ViewRootImpl.java revision 07f36c738e65b8cc2484107b4f8e3386d45d065d
1/* 2 * Copyright (C) 2006 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.view; 18 19import android.Manifest; 20import android.animation.LayoutTransition; 21import android.app.ActivityManagerNative; 22import android.content.ClipDescription; 23import android.content.ComponentCallbacks; 24import android.content.ComponentCallbacks2; 25import android.content.Context; 26import android.content.pm.PackageManager; 27import android.content.res.CompatibilityInfo; 28import android.content.res.Configuration; 29import android.content.res.Resources; 30import android.graphics.Canvas; 31import android.graphics.Paint; 32import android.graphics.PixelFormat; 33import android.graphics.Point; 34import android.graphics.PointF; 35import android.graphics.PorterDuff; 36import android.graphics.Rect; 37import android.graphics.Region; 38import android.graphics.drawable.Drawable; 39import android.media.AudioManager; 40import android.os.Binder; 41import android.os.Bundle; 42import android.os.Debug; 43import android.os.Handler; 44import android.os.Looper; 45import android.os.Message; 46import android.os.ParcelFileDescriptor; 47import android.os.PowerManager; 48import android.os.Process; 49import android.os.RemoteException; 50import android.os.SystemClock; 51import android.os.SystemProperties; 52import android.os.Trace; 53import android.util.AndroidRuntimeException; 54import android.util.DisplayMetrics; 55import android.util.Log; 56import android.util.Slog; 57import android.util.TypedValue; 58import android.view.View.AttachInfo; 59import android.view.View.MeasureSpec; 60import android.view.accessibility.AccessibilityEvent; 61import android.view.accessibility.AccessibilityManager; 62import android.view.accessibility.AccessibilityManager.AccessibilityStateChangeListener; 63import android.view.accessibility.AccessibilityNodeInfo; 64import android.view.accessibility.AccessibilityNodeProvider; 65import android.view.accessibility.IAccessibilityInteractionConnection; 66import android.view.accessibility.IAccessibilityInteractionConnectionCallback; 67import android.view.animation.AccelerateDecelerateInterpolator; 68import android.view.animation.Interpolator; 69import android.view.inputmethod.InputConnection; 70import android.view.inputmethod.InputMethodManager; 71import android.widget.Scroller; 72 73import com.android.internal.R; 74import com.android.internal.os.SomeArgs; 75import com.android.internal.policy.PolicyManager; 76import com.android.internal.view.BaseSurfaceHolder; 77import com.android.internal.view.RootViewSurfaceTaker; 78 79import java.io.IOException; 80import java.io.OutputStream; 81import java.lang.ref.WeakReference; 82import java.util.ArrayList; 83import java.util.HashSet; 84 85/** 86 * The top of a view hierarchy, implementing the needed protocol between View 87 * and the WindowManager. This is for the most part an internal implementation 88 * detail of {@link WindowManagerGlobal}. 89 * 90 * {@hide} 91 */ 92@SuppressWarnings({"EmptyCatchBlock", "PointlessBooleanExpression"}) 93public final class ViewRootImpl implements ViewParent, 94 View.AttachInfo.Callbacks, HardwareRenderer.HardwareDrawCallbacks { 95 private static final String TAG = "ViewRootImpl"; 96 private static final boolean DBG = false; 97 private static final boolean LOCAL_LOGV = false; 98 /** @noinspection PointlessBooleanExpression*/ 99 private static final boolean DEBUG_DRAW = false || LOCAL_LOGV; 100 private static final boolean DEBUG_LAYOUT = false || LOCAL_LOGV; 101 private static final boolean DEBUG_DIALOG = false || LOCAL_LOGV; 102 private static final boolean DEBUG_INPUT_RESIZE = false || LOCAL_LOGV; 103 private static final boolean DEBUG_ORIENTATION = false || LOCAL_LOGV; 104 private static final boolean DEBUG_TRACKBALL = false || LOCAL_LOGV; 105 private static final boolean DEBUG_IMF = false || LOCAL_LOGV; 106 private static final boolean DEBUG_CONFIGURATION = false || LOCAL_LOGV; 107 private static final boolean DEBUG_FPS = false; 108 private static final boolean DEBUG_INPUT_PROCESSING = false || LOCAL_LOGV; 109 110 /** 111 * Set this system property to true to force the view hierarchy to render 112 * at 60 Hz. This can be used to measure the potential framerate. 113 */ 114 private static final String PROPERTY_PROFILE_RENDERING = "viewroot.profile_rendering"; 115 private static final String PROPERTY_MEDIA_DISABLED = "config.disable_media"; 116 117 /** 118 * Maximum time we allow the user to roll the trackball enough to generate 119 * a key event, before resetting the counters. 120 */ 121 static final int MAX_TRACKBALL_DELAY = 250; 122 123 static final ThreadLocal<RunQueue> sRunQueues = new ThreadLocal<RunQueue>(); 124 125 static final ArrayList<Runnable> sFirstDrawHandlers = new ArrayList<Runnable>(); 126 static boolean sFirstDrawComplete = false; 127 128 static final ArrayList<ComponentCallbacks> sConfigCallbacks 129 = new ArrayList<ComponentCallbacks>(); 130 131 final Context mContext; 132 final IWindowSession mWindowSession; 133 final Display mDisplay; 134 final String mBasePackageName; 135 136 final int[] mTmpLocation = new int[2]; 137 138 final TypedValue mTmpValue = new TypedValue(); 139 140 final Thread mThread; 141 142 final WindowLeaked mLocation; 143 144 final WindowManager.LayoutParams mWindowAttributes = new WindowManager.LayoutParams(); 145 146 final W mWindow; 147 148 final int mTargetSdkVersion; 149 150 int mSeq; 151 152 View mView; 153 154 View mAccessibilityFocusedHost; 155 AccessibilityNodeInfo mAccessibilityFocusedVirtualView; 156 157 int mViewVisibility; 158 boolean mAppVisible = true; 159 int mOrigWindowType = -1; 160 161 // Set to true if the owner of this window is in the stopped state, 162 // so the window should no longer be active. 163 boolean mStopped = false; 164 165 boolean mLastInCompatMode = false; 166 167 SurfaceHolder.Callback2 mSurfaceHolderCallback; 168 BaseSurfaceHolder mSurfaceHolder; 169 boolean mIsCreating; 170 boolean mDrawingAllowed; 171 172 final Region mTransparentRegion; 173 final Region mPreviousTransparentRegion; 174 175 int mWidth; 176 int mHeight; 177 Rect mDirty; 178 final Rect mCurrentDirty = new Rect(); 179 boolean mIsAnimating; 180 181 CompatibilityInfo.Translator mTranslator; 182 183 final View.AttachInfo mAttachInfo; 184 InputChannel mInputChannel; 185 InputQueue.Callback mInputQueueCallback; 186 InputQueue mInputQueue; 187 FallbackEventHandler mFallbackEventHandler; 188 Choreographer mChoreographer; 189 190 final Rect mTempRect; // used in the transaction to not thrash the heap. 191 final Rect mVisRect; // used to retrieve visible rect of focused view. 192 193 boolean mTraversalScheduled; 194 int mTraversalBarrier; 195 boolean mWillDrawSoon; 196 /** Set to true while in performTraversals for detecting when die(true) is called from internal 197 * callbacks such as onMeasure, onPreDraw, onDraw and deferring doDie() until later. */ 198 boolean mIsInTraversal; 199 boolean mFitSystemWindowsRequested; 200 boolean mLayoutRequested; 201 boolean mFirst; 202 boolean mReportNextDraw; 203 boolean mFullRedrawNeeded; 204 boolean mNewSurfaceNeeded; 205 boolean mHasHadWindowFocus; 206 boolean mLastWasImTarget; 207 boolean mWindowsAnimating; 208 boolean mDrawDuringWindowsAnimating; 209 boolean mIsDrawing; 210 int mLastSystemUiVisibility; 211 int mClientWindowLayoutFlags; 212 boolean mLastOverscanRequested; 213 214 // Pool of queued input events. 215 private static final int MAX_QUEUED_INPUT_EVENT_POOL_SIZE = 10; 216 private QueuedInputEvent mQueuedInputEventPool; 217 private int mQueuedInputEventPoolSize; 218 219 /* Input event queue. 220 * Pending input events are input events waiting to be delivered to the input stages 221 * and handled by the application. 222 */ 223 QueuedInputEvent mPendingInputEventHead; 224 QueuedInputEvent mPendingInputEventTail; 225 int mPendingInputEventCount; 226 boolean mProcessInputEventsScheduled; 227 String mPendingInputEventQueueLengthCounterName = "pq"; 228 229 InputStage mFirstInputStage; 230 InputStage mFirstPostImeInputStage; 231 232 boolean mWindowAttributesChanged = false; 233 int mWindowAttributesChangesFlag = 0; 234 235 // These can be accessed by any thread, must be protected with a lock. 236 // Surface can never be reassigned or cleared (use Surface.clear()). 237 private final Surface mSurface = new Surface(); 238 239 boolean mAdded; 240 boolean mAddedTouchMode; 241 242 final DisplayAdjustments mDisplayAdjustments; 243 244 // These are accessed by multiple threads. 245 final Rect mWinFrame; // frame given by window manager. 246 247 final Rect mPendingOverscanInsets = new Rect(); 248 final Rect mPendingVisibleInsets = new Rect(); 249 final Rect mPendingContentInsets = new Rect(); 250 final ViewTreeObserver.InternalInsetsInfo mLastGivenInsets 251 = new ViewTreeObserver.InternalInsetsInfo(); 252 253 final Rect mFitSystemWindowsInsets = new Rect(); 254 255 final Configuration mLastConfiguration = new Configuration(); 256 final Configuration mPendingConfiguration = new Configuration(); 257 258 boolean mScrollMayChange; 259 int mSoftInputMode; 260 WeakReference<View> mLastScrolledFocus; 261 int mScrollY; 262 int mCurScrollY; 263 Scroller mScroller; 264 HardwareLayer mResizeBuffer; 265 long mResizeBufferStartTime; 266 int mResizeBufferDuration; 267 static final Interpolator mResizeInterpolator = new AccelerateDecelerateInterpolator(); 268 private ArrayList<LayoutTransition> mPendingTransitions; 269 270 final ViewConfiguration mViewConfiguration; 271 272 /* Drag/drop */ 273 ClipDescription mDragDescription; 274 View mCurrentDragView; 275 volatile Object mLocalDragState; 276 final PointF mDragPoint = new PointF(); 277 final PointF mLastTouchPoint = new PointF(); 278 279 private boolean mProfileRendering; 280 private Choreographer.FrameCallback mRenderProfiler; 281 private boolean mRenderProfilingEnabled; 282 283 private boolean mMediaDisabled; 284 285 // Variables to track frames per second, enabled via DEBUG_FPS flag 286 private long mFpsStartTime = -1; 287 private long mFpsPrevTime = -1; 288 private int mFpsNumFrames; 289 290 private final ArrayList<DisplayList> mDisplayLists = new ArrayList<DisplayList>(); 291 292 /** 293 * see {@link #playSoundEffect(int)} 294 */ 295 AudioManager mAudioManager; 296 297 final AccessibilityManager mAccessibilityManager; 298 299 AccessibilityInteractionController mAccessibilityInteractionController; 300 301 AccessibilityInteractionConnectionManager mAccessibilityInteractionConnectionManager; 302 303 SendWindowContentChangedAccessibilityEvent mSendWindowContentChangedAccessibilityEvent; 304 305 HashSet<View> mTempHashSet; 306 307 private final int mDensity; 308 private final int mNoncompatDensity; 309 310 private boolean mInLayout = false; 311 ArrayList<View> mLayoutRequesters = new ArrayList<View>(); 312 boolean mHandlingLayoutInLayoutRequest = false; 313 314 private int mViewLayoutDirectionInitial; 315 316 /** Set to true once doDie() has been called. */ 317 private boolean mRemoved; 318 319 /** 320 * Consistency verifier for debugging purposes. 321 */ 322 protected final InputEventConsistencyVerifier mInputEventConsistencyVerifier = 323 InputEventConsistencyVerifier.isInstrumentationEnabled() ? 324 new InputEventConsistencyVerifier(this, 0) : null; 325 326 static final class SystemUiVisibilityInfo { 327 int seq; 328 int globalVisibility; 329 int localValue; 330 int localChanges; 331 } 332 333 public ViewRootImpl(Context context, Display display) { 334 mContext = context; 335 mWindowSession = WindowManagerGlobal.getWindowSession(); 336 mDisplay = display; 337 mBasePackageName = context.getBasePackageName(); 338 339 mDisplayAdjustments = display.getDisplayAdjustments(); 340 341 mThread = Thread.currentThread(); 342 mLocation = new WindowLeaked(null); 343 mLocation.fillInStackTrace(); 344 mWidth = -1; 345 mHeight = -1; 346 mDirty = new Rect(); 347 mTempRect = new Rect(); 348 mVisRect = new Rect(); 349 mWinFrame = new Rect(); 350 mWindow = new W(this); 351 mTargetSdkVersion = context.getApplicationInfo().targetSdkVersion; 352 mViewVisibility = View.GONE; 353 mTransparentRegion = new Region(); 354 mPreviousTransparentRegion = new Region(); 355 mFirst = true; // true for the first time the view is added 356 mAdded = false; 357 mAccessibilityManager = AccessibilityManager.getInstance(context); 358 mAccessibilityInteractionConnectionManager = 359 new AccessibilityInteractionConnectionManager(); 360 mAccessibilityManager.addAccessibilityStateChangeListener( 361 mAccessibilityInteractionConnectionManager); 362 mAttachInfo = new View.AttachInfo(mWindowSession, mWindow, display, this, mHandler, this); 363 mViewConfiguration = ViewConfiguration.get(context); 364 mDensity = context.getResources().getDisplayMetrics().densityDpi; 365 mNoncompatDensity = context.getResources().getDisplayMetrics().noncompatDensityDpi; 366 mFallbackEventHandler = PolicyManager.makeNewFallbackEventHandler(context); 367 mChoreographer = Choreographer.getInstance(); 368 369 PowerManager powerManager = (PowerManager) context.getSystemService(Context.POWER_SERVICE); 370 mAttachInfo.mScreenOn = powerManager.isScreenOn(); 371 loadSystemProperties(); 372 } 373 374 public static void addFirstDrawHandler(Runnable callback) { 375 synchronized (sFirstDrawHandlers) { 376 if (!sFirstDrawComplete) { 377 sFirstDrawHandlers.add(callback); 378 } 379 } 380 } 381 382 public static void addConfigCallback(ComponentCallbacks callback) { 383 synchronized (sConfigCallbacks) { 384 sConfigCallbacks.add(callback); 385 } 386 } 387 388 // FIXME for perf testing only 389 private boolean mProfile = false; 390 391 /** 392 * Call this to profile the next traversal call. 393 * FIXME for perf testing only. Remove eventually 394 */ 395 public void profile() { 396 mProfile = true; 397 } 398 399 /** 400 * Indicates whether we are in touch mode. Calling this method triggers an IPC 401 * call and should be avoided whenever possible. 402 * 403 * @return True, if the device is in touch mode, false otherwise. 404 * 405 * @hide 406 */ 407 static boolean isInTouchMode() { 408 IWindowSession windowSession = WindowManagerGlobal.peekWindowSession(); 409 if (windowSession != null) { 410 try { 411 return windowSession.getInTouchMode(); 412 } catch (RemoteException e) { 413 } 414 } 415 return false; 416 } 417 418 /** 419 * We have one child 420 */ 421 public void setView(View view, WindowManager.LayoutParams attrs, View panelParentView) { 422 synchronized (this) { 423 if (mView == null) { 424 mView = view; 425 mViewLayoutDirectionInitial = mView.getRawLayoutDirection(); 426 mFallbackEventHandler.setView(view); 427 mWindowAttributes.copyFrom(attrs); 428 if (mWindowAttributes.packageName == null) { 429 mWindowAttributes.packageName = mBasePackageName; 430 } 431 attrs = mWindowAttributes; 432 // Keep track of the actual window flags supplied by the client. 433 mClientWindowLayoutFlags = attrs.flags; 434 435 setAccessibilityFocus(null, null); 436 437 if (view instanceof RootViewSurfaceTaker) { 438 mSurfaceHolderCallback = 439 ((RootViewSurfaceTaker)view).willYouTakeTheSurface(); 440 if (mSurfaceHolderCallback != null) { 441 mSurfaceHolder = new TakenSurfaceHolder(); 442 mSurfaceHolder.setFormat(PixelFormat.UNKNOWN); 443 } 444 } 445 446 CompatibilityInfo compatibilityInfo = mDisplayAdjustments.getCompatibilityInfo(); 447 mTranslator = compatibilityInfo.getTranslator(); 448 mDisplayAdjustments.setActivityToken(attrs.token); 449 450 // If the application owns the surface, don't enable hardware acceleration 451 if (mSurfaceHolder == null) { 452 enableHardwareAcceleration(attrs); 453 } 454 455 boolean restore = false; 456 if (mTranslator != null) { 457 mSurface.setCompatibilityTranslator(mTranslator); 458 restore = true; 459 attrs.backup(); 460 mTranslator.translateWindowLayout(attrs); 461 } 462 if (DEBUG_LAYOUT) Log.d(TAG, "WindowLayout in setView:" + attrs); 463 464 if (!compatibilityInfo.supportsScreen()) { 465 attrs.flags |= WindowManager.LayoutParams.FLAG_COMPATIBLE_WINDOW; 466 mLastInCompatMode = true; 467 } 468 469 mSoftInputMode = attrs.softInputMode; 470 mWindowAttributesChanged = true; 471 mWindowAttributesChangesFlag = WindowManager.LayoutParams.EVERYTHING_CHANGED; 472 mAttachInfo.mRootView = view; 473 mAttachInfo.mScalingRequired = mTranslator != null; 474 mAttachInfo.mApplicationScale = 475 mTranslator == null ? 1.0f : mTranslator.applicationScale; 476 if (panelParentView != null) { 477 mAttachInfo.mPanelParentWindowToken 478 = panelParentView.getApplicationWindowToken(); 479 } 480 mAdded = true; 481 int res; /* = WindowManagerImpl.ADD_OKAY; */ 482 483 // Schedule the first layout -before- adding to the window 484 // manager, to make sure we do the relayout before receiving 485 // any other events from the system. 486 requestLayout(); 487 if ((mWindowAttributes.inputFeatures 488 & WindowManager.LayoutParams.INPUT_FEATURE_NO_INPUT_CHANNEL) == 0) { 489 mInputChannel = new InputChannel(); 490 } 491 try { 492 mOrigWindowType = mWindowAttributes.type; 493 mAttachInfo.mRecomputeGlobalAttributes = true; 494 collectViewAttributes(); 495 res = mWindowSession.addToDisplay(mWindow, mSeq, mWindowAttributes, 496 getHostVisibility(), mDisplay.getDisplayId(), 497 mAttachInfo.mContentInsets, mInputChannel); 498 } catch (RemoteException e) { 499 mAdded = false; 500 mView = null; 501 mAttachInfo.mRootView = null; 502 mInputChannel = null; 503 mFallbackEventHandler.setView(null); 504 unscheduleTraversals(); 505 setAccessibilityFocus(null, null); 506 throw new RuntimeException("Adding window failed", e); 507 } finally { 508 if (restore) { 509 attrs.restore(); 510 } 511 } 512 513 if (mTranslator != null) { 514 mTranslator.translateRectInScreenToAppWindow(mAttachInfo.mContentInsets); 515 } 516 mPendingOverscanInsets.set(0, 0, 0, 0); 517 mPendingContentInsets.set(mAttachInfo.mContentInsets); 518 mPendingVisibleInsets.set(0, 0, 0, 0); 519 if (DEBUG_LAYOUT) Log.v(TAG, "Added window " + mWindow); 520 if (res < WindowManagerGlobal.ADD_OKAY) { 521 mAttachInfo.mRootView = null; 522 mAdded = false; 523 mFallbackEventHandler.setView(null); 524 unscheduleTraversals(); 525 setAccessibilityFocus(null, null); 526 switch (res) { 527 case WindowManagerGlobal.ADD_BAD_APP_TOKEN: 528 case WindowManagerGlobal.ADD_BAD_SUBWINDOW_TOKEN: 529 throw new WindowManager.BadTokenException( 530 "Unable to add window -- token " + attrs.token 531 + " is not valid; is your activity running?"); 532 case WindowManagerGlobal.ADD_NOT_APP_TOKEN: 533 throw new WindowManager.BadTokenException( 534 "Unable to add window -- token " + attrs.token 535 + " is not for an application"); 536 case WindowManagerGlobal.ADD_APP_EXITING: 537 throw new WindowManager.BadTokenException( 538 "Unable to add window -- app for token " + attrs.token 539 + " is exiting"); 540 case WindowManagerGlobal.ADD_DUPLICATE_ADD: 541 throw new WindowManager.BadTokenException( 542 "Unable to add window -- window " + mWindow 543 + " has already been added"); 544 case WindowManagerGlobal.ADD_STARTING_NOT_NEEDED: 545 // Silently ignore -- we would have just removed it 546 // right away, anyway. 547 return; 548 case WindowManagerGlobal.ADD_MULTIPLE_SINGLETON: 549 throw new WindowManager.BadTokenException( 550 "Unable to add window " + mWindow + 551 " -- another window of this type already exists"); 552 case WindowManagerGlobal.ADD_PERMISSION_DENIED: 553 throw new WindowManager.BadTokenException( 554 "Unable to add window " + mWindow + 555 " -- permission denied for this window type"); 556 case WindowManagerGlobal.ADD_INVALID_DISPLAY: 557 throw new WindowManager.InvalidDisplayException( 558 "Unable to add window " + mWindow + 559 " -- the specified display can not be found"); 560 } 561 throw new RuntimeException( 562 "Unable to add window -- unknown error code " + res); 563 } 564 565 if (view instanceof RootViewSurfaceTaker) { 566 mInputQueueCallback = 567 ((RootViewSurfaceTaker)view).willYouTakeTheInputQueue(); 568 } 569 if (mInputChannel != null) { 570 if (mInputQueueCallback != null) { 571 mInputQueue = new InputQueue(); 572 mInputQueueCallback.onInputQueueCreated(mInputQueue); 573 } 574 mInputEventReceiver = new WindowInputEventReceiver(mInputChannel, 575 Looper.myLooper()); 576 } 577 578 view.assignParent(this); 579 mAddedTouchMode = (res & WindowManagerGlobal.ADD_FLAG_IN_TOUCH_MODE) != 0; 580 mAppVisible = (res & WindowManagerGlobal.ADD_FLAG_APP_VISIBLE) != 0; 581 582 if (mAccessibilityManager.isEnabled()) { 583 mAccessibilityInteractionConnectionManager.ensureConnection(); 584 } 585 586 if (view.getImportantForAccessibility() == View.IMPORTANT_FOR_ACCESSIBILITY_AUTO) { 587 view.setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_YES); 588 } 589 590 // Set up the input pipeline. 591 CharSequence counterSuffix = attrs.getTitle(); 592 InputStage syntheticStage = new SyntheticInputStage(); 593 InputStage viewPostImeStage = new ViewPostImeInputStage(syntheticStage); 594 InputStage nativePostImeStage = new NativePostImeInputStage(viewPostImeStage, 595 "aq:native-post-ime:" + counterSuffix); 596 InputStage earlyPostImeStage = new EarlyPostImeInputStage(nativePostImeStage); 597 InputStage imeStage = new ImeInputStage(earlyPostImeStage, 598 "aq:ime:" + counterSuffix); 599 InputStage viewPreImeStage = new ViewPreImeInputStage(imeStage); 600 InputStage nativePreImeStage = new NativePreImeInputStage(viewPreImeStage, 601 "aq:native-pre-ime:" + counterSuffix); 602 603 mFirstInputStage = nativePreImeStage; 604 mFirstPostImeInputStage = earlyPostImeStage; 605 mPendingInputEventQueueLengthCounterName = "aq:pending:" + counterSuffix; 606 } 607 } 608 } 609 610 void destroyHardwareResources() { 611 if (mAttachInfo.mHardwareRenderer != null) { 612 if (mAttachInfo.mHardwareRenderer.isEnabled()) { 613 mAttachInfo.mHardwareRenderer.destroyLayers(mView); 614 } 615 mAttachInfo.mHardwareRenderer.destroy(false); 616 } 617 } 618 619 void terminateHardwareResources() { 620 if (mAttachInfo.mHardwareRenderer != null) { 621 mAttachInfo.mHardwareRenderer.destroyHardwareResources(mView); 622 mAttachInfo.mHardwareRenderer.destroy(false); 623 } 624 } 625 626 void destroyHardwareLayers() { 627 if (mThread != Thread.currentThread()) { 628 if (mAttachInfo.mHardwareRenderer != null && 629 mAttachInfo.mHardwareRenderer.isEnabled()) { 630 HardwareRenderer.trimMemory(ComponentCallbacks2.TRIM_MEMORY_MODERATE); 631 } 632 } else { 633 if (mAttachInfo.mHardwareRenderer != null && 634 mAttachInfo.mHardwareRenderer.isEnabled()) { 635 mAttachInfo.mHardwareRenderer.destroyLayers(mView); 636 } 637 } 638 } 639 640 void pushHardwareLayerUpdate(HardwareLayer layer) { 641 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled()) { 642 mAttachInfo.mHardwareRenderer.pushLayerUpdate(layer); 643 } 644 } 645 646 void flushHardwareLayerUpdates() { 647 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled() && 648 mAttachInfo.mHardwareRenderer.validate()) { 649 mAttachInfo.mHardwareRenderer.flushLayerUpdates(); 650 } 651 } 652 653 void dispatchFlushHardwareLayerUpdates() { 654 mHandler.removeMessages(MSG_FLUSH_LAYER_UPDATES); 655 mHandler.sendMessageAtFrontOfQueue(mHandler.obtainMessage(MSG_FLUSH_LAYER_UPDATES)); 656 } 657 658 public boolean attachFunctor(int functor) { 659 //noinspection SimplifiableIfStatement 660 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled()) { 661 return mAttachInfo.mHardwareRenderer.attachFunctor(mAttachInfo, functor); 662 } 663 return false; 664 } 665 666 public void detachFunctor(int functor) { 667 if (mAttachInfo.mHardwareRenderer != null) { 668 mAttachInfo.mHardwareRenderer.detachFunctor(functor); 669 } 670 } 671 672 private void enableHardwareAcceleration(WindowManager.LayoutParams attrs) { 673 mAttachInfo.mHardwareAccelerated = false; 674 mAttachInfo.mHardwareAccelerationRequested = false; 675 676 // Don't enable hardware acceleration when the application is in compatibility mode 677 if (mTranslator != null) return; 678 679 // Try to enable hardware acceleration if requested 680 final boolean hardwareAccelerated = 681 (attrs.flags & WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED) != 0; 682 683 if (hardwareAccelerated) { 684 if (!HardwareRenderer.isAvailable()) { 685 return; 686 } 687 688 // Persistent processes (including the system) should not do 689 // accelerated rendering on low-end devices. In that case, 690 // sRendererDisabled will be set. In addition, the system process 691 // itself should never do accelerated rendering. In that case, both 692 // sRendererDisabled and sSystemRendererDisabled are set. When 693 // sSystemRendererDisabled is set, PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED 694 // can be used by code on the system process to escape that and enable 695 // HW accelerated drawing. (This is basically for the lock screen.) 696 697 final boolean fakeHwAccelerated = (attrs.privateFlags & 698 WindowManager.LayoutParams.PRIVATE_FLAG_FAKE_HARDWARE_ACCELERATED) != 0; 699 final boolean forceHwAccelerated = (attrs.privateFlags & 700 WindowManager.LayoutParams.PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED) != 0; 701 702 if (!HardwareRenderer.sRendererDisabled || (HardwareRenderer.sSystemRendererDisabled 703 && forceHwAccelerated)) { 704 // Don't enable hardware acceleration when we're not on the main thread 705 if (!HardwareRenderer.sSystemRendererDisabled && 706 Looper.getMainLooper() != Looper.myLooper()) { 707 Log.w(HardwareRenderer.LOG_TAG, "Attempting to initialize hardware " 708 + "acceleration outside of the main thread, aborting"); 709 return; 710 } 711 712 if (mAttachInfo.mHardwareRenderer != null) { 713 mAttachInfo.mHardwareRenderer.destroy(true); 714 } 715 716 final boolean translucent = attrs.format != PixelFormat.OPAQUE; 717 mAttachInfo.mHardwareRenderer = HardwareRenderer.createGlRenderer(2, translucent); 718 if (mAttachInfo.mHardwareRenderer != null) { 719 mAttachInfo.mHardwareRenderer.setName(attrs.getTitle().toString()); 720 mAttachInfo.mHardwareAccelerated = 721 mAttachInfo.mHardwareAccelerationRequested = true; 722 } 723 } else if (fakeHwAccelerated) { 724 // The window had wanted to use hardware acceleration, but this 725 // is not allowed in its process. By setting this flag, it can 726 // still render as if it was accelerated. This is basically for 727 // the preview windows the window manager shows for launching 728 // applications, so they will look more like the app being launched. 729 mAttachInfo.mHardwareAccelerationRequested = true; 730 } 731 } 732 } 733 734 public View getView() { 735 return mView; 736 } 737 738 final WindowLeaked getLocation() { 739 return mLocation; 740 } 741 742 void setLayoutParams(WindowManager.LayoutParams attrs, boolean newView) { 743 synchronized (this) { 744 int oldSoftInputMode = mWindowAttributes.softInputMode; 745 // Keep track of the actual window flags supplied by the client. 746 mClientWindowLayoutFlags = attrs.flags; 747 // preserve compatible window flag if exists. 748 int compatibleWindowFlag = 749 mWindowAttributes.flags & WindowManager.LayoutParams.FLAG_COMPATIBLE_WINDOW; 750 // transfer over system UI visibility values as they carry current state. 751 attrs.systemUiVisibility = mWindowAttributes.systemUiVisibility; 752 attrs.subtreeSystemUiVisibility = mWindowAttributes.subtreeSystemUiVisibility; 753 mWindowAttributesChangesFlag = mWindowAttributes.copyFrom(attrs); 754 if (mWindowAttributes.packageName == null) { 755 mWindowAttributes.packageName = mBasePackageName; 756 } 757 mWindowAttributes.flags |= compatibleWindowFlag; 758 759 applyKeepScreenOnFlag(mWindowAttributes); 760 761 if (newView) { 762 mSoftInputMode = attrs.softInputMode; 763 requestLayout(); 764 } 765 // Don't lose the mode we last auto-computed. 