , new=" + scrollY); 2704 if (!immediate && mResizeBuffer == null) { 2705 if (mScroller == null) { 2706 mScroller = new Scroller(mView.getContext()); 2707 } 2708 mScroller.startScroll(0, mScrollY, 0, scrollY-mScrollY); 2709 } else if (mScroller != null) { 2710 mScroller.abortAnimation(); 2711 } 2712 mScrollY = scrollY; 2713 } 2714 2715 return handled; 2716 } 2717 2718 /** 2719 * @hide 2720 */ 2721 public View getAccessibilityFocusedHost() { 2722 return mAccessibilityFocusedHost; 2723 } 2724 2725 /** 2726 * @hide 2727 */ 2728 public AccessibilityNodeInfo getAccessibilityFocusedVirtualView() { 2729 return mAccessibilityFocusedVirtualView; 2730 } 2731 2732 void setAccessibilityFocus(View view, AccessibilityNodeInfo node) { 2733 // If we have a virtual view with accessibility focus we need 2734 // to clear the focus and invalidate the virtual view bounds. 2735 if (mAccessibilityFocusedVirtualView != null) { 2736 2737 AccessibilityNodeInfo focusNode = mAccessibilityFocusedVirtualView; 2738 View focusHost = mAccessibilityFocusedHost; 2739 2740 // Wipe the state of the current accessibility focus since 2741 // the call into the provider to clear accessibility focus 2742 // will fire an accessibility event which will end up calling 2743 // this method and we want to have clean state when this 2744 // invocation happens. 2745 mAccessibilityFocusedHost = null; 2746 mAccessibilityFocusedVirtualView = null; 2747 2748 // Clear accessibility focus on the host after clearing state since 2749 // this method may be reentrant. 2750 focusHost.clearAccessibilityFocusNoCallbacks(); 2751 2752 AccessibilityNodeProvider provider = focusHost.getAccessibilityNodeProvider(); 2753 if (provider != null) { 2754 // Invalidate the area of the cleared accessibility focus. 2755 focusNode.getBoundsInParent(mTempRect); 2756 focusHost.invalidate(mTempRect); 2757 // Clear accessibility focus in the virtual node. 2758 final int virtualNodeId = AccessibilityNodeInfo.getVirtualDescendantId( 2759 focusNode.getSourceNodeId()); 2760 provider.performAction(virtualNodeId, 2761 AccessibilityNodeInfo.ACTION_CLEAR_ACCESSIBILITY_FOCUS, null); 2762 } 2763 focusNode.recycle(); 2764 } 2765 if (mAccessibilityFocusedHost != null) { 2766 // Clear accessibility focus in the view. 2767 mAccessibilityFocusedHost.clearAccessibilityFocusNoCallbacks(); 2768 } 2769 2770 // Set the new focus host and node. 2771 mAccessibilityFocusedHost = view; 2772 mAccessibilityFocusedVirtualView = node; 2773 } 2774 2775 @Override 2776 public void requestChildFocus(View child, View focused) { 2777 if (DEBUG_INPUT_RESIZE) { 2778 Log.v(TAG, "Request child focus: focus now " + focused); 2779 } 2780 checkThread(); 2781 scheduleTraversals(); 2782 } 2783 2784 @Override 2785 public void clearChildFocus(View child) { 2786 if (DEBUG_INPUT_RESIZE) { 2787 Log.v(TAG, "Clearing child focus"); 2788 } 2789 checkThread(); 2790 scheduleTraversals(); 2791 } 2792 2793 @Override 2794 public ViewParent getParentForAccessibility() { 2795 return null; 2796 } 2797 2798 @Override 2799 public void focusableViewAvailable(View v) { 2800 checkThread(); 2801 if (mView != null) { 2802 if (!mView.hasFocus()) { 2803 v.requestFocus(); 2804 } else { 2805 // the one case where will transfer focus away from the current one 2806 // is if the current view is a view group that prefers to give focus 2807 // to its children first AND the view is a descendant of it. 2808 View focused = mView.findFocus(); 2809 if (focused instanceof ViewGroup) { 2810 ViewGroup group = (ViewGroup) focused; 2811 if (group.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 2812 && isViewDescendantOf(v, focused)) { 2813 v.requestFocus(); 2814 } 2815 } 2816 } 2817 } 2818 } 2819 2820 @Override 2821 public void recomputeViewAttributes(View child) { 2822 checkThread(); 2823 if (mView == child) { 2824 mAttachInfo.mRecomputeGlobalAttributes = true; 2825 if (!mWillDrawSoon) { 2826 scheduleTraversals(); 2827 } 2828 } 2829 } 2830 2831 void dispatchDetachedFromWindow() { 2832 if (mView != null && mView.mAttachInfo != null) { 2833 if (mAttachInfo.mHardwareRenderer != null && 2834 mAttachInfo.mHardwareRenderer.isEnabled()) { 2835 mAttachInfo.mHardwareRenderer.validate(); 2836 } 2837 mAttachInfo.mTreeObserver.dispatchOnWindowAttachedChange(false); 2838 mView.dispatchDetachedFromWindow(); 2839 } 2840 2841 mAccessibilityInteractionConnectionManager.ensureNoConnection(); 2842 mAccessibilityManager.removeAccessibilityStateChangeListener( 2843 mAccessibilityInteractionConnectionManager); 2844 removeSendWindowContentChangedCallback(); 2845 2846 destroyHardwareRenderer(); 2847 2848 setAccessibilityFocus(null, null); 2849 2850 mView.assignParent(null); 2851 mView = null; 2852 mAttachInfo.mRootView = null; 2853 mAttachInfo.mSurface = null; 2854 2855 mSurface.release(); 2856 2857 if (mInputQueueCallback != null && mInputQueue != null) { 2858 mInputQueueCallback.onInputQueueDestroyed(mInputQueue); 2859 mInputQueue.dispose(); 2860 mInputQueueCallback = null; 2861 mInputQueue = null; 2862 } 2863 if (mInputEventReceiver != null) { 2864 mInputEventReceiver.dispose(); 2865 mInputEventReceiver = null; 2866 } 2867 try { 2868 mWindowSession.remove(mWindow); 2869 } catch (RemoteException e) { 2870 } 2871 2872 // Dispose the input channel after removing the window so the Window Manager 2873 // doesn't interpret the input channel being closed as an abnormal termination. 2874 if (mInputChannel != null) { 2875 mInputChannel.dispose(); 2876 mInputChannel = null; 2877 } 2878 2879 unscheduleTraversals(); 2880 } 2881 2882 void updateConfiguration(Configuration config, boolean force) { 2883 if (DEBUG_CONFIGURATION) Log.v(TAG, 2884 "Applying new config to window " 2885 + mWindowAttributes.getTitle() 2886 + ": " + config); 2887 2888 CompatibilityInfo ci = mDisplayAdjustments.getCompatibilityInfo(); 2889 if (!ci.equals(CompatibilityInfo.DEFAULT_COMPATIBILITY_INFO)) { 2890 config = new Configuration(config); 2891 ci.applyToConfiguration(mNoncompatDensity, config); 2892 } 2893 2894 synchronized (sConfigCallbacks) { 2895 for (int i=sConfigCallbacks.size()-1; i>=0; i--) { 2896 sConfigCallbacks.get(i).onConfigurationChanged(config); 2897 } 2898 } 2899 if (mView != null) { 2900 // At this point the resources have been updated to 2901 // have the most recent config, whatever that is. Use 2902 // the one in them which may be newer. 2903 config = mView.getResources().getConfiguration(); 2904 if (force || mLastConfiguration.diff(config) != 0) { 2905 final int lastLayoutDirection = mLastConfiguration.getLayoutDirection(); 2906 final int currentLayoutDirection = config.getLayoutDirection(); 2907 mLastConfiguration.setTo(config); 2908 if (lastLayoutDirection != currentLayoutDirection && 2909 mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 2910 mView.setLayoutDirection(currentLayoutDirection); 2911 } 2912 mView.dispatchConfigurationChanged(config); 2913 } 2914 } 2915 2916 mFlipControllerFallbackKeys = 2917 mContext.getResources().getBoolean(R.bool.flip_controller_fallback_keys); 2918 } 2919 2920 /** 2921 * Return true if child is an ancestor of parent, (or equal to the parent). 2922 */ 2923 public static boolean isViewDescendantOf(View child, View parent) { 2924 if (child == parent) { 2925 return true; 2926 } 2927 2928 final ViewParent theParent = child.getParent(); 2929 return (theParent instanceof ViewGroup) && isViewDescendantOf((View) theParent, parent); 2930 } 2931 2932 private static void forceLayout(View view) { 2933 view.forceLayout(); 2934 if (view instanceof ViewGroup) { 2935 ViewGroup group = (ViewGroup) view; 2936 final int count = group.getChildCount(); 2937 for (int i = 0; i < count; i++) { 2938 forceLayout(group.getChildAt(i)); 2939 } 2940 } 2941 } 2942 2943 private final static int MSG_INVALIDATE = 1; 2944 private final static int MSG_INVALIDATE_RECT = 2; 2945 private final static int MSG_DIE = 3; 2946 private final static int MSG_RESIZED = 4; 2947 private final static int MSG_RESIZED_REPORT = 5; 2948 private final static int MSG_WINDOW_FOCUS_CHANGED = 6; 2949 private final static int MSG_DISPATCH_INPUT_EVENT = 7; 2950 private final static int MSG_DISPATCH_APP_VISIBILITY = 8; 2951 private final static int MSG_DISPATCH_GET_NEW_SURFACE = 9; 2952 private final static int MSG_DISPATCH_KEY_FROM_IME = 11; 2953 private final static int MSG_FINISH_INPUT_CONNECTION = 12; 2954 private final static int MSG_CHECK_FOCUS = 13; 2955 private final static int MSG_CLOSE_SYSTEM_DIALOGS = 14; 2956 private final static int MSG_DISPATCH_DRAG_EVENT = 15; 2957 private final static int MSG_DISPATCH_DRAG_LOCATION_EVENT = 16; 2958 private final static int MSG_DISPATCH_SYSTEM_UI_VISIBILITY = 17; 2959 private final static int MSG_UPDATE_CONFIGURATION = 18; 2960 private final static int MSG_PROCESS_INPUT_EVENTS = 19; 2961 private final static int MSG_DISPATCH_SCREEN_STATE = 20; 2962 private final static int MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST = 21; 2963 private final static int MSG_DISPATCH_DONE_ANIMATING = 22; 2964 private final static int MSG_INVALIDATE_WORLD = 23; 2965 private final static int MSG_WINDOW_MOVED = 24; 2966 private final static int MSG_FLUSH_LAYER_UPDATES = 25; 2967 2968 final class ViewRootHandler extends Handler { 2969 @Override 2970 public String getMessageName(Message message) { 2971 switch (message.what) { 2972 case MSG_INVALIDATE: 2973 return "MSG_INVALIDATE"; 2974 case MSG_INVALIDATE_RECT: 2975 return "MSG_INVALIDATE_RECT"; 2976 case MSG_DIE: 2977 return "MSG_DIE"; 2978 case MSG_RESIZED: 2979 return "MSG_RESIZED"; 2980 case MSG_RESIZED_REPORT: 2981 return "MSG_RESIZED_REPORT"; 2982 case MSG_WINDOW_FOCUS_CHANGED: 2983 return "MSG_WINDOW_FOCUS_CHANGED"; 2984 case MSG_DISPATCH_INPUT_EVENT: 2985 return "MSG_DISPATCH_INPUT_EVENT"; 2986 case MSG_DISPATCH_APP_VISIBILITY: 2987 return "MSG_DISPATCH_APP_VISIBILITY"; 2988 case MSG_DISPATCH_GET_NEW_SURFACE: 2989 return "MSG_DISPATCH_GET_NEW_SURFACE"; 2990 case MSG_DISPATCH_KEY_FROM_IME: 2991 return "MSG_DISPATCH_KEY_FROM_IME"; 2992 case MSG_FINISH_INPUT_CONNECTION: 2993 return "MSG_FINISH_INPUT_CONNECTION"; 2994 case MSG_CHECK_FOCUS: 2995 return "MSG_CHECK_FOCUS"; 2996 case MSG_CLOSE_SYSTEM_DIALOGS: 2997 return "MSG_CLOSE_SYSTEM_DIALOGS"; 2998 case MSG_DISPATCH_DRAG_EVENT: 2999 return "MSG_DISPATCH_DRAG_EVENT"; 3000 case MSG_DISPATCH_DRAG_LOCATION_EVENT: 3001 return "MSG_DISPATCH_DRAG_LOCATION_EVENT"; 3002 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: 3003 return "MSG_DISPATCH_SYSTEM_UI_VISIBILITY"; 3004 case MSG_UPDATE_CONFIGURATION: 3005 return "MSG_UPDATE_CONFIGURATION"; 3006 case MSG_PROCESS_INPUT_EVENTS: 3007 return "MSG_PROCESS_INPUT_EVENTS"; 3008 case MSG_DISPATCH_SCREEN_STATE: 3009 return "MSG_DISPATCH_SCREEN_STATE"; 3010 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: 3011 return "MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST"; 3012 case MSG_DISPATCH_DONE_ANIMATING: 3013 return "MSG_DISPATCH_DONE_ANIMATING"; 3014 case MSG_WINDOW_MOVED: 3015 return "MSG_WINDOW_MOVED"; 3016 case MSG_FLUSH_LAYER_UPDATES: 3017 return "MSG_FLUSH_LAYER_UPDATES"; 3018 } 3019 return super.getMessageName(message); 3020 } 3021 3022 @Override 3023 public void handleMessage(Message msg) { 3024 switch (msg.what) { 3025 case MSG_INVALIDATE: 3026 ((View) msg.obj).invalidate(); 3027 break; 3028 case MSG_INVALIDATE_RECT: 3029 final View.AttachInfo.InvalidateInfo info = (View.AttachInfo.InvalidateInfo) msg.obj; 3030 info.target.invalidate(info.left, info.top, info.right, info.bottom); 3031 info.recycle(); 3032 break; 3033 case MSG_PROCESS_INPUT_EVENTS: 3034 mProcessInputEventsScheduled = false; 3035 doProcessInputEvents(); 3036 break; 3037 case MSG_DISPATCH_APP_VISIBILITY: 3038 handleAppVisibility(msg.arg1 != 0); 3039 break; 3040 case MSG_DISPATCH_GET_NEW_SURFACE: 3041 handleGetNewSurface(); 3042 break; 3043 case MSG_RESIZED: { 3044 // Recycled in the fall through... 3045 SomeArgs args = (SomeArgs) msg.obj; 3046 if (mWinFrame.equals(args.arg1) 3047 && mPendingOverscanInsets.equals(args.arg5) 3048 && mPendingContentInsets.equals(args.arg2) 3049 && mPendingVisibleInsets.equals(args.arg3) 3050 && args.arg4 == null) { 3051 break; 3052 } 3053 } // fall through... 3054 case MSG_RESIZED_REPORT: 3055 if (mAdded) { 3056 SomeArgs args = (SomeArgs) msg.obj; 3057 3058 Configuration config = (Configuration) args.arg4; 3059 if (config != null) { 3060 updateConfiguration(config, false); 3061 } 3062 3063 mWinFrame.set((Rect) args.arg1); 3064 mPendingOverscanInsets.set((Rect) args.arg5); 3065 mPendingContentInsets.set((Rect) args.arg2); 3066 mPendingVisibleInsets.set((Rect) args.arg3); 3067 3068 args.recycle(); 3069 3070 if (msg.what == MSG_RESIZED_REPORT) { 3071 mReportNextDraw = true; 3072 } 3073 3074 if (mView != null) { 3075 forceLayout(mView); 3076 } 3077 3078 requestLayout(); 3079 } 3080 break; 3081 case MSG_WINDOW_MOVED: 3082 if (mAdded) { 3083 final int w = mWinFrame.width(); 3084 final int h = mWinFrame.height(); 3085 final int l = msg.arg1; 3086 final int t = msg.arg2; 3087 mWinFrame.left = l; 3088 mWinFrame.right = l + w; 3089 mWinFrame.top = t; 3090 mWinFrame.bottom = t + h; 3091 3092 if (mView != null) { 3093 forceLayout(mView); 3094 } 3095 requestLayout(); 3096 } 3097 break; 3098 case MSG_WINDOW_FOCUS_CHANGED: { 3099 if (mAdded) { 3100 boolean hasWindowFocus = msg.arg1 != 0; 3101 mAttachInfo.mHasWindowFocus = hasWindowFocus; 3102 3103 profileRendering(hasWindowFocus); 3104 3105 if (hasWindowFocus) { 3106 boolean inTouchMode = msg.arg2 != 0; 3107 ensureTouchModeLocally(inTouchMode); 3108 3109 if (mAttachInfo.mHardwareRenderer != null && mSurface.isValid()){ 3110 mFullRedrawNeeded = true; 3111 try { 3112 mAttachInfo.mHardwareRenderer.initializeIfNeeded( 3113 mWidth, mHeight, mHolder.getSurface()); 3114 } catch (OutOfResourcesException e) { 3115 Log.e(TAG, "OutOfResourcesException locking surface", e); 3116 try { 3117 if (!mWindowSession.outOfMemory(mWindow)) { 3118 Slog.w(TAG, "No processes killed for memory; killing self"); 3119 Process.killProcess(Process.myPid()); 3120 } 3121 } catch (RemoteException ex) { 3122 } 3123 // Retry in a bit. 3124 sendMessageDelayed(obtainMessage(msg.what, msg.arg1, msg.arg2), 500); 3125 return; 3126 } 3127 } 3128 } 3129 3130 mLastWasImTarget = WindowManager.LayoutParams 3131 .mayUseInputMethod(mWindowAttributes.flags); 3132 3133 InputMethodManager imm = InputMethodManager.peekInstance(); 3134 if (mView != null) { 3135 if (hasWindowFocus && imm != null && mLastWasImTarget && 3136 !isInLocalFocusMode()) { 3137 imm.startGettingWindowFocus(mView); 3138 } 3139 mAttachInfo.mKeyDispatchState.reset(); 3140 mView.dispatchWindowFocusChanged(hasWindowFocus); 3141 mAttachInfo.mTreeObserver.dispatchOnWindowFocusChange(hasWindowFocus); 3142 } 3143 3144 // Note: must be done after the focus change callbacks, 3145 // so all of the view state is set up correctly. 