ViewRootImpl.java revision 2b12b58f942e34e8c0cc5095cca71dbaaa029624
1/* 2 * Copyright (C) 2006 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.view; 18 19import android.Manifest; 20import android.animation.LayoutTransition; 21import android.app.ActivityManagerNative; 22import android.content.ClipDescription; 23import android.content.ComponentCallbacks; 24import android.content.Context; 25import android.content.pm.PackageManager; 26import android.content.res.CompatibilityInfo; 27import android.content.res.Configuration; 28import android.content.res.Resources; 29import android.graphics.Canvas; 30import android.graphics.Matrix; 31import android.graphics.Paint; 32import android.graphics.PixelFormat; 33import android.graphics.Point; 34import android.graphics.PointF; 35import android.graphics.PorterDuff; 36import android.graphics.Rect; 37import android.graphics.Region; 38import android.graphics.drawable.Drawable; 39import android.hardware.display.DisplayManager; 40import android.hardware.display.DisplayManager.DisplayListener; 41import android.media.AudioManager; 42import android.os.Binder; 43import android.os.Build; 44import android.os.Bundle; 45import android.os.Debug; 46import android.os.Handler; 47import android.os.Looper; 48import android.os.Message; 49import android.os.ParcelFileDescriptor; 50import android.os.Process; 51import android.os.RemoteException; 52import android.os.SystemClock; 53import android.os.SystemProperties; 54import android.os.Trace; 55import android.util.AndroidRuntimeException; 56import android.util.DisplayMetrics; 57import android.util.Log; 58import android.util.Slog; 59import android.util.TypedValue; 60import android.view.Surface.OutOfResourcesException; 61import android.view.View.AttachInfo; 62import android.view.View.MeasureSpec; 63import android.view.accessibility.AccessibilityEvent; 64import android.view.accessibility.AccessibilityManager; 65import android.view.accessibility.AccessibilityManager.AccessibilityStateChangeListener; 66import android.view.accessibility.AccessibilityManager.HighTextContrastChangeListener; 67import android.view.accessibility.AccessibilityNodeInfo; 68import android.view.accessibility.AccessibilityNodeProvider; 69import android.view.accessibility.IAccessibilityInteractionConnection; 70import android.view.accessibility.IAccessibilityInteractionConnectionCallback; 71import android.view.animation.AccelerateDecelerateInterpolator; 72import android.view.animation.Interpolator; 73import android.view.inputmethod.InputConnection; 74import android.view.inputmethod.InputMethodManager; 75import android.widget.Scroller; 76 77import com.android.internal.R; 78import com.android.internal.os.SomeArgs; 79import com.android.internal.policy.PolicyManager; 80import com.android.internal.view.BaseSurfaceHolder; 81import com.android.internal.view.RootViewSurfaceTaker; 82 83import java.io.FileDescriptor; 84import java.io.IOException; 85import java.io.OutputStream; 86import java.io.PrintWriter; 87import java.lang.ref.WeakReference; 88import java.util.ArrayList; 89import java.util.HashSet; 90 91/** 92 * The top of a view hierarchy, implementing the needed protocol between View 93 * and the WindowManager. This is for the most part an internal implementation 94 * detail of {@link WindowManagerGlobal}. 95 * 96 * {@hide} 97 */ 98@SuppressWarnings({"EmptyCatchBlock", "PointlessBooleanExpression"}) 99public final class ViewRootImpl implements ViewParent, 100 View.AttachInfo.Callbacks, HardwareRenderer.HardwareDrawCallbacks { 101 private static final String TAG = "ViewRootImpl"; 102 private static final boolean DBG = false; 103 private static final boolean LOCAL_LOGV = false; 104 /** @noinspection PointlessBooleanExpression*/ 105 private static final boolean DEBUG_DRAW = false || LOCAL_LOGV; 106 private static final boolean DEBUG_LAYOUT = false || LOCAL_LOGV; 107 private static final boolean DEBUG_DIALOG = false || LOCAL_LOGV; 108 private static final boolean DEBUG_INPUT_RESIZE = false || LOCAL_LOGV; 109 private static final boolean DEBUG_ORIENTATION = false || LOCAL_LOGV; 110 private static final boolean DEBUG_TRACKBALL = false || LOCAL_LOGV; 111 private static final boolean DEBUG_IMF = false || LOCAL_LOGV; 112 private static final boolean DEBUG_CONFIGURATION = false || LOCAL_LOGV; 113 private static final boolean DEBUG_FPS = false; 114 private static final boolean DEBUG_INPUT_STAGES = false || LOCAL_LOGV; 115 116 /** 117 * Set this system property to true to force the view hierarchy to render 118 * at 60 Hz. This can be used to measure the potential framerate. 119 */ 120 private static final String PROPERTY_PROFILE_RENDERING = "viewroot.profile_rendering"; 121 private static final String PROPERTY_MEDIA_DISABLED = "config.disable_media"; 122 123 // property used by emulator to determine display shape 124 public static final String PROPERTY_EMULATOR_CIRCULAR = "ro.emulator.circular"; 125 126 /** 127 * Maximum time we allow the user to roll the trackball enough to generate 128 * a key event, before resetting the counters. 129 */ 130 static final int MAX_TRACKBALL_DELAY = 250; 131 132 static final ThreadLocal<RunQueue> sRunQueues = new ThreadLocal<RunQueue>(); 133 134 static final ArrayList<Runnable> sFirstDrawHandlers = new ArrayList<Runnable>(); 135 static boolean sFirstDrawComplete = false; 136 137 static final ArrayList<ComponentCallbacks> sConfigCallbacks 138 = new ArrayList<ComponentCallbacks>(); 139 140 final Context mContext; 141 final IWindowSession mWindowSession; 142 final Display mDisplay; 143 final DisplayManager mDisplayManager; 144 final String mBasePackageName; 145 146 final int[] mTmpLocation = new int[2]; 147 148 final TypedValue mTmpValue = new TypedValue(); 149 150 final Thread mThread; 151 152 final WindowLeaked mLocation; 153 154 final WindowManager.LayoutParams mWindowAttributes = new WindowManager.LayoutParams(); 155 156 final W mWindow; 157 158 final int mTargetSdkVersion; 159 160 int mSeq; 161 162 View mView; 163 164 View mAccessibilityFocusedHost; 165 AccessibilityNodeInfo mAccessibilityFocusedVirtualView; 166 167 int mViewVisibility; 168 boolean mAppVisible = true; 169 int mOrigWindowType = -1; 170 171 // Set to true if the owner of this window is in the stopped state, 172 // so the window should no longer be active. 173 boolean mStopped = false; 174 175 boolean mLastInCompatMode = false; 176 177 SurfaceHolder.Callback2 mSurfaceHolderCallback; 178 BaseSurfaceHolder mSurfaceHolder; 179 boolean mIsCreating; 180 boolean mDrawingAllowed; 181 182 final Region mTransparentRegion; 183 final Region mPreviousTransparentRegion; 184 185 int mWidth; 186 int mHeight; 187 Rect mDirty; 188 boolean mIsAnimating; 189 190 CompatibilityInfo.Translator mTranslator; 191 192 final View.AttachInfo mAttachInfo; 193 InputChannel mInputChannel; 194 InputQueue.Callback mInputQueueCallback; 195 InputQueue mInputQueue; 196 FallbackEventHandler mFallbackEventHandler; 197 Choreographer mChoreographer; 198 199 final Rect mTempRect; // used in the transaction to not thrash the heap. 200 final Rect mVisRect; // used to retrieve visible rect of focused view. 201 202 boolean mTraversalScheduled; 203 int mTraversalBarrier; 204 boolean mWillDrawSoon; 205 /** Set to true while in performTraversals for detecting when die(true) is called from internal 206 * callbacks such as onMeasure, onPreDraw, onDraw and deferring doDie() until later. */ 207 boolean mIsInTraversal; 208 boolean mApplyInsetsRequested; 209 boolean mLayoutRequested; 210 boolean mFirst; 211 boolean mReportNextDraw; 212 boolean mFullRedrawNeeded; 213 boolean mNewSurfaceNeeded; 214 boolean mHasHadWindowFocus; 215 boolean mLastWasImTarget; 216 boolean mWindowsAnimating; 217 boolean mDrawDuringWindowsAnimating; 218 boolean mIsDrawing; 219 int mLastSystemUiVisibility; 220 int mClientWindowLayoutFlags; 221 boolean mLastOverscanRequested; 222 223 // Pool of queued input events. 224 private static final int MAX_QUEUED_INPUT_EVENT_POOL_SIZE = 10; 225 private QueuedInputEvent mQueuedInputEventPool; 226 private int mQueuedInputEventPoolSize; 227 228 /* Input event queue. 229 * Pending input events are input events waiting to be delivered to the input stages 230 * and handled by the application. 231 */ 232 QueuedInputEvent mPendingInputEventHead; 233 QueuedInputEvent mPendingInputEventTail; 234 int mPendingInputEventCount; 235 boolean mProcessInputEventsScheduled; 236 boolean mUnbufferedInputDispatch; 237 String mPendingInputEventQueueLengthCounterName = "pq"; 238 239 InputStage mFirstInputStage; 240 InputStage mFirstPostImeInputStage; 241 InputStage mSyntheticInputStage; 242 243 boolean mWindowAttributesChanged = false; 244 int mWindowAttributesChangesFlag = 0; 245 246 // These can be accessed by any thread, must be protected with a lock. 247 // Surface can never be reassigned or cleared (use Surface.clear()). 248 private final Surface mSurface = new Surface(); 249 250 boolean mAdded; 251 boolean mAddedTouchMode; 252 253 final DisplayAdjustments mDisplayAdjustments; 254 255 // These are accessed by multiple threads. 256 final Rect mWinFrame; // frame given by window manager. 257 258 final Rect mPendingOverscanInsets = new Rect(); 259 final Rect mPendingVisibleInsets = new Rect(); 260 final Rect mPendingStableInsets = new Rect(); 261 final Rect mPendingContentInsets = new Rect(); 262 final ViewTreeObserver.InternalInsetsInfo mLastGivenInsets 263 = new ViewTreeObserver.InternalInsetsInfo(); 264 265 final Rect mDispatchContentInsets = new Rect(); 266 final Rect mDispatchStableInsets = new Rect(); 267 268 final Configuration mLastConfiguration = new Configuration(); 269 final Configuration mPendingConfiguration = new Configuration(); 270 271 boolean mScrollMayChange; 272 int mSoftInputMode; 273 WeakReference<View> mLastScrolledFocus; 274 int mScrollY; 275 int mCurScrollY; 276 Scroller mScroller; 277 HardwareLayer mResizeBuffer; 278 long mResizeBufferStartTime; 279 int mResizeBufferDuration; 280 // Used to block the creation of the ResizeBuffer due to invalidations in 281 // the previous DisplayList tree that must prevent re-execution. 282 // Currently this means a functor was detached. 283 boolean mBlockResizeBuffer; 284 static final Interpolator mResizeInterpolator = new AccelerateDecelerateInterpolator(); 285 private ArrayList<LayoutTransition> mPendingTransitions; 286 287 final ViewConfiguration mViewConfiguration; 288 289 /* Drag/drop */ 290 ClipDescription mDragDescription; 291 View mCurrentDragView; 292 volatile Object mLocalDragState; 293 final PointF mDragPoint = new PointF(); 294 final PointF mLastTouchPoint = new PointF(); 295 296 private boolean mProfileRendering; 297 private Choreographer.FrameCallback mRenderProfiler; 298 private boolean mRenderProfilingEnabled; 299 300 private boolean mMediaDisabled; 301 302 // Variables to track frames per second, enabled via DEBUG_FPS flag 303 private long mFpsStartTime = -1; 304 private long mFpsPrevTime = -1; 305 private int mFpsNumFrames; 306 307 /** 308 * see {@link #playSoundEffect(int)} 309 */ 310 AudioManager mAudioManager; 311 312 final AccessibilityManager mAccessibilityManager; 313 314 AccessibilityInteractionController mAccessibilityInteractionController; 315 316 AccessibilityInteractionConnectionManager mAccessibilityInteractionConnectionManager; 317 HighContrastTextManager mHighContrastTextManager; 318 319 SendWindowContentChangedAccessibilityEvent mSendWindowContentChangedAccessibilityEvent; 320 321 HashSet<View> mTempHashSet; 322 323 private final int mDensity; 324 private final int mNoncompatDensity; 325 326 private boolean mInLayout = false; 327 ArrayList<View> mLayoutRequesters = new ArrayList<View>(); 328 boolean mHandlingLayoutInLayoutRequest = false; 329 330 private int mViewLayoutDirectionInitial; 331 332 /** Set to true once doDie() has been called. */ 333 private boolean mRemoved; 334 335 private boolean mIsEmulator; 336 private boolean mIsCircularEmulator; 337 private final boolean mWindowIsRound; 338 339 /** 340 * Consistency verifier for debugging purposes. 341 */ 342 protected final InputEventConsistencyVerifier mInputEventConsistencyVerifier = 343 InputEventConsistencyVerifier.isInstrumentationEnabled() ? 344 new InputEventConsistencyVerifier(this, 0) : null; 345 346 static final class SystemUiVisibilityInfo { 347 int seq; 348 int globalVisibility; 349 int localValue; 350 int localChanges; 351 } 352 353 public ViewRootImpl(Context context, Display display) { 354 mContext = context; 355 mWindowSession = WindowManagerGlobal.getWindowSession(); 356 mDisplay = display; 357 mBasePackageName = context.getBasePackageName(); 358 359 mDisplayAdjustments = display.getDisplayAdjustments(); 360 361 mThread = Thread.currentThread(); 362 mLocation = new WindowLeaked(null); 363 mLocation.fillInStackTrace(); 364 mWidth = -1; 365 mHeight = -1; 366 mDirty = new Rect(); 367 mTempRect = new Rect(); 368 mVisRect = new Rect(); 369 mWinFrame = new Rect(); 370 mWindow = new W(this); 371 mTargetSdkVersion = context.getApplicationInfo().targetSdkVersion; 372 mViewVisibility = View.GONE; 373 mTransparentRegion = new Region(); 374 mPreviousTransparentRegion = new Region(); 375 mFirst = true; // true for the first time the view is added 376 mAdded = false; 377 mAttachInfo = new View.AttachInfo(mWindowSession, mWindow, display, this, mHandler, this); 378 mAccessibilityManager = AccessibilityManager.getInstance(context); 379 mAccessibilityInteractionConnectionManager = 380 new AccessibilityInteractionConnectionManager(); 381 mAccessibilityManager.addAccessibilityStateChangeListener( 382 mAccessibilityInteractionConnectionManager); 383 mHighContrastTextManager = new HighContrastTextManager(); 384 mAccessibilityManager.addHighTextContrastStateChangeListener( 385 mHighContrastTextManager); 386 mViewConfiguration = ViewConfiguration.get(context); 387 mDensity = context.getResources().getDisplayMetrics().densityDpi; 388 mNoncompatDensity = context.getResources().getDisplayMetrics().noncompatDensityDpi; 389 mFallbackEventHandler = PolicyManager.makeNewFallbackEventHandler(context); 390 mChoreographer = Choreographer.getInstance(); 391 mDisplayManager = (DisplayManager)context.getSystemService(Context.DISPLAY_SERVICE); 392 loadSystemProperties(); 393 mWindowIsRound = context.getResources().getBoolean( 394 com.android.internal.R.bool.config_windowIsRound); 395 } 396 397 public static void addFirstDrawHandler(Runnable callback) { 398 synchronized (sFirstDrawHandlers) { 399 if (!sFirstDrawComplete) { 400 sFirstDrawHandlers.add(callback); 401 } 402 } 403 } 404 405 public static void addConfigCallback(ComponentCallbacks callback) { 406 synchronized (sConfigCallbacks) { 407 sConfigCallbacks.add(callback); 408 } 409 } 410 411 // FIXME for perf testing only 412 private boolean mProfile = false; 413 414 /** 415 * Call this to profile the next traversal call. 416 * FIXME for perf testing only. Remove eventually 417 */ 418 public void profile() { 419 mProfile = true; 420 } 421 422 /** 423 * Indicates whether we are in touch mode. Calling this method triggers an IPC 424 * call and should be avoided whenever possible. 425 * 426 * @return True, if the device is in touch mode, false otherwise. 427 * 428 * @hide 429 */ 430 static boolean isInTouchMode() { 431 IWindowSession windowSession = WindowManagerGlobal.peekWindowSession(); 432 if (windowSession != null) { 433 try { 434 return windowSession.getInTouchMode(); 435 } catch (RemoteException e) { 436 } 437 } 438 return false; 439 } 440 441 /** 442 * We have one child 443 */ 444 public void setView(View view, WindowManager.LayoutParams attrs, View panelParentView) { 445 synchronized (this) { 446 if (mView == null) { 447 mView = view; 448 449 mAttachInfo.mDisplayState = mDisplay.getState(); 450 mDisplayManager.registerDisplayListener(mDisplayListener, mHandler); 451 452 mViewLayoutDirectionInitial = mView.getRawLayoutDirection(); 453 mFallbackEventHandler.setView(view); 454 mWindowAttributes.copyFrom(attrs); 455 if (mWindowAttributes.packageName == null) { 456 mWindowAttributes.packageName = mBasePackageName; 457 } 458 attrs = mWindowAttributes; 459 // Keep track of the actual window flags supplied by the client. 460 mClientWindowLayoutFlags = attrs.flags; 461 462 setAccessibilityFocus(null, null); 463 464 if (view instanceof RootViewSurfaceTaker) { 465 mSurfaceHolderCallback = 466 ((RootViewSurfaceTaker)view).willYouTakeTheSurface(); 467 if (mSurfaceHolderCallback != null) { 468 mSurfaceHolder = new TakenSurfaceHolder(); 469 mSurfaceHolder.setFormat(PixelFormat.UNKNOWN); 470 } 471 } 472 473 // Compute surface insets required to draw at specified Z value. 474 // TODO: Use real shadow insets for a constant max Z. 475 final int surfaceInset = (int) Math.ceil(view.getZ() * 2); 476 attrs.surfaceInsets.set(surfaceInset, surfaceInset, surfaceInset, surfaceInset); 477 478 CompatibilityInfo compatibilityInfo = mDisplayAdjustments.getCompatibilityInfo(); 479 mTranslator = compatibilityInfo.getTranslator(); 480 mDisplayAdjustments.setActivityToken(attrs.token); 481 482 // If the application owns the surface, don't enable hardware acceleration 483 if (mSurfaceHolder == null) { 484 enableHardwareAcceleration(attrs); 485 } 486 487 boolean restore = false; 488 if (mTranslator != null) { 489 mSurface.setCompatibilityTranslator(mTranslator); 490 restore = true; 491 attrs.backup(); 492 mTranslator.translateWindowLayout(attrs); 493 } 494 if (DEBUG_LAYOUT) Log.d(TAG, "WindowLayout in setView:" + attrs); 495 496 if (!compatibilityInfo.supportsScreen()) { 497 attrs.privateFlags |= WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 498 mLastInCompatMode = true; 499 } 500 501 mSoftInputMode = attrs.softInputMode; 502 mWindowAttributesChanged = true; 503 mWindowAttributesChangesFlag = WindowManager.LayoutParams.EVERYTHING_CHANGED; 504 mAttachInfo.mRootView = view; 505 mAttachInfo.mScalingRequired = mTranslator != null; 506 mAttachInfo.mApplicationScale = 507 mTranslator == null ? 1.0f : mTranslator.applicationScale; 508 if (panelParentView != null) { 509 mAttachInfo.mPanelParentWindowToken 510 = panelParentView.getApplicationWindowToken(); 511 } 512 mAdded = true; 513 int res; /* = WindowManagerImpl.ADD_OKAY; */ 514 515 // Schedule the first layout -before- adding to the window 516 // manager, to make sure we do the relayout before receiving 517 // any other events from the system. 518 requestLayout(); 519 if ((mWindowAttributes.inputFeatures 520 & WindowManager.LayoutParams.INPUT_FEATURE_NO_INPUT_CHANNEL) == 0) { 521 mInputChannel = new InputChannel(); 522 } 523 try { 524 mOrigWindowType = mWindowAttributes.type; 525 mAttachInfo.mRecomputeGlobalAttributes = true; 526 collectViewAttributes(); 527 res = mWindowSession.addToDisplay(mWindow, mSeq, mWindowAttributes, 528 getHostVisibility(), mDisplay.getDisplayId(), 529 mAttachInfo.mContentInsets, mInputChannel); 530 } catch (RemoteException e) { 531 mAdded = false; 532 mView = null; 533 mAttachInfo.mRootView = null; 534 mInputChannel = null; 535 mFallbackEventHandler.setView(null); 536 unscheduleTraversals(); 537 setAccessibilityFocus(null, null); 538 throw new RuntimeException("Adding window failed", e); 539 } finally { 540 if (restore) { 541 attrs.restore(); 542 } 543 } 544 545 if (mTranslator != null) { 546 mTranslator.translateRectInScreenToAppWindow(mAttachInfo.mContentInsets); 547 } 548 mPendingOverscanInsets.set(0, 0, 0, 0); 549 mPendingContentInsets.set(mAttachInfo.mContentInsets); 550 mPendingStableInsets.set(mAttachInfo.mStableInsets); 551 mPendingVisibleInsets.set(0, 0, 0, 0); 552 if (DEBUG_LAYOUT) Log.v(TAG, "Added window " + mWindow); 553 if (res < WindowManagerGlobal.ADD_OKAY) { 554 mAttachInfo.mRootView = null; 555 mAdded = false; 556 mFallbackEventHandler.setView(null); 557 unscheduleTraversals(); 558 setAccessibilityFocus(null, null); 559 switch (res) { 560 case WindowManagerGlobal.ADD_BAD_APP_TOKEN: 561 case WindowManagerGlobal.ADD_BAD_SUBWINDOW_TOKEN: 562 throw new WindowManager.BadTokenException( 563 "Unable to add window -- token " + attrs.token 564 + " is not valid; is your activity running?"); 565 case WindowManagerGlobal.ADD_NOT_APP_TOKEN: 566 throw new WindowManager.BadTokenException( 567 "Unable to add window -- token " + attrs.token 568 + " is not for an application"); 569 case WindowManagerGlobal.ADD_APP_EXITING: 570 throw new WindowManager.BadTokenException( 571 "Unable to add window -- app for token " + attrs.token 572 + " is exiting"); 573 case WindowManagerGlobal.ADD_DUPLICATE_ADD: 574 throw new WindowManager.BadTokenException( 575 "Unable to add window -- window " + mWindow 576 + " has already been added"); 577 case WindowManagerGlobal.ADD_STARTING_NOT_NEEDED: 578 // Silently ignore -- we would have just removed it 579 // right away, anyway. 580 return; 581 case WindowManagerGlobal.ADD_MULTIPLE_SINGLETON: 582 throw new WindowManager.BadTokenException( 583 "Unable to add window " + mWindow + 584 " -- another window of this type already exists"); 585 case WindowManagerGlobal.ADD_PERMISSION_DENIED: 586 throw new WindowManager.BadTokenException( 587 "Unable to add window " + mWindow + 588 " -- permission denied for this window type"); 589 case WindowManagerGlobal.ADD_INVALID_DISPLAY: 590 throw new WindowManager.InvalidDisplayException( 591 "Unable to add window " + mWindow + 592 " -- the specified display can not be found"); 593 } 594 throw new RuntimeException( 595 "Unable to add window -- unknown error code " + res); 596 } 597 598 if (view instanceof RootViewSurfaceTaker) { 599 mInputQueueCallback = 600 ((RootViewSurfaceTaker)view).willYouTakeTheInputQueue(); 601 } 602 if (mInputChannel != null) { 603 if (mInputQueueCallback != null) { 604 mInputQueue = new InputQueue(); 605 mInputQueueCallback.onInputQueueCreated(mInputQueue); 606 } 607 mInputEventReceiver = new WindowInputEventReceiver(mInputChannel, 608 Looper.myLooper()); 609 } 610 611 view.assignParent(this); 612 mAddedTouchMode = (res & WindowManagerGlobal.ADD_FLAG_IN_TOUCH_MODE) != 0; 613 mAppVisible = (res & WindowManagerGlobal.ADD_FLAG_APP_VISIBLE) != 0; 614 615 if (mAccessibilityManager.isEnabled()) { 616 mAccessibilityInteractionConnectionManager.ensureConnection(); 617 } 618 619 if (view.getImportantForAccessibility() == View.IMPORTANT_FOR_ACCESSIBILITY_AUTO) { 620 view.setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_YES); 621 } 622 623 // Set up the input pipeline. 624 CharSequence counterSuffix = attrs.getTitle(); 625 mSyntheticInputStage = new SyntheticInputStage(); 626 InputStage viewPostImeStage = new ViewPostImeInputStage(mSyntheticInputStage); 627 InputStage nativePostImeStage = new NativePostImeInputStage(viewPostImeStage, 628 "aq:native-post-ime:" + counterSuffix); 629 InputStage earlyPostImeStage = new EarlyPostImeInputStage(nativePostImeStage); 630 InputStage imeStage = new ImeInputStage(earlyPostImeStage, 631 "aq:ime:" + counterSuffix); 632 InputStage viewPreImeStage = new ViewPreImeInputStage(imeStage); 633 InputStage nativePreImeStage = new NativePreImeInputStage(viewPreImeStage, 634 "aq:native-pre-ime:" + counterSuffix); 635 636 mFirstInputStage = nativePreImeStage; 637 mFirstPostImeInputStage = earlyPostImeStage; 638 mPendingInputEventQueueLengthCounterName = "aq:pending:" + counterSuffix; 639 } 640 } 641 } 642 643 /** Whether the window is in local focus mode or not */ 644 private boolean isInLocalFocusMode() { 645 return (mWindowAttributes.flags & WindowManager.LayoutParams.FLAG_LOCAL_FOCUS_MODE) != 0; 646 } 647 648 void destroyHardwareResources() { 649 if (mAttachInfo.mHardwareRenderer != null) { 650 mAttachInfo.mHardwareRenderer.destroyHardwareResources(mView); 651 mAttachInfo.mHardwareRenderer.destroy(); 652 } 653 } 654 655 public void detachFunctor(long functor) { 656 // TODO: Make the resize buffer some other way to not need this block 657 mBlockResizeBuffer = true; 658 if (mAttachInfo.mHardwareRenderer != null) { 659 // Fence so that any pending invokeFunctor() messages will be processed 660 // before we return from detachFunctor. 661 mAttachInfo.mHardwareRenderer.stopDrawing(); 662 } 663 } 664 665 /** 666 * Schedules the functor for execution in either kModeProcess or 667 * kModeProcessNoContext, depending on whether or not there is an EGLContext. 668 * 669 * @param functor The native functor to invoke 670 * @param waitForCompletion If true, this will not return until the functor 671 * has invoked. If false, the functor may be invoked 672 * asynchronously. 673 */ 674 public void invokeFunctor(long functor, boolean waitForCompletion) { 675 ThreadedRenderer.invokeFunctor(functor, waitForCompletion); 676 } 677 678 public void registerAnimatingRenderNode(RenderNode animator) { 679 if (mAttachInfo.mHardwareRenderer != null) { 680 mAttachInfo.mHardwareRenderer.registerAnimatingRenderNode(animator); 681 } else { 682 if (mAttachInfo.mPendingAnimatingRenderNodes == null) { 683 mAttachInfo.mPendingAnimatingRenderNodes = new ArrayList<RenderNode>(); 684 } 685 mAttachInfo.mPendingAnimatingRenderNodes.add(animator); 686 } 687 } 688 689 private void enableHardwareAcceleration(WindowManager.LayoutParams attrs) { 690 mAttachInfo.mHardwareAccelerated = false; 691 mAttachInfo.mHardwareAccelerationRequested = false; 692 693 // Don't enable hardware acceleration when the application is in compatibility mode 694 if (mTranslator != null) return; 695 696 // Try to enable hardware acceleration if requested 697 final boolean hardwareAccelerated = 698 (attrs.flags & WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED) != 0; 699 700 if (hardwareAccelerated) { 701 if (!HardwareRenderer.isAvailable()) { 702 return; 703 } 704 705 // Persistent processes (including the system) should not do 706 // accelerated rendering on low-end devices. In that case, 707 // sRendererDisabled will be set. In addition, the system process 708 // itself should never do accelerated rendering. In that case, both 709 // sRendererDisabled and sSystemRendererDisabled are set. When 710 // sSystemRendererDisabled is set, PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED 711 // can be used by code on the system process to escape that and enable 712 // HW accelerated drawing. (This is basically for the lock screen.) 713 714 final boolean fakeHwAccelerated = (attrs.privateFlags & 715 WindowManager.LayoutParams.PRIVATE_FLAG_FAKE_HARDWARE_ACCELERATED) != 0; 716 final boolean forceHwAccelerated = (attrs.privateFlags & 717 WindowManager.LayoutParams.PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED) != 0; 718 719 if (fakeHwAccelerated) { 720 // This is exclusively for the preview windows the window manager 721 // shows for launching applications, so they will look more like 722 // the app being launched. 723 mAttachInfo.mHardwareAccelerationRequested = true; 724 } else if (!HardwareRenderer.sRendererDisabled 725 || (HardwareRenderer.sSystemRendererDisabled && forceHwAccelerated)) { 726 if (mAttachInfo.mHardwareRenderer != null) { 727 mAttachInfo.mHardwareRenderer.destroy(); 728 } 729 730 final Rect insets = attrs.surfaceInsets; 731 final boolean hasSurfaceInsets = insets.left == 0 || insets.right == 0 732 || insets.top == 0 || insets.bottom == 0; 733 final boolean translucent = attrs.format != PixelFormat.OPAQUE || hasSurfaceInsets; 734 mAttachInfo.mHardwareRenderer = HardwareRenderer.create(mContext, translucent); 735 if (mAttachInfo.mHardwareRenderer != null) { 736 mAttachInfo.mHardwareRenderer.setName(attrs.getTitle().toString()); 737 mAttachInfo.mHardwareAccelerated = 738 mAttachInfo.mHardwareAccelerationRequested = true; 739 } 740 } 741 } 742 } 743 744 public View getView() { 745 return mView; 746 } 747 748 final WindowLeaked getLocation() { 749 return mLocation; 750 } 751 752 void setLayoutParams(WindowManager.LayoutParams attrs, boolean newView) { 753 synchronized (this) { 754 final int oldInsetLeft = mWindowAttributes.surfaceInsets.left; 755 final int oldInsetTop = mWindowAttributes.surfaceInsets.top; 756 final int oldInsetRight = mWindowAttributes.surfaceInsets.right; 757 final int oldInsetBottom = mWindowAttributes.surfaceInsets.bottom; 758 final int oldSoftInputMode = mWindowAttributes.softInputMode; 759 760 // Keep track of the actual window flags supplied by the client. 761 mClientWindowLayoutFlags = attrs.flags; 762 763 // Preserve compatible window flag if exists. 764 final int compatibleWindowFlag = mWindowAttributes.privateFlags 765 & WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 766 767 // Transfer over system UI visibility values as they carry current state. 768 attrs.systemUiVisibility = mWindowAttributes.systemUiVisibility; 769 attrs.subtreeSystemUiVisibility = mWindowAttributes.subtreeSystemUiVisibility; 770 771 mWindowAttributesChangesFlag = mWindowAttributes.copyFrom(attrs); 772 if ((mWindowAttributesChangesFlag 773 & WindowManager.LayoutParams.TRANSLUCENT_FLAGS_CHANGED) != 0) { 774 // Recompute system ui visibility. 775 mAttachInfo.mRecomputeGlobalAttributes = true; 776 } 777 if (mWindowAttributes.packageName == null) { 778 mWindowAttributes.packageName = mBasePackageName; 779 } 780 mWindowAttributes.privateFlags |= compatibleWindowFlag; 781 782 // Restore old surface insets. 783 mWindowAttributes.surfaceInsets.set( 784 oldInsetLeft, oldInsetTop, oldInsetRight, oldInsetBottom); 785 786 applyKeepScreenOnFlag(mWindowAttributes); 787 788 if (newView) { 789 mSoftInputMode = attrs.softInputMode; 790 requestLayout(); 791 } 792 793 // Don't lose the mode we last auto-computed. 