ViewRootImpl.java revision 8f303ad97007a9b38d6d927353c1fba812879ae5
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 CompatibilityInfoHolder mCompatibilityInfo; 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 CompatibilityInfoHolder cih = display.getCompatibilityInfo(); 340 mCompatibilityInfo = cih != null ? cih : new CompatibilityInfoHolder(); 341 342 mThread = Thread.currentThread(); 343 mLocation = new WindowLeaked(null); 344 mLocation.fillInStackTrace(); 345 mWidth = -1; 346 mHeight = -1; 347 mDirty = new Rect(); 348 mTempRect = new Rect(); 349 mVisRect = new Rect(); 350 mWinFrame = new Rect(); 351 mWindow = new W(this); 352 mTargetSdkVersion = context.getApplicationInfo().targetSdkVersion; 353 mViewVisibility = View.GONE; 354 mTransparentRegion = new Region(); 355 mPreviousTransparentRegion = new Region(); 356 mFirst = true; // true for the first time the view is added 357 mAdded = false; 358 mAccessibilityManager = AccessibilityManager.getInstance(context); 359 mAccessibilityInteractionConnectionManager = 360 new AccessibilityInteractionConnectionManager(); 361 mAccessibilityManager.addAccessibilityStateChangeListener( 362 mAccessibilityInteractionConnectionManager); 363 mAttachInfo = new View.AttachInfo(mWindowSession, mWindow, display, this, mHandler, this); 364 mViewConfiguration = ViewConfiguration.get(context); 365 mDensity = context.getResources().getDisplayMetrics().densityDpi; 366 mNoncompatDensity = context.getResources().getDisplayMetrics().noncompatDensityDpi; 367 mFallbackEventHandler = PolicyManager.makeNewFallbackEventHandler(context); 368 mChoreographer = Choreographer.getInstance(); 369 370 PowerManager powerManager = (PowerManager) context.getSystemService(Context.POWER_SERVICE); 371 mAttachInfo.mScreenOn = powerManager.isScreenOn(); 372 loadSystemProperties(); 373 } 374 375 public static void addFirstDrawHandler(Runnable callback) { 376 synchronized (sFirstDrawHandlers) { 377 if (!sFirstDrawComplete) { 378 sFirstDrawHandlers.add(callback); 379 } 380 } 381 } 382 383 public static void addConfigCallback(ComponentCallbacks callback) { 384 synchronized (sConfigCallbacks) { 385 sConfigCallbacks.add(callback); 386 } 387 } 388 389 // FIXME for perf testing only 390 private boolean mProfile = false; 391 392 /** 393 * Call this to profile the next traversal call. 394 * FIXME for perf testing only. Remove eventually 395 */ 396 public void profile() { 397 mProfile = true; 398 } 399 400 /** 401 * Indicates whether we are in touch mode. Calling this method triggers an IPC 402 * call and should be avoided whenever possible. 403 * 404 * @return True, if the device is in touch mode, false otherwise. 405 * 406 * @hide 407 */ 408 static boolean isInTouchMode() { 409 IWindowSession windowSession = WindowManagerGlobal.peekWindowSession(); 410 if (windowSession != null) { 411 try { 412 return windowSession.getInTouchMode(); 413 } catch (RemoteException e) { 414 } 415 } 416 return false; 417 } 418 419 /** 420 * We have one child 421 */ 422 public void setView(View view, WindowManager.LayoutParams attrs, View panelParentView) { 423 synchronized (this) { 424 if (mView == null) { 425 mView = view; 426 mViewLayoutDirectionInitial = mView.getRawLayoutDirection(); 427 mFallbackEventHandler.setView(view); 428 mWindowAttributes.copyFrom(attrs); 429 if (mWindowAttributes.packageName == null) { 430 mWindowAttributes.packageName = mBasePackageName; 431 } 432 attrs = mWindowAttributes; 433 // Keep track of the actual window flags supplied by the client. 434 mClientWindowLayoutFlags = attrs.flags; 435 436 setAccessibilityFocus(null, null); 437 438 if (view instanceof RootViewSurfaceTaker) { 439 mSurfaceHolderCallback = 440 ((RootViewSurfaceTaker)view).willYouTakeTheSurface(); 441 if (mSurfaceHolderCallback != null) { 442 mSurfaceHolder = new TakenSurfaceHolder(); 443 mSurfaceHolder.setFormat(PixelFormat.UNKNOWN); 444 } 445 } 446 447 CompatibilityInfo compatibilityInfo = mCompatibilityInfo.get(); 448 mTranslator = compatibilityInfo.getTranslator(); 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) { 927 mResizeBuffer.destroy(); 928 mResizeBuffer = null; 929 } 930 } 931 932 /** 933 * Add LayoutTransition to the list of transitions to be started in the next traversal. 934 * This list will be cleared after the transitions on the list are start()'ed. These 935 * transitionsa re added by LayoutTransition itself when it sets up animations. The setup 936 * happens during the layout phase of traversal, which we want to complete before any of the 937 * animations are started (because those animations may side-effect properties that layout 938 * depends upon, like the bounding rectangles of the affected views). So we add the transition 939 * to the list and it is started just prior to starting the drawing phase of traversal. 940 * 941 * @param transition The LayoutTransition to be started on the next traversal. 942 * 943 * @hide 944 */ 945 public void requestTransitionStart(LayoutTransition transition) { 946 if (mPendingTransitions == null || !mPendingTransitions.contains(transition)) { 947 if (mPendingTransitions == null) { 948 mPendingTransitions = new ArrayList<LayoutTransition>(); 949 } 950 mPendingTransitions.add(transition); 951 } 952 } 953 954 void scheduleTraversals() { 955 if (!mTraversalScheduled) { 956 mTraversalScheduled = true; 957 mTraversalBarrier = mHandler.getLooper().postSyncBarrier(); 958 mChoreographer.postCallback( 959 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 960 scheduleConsumeBatchedInput(); 961 } 962 } 963 964 void unscheduleTraversals() { 965 if (mTraversalScheduled) { 966 mTraversalScheduled = false; 967 mHandler.getLooper().removeSyncBarrier(mTraversalBarrier); 968 mChoreographer.removeCallbacks( 969 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 970 } 971 } 972 973 void doTraversal() { 974 if (mTraversalScheduled) { 975 mTraversalScheduled = false; 976 mHandler.getLooper().removeSyncBarrier(mTraversalBarrier); 977 978 if (mProfile) { 979 Debug.startMethodTracing("ViewAncestor"); 980 } 981 982 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "performTraversals"); 983 try { 984 performTraversals(); 985 } finally { 986 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 987 } 988 989 if (mProfile) { 990 Debug.stopMethodTracing(); 991 mProfile = false; 992 } 993 } 994 } 995 996 private void applyKeepScreenOnFlag(WindowManager.LayoutParams params) { 997 // Update window's global keep screen on flag: if a view has requested 998 // that the screen be kept on, then it is always set; otherwise, it is 999 // set to whatever the client last requested for the global state. 1000 if (mAttachInfo.mKeepScreenOn) { 1001 params.flags |= WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON; 1002 } else { 1003 params.flags = (params.flags&~WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON) 1004 | (mClientWindowLayoutFlags&WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 1005 } 1006 } 1007 1008 private boolean collectViewAttributes() { 1009 final View.AttachInfo attachInfo = mAttachInfo; 1010 if (attachInfo.mRecomputeGlobalAttributes) { 1011 //Log.i(TAG, "Computing view hierarchy attributes!"); 1012 attachInfo.mRecomputeGlobalAttributes = false; 1013 boolean oldScreenOn = attachInfo.mKeepScreenOn; 1014 attachInfo.mKeepScreenOn = false; 1015 attachInfo.mSystemUiVisibility = 0; 1016 attachInfo.mHasSystemUiListeners = false; 1017 mView.dispatchCollectViewAttributes(attachInfo, 0); 1018 attachInfo.mSystemUiVisibility &= ~attachInfo.mDisabledSystemUiVisibility; 1019 WindowManager.LayoutParams params = mWindowAttributes; 1020 if (attachInfo.mKeepScreenOn != oldScreenOn 1021 || attachInfo.mSystemUiVisibility != params.subtreeSystemUiVisibility 1022 || attachInfo.mHasSystemUiListeners != params.hasSystemUiListeners) { 1023 applyKeepScreenOnFlag(params); 1024 params.subtreeSystemUiVisibility = attachInfo.mSystemUiVisibility; 1025 params.hasSystemUiListeners = attachInfo.mHasSystemUiListeners; 1026 mView.dispatchWindowSystemUiVisiblityChanged(attachInfo.mSystemUiVisibility); 1027 return true; 1028 } 1029 } 1030 return false; 1031 } 1032 1033 private boolean measureHierarchy(final View host, final WindowManager.LayoutParams lp, 1034 final Resources res, final int desiredWindowWidth, final int desiredWindowHeight) { 1035 int childWidthMeasureSpec; 1036 int childHeightMeasureSpec; 1037 boolean windowSizeMayChange = false; 1038 1039 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) Log.v(TAG, 1040 "Measuring " + host + " in display " + desiredWindowWidth 1041 + "x" + desiredWindowHeight + "..."); 1042 1043 boolean goodMeasure = false; 1044 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT) { 1045 // On large screens, we don't want to allow dialogs to just 1046 // stretch to fill the entire width of the screen to display 1047 // one line of text. First try doing the layout at a smaller 1048 // size to see if it will fit. 1049 final DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1050 res.getValue(com.android.internal.R.dimen.config_prefDialogWidth, mTmpValue, true); 1051 int baseSize = 0; 1052 if (mTmpValue.type == TypedValue.TYPE_DIMENSION) { 1053 baseSize = (int)mTmpValue.getDimension(packageMetrics); 1054 } 1055 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": baseSize=" + baseSize); 1056 if (baseSize != 0 && desiredWindowWidth > baseSize) { 1057 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1058 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1059 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1060 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": measured (" 1061 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1062 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1063 goodMeasure = true; 1064 } else { 1065 // Didn't fit in that size... try expanding a bit. 1066 baseSize = (baseSize+desiredWindowWidth)/2; 1067 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": next baseSize=" 1068 + baseSize); 1069 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1070 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1071 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": measured (" 1072 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1073 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1074 if (DEBUG_DIALOG) Log.v(TAG, "Good!"); 1075 goodMeasure = true; 1076 } 1077 } 1078 } 1079 } 1080 1081 if (!goodMeasure) { 1082 childWidthMeasureSpec = getRootMeasureSpec(desiredWindowWidth, lp.width); 1083 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1084 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1085 if (mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) { 1086 windowSizeMayChange = true; 1087 } 1088 } 1089 1090 if (DBG) { 1091 System.out.println("======================================"); 1092 System.out.println("performTraversals -- after measure"); 1093 host.debug(); 1094 } 1095 1096 return windowSizeMayChange; 1097 } 1098 1099 private void performTraversals() { 1100 // cache mView since it is used so much below... 1101 final View host = mView; 1102 1103 if (DBG) { 1104 System.out.println("======================================"); 1105 System.out.println("performTraversals"); 1106 host.debug(); 1107 } 1108 1109 if (host == null || !mAdded) 1110 return; 1111 1112 mIsInTraversal = true; 1113 mWillDrawSoon = true; 1114 boolean windowSizeMayChange = false; 1115 boolean newSurface = false; 1116 boolean surfaceChanged = false; 1117 WindowManager.LayoutParams lp = mWindowAttributes; 1118 1119 int desiredWindowWidth; 1120 int desiredWindowHeight; 1121 1122 final View.AttachInfo attachInfo = mAttachInfo; 1123 1124 final int viewVisibility = getHostVisibility(); 1125 boolean viewVisibilityChanged = mViewVisibility != viewVisibility 1126 || mNewSurfaceNeeded; 1127 1128 WindowManager.LayoutParams params = null; 1129 if (mWindowAttributesChanged) { 1130 mWindowAttributesChanged = false; 1131 surfaceChanged = true; 1132 params = lp; 1133 } 1134 CompatibilityInfo compatibilityInfo = mCompatibilityInfo.get(); 1135 if (compatibilityInfo.supportsScreen() == mLastInCompatMode) { 1136 params = lp; 1137 mFullRedrawNeeded = true; 1138 mLayoutRequested = true; 1139 if (mLastInCompatMode) { 1140 params.flags &= ~WindowManager.LayoutParams.FLAG_COMPATIBLE_WINDOW; 1141 mLastInCompatMode = false; 1142 } else { 1143 params.flags |= WindowManager.LayoutParams.FLAG_COMPATIBLE_WINDOW; 1144 mLastInCompatMode = true; 1145 } 1146 } 1147 1148 mWindowAttributesChangesFlag = 0; 1149 1150 Rect frame = mWinFrame; 1151 if (mFirst) { 1152 mFullRedrawNeeded = true; 1153 mLayoutRequested = true; 1154 1155 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL) { 1156 // NOTE -- system code, won't try to do compat mode. 1157 Point size = new Point(); 1158 mDisplay.getRealSize(size); 1159 desiredWindowWidth = size.x; 1160 desiredWindowHeight = size.y; 1161 } else { 1162 DisplayMetrics packageMetrics = 1163 mView.getContext().getResources().getDisplayMetrics(); 1164 desiredWindowWidth = packageMetrics.widthPixels; 1165 desiredWindowHeight = packageMetrics.heightPixels; 1166 } 1167 1168 // For the very first time, tell the view hierarchy that it 1169 // is attached to the window. Note that at this point the surface 1170 // object is not initialized to its backing store, but soon it 1171 // will be (assuming the window is visible). 1172 attachInfo.mSurface = mSurface; 1173 // We used to use the following condition to choose 32 bits drawing caches: 1174 // PixelFormat.hasAlpha(lp.format) || lp.format == PixelFormat.RGBX_8888 1175 // However, windows are now always 32 bits by default, so choose 32 bits 1176 attachInfo.mUse32BitDrawingCache = true; 1177 attachInfo.mHasWindowFocus = false; 1178 attachInfo.mWindowVisibility = viewVisibility; 1179 attachInfo.mRecomputeGlobalAttributes = false; 1180 viewVisibilityChanged = false; 1181 mLastConfiguration.setTo(host.getResources().getConfiguration()); 1182 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1183 // Set the layout direction if it has not been set before (inherit is the default) 1184 if (mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 1185 host.setLayoutDirection(mLastConfiguration.getLayoutDirection()); 1186 } 1187 host.dispatchAttachedToWindow(attachInfo, 0); 1188 attachInfo.mTreeObserver.dispatchOnWindowAttachedChange(true); 1189 mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets); 1190 host.fitSystemWindows(mFitSystemWindowsInsets); 1191 //Log.i(TAG, "Screen on initialized: " + attachInfo.mKeepScreenOn); 1192 1193 } else { 1194 desiredWindowWidth = frame.width(); 1195 desiredWindowHeight = frame.height(); 1196 if (desiredWindowWidth != mWidth || desiredWindowHeight != mHeight) { 1197 if (DEBUG_ORIENTATION) Log.v(TAG, 1198 "View " + host + " resized to: " + frame); 1199 mFullRedrawNeeded = true; 1200 mLayoutRequested = true; 1201 windowSizeMayChange = true; 1202 } 1203 } 1204 1205 if (viewVisibilityChanged) { 1206 attachInfo.mWindowVisibility = viewVisibility; 1207 host.dispatchWindowVisibilityChanged(viewVisibility); 1208 if (viewVisibility != View.VISIBLE || mNewSurfaceNeeded) { 1209 destroyHardwareResources(); 1210 } 1211 if (viewVisibility == View.GONE) { 1212 // After making a window gone, we will count it as being 1213 // shown for the first time the next time it gets focus. 1214 mHasHadWindowFocus = false; 1215 } 1216 } 1217 1218 // Execute enqueued actions on every traversal in case a detached view enqueued an action 1219 getRunQueue().executeActions(attachInfo.mHandler); 1220 1221 boolean insetsChanged = false; 1222 1223 boolean layoutRequested = mLayoutRequested && !mStopped; 1224 if (layoutRequested) { 1225 1226 final Resources res = mView.getContext().getResources(); 1227 1228 if (mFirst) { 1229 // make sure touch mode code executes by setting cached value 1230 // to opposite of the added touch mode. 1231 mAttachInfo.mInTouchMode = !mAddedTouchMode; 1232 ensureTouchModeLocally(mAddedTouchMode); 1233 } else { 1234 if (!mPendingOverscanInsets.equals(mAttachInfo.mOverscanInsets)) { 1235 insetsChanged = true; 1236 } 1237 if (!mPendingContentInsets.equals(mAttachInfo.mContentInsets)) { 1238 insetsChanged = true; 1239 } 1240 if (!mPendingVisibleInsets.equals(mAttachInfo.mVisibleInsets)) { 1241 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1242 if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: " 1243 + mAttachInfo.mVisibleInsets); 1244 } 1245 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT 1246 || lp.height == ViewGroup.LayoutParams.WRAP_CONTENT) { 1247 windowSizeMayChange = true; 1248 1249 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL) { 1250 // NOTE -- system code, won't try to do compat mode. 1251 Point size = new Point(); 1252 mDisplay.getRealSize(size); 1253 desiredWindowWidth = size.x; 1254 desiredWindowHeight = size.y; 1255 } else { 1256 DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1257 desiredWindowWidth = packageMetrics.widthPixels; 1258 desiredWindowHeight = packageMetrics.heightPixels; 1259 } 1260 } 1261 } 1262 1263 // Ask host how big it wants to be 1264 windowSizeMayChange |= measureHierarchy(host, lp, res, 1265 desiredWindowWidth, desiredWindowHeight); 1266 } 1267 1268 if (collectViewAttributes()) { 1269 params = lp; 1270 } 1271 if (attachInfo.mForceReportNewAttributes) { 1272 attachInfo.mForceReportNewAttributes = false; 1273 params = lp; 1274 } 1275 1276 if (mFirst || attachInfo.mViewVisibilityChanged) { 1277 attachInfo.mViewVisibilityChanged = false; 1278 int resizeMode = mSoftInputMode & 1279 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST; 1280 // If we are in auto resize mode, then we need to determine 1281 // what mode to use now. 1282 if (resizeMode == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 1283 final int N = attachInfo.mScrollContainers.size(); 1284 for (int i=0; i<N; i++) { 1285 if (attachInfo.mScrollContainers.get(i).isShown()) { 1286 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE; 1287 } 1288 } 1289 if (resizeMode == 0) { 1290 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_PAN; 1291 } 1292 if ((lp.softInputMode & 1293 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) != resizeMode) { 1294 lp.softInputMode = (lp.softInputMode & 1295 ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) | 1296 resizeMode; 1297 params = lp; 1298 } 1299 } 1300 } 1301 1302 if (params != null) { 1303 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 1304 if (!PixelFormat.formatHasAlpha(params.format)) { 1305 params.format = PixelFormat.TRANSLUCENT; 1306 } 1307 } 1308 mAttachInfo.mOverscanRequested = (params.flags 1309 & WindowManager.LayoutParams.FLAG_LAYOUT_IN_OVERSCAN) != 0; 1310 } 1311 1312 if (mFitSystemWindowsRequested) { 1313 mFitSystemWindowsRequested = false; 1314 mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets); 1315 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1316 host.fitSystemWindows(mFitSystemWindowsInsets); 1317 if (mLayoutRequested) { 1318 // Short-circuit catching a new layout request here, so 1319 // we don't need to go through two layout passes when things 1320 // change due to fitting system windows, which can happen a lot. 1321 windowSizeMayChange |= measureHierarchy(host, lp, 1322 mView.getContext().getResources(), 1323 desiredWindowWidth, desiredWindowHeight); 1324 } 1325 } 1326 1327 if (layoutRequested) { 1328 // Clear this now, so that if anything requests a layout in the 1329 // rest of this function we will catch it and re-run a full 1330 // layout pass. 1331 mLayoutRequested = false; 1332 } 1333 1334 boolean windowShouldResize = layoutRequested && windowSizeMayChange 1335 && ((mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) 1336 || (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT && 1337 frame.width() < desiredWindowWidth && frame.width() != mWidth) 1338 || (lp.height == ViewGroup.LayoutParams.WRAP_CONTENT && 1339 frame.height() < desiredWindowHeight && frame.height() != mHeight)); 1340 1341 final boolean computesInternalInsets = 1342 attachInfo.mTreeObserver.hasComputeInternalInsetsListeners(); 1343 1344 boolean insetsPending = false; 1345 int relayoutResult = 0; 1346 1347 if (mFirst || windowShouldResize || insetsChanged || 1348 viewVisibilityChanged || params != null) { 1349 1350 if (viewVisibility == View.VISIBLE) { 1351 // If this window is giving internal insets to the window 1352 // manager, and it is being added or changing its visibility, 1353 // then we want to first give the window manager "fake" 1354 // insets to cause it to effectively ignore the content of 1355 // the window during layout. This avoids it briefly causing 1356 // other windows to resize/move based on the raw frame of the 1357 // window, waiting until we can finish laying out this window 1358 // and get back to the window manager with the ultimately 1359 // computed insets. 1360 insetsPending = computesInternalInsets && (mFirst || viewVisibilityChanged); 1361 } 1362 1363 if (mSurfaceHolder != null) { 1364 mSurfaceHolder.mSurfaceLock.lock(); 1365 mDrawingAllowed = true; 1366 } 1367 1368 boolean hwInitialized = false; 1369 boolean contentInsetsChanged = false; 1370 boolean hadSurface = mSurface.isValid(); 1371 1372 try { 1373 if (DEBUG_LAYOUT) { 1374 Log.i(TAG, "host=w:" + host.getMeasuredWidth() + ", h:" + 1375 host.getMeasuredHeight() + ", params=" + params); 1376 } 1377 1378 final int surfaceGenerationId = mSurface.getGenerationId(); 1379 relayoutResult = relayoutWindow(params, viewVisibility, insetsPending); 1380 if (!mDrawDuringWindowsAnimating) { 1381 mWindowsAnimating |= 1382 (relayoutResult & WindowManagerGlobal.RELAYOUT_RES_ANIMATING) != 0; 1383 } 1384 1385 if (DEBUG_LAYOUT) Log.v(TAG, "relayout: frame=" + frame.toShortString() 1386 + " overscan=" + mPendingOverscanInsets.toShortString() 1387 + " content=" + mPendingContentInsets.toShortString() 1388 + " visible=" + mPendingVisibleInsets.toShortString() 1389 + " surface=" + mSurface); 1390 1391 if (mPendingConfiguration.seq != 0) { 1392 if (DEBUG_CONFIGURATION) Log.v(TAG, "Visible with new config: " 1393 + mPendingConfiguration); 1394 updateConfiguration(mPendingConfiguration, !mFirst); 1395 mPendingConfiguration.seq = 0; 1396 } 1397 1398 final boolean overscanInsetsChanged = !mPendingOverscanInsets.equals( 1399 mAttachInfo.mOverscanInsets); 1400 contentInsetsChanged = !mPendingContentInsets.equals( 1401 mAttachInfo.mContentInsets); 1402 final boolean visibleInsetsChanged = !mPendingVisibleInsets.equals( 1403 mAttachInfo.mVisibleInsets); 1404 if (contentInsetsChanged) { 1405 if (mWidth > 0 && mHeight > 0 && lp != null && 1406 ((lp.systemUiVisibility|lp.subtreeSystemUiVisibility) 1407 & View.SYSTEM_UI_LAYOUT_FLAGS) == 0 && 1408 mSurface != null && mSurface.isValid() && 1409 !mAttachInfo.mTurnOffWindowResizeAnim && 1410 mAttachInfo.mHardwareRenderer != null && 1411 mAttachInfo.mHardwareRenderer.isEnabled() && 1412 mAttachInfo.mHardwareRenderer.validate() && 1413 lp != null && !PixelFormat.formatHasAlpha(lp.format)) { 1414 1415 disposeResizeBuffer(); 1416 1417 boolean completed = false; 1418 HardwareCanvas hwRendererCanvas = mAttachInfo.mHardwareRenderer.getCanvas(); 1419 HardwareCanvas layerCanvas = null; 1420 try { 1421 if (mResizeBuffer == null) { 1422 mResizeBuffer = mAttachInfo.mHardwareRenderer.createHardwareLayer( 1423 mWidth, mHeight, false); 1424 } else if (mResizeBuffer.getWidth() != mWidth || 1425 mResizeBuffer.getHeight() != mHeight) { 1426 mResizeBuffer.resize(mWidth, mHeight); 1427 } 1428 // TODO: should handle create/resize failure 1429 layerCanvas = mResizeBuffer.start(hwRendererCanvas); 1430 final int restoreCount = layerCanvas.save(); 1431 1432 int yoff; 1433 final boolean scrolling = mScroller != null 1434 && mScroller.computeScrollOffset(); 1435 if (scrolling) { 1436 yoff = mScroller.getCurrY(); 1437 mScroller.abortAnimation(); 1438 } else { 1439 yoff = mScrollY; 1440 } 1441 1442 layerCanvas.translate(0, -yoff); 1443 if (mTranslator != null) { 1444 mTranslator.translateCanvas(layerCanvas); 1445 } 1446 1447 DisplayList displayList = mView.mDisplayList; 1448 if (displayList != null) { 1449 layerCanvas.drawDisplayList(displayList, null, 1450 DisplayList.FLAG_CLIP_CHILDREN); 1451 } else { 1452 mView.draw(layerCanvas); 1453 } 1454 1455 drawAccessibilityFocusedDrawableIfNeeded(layerCanvas); 1456 1457 mResizeBufferStartTime = SystemClock.uptimeMillis(); 1458 mResizeBufferDuration = mView.getResources().getInteger( 1459 com.android.internal.R.integer.config_mediumAnimTime); 1460 completed = true; 1461 1462 layerCanvas.restoreToCount(restoreCount); 1463 } catch (OutOfMemoryError e) { 1464 Log.w(TAG, "Not enough memory for content change anim buffer", e); 1465 } finally { 1466 if (mResizeBuffer != null) { 1467 mResizeBuffer.end(hwRendererCanvas); 1468 if (!completed) { 1469 mResizeBuffer.destroy(); 1470 mResizeBuffer = null; 1471 } 1472 } 1473 } 1474 } 1475 mAttachInfo.mContentInsets.set(mPendingContentInsets); 1476 if (DEBUG_LAYOUT) Log.v(TAG, "Content insets changing to: " 1477 + mAttachInfo.mContentInsets); 1478 } 1479 if (overscanInsetsChanged) { 1480 mAttachInfo.mOverscanInsets.set(mPendingOverscanInsets); 1481 if (DEBUG_LAYOUT) Log.v(TAG, "Overscan insets changing to: " 1482 + mAttachInfo.mOverscanInsets); 1483 // Need to relayout with content insets. 