ViewRootImpl.java revision df4943d5e08360223e2b8c16d4b578a229cad411
1/* 2 * Copyright (C) 2006 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.view; 18 19import android.Manifest; 20import android.animation.LayoutTransition; 21import android.app.ActivityManagerNative; 22import android.content.ClipDescription; 23import android.content.ComponentCallbacks; 24import android.content.Context; 25import android.content.pm.PackageManager; 26import android.content.res.CompatibilityInfo; 27import android.content.res.Configuration; 28import android.content.res.Resources; 29import android.graphics.Canvas; 30import android.graphics.Matrix; 31import android.graphics.Paint; 32import android.graphics.PixelFormat; 33import android.graphics.Point; 34import android.graphics.PointF; 35import android.graphics.PorterDuff; 36import android.graphics.Rect; 37import android.graphics.Region; 38import android.graphics.drawable.Drawable; 39import android.hardware.display.DisplayManager; 40import android.hardware.display.DisplayManager.DisplayListener; 41import android.media.AudioManager; 42import android.os.Binder; 43import android.os.Build; 44import android.os.Bundle; 45import android.os.Debug; 46import android.os.Handler; 47import android.os.Looper; 48import android.os.Message; 49import android.os.ParcelFileDescriptor; 50import android.os.PowerManager; 51import android.os.Process; 52import android.os.RemoteException; 53import android.os.SystemClock; 54import android.os.SystemProperties; 55import android.os.Trace; 56import android.util.AndroidRuntimeException; 57import android.util.DisplayMetrics; 58import android.util.Log; 59import android.util.Slog; 60import android.util.TimeUtils; 61import android.util.TypedValue; 62import android.view.Surface.OutOfResourcesException; 63import android.view.View.AttachInfo; 64import android.view.View.MeasureSpec; 65import android.view.accessibility.AccessibilityEvent; 66import android.view.accessibility.AccessibilityManager; 67import android.view.accessibility.AccessibilityManager.AccessibilityStateChangeListener; 68import android.view.accessibility.AccessibilityManager.HighTextContrastChangeListener; 69import android.view.accessibility.AccessibilityNodeInfo; 70import android.view.accessibility.AccessibilityNodeProvider; 71import android.view.accessibility.IAccessibilityInteractionConnection; 72import android.view.accessibility.IAccessibilityInteractionConnectionCallback; 73import android.view.animation.AccelerateDecelerateInterpolator; 74import android.view.animation.Interpolator; 75import android.view.inputmethod.InputConnection; 76import android.view.inputmethod.InputMethodManager; 77import android.widget.Scroller; 78 79import com.android.internal.R; 80import com.android.internal.os.SomeArgs; 81import com.android.internal.view.BaseSurfaceHolder; 82import com.android.internal.view.RootViewSurfaceTaker; 83 84import java.io.FileDescriptor; 85import java.io.IOException; 86import java.io.OutputStream; 87import java.io.PrintWriter; 88import java.lang.ref.WeakReference; 89import java.util.ArrayList; 90import java.util.HashSet; 91 92/** 93 * The top of a view hierarchy, implementing the needed protocol between View 94 * and the WindowManager. This is for the most part an internal implementation 95 * detail of {@link WindowManagerGlobal}. 96 * 97 * {@hide} 98 */ 99@SuppressWarnings({"EmptyCatchBlock", "PointlessBooleanExpression"}) 100public final class ViewRootImpl implements ViewParent, 101 View.AttachInfo.Callbacks, HardwareRenderer.HardwareDrawCallbacks { 102 private static final String TAG = "ViewRootImpl"; 103 private static final boolean DBG = false; 104 private static final boolean LOCAL_LOGV = false; 105 /** @noinspection PointlessBooleanExpression*/ 106 private static final boolean DEBUG_DRAW = false || LOCAL_LOGV; 107 private static final boolean DEBUG_LAYOUT = false || LOCAL_LOGV; 108 private static final boolean DEBUG_DIALOG = false || LOCAL_LOGV; 109 private static final boolean DEBUG_INPUT_RESIZE = false || LOCAL_LOGV; 110 private static final boolean DEBUG_ORIENTATION = false || LOCAL_LOGV; 111 private static final boolean DEBUG_TRACKBALL = false || LOCAL_LOGV; 112 private static final boolean DEBUG_IMF = false || LOCAL_LOGV; 113 private static final boolean DEBUG_CONFIGURATION = false || LOCAL_LOGV; 114 private static final boolean DEBUG_FPS = false; 115 private static final boolean DEBUG_INPUT_STAGES = false || LOCAL_LOGV; 116 117 /** 118 * Set this system property to true to force the view hierarchy to render 119 * at 60 Hz. This can be used to measure the potential framerate. 120 */ 121 private static final String PROPERTY_PROFILE_RENDERING = "viewroot.profile_rendering"; 122 private static final String PROPERTY_MEDIA_DISABLED = "config.disable_media"; 123 124 // property used by emulator to determine display shape 125 public static final String PROPERTY_EMULATOR_CIRCULAR = "ro.emulator.circular"; 126 127 /** 128 * Maximum time we allow the user to roll the trackball enough to generate 129 * a key event, before resetting the counters. 130 */ 131 static final int MAX_TRACKBALL_DELAY = 250; 132 133 static final ThreadLocal<RunQueue> sRunQueues = new ThreadLocal<RunQueue>(); 134 135 static final ArrayList<Runnable> sFirstDrawHandlers = new ArrayList<Runnable>(); 136 static boolean sFirstDrawComplete = false; 137 138 static final ArrayList<ComponentCallbacks> sConfigCallbacks 139 = new ArrayList<ComponentCallbacks>(); 140 141 final Context mContext; 142 final IWindowSession mWindowSession; 143 final Display mDisplay; 144 final DisplayManager mDisplayManager; 145 final String mBasePackageName; 146 147 final int[] mTmpLocation = new int[2]; 148 149 final TypedValue mTmpValue = new TypedValue(); 150 151 final Thread mThread; 152 153 final WindowLeaked mLocation; 154 155 final WindowManager.LayoutParams mWindowAttributes = new WindowManager.LayoutParams(); 156 157 final W mWindow; 158 159 final int mTargetSdkVersion; 160 161 int mSeq; 162 163 View mView; 164 165 View mAccessibilityFocusedHost; 166 AccessibilityNodeInfo mAccessibilityFocusedVirtualView; 167 168 int mViewVisibility; 169 boolean mAppVisible = true; 170 int mOrigWindowType = -1; 171 172 // Set to true if the owner of this window is in the stopped state, 173 // so the window should no longer be active. 174 boolean mStopped = false; 175 176 boolean mLastInCompatMode = false; 177 178 SurfaceHolder.Callback2 mSurfaceHolderCallback; 179 BaseSurfaceHolder mSurfaceHolder; 180 boolean mIsCreating; 181 boolean mDrawingAllowed; 182 183 final Region mTransparentRegion; 184 final Region mPreviousTransparentRegion; 185 186 int mWidth; 187 int mHeight; 188 Rect mDirty; 189 boolean mIsAnimating; 190 191 CompatibilityInfo.Translator mTranslator; 192 193 final View.AttachInfo mAttachInfo; 194 InputChannel mInputChannel; 195 InputQueue.Callback mInputQueueCallback; 196 InputQueue mInputQueue; 197 FallbackEventHandler mFallbackEventHandler; 198 Choreographer mChoreographer; 199 200 final Rect mTempRect; // used in the transaction to not thrash the heap. 201 final Rect mVisRect; // used to retrieve visible rect of focused view. 202 203 boolean mTraversalScheduled; 204 int mTraversalBarrier; 205 boolean mWillDrawSoon; 206 /** Set to true while in performTraversals for detecting when die(true) is called from internal 207 * callbacks such as onMeasure, onPreDraw, onDraw and deferring doDie() until later. */ 208 boolean mIsInTraversal; 209 boolean mApplyInsetsRequested; 210 boolean mLayoutRequested; 211 boolean mFirst; 212 boolean mReportNextDraw; 213 boolean mFullRedrawNeeded; 214 boolean mNewSurfaceNeeded; 215 boolean mHasHadWindowFocus; 216 boolean mLastWasImTarget; 217 boolean mWindowsAnimating; 218 boolean mDrawDuringWindowsAnimating; 219 boolean mIsDrawing; 220 int mLastSystemUiVisibility; 221 int mClientWindowLayoutFlags; 222 boolean mLastOverscanRequested; 223 224 // Pool of queued input events. 225 private static final int MAX_QUEUED_INPUT_EVENT_POOL_SIZE = 10; 226 private QueuedInputEvent mQueuedInputEventPool; 227 private int mQueuedInputEventPoolSize; 228 229 /* Input event queue. 230 * Pending input events are input events waiting to be delivered to the input stages 231 * and handled by the application. 232 */ 233 QueuedInputEvent mPendingInputEventHead; 234 QueuedInputEvent mPendingInputEventTail; 235 int mPendingInputEventCount; 236 boolean mProcessInputEventsScheduled; 237 boolean mUnbufferedInputDispatch; 238 String mPendingInputEventQueueLengthCounterName = "pq"; 239 240 InputStage mFirstInputStage; 241 InputStage mFirstPostImeInputStage; 242 InputStage mSyntheticInputStage; 243 244 boolean mWindowAttributesChanged = false; 245 int mWindowAttributesChangesFlag = 0; 246 247 // These can be accessed by any thread, must be protected with a lock. 248 // Surface can never be reassigned or cleared (use Surface.clear()). 249 final Surface mSurface = new Surface(); 250 251 boolean mAdded; 252 boolean mAddedTouchMode; 253 254 final DisplayAdjustments mDisplayAdjustments; 255 256 // These are accessed by multiple threads. 257 final Rect mWinFrame; // frame given by window manager. 258 259 final Rect mPendingOverscanInsets = new Rect(); 260 final Rect mPendingVisibleInsets = new Rect(); 261 final Rect mPendingStableInsets = new Rect(); 262 final Rect mPendingContentInsets = new Rect(); 263 final ViewTreeObserver.InternalInsetsInfo mLastGivenInsets 264 = new ViewTreeObserver.InternalInsetsInfo(); 265 266 final Rect mDispatchContentInsets = new Rect(); 267 final Rect mDispatchStableInsets = new Rect(); 268 269 final Configuration mLastConfiguration = new Configuration(); 270 final Configuration mPendingConfiguration = new Configuration(); 271 272 boolean mScrollMayChange; 273 int mSoftInputMode; 274 WeakReference<View> mLastScrolledFocus; 275 int mScrollY; 276 int mCurScrollY; 277 Scroller mScroller; 278 HardwareLayer mResizeBuffer; 279 long mResizeBufferStartTime; 280 int mResizeBufferDuration; 281 // Used to block the creation of the ResizeBuffer due to invalidations in 282 // the previous DisplayList tree that must prevent re-execution. 283 // Currently this means a functor was detached. 284 boolean mBlockResizeBuffer; 285 static final Interpolator mResizeInterpolator = new AccelerateDecelerateInterpolator(); 286 private ArrayList<LayoutTransition> mPendingTransitions; 287 288 final ViewConfiguration mViewConfiguration; 289 290 /* Drag/drop */ 291 ClipDescription mDragDescription; 292 View mCurrentDragView; 293 volatile Object mLocalDragState; 294 final PointF mDragPoint = new PointF(); 295 final PointF mLastTouchPoint = new PointF(); 296 297 private boolean mProfileRendering; 298 private Choreographer.FrameCallback mRenderProfiler; 299 private boolean mRenderProfilingEnabled; 300 301 private boolean mMediaDisabled; 302 303 // Variables to track frames per second, enabled via DEBUG_FPS flag 304 private long mFpsStartTime = -1; 305 private long mFpsPrevTime = -1; 306 private int mFpsNumFrames; 307 308 /** 309 * see {@link #playSoundEffect(int)} 310 */ 311 AudioManager mAudioManager; 312 313 final AccessibilityManager mAccessibilityManager; 314 315 AccessibilityInteractionController mAccessibilityInteractionController; 316 317 AccessibilityInteractionConnectionManager mAccessibilityInteractionConnectionManager; 318 HighContrastTextManager mHighContrastTextManager; 319 320 SendWindowContentChangedAccessibilityEvent mSendWindowContentChangedAccessibilityEvent; 321 322 HashSet<View> mTempHashSet; 323 324 private final int mDensity; 325 private final int mNoncompatDensity; 326 327 private boolean mInLayout = false; 328 ArrayList<View> mLayoutRequesters = new ArrayList<View>(); 329 boolean mHandlingLayoutInLayoutRequest = false; 330 331 private int mViewLayoutDirectionInitial; 332 333 /** Set to true once doDie() has been called. */ 334 private boolean mRemoved; 335 336 private boolean mIsEmulator; 337 private boolean mIsCircularEmulator; 338 private final boolean mWindowIsRound; 339 340 /** 341 * Consistency verifier for debugging purposes. 342 */ 343 protected final InputEventConsistencyVerifier mInputEventConsistencyVerifier = 344 InputEventConsistencyVerifier.isInstrumentationEnabled() ? 345 new InputEventConsistencyVerifier(this, 0) : null; 346 347 static final class SystemUiVisibilityInfo { 348 int seq; 349 int globalVisibility; 350 int localValue; 351 int localChanges; 352 } 353 354 public ViewRootImpl(Context context, Display display) { 355 mContext = context; 356 mWindowSession = WindowManagerGlobal.getWindowSession(); 357 mDisplay = display; 358 mBasePackageName = context.getBasePackageName(); 359 360 mDisplayAdjustments = display.getDisplayAdjustments(); 361 362 mThread = Thread.currentThread(); 363 mLocation = new WindowLeaked(null); 364 mLocation.fillInStackTrace(); 365 mWidth = -1; 366 mHeight = -1; 367 mDirty = new Rect(); 368 mTempRect = new Rect(); 369 mVisRect = new Rect(); 370 mWinFrame = new Rect(); 371 mWindow = new W(this); 372 mTargetSdkVersion = context.getApplicationInfo().targetSdkVersion; 373 mViewVisibility = View.GONE; 374 mTransparentRegion = new Region(); 375 mPreviousTransparentRegion = new Region(); 376 mFirst = true; // true for the first time the view is added 377 mAdded = false; 378 mAttachInfo = new View.AttachInfo(mWindowSession, mWindow, display, this, mHandler, this); 379 mAccessibilityManager = AccessibilityManager.getInstance(context); 380 mAccessibilityInteractionConnectionManager = 381 new AccessibilityInteractionConnectionManager(); 382 mAccessibilityManager.addAccessibilityStateChangeListener( 383 mAccessibilityInteractionConnectionManager); 384 mHighContrastTextManager = new HighContrastTextManager(); 385 mAccessibilityManager.addHighTextContrastStateChangeListener( 386 mHighContrastTextManager); 387 mViewConfiguration = ViewConfiguration.get(context); 388 mDensity = context.getResources().getDisplayMetrics().densityDpi; 389 mNoncompatDensity = context.getResources().getDisplayMetrics().noncompatDensityDpi; 390 mFallbackEventHandler = new PhoneFallbackEventHandler(context); 391 mChoreographer = Choreographer.getInstance(); 392 mDisplayManager = (DisplayManager)context.getSystemService(Context.DISPLAY_SERVICE); 393 loadSystemProperties(); 394 mWindowIsRound = context.getResources().getBoolean( 395 com.android.internal.R.bool.config_windowIsRound); 396 } 397 398 public static void addFirstDrawHandler(Runnable callback) { 399 synchronized (sFirstDrawHandlers) { 400 if (!sFirstDrawComplete) { 401 sFirstDrawHandlers.add(callback); 402 } 403 } 404 } 405 406 public static void addConfigCallback(ComponentCallbacks callback) { 407 synchronized (sConfigCallbacks) { 408 sConfigCallbacks.add(callback); 409 } 410 } 411 412 // FIXME for perf testing only 413 private boolean mProfile = false; 414 415 /** 416 * Call this to profile the next traversal call. 417 * FIXME for perf testing only. Remove eventually 418 */ 419 public void profile() { 420 mProfile = true; 421 } 422 423 /** 424 * Indicates whether we are in touch mode. Calling this method triggers an IPC 425 * call and should be avoided whenever possible. 426 * 427 * @return True, if the device is in touch mode, false otherwise. 428 * 429 * @hide 430 */ 431 static boolean isInTouchMode() { 432 IWindowSession windowSession = WindowManagerGlobal.peekWindowSession(); 433 if (windowSession != null) { 434 try { 435 return windowSession.getInTouchMode(); 436 } catch (RemoteException e) { 437 } 438 } 439 return false; 440 } 441 442 /** 443 * We have one child 444 */ 445 public void setView(View view, WindowManager.LayoutParams attrs, View panelParentView) { 446 synchronized (this) { 447 if (mView == null) { 448 mView = view; 449 450 mAttachInfo.mDisplayState = mDisplay.getState(); 451 mDisplayManager.registerDisplayListener(mDisplayListener, mHandler); 452 453 mViewLayoutDirectionInitial = mView.getRawLayoutDirection(); 454 mFallbackEventHandler.setView(view); 455 mWindowAttributes.copyFrom(attrs); 456 if (mWindowAttributes.packageName == null) { 457 mWindowAttributes.packageName = mBasePackageName; 458 } 459 attrs = mWindowAttributes; 460 // Keep track of the actual window flags supplied by the client. 461 mClientWindowLayoutFlags = attrs.flags; 462 463 setAccessibilityFocus(null, null); 464 465 if (view instanceof RootViewSurfaceTaker) { 466 mSurfaceHolderCallback = 467 ((RootViewSurfaceTaker)view).willYouTakeTheSurface(); 468 if (mSurfaceHolderCallback != null) { 469 mSurfaceHolder = new TakenSurfaceHolder(); 470 mSurfaceHolder.setFormat(PixelFormat.UNKNOWN); 471 } 472 } 473 474 // Compute surface insets required to draw at specified Z value. 475 // TODO: Use real shadow insets for a constant max Z. 476 if (!attrs.hasManualSurfaceInsets) { 477 final int surfaceInset = (int) Math.ceil(view.getZ() * 2); 478 attrs.surfaceInsets.set(surfaceInset, surfaceInset, surfaceInset, surfaceInset); 479 } 480 481 CompatibilityInfo compatibilityInfo = mDisplayAdjustments.getCompatibilityInfo(); 482 mTranslator = compatibilityInfo.getTranslator(); 483 484 // If the application owns the surface, don't enable hardware acceleration 485 if (mSurfaceHolder == null) { 486 enableHardwareAcceleration(attrs); 487 } 488 489 boolean restore = false; 490 if (mTranslator != null) { 491 mSurface.setCompatibilityTranslator(mTranslator); 492 restore = true; 493 attrs.backup(); 494 mTranslator.translateWindowLayout(attrs); 495 } 496 if (DEBUG_LAYOUT) Log.d(TAG, "WindowLayout in setView:" + attrs); 497 498 if (!compatibilityInfo.supportsScreen()) { 499 attrs.privateFlags |= WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 500 mLastInCompatMode = true; 501 } 502 503 mSoftInputMode = attrs.softInputMode; 504 mWindowAttributesChanged = true; 505 mWindowAttributesChangesFlag = WindowManager.LayoutParams.EVERYTHING_CHANGED; 506 mAttachInfo.mRootView = view; 507 mAttachInfo.mScalingRequired = mTranslator != null; 508 mAttachInfo.mApplicationScale = 509 mTranslator == null ? 1.0f : mTranslator.applicationScale; 510 if (panelParentView != null) { 511 mAttachInfo.mPanelParentWindowToken 512 = panelParentView.getApplicationWindowToken(); 513 } 514 mAdded = true; 515 int res; /* = WindowManagerImpl.ADD_OKAY; */ 516 517 // Schedule the first layout -before- adding to the window 518 // manager, to make sure we do the relayout before receiving 519 // any other events from the system. 520 requestLayout(); 521 if ((mWindowAttributes.inputFeatures 522 & WindowManager.LayoutParams.INPUT_FEATURE_NO_INPUT_CHANNEL) == 0) { 523 mInputChannel = new InputChannel(); 524 } 525 try { 526 mOrigWindowType = mWindowAttributes.type; 527 mAttachInfo.mRecomputeGlobalAttributes = true; 528 collectViewAttributes(); 529 res = mWindowSession.addToDisplay(mWindow, mSeq, mWindowAttributes, 530 getHostVisibility(), mDisplay.getDisplayId(), 531 mAttachInfo.mContentInsets, mAttachInfo.mStableInsets, mInputChannel); 532 } catch (RemoteException e) { 533 mAdded = false; 534 mView = null; 535 mAttachInfo.mRootView = null; 536 mInputChannel = null; 537 mFallbackEventHandler.setView(null); 538 unscheduleTraversals(); 539 setAccessibilityFocus(null, null); 540 throw new RuntimeException("Adding window failed", e); 541 } finally { 542 if (restore) { 543 attrs.restore(); 544 } 545 } 546 547 if (mTranslator != null) { 548 mTranslator.translateRectInScreenToAppWindow(mAttachInfo.mContentInsets); 549 } 550 mPendingOverscanInsets.set(0, 0, 0, 0); 551 mPendingContentInsets.set(mAttachInfo.mContentInsets); 552 mPendingStableInsets.set(mAttachInfo.mStableInsets); 553 mPendingVisibleInsets.set(0, 0, 0, 0); 554 if (DEBUG_LAYOUT) Log.v(TAG, "Added window " + mWindow); 555 if (res < WindowManagerGlobal.ADD_OKAY) { 556 mAttachInfo.mRootView = null; 557 mAdded = false; 558 mFallbackEventHandler.setView(null); 559 unscheduleTraversals(); 560 setAccessibilityFocus(null, null); 561 switch (res) { 562 case WindowManagerGlobal.ADD_BAD_APP_TOKEN: 563 case WindowManagerGlobal.ADD_BAD_SUBWINDOW_TOKEN: 564 throw new WindowManager.BadTokenException( 565 "Unable to add window -- token " + attrs.token 566 + " is not valid; is your activity running?"); 567 case WindowManagerGlobal.ADD_NOT_APP_TOKEN: 568 throw new WindowManager.BadTokenException( 569 "Unable to add window -- token " + attrs.token 570 + " is not for an application"); 571 case WindowManagerGlobal.ADD_APP_EXITING: 572 throw new WindowManager.BadTokenException( 573 "Unable to add window -- app for token " + attrs.token 574 + " is exiting"); 575 case WindowManagerGlobal.ADD_DUPLICATE_ADD: 576 throw new WindowManager.BadTokenException( 577 "Unable to add window -- window " + mWindow 578 + " has already been added"); 579 case WindowManagerGlobal.ADD_STARTING_NOT_NEEDED: 580 // Silently ignore -- we would have just removed it 581 // right away, anyway. 582 return; 583 case WindowManagerGlobal.ADD_MULTIPLE_SINGLETON: 584 throw new WindowManager.BadTokenException( 585 "Unable to add window " + mWindow + 586 " -- another window of this type already exists"); 587 case WindowManagerGlobal.ADD_PERMISSION_DENIED: 588 throw new WindowManager.BadTokenException( 589 "Unable to add window " + mWindow + 590 " -- permission denied for this window type"); 591 case WindowManagerGlobal.ADD_INVALID_DISPLAY: 592 throw new WindowManager.InvalidDisplayException( 593 "Unable to add window " + mWindow + 594 " -- the specified display can not be found"); 595 case WindowManagerGlobal.ADD_INVALID_TYPE: 596 throw new WindowManager.InvalidDisplayException( 597 "Unable to add window " + mWindow 598 + " -- the specified window type is not valid"); 599 } 600 throw new RuntimeException( 601 "Unable to add window -- unknown error code " + res); 602 } 603 604 if (view instanceof RootViewSurfaceTaker) { 605 mInputQueueCallback = 606 ((RootViewSurfaceTaker)view).willYouTakeTheInputQueue(); 607 } 608 if (mInputChannel != null) { 609 if (mInputQueueCallback != null) { 610 mInputQueue = new InputQueue(); 611 mInputQueueCallback.onInputQueueCreated(mInputQueue); 612 } 613 mInputEventReceiver = new WindowInputEventReceiver(mInputChannel, 614 Looper.myLooper()); 615 } 616 617 view.assignParent(this); 618 mAddedTouchMode = (res & WindowManagerGlobal.ADD_FLAG_IN_TOUCH_MODE) != 0; 619 mAppVisible = (res & WindowManagerGlobal.ADD_FLAG_APP_VISIBLE) != 0; 620 621 if (mAccessibilityManager.isEnabled()) { 622 mAccessibilityInteractionConnectionManager.ensureConnection(); 623 } 624 625 if (view.getImportantForAccessibility() == View.IMPORTANT_FOR_ACCESSIBILITY_AUTO) { 626 view.setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_YES); 627 } 628 629 // Set up the input pipeline. 630 CharSequence counterSuffix = attrs.getTitle(); 631 mSyntheticInputStage = new SyntheticInputStage(); 632 InputStage viewPostImeStage = new ViewPostImeInputStage(mSyntheticInputStage); 633 InputStage nativePostImeStage = new NativePostImeInputStage(viewPostImeStage, 634 "aq:native-post-ime:" + counterSuffix); 635 InputStage earlyPostImeStage = new EarlyPostImeInputStage(nativePostImeStage); 636 InputStage imeStage = new ImeInputStage(earlyPostImeStage, 637 "aq:ime:" + counterSuffix); 638 InputStage viewPreImeStage = new ViewPreImeInputStage(imeStage); 639 InputStage nativePreImeStage = new NativePreImeInputStage(viewPreImeStage, 640 "aq:native-pre-ime:" + counterSuffix); 641 642 mFirstInputStage = nativePreImeStage; 643 mFirstPostImeInputStage = earlyPostImeStage; 644 mPendingInputEventQueueLengthCounterName = "aq:pending:" + counterSuffix; 645 } 646 } 647 } 648 649 /** Whether the window is in local focus mode or not */ 650 private boolean isInLocalFocusMode() { 651 return (mWindowAttributes.flags & WindowManager.LayoutParams.FLAG_LOCAL_FOCUS_MODE) != 0; 652 } 653 654 public CharSequence getTitle() { 655 return mWindowAttributes.getTitle(); 656 } 657 658 void destroyHardwareResources() { 659 if (mAttachInfo.mHardwareRenderer != null) { 660 mAttachInfo.mHardwareRenderer.destroyHardwareResources(mView); 661 mAttachInfo.mHardwareRenderer.destroy(); 662 } 663 } 664 665 public void detachFunctor(long functor) { 666 // TODO: Make the resize buffer some other way to not need this block 667 mBlockResizeBuffer = true; 668 if (mAttachInfo.mHardwareRenderer != null) { 669 // Fence so that any pending invokeFunctor() messages will be processed 670 // before we return from detachFunctor. 671 mAttachInfo.mHardwareRenderer.stopDrawing(); 672 } 673 } 674 675 /** 676 * Schedules the functor for execution in either kModeProcess or 677 * kModeProcessNoContext, depending on whether or not there is an EGLContext. 678 * 679 * @param functor The native functor to invoke 680 * @param waitForCompletion If true, this will not return until the functor 681 * has invoked. If false, the functor may be invoked 682 * asynchronously. 683 */ 684 public void invokeFunctor(long functor, boolean waitForCompletion) { 685 ThreadedRenderer.invokeFunctor(functor, waitForCompletion); 686 } 687 688 public void registerAnimatingRenderNode(RenderNode animator) { 689 if (mAttachInfo.mHardwareRenderer != null) { 690 mAttachInfo.mHardwareRenderer.registerAnimatingRenderNode(animator); 691 } else { 692 if (mAttachInfo.mPendingAnimatingRenderNodes == null) { 693 mAttachInfo.mPendingAnimatingRenderNodes = new ArrayList<RenderNode>(); 694 } 695 mAttachInfo.mPendingAnimatingRenderNodes.add(animator); 696 } 697 } 698 699 private void enableHardwareAcceleration(WindowManager.LayoutParams attrs) { 700 mAttachInfo.mHardwareAccelerated = false; 701 mAttachInfo.mHardwareAccelerationRequested = false; 702 703 // Don't enable hardware acceleration when the application is in compatibility mode 704 if (mTranslator != null) return; 705 706 // Try to enable hardware acceleration if requested 707 final boolean hardwareAccelerated = 708 (attrs.flags & WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED) != 0; 709 710 if (hardwareAccelerated) { 711 if (!HardwareRenderer.isAvailable()) { 712 return; 713 } 714 715 // Persistent processes (including the system) should not do 716 // accelerated rendering on low-end devices. In that case, 717 // sRendererDisabled will be set. In addition, the system process 718 // itself should never do accelerated rendering. In that case, both 719 // sRendererDisabled and sSystemRendererDisabled are set. When 720 // sSystemRendererDisabled is set, PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED 721 // can be used by code on the system process to escape that and enable 722 // HW accelerated drawing. (This is basically for the lock screen.) 723 724 final boolean fakeHwAccelerated = (attrs.privateFlags & 725 WindowManager.LayoutParams.PRIVATE_FLAG_FAKE_HARDWARE_ACCELERATED) != 0; 726 final boolean forceHwAccelerated = (attrs.privateFlags & 727 WindowManager.LayoutParams.PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED) != 0; 728 729 if (fakeHwAccelerated) { 730 // This is exclusively for the preview windows the window manager 731 // shows for launching applications, so they will look more like 732 // the app being launched. 733 mAttachInfo.mHardwareAccelerationRequested = true; 734 } else if (!HardwareRenderer.sRendererDisabled 735 || (HardwareRenderer.sSystemRendererDisabled && forceHwAccelerated)) { 736 if (mAttachInfo.mHardwareRenderer != null) { 737 mAttachInfo.mHardwareRenderer.destroy(); 738 } 739 740 final Rect insets = attrs.surfaceInsets; 741 final boolean hasSurfaceInsets = insets.left != 0 || insets.right != 0 742 || insets.top != 0 || insets.bottom != 0; 743 final boolean translucent = attrs.format != PixelFormat.OPAQUE || hasSurfaceInsets; 744 mAttachInfo.mHardwareRenderer = HardwareRenderer.create(mContext, translucent); 745 if (mAttachInfo.mHardwareRenderer != null) { 746 mAttachInfo.mHardwareRenderer.setName(attrs.getTitle().toString()); 747 mAttachInfo.mHardwareAccelerated = 748 mAttachInfo.mHardwareAccelerationRequested = true; 749 } 750 } 751 } 752 } 753 754 public View getView() { 755 return mView; 756 } 757 758 final WindowLeaked getLocation() { 759 return mLocation; 760 } 761 762 void setLayoutParams(WindowManager.LayoutParams attrs, boolean newView) { 763 synchronized (this) { 764 final int oldInsetLeft = mWindowAttributes.surfaceInsets.left; 765 final int oldInsetTop = mWindowAttributes.surfaceInsets.top; 766 final int oldInsetRight = mWindowAttributes.surfaceInsets.right; 767 final int oldInsetBottom = mWindowAttributes.surfaceInsets.bottom; 768 final int oldSoftInputMode = mWindowAttributes.softInputMode; 769 final boolean oldHasManualSurfaceInsets = mWindowAttributes.hasManualSurfaceInsets; 770 771 // Keep track of the actual window flags supplied by the client. 772 mClientWindowLayoutFlags = attrs.flags; 773 774 // Preserve compatible window flag if exists. 775 final int compatibleWindowFlag = mWindowAttributes.privateFlags 776 & WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 777 778 // Transfer over system UI visibility values as they carry current state. 779 attrs.systemUiVisibility = mWindowAttributes.systemUiVisibility; 780 attrs.subtreeSystemUiVisibility = mWindowAttributes.subtreeSystemUiVisibility; 781 782 mWindowAttributesChangesFlag = mWindowAttributes.copyFrom(attrs); 783 if ((mWindowAttributesChangesFlag 784 & WindowManager.LayoutParams.TRANSLUCENT_FLAGS_CHANGED) != 0) { 785 // Recompute system ui visibility. 786 mAttachInfo.mRecomputeGlobalAttributes = true; 787 } 788 if (mWindowAttributes.packageName == null) { 789 mWindowAttributes.packageName = mBasePackageName; 790 } 791 mWindowAttributes.privateFlags |= compatibleWindowFlag; 792 793 // Restore old surface insets. 794 mWindowAttributes.surfaceInsets.set( 795 oldInsetLeft, oldInsetTop, oldInsetRight, oldInsetBottom); 796 mWindowAttributes.hasManualSurfaceInsets = oldHasManualSurfaceInsets; 797 798 applyKeepScreenOnFlag(mWindowAttributes); 799 800 if (newView) { 801 mSoftInputMode = attrs.softInputMode; 802 requestLayout(); 803 } 804 805 // Don't lose the mode we last auto-computed. 