ViewRootImpl.java revision df813c03b16ed32c25a8c8fee82a7a98088ac940
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.animation.ValueAnimator; 22import android.app.ActivityManagerNative; 23import android.content.ClipDescription; 24import android.content.ComponentCallbacks; 25import android.content.ComponentCallbacks2; 26import android.content.Context; 27import android.content.pm.ApplicationInfo; 28import android.content.pm.PackageManager; 29import android.content.res.CompatibilityInfo; 30import android.content.res.Configuration; 31import android.content.res.Resources; 32import android.graphics.Canvas; 33import android.graphics.Paint; 34import android.graphics.PixelFormat; 35import android.graphics.Point; 36import android.graphics.PointF; 37import android.graphics.PorterDuff; 38import android.graphics.Rect; 39import android.graphics.Region; 40import android.media.AudioManager; 41import android.os.Binder; 42import android.os.Bundle; 43import android.os.Debug; 44import android.os.Handler; 45import android.os.LatencyTimer; 46import android.os.Looper; 47import android.os.Message; 48import android.os.ParcelFileDescriptor; 49import android.os.PowerManager; 50import android.os.Process; 51import android.os.RemoteException; 52import android.os.SystemClock; 53import android.os.SystemProperties; 54import android.util.AndroidRuntimeException; 55import android.util.DisplayMetrics; 56import android.util.EventLog; 57import android.util.Log; 58import android.util.Pool; 59import android.util.Poolable; 60import android.util.PoolableManager; 61import android.util.Pools; 62import android.util.Slog; 63import android.util.SparseLongArray; 64import android.util.TypedValue; 65import android.view.View.AttachInfo; 66import android.view.View.MeasureSpec; 67import android.view.accessibility.AccessibilityEvent; 68import android.view.accessibility.AccessibilityInteractionClient; 69import android.view.accessibility.AccessibilityManager; 70import android.view.accessibility.AccessibilityManager.AccessibilityStateChangeListener; 71import android.view.accessibility.AccessibilityNodeInfo; 72import android.view.accessibility.AccessibilityNodeProvider; 73import android.view.accessibility.IAccessibilityInteractionConnection; 74import android.view.accessibility.IAccessibilityInteractionConnectionCallback; 75import android.view.animation.AccelerateDecelerateInterpolator; 76import android.view.animation.Interpolator; 77import android.view.inputmethod.InputConnection; 78import android.view.inputmethod.InputMethodManager; 79import android.widget.Scroller; 80 81import com.android.internal.policy.PolicyManager; 82import com.android.internal.view.BaseSurfaceHolder; 83import com.android.internal.view.IInputMethodCallback; 84import com.android.internal.view.IInputMethodSession; 85import com.android.internal.view.RootViewSurfaceTaker; 86 87import java.io.IOException; 88import java.io.OutputStream; 89import java.lang.ref.WeakReference; 90import java.util.ArrayList; 91import java.util.HashMap; 92import java.util.List; 93import java.util.Map; 94 95/** 96 * The top of a view hierarchy, implementing the needed protocol between View 97 * and the WindowManager. This is for the most part an internal implementation 98 * detail of {@link WindowManagerImpl}. 99 * 100 * {@hide} 101 */ 102@SuppressWarnings({"EmptyCatchBlock", "PointlessBooleanExpression"}) 103public final class ViewRootImpl implements ViewParent, 104 View.AttachInfo.Callbacks, HardwareRenderer.HardwareDrawCallbacks { 105 private static final String TAG = "ViewRootImpl"; 106 private static final boolean DBG = false; 107 private static final boolean LOCAL_LOGV = false; 108 /** @noinspection PointlessBooleanExpression*/ 109 private static final boolean DEBUG_DRAW = false || LOCAL_LOGV; 110 private static final boolean DEBUG_LAYOUT = false || LOCAL_LOGV; 111 private static final boolean DEBUG_DIALOG = false || LOCAL_LOGV; 112 private static final boolean DEBUG_INPUT_RESIZE = false || LOCAL_LOGV; 113 private static final boolean DEBUG_ORIENTATION = false || LOCAL_LOGV; 114 private static final boolean DEBUG_TRACKBALL = false || LOCAL_LOGV; 115 private static final boolean DEBUG_IMF = false || LOCAL_LOGV; 116 private static final boolean DEBUG_CONFIGURATION = false || LOCAL_LOGV; 117 private static final boolean DEBUG_FPS = false; 118 119 /** 120 * Set this system property to true to force the view hierarchy to render 121 * at 60 Hz. This can be used to measure the potential framerate. 122 */ 123 private static final String PROPERTY_PROFILE_RENDERING = "viewancestor.profile_rendering"; 124 125 private static final boolean MEASURE_LATENCY = false; 126 private static LatencyTimer lt; 127 128 /** 129 * Maximum time we allow the user to roll the trackball enough to generate 130 * a key event, before resetting the counters. 131 */ 132 static final int MAX_TRACKBALL_DELAY = 250; 133 134 static IWindowSession sWindowSession; 135 136 static final Object mStaticInit = new Object(); 137 static boolean mInitialized = false; 138 139 static final ThreadLocal<RunQueue> sRunQueues = new ThreadLocal<RunQueue>(); 140 141 static final ArrayList<Runnable> sFirstDrawHandlers = new ArrayList<Runnable>(); 142 static boolean sFirstDrawComplete = false; 143 144 static final ArrayList<ComponentCallbacks> sConfigCallbacks 145 = new ArrayList<ComponentCallbacks>(); 146 147 private static boolean sUseRenderThread = false; 148 private static boolean sRenderThreadQueried = false; 149 private static final Object[] sRenderThreadQueryLock = new Object[0]; 150 151 long mLastTrackballTime = 0; 152 final TrackballAxis mTrackballAxisX = new TrackballAxis(); 153 final TrackballAxis mTrackballAxisY = new TrackballAxis(); 154 155 int mLastJoystickXDirection; 156 int mLastJoystickYDirection; 157 int mLastJoystickXKeyCode; 158 int mLastJoystickYKeyCode; 159 160 final int[] mTmpLocation = new int[2]; 161 162 final TypedValue mTmpValue = new TypedValue(); 163 164 final InputMethodCallback mInputMethodCallback; 165 final Thread mThread; 166 167 final WindowLeaked mLocation; 168 169 final WindowManager.LayoutParams mWindowAttributes = new WindowManager.LayoutParams(); 170 171 final W mWindow; 172 173 final int mTargetSdkVersion; 174 175 int mSeq; 176 177 View mView; 178 View mFocusedView; 179 View mRealFocusedView; // this is not set to null in touch mode 180 View mOldFocusedView; 181 int mViewVisibility; 182 boolean mAppVisible = true; 183 int mOrigWindowType = -1; 184 185 // Set to true if the owner of this window is in the stopped state, 186 // so the window should no longer be active. 187 boolean mStopped = false; 188 189 boolean mLastInCompatMode = false; 190 191 SurfaceHolder.Callback2 mSurfaceHolderCallback; 192 BaseSurfaceHolder mSurfaceHolder; 193 boolean mIsCreating; 194 boolean mDrawingAllowed; 195 196 final Region mTransparentRegion; 197 final Region mPreviousTransparentRegion; 198 199 int mWidth; 200 int mHeight; 201 Rect mDirty; 202 final Rect mCurrentDirty = new Rect(); 203 final Rect mPreviousDirty = new Rect(); 204 boolean mIsAnimating; 205 206 CompatibilityInfo.Translator mTranslator; 207 208 final View.AttachInfo mAttachInfo; 209 InputChannel mInputChannel; 210 InputQueue.Callback mInputQueueCallback; 211 InputQueue mInputQueue; 212 FallbackEventHandler mFallbackEventHandler; 213 Choreographer mChoreographer; 214 215 final Rect mTempRect; // used in the transaction to not thrash the heap. 216 final Rect mVisRect; // used to retrieve visible rect of focused view. 217 218 boolean mTraversalScheduled; 219 int mTraversalBarrier; 220 long mLastTraversalFinishedTimeNanos; 221 long mLastDrawFinishedTimeNanos; 222 boolean mWillDrawSoon; 223 boolean mLayoutRequested; 224 boolean mFirst; 225 boolean mReportNextDraw; 226 boolean mFullRedrawNeeded; 227 boolean mNewSurfaceNeeded; 228 boolean mHasHadWindowFocus; 229 boolean mLastWasImTarget; 230 231 // Pool of queued input events. 232 private static final int MAX_QUEUED_INPUT_EVENT_POOL_SIZE = 10; 233 private QueuedInputEvent mQueuedInputEventPool; 234 private int mQueuedInputEventPoolSize; 235 236 // Input event queue. 237 QueuedInputEvent mFirstPendingInputEvent; 238 QueuedInputEvent mCurrentInputEvent; 239 boolean mProcessInputEventsScheduled; 240 241 boolean mWindowAttributesChanged = false; 242 int mWindowAttributesChangesFlag = 0; 243 244 // These can be accessed by any thread, must be protected with a lock. 245 // Surface can never be reassigned or cleared (use Surface.clear()). 246 private final Surface mSurface = new Surface(); 247 248 boolean mAdded; 249 boolean mAddedTouchMode; 250 251 CompatibilityInfoHolder mCompatibilityInfo; 252 253 /*package*/ int mAddNesting; 254 255 // These are accessed by multiple threads. 256 final Rect mWinFrame; // frame given by window manager. 257 258 final Rect mPendingVisibleInsets = new Rect(); 259 final Rect mPendingContentInsets = new Rect(); 260 final ViewTreeObserver.InternalInsetsInfo mLastGivenInsets 261 = new ViewTreeObserver.InternalInsetsInfo(); 262 263 final Configuration mLastConfiguration = new Configuration(); 264 final Configuration mPendingConfiguration = new Configuration(); 265 266 class ResizedInfo { 267 Rect coveredInsets; 268 Rect visibleInsets; 269 Configuration newConfig; 270 } 271 272 boolean mScrollMayChange; 273 int mSoftInputMode; 274 View mLastScrolledFocus; 275 int mScrollY; 276 int mCurScrollY; 277 Scroller mScroller; 278 HardwareLayer mResizeBuffer; 279 long mResizeBufferStartTime; 280 int mResizeBufferDuration; 281 static final Interpolator mResizeInterpolator = new AccelerateDecelerateInterpolator(); 282 private ArrayList<LayoutTransition> mPendingTransitions; 283 284 final ViewConfiguration mViewConfiguration; 285 286 /* Drag/drop */ 287 ClipDescription mDragDescription; 288 View mCurrentDragView; 289 volatile Object mLocalDragState; 290 final PointF mDragPoint = new PointF(); 291 final PointF mLastTouchPoint = new PointF(); 292 293 private boolean mProfileRendering; 294 private Thread mRenderProfiler; 295 private volatile boolean mRenderProfilingEnabled; 296 297 // Variables to track frames per second, enabled via DEBUG_FPS flag 298 private long mFpsStartTime = -1; 299 private long mFpsPrevTime = -1; 300 private int mFpsNumFrames; 301 302 /** 303 * see {@link #playSoundEffect(int)} 304 */ 305 AudioManager mAudioManager; 306 307 final AccessibilityManager mAccessibilityManager; 308 309 AccessibilityInteractionController mAccessibilityInteractionController; 310 311 AccessibilityInteractionConnectionManager mAccessibilityInteractionConnectionManager; 312 313 SendWindowContentChangedAccessibilityEvent mSendWindowContentChangedAccessibilityEvent; 314 315 AccessibilityNodePrefetcher mAccessibilityNodePrefetcher; 316 317 private final int mDensity; 318 319 /** 320 * Consistency verifier for debugging purposes. 321 */ 322 protected final InputEventConsistencyVerifier mInputEventConsistencyVerifier = 323 InputEventConsistencyVerifier.isInstrumentationEnabled() ? 324 new InputEventConsistencyVerifier(this, 0) : null; 325 326 public static IWindowSession getWindowSession(Looper mainLooper) { 327 synchronized (mStaticInit) { 328 if (!mInitialized) { 329 try { 330 InputMethodManager imm = InputMethodManager.getInstance(mainLooper); 331 IWindowManager windowManager = Display.getWindowManager(); 332 sWindowSession = windowManager.openSession( 333 imm.getClient(), imm.getInputContext()); 334 float animatorScale = windowManager.getAnimationScale(2); 335 ValueAnimator.setDurationScale(animatorScale); 336 mInitialized = true; 337 } catch (RemoteException e) { 338 } 339 } 340 return sWindowSession; 341 } 342 } 343 344 static final class SystemUiVisibilityInfo { 345 int seq; 346 int globalVisibility; 347 int localValue; 348 int localChanges; 349 } 350 351 public ViewRootImpl(Context context) { 352 super(); 353 354 if (MEASURE_LATENCY) { 355 if (lt == null) { 356 lt = new LatencyTimer(100, 1000); 357 } 358 } 359 360 // Initialize the statics when this class is first instantiated. This is 361 // done here instead of in the static block because Zygote does not 362 // allow the spawning of threads. 363 getWindowSession(context.getMainLooper()); 364 365 mThread = Thread.currentThread(); 366 mLocation = new WindowLeaked(null); 367 mLocation.fillInStackTrace(); 368 mWidth = -1; 369 mHeight = -1; 370 mDirty = new Rect(); 371 mTempRect = new Rect(); 372 mVisRect = new Rect(); 373 mWinFrame = new Rect(); 374 mWindow = new W(this); 375 mTargetSdkVersion = context.getApplicationInfo().targetSdkVersion; 376 mInputMethodCallback = new InputMethodCallback(this); 377 mViewVisibility = View.GONE; 378 mTransparentRegion = new Region(); 379 mPreviousTransparentRegion = new Region(); 380 mFirst = true; // true for the first time the view is added 381 mAdded = false; 382 mAccessibilityManager = AccessibilityManager.getInstance(context); 383 mAccessibilityInteractionConnectionManager = 384 new AccessibilityInteractionConnectionManager(); 385 mAccessibilityManager.addAccessibilityStateChangeListener( 386 mAccessibilityInteractionConnectionManager); 387 mAttachInfo = new View.AttachInfo(sWindowSession, mWindow, this, mHandler, this); 388 mViewConfiguration = ViewConfiguration.get(context); 389 mDensity = context.getResources().getDisplayMetrics().densityDpi; 390 mFallbackEventHandler = PolicyManager.makeNewFallbackEventHandler(context); 391 mProfileRendering = Boolean.parseBoolean( 392 SystemProperties.get(PROPERTY_PROFILE_RENDERING, "false")); 393 mChoreographer = Choreographer.getInstance(); 394 395 PowerManager powerManager = (PowerManager) context.getSystemService(Context.POWER_SERVICE); 396 mAttachInfo.mScreenOn = powerManager.isScreenOn(); 397 } 398 399 /** 400 * @return True if the application requests the use of a separate render thread, 401 * false otherwise 402 */ 403 private static boolean isRenderThreadRequested(Context context) { 404 synchronized (sRenderThreadQueryLock) { 405 if (!sRenderThreadQueried) { 406 final PackageManager packageManager = context.getPackageManager(); 407 final String packageName = context.getApplicationInfo().packageName; 408 try { 409 ApplicationInfo applicationInfo = packageManager.getApplicationInfo(packageName, 410 PackageManager.GET_META_DATA); 411 if (applicationInfo.metaData != null) { 412 sUseRenderThread = applicationInfo.metaData.getBoolean( 413 "android.graphics.renderThread", false); 414 } 415 } catch (PackageManager.NameNotFoundException e) { 416 } finally { 417 sRenderThreadQueried = true; 418 } 419 } 420 return sUseRenderThread; 421 } 422 } 423 424 public static void addFirstDrawHandler(Runnable callback) { 425 synchronized (sFirstDrawHandlers) { 426 if (!sFirstDrawComplete) { 427 sFirstDrawHandlers.add(callback); 428 } 429 } 430 } 431 432 public static void addConfigCallback(ComponentCallbacks callback) { 433 synchronized (sConfigCallbacks) { 434 sConfigCallbacks.add(callback); 435 } 436 } 437 438 // FIXME for perf testing only 439 private boolean mProfile = false; 440 441 /** 442 * Call this to profile the next traversal call. 443 * FIXME for perf testing only. Remove eventually 444 */ 445 public void profile() { 446 mProfile = true; 447 } 448 449 /** 450 * Indicates whether we are in touch mode. Calling this method triggers an IPC 451 * call and should be avoided whenever possible. 452 * 453 * @return True, if the device is in touch mode, false otherwise. 454 * 455 * @hide 456 */ 457 static boolean isInTouchMode() { 458 if (mInitialized) { 459 try { 460 return sWindowSession.getInTouchMode(); 461 } catch (RemoteException e) { 462 } 463 } 464 return false; 465 } 466 467 /** 468 * We have one child 469 */ 470 public void setView(View view, WindowManager.LayoutParams attrs, View panelParentView) { 471 synchronized (this) { 472 if (mView == null) { 473 mView = view; 474 mFallbackEventHandler.setView(view); 475 mWindowAttributes.copyFrom(attrs); 476 attrs = mWindowAttributes; 477 478 if (view instanceof RootViewSurfaceTaker) { 479 mSurfaceHolderCallback = 480 ((RootViewSurfaceTaker)view).willYouTakeTheSurface(); 481 if (mSurfaceHolderCallback != null) { 482 mSurfaceHolder = new TakenSurfaceHolder(); 483 mSurfaceHolder.setFormat(PixelFormat.UNKNOWN); 484 } 485 } 486 487 CompatibilityInfo compatibilityInfo = mCompatibilityInfo.get(); 488 mTranslator = compatibilityInfo.getTranslator(); 489 490 // If the application owns the surface, don't enable hardware acceleration 491 if (mSurfaceHolder == null) { 492 enableHardwareAcceleration(mView.getContext(), attrs); 493 } 494 495 boolean restore = false; 496 if (mTranslator != null) { 497 mSurface.setCompatibilityTranslator(mTranslator); 498 restore = true; 499 attrs.backup(); 500 mTranslator.translateWindowLayout(attrs); 501 } 502 if (DEBUG_LAYOUT) Log.d(TAG, "WindowLayout in setView:" + attrs); 503 504 if (!compatibilityInfo.supportsScreen()) { 505 attrs.flags |= WindowManager.LayoutParams.FLAG_COMPATIBLE_WINDOW; 506 mLastInCompatMode = true; 507 } 508 509 mSoftInputMode = attrs.softInputMode; 510 mWindowAttributesChanged = true; 511 mWindowAttributesChangesFlag = WindowManager.LayoutParams.EVERYTHING_CHANGED; 512 mAttachInfo.mRootView = view; 513 mAttachInfo.mScalingRequired = mTranslator != null; 514 mAttachInfo.mApplicationScale = 515 mTranslator == null ? 1.0f : mTranslator.applicationScale; 516 if (panelParentView != null) { 517 mAttachInfo.mPanelParentWindowToken 518 = panelParentView.getApplicationWindowToken(); 519 } 520 mAdded = true; 521 int res; /* = WindowManagerImpl.ADD_OKAY; */ 522 523 // Schedule the first layout -before- adding to the window 524 // manager, to make sure we do the relayout before receiving 525 // any other events from the system. 526 requestLayout(); 527 if ((mWindowAttributes.inputFeatures 528 & WindowManager.LayoutParams.INPUT_FEATURE_NO_INPUT_CHANNEL) == 0) { 529 mInputChannel = new InputChannel(); 530 } 531 try { 532 mOrigWindowType = mWindowAttributes.type; 533 res = sWindowSession.add(mWindow, mSeq, mWindowAttributes, 534 getHostVisibility(), mAttachInfo.mContentInsets, 535 mInputChannel); 536 } catch (RemoteException e) { 537 mAdded = false; 538 mView = null; 539 mAttachInfo.mRootView = null; 540 mInputChannel = null; 541 mFallbackEventHandler.setView(null); 542 unscheduleTraversals(); 543 throw new RuntimeException("Adding window failed", e); 544 } finally { 545 if (restore) { 546 attrs.restore(); 547 } 548 } 549 550 if (mTranslator != null) { 551 mTranslator.translateRectInScreenToAppWindow(mAttachInfo.mContentInsets); 552 } 553 mPendingContentInsets.set(mAttachInfo.mContentInsets); 554 mPendingVisibleInsets.set(0, 0, 0, 0); 555 if (DEBUG_LAYOUT) Log.v(TAG, "Added window " + mWindow); 556 if (res < WindowManagerImpl.ADD_OKAY) { 557 mView = null; 558 mAttachInfo.mRootView = null; 559 mAdded = false; 560 mFallbackEventHandler.setView(null); 561 unscheduleTraversals(); 562 switch (res) { 563 case WindowManagerImpl.ADD_BAD_APP_TOKEN: 564 case WindowManagerImpl.ADD_BAD_SUBWINDOW_TOKEN: 565 throw new WindowManagerImpl.BadTokenException( 566 "Unable to add window -- token " + attrs.token 567 + " is not valid; is your activity running?"); 568 case WindowManagerImpl.ADD_NOT_APP_TOKEN: 569 throw new WindowManagerImpl.BadTokenException( 570 "Unable to add window -- token " + attrs.token 571 + " is not for an application"); 572 case WindowManagerImpl.ADD_APP_EXITING: 573 throw new WindowManagerImpl.BadTokenException( 574 "Unable to add window -- app for token " + attrs.token 575 + " is exiting"); 576 case WindowManagerImpl.ADD_DUPLICATE_ADD: 577 throw new WindowManagerImpl.BadTokenException( 578 "Unable to add window -- window " + mWindow 579 + " has already been added"); 580 case WindowManagerImpl.ADD_STARTING_NOT_NEEDED: 581 // Silently ignore -- we would have just removed it 582 // right away, anyway. 583 return; 584 case WindowManagerImpl.ADD_MULTIPLE_SINGLETON: 585 throw new WindowManagerImpl.BadTokenException( 586 "Unable to add window " + mWindow + 587 " -- another window of this type already exists"); 588 case WindowManagerImpl.ADD_PERMISSION_DENIED: 589 throw new WindowManagerImpl.BadTokenException( 590 "Unable to add window " + mWindow + 591 " -- permission denied for this window type"); 592 } 593 throw new RuntimeException( 594 "Unable to add window -- unknown error code " + res); 595 } 596 597 if (view instanceof RootViewSurfaceTaker) { 598 mInputQueueCallback = 599 ((RootViewSurfaceTaker)view).willYouTakeTheInputQueue(); 600 } 601 if (mInputChannel != null) { 602 if (mInputQueueCallback != null) { 603 mInputQueue = new InputQueue(mInputChannel); 604 mInputQueueCallback.onInputQueueCreated(mInputQueue); 605 } else { 606 mInputEventReceiver = new WindowInputEventReceiver(mInputChannel, 607 Looper.myLooper()); 608 } 609 } 610 611 view.assignParent(this); 612 mAddedTouchMode = (res&WindowManagerImpl.ADD_FLAG_IN_TOUCH_MODE) != 0; 613 mAppVisible = (res&WindowManagerImpl.ADD_FLAG_APP_VISIBLE) != 0; 614 615 if (mAccessibilityManager.isEnabled()) { 616 mAccessibilityInteractionConnectionManager.ensureConnection(); 617 } 618 } 619 } 620 } 621 622 void destroyHardwareResources() { 623 if (mAttachInfo.mHardwareRenderer != null) { 624 if (mAttachInfo.mHardwareRenderer.isEnabled()) { 625 mAttachInfo.mHardwareRenderer.destroyLayers(mView); 626 } 627 mAttachInfo.mHardwareRenderer.destroy(false); 628 } 629 } 630 631 void terminateHardwareResources() { 632 if (mAttachInfo.mHardwareRenderer != null) { 633 mAttachInfo.mHardwareRenderer.destroyHardwareResources(mView); 634 mAttachInfo.mHardwareRenderer.destroy(false); 635 } 636 } 637 638 void destroyHardwareLayers() { 639 if (mThread != Thread.currentThread()) { 640 if (mAttachInfo.mHardwareRenderer != null && 641 mAttachInfo.mHardwareRenderer.isEnabled()) { 642 HardwareRenderer.trimMemory(ComponentCallbacks2.TRIM_MEMORY_MODERATE); 643 } 644 } else { 645 if (mAttachInfo.mHardwareRenderer != null && 646 mAttachInfo.mHardwareRenderer.isEnabled()) { 647 mAttachInfo.mHardwareRenderer.destroyLayers(mView); 648 } 649 } 650 } 651 652 private void enableHardwareAcceleration(Context context, WindowManager.LayoutParams attrs) { 653 mAttachInfo.mHardwareAccelerated = false; 654 mAttachInfo.mHardwareAccelerationRequested = false; 655 656 // Don't enable hardware acceleration when the application is in compatibility mode 657 if (mTranslator != null) return; 658 659 // Try to enable hardware acceleration if requested 660 final boolean hardwareAccelerated = 661 (attrs.flags & WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED) != 0; 662 663 if (hardwareAccelerated) { 664 if (!HardwareRenderer.isAvailable()) { 665 return; 666 } 667 668 // Persistent processes (including the system) should not do 669 // accelerated rendering on low-end devices. In that case, 670 // sRendererDisabled will be set. In addition, the system process 671 // itself should never do accelerated rendering. In that case, both 672 // sRendererDisabled and sSystemRendererDisabled are set. When 673 // sSystemRendererDisabled is set, PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED 674 // can be used by code on the system process to escape that and enable 675 // HW accelerated drawing. (This is basically for the lock screen.) 