ViewRootImpl.java revision 7ae9d5faad5816f7e567ec1ec77e78d746cf7e5c
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.Process; 50import android.os.RemoteException; 51import android.os.SystemClock; 52import android.os.SystemProperties; 53import android.util.AndroidRuntimeException; 54import android.util.DisplayMetrics; 55import android.util.EventLog; 56import android.util.Log; 57import android.util.Pool; 58import android.util.Poolable; 59import android.util.PoolableManager; 60import android.util.Pools; 61import android.util.Slog; 62import android.util.SparseLongArray; 63import android.util.TypedValue; 64import android.view.View.AttachInfo; 65import android.view.View.MeasureSpec; 66import android.view.accessibility.AccessibilityEvent; 67import android.view.accessibility.AccessibilityInteractionClient; 68import android.view.accessibility.AccessibilityManager; 69import android.view.accessibility.AccessibilityManager.AccessibilityStateChangeListener; 70import android.view.accessibility.AccessibilityNodeInfo; 71import android.view.accessibility.AccessibilityNodeProvider; 72import android.view.accessibility.IAccessibilityInteractionConnection; 73import android.view.accessibility.IAccessibilityInteractionConnectionCallback; 74import android.view.animation.AccelerateDecelerateInterpolator; 75import android.view.animation.Interpolator; 76import android.view.inputmethod.InputConnection; 77import android.view.inputmethod.InputMethodManager; 78import android.widget.Scroller; 79 80import com.android.internal.policy.PolicyManager; 81import com.android.internal.view.BaseSurfaceHolder; 82import com.android.internal.view.IInputMethodCallback; 83import com.android.internal.view.IInputMethodSession; 84import com.android.internal.view.RootViewSurfaceTaker; 85 86import java.io.IOException; 87import java.io.OutputStream; 88import java.lang.ref.WeakReference; 89import java.util.ArrayList; 90import java.util.HashMap; 91import java.util.List; 92import java.util.Map; 93 94/** 95 * The top of a view hierarchy, implementing the needed protocol between View 96 * and the WindowManager. This is for the most part an internal implementation 97 * detail of {@link WindowManagerImpl}. 98 * 99 * {@hide} 100 */ 101@SuppressWarnings({"EmptyCatchBlock", "PointlessBooleanExpression"}) 102public final class ViewRootImpl implements ViewParent, 103 View.AttachInfo.Callbacks, HardwareRenderer.HardwareDrawCallbacks { 104 private static final String TAG = "ViewRootImpl"; 105 private static final boolean DBG = false; 106 private static final boolean LOCAL_LOGV = false; 107 /** @noinspection PointlessBooleanExpression*/ 108 private static final boolean DEBUG_DRAW = false || LOCAL_LOGV; 109 private static final boolean DEBUG_LAYOUT = false || LOCAL_LOGV; 110 private static final boolean DEBUG_DIALOG = false || LOCAL_LOGV; 111 private static final boolean DEBUG_INPUT_RESIZE = false || LOCAL_LOGV; 112 private static final boolean DEBUG_ORIENTATION = false || LOCAL_LOGV; 113 private static final boolean DEBUG_TRACKBALL = false || LOCAL_LOGV; 114 private static final boolean DEBUG_IMF = false || LOCAL_LOGV; 115 private static final boolean DEBUG_CONFIGURATION = false || LOCAL_LOGV; 116 private static final boolean DEBUG_FPS = false; 117 118 /** 119 * Set this system property to true to force the view hierarchy to render 120 * at 60 Hz. This can be used to measure the potential framerate. 121 */ 122 private static final String PROPERTY_PROFILE_RENDERING = "viewancestor.profile_rendering"; 123 124 private static final boolean MEASURE_LATENCY = false; 125 private static LatencyTimer lt; 126 127 /** 128 * Maximum time we allow the user to roll the trackball enough to generate 129 * a key event, before resetting the counters. 130 */ 131 static final int MAX_TRACKBALL_DELAY = 250; 132 133 static IWindowSession sWindowSession; 134 135 static final Object mStaticInit = new Object(); 136 static boolean mInitialized = false; 137 138 static final ThreadLocal<RunQueue> sRunQueues = new ThreadLocal<RunQueue>(); 139 140 static final ArrayList<Runnable> sFirstDrawHandlers = new ArrayList<Runnable>(); 141 static boolean sFirstDrawComplete = false; 142 143 static final ArrayList<ComponentCallbacks> sConfigCallbacks 144 = new ArrayList<ComponentCallbacks>(); 145 146 private static boolean sUseRenderThread = false; 147 private static boolean sRenderThreadQueried = false; 148 private static final Object[] sRenderThreadQueryLock = new Object[0]; 149 150 long mLastTrackballTime = 0; 151 final TrackballAxis mTrackballAxisX = new TrackballAxis(); 152 final TrackballAxis mTrackballAxisY = new TrackballAxis(); 153 154 int mLastJoystickXDirection; 155 int mLastJoystickYDirection; 156 int mLastJoystickXKeyCode; 157 int mLastJoystickYKeyCode; 158 159 final int[] mTmpLocation = new int[2]; 160 161 final TypedValue mTmpValue = new TypedValue(); 162 163 final InputMethodCallback mInputMethodCallback; 164 final Thread mThread; 165 166 final WindowLeaked mLocation; 167 168 final WindowManager.LayoutParams mWindowAttributes = new WindowManager.LayoutParams(); 169 170 final W mWindow; 171 172 final int mTargetSdkVersion; 173 174 int mSeq; 175 176 View mView; 177 View mFocusedView; 178 View mRealFocusedView; // this is not set to null in touch mode 179 View mOldFocusedView; 180 int mViewVisibility; 181 boolean mAppVisible = true; 182 int mOrigWindowType = -1; 183 184 // Set to true if the owner of this window is in the stopped state, 185 // so the window should no longer be active. 186 boolean mStopped = false; 187 188 boolean mLastInCompatMode = false; 189 190 SurfaceHolder.Callback2 mSurfaceHolderCallback; 191 BaseSurfaceHolder mSurfaceHolder; 192 boolean mIsCreating; 193 boolean mDrawingAllowed; 194 195 final Region mTransparentRegion; 196 final Region mPreviousTransparentRegion; 197 198 int mWidth; 199 int mHeight; 200 Rect mDirty; 201 final Rect mCurrentDirty = new Rect(); 202 final Rect mPreviousDirty = new Rect(); 203 boolean mIsAnimating; 204 205 CompatibilityInfo.Translator mTranslator; 206 207 final View.AttachInfo mAttachInfo; 208 InputChannel mInputChannel; 209 InputQueue.Callback mInputQueueCallback; 210 InputQueue mInputQueue; 211 FallbackEventHandler mFallbackEventHandler; 212 Choreographer mChoreographer; 213 214 final Rect mTempRect; // used in the transaction to not thrash the heap. 215 final Rect mVisRect; // used to retrieve visible rect of focused view. 216 217 boolean mTraversalScheduled; 218 int mTraversalBarrier; 219 long mLastTraversalFinishedTimeNanos; 220 long mLastDrawFinishedTimeNanos; 221 boolean mWillDrawSoon; 222 boolean mLayoutRequested; 223 boolean mFirst; 224 boolean mReportNextDraw; 225 boolean mFullRedrawNeeded; 226 boolean mNewSurfaceNeeded; 227 boolean mHasHadWindowFocus; 228 boolean mLastWasImTarget; 229 230 // Pool of queued input events. 231 private static final int MAX_QUEUED_INPUT_EVENT_POOL_SIZE = 10; 232 private QueuedInputEvent mQueuedInputEventPool; 233 private int mQueuedInputEventPoolSize; 234 235 // Input event queue. 236 QueuedInputEvent mFirstPendingInputEvent; 237 QueuedInputEvent mCurrentInputEvent; 238 boolean mProcessInputEventsScheduled; 239 240 boolean mWindowAttributesChanged = false; 241 int mWindowAttributesChangesFlag = 0; 242 243 // These can be accessed by any thread, must be protected with a lock. 244 // Surface can never be reassigned or cleared (use Surface.clear()). 245 private final Surface mSurface = new Surface(); 246 247 boolean mAdded; 248 boolean mAddedTouchMode; 249 250 CompatibilityInfoHolder mCompatibilityInfo; 251 252 /*package*/ int mAddNesting; 253 254 // These are accessed by multiple threads. 255 final Rect mWinFrame; // frame given by window manager. 256 257 final Rect mPendingVisibleInsets = new Rect(); 258 final Rect mPendingContentInsets = new Rect(); 259 final ViewTreeObserver.InternalInsetsInfo mLastGivenInsets 260 = new ViewTreeObserver.InternalInsetsInfo(); 261 262 final Configuration mLastConfiguration = new Configuration(); 263 final Configuration mPendingConfiguration = new Configuration(); 264 265 class ResizedInfo { 266 Rect coveredInsets; 267 Rect visibleInsets; 268 Configuration newConfig; 269 } 270 271 boolean mScrollMayChange; 272 int mSoftInputMode; 273 View mLastScrolledFocus; 274 int mScrollY; 275 int mCurScrollY; 276 Scroller mScroller; 277 HardwareLayer mResizeBuffer; 278 long mResizeBufferStartTime; 279 int mResizeBufferDuration; 280 static final Interpolator mResizeInterpolator = new AccelerateDecelerateInterpolator(); 281 private ArrayList<LayoutTransition> mPendingTransitions; 282 283 final ViewConfiguration mViewConfiguration; 284 285 /* Drag/drop */ 286 ClipDescription mDragDescription; 287 View mCurrentDragView; 288 volatile Object mLocalDragState; 289 final PointF mDragPoint = new PointF(); 290 final PointF mLastTouchPoint = new PointF(); 291 292 private boolean mProfileRendering; 293 private Thread mRenderProfiler; 294 private volatile boolean mRenderProfilingEnabled; 295 296 // Variables to track frames per second, enabled via DEBUG_FPS flag 297 private long mFpsStartTime = -1; 298 private long mFpsPrevTime = -1; 299 private int mFpsNumFrames; 300 301 /** 302 * see {@link #playSoundEffect(int)} 303 */ 304 AudioManager mAudioManager; 305 306 final AccessibilityManager mAccessibilityManager; 307 308 AccessibilityInteractionController mAccessibilityInteractionController; 309 310 AccessibilityInteractionConnectionManager mAccessibilityInteractionConnectionManager; 311 312 SendWindowContentChangedAccessibilityEvent mSendWindowContentChangedAccessibilityEvent; 313 314 AccessibilityNodePrefetcher mAccessibilityNodePrefetcher; 315 316 private final int mDensity; 317 318 /** 319 * Consistency verifier for debugging purposes. 320 */ 321 protected final InputEventConsistencyVerifier mInputEventConsistencyVerifier = 322 InputEventConsistencyVerifier.isInstrumentationEnabled() ? 323 new InputEventConsistencyVerifier(this, 0) : null; 324 325 public static IWindowSession getWindowSession(Looper mainLooper) { 326 synchronized (mStaticInit) { 327 if (!mInitialized) { 328 try { 329 InputMethodManager imm = InputMethodManager.getInstance(mainLooper); 330 IWindowManager windowManager = Display.getWindowManager(); 331 sWindowSession = windowManager.openSession( 332 imm.getClient(), imm.getInputContext()); 333 float animatorScale = windowManager.getAnimationScale(2); 334 ValueAnimator.setDurationScale(animatorScale); 335 mInitialized = true; 336 } catch (RemoteException e) { 337 } 338 } 339 return sWindowSession; 340 } 341 } 342 343 static final class SystemUiVisibilityInfo { 344 int seq; 345 int globalVisibility; 346 int localValue; 347 int localChanges; 348 } 349 350 public ViewRootImpl(Context context) { 351 super(); 352 353 if (MEASURE_LATENCY) { 354 if (lt == null) { 355 lt = new LatencyTimer(100, 1000); 356 } 357 } 358 359 // Initialize the statics when this class is first instantiated. This is 360 // done here instead of in the static block because Zygote does not 361 // allow the spawning of threads. 362 getWindowSession(context.getMainLooper()); 363 364 mThread = Thread.currentThread(); 365 mLocation = new WindowLeaked(null); 366 mLocation.fillInStackTrace(); 367 mWidth = -1; 368 mHeight = -1; 369 mDirty = new Rect(); 370 mTempRect = new Rect(); 371 mVisRect = new Rect(); 372 mWinFrame = new Rect(); 373 mWindow = new W(this); 374 mTargetSdkVersion = context.getApplicationInfo().targetSdkVersion; 375 mInputMethodCallback = new InputMethodCallback(this); 376 mViewVisibility = View.GONE; 377 mTransparentRegion = new Region(); 378 mPreviousTransparentRegion = new Region(); 379 mFirst = true; // true for the first time the view is added 380 mAdded = false; 381 mAccessibilityManager = AccessibilityManager.getInstance(context); 382 mAccessibilityInteractionConnectionManager = 383 new AccessibilityInteractionConnectionManager(); 384 mAccessibilityManager.addAccessibilityStateChangeListener( 385 mAccessibilityInteractionConnectionManager); 386 mAttachInfo = new View.AttachInfo(sWindowSession, mWindow, this, mHandler, this); 387 mViewConfiguration = ViewConfiguration.get(context); 388 mDensity = context.getResources().getDisplayMetrics().densityDpi; 389 mFallbackEventHandler = PolicyManager.makeNewFallbackEventHandler(context); 390 mProfileRendering = Boolean.parseBoolean( 391 SystemProperties.get(PROPERTY_PROFILE_RENDERING, "false")); 392 mChoreographer = Choreographer.getInstance(); 393 } 394 395 /** 396 * @return True if the application requests the use of a separate render thread, 397 * false otherwise 398 */ 399 private static boolean isRenderThreadRequested(Context context) { 400 synchronized (sRenderThreadQueryLock) { 401 if (!sRenderThreadQueried) { 402 final PackageManager packageManager = context.getPackageManager(); 403 final String packageName = context.getApplicationInfo().packageName; 404 try { 405 ApplicationInfo applicationInfo = packageManager.getApplicationInfo(packageName, 406 PackageManager.GET_META_DATA); 407 if (applicationInfo.metaData != null) { 408 sUseRenderThread = applicationInfo.metaData.getBoolean( 409 "android.graphics.renderThread", false); 410 } 411 } catch (PackageManager.NameNotFoundException e) { 412 } finally { 413 sRenderThreadQueried = true; 414 } 415 } 416 return sUseRenderThread; 417 } 418 } 419 420 public static void addFirstDrawHandler(Runnable callback) { 421 synchronized (sFirstDrawHandlers) { 422 if (!sFirstDrawComplete) { 423 sFirstDrawHandlers.add(callback); 424 } 425 } 426 } 427 428 public static void addConfigCallback(ComponentCallbacks callback) { 429 synchronized (sConfigCallbacks) { 430 sConfigCallbacks.add(callback); 431 } 432 } 433 434 // FIXME for perf testing only 435 private boolean mProfile = false; 436 437 /** 438 * Call this to profile the next traversal call. 439 * FIXME for perf testing only. Remove eventually 440 */ 441 public void profile() { 442 mProfile = true; 443 } 444 445 /** 446 * Indicates whether we are in touch mode. Calling this method triggers an IPC 447 * call and should be avoided whenever possible. 448 * 449 * @return True, if the device is in touch mode, false otherwise. 450 * 451 * @hide 452 */ 453 static boolean isInTouchMode() { 454 if (mInitialized) { 455 try { 456 return sWindowSession.getInTouchMode(); 457 } catch (RemoteException e) { 458 } 459 } 460 return false; 461 } 462 463 /** 464 * We have one child 465 */ 466 public void setView(View view, WindowManager.LayoutParams attrs, View panelParentView) { 467 synchronized (this) { 468 if (mView == null) { 469 mView = view; 470 mFallbackEventHandler.setView(view); 471 mWindowAttributes.copyFrom(attrs); 472 attrs = mWindowAttributes; 473 474 if (view instanceof RootViewSurfaceTaker) { 475 mSurfaceHolderCallback = 476 ((RootViewSurfaceTaker)view).willYouTakeTheSurface(); 477 if (mSurfaceHolderCallback != null) { 478 mSurfaceHolder = new TakenSurfaceHolder(); 479 mSurfaceHolder.setFormat(PixelFormat.UNKNOWN); 480 } 481 } 482 483 CompatibilityInfo compatibilityInfo = mCompatibilityInfo.get(); 484 mTranslator = compatibilityInfo.getTranslator(); 485 486 // If the application owns the surface, don't enable hardware acceleration 487 if (mSurfaceHolder == null) { 488 enableHardwareAcceleration(mView.getContext(), attrs); 489 } 490 491 boolean restore = false; 492 if (mTranslator != null) { 493 mSurface.setCompatibilityTranslator(mTranslator); 494 restore = true; 495 attrs.backup(); 496 mTranslator.translateWindowLayout(attrs); 497 } 498 if (DEBUG_LAYOUT) Log.d(TAG, "WindowLayout in setView:" + attrs); 499 500 if (!compatibilityInfo.supportsScreen()) { 501 attrs.flags |= WindowManager.LayoutParams.FLAG_COMPATIBLE_WINDOW; 502 mLastInCompatMode = true; 503 } 504 505 mSoftInputMode = attrs.softInputMode; 506 mWindowAttributesChanged = true; 507 mWindowAttributesChangesFlag = WindowManager.LayoutParams.EVERYTHING_CHANGED; 508 mAttachInfo.mRootView = view; 509 mAttachInfo.mScalingRequired = mTranslator != null; 510 mAttachInfo.mApplicationScale = 511 mTranslator == null ? 1.0f : mTranslator.applicationScale; 512 if (panelParentView != null) { 513 mAttachInfo.mPanelParentWindowToken 514 = panelParentView.getApplicationWindowToken(); 515 } 516 mAdded = true; 517 int res; /* = WindowManagerImpl.ADD_OKAY; */ 518 519 // Schedule the first layout -before- adding to the window 520 // manager, to make sure we do the relayout before receiving 521 // any other events from the system. 522 requestLayout(); 523 if ((mWindowAttributes.inputFeatures 524 & WindowManager.LayoutParams.INPUT_FEATURE_NO_INPUT_CHANNEL) == 0) { 525 mInputChannel = new InputChannel(); 526 } 527 try { 528 mOrigWindowType = mWindowAttributes.type; 529 res = sWindowSession.add(mWindow, mSeq, mWindowAttributes, 530 getHostVisibility(), mAttachInfo.mContentInsets, 531 mInputChannel); 532 } catch (RemoteException e) { 533 mAdded = false; 534 mView = null; 535 mAttachInfo.mRootView = null; 536 mInputChannel = null; 537 mFallbackEventHandler.setView(null); 538 unscheduleTraversals(); 539 throw new RuntimeException("Adding window failed", e); 540 } finally { 541 if (restore) { 542 attrs.restore(); 543 } 544 } 545 546 if (mTranslator != null) { 547 mTranslator.translateRectInScreenToAppWindow(mAttachInfo.mContentInsets); 548 } 549 mPendingContentInsets.set(mAttachInfo.mContentInsets); 550 mPendingVisibleInsets.set(0, 0, 0, 0); 551 if (DEBUG_LAYOUT) Log.v(TAG, "Added window " + mWindow); 552 if (res < WindowManagerImpl.ADD_OKAY) { 553 mView = null; 554 mAttachInfo.mRootView = null; 555 mAdded = false; 556 mFallbackEventHandler.setView(null); 557 unscheduleTraversals(); 558 switch (res) { 559 case WindowManagerImpl.ADD_BAD_APP_TOKEN: 560 case WindowManagerImpl.ADD_BAD_SUBWINDOW_TOKEN: 561 throw new WindowManagerImpl.BadTokenException( 562 "Unable to add window -- token " + attrs.token 563 + " is not valid; is your activity running?"); 564 case WindowManagerImpl.ADD_NOT_APP_TOKEN: 565 throw new WindowManagerImpl.BadTokenException( 566 "Unable to add window -- token " + attrs.token 567 + " is not for an application"); 568 case WindowManagerImpl.ADD_APP_EXITING: 569 throw new WindowManagerImpl.BadTokenException( 570 "Unable to add window -- app for token " + attrs.token 571 + " is exiting"); 572 case WindowManagerImpl.ADD_DUPLICATE_ADD: 573 throw new WindowManagerImpl.BadTokenException( 574 "Unable to add window -- window " + mWindow 575 + " has already been added"); 576 case WindowManagerImpl.ADD_STARTING_NOT_NEEDED: 577 // Silently ignore -- we would have just removed it 578 // right away, anyway. 579 return; 580 case WindowManagerImpl.ADD_MULTIPLE_SINGLETON: 581 throw new WindowManagerImpl.BadTokenException( 582 "Unable to add window " + mWindow + 583 " -- another window of this type already exists"); 584 case WindowManagerImpl.ADD_PERMISSION_DENIED: 585 throw new WindowManagerImpl.BadTokenException( 586 "Unable to add window " + mWindow + 587 " -- permission denied for this window type"); 588 } 589 throw new RuntimeException( 590 "Unable to add window -- unknown error code " + res); 591 } 592 593 if (view instanceof RootViewSurfaceTaker) { 594 mInputQueueCallback = 595 ((RootViewSurfaceTaker)view).willYouTakeTheInputQueue(); 596 } 597 if (mInputChannel != null) { 598 if (mInputQueueCallback != null) { 599 mInputQueue = new InputQueue(mInputChannel); 600 mInputQueueCallback.onInputQueueCreated(mInputQueue); 601 } else { 602 mInputEventReceiver = new WindowInputEventReceiver(mInputChannel, 603 Looper.myLooper()); 604 } 605 } 606 607 view.assignParent(this); 608 mAddedTouchMode = (res&WindowManagerImpl.ADD_FLAG_IN_TOUCH_MODE) != 0; 609 mAppVisible = (res&WindowManagerImpl.ADD_FLAG_APP_VISIBLE) != 0; 610 611 if (mAccessibilityManager.isEnabled()) { 612 mAccessibilityInteractionConnectionManager.ensureConnection(); 613 } 614 } 615 } 616 } 617 618 void destroyHardwareResources() { 619 if (mAttachInfo.mHardwareRenderer != null) { 620 if (mAttachInfo.mHardwareRenderer.isEnabled()) { 621 mAttachInfo.mHardwareRenderer.destroyLayers(mView); 622 } 623 mAttachInfo.mHardwareRenderer.destroy(false); 624 } 625 } 626 627 void terminateHardwareResources() { 628 if (mAttachInfo.mHardwareRenderer != null) { 629 mAttachInfo.mHardwareRenderer.destroyHardwareResources(mView); 630 mAttachInfo.mHardwareRenderer.destroy(false); 631 } 632 } 633 634 void destroyHardwareLayers() { 635 if (mThread != Thread.currentThread()) { 636 if (mAttachInfo.mHardwareRenderer != null && 637 mAttachInfo.mHardwareRenderer.isEnabled()) { 638 HardwareRenderer.trimMemory(ComponentCallbacks2.TRIM_MEMORY_MODERATE); 639 } 640 } else { 641 if (mAttachInfo.mHardwareRenderer != null && 642 mAttachInfo.mHardwareRenderer.isEnabled()) { 643 mAttachInfo.mHardwareRenderer.destroyLayers(mView); 644 } 645 } 646 } 647 648 private void enableHardwareAcceleration(Context context, WindowManager.LayoutParams attrs) { 649 mAttachInfo.mHardwareAccelerated = false; 650 mAttachInfo.mHardwareAccelerationRequested = false; 651 652 // Don't enable hardware acceleration when the application is in compatibility mode 653 if (mTranslator != null) return; 654 655 // Try to enable hardware acceleration if requested 656 final boolean hardwareAccelerated = 657 (attrs.flags & WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED) != 0; 658 659 if (hardwareAccelerated) { 660 if (!HardwareRenderer.isAvailable()) { 661 return; 662 } 663 664 // Persistent processes (including the system) should not do 665 // accelerated rendering on low-end devices. In that case, 666 // sRendererDisabled will be set. In addition, the system process 667 // itself should never do accelerated rendering. In that case, both 668 // sRendererDisabled and sSystemRendererDisabled are set. When 669 // sSystemRendererDisabled is set, PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED 670 // can be used by code on the system process to escape that and enable 671 // HW accelerated drawing. (This is basically for the lock screen.) 672 673 final boolean fakeHwAccelerated = (attrs.privateFlags & 674 WindowManager.LayoutParams.PRIVATE_FLAG_FAKE_HARDWARE_ACCELERATED) != 0; 675 final boolean forceHwAccelerated = (attrs.privateFlags & 676 WindowManager.LayoutParams.PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED) != 0; 677 678 if (!HardwareRenderer.sRendererDisabled || (HardwareRenderer.sSystemRendererDisabled 679 && forceHwAccelerated)) { 680 // Don't enable hardware acceleration when we're not on the main thread 681 if (!HardwareRenderer.sSystemRendererDisabled && 682 Looper.getMainLooper() != Looper.myLooper()) { 683 Log.w(HardwareRenderer.LOG_TAG, "Attempting to initialize hardware " 684 + "acceleration outside of the main thread, aborting"); 685 return; 686 } 687 688 boolean renderThread = isRenderThreadRequested(context); 689 if (renderThread) { 690 Log.i(HardwareRenderer.LOG_TAG, "Render threat initiated"); 691 } 692 693 if (mAttachInfo.mHardwareRenderer != null) { 694 mAttachInfo.mHardwareRenderer.destroy(true); 695 } 696 697 final boolean translucent = attrs.format != PixelFormat.OPAQUE; 698 mAttachInfo.mHardwareRenderer = HardwareRenderer.createGlRenderer(2, translucent); 699 mAttachInfo.mHardwareAccelerated = mAttachInfo.mHardwareAccelerationRequested 700 = mAttachInfo.mHardwareRenderer != null; 701 702 } else if (fakeHwAccelerated) { 703 // The window had wanted to use hardware acceleration, but this 704 // is not allowed in its process. By setting this flag, it can 705 // still render as if it was accelerated. This is basically for 706 // the preview windows the window manager shows for launching 707 // applications, so they will look more like the app being launched. 