1484 contentInsetsChanged = true; 1485 } 1486 if (contentInsetsChanged || mLastSystemUiVisibility != 1487 mAttachInfo.mSystemUiVisibility || mFitSystemWindowsRequested 1488 || mLastOverscanRequested != mAttachInfo.mOverscanRequested) { 1489 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1490 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1491 mFitSystemWindowsRequested = false; 1492 mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets); 1493 host.fitSystemWindows(mFitSystemWindowsInsets); 1494 } 1495 if (visibleInsetsChanged) { 1496 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1497 if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: " 1498 + mAttachInfo.mVisibleInsets); 1499 } 1500 1501 if (!hadSurface) { 1502 if (mSurface.isValid()) { 1503 // If we are creating a new surface, then we need to 1504 // completely redraw it. Also, when we get to the 1505 // point of drawing it we will hold off and schedule 1506 // a new traversal instead. This is so we can tell the 1507 // window manager about all of the windows being displayed 1508 // before actually drawing them, so it can display then 1509 // all at once. 1510 newSurface = true; 1511 mFullRedrawNeeded = true; 1512 mPreviousTransparentRegion.setEmpty(); 1513 1514 if (mAttachInfo.mHardwareRenderer != null) { 1515 try { 1516 hwInitialized = mAttachInfo.mHardwareRenderer.initialize( 1517 mHolder.getSurface()); 1518 } catch (Surface.OutOfResourcesException e) { 1519 handleOutOfResourcesException(e); 1520 return; 1521 } 1522 } 1523 } 1524 } else if (!mSurface.isValid()) { 1525 // If the surface has been removed, then reset the scroll 1526 // positions. 1527 if (mLastScrolledFocus != null) { 1528 mLastScrolledFocus.clear(); 1529 } 1530 mScrollY = mCurScrollY = 0; 1531 if (mScroller != null) { 1532 mScroller.abortAnimation(); 1533 } 1534 disposeResizeBuffer(); 1535 // Our surface is gone 1536 if (mAttachInfo.mHardwareRenderer != null && 1537 mAttachInfo.mHardwareRenderer.isEnabled()) { 1538 mAttachInfo.mHardwareRenderer.destroy(true); 1539 } 1540 } else if (surfaceGenerationId != mSurface.getGenerationId() && 1541 mSurfaceHolder == null && mAttachInfo.mHardwareRenderer != null) { 1542 mFullRedrawNeeded = true; 1543 try { 1544 mAttachInfo.mHardwareRenderer.updateSurface(mHolder.getSurface()); 1545 } catch (Surface.OutOfResourcesException e) { 1546 handleOutOfResourcesException(e); 1547 return; 1548 } 1549 } 1550 } catch (RemoteException e) { 1551 } 1552 1553 if (DEBUG_ORIENTATION) Log.v( 1554 TAG, "Relayout returned: frame=" + frame + ", surface=" + mSurface); 1555 1556 attachInfo.mWindowLeft = frame.left; 1557 attachInfo.mWindowTop = frame.top; 1558 1559 // !!FIXME!! This next section handles the case where we did not get the 1560 // window size we asked for. We should avoid this by getting a maximum size from 1561 // the window session beforehand. 1562 if (mWidth != frame.width() || mHeight != frame.height()) { 1563 mWidth = frame.width(); 1564 mHeight = frame.height(); 1565 } 1566 1567 if (mSurfaceHolder != null) { 1568 // The app owns the surface; tell it about what is going on. 1569 if (mSurface.isValid()) { 1570 // XXX .copyFrom() doesn't work! 1571 //mSurfaceHolder.mSurface.copyFrom(mSurface); 1572 mSurfaceHolder.mSurface = mSurface; 1573 } 1574 mSurfaceHolder.setSurfaceFrameSize(mWidth, mHeight); 1575 mSurfaceHolder.mSurfaceLock.unlock(); 1576 if (mSurface.isValid()) { 1577 if (!hadSurface) { 1578 mSurfaceHolder.ungetCallbacks(); 1579 1580 mIsCreating = true; 1581 mSurfaceHolderCallback.surfaceCreated(mSurfaceHolder); 1582 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1583 if (callbacks != null) { 1584 for (SurfaceHolder.Callback c : callbacks) { 1585 c.surfaceCreated(mSurfaceHolder); 1586 } 1587 } 1588 surfaceChanged = true; 1589 } 1590 if (surfaceChanged) { 1591 mSurfaceHolderCallback.surfaceChanged(mSurfaceHolder, 1592 lp.format, mWidth, mHeight); 1593 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1594 if (callbacks != null) { 1595 for (SurfaceHolder.Callback c : callbacks) { 1596 c.surfaceChanged(mSurfaceHolder, lp.format, 1597 mWidth, mHeight); 1598 } 1599 } 1600 } 1601 mIsCreating = false; 1602 } else if (hadSurface) { 1603 mSurfaceHolder.ungetCallbacks(); 1604 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1605 mSurfaceHolderCallback.surfaceDestroyed(mSurfaceHolder); 1606 if (callbacks != null) { 1607 for (SurfaceHolder.Callback c : callbacks) { 1608 c.surfaceDestroyed(mSurfaceHolder); 1609 } 1610 } 1611 mSurfaceHolder.mSurfaceLock.lock(); 1612 try { 1613 mSurfaceHolder.mSurface = new Surface(); 1614 } finally { 1615 mSurfaceHolder.mSurfaceLock.unlock(); 1616 } 1617 } 1618 } 1619 1620 if (mAttachInfo.mHardwareRenderer != null && 1621 mAttachInfo.mHardwareRenderer.isEnabled()) { 1622 if (hwInitialized || 1623 mWidth != mAttachInfo.mHardwareRenderer.getWidth() || 1624 mHeight != mAttachInfo.mHardwareRenderer.getHeight()) { 1625 mAttachInfo.mHardwareRenderer.setup(mWidth, mHeight); 1626 if (!hwInitialized) { 1627 mAttachInfo.mHardwareRenderer.invalidate(mHolder.getSurface()); 1628 mFullRedrawNeeded = true; 1629 } 1630 } 1631 } 1632 1633 if (!mStopped) { 1634 boolean focusChangedDueToTouchMode = ensureTouchModeLocally( 1635 (relayoutResult&WindowManagerGlobal.RELAYOUT_RES_IN_TOUCH_MODE) != 0); 1636 if (focusChangedDueToTouchMode || mWidth != host.getMeasuredWidth() 1637 || mHeight != host.getMeasuredHeight() || contentInsetsChanged) { 1638 int childWidthMeasureSpec = getRootMeasureSpec(mWidth, lp.width); 1639 int childHeightMeasureSpec = getRootMeasureSpec(mHeight, lp.height); 1640 1641 if (DEBUG_LAYOUT) Log.v(TAG, "Ooops, something changed! mWidth=" 1642 + mWidth + " measuredWidth=" + host.getMeasuredWidth() 1643 + " mHeight=" + mHeight 1644 + " measuredHeight=" + host.getMeasuredHeight() 1645 + " coveredInsetsChanged=" + contentInsetsChanged); 1646 1647 // Ask host how big it wants to be 1648 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1649 1650 // Implementation of weights from WindowManager.LayoutParams 1651 // We just grow the dimensions as needed and re-measure if 1652 // needs be 1653 int width = host.getMeasuredWidth(); 1654 int height = host.getMeasuredHeight(); 1655 boolean measureAgain = false; 1656 1657 if (lp.horizontalWeight > 0.0f) { 1658 width += (int) ((mWidth - width) * lp.horizontalWeight); 1659 childWidthMeasureSpec = MeasureSpec.makeMeasureSpec(width, 1660 MeasureSpec.EXACTLY); 1661 measureAgain = true; 1662 } 1663 if (lp.verticalWeight > 0.0f) { 1664 height += (int) ((mHeight - height) * lp.verticalWeight); 1665 childHeightMeasureSpec = MeasureSpec.makeMeasureSpec(height, 1666 MeasureSpec.EXACTLY); 1667 measureAgain = true; 1668 } 1669 1670 if (measureAgain) { 1671 if (DEBUG_LAYOUT) Log.v(TAG, 1672 "And hey let's measure once more: width=" + width 1673 + " height=" + height); 1674 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1675 } 1676 1677 layoutRequested = true; 1678 } 1679 } 1680 } else { 1681 // Not the first pass and no window/insets/visibility change but the window 1682 // may have moved and we need check that and if so to update the left and right 1683 // in the attach info. We translate only the window frame since on window move 1684 // the window manager tells us only for the new frame but the insets are the 1685 // same and we do not want to translate them more than once. 1686 1687 // TODO: Well, we are checking whether the frame has changed similarly 1688 // to how this is done for the insets. This is however incorrect since 1689 // the insets and the frame are translated. For example, the old frame 1690 // was (1, 1 - 1, 1) and was translated to say (2, 2 - 2, 2), now the new 1691 // reported frame is (2, 2 - 2, 2) which implies no change but this is not 1692 // true since we are comparing a not translated value to a translated one. 1693 // This scenario is rare but we may want to fix that. 1694 1695 final boolean windowMoved = (attachInfo.mWindowLeft != frame.left 1696 || attachInfo.mWindowTop != frame.top); 1697 if (windowMoved) { 1698 if (mTranslator != null) { 1699 mTranslator.translateRectInScreenToAppWinFrame(frame); 1700 } 1701 attachInfo.mWindowLeft = frame.left; 1702 attachInfo.mWindowTop = frame.top; 1703 } 1704 } 1705 1706 final boolean didLayout = layoutRequested && !mStopped; 1707 boolean triggerGlobalLayoutListener = didLayout 1708 || attachInfo.mRecomputeGlobalAttributes; 1709 if (didLayout) { 1710 performLayout(lp, desiredWindowWidth, desiredWindowHeight); 1711 1712 // By this point all views have been sized and positioned 1713 // We can compute the transparent area 1714 1715 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 1716 // start out transparent 1717 // TODO: AVOID THAT CALL BY CACHING THE RESULT? 1718 host.getLocationInWindow(mTmpLocation); 1719 mTransparentRegion.set(mTmpLocation[0], mTmpLocation[1], 1720 mTmpLocation[0] + host.mRight - host.mLeft, 1721 mTmpLocation[1] + host.mBottom - host.mTop); 1722 1723 host.gatherTransparentRegion(mTransparentRegion); 1724 if (mTranslator != null) { 1725 mTranslator.translateRegionInWindowToScreen(mTransparentRegion); 1726 } 1727 1728 if (!mTransparentRegion.equals(mPreviousTransparentRegion)) { 1729 mPreviousTransparentRegion.set(mTransparentRegion); 1730 mFullRedrawNeeded = true; 1731 // reconfigure window manager 1732 try { 1733 mWindowSession.setTransparentRegion(mWindow, mTransparentRegion); 1734 } catch (RemoteException e) { 1735 } 1736 } 1737 } 1738 1739 if (DBG) { 1740 System.out.println("======================================"); 1741 System.out.println("performTraversals -- after setFrame"); 1742 host.debug(); 1743 } 1744 } 1745 1746 if (triggerGlobalLayoutListener) { 1747 attachInfo.mRecomputeGlobalAttributes = false; 1748 attachInfo.mTreeObserver.dispatchOnGlobalLayout(); 1749 } 1750 1751 if (computesInternalInsets) { 1752 // Clear the original insets. 1753 final ViewTreeObserver.InternalInsetsInfo insets = attachInfo.mGivenInternalInsets; 1754 insets.reset(); 1755 1756 // Compute new insets in place. 1757 attachInfo.mTreeObserver.dispatchOnComputeInternalInsets(insets); 1758 1759 // Tell the window manager. 1760 if (insetsPending || !mLastGivenInsets.equals(insets)) { 1761 mLastGivenInsets.set(insets); 1762 1763 // Translate insets to screen coordinates if needed. 1764 final Rect contentInsets; 1765 final Rect visibleInsets; 1766 final Region touchableRegion; 1767 if (mTranslator != null) { 1768 contentInsets = mTranslator.getTranslatedContentInsets(insets.contentInsets); 1769 visibleInsets = mTranslator.getTranslatedVisibleInsets(insets.visibleInsets); 1770 touchableRegion = mTranslator.getTranslatedTouchableArea(insets.touchableRegion); 1771 } else { 1772 contentInsets = insets.contentInsets; 1773 visibleInsets = insets.visibleInsets; 1774 touchableRegion = insets.touchableRegion; 1775 } 1776 1777 try { 1778 mWindowSession.setInsets(mWindow, insets.mTouchableInsets, 1779 contentInsets, visibleInsets, touchableRegion); 1780 } catch (RemoteException e) { 1781 } 1782 } 1783 } 1784 1785 boolean skipDraw = false; 1786 1787 if (mFirst) { 1788 // handle first focus request 1789 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: mView.hasFocus()=" 1790 + mView.hasFocus()); 1791 if (mView != null) { 1792 if (!mView.hasFocus()) { 1793 mView.requestFocus(View.FOCUS_FORWARD); 1794 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: requested focused view=" 1795 + mView.findFocus()); 1796 } else { 1797 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: existing focused view=" 1798 + mView.findFocus()); 1799 } 1800 } 1801 if ((relayoutResult & WindowManagerGlobal.RELAYOUT_RES_ANIMATING) != 0) { 1802 // The first time we relayout the window, if the system is 1803 // doing window animations, we want to hold of on any future 1804 // draws until the animation is done. 1805 mWindowsAnimating = true; 1806 } 1807 } else if (mWindowsAnimating) { 1808 skipDraw = true; 1809 } 1810 1811 mFirst = false; 1812 mWillDrawSoon = false; 1813 mNewSurfaceNeeded = false; 1814 mViewVisibility = viewVisibility; 1815 1816 if (mAttachInfo.mHasWindowFocus) { 1817 final boolean imTarget = WindowManager.LayoutParams 1818 .mayUseInputMethod(mWindowAttributes.flags); 1819 if (imTarget != mLastWasImTarget) { 1820 mLastWasImTarget = imTarget; 1821 InputMethodManager imm = InputMethodManager.peekInstance(); 1822 if (imm != null && imTarget) { 1823 imm.startGettingWindowFocus(mView); 1824 imm.onWindowFocus(mView, mView.findFocus(), 1825 mWindowAttributes.softInputMode, 1826 !mHasHadWindowFocus, mWindowAttributes.flags); 1827 } 1828 } 1829 } 1830 1831 // Remember if we must report the next draw. 1832 if ((relayoutResult & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 1833 mReportNextDraw = true; 1834 } 1835 1836 boolean cancelDraw = attachInfo.mTreeObserver.dispatchOnPreDraw() || 1837 viewVisibility != View.VISIBLE; 1838 1839 if (!cancelDraw && !newSurface) { 1840 if (!skipDraw || mReportNextDraw) { 1841 if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 1842 for (int i = 0; i < mPendingTransitions.size(); ++i) { 1843 mPendingTransitions.get(i).startChangingAnimations(); 1844 } 1845 mPendingTransitions.clear(); 1846 } 1847 1848 performDraw(); 1849 } 1850 } else { 1851 if (viewVisibility == View.VISIBLE) { 1852 // Try again 1853 scheduleTraversals(); 1854 } else if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 1855 for (int i = 0; i < mPendingTransitions.size(); ++i) { 1856 mPendingTransitions.get(i).endChangingAnimations(); 1857 } 1858 mPendingTransitions.clear(); 1859 } 1860 } 1861 1862 mIsInTraversal = false; 1863 } 1864 1865 private void handleOutOfResourcesException(Surface.OutOfResourcesException e) { 1866 Log.e(TAG, "OutOfResourcesException initializing HW surface", e); 1867 try { 1868 if (!mWindowSession.outOfMemory(mWindow) && 1869 Process.myUid() != Process.SYSTEM_UID) { 1870 Slog.w(TAG, "No processes killed for memory; killing self"); 1871 Process.killProcess(Process.myPid()); 1872 } 1873 } catch (RemoteException ex) { 1874 } 1875 mLayoutRequested = true; // ask wm for a new surface next time. 1876 } 1877 1878 private void performMeasure(int childWidthMeasureSpec, int childHeightMeasureSpec) { 1879 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "measure"); 1880 try { 1881 mView.measure(childWidthMeasureSpec, childHeightMeasureSpec); 1882 } finally { 1883 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 1884 } 1885 } 1886 1887 /** 1888 * Called by {@link android.view.View#isInLayout()} to determine whether the view hierarchy 1889 * is currently undergoing a layout pass. 1890 * 1891 * @return whether the view hierarchy is currently undergoing a layout pass 1892 */ 1893 boolean isInLayout() { 1894 return mInLayout; 1895 } 1896 1897 /** 1898 * Called by {@link android.view.View#requestLayout()} if the view hierarchy is currently 1899 * undergoing a layout pass. requestLayout() should not generally be called during layout, 1900 * unless the container hierarchy knows what it is doing (i.e., it is fine as long as 1901 * all children in that container hierarchy are measured and laid out at the end of the layout 1902 * pass for that container). If requestLayout() is called anyway, we handle it correctly 1903 * by registering all requesters during a frame as it proceeds. At the end of the frame, 1904 * we check all of those views to see if any still have pending layout requests, which 1905 * indicates that they were not correctly handled by their container hierarchy. If that is 1906 * the case, we clear all such flags in the tree, to remove the buggy flag state that leads 1907 * to blank containers, and force a second request/measure/layout pass in this frame. If 1908 * more requestLayout() calls are received during that second layout pass, we post those 1909 * requests to the next frame to avoid possible infinite loops. 1910 * 1911 * <p>The return value from this method indicates whether the request should proceed 1912 * (if it is a request during the first layout pass) or should be skipped and posted to the 1913 * next frame (if it is a request during the second layout pass).</p> 1914 * 1915 * @param view the view that requested the layout. 1916 * 1917 * @return true if request should proceed, false otherwise. 1918 */ 1919 boolean requestLayoutDuringLayout(final View view) { 1920 if (view.mParent == null || view.mAttachInfo == null) { 1921 // Would not normally trigger another layout, so just let it pass through as usual 1922 return true; 1923 } 1924 if (!mLayoutRequesters.contains(view)) { 1925 mLayoutRequesters.add(view); 1926 } 1927 if (!mHandlingLayoutInLayoutRequest) { 1928 // Let the request proceed normally; it will be processed in a second layout pass 1929 // if necessary 1930 return true; 1931 } else { 1932 // Don't let the request proceed during the second layout pass. 1933 // It will post to the next frame instead. 1934 return false; 1935 } 1936 } 1937 1938 private void performLayout(WindowManager.LayoutParams lp, int desiredWindowWidth, 1939 int desiredWindowHeight) { 1940 mLayoutRequested = false; 1941 mScrollMayChange = true; 1942 mInLayout = true; 1943 1944 final View host = mView; 1945 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) { 1946 Log.v(TAG, "Laying out " + host + " to (" + 1947 host.getMeasuredWidth() + ", " + host.getMeasuredHeight() + ")"); 1948 } 1949 1950 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "layout"); 1951 try { 1952 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 1953 1954 mInLayout = false; 1955 int numViewsRequestingLayout = mLayoutRequesters.size(); 1956 if (numViewsRequestingLayout > 0) { 1957 // requestLayout() was called during layout. 1958 // If no layout-request flags are set on the requesting views, there is no problem. 1959 // If some requests are still pending, then we need to clear those flags and do 1960 // a full request/measure/layout pass to handle this situation. 1961 ArrayList<View> validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, 1962 false); 1963 if (validLayoutRequesters != null) { 1964 // Set this flag to indicate that any further requests are happening during 1965 // the second pass, which may result in posting those requests to the next 1966 // frame instead 1967 mHandlingLayoutInLayoutRequest = true; 1968 1969 // Process fresh layout requests, then measure and layout 1970 int numValidRequests = validLayoutRequesters.size(); 1971 for (int i = 0; i < numValidRequests; ++i) { 1972 final View view = validLayoutRequesters.get(i); 1973 Log.w("View", "requestLayout() improperly called by " + view + 1974 " during layout: running second layout pass"); 1975 view.requestLayout(); 1976 } 1977 measureHierarchy(host, lp, mView.getContext().getResources(), 1978 desiredWindowWidth, desiredWindowHeight); 1979 mInLayout = true; 1980 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 1981 1982 mHandlingLayoutInLayoutRequest = false; 1983 1984 // Check the valid requests again, this time without checking/clearing the 1985 // layout flags, since requests happening during the second pass get noop'd 1986 validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, true); 1987 if (validLayoutRequesters != null) { 1988 final ArrayList<View> finalRequesters = validLayoutRequesters; 1989 // Post second-pass requests to the next frame 1990 getRunQueue().post(new Runnable() { 1991 @Override 1992 public void run() { 1993 int numValidRequests = finalRequesters.size(); 1994 for (int i = 0; i < numValidRequests; ++i) { 1995 final View view = finalRequesters.get(i); 1996 Log.w("View", "requestLayout() improperly called by " + view + 1997 " during second layout pass: posting in next frame"); 1998 view.requestLayout(); 1999 } 2000 } 2001 }); 2002 } 2003 } 2004 2005 } 2006 } finally { 2007 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2008 } 2009 mInLayout = false; 2010 } 2011 2012 /** 2013 * This method is called during layout when there have been calls to requestLayout() during 2014 * layout. It walks through the list of views that requested layout to determine which ones 2015 * still need it, based on visibility in the hierarchy and whether they have already been 2016 * handled (as is usually the case with ListView children). 2017 * 2018 * @param layoutRequesters The list of views that requested layout during layout 2019 * @param secondLayoutRequests Whether the requests were issued during the second layout pass. 2020 * If so, the FORCE_LAYOUT flag was not set on requesters. 