676 677 final boolean fakeHwAccelerated = (attrs.privateFlags & 678 WindowManager.LayoutParams.PRIVATE_FLAG_FAKE_HARDWARE_ACCELERATED) != 0; 679 final boolean forceHwAccelerated = (attrs.privateFlags & 680 WindowManager.LayoutParams.PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED) != 0; 681 682 if (!HardwareRenderer.sRendererDisabled || (HardwareRenderer.sSystemRendererDisabled 683 && forceHwAccelerated)) { 684 // Don't enable hardware acceleration when we're not on the main thread 685 if (!HardwareRenderer.sSystemRendererDisabled && 686 Looper.getMainLooper() != Looper.myLooper()) { 687 Log.w(HardwareRenderer.LOG_TAG, "Attempting to initialize hardware " 688 + "acceleration outside of the main thread, aborting"); 689 return; 690 } 691 692 boolean renderThread = isRenderThreadRequested(context); 693 if (renderThread) { 694 Log.i(HardwareRenderer.LOG_TAG, "Render threat initiated"); 695 } 696 697 if (mAttachInfo.mHardwareRenderer != null) { 698 mAttachInfo.mHardwareRenderer.destroy(true); 699 } 700 701 final boolean translucent = attrs.format != PixelFormat.OPAQUE; 702 mAttachInfo.mHardwareRenderer = HardwareRenderer.createGlRenderer(2, translucent); 703 mAttachInfo.mHardwareAccelerated = mAttachInfo.mHardwareAccelerationRequested 704 = mAttachInfo.mHardwareRenderer != null; 705 706 } else if (fakeHwAccelerated) { 707 // The window had wanted to use hardware acceleration, but this 708 // is not allowed in its process. By setting this flag, it can 709 // still render as if it was accelerated. This is basically for 710 // the preview windows the window manager shows for launching 711 // applications, so they will look more like the app being launched. 712 mAttachInfo.mHardwareAccelerationRequested = true; 713 } 714 } 715 } 716 717 public View getView() { 718 return mView; 719 } 720 721 final WindowLeaked getLocation() { 722 return mLocation; 723 } 724 725 void setLayoutParams(WindowManager.LayoutParams attrs, boolean newView) { 726 synchronized (this) { 727 int oldSoftInputMode = mWindowAttributes.softInputMode; 728 // preserve compatible window flag if exists. 729 int compatibleWindowFlag = 730 mWindowAttributes.flags & WindowManager.LayoutParams.FLAG_COMPATIBLE_WINDOW; 731 mWindowAttributesChangesFlag = mWindowAttributes.copyFrom(attrs); 732 mWindowAttributes.flags |= compatibleWindowFlag; 733 734 if (newView) { 735 mSoftInputMode = attrs.softInputMode; 736 requestLayout(); 737 } 738 // Don't lose the mode we last auto-computed. 739 if ((attrs.softInputMode&WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 740 == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 741 mWindowAttributes.softInputMode = (mWindowAttributes.softInputMode 742 & ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 743 | (oldSoftInputMode 744 & WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST); 745 } 746 mWindowAttributesChanged = true; 747 scheduleTraversals(); 748 } 749 } 750 751 void handleAppVisibility(boolean visible) { 752 if (mAppVisible != visible) { 753 mAppVisible = visible; 754 scheduleTraversals(); 755 } 756 } 757 758 void handleGetNewSurface() { 759 mNewSurfaceNeeded = true; 760 mFullRedrawNeeded = true; 761 scheduleTraversals(); 762 } 763 764 void handleScreenStateChange(boolean on) { 765 if (on != mAttachInfo.mScreenOn) { 766 mAttachInfo.mScreenOn = on; 767 if (mView != null) { 768 mView.dispatchScreenStateChanged(on ? View.SCREEN_STATE_ON : View.SCREEN_STATE_OFF); 769 } 770 if (on) { 771 mFullRedrawNeeded = true; 772 scheduleTraversals(); 773 } 774 } 775 } 776 777 /** 778 * {@inheritDoc} 779 */ 780 public void requestLayout() { 781 checkThread(); 782 mLayoutRequested = true; 783 scheduleTraversals(); 784 } 785 786 /** 787 * {@inheritDoc} 788 */ 789 public boolean isLayoutRequested() { 790 return mLayoutRequested; 791 } 792 793 void invalidate() { 794 mDirty.set(0, 0, mWidth, mHeight); 795 scheduleTraversals(); 796 } 797 798 public void invalidateChild(View child, Rect dirty) { 799 invalidateChildInParent(null, dirty); 800 } 801 802 public ViewParent invalidateChildInParent(int[] location, Rect dirty) { 803 checkThread(); 804 if (DEBUG_DRAW) Log.v(TAG, "Invalidate child: " + dirty); 805 806 if (dirty == null) { 807 invalidate(); 808 return null; 809 } 810 811 if (mCurScrollY != 0 || mTranslator != null) { 812 mTempRect.set(dirty); 813 dirty = mTempRect; 814 if (mCurScrollY != 0) { 815 dirty.offset(0, -mCurScrollY); 816 } 817 if (mTranslator != null) { 818 mTranslator.translateRectInAppWindowToScreen(dirty); 819 } 820 if (mAttachInfo.mScalingRequired) { 821 dirty.inset(-1, -1); 822 } 823 } 824 825 final Rect localDirty = mDirty; 826 if (!localDirty.isEmpty() && !localDirty.contains(dirty)) { 827 mAttachInfo.mSetIgnoreDirtyState = true; 828 mAttachInfo.mIgnoreDirtyState = true; 829 } 830 831 // Add the new dirty rect to the current one 832 localDirty.union(dirty.left, dirty.top, dirty.right, dirty.bottom); 833 // Intersect with the bounds of the window to skip 834 // updates that lie outside of the visible region 835 localDirty.intersect(0, 0, mWidth, mHeight); 836 837 if (!mWillDrawSoon) { 838 scheduleTraversals(); 839 } 840 841 return null; 842 } 843 844 void setStopped(boolean stopped) { 845 if (mStopped != stopped) { 846 mStopped = stopped; 847 if (!stopped) { 848 scheduleTraversals(); 849 } 850 } 851 } 852 853 public ViewParent getParent() { 854 return null; 855 } 856 857 public boolean getChildVisibleRect(View child, Rect r, android.graphics.Point offset) { 858 if (child != mView) { 859 throw new RuntimeException("child is not mine, honest!"); 860 } 861 // Note: don't apply scroll offset, because we want to know its 862 // visibility in the virtual canvas being given to the view hierarchy. 863 return r.intersect(0, 0, mWidth, mHeight); 864 } 865 866 public void bringChildToFront(View child) { 867 } 868 869 public void scheduleTraversals() { 870 if (!mTraversalScheduled) { 871 mTraversalScheduled = true; 872 mTraversalBarrier = mHandler.getLooper().postSyncBarrier(); 873 scheduleFrame(); 874 } 875 } 876 877 public void unscheduleTraversals() { 878 if (mTraversalScheduled) { 879 mTraversalScheduled = false; 880 mHandler.getLooper().removeSyncBarrier(mTraversalBarrier); 881 } 882 } 883 884 void scheduleFrame() { 885 if (!mFrameScheduled) { 886 mFrameScheduled = true; 887 mChoreographer.postDrawCallback(mFrameRunnable, null); 888 } 889 } 890 891 void unscheduleFrame() { 892 unscheduleTraversals(); 893 894 if (mFrameScheduled) { 895 mFrameScheduled = false; 896 mChoreographer.removeDrawCallbacks(mFrameRunnable, null); 897 } 898 } 899 900 void doFrame() { 901 if (mInputEventReceiver != null) { 902 mInputEventReceiver.consumeBatchedInputEvents(); 903 } 904 doProcessInputEvents(); 905 906 if (mTraversalScheduled) { 907 mTraversalScheduled = false; 908 mHandler.getLooper().removeSyncBarrier(mTraversalBarrier); 909 doTraversal(); 910 } 911 } 912 913 int getHostVisibility() { 914 return mAppVisible ? mView.getVisibility() : View.GONE; 915 } 916 917 void disposeResizeBuffer() { 918 if (mResizeBuffer != null) { 919 mResizeBuffer.destroy(); 920 mResizeBuffer = null; 921 } 922 } 923 924 /** 925 * Add LayoutTransition to the list of transitions to be started in the next traversal. 926 * This list will be cleared after the transitions on the list are start()'ed. These 927 * transitionsa re added by LayoutTransition itself when it sets up animations. The setup 928 * happens during the layout phase of traversal, which we want to complete before any of the 929 * animations are started (because those animations may side-effect properties that layout 930 * depends upon, like the bounding rectangles of the affected views). So we add the transition 931 * to the list and it is started just prior to starting the drawing phase of traversal. 932 * 933 * @param transition The LayoutTransition to be started on the next traversal. 934 * 935 * @hide 936 */ 937 public void requestTransitionStart(LayoutTransition transition) { 938 if (mPendingTransitions == null || !mPendingTransitions.contains(transition)) { 939 if (mPendingTransitions == null) { 940 mPendingTransitions = new ArrayList<LayoutTransition>(); 941 } 942 mPendingTransitions.add(transition); 943 } 944 } 945 946 private void doTraversal() { 947 if (mProfile) { 948 Debug.startMethodTracing("ViewAncestor"); 949 } 950 951 final long traversalStartTime; 952 if (ViewDebug.DEBUG_LATENCY) { 953 traversalStartTime = System.nanoTime(); 954 if (mLastTraversalFinishedTimeNanos != 0) { 955 Log.d(ViewDebug.DEBUG_LATENCY_TAG, "Starting performTraversals(); it has been " 956 + ((traversalStartTime - mLastTraversalFinishedTimeNanos) * 0.000001f) 957 + "ms since the last traversals finished."); 958 } else { 959 Log.d(ViewDebug.DEBUG_LATENCY_TAG, "Starting performTraversals()."); 960 } 961 } 962 963 performTraversals(); 964 965 if (ViewDebug.DEBUG_LATENCY) { 966 long now = System.nanoTime(); 967 Log.d(ViewDebug.DEBUG_LATENCY_TAG, "performTraversals() took " 968 + ((now - traversalStartTime) * 0.000001f) 969 + "ms."); 970 mLastTraversalFinishedTimeNanos = now; 971 } 972 973 if (mProfile) { 974 Debug.stopMethodTracing(); 975 mProfile = false; 976 } 977 } 978 979 private void performTraversals() { 980 // cache mView since it is used so much below... 981 final View host = mView; 982 983 if (DBG) { 984 System.out.println("======================================"); 985 System.out.println("performTraversals"); 986 host.debug(); 987 } 988 989 if (host == null || !mAdded) 990 return; 991 992 mWillDrawSoon = true; 993 boolean windowSizeMayChange = false; 994 boolean newSurface = false; 995 boolean surfaceChanged = false; 996 WindowManager.LayoutParams lp = mWindowAttributes; 997 998 int desiredWindowWidth; 999 int desiredWindowHeight; 1000 int childWidthMeasureSpec; 1001 int childHeightMeasureSpec; 1002 1003 final View.AttachInfo attachInfo = mAttachInfo; 1004 1005 final int viewVisibility = getHostVisibility(); 1006 boolean viewVisibilityChanged = mViewVisibility != viewVisibility 1007 || mNewSurfaceNeeded; 1008 1009 WindowManager.LayoutParams params = null; 1010 if (mWindowAttributesChanged) { 1011 mWindowAttributesChanged = false; 1012 surfaceChanged = true; 1013 params = lp; 1014 } 1015 CompatibilityInfo compatibilityInfo = mCompatibilityInfo.get(); 1016 if (compatibilityInfo.supportsScreen() == mLastInCompatMode) { 1017 params = lp; 1018 mFullRedrawNeeded = true; 1019 mLayoutRequested = true; 1020 if (mLastInCompatMode) { 1021 params.flags &= ~WindowManager.LayoutParams.FLAG_COMPATIBLE_WINDOW; 1022 mLastInCompatMode = false; 1023 } else { 1024 params.flags |= WindowManager.LayoutParams.FLAG_COMPATIBLE_WINDOW; 1025 mLastInCompatMode = true; 1026 } 1027 } 1028 1029 mWindowAttributesChangesFlag = 0; 1030 1031 Rect frame = mWinFrame; 1032 if (mFirst) { 1033 mFullRedrawNeeded = true; 1034 mLayoutRequested = true; 1035 1036 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL) { 1037 // NOTE -- system code, won't try to do compat mode. 1038 Display disp = WindowManagerImpl.getDefault().getDefaultDisplay(); 1039 Point size = new Point(); 1040 disp.getRealSize(size); 1041 desiredWindowWidth = size.x; 1042 desiredWindowHeight = size.y; 1043 } else { 1044 DisplayMetrics packageMetrics = 1045 mView.getContext().getResources().getDisplayMetrics(); 1046 desiredWindowWidth = packageMetrics.widthPixels; 1047 desiredWindowHeight = packageMetrics.heightPixels; 1048 } 1049 1050 // For the very first time, tell the view hierarchy that it 1051 // is attached to the window. Note that at this point the surface 1052 // object is not initialized to its backing store, but soon it 1053 // will be (assuming the window is visible). 1054 attachInfo.mSurface = mSurface; 1055 // We used to use the following condition to choose 32 bits drawing caches: 1056 // PixelFormat.hasAlpha(lp.format) || lp.format == PixelFormat.RGBX_8888 1057 // However, windows are now always 32 bits by default, so choose 32 bits 1058 attachInfo.mUse32BitDrawingCache = true; 1059 attachInfo.mHasWindowFocus = false; 1060 attachInfo.mWindowVisibility = viewVisibility; 1061 attachInfo.mRecomputeGlobalAttributes = false; 1062 attachInfo.mKeepScreenOn = false; 1063 attachInfo.mSystemUiVisibility = 0; 1064 viewVisibilityChanged = false; 1065 mLastConfiguration.setTo(host.getResources().getConfiguration()); 1066 host.dispatchAttachedToWindow(attachInfo, 0); 1067 //Log.i(TAG, "Screen on initialized: " + attachInfo.mKeepScreenOn); 1068 1069 host.fitSystemWindows(mAttachInfo.mContentInsets); 1070 1071 } else { 1072 desiredWindowWidth = frame.width(); 1073 desiredWindowHeight = frame.height(); 1074 if (desiredWindowWidth != mWidth || desiredWindowHeight != mHeight) { 1075 if (DEBUG_ORIENTATION) Log.v(TAG, 1076 "View " + host + " resized to: " + frame); 1077 mFullRedrawNeeded = true; 1078 mLayoutRequested = true; 1079 windowSizeMayChange = true; 1080 } 1081 } 1082 1083 if (viewVisibilityChanged) { 1084 attachInfo.mWindowVisibility = viewVisibility; 1085 host.dispatchWindowVisibilityChanged(viewVisibility); 1086 if (viewVisibility != View.VISIBLE || mNewSurfaceNeeded) { 1087 destroyHardwareResources(); 1088 } 1089 if (viewVisibility == View.GONE) { 1090 // After making a window gone, we will count it as being 1091 // shown for the first time the next time it gets focus. 1092 mHasHadWindowFocus = false; 1093 } 1094 } 1095 1096 boolean insetsChanged = false; 1097 1098 if (mLayoutRequested && !mStopped) { 1099 // Execute enqueued actions on every layout in case a view that was detached 1100 // enqueued an action after being detached 1101 getRunQueue().executeActions(attachInfo.mHandler); 1102 1103 final Resources res = mView.getContext().getResources(); 1104 1105 if (mFirst) { 1106 // make sure touch mode code executes by setting cached value 1107 // to opposite of the added touch mode. 1108 mAttachInfo.mInTouchMode = !mAddedTouchMode; 1109 ensureTouchModeLocally(mAddedTouchMode); 1110 } else { 1111 if (!mPendingContentInsets.equals(mAttachInfo.mContentInsets)) { 1112 insetsChanged = true; 1113 } 1114 if (!mPendingVisibleInsets.equals(mAttachInfo.mVisibleInsets)) { 1115 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1116 if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: " 1117 + mAttachInfo.mVisibleInsets); 1118 } 1119 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT 1120 || lp.height == ViewGroup.LayoutParams.WRAP_CONTENT) { 1121 windowSizeMayChange = true; 1122 1123 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL) { 1124 // NOTE -- system code, won't try to do compat mode. 1125 Display disp = WindowManagerImpl.getDefault().getDefaultDisplay(); 1126 Point size = new Point(); 1127 disp.getRealSize(size); 1128 desiredWindowWidth = size.x; 1129 desiredWindowHeight = size.y; 1130 } else { 1131 DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1132 desiredWindowWidth = packageMetrics.widthPixels; 1133 desiredWindowHeight = packageMetrics.heightPixels; 1134 } 1135 } 1136 } 1137 1138 // Ask host how big it wants to be 1139 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) Log.v(TAG, 1140 "Measuring " + host + " in display " + desiredWindowWidth 1141 + "x" + desiredWindowHeight + "..."); 1142 1143 boolean goodMeasure = false; 1144 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT) { 1145 // On large screens, we don't want to allow dialogs to just 1146 // stretch to fill the entire width of the screen to display 1147 // one line of text. First try doing the layout at a smaller 1148 // size to see if it will fit. 1149 final DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1150 res.getValue(com.android.internal.R.dimen.config_prefDialogWidth, mTmpValue, true); 1151 int baseSize = 0; 1152 if (mTmpValue.type == TypedValue.TYPE_DIMENSION) { 1153 baseSize = (int)mTmpValue.getDimension(packageMetrics); 1154 } 1155 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": baseSize=" + baseSize); 1156 if (baseSize != 0 && desiredWindowWidth > baseSize) { 1157 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1158 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1159 host.measure(childWidthMeasureSpec, childHeightMeasureSpec); 1160 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": measured (" 1161 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1162 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1163 goodMeasure = true; 1164 } else { 1165 // Didn't fit in that size... try expanding a bit. 1166 baseSize = (baseSize+desiredWindowWidth)/2; 1167 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": next baseSize=" 1168 + baseSize); 1169 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1170 host.measure(childWidthMeasureSpec, childHeightMeasureSpec); 1171 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": measured (" 1172 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1173 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1174 if (DEBUG_DIALOG) Log.v(TAG, "Good!"); 1175 goodMeasure = true; 1176 } 1177 } 1178 } 1179 } 1180 1181 if (!goodMeasure) { 1182 childWidthMeasureSpec = getRootMeasureSpec(desiredWindowWidth, lp.width); 1183 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1184 host.measure(childWidthMeasureSpec, childHeightMeasureSpec); 1185 if (mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) { 1186 windowSizeMayChange = true; 1187 } 1188 } 1189 1190 if (DBG) { 1191 System.out.println("======================================"); 1192 System.out.println("performTraversals -- after measure"); 1193 host.debug(); 1194 } 1195 } 1196 1197 if (attachInfo.mRecomputeGlobalAttributes && host.mAttachInfo != null) { 1198 //Log.i(TAG, "Computing view hierarchy attributes!"); 1199 attachInfo.mRecomputeGlobalAttributes = false; 1200 boolean oldScreenOn = attachInfo.mKeepScreenOn; 1201 int oldVis = attachInfo.mSystemUiVisibility; 1202 boolean oldHasSystemUiListeners = attachInfo.mHasSystemUiListeners; 1203 attachInfo.mKeepScreenOn = false; 1204 attachInfo.mSystemUiVisibility = 0; 1205 attachInfo.mHasSystemUiListeners = false; 1206 host.dispatchCollectViewAttributes(0); 1207 if (attachInfo.mKeepScreenOn != oldScreenOn 1208 || attachInfo.mSystemUiVisibility != oldVis 1209 || attachInfo.mHasSystemUiListeners != oldHasSystemUiListeners) { 1210 params = lp; 1211 } 1212 } 1213 if (attachInfo.mForceReportNewAttributes) { 1214 attachInfo.mForceReportNewAttributes = false; 1215 params = lp; 1216 } 1217 1218 if (mFirst || attachInfo.mViewVisibilityChanged) { 1219 attachInfo.mViewVisibilityChanged = false; 1220 int resizeMode = mSoftInputMode & 1221 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST; 1222 // If we are in auto resize mode, then we need to determine 1223 // what mode to use now. 1224 if (resizeMode == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 1225 final int N = attachInfo.mScrollContainers.size(); 1226 for (int i=0; i<N; i++) { 1227 if (attachInfo.mScrollContainers.get(i).isShown()) { 1228 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE; 1229 } 1230 } 1231 if (resizeMode == 0) { 1232 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_PAN; 1233 } 1234 if ((lp.softInputMode & 1235 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) != resizeMode) { 1236 lp.softInputMode = (lp.softInputMode & 1237 ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) | 1238 resizeMode; 1239 params = lp; 1240 } 1241 } 1242 } 1243 1244 if (params != null && (host.mPrivateFlags & View.REQUEST_TRANSPARENT_REGIONS) != 0) { 1245 if (!PixelFormat.formatHasAlpha(params.format)) { 1246 params.format = PixelFormat.TRANSLUCENT; 1247 } 1248 } 1249 1250 boolean windowShouldResize = mLayoutRequested && windowSizeMayChange 1251 && ((mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) 1252 || (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT && 1253 frame.width() < desiredWindowWidth && frame.width() != mWidth) 1254 || (lp.height == ViewGroup.LayoutParams.WRAP_CONTENT && 1255 frame.height() < desiredWindowHeight && frame.height() != mHeight)); 1256 1257 final boolean computesInternalInsets = 1258 attachInfo.mTreeObserver.hasComputeInternalInsetsListeners(); 1259 1260 boolean insetsPending = false; 1261 int relayoutResult = 0; 1262 1263 if (mFirst || windowShouldResize || insetsChanged || 1264 viewVisibilityChanged || params != null) { 1265 1266 if (viewVisibility == View.VISIBLE) { 1267 // If this window is giving internal insets to the window 1268 // manager, and it is being added or changing its visibility, 1269 // then we want to first give the window manager "fake" 1270 // insets to cause it to effectively ignore the content of 1271 // the window during layout. This avoids it briefly causing 1272 // other windows to resize/move based on the raw frame of the 1273 // window, waiting until we can finish laying out this window 1274 // and get back to the window manager with the ultimately 1275 // computed insets. 1276 insetsPending = computesInternalInsets && (mFirst || viewVisibilityChanged); 1277 } 1278 1279 if (mSurfaceHolder != null) { 1280 mSurfaceHolder.mSurfaceLock.lock(); 1281 mDrawingAllowed = true; 1282 } 1283 1284 boolean hwInitialized = false; 1285 boolean contentInsetsChanged = false; 1286 boolean visibleInsetsChanged; 1287 boolean hadSurface = mSurface.isValid(); 1288 1289 try { 1290 int fl = 0; 1291 if (params != null) { 1292 fl = params.flags; 1293 if (attachInfo.mKeepScreenOn) { 1294 params.flags |= WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON; 1295 } 1296 params.subtreeSystemUiVisibility = attachInfo.mSystemUiVisibility; 1297 params.hasSystemUiListeners = attachInfo.mHasSystemUiListeners; 1298 } 1299 if (DEBUG_LAYOUT) { 1300 Log.i(TAG, "host=w:" + host.getMeasuredWidth() + ", h:" + 1301 host.getMeasuredHeight() + ", params=" + params); 1302 } 1303 1304 final int surfaceGenerationId = mSurface.getGenerationId(); 1305 relayoutResult = relayoutWindow(params, viewVisibility, insetsPending); 1306 1307 if (params != null) { 1308 params.flags = fl; 1309 } 1310 1311 if (DEBUG_LAYOUT) Log.v(TAG, "relayout: frame=" + frame.toShortString() 1312 + " content=" + mPendingContentInsets.toShortString() 1313 + " visible=" + mPendingVisibleInsets.toShortString() 1314 + " surface=" + mSurface); 1315 1316 if (mPendingConfiguration.seq != 0) { 1317 if (DEBUG_CONFIGURATION) Log.v(TAG, "Visible with new config: " 1318 + mPendingConfiguration); 1319 updateConfiguration(mPendingConfiguration, !mFirst); 1320 mPendingConfiguration.seq = 0; 1321 } 1322 1323 contentInsetsChanged = !mPendingContentInsets.equals( 1324 mAttachInfo.mContentInsets); 1325 visibleInsetsChanged = !mPendingVisibleInsets.equals( 1326 mAttachInfo.mVisibleInsets); 1327 if (contentInsetsChanged) { 1328 if (mWidth > 0 && mHeight > 0 && 1329 mSurface != null && mSurface.isValid() && 1330 !mAttachInfo.mTurnOffWindowResizeAnim && 1331 mAttachInfo.mHardwareRenderer != null && 1332 mAttachInfo.mHardwareRenderer.isEnabled() && 1333 mAttachInfo.mHardwareRenderer.validate() && 1334 lp != null && !PixelFormat.formatHasAlpha(lp.format)) { 1335 1336 disposeResizeBuffer(); 1337 1338 boolean completed = false; 1339 HardwareCanvas hwRendererCanvas = mAttachInfo.mHardwareRenderer.getCanvas(); 1340 HardwareCanvas layerCanvas = null; 1341 try { 1342 if (mResizeBuffer == null) { 1343 mResizeBuffer = mAttachInfo.mHardwareRenderer.createHardwareLayer( 1344 mWidth, mHeight, false); 1345 } else if (mResizeBuffer.getWidth() != mWidth || 1346 mResizeBuffer.getHeight() != mHeight) { 1347 mResizeBuffer.resize(mWidth, mHeight); 1348 } 1349 layerCanvas = mResizeBuffer.start(hwRendererCanvas); 1350 layerCanvas.setViewport(mWidth, mHeight); 1351 layerCanvas.onPreDraw(null); 1352 final int restoreCount = layerCanvas.save(); 1353 1354 layerCanvas.drawColor(0xff000000, PorterDuff.Mode.SRC); 1355 1356 int yoff; 1357 final boolean scrolling = mScroller != null 1358 && mScroller.computeScrollOffset(); 1359 if (scrolling) { 1360 yoff = mScroller.getCurrY(); 1361 mScroller.abortAnimation(); 1362 } else { 1363 yoff = mScrollY; 1364 } 1365 1366 layerCanvas.translate(0, -yoff); 1367 if (mTranslator != null) { 1368 mTranslator.translateCanvas(layerCanvas); 1369 } 1370 1371 mView.draw(layerCanvas); 1372 1373 mResizeBufferStartTime = SystemClock.uptimeMillis(); 1374 mResizeBufferDuration = mView.getResources().getInteger( 1375 com.android.internal.R.integer.config_mediumAnimTime); 1376 completed = true; 1377 1378 layerCanvas.restoreToCount(restoreCount); 1379 } catch (OutOfMemoryError e) { 1380 Log.w(TAG, "Not enough memory for content change anim buffer", e); 1381 } finally { 1382 if (layerCanvas != null) { 1383 layerCanvas.onPostDraw(); 1384 } 1385 if (mResizeBuffer != null) { 1386 mResizeBuffer.end(hwRendererCanvas); 1387 if (!completed) { 1388 mResizeBuffer.destroy(); 1389 mResizeBuffer = null; 1390 } 1391 } 1392 } 1393 } 1394 mAttachInfo.mContentInsets.set(mPendingContentInsets); 1395 host.fitSystemWindows(mAttachInfo.mContentInsets); 1396 if (DEBUG_LAYOUT) Log.v(TAG, "Content insets changing to: " 1397 + mAttachInfo.mContentInsets); 1398 } 1399 if (visibleInsetsChanged) { 1400 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1401 if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: " 1402 + mAttachInfo.mVisibleInsets); 1403 } 1404 1405 if (!hadSurface) { 1406 if (mSurface.isValid()) { 1407 // If we are creating a new surface, then we need to 1408 // completely redraw it. Also, when we get to the 1409 // point of drawing it we will hold off and schedule 1410 // a new traversal instead. This is so we can tell the 1411 // window manager about all of the windows being displayed 1412 // before actually drawing them, so it can display then 1413 // all at once. 1414 newSurface = true; 1415 mFullRedrawNeeded = true; 1416 mPreviousTransparentRegion.setEmpty(); 1417 1418 if (mAttachInfo.mHardwareRenderer != null) { 1419 try { 1420 hwInitialized = mAttachInfo.mHardwareRenderer.initialize(mHolder); 1421 } catch (Surface.OutOfResourcesException e) { 1422 Log.e(TAG, "OutOfResourcesException initializing HW surface", e); 1423 try { 1424 if (!sWindowSession.outOfMemory(mWindow)) { 1425 Slog.w(TAG, "No processes killed for memory; killing self"); 1426 Process.killProcess(Process.myPid()); 1427 } 1428 } catch (RemoteException ex) { 1429 } 1430 mLayoutRequested = true; // ask wm for a new surface next time. 1431 return; 1432 } 1433 } 1434 } 1435 } else if (!mSurface.isValid()) { 1436 // If the surface has been removed, then reset the scroll 1437 // positions. 