3146 if (hasWindowFocus) { 3147 if (imm != null && mLastWasImTarget && !isInLocalFocusMode()) { 3148 imm.onWindowFocus(mView, mView.findFocus(), 3149 mWindowAttributes.softInputMode, 3150 !mHasHadWindowFocus, mWindowAttributes.flags); 3151 } 3152 // Clear the forward bit. We can just do this directly, since 3153 // the window manager doesn't care about it. 3154 mWindowAttributes.softInputMode &= 3155 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3156 ((WindowManager.LayoutParams)mView.getLayoutParams()) 3157 .softInputMode &= 3158 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3159 mHasHadWindowFocus = true; 3160 } 3161 3162 setAccessibilityFocus(null, null); 3163 3164 if (mView != null && mAccessibilityManager.isEnabled()) { 3165 if (hasWindowFocus) { 3166 mView.sendAccessibilityEvent( 3167 AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 3168 } 3169 } 3170 } 3171 } break; 3172 case MSG_DIE: 3173 doDie(); 3174 break; 3175 case MSG_DISPATCH_INPUT_EVENT: { 3176 InputEvent event = (InputEvent)msg.obj; 3177 enqueueInputEvent(event, null, 0, true); 3178 } break; 3179 case MSG_DISPATCH_KEY_FROM_IME: { 3180 if (LOCAL_LOGV) Log.v( 3181 TAG, "Dispatching key " 3182 + msg.obj + " from IME to " + mView); 3183 KeyEvent event = (KeyEvent)msg.obj; 3184 if ((event.getFlags()&KeyEvent.FLAG_FROM_SYSTEM) != 0) { 3185 // The IME is trying to say this event is from the 3186 // system! Bad bad bad! 3187 //noinspection UnusedAssignment 3188 event = KeyEvent.changeFlags(event, event.getFlags() & ~KeyEvent.FLAG_FROM_SYSTEM); 3189 } 3190 enqueueInputEvent(event, null, QueuedInputEvent.FLAG_DELIVER_POST_IME, true); 3191 } break; 3192 case MSG_FINISH_INPUT_CONNECTION: { 3193 InputMethodManager imm = InputMethodManager.peekInstance(); 3194 if (imm != null) { 3195 imm.reportFinishInputConnection((InputConnection)msg.obj); 3196 } 3197 } break; 3198 case MSG_CHECK_FOCUS: { 3199 InputMethodManager imm = InputMethodManager.peekInstance(); 3200 if (imm != null) { 3201 imm.checkFocus(); 3202 } 3203 } break; 3204 case MSG_CLOSE_SYSTEM_DIALOGS: { 3205 if (mView != null) { 3206 mView.onCloseSystemDialogs((String)msg.obj); 3207 } 3208 } break; 3209 case MSG_DISPATCH_DRAG_EVENT: 3210 case MSG_DISPATCH_DRAG_LOCATION_EVENT: { 3211 DragEvent event = (DragEvent)msg.obj; 3212 event.mLocalState = mLocalDragState; // only present when this app called startDrag() 3213 handleDragEvent(event); 3214 } break; 3215 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: { 3216 handleDispatchSystemUiVisibilityChanged((SystemUiVisibilityInfo) msg.obj); 3217 } break; 3218 case MSG_UPDATE_CONFIGURATION: { 3219 Configuration config = (Configuration)msg.obj; 3220 if (config.isOtherSeqNewer(mLastConfiguration)) { 3221 config = mLastConfiguration; 3222 } 3223 updateConfiguration(config, false); 3224 } break; 3225 case MSG_DISPATCH_SCREEN_STATE: { 3226 if (mView != null) { 3227 handleScreenStateChange(msg.arg1 == 1); 3228 } 3229 } break; 3230 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: { 3231 setAccessibilityFocus(null, null); 3232 } break; 3233 case MSG_DISPATCH_DONE_ANIMATING: { 3234 handleDispatchDoneAnimating(); 3235 } break; 3236 case MSG_INVALIDATE_WORLD: { 3237 if (mView != null) { 3238 invalidateWorld(mView); 3239 } 3240 } break; 3241 case MSG_FLUSH_LAYER_UPDATES: { 3242 flushHardwareLayerUpdates(); 3243 } break; 3244 } 3245 } 3246 } 3247 3248 final ViewRootHandler mHandler = new ViewRootHandler(); 3249 3250 /** 3251 * Something in the current window tells us we need to change the touch mode. For 3252 * example, we are not in touch mode, and the user touches the screen. 3253 * 3254 * If the touch mode has changed, tell the window manager, and handle it locally. 3255 * 3256 * @param inTouchMode Whether we want to be in touch mode. 3257 * @return True if the touch mode changed and focus changed was changed as a result 3258 */ 3259 boolean ensureTouchMode(boolean inTouchMode) { 3260 if (DBG) Log.d("touchmode", "ensureTouchMode(" + inTouchMode + "), current " 3261 + "touch mode is " + mAttachInfo.mInTouchMode); 3262 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3263 3264 // tell the window manager 3265 try { 3266 if (!isInLocalFocusMode()) { 3267 mWindowSession.setInTouchMode(inTouchMode); 3268 } 3269 } catch (RemoteException e) { 3270 throw new RuntimeException(e); 3271 } 3272 3273 // handle the change 3274 return ensureTouchModeLocally(inTouchMode); 3275 } 3276 3277 /** 3278 * Ensure that the touch mode for this window is set, and if it is changing, 3279 * take the appropriate action. 3280 * @param inTouchMode Whether we want to be in touch mode. 3281 * @return True if the touch mode changed and focus changed was changed as a result 3282 */ 3283 private boolean ensureTouchModeLocally(boolean inTouchMode) { 3284 if (DBG) Log.d("touchmode", "ensureTouchModeLocally(" + inTouchMode + "), current " 3285 + "touch mode is " + mAttachInfo.mInTouchMode); 3286 3287 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3288 3289 mAttachInfo.mInTouchMode = inTouchMode; 3290 mAttachInfo.mTreeObserver.dispatchOnTouchModeChanged(inTouchMode); 3291 3292 return (inTouchMode) ? enterTouchMode() : leaveTouchMode(); 3293 } 3294 3295 private boolean enterTouchMode() { 3296 if (mView != null && mView.hasFocus()) { 3297 // note: not relying on mFocusedView here because this could 3298 // be when the window is first being added, and mFocused isn't 3299 // set yet. 3300 final View focused = mView.findFocus(); 3301 if (focused != null && !focused.isFocusableInTouchMode()) { 3302 final ViewGroup ancestorToTakeFocus = findAncestorToTakeFocusInTouchMode(focused); 3303 if (ancestorToTakeFocus != null) { 3304 // there is an ancestor that wants focus after its 3305 // descendants that is focusable in touch mode.. give it 3306 // focus 3307 return ancestorToTakeFocus.requestFocus(); 3308 } else { 3309 // There's nothing to focus. Clear and propagate through the 3310 // hierarchy, but don't attempt to place new focus. 3311 focused.clearFocusInternal(true, false); 3312 return true; 3313 } 3314 } 3315 } 3316 return false; 3317 } 3318 3319 /** 3320 * Find an ancestor of focused that wants focus after its descendants and is 3321 * focusable in touch mode. 3322 * @param focused The currently focused view. 3323 * @return An appropriate view, or null if no such view exists. 3324 */ 3325 private static ViewGroup findAncestorToTakeFocusInTouchMode(View focused) { 3326 ViewParent parent = focused.getParent(); 3327 while (parent instanceof ViewGroup) { 3328 final ViewGroup vgParent = (ViewGroup) parent; 3329 if (vgParent.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 3330 && vgParent.isFocusableInTouchMode()) { 3331 return vgParent; 3332 } 3333 if (vgParent.isRootNamespace()) { 3334 return null; 3335 } else { 3336 parent = vgParent.getParent(); 3337 } 3338 } 3339 return null; 3340 } 3341 3342 private boolean leaveTouchMode() { 3343 if (mView != null) { 3344 if (mView.hasFocus()) { 3345 View focusedView = mView.findFocus(); 3346 if (!(focusedView instanceof ViewGroup)) { 3347 // some view has focus, let it keep it 3348 return false; 3349 } else if (((ViewGroup) focusedView).getDescendantFocusability() != 3350 ViewGroup.FOCUS_AFTER_DESCENDANTS) { 3351 // some view group has focus, and doesn't prefer its children 3352 // over itself for focus, so let them keep it. 3353 return false; 3354 } 3355 } 3356 3357 // find the best view to give focus to in this brave new non-touch-mode 3358 // world 3359 final View focused = focusSearch(null, View.FOCUS_DOWN); 3360 if (focused != null) { 3361 return focused.requestFocus(View.FOCUS_DOWN); 3362 } 3363 } 3364 return false; 3365 } 3366 3367 /** 3368 * Base class for implementing a stage in the chain of responsibility 3369 * for processing input events. 3370 * <p> 3371 * Events are delivered to the stage by the {@link #deliver} method. The stage 3372 * then has the choice of finishing the event or forwarding it to the next stage. 3373 * </p> 3374 */ 3375 abstract class InputStage { 3376 private final InputStage mNext; 3377 3378 protected static final int FORWARD = 0; 3379 protected static final int FINISH_HANDLED = 1; 3380 protected static final int FINISH_NOT_HANDLED = 2; 3381 3382 /** 3383 * Creates an input stage. 3384 * @param next The next stage to which events should be forwarded. 3385 */ 3386 public InputStage(InputStage next) { 3387 mNext = next; 3388 } 3389 3390 /** 3391 * Delivers an event to be processed. 3392 */ 3393 public final void deliver(QueuedInputEvent q) { 3394 if ((q.mFlags & QueuedInputEvent.FLAG_FINISHED) != 0) { 3395 forward(q); 3396 } else if (shouldDropInputEvent(q)) { 3397 finish(q, false); 3398 } else { 3399 apply(q, onProcess(q)); 3400 } 3401 } 3402 3403 /** 3404 * Marks the the input event as finished then forwards it to the next stage. 3405 */ 3406 protected void finish(QueuedInputEvent q, boolean handled) { 3407 q.mFlags |= QueuedInputEvent.FLAG_FINISHED; 3408 if (handled) { 3409 q.mFlags |= QueuedInputEvent.FLAG_FINISHED_HANDLED; 3410 } 3411 forward(q); 3412 } 3413 3414 /** 3415 * Forwards the event to the next stage. 3416 */ 3417 protected void forward(QueuedInputEvent q) { 3418 onDeliverToNext(q); 3419 } 3420 3421 /** 3422 * Applies a result code from {@link #onProcess} to the specified event. 3423 */ 3424 protected void apply(QueuedInputEvent q, int result) { 3425 if (result == FORWARD) { 3426 forward(q); 3427 } else if (result == FINISH_HANDLED) { 3428 finish(q, true); 3429 } else if (result == FINISH_NOT_HANDLED) { 3430 finish(q, false); 3431 } else { 3432 throw new IllegalArgumentException("Invalid result: " + result); 3433 } 3434 } 3435 3436 /** 3437 * Called when an event is ready to be processed. 3438 * @return A result code indicating how the event was handled. 3439 */ 3440 protected int onProcess(QueuedInputEvent q) { 3441 return FORWARD; 3442 } 3443 3444 /** 3445 * Called when an event is being delivered to the next stage. 3446 */ 3447 protected void onDeliverToNext(QueuedInputEvent q) { 3448 if (mNext != null) { 3449 mNext.deliver(q); 3450 } else { 3451 finishInputEvent(q); 3452 } 3453 } 3454 3455 protected boolean shouldDropInputEvent(QueuedInputEvent q) { 3456 if (mView == null || !mAdded) { 3457 Slog.w(TAG, "Dropping event due to root view being removed: " + q.mEvent); 3458 return true; 3459 } else if (!mAttachInfo.mHasWindowFocus && 3460 !q.mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER) && 3461 !isTerminalInputEvent(q.mEvent)) { 3462 // If this is a focused event and the window doesn't currently have input focus, 3463 // then drop this event. This could be an event that came back from the previous 3464 // stage but the window has lost focus in the meantime. 3465 Slog.w(TAG, "Dropping event due to no window focus: " + q.mEvent); 3466 return true; 3467 } 3468 return false; 3469 } 3470 3471 void dump(String prefix, PrintWriter writer) { 3472 if (mNext != null) { 3473 mNext.dump(prefix, writer); 3474 } 3475 } 3476 } 3477 3478 /** 3479 * Base class for implementing an input pipeline stage that supports 3480 * asynchronous and out-of-order processing of input events. 3481 * <p> 3482 * In addition to what a normal input stage can do, an asynchronous 3483 * input stage may also defer an input event that has been delivered to it 3484 * and finish or forward it later. 3485 * </p> 3486 */ 3487 abstract class AsyncInputStage extends InputStage { 3488 private final String mTraceCounter; 3489 3490 private QueuedInputEvent mQueueHead; 3491 private QueuedInputEvent mQueueTail; 3492 private int mQueueLength; 3493 3494 protected static final int DEFER = 3; 3495 3496 /** 3497 * Creates an asynchronous input stage. 3498 * @param next The next stage to which events should be forwarded. 3499 * @param traceCounter The name of a counter to record the size of 3500 * the queue of pending events. 3501 */ 3502 public AsyncInputStage(InputStage next, String traceCounter) { 3503 super(next); 3504 mTraceCounter = traceCounter; 3505 } 3506 3507 /** 3508 * Marks the event as deferred, which is to say that it will be handled 3509 * asynchronously. The caller is responsible for calling {@link #forward} 3510 * or {@link #finish} later when it is done handling the event. 3511 */ 3512 protected void defer(QueuedInputEvent q) { 3513 q.mFlags |= QueuedInputEvent.FLAG_DEFERRED; 3514 enqueue(q); 3515 } 3516 3517 @Override 3518 protected void forward(QueuedInputEvent q) { 3519 // Clear the deferred flag. 3520 q.mFlags &= ~QueuedInputEvent.FLAG_DEFERRED; 3521 3522 // Fast path if the queue is empty. 3523 QueuedInputEvent curr = mQueueHead; 3524 if (curr == null) { 3525 super.forward(q); 3526 return; 3527 } 3528 3529 // Determine whether the event must be serialized behind any others 3530 // before it can be delivered to the next stage. This is done because 3531 // deferred events might be handled out of order by the stage. 3532 final int deviceId = q.mEvent.getDeviceId(); 3533 QueuedInputEvent prev = null; 3534 boolean blocked = false; 3535 while (curr != null && curr != q) { 3536 if (!blocked && deviceId == curr.mEvent.getDeviceId()) { 3537 blocked = true; 3538 } 3539 prev = curr; 3540 curr = curr.mNext; 3541 } 3542 3543 // If the event is blocked, then leave it in the queue to be delivered later. 3544 // Note that the event might not yet be in the queue if it was not previously 3545 // deferred so we will enqueue it if needed. 3546 if (blocked) { 3547 if (curr == null) { 3548 enqueue(q); 3549 } 3550 return; 3551 } 3552 3553 // The event is not blocked. Deliver it immediately. 3554 if (curr != null) { 3555 curr = curr.mNext; 3556 dequeue(q, prev); 3557 } 3558 super.forward(q); 3559 3560 // Dequeuing this event may have unblocked successors. Deliver them. 3561 while (curr != null) { 3562 if (deviceId == curr.mEvent.getDeviceId()) { 3563 if ((curr.mFlags & QueuedInputEvent.FLAG_DEFERRED) != 0) { 3564 break; 3565 } 3566 QueuedInputEvent next = curr.mNext; 3567 dequeue(curr, prev); 3568 super.forward(curr); 3569 curr = next; 3570 } else { 3571 prev = curr; 3572 curr = curr.mNext; 3573 } 3574 } 3575 } 3576 3577 @Override 3578 protected void apply(QueuedInputEvent q, int result) { 3579 if (result == DEFER) { 3580 defer(q); 3581 } else { 3582 super.apply(q, result); 3583 } 3584 } 3585 3586 private void enqueue(QueuedInputEvent q) { 3587 if (mQueueTail == null) { 3588 mQueueHead = q; 3589 mQueueTail = q; 3590 } else { 3591 mQueueTail.mNext = q; 3592 mQueueTail = q; 3593 } 3594 3595 mQueueLength += 1; 3596 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 3597 } 3598 3599 private void dequeue(QueuedInputEvent q, QueuedInputEvent prev) { 3600 if (prev == null) { 3601 mQueueHead = q.mNext; 3602 } else { 3603 prev.mNext = q.mNext; 3604 } 3605 if (mQueueTail == q) { 3606 mQueueTail = prev; 3607 } 3608 q.mNext = null; 3609 3610 mQueueLength -= 1; 3611 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 3612 } 3613 3614 @Override 3615 void dump(String prefix, PrintWriter writer) { 3616 writer.print(prefix); 3617 writer.print(getClass().getName()); 3618 writer.print(": mQueueLength="); 3619 writer.println(mQueueLength); 3620 3621 super.dump(prefix, writer); 3622 } 3623 } 3624 3625 /** 3626 * Delivers pre-ime input events to a native activity. 3627 * Does not support pointer events. 3628 */ 3629 final class NativePreImeInputStage extends AsyncInputStage 3630 implements InputQueue.FinishedInputEventCallback { 3631 public NativePreImeInputStage(InputStage next, String traceCounter) { 3632 super(next, traceCounter); 3633 } 3634 3635 @Override 3636 protected int onProcess(QueuedInputEvent q) { 3637 if (mInputQueue != null && q.mEvent instanceof KeyEvent) { 3638 mInputQueue.sendInputEvent(q.mEvent, q, true, this); 3639 return DEFER; 3640 } 3641 return FORWARD; 3642 } 3643 3644 @Override 3645 public void onFinishedInputEvent(Object token, boolean handled) { 3646 QueuedInputEvent q = (QueuedInputEvent)token; 3647 if (handled) { 3648 finish(q, true); 3649 return; 3650 } 3651 forward(q); 3652 } 3653 } 3654 3655 /** 3656 * Delivers pre-ime input events to the view hierarchy. 3657 * Does not support pointer events. 3658 */ 3659 final class ViewPreImeInputStage extends InputStage { 3660 public ViewPreImeInputStage(InputStage next) { 3661 super(next); 3662 } 3663 3664 @Override 3665 protected int onProcess(QueuedInputEvent q) { 3666 if (q.mEvent instanceof KeyEvent) { 3667 return processKeyEvent(q); 3668 } 3669 return FORWARD; 3670 } 3671 3672 private int processKeyEvent(QueuedInputEvent q) { 3673 final KeyEvent event = (KeyEvent)q.mEvent; 3674 if (mView.dispatchKeyEventPreIme(event)) { 3675 return FINISH_HANDLED; 3676 } 3677 return FORWARD; 3678 } 3679 } 3680 3681 /** 3682 * Delivers input events to the ime. 3683 * Does not support pointer events. 3684 */ 3685 final class ImeInputStage extends AsyncInputStage 3686 implements InputMethodManager.FinishedInputEventCallback { 3687 public ImeInputStage(InputStage next, String traceCounter) { 3688 super(next, traceCounter); 3689 } 3690 3691 @Override 3692 protected int onProcess(QueuedInputEvent q) { 3693 if (mLastWasImTarget && !isInLocalFocusMode()) { 3694 InputMethodManager imm = InputMethodManager.peekInstance(); 3695 if (imm != null) { 3696 final InputEvent event = q.mEvent; 3697 if (DEBUG_IMF) Log.v(TAG, "Sending input event to IME: " + event); 3698 int result = imm.dispatchInputEvent(event, q, this, mHandler); 3699 if (result == InputMethodManager.DISPATCH_HANDLED) { 3700 return FINISH_HANDLED; 3701 } else if (result == InputMethodManager.DISPATCH_NOT_HANDLED) { 3702 return FINISH_NOT_HANDLED; 3703 } else { 3704 return DEFER; // callback will be invoked later 3705 } 3706 } 3707 } 3708 return FORWARD; 3709 } 3710 3711 @Override 3712 public void onFinishedInputEvent(Object token, boolean handled) { 3713 QueuedInputEvent q = (QueuedInputEvent)token; 3714 if (handled) { 3715 finish(q, true); 3716 return; 3717 } 3718 forward(q); 3719 } 3720 } 3721 3722 /** 3723 * Performs early processing of post-ime input events. 