2021 * @return A list of the actual views that still need to be laid out. 2022 */ 2023 private ArrayList<View> getValidLayoutRequesters(ArrayList<View> layoutRequesters, 2024 boolean secondLayoutRequests) { 2025 2026 int numViewsRequestingLayout = layoutRequesters.size(); 2027 ArrayList<View> validLayoutRequesters = null; 2028 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2029 View view = layoutRequesters.get(i); 2030 if (view != null && view.mAttachInfo != null && view.mParent != null && 2031 (secondLayoutRequests || (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) == 2032 View.PFLAG_FORCE_LAYOUT)) { 2033 boolean gone = false; 2034 View parent = view; 2035 // Only trigger new requests for views in a non-GONE hierarchy 2036 while (parent != null) { 2037 if ((parent.mViewFlags & View.VISIBILITY_MASK) == View.GONE) { 2038 gone = true; 2039 break; 2040 } 2041 if (parent.mParent instanceof View) { 2042 parent = (View) parent.mParent; 2043 } else { 2044 parent = null; 2045 } 2046 } 2047 if (!gone) { 2048 if (validLayoutRequesters == null) { 2049 validLayoutRequesters = new ArrayList<View>(); 2050 } 2051 validLayoutRequesters.add(view); 2052 } 2053 } 2054 } 2055 if (!secondLayoutRequests) { 2056 // If we're checking the layout flags, then we need to clean them up also 2057 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2058 View view = layoutRequesters.get(i); 2059 while (view != null && 2060 (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) != 0) { 2061 view.mPrivateFlags &= ~View.PFLAG_FORCE_LAYOUT; 2062 if (view.mParent instanceof View) { 2063 view = (View) view.mParent; 2064 } else { 2065 view = null; 2066 } 2067 } 2068 } 2069 } 2070 layoutRequesters.clear(); 2071 return validLayoutRequesters; 2072 } 2073 2074 public void requestTransparentRegion(View child) { 2075 // the test below should not fail unless someone is messing with us 2076 checkThread(); 2077 if (mView == child) { 2078 mView.mPrivateFlags |= View.PFLAG_REQUEST_TRANSPARENT_REGIONS; 2079 // Need to make sure we re-evaluate the window attributes next 2080 // time around, to ensure the window has the correct format. 2081 mWindowAttributesChanged = true; 2082 mWindowAttributesChangesFlag = 0; 2083 requestLayout(); 2084 } 2085 } 2086 2087 /** 2088 * Figures out the measure spec for the root view in a window based on it's 2089 * layout params. 2090 * 2091 * @param windowSize 2092 * The available width or height of the window 2093 * 2094 * @param rootDimension 2095 * The layout params for one dimension (width or height) of the 2096 * window. 2097 * 2098 * @return The measure spec to use to measure the root view. 2099 */ 2100 private static int getRootMeasureSpec(int windowSize, int rootDimension) { 2101 int measureSpec; 2102 switch (rootDimension) { 2103 2104 case ViewGroup.LayoutParams.MATCH_PARENT: 2105 // Window can't resize. Force root view to be windowSize. 2106 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.EXACTLY); 2107 break; 2108 case ViewGroup.LayoutParams.WRAP_CONTENT: 2109 // Window can resize. Set max size for root view. 2110 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.AT_MOST); 2111 break; 2112 default: 2113 // Window wants to be an exact size. Force root view to be that size. 2114 measureSpec = MeasureSpec.makeMeasureSpec(rootDimension, MeasureSpec.EXACTLY); 2115 break; 2116 } 2117 return measureSpec; 2118 } 2119 2120 int mHardwareYOffset; 2121 int mResizeAlpha; 2122 final Paint mResizePaint = new Paint(); 2123 2124 public void onHardwarePreDraw(HardwareCanvas canvas) { 2125 canvas.translate(0, -mHardwareYOffset); 2126 } 2127 2128 public void onHardwarePostDraw(HardwareCanvas canvas) { 2129 if (mResizeBuffer != null) { 2130 mResizePaint.setAlpha(mResizeAlpha); 2131 canvas.drawHardwareLayer(mResizeBuffer, 0.0f, mHardwareYOffset, mResizePaint); 2132 } 2133 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2134 } 2135 2136 /** 2137 * @hide 2138 */ 2139 void outputDisplayList(View view) { 2140 if (mAttachInfo != null && mAttachInfo.mHardwareCanvas != null) { 2141 DisplayList displayList = view.getDisplayList(); 2142 if (displayList != null) { 2143 mAttachInfo.mHardwareCanvas.outputDisplayList(displayList); 2144 } 2145 } 2146 } 2147 2148 /** 2149 * @see #PROPERTY_PROFILE_RENDERING 2150 */ 2151 private void profileRendering(boolean enabled) { 2152 if (mProfileRendering) { 2153 mRenderProfilingEnabled = enabled; 2154 2155 if (mRenderProfiler != null) { 2156 mChoreographer.removeFrameCallback(mRenderProfiler); 2157 } 2158 if (mRenderProfilingEnabled) { 2159 if (mRenderProfiler == null) { 2160 mRenderProfiler = new Choreographer.FrameCallback() { 2161 @Override 2162 public void doFrame(long frameTimeNanos) { 2163 mDirty.set(0, 0, mWidth, mHeight); 2164 scheduleTraversals(); 2165 if (mRenderProfilingEnabled) { 2166 mChoreographer.postFrameCallback(mRenderProfiler); 2167 } 2168 } 2169 }; 2170 } 2171 mChoreographer.postFrameCallback(mRenderProfiler); 2172 } else { 2173 mRenderProfiler = null; 2174 } 2175 } 2176 } 2177 2178 /** 2179 * Called from draw() when DEBUG_FPS is enabled 2180 */ 2181 private void trackFPS() { 2182 // Tracks frames per second drawn. First value in a series of draws may be bogus 2183 // because it down not account for the intervening idle time 2184 long nowTime = System.currentTimeMillis(); 2185 if (mFpsStartTime < 0) { 2186 mFpsStartTime = mFpsPrevTime = nowTime; 2187 mFpsNumFrames = 0; 2188 } else { 2189 ++mFpsNumFrames; 2190 String thisHash = Integer.toHexString(System.identityHashCode(this)); 2191 long frameTime = nowTime - mFpsPrevTime; 2192 long totalTime = nowTime - mFpsStartTime; 2193 Log.v(TAG, "0x" + thisHash + "\tFrame time:\t" + frameTime); 2194 mFpsPrevTime = nowTime; 2195 if (totalTime > 1000) { 2196 float fps = (float) mFpsNumFrames * 1000 / totalTime; 2197 Log.v(TAG, "0x" + thisHash + "\tFPS:\t" + fps); 2198 mFpsStartTime = nowTime; 2199 mFpsNumFrames = 0; 2200 } 2201 } 2202 } 2203 2204 private void performDraw() { 2205 if (!mAttachInfo.mScreenOn && !mReportNextDraw) { 2206 return; 2207 } 2208 2209 final boolean fullRedrawNeeded = mFullRedrawNeeded; 2210 mFullRedrawNeeded = false; 2211 2212 mIsDrawing = true; 2213 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "draw"); 2214 try { 2215 draw(fullRedrawNeeded); 2216 } finally { 2217 mIsDrawing = false; 2218 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2219 } 2220 2221 if (mReportNextDraw) { 2222 mReportNextDraw = false; 2223 2224 if (LOCAL_LOGV) { 2225 Log.v(TAG, "FINISHED DRAWING: " + mWindowAttributes.getTitle()); 2226 } 2227 if (mSurfaceHolder != null && mSurface.isValid()) { 2228 mSurfaceHolderCallback.surfaceRedrawNeeded(mSurfaceHolder); 2229 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 2230 if (callbacks != null) { 2231 for (SurfaceHolder.Callback c : callbacks) { 2232 if (c instanceof SurfaceHolder.Callback2) { 2233 ((SurfaceHolder.Callback2)c).surfaceRedrawNeeded( 2234 mSurfaceHolder); 2235 } 2236 } 2237 } 2238 } 2239 try { 2240 mWindowSession.finishDrawing(mWindow); 2241 } catch (RemoteException e) { 2242 } 2243 } 2244 } 2245 2246 private void draw(boolean fullRedrawNeeded) { 2247 Surface surface = mSurface; 2248 if (!surface.isValid()) { 2249 return; 2250 } 2251 2252 if (DEBUG_FPS) { 2253 trackFPS(); 2254 } 2255 2256 if (!sFirstDrawComplete) { 2257 synchronized (sFirstDrawHandlers) { 2258 sFirstDrawComplete = true; 2259 final int count = sFirstDrawHandlers.size(); 2260 for (int i = 0; i< count; i++) { 2261 mHandler.post(sFirstDrawHandlers.get(i)); 2262 } 2263 } 2264 } 2265 2266 scrollToRectOrFocus(null, false); 2267 2268 final AttachInfo attachInfo = mAttachInfo; 2269 if (attachInfo.mViewScrollChanged) { 2270 attachInfo.mViewScrollChanged = false; 2271 attachInfo.mTreeObserver.dispatchOnScrollChanged(); 2272 } 2273 2274 int yoff; 2275 boolean animating = mScroller != null && mScroller.computeScrollOffset(); 2276 if (animating) { 2277 yoff = mScroller.getCurrY(); 2278 } else { 2279 yoff = mScrollY; 2280 } 2281 if (mCurScrollY != yoff) { 2282 mCurScrollY = yoff; 2283 fullRedrawNeeded = true; 2284 } 2285 2286 final float appScale = attachInfo.mApplicationScale; 2287 final boolean scalingRequired = attachInfo.mScalingRequired; 2288 2289 int resizeAlpha = 0; 2290 if (mResizeBuffer != null) { 2291 long deltaTime = SystemClock.uptimeMillis() - mResizeBufferStartTime; 2292 if (deltaTime < mResizeBufferDuration) { 2293 float amt = deltaTime/(float) mResizeBufferDuration; 2294 amt = mResizeInterpolator.getInterpolation(amt); 2295 animating = true; 2296 resizeAlpha = 255 - (int)(amt*255); 2297 } else { 2298 disposeResizeBuffer(); 2299 } 2300 } 2301 2302 final Rect dirty = mDirty; 2303 if (mSurfaceHolder != null) { 2304 // The app owns the surface, we won't draw. 2305 dirty.setEmpty(); 2306 if (animating) { 2307 if (mScroller != null) { 2308 mScroller.abortAnimation(); 2309 } 2310 disposeResizeBuffer(); 2311 } 2312 return; 2313 } 2314 2315 if (fullRedrawNeeded) { 2316 attachInfo.mIgnoreDirtyState = true; 2317 dirty.set(0, 0, (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 2318 } 2319 2320 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2321 Log.v(TAG, "Draw " + mView + "/" 2322 + mWindowAttributes.getTitle() 2323 + ": dirty={" + dirty.left + "," + dirty.top 2324 + "," + dirty.right + "," + dirty.bottom + "} surface=" 2325 + surface + " surface.isValid()=" + surface.isValid() + ", appScale:" + 2326 appScale + ", width=" + mWidth + ", height=" + mHeight); 2327 } 2328 2329 invalidateDisplayLists(); 2330 2331 attachInfo.mTreeObserver.dispatchOnDraw(); 2332 2333 if (!dirty.isEmpty() || mIsAnimating) { 2334 if (attachInfo.mHardwareRenderer != null && attachInfo.mHardwareRenderer.isEnabled()) { 2335 // Draw with hardware renderer. 2336 mIsAnimating = false; 2337 mHardwareYOffset = yoff; 2338 mResizeAlpha = resizeAlpha; 2339 2340 mCurrentDirty.set(dirty); 2341 dirty.setEmpty(); 2342 2343 attachInfo.mHardwareRenderer.draw(mView, attachInfo, this, 2344 animating ? null : mCurrentDirty); 2345 } else { 2346 // If we get here with a disabled & requested hardware renderer, something went 2347 // wrong (an invalidate posted right before we destroyed the hardware surface 2348 // for instance) so we should just bail out. Locking the surface with software 2349 // rendering at this point would lock it forever and prevent hardware renderer 2350 // from doing its job when it comes back. 2351 // Before we request a new frame we must however attempt to reinitiliaze the 2352 // hardware renderer if it's in requested state. This would happen after an 2353 // eglTerminate() for instance. 2354 if (attachInfo.mHardwareRenderer != null && 2355 !attachInfo.mHardwareRenderer.isEnabled() && 2356 attachInfo.mHardwareRenderer.isRequested()) { 2357 2358 try { 2359 attachInfo.mHardwareRenderer.initializeIfNeeded(mWidth, mHeight, 2360 mHolder.getSurface()); 2361 } catch (Surface.OutOfResourcesException e) { 2362 handleOutOfResourcesException(e); 2363 return; 2364 } 2365 2366 mFullRedrawNeeded = true; 2367 scheduleTraversals(); 2368 return; 2369 } 2370 2371 if (!drawSoftware(surface, attachInfo, yoff, scalingRequired, dirty)) { 2372 return; 2373 } 2374 } 2375 } 2376 2377 if (animating) { 2378 mFullRedrawNeeded = true; 2379 scheduleTraversals(); 2380 } 2381 } 2382 2383 /** 2384 * @return true if drawing was succesfull, false if an error occurred 2385 */ 2386 private boolean drawSoftware(Surface surface, AttachInfo attachInfo, int yoff, 2387 boolean scalingRequired, Rect dirty) { 2388 2389 // Draw with software renderer. 2390 Canvas canvas; 2391 try { 2392 int left = dirty.left; 2393 int top = dirty.top; 2394 int right = dirty.right; 2395 int bottom = dirty.bottom; 2396 2397 canvas = mSurface.lockCanvas(dirty); 2398 2399 // The dirty rectangle can be modified by Surface.lockCanvas() 2400 //noinspection ConstantConditions 2401 if (left != dirty.left || top != dirty.top || right != dirty.right || 2402 bottom != dirty.bottom) { 2403 attachInfo.mIgnoreDirtyState = true; 2404 } 2405 2406 // TODO: Do this in native 2407 canvas.setDensity(mDensity); 2408 } catch (Surface.OutOfResourcesException e) { 2409 handleOutOfResourcesException(e); 2410 return false; 2411 } catch (IllegalArgumentException e) { 2412 Log.e(TAG, "Could not lock surface", e); 2413 // Don't assume this is due to out of memory, it could be 2414 // something else, and if it is something else then we could 2415 // kill stuff (or ourself) for no reason. 2416 mLayoutRequested = true; // ask wm for a new surface next time. 2417 return false; 2418 } 2419 2420 try { 2421 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2422 Log.v(TAG, "Surface " + surface + " drawing to bitmap w=" 2423 + canvas.getWidth() + ", h=" + canvas.getHeight()); 2424 //canvas.drawARGB(255, 255, 0, 0); 2425 } 2426 2427 // If this bitmap's format includes an alpha channel, we 2428 // need to clear it before drawing so that the child will 2429 // properly re-composite its drawing on a transparent 2430 // background. This automatically respects the clip/dirty region 2431 // or 2432 // If we are applying an offset, we need to clear the area 2433 // where the offset doesn't appear to avoid having garbage 2434 // left in the blank areas. 2435 if (!canvas.isOpaque() || yoff != 0) { 2436 canvas.drawColor(0, PorterDuff.Mode.CLEAR); 2437 } 2438 2439 dirty.setEmpty(); 2440 mIsAnimating = false; 2441 attachInfo.mDrawingTime = SystemClock.uptimeMillis(); 2442 mView.mPrivateFlags |= View.PFLAG_DRAWN; 2443 2444 if (DEBUG_DRAW) { 2445 Context cxt = mView.getContext(); 2446 Log.i(TAG, "Drawing: package:" + cxt.getPackageName() + 2447 ", metrics=" + cxt.getResources().getDisplayMetrics() + 2448 ", compatibilityInfo=" + cxt.getResources().getCompatibilityInfo()); 2449 } 2450 try { 2451 canvas.translate(0, -yoff); 2452 if (mTranslator != null) { 2453 mTranslator.translateCanvas(canvas); 2454 } 2455 canvas.setScreenDensity(scalingRequired ? mNoncompatDensity : 0); 2456 attachInfo.mSetIgnoreDirtyState = false; 2457 2458 mView.draw(canvas); 2459 2460 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2461 } finally { 2462 if (!attachInfo.mSetIgnoreDirtyState) { 2463 // Only clear the flag if it was not set during the mView.draw() call 2464 attachInfo.mIgnoreDirtyState = false; 2465 } 2466 } 2467 } finally { 2468 try { 2469 surface.unlockCanvasAndPost(canvas); 2470 } catch (IllegalArgumentException e) { 2471 Log.e(TAG, "Could not unlock surface", e); 2472 mLayoutRequested = true; // ask wm for a new surface next time. 2473 //noinspection ReturnInsideFinallyBlock 2474 return false; 2475 } 2476 2477 if (LOCAL_LOGV) { 2478 Log.v(TAG, "Surface " + surface + " unlockCanvasAndPost"); 2479 } 2480 } 2481 return true; 2482 } 2483 2484 /** 2485 * We want to draw a highlight around the current accessibility focused. 2486 * Since adding a style for all possible view is not a viable option we 2487 * have this specialized drawing method. 2488 * 2489 * Note: We are doing this here to be able to draw the highlight for 2490 * virtual views in addition to real ones. 2491 * 2492 * @param canvas The canvas on which to draw. 2493 */ 2494 private void drawAccessibilityFocusedDrawableIfNeeded(Canvas canvas) { 2495 AccessibilityManager manager = AccessibilityManager.getInstance(mView.mContext); 2496 if (!manager.isEnabled() || !manager.isTouchExplorationEnabled()) { 2497 return; 2498 } 2499 if (mAccessibilityFocusedHost == null || mAccessibilityFocusedHost.mAttachInfo == null) { 2500 return; 2501 } 2502 Drawable drawable = getAccessibilityFocusedDrawable(); 2503 if (drawable == null) { 2504 return; 2505 } 2506 AccessibilityNodeProvider provider = 2507 mAccessibilityFocusedHost.getAccessibilityNodeProvider(); 2508 Rect bounds = mView.mAttachInfo.mTmpInvalRect; 2509 if (provider == null) { 2510 mAccessibilityFocusedHost.getBoundsOnScreen(bounds); 2511 } else { 2512 if (mAccessibilityFocusedVirtualView == null) { 2513 return; 2514 } 2515 mAccessibilityFocusedVirtualView.getBoundsInScreen(bounds); 2516 } 2517 bounds.offset(-mAttachInfo.mWindowLeft, -mAttachInfo.mWindowTop); 2518 bounds.intersect(0, 0, mAttachInfo.mViewRootImpl.mWidth, mAttachInfo.mViewRootImpl.mHeight); 2519 drawable.setBounds(bounds); 2520 drawable.draw(canvas); 2521 } 2522 2523 private Drawable getAccessibilityFocusedDrawable() { 2524 if (mAttachInfo != null) { 2525 // Lazily load the accessibility focus drawable. 2526 if (mAttachInfo.mAccessibilityFocusDrawable == null) { 2527 TypedValue value = new TypedValue(); 2528 final boolean resolved = mView.mContext.getTheme().resolveAttribute( 2529 R.attr.accessibilityFocusedDrawable, value, true); 2530 if (resolved) { 2531 mAttachInfo.mAccessibilityFocusDrawable = 2532 mView.mContext.getResources().getDrawable(value.resourceId); 2533 } 2534 } 2535 return mAttachInfo.mAccessibilityFocusDrawable; 2536 } 2537 return null; 2538 } 2539 2540 void invalidateDisplayLists() { 2541 final ArrayList<DisplayList> displayLists = mDisplayLists; 2542 final int count = displayLists.size(); 2543 2544 for (int i = 0; i < count; i++) { 2545 final DisplayList displayList = displayLists.get(i); 2546 if (displayList.isDirty()) { 2547 displayList.clear(); 2548 } 2549 } 2550 2551 displayLists.clear(); 2552 } 2553 2554 /** 2555 * @hide 2556 */ 2557 public void setDrawDuringWindowsAnimating(boolean value) { 2558 mDrawDuringWindowsAnimating = value; 2559 if (value) { 2560 handleDispatchDoneAnimating(); 2561 } 2562 } 2563 2564 boolean scrollToRectOrFocus(Rect rectangle, boolean immediate) { 2565 final View.AttachInfo attachInfo = mAttachInfo; 2566 final Rect ci = attachInfo.mContentInsets; 2567 final Rect vi = attachInfo.mVisibleInsets; 2568 int scrollY = 0; 2569 boolean handled = false; 2570 2571 if (vi.left > ci.left || vi.top > ci.top 2572 || vi.right > ci.right || vi.bottom > ci.bottom) { 2573 // We'll assume that we aren't going to change the scroll 2574 // offset, since we want to avoid that unless it is actually 2575 // going to make the focus visible... otherwise we scroll 2576 // all over the place. 2577 scrollY = mScrollY; 2578 // We can be called for two different situations: during a draw, 2579 // to update the scroll position if the focus has changed (in which 2580 // case 'rectangle' is null), or in response to a 2581 // requestChildRectangleOnScreen() call (in which case 'rectangle' 2582 // is non-null and we just want to scroll to whatever that 2583 // rectangle is). 2584 final View focus = mView.findFocus(); 2585 if (focus == null) { 2586 return false; 2587 } 2588 View lastScrolledFocus = (mLastScrolledFocus != null) ? mLastScrolledFocus.get() : null; 2589 if (focus != lastScrolledFocus) { 2590 // If the focus has changed, then ignore any requests to scroll 2591 // to a rectangle; first we want to make sure the entire focus 2592 // view is visible. 2593 rectangle = null; 2594 } 2595 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Eval scroll: focus=" + focus 2596 + " rectangle=" + rectangle + " ci=" + ci 2597 + " vi=" + vi); 2598 if (focus == lastScrolledFocus && !mScrollMayChange && rectangle == null) { 2599 // Optimization: if the focus hasn't changed since last 2600 // time, and no layout has happened, then just leave things 2601 // as they are. 2602 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Keeping scroll y=" 2603 + mScrollY + " vi=" + vi.toShortString()); 2604 } else { 2605 // We need to determine if the currently focused view is 2606 // within the visible part of the window and, if not, apply 2607 // a pan so it can be seen. 2608 mLastScrolledFocus = new WeakReference<View>(focus); 2609 mScrollMayChange = false; 2610 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Need to scroll?"); 2611 // Try to find the rectangle from the focus view. 2612 if (focus.getGlobalVisibleRect(mVisRect, null)) { 2613 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Root w=" 2614 + mView.getWidth() + " h=" + mView.getHeight() 2615 + " ci=" + ci.toShortString() 2616 + " vi=" + vi.toShortString()); 2617 if (rectangle == null) { 2618 focus.getFocusedRect(mTempRect); 2619 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Focus " + focus 2620 + ": focusRect=" + mTempRect.toShortString()); 2621 if (mView instanceof ViewGroup) { 2622 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 2623 focus, mTempRect); 2624 } 2625 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2626 "Focus in window: focusRect=" 2627 + mTempRect.toShortString() 2628 + " visRect=" + mVisRect.toShortString()); 2629 } else { 2630 mTempRect.set(rectangle); 2631 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2632 "Request scroll to rect: " 2633 + mTempRect.toShortString() 2634 + " visRect=" + mVisRect.toShortString()); 2635 } 2636 if (mTempRect.intersect(mVisRect)) { 2637 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2638 "Focus window visible rect: " 2639 + mTempRect.toShortString()); 2640 if (mTempRect.height() > 2641 (mView.getHeight()-vi.top-vi.bottom)) { 2642 // If the focus simply is not going to fit, then 2643 // best is probably just to leave things as-is. 2644 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2645 "Too tall; leaving scrollY=" + scrollY); 2646 } else if ((mTempRect.top-scrollY) < vi.top) { 2647 scrollY -= vi.top - (mTempRect.top-scrollY); 2648 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2649 "Top covered; scrollY=" + scrollY); 2650 } else if ((mTempRect.bottom-scrollY) 2651 > (mView.getHeight()-vi.bottom)) { 2652 scrollY += (mTempRect.bottom-scrollY) 2653 - (mView.getHeight()-vi.bottom); 2654 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2655 "Bottom covered; scrollY=" + scrollY); 2656 } 2657 handled = true; 2658 } 2659 } 2660 } 2661 } 2662 2663 if (scrollY != mScrollY) { 2664 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Pan scroll changed: old=" 2665 + mScrollY + " , new=" + scrollY); 2666 if (!immediate && mResizeBuffer == null) { 2667 if (mScroller == null) { 2668 mScroller = new Scroller(mView.getContext()); 2669 } 2670 mScroller.startScroll(0, mScrollY, 0, scrollY-mScrollY); 2671 } else if (mScroller != null) { 2672 mScroller.abortAnimation(); 2673 } 2674 mScrollY = scrollY; 2675 } 2676 2677 return handled; 2678 } 2679 2680 /** 2681 * @hide 2682 */ 2683 public View getAccessibilityFocusedHost() { 2684 return mAccessibilityFocusedHost; 2685 } 2686 2687 /** 2688 * @hide 2689 */ 2690 public AccessibilityNodeInfo getAccessibilityFocusedVirtualView() { 2691 return mAccessibilityFocusedVirtualView; 2692 } 2693 2694 void setAccessibilityFocus(View view, AccessibilityNodeInfo node) { 2695 // If we have a virtual view with accessibility focus we need 2696 // to clear the focus and invalidate the virtual view bounds. 2697 if (mAccessibilityFocusedVirtualView != null) { 2698 2699 AccessibilityNodeInfo focusNode = mAccessibilityFocusedVirtualView; 2700 View focusHost = mAccessibilityFocusedHost; 2701 2702 // Wipe the state of the current accessibility focus since 2703 // the call into the provider to clear accessibility focus 2704 // will fire an accessibility event which will end up calling 2705 // this method and we want to have clean state when this 2706 // invocation happens. 2707 mAccessibilityFocusedHost = null; 2708 mAccessibilityFocusedVirtualView = null; 2709 2710 // Clear accessibility focus on the host after clearing state since 2711 // this method may be reentrant. 2712 focusHost.clearAccessibilityFocusNoCallbacks(); 2713 2714 AccessibilityNodeProvider provider = focusHost.getAccessibilityNodeProvider(); 2715 if (provider != null) { 2716 // Invalidate the area of the cleared accessibility focus. 