708 mAttachInfo.mHardwareAccelerationRequested = true; 709 } 710 } 711 } 712 713 public View getView() { 714 return mView; 715 } 716 717 final WindowLeaked getLocation() { 718 return mLocation; 719 } 720 721 void setLayoutParams(WindowManager.LayoutParams attrs, boolean newView) { 722 synchronized (this) { 723 int oldSoftInputMode = mWindowAttributes.softInputMode; 724 // preserve compatible window flag if exists. 725 int compatibleWindowFlag = 726 mWindowAttributes.flags & WindowManager.LayoutParams.FLAG_COMPATIBLE_WINDOW; 727 mWindowAttributesChangesFlag = mWindowAttributes.copyFrom(attrs); 728 mWindowAttributes.flags |= compatibleWindowFlag; 729 730 if (newView) { 731 mSoftInputMode = attrs.softInputMode; 732 requestLayout(); 733 } 734 // Don't lose the mode we last auto-computed. 735 if ((attrs.softInputMode&WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 736 == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 737 mWindowAttributes.softInputMode = (mWindowAttributes.softInputMode 738 & ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 739 | (oldSoftInputMode 740 & WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST); 741 } 742 mWindowAttributesChanged = true; 743 scheduleTraversals(); 744 } 745 } 746 747 void handleAppVisibility(boolean visible) { 748 if (mAppVisible != visible) { 749 mAppVisible = visible; 750 scheduleTraversals(); 751 } 752 } 753 754 void handleGetNewSurface() { 755 mNewSurfaceNeeded = true; 756 mFullRedrawNeeded = true; 757 scheduleTraversals(); 758 } 759 760 /** 761 * {@inheritDoc} 762 */ 763 public void requestLayout() { 764 checkThread(); 765 mLayoutRequested = true; 766 scheduleTraversals(); 767 } 768 769 /** 770 * {@inheritDoc} 771 */ 772 public boolean isLayoutRequested() { 773 return mLayoutRequested; 774 } 775 776 void invalidate() { 777 mDirty.set(0, 0, mWidth, mHeight); 778 scheduleTraversals(); 779 } 780 781 public void invalidateChild(View child, Rect dirty) { 782 invalidateChildInParent(null, dirty); 783 } 784 785 public ViewParent invalidateChildInParent(int[] location, Rect dirty) { 786 checkThread(); 787 if (DEBUG_DRAW) Log.v(TAG, "Invalidate child: " + dirty); 788 789 if (dirty == null) { 790 invalidate(); 791 return null; 792 } 793 794 if (mCurScrollY != 0 || mTranslator != null) { 795 mTempRect.set(dirty); 796 dirty = mTempRect; 797 if (mCurScrollY != 0) { 798 dirty.offset(0, -mCurScrollY); 799 } 800 if (mTranslator != null) { 801 mTranslator.translateRectInAppWindowToScreen(dirty); 802 } 803 if (mAttachInfo.mScalingRequired) { 804 dirty.inset(-1, -1); 805 } 806 } 807 808 final Rect localDirty = mDirty; 809 if (!localDirty.isEmpty() && !localDirty.contains(dirty)) { 810 mAttachInfo.mSetIgnoreDirtyState = true; 811 mAttachInfo.mIgnoreDirtyState = true; 812 } 813 814 // Add the new dirty rect to the current one 815 localDirty.union(dirty.left, dirty.top, dirty.right, dirty.bottom); 816 // Intersect with the bounds of the window to skip 817 // updates that lie outside of the visible region 818 localDirty.intersect(0, 0, mWidth, mHeight); 819 820 if (!mWillDrawSoon) { 821 scheduleTraversals(); 822 } 823 824 return null; 825 } 826 827 void setStopped(boolean stopped) { 828 if (mStopped != stopped) { 829 mStopped = stopped; 830 if (!stopped) { 831 scheduleTraversals(); 832 } 833 } 834 } 835 836 public ViewParent getParent() { 837 return null; 838 } 839 840 public boolean getChildVisibleRect(View child, Rect r, android.graphics.Point offset) { 841 if (child != mView) { 842 throw new RuntimeException("child is not mine, honest!"); 843 } 844 // Note: don't apply scroll offset, because we want to know its 845 // visibility in the virtual canvas being given to the view hierarchy. 846 return r.intersect(0, 0, mWidth, mHeight); 847 } 848 849 public void bringChildToFront(View child) { 850 } 851 852 public void scheduleTraversals() { 853 if (!mTraversalScheduled) { 854 mTraversalScheduled = true; 855 mTraversalBarrier = mHandler.getLooper().postSyncBarrier(); 856 scheduleFrame(); 857 } 858 } 859 860 public void unscheduleTraversals() { 861 if (mTraversalScheduled) { 862 mTraversalScheduled = false; 863 mHandler.getLooper().removeSyncBarrier(mTraversalBarrier); 864 } 865 } 866 867 void scheduleFrame() { 868 if (!mFrameScheduled) { 869 mFrameScheduled = true; 870 mChoreographer.postDrawCallback(mFrameRunnable, null); 871 } 872 } 873 874 void unscheduleFrame() { 875 unscheduleTraversals(); 876 877 if (mFrameScheduled) { 878 mFrameScheduled = false; 879 mChoreographer.removeDrawCallbacks(mFrameRunnable, null); 880 } 881 } 882 883 void doFrame() { 884 if (mInputEventReceiver != null) { 885 mInputEventReceiver.consumeBatchedInputEvents(); 886 } 887 doProcessInputEvents(); 888 889 if (mTraversalScheduled) { 890 mTraversalScheduled = false; 891 mHandler.getLooper().removeSyncBarrier(mTraversalBarrier); 892 doTraversal(); 893 } 894 } 895 896 int getHostVisibility() { 897 return mAppVisible ? mView.getVisibility() : View.GONE; 898 } 899 900 void disposeResizeBuffer() { 901 if (mResizeBuffer != null) { 902 mResizeBuffer.destroy(); 903 mResizeBuffer = null; 904 } 905 } 906 907 /** 908 * Add LayoutTransition to the list of transitions to be started in the next traversal. 909 * This list will be cleared after the transitions on the list are start()'ed. These 910 * transitionsa re added by LayoutTransition itself when it sets up animations. The setup 911 * happens during the layout phase of traversal, which we want to complete before any of the 912 * animations are started (because those animations may side-effect properties that layout 913 * depends upon, like the bounding rectangles of the affected views). So we add the transition 914 * to the list and it is started just prior to starting the drawing phase of traversal. 915 * 916 * @param transition The LayoutTransition to be started on the next traversal. 917 * 918 * @hide 919 */ 920 public void requestTransitionStart(LayoutTransition transition) { 921 if (mPendingTransitions == null || !mPendingTransitions.contains(transition)) { 922 if (mPendingTransitions == null) { 923 mPendingTransitions = new ArrayList<LayoutTransition>(); 924 } 925 mPendingTransitions.add(transition); 926 } 927 } 928 929 private void doTraversal() { 930 if (mProfile) { 931 Debug.startMethodTracing("ViewAncestor"); 932 } 933 934 final long traversalStartTime; 935 if (ViewDebug.DEBUG_LATENCY) { 936 traversalStartTime = System.nanoTime(); 937 if (mLastTraversalFinishedTimeNanos != 0) { 938 Log.d(ViewDebug.DEBUG_LATENCY_TAG, "Starting performTraversals(); it has been " 939 + ((traversalStartTime - mLastTraversalFinishedTimeNanos) * 0.000001f) 940 + "ms since the last traversals finished."); 941 } else { 942 Log.d(ViewDebug.DEBUG_LATENCY_TAG, "Starting performTraversals()."); 943 } 944 } 945 946 performTraversals(); 947 948 if (ViewDebug.DEBUG_LATENCY) { 949 long now = System.nanoTime(); 950 Log.d(ViewDebug.DEBUG_LATENCY_TAG, "performTraversals() took " 951 + ((now - traversalStartTime) * 0.000001f) 952 + "ms."); 953 mLastTraversalFinishedTimeNanos = now; 954 } 955 956 if (mProfile) { 957 Debug.stopMethodTracing(); 958 mProfile = false; 959 } 960 } 961 962 private void performTraversals() { 963 // cache mView since it is used so much below... 964 final View host = mView; 965 966 if (DBG) { 967 System.out.println("======================================"); 968 System.out.println("performTraversals"); 969 host.debug(); 970 } 971 972 if (host == null || !mAdded) 973 return; 974 975 mWillDrawSoon = true; 976 boolean windowSizeMayChange = false; 977 boolean newSurface = false; 978 boolean surfaceChanged = false; 979 WindowManager.LayoutParams lp = mWindowAttributes; 980 981 int desiredWindowWidth; 982 int desiredWindowHeight; 983 int childWidthMeasureSpec; 984 int childHeightMeasureSpec; 985 986 final View.AttachInfo attachInfo = mAttachInfo; 987 988 final int viewVisibility = getHostVisibility(); 989 boolean viewVisibilityChanged = mViewVisibility != viewVisibility 990 || mNewSurfaceNeeded; 991 992 WindowManager.LayoutParams params = null; 993 if (mWindowAttributesChanged) { 994 mWindowAttributesChanged = false; 995 surfaceChanged = true; 996 params = lp; 997 } 998 CompatibilityInfo compatibilityInfo = mCompatibilityInfo.get(); 999 if (compatibilityInfo.supportsScreen() == mLastInCompatMode) { 1000 params = lp; 1001 mFullRedrawNeeded = true; 1002 mLayoutRequested = true; 1003 if (mLastInCompatMode) { 1004 params.flags &= ~WindowManager.LayoutParams.FLAG_COMPATIBLE_WINDOW; 1005 mLastInCompatMode = false; 1006 } else { 1007 params.flags |= WindowManager.LayoutParams.FLAG_COMPATIBLE_WINDOW; 1008 mLastInCompatMode = true; 1009 } 1010 } 1011 1012 mWindowAttributesChangesFlag = 0; 1013 1014 Rect frame = mWinFrame; 1015 if (mFirst) { 1016 mFullRedrawNeeded = true; 1017 mLayoutRequested = true; 1018 1019 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL) { 1020 // NOTE -- system code, won't try to do compat mode. 1021 Display disp = WindowManagerImpl.getDefault().getDefaultDisplay(); 1022 Point size = new Point(); 1023 disp.getRealSize(size); 1024 desiredWindowWidth = size.x; 1025 desiredWindowHeight = size.y; 1026 } else { 1027 DisplayMetrics packageMetrics = 1028 mView.getContext().getResources().getDisplayMetrics(); 1029 desiredWindowWidth = packageMetrics.widthPixels; 1030 desiredWindowHeight = packageMetrics.heightPixels; 1031 } 1032 1033 // For the very first time, tell the view hierarchy that it 1034 // is attached to the window. Note that at this point the surface 1035 // object is not initialized to its backing store, but soon it 1036 // will be (assuming the window is visible). 1037 attachInfo.mSurface = mSurface; 1038 // We used to use the following condition to choose 32 bits drawing caches: 1039 // PixelFormat.hasAlpha(lp.format) || lp.format == PixelFormat.RGBX_8888 1040 // However, windows are now always 32 bits by default, so choose 32 bits 1041 attachInfo.mUse32BitDrawingCache = true; 1042 attachInfo.mHasWindowFocus = false; 1043 attachInfo.mWindowVisibility = viewVisibility; 1044 attachInfo.mRecomputeGlobalAttributes = false; 1045 attachInfo.mKeepScreenOn = false; 1046 attachInfo.mSystemUiVisibility = 0; 1047 viewVisibilityChanged = false; 1048 mLastConfiguration.setTo(host.getResources().getConfiguration()); 1049 host.dispatchAttachedToWindow(attachInfo, 0); 1050 //Log.i(TAG, "Screen on initialized: " + attachInfo.mKeepScreenOn); 1051 1052 host.fitSystemWindows(mAttachInfo.mContentInsets); 1053 1054 } else { 1055 desiredWindowWidth = frame.width(); 1056 desiredWindowHeight = frame.height(); 1057 if (desiredWindowWidth != mWidth || desiredWindowHeight != mHeight) { 1058 if (DEBUG_ORIENTATION) Log.v(TAG, 1059 "View " + host + " resized to: " + frame); 1060 mFullRedrawNeeded = true; 1061 mLayoutRequested = true; 1062 windowSizeMayChange = true; 1063 } 1064 } 1065 1066 if (viewVisibilityChanged) { 1067 attachInfo.mWindowVisibility = viewVisibility; 1068 host.dispatchWindowVisibilityChanged(viewVisibility); 1069 if (viewVisibility != View.VISIBLE || mNewSurfaceNeeded) { 1070 destroyHardwareResources(); 1071 } 1072 if (viewVisibility == View.GONE) { 1073 // After making a window gone, we will count it as being 1074 // shown for the first time the next time it gets focus. 1075 mHasHadWindowFocus = false; 1076 } 1077 } 1078 1079 boolean insetsChanged = false; 1080 1081 if (mLayoutRequested && !mStopped) { 1082 // Execute enqueued actions on every layout in case a view that was detached 1083 // enqueued an action after being detached 1084 getRunQueue().executeActions(attachInfo.mHandler); 1085 1086 final Resources res = mView.getContext().getResources(); 1087 1088 if (mFirst) { 1089 // make sure touch mode code executes by setting cached value 1090 // to opposite of the added touch mode. 1091 mAttachInfo.mInTouchMode = !mAddedTouchMode; 1092 ensureTouchModeLocally(mAddedTouchMode); 1093 } else { 1094 if (!mPendingContentInsets.equals(mAttachInfo.mContentInsets)) { 1095 insetsChanged = true; 1096 } 1097 if (!mPendingVisibleInsets.equals(mAttachInfo.mVisibleInsets)) { 1098 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1099 if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: " 1100 + mAttachInfo.mVisibleInsets); 1101 } 1102 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT 1103 || lp.height == ViewGroup.LayoutParams.WRAP_CONTENT) { 1104 windowSizeMayChange = true; 1105 1106 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL) { 1107 // NOTE -- system code, won't try to do compat mode. 1108 Display disp = WindowManagerImpl.getDefault().getDefaultDisplay(); 1109 Point size = new Point(); 1110 disp.getRealSize(size); 1111 desiredWindowWidth = size.x; 1112 desiredWindowHeight = size.y; 1113 } else { 1114 DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1115 desiredWindowWidth = packageMetrics.widthPixels; 1116 desiredWindowHeight = packageMetrics.heightPixels; 1117 } 1118 } 1119 } 1120 1121 // Ask host how big it wants to be 1122 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) Log.v(TAG, 1123 "Measuring " + host + " in display " + desiredWindowWidth 1124 + "x" + desiredWindowHeight + "..."); 1125 1126 boolean goodMeasure = false; 1127 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT) { 1128 // On large screens, we don't want to allow dialogs to just 1129 // stretch to fill the entire width of the screen to display 1130 // one line of text. First try doing the layout at a smaller 1131 // size to see if it will fit. 1132 final DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1133 res.getValue(com.android.internal.R.dimen.config_prefDialogWidth, mTmpValue, true); 1134 int baseSize = 0; 1135 if (mTmpValue.type == TypedValue.TYPE_DIMENSION) { 1136 baseSize = (int)mTmpValue.getDimension(packageMetrics); 1137 } 1138 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": baseSize=" + baseSize); 1139 if (baseSize != 0 && desiredWindowWidth > baseSize) { 1140 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1141 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1142 host.measure(childWidthMeasureSpec, childHeightMeasureSpec); 1143 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": measured (" 1144 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1145 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1146 goodMeasure = true; 1147 } else { 1148 // Didn't fit in that size... try expanding a bit. 1149 baseSize = (baseSize+desiredWindowWidth)/2; 1150 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": next baseSize=" 1151 + baseSize); 1152 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1153 host.measure(childWidthMeasureSpec, childHeightMeasureSpec); 1154 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": measured (" 1155 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1156 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1157 if (DEBUG_DIALOG) Log.v(TAG, "Good!"); 1158 goodMeasure = true; 1159 } 1160 } 1161 } 1162 } 1163 1164 if (!goodMeasure) { 1165 childWidthMeasureSpec = getRootMeasureSpec(desiredWindowWidth, lp.width); 1166 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1167 host.measure(childWidthMeasureSpec, childHeightMeasureSpec); 1168 if (mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) { 1169 windowSizeMayChange = true; 1170 } 1171 } 1172 1173 if (DBG) { 1174 System.out.println("======================================"); 1175 System.out.println("performTraversals -- after measure"); 1176 host.debug(); 1177 } 1178 } 1179 1180 if (attachInfo.mRecomputeGlobalAttributes && host.mAttachInfo != null) { 1181 //Log.i(TAG, "Computing view hierarchy attributes!"); 1182 attachInfo.mRecomputeGlobalAttributes = false; 1183 boolean oldScreenOn = attachInfo.mKeepScreenOn; 1184 int oldVis = attachInfo.mSystemUiVisibility; 1185 boolean oldHasSystemUiListeners = attachInfo.mHasSystemUiListeners; 1186 attachInfo.mKeepScreenOn = false; 1187 attachInfo.mSystemUiVisibility = 0; 1188 attachInfo.mHasSystemUiListeners = false; 1189 host.dispatchCollectViewAttributes(0); 1190 if (attachInfo.mKeepScreenOn != oldScreenOn 1191 || attachInfo.mSystemUiVisibility != oldVis 1192 || attachInfo.mHasSystemUiListeners != oldHasSystemUiListeners) { 1193 params = lp; 1194 } 1195 } 1196 if (attachInfo.mForceReportNewAttributes) { 1197 attachInfo.mForceReportNewAttributes = false; 1198 params = lp; 1199 } 1200 1201 if (mFirst || attachInfo.mViewVisibilityChanged) { 1202 attachInfo.mViewVisibilityChanged = false; 1203 int resizeMode = mSoftInputMode & 1204 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST; 1205 // If we are in auto resize mode, then we need to determine 1206 // what mode to use now. 1207 if (resizeMode == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 1208 final int N = attachInfo.mScrollContainers.size(); 1209 for (int i=0; i<N; i++) { 1210 if (attachInfo.mScrollContainers.get(i).isShown()) { 1211 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE; 1212 } 1213 } 1214 if (resizeMode == 0) { 1215 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_PAN; 1216 } 1217 if ((lp.softInputMode & 1218 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) != resizeMode) { 1219 lp.softInputMode = (lp.softInputMode & 1220 ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) | 1221 resizeMode; 1222 params = lp; 1223 } 1224 } 1225 } 1226 1227 if (params != null && (host.mPrivateFlags & View.REQUEST_TRANSPARENT_REGIONS) != 0) { 1228 if (!PixelFormat.formatHasAlpha(params.format)) { 1229 params.format = PixelFormat.TRANSLUCENT; 1230 } 1231 } 1232 1233 boolean windowShouldResize = mLayoutRequested && windowSizeMayChange 1234 && ((mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) 1235 || (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT && 1236 frame.width() < desiredWindowWidth && frame.width() != mWidth) 1237 || (lp.height == ViewGroup.LayoutParams.WRAP_CONTENT && 1238 frame.height() < desiredWindowHeight && frame.height() != mHeight)); 1239 1240 final boolean computesInternalInsets = 1241 attachInfo.mTreeObserver.hasComputeInternalInsetsListeners(); 1242 1243 boolean insetsPending = false; 1244 int relayoutResult = 0; 1245 1246 if (mFirst || windowShouldResize || insetsChanged || 1247 viewVisibilityChanged || params != null) { 1248 1249 if (viewVisibility == View.VISIBLE) { 1250 // If this window is giving internal insets to the window 1251 // manager, and it is being added or changing its visibility, 1252 // then we want to first give the window manager "fake" 1253 // insets to cause it to effectively ignore the content of 1254 // the window during layout. This avoids it briefly causing 1255 // other windows to resize/move based on the raw frame of the 1256 // window, waiting until we can finish laying out this window 1257 // and get back to the window manager with the ultimately 1258 // computed insets. 1259 insetsPending = computesInternalInsets && (mFirst || viewVisibilityChanged); 1260 } 1261 1262 if (mSurfaceHolder != null) { 1263 mSurfaceHolder.mSurfaceLock.lock(); 1264 mDrawingAllowed = true; 1265 } 1266 1267 boolean hwInitialized = false; 1268 boolean contentInsetsChanged = false; 1269 boolean visibleInsetsChanged; 1270 boolean hadSurface = mSurface.isValid(); 1271 1272 try { 1273 int fl = 0; 1274 if (params != null) { 1275 fl = params.flags; 1276 if (attachInfo.mKeepScreenOn) { 1277 params.flags |= WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON; 1278 } 1279 params.subtreeSystemUiVisibility = attachInfo.mSystemUiVisibility; 1280 params.hasSystemUiListeners = attachInfo.mHasSystemUiListeners; 1281 } 1282 if (DEBUG_LAYOUT) { 1283 Log.i(TAG, "host=w:" + host.getMeasuredWidth() + ", h:" + 1284 host.getMeasuredHeight() + ", params=" + params); 1285 } 1286 1287 final int surfaceGenerationId = mSurface.getGenerationId(); 1288 relayoutResult = relayoutWindow(params, viewVisibility, insetsPending); 1289 1290 if (params != null) { 1291 params.flags = fl; 1292 } 1293 1294 if (DEBUG_LAYOUT) Log.v(TAG, "relayout: frame=" + frame.toShortString() 1295 + " content=" + mPendingContentInsets.toShortString() 1296 + " visible=" + mPendingVisibleInsets.toShortString() 1297 + " surface=" + mSurface); 1298 1299 if (mPendingConfiguration.seq != 0) { 1300 if (DEBUG_CONFIGURATION) Log.v(TAG, "Visible with new config: " 1301 + mPendingConfiguration); 1302 updateConfiguration(mPendingConfiguration, !mFirst); 1303 mPendingConfiguration.seq = 0; 1304 } 1305 1306 contentInsetsChanged = !mPendingContentInsets.equals( 1307 mAttachInfo.mContentInsets); 1308 visibleInsetsChanged = !mPendingVisibleInsets.equals( 1309 mAttachInfo.mVisibleInsets); 1310 if (contentInsetsChanged) { 1311 if (mWidth > 0 && mHeight > 0 && 1312 mSurface != null && mSurface.isValid() && 1313 !mAttachInfo.mTurnOffWindowResizeAnim && 1314 mAttachInfo.mHardwareRenderer != null && 1315 mAttachInfo.mHardwareRenderer.isEnabled() && 1316 mAttachInfo.mHardwareRenderer.validate() && 1317 lp != null && !PixelFormat.formatHasAlpha(lp.format)) { 1318 1319 disposeResizeBuffer(); 1320 1321 boolean completed = false; 1322 HardwareCanvas hwRendererCanvas = mAttachInfo.mHardwareRenderer.getCanvas(); 1323 HardwareCanvas layerCanvas = null; 1324 try { 1325 if (mResizeBuffer == null) { 1326 mResizeBuffer = mAttachInfo.mHardwareRenderer.createHardwareLayer( 1327 mWidth, mHeight, false); 1328 } else if (mResizeBuffer.getWidth() != mWidth || 1329 mResizeBuffer.getHeight() != mHeight) { 1330 mResizeBuffer.resize(mWidth, mHeight); 1331 } 1332 layerCanvas = mResizeBuffer.start(hwRendererCanvas); 1333 layerCanvas.setViewport(mWidth, mHeight); 1334 layerCanvas.onPreDraw(null); 1335 final int restoreCount = layerCanvas.save(); 1336 1337 layerCanvas.drawColor(0xff000000, PorterDuff.Mode.SRC); 1338 1339 int yoff; 1340 final boolean scrolling = mScroller != null 1341 && mScroller.computeScrollOffset(); 1342 if (scrolling) { 1343 yoff = mScroller.getCurrY(); 1344 mScroller.abortAnimation(); 1345 } else { 1346 yoff = mScrollY; 1347 } 1348 1349 layerCanvas.translate(0, -yoff); 1350 if (mTranslator != null) { 1351 mTranslator.translateCanvas(layerCanvas); 1352 } 1353 1354 mView.draw(layerCanvas); 1355 1356 mResizeBufferStartTime = SystemClock.uptimeMillis(); 1357 mResizeBufferDuration = mView.getResources().getInteger( 1358 com.android.internal.R.integer.config_mediumAnimTime); 1359 completed = true; 1360 1361 layerCanvas.restoreToCount(restoreCount); 1362 } catch (OutOfMemoryError e) { 1363 Log.w(TAG, "Not enough memory for content change anim buffer", e); 1364 } finally { 1365 if (layerCanvas != null) { 1366 layerCanvas.onPostDraw(); 1367 } 1368 if (mResizeBuffer != null) { 1369 mResizeBuffer.end(hwRendererCanvas); 1370 if (!completed) { 1371 mResizeBuffer.destroy(); 1372 mResizeBuffer = null; 1373 } 1374 } 1375 } 1376 } 1377 mAttachInfo.mContentInsets.set(mPendingContentInsets); 1378 host.fitSystemWindows(mAttachInfo.mContentInsets); 1379 if (DEBUG_LAYOUT) Log.v(TAG, "Content insets changing to: " 1380 + mAttachInfo.mContentInsets); 1381 } 1382 if (visibleInsetsChanged) { 1383 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1384 if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: " 1385 + mAttachInfo.mVisibleInsets); 1386 } 1387 1388 if (!hadSurface) { 1389 if (mSurface.isValid()) { 1390 // If we are creating a new surface, then we need to 1391 // completely redraw it. Also, when we get to the 1392 // point of drawing it we will hold off and schedule 1393 // a new traversal instead. This is so we can tell the 1394 // window manager about all of the windows being displayed 1395 // before actually drawing them, so it can display then 1396 // all at once. 1397 newSurface = true; 1398 mFullRedrawNeeded = true; 1399 mPreviousTransparentRegion.setEmpty(); 1400 1401 if (mAttachInfo.mHardwareRenderer != null) { 1402 try { 1403 hwInitialized = mAttachInfo.mHardwareRenderer.initialize(mHolder); 1404 } catch (Surface.OutOfResourcesException e) { 1405 Log.e(TAG, "OutOfResourcesException initializing HW surface", e); 1406 try { 1407 if (!sWindowSession.outOfMemory(mWindow)) { 1408 Slog.w(TAG, "No processes killed for memory; killing self"); 1409 Process.killProcess(Process.myPid()); 1410 } 1411 } catch (RemoteException ex) { 1412 } 1413 mLayoutRequested = true; // ask wm for a new surface next time. 1414 return; 1415 } 1416 } 1417 } 1418 } else if (!mSurface.isValid()) { 1419 // If the surface has been removed, then reset the scroll 1420 // positions. 