766 if ((attrs.softInputMode&WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 767 == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 768 mWindowAttributes.softInputMode = (mWindowAttributes.softInputMode 769 & ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 770 | (oldSoftInputMode 771 & WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST); 772 } 773 mWindowAttributesChanged = true; 774 scheduleTraversals(); 775 } 776 } 777 778 void handleAppVisibility(boolean visible) { 779 if (mAppVisible != visible) { 780 mAppVisible = visible; 781 scheduleTraversals(); 782 } 783 } 784 785 void handleGetNewSurface() { 786 mNewSurfaceNeeded = true; 787 mFullRedrawNeeded = true; 788 scheduleTraversals(); 789 } 790 791 void handleScreenStateChange(boolean on) { 792 if (on != mAttachInfo.mScreenOn) { 793 mAttachInfo.mScreenOn = on; 794 if (mView != null) { 795 mView.dispatchScreenStateChanged(on ? View.SCREEN_STATE_ON : View.SCREEN_STATE_OFF); 796 } 797 if (on) { 798 mFullRedrawNeeded = true; 799 scheduleTraversals(); 800 } 801 } 802 } 803 804 @Override 805 public void requestFitSystemWindows() { 806 checkThread(); 807 mFitSystemWindowsRequested = true; 808 scheduleTraversals(); 809 } 810 811 @Override 812 public void requestLayout() { 813 if (!mHandlingLayoutInLayoutRequest) { 814 checkThread(); 815 mLayoutRequested = true; 816 scheduleTraversals(); 817 } 818 } 819 820 @Override 821 public boolean isLayoutRequested() { 822 return mLayoutRequested; 823 } 824 825 void invalidate() { 826 mDirty.set(0, 0, mWidth, mHeight); 827 scheduleTraversals(); 828 } 829 830 void invalidateWorld(View view) { 831 view.invalidate(); 832 if (view instanceof ViewGroup) { 833 ViewGroup parent = (ViewGroup) view; 834 for (int i = 0; i < parent.getChildCount(); i++) { 835 invalidateWorld(parent.getChildAt(i)); 836 } 837 } 838 } 839 840 @Override 841 public void invalidateChild(View child, Rect dirty) { 842 invalidateChildInParent(null, dirty); 843 } 844 845 @Override 846 public ViewParent invalidateChildInParent(int[] location, Rect dirty) { 847 checkThread(); 848 if (DEBUG_DRAW) Log.v(TAG, "Invalidate child: " + dirty); 849 850 if (dirty == null) { 851 invalidate(); 852 return null; 853 } else if (dirty.isEmpty() && !mIsAnimating) { 854 return null; 855 } 856 857 if (mCurScrollY != 0 || mTranslator != null) { 858 mTempRect.set(dirty); 859 dirty = mTempRect; 860 if (mCurScrollY != 0) { 861 dirty.offset(0, -mCurScrollY); 862 } 863 if (mTranslator != null) { 864 mTranslator.translateRectInAppWindowToScreen(dirty); 865 } 866 if (mAttachInfo.mScalingRequired) { 867 dirty.inset(-1, -1); 868 } 869 } 870 871 final Rect localDirty = mDirty; 872 if (!localDirty.isEmpty() && !localDirty.contains(dirty)) { 873 mAttachInfo.mSetIgnoreDirtyState = true; 874 mAttachInfo.mIgnoreDirtyState = true; 875 } 876 877 // Add the new dirty rect to the current one 878 localDirty.union(dirty.left, dirty.top, dirty.right, dirty.bottom); 879 // Intersect with the bounds of the window to skip 880 // updates that lie outside of the visible region 881 final float appScale = mAttachInfo.mApplicationScale; 882 final boolean intersected = localDirty.intersect(0, 0, 883 (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 884 if (!intersected) { 885 localDirty.setEmpty(); 886 } 887 if (!mWillDrawSoon && (intersected || mIsAnimating)) { 888 scheduleTraversals(); 889 } 890 891 return null; 892 } 893 894 void setStopped(boolean stopped) { 895 if (mStopped != stopped) { 896 mStopped = stopped; 897 if (!stopped) { 898 scheduleTraversals(); 899 } 900 } 901 } 902 903 @Override 904 public ViewParent getParent() { 905 return null; 906 } 907 908 @Override 909 public boolean getChildVisibleRect(View child, Rect r, android.graphics.Point offset) { 910 if (child != mView) { 911 throw new RuntimeException("child is not mine, honest!"); 912 } 913 // Note: don't apply scroll offset, because we want to know its 914 // visibility in the virtual canvas being given to the view hierarchy. 915 return r.intersect(0, 0, mWidth, mHeight); 916 } 917 918 public void bringChildToFront(View child) { 919 } 920 921 int getHostVisibility() { 922 return mAppVisible ? mView.getVisibility() : View.GONE; 923 } 924 925 void disposeResizeBuffer() { 926 if (mResizeBuffer != null && mAttachInfo.mHardwareRenderer != null) { 927 mAttachInfo.mHardwareRenderer.safelyRun(new Runnable() { 928 @Override 929 public void run() { 930 mResizeBuffer.destroy(); 931 mResizeBuffer = null; 932 } 933 }); 934 } 935 } 936 937 /** 938 * Add LayoutTransition to the list of transitions to be started in the next traversal. 939 * This list will be cleared after the transitions on the list are start()'ed. These 940 * transitionsa re added by LayoutTransition itself when it sets up animations. The setup 941 * happens during the layout phase of traversal, which we want to complete before any of the 942 * animations are started (because those animations may side-effect properties that layout 943 * depends upon, like the bounding rectangles of the affected views). So we add the transition 944 * to the list and it is started just prior to starting the drawing phase of traversal. 945 * 946 * @param transition The LayoutTransition to be started on the next traversal. 947 * 948 * @hide 949 */ 950 public void requestTransitionStart(LayoutTransition transition) { 951 if (mPendingTransitions == null || !mPendingTransitions.contains(transition)) { 952 if (mPendingTransitions == null) { 953 mPendingTransitions = new ArrayList<LayoutTransition>(); 954 } 955 mPendingTransitions.add(transition); 956 } 957 } 958 959 void scheduleTraversals() { 960 if (!mTraversalScheduled) { 961 mTraversalScheduled = true; 962 mTraversalBarrier = mHandler.getLooper().postSyncBarrier(); 963 mChoreographer.postCallback( 964 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 965 scheduleConsumeBatchedInput(); 966 } 967 } 968 969 void unscheduleTraversals() { 970 if (mTraversalScheduled) { 971 mTraversalScheduled = false; 972 mHandler.getLooper().removeSyncBarrier(mTraversalBarrier); 973 mChoreographer.removeCallbacks( 974 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 975 } 976 } 977 978 void doTraversal() { 979 if (mTraversalScheduled) { 980 mTraversalScheduled = false; 981 mHandler.getLooper().removeSyncBarrier(mTraversalBarrier); 982 983 if (mProfile) { 984 Debug.startMethodTracing("ViewAncestor"); 985 } 986 987 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "performTraversals"); 988 try { 989 performTraversals(); 990 } finally { 991 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 992 } 993 994 if (mProfile) { 995 Debug.stopMethodTracing(); 996 mProfile = false; 997 } 998 } 999 } 1000 1001 private void applyKeepScreenOnFlag(WindowManager.LayoutParams params) { 1002 // Update window's global keep screen on flag: if a view has requested 1003 // that the screen be kept on, then it is always set; otherwise, it is 1004 // set to whatever the client last requested for the global state. 1005 if (mAttachInfo.mKeepScreenOn) { 1006 params.flags |= WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON; 1007 } else { 1008 params.flags = (params.flags&~WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON) 1009 | (mClientWindowLayoutFlags&WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 1010 } 1011 } 1012 1013 private boolean collectViewAttributes() { 1014 final View.AttachInfo attachInfo = mAttachInfo; 1015 if (attachInfo.mRecomputeGlobalAttributes) { 1016 //Log.i(TAG, "Computing view hierarchy attributes!"); 1017 attachInfo.mRecomputeGlobalAttributes = false; 1018 boolean oldScreenOn = attachInfo.mKeepScreenOn; 1019 attachInfo.mKeepScreenOn = false; 1020 attachInfo.mSystemUiVisibility = 0; 1021 attachInfo.mHasSystemUiListeners = false; 1022 mView.dispatchCollectViewAttributes(attachInfo, 0); 1023 attachInfo.mSystemUiVisibility &= ~attachInfo.mDisabledSystemUiVisibility; 1024 WindowManager.LayoutParams params = mWindowAttributes; 1025 if (attachInfo.mKeepScreenOn != oldScreenOn 1026 || attachInfo.mSystemUiVisibility != params.subtreeSystemUiVisibility 1027 || attachInfo.mHasSystemUiListeners != params.hasSystemUiListeners) { 1028 applyKeepScreenOnFlag(params); 1029 params.subtreeSystemUiVisibility = attachInfo.mSystemUiVisibility; 1030 params.hasSystemUiListeners = attachInfo.mHasSystemUiListeners; 1031 mView.dispatchWindowSystemUiVisiblityChanged(attachInfo.mSystemUiVisibility); 1032 return true; 1033 } 1034 } 1035 return false; 1036 } 1037 1038 private boolean measureHierarchy(final View host, final WindowManager.LayoutParams lp, 1039 final Resources res, final int desiredWindowWidth, final int desiredWindowHeight) { 1040 int childWidthMeasureSpec; 1041 int childHeightMeasureSpec; 1042 boolean windowSizeMayChange = false; 1043 1044 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) Log.v(TAG, 1045 "Measuring " + host + " in display " + desiredWindowWidth 1046 + "x" + desiredWindowHeight + "..."); 1047 1048 boolean goodMeasure = false; 1049 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT) { 1050 // On large screens, we don't want to allow dialogs to just 1051 // stretch to fill the entire width of the screen to display 1052 // one line of text. First try doing the layout at a smaller 1053 // size to see if it will fit. 1054 final DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1055 res.getValue(com.android.internal.R.dimen.config_prefDialogWidth, mTmpValue, true); 1056 int baseSize = 0; 1057 if (mTmpValue.type == TypedValue.TYPE_DIMENSION) { 1058 baseSize = (int)mTmpValue.getDimension(packageMetrics); 1059 } 1060 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": baseSize=" + baseSize); 1061 if (baseSize != 0 && desiredWindowWidth > baseSize) { 1062 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1063 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1064 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1065 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": measured (" 1066 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1067 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1068 goodMeasure = true; 1069 } else { 1070 // Didn't fit in that size... try expanding a bit. 1071 baseSize = (baseSize+desiredWindowWidth)/2; 1072 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": next baseSize=" 1073 + baseSize); 1074 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1075 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1076 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": measured (" 1077 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1078 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1079 if (DEBUG_DIALOG) Log.v(TAG, "Good!"); 1080 goodMeasure = true; 1081 } 1082 } 1083 } 1084 } 1085 1086 if (!goodMeasure) { 1087 childWidthMeasureSpec = getRootMeasureSpec(desiredWindowWidth, lp.width); 1088 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1089 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1090 if (mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) { 1091 windowSizeMayChange = true; 1092 } 1093 } 1094 1095 if (DBG) { 1096 System.out.println("======================================"); 1097 System.out.println("performTraversals -- after measure"); 1098 host.debug(); 1099 } 1100 1101 return windowSizeMayChange; 1102 } 1103 1104 private void performTraversals() { 1105 // cache mView since it is used so much below... 1106 final View host = mView; 1107 1108 if (DBG) { 1109 System.out.println("======================================"); 1110 System.out.println("performTraversals"); 1111 host.debug(); 1112 } 1113 1114 if (host == null || !mAdded) 1115 return; 1116 1117 mIsInTraversal = true; 1118 mWillDrawSoon = true; 1119 boolean windowSizeMayChange = false; 1120 boolean newSurface = false; 1121 boolean surfaceChanged = false; 1122 WindowManager.LayoutParams lp = mWindowAttributes; 1123 1124 int desiredWindowWidth; 1125 int desiredWindowHeight; 1126 1127 final View.AttachInfo attachInfo = mAttachInfo; 1128 1129 final int viewVisibility = getHostVisibility(); 1130 boolean viewVisibilityChanged = mViewVisibility != viewVisibility 1131 || mNewSurfaceNeeded; 1132 1133 WindowManager.LayoutParams params = null; 1134 if (mWindowAttributesChanged) { 1135 mWindowAttributesChanged = false; 1136 surfaceChanged = true; 1137 params = lp; 1138 } 1139 CompatibilityInfo compatibilityInfo = mDisplayAdjustments.getCompatibilityInfo(); 1140 if (compatibilityInfo.supportsScreen() == mLastInCompatMode) { 1141 params = lp; 1142 mFullRedrawNeeded = true; 1143 mLayoutRequested = true; 1144 if (mLastInCompatMode) { 1145 params.flags &= ~WindowManager.LayoutParams.FLAG_COMPATIBLE_WINDOW; 1146 mLastInCompatMode = false; 1147 } else { 1148 params.flags |= WindowManager.LayoutParams.FLAG_COMPATIBLE_WINDOW; 1149 mLastInCompatMode = true; 1150 } 1151 } 1152 1153 mWindowAttributesChangesFlag = 0; 1154 1155 Rect frame = mWinFrame; 1156 if (mFirst) { 1157 mFullRedrawNeeded = true; 1158 mLayoutRequested = true; 1159 1160 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL) { 1161 // NOTE -- system code, won't try to do compat mode. 1162 Point size = new Point(); 1163 mDisplay.getRealSize(size); 1164 desiredWindowWidth = size.x; 1165 desiredWindowHeight = size.y; 1166 } else { 1167 DisplayMetrics packageMetrics = 1168 mView.getContext().getResources().getDisplayMetrics(); 1169 desiredWindowWidth = packageMetrics.widthPixels; 1170 desiredWindowHeight = packageMetrics.heightPixels; 1171 } 1172 1173 // For the very first time, tell the view hierarchy that it 1174 // is attached to the window. Note that at this point the surface 1175 // object is not initialized to its backing store, but soon it 1176 // will be (assuming the window is visible). 1177 attachInfo.mSurface = mSurface; 1178 // We used to use the following condition to choose 32 bits drawing caches: 1179 // PixelFormat.hasAlpha(lp.format) || lp.format == PixelFormat.RGBX_8888 1180 // However, windows are now always 32 bits by default, so choose 32 bits 1181 attachInfo.mUse32BitDrawingCache = true; 1182 attachInfo.mHasWindowFocus = false; 1183 attachInfo.mWindowVisibility = viewVisibility; 1184 attachInfo.mRecomputeGlobalAttributes = false; 1185 viewVisibilityChanged = false; 1186 mLastConfiguration.setTo(host.getResources().getConfiguration()); 1187 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1188 // Set the layout direction if it has not been set before (inherit is the default) 1189 if (mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 1190 host.setLayoutDirection(mLastConfiguration.getLayoutDirection()); 1191 } 1192 host.dispatchAttachedToWindow(attachInfo, 0); 1193 attachInfo.mTreeObserver.dispatchOnWindowAttachedChange(true); 1194 mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets); 1195 host.fitSystemWindows(mFitSystemWindowsInsets); 1196 //Log.i(TAG, "Screen on initialized: " + attachInfo.mKeepScreenOn); 1197 1198 } else { 1199 desiredWindowWidth = frame.width(); 1200 desiredWindowHeight = frame.height(); 1201 if (desiredWindowWidth != mWidth || desiredWindowHeight != mHeight) { 1202 if (DEBUG_ORIENTATION) Log.v(TAG, 1203 "View " + host + " resized to: " + frame); 1204 mFullRedrawNeeded = true; 1205 mLayoutRequested = true; 1206 windowSizeMayChange = true; 1207 } 1208 } 1209 1210 if (viewVisibilityChanged) { 1211 attachInfo.mWindowVisibility = viewVisibility; 1212 host.dispatchWindowVisibilityChanged(viewVisibility); 1213 if (viewVisibility != View.VISIBLE || mNewSurfaceNeeded) { 1214 destroyHardwareResources(); 1215 } 1216 if (viewVisibility == View.GONE) { 1217 // After making a window gone, we will count it as being 1218 // shown for the first time the next time it gets focus. 1219 mHasHadWindowFocus = false; 1220 } 1221 } 1222 1223 // Execute enqueued actions on every traversal in case a detached view enqueued an action 1224 getRunQueue().executeActions(attachInfo.mHandler); 1225 1226 boolean insetsChanged = false; 1227 1228 boolean layoutRequested = mLayoutRequested && !mStopped; 1229 if (layoutRequested) { 1230 1231 final Resources res = mView.getContext().getResources(); 1232 1233 if (mFirst) { 1234 // make sure touch mode code executes by setting cached value 1235 // to opposite of the added touch mode. 1236 mAttachInfo.mInTouchMode = !mAddedTouchMode; 1237 ensureTouchModeLocally(mAddedTouchMode); 1238 } else { 1239 if (!mPendingOverscanInsets.equals(mAttachInfo.mOverscanInsets)) { 1240 insetsChanged = true; 1241 } 1242 if (!mPendingContentInsets.equals(mAttachInfo.mContentInsets)) { 1243 insetsChanged = true; 1244 } 1245 if (!mPendingVisibleInsets.equals(mAttachInfo.mVisibleInsets)) { 1246 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1247 if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: " 1248 + mAttachInfo.mVisibleInsets); 1249 } 1250 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT 1251 || lp.height == ViewGroup.LayoutParams.WRAP_CONTENT) { 1252 windowSizeMayChange = true; 1253 1254 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL) { 1255 // NOTE -- system code, won't try to do compat mode. 1256 Point size = new Point(); 1257 mDisplay.getRealSize(size); 1258 desiredWindowWidth = size.x; 1259 desiredWindowHeight = size.y; 1260 } else { 1261 DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1262 desiredWindowWidth = packageMetrics.widthPixels; 1263 desiredWindowHeight = packageMetrics.heightPixels; 1264 } 1265 } 1266 } 1267 1268 // Ask host how big it wants to be 1269 windowSizeMayChange |= measureHierarchy(host, lp, res, 1270 desiredWindowWidth, desiredWindowHeight); 1271 } 1272 1273 if (collectViewAttributes()) { 1274 params = lp; 1275 } 1276 if (attachInfo.mForceReportNewAttributes) { 1277 attachInfo.mForceReportNewAttributes = false; 1278 params = lp; 1279 } 1280 1281 if (mFirst || attachInfo.mViewVisibilityChanged) { 1282 attachInfo.mViewVisibilityChanged = false; 1283 int resizeMode = mSoftInputMode & 1284 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST; 1285 // If we are in auto resize mode, then we need to determine 1286 // what mode to use now. 1287 if (resizeMode == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 1288 final int N = attachInfo.mScrollContainers.size(); 1289 for (int i=0; i<N; i++) { 1290 if (attachInfo.mScrollContainers.get(i).isShown()) { 1291 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE; 1292 } 1293 } 1294 if (resizeMode == 0) { 1295 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_PAN; 1296 } 1297 if ((lp.softInputMode & 1298 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) != resizeMode) { 1299 lp.softInputMode = (lp.softInputMode & 1300 ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) | 1301 resizeMode; 1302 params = lp; 1303 } 1304 } 1305 } 1306 1307 if (params != null) { 1308 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 1309 if (!PixelFormat.formatHasAlpha(params.format)) { 1310 params.format = PixelFormat.TRANSLUCENT; 1311 } 1312 } 1313 mAttachInfo.mOverscanRequested = (params.flags 1314 & WindowManager.LayoutParams.FLAG_LAYOUT_IN_OVERSCAN) != 0; 1315 } 1316 1317 if (mFitSystemWindowsRequested) { 1318 mFitSystemWindowsRequested = false; 1319 mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets); 1320 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1321 host.fitSystemWindows(mFitSystemWindowsInsets); 1322 if (mLayoutRequested) { 1323 // Short-circuit catching a new layout request here, so 1324 // we don't need to go through two layout passes when things 1325 // change due to fitting system windows, which can happen a lot. 1326 windowSizeMayChange |= measureHierarchy(host, lp, 1327 mView.getContext().getResources(), 1328 desiredWindowWidth, desiredWindowHeight); 1329 } 1330 } 1331 1332 if (layoutRequested) { 1333 // Clear this now, so that if anything requests a layout in the 1334 // rest of this function we will catch it and re-run a full 1335 // layout pass. 1336 mLayoutRequested = false; 1337 } 1338 1339 boolean windowShouldResize = layoutRequested && windowSizeMayChange 1340 && ((mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) 1341 || (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT && 1342 frame.width() < desiredWindowWidth && frame.width() != mWidth) 1343 || (lp.height == ViewGroup.LayoutParams.WRAP_CONTENT && 1344 frame.height() < desiredWindowHeight && frame.height() != mHeight)); 1345 1346 final boolean computesInternalInsets = 1347 attachInfo.mTreeObserver.hasComputeInternalInsetsListeners(); 1348 1349 boolean insetsPending = false; 1350 int relayoutResult = 0; 1351 1352 if (mFirst || windowShouldResize || insetsChanged || 1353 viewVisibilityChanged || params != null) { 1354 1355 if (viewVisibility == View.VISIBLE) { 1356 // If this window is giving internal insets to the window 1357 // manager, and it is being added or changing its visibility, 1358 // then we want to first give the window manager "fake" 1359 // insets to cause it to effectively ignore the content of 1360 // the window during layout. This avoids it briefly causing 1361 // other windows to resize/move based on the raw frame of the 1362 // window, waiting until we can finish laying out this window 1363 // and get back to the window manager with the ultimately 1364 // computed insets. 1365 insetsPending = computesInternalInsets && (mFirst || viewVisibilityChanged); 1366 } 1367 1368 if (mSurfaceHolder != null) { 1369 mSurfaceHolder.mSurfaceLock.lock(); 1370 mDrawingAllowed = true; 1371 } 1372 1373 boolean hwInitialized = false; 1374 boolean contentInsetsChanged = false; 1375 boolean hadSurface = mSurface.isValid(); 1376 1377 try { 1378 if (DEBUG_LAYOUT) { 1379 Log.i(TAG, "host=w:" + host.getMeasuredWidth() + ", h:" + 1380 host.getMeasuredHeight() + ", params=" + params); 1381 } 1382 1383 final int surfaceGenerationId = mSurface.getGenerationId(); 1384 relayoutResult = relayoutWindow(params, viewVisibility, insetsPending); 1385 if (!mDrawDuringWindowsAnimating) { 1386 mWindowsAnimating |= 1387 (relayoutResult & WindowManagerGlobal.RELAYOUT_RES_ANIMATING) != 0; 1388 } 1389 1390 if (DEBUG_LAYOUT) Log.v(TAG, "relayout: frame=" + frame.toShortString() 1391 + " overscan=" + mPendingOverscanInsets.toShortString() 1392 + " content=" + mPendingContentInsets.toShortString() 1393 + " visible=" + mPendingVisibleInsets.toShortString() 1394 + " surface=" + mSurface); 1395 1396 if (mPendingConfiguration.seq != 0) { 1397 if (DEBUG_CONFIGURATION) Log.v(TAG, "Visible with new config: " 1398 + mPendingConfiguration); 1399 updateConfiguration(mPendingConfiguration, !mFirst); 1400 mPendingConfiguration.seq = 0; 1401 } 1402 1403 final boolean overscanInsetsChanged = !mPendingOverscanInsets.equals( 1404 mAttachInfo.mOverscanInsets); 1405 contentInsetsChanged = !mPendingContentInsets.equals( 1406 mAttachInfo.mContentInsets); 1407 final boolean visibleInsetsChanged = !mPendingVisibleInsets.equals( 1408 mAttachInfo.mVisibleInsets); 1409 if (contentInsetsChanged) { 1410 if (mWidth > 0 && mHeight > 0 && lp != null && 1411 ((lp.systemUiVisibility|lp.subtreeSystemUiVisibility) 1412 & View.SYSTEM_UI_LAYOUT_FLAGS) == 0 && 1413 mSurface != null && mSurface.isValid() && 1414 !mAttachInfo.mTurnOffWindowResizeAnim && 1415 mAttachInfo.mHardwareRenderer != null && 1416 mAttachInfo.mHardwareRenderer.isEnabled() && 1417 mAttachInfo.mHardwareRenderer.validate() && 1418 lp != null && !PixelFormat.formatHasAlpha(lp.format)) { 1419 1420 disposeResizeBuffer(); 1421 1422 boolean completed = false; 1423 HardwareCanvas hwRendererCanvas = mAttachInfo.mHardwareRenderer.getCanvas(); 1424 HardwareCanvas layerCanvas = null; 1425 try { 1426 if (mResizeBuffer == null) { 1427 mResizeBuffer = mAttachInfo.mHardwareRenderer.createHardwareLayer( 1428 mWidth, mHeight, false); 1429 } else if (mResizeBuffer.getWidth() != mWidth || 1430 mResizeBuffer.getHeight() != mHeight) { 1431 mResizeBuffer.resize(mWidth, mHeight); 1432 } 1433 // TODO: should handle create/resize failure 1434 layerCanvas = mResizeBuffer.start(hwRendererCanvas); 1435 final int restoreCount = layerCanvas.save(); 1436 1437 int yoff; 1438 final boolean scrolling = mScroller != null 1439 && mScroller.computeScrollOffset(); 1440 if (scrolling) { 1441 yoff = mScroller.getCurrY(); 1442 mScroller.abortAnimation(); 1443 } else { 1444 yoff = mScrollY; 1445 } 1446 1447 layerCanvas.translate(0, -yoff); 1448 if (mTranslator != null) { 1449 mTranslator.translateCanvas(layerCanvas); 1450 } 1451 1452 DisplayList displayList = mView.mDisplayList; 1453 if (displayList != null) { 1454 layerCanvas.drawDisplayList(displayList, null, 1455 DisplayList.FLAG_CLIP_CHILDREN); 1456 } else { 1457 mView.draw(layerCanvas); 1458 } 1459 1460 drawAccessibilityFocusedDrawableIfNeeded(layerCanvas); 1461 1462 mResizeBufferStartTime = SystemClock.uptimeMillis(); 1463 mResizeBufferDuration = mView.getResources().getInteger( 1464 com.android.internal.R.integer.config_mediumAnimTime); 1465 completed = true; 1466 1467 layerCanvas.restoreToCount(restoreCount); 1468 } catch (OutOfMemoryError e) { 1469 Log.w(TAG, "Not enough memory for content change anim buffer", e); 1470 } finally { 1471 if (mResizeBuffer != null) { 1472 mResizeBuffer.end(hwRendererCanvas); 1473 if (!completed) { 1474 disposeResizeBuffer(); 1475 } 1476 } 1477 } 1478 } 1479 mAttachInfo.mContentInsets.set(mPendingContentInsets); 1480 if (DEBUG_LAYOUT) Log.v(TAG, "Content insets changing to: " 1481 + mAttachInfo.mContentInsets); 1482 } 1483 if (overscanInsetsChanged) { 1484 mAttachInfo.mOverscanInsets.set(mPendingOverscanInsets); 1485 if (DEBUG_LAYOUT) Log.v(TAG, "Overscan insets changing to: " 1486 + mAttachInfo.mOverscanInsets); 1487 // Need to relayout with content insets. 1488 contentInsetsChanged = true; 1489 } 1490 if (contentInsetsChanged || mLastSystemUiVisibility != 1491 mAttachInfo.mSystemUiVisibility || mFitSystemWindowsRequested 1492 || mLastOverscanRequested != mAttachInfo.mOverscanRequested) { 1493 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1494 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1495 mFitSystemWindowsRequested = false; 1496 mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets); 1497 host.fitSystemWindows(mFitSystemWindowsInsets); 1498 } 1499 if (visibleInsetsChanged) { 1500 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1501 if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: " 1502 + mAttachInfo.mVisibleInsets); 1503 } 1504 1505 if (!hadSurface) { 1506 if (mSurface.isValid()) { 1507 // If we are creating a new surface, then we need to 1508 // completely redraw it. Also, when we get to the 1509 // point of drawing it we will hold off and schedule 1510 // a new traversal instead. This is so we can tell the 1511 // window manager about all of the windows being displayed 1512 // before actually drawing them, so it can display then 1513 // all at once. 1514 newSurface = true; 1515 mFullRedrawNeeded = true; 1516 mPreviousTransparentRegion.setEmpty(); 1517 1518 if (mAttachInfo.mHardwareRenderer != null) { 1519 try { 1520 hwInitialized = mAttachInfo.mHardwareRenderer.initialize( 1521 mHolder.getSurface()); 1522 } catch (Surface.OutOfResourcesException e) { 1523 handleOutOfResourcesException(e); 1524 return; 1525 } 1526 } 1527 } 1528 } else if (!mSurface.isValid()) { 1529 // If the surface has been removed, then reset the scroll 1530 // positions. 