2717 focusNode.getBoundsInParent(mTempRect); 2718 focusHost.invalidate(mTempRect); 2719 // Clear accessibility focus in the virtual node. 2720 final int virtualNodeId = AccessibilityNodeInfo.getVirtualDescendantId( 2721 focusNode.getSourceNodeId()); 2722 provider.performAction(virtualNodeId, 2723 AccessibilityNodeInfo.ACTION_CLEAR_ACCESSIBILITY_FOCUS, null); 2724 } 2725 focusNode.recycle(); 2726 } 2727 if (mAccessibilityFocusedHost != null) { 2728 // Clear accessibility focus in the view. 2729 mAccessibilityFocusedHost.clearAccessibilityFocusNoCallbacks(); 2730 } 2731 2732 // Set the new focus host and node. 2733 mAccessibilityFocusedHost = view; 2734 mAccessibilityFocusedVirtualView = node; 2735 } 2736 2737 public void requestChildFocus(View child, View focused) { 2738 if (DEBUG_INPUT_RESIZE) { 2739 Log.v(TAG, "Request child focus: focus now " + focused); 2740 } 2741 checkThread(); 2742 scheduleTraversals(); 2743 } 2744 2745 public void clearChildFocus(View child) { 2746 if (DEBUG_INPUT_RESIZE) { 2747 Log.v(TAG, "Clearing child focus"); 2748 } 2749 checkThread(); 2750 scheduleTraversals(); 2751 } 2752 2753 @Override 2754 public ViewParent getParentForAccessibility() { 2755 return null; 2756 } 2757 2758 public void focusableViewAvailable(View v) { 2759 checkThread(); 2760 if (mView != null) { 2761 if (!mView.hasFocus()) { 2762 v.requestFocus(); 2763 } else { 2764 // the one case where will transfer focus away from the current one 2765 // is if the current view is a view group that prefers to give focus 2766 // to its children first AND the view is a descendant of it. 2767 View focused = mView.findFocus(); 2768 if (focused instanceof ViewGroup) { 2769 ViewGroup group = (ViewGroup) focused; 2770 if (group.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 2771 && isViewDescendantOf(v, focused)) { 2772 v.requestFocus(); 2773 } 2774 } 2775 } 2776 } 2777 } 2778 2779 public void recomputeViewAttributes(View child) { 2780 checkThread(); 2781 if (mView == child) { 2782 mAttachInfo.mRecomputeGlobalAttributes = true; 2783 if (!mWillDrawSoon) { 2784 scheduleTraversals(); 2785 } 2786 } 2787 } 2788 2789 void dispatchDetachedFromWindow() { 2790 if (mView != null && mView.mAttachInfo != null) { 2791 if (mAttachInfo.mHardwareRenderer != null && 2792 mAttachInfo.mHardwareRenderer.isEnabled()) { 2793 mAttachInfo.mHardwareRenderer.validate(); 2794 } 2795 mAttachInfo.mTreeObserver.dispatchOnWindowAttachedChange(false); 2796 mView.dispatchDetachedFromWindow(); 2797 } 2798 2799 mAccessibilityInteractionConnectionManager.ensureNoConnection(); 2800 mAccessibilityManager.removeAccessibilityStateChangeListener( 2801 mAccessibilityInteractionConnectionManager); 2802 removeSendWindowContentChangedCallback(); 2803 2804 destroyHardwareRenderer(); 2805 2806 setAccessibilityFocus(null, null); 2807 2808 mView.assignParent(null); 2809 mView = null; 2810 mAttachInfo.mRootView = null; 2811 mAttachInfo.mSurface = null; 2812 2813 mSurface.release(); 2814 2815 if (mInputQueueCallback != null && mInputQueue != null) { 2816 mInputQueueCallback.onInputQueueDestroyed(mInputQueue); 2817 mInputQueue.dispose(); 2818 mInputQueueCallback = null; 2819 mInputQueue = null; 2820 } 2821 if (mInputEventReceiver != null) { 2822 mInputEventReceiver.dispose(); 2823 mInputEventReceiver = null; 2824 } 2825 try { 2826 mWindowSession.remove(mWindow); 2827 } catch (RemoteException e) { 2828 } 2829 2830 // Dispose the input channel after removing the window so the Window Manager 2831 // doesn't interpret the input channel being closed as an abnormal termination. 2832 if (mInputChannel != null) { 2833 mInputChannel.dispose(); 2834 mInputChannel = null; 2835 } 2836 2837 unscheduleTraversals(); 2838 } 2839 2840 void updateConfiguration(Configuration config, boolean force) { 2841 if (DEBUG_CONFIGURATION) Log.v(TAG, 2842 "Applying new config to window " 2843 + mWindowAttributes.getTitle() 2844 + ": " + config); 2845 2846 CompatibilityInfo ci = mCompatibilityInfo.getIfNeeded(); 2847 if (ci != null) { 2848 config = new Configuration(config); 2849 ci.applyToConfiguration(mNoncompatDensity, config); 2850 } 2851 2852 synchronized (sConfigCallbacks) { 2853 for (int i=sConfigCallbacks.size()-1; i>=0; i--) { 2854 sConfigCallbacks.get(i).onConfigurationChanged(config); 2855 } 2856 } 2857 if (mView != null) { 2858 // At this point the resources have been updated to 2859 // have the most recent config, whatever that is. Use 2860 // the one in them which may be newer. 2861 config = mView.getResources().getConfiguration(); 2862 if (force || mLastConfiguration.diff(config) != 0) { 2863 final int lastLayoutDirection = mLastConfiguration.getLayoutDirection(); 2864 final int currentLayoutDirection = config.getLayoutDirection(); 2865 mLastConfiguration.setTo(config); 2866 if (lastLayoutDirection != currentLayoutDirection && 2867 mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 2868 mView.setLayoutDirection(currentLayoutDirection); 2869 } 2870 mView.dispatchConfigurationChanged(config); 2871 } 2872 } 2873 } 2874 2875 /** 2876 * Return true if child is an ancestor of parent, (or equal to the parent). 2877 */ 2878 public static boolean isViewDescendantOf(View child, View parent) { 2879 if (child == parent) { 2880 return true; 2881 } 2882 2883 final ViewParent theParent = child.getParent(); 2884 return (theParent instanceof ViewGroup) && isViewDescendantOf((View) theParent, parent); 2885 } 2886 2887 private static void forceLayout(View view) { 2888 view.forceLayout(); 2889 if (view instanceof ViewGroup) { 2890 ViewGroup group = (ViewGroup) view; 2891 final int count = group.getChildCount(); 2892 for (int i = 0; i < count; i++) { 2893 forceLayout(group.getChildAt(i)); 2894 } 2895 } 2896 } 2897 2898 private final static int MSG_INVALIDATE = 1; 2899 private final static int MSG_INVALIDATE_RECT = 2; 2900 private final static int MSG_DIE = 3; 2901 private final static int MSG_RESIZED = 4; 2902 private final static int MSG_RESIZED_REPORT = 5; 2903 private final static int MSG_WINDOW_FOCUS_CHANGED = 6; 2904 private final static int MSG_DISPATCH_KEY = 7; 2905 private final static int MSG_DISPATCH_APP_VISIBILITY = 8; 2906 private final static int MSG_DISPATCH_GET_NEW_SURFACE = 9; 2907 private final static int MSG_DISPATCH_KEY_FROM_IME = 11; 2908 private final static int MSG_FINISH_INPUT_CONNECTION = 12; 2909 private final static int MSG_CHECK_FOCUS = 13; 2910 private final static int MSG_CLOSE_SYSTEM_DIALOGS = 14; 2911 private final static int MSG_DISPATCH_DRAG_EVENT = 15; 2912 private final static int MSG_DISPATCH_DRAG_LOCATION_EVENT = 16; 2913 private final static int MSG_DISPATCH_SYSTEM_UI_VISIBILITY = 17; 2914 private final static int MSG_UPDATE_CONFIGURATION = 18; 2915 private final static int MSG_PROCESS_INPUT_EVENTS = 19; 2916 private final static int MSG_DISPATCH_SCREEN_STATE = 20; 2917 private final static int MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST = 21; 2918 private final static int MSG_DISPATCH_DONE_ANIMATING = 22; 2919 private final static int MSG_INVALIDATE_WORLD = 23; 2920 private final static int MSG_WINDOW_MOVED = 24; 2921 private final static int MSG_FLUSH_LAYER_UPDATES = 25; 2922 2923 final class ViewRootHandler extends Handler { 2924 @Override 2925 public String getMessageName(Message message) { 2926 switch (message.what) { 2927 case MSG_INVALIDATE: 2928 return "MSG_INVALIDATE"; 2929 case MSG_INVALIDATE_RECT: 2930 return "MSG_INVALIDATE_RECT"; 2931 case MSG_DIE: 2932 return "MSG_DIE"; 2933 case MSG_RESIZED: 2934 return "MSG_RESIZED"; 2935 case MSG_RESIZED_REPORT: 2936 return "MSG_RESIZED_REPORT"; 2937 case MSG_WINDOW_FOCUS_CHANGED: 2938 return "MSG_WINDOW_FOCUS_CHANGED"; 2939 case MSG_DISPATCH_KEY: 2940 return "MSG_DISPATCH_KEY"; 2941 case MSG_DISPATCH_APP_VISIBILITY: 2942 return "MSG_DISPATCH_APP_VISIBILITY"; 2943 case MSG_DISPATCH_GET_NEW_SURFACE: 2944 return "MSG_DISPATCH_GET_NEW_SURFACE"; 2945 case MSG_DISPATCH_KEY_FROM_IME: 2946 return "MSG_DISPATCH_KEY_FROM_IME"; 2947 case MSG_FINISH_INPUT_CONNECTION: 2948 return "MSG_FINISH_INPUT_CONNECTION"; 2949 case MSG_CHECK_FOCUS: 2950 return "MSG_CHECK_FOCUS"; 2951 case MSG_CLOSE_SYSTEM_DIALOGS: 2952 return "MSG_CLOSE_SYSTEM_DIALOGS"; 2953 case MSG_DISPATCH_DRAG_EVENT: 2954 return "MSG_DISPATCH_DRAG_EVENT"; 2955 case MSG_DISPATCH_DRAG_LOCATION_EVENT: 2956 return "MSG_DISPATCH_DRAG_LOCATION_EVENT"; 2957 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: 2958 return "MSG_DISPATCH_SYSTEM_UI_VISIBILITY"; 2959 case MSG_UPDATE_CONFIGURATION: 2960 return "MSG_UPDATE_CONFIGURATION"; 2961 case MSG_PROCESS_INPUT_EVENTS: 2962 return "MSG_PROCESS_INPUT_EVENTS"; 2963 case MSG_DISPATCH_SCREEN_STATE: 2964 return "MSG_DISPATCH_SCREEN_STATE"; 2965 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: 2966 return "MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST"; 2967 case MSG_DISPATCH_DONE_ANIMATING: 2968 return "MSG_DISPATCH_DONE_ANIMATING"; 2969 case MSG_WINDOW_MOVED: 2970 return "MSG_WINDOW_MOVED"; 2971 case MSG_FLUSH_LAYER_UPDATES: 2972 return "MSG_FLUSH_LAYER_UPDATES"; 2973 } 2974 return super.getMessageName(message); 2975 } 2976 2977 @Override 2978 public void handleMessage(Message msg) { 2979 switch (msg.what) { 2980 case MSG_INVALIDATE: 2981 ((View) msg.obj).invalidate(); 2982 break; 2983 case MSG_INVALIDATE_RECT: 2984 final View.AttachInfo.InvalidateInfo info = (View.AttachInfo.InvalidateInfo) msg.obj; 2985 info.target.invalidate(info.left, info.top, info.right, info.bottom); 2986 info.recycle(); 2987 break; 2988 case MSG_PROCESS_INPUT_EVENTS: 2989 mProcessInputEventsScheduled = false; 2990 doProcessInputEvents(); 2991 break; 2992 case MSG_DISPATCH_APP_VISIBILITY: 2993 handleAppVisibility(msg.arg1 != 0); 2994 break; 2995 case MSG_DISPATCH_GET_NEW_SURFACE: 2996 handleGetNewSurface(); 2997 break; 2998 case MSG_RESIZED: { 2999 // Recycled in the fall through... 3000 SomeArgs args = (SomeArgs) msg.obj; 3001 if (mWinFrame.equals(args.arg1) 3002 && mPendingOverscanInsets.equals(args.arg5) 3003 && mPendingContentInsets.equals(args.arg2) 3004 && mPendingVisibleInsets.equals(args.arg3) 3005 && args.arg4 == null) { 3006 break; 3007 } 3008 } // fall through... 3009 case MSG_RESIZED_REPORT: 3010 if (mAdded) { 3011 SomeArgs args = (SomeArgs) msg.obj; 3012 3013 Configuration config = (Configuration) args.arg4; 3014 if (config != null) { 3015 updateConfiguration(config, false); 3016 } 3017 3018 mWinFrame.set((Rect) args.arg1); 3019 mPendingOverscanInsets.set((Rect) args.arg5); 3020 mPendingContentInsets.set((Rect) args.arg2); 3021 mPendingVisibleInsets.set((Rect) args.arg3); 3022 3023 args.recycle(); 3024 3025 if (msg.what == MSG_RESIZED_REPORT) { 3026 mReportNextDraw = true; 3027 } 3028 3029 if (mView != null) { 3030 forceLayout(mView); 3031 } 3032 3033 requestLayout(); 3034 } 3035 break; 3036 case MSG_WINDOW_MOVED: 3037 if (mAdded) { 3038 final int w = mWinFrame.width(); 3039 final int h = mWinFrame.height(); 3040 final int l = msg.arg1; 3041 final int t = msg.arg2; 3042 mWinFrame.left = l; 3043 mWinFrame.right = l + w; 3044 mWinFrame.top = t; 3045 mWinFrame.bottom = t + h; 3046 3047 if (mView != null) { 3048 forceLayout(mView); 3049 } 3050 requestLayout(); 3051 } 3052 break; 3053 case MSG_WINDOW_FOCUS_CHANGED: { 3054 if (mAdded) { 3055 boolean hasWindowFocus = msg.arg1 != 0; 3056 mAttachInfo.mHasWindowFocus = hasWindowFocus; 3057 3058 profileRendering(hasWindowFocus); 3059 3060 if (hasWindowFocus) { 3061 boolean inTouchMode = msg.arg2 != 0; 3062 ensureTouchModeLocally(inTouchMode); 3063 3064 if (mAttachInfo.mHardwareRenderer != null && mSurface.isValid()){ 3065 mFullRedrawNeeded = true; 3066 try { 3067 mAttachInfo.mHardwareRenderer.initializeIfNeeded( 3068 mWidth, mHeight, mHolder.getSurface()); 3069 } catch (Surface.OutOfResourcesException e) { 3070 Log.e(TAG, "OutOfResourcesException locking surface", e); 3071 try { 3072 if (!mWindowSession.outOfMemory(mWindow)) { 3073 Slog.w(TAG, "No processes killed for memory; killing self"); 3074 Process.killProcess(Process.myPid()); 3075 } 3076 } catch (RemoteException ex) { 3077 } 3078 // Retry in a bit. 3079 sendMessageDelayed(obtainMessage(msg.what, msg.arg1, msg.arg2), 500); 3080 return; 3081 } 3082 } 3083 } 3084 3085 mLastWasImTarget = WindowManager.LayoutParams 3086 .mayUseInputMethod(mWindowAttributes.flags); 3087 3088 InputMethodManager imm = InputMethodManager.peekInstance(); 3089 if (mView != null) { 3090 if (hasWindowFocus && imm != null && mLastWasImTarget) { 3091 imm.startGettingWindowFocus(mView); 3092 } 3093 mAttachInfo.mKeyDispatchState.reset(); 3094 mView.dispatchWindowFocusChanged(hasWindowFocus); 3095 mAttachInfo.mTreeObserver.dispatchOnWindowFocusChange(hasWindowFocus); 3096 } 3097 3098 // Note: must be done after the focus change callbacks, 3099 // so all of the view state is set up correctly. 3100 if (hasWindowFocus) { 3101 if (imm != null && mLastWasImTarget) { 3102 imm.onWindowFocus(mView, mView.findFocus(), 3103 mWindowAttributes.softInputMode, 3104 !mHasHadWindowFocus, mWindowAttributes.flags); 3105 } 3106 // Clear the forward bit. We can just do this directly, since 3107 // the window manager doesn't care about it. 3108 mWindowAttributes.softInputMode &= 3109 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3110 ((WindowManager.LayoutParams)mView.getLayoutParams()) 3111 .softInputMode &= 3112 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3113 mHasHadWindowFocus = true; 3114 } 3115 3116 setAccessibilityFocus(null, null); 3117 3118 if (mView != null && mAccessibilityManager.isEnabled()) { 3119 if (hasWindowFocus) { 3120 mView.sendAccessibilityEvent( 3121 AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 3122 } 3123 } 3124 } 3125 } break; 3126 case MSG_DIE: 3127 doDie(); 3128 break; 3129 case MSG_DISPATCH_KEY: { 3130 KeyEvent event = (KeyEvent)msg.obj; 3131 enqueueInputEvent(event, null, 0, true); 3132 } break; 3133 case MSG_DISPATCH_KEY_FROM_IME: { 3134 if (LOCAL_LOGV) Log.v( 3135 TAG, "Dispatching key " 3136 + msg.obj + " from IME to " + mView); 3137 KeyEvent event = (KeyEvent)msg.obj; 3138 if ((event.getFlags()&KeyEvent.FLAG_FROM_SYSTEM) != 0) { 3139 // The IME is trying to say this event is from the 3140 // system! Bad bad bad! 3141 //noinspection UnusedAssignment 3142 event = KeyEvent.changeFlags(event, event.getFlags() & ~KeyEvent.FLAG_FROM_SYSTEM); 3143 } 3144 enqueueInputEvent(event, null, QueuedInputEvent.FLAG_DELIVER_POST_IME, true); 3145 } break; 3146 case MSG_FINISH_INPUT_CONNECTION: { 3147 InputMethodManager imm = InputMethodManager.peekInstance(); 3148 if (imm != null) { 3149 imm.reportFinishInputConnection((InputConnection)msg.obj); 3150 } 3151 } break; 3152 case MSG_CHECK_FOCUS: { 3153 InputMethodManager imm = InputMethodManager.peekInstance(); 3154 if (imm != null) { 3155 imm.checkFocus(); 3156 } 3157 } break; 3158 case MSG_CLOSE_SYSTEM_DIALOGS: { 3159 if (mView != null) { 3160 mView.onCloseSystemDialogs((String)msg.obj); 3161 } 3162 } break; 3163 case MSG_DISPATCH_DRAG_EVENT: 3164 case MSG_DISPATCH_DRAG_LOCATION_EVENT: { 3165 DragEvent event = (DragEvent)msg.obj; 3166 event.mLocalState = mLocalDragState; // only present when this app called startDrag() 3167 handleDragEvent(event); 3168 } break; 3169 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: { 3170 handleDispatchSystemUiVisibilityChanged((SystemUiVisibilityInfo) msg.obj); 3171 } break; 3172 case MSG_UPDATE_CONFIGURATION: { 3173 Configuration config = (Configuration)msg.obj; 3174 if (config.isOtherSeqNewer(mLastConfiguration)) { 3175 config = mLastConfiguration; 3176 } 3177 updateConfiguration(config, false); 3178 } break; 3179 case MSG_DISPATCH_SCREEN_STATE: { 3180 if (mView != null) { 3181 handleScreenStateChange(msg.arg1 == 1); 3182 } 3183 } break; 3184 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: { 3185 setAccessibilityFocus(null, null); 3186 } break; 3187 case MSG_DISPATCH_DONE_ANIMATING: { 3188 handleDispatchDoneAnimating(); 3189 } break; 3190 case MSG_INVALIDATE_WORLD: { 3191 if (mView != null) { 3192 invalidateWorld(mView); 3193 } 3194 } break; 3195 case MSG_FLUSH_LAYER_UPDATES: { 3196 flushHardwareLayerUpdates(); 3197 } break; 3198 } 3199 } 3200 } 3201 3202 final ViewRootHandler mHandler = new ViewRootHandler(); 3203 3204 /** 3205 * Something in the current window tells us we need to change the touch mode. For 3206 * example, we are not in touch mode, and the user touches the screen. 3207 * 3208 * If the touch mode has changed, tell the window manager, and handle it locally. 3209 * 3210 * @param inTouchMode Whether we want to be in touch mode. 3211 * @return True if the touch mode changed and focus changed was changed as a result 3212 */ 3213 boolean ensureTouchMode(boolean inTouchMode) { 3214 if (DBG) Log.d("touchmode", "ensureTouchMode(" + inTouchMode + "), current " 3215 + "touch mode is " + mAttachInfo.mInTouchMode); 3216 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3217 3218 // tell the window manager 3219 try { 3220 mWindowSession.setInTouchMode(inTouchMode); 3221 } catch (RemoteException e) { 3222 throw new RuntimeException(e); 3223 } 3224 3225 // handle the change 3226 return ensureTouchModeLocally(inTouchMode); 3227 } 3228 3229 /** 3230 * Ensure that the touch mode for this window is set, and if it is changing, 3231 * take the appropriate action. 3232 * @param inTouchMode Whether we want to be in touch mode. 3233 * @return True if the touch mode changed and focus changed was changed as a result 3234 */ 3235 private boolean ensureTouchModeLocally(boolean inTouchMode) { 3236 if (DBG) Log.d("touchmode", "ensureTouchModeLocally(" + inTouchMode + "), current " 3237 + "touch mode is " + mAttachInfo.mInTouchMode); 3238 3239 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3240 3241 mAttachInfo.mInTouchMode = inTouchMode; 3242 mAttachInfo.mTreeObserver.dispatchOnTouchModeChanged(inTouchMode); 3243 3244 return (inTouchMode) ? enterTouchMode() : leaveTouchMode(); 3245 } 3246 3247 private boolean enterTouchMode() { 3248 if (mView != null) { 3249 if (mView.hasFocus()) { 3250 // note: not relying on mFocusedView here because this could 3251 // be when the window is first being added, and mFocused isn't 3252 // set yet. 3253 final View focused = mView.findFocus(); 3254 if (focused != null && !focused.isFocusableInTouchMode()) { 3255 final ViewGroup ancestorToTakeFocus = 3256 findAncestorToTakeFocusInTouchMode(focused); 3257 if (ancestorToTakeFocus != null) { 3258 // there is an ancestor that wants focus after its descendants that 3259 // is focusable in touch mode.. give it focus 3260 return ancestorToTakeFocus.requestFocus(); 3261 } else { 3262 // nothing appropriate to have focus in touch mode, clear it out 3263 focused.unFocus(); 3264 return true; 3265 } 3266 } 3267 } 3268 } 3269 return false; 3270 } 3271 3272 /** 3273 * Find an ancestor of focused that wants focus after its descendants and is 3274 * focusable in touch mode. 3275 * @param focused The currently focused view. 3276 * @return An appropriate view, or null if no such view exists. 3277 */ 3278 private static ViewGroup findAncestorToTakeFocusInTouchMode(View focused) { 3279 ViewParent parent = focused.getParent(); 3280 while (parent instanceof ViewGroup) { 3281 final ViewGroup vgParent = (ViewGroup) parent; 3282 if (vgParent.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 3283 && vgParent.isFocusableInTouchMode()) { 3284 return vgParent; 3285 } 3286 if (vgParent.isRootNamespace()) { 3287 return null; 3288 } else { 3289 parent = vgParent.getParent(); 3290 } 3291 } 3292 return null; 3293 } 3294 3295 private boolean leaveTouchMode() { 3296 if (mView != null) { 3297 if (mView.hasFocus()) { 3298 View focusedView = mView.findFocus(); 3299 if (!(focusedView instanceof ViewGroup)) { 3300 // some view has focus, let it keep it 3301 return false; 3302 } else if (((ViewGroup) focusedView).getDescendantFocusability() != 3303 ViewGroup.FOCUS_AFTER_DESCENDANTS) { 3304 // some view group has focus, and doesn't prefer its children 3305 // over itself for focus, so let them keep it. 3306 return false; 3307 } 3308 } 3309 3310 // find the best view to give focus to in this brave new non-touch-mode 3311 // world 3312 final View focused = focusSearch(null, View.FOCUS_DOWN); 3313 if (focused != null) { 3314 return focused.requestFocus(View.FOCUS_DOWN); 3315 } 3316 } 3317 return false; 3318 } 3319 3320 /** 3321 * Base class for implementing a stage in the chain of responsibility 3322 * for processing input events. 3323 * <p> 3324 * Events are delivered to the stage by the {@link #deliver} method. The stage 3325 * then has the choice of finishing the event or forwarding it to the next stage. 3326 * </p> 3327 */ 3328 abstract class InputStage { 3329 private final InputStage mNext; 3330 3331 protected static final int FORWARD = 0; 3332 protected static final int FINISH_HANDLED = 1; 3333 protected static final int FINISH_NOT_HANDLED = 2; 3334 3335 /** 3336 * Creates an input stage. 3337 * @param next The next stage to which events should be forwarded. 3338 */ 3339 public InputStage(InputStage next) { 3340 mNext = next; 3341 } 3342 3343 /** 3344 * Delivers an event to be processed. 3345 */ 3346 public final void deliver(QueuedInputEvent q) { 3347 if ((q.mFlags & QueuedInputEvent.FLAG_FINISHED) != 0) { 3348 forward(q); 3349 } else if (mView == null || !mAdded) { 3350 Slog.w(TAG, "Dropping event due to root view being removed: " + q.mEvent); 3351 finish(q, false); 3352 } else if (!mAttachInfo.mHasWindowFocus && 3353 !q.mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER) && 3354 !isTerminalInputEvent(q.mEvent)) { 3355 // If this is a focused event and the window doesn't currently have input focus, 3356 // then drop this event. This could be an event that came back from the previous 3357 // stage but the window has lost focus in the meantime. 3358 Slog.w(TAG, "Dropping event due to no window focus: " + q.mEvent); 3359 finish(q, false); 3360 } else { 3361 apply(q, onProcess(q)); 3362 } 3363 } 3364 3365 /** 3366 * Marks the the input event as finished then forwards it to the next stage. 3367 */ 3368 protected void finish(QueuedInputEvent q, boolean handled) { 3369 q.mFlags |= QueuedInputEvent.FLAG_FINISHED; 3370 if (handled) { 3371 q.mFlags |= QueuedInputEvent.FLAG_FINISHED_HANDLED; 3372 } 3373 forward(q); 3374 } 3375 3376 /** 3377 * Forwards the event to the next stage. 3378 */ 3379 protected void forward(QueuedInputEvent q) { 3380 onDeliverToNext(q); 3381 } 3382 3383 /** 3384 * Applies a result code from {@link #onProcess} to the specified event. 3385 */ 3386 protected void apply(QueuedInputEvent q, int result) { 3387 if (result == FORWARD) { 3388 forward(q); 3389 } else if (result == FINISH_HANDLED) { 3390 finish(q, true); 3391 } else if (result == FINISH_NOT_HANDLED) { 3392 finish(q, false); 3393 } else { 3394 throw new IllegalArgumentException("Invalid result: " + result); 3395 } 3396 } 3397 3398 /** 3399 * Called when an event is ready to be processed. 3400 * @return A result code indicating how the event was handled. 3401 */ 3402 protected int onProcess(QueuedInputEvent q) { 3403 return FORWARD; 3404 } 3405 3406 /** 3407 * Called when an event is being delivered to the next stage. 