806 if ((attrs.softInputMode & WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 807 == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 808 mWindowAttributes.softInputMode = (mWindowAttributes.softInputMode 809 & ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 810 | (oldSoftInputMode & WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST); 811 } 812 813 mWindowAttributesChanged = true; 814 scheduleTraversals(); 815 } 816 } 817 818 void handleAppVisibility(boolean visible) { 819 if (mAppVisible != visible) { 820 mAppVisible = visible; 821 scheduleTraversals(); 822 if (!mAppVisible) { 823 WindowManagerGlobal.trimForeground(); 824 } 825 } 826 } 827 828 void handleGetNewSurface() { 829 mNewSurfaceNeeded = true; 830 mFullRedrawNeeded = true; 831 scheduleTraversals(); 832 } 833 834 private final DisplayListener mDisplayListener = new DisplayListener() { 835 @Override 836 public void onDisplayChanged(int displayId) { 837 if (mView != null && mDisplay.getDisplayId() == displayId) { 838 final int oldDisplayState = mAttachInfo.mDisplayState; 839 final int newDisplayState = mDisplay.getState(); 840 if (oldDisplayState != newDisplayState) { 841 mAttachInfo.mDisplayState = newDisplayState; 842 pokeDrawLockIfNeeded(); 843 if (oldDisplayState != Display.STATE_UNKNOWN) { 844 final int oldScreenState = toViewScreenState(oldDisplayState); 845 final int newScreenState = toViewScreenState(newDisplayState); 846 if (oldScreenState != newScreenState) { 847 mView.dispatchScreenStateChanged(newScreenState); 848 } 849 if (oldDisplayState == Display.STATE_OFF) { 850 // Draw was suppressed so we need to for it to happen here. 851 mFullRedrawNeeded = true; 852 scheduleTraversals(); 853 } 854 } 855 } 856 } 857 } 858 859 @Override 860 public void onDisplayRemoved(int displayId) { 861 } 862 863 @Override 864 public void onDisplayAdded(int displayId) { 865 } 866 867 private int toViewScreenState(int displayState) { 868 return displayState == Display.STATE_OFF ? 869 View.SCREEN_STATE_OFF : View.SCREEN_STATE_ON; 870 } 871 }; 872 873 void pokeDrawLockIfNeeded() { 874 final int displayState = mAttachInfo.mDisplayState; 875 if (mView != null && mAdded && mTraversalScheduled 876 && (displayState == Display.STATE_DOZE 877 || displayState == Display.STATE_DOZE_SUSPEND)) { 878 try { 879 mWindowSession.pokeDrawLock(mWindow); 880 } catch (RemoteException ex) { 881 // System server died, oh well. 882 } 883 } 884 } 885 886 @Override 887 public void requestFitSystemWindows() { 888 checkThread(); 889 mApplyInsetsRequested = true; 890 scheduleTraversals(); 891 } 892 893 @Override 894 public void requestLayout() { 895 if (!mHandlingLayoutInLayoutRequest) { 896 checkThread(); 897 mLayoutRequested = true; 898 scheduleTraversals(); 899 } 900 } 901 902 @Override 903 public boolean isLayoutRequested() { 904 return mLayoutRequested; 905 } 906 907 void invalidate() { 908 mDirty.set(0, 0, mWidth, mHeight); 909 if (!mWillDrawSoon) { 910 scheduleTraversals(); 911 } 912 } 913 914 void invalidateWorld(View view) { 915 view.invalidate(); 916 if (view instanceof ViewGroup) { 917 ViewGroup parent = (ViewGroup) view; 918 for (int i = 0; i < parent.getChildCount(); i++) { 919 invalidateWorld(parent.getChildAt(i)); 920 } 921 } 922 } 923 924 @Override 925 public void invalidateChild(View child, Rect dirty) { 926 invalidateChildInParent(null, dirty); 927 } 928 929 @Override 930 public ViewParent invalidateChildInParent(int[] location, Rect dirty) { 931 checkThread(); 932 if (DEBUG_DRAW) Log.v(TAG, "Invalidate child: " + dirty); 933 934 if (dirty == null) { 935 invalidate(); 936 return null; 937 } else if (dirty.isEmpty() && !mIsAnimating) { 938 return null; 939 } 940 941 if (mCurScrollY != 0 || mTranslator != null) { 942 mTempRect.set(dirty); 943 dirty = mTempRect; 944 if (mCurScrollY != 0) { 945 dirty.offset(0, -mCurScrollY); 946 } 947 if (mTranslator != null) { 948 mTranslator.translateRectInAppWindowToScreen(dirty); 949 } 950 if (mAttachInfo.mScalingRequired) { 951 dirty.inset(-1, -1); 952 } 953 } 954 955 final Rect localDirty = mDirty; 956 if (!localDirty.isEmpty() && !localDirty.contains(dirty)) { 957 mAttachInfo.mSetIgnoreDirtyState = true; 958 mAttachInfo.mIgnoreDirtyState = true; 959 } 960 961 // Add the new dirty rect to the current one 962 localDirty.union(dirty.left, dirty.top, dirty.right, dirty.bottom); 963 // Intersect with the bounds of the window to skip 964 // updates that lie outside of the visible region 965 final float appScale = mAttachInfo.mApplicationScale; 966 final boolean intersected = localDirty.intersect(0, 0, 967 (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 968 if (!intersected) { 969 localDirty.setEmpty(); 970 } 971 if (!mWillDrawSoon && (intersected || mIsAnimating)) { 972 scheduleTraversals(); 973 } 974 975 return null; 976 } 977 978 void setStopped(boolean stopped) { 979 if (mStopped != stopped) { 980 mStopped = stopped; 981 if (!stopped) { 982 scheduleTraversals(); 983 } 984 } 985 } 986 987 @Override 988 public ViewParent getParent() { 989 return null; 990 } 991 992 @Override 993 public boolean getChildVisibleRect(View child, Rect r, android.graphics.Point offset) { 994 if (child != mView) { 995 throw new RuntimeException("child is not mine, honest!"); 996 } 997 // Note: don't apply scroll offset, because we want to know its 998 // visibility in the virtual canvas being given to the view hierarchy. 999 return r.intersect(0, 0, mWidth, mHeight); 1000 } 1001 1002 @Override 1003 public void bringChildToFront(View child) { 1004 } 1005 1006 int getHostVisibility() { 1007 return mAppVisible ? mView.getVisibility() : View.GONE; 1008 } 1009 1010 void disposeResizeBuffer() { 1011 if (mResizeBuffer != null) { 1012 mResizeBuffer.destroy(); 1013 mResizeBuffer = null; 1014 } 1015 } 1016 1017 /** 1018 * Add LayoutTransition to the list of transitions to be started in the next traversal. 1019 * This list will be cleared after the transitions on the list are start()'ed. These 1020 * transitionsa re added by LayoutTransition itself when it sets up animations. The setup 1021 * happens during the layout phase of traversal, which we want to complete before any of the 1022 * animations are started (because those animations may side-effect properties that layout 1023 * depends upon, like the bounding rectangles of the affected views). So we add the transition 1024 * to the list and it is started just prior to starting the drawing phase of traversal. 1025 * 1026 * @param transition The LayoutTransition to be started on the next traversal. 1027 * 1028 * @hide 1029 */ 1030 public void requestTransitionStart(LayoutTransition transition) { 1031 if (mPendingTransitions == null || !mPendingTransitions.contains(transition)) { 1032 if (mPendingTransitions == null) { 1033 mPendingTransitions = new ArrayList<LayoutTransition>(); 1034 } 1035 mPendingTransitions.add(transition); 1036 } 1037 } 1038 1039 /** 1040 * Notifies the HardwareRenderer that a new frame will be coming soon. 1041 * Currently only {@link ThreadedRenderer} cares about this, and uses 1042 * this knowledge to adjust the scheduling of off-thread animations 1043 */ 1044 void notifyRendererOfFramePending() { 1045 if (mAttachInfo.mHardwareRenderer != null) { 1046 mAttachInfo.mHardwareRenderer.notifyFramePending(); 1047 } 1048 } 1049 1050 void scheduleTraversals() { 1051 if (!mTraversalScheduled) { 1052 mTraversalScheduled = true; 1053 mTraversalBarrier = mHandler.getLooper().postSyncBarrier(); 1054 mChoreographer.postCallback( 1055 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 1056 if (!mUnbufferedInputDispatch) { 1057 scheduleConsumeBatchedInput(); 1058 } 1059 notifyRendererOfFramePending(); 1060 pokeDrawLockIfNeeded(); 1061 } 1062 } 1063 1064 void unscheduleTraversals() { 1065 if (mTraversalScheduled) { 1066 mTraversalScheduled = false; 1067 mHandler.getLooper().removeSyncBarrier(mTraversalBarrier); 1068 mChoreographer.removeCallbacks( 1069 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 1070 } 1071 } 1072 1073 void doTraversal() { 1074 if (mTraversalScheduled) { 1075 mTraversalScheduled = false; 1076 mHandler.getLooper().removeSyncBarrier(mTraversalBarrier); 1077 1078 if (mProfile) { 1079 Debug.startMethodTracing("ViewAncestor"); 1080 } 1081 1082 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "performTraversals"); 1083 try { 1084 performTraversals(); 1085 } finally { 1086 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 1087 } 1088 1089 if (mProfile) { 1090 Debug.stopMethodTracing(); 1091 mProfile = false; 1092 } 1093 } 1094 } 1095 1096 private void applyKeepScreenOnFlag(WindowManager.LayoutParams params) { 1097 // Update window's global keep screen on flag: if a view has requested 1098 // that the screen be kept on, then it is always set; otherwise, it is 1099 // set to whatever the client last requested for the global state. 1100 if (mAttachInfo.mKeepScreenOn) { 1101 params.flags |= WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON; 1102 } else { 1103 params.flags = (params.flags&~WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON) 1104 | (mClientWindowLayoutFlags&WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 1105 } 1106 } 1107 1108 private boolean collectViewAttributes() { 1109 if (mAttachInfo.mRecomputeGlobalAttributes) { 1110 //Log.i(TAG, "Computing view hierarchy attributes!"); 1111 mAttachInfo.mRecomputeGlobalAttributes = false; 1112 boolean oldScreenOn = mAttachInfo.mKeepScreenOn; 1113 mAttachInfo.mKeepScreenOn = false; 1114 mAttachInfo.mSystemUiVisibility = 0; 1115 mAttachInfo.mHasSystemUiListeners = false; 1116 mView.dispatchCollectViewAttributes(mAttachInfo, 0); 1117 mAttachInfo.mSystemUiVisibility &= ~mAttachInfo.mDisabledSystemUiVisibility; 1118 WindowManager.LayoutParams params = mWindowAttributes; 1119 mAttachInfo.mSystemUiVisibility |= getImpliedSystemUiVisibility(params); 1120 if (mAttachInfo.mKeepScreenOn != oldScreenOn 1121 || mAttachInfo.mSystemUiVisibility != params.subtreeSystemUiVisibility 1122 || mAttachInfo.mHasSystemUiListeners != params.hasSystemUiListeners) { 1123 applyKeepScreenOnFlag(params); 1124 params.subtreeSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1125 params.hasSystemUiListeners = mAttachInfo.mHasSystemUiListeners; 1126 mView.dispatchWindowSystemUiVisiblityChanged(mAttachInfo.mSystemUiVisibility); 1127 return true; 1128 } 1129 } 1130 return false; 1131 } 1132 1133 private int getImpliedSystemUiVisibility(WindowManager.LayoutParams params) { 1134 int vis = 0; 1135 // Translucent decor window flags imply stable system ui visibility. 1136 if ((params.flags & WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS) != 0) { 1137 vis |= View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN; 1138 } 1139 if ((params.flags & WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION) != 0) { 1140 vis |= View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION; 1141 } 1142 return vis; 1143 } 1144 1145 private boolean measureHierarchy(final View host, final WindowManager.LayoutParams lp, 1146 final Resources res, final int desiredWindowWidth, final int desiredWindowHeight) { 1147 int childWidthMeasureSpec; 1148 int childHeightMeasureSpec; 1149 boolean windowSizeMayChange = false; 1150 1151 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) Log.v(TAG, 1152 "Measuring " + host + " in display " + desiredWindowWidth 1153 + "x" + desiredWindowHeight + "..."); 1154 1155 boolean goodMeasure = false; 1156 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT) { 1157 // On large screens, we don't want to allow dialogs to just 1158 // stretch to fill the entire width of the screen to display 1159 // one line of text. First try doing the layout at a smaller 1160 // size to see if it will fit. 1161 final DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1162 res.getValue(com.android.internal.R.dimen.config_prefDialogWidth, mTmpValue, true); 1163 int baseSize = 0; 1164 if (mTmpValue.type == TypedValue.TYPE_DIMENSION) { 1165 baseSize = (int)mTmpValue.getDimension(packageMetrics); 1166 } 1167 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": baseSize=" + baseSize); 1168 if (baseSize != 0 && desiredWindowWidth > baseSize) { 1169 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1170 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1171 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1172 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": measured (" 1173 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1174 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1175 goodMeasure = true; 1176 } else { 1177 // Didn't fit in that size... try expanding a bit. 1178 baseSize = (baseSize+desiredWindowWidth)/2; 1179 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": next baseSize=" 1180 + baseSize); 1181 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1182 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1183 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": measured (" 1184 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1185 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1186 if (DEBUG_DIALOG) Log.v(TAG, "Good!"); 1187 goodMeasure = true; 1188 } 1189 } 1190 } 1191 } 1192 1193 if (!goodMeasure) { 1194 childWidthMeasureSpec = getRootMeasureSpec(desiredWindowWidth, lp.width); 1195 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1196 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1197 if (mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) { 1198 windowSizeMayChange = true; 1199 } 1200 } 1201 1202 if (DBG) { 1203 System.out.println("======================================"); 1204 System.out.println("performTraversals -- after measure"); 1205 host.debug(); 1206 } 1207 1208 return windowSizeMayChange; 1209 } 1210 1211 /** 1212 * Modifies the input matrix such that it maps view-local coordinates to 1213 * on-screen coordinates. 1214 * 1215 * @param m input matrix to modify 1216 */ 1217 void transformMatrixToGlobal(Matrix m) { 1218 m.preTranslate(mAttachInfo.mWindowLeft, mAttachInfo.mWindowTop); 1219 } 1220 1221 /** 1222 * Modifies the input matrix such that it maps on-screen coordinates to 1223 * view-local coordinates. 1224 * 1225 * @param m input matrix to modify 1226 */ 1227 void transformMatrixToLocal(Matrix m) { 1228 m.postTranslate(-mAttachInfo.mWindowLeft, -mAttachInfo.mWindowTop); 1229 } 1230 1231 void dispatchApplyInsets(View host) { 1232 mDispatchContentInsets.set(mAttachInfo.mContentInsets); 1233 mDispatchStableInsets.set(mAttachInfo.mStableInsets); 1234 final boolean isRound = (mIsEmulator && mIsCircularEmulator) || mWindowIsRound; 1235 host.dispatchApplyWindowInsets(new WindowInsets( 1236 mDispatchContentInsets, null /* windowDecorInsets */, 1237 mDispatchStableInsets, isRound)); 1238 } 1239 1240 private void performTraversals() { 1241 // cache mView since it is used so much below... 1242 final View host = mView; 1243 1244 if (DBG) { 1245 System.out.println("======================================"); 1246 System.out.println("performTraversals"); 1247 host.debug(); 1248 } 1249 1250 if (host == null || !mAdded) 1251 return; 1252 1253 mIsInTraversal = true; 1254 mWillDrawSoon = true; 1255 boolean windowSizeMayChange = false; 1256 boolean newSurface = false; 1257 boolean surfaceChanged = false; 1258 WindowManager.LayoutParams lp = mWindowAttributes; 1259 1260 int desiredWindowWidth; 1261 int desiredWindowHeight; 1262 1263 final int viewVisibility = getHostVisibility(); 1264 boolean viewVisibilityChanged = mViewVisibility != viewVisibility 1265 || mNewSurfaceNeeded; 1266 1267 WindowManager.LayoutParams params = null; 1268 if (mWindowAttributesChanged) { 1269 mWindowAttributesChanged = false; 1270 surfaceChanged = true; 1271 params = lp; 1272 } 1273 CompatibilityInfo compatibilityInfo = mDisplayAdjustments.getCompatibilityInfo(); 1274 if (compatibilityInfo.supportsScreen() == mLastInCompatMode) { 1275 params = lp; 1276 mFullRedrawNeeded = true; 1277 mLayoutRequested = true; 1278 if (mLastInCompatMode) { 1279 params.privateFlags &= ~WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 1280 mLastInCompatMode = false; 1281 } else { 1282 params.privateFlags |= WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 1283 mLastInCompatMode = true; 1284 } 1285 } 1286 1287 mWindowAttributesChangesFlag = 0; 1288 1289 Rect frame = mWinFrame; 1290 if (mFirst) { 1291 mFullRedrawNeeded = true; 1292 mLayoutRequested = true; 1293 1294 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL 1295 || lp.type == WindowManager.LayoutParams.TYPE_INPUT_METHOD) { 1296 // NOTE -- system code, won't try to do compat mode. 1297 Point size = new Point(); 1298 mDisplay.getRealSize(size); 1299 desiredWindowWidth = size.x; 1300 desiredWindowHeight = size.y; 1301 } else { 1302 DisplayMetrics packageMetrics = 1303 mView.getContext().getResources().getDisplayMetrics(); 1304 desiredWindowWidth = packageMetrics.widthPixels; 1305 desiredWindowHeight = packageMetrics.heightPixels; 1306 } 1307 1308 // We used to use the following condition to choose 32 bits drawing caches: 1309 // PixelFormat.hasAlpha(lp.format) || lp.format == PixelFormat.RGBX_8888 1310 // However, windows are now always 32 bits by default, so choose 32 bits 1311 mAttachInfo.mUse32BitDrawingCache = true; 1312 mAttachInfo.mHasWindowFocus = false; 1313 mAttachInfo.mWindowVisibility = viewVisibility; 1314 mAttachInfo.mRecomputeGlobalAttributes = false; 1315 viewVisibilityChanged = false; 1316 mLastConfiguration.setTo(host.getResources().getConfiguration()); 1317 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1318 // Set the layout direction if it has not been set before (inherit is the default) 1319 if (mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 1320 host.setLayoutDirection(mLastConfiguration.getLayoutDirection()); 1321 } 1322 host.dispatchAttachedToWindow(mAttachInfo, 0); 1323 mAttachInfo.mTreeObserver.dispatchOnWindowAttachedChange(true); 1324 dispatchApplyInsets(host); 1325 //Log.i(TAG, "Screen on initialized: " + attachInfo.mKeepScreenOn); 1326 1327 } else { 1328 desiredWindowWidth = frame.width(); 1329 desiredWindowHeight = frame.height(); 1330 if (desiredWindowWidth != mWidth || desiredWindowHeight != mHeight) { 1331 if (DEBUG_ORIENTATION) Log.v(TAG, 1332 "View " + host + " resized to: " + frame); 1333 mFullRedrawNeeded = true; 1334 mLayoutRequested = true; 1335 windowSizeMayChange = true; 1336 } 1337 } 1338 1339 if (viewVisibilityChanged) { 1340 mAttachInfo.mWindowVisibility = viewVisibility; 1341 host.dispatchWindowVisibilityChanged(viewVisibility); 1342 if (viewVisibility != View.VISIBLE || mNewSurfaceNeeded) { 1343 destroyHardwareResources(); 1344 } 1345 if (viewVisibility == View.GONE) { 1346 // After making a window gone, we will count it as being 1347 // shown for the first time the next time it gets focus. 1348 mHasHadWindowFocus = false; 1349 } 1350 } 1351 1352 // Non-visible windows can't hold accessibility focus. 1353 if (mAttachInfo.mWindowVisibility != View.VISIBLE) { 1354 host.clearAccessibilityFocus(); 1355 } 1356 1357 // Execute enqueued actions on every traversal in case a detached view enqueued an action 1358 getRunQueue().executeActions(mAttachInfo.mHandler); 1359 1360 boolean insetsChanged = false; 1361 1362 boolean layoutRequested = mLayoutRequested && (!mStopped || mReportNextDraw); 1363 if (layoutRequested) { 1364 1365 final Resources res = mView.getContext().getResources(); 1366 1367 if (mFirst) { 1368 // make sure touch mode code executes by setting cached value 1369 // to opposite of the added touch mode. 1370 mAttachInfo.mInTouchMode = !mAddedTouchMode; 1371 ensureTouchModeLocally(mAddedTouchMode); 1372 } else { 1373 if (!mPendingOverscanInsets.equals(mAttachInfo.mOverscanInsets)) { 1374 insetsChanged = true; 1375 } 1376 if (!mPendingContentInsets.equals(mAttachInfo.mContentInsets)) { 1377 insetsChanged = true; 1378 } 1379 if (!mPendingStableInsets.equals(mAttachInfo.mStableInsets)) { 1380 insetsChanged = true; 1381 } 1382 if (!mPendingVisibleInsets.equals(mAttachInfo.mVisibleInsets)) { 1383 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1384 if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: " 1385 + mAttachInfo.mVisibleInsets); 1386 } 1387 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT 1388 || lp.height == ViewGroup.LayoutParams.WRAP_CONTENT) { 1389 windowSizeMayChange = true; 1390 1391 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL 1392 || lp.type == WindowManager.LayoutParams.TYPE_INPUT_METHOD) { 1393 // NOTE -- system code, won't try to do compat mode. 1394 Point size = new Point(); 1395 mDisplay.getRealSize(size); 1396 desiredWindowWidth = size.x; 1397 desiredWindowHeight = size.y; 1398 } else { 1399 DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1400 desiredWindowWidth = packageMetrics.widthPixels; 1401 desiredWindowHeight = packageMetrics.heightPixels; 1402 } 1403 } 1404 } 1405 1406 // Ask host how big it wants to be 1407 windowSizeMayChange |= measureHierarchy(host, lp, res, 1408 desiredWindowWidth, desiredWindowHeight); 1409 } 1410 1411 if (collectViewAttributes()) { 1412 params = lp; 1413 } 1414 if (mAttachInfo.mForceReportNewAttributes) { 1415 mAttachInfo.mForceReportNewAttributes = false; 1416 params = lp; 1417 } 1418 1419 if (mFirst || mAttachInfo.mViewVisibilityChanged) { 1420 mAttachInfo.mViewVisibilityChanged = false; 1421 int resizeMode = mSoftInputMode & 1422 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST; 1423 // If we are in auto resize mode, then we need to determine 1424 // what mode to use now. 1425 if (resizeMode == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 1426 final int N = mAttachInfo.mScrollContainers.size(); 1427 for (int i=0; i<N; i++) { 1428 if (mAttachInfo.mScrollContainers.get(i).isShown()) { 1429 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE; 1430 } 1431 } 1432 if (resizeMode == 0) { 1433 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_PAN; 1434 } 1435 if ((lp.softInputMode & 1436 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) != resizeMode) { 1437 lp.softInputMode = (lp.softInputMode & 1438 ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) | 1439 resizeMode; 1440 params = lp; 1441 } 1442 } 1443 } 1444 1445 if (params != null) { 1446 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 1447 if (!PixelFormat.formatHasAlpha(params.format)) { 1448 params.format = PixelFormat.TRANSLUCENT; 1449 } 1450 } 1451 mAttachInfo.mOverscanRequested = (params.flags 1452 & WindowManager.LayoutParams.FLAG_LAYOUT_IN_OVERSCAN) != 0; 1453 } 1454 1455 if (mApplyInsetsRequested) { 1456 mApplyInsetsRequested = false; 1457 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1458 dispatchApplyInsets(host); 1459 if (mLayoutRequested) { 1460 // Short-circuit catching a new layout request here, so 1461 // we don't need to go through two layout passes when things 1462 // change due to fitting system windows, which can happen a lot. 1463 windowSizeMayChange |= measureHierarchy(host, lp, 1464 mView.getContext().getResources(), 1465 desiredWindowWidth, desiredWindowHeight); 1466 } 1467 } 1468 1469 if (layoutRequested) { 1470 // Clear this now, so that if anything requests a layout in the 1471 // rest of this function we will catch it and re-run a full 1472 // layout pass. 1473 mLayoutRequested = false; 1474 } 1475 1476 boolean windowShouldResize = layoutRequested && windowSizeMayChange 1477 && ((mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) 1478 || (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT && 1479 frame.width() < desiredWindowWidth && frame.width() != mWidth) 1480 || (lp.height == ViewGroup.LayoutParams.WRAP_CONTENT && 1481 frame.height() < desiredWindowHeight && frame.height() != mHeight)); 1482 1483 // Determine whether to compute insets. 1484 // If there are no inset listeners remaining then we may still need to compute 1485 // insets in case the old insets were non-empty and must be reset. 1486 final boolean computesInternalInsets = 1487 mAttachInfo.mTreeObserver.hasComputeInternalInsetsListeners() 1488 || mAttachInfo.mHasNonEmptyGivenInternalInsets; 1489 1490 boolean insetsPending = false; 1491 int relayoutResult = 0; 1492 1493 if (mFirst || windowShouldResize || insetsChanged || 1494 viewVisibilityChanged || params != null) { 1495 1496 if (viewVisibility == View.VISIBLE) { 1497 // If this window is giving internal insets to the window 1498 // manager, and it is being added or changing its visibility, 1499 // then we want to first give the window manager "fake" 1500 // insets to cause it to effectively ignore the content of 1501 // the window during layout. This avoids it briefly causing 1502 // other windows to resize/move based on the raw frame of the 1503 // window, waiting until we can finish laying out this window 1504 // and get back to the window manager with the ultimately 1505 // computed insets. 1506 insetsPending = computesInternalInsets && (mFirst || viewVisibilityChanged); 1507 } 1508 1509 if (mSurfaceHolder != null) { 1510 mSurfaceHolder.mSurfaceLock.lock(); 1511 mDrawingAllowed = true; 1512 } 1513 1514 boolean hwInitialized = false; 1515 boolean contentInsetsChanged = false; 1516 boolean hadSurface = mSurface.isValid(); 1517 1518 try { 1519 if (DEBUG_LAYOUT) { 1520 Log.i(TAG, "host=w:" + host.getMeasuredWidth() + ", h:" + 1521 host.getMeasuredHeight() + ", params=" + params); 1522 } 1523 1524 if (mAttachInfo.mHardwareRenderer != null) { 1525 // relayoutWindow may decide to destroy mSurface. As that decision 1526 // happens in WindowManager service, we need to be defensive here 1527 // and stop using the surface in case it gets destroyed. 1528 if (mAttachInfo.mHardwareRenderer.pauseSurface(mSurface)) { 1529 // Animations were running so we need to push a frame 1530 // to resume them 1531 mDirty.set(0, 0, mWidth, mHeight); 1532 } 1533 mChoreographer.mFrameInfo.addFlags(FrameInfo.FLAG_WINDOW_LAYOUT_CHANGED); 1534 } 1535 final int surfaceGenerationId = mSurface.getGenerationId(); 1536 relayoutResult = relayoutWindow(params, viewVisibility, insetsPending); 1537 if (!mDrawDuringWindowsAnimating && 1538 (relayoutResult & WindowManagerGlobal.RELAYOUT_RES_ANIMATING) != 0) { 1539 mWindowsAnimating = true; 1540 } 1541 1542 if (DEBUG_LAYOUT) Log.v(TAG, "relayout: frame=" + frame.toShortString() 1543 + " overscan=" + mPendingOverscanInsets.toShortString() 1544 + " content=" + mPendingContentInsets.toShortString() 1545 + " visible=" + mPendingVisibleInsets.toShortString() 1546 + " visible=" + mPendingStableInsets.toShortString() 1547 + " surface=" + mSurface); 1548 1549 if (mPendingConfiguration.seq != 0) { 1550 if (DEBUG_CONFIGURATION) Log.v(TAG, "Visible with new config: " 1551 + mPendingConfiguration); 1552 updateConfiguration(mPendingConfiguration, !mFirst); 1553 mPendingConfiguration.seq = 0; 1554 } 1555 1556 final boolean overscanInsetsChanged = !mPendingOverscanInsets.equals( 1557 mAttachInfo.mOverscanInsets); 1558 contentInsetsChanged = !mPendingContentInsets.equals( 1559 mAttachInfo.mContentInsets); 1560 final boolean visibleInsetsChanged = !mPendingVisibleInsets.equals( 1561 mAttachInfo.mVisibleInsets); 1562 final boolean stableInsetsChanged = !mPendingStableInsets.equals( 1563 mAttachInfo.mStableInsets); 1564 if (contentInsetsChanged) { 1565 if (mWidth > 0 && mHeight > 0 && lp != null && 1566 ((lp.systemUiVisibility|lp.subtreeSystemUiVisibility) 1567 & View.SYSTEM_UI_LAYOUT_FLAGS) == 0 && 1568 mSurface != null && mSurface.isValid() && 1569 !mAttachInfo.mTurnOffWindowResizeAnim && 1570 mAttachInfo.mHardwareRenderer != null && 1571 mAttachInfo.mHardwareRenderer.isEnabled() && 1572 lp != null && !PixelFormat.formatHasAlpha(lp.format) 1573 && !mBlockResizeBuffer) { 1574 1575 disposeResizeBuffer(); 1576 1577// TODO: Again.... 1578// if (mResizeBuffer == null) { 1579// mResizeBuffer = mAttachInfo.mHardwareRenderer.createDisplayListLayer( 1580// mWidth, mHeight); 1581// } 1582// mResizeBuffer.prepare(mWidth, mHeight, false); 1583// RenderNode layerRenderNode = mResizeBuffer.startRecording(); 1584// HardwareCanvas layerCanvas = layerRenderNode.start(mWidth, mHeight); 1585// try { 1586// final int restoreCount = layerCanvas.save(); 1587// 1588// int yoff; 1589// final boolean scrolling = mScroller != null 1590// && mScroller.computeScrollOffset(); 1591// if (scrolling) { 1592// yoff = mScroller.getCurrY(); 1593// mScroller.abortAnimation(); 1594// } else { 1595// yoff = mScrollY; 1596// } 1597// 1598// layerCanvas.translate(0, -yoff); 1599// if (mTranslator != null) { 1600// mTranslator.translateCanvas(layerCanvas); 1601// } 1602// 1603// RenderNode renderNode = mView.mRenderNode; 1604// if (renderNode != null && renderNode.isValid()) { 1605// layerCanvas.drawDisplayList(renderNode, null, 1606// RenderNode.FLAG_CLIP_CHILDREN); 1607// } else { 1608// mView.draw(layerCanvas); 1609// } 1610// 1611// drawAccessibilityFocusedDrawableIfNeeded(layerCanvas); 1612// 1613// mResizeBufferStartTime = SystemClock.uptimeMillis(); 1614// mResizeBufferDuration = mView.getResources().getInteger( 1615// com.android.internal.R.integer.config_mediumAnimTime); 1616// 1617// layerCanvas.restoreToCount(restoreCount); 1618// layerRenderNode.end(layerCanvas); 1619// layerRenderNode.setCaching(true); 1620// layerRenderNode.setLeftTopRightBottom(0, 0, mWidth, mHeight); 1621// mTempRect.set(0, 0, mWidth, mHeight); 1622// } finally { 1623// mResizeBuffer.endRecording(mTempRect); 1624// } 1625// mAttachInfo.mHardwareRenderer.flushLayerUpdates(); 1626 } 1627 mAttachInfo.mContentInsets.set(mPendingContentInsets); 1628 if (DEBUG_LAYOUT) Log.v(TAG, "Content insets changing to: " 1629 + mAttachInfo.mContentInsets); 1630 } 1631 if (overscanInsetsChanged) { 1632 mAttachInfo.mOverscanInsets.set(mPendingOverscanInsets); 1633 if (DEBUG_LAYOUT) Log.v(TAG, "Overscan insets changing to: " 1634 + mAttachInfo.mOverscanInsets); 1635 // Need to relayout with content insets. 1636 contentInsetsChanged = true; 1637 } 1638 if (stableInsetsChanged) { 1639 mAttachInfo.mStableInsets.set(mPendingStableInsets); 1640 if (DEBUG_LAYOUT) Log.v(TAG, "Decor insets changing to: " 1641 + mAttachInfo.mStableInsets); 1642 // Need to relayout with content insets. 