1421 mLastScrolledFocus = null; 1422 mScrollY = mCurScrollY = 0; 1423 if (mScroller != null) { 1424 mScroller.abortAnimation(); 1425 } 1426 disposeResizeBuffer(); 1427 // Our surface is gone 1428 if (mAttachInfo.mHardwareRenderer != null && 1429 mAttachInfo.mHardwareRenderer.isEnabled()) { 1430 mAttachInfo.mHardwareRenderer.destroy(true); 1431 } 1432 } else if (surfaceGenerationId != mSurface.getGenerationId() && 1433 mSurfaceHolder == null && mAttachInfo.mHardwareRenderer != null) { 1434 mFullRedrawNeeded = true; 1435 try { 1436 mAttachInfo.mHardwareRenderer.updateSurface(mHolder); 1437 } catch (Surface.OutOfResourcesException e) { 1438 Log.e(TAG, "OutOfResourcesException updating HW surface", e); 1439 try { 1440 if (!sWindowSession.outOfMemory(mWindow)) { 1441 Slog.w(TAG, "No processes killed for memory; killing self"); 1442 Process.killProcess(Process.myPid()); 1443 } 1444 } catch (RemoteException ex) { 1445 } 1446 mLayoutRequested = true; // ask wm for a new surface next time. 1447 return; 1448 } 1449 } 1450 } catch (RemoteException e) { 1451 } 1452 1453 if (DEBUG_ORIENTATION) Log.v( 1454 TAG, "Relayout returned: frame=" + frame + ", surface=" + mSurface); 1455 1456 attachInfo.mWindowLeft = frame.left; 1457 attachInfo.mWindowTop = frame.top; 1458 1459 // !!FIXME!! This next section handles the case where we did not get the 1460 // window size we asked for. We should avoid this by getting a maximum size from 1461 // the window session beforehand. 1462 mWidth = frame.width(); 1463 mHeight = frame.height(); 1464 1465 if (mSurfaceHolder != null) { 1466 // The app owns the surface; tell it about what is going on. 1467 if (mSurface.isValid()) { 1468 // XXX .copyFrom() doesn't work! 1469 //mSurfaceHolder.mSurface.copyFrom(mSurface); 1470 mSurfaceHolder.mSurface = mSurface; 1471 } 1472 mSurfaceHolder.setSurfaceFrameSize(mWidth, mHeight); 1473 mSurfaceHolder.mSurfaceLock.unlock(); 1474 if (mSurface.isValid()) { 1475 if (!hadSurface) { 1476 mSurfaceHolder.ungetCallbacks(); 1477 1478 mIsCreating = true; 1479 mSurfaceHolderCallback.surfaceCreated(mSurfaceHolder); 1480 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1481 if (callbacks != null) { 1482 for (SurfaceHolder.Callback c : callbacks) { 1483 c.surfaceCreated(mSurfaceHolder); 1484 } 1485 } 1486 surfaceChanged = true; 1487 } 1488 if (surfaceChanged) { 1489 mSurfaceHolderCallback.surfaceChanged(mSurfaceHolder, 1490 lp.format, mWidth, mHeight); 1491 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1492 if (callbacks != null) { 1493 for (SurfaceHolder.Callback c : callbacks) { 1494 c.surfaceChanged(mSurfaceHolder, lp.format, 1495 mWidth, mHeight); 1496 } 1497 } 1498 } 1499 mIsCreating = false; 1500 } else if (hadSurface) { 1501 mSurfaceHolder.ungetCallbacks(); 1502 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1503 mSurfaceHolderCallback.surfaceDestroyed(mSurfaceHolder); 1504 if (callbacks != null) { 1505 for (SurfaceHolder.Callback c : callbacks) { 1506 c.surfaceDestroyed(mSurfaceHolder); 1507 } 1508 } 1509 mSurfaceHolder.mSurfaceLock.lock(); 1510 try { 1511 mSurfaceHolder.mSurface = new Surface(); 1512 } finally { 1513 mSurfaceHolder.mSurfaceLock.unlock(); 1514 } 1515 } 1516 } 1517 1518 if (mAttachInfo.mHardwareRenderer != null && 1519 mAttachInfo.mHardwareRenderer.isEnabled()) { 1520 if (hwInitialized || windowShouldResize || 1521 mWidth != mAttachInfo.mHardwareRenderer.getWidth() || 1522 mHeight != mAttachInfo.mHardwareRenderer.getHeight()) { 1523 mAttachInfo.mHardwareRenderer.setup(mWidth, mHeight); 1524 if (!hwInitialized) { 1525 mAttachInfo.mHardwareRenderer.invalidate(mHolder); 1526 } 1527 } 1528 } 1529 1530 if (!mStopped) { 1531 boolean focusChangedDueToTouchMode = ensureTouchModeLocally( 1532 (relayoutResult&WindowManagerImpl.RELAYOUT_RES_IN_TOUCH_MODE) != 0); 1533 if (focusChangedDueToTouchMode || mWidth != host.getMeasuredWidth() 1534 || mHeight != host.getMeasuredHeight() || contentInsetsChanged) { 1535 childWidthMeasureSpec = getRootMeasureSpec(mWidth, lp.width); 1536 childHeightMeasureSpec = getRootMeasureSpec(mHeight, lp.height); 1537 1538 if (DEBUG_LAYOUT) Log.v(TAG, "Ooops, something changed! mWidth=" 1539 + mWidth + " measuredWidth=" + host.getMeasuredWidth() 1540 + " mHeight=" + mHeight 1541 + " measuredHeight=" + host.getMeasuredHeight() 1542 + " coveredInsetsChanged=" + contentInsetsChanged); 1543 1544 // Ask host how big it wants to be 1545 host.measure(childWidthMeasureSpec, childHeightMeasureSpec); 1546 1547 // Implementation of weights from WindowManager.LayoutParams 1548 // We just grow the dimensions as needed and re-measure if 1549 // needs be 1550 int width = host.getMeasuredWidth(); 1551 int height = host.getMeasuredHeight(); 1552 boolean measureAgain = false; 1553 1554 if (lp.horizontalWeight > 0.0f) { 1555 width += (int) ((mWidth - width) * lp.horizontalWeight); 1556 childWidthMeasureSpec = MeasureSpec.makeMeasureSpec(width, 1557 MeasureSpec.EXACTLY); 1558 measureAgain = true; 1559 } 1560 if (lp.verticalWeight > 0.0f) { 1561 height += (int) ((mHeight - height) * lp.verticalWeight); 1562 childHeightMeasureSpec = MeasureSpec.makeMeasureSpec(height, 1563 MeasureSpec.EXACTLY); 1564 measureAgain = true; 1565 } 1566 1567 if (measureAgain) { 1568 if (DEBUG_LAYOUT) Log.v(TAG, 1569 "And hey let's measure once more: width=" + width 1570 + " height=" + height); 1571 host.measure(childWidthMeasureSpec, childHeightMeasureSpec); 1572 } 1573 1574 mLayoutRequested = true; 1575 } 1576 } 1577 } 1578 1579 final boolean didLayout = mLayoutRequested && !mStopped; 1580 boolean triggerGlobalLayoutListener = didLayout 1581 || attachInfo.mRecomputeGlobalAttributes; 1582 if (didLayout) { 1583 mLayoutRequested = false; 1584 mScrollMayChange = true; 1585 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) Log.v( 1586 TAG, "Laying out " + host + " to (" + 1587 host.getMeasuredWidth() + ", " + host.getMeasuredHeight() + ")"); 1588 long startTime = 0L; 1589 if (ViewDebug.DEBUG_PROFILE_LAYOUT) { 1590 startTime = SystemClock.elapsedRealtime(); 1591 } 1592 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 1593 1594 if (false && ViewDebug.consistencyCheckEnabled) { 1595 if (!host.dispatchConsistencyCheck(ViewDebug.CONSISTENCY_LAYOUT)) { 1596 throw new IllegalStateException("The view hierarchy is an inconsistent state," 1597 + "please refer to the logs with the tag " 1598 + ViewDebug.CONSISTENCY_LOG_TAG + " for more infomation."); 1599 } 1600 } 1601 1602 if (ViewDebug.DEBUG_PROFILE_LAYOUT) { 1603 EventLog.writeEvent(60001, SystemClock.elapsedRealtime() - startTime); 1604 } 1605 1606 // By this point all views have been sized and positionned 1607 // We can compute the transparent area 1608 1609 if ((host.mPrivateFlags & View.REQUEST_TRANSPARENT_REGIONS) != 0) { 1610 // start out transparent 1611 // TODO: AVOID THAT CALL BY CACHING THE RESULT? 1612 host.getLocationInWindow(mTmpLocation); 1613 mTransparentRegion.set(mTmpLocation[0], mTmpLocation[1], 1614 mTmpLocation[0] + host.mRight - host.mLeft, 1615 mTmpLocation[1] + host.mBottom - host.mTop); 1616 1617 host.gatherTransparentRegion(mTransparentRegion); 1618 if (mTranslator != null) { 1619 mTranslator.translateRegionInWindowToScreen(mTransparentRegion); 1620 } 1621 1622 if (!mTransparentRegion.equals(mPreviousTransparentRegion)) { 1623 mPreviousTransparentRegion.set(mTransparentRegion); 1624 // reconfigure window manager 1625 try { 1626 sWindowSession.setTransparentRegion(mWindow, mTransparentRegion); 1627 } catch (RemoteException e) { 1628 } 1629 } 1630 } 1631 1632 if (DBG) { 1633 System.out.println("======================================"); 1634 System.out.println("performTraversals -- after setFrame"); 1635 host.debug(); 1636 } 1637 } 1638 1639 if (triggerGlobalLayoutListener) { 1640 attachInfo.mRecomputeGlobalAttributes = false; 1641 attachInfo.mTreeObserver.dispatchOnGlobalLayout(); 1642 1643 if (AccessibilityManager.getInstance(host.mContext).isEnabled()) { 1644 postSendWindowContentChangedCallback(); 1645 } 1646 } 1647 1648 if (computesInternalInsets) { 1649 // Clear the original insets. 1650 final ViewTreeObserver.InternalInsetsInfo insets = attachInfo.mGivenInternalInsets; 1651 insets.reset(); 1652 1653 // Compute new insets in place. 1654 attachInfo.mTreeObserver.dispatchOnComputeInternalInsets(insets); 1655 1656 // Tell the window manager. 1657 if (insetsPending || !mLastGivenInsets.equals(insets)) { 1658 mLastGivenInsets.set(insets); 1659 1660 // Translate insets to screen coordinates if needed. 1661 final Rect contentInsets; 1662 final Rect visibleInsets; 1663 final Region touchableRegion; 1664 if (mTranslator != null) { 1665 contentInsets = mTranslator.getTranslatedContentInsets(insets.contentInsets); 1666 visibleInsets = mTranslator.getTranslatedVisibleInsets(insets.visibleInsets); 1667 touchableRegion = mTranslator.getTranslatedTouchableArea(insets.touchableRegion); 1668 } else { 1669 contentInsets = insets.contentInsets; 1670 visibleInsets = insets.visibleInsets; 1671 touchableRegion = insets.touchableRegion; 1672 } 1673 1674 try { 1675 sWindowSession.setInsets(mWindow, insets.mTouchableInsets, 1676 contentInsets, visibleInsets, touchableRegion); 1677 } catch (RemoteException e) { 1678 } 1679 } 1680 } 1681 1682 if (mFirst) { 1683 // handle first focus request 1684 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: mView.hasFocus()=" 1685 + mView.hasFocus()); 1686 if (mView != null) { 1687 if (!mView.hasFocus()) { 1688 mView.requestFocus(View.FOCUS_FORWARD); 1689 mFocusedView = mRealFocusedView = mView.findFocus(); 1690 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: requested focused view=" 1691 + mFocusedView); 1692 } else { 1693 mRealFocusedView = mView.findFocus(); 1694 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: existing focused view=" 1695 + mRealFocusedView); 1696 } 1697 } 1698 } 1699 1700 mFirst = false; 1701 mWillDrawSoon = false; 1702 mNewSurfaceNeeded = false; 1703 mViewVisibility = viewVisibility; 1704 1705 if (mAttachInfo.mHasWindowFocus) { 1706 final boolean imTarget = WindowManager.LayoutParams 1707 .mayUseInputMethod(mWindowAttributes.flags); 1708 if (imTarget != mLastWasImTarget) { 1709 mLastWasImTarget = imTarget; 1710 InputMethodManager imm = InputMethodManager.peekInstance(); 1711 if (imm != null && imTarget) { 1712 imm.startGettingWindowFocus(mView); 1713 imm.onWindowFocus(mView, mView.findFocus(), 1714 mWindowAttributes.softInputMode, 1715 !mHasHadWindowFocus, mWindowAttributes.flags); 1716 } 1717 } 1718 } 1719 1720 // Remember if we must report the next draw. 1721 if ((relayoutResult & WindowManagerImpl.RELAYOUT_RES_FIRST_TIME) != 0) { 1722 mReportNextDraw = true; 1723 } 1724 1725 boolean cancelDraw = attachInfo.mTreeObserver.dispatchOnPreDraw() || 1726 viewVisibility != View.VISIBLE; 1727 1728 if (!cancelDraw && !newSurface) { 1729 if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 1730 for (int i = 0; i < mPendingTransitions.size(); ++i) { 1731 mPendingTransitions.get(i).startChangingAnimations(); 1732 } 1733 mPendingTransitions.clear(); 1734 } 1735 1736 performDraw(); 1737 } else { 1738 // End any pending transitions on this non-visible window 1739 if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 1740 for (int i = 0; i < mPendingTransitions.size(); ++i) { 1741 mPendingTransitions.get(i).endChangingAnimations(); 1742 } 1743 mPendingTransitions.clear(); 1744 } 1745 1746 if (viewVisibility == View.VISIBLE) { 1747 // Try again 1748 scheduleTraversals(); 1749 } 1750 } 1751 } 1752 1753 public void requestTransparentRegion(View child) { 1754 // the test below should not fail unless someone is messing with us 1755 checkThread(); 1756 if (mView == child) { 1757 mView.mPrivateFlags |= View.REQUEST_TRANSPARENT_REGIONS; 1758 // Need to make sure we re-evaluate the window attributes next 1759 // time around, to ensure the window has the correct format. 1760 mWindowAttributesChanged = true; 1761 mWindowAttributesChangesFlag = 0; 1762 requestLayout(); 1763 } 1764 } 1765 1766 /** 1767 * Figures out the measure spec for the root view in a window based on it's 1768 * layout params. 1769 * 1770 * @param windowSize 1771 * The available width or height of the window 1772 * 1773 * @param rootDimension 1774 * The layout params for one dimension (width or height) of the 1775 * window. 1776 * 1777 * @return The measure spec to use to measure the root view. 1778 */ 1779 private int getRootMeasureSpec(int windowSize, int rootDimension) { 1780 int measureSpec; 1781 switch (rootDimension) { 1782 1783 case ViewGroup.LayoutParams.MATCH_PARENT: 1784 // Window can't resize. Force root view to be windowSize. 1785 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.EXACTLY); 1786 break; 1787 case ViewGroup.LayoutParams.WRAP_CONTENT: 1788 // Window can resize. Set max size for root view. 1789 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.AT_MOST); 1790 break; 1791 default: 1792 // Window wants to be an exact size. Force root view to be that size. 1793 measureSpec = MeasureSpec.makeMeasureSpec(rootDimension, MeasureSpec.EXACTLY); 1794 break; 1795 } 1796 return measureSpec; 1797 } 1798 1799 int mHardwareYOffset; 1800 int mResizeAlpha; 1801 final Paint mResizePaint = new Paint(); 1802 1803 public void onHardwarePreDraw(HardwareCanvas canvas) { 1804 canvas.translate(0, -mHardwareYOffset); 1805 } 1806 1807 public void onHardwarePostDraw(HardwareCanvas canvas) { 1808 if (mResizeBuffer != null) { 1809 mResizePaint.setAlpha(mResizeAlpha); 1810 canvas.drawHardwareLayer(mResizeBuffer, 0.0f, mHardwareYOffset, mResizePaint); 1811 } 1812 } 1813 1814 /** 1815 * @hide 1816 */ 1817 void outputDisplayList(View view) { 1818 if (mAttachInfo != null && mAttachInfo.mHardwareCanvas != null) { 1819 DisplayList displayList = view.getDisplayList(); 1820 if (displayList != null) { 1821 mAttachInfo.mHardwareCanvas.outputDisplayList(displayList); 1822 } 1823 } 1824 } 1825 1826 /** 1827 * @see #PROPERTY_PROFILE_RENDERING 1828 */ 1829 private void profileRendering(boolean enabled) { 1830 if (mProfileRendering) { 1831 mRenderProfilingEnabled = enabled; 1832 if (mRenderProfiler == null) { 1833 mRenderProfiler = new Thread(new Runnable() { 1834 @Override 1835 public void run() { 1836 Log.d(TAG, "Starting profiling thread"); 1837 while (mRenderProfilingEnabled) { 1838 mAttachInfo.mHandler.post(new Runnable() { 1839 @Override 1840 public void run() { 1841 mDirty.set(0, 0, mWidth, mHeight); 1842 scheduleTraversals(); 1843 } 1844 }); 1845 try { 1846 // TODO: This should use vsync when we get an API 1847 Thread.sleep(15); 1848 } catch (InterruptedException e) { 1849 Log.d(TAG, "Exiting profiling thread"); 1850 } 1851 } 1852 } 1853 }, "Rendering Profiler"); 1854 mRenderProfiler.start(); 1855 } else { 1856 mRenderProfiler.interrupt(); 1857 mRenderProfiler = null; 1858 } 1859 } 1860 } 1861 1862 /** 1863 * Called from draw() when DEBUG_FPS is enabled 1864 */ 1865 private void trackFPS() { 1866 // Tracks frames per second drawn. First value in a series of draws may be bogus 1867 // because it down not account for the intervening idle time 1868 long nowTime = System.currentTimeMillis(); 1869 if (mFpsStartTime < 0) { 1870 mFpsStartTime = mFpsPrevTime = nowTime; 1871 mFpsNumFrames = 0; 1872 } else { 1873 ++mFpsNumFrames; 1874 String thisHash = Integer.toHexString(System.identityHashCode(this)); 1875 long frameTime = nowTime - mFpsPrevTime; 1876 long totalTime = nowTime - mFpsStartTime; 1877 Log.v(TAG, "0x" + thisHash + "\tFrame time:\t" + frameTime); 1878 mFpsPrevTime = nowTime; 1879 if (totalTime > 1000) { 1880 float fps = (float) mFpsNumFrames * 1000 / totalTime; 1881 Log.v(TAG, "0x" + thisHash + "\tFPS:\t" + fps); 1882 mFpsStartTime = nowTime; 1883 mFpsNumFrames = 0; 1884 } 1885 } 1886 } 1887 1888 private void performDraw() { 1889 final long drawStartTime; 1890 if (ViewDebug.DEBUG_LATENCY) { 1891 drawStartTime = System.nanoTime(); 1892 if (mLastDrawFinishedTimeNanos != 0) { 1893 Log.d(ViewDebug.DEBUG_LATENCY_TAG, "Starting draw(); it has been " 1894 + ((drawStartTime - mLastDrawFinishedTimeNanos) * 0.000001f) 1895 + "ms since the last draw finished."); 1896 } else { 1897 Log.d(ViewDebug.DEBUG_LATENCY_TAG, "Starting draw()."); 1898 } 1899 } 1900 1901 final boolean fullRedrawNeeded = mFullRedrawNeeded; 1902 mFullRedrawNeeded = false; 1903 draw(fullRedrawNeeded); 1904 1905 if (ViewDebug.DEBUG_LATENCY) { 1906 long now = System.nanoTime(); 1907 Log.d(ViewDebug.DEBUG_LATENCY_TAG, "performDraw() took " 1908 + ((now - drawStartTime) * 0.000001f) 1909 + "ms."); 1910 mLastDrawFinishedTimeNanos = now; 1911 } 1912 1913 if (mReportNextDraw) { 1914 mReportNextDraw = false; 1915 1916 if (LOCAL_LOGV) { 1917 Log.v(TAG, "FINISHED DRAWING: " + mWindowAttributes.getTitle()); 1918 } 1919 if (mSurfaceHolder != null && mSurface.isValid()) { 1920 mSurfaceHolderCallback.surfaceRedrawNeeded(mSurfaceHolder); 1921 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1922 if (callbacks != null) { 1923 for (SurfaceHolder.Callback c : callbacks) { 1924 if (c instanceof SurfaceHolder.Callback2) { 1925 ((SurfaceHolder.Callback2)c).surfaceRedrawNeeded( 1926 mSurfaceHolder); 1927 } 1928 } 1929 } 1930 } 1931 try { 1932 sWindowSession.finishDrawing(mWindow); 1933 } catch (RemoteException e) { 1934 } 1935 } 1936 } 1937 1938 private void draw(boolean fullRedrawNeeded) { 1939 Surface surface = mSurface; 1940 if (surface == null || !surface.isValid()) { 1941 return; 1942 } 1943 1944 if (DEBUG_FPS) { 1945 trackFPS(); 1946 } 1947 1948 if (!sFirstDrawComplete) { 1949 synchronized (sFirstDrawHandlers) { 1950 sFirstDrawComplete = true; 1951 final int count = sFirstDrawHandlers.size(); 1952 for (int i = 0; i< count; i++) { 1953 mHandler.post(sFirstDrawHandlers.get(i)); 1954 } 1955 } 1956 } 1957 1958 scrollToRectOrFocus(null, false); 1959 1960 if (mAttachInfo.mViewScrollChanged) { 1961 mAttachInfo.mViewScrollChanged = false; 1962 mAttachInfo.mTreeObserver.dispatchOnScrollChanged(); 1963 } 1964 1965 int yoff; 1966 boolean animating = mScroller != null && mScroller.computeScrollOffset(); 1967 if (animating) { 1968 yoff = mScroller.getCurrY(); 1969 } else { 1970 yoff = mScrollY; 1971 } 1972 if (mCurScrollY != yoff) { 1973 mCurScrollY = yoff; 1974 fullRedrawNeeded = true; 1975 } 1976 1977 final float appScale = mAttachInfo.mApplicationScale; 1978 final boolean scalingRequired = mAttachInfo.mScalingRequired; 1979 1980 int resizeAlpha = 0; 1981 if (mResizeBuffer != null) { 1982 long deltaTime = SystemClock.uptimeMillis() - mResizeBufferStartTime; 1983 if (deltaTime < mResizeBufferDuration) { 1984 float amt = deltaTime/(float) mResizeBufferDuration; 1985 amt = mResizeInterpolator.getInterpolation(amt); 1986 animating = true; 1987 resizeAlpha = 255 - (int)(amt*255); 1988 } else { 1989 disposeResizeBuffer(); 1990 } 1991 } 1992 1993 final Rect dirty = mDirty; 1994 if (mSurfaceHolder != null) { 1995 // The app owns the surface, we won't draw. 1996 dirty.setEmpty(); 1997 if (animating) { 1998 if (mScroller != null) { 1999 mScroller.abortAnimation(); 2000 } 2001 disposeResizeBuffer(); 2002 } 2003 return; 2004 } 2005 2006 if (fullRedrawNeeded) { 2007 mAttachInfo.mIgnoreDirtyState = true; 2008 dirty.set(0, 0, (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 2009 } 2010 2011 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2012 Log.v(TAG, "Draw " + mView + "/" 2013 + mWindowAttributes.getTitle() 2014 + ": dirty={" + dirty.left + "," + dirty.top 2015 + "," + dirty.right + "," + dirty.bottom + "} surface=" 2016 + surface + " surface.isValid()=" + surface.isValid() + ", appScale:" + 2017 appScale + ", width=" + mWidth + ", height=" + mHeight); 2018 } 2019 2020 if (!dirty.isEmpty() || mIsAnimating) { 2021 if (mAttachInfo.mHardwareRenderer != null 2022 && mAttachInfo.mHardwareRenderer.isEnabled()) { 2023 // Draw with hardware renderer. 2024 mIsAnimating = false; 2025 mHardwareYOffset = yoff; 2026 mResizeAlpha = resizeAlpha; 2027 2028 mCurrentDirty.set(dirty); 2029 mCurrentDirty.union(mPreviousDirty); 2030 mPreviousDirty.set(dirty); 2031 dirty.setEmpty(); 2032 2033 if (mAttachInfo.mHardwareRenderer.draw(mView, mAttachInfo, this, 2034 animating ? null : mCurrentDirty)) { 2035 mPreviousDirty.set(0, 0, mWidth, mHeight); 2036 } 2037 } else { 2038 // Draw with software renderer. 2039 Canvas canvas; 2040 try { 2041 int left = dirty.left; 2042 int top = dirty.top; 2043 int right = dirty.right; 2044 int bottom = dirty.bottom; 2045 2046 final long lockCanvasStartTime; 2047 if (ViewDebug.DEBUG_LATENCY) { 2048 lockCanvasStartTime = System.nanoTime(); 2049 } 2050 2051 canvas = mSurface.lockCanvas(dirty); 2052 2053 if (ViewDebug.DEBUG_LATENCY) { 2054 long now = System.nanoTime(); 2055 Log.d(ViewDebug.DEBUG_LATENCY_TAG, "- lockCanvas() took " 2056 + ((now - lockCanvasStartTime) * 0.000001f) + "ms"); 2057 } 2058 2059 if (left != dirty.left || top != dirty.top || right != dirty.right || 2060 bottom != dirty.bottom) { 2061 mAttachInfo.mIgnoreDirtyState = true; 2062 } 2063 2064 // TODO: Do this in native 2065 canvas.setDensity(mDensity); 2066 } catch (Surface.OutOfResourcesException e) { 2067 Log.e(TAG, "OutOfResourcesException locking surface", e); 2068 try { 2069 if (!sWindowSession.outOfMemory(mWindow)) { 2070 Slog.w(TAG, "No processes killed for memory; killing self"); 2071 Process.killProcess(Process.myPid()); 2072 } 2073 } catch (RemoteException ex) { 2074 } 2075 mLayoutRequested = true; // ask wm for a new surface next time. 2076 return; 2077 } catch (IllegalArgumentException e) { 2078 Log.e(TAG, "IllegalArgumentException locking surface", e); 2079 // Don't assume this is due to out of memory, it could be 2080 // something else, and if it is something else then we could 2081 // kill stuff (or ourself) for no reason. 