1438 mLastScrolledFocus = null; 1439 mScrollY = mCurScrollY = 0; 1440 if (mScroller != null) { 1441 mScroller.abortAnimation(); 1442 } 1443 disposeResizeBuffer(); 1444 // Our surface is gone 1445 if (mAttachInfo.mHardwareRenderer != null && 1446 mAttachInfo.mHardwareRenderer.isEnabled()) { 1447 mAttachInfo.mHardwareRenderer.destroy(true); 1448 } 1449 } else if (surfaceGenerationId != mSurface.getGenerationId() && 1450 mSurfaceHolder == null && mAttachInfo.mHardwareRenderer != null) { 1451 mFullRedrawNeeded = true; 1452 try { 1453 mAttachInfo.mHardwareRenderer.updateSurface(mHolder); 1454 } catch (Surface.OutOfResourcesException e) { 1455 Log.e(TAG, "OutOfResourcesException updating HW surface", e); 1456 try { 1457 if (!sWindowSession.outOfMemory(mWindow)) { 1458 Slog.w(TAG, "No processes killed for memory; killing self"); 1459 Process.killProcess(Process.myPid()); 1460 } 1461 } catch (RemoteException ex) { 1462 } 1463 mLayoutRequested = true; // ask wm for a new surface next time. 1464 return; 1465 } 1466 } 1467 } catch (RemoteException e) { 1468 } 1469 1470 if (DEBUG_ORIENTATION) Log.v( 1471 TAG, "Relayout returned: frame=" + frame + ", surface=" + mSurface); 1472 1473 attachInfo.mWindowLeft = frame.left; 1474 attachInfo.mWindowTop = frame.top; 1475 1476 // !!FIXME!! This next section handles the case where we did not get the 1477 // window size we asked for. We should avoid this by getting a maximum size from 1478 // the window session beforehand. 1479 mWidth = frame.width(); 1480 mHeight = frame.height(); 1481 1482 if (mSurfaceHolder != null) { 1483 // The app owns the surface; tell it about what is going on. 1484 if (mSurface.isValid()) { 1485 // XXX .copyFrom() doesn't work! 1486 //mSurfaceHolder.mSurface.copyFrom(mSurface); 1487 mSurfaceHolder.mSurface = mSurface; 1488 } 1489 mSurfaceHolder.setSurfaceFrameSize(mWidth, mHeight); 1490 mSurfaceHolder.mSurfaceLock.unlock(); 1491 if (mSurface.isValid()) { 1492 if (!hadSurface) { 1493 mSurfaceHolder.ungetCallbacks(); 1494 1495 mIsCreating = true; 1496 mSurfaceHolderCallback.surfaceCreated(mSurfaceHolder); 1497 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1498 if (callbacks != null) { 1499 for (SurfaceHolder.Callback c : callbacks) { 1500 c.surfaceCreated(mSurfaceHolder); 1501 } 1502 } 1503 surfaceChanged = true; 1504 } 1505 if (surfaceChanged) { 1506 mSurfaceHolderCallback.surfaceChanged(mSurfaceHolder, 1507 lp.format, mWidth, mHeight); 1508 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1509 if (callbacks != null) { 1510 for (SurfaceHolder.Callback c : callbacks) { 1511 c.surfaceChanged(mSurfaceHolder, lp.format, 1512 mWidth, mHeight); 1513 } 1514 } 1515 } 1516 mIsCreating = false; 1517 } else if (hadSurface) { 1518 mSurfaceHolder.ungetCallbacks(); 1519 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1520 mSurfaceHolderCallback.surfaceDestroyed(mSurfaceHolder); 1521 if (callbacks != null) { 1522 for (SurfaceHolder.Callback c : callbacks) { 1523 c.surfaceDestroyed(mSurfaceHolder); 1524 } 1525 } 1526 mSurfaceHolder.mSurfaceLock.lock(); 1527 try { 1528 mSurfaceHolder.mSurface = new Surface(); 1529 } finally { 1530 mSurfaceHolder.mSurfaceLock.unlock(); 1531 } 1532 } 1533 } 1534 1535 if (mAttachInfo.mHardwareRenderer != null && 1536 mAttachInfo.mHardwareRenderer.isEnabled()) { 1537 if (hwInitialized || windowShouldResize || 1538 mWidth != mAttachInfo.mHardwareRenderer.getWidth() || 1539 mHeight != mAttachInfo.mHardwareRenderer.getHeight()) { 1540 mAttachInfo.mHardwareRenderer.setup(mWidth, mHeight); 1541 if (!hwInitialized) { 1542 mAttachInfo.mHardwareRenderer.invalidate(mHolder); 1543 } 1544 } 1545 } 1546 1547 if (!mStopped) { 1548 boolean focusChangedDueToTouchMode = ensureTouchModeLocally( 1549 (relayoutResult&WindowManagerImpl.RELAYOUT_RES_IN_TOUCH_MODE) != 0); 1550 if (focusChangedDueToTouchMode || mWidth != host.getMeasuredWidth() 1551 || mHeight != host.getMeasuredHeight() || contentInsetsChanged) { 1552 childWidthMeasureSpec = getRootMeasureSpec(mWidth, lp.width); 1553 childHeightMeasureSpec = getRootMeasureSpec(mHeight, lp.height); 1554 1555 if (DEBUG_LAYOUT) Log.v(TAG, "Ooops, something changed! mWidth=" 1556 + mWidth + " measuredWidth=" + host.getMeasuredWidth() 1557 + " mHeight=" + mHeight 1558 + " measuredHeight=" + host.getMeasuredHeight() 1559 + " coveredInsetsChanged=" + contentInsetsChanged); 1560 1561 // Ask host how big it wants to be 1562 host.measure(childWidthMeasureSpec, childHeightMeasureSpec); 1563 1564 // Implementation of weights from WindowManager.LayoutParams 1565 // We just grow the dimensions as needed and re-measure if 1566 // needs be 1567 int width = host.getMeasuredWidth(); 1568 int height = host.getMeasuredHeight(); 1569 boolean measureAgain = false; 1570 1571 if (lp.horizontalWeight > 0.0f) { 1572 width += (int) ((mWidth - width) * lp.horizontalWeight); 1573 childWidthMeasureSpec = MeasureSpec.makeMeasureSpec(width, 1574 MeasureSpec.EXACTLY); 1575 measureAgain = true; 1576 } 1577 if (lp.verticalWeight > 0.0f) { 1578 height += (int) ((mHeight - height) * lp.verticalWeight); 1579 childHeightMeasureSpec = MeasureSpec.makeMeasureSpec(height, 1580 MeasureSpec.EXACTLY); 1581 measureAgain = true; 1582 } 1583 1584 if (measureAgain) { 1585 if (DEBUG_LAYOUT) Log.v(TAG, 1586 "And hey let's measure once more: width=" + width 1587 + " height=" + height); 1588 host.measure(childWidthMeasureSpec, childHeightMeasureSpec); 1589 } 1590 1591 mLayoutRequested = true; 1592 } 1593 } 1594 } 1595 1596 final boolean didLayout = mLayoutRequested && !mStopped; 1597 boolean triggerGlobalLayoutListener = didLayout 1598 || attachInfo.mRecomputeGlobalAttributes; 1599 if (didLayout) { 1600 mLayoutRequested = false; 1601 mScrollMayChange = true; 1602 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) Log.v( 1603 TAG, "Laying out " + host + " to (" + 1604 host.getMeasuredWidth() + ", " + host.getMeasuredHeight() + ")"); 1605 long startTime = 0L; 1606 if (ViewDebug.DEBUG_PROFILE_LAYOUT) { 1607 startTime = SystemClock.elapsedRealtime(); 1608 } 1609 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 1610 1611 if (false && ViewDebug.consistencyCheckEnabled) { 1612 if (!host.dispatchConsistencyCheck(ViewDebug.CONSISTENCY_LAYOUT)) { 1613 throw new IllegalStateException("The view hierarchy is an inconsistent state," 1614 + "please refer to the logs with the tag " 1615 + ViewDebug.CONSISTENCY_LOG_TAG + " for more infomation."); 1616 } 1617 } 1618 1619 if (ViewDebug.DEBUG_PROFILE_LAYOUT) { 1620 EventLog.writeEvent(60001, SystemClock.elapsedRealtime() - startTime); 1621 } 1622 1623 // By this point all views have been sized and positionned 1624 // We can compute the transparent area 1625 1626 if ((host.mPrivateFlags & View.REQUEST_TRANSPARENT_REGIONS) != 0) { 1627 // start out transparent 1628 // TODO: AVOID THAT CALL BY CACHING THE RESULT? 1629 host.getLocationInWindow(mTmpLocation); 1630 mTransparentRegion.set(mTmpLocation[0], mTmpLocation[1], 1631 mTmpLocation[0] + host.mRight - host.mLeft, 1632 mTmpLocation[1] + host.mBottom - host.mTop); 1633 1634 host.gatherTransparentRegion(mTransparentRegion); 1635 if (mTranslator != null) { 1636 mTranslator.translateRegionInWindowToScreen(mTransparentRegion); 1637 } 1638 1639 if (!mTransparentRegion.equals(mPreviousTransparentRegion)) { 1640 mPreviousTransparentRegion.set(mTransparentRegion); 1641 // reconfigure window manager 1642 try { 1643 sWindowSession.setTransparentRegion(mWindow, mTransparentRegion); 1644 } catch (RemoteException e) { 1645 } 1646 } 1647 } 1648 1649 if (DBG) { 1650 System.out.println("======================================"); 1651 System.out.println("performTraversals -- after setFrame"); 1652 host.debug(); 1653 } 1654 } 1655 1656 if (triggerGlobalLayoutListener) { 1657 attachInfo.mRecomputeGlobalAttributes = false; 1658 attachInfo.mTreeObserver.dispatchOnGlobalLayout(); 1659 1660 if (AccessibilityManager.getInstance(host.mContext).isEnabled()) { 1661 postSendWindowContentChangedCallback(); 1662 } 1663 } 1664 1665 if (computesInternalInsets) { 1666 // Clear the original insets. 1667 final ViewTreeObserver.InternalInsetsInfo insets = attachInfo.mGivenInternalInsets; 1668 insets.reset(); 1669 1670 // Compute new insets in place. 1671 attachInfo.mTreeObserver.dispatchOnComputeInternalInsets(insets); 1672 1673 // Tell the window manager. 1674 if (insetsPending || !mLastGivenInsets.equals(insets)) { 1675 mLastGivenInsets.set(insets); 1676 1677 // Translate insets to screen coordinates if needed. 1678 final Rect contentInsets; 1679 final Rect visibleInsets; 1680 final Region touchableRegion; 1681 if (mTranslator != null) { 1682 contentInsets = mTranslator.getTranslatedContentInsets(insets.contentInsets); 1683 visibleInsets = mTranslator.getTranslatedVisibleInsets(insets.visibleInsets); 1684 touchableRegion = mTranslator.getTranslatedTouchableArea(insets.touchableRegion); 1685 } else { 1686 contentInsets = insets.contentInsets; 1687 visibleInsets = insets.visibleInsets; 1688 touchableRegion = insets.touchableRegion; 1689 } 1690 1691 try { 1692 sWindowSession.setInsets(mWindow, insets.mTouchableInsets, 1693 contentInsets, visibleInsets, touchableRegion); 1694 } catch (RemoteException e) { 1695 } 1696 } 1697 } 1698 1699 if (mFirst) { 1700 // handle first focus request 1701 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: mView.hasFocus()=" 1702 + mView.hasFocus()); 1703 if (mView != null) { 1704 if (!mView.hasFocus()) { 1705 mView.requestFocus(View.FOCUS_FORWARD); 1706 mFocusedView = mRealFocusedView = mView.findFocus(); 1707 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: requested focused view=" 1708 + mFocusedView); 1709 } else { 1710 mRealFocusedView = mView.findFocus(); 1711 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: existing focused view=" 1712 + mRealFocusedView); 1713 } 1714 } 1715 } 1716 1717 mFirst = false; 1718 mWillDrawSoon = false; 1719 mNewSurfaceNeeded = false; 1720 mViewVisibility = viewVisibility; 1721 1722 if (mAttachInfo.mHasWindowFocus) { 1723 final boolean imTarget = WindowManager.LayoutParams 1724 .mayUseInputMethod(mWindowAttributes.flags); 1725 if (imTarget != mLastWasImTarget) { 1726 mLastWasImTarget = imTarget; 1727 InputMethodManager imm = InputMethodManager.peekInstance(); 1728 if (imm != null && imTarget) { 1729 imm.startGettingWindowFocus(mView); 1730 imm.onWindowFocus(mView, mView.findFocus(), 1731 mWindowAttributes.softInputMode, 1732 !mHasHadWindowFocus, mWindowAttributes.flags); 1733 } 1734 } 1735 } 1736 1737 // Remember if we must report the next draw. 1738 if ((relayoutResult & WindowManagerImpl.RELAYOUT_RES_FIRST_TIME) != 0) { 1739 mReportNextDraw = true; 1740 } 1741 1742 boolean cancelDraw = attachInfo.mTreeObserver.dispatchOnPreDraw() || 1743 viewVisibility != View.VISIBLE; 1744 1745 if (!cancelDraw && !newSurface) { 1746 if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 1747 for (int i = 0; i < mPendingTransitions.size(); ++i) { 1748 mPendingTransitions.get(i).startChangingAnimations(); 1749 } 1750 mPendingTransitions.clear(); 1751 } 1752 1753 performDraw(); 1754 } else { 1755 // End any pending transitions on this non-visible window 1756 if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 1757 for (int i = 0; i < mPendingTransitions.size(); ++i) { 1758 mPendingTransitions.get(i).endChangingAnimations(); 1759 } 1760 mPendingTransitions.clear(); 1761 } 1762 1763 if (viewVisibility == View.VISIBLE) { 1764 // Try again 1765 scheduleTraversals(); 1766 } 1767 } 1768 } 1769 1770 public void requestTransparentRegion(View child) { 1771 // the test below should not fail unless someone is messing with us 1772 checkThread(); 1773 if (mView == child) { 1774 mView.mPrivateFlags |= View.REQUEST_TRANSPARENT_REGIONS; 1775 // Need to make sure we re-evaluate the window attributes next 1776 // time around, to ensure the window has the correct format. 1777 mWindowAttributesChanged = true; 1778 mWindowAttributesChangesFlag = 0; 1779 requestLayout(); 1780 } 1781 } 1782 1783 /** 1784 * Figures out the measure spec for the root view in a window based on it's 1785 * layout params. 1786 * 1787 * @param windowSize 1788 * The available width or height of the window 1789 * 1790 * @param rootDimension 1791 * The layout params for one dimension (width or height) of the 1792 * window. 1793 * 1794 * @return The measure spec to use to measure the root view. 1795 */ 1796 private int getRootMeasureSpec(int windowSize, int rootDimension) { 1797 int measureSpec; 1798 switch (rootDimension) { 1799 1800 case ViewGroup.LayoutParams.MATCH_PARENT: 1801 // Window can't resize. Force root view to be windowSize. 1802 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.EXACTLY); 1803 break; 1804 case ViewGroup.LayoutParams.WRAP_CONTENT: 1805 // Window can resize. Set max size for root view. 1806 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.AT_MOST); 1807 break; 1808 default: 1809 // Window wants to be an exact size. Force root view to be that size. 1810 measureSpec = MeasureSpec.makeMeasureSpec(rootDimension, MeasureSpec.EXACTLY); 1811 break; 1812 } 1813 return measureSpec; 1814 } 1815 1816 int mHardwareYOffset; 1817 int mResizeAlpha; 1818 final Paint mResizePaint = new Paint(); 1819 1820 public void onHardwarePreDraw(HardwareCanvas canvas) { 1821 canvas.translate(0, -mHardwareYOffset); 1822 } 1823 1824 public void onHardwarePostDraw(HardwareCanvas canvas) { 1825 if (mResizeBuffer != null) { 1826 mResizePaint.setAlpha(mResizeAlpha); 1827 canvas.drawHardwareLayer(mResizeBuffer, 0.0f, mHardwareYOffset, mResizePaint); 1828 } 1829 } 1830 1831 /** 1832 * @hide 1833 */ 1834 void outputDisplayList(View view) { 1835 if (mAttachInfo != null && mAttachInfo.mHardwareCanvas != null) { 1836 DisplayList displayList = view.getDisplayList(); 1837 if (displayList != null) { 1838 mAttachInfo.mHardwareCanvas.outputDisplayList(displayList); 1839 } 1840 } 1841 } 1842 1843 /** 1844 * @see #PROPERTY_PROFILE_RENDERING 1845 */ 1846 private void profileRendering(boolean enabled) { 1847 if (mProfileRendering) { 1848 mRenderProfilingEnabled = enabled; 1849 if (mRenderProfiler == null) { 1850 mRenderProfiler = new Thread(new Runnable() { 1851 @Override 1852 public void run() { 1853 Log.d(TAG, "Starting profiling thread"); 1854 while (mRenderProfilingEnabled) { 1855 mAttachInfo.mHandler.post(new Runnable() { 1856 @Override 1857 public void run() { 1858 mDirty.set(0, 0, mWidth, mHeight); 1859 scheduleTraversals(); 1860 } 1861 }); 1862 try { 1863 // TODO: This should use vsync when we get an API 1864 Thread.sleep(15); 1865 } catch (InterruptedException e) { 1866 Log.d(TAG, "Exiting profiling thread"); 1867 } 1868 } 1869 } 1870 }, "Rendering Profiler"); 1871 mRenderProfiler.start(); 1872 } else { 1873 mRenderProfiler.interrupt(); 1874 mRenderProfiler = null; 1875 } 1876 } 1877 } 1878 1879 /** 1880 * Called from draw() when DEBUG_FPS is enabled 1881 */ 1882 private void trackFPS() { 1883 // Tracks frames per second drawn. First value in a series of draws may be bogus 1884 // because it down not account for the intervening idle time 1885 long nowTime = System.currentTimeMillis(); 1886 if (mFpsStartTime < 0) { 1887 mFpsStartTime = mFpsPrevTime = nowTime; 1888 mFpsNumFrames = 0; 1889 } else { 1890 ++mFpsNumFrames; 1891 String thisHash = Integer.toHexString(System.identityHashCode(this)); 1892 long frameTime = nowTime - mFpsPrevTime; 1893 long totalTime = nowTime - mFpsStartTime; 1894 Log.v(TAG, "0x" + thisHash + "\tFrame time:\t" + frameTime); 1895 mFpsPrevTime = nowTime; 1896 if (totalTime > 1000) { 1897 float fps = (float) mFpsNumFrames * 1000 / totalTime; 1898 Log.v(TAG, "0x" + thisHash + "\tFPS:\t" + fps); 1899 mFpsStartTime = nowTime; 1900 mFpsNumFrames = 0; 1901 } 1902 } 1903 } 1904 1905 private void performDraw() { 1906 if (!mAttachInfo.mScreenOn) return; 1907 1908 final long drawStartTime; 1909 if (ViewDebug.DEBUG_LATENCY) { 1910 drawStartTime = System.nanoTime(); 1911 if (mLastDrawFinishedTimeNanos != 0) { 1912 Log.d(ViewDebug.DEBUG_LATENCY_TAG, "Starting draw(); it has been " 1913 + ((drawStartTime - mLastDrawFinishedTimeNanos) * 0.000001f) 1914 + "ms since the last draw finished."); 1915 } else { 1916 Log.d(ViewDebug.DEBUG_LATENCY_TAG, "Starting draw()."); 1917 } 1918 } 1919 1920 final boolean fullRedrawNeeded = mFullRedrawNeeded; 1921 mFullRedrawNeeded = false; 1922 draw(fullRedrawNeeded); 1923 1924 if (ViewDebug.DEBUG_LATENCY) { 1925 long now = System.nanoTime(); 1926 Log.d(ViewDebug.DEBUG_LATENCY_TAG, "performDraw() took " 1927 + ((now - drawStartTime) * 0.000001f) 1928 + "ms."); 1929 mLastDrawFinishedTimeNanos = now; 1930 } 1931 1932 if (mReportNextDraw) { 1933 mReportNextDraw = false; 1934 1935 if (LOCAL_LOGV) { 1936 Log.v(TAG, "FINISHED DRAWING: " + mWindowAttributes.getTitle()); 1937 } 1938 if (mSurfaceHolder != null && mSurface.isValid()) { 1939 mSurfaceHolderCallback.surfaceRedrawNeeded(mSurfaceHolder); 1940 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1941 if (callbacks != null) { 1942 for (SurfaceHolder.Callback c : callbacks) { 1943 if (c instanceof SurfaceHolder.Callback2) { 1944 ((SurfaceHolder.Callback2)c).surfaceRedrawNeeded( 1945 mSurfaceHolder); 1946 } 1947 } 1948 } 1949 } 1950 try { 1951 sWindowSession.finishDrawing(mWindow); 1952 } catch (RemoteException e) { 1953 } 1954 } 1955 } 1956 1957 private void draw(boolean fullRedrawNeeded) { 1958 Surface surface = mSurface; 1959 if (surface == null || !surface.isValid()) { 1960 return; 1961 } 1962 1963 if (DEBUG_FPS) { 1964 trackFPS(); 1965 } 1966 1967 if (!sFirstDrawComplete) { 1968 synchronized (sFirstDrawHandlers) { 1969 sFirstDrawComplete = true; 1970 final int count = sFirstDrawHandlers.size(); 1971 for (int i = 0; i< count; i++) { 1972 mHandler.post(sFirstDrawHandlers.get(i)); 1973 } 1974 } 1975 } 1976 1977 scrollToRectOrFocus(null, false); 1978 1979 if (mAttachInfo.mViewScrollChanged) { 1980 mAttachInfo.mViewScrollChanged = false; 1981 mAttachInfo.mTreeObserver.dispatchOnScrollChanged(); 1982 } 1983 1984 int yoff; 1985 boolean animating = mScroller != null && mScroller.computeScrollOffset(); 1986 if (animating) { 1987 yoff = mScroller.getCurrY(); 1988 } else { 1989 yoff = mScrollY; 1990 } 1991 if (mCurScrollY != yoff) { 1992 mCurScrollY = yoff; 1993 fullRedrawNeeded = true; 1994 } 1995 1996 final float appScale = mAttachInfo.mApplicationScale; 1997 final boolean scalingRequired = mAttachInfo.mScalingRequired; 1998 1999 int resizeAlpha = 0; 2000 if (mResizeBuffer != null) { 2001 long deltaTime = SystemClock.uptimeMillis() - mResizeBufferStartTime; 2002 if (deltaTime < mResizeBufferDuration) { 2003 float amt = deltaTime/(float) mResizeBufferDuration; 2004 amt = mResizeInterpolator.getInterpolation(amt); 2005 animating = true; 2006 resizeAlpha = 255 - (int)(amt*255); 2007 } else { 2008 disposeResizeBuffer(); 2009 } 2010 } 2011 2012 final Rect dirty = mDirty; 2013 if (mSurfaceHolder != null) { 2014 // The app owns the surface, we won't draw. 2015 dirty.setEmpty(); 2016 if (animating) { 2017 if (mScroller != null) { 2018 mScroller.abortAnimation(); 2019 } 2020 disposeResizeBuffer(); 2021 } 2022 return; 2023 } 2024 2025 if (fullRedrawNeeded) { 2026 mAttachInfo.mIgnoreDirtyState = true; 2027 dirty.set(0, 0, (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 2028 } 2029 2030 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2031 Log.v(TAG, "Draw " + mView + "/" 2032 + mWindowAttributes.getTitle() 2033 + ": dirty={" + dirty.left + "," + dirty.top 2034 + "," + dirty.right + "," + dirty.bottom + "} surface=" 2035 + surface + " surface.isValid()=" + surface.isValid() + ", appScale:" + 2036 appScale + ", width=" + mWidth + ", height=" + mHeight); 2037 } 2038 2039 if (!dirty.isEmpty() || mIsAnimating) { 2040 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled()) { 2041 // Draw with hardware renderer. 2042 mIsAnimating = false; 2043 mHardwareYOffset = yoff; 2044 mResizeAlpha = resizeAlpha; 2045 2046 mCurrentDirty.set(dirty); 2047 mCurrentDirty.union(mPreviousDirty); 2048 mPreviousDirty.set(dirty); 2049 dirty.setEmpty(); 2050 2051 if (mAttachInfo.mHardwareRenderer.draw(mView, mAttachInfo, this, 2052 animating ? null : mCurrentDirty)) { 2053 mPreviousDirty.set(0, 0, mWidth, mHeight); 2054 } 2055 } else { 2056 // Draw with software renderer. 