1531 if (mLastScrolledFocus != null) { 1532 mLastScrolledFocus.clear(); 1533 } 1534 mScrollY = mCurScrollY = 0; 1535 if (mScroller != null) { 1536 mScroller.abortAnimation(); 1537 } 1538 disposeResizeBuffer(); 1539 // Our surface is gone 1540 if (mAttachInfo.mHardwareRenderer != null && 1541 mAttachInfo.mHardwareRenderer.isEnabled()) { 1542 mAttachInfo.mHardwareRenderer.destroy(true); 1543 } 1544 } else if (surfaceGenerationId != mSurface.getGenerationId() && 1545 mSurfaceHolder == null && mAttachInfo.mHardwareRenderer != null) { 1546 mFullRedrawNeeded = true; 1547 try { 1548 mAttachInfo.mHardwareRenderer.updateSurface(mHolder.getSurface()); 1549 } catch (Surface.OutOfResourcesException e) { 1550 handleOutOfResourcesException(e); 1551 return; 1552 } 1553 } 1554 } catch (RemoteException e) { 1555 } 1556 1557 if (DEBUG_ORIENTATION) Log.v( 1558 TAG, "Relayout returned: frame=" + frame + ", surface=" + mSurface); 1559 1560 attachInfo.mWindowLeft = frame.left; 1561 attachInfo.mWindowTop = frame.top; 1562 1563 // !!FIXME!! This next section handles the case where we did not get the 1564 // window size we asked for. We should avoid this by getting a maximum size from 1565 // the window session beforehand. 1566 if (mWidth != frame.width() || mHeight != frame.height()) { 1567 mWidth = frame.width(); 1568 mHeight = frame.height(); 1569 } 1570 1571 if (mSurfaceHolder != null) { 1572 // The app owns the surface; tell it about what is going on. 1573 if (mSurface.isValid()) { 1574 // XXX .copyFrom() doesn't work! 1575 //mSurfaceHolder.mSurface.copyFrom(mSurface); 1576 mSurfaceHolder.mSurface = mSurface; 1577 } 1578 mSurfaceHolder.setSurfaceFrameSize(mWidth, mHeight); 1579 mSurfaceHolder.mSurfaceLock.unlock(); 1580 if (mSurface.isValid()) { 1581 if (!hadSurface) { 1582 mSurfaceHolder.ungetCallbacks(); 1583 1584 mIsCreating = true; 1585 mSurfaceHolderCallback.surfaceCreated(mSurfaceHolder); 1586 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1587 if (callbacks != null) { 1588 for (SurfaceHolder.Callback c : callbacks) { 1589 c.surfaceCreated(mSurfaceHolder); 1590 } 1591 } 1592 surfaceChanged = true; 1593 } 1594 if (surfaceChanged) { 1595 mSurfaceHolderCallback.surfaceChanged(mSurfaceHolder, 1596 lp.format, mWidth, mHeight); 1597 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1598 if (callbacks != null) { 1599 for (SurfaceHolder.Callback c : callbacks) { 1600 c.surfaceChanged(mSurfaceHolder, lp.format, 1601 mWidth, mHeight); 1602 } 1603 } 1604 } 1605 mIsCreating = false; 1606 } else if (hadSurface) { 1607 mSurfaceHolder.ungetCallbacks(); 1608 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1609 mSurfaceHolderCallback.surfaceDestroyed(mSurfaceHolder); 1610 if (callbacks != null) { 1611 for (SurfaceHolder.Callback c : callbacks) { 1612 c.surfaceDestroyed(mSurfaceHolder); 1613 } 1614 } 1615 mSurfaceHolder.mSurfaceLock.lock(); 1616 try { 1617 mSurfaceHolder.mSurface = new Surface(); 1618 } finally { 1619 mSurfaceHolder.mSurfaceLock.unlock(); 1620 } 1621 } 1622 } 1623 1624 if (mAttachInfo.mHardwareRenderer != null && 1625 mAttachInfo.mHardwareRenderer.isEnabled()) { 1626 if (hwInitialized || 1627 mWidth != mAttachInfo.mHardwareRenderer.getWidth() || 1628 mHeight != mAttachInfo.mHardwareRenderer.getHeight()) { 1629 mAttachInfo.mHardwareRenderer.setup(mWidth, mHeight); 1630 if (!hwInitialized) { 1631 mAttachInfo.mHardwareRenderer.invalidate(mHolder.getSurface()); 1632 mFullRedrawNeeded = true; 1633 } 1634 } 1635 } 1636 1637 if (!mStopped) { 1638 boolean focusChangedDueToTouchMode = ensureTouchModeLocally( 1639 (relayoutResult&WindowManagerGlobal.RELAYOUT_RES_IN_TOUCH_MODE) != 0); 1640 if (focusChangedDueToTouchMode || mWidth != host.getMeasuredWidth() 1641 || mHeight != host.getMeasuredHeight() || contentInsetsChanged) { 1642 int childWidthMeasureSpec = getRootMeasureSpec(mWidth, lp.width); 1643 int childHeightMeasureSpec = getRootMeasureSpec(mHeight, lp.height); 1644 1645 if (DEBUG_LAYOUT) Log.v(TAG, "Ooops, something changed! mWidth=" 1646 + mWidth + " measuredWidth=" + host.getMeasuredWidth() 1647 + " mHeight=" + mHeight 1648 + " measuredHeight=" + host.getMeasuredHeight() 1649 + " coveredInsetsChanged=" + contentInsetsChanged); 1650 1651 // Ask host how big it wants to be 1652 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1653 1654 // Implementation of weights from WindowManager.LayoutParams 1655 // We just grow the dimensions as needed and re-measure if 1656 // needs be 1657 int width = host.getMeasuredWidth(); 1658 int height = host.getMeasuredHeight(); 1659 boolean measureAgain = false; 1660 1661 if (lp.horizontalWeight > 0.0f) { 1662 width += (int) ((mWidth - width) * lp.horizontalWeight); 1663 childWidthMeasureSpec = MeasureSpec.makeMeasureSpec(width, 1664 MeasureSpec.EXACTLY); 1665 measureAgain = true; 1666 } 1667 if (lp.verticalWeight > 0.0f) { 1668 height += (int) ((mHeight - height) * lp.verticalWeight); 1669 childHeightMeasureSpec = MeasureSpec.makeMeasureSpec(height, 1670 MeasureSpec.EXACTLY); 1671 measureAgain = true; 1672 } 1673 1674 if (measureAgain) { 1675 if (DEBUG_LAYOUT) Log.v(TAG, 1676 "And hey let's measure once more: width=" + width 1677 + " height=" + height); 1678 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1679 } 1680 1681 layoutRequested = true; 1682 } 1683 } 1684 } else { 1685 // Not the first pass and no window/insets/visibility change but the window 1686 // may have moved and we need check that and if so to update the left and right 1687 // in the attach info. We translate only the window frame since on window move 1688 // the window manager tells us only for the new frame but the insets are the 1689 // same and we do not want to translate them more than once. 1690 1691 // TODO: Well, we are checking whether the frame has changed similarly 1692 // to how this is done for the insets. This is however incorrect since 1693 // the insets and the frame are translated. For example, the old frame 1694 // was (1, 1 - 1, 1) and was translated to say (2, 2 - 2, 2), now the new 1695 // reported frame is (2, 2 - 2, 2) which implies no change but this is not 1696 // true since we are comparing a not translated value to a translated one. 1697 // This scenario is rare but we may want to fix that. 1698 1699 final boolean windowMoved = (attachInfo.mWindowLeft != frame.left 1700 || attachInfo.mWindowTop != frame.top); 1701 if (windowMoved) { 1702 if (mTranslator != null) { 1703 mTranslator.translateRectInScreenToAppWinFrame(frame); 1704 } 1705 attachInfo.mWindowLeft = frame.left; 1706 attachInfo.mWindowTop = frame.top; 1707 } 1708 } 1709 1710 final boolean didLayout = layoutRequested && !mStopped; 1711 boolean triggerGlobalLayoutListener = didLayout 1712 || attachInfo.mRecomputeGlobalAttributes; 1713 if (didLayout) { 1714 performLayout(lp, desiredWindowWidth, desiredWindowHeight); 1715 1716 // By this point all views have been sized and positioned 1717 // We can compute the transparent area 1718 1719 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 1720 // start out transparent 1721 // TODO: AVOID THAT CALL BY CACHING THE RESULT? 1722 host.getLocationInWindow(mTmpLocation); 1723 mTransparentRegion.set(mTmpLocation[0], mTmpLocation[1], 1724 mTmpLocation[0] + host.mRight - host.mLeft, 1725 mTmpLocation[1] + host.mBottom - host.mTop); 1726 1727 host.gatherTransparentRegion(mTransparentRegion); 1728 if (mTranslator != null) { 1729 mTranslator.translateRegionInWindowToScreen(mTransparentRegion); 1730 } 1731 1732 if (!mTransparentRegion.equals(mPreviousTransparentRegion)) { 1733 mPreviousTransparentRegion.set(mTransparentRegion); 1734 mFullRedrawNeeded = true; 1735 // reconfigure window manager 1736 try { 1737 mWindowSession.setTransparentRegion(mWindow, mTransparentRegion); 1738 } catch (RemoteException e) { 1739 } 1740 } 1741 } 1742 1743 if (DBG) { 1744 System.out.println("======================================"); 1745 System.out.println("performTraversals -- after setFrame"); 1746 host.debug(); 1747 } 1748 } 1749 1750 if (triggerGlobalLayoutListener) { 1751 attachInfo.mRecomputeGlobalAttributes = false; 1752 attachInfo.mTreeObserver.dispatchOnGlobalLayout(); 1753 } 1754 1755 if (computesInternalInsets) { 1756 // Clear the original insets. 1757 final ViewTreeObserver.InternalInsetsInfo insets = attachInfo.mGivenInternalInsets; 1758 insets.reset(); 1759 1760 // Compute new insets in place. 1761 attachInfo.mTreeObserver.dispatchOnComputeInternalInsets(insets); 1762 1763 // Tell the window manager. 1764 if (insetsPending || !mLastGivenInsets.equals(insets)) { 1765 mLastGivenInsets.set(insets); 1766 1767 // Translate insets to screen coordinates if needed. 1768 final Rect contentInsets; 1769 final Rect visibleInsets; 1770 final Region touchableRegion; 1771 if (mTranslator != null) { 1772 contentInsets = mTranslator.getTranslatedContentInsets(insets.contentInsets); 1773 visibleInsets = mTranslator.getTranslatedVisibleInsets(insets.visibleInsets); 1774 touchableRegion = mTranslator.getTranslatedTouchableArea(insets.touchableRegion); 1775 } else { 1776 contentInsets = insets.contentInsets; 1777 visibleInsets = insets.visibleInsets; 1778 touchableRegion = insets.touchableRegion; 1779 } 1780 1781 try { 1782 mWindowSession.setInsets(mWindow, insets.mTouchableInsets, 1783 contentInsets, visibleInsets, touchableRegion); 1784 } catch (RemoteException e) { 1785 } 1786 } 1787 } 1788 1789 boolean skipDraw = false; 1790 1791 if (mFirst) { 1792 // handle first focus request 1793 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: mView.hasFocus()=" 1794 + mView.hasFocus()); 1795 if (mView != null) { 1796 if (!mView.hasFocus()) { 1797 mView.requestFocus(View.FOCUS_FORWARD); 1798 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: requested focused view=" 1799 + mView.findFocus()); 1800 } else { 1801 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: existing focused view=" 1802 + mView.findFocus()); 1803 } 1804 } 1805 if ((relayoutResult & WindowManagerGlobal.RELAYOUT_RES_ANIMATING) != 0) { 1806 // The first time we relayout the window, if the system is 1807 // doing window animations, we want to hold of on any future 1808 // draws until the animation is done. 1809 mWindowsAnimating = true; 1810 } 1811 } else if (mWindowsAnimating) { 1812 skipDraw = true; 1813 } 1814 1815 mFirst = false; 1816 mWillDrawSoon = false; 1817 mNewSurfaceNeeded = false; 1818 mViewVisibility = viewVisibility; 1819 1820 if (mAttachInfo.mHasWindowFocus) { 1821 final boolean imTarget = WindowManager.LayoutParams 1822 .mayUseInputMethod(mWindowAttributes.flags); 1823 if (imTarget != mLastWasImTarget) { 1824 mLastWasImTarget = imTarget; 1825 InputMethodManager imm = InputMethodManager.peekInstance(); 1826 if (imm != null && imTarget) { 1827 imm.startGettingWindowFocus(mView); 1828 imm.onWindowFocus(mView, mView.findFocus(), 1829 mWindowAttributes.softInputMode, 1830 !mHasHadWindowFocus, mWindowAttributes.flags); 1831 } 1832 } 1833 } 1834 1835 // Remember if we must report the next draw. 1836 if ((relayoutResult & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 1837 mReportNextDraw = true; 1838 } 1839 1840 boolean cancelDraw = attachInfo.mTreeObserver.dispatchOnPreDraw() || 1841 viewVisibility != View.VISIBLE; 1842 1843 if (!cancelDraw && !newSurface) { 1844 if (!skipDraw || mReportNextDraw) { 1845 if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 1846 for (int i = 0; i < mPendingTransitions.size(); ++i) { 1847 mPendingTransitions.get(i).startChangingAnimations(); 1848 } 1849 mPendingTransitions.clear(); 1850 } 1851 1852 performDraw(); 1853 } 1854 } else { 1855 if (viewVisibility == View.VISIBLE) { 1856 // Try again 1857 scheduleTraversals(); 1858 } else if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 1859 for (int i = 0; i < mPendingTransitions.size(); ++i) { 1860 mPendingTransitions.get(i).endChangingAnimations(); 1861 } 1862 mPendingTransitions.clear(); 1863 } 1864 } 1865 1866 mIsInTraversal = false; 1867 } 1868 1869 private void handleOutOfResourcesException(Surface.OutOfResourcesException e) { 1870 Log.e(TAG, "OutOfResourcesException initializing HW surface", e); 1871 try { 1872 if (!mWindowSession.outOfMemory(mWindow) && 1873 Process.myUid() != Process.SYSTEM_UID) { 1874 Slog.w(TAG, "No processes killed for memory; killing self"); 1875 Process.killProcess(Process.myPid()); 1876 } 1877 } catch (RemoteException ex) { 1878 } 1879 mLayoutRequested = true; // ask wm for a new surface next time. 1880 } 1881 1882 private void performMeasure(int childWidthMeasureSpec, int childHeightMeasureSpec) { 1883 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "measure"); 1884 try { 1885 mView.measure(childWidthMeasureSpec, childHeightMeasureSpec); 1886 } finally { 1887 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 1888 } 1889 } 1890 1891 /** 1892 * Called by {@link android.view.View#isInLayout()} to determine whether the view hierarchy 1893 * is currently undergoing a layout pass. 1894 * 1895 * @return whether the view hierarchy is currently undergoing a layout pass 1896 */ 1897 boolean isInLayout() { 1898 return mInLayout; 1899 } 1900 1901 /** 1902 * Called by {@link android.view.View#requestLayout()} if the view hierarchy is currently 1903 * undergoing a layout pass. requestLayout() should not generally be called during layout, 1904 * unless the container hierarchy knows what it is doing (i.e., it is fine as long as 1905 * all children in that container hierarchy are measured and laid out at the end of the layout 1906 * pass for that container). If requestLayout() is called anyway, we handle it correctly 1907 * by registering all requesters during a frame as it proceeds. At the end of the frame, 1908 * we check all of those views to see if any still have pending layout requests, which 1909 * indicates that they were not correctly handled by their container hierarchy. If that is 1910 * the case, we clear all such flags in the tree, to remove the buggy flag state that leads 1911 * to blank containers, and force a second request/measure/layout pass in this frame. If 1912 * more requestLayout() calls are received during that second layout pass, we post those 1913 * requests to the next frame to avoid possible infinite loops. 1914 * 1915 * <p>The return value from this method indicates whether the request should proceed 1916 * (if it is a request during the first layout pass) or should be skipped and posted to the 1917 * next frame (if it is a request during the second layout pass).</p> 1918 * 1919 * @param view the view that requested the layout. 1920 * 1921 * @return true if request should proceed, false otherwise. 1922 */ 1923 boolean requestLayoutDuringLayout(final View view) { 1924 if (view.mParent == null || view.mAttachInfo == null) { 1925 // Would not normally trigger another layout, so just let it pass through as usual 1926 return true; 1927 } 1928 if (!mLayoutRequesters.contains(view)) { 1929 mLayoutRequesters.add(view); 1930 } 1931 if (!mHandlingLayoutInLayoutRequest) { 1932 // Let the request proceed normally; it will be processed in a second layout pass 1933 // if necessary 1934 return true; 1935 } else { 1936 // Don't let the request proceed during the second layout pass. 1937 // It will post to the next frame instead. 1938 return false; 1939 } 1940 } 1941 1942 private void performLayout(WindowManager.LayoutParams lp, int desiredWindowWidth, 1943 int desiredWindowHeight) { 1944 mLayoutRequested = false; 1945 mScrollMayChange = true; 1946 mInLayout = true; 1947 1948 final View host = mView; 1949 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) { 1950 Log.v(TAG, "Laying out " + host + " to (" + 1951 host.getMeasuredWidth() + ", " + host.getMeasuredHeight() + ")"); 1952 } 1953 1954 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "layout"); 1955 try { 1956 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 1957 1958 mInLayout = false; 1959 int numViewsRequestingLayout = mLayoutRequesters.size(); 1960 if (numViewsRequestingLayout > 0) { 1961 // requestLayout() was called during layout. 1962 // If no layout-request flags are set on the requesting views, there is no problem. 1963 // If some requests are still pending, then we need to clear those flags and do 1964 // a full request/measure/layout pass to handle this situation. 1965 ArrayList<View> validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, 1966 false); 1967 if (validLayoutRequesters != null) { 1968 // Set this flag to indicate that any further requests are happening during 1969 // the second pass, which may result in posting those requests to the next 1970 // frame instead 1971 mHandlingLayoutInLayoutRequest = true; 1972 1973 // Process fresh layout requests, then measure and layout 1974 int numValidRequests = validLayoutRequesters.size(); 1975 for (int i = 0; i < numValidRequests; ++i) { 1976 final View view = validLayoutRequesters.get(i); 1977 Log.w("View", "requestLayout() improperly called by " + view + 1978 " during layout: running second layout pass"); 1979 view.requestLayout(); 1980 } 1981 measureHierarchy(host, lp, mView.getContext().getResources(), 1982 desiredWindowWidth, desiredWindowHeight); 1983 mInLayout = true; 1984 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 1985 1986 mHandlingLayoutInLayoutRequest = false; 1987 1988 // Check the valid requests again, this time without checking/clearing the 1989 // layout flags, since requests happening during the second pass get noop'd 1990 validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, true); 1991 if (validLayoutRequesters != null) { 1992 final ArrayList<View> finalRequesters = validLayoutRequesters; 1993 // Post second-pass requests to the next frame 1994 getRunQueue().post(new Runnable() { 1995 @Override 1996 public void run() { 1997 int numValidRequests = finalRequesters.size(); 1998 for (int i = 0; i < numValidRequests; ++i) { 1999 final View view = finalRequesters.get(i); 2000 Log.w("View", "requestLayout() improperly called by " + view + 2001 " during second layout pass: posting in next frame"); 2002 view.requestLayout(); 2003 } 2004 } 2005 }); 2006 } 2007 } 2008 2009 } 2010 } finally { 2011 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2012 } 2013 mInLayout = false; 2014 } 2015 2016 /** 2017 * This method is called during layout when there have been calls to requestLayout() during 2018 * layout. It walks through the list of views that requested layout to determine which ones 2019 * still need it, based on visibility in the hierarchy and whether they have already been 2020 * handled (as is usually the case with ListView children). 2021 * 2022 * @param layoutRequesters The list of views that requested layout during layout 2023 * @param secondLayoutRequests Whether the requests were issued during the second layout pass. 2024 * If so, the FORCE_LAYOUT flag was not set on requesters. 2025 * @return A list of the actual views that still need to be laid out. 2026 */ 2027 private ArrayList<View> getValidLayoutRequesters(ArrayList<View> layoutRequesters, 2028 boolean secondLayoutRequests) { 2029 2030 int numViewsRequestingLayout = layoutRequesters.size(); 2031 ArrayList<View> validLayoutRequesters = null; 2032 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2033 View view = layoutRequesters.get(i); 2034 if (view != null && view.mAttachInfo != null && view.mParent != null && 2035 (secondLayoutRequests || (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) == 2036 View.PFLAG_FORCE_LAYOUT)) { 2037 boolean gone = false; 2038 View parent = view; 2039 // Only trigger new requests for views in a non-GONE hierarchy 2040 while (parent != null) { 2041 if ((parent.mViewFlags & View.VISIBILITY_MASK) == View.GONE) { 2042 gone = true; 2043 break; 2044 } 2045 if (parent.mParent instanceof View) { 2046 parent = (View) parent.mParent; 2047 } else { 2048 parent = null; 2049 } 2050 } 2051 if (!gone) { 2052 if (validLayoutRequesters == null) { 2053 validLayoutRequesters = new ArrayList<View>(); 2054 } 2055 validLayoutRequesters.add(view); 2056 } 2057 } 2058 } 2059 if (!secondLayoutRequests) { 2060 // If we're checking the layout flags, then we need to clean them up also 2061 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2062 View view = layoutRequesters.get(i); 2063 while (view != null && 2064 (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) != 0) { 2065 view.mPrivateFlags &= ~View.PFLAG_FORCE_LAYOUT; 2066 if (view.mParent instanceof View) { 2067 view = (View) view.mParent; 2068 } else { 2069 view = null; 2070 } 2071 } 2072 } 2073 } 2074 layoutRequesters.clear(); 2075 return validLayoutRequesters; 2076 } 2077 2078 public void requestTransparentRegion(View child) { 2079 // the test below should not fail unless someone is messing with us 2080 checkThread(); 2081 if (mView == child) { 2082 mView.mPrivateFlags |= View.PFLAG_REQUEST_TRANSPARENT_REGIONS; 2083 // Need to make sure we re-evaluate the window attributes next 2084 // time around, to ensure the window has the correct format. 2085 mWindowAttributesChanged = true; 2086 mWindowAttributesChangesFlag = 0; 2087 requestLayout(); 2088 } 2089 } 2090 2091 /** 2092 * Figures out the measure spec for the root view in a window based on it's 2093 * layout params. 2094 * 2095 * @param windowSize 2096 * The available width or height of the window 2097 * 2098 * @param rootDimension 2099 * The layout params for one dimension (width or height) of the 2100 * window. 2101 * 2102 * @return The measure spec to use to measure the root view. 2103 */ 2104 private static int getRootMeasureSpec(int windowSize, int rootDimension) { 2105 int measureSpec; 2106 switch (rootDimension) { 2107 2108 case ViewGroup.LayoutParams.MATCH_PARENT: 2109 // Window can't resize. Force root view to be windowSize. 2110 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.EXACTLY); 2111 break; 2112 case ViewGroup.LayoutParams.WRAP_CONTENT: 2113 // Window can resize. Set max size for root view. 2114 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.AT_MOST); 2115 break; 2116 default: 2117 // Window wants to be an exact size. Force root view to be that size. 2118 measureSpec = MeasureSpec.makeMeasureSpec(rootDimension, MeasureSpec.EXACTLY); 2119 break; 2120 } 2121 return measureSpec; 2122 } 2123 2124 int mHardwareYOffset; 2125 int mResizeAlpha; 2126 final Paint mResizePaint = new Paint(); 2127 2128 public void onHardwarePreDraw(HardwareCanvas canvas) { 2129 canvas.translate(0, -mHardwareYOffset); 2130 } 2131 2132 public void onHardwarePostDraw(HardwareCanvas canvas) { 2133 if (mResizeBuffer != null) { 2134 mResizePaint.setAlpha(mResizeAlpha); 2135 canvas.drawHardwareLayer(mResizeBuffer, 0.0f, mHardwareYOffset, mResizePaint); 2136 } 2137 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2138 } 2139 2140 /** 2141 * @hide 2142 */ 2143 void outputDisplayList(View view) { 2144 if (mAttachInfo != null && mAttachInfo.mHardwareCanvas != null) { 2145 DisplayList displayList = view.getDisplayList(); 2146 if (displayList != null) { 2147 mAttachInfo.mHardwareCanvas.outputDisplayList(displayList); 2148 } 2149 } 2150 } 2151 2152 /** 2153 * @see #PROPERTY_PROFILE_RENDERING 2154 */ 2155 private void profileRendering(boolean enabled) { 2156 if (mProfileRendering) { 2157 mRenderProfilingEnabled = enabled; 2158 2159 if (mRenderProfiler != null) { 2160 mChoreographer.removeFrameCallback(mRenderProfiler); 2161 } 2162 if (mRenderProfilingEnabled) { 2163 if (mRenderProfiler == null) { 2164 mRenderProfiler = new Choreographer.FrameCallback() { 2165 @Override 2166 public void doFrame(long frameTimeNanos) { 2167 mDirty.set(0, 0, mWidth, mHeight); 2168 scheduleTraversals(); 2169 if (mRenderProfilingEnabled) { 2170 mChoreographer.postFrameCallback(mRenderProfiler); 2171 } 2172 } 2173 }; 2174 } 2175 mChoreographer.postFrameCallback(mRenderProfiler); 2176 } else { 2177 mRenderProfiler = null; 2178 } 2179 } 2180 } 2181 2182 /** 2183 * Called from draw() when DEBUG_FPS is enabled 2184 */ 2185 private void trackFPS() { 2186 // Tracks frames per second drawn. First value in a series of draws may be bogus 2187 // because it down not account for the intervening idle time 2188 long nowTime = System.currentTimeMillis(); 2189 if (mFpsStartTime < 0) { 2190 mFpsStartTime = mFpsPrevTime = nowTime; 2191 mFpsNumFrames = 0; 2192 } else { 2193 ++mFpsNumFrames; 2194 String thisHash = Integer.toHexString(System.identityHashCode(this)); 2195 long frameTime = nowTime - mFpsPrevTime; 2196 long totalTime = nowTime - mFpsStartTime; 2197 Log.v(TAG, "0x" + thisHash + "\tFrame time:\t" + frameTime); 2198 mFpsPrevTime = nowTime; 2199 if (totalTime > 1000) { 2200 float fps = (float) mFpsNumFrames * 1000 / totalTime; 2201 Log.v(TAG, "0x" + thisHash + "\tFPS:\t" + fps); 2202 mFpsStartTime = nowTime; 2203 mFpsNumFrames = 0; 2204 } 2205 } 2206 } 2207 2208 private void performDraw() { 2209 if (!mAttachInfo.mScreenOn && !mReportNextDraw) { 2210 return; 2211 } 2212 2213 final boolean fullRedrawNeeded = mFullRedrawNeeded; 2214 mFullRedrawNeeded = false; 2215 2216 mIsDrawing = true; 2217 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "draw"); 2218 try { 2219 draw(fullRedrawNeeded); 2220 } finally { 2221 mIsDrawing = false; 2222 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2223 } 2224 2225 if (mReportNextDraw) { 2226 mReportNextDraw = false; 2227 2228 if (LOCAL_LOGV) { 2229 Log.v(TAG, "FINISHED DRAWING: " + mWindowAttributes.getTitle()); 2230 } 2231 if (mSurfaceHolder != null && mSurface.isValid()) { 2232 mSurfaceHolderCallback.surfaceRedrawNeeded(mSurfaceHolder); 2233 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 2234 if (callbacks != null) { 2235 for (SurfaceHolder.Callback c : callbacks) { 2236 if (c instanceof SurfaceHolder.Callback2) { 2237 ((SurfaceHolder.Callback2)c).surfaceRedrawNeeded( 2238 mSurfaceHolder); 2239 } 2240 } 2241 } 2242 } 2243 try { 2244 mWindowSession.finishDrawing(mWindow); 2245 } catch (RemoteException e) { 2246 } 2247 } 2248 } 2249 2250 private void draw(boolean fullRedrawNeeded) { 2251 Surface surface = mSurface; 2252 if (!surface.isValid()) { 2253 return; 2254 } 2255 2256 if (DEBUG_FPS) { 2257 trackFPS(); 2258 } 2259 2260 if (!sFirstDrawComplete) { 2261 synchronized (sFirstDrawHandlers) { 2262 sFirstDrawComplete = true; 2263 final int count = sFirstDrawHandlers.size(); 2264 for (int i = 0; i< count; i++) { 2265 mHandler.post(sFirstDrawHandlers.get(i)); 2266 } 2267 } 2268 } 2269 2270 scrollToRectOrFocus(null, false); 2271 2272 final AttachInfo attachInfo = mAttachInfo; 2273 if (attachInfo.mViewScrollChanged) { 2274 attachInfo.mViewScrollChanged = false; 2275 attachInfo.mTreeObserver.dispatchOnScrollChanged(); 2276 } 2277 2278 int yoff; 2279 boolean animating = mScroller != null && mScroller.computeScrollOffset(); 2280 if (animating) { 2281 yoff = mScroller.getCurrY(); 2282 } else { 2283 yoff = mScrollY; 2284 } 2285 if (mCurScrollY != yoff) { 2286 mCurScrollY = yoff; 2287 fullRedrawNeeded = true; 2288 } 2289 2290 final float appScale = attachInfo.mApplicationScale; 2291 final boolean scalingRequired = attachInfo.mScalingRequired; 2292 2293 int resizeAlpha = 0; 2294 if (mResizeBuffer != null) { 2295 long deltaTime = SystemClock.uptimeMillis() - mResizeBufferStartTime; 2296 if (deltaTime < mResizeBufferDuration) { 2297 float amt = deltaTime/(float) mResizeBufferDuration; 2298 amt = mResizeInterpolator.getInterpolation(amt); 2299 animating = true; 2300 resizeAlpha = 255 - (int)(amt*255); 2301 } else { 2302 disposeResizeBuffer(); 2303 } 2304 } 2305 2306 final Rect dirty = mDirty; 2307 if (mSurfaceHolder != null) { 2308 // The app owns the surface, we won't draw. 2309 dirty.setEmpty(); 2310 if (animating) { 2311 if (mScroller != null) { 2312 mScroller.abortAnimation(); 2313 } 2314 disposeResizeBuffer(); 2315 } 2316 return; 2317 } 2318 2319 if (fullRedrawNeeded) { 2320 attachInfo.mIgnoreDirtyState = true; 2321 dirty.set(0, 0, (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 2322 } 2323 2324 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2325 Log.v(TAG, "Draw " + mView + "/" 2326 + mWindowAttributes.getTitle() 2327 + ": dirty={" + dirty.left + "," + dirty.top 2328 + "," + dirty.right + "," + dirty.bottom + "} surface=" 2329 + surface + " surface.isValid()=" + surface.isValid() + ", appScale:" + 2330 appScale + ", width=" + mWidth + ", height=" + mHeight); 2331 } 2332 2333 invalidateDisplayLists(); 2334 2335 attachInfo.mTreeObserver.dispatchOnDraw(); 2336 2337 if (!dirty.isEmpty() || mIsAnimating) { 2338 if (attachInfo.mHardwareRenderer != null && attachInfo.mHardwareRenderer.isEnabled()) { 2339 // Draw with hardware renderer. 