794 if ((attrs.softInputMode & WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 795 == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 796 mWindowAttributes.softInputMode = (mWindowAttributes.softInputMode 797 & ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 798 | (oldSoftInputMode & WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST); 799 } 800 801 mWindowAttributesChanged = true; 802 scheduleTraversals(); 803 } 804 } 805 806 void handleAppVisibility(boolean visible) { 807 if (mAppVisible != visible) { 808 mAppVisible = visible; 809 scheduleTraversals(); 810 if (!mAppVisible) { 811 WindowManagerGlobal.trimForeground(); 812 } 813 } 814 } 815 816 void handleGetNewSurface() { 817 mNewSurfaceNeeded = true; 818 mFullRedrawNeeded = true; 819 scheduleTraversals(); 820 } 821 822 private final DisplayListener mDisplayListener = new DisplayListener() { 823 @Override 824 public void onDisplayChanged(int displayId) { 825 if (mView != null && mDisplay.getDisplayId() == displayId) { 826 final int oldDisplayState = mAttachInfo.mDisplayState; 827 final int newDisplayState = mDisplay.getState(); 828 if (oldDisplayState != newDisplayState) { 829 mAttachInfo.mDisplayState = newDisplayState; 830 if (oldDisplayState != Display.STATE_UNKNOWN) { 831 final int oldScreenState = toViewScreenState(oldDisplayState); 832 final int newScreenState = toViewScreenState(newDisplayState); 833 if (oldScreenState != newScreenState) { 834 mView.dispatchScreenStateChanged(newScreenState); 835 } 836 if (oldDisplayState == Display.STATE_OFF) { 837 // Draw was suppressed so we need to for it to happen here. 838 mFullRedrawNeeded = true; 839 scheduleTraversals(); 840 } 841 } 842 } 843 } 844 } 845 846 @Override 847 public void onDisplayRemoved(int displayId) { 848 } 849 850 @Override 851 public void onDisplayAdded(int displayId) { 852 } 853 854 private int toViewScreenState(int displayState) { 855 return displayState == Display.STATE_OFF ? 856 View.SCREEN_STATE_OFF : View.SCREEN_STATE_ON; 857 } 858 }; 859 860 @Override 861 public void requestFitSystemWindows() { 862 checkThread(); 863 mApplyInsetsRequested = true; 864 scheduleTraversals(); 865 } 866 867 @Override 868 public void requestLayout() { 869 if (!mHandlingLayoutInLayoutRequest) { 870 checkThread(); 871 mLayoutRequested = true; 872 scheduleTraversals(); 873 } 874 } 875 876 @Override 877 public boolean isLayoutRequested() { 878 return mLayoutRequested; 879 } 880 881 void invalidate() { 882 mDirty.set(0, 0, mWidth, mHeight); 883 if (!mWillDrawSoon) { 884 scheduleTraversals(); 885 } 886 } 887 888 void invalidateWorld(View view) { 889 view.invalidate(); 890 if (view instanceof ViewGroup) { 891 ViewGroup parent = (ViewGroup) view; 892 for (int i = 0; i < parent.getChildCount(); i++) { 893 invalidateWorld(parent.getChildAt(i)); 894 } 895 } 896 } 897 898 @Override 899 public void invalidateChild(View child, Rect dirty) { 900 invalidateChildInParent(null, dirty); 901 } 902 903 @Override 904 public ViewParent invalidateChildInParent(int[] location, Rect dirty) { 905 checkThread(); 906 if (DEBUG_DRAW) Log.v(TAG, "Invalidate child: " + dirty); 907 908 if (dirty == null) { 909 invalidate(); 910 return null; 911 } else if (dirty.isEmpty() && !mIsAnimating) { 912 return null; 913 } 914 915 if (mCurScrollY != 0 || mTranslator != null) { 916 mTempRect.set(dirty); 917 dirty = mTempRect; 918 if (mCurScrollY != 0) { 919 dirty.offset(0, -mCurScrollY); 920 } 921 if (mTranslator != null) { 922 mTranslator.translateRectInAppWindowToScreen(dirty); 923 } 924 if (mAttachInfo.mScalingRequired) { 925 dirty.inset(-1, -1); 926 } 927 } 928 929 final Rect localDirty = mDirty; 930 if (!localDirty.isEmpty() && !localDirty.contains(dirty)) { 931 mAttachInfo.mSetIgnoreDirtyState = true; 932 mAttachInfo.mIgnoreDirtyState = true; 933 } 934 935 // Add the new dirty rect to the current one 936 localDirty.union(dirty.left, dirty.top, dirty.right, dirty.bottom); 937 // Intersect with the bounds of the window to skip 938 // updates that lie outside of the visible region 939 final float appScale = mAttachInfo.mApplicationScale; 940 final boolean intersected = localDirty.intersect(0, 0, 941 (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 942 if (!intersected) { 943 localDirty.setEmpty(); 944 } 945 if (!mWillDrawSoon && (intersected || mIsAnimating)) { 946 scheduleTraversals(); 947 } 948 949 return null; 950 } 951 952 void setStopped(boolean stopped) { 953 if (mStopped != stopped) { 954 mStopped = stopped; 955 if (!stopped) { 956 scheduleTraversals(); 957 } 958 } 959 } 960 961 @Override 962 public ViewParent getParent() { 963 return null; 964 } 965 966 @Override 967 public boolean getChildVisibleRect(View child, Rect r, android.graphics.Point offset) { 968 if (child != mView) { 969 throw new RuntimeException("child is not mine, honest!"); 970 } 971 // Note: don't apply scroll offset, because we want to know its 972 // visibility in the virtual canvas being given to the view hierarchy. 973 return r.intersect(0, 0, mWidth, mHeight); 974 } 975 976 @Override 977 public void bringChildToFront(View child) { 978 } 979 980 int getHostVisibility() { 981 return mAppVisible ? mView.getVisibility() : View.GONE; 982 } 983 984 void disposeResizeBuffer() { 985 if (mResizeBuffer != null) { 986 mResizeBuffer.destroy(); 987 mResizeBuffer = null; 988 } 989 } 990 991 /** 992 * Add LayoutTransition to the list of transitions to be started in the next traversal. 993 * This list will be cleared after the transitions on the list are start()'ed. These 994 * transitionsa re added by LayoutTransition itself when it sets up animations. The setup 995 * happens during the layout phase of traversal, which we want to complete before any of the 996 * animations are started (because those animations may side-effect properties that layout 997 * depends upon, like the bounding rectangles of the affected views). So we add the transition 998 * to the list and it is started just prior to starting the drawing phase of traversal. 999 * 1000 * @param transition The LayoutTransition to be started on the next traversal. 1001 * 1002 * @hide 1003 */ 1004 public void requestTransitionStart(LayoutTransition transition) { 1005 if (mPendingTransitions == null || !mPendingTransitions.contains(transition)) { 1006 if (mPendingTransitions == null) { 1007 mPendingTransitions = new ArrayList<LayoutTransition>(); 1008 } 1009 mPendingTransitions.add(transition); 1010 } 1011 } 1012 1013 /** 1014 * Notifies the HardwareRenderer that a new frame will be coming soon. 1015 * Currently only {@link ThreadedRenderer} cares about this, and uses 1016 * this knowledge to adjust the scheduling of off-thread animations 1017 */ 1018 void notifyRendererOfFramePending() { 1019 if (mAttachInfo.mHardwareRenderer != null) { 1020 mAttachInfo.mHardwareRenderer.notifyFramePending(); 1021 } 1022 } 1023 1024 void scheduleTraversals() { 1025 if (!mTraversalScheduled) { 1026 mTraversalScheduled = true; 1027 mTraversalBarrier = mHandler.getLooper().postSyncBarrier(); 1028 mChoreographer.postCallback( 1029 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 1030 if (!mUnbufferedInputDispatch) { 1031 scheduleConsumeBatchedInput(); 1032 } 1033 notifyRendererOfFramePending(); 1034 } 1035 } 1036 1037 void unscheduleTraversals() { 1038 if (mTraversalScheduled) { 1039 mTraversalScheduled = false; 1040 mHandler.getLooper().removeSyncBarrier(mTraversalBarrier); 1041 mChoreographer.removeCallbacks( 1042 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 1043 } 1044 } 1045 1046 void doTraversal() { 1047 if (mTraversalScheduled) { 1048 mTraversalScheduled = false; 1049 mHandler.getLooper().removeSyncBarrier(mTraversalBarrier); 1050 1051 if (mProfile) { 1052 Debug.startMethodTracing("ViewAncestor"); 1053 } 1054 1055 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "performTraversals"); 1056 try { 1057 performTraversals(); 1058 } finally { 1059 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 1060 } 1061 1062 if (mProfile) { 1063 Debug.stopMethodTracing(); 1064 mProfile = false; 1065 } 1066 } 1067 } 1068 1069 private void applyKeepScreenOnFlag(WindowManager.LayoutParams params) { 1070 // Update window's global keep screen on flag: if a view has requested 1071 // that the screen be kept on, then it is always set; otherwise, it is 1072 // set to whatever the client last requested for the global state. 1073 if (mAttachInfo.mKeepScreenOn) { 1074 params.flags |= WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON; 1075 } else { 1076 params.flags = (params.flags&~WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON) 1077 | (mClientWindowLayoutFlags&WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 1078 } 1079 } 1080 1081 private boolean collectViewAttributes() { 1082 if (mAttachInfo.mRecomputeGlobalAttributes) { 1083 //Log.i(TAG, "Computing view hierarchy attributes!"); 1084 mAttachInfo.mRecomputeGlobalAttributes = false; 1085 boolean oldScreenOn = mAttachInfo.mKeepScreenOn; 1086 mAttachInfo.mKeepScreenOn = false; 1087 mAttachInfo.mSystemUiVisibility = 0; 1088 mAttachInfo.mHasSystemUiListeners = false; 1089 mView.dispatchCollectViewAttributes(mAttachInfo, 0); 1090 mAttachInfo.mSystemUiVisibility &= ~mAttachInfo.mDisabledSystemUiVisibility; 1091 WindowManager.LayoutParams params = mWindowAttributes; 1092 mAttachInfo.mSystemUiVisibility |= getImpliedSystemUiVisibility(params); 1093 if (mAttachInfo.mKeepScreenOn != oldScreenOn 1094 || mAttachInfo.mSystemUiVisibility != params.subtreeSystemUiVisibility 1095 || mAttachInfo.mHasSystemUiListeners != params.hasSystemUiListeners) { 1096 applyKeepScreenOnFlag(params); 1097 params.subtreeSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1098 params.hasSystemUiListeners = mAttachInfo.mHasSystemUiListeners; 1099 mView.dispatchWindowSystemUiVisiblityChanged(mAttachInfo.mSystemUiVisibility); 1100 return true; 1101 } 1102 } 1103 return false; 1104 } 1105 1106 private int getImpliedSystemUiVisibility(WindowManager.LayoutParams params) { 1107 int vis = 0; 1108 // Translucent decor window flags imply stable system ui visibility. 1109 if ((params.flags & WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS) != 0) { 1110 vis |= View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN; 1111 } 1112 if ((params.flags & WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION) != 0) { 1113 vis |= View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION; 1114 } 1115 return vis; 1116 } 1117 1118 private boolean measureHierarchy(final View host, final WindowManager.LayoutParams lp, 1119 final Resources res, final int desiredWindowWidth, final int desiredWindowHeight) { 1120 int childWidthMeasureSpec; 1121 int childHeightMeasureSpec; 1122 boolean windowSizeMayChange = false; 1123 1124 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) Log.v(TAG, 1125 "Measuring " + host + " in display " + desiredWindowWidth 1126 + "x" + desiredWindowHeight + "..."); 1127 1128 boolean goodMeasure = false; 1129 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT) { 1130 // On large screens, we don't want to allow dialogs to just 1131 // stretch to fill the entire width of the screen to display 1132 // one line of text. First try doing the layout at a smaller 1133 // size to see if it will fit. 1134 final DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1135 res.getValue(com.android.internal.R.dimen.config_prefDialogWidth, mTmpValue, true); 1136 int baseSize = 0; 1137 if (mTmpValue.type == TypedValue.TYPE_DIMENSION) { 1138 baseSize = (int)mTmpValue.getDimension(packageMetrics); 1139 } 1140 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": baseSize=" + baseSize); 1141 if (baseSize != 0 && desiredWindowWidth > baseSize) { 1142 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1143 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1144 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1145 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": measured (" 1146 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1147 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1148 goodMeasure = true; 1149 } else { 1150 // Didn't fit in that size... try expanding a bit. 1151 baseSize = (baseSize+desiredWindowWidth)/2; 1152 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": next baseSize=" 1153 + baseSize); 1154 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1155 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1156 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": measured (" 1157 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1158 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1159 if (DEBUG_DIALOG) Log.v(TAG, "Good!"); 1160 goodMeasure = true; 1161 } 1162 } 1163 } 1164 } 1165 1166 if (!goodMeasure) { 1167 childWidthMeasureSpec = getRootMeasureSpec(desiredWindowWidth, lp.width); 1168 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1169 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1170 if (mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) { 1171 windowSizeMayChange = true; 1172 } 1173 } 1174 1175 if (DBG) { 1176 System.out.println("======================================"); 1177 System.out.println("performTraversals -- after measure"); 1178 host.debug(); 1179 } 1180 1181 return windowSizeMayChange; 1182 } 1183 1184 /** 1185 * Modifies the input matrix such that it maps view-local coordinates to 1186 * on-screen coordinates. 1187 * 1188 * @param m input matrix to modify 1189 */ 1190 void transformMatrixToGlobal(Matrix m) { 1191 m.preTranslate(mAttachInfo.mWindowLeft, mAttachInfo.mWindowTop); 1192 } 1193 1194 /** 1195 * Modifies the input matrix such that it maps on-screen coordinates to 1196 * view-local coordinates. 1197 * 1198 * @param m input matrix to modify 1199 */ 1200 void transformMatrixToLocal(Matrix m) { 1201 m.postTranslate(-mAttachInfo.mWindowLeft, -mAttachInfo.mWindowTop); 1202 } 1203 1204 void dispatchApplyInsets(View host) { 1205 mDispatchContentInsets.set(mAttachInfo.mContentInsets); 1206 mDispatchStableInsets.set(mAttachInfo.mStableInsets); 1207 final boolean isRound = (mIsEmulator && mIsCircularEmulator) || mWindowIsRound; 1208 host.dispatchApplyWindowInsets(new WindowInsets( 1209 mDispatchContentInsets, null /* windowDecorInsets */, 1210 mDispatchStableInsets, isRound)); 1211 } 1212 1213 private void performTraversals() { 1214 // cache mView since it is used so much below... 1215 final View host = mView; 1216 1217 if (DBG) { 1218 System.out.println("======================================"); 1219 System.out.println("performTraversals"); 1220 host.debug(); 1221 } 1222 1223 if (host == null || !mAdded) 1224 return; 1225 1226 mIsInTraversal = true; 1227 mWillDrawSoon = true; 1228 boolean windowSizeMayChange = false; 1229 boolean newSurface = false; 1230 boolean surfaceChanged = false; 1231 WindowManager.LayoutParams lp = mWindowAttributes; 1232 1233 int desiredWindowWidth; 1234 int desiredWindowHeight; 1235 1236 final int viewVisibility = getHostVisibility(); 1237 boolean viewVisibilityChanged = mViewVisibility != viewVisibility 1238 || mNewSurfaceNeeded; 1239 1240 WindowManager.LayoutParams params = null; 1241 if (mWindowAttributesChanged) { 1242 mWindowAttributesChanged = false; 1243 surfaceChanged = true; 1244 params = lp; 1245 } 1246 CompatibilityInfo compatibilityInfo = mDisplayAdjustments.getCompatibilityInfo(); 1247 if (compatibilityInfo.supportsScreen() == mLastInCompatMode) { 1248 params = lp; 1249 mFullRedrawNeeded = true; 1250 mLayoutRequested = true; 1251 if (mLastInCompatMode) { 1252 params.privateFlags &= ~WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 1253 mLastInCompatMode = false; 1254 } else { 1255 params.privateFlags |= WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 1256 mLastInCompatMode = true; 1257 } 1258 } 1259 1260 mWindowAttributesChangesFlag = 0; 1261 1262 Rect frame = mWinFrame; 1263 if (mFirst) { 1264 mFullRedrawNeeded = true; 1265 mLayoutRequested = true; 1266 1267 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL 1268 || lp.type == WindowManager.LayoutParams.TYPE_INPUT_METHOD) { 1269 // NOTE -- system code, won't try to do compat mode. 1270 Point size = new Point(); 1271 mDisplay.getRealSize(size); 1272 desiredWindowWidth = size.x; 1273 desiredWindowHeight = size.y; 1274 } else { 1275 DisplayMetrics packageMetrics = 1276 mView.getContext().getResources().getDisplayMetrics(); 1277 desiredWindowWidth = packageMetrics.widthPixels; 1278 desiredWindowHeight = packageMetrics.heightPixels; 1279 } 1280 1281 // We used to use the following condition to choose 32 bits drawing caches: 1282 // PixelFormat.hasAlpha(lp.format) || lp.format == PixelFormat.RGBX_8888 1283 // However, windows are now always 32 bits by default, so choose 32 bits 1284 mAttachInfo.mUse32BitDrawingCache = true; 1285 mAttachInfo.mHasWindowFocus = false; 1286 mAttachInfo.mWindowVisibility = viewVisibility; 1287 mAttachInfo.mRecomputeGlobalAttributes = false; 1288 viewVisibilityChanged = false; 1289 mLastConfiguration.setTo(host.getResources().getConfiguration()); 1290 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1291 // Set the layout direction if it has not been set before (inherit is the default) 1292 if (mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 1293 host.setLayoutDirection(mLastConfiguration.getLayoutDirection()); 1294 } 1295 host.dispatchAttachedToWindow(mAttachInfo, 0); 1296 mAttachInfo.mTreeObserver.dispatchOnWindowAttachedChange(true); 1297 dispatchApplyInsets(host); 1298 //Log.i(TAG, "Screen on initialized: " + attachInfo.mKeepScreenOn); 1299 1300 } else { 1301 desiredWindowWidth = frame.width(); 1302 desiredWindowHeight = frame.height(); 1303 if (desiredWindowWidth != mWidth || desiredWindowHeight != mHeight) { 1304 if (DEBUG_ORIENTATION) Log.v(TAG, 1305 "View " + host + " resized to: " + frame); 1306 mFullRedrawNeeded = true; 1307 mLayoutRequested = true; 1308 windowSizeMayChange = true; 1309 } 1310 } 1311 1312 if (viewVisibilityChanged) { 1313 mAttachInfo.mWindowVisibility = viewVisibility; 1314 host.dispatchWindowVisibilityChanged(viewVisibility); 1315 if (viewVisibility != View.VISIBLE || mNewSurfaceNeeded) { 1316 destroyHardwareResources(); 1317 } 1318 if (viewVisibility == View.GONE) { 1319 // After making a window gone, we will count it as being 1320 // shown for the first time the next time it gets focus. 1321 mHasHadWindowFocus = false; 1322 } 1323 } 1324 1325 // Execute enqueued actions on every traversal in case a detached view enqueued an action 1326 getRunQueue().executeActions(mAttachInfo.mHandler); 1327 1328 boolean insetsChanged = false; 1329 1330 boolean layoutRequested = mLayoutRequested && !mStopped; 1331 if (layoutRequested) { 1332 1333 final Resources res = mView.getContext().getResources(); 1334 1335 if (mFirst) { 1336 // make sure touch mode code executes by setting cached value 1337 // to opposite of the added touch mode. 1338 mAttachInfo.mInTouchMode = !mAddedTouchMode; 1339 ensureTouchModeLocally(mAddedTouchMode); 1340 } else { 1341 if (!mPendingOverscanInsets.equals(mAttachInfo.mOverscanInsets)) { 1342 insetsChanged = true; 1343 } 1344 if (!mPendingContentInsets.equals(mAttachInfo.mContentInsets)) { 1345 insetsChanged = true; 1346 } 1347 if (!mPendingStableInsets.equals(mAttachInfo.mStableInsets)) { 1348 insetsChanged = true; 1349 } 1350 if (!mPendingVisibleInsets.equals(mAttachInfo.mVisibleInsets)) { 1351 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1352 if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: " 1353 + mAttachInfo.mVisibleInsets); 1354 } 1355 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT 1356 || lp.height == ViewGroup.LayoutParams.WRAP_CONTENT) { 1357 windowSizeMayChange = true; 1358 1359 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL 1360 || lp.type == WindowManager.LayoutParams.TYPE_INPUT_METHOD) { 1361 // NOTE -- system code, won't try to do compat mode. 1362 Point size = new Point(); 1363 mDisplay.getRealSize(size); 1364 desiredWindowWidth = size.x; 1365 desiredWindowHeight = size.y; 1366 } else { 1367 DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1368 desiredWindowWidth = packageMetrics.widthPixels; 1369 desiredWindowHeight = packageMetrics.heightPixels; 1370 } 1371 } 1372 } 1373 1374 // Ask host how big it wants to be 1375 windowSizeMayChange |= measureHierarchy(host, lp, res, 1376 desiredWindowWidth, desiredWindowHeight); 1377 } 1378 1379 if (collectViewAttributes()) { 1380 params = lp; 1381 } 1382 if (mAttachInfo.mForceReportNewAttributes) { 1383 mAttachInfo.mForceReportNewAttributes = false; 1384 params = lp; 1385 } 1386 1387 if (mFirst || mAttachInfo.mViewVisibilityChanged) { 1388 mAttachInfo.mViewVisibilityChanged = false; 1389 int resizeMode = mSoftInputMode & 1390 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST; 1391 // If we are in auto resize mode, then we need to determine 1392 // what mode to use now. 1393 if (resizeMode == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 1394 final int N = mAttachInfo.mScrollContainers.size(); 1395 for (int i=0; i<N; i++) { 1396 if (mAttachInfo.mScrollContainers.get(i).isShown()) { 1397 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE; 1398 } 1399 } 1400 if (resizeMode == 0) { 1401 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_PAN; 1402 } 1403 if ((lp.softInputMode & 1404 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) != resizeMode) { 1405 lp.softInputMode = (lp.softInputMode & 1406 ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) | 1407 resizeMode; 1408 params = lp; 1409 } 1410 } 1411 } 1412 1413 if (params != null) { 1414 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 1415 if (!PixelFormat.formatHasAlpha(params.format)) { 1416 params.format = PixelFormat.TRANSLUCENT; 1417 } 1418 } 1419 mAttachInfo.mOverscanRequested = (params.flags 1420 & WindowManager.LayoutParams.FLAG_LAYOUT_IN_OVERSCAN) != 0; 1421 } 1422 1423 if (mApplyInsetsRequested) { 1424 mApplyInsetsRequested = false; 1425 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1426 dispatchApplyInsets(host); 1427 if (mLayoutRequested) { 1428 // Short-circuit catching a new layout request here, so 1429 // we don't need to go through two layout passes when things 1430 // change due to fitting system windows, which can happen a lot. 1431 windowSizeMayChange |= measureHierarchy(host, lp, 1432 mView.getContext().getResources(), 1433 desiredWindowWidth, desiredWindowHeight); 1434 } 1435 } 1436 1437 if (layoutRequested) { 1438 // Clear this now, so that if anything requests a layout in the 1439 // rest of this function we will catch it and re-run a full 1440 // layout pass. 1441 mLayoutRequested = false; 1442 } 1443 1444 boolean windowShouldResize = layoutRequested && windowSizeMayChange 1445 && ((mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) 1446 || (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT && 1447 frame.width() < desiredWindowWidth && frame.width() != mWidth) 1448 || (lp.height == ViewGroup.LayoutParams.WRAP_CONTENT && 1449 frame.height() < desiredWindowHeight && frame.height() != mHeight)); 1450 1451 // Determine whether to compute insets. 1452 // If there are no inset listeners remaining then we may still need to compute 1453 // insets in case the old insets were non-empty and must be reset. 1454 final boolean computesInternalInsets = 1455 mAttachInfo.mTreeObserver.hasComputeInternalInsetsListeners() 1456 || mAttachInfo.mHasNonEmptyGivenInternalInsets; 1457 1458 boolean insetsPending = false; 1459 int relayoutResult = 0; 1460 1461 if (mFirst || windowShouldResize || insetsChanged || 1462 viewVisibilityChanged || params != null) { 1463 1464 if (viewVisibility == View.VISIBLE) { 1465 // If this window is giving internal insets to the window 1466 // manager, and it is being added or changing its visibility, 1467 // then we want to first give the window manager "fake" 1468 // insets to cause it to effectively ignore the content of 1469 // the window during layout. This avoids it briefly causing 1470 // other windows to resize/move based on the raw frame of the 1471 // window, waiting until we can finish laying out this window 1472 // and get back to the window manager with the ultimately 1473 // computed insets. 1474 insetsPending = computesInternalInsets && (mFirst || viewVisibilityChanged); 1475 } 1476 1477 if (mSurfaceHolder != null) { 1478 mSurfaceHolder.mSurfaceLock.lock(); 1479 mDrawingAllowed = true; 1480 } 1481 1482 boolean hwInitialized = false; 1483 boolean contentInsetsChanged = false; 1484 boolean hadSurface = mSurface.isValid(); 1485 1486 try { 1487 if (DEBUG_LAYOUT) { 1488 Log.i(TAG, "host=w:" + host.getMeasuredWidth() + ", h:" + 1489 host.getMeasuredHeight() + ", params=" + params); 1490 } 1491 1492 if (mAttachInfo.mHardwareRenderer != null) { 1493 // relayoutWindow may decide to destroy mSurface. As that decision 1494 // happens in WindowManager service, we need to be defensive here 1495 // and stop using the surface in case it gets destroyed. 1496 mAttachInfo.mHardwareRenderer.pauseSurface(mSurface); 1497 } 1498 final int surfaceGenerationId = mSurface.getGenerationId(); 1499 relayoutResult = relayoutWindow(params, viewVisibility, insetsPending); 1500 if (!mDrawDuringWindowsAnimating && 1501 (relayoutResult & WindowManagerGlobal.RELAYOUT_RES_ANIMATING) != 0) { 1502 mWindowsAnimating = true; 1503 } 1504 1505 if (DEBUG_LAYOUT) Log.v(TAG, "relayout: frame=" + frame.toShortString() 1506 + " overscan=" + mPendingOverscanInsets.toShortString() 1507 + " content=" + mPendingContentInsets.toShortString() 1508 + " visible=" + mPendingVisibleInsets.toShortString() 1509 + " visible=" + mPendingStableInsets.toShortString() 1510 + " surface=" + mSurface); 1511 1512 if (mPendingConfiguration.seq != 0) { 1513 if (DEBUG_CONFIGURATION) Log.v(TAG, "Visible with new config: " 1514 + mPendingConfiguration); 1515 updateConfiguration(mPendingConfiguration, !mFirst); 1516 mPendingConfiguration.seq = 0; 1517 } 1518 1519 final boolean overscanInsetsChanged = !mPendingOverscanInsets.equals( 1520 mAttachInfo.mOverscanInsets); 1521 contentInsetsChanged = !mPendingContentInsets.equals( 1522 mAttachInfo.mContentInsets); 1523 final boolean visibleInsetsChanged = !mPendingVisibleInsets.equals( 1524 mAttachInfo.mVisibleInsets); 1525 final boolean stableInsetsChanged = !mPendingStableInsets.equals( 1526 mAttachInfo.mStableInsets); 1527 if (contentInsetsChanged) { 1528 if (mWidth > 0 && mHeight > 0 && lp != null && 1529 ((lp.systemUiVisibility|lp.subtreeSystemUiVisibility) 1530 & View.SYSTEM_UI_LAYOUT_FLAGS) == 0 && 1531 mSurface != null && mSurface.isValid() && 1532 !mAttachInfo.mTurnOffWindowResizeAnim && 1533 mAttachInfo.mHardwareRenderer != null && 1534 mAttachInfo.mHardwareRenderer.isEnabled() && 1535 lp != null && !PixelFormat.formatHasAlpha(lp.format) 1536 && !mBlockResizeBuffer) { 1537 1538 disposeResizeBuffer(); 1539 1540// TODO: Again.... 1541// if (mResizeBuffer == null) { 1542// mResizeBuffer = mAttachInfo.mHardwareRenderer.createDisplayListLayer( 1543// mWidth, mHeight); 1544// } 1545// mResizeBuffer.prepare(mWidth, mHeight, false); 1546// RenderNode layerRenderNode = mResizeBuffer.startRecording(); 1547// HardwareCanvas layerCanvas = layerRenderNode.start(mWidth, mHeight); 1548// try { 1549// final int restoreCount = layerCanvas.save(); 1550// 1551// int yoff; 1552// final boolean scrolling = mScroller != null 1553// && mScroller.computeScrollOffset(); 1554// if (scrolling) { 1555// yoff = mScroller.getCurrY(); 1556// mScroller.abortAnimation(); 1557// } else { 1558// yoff = mScrollY; 1559// } 1560// 1561// layerCanvas.translate(0, -yoff); 1562// if (mTranslator != null) { 1563// mTranslator.translateCanvas(layerCanvas); 1564// } 1565// 1566// RenderNode renderNode = mView.mRenderNode; 1567// if (renderNode != null && renderNode.isValid()) { 1568// layerCanvas.drawDisplayList(renderNode, null, 1569// RenderNode.FLAG_CLIP_CHILDREN); 1570// } else { 1571// mView.draw(layerCanvas); 1572// } 1573// 1574// drawAccessibilityFocusedDrawableIfNeeded(layerCanvas); 1575// 1576// mResizeBufferStartTime = SystemClock.uptimeMillis(); 1577// mResizeBufferDuration = mView.getResources().getInteger( 1578// com.android.internal.R.integer.config_mediumAnimTime); 1579// 1580// layerCanvas.restoreToCount(restoreCount); 1581// layerRenderNode.end(layerCanvas); 1582// layerRenderNode.setCaching(true); 1583// layerRenderNode.setLeftTopRightBottom(0, 0, mWidth, mHeight); 1584// mTempRect.set(0, 0, mWidth, mHeight); 1585// } finally { 1586// mResizeBuffer.endRecording(mTempRect); 1587// } 1588// mAttachInfo.mHardwareRenderer.flushLayerUpdates(); 1589 } 1590 mAttachInfo.mContentInsets.set(mPendingContentInsets); 1591 if (DEBUG_LAYOUT) Log.v(TAG, "Content insets changing to: " 1592 + mAttachInfo.mContentInsets); 1593 } 1594 if (overscanInsetsChanged) { 1595 mAttachInfo.mOverscanInsets.set(mPendingOverscanInsets); 1596 if (DEBUG_LAYOUT) Log.v(TAG, "Overscan insets changing to: " 1597 + mAttachInfo.mOverscanInsets); 1598 // Need to relayout with content insets. 1599 contentInsetsChanged = true; 1600 } 1601 if (stableInsetsChanged) { 1602 mAttachInfo.mStableInsets.set(mPendingStableInsets); 1603 if (DEBUG_LAYOUT) Log.v(TAG, "Decor insets changing to: " 1604 + mAttachInfo.mStableInsets); 1605 // Need to relayout with content insets. 