2057 Canvas canvas; 2058 try { 2059 int left = dirty.left; 2060 int top = dirty.top; 2061 int right = dirty.right; 2062 int bottom = dirty.bottom; 2063 2064 final long lockCanvasStartTime; 2065 if (ViewDebug.DEBUG_LATENCY) { 2066 lockCanvasStartTime = System.nanoTime(); 2067 } 2068 2069 canvas = mSurface.lockCanvas(dirty); 2070 2071 if (ViewDebug.DEBUG_LATENCY) { 2072 long now = System.nanoTime(); 2073 Log.d(ViewDebug.DEBUG_LATENCY_TAG, "- lockCanvas() took " 2074 + ((now - lockCanvasStartTime) * 0.000001f) + "ms"); 2075 } 2076 2077 if (left != dirty.left || top != dirty.top || right != dirty.right || 2078 bottom != dirty.bottom) { 2079 mAttachInfo.mIgnoreDirtyState = true; 2080 } 2081 2082 // TODO: Do this in native 2083 canvas.setDensity(mDensity); 2084 } catch (Surface.OutOfResourcesException e) { 2085 Log.e(TAG, "OutOfResourcesException locking surface", e); 2086 try { 2087 if (!sWindowSession.outOfMemory(mWindow)) { 2088 Slog.w(TAG, "No processes killed for memory; killing self"); 2089 Process.killProcess(Process.myPid()); 2090 } 2091 } catch (RemoteException ex) { 2092 } 2093 mLayoutRequested = true; // ask wm for a new surface next time. 2094 return; 2095 } catch (IllegalArgumentException e) { 2096 Log.e(TAG, "IllegalArgumentException locking surface", e); 2097 // Don't assume this is due to out of memory, it could be 2098 // something else, and if it is something else then we could 2099 // kill stuff (or ourself) for no reason. 2100 mLayoutRequested = true; // ask wm for a new surface next time. 2101 return; 2102 } 2103 2104 try { 2105 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2106 Log.v(TAG, "Surface " + surface + " drawing to bitmap w=" 2107 + canvas.getWidth() + ", h=" + canvas.getHeight()); 2108 //canvas.drawARGB(255, 255, 0, 0); 2109 } 2110 2111 long startTime = 0L; 2112 if (ViewDebug.DEBUG_PROFILE_DRAWING) { 2113 startTime = SystemClock.elapsedRealtime(); 2114 } 2115 2116 // If this bitmap's format includes an alpha channel, we 2117 // need to clear it before drawing so that the child will 2118 // properly re-composite its drawing on a transparent 2119 // background. This automatically respects the clip/dirty region 2120 // or 2121 // If we are applying an offset, we need to clear the area 2122 // where the offset doesn't appear to avoid having garbage 2123 // left in the blank areas. 2124 if (!canvas.isOpaque() || yoff != 0) { 2125 canvas.drawColor(0, PorterDuff.Mode.CLEAR); 2126 } 2127 2128 dirty.setEmpty(); 2129 mIsAnimating = false; 2130 mAttachInfo.mDrawingTime = SystemClock.uptimeMillis(); 2131 mView.mPrivateFlags |= View.DRAWN; 2132 2133 if (DEBUG_DRAW) { 2134 Context cxt = mView.getContext(); 2135 Log.i(TAG, "Drawing: package:" + cxt.getPackageName() + 2136 ", metrics=" + cxt.getResources().getDisplayMetrics() + 2137 ", compatibilityInfo=" + cxt.getResources().getCompatibilityInfo()); 2138 } 2139 try { 2140 canvas.translate(0, -yoff); 2141 if (mTranslator != null) { 2142 mTranslator.translateCanvas(canvas); 2143 } 2144 canvas.setScreenDensity(scalingRequired 2145 ? DisplayMetrics.DENSITY_DEVICE : 0); 2146 mAttachInfo.mSetIgnoreDirtyState = false; 2147 2148 final long drawStartTime; 2149 if (ViewDebug.DEBUG_LATENCY) { 2150 drawStartTime = System.nanoTime(); 2151 } 2152 2153 mView.draw(canvas); 2154 2155 if (ViewDebug.DEBUG_LATENCY) { 2156 long now = System.nanoTime(); 2157 Log.d(ViewDebug.DEBUG_LATENCY_TAG, "- draw() took " 2158 + ((now - drawStartTime) * 0.000001f) + "ms"); 2159 } 2160 } finally { 2161 if (!mAttachInfo.mSetIgnoreDirtyState) { 2162 // Only clear the flag if it was not set during the mView.draw() call 2163 mAttachInfo.mIgnoreDirtyState = false; 2164 } 2165 } 2166 2167 if (false && ViewDebug.consistencyCheckEnabled) { 2168 mView.dispatchConsistencyCheck(ViewDebug.CONSISTENCY_DRAWING); 2169 } 2170 2171 if (ViewDebug.DEBUG_PROFILE_DRAWING) { 2172 EventLog.writeEvent(60000, SystemClock.elapsedRealtime() - startTime); 2173 } 2174 } finally { 2175 final long unlockCanvasAndPostStartTime; 2176 if (ViewDebug.DEBUG_LATENCY) { 2177 unlockCanvasAndPostStartTime = System.nanoTime(); 2178 } 2179 2180 surface.unlockCanvasAndPost(canvas); 2181 2182 if (ViewDebug.DEBUG_LATENCY) { 2183 long now = System.nanoTime(); 2184 Log.d(ViewDebug.DEBUG_LATENCY_TAG, "- unlockCanvasAndPost() took " 2185 + ((now - unlockCanvasAndPostStartTime) * 0.000001f) + "ms"); 2186 } 2187 2188 if (LOCAL_LOGV) { 2189 Log.v(TAG, "Surface " + surface + " unlockCanvasAndPost"); 2190 } 2191 } 2192 } 2193 } 2194 2195 if (animating) { 2196 mFullRedrawNeeded = true; 2197 scheduleTraversals(); 2198 } 2199 } 2200 2201 boolean scrollToRectOrFocus(Rect rectangle, boolean immediate) { 2202 final View.AttachInfo attachInfo = mAttachInfo; 2203 final Rect ci = attachInfo.mContentInsets; 2204 final Rect vi = attachInfo.mVisibleInsets; 2205 int scrollY = 0; 2206 boolean handled = false; 2207 2208 if (vi.left > ci.left || vi.top > ci.top 2209 || vi.right > ci.right || vi.bottom > ci.bottom) { 2210 // We'll assume that we aren't going to change the scroll 2211 // offset, since we want to avoid that unless it is actually 2212 // going to make the focus visible... otherwise we scroll 2213 // all over the place. 2214 scrollY = mScrollY; 2215 // We can be called for two different situations: during a draw, 2216 // to update the scroll position if the focus has changed (in which 2217 // case 'rectangle' is null), or in response to a 2218 // requestChildRectangleOnScreen() call (in which case 'rectangle' 2219 // is non-null and we just want to scroll to whatever that 2220 // rectangle is). 2221 View focus = mRealFocusedView; 2222 2223 // When in touch mode, focus points to the previously focused view, 2224 // which may have been removed from the view hierarchy. The following 2225 // line checks whether the view is still in our hierarchy. 2226 if (focus == null || focus.mAttachInfo != mAttachInfo) { 2227 mRealFocusedView = null; 2228 return false; 2229 } 2230 2231 if (focus != mLastScrolledFocus) { 2232 // If the focus has changed, then ignore any requests to scroll 2233 // to a rectangle; first we want to make sure the entire focus 2234 // view is visible. 2235 rectangle = null; 2236 } 2237 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Eval scroll: focus=" + focus 2238 + " rectangle=" + rectangle + " ci=" + ci 2239 + " vi=" + vi); 2240 if (focus == mLastScrolledFocus && !mScrollMayChange 2241 && rectangle == null) { 2242 // Optimization: if the focus hasn't changed since last 2243 // time, and no layout has happened, then just leave things 2244 // as they are. 2245 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Keeping scroll y=" 2246 + mScrollY + " vi=" + vi.toShortString()); 2247 } else if (focus != null) { 2248 // We need to determine if the currently focused view is 2249 // within the visible part of the window and, if not, apply 2250 // a pan so it can be seen. 2251 mLastScrolledFocus = focus; 2252 mScrollMayChange = false; 2253 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Need to scroll?"); 2254 // Try to find the rectangle from the focus view. 2255 if (focus.getGlobalVisibleRect(mVisRect, null)) { 2256 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Root w=" 2257 + mView.getWidth() + " h=" + mView.getHeight() 2258 + " ci=" + ci.toShortString() 2259 + " vi=" + vi.toShortString()); 2260 if (rectangle == null) { 2261 focus.getFocusedRect(mTempRect); 2262 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Focus " + focus 2263 + ": focusRect=" + mTempRect.toShortString()); 2264 if (mView instanceof ViewGroup) { 2265 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 2266 focus, mTempRect); 2267 } 2268 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2269 "Focus in window: focusRect=" 2270 + mTempRect.toShortString() 2271 + " visRect=" + mVisRect.toShortString()); 2272 } else { 2273 mTempRect.set(rectangle); 2274 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2275 "Request scroll to rect: " 2276 + mTempRect.toShortString() 2277 + " visRect=" + mVisRect.toShortString()); 2278 } 2279 if (mTempRect.intersect(mVisRect)) { 2280 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2281 "Focus window visible rect: " 2282 + mTempRect.toShortString()); 2283 if (mTempRect.height() > 2284 (mView.getHeight()-vi.top-vi.bottom)) { 2285 // If the focus simply is not going to fit, then 2286 // best is probably just to leave things as-is. 2287 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2288 "Too tall; leaving scrollY=" + scrollY); 2289 } else if ((mTempRect.top-scrollY) < vi.top) { 2290 scrollY -= vi.top - (mTempRect.top-scrollY); 2291 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2292 "Top covered; scrollY=" + scrollY); 2293 } else if ((mTempRect.bottom-scrollY) 2294 > (mView.getHeight()-vi.bottom)) { 2295 scrollY += (mTempRect.bottom-scrollY) 2296 - (mView.getHeight()-vi.bottom); 2297 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2298 "Bottom covered; scrollY=" + scrollY); 2299 } 2300 handled = true; 2301 } 2302 } 2303 } 2304 } 2305 2306 if (scrollY != mScrollY) { 2307 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Pan scroll changed: old=" 2308 + mScrollY + " , new=" + scrollY); 2309 if (!immediate && mResizeBuffer == null) { 2310 if (mScroller == null) { 2311 mScroller = new Scroller(mView.getContext()); 2312 } 2313 mScroller.startScroll(0, mScrollY, 0, scrollY-mScrollY); 2314 } else if (mScroller != null) { 2315 mScroller.abortAnimation(); 2316 } 2317 mScrollY = scrollY; 2318 } 2319 2320 return handled; 2321 } 2322 2323 public void requestChildFocus(View child, View focused) { 2324 checkThread(); 2325 2326 if (DEBUG_INPUT_RESIZE) { 2327 Log.v(TAG, "Request child focus: focus now " + focused); 2328 } 2329 2330 mAttachInfo.mTreeObserver.dispatchOnGlobalFocusChange(mOldFocusedView, focused); 2331 scheduleTraversals(); 2332 2333 mFocusedView = mRealFocusedView = focused; 2334 } 2335 2336 public void clearChildFocus(View child) { 2337 checkThread(); 2338 2339 if (DEBUG_INPUT_RESIZE) { 2340 Log.v(TAG, "Clearing child focus"); 2341 } 2342 2343 mOldFocusedView = mFocusedView; 2344 2345 // Invoke the listener only if there is no view to take focus 2346 if (focusSearch(null, View.FOCUS_FORWARD) == null) { 2347 mAttachInfo.mTreeObserver.dispatchOnGlobalFocusChange(mOldFocusedView, null); 2348 } 2349 2350 mFocusedView = mRealFocusedView = null; 2351 } 2352 2353 public void focusableViewAvailable(View v) { 2354 checkThread(); 2355 2356 if (mView != null) { 2357 if (!mView.hasFocus()) { 2358 v.requestFocus(); 2359 } else { 2360 // the one case where will transfer focus away from the current one 2361 // is if the current view is a view group that prefers to give focus 2362 // to its children first AND the view is a descendant of it. 2363 mFocusedView = mView.findFocus(); 2364 boolean descendantsHaveDibsOnFocus = 2365 (mFocusedView instanceof ViewGroup) && 2366 (((ViewGroup) mFocusedView).getDescendantFocusability() == 2367 ViewGroup.FOCUS_AFTER_DESCENDANTS); 2368 if (descendantsHaveDibsOnFocus && isViewDescendantOf(v, mFocusedView)) { 2369 // If a view gets the focus, the listener will be invoked from requestChildFocus() 2370 v.requestFocus(); 2371 } 2372 } 2373 } 2374 } 2375 2376 public void recomputeViewAttributes(View child) { 2377 checkThread(); 2378 if (mView == child) { 2379 mAttachInfo.mRecomputeGlobalAttributes = true; 2380 if (!mWillDrawSoon) { 2381 scheduleTraversals(); 2382 } 2383 } 2384 } 2385 2386 void dispatchDetachedFromWindow() { 2387 if (mView != null && mView.mAttachInfo != null) { 2388 if (mAttachInfo.mHardwareRenderer != null && 2389 mAttachInfo.mHardwareRenderer.isEnabled()) { 2390 mAttachInfo.mHardwareRenderer.validate(); 2391 } 2392 mView.dispatchDetachedFromWindow(); 2393 } 2394 2395 mAccessibilityInteractionConnectionManager.ensureNoConnection(); 2396 mAccessibilityManager.removeAccessibilityStateChangeListener( 2397 mAccessibilityInteractionConnectionManager); 2398 removeSendWindowContentChangedCallback(); 2399 2400 mView = null; 2401 mAttachInfo.mRootView = null; 2402 mAttachInfo.mSurface = null; 2403 2404 destroyHardwareRenderer(); 2405 2406 mSurface.release(); 2407 2408 if (mInputQueueCallback != null && mInputQueue != null) { 2409 mInputQueueCallback.onInputQueueDestroyed(mInputQueue); 2410 mInputQueueCallback = null; 2411 mInputQueue = null; 2412 } else if (mInputEventReceiver != null) { 2413 mInputEventReceiver.dispose(); 2414 mInputEventReceiver = null; 2415 } 2416 try { 2417 sWindowSession.remove(mWindow); 2418 } catch (RemoteException e) { 2419 } 2420 2421 // Dispose the input channel after removing the window so the Window Manager 2422 // doesn't interpret the input channel being closed as an abnormal termination. 2423 if (mInputChannel != null) { 2424 mInputChannel.dispose(); 2425 mInputChannel = null; 2426 } 2427 2428 unscheduleFrame(); 2429 } 2430 2431 void updateConfiguration(Configuration config, boolean force) { 2432 if (DEBUG_CONFIGURATION) Log.v(TAG, 2433 "Applying new config to window " 2434 + mWindowAttributes.getTitle() 2435 + ": " + config); 2436 2437 CompatibilityInfo ci = mCompatibilityInfo.getIfNeeded(); 2438 if (ci != null) { 2439 config = new Configuration(config); 2440 ci.applyToConfiguration(config); 2441 } 2442 2443 synchronized (sConfigCallbacks) { 2444 for (int i=sConfigCallbacks.size()-1; i>=0; i--) { 2445 sConfigCallbacks.get(i).onConfigurationChanged(config); 2446 } 2447 } 2448 if (mView != null) { 2449 // At this point the resources have been updated to 2450 // have the most recent config, whatever that is. Use 2451 // the on in them which may be newer. 2452 config = mView.getResources().getConfiguration(); 2453 if (force || mLastConfiguration.diff(config) != 0) { 2454 mLastConfiguration.setTo(config); 2455 mView.dispatchConfigurationChanged(config); 2456 } 2457 } 2458 } 2459 2460 /** 2461 * Return true if child is an ancestor of parent, (or equal to the parent). 2462 */ 2463 private static boolean isViewDescendantOf(View child, View parent) { 2464 if (child == parent) { 2465 return true; 2466 } 2467 2468 final ViewParent theParent = child.getParent(); 2469 return (theParent instanceof ViewGroup) && isViewDescendantOf((View) theParent, parent); 2470 } 2471 2472 private static void forceLayout(View view) { 2473 view.forceLayout(); 2474 if (view instanceof ViewGroup) { 2475 ViewGroup group = (ViewGroup) view; 2476 final int count = group.getChildCount(); 2477 for (int i = 0; i < count; i++) { 2478 forceLayout(group.getChildAt(i)); 2479 } 2480 } 2481 } 2482 2483 private final static int MSG_INVALIDATE = 1; 2484 private final static int MSG_INVALIDATE_RECT = 2; 2485 private final static int MSG_DIE = 3; 2486 private final static int MSG_RESIZED = 4; 2487 private final static int MSG_RESIZED_REPORT = 5; 2488 private final static int MSG_WINDOW_FOCUS_CHANGED = 6; 2489 private final static int MSG_DISPATCH_KEY = 7; 2490 private final static int MSG_DISPATCH_APP_VISIBILITY = 8; 2491 private final static int MSG_DISPATCH_GET_NEW_SURFACE = 9; 2492 private final static int MSG_IME_FINISHED_EVENT = 10; 2493 private final static int MSG_DISPATCH_KEY_FROM_IME = 11; 2494 private final static int MSG_FINISH_INPUT_CONNECTION = 12; 2495 private final static int MSG_CHECK_FOCUS = 13; 2496 private final static int MSG_CLOSE_SYSTEM_DIALOGS = 14; 2497 private final static int MSG_DISPATCH_DRAG_EVENT = 15; 2498 private final static int MSG_DISPATCH_DRAG_LOCATION_EVENT = 16; 2499 private final static int MSG_DISPATCH_SYSTEM_UI_VISIBILITY = 17; 2500 private final static int MSG_UPDATE_CONFIGURATION = 18; 2501 private final static int MSG_PERFORM_ACCESSIBILITY_ACTION = 19; 2502 private final static int MSG_FIND_ACCESSIBLITY_NODE_INFO_BY_ACCESSIBILITY_ID = 20; 2503 private final static int MSG_FIND_ACCESSIBLITY_NODE_INFO_BY_VIEW_ID = 21; 2504 private final static int MSG_FIND_ACCESSIBLITY_NODE_INFO_BY_TEXT = 22; 2505 private final static int MSG_PROCESS_INPUT_EVENTS = 23; 2506 private final static int MSG_DISPATCH_SCREEN_STATE = 24; 2507 2508 final class ViewRootHandler extends Handler { 2509 @Override 2510 public String getMessageName(Message message) { 2511 switch (message.what) { 2512 case MSG_INVALIDATE: 2513 return "MSG_INVALIDATE"; 2514 case MSG_INVALIDATE_RECT: 2515 return "MSG_INVALIDATE_RECT"; 2516 case MSG_DIE: 2517 return "MSG_DIE"; 2518 case MSG_RESIZED: 2519 return "MSG_RESIZED"; 2520 case MSG_RESIZED_REPORT: 2521 return "MSG_RESIZED_REPORT"; 2522 case MSG_WINDOW_FOCUS_CHANGED: 2523 return "MSG_WINDOW_FOCUS_CHANGED"; 2524 case MSG_DISPATCH_KEY: 2525 return "MSG_DISPATCH_KEY"; 2526 case MSG_DISPATCH_APP_VISIBILITY: 2527 return "MSG_DISPATCH_APP_VISIBILITY"; 2528 case MSG_DISPATCH_GET_NEW_SURFACE: 2529 return "MSG_DISPATCH_GET_NEW_SURFACE"; 2530 case MSG_IME_FINISHED_EVENT: 2531 return "MSG_IME_FINISHED_EVENT"; 2532 case MSG_DISPATCH_KEY_FROM_IME: 2533 return "MSG_DISPATCH_KEY_FROM_IME"; 2534 case MSG_FINISH_INPUT_CONNECTION: 2535 return "MSG_FINISH_INPUT_CONNECTION"; 2536 case MSG_CHECK_FOCUS: 2537 return "MSG_CHECK_FOCUS"; 2538 case MSG_CLOSE_SYSTEM_DIALOGS: 2539 return "MSG_CLOSE_SYSTEM_DIALOGS"; 2540 case MSG_DISPATCH_DRAG_EVENT: 2541 return "MSG_DISPATCH_DRAG_EVENT"; 2542 case MSG_DISPATCH_DRAG_LOCATION_EVENT: 2543 return "MSG_DISPATCH_DRAG_LOCATION_EVENT"; 2544 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: 2545 return "MSG_DISPATCH_SYSTEM_UI_VISIBILITY"; 2546 case MSG_UPDATE_CONFIGURATION: 2547 return "MSG_UPDATE_CONFIGURATION"; 2548 case MSG_PERFORM_ACCESSIBILITY_ACTION: 2549 return "MSG_PERFORM_ACCESSIBILITY_ACTION"; 2550 case MSG_FIND_ACCESSIBLITY_NODE_INFO_BY_ACCESSIBILITY_ID: 2551 return "MSG_FIND_ACCESSIBLITY_NODE_INFO_BY_ACCESSIBILITY_ID"; 2552 case MSG_FIND_ACCESSIBLITY_NODE_INFO_BY_VIEW_ID: 2553 return "MSG_FIND_ACCESSIBLITY_NODE_INFO_BY_VIEW_ID"; 2554 case MSG_FIND_ACCESSIBLITY_NODE_INFO_BY_TEXT: 2555 return "MSG_FIND_ACCESSIBLITY_NODE_INFO_BY_TEXT"; 2556 case MSG_PROCESS_INPUT_EVENTS: 2557 return "MSG_PROCESS_INPUT_EVENTS"; 2558 } 2559 return super.getMessageName(message); 2560 } 2561 2562 @Override 2563 public void handleMessage(Message msg) { 2564 switch (msg.what) { 2565 case MSG_INVALIDATE: 2566 ((View) msg.obj).invalidate(); 2567 break; 2568 case MSG_INVALIDATE_RECT: 2569 final View.AttachInfo.InvalidateInfo info = (View.AttachInfo.InvalidateInfo) msg.obj; 2570 info.target.invalidate(info.left, info.top, info.right, info.bottom); 2571 info.release(); 2572 break; 2573 case MSG_IME_FINISHED_EVENT: 2574 handleImeFinishedEvent(msg.arg1, msg.arg2 != 0); 2575 break; 2576 case MSG_PROCESS_INPUT_EVENTS: 2577 mProcessInputEventsScheduled = false; 2578 doProcessInputEvents(); 2579 break; 2580 case MSG_DISPATCH_APP_VISIBILITY: 2581 handleAppVisibility(msg.arg1 != 0); 2582 break; 2583 case MSG_DISPATCH_GET_NEW_SURFACE: 2584 handleGetNewSurface(); 2585 break; 2586 case MSG_RESIZED: 2587 ResizedInfo ri = (ResizedInfo)msg.obj; 2588 2589 if (mWinFrame.width() == msg.arg1 && mWinFrame.height() == msg.arg2 2590 && mPendingContentInsets.equals(ri.coveredInsets) 2591 && mPendingVisibleInsets.equals(ri.visibleInsets) 2592 && ((ResizedInfo)msg.obj).newConfig == null) { 2593 break; 2594 } 2595 // fall through... 2596 case MSG_RESIZED_REPORT: 2597 if (mAdded) { 2598 Configuration config = ((ResizedInfo)msg.obj).newConfig; 2599 if (config != null) { 2600 updateConfiguration(config, false); 2601 } 2602 mWinFrame.left = 0; 2603 mWinFrame.right = msg.arg1; 2604 mWinFrame.top = 0; 2605 mWinFrame.bottom = msg.arg2; 2606 mPendingContentInsets.set(((ResizedInfo)msg.obj).coveredInsets); 2607 mPendingVisibleInsets.set(((ResizedInfo)msg.obj).visibleInsets); 2608 if (msg.what == MSG_RESIZED_REPORT) { 2609 mReportNextDraw = true; 2610 } 2611 2612 if (mView != null) { 2613 forceLayout(mView); 2614 } 2615 requestLayout(); 2616 } 2617 break; 2618 case MSG_WINDOW_FOCUS_CHANGED: { 2619 if (mAdded) { 2620 boolean hasWindowFocus = msg.arg1 != 0; 2621 mAttachInfo.mHasWindowFocus = hasWindowFocus; 2622 2623 profileRendering(hasWindowFocus); 2624 2625 if (hasWindowFocus) { 2626 boolean inTouchMode = msg.arg2 != 0; 2627 ensureTouchModeLocally(inTouchMode); 2628 2629 if (mAttachInfo.mHardwareRenderer != null && 2630 mSurface != null && mSurface.isValid()) { 2631 mFullRedrawNeeded = true; 2632 try { 2633 mAttachInfo.mHardwareRenderer.initializeIfNeeded(mWidth, mHeight, 2634 mHolder); 2635 } catch (Surface.OutOfResourcesException e) { 2636 Log.e(TAG, "OutOfResourcesException locking surface", e); 2637 try { 2638 if (!sWindowSession.outOfMemory(mWindow)) { 2639 Slog.w(TAG, "No processes killed for memory; killing self"); 2640 Process.killProcess(Process.myPid()); 2641 } 2642 } catch (RemoteException ex) { 2643 } 2644 // Retry in a bit. 2645 sendMessageDelayed(obtainMessage(msg.what, msg.arg1, msg.arg2), 500); 2646 return; 2647 } 2648 } 2649 } 2650 2651 mLastWasImTarget = WindowManager.LayoutParams 2652 .mayUseInputMethod(mWindowAttributes.flags); 2653 2654 InputMethodManager imm = InputMethodManager.peekInstance(); 2655 if (mView != null) { 2656 if (hasWindowFocus && imm != null && mLastWasImTarget) { 2657 imm.startGettingWindowFocus(mView); 2658 } 2659 mAttachInfo.mKeyDispatchState.reset(); 2660 mView.dispatchWindowFocusChanged(hasWindowFocus); 2661 } 2662 2663 // Note: must be done after the focus change callbacks, 2664 // so all of the view state is set up correctly. 2665 if (hasWindowFocus) { 2666 if (imm != null && mLastWasImTarget) { 2667 imm.onWindowFocus(mView, mView.findFocus(), 2668 mWindowAttributes.softInputMode, 2669 !mHasHadWindowFocus, mWindowAttributes.flags); 2670 } 2671 // Clear the forward bit. We can just do this directly, since 2672 // the window manager doesn't care about it. 2673 mWindowAttributes.softInputMode &= 2674 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 2675 ((WindowManager.LayoutParams)mView.getLayoutParams()) 2676 .softInputMode &= 2677 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 2678 mHasHadWindowFocus = true; 2679 } 2680 2681 if (hasWindowFocus && mView != null && mAccessibilityManager.isEnabled()) { 2682 mView.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 2683 } 2684 } 2685 } break; 2686 case MSG_DIE: 2687 doDie(); 2688 break; 2689 case MSG_DISPATCH_KEY: { 2690 KeyEvent event = (KeyEvent)msg.obj; 2691 enqueueInputEvent(event, null, 0, true); 2692 } break; 2693 case MSG_DISPATCH_KEY_FROM_IME: { 2694 if (LOCAL_LOGV) Log.v( 2695 TAG, "Dispatching key " 2696 + msg.obj + " from IME to " + mView); 2697 KeyEvent event = (KeyEvent)msg.obj; 2698 if ((event.getFlags()&KeyEvent.FLAG_FROM_SYSTEM) != 0) { 2699 // The IME is trying to say this event is from the 2700 // system! Bad bad bad! 2701 //noinspection UnusedAssignment 2702 event = KeyEvent.changeFlags(event, event.getFlags() & ~KeyEvent.FLAG_FROM_SYSTEM); 2703 } 2704 enqueueInputEvent(event, null, QueuedInputEvent.FLAG_DELIVER_POST_IME, true); 2705 } break; 2706 case MSG_FINISH_INPUT_CONNECTION: { 2707 InputMethodManager imm = InputMethodManager.peekInstance(); 2708 if (imm != null) { 2709 imm.reportFinishInputConnection((InputConnection)msg.obj); 2710 } 2711 } break; 2712 case MSG_CHECK_FOCUS: { 2713 InputMethodManager imm = InputMethodManager.peekInstance(); 2714 if (imm != null) { 2715 imm.checkFocus(); 2716 } 2717 } break; 2718 case MSG_CLOSE_SYSTEM_DIALOGS: { 2719 if (mView != null) { 2720 mView.onCloseSystemDialogs((String)msg.obj); 2721 } 2722 } break; 2723 case MSG_DISPATCH_DRAG_EVENT: 2724 case MSG_DISPATCH_DRAG_LOCATION_EVENT: { 2725 DragEvent event = (DragEvent)msg.obj; 2726 event.mLocalState = mLocalDragState; // only present when this app called startDrag() 2727 handleDragEvent(event); 2728 } break; 2729 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: { 2730 handleDispatchSystemUiVisibilityChanged((SystemUiVisibilityInfo)msg.obj); 2731 } break; 2732 case MSG_UPDATE_CONFIGURATION: { 2733 Configuration config = (Configuration)msg.obj; 2734 if (config.isOtherSeqNewer(mLastConfiguration)) { 2735 config = mLastConfiguration; 2736 } 2737 updateConfiguration(config, false); 2738 } break; 2739 case MSG_FIND_ACCESSIBLITY_NODE_INFO_BY_ACCESSIBILITY_ID: { 2740 if (mView != null) { 2741 getAccessibilityInteractionController() 2742 .findAccessibilityNodeInfoByAccessibilityIdUiThread(msg); 2743 } 2744 } break; 2745 case MSG_PERFORM_ACCESSIBILITY_ACTION: { 2746 if (mView != null) { 2747 getAccessibilityInteractionController() 2748 .perfromAccessibilityActionUiThread(msg); 2749 } 2750 } break; 2751 case MSG_FIND_ACCESSIBLITY_NODE_INFO_BY_VIEW_ID: { 2752 if (mView != null) { 2753 getAccessibilityInteractionController() 2754 .findAccessibilityNodeInfoByViewIdUiThread(msg); 2755 } 2756 } break; 2757 case MSG_FIND_ACCESSIBLITY_NODE_INFO_BY_TEXT: { 2758 if (mView != null) { 2759 getAccessibilityInteractionController() 2760 .findAccessibilityNodeInfosByTextUiThread(msg); 2761 } 2762 } break; 2763 case MSG_DISPATCH_SCREEN_STATE: { 2764 if (mView != null) { 2765 handleScreenStateChange(msg.arg1 == 1); 2766 } 2767 } break; 2768 } 2769 } 2770 } 2771 final ViewRootHandler mHandler = new ViewRootHandler(); 2772 2773 /** 2774 * Something in the current window tells us we need to change the touch mode. For 2775 * example, we are not in touch mode, and the user touches the screen. 