2340 mIsAnimating = false; 2341 mHardwareYOffset = yoff; 2342 mResizeAlpha = resizeAlpha; 2343 2344 mCurrentDirty.set(dirty); 2345 dirty.setEmpty(); 2346 2347 attachInfo.mHardwareRenderer.draw(mView, attachInfo, this, 2348 animating ? null : mCurrentDirty); 2349 } else { 2350 // If we get here with a disabled & requested hardware renderer, something went 2351 // wrong (an invalidate posted right before we destroyed the hardware surface 2352 // for instance) so we should just bail out. Locking the surface with software 2353 // rendering at this point would lock it forever and prevent hardware renderer 2354 // from doing its job when it comes back. 2355 // Before we request a new frame we must however attempt to reinitiliaze the 2356 // hardware renderer if it's in requested state. This would happen after an 2357 // eglTerminate() for instance. 2358 if (attachInfo.mHardwareRenderer != null && 2359 !attachInfo.mHardwareRenderer.isEnabled() && 2360 attachInfo.mHardwareRenderer.isRequested()) { 2361 2362 try { 2363 attachInfo.mHardwareRenderer.initializeIfNeeded(mWidth, mHeight, 2364 mHolder.getSurface()); 2365 } catch (Surface.OutOfResourcesException e) { 2366 handleOutOfResourcesException(e); 2367 return; 2368 } 2369 2370 mFullRedrawNeeded = true; 2371 scheduleTraversals(); 2372 return; 2373 } 2374 2375 if (!drawSoftware(surface, attachInfo, yoff, scalingRequired, dirty)) { 2376 return; 2377 } 2378 } 2379 } 2380 2381 if (animating) { 2382 mFullRedrawNeeded = true; 2383 scheduleTraversals(); 2384 } 2385 } 2386 2387 /** 2388 * @return true if drawing was succesfull, false if an error occurred 2389 */ 2390 private boolean drawSoftware(Surface surface, AttachInfo attachInfo, int yoff, 2391 boolean scalingRequired, Rect dirty) { 2392 2393 // Draw with software renderer. 2394 Canvas canvas; 2395 try { 2396 int left = dirty.left; 2397 int top = dirty.top; 2398 int right = dirty.right; 2399 int bottom = dirty.bottom; 2400 2401 canvas = mSurface.lockCanvas(dirty); 2402 2403 // The dirty rectangle can be modified by Surface.lockCanvas() 2404 //noinspection ConstantConditions 2405 if (left != dirty.left || top != dirty.top || right != dirty.right || 2406 bottom != dirty.bottom) { 2407 attachInfo.mIgnoreDirtyState = true; 2408 } 2409 2410 // TODO: Do this in native 2411 canvas.setDensity(mDensity); 2412 } catch (Surface.OutOfResourcesException e) { 2413 handleOutOfResourcesException(e); 2414 return false; 2415 } catch (IllegalArgumentException e) { 2416 Log.e(TAG, "Could not lock surface", e); 2417 // Don't assume this is due to out of memory, it could be 2418 // something else, and if it is something else then we could 2419 // kill stuff (or ourself) for no reason. 2420 mLayoutRequested = true; // ask wm for a new surface next time. 2421 return false; 2422 } 2423 2424 try { 2425 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2426 Log.v(TAG, "Surface " + surface + " drawing to bitmap w=" 2427 + canvas.getWidth() + ", h=" + canvas.getHeight()); 2428 //canvas.drawARGB(255, 255, 0, 0); 2429 } 2430 2431 // If this bitmap's format includes an alpha channel, we 2432 // need to clear it before drawing so that the child will 2433 // properly re-composite its drawing on a transparent 2434 // background. This automatically respects the clip/dirty region 2435 // or 2436 // If we are applying an offset, we need to clear the area 2437 // where the offset doesn't appear to avoid having garbage 2438 // left in the blank areas. 2439 if (!canvas.isOpaque() || yoff != 0) { 2440 canvas.drawColor(0, PorterDuff.Mode.CLEAR); 2441 } 2442 2443 dirty.setEmpty(); 2444 mIsAnimating = false; 2445 attachInfo.mDrawingTime = SystemClock.uptimeMillis(); 2446 mView.mPrivateFlags |= View.PFLAG_DRAWN; 2447 2448 if (DEBUG_DRAW) { 2449 Context cxt = mView.getContext(); 2450 Log.i(TAG, "Drawing: package:" + cxt.getPackageName() + 2451 ", metrics=" + cxt.getResources().getDisplayMetrics() + 2452 ", compatibilityInfo=" + cxt.getResources().getCompatibilityInfo()); 2453 } 2454 try { 2455 canvas.translate(0, -yoff); 2456 if (mTranslator != null) { 2457 mTranslator.translateCanvas(canvas); 2458 } 2459 canvas.setScreenDensity(scalingRequired ? mNoncompatDensity : 0); 2460 attachInfo.mSetIgnoreDirtyState = false; 2461 2462 mView.draw(canvas); 2463 2464 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2465 } finally { 2466 if (!attachInfo.mSetIgnoreDirtyState) { 2467 // Only clear the flag if it was not set during the mView.draw() call 2468 attachInfo.mIgnoreDirtyState = false; 2469 } 2470 } 2471 } finally { 2472 try { 2473 surface.unlockCanvasAndPost(canvas); 2474 } catch (IllegalArgumentException e) { 2475 Log.e(TAG, "Could not unlock surface", e); 2476 mLayoutRequested = true; // ask wm for a new surface next time. 2477 //noinspection ReturnInsideFinallyBlock 2478 return false; 2479 } 2480 2481 if (LOCAL_LOGV) { 2482 Log.v(TAG, "Surface " + surface + " unlockCanvasAndPost"); 2483 } 2484 } 2485 return true; 2486 } 2487 2488 /** 2489 * We want to draw a highlight around the current accessibility focused. 2490 * Since adding a style for all possible view is not a viable option we 2491 * have this specialized drawing method. 2492 * 2493 * Note: We are doing this here to be able to draw the highlight for 2494 * virtual views in addition to real ones. 2495 * 2496 * @param canvas The canvas on which to draw. 2497 */ 2498 private void drawAccessibilityFocusedDrawableIfNeeded(Canvas canvas) { 2499 AccessibilityManager manager = AccessibilityManager.getInstance(mView.mContext); 2500 if (!manager.isEnabled() || !manager.isTouchExplorationEnabled()) { 2501 return; 2502 } 2503 if (mAccessibilityFocusedHost == null || mAccessibilityFocusedHost.mAttachInfo == null) { 2504 return; 2505 } 2506 Drawable drawable = getAccessibilityFocusedDrawable(); 2507 if (drawable == null) { 2508 return; 2509 } 2510 AccessibilityNodeProvider provider = 2511 mAccessibilityFocusedHost.getAccessibilityNodeProvider(); 2512 Rect bounds = mView.mAttachInfo.mTmpInvalRect; 2513 if (provider == null) { 2514 mAccessibilityFocusedHost.getBoundsOnScreen(bounds); 2515 } else { 2516 if (mAccessibilityFocusedVirtualView == null) { 2517 return; 2518 } 2519 mAccessibilityFocusedVirtualView.getBoundsInScreen(bounds); 2520 } 2521 bounds.offset(-mAttachInfo.mWindowLeft, -mAttachInfo.mWindowTop); 2522 bounds.intersect(0, 0, mAttachInfo.mViewRootImpl.mWidth, mAttachInfo.mViewRootImpl.mHeight); 2523 drawable.setBounds(bounds); 2524 drawable.draw(canvas); 2525 } 2526 2527 private Drawable getAccessibilityFocusedDrawable() { 2528 if (mAttachInfo != null) { 2529 // Lazily load the accessibility focus drawable. 2530 if (mAttachInfo.mAccessibilityFocusDrawable == null) { 2531 TypedValue value = new TypedValue(); 2532 final boolean resolved = mView.mContext.getTheme().resolveAttribute( 2533 R.attr.accessibilityFocusedDrawable, value, true); 2534 if (resolved) { 2535 mAttachInfo.mAccessibilityFocusDrawable = 2536 mView.mContext.getResources().getDrawable(value.resourceId); 2537 } 2538 } 2539 return mAttachInfo.mAccessibilityFocusDrawable; 2540 } 2541 return null; 2542 } 2543 2544 void invalidateDisplayLists() { 2545 final ArrayList<DisplayList> displayLists = mDisplayLists; 2546 final int count = displayLists.size(); 2547 2548 for (int i = 0; i < count; i++) { 2549 final DisplayList displayList = displayLists.get(i); 2550 if (displayList.isDirty()) { 2551 displayList.clear(); 2552 } 2553 } 2554 2555 displayLists.clear(); 2556 } 2557 2558 /** 2559 * @hide 2560 */ 2561 public void setDrawDuringWindowsAnimating(boolean value) { 2562 mDrawDuringWindowsAnimating = value; 2563 if (value) { 2564 handleDispatchDoneAnimating(); 2565 } 2566 } 2567 2568 boolean scrollToRectOrFocus(Rect rectangle, boolean immediate) { 2569 final View.AttachInfo attachInfo = mAttachInfo; 2570 final Rect ci = attachInfo.mContentInsets; 2571 final Rect vi = attachInfo.mVisibleInsets; 2572 int scrollY = 0; 2573 boolean handled = false; 2574 2575 if (vi.left > ci.left || vi.top > ci.top 2576 || vi.right > ci.right || vi.bottom > ci.bottom) { 2577 // We'll assume that we aren't going to change the scroll 2578 // offset, since we want to avoid that unless it is actually 2579 // going to make the focus visible... otherwise we scroll 2580 // all over the place. 2581 scrollY = mScrollY; 2582 // We can be called for two different situations: during a draw, 2583 // to update the scroll position if the focus has changed (in which 2584 // case 'rectangle' is null), or in response to a 2585 // requestChildRectangleOnScreen() call (in which case 'rectangle' 2586 // is non-null and we just want to scroll to whatever that 2587 // rectangle is). 2588 final View focus = mView.findFocus(); 2589 if (focus == null) { 2590 return false; 2591 } 2592 View lastScrolledFocus = (mLastScrolledFocus != null) ? mLastScrolledFocus.get() : null; 2593 if (focus != lastScrolledFocus) { 2594 // If the focus has changed, then ignore any requests to scroll 2595 // to a rectangle; first we want to make sure the entire focus 2596 // view is visible. 2597 rectangle = null; 2598 } 2599 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Eval scroll: focus=" + focus 2600 + " rectangle=" + rectangle + " ci=" + ci 2601 + " vi=" + vi); 2602 if (focus == lastScrolledFocus && !mScrollMayChange && rectangle == null) { 2603 // Optimization: if the focus hasn't changed since last 2604 // time, and no layout has happened, then just leave things 2605 // as they are. 2606 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Keeping scroll y=" 2607 + mScrollY + " vi=" + vi.toShortString()); 2608 } else { 2609 // We need to determine if the currently focused view is 2610 // within the visible part of the window and, if not, apply 2611 // a pan so it can be seen. 2612 mLastScrolledFocus = new WeakReference<View>(focus); 2613 mScrollMayChange = false; 2614 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Need to scroll?"); 2615 // Try to find the rectangle from the focus view. 2616 if (focus.getGlobalVisibleRect(mVisRect, null)) { 2617 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Root w=" 2618 + mView.getWidth() + " h=" + mView.getHeight() 2619 + " ci=" + ci.toShortString() 2620 + " vi=" + vi.toShortString()); 2621 if (rectangle == null) { 2622 focus.getFocusedRect(mTempRect); 2623 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Focus " + focus 2624 + ": focusRect=" + mTempRect.toShortString()); 2625 if (mView instanceof ViewGroup) { 2626 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 2627 focus, mTempRect); 2628 } 2629 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2630 "Focus in window: focusRect=" 2631 + mTempRect.toShortString() 2632 + " visRect=" + mVisRect.toShortString()); 2633 } else { 2634 mTempRect.set(rectangle); 2635 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2636 "Request scroll to rect: " 2637 + mTempRect.toShortString() 2638 + " visRect=" + mVisRect.toShortString()); 2639 } 2640 if (mTempRect.intersect(mVisRect)) { 2641 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2642 "Focus window visible rect: " 2643 + mTempRect.toShortString()); 2644 if (mTempRect.height() > 2645 (mView.getHeight()-vi.top-vi.bottom)) { 2646 // If the focus simply is not going to fit, then 2647 // best is probably just to leave things as-is. 2648 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2649 "Too tall; leaving scrollY=" + scrollY); 2650 } else if ((mTempRect.top-scrollY) < vi.top) { 2651 scrollY -= vi.top - (mTempRect.top-scrollY); 2652 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2653 "Top covered; scrollY=" + scrollY); 2654 } else if ((mTempRect.bottom-scrollY) 2655 > (mView.getHeight()-vi.bottom)) { 2656 scrollY += (mTempRect.bottom-scrollY) 2657 - (mView.getHeight()-vi.bottom); 2658 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2659 "Bottom covered; scrollY=" + scrollY); 2660 } 2661 handled = true; 2662 } 2663 } 2664 } 2665 } 2666 2667 if (scrollY != mScrollY) { 2668 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Pan scroll changed: old=" 2669 + mScrollY + " , new=" + scrollY); 2670 if (!immediate && mResizeBuffer == null) { 2671 if (mScroller == null) { 2672 mScroller = new Scroller(mView.getContext()); 2673 } 2674 mScroller.startScroll(0, mScrollY, 0, scrollY-mScrollY); 2675 } else if (mScroller != null) { 2676 mScroller.abortAnimation(); 2677 } 2678 mScrollY = scrollY; 2679 } 2680 2681 return handled; 2682 } 2683 2684 /** 2685 * @hide 2686 */ 2687 public View getAccessibilityFocusedHost() { 2688 return mAccessibilityFocusedHost; 2689 } 2690 2691 /** 2692 * @hide 2693 */ 2694 public AccessibilityNodeInfo getAccessibilityFocusedVirtualView() { 2695 return mAccessibilityFocusedVirtualView; 2696 } 2697 2698 void setAccessibilityFocus(View view, AccessibilityNodeInfo node) { 2699 // If we have a virtual view with accessibility focus we need 2700 // to clear the focus and invalidate the virtual view bounds. 2701 if (mAccessibilityFocusedVirtualView != null) { 2702 2703 AccessibilityNodeInfo focusNode = mAccessibilityFocusedVirtualView; 2704 View focusHost = mAccessibilityFocusedHost; 2705 2706 // Wipe the state of the current accessibility focus since 2707 // the call into the provider to clear accessibility focus 2708 // will fire an accessibility event which will end up calling 2709 // this method and we want to have clean state when this 2710 // invocation happens. 2711 mAccessibilityFocusedHost = null; 2712 mAccessibilityFocusedVirtualView = null; 2713 2714 // Clear accessibility focus on the host after clearing state since 2715 // this method may be reentrant. 2716 focusHost.clearAccessibilityFocusNoCallbacks(); 2717 2718 AccessibilityNodeProvider provider = focusHost.getAccessibilityNodeProvider(); 2719 if (provider != null) { 2720 // Invalidate the area of the cleared accessibility focus. 2721 focusNode.getBoundsInParent(mTempRect); 2722 focusHost.invalidate(mTempRect); 2723 // Clear accessibility focus in the virtual node. 2724 final int virtualNodeId = AccessibilityNodeInfo.getVirtualDescendantId( 2725 focusNode.getSourceNodeId()); 2726 provider.performAction(virtualNodeId, 2727 AccessibilityNodeInfo.ACTION_CLEAR_ACCESSIBILITY_FOCUS, null); 2728 } 2729 focusNode.recycle(); 2730 } 2731 if (mAccessibilityFocusedHost != null) { 2732 // Clear accessibility focus in the view. 2733 mAccessibilityFocusedHost.clearAccessibilityFocusNoCallbacks(); 2734 } 2735 2736 // Set the new focus host and node. 2737 mAccessibilityFocusedHost = view; 2738 mAccessibilityFocusedVirtualView = node; 2739 } 2740 2741 public void requestChildFocus(View child, View focused) { 2742 if (DEBUG_INPUT_RESIZE) { 2743 Log.v(TAG, "Request child focus: focus now " + focused); 2744 } 2745 checkThread(); 2746 scheduleTraversals(); 2747 } 2748 2749 public void clearChildFocus(View child) { 2750 if (DEBUG_INPUT_RESIZE) { 2751 Log.v(TAG, "Clearing child focus"); 2752 } 2753 checkThread(); 2754 scheduleTraversals(); 2755 } 2756 2757 @Override 2758 public ViewParent getParentForAccessibility() { 2759 return null; 2760 } 2761 2762 public void focusableViewAvailable(View v) { 2763 checkThread(); 2764 if (mView != null) { 2765 if (!mView.hasFocus()) { 2766 v.requestFocus(); 2767 } else { 2768 // the one case where will transfer focus away from the current one 2769 // is if the current view is a view group that prefers to give focus 2770 // to its children first AND the view is a descendant of it. 2771 View focused = mView.findFocus(); 2772 if (focused instanceof ViewGroup) { 2773 ViewGroup group = (ViewGroup) focused; 2774 if (group.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 2775 && isViewDescendantOf(v, focused)) { 2776 v.requestFocus(); 2777 } 2778 } 2779 } 2780 } 2781 } 2782 2783 public void recomputeViewAttributes(View child) { 2784 checkThread(); 2785 if (mView == child) { 2786 mAttachInfo.mRecomputeGlobalAttributes = true; 2787 if (!mWillDrawSoon) { 2788 scheduleTraversals(); 2789 } 2790 } 2791 } 2792 2793 void dispatchDetachedFromWindow() { 2794 if (mView != null && mView.mAttachInfo != null) { 2795 if (mAttachInfo.mHardwareRenderer != null && 2796 mAttachInfo.mHardwareRenderer.isEnabled()) { 2797 mAttachInfo.mHardwareRenderer.validate(); 2798 } 2799 mAttachInfo.mTreeObserver.dispatchOnWindowAttachedChange(false); 2800 mView.dispatchDetachedFromWindow(); 2801 } 2802 2803 mAccessibilityInteractionConnectionManager.ensureNoConnection(); 2804 mAccessibilityManager.removeAccessibilityStateChangeListener( 2805 mAccessibilityInteractionConnectionManager); 2806 removeSendWindowContentChangedCallback(); 2807 2808 destroyHardwareRenderer(); 2809 2810 setAccessibilityFocus(null, null); 2811 2812 mView.assignParent(null); 2813 mView = null; 2814 mAttachInfo.mRootView = null; 2815 mAttachInfo.mSurface = null; 2816 2817 mSurface.release(); 2818 2819 if (mInputQueueCallback != null && mInputQueue != null) { 2820 mInputQueueCallback.onInputQueueDestroyed(mInputQueue); 2821 mInputQueue.dispose(); 2822 mInputQueueCallback = null; 2823 mInputQueue = null; 2824 } 2825 if (mInputEventReceiver != null) { 2826 mInputEventReceiver.dispose(); 2827 mInputEventReceiver = null; 2828 } 2829 try { 2830 mWindowSession.remove(mWindow); 2831 } catch (RemoteException e) { 2832 } 2833 2834 // Dispose the input channel after removing the window so the Window Manager 2835 // doesn't interpret the input channel being closed as an abnormal termination. 2836 if (mInputChannel != null) { 2837 mInputChannel.dispose(); 2838 mInputChannel = null; 2839 } 2840 2841 unscheduleTraversals(); 2842 } 2843 2844 void updateConfiguration(Configuration config, boolean force) { 2845 if (DEBUG_CONFIGURATION) Log.v(TAG, 2846 "Applying new config to window " 2847 + mWindowAttributes.getTitle() 2848 + ": " + config); 2849 2850 CompatibilityInfo ci = mDisplayAdjustments.getCompatibilityInfo(); 2851 if (!ci.equals(CompatibilityInfo.DEFAULT_COMPATIBILITY_INFO)) { 2852 config = new Configuration(config); 2853 ci.applyToConfiguration(mNoncompatDensity, config); 2854 } 2855 2856 synchronized (sConfigCallbacks) { 2857 for (int i=sConfigCallbacks.size()-1; i>=0; i--) { 2858 sConfigCallbacks.get(i).onConfigurationChanged(config); 2859 } 2860 } 2861 if (mView != null) { 2862 // At this point the resources have been updated to 2863 // have the most recent config, whatever that is. Use 2864 // the one in them which may be newer. 2865 config = mView.getResources().getConfiguration(); 2866 if (force || mLastConfiguration.diff(config) != 0) { 2867 final int lastLayoutDirection = mLastConfiguration.getLayoutDirection(); 2868 final int currentLayoutDirection = config.getLayoutDirection(); 2869 mLastConfiguration.setTo(config); 2870 if (lastLayoutDirection != currentLayoutDirection && 2871 mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 2872 mView.setLayoutDirection(currentLayoutDirection); 2873 } 2874 mView.dispatchConfigurationChanged(config); 2875 } 2876 } 2877 } 2878 2879 /** 2880 * Return true if child is an ancestor of parent, (or equal to the parent). 2881 */ 2882 public static boolean isViewDescendantOf(View child, View parent) { 2883 if (child == parent) { 2884 return true; 2885 } 2886 2887 final ViewParent theParent = child.getParent(); 2888 return (theParent instanceof ViewGroup) && isViewDescendantOf((View) theParent, parent); 2889 } 2890 2891 private static void forceLayout(View view) { 2892 view.forceLayout(); 2893 if (view instanceof ViewGroup) { 2894 ViewGroup group = (ViewGroup) view; 2895 final int count = group.getChildCount(); 2896 for (int i = 0; i < count; i++) { 2897 forceLayout(group.getChildAt(i)); 2898 } 2899 } 2900 } 2901 2902 private final static int MSG_INVALIDATE = 1; 2903 private final static int MSG_INVALIDATE_RECT = 2; 2904 private final static int MSG_DIE = 3; 2905 private final static int MSG_RESIZED = 4; 2906 private final static int MSG_RESIZED_REPORT = 5; 2907 private final static int MSG_WINDOW_FOCUS_CHANGED = 6; 2908 private final static int MSG_DISPATCH_KEY = 7; 2909 private final static int MSG_DISPATCH_APP_VISIBILITY = 8; 2910 private final static int MSG_DISPATCH_GET_NEW_SURFACE = 9; 2911 private final static int MSG_DISPATCH_KEY_FROM_IME = 11; 2912 private final static int MSG_FINISH_INPUT_CONNECTION = 12; 2913 private final static int MSG_CHECK_FOCUS = 13; 2914 private final static int MSG_CLOSE_SYSTEM_DIALOGS = 14; 2915 private final static int MSG_DISPATCH_DRAG_EVENT = 15; 2916 private final static int MSG_DISPATCH_DRAG_LOCATION_EVENT = 16; 2917 private final static int MSG_DISPATCH_SYSTEM_UI_VISIBILITY = 17; 2918 private final static int MSG_UPDATE_CONFIGURATION = 18; 2919 private final static int MSG_PROCESS_INPUT_EVENTS = 19; 2920 private final static int MSG_DISPATCH_SCREEN_STATE = 20; 2921 private final static int MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST = 21; 2922 private final static int MSG_DISPATCH_DONE_ANIMATING = 22; 2923 private final static int MSG_INVALIDATE_WORLD = 23; 2924 private final static int MSG_WINDOW_MOVED = 24; 2925 private final static int MSG_FLUSH_LAYER_UPDATES = 25; 2926 2927 final class ViewRootHandler extends Handler { 2928 @Override 2929 public String getMessageName(Message message) { 2930 switch (message.what) { 2931 case MSG_INVALIDATE: 2932 return "MSG_INVALIDATE"; 2933 case MSG_INVALIDATE_RECT: 2934 return "MSG_INVALIDATE_RECT"; 2935 case MSG_DIE: 2936 return "MSG_DIE"; 2937 case MSG_RESIZED: 2938 return "MSG_RESIZED"; 2939 case MSG_RESIZED_REPORT: 2940 return "MSG_RESIZED_REPORT"; 2941 case MSG_WINDOW_FOCUS_CHANGED: 2942 return "MSG_WINDOW_FOCUS_CHANGED"; 2943 case MSG_DISPATCH_KEY: 2944 return "MSG_DISPATCH_KEY"; 2945 case MSG_DISPATCH_APP_VISIBILITY: 2946 return "MSG_DISPATCH_APP_VISIBILITY"; 2947 case MSG_DISPATCH_GET_NEW_SURFACE: 2948 return "MSG_DISPATCH_GET_NEW_SURFACE"; 2949 case MSG_DISPATCH_KEY_FROM_IME: 2950 return "MSG_DISPATCH_KEY_FROM_IME"; 2951 case MSG_FINISH_INPUT_CONNECTION: 2952 return "MSG_FINISH_INPUT_CONNECTION"; 2953 case MSG_CHECK_FOCUS: 2954 return "MSG_CHECK_FOCUS"; 2955 case MSG_CLOSE_SYSTEM_DIALOGS: 2956 return "MSG_CLOSE_SYSTEM_DIALOGS"; 2957 case MSG_DISPATCH_DRAG_EVENT: 2958 return "MSG_DISPATCH_DRAG_EVENT"; 2959 case MSG_DISPATCH_DRAG_LOCATION_EVENT: 2960 return "MSG_DISPATCH_DRAG_LOCATION_EVENT"; 2961 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: 2962 return "MSG_DISPATCH_SYSTEM_UI_VISIBILITY"; 2963 case MSG_UPDATE_CONFIGURATION: 2964 return "MSG_UPDATE_CONFIGURATION"; 2965 case MSG_PROCESS_INPUT_EVENTS: 2966 return "MSG_PROCESS_INPUT_EVENTS"; 2967 case MSG_DISPATCH_SCREEN_STATE: 2968 return "MSG_DISPATCH_SCREEN_STATE"; 2969 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: 2970 return "MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST"; 2971 case MSG_DISPATCH_DONE_ANIMATING: 2972 return "MSG_DISPATCH_DONE_ANIMATING"; 2973 case MSG_WINDOW_MOVED: 2974 return "MSG_WINDOW_MOVED"; 2975 case MSG_FLUSH_LAYER_UPDATES: 2976 return "MSG_FLUSH_LAYER_UPDATES"; 2977 } 2978 return super.getMessageName(message); 2979 } 2980 2981 @Override 2982 public void handleMessage(Message msg) { 2983 switch (msg.what) { 2984 case MSG_INVALIDATE: 2985 ((View) msg.obj).invalidate(); 2986 break; 2987 case MSG_INVALIDATE_RECT: 2988 final View.AttachInfo.InvalidateInfo info = (View.AttachInfo.InvalidateInfo) msg.obj; 2989 info.target.invalidate(info.left, info.top, info.right, info.bottom); 2990 info.recycle(); 2991 break; 2992 case MSG_PROCESS_INPUT_EVENTS: 2993 mProcessInputEventsScheduled = false; 2994 doProcessInputEvents(); 2995 break; 2996 case MSG_DISPATCH_APP_VISIBILITY: 2997 handleAppVisibility(msg.arg1 != 0); 2998 break; 2999 case MSG_DISPATCH_GET_NEW_SURFACE: 3000 handleGetNewSurface(); 3001 break; 3002 case MSG_RESIZED: { 3003 // Recycled in the fall through... 3004 SomeArgs args = (SomeArgs) msg.obj; 3005 if (mWinFrame.equals(args.arg1) 3006 && mPendingOverscanInsets.equals(args.arg5) 3007 && mPendingContentInsets.equals(args.arg2) 3008 && mPendingVisibleInsets.equals(args.arg3) 3009 && args.arg4 == null) { 3010 break; 3011 } 3012 } // fall through... 3013 case MSG_RESIZED_REPORT: 3014 if (mAdded) { 3015 SomeArgs args = (SomeArgs) msg.obj; 3016 3017 Configuration config = (Configuration) args.arg4; 3018 if (config != null) { 3019 updateConfiguration(config, false); 3020 } 3021 3022 mWinFrame.set((Rect) args.arg1); 3023 mPendingOverscanInsets.set((Rect) args.arg5); 3024 mPendingContentInsets.set((Rect) args.arg2); 3025 mPendingVisibleInsets.set((Rect) args.arg3); 3026 3027 args.recycle(); 3028 3029 if (msg.what == MSG_RESIZED_REPORT) { 3030 mReportNextDraw = true; 3031 } 3032 3033 if (mView != null) { 3034 forceLayout(mView); 3035 } 3036 3037 requestLayout(); 3038 } 3039 break; 3040 case MSG_WINDOW_MOVED: 3041 if (mAdded) { 3042 final int w = mWinFrame.width(); 3043 final int h = mWinFrame.height(); 3044 final int l = msg.arg1; 3045 final int t = msg.arg2; 3046 mWinFrame.left = l; 3047 mWinFrame.right = l + w; 3048 mWinFrame.top = t; 3049 mWinFrame.bottom = t + h; 3050 3051 if (mView != null) { 3052 forceLayout(mView); 3053 } 3054 requestLayout(); 3055 } 3056 break; 3057 case MSG_WINDOW_FOCUS_CHANGED: { 3058 if (mAdded) { 3059 boolean hasWindowFocus = msg.arg1 != 0; 3060 mAttachInfo.mHasWindowFocus = hasWindowFocus; 3061 3062 profileRendering(hasWindowFocus); 3063 3064 if (hasWindowFocus) { 3065 boolean inTouchMode = msg.arg2 != 0; 3066 ensureTouchModeLocally(inTouchMode); 3067 3068 if (mAttachInfo.mHardwareRenderer != null && mSurface.isValid()){ 3069 mFullRedrawNeeded = true; 3070 try { 3071 mAttachInfo.mHardwareRenderer.initializeIfNeeded( 3072 mWidth, mHeight, mHolder.getSurface()); 3073 } catch (Surface.OutOfResourcesException e) { 3074 Log.e(TAG, "OutOfResourcesException locking surface", e); 3075 try { 3076 if (!mWindowSession.outOfMemory(mWindow)) { 3077 Slog.w(TAG, "No processes killed for memory; killing self"); 3078 Process.killProcess(Process.myPid()); 3079 } 3080 } catch (RemoteException ex) { 3081 } 3082 // Retry in a bit. 3083 sendMessageDelayed(obtainMessage(msg.what, msg.arg1, msg.arg2), 500); 3084 return; 3085 } 3086 } 3087 } 3088 3089 mLastWasImTarget = WindowManager.LayoutParams 3090 .mayUseInputMethod(mWindowAttributes.flags); 3091 3092 InputMethodManager imm = InputMethodManager.peekInstance(); 3093 if (mView != null) { 3094 if (hasWindowFocus && imm != null && mLastWasImTarget) { 3095 imm.startGettingWindowFocus(mView); 3096 } 3097 mAttachInfo.mKeyDispatchState.reset(); 3098 mView.dispatchWindowFocusChanged(hasWindowFocus); 3099 mAttachInfo.mTreeObserver.dispatchOnWindowFocusChange(hasWindowFocus); 3100 } 3101 3102 // Note: must be done after the focus change callbacks, 3103 // so all of the view state is set up correctly. 