1606 contentInsetsChanged = true; 1607 } 1608 if (contentInsetsChanged || mLastSystemUiVisibility != 1609 mAttachInfo.mSystemUiVisibility || mApplyInsetsRequested 1610 || mLastOverscanRequested != mAttachInfo.mOverscanRequested) { 1611 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1612 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1613 mApplyInsetsRequested = false; 1614 dispatchApplyInsets(host); 1615 } 1616 if (visibleInsetsChanged) { 1617 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1618 if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: " 1619 + mAttachInfo.mVisibleInsets); 1620 } 1621 1622 if (!hadSurface) { 1623 if (mSurface.isValid()) { 1624 // If we are creating a new surface, then we need to 1625 // completely redraw it. Also, when we get to the 1626 // point of drawing it we will hold off and schedule 1627 // a new traversal instead. This is so we can tell the 1628 // window manager about all of the windows being displayed 1629 // before actually drawing them, so it can display then 1630 // all at once. 1631 newSurface = true; 1632 mFullRedrawNeeded = true; 1633 mPreviousTransparentRegion.setEmpty(); 1634 1635 if (mAttachInfo.mHardwareRenderer != null) { 1636 try { 1637 hwInitialized = mAttachInfo.mHardwareRenderer.initialize( 1638 mSurface); 1639 } catch (OutOfResourcesException e) { 1640 handleOutOfResourcesException(e); 1641 return; 1642 } 1643 } 1644 } 1645 } else if (!mSurface.isValid()) { 1646 // If the surface has been removed, then reset the scroll 1647 // positions. 1648 if (mLastScrolledFocus != null) { 1649 mLastScrolledFocus.clear(); 1650 } 1651 mScrollY = mCurScrollY = 0; 1652 if (mScroller != null) { 1653 mScroller.abortAnimation(); 1654 } 1655 disposeResizeBuffer(); 1656 // Our surface is gone 1657 if (mAttachInfo.mHardwareRenderer != null && 1658 mAttachInfo.mHardwareRenderer.isEnabled()) { 1659 mAttachInfo.mHardwareRenderer.destroy(); 1660 } 1661 } else if (surfaceGenerationId != mSurface.getGenerationId() && 1662 mSurfaceHolder == null && mAttachInfo.mHardwareRenderer != null) { 1663 mFullRedrawNeeded = true; 1664 try { 1665 mAttachInfo.mHardwareRenderer.updateSurface(mSurface); 1666 } catch (OutOfResourcesException e) { 1667 handleOutOfResourcesException(e); 1668 return; 1669 } 1670 } 1671 } catch (RemoteException e) { 1672 } 1673 1674 if (DEBUG_ORIENTATION) Log.v( 1675 TAG, "Relayout returned: frame=" + frame + ", surface=" + mSurface); 1676 1677 mAttachInfo.mWindowLeft = frame.left; 1678 mAttachInfo.mWindowTop = frame.top; 1679 1680 // !!FIXME!! This next section handles the case where we did not get the 1681 // window size we asked for. We should avoid this by getting a maximum size from 1682 // the window session beforehand. 1683 if (mWidth != frame.width() || mHeight != frame.height()) { 1684 mWidth = frame.width(); 1685 mHeight = frame.height(); 1686 } 1687 1688 if (mSurfaceHolder != null) { 1689 // The app owns the surface; tell it about what is going on. 1690 if (mSurface.isValid()) { 1691 // XXX .copyFrom() doesn't work! 1692 //mSurfaceHolder.mSurface.copyFrom(mSurface); 1693 mSurfaceHolder.mSurface = mSurface; 1694 } 1695 mSurfaceHolder.setSurfaceFrameSize(mWidth, mHeight); 1696 mSurfaceHolder.mSurfaceLock.unlock(); 1697 if (mSurface.isValid()) { 1698 if (!hadSurface) { 1699 mSurfaceHolder.ungetCallbacks(); 1700 1701 mIsCreating = true; 1702 mSurfaceHolderCallback.surfaceCreated(mSurfaceHolder); 1703 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1704 if (callbacks != null) { 1705 for (SurfaceHolder.Callback c : callbacks) { 1706 c.surfaceCreated(mSurfaceHolder); 1707 } 1708 } 1709 surfaceChanged = true; 1710 } 1711 if (surfaceChanged) { 1712 mSurfaceHolderCallback.surfaceChanged(mSurfaceHolder, 1713 lp.format, mWidth, mHeight); 1714 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1715 if (callbacks != null) { 1716 for (SurfaceHolder.Callback c : callbacks) { 1717 c.surfaceChanged(mSurfaceHolder, lp.format, 1718 mWidth, mHeight); 1719 } 1720 } 1721 } 1722 mIsCreating = false; 1723 } else if (hadSurface) { 1724 mSurfaceHolder.ungetCallbacks(); 1725 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1726 mSurfaceHolderCallback.surfaceDestroyed(mSurfaceHolder); 1727 if (callbacks != null) { 1728 for (SurfaceHolder.Callback c : callbacks) { 1729 c.surfaceDestroyed(mSurfaceHolder); 1730 } 1731 } 1732 mSurfaceHolder.mSurfaceLock.lock(); 1733 try { 1734 mSurfaceHolder.mSurface = new Surface(); 1735 } finally { 1736 mSurfaceHolder.mSurfaceLock.unlock(); 1737 } 1738 } 1739 } 1740 1741 if (mAttachInfo.mHardwareRenderer != null && 1742 mAttachInfo.mHardwareRenderer.isEnabled()) { 1743 if (hwInitialized || 1744 mWidth != mAttachInfo.mHardwareRenderer.getWidth() || 1745 mHeight != mAttachInfo.mHardwareRenderer.getHeight()) { 1746 final Rect surfaceInsets = params != null ? params.surfaceInsets : null; 1747 mAttachInfo.mHardwareRenderer.setup(mWidth, mHeight, surfaceInsets); 1748 if (!hwInitialized) { 1749 mAttachInfo.mHardwareRenderer.invalidate(mSurface); 1750 mFullRedrawNeeded = true; 1751 } 1752 } 1753 } 1754 1755 if (!mStopped) { 1756 boolean focusChangedDueToTouchMode = ensureTouchModeLocally( 1757 (relayoutResult&WindowManagerGlobal.RELAYOUT_RES_IN_TOUCH_MODE) != 0); 1758 if (focusChangedDueToTouchMode || mWidth != host.getMeasuredWidth() 1759 || mHeight != host.getMeasuredHeight() || contentInsetsChanged) { 1760 int childWidthMeasureSpec = getRootMeasureSpec(mWidth, lp.width); 1761 int childHeightMeasureSpec = getRootMeasureSpec(mHeight, lp.height); 1762 1763 if (DEBUG_LAYOUT) Log.v(TAG, "Ooops, something changed! mWidth=" 1764 + mWidth + " measuredWidth=" + host.getMeasuredWidth() 1765 + " mHeight=" + mHeight 1766 + " measuredHeight=" + host.getMeasuredHeight() 1767 + " coveredInsetsChanged=" + contentInsetsChanged); 1768 1769 // Ask host how big it wants to be 1770 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1771 1772 // Implementation of weights from WindowManager.LayoutParams 1773 // We just grow the dimensions as needed and re-measure if 1774 // needs be 1775 int width = host.getMeasuredWidth(); 1776 int height = host.getMeasuredHeight(); 1777 boolean measureAgain = false; 1778 1779 if (lp.horizontalWeight > 0.0f) { 1780 width += (int) ((mWidth - width) * lp.horizontalWeight); 1781 childWidthMeasureSpec = MeasureSpec.makeMeasureSpec(width, 1782 MeasureSpec.EXACTLY); 1783 measureAgain = true; 1784 } 1785 if (lp.verticalWeight > 0.0f) { 1786 height += (int) ((mHeight - height) * lp.verticalWeight); 1787 childHeightMeasureSpec = MeasureSpec.makeMeasureSpec(height, 1788 MeasureSpec.EXACTLY); 1789 measureAgain = true; 1790 } 1791 1792 if (measureAgain) { 1793 if (DEBUG_LAYOUT) Log.v(TAG, 1794 "And hey let's measure once more: width=" + width 1795 + " height=" + height); 1796 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1797 } 1798 1799 layoutRequested = true; 1800 } 1801 } 1802 } else { 1803 // Not the first pass and no window/insets/visibility change but the window 1804 // may have moved and we need check that and if so to update the left and right 1805 // in the attach info. We translate only the window frame since on window move 1806 // the window manager tells us only for the new frame but the insets are the 1807 // same and we do not want to translate them more than once. 1808 1809 // TODO: Well, we are checking whether the frame has changed similarly 1810 // to how this is done for the insets. This is however incorrect since 1811 // the insets and the frame are translated. For example, the old frame 1812 // was (1, 1 - 1, 1) and was translated to say (2, 2 - 2, 2), now the new 1813 // reported frame is (2, 2 - 2, 2) which implies no change but this is not 1814 // true since we are comparing a not translated value to a translated one. 1815 // This scenario is rare but we may want to fix that. 1816 1817 final boolean windowMoved = (mAttachInfo.mWindowLeft != frame.left 1818 || mAttachInfo.mWindowTop != frame.top); 1819 if (windowMoved) { 1820 if (mTranslator != null) { 1821 mTranslator.translateRectInScreenToAppWinFrame(frame); 1822 } 1823 mAttachInfo.mWindowLeft = frame.left; 1824 mAttachInfo.mWindowTop = frame.top; 1825 } 1826 } 1827 1828 final boolean didLayout = layoutRequested && !mStopped; 1829 boolean triggerGlobalLayoutListener = didLayout 1830 || mAttachInfo.mRecomputeGlobalAttributes; 1831 if (didLayout) { 1832 performLayout(lp, desiredWindowWidth, desiredWindowHeight); 1833 1834 // By this point all views have been sized and positioned 1835 // We can compute the transparent area 1836 1837 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 1838 // start out transparent 1839 // TODO: AVOID THAT CALL BY CACHING THE RESULT? 1840 host.getLocationInWindow(mTmpLocation); 1841 mTransparentRegion.set(mTmpLocation[0], mTmpLocation[1], 1842 mTmpLocation[0] + host.mRight - host.mLeft, 1843 mTmpLocation[1] + host.mBottom - host.mTop); 1844 1845 host.gatherTransparentRegion(mTransparentRegion); 1846 if (mTranslator != null) { 1847 mTranslator.translateRegionInWindowToScreen(mTransparentRegion); 1848 } 1849 1850 if (!mTransparentRegion.equals(mPreviousTransparentRegion)) { 1851 mPreviousTransparentRegion.set(mTransparentRegion); 1852 mFullRedrawNeeded = true; 1853 // reconfigure window manager 1854 try { 1855 mWindowSession.setTransparentRegion(mWindow, mTransparentRegion); 1856 } catch (RemoteException e) { 1857 } 1858 } 1859 } 1860 1861 if (DBG) { 1862 System.out.println("======================================"); 1863 System.out.println("performTraversals -- after setFrame"); 1864 host.debug(); 1865 } 1866 } 1867 1868 if (triggerGlobalLayoutListener) { 1869 mAttachInfo.mRecomputeGlobalAttributes = false; 1870 mAttachInfo.mTreeObserver.dispatchOnGlobalLayout(); 1871 } 1872 1873 if (computesInternalInsets) { 1874 // Clear the original insets. 1875 final ViewTreeObserver.InternalInsetsInfo insets = mAttachInfo.mGivenInternalInsets; 1876 insets.reset(); 1877 1878 // Compute new insets in place. 1879 mAttachInfo.mTreeObserver.dispatchOnComputeInternalInsets(insets); 1880 mAttachInfo.mHasNonEmptyGivenInternalInsets = !insets.isEmpty(); 1881 1882 // Tell the window manager. 1883 if (insetsPending || !mLastGivenInsets.equals(insets)) { 1884 mLastGivenInsets.set(insets); 1885 1886 // Translate insets to screen coordinates if needed. 1887 final Rect contentInsets; 1888 final Rect visibleInsets; 1889 final Region touchableRegion; 1890 if (mTranslator != null) { 1891 contentInsets = mTranslator.getTranslatedContentInsets(insets.contentInsets); 1892 visibleInsets = mTranslator.getTranslatedVisibleInsets(insets.visibleInsets); 1893 touchableRegion = mTranslator.getTranslatedTouchableArea(insets.touchableRegion); 1894 } else { 1895 contentInsets = insets.contentInsets; 1896 visibleInsets = insets.visibleInsets; 1897 touchableRegion = insets.touchableRegion; 1898 } 1899 1900 try { 1901 mWindowSession.setInsets(mWindow, insets.mTouchableInsets, 1902 contentInsets, visibleInsets, touchableRegion); 1903 } catch (RemoteException e) { 1904 } 1905 } 1906 } 1907 1908 boolean skipDraw = false; 1909 1910 if (mFirst) { 1911 // handle first focus request 1912 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: mView.hasFocus()=" 1913 + mView.hasFocus()); 1914 if (mView != null) { 1915 if (!mView.hasFocus()) { 1916 mView.requestFocus(View.FOCUS_FORWARD); 1917 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: requested focused view=" 1918 + mView.findFocus()); 1919 } else { 1920 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: existing focused view=" 1921 + mView.findFocus()); 1922 } 1923 } 1924 if ((relayoutResult & WindowManagerGlobal.RELAYOUT_RES_ANIMATING) != 0) { 1925 // The first time we relayout the window, if the system is 1926 // doing window animations, we want to hold of on any future 1927 // draws until the animation is done. 1928 mWindowsAnimating = true; 1929 } 1930 } else if (mWindowsAnimating) { 1931 skipDraw = true; 1932 } 1933 1934 mFirst = false; 1935 mWillDrawSoon = false; 1936 mNewSurfaceNeeded = false; 1937 mViewVisibility = viewVisibility; 1938 1939 if (mAttachInfo.mHasWindowFocus && !isInLocalFocusMode()) { 1940 final boolean imTarget = WindowManager.LayoutParams 1941 .mayUseInputMethod(mWindowAttributes.flags); 1942 if (imTarget != mLastWasImTarget) { 1943 mLastWasImTarget = imTarget; 1944 InputMethodManager imm = InputMethodManager.peekInstance(); 1945 if (imm != null && imTarget) { 1946 imm.startGettingWindowFocus(mView); 1947 imm.onWindowFocus(mView, mView.findFocus(), 1948 mWindowAttributes.softInputMode, 1949 !mHasHadWindowFocus, mWindowAttributes.flags); 1950 } 1951 } 1952 } 1953 1954 // Remember if we must report the next draw. 1955 if ((relayoutResult & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 1956 mReportNextDraw = true; 1957 } 1958 1959 boolean cancelDraw = mAttachInfo.mTreeObserver.dispatchOnPreDraw() || 1960 viewVisibility != View.VISIBLE; 1961 1962 if (!cancelDraw && !newSurface) { 1963 if (!skipDraw || mReportNextDraw) { 1964 if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 1965 for (int i = 0; i < mPendingTransitions.size(); ++i) { 1966 mPendingTransitions.get(i).startChangingAnimations(); 1967 } 1968 mPendingTransitions.clear(); 1969 } 1970 1971 performDraw(); 1972 } 1973 } else { 1974 if (viewVisibility == View.VISIBLE) { 1975 // Try again 1976 scheduleTraversals(); 1977 } else if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 1978 for (int i = 0; i < mPendingTransitions.size(); ++i) { 1979 mPendingTransitions.get(i).endChangingAnimations(); 1980 } 1981 mPendingTransitions.clear(); 1982 } 1983 } 1984 1985 mIsInTraversal = false; 1986 } 1987 1988 private void handleOutOfResourcesException(Surface.OutOfResourcesException e) { 1989 Log.e(TAG, "OutOfResourcesException initializing HW surface", e); 1990 try { 1991 if (!mWindowSession.outOfMemory(mWindow) && 1992 Process.myUid() != Process.SYSTEM_UID) { 1993 Slog.w(TAG, "No processes killed for memory; killing self"); 1994 Process.killProcess(Process.myPid()); 1995 } 1996 } catch (RemoteException ex) { 1997 } 1998 mLayoutRequested = true; // ask wm for a new surface next time. 1999 } 2000 2001 private void performMeasure(int childWidthMeasureSpec, int childHeightMeasureSpec) { 2002 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "measure"); 2003 try { 2004 mView.measure(childWidthMeasureSpec, childHeightMeasureSpec); 2005 } finally { 2006 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2007 } 2008 } 2009 2010 /** 2011 * Called by {@link android.view.View#isInLayout()} to determine whether the view hierarchy 2012 * is currently undergoing a layout pass. 2013 * 2014 * @return whether the view hierarchy is currently undergoing a layout pass 2015 */ 2016 boolean isInLayout() { 2017 return mInLayout; 2018 } 2019 2020 /** 2021 * Called by {@link android.view.View#requestLayout()} if the view hierarchy is currently 2022 * undergoing a layout pass. requestLayout() should not generally be called during layout, 2023 * unless the container hierarchy knows what it is doing (i.e., it is fine as long as 2024 * all children in that container hierarchy are measured and laid out at the end of the layout 2025 * pass for that container). If requestLayout() is called anyway, we handle it correctly 2026 * by registering all requesters during a frame as it proceeds. At the end of the frame, 2027 * we check all of those views to see if any still have pending layout requests, which 2028 * indicates that they were not correctly handled by their container hierarchy. If that is 2029 * the case, we clear all such flags in the tree, to remove the buggy flag state that leads 2030 * to blank containers, and force a second request/measure/layout pass in this frame. If 2031 * more requestLayout() calls are received during that second layout pass, we post those 2032 * requests to the next frame to avoid possible infinite loops. 2033 * 2034 * <p>The return value from this method indicates whether the request should proceed 2035 * (if it is a request during the first layout pass) or should be skipped and posted to the 2036 * next frame (if it is a request during the second layout pass).</p> 2037 * 2038 * @param view the view that requested the layout. 2039 * 2040 * @return true if request should proceed, false otherwise. 2041 */ 2042 boolean requestLayoutDuringLayout(final View view) { 2043 if (view.mParent == null || view.mAttachInfo == null) { 2044 // Would not normally trigger another layout, so just let it pass through as usual 2045 return true; 2046 } 2047 if (!mLayoutRequesters.contains(view)) { 2048 mLayoutRequesters.add(view); 2049 } 2050 if (!mHandlingLayoutInLayoutRequest) { 2051 // Let the request proceed normally; it will be processed in a second layout pass 2052 // if necessary 2053 return true; 2054 } else { 2055 // Don't let the request proceed during the second layout pass. 2056 // It will post to the next frame instead. 2057 return false; 2058 } 2059 } 2060 2061 private void performLayout(WindowManager.LayoutParams lp, int desiredWindowWidth, 2062 int desiredWindowHeight) { 2063 mLayoutRequested = false; 2064 mScrollMayChange = true; 2065 mInLayout = true; 2066 2067 final View host = mView; 2068 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) { 2069 Log.v(TAG, "Laying out " + host + " to (" + 2070 host.getMeasuredWidth() + ", " + host.getMeasuredHeight() + ")"); 2071 } 2072 2073 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "layout"); 2074 try { 2075 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 2076 2077 mInLayout = false; 2078 int numViewsRequestingLayout = mLayoutRequesters.size(); 2079 if (numViewsRequestingLayout > 0) { 2080 // requestLayout() was called during layout. 2081 // If no layout-request flags are set on the requesting views, there is no problem. 2082 // If some requests are still pending, then we need to clear those flags and do 2083 // a full request/measure/layout pass to handle this situation. 2084 ArrayList<View> validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, 2085 false); 2086 if (validLayoutRequesters != null) { 2087 // Set this flag to indicate that any further requests are happening during 2088 // the second pass, which may result in posting those requests to the next 2089 // frame instead 2090 mHandlingLayoutInLayoutRequest = true; 2091 2092 // Process fresh layout requests, then measure and layout 2093 int numValidRequests = validLayoutRequesters.size(); 2094 for (int i = 0; i < numValidRequests; ++i) { 2095 final View view = validLayoutRequesters.get(i); 2096 Log.w("View", "requestLayout() improperly called by " + view + 2097 " during layout: running second layout pass"); 2098 view.requestLayout(); 2099 } 2100 measureHierarchy(host, lp, mView.getContext().getResources(), 2101 desiredWindowWidth, desiredWindowHeight); 2102 mInLayout = true; 2103 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 2104 2105 mHandlingLayoutInLayoutRequest = false; 2106 2107 // Check the valid requests again, this time without checking/clearing the 2108 // layout flags, since requests happening during the second pass get noop'd 2109 validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, true); 2110 if (validLayoutRequesters != null) { 2111 final ArrayList<View> finalRequesters = validLayoutRequesters; 2112 // Post second-pass requests to the next frame 2113 getRunQueue().post(new Runnable() { 2114 @Override 2115 public void run() { 2116 int numValidRequests = finalRequesters.size(); 2117 for (int i = 0; i < numValidRequests; ++i) { 2118 final View view = finalRequesters.get(i); 2119 Log.w("View", "requestLayout() improperly called by " + view + 2120 " during second layout pass: posting in next frame"); 2121 view.requestLayout(); 2122 } 2123 } 2124 }); 2125 } 2126 } 2127 2128 } 2129 } finally { 2130 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2131 } 2132 mInLayout = false; 2133 } 2134 2135 /** 2136 * This method is called during layout when there have been calls to requestLayout() during 2137 * layout. It walks through the list of views that requested layout to determine which ones 2138 * still need it, based on visibility in the hierarchy and whether they have already been 2139 * handled (as is usually the case with ListView children). 2140 * 2141 * @param layoutRequesters The list of views that requested layout during layout 2142 * @param secondLayoutRequests Whether the requests were issued during the second layout pass. 2143 * If so, the FORCE_LAYOUT flag was not set on requesters. 2144 * @return A list of the actual views that still need to be laid out. 2145 */ 2146 private ArrayList<View> getValidLayoutRequesters(ArrayList<View> layoutRequesters, 2147 boolean secondLayoutRequests) { 2148 2149 int numViewsRequestingLayout = layoutRequesters.size(); 2150 ArrayList<View> validLayoutRequesters = null; 2151 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2152 View view = layoutRequesters.get(i); 2153 if (view != null && view.mAttachInfo != null && view.mParent != null && 2154 (secondLayoutRequests || (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) == 2155 View.PFLAG_FORCE_LAYOUT)) { 2156 boolean gone = false; 2157 View parent = view; 2158 // Only trigger new requests for views in a non-GONE hierarchy 2159 while (parent != null) { 2160 if ((parent.mViewFlags & View.VISIBILITY_MASK) == View.GONE) { 2161 gone = true; 2162 break; 2163 } 2164 if (parent.mParent instanceof View) { 2165 parent = (View) parent.mParent; 2166 } else { 2167 parent = null; 2168 } 2169 } 2170 if (!gone) { 2171 if (validLayoutRequesters == null) { 2172 validLayoutRequesters = new ArrayList<View>(); 2173 } 2174 validLayoutRequesters.add(view); 2175 } 2176 } 2177 } 2178 if (!secondLayoutRequests) { 2179 // If we're checking the layout flags, then we need to clean them up also 2180 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2181 View view = layoutRequesters.get(i); 2182 while (view != null && 2183 (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) != 0) { 2184 view.mPrivateFlags &= ~View.PFLAG_FORCE_LAYOUT; 2185 if (view.mParent instanceof View) { 2186 view = (View) view.mParent; 2187 } else { 2188 view = null; 2189 } 2190 } 2191 } 2192 } 2193 layoutRequesters.clear(); 2194 return validLayoutRequesters; 2195 } 2196 2197 @Override 2198 public void requestTransparentRegion(View child) { 2199 // the test below should not fail unless someone is messing with us 2200 checkThread(); 2201 if (mView == child) { 2202 mView.mPrivateFlags |= View.PFLAG_REQUEST_TRANSPARENT_REGIONS; 2203 // Need to make sure we re-evaluate the window attributes next 2204 // time around, to ensure the window has the correct format. 2205 mWindowAttributesChanged = true; 2206 mWindowAttributesChangesFlag = 0; 2207 requestLayout(); 2208 } 2209 } 2210 2211 /** 2212 * Figures out the measure spec for the root view in a window based on it's 2213 * layout params. 2214 * 2215 * @param windowSize 2216 * The available width or height of the window 2217 * 2218 * @param rootDimension 2219 * The layout params for one dimension (width or height) of the 2220 * window. 2221 * 2222 * @return The measure spec to use to measure the root view. 2223 */ 2224 private static int getRootMeasureSpec(int windowSize, int rootDimension) { 2225 int measureSpec; 2226 switch (rootDimension) { 2227 2228 case ViewGroup.LayoutParams.MATCH_PARENT: 2229 // Window can't resize. Force root view to be windowSize. 2230 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.EXACTLY); 2231 break; 2232 case ViewGroup.LayoutParams.WRAP_CONTENT: 2233 // Window can resize. Set max size for root view. 2234 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.AT_MOST); 2235 break; 2236 default: 2237 // Window wants to be an exact size. Force root view to be that size. 2238 measureSpec = MeasureSpec.makeMeasureSpec(rootDimension, MeasureSpec.EXACTLY); 2239 break; 2240 } 2241 return measureSpec; 2242 } 2243 2244 int mHardwareXOffset; 2245 int mHardwareYOffset; 2246 int mResizeAlpha; 2247 final Paint mResizePaint = new Paint(); 2248 2249 @Override 2250 public void onHardwarePreDraw(HardwareCanvas canvas) { 2251 canvas.translate(-mHardwareXOffset, -mHardwareYOffset); 2252 } 2253 2254 @Override 2255 public void onHardwarePostDraw(HardwareCanvas canvas) { 2256 if (mResizeBuffer != null) { 2257 mResizePaint.setAlpha(mResizeAlpha); 2258 canvas.drawHardwareLayer(mResizeBuffer, mHardwareXOffset, mHardwareYOffset, 2259 mResizePaint); 2260 } 2261 } 2262 2263 /** 2264 * @hide 2265 */ 2266 void outputDisplayList(View view) { 2267 RenderNode renderNode = view.getDisplayList(); 2268 if (renderNode != null) { 2269 renderNode.output(); 2270 } 2271 } 2272 2273 /** 2274 * @see #PROPERTY_PROFILE_RENDERING 2275 */ 2276 private void profileRendering(boolean enabled) { 2277 if (mProfileRendering) { 2278 mRenderProfilingEnabled = enabled; 2279 2280 if (mRenderProfiler != null) { 2281 mChoreographer.removeFrameCallback(mRenderProfiler); 2282 } 2283 if (mRenderProfilingEnabled) { 2284 if (mRenderProfiler == null) { 2285 mRenderProfiler = new Choreographer.FrameCallback() { 2286 @Override 2287 public void doFrame(long frameTimeNanos) { 2288 mDirty.set(0, 0, mWidth, mHeight); 2289 scheduleTraversals(); 2290 if (mRenderProfilingEnabled) { 2291 mChoreographer.postFrameCallback(mRenderProfiler); 2292 } 2293 } 2294 }; 2295 } 2296 mChoreographer.postFrameCallback(mRenderProfiler); 2297 } else { 2298 mRenderProfiler = null; 2299 } 2300 } 2301 } 2302 2303 /** 2304 * Called from draw() when DEBUG_FPS is enabled 2305 */ 2306 private void trackFPS() { 2307 // Tracks frames per second drawn. First value in a series of draws may be bogus 2308 // because it down not account for the intervening idle time 2309 long nowTime = System.currentTimeMillis(); 2310 if (mFpsStartTime < 0) { 2311 mFpsStartTime = mFpsPrevTime = nowTime; 2312 mFpsNumFrames = 0; 2313 } else { 2314 ++mFpsNumFrames; 2315 String thisHash = Integer.toHexString(System.identityHashCode(this)); 2316 long frameTime = nowTime - mFpsPrevTime; 2317 long totalTime = nowTime - mFpsStartTime; 2318 Log.v(TAG, "0x" + thisHash + "\tFrame time:\t" + frameTime); 2319 mFpsPrevTime = nowTime; 2320 if (totalTime > 1000) { 2321 float fps = (float) mFpsNumFrames * 1000 / totalTime; 2322 Log.v(TAG, "0x" + thisHash + "\tFPS:\t" + fps); 2323 mFpsStartTime = nowTime; 2324 mFpsNumFrames = 0; 2325 } 2326 } 2327 } 2328 2329 private void performDraw() { 2330 if (mAttachInfo.mDisplayState == Display.STATE_OFF && !mReportNextDraw) { 2331 return; 2332 } 2333 2334 final boolean fullRedrawNeeded = mFullRedrawNeeded; 2335 mFullRedrawNeeded = false; 2336 2337 mIsDrawing = true; 2338 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "draw"); 2339 try { 2340 draw(fullRedrawNeeded); 2341 } finally { 2342 mIsDrawing = false; 2343 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2344 } 2345 2346 // For whatever reason we didn't create a HardwareRenderer, end any 2347 // hardware animations that are now dangling 2348 if (mAttachInfo.mPendingAnimatingRenderNodes != null) { 2349 final int count = mAttachInfo.mPendingAnimatingRenderNodes.size(); 2350 for (int i = 0; i < count; i++) { 2351 mAttachInfo.mPendingAnimatingRenderNodes.get(i).endAllAnimators(); 2352 } 2353 mAttachInfo.mPendingAnimatingRenderNodes.clear(); 2354 } 2355 2356 if (mReportNextDraw) { 2357 mReportNextDraw = false; 2358 if (mAttachInfo.mHardwareRenderer != null) { 2359 mAttachInfo.mHardwareRenderer.fence(); 2360 } 2361 2362 if (LOCAL_LOGV) { 2363 Log.v(TAG, "FINISHED DRAWING: " + mWindowAttributes.getTitle()); 2364 } 2365 if (mSurfaceHolder != null && mSurface.isValid()) { 2366 mSurfaceHolderCallback.surfaceRedrawNeeded(mSurfaceHolder); 2367 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 2368 if (callbacks != null) { 2369 for (SurfaceHolder.Callback c : callbacks) { 2370 if (c instanceof SurfaceHolder.Callback2) { 2371 ((SurfaceHolder.Callback2)c).surfaceRedrawNeeded( 2372 mSurfaceHolder); 2373 } 2374 } 2375 } 2376 } 2377 try { 2378 mWindowSession.finishDrawing(mWindow); 2379 } catch (RemoteException e) { 2380 } 2381 } 2382 } 2383 2384 private void draw(boolean fullRedrawNeeded) { 2385 Surface surface = mSurface; 2386 if (!surface.isValid()) { 2387 return; 2388 } 2389 2390 if (DEBUG_FPS) { 2391 trackFPS(); 2392 } 2393 2394 if (!sFirstDrawComplete) { 2395 synchronized (sFirstDrawHandlers) { 2396 sFirstDrawComplete = true; 2397 final int count = sFirstDrawHandlers.size(); 2398 for (int i = 0; i< count; i++) { 2399 mHandler.post(sFirstDrawHandlers.get(i)); 2400 } 2401 } 2402 } 2403 2404 scrollToRectOrFocus(null, false); 2405 2406 if (mAttachInfo.mViewScrollChanged) { 2407 mAttachInfo.mViewScrollChanged = false; 2408 mAttachInfo.mTreeObserver.dispatchOnScrollChanged(); 2409 } 2410 2411 boolean animating = mScroller != null && mScroller.computeScrollOffset(); 2412 final int curScrollY; 2413 if (animating) { 2414 curScrollY = mScroller.getCurrY(); 2415 } else { 2416 curScrollY = mScrollY; 2417 } 2418 if (mCurScrollY != curScrollY) { 2419 mCurScrollY = curScrollY; 2420 fullRedrawNeeded = true; 2421 } 2422 2423 final float appScale = mAttachInfo.mApplicationScale; 2424 final boolean scalingRequired = mAttachInfo.mScalingRequired; 2425 2426 int resizeAlpha = 0; 2427 if (mResizeBuffer != null) { 2428 long deltaTime = SystemClock.uptimeMillis() - mResizeBufferStartTime; 2429 if (deltaTime < mResizeBufferDuration) { 2430 float amt = deltaTime/(float) mResizeBufferDuration; 2431 amt = mResizeInterpolator.getInterpolation(amt); 2432 animating = true; 2433 resizeAlpha = 255 - (int)(amt*255); 2434 } else { 2435 disposeResizeBuffer(); 2436 } 2437 } 2438 2439 final Rect dirty = mDirty; 2440 if (mSurfaceHolder != null) { 2441 // The app owns the surface, we won't draw. 2442 dirty.setEmpty(); 2443 if (animating) { 2444 if (mScroller != null) { 2445 mScroller.abortAnimation(); 2446 } 2447 disposeResizeBuffer(); 2448 } 2449 return; 2450 } 2451 2452 if (fullRedrawNeeded) { 2453 mAttachInfo.mIgnoreDirtyState = true; 2454 dirty.set(0, 0, (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 2455 } 2456 2457 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2458 Log.v(TAG, "Draw " + mView + "/" 2459 + mWindowAttributes.getTitle() 2460 + ": dirty={" + dirty.left + "," + dirty.top 2461 + "," + dirty.right + "," + dirty.bottom + "} surface=" 2462 + surface + " surface.isValid()=" + surface.isValid() + ", appScale:" + 2463 appScale + ", width=" + mWidth + ", height=" + mHeight); 2464 } 2465 2466 mAttachInfo.mTreeObserver.dispatchOnDraw(); 2467 2468 int xOffset = 0; 2469 int yOffset = curScrollY; 2470 final WindowManager.LayoutParams params = mWindowAttributes; 2471 final Rect surfaceInsets = params != null ? params.surfaceInsets : null; 2472 if (surfaceInsets != null) { 2473 xOffset -= surfaceInsets.left; 2474 yOffset -= surfaceInsets.top; 2475 2476 // Offset dirty rect for surface insets. 