2776 * 2777 * If the touch mode has changed, tell the window manager, and handle it locally. 2778 * 2779 * @param inTouchMode Whether we want to be in touch mode. 2780 * @return True if the touch mode changed and focus changed was changed as a result 2781 */ 2782 boolean ensureTouchMode(boolean inTouchMode) { 2783 if (DBG) Log.d("touchmode", "ensureTouchMode(" + inTouchMode + "), current " 2784 + "touch mode is " + mAttachInfo.mInTouchMode); 2785 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 2786 2787 // tell the window manager 2788 try { 2789 sWindowSession.setInTouchMode(inTouchMode); 2790 } catch (RemoteException e) { 2791 throw new RuntimeException(e); 2792 } 2793 2794 // handle the change 2795 return ensureTouchModeLocally(inTouchMode); 2796 } 2797 2798 /** 2799 * Ensure that the touch mode for this window is set, and if it is changing, 2800 * take the appropriate action. 2801 * @param inTouchMode Whether we want to be in touch mode. 2802 * @return True if the touch mode changed and focus changed was changed as a result 2803 */ 2804 private boolean ensureTouchModeLocally(boolean inTouchMode) { 2805 if (DBG) Log.d("touchmode", "ensureTouchModeLocally(" + inTouchMode + "), current " 2806 + "touch mode is " + mAttachInfo.mInTouchMode); 2807 2808 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 2809 2810 mAttachInfo.mInTouchMode = inTouchMode; 2811 mAttachInfo.mTreeObserver.dispatchOnTouchModeChanged(inTouchMode); 2812 2813 return (inTouchMode) ? enterTouchMode() : leaveTouchMode(); 2814 } 2815 2816 private boolean enterTouchMode() { 2817 if (mView != null) { 2818 if (mView.hasFocus()) { 2819 // note: not relying on mFocusedView here because this could 2820 // be when the window is first being added, and mFocused isn't 2821 // set yet. 2822 final View focused = mView.findFocus(); 2823 if (focused != null && !focused.isFocusableInTouchMode()) { 2824 2825 final ViewGroup ancestorToTakeFocus = 2826 findAncestorToTakeFocusInTouchMode(focused); 2827 if (ancestorToTakeFocus != null) { 2828 // there is an ancestor that wants focus after its descendants that 2829 // is focusable in touch mode.. give it focus 2830 return ancestorToTakeFocus.requestFocus(); 2831 } else { 2832 // nothing appropriate to have focus in touch mode, clear it out 2833 mView.unFocus(); 2834 mAttachInfo.mTreeObserver.dispatchOnGlobalFocusChange(focused, null); 2835 mFocusedView = null; 2836 mOldFocusedView = null; 2837 return true; 2838 } 2839 } 2840 } 2841 } 2842 return false; 2843 } 2844 2845 2846 /** 2847 * Find an ancestor of focused that wants focus after its descendants and is 2848 * focusable in touch mode. 2849 * @param focused The currently focused view. 2850 * @return An appropriate view, or null if no such view exists. 2851 */ 2852 private ViewGroup findAncestorToTakeFocusInTouchMode(View focused) { 2853 ViewParent parent = focused.getParent(); 2854 while (parent instanceof ViewGroup) { 2855 final ViewGroup vgParent = (ViewGroup) parent; 2856 if (vgParent.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 2857 && vgParent.isFocusableInTouchMode()) { 2858 return vgParent; 2859 } 2860 if (vgParent.isRootNamespace()) { 2861 return null; 2862 } else { 2863 parent = vgParent.getParent(); 2864 } 2865 } 2866 return null; 2867 } 2868 2869 private boolean leaveTouchMode() { 2870 if (mView != null) { 2871 if (mView.hasFocus()) { 2872 // i learned the hard way to not trust mFocusedView :) 2873 mFocusedView = mView.findFocus(); 2874 if (!(mFocusedView instanceof ViewGroup)) { 2875 // some view has focus, let it keep it 2876 return false; 2877 } else if (((ViewGroup)mFocusedView).getDescendantFocusability() != 2878 ViewGroup.FOCUS_AFTER_DESCENDANTS) { 2879 // some view group has focus, and doesn't prefer its children 2880 // over itself for focus, so let them keep it. 2881 return false; 2882 } 2883 } 2884 2885 // find the best view to give focus to in this brave new non-touch-mode 2886 // world 2887 final View focused = focusSearch(null, View.FOCUS_DOWN); 2888 if (focused != null) { 2889 return focused.requestFocus(View.FOCUS_DOWN); 2890 } 2891 } 2892 return false; 2893 } 2894 2895 private void deliverInputEvent(QueuedInputEvent q) { 2896 if (ViewDebug.DEBUG_LATENCY) { 2897 q.mDeliverTimeNanos = System.nanoTime(); 2898 } 2899 2900 if (q.mEvent instanceof KeyEvent) { 2901 deliverKeyEvent(q); 2902 } else { 2903 final int source = q.mEvent.getSource(); 2904 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 2905 deliverPointerEvent(q); 2906 } else if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 2907 deliverTrackballEvent(q); 2908 } else { 2909 deliverGenericMotionEvent(q); 2910 } 2911 } 2912 } 2913 2914 private void deliverPointerEvent(QueuedInputEvent q) { 2915 final MotionEvent event = (MotionEvent)q.mEvent; 2916 final boolean isTouchEvent = event.isTouchEvent(); 2917 if (mInputEventConsistencyVerifier != null) { 2918 if (isTouchEvent) { 2919 mInputEventConsistencyVerifier.onTouchEvent(event, 0); 2920 } else { 2921 mInputEventConsistencyVerifier.onGenericMotionEvent(event, 0); 2922 } 2923 } 2924 2925 // If there is no view, then the event will not be handled. 2926 if (mView == null || !mAdded) { 2927 finishInputEvent(q, false); 2928 return; 2929 } 2930 2931 // Translate the pointer event for compatibility, if needed. 2932 if (mTranslator != null) { 2933 mTranslator.translateEventInScreenToAppWindow(event); 2934 } 2935 2936 // Enter touch mode on down or scroll. 2937 final int action = event.getAction(); 2938 if (action == MotionEvent.ACTION_DOWN || action == MotionEvent.ACTION_SCROLL) { 2939 ensureTouchMode(true); 2940 } 2941 2942 // Offset the scroll position. 2943 if (mCurScrollY != 0) { 2944 event.offsetLocation(0, mCurScrollY); 2945 } 2946 if (MEASURE_LATENCY) { 2947 lt.sample("A Dispatching PointerEvents", System.nanoTime() - event.getEventTimeNano()); 2948 } 2949 2950 // Remember the touch position for possible drag-initiation. 2951 if (isTouchEvent) { 2952 mLastTouchPoint.x = event.getRawX(); 2953 mLastTouchPoint.y = event.getRawY(); 2954 } 2955 2956 // Dispatch touch to view hierarchy. 2957 boolean handled = mView.dispatchPointerEvent(event); 2958 if (MEASURE_LATENCY) { 2959 lt.sample("B Dispatched PointerEvents ", System.nanoTime() - event.getEventTimeNano()); 2960 } 2961 if (handled) { 2962 finishInputEvent(q, true); 2963 return; 2964 } 2965 2966 // Pointer event was unhandled. 2967 finishInputEvent(q, false); 2968 } 2969 2970 private void deliverTrackballEvent(QueuedInputEvent q) { 2971 final MotionEvent event = (MotionEvent)q.mEvent; 2972 if (mInputEventConsistencyVerifier != null) { 2973 mInputEventConsistencyVerifier.onTrackballEvent(event, 0); 2974 } 2975 2976 // If there is no view, then the event will not be handled. 2977 if (mView == null || !mAdded) { 2978 finishInputEvent(q, false); 2979 return; 2980 } 2981 2982 // Deliver the trackball event to the view. 2983 if (mView.dispatchTrackballEvent(event)) { 2984 // If we reach this, we delivered a trackball event to mView and 2985 // mView consumed it. Because we will not translate the trackball 2986 // event into a key event, touch mode will not exit, so we exit 2987 // touch mode here. 2988 ensureTouchMode(false); 2989 2990 finishInputEvent(q, true); 2991 mLastTrackballTime = Integer.MIN_VALUE; 2992 return; 2993 } 2994 2995 // Translate the trackball event into DPAD keys and try to deliver those. 2996 final TrackballAxis x = mTrackballAxisX; 2997 final TrackballAxis y = mTrackballAxisY; 2998 2999 long curTime = SystemClock.uptimeMillis(); 3000 if ((mLastTrackballTime + MAX_TRACKBALL_DELAY) < curTime) { 3001 // It has been too long since the last movement, 3002 // so restart at the beginning. 3003 x.reset(0); 3004 y.reset(0); 3005 mLastTrackballTime = curTime; 3006 } 3007 3008 final int action = event.getAction(); 3009 final int metaState = event.getMetaState(); 3010 switch (action) { 3011 case MotionEvent.ACTION_DOWN: 3012 x.reset(2); 3013 y.reset(2); 3014 enqueueInputEvent(new KeyEvent(curTime, curTime, 3015 KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 3016 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 3017 InputDevice.SOURCE_KEYBOARD)); 3018 break; 3019 case MotionEvent.ACTION_UP: 3020 x.reset(2); 3021 y.reset(2); 3022 enqueueInputEvent(new KeyEvent(curTime, curTime, 3023 KeyEvent.ACTION_UP, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 3024 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 3025 InputDevice.SOURCE_KEYBOARD)); 3026 break; 3027 } 3028 3029 if (DEBUG_TRACKBALL) Log.v(TAG, "TB X=" + x.position + " step=" 3030 + x.step + " dir=" + x.dir + " acc=" + x.acceleration 3031 + " move=" + event.getX() 3032 + " / Y=" + y.position + " step=" 3033 + y.step + " dir=" + y.dir + " acc=" + y.acceleration 3034 + " move=" + event.getY()); 3035 final float xOff = x.collect(event.getX(), event.getEventTime(), "X"); 3036 final float yOff = y.collect(event.getY(), event.getEventTime(), "Y"); 3037 3038 // Generate DPAD events based on the trackball movement. 3039 // We pick the axis that has moved the most as the direction of 3040 // the DPAD. When we generate DPAD events for one axis, then the 3041 // other axis is reset -- we don't want to perform DPAD jumps due 3042 // to slight movements in the trackball when making major movements 3043 // along the other axis. 3044 int keycode = 0; 3045 int movement = 0; 3046 float accel = 1; 3047 if (xOff > yOff) { 3048 movement = x.generate((2/event.getXPrecision())); 3049 if (movement != 0) { 3050 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_RIGHT 3051 : KeyEvent.KEYCODE_DPAD_LEFT; 3052 accel = x.acceleration; 3053 y.reset(2); 3054 } 3055 } else if (yOff > 0) { 3056 movement = y.generate((2/event.getYPrecision())); 3057 if (movement != 0) { 3058 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_DOWN 3059 : KeyEvent.KEYCODE_DPAD_UP; 3060 accel = y.acceleration; 3061 x.reset(2); 3062 } 3063 } 3064 3065 if (keycode != 0) { 3066 if (movement < 0) movement = -movement; 3067 int accelMovement = (int)(movement * accel); 3068 if (DEBUG_TRACKBALL) Log.v(TAG, "Move: movement=" + movement 3069 + " accelMovement=" + accelMovement 3070 + " accel=" + accel); 3071 if (accelMovement > movement) { 3072 if (DEBUG_TRACKBALL) Log.v("foo", "Delivering fake DPAD: " 3073 + keycode); 3074 movement--; 3075 int repeatCount = accelMovement - movement; 3076 enqueueInputEvent(new KeyEvent(curTime, curTime, 3077 KeyEvent.ACTION_MULTIPLE, keycode, repeatCount, metaState, 3078 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 3079 InputDevice.SOURCE_KEYBOARD)); 3080 } 3081 while (movement > 0) { 3082 if (DEBUG_TRACKBALL) Log.v("foo", "Delivering fake DPAD: " 3083 + keycode); 3084 movement--; 3085 curTime = SystemClock.uptimeMillis(); 3086 enqueueInputEvent(new KeyEvent(curTime, curTime, 3087 KeyEvent.ACTION_DOWN, keycode, 0, metaState, 3088 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 3089 InputDevice.SOURCE_KEYBOARD)); 3090 enqueueInputEvent(new KeyEvent(curTime, curTime, 3091 KeyEvent.ACTION_UP, keycode, 0, metaState, 3092 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 3093 InputDevice.SOURCE_KEYBOARD)); 3094 } 3095 mLastTrackballTime = curTime; 3096 } 3097 3098 // Unfortunately we can't tell whether the application consumed the keys, so 3099 // we always consider the trackball event handled. 3100 finishInputEvent(q, true); 3101 } 3102 3103 private void deliverGenericMotionEvent(QueuedInputEvent q) { 3104 final MotionEvent event = (MotionEvent)q.mEvent; 3105 if (mInputEventConsistencyVerifier != null) { 3106 mInputEventConsistencyVerifier.onGenericMotionEvent(event, 0); 3107 } 3108 3109 final int source = event.getSource(); 3110 final boolean isJoystick = (source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0; 3111 3112 // If there is no view, then the event will not be handled. 3113 if (mView == null || !mAdded) { 3114 if (isJoystick) { 3115 updateJoystickDirection(event, false); 3116 } 3117 finishInputEvent(q, false); 3118 return; 3119 } 3120 3121 // Deliver the event to the view. 3122 if (mView.dispatchGenericMotionEvent(event)) { 3123 if (isJoystick) { 3124 updateJoystickDirection(event, false); 3125 } 3126 finishInputEvent(q, true); 3127 return; 3128 } 3129 3130 if (isJoystick) { 3131 // Translate the joystick event into DPAD keys and try to deliver those. 3132 updateJoystickDirection(event, true); 3133 finishInputEvent(q, true); 3134 } else { 3135 finishInputEvent(q, false); 3136 } 3137 } 3138 3139 private void updateJoystickDirection(MotionEvent event, boolean synthesizeNewKeys) { 3140 final long time = event.getEventTime(); 3141 final int metaState = event.getMetaState(); 3142 final int deviceId = event.getDeviceId(); 3143 final int source = event.getSource(); 3144 3145 int xDirection = joystickAxisValueToDirection(event.getAxisValue(MotionEvent.AXIS_HAT_X)); 3146 if (xDirection == 0) { 3147 xDirection = joystickAxisValueToDirection(event.getX()); 3148 } 3149 3150 int yDirection = joystickAxisValueToDirection(event.getAxisValue(MotionEvent.AXIS_HAT_Y)); 3151 if (yDirection == 0) { 3152 yDirection = joystickAxisValueToDirection(event.getY()); 3153 } 3154 3155 if (xDirection != mLastJoystickXDirection) { 3156 if (mLastJoystickXKeyCode != 0) { 3157 enqueueInputEvent(new KeyEvent(time, time, 3158 KeyEvent.ACTION_UP, mLastJoystickXKeyCode, 0, metaState, 3159 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 3160 mLastJoystickXKeyCode = 0; 3161 } 3162 3163 mLastJoystickXDirection = xDirection; 3164 3165 if (xDirection != 0 && synthesizeNewKeys) { 3166 mLastJoystickXKeyCode = xDirection > 0 3167 ? KeyEvent.KEYCODE_DPAD_RIGHT : KeyEvent.KEYCODE_DPAD_LEFT; 3168 enqueueInputEvent(new KeyEvent(time, time, 3169 KeyEvent.ACTION_DOWN, mLastJoystickXKeyCode, 0, metaState, 3170 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 3171 } 3172 } 3173 3174 if (yDirection != mLastJoystickYDirection) { 3175 if (mLastJoystickYKeyCode != 0) { 3176 enqueueInputEvent(new KeyEvent(time, time, 3177 KeyEvent.ACTION_UP, mLastJoystickYKeyCode, 0, metaState, 3178 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 3179 mLastJoystickYKeyCode = 0; 3180 } 3181 3182 mLastJoystickYDirection = yDirection; 3183 3184 if (yDirection != 0 && synthesizeNewKeys) { 3185 mLastJoystickYKeyCode = yDirection > 0 3186 ? KeyEvent.KEYCODE_DPAD_DOWN : KeyEvent.KEYCODE_DPAD_UP; 3187 enqueueInputEvent(new KeyEvent(time, time, 3188 KeyEvent.ACTION_DOWN, mLastJoystickYKeyCode, 0, metaState, 3189 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 3190 } 3191 } 3192 } 3193 3194 private static int joystickAxisValueToDirection(float value) { 3195 if (value >= 0.5f) { 3196 return 1; 3197 } else if (value <= -0.5f) { 3198 return -1; 3199 } else { 3200 return 0; 3201 } 3202 } 3203 3204 /** 3205 * Returns true if the key is used for keyboard navigation. 3206 * @param keyEvent The key event. 3207 * @return True if the key is used for keyboard navigation. 3208 */ 3209 private static boolean isNavigationKey(KeyEvent keyEvent) { 3210 switch (keyEvent.getKeyCode()) { 3211 case KeyEvent.KEYCODE_DPAD_LEFT: 3212 case KeyEvent.KEYCODE_DPAD_RIGHT: 3213 case KeyEvent.KEYCODE_DPAD_UP: 3214 case KeyEvent.KEYCODE_DPAD_DOWN: 3215 case KeyEvent.KEYCODE_DPAD_CENTER: 3216 case KeyEvent.KEYCODE_PAGE_UP: 3217 case KeyEvent.KEYCODE_PAGE_DOWN: 3218 case KeyEvent.KEYCODE_MOVE_HOME: 3219 case KeyEvent.KEYCODE_MOVE_END: 3220 case KeyEvent.KEYCODE_TAB: 3221 case KeyEvent.KEYCODE_SPACE: 3222 case KeyEvent.KEYCODE_ENTER: 3223 return true; 3224 } 3225 return false; 3226 } 3227 3228 /** 3229 * Returns true if the key is used for typing. 3230 * @param keyEvent The key event. 3231 * @return True if the key is used for typing. 3232 */ 3233 private static boolean isTypingKey(KeyEvent keyEvent) { 3234 return keyEvent.getUnicodeChar() > 0; 3235 } 3236 3237 /** 3238 * See if the key event means we should leave touch mode (and leave touch mode if so). 3239 * @param event The key event. 3240 * @return Whether this key event should be consumed (meaning the act of 3241 * leaving touch mode alone is considered the event). 3242 */ 3243 private boolean checkForLeavingTouchModeAndConsume(KeyEvent event) { 3244 // Only relevant in touch mode. 3245 if (!mAttachInfo.mInTouchMode) { 3246 return false; 3247 } 3248 3249 // Only consider leaving touch mode on DOWN or MULTIPLE actions, never on UP. 3250 final int action = event.getAction(); 3251 if (action != KeyEvent.ACTION_DOWN && action != KeyEvent.ACTION_MULTIPLE) { 3252 return false; 3253 } 3254 3255 // Don't leave touch mode if the IME told us not to. 3256 if ((event.getFlags() & KeyEvent.FLAG_KEEP_TOUCH_MODE) != 0) { 3257 return false; 3258 } 3259 3260 // If the key can be used for keyboard navigation then leave touch mode 3261 // and select a focused view if needed (in ensureTouchMode). 3262 // When a new focused view is selected, we consume the navigation key because 3263 // navigation doesn't make much sense unless a view already has focus so 3264 // the key's purpose is to set focus. 3265 if (isNavigationKey(event)) { 3266 return ensureTouchMode(false); 3267 } 3268 3269 // If the key can be used for typing then leave touch mode 3270 // and select a focused view if needed (in ensureTouchMode). 3271 // Always allow the view to process the typing key. 3272 if (isTypingKey(event)) { 3273 ensureTouchMode(false); 3274 return false; 3275 } 3276 3277 return false; 3278 } 3279 3280 private void deliverKeyEvent(QueuedInputEvent q) { 3281 final KeyEvent event = (KeyEvent)q.mEvent; 3282 if (mInputEventConsistencyVerifier != null) { 3283 mInputEventConsistencyVerifier.onKeyEvent(event, 0); 3284 } 3285 3286 if ((q.mFlags & QueuedInputEvent.FLAG_DELIVER_POST_IME) == 0) { 3287 // If there is no view, then the event will not be handled. 3288 if (mView == null || !mAdded) { 3289 finishInputEvent(q, false); 3290 return; 3291 } 3292 3293 if (LOCAL_LOGV) Log.v(TAG, "Dispatching key " + event + " to " + mView); 3294 3295 // Perform predispatching before the IME. 3296 if (mView.dispatchKeyEventPreIme(event)) { 3297 finishInputEvent(q, true); 3298 return; 3299 } 3300 3301 // Dispatch to the IME before propagating down the view hierarchy. 3302 // The IME will eventually call back into handleImeFinishedEvent. 3303 if (mLastWasImTarget) { 3304 InputMethodManager imm = InputMethodManager.peekInstance(); 3305 if (imm != null) { 3306 final int seq = event.getSequenceNumber(); 3307 if (DEBUG_IMF) Log.v(TAG, "Sending key event to IME: seq=" 3308 + seq + " event=" + event); 3309 imm.dispatchKeyEvent(mView.getContext(), seq, event, mInputMethodCallback); 3310 return; 3311 } 3312 } 3313 } 3314 3315 // Not dispatching to IME, continue with post IME actions. 3316 deliverKeyEventPostIme(q); 3317 } 3318 3319 void handleImeFinishedEvent(int seq, boolean handled) { 3320 final QueuedInputEvent q = mCurrentInputEvent; 3321 if (q != null && q.mEvent.getSequenceNumber() == seq) { 3322 final KeyEvent event = (KeyEvent)q.mEvent; 3323 if (DEBUG_IMF) { 3324 Log.v(TAG, "IME finished event: seq=" + seq 3325 + " handled=" + handled + " event=" + event); 3326 } 3327 if (handled) { 3328 finishInputEvent(q, true); 3329 } else { 3330 deliverKeyEventPostIme(q); 3331 } 3332 } else { 3333 if (DEBUG_IMF) { 3334 Log.v(TAG, "IME finished event: seq=" + seq 3335 + " handled=" + handled + ", event not found!"); 3336 } 3337 } 3338 } 3339 3340 private void deliverKeyEventPostIme(QueuedInputEvent q) { 3341 final KeyEvent event = (KeyEvent)q.mEvent; 3342 if (ViewDebug.DEBUG_LATENCY) { 3343 q.mDeliverPostImeTimeNanos = System.nanoTime(); 3344 } 3345 3346 // If the view went away, then the event will not be handled. 3347 if (mView == null || !mAdded) { 3348 finishInputEvent(q, false); 3349 return; 3350 } 3351 3352 // If the key's purpose is to exit touch mode then we consume it and consider it handled. 3353 if (checkForLeavingTouchModeAndConsume(event)) { 3354 finishInputEvent(q, true); 3355 return; 3356 } 3357 3358 // Make sure the fallback event policy sees all keys that will be delivered to the 3359 // view hierarchy. 3360 mFallbackEventHandler.preDispatchKeyEvent(event); 3361 3362 // Deliver the key to the view hierarchy. 3363 if (mView.dispatchKeyEvent(event)) { 3364 finishInputEvent(q, true); 3365 return; 3366 } 3367 3368 // If the Control modifier is held, try to interpret the key as a shortcut. 3369 if (event.getAction() == KeyEvent.ACTION_DOWN 3370 && event.isCtrlPressed() 3371 && event.getRepeatCount() == 0 3372 && !KeyEvent.isModifierKey(event.getKeyCode())) { 3373 if (mView.dispatchKeyShortcutEvent(event)) { 3374 finishInputEvent(q, true); 3375 return; 3376 } 3377 } 3378 3379 // Apply the fallback event policy. 3380 if (mFallbackEventHandler.dispatchKeyEvent(event)) { 3381 finishInputEvent(q, true); 3382 return; 3383 } 3384 3385 // Handle automatic focus changes. 3386 if (event.getAction() == KeyEvent.ACTION_DOWN) { 3387 int direction = 0; 3388 switch (event.getKeyCode()) { 3389 case KeyEvent.KEYCODE_DPAD_LEFT: 3390 if (event.hasNoModifiers()) { 3391 direction = View.FOCUS_LEFT; 3392 } 3393 break; 3394 case KeyEvent.KEYCODE_DPAD_RIGHT: 3395 if (event.hasNoModifiers()) { 3396 direction = View.FOCUS_RIGHT; 3397 } 3398 break; 3399 case KeyEvent.KEYCODE_DPAD_UP: 3400 if (event.hasNoModifiers()) { 3401 direction = View.FOCUS_UP; 3402 } 3403 break; 3404 case KeyEvent.KEYCODE_DPAD_DOWN: 3405 if (event.hasNoModifiers()) { 3406 direction = View.FOCUS_DOWN; 3407 } 3408 break; 3409 case KeyEvent.KEYCODE_TAB: 3410 if (event.hasNoModifiers()) { 3411 direction = View.FOCUS_FORWARD; 3412 } else if (event.hasModifiers(KeyEvent.META_SHIFT_ON)) { 3413 direction = View.FOCUS_BACKWARD; 3414 } 3415 break; 3416 } 3417 3418 if (direction != 0) { 3419 View focused = mView != null ? mView.findFocus() : null; 3420 if (focused != null) { 3421 View v = focused.focusSearch(direction); 3422 if (v != null && v != focused) { 3423 // do the math the get the interesting rect 3424 // of previous focused into the coord system of 3425 // newly focused view 3426 focused.getFocusedRect(mTempRect); 3427 if (mView instanceof ViewGroup) { 3428 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 3429 focused, mTempRect); 3430 ((ViewGroup) mView).offsetRectIntoDescendantCoords( 3431 v, mTempRect); 3432 } 3433 if (v.requestFocus(direction, mTempRect)) { 3434 playSoundEffect( 3435 SoundEffectConstants.getContantForFocusDirection(direction)); 3436 finishInputEvent(q, true); 3437 return; 3438 } 3439 } 3440 3441 // Give the focused view a last chance to handle the dpad key. 3442 if (mView.dispatchUnhandledMove(focused, direction)) { 3443 finishInputEvent(q, true); 3444 return; 3445 } 3446 } 3447 } 3448 } 3449 3450 // Key was unhandled. 