2082 mLayoutRequested = true; // ask wm for a new surface next time. 2083 return; 2084 } 2085 2086 try { 2087 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2088 Log.v(TAG, "Surface " + surface + " drawing to bitmap w=" 2089 + canvas.getWidth() + ", h=" + canvas.getHeight()); 2090 //canvas.drawARGB(255, 255, 0, 0); 2091 } 2092 2093 long startTime = 0L; 2094 if (ViewDebug.DEBUG_PROFILE_DRAWING) { 2095 startTime = SystemClock.elapsedRealtime(); 2096 } 2097 2098 // If this bitmap's format includes an alpha channel, we 2099 // need to clear it before drawing so that the child will 2100 // properly re-composite its drawing on a transparent 2101 // background. This automatically respects the clip/dirty region 2102 // or 2103 // If we are applying an offset, we need to clear the area 2104 // where the offset doesn't appear to avoid having garbage 2105 // left in the blank areas. 2106 if (!canvas.isOpaque() || yoff != 0) { 2107 canvas.drawColor(0, PorterDuff.Mode.CLEAR); 2108 } 2109 2110 dirty.setEmpty(); 2111 mIsAnimating = false; 2112 mAttachInfo.mDrawingTime = SystemClock.uptimeMillis(); 2113 mView.mPrivateFlags |= View.DRAWN; 2114 2115 if (DEBUG_DRAW) { 2116 Context cxt = mView.getContext(); 2117 Log.i(TAG, "Drawing: package:" + cxt.getPackageName() + 2118 ", metrics=" + cxt.getResources().getDisplayMetrics() + 2119 ", compatibilityInfo=" + cxt.getResources().getCompatibilityInfo()); 2120 } 2121 try { 2122 canvas.translate(0, -yoff); 2123 if (mTranslator != null) { 2124 mTranslator.translateCanvas(canvas); 2125 } 2126 canvas.setScreenDensity(scalingRequired 2127 ? DisplayMetrics.DENSITY_DEVICE : 0); 2128 mAttachInfo.mSetIgnoreDirtyState = false; 2129 2130 final long drawStartTime; 2131 if (ViewDebug.DEBUG_LATENCY) { 2132 drawStartTime = System.nanoTime(); 2133 } 2134 2135 mView.draw(canvas); 2136 2137 if (ViewDebug.DEBUG_LATENCY) { 2138 long now = System.nanoTime(); 2139 Log.d(ViewDebug.DEBUG_LATENCY_TAG, "- draw() took " 2140 + ((now - drawStartTime) * 0.000001f) + "ms"); 2141 } 2142 } finally { 2143 if (!mAttachInfo.mSetIgnoreDirtyState) { 2144 // Only clear the flag if it was not set during the mView.draw() call 2145 mAttachInfo.mIgnoreDirtyState = false; 2146 } 2147 } 2148 2149 if (false && ViewDebug.consistencyCheckEnabled) { 2150 mView.dispatchConsistencyCheck(ViewDebug.CONSISTENCY_DRAWING); 2151 } 2152 2153 if (ViewDebug.DEBUG_PROFILE_DRAWING) { 2154 EventLog.writeEvent(60000, SystemClock.elapsedRealtime() - startTime); 2155 } 2156 } finally { 2157 final long unlockCanvasAndPostStartTime; 2158 if (ViewDebug.DEBUG_LATENCY) { 2159 unlockCanvasAndPostStartTime = System.nanoTime(); 2160 } 2161 2162 surface.unlockCanvasAndPost(canvas); 2163 2164 if (ViewDebug.DEBUG_LATENCY) { 2165 long now = System.nanoTime(); 2166 Log.d(ViewDebug.DEBUG_LATENCY_TAG, "- unlockCanvasAndPost() took " 2167 + ((now - unlockCanvasAndPostStartTime) * 0.000001f) + "ms"); 2168 } 2169 2170 if (LOCAL_LOGV) { 2171 Log.v(TAG, "Surface " + surface + " unlockCanvasAndPost"); 2172 } 2173 } 2174 } 2175 } 2176 2177 if (animating) { 2178 mFullRedrawNeeded = true; 2179 scheduleTraversals(); 2180 } 2181 } 2182 2183 boolean scrollToRectOrFocus(Rect rectangle, boolean immediate) { 2184 final View.AttachInfo attachInfo = mAttachInfo; 2185 final Rect ci = attachInfo.mContentInsets; 2186 final Rect vi = attachInfo.mVisibleInsets; 2187 int scrollY = 0; 2188 boolean handled = false; 2189 2190 if (vi.left > ci.left || vi.top > ci.top 2191 || vi.right > ci.right || vi.bottom > ci.bottom) { 2192 // We'll assume that we aren't going to change the scroll 2193 // offset, since we want to avoid that unless it is actually 2194 // going to make the focus visible... otherwise we scroll 2195 // all over the place. 2196 scrollY = mScrollY; 2197 // We can be called for two different situations: during a draw, 2198 // to update the scroll position if the focus has changed (in which 2199 // case 'rectangle' is null), or in response to a 2200 // requestChildRectangleOnScreen() call (in which case 'rectangle' 2201 // is non-null and we just want to scroll to whatever that 2202 // rectangle is). 2203 View focus = mRealFocusedView; 2204 2205 // When in touch mode, focus points to the previously focused view, 2206 // which may have been removed from the view hierarchy. The following 2207 // line checks whether the view is still in our hierarchy. 2208 if (focus == null || focus.mAttachInfo != mAttachInfo) { 2209 mRealFocusedView = null; 2210 return false; 2211 } 2212 2213 if (focus != mLastScrolledFocus) { 2214 // If the focus has changed, then ignore any requests to scroll 2215 // to a rectangle; first we want to make sure the entire focus 2216 // view is visible. 2217 rectangle = null; 2218 } 2219 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Eval scroll: focus=" + focus 2220 + " rectangle=" + rectangle + " ci=" + ci 2221 + " vi=" + vi); 2222 if (focus == mLastScrolledFocus && !mScrollMayChange 2223 && rectangle == null) { 2224 // Optimization: if the focus hasn't changed since last 2225 // time, and no layout has happened, then just leave things 2226 // as they are. 2227 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Keeping scroll y=" 2228 + mScrollY + " vi=" + vi.toShortString()); 2229 } else if (focus != null) { 2230 // We need to determine if the currently focused view is 2231 // within the visible part of the window and, if not, apply 2232 // a pan so it can be seen. 2233 mLastScrolledFocus = focus; 2234 mScrollMayChange = false; 2235 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Need to scroll?"); 2236 // Try to find the rectangle from the focus view. 2237 if (focus.getGlobalVisibleRect(mVisRect, null)) { 2238 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Root w=" 2239 + mView.getWidth() + " h=" + mView.getHeight() 2240 + " ci=" + ci.toShortString() 2241 + " vi=" + vi.toShortString()); 2242 if (rectangle == null) { 2243 focus.getFocusedRect(mTempRect); 2244 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Focus " + focus 2245 + ": focusRect=" + mTempRect.toShortString()); 2246 if (mView instanceof ViewGroup) { 2247 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 2248 focus, mTempRect); 2249 } 2250 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2251 "Focus in window: focusRect=" 2252 + mTempRect.toShortString() 2253 + " visRect=" + mVisRect.toShortString()); 2254 } else { 2255 mTempRect.set(rectangle); 2256 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2257 "Request scroll to rect: " 2258 + mTempRect.toShortString() 2259 + " visRect=" + mVisRect.toShortString()); 2260 } 2261 if (mTempRect.intersect(mVisRect)) { 2262 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2263 "Focus window visible rect: " 2264 + mTempRect.toShortString()); 2265 if (mTempRect.height() > 2266 (mView.getHeight()-vi.top-vi.bottom)) { 2267 // If the focus simply is not going to fit, then 2268 // best is probably just to leave things as-is. 2269 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2270 "Too tall; leaving scrollY=" + scrollY); 2271 } else if ((mTempRect.top-scrollY) < vi.top) { 2272 scrollY -= vi.top - (mTempRect.top-scrollY); 2273 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2274 "Top covered; scrollY=" + scrollY); 2275 } else if ((mTempRect.bottom-scrollY) 2276 > (mView.getHeight()-vi.bottom)) { 2277 scrollY += (mTempRect.bottom-scrollY) 2278 - (mView.getHeight()-vi.bottom); 2279 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2280 "Bottom covered; scrollY=" + scrollY); 2281 } 2282 handled = true; 2283 } 2284 } 2285 } 2286 } 2287 2288 if (scrollY != mScrollY) { 2289 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Pan scroll changed: old=" 2290 + mScrollY + " , new=" + scrollY); 2291 if (!immediate && mResizeBuffer == null) { 2292 if (mScroller == null) { 2293 mScroller = new Scroller(mView.getContext()); 2294 } 2295 mScroller.startScroll(0, mScrollY, 0, scrollY-mScrollY); 2296 } else if (mScroller != null) { 2297 mScroller.abortAnimation(); 2298 } 2299 mScrollY = scrollY; 2300 } 2301 2302 return handled; 2303 } 2304 2305 public void requestChildFocus(View child, View focused) { 2306 checkThread(); 2307 2308 if (DEBUG_INPUT_RESIZE) { 2309 Log.v(TAG, "Request child focus: focus now " + focused); 2310 } 2311 2312 mAttachInfo.mTreeObserver.dispatchOnGlobalFocusChange(mOldFocusedView, focused); 2313 scheduleTraversals(); 2314 2315 mFocusedView = mRealFocusedView = focused; 2316 } 2317 2318 public void clearChildFocus(View child) { 2319 checkThread(); 2320 2321 if (DEBUG_INPUT_RESIZE) { 2322 Log.v(TAG, "Clearing child focus"); 2323 } 2324 2325 mOldFocusedView = mFocusedView; 2326 2327 // Invoke the listener only if there is no view to take focus 2328 if (focusSearch(null, View.FOCUS_FORWARD) == null) { 2329 mAttachInfo.mTreeObserver.dispatchOnGlobalFocusChange(mOldFocusedView, null); 2330 } 2331 2332 mFocusedView = mRealFocusedView = null; 2333 } 2334 2335 public void focusableViewAvailable(View v) { 2336 checkThread(); 2337 2338 if (mView != null) { 2339 if (!mView.hasFocus()) { 2340 v.requestFocus(); 2341 } else { 2342 // the one case where will transfer focus away from the current one 2343 // is if the current view is a view group that prefers to give focus 2344 // to its children first AND the view is a descendant of it. 2345 mFocusedView = mView.findFocus(); 2346 boolean descendantsHaveDibsOnFocus = 2347 (mFocusedView instanceof ViewGroup) && 2348 (((ViewGroup) mFocusedView).getDescendantFocusability() == 2349 ViewGroup.FOCUS_AFTER_DESCENDANTS); 2350 if (descendantsHaveDibsOnFocus && isViewDescendantOf(v, mFocusedView)) { 2351 // If a view gets the focus, the listener will be invoked from requestChildFocus() 2352 v.requestFocus(); 2353 } 2354 } 2355 } 2356 } 2357 2358 public void recomputeViewAttributes(View child) { 2359 checkThread(); 2360 if (mView == child) { 2361 mAttachInfo.mRecomputeGlobalAttributes = true; 2362 if (!mWillDrawSoon) { 2363 scheduleTraversals(); 2364 } 2365 } 2366 } 2367 2368 void dispatchDetachedFromWindow() { 2369 if (mView != null && mView.mAttachInfo != null) { 2370 if (mAttachInfo.mHardwareRenderer != null && 2371 mAttachInfo.mHardwareRenderer.isEnabled()) { 2372 mAttachInfo.mHardwareRenderer.validate(); 2373 } 2374 mView.dispatchDetachedFromWindow(); 2375 } 2376 2377 mAccessibilityInteractionConnectionManager.ensureNoConnection(); 2378 mAccessibilityManager.removeAccessibilityStateChangeListener( 2379 mAccessibilityInteractionConnectionManager); 2380 removeSendWindowContentChangedCallback(); 2381 2382 mView = null; 2383 mAttachInfo.mRootView = null; 2384 mAttachInfo.mSurface = null; 2385 2386 destroyHardwareRenderer(); 2387 2388 mSurface.release(); 2389 2390 if (mInputQueueCallback != null && mInputQueue != null) { 2391 mInputQueueCallback.onInputQueueDestroyed(mInputQueue); 2392 mInputQueueCallback = null; 2393 mInputQueue = null; 2394 } else if (mInputEventReceiver != null) { 2395 mInputEventReceiver.dispose(); 2396 mInputEventReceiver = null; 2397 } 2398 try { 2399 sWindowSession.remove(mWindow); 2400 } catch (RemoteException e) { 2401 } 2402 2403 // Dispose the input channel after removing the window so the Window Manager 2404 // doesn't interpret the input channel being closed as an abnormal termination. 2405 if (mInputChannel != null) { 2406 mInputChannel.dispose(); 2407 mInputChannel = null; 2408 } 2409 2410 unscheduleFrame(); 2411 } 2412 2413 void updateConfiguration(Configuration config, boolean force) { 2414 if (DEBUG_CONFIGURATION) Log.v(TAG, 2415 "Applying new config to window " 2416 + mWindowAttributes.getTitle() 2417 + ": " + config); 2418 2419 CompatibilityInfo ci = mCompatibilityInfo.getIfNeeded(); 2420 if (ci != null) { 2421 config = new Configuration(config); 2422 ci.applyToConfiguration(config); 2423 } 2424 2425 synchronized (sConfigCallbacks) { 2426 for (int i=sConfigCallbacks.size()-1; i>=0; i--) { 2427 sConfigCallbacks.get(i).onConfigurationChanged(config); 2428 } 2429 } 2430 if (mView != null) { 2431 // At this point the resources have been updated to 2432 // have the most recent config, whatever that is. Use 2433 // the on in them which may be newer. 2434 config = mView.getResources().getConfiguration(); 2435 if (force || mLastConfiguration.diff(config) != 0) { 2436 mLastConfiguration.setTo(config); 2437 mView.dispatchConfigurationChanged(config); 2438 } 2439 } 2440 } 2441 2442 /** 2443 * Return true if child is an ancestor of parent, (or equal to the parent). 2444 */ 2445 private static boolean isViewDescendantOf(View child, View parent) { 2446 if (child == parent) { 2447 return true; 2448 } 2449 2450 final ViewParent theParent = child.getParent(); 2451 return (theParent instanceof ViewGroup) && isViewDescendantOf((View) theParent, parent); 2452 } 2453 2454 private static void forceLayout(View view) { 2455 view.forceLayout(); 2456 if (view instanceof ViewGroup) { 2457 ViewGroup group = (ViewGroup) view; 2458 final int count = group.getChildCount(); 2459 for (int i = 0; i < count; i++) { 2460 forceLayout(group.getChildAt(i)); 2461 } 2462 } 2463 } 2464 2465 private final static int MSG_INVALIDATE = 1; 2466 private final static int MSG_INVALIDATE_RECT = 2; 2467 private final static int MSG_DIE = 3; 2468 private final static int MSG_RESIZED = 4; 2469 private final static int MSG_RESIZED_REPORT = 5; 2470 private final static int MSG_WINDOW_FOCUS_CHANGED = 6; 2471 private final static int MSG_DISPATCH_KEY = 7; 2472 private final static int MSG_DISPATCH_APP_VISIBILITY = 8; 2473 private final static int MSG_DISPATCH_GET_NEW_SURFACE = 9; 2474 private final static int MSG_IME_FINISHED_EVENT = 10; 2475 private final static int MSG_DISPATCH_KEY_FROM_IME = 11; 2476 private final static int MSG_FINISH_INPUT_CONNECTION = 12; 2477 private final static int MSG_CHECK_FOCUS = 13; 2478 private final static int MSG_CLOSE_SYSTEM_DIALOGS = 14; 2479 private final static int MSG_DISPATCH_DRAG_EVENT = 15; 2480 private final static int MSG_DISPATCH_DRAG_LOCATION_EVENT = 16; 2481 private final static int MSG_DISPATCH_SYSTEM_UI_VISIBILITY = 17; 2482 private final static int MSG_UPDATE_CONFIGURATION = 18; 2483 private final static int MSG_PERFORM_ACCESSIBILITY_ACTION = 19; 2484 private final static int MSG_FIND_ACCESSIBLITY_NODE_INFO_BY_ACCESSIBILITY_ID = 20; 2485 private final static int MSG_FIND_ACCESSIBLITY_NODE_INFO_BY_VIEW_ID = 21; 2486 private final static int MSG_FIND_ACCESSIBLITY_NODE_INFO_BY_TEXT = 22; 2487 private final static int MSG_PROCESS_INPUT_EVENTS = 23; 2488 2489 final class ViewRootHandler extends Handler { 2490 @Override 2491 public String getMessageName(Message message) { 2492 switch (message.what) { 2493 case MSG_INVALIDATE: 2494 return "MSG_INVALIDATE"; 2495 case MSG_INVALIDATE_RECT: 2496 return "MSG_INVALIDATE_RECT"; 2497 case MSG_DIE: 2498 return "MSG_DIE"; 2499 case MSG_RESIZED: 2500 return "MSG_RESIZED"; 2501 case MSG_RESIZED_REPORT: 2502 return "MSG_RESIZED_REPORT"; 2503 case MSG_WINDOW_FOCUS_CHANGED: 2504 return "MSG_WINDOW_FOCUS_CHANGED"; 2505 case MSG_DISPATCH_KEY: 2506 return "MSG_DISPATCH_KEY"; 2507 case MSG_DISPATCH_APP_VISIBILITY: 2508 return "MSG_DISPATCH_APP_VISIBILITY"; 2509 case MSG_DISPATCH_GET_NEW_SURFACE: 2510 return "MSG_DISPATCH_GET_NEW_SURFACE"; 2511 case MSG_IME_FINISHED_EVENT: 2512 return "MSG_IME_FINISHED_EVENT"; 2513 case MSG_DISPATCH_KEY_FROM_IME: 2514 return "MSG_DISPATCH_KEY_FROM_IME"; 2515 case MSG_FINISH_INPUT_CONNECTION: 2516 return "MSG_FINISH_INPUT_CONNECTION"; 2517 case MSG_CHECK_FOCUS: 2518 return "MSG_CHECK_FOCUS"; 2519 case MSG_CLOSE_SYSTEM_DIALOGS: 2520 return "MSG_CLOSE_SYSTEM_DIALOGS"; 2521 case MSG_DISPATCH_DRAG_EVENT: 2522 return "MSG_DISPATCH_DRAG_EVENT"; 2523 case MSG_DISPATCH_DRAG_LOCATION_EVENT: 2524 return "MSG_DISPATCH_DRAG_LOCATION_EVENT"; 2525 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: 2526 return "MSG_DISPATCH_SYSTEM_UI_VISIBILITY"; 2527 case MSG_UPDATE_CONFIGURATION: 2528 return "MSG_UPDATE_CONFIGURATION"; 2529 case MSG_PERFORM_ACCESSIBILITY_ACTION: 2530 return "MSG_PERFORM_ACCESSIBILITY_ACTION"; 2531 case MSG_FIND_ACCESSIBLITY_NODE_INFO_BY_ACCESSIBILITY_ID: 2532 return "MSG_FIND_ACCESSIBLITY_NODE_INFO_BY_ACCESSIBILITY_ID"; 2533 case MSG_FIND_ACCESSIBLITY_NODE_INFO_BY_VIEW_ID: 2534 return "MSG_FIND_ACCESSIBLITY_NODE_INFO_BY_VIEW_ID"; 2535 case MSG_FIND_ACCESSIBLITY_NODE_INFO_BY_TEXT: 2536 return "MSG_FIND_ACCESSIBLITY_NODE_INFO_BY_TEXT"; 2537 case MSG_PROCESS_INPUT_EVENTS: 2538 return "MSG_PROCESS_INPUT_EVENTS"; 2539 } 2540 return super.getMessageName(message); 2541 } 2542 2543 @Override 2544 public void handleMessage(Message msg) { 2545 switch (msg.what) { 2546 case MSG_INVALIDATE: 2547 ((View) msg.obj).invalidate(); 2548 break; 2549 case MSG_INVALIDATE_RECT: 2550 final View.AttachInfo.InvalidateInfo info = (View.AttachInfo.InvalidateInfo) msg.obj; 2551 info.target.invalidate(info.left, info.top, info.right, info.bottom); 2552 info.release(); 2553 break; 2554 case MSG_IME_FINISHED_EVENT: 2555 handleImeFinishedEvent(msg.arg1, msg.arg2 != 0); 2556 break; 2557 case MSG_PROCESS_INPUT_EVENTS: 2558 mProcessInputEventsScheduled = false; 2559 doProcessInputEvents(); 2560 break; 2561 case MSG_DISPATCH_APP_VISIBILITY: 2562 handleAppVisibility(msg.arg1 != 0); 2563 break; 2564 case MSG_DISPATCH_GET_NEW_SURFACE: 2565 handleGetNewSurface(); 2566 break; 2567 case MSG_RESIZED: 2568 ResizedInfo ri = (ResizedInfo)msg.obj; 2569 2570 if (mWinFrame.width() == msg.arg1 && mWinFrame.height() == msg.arg2 2571 && mPendingContentInsets.equals(ri.coveredInsets) 2572 && mPendingVisibleInsets.equals(ri.visibleInsets) 2573 && ((ResizedInfo)msg.obj).newConfig == null) { 2574 break; 2575 } 2576 // fall through... 2577 case MSG_RESIZED_REPORT: 2578 if (mAdded) { 2579 Configuration config = ((ResizedInfo)msg.obj).newConfig; 2580 if (config != null) { 2581 updateConfiguration(config, false); 2582 } 2583 mWinFrame.left = 0; 2584 mWinFrame.right = msg.arg1; 2585 mWinFrame.top = 0; 2586 mWinFrame.bottom = msg.arg2; 2587 mPendingContentInsets.set(((ResizedInfo)msg.obj).coveredInsets); 2588 mPendingVisibleInsets.set(((ResizedInfo)msg.obj).visibleInsets); 2589 if (msg.what == MSG_RESIZED_REPORT) { 2590 mReportNextDraw = true; 2591 } 2592 2593 if (mView != null) { 2594 forceLayout(mView); 2595 } 2596 requestLayout(); 2597 } 2598 break; 2599 case MSG_WINDOW_FOCUS_CHANGED: { 2600 if (mAdded) { 2601 boolean hasWindowFocus = msg.arg1 != 0; 2602 mAttachInfo.mHasWindowFocus = hasWindowFocus; 2603 2604 profileRendering(hasWindowFocus); 2605 2606 if (hasWindowFocus) { 2607 boolean inTouchMode = msg.arg2 != 0; 2608 ensureTouchModeLocally(inTouchMode); 2609 2610 if (mAttachInfo.mHardwareRenderer != null && 2611 mSurface != null && mSurface.isValid()) { 2612 mFullRedrawNeeded = true; 2613 try { 2614 mAttachInfo.mHardwareRenderer.initializeIfNeeded(mWidth, mHeight, 2615 mHolder); 2616 } catch (Surface.OutOfResourcesException e) { 2617 Log.e(TAG, "OutOfResourcesException locking surface", e); 2618 try { 2619 if (!sWindowSession.outOfMemory(mWindow)) { 2620 Slog.w(TAG, "No processes killed for memory; killing self"); 2621 Process.killProcess(Process.myPid()); 2622 } 2623 } catch (RemoteException ex) { 2624 } 2625 // Retry in a bit. 2626 sendMessageDelayed(obtainMessage(msg.what, msg.arg1, msg.arg2), 500); 2627 return; 2628 } 2629 } 2630 } 2631 2632 mLastWasImTarget = WindowManager.LayoutParams 2633 .mayUseInputMethod(mWindowAttributes.flags); 2634 2635 InputMethodManager imm = InputMethodManager.peekInstance(); 2636 if (mView != null) { 2637 if (hasWindowFocus && imm != null && mLastWasImTarget) { 2638 imm.startGettingWindowFocus(mView); 2639 } 2640 mAttachInfo.mKeyDispatchState.reset(); 2641 mView.dispatchWindowFocusChanged(hasWindowFocus); 2642 } 2643 2644 // Note: must be done after the focus change callbacks, 2645 // so all of the view state is set up correctly. 2646 if (hasWindowFocus) { 2647 if (imm != null && mLastWasImTarget) { 2648 imm.onWindowFocus(mView, mView.findFocus(), 2649 mWindowAttributes.softInputMode, 2650 !mHasHadWindowFocus, mWindowAttributes.flags); 2651 } 2652 // Clear the forward bit. We can just do this directly, since 2653 // the window manager doesn't care about it. 2654 mWindowAttributes.softInputMode &= 2655 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 2656 ((WindowManager.LayoutParams)mView.getLayoutParams()) 2657 .softInputMode &= 2658 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 2659 mHasHadWindowFocus = true; 2660 } 2661 2662 if (hasWindowFocus && mView != null && mAccessibilityManager.isEnabled()) { 2663 mView.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 2664 } 2665 } 2666 } break; 2667 case MSG_DIE: 2668 doDie(); 2669 break; 2670 case MSG_DISPATCH_KEY: { 2671 KeyEvent event = (KeyEvent)msg.obj; 2672 enqueueInputEvent(event, null, 0, true); 2673 } break; 2674 case MSG_DISPATCH_KEY_FROM_IME: { 2675 if (LOCAL_LOGV) Log.v( 2676 TAG, "Dispatching key " 2677 + msg.obj + " from IME to " + mView); 2678 KeyEvent event = (KeyEvent)msg.obj; 2679 if ((event.getFlags()&KeyEvent.FLAG_FROM_SYSTEM) != 0) { 2680 // The IME is trying to say this event is from the 2681 // system! Bad bad bad! 2682 //noinspection UnusedAssignment 2683 event = KeyEvent.changeFlags(event, event.getFlags() & ~KeyEvent.FLAG_FROM_SYSTEM); 2684 } 2685 enqueueInputEvent(event, null, QueuedInputEvent.FLAG_DELIVER_POST_IME, true); 2686 } break; 2687 case MSG_FINISH_INPUT_CONNECTION: { 2688 InputMethodManager imm = InputMethodManager.peekInstance(); 2689 if (imm != null) { 2690 imm.reportFinishInputConnection((InputConnection)msg.obj); 2691 } 2692 } break; 2693 case MSG_CHECK_FOCUS: { 2694 InputMethodManager imm = InputMethodManager.peekInstance(); 2695 if (imm != null) { 2696 imm.checkFocus(); 2697 } 2698 } break; 2699 case MSG_CLOSE_SYSTEM_DIALOGS: { 2700 if (mView != null) { 2701 mView.onCloseSystemDialogs((String)msg.obj); 2702 } 2703 } break; 2704 case MSG_DISPATCH_DRAG_EVENT: 2705 case MSG_DISPATCH_DRAG_LOCATION_EVENT: { 2706 DragEvent event = (DragEvent)msg.obj; 2707 event.mLocalState = mLocalDragState; // only present when this app called startDrag() 2708 handleDragEvent(event); 2709 } break; 2710 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: { 2711 handleDispatchSystemUiVisibilityChanged((SystemUiVisibilityInfo)msg.obj); 2712 } break; 2713 case MSG_UPDATE_CONFIGURATION: { 2714 Configuration config = (Configuration)msg.obj; 2715 if (config.isOtherSeqNewer(mLastConfiguration)) { 2716 config = mLastConfiguration; 2717 } 2718 updateConfiguration(config, false); 2719 } break; 2720 case MSG_FIND_ACCESSIBLITY_NODE_INFO_BY_ACCESSIBILITY_ID: { 2721 if (mView != null) { 2722 getAccessibilityInteractionController() 2723 .findAccessibilityNodeInfoByAccessibilityIdUiThread(msg); 2724 } 2725 } break; 2726 case MSG_PERFORM_ACCESSIBILITY_ACTION: { 2727 if (mView != null) { 2728 getAccessibilityInteractionController() 2729 .perfromAccessibilityActionUiThread(msg); 2730 } 2731 } break; 2732 case MSG_FIND_ACCESSIBLITY_NODE_INFO_BY_VIEW_ID: { 2733 if (mView != null) { 2734 getAccessibilityInteractionController() 2735 .findAccessibilityNodeInfoByViewIdUiThread(msg); 2736 } 2737 } break; 2738 case MSG_FIND_ACCESSIBLITY_NODE_INFO_BY_TEXT: { 2739 if (mView != null) { 2740 getAccessibilityInteractionController() 2741 .findAccessibilityNodeInfosByTextUiThread(msg); 2742 } 2743 } break; 2744 } 2745 } 2746 } 2747 final ViewRootHandler mHandler = new ViewRootHandler(); 2748 2749 /** 2750 * Something in the current window tells us we need to change the touch mode. For 2751 * example, we are not in touch mode, and the user touches the screen. 