2477 dirty.offset(surfaceInsets.left, surfaceInsets.right); 2478 } 2479 2480 if (!dirty.isEmpty() || mIsAnimating) { 2481 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled()) { 2482 // Draw with hardware renderer. 2483 mIsAnimating = false; 2484 boolean invalidateRoot = false; 2485 if (mHardwareYOffset != yOffset || mHardwareXOffset != xOffset) { 2486 mHardwareYOffset = yOffset; 2487 mHardwareXOffset = xOffset; 2488 mAttachInfo.mHardwareRenderer.invalidateRoot(); 2489 } 2490 mResizeAlpha = resizeAlpha; 2491 2492 dirty.setEmpty(); 2493 2494 mBlockResizeBuffer = false; 2495 mAttachInfo.mHardwareRenderer.draw(mView, mAttachInfo, this); 2496 } else { 2497 // If we get here with a disabled & requested hardware renderer, something went 2498 // wrong (an invalidate posted right before we destroyed the hardware surface 2499 // for instance) so we should just bail out. Locking the surface with software 2500 // rendering at this point would lock it forever and prevent hardware renderer 2501 // from doing its job when it comes back. 2502 // Before we request a new frame we must however attempt to reinitiliaze the 2503 // hardware renderer if it's in requested state. This would happen after an 2504 // eglTerminate() for instance. 2505 if (mAttachInfo.mHardwareRenderer != null && 2506 !mAttachInfo.mHardwareRenderer.isEnabled() && 2507 mAttachInfo.mHardwareRenderer.isRequested()) { 2508 2509 try { 2510 mAttachInfo.mHardwareRenderer.initializeIfNeeded( 2511 mWidth, mHeight, mSurface, surfaceInsets); 2512 } catch (OutOfResourcesException e) { 2513 handleOutOfResourcesException(e); 2514 return; 2515 } 2516 2517 mFullRedrawNeeded = true; 2518 scheduleTraversals(); 2519 return; 2520 } 2521 2522 if (!drawSoftware(surface, mAttachInfo, xOffset, yOffset, scalingRequired, dirty)) { 2523 return; 2524 } 2525 } 2526 } 2527 2528 if (animating) { 2529 mFullRedrawNeeded = true; 2530 scheduleTraversals(); 2531 } 2532 } 2533 2534 /** 2535 * @return true if drawing was successful, false if an error occurred 2536 */ 2537 private boolean drawSoftware(Surface surface, AttachInfo attachInfo, int xoff, int yoff, 2538 boolean scalingRequired, Rect dirty) { 2539 2540 // Draw with software renderer. 2541 final Canvas canvas; 2542 try { 2543 final int left = dirty.left; 2544 final int top = dirty.top; 2545 final int right = dirty.right; 2546 final int bottom = dirty.bottom; 2547 2548 canvas = mSurface.lockCanvas(dirty); 2549 2550 // The dirty rectangle can be modified by Surface.lockCanvas() 2551 //noinspection ConstantConditions 2552 if (left != dirty.left || top != dirty.top || right != dirty.right 2553 || bottom != dirty.bottom) { 2554 attachInfo.mIgnoreDirtyState = true; 2555 } 2556 2557 // TODO: Do this in native 2558 canvas.setDensity(mDensity); 2559 } catch (Surface.OutOfResourcesException e) { 2560 handleOutOfResourcesException(e); 2561 return false; 2562 } catch (IllegalArgumentException e) { 2563 Log.e(TAG, "Could not lock surface", e); 2564 // Don't assume this is due to out of memory, it could be 2565 // something else, and if it is something else then we could 2566 // kill stuff (or ourself) for no reason. 2567 mLayoutRequested = true; // ask wm for a new surface next time. 2568 return false; 2569 } 2570 2571 try { 2572 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2573 Log.v(TAG, "Surface " + surface + " drawing to bitmap w=" 2574 + canvas.getWidth() + ", h=" + canvas.getHeight()); 2575 //canvas.drawARGB(255, 255, 0, 0); 2576 } 2577 2578 // If this bitmap's format includes an alpha channel, we 2579 // need to clear it before drawing so that the child will 2580 // properly re-composite its drawing on a transparent 2581 // background. This automatically respects the clip/dirty region 2582 // or 2583 // If we are applying an offset, we need to clear the area 2584 // where the offset doesn't appear to avoid having garbage 2585 // left in the blank areas. 2586 if (!canvas.isOpaque() || yoff != 0 || xoff != 0) { 2587 canvas.drawColor(0, PorterDuff.Mode.CLEAR); 2588 } 2589 2590 dirty.setEmpty(); 2591 mIsAnimating = false; 2592 attachInfo.mDrawingTime = SystemClock.uptimeMillis(); 2593 mView.mPrivateFlags |= View.PFLAG_DRAWN; 2594 2595 if (DEBUG_DRAW) { 2596 Context cxt = mView.getContext(); 2597 Log.i(TAG, "Drawing: package:" + cxt.getPackageName() + 2598 ", metrics=" + cxt.getResources().getDisplayMetrics() + 2599 ", compatibilityInfo=" + cxt.getResources().getCompatibilityInfo()); 2600 } 2601 try { 2602 canvas.translate(-xoff, -yoff); 2603 if (mTranslator != null) { 2604 mTranslator.translateCanvas(canvas); 2605 } 2606 canvas.setScreenDensity(scalingRequired ? mNoncompatDensity : 0); 2607 attachInfo.mSetIgnoreDirtyState = false; 2608 2609 mView.draw(canvas); 2610 } finally { 2611 if (!attachInfo.mSetIgnoreDirtyState) { 2612 // Only clear the flag if it was not set during the mView.draw() call 2613 attachInfo.mIgnoreDirtyState = false; 2614 } 2615 } 2616 } finally { 2617 try { 2618 surface.unlockCanvasAndPost(canvas); 2619 } catch (IllegalArgumentException e) { 2620 Log.e(TAG, "Could not unlock surface", e); 2621 mLayoutRequested = true; // ask wm for a new surface next time. 2622 //noinspection ReturnInsideFinallyBlock 2623 return false; 2624 } 2625 2626 if (LOCAL_LOGV) { 2627 Log.v(TAG, "Surface " + surface + " unlockCanvasAndPost"); 2628 } 2629 } 2630 return true; 2631 } 2632 2633 Drawable getAccessibilityFocusedDrawable() { 2634 // Lazily load the accessibility focus drawable. 2635 if (mAttachInfo.mAccessibilityFocusDrawable == null) { 2636 final TypedValue value = new TypedValue(); 2637 final boolean resolved = mView.mContext.getTheme().resolveAttribute( 2638 R.attr.accessibilityFocusedDrawable, value, true); 2639 if (resolved) { 2640 mAttachInfo.mAccessibilityFocusDrawable = 2641 mView.mContext.getDrawable(value.resourceId); 2642 } 2643 } 2644 return mAttachInfo.mAccessibilityFocusDrawable; 2645 } 2646 2647 /** 2648 * @hide 2649 */ 2650 public void setDrawDuringWindowsAnimating(boolean value) { 2651 mDrawDuringWindowsAnimating = value; 2652 if (value) { 2653 handleDispatchDoneAnimating(); 2654 } 2655 } 2656 2657 boolean scrollToRectOrFocus(Rect rectangle, boolean immediate) { 2658 final Rect ci = mAttachInfo.mContentInsets; 2659 final Rect vi = mAttachInfo.mVisibleInsets; 2660 int scrollY = 0; 2661 boolean handled = false; 2662 2663 if (vi.left > ci.left || vi.top > ci.top 2664 || vi.right > ci.right || vi.bottom > ci.bottom) { 2665 // We'll assume that we aren't going to change the scroll 2666 // offset, since we want to avoid that unless it is actually 2667 // going to make the focus visible... otherwise we scroll 2668 // all over the place. 2669 scrollY = mScrollY; 2670 // We can be called for two different situations: during a draw, 2671 // to update the scroll position if the focus has changed (in which 2672 // case 'rectangle' is null), or in response to a 2673 // requestChildRectangleOnScreen() call (in which case 'rectangle' 2674 // is non-null and we just want to scroll to whatever that 2675 // rectangle is). 2676 final View focus = mView.findFocus(); 2677 if (focus == null) { 2678 return false; 2679 } 2680 View lastScrolledFocus = (mLastScrolledFocus != null) ? mLastScrolledFocus.get() : null; 2681 if (focus != lastScrolledFocus) { 2682 // If the focus has changed, then ignore any requests to scroll 2683 // to a rectangle; first we want to make sure the entire focus 2684 // view is visible. 2685 rectangle = null; 2686 } 2687 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Eval scroll: focus=" + focus 2688 + " rectangle=" + rectangle + " ci=" + ci 2689 + " vi=" + vi); 2690 if (focus == lastScrolledFocus && !mScrollMayChange && rectangle == null) { 2691 // Optimization: if the focus hasn't changed since last 2692 // time, and no layout has happened, then just leave things 2693 // as they are. 2694 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Keeping scroll y=" 2695 + mScrollY + " vi=" + vi.toShortString()); 2696 } else { 2697 // We need to determine if the currently focused view is 2698 // within the visible part of the window and, if not, apply 2699 // a pan so it can be seen. 2700 mLastScrolledFocus = new WeakReference<View>(focus); 2701 mScrollMayChange = false; 2702 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Need to scroll?"); 2703 // Try to find the rectangle from the focus view. 2704 if (focus.getGlobalVisibleRect(mVisRect, null)) { 2705 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Root w=" 2706 + mView.getWidth() + " h=" + mView.getHeight() 2707 + " ci=" + ci.toShortString() 2708 + " vi=" + vi.toShortString()); 2709 if (rectangle == null) { 2710 focus.getFocusedRect(mTempRect); 2711 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Focus " + focus 2712 + ": focusRect=" + mTempRect.toShortString()); 2713 if (mView instanceof ViewGroup) { 2714 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 2715 focus, mTempRect); 2716 } 2717 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2718 "Focus in window: focusRect=" 2719 + mTempRect.toShortString() 2720 + " visRect=" + mVisRect.toShortString()); 2721 } else { 2722 mTempRect.set(rectangle); 2723 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2724 "Request scroll to rect: " 2725 + mTempRect.toShortString() 2726 + " visRect=" + mVisRect.toShortString()); 2727 } 2728 if (mTempRect.intersect(mVisRect)) { 2729 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2730 "Focus window visible rect: " 2731 + mTempRect.toShortString()); 2732 if (mTempRect.height() > 2733 (mView.getHeight()-vi.top-vi.bottom)) { 2734 // If the focus simply is not going to fit, then 2735 // best is probably just to leave things as-is. 2736 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2737 "Too tall; leaving scrollY=" + scrollY); 2738 } else if ((mTempRect.top-scrollY) < vi.top) { 2739 scrollY -= vi.top - (mTempRect.top-scrollY); 2740 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2741 "Top covered; scrollY=" + scrollY); 2742 } else if ((mTempRect.bottom-scrollY) 2743 > (mView.getHeight()-vi.bottom)) { 2744 scrollY += (mTempRect.bottom-scrollY) 2745 - (mView.getHeight()-vi.bottom); 2746 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2747 "Bottom covered; scrollY=" + scrollY); 2748 } 2749 handled = true; 2750 } 2751 } 2752 } 2753 } 2754 2755 if (scrollY != mScrollY) { 2756 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Pan scroll changed: old=" 2757 + mScrollY + " , new=" + scrollY); 2758 if (!immediate && mResizeBuffer == null) { 2759 if (mScroller == null) { 2760 mScroller = new Scroller(mView.getContext()); 2761 } 2762 mScroller.startScroll(0, mScrollY, 0, scrollY-mScrollY); 2763 } else if (mScroller != null) { 2764 mScroller.abortAnimation(); 2765 } 2766 mScrollY = scrollY; 2767 } 2768 2769 return handled; 2770 } 2771 2772 /** 2773 * @hide 2774 */ 2775 public View getAccessibilityFocusedHost() { 2776 return mAccessibilityFocusedHost; 2777 } 2778 2779 /** 2780 * @hide 2781 */ 2782 public AccessibilityNodeInfo getAccessibilityFocusedVirtualView() { 2783 return mAccessibilityFocusedVirtualView; 2784 } 2785 2786 void setAccessibilityFocus(View view, AccessibilityNodeInfo node) { 2787 // If we have a virtual view with accessibility focus we need 2788 // to clear the focus and invalidate the virtual view bounds. 2789 if (mAccessibilityFocusedVirtualView != null) { 2790 2791 AccessibilityNodeInfo focusNode = mAccessibilityFocusedVirtualView; 2792 View focusHost = mAccessibilityFocusedHost; 2793 2794 // Wipe the state of the current accessibility focus since 2795 // the call into the provider to clear accessibility focus 2796 // will fire an accessibility event which will end up calling 2797 // this method and we want to have clean state when this 2798 // invocation happens. 2799 mAccessibilityFocusedHost = null; 2800 mAccessibilityFocusedVirtualView = null; 2801 2802 // Clear accessibility focus on the host after clearing state since 2803 // this method may be reentrant. 2804 focusHost.clearAccessibilityFocusNoCallbacks(); 2805 2806 AccessibilityNodeProvider provider = focusHost.getAccessibilityNodeProvider(); 2807 if (provider != null) { 2808 // Invalidate the area of the cleared accessibility focus. 2809 focusNode.getBoundsInParent(mTempRect); 2810 focusHost.invalidate(mTempRect); 2811 // Clear accessibility focus in the virtual node. 2812 final int virtualNodeId = AccessibilityNodeInfo.getVirtualDescendantId( 2813 focusNode.getSourceNodeId()); 2814 provider.performAction(virtualNodeId, 2815 AccessibilityNodeInfo.ACTION_CLEAR_ACCESSIBILITY_FOCUS, null); 2816 } 2817 focusNode.recycle(); 2818 } 2819 if (mAccessibilityFocusedHost != null) { 2820 // Clear accessibility focus in the view. 2821 mAccessibilityFocusedHost.clearAccessibilityFocusNoCallbacks(); 2822 } 2823 2824 // Set the new focus host and node. 2825 mAccessibilityFocusedHost = view; 2826 mAccessibilityFocusedVirtualView = node; 2827 2828 if (mAttachInfo.mHardwareRenderer != null) { 2829 mAttachInfo.mHardwareRenderer.invalidateRoot(); 2830 } 2831 } 2832 2833 @Override 2834 public void requestChildFocus(View child, View focused) { 2835 if (DEBUG_INPUT_RESIZE) { 2836 Log.v(TAG, "Request child focus: focus now " + focused); 2837 } 2838 checkThread(); 2839 scheduleTraversals(); 2840 } 2841 2842 @Override 2843 public void clearChildFocus(View child) { 2844 if (DEBUG_INPUT_RESIZE) { 2845 Log.v(TAG, "Clearing child focus"); 2846 } 2847 checkThread(); 2848 scheduleTraversals(); 2849 } 2850 2851 @Override 2852 public ViewParent getParentForAccessibility() { 2853 return null; 2854 } 2855 2856 @Override 2857 public void focusableViewAvailable(View v) { 2858 checkThread(); 2859 if (mView != null) { 2860 if (!mView.hasFocus()) { 2861 v.requestFocus(); 2862 } else { 2863 // the one case where will transfer focus away from the current one 2864 // is if the current view is a view group that prefers to give focus 2865 // to its children first AND the view is a descendant of it. 2866 View focused = mView.findFocus(); 2867 if (focused instanceof ViewGroup) { 2868 ViewGroup group = (ViewGroup) focused; 2869 if (group.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 2870 && isViewDescendantOf(v, focused)) { 2871 v.requestFocus(); 2872 } 2873 } 2874 } 2875 } 2876 } 2877 2878 @Override 2879 public void recomputeViewAttributes(View child) { 2880 checkThread(); 2881 if (mView == child) { 2882 mAttachInfo.mRecomputeGlobalAttributes = true; 2883 if (!mWillDrawSoon) { 2884 scheduleTraversals(); 2885 } 2886 } 2887 } 2888 2889 void dispatchDetachedFromWindow() { 2890 if (mView != null && mView.mAttachInfo != null) { 2891 mAttachInfo.mTreeObserver.dispatchOnWindowAttachedChange(false); 2892 mView.dispatchDetachedFromWindow(); 2893 } 2894 2895 mAccessibilityInteractionConnectionManager.ensureNoConnection(); 2896 mAccessibilityManager.removeAccessibilityStateChangeListener( 2897 mAccessibilityInteractionConnectionManager); 2898 mAccessibilityManager.removeHighTextContrastStateChangeListener( 2899 mHighContrastTextManager); 2900 removeSendWindowContentChangedCallback(); 2901 2902 destroyHardwareRenderer(); 2903 2904 setAccessibilityFocus(null, null); 2905 2906 mView.assignParent(null); 2907 mView = null; 2908 mAttachInfo.mRootView = null; 2909 2910 mSurface.release(); 2911 2912 if (mInputQueueCallback != null && mInputQueue != null) { 2913 mInputQueueCallback.onInputQueueDestroyed(mInputQueue); 2914 mInputQueue.dispose(); 2915 mInputQueueCallback = null; 2916 mInputQueue = null; 2917 } 2918 if (mInputEventReceiver != null) { 2919 mInputEventReceiver.dispose(); 2920 mInputEventReceiver = null; 2921 } 2922 try { 2923 mWindowSession.remove(mWindow); 2924 } catch (RemoteException e) { 2925 } 2926 2927 // Dispose the input channel after removing the window so the Window Manager 2928 // doesn't interpret the input channel being closed as an abnormal termination. 2929 if (mInputChannel != null) { 2930 mInputChannel.dispose(); 2931 mInputChannel = null; 2932 } 2933 2934 mDisplayManager.unregisterDisplayListener(mDisplayListener); 2935 2936 unscheduleTraversals(); 2937 } 2938 2939 void updateConfiguration(Configuration config, boolean force) { 2940 if (DEBUG_CONFIGURATION) Log.v(TAG, 2941 "Applying new config to window " 2942 + mWindowAttributes.getTitle() 2943 + ": " + config); 2944 2945 CompatibilityInfo ci = mDisplayAdjustments.getCompatibilityInfo(); 2946 if (!ci.equals(CompatibilityInfo.DEFAULT_COMPATIBILITY_INFO)) { 2947 config = new Configuration(config); 2948 ci.applyToConfiguration(mNoncompatDensity, config); 2949 } 2950 2951 synchronized (sConfigCallbacks) { 2952 for (int i=sConfigCallbacks.size()-1; i>=0; i--) { 2953 sConfigCallbacks.get(i).onConfigurationChanged(config); 2954 } 2955 } 2956 if (mView != null) { 2957 // At this point the resources have been updated to 2958 // have the most recent config, whatever that is. Use 2959 // the one in them which may be newer. 2960 config = mView.getResources().getConfiguration(); 2961 if (force || mLastConfiguration.diff(config) != 0) { 2962 final int lastLayoutDirection = mLastConfiguration.getLayoutDirection(); 2963 final int currentLayoutDirection = config.getLayoutDirection(); 2964 mLastConfiguration.setTo(config); 2965 if (lastLayoutDirection != currentLayoutDirection && 2966 mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 2967 mView.setLayoutDirection(currentLayoutDirection); 2968 } 2969 mView.dispatchConfigurationChanged(config); 2970 } 2971 } 2972 } 2973 2974 /** 2975 * Return true if child is an ancestor of parent, (or equal to the parent). 2976 */ 2977 public static boolean isViewDescendantOf(View child, View parent) { 2978 if (child == parent) { 2979 return true; 2980 } 2981 2982 final ViewParent theParent = child.getParent(); 2983 return (theParent instanceof ViewGroup) && isViewDescendantOf((View) theParent, parent); 2984 } 2985 2986 private static void forceLayout(View view) { 2987 view.forceLayout(); 2988 if (view instanceof ViewGroup) { 2989 ViewGroup group = (ViewGroup) view; 2990 final int count = group.getChildCount(); 2991 for (int i = 0; i < count; i++) { 2992 forceLayout(group.getChildAt(i)); 2993 } 2994 } 2995 } 2996 2997 private final static int MSG_INVALIDATE = 1; 2998 private final static int MSG_INVALIDATE_RECT = 2; 2999 private final static int MSG_DIE = 3; 3000 private final static int MSG_RESIZED = 4; 3001 private final static int MSG_RESIZED_REPORT = 5; 3002 private final static int MSG_WINDOW_FOCUS_CHANGED = 6; 3003 private final static int MSG_DISPATCH_INPUT_EVENT = 7; 3004 private final static int MSG_DISPATCH_APP_VISIBILITY = 8; 3005 private final static int MSG_DISPATCH_GET_NEW_SURFACE = 9; 3006 private final static int MSG_DISPATCH_KEY_FROM_IME = 11; 3007 private final static int MSG_FINISH_INPUT_CONNECTION = 12; 3008 private final static int MSG_CHECK_FOCUS = 13; 3009 private final static int MSG_CLOSE_SYSTEM_DIALOGS = 14; 3010 private final static int MSG_DISPATCH_DRAG_EVENT = 15; 3011 private final static int MSG_DISPATCH_DRAG_LOCATION_EVENT = 16; 3012 private final static int MSG_DISPATCH_SYSTEM_UI_VISIBILITY = 17; 3013 private final static int MSG_UPDATE_CONFIGURATION = 18; 3014 private final static int MSG_PROCESS_INPUT_EVENTS = 19; 3015 private final static int MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST = 21; 3016 private final static int MSG_DISPATCH_DONE_ANIMATING = 22; 3017 private final static int MSG_INVALIDATE_WORLD = 23; 3018 private final static int MSG_WINDOW_MOVED = 24; 3019 private final static int MSG_SYNTHESIZE_INPUT_EVENT = 25; 3020 3021 final class ViewRootHandler extends Handler { 3022 @Override 3023 public String getMessageName(Message message) { 3024 switch (message.what) { 3025 case MSG_INVALIDATE: 3026 return "MSG_INVALIDATE"; 3027 case MSG_INVALIDATE_RECT: 3028 return "MSG_INVALIDATE_RECT"; 3029 case MSG_DIE: 3030 return "MSG_DIE"; 3031 case MSG_RESIZED: 3032 return "MSG_RESIZED"; 3033 case MSG_RESIZED_REPORT: 3034 return "MSG_RESIZED_REPORT"; 3035 case MSG_WINDOW_FOCUS_CHANGED: 3036 return "MSG_WINDOW_FOCUS_CHANGED"; 3037 case MSG_DISPATCH_INPUT_EVENT: 3038 return "MSG_DISPATCH_INPUT_EVENT"; 3039 case MSG_DISPATCH_APP_VISIBILITY: 3040 return "MSG_DISPATCH_APP_VISIBILITY"; 3041 case MSG_DISPATCH_GET_NEW_SURFACE: 3042 return "MSG_DISPATCH_GET_NEW_SURFACE"; 3043 case MSG_DISPATCH_KEY_FROM_IME: 3044 return "MSG_DISPATCH_KEY_FROM_IME"; 3045 case MSG_FINISH_INPUT_CONNECTION: 3046 return "MSG_FINISH_INPUT_CONNECTION"; 3047 case MSG_CHECK_FOCUS: 3048 return "MSG_CHECK_FOCUS"; 3049 case MSG_CLOSE_SYSTEM_DIALOGS: 3050 return "MSG_CLOSE_SYSTEM_DIALOGS"; 3051 case MSG_DISPATCH_DRAG_EVENT: 3052 return "MSG_DISPATCH_DRAG_EVENT"; 3053 case MSG_DISPATCH_DRAG_LOCATION_EVENT: 3054 return "MSG_DISPATCH_DRAG_LOCATION_EVENT"; 3055 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: 3056 return "MSG_DISPATCH_SYSTEM_UI_VISIBILITY"; 3057 case MSG_UPDATE_CONFIGURATION: 3058 return "MSG_UPDATE_CONFIGURATION"; 3059 case MSG_PROCESS_INPUT_EVENTS: 3060 return "MSG_PROCESS_INPUT_EVENTS"; 3061 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: 3062 return "MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST"; 3063 case MSG_DISPATCH_DONE_ANIMATING: 3064 return "MSG_DISPATCH_DONE_ANIMATING"; 3065 case MSG_WINDOW_MOVED: 3066 return "MSG_WINDOW_MOVED"; 3067 case MSG_SYNTHESIZE_INPUT_EVENT: 3068 return "MSG_SYNTHESIZE_INPUT_EVENT"; 3069 } 3070 return super.getMessageName(message); 3071 } 3072 3073 @Override 3074 public void handleMessage(Message msg) { 3075 switch (msg.what) { 3076 case MSG_INVALIDATE: 3077 ((View) msg.obj).invalidate(); 3078 break; 3079 case MSG_INVALIDATE_RECT: 3080 final View.AttachInfo.InvalidateInfo info = (View.AttachInfo.InvalidateInfo) msg.obj; 3081 info.target.invalidate(info.left, info.top, info.right, info.bottom); 3082 info.recycle(); 3083 break; 3084 case MSG_PROCESS_INPUT_EVENTS: 3085 mProcessInputEventsScheduled = false; 3086 doProcessInputEvents(); 3087 break; 3088 case MSG_DISPATCH_APP_VISIBILITY: 3089 handleAppVisibility(msg.arg1 != 0); 3090 break; 3091 case MSG_DISPATCH_GET_NEW_SURFACE: 3092 handleGetNewSurface(); 3093 break; 3094 case MSG_RESIZED: { 3095 // Recycled in the fall through... 3096 SomeArgs args = (SomeArgs) msg.obj; 3097 if (mWinFrame.equals(args.arg1) 3098 && mPendingOverscanInsets.equals(args.arg5) 3099 && mPendingContentInsets.equals(args.arg2) 3100 && mPendingStableInsets.equals(args.arg6) 3101 && mPendingVisibleInsets.equals(args.arg3) 3102 && args.arg4 == null) { 3103 break; 3104 } 3105 } // fall through... 3106 case MSG_RESIZED_REPORT: 3107 if (mAdded) { 3108 SomeArgs args = (SomeArgs) msg.obj; 3109 3110 Configuration config = (Configuration) args.arg4; 3111 if (config != null) { 3112 updateConfiguration(config, false); 3113 } 3114 3115 mWinFrame.set((Rect) args.arg1); 3116 mPendingOverscanInsets.set((Rect) args.arg5); 3117 mPendingContentInsets.set((Rect) args.arg2); 3118 mPendingStableInsets.set((Rect) args.arg6); 3119 mPendingVisibleInsets.set((Rect) args.arg3); 3120 3121 args.recycle(); 3122 3123 if (msg.what == MSG_RESIZED_REPORT) { 3124 mReportNextDraw = true; 3125 } 3126 3127 if (mView != null) { 3128 forceLayout(mView); 3129 } 3130 3131 requestLayout(); 3132 } 3133 break; 3134 case MSG_WINDOW_MOVED: 3135 if (mAdded) { 3136 final int w = mWinFrame.width(); 3137 final int h = mWinFrame.height(); 3138 final int l = msg.arg1; 3139 final int t = msg.arg2; 3140 mWinFrame.left = l; 3141 mWinFrame.right = l + w; 3142 mWinFrame.top = t; 3143 mWinFrame.bottom = t + h; 3144 3145 if (mView != null) { 3146 forceLayout(mView); 3147 } 3148 requestLayout(); 3149 } 3150 break; 3151 case MSG_WINDOW_FOCUS_CHANGED: { 3152 if (mAdded) { 3153 boolean hasWindowFocus = msg.arg1 != 0; 3154 mAttachInfo.mHasWindowFocus = hasWindowFocus; 3155 3156 profileRendering(hasWindowFocus); 3157 3158 if (hasWindowFocus) { 3159 boolean inTouchMode = msg.arg2 != 0; 3160 ensureTouchModeLocally(inTouchMode); 3161 3162 if (mAttachInfo.mHardwareRenderer != null && mSurface.isValid()){ 3163 mFullRedrawNeeded = true; 3164 try { 3165 final WindowManager.LayoutParams lp = mWindowAttributes; 3166 final Rect surfaceInsets = lp != null ? lp.surfaceInsets : null; 3167 mAttachInfo.mHardwareRenderer.initializeIfNeeded( 3168 mWidth, mHeight, mSurface, surfaceInsets); 3169 } catch (OutOfResourcesException e) { 3170 Log.e(TAG, "OutOfResourcesException locking surface", e); 3171 try { 3172 if (!mWindowSession.outOfMemory(mWindow)) { 3173 Slog.w(TAG, "No processes killed for memory; killing self"); 3174 Process.killProcess(Process.myPid()); 3175 } 3176 } catch (RemoteException ex) { 3177 } 3178 // Retry in a bit. 3179 sendMessageDelayed(obtainMessage(msg.what, msg.arg1, msg.arg2), 500); 3180 return; 3181 } 3182 } 3183 } 3184 3185 mLastWasImTarget = WindowManager.LayoutParams 3186 .mayUseInputMethod(mWindowAttributes.flags); 3187 3188 InputMethodManager imm = InputMethodManager.peekInstance(); 3189 if (mView != null) { 3190 if (hasWindowFocus && imm != null && mLastWasImTarget && 3191 !isInLocalFocusMode()) { 3192 imm.startGettingWindowFocus(mView); 3193 } 3194 mAttachInfo.mKeyDispatchState.reset(); 3195 mView.dispatchWindowFocusChanged(hasWindowFocus); 3196 mAttachInfo.mTreeObserver.dispatchOnWindowFocusChange(hasWindowFocus); 3197 } 3198 3199 // Note: must be done after the focus change callbacks, 3200 // so all of the view state is set up correctly. 3201 if (hasWindowFocus) { 3202 if (imm != null && mLastWasImTarget && !isInLocalFocusMode()) { 3203 imm.onWindowFocus(mView, mView.findFocus(), 3204 mWindowAttributes.softInputMode, 3205 !mHasHadWindowFocus, mWindowAttributes.flags); 3206 } 3207 // Clear the forward bit. We can just do this directly, since 3208 // the window manager doesn't care about it. 3209 mWindowAttributes.softInputMode &= 3210 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3211 ((WindowManager.LayoutParams)mView.getLayoutParams()) 3212 .softInputMode &= 3213 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3214 mHasHadWindowFocus = true; 3215 } 3216 3217 if (mView != null && mAccessibilityManager.isEnabled()) { 3218 if (hasWindowFocus) { 3219 mView.sendAccessibilityEvent( 3220 AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 3221 } 3222 } 3223 } 3224 } break; 3225 case MSG_DIE: 3226 doDie(); 3227 break; 3228 case MSG_DISPATCH_INPUT_EVENT: { 3229 SomeArgs args = (SomeArgs)msg.obj; 3230 InputEvent event = (InputEvent)args.arg1; 3231 InputEventReceiver receiver = (InputEventReceiver)args.arg2; 3232 enqueueInputEvent(event, receiver, 0, true); 3233 args.recycle(); 3234 } break; 3235 case MSG_SYNTHESIZE_INPUT_EVENT: { 3236 InputEvent event = (InputEvent)msg.obj; 3237 enqueueInputEvent(event, null, QueuedInputEvent.FLAG_UNHANDLED, true); 3238 } break; 3239 case MSG_DISPATCH_KEY_FROM_IME: { 3240 if (LOCAL_LOGV) Log.v( 3241 TAG, "Dispatching key " 3242 + msg.obj + " from IME to " + mView); 3243 KeyEvent event = (KeyEvent)msg.obj; 3244 if ((event.getFlags()&KeyEvent.FLAG_FROM_SYSTEM) != 0) { 3245 // The IME is trying to say this event is from the 3246 // system! Bad bad bad! 3247 //noinspection UnusedAssignment 3248 event = KeyEvent.changeFlags(event, event.getFlags() & 3249 ~KeyEvent.FLAG_FROM_SYSTEM); 3250 } 3251 enqueueInputEvent(event, null, QueuedInputEvent.FLAG_DELIVER_POST_IME, true); 3252 } break; 3253 case MSG_FINISH_INPUT_CONNECTION: { 3254 InputMethodManager imm = InputMethodManager.peekInstance(); 3255 if (imm != null) { 3256 imm.reportFinishInputConnection((InputConnection)msg.obj); 3257 } 3258 } break; 3259 case MSG_CHECK_FOCUS: { 3260 InputMethodManager imm = InputMethodManager.peekInstance(); 3261 if (imm != null) { 3262 imm.checkFocus(); 3263 } 3264 } break; 3265 case MSG_CLOSE_SYSTEM_DIALOGS: { 3266 if (mView != null) { 3267 mView.onCloseSystemDialogs((String)msg.obj); 3268 } 3269 } break; 3270 case MSG_DISPATCH_DRAG_EVENT: 3271 case MSG_DISPATCH_DRAG_LOCATION_EVENT: { 3272 DragEvent event = (DragEvent)msg.obj; 3273 event.mLocalState = mLocalDragState; // only present when this app called startDrag() 3274 handleDragEvent(event); 3275 } break; 3276 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: { 3277 handleDispatchSystemUiVisibilityChanged((SystemUiVisibilityInfo) msg.obj); 3278 } break; 3279 case MSG_UPDATE_CONFIGURATION: { 3280 Configuration config = (Configuration)msg.obj; 3281 if (config.isOtherSeqNewer(mLastConfiguration)) { 3282 config = mLastConfiguration; 3283 } 3284 updateConfiguration(config, false); 3285 } break; 3286 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: { 3287 setAccessibilityFocus(null, null); 3288 } break; 3289 case MSG_DISPATCH_DONE_ANIMATING: { 3290 handleDispatchDoneAnimating(); 3291 } break; 3292 case MSG_INVALIDATE_WORLD: { 3293 if (mView != null) { 3294 invalidateWorld(mView); 3295 } 3296 } break; 3297 } 3298 } 3299 } 3300 3301 final ViewRootHandler mHandler = new ViewRootHandler(); 3302 3303 /** 3304 * Something in the current window tells us we need to change the touch mode. For 3305 * example, we are not in touch mode, and the user touches the screen. 