3724 */ 3725 final class EarlyPostImeInputStage extends InputStage { 3726 public EarlyPostImeInputStage(InputStage next) { 3727 super(next); 3728 } 3729 3730 @Override 3731 protected int onProcess(QueuedInputEvent q) { 3732 if (q.mEvent instanceof KeyEvent) { 3733 return processKeyEvent(q); 3734 } else { 3735 final int source = q.mEvent.getSource(); 3736 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 3737 return processPointerEvent(q); 3738 } 3739 } 3740 return FORWARD; 3741 } 3742 3743 private int processKeyEvent(QueuedInputEvent q) { 3744 final KeyEvent event = (KeyEvent)q.mEvent; 3745 3746 // If the key's purpose is to exit touch mode then we consume it 3747 // and consider it handled. 3748 if (checkForLeavingTouchModeAndConsume(event)) { 3749 return FINISH_HANDLED; 3750 } 3751 3752 // Make sure the fallback event policy sees all keys that will be 3753 // delivered to the view hierarchy. 3754 mFallbackEventHandler.preDispatchKeyEvent(event); 3755 return FORWARD; 3756 } 3757 3758 private int processPointerEvent(QueuedInputEvent q) { 3759 final MotionEvent event = (MotionEvent)q.mEvent; 3760 3761 // Translate the pointer event for compatibility, if needed. 3762 if (mTranslator != null) { 3763 mTranslator.translateEventInScreenToAppWindow(event); 3764 } 3765 3766 // Enter touch mode on down or scroll. 3767 final int action = event.getAction(); 3768 if (action == MotionEvent.ACTION_DOWN || action == MotionEvent.ACTION_SCROLL) { 3769 ensureTouchMode(true); 3770 } 3771 3772 // Offset the scroll position. 3773 if (mCurScrollY != 0) { 3774 event.offsetLocation(0, mCurScrollY); 3775 } 3776 3777 // Remember the touch position for possible drag-initiation. 3778 if (event.isTouchEvent()) { 3779 mLastTouchPoint.x = event.getRawX(); 3780 mLastTouchPoint.y = event.getRawY(); 3781 } 3782 return FORWARD; 3783 } 3784 } 3785 3786 /** 3787 * Delivers post-ime input events to a native activity. 3788 */ 3789 final class NativePostImeInputStage extends AsyncInputStage 3790 implements InputQueue.FinishedInputEventCallback { 3791 public NativePostImeInputStage(InputStage next, String traceCounter) { 3792 super(next, traceCounter); 3793 } 3794 3795 @Override 3796 protected int onProcess(QueuedInputEvent q) { 3797 if (mInputQueue != null) { 3798 mInputQueue.sendInputEvent(q.mEvent, q, false, this); 3799 return DEFER; 3800 } 3801 return FORWARD; 3802 } 3803 3804 @Override 3805 public void onFinishedInputEvent(Object token, boolean handled) { 3806 QueuedInputEvent q = (QueuedInputEvent)token; 3807 if (handled) { 3808 finish(q, true); 3809 return; 3810 } 3811 forward(q); 3812 } 3813 } 3814 3815 /** 3816 * Delivers post-ime input events to the view hierarchy. 3817 */ 3818 final class ViewPostImeInputStage extends InputStage { 3819 public ViewPostImeInputStage(InputStage next) { 3820 super(next); 3821 } 3822 3823 @Override 3824 protected int onProcess(QueuedInputEvent q) { 3825 if (q.mEvent instanceof KeyEvent) { 3826 return processKeyEvent(q); 3827 } else { 3828 // If delivering a new non-key event, make sure the window is 3829 // now allowed to start updating. 3830 handleDispatchDoneAnimating(); 3831 final int source = q.mEvent.getSource(); 3832 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 3833 return processPointerEvent(q); 3834 } else if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 3835 return processTrackballEvent(q); 3836 } else { 3837 return processGenericMotionEvent(q); 3838 } 3839 } 3840 } 3841 3842 private int processKeyEvent(QueuedInputEvent q) { 3843 final KeyEvent event = (KeyEvent)q.mEvent; 3844 3845 if (event.getAction() != KeyEvent.ACTION_UP) { 3846 // If delivering a new key event, make sure the window is 3847 // now allowed to start updating. 3848 handleDispatchDoneAnimating(); 3849 } 3850 3851 // Deliver the key to the view hierarchy. 3852 if (mView.dispatchKeyEvent(event)) { 3853 return FINISH_HANDLED; 3854 } 3855 3856 if (shouldDropInputEvent(q)) { 3857 return FINISH_NOT_HANDLED; 3858 } 3859 3860 // If the Control modifier is held, try to interpret the key as a shortcut. 3861 if (event.getAction() == KeyEvent.ACTION_DOWN 3862 && event.isCtrlPressed() 3863 && event.getRepeatCount() == 0 3864 && !KeyEvent.isModifierKey(event.getKeyCode())) { 3865 if (mView.dispatchKeyShortcutEvent(event)) { 3866 return FINISH_HANDLED; 3867 } 3868 if (shouldDropInputEvent(q)) { 3869 return FINISH_NOT_HANDLED; 3870 } 3871 } 3872 3873 // Apply the fallback event policy. 3874 if (mFallbackEventHandler.dispatchKeyEvent(event)) { 3875 return FINISH_HANDLED; 3876 } 3877 if (shouldDropInputEvent(q)) { 3878 return FINISH_NOT_HANDLED; 3879 } 3880 3881 // Handle automatic focus changes. 3882 if (event.getAction() == KeyEvent.ACTION_DOWN) { 3883 int direction = 0; 3884 switch (event.getKeyCode()) { 3885 case KeyEvent.KEYCODE_DPAD_LEFT: 3886 if (event.hasNoModifiers()) { 3887 direction = View.FOCUS_LEFT; 3888 } 3889 break; 3890 case KeyEvent.KEYCODE_DPAD_RIGHT: 3891 if (event.hasNoModifiers()) { 3892 direction = View.FOCUS_RIGHT; 3893 } 3894 break; 3895 case KeyEvent.KEYCODE_DPAD_UP: 3896 if (event.hasNoModifiers()) { 3897 direction = View.FOCUS_UP; 3898 } 3899 break; 3900 case KeyEvent.KEYCODE_DPAD_DOWN: 3901 if (event.hasNoModifiers()) { 3902 direction = View.FOCUS_DOWN; 3903 } 3904 break; 3905 case KeyEvent.KEYCODE_TAB: 3906 if (event.hasNoModifiers()) { 3907 direction = View.FOCUS_FORWARD; 3908 } else if (event.hasModifiers(KeyEvent.META_SHIFT_ON)) { 3909 direction = View.FOCUS_BACKWARD; 3910 } 3911 break; 3912 } 3913 if (direction != 0) { 3914 View focused = mView.findFocus(); 3915 if (focused != null) { 3916 View v = focused.focusSearch(direction); 3917 if (v != null && v != focused) { 3918 // do the math the get the interesting rect 3919 // of previous focused into the coord system of 3920 // newly focused view 3921 focused.getFocusedRect(mTempRect); 3922 if (mView instanceof ViewGroup) { 3923 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 3924 focused, mTempRect); 3925 ((ViewGroup) mView).offsetRectIntoDescendantCoords( 3926 v, mTempRect); 3927 } 3928 if (v.requestFocus(direction, mTempRect)) { 3929 playSoundEffect(SoundEffectConstants 3930 .getContantForFocusDirection(direction)); 3931 return FINISH_HANDLED; 3932 } 3933 } 3934 3935 // Give the focused view a last chance to handle the dpad key. 3936 if (mView.dispatchUnhandledMove(focused, direction)) { 3937 return FINISH_HANDLED; 3938 } 3939 } else { 3940 // find the best view to give focus to in this non-touch-mode with no-focus 3941 View v = focusSearch(null, direction); 3942 if (v != null && v.requestFocus(direction)) { 3943 return FINISH_HANDLED; 3944 } 3945 } 3946 } 3947 } 3948 return FORWARD; 3949 } 3950 3951 private int processPointerEvent(QueuedInputEvent q) { 3952 final MotionEvent event = (MotionEvent)q.mEvent; 3953 3954 if (mView.dispatchPointerEvent(event)) { 3955 return FINISH_HANDLED; 3956 } 3957 return FORWARD; 3958 } 3959 3960 private int processTrackballEvent(QueuedInputEvent q) { 3961 final MotionEvent event = (MotionEvent)q.mEvent; 3962 3963 if (mView.dispatchTrackballEvent(event)) { 3964 return FINISH_HANDLED; 3965 } 3966 return FORWARD; 3967 } 3968 3969 private int processGenericMotionEvent(QueuedInputEvent q) { 3970 final MotionEvent event = (MotionEvent)q.mEvent; 3971 3972 // Deliver the event to the view. 3973 if (mView.dispatchGenericMotionEvent(event)) { 3974 return FINISH_HANDLED; 3975 } 3976 return FORWARD; 3977 } 3978 } 3979 3980 /** 3981 * Performs synthesis of new input events from unhandled input events. 3982 */ 3983 final class SyntheticInputStage extends InputStage { 3984 private final SyntheticTrackballHandler mTrackball = new SyntheticTrackballHandler(); 3985 private final SyntheticJoystickHandler mJoystick = new SyntheticJoystickHandler(); 3986 private final SyntheticTouchNavigationHandler mTouchNavigation = 3987 new SyntheticTouchNavigationHandler(); 3988 private final SyntheticKeyHandler mKeys = new SyntheticKeyHandler(); 3989 3990 public SyntheticInputStage() { 3991 super(null); 3992 } 3993 3994 @Override 3995 protected int onProcess(QueuedInputEvent q) { 3996 q.mFlags |= QueuedInputEvent.FLAG_RESYNTHESIZED; 3997 if (q.mEvent instanceof MotionEvent) { 3998 final MotionEvent event = (MotionEvent)q.mEvent; 3999 final int source = event.getSource(); 4000 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 4001 mTrackball.process(event); 4002 return FINISH_HANDLED; 4003 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 4004 mJoystick.process(event); 4005 return FINISH_HANDLED; 4006 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 4007 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 4008 mTouchNavigation.process(event); 4009 return FINISH_HANDLED; 4010 } 4011 } else if (q.mEvent instanceof KeyEvent) { 4012 if (mKeys.process((KeyEvent) q.mEvent)) { 4013 return FINISH_HANDLED; 4014 } 4015 } 4016 4017 return FORWARD; 4018 } 4019 4020 @Override 4021 protected void onDeliverToNext(QueuedInputEvent q) { 4022 if ((q.mFlags & QueuedInputEvent.FLAG_RESYNTHESIZED) == 0) { 4023 // Cancel related synthetic events if any prior stage has handled the event. 4024 if (q.mEvent instanceof MotionEvent) { 4025 final MotionEvent event = (MotionEvent)q.mEvent; 4026 final int source = event.getSource(); 4027 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 4028 mTrackball.cancel(event); 4029 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 4030 mJoystick.cancel(event); 4031 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 4032 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 4033 mTouchNavigation.cancel(event); 4034 } 4035 } 4036 } 4037 super.onDeliverToNext(q); 4038 } 4039 } 4040 4041 /** 4042 * Creates dpad events from unhandled trackball movements. 4043 */ 4044 final class SyntheticTrackballHandler { 4045 private final TrackballAxis mX = new TrackballAxis(); 4046 private final TrackballAxis mY = new TrackballAxis(); 4047 private long mLastTime; 4048 4049 public void process(MotionEvent event) { 4050 // Translate the trackball event into DPAD keys and try to deliver those. 4051 long curTime = SystemClock.uptimeMillis(); 4052 if ((mLastTime + MAX_TRACKBALL_DELAY) < curTime) { 4053 // It has been too long since the last movement, 4054 // so restart at the beginning. 4055 mX.reset(0); 4056 mY.reset(0); 4057 mLastTime = curTime; 4058 } 4059 4060 final int action = event.getAction(); 4061 final int metaState = event.getMetaState(); 4062 switch (action) { 4063 case MotionEvent.ACTION_DOWN: 4064 mX.reset(2); 4065 mY.reset(2); 4066 enqueueInputEvent(new KeyEvent(curTime, curTime, 4067 KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 4068 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4069 InputDevice.SOURCE_KEYBOARD)); 4070 break; 4071 case MotionEvent.ACTION_UP: 4072 mX.reset(2); 4073 mY.reset(2); 4074 enqueueInputEvent(new KeyEvent(curTime, curTime, 4075 KeyEvent.ACTION_UP, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 4076 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4077 InputDevice.SOURCE_KEYBOARD)); 4078 break; 4079 } 4080 4081 if (DEBUG_TRACKBALL) Log.v(TAG, "TB X=" + mX.position + " step=" 4082 + mX.step + " dir=" + mX.dir + " acc=" + mX.acceleration 4083 + " move=" + event.getX() 4084 + " / Y=" + mY.position + " step=" 4085 + mY.step + " dir=" + mY.dir + " acc=" + mY.acceleration 4086 + " move=" + event.getY()); 4087 final float xOff = mX.collect(event.getX(), event.getEventTime(), "X"); 4088 final float yOff = mY.collect(event.getY(), event.getEventTime(), "Y"); 4089 4090 // Generate DPAD events based on the trackball movement. 4091 // We pick the axis that has moved the most as the direction of 4092 // the DPAD. When we generate DPAD events for one axis, then the 4093 // other axis is reset -- we don't want to perform DPAD jumps due 4094 // to slight movements in the trackball when making major movements 4095 // along the other axis. 4096 int keycode = 0; 4097 int movement = 0; 4098 float accel = 1; 4099 if (xOff > yOff) { 4100 movement = mX.generate(); 4101 if (movement != 0) { 4102 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_RIGHT 4103 : KeyEvent.KEYCODE_DPAD_LEFT; 4104 accel = mX.acceleration; 4105 mY.reset(2); 4106 } 4107 } else if (yOff > 0) { 4108 movement = mY.generate(); 4109 if (movement != 0) { 4110 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_DOWN 4111 : KeyEvent.KEYCODE_DPAD_UP; 4112 accel = mY.acceleration; 4113 mX.reset(2); 4114 } 4115 } 4116 4117 if (keycode != 0) { 4118 if (movement < 0) movement = -movement; 4119 int accelMovement = (int)(movement * accel); 4120 if (DEBUG_TRACKBALL) Log.v(TAG, "Move: movement=" + movement 4121 + " accelMovement=" + accelMovement 4122 + " accel=" + accel); 4123 if (accelMovement > movement) { 4124 if (DEBUG_TRACKBALL) Log.v(TAG, "Delivering fake DPAD: " 4125 + keycode); 4126 movement--; 4127 int repeatCount = accelMovement - movement; 4128 enqueueInputEvent(new KeyEvent(curTime, curTime, 4129 KeyEvent.ACTION_MULTIPLE, keycode, repeatCount, metaState, 4130 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4131 InputDevice.SOURCE_KEYBOARD)); 4132 } 4133 while (movement > 0) { 4134 if (DEBUG_TRACKBALL) Log.v(TAG, "Delivering fake DPAD: " 4135 + keycode); 4136 movement--; 4137 curTime = SystemClock.uptimeMillis(); 4138 enqueueInputEvent(new KeyEvent(curTime, curTime, 4139 KeyEvent.ACTION_DOWN, keycode, 0, metaState, 4140 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4141 InputDevice.SOURCE_KEYBOARD)); 4142 enqueueInputEvent(new KeyEvent(curTime, curTime, 4143 KeyEvent.ACTION_UP, keycode, 0, metaState, 4144 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4145 InputDevice.SOURCE_KEYBOARD)); 4146 } 4147 mLastTime = curTime; 4148 } 4149 } 4150 4151 public void cancel(MotionEvent event) { 4152 mLastTime = Integer.MIN_VALUE; 4153 4154 // If we reach this, we consumed a trackball event. 4155 // Because we will not translate the trackball event into a key event, 4156 // touch mode will not exit, so we exit touch mode here. 4157 if (mView != null && mAdded) { 4158 ensureTouchMode(false); 4159 } 4160 } 4161 } 4162 4163 /** 4164 * Maintains state information for a single trackball axis, generating 4165 * discrete (DPAD) movements based on raw trackball motion. 4166 */ 4167 static final class TrackballAxis { 4168 /** 4169 * The maximum amount of acceleration we will apply. 4170 */ 4171 static final float MAX_ACCELERATION = 20; 4172 4173 /** 4174 * The maximum amount of time (in milliseconds) between events in order 4175 * for us to consider the user to be doing fast trackball movements, 4176 * and thus apply an acceleration. 4177 */ 4178 static final long FAST_MOVE_TIME = 150; 4179 4180 /** 4181 * Scaling factor to the time (in milliseconds) between events to how 4182 * much to multiple/divide the current acceleration. When movement 4183 * is < FAST_MOVE_TIME this multiplies the acceleration; when > 4184 * FAST_MOVE_TIME it divides it. 4185 */ 4186 static final float ACCEL_MOVE_SCALING_FACTOR = (1.0f/40); 4187 4188 static final float FIRST_MOVEMENT_THRESHOLD = 0.5f; 4189 static final float SECOND_CUMULATIVE_MOVEMENT_THRESHOLD = 2.0f; 4190 static final float SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD = 1.0f; 4191 4192 float position; 4193 float acceleration = 1; 4194 long lastMoveTime = 0; 4195 int step; 4196 int dir; 4197 int nonAccelMovement; 4198 4199 void reset(int _step) { 4200 position = 0; 4201 acceleration = 1; 4202 lastMoveTime = 0; 4203 step = _step; 4204 dir = 0; 4205 } 4206 4207 /** 4208 * Add trackball movement into the state. If the direction of movement 4209 * has been reversed, the state is reset before adding the 4210 * movement (so that you don't have to compensate for any previously 4211 * collected movement before see the result of the movement in the 4212 * new direction). 