1643 contentInsetsChanged = true; 1644 } 1645 if (contentInsetsChanged || mLastSystemUiVisibility != 1646 mAttachInfo.mSystemUiVisibility || mApplyInsetsRequested 1647 || mLastOverscanRequested != mAttachInfo.mOverscanRequested) { 1648 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1649 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1650 mApplyInsetsRequested = false; 1651 dispatchApplyInsets(host); 1652 } 1653 if (visibleInsetsChanged) { 1654 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1655 if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: " 1656 + mAttachInfo.mVisibleInsets); 1657 } 1658 1659 if (!hadSurface) { 1660 if (mSurface.isValid()) { 1661 // If we are creating a new surface, then we need to 1662 // completely redraw it. Also, when we get to the 1663 // point of drawing it we will hold off and schedule 1664 // a new traversal instead. This is so we can tell the 1665 // window manager about all of the windows being displayed 1666 // before actually drawing them, so it can display then 1667 // all at once. 1668 newSurface = true; 1669 mFullRedrawNeeded = true; 1670 mPreviousTransparentRegion.setEmpty(); 1671 1672 if (mAttachInfo.mHardwareRenderer != null) { 1673 try { 1674 hwInitialized = mAttachInfo.mHardwareRenderer.initialize( 1675 mSurface); 1676 } catch (OutOfResourcesException e) { 1677 handleOutOfResourcesException(e); 1678 return; 1679 } 1680 } 1681 } 1682 } else if (!mSurface.isValid()) { 1683 // If the surface has been removed, then reset the scroll 1684 // positions. 1685 if (mLastScrolledFocus != null) { 1686 mLastScrolledFocus.clear(); 1687 } 1688 mScrollY = mCurScrollY = 0; 1689 if (mView instanceof RootViewSurfaceTaker) { 1690 ((RootViewSurfaceTaker) mView).onRootViewScrollYChanged(mCurScrollY); 1691 } 1692 if (mScroller != null) { 1693 mScroller.abortAnimation(); 1694 } 1695 disposeResizeBuffer(); 1696 // Our surface is gone 1697 if (mAttachInfo.mHardwareRenderer != null && 1698 mAttachInfo.mHardwareRenderer.isEnabled()) { 1699 mAttachInfo.mHardwareRenderer.destroy(); 1700 } 1701 } else if (surfaceGenerationId != mSurface.getGenerationId() && 1702 mSurfaceHolder == null && mAttachInfo.mHardwareRenderer != null) { 1703 mFullRedrawNeeded = true; 1704 try { 1705 mAttachInfo.mHardwareRenderer.updateSurface(mSurface); 1706 } catch (OutOfResourcesException e) { 1707 handleOutOfResourcesException(e); 1708 return; 1709 } 1710 } 1711 } catch (RemoteException e) { 1712 } 1713 1714 if (DEBUG_ORIENTATION) Log.v( 1715 TAG, "Relayout returned: frame=" + frame + ", surface=" + mSurface); 1716 1717 mAttachInfo.mWindowLeft = frame.left; 1718 mAttachInfo.mWindowTop = frame.top; 1719 1720 // !!FIXME!! This next section handles the case where we did not get the 1721 // window size we asked for. We should avoid this by getting a maximum size from 1722 // the window session beforehand. 1723 if (mWidth != frame.width() || mHeight != frame.height()) { 1724 mWidth = frame.width(); 1725 mHeight = frame.height(); 1726 } 1727 1728 if (mSurfaceHolder != null) { 1729 // The app owns the surface; tell it about what is going on. 1730 if (mSurface.isValid()) { 1731 // XXX .copyFrom() doesn't work! 1732 //mSurfaceHolder.mSurface.copyFrom(mSurface); 1733 mSurfaceHolder.mSurface = mSurface; 1734 } 1735 mSurfaceHolder.setSurfaceFrameSize(mWidth, mHeight); 1736 mSurfaceHolder.mSurfaceLock.unlock(); 1737 if (mSurface.isValid()) { 1738 if (!hadSurface) { 1739 mSurfaceHolder.ungetCallbacks(); 1740 1741 mIsCreating = true; 1742 mSurfaceHolderCallback.surfaceCreated(mSurfaceHolder); 1743 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1744 if (callbacks != null) { 1745 for (SurfaceHolder.Callback c : callbacks) { 1746 c.surfaceCreated(mSurfaceHolder); 1747 } 1748 } 1749 surfaceChanged = true; 1750 } 1751 if (surfaceChanged) { 1752 mSurfaceHolderCallback.surfaceChanged(mSurfaceHolder, 1753 lp.format, mWidth, mHeight); 1754 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1755 if (callbacks != null) { 1756 for (SurfaceHolder.Callback c : callbacks) { 1757 c.surfaceChanged(mSurfaceHolder, lp.format, 1758 mWidth, mHeight); 1759 } 1760 } 1761 } 1762 mIsCreating = false; 1763 } else if (hadSurface) { 1764 mSurfaceHolder.ungetCallbacks(); 1765 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1766 mSurfaceHolderCallback.surfaceDestroyed(mSurfaceHolder); 1767 if (callbacks != null) { 1768 for (SurfaceHolder.Callback c : callbacks) { 1769 c.surfaceDestroyed(mSurfaceHolder); 1770 } 1771 } 1772 mSurfaceHolder.mSurfaceLock.lock(); 1773 try { 1774 mSurfaceHolder.mSurface = new Surface(); 1775 } finally { 1776 mSurfaceHolder.mSurfaceLock.unlock(); 1777 } 1778 } 1779 } 1780 1781 if (mAttachInfo.mHardwareRenderer != null && 1782 mAttachInfo.mHardwareRenderer.isEnabled()) { 1783 if (hwInitialized || 1784 mWidth != mAttachInfo.mHardwareRenderer.getWidth() || 1785 mHeight != mAttachInfo.mHardwareRenderer.getHeight()) { 1786 mAttachInfo.mHardwareRenderer.setup( 1787 mWidth, mHeight, mWindowAttributes.surfaceInsets); 1788 if (!hwInitialized) { 1789 mAttachInfo.mHardwareRenderer.invalidate(mSurface); 1790 mFullRedrawNeeded = true; 1791 } 1792 } 1793 } 1794 1795 if (!mStopped || mReportNextDraw) { 1796 boolean focusChangedDueToTouchMode = ensureTouchModeLocally( 1797 (relayoutResult&WindowManagerGlobal.RELAYOUT_RES_IN_TOUCH_MODE) != 0); 1798 if (focusChangedDueToTouchMode || mWidth != host.getMeasuredWidth() 1799 || mHeight != host.getMeasuredHeight() || contentInsetsChanged) { 1800 int childWidthMeasureSpec = getRootMeasureSpec(mWidth, lp.width); 1801 int childHeightMeasureSpec = getRootMeasureSpec(mHeight, lp.height); 1802 1803 if (DEBUG_LAYOUT) Log.v(TAG, "Ooops, something changed! mWidth=" 1804 + mWidth + " measuredWidth=" + host.getMeasuredWidth() 1805 + " mHeight=" + mHeight 1806 + " measuredHeight=" + host.getMeasuredHeight() 1807 + " coveredInsetsChanged=" + contentInsetsChanged); 1808 1809 // Ask host how big it wants to be 1810 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1811 1812 // Implementation of weights from WindowManager.LayoutParams 1813 // We just grow the dimensions as needed and re-measure if 1814 // needs be 1815 int width = host.getMeasuredWidth(); 1816 int height = host.getMeasuredHeight(); 1817 boolean measureAgain = false; 1818 1819 if (lp.horizontalWeight > 0.0f) { 1820 width += (int) ((mWidth - width) * lp.horizontalWeight); 1821 childWidthMeasureSpec = MeasureSpec.makeMeasureSpec(width, 1822 MeasureSpec.EXACTLY); 1823 measureAgain = true; 1824 } 1825 if (lp.verticalWeight > 0.0f) { 1826 height += (int) ((mHeight - height) * lp.verticalWeight); 1827 childHeightMeasureSpec = MeasureSpec.makeMeasureSpec(height, 1828 MeasureSpec.EXACTLY); 1829 measureAgain = true; 1830 } 1831 1832 if (measureAgain) { 1833 if (DEBUG_LAYOUT) Log.v(TAG, 1834 "And hey let's measure once more: width=" + width 1835 + " height=" + height); 1836 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1837 } 1838 1839 layoutRequested = true; 1840 } 1841 } 1842 } else { 1843 // Not the first pass and no window/insets/visibility change but the window 1844 // may have moved and we need check that and if so to update the left and right 1845 // in the attach info. We translate only the window frame since on window move 1846 // the window manager tells us only for the new frame but the insets are the 1847 // same and we do not want to translate them more than once. 1848 1849 // TODO: Well, we are checking whether the frame has changed similarly 1850 // to how this is done for the insets. This is however incorrect since 1851 // the insets and the frame are translated. For example, the old frame 1852 // was (1, 1 - 1, 1) and was translated to say (2, 2 - 2, 2), now the new 1853 // reported frame is (2, 2 - 2, 2) which implies no change but this is not 1854 // true since we are comparing a not translated value to a translated one. 1855 // This scenario is rare but we may want to fix that. 1856 1857 final boolean windowMoved = (mAttachInfo.mWindowLeft != frame.left 1858 || mAttachInfo.mWindowTop != frame.top); 1859 if (windowMoved) { 1860 if (mTranslator != null) { 1861 mTranslator.translateRectInScreenToAppWinFrame(frame); 1862 } 1863 mAttachInfo.mWindowLeft = frame.left; 1864 mAttachInfo.mWindowTop = frame.top; 1865 } 1866 } 1867 1868 final boolean didLayout = layoutRequested && (!mStopped || mReportNextDraw); 1869 boolean triggerGlobalLayoutListener = didLayout 1870 || mAttachInfo.mRecomputeGlobalAttributes; 1871 if (didLayout) { 1872 performLayout(lp, desiredWindowWidth, desiredWindowHeight); 1873 1874 // By this point all views have been sized and positioned 1875 // We can compute the transparent area 1876 1877 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 1878 // start out transparent 1879 // TODO: AVOID THAT CALL BY CACHING THE RESULT? 1880 host.getLocationInWindow(mTmpLocation); 1881 mTransparentRegion.set(mTmpLocation[0], mTmpLocation[1], 1882 mTmpLocation[0] + host.mRight - host.mLeft, 1883 mTmpLocation[1] + host.mBottom - host.mTop); 1884 1885 host.gatherTransparentRegion(mTransparentRegion); 1886 if (mTranslator != null) { 1887 mTranslator.translateRegionInWindowToScreen(mTransparentRegion); 1888 } 1889 1890 if (!mTransparentRegion.equals(mPreviousTransparentRegion)) { 1891 mPreviousTransparentRegion.set(mTransparentRegion); 1892 mFullRedrawNeeded = true; 1893 // reconfigure window manager 1894 try { 1895 mWindowSession.setTransparentRegion(mWindow, mTransparentRegion); 1896 } catch (RemoteException e) { 1897 } 1898 } 1899 } 1900 1901 if (DBG) { 1902 System.out.println("======================================"); 1903 System.out.println("performTraversals -- after setFrame"); 1904 host.debug(); 1905 } 1906 } 1907 1908 if (triggerGlobalLayoutListener) { 1909 mAttachInfo.mRecomputeGlobalAttributes = false; 1910 mAttachInfo.mTreeObserver.dispatchOnGlobalLayout(); 1911 } 1912 1913 if (computesInternalInsets) { 1914 // Clear the original insets. 1915 final ViewTreeObserver.InternalInsetsInfo insets = mAttachInfo.mGivenInternalInsets; 1916 insets.reset(); 1917 1918 // Compute new insets in place. 1919 mAttachInfo.mTreeObserver.dispatchOnComputeInternalInsets(insets); 1920 mAttachInfo.mHasNonEmptyGivenInternalInsets = !insets.isEmpty(); 1921 1922 // Tell the window manager. 1923 if (insetsPending || !mLastGivenInsets.equals(insets)) { 1924 mLastGivenInsets.set(insets); 1925 1926 // Translate insets to screen coordinates if needed. 1927 final Rect contentInsets; 1928 final Rect visibleInsets; 1929 final Region touchableRegion; 1930 if (mTranslator != null) { 1931 contentInsets = mTranslator.getTranslatedContentInsets(insets.contentInsets); 1932 visibleInsets = mTranslator.getTranslatedVisibleInsets(insets.visibleInsets); 1933 touchableRegion = mTranslator.getTranslatedTouchableArea(insets.touchableRegion); 1934 } else { 1935 contentInsets = insets.contentInsets; 1936 visibleInsets = insets.visibleInsets; 1937 touchableRegion = insets.touchableRegion; 1938 } 1939 1940 try { 1941 mWindowSession.setInsets(mWindow, insets.mTouchableInsets, 1942 contentInsets, visibleInsets, touchableRegion); 1943 } catch (RemoteException e) { 1944 } 1945 } 1946 } 1947 1948 boolean skipDraw = false; 1949 1950 if (mFirst) { 1951 // handle first focus request 1952 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: mView.hasFocus()=" 1953 + mView.hasFocus()); 1954 if (mView != null) { 1955 if (!mView.hasFocus()) { 1956 mView.requestFocus(View.FOCUS_FORWARD); 1957 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: requested focused view=" 1958 + mView.findFocus()); 1959 } else { 1960 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: existing focused view=" 1961 + mView.findFocus()); 1962 } 1963 } 1964 if ((relayoutResult & WindowManagerGlobal.RELAYOUT_RES_ANIMATING) != 0) { 1965 // The first time we relayout the window, if the system is 1966 // doing window animations, we want to hold of on any future 1967 // draws until the animation is done. 1968 mWindowsAnimating = true; 1969 } 1970 } else if (mWindowsAnimating) { 1971 skipDraw = true; 1972 } 1973 1974 mFirst = false; 1975 mWillDrawSoon = false; 1976 mNewSurfaceNeeded = false; 1977 mViewVisibility = viewVisibility; 1978 1979 if (mAttachInfo.mHasWindowFocus && !isInLocalFocusMode()) { 1980 final boolean imTarget = WindowManager.LayoutParams 1981 .mayUseInputMethod(mWindowAttributes.flags); 1982 if (imTarget != mLastWasImTarget) { 1983 mLastWasImTarget = imTarget; 1984 InputMethodManager imm = InputMethodManager.peekInstance(); 1985 if (imm != null && imTarget) { 1986 imm.startGettingWindowFocus(mView); 1987 imm.onWindowFocus(mView, mView.findFocus(), 1988 mWindowAttributes.softInputMode, 1989 !mHasHadWindowFocus, mWindowAttributes.flags); 1990 } 1991 } 1992 } 1993 1994 // Remember if we must report the next draw. 1995 if ((relayoutResult & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 1996 mReportNextDraw = true; 1997 } 1998 1999 boolean cancelDraw = mAttachInfo.mTreeObserver.dispatchOnPreDraw() || 2000 viewVisibility != View.VISIBLE; 2001 2002 if (!cancelDraw && !newSurface) { 2003 if (!skipDraw || mReportNextDraw) { 2004 if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 2005 for (int i = 0; i < mPendingTransitions.size(); ++i) { 2006 mPendingTransitions.get(i).startChangingAnimations(); 2007 } 2008 mPendingTransitions.clear(); 2009 } 2010 2011 performDraw(); 2012 } 2013 } else { 2014 if (viewVisibility == View.VISIBLE) { 2015 // Try again 2016 scheduleTraversals(); 2017 } else if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 2018 for (int i = 0; i < mPendingTransitions.size(); ++i) { 2019 mPendingTransitions.get(i).endChangingAnimations(); 2020 } 2021 mPendingTransitions.clear(); 2022 } 2023 } 2024 2025 mIsInTraversal = false; 2026 } 2027 2028 private void handleOutOfResourcesException(Surface.OutOfResourcesException e) { 2029 Log.e(TAG, "OutOfResourcesException initializing HW surface", e); 2030 try { 2031 if (!mWindowSession.outOfMemory(mWindow) && 2032 Process.myUid() != Process.SYSTEM_UID) { 2033 Slog.w(TAG, "No processes killed for memory; killing self"); 2034 Process.killProcess(Process.myPid()); 2035 } 2036 } catch (RemoteException ex) { 2037 } 2038 mLayoutRequested = true; // ask wm for a new surface next time. 2039 } 2040 2041 private void performMeasure(int childWidthMeasureSpec, int childHeightMeasureSpec) { 2042 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "measure"); 2043 try { 2044 mView.measure(childWidthMeasureSpec, childHeightMeasureSpec); 2045 } finally { 2046 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2047 } 2048 } 2049 2050 /** 2051 * Called by {@link android.view.View#isInLayout()} to determine whether the view hierarchy 2052 * is currently undergoing a layout pass. 2053 * 2054 * @return whether the view hierarchy is currently undergoing a layout pass 2055 */ 2056 boolean isInLayout() { 2057 return mInLayout; 2058 } 2059 2060 /** 2061 * Called by {@link android.view.View#requestLayout()} if the view hierarchy is currently 2062 * undergoing a layout pass. requestLayout() should not generally be called during layout, 2063 * unless the container hierarchy knows what it is doing (i.e., it is fine as long as 2064 * all children in that container hierarchy are measured and laid out at the end of the layout 2065 * pass for that container). If requestLayout() is called anyway, we handle it correctly 2066 * by registering all requesters during a frame as it proceeds. At the end of the frame, 2067 * we check all of those views to see if any still have pending layout requests, which 2068 * indicates that they were not correctly handled by their container hierarchy. If that is 2069 * the case, we clear all such flags in the tree, to remove the buggy flag state that leads 2070 * to blank containers, and force a second request/measure/layout pass in this frame. If 2071 * more requestLayout() calls are received during that second layout pass, we post those 2072 * requests to the next frame to avoid possible infinite loops. 2073 * 2074 * <p>The return value from this method indicates whether the request should proceed 2075 * (if it is a request during the first layout pass) or should be skipped and posted to the 2076 * next frame (if it is a request during the second layout pass).</p> 2077 * 2078 * @param view the view that requested the layout. 2079 * 2080 * @return true if request should proceed, false otherwise. 2081 */ 2082 boolean requestLayoutDuringLayout(final View view) { 2083 if (view.mParent == null || view.mAttachInfo == null) { 2084 // Would not normally trigger another layout, so just let it pass through as usual 2085 return true; 2086 } 2087 if (!mLayoutRequesters.contains(view)) { 2088 mLayoutRequesters.add(view); 2089 } 2090 if (!mHandlingLayoutInLayoutRequest) { 2091 // Let the request proceed normally; it will be processed in a second layout pass 2092 // if necessary 2093 return true; 2094 } else { 2095 // Don't let the request proceed during the second layout pass. 2096 // It will post to the next frame instead. 2097 return false; 2098 } 2099 } 2100 2101 private void performLayout(WindowManager.LayoutParams lp, int desiredWindowWidth, 2102 int desiredWindowHeight) { 2103 mLayoutRequested = false; 2104 mScrollMayChange = true; 2105 mInLayout = true; 2106 2107 final View host = mView; 2108 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) { 2109 Log.v(TAG, "Laying out " + host + " to (" + 2110 host.getMeasuredWidth() + ", " + host.getMeasuredHeight() + ")"); 2111 } 2112 2113 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "layout"); 2114 try { 2115 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 2116 2117 mInLayout = false; 2118 int numViewsRequestingLayout = mLayoutRequesters.size(); 2119 if (numViewsRequestingLayout > 0) { 2120 // requestLayout() was called during layout. 2121 // If no layout-request flags are set on the requesting views, there is no problem. 2122 // If some requests are still pending, then we need to clear those flags and do 2123 // a full request/measure/layout pass to handle this situation. 2124 ArrayList<View> validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, 2125 false); 2126 if (validLayoutRequesters != null) { 2127 // Set this flag to indicate that any further requests are happening during 2128 // the second pass, which may result in posting those requests to the next 2129 // frame instead 2130 mHandlingLayoutInLayoutRequest = true; 2131 2132 // Process fresh layout requests, then measure and layout 2133 int numValidRequests = validLayoutRequesters.size(); 2134 for (int i = 0; i < numValidRequests; ++i) { 2135 final View view = validLayoutRequesters.get(i); 2136 Log.w("View", "requestLayout() improperly called by " + view + 2137 " during layout: running second layout pass"); 2138 view.requestLayout(); 2139 } 2140 measureHierarchy(host, lp, mView.getContext().getResources(), 2141 desiredWindowWidth, desiredWindowHeight); 2142 mInLayout = true; 2143 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 2144 2145 mHandlingLayoutInLayoutRequest = false; 2146 2147 // Check the valid requests again, this time without checking/clearing the 2148 // layout flags, since requests happening during the second pass get noop'd 2149 validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, true); 2150 if (validLayoutRequesters != null) { 2151 final ArrayList<View> finalRequesters = validLayoutRequesters; 2152 // Post second-pass requests to the next frame 2153 getRunQueue().post(new Runnable() { 2154 @Override 2155 public void run() { 2156 int numValidRequests = finalRequesters.size(); 2157 for (int i = 0; i < numValidRequests; ++i) { 2158 final View view = finalRequesters.get(i); 2159 Log.w("View", "requestLayout() improperly called by " + view + 2160 " during second layout pass: posting in next frame"); 2161 view.requestLayout(); 2162 } 2163 } 2164 }); 2165 } 2166 } 2167 2168 } 2169 } finally { 2170 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2171 } 2172 mInLayout = false; 2173 } 2174 2175 /** 2176 * This method is called during layout when there have been calls to requestLayout() during 2177 * layout. It walks through the list of views that requested layout to determine which ones 2178 * still need it, based on visibility in the hierarchy and whether they have already been 2179 * handled (as is usually the case with ListView children). 2180 * 2181 * @param layoutRequesters The list of views that requested layout during layout 2182 * @param secondLayoutRequests Whether the requests were issued during the second layout pass. 2183 * If so, the FORCE_LAYOUT flag was not set on requesters. 2184 * @return A list of the actual views that still need to be laid out. 2185 */ 2186 private ArrayList<View> getValidLayoutRequesters(ArrayList<View> layoutRequesters, 2187 boolean secondLayoutRequests) { 2188 2189 int numViewsRequestingLayout = layoutRequesters.size(); 2190 ArrayList<View> validLayoutRequesters = null; 2191 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2192 View view = layoutRequesters.get(i); 2193 if (view != null && view.mAttachInfo != null && view.mParent != null && 2194 (secondLayoutRequests || (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) == 2195 View.PFLAG_FORCE_LAYOUT)) { 2196 boolean gone = false; 2197 View parent = view; 2198 // Only trigger new requests for views in a non-GONE hierarchy 2199 while (parent != null) { 2200 if ((parent.mViewFlags & View.VISIBILITY_MASK) == View.GONE) { 2201 gone = true; 2202 break; 2203 } 2204 if (parent.mParent instanceof View) { 2205 parent = (View) parent.mParent; 2206 } else { 2207 parent = null; 2208 } 2209 } 2210 if (!gone) { 2211 if (validLayoutRequesters == null) { 2212 validLayoutRequesters = new ArrayList<View>(); 2213 } 2214 validLayoutRequesters.add(view); 2215 } 2216 } 2217 } 2218 if (!secondLayoutRequests) { 2219 // If we're checking the layout flags, then we need to clean them up also 2220 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2221 View view = layoutRequesters.get(i); 2222 while (view != null && 2223 (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) != 0) { 2224 view.mPrivateFlags &= ~View.PFLAG_FORCE_LAYOUT; 2225 if (view.mParent instanceof View) { 2226 view = (View) view.mParent; 2227 } else { 2228 view = null; 2229 } 2230 } 2231 } 2232 } 2233 layoutRequesters.clear(); 2234 return validLayoutRequesters; 2235 } 2236 2237 @Override 2238 public void requestTransparentRegion(View child) { 2239 // the test below should not fail unless someone is messing with us 2240 checkThread(); 2241 if (mView == child) { 2242 mView.mPrivateFlags |= View.PFLAG_REQUEST_TRANSPARENT_REGIONS; 2243 // Need to make sure we re-evaluate the window attributes next 2244 // time around, to ensure the window has the correct format. 2245 mWindowAttributesChanged = true; 2246 mWindowAttributesChangesFlag = 0; 2247 requestLayout(); 2248 } 2249 } 2250 2251 /** 2252 * Figures out the measure spec for the root view in a window based on it's 2253 * layout params. 2254 * 2255 * @param windowSize 2256 * The available width or height of the window 2257 * 2258 * @param rootDimension 2259 * The layout params for one dimension (width or height) of the 2260 * window. 2261 * 2262 * @return The measure spec to use to measure the root view. 2263 */ 2264 private static int getRootMeasureSpec(int windowSize, int rootDimension) { 2265 int measureSpec; 2266 switch (rootDimension) { 2267 2268 case ViewGroup.LayoutParams.MATCH_PARENT: 2269 // Window can't resize. Force root view to be windowSize. 2270 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.EXACTLY); 2271 break; 2272 case ViewGroup.LayoutParams.WRAP_CONTENT: 2273 // Window can resize. Set max size for root view. 2274 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.AT_MOST); 2275 break; 2276 default: 2277 // Window wants to be an exact size. Force root view to be that size. 2278 measureSpec = MeasureSpec.makeMeasureSpec(rootDimension, MeasureSpec.EXACTLY); 2279 break; 2280 } 2281 return measureSpec; 2282 } 2283 2284 int mHardwareXOffset; 2285 int mHardwareYOffset; 2286 int mResizeAlpha; 2287 final Paint mResizePaint = new Paint(); 2288 2289 @Override 2290 public void onHardwarePreDraw(HardwareCanvas canvas) { 2291 canvas.translate(-mHardwareXOffset, -mHardwareYOffset); 2292 } 2293 2294 @Override 2295 public void onHardwarePostDraw(HardwareCanvas canvas) { 2296 if (mResizeBuffer != null) { 2297 mResizePaint.setAlpha(mResizeAlpha); 2298 canvas.drawHardwareLayer(mResizeBuffer, mHardwareXOffset, mHardwareYOffset, 2299 mResizePaint); 2300 } 2301 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2302 } 2303 2304 /** 2305 * @hide 2306 */ 2307 void outputDisplayList(View view) { 2308 RenderNode renderNode = view.getDisplayList(); 2309 if (renderNode != null) { 2310 renderNode.output(); 2311 } 2312 } 2313 2314 /** 2315 * @see #PROPERTY_PROFILE_RENDERING 2316 */ 2317 private void profileRendering(boolean enabled) { 2318 if (mProfileRendering) { 2319 mRenderProfilingEnabled = enabled; 2320 2321 if (mRenderProfiler != null) { 2322 mChoreographer.removeFrameCallback(mRenderProfiler); 2323 } 2324 if (mRenderProfilingEnabled) { 2325 if (mRenderProfiler == null) { 2326 mRenderProfiler = new Choreographer.FrameCallback() { 2327 @Override 2328 public void doFrame(long frameTimeNanos) { 2329 mDirty.set(0, 0, mWidth, mHeight); 2330 scheduleTraversals(); 2331 if (mRenderProfilingEnabled) { 2332 mChoreographer.postFrameCallback(mRenderProfiler); 2333 } 2334 } 2335 }; 2336 } 2337 mChoreographer.postFrameCallback(mRenderProfiler); 2338 } else { 2339 mRenderProfiler = null; 2340 } 2341 } 2342 } 2343 2344 /** 2345 * Called from draw() when DEBUG_FPS is enabled 2346 */ 2347 private void trackFPS() { 2348 // Tracks frames per second drawn. First value in a series of draws may be bogus 2349 // because it down not account for the intervening idle time 2350 long nowTime = System.currentTimeMillis(); 2351 if (mFpsStartTime < 0) { 2352 mFpsStartTime = mFpsPrevTime = nowTime; 2353 mFpsNumFrames = 0; 2354 } else { 2355 ++mFpsNumFrames; 2356 String thisHash = Integer.toHexString(System.identityHashCode(this)); 2357 long frameTime = nowTime - mFpsPrevTime; 2358 long totalTime = nowTime - mFpsStartTime; 2359 Log.v(TAG, "0x" + thisHash + "\tFrame time:\t" + frameTime); 2360 mFpsPrevTime = nowTime; 2361 if (totalTime > 1000) { 2362 float fps = (float) mFpsNumFrames * 1000 / totalTime; 2363 Log.v(TAG, "0x" + thisHash + "\tFPS:\t" + fps); 2364 mFpsStartTime = nowTime; 2365 mFpsNumFrames = 0; 2366 } 2367 } 2368 } 2369 2370 private void performDraw() { 2371 if (mAttachInfo.mDisplayState == Display.STATE_OFF && !mReportNextDraw) { 2372 return; 2373 } 2374 2375 final boolean fullRedrawNeeded = mFullRedrawNeeded; 2376 mFullRedrawNeeded = false; 2377 2378 mIsDrawing = true; 2379 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "draw"); 2380 try { 2381 draw(fullRedrawNeeded); 2382 } finally { 2383 mIsDrawing = false; 2384 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2385 } 2386 2387 // For whatever reason we didn't create a HardwareRenderer, end any 2388 // hardware animations that are now dangling 2389 if (mAttachInfo.mPendingAnimatingRenderNodes != null) { 2390 final int count = mAttachInfo.mPendingAnimatingRenderNodes.size(); 2391 for (int i = 0; i < count; i++) { 2392 mAttachInfo.mPendingAnimatingRenderNodes.get(i).endAllAnimators(); 2393 } 2394 mAttachInfo.mPendingAnimatingRenderNodes.clear(); 2395 } 2396 2397 if (mReportNextDraw) { 2398 mReportNextDraw = false; 2399 if (mAttachInfo.mHardwareRenderer != null) { 2400 mAttachInfo.mHardwareRenderer.fence(); 2401 } 2402 2403 if (LOCAL_LOGV) { 2404 Log.v(TAG, "FINISHED DRAWING: " + mWindowAttributes.getTitle()); 2405 } 2406 if (mSurfaceHolder != null && mSurface.isValid()) { 2407 mSurfaceHolderCallback.surfaceRedrawNeeded(mSurfaceHolder); 2408 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 2409 if (callbacks != null) { 2410 for (SurfaceHolder.Callback c : callbacks) { 2411 if (c instanceof SurfaceHolder.Callback2) { 2412 ((SurfaceHolder.Callback2)c).surfaceRedrawNeeded( 2413 mSurfaceHolder); 2414 } 2415 } 2416 } 2417 } 2418 try { 2419 mWindowSession.finishDrawing(mWindow); 2420 } catch (RemoteException e) { 2421 } 2422 } 2423 } 2424 2425 private void draw(boolean fullRedrawNeeded) { 2426 Surface surface = mSurface; 2427 if (!surface.isValid()) { 2428 return; 2429 } 2430 2431 if (DEBUG_FPS) { 2432 trackFPS(); 2433 } 2434 2435 if (!sFirstDrawComplete) { 2436 synchronized (sFirstDrawHandlers) { 2437 sFirstDrawComplete = true; 2438 final int count = sFirstDrawHandlers.size(); 2439 for (int i = 0; i< count; i++) { 2440 mHandler.post(sFirstDrawHandlers.get(i)); 2441 } 2442 } 2443 } 2444 2445 scrollToRectOrFocus(null, false); 2446 2447 if (mAttachInfo.mViewScrollChanged) { 2448 mAttachInfo.mViewScrollChanged = false; 2449 mAttachInfo.mTreeObserver.dispatchOnScrollChanged(); 2450 } 2451 2452 boolean animating = mScroller != null && mScroller.computeScrollOffset(); 2453 final int curScrollY; 2454 if (animating) { 2455 curScrollY = mScroller.getCurrY(); 2456 } else { 2457 curScrollY = mScrollY; 2458 } 2459 if (mCurScrollY != curScrollY) { 2460 mCurScrollY = curScrollY; 2461 fullRedrawNeeded = true; 2462 if (mView instanceof RootViewSurfaceTaker) { 2463 ((RootViewSurfaceTaker) mView).onRootViewScrollYChanged(mCurScrollY); 2464 } 2465 } 2466 2467 final float appScale = mAttachInfo.mApplicationScale; 2468 final boolean scalingRequired = mAttachInfo.mScalingRequired; 2469 2470 int resizeAlpha = 0; 2471 if (mResizeBuffer != null) { 2472 long deltaTime = SystemClock.uptimeMillis() - mResizeBufferStartTime; 2473 if (deltaTime < mResizeBufferDuration) { 2474 float amt = deltaTime/(float) mResizeBufferDuration; 2475 amt = mResizeInterpolator.getInterpolation(amt); 2476 animating = true; 2477 resizeAlpha = 255 - (int)(amt*255); 2478 } else { 2479 disposeResizeBuffer(); 2480 } 2481 } 2482 2483 final Rect dirty = mDirty; 2484 if (mSurfaceHolder != null) { 2485 // The app owns the surface, we won't draw. 2486 dirty.setEmpty(); 2487 if (animating) { 2488 if (mScroller != null) { 2489 mScroller.abortAnimation(); 2490 } 2491 disposeResizeBuffer(); 2492 } 2493 return; 2494 } 2495 2496 if (fullRedrawNeeded) { 2497 mAttachInfo.mIgnoreDirtyState = true; 2498 dirty.set(0, 0, (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 2499 } 2500 2501 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2502 Log.v(TAG, "Draw " + mView + "/" 2503 + mWindowAttributes.getTitle() 2504 + ": dirty={" + dirty.left + "," + dirty.top 2505 + "," + dirty.right + "," + dirty.bottom + "} surface=" 2506 + surface + " surface.isValid()=" + surface.isValid() + ", appScale:" + 2507 appScale + ", width=" + mWidth + ", height=" + mHeight); 2508 } 2509 2510 mAttachInfo.mTreeObserver.dispatchOnDraw(); 2511 2512 int xOffset = 0; 2513 int yOffset = curScrollY; 2514 final WindowManager.LayoutParams params = mWindowAttributes; 2515 final Rect surfaceInsets = params != null ? params.surfaceInsets : null; 2516 if (surfaceInsets != null) { 2517 xOffset -= surfaceInsets.left; 2518 yOffset -= surfaceInsets.top; 2519 2520 // Offset dirty rect for surface insets. 