3408 */ 3409 protected void onDeliverToNext(QueuedInputEvent q) { 3410 if (mNext != null) { 3411 mNext.deliver(q); 3412 } else { 3413 finishInputEvent(q); 3414 } 3415 } 3416 } 3417 3418 /** 3419 * Base class for implementing an input pipeline stage that supports 3420 * asynchronous and out-of-order processing of input events. 3421 * <p> 3422 * In addition to what a normal input stage can do, an asynchronous 3423 * input stage may also defer an input event that has been delivered to it 3424 * and finish or forward it later. 3425 * </p> 3426 */ 3427 abstract class AsyncInputStage extends InputStage { 3428 private final String mTraceCounter; 3429 3430 private QueuedInputEvent mQueueHead; 3431 private QueuedInputEvent mQueueTail; 3432 private int mQueueLength; 3433 3434 protected static final int DEFER = 3; 3435 3436 /** 3437 * Creates an asynchronous input stage. 3438 * @param next The next stage to which events should be forwarded. 3439 * @param traceCounter The name of a counter to record the size of 3440 * the queue of pending events. 3441 */ 3442 public AsyncInputStage(InputStage next, String traceCounter) { 3443 super(next); 3444 mTraceCounter = traceCounter; 3445 } 3446 3447 /** 3448 * Marks the event as deferred, which is to say that it will be handled 3449 * asynchronously. The caller is responsible for calling {@link #forward} 3450 * or {@link #finish} later when it is done handling the event. 3451 */ 3452 protected void defer(QueuedInputEvent q) { 3453 q.mFlags |= QueuedInputEvent.FLAG_DEFERRED; 3454 enqueue(q); 3455 } 3456 3457 @Override 3458 protected void forward(QueuedInputEvent q) { 3459 // Clear the deferred flag. 3460 q.mFlags &= ~QueuedInputEvent.FLAG_DEFERRED; 3461 3462 // Fast path if the queue is empty. 3463 QueuedInputEvent curr = mQueueHead; 3464 if (curr == null) { 3465 super.forward(q); 3466 return; 3467 } 3468 3469 // Determine whether the event must be serialized behind any others 3470 // before it can be delivered to the next stage. This is done because 3471 // deferred events might be handled out of order by the stage. 3472 final int deviceId = q.mEvent.getDeviceId(); 3473 QueuedInputEvent prev = null; 3474 boolean blocked = false; 3475 while (curr != null && curr != q) { 3476 if (!blocked && deviceId == curr.mEvent.getDeviceId()) { 3477 blocked = true; 3478 } 3479 prev = curr; 3480 curr = curr.mNext; 3481 } 3482 3483 // If the event is blocked, then leave it in the queue to be delivered later. 3484 // Note that the event might not yet be in the queue if it was not previously 3485 // deferred so we will enqueue it if needed. 3486 if (blocked) { 3487 if (curr == null) { 3488 enqueue(q); 3489 } 3490 return; 3491 } 3492 3493 // The event is not blocked. Deliver it immediately. 3494 if (curr != null) { 3495 curr = curr.mNext; 3496 dequeue(q, prev); 3497 } 3498 super.forward(q); 3499 3500 // Dequeuing this event may have unblocked successors. Deliver them. 3501 while (curr != null) { 3502 if (deviceId == curr.mEvent.getDeviceId()) { 3503 if ((curr.mFlags & QueuedInputEvent.FLAG_DEFERRED) != 0) { 3504 break; 3505 } 3506 QueuedInputEvent next = curr.mNext; 3507 dequeue(curr, prev); 3508 super.forward(curr); 3509 curr = next; 3510 } else { 3511 prev = curr; 3512 curr = curr.mNext; 3513 } 3514 } 3515 } 3516 3517 @Override 3518 protected void apply(QueuedInputEvent q, int result) { 3519 if (result == DEFER) { 3520 defer(q); 3521 } else { 3522 super.apply(q, result); 3523 } 3524 } 3525 3526 private void enqueue(QueuedInputEvent q) { 3527 if (mQueueTail == null) { 3528 mQueueHead = q; 3529 mQueueTail = q; 3530 } else { 3531 mQueueTail.mNext = q; 3532 mQueueTail = q; 3533 } 3534 3535 mQueueLength += 1; 3536 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 3537 } 3538 3539 private void dequeue(QueuedInputEvent q, QueuedInputEvent prev) { 3540 if (prev == null) { 3541 mQueueHead = q.mNext; 3542 } else { 3543 prev.mNext = q.mNext; 3544 } 3545 if (mQueueTail == q) { 3546 mQueueTail = prev; 3547 } 3548 q.mNext = null; 3549 3550 mQueueLength -= 1; 3551 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 3552 } 3553 } 3554 3555 /** 3556 * Delivers pre-ime input events to a native activity. 3557 * Does not support pointer events. 3558 */ 3559 final class NativePreImeInputStage extends AsyncInputStage 3560 implements InputQueue.FinishedInputEventCallback { 3561 public NativePreImeInputStage(InputStage next, String traceCounter) { 3562 super(next, traceCounter); 3563 } 3564 3565 @Override 3566 protected int onProcess(QueuedInputEvent q) { 3567 if (mInputQueue != null && q.mEvent instanceof KeyEvent) { 3568 mInputQueue.sendInputEvent(q.mEvent, q, true, this); 3569 return DEFER; 3570 } 3571 return FORWARD; 3572 } 3573 3574 @Override 3575 public void onFinishedInputEvent(Object token, boolean handled) { 3576 QueuedInputEvent q = (QueuedInputEvent)token; 3577 if (handled) { 3578 finish(q, true); 3579 return; 3580 } 3581 forward(q); 3582 } 3583 } 3584 3585 /** 3586 * Delivers pre-ime input events to the view hierarchy. 3587 * Does not support pointer events. 3588 */ 3589 final class ViewPreImeInputStage extends InputStage { 3590 public ViewPreImeInputStage(InputStage next) { 3591 super(next); 3592 } 3593 3594 @Override 3595 protected int onProcess(QueuedInputEvent q) { 3596 if (q.mEvent instanceof KeyEvent) { 3597 return processKeyEvent(q); 3598 } 3599 return FORWARD; 3600 } 3601 3602 private int processKeyEvent(QueuedInputEvent q) { 3603 final KeyEvent event = (KeyEvent)q.mEvent; 3604 if (mView.dispatchKeyEventPreIme(event)) { 3605 return FINISH_HANDLED; 3606 } 3607 return FORWARD; 3608 } 3609 } 3610 3611 /** 3612 * Delivers input events to the ime. 3613 * Does not support pointer events. 3614 */ 3615 final class ImeInputStage extends AsyncInputStage 3616 implements InputMethodManager.FinishedInputEventCallback { 3617 public ImeInputStage(InputStage next, String traceCounter) { 3618 super(next, traceCounter); 3619 } 3620 3621 @Override 3622 protected int onProcess(QueuedInputEvent q) { 3623 if (mLastWasImTarget) { 3624 InputMethodManager imm = InputMethodManager.peekInstance(); 3625 if (imm != null) { 3626 final InputEvent event = q.mEvent; 3627 if (DEBUG_IMF) Log.v(TAG, "Sending input event to IME: " + event); 3628 int result = imm.dispatchInputEvent(event, q, this, mHandler); 3629 if (result == InputMethodManager.DISPATCH_HANDLED) { 3630 return FINISH_HANDLED; 3631 } else if (result == InputMethodManager.DISPATCH_NOT_HANDLED) { 3632 return FINISH_NOT_HANDLED; 3633 } else { 3634 return DEFER; // callback will be invoked later 3635 } 3636 } 3637 } 3638 return FORWARD; 3639 } 3640 3641 @Override 3642 public void onFinishedInputEvent(Object token, boolean handled) { 3643 QueuedInputEvent q = (QueuedInputEvent)token; 3644 if (handled) { 3645 finish(q, true); 3646 return; 3647 } 3648 forward(q); 3649 } 3650 } 3651 3652 /** 3653 * Performs early processing of post-ime input events. 3654 */ 3655 final class EarlyPostImeInputStage extends InputStage { 3656 public EarlyPostImeInputStage(InputStage next) { 3657 super(next); 3658 } 3659 3660 @Override 3661 protected int onProcess(QueuedInputEvent q) { 3662 if (q.mEvent instanceof KeyEvent) { 3663 return processKeyEvent(q); 3664 } else { 3665 final int source = q.mEvent.getSource(); 3666 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 3667 return processPointerEvent(q); 3668 } 3669 } 3670 return FORWARD; 3671 } 3672 3673 private int processKeyEvent(QueuedInputEvent q) { 3674 final KeyEvent event = (KeyEvent)q.mEvent; 3675 3676 // If the key's purpose is to exit touch mode then we consume it 3677 // and consider it handled. 3678 if (checkForLeavingTouchModeAndConsume(event)) { 3679 return FINISH_HANDLED; 3680 } 3681 3682 // Make sure the fallback event policy sees all keys that will be 3683 // delivered to the view hierarchy. 3684 mFallbackEventHandler.preDispatchKeyEvent(event); 3685 return FORWARD; 3686 } 3687 3688 private int processPointerEvent(QueuedInputEvent q) { 3689 final MotionEvent event = (MotionEvent)q.mEvent; 3690 3691 // Translate the pointer event for compatibility, if needed. 3692 if (mTranslator != null) { 3693 mTranslator.translateEventInScreenToAppWindow(event); 3694 } 3695 3696 // Enter touch mode on down or scroll. 3697 final int action = event.getAction(); 3698 if (action == MotionEvent.ACTION_DOWN || action == MotionEvent.ACTION_SCROLL) { 3699 ensureTouchMode(true); 3700 } 3701 3702 // Offset the scroll position. 3703 if (mCurScrollY != 0) { 3704 event.offsetLocation(0, mCurScrollY); 3705 } 3706 3707 // Remember the touch position for possible drag-initiation. 3708 if (event.isTouchEvent()) { 3709 mLastTouchPoint.x = event.getRawX(); 3710 mLastTouchPoint.y = event.getRawY(); 3711 } 3712 return FORWARD; 3713 } 3714 } 3715 3716 /** 3717 * Delivers post-ime input events to a native activity. 3718 */ 3719 final class NativePostImeInputStage extends AsyncInputStage 3720 implements InputQueue.FinishedInputEventCallback { 3721 public NativePostImeInputStage(InputStage next, String traceCounter) { 3722 super(next, traceCounter); 3723 } 3724 3725 @Override 3726 protected int onProcess(QueuedInputEvent q) { 3727 if (mInputQueue != null) { 3728 mInputQueue.sendInputEvent(q.mEvent, q, false, this); 3729 return DEFER; 3730 } 3731 return FORWARD; 3732 } 3733 3734 @Override 3735 public void onFinishedInputEvent(Object token, boolean handled) { 3736 QueuedInputEvent q = (QueuedInputEvent)token; 3737 if (handled) { 3738 finish(q, true); 3739 return; 3740 } 3741 forward(q); 3742 } 3743 } 3744 3745 /** 3746 * Delivers post-ime input events to the view hierarchy. 3747 */ 3748 final class ViewPostImeInputStage extends InputStage { 3749 public ViewPostImeInputStage(InputStage next) { 3750 super(next); 3751 } 3752 3753 @Override 3754 protected int onProcess(QueuedInputEvent q) { 3755 if (q.mEvent instanceof KeyEvent) { 3756 return processKeyEvent(q); 3757 } else { 3758 final int source = q.mEvent.getSource(); 3759 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 3760 return processPointerEvent(q); 3761 } else if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 3762 return processTrackballEvent(q); 3763 } else { 3764 return processGenericMotionEvent(q); 3765 } 3766 } 3767 } 3768 3769 private int processKeyEvent(QueuedInputEvent q) { 3770 final KeyEvent event = (KeyEvent)q.mEvent; 3771 3772 // Deliver the key to the view hierarchy. 3773 if (mView.dispatchKeyEvent(event)) { 3774 return FINISH_HANDLED; 3775 } 3776 3777 // If the Control modifier is held, try to interpret the key as a shortcut. 3778 if (event.getAction() == KeyEvent.ACTION_DOWN 3779 && event.isCtrlPressed() 3780 && event.getRepeatCount() == 0 3781 && !KeyEvent.isModifierKey(event.getKeyCode())) { 3782 if (mView.dispatchKeyShortcutEvent(event)) { 3783 return FINISH_HANDLED; 3784 } 3785 } 3786 3787 // Apply the fallback event policy. 3788 if (mFallbackEventHandler.dispatchKeyEvent(event)) { 3789 return FINISH_HANDLED; 3790 } 3791 3792 // Handle automatic focus changes. 3793 if (event.getAction() == KeyEvent.ACTION_DOWN) { 3794 int direction = 0; 3795 switch (event.getKeyCode()) { 3796 case KeyEvent.KEYCODE_DPAD_LEFT: 3797 if (event.hasNoModifiers()) { 3798 direction = View.FOCUS_LEFT; 3799 } 3800 break; 3801 case KeyEvent.KEYCODE_DPAD_RIGHT: 3802 if (event.hasNoModifiers()) { 3803 direction = View.FOCUS_RIGHT; 3804 } 3805 break; 3806 case KeyEvent.KEYCODE_DPAD_UP: 3807 if (event.hasNoModifiers()) { 3808 direction = View.FOCUS_UP; 3809 } 3810 break; 3811 case KeyEvent.KEYCODE_DPAD_DOWN: 3812 if (event.hasNoModifiers()) { 3813 direction = View.FOCUS_DOWN; 3814 } 3815 break; 3816 case KeyEvent.KEYCODE_TAB: 3817 if (event.hasNoModifiers()) { 3818 direction = View.FOCUS_FORWARD; 3819 } else if (event.hasModifiers(KeyEvent.META_SHIFT_ON)) { 3820 direction = View.FOCUS_BACKWARD; 3821 } 3822 break; 3823 } 3824 if (direction != 0) { 3825 View focused = mView.findFocus(); 3826 if (focused != null) { 3827 View v = focused.focusSearch(direction); 3828 if (v != null && v != focused) { 3829 // do the math the get the interesting rect 3830 // of previous focused into the coord system of 3831 // newly focused view 3832 focused.getFocusedRect(mTempRect); 3833 if (mView instanceof ViewGroup) { 3834 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 3835 focused, mTempRect); 3836 ((ViewGroup) mView).offsetRectIntoDescendantCoords( 3837 v, mTempRect); 3838 } 3839 if (v.requestFocus(direction, mTempRect)) { 3840 playSoundEffect(SoundEffectConstants 3841 .getContantForFocusDirection(direction)); 3842 return FINISH_HANDLED; 3843 } 3844 } 3845 3846 // Give the focused view a last chance to handle the dpad key. 3847 if (mView.dispatchUnhandledMove(focused, direction)) { 3848 return FINISH_HANDLED; 3849 } 3850 } else { 3851 // find the best view to give focus to in this non-touch-mode with no-focus 3852 View v = focusSearch(null, direction); 3853 if (v != null && v.requestFocus(direction)) { 3854 return FINISH_HANDLED; 3855 } 3856 } 3857 } 3858 } 3859 return FORWARD; 3860 } 3861 3862 private int processPointerEvent(QueuedInputEvent q) { 3863 final MotionEvent event = (MotionEvent)q.mEvent; 3864 3865 if (mView.dispatchPointerEvent(event)) { 3866 return FINISH_HANDLED; 3867 } 3868 return FORWARD; 3869 } 3870 3871 private int processTrackballEvent(QueuedInputEvent q) { 3872 final MotionEvent event = (MotionEvent)q.mEvent; 3873 3874 if (mView.dispatchTrackballEvent(event)) { 3875 return FINISH_HANDLED; 3876 } 3877 return FORWARD; 3878 } 3879 3880 private int processGenericMotionEvent(QueuedInputEvent q) { 3881 final MotionEvent event = (MotionEvent)q.mEvent; 3882 3883 // Deliver the event to the view. 3884 if (mView.dispatchGenericMotionEvent(event)) { 3885 return FINISH_HANDLED; 3886 } 3887 return FORWARD; 3888 } 3889 } 3890 3891 /** 3892 * Performs synthesis of new input events from unhandled input events. 3893 */ 3894 final class SyntheticInputStage extends InputStage { 3895 private final SyntheticTrackballHandler mTrackball = new SyntheticTrackballHandler(); 3896 private final SyntheticJoystickHandler mJoystick = new SyntheticJoystickHandler(); 3897 private final SyntheticTouchNavigationHandler mTouchNavigation = 3898 new SyntheticTouchNavigationHandler(); 3899 3900 public SyntheticInputStage() { 3901 super(null); 3902 } 3903 3904 @Override 3905 protected int onProcess(QueuedInputEvent q) { 3906 q.mFlags |= QueuedInputEvent.FLAG_RESYNTHESIZED; 3907 if (q.mEvent instanceof MotionEvent) { 3908 final MotionEvent event = (MotionEvent)q.mEvent; 3909 final int source = event.getSource(); 3910 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 3911 mTrackball.process(event); 3912 return FINISH_HANDLED; 3913 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 3914 mJoystick.process(event); 3915 return FINISH_HANDLED; 3916 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 3917 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 3918 mTouchNavigation.process(event); 3919 return FINISH_HANDLED; 3920 } 3921 } 3922 return FORWARD; 3923 } 3924 3925 @Override 3926 protected void onDeliverToNext(QueuedInputEvent q) { 3927 if ((q.mFlags & QueuedInputEvent.FLAG_RESYNTHESIZED) == 0) { 3928 // Cancel related synthetic events if any prior stage has handled the event. 3929 if (q.mEvent instanceof MotionEvent) { 3930 final MotionEvent event = (MotionEvent)q.mEvent; 3931 final int source = event.getSource(); 3932 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 3933 mTrackball.cancel(event); 3934 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 3935 mJoystick.cancel(event); 3936 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 3937 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 3938 mTouchNavigation.cancel(event); 3939 } 3940 } 3941 } 3942 super.onDeliverToNext(q); 3943 } 3944 } 3945 3946 /** 3947 * Creates dpad events from unhandled trackball movements. 3948 */ 3949 final class SyntheticTrackballHandler { 3950 private final TrackballAxis mX = new TrackballAxis(); 3951 private final TrackballAxis mY = new TrackballAxis(); 3952 private long mLastTime; 3953 3954 public void process(MotionEvent event) { 3955 // Translate the trackball event into DPAD keys and try to deliver those. 3956 long curTime = SystemClock.uptimeMillis(); 3957 if ((mLastTime + MAX_TRACKBALL_DELAY) < curTime) { 3958 // It has been too long since the last movement, 3959 // so restart at the beginning. 3960 mX.reset(0); 3961 mY.reset(0); 3962 mLastTime = curTime; 3963 } 3964 3965 final int action = event.getAction(); 3966 final int metaState = event.getMetaState(); 3967 switch (action) { 3968 case MotionEvent.ACTION_DOWN: 3969 mX.reset(2); 3970 mY.reset(2); 3971 enqueueInputEvent(new KeyEvent(curTime, curTime, 3972 KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 3973 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 3974 InputDevice.SOURCE_KEYBOARD)); 3975 break; 3976 case MotionEvent.ACTION_UP: 3977 mX.reset(2); 3978 mY.reset(2); 3979 enqueueInputEvent(new KeyEvent(curTime, curTime, 3980 KeyEvent.ACTION_UP, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 3981 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 3982 InputDevice.SOURCE_KEYBOARD)); 3983 break; 3984 } 3985 3986 if (DEBUG_TRACKBALL) Log.v(TAG, "TB X=" + mX.position + " step=" 3987 + mX.step + " dir=" + mX.dir + " acc=" + mX.acceleration 3988 + " move=" + event.getX() 3989 + " / Y=" + mY.position + " step=" 3990 + mY.step + " dir=" + mY.dir + " acc=" + mY.acceleration 3991 + " move=" + event.getY()); 3992 final float xOff = mX.collect(event.getX(), event.getEventTime(), "X"); 3993 final float yOff = mY.collect(event.getY(), event.getEventTime(), "Y"); 3994 3995 // Generate DPAD events based on the trackball movement. 3996 // We pick the axis that has moved the most as the direction of 3997 // the DPAD. When we generate DPAD events for one axis, then the 3998 // other axis is reset -- we don't want to perform DPAD jumps due 3999 // to slight movements in the trackball when making major movements 4000 // along the other axis. 4001 int keycode = 0; 4002 int movement = 0; 4003 float accel = 1; 4004 if (xOff > yOff) { 4005 movement = mX.generate(); 4006 if (movement != 0) { 4007 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_RIGHT 4008 : KeyEvent.KEYCODE_DPAD_LEFT; 4009 accel = mX.acceleration; 4010 mY.reset(2); 4011 } 4012 } else if (yOff > 0) { 4013 movement = mY.generate(); 4014 if (movement != 0) { 4015 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_DOWN 4016 : KeyEvent.KEYCODE_DPAD_UP; 4017 accel = mY.acceleration; 4018 mX.reset(2); 4019 } 4020 } 4021 4022 if (keycode != 0) { 4023 if (movement < 0) movement = -movement; 4024 int accelMovement = (int)(movement * accel); 4025 if (DEBUG_TRACKBALL) Log.v(TAG, "Move: movement=" + movement 4026 + " accelMovement=" + accelMovement 4027 + " accel=" + accel); 4028 if (accelMovement > movement) { 4029 if (DEBUG_TRACKBALL) Log.v(TAG, "Delivering fake DPAD: " 4030 + keycode); 4031 movement--; 4032 int repeatCount = accelMovement - movement; 4033 enqueueInputEvent(new KeyEvent(curTime, curTime, 4034 KeyEvent.ACTION_MULTIPLE, keycode, repeatCount, metaState, 4035 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4036 InputDevice.SOURCE_KEYBOARD)); 4037 } 4038 while (movement > 0) { 4039 if (DEBUG_TRACKBALL) Log.v(TAG, "Delivering fake DPAD: " 4040 + keycode); 4041 movement--; 4042 curTime = SystemClock.uptimeMillis(); 4043 enqueueInputEvent(new KeyEvent(curTime, curTime, 4044 KeyEvent.ACTION_DOWN, keycode, 0, metaState, 4045 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4046 InputDevice.SOURCE_KEYBOARD)); 4047 enqueueInputEvent(new KeyEvent(curTime, curTime, 4048 KeyEvent.ACTION_UP, keycode, 0, metaState, 4049 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4050 InputDevice.SOURCE_KEYBOARD)); 4051 } 4052 mLastTime = curTime; 4053 } 4054 } 4055 4056 public void cancel(MotionEvent event) { 4057 mLastTime = Integer.MIN_VALUE; 4058 4059 // If we reach this, we consumed a trackball event. 4060 // Because we will not translate the trackball event into a key event, 4061 // touch mode will not exit, so we exit touch mode here. 4062 if (mView != null && mAdded) { 4063 ensureTouchMode(false); 4064 } 4065 } 4066 } 4067 4068 /** 4069 * Maintains state information for a single trackball axis, generating 4070 * discrete (DPAD) movements based on raw trackball motion. 4071 */ 4072 static final class TrackballAxis { 4073 /** 4074 * The maximum amount of acceleration we will apply. 4075 */ 4076 static final float MAX_ACCELERATION = 20; 4077 4078 /** 4079 * The maximum amount of time (in milliseconds) between events in order 4080 * for us to consider the user to be doing fast trackball movements, 4081 * and thus apply an acceleration. 4082 */ 4083 static final long FAST_MOVE_TIME = 150; 4084 4085 /** 4086 * Scaling factor to the time (in milliseconds) between events to how 4087 * much to multiple/divide the current acceleration. When movement 4088 * is < FAST_MOVE_TIME this multiplies the acceleration; when > 4089 * FAST_MOVE_TIME it divides it. 4090 */ 4091 static final float ACCEL_MOVE_SCALING_FACTOR = (1.0f/40); 4092 4093 static final float FIRST_MOVEMENT_THRESHOLD = 0.5f; 4094 static final float SECOND_CUMULATIVE_MOVEMENT_THRESHOLD = 2.0f; 4095 static final float SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD = 1.0f; 4096 4097 float position; 4098 float acceleration = 1; 4099 long lastMoveTime = 0; 4100 int step; 4101 int dir; 4102 int nonAccelMovement; 4103 4104 void reset(int _step) { 4105 position = 0; 4106 acceleration = 1; 4107 lastMoveTime = 0; 4108 step = _step; 4109 dir = 0; 4110 } 4111 4112 /** 4113 * Add trackball movement into the state. If the direction of movement 4114 * has been reversed, the state is reset before adding the 4115 * movement (so that you don't have to compensate for any previously 4116 * collected movement before see the result of the movement in the 4117 * new direction). 4118 * 4119 * @return Returns the absolute value of the amount of movement 4120 * collected so far. 4121 */ 4122 float collect(float off, long time, String axis) { 4123 long normTime; 4124 if (off > 0) { 4125 normTime = (long)(off * FAST_MOVE_TIME); 4126 if (dir < 0) { 4127 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to positive!"); 4128 position = 0; 4129 step = 0; 4130 acceleration = 1; 4131 lastMoveTime = 0; 4132 } 4133 dir = 1; 4134 } else if (off < 0) { 4135 normTime = (long)((-off) * FAST_MOVE_TIME); 4136 if (dir > 0) { 4137 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to negative!"); 4138 position = 0; 4139 step = 0; 4140 acceleration = 1; 4141 lastMoveTime = 0; 4142 } 4143 dir = -1; 4144 } else { 4145 normTime = 0; 4146 } 4147 4148 // The number of milliseconds between each movement that is 4149 // considered "normal" and will not result in any acceleration 4150 // or deceleration, scaled by the offset we have here. 4151 if (normTime > 0) { 4152 long delta = time - lastMoveTime; 4153 lastMoveTime = time; 4154 float acc = acceleration; 4155 if (delta < normTime) { 4156 // The user is scrolling rapidly, so increase acceleration. 