3104 if (hasWindowFocus) { 3105 if (imm != null && mLastWasImTarget) { 3106 imm.onWindowFocus(mView, mView.findFocus(), 3107 mWindowAttributes.softInputMode, 3108 !mHasHadWindowFocus, mWindowAttributes.flags); 3109 } 3110 // Clear the forward bit. We can just do this directly, since 3111 // the window manager doesn't care about it. 3112 mWindowAttributes.softInputMode &= 3113 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3114 ((WindowManager.LayoutParams)mView.getLayoutParams()) 3115 .softInputMode &= 3116 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3117 mHasHadWindowFocus = true; 3118 } 3119 3120 setAccessibilityFocus(null, null); 3121 3122 if (mView != null && mAccessibilityManager.isEnabled()) { 3123 if (hasWindowFocus) { 3124 mView.sendAccessibilityEvent( 3125 AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 3126 } 3127 } 3128 } 3129 } break; 3130 case MSG_DIE: 3131 doDie(); 3132 break; 3133 case MSG_DISPATCH_KEY: { 3134 KeyEvent event = (KeyEvent)msg.obj; 3135 enqueueInputEvent(event, null, 0, true); 3136 } break; 3137 case MSG_DISPATCH_KEY_FROM_IME: { 3138 if (LOCAL_LOGV) Log.v( 3139 TAG, "Dispatching key " 3140 + msg.obj + " from IME to " + mView); 3141 KeyEvent event = (KeyEvent)msg.obj; 3142 if ((event.getFlags()&KeyEvent.FLAG_FROM_SYSTEM) != 0) { 3143 // The IME is trying to say this event is from the 3144 // system! Bad bad bad! 3145 //noinspection UnusedAssignment 3146 event = KeyEvent.changeFlags(event, event.getFlags() & ~KeyEvent.FLAG_FROM_SYSTEM); 3147 } 3148 enqueueInputEvent(event, null, QueuedInputEvent.FLAG_DELIVER_POST_IME, true); 3149 } break; 3150 case MSG_FINISH_INPUT_CONNECTION: { 3151 InputMethodManager imm = InputMethodManager.peekInstance(); 3152 if (imm != null) { 3153 imm.reportFinishInputConnection((InputConnection)msg.obj); 3154 } 3155 } break; 3156 case MSG_CHECK_FOCUS: { 3157 InputMethodManager imm = InputMethodManager.peekInstance(); 3158 if (imm != null) { 3159 imm.checkFocus(); 3160 } 3161 } break; 3162 case MSG_CLOSE_SYSTEM_DIALOGS: { 3163 if (mView != null) { 3164 mView.onCloseSystemDialogs((String)msg.obj); 3165 } 3166 } break; 3167 case MSG_DISPATCH_DRAG_EVENT: 3168 case MSG_DISPATCH_DRAG_LOCATION_EVENT: { 3169 DragEvent event = (DragEvent)msg.obj; 3170 event.mLocalState = mLocalDragState; // only present when this app called startDrag() 3171 handleDragEvent(event); 3172 } break; 3173 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: { 3174 handleDispatchSystemUiVisibilityChanged((SystemUiVisibilityInfo) msg.obj); 3175 } break; 3176 case MSG_UPDATE_CONFIGURATION: { 3177 Configuration config = (Configuration)msg.obj; 3178 if (config.isOtherSeqNewer(mLastConfiguration)) { 3179 config = mLastConfiguration; 3180 } 3181 updateConfiguration(config, false); 3182 } break; 3183 case MSG_DISPATCH_SCREEN_STATE: { 3184 if (mView != null) { 3185 handleScreenStateChange(msg.arg1 == 1); 3186 } 3187 } break; 3188 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: { 3189 setAccessibilityFocus(null, null); 3190 } break; 3191 case MSG_DISPATCH_DONE_ANIMATING: { 3192 handleDispatchDoneAnimating(); 3193 } break; 3194 case MSG_INVALIDATE_WORLD: { 3195 if (mView != null) { 3196 invalidateWorld(mView); 3197 } 3198 } break; 3199 case MSG_FLUSH_LAYER_UPDATES: { 3200 flushHardwareLayerUpdates(); 3201 } break; 3202 } 3203 } 3204 } 3205 3206 final ViewRootHandler mHandler = new ViewRootHandler(); 3207 3208 /** 3209 * Something in the current window tells us we need to change the touch mode. For 3210 * example, we are not in touch mode, and the user touches the screen. 3211 * 3212 * If the touch mode has changed, tell the window manager, and handle it locally. 3213 * 3214 * @param inTouchMode Whether we want to be in touch mode. 3215 * @return True if the touch mode changed and focus changed was changed as a result 3216 */ 3217 boolean ensureTouchMode(boolean inTouchMode) { 3218 if (DBG) Log.d("touchmode", "ensureTouchMode(" + inTouchMode + "), current " 3219 + "touch mode is " + mAttachInfo.mInTouchMode); 3220 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3221 3222 // tell the window manager 3223 try { 3224 mWindowSession.setInTouchMode(inTouchMode); 3225 } catch (RemoteException e) { 3226 throw new RuntimeException(e); 3227 } 3228 3229 // handle the change 3230 return ensureTouchModeLocally(inTouchMode); 3231 } 3232 3233 /** 3234 * Ensure that the touch mode for this window is set, and if it is changing, 3235 * take the appropriate action. 3236 * @param inTouchMode Whether we want to be in touch mode. 3237 * @return True if the touch mode changed and focus changed was changed as a result 3238 */ 3239 private boolean ensureTouchModeLocally(boolean inTouchMode) { 3240 if (DBG) Log.d("touchmode", "ensureTouchModeLocally(" + inTouchMode + "), current " 3241 + "touch mode is " + mAttachInfo.mInTouchMode); 3242 3243 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3244 3245 mAttachInfo.mInTouchMode = inTouchMode; 3246 mAttachInfo.mTreeObserver.dispatchOnTouchModeChanged(inTouchMode); 3247 3248 return (inTouchMode) ? enterTouchMode() : leaveTouchMode(); 3249 } 3250 3251 private boolean enterTouchMode() { 3252 if (mView != null) { 3253 if (mView.hasFocus()) { 3254 // note: not relying on mFocusedView here because this could 3255 // be when the window is first being added, and mFocused isn't 3256 // set yet. 3257 final View focused = mView.findFocus(); 3258 if (focused != null && !focused.isFocusableInTouchMode()) { 3259 final ViewGroup ancestorToTakeFocus = 3260 findAncestorToTakeFocusInTouchMode(focused); 3261 if (ancestorToTakeFocus != null) { 3262 // there is an ancestor that wants focus after its descendants that 3263 // is focusable in touch mode.. give it focus 3264 return ancestorToTakeFocus.requestFocus(); 3265 } else { 3266 // nothing appropriate to have focus in touch mode, clear it out 3267 focused.unFocus(); 3268 return true; 3269 } 3270 } 3271 } 3272 } 3273 return false; 3274 } 3275 3276 /** 3277 * Find an ancestor of focused that wants focus after its descendants and is 3278 * focusable in touch mode. 3279 * @param focused The currently focused view. 3280 * @return An appropriate view, or null if no such view exists. 3281 */ 3282 private static ViewGroup findAncestorToTakeFocusInTouchMode(View focused) { 3283 ViewParent parent = focused.getParent(); 3284 while (parent instanceof ViewGroup) { 3285 final ViewGroup vgParent = (ViewGroup) parent; 3286 if (vgParent.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 3287 && vgParent.isFocusableInTouchMode()) { 3288 return vgParent; 3289 } 3290 if (vgParent.isRootNamespace()) { 3291 return null; 3292 } else { 3293 parent = vgParent.getParent(); 3294 } 3295 } 3296 return null; 3297 } 3298 3299 private boolean leaveTouchMode() { 3300 if (mView != null) { 3301 if (mView.hasFocus()) { 3302 View focusedView = mView.findFocus(); 3303 if (!(focusedView instanceof ViewGroup)) { 3304 // some view has focus, let it keep it 3305 return false; 3306 } else if (((ViewGroup) focusedView).getDescendantFocusability() != 3307 ViewGroup.FOCUS_AFTER_DESCENDANTS) { 3308 // some view group has focus, and doesn't prefer its children 3309 // over itself for focus, so let them keep it. 3310 return false; 3311 } 3312 } 3313 3314 // find the best view to give focus to in this brave new non-touch-mode 3315 // world 3316 final View focused = focusSearch(null, View.FOCUS_DOWN); 3317 if (focused != null) { 3318 return focused.requestFocus(View.FOCUS_DOWN); 3319 } 3320 } 3321 return false; 3322 } 3323 3324 /** 3325 * Base class for implementing a stage in the chain of responsibility 3326 * for processing input events. 3327 * <p> 3328 * Events are delivered to the stage by the {@link #deliver} method. The stage 3329 * then has the choice of finishing the event or forwarding it to the next stage. 3330 * </p> 3331 */ 3332 abstract class InputStage { 3333 private final InputStage mNext; 3334 3335 protected static final int FORWARD = 0; 3336 protected static final int FINISH_HANDLED = 1; 3337 protected static final int FINISH_NOT_HANDLED = 2; 3338 3339 /** 3340 * Creates an input stage. 3341 * @param next The next stage to which events should be forwarded. 3342 */ 3343 public InputStage(InputStage next) { 3344 mNext = next; 3345 } 3346 3347 /** 3348 * Delivers an event to be processed. 3349 */ 3350 public final void deliver(QueuedInputEvent q) { 3351 if ((q.mFlags & QueuedInputEvent.FLAG_FINISHED) != 0) { 3352 forward(q); 3353 } else if (mView == null || !mAdded) { 3354 Slog.w(TAG, "Dropping event due to root view being removed: " + q.mEvent); 3355 finish(q, false); 3356 } else if (!mAttachInfo.mHasWindowFocus && 3357 !q.mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER) && 3358 !isTerminalInputEvent(q.mEvent)) { 3359 // If this is a focused event and the window doesn't currently have input focus, 3360 // then drop this event. This could be an event that came back from the previous 3361 // stage but the window has lost focus in the meantime. 3362 Slog.w(TAG, "Dropping event due to no window focus: " + q.mEvent); 3363 finish(q, false); 3364 } else { 3365 apply(q, onProcess(q)); 3366 } 3367 } 3368 3369 /** 3370 * Marks the the input event as finished then forwards it to the next stage. 3371 */ 3372 protected void finish(QueuedInputEvent q, boolean handled) { 3373 q.mFlags |= QueuedInputEvent.FLAG_FINISHED; 3374 if (handled) { 3375 q.mFlags |= QueuedInputEvent.FLAG_FINISHED_HANDLED; 3376 } 3377 forward(q); 3378 } 3379 3380 /** 3381 * Forwards the event to the next stage. 3382 */ 3383 protected void forward(QueuedInputEvent q) { 3384 onDeliverToNext(q); 3385 } 3386 3387 /** 3388 * Applies a result code from {@link #onProcess} to the specified event. 3389 */ 3390 protected void apply(QueuedInputEvent q, int result) { 3391 if (result == FORWARD) { 3392 forward(q); 3393 } else if (result == FINISH_HANDLED) { 3394 finish(q, true); 3395 } else if (result == FINISH_NOT_HANDLED) { 3396 finish(q, false); 3397 } else { 3398 throw new IllegalArgumentException("Invalid result: " + result); 3399 } 3400 } 3401 3402 /** 3403 * Called when an event is ready to be processed. 3404 * @return A result code indicating how the event was handled. 3405 */ 3406 protected int onProcess(QueuedInputEvent q) { 3407 return FORWARD; 3408 } 3409 3410 /** 3411 * Called when an event is being delivered to the next stage. 3412 */ 3413 protected void onDeliverToNext(QueuedInputEvent q) { 3414 if (mNext != null) { 3415 mNext.deliver(q); 3416 } else { 3417 finishInputEvent(q); 3418 } 3419 } 3420 } 3421 3422 /** 3423 * Base class for implementing an input pipeline stage that supports 3424 * asynchronous and out-of-order processing of input events. 3425 * <p> 3426 * In addition to what a normal input stage can do, an asynchronous 3427 * input stage may also defer an input event that has been delivered to it 3428 * and finish or forward it later. 3429 * </p> 3430 */ 3431 abstract class AsyncInputStage extends InputStage { 3432 private final String mTraceCounter; 3433 3434 private QueuedInputEvent mQueueHead; 3435 private QueuedInputEvent mQueueTail; 3436 private int mQueueLength; 3437 3438 protected static final int DEFER = 3; 3439 3440 /** 3441 * Creates an asynchronous input stage. 3442 * @param next The next stage to which events should be forwarded. 3443 * @param traceCounter The name of a counter to record the size of 3444 * the queue of pending events. 3445 */ 3446 public AsyncInputStage(InputStage next, String traceCounter) { 3447 super(next); 3448 mTraceCounter = traceCounter; 3449 } 3450 3451 /** 3452 * Marks the event as deferred, which is to say that it will be handled 3453 * asynchronously. The caller is responsible for calling {@link #forward} 3454 * or {@link #finish} later when it is done handling the event. 3455 */ 3456 protected void defer(QueuedInputEvent q) { 3457 q.mFlags |= QueuedInputEvent.FLAG_DEFERRED; 3458 enqueue(q); 3459 } 3460 3461 @Override 3462 protected void forward(QueuedInputEvent q) { 3463 // Clear the deferred flag. 3464 q.mFlags &= ~QueuedInputEvent.FLAG_DEFERRED; 3465 3466 // Fast path if the queue is empty. 3467 QueuedInputEvent curr = mQueueHead; 3468 if (curr == null) { 3469 super.forward(q); 3470 return; 3471 } 3472 3473 // Determine whether the event must be serialized behind any others 3474 // before it can be delivered to the next stage. This is done because 3475 // deferred events might be handled out of order by the stage. 3476 final int deviceId = q.mEvent.getDeviceId(); 3477 QueuedInputEvent prev = null; 3478 boolean blocked = false; 3479 while (curr != null && curr != q) { 3480 if (!blocked && deviceId == curr.mEvent.getDeviceId()) { 3481 blocked = true; 3482 } 3483 prev = curr; 3484 curr = curr.mNext; 3485 } 3486 3487 // If the event is blocked, then leave it in the queue to be delivered later. 3488 // Note that the event might not yet be in the queue if it was not previously 3489 // deferred so we will enqueue it if needed. 3490 if (blocked) { 3491 if (curr == null) { 3492 enqueue(q); 3493 } 3494 return; 3495 } 3496 3497 // The event is not blocked. Deliver it immediately. 3498 if (curr != null) { 3499 curr = curr.mNext; 3500 dequeue(q, prev); 3501 } 3502 super.forward(q); 3503 3504 // Dequeuing this event may have unblocked successors. Deliver them. 3505 while (curr != null) { 3506 if (deviceId == curr.mEvent.getDeviceId()) { 3507 if ((curr.mFlags & QueuedInputEvent.FLAG_DEFERRED) != 0) { 3508 break; 3509 } 3510 QueuedInputEvent next = curr.mNext; 3511 dequeue(curr, prev); 3512 super.forward(curr); 3513 curr = next; 3514 } else { 3515 prev = curr; 3516 curr = curr.mNext; 3517 } 3518 } 3519 } 3520 3521 @Override 3522 protected void apply(QueuedInputEvent q, int result) { 3523 if (result == DEFER) { 3524 defer(q); 3525 } else { 3526 super.apply(q, result); 3527 } 3528 } 3529 3530 private void enqueue(QueuedInputEvent q) { 3531 if (mQueueTail == null) { 3532 mQueueHead = q; 3533 mQueueTail = q; 3534 } else { 3535 mQueueTail.mNext = q; 3536 mQueueTail = q; 3537 } 3538 3539 mQueueLength += 1; 3540 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 3541 } 3542 3543 private void dequeue(QueuedInputEvent q, QueuedInputEvent prev) { 3544 if (prev == null) { 3545 mQueueHead = q.mNext; 3546 } else { 3547 prev.mNext = q.mNext; 3548 } 3549 if (mQueueTail == q) { 3550 mQueueTail = prev; 3551 } 3552 q.mNext = null; 3553 3554 mQueueLength -= 1; 3555 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 3556 } 3557 } 3558 3559 /** 3560 * Delivers pre-ime input events to a native activity. 3561 * Does not support pointer events. 3562 */ 3563 final class NativePreImeInputStage extends AsyncInputStage 3564 implements InputQueue.FinishedInputEventCallback { 3565 public NativePreImeInputStage(InputStage next, String traceCounter) { 3566 super(next, traceCounter); 3567 } 3568 3569 @Override 3570 protected int onProcess(QueuedInputEvent q) { 3571 if (mInputQueue != null && q.mEvent instanceof KeyEvent) { 3572 mInputQueue.sendInputEvent(q.mEvent, q, true, this); 3573 return DEFER; 3574 } 3575 return FORWARD; 3576 } 3577 3578 @Override 3579 public void onFinishedInputEvent(Object token, boolean handled) { 3580 QueuedInputEvent q = (QueuedInputEvent)token; 3581 if (handled) { 3582 finish(q, true); 3583 return; 3584 } 3585 forward(q); 3586 } 3587 } 3588 3589 /** 3590 * Delivers pre-ime input events to the view hierarchy. 3591 * Does not support pointer events. 3592 */ 3593 final class ViewPreImeInputStage extends InputStage { 3594 public ViewPreImeInputStage(InputStage next) { 3595 super(next); 3596 } 3597 3598 @Override 3599 protected int onProcess(QueuedInputEvent q) { 3600 if (q.mEvent instanceof KeyEvent) { 3601 return processKeyEvent(q); 3602 } 3603 return FORWARD; 3604 } 3605 3606 private int processKeyEvent(QueuedInputEvent q) { 3607 final KeyEvent event = (KeyEvent)q.mEvent; 3608 if (mView.dispatchKeyEventPreIme(event)) { 3609 return FINISH_HANDLED; 3610 } 3611 return FORWARD; 3612 } 3613 } 3614 3615 /** 3616 * Delivers input events to the ime. 3617 * Does not support pointer events. 3618 */ 3619 final class ImeInputStage extends AsyncInputStage 3620 implements InputMethodManager.FinishedInputEventCallback { 3621 public ImeInputStage(InputStage next, String traceCounter) { 3622 super(next, traceCounter); 3623 } 3624 3625 @Override 3626 protected int onProcess(QueuedInputEvent q) { 3627 if (mLastWasImTarget) { 3628 InputMethodManager imm = InputMethodManager.peekInstance(); 3629 if (imm != null) { 3630 final InputEvent event = q.mEvent; 3631 if (DEBUG_IMF) Log.v(TAG, "Sending input event to IME: " + event); 3632 int result = imm.dispatchInputEvent(event, q, this, mHandler); 3633 if (result == InputMethodManager.DISPATCH_HANDLED) { 3634 return FINISH_HANDLED; 3635 } else if (result == InputMethodManager.DISPATCH_NOT_HANDLED) { 3636 return FINISH_NOT_HANDLED; 3637 } else { 3638 return DEFER; // callback will be invoked later 3639 } 3640 } 3641 } 3642 return FORWARD; 3643 } 3644 3645 @Override 3646 public void onFinishedInputEvent(Object token, boolean handled) { 3647 QueuedInputEvent q = (QueuedInputEvent)token; 3648 if (handled) { 3649 finish(q, true); 3650 return; 3651 } 3652 forward(q); 3653 } 3654 } 3655 3656 /** 3657 * Performs early processing of post-ime input events. 3658 */ 3659 final class EarlyPostImeInputStage extends InputStage { 3660 public EarlyPostImeInputStage(InputStage next) { 3661 super(next); 3662 } 3663 3664 @Override 3665 protected int onProcess(QueuedInputEvent q) { 3666 if (q.mEvent instanceof KeyEvent) { 3667 return processKeyEvent(q); 3668 } else { 3669 final int source = q.mEvent.getSource(); 3670 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 3671 return processPointerEvent(q); 3672 } 3673 } 3674 return FORWARD; 3675 } 3676 3677 private int processKeyEvent(QueuedInputEvent q) { 3678 final KeyEvent event = (KeyEvent)q.mEvent; 3679 3680 // If the key's purpose is to exit touch mode then we consume it 3681 // and consider it handled. 3682 if (checkForLeavingTouchModeAndConsume(event)) { 3683 return FINISH_HANDLED; 3684 } 3685 3686 // Make sure the fallback event policy sees all keys that will be 3687 // delivered to the view hierarchy. 3688 mFallbackEventHandler.preDispatchKeyEvent(event); 3689 return FORWARD; 3690 } 3691 3692 private int processPointerEvent(QueuedInputEvent q) { 3693 final MotionEvent event = (MotionEvent)q.mEvent; 3694 3695 // Translate the pointer event for compatibility, if needed. 3696 if (mTranslator != null) { 3697 mTranslator.translateEventInScreenToAppWindow(event); 3698 } 3699 3700 // Enter touch mode on down or scroll. 3701 final int action = event.getAction(); 3702 if (action == MotionEvent.ACTION_DOWN || action == MotionEvent.ACTION_SCROLL) { 3703 ensureTouchMode(true); 3704 } 3705 3706 // Offset the scroll position. 3707 if (mCurScrollY != 0) { 3708 event.offsetLocation(0, mCurScrollY); 3709 } 3710 3711 // Remember the touch position for possible drag-initiation. 3712 if (event.isTouchEvent()) { 3713 mLastTouchPoint.x = event.getRawX(); 3714 mLastTouchPoint.y = event.getRawY(); 3715 } 3716 return FORWARD; 3717 } 3718 } 3719 3720 /** 3721 * Delivers post-ime input events to a native activity. 3722 */ 3723 final class NativePostImeInputStage extends AsyncInputStage 3724 implements InputQueue.FinishedInputEventCallback { 3725 public NativePostImeInputStage(InputStage next, String traceCounter) { 3726 super(next, traceCounter); 3727 } 3728 3729 @Override 3730 protected int onProcess(QueuedInputEvent q) { 3731 if (mInputQueue != null) { 3732 mInputQueue.sendInputEvent(q.mEvent, q, false, this); 3733 return DEFER; 3734 } 3735 return FORWARD; 3736 } 3737 3738 @Override 3739 public void onFinishedInputEvent(Object token, boolean handled) { 3740 QueuedInputEvent q = (QueuedInputEvent)token; 3741 if (handled) { 3742 finish(q, true); 3743 return; 3744 } 3745 forward(q); 3746 } 3747 } 3748 3749 /** 3750 * Delivers post-ime input events to the view hierarchy. 3751 */ 3752 final class ViewPostImeInputStage extends InputStage { 3753 public ViewPostImeInputStage(InputStage next) { 3754 super(next); 3755 } 3756 3757 @Override 3758 protected int onProcess(QueuedInputEvent q) { 3759 if (q.mEvent instanceof KeyEvent) { 3760 return processKeyEvent(q); 3761 } else { 3762 final int source = q.mEvent.getSource(); 3763 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 3764 return processPointerEvent(q); 3765 } else if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 3766 return processTrackballEvent(q); 3767 } else { 3768 return processGenericMotionEvent(q); 3769 } 3770 } 3771 } 3772 3773 private int processKeyEvent(QueuedInputEvent q) { 3774 final KeyEvent event = (KeyEvent)q.mEvent; 3775 3776 // Deliver the key to the view hierarchy. 3777 if (mView.dispatchKeyEvent(event)) { 3778 return FINISH_HANDLED; 3779 } 3780 3781 // If the Control modifier is held, try to interpret the key as a shortcut. 3782 if (event.getAction() == KeyEvent.ACTION_DOWN 3783 && event.isCtrlPressed() 3784 && event.getRepeatCount() == 0 3785 && !KeyEvent.isModifierKey(event.getKeyCode())) { 3786 if (mView.dispatchKeyShortcutEvent(event)) { 3787 return FINISH_HANDLED; 3788 } 3789 } 3790 3791 // Apply the fallback event policy. 3792 if (mFallbackEventHandler.dispatchKeyEvent(event)) { 3793 return FINISH_HANDLED; 3794 } 3795 3796 // Handle automatic focus changes. 3797 if (event.getAction() == KeyEvent.ACTION_DOWN) { 3798 int direction = 0; 3799 switch (event.getKeyCode()) { 3800 case KeyEvent.KEYCODE_DPAD_LEFT: 3801 if (event.hasNoModifiers()) { 3802 direction = View.FOCUS_LEFT; 3803 } 3804 break; 3805 case KeyEvent.KEYCODE_DPAD_RIGHT: 3806 if (event.hasNoModifiers()) { 3807 direction = View.FOCUS_RIGHT; 3808 } 3809 break; 3810 case KeyEvent.KEYCODE_DPAD_UP: 3811 if (event.hasNoModifiers()) { 3812 direction = View.FOCUS_UP; 3813 } 3814 break; 3815 case KeyEvent.KEYCODE_DPAD_DOWN: 3816 if (event.hasNoModifiers()) { 3817 direction = View.FOCUS_DOWN; 3818 } 3819 break; 3820 case KeyEvent.KEYCODE_TAB: 3821 if (event.hasNoModifiers()) { 3822 direction = View.FOCUS_FORWARD; 3823 } else if (event.hasModifiers(KeyEvent.META_SHIFT_ON)) { 3824 direction = View.FOCUS_BACKWARD; 3825 } 3826 break; 3827 } 3828 if (direction != 0) { 3829 View focused = mView.findFocus(); 3830 if (focused != null) { 3831 View v = focused.focusSearch(direction); 3832 if (v != null && v != focused) { 3833 // do the math the get the interesting rect 3834 // of previous focused into the coord system of 3835 // newly focused view 3836 focused.getFocusedRect(mTempRect); 3837 if (mView instanceof ViewGroup) { 3838 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 3839 focused, mTempRect); 3840 ((ViewGroup) mView).offsetRectIntoDescendantCoords( 3841 v, mTempRect); 3842 } 3843 if (v.requestFocus(direction, mTempRect)) { 3844 playSoundEffect(SoundEffectConstants 3845 .getContantForFocusDirection(direction)); 3846 return FINISH_HANDLED; 3847 } 3848 } 3849 3850 // Give the focused view a last chance to handle the dpad key. 3851 if (mView.dispatchUnhandledMove(focused, direction)) { 3852 return FINISH_HANDLED; 3853 } 3854 } else { 3855 // find the best view to give focus to in this non-touch-mode with no-focus 3856 View v = focusSearch(null, direction); 3857 if (v != null && v.requestFocus(direction)) { 3858 return FINISH_HANDLED; 3859 } 3860 } 3861 } 3862 } 3863 return FORWARD; 3864 } 3865 3866 private int processPointerEvent(QueuedInputEvent q) { 3867 final MotionEvent event = (MotionEvent)q.mEvent; 3868 3869 if (mView.dispatchPointerEvent(event)) { 3870 return FINISH_HANDLED; 3871 } 3872 return FORWARD; 3873 } 3874 3875 private int processTrackballEvent(QueuedInputEvent q) { 3876 final MotionEvent event = (MotionEvent)q.mEvent; 3877 3878 if (mView.dispatchTrackballEvent(event)) { 3879 return FINISH_HANDLED; 3880 } 3881 return FORWARD; 3882 } 3883 3884 private int processGenericMotionEvent(QueuedInputEvent q) { 3885 final MotionEvent event = (MotionEvent)q.mEvent; 3886 3887 // Deliver the event to the view. 3888 if (mView.dispatchGenericMotionEvent(event)) { 3889 return FINISH_HANDLED; 3890 } 3891 return FORWARD; 3892 } 3893 } 3894 3895 /** 3896 * Performs synthesis of new input events from unhandled input events. 3897 */ 3898 final class SyntheticInputStage extends InputStage { 3899 private final SyntheticTrackballHandler mTrackball = new SyntheticTrackballHandler(); 3900 private final SyntheticJoystickHandler mJoystick = new SyntheticJoystickHandler(); 3901 private final SyntheticTouchNavigationHandler mTouchNavigation = 3902 new SyntheticTouchNavigationHandler(); 3903 3904 public SyntheticInputStage() { 3905 super(null); 3906 } 3907 3908 @Override 3909 protected int onProcess(QueuedInputEvent q) { 3910 q.mFlags |= QueuedInputEvent.FLAG_RESYNTHESIZED; 3911 if (q.mEvent instanceof MotionEvent) { 3912 final MotionEvent event = (MotionEvent)q.mEvent; 3913 final int source = event.getSource(); 3914 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 3915 mTrackball.process(event); 3916 return FINISH_HANDLED; 3917 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 3918 mJoystick.process(event); 3919 return FINISH_HANDLED; 3920 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 3921 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 3922 mTouchNavigation.process(event); 3923 return FINISH_HANDLED; 3924 } 3925 } 3926 return FORWARD; 3927 } 3928 3929 @Override 3930 protected void onDeliverToNext(QueuedInputEvent q) { 3931 if ((q.mFlags & QueuedInputEvent.FLAG_RESYNTHESIZED) == 0) { 3932 // Cancel related synthetic events if any prior stage has handled the event. 3933 if (q.mEvent instanceof MotionEvent) { 3934 final MotionEvent event = (MotionEvent)q.mEvent; 3935 final int source = event.getSource(); 3936 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 3937 mTrackball.cancel(event); 3938 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 3939 mJoystick.cancel(event); 3940 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 3941 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 3942 mTouchNavigation.cancel(event); 3943 } 3944 } 3945 } 3946 super.onDeliverToNext(q); 3947 } 3948 } 3949 3950 /** 3951 * Creates dpad events from unhandled trackball movements. 3952 */ 3953 final class SyntheticTrackballHandler { 3954 private final TrackballAxis mX = new TrackballAxis(); 3955 private final TrackballAxis mY = new TrackballAxis(); 3956 private long mLastTime; 3957 3958 public void process(MotionEvent event) { 3959 // Translate the trackball event into DPAD keys and try to deliver those. 3960 long curTime = SystemClock.uptimeMillis(); 3961 if ((mLastTime + MAX_TRACKBALL_DELAY) < curTime) { 3962 // It has been too long since the last movement, 3963 // so restart at the beginning. 3964 mX.reset(0); 3965 mY.reset(0); 3966 mLastTime = curTime; 3967 } 3968 3969 final int action = event.getAction(); 3970 final int metaState = event.getMetaState(); 3971 switch (action) { 3972 case MotionEvent.ACTION_DOWN: 3973 mX.reset(2); 3974 mY.reset(2); 3975 enqueueInputEvent(new KeyEvent(curTime, curTime, 3976 KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 3977 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 3978 InputDevice.SOURCE_KEYBOARD)); 3979 break; 3980 case MotionEvent.ACTION_UP: 3981 mX.reset(2); 3982 mY.reset(2); 3983 enqueueInputEvent(new KeyEvent(curTime, curTime, 3984 KeyEvent.ACTION_UP, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 3985 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 3986 InputDevice.SOURCE_KEYBOARD)); 3987 break; 3988 } 3989 3990 if (DEBUG_TRACKBALL) Log.v(TAG, "TB X=" + mX.position + " step=" 3991 + mX.step + " dir=" + mX.dir + " acc=" + mX.acceleration 3992 + " move=" + event.getX() 3993 + " / Y=" + mY.position + " step=" 3994 + mY.step + " dir=" + mY.dir + " acc=" + mY.acceleration 3995 + " move=" + event.getY()); 3996 final float xOff = mX.collect(event.getX(), event.getEventTime(), "X"); 3997 final float yOff = mY.collect(event.getY(), event.getEventTime(), "Y"); 3998 3999 // Generate DPAD events based on the trackball movement. 