3306 * 3307 * If the touch mode has changed, tell the window manager, and handle it locally. 3308 * 3309 * @param inTouchMode Whether we want to be in touch mode. 3310 * @return True if the touch mode changed and focus changed was changed as a result 3311 */ 3312 boolean ensureTouchMode(boolean inTouchMode) { 3313 if (DBG) Log.d("touchmode", "ensureTouchMode(" + inTouchMode + "), current " 3314 + "touch mode is " + mAttachInfo.mInTouchMode); 3315 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3316 3317 // tell the window manager 3318 try { 3319 if (!isInLocalFocusMode()) { 3320 mWindowSession.setInTouchMode(inTouchMode); 3321 } 3322 } catch (RemoteException e) { 3323 throw new RuntimeException(e); 3324 } 3325 3326 // handle the change 3327 return ensureTouchModeLocally(inTouchMode); 3328 } 3329 3330 /** 3331 * Ensure that the touch mode for this window is set, and if it is changing, 3332 * take the appropriate action. 3333 * @param inTouchMode Whether we want to be in touch mode. 3334 * @return True if the touch mode changed and focus changed was changed as a result 3335 */ 3336 private boolean ensureTouchModeLocally(boolean inTouchMode) { 3337 if (DBG) Log.d("touchmode", "ensureTouchModeLocally(" + inTouchMode + "), current " 3338 + "touch mode is " + mAttachInfo.mInTouchMode); 3339 3340 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3341 3342 mAttachInfo.mInTouchMode = inTouchMode; 3343 mAttachInfo.mTreeObserver.dispatchOnTouchModeChanged(inTouchMode); 3344 3345 return (inTouchMode) ? enterTouchMode() : leaveTouchMode(); 3346 } 3347 3348 private boolean enterTouchMode() { 3349 if (mView != null && mView.hasFocus()) { 3350 // note: not relying on mFocusedView here because this could 3351 // be when the window is first being added, and mFocused isn't 3352 // set yet. 3353 final View focused = mView.findFocus(); 3354 if (focused != null && !focused.isFocusableInTouchMode()) { 3355 final ViewGroup ancestorToTakeFocus = findAncestorToTakeFocusInTouchMode(focused); 3356 if (ancestorToTakeFocus != null) { 3357 // there is an ancestor that wants focus after its 3358 // descendants that is focusable in touch mode.. give it 3359 // focus 3360 return ancestorToTakeFocus.requestFocus(); 3361 } else { 3362 // There's nothing to focus. Clear and propagate through the 3363 // hierarchy, but don't attempt to place new focus. 3364 focused.clearFocusInternal(null, true, false); 3365 return true; 3366 } 3367 } 3368 } 3369 return false; 3370 } 3371 3372 /** 3373 * Find an ancestor of focused that wants focus after its descendants and is 3374 * focusable in touch mode. 3375 * @param focused The currently focused view. 3376 * @return An appropriate view, or null if no such view exists. 3377 */ 3378 private static ViewGroup findAncestorToTakeFocusInTouchMode(View focused) { 3379 ViewParent parent = focused.getParent(); 3380 while (parent instanceof ViewGroup) { 3381 final ViewGroup vgParent = (ViewGroup) parent; 3382 if (vgParent.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 3383 && vgParent.isFocusableInTouchMode()) { 3384 return vgParent; 3385 } 3386 if (vgParent.isRootNamespace()) { 3387 return null; 3388 } else { 3389 parent = vgParent.getParent(); 3390 } 3391 } 3392 return null; 3393 } 3394 3395 private boolean leaveTouchMode() { 3396 if (mView != null) { 3397 if (mView.hasFocus()) { 3398 View focusedView = mView.findFocus(); 3399 if (!(focusedView instanceof ViewGroup)) { 3400 // some view has focus, let it keep it 3401 return false; 3402 } else if (((ViewGroup) focusedView).getDescendantFocusability() != 3403 ViewGroup.FOCUS_AFTER_DESCENDANTS) { 3404 // some view group has focus, and doesn't prefer its children 3405 // over itself for focus, so let them keep it. 3406 return false; 3407 } 3408 } 3409 3410 // find the best view to give focus to in this brave new non-touch-mode 3411 // world 3412 final View focused = focusSearch(null, View.FOCUS_DOWN); 3413 if (focused != null) { 3414 return focused.requestFocus(View.FOCUS_DOWN); 3415 } 3416 } 3417 return false; 3418 } 3419 3420 /** 3421 * Base class for implementing a stage in the chain of responsibility 3422 * for processing input events. 3423 * <p> 3424 * Events are delivered to the stage by the {@link #deliver} method. The stage 3425 * then has the choice of finishing the event or forwarding it to the next stage. 3426 * </p> 3427 */ 3428 abstract class InputStage { 3429 private final InputStage mNext; 3430 3431 protected static final int FORWARD = 0; 3432 protected static final int FINISH_HANDLED = 1; 3433 protected static final int FINISH_NOT_HANDLED = 2; 3434 3435 /** 3436 * Creates an input stage. 3437 * @param next The next stage to which events should be forwarded. 3438 */ 3439 public InputStage(InputStage next) { 3440 mNext = next; 3441 } 3442 3443 /** 3444 * Delivers an event to be processed. 3445 */ 3446 public final void deliver(QueuedInputEvent q) { 3447 if ((q.mFlags & QueuedInputEvent.FLAG_FINISHED) != 0) { 3448 forward(q); 3449 } else if (shouldDropInputEvent(q)) { 3450 finish(q, false); 3451 } else { 3452 apply(q, onProcess(q)); 3453 } 3454 } 3455 3456 /** 3457 * Marks the the input event as finished then forwards it to the next stage. 3458 */ 3459 protected void finish(QueuedInputEvent q, boolean handled) { 3460 q.mFlags |= QueuedInputEvent.FLAG_FINISHED; 3461 if (handled) { 3462 q.mFlags |= QueuedInputEvent.FLAG_FINISHED_HANDLED; 3463 } 3464 forward(q); 3465 } 3466 3467 /** 3468 * Forwards the event to the next stage. 3469 */ 3470 protected void forward(QueuedInputEvent q) { 3471 onDeliverToNext(q); 3472 } 3473 3474 /** 3475 * Applies a result code from {@link #onProcess} to the specified event. 3476 */ 3477 protected void apply(QueuedInputEvent q, int result) { 3478 if (result == FORWARD) { 3479 forward(q); 3480 } else if (result == FINISH_HANDLED) { 3481 finish(q, true); 3482 } else if (result == FINISH_NOT_HANDLED) { 3483 finish(q, false); 3484 } else { 3485 throw new IllegalArgumentException("Invalid result: " + result); 3486 } 3487 } 3488 3489 /** 3490 * Called when an event is ready to be processed. 3491 * @return A result code indicating how the event was handled. 3492 */ 3493 protected int onProcess(QueuedInputEvent q) { 3494 return FORWARD; 3495 } 3496 3497 /** 3498 * Called when an event is being delivered to the next stage. 3499 */ 3500 protected void onDeliverToNext(QueuedInputEvent q) { 3501 if (DEBUG_INPUT_STAGES) { 3502 Log.v(TAG, "Done with " + getClass().getSimpleName() + ". " + q); 3503 } 3504 if (mNext != null) { 3505 mNext.deliver(q); 3506 } else { 3507 finishInputEvent(q); 3508 } 3509 } 3510 3511 protected boolean shouldDropInputEvent(QueuedInputEvent q) { 3512 if (mView == null || !mAdded) { 3513 Slog.w(TAG, "Dropping event due to root view being removed: " + q.mEvent); 3514 return true; 3515 } else if (!mAttachInfo.mHasWindowFocus && 3516 !q.mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER) && 3517 !isTerminalInputEvent(q.mEvent)) { 3518 // If this is a focused event and the window doesn't currently have input focus, 3519 // then drop this event. This could be an event that came back from the previous 3520 // stage but the window has lost focus in the meantime. 3521 Slog.w(TAG, "Dropping event due to no window focus: " + q.mEvent); 3522 return true; 3523 } 3524 return false; 3525 } 3526 3527 void dump(String prefix, PrintWriter writer) { 3528 if (mNext != null) { 3529 mNext.dump(prefix, writer); 3530 } 3531 } 3532 } 3533 3534 /** 3535 * Base class for implementing an input pipeline stage that supports 3536 * asynchronous and out-of-order processing of input events. 3537 * <p> 3538 * In addition to what a normal input stage can do, an asynchronous 3539 * input stage may also defer an input event that has been delivered to it 3540 * and finish or forward it later. 3541 * </p> 3542 */ 3543 abstract class AsyncInputStage extends InputStage { 3544 private final String mTraceCounter; 3545 3546 private QueuedInputEvent mQueueHead; 3547 private QueuedInputEvent mQueueTail; 3548 private int mQueueLength; 3549 3550 protected static final int DEFER = 3; 3551 3552 /** 3553 * Creates an asynchronous input stage. 3554 * @param next The next stage to which events should be forwarded. 3555 * @param traceCounter The name of a counter to record the size of 3556 * the queue of pending events. 3557 */ 3558 public AsyncInputStage(InputStage next, String traceCounter) { 3559 super(next); 3560 mTraceCounter = traceCounter; 3561 } 3562 3563 /** 3564 * Marks the event as deferred, which is to say that it will be handled 3565 * asynchronously. The caller is responsible for calling {@link #forward} 3566 * or {@link #finish} later when it is done handling the event. 3567 */ 3568 protected void defer(QueuedInputEvent q) { 3569 q.mFlags |= QueuedInputEvent.FLAG_DEFERRED; 3570 enqueue(q); 3571 } 3572 3573 @Override 3574 protected void forward(QueuedInputEvent q) { 3575 // Clear the deferred flag. 3576 q.mFlags &= ~QueuedInputEvent.FLAG_DEFERRED; 3577 3578 // Fast path if the queue is empty. 3579 QueuedInputEvent curr = mQueueHead; 3580 if (curr == null) { 3581 super.forward(q); 3582 return; 3583 } 3584 3585 // Determine whether the event must be serialized behind any others 3586 // before it can be delivered to the next stage. This is done because 3587 // deferred events might be handled out of order by the stage. 3588 final int deviceId = q.mEvent.getDeviceId(); 3589 QueuedInputEvent prev = null; 3590 boolean blocked = false; 3591 while (curr != null && curr != q) { 3592 if (!blocked && deviceId == curr.mEvent.getDeviceId()) { 3593 blocked = true; 3594 } 3595 prev = curr; 3596 curr = curr.mNext; 3597 } 3598 3599 // If the event is blocked, then leave it in the queue to be delivered later. 3600 // Note that the event might not yet be in the queue if it was not previously 3601 // deferred so we will enqueue it if needed. 3602 if (blocked) { 3603 if (curr == null) { 3604 enqueue(q); 3605 } 3606 return; 3607 } 3608 3609 // The event is not blocked. Deliver it immediately. 3610 if (curr != null) { 3611 curr = curr.mNext; 3612 dequeue(q, prev); 3613 } 3614 super.forward(q); 3615 3616 // Dequeuing this event may have unblocked successors. Deliver them. 3617 while (curr != null) { 3618 if (deviceId == curr.mEvent.getDeviceId()) { 3619 if ((curr.mFlags & QueuedInputEvent.FLAG_DEFERRED) != 0) { 3620 break; 3621 } 3622 QueuedInputEvent next = curr.mNext; 3623 dequeue(curr, prev); 3624 super.forward(curr); 3625 curr = next; 3626 } else { 3627 prev = curr; 3628 curr = curr.mNext; 3629 } 3630 } 3631 } 3632 3633 @Override 3634 protected void apply(QueuedInputEvent q, int result) { 3635 if (result == DEFER) { 3636 defer(q); 3637 } else { 3638 super.apply(q, result); 3639 } 3640 } 3641 3642 private void enqueue(QueuedInputEvent q) { 3643 if (mQueueTail == null) { 3644 mQueueHead = q; 3645 mQueueTail = q; 3646 } else { 3647 mQueueTail.mNext = q; 3648 mQueueTail = q; 3649 } 3650 3651 mQueueLength += 1; 3652 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 3653 } 3654 3655 private void dequeue(QueuedInputEvent q, QueuedInputEvent prev) { 3656 if (prev == null) { 3657 mQueueHead = q.mNext; 3658 } else { 3659 prev.mNext = q.mNext; 3660 } 3661 if (mQueueTail == q) { 3662 mQueueTail = prev; 3663 } 3664 q.mNext = null; 3665 3666 mQueueLength -= 1; 3667 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 3668 } 3669 3670 @Override 3671 void dump(String prefix, PrintWriter writer) { 3672 writer.print(prefix); 3673 writer.print(getClass().getName()); 3674 writer.print(": mQueueLength="); 3675 writer.println(mQueueLength); 3676 3677 super.dump(prefix, writer); 3678 } 3679 } 3680 3681 /** 3682 * Delivers pre-ime input events to a native activity. 3683 * Does not support pointer events. 3684 */ 3685 final class NativePreImeInputStage extends AsyncInputStage 3686 implements InputQueue.FinishedInputEventCallback { 3687 public NativePreImeInputStage(InputStage next, String traceCounter) { 3688 super(next, traceCounter); 3689 } 3690 3691 @Override 3692 protected int onProcess(QueuedInputEvent q) { 3693 if (mInputQueue != null && q.mEvent instanceof KeyEvent) { 3694 mInputQueue.sendInputEvent(q.mEvent, q, true, this); 3695 return DEFER; 3696 } 3697 return FORWARD; 3698 } 3699 3700 @Override 3701 public void onFinishedInputEvent(Object token, boolean handled) { 3702 QueuedInputEvent q = (QueuedInputEvent)token; 3703 if (handled) { 3704 finish(q, true); 3705 return; 3706 } 3707 forward(q); 3708 } 3709 } 3710 3711 /** 3712 * Delivers pre-ime input events to the view hierarchy. 3713 * Does not support pointer events. 3714 */ 3715 final class ViewPreImeInputStage extends InputStage { 3716 public ViewPreImeInputStage(InputStage next) { 3717 super(next); 3718 } 3719 3720 @Override 3721 protected int onProcess(QueuedInputEvent q) { 3722 if (q.mEvent instanceof KeyEvent) { 3723 return processKeyEvent(q); 3724 } 3725 return FORWARD; 3726 } 3727 3728 private int processKeyEvent(QueuedInputEvent q) { 3729 final KeyEvent event = (KeyEvent)q.mEvent; 3730 if (mView.dispatchKeyEventPreIme(event)) { 3731 return FINISH_HANDLED; 3732 } 3733 return FORWARD; 3734 } 3735 } 3736 3737 /** 3738 * Delivers input events to the ime. 3739 * Does not support pointer events. 3740 */ 3741 final class ImeInputStage extends AsyncInputStage 3742 implements InputMethodManager.FinishedInputEventCallback { 3743 public ImeInputStage(InputStage next, String traceCounter) { 3744 super(next, traceCounter); 3745 } 3746 3747 @Override 3748 protected int onProcess(QueuedInputEvent q) { 3749 if (mLastWasImTarget && !isInLocalFocusMode()) { 3750 InputMethodManager imm = InputMethodManager.peekInstance(); 3751 if (imm != null) { 3752 final InputEvent event = q.mEvent; 3753 if (DEBUG_IMF) Log.v(TAG, "Sending input event to IME: " + event); 3754 int result = imm.dispatchInputEvent(event, q, this, mHandler); 3755 if (result == InputMethodManager.DISPATCH_HANDLED) { 3756 return FINISH_HANDLED; 3757 } else if (result == InputMethodManager.DISPATCH_NOT_HANDLED) { 3758 // The IME could not handle it, so skip along to the next InputStage 3759 return FORWARD; 3760 } else { 3761 return DEFER; // callback will be invoked later 3762 } 3763 } 3764 } 3765 return FORWARD; 3766 } 3767 3768 @Override 3769 public void onFinishedInputEvent(Object token, boolean handled) { 3770 QueuedInputEvent q = (QueuedInputEvent)token; 3771 if (handled) { 3772 finish(q, true); 3773 return; 3774 } 3775 forward(q); 3776 } 3777 } 3778 3779 /** 3780 * Performs early processing of post-ime input events. 3781 */ 3782 final class EarlyPostImeInputStage extends InputStage { 3783 public EarlyPostImeInputStage(InputStage next) { 3784 super(next); 3785 } 3786 3787 @Override 3788 protected int onProcess(QueuedInputEvent q) { 3789 if (q.mEvent instanceof KeyEvent) { 3790 return processKeyEvent(q); 3791 } else { 3792 final int source = q.mEvent.getSource(); 3793 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 3794 return processPointerEvent(q); 3795 } 3796 } 3797 return FORWARD; 3798 } 3799 3800 private int processKeyEvent(QueuedInputEvent q) { 3801 final KeyEvent event = (KeyEvent)q.mEvent; 3802 3803 // If the key's purpose is to exit touch mode then we consume it 3804 // and consider it handled. 3805 if (checkForLeavingTouchModeAndConsume(event)) { 3806 return FINISH_HANDLED; 3807 } 3808 3809 // Make sure the fallback event policy sees all keys that will be 3810 // delivered to the view hierarchy. 3811 mFallbackEventHandler.preDispatchKeyEvent(event); 3812 return FORWARD; 3813 } 3814 3815 private int processPointerEvent(QueuedInputEvent q) { 3816 final MotionEvent event = (MotionEvent)q.mEvent; 3817 3818 // Translate the pointer event for compatibility, if needed. 3819 if (mTranslator != null) { 3820 mTranslator.translateEventInScreenToAppWindow(event); 3821 } 3822 3823 // Enter touch mode on down or scroll. 3824 final int action = event.getAction(); 3825 if (action == MotionEvent.ACTION_DOWN || action == MotionEvent.ACTION_SCROLL) { 3826 ensureTouchMode(true); 3827 } 3828 3829 // Offset the scroll position. 3830 if (mCurScrollY != 0) { 3831 event.offsetLocation(0, mCurScrollY); 3832 } 3833 3834 // Remember the touch position for possible drag-initiation. 3835 if (event.isTouchEvent()) { 3836 mLastTouchPoint.x = event.getRawX(); 3837 mLastTouchPoint.y = event.getRawY(); 3838 } 3839 return FORWARD; 3840 } 3841 } 3842 3843 /** 3844 * Delivers post-ime input events to a native activity. 3845 */ 3846 final class NativePostImeInputStage extends AsyncInputStage 3847 implements InputQueue.FinishedInputEventCallback { 3848 public NativePostImeInputStage(InputStage next, String traceCounter) { 3849 super(next, traceCounter); 3850 } 3851 3852 @Override 3853 protected int onProcess(QueuedInputEvent q) { 3854 if (mInputQueue != null) { 3855 mInputQueue.sendInputEvent(q.mEvent, q, false, this); 3856 return DEFER; 3857 } 3858 return FORWARD; 3859 } 3860 3861 @Override 3862 public void onFinishedInputEvent(Object token, boolean handled) { 3863 QueuedInputEvent q = (QueuedInputEvent)token; 3864 if (handled) { 3865 finish(q, true); 3866 return; 3867 } 3868 forward(q); 3869 } 3870 } 3871 3872 /** 3873 * Delivers post-ime input events to the view hierarchy. 3874 */ 3875 final class ViewPostImeInputStage extends InputStage { 3876 public ViewPostImeInputStage(InputStage next) { 3877 super(next); 3878 } 3879 3880 @Override 3881 protected int onProcess(QueuedInputEvent q) { 3882 if (q.mEvent instanceof KeyEvent) { 3883 return processKeyEvent(q); 3884 } else { 3885 // If delivering a new non-key event, make sure the window is 3886 // now allowed to start updating. 3887 handleDispatchDoneAnimating(); 3888 final int source = q.mEvent.getSource(); 3889 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 3890 return processPointerEvent(q); 3891 } else if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 3892 return processTrackballEvent(q); 3893 } else { 3894 return processGenericMotionEvent(q); 3895 } 3896 } 3897 } 3898 3899 @Override 3900 protected void onDeliverToNext(QueuedInputEvent q) { 3901 if (mUnbufferedInputDispatch 3902 && q.mEvent instanceof MotionEvent 3903 && ((MotionEvent)q.mEvent).isTouchEvent() 3904 && isTerminalInputEvent(q.mEvent)) { 3905 mUnbufferedInputDispatch = false; 3906 scheduleConsumeBatchedInput(); 3907 } 3908 super.onDeliverToNext(q); 3909 } 3910 3911 private int processKeyEvent(QueuedInputEvent q) { 3912 final KeyEvent event = (KeyEvent)q.mEvent; 3913 3914 if (event.getAction() != KeyEvent.ACTION_UP) { 3915 // If delivering a new key event, make sure the window is 3916 // now allowed to start updating. 3917 handleDispatchDoneAnimating(); 3918 } 3919 3920 // Deliver the key to the view hierarchy. 3921 if (mView.dispatchKeyEvent(event)) { 3922 return FINISH_HANDLED; 3923 } 3924 3925 if (shouldDropInputEvent(q)) { 3926 return FINISH_NOT_HANDLED; 3927 } 3928 3929 // If the Control modifier is held, try to interpret the key as a shortcut. 3930 if (event.getAction() == KeyEvent.ACTION_DOWN 3931 && event.isCtrlPressed() 3932 && event.getRepeatCount() == 0 3933 && !KeyEvent.isModifierKey(event.getKeyCode())) { 3934 if (mView.dispatchKeyShortcutEvent(event)) { 3935 return FINISH_HANDLED; 3936 } 3937 if (shouldDropInputEvent(q)) { 3938 return FINISH_NOT_HANDLED; 3939 } 3940 } 3941 3942 // Apply the fallback event policy. 3943 if (mFallbackEventHandler.dispatchKeyEvent(event)) { 3944 return FINISH_HANDLED; 3945 } 3946 if (shouldDropInputEvent(q)) { 3947 return FINISH_NOT_HANDLED; 3948 } 3949 3950 // Handle automatic focus changes. 3951 if (event.getAction() == KeyEvent.ACTION_DOWN) { 3952 int direction = 0; 3953 switch (event.getKeyCode()) { 3954 case KeyEvent.KEYCODE_DPAD_LEFT: 3955 if (event.hasNoModifiers()) { 3956 direction = View.FOCUS_LEFT; 3957 } 3958 break; 3959 case KeyEvent.KEYCODE_DPAD_RIGHT: 3960 if (event.hasNoModifiers()) { 3961 direction = View.FOCUS_RIGHT; 3962 } 3963 break; 3964 case KeyEvent.KEYCODE_DPAD_UP: 3965 if (event.hasNoModifiers()) { 3966 direction = View.FOCUS_UP; 3967 } 3968 break; 3969 case KeyEvent.KEYCODE_DPAD_DOWN: 3970 if (event.hasNoModifiers()) { 3971 direction = View.FOCUS_DOWN; 3972 } 3973 break; 3974 case KeyEvent.KEYCODE_TAB: 3975 if (event.hasNoModifiers()) { 3976 direction = View.FOCUS_FORWARD; 3977 } else if (event.hasModifiers(KeyEvent.META_SHIFT_ON)) { 3978 direction = View.FOCUS_BACKWARD; 3979 } 3980 break; 3981 } 3982 if (direction != 0) { 3983 View focused = mView.findFocus(); 3984 if (focused != null) { 3985 View v = focused.focusSearch(direction); 3986 if (v != null && v != focused) { 3987 // do the math the get the interesting rect 3988 // of previous focused into the coord system of 3989 // newly focused view 3990 focused.getFocusedRect(mTempRect); 3991 if (mView instanceof ViewGroup) { 3992 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 3993 focused, mTempRect); 3994 ((ViewGroup) mView).offsetRectIntoDescendantCoords( 3995 v, mTempRect); 3996 } 3997 if (v.requestFocus(direction, mTempRect)) { 3998 playSoundEffect(SoundEffectConstants 3999 .getContantForFocusDirection(direction)); 4000 return FINISH_HANDLED; 4001 } 4002 } 4003 4004 // Give the focused view a last chance to handle the dpad key. 4005 if (mView.dispatchUnhandledMove(focused, direction)) { 4006 return FINISH_HANDLED; 4007 } 4008 } else { 4009 // find the best view to give focus to in this non-touch-mode with no-focus 4010 View v = focusSearch(null, direction); 4011 if (v != null && v.requestFocus(direction)) { 4012 return FINISH_HANDLED; 4013 } 4014 } 4015 } 4016 } 4017 return FORWARD; 4018 } 4019 4020 private int processPointerEvent(QueuedInputEvent q) { 4021 final MotionEvent event = (MotionEvent)q.mEvent; 4022 4023 mAttachInfo.mUnbufferedDispatchRequested = false; 4024 boolean handled = mView.dispatchPointerEvent(event); 4025 if (mAttachInfo.mUnbufferedDispatchRequested && !mUnbufferedInputDispatch) { 4026 mUnbufferedInputDispatch = true; 4027 if (mConsumeBatchedInputScheduled) { 4028 scheduleConsumeBatchedInputImmediately(); 4029 } 4030 } 4031 return handled ? FINISH_HANDLED : FORWARD; 4032 } 4033 4034 private int processTrackballEvent(QueuedInputEvent q) { 4035 final MotionEvent event = (MotionEvent)q.mEvent; 4036 4037 if (mView.dispatchTrackballEvent(event)) { 4038 return FINISH_HANDLED; 4039 } 4040 return FORWARD; 4041 } 4042 4043 private int processGenericMotionEvent(QueuedInputEvent q) { 4044 final MotionEvent event = (MotionEvent)q.mEvent; 4045 4046 // Deliver the event to the view. 4047 if (mView.dispatchGenericMotionEvent(event)) { 4048 return FINISH_HANDLED; 4049 } 4050 return FORWARD; 4051 } 4052 } 4053 4054 /** 4055 * Performs synthesis of new input events from unhandled input events. 4056 */ 4057 final class SyntheticInputStage extends InputStage { 4058 private final SyntheticTrackballHandler mTrackball = new SyntheticTrackballHandler(); 4059 private final SyntheticJoystickHandler mJoystick = new SyntheticJoystickHandler(); 4060 private final SyntheticTouchNavigationHandler mTouchNavigation = 4061 new SyntheticTouchNavigationHandler(); 4062 private final SyntheticKeyboardHandler mKeyboard = new SyntheticKeyboardHandler(); 4063 4064 public SyntheticInputStage() { 4065 super(null); 4066 } 4067 4068 @Override 4069 protected int onProcess(QueuedInputEvent q) { 4070 q.mFlags |= QueuedInputEvent.FLAG_RESYNTHESIZED; 4071 if (q.mEvent instanceof MotionEvent) { 4072 final MotionEvent event = (MotionEvent)q.mEvent; 4073 final int source = event.getSource(); 4074 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 4075 mTrackball.process(event); 4076 return FINISH_HANDLED; 4077 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 4078 mJoystick.process(event); 4079 return FINISH_HANDLED; 4080 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 4081 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 4082 mTouchNavigation.process(event); 4083 return FINISH_HANDLED; 4084 } 4085 } else if ((q.mFlags & QueuedInputEvent.FLAG_UNHANDLED) != 0) { 4086 mKeyboard.process((KeyEvent)q.mEvent); 4087 return FINISH_HANDLED; 4088 } 4089 4090 return FORWARD; 4091 } 4092 4093 @Override 4094 protected void onDeliverToNext(QueuedInputEvent q) { 4095 if ((q.mFlags & QueuedInputEvent.FLAG_RESYNTHESIZED) == 0) { 4096 // Cancel related synthetic events if any prior stage has handled the event. 4097 if (q.mEvent instanceof MotionEvent) { 4098 final MotionEvent event = (MotionEvent)q.mEvent; 4099 final int source = event.getSource(); 4100 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 4101 mTrackball.cancel(event); 4102 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 4103 mJoystick.cancel(event); 4104 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 4105 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 4106 mTouchNavigation.cancel(event); 4107 } 4108 } 4109 } 4110 super.onDeliverToNext(q); 4111 } 4112 } 4113 4114 /** 4115 * Creates dpad events from unhandled trackball movements. 4116 */ 4117 final class SyntheticTrackballHandler { 4118 private final TrackballAxis mX = new TrackballAxis(); 4119 private final TrackballAxis mY = new TrackballAxis(); 4120 private long mLastTime; 4121 4122 public void process(MotionEvent event) { 4123 // Translate the trackball event into DPAD keys and try to deliver those. 4124 long curTime = SystemClock.uptimeMillis(); 4125 if ((mLastTime + MAX_TRACKBALL_DELAY) < curTime) { 4126 // It has been too long since the last movement, 4127 // so restart at the beginning. 4128 mX.reset(0); 4129 mY.reset(0); 4130 mLastTime = curTime; 4131 } 4132 4133 final int action = event.getAction(); 4134 final int metaState = event.getMetaState(); 4135 switch (action) { 4136 case MotionEvent.ACTION_DOWN: 4137 mX.reset(2); 4138 mY.reset(2); 4139 enqueueInputEvent(new KeyEvent(curTime, curTime, 4140 KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 4141 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4142 InputDevice.SOURCE_KEYBOARD)); 4143 break; 4144 case MotionEvent.ACTION_UP: 4145 mX.reset(2); 4146 mY.reset(2); 4147 enqueueInputEvent(new KeyEvent(curTime, curTime, 4148 KeyEvent.ACTION_UP, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 4149 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4150 InputDevice.SOURCE_KEYBOARD)); 4151 break; 4152 } 4153 4154 if (DEBUG_TRACKBALL) Log.v(TAG, "TB X=" + mX.position + " step=" 4155 + mX.step + " dir=" + mX.dir + " acc=" + mX.acceleration 4156 + " move=" + event.getX() 4157 + " / Y=" + mY.position + " step=" 4158 + mY.step + " dir=" + mY.dir + " acc=" + mY.acceleration 4159 + " move=" + event.getY()); 4160 final float xOff = mX.collect(event.getX(), event.getEventTime(), "X"); 4161 final float yOff = mY.collect(event.getY(), event.getEventTime(), "Y"); 4162 4163 // Generate DPAD events based on the trackball movement. 4164 // We pick the axis that has moved the most as the direction of 4165 // the DPAD. When we generate DPAD events for one axis, then the 4166 // other axis is reset -- we don't want to perform DPAD jumps due 4167 // to slight movements in the trackball when making major movements 4168 // along the other axis. 4169 int keycode = 0; 4170 int movement = 0; 4171 float accel = 1; 4172 if (xOff > yOff) { 4173 movement = mX.generate(); 4174 if (movement != 0) { 4175 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_RIGHT 4176 : KeyEvent.KEYCODE_DPAD_LEFT; 4177 accel = mX.acceleration; 4178 mY.reset(2); 4179 } 4180 } else if (yOff > 0) { 4181 movement = mY.generate(); 4182 if (movement != 0) { 4183 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_DOWN 4184 : KeyEvent.KEYCODE_DPAD_UP; 4185 accel = mY.acceleration; 4186 mX.reset(2); 4187 } 4188 } 4189 4190 if (keycode != 0) { 4191 if (movement < 0) movement = -movement; 4192 int accelMovement = (int)(movement * accel); 4193 if (DEBUG_TRACKBALL) Log.v(TAG, "Move: movement=" + movement 4194 + " accelMovement=" + accelMovement 4195 + " accel=" + accel); 4196 if (accelMovement > movement) { 4197 if (DEBUG_TRACKBALL) Log.v(TAG, "Delivering fake DPAD: " 4198 + keycode); 4199 movement--; 4200 int repeatCount = accelMovement - movement; 4201 enqueueInputEvent(new KeyEvent(curTime, curTime, 4202 KeyEvent.ACTION_MULTIPLE, keycode, repeatCount, metaState, 4203 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4204 InputDevice.SOURCE_KEYBOARD)); 4205 } 4206 while (movement > 0) { 4207 if (DEBUG_TRACKBALL) Log.v(TAG, "Delivering fake DPAD: " 4208 + keycode); 4209 movement--; 4210 curTime = SystemClock.uptimeMillis(); 4211 enqueueInputEvent(new KeyEvent(curTime, curTime, 4212 KeyEvent.ACTION_DOWN, keycode, 0, metaState, 4213 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4214 InputDevice.SOURCE_KEYBOARD)); 4215 enqueueInputEvent(new KeyEvent(curTime, curTime, 4216 KeyEvent.ACTION_UP, keycode, 0, metaState, 4217 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4218 InputDevice.SOURCE_KEYBOARD)); 4219 } 4220 mLastTime = curTime; 4221 } 4222 } 4223 4224 public void cancel(MotionEvent event) { 4225 mLastTime = Integer.MIN_VALUE; 4226 4227 // If we reach this, we consumed a trackball event. 4228 // Because we will not translate the trackball event into a key event, 4229 // touch mode will not exit, so we exit touch mode here. 4230 if (mView != null && mAdded) { 4231 ensureTouchMode(false); 4232 } 4233 } 4234 } 4235 4236 /** 4237 * Maintains state information for a single trackball axis, generating 4238 * discrete (DPAD) movements based on raw trackball motion. 