2752 * 2753 * If the touch mode has changed, tell the window manager, and handle it locally. 2754 * 2755 * @param inTouchMode Whether we want to be in touch mode. 2756 * @return True if the touch mode changed and focus changed was changed as a result 2757 */ 2758 boolean ensureTouchMode(boolean inTouchMode) { 2759 if (DBG) Log.d("touchmode", "ensureTouchMode(" + inTouchMode + "), current " 2760 + "touch mode is " + mAttachInfo.mInTouchMode); 2761 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 2762 2763 // tell the window manager 2764 try { 2765 sWindowSession.setInTouchMode(inTouchMode); 2766 } catch (RemoteException e) { 2767 throw new RuntimeException(e); 2768 } 2769 2770 // handle the change 2771 return ensureTouchModeLocally(inTouchMode); 2772 } 2773 2774 /** 2775 * Ensure that the touch mode for this window is set, and if it is changing, 2776 * take the appropriate action. 2777 * @param inTouchMode Whether we want to be in touch mode. 2778 * @return True if the touch mode changed and focus changed was changed as a result 2779 */ 2780 private boolean ensureTouchModeLocally(boolean inTouchMode) { 2781 if (DBG) Log.d("touchmode", "ensureTouchModeLocally(" + inTouchMode + "), current " 2782 + "touch mode is " + mAttachInfo.mInTouchMode); 2783 2784 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 2785 2786 mAttachInfo.mInTouchMode = inTouchMode; 2787 mAttachInfo.mTreeObserver.dispatchOnTouchModeChanged(inTouchMode); 2788 2789 return (inTouchMode) ? enterTouchMode() : leaveTouchMode(); 2790 } 2791 2792 private boolean enterTouchMode() { 2793 if (mView != null) { 2794 if (mView.hasFocus()) { 2795 // note: not relying on mFocusedView here because this could 2796 // be when the window is first being added, and mFocused isn't 2797 // set yet. 2798 final View focused = mView.findFocus(); 2799 if (focused != null && !focused.isFocusableInTouchMode()) { 2800 2801 final ViewGroup ancestorToTakeFocus = 2802 findAncestorToTakeFocusInTouchMode(focused); 2803 if (ancestorToTakeFocus != null) { 2804 // there is an ancestor that wants focus after its descendants that 2805 // is focusable in touch mode.. give it focus 2806 return ancestorToTakeFocus.requestFocus(); 2807 } else { 2808 // nothing appropriate to have focus in touch mode, clear it out 2809 mView.unFocus(); 2810 mAttachInfo.mTreeObserver.dispatchOnGlobalFocusChange(focused, null); 2811 mFocusedView = null; 2812 mOldFocusedView = null; 2813 return true; 2814 } 2815 } 2816 } 2817 } 2818 return false; 2819 } 2820 2821 2822 /** 2823 * Find an ancestor of focused that wants focus after its descendants and is 2824 * focusable in touch mode. 2825 * @param focused The currently focused view. 2826 * @return An appropriate view, or null if no such view exists. 2827 */ 2828 private ViewGroup findAncestorToTakeFocusInTouchMode(View focused) { 2829 ViewParent parent = focused.getParent(); 2830 while (parent instanceof ViewGroup) { 2831 final ViewGroup vgParent = (ViewGroup) parent; 2832 if (vgParent.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 2833 && vgParent.isFocusableInTouchMode()) { 2834 return vgParent; 2835 } 2836 if (vgParent.isRootNamespace()) { 2837 return null; 2838 } else { 2839 parent = vgParent.getParent(); 2840 } 2841 } 2842 return null; 2843 } 2844 2845 private boolean leaveTouchMode() { 2846 if (mView != null) { 2847 if (mView.hasFocus()) { 2848 // i learned the hard way to not trust mFocusedView :) 2849 mFocusedView = mView.findFocus(); 2850 if (!(mFocusedView instanceof ViewGroup)) { 2851 // some view has focus, let it keep it 2852 return false; 2853 } else if (((ViewGroup)mFocusedView).getDescendantFocusability() != 2854 ViewGroup.FOCUS_AFTER_DESCENDANTS) { 2855 // some view group has focus, and doesn't prefer its children 2856 // over itself for focus, so let them keep it. 2857 return false; 2858 } 2859 } 2860 2861 // find the best view to give focus to in this brave new non-touch-mode 2862 // world 2863 final View focused = focusSearch(null, View.FOCUS_DOWN); 2864 if (focused != null) { 2865 return focused.requestFocus(View.FOCUS_DOWN); 2866 } 2867 } 2868 return false; 2869 } 2870 2871 private void deliverInputEvent(QueuedInputEvent q) { 2872 if (ViewDebug.DEBUG_LATENCY) { 2873 q.mDeliverTimeNanos = System.nanoTime(); 2874 } 2875 2876 if (q.mEvent instanceof KeyEvent) { 2877 deliverKeyEvent(q); 2878 } else { 2879 final int source = q.mEvent.getSource(); 2880 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 2881 deliverPointerEvent(q); 2882 } else if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 2883 deliverTrackballEvent(q); 2884 } else { 2885 deliverGenericMotionEvent(q); 2886 } 2887 } 2888 } 2889 2890 private void deliverPointerEvent(QueuedInputEvent q) { 2891 final MotionEvent event = (MotionEvent)q.mEvent; 2892 final boolean isTouchEvent = event.isTouchEvent(); 2893 if (mInputEventConsistencyVerifier != null) { 2894 if (isTouchEvent) { 2895 mInputEventConsistencyVerifier.onTouchEvent(event, 0); 2896 } else { 2897 mInputEventConsistencyVerifier.onGenericMotionEvent(event, 0); 2898 } 2899 } 2900 2901 // If there is no view, then the event will not be handled. 2902 if (mView == null || !mAdded) { 2903 finishInputEvent(q, false); 2904 return; 2905 } 2906 2907 // Translate the pointer event for compatibility, if needed. 2908 if (mTranslator != null) { 2909 mTranslator.translateEventInScreenToAppWindow(event); 2910 } 2911 2912 // Enter touch mode on down or scroll. 2913 final int action = event.getAction(); 2914 if (action == MotionEvent.ACTION_DOWN || action == MotionEvent.ACTION_SCROLL) { 2915 ensureTouchMode(true); 2916 } 2917 2918 // Offset the scroll position. 2919 if (mCurScrollY != 0) { 2920 event.offsetLocation(0, mCurScrollY); 2921 } 2922 if (MEASURE_LATENCY) { 2923 lt.sample("A Dispatching PointerEvents", System.nanoTime() - event.getEventTimeNano()); 2924 } 2925 2926 // Remember the touch position for possible drag-initiation. 2927 if (isTouchEvent) { 2928 mLastTouchPoint.x = event.getRawX(); 2929 mLastTouchPoint.y = event.getRawY(); 2930 } 2931 2932 // Dispatch touch to view hierarchy. 2933 boolean handled = mView.dispatchPointerEvent(event); 2934 if (MEASURE_LATENCY) { 2935 lt.sample("B Dispatched PointerEvents ", System.nanoTime() - event.getEventTimeNano()); 2936 } 2937 if (handled) { 2938 finishInputEvent(q, true); 2939 return; 2940 } 2941 2942 // Pointer event was unhandled. 2943 finishInputEvent(q, false); 2944 } 2945 2946 private void deliverTrackballEvent(QueuedInputEvent q) { 2947 final MotionEvent event = (MotionEvent)q.mEvent; 2948 if (mInputEventConsistencyVerifier != null) { 2949 mInputEventConsistencyVerifier.onTrackballEvent(event, 0); 2950 } 2951 2952 // If there is no view, then the event will not be handled. 2953 if (mView == null || !mAdded) { 2954 finishInputEvent(q, false); 2955 return; 2956 } 2957 2958 // Deliver the trackball event to the view. 2959 if (mView.dispatchTrackballEvent(event)) { 2960 // If we reach this, we delivered a trackball event to mView and 2961 // mView consumed it. Because we will not translate the trackball 2962 // event into a key event, touch mode will not exit, so we exit 2963 // touch mode here. 2964 ensureTouchMode(false); 2965 2966 finishInputEvent(q, true); 2967 mLastTrackballTime = Integer.MIN_VALUE; 2968 return; 2969 } 2970 2971 // Translate the trackball event into DPAD keys and try to deliver those. 2972 final TrackballAxis x = mTrackballAxisX; 2973 final TrackballAxis y = mTrackballAxisY; 2974 2975 long curTime = SystemClock.uptimeMillis(); 2976 if ((mLastTrackballTime + MAX_TRACKBALL_DELAY) < curTime) { 2977 // It has been too long since the last movement, 2978 // so restart at the beginning. 2979 x.reset(0); 2980 y.reset(0); 2981 mLastTrackballTime = curTime; 2982 } 2983 2984 final int action = event.getAction(); 2985 final int metaState = event.getMetaState(); 2986 switch (action) { 2987 case MotionEvent.ACTION_DOWN: 2988 x.reset(2); 2989 y.reset(2); 2990 enqueueInputEvent(new KeyEvent(curTime, curTime, 2991 KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 2992 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 2993 InputDevice.SOURCE_KEYBOARD)); 2994 break; 2995 case MotionEvent.ACTION_UP: 2996 x.reset(2); 2997 y.reset(2); 2998 enqueueInputEvent(new KeyEvent(curTime, curTime, 2999 KeyEvent.ACTION_UP, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 3000 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 3001 InputDevice.SOURCE_KEYBOARD)); 3002 break; 3003 } 3004 3005 if (DEBUG_TRACKBALL) Log.v(TAG, "TB X=" + x.position + " step=" 3006 + x.step + " dir=" + x.dir + " acc=" + x.acceleration 3007 + " move=" + event.getX() 3008 + " / Y=" + y.position + " step=" 3009 + y.step + " dir=" + y.dir + " acc=" + y.acceleration 3010 + " move=" + event.getY()); 3011 final float xOff = x.collect(event.getX(), event.getEventTime(), "X"); 3012 final float yOff = y.collect(event.getY(), event.getEventTime(), "Y"); 3013 3014 // Generate DPAD events based on the trackball movement. 3015 // We pick the axis that has moved the most as the direction of 3016 // the DPAD. When we generate DPAD events for one axis, then the 3017 // other axis is reset -- we don't want to perform DPAD jumps due 3018 // to slight movements in the trackball when making major movements 3019 // along the other axis. 3020 int keycode = 0; 3021 int movement = 0; 3022 float accel = 1; 3023 if (xOff > yOff) { 3024 movement = x.generate((2/event.getXPrecision())); 3025 if (movement != 0) { 3026 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_RIGHT 3027 : KeyEvent.KEYCODE_DPAD_LEFT; 3028 accel = x.acceleration; 3029 y.reset(2); 3030 } 3031 } else if (yOff > 0) { 3032 movement = y.generate((2/event.getYPrecision())); 3033 if (movement != 0) { 3034 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_DOWN 3035 : KeyEvent.KEYCODE_DPAD_UP; 3036 accel = y.acceleration; 3037 x.reset(2); 3038 } 3039 } 3040 3041 if (keycode != 0) { 3042 if (movement < 0) movement = -movement; 3043 int accelMovement = (int)(movement * accel); 3044 if (DEBUG_TRACKBALL) Log.v(TAG, "Move: movement=" + movement 3045 + " accelMovement=" + accelMovement 3046 + " accel=" + accel); 3047 if (accelMovement > movement) { 3048 if (DEBUG_TRACKBALL) Log.v("foo", "Delivering fake DPAD: " 3049 + keycode); 3050 movement--; 3051 int repeatCount = accelMovement - movement; 3052 enqueueInputEvent(new KeyEvent(curTime, curTime, 3053 KeyEvent.ACTION_MULTIPLE, keycode, repeatCount, metaState, 3054 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 3055 InputDevice.SOURCE_KEYBOARD)); 3056 } 3057 while (movement > 0) { 3058 if (DEBUG_TRACKBALL) Log.v("foo", "Delivering fake DPAD: " 3059 + keycode); 3060 movement--; 3061 curTime = SystemClock.uptimeMillis(); 3062 enqueueInputEvent(new KeyEvent(curTime, curTime, 3063 KeyEvent.ACTION_DOWN, keycode, 0, metaState, 3064 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 3065 InputDevice.SOURCE_KEYBOARD)); 3066 enqueueInputEvent(new KeyEvent(curTime, curTime, 3067 KeyEvent.ACTION_UP, keycode, 0, metaState, 3068 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 3069 InputDevice.SOURCE_KEYBOARD)); 3070 } 3071 mLastTrackballTime = curTime; 3072 } 3073 3074 // Unfortunately we can't tell whether the application consumed the keys, so 3075 // we always consider the trackball event handled. 3076 finishInputEvent(q, true); 3077 } 3078 3079 private void deliverGenericMotionEvent(QueuedInputEvent q) { 3080 final MotionEvent event = (MotionEvent)q.mEvent; 3081 if (mInputEventConsistencyVerifier != null) { 3082 mInputEventConsistencyVerifier.onGenericMotionEvent(event, 0); 3083 } 3084 3085 final int source = event.getSource(); 3086 final boolean isJoystick = (source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0; 3087 3088 // If there is no view, then the event will not be handled. 3089 if (mView == null || !mAdded) { 3090 if (isJoystick) { 3091 updateJoystickDirection(event, false); 3092 } 3093 finishInputEvent(q, false); 3094 return; 3095 } 3096 3097 // Deliver the event to the view. 3098 if (mView.dispatchGenericMotionEvent(event)) { 3099 if (isJoystick) { 3100 updateJoystickDirection(event, false); 3101 } 3102 finishInputEvent(q, true); 3103 return; 3104 } 3105 3106 if (isJoystick) { 3107 // Translate the joystick event into DPAD keys and try to deliver those. 3108 updateJoystickDirection(event, true); 3109 finishInputEvent(q, true); 3110 } else { 3111 finishInputEvent(q, false); 3112 } 3113 } 3114 3115 private void updateJoystickDirection(MotionEvent event, boolean synthesizeNewKeys) { 3116 final long time = event.getEventTime(); 3117 final int metaState = event.getMetaState(); 3118 final int deviceId = event.getDeviceId(); 3119 final int source = event.getSource(); 3120 3121 int xDirection = joystickAxisValueToDirection(event.getAxisValue(MotionEvent.AXIS_HAT_X)); 3122 if (xDirection == 0) { 3123 xDirection = joystickAxisValueToDirection(event.getX()); 3124 } 3125 3126 int yDirection = joystickAxisValueToDirection(event.getAxisValue(MotionEvent.AXIS_HAT_Y)); 3127 if (yDirection == 0) { 3128 yDirection = joystickAxisValueToDirection(event.getY()); 3129 } 3130 3131 if (xDirection != mLastJoystickXDirection) { 3132 if (mLastJoystickXKeyCode != 0) { 3133 enqueueInputEvent(new KeyEvent(time, time, 3134 KeyEvent.ACTION_UP, mLastJoystickXKeyCode, 0, metaState, 3135 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 3136 mLastJoystickXKeyCode = 0; 3137 } 3138 3139 mLastJoystickXDirection = xDirection; 3140 3141 if (xDirection != 0 && synthesizeNewKeys) { 3142 mLastJoystickXKeyCode = xDirection > 0 3143 ? KeyEvent.KEYCODE_DPAD_RIGHT : KeyEvent.KEYCODE_DPAD_LEFT; 3144 enqueueInputEvent(new KeyEvent(time, time, 3145 KeyEvent.ACTION_DOWN, mLastJoystickXKeyCode, 0, metaState, 3146 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 3147 } 3148 } 3149 3150 if (yDirection != mLastJoystickYDirection) { 3151 if (mLastJoystickYKeyCode != 0) { 3152 enqueueInputEvent(new KeyEvent(time, time, 3153 KeyEvent.ACTION_UP, mLastJoystickYKeyCode, 0, metaState, 3154 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 3155 mLastJoystickYKeyCode = 0; 3156 } 3157 3158 mLastJoystickYDirection = yDirection; 3159 3160 if (yDirection != 0 && synthesizeNewKeys) { 3161 mLastJoystickYKeyCode = yDirection > 0 3162 ? KeyEvent.KEYCODE_DPAD_DOWN : KeyEvent.KEYCODE_DPAD_UP; 3163 enqueueInputEvent(new KeyEvent(time, time, 3164 KeyEvent.ACTION_DOWN, mLastJoystickYKeyCode, 0, metaState, 3165 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 3166 } 3167 } 3168 } 3169 3170 private static int joystickAxisValueToDirection(float value) { 3171 if (value >= 0.5f) { 3172 return 1; 3173 } else if (value <= -0.5f) { 3174 return -1; 3175 } else { 3176 return 0; 3177 } 3178 } 3179 3180 /** 3181 * Returns true if the key is used for keyboard navigation. 3182 * @param keyEvent The key event. 3183 * @return True if the key is used for keyboard navigation. 3184 */ 3185 private static boolean isNavigationKey(KeyEvent keyEvent) { 3186 switch (keyEvent.getKeyCode()) { 3187 case KeyEvent.KEYCODE_DPAD_LEFT: 3188 case KeyEvent.KEYCODE_DPAD_RIGHT: 3189 case KeyEvent.KEYCODE_DPAD_UP: 3190 case KeyEvent.KEYCODE_DPAD_DOWN: 3191 case KeyEvent.KEYCODE_DPAD_CENTER: 3192 case KeyEvent.KEYCODE_PAGE_UP: 3193 case KeyEvent.KEYCODE_PAGE_DOWN: 3194 case KeyEvent.KEYCODE_MOVE_HOME: 3195 case KeyEvent.KEYCODE_MOVE_END: 3196 case KeyEvent.KEYCODE_TAB: 3197 case KeyEvent.KEYCODE_SPACE: 3198 case KeyEvent.KEYCODE_ENTER: 3199 return true; 3200 } 3201 return false; 3202 } 3203 3204 /** 3205 * Returns true if the key is used for typing. 3206 * @param keyEvent The key event. 3207 * @return True if the key is used for typing. 3208 */ 3209 private static boolean isTypingKey(KeyEvent keyEvent) { 3210 return keyEvent.getUnicodeChar() > 0; 3211 } 3212 3213 /** 3214 * See if the key event means we should leave touch mode (and leave touch mode if so). 3215 * @param event The key event. 3216 * @return Whether this key event should be consumed (meaning the act of 3217 * leaving touch mode alone is considered the event). 3218 */ 3219 private boolean checkForLeavingTouchModeAndConsume(KeyEvent event) { 3220 // Only relevant in touch mode. 3221 if (!mAttachInfo.mInTouchMode) { 3222 return false; 3223 } 3224 3225 // Only consider leaving touch mode on DOWN or MULTIPLE actions, never on UP. 3226 final int action = event.getAction(); 3227 if (action != KeyEvent.ACTION_DOWN && action != KeyEvent.ACTION_MULTIPLE) { 3228 return false; 3229 } 3230 3231 // Don't leave touch mode if the IME told us not to. 3232 if ((event.getFlags() & KeyEvent.FLAG_KEEP_TOUCH_MODE) != 0) { 3233 return false; 3234 } 3235 3236 // If the key can be used for keyboard navigation then leave touch mode 3237 // and select a focused view if needed (in ensureTouchMode). 3238 // When a new focused view is selected, we consume the navigation key because 3239 // navigation doesn't make much sense unless a view already has focus so 3240 // the key's purpose is to set focus. 3241 if (isNavigationKey(event)) { 3242 return ensureTouchMode(false); 3243 } 3244 3245 // If the key can be used for typing then leave touch mode 3246 // and select a focused view if needed (in ensureTouchMode). 3247 // Always allow the view to process the typing key. 3248 if (isTypingKey(event)) { 3249 ensureTouchMode(false); 3250 return false; 3251 } 3252 3253 return false; 3254 } 3255 3256 private void deliverKeyEvent(QueuedInputEvent q) { 3257 final KeyEvent event = (KeyEvent)q.mEvent; 3258 if (mInputEventConsistencyVerifier != null) { 3259 mInputEventConsistencyVerifier.onKeyEvent(event, 0); 3260 } 3261 3262 if ((q.mFlags & QueuedInputEvent.FLAG_DELIVER_POST_IME) == 0) { 3263 // If there is no view, then the event will not be handled. 3264 if (mView == null || !mAdded) { 3265 finishInputEvent(q, false); 3266 return; 3267 } 3268 3269 if (LOCAL_LOGV) Log.v(TAG, "Dispatching key " + event + " to " + mView); 3270 3271 // Perform predispatching before the IME. 3272 if (mView.dispatchKeyEventPreIme(event)) { 3273 finishInputEvent(q, true); 3274 return; 3275 } 3276 3277 // Dispatch to the IME before propagating down the view hierarchy. 3278 // The IME will eventually call back into handleImeFinishedEvent. 3279 if (mLastWasImTarget) { 3280 InputMethodManager imm = InputMethodManager.peekInstance(); 3281 if (imm != null) { 3282 final int seq = event.getSequenceNumber(); 3283 if (DEBUG_IMF) Log.v(TAG, "Sending key event to IME: seq=" 3284 + seq + " event=" + event); 3285 imm.dispatchKeyEvent(mView.getContext(), seq, event, mInputMethodCallback); 3286 return; 3287 } 3288 } 3289 } 3290 3291 // Not dispatching to IME, continue with post IME actions. 3292 deliverKeyEventPostIme(q); 3293 } 3294 3295 void handleImeFinishedEvent(int seq, boolean handled) { 3296 final QueuedInputEvent q = mCurrentInputEvent; 3297 if (q != null && q.mEvent.getSequenceNumber() == seq) { 3298 final KeyEvent event = (KeyEvent)q.mEvent; 3299 if (DEBUG_IMF) { 3300 Log.v(TAG, "IME finished event: seq=" + seq 3301 + " handled=" + handled + " event=" + event); 3302 } 3303 if (handled) { 3304 finishInputEvent(q, true); 3305 } else { 3306 deliverKeyEventPostIme(q); 3307 } 3308 } else { 3309 if (DEBUG_IMF) { 3310 Log.v(TAG, "IME finished event: seq=" + seq 3311 + " handled=" + handled + ", event not found!"); 3312 } 3313 } 3314 } 3315 3316 private void deliverKeyEventPostIme(QueuedInputEvent q) { 3317 final KeyEvent event = (KeyEvent)q.mEvent; 3318 if (ViewDebug.DEBUG_LATENCY) { 3319 q.mDeliverPostImeTimeNanos = System.nanoTime(); 3320 } 3321 3322 // If the view went away, then the event will not be handled. 3323 if (mView == null || !mAdded) { 3324 finishInputEvent(q, false); 3325 return; 3326 } 3327 3328 // If the key's purpose is to exit touch mode then we consume it and consider it handled. 3329 if (checkForLeavingTouchModeAndConsume(event)) { 3330 finishInputEvent(q, true); 3331 return; 3332 } 3333 3334 // Make sure the fallback event policy sees all keys that will be delivered to the 3335 // view hierarchy. 3336 mFallbackEventHandler.preDispatchKeyEvent(event); 3337 3338 // Deliver the key to the view hierarchy. 3339 if (mView.dispatchKeyEvent(event)) { 3340 finishInputEvent(q, true); 3341 return; 3342 } 3343 3344 // If the Control modifier is held, try to interpret the key as a shortcut. 3345 if (event.getAction() == KeyEvent.ACTION_DOWN 3346 && event.isCtrlPressed() 3347 && event.getRepeatCount() == 0 3348 && !KeyEvent.isModifierKey(event.getKeyCode())) { 3349 if (mView.dispatchKeyShortcutEvent(event)) { 3350 finishInputEvent(q, true); 3351 return; 3352 } 3353 } 3354 3355 // Apply the fallback event policy. 3356 if (mFallbackEventHandler.dispatchKeyEvent(event)) { 3357 finishInputEvent(q, true); 3358 return; 3359 } 3360 3361 // Handle automatic focus changes. 3362 if (event.getAction() == KeyEvent.ACTION_DOWN) { 3363 int direction = 0; 3364 switch (event.getKeyCode()) { 3365 case KeyEvent.KEYCODE_DPAD_LEFT: 3366 if (event.hasNoModifiers()) { 3367 direction = View.FOCUS_LEFT; 3368 } 3369 break; 3370 case KeyEvent.KEYCODE_DPAD_RIGHT: 3371 if (event.hasNoModifiers()) { 3372 direction = View.FOCUS_RIGHT; 3373 } 3374 break; 3375 case KeyEvent.KEYCODE_DPAD_UP: 3376 if (event.hasNoModifiers()) { 3377 direction = View.FOCUS_UP; 3378 } 3379 break; 3380 case KeyEvent.KEYCODE_DPAD_DOWN: 3381 if (event.hasNoModifiers()) { 3382 direction = View.FOCUS_DOWN; 3383 } 3384 break; 3385 case KeyEvent.KEYCODE_TAB: 3386 if (event.hasNoModifiers()) { 3387 direction = View.FOCUS_FORWARD; 3388 } else if (event.hasModifiers(KeyEvent.META_SHIFT_ON)) { 3389 direction = View.FOCUS_BACKWARD; 3390 } 3391 break; 3392 } 3393 3394 if (direction != 0) { 3395 View focused = mView != null ? mView.findFocus() : null; 3396 if (focused != null) { 3397 View v = focused.focusSearch(direction); 3398 if (v != null && v != focused) { 3399 // do the math the get the interesting rect 3400 // of previous focused into the coord system of 3401 // newly focused view 3402 focused.getFocusedRect(mTempRect); 3403 if (mView instanceof ViewGroup) { 3404 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 3405 focused, mTempRect); 3406 ((ViewGroup) mView).offsetRectIntoDescendantCoords( 3407 v, mTempRect); 3408 } 3409 if (v.requestFocus(direction, mTempRect)) { 3410 playSoundEffect( 3411 SoundEffectConstants.getContantForFocusDirection(direction)); 3412 finishInputEvent(q, true); 3413 return; 3414 } 3415 } 3416 3417 // Give the focused view a last chance to handle the dpad key. 3418 if (mView.dispatchUnhandledMove(focused, direction)) { 3419 finishInputEvent(q, true); 3420 return; 3421 } 3422 } 3423 } 3424 } 3425 3426 // Key was unhandled. 