4000 // We pick the axis that has moved the most as the direction of 4001 // the DPAD. When we generate DPAD events for one axis, then the 4002 // other axis is reset -- we don't want to perform DPAD jumps due 4003 // to slight movements in the trackball when making major movements 4004 // along the other axis. 4005 int keycode = 0; 4006 int movement = 0; 4007 float accel = 1; 4008 if (xOff > yOff) { 4009 movement = mX.generate(); 4010 if (movement != 0) { 4011 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_RIGHT 4012 : KeyEvent.KEYCODE_DPAD_LEFT; 4013 accel = mX.acceleration; 4014 mY.reset(2); 4015 } 4016 } else if (yOff > 0) { 4017 movement = mY.generate(); 4018 if (movement != 0) { 4019 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_DOWN 4020 : KeyEvent.KEYCODE_DPAD_UP; 4021 accel = mY.acceleration; 4022 mX.reset(2); 4023 } 4024 } 4025 4026 if (keycode != 0) { 4027 if (movement < 0) movement = -movement; 4028 int accelMovement = (int)(movement * accel); 4029 if (DEBUG_TRACKBALL) Log.v(TAG, "Move: movement=" + movement 4030 + " accelMovement=" + accelMovement 4031 + " accel=" + accel); 4032 if (accelMovement > movement) { 4033 if (DEBUG_TRACKBALL) Log.v(TAG, "Delivering fake DPAD: " 4034 + keycode); 4035 movement--; 4036 int repeatCount = accelMovement - movement; 4037 enqueueInputEvent(new KeyEvent(curTime, curTime, 4038 KeyEvent.ACTION_MULTIPLE, keycode, repeatCount, metaState, 4039 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4040 InputDevice.SOURCE_KEYBOARD)); 4041 } 4042 while (movement > 0) { 4043 if (DEBUG_TRACKBALL) Log.v(TAG, "Delivering fake DPAD: " 4044 + keycode); 4045 movement--; 4046 curTime = SystemClock.uptimeMillis(); 4047 enqueueInputEvent(new KeyEvent(curTime, curTime, 4048 KeyEvent.ACTION_DOWN, keycode, 0, metaState, 4049 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4050 InputDevice.SOURCE_KEYBOARD)); 4051 enqueueInputEvent(new KeyEvent(curTime, curTime, 4052 KeyEvent.ACTION_UP, keycode, 0, metaState, 4053 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4054 InputDevice.SOURCE_KEYBOARD)); 4055 } 4056 mLastTime = curTime; 4057 } 4058 } 4059 4060 public void cancel(MotionEvent event) { 4061 mLastTime = Integer.MIN_VALUE; 4062 4063 // If we reach this, we consumed a trackball event. 4064 // Because we will not translate the trackball event into a key event, 4065 // touch mode will not exit, so we exit touch mode here. 4066 if (mView != null && mAdded) { 4067 ensureTouchMode(false); 4068 } 4069 } 4070 } 4071 4072 /** 4073 * Maintains state information for a single trackball axis, generating 4074 * discrete (DPAD) movements based on raw trackball motion. 4075 */ 4076 static final class TrackballAxis { 4077 /** 4078 * The maximum amount of acceleration we will apply. 4079 */ 4080 static final float MAX_ACCELERATION = 20; 4081 4082 /** 4083 * The maximum amount of time (in milliseconds) between events in order 4084 * for us to consider the user to be doing fast trackball movements, 4085 * and thus apply an acceleration. 4086 */ 4087 static final long FAST_MOVE_TIME = 150; 4088 4089 /** 4090 * Scaling factor to the time (in milliseconds) between events to how 4091 * much to multiple/divide the current acceleration. When movement 4092 * is < FAST_MOVE_TIME this multiplies the acceleration; when > 4093 * FAST_MOVE_TIME it divides it. 4094 */ 4095 static final float ACCEL_MOVE_SCALING_FACTOR = (1.0f/40); 4096 4097 static final float FIRST_MOVEMENT_THRESHOLD = 0.5f; 4098 static final float SECOND_CUMULATIVE_MOVEMENT_THRESHOLD = 2.0f; 4099 static final float SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD = 1.0f; 4100 4101 float position; 4102 float acceleration = 1; 4103 long lastMoveTime = 0; 4104 int step; 4105 int dir; 4106 int nonAccelMovement; 4107 4108 void reset(int _step) { 4109 position = 0; 4110 acceleration = 1; 4111 lastMoveTime = 0; 4112 step = _step; 4113 dir = 0; 4114 } 4115 4116 /** 4117 * Add trackball movement into the state. If the direction of movement 4118 * has been reversed, the state is reset before adding the 4119 * movement (so that you don't have to compensate for any previously 4120 * collected movement before see the result of the movement in the 4121 * new direction). 4122 * 4123 * @return Returns the absolute value of the amount of movement 4124 * collected so far. 4125 */ 4126 float collect(float off, long time, String axis) { 4127 long normTime; 4128 if (off > 0) { 4129 normTime = (long)(off * FAST_MOVE_TIME); 4130 if (dir < 0) { 4131 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to positive!"); 4132 position = 0; 4133 step = 0; 4134 acceleration = 1; 4135 lastMoveTime = 0; 4136 } 4137 dir = 1; 4138 } else if (off < 0) { 4139 normTime = (long)((-off) * FAST_MOVE_TIME); 4140 if (dir > 0) { 4141 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to negative!"); 4142 position = 0; 4143 step = 0; 4144 acceleration = 1; 4145 lastMoveTime = 0; 4146 } 4147 dir = -1; 4148 } else { 4149 normTime = 0; 4150 } 4151 4152 // The number of milliseconds between each movement that is 4153 // considered "normal" and will not result in any acceleration 4154 // or deceleration, scaled by the offset we have here. 4155 if (normTime > 0) { 4156 long delta = time - lastMoveTime; 4157 lastMoveTime = time; 4158 float acc = acceleration; 4159 if (delta < normTime) { 4160 // The user is scrolling rapidly, so increase acceleration. 4161 float scale = (normTime-delta) * ACCEL_MOVE_SCALING_FACTOR; 4162 if (scale > 1) acc *= scale; 4163 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " accelerate: off=" 4164 + off + " normTime=" + normTime + " delta=" + delta 4165 + " scale=" + scale + " acc=" + acc); 4166 acceleration = acc < MAX_ACCELERATION ? acc : MAX_ACCELERATION; 4167 } else { 4168 // The user is scrolling slowly, so decrease acceleration. 4169 float scale = (delta-normTime) * ACCEL_MOVE_SCALING_FACTOR; 4170 if (scale > 1) acc /= scale; 4171 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " deccelerate: off=" 4172 + off + " normTime=" + normTime + " delta=" + delta 4173 + " scale=" + scale + " acc=" + acc); 4174 acceleration = acc > 1 ? acc : 1; 4175 } 4176 } 4177 position += off; 4178 return Math.abs(position); 4179 } 4180 4181 /** 4182 * Generate the number of discrete movement events appropriate for 4183 * the currently collected trackball movement. 4184 * 4185 * @return Returns the number of discrete movements, either positive 4186 * or negative, or 0 if there is not enough trackball movement yet 4187 * for a discrete movement. 4188 */ 4189 int generate() { 4190 int movement = 0; 4191 nonAccelMovement = 0; 4192 do { 4193 final int dir = position >= 0 ? 1 : -1; 4194 switch (step) { 4195 // If we are going to execute the first step, then we want 4196 // to do this as soon as possible instead of waiting for 4197 // a full movement, in order to make things look responsive. 4198 case 0: 4199 if (Math.abs(position) < FIRST_MOVEMENT_THRESHOLD) { 4200 return movement; 4201 } 4202 movement += dir; 4203 nonAccelMovement += dir; 4204 step = 1; 4205 break; 4206 // If we have generated the first movement, then we need 4207 // to wait for the second complete trackball motion before 4208 // generating the second discrete movement. 4209 case 1: 4210 if (Math.abs(position) < SECOND_CUMULATIVE_MOVEMENT_THRESHOLD) { 4211 return movement; 4212 } 4213 movement += dir; 4214 nonAccelMovement += dir; 4215 position -= SECOND_CUMULATIVE_MOVEMENT_THRESHOLD * dir; 4216 step = 2; 4217 break; 4218 // After the first two, we generate discrete movements 4219 // consistently with the trackball, applying an acceleration 4220 // if the trackball is moving quickly. This is a simple 4221 // acceleration on top of what we already compute based 4222 // on how quickly the wheel is being turned, to apply 4223 // a longer increasing acceleration to continuous movement 4224 // in one direction. 4225 default: 4226 if (Math.abs(position) < SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD) { 4227 return movement; 4228 } 4229 movement += dir; 4230 position -= dir * SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD; 4231 float acc = acceleration; 4232 acc *= 1.1f; 4233 acceleration = acc < MAX_ACCELERATION ? acc : acceleration; 4234 break; 4235 } 4236 } while (true); 4237 } 4238 } 4239 4240 /** 4241 * Creates dpad events from unhandled joystick movements. 4242 */ 4243 final class SyntheticJoystickHandler extends Handler { 4244 private final static int MSG_ENQUEUE_X_AXIS_KEY_REPEAT = 1; 4245 private final static int MSG_ENQUEUE_Y_AXIS_KEY_REPEAT = 2; 4246 4247 private int mLastXDirection; 4248 private int mLastYDirection; 4249 private int mLastXKeyCode; 4250 private int mLastYKeyCode; 4251 4252 public SyntheticJoystickHandler() { 4253 super(true); 4254 } 4255 4256 @Override 4257 public void handleMessage(Message msg) { 4258 switch (msg.what) { 4259 case MSG_ENQUEUE_X_AXIS_KEY_REPEAT: 4260 case MSG_ENQUEUE_Y_AXIS_KEY_REPEAT: { 4261 KeyEvent oldEvent = (KeyEvent)msg.obj; 4262 KeyEvent e = KeyEvent.changeTimeRepeat(oldEvent, 4263 SystemClock.uptimeMillis(), 4264 oldEvent.getRepeatCount() + 1); 4265 if (mAttachInfo.mHasWindowFocus) { 4266 enqueueInputEvent(e); 4267 Message m = obtainMessage(msg.what, e); 4268 m.setAsynchronous(true); 4269 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatDelay()); 4270 } 4271 } break; 4272 } 4273 } 4274 4275 public void process(MotionEvent event) { 4276 update(event, true); 4277 } 4278 4279 public void cancel(MotionEvent event) { 4280 update(event, false); 4281 } 4282 4283 private void update(MotionEvent event, boolean synthesizeNewKeys) { 4284 final long time = event.getEventTime(); 4285 final int metaState = event.getMetaState(); 4286 final int deviceId = event.getDeviceId(); 4287 final int source = event.getSource(); 4288 4289 int xDirection = joystickAxisValueToDirection( 4290 event.getAxisValue(MotionEvent.AXIS_HAT_X)); 4291 if (xDirection == 0) { 4292 xDirection = joystickAxisValueToDirection(event.getX()); 4293 } 4294 4295 int yDirection = joystickAxisValueToDirection( 4296 event.getAxisValue(MotionEvent.AXIS_HAT_Y)); 4297 if (yDirection == 0) { 4298 yDirection = joystickAxisValueToDirection(event.getY()); 4299 } 4300 4301 if (xDirection != mLastXDirection) { 4302 if (mLastXKeyCode != 0) { 4303 removeMessages(MSG_ENQUEUE_X_AXIS_KEY_REPEAT); 4304 enqueueInputEvent(new KeyEvent(time, time, 4305 KeyEvent.ACTION_UP, mLastXKeyCode, 0, metaState, 4306 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4307 mLastXKeyCode = 0; 4308 } 4309 4310 mLastXDirection = xDirection; 4311 4312 if (xDirection != 0 && synthesizeNewKeys) { 4313 mLastXKeyCode = xDirection > 0 4314 ? KeyEvent.KEYCODE_DPAD_RIGHT : KeyEvent.KEYCODE_DPAD_LEFT; 4315 final KeyEvent e = new KeyEvent(time, time, 4316 KeyEvent.ACTION_DOWN, mLastXKeyCode, 0, metaState, 4317 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4318 enqueueInputEvent(e); 4319 Message m = obtainMessage(MSG_ENQUEUE_X_AXIS_KEY_REPEAT, e); 4320 m.setAsynchronous(true); 4321 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4322 } 4323 } 4324 4325 if (yDirection != mLastYDirection) { 4326 if (mLastYKeyCode != 0) { 4327 removeMessages(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT); 4328 enqueueInputEvent(new KeyEvent(time, time, 4329 KeyEvent.ACTION_UP, mLastYKeyCode, 0, metaState, 4330 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4331 mLastYKeyCode = 0; 4332 } 4333 4334 mLastYDirection = yDirection; 4335 4336 if (yDirection != 0 && synthesizeNewKeys) { 4337 mLastYKeyCode = yDirection > 0 4338 ? KeyEvent.KEYCODE_DPAD_DOWN : KeyEvent.KEYCODE_DPAD_UP; 4339 final KeyEvent e = new KeyEvent(time, time, 4340 KeyEvent.ACTION_DOWN, mLastYKeyCode, 0, metaState, 4341 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4342 enqueueInputEvent(e); 4343 Message m = obtainMessage(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT, e); 4344 m.setAsynchronous(true); 4345 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4346 } 4347 } 4348 } 4349 4350 private int joystickAxisValueToDirection(float value) { 4351 if (value >= 0.5f) { 4352 return 1; 4353 } else if (value <= -0.5f) { 4354 return -1; 4355 } else { 4356 return 0; 4357 } 4358 } 4359 } 4360 4361 /** 4362 * Creates dpad events from unhandled touch navigation movements. 4363 */ 4364 final class SyntheticTouchNavigationHandler extends Handler { 4365 private static final String LOCAL_TAG = "SyntheticTouchNavigationHandler"; 4366 private static final boolean LOCAL_DEBUG = false; 4367 4368 // Assumed nominal width and height in millimeters of a touch navigation pad, 4369 // if no resolution information is available from the input system. 4370 private static final float DEFAULT_WIDTH_MILLIMETERS = 48; 4371 private static final float DEFAULT_HEIGHT_MILLIMETERS = 48; 4372 4373 /* TODO: These constants should eventually be moved to ViewConfiguration. */ 4374 4375 // Tap timeout in milliseconds. 4376 private static final int TAP_TIMEOUT = 250; 4377 4378 // The maximum distance traveled for a gesture to be considered a tap in millimeters. 4379 private static final int TAP_SLOP_MILLIMETERS = 5; 4380 4381 // The nominal distance traveled to move by one unit. 4382 private static final int TICK_DISTANCE_MILLIMETERS = 12; 4383 4384 // Minimum and maximum fling velocity in ticks per second. 4385 // The minimum velocity should be set such that we perform enough ticks per 4386 // second that the fling appears to be fluid. For example, if we set the minimum 4387 // to 2 ticks per second, then there may be up to half a second delay between the next 4388 // to last and last ticks which is noticeably discrete and jerky. This value should 4389 // probably not be set to anything less than about 4. 4390 // If fling accuracy is a problem then consider tuning the tick distance instead. 4391 private static final float MIN_FLING_VELOCITY_TICKS_PER_SECOND = 6f; 4392 private static final float MAX_FLING_VELOCITY_TICKS_PER_SECOND = 20f; 4393 4394 // Fling velocity decay factor applied after each new key is emitted. 4395 // This parameter controls the deceleration and overall duration of the fling. 4396 // The fling stops automatically when its velocity drops below the minimum 4397 // fling velocity defined above. 4398 private static final float FLING_TICK_DECAY = 0.8f; 4399 4400 /* The input device that we are tracking. */ 4401 4402 private int mCurrentDeviceId = -1; 4403 private int mCurrentSource; 4404 private boolean mCurrentDeviceSupported; 4405 4406 /* Configuration for the current input device. */ 4407 4408 // The tap timeout and scaled slop. 4409 private int mConfigTapTimeout; 4410 private float mConfigTapSlop; 4411 4412 // The scaled tick distance. A movement of this amount should generally translate 4413 // into a single dpad event in a given direction. 4414 private float mConfigTickDistance; 4415 4416 // The minimum and maximum scaled fling velocity. 4417 private float mConfigMinFlingVelocity; 4418 private float mConfigMaxFlingVelocity; 4419 4420 /* Tracking state. */ 4421 4422 // The velocity tracker for detecting flings. 4423 private VelocityTracker mVelocityTracker; 4424 4425 // The active pointer id, or -1 if none. 4426 private int mActivePointerId = -1; 4427 4428 // Time and location where tracking started. 4429 private long mStartTime; 4430 private float mStartX; 4431 private float mStartY; 4432 4433 // Most recently observed position. 4434 private float mLastX; 4435 private float mLastY; 4436 4437 // Accumulated movement delta since the last direction key was sent. 4438 private float mAccumulatedX; 4439 private float mAccumulatedY; 4440 4441 // Set to true if any movement was delivered to the app. 4442 // Implies that tap slop was exceeded. 4443 private boolean mConsumedMovement; 4444 4445 // The most recently sent key down event. 4446 // The keycode remains set until the direction changes or a fling ends 4447 // so that repeated key events may be generated as required. 4448 private long mPendingKeyDownTime; 4449 private int mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 4450 private int mPendingKeyRepeatCount; 4451 private int mPendingKeyMetaState; 4452 4453 // The current fling velocity while a fling is in progress. 4454 private boolean mFlinging; 4455 private float mFlingVelocity; 4456 4457 public SyntheticTouchNavigationHandler() { 4458 super(true); 4459 } 4460 4461 public void process(MotionEvent event) { 4462 // Update the current device information. 4463 final long time = event.getEventTime(); 4464 final int deviceId = event.getDeviceId(); 4465 final int source = event.getSource(); 4466 if (mCurrentDeviceId != deviceId || mCurrentSource != source) { 4467 finishKeys(time); 4468 finishTracking(time); 4469 mCurrentDeviceId = deviceId; 4470 mCurrentSource = source; 4471 mCurrentDeviceSupported = false; 4472 InputDevice device = event.getDevice(); 4473 if (device != null) { 4474 // In order to support an input device, we must know certain 4475 // characteristics about it, such as its size and resolution. 4476 InputDevice.MotionRange xRange = device.getMotionRange(MotionEvent.AXIS_X); 4477 InputDevice.MotionRange yRange = device.getMotionRange(MotionEvent.AXIS_Y); 4478 if (xRange != null && yRange != null) { 4479 mCurrentDeviceSupported = true; 4480 4481 // Infer the resolution if it not actually known. 4482 float xRes = xRange.getResolution(); 4483 if (xRes <= 0) { 4484 xRes = xRange.getRange() / DEFAULT_WIDTH_MILLIMETERS; 4485 } 4486 float yRes = yRange.getResolution(); 4487 if (yRes <= 0) { 4488 yRes = yRange.getRange() / DEFAULT_HEIGHT_MILLIMETERS; 4489 } 4490 float nominalRes = (xRes + yRes) * 0.5f; 4491 4492 // Precompute all of the configuration thresholds we will need. 4493 mConfigTapTimeout = TAP_TIMEOUT; 4494 mConfigTapSlop = TAP_SLOP_MILLIMETERS * nominalRes; 4495 mConfigTickDistance = TICK_DISTANCE_MILLIMETERS * nominalRes; 4496 mConfigMinFlingVelocity = 4497 MIN_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 4498 mConfigMaxFlingVelocity = 4499 MAX_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 4500 4501 if (LOCAL_DEBUG) { 4502 Log.d(LOCAL_TAG, "Configured device " + mCurrentDeviceId 4503 + " (" + Integer.toHexString(mCurrentSource) + "): " 4504 + "mConfigTapTimeout=" + mConfigTapTimeout 4505 + ", mConfigTapSlop=" + mConfigTapSlop 4506 + ", mConfigTickDistance=" + mConfigTickDistance 4507 + ", mConfigMinFlingVelocity=" + mConfigMinFlingVelocity 4508 + ", mConfigMaxFlingVelocity=" + mConfigMaxFlingVelocity); 4509 } 4510 } 4511 } 4512 } 4513 if (!mCurrentDeviceSupported) { 4514 return; 4515 } 4516 4517 // Handle the event. 4518 final int action = event.getActionMasked(); 4519 switch (action) { 4520 case MotionEvent.ACTION_DOWN: { 4521 boolean caughtFling = mFlinging; 4522 finishKeys(time); 4523 finishTracking(time); 4524 mActivePointerId = event.getPointerId(0); 4525 mVelocityTracker = VelocityTracker.obtain(); 4526 mVelocityTracker.addMovement(event); 4527 mStartTime = time; 4528 mStartX = event.getX(); 4529 mStartY = event.getY(); 4530 mLastX = mStartX; 4531 mLastY = mStartY; 4532 mAccumulatedX = 0; 4533 mAccumulatedY = 0; 4534 4535 // If we caught a fling, then pretend that the tap slop has already 4536 // been exceeded to suppress taps whose only purpose is to stop the fling. 4537 mConsumedMovement = caughtFling; 4538 break; 4539 } 4540 4541 case MotionEvent.ACTION_MOVE: 4542 case MotionEvent.ACTION_UP: { 4543 if (mActivePointerId < 0) { 4544 break; 4545 } 4546 final int index = event.findPointerIndex(mActivePointerId); 4547 if (index < 0) { 4548 finishKeys(time); 4549 finishTracking(time); 4550 break; 4551 } 4552 4553 mVelocityTracker.addMovement(event); 4554 final float x = event.getX(index); 4555 final float y = event.getY(index); 4556 mAccumulatedX += x - mLastX; 4557 mAccumulatedY += y - mLastY; 4558 mLastX = x; 4559 mLastY = y; 4560 4561 // Consume any accumulated movement so far. 4562 final int metaState = event.getMetaState(); 4563 consumeAccumulatedMovement(time, metaState); 4564 4565 // Detect taps and flings. 4566 if (action == MotionEvent.ACTION_UP) { 4567 if (!mConsumedMovement 4568 && Math.hypot(mLastX - mStartX, mLastY - mStartY) < mConfigTapSlop 4569 && time <= mStartTime + mConfigTapTimeout) { 4570 // It's a tap! 4571 finishKeys(time); 4572 sendKeyDownOrRepeat(time, KeyEvent.KEYCODE_DPAD_CENTER, metaState); 4573 sendKeyUp(time); 4574 } else if (mConsumedMovement 4575 && mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 4576 // It might be a fling. 4577 mVelocityTracker.computeCurrentVelocity(1000, mConfigMaxFlingVelocity); 4578 final float vx = mVelocityTracker.getXVelocity(mActivePointerId); 4579 final float vy = mVelocityTracker.getYVelocity(mActivePointerId); 4580 if (!startFling(time, vx, vy)) { 4581 finishKeys(time); 4582 } 4583 } 4584 finishTracking(time); 4585 } 4586 break; 4587 } 4588 4589 case MotionEvent.ACTION_CANCEL: { 4590 finishKeys(time); 4591 finishTracking(time); 4592 break; 4593 } 4594 } 4595 } 4596 4597 public void cancel(MotionEvent event) { 4598 if (mCurrentDeviceId == event.getDeviceId() 4599 && mCurrentSource == event.getSource()) { 4600 final long time = event.getEventTime(); 4601 finishKeys(time); 4602 finishTracking(time); 4603 } 4604 } 4605 4606 private void finishKeys(long time) { 4607 cancelFling(); 4608 sendKeyUp(time); 4609 } 4610 4611 private void finishTracking(long time) { 4612 if (mActivePointerId >= 0) { 4613 mActivePointerId = -1; 4614 mVelocityTracker.recycle(); 4615 mVelocityTracker = null; 4616 } 4617 } 4618 4619 private void consumeAccumulatedMovement(long time, int metaState) { 4620 final float absX = Math.abs(mAccumulatedX); 4621 final float absY = Math.abs(mAccumulatedY); 4622 if (absX >= absY) { 4623 if (absX >= mConfigTickDistance) { 4624 mAccumulatedX = consumeAccumulatedMovement(time, metaState, mAccumulatedX, 4625 KeyEvent.KEYCODE_DPAD_LEFT, KeyEvent.KEYCODE_DPAD_RIGHT); 4626 mAccumulatedY = 0; 4627 mConsumedMovement = true; 4628 } 4629 } else { 4630 if (absY >= mConfigTickDistance) { 4631 mAccumulatedY = consumeAccumulatedMovement(time, metaState, mAccumulatedY, 4632 KeyEvent.KEYCODE_DPAD_UP, KeyEvent.KEYCODE_DPAD_DOWN); 4633 mAccumulatedX = 0; 4634 mConsumedMovement = true; 4635 } 4636 } 4637 } 4638 4639 private float consumeAccumulatedMovement(long time, int metaState, 4640 float accumulator, int negativeKeyCode, int positiveKeyCode) { 4641 while (accumulator <= -mConfigTickDistance) { 4642 sendKeyDownOrRepeat(time, negativeKeyCode, metaState); 4643 accumulator += mConfigTickDistance; 4644 } 4645 while (accumulator >= mConfigTickDistance) { 4646 sendKeyDownOrRepeat(time, positiveKeyCode, metaState); 4647 accumulator -= mConfigTickDistance; 4648 } 4649 return accumulator; 4650 } 4651 4652 private void sendKeyDownOrRepeat(long time, int keyCode, int metaState) { 4653 if (mPendingKeyCode != keyCode) { 4654 sendKeyUp(time); 4655 mPendingKeyDownTime = time; 4656 mPendingKeyCode = keyCode; 4657 mPendingKeyRepeatCount = 0; 4658 } else { 4659 mPendingKeyRepeatCount += 1; 4660 } 4661 mPendingKeyMetaState = metaState; 4662 4663 // Note: Normally we would pass FLAG_LONG_PRESS when the repeat count is 1 4664 // but it doesn't quite make sense when simulating the events in this way. 4665 if (LOCAL_DEBUG) { 4666 Log.d(LOCAL_TAG, "Sending key down: keyCode=" + mPendingKeyCode 4667 + ", repeatCount=" + mPendingKeyRepeatCount 4668 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 4669 } 4670 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 4671 KeyEvent.ACTION_DOWN, mPendingKeyCode, mPendingKeyRepeatCount, 4672 mPendingKeyMetaState, mCurrentDeviceId, 4673 KeyEvent.FLAG_FALLBACK, mCurrentSource)); 4674 } 4675 4676 private void sendKeyUp(long time) { 4677 if (mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 4678 if (LOCAL_DEBUG) { 4679 Log.d(LOCAL_TAG, "Sending key up: keyCode=" + mPendingKeyCode 4680 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 4681 } 4682 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 4683 KeyEvent.ACTION_UP, mPendingKeyCode, 0, mPendingKeyMetaState, 4684 mCurrentDeviceId, 0, KeyEvent.FLAG_FALLBACK, 4685 mCurrentSource)); 4686 mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 4687 } 4688 } 4689 4690 private boolean startFling(long time, float vx, float vy) { 4691 if (LOCAL_DEBUG) { 4692 Log.d(LOCAL_TAG, "Considering fling: vx=" + vx + ", vy=" + vy 4693 + ", min=" + mConfigMinFlingVelocity); 4694 } 4695 4696 // Flings must be oriented in the same direction as the preceding movements. 4697 switch (mPendingKeyCode) { 4698 case KeyEvent.KEYCODE_DPAD_LEFT: 4699 if (-vx >= mConfigMinFlingVelocity 4700 && Math.abs(vy) < mConfigMinFlingVelocity) { 4701 mFlingVelocity = -vx; 4702 break; 4703 } 4704 return false; 4705 4706 case KeyEvent.KEYCODE_DPAD_RIGHT: 4707 if (vx >= mConfigMinFlingVelocity 4708 && Math.abs(vy) < mConfigMinFlingVelocity) { 4709 mFlingVelocity = vx; 4710 break; 4711 } 4712 return false; 4713 4714 case KeyEvent.KEYCODE_DPAD_UP: 4715 if (-vy >= mConfigMinFlingVelocity 4716 && Math.abs(vx) < mConfigMinFlingVelocity) { 4717 mFlingVelocity = -vy; 4718 break; 4719 } 4720 return false; 4721 4722 case KeyEvent.KEYCODE_DPAD_DOWN: 4723 if (vy >= mConfigMinFlingVelocity 4724 && Math.abs(vx) < mConfigMinFlingVelocity) { 4725 mFlingVelocity = vy; 4726 break; 4727 } 4728 return false; 4729 } 4730 4731 // Post the first fling event. 4732 mFlinging = postFling(time); 4733 return mFlinging; 4734 } 4735 4736 private boolean postFling(long time) { 4737 // The idea here is to estimate the time when the pointer would have 4738 // traveled one tick distance unit given the current fling velocity. 4739 // This effect creates continuity of motion. 4740 if (mFlingVelocity >= mConfigMinFlingVelocity) { 4741 long delay = (long)(mConfigTickDistance / mFlingVelocity * 1000); 4742 postAtTime(mFlingRunnable, time + delay); 4743 if (LOCAL_DEBUG) { 4744 Log.d(LOCAL_TAG, "Posted fling: velocity=" 4745 + mFlingVelocity + ", delay=" + delay 4746 + ", keyCode=" + mPendingKeyCode); 4747 } 4748 return true; 4749 } 4750 return false; 4751 } 4752 4753 private void cancelFling() { 4754 if (mFlinging) { 4755 removeCallbacks(mFlingRunnable); 4756 mFlinging = false; 4757 } 4758 } 4759 4760 private final Runnable mFlingRunnable = new Runnable() { 4761 @Override 4762 public void run() { 4763 final long time = SystemClock.uptimeMillis(); 4764 sendKeyDownOrRepeat(time, mPendingKeyCode, mPendingKeyMetaState); 4765 mFlingVelocity *= FLING_TICK_DECAY; 4766 if (!postFling(time)) { 4767 mFlinging = false; 4768 finishKeys(time); 4769 } 4770 } 4771 }; 4772 } 4773 4774 /** 4775 * Returns true if the key is used for keyboard navigation. 4776 * @param keyEvent The key event. 4777 * @return True if the key is used for keyboard navigation. 4778 */ 4779 private static boolean isNavigationKey(KeyEvent keyEvent) { 4780 switch (keyEvent.getKeyCode()) { 4781 case KeyEvent.KEYCODE_DPAD_LEFT: 4782 case KeyEvent.KEYCODE_DPAD_RIGHT: 4783 case KeyEvent.KEYCODE_DPAD_UP: 4784 case KeyEvent.KEYCODE_DPAD_DOWN: 4785 case KeyEvent.KEYCODE_DPAD_CENTER: 4786 case KeyEvent.KEYCODE_PAGE_UP: 4787 case KeyEvent.KEYCODE_PAGE_DOWN: 4788 case KeyEvent.KEYCODE_MOVE_HOME: 4789 case KeyEvent.KEYCODE_MOVE_END: 4790 case KeyEvent.KEYCODE_TAB: 4791 case KeyEvent.KEYCODE_SPACE: 4792 case KeyEvent.KEYCODE_ENTER: 4793 return true; 4794 } 4795 return false; 4796 } 4797 4798 /** 4799 * Returns true if the key is used for typing. 