4239 */ 4240 static final class TrackballAxis { 4241 /** 4242 * The maximum amount of acceleration we will apply. 4243 */ 4244 static final float MAX_ACCELERATION = 20; 4245 4246 /** 4247 * The maximum amount of time (in milliseconds) between events in order 4248 * for us to consider the user to be doing fast trackball movements, 4249 * and thus apply an acceleration. 4250 */ 4251 static final long FAST_MOVE_TIME = 150; 4252 4253 /** 4254 * Scaling factor to the time (in milliseconds) between events to how 4255 * much to multiple/divide the current acceleration. When movement 4256 * is < FAST_MOVE_TIME this multiplies the acceleration; when > 4257 * FAST_MOVE_TIME it divides it. 4258 */ 4259 static final float ACCEL_MOVE_SCALING_FACTOR = (1.0f/40); 4260 4261 static final float FIRST_MOVEMENT_THRESHOLD = 0.5f; 4262 static final float SECOND_CUMULATIVE_MOVEMENT_THRESHOLD = 2.0f; 4263 static final float SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD = 1.0f; 4264 4265 float position; 4266 float acceleration = 1; 4267 long lastMoveTime = 0; 4268 int step; 4269 int dir; 4270 int nonAccelMovement; 4271 4272 void reset(int _step) { 4273 position = 0; 4274 acceleration = 1; 4275 lastMoveTime = 0; 4276 step = _step; 4277 dir = 0; 4278 } 4279 4280 /** 4281 * Add trackball movement into the state. If the direction of movement 4282 * has been reversed, the state is reset before adding the 4283 * movement (so that you don't have to compensate for any previously 4284 * collected movement before see the result of the movement in the 4285 * new direction). 4286 * 4287 * @return Returns the absolute value of the amount of movement 4288 * collected so far. 4289 */ 4290 float collect(float off, long time, String axis) { 4291 long normTime; 4292 if (off > 0) { 4293 normTime = (long)(off * FAST_MOVE_TIME); 4294 if (dir < 0) { 4295 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to positive!"); 4296 position = 0; 4297 step = 0; 4298 acceleration = 1; 4299 lastMoveTime = 0; 4300 } 4301 dir = 1; 4302 } else if (off < 0) { 4303 normTime = (long)((-off) * FAST_MOVE_TIME); 4304 if (dir > 0) { 4305 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to negative!"); 4306 position = 0; 4307 step = 0; 4308 acceleration = 1; 4309 lastMoveTime = 0; 4310 } 4311 dir = -1; 4312 } else { 4313 normTime = 0; 4314 } 4315 4316 // The number of milliseconds between each movement that is 4317 // considered "normal" and will not result in any acceleration 4318 // or deceleration, scaled by the offset we have here. 4319 if (normTime > 0) { 4320 long delta = time - lastMoveTime; 4321 lastMoveTime = time; 4322 float acc = acceleration; 4323 if (delta < normTime) { 4324 // The user is scrolling rapidly, so increase acceleration. 4325 float scale = (normTime-delta) * ACCEL_MOVE_SCALING_FACTOR; 4326 if (scale > 1) acc *= scale; 4327 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " accelerate: off=" 4328 + off + " normTime=" + normTime + " delta=" + delta 4329 + " scale=" + scale + " acc=" + acc); 4330 acceleration = acc < MAX_ACCELERATION ? acc : MAX_ACCELERATION; 4331 } else { 4332 // The user is scrolling slowly, so decrease acceleration. 4333 float scale = (delta-normTime) * ACCEL_MOVE_SCALING_FACTOR; 4334 if (scale > 1) acc /= scale; 4335 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " deccelerate: off=" 4336 + off + " normTime=" + normTime + " delta=" + delta 4337 + " scale=" + scale + " acc=" + acc); 4338 acceleration = acc > 1 ? acc : 1; 4339 } 4340 } 4341 position += off; 4342 return Math.abs(position); 4343 } 4344 4345 /** 4346 * Generate the number of discrete movement events appropriate for 4347 * the currently collected trackball movement. 4348 * 4349 * @return Returns the number of discrete movements, either positive 4350 * or negative, or 0 if there is not enough trackball movement yet 4351 * for a discrete movement. 4352 */ 4353 int generate() { 4354 int movement = 0; 4355 nonAccelMovement = 0; 4356 do { 4357 final int dir = position >= 0 ? 1 : -1; 4358 switch (step) { 4359 // If we are going to execute the first step, then we want 4360 // to do this as soon as possible instead of waiting for 4361 // a full movement, in order to make things look responsive. 4362 case 0: 4363 if (Math.abs(position) < FIRST_MOVEMENT_THRESHOLD) { 4364 return movement; 4365 } 4366 movement += dir; 4367 nonAccelMovement += dir; 4368 step = 1; 4369 break; 4370 // If we have generated the first movement, then we need 4371 // to wait for the second complete trackball motion before 4372 // generating the second discrete movement. 4373 case 1: 4374 if (Math.abs(position) < SECOND_CUMULATIVE_MOVEMENT_THRESHOLD) { 4375 return movement; 4376 } 4377 movement += dir; 4378 nonAccelMovement += dir; 4379 position -= SECOND_CUMULATIVE_MOVEMENT_THRESHOLD * dir; 4380 step = 2; 4381 break; 4382 // After the first two, we generate discrete movements 4383 // consistently with the trackball, applying an acceleration 4384 // if the trackball is moving quickly. This is a simple 4385 // acceleration on top of what we already compute based 4386 // on how quickly the wheel is being turned, to apply 4387 // a longer increasing acceleration to continuous movement 4388 // in one direction. 4389 default: 4390 if (Math.abs(position) < SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD) { 4391 return movement; 4392 } 4393 movement += dir; 4394 position -= dir * SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD; 4395 float acc = acceleration; 4396 acc *= 1.1f; 4397 acceleration = acc < MAX_ACCELERATION ? acc : acceleration; 4398 break; 4399 } 4400 } while (true); 4401 } 4402 } 4403 4404 /** 4405 * Creates dpad events from unhandled joystick movements. 4406 */ 4407 final class SyntheticJoystickHandler extends Handler { 4408 private final static String TAG = "SyntheticJoystickHandler"; 4409 private final static int MSG_ENQUEUE_X_AXIS_KEY_REPEAT = 1; 4410 private final static int MSG_ENQUEUE_Y_AXIS_KEY_REPEAT = 2; 4411 4412 private int mLastXDirection; 4413 private int mLastYDirection; 4414 private int mLastXKeyCode; 4415 private int mLastYKeyCode; 4416 4417 public SyntheticJoystickHandler() { 4418 super(true); 4419 } 4420 4421 @Override 4422 public void handleMessage(Message msg) { 4423 switch (msg.what) { 4424 case MSG_ENQUEUE_X_AXIS_KEY_REPEAT: 4425 case MSG_ENQUEUE_Y_AXIS_KEY_REPEAT: { 4426 KeyEvent oldEvent = (KeyEvent)msg.obj; 4427 KeyEvent e = KeyEvent.changeTimeRepeat(oldEvent, 4428 SystemClock.uptimeMillis(), 4429 oldEvent.getRepeatCount() + 1); 4430 if (mAttachInfo.mHasWindowFocus) { 4431 enqueueInputEvent(e); 4432 Message m = obtainMessage(msg.what, e); 4433 m.setAsynchronous(true); 4434 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatDelay()); 4435 } 4436 } break; 4437 } 4438 } 4439 4440 public void process(MotionEvent event) { 4441 switch(event.getActionMasked()) { 4442 case MotionEvent.ACTION_CANCEL: 4443 cancel(event); 4444 break; 4445 case MotionEvent.ACTION_MOVE: 4446 update(event, true); 4447 break; 4448 default: 4449 Log.w(TAG, "Unexpected action: " + event.getActionMasked()); 4450 } 4451 } 4452 4453 private void cancel(MotionEvent event) { 4454 removeMessages(MSG_ENQUEUE_X_AXIS_KEY_REPEAT); 4455 removeMessages(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT); 4456 update(event, false); 4457 } 4458 4459 private void update(MotionEvent event, boolean synthesizeNewKeys) { 4460 final long time = event.getEventTime(); 4461 final int metaState = event.getMetaState(); 4462 final int deviceId = event.getDeviceId(); 4463 final int source = event.getSource(); 4464 4465 int xDirection = joystickAxisValueToDirection( 4466 event.getAxisValue(MotionEvent.AXIS_HAT_X)); 4467 if (xDirection == 0) { 4468 xDirection = joystickAxisValueToDirection(event.getX()); 4469 } 4470 4471 int yDirection = joystickAxisValueToDirection( 4472 event.getAxisValue(MotionEvent.AXIS_HAT_Y)); 4473 if (yDirection == 0) { 4474 yDirection = joystickAxisValueToDirection(event.getY()); 4475 } 4476 4477 if (xDirection != mLastXDirection) { 4478 if (mLastXKeyCode != 0) { 4479 removeMessages(MSG_ENQUEUE_X_AXIS_KEY_REPEAT); 4480 enqueueInputEvent(new KeyEvent(time, time, 4481 KeyEvent.ACTION_UP, mLastXKeyCode, 0, metaState, 4482 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4483 mLastXKeyCode = 0; 4484 } 4485 4486 mLastXDirection = xDirection; 4487 4488 if (xDirection != 0 && synthesizeNewKeys) { 4489 mLastXKeyCode = xDirection > 0 4490 ? KeyEvent.KEYCODE_DPAD_RIGHT : KeyEvent.KEYCODE_DPAD_LEFT; 4491 final KeyEvent e = new KeyEvent(time, time, 4492 KeyEvent.ACTION_DOWN, mLastXKeyCode, 0, metaState, 4493 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4494 enqueueInputEvent(e); 4495 Message m = obtainMessage(MSG_ENQUEUE_X_AXIS_KEY_REPEAT, e); 4496 m.setAsynchronous(true); 4497 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4498 } 4499 } 4500 4501 if (yDirection != mLastYDirection) { 4502 if (mLastYKeyCode != 0) { 4503 removeMessages(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT); 4504 enqueueInputEvent(new KeyEvent(time, time, 4505 KeyEvent.ACTION_UP, mLastYKeyCode, 0, metaState, 4506 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4507 mLastYKeyCode = 0; 4508 } 4509 4510 mLastYDirection = yDirection; 4511 4512 if (yDirection != 0 && synthesizeNewKeys) { 4513 mLastYKeyCode = yDirection > 0 4514 ? KeyEvent.KEYCODE_DPAD_DOWN : KeyEvent.KEYCODE_DPAD_UP; 4515 final KeyEvent e = new KeyEvent(time, time, 4516 KeyEvent.ACTION_DOWN, mLastYKeyCode, 0, metaState, 4517 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4518 enqueueInputEvent(e); 4519 Message m = obtainMessage(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT, e); 4520 m.setAsynchronous(true); 4521 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4522 } 4523 } 4524 } 4525 4526 private int joystickAxisValueToDirection(float value) { 4527 if (value >= 0.5f) { 4528 return 1; 4529 } else if (value <= -0.5f) { 4530 return -1; 4531 } else { 4532 return 0; 4533 } 4534 } 4535 } 4536 4537 /** 4538 * Creates dpad events from unhandled touch navigation movements. 4539 */ 4540 final class SyntheticTouchNavigationHandler extends Handler { 4541 private static final String LOCAL_TAG = "SyntheticTouchNavigationHandler"; 4542 private static final boolean LOCAL_DEBUG = false; 4543 4544 // Assumed nominal width and height in millimeters of a touch navigation pad, 4545 // if no resolution information is available from the input system. 4546 private static final float DEFAULT_WIDTH_MILLIMETERS = 48; 4547 private static final float DEFAULT_HEIGHT_MILLIMETERS = 48; 4548 4549 /* TODO: These constants should eventually be moved to ViewConfiguration. */ 4550 4551 // The nominal distance traveled to move by one unit. 4552 private static final int TICK_DISTANCE_MILLIMETERS = 12; 4553 4554 // Minimum and maximum fling velocity in ticks per second. 4555 // The minimum velocity should be set such that we perform enough ticks per 4556 // second that the fling appears to be fluid. For example, if we set the minimum 4557 // to 2 ticks per second, then there may be up to half a second delay between the next 4558 // to last and last ticks which is noticeably discrete and jerky. This value should 4559 // probably not be set to anything less than about 4. 4560 // If fling accuracy is a problem then consider tuning the tick distance instead. 4561 private static final float MIN_FLING_VELOCITY_TICKS_PER_SECOND = 6f; 4562 private static final float MAX_FLING_VELOCITY_TICKS_PER_SECOND = 20f; 4563 4564 // Fling velocity decay factor applied after each new key is emitted. 4565 // This parameter controls the deceleration and overall duration of the fling. 4566 // The fling stops automatically when its velocity drops below the minimum 4567 // fling velocity defined above. 4568 private static final float FLING_TICK_DECAY = 0.8f; 4569 4570 /* The input device that we are tracking. */ 4571 4572 private int mCurrentDeviceId = -1; 4573 private int mCurrentSource; 4574 private boolean mCurrentDeviceSupported; 4575 4576 /* Configuration for the current input device. */ 4577 4578 // The scaled tick distance. A movement of this amount should generally translate 4579 // into a single dpad event in a given direction. 4580 private float mConfigTickDistance; 4581 4582 // The minimum and maximum scaled fling velocity. 4583 private float mConfigMinFlingVelocity; 4584 private float mConfigMaxFlingVelocity; 4585 4586 /* Tracking state. */ 4587 4588 // The velocity tracker for detecting flings. 4589 private VelocityTracker mVelocityTracker; 4590 4591 // The active pointer id, or -1 if none. 4592 private int mActivePointerId = -1; 4593 4594 // Location where tracking started. 4595 private float mStartX; 4596 private float mStartY; 4597 4598 // Most recently observed position. 4599 private float mLastX; 4600 private float mLastY; 4601 4602 // Accumulated movement delta since the last direction key was sent. 4603 private float mAccumulatedX; 4604 private float mAccumulatedY; 4605 4606 // Set to true if any movement was delivered to the app. 4607 // Implies that tap slop was exceeded. 4608 private boolean mConsumedMovement; 4609 4610 // The most recently sent key down event. 4611 // The keycode remains set until the direction changes or a fling ends 4612 // so that repeated key events may be generated as required. 4613 private long mPendingKeyDownTime; 4614 private int mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 4615 private int mPendingKeyRepeatCount; 4616 private int mPendingKeyMetaState; 4617 4618 // The current fling velocity while a fling is in progress. 4619 private boolean mFlinging; 4620 private float mFlingVelocity; 4621 4622 public SyntheticTouchNavigationHandler() { 4623 super(true); 4624 } 4625 4626 public void process(MotionEvent event) { 4627 // Update the current device information. 4628 final long time = event.getEventTime(); 4629 final int deviceId = event.getDeviceId(); 4630 final int source = event.getSource(); 4631 if (mCurrentDeviceId != deviceId || mCurrentSource != source) { 4632 finishKeys(time); 4633 finishTracking(time); 4634 mCurrentDeviceId = deviceId; 4635 mCurrentSource = source; 4636 mCurrentDeviceSupported = false; 4637 InputDevice device = event.getDevice(); 4638 if (device != null) { 4639 // In order to support an input device, we must know certain 4640 // characteristics about it, such as its size and resolution. 4641 InputDevice.MotionRange xRange = device.getMotionRange(MotionEvent.AXIS_X); 4642 InputDevice.MotionRange yRange = device.getMotionRange(MotionEvent.AXIS_Y); 4643 if (xRange != null && yRange != null) { 4644 mCurrentDeviceSupported = true; 4645 4646 // Infer the resolution if it not actually known. 4647 float xRes = xRange.getResolution(); 4648 if (xRes <= 0) { 4649 xRes = xRange.getRange() / DEFAULT_WIDTH_MILLIMETERS; 4650 } 4651 float yRes = yRange.getResolution(); 4652 if (yRes <= 0) { 4653 yRes = yRange.getRange() / DEFAULT_HEIGHT_MILLIMETERS; 4654 } 4655 float nominalRes = (xRes + yRes) * 0.5f; 4656 4657 // Precompute all of the configuration thresholds we will need. 4658 mConfigTickDistance = TICK_DISTANCE_MILLIMETERS * nominalRes; 4659 mConfigMinFlingVelocity = 4660 MIN_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 4661 mConfigMaxFlingVelocity = 4662 MAX_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 4663 4664 if (LOCAL_DEBUG) { 4665 Log.d(LOCAL_TAG, "Configured device " + mCurrentDeviceId 4666 + " (" + Integer.toHexString(mCurrentSource) + "): " 4667 + ", mConfigTickDistance=" + mConfigTickDistance 4668 + ", mConfigMinFlingVelocity=" + mConfigMinFlingVelocity 4669 + ", mConfigMaxFlingVelocity=" + mConfigMaxFlingVelocity); 4670 } 4671 } 4672 } 4673 } 4674 if (!mCurrentDeviceSupported) { 4675 return; 4676 } 4677 4678 // Handle the event. 4679 final int action = event.getActionMasked(); 4680 switch (action) { 4681 case MotionEvent.ACTION_DOWN: { 4682 boolean caughtFling = mFlinging; 4683 finishKeys(time); 4684 finishTracking(time); 4685 mActivePointerId = event.getPointerId(0); 4686 mVelocityTracker = VelocityTracker.obtain(); 4687 mVelocityTracker.addMovement(event); 4688 mStartX = event.getX(); 4689 mStartY = event.getY(); 4690 mLastX = mStartX; 4691 mLastY = mStartY; 4692 mAccumulatedX = 0; 4693 mAccumulatedY = 0; 4694 4695 // If we caught a fling, then pretend that the tap slop has already 4696 // been exceeded to suppress taps whose only purpose is to stop the fling. 4697 mConsumedMovement = caughtFling; 4698 break; 4699 } 4700 4701 case MotionEvent.ACTION_MOVE: 4702 case MotionEvent.ACTION_UP: { 4703 if (mActivePointerId < 0) { 4704 break; 4705 } 4706 final int index = event.findPointerIndex(mActivePointerId); 4707 if (index < 0) { 4708 finishKeys(time); 4709 finishTracking(time); 4710 break; 4711 } 4712 4713 mVelocityTracker.addMovement(event); 4714 final float x = event.getX(index); 4715 final float y = event.getY(index); 4716 mAccumulatedX += x - mLastX; 4717 mAccumulatedY += y - mLastY; 4718 mLastX = x; 4719 mLastY = y; 4720 4721 // Consume any accumulated movement so far. 4722 final int metaState = event.getMetaState(); 4723 consumeAccumulatedMovement(time, metaState); 4724 4725 // Detect taps and flings. 4726 if (action == MotionEvent.ACTION_UP) { 4727 if (mConsumedMovement && mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 4728 // It might be a fling. 4729 mVelocityTracker.computeCurrentVelocity(1000, mConfigMaxFlingVelocity); 4730 final float vx = mVelocityTracker.getXVelocity(mActivePointerId); 4731 final float vy = mVelocityTracker.getYVelocity(mActivePointerId); 4732 if (!startFling(time, vx, vy)) { 4733 finishKeys(time); 4734 } 4735 } 4736 finishTracking(time); 4737 } 4738 break; 4739 } 4740 4741 case MotionEvent.ACTION_CANCEL: { 4742 finishKeys(time); 4743 finishTracking(time); 4744 break; 4745 } 4746 } 4747 } 4748 4749 public void cancel(MotionEvent event) { 4750 if (mCurrentDeviceId == event.getDeviceId() 4751 && mCurrentSource == event.getSource()) { 4752 final long time = event.getEventTime(); 4753 finishKeys(time); 4754 finishTracking(time); 4755 } 4756 } 4757 4758 private void finishKeys(long time) { 4759 cancelFling(); 4760 sendKeyUp(time); 4761 } 4762 4763 private void finishTracking(long time) { 4764 if (mActivePointerId >= 0) { 4765 mActivePointerId = -1; 4766 mVelocityTracker.recycle(); 4767 mVelocityTracker = null; 4768 } 4769 } 4770 4771 private void consumeAccumulatedMovement(long time, int metaState) { 4772 final float absX = Math.abs(mAccumulatedX); 4773 final float absY = Math.abs(mAccumulatedY); 4774 if (absX >= absY) { 4775 if (absX >= mConfigTickDistance) { 4776 mAccumulatedX = consumeAccumulatedMovement(time, metaState, mAccumulatedX, 4777 KeyEvent.KEYCODE_DPAD_LEFT, KeyEvent.KEYCODE_DPAD_RIGHT); 4778 mAccumulatedY = 0; 4779 mConsumedMovement = true; 4780 } 4781 } else { 4782 if (absY >= mConfigTickDistance) { 4783 mAccumulatedY = consumeAccumulatedMovement(time, metaState, mAccumulatedY, 4784 KeyEvent.KEYCODE_DPAD_UP, KeyEvent.KEYCODE_DPAD_DOWN); 4785 mAccumulatedX = 0; 4786 mConsumedMovement = true; 4787 } 4788 } 4789 } 4790 4791 private float consumeAccumulatedMovement(long time, int metaState, 4792 float accumulator, int negativeKeyCode, int positiveKeyCode) { 4793 while (accumulator <= -mConfigTickDistance) { 4794 sendKeyDownOrRepeat(time, negativeKeyCode, metaState); 4795 accumulator += mConfigTickDistance; 4796 } 4797 while (accumulator >= mConfigTickDistance) { 4798 sendKeyDownOrRepeat(time, positiveKeyCode, metaState); 4799 accumulator -= mConfigTickDistance; 4800 } 4801 return accumulator; 4802 } 4803 4804 private void sendKeyDownOrRepeat(long time, int keyCode, int metaState) { 4805 if (mPendingKeyCode != keyCode) { 4806 sendKeyUp(time); 4807 mPendingKeyDownTime = time; 4808 mPendingKeyCode = keyCode; 4809 mPendingKeyRepeatCount = 0; 4810 } else { 4811 mPendingKeyRepeatCount += 1; 4812 } 4813 mPendingKeyMetaState = metaState; 4814 4815 // Note: Normally we would pass FLAG_LONG_PRESS when the repeat count is 1 4816 // but it doesn't quite make sense when simulating the events in this way. 4817 if (LOCAL_DEBUG) { 4818 Log.d(LOCAL_TAG, "Sending key down: keyCode=" + mPendingKeyCode 4819 + ", repeatCount=" + mPendingKeyRepeatCount 4820 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 4821 } 4822 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 4823 KeyEvent.ACTION_DOWN, mPendingKeyCode, mPendingKeyRepeatCount, 4824 mPendingKeyMetaState, mCurrentDeviceId, 4825 KeyEvent.FLAG_FALLBACK, mCurrentSource)); 4826 } 4827 4828 private void sendKeyUp(long time) { 4829 if (mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 4830 if (LOCAL_DEBUG) { 4831 Log.d(LOCAL_TAG, "Sending key up: keyCode=" + mPendingKeyCode 4832 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 4833 } 4834 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 4835 KeyEvent.ACTION_UP, mPendingKeyCode, 0, mPendingKeyMetaState, 4836 mCurrentDeviceId, 0, KeyEvent.FLAG_FALLBACK, 4837 mCurrentSource)); 4838 mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 4839 } 4840 } 4841 4842 private boolean startFling(long time, float vx, float vy) { 4843 if (LOCAL_DEBUG) { 4844 Log.d(LOCAL_TAG, "Considering fling: vx=" + vx + ", vy=" + vy 4845 + ", min=" + mConfigMinFlingVelocity); 4846 } 4847 4848 // Flings must be oriented in the same direction as the preceding movements. 4849 switch (mPendingKeyCode) { 4850 case KeyEvent.KEYCODE_DPAD_LEFT: 4851 if (-vx >= mConfigMinFlingVelocity 4852 && Math.abs(vy) < mConfigMinFlingVelocity) { 4853 mFlingVelocity = -vx; 4854 break; 4855 } 4856 return false; 4857 4858 case KeyEvent.KEYCODE_DPAD_RIGHT: 4859 if (vx >= mConfigMinFlingVelocity 4860 && Math.abs(vy) < mConfigMinFlingVelocity) { 4861 mFlingVelocity = vx; 4862 break; 4863 } 4864 return false; 4865 4866 case KeyEvent.KEYCODE_DPAD_UP: 4867 if (-vy >= mConfigMinFlingVelocity 4868 && Math.abs(vx) < mConfigMinFlingVelocity) { 4869 mFlingVelocity = -vy; 4870 break; 4871 } 4872 return false; 4873 4874 case KeyEvent.KEYCODE_DPAD_DOWN: 4875 if (vy >= mConfigMinFlingVelocity 4876 && Math.abs(vx) < mConfigMinFlingVelocity) { 4877 mFlingVelocity = vy; 4878 break; 4879 } 4880 return false; 4881 } 4882 4883 // Post the first fling event. 4884 mFlinging = postFling(time); 4885 return mFlinging; 4886 } 4887 4888 private boolean postFling(long time) { 4889 // The idea here is to estimate the time when the pointer would have 4890 // traveled one tick distance unit given the current fling velocity. 4891 // This effect creates continuity of motion. 4892 if (mFlingVelocity >= mConfigMinFlingVelocity) { 4893 long delay = (long)(mConfigTickDistance / mFlingVelocity * 1000); 4894 postAtTime(mFlingRunnable, time + delay); 4895 if (LOCAL_DEBUG) { 4896 Log.d(LOCAL_TAG, "Posted fling: velocity=" 4897 + mFlingVelocity + ", delay=" + delay 4898 + ", keyCode=" + mPendingKeyCode); 4899 } 4900 return true; 4901 } 4902 return false; 4903 } 4904 4905 private void cancelFling() { 4906 if (mFlinging) { 4907 removeCallbacks(mFlingRunnable); 4908 mFlinging = false; 4909 } 4910 } 4911 4912 private final Runnable mFlingRunnable = new Runnable() { 4913 @Override 4914 public void run() { 4915 final long time = SystemClock.uptimeMillis(); 4916 sendKeyDownOrRepeat(time, mPendingKeyCode, mPendingKeyMetaState); 4917 mFlingVelocity *= FLING_TICK_DECAY; 4918 if (!postFling(time)) { 4919 mFlinging = false; 4920 finishKeys(time); 4921 } 4922 } 4923 }; 4924 } 4925 4926 final class SyntheticKeyboardHandler { 4927 public void process(KeyEvent event) { 4928 if ((event.getFlags() & KeyEvent.FLAG_FALLBACK) != 0) { 4929 return; 4930 } 4931 4932 final KeyCharacterMap kcm = event.getKeyCharacterMap(); 4933 final int keyCode = event.getKeyCode(); 4934 final int metaState = event.getMetaState(); 4935 4936 // Check for fallback actions specified by the key character map. 4937 KeyCharacterMap.FallbackAction fallbackAction = 4938 kcm.getFallbackAction(keyCode, metaState); 4939 if (fallbackAction != null) { 4940 final int flags = event.getFlags() | KeyEvent.FLAG_FALLBACK; 4941 KeyEvent fallbackEvent = KeyEvent.obtain( 4942 event.getDownTime(), event.getEventTime(), 4943 event.getAction(), fallbackAction.keyCode, 4944 event.getRepeatCount(), fallbackAction.metaState, 4945 event.getDeviceId(), event.getScanCode(), 4946 flags, event.getSource(), null); 4947 fallbackAction.recycle(); 4948 enqueueInputEvent(fallbackEvent); 4949 } 4950 } 4951 } 4952 4953 /** 4954 * Returns true if the key is used for keyboard navigation. 4955 * @param keyEvent The key event. 4956 * @return True if the key is used for keyboard navigation. 4957 */ 4958 private static boolean isNavigationKey(KeyEvent keyEvent) { 4959 switch (keyEvent.getKeyCode()) { 4960 case KeyEvent.KEYCODE_DPAD_LEFT: 4961 case KeyEvent.KEYCODE_DPAD_RIGHT: 4962 case KeyEvent.KEYCODE_DPAD_UP: 4963 case KeyEvent.KEYCODE_DPAD_DOWN: 4964 case KeyEvent.KEYCODE_DPAD_CENTER: 4965 case KeyEvent.KEYCODE_PAGE_UP: 4966 case KeyEvent.KEYCODE_PAGE_DOWN: 4967 case KeyEvent.KEYCODE_MOVE_HOME: 4968 case KeyEvent.KEYCODE_MOVE_END: 4969 case KeyEvent.KEYCODE_TAB: 4970 case KeyEvent.KEYCODE_SPACE: 4971 case KeyEvent.KEYCODE_ENTER: 4972 return true; 4973 } 4974 return false; 4975 } 4976 4977 /** 4978 * Returns true if the key is used for typing. 4979 * @param keyEvent The key event. 4980 * @return True if the key is used for typing. 4981 */ 4982 private static boolean isTypingKey(KeyEvent keyEvent) { 4983 return keyEvent.getUnicodeChar() > 0; 4984 } 4985 4986 /** 4987 * See if the key event means we should leave touch mode (and leave touch mode if so). 4988 * @param event The key event. 4989 * @return Whether this key event should be consumed (meaning the act of 4990 * leaving touch mode alone is considered the event). 4991 */ 4992 private boolean checkForLeavingTouchModeAndConsume(KeyEvent event) { 4993 // Only relevant in touch mode. 4994 if (!mAttachInfo.mInTouchMode) { 4995 return false; 4996 } 4997 4998 // Only consider leaving touch mode on DOWN or MULTIPLE actions, never on UP. 4999 final int action = event.getAction(); 5000 if (action != KeyEvent.ACTION_DOWN && action != KeyEvent.ACTION_MULTIPLE) { 5001 return false; 5002 } 5003 5004 // Don't leave touch mode if the IME told us not to. 5005 if ((event.getFlags() & KeyEvent.FLAG_KEEP_TOUCH_MODE) != 0) { 5006 return false; 5007 } 5008 5009 // If the key can be used for keyboard navigation then leave touch mode 5010 // and select a focused view if needed (in ensureTouchMode). 5011 // When a new focused view is selected, we consume the navigation key because 5012 // navigation doesn't make much sense unless a view already has focus so 5013 // the key's purpose is to set focus. 5014 if (isNavigationKey(event)) { 5015 return ensureTouchMode(false); 5016 } 5017 5018 // If the key can be used for typing then leave touch mode 5019 // and select a focused view if needed (in ensureTouchMode). 5020 // Always allow the view to process the typing key. 5021 if (isTypingKey(event)) { 5022 ensureTouchMode(false); 5023 return false; 5024 } 5025 5026 return false; 5027 } 5028 5029 /* drag/drop */ 5030 void setLocalDragState(Object obj) { 5031 mLocalDragState = obj; 5032 } 5033 5034 private void handleDragEvent(DragEvent event) { 5035 // From the root, only drag start/end/location are dispatched. entered/exited 5036 // are determined and dispatched by the viewgroup hierarchy, who then report 5037 // that back here for ultimate reporting back to the framework. 