3427 finishInputEvent(q, false); 3428 } 3429 3430 /* drag/drop */ 3431 void setLocalDragState(Object obj) { 3432 mLocalDragState = obj; 3433 } 3434 3435 private void handleDragEvent(DragEvent event) { 3436 // From the root, only drag start/end/location are dispatched. entered/exited 3437 // are determined and dispatched by the viewgroup hierarchy, who then report 3438 // that back here for ultimate reporting back to the framework. 3439 if (mView != null && mAdded) { 3440 final int what = event.mAction; 3441 3442 if (what == DragEvent.ACTION_DRAG_EXITED) { 3443 // A direct EXITED event means that the window manager knows we've just crossed 3444 // a window boundary, so the current drag target within this one must have 3445 // just been exited. Send it the usual notifications and then we're done 3446 // for now. 3447 mView.dispatchDragEvent(event); 3448 } else { 3449 // Cache the drag description when the operation starts, then fill it in 3450 // on subsequent calls as a convenience 3451 if (what == DragEvent.ACTION_DRAG_STARTED) { 3452 mCurrentDragView = null; // Start the current-recipient tracking 3453 mDragDescription = event.mClipDescription; 3454 } else { 3455 event.mClipDescription = mDragDescription; 3456 } 3457 3458 // For events with a [screen] location, translate into window coordinates 3459 if ((what == DragEvent.ACTION_DRAG_LOCATION) || (what == DragEvent.ACTION_DROP)) { 3460 mDragPoint.set(event.mX, event.mY); 3461 if (mTranslator != null) { 3462 mTranslator.translatePointInScreenToAppWindow(mDragPoint); 3463 } 3464 3465 if (mCurScrollY != 0) { 3466 mDragPoint.offset(0, mCurScrollY); 3467 } 3468 3469 event.mX = mDragPoint.x; 3470 event.mY = mDragPoint.y; 3471 } 3472 3473 // Remember who the current drag target is pre-dispatch 3474 final View prevDragView = mCurrentDragView; 3475 3476 // Now dispatch the drag/drop event 3477 boolean result = mView.dispatchDragEvent(event); 3478 3479 // If we changed apparent drag target, tell the OS about it 3480 if (prevDragView != mCurrentDragView) { 3481 try { 3482 if (prevDragView != null) { 3483 sWindowSession.dragRecipientExited(mWindow); 3484 } 3485 if (mCurrentDragView != null) { 3486 sWindowSession.dragRecipientEntered(mWindow); 3487 } 3488 } catch (RemoteException e) { 3489 Slog.e(TAG, "Unable to note drag target change"); 3490 } 3491 } 3492 3493 // Report the drop result when we're done 3494 if (what == DragEvent.ACTION_DROP) { 3495 mDragDescription = null; 3496 try { 3497 Log.i(TAG, "Reporting drop result: " + result); 3498 sWindowSession.reportDropResult(mWindow, result); 3499 } catch (RemoteException e) { 3500 Log.e(TAG, "Unable to report drop result"); 3501 } 3502 } 3503 3504 // When the drag operation ends, release any local state object 3505 // that may have been in use 3506 if (what == DragEvent.ACTION_DRAG_ENDED) { 3507 setLocalDragState(null); 3508 } 3509 } 3510 } 3511 event.recycle(); 3512 } 3513 3514 public void handleDispatchSystemUiVisibilityChanged(SystemUiVisibilityInfo args) { 3515 if (mSeq != args.seq) { 3516 // The sequence has changed, so we need to update our value and make 3517 // sure to do a traversal afterward so the window manager is given our 3518 // most recent data. 3519 mSeq = args.seq; 3520 mAttachInfo.mForceReportNewAttributes = true; 3521 scheduleTraversals(); 3522 } 3523 if (mView == null) return; 3524 if (args.localChanges != 0) { 3525 if (mAttachInfo != null) { 3526 mAttachInfo.mSystemUiVisibility = 3527 (mAttachInfo.mSystemUiVisibility & ~args.localChanges) | 3528 (args.localValue & args.localChanges); 3529 mAttachInfo.mRecomputeGlobalAttributes = true; 3530 } 3531 mView.updateLocalSystemUiVisibility(args.localValue, args.localChanges); 3532 scheduleTraversals(); 3533 } 3534 mView.dispatchSystemUiVisibilityChanged(args.globalVisibility); 3535 } 3536 3537 public void getLastTouchPoint(Point outLocation) { 3538 outLocation.x = (int) mLastTouchPoint.x; 3539 outLocation.y = (int) mLastTouchPoint.y; 3540 } 3541 3542 public void setDragFocus(View newDragTarget) { 3543 if (mCurrentDragView != newDragTarget) { 3544 mCurrentDragView = newDragTarget; 3545 } 3546 } 3547 3548 private AudioManager getAudioManager() { 3549 if (mView == null) { 3550 throw new IllegalStateException("getAudioManager called when there is no mView"); 3551 } 3552 if (mAudioManager == null) { 3553 mAudioManager = (AudioManager) mView.getContext().getSystemService(Context.AUDIO_SERVICE); 3554 } 3555 return mAudioManager; 3556 } 3557 3558 public AccessibilityInteractionController getAccessibilityInteractionController() { 3559 if (mView == null) { 3560 throw new IllegalStateException("getAccessibilityInteractionController" 3561 + " called when there is no mView"); 3562 } 3563 if (mAccessibilityInteractionController == null) { 3564 mAccessibilityInteractionController = new AccessibilityInteractionController(); 3565 } 3566 return mAccessibilityInteractionController; 3567 } 3568 3569 public AccessibilityNodePrefetcher getAccessibilityNodePrefetcher() { 3570 if (mView == null) { 3571 throw new IllegalStateException("getAccessibilityNodePrefetcher" 3572 + " called when there is no mView"); 3573 } 3574 if (mAccessibilityNodePrefetcher == null) { 3575 mAccessibilityNodePrefetcher = new AccessibilityNodePrefetcher(); 3576 } 3577 return mAccessibilityNodePrefetcher; 3578 } 3579 3580 private int relayoutWindow(WindowManager.LayoutParams params, int viewVisibility, 3581 boolean insetsPending) throws RemoteException { 3582 3583 float appScale = mAttachInfo.mApplicationScale; 3584 boolean restore = false; 3585 if (params != null && mTranslator != null) { 3586 restore = true; 3587 params.backup(); 3588 mTranslator.translateWindowLayout(params); 3589 } 3590 if (params != null) { 3591 if (DBG) Log.d(TAG, "WindowLayout in layoutWindow:" + params); 3592 } 3593 mPendingConfiguration.seq = 0; 3594 //Log.d(TAG, ">>>>>> CALLING relayout"); 3595 if (params != null && mOrigWindowType != params.type) { 3596 // For compatibility with old apps, don't crash here. 3597 if (mTargetSdkVersion < android.os.Build.VERSION_CODES.ICE_CREAM_SANDWICH) { 3598 Slog.w(TAG, "Window type can not be changed after " 3599 + "the window is added; ignoring change of " + mView); 3600 params.type = mOrigWindowType; 3601 } 3602 } 3603 int relayoutResult = sWindowSession.relayout( 3604 mWindow, mSeq, params, 3605 (int) (mView.getMeasuredWidth() * appScale + 0.5f), 3606 (int) (mView.getMeasuredHeight() * appScale + 0.5f), 3607 viewVisibility, insetsPending ? WindowManagerImpl.RELAYOUT_INSETS_PENDING : 0, 3608 mWinFrame, mPendingContentInsets, mPendingVisibleInsets, 3609 mPendingConfiguration, mSurface); 3610 //Log.d(TAG, "<<<<<< BACK FROM relayout"); 3611 if (restore) { 3612 params.restore(); 3613 } 3614 3615 if (mTranslator != null) { 3616 mTranslator.translateRectInScreenToAppWinFrame(mWinFrame); 3617 mTranslator.translateRectInScreenToAppWindow(mPendingContentInsets); 3618 mTranslator.translateRectInScreenToAppWindow(mPendingVisibleInsets); 3619 } 3620 return relayoutResult; 3621 } 3622 3623 /** 3624 * {@inheritDoc} 3625 */ 3626 public void playSoundEffect(int effectId) { 3627 checkThread(); 3628 3629 try { 3630 final AudioManager audioManager = getAudioManager(); 3631 3632 switch (effectId) { 3633 case SoundEffectConstants.CLICK: 3634 audioManager.playSoundEffect(AudioManager.FX_KEY_CLICK); 3635 return; 3636 case SoundEffectConstants.NAVIGATION_DOWN: 3637 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_DOWN); 3638 return; 3639 case SoundEffectConstants.NAVIGATION_LEFT: 3640 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_LEFT); 3641 return; 3642 case SoundEffectConstants.NAVIGATION_RIGHT: 3643 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_RIGHT); 3644 return; 3645 case SoundEffectConstants.NAVIGATION_UP: 3646 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_UP); 3647 return; 3648 default: 3649 throw new IllegalArgumentException("unknown effect id " + effectId + 3650 " not defined in " + SoundEffectConstants.class.getCanonicalName()); 3651 } 3652 } catch (IllegalStateException e) { 3653 // Exception thrown by getAudioManager() when mView is null 3654 Log.e(TAG, "FATAL EXCEPTION when attempting to play sound effect: " + e); 3655 e.printStackTrace(); 3656 } 3657 } 3658 3659 /** 3660 * {@inheritDoc} 3661 */ 3662 public boolean performHapticFeedback(int effectId, boolean always) { 3663 try { 3664 return sWindowSession.performHapticFeedback(mWindow, effectId, always); 3665 } catch (RemoteException e) { 3666 return false; 3667 } 3668 } 3669 3670 /** 3671 * {@inheritDoc} 3672 */ 3673 public View focusSearch(View focused, int direction) { 3674 checkThread(); 3675 if (!(mView instanceof ViewGroup)) { 3676 return null; 3677 } 3678 return FocusFinder.getInstance().findNextFocus((ViewGroup) mView, focused, direction); 3679 } 3680 3681 public void debug() { 3682 mView.debug(); 3683 } 3684 3685 public void dumpGfxInfo(int[] info) { 3686 if (mView != null) { 3687 getGfxInfo(mView, info); 3688 } else { 3689 info[0] = info[1] = 0; 3690 } 3691 } 3692 3693 private void getGfxInfo(View view, int[] info) { 3694 DisplayList displayList = view.mDisplayList; 3695 info[0]++; 3696 if (displayList != null) { 3697 info[1] += displayList.getSize(); 3698 } 3699 3700 if (view instanceof ViewGroup) { 3701 ViewGroup group = (ViewGroup) view; 3702 3703 int count = group.getChildCount(); 3704 for (int i = 0; i < count; i++) { 3705 getGfxInfo(group.getChildAt(i), info); 3706 } 3707 } 3708 } 3709 3710 public void die(boolean immediate) { 3711 if (immediate) { 3712 doDie(); 3713 } else { 3714 mHandler.sendEmptyMessage(MSG_DIE); 3715 } 3716 } 3717 3718 void doDie() { 3719 checkThread(); 3720 if (LOCAL_LOGV) Log.v(TAG, "DIE in " + this + " of " + mSurface); 3721 synchronized (this) { 3722 if (mAdded) { 3723 mAdded = false; 3724 dispatchDetachedFromWindow(); 3725 } 3726 3727 if (mAdded && !mFirst) { 3728 destroyHardwareRenderer(); 3729 3730 int viewVisibility = mView.getVisibility(); 3731 boolean viewVisibilityChanged = mViewVisibility != viewVisibility; 3732 if (mWindowAttributesChanged || viewVisibilityChanged) { 3733 // If layout params have been changed, first give them 3734 // to the window manager to make sure it has the correct 3735 // animation info. 3736 try { 3737 if ((relayoutWindow(mWindowAttributes, viewVisibility, false) 3738 & WindowManagerImpl.RELAYOUT_RES_FIRST_TIME) != 0) { 3739 sWindowSession.finishDrawing(mWindow); 3740 } 3741 } catch (RemoteException e) { 3742 } 3743 } 3744 3745 mSurface.release(); 3746 } 3747 } 3748 } 3749 3750 public void requestUpdateConfiguration(Configuration config) { 3751 Message msg = mHandler.obtainMessage(MSG_UPDATE_CONFIGURATION, config); 3752 mHandler.sendMessage(msg); 3753 } 3754 3755 private void destroyHardwareRenderer() { 3756 if (mAttachInfo.mHardwareRenderer != null) { 3757 mAttachInfo.mHardwareRenderer.destroy(true); 3758 mAttachInfo.mHardwareRenderer = null; 3759 mAttachInfo.mHardwareAccelerated = false; 3760 } 3761 } 3762 3763 void dispatchImeFinishedEvent(int seq, boolean handled) { 3764 Message msg = mHandler.obtainMessage(MSG_IME_FINISHED_EVENT); 3765 msg.arg1 = seq; 3766 msg.arg2 = handled ? 1 : 0; 3767 mHandler.sendMessage(msg); 3768 } 3769 3770 public void dispatchFinishInputConnection(InputConnection connection) { 3771 Message msg = mHandler.obtainMessage(MSG_FINISH_INPUT_CONNECTION, connection); 3772 mHandler.sendMessage(msg); 3773 } 3774 3775 public void dispatchResized(int w, int h, Rect coveredInsets, 3776 Rect visibleInsets, boolean reportDraw, Configuration newConfig) { 3777 if (DEBUG_LAYOUT) Log.v(TAG, "Resizing " + this + ": w=" + w 3778 + " h=" + h + " coveredInsets=" + coveredInsets.toShortString() 3779 + " visibleInsets=" + visibleInsets.toShortString() 3780 + " reportDraw=" + reportDraw); 3781 Message msg = mHandler.obtainMessage(reportDraw ? MSG_RESIZED_REPORT :MSG_RESIZED); 3782 if (mTranslator != null) { 3783 mTranslator.translateRectInScreenToAppWindow(coveredInsets); 3784 mTranslator.translateRectInScreenToAppWindow(visibleInsets); 3785 w *= mTranslator.applicationInvertedScale; 3786 h *= mTranslator.applicationInvertedScale; 3787 } 3788 msg.arg1 = w; 3789 msg.arg2 = h; 3790 ResizedInfo ri = new ResizedInfo(); 3791 ri.coveredInsets = new Rect(coveredInsets); 3792 ri.visibleInsets = new Rect(visibleInsets); 3793 ri.newConfig = newConfig; 3794 msg.obj = ri; 3795 mHandler.sendMessage(msg); 3796 } 3797 3798 /** 3799 * Represents a pending input event that is waiting in a queue. 3800 * 3801 * Input events are processed in serial order by the timestamp specified by 3802 * {@link InputEvent#getEventTimeNano()}. In general, the input dispatcher delivers 3803 * one input event to the application at a time and waits for the application 3804 * to finish handling it before delivering the next one. 3805 * 3806 * However, because the application or IME can synthesize and inject multiple 3807 * key events at a time without going through the input dispatcher, we end up 3808 * needing a queue on the application's side. 3809 */ 3810 private static final class QueuedInputEvent { 3811 public static final int FLAG_DELIVER_POST_IME = 1; 3812 3813 public QueuedInputEvent mNext; 3814 3815 public InputEvent mEvent; 3816 public InputEventReceiver mReceiver; 3817 public int mFlags; 3818 3819 // Used for latency calculations. 3820 public long mReceiveTimeNanos; 3821 public long mDeliverTimeNanos; 3822 public long mDeliverPostImeTimeNanos; 3823 } 3824 3825 private QueuedInputEvent obtainQueuedInputEvent(InputEvent event, 3826 InputEventReceiver receiver, int flags) { 3827 QueuedInputEvent q = mQueuedInputEventPool; 3828 if (q != null) { 3829 mQueuedInputEventPoolSize -= 1; 3830 mQueuedInputEventPool = q.mNext; 3831 q.mNext = null; 3832 } else { 3833 q = new QueuedInputEvent(); 3834 } 3835 3836 q.mEvent = event; 3837 q.mReceiver = receiver; 3838 q.mFlags = flags; 3839 return q; 3840 } 3841 3842 private void recycleQueuedInputEvent(QueuedInputEvent q) { 3843 q.mEvent = null; 3844 q.mReceiver = null; 3845 3846 if (mQueuedInputEventPoolSize < MAX_QUEUED_INPUT_EVENT_POOL_SIZE) { 3847 mQueuedInputEventPoolSize += 1; 3848 q.mNext = mQueuedInputEventPool; 3849 mQueuedInputEventPool = q; 3850 } 3851 } 3852 3853 void enqueueInputEvent(InputEvent event) { 3854 enqueueInputEvent(event, null, 0, false); 3855 } 3856 3857 void enqueueInputEvent(InputEvent event, 3858 InputEventReceiver receiver, int flags, boolean processImmediately) { 3859 QueuedInputEvent q = obtainQueuedInputEvent(event, receiver, flags); 3860 3861 if (ViewDebug.DEBUG_LATENCY) { 3862 q.mReceiveTimeNanos = System.nanoTime(); 3863 q.mDeliverTimeNanos = 0; 3864 q.mDeliverPostImeTimeNanos = 0; 3865 } 3866 3867 // Always enqueue the input event in order, regardless of its time stamp. 3868 // We do this because the application or the IME may inject key events 3869 // in response to touch events and we want to ensure that the injected keys 3870 // are processed in the order they were received and we cannot trust that 3871 // the time stamp of injected events are monotonic. 3872 QueuedInputEvent last = mFirstPendingInputEvent; 3873 if (last == null) { 3874 mFirstPendingInputEvent = q; 3875 } else { 3876 while (last.mNext != null) { 3877 last = last.mNext; 3878 } 3879 last.mNext = q; 3880 } 3881 3882 if (processImmediately) { 3883 doProcessInputEvents(); 3884 } else { 3885 scheduleProcessInputEvents(); 3886 } 3887 } 3888 3889 private void scheduleProcessInputEvents() { 3890 if (!mProcessInputEventsScheduled) { 3891 mProcessInputEventsScheduled = true; 3892 mHandler.sendEmptyMessage(MSG_PROCESS_INPUT_EVENTS); 3893 } 3894 } 3895 3896 private void doProcessInputEvents() { 3897 while (mCurrentInputEvent == null && mFirstPendingInputEvent != null) { 3898 QueuedInputEvent q = mFirstPendingInputEvent; 3899 mFirstPendingInputEvent = q.mNext; 3900 q.mNext = null; 3901 mCurrentInputEvent = q; 3902 deliverInputEvent(q); 3903 } 3904 3905 // We are done processing all input events that we can process right now 3906 // so we can clear the pending flag immediately. 3907 if (mProcessInputEventsScheduled) { 3908 mProcessInputEventsScheduled = false; 3909 mHandler.removeMessages(MSG_PROCESS_INPUT_EVENTS); 3910 } 3911 } 3912 3913 private void finishInputEvent(QueuedInputEvent q, boolean handled) { 3914 if (q != mCurrentInputEvent) { 3915 throw new IllegalStateException("finished input event out of order"); 3916 } 3917 3918 if (ViewDebug.DEBUG_LATENCY) { 3919 final long now = System.nanoTime(); 3920 final long eventTime = q.mEvent.getEventTimeNano(); 3921 final StringBuilder msg = new StringBuilder(); 3922 msg.append("Spent "); 3923 msg.append((now - q.mReceiveTimeNanos) * 0.000001f); 3924 msg.append("ms processing "); 3925 if (q.mEvent instanceof KeyEvent) { 3926 final KeyEvent keyEvent = (KeyEvent)q.mEvent; 3927 msg.append("key event, action="); 3928 msg.append(KeyEvent.actionToString(keyEvent.getAction())); 3929 } else { 3930 final MotionEvent motionEvent = (MotionEvent)q.mEvent; 3931 msg.append("motion event, action="); 3932 msg.append(MotionEvent.actionToString(motionEvent.getAction())); 3933 msg.append(", historySize="); 3934 msg.append(motionEvent.getHistorySize()); 3935 } 3936 msg.append(", handled="); 3937 msg.append(handled); 3938 msg.append(", received at +"); 3939 msg.append((q.mReceiveTimeNanos - eventTime) * 0.000001f); 3940 if (q.mDeliverTimeNanos != 0) { 3941 msg.append("ms, delivered at +"); 3942 msg.append((q.mDeliverTimeNanos - eventTime) * 0.000001f); 3943 } 3944 if (q.mDeliverPostImeTimeNanos != 0) { 3945 msg.append("ms, delivered post IME at +"); 3946 msg.append((q.mDeliverPostImeTimeNanos - eventTime) * 0.000001f); 3947 } 3948 msg.append("ms, finished at +"); 3949 msg.append((now - eventTime) * 0.000001f); 3950 msg.append("ms."); 3951 Log.d(ViewDebug.DEBUG_LATENCY_TAG, msg.toString()); 3952 } 3953 3954 if (q.mReceiver != null) { 3955 q.mReceiver.finishInputEvent(q.mEvent, handled); 3956 } else { 3957 q.mEvent.recycleIfNeededAfterDispatch(); 3958 } 3959 3960 recycleQueuedInputEvent(q); 3961 3962 mCurrentInputEvent = null; 3963 if (mFirstPendingInputEvent != null) { 3964 scheduleProcessInputEvents(); 3965 } 3966 } 3967 3968 final class FrameRunnable implements Runnable { 3969 @Override 3970 public void run() { 3971 mFrameScheduled = false; 3972 doFrame(); 3973 } 3974 } 3975 final FrameRunnable mFrameRunnable = new FrameRunnable(); 3976 boolean mFrameScheduled; 3977 3978 final class WindowInputEventReceiver extends InputEventReceiver { 3979 public WindowInputEventReceiver(InputChannel inputChannel, Looper looper) { 3980 super(inputChannel, looper); 3981 } 3982 3983 @Override 3984 public void onInputEvent(InputEvent event) { 3985 enqueueInputEvent(event, this, 0, true); 3986 } 3987 3988 @Override 3989 public void onBatchedInputEventPending() { 3990 scheduleFrame(); 3991 } 3992 } 3993 WindowInputEventReceiver mInputEventReceiver; 3994 3995 final class InvalidateOnAnimationRunnable implements Runnable { 3996 private boolean mPosted; 3997 private ArrayList<View> mViews = new ArrayList<View>(); 3998 private ArrayList<AttachInfo.InvalidateInfo> mViewRects = 3999 new ArrayList<AttachInfo.InvalidateInfo>(); 4000 private View[] mTempViews; 4001 private AttachInfo.InvalidateInfo[] mTempViewRects; 4002 4003 public void addView(View view) { 4004 synchronized (this) { 4005 mViews.add(view); 4006 postIfNeededLocked(); 4007 } 4008 } 4009 4010 public void addViewRect(AttachInfo.InvalidateInfo info) { 4011 synchronized (this) { 4012 mViewRects.add(info); 4013 postIfNeededLocked(); 4014 } 4015 } 4016 4017 public void removeView(View view) { 4018 synchronized (this) { 4019 mViews.remove(view); 4020 4021 for (int i = mViewRects.size(); i-- > 0; ) { 4022 AttachInfo.InvalidateInfo info = mViewRects.get(i); 4023 if (info.target == view) { 4024 mViewRects.remove(i); 4025 info.release(); 4026 } 4027 } 4028 4029 if (mPosted && mViews.isEmpty() && mViewRects.isEmpty()) { 4030 mChoreographer.removeAnimationCallbacks(this, null); 4031 mPosted = false; 4032 } 4033 } 4034 } 4035 4036 @Override 4037 public void run() { 4038 final int viewCount; 4039 final int viewRectCount; 4040 synchronized (this) { 4041 mPosted = false; 4042 4043 viewCount = mViews.size(); 4044 if (viewCount != 0) { 4045 mTempViews = mViews.toArray(mTempViews != null 4046 ? mTempViews : new View[viewCount]); 4047 mViews.clear(); 4048 } 4049 4050 viewRectCount = mViewRects.size(); 4051 if (viewRectCount != 0) { 4052 mTempViewRects = mViewRects.toArray(mTempViewRects != null 4053 ? mTempViewRects : new AttachInfo.InvalidateInfo[viewRectCount]); 4054 mViewRects.clear(); 4055 } 4056 } 4057 4058 for (int i = 0; i < viewCount; i++) { 4059 mTempViews[i].invalidate(); 4060 } 4061 4062 for (int i = 0; i < viewRectCount; i++) { 4063 final View.AttachInfo.InvalidateInfo info = mTempViewRects[i]; 4064 info.target.invalidate(info.left, info.top, info.right, info.bottom); 4065 info.release(); 4066 } 4067 } 4068 4069 private void postIfNeededLocked() { 4070 if (!mPosted) { 4071 mChoreographer.postAnimationCallback(this, null); 4072 mPosted = true; 4073 } 4074 } 4075 } 4076 final InvalidateOnAnimationRunnable mInvalidateOnAnimationRunnable = 4077 new InvalidateOnAnimationRunnable(); 4078 4079 public void dispatchInvalidateDelayed(View view, long delayMilliseconds) { 4080 Message msg = mHandler.obtainMessage(MSG_INVALIDATE, view); 4081 mHandler.sendMessageDelayed(msg, delayMilliseconds); 4082 } 4083 4084 public void dispatchInvalidateRectDelayed(AttachInfo.InvalidateInfo info, 4085 long delayMilliseconds) { 4086 final Message msg = mHandler.obtainMessage(MSG_INVALIDATE_RECT, info); 4087 mHandler.sendMessageDelayed(msg, delayMilliseconds); 4088 } 4089 4090 public void dispatchInvalidateOnAnimation(View view) { 4091 mInvalidateOnAnimationRunnable.addView(view); 4092 } 4093 4094 public void dispatchInvalidateRectOnAnimation(AttachInfo.InvalidateInfo info) { 4095 mInvalidateOnAnimationRunnable.addViewRect(info); 4096 } 4097 4098 public void cancelInvalidate(View view) { 4099 mHandler.removeMessages(MSG_INVALIDATE, view); 4100 // fixme: might leak the AttachInfo.InvalidateInfo objects instead of returning 4101 // them to the pool 4102 mHandler.removeMessages(MSG_INVALIDATE_RECT, view); 4103 mInvalidateOnAnimationRunnable.removeView(view); 4104 } 4105 4106 public void dispatchKey(KeyEvent event) { 4107 Message msg = mHandler.obtainMessage(MSG_DISPATCH_KEY, event); 4108 msg.setAsynchronous(true); 4109 mHandler.sendMessage(msg); 4110 } 4111 4112 public void dispatchKeyFromIme(KeyEvent event) { 4113 Message msg = mHandler.obtainMessage(MSG_DISPATCH_KEY_FROM_IME, event); 4114 msg.setAsynchronous(true); 4115 mHandler.sendMessage(msg); 4116 } 4117 4118 public void dispatchAppVisibility(boolean visible) { 4119 Message msg = mHandler.obtainMessage(MSG_DISPATCH_APP_VISIBILITY); 4120 msg.arg1 = visible ? 1 : 0; 4121 mHandler.sendMessage(msg); 4122 } 4123 4124 public void dispatchGetNewSurface() { 4125 Message msg = mHandler.obtainMessage(MSG_DISPATCH_GET_NEW_SURFACE); 4126 mHandler.sendMessage(msg); 4127 } 4128 4129 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 4130 Message msg = Message.obtain(); 4131 msg.what = MSG_WINDOW_FOCUS_CHANGED; 4132 msg.arg1 = hasFocus ? 