4800 * @param keyEvent The key event. 4801 * @return True if the key is used for typing. 4802 */ 4803 private static boolean isTypingKey(KeyEvent keyEvent) { 4804 return keyEvent.getUnicodeChar() > 0; 4805 } 4806 4807 /** 4808 * See if the key event means we should leave touch mode (and leave touch mode if so). 4809 * @param event The key event. 4810 * @return Whether this key event should be consumed (meaning the act of 4811 * leaving touch mode alone is considered the event). 4812 */ 4813 private boolean checkForLeavingTouchModeAndConsume(KeyEvent event) { 4814 // Only relevant in touch mode. 4815 if (!mAttachInfo.mInTouchMode) { 4816 return false; 4817 } 4818 4819 // Only consider leaving touch mode on DOWN or MULTIPLE actions, never on UP. 4820 final int action = event.getAction(); 4821 if (action != KeyEvent.ACTION_DOWN && action != KeyEvent.ACTION_MULTIPLE) { 4822 return false; 4823 } 4824 4825 // Don't leave touch mode if the IME told us not to. 4826 if ((event.getFlags() & KeyEvent.FLAG_KEEP_TOUCH_MODE) != 0) { 4827 return false; 4828 } 4829 4830 // If the key can be used for keyboard navigation then leave touch mode 4831 // and select a focused view if needed (in ensureTouchMode). 4832 // When a new focused view is selected, we consume the navigation key because 4833 // navigation doesn't make much sense unless a view already has focus so 4834 // the key's purpose is to set focus. 4835 if (isNavigationKey(event)) { 4836 return ensureTouchMode(false); 4837 } 4838 4839 // If the key can be used for typing then leave touch mode 4840 // and select a focused view if needed (in ensureTouchMode). 4841 // Always allow the view to process the typing key. 4842 if (isTypingKey(event)) { 4843 ensureTouchMode(false); 4844 return false; 4845 } 4846 4847 return false; 4848 } 4849 4850 /* drag/drop */ 4851 void setLocalDragState(Object obj) { 4852 mLocalDragState = obj; 4853 } 4854 4855 private void handleDragEvent(DragEvent event) { 4856 // From the root, only drag start/end/location are dispatched. entered/exited 4857 // are determined and dispatched by the viewgroup hierarchy, who then report 4858 // that back here for ultimate reporting back to the framework. 4859 if (mView != null && mAdded) { 4860 final int what = event.mAction; 4861 4862 if (what == DragEvent.ACTION_DRAG_EXITED) { 4863 // A direct EXITED event means that the window manager knows we've just crossed 4864 // a window boundary, so the current drag target within this one must have 4865 // just been exited. Send it the usual notifications and then we're done 4866 // for now. 4867 mView.dispatchDragEvent(event); 4868 } else { 4869 // Cache the drag description when the operation starts, then fill it in 4870 // on subsequent calls as a convenience 4871 if (what == DragEvent.ACTION_DRAG_STARTED) { 4872 mCurrentDragView = null; // Start the current-recipient tracking 4873 mDragDescription = event.mClipDescription; 4874 } else { 4875 event.mClipDescription = mDragDescription; 4876 } 4877 4878 // For events with a [screen] location, translate into window coordinates 4879 if ((what == DragEvent.ACTION_DRAG_LOCATION) || (what == DragEvent.ACTION_DROP)) { 4880 mDragPoint.set(event.mX, event.mY); 4881 if (mTranslator != null) { 4882 mTranslator.translatePointInScreenToAppWindow(mDragPoint); 4883 } 4884 4885 if (mCurScrollY != 0) { 4886 mDragPoint.offset(0, mCurScrollY); 4887 } 4888 4889 event.mX = mDragPoint.x; 4890 event.mY = mDragPoint.y; 4891 } 4892 4893 // Remember who the current drag target is pre-dispatch 4894 final View prevDragView = mCurrentDragView; 4895 4896 // Now dispatch the drag/drop event 4897 boolean result = mView.dispatchDragEvent(event); 4898 4899 // If we changed apparent drag target, tell the OS about it 4900 if (prevDragView != mCurrentDragView) { 4901 try { 4902 if (prevDragView != null) { 4903 mWindowSession.dragRecipientExited(mWindow); 4904 } 4905 if (mCurrentDragView != null) { 4906 mWindowSession.dragRecipientEntered(mWindow); 4907 } 4908 } catch (RemoteException e) { 4909 Slog.e(TAG, "Unable to note drag target change"); 4910 } 4911 } 4912 4913 // Report the drop result when we're done 4914 if (what == DragEvent.ACTION_DROP) { 4915 mDragDescription = null; 4916 try { 4917 Log.i(TAG, "Reporting drop result: " + result); 4918 mWindowSession.reportDropResult(mWindow, result); 4919 } catch (RemoteException e) { 4920 Log.e(TAG, "Unable to report drop result"); 4921 } 4922 } 4923 4924 // When the drag operation ends, release any local state object 4925 // that may have been in use 4926 if (what == DragEvent.ACTION_DRAG_ENDED) { 4927 setLocalDragState(null); 4928 } 4929 } 4930 } 4931 event.recycle(); 4932 } 4933 4934 public void handleDispatchSystemUiVisibilityChanged(SystemUiVisibilityInfo args) { 4935 if (mSeq != args.seq) { 4936 // The sequence has changed, so we need to update our value and make 4937 // sure to do a traversal afterward so the window manager is given our 4938 // most recent data. 4939 mSeq = args.seq; 4940 mAttachInfo.mForceReportNewAttributes = true; 4941 scheduleTraversals(); 4942 } 4943 if (mView == null) return; 4944 if (args.localChanges != 0) { 4945 mView.updateLocalSystemUiVisibility(args.localValue, args.localChanges); 4946 } 4947 if (mAttachInfo != null) { 4948 int visibility = args.globalVisibility&View.SYSTEM_UI_CLEARABLE_FLAGS; 4949 if (visibility != mAttachInfo.mGlobalSystemUiVisibility) { 4950 mAttachInfo.mGlobalSystemUiVisibility = visibility; 4951 mView.dispatchSystemUiVisibilityChanged(visibility); 4952 } 4953 } 4954 } 4955 4956 public void handleDispatchDoneAnimating() { 4957 if (mWindowsAnimating) { 4958 mWindowsAnimating = false; 4959 if (!mDirty.isEmpty() || mIsAnimating || mFullRedrawNeeded) { 4960 scheduleTraversals(); 4961 } 4962 } 4963 } 4964 4965 public void getLastTouchPoint(Point outLocation) { 4966 outLocation.x = (int) mLastTouchPoint.x; 4967 outLocation.y = (int) mLastTouchPoint.y; 4968 } 4969 4970 public void setDragFocus(View newDragTarget) { 4971 if (mCurrentDragView != newDragTarget) { 4972 mCurrentDragView = newDragTarget; 4973 } 4974 } 4975 4976 private AudioManager getAudioManager() { 4977 if (mView == null) { 4978 throw new IllegalStateException("getAudioManager called when there is no mView"); 4979 } 4980 if (mAudioManager == null) { 4981 mAudioManager = (AudioManager) mView.getContext().getSystemService(Context.AUDIO_SERVICE); 4982 } 4983 return mAudioManager; 4984 } 4985 4986 public AccessibilityInteractionController getAccessibilityInteractionController() { 4987 if (mView == null) { 4988 throw new IllegalStateException("getAccessibilityInteractionController" 4989 + " called when there is no mView"); 4990 } 4991 if (mAccessibilityInteractionController == null) { 4992 mAccessibilityInteractionController = new AccessibilityInteractionController(this); 4993 } 4994 return mAccessibilityInteractionController; 4995 } 4996 4997 private int relayoutWindow(WindowManager.LayoutParams params, int viewVisibility, 4998 boolean insetsPending) throws RemoteException { 4999 5000 float appScale = mAttachInfo.mApplicationScale; 5001 boolean restore = false; 5002 if (params != null && mTranslator != null) { 5003 restore = true; 5004 params.backup(); 5005 mTranslator.translateWindowLayout(params); 5006 } 5007 if (params != null) { 5008 if (DBG) Log.d(TAG, "WindowLayout in layoutWindow:" + params); 5009 } 5010 mPendingConfiguration.seq = 0; 5011 //Log.d(TAG, ">>>>>> CALLING relayout"); 5012 if (params != null && mOrigWindowType != params.type) { 5013 // For compatibility with old apps, don't crash here. 5014 if (mTargetSdkVersion < android.os.Build.VERSION_CODES.ICE_CREAM_SANDWICH) { 5015 Slog.w(TAG, "Window type can not be changed after " 5016 + "the window is added; ignoring change of " + mView); 5017 params.type = mOrigWindowType; 5018 } 5019 } 5020 int relayoutResult = mWindowSession.relayout( 5021 mWindow, mSeq, params, 5022 (int) (mView.getMeasuredWidth() * appScale + 0.5f), 5023 (int) (mView.getMeasuredHeight() * appScale + 0.5f), 5024 viewVisibility, insetsPending ? WindowManagerGlobal.RELAYOUT_INSETS_PENDING : 0, 5025 mWinFrame, mPendingOverscanInsets, mPendingContentInsets, mPendingVisibleInsets, 5026 mPendingConfiguration, mSurface); 5027 //Log.d(TAG, "<<<<<< BACK FROM relayout"); 5028 if (restore) { 5029 params.restore(); 5030 } 5031 5032 if (mTranslator != null) { 5033 mTranslator.translateRectInScreenToAppWinFrame(mWinFrame); 5034 mTranslator.translateRectInScreenToAppWindow(mPendingOverscanInsets); 5035 mTranslator.translateRectInScreenToAppWindow(mPendingContentInsets); 5036 mTranslator.translateRectInScreenToAppWindow(mPendingVisibleInsets); 5037 } 5038 return relayoutResult; 5039 } 5040 5041 /** 5042 * {@inheritDoc} 5043 */ 5044 public void playSoundEffect(int effectId) { 5045 checkThread(); 5046 5047 if (mMediaDisabled) { 5048 return; 5049 } 5050 5051 try { 5052 final AudioManager audioManager = getAudioManager(); 5053 5054 switch (effectId) { 5055 case SoundEffectConstants.CLICK: 5056 audioManager.playSoundEffect(AudioManager.FX_KEY_CLICK); 5057 return; 5058 case SoundEffectConstants.NAVIGATION_DOWN: 5059 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_DOWN); 5060 return; 5061 case SoundEffectConstants.NAVIGATION_LEFT: 5062 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_LEFT); 5063 return; 5064 case SoundEffectConstants.NAVIGATION_RIGHT: 5065 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_RIGHT); 5066 return; 5067 case SoundEffectConstants.NAVIGATION_UP: 5068 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_UP); 5069 return; 5070 default: 5071 throw new IllegalArgumentException("unknown effect id " + effectId + 5072 " not defined in " + SoundEffectConstants.class.getCanonicalName()); 5073 } 5074 } catch (IllegalStateException e) { 5075 // Exception thrown by getAudioManager() when mView is null 5076 Log.e(TAG, "FATAL EXCEPTION when attempting to play sound effect: " + e); 5077 e.printStackTrace(); 5078 } 5079 } 5080 5081 /** 5082 * {@inheritDoc} 5083 */ 5084 public boolean performHapticFeedback(int effectId, boolean always) { 5085 try { 5086 return mWindowSession.performHapticFeedback(mWindow, effectId, always); 5087 } catch (RemoteException e) { 5088 return false; 5089 } 5090 } 5091 5092 /** 5093 * {@inheritDoc} 5094 */ 5095 public View focusSearch(View focused, int direction) { 5096 checkThread(); 5097 if (!(mView instanceof ViewGroup)) { 5098 return null; 5099 } 5100 return FocusFinder.getInstance().findNextFocus((ViewGroup) mView, focused, direction); 5101 } 5102 5103 public void debug() { 5104 mView.debug(); 5105 } 5106 5107 public void dumpGfxInfo(int[] info) { 5108 info[0] = info[1] = 0; 5109 if (mView != null) { 5110 getGfxInfo(mView, info); 5111 } 5112 } 5113 5114 private static void getGfxInfo(View view, int[] info) { 5115 DisplayList displayList = view.mDisplayList; 5116 info[0]++; 5117 if (displayList != null) { 5118 info[1] += displayList.getSize(); 5119 } 5120 5121 if (view instanceof ViewGroup) { 5122 ViewGroup group = (ViewGroup) view; 5123 5124 int count = group.getChildCount(); 5125 for (int i = 0; i < count; i++) { 5126 getGfxInfo(group.getChildAt(i), info); 5127 } 5128 } 5129 } 5130 5131 /** 5132 * @param immediate True, do now if not in traversal. False, put on queue and do later. 5133 * @return True, request has been queued. False, request has been completed. 5134 */ 5135 boolean die(boolean immediate) { 5136 // Make sure we do execute immediately if we are in the middle of a traversal or the damage 5137 // done by dispatchDetachedFromWindow will cause havoc on return. 5138 if (immediate && !mIsInTraversal) { 5139 doDie(); 5140 return false; 5141 } 5142 5143 if (!mIsDrawing) { 5144 destroyHardwareRenderer(); 5145 } else { 5146 Log.e(TAG, "Attempting to destroy the window while drawing!\n" + 5147 " window=" + this + ", title=" + mWindowAttributes.getTitle()); 5148 } 5149 mHandler.sendEmptyMessage(MSG_DIE); 5150 return true; 5151 } 5152 5153 void doDie() { 5154 checkThread(); 5155 if (LOCAL_LOGV) Log.v(TAG, "DIE in " + this + " of " + mSurface); 5156 synchronized (this) { 5157 if (mRemoved) { 5158 return; 5159 } 5160 mRemoved = true; 5161 if (mAdded) { 5162 dispatchDetachedFromWindow(); 5163 } 5164 5165 if (mAdded && !mFirst) { 5166 invalidateDisplayLists(); 5167 destroyHardwareRenderer(); 5168 5169 if (mView != null) { 5170 int viewVisibility = mView.getVisibility(); 5171 boolean viewVisibilityChanged = mViewVisibility != viewVisibility; 5172 if (mWindowAttributesChanged || viewVisibilityChanged) { 5173 // If layout params have been changed, first give them 5174 // to the window manager to make sure it has the correct 5175 // animation info. 5176 try { 5177 if ((relayoutWindow(mWindowAttributes, viewVisibility, false) 5178 & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 5179 mWindowSession.finishDrawing(mWindow); 5180 } 5181 } catch (RemoteException e) { 5182 } 5183 } 5184 5185 mSurface.release(); 5186 } 5187 } 5188 5189 mAdded = false; 5190 } 5191 WindowManagerGlobal.getInstance().doRemoveView(this); 5192 } 5193 5194 public void requestUpdateConfiguration(Configuration config) { 5195 Message msg = mHandler.obtainMessage(MSG_UPDATE_CONFIGURATION, config); 5196 mHandler.sendMessage(msg); 5197 } 5198 5199 public void loadSystemProperties() { 5200 mHandler.post(new Runnable() { 5201 @Override 5202 public void run() { 5203 // Profiling 5204 mProfileRendering = SystemProperties.getBoolean(PROPERTY_PROFILE_RENDERING, false); 5205 profileRendering(mAttachInfo.mHasWindowFocus); 5206 5207 // Media (used by sound effects) 5208 mMediaDisabled = SystemProperties.getBoolean(PROPERTY_MEDIA_DISABLED, false); 5209 5210 // Hardware rendering 5211 if (mAttachInfo.mHardwareRenderer != null) { 5212 if (mAttachInfo.mHardwareRenderer.loadSystemProperties(mHolder.getSurface())) { 5213 invalidate(); 5214 } 5215 } 5216 5217 // Layout debugging 5218 boolean layout = SystemProperties.getBoolean(View.DEBUG_LAYOUT_PROPERTY, false); 5219 if (layout != mAttachInfo.mDebugLayout) { 5220 mAttachInfo.mDebugLayout = layout; 5221 if (!mHandler.hasMessages(MSG_INVALIDATE_WORLD)) { 5222 mHandler.sendEmptyMessageDelayed(MSG_INVALIDATE_WORLD, 200); 5223 } 5224 } 5225 } 5226 }); 5227 } 5228 5229 private void destroyHardwareRenderer() { 5230 AttachInfo attachInfo = mAttachInfo; 5231 HardwareRenderer hardwareRenderer = attachInfo.mHardwareRenderer; 5232 5233 if (hardwareRenderer != null) { 5234 if (mView != null) { 5235 hardwareRenderer.destroyHardwareResources(mView); 5236 } 5237 hardwareRenderer.destroy(true); 5238 hardwareRenderer.setRequested(false); 5239 5240 attachInfo.mHardwareRenderer = null; 5241 attachInfo.mHardwareAccelerated = false; 5242 } 5243 } 5244 5245 public void dispatchFinishInputConnection(InputConnection connection) { 5246 Message msg = mHandler.obtainMessage(MSG_FINISH_INPUT_CONNECTION, connection); 5247 mHandler.sendMessage(msg); 5248 } 5249 5250 public void dispatchResized(Rect frame, Rect overscanInsets, Rect contentInsets, 5251 Rect visibleInsets, boolean reportDraw, Configuration newConfig) { 5252 if (DEBUG_LAYOUT) Log.v(TAG, "Resizing " + this + ": frame=" + frame.toShortString() 5253 + " contentInsets=" + contentInsets.toShortString() 5254 + " visibleInsets=" + visibleInsets.toShortString() 5255 + " reportDraw=" + reportDraw); 5256 Message msg = mHandler.obtainMessage(reportDraw ? MSG_RESIZED_REPORT : MSG_RESIZED); 5257 if (mTranslator != null) { 5258 mTranslator.translateRectInScreenToAppWindow(frame); 5259 mTranslator.translateRectInScreenToAppWindow(overscanInsets); 5260 mTranslator.translateRectInScreenToAppWindow(contentInsets); 5261 mTranslator.translateRectInScreenToAppWindow(visibleInsets); 5262 } 5263 SomeArgs args = SomeArgs.obtain(); 5264 final boolean sameProcessCall = (Binder.getCallingPid() == android.os.Process.myPid()); 5265 args.arg1 = sameProcessCall ? new Rect(frame) : frame; 5266 args.arg2 = sameProcessCall ? new Rect(contentInsets) : contentInsets; 5267 args.arg3 = sameProcessCall ? new Rect(visibleInsets) : visibleInsets; 5268 args.arg4 = sameProcessCall && newConfig != null ? new Configuration(newConfig) : newConfig; 5269 args.arg5 = sameProcessCall ? new Rect(overscanInsets) : overscanInsets; 5270 msg.obj = args; 5271 mHandler.sendMessage(msg); 5272 } 5273 5274 public void dispatchMoved(int newX, int newY) { 5275 if (DEBUG_LAYOUT) Log.v(TAG, "Window moved " + this + ": newX=" + newX + " newY=" + newY); 5276 if (mTranslator != null) { 5277 PointF point = new PointF(newX, newY); 5278 mTranslator.translatePointInScreenToAppWindow(point); 5279 newX = (int) (point.x + 0.5); 5280 newY = (int) (point.y + 0.5); 5281 } 5282 Message msg = mHandler.obtainMessage(MSG_WINDOW_MOVED, newX, newY); 5283 mHandler.sendMessage(msg); 5284 } 5285 5286 /** 5287 * Represents a pending input event that is waiting in a queue. 5288 * 5289 * Input events are processed in serial order by the timestamp specified by 5290 * {@link InputEvent#getEventTimeNano()}. In general, the input dispatcher delivers 5291 * one input event to the application at a time and waits for the application 5292 * to finish handling it before delivering the next one. 5293 * 5294 * However, because the application or IME can synthesize and inject multiple 5295 * key events at a time without going through the input dispatcher, we end up 5296 * needing a queue on the application's side. 5297 */ 5298 private static final class QueuedInputEvent { 5299 public static final int FLAG_DELIVER_POST_IME = 1 << 0; 5300 public static final int FLAG_DEFERRED = 1 << 1; 5301 public static final int FLAG_FINISHED = 1 << 2; 5302 public static final int FLAG_FINISHED_HANDLED = 1 << 3; 5303 public static final int FLAG_RESYNTHESIZED = 1 << 4; 5304 5305 public QueuedInputEvent mNext; 5306 5307 public InputEvent mEvent; 5308 public InputEventReceiver mReceiver; 5309 public int mFlags; 5310 5311 public boolean shouldSkipIme() { 5312 if ((mFlags & FLAG_DELIVER_POST_IME) != 0) { 5313 return true; 5314 } 5315 return mEvent instanceof MotionEvent 5316 && mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER); 5317 } 5318 } 5319 5320 private QueuedInputEvent obtainQueuedInputEvent(InputEvent event, 5321 InputEventReceiver receiver, int flags) { 5322 QueuedInputEvent q = mQueuedInputEventPool; 5323 if (q != null) { 5324 mQueuedInputEventPoolSize -= 1; 5325 mQueuedInputEventPool = q.mNext; 5326 q.mNext = null; 5327 } else { 5328 q = new QueuedInputEvent(); 5329 } 5330 5331 q.mEvent = event; 5332 q.mReceiver = receiver; 5333 q.mFlags = flags; 5334 return q; 5335 } 5336 5337 private void recycleQueuedInputEvent(QueuedInputEvent q) { 5338 q.mEvent = null; 5339 q.mReceiver = null; 5340 5341 if (mQueuedInputEventPoolSize < MAX_QUEUED_INPUT_EVENT_POOL_SIZE) { 5342 mQueuedInputEventPoolSize += 1; 5343 q.mNext = mQueuedInputEventPool; 5344 mQueuedInputEventPool = q; 5345 } 5346 } 5347 5348 void enqueueInputEvent(InputEvent event) { 5349 enqueueInputEvent(event, null, 0, false); 5350 } 5351 5352 void enqueueInputEvent(InputEvent event, 5353 InputEventReceiver receiver, int flags, boolean processImmediately) { 5354 QueuedInputEvent q = obtainQueuedInputEvent(event, receiver, flags); 5355 5356 // Always enqueue the input event in order, regardless of its time stamp. 5357 // We do this because the application or the IME may inject key events 5358 // in response to touch events and we want to ensure that the injected keys 5359 // are processed in the order they were received and we cannot trust that 5360 // the time stamp of injected events are monotonic. 5361 QueuedInputEvent last = mPendingInputEventTail; 5362 if (last == null) { 5363 mPendingInputEventHead = q; 5364 mPendingInputEventTail = q; 5365 } else { 5366 last.mNext = q; 5367 mPendingInputEventTail = q; 5368 } 5369 mPendingInputEventCount += 1; 5370 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 5371 mPendingInputEventCount); 5372 5373 if (processImmediately) { 5374 doProcessInputEvents(); 5375 } else { 5376 scheduleProcessInputEvents(); 5377 } 5378 } 5379 5380 private void scheduleProcessInputEvents() { 5381 if (!mProcessInputEventsScheduled) { 5382 mProcessInputEventsScheduled = true; 5383 Message msg = mHandler.obtainMessage(MSG_PROCESS_INPUT_EVENTS); 5384 msg.setAsynchronous(true); 5385 mHandler.sendMessage(msg); 5386 } 5387 } 5388 5389 void doProcessInputEvents() { 5390 // Deliver all pending input events in the queue. 5391 while (mPendingInputEventHead != null) { 5392 QueuedInputEvent q = mPendingInputEventHead; 5393 mPendingInputEventHead = q.mNext; 5394 if (mPendingInputEventHead == null) { 5395 mPendingInputEventTail = null; 5396 } 5397 q.mNext = null; 5398 5399 mPendingInputEventCount -= 1; 5400 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 5401 mPendingInputEventCount); 5402 5403 deliverInputEvent(q); 5404 } 5405 5406 // We are done processing all input events that we can process right now 5407 // so we can clear the pending flag immediately. 5408 if (mProcessInputEventsScheduled) { 5409 mProcessInputEventsScheduled = false; 5410 mHandler.removeMessages(MSG_PROCESS_INPUT_EVENTS); 5411 } 5412 } 5413 5414 private void deliverInputEvent(QueuedInputEvent q) { 5415 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "deliverInputEvent"); 5416 try { 5417 if (mInputEventConsistencyVerifier != null) { 5418 mInputEventConsistencyVerifier.onInputEvent(q.mEvent, 0); 5419 } 5420 5421 InputStage stage = q.shouldSkipIme() ? mFirstPostImeInputStage : mFirstInputStage; 5422 if (stage != null) { 5423 stage.deliver(q); 5424 } else { 5425 finishInputEvent(q); 5426 } 5427 } finally { 5428 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 5429 } 5430 } 5431 5432 private void finishInputEvent(QueuedInputEvent q) { 5433 if (q.mReceiver != null) { 5434 boolean handled = (q.mFlags & QueuedInputEvent.FLAG_FINISHED_HANDLED) != 0; 5435 q.mReceiver.finishInputEvent(q.mEvent, handled); 5436 } else { 5437 q.mEvent.recycleIfNeededAfterDispatch(); 5438 } 5439 5440 recycleQueuedInputEvent(q); 5441 } 5442 5443 static boolean isTerminalInputEvent(InputEvent event) { 5444 if (event instanceof KeyEvent) { 5445 final KeyEvent keyEvent = (KeyEvent)event; 5446 return keyEvent.getAction() == KeyEvent.ACTION_UP; 5447 } else { 5448 final MotionEvent motionEvent = (MotionEvent)event; 5449 final int action = motionEvent.getAction(); 5450 return action == MotionEvent.ACTION_UP 5451 || action == MotionEvent.ACTION_CANCEL 5452 || action == MotionEvent.ACTION_HOVER_EXIT; 5453 } 5454 } 5455 5456 void scheduleConsumeBatchedInput() { 5457 if (!mConsumeBatchedInputScheduled) { 5458 mConsumeBatchedInputScheduled = true; 5459 mChoreographer.postCallback(Choreographer.CALLBACK_INPUT, 5460 mConsumedBatchedInputRunnable, null); 5461 } 5462 } 5463 5464 void unscheduleConsumeBatchedInput() { 5465 if (mConsumeBatchedInputScheduled) { 5466 mConsumeBatchedInputScheduled = false; 5467 mChoreographer.removeCallbacks(Choreographer.CALLBACK_INPUT, 5468 mConsumedBatchedInputRunnable, null); 5469 } 5470 } 5471 5472 void doConsumeBatchedInput(long frameTimeNanos) { 5473 if (mConsumeBatchedInputScheduled) { 5474 mConsumeBatchedInputScheduled = false; 5475 if (mInputEventReceiver != null) { 5476 mInputEventReceiver.consumeBatchedInputEvents(frameTimeNanos); 5477 } 5478 doProcessInputEvents(); 5479 } 5480 } 5481 5482 final class TraversalRunnable implements Runnable { 5483 @Override 5484 public void run() { 5485 doTraversal(); 5486 } 5487 } 5488 final TraversalRunnable mTraversalRunnable = new TraversalRunnable(); 5489 5490 final class WindowInputEventReceiver extends InputEventReceiver { 5491 public WindowInputEventReceiver(InputChannel inputChannel, Looper looper) { 5492 super(inputChannel, looper); 5493 } 5494 5495 @Override 5496 public void onInputEvent(InputEvent event) { 5497 enqueueInputEvent(event, this, 0, true); 5498 } 5499 5500 @Override 5501 public void onBatchedInputEventPending() { 5502 scheduleConsumeBatchedInput(); 5503 } 5504 5505 @Override 5506 public void dispose() { 5507 unscheduleConsumeBatchedInput(); 5508 super.dispose(); 5509 } 5510 } 5511 WindowInputEventReceiver mInputEventReceiver; 5512 5513 final class ConsumeBatchedInputRunnable implements Runnable { 5514 @Override 5515 public void run() { 5516 doConsumeBatchedInput(mChoreographer.getFrameTimeNanos()); 5517 } 5518 } 5519 final ConsumeBatchedInputRunnable mConsumedBatchedInputRunnable = 5520 new ConsumeBatchedInputRunnable(); 5521 boolean mConsumeBatchedInputScheduled; 5522 5523 final class InvalidateOnAnimationRunnable implements Runnable { 5524 private boolean mPosted; 5525 private ArrayList<View> mViews = new ArrayList<View>(); 5526 private ArrayList<AttachInfo.InvalidateInfo> mViewRects = 5527 new ArrayList<AttachInfo.InvalidateInfo>(); 5528 private View[] mTempViews; 5529 private AttachInfo.InvalidateInfo[] mTempViewRects; 5530 5531 public void addView(View view) { 5532 synchronized (this) { 5533 mViews.add(view); 5534 postIfNeededLocked(); 5535 } 5536 } 5537 5538 public void addViewRect(AttachInfo.InvalidateInfo info) { 5539 synchronized (this) { 5540 mViewRects.add(info); 5541 postIfNeededLocked(); 5542 } 5543 } 5544 5545 public void removeView(View view) { 5546 synchronized (this) { 5547 mViews.remove(view); 5548 5549 for (int i = mViewRects.size(); i-- > 0; ) { 5550 AttachInfo.InvalidateInfo info = mViewRects.get(i); 5551 if (info.target == view) { 5552 mViewRects.remove(i); 5553 info.recycle(); 5554 } 5555 } 5556 5557 if (mPosted && mViews.isEmpty() && mViewRects.isEmpty()) { 5558 mChoreographer.removeCallbacks(Choreographer.CALLBACK_ANIMATION, this, null); 5559 mPosted = false; 5560 } 5561 } 5562 } 5563 5564 @Override 5565 public void run() { 5566 final int viewCount; 5567 final int viewRectCount; 5568 synchronized (this) { 5569 mPosted = false; 5570 5571 viewCount = mViews.size(); 5572 if (viewCount != 0) { 5573 mTempViews = mViews.toArray(mTempViews != null 5574 ? mTempViews : new View[viewCount]); 5575 mViews.clear(); 5576 } 5577 5578 viewRectCount = mViewRects.size(); 5579 if (viewRectCount != 0) { 5580 mTempViewRects = mViewRects.toArray(mTempViewRects != null 5581 ? mTempViewRects : new AttachInfo.InvalidateInfo[viewRectCount]); 5582 mViewRects.clear(); 5583 } 5584 } 5585 5586 for (int i = 0; i < viewCount; i++) { 5587 mTempViews[i].invalidate(); 5588 mTempViews[i] = null; 5589 } 5590 5591 for (int i = 0; i < viewRectCount; i++) { 5592 final View.AttachInfo.InvalidateInfo info = mTempViewRects[i]; 5593 info.target.invalidate(info.left, info.top, info.right, info.bottom); 5594 info.recycle(); 5595 } 5596 } 5597 5598 private void postIfNeededLocked() { 5599 if (!mPosted) { 5600 mChoreographer.postCallback(Choreographer.CALLBACK_ANIMATION, this, null); 5601 mPosted = true; 5602 } 5603 } 5604 } 5605 final InvalidateOnAnimationRunnable mInvalidateOnAnimationRunnable = 5606 new InvalidateOnAnimationRunnable(); 5607 5608 public void dispatchInvalidateDelayed(View view, long delayMilliseconds) { 5609 Message msg = mHandler.obtainMessage(MSG_INVALIDATE, view); 5610 mHandler.sendMessageDelayed(msg, delayMilliseconds); 5611 } 5612 5613 public void dispatchInvalidateRectDelayed(AttachInfo.InvalidateInfo info, 5614 long delayMilliseconds) { 5615 final Message msg = mHandler.obtainMessage(MSG_INVALIDATE_RECT, info); 5616 mHandler.sendMessageDelayed(msg, delayMilliseconds); 5617 } 5618 5619 public void dispatchInvalidateOnAnimation(View view) { 5620 mInvalidateOnAnimationRunnable.addView(view); 5621 } 5622 5623 public void dispatchInvalidateRectOnAnimation(AttachInfo.InvalidateInfo info) { 5624 mInvalidateOnAnimationRunnable.addViewRect(info); 5625 } 5626 5627 public void enqueueDisplayList(DisplayList displayList) { 5628 mDisplayLists.add(displayList); 5629 } 5630 5631 public void cancelInvalidate(View view) { 5632 mHandler.removeMessages(MSG_INVALIDATE, view); 5633 // fixme: might leak the AttachInfo.InvalidateInfo objects instead of returning 5634 // them to the pool 5635 mHandler.removeMessages(MSG_INVALIDATE_RECT, view); 5636 mInvalidateOnAnimationRunnable.removeView(view); 5637 } 5638 5639 public void dispatchKey(KeyEvent event) { 5640 Message msg = mHandler.obtainMessage(MSG_DISPATCH_KEY, event); 5641 msg.setAsynchronous(true); 5642 mHandler.sendMessage(msg); 5643 } 5644 5645 public void dispatchKeyFromIme(KeyEvent event) { 5646 Message msg = mHandler.obtainMessage(MSG_DISPATCH_KEY_FROM_IME, event); 5647 msg.setAsynchronous(true); 5648 mHandler.sendMessage(msg); 5649 } 5650 5651 public void dispatchUnhandledKey(KeyEvent event) { 5652 if ((event.getFlags() & KeyEvent.FLAG_FALLBACK) == 0) { 5653 final KeyCharacterMap kcm = event.getKeyCharacterMap(); 5654 final int keyCode = event.getKeyCode(); 5655 final int metaState = event.getMetaState(); 5656 5657 // Check for fallback actions specified by the key character map. 5658 KeyCharacterMap.FallbackAction fallbackAction = 5659 kcm.getFallbackAction(keyCode, metaState); 5660 if (fallbackAction != null) { 5661 final int flags = event.getFlags() | KeyEvent.FLAG_FALLBACK; 5662 KeyEvent fallbackEvent = KeyEvent.obtain( 5663 event.getDownTime(), event.getEventTime(), 5664 event.getAction(), fallbackAction.keyCode, 5665 event.getRepeatCount(), fallbackAction.metaState, 5666 event.getDeviceId(), event.getScanCode(), 5667 flags, event.getSource(), null); 5668 fallbackAction.recycle(); 5669 5670 dispatchKey(fallbackEvent); 5671 } 5672 } 5673 } 5674 5675 public void dispatchAppVisibility(boolean visible) { 5676 Message msg = mHandler.obtainMessage(MSG_DISPATCH_APP_VISIBILITY); 5677 msg.arg1 = visible ? 