4157 float scale = (normTime-delta) * ACCEL_MOVE_SCALING_FACTOR; 4158 if (scale > 1) acc *= scale; 4159 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " accelerate: off=" 4160 + off + " normTime=" + normTime + " delta=" + delta 4161 + " scale=" + scale + " acc=" + acc); 4162 acceleration = acc < MAX_ACCELERATION ? acc : MAX_ACCELERATION; 4163 } else { 4164 // The user is scrolling slowly, so decrease acceleration. 4165 float scale = (delta-normTime) * ACCEL_MOVE_SCALING_FACTOR; 4166 if (scale > 1) acc /= scale; 4167 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " deccelerate: off=" 4168 + off + " normTime=" + normTime + " delta=" + delta 4169 + " scale=" + scale + " acc=" + acc); 4170 acceleration = acc > 1 ? acc : 1; 4171 } 4172 } 4173 position += off; 4174 return Math.abs(position); 4175 } 4176 4177 /** 4178 * Generate the number of discrete movement events appropriate for 4179 * the currently collected trackball movement. 4180 * 4181 * @return Returns the number of discrete movements, either positive 4182 * or negative, or 0 if there is not enough trackball movement yet 4183 * for a discrete movement. 4184 */ 4185 int generate() { 4186 int movement = 0; 4187 nonAccelMovement = 0; 4188 do { 4189 final int dir = position >= 0 ? 1 : -1; 4190 switch (step) { 4191 // If we are going to execute the first step, then we want 4192 // to do this as soon as possible instead of waiting for 4193 // a full movement, in order to make things look responsive. 4194 case 0: 4195 if (Math.abs(position) < FIRST_MOVEMENT_THRESHOLD) { 4196 return movement; 4197 } 4198 movement += dir; 4199 nonAccelMovement += dir; 4200 step = 1; 4201 break; 4202 // If we have generated the first movement, then we need 4203 // to wait for the second complete trackball motion before 4204 // generating the second discrete movement. 4205 case 1: 4206 if (Math.abs(position) < SECOND_CUMULATIVE_MOVEMENT_THRESHOLD) { 4207 return movement; 4208 } 4209 movement += dir; 4210 nonAccelMovement += dir; 4211 position -= SECOND_CUMULATIVE_MOVEMENT_THRESHOLD * dir; 4212 step = 2; 4213 break; 4214 // After the first two, we generate discrete movements 4215 // consistently with the trackball, applying an acceleration 4216 // if the trackball is moving quickly. This is a simple 4217 // acceleration on top of what we already compute based 4218 // on how quickly the wheel is being turned, to apply 4219 // a longer increasing acceleration to continuous movement 4220 // in one direction. 4221 default: 4222 if (Math.abs(position) < SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD) { 4223 return movement; 4224 } 4225 movement += dir; 4226 position -= dir * SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD; 4227 float acc = acceleration; 4228 acc *= 1.1f; 4229 acceleration = acc < MAX_ACCELERATION ? acc : acceleration; 4230 break; 4231 } 4232 } while (true); 4233 } 4234 } 4235 4236 /** 4237 * Creates dpad events from unhandled joystick movements. 4238 */ 4239 final class SyntheticJoystickHandler extends Handler { 4240 private final static int MSG_ENQUEUE_X_AXIS_KEY_REPEAT = 1; 4241 private final static int MSG_ENQUEUE_Y_AXIS_KEY_REPEAT = 2; 4242 4243 private int mLastXDirection; 4244 private int mLastYDirection; 4245 private int mLastXKeyCode; 4246 private int mLastYKeyCode; 4247 4248 public SyntheticJoystickHandler() { 4249 super(true); 4250 } 4251 4252 @Override 4253 public void handleMessage(Message msg) { 4254 switch (msg.what) { 4255 case MSG_ENQUEUE_X_AXIS_KEY_REPEAT: 4256 case MSG_ENQUEUE_Y_AXIS_KEY_REPEAT: { 4257 KeyEvent oldEvent = (KeyEvent)msg.obj; 4258 KeyEvent e = KeyEvent.changeTimeRepeat(oldEvent, 4259 SystemClock.uptimeMillis(), 4260 oldEvent.getRepeatCount() + 1); 4261 if (mAttachInfo.mHasWindowFocus) { 4262 enqueueInputEvent(e); 4263 Message m = obtainMessage(msg.what, e); 4264 m.setAsynchronous(true); 4265 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatDelay()); 4266 } 4267 } break; 4268 } 4269 } 4270 4271 public void process(MotionEvent event) { 4272 update(event, true); 4273 } 4274 4275 public void cancel(MotionEvent event) { 4276 update(event, false); 4277 } 4278 4279 private void update(MotionEvent event, boolean synthesizeNewKeys) { 4280 final long time = event.getEventTime(); 4281 final int metaState = event.getMetaState(); 4282 final int deviceId = event.getDeviceId(); 4283 final int source = event.getSource(); 4284 4285 int xDirection = joystickAxisValueToDirection( 4286 event.getAxisValue(MotionEvent.AXIS_HAT_X)); 4287 if (xDirection == 0) { 4288 xDirection = joystickAxisValueToDirection(event.getX()); 4289 } 4290 4291 int yDirection = joystickAxisValueToDirection( 4292 event.getAxisValue(MotionEvent.AXIS_HAT_Y)); 4293 if (yDirection == 0) { 4294 yDirection = joystickAxisValueToDirection(event.getY()); 4295 } 4296 4297 if (xDirection != mLastXDirection) { 4298 if (mLastXKeyCode != 0) { 4299 removeMessages(MSG_ENQUEUE_X_AXIS_KEY_REPEAT); 4300 enqueueInputEvent(new KeyEvent(time, time, 4301 KeyEvent.ACTION_UP, mLastXKeyCode, 0, metaState, 4302 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4303 mLastXKeyCode = 0; 4304 } 4305 4306 mLastXDirection = xDirection; 4307 4308 if (xDirection != 0 && synthesizeNewKeys) { 4309 mLastXKeyCode = xDirection > 0 4310 ? KeyEvent.KEYCODE_DPAD_RIGHT : KeyEvent.KEYCODE_DPAD_LEFT; 4311 final KeyEvent e = new KeyEvent(time, time, 4312 KeyEvent.ACTION_DOWN, mLastXKeyCode, 0, metaState, 4313 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4314 enqueueInputEvent(e); 4315 Message m = obtainMessage(MSG_ENQUEUE_X_AXIS_KEY_REPEAT, e); 4316 m.setAsynchronous(true); 4317 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4318 } 4319 } 4320 4321 if (yDirection != mLastYDirection) { 4322 if (mLastYKeyCode != 0) { 4323 removeMessages(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT); 4324 enqueueInputEvent(new KeyEvent(time, time, 4325 KeyEvent.ACTION_UP, mLastYKeyCode, 0, metaState, 4326 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4327 mLastYKeyCode = 0; 4328 } 4329 4330 mLastYDirection = yDirection; 4331 4332 if (yDirection != 0 && synthesizeNewKeys) { 4333 mLastYKeyCode = yDirection > 0 4334 ? KeyEvent.KEYCODE_DPAD_DOWN : KeyEvent.KEYCODE_DPAD_UP; 4335 final KeyEvent e = new KeyEvent(time, time, 4336 KeyEvent.ACTION_DOWN, mLastYKeyCode, 0, metaState, 4337 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4338 enqueueInputEvent(e); 4339 Message m = obtainMessage(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT, e); 4340 m.setAsynchronous(true); 4341 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4342 } 4343 } 4344 } 4345 4346 private int joystickAxisValueToDirection(float value) { 4347 if (value >= 0.5f) { 4348 return 1; 4349 } else if (value <= -0.5f) { 4350 return -1; 4351 } else { 4352 return 0; 4353 } 4354 } 4355 } 4356 4357 /** 4358 * Creates dpad events from unhandled touch navigation movements. 4359 */ 4360 final class SyntheticTouchNavigationHandler extends Handler { 4361 private static final String LOCAL_TAG = "SyntheticTouchNavigationHandler"; 4362 private static final boolean LOCAL_DEBUG = false; 4363 4364 // Assumed nominal width and height in millimeters of a touch navigation pad, 4365 // if no resolution information is available from the input system. 4366 private static final float DEFAULT_WIDTH_MILLIMETERS = 48; 4367 private static final float DEFAULT_HEIGHT_MILLIMETERS = 48; 4368 4369 /* TODO: These constants should eventually be moved to ViewConfiguration. */ 4370 4371 // Tap timeout in milliseconds. 4372 private static final int TAP_TIMEOUT = 250; 4373 4374 // The maximum distance traveled for a gesture to be considered a tap in millimeters. 4375 private static final int TAP_SLOP_MILLIMETERS = 5; 4376 4377 // The nominal distance traveled to move by one unit. 4378 private static final int TICK_DISTANCE_MILLIMETERS = 12; 4379 4380 // Minimum and maximum fling velocity in ticks per second. 4381 // The minimum velocity should be set such that we perform enough ticks per 4382 // second that the fling appears to be fluid. For example, if we set the minimum 4383 // to 2 ticks per second, then there may be up to half a second delay between the next 4384 // to last and last ticks which is noticeably discrete and jerky. This value should 4385 // probably not be set to anything less than about 4. 4386 // If fling accuracy is a problem then consider tuning the tick distance instead. 4387 private static final float MIN_FLING_VELOCITY_TICKS_PER_SECOND = 6f; 4388 private static final float MAX_FLING_VELOCITY_TICKS_PER_SECOND = 20f; 4389 4390 // Fling velocity decay factor applied after each new key is emitted. 4391 // This parameter controls the deceleration and overall duration of the fling. 4392 // The fling stops automatically when its velocity drops below the minimum 4393 // fling velocity defined above. 4394 private static final float FLING_TICK_DECAY = 0.8f; 4395 4396 /* The input device that we are tracking. */ 4397 4398 private int mCurrentDeviceId = -1; 4399 private int mCurrentSource; 4400 private boolean mCurrentDeviceSupported; 4401 4402 /* Configuration for the current input device. */ 4403 4404 // The tap timeout and scaled slop. 4405 private int mConfigTapTimeout; 4406 private float mConfigTapSlop; 4407 4408 // The scaled tick distance. A movement of this amount should generally translate 4409 // into a single dpad event in a given direction. 4410 private float mConfigTickDistance; 4411 4412 // The minimum and maximum scaled fling velocity. 4413 private float mConfigMinFlingVelocity; 4414 private float mConfigMaxFlingVelocity; 4415 4416 /* Tracking state. */ 4417 4418 // The velocity tracker for detecting flings. 4419 private VelocityTracker mVelocityTracker; 4420 4421 // The active pointer id, or -1 if none. 4422 private int mActivePointerId = -1; 4423 4424 // Time and location where tracking started. 4425 private long mStartTime; 4426 private float mStartX; 4427 private float mStartY; 4428 4429 // Most recently observed position. 4430 private float mLastX; 4431 private float mLastY; 4432 4433 // Accumulated movement delta since the last direction key was sent. 4434 private float mAccumulatedX; 4435 private float mAccumulatedY; 4436 4437 // Set to true if any movement was delivered to the app. 4438 // Implies that tap slop was exceeded. 4439 private boolean mConsumedMovement; 4440 4441 // The most recently sent key down event. 4442 // The keycode remains set until the direction changes or a fling ends 4443 // so that repeated key events may be generated as required. 4444 private long mPendingKeyDownTime; 4445 private int mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 4446 private int mPendingKeyRepeatCount; 4447 private int mPendingKeyMetaState; 4448 4449 // The current fling velocity while a fling is in progress. 4450 private boolean mFlinging; 4451 private float mFlingVelocity; 4452 4453 public SyntheticTouchNavigationHandler() { 4454 super(true); 4455 } 4456 4457 public void process(MotionEvent event) { 4458 // Update the current device information. 4459 final long time = event.getEventTime(); 4460 final int deviceId = event.getDeviceId(); 4461 final int source = event.getSource(); 4462 if (mCurrentDeviceId != deviceId || mCurrentSource != source) { 4463 finishKeys(time); 4464 finishTracking(time); 4465 mCurrentDeviceId = deviceId; 4466 mCurrentSource = source; 4467 mCurrentDeviceSupported = false; 4468 InputDevice device = event.getDevice(); 4469 if (device != null) { 4470 // In order to support an input device, we must know certain 4471 // characteristics about it, such as its size and resolution. 4472 InputDevice.MotionRange xRange = device.getMotionRange(MotionEvent.AXIS_X); 4473 InputDevice.MotionRange yRange = device.getMotionRange(MotionEvent.AXIS_Y); 4474 if (xRange != null && yRange != null) { 4475 mCurrentDeviceSupported = true; 4476 4477 // Infer the resolution if it not actually known. 4478 float xRes = xRange.getResolution(); 4479 if (xRes <= 0) { 4480 xRes = xRange.getRange() / DEFAULT_WIDTH_MILLIMETERS; 4481 } 4482 float yRes = yRange.getResolution(); 4483 if (yRes <= 0) { 4484 yRes = yRange.getRange() / DEFAULT_HEIGHT_MILLIMETERS; 4485 } 4486 float nominalRes = (xRes + yRes) * 0.5f; 4487 4488 // Precompute all of the configuration thresholds we will need. 4489 mConfigTapTimeout = TAP_TIMEOUT; 4490 mConfigTapSlop = TAP_SLOP_MILLIMETERS * nominalRes; 4491 mConfigTickDistance = TICK_DISTANCE_MILLIMETERS * nominalRes; 4492 mConfigMinFlingVelocity = 4493 MIN_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 4494 mConfigMaxFlingVelocity = 4495 MAX_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 4496 4497 if (LOCAL_DEBUG) { 4498 Log.d(LOCAL_TAG, "Configured device " + mCurrentDeviceId 4499 + " (" + Integer.toHexString(mCurrentSource) + "): " 4500 + "mConfigTapTimeout=" + mConfigTapTimeout 4501 + ", mConfigTapSlop=" + mConfigTapSlop 4502 + ", mConfigTickDistance=" + mConfigTickDistance 4503 + ", mConfigMinFlingVelocity=" + mConfigMinFlingVelocity 4504 + ", mConfigMaxFlingVelocity=" + mConfigMaxFlingVelocity); 4505 } 4506 } 4507 } 4508 } 4509 if (!mCurrentDeviceSupported) { 4510 return; 4511 } 4512 4513 // Handle the event. 4514 final int action = event.getActionMasked(); 4515 switch (action) { 4516 case MotionEvent.ACTION_DOWN: { 4517 boolean caughtFling = mFlinging; 4518 finishKeys(time); 4519 finishTracking(time); 4520 mActivePointerId = event.getPointerId(0); 4521 mVelocityTracker = VelocityTracker.obtain(); 4522 mVelocityTracker.addMovement(event); 4523 mStartTime = time; 4524 mStartX = event.getX(); 4525 mStartY = event.getY(); 4526 mLastX = mStartX; 4527 mLastY = mStartY; 4528 mAccumulatedX = 0; 4529 mAccumulatedY = 0; 4530 4531 // If we caught a fling, then pretend that the tap slop has already 4532 // been exceeded to suppress taps whose only purpose is to stop the fling. 4533 mConsumedMovement = caughtFling; 4534 break; 4535 } 4536 4537 case MotionEvent.ACTION_MOVE: 4538 case MotionEvent.ACTION_UP: { 4539 if (mActivePointerId < 0) { 4540 break; 4541 } 4542 final int index = event.findPointerIndex(mActivePointerId); 4543 if (index < 0) { 4544 finishKeys(time); 4545 finishTracking(time); 4546 break; 4547 } 4548 4549 mVelocityTracker.addMovement(event); 4550 final float x = event.getX(index); 4551 final float y = event.getY(index); 4552 mAccumulatedX += x - mLastX; 4553 mAccumulatedY += y - mLastY; 4554 mLastX = x; 4555 mLastY = y; 4556 4557 // Consume any accumulated movement so far. 4558 final int metaState = event.getMetaState(); 4559 consumeAccumulatedMovement(time, metaState); 4560 4561 // Detect taps and flings. 4562 if (action == MotionEvent.ACTION_UP) { 4563 if (!mConsumedMovement 4564 && Math.hypot(mLastX - mStartX, mLastY - mStartY) < mConfigTapSlop 4565 && time <= mStartTime + mConfigTapTimeout) { 4566 // It's a tap! 4567 finishKeys(time); 4568 sendKeyDownOrRepeat(time, KeyEvent.KEYCODE_DPAD_CENTER, metaState); 4569 sendKeyUp(time); 4570 } else if (mConsumedMovement 4571 && mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 4572 // It might be a fling. 4573 mVelocityTracker.computeCurrentVelocity(1000, mConfigMaxFlingVelocity); 4574 final float vx = mVelocityTracker.getXVelocity(mActivePointerId); 4575 final float vy = mVelocityTracker.getYVelocity(mActivePointerId); 4576 if (!startFling(time, vx, vy)) { 4577 finishKeys(time); 4578 } 4579 } 4580 finishTracking(time); 4581 } 4582 break; 4583 } 4584 4585 case MotionEvent.ACTION_CANCEL: { 4586 finishKeys(time); 4587 finishTracking(time); 4588 break; 4589 } 4590 } 4591 } 4592 4593 public void cancel(MotionEvent event) { 4594 if (mCurrentDeviceId == event.getDeviceId() 4595 && mCurrentSource == event.getSource()) { 4596 final long time = event.getEventTime(); 4597 finishKeys(time); 4598 finishTracking(time); 4599 } 4600 } 4601 4602 private void finishKeys(long time) { 4603 cancelFling(); 4604 sendKeyUp(time); 4605 } 4606 4607 private void finishTracking(long time) { 4608 if (mActivePointerId >= 0) { 4609 mActivePointerId = -1; 4610 mVelocityTracker.recycle(); 4611 mVelocityTracker = null; 4612 } 4613 } 4614 4615 private void consumeAccumulatedMovement(long time, int metaState) { 4616 final float absX = Math.abs(mAccumulatedX); 4617 final float absY = Math.abs(mAccumulatedY); 4618 if (absX >= absY) { 4619 if (absX >= mConfigTickDistance) { 4620 mAccumulatedX = consumeAccumulatedMovement(time, metaState, mAccumulatedX, 4621 KeyEvent.KEYCODE_DPAD_LEFT, KeyEvent.KEYCODE_DPAD_RIGHT); 4622 mAccumulatedY = 0; 4623 mConsumedMovement = true; 4624 } 4625 } else { 4626 if (absY >= mConfigTickDistance) { 4627 mAccumulatedY = consumeAccumulatedMovement(time, metaState, mAccumulatedY, 4628 KeyEvent.KEYCODE_DPAD_UP, KeyEvent.KEYCODE_DPAD_DOWN); 4629 mAccumulatedX = 0; 4630 mConsumedMovement = true; 4631 } 4632 } 4633 } 4634 4635 private float consumeAccumulatedMovement(long time, int metaState, 4636 float accumulator, int negativeKeyCode, int positiveKeyCode) { 4637 while (accumulator <= -mConfigTickDistance) { 4638 sendKeyDownOrRepeat(time, negativeKeyCode, metaState); 4639 accumulator += mConfigTickDistance; 4640 } 4641 while (accumulator >= mConfigTickDistance) { 4642 sendKeyDownOrRepeat(time, positiveKeyCode, metaState); 4643 accumulator -= mConfigTickDistance; 4644 } 4645 return accumulator; 4646 } 4647 4648 private void sendKeyDownOrRepeat(long time, int keyCode, int metaState) { 4649 if (mPendingKeyCode != keyCode) { 4650 sendKeyUp(time); 4651 mPendingKeyDownTime = time; 4652 mPendingKeyCode = keyCode; 4653 mPendingKeyRepeatCount = 0; 4654 } else { 4655 mPendingKeyRepeatCount += 1; 4656 } 4657 mPendingKeyMetaState = metaState; 4658 4659 // Note: Normally we would pass FLAG_LONG_PRESS when the repeat count is 1 4660 // but it doesn't quite make sense when simulating the events in this way. 4661 if (LOCAL_DEBUG) { 4662 Log.d(LOCAL_TAG, "Sending key down: keyCode=" + mPendingKeyCode 4663 + ", repeatCount=" + mPendingKeyRepeatCount 4664 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 4665 } 4666 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 4667 KeyEvent.ACTION_DOWN, mPendingKeyCode, mPendingKeyRepeatCount, 4668 mPendingKeyMetaState, mCurrentDeviceId, 4669 KeyEvent.FLAG_FALLBACK, mCurrentSource)); 4670 } 4671 4672 private void sendKeyUp(long time) { 4673 if (mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 4674 if (LOCAL_DEBUG) { 4675 Log.d(LOCAL_TAG, "Sending key up: keyCode=" + mPendingKeyCode 4676 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 4677 } 4678 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 4679 KeyEvent.ACTION_UP, mPendingKeyCode, 0, mPendingKeyMetaState, 4680 mCurrentDeviceId, 0, KeyEvent.FLAG_FALLBACK, 4681 mCurrentSource)); 4682 mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 4683 } 4684 } 4685 4686 private boolean startFling(long time, float vx, float vy) { 4687 if (LOCAL_DEBUG) { 4688 Log.d(LOCAL_TAG, "Considering fling: vx=" + vx + ", vy=" + vy 4689 + ", min=" + mConfigMinFlingVelocity); 4690 } 4691 4692 // Flings must be oriented in the same direction as the preceding movements. 4693 switch (mPendingKeyCode) { 4694 case KeyEvent.KEYCODE_DPAD_LEFT: 4695 if (-vx >= mConfigMinFlingVelocity 4696 && Math.abs(vy) < mConfigMinFlingVelocity) { 4697 mFlingVelocity = -vx; 4698 break; 4699 } 4700 return false; 4701 4702 case KeyEvent.KEYCODE_DPAD_RIGHT: 4703 if (vx >= mConfigMinFlingVelocity 4704 && Math.abs(vy) < mConfigMinFlingVelocity) { 4705 mFlingVelocity = vx; 4706 break; 4707 } 4708 return false; 4709 4710 case KeyEvent.KEYCODE_DPAD_UP: 4711 if (-vy >= mConfigMinFlingVelocity 4712 && Math.abs(vx) < mConfigMinFlingVelocity) { 4713 mFlingVelocity = -vy; 4714 break; 4715 } 4716 return false; 4717 4718 case KeyEvent.KEYCODE_DPAD_DOWN: 4719 if (vy >= mConfigMinFlingVelocity 4720 && Math.abs(vx) < mConfigMinFlingVelocity) { 4721 mFlingVelocity = vy; 4722 break; 4723 } 4724 return false; 4725 } 4726 4727 // Post the first fling event. 4728 mFlinging = postFling(time); 4729 return mFlinging; 4730 } 4731 4732 private boolean postFling(long time) { 4733 // The idea here is to estimate the time when the pointer would have 4734 // traveled one tick distance unit given the current fling velocity. 4735 // This effect creates continuity of motion. 4736 if (mFlingVelocity >= mConfigMinFlingVelocity) { 4737 long delay = (long)(mConfigTickDistance / mFlingVelocity * 1000); 4738 postAtTime(mFlingRunnable, time + delay); 4739 if (LOCAL_DEBUG) { 4740 Log.d(LOCAL_TAG, "Posted fling: velocity=" 4741 + mFlingVelocity + ", delay=" + delay 4742 + ", keyCode=" + mPendingKeyCode); 4743 } 4744 return true; 4745 } 4746 return false; 4747 } 4748 4749 private void cancelFling() { 4750 if (mFlinging) { 4751 removeCallbacks(mFlingRunnable); 4752 mFlinging = false; 4753 } 4754 } 4755 4756 private final Runnable mFlingRunnable = new Runnable() { 4757 @Override 4758 public void run() { 4759 final long time = SystemClock.uptimeMillis(); 4760 sendKeyDownOrRepeat(time, mPendingKeyCode, mPendingKeyMetaState); 4761 mFlingVelocity *= FLING_TICK_DECAY; 4762 if (!postFling(time)) { 4763 mFlinging = false; 4764 finishKeys(time); 4765 } 4766 } 4767 }; 4768 } 4769 4770 /** 4771 * Returns true if the key is used for keyboard navigation. 4772 * @param keyEvent The key event. 4773 * @return True if the key is used for keyboard navigation. 4774 */ 4775 private static boolean isNavigationKey(KeyEvent keyEvent) { 4776 switch (keyEvent.getKeyCode()) { 4777 case KeyEvent.KEYCODE_DPAD_LEFT: 4778 case KeyEvent.KEYCODE_DPAD_RIGHT: 4779 case KeyEvent.KEYCODE_DPAD_UP: 4780 case KeyEvent.KEYCODE_DPAD_DOWN: 4781 case KeyEvent.KEYCODE_DPAD_CENTER: 4782 case KeyEvent.KEYCODE_PAGE_UP: 4783 case KeyEvent.KEYCODE_PAGE_DOWN: 4784 case KeyEvent.KEYCODE_MOVE_HOME: 4785 case KeyEvent.KEYCODE_MOVE_END: 4786 case KeyEvent.KEYCODE_TAB: 4787 case KeyEvent.KEYCODE_SPACE: 4788 case KeyEvent.KEYCODE_ENTER: 4789 return true; 4790 } 4791 return false; 4792 } 4793 4794 /** 4795 * Returns true if the key is used for typing. 4796 * @param keyEvent The key event. 4797 * @return True if the key is used for typing. 4798 */ 4799 private static boolean isTypingKey(KeyEvent keyEvent) { 4800 return keyEvent.getUnicodeChar() > 0; 4801 } 4802 4803 /** 4804 * See if the key event means we should leave touch mode (and leave touch mode if so). 4805 * @param event The key event. 4806 * @return Whether this key event should be consumed (meaning the act of 4807 * leaving touch mode alone is considered the event). 4808 */ 4809 private boolean checkForLeavingTouchModeAndConsume(KeyEvent event) { 4810 // Only relevant in touch mode. 4811 if (!mAttachInfo.mInTouchMode) { 4812 return false; 4813 } 4814 4815 // Only consider leaving touch mode on DOWN or MULTIPLE actions, never on UP. 4816 final int action = event.getAction(); 4817 if (action != KeyEvent.ACTION_DOWN && action != KeyEvent.ACTION_MULTIPLE) { 4818 return false; 4819 } 4820 4821 // Don't leave touch mode if the IME told us not to. 4822 if ((event.getFlags() & KeyEvent.FLAG_KEEP_TOUCH_MODE) != 0) { 4823 return false; 4824 } 4825 4826 // If the key can be used for keyboard navigation then leave touch mode 4827 // and select a focused view if needed (in ensureTouchMode). 