1 : 0; 4133 msg.arg2 = inTouchMode ? 1 : 0; 4134 mHandler.sendMessage(msg); 4135 } 4136 4137 public void dispatchCloseSystemDialogs(String reason) { 4138 Message msg = Message.obtain(); 4139 msg.what = MSG_CLOSE_SYSTEM_DIALOGS; 4140 msg.obj = reason; 4141 mHandler.sendMessage(msg); 4142 } 4143 4144 public void dispatchDragEvent(DragEvent event) { 4145 final int what; 4146 if (event.getAction() == DragEvent.ACTION_DRAG_LOCATION) { 4147 what = MSG_DISPATCH_DRAG_LOCATION_EVENT; 4148 mHandler.removeMessages(what); 4149 } else { 4150 what = MSG_DISPATCH_DRAG_EVENT; 4151 } 4152 Message msg = mHandler.obtainMessage(what, event); 4153 mHandler.sendMessage(msg); 4154 } 4155 4156 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 4157 int localValue, int localChanges) { 4158 SystemUiVisibilityInfo args = new SystemUiVisibilityInfo(); 4159 args.seq = seq; 4160 args.globalVisibility = globalVisibility; 4161 args.localValue = localValue; 4162 args.localChanges = localChanges; 4163 mHandler.sendMessage(mHandler.obtainMessage(MSG_DISPATCH_SYSTEM_UI_VISIBILITY, args)); 4164 } 4165 4166 public void dispatchCheckFocus() { 4167 if (!mHandler.hasMessages(MSG_CHECK_FOCUS)) { 4168 // This will result in a call to checkFocus() below. 4169 mHandler.sendEmptyMessage(MSG_CHECK_FOCUS); 4170 } 4171 } 4172 4173 /** 4174 * Post a callback to send a 4175 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 4176 * This event is send at most once every 4177 * {@link ViewConfiguration#getSendRecurringAccessibilityEventsInterval()}. 4178 */ 4179 private void postSendWindowContentChangedCallback() { 4180 if (mSendWindowContentChangedAccessibilityEvent == null) { 4181 mSendWindowContentChangedAccessibilityEvent = 4182 new SendWindowContentChangedAccessibilityEvent(); 4183 } 4184 if (!mSendWindowContentChangedAccessibilityEvent.mIsPending) { 4185 mSendWindowContentChangedAccessibilityEvent.mIsPending = true; 4186 mHandler.postDelayed(mSendWindowContentChangedAccessibilityEvent, 4187 ViewConfiguration.getSendRecurringAccessibilityEventsInterval()); 4188 } 4189 } 4190 4191 /** 4192 * Remove a posted callback to send a 4193 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 4194 */ 4195 private void removeSendWindowContentChangedCallback() { 4196 if (mSendWindowContentChangedAccessibilityEvent != null) { 4197 mHandler.removeCallbacks(mSendWindowContentChangedAccessibilityEvent); 4198 } 4199 } 4200 4201 public boolean showContextMenuForChild(View originalView) { 4202 return false; 4203 } 4204 4205 public ActionMode startActionModeForChild(View originalView, ActionMode.Callback callback) { 4206 return null; 4207 } 4208 4209 public void createContextMenu(ContextMenu menu) { 4210 } 4211 4212 public void childDrawableStateChanged(View child) { 4213 } 4214 4215 public boolean requestSendAccessibilityEvent(View child, AccessibilityEvent event) { 4216 if (mView == null) { 4217 return false; 4218 } 4219 mAccessibilityManager.sendAccessibilityEvent(event); 4220 return true; 4221 } 4222 4223 void checkThread() { 4224 if (mThread != Thread.currentThread()) { 4225 throw new CalledFromWrongThreadException( 4226 "Only the original thread that created a view hierarchy can touch its views."); 4227 } 4228 } 4229 4230 public void requestDisallowInterceptTouchEvent(boolean disallowIntercept) { 4231 // ViewAncestor never intercepts touch event, so this can be a no-op 4232 } 4233 4234 public boolean requestChildRectangleOnScreen(View child, Rect rectangle, 4235 boolean immediate) { 4236 return scrollToRectOrFocus(rectangle, immediate); 4237 } 4238 4239 public void childHasTransientStateChanged(View child, boolean hasTransientState) { 4240 // Do nothing. 4241 } 4242 4243 class TakenSurfaceHolder extends BaseSurfaceHolder { 4244 @Override 4245 public boolean onAllowLockCanvas() { 4246 return mDrawingAllowed; 4247 } 4248 4249 @Override 4250 public void onRelayoutContainer() { 4251 // Not currently interesting -- from changing between fixed and layout size. 4252 } 4253 4254 public void setFormat(int format) { 4255 ((RootViewSurfaceTaker)mView).setSurfaceFormat(format); 4256 } 4257 4258 public void setType(int type) { 4259 ((RootViewSurfaceTaker)mView).setSurfaceType(type); 4260 } 4261 4262 @Override 4263 public void onUpdateSurface() { 4264 // We take care of format and type changes on our own. 4265 throw new IllegalStateException("Shouldn't be here"); 4266 } 4267 4268 public boolean isCreating() { 4269 return mIsCreating; 4270 } 4271 4272 @Override 4273 public void setFixedSize(int width, int height) { 4274 throw new UnsupportedOperationException( 4275 "Currently only support sizing from layout"); 4276 } 4277 4278 public void setKeepScreenOn(boolean screenOn) { 4279 ((RootViewSurfaceTaker)mView).setSurfaceKeepScreenOn(screenOn); 4280 } 4281 } 4282 4283 static class InputMethodCallback extends IInputMethodCallback.Stub { 4284 private WeakReference<ViewRootImpl> mViewAncestor; 4285 4286 public InputMethodCallback(ViewRootImpl viewAncestor) { 4287 mViewAncestor = new WeakReference<ViewRootImpl>(viewAncestor); 4288 } 4289 4290 public void finishedEvent(int seq, boolean handled) { 4291 final ViewRootImpl viewAncestor = mViewAncestor.get(); 4292 if (viewAncestor != null) { 4293 viewAncestor.dispatchImeFinishedEvent(seq, handled); 4294 } 4295 } 4296 4297 public void sessionCreated(IInputMethodSession session) { 4298 // Stub -- not for use in the client. 4299 } 4300 } 4301 4302 static class W extends IWindow.Stub { 4303 private final WeakReference<ViewRootImpl> mViewAncestor; 4304 4305 W(ViewRootImpl viewAncestor) { 4306 mViewAncestor = new WeakReference<ViewRootImpl>(viewAncestor); 4307 } 4308 4309 public void resized(int w, int h, Rect coveredInsets, Rect visibleInsets, 4310 boolean reportDraw, Configuration newConfig) { 4311 final ViewRootImpl viewAncestor = mViewAncestor.get(); 4312 if (viewAncestor != null) { 4313 viewAncestor.dispatchResized(w, h, coveredInsets, visibleInsets, reportDraw, 4314 newConfig); 4315 } 4316 } 4317 4318 public void dispatchAppVisibility(boolean visible) { 4319 final ViewRootImpl viewAncestor = mViewAncestor.get(); 4320 if (viewAncestor != null) { 4321 viewAncestor.dispatchAppVisibility(visible); 4322 } 4323 } 4324 4325 public void dispatchGetNewSurface() { 4326 final ViewRootImpl viewAncestor = mViewAncestor.get(); 4327 if (viewAncestor != null) { 4328 viewAncestor.dispatchGetNewSurface(); 4329 } 4330 } 4331 4332 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 4333 final ViewRootImpl viewAncestor = mViewAncestor.get(); 4334 if (viewAncestor != null) { 4335 viewAncestor.windowFocusChanged(hasFocus, inTouchMode); 4336 } 4337 } 4338 4339 private static int checkCallingPermission(String permission) { 4340 try { 4341 return ActivityManagerNative.getDefault().checkPermission( 4342 permission, Binder.getCallingPid(), Binder.getCallingUid()); 4343 } catch (RemoteException e) { 4344 return PackageManager.PERMISSION_DENIED; 4345 } 4346 } 4347 4348 public void executeCommand(String command, String parameters, ParcelFileDescriptor out) { 4349 final ViewRootImpl viewAncestor = mViewAncestor.get(); 4350 if (viewAncestor != null) { 4351 final View view = viewAncestor.mView; 4352 if (view != null) { 4353 if (checkCallingPermission(Manifest.permission.DUMP) != 4354 PackageManager.PERMISSION_GRANTED) { 4355 throw new SecurityException("Insufficient permissions to invoke" 4356 + " executeCommand() from pid=" + Binder.getCallingPid() 4357 + ", uid=" + Binder.getCallingUid()); 4358 } 4359 4360 OutputStream clientStream = null; 4361 try { 4362 clientStream = new ParcelFileDescriptor.AutoCloseOutputStream(out); 4363 ViewDebug.dispatchCommand(view, command, parameters, clientStream); 4364 } catch (IOException e) { 4365 e.printStackTrace(); 4366 } finally { 4367 if (clientStream != null) { 4368 try { 4369 clientStream.close(); 4370 } catch (IOException e) { 4371 e.printStackTrace(); 4372 } 4373 } 4374 } 4375 } 4376 } 4377 } 4378 4379 public void closeSystemDialogs(String reason) { 4380 final ViewRootImpl viewAncestor = mViewAncestor.get(); 4381 if (viewAncestor != null) { 4382 viewAncestor.dispatchCloseSystemDialogs(reason); 4383 } 4384 } 4385 4386 public void dispatchWallpaperOffsets(float x, float y, float xStep, float yStep, 4387 boolean sync) { 4388 if (sync) { 4389 try { 4390 sWindowSession.wallpaperOffsetsComplete(asBinder()); 4391 } catch (RemoteException e) { 4392 } 4393 } 4394 } 4395 4396 public void dispatchWallpaperCommand(String action, int x, int y, 4397 int z, Bundle extras, boolean sync) { 4398 if (sync) { 4399 try { 4400 sWindowSession.wallpaperCommandComplete(asBinder(), null); 4401 } catch (RemoteException e) { 4402 } 4403 } 4404 } 4405 4406 /* Drag/drop */ 4407 public void dispatchDragEvent(DragEvent event) { 4408 final ViewRootImpl viewAncestor = mViewAncestor.get(); 4409 if (viewAncestor != null) { 4410 viewAncestor.dispatchDragEvent(event); 4411 } 4412 } 4413 4414 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 4415 int localValue, int localChanges) { 4416 final ViewRootImpl viewAncestor = mViewAncestor.get(); 4417 if (viewAncestor != null) { 4418 viewAncestor.dispatchSystemUiVisibilityChanged(seq, globalVisibility, 4419 localValue, localChanges); 4420 } 4421 } 4422 } 4423 4424 /** 4425 * Maintains state information for a single trackball axis, generating 4426 * discrete (DPAD) movements based on raw trackball motion. 4427 */ 4428 static final class TrackballAxis { 4429 /** 4430 * The maximum amount of acceleration we will apply. 4431 */ 4432 static final float MAX_ACCELERATION = 20; 4433 4434 /** 4435 * The maximum amount of time (in milliseconds) between events in order 4436 * for us to consider the user to be doing fast trackball movements, 4437 * and thus apply an acceleration. 4438 */ 4439 static final long FAST_MOVE_TIME = 150; 4440 4441 /** 4442 * Scaling factor to the time (in milliseconds) between events to how 4443 * much to multiple/divide the current acceleration. When movement 4444 * is < FAST_MOVE_TIME this multiplies the acceleration; when > 4445 * FAST_MOVE_TIME it divides it. 4446 */ 4447 static final float ACCEL_MOVE_SCALING_FACTOR = (1.0f/40); 4448 4449 float position; 4450 float absPosition; 4451 float acceleration = 1; 4452 long lastMoveTime = 0; 4453 int step; 4454 int dir; 4455 int nonAccelMovement; 4456 4457 void reset(int _step) { 4458 position = 0; 4459 acceleration = 1; 4460 lastMoveTime = 0; 4461 step = _step; 4462 dir = 0; 4463 } 4464 4465 /** 4466 * Add trackball movement into the state. If the direction of movement 4467 * has been reversed, the state is reset before adding the 4468 * movement (so that you don't have to compensate for any previously 4469 * collected movement before see the result of the movement in the 4470 * new direction). 4471 * 4472 * @return Returns the absolute value of the amount of movement 4473 * collected so far. 4474 */ 4475 float collect(float off, long time, String axis) { 4476 long normTime; 4477 if (off > 0) { 4478 normTime = (long)(off * FAST_MOVE_TIME); 4479 if (dir < 0) { 4480 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to positive!"); 4481 position = 0; 4482 step = 0; 4483 acceleration = 1; 4484 lastMoveTime = 0; 4485 } 4486 dir = 1; 4487 } else if (off < 0) { 4488 normTime = (long)((-off) * FAST_MOVE_TIME); 4489 if (dir > 0) { 4490 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to negative!"); 4491 position = 0; 4492 step = 0; 4493 acceleration = 1; 4494 lastMoveTime = 0; 4495 } 4496 dir = -1; 4497 } else { 4498 normTime = 0; 4499 } 4500 4501 // The number of milliseconds between each movement that is 4502 // considered "normal" and will not result in any acceleration 4503 // or deceleration, scaled by the offset we have here. 4504 if (normTime > 0) { 4505 long delta = time - lastMoveTime; 4506 lastMoveTime = time; 4507 float acc = acceleration; 4508 if (delta < normTime) { 4509 // The user is scrolling rapidly, so increase acceleration. 4510 float scale = (normTime-delta) * ACCEL_MOVE_SCALING_FACTOR; 4511 if (scale > 1) acc *= scale; 4512 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " accelerate: off=" 4513 + off + " normTime=" + normTime + " delta=" + delta 4514 + " scale=" + scale + " acc=" + acc); 4515 acceleration = acc < MAX_ACCELERATION ? acc : MAX_ACCELERATION; 4516 } else { 4517 // The user is scrolling slowly, so decrease acceleration. 4518 float scale = (delta-normTime) * ACCEL_MOVE_SCALING_FACTOR; 4519 if (scale > 1) acc /= scale; 4520 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " deccelerate: off=" 4521 + off + " normTime=" + normTime + " delta=" + delta 4522 + " scale=" + scale + " acc=" + acc); 4523 acceleration = acc > 1 ? acc : 1; 4524 } 4525 } 4526 position += off; 4527 return (absPosition = Math.abs(position)); 4528 } 4529 4530 /** 4531 * Generate the number of discrete movement events appropriate for 4532 * the currently collected trackball movement. 4533 * 4534 * @param precision The minimum movement required to generate the 4535 * first discrete movement. 4536 * 4537 * @return Returns the number of discrete movements, either positive 4538 * or negative, or 0 if there is not enough trackball movement yet 4539 * for a discrete movement. 4540 */ 4541 int generate(float precision) { 4542 int movement = 0; 4543 nonAccelMovement = 0; 4544 do { 4545 final int dir = position >= 0 ? 1 : -1; 4546 switch (step) { 4547 // If we are going to execute the first step, then we want 4548 // to do this as soon as possible instead of waiting for 4549 // a full movement, in order to make things look responsive. 4550 case 0: 4551 if (absPosition < precision) { 4552 return movement; 4553 } 4554 movement += dir; 4555 nonAccelMovement += dir; 4556 step = 1; 4557 break; 4558 // If we have generated the first movement, then we need 4559 // to wait for the second complete trackball motion before 4560 // generating the second discrete movement. 4561 case 1: 4562 if (absPosition < 2) { 4563 return movement; 4564 } 4565 movement += dir; 4566 nonAccelMovement += dir; 4567 position += dir > 0 ? -2 : 2; 4568 absPosition = Math.abs(position); 4569 step = 2; 4570 break; 4571 // After the first two, we generate discrete movements 4572 // consistently with the trackball, applying an acceleration 4573 // if the trackball is moving quickly. This is a simple 4574 // acceleration on top of what we already compute based 4575 // on how quickly the wheel is being turned, to apply 4576 // a longer increasing acceleration to continuous movement 4577 // in one direction. 4578 default: 4579 if (absPosition < 1) { 4580 return movement; 4581 } 4582 movement += dir; 4583 position += dir >= 0 ? -1 : 1; 4584 absPosition = Math.abs(position); 4585 float acc = acceleration; 4586 acc *= 1.1f; 4587 acceleration = acc < MAX_ACCELERATION ? acc : acceleration; 4588 break; 4589 } 4590 } while (true); 4591 } 4592 } 4593 4594 public static final class CalledFromWrongThreadException extends AndroidRuntimeException { 4595 public CalledFromWrongThreadException(String msg) { 4596 super(msg); 4597 } 4598 } 4599 4600 private SurfaceHolder mHolder = new SurfaceHolder() { 4601 // we only need a SurfaceHolder for opengl. it would be nice 4602 // to implement everything else though, especially the callback 4603 // support (opengl doesn't make use of it right now, but eventually 4604 // will). 4605 public Surface getSurface() { 4606 return mSurface; 4607 } 4608 4609 public boolean isCreating() { 4610 return false; 4611 } 4612 4613 public void addCallback(Callback callback) { 4614 } 4615 4616 public void removeCallback(Callback callback) { 4617 } 4618 4619 public void setFixedSize(int width, int height) { 4620 } 4621 4622 public void setSizeFromLayout() { 4623 } 4624 4625 public void setFormat(int format) { 4626 } 4627 4628 public void setType(int type) { 4629 } 4630 4631 public void setKeepScreenOn(boolean screenOn) { 4632 } 4633 4634 public Canvas lockCanvas() { 4635 return null; 4636 } 4637 4638 public Canvas lockCanvas(Rect dirty) { 4639 return null; 4640 } 4641 4642 public void unlockCanvasAndPost(Canvas canvas) { 4643 } 4644 public Rect getSurfaceFrame() { 4645 return null; 4646 } 4647 }; 4648 4649 static RunQueue getRunQueue() { 4650 RunQueue rq = sRunQueues.get(); 4651 if (rq != null) { 4652 return rq; 4653 } 4654 rq = new RunQueue(); 4655 sRunQueues.set(rq); 4656 return rq; 4657 } 4658 4659 /** 4660 * The run queue is used to enqueue pending work from Views when no Handler is 4661 * attached. The work is executed during the next call to performTraversals on 4662 * the thread. 4663 * @hide 4664 */ 4665 static final class RunQueue { 4666 private final ArrayList<HandlerAction> mActions = new ArrayList<HandlerAction>(); 4667 4668 void post(Runnable action) { 4669 postDelayed(action, 0); 4670 } 4671 4672 void postDelayed(Runnable action, long delayMillis) { 4673 HandlerAction handlerAction = new HandlerAction(); 4674 handlerAction.action = action; 4675 handlerAction.delay = delayMillis; 4676 4677 synchronized (mActions) { 4678 mActions.add(handlerAction); 4679 } 4680 } 4681 4682 void removeCallbacks(Runnable action) { 4683 final HandlerAction handlerAction = new HandlerAction(); 4684 handlerAction.action = action; 4685 4686 synchronized (mActions) { 4687 final ArrayList<HandlerAction> actions = mActions; 4688 4689 while (actions.remove(handlerAction)) { 4690 // Keep going 4691 } 4692 } 4693 } 4694 4695 void executeActions(Handler handler) { 4696 synchronized (mActions) { 4697 final ArrayList<HandlerAction> actions = mActions; 4698 final int count = actions.size(); 4699 4700 for (int i = 0; i < count; i++) { 4701 final HandlerAction handlerAction = actions.get(i); 4702 handler.postDelayed(handlerAction.action, handlerAction.delay); 4703 } 4704 4705 actions.clear(); 4706 } 4707 } 4708 4709 private static class HandlerAction { 4710 Runnable action; 4711 long delay; 4712 4713 @Override 4714 public boolean equals(Object o) { 4715 if (this == o) return true; 4716 if (o == null || getClass() != o.getClass()) return false; 4717 4718 HandlerAction that = (HandlerAction) o; 4719 return !(action != null ? !action.equals(that.action) : that.action != null); 4720 4721 } 4722 4723 @Override 4724 public int hashCode() { 4725 int result = action != null ? action.hashCode() : 0; 4726 result = 31 * result + (int) (delay ^ (delay >>> 32)); 4727 return result; 4728 } 4729 } 4730 } 4731 4732 /** 4733 * Class for managing the accessibility interaction connection 4734 * based on the global accessibility state. 4735 */ 4736 final class AccessibilityInteractionConnectionManager 4737 implements AccessibilityStateChangeListener { 4738 public void onAccessibilityStateChanged(boolean enabled) { 4739 if (enabled) { 4740 ensureConnection(); 4741 if (mAttachInfo != null && mAttachInfo.mHasWindowFocus) { 4742 mView.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 4743 View focusedView = mView.findFocus(); 4744 if (focusedView != null && focusedView != mView) { 4745 focusedView.sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_FOCUSED); 4746 } 4747 } 4748 } else { 4749 ensureNoConnection(); 4750 } 4751 } 4752 4753 public void ensureConnection() { 4754 if (mAttachInfo != null) { 4755 final boolean registered = 4756 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED; 4757 if (!registered) { 4758 mAttachInfo.mAccessibilityWindowId = 4759 mAccessibilityManager.addAccessibilityInteractionConnection(mWindow, 4760 new AccessibilityInteractionConnection(ViewRootImpl.this)); 4761 } 4762 } 4763 } 4764 4765 public void ensureNoConnection() { 4766 final boolean registered = 4767 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED; 4768 if (registered) { 4769 mAttachInfo.mAccessibilityWindowId = AccessibilityNodeInfo.UNDEFINED; 4770 mAccessibilityManager.removeAccessibilityInteractionConnection(mWindow); 4771 } 4772 } 4773 } 4774 4775 /** 4776 * This class is an interface this ViewAncestor provides to the 4777 * AccessibilityManagerService to the latter can interact with 4778 * the view hierarchy in this ViewAncestor. 4779 */ 4780 static final class AccessibilityInteractionConnection 4781 extends IAccessibilityInteractionConnection.Stub { 4782 private final WeakReference<ViewRootImpl> mViewRootImpl; 4783 4784 AccessibilityInteractionConnection(ViewRootImpl viewRootImpl) { 4785 mViewRootImpl = new WeakReference<ViewRootImpl>(viewRootImpl); 4786 } 4787 4788 public void findAccessibilityNodeInfoByAccessibilityId(long accessibilityNodeId, 4789 int interactionId, IAccessibilityInteractionConnectionCallback callback, 4790 int prefetchFlags, int interrogatingPid, long interrogatingTid) { 4791 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 4792 if (viewRootImpl != null && viewRootImpl.mView != null) { 4793 viewRootImpl.getAccessibilityInteractionController() 4794 .findAccessibilityNodeInfoByAccessibilityIdClientThread(accessibilityNodeId, 4795 interactionId, callback, prefetchFlags, interrogatingPid, interrogatingTid); 4796 } else { 4797 // We cannot make the call and notify the caller so it does not wait. 4798 try { 4799 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 4800 } catch (RemoteException re) { 4801 /* best effort - ignore */ 4802 } 4803 } 4804 } 4805 4806 public void performAccessibilityAction(long accessibilityNodeId, int action, 4807 int interactionId, IAccessibilityInteractionConnectionCallback callback, 4808 int interogatingPid, long interrogatingTid) { 4809 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 4810 if (viewRootImpl != null && viewRootImpl.mView != null) { 4811 viewRootImpl.getAccessibilityInteractionController() 4812 .performAccessibilityActionClientThread(accessibilityNodeId, action, 4813 interactionId, callback, interogatingPid, interrogatingTid); 4814 } else { 4815 // We cannot make the call and notify the caller so it does not 4816 try { 4817 callback.setPerformAccessibilityActionResult(false, interactionId); 4818 } catch (RemoteException re) { 4819 /* best effort - ignore */ 4820 } 4821 } 4822 } 4823 4824 public void findAccessibilityNodeInfoByViewId(long accessibilityNodeId, int viewId, 4825 int interactionId, IAccessibilityInteractionConnectionCallback callback, 4826 int interrogatingPid, long interrogatingTid) { 4827 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 4828 if (viewRootImpl != null && viewRootImpl.mView != null) { 4829 viewRootImpl.getAccessibilityInteractionController() 4830 .findAccessibilityNodeInfoByViewIdClientThread(accessibilityNodeId, viewId, 4831 interactionId, callback, interrogatingPid, interrogatingTid); 4832 } else { 4833 // We cannot make the call and notify the caller so it does not 4834 try { 4835 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 4836 } catch (RemoteException re) { 4837 /* best effort - ignore */ 4838 } 4839 } 4840 } 4841 4842 public void findAccessibilityNodeInfosByText(long accessibilityNodeId, String text, 4843 int interactionId, IAccessibilityInteractionConnectionCallback callback, 4844 int interrogatingPid, long interrogatingTid) { 4845 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 4846 if (viewRootImpl != null && viewRootImpl.mView != null) { 4847 viewRootImpl.getAccessibilityInteractionController() 4848 .findAccessibilityNodeInfosByTextClientThread(accessibilityNodeId, text, 4849 interactionId, callback, interrogatingPid, interrogatingTid); 4850 } else { 4851 // We cannot make the call and notify the caller so it does not 4852 try { 4853 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 4854 } catch (RemoteException re) { 4855 /* best effort - ignore */ 4856 } 4857 } 4858 } 4859 } 4860 4861 /** 4862 * Class for managing accessibility interactions initiated from the system 4863 * and targeting the view hierarchy. A *ClientThread method is to be 4864 * called from the interaction connection this ViewAncestor gives the 4865 * system to talk to it and a corresponding *UiThread method that is executed 4866 * on the UI thread. 