2521 dirty.offset(surfaceInsets.left, surfaceInsets.right); 2522 } 2523 2524 boolean accessibilityFocusDirty = false; 2525 final Drawable drawable = mAttachInfo.mAccessibilityFocusDrawable; 2526 if (drawable != null) { 2527 final Rect bounds = mAttachInfo.mTmpInvalRect; 2528 final boolean hasFocus = getAccessibilityFocusedRect(bounds); 2529 if (!hasFocus) { 2530 bounds.setEmpty(); 2531 } 2532 if (!bounds.equals(drawable.getBounds())) { 2533 accessibilityFocusDirty = true; 2534 } 2535 } 2536 2537 mAttachInfo.mDrawingTime = 2538 mChoreographer.getFrameTimeNanos() / TimeUtils.NANOS_PER_MS; 2539 2540 if (!dirty.isEmpty() || mIsAnimating || accessibilityFocusDirty) { 2541 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled()) { 2542 // If accessibility focus moved, always invalidate the root. 2543 boolean invalidateRoot = accessibilityFocusDirty; 2544 2545 // Draw with hardware renderer. 2546 mIsAnimating = false; 2547 2548 if (mHardwareYOffset != yOffset || mHardwareXOffset != xOffset) { 2549 mHardwareYOffset = yOffset; 2550 mHardwareXOffset = xOffset; 2551 invalidateRoot = true; 2552 } 2553 mResizeAlpha = resizeAlpha; 2554 2555 if (invalidateRoot) { 2556 mAttachInfo.mHardwareRenderer.invalidateRoot(); 2557 } 2558 2559 dirty.setEmpty(); 2560 2561 mBlockResizeBuffer = false; 2562 mAttachInfo.mHardwareRenderer.draw(mView, mAttachInfo, this); 2563 } else { 2564 // If we get here with a disabled & requested hardware renderer, something went 2565 // wrong (an invalidate posted right before we destroyed the hardware surface 2566 // for instance) so we should just bail out. Locking the surface with software 2567 // rendering at this point would lock it forever and prevent hardware renderer 2568 // from doing its job when it comes back. 2569 // Before we request a new frame we must however attempt to reinitiliaze the 2570 // hardware renderer if it's in requested state. This would happen after an 2571 // eglTerminate() for instance. 2572 if (mAttachInfo.mHardwareRenderer != null && 2573 !mAttachInfo.mHardwareRenderer.isEnabled() && 2574 mAttachInfo.mHardwareRenderer.isRequested()) { 2575 2576 try { 2577 mAttachInfo.mHardwareRenderer.initializeIfNeeded( 2578 mWidth, mHeight, mSurface, surfaceInsets); 2579 } catch (OutOfResourcesException e) { 2580 handleOutOfResourcesException(e); 2581 return; 2582 } 2583 2584 mFullRedrawNeeded = true; 2585 scheduleTraversals(); 2586 return; 2587 } 2588 2589 if (!drawSoftware(surface, mAttachInfo, xOffset, yOffset, scalingRequired, dirty)) { 2590 return; 2591 } 2592 } 2593 } 2594 2595 if (animating) { 2596 mFullRedrawNeeded = true; 2597 scheduleTraversals(); 2598 } 2599 } 2600 2601 /** 2602 * @return true if drawing was successful, false if an error occurred 2603 */ 2604 private boolean drawSoftware(Surface surface, AttachInfo attachInfo, int xoff, int yoff, 2605 boolean scalingRequired, Rect dirty) { 2606 2607 // Draw with software renderer. 2608 final Canvas canvas; 2609 try { 2610 final int left = dirty.left; 2611 final int top = dirty.top; 2612 final int right = dirty.right; 2613 final int bottom = dirty.bottom; 2614 2615 canvas = mSurface.lockCanvas(dirty); 2616 2617 // The dirty rectangle can be modified by Surface.lockCanvas() 2618 //noinspection ConstantConditions 2619 if (left != dirty.left || top != dirty.top || right != dirty.right 2620 || bottom != dirty.bottom) { 2621 attachInfo.mIgnoreDirtyState = true; 2622 } 2623 2624 // TODO: Do this in native 2625 canvas.setDensity(mDensity); 2626 } catch (Surface.OutOfResourcesException e) { 2627 handleOutOfResourcesException(e); 2628 return false; 2629 } catch (IllegalArgumentException e) { 2630 Log.e(TAG, "Could not lock surface", e); 2631 // Don't assume this is due to out of memory, it could be 2632 // something else, and if it is something else then we could 2633 // kill stuff (or ourself) for no reason. 2634 mLayoutRequested = true; // ask wm for a new surface next time. 2635 return false; 2636 } 2637 2638 try { 2639 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2640 Log.v(TAG, "Surface " + surface + " drawing to bitmap w=" 2641 + canvas.getWidth() + ", h=" + canvas.getHeight()); 2642 //canvas.drawARGB(255, 255, 0, 0); 2643 } 2644 2645 // If this bitmap's format includes an alpha channel, we 2646 // need to clear it before drawing so that the child will 2647 // properly re-composite its drawing on a transparent 2648 // background. This automatically respects the clip/dirty region 2649 // or 2650 // If we are applying an offset, we need to clear the area 2651 // where the offset doesn't appear to avoid having garbage 2652 // left in the blank areas. 2653 if (!canvas.isOpaque() || yoff != 0 || xoff != 0) { 2654 canvas.drawColor(0, PorterDuff.Mode.CLEAR); 2655 } 2656 2657 dirty.setEmpty(); 2658 mIsAnimating = false; 2659 mView.mPrivateFlags |= View.PFLAG_DRAWN; 2660 2661 if (DEBUG_DRAW) { 2662 Context cxt = mView.getContext(); 2663 Log.i(TAG, "Drawing: package:" + cxt.getPackageName() + 2664 ", metrics=" + cxt.getResources().getDisplayMetrics() + 2665 ", compatibilityInfo=" + cxt.getResources().getCompatibilityInfo()); 2666 } 2667 try { 2668 canvas.translate(-xoff, -yoff); 2669 if (mTranslator != null) { 2670 mTranslator.translateCanvas(canvas); 2671 } 2672 canvas.setScreenDensity(scalingRequired ? mNoncompatDensity : 0); 2673 attachInfo.mSetIgnoreDirtyState = false; 2674 2675 mView.draw(canvas); 2676 2677 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2678 } finally { 2679 if (!attachInfo.mSetIgnoreDirtyState) { 2680 // Only clear the flag if it was not set during the mView.draw() call 2681 attachInfo.mIgnoreDirtyState = false; 2682 } 2683 } 2684 } finally { 2685 try { 2686 surface.unlockCanvasAndPost(canvas); 2687 } catch (IllegalArgumentException e) { 2688 Log.e(TAG, "Could not unlock surface", e); 2689 mLayoutRequested = true; // ask wm for a new surface next time. 2690 //noinspection ReturnInsideFinallyBlock 2691 return false; 2692 } 2693 2694 if (LOCAL_LOGV) { 2695 Log.v(TAG, "Surface " + surface + " unlockCanvasAndPost"); 2696 } 2697 } 2698 return true; 2699 } 2700 2701 /** 2702 * We want to draw a highlight around the current accessibility focused. 2703 * Since adding a style for all possible view is not a viable option we 2704 * have this specialized drawing method. 2705 * 2706 * Note: We are doing this here to be able to draw the highlight for 2707 * virtual views in addition to real ones. 2708 * 2709 * @param canvas The canvas on which to draw. 2710 */ 2711 private void drawAccessibilityFocusedDrawableIfNeeded(Canvas canvas) { 2712 final Rect bounds = mAttachInfo.mTmpInvalRect; 2713 if (getAccessibilityFocusedRect(bounds)) { 2714 final Drawable drawable = getAccessibilityFocusedDrawable(); 2715 if (drawable != null) { 2716 drawable.setBounds(bounds); 2717 drawable.draw(canvas); 2718 } 2719 } else if (mAttachInfo.mAccessibilityFocusDrawable != null) { 2720 mAttachInfo.mAccessibilityFocusDrawable.setBounds(0, 0, 0, 0); 2721 } 2722 } 2723 2724 private boolean getAccessibilityFocusedRect(Rect bounds) { 2725 final AccessibilityManager manager = AccessibilityManager.getInstance(mView.mContext); 2726 if (!manager.isEnabled() || !manager.isTouchExplorationEnabled()) { 2727 return false; 2728 } 2729 2730 final View host = mAccessibilityFocusedHost; 2731 if (host == null || host.mAttachInfo == null) { 2732 return false; 2733 } 2734 2735 final AccessibilityNodeProvider provider = host.getAccessibilityNodeProvider(); 2736 if (provider == null) { 2737 host.getBoundsOnScreen(bounds, true); 2738 } else if (mAccessibilityFocusedVirtualView != null) { 2739 mAccessibilityFocusedVirtualView.getBoundsInScreen(bounds); 2740 } else { 2741 return false; 2742 } 2743 2744 final AttachInfo attachInfo = mAttachInfo; 2745 bounds.offset(-attachInfo.mWindowLeft, -attachInfo.mWindowTop); 2746 bounds.intersect(0, 0, attachInfo.mViewRootImpl.mWidth, attachInfo.mViewRootImpl.mHeight); 2747 return !bounds.isEmpty(); 2748 } 2749 2750 private Drawable getAccessibilityFocusedDrawable() { 2751 // Lazily load the accessibility focus drawable. 2752 if (mAttachInfo.mAccessibilityFocusDrawable == null) { 2753 final TypedValue value = new TypedValue(); 2754 final boolean resolved = mView.mContext.getTheme().resolveAttribute( 2755 R.attr.accessibilityFocusedDrawable, value, true); 2756 if (resolved) { 2757 mAttachInfo.mAccessibilityFocusDrawable = 2758 mView.mContext.getDrawable(value.resourceId); 2759 } 2760 } 2761 return mAttachInfo.mAccessibilityFocusDrawable; 2762 } 2763 2764 /** 2765 * @hide 2766 */ 2767 public void setDrawDuringWindowsAnimating(boolean value) { 2768 mDrawDuringWindowsAnimating = value; 2769 if (value) { 2770 handleDispatchDoneAnimating(); 2771 } 2772 } 2773 2774 boolean scrollToRectOrFocus(Rect rectangle, boolean immediate) { 2775 final Rect ci = mAttachInfo.mContentInsets; 2776 final Rect vi = mAttachInfo.mVisibleInsets; 2777 int scrollY = 0; 2778 boolean handled = false; 2779 2780 if (vi.left > ci.left || vi.top > ci.top 2781 || vi.right > ci.right || vi.bottom > ci.bottom) { 2782 // We'll assume that we aren't going to change the scroll 2783 // offset, since we want to avoid that unless it is actually 2784 // going to make the focus visible... otherwise we scroll 2785 // all over the place. 2786 scrollY = mScrollY; 2787 // We can be called for two different situations: during a draw, 2788 // to update the scroll position if the focus has changed (in which 2789 // case 'rectangle' is null), or in response to a 2790 // requestChildRectangleOnScreen() call (in which case 'rectangle' 2791 // is non-null and we just want to scroll to whatever that 2792 // rectangle is). 2793 final View focus = mView.findFocus(); 2794 if (focus == null) { 2795 return false; 2796 } 2797 View lastScrolledFocus = (mLastScrolledFocus != null) ? mLastScrolledFocus.get() : null; 2798 if (focus != lastScrolledFocus) { 2799 // If the focus has changed, then ignore any requests to scroll 2800 // to a rectangle; first we want to make sure the entire focus 2801 // view is visible. 2802 rectangle = null; 2803 } 2804 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Eval scroll: focus=" + focus 2805 + " rectangle=" + rectangle + " ci=" + ci 2806 + " vi=" + vi); 2807 if (focus == lastScrolledFocus && !mScrollMayChange && rectangle == null) { 2808 // Optimization: if the focus hasn't changed since last 2809 // time, and no layout has happened, then just leave things 2810 // as they are. 2811 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Keeping scroll y=" 2812 + mScrollY + " vi=" + vi.toShortString()); 2813 } else { 2814 // We need to determine if the currently focused view is 2815 // within the visible part of the window and, if not, apply 2816 // a pan so it can be seen. 2817 mLastScrolledFocus = new WeakReference<View>(focus); 2818 mScrollMayChange = false; 2819 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Need to scroll?"); 2820 // Try to find the rectangle from the focus view. 2821 if (focus.getGlobalVisibleRect(mVisRect, null)) { 2822 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Root w=" 2823 + mView.getWidth() + " h=" + mView.getHeight() 2824 + " ci=" + ci.toShortString() 2825 + " vi=" + vi.toShortString()); 2826 if (rectangle == null) { 2827 focus.getFocusedRect(mTempRect); 2828 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Focus " + focus 2829 + ": focusRect=" + mTempRect.toShortString()); 2830 if (mView instanceof ViewGroup) { 2831 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 2832 focus, mTempRect); 2833 } 2834 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2835 "Focus in window: focusRect=" 2836 + mTempRect.toShortString() 2837 + " visRect=" + mVisRect.toShortString()); 2838 } else { 2839 mTempRect.set(rectangle); 2840 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2841 "Request scroll to rect: " 2842 + mTempRect.toShortString() 2843 + " visRect=" + mVisRect.toShortString()); 2844 } 2845 if (mTempRect.intersect(mVisRect)) { 2846 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2847 "Focus window visible rect: " 2848 + mTempRect.toShortString()); 2849 if (mTempRect.height() > 2850 (mView.getHeight()-vi.top-vi.bottom)) { 2851 // If the focus simply is not going to fit, then 2852 // best is probably just to leave things as-is. 2853 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2854 "Too tall; leaving scrollY=" + scrollY); 2855 } else if ((mTempRect.top-scrollY) < vi.top) { 2856 scrollY -= vi.top - (mTempRect.top-scrollY); 2857 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2858 "Top covered; scrollY=" + scrollY); 2859 } else if ((mTempRect.bottom-scrollY) 2860 > (mView.getHeight()-vi.bottom)) { 2861 scrollY += (mTempRect.bottom-scrollY) 2862 - (mView.getHeight()-vi.bottom); 2863 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2864 "Bottom covered; scrollY=" + scrollY); 2865 } 2866 handled = true; 2867 } 2868 } 2869 } 2870 } 2871 2872 if (scrollY != mScrollY) { 2873 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Pan scroll changed: old=" 2874 + mScrollY + " , new=" + scrollY); 2875 if (!immediate && mResizeBuffer == null) { 2876 if (mScroller == null) { 2877 mScroller = new Scroller(mView.getContext()); 2878 } 2879 mScroller.startScroll(0, mScrollY, 0, scrollY-mScrollY); 2880 } else if (mScroller != null) { 2881 mScroller.abortAnimation(); 2882 } 2883 mScrollY = scrollY; 2884 } 2885 2886 return handled; 2887 } 2888 2889 /** 2890 * @hide 2891 */ 2892 public View getAccessibilityFocusedHost() { 2893 return mAccessibilityFocusedHost; 2894 } 2895 2896 /** 2897 * @hide 2898 */ 2899 public AccessibilityNodeInfo getAccessibilityFocusedVirtualView() { 2900 return mAccessibilityFocusedVirtualView; 2901 } 2902 2903 void setAccessibilityFocus(View view, AccessibilityNodeInfo node) { 2904 // If we have a virtual view with accessibility focus we need 2905 // to clear the focus and invalidate the virtual view bounds. 2906 if (mAccessibilityFocusedVirtualView != null) { 2907 2908 AccessibilityNodeInfo focusNode = mAccessibilityFocusedVirtualView; 2909 View focusHost = mAccessibilityFocusedHost; 2910 2911 // Wipe the state of the current accessibility focus since 2912 // the call into the provider to clear accessibility focus 2913 // will fire an accessibility event which will end up calling 2914 // this method and we want to have clean state when this 2915 // invocation happens. 2916 mAccessibilityFocusedHost = null; 2917 mAccessibilityFocusedVirtualView = null; 2918 2919 // Clear accessibility focus on the host after clearing state since 2920 // this method may be reentrant. 2921 focusHost.clearAccessibilityFocusNoCallbacks(); 2922 2923 AccessibilityNodeProvider provider = focusHost.getAccessibilityNodeProvider(); 2924 if (provider != null) { 2925 // Invalidate the area of the cleared accessibility focus. 2926 focusNode.getBoundsInParent(mTempRect); 2927 focusHost.invalidate(mTempRect); 2928 // Clear accessibility focus in the virtual node. 2929 final int virtualNodeId = AccessibilityNodeInfo.getVirtualDescendantId( 2930 focusNode.getSourceNodeId()); 2931 provider.performAction(virtualNodeId, 2932 AccessibilityNodeInfo.ACTION_CLEAR_ACCESSIBILITY_FOCUS, null); 2933 } 2934 focusNode.recycle(); 2935 } 2936 if (mAccessibilityFocusedHost != null) { 2937 // Clear accessibility focus in the view. 2938 mAccessibilityFocusedHost.clearAccessibilityFocusNoCallbacks(); 2939 } 2940 2941 // Set the new focus host and node. 2942 mAccessibilityFocusedHost = view; 2943 mAccessibilityFocusedVirtualView = node; 2944 2945 if (mAttachInfo.mHardwareRenderer != null) { 2946 mAttachInfo.mHardwareRenderer.invalidateRoot(); 2947 } 2948 } 2949 2950 @Override 2951 public void requestChildFocus(View child, View focused) { 2952 if (DEBUG_INPUT_RESIZE) { 2953 Log.v(TAG, "Request child focus: focus now " + focused); 2954 } 2955 checkThread(); 2956 scheduleTraversals(); 2957 } 2958 2959 @Override 2960 public void clearChildFocus(View child) { 2961 if (DEBUG_INPUT_RESIZE) { 2962 Log.v(TAG, "Clearing child focus"); 2963 } 2964 checkThread(); 2965 scheduleTraversals(); 2966 } 2967 2968 @Override 2969 public ViewParent getParentForAccessibility() { 2970 return null; 2971 } 2972 2973 @Override 2974 public void focusableViewAvailable(View v) { 2975 checkThread(); 2976 if (mView != null) { 2977 if (!mView.hasFocus()) { 2978 v.requestFocus(); 2979 } else { 2980 // the one case where will transfer focus away from the current one 2981 // is if the current view is a view group that prefers to give focus 2982 // to its children first AND the view is a descendant of it. 2983 View focused = mView.findFocus(); 2984 if (focused instanceof ViewGroup) { 2985 ViewGroup group = (ViewGroup) focused; 2986 if (group.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 2987 && isViewDescendantOf(v, focused)) { 2988 v.requestFocus(); 2989 } 2990 } 2991 } 2992 } 2993 } 2994 2995 @Override 2996 public void recomputeViewAttributes(View child) { 2997 checkThread(); 2998 if (mView == child) { 2999 mAttachInfo.mRecomputeGlobalAttributes = true; 3000 if (!mWillDrawSoon) { 3001 scheduleTraversals(); 3002 } 3003 } 3004 } 3005 3006 void dispatchDetachedFromWindow() { 3007 if (mView != null && mView.mAttachInfo != null) { 3008 mAttachInfo.mTreeObserver.dispatchOnWindowAttachedChange(false); 3009 mView.dispatchDetachedFromWindow(); 3010 } 3011 3012 mAccessibilityInteractionConnectionManager.ensureNoConnection(); 3013 mAccessibilityManager.removeAccessibilityStateChangeListener( 3014 mAccessibilityInteractionConnectionManager); 3015 mAccessibilityManager.removeHighTextContrastStateChangeListener( 3016 mHighContrastTextManager); 3017 removeSendWindowContentChangedCallback(); 3018 3019 destroyHardwareRenderer(); 3020 3021 setAccessibilityFocus(null, null); 3022 3023 mView.assignParent(null); 3024 mView = null; 3025 mAttachInfo.mRootView = null; 3026 3027 mSurface.release(); 3028 3029 if (mInputQueueCallback != null && mInputQueue != null) { 3030 mInputQueueCallback.onInputQueueDestroyed(mInputQueue); 3031 mInputQueue.dispose(); 3032 mInputQueueCallback = null; 3033 mInputQueue = null; 3034 } 3035 if (mInputEventReceiver != null) { 3036 mInputEventReceiver.dispose(); 3037 mInputEventReceiver = null; 3038 } 3039 try { 3040 mWindowSession.remove(mWindow); 3041 } catch (RemoteException e) { 3042 } 3043 3044 // Dispose the input channel after removing the window so the Window Manager 3045 // doesn't interpret the input channel being closed as an abnormal termination. 3046 if (mInputChannel != null) { 3047 mInputChannel.dispose(); 3048 mInputChannel = null; 3049 } 3050 3051 mDisplayManager.unregisterDisplayListener(mDisplayListener); 3052 3053 unscheduleTraversals(); 3054 } 3055 3056 void updateConfiguration(Configuration config, boolean force) { 3057 if (DEBUG_CONFIGURATION) Log.v(TAG, 3058 "Applying new config to window " 3059 + mWindowAttributes.getTitle() 3060 + ": " + config); 3061 3062 CompatibilityInfo ci = mDisplayAdjustments.getCompatibilityInfo(); 3063 if (!ci.equals(CompatibilityInfo.DEFAULT_COMPATIBILITY_INFO)) { 3064 config = new Configuration(config); 3065 ci.applyToConfiguration(mNoncompatDensity, config); 3066 } 3067 3068 synchronized (sConfigCallbacks) { 3069 for (int i=sConfigCallbacks.size()-1; i>=0; i--) { 3070 sConfigCallbacks.get(i).onConfigurationChanged(config); 3071 } 3072 } 3073 if (mView != null) { 3074 // At this point the resources have been updated to 3075 // have the most recent config, whatever that is. Use 3076 // the one in them which may be newer. 3077 config = mView.getResources().getConfiguration(); 3078 if (force || mLastConfiguration.diff(config) != 0) { 3079 final int lastLayoutDirection = mLastConfiguration.getLayoutDirection(); 3080 final int currentLayoutDirection = config.getLayoutDirection(); 3081 mLastConfiguration.setTo(config); 3082 if (lastLayoutDirection != currentLayoutDirection && 3083 mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 3084 mView.setLayoutDirection(currentLayoutDirection); 3085 } 3086 mView.dispatchConfigurationChanged(config); 3087 } 3088 } 3089 } 3090 3091 /** 3092 * Return true if child is an ancestor of parent, (or equal to the parent). 3093 */ 3094 public static boolean isViewDescendantOf(View child, View parent) { 3095 if (child == parent) { 3096 return true; 3097 } 3098 3099 final ViewParent theParent = child.getParent(); 3100 return (theParent instanceof ViewGroup) && isViewDescendantOf((View) theParent, parent); 3101 } 3102 3103 private final static int MSG_INVALIDATE = 1; 3104 private final static int MSG_INVALIDATE_RECT = 2; 3105 private final static int MSG_DIE = 3; 3106 private final static int MSG_RESIZED = 4; 3107 private final static int MSG_RESIZED_REPORT = 5; 3108 private final static int MSG_WINDOW_FOCUS_CHANGED = 6; 3109 private final static int MSG_DISPATCH_INPUT_EVENT = 7; 3110 private final static int MSG_DISPATCH_APP_VISIBILITY = 8; 3111 private final static int MSG_DISPATCH_GET_NEW_SURFACE = 9; 3112 private final static int MSG_DISPATCH_KEY_FROM_IME = 11; 3113 private final static int MSG_FINISH_INPUT_CONNECTION = 12; 3114 private final static int MSG_CHECK_FOCUS = 13; 3115 private final static int MSG_CLOSE_SYSTEM_DIALOGS = 14; 3116 private final static int MSG_DISPATCH_DRAG_EVENT = 15; 3117 private final static int MSG_DISPATCH_DRAG_LOCATION_EVENT = 16; 3118 private final static int MSG_DISPATCH_SYSTEM_UI_VISIBILITY = 17; 3119 private final static int MSG_UPDATE_CONFIGURATION = 18; 3120 private final static int MSG_PROCESS_INPUT_EVENTS = 19; 3121 private final static int MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST = 21; 3122 private final static int MSG_DISPATCH_DONE_ANIMATING = 22; 3123 private final static int MSG_INVALIDATE_WORLD = 23; 3124 private final static int MSG_WINDOW_MOVED = 24; 3125 private final static int MSG_SYNTHESIZE_INPUT_EVENT = 25; 3126 private final static int MSG_DISPATCH_WINDOW_SHOWN = 26; 3127 3128 final class ViewRootHandler extends Handler { 3129 @Override 3130 public String getMessageName(Message message) { 3131 switch (message.what) { 3132 case MSG_INVALIDATE: 3133 return "MSG_INVALIDATE"; 3134 case MSG_INVALIDATE_RECT: 3135 return "MSG_INVALIDATE_RECT"; 3136 case MSG_DIE: 3137 return "MSG_DIE"; 3138 case MSG_RESIZED: 3139 return "MSG_RESIZED"; 3140 case MSG_RESIZED_REPORT: 3141 return "MSG_RESIZED_REPORT"; 3142 case MSG_WINDOW_FOCUS_CHANGED: 3143 return "MSG_WINDOW_FOCUS_CHANGED"; 3144 case MSG_DISPATCH_INPUT_EVENT: 3145 return "MSG_DISPATCH_INPUT_EVENT"; 3146 case MSG_DISPATCH_APP_VISIBILITY: 3147 return "MSG_DISPATCH_APP_VISIBILITY"; 3148 case MSG_DISPATCH_GET_NEW_SURFACE: 3149 return "MSG_DISPATCH_GET_NEW_SURFACE"; 3150 case MSG_DISPATCH_KEY_FROM_IME: 3151 return "MSG_DISPATCH_KEY_FROM_IME"; 3152 case MSG_FINISH_INPUT_CONNECTION: 3153 return "MSG_FINISH_INPUT_CONNECTION"; 3154 case MSG_CHECK_FOCUS: 3155 return "MSG_CHECK_FOCUS"; 3156 case MSG_CLOSE_SYSTEM_DIALOGS: 3157 return "MSG_CLOSE_SYSTEM_DIALOGS"; 3158 case MSG_DISPATCH_DRAG_EVENT: 3159 return "MSG_DISPATCH_DRAG_EVENT"; 3160 case MSG_DISPATCH_DRAG_LOCATION_EVENT: 3161 return "MSG_DISPATCH_DRAG_LOCATION_EVENT"; 3162 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: 3163 return "MSG_DISPATCH_SYSTEM_UI_VISIBILITY"; 3164 case MSG_UPDATE_CONFIGURATION: 3165 return "MSG_UPDATE_CONFIGURATION"; 3166 case MSG_PROCESS_INPUT_EVENTS: 3167 return "MSG_PROCESS_INPUT_EVENTS"; 3168 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: 3169 return "MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST"; 3170 case MSG_DISPATCH_DONE_ANIMATING: 3171 return "MSG_DISPATCH_DONE_ANIMATING"; 3172 case MSG_WINDOW_MOVED: 3173 return "MSG_WINDOW_MOVED"; 3174 case MSG_SYNTHESIZE_INPUT_EVENT: 3175 return "MSG_SYNTHESIZE_INPUT_EVENT"; 3176 case MSG_DISPATCH_WINDOW_SHOWN: 3177 return "MSG_DISPATCH_WINDOW_SHOWN"; 3178 } 3179 return super.getMessageName(message); 3180 } 3181 3182 @Override 3183 public void handleMessage(Message msg) { 3184 switch (msg.what) { 3185 case MSG_INVALIDATE: 3186 ((View) msg.obj).invalidate(); 3187 break; 3188 case MSG_INVALIDATE_RECT: 3189 final View.AttachInfo.InvalidateInfo info = (View.AttachInfo.InvalidateInfo) msg.obj; 3190 info.target.invalidate(info.left, info.top, info.right, info.bottom); 3191 info.recycle(); 3192 break; 3193 case MSG_PROCESS_INPUT_EVENTS: 3194 mProcessInputEventsScheduled = false; 3195 doProcessInputEvents(); 3196 break; 3197 case MSG_DISPATCH_APP_VISIBILITY: 3198 handleAppVisibility(msg.arg1 != 0); 3199 break; 3200 case MSG_DISPATCH_GET_NEW_SURFACE: 3201 handleGetNewSurface(); 3202 break; 3203 case MSG_RESIZED: { 3204 // Recycled in the fall through... 3205 SomeArgs args = (SomeArgs) msg.obj; 3206 if (mWinFrame.equals(args.arg1) 3207 && mPendingOverscanInsets.equals(args.arg5) 3208 && mPendingContentInsets.equals(args.arg2) 3209 && mPendingStableInsets.equals(args.arg6) 3210 && mPendingVisibleInsets.equals(args.arg3) 3211 && args.arg4 == null) { 3212 break; 3213 } 3214 } // fall through... 3215 case MSG_RESIZED_REPORT: 3216 if (mAdded) { 3217 SomeArgs args = (SomeArgs) msg.obj; 3218 3219 Configuration config = (Configuration) args.arg4; 3220 if (config != null) { 3221 updateConfiguration(config, false); 3222 } 3223 3224 mWinFrame.set((Rect) args.arg1); 3225 mPendingOverscanInsets.set((Rect) args.arg5); 3226 mPendingContentInsets.set((Rect) args.arg2); 3227 mPendingStableInsets.set((Rect) args.arg6); 3228 mPendingVisibleInsets.set((Rect) args.arg3); 3229 3230 args.recycle(); 3231 3232 if (msg.what == MSG_RESIZED_REPORT) { 3233 mReportNextDraw = true; 3234 } 3235 3236 requestLayout(); 3237 } 3238 break; 3239 case MSG_WINDOW_MOVED: 3240 if (mAdded) { 3241 final int w = mWinFrame.width(); 3242 final int h = mWinFrame.height(); 3243 final int l = msg.arg1; 3244 final int t = msg.arg2; 3245 mWinFrame.left = l; 3246 mWinFrame.right = l + w; 3247 mWinFrame.top = t; 3248 mWinFrame.bottom = t + h; 3249 3250 requestLayout(); 3251 } 3252 break; 3253 case MSG_WINDOW_FOCUS_CHANGED: { 3254 if (mAdded) { 3255 boolean hasWindowFocus = msg.arg1 != 0; 3256 mAttachInfo.mHasWindowFocus = hasWindowFocus; 3257 3258 profileRendering(hasWindowFocus); 3259 3260 if (hasWindowFocus) { 3261 boolean inTouchMode = msg.arg2 != 0; 3262 ensureTouchModeLocally(inTouchMode); 3263 3264 if (mAttachInfo.mHardwareRenderer != null && mSurface.isValid()){ 3265 mFullRedrawNeeded = true; 3266 try { 3267 final WindowManager.LayoutParams lp = mWindowAttributes; 3268 final Rect surfaceInsets = lp != null ? lp.surfaceInsets : null; 3269 mAttachInfo.mHardwareRenderer.initializeIfNeeded( 3270 mWidth, mHeight, mSurface, surfaceInsets); 3271 } catch (OutOfResourcesException e) { 3272 Log.e(TAG, "OutOfResourcesException locking surface", e); 3273 try { 3274 if (!mWindowSession.outOfMemory(mWindow)) { 3275 Slog.w(TAG, "No processes killed for memory; killing self"); 3276 Process.killProcess(Process.myPid()); 3277 } 3278 } catch (RemoteException ex) { 3279 } 3280 // Retry in a bit. 3281 sendMessageDelayed(obtainMessage(msg.what, msg.arg1, msg.arg2), 500); 3282 return; 3283 } 3284 } 3285 } 3286 3287 mLastWasImTarget = WindowManager.LayoutParams 3288 .mayUseInputMethod(mWindowAttributes.flags); 3289 3290 InputMethodManager imm = InputMethodManager.peekInstance(); 3291 if (mView != null) { 3292 if (hasWindowFocus && imm != null && mLastWasImTarget && 3293 !isInLocalFocusMode()) { 3294 imm.startGettingWindowFocus(mView); 3295 } 3296 mAttachInfo.mKeyDispatchState.reset(); 3297 mView.dispatchWindowFocusChanged(hasWindowFocus); 3298 mAttachInfo.mTreeObserver.dispatchOnWindowFocusChange(hasWindowFocus); 3299 } 3300 3301 // Note: must be done after the focus change callbacks, 3302 // so all of the view state is set up correctly. 