4213 * 4214 * @return Returns the absolute value of the amount of movement 4215 * collected so far. 4216 */ 4217 float collect(float off, long time, String axis) { 4218 long normTime; 4219 if (off > 0) { 4220 normTime = (long)(off * FAST_MOVE_TIME); 4221 if (dir < 0) { 4222 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to positive!"); 4223 position = 0; 4224 step = 0; 4225 acceleration = 1; 4226 lastMoveTime = 0; 4227 } 4228 dir = 1; 4229 } else if (off < 0) { 4230 normTime = (long)((-off) * FAST_MOVE_TIME); 4231 if (dir > 0) { 4232 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to negative!"); 4233 position = 0; 4234 step = 0; 4235 acceleration = 1; 4236 lastMoveTime = 0; 4237 } 4238 dir = -1; 4239 } else { 4240 normTime = 0; 4241 } 4242 4243 // The number of milliseconds between each movement that is 4244 // considered "normal" and will not result in any acceleration 4245 // or deceleration, scaled by the offset we have here. 4246 if (normTime > 0) { 4247 long delta = time - lastMoveTime; 4248 lastMoveTime = time; 4249 float acc = acceleration; 4250 if (delta < normTime) { 4251 // The user is scrolling rapidly, so increase acceleration. 4252 float scale = (normTime-delta) * ACCEL_MOVE_SCALING_FACTOR; 4253 if (scale > 1) acc *= scale; 4254 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " accelerate: off=" 4255 + off + " normTime=" + normTime + " delta=" + delta 4256 + " scale=" + scale + " acc=" + acc); 4257 acceleration = acc < MAX_ACCELERATION ? acc : MAX_ACCELERATION; 4258 } else { 4259 // The user is scrolling slowly, so decrease acceleration. 4260 float scale = (delta-normTime) * ACCEL_MOVE_SCALING_FACTOR; 4261 if (scale > 1) acc /= scale; 4262 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " deccelerate: off=" 4263 + off + " normTime=" + normTime + " delta=" + delta 4264 + " scale=" + scale + " acc=" + acc); 4265 acceleration = acc > 1 ? acc : 1; 4266 } 4267 } 4268 position += off; 4269 return Math.abs(position); 4270 } 4271 4272 /** 4273 * Generate the number of discrete movement events appropriate for 4274 * the currently collected trackball movement. 4275 * 4276 * @return Returns the number of discrete movements, either positive 4277 * or negative, or 0 if there is not enough trackball movement yet 4278 * for a discrete movement. 4279 */ 4280 int generate() { 4281 int movement = 0; 4282 nonAccelMovement = 0; 4283 do { 4284 final int dir = position >= 0 ? 1 : -1; 4285 switch (step) { 4286 // If we are going to execute the first step, then we want 4287 // to do this as soon as possible instead of waiting for 4288 // a full movement, in order to make things look responsive. 4289 case 0: 4290 if (Math.abs(position) < FIRST_MOVEMENT_THRESHOLD) { 4291 return movement; 4292 } 4293 movement += dir; 4294 nonAccelMovement += dir; 4295 step = 1; 4296 break; 4297 // If we have generated the first movement, then we need 4298 // to wait for the second complete trackball motion before 4299 // generating the second discrete movement. 4300 case 1: 4301 if (Math.abs(position) < SECOND_CUMULATIVE_MOVEMENT_THRESHOLD) { 4302 return movement; 4303 } 4304 movement += dir; 4305 nonAccelMovement += dir; 4306 position -= SECOND_CUMULATIVE_MOVEMENT_THRESHOLD * dir; 4307 step = 2; 4308 break; 4309 // After the first two, we generate discrete movements 4310 // consistently with the trackball, applying an acceleration 4311 // if the trackball is moving quickly. This is a simple 4312 // acceleration on top of what we already compute based 4313 // on how quickly the wheel is being turned, to apply 4314 // a longer increasing acceleration to continuous movement 4315 // in one direction. 4316 default: 4317 if (Math.abs(position) < SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD) { 4318 return movement; 4319 } 4320 movement += dir; 4321 position -= dir * SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD; 4322 float acc = acceleration; 4323 acc *= 1.1f; 4324 acceleration = acc < MAX_ACCELERATION ? acc : acceleration; 4325 break; 4326 } 4327 } while (true); 4328 } 4329 } 4330 4331 /** 4332 * Creates dpad events from unhandled joystick movements. 4333 */ 4334 final class SyntheticJoystickHandler extends Handler { 4335 private final static int MSG_ENQUEUE_X_AXIS_KEY_REPEAT = 1; 4336 private final static int MSG_ENQUEUE_Y_AXIS_KEY_REPEAT = 2; 4337 4338 private int mLastXDirection; 4339 private int mLastYDirection; 4340 private int mLastXKeyCode; 4341 private int mLastYKeyCode; 4342 4343 public SyntheticJoystickHandler() { 4344 super(true); 4345 } 4346 4347 @Override 4348 public void handleMessage(Message msg) { 4349 switch (msg.what) { 4350 case MSG_ENQUEUE_X_AXIS_KEY_REPEAT: 4351 case MSG_ENQUEUE_Y_AXIS_KEY_REPEAT: { 4352 KeyEvent oldEvent = (KeyEvent)msg.obj; 4353 KeyEvent e = KeyEvent.changeTimeRepeat(oldEvent, 4354 SystemClock.uptimeMillis(), 4355 oldEvent.getRepeatCount() + 1); 4356 if (mAttachInfo.mHasWindowFocus) { 4357 enqueueInputEvent(e); 4358 Message m = obtainMessage(msg.what, e); 4359 m.setAsynchronous(true); 4360 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatDelay()); 4361 } 4362 } break; 4363 } 4364 } 4365 4366 public void process(MotionEvent event) { 4367 update(event, true); 4368 } 4369 4370 public void cancel(MotionEvent event) { 4371 update(event, false); 4372 } 4373 4374 private void update(MotionEvent event, boolean synthesizeNewKeys) { 4375 final long time = event.getEventTime(); 4376 final int metaState = event.getMetaState(); 4377 final int deviceId = event.getDeviceId(); 4378 final int source = event.getSource(); 4379 4380 int xDirection = joystickAxisValueToDirection( 4381 event.getAxisValue(MotionEvent.AXIS_HAT_X)); 4382 if (xDirection == 0) { 4383 xDirection = joystickAxisValueToDirection(event.getX()); 4384 } 4385 4386 int yDirection = joystickAxisValueToDirection( 4387 event.getAxisValue(MotionEvent.AXIS_HAT_Y)); 4388 if (yDirection == 0) { 4389 yDirection = joystickAxisValueToDirection(event.getY()); 4390 } 4391 4392 if (xDirection != mLastXDirection) { 4393 if (mLastXKeyCode != 0) { 4394 removeMessages(MSG_ENQUEUE_X_AXIS_KEY_REPEAT); 4395 enqueueInputEvent(new KeyEvent(time, time, 4396 KeyEvent.ACTION_UP, mLastXKeyCode, 0, metaState, 4397 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4398 mLastXKeyCode = 0; 4399 } 4400 4401 mLastXDirection = xDirection; 4402 4403 if (xDirection != 0 && synthesizeNewKeys) { 4404 mLastXKeyCode = xDirection > 0 4405 ? KeyEvent.KEYCODE_DPAD_RIGHT : KeyEvent.KEYCODE_DPAD_LEFT; 4406 final KeyEvent e = new KeyEvent(time, time, 4407 KeyEvent.ACTION_DOWN, mLastXKeyCode, 0, metaState, 4408 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4409 enqueueInputEvent(e); 4410 Message m = obtainMessage(MSG_ENQUEUE_X_AXIS_KEY_REPEAT, e); 4411 m.setAsynchronous(true); 4412 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4413 } 4414 } 4415 4416 if (yDirection != mLastYDirection) { 4417 if (mLastYKeyCode != 0) { 4418 removeMessages(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT); 4419 enqueueInputEvent(new KeyEvent(time, time, 4420 KeyEvent.ACTION_UP, mLastYKeyCode, 0, metaState, 4421 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4422 mLastYKeyCode = 0; 4423 } 4424 4425 mLastYDirection = yDirection; 4426 4427 if (yDirection != 0 && synthesizeNewKeys) { 4428 mLastYKeyCode = yDirection > 0 4429 ? KeyEvent.KEYCODE_DPAD_DOWN : KeyEvent.KEYCODE_DPAD_UP; 4430 final KeyEvent e = new KeyEvent(time, time, 4431 KeyEvent.ACTION_DOWN, mLastYKeyCode, 0, metaState, 4432 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4433 enqueueInputEvent(e); 4434 Message m = obtainMessage(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT, e); 4435 m.setAsynchronous(true); 4436 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4437 } 4438 } 4439 } 4440 4441 private int joystickAxisValueToDirection(float value) { 4442 if (value >= 0.5f) { 4443 return 1; 4444 } else if (value <= -0.5f) { 4445 return -1; 4446 } else { 4447 return 0; 4448 } 4449 } 4450 } 4451 4452 /** 4453 * Creates dpad events from unhandled touch navigation movements. 4454 */ 4455 final class SyntheticTouchNavigationHandler extends Handler { 4456 private static final String LOCAL_TAG = "SyntheticTouchNavigationHandler"; 4457 private static final boolean LOCAL_DEBUG = false; 4458 4459 // Assumed nominal width and height in millimeters of a touch navigation pad, 4460 // if no resolution information is available from the input system. 4461 private static final float DEFAULT_WIDTH_MILLIMETERS = 48; 4462 private static final float DEFAULT_HEIGHT_MILLIMETERS = 48; 4463 4464 /* TODO: These constants should eventually be moved to ViewConfiguration. */ 4465 4466 // The nominal distance traveled to move by one unit. 4467 private static final int TICK_DISTANCE_MILLIMETERS = 12; 4468 4469 // Minimum and maximum fling velocity in ticks per second. 4470 // The minimum velocity should be set such that we perform enough ticks per 4471 // second that the fling appears to be fluid. For example, if we set the minimum 4472 // to 2 ticks per second, then there may be up to half a second delay between the next 4473 // to last and last ticks which is noticeably discrete and jerky. This value should 4474 // probably not be set to anything less than about 4. 4475 // If fling accuracy is a problem then consider tuning the tick distance instead. 4476 private static final float MIN_FLING_VELOCITY_TICKS_PER_SECOND = 6f; 4477 private static final float MAX_FLING_VELOCITY_TICKS_PER_SECOND = 20f; 4478 4479 // Fling velocity decay factor applied after each new key is emitted. 4480 // This parameter controls the deceleration and overall duration of the fling. 4481 // The fling stops automatically when its velocity drops below the minimum 4482 // fling velocity defined above. 4483 private static final float FLING_TICK_DECAY = 0.8f; 4484 4485 /* The input device that we are tracking. */ 4486 4487 private int mCurrentDeviceId = -1; 4488 private int mCurrentSource; 4489 private boolean mCurrentDeviceSupported; 4490 4491 /* Configuration for the current input device. */ 4492 4493 // The scaled tick distance. A movement of this amount should generally translate 4494 // into a single dpad event in a given direction. 4495 private float mConfigTickDistance; 4496 4497 // The minimum and maximum scaled fling velocity. 4498 private float mConfigMinFlingVelocity; 4499 private float mConfigMaxFlingVelocity; 4500 4501 /* Tracking state. */ 4502 4503 // The velocity tracker for detecting flings. 4504 private VelocityTracker mVelocityTracker; 4505 4506 // The active pointer id, or -1 if none. 4507 private int mActivePointerId = -1; 4508 4509 // Time and location where tracking started. 4510 private long mStartTime; 4511 private float mStartX; 4512 private float mStartY; 4513 4514 // Most recently observed position. 4515 private float mLastX; 4516 private float mLastY; 4517 4518 // Accumulated movement delta since the last direction key was sent. 4519 private float mAccumulatedX; 4520 private float mAccumulatedY; 4521 4522 // Set to true if any movement was delivered to the app. 4523 // Implies that tap slop was exceeded. 4524 private boolean mConsumedMovement; 4525 4526 // The most recently sent key down event. 4527 // The keycode remains set until the direction changes or a fling ends 4528 // so that repeated key events may be generated as required. 4529 private long mPendingKeyDownTime; 4530 private int mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 4531 private int mPendingKeyRepeatCount; 4532 private int mPendingKeyMetaState; 4533 4534 // The current fling velocity while a fling is in progress. 4535 private boolean mFlinging; 4536 private float mFlingVelocity; 4537 4538 // The last time a confirm key was pressed on the touch nav device 4539 private long mLastConfirmKeyTime = Long.MAX_VALUE; 4540 4541 public SyntheticTouchNavigationHandler() { 4542 super(true); 4543 } 4544 4545 public void process(MotionEvent event) { 4546 // Update the current device information. 4547 final long time = event.getEventTime(); 4548 final int deviceId = event.getDeviceId(); 4549 final int source = event.getSource(); 4550 if (mCurrentDeviceId != deviceId || mCurrentSource != source) { 4551 finishKeys(time); 4552 finishTracking(time); 4553 mCurrentDeviceId = deviceId; 4554 mCurrentSource = source; 4555 mCurrentDeviceSupported = false; 4556 InputDevice device = event.getDevice(); 4557 if (device != null) { 4558 // In order to support an input device, we must know certain 4559 // characteristics about it, such as its size and resolution. 4560 InputDevice.MotionRange xRange = device.getMotionRange(MotionEvent.AXIS_X); 4561 InputDevice.MotionRange yRange = device.getMotionRange(MotionEvent.AXIS_Y); 4562 if (xRange != null && yRange != null) { 4563 mCurrentDeviceSupported = true; 4564 4565 // Infer the resolution if it not actually known. 4566 float xRes = xRange.getResolution(); 4567 if (xRes <= 0) { 4568 xRes = xRange.getRange() / DEFAULT_WIDTH_MILLIMETERS; 4569 } 4570 float yRes = yRange.getResolution(); 4571 if (yRes <= 0) { 4572 yRes = yRange.getRange() / DEFAULT_HEIGHT_MILLIMETERS; 4573 } 4574 float nominalRes = (xRes + yRes) * 0.5f; 4575 4576 // Precompute all of the configuration thresholds we will need. 4577 mConfigTickDistance = TICK_DISTANCE_MILLIMETERS * nominalRes; 4578 mConfigMinFlingVelocity = 4579 MIN_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 4580 mConfigMaxFlingVelocity = 4581 MAX_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 4582 4583 if (LOCAL_DEBUG) { 4584 Log.d(LOCAL_TAG, "Configured device " + mCurrentDeviceId 4585 + " (" + Integer.toHexString(mCurrentSource) + "): " 4586 + ", mConfigTickDistance=" + mConfigTickDistance 4587 + ", mConfigMinFlingVelocity=" + mConfigMinFlingVelocity 4588 + ", mConfigMaxFlingVelocity=" + mConfigMaxFlingVelocity); 4589 } 4590 } 4591 } 4592 } 4593 if (!mCurrentDeviceSupported) { 4594 return; 4595 } 4596 4597 // Handle the event. 4598 final int action = event.getActionMasked(); 4599 switch (action) { 4600 case MotionEvent.ACTION_DOWN: { 4601 boolean caughtFling = mFlinging; 4602 finishKeys(time); 4603 finishTracking(time); 4604 mActivePointerId = event.getPointerId(0); 4605 mVelocityTracker = VelocityTracker.obtain(); 4606 mVelocityTracker.addMovement(event); 4607 mStartTime = time; 4608 mStartX = event.getX(); 4609 mStartY = event.getY(); 4610 mLastX = mStartX; 4611 mLastY = mStartY; 4612 mAccumulatedX = 0; 4613 mAccumulatedY = 0; 4614 4615 // If we caught a fling, then pretend that the tap slop has already 4616 // been exceeded to suppress taps whose only purpose is to stop the fling. 4617 mConsumedMovement = caughtFling; 4618 break; 4619 } 4620 4621 case MotionEvent.ACTION_MOVE: 4622 case MotionEvent.ACTION_UP: { 4623 if (mActivePointerId < 0) { 4624 break; 4625 } 4626 final int index = event.findPointerIndex(mActivePointerId); 4627 if (index < 0) { 4628 finishKeys(time); 4629 finishTracking(time); 4630 break; 4631 } 4632 4633 mVelocityTracker.addMovement(event); 4634 final float x = event.getX(index); 4635 final float y = event.getY(index); 4636 mAccumulatedX += x - mLastX; 4637 mAccumulatedY += y - mLastY; 4638 mLastX = x; 4639 mLastY = y; 4640 4641 // Consume any accumulated movement so far. 4642 final int metaState = event.getMetaState(); 4643 consumeAccumulatedMovement(time, metaState); 4644 4645 // Detect taps and flings. 4646 if (action == MotionEvent.ACTION_UP) { 4647 if (mConsumedMovement && mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 4648 // It might be a fling. 