3451 finishInputEvent(q, false); 3452 } 3453 3454 /* drag/drop */ 3455 void setLocalDragState(Object obj) { 3456 mLocalDragState = obj; 3457 } 3458 3459 private void handleDragEvent(DragEvent event) { 3460 // From the root, only drag start/end/location are dispatched. entered/exited 3461 // are determined and dispatched by the viewgroup hierarchy, who then report 3462 // that back here for ultimate reporting back to the framework. 3463 if (mView != null && mAdded) { 3464 final int what = event.mAction; 3465 3466 if (what == DragEvent.ACTION_DRAG_EXITED) { 3467 // A direct EXITED event means that the window manager knows we've just crossed 3468 // a window boundary, so the current drag target within this one must have 3469 // just been exited. Send it the usual notifications and then we're done 3470 // for now. 3471 mView.dispatchDragEvent(event); 3472 } else { 3473 // Cache the drag description when the operation starts, then fill it in 3474 // on subsequent calls as a convenience 3475 if (what == DragEvent.ACTION_DRAG_STARTED) { 3476 mCurrentDragView = null; // Start the current-recipient tracking 3477 mDragDescription = event.mClipDescription; 3478 } else { 3479 event.mClipDescription = mDragDescription; 3480 } 3481 3482 // For events with a [screen] location, translate into window coordinates 3483 if ((what == DragEvent.ACTION_DRAG_LOCATION) || (what == DragEvent.ACTION_DROP)) { 3484 mDragPoint.set(event.mX, event.mY); 3485 if (mTranslator != null) { 3486 mTranslator.translatePointInScreenToAppWindow(mDragPoint); 3487 } 3488 3489 if (mCurScrollY != 0) { 3490 mDragPoint.offset(0, mCurScrollY); 3491 } 3492 3493 event.mX = mDragPoint.x; 3494 event.mY = mDragPoint.y; 3495 } 3496 3497 // Remember who the current drag target is pre-dispatch 3498 final View prevDragView = mCurrentDragView; 3499 3500 // Now dispatch the drag/drop event 3501 boolean result = mView.dispatchDragEvent(event); 3502 3503 // If we changed apparent drag target, tell the OS about it 3504 if (prevDragView != mCurrentDragView) { 3505 try { 3506 if (prevDragView != null) { 3507 sWindowSession.dragRecipientExited(mWindow); 3508 } 3509 if (mCurrentDragView != null) { 3510 sWindowSession.dragRecipientEntered(mWindow); 3511 } 3512 } catch (RemoteException e) { 3513 Slog.e(TAG, "Unable to note drag target change"); 3514 } 3515 } 3516 3517 // Report the drop result when we're done 3518 if (what == DragEvent.ACTION_DROP) { 3519 mDragDescription = null; 3520 try { 3521 Log.i(TAG, "Reporting drop result: " + result); 3522 sWindowSession.reportDropResult(mWindow, result); 3523 } catch (RemoteException e) { 3524 Log.e(TAG, "Unable to report drop result"); 3525 } 3526 } 3527 3528 // When the drag operation ends, release any local state object 3529 // that may have been in use 3530 if (what == DragEvent.ACTION_DRAG_ENDED) { 3531 setLocalDragState(null); 3532 } 3533 } 3534 } 3535 event.recycle(); 3536 } 3537 3538 public void handleDispatchSystemUiVisibilityChanged(SystemUiVisibilityInfo args) { 3539 if (mSeq != args.seq) { 3540 // The sequence has changed, so we need to update our value and make 3541 // sure to do a traversal afterward so the window manager is given our 3542 // most recent data. 3543 mSeq = args.seq; 3544 mAttachInfo.mForceReportNewAttributes = true; 3545 scheduleTraversals(); 3546 } 3547 if (mView == null) return; 3548 if (args.localChanges != 0) { 3549 if (mAttachInfo != null) { 3550 mAttachInfo.mSystemUiVisibility = 3551 (mAttachInfo.mSystemUiVisibility & ~args.localChanges) | 3552 (args.localValue & args.localChanges); 3553 mAttachInfo.mRecomputeGlobalAttributes = true; 3554 } 3555 mView.updateLocalSystemUiVisibility(args.localValue, args.localChanges); 3556 scheduleTraversals(); 3557 } 3558 mView.dispatchSystemUiVisibilityChanged(args.globalVisibility); 3559 } 3560 3561 public void getLastTouchPoint(Point outLocation) { 3562 outLocation.x = (int) mLastTouchPoint.x; 3563 outLocation.y = (int) mLastTouchPoint.y; 3564 } 3565 3566 public void setDragFocus(View newDragTarget) { 3567 if (mCurrentDragView != newDragTarget) { 3568 mCurrentDragView = newDragTarget; 3569 } 3570 } 3571 3572 private AudioManager getAudioManager() { 3573 if (mView == null) { 3574 throw new IllegalStateException("getAudioManager called when there is no mView"); 3575 } 3576 if (mAudioManager == null) { 3577 mAudioManager = (AudioManager) mView.getContext().getSystemService(Context.AUDIO_SERVICE); 3578 } 3579 return mAudioManager; 3580 } 3581 3582 public AccessibilityInteractionController getAccessibilityInteractionController() { 3583 if (mView == null) { 3584 throw new IllegalStateException("getAccessibilityInteractionController" 3585 + " called when there is no mView"); 3586 } 3587 if (mAccessibilityInteractionController == null) { 3588 mAccessibilityInteractionController = new AccessibilityInteractionController(); 3589 } 3590 return mAccessibilityInteractionController; 3591 } 3592 3593 public AccessibilityNodePrefetcher getAccessibilityNodePrefetcher() { 3594 if (mView == null) { 3595 throw new IllegalStateException("getAccessibilityNodePrefetcher" 3596 + " called when there is no mView"); 3597 } 3598 if (mAccessibilityNodePrefetcher == null) { 3599 mAccessibilityNodePrefetcher = new AccessibilityNodePrefetcher(); 3600 } 3601 return mAccessibilityNodePrefetcher; 3602 } 3603 3604 private int relayoutWindow(WindowManager.LayoutParams params, int viewVisibility, 3605 boolean insetsPending) throws RemoteException { 3606 3607 float appScale = mAttachInfo.mApplicationScale; 3608 boolean restore = false; 3609 if (params != null && mTranslator != null) { 3610 restore = true; 3611 params.backup(); 3612 mTranslator.translateWindowLayout(params); 3613 } 3614 if (params != null) { 3615 if (DBG) Log.d(TAG, "WindowLayout in layoutWindow:" + params); 3616 } 3617 mPendingConfiguration.seq = 0; 3618 //Log.d(TAG, ">>>>>> CALLING relayout"); 3619 if (params != null && mOrigWindowType != params.type) { 3620 // For compatibility with old apps, don't crash here. 3621 if (mTargetSdkVersion < android.os.Build.VERSION_CODES.ICE_CREAM_SANDWICH) { 3622 Slog.w(TAG, "Window type can not be changed after " 3623 + "the window is added; ignoring change of " + mView); 3624 params.type = mOrigWindowType; 3625 } 3626 } 3627 int relayoutResult = sWindowSession.relayout( 3628 mWindow, mSeq, params, 3629 (int) (mView.getMeasuredWidth() * appScale + 0.5f), 3630 (int) (mView.getMeasuredHeight() * appScale + 0.5f), 3631 viewVisibility, insetsPending ? WindowManagerImpl.RELAYOUT_INSETS_PENDING : 0, 3632 mWinFrame, mPendingContentInsets, mPendingVisibleInsets, 3633 mPendingConfiguration, mSurface); 3634 //Log.d(TAG, "<<<<<< BACK FROM relayout"); 3635 if (restore) { 3636 params.restore(); 3637 } 3638 3639 if (mTranslator != null) { 3640 mTranslator.translateRectInScreenToAppWinFrame(mWinFrame); 3641 mTranslator.translateRectInScreenToAppWindow(mPendingContentInsets); 3642 mTranslator.translateRectInScreenToAppWindow(mPendingVisibleInsets); 3643 } 3644 return relayoutResult; 3645 } 3646 3647 /** 3648 * {@inheritDoc} 3649 */ 3650 public void playSoundEffect(int effectId) { 3651 checkThread(); 3652 3653 try { 3654 final AudioManager audioManager = getAudioManager(); 3655 3656 switch (effectId) { 3657 case SoundEffectConstants.CLICK: 3658 audioManager.playSoundEffect(AudioManager.FX_KEY_CLICK); 3659 return; 3660 case SoundEffectConstants.NAVIGATION_DOWN: 3661 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_DOWN); 3662 return; 3663 case SoundEffectConstants.NAVIGATION_LEFT: 3664 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_LEFT); 3665 return; 3666 case SoundEffectConstants.NAVIGATION_RIGHT: 3667 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_RIGHT); 3668 return; 3669 case SoundEffectConstants.NAVIGATION_UP: 3670 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_UP); 3671 return; 3672 default: 3673 throw new IllegalArgumentException("unknown effect id " + effectId + 3674 " not defined in " + SoundEffectConstants.class.getCanonicalName()); 3675 } 3676 } catch (IllegalStateException e) { 3677 // Exception thrown by getAudioManager() when mView is null 3678 Log.e(TAG, "FATAL EXCEPTION when attempting to play sound effect: " + e); 3679 e.printStackTrace(); 3680 } 3681 } 3682 3683 /** 3684 * {@inheritDoc} 3685 */ 3686 public boolean performHapticFeedback(int effectId, boolean always) { 3687 try { 3688 return sWindowSession.performHapticFeedback(mWindow, effectId, always); 3689 } catch (RemoteException e) { 3690 return false; 3691 } 3692 } 3693 3694 /** 3695 * {@inheritDoc} 3696 */ 3697 public View focusSearch(View focused, int direction) { 3698 checkThread(); 3699 if (!(mView instanceof ViewGroup)) { 3700 return null; 3701 } 3702 return FocusFinder.getInstance().findNextFocus((ViewGroup) mView, focused, direction); 3703 } 3704 3705 public void debug() { 3706 mView.debug(); 3707 } 3708 3709 public void dumpGfxInfo(int[] info) { 3710 if (mView != null) { 3711 getGfxInfo(mView, info); 3712 } else { 3713 info[0] = info[1] = 0; 3714 } 3715 } 3716 3717 private void getGfxInfo(View view, int[] info) { 3718 DisplayList displayList = view.mDisplayList; 3719 info[0]++; 3720 if (displayList != null) { 3721 info[1] += displayList.getSize(); 3722 } 3723 3724 if (view instanceof ViewGroup) { 3725 ViewGroup group = (ViewGroup) view; 3726 3727 int count = group.getChildCount(); 3728 for (int i = 0; i < count; i++) { 3729 getGfxInfo(group.getChildAt(i), info); 3730 } 3731 } 3732 } 3733 3734 public void die(boolean immediate) { 3735 if (immediate) { 3736 doDie(); 3737 } else { 3738 mHandler.sendEmptyMessage(MSG_DIE); 3739 } 3740 } 3741 3742 void doDie() { 3743 checkThread(); 3744 if (LOCAL_LOGV) Log.v(TAG, "DIE in " + this + " of " + mSurface); 3745 synchronized (this) { 3746 if (mAdded) { 3747 mAdded = false; 3748 dispatchDetachedFromWindow(); 3749 } 3750 3751 if (mAdded && !mFirst) { 3752 destroyHardwareRenderer(); 3753 3754 int viewVisibility = mView.getVisibility(); 3755 boolean viewVisibilityChanged = mViewVisibility != viewVisibility; 3756 if (mWindowAttributesChanged || viewVisibilityChanged) { 3757 // If layout params have been changed, first give them 3758 // to the window manager to make sure it has the correct 3759 // animation info. 3760 try { 3761 if ((relayoutWindow(mWindowAttributes, viewVisibility, false) 3762 & WindowManagerImpl.RELAYOUT_RES_FIRST_TIME) != 0) { 3763 sWindowSession.finishDrawing(mWindow); 3764 } 3765 } catch (RemoteException e) { 3766 } 3767 } 3768 3769 mSurface.release(); 3770 } 3771 } 3772 } 3773 3774 public void requestUpdateConfiguration(Configuration config) { 3775 Message msg = mHandler.obtainMessage(MSG_UPDATE_CONFIGURATION, config); 3776 mHandler.sendMessage(msg); 3777 } 3778 3779 private void destroyHardwareRenderer() { 3780 if (mAttachInfo.mHardwareRenderer != null) { 3781 mAttachInfo.mHardwareRenderer.destroy(true); 3782 mAttachInfo.mHardwareRenderer = null; 3783 mAttachInfo.mHardwareAccelerated = false; 3784 } 3785 } 3786 3787 void dispatchImeFinishedEvent(int seq, boolean handled) { 3788 Message msg = mHandler.obtainMessage(MSG_IME_FINISHED_EVENT); 3789 msg.arg1 = seq; 3790 msg.arg2 = handled ? 1 : 0; 3791 mHandler.sendMessage(msg); 3792 } 3793 3794 public void dispatchFinishInputConnection(InputConnection connection) { 3795 Message msg = mHandler.obtainMessage(MSG_FINISH_INPUT_CONNECTION, connection); 3796 mHandler.sendMessage(msg); 3797 } 3798 3799 public void dispatchResized(int w, int h, Rect coveredInsets, 3800 Rect visibleInsets, boolean reportDraw, Configuration newConfig) { 3801 if (DEBUG_LAYOUT) Log.v(TAG, "Resizing " + this + ": w=" + w 3802 + " h=" + h + " coveredInsets=" + coveredInsets.toShortString() 3803 + " visibleInsets=" + visibleInsets.toShortString() 3804 + " reportDraw=" + reportDraw); 3805 Message msg = mHandler.obtainMessage(reportDraw ? MSG_RESIZED_REPORT :MSG_RESIZED); 3806 if (mTranslator != null) { 3807 mTranslator.translateRectInScreenToAppWindow(coveredInsets); 3808 mTranslator.translateRectInScreenToAppWindow(visibleInsets); 3809 w *= mTranslator.applicationInvertedScale; 3810 h *= mTranslator.applicationInvertedScale; 3811 } 3812 msg.arg1 = w; 3813 msg.arg2 = h; 3814 ResizedInfo ri = new ResizedInfo(); 3815 ri.coveredInsets = new Rect(coveredInsets); 3816 ri.visibleInsets = new Rect(visibleInsets); 3817 ri.newConfig = newConfig; 3818 msg.obj = ri; 3819 mHandler.sendMessage(msg); 3820 } 3821 3822 /** 3823 * Represents a pending input event that is waiting in a queue. 3824 * 3825 * Input events are processed in serial order by the timestamp specified by 3826 * {@link InputEvent#getEventTimeNano()}. In general, the input dispatcher delivers 3827 * one input event to the application at a time and waits for the application 3828 * to finish handling it before delivering the next one. 3829 * 3830 * However, because the application or IME can synthesize and inject multiple 3831 * key events at a time without going through the input dispatcher, we end up 3832 * needing a queue on the application's side. 3833 */ 3834 private static final class QueuedInputEvent { 3835 public static final int FLAG_DELIVER_POST_IME = 1; 3836 3837 public QueuedInputEvent mNext; 3838 3839 public InputEvent mEvent; 3840 public InputEventReceiver mReceiver; 3841 public int mFlags; 3842 3843 // Used for latency calculations. 3844 public long mReceiveTimeNanos; 3845 public long mDeliverTimeNanos; 3846 public long mDeliverPostImeTimeNanos; 3847 } 3848 3849 private QueuedInputEvent obtainQueuedInputEvent(InputEvent event, 3850 InputEventReceiver receiver, int flags) { 3851 QueuedInputEvent q = mQueuedInputEventPool; 3852 if (q != null) { 3853 mQueuedInputEventPoolSize -= 1; 3854 mQueuedInputEventPool = q.mNext; 3855 q.mNext = null; 3856 } else { 3857 q = new QueuedInputEvent(); 3858 } 3859 3860 q.mEvent = event; 3861 q.mReceiver = receiver; 3862 q.mFlags = flags; 3863 return q; 3864 } 3865 3866 private void recycleQueuedInputEvent(QueuedInputEvent q) { 3867 q.mEvent = null; 3868 q.mReceiver = null; 3869 3870 if (mQueuedInputEventPoolSize < MAX_QUEUED_INPUT_EVENT_POOL_SIZE) { 3871 mQueuedInputEventPoolSize += 1; 3872 q.mNext = mQueuedInputEventPool; 3873 mQueuedInputEventPool = q; 3874 } 3875 } 3876 3877 void enqueueInputEvent(InputEvent event) { 3878 enqueueInputEvent(event, null, 0, false); 3879 } 3880 3881 void enqueueInputEvent(InputEvent event, 3882 InputEventReceiver receiver, int flags, boolean processImmediately) { 3883 QueuedInputEvent q = obtainQueuedInputEvent(event, receiver, flags); 3884 3885 if (ViewDebug.DEBUG_LATENCY) { 3886 q.mReceiveTimeNanos = System.nanoTime(); 3887 q.mDeliverTimeNanos = 0; 3888 q.mDeliverPostImeTimeNanos = 0; 3889 } 3890 3891 // Always enqueue the input event in order, regardless of its time stamp. 3892 // We do this because the application or the IME may inject key events 3893 // in response to touch events and we want to ensure that the injected keys 3894 // are processed in the order they were received and we cannot trust that 3895 // the time stamp of injected events are monotonic. 3896 QueuedInputEvent last = mFirstPendingInputEvent; 3897 if (last == null) { 3898 mFirstPendingInputEvent = q; 3899 } else { 3900 while (last.mNext != null) { 3901 last = last.mNext; 3902 } 3903 last.mNext = q; 3904 } 3905 3906 if (processImmediately) { 3907 doProcessInputEvents(); 3908 } else { 3909 scheduleProcessInputEvents(); 3910 } 3911 } 3912 3913 private void scheduleProcessInputEvents() { 3914 if (!mProcessInputEventsScheduled) { 3915 mProcessInputEventsScheduled = true; 3916 mHandler.sendEmptyMessage(MSG_PROCESS_INPUT_EVENTS); 3917 } 3918 } 3919 3920 private void doProcessInputEvents() { 3921 while (mCurrentInputEvent == null && mFirstPendingInputEvent != null) { 3922 QueuedInputEvent q = mFirstPendingInputEvent; 3923 mFirstPendingInputEvent = q.mNext; 3924 q.mNext = null; 3925 mCurrentInputEvent = q; 3926 deliverInputEvent(q); 3927 } 3928 3929 // We are done processing all input events that we can process right now 3930 // so we can clear the pending flag immediately. 3931 if (mProcessInputEventsScheduled) { 3932 mProcessInputEventsScheduled = false; 3933 mHandler.removeMessages(MSG_PROCESS_INPUT_EVENTS); 3934 } 3935 } 3936 3937 private void finishInputEvent(QueuedInputEvent q, boolean handled) { 3938 if (q != mCurrentInputEvent) { 3939 throw new IllegalStateException("finished input event out of order"); 3940 } 3941 3942 if (ViewDebug.DEBUG_LATENCY) { 3943 final long now = System.nanoTime(); 3944 final long eventTime = q.mEvent.getEventTimeNano(); 3945 final StringBuilder msg = new StringBuilder(); 3946 msg.append("Spent "); 3947 msg.append((now - q.mReceiveTimeNanos) * 0.000001f); 3948 msg.append("ms processing "); 3949 if (q.mEvent instanceof KeyEvent) { 3950 final KeyEvent keyEvent = (KeyEvent)q.mEvent; 3951 msg.append("key event, action="); 3952 msg.append(KeyEvent.actionToString(keyEvent.getAction())); 3953 } else { 3954 final MotionEvent motionEvent = (MotionEvent)q.mEvent; 3955 msg.append("motion event, action="); 3956 msg.append(MotionEvent.actionToString(motionEvent.getAction())); 3957 msg.append(", historySize="); 3958 msg.append(motionEvent.getHistorySize()); 3959 } 3960 msg.append(", handled="); 3961 msg.append(handled); 3962 msg.append(", received at +"); 3963 msg.append((q.mReceiveTimeNanos - eventTime) * 0.000001f); 3964 if (q.mDeliverTimeNanos != 0) { 3965 msg.append("ms, delivered at +"); 3966 msg.append((q.mDeliverTimeNanos - eventTime) * 0.000001f); 3967 } 3968 if (q.mDeliverPostImeTimeNanos != 0) { 3969 msg.append("ms, delivered post IME at +"); 3970 msg.append((q.mDeliverPostImeTimeNanos - eventTime) * 0.000001f); 3971 } 3972 msg.append("ms, finished at +"); 3973 msg.append((now - eventTime) * 0.000001f); 3974 msg.append("ms."); 3975 Log.d(ViewDebug.DEBUG_LATENCY_TAG, msg.toString()); 3976 } 3977 3978 if (q.mReceiver != null) { 3979 q.mReceiver.finishInputEvent(q.mEvent, handled); 3980 } else { 3981 q.mEvent.recycleIfNeededAfterDispatch(); 3982 } 3983 3984 recycleQueuedInputEvent(q); 3985 3986 mCurrentInputEvent = null; 3987 if (mFirstPendingInputEvent != null) { 3988 scheduleProcessInputEvents(); 3989 } 3990 } 3991 3992 final class FrameRunnable implements Runnable { 3993 @Override 3994 public void run() { 3995 mFrameScheduled = false; 3996 doFrame(); 3997 } 3998 } 3999 final FrameRunnable mFrameRunnable = new FrameRunnable(); 4000 boolean mFrameScheduled; 4001 4002 final class WindowInputEventReceiver extends InputEventReceiver { 4003 public WindowInputEventReceiver(InputChannel inputChannel, Looper looper) { 4004 super(inputChannel, looper); 4005 } 4006 4007 @Override 4008 public void onInputEvent(InputEvent event) { 4009 enqueueInputEvent(event, this, 0, true); 4010 } 4011 4012 @Override 4013 public void onBatchedInputEventPending() { 4014 scheduleFrame(); 4015 } 4016 } 4017 WindowInputEventReceiver mInputEventReceiver; 4018 4019 final class InvalidateOnAnimationRunnable implements Runnable { 4020 private boolean mPosted; 4021 private ArrayList<View> mViews = new ArrayList<View>(); 4022 private ArrayList<AttachInfo.InvalidateInfo> mViewRects = 4023 new ArrayList<AttachInfo.InvalidateInfo>(); 4024 private View[] mTempViews; 4025 private AttachInfo.InvalidateInfo[] mTempViewRects; 4026 4027 public void addView(View view) { 4028 synchronized (this) { 4029 mViews.add(view); 4030 postIfNeededLocked(); 4031 } 4032 } 4033 4034 public void addViewRect(AttachInfo.InvalidateInfo info) { 4035 synchronized (this) { 4036 mViewRects.add(info); 4037 postIfNeededLocked(); 4038 } 4039 } 4040 4041 public void removeView(View view) { 4042 synchronized (this) { 4043 mViews.remove(view); 4044 4045 for (int i = mViewRects.size(); i-- > 0; ) { 4046 AttachInfo.InvalidateInfo info = mViewRects.get(i); 4047 if (info.target == view) { 4048 mViewRects.remove(i); 4049 info.release(); 4050 } 4051 } 4052 4053 if (mPosted && mViews.isEmpty() && mViewRects.isEmpty()) { 4054 mChoreographer.removeAnimationCallbacks(this, null); 4055 mPosted = false; 4056 } 4057 } 4058 } 4059 4060 @Override 4061 public void run() { 4062 final int viewCount; 4063 final int viewRectCount; 4064 synchronized (this) { 4065 mPosted = false; 4066 4067 viewCount = mViews.size(); 4068 if (viewCount != 0) { 4069 mTempViews = mViews.toArray(mTempViews != null 4070 ? mTempViews : new View[viewCount]); 4071 mViews.clear(); 4072 } 4073 4074 viewRectCount = mViewRects.size(); 4075 if (viewRectCount != 0) { 4076 mTempViewRects = mViewRects.toArray(mTempViewRects != null 4077 ? mTempViewRects : new AttachInfo.InvalidateInfo[viewRectCount]); 4078 mViewRects.clear(); 4079 } 4080 } 4081 4082 for (int i = 0; i < viewCount; i++) { 4083 mTempViews[i].invalidate(); 4084 } 4085 4086 for (int i = 0; i < viewRectCount; i++) { 4087 final View.AttachInfo.InvalidateInfo info = mTempViewRects[i]; 4088 info.target.invalidate(info.left, info.top, info.right, info.bottom); 4089 info.release(); 4090 } 4091 } 4092 4093 private void postIfNeededLocked() { 4094 if (!mPosted) { 4095 mChoreographer.postAnimationCallback(this, null); 4096 mPosted = true; 4097 } 4098 } 4099 } 4100 final InvalidateOnAnimationRunnable mInvalidateOnAnimationRunnable = 4101 new InvalidateOnAnimationRunnable(); 4102 4103 public void dispatchInvalidateDelayed(View view, long delayMilliseconds) { 4104 Message msg = mHandler.obtainMessage(MSG_INVALIDATE, view); 4105 mHandler.sendMessageDelayed(msg, delayMilliseconds); 4106 } 4107 4108 public void dispatchInvalidateRectDelayed(AttachInfo.InvalidateInfo info, 4109 long delayMilliseconds) { 4110 final Message msg = mHandler.obtainMessage(MSG_INVALIDATE_RECT, info); 4111 mHandler.sendMessageDelayed(msg, delayMilliseconds); 4112 } 4113 4114 public void dispatchInvalidateOnAnimation(View view) { 4115 mInvalidateOnAnimationRunnable.addView(view); 4116 } 4117 4118 public void dispatchInvalidateRectOnAnimation(AttachInfo.InvalidateInfo info) { 4119 mInvalidateOnAnimationRunnable.addViewRect(info); 4120 } 4121 4122 public void cancelInvalidate(View view) { 4123 mHandler.removeMessages(MSG_INVALIDATE, view); 4124 // fixme: might leak the AttachInfo.InvalidateInfo objects instead of returning 4125 // them to the pool 4126 mHandler.removeMessages(MSG_INVALIDATE_RECT, view); 4127 mInvalidateOnAnimationRunnable.removeView(view); 4128 } 4129 4130 public void dispatchKey(KeyEvent event) { 4131 Message msg = mHandler.obtainMessage(MSG_DISPATCH_KEY, event); 4132 msg.setAsynchronous(true); 4133 mHandler.sendMessage(msg); 4134 } 4135 4136 public void dispatchKeyFromIme(KeyEvent event) { 4137 Message msg = mHandler.obtainMessage(MSG_DISPATCH_KEY_FROM_IME, event); 4138 msg.setAsynchronous(true); 4139 mHandler.sendMessage(msg); 4140 } 4141 4142 public void dispatchAppVisibility(boolean visible) { 4143 Message msg = mHandler.obtainMessage(MSG_DISPATCH_APP_VISIBILITY); 4144 msg.arg1 = visible ? 1 : 0; 4145 mHandler.sendMessage(msg); 4146 } 4147 4148 public void dispatchScreenStateChange(boolean on) { 4149 Message msg = mHandler.obtainMessage(MSG_DISPATCH_SCREEN_STATE); 4150 msg.arg1 = on ? 