3303 if (hasWindowFocus) { 3304 if (imm != null && mLastWasImTarget && !isInLocalFocusMode()) { 3305 imm.onWindowFocus(mView, mView.findFocus(), 3306 mWindowAttributes.softInputMode, 3307 !mHasHadWindowFocus, mWindowAttributes.flags); 3308 } 3309 // Clear the forward bit. We can just do this directly, since 3310 // the window manager doesn't care about it. 3311 mWindowAttributes.softInputMode &= 3312 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3313 ((WindowManager.LayoutParams)mView.getLayoutParams()) 3314 .softInputMode &= 3315 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3316 mHasHadWindowFocus = true; 3317 } 3318 3319 if (mView != null && mAccessibilityManager.isEnabled()) { 3320 if (hasWindowFocus) { 3321 mView.sendAccessibilityEvent( 3322 AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 3323 } 3324 } 3325 } 3326 } break; 3327 case MSG_DIE: 3328 doDie(); 3329 break; 3330 case MSG_DISPATCH_INPUT_EVENT: { 3331 SomeArgs args = (SomeArgs)msg.obj; 3332 InputEvent event = (InputEvent)args.arg1; 3333 InputEventReceiver receiver = (InputEventReceiver)args.arg2; 3334 enqueueInputEvent(event, receiver, 0, true); 3335 args.recycle(); 3336 } break; 3337 case MSG_SYNTHESIZE_INPUT_EVENT: { 3338 InputEvent event = (InputEvent)msg.obj; 3339 enqueueInputEvent(event, null, QueuedInputEvent.FLAG_UNHANDLED, true); 3340 } break; 3341 case MSG_DISPATCH_KEY_FROM_IME: { 3342 if (LOCAL_LOGV) Log.v( 3343 TAG, "Dispatching key " 3344 + msg.obj + " from IME to " + mView); 3345 KeyEvent event = (KeyEvent)msg.obj; 3346 if ((event.getFlags()&KeyEvent.FLAG_FROM_SYSTEM) != 0) { 3347 // The IME is trying to say this event is from the 3348 // system! Bad bad bad! 3349 //noinspection UnusedAssignment 3350 event = KeyEvent.changeFlags(event, event.getFlags() & 3351 ~KeyEvent.FLAG_FROM_SYSTEM); 3352 } 3353 enqueueInputEvent(event, null, QueuedInputEvent.FLAG_DELIVER_POST_IME, true); 3354 } break; 3355 case MSG_FINISH_INPUT_CONNECTION: { 3356 InputMethodManager imm = InputMethodManager.peekInstance(); 3357 if (imm != null) { 3358 imm.reportFinishInputConnection((InputConnection)msg.obj); 3359 } 3360 } break; 3361 case MSG_CHECK_FOCUS: { 3362 InputMethodManager imm = InputMethodManager.peekInstance(); 3363 if (imm != null) { 3364 imm.checkFocus(); 3365 } 3366 } break; 3367 case MSG_CLOSE_SYSTEM_DIALOGS: { 3368 if (mView != null) { 3369 mView.onCloseSystemDialogs((String)msg.obj); 3370 } 3371 } break; 3372 case MSG_DISPATCH_DRAG_EVENT: 3373 case MSG_DISPATCH_DRAG_LOCATION_EVENT: { 3374 DragEvent event = (DragEvent)msg.obj; 3375 event.mLocalState = mLocalDragState; // only present when this app called startDrag() 3376 handleDragEvent(event); 3377 } break; 3378 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: { 3379 handleDispatchSystemUiVisibilityChanged((SystemUiVisibilityInfo) msg.obj); 3380 } break; 3381 case MSG_UPDATE_CONFIGURATION: { 3382 Configuration config = (Configuration)msg.obj; 3383 if (config.isOtherSeqNewer(mLastConfiguration)) { 3384 config = mLastConfiguration; 3385 } 3386 updateConfiguration(config, false); 3387 } break; 3388 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: { 3389 setAccessibilityFocus(null, null); 3390 } break; 3391 case MSG_DISPATCH_DONE_ANIMATING: { 3392 handleDispatchDoneAnimating(); 3393 } break; 3394 case MSG_INVALIDATE_WORLD: { 3395 if (mView != null) { 3396 invalidateWorld(mView); 3397 } 3398 } break; 3399 case MSG_DISPATCH_WINDOW_SHOWN: { 3400 handleDispatchWindowShown(); 3401 } 3402 } 3403 } 3404 } 3405 3406 final ViewRootHandler mHandler = new ViewRootHandler(); 3407 3408 /** 3409 * Something in the current window tells us we need to change the touch mode. For 3410 * example, we are not in touch mode, and the user touches the screen. 3411 * 3412 * If the touch mode has changed, tell the window manager, and handle it locally. 3413 * 3414 * @param inTouchMode Whether we want to be in touch mode. 3415 * @return True if the touch mode changed and focus changed was changed as a result 3416 */ 3417 boolean ensureTouchMode(boolean inTouchMode) { 3418 if (DBG) Log.d("touchmode", "ensureTouchMode(" + inTouchMode + "), current " 3419 + "touch mode is " + mAttachInfo.mInTouchMode); 3420 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3421 3422 // tell the window manager 3423 try { 3424 if (!isInLocalFocusMode()) { 3425 mWindowSession.setInTouchMode(inTouchMode); 3426 } 3427 } catch (RemoteException e) { 3428 throw new RuntimeException(e); 3429 } 3430 3431 // handle the change 3432 return ensureTouchModeLocally(inTouchMode); 3433 } 3434 3435 /** 3436 * Ensure that the touch mode for this window is set, and if it is changing, 3437 * take the appropriate action. 3438 * @param inTouchMode Whether we want to be in touch mode. 3439 * @return True if the touch mode changed and focus changed was changed as a result 3440 */ 3441 private boolean ensureTouchModeLocally(boolean inTouchMode) { 3442 if (DBG) Log.d("touchmode", "ensureTouchModeLocally(" + inTouchMode + "), current " 3443 + "touch mode is " + mAttachInfo.mInTouchMode); 3444 3445 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3446 3447 mAttachInfo.mInTouchMode = inTouchMode; 3448 mAttachInfo.mTreeObserver.dispatchOnTouchModeChanged(inTouchMode); 3449 3450 return (inTouchMode) ? enterTouchMode() : leaveTouchMode(); 3451 } 3452 3453 private boolean enterTouchMode() { 3454 if (mView != null && mView.hasFocus()) { 3455 // note: not relying on mFocusedView here because this could 3456 // be when the window is first being added, and mFocused isn't 3457 // set yet. 3458 final View focused = mView.findFocus(); 3459 if (focused != null && !focused.isFocusableInTouchMode()) { 3460 final ViewGroup ancestorToTakeFocus = findAncestorToTakeFocusInTouchMode(focused); 3461 if (ancestorToTakeFocus != null) { 3462 // there is an ancestor that wants focus after its 3463 // descendants that is focusable in touch mode.. give it 3464 // focus 3465 return ancestorToTakeFocus.requestFocus(); 3466 } else { 3467 // There's nothing to focus. Clear and propagate through the 3468 // hierarchy, but don't attempt to place new focus. 3469 focused.clearFocusInternal(null, true, false); 3470 return true; 3471 } 3472 } 3473 } 3474 return false; 3475 } 3476 3477 /** 3478 * Find an ancestor of focused that wants focus after its descendants and is 3479 * focusable in touch mode. 3480 * @param focused The currently focused view. 3481 * @return An appropriate view, or null if no such view exists. 3482 */ 3483 private static ViewGroup findAncestorToTakeFocusInTouchMode(View focused) { 3484 ViewParent parent = focused.getParent(); 3485 while (parent instanceof ViewGroup) { 3486 final ViewGroup vgParent = (ViewGroup) parent; 3487 if (vgParent.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 3488 && vgParent.isFocusableInTouchMode()) { 3489 return vgParent; 3490 } 3491 if (vgParent.isRootNamespace()) { 3492 return null; 3493 } else { 3494 parent = vgParent.getParent(); 3495 } 3496 } 3497 return null; 3498 } 3499 3500 private boolean leaveTouchMode() { 3501 if (mView != null) { 3502 if (mView.hasFocus()) { 3503 View focusedView = mView.findFocus(); 3504 if (!(focusedView instanceof ViewGroup)) { 3505 // some view has focus, let it keep it 3506 return false; 3507 } else if (((ViewGroup) focusedView).getDescendantFocusability() != 3508 ViewGroup.FOCUS_AFTER_DESCENDANTS) { 3509 // some view group has focus, and doesn't prefer its children 3510 // over itself for focus, so let them keep it. 3511 return false; 3512 } 3513 } 3514 3515 // find the best view to give focus to in this brave new non-touch-mode 3516 // world 3517 final View focused = focusSearch(null, View.FOCUS_DOWN); 3518 if (focused != null) { 3519 return focused.requestFocus(View.FOCUS_DOWN); 3520 } 3521 } 3522 return false; 3523 } 3524 3525 /** 3526 * Base class for implementing a stage in the chain of responsibility 3527 * for processing input events. 3528 * <p> 3529 * Events are delivered to the stage by the {@link #deliver} method. The stage 3530 * then has the choice of finishing the event or forwarding it to the next stage. 3531 * </p> 3532 */ 3533 abstract class InputStage { 3534 private final InputStage mNext; 3535 3536 protected static final int FORWARD = 0; 3537 protected static final int FINISH_HANDLED = 1; 3538 protected static final int FINISH_NOT_HANDLED = 2; 3539 3540 /** 3541 * Creates an input stage. 3542 * @param next The next stage to which events should be forwarded. 3543 */ 3544 public InputStage(InputStage next) { 3545 mNext = next; 3546 } 3547 3548 /** 3549 * Delivers an event to be processed. 3550 */ 3551 public final void deliver(QueuedInputEvent q) { 3552 if ((q.mFlags & QueuedInputEvent.FLAG_FINISHED) != 0) { 3553 forward(q); 3554 } else if (shouldDropInputEvent(q)) { 3555 finish(q, false); 3556 } else { 3557 apply(q, onProcess(q)); 3558 } 3559 } 3560 3561 /** 3562 * Marks the the input event as finished then forwards it to the next stage. 3563 */ 3564 protected void finish(QueuedInputEvent q, boolean handled) { 3565 q.mFlags |= QueuedInputEvent.FLAG_FINISHED; 3566 if (handled) { 3567 q.mFlags |= QueuedInputEvent.FLAG_FINISHED_HANDLED; 3568 } 3569 forward(q); 3570 } 3571 3572 /** 3573 * Forwards the event to the next stage. 3574 */ 3575 protected void forward(QueuedInputEvent q) { 3576 onDeliverToNext(q); 3577 } 3578 3579 /** 3580 * Applies a result code from {@link #onProcess} to the specified event. 3581 */ 3582 protected void apply(QueuedInputEvent q, int result) { 3583 if (result == FORWARD) { 3584 forward(q); 3585 } else if (result == FINISH_HANDLED) { 3586 finish(q, true); 3587 } else if (result == FINISH_NOT_HANDLED) { 3588 finish(q, false); 3589 } else { 3590 throw new IllegalArgumentException("Invalid result: " + result); 3591 } 3592 } 3593 3594 /** 3595 * Called when an event is ready to be processed. 3596 * @return A result code indicating how the event was handled. 3597 */ 3598 protected int onProcess(QueuedInputEvent q) { 3599 return FORWARD; 3600 } 3601 3602 /** 3603 * Called when an event is being delivered to the next stage. 3604 */ 3605 protected void onDeliverToNext(QueuedInputEvent q) { 3606 if (DEBUG_INPUT_STAGES) { 3607 Log.v(TAG, "Done with " + getClass().getSimpleName() + ". " + q); 3608 } 3609 if (mNext != null) { 3610 mNext.deliver(q); 3611 } else { 3612 finishInputEvent(q); 3613 } 3614 } 3615 3616 protected boolean shouldDropInputEvent(QueuedInputEvent q) { 3617 if (mView == null || !mAdded) { 3618 Slog.w(TAG, "Dropping event due to root view being removed: " + q.mEvent); 3619 return true; 3620 } else if ((!mAttachInfo.mHasWindowFocus || mStopped) 3621 && !q.mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER)) { 3622 // This is a focus event and the window doesn't currently have input focus or 3623 // has stopped. This could be an event that came back from the previous stage 3624 // but the window has lost focus or stopped in the meantime. 3625 if (isTerminalInputEvent(q.mEvent)) { 3626 // Don't drop terminal input events, however mark them as canceled. 3627 q.mEvent.cancel(); 3628 Slog.w(TAG, "Cancelling event due to no window focus: " + q.mEvent); 3629 return false; 3630 } 3631 3632 // Drop non-terminal input events. 3633 Slog.w(TAG, "Dropping event due to no window focus: " + q.mEvent); 3634 return true; 3635 } 3636 return false; 3637 } 3638 3639 void dump(String prefix, PrintWriter writer) { 3640 if (mNext != null) { 3641 mNext.dump(prefix, writer); 3642 } 3643 } 3644 } 3645 3646 /** 3647 * Base class for implementing an input pipeline stage that supports 3648 * asynchronous and out-of-order processing of input events. 3649 * <p> 3650 * In addition to what a normal input stage can do, an asynchronous 3651 * input stage may also defer an input event that has been delivered to it 3652 * and finish or forward it later. 3653 * </p> 3654 */ 3655 abstract class AsyncInputStage extends InputStage { 3656 private final String mTraceCounter; 3657 3658 private QueuedInputEvent mQueueHead; 3659 private QueuedInputEvent mQueueTail; 3660 private int mQueueLength; 3661 3662 protected static final int DEFER = 3; 3663 3664 /** 3665 * Creates an asynchronous input stage. 3666 * @param next The next stage to which events should be forwarded. 3667 * @param traceCounter The name of a counter to record the size of 3668 * the queue of pending events. 3669 */ 3670 public AsyncInputStage(InputStage next, String traceCounter) { 3671 super(next); 3672 mTraceCounter = traceCounter; 3673 } 3674 3675 /** 3676 * Marks the event as deferred, which is to say that it will be handled 3677 * asynchronously. The caller is responsible for calling {@link #forward} 3678 * or {@link #finish} later when it is done handling the event. 3679 */ 3680 protected void defer(QueuedInputEvent q) { 3681 q.mFlags |= QueuedInputEvent.FLAG_DEFERRED; 3682 enqueue(q); 3683 } 3684 3685 @Override 3686 protected void forward(QueuedInputEvent q) { 3687 // Clear the deferred flag. 3688 q.mFlags &= ~QueuedInputEvent.FLAG_DEFERRED; 3689 3690 // Fast path if the queue is empty. 3691 QueuedInputEvent curr = mQueueHead; 3692 if (curr == null) { 3693 super.forward(q); 3694 return; 3695 } 3696 3697 // Determine whether the event must be serialized behind any others 3698 // before it can be delivered to the next stage. This is done because 3699 // deferred events might be handled out of order by the stage. 3700 final int deviceId = q.mEvent.getDeviceId(); 3701 QueuedInputEvent prev = null; 3702 boolean blocked = false; 3703 while (curr != null && curr != q) { 3704 if (!blocked && deviceId == curr.mEvent.getDeviceId()) { 3705 blocked = true; 3706 } 3707 prev = curr; 3708 curr = curr.mNext; 3709 } 3710 3711 // If the event is blocked, then leave it in the queue to be delivered later. 3712 // Note that the event might not yet be in the queue if it was not previously 3713 // deferred so we will enqueue it if needed. 3714 if (blocked) { 3715 if (curr == null) { 3716 enqueue(q); 3717 } 3718 return; 3719 } 3720 3721 // The event is not blocked. Deliver it immediately. 3722 if (curr != null) { 3723 curr = curr.mNext; 3724 dequeue(q, prev); 3725 } 3726 super.forward(q); 3727 3728 // Dequeuing this event may have unblocked successors. Deliver them. 3729 while (curr != null) { 3730 if (deviceId == curr.mEvent.getDeviceId()) { 3731 if ((curr.mFlags & QueuedInputEvent.FLAG_DEFERRED) != 0) { 3732 break; 3733 } 3734 QueuedInputEvent next = curr.mNext; 3735 dequeue(curr, prev); 3736 super.forward(curr); 3737 curr = next; 3738 } else { 3739 prev = curr; 3740 curr = curr.mNext; 3741 } 3742 } 3743 } 3744 3745 @Override 3746 protected void apply(QueuedInputEvent q, int result) { 3747 if (result == DEFER) { 3748 defer(q); 3749 } else { 3750 super.apply(q, result); 3751 } 3752 } 3753 3754 private void enqueue(QueuedInputEvent q) { 3755 if (mQueueTail == null) { 3756 mQueueHead = q; 3757 mQueueTail = q; 3758 } else { 3759 mQueueTail.mNext = q; 3760 mQueueTail = q; 3761 } 3762 3763 mQueueLength += 1; 3764 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 3765 } 3766 3767 private void dequeue(QueuedInputEvent q, QueuedInputEvent prev) { 3768 if (prev == null) { 3769 mQueueHead = q.mNext; 3770 } else { 3771 prev.mNext = q.mNext; 3772 } 3773 if (mQueueTail == q) { 3774 mQueueTail = prev; 3775 } 3776 q.mNext = null; 3777 3778 mQueueLength -= 1; 3779 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 3780 } 3781 3782 @Override 3783 void dump(String prefix, PrintWriter writer) { 3784 writer.print(prefix); 3785 writer.print(getClass().getName()); 3786 writer.print(": mQueueLength="); 3787 writer.println(mQueueLength); 3788 3789 super.dump(prefix, writer); 3790 } 3791 } 3792 3793 /** 3794 * Delivers pre-ime input events to a native activity. 3795 * Does not support pointer events. 3796 */ 3797 final class NativePreImeInputStage extends AsyncInputStage 3798 implements InputQueue.FinishedInputEventCallback { 3799 public NativePreImeInputStage(InputStage next, String traceCounter) { 3800 super(next, traceCounter); 3801 } 3802 3803 @Override 3804 protected int onProcess(QueuedInputEvent q) { 3805 if (mInputQueue != null && q.mEvent instanceof KeyEvent) { 3806 mInputQueue.sendInputEvent(q.mEvent, q, true, this); 3807 return DEFER; 3808 } 3809 return FORWARD; 3810 } 3811 3812 @Override 3813 public void onFinishedInputEvent(Object token, boolean handled) { 3814 QueuedInputEvent q = (QueuedInputEvent)token; 3815 if (handled) { 3816 finish(q, true); 3817 return; 3818 } 3819 forward(q); 3820 } 3821 } 3822 3823 /** 3824 * Delivers pre-ime input events to the view hierarchy. 3825 * Does not support pointer events. 3826 */ 3827 final class ViewPreImeInputStage extends InputStage { 3828 public ViewPreImeInputStage(InputStage next) { 3829 super(next); 3830 } 3831 3832 @Override 3833 protected int onProcess(QueuedInputEvent q) { 3834 if (q.mEvent instanceof KeyEvent) { 3835 return processKeyEvent(q); 3836 } 3837 return FORWARD; 3838 } 3839 3840 private int processKeyEvent(QueuedInputEvent q) { 3841 final KeyEvent event = (KeyEvent)q.mEvent; 3842 if (mView.dispatchKeyEventPreIme(event)) { 3843 return FINISH_HANDLED; 3844 } 3845 return FORWARD; 3846 } 3847 } 3848 3849 /** 3850 * Delivers input events to the ime. 3851 * Does not support pointer events. 3852 */ 3853 final class ImeInputStage extends AsyncInputStage 3854 implements InputMethodManager.FinishedInputEventCallback { 3855 public ImeInputStage(InputStage next, String traceCounter) { 3856 super(next, traceCounter); 3857 } 3858 3859 @Override 3860 protected int onProcess(QueuedInputEvent q) { 3861 if (mLastWasImTarget && !isInLocalFocusMode()) { 3862 InputMethodManager imm = InputMethodManager.peekInstance(); 3863 if (imm != null) { 3864 final InputEvent event = q.mEvent; 3865 if (DEBUG_IMF) Log.v(TAG, "Sending input event to IME: " + event); 3866 int result = imm.dispatchInputEvent(event, q, this, mHandler); 3867 if (result == InputMethodManager.DISPATCH_HANDLED) { 3868 return FINISH_HANDLED; 3869 } else if (result == InputMethodManager.DISPATCH_NOT_HANDLED) { 3870 // The IME could not handle it, so skip along to the next InputStage 3871 return FORWARD; 3872 } else { 3873 return DEFER; // callback will be invoked later 3874 } 3875 } 3876 } 3877 return FORWARD; 3878 } 3879 3880 @Override 3881 public void onFinishedInputEvent(Object token, boolean handled) { 3882 QueuedInputEvent q = (QueuedInputEvent)token; 3883 if (handled) { 3884 finish(q, true); 3885 return; 3886 } 3887 forward(q); 3888 } 3889 } 3890 3891 /** 3892 * Performs early processing of post-ime input events. 3893 */ 3894 final class EarlyPostImeInputStage extends InputStage { 3895 public EarlyPostImeInputStage(InputStage next) { 3896 super(next); 3897 } 3898 3899 @Override 3900 protected int onProcess(QueuedInputEvent q) { 3901 if (q.mEvent instanceof KeyEvent) { 3902 return processKeyEvent(q); 3903 } else { 3904 final int source = q.mEvent.getSource(); 3905 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 3906 return processPointerEvent(q); 3907 } 3908 } 3909 return FORWARD; 3910 } 3911 3912 private int processKeyEvent(QueuedInputEvent q) { 3913 final KeyEvent event = (KeyEvent)q.mEvent; 3914 3915 // If the key's purpose is to exit touch mode then we consume it 3916 // and consider it handled. 3917 if (checkForLeavingTouchModeAndConsume(event)) { 3918 return FINISH_HANDLED; 3919 } 3920 3921 // Make sure the fallback event policy sees all keys that will be 3922 // delivered to the view hierarchy. 3923 mFallbackEventHandler.preDispatchKeyEvent(event); 3924 return FORWARD; 3925 } 3926 3927 private int processPointerEvent(QueuedInputEvent q) { 3928 final MotionEvent event = (MotionEvent)q.mEvent; 3929 3930 // Translate the pointer event for compatibility, if needed. 3931 if (mTranslator != null) { 3932 mTranslator.translateEventInScreenToAppWindow(event); 3933 } 3934 3935 // Enter touch mode on down or scroll. 3936 final int action = event.getAction(); 3937 if (action == MotionEvent.ACTION_DOWN || action == MotionEvent.ACTION_SCROLL) { 3938 ensureTouchMode(true); 3939 } 3940 3941 // Offset the scroll position. 3942 if (mCurScrollY != 0) { 3943 event.offsetLocation(0, mCurScrollY); 3944 } 3945 3946 // Remember the touch position for possible drag-initiation. 3947 if (event.isTouchEvent()) { 3948 mLastTouchPoint.x = event.getRawX(); 3949 mLastTouchPoint.y = event.getRawY(); 3950 } 3951 return FORWARD; 3952 } 3953 } 3954 3955 /** 3956 * Delivers post-ime input events to a native activity. 3957 */ 3958 final class NativePostImeInputStage extends AsyncInputStage 3959 implements InputQueue.FinishedInputEventCallback { 3960 public NativePostImeInputStage(InputStage next, String traceCounter) { 3961 super(next, traceCounter); 3962 } 3963 3964 @Override 3965 protected int onProcess(QueuedInputEvent q) { 3966 if (mInputQueue != null) { 3967 mInputQueue.sendInputEvent(q.mEvent, q, false, this); 3968 return DEFER; 3969 } 3970 return FORWARD; 3971 } 3972 3973 @Override 3974 public void onFinishedInputEvent(Object token, boolean handled) { 3975 QueuedInputEvent q = (QueuedInputEvent)token; 3976 if (handled) { 3977 finish(q, true); 3978 return; 3979 } 3980 forward(q); 3981 } 3982 } 3983 3984 /** 3985 * Delivers post-ime input events to the view hierarchy. 3986 */ 3987 final class ViewPostImeInputStage extends InputStage { 3988 public ViewPostImeInputStage(InputStage next) { 3989 super(next); 3990 } 3991 3992 @Override 3993 protected int onProcess(QueuedInputEvent q) { 3994 if (q.mEvent instanceof KeyEvent) { 3995 return processKeyEvent(q); 3996 } else { 3997 // If delivering a new non-key event, make sure the window is 3998 // now allowed to start updating. 3999 handleDispatchDoneAnimating(); 4000 final int source = q.mEvent.getSource(); 4001 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 4002 return processPointerEvent(q); 4003 } else if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 4004 return processTrackballEvent(q); 4005 } else { 4006 return processGenericMotionEvent(q); 4007 } 4008 } 4009 } 4010 4011 @Override 4012 protected void onDeliverToNext(QueuedInputEvent q) { 4013 if (mUnbufferedInputDispatch 4014 && q.mEvent instanceof MotionEvent 4015 && ((MotionEvent)q.mEvent).isTouchEvent() 4016 && isTerminalInputEvent(q.mEvent)) { 4017 mUnbufferedInputDispatch = false; 4018 scheduleConsumeBatchedInput(); 4019 } 4020 super.onDeliverToNext(q); 4021 } 4022 4023 private int processKeyEvent(QueuedInputEvent q) { 4024 final KeyEvent event = (KeyEvent)q.mEvent; 4025 4026 if (event.getAction() != KeyEvent.ACTION_UP) { 4027 // If delivering a new key event, make sure the window is 4028 // now allowed to start updating. 4029 handleDispatchDoneAnimating(); 4030 } 4031 4032 // Deliver the key to the view hierarchy. 4033 if (mView.dispatchKeyEvent(event)) { 4034 return FINISH_HANDLED; 4035 } 4036 4037 if (shouldDropInputEvent(q)) { 4038 return FINISH_NOT_HANDLED; 4039 } 4040 4041 // If the Control modifier is held, try to interpret the key as a shortcut. 4042 if (event.getAction() == KeyEvent.ACTION_DOWN 4043 && event.isCtrlPressed() 4044 && event.getRepeatCount() == 0 4045 && !KeyEvent.isModifierKey(event.getKeyCode())) { 4046 if (mView.dispatchKeyShortcutEvent(event)) { 4047 return FINISH_HANDLED; 4048 } 4049 if (shouldDropInputEvent(q)) { 4050 return FINISH_NOT_HANDLED; 4051 } 4052 } 4053 4054 // Apply the fallback event policy. 4055 if (mFallbackEventHandler.dispatchKeyEvent(event)) { 4056 return FINISH_HANDLED; 4057 } 4058 if (shouldDropInputEvent(q)) { 4059 return FINISH_NOT_HANDLED; 4060 } 4061 4062 // Handle automatic focus changes. 4063 if (event.getAction() == KeyEvent.ACTION_DOWN) { 4064 int direction = 0; 4065 switch (event.getKeyCode()) { 4066 case KeyEvent.KEYCODE_DPAD_LEFT: 4067 if (event.hasNoModifiers()) { 4068 direction = View.FOCUS_LEFT; 4069 } 4070 break; 4071 case KeyEvent.KEYCODE_DPAD_RIGHT: 4072 if (event.hasNoModifiers()) { 4073 direction = View.FOCUS_RIGHT; 4074 } 4075 break; 4076 case KeyEvent.KEYCODE_DPAD_UP: 4077 if (event.hasNoModifiers()) { 4078 direction = View.FOCUS_UP; 4079 } 4080 break; 4081 case KeyEvent.KEYCODE_DPAD_DOWN: 4082 if (event.hasNoModifiers()) { 4083 direction = View.FOCUS_DOWN; 4084 } 4085 break; 4086 case KeyEvent.KEYCODE_TAB: 4087 if (event.hasNoModifiers()) { 4088 direction = View.FOCUS_FORWARD; 4089 } else if (event.hasModifiers(KeyEvent.META_SHIFT_ON)) { 4090 direction = View.FOCUS_BACKWARD; 4091 } 4092 break; 4093 } 4094 if (direction != 0) { 4095 View focused = mView.findFocus(); 4096 if (focused != null) { 4097 View v = focused.focusSearch(direction); 4098 if (v != null && v != focused) { 4099 // do the math the get the interesting rect 4100 // of previous focused into the coord system of 4101 // newly focused view 4102 focused.getFocusedRect(mTempRect); 4103 if (mView instanceof ViewGroup) { 4104 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 4105 focused, mTempRect); 4106 ((ViewGroup) mView).offsetRectIntoDescendantCoords( 4107 v, mTempRect); 4108 } 4109 if (v.requestFocus(direction, mTempRect)) { 4110 playSoundEffect(SoundEffectConstants 4111 .getContantForFocusDirection(direction)); 4112 return FINISH_HANDLED; 4113 } 4114 } 4115 4116 // Give the focused view a last chance to handle the dpad key. 4117 if (mView.dispatchUnhandledMove(focused, direction)) { 4118 return FINISH_HANDLED; 4119 } 4120 } else { 4121 // find the best view to give focus to in this non-touch-mode with no-focus 4122 View v = focusSearch(null, direction); 4123 if (v != null && v.requestFocus(direction)) { 4124 return FINISH_HANDLED; 4125 } 4126 } 4127 } 4128 } 4129 return FORWARD; 4130 } 4131 4132 private int processPointerEvent(QueuedInputEvent q) { 4133 final MotionEvent event = (MotionEvent)q.mEvent; 4134 4135 mAttachInfo.mUnbufferedDispatchRequested = false; 4136 boolean handled = mView.dispatchPointerEvent(event); 4137 if (mAttachInfo.mUnbufferedDispatchRequested && !mUnbufferedInputDispatch) { 4138 mUnbufferedInputDispatch = true; 4139 if (mConsumeBatchedInputScheduled) { 4140 scheduleConsumeBatchedInputImmediately(); 4141 } 4142 } 4143 return handled ? FINISH_HANDLED : FORWARD; 4144 } 4145 4146 private int processTrackballEvent(QueuedInputEvent q) { 4147 final MotionEvent event = (MotionEvent)q.mEvent; 4148 4149 if (mView.dispatchTrackballEvent(event)) { 4150 return FINISH_HANDLED; 4151 } 4152 return FORWARD; 4153 } 4154 4155 private int processGenericMotionEvent(QueuedInputEvent q) { 4156 final MotionEvent event = (MotionEvent)q.mEvent; 4157 4158 // Deliver the event to the view. 4159 if (mView.dispatchGenericMotionEvent(event)) { 4160 return FINISH_HANDLED; 4161 } 4162 return FORWARD; 4163 } 4164 } 4165 4166 /** 4167 * Performs synthesis of new input events from unhandled input events. 4168 */ 4169 final class SyntheticInputStage extends InputStage { 4170 private final SyntheticTrackballHandler mTrackball = new SyntheticTrackballHandler(); 4171 private final SyntheticJoystickHandler mJoystick = new SyntheticJoystickHandler(); 4172 private final SyntheticTouchNavigationHandler mTouchNavigation = 4173 new SyntheticTouchNavigationHandler(); 4174 private final SyntheticKeyboardHandler mKeyboard = new SyntheticKeyboardHandler(); 4175 4176 public SyntheticInputStage() { 4177 super(null); 4178 } 4179 4180 @Override 4181 protected int onProcess(QueuedInputEvent q) { 4182 q.mFlags |= QueuedInputEvent.FLAG_RESYNTHESIZED; 4183 if (q.mEvent instanceof MotionEvent) { 4184 final MotionEvent event = (MotionEvent)q.mEvent; 4185 final int source = event.getSource(); 4186 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 4187 mTrackball.process(event); 4188 return FINISH_HANDLED; 4189 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 4190 mJoystick.process(event); 4191 return FINISH_HANDLED; 4192 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 4193 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 4194 mTouchNavigation.process(event); 4195 return FINISH_HANDLED; 4196 } 4197 } else if ((q.mFlags & QueuedInputEvent.FLAG_UNHANDLED) != 0) { 4198 mKeyboard.process((KeyEvent)q.mEvent); 4199 return FINISH_HANDLED; 4200 } 4201 4202 return FORWARD; 4203 } 4204 4205 @Override 4206 protected void onDeliverToNext(QueuedInputEvent q) { 4207 if ((q.mFlags & QueuedInputEvent.FLAG_RESYNTHESIZED) == 0) { 4208 // Cancel related synthetic events if any prior stage has handled the event. 4209 if (q.mEvent instanceof MotionEvent) { 4210 final MotionEvent event = (MotionEvent)q.mEvent; 4211 final int source = event.getSource(); 4212 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 4213 mTrackball.cancel(event); 4214 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 4215 mJoystick.cancel(event); 4216 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 4217 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 4218 mTouchNavigation.cancel(event); 4219 } 4220 } 4221 } 4222 super.onDeliverToNext(q); 4223 } 4224 } 4225 4226 /** 4227 * Creates dpad events from unhandled trackball movements. 4228 */ 4229 final class SyntheticTrackballHandler { 4230 private final TrackballAxis mX = new TrackballAxis(); 4231 private final TrackballAxis mY = new TrackballAxis(); 4232 private long mLastTime; 4233 4234 public void process(MotionEvent event) { 4235 // Translate the trackball event into DPAD keys and try to deliver those. 4236 long curTime = SystemClock.uptimeMillis(); 4237 if ((mLastTime + MAX_TRACKBALL_DELAY) < curTime) { 4238 // It has been too long since the last movement, 4239 // so restart at the beginning. 4240 mX.reset(0); 4241 mY.reset(0); 4242 mLastTime = curTime; 4243 } 4244 4245 final int action = event.getAction(); 4246 final int metaState = event.getMetaState(); 4247 switch (action) { 4248 case MotionEvent.ACTION_DOWN: 4249 mX.reset(2); 4250 mY.reset(2); 4251 enqueueInputEvent(new KeyEvent(curTime, curTime, 4252 KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 4253 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4254 InputDevice.SOURCE_KEYBOARD)); 4255 break; 4256 case MotionEvent.ACTION_UP: 4257 mX.reset(2); 4258 mY.reset(2); 4259 enqueueInputEvent(new KeyEvent(curTime, curTime, 4260 KeyEvent.ACTION_UP, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 4261 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4262 InputDevice.SOURCE_KEYBOARD)); 4263 break; 4264 } 4265 4266 if (DEBUG_TRACKBALL) Log.v(TAG, "TB X=" + mX.position + " step=" 4267 + mX.step + " dir=" + mX.dir + " acc=" + mX.acceleration 4268 + " move=" + event.getX() 4269 + " / Y=" + mY.position + " step=" 4270 + mY.step + " dir=" + mY.dir + " acc=" + mY.acceleration 4271 + " move=" + event.getY()); 4272 final float xOff = mX.collect(event.getX(), event.getEventTime(), "X"); 4273 final float yOff = mY.collect(event.getY(), event.getEventTime(), "Y"); 4274 4275 // Generate DPAD events based on the trackball movement. 