4649 mVelocityTracker.computeCurrentVelocity(1000, mConfigMaxFlingVelocity); 4650 final float vx = mVelocityTracker.getXVelocity(mActivePointerId); 4651 final float vy = mVelocityTracker.getYVelocity(mActivePointerId); 4652 if (!startFling(time, vx, vy)) { 4653 finishKeys(time); 4654 } 4655 } 4656 finishTracking(time); 4657 } 4658 break; 4659 } 4660 4661 case MotionEvent.ACTION_CANCEL: { 4662 finishKeys(time); 4663 finishTracking(time); 4664 break; 4665 } 4666 } 4667 } 4668 4669 public void cancel(MotionEvent event) { 4670 if (mCurrentDeviceId == event.getDeviceId() 4671 && mCurrentSource == event.getSource()) { 4672 final long time = event.getEventTime(); 4673 finishKeys(time); 4674 finishTracking(time); 4675 } 4676 } 4677 4678 private void finishKeys(long time) { 4679 cancelFling(); 4680 sendKeyUp(time); 4681 } 4682 4683 private void finishTracking(long time) { 4684 if (mActivePointerId >= 0) { 4685 mActivePointerId = -1; 4686 mVelocityTracker.recycle(); 4687 mVelocityTracker = null; 4688 } 4689 } 4690 4691 private void consumeAccumulatedMovement(long time, int metaState) { 4692 final float absX = Math.abs(mAccumulatedX); 4693 final float absY = Math.abs(mAccumulatedY); 4694 if (absX >= absY) { 4695 if (absX >= mConfigTickDistance) { 4696 mAccumulatedX = consumeAccumulatedMovement(time, metaState, mAccumulatedX, 4697 KeyEvent.KEYCODE_DPAD_LEFT, KeyEvent.KEYCODE_DPAD_RIGHT); 4698 mAccumulatedY = 0; 4699 mConsumedMovement = true; 4700 } 4701 } else { 4702 if (absY >= mConfigTickDistance) { 4703 mAccumulatedY = consumeAccumulatedMovement(time, metaState, mAccumulatedY, 4704 KeyEvent.KEYCODE_DPAD_UP, KeyEvent.KEYCODE_DPAD_DOWN); 4705 mAccumulatedX = 0; 4706 mConsumedMovement = true; 4707 } 4708 } 4709 } 4710 4711 private float consumeAccumulatedMovement(long time, int metaState, 4712 float accumulator, int negativeKeyCode, int positiveKeyCode) { 4713 while (accumulator <= -mConfigTickDistance) { 4714 sendKeyDownOrRepeat(time, negativeKeyCode, metaState); 4715 accumulator += mConfigTickDistance; 4716 } 4717 while (accumulator >= mConfigTickDistance) { 4718 sendKeyDownOrRepeat(time, positiveKeyCode, metaState); 4719 accumulator -= mConfigTickDistance; 4720 } 4721 return accumulator; 4722 } 4723 4724 private void sendKeyDownOrRepeat(long time, int keyCode, int metaState) { 4725 if (mPendingKeyCode != keyCode) { 4726 sendKeyUp(time); 4727 mPendingKeyDownTime = time; 4728 mPendingKeyCode = keyCode; 4729 mPendingKeyRepeatCount = 0; 4730 } else { 4731 mPendingKeyRepeatCount += 1; 4732 } 4733 mPendingKeyMetaState = metaState; 4734 4735 // Note: Normally we would pass FLAG_LONG_PRESS when the repeat count is 1 4736 // but it doesn't quite make sense when simulating the events in this way. 4737 if (LOCAL_DEBUG) { 4738 Log.d(LOCAL_TAG, "Sending key down: keyCode=" + mPendingKeyCode 4739 + ", repeatCount=" + mPendingKeyRepeatCount 4740 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 4741 } 4742 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 4743 KeyEvent.ACTION_DOWN, mPendingKeyCode, mPendingKeyRepeatCount, 4744 mPendingKeyMetaState, mCurrentDeviceId, 4745 KeyEvent.FLAG_FALLBACK, mCurrentSource)); 4746 } 4747 4748 private void sendKeyUp(long time) { 4749 if (mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 4750 if (LOCAL_DEBUG) { 4751 Log.d(LOCAL_TAG, "Sending key up: keyCode=" + mPendingKeyCode 4752 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 4753 } 4754 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 4755 KeyEvent.ACTION_UP, mPendingKeyCode, 0, mPendingKeyMetaState, 4756 mCurrentDeviceId, 0, KeyEvent.FLAG_FALLBACK, 4757 mCurrentSource)); 4758 mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 4759 } 4760 } 4761 4762 private boolean startFling(long time, float vx, float vy) { 4763 if (LOCAL_DEBUG) { 4764 Log.d(LOCAL_TAG, "Considering fling: vx=" + vx + ", vy=" + vy 4765 + ", min=" + mConfigMinFlingVelocity); 4766 } 4767 4768 // Flings must be oriented in the same direction as the preceding movements. 4769 switch (mPendingKeyCode) { 4770 case KeyEvent.KEYCODE_DPAD_LEFT: 4771 if (-vx >= mConfigMinFlingVelocity 4772 && Math.abs(vy) < mConfigMinFlingVelocity) { 4773 mFlingVelocity = -vx; 4774 break; 4775 } 4776 return false; 4777 4778 case KeyEvent.KEYCODE_DPAD_RIGHT: 4779 if (vx >= mConfigMinFlingVelocity 4780 && Math.abs(vy) < mConfigMinFlingVelocity) { 4781 mFlingVelocity = vx; 4782 break; 4783 } 4784 return false; 4785 4786 case KeyEvent.KEYCODE_DPAD_UP: 4787 if (-vy >= mConfigMinFlingVelocity 4788 && Math.abs(vx) < mConfigMinFlingVelocity) { 4789 mFlingVelocity = -vy; 4790 break; 4791 } 4792 return false; 4793 4794 case KeyEvent.KEYCODE_DPAD_DOWN: 4795 if (vy >= mConfigMinFlingVelocity 4796 && Math.abs(vx) < mConfigMinFlingVelocity) { 4797 mFlingVelocity = vy; 4798 break; 4799 } 4800 return false; 4801 } 4802 4803 // Post the first fling event. 4804 mFlinging = postFling(time); 4805 return mFlinging; 4806 } 4807 4808 private boolean postFling(long time) { 4809 // The idea here is to estimate the time when the pointer would have 4810 // traveled one tick distance unit given the current fling velocity. 4811 // This effect creates continuity of motion. 4812 if (mFlingVelocity >= mConfigMinFlingVelocity) { 4813 long delay = (long)(mConfigTickDistance / mFlingVelocity * 1000); 4814 postAtTime(mFlingRunnable, time + delay); 4815 if (LOCAL_DEBUG) { 4816 Log.d(LOCAL_TAG, "Posted fling: velocity=" 4817 + mFlingVelocity + ", delay=" + delay 4818 + ", keyCode=" + mPendingKeyCode); 4819 } 4820 return true; 4821 } 4822 return false; 4823 } 4824 4825 private void cancelFling() { 4826 if (mFlinging) { 4827 removeCallbacks(mFlingRunnable); 4828 mFlinging = false; 4829 } 4830 } 4831 4832 private final Runnable mFlingRunnable = new Runnable() { 4833 @Override 4834 public void run() { 4835 final long time = SystemClock.uptimeMillis(); 4836 sendKeyDownOrRepeat(time, mPendingKeyCode, mPendingKeyMetaState); 4837 mFlingVelocity *= FLING_TICK_DECAY; 4838 if (!postFling(time)) { 4839 mFlinging = false; 4840 finishKeys(time); 4841 } 4842 } 4843 }; 4844 } 4845 4846 final class SyntheticKeyHandler { 4847 4848 public boolean process(KeyEvent event) { 4849 // In some locales (like Japan) controllers use B for confirm and A for back, rather 4850 // than vice versa, so we need to special case this here since the input system itself 4851 // is not locale-aware. 4852 int keyCode; 4853 switch(event.getKeyCode()) { 4854 case KeyEvent.KEYCODE_BUTTON_A: 4855 case KeyEvent.KEYCODE_BUTTON_C: 4856 case KeyEvent.KEYCODE_BUTTON_X: 4857 case KeyEvent.KEYCODE_BUTTON_Z: 4858 keyCode = mFlipControllerFallbackKeys ? 4859 KeyEvent.KEYCODE_BACK : KeyEvent.KEYCODE_DPAD_CENTER; 4860 break; 4861 case KeyEvent.KEYCODE_BUTTON_B: 4862 case KeyEvent.KEYCODE_BUTTON_Y: 4863 keyCode = mFlipControllerFallbackKeys ? 4864 KeyEvent.KEYCODE_DPAD_CENTER : KeyEvent.KEYCODE_BACK; 4865 break; 4866 case KeyEvent.KEYCODE_BUTTON_THUMBL: 4867 case KeyEvent.KEYCODE_BUTTON_THUMBR: 4868 case KeyEvent.KEYCODE_BUTTON_START: 4869 case KeyEvent.KEYCODE_BUTTON_1: 4870 case KeyEvent.KEYCODE_BUTTON_2: 4871 case KeyEvent.KEYCODE_BUTTON_3: 4872 case KeyEvent.KEYCODE_BUTTON_4: 4873 case KeyEvent.KEYCODE_BUTTON_5: 4874 case KeyEvent.KEYCODE_BUTTON_6: 4875 case KeyEvent.KEYCODE_BUTTON_7: 4876 case KeyEvent.KEYCODE_BUTTON_8: 4877 case KeyEvent.KEYCODE_BUTTON_9: 4878 case KeyEvent.KEYCODE_BUTTON_10: 4879 case KeyEvent.KEYCODE_BUTTON_11: 4880 case KeyEvent.KEYCODE_BUTTON_12: 4881 case KeyEvent.KEYCODE_BUTTON_13: 4882 case KeyEvent.KEYCODE_BUTTON_14: 4883 case KeyEvent.KEYCODE_BUTTON_15: 4884 case KeyEvent.KEYCODE_BUTTON_16: 4885 keyCode = KeyEvent.KEYCODE_DPAD_CENTER; 4886 break; 4887 case KeyEvent.KEYCODE_BUTTON_SELECT: 4888 case KeyEvent.KEYCODE_BUTTON_MODE: 4889 keyCode = KeyEvent.KEYCODE_MENU; 4890 default: 4891 return false; 4892 } 4893 4894 enqueueInputEvent(new KeyEvent(event.getDownTime(), event.getEventTime(), 4895 event.getAction(), keyCode, event.getRepeatCount(), event.getMetaState(), 4896 event.getDeviceId(), event.getScanCode(), 4897 event.getFlags() | KeyEvent.FLAG_FALLBACK, event.getSource())); 4898 return true; 4899 } 4900 4901 } 4902 4903 /** 4904 * Returns true if the key is used for keyboard navigation. 4905 * @param keyEvent The key event. 4906 * @return True if the key is used for keyboard navigation. 4907 */ 4908 private static boolean isNavigationKey(KeyEvent keyEvent) { 4909 switch (keyEvent.getKeyCode()) { 4910 case KeyEvent.KEYCODE_DPAD_LEFT: 4911 case KeyEvent.KEYCODE_DPAD_RIGHT: 4912 case KeyEvent.KEYCODE_DPAD_UP: 4913 case KeyEvent.KEYCODE_DPAD_DOWN: 4914 case KeyEvent.KEYCODE_DPAD_CENTER: 4915 case KeyEvent.KEYCODE_PAGE_UP: 4916 case KeyEvent.KEYCODE_PAGE_DOWN: 4917 case KeyEvent.KEYCODE_MOVE_HOME: 4918 case KeyEvent.KEYCODE_MOVE_END: 4919 case KeyEvent.KEYCODE_TAB: 4920 case KeyEvent.KEYCODE_SPACE: 4921 case KeyEvent.KEYCODE_ENTER: 4922 return true; 4923 } 4924 return false; 4925 } 4926 4927 /** 4928 * Returns true if the key is used for typing. 4929 * @param keyEvent The key event. 4930 * @return True if the key is used for typing. 4931 */ 4932 private static boolean isTypingKey(KeyEvent keyEvent) { 4933 return keyEvent.getUnicodeChar() > 0; 4934 } 4935 4936 /** 4937 * See if the key event means we should leave touch mode (and leave touch mode if so). 4938 * @param event The key event. 4939 * @return Whether this key event should be consumed (meaning the act of 4940 * leaving touch mode alone is considered the event). 4941 */ 4942 private boolean checkForLeavingTouchModeAndConsume(KeyEvent event) { 4943 // Only relevant in touch mode. 4944 if (!mAttachInfo.mInTouchMode) { 4945 return false; 4946 } 4947 4948 // Only consider leaving touch mode on DOWN or MULTIPLE actions, never on UP. 4949 final int action = event.getAction(); 4950 if (action != KeyEvent.ACTION_DOWN && action != KeyEvent.ACTION_MULTIPLE) { 4951 return false; 4952 } 4953 4954 // Don't leave touch mode if the IME told us not to. 4955 if ((event.getFlags() & KeyEvent.FLAG_KEEP_TOUCH_MODE) != 0) { 4956 return false; 4957 } 4958 4959 // If the key can be used for keyboard navigation then leave touch mode 4960 // and select a focused view if needed (in ensureTouchMode). 4961 // When a new focused view is selected, we consume the navigation key because 4962 // navigation doesn't make much sense unless a view already has focus so 4963 // the key's purpose is to set focus. 4964 if (isNavigationKey(event)) { 4965 return ensureTouchMode(false); 4966 } 4967 4968 // If the key can be used for typing then leave touch mode 4969 // and select a focused view if needed (in ensureTouchMode). 4970 // Always allow the view to process the typing key. 4971 if (isTypingKey(event)) { 4972 ensureTouchMode(false); 4973 return false; 4974 } 4975 4976 return false; 4977 } 4978 4979 /* drag/drop */ 4980 void setLocalDragState(Object obj) { 4981 mLocalDragState = obj; 4982 } 4983 4984 private void handleDragEvent(DragEvent event) { 4985 // From the root, only drag start/end/location are dispatched. entered/exited 4986 // are determined and dispatched by the viewgroup hierarchy, who then report 4987 // that back here for ultimate reporting back to the framework. 4988 if (mView != null && mAdded) { 4989 final int what = event.mAction; 4990 4991 if (what == DragEvent.ACTION_DRAG_EXITED) { 4992 // A direct EXITED event means that the window manager knows we've just crossed 4993 // a window boundary, so the current drag target within this one must have 4994 // just been exited. Send it the usual notifications and then we're done 4995 // for now. 4996 mView.dispatchDragEvent(event); 4997 } else { 4998 // Cache the drag description when the operation starts, then fill it in 4999 // on subsequent calls as a convenience 5000 if (what == DragEvent.ACTION_DRAG_STARTED) { 5001 mCurrentDragView = null; // Start the current-recipient tracking 5002 mDragDescription = event.mClipDescription; 5003 } else { 5004 event.mClipDescription = mDragDescription; 5005 } 5006 5007 // For events with a [screen] location, translate into window coordinates 5008 if ((what == DragEvent.ACTION_DRAG_LOCATION) || (what == DragEvent.ACTION_DROP)) { 5009 mDragPoint.set(event.mX, event.mY); 5010 if (mTranslator != null) { 5011 mTranslator.translatePointInScreenToAppWindow(mDragPoint); 5012 } 5013 5014 if (mCurScrollY != 0) { 5015 mDragPoint.offset(0, mCurScrollY); 5016 } 5017 5018 event.mX = mDragPoint.x; 5019 event.mY = mDragPoint.y; 5020 } 5021 5022 // Remember who the current drag target is pre-dispatch 5023 final View prevDragView = mCurrentDragView; 5024 5025 // Now dispatch the drag/drop event 5026 boolean result = mView.dispatchDragEvent(event); 5027 5028 // If we changed apparent drag target, tell the OS about it 5029 if (prevDragView != mCurrentDragView) { 5030 try { 5031 if (prevDragView != null) { 5032 mWindowSession.dragRecipientExited(mWindow); 5033 } 5034 if (mCurrentDragView != null) { 5035 mWindowSession.dragRecipientEntered(mWindow); 5036 } 5037 } catch (RemoteException e) { 5038 Slog.e(TAG, "Unable to note drag target change"); 5039 } 5040 } 5041 5042 // Report the drop result when we're done 5043 if (what == DragEvent.ACTION_DROP) { 5044 mDragDescription = null; 5045 try { 5046 Log.i(TAG, "Reporting drop result: " + result); 5047 mWindowSession.reportDropResult(mWindow, result); 5048 } catch (RemoteException e) { 5049 Log.e(TAG, "Unable to report drop result"); 5050 } 5051 } 5052 5053 // When the drag operation ends, release any local state object 5054 // that may have been in use 5055 if (what == DragEvent.ACTION_DRAG_ENDED) { 5056 setLocalDragState(null); 5057 } 5058 } 5059 } 5060 event.recycle(); 5061 } 5062 5063 public void handleDispatchSystemUiVisibilityChanged(SystemUiVisibilityInfo args) { 5064 if (mSeq != args.seq) { 5065 // The sequence has changed, so we need to update our value and make 5066 // sure to do a traversal afterward so the window manager is given our 5067 // most recent data. 5068 mSeq = args.seq; 5069 mAttachInfo.mForceReportNewAttributes = true; 5070 scheduleTraversals(); 5071 } 5072 if (mView == null) return; 5073 if (args.localChanges != 0) { 5074 mView.updateLocalSystemUiVisibility(args.localValue, args.localChanges); 5075 } 5076 if (mAttachInfo != null) { 5077 int visibility = args.globalVisibility&View.SYSTEM_UI_CLEARABLE_FLAGS; 5078 if (visibility != mAttachInfo.mGlobalSystemUiVisibility) { 5079 mAttachInfo.mGlobalSystemUiVisibility = visibility; 5080 mView.dispatchSystemUiVisibilityChanged(visibility); 5081 } 5082 } 5083 } 5084 5085 public void handleDispatchDoneAnimating() { 5086 if (mWindowsAnimating) { 5087 mWindowsAnimating = false; 5088 if (!mDirty.isEmpty() || mIsAnimating || mFullRedrawNeeded) { 5089 scheduleTraversals(); 5090 } 5091 } 5092 } 5093 5094 public void getLastTouchPoint(Point outLocation) { 5095 outLocation.x = (int) mLastTouchPoint.x; 5096 outLocation.y = (int) mLastTouchPoint.y; 5097 } 5098 5099 public void setDragFocus(View newDragTarget) { 5100 if (mCurrentDragView != newDragTarget) { 5101 mCurrentDragView = newDragTarget; 5102 } 5103 } 5104 5105 private AudioManager getAudioManager() { 5106 if (mView == null) { 5107 throw new IllegalStateException("getAudioManager called when there is no mView"); 5108 } 5109 if (mAudioManager == null) { 5110 mAudioManager = (AudioManager) mView.getContext().getSystemService(Context.AUDIO_SERVICE); 5111 } 5112 return mAudioManager; 5113 } 5114 5115 public AccessibilityInteractionController getAccessibilityInteractionController() { 5116 if (mView == null) { 5117 throw new IllegalStateException("getAccessibilityInteractionController" 5118 + " called when there is no mView"); 5119 } 5120 if (mAccessibilityInteractionController == null) { 5121 mAccessibilityInteractionController = new AccessibilityInteractionController(this); 5122 } 5123 return mAccessibilityInteractionController; 5124 } 5125 5126 private int relayoutWindow(WindowManager.LayoutParams params, int viewVisibility, 5127 boolean insetsPending) throws RemoteException { 5128 5129 float appScale = mAttachInfo.mApplicationScale; 5130 boolean restore = false; 5131 if (params != null && mTranslator != null) { 5132 restore = true; 5133 params.backup(); 5134 mTranslator.translateWindowLayout(params); 5135 } 5136 if (params != null) { 5137 if (DBG) Log.d(TAG, "WindowLayout in layoutWindow:" + params); 5138 } 5139 mPendingConfiguration.seq = 0; 5140 //Log.d(TAG, ">>>>>> CALLING relayout"); 5141 if (params != null && mOrigWindowType != params.type) { 5142 // For compatibility with old apps, don't crash here. 5143 if (mTargetSdkVersion < android.os.Build.VERSION_CODES.ICE_CREAM_SANDWICH) { 5144 Slog.w(TAG, "Window type can not be changed after " 5145 + "the window is added; ignoring change of " + mView); 5146 params.type = mOrigWindowType; 5147 } 5148 } 5149 int relayoutResult = mWindowSession.relayout( 5150 mWindow, mSeq, params, 5151 (int) (mView.getMeasuredWidth() * appScale + 0.5f), 5152 (int) (mView.getMeasuredHeight() * appScale + 0.5f), 5153 viewVisibility, insetsPending ? WindowManagerGlobal.RELAYOUT_INSETS_PENDING : 0, 5154 mWinFrame, mPendingOverscanInsets, mPendingContentInsets, mPendingVisibleInsets, 5155 mPendingConfiguration, mSurface); 5156 //Log.d(TAG, "<<<<<< BACK FROM relayout"); 5157 if (restore) { 5158 params.restore(); 5159 } 5160 5161 if (mTranslator != null) { 5162 mTranslator.translateRectInScreenToAppWinFrame(mWinFrame); 5163 mTranslator.translateRectInScreenToAppWindow(mPendingOverscanInsets); 5164 mTranslator.translateRectInScreenToAppWindow(mPendingContentInsets); 5165 mTranslator.translateRectInScreenToAppWindow(mPendingVisibleInsets); 5166 } 5167 return relayoutResult; 5168 } 5169 5170 /** 5171 * {@inheritDoc} 5172 */ 5173 @Override 5174 public void playSoundEffect(int effectId) { 5175 checkThread(); 5176 5177 if (mMediaDisabled) { 5178 return; 5179 } 5180 5181 try { 5182 final AudioManager audioManager = getAudioManager(); 5183 5184 switch (effectId) { 5185 case SoundEffectConstants.CLICK: 5186 audioManager.playSoundEffect(AudioManager.FX_KEY_CLICK); 5187 return; 5188 case SoundEffectConstants.NAVIGATION_DOWN: 5189 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_DOWN); 5190 return; 5191 case SoundEffectConstants.NAVIGATION_LEFT: 5192 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_LEFT); 5193 return; 5194 case SoundEffectConstants.NAVIGATION_RIGHT: 5195 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_RIGHT); 5196 return; 5197 case SoundEffectConstants.NAVIGATION_UP: 5198 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_UP); 5199 return; 5200 default: 5201 throw new IllegalArgumentException("unknown effect id " + effectId + 5202 " not defined in " + SoundEffectConstants.class.getCanonicalName()); 5203 } 5204 } catch (IllegalStateException e) { 5205 // Exception thrown by getAudioManager() when mView is null 5206 Log.e(TAG, "FATAL EXCEPTION when attempting to play sound effect: " + e); 5207 e.printStackTrace(); 5208 } 5209 } 5210 5211 /** 5212 * {@inheritDoc} 5213 */ 5214 @Override 5215 public boolean performHapticFeedback(int effectId, boolean always) { 5216 try { 5217 return mWindowSession.performHapticFeedback(mWindow, effectId, always); 5218 } catch (RemoteException e) { 5219 return false; 5220 } 5221 } 5222 5223 /** 5224 * {@inheritDoc} 5225 */ 5226 @Override 5227 public View focusSearch(View focused, int direction) { 5228 checkThread(); 5229 if (!