4867 */ 4868 final class AccessibilityInteractionController { 4869 private static final int POOL_SIZE = 5; 4870 4871 private ArrayList<AccessibilityNodeInfo> mTempAccessibilityNodeInfoList = 4872 new ArrayList<AccessibilityNodeInfo>(); 4873 4874 // Reusable poolable arguments for interacting with the view hierarchy 4875 // to fit more arguments than Message and to avoid sharing objects between 4876 // two messages since several threads can send messages concurrently. 4877 private final Pool<SomeArgs> mPool = Pools.synchronizedPool(Pools.finitePool( 4878 new PoolableManager<SomeArgs>() { 4879 public SomeArgs newInstance() { 4880 return new SomeArgs(); 4881 } 4882 4883 public void onAcquired(SomeArgs info) { 4884 /* do nothing */ 4885 } 4886 4887 public void onReleased(SomeArgs info) { 4888 info.clear(); 4889 } 4890 }, POOL_SIZE) 4891 ); 4892 4893 public class SomeArgs implements Poolable<SomeArgs> { 4894 private SomeArgs mNext; 4895 private boolean mIsPooled; 4896 4897 public Object arg1; 4898 public Object arg2; 4899 public int argi1; 4900 public int argi2; 4901 public int argi3; 4902 4903 public SomeArgs getNextPoolable() { 4904 return mNext; 4905 } 4906 4907 public boolean isPooled() { 4908 return mIsPooled; 4909 } 4910 4911 public void setNextPoolable(SomeArgs args) { 4912 mNext = args; 4913 } 4914 4915 public void setPooled(boolean isPooled) { 4916 mIsPooled = isPooled; 4917 } 4918 4919 private void clear() { 4920 arg1 = null; 4921 arg2 = null; 4922 argi1 = 0; 4923 argi2 = 0; 4924 argi3 = 0; 4925 } 4926 } 4927 4928 public void findAccessibilityNodeInfoByAccessibilityIdClientThread( 4929 long accessibilityNodeId, int interactionId, 4930 IAccessibilityInteractionConnectionCallback callback, int prefetchFlags, 4931 int interrogatingPid, long interrogatingTid) { 4932 Message message = mHandler.obtainMessage(); 4933 message.what = MSG_FIND_ACCESSIBLITY_NODE_INFO_BY_ACCESSIBILITY_ID; 4934 message.arg1 = prefetchFlags; 4935 SomeArgs args = mPool.acquire(); 4936 args.argi1 = AccessibilityNodeInfo.getAccessibilityViewId(accessibilityNodeId); 4937 args.argi2 = AccessibilityNodeInfo.getVirtualDescendantId(accessibilityNodeId); 4938 args.argi3 = interactionId; 4939 args.arg1 = callback; 4940 message.obj = args; 4941 // If the interrogation is performed by the same thread as the main UI 4942 // thread in this process, set the message as a static reference so 4943 // after this call completes the same thread but in the interrogating 4944 // client can handle the message to generate the result. 4945 if (interrogatingPid == Process.myPid() 4946 && interrogatingTid == Looper.getMainLooper().getThread().getId()) { 4947 AccessibilityInteractionClient.getInstanceForThread( 4948 interrogatingTid).setSameThreadMessage(message); 4949 } else { 4950 mHandler.sendMessage(message); 4951 } 4952 } 4953 4954 public void findAccessibilityNodeInfoByAccessibilityIdUiThread(Message message) { 4955 final int prefetchFlags = message.arg1; 4956 SomeArgs args = (SomeArgs) message.obj; 4957 final int accessibilityViewId = args.argi1; 4958 final int virtualDescendantId = args.argi2; 4959 final int interactionId = args.argi3; 4960 final IAccessibilityInteractionConnectionCallback callback = 4961 (IAccessibilityInteractionConnectionCallback) args.arg1; 4962 mPool.release(args); 4963 List<AccessibilityNodeInfo> infos = mTempAccessibilityNodeInfoList; 4964 infos.clear(); 4965 try { 4966 View target = null; 4967 if (accessibilityViewId == AccessibilityNodeInfo.UNDEFINED) { 4968 target = ViewRootImpl.this.mView; 4969 } else { 4970 target = findViewByAccessibilityId(accessibilityViewId); 4971 } 4972 if (target != null && target.getVisibility() == View.VISIBLE) { 4973 getAccessibilityNodePrefetcher().prefetchAccessibilityNodeInfos(target, 4974 virtualDescendantId, prefetchFlags, infos); 4975 } 4976 } finally { 4977 try { 4978 callback.setFindAccessibilityNodeInfosResult(infos, interactionId); 4979 infos.clear(); 4980 } catch (RemoteException re) { 4981 /* ignore - the other side will time out */ 4982 } 4983 } 4984 } 4985 4986 public void findAccessibilityNodeInfoByViewIdClientThread(long accessibilityNodeId, 4987 int viewId, int interactionId, IAccessibilityInteractionConnectionCallback callback, 4988 int interrogatingPid, long interrogatingTid) { 4989 Message message = mHandler.obtainMessage(); 4990 message.what = MSG_FIND_ACCESSIBLITY_NODE_INFO_BY_VIEW_ID; 4991 message.arg1 = AccessibilityNodeInfo.getAccessibilityViewId(accessibilityNodeId); 4992 SomeArgs args = mPool.acquire(); 4993 args.argi1 = viewId; 4994 args.argi2 = interactionId; 4995 args.arg1 = callback; 4996 message.obj = args; 4997 // If the interrogation is performed by the same thread as the main UI 4998 // thread in this process, set the message as a static reference so 4999 // after this call completes the same thread but in the interrogating 5000 // client can handle the message to generate the result. 5001 if (interrogatingPid == Process.myPid() 5002 && interrogatingTid == Looper.getMainLooper().getThread().getId()) { 5003 AccessibilityInteractionClient.getInstanceForThread( 5004 interrogatingTid).setSameThreadMessage(message); 5005 } else { 5006 mHandler.sendMessage(message); 5007 } 5008 } 5009 5010 public void findAccessibilityNodeInfoByViewIdUiThread(Message message) { 5011 final int accessibilityViewId = message.arg1; 5012 SomeArgs args = (SomeArgs) message.obj; 5013 final int viewId = args.argi1; 5014 final int interactionId = args.argi2; 5015 final IAccessibilityInteractionConnectionCallback callback = 5016 (IAccessibilityInteractionConnectionCallback) args.arg1; 5017 mPool.release(args); 5018 AccessibilityNodeInfo info = null; 5019 try { 5020 View root = null; 5021 if (accessibilityViewId != AccessibilityNodeInfo.UNDEFINED) { 5022 root = findViewByAccessibilityId(accessibilityViewId); 5023 } else { 5024 root = ViewRootImpl.this.mView; 5025 } 5026 if (root != null) { 5027 View target = root.findViewById(viewId); 5028 if (target != null && target.getVisibility() == View.VISIBLE) { 5029 info = target.createAccessibilityNodeInfo(); 5030 } 5031 } 5032 } finally { 5033 try { 5034 callback.setFindAccessibilityNodeInfoResult(info, interactionId); 5035 } catch (RemoteException re) { 5036 /* ignore - the other side will time out */ 5037 } 5038 } 5039 } 5040 5041 public void findAccessibilityNodeInfosByTextClientThread(long accessibilityNodeId, 5042 String text, int interactionId, 5043 IAccessibilityInteractionConnectionCallback callback, int interrogatingPid, 5044 long interrogatingTid) { 5045 Message message = mHandler.obtainMessage(); 5046 message.what = MSG_FIND_ACCESSIBLITY_NODE_INFO_BY_TEXT; 5047 SomeArgs args = mPool.acquire(); 5048 args.arg1 = text; 5049 args.argi1 = AccessibilityNodeInfo.getAccessibilityViewId(accessibilityNodeId); 5050 args.argi2 = AccessibilityNodeInfo.getVirtualDescendantId(accessibilityNodeId); 5051 args.argi3 = interactionId; 5052 args.arg2 = callback; 5053 message.obj = args; 5054 // If the interrogation is performed by the same thread as the main UI 5055 // thread in this process, set the message as a static reference so 5056 // after this call completes the same thread but in the interrogating 5057 // client can handle the message to generate the result. 5058 if (interrogatingPid == Process.myPid() 5059 && interrogatingTid == Looper.getMainLooper().getThread().getId()) { 5060 AccessibilityInteractionClient.getInstanceForThread( 5061 interrogatingTid).setSameThreadMessage(message); 5062 } else { 5063 mHandler.sendMessage(message); 5064 } 5065 } 5066 5067 public void findAccessibilityNodeInfosByTextUiThread(Message message) { 5068 SomeArgs args = (SomeArgs) message.obj; 5069 final String text = (String) args.arg1; 5070 final int accessibilityViewId = args.argi1; 5071 final int virtualDescendantId = args.argi2; 5072 final int interactionId = args.argi3; 5073 final IAccessibilityInteractionConnectionCallback callback = 5074 (IAccessibilityInteractionConnectionCallback) args.arg2; 5075 mPool.release(args); 5076 List<AccessibilityNodeInfo> infos = null; 5077 try { 5078 View target; 5079 if (accessibilityViewId != AccessibilityNodeInfo.UNDEFINED) { 5080 target = findViewByAccessibilityId(accessibilityViewId); 5081 } else { 5082 target = ViewRootImpl.this.mView; 5083 } 5084 if (target != null && target.getVisibility() == View.VISIBLE) { 5085 AccessibilityNodeProvider provider = target.getAccessibilityNodeProvider(); 5086 if (provider != null) { 5087 infos = provider.findAccessibilityNodeInfosByText(text, 5088 virtualDescendantId); 5089 } else if (virtualDescendantId == AccessibilityNodeInfo.UNDEFINED) { 5090 ArrayList<View> foundViews = mAttachInfo.mFocusablesTempList; 5091 foundViews.clear(); 5092 target.findViewsWithText(foundViews, text, View.FIND_VIEWS_WITH_TEXT 5093 | View.FIND_VIEWS_WITH_CONTENT_DESCRIPTION 5094 | View.FIND_VIEWS_WITH_ACCESSIBILITY_NODE_PROVIDERS); 5095 if (!foundViews.isEmpty()) { 5096 infos = mTempAccessibilityNodeInfoList; 5097 infos.clear(); 5098 final int viewCount = foundViews.size(); 5099 for (int i = 0; i < viewCount; i++) { 5100 View foundView = foundViews.get(i); 5101 if (foundView.getVisibility() == View.VISIBLE) { 5102 provider = foundView.getAccessibilityNodeProvider(); 5103 if (provider != null) { 5104 List<AccessibilityNodeInfo> infosFromProvider = 5105 provider.findAccessibilityNodeInfosByText(text, 5106 virtualDescendantId); 5107 if (infosFromProvider != null) { 5108 infos.addAll(infosFromProvider); 5109 } 5110 } else { 5111 infos.add(foundView.createAccessibilityNodeInfo()); 5112 } 5113 } 5114 } 5115 } 5116 } 5117 } 5118 } finally { 5119 try { 5120 callback.setFindAccessibilityNodeInfosResult(infos, interactionId); 5121 } catch (RemoteException re) { 5122 /* ignore - the other side will time out */ 5123 } 5124 } 5125 } 5126 5127 public void performAccessibilityActionClientThread(long accessibilityNodeId, int action, 5128 int interactionId, IAccessibilityInteractionConnectionCallback callback, 5129 int interogatingPid, long interrogatingTid) { 5130 Message message = mHandler.obtainMessage(); 5131 message.what = MSG_PERFORM_ACCESSIBILITY_ACTION; 5132 message.arg1 = AccessibilityNodeInfo.getAccessibilityViewId(accessibilityNodeId); 5133 message.arg2 = AccessibilityNodeInfo.getVirtualDescendantId(accessibilityNodeId); 5134 SomeArgs args = mPool.acquire(); 5135 args.argi1 = action; 5136 args.argi2 = interactionId; 5137 args.arg1 = callback; 5138 message.obj = args; 5139 // If the interrogation is performed by the same thread as the main UI 5140 // thread in this process, set the message as a static reference so 5141 // after this call completes the same thread but in the interrogating 5142 // client can handle the message to generate the result. 5143 if (interogatingPid == Process.myPid() 5144 && interrogatingTid == Looper.getMainLooper().getThread().getId()) { 5145 AccessibilityInteractionClient.getInstanceForThread( 5146 interrogatingTid).setSameThreadMessage(message); 5147 } else { 5148 mHandler.sendMessage(message); 5149 } 5150 } 5151 5152 public void perfromAccessibilityActionUiThread(Message message) { 5153 final int accessibilityViewId = message.arg1; 5154 final int virtualDescendantId = message.arg2; 5155 SomeArgs args = (SomeArgs) message.obj; 5156 final int action = args.argi1; 5157 final int interactionId = args.argi2; 5158 final IAccessibilityInteractionConnectionCallback callback = 5159 (IAccessibilityInteractionConnectionCallback) args.arg1; 5160 mPool.release(args); 5161 boolean succeeded = false; 5162 try { 5163 View target = findViewByAccessibilityId(accessibilityViewId); 5164 if (target != null && target.getVisibility() == View.VISIBLE) { 5165 AccessibilityNodeProvider provider = target.getAccessibilityNodeProvider(); 5166 if (provider != null) { 5167 succeeded = provider.performAccessibilityAction(action, 5168 virtualDescendantId); 5169 } else if (virtualDescendantId == AccessibilityNodeInfo.UNDEFINED) { 5170 switch (action) { 5171 case AccessibilityNodeInfo.ACTION_FOCUS: { 5172 if (!target.hasFocus()) { 5173 // Get out of touch mode since accessibility 5174 // wants to move focus around. 5175 ensureTouchMode(false); 5176 succeeded = target.requestFocus(); 5177 } 5178 } break; 5179 case AccessibilityNodeInfo.ACTION_CLEAR_FOCUS: { 5180 if (target.hasFocus()) { 5181 target.clearFocus(); 5182 succeeded = !target.isFocused(); 5183 } 5184 } break; 5185 case AccessibilityNodeInfo.ACTION_SELECT: { 5186 if (!target.isSelected()) { 5187 target.setSelected(true); 5188 succeeded = target.isSelected(); 5189 } 5190 } break; 5191 case AccessibilityNodeInfo.ACTION_CLEAR_SELECTION: { 5192 if (target.isSelected()) { 5193 target.setSelected(false); 5194 succeeded = !target.isSelected(); 5195 } 5196 } break; 5197 } 5198 } 5199 } 5200 } finally { 5201 try { 5202 callback.setPerformAccessibilityActionResult(succeeded, interactionId); 5203 } catch (RemoteException re) { 5204 /* ignore - the other side will time out */ 5205 } 5206 } 5207 } 5208 5209 private View findViewByAccessibilityId(int accessibilityId) { 5210 View root = ViewRootImpl.this.mView; 5211 if (root == null) { 5212 return null; 5213 } 5214 View foundView = root.findViewByAccessibilityId(accessibilityId); 5215 if (foundView != null && foundView.getVisibility() != View.VISIBLE) { 5216 return null; 5217 } 5218 return foundView; 5219 } 5220 } 5221 5222 private class SendWindowContentChangedAccessibilityEvent implements Runnable { 5223 public volatile boolean mIsPending; 5224 5225 public void run() { 5226 if (mView != null) { 5227 mView.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED); 5228 mIsPending = false; 5229 } 5230 } 5231 } 5232 5233 /** 5234 * This class encapsulates a prefetching strategy for the accessibility APIs for 5235 * querying window content. It is responsible to prefetch a batch of 5236 * AccessibilityNodeInfos in addition to the one for a requested node. 5237 */ 5238 class AccessibilityNodePrefetcher { 5239 5240 private static final int MAX_ACCESSIBILITY_NODE_INFO_BATCH_SIZE = 50; 5241 5242 public void prefetchAccessibilityNodeInfos(View view, int virtualViewId, int prefetchFlags, 5243 List<AccessibilityNodeInfo> outInfos) { 5244 AccessibilityNodeProvider provider = view.getAccessibilityNodeProvider(); 5245 if (provider == null) { 5246 AccessibilityNodeInfo root = view.createAccessibilityNodeInfo(); 5247 if (root != null) { 5248 outInfos.add(root); 5249 if ((prefetchFlags & AccessibilityNodeInfo.FLAG_PREFETCH_PREDECESSORS) != 0) { 5250 prefetchPredecessorsOfRealNode(view, outInfos); 5251 } 5252 if ((prefetchFlags & AccessibilityNodeInfo.FLAG_PREFETCH_SIBLINGS) != 0) { 5253 prefetchSiblingsOfRealNode(view, outInfos); 5254 } 5255 if ((prefetchFlags & AccessibilityNodeInfo.FLAG_PREFETCH_DESCENDANTS) != 0) { 5256 prefetchDescendantsOfRealNode(view, outInfos); 5257 } 5258 } 5259 } else { 5260 AccessibilityNodeInfo root = provider.createAccessibilityNodeInfo(virtualViewId); 5261 if (root != null) { 5262 outInfos.add(root); 5263 if ((prefetchFlags & AccessibilityNodeInfo.FLAG_PREFETCH_PREDECESSORS) != 0) { 5264 prefetchPredecessorsOfVirtualNode(root, view, provider, outInfos); 5265 } 5266 if ((prefetchFlags & AccessibilityNodeInfo.FLAG_PREFETCH_SIBLINGS) != 0) { 5267 prefetchSiblingsOfVirtualNode(root, view, provider, outInfos); 5268 } 5269 if ((prefetchFlags & AccessibilityNodeInfo.FLAG_PREFETCH_DESCENDANTS) != 0) { 5270 prefetchDescendantsOfVirtualNode(root, provider, outInfos); 5271 } 5272 } 5273 } 5274 } 5275 5276 private void prefetchPredecessorsOfRealNode(View view, 5277 List<AccessibilityNodeInfo> outInfos) { 5278 ViewParent parent = view.getParent(); 5279 while (parent instanceof View 5280 && outInfos.size() < MAX_ACCESSIBILITY_NODE_INFO_BATCH_SIZE) { 5281 View parentView = (View) parent; 5282 final long parentNodeId = AccessibilityNodeInfo.makeNodeId( 5283 parentView.getAccessibilityViewId(), AccessibilityNodeInfo.UNDEFINED); 5284 AccessibilityNodeInfo info = parentView.createAccessibilityNodeInfo(); 5285 if (info != null) { 5286 outInfos.add(info); 5287 } 5288 parent = parent.getParent(); 5289 } 5290 } 5291 5292 private void prefetchSiblingsOfRealNode(View current, 5293 List<AccessibilityNodeInfo> outInfos) { 5294 ViewParent parent = current.getParent(); 5295 if (parent instanceof ViewGroup) { 5296 ViewGroup parentGroup = (ViewGroup) parent; 5297 final int childCount = parentGroup.getChildCount(); 5298 for (int i = 0; i < childCount; i++) { 5299 View child = parentGroup.getChildAt(i); 5300 if (outInfos.size() < MAX_ACCESSIBILITY_NODE_INFO_BATCH_SIZE 5301 && child.getAccessibilityViewId() != current.getAccessibilityViewId() 5302 && child.getVisibility() == View.VISIBLE) { 5303 final long childNodeId = AccessibilityNodeInfo.makeNodeId( 5304 child.getAccessibilityViewId(), AccessibilityNodeInfo.UNDEFINED); 5305 AccessibilityNodeInfo info = null; 5306 AccessibilityNodeProvider provider = child.getAccessibilityNodeProvider(); 5307 if (provider == null) { 5308 info = child.createAccessibilityNodeInfo(); 5309 } else { 5310 info = provider.createAccessibilityNodeInfo( 5311 AccessibilityNodeInfo.UNDEFINED); 5312 } 5313 if (info != null) { 5314 outInfos.add(info); 5315 } 5316 } 5317 } 5318 } 5319 } 5320 5321 private void prefetchDescendantsOfRealNode(View root, 5322 List<AccessibilityNodeInfo> outInfos) { 5323 if (root instanceof ViewGroup) { 5324 ViewGroup rootGroup = (ViewGroup) root; 5325 HashMap<View, AccessibilityNodeInfo> addedChildren = 5326 new HashMap<View, AccessibilityNodeInfo>(); 5327 final int childCount = rootGroup.getChildCount(); 5328 for (int i = 0; i < childCount; i++) { 5329 View child = rootGroup.getChildAt(i); 5330 if (child.getVisibility() == View.VISIBLE 5331 && outInfos.size() < MAX_ACCESSIBILITY_NODE_INFO_BATCH_SIZE) { 5332 final long childNodeId = AccessibilityNodeInfo.makeNodeId( 5333 child.getAccessibilityViewId(), AccessibilityNodeInfo.UNDEFINED); 5334 AccessibilityNodeProvider provider = child.getAccessibilityNodeProvider(); 5335 if (provider == null) { 5336 AccessibilityNodeInfo info = child.createAccessibilityNodeInfo(); 5337 if (info != null) { 5338 outInfos.add(info); 5339 addedChildren.put(child, null); 5340 } 5341 } else { 5342 AccessibilityNodeInfo info = provider.createAccessibilityNodeInfo( 5343 AccessibilityNodeInfo.UNDEFINED); 5344 if (info != null) { 5345 outInfos.add(info); 5346 addedChildren.put(child, info); 5347 } 5348 } 5349 } 5350 } 5351 if (outInfos.size() < MAX_ACCESSIBILITY_NODE_INFO_BATCH_SIZE) { 5352 for (Map.Entry<View, AccessibilityNodeInfo> entry : addedChildren.entrySet()) { 5353 View addedChild = entry.getKey(); 5354 AccessibilityNodeInfo virtualRoot = entry.getValue(); 5355 if (virtualRoot == null) { 5356 prefetchDescendantsOfRealNode(addedChild, outInfos); 5357 } else { 5358 AccessibilityNodeProvider provider = 5359 addedChild.getAccessibilityNodeProvider(); 5360 prefetchDescendantsOfVirtualNode(virtualRoot, provider, outInfos); 5361 } 5362 } 5363 } 5364 } 5365 } 5366 5367 private void prefetchPredecessorsOfVirtualNode(AccessibilityNodeInfo root, 5368 View providerHost, AccessibilityNodeProvider provider, 5369 List<AccessibilityNodeInfo> outInfos) { 5370 long parentNodeId = root.getParentNodeId(); 5371 int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId(parentNodeId); 5372 while (accessibilityViewId != AccessibilityNodeInfo.UNDEFINED) { 5373 final int virtualDescendantId = 5374 AccessibilityNodeInfo.getVirtualDescendantId(parentNodeId); 5375 if (virtualDescendantId != AccessibilityNodeInfo.UNDEFINED 5376 || accessibilityViewId == providerHost.getAccessibilityViewId()) { 5377 AccessibilityNodeInfo parent = provider.createAccessibilityNodeInfo( 5378 virtualDescendantId); 5379 if (parent != null) { 5380 outInfos.add(parent); 5381 } 5382 parentNodeId = parent.getParentNodeId(); 5383 accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 5384 parentNodeId); 5385 } else { 5386 prefetchPredecessorsOfRealNode(providerHost, outInfos); 5387 return; 5388 } 5389 } 5390 } 5391 5392 private void prefetchSiblingsOfVirtualNode(AccessibilityNodeInfo current, View providerHost, 5393 AccessibilityNodeProvider provider, List<AccessibilityNodeInfo> outInfos) { 5394 final long parentNodeId = current.getParentNodeId(); 5395 final int parentAccessibilityViewId = 5396 AccessibilityNodeInfo.getAccessibilityViewId(parentNodeId); 5397 final int parentVirtualDescendantId = 5398 AccessibilityNodeInfo.getVirtualDescendantId(parentNodeId); 5399 if (parentVirtualDescendantId != AccessibilityNodeInfo.UNDEFINED 5400 || parentAccessibilityViewId == providerHost.getAccessibilityViewId()) { 5401 AccessibilityNodeInfo parent = 5402 provider.createAccessibilityNodeInfo(parentVirtualDescendantId); 5403 if (parent != null) { 5404 SparseLongArray childNodeIds = parent.getChildNodeIds(); 5405 final int childCount = childNodeIds.size(); 5406 for (int i = 0; i < childCount; i++) { 5407 final long childNodeId = childNodeIds.get(i); 5408 if (childNodeId != current.getSourceNodeId() 5409 && outInfos.size() < MAX_ACCESSIBILITY_NODE_INFO_BATCH_SIZE) { 5410 final int childVirtualDescendantId = 5411 AccessibilityNodeInfo.getVirtualDescendantId(childNodeId); 5412 AccessibilityNodeInfo child = provider.createAccessibilityNodeInfo( 5413 childVirtualDescendantId); 5414 if (child != null) { 5415 outInfos.add(child); 5416 } 5417 } 5418 } 5419 } 5420 } else { 5421 prefetchSiblingsOfRealNode(providerHost, outInfos); 5422 } 5423 } 5424 5425 private void prefetchDescendantsOfVirtualNode(AccessibilityNodeInfo root, 5426 AccessibilityNodeProvider provider, List<AccessibilityNodeInfo> outInfos) { 5427 SparseLongArray childNodeIds = root.getChildNodeIds(); 5428 final int initialOutInfosSize = outInfos.size(); 5429 final int childCount = childNodeIds.size(); 5430 for (int i = 0; i < childCount; i++) { 5431 if (outInfos.size() < MAX_ACCESSIBILITY_NODE_INFO_BATCH_SIZE) { 5432 final long childNodeId = childNodeIds.get(i); 5433 AccessibilityNodeInfo child = provider.createAccessibilityNodeInfo( 5434 AccessibilityNodeInfo.getVirtualDescendantId(childNodeId)); 5435 if (child != null) { 5436 outInfos.add(child); 5437 } 5438 } 5439 } 5440 if (outInfos.size() < MAX_ACCESSIBILITY_NODE_INFO_BATCH_SIZE) { 5441 final int addedChildCount = outInfos.size() - initialOutInfosSize; 5442 for (int i = 0; i < addedChildCount; i++) { 5443 AccessibilityNodeInfo child = outInfos.get(initialOutInfosSize + i); 5444 prefetchDescendantsOfVirtualNode(child, provider, outInfos); 5445 } 5446 } 5447 } 5448 } 5449} 5450