4276 // We pick the axis that has moved the most as the direction of 4277 // the DPAD. When we generate DPAD events for one axis, then the 4278 // other axis is reset -- we don't want to perform DPAD jumps due 4279 // to slight movements in the trackball when making major movements 4280 // along the other axis. 4281 int keycode = 0; 4282 int movement = 0; 4283 float accel = 1; 4284 if (xOff > yOff) { 4285 movement = mX.generate(); 4286 if (movement != 0) { 4287 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_RIGHT 4288 : KeyEvent.KEYCODE_DPAD_LEFT; 4289 accel = mX.acceleration; 4290 mY.reset(2); 4291 } 4292 } else if (yOff > 0) { 4293 movement = mY.generate(); 4294 if (movement != 0) { 4295 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_DOWN 4296 : KeyEvent.KEYCODE_DPAD_UP; 4297 accel = mY.acceleration; 4298 mX.reset(2); 4299 } 4300 } 4301 4302 if (keycode != 0) { 4303 if (movement < 0) movement = -movement; 4304 int accelMovement = (int)(movement * accel); 4305 if (DEBUG_TRACKBALL) Log.v(TAG, "Move: movement=" + movement 4306 + " accelMovement=" + accelMovement 4307 + " accel=" + accel); 4308 if (accelMovement > movement) { 4309 if (DEBUG_TRACKBALL) Log.v(TAG, "Delivering fake DPAD: " 4310 + keycode); 4311 movement--; 4312 int repeatCount = accelMovement - movement; 4313 enqueueInputEvent(new KeyEvent(curTime, curTime, 4314 KeyEvent.ACTION_MULTIPLE, keycode, repeatCount, metaState, 4315 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4316 InputDevice.SOURCE_KEYBOARD)); 4317 } 4318 while (movement > 0) { 4319 if (DEBUG_TRACKBALL) Log.v(TAG, "Delivering fake DPAD: " 4320 + keycode); 4321 movement--; 4322 curTime = SystemClock.uptimeMillis(); 4323 enqueueInputEvent(new KeyEvent(curTime, curTime, 4324 KeyEvent.ACTION_DOWN, keycode, 0, metaState, 4325 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4326 InputDevice.SOURCE_KEYBOARD)); 4327 enqueueInputEvent(new KeyEvent(curTime, curTime, 4328 KeyEvent.ACTION_UP, keycode, 0, metaState, 4329 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4330 InputDevice.SOURCE_KEYBOARD)); 4331 } 4332 mLastTime = curTime; 4333 } 4334 } 4335 4336 public void cancel(MotionEvent event) { 4337 mLastTime = Integer.MIN_VALUE; 4338 4339 // If we reach this, we consumed a trackball event. 4340 // Because we will not translate the trackball event into a key event, 4341 // touch mode will not exit, so we exit touch mode here. 4342 if (mView != null && mAdded) { 4343 ensureTouchMode(false); 4344 } 4345 } 4346 } 4347 4348 /** 4349 * Maintains state information for a single trackball axis, generating 4350 * discrete (DPAD) movements based on raw trackball motion. 4351 */ 4352 static final class TrackballAxis { 4353 /** 4354 * The maximum amount of acceleration we will apply. 4355 */ 4356 static final float MAX_ACCELERATION = 20; 4357 4358 /** 4359 * The maximum amount of time (in milliseconds) between events in order 4360 * for us to consider the user to be doing fast trackball movements, 4361 * and thus apply an acceleration. 4362 */ 4363 static final long FAST_MOVE_TIME = 150; 4364 4365 /** 4366 * Scaling factor to the time (in milliseconds) between events to how 4367 * much to multiple/divide the current acceleration. When movement 4368 * is < FAST_MOVE_TIME this multiplies the acceleration; when > 4369 * FAST_MOVE_TIME it divides it. 4370 */ 4371 static final float ACCEL_MOVE_SCALING_FACTOR = (1.0f/40); 4372 4373 static final float FIRST_MOVEMENT_THRESHOLD = 0.5f; 4374 static final float SECOND_CUMULATIVE_MOVEMENT_THRESHOLD = 2.0f; 4375 static final float SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD = 1.0f; 4376 4377 float position; 4378 float acceleration = 1; 4379 long lastMoveTime = 0; 4380 int step; 4381 int dir; 4382 int nonAccelMovement; 4383 4384 void reset(int _step) { 4385 position = 0; 4386 acceleration = 1; 4387 lastMoveTime = 0; 4388 step = _step; 4389 dir = 0; 4390 } 4391 4392 /** 4393 * Add trackball movement into the state. If the direction of movement 4394 * has been reversed, the state is reset before adding the 4395 * movement (so that you don't have to compensate for any previously 4396 * collected movement before see the result of the movement in the 4397 * new direction). 4398 * 4399 * @return Returns the absolute value of the amount of movement 4400 * collected so far. 4401 */ 4402 float collect(float off, long time, String axis) { 4403 long normTime; 4404 if (off > 0) { 4405 normTime = (long)(off * FAST_MOVE_TIME); 4406 if (dir < 0) { 4407 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to positive!"); 4408 position = 0; 4409 step = 0; 4410 acceleration = 1; 4411 lastMoveTime = 0; 4412 } 4413 dir = 1; 4414 } else if (off < 0) { 4415 normTime = (long)((-off) * FAST_MOVE_TIME); 4416 if (dir > 0) { 4417 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to negative!"); 4418 position = 0; 4419 step = 0; 4420 acceleration = 1; 4421 lastMoveTime = 0; 4422 } 4423 dir = -1; 4424 } else { 4425 normTime = 0; 4426 } 4427 4428 // The number of milliseconds between each movement that is 4429 // considered "normal" and will not result in any acceleration 4430 // or deceleration, scaled by the offset we have here. 4431 if (normTime > 0) { 4432 long delta = time - lastMoveTime; 4433 lastMoveTime = time; 4434 float acc = acceleration; 4435 if (delta < normTime) { 4436 // The user is scrolling rapidly, so increase acceleration. 4437 float scale = (normTime-delta) * ACCEL_MOVE_SCALING_FACTOR; 4438 if (scale > 1) acc *= scale; 4439 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " accelerate: off=" 4440 + off + " normTime=" + normTime + " delta=" + delta 4441 + " scale=" + scale + " acc=" + acc); 4442 acceleration = acc < MAX_ACCELERATION ? acc : MAX_ACCELERATION; 4443 } else { 4444 // The user is scrolling slowly, so decrease acceleration. 4445 float scale = (delta-normTime) * ACCEL_MOVE_SCALING_FACTOR; 4446 if (scale > 1) acc /= scale; 4447 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " deccelerate: off=" 4448 + off + " normTime=" + normTime + " delta=" + delta 4449 + " scale=" + scale + " acc=" + acc); 4450 acceleration = acc > 1 ? acc : 1; 4451 } 4452 } 4453 position += off; 4454 return Math.abs(position); 4455 } 4456 4457 /** 4458 * Generate the number of discrete movement events appropriate for 4459 * the currently collected trackball movement. 4460 * 4461 * @return Returns the number of discrete movements, either positive 4462 * or negative, or 0 if there is not enough trackball movement yet 4463 * for a discrete movement. 4464 */ 4465 int generate() { 4466 int movement = 0; 4467 nonAccelMovement = 0; 4468 do { 4469 final int dir = position >= 0 ? 1 : -1; 4470 switch (step) { 4471 // If we are going to execute the first step, then we want 4472 // to do this as soon as possible instead of waiting for 4473 // a full movement, in order to make things look responsive. 4474 case 0: 4475 if (Math.abs(position) < FIRST_MOVEMENT_THRESHOLD) { 4476 return movement; 4477 } 4478 movement += dir; 4479 nonAccelMovement += dir; 4480 step = 1; 4481 break; 4482 // If we have generated the first movement, then we need 4483 // to wait for the second complete trackball motion before 4484 // generating the second discrete movement. 4485 case 1: 4486 if (Math.abs(position) < SECOND_CUMULATIVE_MOVEMENT_THRESHOLD) { 4487 return movement; 4488 } 4489 movement += dir; 4490 nonAccelMovement += dir; 4491 position -= SECOND_CUMULATIVE_MOVEMENT_THRESHOLD * dir; 4492 step = 2; 4493 break; 4494 // After the first two, we generate discrete movements 4495 // consistently with the trackball, applying an acceleration 4496 // if the trackball is moving quickly. This is a simple 4497 // acceleration on top of what we already compute based 4498 // on how quickly the wheel is being turned, to apply 4499 // a longer increasing acceleration to continuous movement 4500 // in one direction. 4501 default: 4502 if (Math.abs(position) < SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD) { 4503 return movement; 4504 } 4505 movement += dir; 4506 position -= dir * SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD; 4507 float acc = acceleration; 4508 acc *= 1.1f; 4509 acceleration = acc < MAX_ACCELERATION ? acc : acceleration; 4510 break; 4511 } 4512 } while (true); 4513 } 4514 } 4515 4516 /** 4517 * Creates dpad events from unhandled joystick movements. 4518 */ 4519 final class SyntheticJoystickHandler extends Handler { 4520 private final static String TAG = "SyntheticJoystickHandler"; 4521 private final static int MSG_ENQUEUE_X_AXIS_KEY_REPEAT = 1; 4522 private final static int MSG_ENQUEUE_Y_AXIS_KEY_REPEAT = 2; 4523 4524 private int mLastXDirection; 4525 private int mLastYDirection; 4526 private int mLastXKeyCode; 4527 private int mLastYKeyCode; 4528 4529 public SyntheticJoystickHandler() { 4530 super(true); 4531 } 4532 4533 @Override 4534 public void handleMessage(Message msg) { 4535 switch (msg.what) { 4536 case MSG_ENQUEUE_X_AXIS_KEY_REPEAT: 4537 case MSG_ENQUEUE_Y_AXIS_KEY_REPEAT: { 4538 KeyEvent oldEvent = (KeyEvent)msg.obj; 4539 KeyEvent e = KeyEvent.changeTimeRepeat(oldEvent, 4540 SystemClock.uptimeMillis(), 4541 oldEvent.getRepeatCount() + 1); 4542 if (mAttachInfo.mHasWindowFocus) { 4543 enqueueInputEvent(e); 4544 Message m = obtainMessage(msg.what, e); 4545 m.setAsynchronous(true); 4546 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatDelay()); 4547 } 4548 } break; 4549 } 4550 } 4551 4552 public void process(MotionEvent event) { 4553 switch(event.getActionMasked()) { 4554 case MotionEvent.ACTION_CANCEL: 4555 cancel(event); 4556 break; 4557 case MotionEvent.ACTION_MOVE: 4558 update(event, true); 4559 break; 4560 default: 4561 Log.w(TAG, "Unexpected action: " + event.getActionMasked()); 4562 } 4563 } 4564 4565 private void cancel(MotionEvent event) { 4566 removeMessages(MSG_ENQUEUE_X_AXIS_KEY_REPEAT); 4567 removeMessages(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT); 4568 update(event, false); 4569 } 4570 4571 private void update(MotionEvent event, boolean synthesizeNewKeys) { 4572 final long time = event.getEventTime(); 4573 final int metaState = event.getMetaState(); 4574 final int deviceId = event.getDeviceId(); 4575 final int source = event.getSource(); 4576 4577 int xDirection = joystickAxisValueToDirection( 4578 event.getAxisValue(MotionEvent.AXIS_HAT_X)); 4579 if (xDirection == 0) { 4580 xDirection = joystickAxisValueToDirection(event.getX()); 4581 } 4582 4583 int yDirection = joystickAxisValueToDirection( 4584 event.getAxisValue(MotionEvent.AXIS_HAT_Y)); 4585 if (yDirection == 0) { 4586 yDirection = joystickAxisValueToDirection(event.getY()); 4587 } 4588 4589 if (xDirection != mLastXDirection) { 4590 if (mLastXKeyCode != 0) { 4591 removeMessages(MSG_ENQUEUE_X_AXIS_KEY_REPEAT); 4592 enqueueInputEvent(new KeyEvent(time, time, 4593 KeyEvent.ACTION_UP, mLastXKeyCode, 0, metaState, 4594 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4595 mLastXKeyCode = 0; 4596 } 4597 4598 mLastXDirection = xDirection; 4599 4600 if (xDirection != 0 && synthesizeNewKeys) { 4601 mLastXKeyCode = xDirection > 0 4602 ? KeyEvent.KEYCODE_DPAD_RIGHT : KeyEvent.KEYCODE_DPAD_LEFT; 4603 final KeyEvent e = new KeyEvent(time, time, 4604 KeyEvent.ACTION_DOWN, mLastXKeyCode, 0, metaState, 4605 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4606 enqueueInputEvent(e); 4607 Message m = obtainMessage(MSG_ENQUEUE_X_AXIS_KEY_REPEAT, e); 4608 m.setAsynchronous(true); 4609 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4610 } 4611 } 4612 4613 if (yDirection != mLastYDirection) { 4614 if (mLastYKeyCode != 0) { 4615 removeMessages(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT); 4616 enqueueInputEvent(new KeyEvent(time, time, 4617 KeyEvent.ACTION_UP, mLastYKeyCode, 0, metaState, 4618 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4619 mLastYKeyCode = 0; 4620 } 4621 4622 mLastYDirection = yDirection; 4623 4624 if (yDirection != 0 && synthesizeNewKeys) { 4625 mLastYKeyCode = yDirection > 0 4626 ? KeyEvent.KEYCODE_DPAD_DOWN : KeyEvent.KEYCODE_DPAD_UP; 4627 final KeyEvent e = new KeyEvent(time, time, 4628 KeyEvent.ACTION_DOWN, mLastYKeyCode, 0, metaState, 4629 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4630 enqueueInputEvent(e); 4631 Message m = obtainMessage(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT, e); 4632 m.setAsynchronous(true); 4633 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4634 } 4635 } 4636 } 4637 4638 private int joystickAxisValueToDirection(float value) { 4639 if (value >= 0.5f) { 4640 return 1; 4641 } else if (value <= -0.5f) { 4642 return -1; 4643 } else { 4644 return 0; 4645 } 4646 } 4647 } 4648 4649 /** 4650 * Creates dpad events from unhandled touch navigation movements. 4651 */ 4652 final class SyntheticTouchNavigationHandler extends Handler { 4653 private static final String LOCAL_TAG = "SyntheticTouchNavigationHandler"; 4654 private static final boolean LOCAL_DEBUG = false; 4655 4656 // Assumed nominal width and height in millimeters of a touch navigation pad, 4657 // if no resolution information is available from the input system. 4658 private static final float DEFAULT_WIDTH_MILLIMETERS = 48; 4659 private static final float DEFAULT_HEIGHT_MILLIMETERS = 48; 4660 4661 /* TODO: These constants should eventually be moved to ViewConfiguration. */ 4662 4663 // The nominal distance traveled to move by one unit. 4664 private static final int TICK_DISTANCE_MILLIMETERS = 12; 4665 4666 // Minimum and maximum fling velocity in ticks per second. 4667 // The minimum velocity should be set such that we perform enough ticks per 4668 // second that the fling appears to be fluid. For example, if we set the minimum 4669 // to 2 ticks per second, then there may be up to half a second delay between the next 4670 // to last and last ticks which is noticeably discrete and jerky. This value should 4671 // probably not be set to anything less than about 4. 4672 // If fling accuracy is a problem then consider tuning the tick distance instead. 4673 private static final float MIN_FLING_VELOCITY_TICKS_PER_SECOND = 6f; 4674 private static final float MAX_FLING_VELOCITY_TICKS_PER_SECOND = 20f; 4675 4676 // Fling velocity decay factor applied after each new key is emitted. 4677 // This parameter controls the deceleration and overall duration of the fling. 4678 // The fling stops automatically when its velocity drops below the minimum 4679 // fling velocity defined above. 4680 private static final float FLING_TICK_DECAY = 0.8f; 4681 4682 /* The input device that we are tracking. */ 4683 4684 private int mCurrentDeviceId = -1; 4685 private int mCurrentSource; 4686 private boolean mCurrentDeviceSupported; 4687 4688 /* Configuration for the current input device. */ 4689 4690 // The scaled tick distance. A movement of this amount should generally translate 4691 // into a single dpad event in a given direction. 4692 private float mConfigTickDistance; 4693 4694 // The minimum and maximum scaled fling velocity. 4695 private float mConfigMinFlingVelocity; 4696 private float mConfigMaxFlingVelocity; 4697 4698 /* Tracking state. */ 4699 4700 // The velocity tracker for detecting flings. 4701 private VelocityTracker mVelocityTracker; 4702 4703 // The active pointer id, or -1 if none. 4704 private int mActivePointerId = -1; 4705 4706 // Location where tracking started. 4707 private float mStartX; 4708 private float mStartY; 4709 4710 // Most recently observed position. 4711 private float mLastX; 4712 private float mLastY; 4713 4714 // Accumulated movement delta since the last direction key was sent. 4715 private float mAccumulatedX; 4716 private float mAccumulatedY; 4717 4718 // Set to true if any movement was delivered to the app. 4719 // Implies that tap slop was exceeded. 4720 private boolean mConsumedMovement; 4721 4722 // The most recently sent key down event. 4723 // The keycode remains set until the direction changes or a fling ends 4724 // so that repeated key events may be generated as required. 4725 private long mPendingKeyDownTime; 4726 private int mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 4727 private int mPendingKeyRepeatCount; 4728 private int mPendingKeyMetaState; 4729 4730 // The current fling velocity while a fling is in progress. 4731 private boolean mFlinging; 4732 private float mFlingVelocity; 4733 4734 public SyntheticTouchNavigationHandler() { 4735 super(true); 4736 } 4737 4738 public void process(MotionEvent event) { 4739 // Update the current device information. 4740 final long time = event.getEventTime(); 4741 final int deviceId = event.getDeviceId(); 4742 final int source = event.getSource(); 4743 if (mCurrentDeviceId != deviceId || mCurrentSource != source) { 4744 finishKeys(time); 4745 finishTracking(time); 4746 mCurrentDeviceId = deviceId; 4747 mCurrentSource = source; 4748 mCurrentDeviceSupported = false; 4749 InputDevice device = event.getDevice(); 4750 if (device != null) { 4751 // In order to support an input device, we must know certain 4752 // characteristics about it, such as its size and resolution. 4753 InputDevice.MotionRange xRange = device.getMotionRange(MotionEvent.AXIS_X); 4754 InputDevice.MotionRange yRange = device.getMotionRange(MotionEvent.AXIS_Y); 4755 if (xRange != null && yRange != null) { 4756 mCurrentDeviceSupported = true; 4757 4758 // Infer the resolution if it not actually known. 4759 float xRes = xRange.getResolution(); 4760 if (xRes <= 0) { 4761 xRes = xRange.getRange() / DEFAULT_WIDTH_MILLIMETERS; 4762 } 4763 float yRes = yRange.getResolution(); 4764 if (yRes <= 0) { 4765 yRes = yRange.getRange() / DEFAULT_HEIGHT_MILLIMETERS; 4766 } 4767 float nominalRes = (xRes + yRes) * 0.5f; 4768 4769 // Precompute all of the configuration thresholds we will need. 4770 mConfigTickDistance = TICK_DISTANCE_MILLIMETERS * nominalRes; 4771 mConfigMinFlingVelocity = 4772 MIN_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 4773 mConfigMaxFlingVelocity = 4774 MAX_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 4775 4776 if (LOCAL_DEBUG) { 4777 Log.d(LOCAL_TAG, "Configured device " + mCurrentDeviceId 4778 + " (" + Integer.toHexString(mCurrentSource) + "): " 4779 + ", mConfigTickDistance=" + mConfigTickDistance 4780 + ", mConfigMinFlingVelocity=" + mConfigMinFlingVelocity 4781 + ", mConfigMaxFlingVelocity=" + mConfigMaxFlingVelocity); 4782 } 4783 } 4784 } 4785 } 4786 if (!mCurrentDeviceSupported) { 4787 return; 4788 } 4789 4790 // Handle the event. 4791 final int action = event.getActionMasked(); 4792 switch (action) { 4793 case MotionEvent.ACTION_DOWN: { 4794 boolean caughtFling = mFlinging; 4795 finishKeys(time); 4796 finishTracking(time); 4797 mActivePointerId = event.getPointerId(0); 4798 mVelocityTracker = VelocityTracker.obtain(); 4799 mVelocityTracker.addMovement(event); 4800 mStartX = event.getX(); 4801 mStartY = event.getY(); 4802 mLastX = mStartX; 4803 mLastY = mStartY; 4804 mAccumulatedX = 0; 4805 mAccumulatedY = 0; 4806 4807 // If we caught a fling, then pretend that the tap slop has already 4808 // been exceeded to suppress taps whose only purpose is to stop the fling. 4809 mConsumedMovement = caughtFling; 4810 break; 4811 } 4812 4813 case MotionEvent.ACTION_MOVE: 4814 case MotionEvent.ACTION_UP: { 4815 if (mActivePointerId < 0) { 4816 break; 4817 } 4818 final int index = event.findPointerIndex(mActivePointerId); 4819 if (index < 0) { 4820 finishKeys(time); 4821 finishTracking(time); 4822 break; 4823 } 4824 4825 mVelocityTracker.addMovement(event); 4826 final float x = event.getX(index); 4827 final float y = event.getY(index); 4828 mAccumulatedX += x - mLastX; 4829 mAccumulatedY += y - mLastY; 4830 mLastX = x; 4831 mLastY = y; 4832 4833 // Consume any accumulated movement so far. 4834 final int metaState = event.getMetaState(); 4835 consumeAccumulatedMovement(time, metaState); 4836 4837 // Detect taps and flings. 4838 if (action == MotionEvent.ACTION_UP) { 4839 if (mConsumedMovement && mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 4840 // It might be a fling. 4841 mVelocityTracker.computeCurrentVelocity(1000, mConfigMaxFlingVelocity); 4842 final float vx = mVelocityTracker.getXVelocity(mActivePointerId); 4843 final float vy = mVelocityTracker.getYVelocity(mActivePointerId); 4844 if (!startFling(time, vx, vy)) { 4845 finishKeys(time); 4846 } 4847 } 4848 finishTracking(time); 4849 } 4850 break; 4851 } 4852 4853 case MotionEvent.ACTION_CANCEL: { 4854 finishKeys(time); 4855 finishTracking(time); 4856 break; 4857 } 4858 } 4859 } 4860 4861 public void cancel(MotionEvent event) { 4862 if (mCurrentDeviceId == event.getDeviceId() 4863 && mCurrentSource == event.getSource()) { 4864 final long time = event.getEventTime(); 4865 finishKeys(time); 4866 finishTracking(time); 4867 } 4868 } 4869 4870 private void finishKeys(long time) { 4871 cancelFling(); 4872 sendKeyUp(time); 4873 } 4874 4875 private void finishTracking(long time) { 4876 if (mActivePointerId >= 0) { 4877 mActivePointerId = -1; 4878 mVelocityTracker.recycle(); 4879 mVelocityTracker = null; 4880 } 4881 } 4882 4883 private void consumeAccumulatedMovement(long time, int metaState) { 4884 final float absX = Math.abs(mAccumulatedX); 4885 final float absY = Math.abs(mAccumulatedY); 4886 if (absX >= absY) { 4887 if (absX >= mConfigTickDistance) { 4888 mAccumulatedX = consumeAccumulatedMovement(time, metaState, mAccumulatedX, 4889 KeyEvent.KEYCODE_DPAD_LEFT, KeyEvent.KEYCODE_DPAD_RIGHT); 4890 mAccumulatedY = 0; 4891 mConsumedMovement = true; 4892 } 4893 } else { 4894 if (absY >= mConfigTickDistance) { 4895 mAccumulatedY = consumeAccumulatedMovement(time, metaState, mAccumulatedY, 4896 KeyEvent.KEYCODE_DPAD_UP, KeyEvent.KEYCODE_DPAD_DOWN); 4897 mAccumulatedX = 0; 4898 mConsumedMovement = true; 4899 } 4900 } 4901 } 4902 4903 private float consumeAccumulatedMovement(long time, int metaState, 4904 float accumulator, int negativeKeyCode, int positiveKeyCode) { 4905 while (accumulator <= -mConfigTickDistance) { 4906 sendKeyDownOrRepeat(time, negativeKeyCode, metaState); 4907 accumulator += mConfigTickDistance; 4908 } 4909 while (accumulator >= mConfigTickDistance) { 4910 sendKeyDownOrRepeat(time, positiveKeyCode, metaState); 4911 accumulator -= mConfigTickDistance; 4912 } 4913 return accumulator; 4914 } 4915 4916 private void sendKeyDownOrRepeat(long time, int keyCode, int metaState) { 4917 if (mPendingKeyCode != keyCode) { 4918 sendKeyUp(time); 4919 mPendingKeyDownTime = time; 4920 mPendingKeyCode = keyCode; 4921 mPendingKeyRepeatCount = 0; 4922 } else { 4923 mPendingKeyRepeatCount += 1; 4924 } 4925 mPendingKeyMetaState = metaState; 4926 4927 // Note: Normally we would pass FLAG_LONG_PRESS when the repeat count is 1 4928 // but it doesn't quite make sense when simulating the events in this way. 4929 if (LOCAL_DEBUG) { 4930 Log.d(LOCAL_TAG, "Sending key down: keyCode=" + mPendingKeyCode 4931 + ", repeatCount=" + mPendingKeyRepeatCount 4932 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 4933 } 4934 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 4935 KeyEvent.ACTION_DOWN, mPendingKeyCode, mPendingKeyRepeatCount, 4936 mPendingKeyMetaState, mCurrentDeviceId, 4937 KeyEvent.FLAG_FALLBACK, mCurrentSource)); 4938 } 4939 4940 private void sendKeyUp(long time) { 4941 if (mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 4942 if (LOCAL_DEBUG) { 4943 Log.d(LOCAL_TAG, "Sending key up: keyCode=" + mPendingKeyCode 4944 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 4945 } 4946 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 4947 KeyEvent.ACTION_UP, mPendingKeyCode, 0, mPendingKeyMetaState, 4948 mCurrentDeviceId, 0, KeyEvent.FLAG_FALLBACK, 4949 mCurrentSource)); 4950 mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 4951 } 4952 } 4953 4954 private boolean startFling(long time, float vx, float vy) { 4955 if (LOCAL_DEBUG) { 4956 Log.d(LOCAL_TAG, "Considering fling: vx=" + vx + ", vy=" + vy 4957 + ", min=" + mConfigMinFlingVelocity); 4958 } 4959 4960 // Flings must be oriented in the same direction as the preceding movements. 4961 switch (mPendingKeyCode) { 4962 case KeyEvent.KEYCODE_DPAD_LEFT: 4963 if (-vx >= mConfigMinFlingVelocity 4964 && Math.abs(vy) < mConfigMinFlingVelocity) { 4965 mFlingVelocity = -vx; 4966 break; 4967 } 4968 return false; 4969 4970 case KeyEvent.KEYCODE_DPAD_RIGHT: 4971 if (vx >= mConfigMinFlingVelocity 4972 && Math.abs(vy) < mConfigMinFlingVelocity) { 4973 mFlingVelocity = vx; 4974 break; 4975 } 4976 return false; 4977 4978 case KeyEvent.KEYCODE_DPAD_UP: 4979 if (-vy >= mConfigMinFlingVelocity 4980 && Math.abs(vx) < mConfigMinFlingVelocity) { 4981 mFlingVelocity = -vy; 4982 break; 4983 } 4984 return false; 4985 4986 case KeyEvent.KEYCODE_DPAD_DOWN: 4987 if (vy >= mConfigMinFlingVelocity 4988 && Math.abs(vx) < mConfigMinFlingVelocity) { 4989 mFlingVelocity = vy; 4990 break; 4991 } 4992 return false; 4993 } 4994 4995 // Post the first fling event. 4996 mFlinging = postFling(time); 4997 return mFlinging; 4998 } 4999 5000 private boolean postFling(long time) { 5001 // The idea here is to estimate the time when the pointer would have 5002 // traveled one tick distance unit given the current fling velocity. 5003 // This effect creates continuity of motion. 5004 if (mFlingVelocity >= mConfigMinFlingVelocity) { 5005 long delay = (long)(mConfigTickDistance / mFlingVelocity * 1000); 5006 postAtTime(mFlingRunnable, time + delay); 5007 if (LOCAL_DEBUG) { 5008 Log.d(LOCAL_TAG, "Posted fling: velocity=" 5009 + mFlingVelocity + ", delay=" + delay 5010 + ", keyCode=" + mPendingKeyCode); 5011 } 5012 return true; 5013 } 5014 return false; 5015 } 5016 5017 private void cancelFling() { 5018 if (mFlinging) { 5019 removeCallbacks(mFlingRunnable); 5020 mFlinging = false; 5021 } 5022 } 5023 5024 private final Runnable mFlingRunnable = new Runnable() { 5025 @Override 5026 public void run() { 5027 final long time = SystemClock.uptimeMillis(); 5028 sendKeyDownOrRepeat(time, mPendingKeyCode, mPendingKeyMetaState); 5029 mFlingVelocity *= FLING_TICK_DECAY; 5030 if (!postFling(time)) { 5031 mFlinging = false; 5032 finishKeys(time); 5033 } 5034 } 5035 }; 5036 } 5037 5038 final class SyntheticKeyboardHandler { 5039 public void process(KeyEvent event) { 5040 if ((event.getFlags() & KeyEvent.FLAG_FALLBACK) != 0) { 5041 return; 5042 } 5043 5044 final KeyCharacterMap kcm = event.getKeyCharacterMap(); 5045 final int keyCode = event.getKeyCode(); 5046 final int metaState = event.getMetaState(); 5047 5048 // Check for fallback actions specified by the key character map. 5049 KeyCharacterMap.FallbackAction fallbackAction = 5050 kcm.getFallbackAction(keyCode, metaState); 5051 if (fallbackAction != null) { 5052 final int flags = event.getFlags() | KeyEvent.FLAG_FALLBACK; 5053 KeyEvent fallbackEvent = KeyEvent.obtain( 5054 event.getDownTime(), event.getEventTime(), 5055 event.getAction(), fallbackAction.keyCode, 5056 event.getRepeatCount(), fallbackAction.metaState, 5057 event.getDeviceId(), event.getScanCode(), 5058 flags, event.getSource(), null); 5059 fallbackAction.recycle(); 5060 enqueueInputEvent(fallbackEvent); 5061 } 5062 } 5063 } 5064 5065 /** 5066 * Returns true if the key is used for keyboard navigation. 5067 * @param keyEvent The key event. 5068 * @return True if the key is used for keyboard navigation. 5069 */ 5070 private static boolean isNavigationKey(KeyEvent keyEvent) { 5071 switch (keyEvent.getKeyCode()) { 5072 case KeyEvent.KEYCODE_DPAD_LEFT: 5073 case KeyEvent.KEYCODE_DPAD_RIGHT: 5074 case KeyEvent.KEYCODE_DPAD_UP: 5075 case KeyEvent.KEYCODE_DPAD_DOWN: 5076 case KeyEvent.KEYCODE_DPAD_CENTER: 5077 case KeyEvent.KEYCODE_PAGE_UP: 5078 case KeyEvent.KEYCODE_PAGE_DOWN: 5079 case KeyEvent.KEYCODE_MOVE_HOME: 5080 case KeyEvent.KEYCODE_MOVE_END: 5081 case KeyEvent.KEYCODE_TAB: 5082 case KeyEvent.KEYCODE_SPACE: 5083 case KeyEvent.KEYCODE_ENTER: 5084 return true; 5085 } 5086 return false; 5087 } 5088 5089 /** 5090 * Returns true if the key is used for typing. 5091 * @param keyEvent The key event. 5092 * @return True if the key is used for typing. 5093 */ 5094 private static boolean isTypingKey(KeyEvent keyEvent) { 5095 return keyEvent.getUnicodeChar() > 0; 5096 } 5097 5098 /** 5099 * See if the key event means we should leave touch mode (and leave touch mode if so). 5100 * @param event The key event. 5101 * @return Whether this key event should be consumed (meaning the act of 5102 * leaving touch mode alone is considered the event). 5103 */ 5104 private boolean checkForLeavingTouchModeAndConsume(KeyEvent event) { 5105 // Only relevant in touch mode. 5106 if (!mAttachInfo.mInTouchMode) { 5107 return false; 5108 } 5109 5110 // Only consider leaving touch mode on DOWN or MULTIPLE actions, never on UP. 5111 final int action = event.getAction(); 5112 if (action != KeyEvent.ACTION_DOWN && action != KeyEvent.ACTION_MULTIPLE) { 5113 return false; 5114 } 5115 5116 // Don't leave touch mode if the IME told us not to. 5117 if ((event.getFlags() & KeyEvent.FLAG_KEEP_TOUCH_MODE) != 0) { 5118 return false; 5119 } 5120 5121 // If the key can be used for keyboard navigation then leave touch mode 5122 // and select a focused view if needed (in ensureTouchMode). 5123 // When a new focused view is selected, we consume the navigation key because 5124 // navigation doesn't make much sense unless a view already has focus so 5125 // the key's purpose is to set focus. 5126 if (isNavigationKey(event)) { 5127 return ensureTouchMode(false); 5128 } 5129 5130 // If the key can be used for typing then leave touch mode 5131 // and select a focused view if needed (in ensureTouchMode). 5132 // Always allow the view to process the typing key. 5133 if (isTypingKey(event)) { 5134 ensureTouchMode(false); 5135 return false; 5136 } 5137 5138 return false; 5139 } 5140 5141 /* drag/drop */ 5142 void setLocalDragState(Object obj) { 5143 mLocalDragState = obj; 5144 } 5145 5146 private void handleDragEvent(DragEvent event) { 5147 // From the root, only drag start/end/location are dispatched. entered/exited 5148 // are determined and dispatched by the viewgroup hierarchy, who then report 5149 // that back here for ultimate reporting back to the framework. 