1 : 0; 5678 mHandler.sendMessage(msg); 5679 } 5680 5681 public void dispatchScreenStateChange(boolean on) { 5682 Message msg = mHandler.obtainMessage(MSG_DISPATCH_SCREEN_STATE); 5683 msg.arg1 = on ? 1 : 0; 5684 mHandler.sendMessage(msg); 5685 } 5686 5687 public void dispatchGetNewSurface() { 5688 Message msg = mHandler.obtainMessage(MSG_DISPATCH_GET_NEW_SURFACE); 5689 mHandler.sendMessage(msg); 5690 } 5691 5692 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 5693 Message msg = Message.obtain(); 5694 msg.what = MSG_WINDOW_FOCUS_CHANGED; 5695 msg.arg1 = hasFocus ? 1 : 0; 5696 msg.arg2 = inTouchMode ? 1 : 0; 5697 mHandler.sendMessage(msg); 5698 } 5699 5700 public void dispatchCloseSystemDialogs(String reason) { 5701 Message msg = Message.obtain(); 5702 msg.what = MSG_CLOSE_SYSTEM_DIALOGS; 5703 msg.obj = reason; 5704 mHandler.sendMessage(msg); 5705 } 5706 5707 public void dispatchDragEvent(DragEvent event) { 5708 final int what; 5709 if (event.getAction() == DragEvent.ACTION_DRAG_LOCATION) { 5710 what = MSG_DISPATCH_DRAG_LOCATION_EVENT; 5711 mHandler.removeMessages(what); 5712 } else { 5713 what = MSG_DISPATCH_DRAG_EVENT; 5714 } 5715 Message msg = mHandler.obtainMessage(what, event); 5716 mHandler.sendMessage(msg); 5717 } 5718 5719 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 5720 int localValue, int localChanges) { 5721 SystemUiVisibilityInfo args = new SystemUiVisibilityInfo(); 5722 args.seq = seq; 5723 args.globalVisibility = globalVisibility; 5724 args.localValue = localValue; 5725 args.localChanges = localChanges; 5726 mHandler.sendMessage(mHandler.obtainMessage(MSG_DISPATCH_SYSTEM_UI_VISIBILITY, args)); 5727 } 5728 5729 public void dispatchDoneAnimating() { 5730 mHandler.sendEmptyMessage(MSG_DISPATCH_DONE_ANIMATING); 5731 } 5732 5733 public void dispatchCheckFocus() { 5734 if (!mHandler.hasMessages(MSG_CHECK_FOCUS)) { 5735 // This will result in a call to checkFocus() below. 5736 mHandler.sendEmptyMessage(MSG_CHECK_FOCUS); 5737 } 5738 } 5739 5740 /** 5741 * Post a callback to send a 5742 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 5743 * This event is send at most once every 5744 * {@link ViewConfiguration#getSendRecurringAccessibilityEventsInterval()}. 5745 */ 5746 private void postSendWindowContentChangedCallback(View source) { 5747 if (mSendWindowContentChangedAccessibilityEvent == null) { 5748 mSendWindowContentChangedAccessibilityEvent = 5749 new SendWindowContentChangedAccessibilityEvent(); 5750 } 5751 mSendWindowContentChangedAccessibilityEvent.runOrPost(source); 5752 } 5753 5754 /** 5755 * Remove a posted callback to send a 5756 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 5757 */ 5758 private void removeSendWindowContentChangedCallback() { 5759 if (mSendWindowContentChangedAccessibilityEvent != null) { 5760 mHandler.removeCallbacks(mSendWindowContentChangedAccessibilityEvent); 5761 } 5762 } 5763 5764 public boolean showContextMenuForChild(View originalView) { 5765 return false; 5766 } 5767 5768 public ActionMode startActionModeForChild(View originalView, ActionMode.Callback callback) { 5769 return null; 5770 } 5771 5772 public void createContextMenu(ContextMenu menu) { 5773 } 5774 5775 public void childDrawableStateChanged(View child) { 5776 } 5777 5778 public boolean requestSendAccessibilityEvent(View child, AccessibilityEvent event) { 5779 if (mView == null) { 5780 return false; 5781 } 5782 // Intercept accessibility focus events fired by virtual nodes to keep 5783 // track of accessibility focus position in such nodes. 5784 final int eventType = event.getEventType(); 5785 switch (eventType) { 5786 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUSED: { 5787 final long sourceNodeId = event.getSourceNodeId(); 5788 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 5789 sourceNodeId); 5790 View source = mView.findViewByAccessibilityId(accessibilityViewId); 5791 if (source != null) { 5792 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 5793 if (provider != null) { 5794 AccessibilityNodeInfo node = provider.createAccessibilityNodeInfo( 5795 AccessibilityNodeInfo.getVirtualDescendantId(sourceNodeId)); 5796 setAccessibilityFocus(source, node); 5797 } 5798 } 5799 } break; 5800 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUS_CLEARED: { 5801 final long sourceNodeId = event.getSourceNodeId(); 5802 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 5803 sourceNodeId); 5804 View source = mView.findViewByAccessibilityId(accessibilityViewId); 5805 if (source != null) { 5806 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 5807 if (provider != null) { 5808 setAccessibilityFocus(null, null); 5809 } 5810 } 5811 } break; 5812 } 5813 mAccessibilityManager.sendAccessibilityEvent(event); 5814 return true; 5815 } 5816 5817 @Override 5818 public void childAccessibilityStateChanged(View child) { 5819 postSendWindowContentChangedCallback(child); 5820 } 5821 5822 @Override 5823 public boolean canResolveLayoutDirection() { 5824 return true; 5825 } 5826 5827 @Override 5828 public boolean isLayoutDirectionResolved() { 5829 return true; 5830 } 5831 5832 @Override 5833 public int getLayoutDirection() { 5834 return View.LAYOUT_DIRECTION_RESOLVED_DEFAULT; 5835 } 5836 5837 @Override 5838 public boolean canResolveTextDirection() { 5839 return true; 5840 } 5841 5842 @Override 5843 public boolean isTextDirectionResolved() { 5844 return true; 5845 } 5846 5847 @Override 5848 public int getTextDirection() { 5849 return View.TEXT_DIRECTION_RESOLVED_DEFAULT; 5850 } 5851 5852 @Override 5853 public boolean canResolveTextAlignment() { 5854 return true; 5855 } 5856 5857 @Override 5858 public boolean isTextAlignmentResolved() { 5859 return true; 5860 } 5861 5862 @Override 5863 public int getTextAlignment() { 5864 return View.TEXT_ALIGNMENT_RESOLVED_DEFAULT; 5865 } 5866 5867 private View getCommonPredecessor(View first, View second) { 5868 if (mAttachInfo != null) { 5869 if (mTempHashSet == null) { 5870 mTempHashSet = new HashSet<View>(); 5871 } 5872 HashSet<View> seen = mTempHashSet; 5873 seen.clear(); 5874 View firstCurrent = first; 5875 while (firstCurrent != null) { 5876 seen.add(firstCurrent); 5877 ViewParent firstCurrentParent = firstCurrent.mParent; 5878 if (firstCurrentParent instanceof View) { 5879 firstCurrent = (View) firstCurrentParent; 5880 } else { 5881 firstCurrent = null; 5882 } 5883 } 5884 View secondCurrent = second; 5885 while (secondCurrent != null) { 5886 if (seen.contains(secondCurrent)) { 5887 seen.clear(); 5888 return secondCurrent; 5889 } 5890 ViewParent secondCurrentParent = secondCurrent.mParent; 5891 if (secondCurrentParent instanceof View) { 5892 secondCurrent = (View) secondCurrentParent; 5893 } else { 5894 secondCurrent = null; 5895 } 5896 } 5897 seen.clear(); 5898 } 5899 return null; 5900 } 5901 5902 void checkThread() { 5903 if (mThread != Thread.currentThread()) { 5904 throw new CalledFromWrongThreadException( 5905 "Only the original thread that created a view hierarchy can touch its views."); 5906 } 5907 } 5908 5909 public void requestDisallowInterceptTouchEvent(boolean disallowIntercept) { 5910 // ViewAncestor never intercepts touch event, so this can be a no-op 5911 } 5912 5913 public boolean requestChildRectangleOnScreen(View child, Rect rectangle, boolean immediate) { 5914 final boolean scrolled = scrollToRectOrFocus(rectangle, immediate); 5915 if (rectangle != null) { 5916 mTempRect.set(rectangle); 5917 mTempRect.offset(0, -mCurScrollY); 5918 mTempRect.offset(mAttachInfo.mWindowLeft, mAttachInfo.mWindowTop); 5919 try { 5920 mWindowSession.onRectangleOnScreenRequested(mWindow, mTempRect, immediate); 5921 } catch (RemoteException re) { 5922 /* ignore */ 5923 } 5924 } 5925 return scrolled; 5926 } 5927 5928 public void childHasTransientStateChanged(View child, boolean hasTransientState) { 5929 // Do nothing. 5930 } 5931 5932 class TakenSurfaceHolder extends BaseSurfaceHolder { 5933 @Override 5934 public boolean onAllowLockCanvas() { 5935 return mDrawingAllowed; 5936 } 5937 5938 @Override 5939 public void onRelayoutContainer() { 5940 // Not currently interesting -- from changing between fixed and layout size. 5941 } 5942 5943 public void setFormat(int format) { 5944 ((RootViewSurfaceTaker)mView).setSurfaceFormat(format); 5945 } 5946 5947 public void setType(int type) { 5948 ((RootViewSurfaceTaker)mView).setSurfaceType(type); 5949 } 5950 5951 @Override 5952 public void onUpdateSurface() { 5953 // We take care of format and type changes on our own. 5954 throw new IllegalStateException("Shouldn't be here"); 5955 } 5956 5957 public boolean isCreating() { 5958 return mIsCreating; 5959 } 5960 5961 @Override 5962 public void setFixedSize(int width, int height) { 5963 throw new UnsupportedOperationException( 5964 "Currently only support sizing from layout"); 5965 } 5966 5967 public void setKeepScreenOn(boolean screenOn) { 5968 ((RootViewSurfaceTaker)mView).setSurfaceKeepScreenOn(screenOn); 5969 } 5970 } 5971 5972 static class W extends IWindow.Stub { 5973 private final WeakReference<ViewRootImpl> mViewAncestor; 5974 private final IWindowSession mWindowSession; 5975 5976 W(ViewRootImpl viewAncestor) { 5977 mViewAncestor = new WeakReference<ViewRootImpl>(viewAncestor); 5978 mWindowSession = viewAncestor.mWindowSession; 5979 } 5980 5981 public void resized(Rect frame, Rect overscanInsets, Rect contentInsets, 5982 Rect visibleInsets, boolean reportDraw, Configuration newConfig) { 5983 final ViewRootImpl viewAncestor = mViewAncestor.get(); 5984 if (viewAncestor != null) { 5985 viewAncestor.dispatchResized(frame, overscanInsets, contentInsets, 5986 visibleInsets, reportDraw, newConfig); 5987 } 5988 } 5989 5990 @Override 5991 public void moved(int newX, int newY) { 5992 final ViewRootImpl viewAncestor = mViewAncestor.get(); 5993 if (viewAncestor != null) { 5994 viewAncestor.dispatchMoved(newX, newY); 5995 } 5996 } 5997 5998 public void dispatchAppVisibility(boolean visible) { 5999 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6000 if (viewAncestor != null) { 6001 viewAncestor.dispatchAppVisibility(visible); 6002 } 6003 } 6004 6005 public void dispatchScreenState(boolean on) { 6006 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6007 if (viewAncestor != null) { 6008 viewAncestor.dispatchScreenStateChange(on); 6009 } 6010 } 6011 6012 public void dispatchGetNewSurface() { 6013 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6014 if (viewAncestor != null) { 6015 viewAncestor.dispatchGetNewSurface(); 6016 } 6017 } 6018 6019 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 6020 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6021 if (viewAncestor != null) { 6022 viewAncestor.windowFocusChanged(hasFocus, inTouchMode); 6023 } 6024 } 6025 6026 private static int checkCallingPermission(String permission) { 6027 try { 6028 return ActivityManagerNative.getDefault().checkPermission( 6029 permission, Binder.getCallingPid(), Binder.getCallingUid()); 6030 } catch (RemoteException e) { 6031 return PackageManager.PERMISSION_DENIED; 6032 } 6033 } 6034 6035 public void executeCommand(String command, String parameters, ParcelFileDescriptor out) { 6036 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6037 if (viewAncestor != null) { 6038 final View view = viewAncestor.mView; 6039 if (view != null) { 6040 if (checkCallingPermission(Manifest.permission.DUMP) != 6041 PackageManager.PERMISSION_GRANTED) { 6042 throw new SecurityException("Insufficient permissions to invoke" 6043 + " executeCommand() from pid=" + Binder.getCallingPid() 6044 + ", uid=" + Binder.getCallingUid()); 6045 } 6046 6047 OutputStream clientStream = null; 6048 try { 6049 clientStream = new ParcelFileDescriptor.AutoCloseOutputStream(out); 6050 ViewDebug.dispatchCommand(view, command, parameters, clientStream); 6051 } catch (IOException e) { 6052 e.printStackTrace(); 6053 } finally { 6054 if (clientStream != null) { 6055 try { 6056 clientStream.close(); 6057 } catch (IOException e) { 6058 e.printStackTrace(); 6059 } 6060 } 6061 } 6062 } 6063 } 6064 } 6065 6066 public void closeSystemDialogs(String reason) { 6067 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6068 if (viewAncestor != null) { 6069 viewAncestor.dispatchCloseSystemDialogs(reason); 6070 } 6071 } 6072 6073 public void dispatchWallpaperOffsets(float x, float y, float xStep, float yStep, 6074 boolean sync) { 6075 if (sync) { 6076 try { 6077 mWindowSession.wallpaperOffsetsComplete(asBinder()); 6078 } catch (RemoteException e) { 6079 } 6080 } 6081 } 6082 6083 public void dispatchWallpaperCommand(String action, int x, int y, 6084 int z, Bundle extras, boolean sync) { 6085 if (sync) { 6086 try { 6087 mWindowSession.wallpaperCommandComplete(asBinder(), null); 6088 } catch (RemoteException e) { 6089 } 6090 } 6091 } 6092 6093 /* Drag/drop */ 6094 public void dispatchDragEvent(DragEvent event) { 6095 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6096 if (viewAncestor != null) { 6097 viewAncestor.dispatchDragEvent(event); 6098 } 6099 } 6100 6101 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 6102 int localValue, int localChanges) { 6103 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6104 if (viewAncestor != null) { 6105 viewAncestor.dispatchSystemUiVisibilityChanged(seq, globalVisibility, 6106 localValue, localChanges); 6107 } 6108 } 6109 6110 public void doneAnimating() { 6111 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6112 if (viewAncestor != null) { 6113 viewAncestor.dispatchDoneAnimating(); 6114 } 6115 } 6116 } 6117 6118 public static final class CalledFromWrongThreadException extends AndroidRuntimeException { 6119 public CalledFromWrongThreadException(String msg) { 6120 super(msg); 6121 } 6122 } 6123 6124 private SurfaceHolder mHolder = new SurfaceHolder() { 6125 // we only need a SurfaceHolder for opengl. it would be nice 6126 // to implement everything else though, especially the callback 6127 // support (opengl doesn't make use of it right now, but eventually 6128 // will). 6129 public Surface getSurface() { 6130 return mSurface; 6131 } 6132 6133 public boolean isCreating() { 6134 return false; 6135 } 6136 6137 public void addCallback(Callback callback) { 6138 } 6139 6140 public void removeCallback(Callback callback) { 6141 } 6142 6143 public void setFixedSize(int width, int height) { 6144 } 6145 6146 public void setSizeFromLayout() { 6147 } 6148 6149 public void setFormat(int format) { 6150 } 6151 6152 public void setType(int type) { 6153 } 6154 6155 public void setKeepScreenOn(boolean screenOn) { 6156 } 6157 6158 public Canvas lockCanvas() { 6159 return null; 6160 } 6161 6162 public Canvas lockCanvas(Rect dirty) { 6163 return null; 6164 } 6165 6166 public void unlockCanvasAndPost(Canvas canvas) { 6167 } 6168 public Rect getSurfaceFrame() { 6169 return null; 6170 } 6171 }; 6172 6173 static RunQueue getRunQueue() { 6174 RunQueue rq = sRunQueues.get(); 6175 if (rq != null) { 6176 return rq; 6177 } 6178 rq = new RunQueue(); 6179 sRunQueues.set(rq); 6180 return rq; 6181 } 6182 6183 /** 6184 * The run queue is used to enqueue pending work from Views when no Handler is 6185 * attached. The work is executed during the next call to performTraversals on 6186 * the thread. 6187 * @hide 6188 */ 6189 static final class RunQueue { 6190 private final ArrayList<HandlerAction> mActions = new ArrayList<HandlerAction>(); 6191 6192 void post(Runnable action) { 6193 postDelayed(action, 0); 6194 } 6195 6196 void postDelayed(Runnable action, long delayMillis) { 6197 HandlerAction handlerAction = new HandlerAction(); 6198 handlerAction.action = action; 6199 handlerAction.delay = delayMillis; 6200 6201 synchronized (mActions) { 6202 mActions.add(handlerAction); 6203 } 6204 } 6205 6206 void removeCallbacks(Runnable action) { 6207 final HandlerAction handlerAction = new HandlerAction(); 6208 handlerAction.action = action; 6209 6210 synchronized (mActions) { 6211 final ArrayList<HandlerAction> actions = mActions; 6212 6213 while (actions.remove(handlerAction)) { 6214 // Keep going 6215 } 6216 } 6217 } 6218 6219 void executeActions(Handler handler) { 6220 synchronized (mActions) { 6221 final ArrayList<HandlerAction> actions = mActions; 6222 final int count = actions.size(); 6223 6224 for (int i = 0; i < count; i++) { 6225 final HandlerAction handlerAction = actions.get(i); 6226 handler.postDelayed(handlerAction.action, handlerAction.delay); 6227 } 6228 6229 actions.clear(); 6230 } 6231 } 6232 6233 private static class HandlerAction { 6234 Runnable action; 6235 long delay; 6236 6237 @Override 6238 public boolean equals(Object o) { 6239 if (this == o) return true; 6240 if (o == null || getClass() != o.getClass()) return false; 6241 6242 HandlerAction that = (HandlerAction) o; 6243 return !(action != null ? !action.equals(that.action) : that.action != null); 6244 6245 } 6246 6247 @Override 6248 public int hashCode() { 6249 int result = action != null ? action.hashCode() : 0; 6250 result = 31 * result + (int) (delay ^ (delay >>> 32)); 6251 return result; 6252 } 6253 } 6254 } 6255 6256 /** 6257 * Class for managing the accessibility interaction connection 6258 * based on the global accessibility state. 6259 */ 6260 final class AccessibilityInteractionConnectionManager 6261 implements AccessibilityStateChangeListener { 6262 public void onAccessibilityStateChanged(boolean enabled) { 6263 if (enabled) { 6264 ensureConnection(); 6265 if (mAttachInfo != null && mAttachInfo.mHasWindowFocus) { 6266 mView.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 6267 View focusedView = mView.findFocus(); 6268 if (focusedView != null && focusedView != mView) { 6269 focusedView.sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_FOCUSED); 6270 } 6271 } 6272 } else { 6273 ensureNoConnection(); 6274 mHandler.obtainMessage(MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST).sendToTarget(); 6275 } 6276 } 6277 6278 public void ensureConnection() { 6279 if (mAttachInfo != null) { 6280 final boolean registered = 6281 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED; 6282 if (!registered) { 6283 mAttachInfo.mAccessibilityWindowId = 6284 mAccessibilityManager.addAccessibilityInteractionConnection(mWindow, 6285 new AccessibilityInteractionConnection(ViewRootImpl.this)); 6286 } 6287 } 6288 } 6289 6290 public void ensureNoConnection() { 6291 final boolean registered = 6292 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED; 6293 if (registered) { 6294 mAttachInfo.mAccessibilityWindowId = AccessibilityNodeInfo.UNDEFINED; 6295 mAccessibilityManager.removeAccessibilityInteractionConnection(mWindow); 6296 } 6297 } 6298 } 6299 6300 /** 6301 * This class is an interface this ViewAncestor provides to the 6302 * AccessibilityManagerService to the latter can interact with 6303 * the view hierarchy in this ViewAncestor. 6304 */ 6305 static final class AccessibilityInteractionConnection 6306 extends IAccessibilityInteractionConnection.Stub { 6307 private final WeakReference<ViewRootImpl> mViewRootImpl; 6308 6309 AccessibilityInteractionConnection(ViewRootImpl viewRootImpl) { 6310 mViewRootImpl = new WeakReference<ViewRootImpl>(viewRootImpl); 6311 } 6312 6313 @Override 6314 public void findAccessibilityNodeInfoByAccessibilityId(long accessibilityNodeId, 6315 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 6316 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6317 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6318 if (viewRootImpl != null && viewRootImpl.mView != null) { 6319 viewRootImpl.getAccessibilityInteractionController() 6320 .findAccessibilityNodeInfoByAccessibilityIdClientThread(accessibilityNodeId, 6321 interactionId, callback, flags, interrogatingPid, interrogatingTid, 6322 spec); 6323 } else { 6324 // We cannot make the call and notify the caller so it does not wait. 6325 try { 6326 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 6327 } catch (RemoteException re) { 6328 /* best effort - ignore */ 6329 } 6330 } 6331 } 6332 6333 @Override 6334 public void performAccessibilityAction(long accessibilityNodeId, int action, 6335 Bundle arguments, int interactionId, 6336 IAccessibilityInteractionConnectionCallback callback, int flags, 6337 int interogatingPid, long interrogatingTid) { 6338 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6339 if (viewRootImpl != null && viewRootImpl.mView != null) { 6340 viewRootImpl.getAccessibilityInteractionController() 6341 .performAccessibilityActionClientThread(accessibilityNodeId, action, arguments, 6342 interactionId, callback, flags, interogatingPid, interrogatingTid); 6343 } else { 6344 // We cannot make the call and notify the caller so it does not wait. 6345 try { 6346 callback.setPerformAccessibilityActionResult(false, interactionId); 6347 } catch (RemoteException re) { 6348 /* best effort - ignore */ 6349 } 6350 } 6351 } 6352 6353 @Override 6354 public void findAccessibilityNodeInfosByViewId(long accessibilityNodeId, 6355 String viewId, int interactionId, 6356 IAccessibilityInteractionConnectionCallback callback, int flags, 6357 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6358 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6359 if (viewRootImpl != null && viewRootImpl.mView != null) { 6360 viewRootImpl.getAccessibilityInteractionController() 6361 .findAccessibilityNodeInfosByViewIdClientThread(accessibilityNodeId, 6362 viewId, interactionId, callback, flags, interrogatingPid, 6363 interrogatingTid, spec); 6364 } else { 6365 // We cannot make the call and notify the caller so it does not wait. 6366 try { 6367 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6368 } catch (RemoteException re) { 6369 /* best effort - ignore */ 6370 } 6371 } 6372 } 6373 6374 @Override 6375 public void findAccessibilityNodeInfosByText(long accessibilityNodeId, String text, 6376 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 6377 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6378 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6379 if (viewRootImpl != null && viewRootImpl.mView != null) { 6380 viewRootImpl.getAccessibilityInteractionController() 6381 .findAccessibilityNodeInfosByTextClientThread(accessibilityNodeId, text, 6382 interactionId, callback, flags, interrogatingPid, interrogatingTid, 6383 spec); 6384 } else { 6385 // We cannot make the call and notify the caller so it does not wait. 6386 try { 6387 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 6388 } catch (RemoteException re) { 6389 /* best effort - ignore */ 6390 } 6391 } 6392 } 6393 6394 @Override 6395 public void findFocus(long accessibilityNodeId, int focusType, int interactionId, 6396 IAccessibilityInteractionConnectionCallback callback, int flags, 6397 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6398 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6399 if (viewRootImpl != null && viewRootImpl.mView != null) { 6400 viewRootImpl.getAccessibilityInteractionController() 6401 .findFocusClientThread(accessibilityNodeId, focusType, interactionId, callback, 6402 flags, interrogatingPid, interrogatingTid, spec); 6403 } else { 6404 // We cannot make the call and notify the caller so it does not wait. 6405 try { 6406 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6407 } catch (RemoteException re) { 6408 /* best effort - ignore */ 6409 } 6410 } 6411 } 6412 6413 @Override 6414 public void focusSearch(long accessibilityNodeId, int direction, int interactionId, 6415 IAccessibilityInteractionConnectionCallback callback, int flags, 6416 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6417 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6418 if (viewRootImpl != null && viewRootImpl.mView != null) { 6419 viewRootImpl.getAccessibilityInteractionController() 6420 .focusSearchClientThread(accessibilityNodeId, direction, interactionId, 6421 callback, flags, interrogatingPid, interrogatingTid, spec); 6422 } else { 6423 // We cannot make the call and notify the caller so it does not wait. 6424 try { 6425 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6426 } catch (RemoteException re) { 6427 /* best effort - ignore */ 6428 } 6429 } 6430 } 6431 } 6432 6433 private class SendWindowContentChangedAccessibilityEvent implements Runnable { 6434 public View mSource; 6435 public long mLastEventTimeMillis; 6436 6437 public void run() { 6438 mLastEventTimeMillis = SystemClock.uptimeMillis(); 6439 AccessibilityEvent event = AccessibilityEvent.obtain(); 6440 event.setEventType(AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED); 6441 event.setContentChangeType(AccessibilityEvent.CONTENT_CHANGE_TYPE_SUBTREE); 6442 mSource.sendAccessibilityEventUnchecked(event); 6443 mSource.resetSubtreeAccessibilityStateChanged(); 6444 mSource = null; 6445 } 6446 6447 public void runOrPost(View source) { 6448 if (mSource != null) { 6449 // If there is no common predecessor, then mSource points to 6450 // a removed view, hence in this case always prefer the source. 6451 View predecessor = getCommonPredecessor(mSource, source); 6452 mSource = (predecessor != null) ? predecessor : source; 6453 return; 6454 } 6455 mSource = source; 6456 final long timeSinceLastMillis = SystemClock.uptimeMillis() - mLastEventTimeMillis; 6457 final long minEventIntevalMillis = 6458 ViewConfiguration.getSendRecurringAccessibilityEventsInterval(); 6459 if (timeSinceLastMillis >= minEventIntevalMillis) { 6460 mSource.removeCallbacks(this); 6461 run(); 6462 } else { 6463 mSource.postDelayed(this, minEventIntevalMillis - timeSinceLastMillis); 6464 } 6465 } 6466 } 6467} 6468