4828 // When a new focused view is selected, we consume the navigation key because 4829 // navigation doesn't make much sense unless a view already has focus so 4830 // the key's purpose is to set focus. 4831 if (isNavigationKey(event)) { 4832 return ensureTouchMode(false); 4833 } 4834 4835 // If the key can be used for typing then leave touch mode 4836 // and select a focused view if needed (in ensureTouchMode). 4837 // Always allow the view to process the typing key. 4838 if (isTypingKey(event)) { 4839 ensureTouchMode(false); 4840 return false; 4841 } 4842 4843 return false; 4844 } 4845 4846 /* drag/drop */ 4847 void setLocalDragState(Object obj) { 4848 mLocalDragState = obj; 4849 } 4850 4851 private void handleDragEvent(DragEvent event) { 4852 // From the root, only drag start/end/location are dispatched. entered/exited 4853 // are determined and dispatched by the viewgroup hierarchy, who then report 4854 // that back here for ultimate reporting back to the framework. 4855 if (mView != null && mAdded) { 4856 final int what = event.mAction; 4857 4858 if (what == DragEvent.ACTION_DRAG_EXITED) { 4859 // A direct EXITED event means that the window manager knows we've just crossed 4860 // a window boundary, so the current drag target within this one must have 4861 // just been exited. Send it the usual notifications and then we're done 4862 // for now. 4863 mView.dispatchDragEvent(event); 4864 } else { 4865 // Cache the drag description when the operation starts, then fill it in 4866 // on subsequent calls as a convenience 4867 if (what == DragEvent.ACTION_DRAG_STARTED) { 4868 mCurrentDragView = null; // Start the current-recipient tracking 4869 mDragDescription = event.mClipDescription; 4870 } else { 4871 event.mClipDescription = mDragDescription; 4872 } 4873 4874 // For events with a [screen] location, translate into window coordinates 4875 if ((what == DragEvent.ACTION_DRAG_LOCATION) || (what == DragEvent.ACTION_DROP)) { 4876 mDragPoint.set(event.mX, event.mY); 4877 if (mTranslator != null) { 4878 mTranslator.translatePointInScreenToAppWindow(mDragPoint); 4879 } 4880 4881 if (mCurScrollY != 0) { 4882 mDragPoint.offset(0, mCurScrollY); 4883 } 4884 4885 event.mX = mDragPoint.x; 4886 event.mY = mDragPoint.y; 4887 } 4888 4889 // Remember who the current drag target is pre-dispatch 4890 final View prevDragView = mCurrentDragView; 4891 4892 // Now dispatch the drag/drop event 4893 boolean result = mView.dispatchDragEvent(event); 4894 4895 // If we changed apparent drag target, tell the OS about it 4896 if (prevDragView != mCurrentDragView) { 4897 try { 4898 if (prevDragView != null) { 4899 mWindowSession.dragRecipientExited(mWindow); 4900 } 4901 if (mCurrentDragView != null) { 4902 mWindowSession.dragRecipientEntered(mWindow); 4903 } 4904 } catch (RemoteException e) { 4905 Slog.e(TAG, "Unable to note drag target change"); 4906 } 4907 } 4908 4909 // Report the drop result when we're done 4910 if (what == DragEvent.ACTION_DROP) { 4911 mDragDescription = null; 4912 try { 4913 Log.i(TAG, "Reporting drop result: " + result); 4914 mWindowSession.reportDropResult(mWindow, result); 4915 } catch (RemoteException e) { 4916 Log.e(TAG, "Unable to report drop result"); 4917 } 4918 } 4919 4920 // When the drag operation ends, release any local state object 4921 // that may have been in use 4922 if (what == DragEvent.ACTION_DRAG_ENDED) { 4923 setLocalDragState(null); 4924 } 4925 } 4926 } 4927 event.recycle(); 4928 } 4929 4930 public void handleDispatchSystemUiVisibilityChanged(SystemUiVisibilityInfo args) { 4931 if (mSeq != args.seq) { 4932 // The sequence has changed, so we need to update our value and make 4933 // sure to do a traversal afterward so the window manager is given our 4934 // most recent data. 4935 mSeq = args.seq; 4936 mAttachInfo.mForceReportNewAttributes = true; 4937 scheduleTraversals(); 4938 } 4939 if (mView == null) return; 4940 if (args.localChanges != 0) { 4941 mView.updateLocalSystemUiVisibility(args.localValue, args.localChanges); 4942 } 4943 if (mAttachInfo != null) { 4944 int visibility = args.globalVisibility&View.SYSTEM_UI_CLEARABLE_FLAGS; 4945 if (visibility != mAttachInfo.mGlobalSystemUiVisibility) { 4946 mAttachInfo.mGlobalSystemUiVisibility = visibility; 4947 mView.dispatchSystemUiVisibilityChanged(visibility); 4948 } 4949 } 4950 } 4951 4952 public void handleDispatchDoneAnimating() { 4953 if (mWindowsAnimating) { 4954 mWindowsAnimating = false; 4955 if (!mDirty.isEmpty() || mIsAnimating || mFullRedrawNeeded) { 4956 scheduleTraversals(); 4957 } 4958 } 4959 } 4960 4961 public void getLastTouchPoint(Point outLocation) { 4962 outLocation.x = (int) mLastTouchPoint.x; 4963 outLocation.y = (int) mLastTouchPoint.y; 4964 } 4965 4966 public void setDragFocus(View newDragTarget) { 4967 if (mCurrentDragView != newDragTarget) { 4968 mCurrentDragView = newDragTarget; 4969 } 4970 } 4971 4972 private AudioManager getAudioManager() { 4973 if (mView == null) { 4974 throw new IllegalStateException("getAudioManager called when there is no mView"); 4975 } 4976 if (mAudioManager == null) { 4977 mAudioManager = (AudioManager) mView.getContext().getSystemService(Context.AUDIO_SERVICE); 4978 } 4979 return mAudioManager; 4980 } 4981 4982 public AccessibilityInteractionController getAccessibilityInteractionController() { 4983 if (mView == null) { 4984 throw new IllegalStateException("getAccessibilityInteractionController" 4985 + " called when there is no mView"); 4986 } 4987 if (mAccessibilityInteractionController == null) { 4988 mAccessibilityInteractionController = new AccessibilityInteractionController(this); 4989 } 4990 return mAccessibilityInteractionController; 4991 } 4992 4993 private int relayoutWindow(WindowManager.LayoutParams params, int viewVisibility, 4994 boolean insetsPending) throws RemoteException { 4995 4996 float appScale = mAttachInfo.mApplicationScale; 4997 boolean restore = false; 4998 if (params != null && mTranslator != null) { 4999 restore = true; 5000 params.backup(); 5001 mTranslator.translateWindowLayout(params); 5002 } 5003 if (params != null) { 5004 if (DBG) Log.d(TAG, "WindowLayout in layoutWindow:" + params); 5005 } 5006 mPendingConfiguration.seq = 0; 5007 //Log.d(TAG, ">>>>>> CALLING relayout"); 5008 if (params != null && mOrigWindowType != params.type) { 5009 // For compatibility with old apps, don't crash here. 5010 if (mTargetSdkVersion < android.os.Build.VERSION_CODES.ICE_CREAM_SANDWICH) { 5011 Slog.w(TAG, "Window type can not be changed after " 5012 + "the window is added; ignoring change of " + mView); 5013 params.type = mOrigWindowType; 5014 } 5015 } 5016 int relayoutResult = mWindowSession.relayout( 5017 mWindow, mSeq, params, 5018 (int) (mView.getMeasuredWidth() * appScale + 0.5f), 5019 (int) (mView.getMeasuredHeight() * appScale + 0.5f), 5020 viewVisibility, insetsPending ? WindowManagerGlobal.RELAYOUT_INSETS_PENDING : 0, 5021 mWinFrame, mPendingOverscanInsets, mPendingContentInsets, mPendingVisibleInsets, 5022 mPendingConfiguration, mSurface); 5023 //Log.d(TAG, "<<<<<< BACK FROM relayout"); 5024 if (restore) { 5025 params.restore(); 5026 } 5027 5028 if (mTranslator != null) { 5029 mTranslator.translateRectInScreenToAppWinFrame(mWinFrame); 5030 mTranslator.translateRectInScreenToAppWindow(mPendingOverscanInsets); 5031 mTranslator.translateRectInScreenToAppWindow(mPendingContentInsets); 5032 mTranslator.translateRectInScreenToAppWindow(mPendingVisibleInsets); 5033 } 5034 return relayoutResult; 5035 } 5036 5037 /** 5038 * {@inheritDoc} 5039 */ 5040 public void playSoundEffect(int effectId) { 5041 checkThread(); 5042 5043 if (mMediaDisabled) { 5044 return; 5045 } 5046 5047 try { 5048 final AudioManager audioManager = getAudioManager(); 5049 5050 switch (effectId) { 5051 case SoundEffectConstants.CLICK: 5052 audioManager.playSoundEffect(AudioManager.FX_KEY_CLICK); 5053 return; 5054 case SoundEffectConstants.NAVIGATION_DOWN: 5055 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_DOWN); 5056 return; 5057 case SoundEffectConstants.NAVIGATION_LEFT: 5058 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_LEFT); 5059 return; 5060 case SoundEffectConstants.NAVIGATION_RIGHT: 5061 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_RIGHT); 5062 return; 5063 case SoundEffectConstants.NAVIGATION_UP: 5064 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_UP); 5065 return; 5066 default: 5067 throw new IllegalArgumentException("unknown effect id " + effectId + 5068 " not defined in " + SoundEffectConstants.class.getCanonicalName()); 5069 } 5070 } catch (IllegalStateException e) { 5071 // Exception thrown by getAudioManager() when mView is null 5072 Log.e(TAG, "FATAL EXCEPTION when attempting to play sound effect: " + e); 5073 e.printStackTrace(); 5074 } 5075 } 5076 5077 /** 5078 * {@inheritDoc} 5079 */ 5080 public boolean performHapticFeedback(int effectId, boolean always) { 5081 try { 5082 return mWindowSession.performHapticFeedback(mWindow, effectId, always); 5083 } catch (RemoteException e) { 5084 return false; 5085 } 5086 } 5087 5088 /** 5089 * {@inheritDoc} 5090 */ 5091 public View focusSearch(View focused, int direction) { 5092 checkThread(); 5093 if (!(mView instanceof ViewGroup)) { 5094 return null; 5095 } 5096 return FocusFinder.getInstance().findNextFocus((ViewGroup) mView, focused, direction); 5097 } 5098 5099 public void debug() { 5100 mView.debug(); 5101 } 5102 5103 public void dumpGfxInfo(int[] info) { 5104 info[0] = info[1] = 0; 5105 if (mView != null) { 5106 getGfxInfo(mView, info); 5107 } 5108 } 5109 5110 private static void getGfxInfo(View view, int[] info) { 5111 DisplayList displayList = view.mDisplayList; 5112 info[0]++; 5113 if (displayList != null) { 5114 info[1] += displayList.getSize(); 5115 } 5116 5117 if (view instanceof ViewGroup) { 5118 ViewGroup group = (ViewGroup) view; 5119 5120 int count = group.getChildCount(); 5121 for (int i = 0; i < count; i++) { 5122 getGfxInfo(group.getChildAt(i), info); 5123 } 5124 } 5125 } 5126 5127 /** 5128 * @param immediate True, do now if not in traversal. False, put on queue and do later. 5129 * @return True, request has been queued. False, request has been completed. 5130 */ 5131 boolean die(boolean immediate) { 5132 // Make sure we do execute immediately if we are in the middle of a traversal or the damage 5133 // done by dispatchDetachedFromWindow will cause havoc on return. 5134 if (immediate && !mIsInTraversal) { 5135 doDie(); 5136 return false; 5137 } 5138 5139 if (!mIsDrawing) { 5140 destroyHardwareRenderer(); 5141 } else { 5142 Log.e(TAG, "Attempting to destroy the window while drawing!\n" + 5143 " window=" + this + ", title=" + mWindowAttributes.getTitle()); 5144 } 5145 mHandler.sendEmptyMessage(MSG_DIE); 5146 return true; 5147 } 5148 5149 void doDie() { 5150 checkThread(); 5151 if (LOCAL_LOGV) Log.v(TAG, "DIE in " + this + " of " + mSurface); 5152 synchronized (this) { 5153 if (mRemoved) { 5154 return; 5155 } 5156 mRemoved = true; 5157 if (mAdded) { 5158 dispatchDetachedFromWindow(); 5159 } 5160 5161 if (mAdded && !mFirst) { 5162 invalidateDisplayLists(); 5163 destroyHardwareRenderer(); 5164 5165 if (mView != null) { 5166 int viewVisibility = mView.getVisibility(); 5167 boolean viewVisibilityChanged = mViewVisibility != viewVisibility; 5168 if (mWindowAttributesChanged || viewVisibilityChanged) { 5169 // If layout params have been changed, first give them 5170 // to the window manager to make sure it has the correct 5171 // animation info. 5172 try { 5173 if ((relayoutWindow(mWindowAttributes, viewVisibility, false) 5174 & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 5175 mWindowSession.finishDrawing(mWindow); 5176 } 5177 } catch (RemoteException e) { 5178 } 5179 } 5180 5181 mSurface.release(); 5182 } 5183 } 5184 5185 mAdded = false; 5186 } 5187 WindowManagerGlobal.getInstance().doRemoveView(this); 5188 } 5189 5190 public void requestUpdateConfiguration(Configuration config) { 5191 Message msg = mHandler.obtainMessage(MSG_UPDATE_CONFIGURATION, config); 5192 mHandler.sendMessage(msg); 5193 } 5194 5195 public void loadSystemProperties() { 5196 mHandler.post(new Runnable() { 5197 @Override 5198 public void run() { 5199 // Profiling 5200 mProfileRendering = SystemProperties.getBoolean(PROPERTY_PROFILE_RENDERING, false); 5201 profileRendering(mAttachInfo.mHasWindowFocus); 5202 5203 // Media (used by sound effects) 5204 mMediaDisabled = SystemProperties.getBoolean(PROPERTY_MEDIA_DISABLED, false); 5205 5206 // Hardware rendering 5207 if (mAttachInfo.mHardwareRenderer != null) { 5208 if (mAttachInfo.mHardwareRenderer.loadSystemProperties(mHolder.getSurface())) { 5209 invalidate(); 5210 } 5211 } 5212 5213 // Layout debugging 5214 boolean layout = SystemProperties.getBoolean(View.DEBUG_LAYOUT_PROPERTY, false); 5215 if (layout != mAttachInfo.mDebugLayout) { 5216 mAttachInfo.mDebugLayout = layout; 5217 if (!mHandler.hasMessages(MSG_INVALIDATE_WORLD)) { 5218 mHandler.sendEmptyMessageDelayed(MSG_INVALIDATE_WORLD, 200); 5219 } 5220 } 5221 } 5222 }); 5223 } 5224 5225 private void destroyHardwareRenderer() { 5226 AttachInfo attachInfo = mAttachInfo; 5227 HardwareRenderer hardwareRenderer = attachInfo.mHardwareRenderer; 5228 5229 if (hardwareRenderer != null) { 5230 if (mView != null) { 5231 hardwareRenderer.destroyHardwareResources(mView); 5232 } 5233 hardwareRenderer.destroy(true); 5234 hardwareRenderer.setRequested(false); 5235 5236 attachInfo.mHardwareRenderer = null; 5237 attachInfo.mHardwareAccelerated = false; 5238 } 5239 } 5240 5241 public void dispatchFinishInputConnection(InputConnection connection) { 5242 Message msg = mHandler.obtainMessage(MSG_FINISH_INPUT_CONNECTION, connection); 5243 mHandler.sendMessage(msg); 5244 } 5245 5246 public void dispatchResized(Rect frame, Rect overscanInsets, Rect contentInsets, 5247 Rect visibleInsets, boolean reportDraw, Configuration newConfig) { 5248 if (DEBUG_LAYOUT) Log.v(TAG, "Resizing " + this + ": frame=" + frame.toShortString() 5249 + " contentInsets=" + contentInsets.toShortString() 5250 + " visibleInsets=" + visibleInsets.toShortString() 5251 + " reportDraw=" + reportDraw); 5252 Message msg = mHandler.obtainMessage(reportDraw ? MSG_RESIZED_REPORT : MSG_RESIZED); 5253 if (mTranslator != null) { 5254 mTranslator.translateRectInScreenToAppWindow(frame); 5255 mTranslator.translateRectInScreenToAppWindow(overscanInsets); 5256 mTranslator.translateRectInScreenToAppWindow(contentInsets); 5257 mTranslator.translateRectInScreenToAppWindow(visibleInsets); 5258 } 5259 SomeArgs args = SomeArgs.obtain(); 5260 final boolean sameProcessCall = (Binder.getCallingPid() == android.os.Process.myPid()); 5261 args.arg1 = sameProcessCall ? new Rect(frame) : frame; 5262 args.arg2 = sameProcessCall ? new Rect(contentInsets) : contentInsets; 5263 args.arg3 = sameProcessCall ? new Rect(visibleInsets) : visibleInsets; 5264 args.arg4 = sameProcessCall && newConfig != null ? new Configuration(newConfig) : newConfig; 5265 args.arg5 = sameProcessCall ? new Rect(overscanInsets) : overscanInsets; 5266 msg.obj = args; 5267 mHandler.sendMessage(msg); 5268 } 5269 5270 public void dispatchMoved(int newX, int newY) { 5271 if (DEBUG_LAYOUT) Log.v(TAG, "Window moved " + this + ": newX=" + newX + " newY=" + newY); 5272 if (mTranslator != null) { 5273 PointF point = new PointF(newX, newY); 5274 mTranslator.translatePointInScreenToAppWindow(point); 5275 newX = (int) (point.x + 0.5); 5276 newY = (int) (point.y + 0.5); 5277 } 5278 Message msg = mHandler.obtainMessage(MSG_WINDOW_MOVED, newX, newY); 5279 mHandler.sendMessage(msg); 5280 } 5281 5282 /** 5283 * Represents a pending input event that is waiting in a queue. 5284 * 5285 * Input events are processed in serial order by the timestamp specified by 5286 * {@link InputEvent#getEventTimeNano()}. In general, the input dispatcher delivers 5287 * one input event to the application at a time and waits for the application 5288 * to finish handling it before delivering the next one. 5289 * 5290 * However, because the application or IME can synthesize and inject multiple 5291 * key events at a time without going through the input dispatcher, we end up 5292 * needing a queue on the application's side. 5293 */ 5294 private static final class QueuedInputEvent { 5295 public static final int FLAG_DELIVER_POST_IME = 1 << 0; 5296 public static final int FLAG_DEFERRED = 1 << 1; 5297 public static final int FLAG_FINISHED = 1 << 2; 5298 public static final int FLAG_FINISHED_HANDLED = 1 << 3; 5299 public static final int FLAG_RESYNTHESIZED = 1 << 4; 5300 5301 public QueuedInputEvent mNext; 5302 5303 public InputEvent mEvent; 5304 public InputEventReceiver mReceiver; 5305 public int mFlags; 5306 5307 public boolean shouldSkipIme() { 5308 if ((mFlags & FLAG_DELIVER_POST_IME) != 0) { 5309 return true; 5310 } 5311 return mEvent instanceof MotionEvent 5312 && mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER); 5313 } 5314 } 5315 5316 private QueuedInputEvent obtainQueuedInputEvent(InputEvent event, 5317 InputEventReceiver receiver, int flags) { 5318 QueuedInputEvent q = mQueuedInputEventPool; 5319 if (q != null) { 5320 mQueuedInputEventPoolSize -= 1; 5321 mQueuedInputEventPool = q.mNext; 5322 q.mNext = null; 5323 } else { 5324 q = new QueuedInputEvent(); 5325 } 5326 5327 q.mEvent = event; 5328 q.mReceiver = receiver; 5329 q.mFlags = flags; 5330 return q; 5331 } 5332 5333 private void recycleQueuedInputEvent(QueuedInputEvent q) { 5334 q.mEvent = null; 5335 q.mReceiver = null; 5336 5337 if (mQueuedInputEventPoolSize < MAX_QUEUED_INPUT_EVENT_POOL_SIZE) { 5338 mQueuedInputEventPoolSize += 1; 5339 q.mNext = mQueuedInputEventPool; 5340 mQueuedInputEventPool = q; 5341 } 5342 } 5343 5344 void enqueueInputEvent(InputEvent event) { 5345 enqueueInputEvent(event, null, 0, false); 5346 } 5347 5348 void enqueueInputEvent(InputEvent event, 5349 InputEventReceiver receiver, int flags, boolean processImmediately) { 5350 QueuedInputEvent q = obtainQueuedInputEvent(event, receiver, flags); 5351 5352 // Always enqueue the input event in order, regardless of its time stamp. 5353 // We do this because the application or the IME may inject key events 5354 // in response to touch events and we want to ensure that the injected keys 5355 // are processed in the order they were received and we cannot trust that 5356 // the time stamp of injected events are monotonic. 5357 QueuedInputEvent last = mPendingInputEventTail; 5358 if (last == null) { 5359 mPendingInputEventHead = q; 5360 mPendingInputEventTail = q; 5361 } else { 5362 last.mNext = q; 5363 mPendingInputEventTail = q; 5364 } 5365 mPendingInputEventCount += 1; 5366 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 5367 mPendingInputEventCount); 5368 5369 if (processImmediately) { 5370 doProcessInputEvents(); 5371 } else { 5372 scheduleProcessInputEvents(); 5373 } 5374 } 5375 5376 private void scheduleProcessInputEvents() { 5377 if (!mProcessInputEventsScheduled) { 5378 mProcessInputEventsScheduled = true; 5379 Message msg = mHandler.obtainMessage(MSG_PROCESS_INPUT_EVENTS); 5380 msg.setAsynchronous(true); 5381 mHandler.sendMessage(msg); 5382 } 5383 } 5384 5385 void doProcessInputEvents() { 5386 // Deliver all pending input events in the queue. 5387 while (mPendingInputEventHead != null) { 5388 QueuedInputEvent q = mPendingInputEventHead; 5389 mPendingInputEventHead = q.mNext; 5390 if (mPendingInputEventHead == null) { 5391 mPendingInputEventTail = null; 5392 } 5393 q.mNext = null; 5394 5395 mPendingInputEventCount -= 1; 5396 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 5397 mPendingInputEventCount); 5398 5399 deliverInputEvent(q); 5400 } 5401 5402 // We are done processing all input events that we can process right now 5403 // so we can clear the pending flag immediately. 