5150 if (mView != null && mAdded) { 5151 final int what = event.mAction; 5152 5153 if (what == DragEvent.ACTION_DRAG_EXITED) { 5154 // A direct EXITED event means that the window manager knows we've just crossed 5155 // a window boundary, so the current drag target within this one must have 5156 // just been exited. Send it the usual notifications and then we're done 5157 // for now. 5158 mView.dispatchDragEvent(event); 5159 } else { 5160 // Cache the drag description when the operation starts, then fill it in 5161 // on subsequent calls as a convenience 5162 if (what == DragEvent.ACTION_DRAG_STARTED) { 5163 mCurrentDragView = null; // Start the current-recipient tracking 5164 mDragDescription = event.mClipDescription; 5165 } else { 5166 event.mClipDescription = mDragDescription; 5167 } 5168 5169 // For events with a [screen] location, translate into window coordinates 5170 if ((what == DragEvent.ACTION_DRAG_LOCATION) || (what == DragEvent.ACTION_DROP)) { 5171 mDragPoint.set(event.mX, event.mY); 5172 if (mTranslator != null) { 5173 mTranslator.translatePointInScreenToAppWindow(mDragPoint); 5174 } 5175 5176 if (mCurScrollY != 0) { 5177 mDragPoint.offset(0, mCurScrollY); 5178 } 5179 5180 event.mX = mDragPoint.x; 5181 event.mY = mDragPoint.y; 5182 } 5183 5184 // Remember who the current drag target is pre-dispatch 5185 final View prevDragView = mCurrentDragView; 5186 5187 // Now dispatch the drag/drop event 5188 boolean result = mView.dispatchDragEvent(event); 5189 5190 // If we changed apparent drag target, tell the OS about it 5191 if (prevDragView != mCurrentDragView) { 5192 try { 5193 if (prevDragView != null) { 5194 mWindowSession.dragRecipientExited(mWindow); 5195 } 5196 if (mCurrentDragView != null) { 5197 mWindowSession.dragRecipientEntered(mWindow); 5198 } 5199 } catch (RemoteException e) { 5200 Slog.e(TAG, "Unable to note drag target change"); 5201 } 5202 } 5203 5204 // Report the drop result when we're done 5205 if (what == DragEvent.ACTION_DROP) { 5206 mDragDescription = null; 5207 try { 5208 Log.i(TAG, "Reporting drop result: " + result); 5209 mWindowSession.reportDropResult(mWindow, result); 5210 } catch (RemoteException e) { 5211 Log.e(TAG, "Unable to report drop result"); 5212 } 5213 } 5214 5215 // When the drag operation ends, release any local state object 5216 // that may have been in use 5217 if (what == DragEvent.ACTION_DRAG_ENDED) { 5218 setLocalDragState(null); 5219 } 5220 } 5221 } 5222 event.recycle(); 5223 } 5224 5225 public void handleDispatchSystemUiVisibilityChanged(SystemUiVisibilityInfo args) { 5226 if (mSeq != args.seq) { 5227 // The sequence has changed, so we need to update our value and make 5228 // sure to do a traversal afterward so the window manager is given our 5229 // most recent data. 5230 mSeq = args.seq; 5231 mAttachInfo.mForceReportNewAttributes = true; 5232 scheduleTraversals(); 5233 } 5234 if (mView == null) return; 5235 if (args.localChanges != 0) { 5236 mView.updateLocalSystemUiVisibility(args.localValue, args.localChanges); 5237 } 5238 5239 int visibility = args.globalVisibility&View.SYSTEM_UI_CLEARABLE_FLAGS; 5240 if (visibility != mAttachInfo.mGlobalSystemUiVisibility) { 5241 mAttachInfo.mGlobalSystemUiVisibility = visibility; 5242 mView.dispatchSystemUiVisibilityChanged(visibility); 5243 } 5244 } 5245 5246 public void handleDispatchDoneAnimating() { 5247 if (mWindowsAnimating) { 5248 mWindowsAnimating = false; 5249 if (!mDirty.isEmpty() || mIsAnimating || mFullRedrawNeeded) { 5250 scheduleTraversals(); 5251 } 5252 } 5253 } 5254 5255 public void handleDispatchWindowShown() { 5256 mAttachInfo.mTreeObserver.dispatchOnWindowShown(); 5257 } 5258 5259 public void getLastTouchPoint(Point outLocation) { 5260 outLocation.x = (int) mLastTouchPoint.x; 5261 outLocation.y = (int) mLastTouchPoint.y; 5262 } 5263 5264 public void setDragFocus(View newDragTarget) { 5265 if (mCurrentDragView != newDragTarget) { 5266 mCurrentDragView = newDragTarget; 5267 } 5268 } 5269 5270 private AudioManager getAudioManager() { 5271 if (mView == null) { 5272 throw new IllegalStateException("getAudioManager called when there is no mView"); 5273 } 5274 if (mAudioManager == null) { 5275 mAudioManager = (AudioManager) mView.getContext().getSystemService(Context.AUDIO_SERVICE); 5276 } 5277 return mAudioManager; 5278 } 5279 5280 public AccessibilityInteractionController getAccessibilityInteractionController() { 5281 if (mView == null) { 5282 throw new IllegalStateException("getAccessibilityInteractionController" 5283 + " called when there is no mView"); 5284 } 5285 if (mAccessibilityInteractionController == null) { 5286 mAccessibilityInteractionController = new AccessibilityInteractionController(this); 5287 } 5288 return mAccessibilityInteractionController; 5289 } 5290 5291 private int relayoutWindow(WindowManager.LayoutParams params, int viewVisibility, 5292 boolean insetsPending) throws RemoteException { 5293 5294 float appScale = mAttachInfo.mApplicationScale; 5295 boolean restore = false; 5296 if (params != null && mTranslator != null) { 5297 restore = true; 5298 params.backup(); 5299 mTranslator.translateWindowLayout(params); 5300 } 5301 if (params != null) { 5302 if (DBG) Log.d(TAG, "WindowLayout in layoutWindow:" + params); 5303 } 5304 mPendingConfiguration.seq = 0; 5305 //Log.d(TAG, ">>>>>> CALLING relayout"); 5306 if (params != null && mOrigWindowType != params.type) { 5307 // For compatibility with old apps, don't crash here. 5308 if (mTargetSdkVersion < android.os.Build.VERSION_CODES.ICE_CREAM_SANDWICH) { 5309 Slog.w(TAG, "Window type can not be changed after " 5310 + "the window is added; ignoring change of " + mView); 5311 params.type = mOrigWindowType; 5312 } 5313 } 5314 int relayoutResult = mWindowSession.relayout( 5315 mWindow, mSeq, params, 5316 (int) (mView.getMeasuredWidth() * appScale + 0.5f), 5317 (int) (mView.getMeasuredHeight() * appScale + 0.5f), 5318 viewVisibility, insetsPending ? WindowManagerGlobal.RELAYOUT_INSETS_PENDING : 0, 5319 mWinFrame, mPendingOverscanInsets, mPendingContentInsets, mPendingVisibleInsets, 5320 mPendingStableInsets, mPendingConfiguration, mSurface); 5321 //Log.d(TAG, "<<<<<< BACK FROM relayout"); 5322 if (restore) { 5323 params.restore(); 5324 } 5325 5326 if (mTranslator != null) { 5327 mTranslator.translateRectInScreenToAppWinFrame(mWinFrame); 5328 mTranslator.translateRectInScreenToAppWindow(mPendingOverscanInsets); 5329 mTranslator.translateRectInScreenToAppWindow(mPendingContentInsets); 5330 mTranslator.translateRectInScreenToAppWindow(mPendingVisibleInsets); 5331 mTranslator.translateRectInScreenToAppWindow(mPendingStableInsets); 5332 } 5333 return relayoutResult; 5334 } 5335 5336 /** 5337 * {@inheritDoc} 5338 */ 5339 @Override 5340 public void playSoundEffect(int effectId) { 5341 checkThread(); 5342 5343 if (mMediaDisabled) { 5344 return; 5345 } 5346 5347 try { 5348 final AudioManager audioManager = getAudioManager(); 5349 5350 switch (effectId) { 5351 case SoundEffectConstants.CLICK: 5352 audioManager.playSoundEffect(AudioManager.FX_KEY_CLICK); 5353 return; 5354 case SoundEffectConstants.NAVIGATION_DOWN: 5355 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_DOWN); 5356 return; 5357 case SoundEffectConstants.NAVIGATION_LEFT: 5358 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_LEFT); 5359 return; 5360 case SoundEffectConstants.NAVIGATION_RIGHT: 5361 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_RIGHT); 5362 return; 5363 case SoundEffectConstants.NAVIGATION_UP: 5364 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_UP); 5365 return; 5366 default: 5367 throw new IllegalArgumentException("unknown effect id " + effectId + 5368 " not defined in " + SoundEffectConstants.class.getCanonicalName()); 5369 } 5370 } catch (IllegalStateException e) { 5371 // Exception thrown by getAudioManager() when mView is null 5372 Log.e(TAG, "FATAL EXCEPTION when attempting to play sound effect: " + e); 5373 e.printStackTrace(); 5374 } 5375 } 5376 5377 /** 5378 * {@inheritDoc} 5379 */ 5380 @Override 5381 public boolean performHapticFeedback(int effectId, boolean always) { 5382 try { 5383 return mWindowSession.performHapticFeedback(mWindow, effectId, always); 5384 } catch (RemoteException e) { 5385 return false; 5386 } 5387 } 5388 5389 /** 5390 * {@inheritDoc} 5391 */ 5392 @Override 5393 public View focusSearch(View focused, int direction) { 5394 checkThread(); 5395 if (!(mView instanceof ViewGroup)) { 5396 return null; 5397 } 5398 return FocusFinder.getInstance().findNextFocus((ViewGroup) mView, focused, direction); 5399 } 5400 5401 public void debug() { 5402 mView.debug(); 5403 } 5404 5405 public void dump(String prefix, FileDescriptor fd, PrintWriter writer, String[] args) { 5406 String innerPrefix = prefix + " "; 5407 writer.print(prefix); writer.println("ViewRoot:"); 5408 writer.print(innerPrefix); writer.print("mAdded="); writer.print(mAdded); 5409 writer.print(" mRemoved="); writer.println(mRemoved); 5410 writer.print(innerPrefix); writer.print("mConsumeBatchedInputScheduled="); 5411 writer.println(mConsumeBatchedInputScheduled); 5412 writer.print(innerPrefix); writer.print("mConsumeBatchedInputImmediatelyScheduled="); 5413 writer.println(mConsumeBatchedInputImmediatelyScheduled); 5414 writer.print(innerPrefix); writer.print("mPendingInputEventCount="); 5415 writer.println(mPendingInputEventCount); 5416 writer.print(innerPrefix); writer.print("mProcessInputEventsScheduled="); 5417 writer.println(mProcessInputEventsScheduled); 5418 writer.print(innerPrefix); writer.print("mTraversalScheduled="); 5419 writer.print(mTraversalScheduled); 5420 if (mTraversalScheduled) { 5421 writer.print(" (barrier="); writer.print(mTraversalBarrier); writer.println(")"); 5422 } else { 5423 writer.println(); 5424 } 5425 mFirstInputStage.dump(innerPrefix, writer); 5426 5427 mChoreographer.dump(prefix, writer); 5428 5429 writer.print(prefix); writer.println("View Hierarchy:"); 5430 dumpViewHierarchy(innerPrefix, writer, mView); 5431 } 5432 5433 private void dumpViewHierarchy(String prefix, PrintWriter writer, View view) { 5434 writer.print(prefix); 5435 if (view == null) { 5436 writer.println("null"); 5437 return; 5438 } 5439 writer.println(view.toString()); 5440 if (!(view instanceof ViewGroup)) { 5441 return; 5442 } 5443 ViewGroup grp = (ViewGroup)view; 5444 final int N = grp.getChildCount(); 5445 if (N <= 0) { 5446 return; 5447 } 5448 prefix = prefix + " "; 5449 for (int i=0; i<N; i++) { 5450 dumpViewHierarchy(prefix, writer, grp.getChildAt(i)); 5451 } 5452 } 5453 5454 public void dumpGfxInfo(int[] info) { 5455 info[0] = info[1] = 0; 5456 if (mView != null) { 5457 getGfxInfo(mView, info); 5458 } 5459 } 5460 5461 private static void getGfxInfo(View view, int[] info) { 5462 RenderNode renderNode = view.mRenderNode; 5463 info[0]++; 5464 if (renderNode != null) { 5465 info[1] += renderNode.getDebugSize(); 5466 } 5467 5468 if (view instanceof ViewGroup) { 5469 ViewGroup group = (ViewGroup) view; 5470 5471 int count = group.getChildCount(); 5472 for (int i = 0; i < count; i++) { 5473 getGfxInfo(group.getChildAt(i), info); 5474 } 5475 } 5476 } 5477 5478 /** 5479 * @param immediate True, do now if not in traversal. False, put on queue and do later. 5480 * @return True, request has been queued. False, request has been completed. 5481 */ 5482 boolean die(boolean immediate) { 5483 // Make sure we do execute immediately if we are in the middle of a traversal or the damage 5484 // done by dispatchDetachedFromWindow will cause havoc on return. 5485 if (immediate && !mIsInTraversal) { 5486 doDie(); 5487 return false; 5488 } 5489 5490 if (!mIsDrawing) { 5491 destroyHardwareRenderer(); 5492 } else { 5493 Log.e(TAG, "Attempting to destroy the window while drawing!\n" + 5494 " window=" + this + ", title=" + mWindowAttributes.getTitle()); 5495 } 5496 mHandler.sendEmptyMessage(MSG_DIE); 5497 return true; 5498 } 5499 5500 void doDie() { 5501 checkThread(); 5502 if (LOCAL_LOGV) Log.v(TAG, "DIE in " + this + " of " + mSurface); 5503 synchronized (this) { 5504 if (mRemoved) { 5505 return; 5506 } 5507 mRemoved = true; 5508 if (mAdded) { 5509 dispatchDetachedFromWindow(); 5510 } 5511 5512 if (mAdded && !mFirst) { 5513 destroyHardwareRenderer(); 5514 5515 if (mView != null) { 5516 int viewVisibility = mView.getVisibility(); 5517 boolean viewVisibilityChanged = mViewVisibility != viewVisibility; 5518 if (mWindowAttributesChanged || viewVisibilityChanged) { 5519 // If layout params have been changed, first give them 5520 // to the window manager to make sure it has the correct 5521 // animation info. 5522 try { 5523 if ((relayoutWindow(mWindowAttributes, viewVisibility, false) 5524 & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 5525 mWindowSession.finishDrawing(mWindow); 5526 } 5527 } catch (RemoteException e) { 5528 } 5529 } 5530 5531 mSurface.release(); 5532 } 5533 } 5534 5535 mAdded = false; 5536 } 5537 WindowManagerGlobal.getInstance().doRemoveView(this); 5538 } 5539 5540 public void requestUpdateConfiguration(Configuration config) { 5541 Message msg = mHandler.obtainMessage(MSG_UPDATE_CONFIGURATION, config); 5542 mHandler.sendMessage(msg); 5543 } 5544 5545 public void loadSystemProperties() { 5546 mHandler.post(new Runnable() { 5547 @Override 5548 public void run() { 5549 // Profiling 5550 mProfileRendering = SystemProperties.getBoolean(PROPERTY_PROFILE_RENDERING, false); 5551 profileRendering(mAttachInfo.mHasWindowFocus); 5552 5553 // Media (used by sound effects) 5554 mMediaDisabled = SystemProperties.getBoolean(PROPERTY_MEDIA_DISABLED, false); 5555 5556 // Hardware rendering 5557 if (mAttachInfo.mHardwareRenderer != null) { 5558 if (mAttachInfo.mHardwareRenderer.loadSystemProperties()) { 5559 invalidate(); 5560 } 5561 } 5562 5563 // Layout debugging 5564 boolean layout = SystemProperties.getBoolean(View.DEBUG_LAYOUT_PROPERTY, false); 5565 if (layout != mAttachInfo.mDebugLayout) { 5566 mAttachInfo.mDebugLayout = layout; 5567 if (!mHandler.hasMessages(MSG_INVALIDATE_WORLD)) { 5568 mHandler.sendEmptyMessageDelayed(MSG_INVALIDATE_WORLD, 200); 5569 } 5570 } 5571 5572 // detect emulator 5573 mIsEmulator = Build.HARDWARE.contains("goldfish"); 5574 mIsCircularEmulator = 5575 SystemProperties.getBoolean(PROPERTY_EMULATOR_CIRCULAR, false); 5576 } 5577 }); 5578 } 5579 5580 private void destroyHardwareRenderer() { 5581 HardwareRenderer hardwareRenderer = mAttachInfo.mHardwareRenderer; 5582 5583 if (hardwareRenderer != null) { 5584 if (mView != null) { 5585 hardwareRenderer.destroyHardwareResources(mView); 5586 } 5587 hardwareRenderer.destroy(); 5588 hardwareRenderer.setRequested(false); 5589 5590 mAttachInfo.mHardwareRenderer = null; 5591 mAttachInfo.mHardwareAccelerated = false; 5592 } 5593 } 5594 5595 public void dispatchFinishInputConnection(InputConnection connection) { 5596 Message msg = mHandler.obtainMessage(MSG_FINISH_INPUT_CONNECTION, connection); 5597 mHandler.sendMessage(msg); 5598 } 5599 5600 public void dispatchResized(Rect frame, Rect overscanInsets, Rect contentInsets, 5601 Rect visibleInsets, Rect stableInsets, boolean reportDraw, Configuration newConfig) { 5602 if (DEBUG_LAYOUT) Log.v(TAG, "Resizing " + this + ": frame=" + frame.toShortString() 5603 + " contentInsets=" + contentInsets.toShortString() 5604 + " visibleInsets=" + visibleInsets.toShortString() 5605 + " reportDraw=" + reportDraw); 5606 Message msg = mHandler.obtainMessage(reportDraw ? MSG_RESIZED_REPORT : MSG_RESIZED); 5607 if (mTranslator != null) { 5608 mTranslator.translateRectInScreenToAppWindow(frame); 5609 mTranslator.translateRectInScreenToAppWindow(overscanInsets); 5610 mTranslator.translateRectInScreenToAppWindow(contentInsets); 5611 mTranslator.translateRectInScreenToAppWindow(visibleInsets); 5612 } 5613 SomeArgs args = SomeArgs.obtain(); 5614 final boolean sameProcessCall = (Binder.getCallingPid() == android.os.Process.myPid()); 5615 args.arg1 = sameProcessCall ? new Rect(frame) : frame; 5616 args.arg2 = sameProcessCall ? new Rect(contentInsets) : contentInsets; 5617 args.arg3 = sameProcessCall ? new Rect(visibleInsets) : visibleInsets; 5618 args.arg4 = sameProcessCall && newConfig != null ? new Configuration(newConfig) : newConfig; 5619 args.arg5 = sameProcessCall ? new Rect(overscanInsets) : overscanInsets; 5620 args.arg6 = sameProcessCall ? new Rect(stableInsets) : stableInsets; 5621 msg.obj = args; 5622 mHandler.sendMessage(msg); 5623 } 5624 5625 public void dispatchMoved(int newX, int newY) { 5626 if (DEBUG_LAYOUT) Log.v(TAG, "Window moved " + this + ": newX=" + newX + " newY=" + newY); 5627 if (mTranslator != null) { 5628 PointF point = new PointF(newX, newY); 5629 mTranslator.translatePointInScreenToAppWindow(point); 5630 newX = (int) (point.x + 0.5); 5631 newY = (int) (point.y + 0.5); 5632 } 5633 Message msg = mHandler.obtainMessage(MSG_WINDOW_MOVED, newX, newY); 5634 mHandler.sendMessage(msg); 5635 } 5636 5637 /** 5638 * Represents a pending input event that is waiting in a queue. 5639 * 5640 * Input events are processed in serial order by the timestamp specified by 5641 * {@link InputEvent#getEventTimeNano()}. In general, the input dispatcher delivers 5642 * one input event to the application at a time and waits for the application 5643 * to finish handling it before delivering the next one. 5644 * 5645 * However, because the application or IME can synthesize and inject multiple 5646 * key events at a time without going through the input dispatcher, we end up 5647 * needing a queue on the application's side. 5648 */ 5649 private static final class QueuedInputEvent { 5650 public static final int FLAG_DELIVER_POST_IME = 1 << 0; 5651 public static final int FLAG_DEFERRED = 1 << 1; 5652 public static final int FLAG_FINISHED = 1 << 2; 5653 public static final int FLAG_FINISHED_HANDLED = 1 << 3; 5654 public static final int FLAG_RESYNTHESIZED = 1 << 4; 5655 public static final int FLAG_UNHANDLED = 1 << 5; 5656 5657 public QueuedInputEvent mNext; 5658 5659 public InputEvent mEvent; 5660 public InputEventReceiver mReceiver; 5661 public int mFlags; 5662 5663 public boolean shouldSkipIme() { 5664 if ((mFlags & FLAG_DELIVER_POST_IME) != 0) { 5665 return true; 5666 } 5667 return mEvent instanceof MotionEvent 5668 && mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER); 5669 } 5670 5671 public boolean shouldSendToSynthesizer() { 5672 if ((mFlags & FLAG_UNHANDLED) != 0) { 5673 return true; 5674 } 5675 5676 return false; 5677 } 5678 5679 @Override 5680 public String toString() { 5681 StringBuilder sb = new StringBuilder("QueuedInputEvent{flags="); 5682 boolean hasPrevious = false; 5683 hasPrevious = flagToString("DELIVER_POST_IME", FLAG_DELIVER_POST_IME, hasPrevious, sb); 5684 hasPrevious = flagToString("DEFERRED", FLAG_DEFERRED, hasPrevious, sb); 5685 hasPrevious = flagToString("FINISHED", FLAG_FINISHED, hasPrevious, sb); 5686 hasPrevious = flagToString("FINISHED_HANDLED", FLAG_FINISHED_HANDLED, hasPrevious, sb); 5687 hasPrevious = flagToString("RESYNTHESIZED", FLAG_RESYNTHESIZED, hasPrevious, sb); 5688 hasPrevious = flagToString("UNHANDLED", FLAG_UNHANDLED, hasPrevious, sb); 5689 if (!hasPrevious) { 5690 sb.append("0"); 5691 } 5692 sb.append(", hasNextQueuedEvent=" + (mEvent != null ? "true" : "false")); 5693 sb.append(", hasInputEventReceiver=" + (mReceiver != null ? "true" : "false")); 5694 sb.append(", mEvent=" + mEvent + "}"); 5695 return sb.toString(); 5696 } 5697 5698 private boolean flagToString(String name, int flag, 5699 boolean hasPrevious, StringBuilder sb) { 5700 if ((mFlags & flag) != 0) { 5701 if (hasPrevious) { 5702 sb.append("|"); 5703 } 5704 sb.append(name); 5705 return true; 5706 } 5707 return hasPrevious; 5708 } 5709 } 5710 5711 private QueuedInputEvent obtainQueuedInputEvent(InputEvent event, 5712 InputEventReceiver receiver, int flags) { 5713 QueuedInputEvent q = mQueuedInputEventPool; 5714 if (q != null) { 5715 mQueuedInputEventPoolSize -= 1; 5716 mQueuedInputEventPool = q.mNext; 5717 q.mNext = null; 5718 } else { 5719 q = new QueuedInputEvent(); 5720 } 5721 5722 q.mEvent = event; 5723 q.mReceiver = receiver; 5724 q.mFlags = flags; 5725 return q; 5726 } 5727 5728 private void recycleQueuedInputEvent(QueuedInputEvent q) { 5729 q.mEvent = null; 5730 q.mReceiver = null; 5731 5732 if (mQueuedInputEventPoolSize < MAX_QUEUED_INPUT_EVENT_POOL_SIZE) { 5733 mQueuedInputEventPoolSize += 1; 5734 q.mNext = mQueuedInputEventPool; 5735 mQueuedInputEventPool = q; 5736 } 5737 } 5738 5739 void enqueueInputEvent(InputEvent event) { 5740 enqueueInputEvent(event, null, 0, false); 5741 } 5742 5743 void enqueueInputEvent(InputEvent event, 5744 InputEventReceiver receiver, int flags, boolean processImmediately) { 5745 QueuedInputEvent q = obtainQueuedInputEvent(event, receiver, flags); 5746 5747 // Always enqueue the input event in order, regardless of its time stamp. 5748 // We do this because the application or the IME may inject key events 5749 // in response to touch events and we want to ensure that the injected keys 5750 // are processed in the order they were received and we cannot trust that 5751 // the time stamp of injected events are monotonic. 5752 QueuedInputEvent last = mPendingInputEventTail; 5753 if (last == null) { 5754 mPendingInputEventHead = q; 5755 mPendingInputEventTail = q; 5756 } else { 5757 last.mNext = q; 5758 mPendingInputEventTail = q; 5759 } 5760 mPendingInputEventCount += 1; 5761 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 5762 mPendingInputEventCount); 5763 5764 if (processImmediately) { 5765 doProcessInputEvents(); 5766 } else { 5767 scheduleProcessInputEvents(); 5768 } 5769 } 5770 5771 private void scheduleProcessInputEvents() { 5772 if (!mProcessInputEventsScheduled) { 5773 mProcessInputEventsScheduled = true; 5774 Message msg = mHandler.obtainMessage(MSG_PROCESS_INPUT_EVENTS); 5775 msg.setAsynchronous(true); 5776 mHandler.sendMessage(msg); 5777 } 5778 } 5779 5780 void doProcessInputEvents() { 5781 // Deliver all pending input events in the queue. 5782 while (mPendingInputEventHead != null) { 5783 QueuedInputEvent q = mPendingInputEventHead; 5784 mPendingInputEventHead = q.mNext; 5785 if (mPendingInputEventHead == null) { 5786 mPendingInputEventTail = null; 5787 } 5788 q.mNext = null; 5789 5790 mPendingInputEventCount -= 1; 5791 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 5792 mPendingInputEventCount); 5793 5794 long eventTime = q.mEvent.getEventTimeNano(); 5795 long oldestEventTime = eventTime; 5796 if (q.mEvent instanceof MotionEvent) { 5797 MotionEvent me = (MotionEvent)q.mEvent; 5798 if (me.getHistorySize() > 0) { 5799 oldestEventTime = me.getHistoricalEventTimeNano(0); 5800 } 5801 } 5802 mChoreographer.mFrameInfo.updateInputEventTime(eventTime, oldestEventTime); 5803 5804 deliverInputEvent(q); 5805 } 5806 5807 // We are done processing all input events that we can process right now 5808 // so we can clear the pending flag immediately. 5809 if (mProcessInputEventsScheduled) { 5810 mProcessInputEventsScheduled = false; 5811 mHandler.removeMessages(MSG_PROCESS_INPUT_EVENTS); 5812 } 5813 } 5814 5815 private void deliverInputEvent(QueuedInputEvent q) { 5816 Trace.asyncTraceBegin(Trace.TRACE_TAG_VIEW, "deliverInputEvent", 5817 q.mEvent.getSequenceNumber()); 5818 if (mInputEventConsistencyVerifier != null) { 5819 mInputEventConsistencyVerifier.onInputEvent(q.mEvent, 0); 5820 } 5821 5822 InputStage stage; 5823 if (q.shouldSendToSynthesizer()) { 5824 stage = mSyntheticInputStage; 5825 } else { 5826 stage = q.shouldSkipIme() ? mFirstPostImeInputStage : mFirstInputStage; 5827 } 5828 5829 if (stage != null) { 5830 stage.deliver(q); 5831 } else { 5832 finishInputEvent(q); 5833 } 5834 } 5835 5836 private void finishInputEvent(QueuedInputEvent q) { 5837 Trace.asyncTraceEnd(Trace.TRACE_TAG_VIEW, "deliverInputEvent", 5838 q.mEvent.getSequenceNumber()); 5839 5840 if (q.mReceiver != null) { 5841 boolean handled = (q.mFlags & QueuedInputEvent.FLAG_FINISHED_HANDLED) != 0; 5842 q.mReceiver.finishInputEvent(q.mEvent, handled); 5843 } else { 5844 q.mEvent.recycleIfNeededAfterDispatch(); 5845 } 5846 5847 recycleQueuedInputEvent(q); 5848 } 5849 5850 static boolean isTerminalInputEvent(InputEvent event) { 5851 if (event instanceof KeyEvent) { 5852 final KeyEvent keyEvent = (KeyEvent)event; 5853 return keyEvent.getAction() == KeyEvent.ACTION_UP; 5854 } else { 5855 final MotionEvent motionEvent = (MotionEvent)event; 5856 final int action = motionEvent.getAction(); 5857 return action == MotionEvent.ACTION_UP 5858 || action == MotionEvent.ACTION_CANCEL 5859 || action == MotionEvent.ACTION_HOVER_EXIT; 5860 } 5861 } 5862 5863 void scheduleConsumeBatchedInput() { 5864 if (!mConsumeBatchedInputScheduled) { 5865 mConsumeBatchedInputScheduled = true; 5866 mChoreographer.postCallback(Choreographer.CALLBACK_INPUT, 5867 mConsumedBatchedInputRunnable, null); 5868 } 5869 } 5870 5871 void unscheduleConsumeBatchedInput() { 5872 if (mConsumeBatchedInputScheduled) { 5873 mConsumeBatchedInputScheduled = false; 5874 mChoreographer.removeCallbacks(Choreographer.CALLBACK_INPUT, 5875 mConsumedBatchedInputRunnable, null); 5876 } 5877 } 5878 5879 void scheduleConsumeBatchedInputImmediately() { 5880 if (!mConsumeBatchedInputImmediatelyScheduled) { 5881 unscheduleConsumeBatchedInput(); 5882 mConsumeBatchedInputImmediatelyScheduled = true; 5883 mHandler.post(mConsumeBatchedInputImmediatelyRunnable); 5884 } 5885 } 5886 5887 void doConsumeBatchedInput(long frameTimeNanos) { 5888 if (mConsumeBatchedInputScheduled) { 5889 mConsumeBatchedInputScheduled = false; 5890 if (mInputEventReceiver != null) { 5891 if (mInputEventReceiver.consumeBatchedInputEvents(frameTimeNanos) 5892 && frameTimeNanos != -1) { 5893 // If we consumed a batch here, we want to go ahead and schedule the 5894 // consumption of batched input events on the next frame. Otherwise, we would 5895 // wait until we have more input events pending and might get starved by other 5896 // things occurring in the process. If the frame time is -1, however, then 5897 // we're in a non-batching mode, so there's no need to schedule this. 5898 scheduleConsumeBatchedInput(); 5899 } 5900 } 5901 doProcessInputEvents(); 5902 } 5903 } 5904 5905 final class TraversalRunnable implements Runnable { 5906 @Override 5907 public void run() { 5908 doTraversal(); 5909 } 5910 } 5911 final TraversalRunnable mTraversalRunnable = new TraversalRunnable(); 5912 5913 final class WindowInputEventReceiver extends InputEventReceiver { 5914 public WindowInputEventReceiver(InputChannel inputChannel, Looper looper) { 5915 super(inputChannel, looper); 5916 } 5917 5918 @Override 5919 public void onInputEvent(InputEvent event) { 5920 enqueueInputEvent(event, this, 0, true); 5921 } 5922 5923 @Override 5924 public void onBatchedInputEventPending() { 5925 if (mUnbufferedInputDispatch) { 5926 super.onBatchedInputEventPending(); 5927 } else { 5928 scheduleConsumeBatchedInput(); 5929 } 5930 } 5931 5932 @Override 5933 public void dispose() { 5934 unscheduleConsumeBatchedInput(); 5935 super.dispose(); 5936 } 5937 } 5938 WindowInputEventReceiver mInputEventReceiver; 5939 5940 final class ConsumeBatchedInputRunnable implements Runnable { 5941 @Override 5942 public void run() { 5943 doConsumeBatchedInput(mChoreographer.getFrameTimeNanos()); 5944 } 5945 } 5946 final ConsumeBatchedInputRunnable mConsumedBatchedInputRunnable = 5947 new ConsumeBatchedInputRunnable(); 5948 boolean mConsumeBatchedInputScheduled; 5949 5950 final class ConsumeBatchedInputImmediatelyRunnable implements Runnable { 5951 @Override 5952 public void run() { 5953 doConsumeBatchedInput(-1); 5954 } 5955 } 5956 final ConsumeBatchedInputImmediatelyRunnable mConsumeBatchedInputImmediatelyRunnable = 5957 new ConsumeBatchedInputImmediatelyRunnable(); 5958 boolean mConsumeBatchedInputImmediatelyScheduled; 5959 5960 final class InvalidateOnAnimationRunnable implements Runnable { 5961 private boolean mPosted; 5962 private final ArrayList<View> mViews = new ArrayList<View>(); 5963 private final ArrayList<AttachInfo.InvalidateInfo> mViewRects = 5964 new ArrayList<AttachInfo.InvalidateInfo>(); 5965 private View[] mTempViews; 5966 private AttachInfo.InvalidateInfo[] mTempViewRects; 5967 5968 public void addView(View view) { 5969 synchronized (this) { 5970 mViews.add(view); 5971 postIfNeededLocked(); 5972 } 5973 } 5974 5975 public void addViewRect(AttachInfo.InvalidateInfo info) { 5976 synchronized (this) { 5977 mViewRects.add(info); 5978 postIfNeededLocked(); 5979 } 5980 } 5981 5982 public void removeView(View view) { 5983 synchronized (this) { 5984 mViews.remove(view); 5985 5986 for (int i = mViewRects.size(); i-- > 0; ) { 5987 AttachInfo.InvalidateInfo info = mViewRects.get(i); 5988 if (info.target == view) { 5989 mViewRects.remove(i); 5990 info.recycle(); 5991 } 5992 } 5993 5994 if (mPosted && mViews.isEmpty() && mViewRects.isEmpty()) { 5995 mChoreographer.removeCallbacks(Choreographer.CALLBACK_ANIMATION, this, null); 5996 mPosted = false; 5997 } 5998 } 5999 } 6000 6001 @Override 6002 public void run() { 6003 final int viewCount; 6004 final int viewRectCount; 6005 synchronized (this) { 6006 mPosted = false; 6007 6008 viewCount = mViews.size(); 6009 if (viewCount != 0) { 6010 mTempViews = mViews.toArray(mTempViews != null 6011 ? mTempViews : new View[viewCount]); 6012 mViews.clear(); 6013 } 6014 6015 viewRectCount = mViewRects.size(); 6016 if (viewRectCount != 0) { 6017 mTempViewRects = mViewRects.toArray(mTempViewRects != null 6018 ? mTempViewRects : new AttachInfo.InvalidateInfo[viewRectCount]); 6019 mViewRects.clear(); 6020 } 6021 } 6022 6023 for (int i = 0; i < viewCount; i++) { 6024 mTempViews[i].invalidate(); 6025 mTempViews[i] = null; 6026 } 6027 6028 for (int i = 0; i < viewRectCount; i++) { 6029 final View.AttachInfo.InvalidateInfo info = mTempViewRects[i]; 6030 info.target.invalidate(info.left, info.top, info.right, info.bottom); 6031 info.recycle(); 6032 } 6033 } 6034 6035 private void postIfNeededLocked() { 6036 if (!mPosted) { 6037 mChoreographer.postCallback(Choreographer.CALLBACK_ANIMATION, this, null); 6038 mPosted = true; 6039 } 6040 } 6041 } 6042 final InvalidateOnAnimationRunnable mInvalidateOnAnimationRunnable = 6043 new InvalidateOnAnimationRunnable(); 6044 6045 public void dispatchInvalidateDelayed(View view, long delayMilliseconds) { 6046 Message msg = mHandler.obtainMessage(MSG_INVALIDATE, view); 6047 mHandler.sendMessageDelayed(msg, delayMilliseconds); 6048 } 6049 6050 public void dispatchInvalidateRectDelayed(AttachInfo.InvalidateInfo info, 6051 long delayMilliseconds) { 6052 final Message msg = mHandler.obtainMessage(MSG_INVALIDATE_RECT, info); 6053 mHandler.sendMessageDelayed(msg, delayMilliseconds); 6054 } 6055 6056 public void dispatchInvalidateOnAnimation(View view) { 6057 mInvalidateOnAnimationRunnable.addView(view); 6058 } 6059 6060 public void dispatchInvalidateRectOnAnimation(AttachInfo.InvalidateInfo info) { 6061 mInvalidateOnAnimationRunnable.addViewRect(info); 6062 } 6063 6064 public void cancelInvalidate(View view) { 6065 mHandler.removeMessages(MSG_INVALIDATE, view); 6066 // fixme: might leak the AttachInfo.InvalidateInfo objects instead of returning 6067 // them to the pool 6068 mHandler.removeMessages(MSG_INVALIDATE_RECT, view); 6069 mInvalidateOnAnimationRunnable.removeView(view); 6070 } 6071 6072 public void dispatchInputEvent(InputEvent event) { 6073 dispatchInputEvent(event, null); 6074 } 6075 6076 public void dispatchInputEvent(InputEvent event, InputEventReceiver receiver) { 6077 SomeArgs args = SomeArgs.obtain(); 6078 args.arg1 = event; 6079 args.arg2 = receiver; 6080 Message msg = mHandler.obtainMessage(MSG_DISPATCH_INPUT_EVENT, args); 6081 msg.setAsynchronous(true); 6082 mHandler.sendMessage(msg); 6083 } 6084 6085 public void synthesizeInputEvent(InputEvent event) { 6086 Message msg = mHandler.obtainMessage(MSG_SYNTHESIZE_INPUT_EVENT, event); 6087 msg.setAsynchronous(true); 6088 mHandler.sendMessage(msg); 6089 } 6090 6091 public void dispatchKeyFromIme(KeyEvent event) { 6092 Message msg = mHandler.obtainMessage(MSG_DISPATCH_KEY_FROM_IME, event); 6093 msg.setAsynchronous(true); 6094 mHandler.sendMessage(msg); 6095 } 6096 6097 /** 6098 * Reinject unhandled {@link InputEvent}s in order to synthesize fallbacks events. 