(mView instanceof ViewGroup)) { 5230 return null; 5231 } 5232 return FocusFinder.getInstance().findNextFocus((ViewGroup) mView, focused, direction); 5233 } 5234 5235 public void debug() { 5236 mView.debug(); 5237 } 5238 5239 public void dump(String prefix, FileDescriptor fd, PrintWriter writer, String[] args) { 5240 String innerPrefix = prefix + " "; 5241 writer.print(prefix); writer.println("ViewRoot:"); 5242 writer.print(innerPrefix); writer.print("mAdded="); writer.print(mAdded); 5243 writer.print(" mRemoved="); writer.println(mRemoved); 5244 writer.print(innerPrefix); writer.print("mConsumeBatchedInputScheduled="); 5245 writer.println(mConsumeBatchedInputScheduled); 5246 writer.print(innerPrefix); writer.print("mPendingInputEventCount="); 5247 writer.println(mPendingInputEventCount); 5248 writer.print(innerPrefix); writer.print("mProcessInputEventsScheduled="); 5249 writer.println(mProcessInputEventsScheduled); 5250 writer.print(innerPrefix); writer.print("mTraversalScheduled="); 5251 writer.print(mTraversalScheduled); 5252 if (mTraversalScheduled) { 5253 writer.print(" (barrier="); writer.print(mTraversalBarrier); writer.println(")"); 5254 } else { 5255 writer.println(); 5256 } 5257 mFirstInputStage.dump(innerPrefix, writer); 5258 5259 mChoreographer.dump(prefix, writer); 5260 5261 writer.print(prefix); writer.println("View Hierarchy:"); 5262 dumpViewHierarchy(innerPrefix, writer, mView); 5263 } 5264 5265 private void dumpViewHierarchy(String prefix, PrintWriter writer, View view) { 5266 writer.print(prefix); 5267 if (view == null) { 5268 writer.println("null"); 5269 return; 5270 } 5271 writer.println(view.toString()); 5272 if (!(view instanceof ViewGroup)) { 5273 return; 5274 } 5275 ViewGroup grp = (ViewGroup)view; 5276 final int N = grp.getChildCount(); 5277 if (N <= 0) { 5278 return; 5279 } 5280 prefix = prefix + " "; 5281 for (int i=0; i<N; i++) { 5282 dumpViewHierarchy(prefix, writer, grp.getChildAt(i)); 5283 } 5284 } 5285 5286 public void dumpGfxInfo(int[] info) { 5287 info[0] = info[1] = 0; 5288 if (mView != null) { 5289 getGfxInfo(mView, info); 5290 } 5291 } 5292 5293 private static void getGfxInfo(View view, int[] info) { 5294 DisplayList displayList = view.mDisplayList; 5295 info[0]++; 5296 if (displayList != null) { 5297 info[1] += displayList.getSize(); 5298 } 5299 5300 if (view instanceof ViewGroup) { 5301 ViewGroup group = (ViewGroup) view; 5302 5303 int count = group.getChildCount(); 5304 for (int i = 0; i < count; i++) { 5305 getGfxInfo(group.getChildAt(i), info); 5306 } 5307 } 5308 } 5309 5310 /** 5311 * @param immediate True, do now if not in traversal. False, put on queue and do later. 5312 * @return True, request has been queued. False, request has been completed. 5313 */ 5314 boolean die(boolean immediate) { 5315 // Make sure we do execute immediately if we are in the middle of a traversal or the damage 5316 // done by dispatchDetachedFromWindow will cause havoc on return. 5317 if (immediate && !mIsInTraversal) { 5318 doDie(); 5319 return false; 5320 } 5321 5322 if (!mIsDrawing) { 5323 destroyHardwareRenderer(); 5324 } else { 5325 Log.e(TAG, "Attempting to destroy the window while drawing!\n" + 5326 " window=" + this + ", title=" + mWindowAttributes.getTitle()); 5327 } 5328 mHandler.sendEmptyMessage(MSG_DIE); 5329 return true; 5330 } 5331 5332 void doDie() { 5333 checkThread(); 5334 if (LOCAL_LOGV) Log.v(TAG, "DIE in " + this + " of " + mSurface); 5335 synchronized (this) { 5336 if (mRemoved) { 5337 return; 5338 } 5339 mRemoved = true; 5340 if (mAdded) { 5341 dispatchDetachedFromWindow(); 5342 } 5343 5344 if (mAdded && !mFirst) { 5345 invalidateDisplayLists(); 5346 destroyHardwareRenderer(); 5347 5348 if (mView != null) { 5349 int viewVisibility = mView.getVisibility(); 5350 boolean viewVisibilityChanged = mViewVisibility != viewVisibility; 5351 if (mWindowAttributesChanged || viewVisibilityChanged) { 5352 // If layout params have been changed, first give them 5353 // to the window manager to make sure it has the correct 5354 // animation info. 5355 try { 5356 if ((relayoutWindow(mWindowAttributes, viewVisibility, false) 5357 & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 5358 mWindowSession.finishDrawing(mWindow); 5359 } 5360 } catch (RemoteException e) { 5361 } 5362 } 5363 5364 mSurface.release(); 5365 } 5366 } 5367 5368 mAdded = false; 5369 } 5370 WindowManagerGlobal.getInstance().doRemoveView(this); 5371 } 5372 5373 public void requestUpdateConfiguration(Configuration config) { 5374 Message msg = mHandler.obtainMessage(MSG_UPDATE_CONFIGURATION, config); 5375 mHandler.sendMessage(msg); 5376 } 5377 5378 public void loadSystemProperties() { 5379 mHandler.post(new Runnable() { 5380 @Override 5381 public void run() { 5382 // Profiling 5383 mProfileRendering = SystemProperties.getBoolean(PROPERTY_PROFILE_RENDERING, false); 5384 profileRendering(mAttachInfo.mHasWindowFocus); 5385 5386 // Media (used by sound effects) 5387 mMediaDisabled = SystemProperties.getBoolean(PROPERTY_MEDIA_DISABLED, false); 5388 5389 // Hardware rendering 5390 if (mAttachInfo.mHardwareRenderer != null) { 5391 if (mAttachInfo.mHardwareRenderer.loadSystemProperties(mHolder.getSurface())) { 5392 invalidate(); 5393 } 5394 } 5395 5396 // Layout debugging 5397 boolean layout = SystemProperties.getBoolean(View.DEBUG_LAYOUT_PROPERTY, false); 5398 if (layout != mAttachInfo.mDebugLayout) { 5399 mAttachInfo.mDebugLayout = layout; 5400 if (!mHandler.hasMessages(MSG_INVALIDATE_WORLD)) { 5401 mHandler.sendEmptyMessageDelayed(MSG_INVALIDATE_WORLD, 200); 5402 } 5403 } 5404 } 5405 }); 5406 } 5407 5408 private void destroyHardwareRenderer() { 5409 AttachInfo attachInfo = mAttachInfo; 5410 HardwareRenderer hardwareRenderer = attachInfo.mHardwareRenderer; 5411 5412 if (hardwareRenderer != null) { 5413 if (mView != null) { 5414 hardwareRenderer.destroyHardwareResources(mView); 5415 } 5416 hardwareRenderer.destroy(true); 5417 hardwareRenderer.setRequested(false); 5418 5419 attachInfo.mHardwareRenderer = null; 5420 attachInfo.mHardwareAccelerated = false; 5421 } 5422 } 5423 5424 public void dispatchFinishInputConnection(InputConnection connection) { 5425 Message msg = mHandler.obtainMessage(MSG_FINISH_INPUT_CONNECTION, connection); 5426 mHandler.sendMessage(msg); 5427 } 5428 5429 public void dispatchResized(Rect frame, Rect overscanInsets, Rect contentInsets, 5430 Rect visibleInsets, boolean reportDraw, Configuration newConfig) { 5431 if (DEBUG_LAYOUT) Log.v(TAG, "Resizing " + this + ": frame=" + frame.toShortString() 5432 + " contentInsets=" + contentInsets.toShortString() 5433 + " visibleInsets=" + visibleInsets.toShortString() 5434 + " reportDraw=" + reportDraw); 5435 Message msg = mHandler.obtainMessage(reportDraw ? MSG_RESIZED_REPORT : MSG_RESIZED); 5436 if (mTranslator != null) { 5437 mTranslator.translateRectInScreenToAppWindow(frame); 5438 mTranslator.translateRectInScreenToAppWindow(overscanInsets); 5439 mTranslator.translateRectInScreenToAppWindow(contentInsets); 5440 mTranslator.translateRectInScreenToAppWindow(visibleInsets); 5441 } 5442 SomeArgs args = SomeArgs.obtain(); 5443 final boolean sameProcessCall = (Binder.getCallingPid() == android.os.Process.myPid()); 5444 args.arg1 = sameProcessCall ? new Rect(frame) : frame; 5445 args.arg2 = sameProcessCall ? new Rect(contentInsets) : contentInsets; 5446 args.arg3 = sameProcessCall ? new Rect(visibleInsets) : visibleInsets; 5447 args.arg4 = sameProcessCall && newConfig != null ? new Configuration(newConfig) : newConfig; 5448 args.arg5 = sameProcessCall ? new Rect(overscanInsets) : overscanInsets; 5449 msg.obj = args; 5450 mHandler.sendMessage(msg); 5451 } 5452 5453 public void dispatchMoved(int newX, int newY) { 5454 if (DEBUG_LAYOUT) Log.v(TAG, "Window moved " + this + ": newX=" + newX + " newY=" + newY); 5455 if (mTranslator != null) { 5456 PointF point = new PointF(newX, newY); 5457 mTranslator.translatePointInScreenToAppWindow(point); 5458 newX = (int) (point.x + 0.5); 5459 newY = (int) (point.y + 0.5); 5460 } 5461 Message msg = mHandler.obtainMessage(MSG_WINDOW_MOVED, newX, newY); 5462 mHandler.sendMessage(msg); 5463 } 5464 5465 /** 5466 * Represents a pending input event that is waiting in a queue. 5467 * 5468 * Input events are processed in serial order by the timestamp specified by 5469 * {@link InputEvent#getEventTimeNano()}. In general, the input dispatcher delivers 5470 * one input event to the application at a time and waits for the application 5471 * to finish handling it before delivering the next one. 5472 * 5473 * However, because the application or IME can synthesize and inject multiple 5474 * key events at a time without going through the input dispatcher, we end up 5475 * needing a queue on the application's side. 5476 */ 5477 private static final class QueuedInputEvent { 5478 public static final int FLAG_DELIVER_POST_IME = 1 << 0; 5479 public static final int FLAG_DEFERRED = 1 << 1; 5480 public static final int FLAG_FINISHED = 1 << 2; 5481 public static final int FLAG_FINISHED_HANDLED = 1 << 3; 5482 public static final int FLAG_RESYNTHESIZED = 1 << 4; 5483 5484 public QueuedInputEvent mNext; 5485 5486 public InputEvent mEvent; 5487 public InputEventReceiver mReceiver; 5488 public int mFlags; 5489 5490 public boolean shouldSkipIme() { 5491 if ((mFlags & FLAG_DELIVER_POST_IME) != 0) { 5492 return true; 5493 } 5494 return mEvent instanceof MotionEvent 5495 && mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER); 5496 } 5497 } 5498 5499 private QueuedInputEvent obtainQueuedInputEvent(InputEvent event, 5500 InputEventReceiver receiver, int flags) { 5501 QueuedInputEvent q = mQueuedInputEventPool; 5502 if (q != null) { 5503 mQueuedInputEventPoolSize -= 1; 5504 mQueuedInputEventPool = q.mNext; 5505 q.mNext = null; 5506 } else { 5507 q = new QueuedInputEvent(); 5508 } 5509 5510 q.mEvent = event; 5511 q.mReceiver = receiver; 5512 q.mFlags = flags; 5513 return q; 5514 } 5515 5516 private void recycleQueuedInputEvent(QueuedInputEvent q) { 5517 q.mEvent = null; 5518 q.mReceiver = null; 5519 5520 if (mQueuedInputEventPoolSize < MAX_QUEUED_INPUT_EVENT_POOL_SIZE) { 5521 mQueuedInputEventPoolSize += 1; 5522 q.mNext = mQueuedInputEventPool; 5523 mQueuedInputEventPool = q; 5524 } 5525 } 5526 5527 void enqueueInputEvent(InputEvent event) { 5528 enqueueInputEvent(event, null, 0, false); 5529 } 5530 5531 void enqueueInputEvent(InputEvent event, 5532 InputEventReceiver receiver, int flags, boolean processImmediately) { 5533 QueuedInputEvent q = obtainQueuedInputEvent(event, receiver, flags); 5534 5535 // Always enqueue the input event in order, regardless of its time stamp. 5536 // We do this because the application or the IME may inject key events 5537 // in response to touch events and we want to ensure that the injected keys 5538 // are processed in the order they were received and we cannot trust that 5539 // the time stamp of injected events are monotonic. 5540 QueuedInputEvent last = mPendingInputEventTail; 5541 if (last == null) { 5542 mPendingInputEventHead = q; 5543 mPendingInputEventTail = q; 5544 } else { 5545 last.mNext = q; 5546 mPendingInputEventTail = q; 5547 } 5548 mPendingInputEventCount += 1; 5549 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 5550 mPendingInputEventCount); 5551 5552 if (processImmediately) { 5553 doProcessInputEvents(); 5554 } else { 5555 scheduleProcessInputEvents(); 5556 } 5557 } 5558 5559 private void scheduleProcessInputEvents() { 5560 if (!mProcessInputEventsScheduled) { 5561 mProcessInputEventsScheduled = true; 5562 Message msg = mHandler.obtainMessage(MSG_PROCESS_INPUT_EVENTS); 5563 msg.setAsynchronous(true); 5564 mHandler.sendMessage(msg); 5565 } 5566 } 5567 5568 void doProcessInputEvents() { 5569 // Deliver all pending input events in the queue. 5570 while (mPendingInputEventHead != null) { 5571 QueuedInputEvent q = mPendingInputEventHead; 5572 mPendingInputEventHead = q.mNext; 5573 if (mPendingInputEventHead == null) { 5574 mPendingInputEventTail = null; 5575 } 5576 q.mNext = null; 5577 5578 mPendingInputEventCount -= 1; 5579 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 5580 mPendingInputEventCount); 5581 5582 deliverInputEvent(q); 5583 } 5584 5585 // We are done processing all input events that we can process right now 5586 // so we can clear the pending flag immediately. 5587 if (mProcessInputEventsScheduled) { 5588 mProcessInputEventsScheduled = false; 5589 mHandler.removeMessages(MSG_PROCESS_INPUT_EVENTS); 5590 } 5591 } 5592 5593 private void deliverInputEvent(QueuedInputEvent q) { 5594 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "deliverInputEvent"); 5595 try { 5596 if (mInputEventConsistencyVerifier != null) { 5597 mInputEventConsistencyVerifier.onInputEvent(q.mEvent, 0); 5598 } 5599 5600 InputStage stage = q.shouldSkipIme() ? mFirstPostImeInputStage : mFirstInputStage; 5601 if (stage != null) { 5602 stage.deliver(q); 5603 } else { 5604 finishInputEvent(q); 5605 } 5606 } finally { 5607 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 5608 } 5609 } 5610 5611 private void finishInputEvent(QueuedInputEvent q) { 5612 if (q.mReceiver != null) { 5613 boolean handled = (q.mFlags & QueuedInputEvent.FLAG_FINISHED_HANDLED) != 0; 5614 q.mReceiver.finishInputEvent(q.mEvent, handled); 5615 } else { 5616 q.mEvent.recycleIfNeededAfterDispatch(); 5617 } 5618 5619 recycleQueuedInputEvent(q); 5620 } 5621 5622 static boolean isTerminalInputEvent(InputEvent event) { 5623 if (event instanceof KeyEvent) { 5624 final KeyEvent keyEvent = (KeyEvent)event; 5625 return keyEvent.getAction() == KeyEvent.ACTION_UP; 5626 } else { 5627 final MotionEvent motionEvent = (MotionEvent)event; 5628 final int action = motionEvent.getAction(); 5629 return action == MotionEvent.ACTION_UP 5630 || action == MotionEvent.ACTION_CANCEL 5631 || action == MotionEvent.ACTION_HOVER_EXIT; 5632 } 5633 } 5634 5635 void scheduleConsumeBatchedInput() { 5636 if (!mConsumeBatchedInputScheduled) { 5637 mConsumeBatchedInputScheduled = true; 5638 mChoreographer.postCallback(Choreographer.CALLBACK_INPUT, 5639 mConsumedBatchedInputRunnable, null); 5640 } 5641 } 5642 5643 void unscheduleConsumeBatchedInput() { 5644 if (mConsumeBatchedInputScheduled) { 5645 mConsumeBatchedInputScheduled = false; 5646 mChoreographer.removeCallbacks(Choreographer.CALLBACK_INPUT, 5647 mConsumedBatchedInputRunnable, null); 5648 } 5649 } 5650 5651 void doConsumeBatchedInput(long frameTimeNanos) { 5652 if (mConsumeBatchedInputScheduled) { 5653 mConsumeBatchedInputScheduled = false; 5654 if (mInputEventReceiver != null) { 5655 if (mInputEventReceiver.consumeBatchedInputEvents(frameTimeNanos)) { 5656 // If we consumed a batch here, we want to go ahead and schedule the 5657 // consumption of batched input events on the next frame. Otherwise, we would 5658 // wait until we have more input events pending and might get starved by other 5659 // things occurring in the process. 