5038 if (mView != null && mAdded) { 5039 final int what = event.mAction; 5040 5041 if (what == DragEvent.ACTION_DRAG_EXITED) { 5042 // A direct EXITED event means that the window manager knows we've just crossed 5043 // a window boundary, so the current drag target within this one must have 5044 // just been exited. Send it the usual notifications and then we're done 5045 // for now. 5046 mView.dispatchDragEvent(event); 5047 } else { 5048 // Cache the drag description when the operation starts, then fill it in 5049 // on subsequent calls as a convenience 5050 if (what == DragEvent.ACTION_DRAG_STARTED) { 5051 mCurrentDragView = null; // Start the current-recipient tracking 5052 mDragDescription = event.mClipDescription; 5053 } else { 5054 event.mClipDescription = mDragDescription; 5055 } 5056 5057 // For events with a [screen] location, translate into window coordinates 5058 if ((what == DragEvent.ACTION_DRAG_LOCATION) || (what == DragEvent.ACTION_DROP)) { 5059 mDragPoint.set(event.mX, event.mY); 5060 if (mTranslator != null) { 5061 mTranslator.translatePointInScreenToAppWindow(mDragPoint); 5062 } 5063 5064 if (mCurScrollY != 0) { 5065 mDragPoint.offset(0, mCurScrollY); 5066 } 5067 5068 event.mX = mDragPoint.x; 5069 event.mY = mDragPoint.y; 5070 } 5071 5072 // Remember who the current drag target is pre-dispatch 5073 final View prevDragView = mCurrentDragView; 5074 5075 // Now dispatch the drag/drop event 5076 boolean result = mView.dispatchDragEvent(event); 5077 5078 // If we changed apparent drag target, tell the OS about it 5079 if (prevDragView != mCurrentDragView) { 5080 try { 5081 if (prevDragView != null) { 5082 mWindowSession.dragRecipientExited(mWindow); 5083 } 5084 if (mCurrentDragView != null) { 5085 mWindowSession.dragRecipientEntered(mWindow); 5086 } 5087 } catch (RemoteException e) { 5088 Slog.e(TAG, "Unable to note drag target change"); 5089 } 5090 } 5091 5092 // Report the drop result when we're done 5093 if (what == DragEvent.ACTION_DROP) { 5094 mDragDescription = null; 5095 try { 5096 Log.i(TAG, "Reporting drop result: " + result); 5097 mWindowSession.reportDropResult(mWindow, result); 5098 } catch (RemoteException e) { 5099 Log.e(TAG, "Unable to report drop result"); 5100 } 5101 } 5102 5103 // When the drag operation ends, release any local state object 5104 // that may have been in use 5105 if (what == DragEvent.ACTION_DRAG_ENDED) { 5106 setLocalDragState(null); 5107 } 5108 } 5109 } 5110 event.recycle(); 5111 } 5112 5113 public void handleDispatchSystemUiVisibilityChanged(SystemUiVisibilityInfo args) { 5114 if (mSeq != args.seq) { 5115 // The sequence has changed, so we need to update our value and make 5116 // sure to do a traversal afterward so the window manager is given our 5117 // most recent data. 5118 mSeq = args.seq; 5119 mAttachInfo.mForceReportNewAttributes = true; 5120 scheduleTraversals(); 5121 } 5122 if (mView == null) return; 5123 if (args.localChanges != 0) { 5124 mView.updateLocalSystemUiVisibility(args.localValue, args.localChanges); 5125 } 5126 5127 int visibility = args.globalVisibility&View.SYSTEM_UI_CLEARABLE_FLAGS; 5128 if (visibility != mAttachInfo.mGlobalSystemUiVisibility) { 5129 mAttachInfo.mGlobalSystemUiVisibility = visibility; 5130 mView.dispatchSystemUiVisibilityChanged(visibility); 5131 } 5132 } 5133 5134 public void handleDispatchDoneAnimating() { 5135 if (mWindowsAnimating) { 5136 mWindowsAnimating = false; 5137 if (!mDirty.isEmpty() || mIsAnimating || mFullRedrawNeeded) { 5138 scheduleTraversals(); 5139 } 5140 } 5141 } 5142 5143 public void getLastTouchPoint(Point outLocation) { 5144 outLocation.x = (int) mLastTouchPoint.x; 5145 outLocation.y = (int) mLastTouchPoint.y; 5146 } 5147 5148 public void setDragFocus(View newDragTarget) { 5149 if (mCurrentDragView != newDragTarget) { 5150 mCurrentDragView = newDragTarget; 5151 } 5152 } 5153 5154 private AudioManager getAudioManager() { 5155 if (mView == null) { 5156 throw new IllegalStateException("getAudioManager called when there is no mView"); 5157 } 5158 if (mAudioManager == null) { 5159 mAudioManager = (AudioManager) mView.getContext().getSystemService(Context.AUDIO_SERVICE); 5160 } 5161 return mAudioManager; 5162 } 5163 5164 public AccessibilityInteractionController getAccessibilityInteractionController() { 5165 if (mView == null) { 5166 throw new IllegalStateException("getAccessibilityInteractionController" 5167 + " called when there is no mView"); 5168 } 5169 if (mAccessibilityInteractionController == null) { 5170 mAccessibilityInteractionController = new AccessibilityInteractionController(this); 5171 } 5172 return mAccessibilityInteractionController; 5173 } 5174 5175 private int relayoutWindow(WindowManager.LayoutParams params, int viewVisibility, 5176 boolean insetsPending) throws RemoteException { 5177 5178 float appScale = mAttachInfo.mApplicationScale; 5179 boolean restore = false; 5180 if (params != null && mTranslator != null) { 5181 restore = true; 5182 params.backup(); 5183 mTranslator.translateWindowLayout(params); 5184 } 5185 if (params != null) { 5186 if (DBG) Log.d(TAG, "WindowLayout in layoutWindow:" + params); 5187 } 5188 mPendingConfiguration.seq = 0; 5189 //Log.d(TAG, ">>>>>> CALLING relayout"); 5190 if (params != null && mOrigWindowType != params.type) { 5191 // For compatibility with old apps, don't crash here. 5192 if (mTargetSdkVersion < android.os.Build.VERSION_CODES.ICE_CREAM_SANDWICH) { 5193 Slog.w(TAG, "Window type can not be changed after " 5194 + "the window is added; ignoring change of " + mView); 5195 params.type = mOrigWindowType; 5196 } 5197 } 5198 int relayoutResult = mWindowSession.relayout( 5199 mWindow, mSeq, params, 5200 (int) (mView.getMeasuredWidth() * appScale + 0.5f), 5201 (int) (mView.getMeasuredHeight() * appScale + 0.5f), 5202 viewVisibility, insetsPending ? WindowManagerGlobal.RELAYOUT_INSETS_PENDING : 0, 5203 mWinFrame, mPendingOverscanInsets, mPendingContentInsets, mPendingVisibleInsets, 5204 mPendingStableInsets, mPendingConfiguration, mSurface); 5205 //Log.d(TAG, "<<<<<< BACK FROM relayout"); 5206 if (restore) { 5207 params.restore(); 5208 } 5209 5210 if (mTranslator != null) { 5211 mTranslator.translateRectInScreenToAppWinFrame(mWinFrame); 5212 mTranslator.translateRectInScreenToAppWindow(mPendingOverscanInsets); 5213 mTranslator.translateRectInScreenToAppWindow(mPendingContentInsets); 5214 mTranslator.translateRectInScreenToAppWindow(mPendingVisibleInsets); 5215 mTranslator.translateRectInScreenToAppWindow(mPendingStableInsets); 5216 } 5217 return relayoutResult; 5218 } 5219 5220 /** 5221 * {@inheritDoc} 5222 */ 5223 @Override 5224 public void playSoundEffect(int effectId) { 5225 checkThread(); 5226 5227 if (mMediaDisabled) { 5228 return; 5229 } 5230 5231 try { 5232 final AudioManager audioManager = getAudioManager(); 5233 5234 switch (effectId) { 5235 case SoundEffectConstants.CLICK: 5236 audioManager.playSoundEffect(AudioManager.FX_KEY_CLICK); 5237 return; 5238 case SoundEffectConstants.NAVIGATION_DOWN: 5239 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_DOWN); 5240 return; 5241 case SoundEffectConstants.NAVIGATION_LEFT: 5242 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_LEFT); 5243 return; 5244 case SoundEffectConstants.NAVIGATION_RIGHT: 5245 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_RIGHT); 5246 return; 5247 case SoundEffectConstants.NAVIGATION_UP: 5248 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_UP); 5249 return; 5250 default: 5251 throw new IllegalArgumentException("unknown effect id " + effectId + 5252 " not defined in " + SoundEffectConstants.class.getCanonicalName()); 5253 } 5254 } catch (IllegalStateException e) { 5255 // Exception thrown by getAudioManager() when mView is null 5256 Log.e(TAG, "FATAL EXCEPTION when attempting to play sound effect: " + e); 5257 e.printStackTrace(); 5258 } 5259 } 5260 5261 /** 5262 * {@inheritDoc} 5263 */ 5264 @Override 5265 public boolean performHapticFeedback(int effectId, boolean always) { 5266 try { 5267 return mWindowSession.performHapticFeedback(mWindow, effectId, always); 5268 } catch (RemoteException e) { 5269 return false; 5270 } 5271 } 5272 5273 /** 5274 * {@inheritDoc} 5275 */ 5276 @Override 5277 public View focusSearch(View focused, int direction) { 5278 checkThread(); 5279 if (!(mView instanceof ViewGroup)) { 5280 return null; 5281 } 5282 return FocusFinder.getInstance().findNextFocus((ViewGroup) mView, focused, direction); 5283 } 5284 5285 public void debug() { 5286 mView.debug(); 5287 } 5288 5289 public void dump(String prefix, FileDescriptor fd, PrintWriter writer, String[] args) { 5290 String innerPrefix = prefix + " "; 5291 writer.print(prefix); writer.println("ViewRoot:"); 5292 writer.print(innerPrefix); writer.print("mAdded="); writer.print(mAdded); 5293 writer.print(" mRemoved="); writer.println(mRemoved); 5294 writer.print(innerPrefix); writer.print("mConsumeBatchedInputScheduled="); 5295 writer.println(mConsumeBatchedInputScheduled); 5296 writer.print(innerPrefix); writer.print("mConsumeBatchedInputImmediatelyScheduled="); 5297 writer.println(mConsumeBatchedInputImmediatelyScheduled); 5298 writer.print(innerPrefix); writer.print("mPendingInputEventCount="); 5299 writer.println(mPendingInputEventCount); 5300 writer.print(innerPrefix); writer.print("mProcessInputEventsScheduled="); 5301 writer.println(mProcessInputEventsScheduled); 5302 writer.print(innerPrefix); writer.print("mTraversalScheduled="); 5303 writer.print(mTraversalScheduled); 5304 if (mTraversalScheduled) { 5305 writer.print(" (barrier="); writer.print(mTraversalBarrier); writer.println(")"); 5306 } else { 5307 writer.println(); 5308 } 5309 mFirstInputStage.dump(innerPrefix, writer); 5310 5311 mChoreographer.dump(prefix, writer); 5312 5313 writer.print(prefix); writer.println("View Hierarchy:"); 5314 dumpViewHierarchy(innerPrefix, writer, mView); 5315 } 5316 5317 private void dumpViewHierarchy(String prefix, PrintWriter writer, View view) { 5318 writer.print(prefix); 5319 if (view == null) { 5320 writer.println("null"); 5321 return; 5322 } 5323 writer.println(view.toString()); 5324 if (!(view instanceof ViewGroup)) { 5325 return; 5326 } 5327 ViewGroup grp = (ViewGroup)view; 5328 final int N = grp.getChildCount(); 5329 if (N <= 0) { 5330 return; 5331 } 5332 prefix = prefix + " "; 5333 for (int i=0; i<N; i++) { 5334 dumpViewHierarchy(prefix, writer, grp.getChildAt(i)); 5335 } 5336 } 5337 5338 public void dumpGfxInfo(int[] info) { 5339 info[0] = info[1] = 0; 5340 if (mView != null) { 5341 getGfxInfo(mView, info); 5342 } 5343 } 5344 5345 private static void getGfxInfo(View view, int[] info) { 5346 RenderNode renderNode = view.mRenderNode; 5347 info[0]++; 5348 if (renderNode != null) { 5349 info[1] += renderNode.getDebugSize(); 5350 } 5351 5352 if (view instanceof ViewGroup) { 5353 ViewGroup group = (ViewGroup) view; 5354 5355 int count = group.getChildCount(); 5356 for (int i = 0; i < count; i++) { 5357 getGfxInfo(group.getChildAt(i), info); 5358 } 5359 } 5360 } 5361 5362 /** 5363 * @param immediate True, do now if not in traversal. False, put on queue and do later. 5364 * @return True, request has been queued. False, request has been completed. 5365 */ 5366 boolean die(boolean immediate) { 5367 // Make sure we do execute immediately if we are in the middle of a traversal or the damage 5368 // done by dispatchDetachedFromWindow will cause havoc on return. 5369 if (immediate && !mIsInTraversal) { 5370 doDie(); 5371 return false; 5372 } 5373 5374 if (!mIsDrawing) { 5375 destroyHardwareRenderer(); 5376 } else { 5377 Log.e(TAG, "Attempting to destroy the window while drawing!\n" + 5378 " window=" + this + ", title=" + mWindowAttributes.getTitle()); 5379 } 5380 mHandler.sendEmptyMessage(MSG_DIE); 5381 return true; 5382 } 5383 5384 void doDie() { 5385 checkThread(); 5386 if (LOCAL_LOGV) Log.v(TAG, "DIE in " + this + " of " + mSurface); 5387 synchronized (this) { 5388 if (mRemoved) { 5389 return; 5390 } 5391 mRemoved = true; 5392 if (mAdded) { 5393 dispatchDetachedFromWindow(); 5394 } 5395 5396 if (mAdded && !mFirst) { 5397 destroyHardwareRenderer(); 5398 5399 if (mView != null) { 5400 int viewVisibility = mView.getVisibility(); 5401 boolean viewVisibilityChanged = mViewVisibility != viewVisibility; 5402 if (mWindowAttributesChanged || viewVisibilityChanged) { 5403 // If layout params have been changed, first give them 5404 // to the window manager to make sure it has the correct 5405 // animation info. 5406 try { 5407 if ((relayoutWindow(mWindowAttributes, viewVisibility, false) 5408 & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 5409 mWindowSession.finishDrawing(mWindow); 5410 } 5411 } catch (RemoteException e) { 5412 } 5413 } 5414 5415 mSurface.release(); 5416 } 5417 } 5418 5419 mAdded = false; 5420 } 5421 WindowManagerGlobal.getInstance().doRemoveView(this); 5422 } 5423 5424 public void requestUpdateConfiguration(Configuration config) { 5425 Message msg = mHandler.obtainMessage(MSG_UPDATE_CONFIGURATION, config); 5426 mHandler.sendMessage(msg); 5427 } 5428 5429 public void loadSystemProperties() { 5430 mHandler.post(new Runnable() { 5431 @Override 5432 public void run() { 5433 // Profiling 5434 mProfileRendering = SystemProperties.getBoolean(PROPERTY_PROFILE_RENDERING, false); 5435 profileRendering(mAttachInfo.mHasWindowFocus); 5436 5437 // Media (used by sound effects) 5438 mMediaDisabled = SystemProperties.getBoolean(PROPERTY_MEDIA_DISABLED, false); 5439 5440 // Hardware rendering 5441 if (mAttachInfo.mHardwareRenderer != null) { 5442 if (mAttachInfo.mHardwareRenderer.loadSystemProperties()) { 5443 invalidate(); 5444 } 5445 } 5446 5447 // Layout debugging 5448 boolean layout = SystemProperties.getBoolean(View.DEBUG_LAYOUT_PROPERTY, false); 5449 if (layout != mAttachInfo.mDebugLayout) { 5450 mAttachInfo.mDebugLayout = layout; 5451 if (!mHandler.hasMessages(MSG_INVALIDATE_WORLD)) { 5452 mHandler.sendEmptyMessageDelayed(MSG_INVALIDATE_WORLD, 200); 5453 } 5454 } 5455 5456 // detect emulator 5457 mIsEmulator = Build.HARDWARE.contains("goldfish"); 5458 mIsCircularEmulator = 5459 SystemProperties.getBoolean(PROPERTY_EMULATOR_CIRCULAR, false); 5460 } 5461 }); 5462 } 5463 5464 private void destroyHardwareRenderer() { 5465 HardwareRenderer hardwareRenderer = mAttachInfo.mHardwareRenderer; 5466 5467 if (hardwareRenderer != null) { 5468 if (mView != null) { 5469 hardwareRenderer.destroyHardwareResources(mView); 5470 } 5471 hardwareRenderer.destroy(); 5472 hardwareRenderer.setRequested(false); 5473 5474 mAttachInfo.mHardwareRenderer = null; 5475 mAttachInfo.mHardwareAccelerated = false; 5476 } 5477 } 5478 5479 public void dispatchFinishInputConnection(InputConnection connection) { 5480 Message msg = mHandler.obtainMessage(MSG_FINISH_INPUT_CONNECTION, connection); 5481 mHandler.sendMessage(msg); 5482 } 5483 5484 public void dispatchResized(Rect frame, Rect overscanInsets, Rect contentInsets, 5485 Rect visibleInsets, Rect stableInsets, boolean reportDraw, Configuration newConfig) { 5486 if (DEBUG_LAYOUT) Log.v(TAG, "Resizing " + this + ": frame=" + frame.toShortString() 5487 + " contentInsets=" + contentInsets.toShortString() 5488 + " visibleInsets=" + visibleInsets.toShortString() 5489 + " reportDraw=" + reportDraw); 5490 Message msg = mHandler.obtainMessage(reportDraw ? MSG_RESIZED_REPORT : MSG_RESIZED); 5491 if (mTranslator != null) { 5492 mTranslator.translateRectInScreenToAppWindow(frame); 5493 mTranslator.translateRectInScreenToAppWindow(overscanInsets); 5494 mTranslator.translateRectInScreenToAppWindow(contentInsets); 5495 mTranslator.translateRectInScreenToAppWindow(visibleInsets); 5496 } 5497 SomeArgs args = SomeArgs.obtain(); 5498 final boolean sameProcessCall = (Binder.getCallingPid() == android.os.Process.myPid()); 5499 args.arg1 = sameProcessCall ? new Rect(frame) : frame; 5500 args.arg2 = sameProcessCall ? new Rect(contentInsets) : contentInsets; 5501 args.arg3 = sameProcessCall ? new Rect(visibleInsets) : visibleInsets; 5502 args.arg4 = sameProcessCall && newConfig != null ? new Configuration(newConfig) : newConfig; 5503 args.arg5 = sameProcessCall ? new Rect(overscanInsets) : overscanInsets; 5504 args.arg6 = sameProcessCall ? new Rect(stableInsets) : stableInsets; 5505 msg.obj = args; 5506 mHandler.sendMessage(msg); 5507 } 5508 5509 public void dispatchMoved(int newX, int newY) { 5510 if (DEBUG_LAYOUT) Log.v(TAG, "Window moved " + this + ": newX=" + newX + " newY=" + newY); 5511 if (mTranslator != null) { 5512 PointF point = new PointF(newX, newY); 5513 mTranslator.translatePointInScreenToAppWindow(point); 5514 newX = (int) (point.x + 0.5); 5515 newY = (int) (point.y + 0.5); 5516 } 5517 Message msg = mHandler.obtainMessage(MSG_WINDOW_MOVED, newX, newY); 5518 mHandler.sendMessage(msg); 5519 } 5520 5521 /** 5522 * Represents a pending input event that is waiting in a queue. 5523 * 5524 * Input events are processed in serial order by the timestamp specified by 5525 * {@link InputEvent#getEventTimeNano()}. In general, the input dispatcher delivers 5526 * one input event to the application at a time and waits for the application 5527 * to finish handling it before delivering the next one. 5528 * 5529 * However, because the application or IME can synthesize and inject multiple 5530 * key events at a time without going through the input dispatcher, we end up 5531 * needing a queue on the application's side. 5532 */ 5533 private static final class QueuedInputEvent { 5534 public static final int FLAG_DELIVER_POST_IME = 1 << 0; 5535 public static final int FLAG_DEFERRED = 1 << 1; 5536 public static final int FLAG_FINISHED = 1 << 2; 5537 public static final int FLAG_FINISHED_HANDLED = 1 << 3; 5538 public static final int FLAG_RESYNTHESIZED = 1 << 4; 5539 public static final int FLAG_UNHANDLED = 1 << 5; 5540 5541 public QueuedInputEvent mNext; 5542 5543 public InputEvent mEvent; 5544 public InputEventReceiver mReceiver; 5545 public int mFlags; 5546 5547 public boolean shouldSkipIme() { 5548 if ((mFlags & FLAG_DELIVER_POST_IME) != 0) { 5549 return true; 5550 } 5551 return mEvent instanceof MotionEvent 5552 && mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER); 5553 } 5554 5555 public boolean shouldSendToSynthesizer() { 5556 if ((mFlags & FLAG_UNHANDLED) != 0) { 5557 return true; 5558 } 5559 5560 return false; 5561 } 5562 5563 @Override 5564 public String toString() { 5565 StringBuilder sb = new StringBuilder("QueuedInputEvent{flags="); 5566 boolean hasPrevious = false; 5567 hasPrevious = flagToString("DELIVER_POST_IME", FLAG_DELIVER_POST_IME, hasPrevious, sb); 5568 hasPrevious = flagToString("DEFERRED", FLAG_DEFERRED, hasPrevious, sb); 5569 hasPrevious = flagToString("FINISHED", FLAG_FINISHED, hasPrevious, sb); 5570 hasPrevious = flagToString("FINISHED_HANDLED", FLAG_FINISHED_HANDLED, hasPrevious, sb); 5571 hasPrevious = flagToString("RESYNTHESIZED", FLAG_RESYNTHESIZED, hasPrevious, sb); 5572 hasPrevious = flagToString("UNHANDLED", FLAG_UNHANDLED, hasPrevious, sb); 5573 if (!hasPrevious) { 5574 sb.append("0"); 5575 } 5576 sb.append(", hasNextQueuedEvent=" + (mEvent != null ? "true" : "false")); 5577 sb.append(", hasInputEventReceiver=" + (mReceiver != null ? "true" : "false")); 5578 sb.append(", mEvent=" + mEvent + "}"); 5579 return sb.toString(); 5580 } 5581 5582 private boolean flagToString(String name, int flag, 5583 boolean hasPrevious, StringBuilder sb) { 5584 if ((mFlags & flag) != 0) { 5585 if (hasPrevious) { 5586 sb.append("|"); 5587 } 5588 sb.append(name); 5589 return true; 5590 } 5591 return hasPrevious; 5592 } 5593 } 5594 5595 private QueuedInputEvent obtainQueuedInputEvent(InputEvent event, 5596 InputEventReceiver receiver, int flags) { 5597 QueuedInputEvent q = mQueuedInputEventPool; 5598 if (q != null) { 5599 mQueuedInputEventPoolSize -= 1; 5600 mQueuedInputEventPool = q.mNext; 5601 q.mNext = null; 5602 } else { 5603 q = new QueuedInputEvent(); 5604 } 5605 5606 q.mEvent = event; 5607 q.mReceiver = receiver; 5608 q.mFlags = flags; 5609 return q; 5610 } 5611 5612 private void recycleQueuedInputEvent(QueuedInputEvent q) { 5613 q.mEvent = null; 5614 q.mReceiver = null; 5615 5616 if (mQueuedInputEventPoolSize < MAX_QUEUED_INPUT_EVENT_POOL_SIZE) { 5617 mQueuedInputEventPoolSize += 1; 5618 q.mNext = mQueuedInputEventPool; 5619 mQueuedInputEventPool = q; 5620 } 5621 } 5622 5623 void enqueueInputEvent(InputEvent event) { 5624 enqueueInputEvent(event, null, 0, false); 5625 } 5626 5627 void enqueueInputEvent(InputEvent event, 5628 InputEventReceiver receiver, int flags, boolean processImmediately) { 5629 QueuedInputEvent q = obtainQueuedInputEvent(event, receiver, flags); 5630 5631 // Always enqueue the input event in order, regardless of its time stamp. 5632 // We do this because the application or the IME may inject key events 5633 // in response to touch events and we want to ensure that the injected keys 5634 // are processed in the order they were received and we cannot trust that 5635 // the time stamp of injected events are monotonic. 5636 QueuedInputEvent last = mPendingInputEventTail; 5637 if (last == null) { 5638 mPendingInputEventHead = q; 5639 mPendingInputEventTail = q; 5640 } else { 5641 last.mNext = q; 5642 mPendingInputEventTail = q; 5643 } 5644 mPendingInputEventCount += 1; 5645 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 5646 mPendingInputEventCount); 5647 5648 if (processImmediately) { 5649 doProcessInputEvents(); 5650 } else { 5651 scheduleProcessInputEvents(); 5652 } 5653 } 5654 5655 private void scheduleProcessInputEvents() { 5656 if (!mProcessInputEventsScheduled) { 5657 mProcessInputEventsScheduled = true; 5658 Message msg = mHandler.obtainMessage(MSG_PROCESS_INPUT_EVENTS); 5659 msg.setAsynchronous(true); 5660 mHandler.sendMessage(msg); 5661 } 5662 } 5663 5664 void doProcessInputEvents() { 5665 // Deliver all pending input events in the queue. 5666 while (mPendingInputEventHead != null) { 5667 QueuedInputEvent q = mPendingInputEventHead; 5668 mPendingInputEventHead = q.mNext; 5669 if (mPendingInputEventHead == null) { 5670 mPendingInputEventTail = null; 5671 } 5672 q.mNext = null; 5673 5674 mPendingInputEventCount -= 1; 5675 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 5676 mPendingInputEventCount); 5677 5678 deliverInputEvent(q); 5679 } 5680 5681 // We are done processing all input events that we can process right now 5682 // so we can clear the pending flag immediately. 5683 if (mProcessInputEventsScheduled) { 5684 mProcessInputEventsScheduled = false; 5685 mHandler.removeMessages(MSG_PROCESS_INPUT_EVENTS); 5686 } 5687 } 5688 5689 private void deliverInputEvent(QueuedInputEvent q) { 5690 Trace.asyncTraceBegin(Trace.TRACE_TAG_VIEW, "deliverInputEvent", 5691 q.mEvent.getSequenceNumber()); 5692 if (mInputEventConsistencyVerifier != null) { 5693 mInputEventConsistencyVerifier.onInputEvent(q.mEvent, 0); 5694 } 5695 5696 InputStage stage; 5697 if (q.shouldSendToSynthesizer()) { 5698 stage = mSyntheticInputStage; 5699 } else { 5700 stage = q.shouldSkipIme() ? mFirstPostImeInputStage : mFirstInputStage; 5701 } 5702 5703 if (stage != null) { 5704 stage.deliver(q); 5705 } else { 5706 finishInputEvent(q); 5707 } 5708 } 5709 5710 private void finishInputEvent(QueuedInputEvent q) { 5711 Trace.asyncTraceEnd(Trace.TRACE_TAG_VIEW, "deliverInputEvent", 5712 q.mEvent.getSequenceNumber()); 5713 5714 if (q.mReceiver != null) { 5715 boolean handled = (q.mFlags & QueuedInputEvent.FLAG_FINISHED_HANDLED) != 0; 5716 q.mReceiver.finishInputEvent(q.mEvent, handled); 5717 } else { 5718 q.mEvent.recycleIfNeededAfterDispatch(); 5719 } 5720 5721 recycleQueuedInputEvent(q); 5722 } 5723 5724 static boolean isTerminalInputEvent(InputEvent event) { 5725 if (event instanceof KeyEvent) { 5726 final KeyEvent keyEvent = (KeyEvent)event; 5727 return keyEvent.getAction() == KeyEvent.ACTION_UP; 5728 } else { 5729 final MotionEvent motionEvent = (MotionEvent)event; 5730 final int action = motionEvent.getAction(); 5731 return action == MotionEvent.ACTION_UP 5732 || action == MotionEvent.ACTION_CANCEL 5733 || action == MotionEvent.ACTION_HOVER_EXIT; 5734 } 5735 } 5736 5737 void scheduleConsumeBatchedInput() { 5738 if (!mConsumeBatchedInputScheduled) { 5739 mConsumeBatchedInputScheduled = true; 5740 mChoreographer.postCallback(Choreographer.CALLBACK_INPUT, 5741 mConsumedBatchedInputRunnable, null); 5742 } 5743 } 5744 5745 void unscheduleConsumeBatchedInput() { 5746 if (mConsumeBatchedInputScheduled) { 5747 mConsumeBatchedInputScheduled = false; 5748 mChoreographer.removeCallbacks(Choreographer.CALLBACK_INPUT, 5749 mConsumedBatchedInputRunnable, null); 5750 } 5751 } 5752 5753 void scheduleConsumeBatchedInputImmediately() { 5754 if (!mConsumeBatchedInputImmediatelyScheduled) { 5755 unscheduleConsumeBatchedInput(); 5756 mConsumeBatchedInputImmediatelyScheduled = true; 5757 mHandler.post(mConsumeBatchedInputImmediatelyRunnable); 5758 } 5759 } 5760 5761 void doConsumeBatchedInput(long frameTimeNanos) { 5762 if (mConsumeBatchedInputScheduled) { 5763 mConsumeBatchedInputScheduled = false; 5764 if (mInputEventReceiver != null) { 5765 if (mInputEventReceiver.consumeBatchedInputEvents(frameTimeNanos) 5766 && frameTimeNanos != -1) { 5767 // If we consumed a batch here, we want to go ahead and schedule the 5768 // consumption of batched input events on the next frame. Otherwise, we would 5769 // wait until we have more input events pending and might get starved by other 5770 // things occurring in the process. If the frame time is -1, however, then 5771 // we're in a non-batching mode, so there's no need to schedule this. 5772 scheduleConsumeBatchedInput(); 5773 } 5774 } 5775 doProcessInputEvents(); 5776 } 5777 } 5778 5779 final class TraversalRunnable implements Runnable { 5780 @Override 5781 public void run() { 5782 doTraversal(); 5783 } 5784 } 5785 final TraversalRunnable mTraversalRunnable = new TraversalRunnable(); 5786 5787 final class WindowInputEventReceiver extends InputEventReceiver { 5788 public WindowInputEventReceiver(InputChannel inputChannel, Looper looper) { 5789 super(inputChannel, looper); 5790 } 5791 5792 @Override 5793 public void onInputEvent(InputEvent event) { 5794 enqueueInputEvent(event, this, 0, true); 5795 } 5796 5797 @Override 5798 public void onBatchedInputEventPending() { 5799 if (mUnbufferedInputDispatch) { 5800 super.onBatchedInputEventPending(); 5801 } else { 5802 scheduleConsumeBatchedInput(); 5803 } 5804 } 5805 5806 @Override 5807 public void dispose() { 5808 unscheduleConsumeBatchedInput(); 5809 super.dispose(); 5810 } 5811 } 5812 WindowInputEventReceiver mInputEventReceiver; 5813 5814 final class ConsumeBatchedInputRunnable implements Runnable { 5815 @Override 5816 public void run() { 5817 doConsumeBatchedInput(mChoreographer.getFrameTimeNanos()); 5818 } 5819 } 5820 final ConsumeBatchedInputRunnable mConsumedBatchedInputRunnable = 5821 new ConsumeBatchedInputRunnable(); 5822 boolean mConsumeBatchedInputScheduled; 5823 5824 final class ConsumeBatchedInputImmediatelyRunnable implements Runnable { 5825 @Override 5826 public void run() { 5827 doConsumeBatchedInput(-1); 5828 } 5829 } 5830 final ConsumeBatchedInputImmediatelyRunnable mConsumeBatchedInputImmediatelyRunnable = 5831 new ConsumeBatchedInputImmediatelyRunnable(); 5832 boolean mConsumeBatchedInputImmediatelyScheduled; 5833 5834 final class InvalidateOnAnimationRunnable implements Runnable { 5835 private boolean mPosted; 5836 private final ArrayList<View> mViews = new ArrayList<View>(); 5837 private final ArrayList<AttachInfo.InvalidateInfo> mViewRects = 5838 new ArrayList<AttachInfo.InvalidateInfo>(); 5839 private View[] mTempViews; 5840 private AttachInfo.InvalidateInfo[] mTempViewRects; 5841 5842 public void addView(View view) { 5843 synchronized (this) { 5844 mViews.add(view); 5845 postIfNeededLocked(); 5846 } 5847 } 5848 5849 public void addViewRect(AttachInfo.InvalidateInfo info) { 5850 synchronized (this) { 5851 mViewRects.add(info); 5852 postIfNeededLocked(); 5853 } 5854 } 5855 5856 public void removeView(View view) { 5857 synchronized (this) { 5858 mViews.remove(view); 5859 5860 for (int i = mViewRects.size(); i-- > 0; ) { 5861 AttachInfo.InvalidateInfo info = mViewRects.get(i); 5862 if (info.target == view) { 5863 mViewRects.remove(i); 5864 info.recycle(); 5865 } 5866 } 5867 5868 if (mPosted && mViews.isEmpty() && mViewRects.isEmpty()) { 5869 mChoreographer.removeCallbacks(Choreographer.CALLBACK_ANIMATION, this, null); 5870 mPosted = false; 5871 } 5872 } 5873 } 5874 5875 @Override 5876 public void run() { 5877 final int viewCount; 5878 final int viewRectCount; 5879 synchronized (this) { 5880 mPosted = false; 5881 5882 viewCount = mViews.size(); 5883 if (viewCount != 0) { 5884 mTempViews = mViews.toArray(mTempViews != null 5885 ? mTempViews : new View[viewCount]); 5886 mViews.clear(); 5887 } 5888 5889 viewRectCount = mViewRects.size(); 5890 if (viewRectCount != 0) { 5891 mTempViewRects = mViewRects.toArray(mTempViewRects != null 5892 ? mTempViewRects : new AttachInfo.InvalidateInfo[viewRectCount]); 5893 mViewRects.clear(); 5894 } 5895 } 5896 5897 for (int i = 0; i < viewCount; i++) { 5898 mTempViews[i].invalidate(); 5899 mTempViews[i] = null; 5900 } 5901 5902 for (int i = 0; i < viewRectCount; i++) { 5903 final View.AttachInfo.InvalidateInfo info = mTempViewRects[i]; 5904 info.target.invalidate(info.left, info.top, info.right, info.bottom); 5905 info.recycle(); 5906 } 5907 } 5908 5909 private void postIfNeededLocked() { 5910 if (!mPosted) { 5911 mChoreographer.postCallback(Choreographer.CALLBACK_ANIMATION, this, null); 5912 mPosted = true; 5913 } 5914 } 5915 } 5916 final InvalidateOnAnimationRunnable mInvalidateOnAnimationRunnable = 5917 new InvalidateOnAnimationRunnable(); 5918 5919 public void dispatchInvalidateDelayed(View view, long delayMilliseconds) { 5920 Message msg = mHandler.obtainMessage(MSG_INVALIDATE, view); 5921 mHandler.sendMessageDelayed(msg, delayMilliseconds); 5922 } 5923 5924 public void dispatchInvalidateRectDelayed(AttachInfo.InvalidateInfo info, 5925 long delayMilliseconds) { 5926 final Message msg = mHandler.obtainMessage(MSG_INVALIDATE_RECT, info); 5927 mHandler.sendMessageDelayed(msg, delayMilliseconds); 5928 } 5929 5930 public void dispatchInvalidateOnAnimation(View view) { 5931 mInvalidateOnAnimationRunnable.addView(view); 5932 } 5933 5934 public void dispatchInvalidateRectOnAnimation(AttachInfo.InvalidateInfo info) { 5935 mInvalidateOnAnimationRunnable.addViewRect(info); 5936 } 5937 5938 public void cancelInvalidate(View view) { 5939 mHandler.removeMessages(MSG_INVALIDATE, view); 5940 // fixme: might leak the AttachInfo.InvalidateInfo objects instead of returning 5941 // them to the pool 5942 mHandler.removeMessages(MSG_INVALIDATE_RECT, view); 5943 mInvalidateOnAnimationRunnable.removeView(view); 5944 } 5945 5946 public void dispatchInputEvent(InputEvent event) { 5947 dispatchInputEvent(event, null); 5948 } 5949 5950 public void dispatchInputEvent(InputEvent event, InputEventReceiver receiver) { 5951 SomeArgs args = SomeArgs.obtain(); 5952 args.arg1 = event; 5953 args.arg2 = receiver; 5954 Message msg = mHandler.obtainMessage(MSG_DISPATCH_INPUT_EVENT, args); 5955 msg.setAsynchronous(true); 5956 mHandler.sendMessage(msg); 5957 } 5958 5959 public void synthesizeInputEvent(InputEvent event) { 5960 Message msg = mHandler.obtainMessage(MSG_SYNTHESIZE_INPUT_EVENT, event); 5961 msg.setAsynchronous(true); 5962 mHandler.sendMessage(msg); 5963 } 5964 5965 public void dispatchKeyFromIme(KeyEvent event) { 5966 Message msg = mHandler.obtainMessage(MSG_DISPATCH_KEY_FROM_IME, event); 5967 msg.setAsynchronous(true); 5968 mHandler.sendMessage(msg); 5969 } 5970 5971 /** 5972 * Reinject unhandled {@link InputEvent}s in order to synthesize fallbacks events. 