6099 * 6100 * Note that it is the responsibility of the caller of this API to recycle the InputEvent it 6101 * passes in. 6102 */ 6103 public void dispatchUnhandledInputEvent(InputEvent event) { 6104 if (event instanceof MotionEvent) { 6105 event = MotionEvent.obtain((MotionEvent) event); 6106 } 6107 synthesizeInputEvent(event); 6108 } 6109 6110 public void dispatchAppVisibility(boolean visible) { 6111 Message msg = mHandler.obtainMessage(MSG_DISPATCH_APP_VISIBILITY); 6112 msg.arg1 = visible ? 1 : 0; 6113 mHandler.sendMessage(msg); 6114 } 6115 6116 public void dispatchGetNewSurface() { 6117 Message msg = mHandler.obtainMessage(MSG_DISPATCH_GET_NEW_SURFACE); 6118 mHandler.sendMessage(msg); 6119 } 6120 6121 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 6122 Message msg = Message.obtain(); 6123 msg.what = MSG_WINDOW_FOCUS_CHANGED; 6124 msg.arg1 = hasFocus ? 1 : 0; 6125 msg.arg2 = inTouchMode ? 1 : 0; 6126 mHandler.sendMessage(msg); 6127 } 6128 6129 public void dispatchWindowShown() { 6130 mHandler.sendEmptyMessage(MSG_DISPATCH_WINDOW_SHOWN); 6131 } 6132 6133 public void dispatchCloseSystemDialogs(String reason) { 6134 Message msg = Message.obtain(); 6135 msg.what = MSG_CLOSE_SYSTEM_DIALOGS; 6136 msg.obj = reason; 6137 mHandler.sendMessage(msg); 6138 } 6139 6140 public void dispatchDragEvent(DragEvent event) { 6141 final int what; 6142 if (event.getAction() == DragEvent.ACTION_DRAG_LOCATION) { 6143 what = MSG_DISPATCH_DRAG_LOCATION_EVENT; 6144 mHandler.removeMessages(what); 6145 } else { 6146 what = MSG_DISPATCH_DRAG_EVENT; 6147 } 6148 Message msg = mHandler.obtainMessage(what, event); 6149 mHandler.sendMessage(msg); 6150 } 6151 6152 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 6153 int localValue, int localChanges) { 6154 SystemUiVisibilityInfo args = new SystemUiVisibilityInfo(); 6155 args.seq = seq; 6156 args.globalVisibility = globalVisibility; 6157 args.localValue = localValue; 6158 args.localChanges = localChanges; 6159 mHandler.sendMessage(mHandler.obtainMessage(MSG_DISPATCH_SYSTEM_UI_VISIBILITY, args)); 6160 } 6161 6162 public void dispatchDoneAnimating() { 6163 mHandler.sendEmptyMessage(MSG_DISPATCH_DONE_ANIMATING); 6164 } 6165 6166 public void dispatchCheckFocus() { 6167 if (!mHandler.hasMessages(MSG_CHECK_FOCUS)) { 6168 // This will result in a call to checkFocus() below. 6169 mHandler.sendEmptyMessage(MSG_CHECK_FOCUS); 6170 } 6171 } 6172 6173 /** 6174 * Post a callback to send a 6175 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 6176 * This event is send at most once every 6177 * {@link ViewConfiguration#getSendRecurringAccessibilityEventsInterval()}. 6178 */ 6179 private void postSendWindowContentChangedCallback(View source, int changeType) { 6180 if (mSendWindowContentChangedAccessibilityEvent == null) { 6181 mSendWindowContentChangedAccessibilityEvent = 6182 new SendWindowContentChangedAccessibilityEvent(); 6183 } 6184 mSendWindowContentChangedAccessibilityEvent.runOrPost(source, changeType); 6185 } 6186 6187 /** 6188 * Remove a posted callback to send a 6189 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 6190 */ 6191 private void removeSendWindowContentChangedCallback() { 6192 if (mSendWindowContentChangedAccessibilityEvent != null) { 6193 mHandler.removeCallbacks(mSendWindowContentChangedAccessibilityEvent); 6194 } 6195 } 6196 6197 @Override 6198 public boolean showContextMenuForChild(View originalView) { 6199 return false; 6200 } 6201 6202 @Override 6203 public ActionMode startActionModeForChild(View originalView, ActionMode.Callback callback) { 6204 return null; 6205 } 6206 6207 @Override 6208 public void createContextMenu(ContextMenu menu) { 6209 } 6210 6211 @Override 6212 public void childDrawableStateChanged(View child) { 6213 } 6214 6215 @Override 6216 public boolean requestSendAccessibilityEvent(View child, AccessibilityEvent event) { 6217 if (mView == null) { 6218 return false; 6219 } 6220 // Intercept accessibility focus events fired by virtual nodes to keep 6221 // track of accessibility focus position in such nodes. 6222 final int eventType = event.getEventType(); 6223 switch (eventType) { 6224 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUSED: { 6225 final long sourceNodeId = event.getSourceNodeId(); 6226 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 6227 sourceNodeId); 6228 View source = mView.findViewByAccessibilityId(accessibilityViewId); 6229 if (source != null) { 6230 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 6231 if (provider != null) { 6232 final int virtualNodeId = AccessibilityNodeInfo.getVirtualDescendantId( 6233 sourceNodeId); 6234 final AccessibilityNodeInfo node; 6235 if (virtualNodeId == AccessibilityNodeInfo.UNDEFINED_ITEM_ID) { 6236 node = provider.createAccessibilityNodeInfo( 6237 AccessibilityNodeProvider.HOST_VIEW_ID); 6238 } else { 6239 node = provider.createAccessibilityNodeInfo(virtualNodeId); 6240 } 6241 setAccessibilityFocus(source, node); 6242 } 6243 } 6244 } break; 6245 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUS_CLEARED: { 6246 final long sourceNodeId = event.getSourceNodeId(); 6247 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 6248 sourceNodeId); 6249 View source = mView.findViewByAccessibilityId(accessibilityViewId); 6250 if (source != null) { 6251 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 6252 if (provider != null) { 6253 setAccessibilityFocus(null, null); 6254 } 6255 } 6256 } break; 6257 6258 6259 case AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED: { 6260 if (mAccessibilityFocusedHost != null && mAccessibilityFocusedVirtualView != null) { 6261 // We care only for changes rooted in the focused host. 6262 final long eventSourceId = event.getSourceNodeId(); 6263 final int hostViewId = AccessibilityNodeInfo.getAccessibilityViewId( 6264 eventSourceId); 6265 if (hostViewId != mAccessibilityFocusedHost.getAccessibilityViewId()) { 6266 break; 6267 } 6268 6269 // We only care about changes that may change the virtual focused view bounds. 6270 final int changes = event.getContentChangeTypes(); 6271 if ((changes & AccessibilityEvent.CONTENT_CHANGE_TYPE_SUBTREE) != 0 6272 || changes == AccessibilityEvent.CONTENT_CHANGE_TYPE_UNDEFINED) { 6273 AccessibilityNodeProvider provider = mAccessibilityFocusedHost 6274 .getAccessibilityNodeProvider(); 6275 if (provider != null) { 6276 final int virtualChildId = AccessibilityNodeInfo.getVirtualDescendantId( 6277 mAccessibilityFocusedVirtualView.getSourceNodeId()); 6278 if (virtualChildId == AccessibilityNodeInfo.UNDEFINED_ITEM_ID) { 6279 mAccessibilityFocusedVirtualView = provider 6280 .createAccessibilityNodeInfo( 6281 AccessibilityNodeProvider.HOST_VIEW_ID); 6282 } else { 6283 mAccessibilityFocusedVirtualView = provider 6284 .createAccessibilityNodeInfo(virtualChildId); 6285 } 6286 } 6287 } 6288 } 6289 } break; 6290 } 6291 mAccessibilityManager.sendAccessibilityEvent(event); 6292 return true; 6293 } 6294 6295 @Override 6296 public void notifySubtreeAccessibilityStateChanged(View child, View source, int changeType) { 6297 postSendWindowContentChangedCallback(source, changeType); 6298 } 6299 6300 @Override 6301 public boolean canResolveLayoutDirection() { 6302 return true; 6303 } 6304 6305 @Override 6306 public boolean isLayoutDirectionResolved() { 6307 return true; 6308 } 6309 6310 @Override 6311 public int getLayoutDirection() { 6312 return View.LAYOUT_DIRECTION_RESOLVED_DEFAULT; 6313 } 6314 6315 @Override 6316 public boolean canResolveTextDirection() { 6317 return true; 6318 } 6319 6320 @Override 6321 public boolean isTextDirectionResolved() { 6322 return true; 6323 } 6324 6325 @Override 6326 public int getTextDirection() { 6327 return View.TEXT_DIRECTION_RESOLVED_DEFAULT; 6328 } 6329 6330 @Override 6331 public boolean canResolveTextAlignment() { 6332 return true; 6333 } 6334 6335 @Override 6336 public boolean isTextAlignmentResolved() { 6337 return true; 6338 } 6339 6340 @Override 6341 public int getTextAlignment() { 6342 return View.TEXT_ALIGNMENT_RESOLVED_DEFAULT; 6343 } 6344 6345 private View getCommonPredecessor(View first, View second) { 6346 if (mTempHashSet == null) { 6347 mTempHashSet = new HashSet<View>(); 6348 } 6349 HashSet<View> seen = mTempHashSet; 6350 seen.clear(); 6351 View firstCurrent = first; 6352 while (firstCurrent != null) { 6353 seen.add(firstCurrent); 6354 ViewParent firstCurrentParent = firstCurrent.mParent; 6355 if (firstCurrentParent instanceof View) { 6356 firstCurrent = (View) firstCurrentParent; 6357 } else { 6358 firstCurrent = null; 6359 } 6360 } 6361 View secondCurrent = second; 6362 while (secondCurrent != null) { 6363 if (seen.contains(secondCurrent)) { 6364 seen.clear(); 6365 return secondCurrent; 6366 } 6367 ViewParent secondCurrentParent = secondCurrent.mParent; 6368 if (secondCurrentParent instanceof View) { 6369 secondCurrent = (View) secondCurrentParent; 6370 } else { 6371 secondCurrent = null; 6372 } 6373 } 6374 seen.clear(); 6375 return null; 6376 } 6377 6378 void checkThread() { 6379 if (mThread != Thread.currentThread()) { 6380 throw new CalledFromWrongThreadException( 6381 "Only the original thread that created a view hierarchy can touch its views."); 6382 } 6383 } 6384 6385 @Override 6386 public void requestDisallowInterceptTouchEvent(boolean disallowIntercept) { 6387 // ViewAncestor never intercepts touch event, so this can be a no-op 6388 } 6389 6390 @Override 6391 public boolean requestChildRectangleOnScreen(View child, Rect rectangle, boolean immediate) { 6392 final boolean scrolled = scrollToRectOrFocus(rectangle, immediate); 6393 if (rectangle != null) { 6394 mTempRect.set(rectangle); 6395 mTempRect.offset(0, -mCurScrollY); 6396 mTempRect.offset(mAttachInfo.mWindowLeft, mAttachInfo.mWindowTop); 6397 try { 6398 mWindowSession.onRectangleOnScreenRequested(mWindow, mTempRect); 6399 } catch (RemoteException re) { 6400 /* ignore */ 6401 } 6402 } 6403 return scrolled; 6404 } 6405 6406 @Override 6407 public void childHasTransientStateChanged(View child, boolean hasTransientState) { 6408 // Do nothing. 6409 } 6410 6411 @Override 6412 public boolean onStartNestedScroll(View child, View target, int nestedScrollAxes) { 6413 return false; 6414 } 6415 6416 @Override 6417 public void onStopNestedScroll(View target) { 6418 } 6419 6420 @Override 6421 public void onNestedScrollAccepted(View child, View target, int nestedScrollAxes) { 6422 } 6423 6424 @Override 6425 public void onNestedScroll(View target, int dxConsumed, int dyConsumed, 6426 int dxUnconsumed, int dyUnconsumed) { 6427 } 6428 6429 @Override 6430 public void onNestedPreScroll(View target, int dx, int dy, int[] consumed) { 6431 } 6432 6433 @Override 6434 public boolean onNestedFling(View target, float velocityX, float velocityY, boolean consumed) { 6435 return false; 6436 } 6437 6438 @Override 6439 public boolean onNestedPreFling(View target, float velocityX, float velocityY) { 6440 return false; 6441 } 6442 6443 @Override 6444 public boolean onNestedPrePerformAccessibilityAction(View target, int action, Bundle args) { 6445 return false; 6446 } 6447 6448 void changeCanvasOpacity(boolean opaque) { 6449 Log.d(TAG, "changeCanvasOpacity: opaque=" + opaque); 6450 if (mAttachInfo.mHardwareRenderer != null) { 6451 mAttachInfo.mHardwareRenderer.setOpaque(opaque); 6452 } 6453 } 6454 6455 class TakenSurfaceHolder extends BaseSurfaceHolder { 6456 @Override 6457 public boolean onAllowLockCanvas() { 6458 return mDrawingAllowed; 6459 } 6460 6461 @Override 6462 public void onRelayoutContainer() { 6463 // Not currently interesting -- from changing between fixed and layout size. 6464 } 6465 6466 @Override 6467 public void setFormat(int format) { 6468 ((RootViewSurfaceTaker)mView).setSurfaceFormat(format); 6469 } 6470 6471 @Override 6472 public void setType(int type) { 6473 ((RootViewSurfaceTaker)mView).setSurfaceType(type); 6474 } 6475 6476 @Override 6477 public void onUpdateSurface() { 6478 // We take care of format and type changes on our own. 6479 throw new IllegalStateException("Shouldn't be here"); 6480 } 6481 6482 @Override 6483 public boolean isCreating() { 6484 return mIsCreating; 6485 } 6486 6487 @Override 6488 public void setFixedSize(int width, int height) { 6489 throw new UnsupportedOperationException( 6490 "Currently only support sizing from layout"); 6491 } 6492 6493 @Override 6494 public void setKeepScreenOn(boolean screenOn) { 6495 ((RootViewSurfaceTaker)mView).setSurfaceKeepScreenOn(screenOn); 6496 } 6497 } 6498 6499 static class W extends IWindow.Stub { 6500 private final WeakReference<ViewRootImpl> mViewAncestor; 6501 private final IWindowSession mWindowSession; 6502 6503 W(ViewRootImpl viewAncestor) { 6504 mViewAncestor = new WeakReference<ViewRootImpl>(viewAncestor); 6505 mWindowSession = viewAncestor.mWindowSession; 6506 } 6507 6508 @Override 6509 public void resized(Rect frame, Rect overscanInsets, Rect contentInsets, 6510 Rect visibleInsets, Rect stableInsets, boolean reportDraw, 6511 Configuration newConfig) { 6512 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6513 if (viewAncestor != null) { 6514 viewAncestor.dispatchResized(frame, overscanInsets, contentInsets, 6515 visibleInsets, stableInsets, reportDraw, newConfig); 6516 } 6517 } 6518 6519 @Override 6520 public void moved(int newX, int newY) { 6521 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6522 if (viewAncestor != null) { 6523 viewAncestor.dispatchMoved(newX, newY); 6524 } 6525 } 6526 6527 @Override 6528 public void dispatchAppVisibility(boolean visible) { 6529 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6530 if (viewAncestor != null) { 6531 viewAncestor.dispatchAppVisibility(visible); 6532 } 6533 } 6534 6535 @Override 6536 public void dispatchGetNewSurface() { 6537 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6538 if (viewAncestor != null) { 6539 viewAncestor.dispatchGetNewSurface(); 6540 } 6541 } 6542 6543 @Override 6544 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 6545 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6546 if (viewAncestor != null) { 6547 viewAncestor.windowFocusChanged(hasFocus, inTouchMode); 6548 } 6549 } 6550 6551 private static int checkCallingPermission(String permission) { 6552 try { 6553 return ActivityManagerNative.getDefault().checkPermission( 6554 permission, Binder.getCallingPid(), Binder.getCallingUid()); 6555 } catch (RemoteException e) { 6556 return PackageManager.PERMISSION_DENIED; 6557 } 6558 } 6559 6560 @Override 6561 public void executeCommand(String command, String parameters, ParcelFileDescriptor out) { 6562 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6563 if (viewAncestor != null) { 6564 final View view = viewAncestor.mView; 6565 if (view != null) { 6566 if (checkCallingPermission(Manifest.permission.DUMP) != 6567 PackageManager.PERMISSION_GRANTED) { 6568 throw new SecurityException("Insufficient permissions to invoke" 6569 + " executeCommand() from pid=" + Binder.getCallingPid() 6570 + ", uid=" + Binder.getCallingUid()); 6571 } 6572 6573 OutputStream clientStream = null; 6574 try { 6575 clientStream = new ParcelFileDescriptor.AutoCloseOutputStream(out); 6576 ViewDebug.dispatchCommand(view, command, parameters, clientStream); 6577 } catch (IOException e) { 6578 e.printStackTrace(); 6579 } finally { 6580 if (clientStream != null) { 6581 try { 6582 clientStream.close(); 6583 } catch (IOException e) { 6584 e.printStackTrace(); 6585 } 6586 } 6587 } 6588 } 6589 } 6590 } 6591 6592 @Override 6593 public void closeSystemDialogs(String reason) { 6594 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6595 if (viewAncestor != null) { 6596 viewAncestor.dispatchCloseSystemDialogs(reason); 6597 } 6598 } 6599 6600 @Override 6601 public void dispatchWallpaperOffsets(float x, float y, float xStep, float yStep, 6602 boolean sync) { 6603 if (sync) { 6604 try { 6605 mWindowSession.wallpaperOffsetsComplete(asBinder()); 6606 } catch (RemoteException e) { 6607 } 6608 } 6609 } 6610 6611 @Override 6612 public void dispatchWallpaperCommand(String action, int x, int y, 6613 int z, Bundle extras, boolean sync) { 6614 if (sync) { 6615 try { 6616 mWindowSession.wallpaperCommandComplete(asBinder(), null); 6617 } catch (RemoteException e) { 6618 } 6619 } 6620 } 6621 6622 /* Drag/drop */ 6623 @Override 6624 public void dispatchDragEvent(DragEvent event) { 6625 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6626 if (viewAncestor != null) { 6627 viewAncestor.dispatchDragEvent(event); 6628 } 6629 } 6630 6631 @Override 6632 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 6633 int localValue, int localChanges) { 6634 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6635 if (viewAncestor != null) { 6636 viewAncestor.dispatchSystemUiVisibilityChanged(seq, globalVisibility, 6637 localValue, localChanges); 6638 } 6639 } 6640 6641 @Override 6642 public void doneAnimating() { 6643 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6644 if (viewAncestor != null) { 6645 viewAncestor.dispatchDoneAnimating(); 6646 } 6647 } 6648 6649 @Override 6650 public void dispatchWindowShown() { 6651 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6652 if (viewAncestor != null) { 6653 viewAncestor.dispatchWindowShown(); 6654 } 6655 } 6656 } 6657 6658 public static final class CalledFromWrongThreadException extends AndroidRuntimeException { 6659 public CalledFromWrongThreadException(String msg) { 6660 super(msg); 6661 } 6662 } 6663 6664 static RunQueue getRunQueue() { 6665 RunQueue rq = sRunQueues.get(); 6666 if (rq != null) { 6667 return rq; 6668 } 6669 rq = new RunQueue(); 6670 sRunQueues.set(rq); 6671 return rq; 6672 } 6673 6674 /** 6675 * The run queue is used to enqueue pending work from Views when no Handler is 6676 * attached. The work is executed during the next call to performTraversals on 6677 * the thread. 6678 * @hide 6679 */ 6680 static final class RunQueue { 6681 private final ArrayList<HandlerAction> mActions = new ArrayList<HandlerAction>(); 6682 6683 void post(Runnable action) { 6684 postDelayed(action, 0); 6685 } 6686 6687 void postDelayed(Runnable action, long delayMillis) { 6688 HandlerAction handlerAction = new HandlerAction(); 6689 handlerAction.action = action; 6690 handlerAction.delay = delayMillis; 6691 6692 synchronized (mActions) { 6693 mActions.add(handlerAction); 6694 } 6695 } 6696 6697 void removeCallbacks(Runnable action) { 6698 final HandlerAction handlerAction = new HandlerAction(); 6699 handlerAction.action = action; 6700 6701 synchronized (mActions) { 6702 final ArrayList<HandlerAction> actions = mActions; 6703 6704 while (actions.remove(handlerAction)) { 6705 // Keep going 6706 } 6707 } 6708 } 6709 6710 void executeActions(Handler handler) { 6711 synchronized (mActions) { 6712 final ArrayList<HandlerAction> actions = mActions; 6713 final int count = actions.size(); 6714 6715 for (int i = 0; i < count; i++) { 6716 final HandlerAction handlerAction = actions.get(i); 6717 handler.postDelayed(handlerAction.action, handlerAction.delay); 6718 } 6719 6720 actions.clear(); 6721 } 6722 } 6723 6724 private static class HandlerAction { 6725 Runnable action; 6726 long delay; 6727 6728 @Override 6729 public boolean equals(Object o) { 6730 if (this == o) return true; 6731 if (o == null || getClass() != o.getClass()) return false; 6732 6733 HandlerAction that = (HandlerAction) o; 6734 return !(action != null ? !action.equals(that.action) : that.action != null); 6735 6736 } 6737 6738 @Override 6739 public int hashCode() { 6740 int result = action != null ? action.hashCode() : 0; 6741 result = 31 * result + (int) (delay ^ (delay >>> 32)); 6742 return result; 6743 } 6744 } 6745 } 6746 6747 /** 6748 * Class for managing the accessibility interaction connection 6749 * based on the global accessibility state. 6750 */ 6751 final class AccessibilityInteractionConnectionManager 6752 implements AccessibilityStateChangeListener { 6753 @Override 6754 public void onAccessibilityStateChanged(boolean enabled) { 6755 if (enabled) { 6756 ensureConnection(); 6757 if (mAttachInfo.mHasWindowFocus) { 6758 mView.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 6759 View focusedView = mView.findFocus(); 6760 if (focusedView != null && focusedView != mView) { 6761 focusedView.sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_FOCUSED); 6762 } 6763 } 6764 } else { 6765 ensureNoConnection(); 6766 mHandler.obtainMessage(MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST).sendToTarget(); 6767 } 6768 } 6769 6770 public void ensureConnection() { 6771 final boolean registered = 6772 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED_ITEM_ID; 6773 if (!registered) { 6774 mAttachInfo.mAccessibilityWindowId = 6775 mAccessibilityManager.addAccessibilityInteractionConnection(mWindow, 6776 new AccessibilityInteractionConnection(ViewRootImpl.this)); 6777 } 6778 } 6779 6780 public void ensureNoConnection() { 6781 final boolean registered = 6782 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED_ITEM_ID; 6783 if (registered) { 6784 mAttachInfo.mAccessibilityWindowId = AccessibilityNodeInfo.UNDEFINED_ITEM_ID; 6785 mAccessibilityManager.removeAccessibilityInteractionConnection(mWindow); 6786 } 6787 } 6788 } 6789 6790 final class HighContrastTextManager implements HighTextContrastChangeListener { 6791 HighContrastTextManager() { 6792 mAttachInfo.mHighContrastText = mAccessibilityManager.isHighTextContrastEnabled(); 6793 } 6794 @Override 6795 public void onHighTextContrastStateChanged(boolean enabled) { 6796 mAttachInfo.mHighContrastText = enabled; 6797 6798 // Destroy Displaylists so they can be recreated with high contrast recordings 6799 destroyHardwareResources(); 6800 6801 // Schedule redraw, which will rerecord + redraw all text 6802 invalidate(); 6803 } 6804 } 6805 6806 /** 6807 * This class is an interface this ViewAncestor provides to the 6808 * AccessibilityManagerService to the latter can interact with 6809 * the view hierarchy in this ViewAncestor. 6810 */ 6811 static final class AccessibilityInteractionConnection 6812 extends IAccessibilityInteractionConnection.Stub { 6813 private final WeakReference<ViewRootImpl> mViewRootImpl; 6814 6815 AccessibilityInteractionConnection(ViewRootImpl viewRootImpl) { 6816 mViewRootImpl = new WeakReference<ViewRootImpl>(viewRootImpl); 6817 } 6818 6819 @Override 6820 public void findAccessibilityNodeInfoByAccessibilityId(long accessibilityNodeId, 6821 Region interactiveRegion, int interactionId, 6822 IAccessibilityInteractionConnectionCallback callback, int flags, 6823 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6824 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6825 if (viewRootImpl != null && viewRootImpl.mView != null) { 6826 viewRootImpl.getAccessibilityInteractionController() 6827 .findAccessibilityNodeInfoByAccessibilityIdClientThread(accessibilityNodeId, 6828 interactiveRegion, interactionId, callback, flags, interrogatingPid, 6829 interrogatingTid, spec); 6830 } else { 6831 // We cannot make the call and notify the caller so it does not wait. 6832 try { 6833 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 6834 } catch (RemoteException re) { 6835 /* best effort - ignore */ 6836 } 6837 } 6838 } 6839 6840 @Override 6841 public void performAccessibilityAction(long accessibilityNodeId, int action, 6842 Bundle arguments, int interactionId, 6843 IAccessibilityInteractionConnectionCallback callback, int flags, 6844 int interrogatingPid, long interrogatingTid) { 6845 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6846 if (viewRootImpl != null && viewRootImpl.mView != null) { 6847 viewRootImpl.getAccessibilityInteractionController() 6848 .performAccessibilityActionClientThread(accessibilityNodeId, action, arguments, 6849 interactionId, callback, flags, interrogatingPid, interrogatingTid); 6850 } else { 6851 // We cannot make the call and notify the caller so it does not wait. 6852 try { 6853 callback.setPerformAccessibilityActionResult(false, interactionId); 6854 } catch (RemoteException re) { 6855 /* best effort - ignore */ 6856 } 6857 } 6858 } 6859 6860 @Override 6861 public void findAccessibilityNodeInfosByViewId(long accessibilityNodeId, 6862 String viewId, Region interactiveRegion, int interactionId, 6863 IAccessibilityInteractionConnectionCallback callback, int flags, 6864 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6865 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6866 if (viewRootImpl != null && viewRootImpl.mView != null) { 6867 viewRootImpl.getAccessibilityInteractionController() 6868 .findAccessibilityNodeInfosByViewIdClientThread(accessibilityNodeId, 6869 viewId, interactiveRegion, interactionId, callback, flags, 6870 interrogatingPid, interrogatingTid, spec); 6871 } else { 6872 // We cannot make the call and notify the caller so it does not wait. 6873 try { 6874 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6875 } catch (RemoteException re) { 6876 /* best effort - ignore */ 6877 } 6878 } 6879 } 6880 6881 @Override 6882 public void findAccessibilityNodeInfosByText(long accessibilityNodeId, String text, 6883 Region interactiveRegion, int interactionId, 6884 IAccessibilityInteractionConnectionCallback callback, int flags, 6885 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6886 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6887 if (viewRootImpl != null && viewRootImpl.mView != null) { 6888 viewRootImpl.getAccessibilityInteractionController() 6889 .findAccessibilityNodeInfosByTextClientThread(accessibilityNodeId, text, 6890 interactiveRegion, interactionId, callback, flags, interrogatingPid, 6891 interrogatingTid, spec); 6892 } else { 6893 // We cannot make the call and notify the caller so it does not wait. 6894 try { 6895 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 6896 } catch (RemoteException re) { 6897 /* best effort - ignore */ 6898 } 6899 } 6900 } 6901 6902 @Override 6903 public void findFocus(long accessibilityNodeId, int focusType, Region interactiveRegion, 6904 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 6905 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6906 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6907 if (viewRootImpl != null && viewRootImpl.mView != null) { 6908 viewRootImpl.getAccessibilityInteractionController() 6909 .findFocusClientThread(accessibilityNodeId, focusType, interactiveRegion, 6910 interactionId, callback, flags, interrogatingPid, interrogatingTid, 6911 spec); 6912 } else { 6913 // We cannot make the call and notify the caller so it does not wait. 6914 try { 6915 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6916 } catch (RemoteException re) { 6917 /* best effort - ignore */ 6918 } 6919 } 6920 } 6921 6922 @Override 6923 public void focusSearch(long accessibilityNodeId, int direction, Region interactiveRegion, 6924 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 6925 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6926 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6927 if (viewRootImpl != null && viewRootImpl.mView != null) { 6928 viewRootImpl.getAccessibilityInteractionController() 6929 .focusSearchClientThread(accessibilityNodeId, direction, interactiveRegion, 6930 interactionId, callback, flags, interrogatingPid, interrogatingTid, 6931 spec); 6932 } else { 6933 // We cannot make the call and notify the caller so it does not wait. 6934 try { 6935 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6936 } catch (RemoteException re) { 6937 /* best effort - ignore */ 6938 } 6939 } 6940 } 6941 } 6942 6943 private class SendWindowContentChangedAccessibilityEvent implements Runnable { 6944 private int mChangeTypes = 0; 6945 6946 public View mSource; 6947 public long mLastEventTimeMillis; 6948 6949 @Override 6950 public void run() { 6951 // The accessibility may be turned off while we were waiting so check again. 6952 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 6953 mLastEventTimeMillis = SystemClock.uptimeMillis(); 6954 AccessibilityEvent event = AccessibilityEvent.obtain(); 6955 event.setEventType(AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED); 6956 event.setContentChangeTypes(mChangeTypes); 6957 mSource.sendAccessibilityEventUnchecked(event); 6958 } else { 6959 mLastEventTimeMillis = 0; 6960 } 6961 // In any case reset to initial state. 6962 mSource.resetSubtreeAccessibilityStateChanged(); 6963 mSource = null; 6964 mChangeTypes = 0; 6965 } 6966 6967 public void runOrPost(View source, int changeType) { 6968 if (mSource != null) { 6969 // If there is no common predecessor, then mSource points to 6970 // a removed view, hence in this case always prefer the source. 6971 View predecessor = getCommonPredecessor(mSource, source); 6972 mSource = (predecessor != null) ? predecessor : source; 6973 mChangeTypes |= changeType; 6974 return; 6975 } 6976 mSource = source; 6977 mChangeTypes = changeType; 6978 final long timeSinceLastMillis = SystemClock.uptimeMillis() - mLastEventTimeMillis; 6979 final long minEventIntevalMillis = 6980 ViewConfiguration.getSendRecurringAccessibilityEventsInterval(); 6981 if (timeSinceLastMillis >= minEventIntevalMillis) { 6982 mSource.removeCallbacks(this); 6983 run(); 6984 } else { 6985 mSource.postDelayed(this, minEventIntevalMillis - timeSinceLastMillis); 6986 } 6987 } 6988 } 6989} 6990