5660 scheduleConsumeBatchedInput(); 5661 } 5662 } 5663 doProcessInputEvents(); 5664 } 5665 } 5666 5667 final class TraversalRunnable implements Runnable { 5668 @Override 5669 public void run() { 5670 doTraversal(); 5671 } 5672 } 5673 final TraversalRunnable mTraversalRunnable = new TraversalRunnable(); 5674 5675 final class WindowInputEventReceiver extends InputEventReceiver { 5676 public WindowInputEventReceiver(InputChannel inputChannel, Looper looper) { 5677 super(inputChannel, looper); 5678 } 5679 5680 @Override 5681 public void onInputEvent(InputEvent event) { 5682 enqueueInputEvent(event, this, 0, true); 5683 } 5684 5685 @Override 5686 public void onBatchedInputEventPending() { 5687 scheduleConsumeBatchedInput(); 5688 } 5689 5690 @Override 5691 public void dispose() { 5692 unscheduleConsumeBatchedInput(); 5693 super.dispose(); 5694 } 5695 } 5696 WindowInputEventReceiver mInputEventReceiver; 5697 5698 final class ConsumeBatchedInputRunnable implements Runnable { 5699 @Override 5700 public void run() { 5701 doConsumeBatchedInput(mChoreographer.getFrameTimeNanos()); 5702 } 5703 } 5704 final ConsumeBatchedInputRunnable mConsumedBatchedInputRunnable = 5705 new ConsumeBatchedInputRunnable(); 5706 boolean mConsumeBatchedInputScheduled; 5707 5708 final class InvalidateOnAnimationRunnable implements Runnable { 5709 private boolean mPosted; 5710 private final ArrayList<View> mViews = new ArrayList<View>(); 5711 private final ArrayList<AttachInfo.InvalidateInfo> mViewRects = 5712 new ArrayList<AttachInfo.InvalidateInfo>(); 5713 private View[] mTempViews; 5714 private AttachInfo.InvalidateInfo[] mTempViewRects; 5715 5716 public void addView(View view) { 5717 synchronized (this) { 5718 mViews.add(view); 5719 postIfNeededLocked(); 5720 } 5721 } 5722 5723 public void addViewRect(AttachInfo.InvalidateInfo info) { 5724 synchronized (this) { 5725 mViewRects.add(info); 5726 postIfNeededLocked(); 5727 } 5728 } 5729 5730 public void removeView(View view) { 5731 synchronized (this) { 5732 mViews.remove(view); 5733 5734 for (int i = mViewRects.size(); i-- > 0; ) { 5735 AttachInfo.InvalidateInfo info = mViewRects.get(i); 5736 if (info.target == view) { 5737 mViewRects.remove(i); 5738 info.recycle(); 5739 } 5740 } 5741 5742 if (mPosted && mViews.isEmpty() && mViewRects.isEmpty()) { 5743 mChoreographer.removeCallbacks(Choreographer.CALLBACK_ANIMATION, this, null); 5744 mPosted = false; 5745 } 5746 } 5747 } 5748 5749 @Override 5750 public void run() { 5751 final int viewCount; 5752 final int viewRectCount; 5753 synchronized (this) { 5754 mPosted = false; 5755 5756 viewCount = mViews.size(); 5757 if (viewCount != 0) { 5758 mTempViews = mViews.toArray(mTempViews != null 5759 ? mTempViews : new View[viewCount]); 5760 mViews.clear(); 5761 } 5762 5763 viewRectCount = mViewRects.size(); 5764 if (viewRectCount != 0) { 5765 mTempViewRects = mViewRects.toArray(mTempViewRects != null 5766 ? mTempViewRects : new AttachInfo.InvalidateInfo[viewRectCount]); 5767 mViewRects.clear(); 5768 } 5769 } 5770 5771 for (int i = 0; i < viewCount; i++) { 5772 mTempViews[i].invalidate(); 5773 mTempViews[i] = null; 5774 } 5775 5776 for (int i = 0; i < viewRectCount; i++) { 5777 final View.AttachInfo.InvalidateInfo info = mTempViewRects[i]; 5778 info.target.invalidate(info.left, info.top, info.right, info.bottom); 5779 info.recycle(); 5780 } 5781 } 5782 5783 private void postIfNeededLocked() { 5784 if (!mPosted) { 5785 mChoreographer.postCallback(Choreographer.CALLBACK_ANIMATION, this, null); 5786 mPosted = true; 5787 } 5788 } 5789 } 5790 final InvalidateOnAnimationRunnable mInvalidateOnAnimationRunnable = 5791 new InvalidateOnAnimationRunnable(); 5792 5793 public void dispatchInvalidateDelayed(View view, long delayMilliseconds) { 5794 Message msg = mHandler.obtainMessage(MSG_INVALIDATE, view); 5795 mHandler.sendMessageDelayed(msg, delayMilliseconds); 5796 } 5797 5798 public void dispatchInvalidateRectDelayed(AttachInfo.InvalidateInfo info, 5799 long delayMilliseconds) { 5800 final Message msg = mHandler.obtainMessage(MSG_INVALIDATE_RECT, info); 5801 mHandler.sendMessageDelayed(msg, delayMilliseconds); 5802 } 5803 5804 public void dispatchInvalidateOnAnimation(View view) { 5805 mInvalidateOnAnimationRunnable.addView(view); 5806 } 5807 5808 public void dispatchInvalidateRectOnAnimation(AttachInfo.InvalidateInfo info) { 5809 mInvalidateOnAnimationRunnable.addViewRect(info); 5810 } 5811 5812 public void enqueueDisplayList(DisplayList displayList) { 5813 mDisplayLists.add(displayList); 5814 } 5815 5816 public void cancelInvalidate(View view) { 5817 mHandler.removeMessages(MSG_INVALIDATE, view); 5818 // fixme: might leak the AttachInfo.InvalidateInfo objects instead of returning 5819 // them to the pool 5820 mHandler.removeMessages(MSG_INVALIDATE_RECT, view); 5821 mInvalidateOnAnimationRunnable.removeView(view); 5822 } 5823 5824 public void dispatchInputEvent(InputEvent event) { 5825 Message msg = mHandler.obtainMessage(MSG_DISPATCH_INPUT_EVENT, event); 5826 msg.setAsynchronous(true); 5827 mHandler.sendMessage(msg); 5828 } 5829 5830 public void dispatchKeyFromIme(KeyEvent event) { 5831 Message msg = mHandler.obtainMessage(MSG_DISPATCH_KEY_FROM_IME, event); 5832 msg.setAsynchronous(true); 5833 mHandler.sendMessage(msg); 5834 } 5835 5836 public void dispatchUnhandledKey(KeyEvent event) { 5837 if ((event.getFlags() & KeyEvent.FLAG_FALLBACK) == 0) { 5838 final KeyCharacterMap kcm = event.getKeyCharacterMap(); 5839 final int keyCode = event.getKeyCode(); 5840 final int metaState = event.getMetaState(); 5841 5842 // Check for fallback actions specified by the key character map. 5843 KeyCharacterMap.FallbackAction fallbackAction = 5844 kcm.getFallbackAction(keyCode, metaState); 5845 if (fallbackAction != null) { 5846 final int flags = event.getFlags() | KeyEvent.FLAG_FALLBACK; 5847 KeyEvent fallbackEvent = KeyEvent.obtain( 5848 event.getDownTime(), event.getEventTime(), 5849 event.getAction(), fallbackAction.keyCode, 5850 event.getRepeatCount(), fallbackAction.metaState, 5851 event.getDeviceId(), event.getScanCode(), 5852 flags, event.getSource(), null); 5853 fallbackAction.recycle(); 5854 5855 dispatchInputEvent(fallbackEvent); 5856 } 5857 } 5858 } 5859 5860 public void dispatchAppVisibility(boolean visible) { 5861 Message msg = mHandler.obtainMessage(MSG_DISPATCH_APP_VISIBILITY); 5862 msg.arg1 = visible ? 1 : 0; 5863 mHandler.sendMessage(msg); 5864 } 5865 5866 public void dispatchScreenStateChange(boolean on) { 5867 Message msg = mHandler.obtainMessage(MSG_DISPATCH_SCREEN_STATE); 5868 msg.arg1 = on ? 1 : 0; 5869 mHandler.sendMessage(msg); 5870 } 5871 5872 public void dispatchGetNewSurface() { 5873 Message msg = mHandler.obtainMessage(MSG_DISPATCH_GET_NEW_SURFACE); 5874 mHandler.sendMessage(msg); 5875 } 5876 5877 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 5878 Message msg = Message.obtain(); 5879 msg.what = MSG_WINDOW_FOCUS_CHANGED; 5880 msg.arg1 = hasFocus ? 1 : 0; 5881 msg.arg2 = inTouchMode ? 1 : 0; 5882 mHandler.sendMessage(msg); 5883 } 5884 5885 public void dispatchCloseSystemDialogs(String reason) { 5886 Message msg = Message.obtain(); 5887 msg.what = MSG_CLOSE_SYSTEM_DIALOGS; 5888 msg.obj = reason; 5889 mHandler.sendMessage(msg); 5890 } 5891 5892 public void dispatchDragEvent(DragEvent event) { 5893 final int what; 5894 if (event.getAction() == DragEvent.ACTION_DRAG_LOCATION) { 5895 what = MSG_DISPATCH_DRAG_LOCATION_EVENT; 5896 mHandler.removeMessages(what); 5897 } else { 5898 what = MSG_DISPATCH_DRAG_EVENT; 5899 } 5900 Message msg = mHandler.obtainMessage(what, event); 5901 mHandler.sendMessage(msg); 5902 } 5903 5904 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 5905 int localValue, int localChanges) { 5906 SystemUiVisibilityInfo args = new SystemUiVisibilityInfo(); 5907 args.seq = seq; 5908 args.globalVisibility = globalVisibility; 5909 args.localValue = localValue; 5910 args.localChanges = localChanges; 5911 mHandler.sendMessage(mHandler.obtainMessage(MSG_DISPATCH_SYSTEM_UI_VISIBILITY, args)); 5912 } 5913 5914 public void dispatchDoneAnimating() { 5915 mHandler.sendEmptyMessage(MSG_DISPATCH_DONE_ANIMATING); 5916 } 5917 5918 public void dispatchCheckFocus() { 5919 if (!mHandler.hasMessages(MSG_CHECK_FOCUS)) { 5920 // This will result in a call to checkFocus() below. 5921 mHandler.sendEmptyMessage(MSG_CHECK_FOCUS); 5922 } 5923 } 5924 5925 /** 5926 * Post a callback to send a 5927 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 5928 * This event is send at most once every 5929 * {@link ViewConfiguration#getSendRecurringAccessibilityEventsInterval()}. 5930 */ 5931 private void postSendWindowContentChangedCallback(View source, int changeType) { 5932 if (mSendWindowContentChangedAccessibilityEvent == null) { 5933 mSendWindowContentChangedAccessibilityEvent = 5934 new SendWindowContentChangedAccessibilityEvent(); 5935 } 5936 mSendWindowContentChangedAccessibilityEvent.runOrPost(source, changeType); 5937 } 5938 5939 /** 5940 * Remove a posted callback to send a 5941 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 5942 */ 5943 private void removeSendWindowContentChangedCallback() { 5944 if (mSendWindowContentChangedAccessibilityEvent != null) { 5945 mHandler.removeCallbacks(mSendWindowContentChangedAccessibilityEvent); 5946 } 5947 } 5948 5949 @Override 5950 public boolean showContextMenuForChild(View originalView) { 5951 return false; 5952 } 5953 5954 @Override 5955 public ActionMode startActionModeForChild(View originalView, ActionMode.Callback callback) { 5956 return null; 5957 } 5958 5959 @Override 5960 public void createContextMenu(ContextMenu menu) { 5961 } 5962 5963 @Override 5964 public void childDrawableStateChanged(View child) { 5965 } 5966 5967 @Override 5968 public boolean requestSendAccessibilityEvent(View child, AccessibilityEvent event) { 5969 if (mView == null) { 5970 return false; 5971 } 5972 // Intercept accessibility focus events fired by virtual nodes to keep 5973 // track of accessibility focus position in such nodes. 5974 final int eventType = event.getEventType(); 5975 switch (eventType) { 5976 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUSED: { 5977 final long sourceNodeId = event.getSourceNodeId(); 5978 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 5979 sourceNodeId); 5980 View source = mView.findViewByAccessibilityId(accessibilityViewId); 5981 if (source != null) { 5982 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 5983 if (provider != null) { 5984 AccessibilityNodeInfo node = provider.createAccessibilityNodeInfo( 5985 AccessibilityNodeInfo.getVirtualDescendantId(sourceNodeId)); 5986 setAccessibilityFocus(source, node); 5987 } 5988 } 5989 } break; 5990 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUS_CLEARED: { 5991 final long sourceNodeId = event.getSourceNodeId(); 5992 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 5993 sourceNodeId); 5994 View source = mView.findViewByAccessibilityId(accessibilityViewId); 5995 if (source != null) { 5996 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 5997 if (provider != null) { 5998 setAccessibilityFocus(null, null); 5999 } 6000 } 6001 } break; 6002 } 6003 mAccessibilityManager.sendAccessibilityEvent(event); 6004 return true; 6005 } 6006 6007 @Override 6008 public void notifySubtreeAccessibilityStateChanged(View child, View source, int changeType) { 6009 postSendWindowContentChangedCallback(source, changeType); 6010 } 6011 6012 @Override 6013 public boolean canResolveLayoutDirection() { 6014 return true; 6015 } 6016 6017 @Override 6018 public boolean isLayoutDirectionResolved() { 6019 return true; 6020 } 6021 6022 @Override 6023 public int getLayoutDirection() { 6024 return View.LAYOUT_DIRECTION_RESOLVED_DEFAULT; 6025 } 6026 6027 @Override 6028 public boolean canResolveTextDirection() { 6029 return true; 6030 } 6031 6032 @Override 6033 public boolean isTextDirectionResolved() { 6034 return true; 6035 } 6036 6037 @Override 6038 public int getTextDirection() { 6039 return View.TEXT_DIRECTION_RESOLVED_DEFAULT; 6040 } 6041 6042 @Override 6043 public boolean canResolveTextAlignment() { 6044 return true; 6045 } 6046 6047 @Override 6048 public boolean isTextAlignmentResolved() { 6049 return true; 6050 } 6051 6052 @Override 6053 public int getTextAlignment() { 6054 return View.TEXT_ALIGNMENT_RESOLVED_DEFAULT; 6055 } 6056 6057 private View getCommonPredecessor(View first, View second) { 6058 if (mAttachInfo != null) { 6059 if (mTempHashSet == null) { 6060 mTempHashSet = new HashSet<View>(); 6061 } 6062 HashSet<View> seen = mTempHashSet; 6063 seen.clear(); 6064 View firstCurrent = first; 6065 while (firstCurrent != null) { 6066 seen.add(firstCurrent); 6067 ViewParent firstCurrentParent = firstCurrent.mParent; 6068 if (firstCurrentParent instanceof View) { 6069 firstCurrent = (View) firstCurrentParent; 6070 } else { 6071 firstCurrent = null; 6072 } 6073 } 6074 View secondCurrent = second; 6075 while (secondCurrent != null) { 6076 if (seen.contains(secondCurrent)) { 6077 seen.clear(); 6078 return secondCurrent; 6079 } 6080 ViewParent secondCurrentParent = secondCurrent.mParent; 6081 if (secondCurrentParent instanceof View) { 6082 secondCurrent = (View) secondCurrentParent; 6083 } else { 6084 secondCurrent = null; 6085 } 6086 } 6087 seen.clear(); 6088 } 6089 return null; 6090 } 6091 6092 void checkThread() { 6093 if (mThread != Thread.currentThread()) { 6094 throw new CalledFromWrongThreadException( 6095 "Only the original thread that created a view hierarchy can touch its views."); 6096 } 6097 } 6098 6099 @Override 6100 public void requestDisallowInterceptTouchEvent(boolean disallowIntercept) { 6101 // ViewAncestor never intercepts touch event, so this can be a no-op 6102 } 6103 6104 @Override 6105 public boolean requestChildRectangleOnScreen(View child, Rect rectangle, boolean immediate) { 6106 final boolean scrolled = scrollToRectOrFocus(rectangle, immediate); 6107 if (rectangle != null) { 6108 mTempRect.set(rectangle); 6109 mTempRect.offset(0, -mCurScrollY); 6110 mTempRect.offset(mAttachInfo.mWindowLeft, mAttachInfo.mWindowTop); 6111 try { 6112 mWindowSession.onRectangleOnScreenRequested(mWindow, mTempRect, immediate); 6113 } catch (RemoteException re) { 6114 /* ignore */ 6115 } 6116 } 6117 return scrolled; 6118 } 6119 6120 @Override 6121 public void childHasTransientStateChanged(View child, boolean hasTransientState) { 6122 // Do nothing. 6123 } 6124 6125 void changeCanvasOpacity(boolean opaque) { 6126 // TODO(romainguy): recreate Canvas (software or hardware) to reflect the opacity change. 