1 : 0; 4151 mHandler.sendMessage(msg); 4152 } 4153 4154 public void dispatchGetNewSurface() { 4155 Message msg = mHandler.obtainMessage(MSG_DISPATCH_GET_NEW_SURFACE); 4156 mHandler.sendMessage(msg); 4157 } 4158 4159 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 4160 Message msg = Message.obtain(); 4161 msg.what = MSG_WINDOW_FOCUS_CHANGED; 4162 msg.arg1 = hasFocus ? 1 : 0; 4163 msg.arg2 = inTouchMode ? 1 : 0; 4164 mHandler.sendMessage(msg); 4165 } 4166 4167 public void dispatchCloseSystemDialogs(String reason) { 4168 Message msg = Message.obtain(); 4169 msg.what = MSG_CLOSE_SYSTEM_DIALOGS; 4170 msg.obj = reason; 4171 mHandler.sendMessage(msg); 4172 } 4173 4174 public void dispatchDragEvent(DragEvent event) { 4175 final int what; 4176 if (event.getAction() == DragEvent.ACTION_DRAG_LOCATION) { 4177 what = MSG_DISPATCH_DRAG_LOCATION_EVENT; 4178 mHandler.removeMessages(what); 4179 } else { 4180 what = MSG_DISPATCH_DRAG_EVENT; 4181 } 4182 Message msg = mHandler.obtainMessage(what, event); 4183 mHandler.sendMessage(msg); 4184 } 4185 4186 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 4187 int localValue, int localChanges) { 4188 SystemUiVisibilityInfo args = new SystemUiVisibilityInfo(); 4189 args.seq = seq; 4190 args.globalVisibility = globalVisibility; 4191 args.localValue = localValue; 4192 args.localChanges = localChanges; 4193 mHandler.sendMessage(mHandler.obtainMessage(MSG_DISPATCH_SYSTEM_UI_VISIBILITY, args)); 4194 } 4195 4196 public void dispatchCheckFocus() { 4197 if (!mHandler.hasMessages(MSG_CHECK_FOCUS)) { 4198 // This will result in a call to checkFocus() below. 4199 mHandler.sendEmptyMessage(MSG_CHECK_FOCUS); 4200 } 4201 } 4202 4203 /** 4204 * Post a callback to send a 4205 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 4206 * This event is send at most once every 4207 * {@link ViewConfiguration#getSendRecurringAccessibilityEventsInterval()}. 4208 */ 4209 private void postSendWindowContentChangedCallback() { 4210 if (mSendWindowContentChangedAccessibilityEvent == null) { 4211 mSendWindowContentChangedAccessibilityEvent = 4212 new SendWindowContentChangedAccessibilityEvent(); 4213 } 4214 if (!mSendWindowContentChangedAccessibilityEvent.mIsPending) { 4215 mSendWindowContentChangedAccessibilityEvent.mIsPending = true; 4216 mHandler.postDelayed(mSendWindowContentChangedAccessibilityEvent, 4217 ViewConfiguration.getSendRecurringAccessibilityEventsInterval()); 4218 } 4219 } 4220 4221 /** 4222 * Remove a posted callback to send a 4223 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 4224 */ 4225 private void removeSendWindowContentChangedCallback() { 4226 if (mSendWindowContentChangedAccessibilityEvent != null) { 4227 mHandler.removeCallbacks(mSendWindowContentChangedAccessibilityEvent); 4228 } 4229 } 4230 4231 public boolean showContextMenuForChild(View originalView) { 4232 return false; 4233 } 4234 4235 public ActionMode startActionModeForChild(View originalView, ActionMode.Callback callback) { 4236 return null; 4237 } 4238 4239 public void createContextMenu(ContextMenu menu) { 4240 } 4241 4242 public void childDrawableStateChanged(View child) { 4243 } 4244 4245 public boolean requestSendAccessibilityEvent(View child, AccessibilityEvent event) { 4246 if (mView == null) { 4247 return false; 4248 } 4249 mAccessibilityManager.sendAccessibilityEvent(event); 4250 return true; 4251 } 4252 4253 void checkThread() { 4254 if (mThread != Thread.currentThread()) { 4255 throw new CalledFromWrongThreadException( 4256 "Only the original thread that created a view hierarchy can touch its views."); 4257 } 4258 } 4259 4260 public void requestDisallowInterceptTouchEvent(boolean disallowIntercept) { 4261 // ViewAncestor never intercepts touch event, so this can be a no-op 4262 } 4263 4264 public boolean requestChildRectangleOnScreen(View child, Rect rectangle, 4265 boolean immediate) { 4266 return scrollToRectOrFocus(rectangle, immediate); 4267 } 4268 4269 public void childHasTransientStateChanged(View child, boolean hasTransientState) { 4270 // Do nothing. 4271 } 4272 4273 class TakenSurfaceHolder extends BaseSurfaceHolder { 4274 @Override 4275 public boolean onAllowLockCanvas() { 4276 return mDrawingAllowed; 4277 } 4278 4279 @Override 4280 public void onRelayoutContainer() { 4281 // Not currently interesting -- from changing between fixed and layout size. 4282 } 4283 4284 public void setFormat(int format) { 4285 ((RootViewSurfaceTaker)mView).setSurfaceFormat(format); 4286 } 4287 4288 public void setType(int type) { 4289 ((RootViewSurfaceTaker)mView).setSurfaceType(type); 4290 } 4291 4292 @Override 4293 public void onUpdateSurface() { 4294 // We take care of format and type changes on our own. 4295 throw new IllegalStateException("Shouldn't be here"); 4296 } 4297 4298 public boolean isCreating() { 4299 return mIsCreating; 4300 } 4301 4302 @Override 4303 public void setFixedSize(int width, int height) { 4304 throw new UnsupportedOperationException( 4305 "Currently only support sizing from layout"); 4306 } 4307 4308 public void setKeepScreenOn(boolean screenOn) { 4309 ((RootViewSurfaceTaker)mView).setSurfaceKeepScreenOn(screenOn); 4310 } 4311 } 4312 4313 static class InputMethodCallback extends IInputMethodCallback.Stub { 4314 private WeakReference<ViewRootImpl> mViewAncestor; 4315 4316 public InputMethodCallback(ViewRootImpl viewAncestor) { 4317 mViewAncestor = new WeakReference<ViewRootImpl>(viewAncestor); 4318 } 4319 4320 public void finishedEvent(int seq, boolean handled) { 4321 final ViewRootImpl viewAncestor = mViewAncestor.get(); 4322 if (viewAncestor != null) { 4323 viewAncestor.dispatchImeFinishedEvent(seq, handled); 4324 } 4325 } 4326 4327 public void sessionCreated(IInputMethodSession session) { 4328 // Stub -- not for use in the client. 4329 } 4330 } 4331 4332 static class W extends IWindow.Stub { 4333 private final WeakReference<ViewRootImpl> mViewAncestor; 4334 4335 W(ViewRootImpl viewAncestor) { 4336 mViewAncestor = new WeakReference<ViewRootImpl>(viewAncestor); 4337 } 4338 4339 public void resized(int w, int h, Rect coveredInsets, Rect visibleInsets, 4340 boolean reportDraw, Configuration newConfig) { 4341 final ViewRootImpl viewAncestor = mViewAncestor.get(); 4342 if (viewAncestor != null) { 4343 viewAncestor.dispatchResized(w, h, coveredInsets, visibleInsets, reportDraw, 4344 newConfig); 4345 } 4346 } 4347 4348 public void dispatchAppVisibility(boolean visible) { 4349 final ViewRootImpl viewAncestor = mViewAncestor.get(); 4350 if (viewAncestor != null) { 4351 viewAncestor.dispatchAppVisibility(visible); 4352 } 4353 } 4354 4355 public void dispatchScreenState(boolean on) { 4356 final ViewRootImpl viewAncestor = mViewAncestor.get(); 4357 if (viewAncestor != null) { 4358 viewAncestor.dispatchScreenStateChange(on); 4359 } 4360 } 4361 4362 public void dispatchGetNewSurface() { 4363 final ViewRootImpl viewAncestor = mViewAncestor.get(); 4364 if (viewAncestor != null) { 4365 viewAncestor.dispatchGetNewSurface(); 4366 } 4367 } 4368 4369 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 4370 final ViewRootImpl viewAncestor = mViewAncestor.get(); 4371 if (viewAncestor != null) { 4372 viewAncestor.windowFocusChanged(hasFocus, inTouchMode); 4373 } 4374 } 4375 4376 private static int checkCallingPermission(String permission) { 4377 try { 4378 return ActivityManagerNative.getDefault().checkPermission( 4379 permission, Binder.getCallingPid(), Binder.getCallingUid()); 4380 } catch (RemoteException e) { 4381 return PackageManager.PERMISSION_DENIED; 4382 } 4383 } 4384 4385 public void executeCommand(String command, String parameters, ParcelFileDescriptor out) { 4386 final ViewRootImpl viewAncestor = mViewAncestor.get(); 4387 if (viewAncestor != null) { 4388 final View view = viewAncestor.mView; 4389 if (view != null) { 4390 if (checkCallingPermission(Manifest.permission.DUMP) != 4391 PackageManager.PERMISSION_GRANTED) { 4392 throw new SecurityException("Insufficient permissions to invoke" 4393 + " executeCommand() from pid=" + Binder.getCallingPid() 4394 + ", uid=" + Binder.getCallingUid()); 4395 } 4396 4397 OutputStream clientStream = null; 4398 try { 4399 clientStream = new ParcelFileDescriptor.AutoCloseOutputStream(out); 4400 ViewDebug.dispatchCommand(view, command, parameters, clientStream); 4401 } catch (IOException e) { 4402 e.printStackTrace(); 4403 } finally { 4404 if (clientStream != null) { 4405 try { 4406 clientStream.close(); 4407 } catch (IOException e) { 4408 e.printStackTrace(); 4409 } 4410 } 4411 } 4412 } 4413 } 4414 } 4415 4416 public void closeSystemDialogs(String reason) { 4417 final ViewRootImpl viewAncestor = mViewAncestor.get(); 4418 if (viewAncestor != null) { 4419 viewAncestor.dispatchCloseSystemDialogs(reason); 4420 } 4421 } 4422 4423 public void dispatchWallpaperOffsets(float x, float y, float xStep, float yStep, 4424 boolean sync) { 4425 if (sync) { 4426 try { 4427 sWindowSession.wallpaperOffsetsComplete(asBinder()); 4428 } catch (RemoteException e) { 4429 } 4430 } 4431 } 4432 4433 public void dispatchWallpaperCommand(String action, int x, int y, 4434 int z, Bundle extras, boolean sync) { 4435 if (sync) { 4436 try { 4437 sWindowSession.wallpaperCommandComplete(asBinder(), null); 4438 } catch (RemoteException e) { 4439 } 4440 } 4441 } 4442 4443 /* Drag/drop */ 4444 public void dispatchDragEvent(DragEvent event) { 4445 final ViewRootImpl viewAncestor = mViewAncestor.get(); 4446 if (viewAncestor != null) { 4447 viewAncestor.dispatchDragEvent(event); 4448 } 4449 } 4450 4451 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 4452 int localValue, int localChanges) { 4453 final ViewRootImpl viewAncestor = mViewAncestor.get(); 4454 if (viewAncestor != null) { 4455 viewAncestor.dispatchSystemUiVisibilityChanged(seq, globalVisibility, 4456 localValue, localChanges); 4457 } 4458 } 4459 } 4460 4461 /** 4462 * Maintains state information for a single trackball axis, generating 4463 * discrete (DPAD) movements based on raw trackball motion. 4464 */ 4465 static final class TrackballAxis { 4466 /** 4467 * The maximum amount of acceleration we will apply. 4468 */ 4469 static final float MAX_ACCELERATION = 20; 4470 4471 /** 4472 * The maximum amount of time (in milliseconds) between events in order 4473 * for us to consider the user to be doing fast trackball movements, 4474 * and thus apply an acceleration. 4475 */ 4476 static final long FAST_MOVE_TIME = 150; 4477 4478 /** 4479 * Scaling factor to the time (in milliseconds) between events to how 4480 * much to multiple/divide the current acceleration. When movement 4481 * is < FAST_MOVE_TIME this multiplies the acceleration; when > 4482 * FAST_MOVE_TIME it divides it. 4483 */ 4484 static final float ACCEL_MOVE_SCALING_FACTOR = (1.0f/40); 4485 4486 float position; 4487 float absPosition; 4488 float acceleration = 1; 4489 long lastMoveTime = 0; 4490 int step; 4491 int dir; 4492 int nonAccelMovement; 4493 4494 void reset(int _step) { 4495 position = 0; 4496 acceleration = 1; 4497 lastMoveTime = 0; 4498 step = _step; 4499 dir = 0; 4500 } 4501 4502 /** 4503 * Add trackball movement into the state. If the direction of movement 4504 * has been reversed, the state is reset before adding the 4505 * movement (so that you don't have to compensate for any previously 4506 * collected movement before see the result of the movement in the 4507 * new direction). 4508 * 4509 * @return Returns the absolute value of the amount of movement 4510 * collected so far. 4511 */ 4512 float collect(float off, long time, String axis) { 4513 long normTime; 4514 if (off > 0) { 4515 normTime = (long)(off * FAST_MOVE_TIME); 4516 if (dir < 0) { 4517 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to positive!"); 4518 position = 0; 4519 step = 0; 4520 acceleration = 1; 4521 lastMoveTime = 0; 4522 } 4523 dir = 1; 4524 } else if (off < 0) { 4525 normTime = (long)((-off) * FAST_MOVE_TIME); 4526 if (dir > 0) { 4527 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to negative!"); 4528 position = 0; 4529 step = 0; 4530 acceleration = 1; 4531 lastMoveTime = 0; 4532 } 4533 dir = -1; 4534 } else { 4535 normTime = 0; 4536 } 4537 4538 // The number of milliseconds between each movement that is 4539 // considered "normal" and will not result in any acceleration 4540 // or deceleration, scaled by the offset we have here. 4541 if (normTime > 0) { 4542 long delta = time - lastMoveTime; 4543 lastMoveTime = time; 4544 float acc = acceleration; 4545 if (delta < normTime) { 4546 // The user is scrolling rapidly, so increase acceleration. 4547 float scale = (normTime-delta) * ACCEL_MOVE_SCALING_FACTOR; 4548 if (scale > 1) acc *= scale; 4549 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " accelerate: off=" 4550 + off + " normTime=" + normTime + " delta=" + delta 4551 + " scale=" + scale + " acc=" + acc); 4552 acceleration = acc < MAX_ACCELERATION ? acc : MAX_ACCELERATION; 4553 } else { 4554 // The user is scrolling slowly, so decrease acceleration. 4555 float scale = (delta-normTime) * ACCEL_MOVE_SCALING_FACTOR; 4556 if (scale > 1) acc /= scale; 4557 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " deccelerate: off=" 4558 + off + " normTime=" + normTime + " delta=" + delta 4559 + " scale=" + scale + " acc=" + acc); 4560 acceleration = acc > 1 ? acc : 1; 4561 } 4562 } 4563 position += off; 4564 return (absPosition = Math.abs(position)); 4565 } 4566 4567 /** 4568 * Generate the number of discrete movement events appropriate for 4569 * the currently collected trackball movement. 4570 * 4571 * @param precision The minimum movement required to generate the 4572 * first discrete movement. 4573 * 4574 * @return Returns the number of discrete movements, either positive 4575 * or negative, or 0 if there is not enough trackball movement yet 4576 * for a discrete movement. 4577 */ 4578 int generate(float precision) { 4579 int movement = 0; 4580 nonAccelMovement = 0; 4581 do { 4582 final int dir = position >= 0 ? 1 : -1; 4583 switch (step) { 4584 // If we are going to execute the first step, then we want 4585 // to do this as soon as possible instead of waiting for 4586 // a full movement, in order to make things look responsive. 4587 case 0: 4588 if (absPosition < precision) { 4589 return movement; 4590 } 4591 movement += dir; 4592 nonAccelMovement += dir; 4593 step = 1; 4594 break; 4595 // If we have generated the first movement, then we need 4596 // to wait for the second complete trackball motion before 4597 // generating the second discrete movement. 4598 case 1: 4599 if (absPosition < 2) { 4600 return movement; 4601 } 4602 movement += dir; 4603 nonAccelMovement += dir; 4604 position += dir > 0 ? -2 : 2; 4605 absPosition = Math.abs(position); 4606 step = 2; 4607 break; 4608 // After the first two, we generate discrete movements 4609 // consistently with the trackball, applying an acceleration 4610 // if the trackball is moving quickly. This is a simple 4611 // acceleration on top of what we already compute based 4612 // on how quickly the wheel is being turned, to apply 4613 // a longer increasing acceleration to continuous movement 4614 // in one direction. 4615 default: 4616 if (absPosition < 1) { 4617 return movement; 4618 } 4619 movement += dir; 4620 position += dir >= 0 ? -1 : 1; 4621 absPosition = Math.abs(position); 4622 float acc = acceleration; 4623 acc *= 1.1f; 4624 acceleration = acc < MAX_ACCELERATION ? acc : acceleration; 4625 break; 4626 } 4627 } while (true); 4628 } 4629 } 4630 4631 public static final class CalledFromWrongThreadException extends AndroidRuntimeException { 4632 public CalledFromWrongThreadException(String msg) { 4633 super(msg); 4634 } 4635 } 4636 4637 private SurfaceHolder mHolder = new SurfaceHolder() { 4638 // we only need a SurfaceHolder for opengl. it would be nice 4639 // to implement everything else though, especially the callback 4640 // support (opengl doesn't make use of it right now, but eventually 4641 // will). 4642 public Surface getSurface() { 4643 return mSurface; 4644 } 4645 4646 public boolean isCreating() { 4647 return false; 4648 } 4649 4650 public void addCallback(Callback callback) { 4651 } 4652 4653 public void removeCallback(Callback callback) { 4654 } 4655 4656 public void setFixedSize(int width, int height) { 4657 } 4658 4659 public void setSizeFromLayout() { 4660 } 4661 4662 public void setFormat(int format) { 4663 } 4664 4665 public void setType(int type) { 4666 } 4667 4668 public void setKeepScreenOn(boolean screenOn) { 4669 } 4670 4671 public Canvas lockCanvas() { 4672 return null; 4673 } 4674 4675 public Canvas lockCanvas(Rect dirty) { 4676 return null; 4677 } 4678 4679 public void unlockCanvasAndPost(Canvas canvas) { 4680 } 4681 public Rect getSurfaceFrame() { 4682 return null; 4683 } 4684 }; 4685 4686 static RunQueue getRunQueue() { 4687 RunQueue rq = sRunQueues.get(); 4688 if (rq != null) { 4689 return rq; 4690 } 4691 rq = new RunQueue(); 4692 sRunQueues.set(rq); 4693 return rq; 4694 } 4695 4696 /** 4697 * The run queue is used to enqueue pending work from Views when no Handler is 4698 * attached. The work is executed during the next call to performTraversals on 4699 * the thread. 4700 * @hide 4701 */ 4702 static final class RunQueue { 4703 private final ArrayList<HandlerAction> mActions = new ArrayList<HandlerAction>(); 4704 4705 void post(Runnable action) { 4706 postDelayed(action, 0); 4707 } 4708 4709 void postDelayed(Runnable action, long delayMillis) { 4710 HandlerAction handlerAction = new HandlerAction(); 4711 handlerAction.action = action; 4712 handlerAction.delay = delayMillis; 4713 4714 synchronized (mActions) { 4715 mActions.add(handlerAction); 4716 } 4717 } 4718 4719 void removeCallbacks(Runnable action) { 4720 final HandlerAction handlerAction = new HandlerAction(); 4721 handlerAction.action = action; 4722 4723 synchronized (mActions) { 4724 final ArrayList<HandlerAction> actions = mActions; 4725 4726 while (actions.remove(handlerAction)) { 4727 // Keep going 4728 } 4729 } 4730 } 4731 4732 void executeActions(Handler handler) { 4733 synchronized (mActions) { 4734 final ArrayList<HandlerAction> actions = mActions; 4735 final int count = actions.size(); 4736 4737 for (int i = 0; i < count; i++) { 4738 final HandlerAction handlerAction = actions.get(i); 4739 handler.postDelayed(handlerAction.action, handlerAction.delay); 4740 } 4741 4742 actions.clear(); 4743 } 4744 } 4745 4746 private static class HandlerAction { 4747 Runnable action; 4748 long delay; 4749 4750 @Override 4751 public boolean equals(Object o) { 4752 if (this == o) return true; 4753 if (o == null || getClass() != o.getClass()) return false; 4754 4755 HandlerAction that = (HandlerAction) o; 4756 return !(action != null ? !action.equals(that.action) : that.action != null); 4757 4758 } 4759 4760 @Override 4761 public int hashCode() { 4762 int result = action != null ? action.hashCode() : 0; 4763 result = 31 * result + (int) (delay ^ (delay >>> 32)); 4764 return result; 4765 } 4766 } 4767 } 4768 4769 /** 4770 * Class for managing the accessibility interaction connection 4771 * based on the global accessibility state. 4772 */ 4773 final class AccessibilityInteractionConnectionManager 4774 implements AccessibilityStateChangeListener { 4775 public void onAccessibilityStateChanged(boolean enabled) { 4776 if (enabled) { 4777 ensureConnection(); 4778 if (mAttachInfo != null && mAttachInfo.mHasWindowFocus) { 4779 mView.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 4780 View focusedView = mView.findFocus(); 4781 if (focusedView != null && focusedView != mView) { 4782 focusedView.sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_FOCUSED); 4783 } 4784 } 4785 } else { 4786 ensureNoConnection(); 4787 } 4788 } 4789 4790 public void ensureConnection() { 4791 if (mAttachInfo != null) { 4792 final boolean registered = 4793 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED; 4794 if (!registered) { 4795 mAttachInfo.mAccessibilityWindowId = 4796 mAccessibilityManager.addAccessibilityInteractionConnection(mWindow, 4797 new AccessibilityInteractionConnection(ViewRootImpl.this)); 4798 } 4799 } 4800 } 4801 4802 public void ensureNoConnection() { 4803 final boolean registered = 4804 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED; 4805 if (registered) { 4806 mAttachInfo.mAccessibilityWindowId = AccessibilityNodeInfo.UNDEFINED; 4807 mAccessibilityManager.removeAccessibilityInteractionConnection(mWindow); 4808 } 4809 } 4810 } 4811 4812 /** 4813 * This class is an interface this ViewAncestor provides to the 4814 * AccessibilityManagerService to the latter can interact with 4815 * the view hierarchy in this ViewAncestor. 4816 */ 4817 static final class AccessibilityInteractionConnection 4818 extends IAccessibilityInteractionConnection.Stub { 4819 private final WeakReference<ViewRootImpl> mViewRootImpl; 4820 4821 AccessibilityInteractionConnection(ViewRootImpl viewRootImpl) { 4822 mViewRootImpl = new WeakReference<ViewRootImpl>(viewRootImpl); 4823 } 4824 4825 public void findAccessibilityNodeInfoByAccessibilityId(long accessibilityNodeId, 4826 int interactionId, IAccessibilityInteractionConnectionCallback callback, 4827 int prefetchFlags, int interrogatingPid, long interrogatingTid) { 4828 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 4829 if (viewRootImpl != null && viewRootImpl.mView != null) { 4830 viewRootImpl.getAccessibilityInteractionController() 4831 .findAccessibilityNodeInfoByAccessibilityIdClientThread(accessibilityNodeId, 4832 interactionId, callback, prefetchFlags, interrogatingPid, interrogatingTid); 4833 } else { 4834 // We cannot make the call and notify the caller so it does not wait. 4835 try { 4836 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 4837 } catch (RemoteException re) { 4838 /* best effort - ignore */ 4839 } 4840 } 4841 } 4842 4843 public void performAccessibilityAction(long accessibilityNodeId, int action, 4844 int interactionId, IAccessibilityInteractionConnectionCallback callback, 4845 int interogatingPid, long interrogatingTid) { 4846 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 4847 if (viewRootImpl != null && viewRootImpl.mView != null) { 4848 viewRootImpl.getAccessibilityInteractionController() 4849 .performAccessibilityActionClientThread(accessibilityNodeId, action, 4850 interactionId, callback, interogatingPid, interrogatingTid); 4851 } else { 4852 // We cannot make the call and notify the caller so it does not 4853 try { 4854 callback.setPerformAccessibilityActionResult(false, interactionId); 4855 } catch (RemoteException re) { 4856 /* best effort - ignore */ 4857 } 4858 } 4859 } 4860 4861 public void findAccessibilityNodeInfoByViewId(long accessibilityNodeId, int viewId, 4862 int interactionId, IAccessibilityInteractionConnectionCallback callback, 4863 int interrogatingPid, long interrogatingTid) { 4864 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 4865 if (viewRootImpl != null && viewRootImpl.mView != null) { 4866 viewRootImpl.getAccessibilityInteractionController() 4867 .findAccessibilityNodeInfoByViewIdClientThread(accessibilityNodeId, viewId, 4868 interactionId, callback, interrogatingPid, interrogatingTid); 4869 } else { 4870 // We cannot make the call and notify the caller so it does not 4871 try { 4872 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 4873 } catch (RemoteException re) { 4874 /* best effort - ignore */ 4875 } 4876 } 4877 } 4878 4879 public void findAccessibilityNodeInfosByText(long accessibilityNodeId, String text, 4880 int interactionId, IAccessibilityInteractionConnectionCallback callback, 4881 int interrogatingPid, long interrogatingTid) { 4882 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 4883 if (viewRootImpl != null && viewRootImpl.mView != null) { 4884 viewRootImpl.getAccessibilityInteractionController() 4885 .findAccessibilityNodeInfosByTextClientThread(accessibilityNodeId, text, 4886 interactionId, callback, interrogatingPid, interrogatingTid); 4887 } else { 4888 // We cannot make the call and notify the caller so it does not 4889 try { 4890 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 4891 } catch (RemoteException re) { 4892 /* best effort - ignore */ 4893 } 4894 } 4895 } 4896 } 4897 4898 /** 4899 * Class for managing accessibility interactions initiated from the system 4900 * and targeting the view hierarchy. A *ClientThread method is to be 4901 * called from the interaction connection this ViewAncestor gives the 4902 * system to talk to it and a corresponding *UiThread method that is executed 4903 * on the UI thread. 