5973 * 5974 * Note that it is the responsibility of the caller of this API to recycle the InputEvent it 5975 * passes in. 5976 */ 5977 public void dispatchUnhandledInputEvent(InputEvent event) { 5978 if (event instanceof MotionEvent) { 5979 event = MotionEvent.obtain((MotionEvent) event); 5980 } 5981 synthesizeInputEvent(event); 5982 } 5983 5984 public void dispatchAppVisibility(boolean visible) { 5985 Message msg = mHandler.obtainMessage(MSG_DISPATCH_APP_VISIBILITY); 5986 msg.arg1 = visible ? 1 : 0; 5987 mHandler.sendMessage(msg); 5988 } 5989 5990 public void dispatchGetNewSurface() { 5991 Message msg = mHandler.obtainMessage(MSG_DISPATCH_GET_NEW_SURFACE); 5992 mHandler.sendMessage(msg); 5993 } 5994 5995 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 5996 Message msg = Message.obtain(); 5997 msg.what = MSG_WINDOW_FOCUS_CHANGED; 5998 msg.arg1 = hasFocus ? 1 : 0; 5999 msg.arg2 = inTouchMode ? 1 : 0; 6000 mHandler.sendMessage(msg); 6001 } 6002 6003 public void dispatchCloseSystemDialogs(String reason) { 6004 Message msg = Message.obtain(); 6005 msg.what = MSG_CLOSE_SYSTEM_DIALOGS; 6006 msg.obj = reason; 6007 mHandler.sendMessage(msg); 6008 } 6009 6010 public void dispatchDragEvent(DragEvent event) { 6011 final int what; 6012 if (event.getAction() == DragEvent.ACTION_DRAG_LOCATION) { 6013 what = MSG_DISPATCH_DRAG_LOCATION_EVENT; 6014 mHandler.removeMessages(what); 6015 } else { 6016 what = MSG_DISPATCH_DRAG_EVENT; 6017 } 6018 Message msg = mHandler.obtainMessage(what, event); 6019 mHandler.sendMessage(msg); 6020 } 6021 6022 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 6023 int localValue, int localChanges) { 6024 SystemUiVisibilityInfo args = new SystemUiVisibilityInfo(); 6025 args.seq = seq; 6026 args.globalVisibility = globalVisibility; 6027 args.localValue = localValue; 6028 args.localChanges = localChanges; 6029 mHandler.sendMessage(mHandler.obtainMessage(MSG_DISPATCH_SYSTEM_UI_VISIBILITY, args)); 6030 } 6031 6032 public void dispatchDoneAnimating() { 6033 mHandler.sendEmptyMessage(MSG_DISPATCH_DONE_ANIMATING); 6034 } 6035 6036 public void dispatchCheckFocus() { 6037 if (!mHandler.hasMessages(MSG_CHECK_FOCUS)) { 6038 // This will result in a call to checkFocus() below. 6039 mHandler.sendEmptyMessage(MSG_CHECK_FOCUS); 6040 } 6041 } 6042 6043 /** 6044 * Post a callback to send a 6045 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 6046 * This event is send at most once every 6047 * {@link ViewConfiguration#getSendRecurringAccessibilityEventsInterval()}. 6048 */ 6049 private void postSendWindowContentChangedCallback(View source, int changeType) { 6050 if (mSendWindowContentChangedAccessibilityEvent == null) { 6051 mSendWindowContentChangedAccessibilityEvent = 6052 new SendWindowContentChangedAccessibilityEvent(); 6053 } 6054 mSendWindowContentChangedAccessibilityEvent.runOrPost(source, changeType); 6055 } 6056 6057 /** 6058 * Remove a posted callback to send a 6059 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 6060 */ 6061 private void removeSendWindowContentChangedCallback() { 6062 if (mSendWindowContentChangedAccessibilityEvent != null) { 6063 mHandler.removeCallbacks(mSendWindowContentChangedAccessibilityEvent); 6064 } 6065 } 6066 6067 @Override 6068 public boolean showContextMenuForChild(View originalView) { 6069 return false; 6070 } 6071 6072 @Override 6073 public ActionMode startActionModeForChild(View originalView, ActionMode.Callback callback) { 6074 return null; 6075 } 6076 6077 @Override 6078 public void createContextMenu(ContextMenu menu) { 6079 } 6080 6081 @Override 6082 public void childDrawableStateChanged(View child) { 6083 } 6084 6085 @Override 6086 public boolean requestSendAccessibilityEvent(View child, AccessibilityEvent event) { 6087 if (mView == null) { 6088 return false; 6089 } 6090 // Intercept accessibility focus events fired by virtual nodes to keep 6091 // track of accessibility focus position in such nodes. 6092 final int eventType = event.getEventType(); 6093 switch (eventType) { 6094 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUSED: { 6095 final long sourceNodeId = event.getSourceNodeId(); 6096 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 6097 sourceNodeId); 6098 View source = mView.findViewByAccessibilityId(accessibilityViewId); 6099 if (source != null) { 6100 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 6101 if (provider != null) { 6102 final int virtualNodeId = AccessibilityNodeInfo.getVirtualDescendantId( 6103 sourceNodeId); 6104 final AccessibilityNodeInfo node; 6105 if (virtualNodeId == AccessibilityNodeInfo.UNDEFINED_ITEM_ID) { 6106 node = provider.createAccessibilityNodeInfo( 6107 AccessibilityNodeProvider.HOST_VIEW_ID); 6108 } else { 6109 node = provider.createAccessibilityNodeInfo(virtualNodeId); 6110 } 6111 setAccessibilityFocus(source, node); 6112 } 6113 } 6114 } break; 6115 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUS_CLEARED: { 6116 final long sourceNodeId = event.getSourceNodeId(); 6117 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 6118 sourceNodeId); 6119 View source = mView.findViewByAccessibilityId(accessibilityViewId); 6120 if (source != null) { 6121 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 6122 if (provider != null) { 6123 setAccessibilityFocus(null, null); 6124 } 6125 } 6126 } break; 6127 6128 6129 case AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED: { 6130 if (mAccessibilityFocusedHost != null && mAccessibilityFocusedVirtualView != null) { 6131 // We care only for changes rooted in the focused host. 6132 final long eventSourceId = event.getSourceNodeId(); 6133 final int hostViewId = AccessibilityNodeInfo.getAccessibilityViewId( 6134 eventSourceId); 6135 if (hostViewId != mAccessibilityFocusedHost.getAccessibilityViewId()) { 6136 break; 6137 } 6138 6139 // We only care about changes that may change the virtual focused view bounds. 6140 final int changes = event.getContentChangeTypes(); 6141 if ((changes & AccessibilityEvent.CONTENT_CHANGE_TYPE_SUBTREE) != 0 6142 || changes == AccessibilityEvent.CONTENT_CHANGE_TYPE_UNDEFINED) { 6143 AccessibilityNodeProvider provider = mAccessibilityFocusedHost 6144 .getAccessibilityNodeProvider(); 6145 if (provider != null) { 6146 final int virtualChildId = AccessibilityNodeInfo.getVirtualDescendantId( 6147 mAccessibilityFocusedVirtualView.getSourceNodeId()); 6148 if (virtualChildId == AccessibilityNodeInfo.UNDEFINED_ITEM_ID) { 6149 mAccessibilityFocusedVirtualView = provider 6150 .createAccessibilityNodeInfo( 6151 AccessibilityNodeProvider.HOST_VIEW_ID); 6152 } else { 6153 mAccessibilityFocusedVirtualView = provider 6154 .createAccessibilityNodeInfo(virtualChildId); 6155 } 6156 } 6157 } 6158 } 6159 } break; 6160 } 6161 mAccessibilityManager.sendAccessibilityEvent(event); 6162 return true; 6163 } 6164 6165 @Override 6166 public void notifySubtreeAccessibilityStateChanged(View child, View source, int changeType) { 6167 postSendWindowContentChangedCallback(source, changeType); 6168 } 6169 6170 @Override 6171 public boolean canResolveLayoutDirection() { 6172 return true; 6173 } 6174 6175 @Override 6176 public boolean isLayoutDirectionResolved() { 6177 return true; 6178 } 6179 6180 @Override 6181 public int getLayoutDirection() { 6182 return View.LAYOUT_DIRECTION_RESOLVED_DEFAULT; 6183 } 6184 6185 @Override 6186 public boolean canResolveTextDirection() { 6187 return true; 6188 } 6189 6190 @Override 6191 public boolean isTextDirectionResolved() { 6192 return true; 6193 } 6194 6195 @Override 6196 public int getTextDirection() { 6197 return View.TEXT_DIRECTION_RESOLVED_DEFAULT; 6198 } 6199 6200 @Override 6201 public boolean canResolveTextAlignment() { 6202 return true; 6203 } 6204 6205 @Override 6206 public boolean isTextAlignmentResolved() { 6207 return true; 6208 } 6209 6210 @Override 6211 public int getTextAlignment() { 6212 return View.TEXT_ALIGNMENT_RESOLVED_DEFAULT; 6213 } 6214 6215 private View getCommonPredecessor(View first, View second) { 6216 if (mTempHashSet == null) { 6217 mTempHashSet = new HashSet<View>(); 6218 } 6219 HashSet<View> seen = mTempHashSet; 6220 seen.clear(); 6221 View firstCurrent = first; 6222 while (firstCurrent != null) { 6223 seen.add(firstCurrent); 6224 ViewParent firstCurrentParent = firstCurrent.mParent; 6225 if (firstCurrentParent instanceof View) { 6226 firstCurrent = (View) firstCurrentParent; 6227 } else { 6228 firstCurrent = null; 6229 } 6230 } 6231 View secondCurrent = second; 6232 while (secondCurrent != null) { 6233 if (seen.contains(secondCurrent)) { 6234 seen.clear(); 6235 return secondCurrent; 6236 } 6237 ViewParent secondCurrentParent = secondCurrent.mParent; 6238 if (secondCurrentParent instanceof View) { 6239 secondCurrent = (View) secondCurrentParent; 6240 } else { 6241 secondCurrent = null; 6242 } 6243 } 6244 seen.clear(); 6245 return null; 6246 } 6247 6248 void checkThread() { 6249 if (mThread != Thread.currentThread()) { 6250 throw new CalledFromWrongThreadException( 6251 "Only the original thread that created a view hierarchy can touch its views."); 6252 } 6253 } 6254 6255 @Override 6256 public void requestDisallowInterceptTouchEvent(boolean disallowIntercept) { 6257 // ViewAncestor never intercepts touch event, so this can be a no-op 6258 } 6259 6260 @Override 6261 public boolean requestChildRectangleOnScreen(View child, Rect rectangle, boolean immediate) { 6262 final boolean scrolled = scrollToRectOrFocus(rectangle, immediate); 6263 if (rectangle != null) { 6264 mTempRect.set(rectangle); 6265 mTempRect.offset(0, -mCurScrollY); 6266 mTempRect.offset(mAttachInfo.mWindowLeft, mAttachInfo.mWindowTop); 6267 try { 6268 mWindowSession.onRectangleOnScreenRequested(mWindow, mTempRect); 6269 } catch (RemoteException re) { 6270 /* ignore */ 6271 } 6272 } 6273 return scrolled; 6274 } 6275 6276 @Override 6277 public void childHasTransientStateChanged(View child, boolean hasTransientState) { 6278 // Do nothing. 6279 } 6280 6281 @Override 6282 public boolean onStartNestedScroll(View child, View target, int nestedScrollAxes) { 6283 return false; 6284 } 6285 6286 @Override 6287 public void onStopNestedScroll(View target) { 6288 } 6289 6290 @Override 6291 public void onNestedScrollAccepted(View child, View target, int nestedScrollAxes) { 6292 } 6293 6294 @Override 6295 public void onNestedScroll(View target, int dxConsumed, int dyConsumed, 6296 int dxUnconsumed, int dyUnconsumed) { 6297 } 6298 6299 @Override 6300 public void onNestedPreScroll(View target, int dx, int dy, int[] consumed) { 6301 } 6302 6303 @Override 6304 public boolean onNestedFling(View target, float velocityX, float velocityY, boolean consumed) { 6305 return false; 6306 } 6307 6308 @Override 6309 public boolean onNestedPreFling(View target, float velocityX, float velocityY) { 6310 return false; 6311 } 6312 6313 void changeCanvasOpacity(boolean opaque) { 6314 Log.d(TAG, "changeCanvasOpacity: opaque=" + opaque); 6315 if (mAttachInfo.mHardwareRenderer != null) { 6316 mAttachInfo.mHardwareRenderer.setOpaque(opaque); 6317 } 6318 } 6319 6320 class TakenSurfaceHolder extends BaseSurfaceHolder { 6321 @Override 6322 public boolean onAllowLockCanvas() { 6323 return mDrawingAllowed; 6324 } 6325 6326 @Override 6327 public void onRelayoutContainer() { 6328 // Not currently interesting -- from changing between fixed and layout size. 6329 } 6330 6331 @Override 6332 public void setFormat(int format) { 6333 ((RootViewSurfaceTaker)mView).setSurfaceFormat(format); 6334 } 6335 6336 @Override 6337 public void setType(int type) { 6338 ((RootViewSurfaceTaker)mView).setSurfaceType(type); 6339 } 6340 6341 @Override 6342 public void onUpdateSurface() { 6343 // We take care of format and type changes on our own. 6344 throw new IllegalStateException("Shouldn't be here"); 6345 } 6346 6347 @Override 6348 public boolean isCreating() { 6349 return mIsCreating; 6350 } 6351 6352 @Override 6353 public void setFixedSize(int width, int height) { 6354 throw new UnsupportedOperationException( 6355 "Currently only support sizing from layout"); 6356 } 6357 6358 @Override 6359 public void setKeepScreenOn(boolean screenOn) { 6360 ((RootViewSurfaceTaker)mView).setSurfaceKeepScreenOn(screenOn); 6361 } 6362 } 6363 6364 static class W extends IWindow.Stub { 6365 private final WeakReference<ViewRootImpl> mViewAncestor; 6366 private final IWindowSession mWindowSession; 6367 6368 W(ViewRootImpl viewAncestor) { 6369 mViewAncestor = new WeakReference<ViewRootImpl>(viewAncestor); 6370 mWindowSession = viewAncestor.mWindowSession; 6371 } 6372 6373 @Override 6374 public void resized(Rect frame, Rect overscanInsets, Rect contentInsets, 6375 Rect visibleInsets, Rect stableInsets, boolean reportDraw, 6376 Configuration newConfig) { 6377 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6378 if (viewAncestor != null) { 6379 viewAncestor.dispatchResized(frame, overscanInsets, contentInsets, 6380 visibleInsets, stableInsets, reportDraw, newConfig); 6381 } 6382 } 6383 6384 @Override 6385 public void moved(int newX, int newY) { 6386 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6387 if (viewAncestor != null) { 6388 viewAncestor.dispatchMoved(newX, newY); 6389 } 6390 } 6391 6392 @Override 6393 public void dispatchAppVisibility(boolean visible) { 6394 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6395 if (viewAncestor != null) { 6396 viewAncestor.dispatchAppVisibility(visible); 6397 } 6398 } 6399 6400 @Override 6401 public void dispatchGetNewSurface() { 6402 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6403 if (viewAncestor != null) { 6404 viewAncestor.dispatchGetNewSurface(); 6405 } 6406 } 6407 6408 @Override 6409 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 6410 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6411 if (viewAncestor != null) { 6412 viewAncestor.windowFocusChanged(hasFocus, inTouchMode); 6413 } 6414 } 6415 6416 private static int checkCallingPermission(String permission) { 6417 try { 6418 return ActivityManagerNative.getDefault().checkPermission( 6419 permission, Binder.getCallingPid(), Binder.getCallingUid()); 6420 } catch (RemoteException e) { 6421 return PackageManager.PERMISSION_DENIED; 6422 } 6423 } 6424 6425 @Override 6426 public void executeCommand(String command, String parameters, ParcelFileDescriptor out) { 6427 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6428 if (viewAncestor != null) { 6429 final View view = viewAncestor.mView; 6430 if (view != null) { 6431 if (checkCallingPermission(Manifest.permission.DUMP) != 6432 PackageManager.PERMISSION_GRANTED) { 6433 throw new SecurityException("Insufficient permissions to invoke" 6434 + " executeCommand() from pid=" + Binder.getCallingPid() 6435 + ", uid=" + Binder.getCallingUid()); 6436 } 6437 6438 OutputStream clientStream = null; 6439 try { 6440 clientStream = new ParcelFileDescriptor.AutoCloseOutputStream(out); 6441 ViewDebug.dispatchCommand(view, command, parameters, clientStream); 6442 } catch (IOException e) { 6443 e.printStackTrace(); 6444 } finally { 6445 if (clientStream != null) { 6446 try { 6447 clientStream.close(); 6448 } catch (IOException e) { 6449 e.printStackTrace(); 6450 } 6451 } 6452 } 6453 } 6454 } 6455 } 6456 6457 @Override 6458 public void closeSystemDialogs(String reason) { 6459 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6460 if (viewAncestor != null) { 6461 viewAncestor.dispatchCloseSystemDialogs(reason); 6462 } 6463 } 6464 6465 @Override 6466 public void dispatchWallpaperOffsets(float x, float y, float xStep, float yStep, 6467 boolean sync) { 6468 if (sync) { 6469 try { 6470 mWindowSession.wallpaperOffsetsComplete(asBinder()); 6471 } catch (RemoteException e) { 6472 } 6473 } 6474 } 6475 6476 @Override 6477 public void dispatchWallpaperCommand(String action, int x, int y, 6478 int z, Bundle extras, boolean sync) { 6479 if (sync) { 6480 try { 6481 mWindowSession.wallpaperCommandComplete(asBinder(), null); 6482 } catch (RemoteException e) { 6483 } 6484 } 6485 } 6486 6487 /* Drag/drop */ 6488 @Override 6489 public void dispatchDragEvent(DragEvent event) { 6490 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6491 if (viewAncestor != null) { 6492 viewAncestor.dispatchDragEvent(event); 6493 } 6494 } 6495 6496 @Override 6497 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 6498 int localValue, int localChanges) { 6499 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6500 if (viewAncestor != null) { 6501 viewAncestor.dispatchSystemUiVisibilityChanged(seq, globalVisibility, 6502 localValue, localChanges); 6503 } 6504 } 6505 6506 @Override 6507 public void doneAnimating() { 6508 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6509 if (viewAncestor != null) { 6510 viewAncestor.dispatchDoneAnimating(); 6511 } 6512 } 6513 } 6514 6515 public static final class CalledFromWrongThreadException extends AndroidRuntimeException { 6516 public CalledFromWrongThreadException(String msg) { 6517 super(msg); 6518 } 6519 } 6520 6521 static RunQueue getRunQueue() { 6522 RunQueue rq = sRunQueues.get(); 6523 if (rq != null) { 6524 return rq; 6525 } 6526 rq = new RunQueue(); 6527 sRunQueues.set(rq); 6528 return rq; 6529 } 6530 6531 /** 6532 * The run queue is used to enqueue pending work from Views when no Handler is 6533 * attached. The work is executed during the next call to performTraversals on 6534 * the thread. 6535 * @hide 6536 */ 6537 static final class RunQueue { 6538 private final ArrayList<HandlerAction> mActions = new ArrayList<HandlerAction>(); 6539 6540 void post(Runnable action) { 6541 postDelayed(action, 0); 6542 } 6543 6544 void postDelayed(Runnable action, long delayMillis) { 6545 HandlerAction handlerAction = new HandlerAction(); 6546 handlerAction.action = action; 6547 handlerAction.delay = delayMillis; 6548 6549 synchronized (mActions) { 6550 mActions.add(handlerAction); 6551 } 6552 } 6553 6554 void removeCallbacks(Runnable action) { 6555 final HandlerAction handlerAction = new HandlerAction(); 6556 handlerAction.action = action; 6557 6558 synchronized (mActions) { 6559 final ArrayList<HandlerAction> actions = mActions; 6560 6561 while (actions.remove(handlerAction)) { 6562 // Keep going 6563 } 6564 } 6565 } 6566 6567 void executeActions(Handler handler) { 6568 synchronized (mActions) { 6569 final ArrayList<HandlerAction> actions = mActions; 6570 final int count = actions.size(); 6571 6572 for (int i = 0; i < count; i++) { 6573 final HandlerAction handlerAction = actions.get(i); 6574 handler.postDelayed(handlerAction.action, handlerAction.delay); 6575 } 6576 6577 actions.clear(); 6578 } 6579 } 6580 6581 private static class HandlerAction { 6582 Runnable action; 6583 long delay; 6584 6585 @Override 6586 public boolean equals(Object o) { 6587 if (this == o) return true; 6588 if (o == null || getClass() != o.getClass()) return false; 6589 6590 HandlerAction that = (HandlerAction) o; 6591 return !(action != null ? !action.equals(that.action) : that.action != null); 6592 6593 } 6594 6595 @Override 6596 public int hashCode() { 6597 int result = action != null ? action.hashCode() : 0; 6598 result = 31 * result + (int) (delay ^ (delay >>> 32)); 6599 return result; 6600 } 6601 } 6602 } 6603 6604 /** 6605 * Class for managing the accessibility interaction connection 6606 * based on the global accessibility state. 6607 */ 6608 final class AccessibilityInteractionConnectionManager 6609 implements AccessibilityStateChangeListener { 6610 @Override 6611 public void onAccessibilityStateChanged(boolean enabled) { 6612 if (enabled) { 6613 ensureConnection(); 6614 if (mAttachInfo.mHasWindowFocus) { 6615 mView.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 6616 View focusedView = mView.findFocus(); 6617 if (focusedView != null && focusedView != mView) { 6618 focusedView.sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_FOCUSED); 6619 } 6620 } 6621 } else { 6622 ensureNoConnection(); 6623 mHandler.obtainMessage(MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST).sendToTarget(); 6624 } 6625 } 6626 6627 public void ensureConnection() { 6628 final boolean registered = 6629 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED_ITEM_ID; 6630 if (!registered) { 6631 mAttachInfo.mAccessibilityWindowId = 6632 mAccessibilityManager.addAccessibilityInteractionConnection(mWindow, 6633 new AccessibilityInteractionConnection(ViewRootImpl.this)); 6634 } 6635 } 6636 6637 public void ensureNoConnection() { 6638 final boolean registered = 6639 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED_ITEM_ID; 6640 if (registered) { 6641 mAttachInfo.mAccessibilityWindowId = AccessibilityNodeInfo.UNDEFINED_ITEM_ID; 6642 mAccessibilityManager.removeAccessibilityInteractionConnection(mWindow); 6643 } 6644 } 6645 } 6646 6647 final class HighContrastTextManager implements HighTextContrastChangeListener { 6648 HighContrastTextManager() { 6649 mAttachInfo.mHighContrastText = mAccessibilityManager.isHighTextContrastEnabled(); 6650 } 6651 @Override 6652 public void onHighTextContrastStateChanged(boolean enabled) { 6653 mAttachInfo.mHighContrastText = enabled; 6654 6655 // Destroy Displaylists so they can be recreated with high contrast recordings 6656 destroyHardwareResources(); 6657 6658 // Schedule redraw, which will rerecord + redraw all text 6659 invalidate(); 6660 } 6661 } 6662 6663 /** 6664 * This class is an interface this ViewAncestor provides to the 6665 * AccessibilityManagerService to the latter can interact with 6666 * the view hierarchy in this ViewAncestor. 6667 */ 6668 static final class AccessibilityInteractionConnection 6669 extends IAccessibilityInteractionConnection.Stub { 6670 private final WeakReference<ViewRootImpl> mViewRootImpl; 6671 6672 AccessibilityInteractionConnection(ViewRootImpl viewRootImpl) { 6673 mViewRootImpl = new WeakReference<ViewRootImpl>(viewRootImpl); 6674 } 6675 6676 @Override 6677 public void findAccessibilityNodeInfoByAccessibilityId(long accessibilityNodeId, 6678 Region interactiveRegion, int interactionId, 6679 IAccessibilityInteractionConnectionCallback callback, int flags, 6680 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6681 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6682 if (viewRootImpl != null && viewRootImpl.mView != null) { 6683 viewRootImpl.getAccessibilityInteractionController() 6684 .findAccessibilityNodeInfoByAccessibilityIdClientThread(accessibilityNodeId, 6685 interactiveRegion, interactionId, callback, flags, interrogatingPid, 6686 interrogatingTid, spec); 6687 } else { 6688 // We cannot make the call and notify the caller so it does not wait. 6689 try { 6690 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 6691 } catch (RemoteException re) { 6692 /* best effort - ignore */ 6693 } 6694 } 6695 } 6696 6697 @Override 6698 public void performAccessibilityAction(long accessibilityNodeId, int action, 6699 Bundle arguments, int interactionId, 6700 IAccessibilityInteractionConnectionCallback callback, int flags, 6701 int interrogatingPid, long interrogatingTid) { 6702 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6703 if (viewRootImpl != null && viewRootImpl.mView != null) { 6704 viewRootImpl.getAccessibilityInteractionController() 6705 .performAccessibilityActionClientThread(accessibilityNodeId, action, arguments, 6706 interactionId, callback, flags, interrogatingPid, interrogatingTid); 6707 } else { 6708 // We cannot make the call and notify the caller so it does not wait. 6709 try { 6710 callback.setPerformAccessibilityActionResult(false, interactionId); 6711 } catch (RemoteException re) { 6712 /* best effort - ignore */ 6713 } 6714 } 6715 } 6716 6717 @Override 6718 public void computeClickPointInScreen(long accessibilityNodeId, Region interactiveRegion, 6719 int interactionId, IAccessibilityInteractionConnectionCallback callback, 6720 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6721 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6722 if (viewRootImpl != null && viewRootImpl.mView != null) { 6723 viewRootImpl.getAccessibilityInteractionController() 6724 .computeClickPointInScreenClientThread(accessibilityNodeId, 6725 interactiveRegion, interactionId, callback, interrogatingPid, 6726 interrogatingTid, spec); 6727 } else { 6728 // We cannot make the call and notify the caller so it does not wait. 6729 try { 6730 callback.setComputeClickPointInScreenActionResult(null, interactionId); 6731 } catch (RemoteException re) { 6732 /* best effort - ignore */ 6733 } 6734 } 6735 } 6736 6737 @Override 6738 public void findAccessibilityNodeInfosByViewId(long accessibilityNodeId, 6739 String viewId, Region interactiveRegion, int interactionId, 6740 IAccessibilityInteractionConnectionCallback callback, int flags, 6741 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6742 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6743 if (viewRootImpl != null && viewRootImpl.mView != null) { 6744 viewRootImpl.getAccessibilityInteractionController() 6745 .findAccessibilityNodeInfosByViewIdClientThread(accessibilityNodeId, 6746 viewId, interactiveRegion, interactionId, callback, flags, 6747 interrogatingPid, interrogatingTid, spec); 6748 } else { 6749 // We cannot make the call and notify the caller so it does not wait. 6750 try { 6751 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6752 } catch (RemoteException re) { 6753 /* best effort - ignore */ 6754 } 6755 } 6756 } 6757 6758 @Override 6759 public void findAccessibilityNodeInfosByText(long accessibilityNodeId, String text, 6760 Region interactiveRegion, int interactionId, 6761 IAccessibilityInteractionConnectionCallback callback, int flags, 6762 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6763 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6764 if (viewRootImpl != null && viewRootImpl.mView != null) { 6765 viewRootImpl.getAccessibilityInteractionController() 6766 .findAccessibilityNodeInfosByTextClientThread(accessibilityNodeId, text, 6767 interactiveRegion, interactionId, callback, flags, interrogatingPid, 6768 interrogatingTid, spec); 6769 } else { 6770 // We cannot make the call and notify the caller so it does not wait. 6771 try { 6772 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 6773 } catch (RemoteException re) { 6774 /* best effort - ignore */ 6775 } 6776 } 6777 } 6778 6779 @Override 6780 public void findFocus(long accessibilityNodeId, int focusType, Region interactiveRegion, 6781 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 6782 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6783 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6784 if (viewRootImpl != null && viewRootImpl.mView != null) { 6785 viewRootImpl.getAccessibilityInteractionController() 6786 .findFocusClientThread(accessibilityNodeId, focusType, interactiveRegion, 6787 interactionId, callback, flags, interrogatingPid, interrogatingTid, 6788 spec); 6789 } else { 6790 // We cannot make the call and notify the caller so it does not wait. 6791 try { 6792 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6793 } catch (RemoteException re) { 6794 /* best effort - ignore */ 6795 } 6796 } 6797 } 6798 6799 @Override 6800 public void focusSearch(long accessibilityNodeId, int direction, Region interactiveRegion, 6801 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 6802 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6803 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6804 if (viewRootImpl != null && viewRootImpl.mView != null) { 6805 viewRootImpl.getAccessibilityInteractionController() 6806 .focusSearchClientThread(accessibilityNodeId, direction, interactiveRegion, 6807 interactionId, callback, flags, interrogatingPid, interrogatingTid, 6808 spec); 6809 } else { 6810 // We cannot make the call and notify the caller so it does not wait. 6811 try { 6812 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6813 } catch (RemoteException re) { 6814 /* best effort - ignore */ 6815 } 6816 } 6817 } 6818 } 6819 6820 private class SendWindowContentChangedAccessibilityEvent implements Runnable { 6821 private int mChangeTypes = 0; 6822 6823 public View mSource; 6824 public long mLastEventTimeMillis; 6825 6826 @Override 6827 public void run() { 6828 // The accessibility may be turned off while we were waiting so check again. 6829 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 6830 mLastEventTimeMillis = SystemClock.uptimeMillis(); 6831 AccessibilityEvent event = AccessibilityEvent.obtain(); 6832 event.setEventType(AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED); 6833 event.setContentChangeTypes(mChangeTypes); 6834 mSource.sendAccessibilityEventUnchecked(event); 6835 } else { 6836 mLastEventTimeMillis = 0; 6837 } 6838 // In any case reset to initial state. 6839 mSource.resetSubtreeAccessibilityStateChanged(); 6840 mSource = null; 6841 mChangeTypes = 0; 6842 } 6843 6844 public void runOrPost(View source, int changeType) { 6845 if (mSource != null) { 6846 // If there is no common predecessor, then mSource points to 6847 // a removed view, hence in this case always prefer the source. 6848 View predecessor = getCommonPredecessor(mSource, source); 6849 mSource = (predecessor != null) ? predecessor : source; 6850 mChangeTypes |= changeType; 6851 return; 6852 } 6853 mSource = source; 6854 mChangeTypes = changeType; 6855 final long timeSinceLastMillis = SystemClock.uptimeMillis() - mLastEventTimeMillis; 6856 final long minEventIntevalMillis = 6857 ViewConfiguration.getSendRecurringAccessibilityEventsInterval(); 6858 if (timeSinceLastMillis >= minEventIntevalMillis) { 6859 mSource.removeCallbacks(this); 6860 run(); 6861 } else { 6862 mSource.postDelayed(this, minEventIntevalMillis - timeSinceLastMillis); 6863 } 6864 } 6865 } 6866} 6867