6127 Log.d(TAG, "changeCanvasOpacity: opaque=" + opaque); 6128 } 6129 6130 class TakenSurfaceHolder extends BaseSurfaceHolder { 6131 @Override 6132 public boolean onAllowLockCanvas() { 6133 return mDrawingAllowed; 6134 } 6135 6136 @Override 6137 public void onRelayoutContainer() { 6138 // Not currently interesting -- from changing between fixed and layout size. 6139 } 6140 6141 @Override 6142 public void setFormat(int format) { 6143 ((RootViewSurfaceTaker)mView).setSurfaceFormat(format); 6144 } 6145 6146 @Override 6147 public void setType(int type) { 6148 ((RootViewSurfaceTaker)mView).setSurfaceType(type); 6149 } 6150 6151 @Override 6152 public void onUpdateSurface() { 6153 // We take care of format and type changes on our own. 6154 throw new IllegalStateException("Shouldn't be here"); 6155 } 6156 6157 @Override 6158 public boolean isCreating() { 6159 return mIsCreating; 6160 } 6161 6162 @Override 6163 public void setFixedSize(int width, int height) { 6164 throw new UnsupportedOperationException( 6165 "Currently only support sizing from layout"); 6166 } 6167 6168 @Override 6169 public void setKeepScreenOn(boolean screenOn) { 6170 ((RootViewSurfaceTaker)mView).setSurfaceKeepScreenOn(screenOn); 6171 } 6172 } 6173 6174 static class W extends IWindow.Stub { 6175 private final WeakReference<ViewRootImpl> mViewAncestor; 6176 private final IWindowSession mWindowSession; 6177 6178 W(ViewRootImpl viewAncestor) { 6179 mViewAncestor = new WeakReference<ViewRootImpl>(viewAncestor); 6180 mWindowSession = viewAncestor.mWindowSession; 6181 } 6182 6183 @Override 6184 public void resized(Rect frame, Rect overscanInsets, Rect contentInsets, 6185 Rect visibleInsets, boolean reportDraw, Configuration newConfig) { 6186 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6187 if (viewAncestor != null) { 6188 viewAncestor.dispatchResized(frame, overscanInsets, contentInsets, 6189 visibleInsets, reportDraw, newConfig); 6190 } 6191 } 6192 6193 @Override 6194 public void moved(int newX, int newY) { 6195 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6196 if (viewAncestor != null) { 6197 viewAncestor.dispatchMoved(newX, newY); 6198 } 6199 } 6200 6201 @Override 6202 public void dispatchAppVisibility(boolean visible) { 6203 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6204 if (viewAncestor != null) { 6205 viewAncestor.dispatchAppVisibility(visible); 6206 } 6207 } 6208 6209 @Override 6210 public void dispatchScreenState(boolean on) { 6211 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6212 if (viewAncestor != null) { 6213 viewAncestor.dispatchScreenStateChange(on); 6214 } 6215 } 6216 6217 @Override 6218 public void dispatchGetNewSurface() { 6219 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6220 if (viewAncestor != null) { 6221 viewAncestor.dispatchGetNewSurface(); 6222 } 6223 } 6224 6225 @Override 6226 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 6227 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6228 if (viewAncestor != null) { 6229 viewAncestor.windowFocusChanged(hasFocus, inTouchMode); 6230 } 6231 } 6232 6233 private static int checkCallingPermission(String permission) { 6234 try { 6235 return ActivityManagerNative.getDefault().checkPermission( 6236 permission, Binder.getCallingPid(), Binder.getCallingUid()); 6237 } catch (RemoteException e) { 6238 return PackageManager.PERMISSION_DENIED; 6239 } 6240 } 6241 6242 @Override 6243 public void executeCommand(String command, String parameters, ParcelFileDescriptor out) { 6244 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6245 if (viewAncestor != null) { 6246 final View view = viewAncestor.mView; 6247 if (view != null) { 6248 if (checkCallingPermission(Manifest.permission.DUMP) != 6249 PackageManager.PERMISSION_GRANTED) { 6250 throw new SecurityException("Insufficient permissions to invoke" 6251 + " executeCommand() from pid=" + Binder.getCallingPid() 6252 + ", uid=" + Binder.getCallingUid()); 6253 } 6254 6255 OutputStream clientStream = null; 6256 try { 6257 clientStream = new ParcelFileDescriptor.AutoCloseOutputStream(out); 6258 ViewDebug.dispatchCommand(view, command, parameters, clientStream); 6259 } catch (IOException e) { 6260 e.printStackTrace(); 6261 } finally { 6262 if (clientStream != null) { 6263 try { 6264 clientStream.close(); 6265 } catch (IOException e) { 6266 e.printStackTrace(); 6267 } 6268 } 6269 } 6270 } 6271 } 6272 } 6273 6274 @Override 6275 public void closeSystemDialogs(String reason) { 6276 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6277 if (viewAncestor != null) { 6278 viewAncestor.dispatchCloseSystemDialogs(reason); 6279 } 6280 } 6281 6282 @Override 6283 public void dispatchWallpaperOffsets(float x, float y, float xStep, float yStep, 6284 boolean sync) { 6285 if (sync) { 6286 try { 6287 mWindowSession.wallpaperOffsetsComplete(asBinder()); 6288 } catch (RemoteException e) { 6289 } 6290 } 6291 } 6292 6293 @Override 6294 public void dispatchWallpaperCommand(String action, int x, int y, 6295 int z, Bundle extras, boolean sync) { 6296 if (sync) { 6297 try { 6298 mWindowSession.wallpaperCommandComplete(asBinder(), null); 6299 } catch (RemoteException e) { 6300 } 6301 } 6302 } 6303 6304 /* Drag/drop */ 6305 @Override 6306 public void dispatchDragEvent(DragEvent event) { 6307 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6308 if (viewAncestor != null) { 6309 viewAncestor.dispatchDragEvent(event); 6310 } 6311 } 6312 6313 @Override 6314 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 6315 int localValue, int localChanges) { 6316 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6317 if (viewAncestor != null) { 6318 viewAncestor.dispatchSystemUiVisibilityChanged(seq, globalVisibility, 6319 localValue, localChanges); 6320 } 6321 } 6322 6323 @Override 6324 public void doneAnimating() { 6325 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6326 if (viewAncestor != null) { 6327 viewAncestor.dispatchDoneAnimating(); 6328 } 6329 } 6330 } 6331 6332 public static final class CalledFromWrongThreadException extends AndroidRuntimeException { 6333 public CalledFromWrongThreadException(String msg) { 6334 super(msg); 6335 } 6336 } 6337 6338 private final SurfaceHolder mHolder = new SurfaceHolder() { 6339 // we only need a SurfaceHolder for opengl. it would be nice 6340 // to implement everything else though, especially the callback 6341 // support (opengl doesn't make use of it right now, but eventually 6342 // will). 6343 @Override 6344 public Surface getSurface() { 6345 return mSurface; 6346 } 6347 6348 @Override 6349 public boolean isCreating() { 6350 return false; 6351 } 6352 6353 @Override 6354 public void addCallback(Callback callback) { 6355 } 6356 6357 @Override 6358 public void removeCallback(Callback callback) { 6359 } 6360 6361 @Override 6362 public void setFixedSize(int width, int height) { 6363 } 6364 6365 @Override 6366 public void setSizeFromLayout() { 6367 } 6368 6369 @Override 6370 public void setFormat(int format) { 6371 } 6372 6373 @Override 6374 public void setType(int type) { 6375 } 6376 6377 @Override 6378 public void setKeepScreenOn(boolean screenOn) { 6379 } 6380 6381 @Override 6382 public Canvas lockCanvas() { 6383 return null; 6384 } 6385 6386 @Override 6387 public Canvas lockCanvas(Rect dirty) { 6388 return null; 6389 } 6390 6391 @Override 6392 public void unlockCanvasAndPost(Canvas canvas) { 6393 } 6394 @Override 6395 public Rect getSurfaceFrame() { 6396 return null; 6397 } 6398 }; 6399 6400 static RunQueue getRunQueue() { 6401 RunQueue rq = sRunQueues.get(); 6402 if (rq != null) { 6403 return rq; 6404 } 6405 rq = new RunQueue(); 6406 sRunQueues.set(rq); 6407 return rq; 6408 } 6409 6410 /** 6411 * The run queue is used to enqueue pending work from Views when no Handler is 6412 * attached. The work is executed during the next call to performTraversals on 6413 * the thread. 6414 * @hide 6415 */ 6416 static final class RunQueue { 6417 private final ArrayList<HandlerAction> mActions = new ArrayList<HandlerAction>(); 6418 6419 void post(Runnable action) { 6420 postDelayed(action, 0); 6421 } 6422 6423 void postDelayed(Runnable action, long delayMillis) { 6424 HandlerAction handlerAction = new HandlerAction(); 6425 handlerAction.action = action; 6426 handlerAction.delay = delayMillis; 6427 6428 synchronized (mActions) { 6429 mActions.add(handlerAction); 6430 } 6431 } 6432 6433 void removeCallbacks(Runnable action) { 6434 final HandlerAction handlerAction = new HandlerAction(); 6435 handlerAction.action = action; 6436 6437 synchronized (mActions) { 6438 final ArrayList<HandlerAction> actions = mActions; 6439 6440 while (actions.remove(handlerAction)) { 6441 // Keep going 6442 } 6443 } 6444 } 6445 6446 void executeActions(Handler handler) { 6447 synchronized (mActions) { 6448 final ArrayList<HandlerAction> actions = mActions; 6449 final int count = actions.size(); 6450 6451 for (int i = 0; i < count; i++) { 6452 final HandlerAction handlerAction = actions.get(i); 6453 handler.postDelayed(handlerAction.action, handlerAction.delay); 6454 } 6455 6456 actions.clear(); 6457 } 6458 } 6459 6460 private static class HandlerAction { 6461 Runnable action; 6462 long delay; 6463 6464 @Override 6465 public boolean equals(Object o) { 6466 if (this == o) return true; 6467 if (o == null || getClass() != o.getClass()) return false; 6468 6469 HandlerAction that = (HandlerAction) o; 6470 return !(action != null ? !action.equals(that.action) : that.action != null); 6471 6472 } 6473 6474 @Override 6475 public int hashCode() { 6476 int result = action != null ? action.hashCode() : 0; 6477 result = 31 * result + (int) (delay ^ (delay >>> 32)); 6478 return result; 6479 } 6480 } 6481 } 6482 6483 /** 6484 * Class for managing the accessibility interaction connection 6485 * based on the global accessibility state. 6486 */ 6487 final class AccessibilityInteractionConnectionManager 6488 implements AccessibilityStateChangeListener { 6489 @Override 6490 public void onAccessibilityStateChanged(boolean enabled) { 6491 if (enabled) { 6492 ensureConnection(); 6493 if (mAttachInfo != null && mAttachInfo.mHasWindowFocus) { 6494 mView.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 6495 View focusedView = mView.findFocus(); 6496 if (focusedView != null && focusedView != mView) { 6497 focusedView.sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_FOCUSED); 6498 } 6499 } 6500 } else { 6501 ensureNoConnection(); 6502 mHandler.obtainMessage(MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST).sendToTarget(); 6503 } 6504 } 6505 6506 public void ensureConnection() { 6507 if (mAttachInfo != null) { 6508 final boolean registered = 6509 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED; 6510 if (!registered) { 6511 mAttachInfo.mAccessibilityWindowId = 6512 mAccessibilityManager.addAccessibilityInteractionConnection(mWindow, 6513 new AccessibilityInteractionConnection(ViewRootImpl.this)); 6514 } 6515 } 6516 } 6517 6518 public void ensureNoConnection() { 6519 final boolean registered = 6520 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED; 6521 if (registered) { 6522 mAttachInfo.mAccessibilityWindowId = AccessibilityNodeInfo.UNDEFINED; 6523 mAccessibilityManager.removeAccessibilityInteractionConnection(mWindow); 6524 } 6525 } 6526 } 6527 6528 /** 6529 * This class is an interface this ViewAncestor provides to the 6530 * AccessibilityManagerService to the latter can interact with 6531 * the view hierarchy in this ViewAncestor. 6532 */ 6533 static final class AccessibilityInteractionConnection 6534 extends IAccessibilityInteractionConnection.Stub { 6535 private final WeakReference<ViewRootImpl> mViewRootImpl; 6536 6537 AccessibilityInteractionConnection(ViewRootImpl viewRootImpl) { 6538 mViewRootImpl = new WeakReference<ViewRootImpl>(viewRootImpl); 6539 } 6540 6541 @Override 6542 public void findAccessibilityNodeInfoByAccessibilityId(long accessibilityNodeId, 6543 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 6544 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6545 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6546 if (viewRootImpl != null && viewRootImpl.mView != null) { 6547 viewRootImpl.getAccessibilityInteractionController() 6548 .findAccessibilityNodeInfoByAccessibilityIdClientThread(accessibilityNodeId, 6549 interactionId, callback, flags, interrogatingPid, interrogatingTid, 6550 spec); 6551 } else { 6552 // We cannot make the call and notify the caller so it does not wait. 6553 try { 6554 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 6555 } catch (RemoteException re) { 6556 /* best effort - ignore */ 6557 } 6558 } 6559 } 6560 6561 @Override 6562 public void performAccessibilityAction(long accessibilityNodeId, int action, 6563 Bundle arguments, int interactionId, 6564 IAccessibilityInteractionConnectionCallback callback, int flags, 6565 int interogatingPid, long interrogatingTid) { 6566 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6567 if (viewRootImpl != null && viewRootImpl.mView != null) { 6568 viewRootImpl.getAccessibilityInteractionController() 6569 .performAccessibilityActionClientThread(accessibilityNodeId, action, arguments, 6570 interactionId, callback, flags, interogatingPid, interrogatingTid); 6571 } else { 6572 // We cannot make the call and notify the caller so it does not wait. 6573 try { 6574 callback.setPerformAccessibilityActionResult(false, interactionId); 6575 } catch (RemoteException re) { 6576 /* best effort - ignore */ 6577 } 6578 } 6579 } 6580 6581 @Override 6582 public void findAccessibilityNodeInfosByViewId(long accessibilityNodeId, 6583 String viewId, int interactionId, 6584 IAccessibilityInteractionConnectionCallback callback, int flags, 6585 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6586 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6587 if (viewRootImpl != null && viewRootImpl.mView != null) { 6588 viewRootImpl.getAccessibilityInteractionController() 6589 .findAccessibilityNodeInfosByViewIdClientThread(accessibilityNodeId, 6590 viewId, interactionId, callback, flags, interrogatingPid, 6591 interrogatingTid, spec); 6592 } else { 6593 // We cannot make the call and notify the caller so it does not wait. 6594 try { 6595 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6596 } catch (RemoteException re) { 6597 /* best effort - ignore */ 6598 } 6599 } 6600 } 6601 6602 @Override 6603 public void findAccessibilityNodeInfosByText(long accessibilityNodeId, String text, 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 .findAccessibilityNodeInfosByTextClientThread(accessibilityNodeId, text, 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 findFocus(long accessibilityNodeId, int focusType, int interactionId, 6624 IAccessibilityInteractionConnectionCallback callback, int flags, 6625 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6626 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6627 if (viewRootImpl != null && viewRootImpl.mView != null) { 6628 viewRootImpl.getAccessibilityInteractionController() 6629 .findFocusClientThread(accessibilityNodeId, focusType, interactionId, callback, 6630 flags, interrogatingPid, interrogatingTid, spec); 6631 } else { 6632 // We cannot make the call and notify the caller so it does not wait. 6633 try { 6634 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6635 } catch (RemoteException re) { 6636 /* best effort - ignore */ 6637 } 6638 } 6639 } 6640 6641 @Override 6642 public void focusSearch(long accessibilityNodeId, int direction, int interactionId, 6643 IAccessibilityInteractionConnectionCallback callback, int flags, 6644 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6645 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6646 if (viewRootImpl != null && viewRootImpl.mView != null) { 6647 viewRootImpl.getAccessibilityInteractionController() 6648 .focusSearchClientThread(accessibilityNodeId, direction, interactionId, 6649 callback, flags, interrogatingPid, interrogatingTid, spec); 6650 } else { 6651 // We cannot make the call and notify the caller so it does not wait. 6652 try { 6653 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6654 } catch (RemoteException re) { 6655 /* best effort - ignore */ 6656 } 6657 } 6658 } 6659 } 6660 6661 private class SendWindowContentChangedAccessibilityEvent implements Runnable { 6662 private int mChangeTypes = 0; 6663 6664 public View mSource; 6665 public long mLastEventTimeMillis; 6666 6667 @Override 6668 public void run() { 6669 // The accessibility may be turned off while we were waiting so check again. 6670 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 6671 mLastEventTimeMillis = SystemClock.uptimeMillis(); 6672 AccessibilityEvent event = AccessibilityEvent.obtain(); 6673 event.setEventType(AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED); 6674 event.setContentChangeTypes(mChangeTypes); 6675 mSource.sendAccessibilityEventUnchecked(event); 6676 } else { 6677 mLastEventTimeMillis = 0; 6678 } 6679 // In any case reset to initial state. 6680 mSource.resetSubtreeAccessibilityStateChanged(); 6681 mSource = null; 6682 mChangeTypes = 0; 6683 } 6684 6685 public void runOrPost(View source, int changeType) { 6686 if (mSource != null) { 6687 // If there is no common predecessor, then mSource points to 6688 // a removed view, hence in this case always prefer the source. 6689 View predecessor = getCommonPredecessor(mSource, source); 6690 mSource = (predecessor != null) ? predecessor : source; 6691 mChangeTypes |= changeType; 6692 return; 6693 } 6694 mSource = source; 6695 mChangeTypes = changeType; 6696 final long timeSinceLastMillis = SystemClock.uptimeMillis() - mLastEventTimeMillis; 6697 final long minEventIntevalMillis = 6698 ViewConfiguration.getSendRecurringAccessibilityEventsInterval(); 6699 if (timeSinceLastMillis >= minEventIntevalMillis) { 6700 mSource.removeCallbacks(this); 6701 run(); 6702 } else { 6703 mSource.postDelayed(this, minEventIntevalMillis - timeSinceLastMillis); 6704 } 6705 } 6706 } 6707 } 6708