4904 */ 4905 final class AccessibilityInteractionController { 4906 private static final int POOL_SIZE = 5; 4907 4908 private ArrayList<AccessibilityNodeInfo> mTempAccessibilityNodeInfoList = 4909 new ArrayList<AccessibilityNodeInfo>(); 4910 4911 // Reusable poolable arguments for interacting with the view hierarchy 4912 // to fit more arguments than Message and to avoid sharing objects between 4913 // two messages since several threads can send messages concurrently. 4914 private final Pool<SomeArgs> mPool = Pools.synchronizedPool(Pools.finitePool( 4915 new PoolableManager<SomeArgs>() { 4916 public SomeArgs newInstance() { 4917 return new SomeArgs(); 4918 } 4919 4920 public void onAcquired(SomeArgs info) { 4921 /* do nothing */ 4922 } 4923 4924 public void onReleased(SomeArgs info) { 4925 info.clear(); 4926 } 4927 }, POOL_SIZE) 4928 ); 4929 4930 public class SomeArgs implements Poolable<SomeArgs> { 4931 private SomeArgs mNext; 4932 private boolean mIsPooled; 4933 4934 public Object arg1; 4935 public Object arg2; 4936 public int argi1; 4937 public int argi2; 4938 public int argi3; 4939 4940 public SomeArgs getNextPoolable() { 4941 return mNext; 4942 } 4943 4944 public boolean isPooled() { 4945 return mIsPooled; 4946 } 4947 4948 public void setNextPoolable(SomeArgs args) { 4949 mNext = args; 4950 } 4951 4952 public void setPooled(boolean isPooled) { 4953 mIsPooled = isPooled; 4954 } 4955 4956 private void clear() { 4957 arg1 = null; 4958 arg2 = null; 4959 argi1 = 0; 4960 argi2 = 0; 4961 argi3 = 0; 4962 } 4963 } 4964 4965 public void findAccessibilityNodeInfoByAccessibilityIdClientThread( 4966 long accessibilityNodeId, int interactionId, 4967 IAccessibilityInteractionConnectionCallback callback, int prefetchFlags, 4968 int interrogatingPid, long interrogatingTid) { 4969 Message message = mHandler.obtainMessage(); 4970 message.what = MSG_FIND_ACCESSIBLITY_NODE_INFO_BY_ACCESSIBILITY_ID; 4971 message.arg1 = prefetchFlags; 4972 SomeArgs args = mPool.acquire(); 4973 args.argi1 = AccessibilityNodeInfo.getAccessibilityViewId(accessibilityNodeId); 4974 args.argi2 = AccessibilityNodeInfo.getVirtualDescendantId(accessibilityNodeId); 4975 args.argi3 = interactionId; 4976 args.arg1 = callback; 4977 message.obj = args; 4978 // If the interrogation is performed by the same thread as the main UI 4979 // thread in this process, set the message as a static reference so 4980 // after this call completes the same thread but in the interrogating 4981 // client can handle the message to generate the result. 4982 if (interrogatingPid == Process.myPid() 4983 && interrogatingTid == Looper.getMainLooper().getThread().getId()) { 4984 AccessibilityInteractionClient.getInstanceForThread( 4985 interrogatingTid).setSameThreadMessage(message); 4986 } else { 4987 mHandler.sendMessage(message); 4988 } 4989 } 4990 4991 public void findAccessibilityNodeInfoByAccessibilityIdUiThread(Message message) { 4992 final int prefetchFlags = message.arg1; 4993 SomeArgs args = (SomeArgs) message.obj; 4994 final int accessibilityViewId = args.argi1; 4995 final int virtualDescendantId = args.argi2; 4996 final int interactionId = args.argi3; 4997 final IAccessibilityInteractionConnectionCallback callback = 4998 (IAccessibilityInteractionConnectionCallback) args.arg1; 4999 mPool.release(args); 5000 List<AccessibilityNodeInfo> infos = mTempAccessibilityNodeInfoList; 5001 infos.clear(); 5002 try { 5003 View target = null; 5004 if (accessibilityViewId == AccessibilityNodeInfo.UNDEFINED) { 5005 target = ViewRootImpl.this.mView; 5006 } else { 5007 target = findViewByAccessibilityId(accessibilityViewId); 5008 } 5009 if (target != null && target.getVisibility() == View.VISIBLE) { 5010 getAccessibilityNodePrefetcher().prefetchAccessibilityNodeInfos(target, 5011 virtualDescendantId, prefetchFlags, infos); 5012 } 5013 } finally { 5014 try { 5015 callback.setFindAccessibilityNodeInfosResult(infos, interactionId); 5016 infos.clear(); 5017 } catch (RemoteException re) { 5018 /* ignore - the other side will time out */ 5019 } 5020 } 5021 } 5022 5023 public void findAccessibilityNodeInfoByViewIdClientThread(long accessibilityNodeId, 5024 int viewId, int interactionId, IAccessibilityInteractionConnectionCallback callback, 5025 int interrogatingPid, long interrogatingTid) { 5026 Message message = mHandler.obtainMessage(); 5027 message.what = MSG_FIND_ACCESSIBLITY_NODE_INFO_BY_VIEW_ID; 5028 message.arg1 = AccessibilityNodeInfo.getAccessibilityViewId(accessibilityNodeId); 5029 SomeArgs args = mPool.acquire(); 5030 args.argi1 = viewId; 5031 args.argi2 = interactionId; 5032 args.arg1 = callback; 5033 message.obj = args; 5034 // If the interrogation is performed by the same thread as the main UI 5035 // thread in this process, set the message as a static reference so 5036 // after this call completes the same thread but in the interrogating 5037 // client can handle the message to generate the result. 5038 if (interrogatingPid == Process.myPid() 5039 && interrogatingTid == Looper.getMainLooper().getThread().getId()) { 5040 AccessibilityInteractionClient.getInstanceForThread( 5041 interrogatingTid).setSameThreadMessage(message); 5042 } else { 5043 mHandler.sendMessage(message); 5044 } 5045 } 5046 5047 public void findAccessibilityNodeInfoByViewIdUiThread(Message message) { 5048 final int accessibilityViewId = message.arg1; 5049 SomeArgs args = (SomeArgs) message.obj; 5050 final int viewId = args.argi1; 5051 final int interactionId = args.argi2; 5052 final IAccessibilityInteractionConnectionCallback callback = 5053 (IAccessibilityInteractionConnectionCallback) args.arg1; 5054 mPool.release(args); 5055 AccessibilityNodeInfo info = null; 5056 try { 5057 View root = null; 5058 if (accessibilityViewId != AccessibilityNodeInfo.UNDEFINED) { 5059 root = findViewByAccessibilityId(accessibilityViewId); 5060 } else { 5061 root = ViewRootImpl.this.mView; 5062 } 5063 if (root != null) { 5064 View target = root.findViewById(viewId); 5065 if (target != null && target.getVisibility() == View.VISIBLE) { 5066 info = target.createAccessibilityNodeInfo(); 5067 } 5068 } 5069 } finally { 5070 try { 5071 callback.setFindAccessibilityNodeInfoResult(info, interactionId); 5072 } catch (RemoteException re) { 5073 /* ignore - the other side will time out */ 5074 } 5075 } 5076 } 5077 5078 public void findAccessibilityNodeInfosByTextClientThread(long accessibilityNodeId, 5079 String text, int interactionId, 5080 IAccessibilityInteractionConnectionCallback callback, int interrogatingPid, 5081 long interrogatingTid) { 5082 Message message = mHandler.obtainMessage(); 5083 message.what = MSG_FIND_ACCESSIBLITY_NODE_INFO_BY_TEXT; 5084 SomeArgs args = mPool.acquire(); 5085 args.arg1 = text; 5086 args.argi1 = AccessibilityNodeInfo.getAccessibilityViewId(accessibilityNodeId); 5087 args.argi2 = AccessibilityNodeInfo.getVirtualDescendantId(accessibilityNodeId); 5088 args.argi3 = interactionId; 5089 args.arg2 = callback; 5090 message.obj = args; 5091 // If the interrogation is performed by the same thread as the main UI 5092 // thread in this process, set the message as a static reference so 5093 // after this call completes the same thread but in the interrogating 5094 // client can handle the message to generate the result. 5095 if (interrogatingPid == Process.myPid() 5096 && interrogatingTid == Looper.getMainLooper().getThread().getId()) { 5097 AccessibilityInteractionClient.getInstanceForThread( 5098 interrogatingTid).setSameThreadMessage(message); 5099 } else { 5100 mHandler.sendMessage(message); 5101 } 5102 } 5103 5104 public void findAccessibilityNodeInfosByTextUiThread(Message message) { 5105 SomeArgs args = (SomeArgs) message.obj; 5106 final String text = (String) args.arg1; 5107 final int accessibilityViewId = args.argi1; 5108 final int virtualDescendantId = args.argi2; 5109 final int interactionId = args.argi3; 5110 final IAccessibilityInteractionConnectionCallback callback = 5111 (IAccessibilityInteractionConnectionCallback) args.arg2; 5112 mPool.release(args); 5113 List<AccessibilityNodeInfo> infos = null; 5114 try { 5115 View target; 5116 if (accessibilityViewId != AccessibilityNodeInfo.UNDEFINED) { 5117 target = findViewByAccessibilityId(accessibilityViewId); 5118 } else { 5119 target = ViewRootImpl.this.mView; 5120 } 5121 if (target != null && target.getVisibility() == View.VISIBLE) { 5122 AccessibilityNodeProvider provider = target.getAccessibilityNodeProvider(); 5123 if (provider != null) { 5124 infos = provider.findAccessibilityNodeInfosByText(text, 5125 virtualDescendantId); 5126 } else if (virtualDescendantId == AccessibilityNodeInfo.UNDEFINED) { 5127 ArrayList<View> foundViews = mAttachInfo.mFocusablesTempList; 5128 foundViews.clear(); 5129 target.findViewsWithText(foundViews, text, View.FIND_VIEWS_WITH_TEXT 5130 | View.FIND_VIEWS_WITH_CONTENT_DESCRIPTION 5131 | View.FIND_VIEWS_WITH_ACCESSIBILITY_NODE_PROVIDERS); 5132 if (!foundViews.isEmpty()) { 5133 infos = mTempAccessibilityNodeInfoList; 5134 infos.clear(); 5135 final int viewCount = foundViews.size(); 5136 for (int i = 0; i < viewCount; i++) { 5137 View foundView = foundViews.get(i); 5138 if (foundView.getVisibility() == View.VISIBLE) { 5139 provider = foundView.getAccessibilityNodeProvider(); 5140 if (provider != null) { 5141 List<AccessibilityNodeInfo> infosFromProvider = 5142 provider.findAccessibilityNodeInfosByText(text, 5143 virtualDescendantId); 5144 if (infosFromProvider != null) { 5145 infos.addAll(infosFromProvider); 5146 } 5147 } else { 5148 infos.add(foundView.createAccessibilityNodeInfo()); 5149 } 5150 } 5151 } 5152 } 5153 } 5154 } 5155 } finally { 5156 try { 5157 callback.setFindAccessibilityNodeInfosResult(infos, interactionId); 5158 } catch (RemoteException re) { 5159 /* ignore - the other side will time out */ 5160 } 5161 } 5162 } 5163 5164 public void performAccessibilityActionClientThread(long accessibilityNodeId, int action, 5165 int interactionId, IAccessibilityInteractionConnectionCallback callback, 5166 int interogatingPid, long interrogatingTid) { 5167 Message message = mHandler.obtainMessage(); 5168 message.what = MSG_PERFORM_ACCESSIBILITY_ACTION; 5169 message.arg1 = AccessibilityNodeInfo.getAccessibilityViewId(accessibilityNodeId); 5170 message.arg2 = AccessibilityNodeInfo.getVirtualDescendantId(accessibilityNodeId); 5171 SomeArgs args = mPool.acquire(); 5172 args.argi1 = action; 5173 args.argi2 = interactionId; 5174 args.arg1 = callback; 5175 message.obj = args; 5176 // If the interrogation is performed by the same thread as the main UI 5177 // thread in this process, set the message as a static reference so 5178 // after this call completes the same thread but in the interrogating 5179 // client can handle the message to generate the result. 5180 if (interogatingPid == Process.myPid() 5181 && interrogatingTid == Looper.getMainLooper().getThread().getId()) { 5182 AccessibilityInteractionClient.getInstanceForThread( 5183 interrogatingTid).setSameThreadMessage(message); 5184 } else { 5185 mHandler.sendMessage(message); 5186 } 5187 } 5188 5189 public void perfromAccessibilityActionUiThread(Message message) { 5190 final int accessibilityViewId = message.arg1; 5191 final int virtualDescendantId = message.arg2; 5192 SomeArgs args = (SomeArgs) message.obj; 5193 final int action = args.argi1; 5194 final int interactionId = args.argi2; 5195 final IAccessibilityInteractionConnectionCallback callback = 5196 (IAccessibilityInteractionConnectionCallback) args.arg1; 5197 mPool.release(args); 5198 boolean succeeded = false; 5199 try { 5200 View target = findViewByAccessibilityId(accessibilityViewId); 5201 if (target != null && target.getVisibility() == View.VISIBLE) { 5202 AccessibilityNodeProvider provider = target.getAccessibilityNodeProvider(); 5203 if (provider != null) { 5204 succeeded = provider.performAccessibilityAction(action, 5205 virtualDescendantId); 5206 } else if (virtualDescendantId == AccessibilityNodeInfo.UNDEFINED) { 5207 switch (action) { 5208 case AccessibilityNodeInfo.ACTION_FOCUS: { 5209 if (!target.hasFocus()) { 5210 // Get out of touch mode since accessibility 5211 // wants to move focus around. 5212 ensureTouchMode(false); 5213 succeeded = target.requestFocus(); 5214 } 5215 } break; 5216 case AccessibilityNodeInfo.ACTION_CLEAR_FOCUS: { 5217 if (target.hasFocus()) { 5218 target.clearFocus(); 5219 succeeded = !target.isFocused(); 5220 } 5221 } break; 5222 case AccessibilityNodeInfo.ACTION_SELECT: { 5223 if (!target.isSelected()) { 5224 target.setSelected(true); 5225 succeeded = target.isSelected(); 5226 } 5227 } break; 5228 case AccessibilityNodeInfo.ACTION_CLEAR_SELECTION: { 5229 if (target.isSelected()) { 5230 target.setSelected(false); 5231 succeeded = !target.isSelected(); 5232 } 5233 } break; 5234 } 5235 } 5236 } 5237 } finally { 5238 try { 5239 callback.setPerformAccessibilityActionResult(succeeded, interactionId); 5240 } catch (RemoteException re) { 5241 /* ignore - the other side will time out */ 5242 } 5243 } 5244 } 5245 5246 private View findViewByAccessibilityId(int accessibilityId) { 5247 View root = ViewRootImpl.this.mView; 5248 if (root == null) { 5249 return null; 5250 } 5251 View foundView = root.findViewByAccessibilityId(accessibilityId); 5252 if (foundView != null && foundView.getVisibility() != View.VISIBLE) { 5253 return null; 5254 } 5255 return foundView; 5256 } 5257 } 5258 5259 private class SendWindowContentChangedAccessibilityEvent implements Runnable { 5260 public volatile boolean mIsPending; 5261 5262 public void run() { 5263 if (mView != null) { 5264 mView.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED); 5265 mIsPending = false; 5266 } 5267 } 5268 } 5269 5270 /** 5271 * This class encapsulates a prefetching strategy for the accessibility APIs for 5272 * querying window content. It is responsible to prefetch a batch of 5273 * AccessibilityNodeInfos in addition to the one for a requested node. 5274 */ 5275 class AccessibilityNodePrefetcher { 5276 5277 private static final int MAX_ACCESSIBILITY_NODE_INFO_BATCH_SIZE = 50; 5278 5279 public void prefetchAccessibilityNodeInfos(View view, int virtualViewId, int prefetchFlags, 5280 List<AccessibilityNodeInfo> outInfos) { 5281 AccessibilityNodeProvider provider = view.getAccessibilityNodeProvider(); 5282 if (provider == null) { 5283 AccessibilityNodeInfo root = view.createAccessibilityNodeInfo(); 5284 if (root != null) { 5285 outInfos.add(root); 5286 if ((prefetchFlags & AccessibilityNodeInfo.FLAG_PREFETCH_PREDECESSORS) != 0) { 5287 prefetchPredecessorsOfRealNode(view, outInfos); 5288 } 5289 if ((prefetchFlags & AccessibilityNodeInfo.FLAG_PREFETCH_SIBLINGS) != 0) { 5290 prefetchSiblingsOfRealNode(view, outInfos); 5291 } 5292 if ((prefetchFlags & AccessibilityNodeInfo.FLAG_PREFETCH_DESCENDANTS) != 0) { 5293 prefetchDescendantsOfRealNode(view, outInfos); 5294 } 5295 } 5296 } else { 5297 AccessibilityNodeInfo root = provider.createAccessibilityNodeInfo(virtualViewId); 5298 if (root != null) { 5299 outInfos.add(root); 5300 if ((prefetchFlags & AccessibilityNodeInfo.FLAG_PREFETCH_PREDECESSORS) != 0) { 5301 prefetchPredecessorsOfVirtualNode(root, view, provider, outInfos); 5302 } 5303 if ((prefetchFlags & AccessibilityNodeInfo.FLAG_PREFETCH_SIBLINGS) != 0) { 5304 prefetchSiblingsOfVirtualNode(root, view, provider, outInfos); 5305 } 5306 if ((prefetchFlags & AccessibilityNodeInfo.FLAG_PREFETCH_DESCENDANTS) != 0) { 5307 prefetchDescendantsOfVirtualNode(root, provider, outInfos); 5308 } 5309 } 5310 } 5311 } 5312 5313 private void prefetchPredecessorsOfRealNode(View view, 5314 List<AccessibilityNodeInfo> outInfos) { 5315 ViewParent parent = view.getParent(); 5316 while (parent instanceof View 5317 && outInfos.size() < MAX_ACCESSIBILITY_NODE_INFO_BATCH_SIZE) { 5318 View parentView = (View) parent; 5319 final long parentNodeId = AccessibilityNodeInfo.makeNodeId( 5320 parentView.getAccessibilityViewId(), AccessibilityNodeInfo.UNDEFINED); 5321 AccessibilityNodeInfo info = parentView.createAccessibilityNodeInfo(); 5322 if (info != null) { 5323 outInfos.add(info); 5324 } 5325 parent = parent.getParent(); 5326 } 5327 } 5328 5329 private void prefetchSiblingsOfRealNode(View current, 5330 List<AccessibilityNodeInfo> outInfos) { 5331 ViewParent parent = current.getParent(); 5332 if (parent instanceof ViewGroup) { 5333 ViewGroup parentGroup = (ViewGroup) parent; 5334 final int childCount = parentGroup.getChildCount(); 5335 for (int i = 0; i < childCount; i++) { 5336 View child = parentGroup.getChildAt(i); 5337 if (outInfos.size() < MAX_ACCESSIBILITY_NODE_INFO_BATCH_SIZE 5338 && child.getAccessibilityViewId() != current.getAccessibilityViewId() 5339 && child.getVisibility() == View.VISIBLE) { 5340 final long childNodeId = AccessibilityNodeInfo.makeNodeId( 5341 child.getAccessibilityViewId(), AccessibilityNodeInfo.UNDEFINED); 5342 AccessibilityNodeInfo info = null; 5343 AccessibilityNodeProvider provider = child.getAccessibilityNodeProvider(); 5344 if (provider == null) { 5345 info = child.createAccessibilityNodeInfo(); 5346 } else { 5347 info = provider.createAccessibilityNodeInfo( 5348 AccessibilityNodeInfo.UNDEFINED); 5349 } 5350 if (info != null) { 5351 outInfos.add(info); 5352 } 5353 } 5354 } 5355 } 5356 } 5357 5358 private void prefetchDescendantsOfRealNode(View root, 5359 List<AccessibilityNodeInfo> outInfos) { 5360 if (root instanceof ViewGroup) { 5361 ViewGroup rootGroup = (ViewGroup) root; 5362 HashMap<View, AccessibilityNodeInfo> addedChildren = 5363 new HashMap<View, AccessibilityNodeInfo>(); 5364 final int childCount = rootGroup.getChildCount(); 5365 for (int i = 0; i < childCount; i++) { 5366 View child = rootGroup.getChildAt(i); 5367 if (child.getVisibility() == View.VISIBLE 5368 && outInfos.size() < MAX_ACCESSIBILITY_NODE_INFO_BATCH_SIZE) { 5369 final long childNodeId = AccessibilityNodeInfo.makeNodeId( 5370 child.getAccessibilityViewId(), AccessibilityNodeInfo.UNDEFINED); 5371 AccessibilityNodeProvider provider = child.getAccessibilityNodeProvider(); 5372 if (provider == null) { 5373 AccessibilityNodeInfo info = child.createAccessibilityNodeInfo(); 5374 if (info != null) { 5375 outInfos.add(info); 5376 addedChildren.put(child, null); 5377 } 5378 } else { 5379 AccessibilityNodeInfo info = provider.createAccessibilityNodeInfo( 5380 AccessibilityNodeInfo.UNDEFINED); 5381 if (info != null) { 5382 outInfos.add(info); 5383 addedChildren.put(child, info); 5384 } 5385 } 5386 } 5387 } 5388 if (outInfos.size() < MAX_ACCESSIBILITY_NODE_INFO_BATCH_SIZE) { 5389 for (Map.Entry<View, AccessibilityNodeInfo> entry : addedChildren.entrySet()) { 5390 View addedChild = entry.getKey(); 5391 AccessibilityNodeInfo virtualRoot = entry.getValue(); 5392 if (virtualRoot == null) { 5393 prefetchDescendantsOfRealNode(addedChild, outInfos); 5394 } else { 5395 AccessibilityNodeProvider provider = 5396 addedChild.getAccessibilityNodeProvider(); 5397 prefetchDescendantsOfVirtualNode(virtualRoot, provider, outInfos); 5398 } 5399 } 5400 } 5401 } 5402 } 5403 5404 private void prefetchPredecessorsOfVirtualNode(AccessibilityNodeInfo root, 5405 View providerHost, AccessibilityNodeProvider provider, 5406 List<AccessibilityNodeInfo> outInfos) { 5407 long parentNodeId = root.getParentNodeId(); 5408 int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId(parentNodeId); 5409 while (accessibilityViewId != AccessibilityNodeInfo.UNDEFINED) { 5410 final int virtualDescendantId = 5411 AccessibilityNodeInfo.getVirtualDescendantId(parentNodeId); 5412 if (virtualDescendantId != AccessibilityNodeInfo.UNDEFINED 5413 || accessibilityViewId == providerHost.getAccessibilityViewId()) { 5414 AccessibilityNodeInfo parent = provider.createAccessibilityNodeInfo( 5415 virtualDescendantId); 5416 if (parent != null) { 5417 outInfos.add(parent); 5418 } 5419 parentNodeId = parent.getParentNodeId(); 5420 accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 5421 parentNodeId); 5422 } else { 5423 prefetchPredecessorsOfRealNode(providerHost, outInfos); 5424 return; 5425 } 5426 } 5427 } 5428 5429 private void prefetchSiblingsOfVirtualNode(AccessibilityNodeInfo current, View providerHost, 5430 AccessibilityNodeProvider provider, List<AccessibilityNodeInfo> outInfos) { 5431 final long parentNodeId = current.getParentNodeId(); 5432 final int parentAccessibilityViewId = 5433 AccessibilityNodeInfo.getAccessibilityViewId(parentNodeId); 5434 final int parentVirtualDescendantId = 5435 AccessibilityNodeInfo.getVirtualDescendantId(parentNodeId); 5436 if (parentVirtualDescendantId != AccessibilityNodeInfo.UNDEFINED 5437 || parentAccessibilityViewId == providerHost.getAccessibilityViewId()) { 5438 AccessibilityNodeInfo parent = 5439 provider.createAccessibilityNodeInfo(parentVirtualDescendantId); 5440 if (parent != null) { 5441 SparseLongArray childNodeIds = parent.getChildNodeIds(); 5442 final int childCount = childNodeIds.size(); 5443 for (int i = 0; i < childCount; i++) { 5444 final long childNodeId = childNodeIds.get(i); 5445 if (childNodeId != current.getSourceNodeId() 5446 && outInfos.size() < MAX_ACCESSIBILITY_NODE_INFO_BATCH_SIZE) { 5447 final int childVirtualDescendantId = 5448 AccessibilityNodeInfo.getVirtualDescendantId(childNodeId); 5449 AccessibilityNodeInfo child = provider.createAccessibilityNodeInfo( 5450 childVirtualDescendantId); 5451 if (child != null) { 5452 outInfos.add(child); 5453 } 5454 } 5455 } 5456 } 5457 } else { 5458 prefetchSiblingsOfRealNode(providerHost, outInfos); 5459 } 5460 } 5461 5462 private void prefetchDescendantsOfVirtualNode(AccessibilityNodeInfo root, 5463 AccessibilityNodeProvider provider, List<AccessibilityNodeInfo> outInfos) { 5464 SparseLongArray childNodeIds = root.getChildNodeIds(); 5465 final int initialOutInfosSize = outInfos.size(); 5466 final int childCount = childNodeIds.size(); 5467 for (int i = 0; i < childCount; i++) { 5468 if (outInfos.size() < MAX_ACCESSIBILITY_NODE_INFO_BATCH_SIZE) { 5469 final long childNodeId = childNodeIds.get(i); 5470 AccessibilityNodeInfo child = provider.createAccessibilityNodeInfo( 5471 AccessibilityNodeInfo.getVirtualDescendantId(childNodeId)); 5472 if (child != null) { 5473 outInfos.add(child); 5474 } 5475 } 5476 } 5477 if (outInfos.size() < MAX_ACCESSIBILITY_NODE_INFO_BATCH_SIZE) { 5478 final int addedChildCount = outInfos.size() - initialOutInfosSize; 5479 for (int i = 0; i < addedChildCount; i++) { 5480 AccessibilityNodeInfo child = outInfos.get(initialOutInfosSize + i); 5481 prefetchDescendantsOfVirtualNode(child, provider, outInfos); 5482 } 5483 } 5484 } 5485 } 5486} 5487