5404 if (mProcessInputEventsScheduled) { 5405 mProcessInputEventsScheduled = false; 5406 mHandler.removeMessages(MSG_PROCESS_INPUT_EVENTS); 5407 } 5408 } 5409 5410 private void deliverInputEvent(QueuedInputEvent q) { 5411 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "deliverInputEvent"); 5412 try { 5413 if (mInputEventConsistencyVerifier != null) { 5414 mInputEventConsistencyVerifier.onInputEvent(q.mEvent, 0); 5415 } 5416 5417 InputStage stage = q.shouldSkipIme() ? mFirstPostImeInputStage : mFirstInputStage; 5418 if (stage != null) { 5419 stage.deliver(q); 5420 } else { 5421 finishInputEvent(q); 5422 } 5423 } finally { 5424 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 5425 } 5426 } 5427 5428 private void finishInputEvent(QueuedInputEvent q) { 5429 if (q.mReceiver != null) { 5430 boolean handled = (q.mFlags & QueuedInputEvent.FLAG_FINISHED_HANDLED) != 0; 5431 q.mReceiver.finishInputEvent(q.mEvent, handled); 5432 } else { 5433 q.mEvent.recycleIfNeededAfterDispatch(); 5434 } 5435 5436 recycleQueuedInputEvent(q); 5437 } 5438 5439 static boolean isTerminalInputEvent(InputEvent event) { 5440 if (event instanceof KeyEvent) { 5441 final KeyEvent keyEvent = (KeyEvent)event; 5442 return keyEvent.getAction() == KeyEvent.ACTION_UP; 5443 } else { 5444 final MotionEvent motionEvent = (MotionEvent)event; 5445 final int action = motionEvent.getAction(); 5446 return action == MotionEvent.ACTION_UP 5447 || action == MotionEvent.ACTION_CANCEL 5448 || action == MotionEvent.ACTION_HOVER_EXIT; 5449 } 5450 } 5451 5452 void scheduleConsumeBatchedInput() { 5453 if (!mConsumeBatchedInputScheduled) { 5454 mConsumeBatchedInputScheduled = true; 5455 mChoreographer.postCallback(Choreographer.CALLBACK_INPUT, 5456 mConsumedBatchedInputRunnable, null); 5457 } 5458 } 5459 5460 void unscheduleConsumeBatchedInput() { 5461 if (mConsumeBatchedInputScheduled) { 5462 mConsumeBatchedInputScheduled = false; 5463 mChoreographer.removeCallbacks(Choreographer.CALLBACK_INPUT, 5464 mConsumedBatchedInputRunnable, null); 5465 } 5466 } 5467 5468 void doConsumeBatchedInput(long frameTimeNanos) { 5469 if (mConsumeBatchedInputScheduled) { 5470 mConsumeBatchedInputScheduled = false; 5471 if (mInputEventReceiver != null) { 5472 mInputEventReceiver.consumeBatchedInputEvents(frameTimeNanos); 5473 } 5474 doProcessInputEvents(); 5475 } 5476 } 5477 5478 final class TraversalRunnable implements Runnable { 5479 @Override 5480 public void run() { 5481 doTraversal(); 5482 } 5483 } 5484 final TraversalRunnable mTraversalRunnable = new TraversalRunnable(); 5485 5486 final class WindowInputEventReceiver extends InputEventReceiver { 5487 public WindowInputEventReceiver(InputChannel inputChannel, Looper looper) { 5488 super(inputChannel, looper); 5489 } 5490 5491 @Override 5492 public void onInputEvent(InputEvent event) { 5493 enqueueInputEvent(event, this, 0, true); 5494 } 5495 5496 @Override 5497 public void onBatchedInputEventPending() { 5498 scheduleConsumeBatchedInput(); 5499 } 5500 5501 @Override 5502 public void dispose() { 5503 unscheduleConsumeBatchedInput(); 5504 super.dispose(); 5505 } 5506 } 5507 WindowInputEventReceiver mInputEventReceiver; 5508 5509 final class ConsumeBatchedInputRunnable implements Runnable { 5510 @Override 5511 public void run() { 5512 doConsumeBatchedInput(mChoreographer.getFrameTimeNanos()); 5513 } 5514 } 5515 final ConsumeBatchedInputRunnable mConsumedBatchedInputRunnable = 5516 new ConsumeBatchedInputRunnable(); 5517 boolean mConsumeBatchedInputScheduled; 5518 5519 final class InvalidateOnAnimationRunnable implements Runnable { 5520 private boolean mPosted; 5521 private ArrayList<View> mViews = new ArrayList<View>(); 5522 private ArrayList<AttachInfo.InvalidateInfo> mViewRects = 5523 new ArrayList<AttachInfo.InvalidateInfo>(); 5524 private View[] mTempViews; 5525 private AttachInfo.InvalidateInfo[] mTempViewRects; 5526 5527 public void addView(View view) { 5528 synchronized (this) { 5529 mViews.add(view); 5530 postIfNeededLocked(); 5531 } 5532 } 5533 5534 public void addViewRect(AttachInfo.InvalidateInfo info) { 5535 synchronized (this) { 5536 mViewRects.add(info); 5537 postIfNeededLocked(); 5538 } 5539 } 5540 5541 public void removeView(View view) { 5542 synchronized (this) { 5543 mViews.remove(view); 5544 5545 for (int i = mViewRects.size(); i-- > 0; ) { 5546 AttachInfo.InvalidateInfo info = mViewRects.get(i); 5547 if (info.target == view) { 5548 mViewRects.remove(i); 5549 info.recycle(); 5550 } 5551 } 5552 5553 if (mPosted && mViews.isEmpty() && mViewRects.isEmpty()) { 5554 mChoreographer.removeCallbacks(Choreographer.CALLBACK_ANIMATION, this, null); 5555 mPosted = false; 5556 } 5557 } 5558 } 5559 5560 @Override 5561 public void run() { 5562 final int viewCount; 5563 final int viewRectCount; 5564 synchronized (this) { 5565 mPosted = false; 5566 5567 viewCount = mViews.size(); 5568 if (viewCount != 0) { 5569 mTempViews = mViews.toArray(mTempViews != null 5570 ? mTempViews : new View[viewCount]); 5571 mViews.clear(); 5572 } 5573 5574 viewRectCount = mViewRects.size(); 5575 if (viewRectCount != 0) { 5576 mTempViewRects = mViewRects.toArray(mTempViewRects != null 5577 ? mTempViewRects : new AttachInfo.InvalidateInfo[viewRectCount]); 5578 mViewRects.clear(); 5579 } 5580 } 5581 5582 for (int i = 0; i < viewCount; i++) { 5583 mTempViews[i].invalidate(); 5584 mTempViews[i] = null; 5585 } 5586 5587 for (int i = 0; i < viewRectCount; i++) { 5588 final View.AttachInfo.InvalidateInfo info = mTempViewRects[i]; 5589 info.target.invalidate(info.left, info.top, info.right, info.bottom); 5590 info.recycle(); 5591 } 5592 } 5593 5594 private void postIfNeededLocked() { 5595 if (!mPosted) { 5596 mChoreographer.postCallback(Choreographer.CALLBACK_ANIMATION, this, null); 5597 mPosted = true; 5598 } 5599 } 5600 } 5601 final InvalidateOnAnimationRunnable mInvalidateOnAnimationRunnable = 5602 new InvalidateOnAnimationRunnable(); 5603 5604 public void dispatchInvalidateDelayed(View view, long delayMilliseconds) { 5605 Message msg = mHandler.obtainMessage(MSG_INVALIDATE, view); 5606 mHandler.sendMessageDelayed(msg, delayMilliseconds); 5607 } 5608 5609 public void dispatchInvalidateRectDelayed(AttachInfo.InvalidateInfo info, 5610 long delayMilliseconds) { 5611 final Message msg = mHandler.obtainMessage(MSG_INVALIDATE_RECT, info); 5612 mHandler.sendMessageDelayed(msg, delayMilliseconds); 5613 } 5614 5615 public void dispatchInvalidateOnAnimation(View view) { 5616 mInvalidateOnAnimationRunnable.addView(view); 5617 } 5618 5619 public void dispatchInvalidateRectOnAnimation(AttachInfo.InvalidateInfo info) { 5620 mInvalidateOnAnimationRunnable.addViewRect(info); 5621 } 5622 5623 public void enqueueDisplayList(DisplayList displayList) { 5624 mDisplayLists.add(displayList); 5625 } 5626 5627 public void cancelInvalidate(View view) { 5628 mHandler.removeMessages(MSG_INVALIDATE, view); 5629 // fixme: might leak the AttachInfo.InvalidateInfo objects instead of returning 5630 // them to the pool 5631 mHandler.removeMessages(MSG_INVALIDATE_RECT, view); 5632 mInvalidateOnAnimationRunnable.removeView(view); 5633 } 5634 5635 public void dispatchKey(KeyEvent event) { 5636 Message msg = mHandler.obtainMessage(MSG_DISPATCH_KEY, event); 5637 msg.setAsynchronous(true); 5638 mHandler.sendMessage(msg); 5639 } 5640 5641 public void dispatchKeyFromIme(KeyEvent event) { 5642 Message msg = mHandler.obtainMessage(MSG_DISPATCH_KEY_FROM_IME, event); 5643 msg.setAsynchronous(true); 5644 mHandler.sendMessage(msg); 5645 } 5646 5647 public void dispatchUnhandledKey(KeyEvent event) { 5648 if ((event.getFlags() & KeyEvent.FLAG_FALLBACK) == 0) { 5649 final KeyCharacterMap kcm = event.getKeyCharacterMap(); 5650 final int keyCode = event.getKeyCode(); 5651 final int metaState = event.getMetaState(); 5652 5653 // Check for fallback actions specified by the key character map. 5654 KeyCharacterMap.FallbackAction fallbackAction = 5655 kcm.getFallbackAction(keyCode, metaState); 5656 if (fallbackAction != null) { 5657 final int flags = event.getFlags() | KeyEvent.FLAG_FALLBACK; 5658 KeyEvent fallbackEvent = KeyEvent.obtain( 5659 event.getDownTime(), event.getEventTime(), 5660 event.getAction(), fallbackAction.keyCode, 5661 event.getRepeatCount(), fallbackAction.metaState, 5662 event.getDeviceId(), event.getScanCode(), 5663 flags, event.getSource(), null); 5664 fallbackAction.recycle(); 5665 5666 dispatchKey(fallbackEvent); 5667 } 5668 } 5669 } 5670 5671 public void dispatchAppVisibility(boolean visible) { 5672 Message msg = mHandler.obtainMessage(MSG_DISPATCH_APP_VISIBILITY); 5673 msg.arg1 = visible ? 1 : 0; 5674 mHandler.sendMessage(msg); 5675 } 5676 5677 public void dispatchScreenStateChange(boolean on) { 5678 Message msg = mHandler.obtainMessage(MSG_DISPATCH_SCREEN_STATE); 5679 msg.arg1 = on ? 1 : 0; 5680 mHandler.sendMessage(msg); 5681 } 5682 5683 public void dispatchGetNewSurface() { 5684 Message msg = mHandler.obtainMessage(MSG_DISPATCH_GET_NEW_SURFACE); 5685 mHandler.sendMessage(msg); 5686 } 5687 5688 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 5689 Message msg = Message.obtain(); 5690 msg.what = MSG_WINDOW_FOCUS_CHANGED; 5691 msg.arg1 = hasFocus ? 1 : 0; 5692 msg.arg2 = inTouchMode ? 1 : 0; 5693 mHandler.sendMessage(msg); 5694 } 5695 5696 public void dispatchCloseSystemDialogs(String reason) { 5697 Message msg = Message.obtain(); 5698 msg.what = MSG_CLOSE_SYSTEM_DIALOGS; 5699 msg.obj = reason; 5700 mHandler.sendMessage(msg); 5701 } 5702 5703 public void dispatchDragEvent(DragEvent event) { 5704 final int what; 5705 if (event.getAction() == DragEvent.ACTION_DRAG_LOCATION) { 5706 what = MSG_DISPATCH_DRAG_LOCATION_EVENT; 5707 mHandler.removeMessages(what); 5708 } else { 5709 what = MSG_DISPATCH_DRAG_EVENT; 5710 } 5711 Message msg = mHandler.obtainMessage(what, event); 5712 mHandler.sendMessage(msg); 5713 } 5714 5715 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 5716 int localValue, int localChanges) { 5717 SystemUiVisibilityInfo args = new SystemUiVisibilityInfo(); 5718 args.seq = seq; 5719 args.globalVisibility = globalVisibility; 5720 args.localValue = localValue; 5721 args.localChanges = localChanges; 5722 mHandler.sendMessage(mHandler.obtainMessage(MSG_DISPATCH_SYSTEM_UI_VISIBILITY, args)); 5723 } 5724 5725 public void dispatchDoneAnimating() { 5726 mHandler.sendEmptyMessage(MSG_DISPATCH_DONE_ANIMATING); 5727 } 5728 5729 public void dispatchCheckFocus() { 5730 if (!mHandler.hasMessages(MSG_CHECK_FOCUS)) { 5731 // This will result in a call to checkFocus() below. 5732 mHandler.sendEmptyMessage(MSG_CHECK_FOCUS); 5733 } 5734 } 5735 5736 /** 5737 * Post a callback to send a 5738 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 5739 * This event is send at most once every 5740 * {@link ViewConfiguration#getSendRecurringAccessibilityEventsInterval()}. 5741 */ 5742 private void postSendWindowContentChangedCallback(View source) { 5743 if (mSendWindowContentChangedAccessibilityEvent == null) { 5744 mSendWindowContentChangedAccessibilityEvent = 5745 new SendWindowContentChangedAccessibilityEvent(); 5746 } 5747 mSendWindowContentChangedAccessibilityEvent.runOrPost(source); 5748 } 5749 5750 /** 5751 * Remove a posted callback to send a 5752 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 5753 */ 5754 private void removeSendWindowContentChangedCallback() { 5755 if (mSendWindowContentChangedAccessibilityEvent != null) { 5756 mHandler.removeCallbacks(mSendWindowContentChangedAccessibilityEvent); 5757 } 5758 } 5759 5760 public boolean showContextMenuForChild(View originalView) { 5761 return false; 5762 } 5763 5764 public ActionMode startActionModeForChild(View originalView, ActionMode.Callback callback) { 5765 return null; 5766 } 5767 5768 public void createContextMenu(ContextMenu menu) { 5769 } 5770 5771 public void childDrawableStateChanged(View child) { 5772 } 5773 5774 public boolean requestSendAccessibilityEvent(View child, AccessibilityEvent event) { 5775 if (mView == null) { 5776 return false; 5777 } 5778 // Intercept accessibility focus events fired by virtual nodes to keep 5779 // track of accessibility focus position in such nodes. 5780 final int eventType = event.getEventType(); 5781 switch (eventType) { 5782 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUSED: { 5783 final long sourceNodeId = event.getSourceNodeId(); 5784 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 5785 sourceNodeId); 5786 View source = mView.findViewByAccessibilityId(accessibilityViewId); 5787 if (source != null) { 5788 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 5789 if (provider != null) { 5790 AccessibilityNodeInfo node = provider.createAccessibilityNodeInfo( 5791 AccessibilityNodeInfo.getVirtualDescendantId(sourceNodeId)); 5792 setAccessibilityFocus(source, node); 5793 } 5794 } 5795 } break; 5796 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUS_CLEARED: { 5797 final long sourceNodeId = event.getSourceNodeId(); 5798 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 5799 sourceNodeId); 5800 View source = mView.findViewByAccessibilityId(accessibilityViewId); 5801 if (source != null) { 5802 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 5803 if (provider != null) { 5804 setAccessibilityFocus(null, null); 5805 } 5806 } 5807 } break; 5808 } 5809 mAccessibilityManager.sendAccessibilityEvent(event); 5810 return true; 5811 } 5812 5813 @Override 5814 public void childAccessibilityStateChanged(View child) { 5815 postSendWindowContentChangedCallback(child); 5816 } 5817 5818 @Override 5819 public boolean canResolveLayoutDirection() { 5820 return true; 5821 } 5822 5823 @Override 5824 public boolean isLayoutDirectionResolved() { 5825 return true; 5826 } 5827 5828 @Override 5829 public int getLayoutDirection() { 5830 return View.LAYOUT_DIRECTION_RESOLVED_DEFAULT; 5831 } 5832 5833 @Override 5834 public boolean canResolveTextDirection() { 5835 return true; 5836 } 5837 5838 @Override 5839 public boolean isTextDirectionResolved() { 5840 return true; 5841 } 5842 5843 @Override 5844 public int getTextDirection() { 5845 return View.TEXT_DIRECTION_RESOLVED_DEFAULT; 5846 } 5847 5848 @Override 5849 public boolean canResolveTextAlignment() { 5850 return true; 5851 } 5852 5853 @Override 5854 public boolean isTextAlignmentResolved() { 5855 return true; 5856 } 5857 5858 @Override 5859 public int getTextAlignment() { 5860 return View.TEXT_ALIGNMENT_RESOLVED_DEFAULT; 5861 } 5862 5863 private View getCommonPredecessor(View first, View second) { 5864 if (mAttachInfo != null) { 5865 if (mTempHashSet == null) { 5866 mTempHashSet = new HashSet<View>(); 5867 } 5868 HashSet<View> seen = mTempHashSet; 5869 seen.clear(); 5870 View firstCurrent = first; 5871 while (firstCurrent != null) { 5872 seen.add(firstCurrent); 5873 ViewParent firstCurrentParent = firstCurrent.mParent; 5874 if (firstCurrentParent instanceof View) { 5875 firstCurrent = (View) firstCurrentParent; 5876 } else { 5877 firstCurrent = null; 5878 } 5879 } 5880 View secondCurrent = second; 5881 while (secondCurrent != null) { 5882 if (seen.contains(secondCurrent)) { 5883 seen.clear(); 5884 return secondCurrent; 5885 } 5886 ViewParent secondCurrentParent = secondCurrent.mParent; 5887 if (secondCurrentParent instanceof View) { 5888 secondCurrent = (View) secondCurrentParent; 5889 } else { 5890 secondCurrent = null; 5891 } 5892 } 5893 seen.clear(); 5894 } 5895 return null; 5896 } 5897 5898 void checkThread() { 5899 if (mThread != Thread.currentThread()) { 5900 throw new CalledFromWrongThreadException( 5901 "Only the original thread that created a view hierarchy can touch its views."); 5902 } 5903 } 5904 5905 public void requestDisallowInterceptTouchEvent(boolean disallowIntercept) { 5906 // ViewAncestor never intercepts touch event, so this can be a no-op 5907 } 5908 5909 public boolean requestChildRectangleOnScreen(View child, Rect rectangle, boolean immediate) { 5910 final boolean scrolled = scrollToRectOrFocus(rectangle, immediate); 5911 if (rectangle != null) { 5912 mTempRect.set(rectangle); 5913 mTempRect.offset(0, -mCurScrollY); 5914 mTempRect.offset(mAttachInfo.mWindowLeft, mAttachInfo.mWindowTop); 5915 try { 5916 mWindowSession.onRectangleOnScreenRequested(mWindow, mTempRect, immediate); 5917 } catch (RemoteException re) { 5918 /* ignore */ 5919 } 5920 } 5921 return scrolled; 5922 } 5923 5924 public void childHasTransientStateChanged(View child, boolean hasTransientState) { 5925 // Do nothing. 5926 } 5927 5928 class TakenSurfaceHolder extends BaseSurfaceHolder { 5929 @Override 5930 public boolean onAllowLockCanvas() { 5931 return mDrawingAllowed; 5932 } 5933 5934 @Override 5935 public void onRelayoutContainer() { 5936 // Not currently interesting -- from changing between fixed and layout size. 5937 } 5938 5939 public void setFormat(int format) { 5940 ((RootViewSurfaceTaker)mView).setSurfaceFormat(format); 5941 } 5942 5943 public void setType(int type) { 5944 ((RootViewSurfaceTaker)mView).setSurfaceType(type); 5945 } 5946 5947 @Override 5948 public void onUpdateSurface() { 5949 // We take care of format and type changes on our own. 5950 throw new IllegalStateException("Shouldn't be here"); 5951 } 5952 5953 public boolean isCreating() { 5954 return mIsCreating; 5955 } 5956 5957 @Override 5958 public void setFixedSize(int width, int height) { 5959 throw new UnsupportedOperationException( 5960 "Currently only support sizing from layout"); 5961 } 5962 5963 public void setKeepScreenOn(boolean screenOn) { 5964 ((RootViewSurfaceTaker)mView).setSurfaceKeepScreenOn(screenOn); 5965 } 5966 } 5967 5968 static class W extends IWindow.Stub { 5969 private final WeakReference<ViewRootImpl> mViewAncestor; 5970 private final IWindowSession mWindowSession; 5971 5972 W(ViewRootImpl viewAncestor) { 5973 mViewAncestor = new WeakReference<ViewRootImpl>(viewAncestor); 5974 mWindowSession = viewAncestor.mWindowSession; 5975 } 5976 5977 public void resized(Rect frame, Rect overscanInsets, Rect contentInsets, 5978 Rect visibleInsets, boolean reportDraw, Configuration newConfig) { 5979 final ViewRootImpl viewAncestor = mViewAncestor.get(); 5980 if (viewAncestor != null) { 5981 viewAncestor.dispatchResized(frame, overscanInsets, contentInsets, 5982 visibleInsets, reportDraw, newConfig); 5983 } 5984 } 5985 5986 @Override 5987 public void moved(int newX, int newY) { 5988 final ViewRootImpl viewAncestor = mViewAncestor.get(); 5989 if (viewAncestor != null) { 5990 viewAncestor.dispatchMoved(newX, newY); 5991 } 5992 } 5993 5994 public void dispatchAppVisibility(boolean visible) { 5995 final ViewRootImpl viewAncestor = mViewAncestor.get(); 5996 if (viewAncestor != null) { 5997 viewAncestor.dispatchAppVisibility(visible); 5998 } 5999 } 6000 6001 public void dispatchScreenState(boolean on) { 6002 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6003 if (viewAncestor != null) { 6004 viewAncestor.dispatchScreenStateChange(on); 6005 } 6006 } 6007 6008 public void dispatchGetNewSurface() { 6009 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6010 if (viewAncestor != null) { 6011 viewAncestor.dispatchGetNewSurface(); 6012 } 6013 } 6014 6015 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 6016 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6017 if (viewAncestor != null) { 6018 viewAncestor.windowFocusChanged(hasFocus, inTouchMode); 6019 } 6020 } 6021 6022 private static int checkCallingPermission(String permission) { 6023 try { 6024 return ActivityManagerNative.getDefault().checkPermission( 6025 permission, Binder.getCallingPid(), Binder.getCallingUid()); 6026 } catch (RemoteException e) { 6027 return PackageManager.PERMISSION_DENIED; 6028 } 6029 } 6030 6031 public void executeCommand(String command, String parameters, ParcelFileDescriptor out) { 6032 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6033 if (viewAncestor != null) { 6034 final View view = viewAncestor.mView; 6035 if (view != null) { 6036 if (checkCallingPermission(Manifest.permission.DUMP) != 6037 PackageManager.PERMISSION_GRANTED) { 6038 throw new SecurityException("Insufficient permissions to invoke" 6039 + " executeCommand() from pid=" + Binder.getCallingPid() 6040 + ", uid=" + Binder.getCallingUid()); 6041 } 6042 6043 OutputStream clientStream = null; 6044 try { 6045 clientStream = new ParcelFileDescriptor.AutoCloseOutputStream(out); 6046 ViewDebug.dispatchCommand(view, command, parameters, clientStream); 6047 } catch (IOException e) { 6048 e.printStackTrace(); 6049 } finally { 6050 if (clientStream != null) { 6051 try { 6052 clientStream.close(); 6053 } catch (IOException e) { 6054 e.printStackTrace(); 6055 } 6056 } 6057 } 6058 } 6059 } 6060 } 6061 6062 public void closeSystemDialogs(String reason) { 6063 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6064 if (viewAncestor != null) { 6065 viewAncestor.dispatchCloseSystemDialogs(reason); 6066 } 6067 } 6068 6069 public void dispatchWallpaperOffsets(float x, float y, float xStep, float yStep, 6070 boolean sync) { 6071 if (sync) { 6072 try { 6073 mWindowSession.wallpaperOffsetsComplete(asBinder()); 6074 } catch (RemoteException e) { 6075 } 6076 } 6077 } 6078 6079 public void dispatchWallpaperCommand(String action, int x, int y, 6080 int z, Bundle extras, boolean sync) { 6081 if (sync) { 6082 try { 6083 mWindowSession.wallpaperCommandComplete(asBinder(), null); 6084 } catch (RemoteException e) { 6085 } 6086 } 6087 } 6088 6089 /* Drag/drop */ 6090 public void dispatchDragEvent(DragEvent event) { 6091 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6092 if (viewAncestor != null) { 6093 viewAncestor.dispatchDragEvent(event); 6094 } 6095 } 6096 6097 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 6098 int localValue, int localChanges) { 6099 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6100 if (viewAncestor != null) { 6101 viewAncestor.dispatchSystemUiVisibilityChanged(seq, globalVisibility, 6102 localValue, localChanges); 6103 } 6104 } 6105 6106 public void doneAnimating() { 6107 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6108 if (viewAncestor != null) { 6109 viewAncestor.dispatchDoneAnimating(); 6110 } 6111 } 6112 } 6113 6114 public static final class CalledFromWrongThreadException extends AndroidRuntimeException { 6115 public CalledFromWrongThreadException(String msg) { 6116 super(msg); 6117 } 6118 } 6119 6120 private SurfaceHolder mHolder = new SurfaceHolder() { 6121 // we only need a SurfaceHolder for opengl. it would be nice 6122 // to implement everything else though, especially the callback 6123 // support (opengl doesn't make use of it right now, but eventually 6124 // will). 6125 public Surface getSurface() { 6126 return mSurface; 6127 } 6128 6129 public boolean isCreating() { 6130 return false; 6131 } 6132 6133 public void addCallback(Callback callback) { 6134 } 6135 6136 public void removeCallback(Callback callback) { 6137 } 6138 6139 public void setFixedSize(int width, int height) { 6140 } 6141 6142 public void setSizeFromLayout() { 6143 } 6144 6145 public void setFormat(int format) { 6146 } 6147 6148 public void setType(int type) { 6149 } 6150 6151 public void setKeepScreenOn(boolean screenOn) { 6152 } 6153 6154 public Canvas lockCanvas() { 6155 return null; 6156 } 6157 6158 public Canvas lockCanvas(Rect dirty) { 6159 return null; 6160 } 6161 6162 public void unlockCanvasAndPost(Canvas canvas) { 6163 } 6164 public Rect getSurfaceFrame() { 6165 return null; 6166 } 6167 }; 6168 6169 static RunQueue getRunQueue() { 6170 RunQueue rq = sRunQueues.get(); 6171 if (rq != null) { 6172 return rq; 6173 } 6174 rq = new RunQueue(); 6175 sRunQueues.set(rq); 6176 return rq; 6177 } 6178 6179 /** 6180 * The run queue is used to enqueue pending work from Views when no Handler is 6181 * attached. The work is executed during the next call to performTraversals on 6182 * the thread. 6183 * @hide 6184 */ 6185 static final class RunQueue { 6186 private final ArrayList<HandlerAction> mActions = new ArrayList<HandlerAction>(); 6187 6188 void post(Runnable action) { 6189 postDelayed(action, 0); 6190 } 6191 6192 void postDelayed(Runnable action, long delayMillis) { 6193 HandlerAction handlerAction = new HandlerAction(); 6194 handlerAction.action = action; 6195 handlerAction.delay = delayMillis; 6196 6197 synchronized (mActions) { 6198 mActions.add(handlerAction); 6199 } 6200 } 6201 6202 void removeCallbacks(Runnable action) { 6203 final HandlerAction handlerAction = new HandlerAction(); 6204 handlerAction.action = action; 6205 6206 synchronized (mActions) { 6207 final ArrayList<HandlerAction> actions = mActions; 6208 6209 while (actions.remove(handlerAction)) { 6210 // Keep going 6211 } 6212 } 6213 } 6214 6215 void executeActions(Handler handler) { 6216 synchronized (mActions) { 6217 final ArrayList<HandlerAction> actions = mActions; 6218 final int count = actions.size(); 6219 6220 for (int i = 0; i < count; i++) { 6221 final HandlerAction handlerAction = actions.get(i); 6222 handler.postDelayed(handlerAction.action, handlerAction.delay); 6223 } 6224 6225 actions.clear(); 6226 } 6227 } 6228 6229 private static class HandlerAction { 6230 Runnable action; 6231 long delay; 6232 6233 @Override 6234 public boolean equals(Object o) { 6235 if (this == o) return true; 6236 if (o == null || getClass() != o.getClass()) return false; 6237 6238 HandlerAction that = (HandlerAction) o; 6239 return !(action != null ? !action.equals(that.action) : that.action != null); 6240 6241 } 6242 6243 @Override 6244 public int hashCode() { 6245 int result = action != null ? action.hashCode() : 0; 6246 result = 31 * result + (int) (delay ^ (delay >>> 32)); 6247 return result; 6248 } 6249 } 6250 } 6251 6252 /** 6253 * Class for managing the accessibility interaction connection 6254 * based on the global accessibility state. 6255 */ 6256 final class AccessibilityInteractionConnectionManager 6257 implements AccessibilityStateChangeListener { 6258 public void onAccessibilityStateChanged(boolean enabled) { 6259 if (enabled) { 6260 ensureConnection(); 6261 if (mAttachInfo != null && mAttachInfo.mHasWindowFocus) { 6262 mView.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 6263 View focusedView = mView.findFocus(); 6264 if (focusedView != null && focusedView != mView) { 6265 focusedView.sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_FOCUSED); 6266 } 6267 } 6268 } else { 6269 ensureNoConnection(); 6270 mHandler.obtainMessage(MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST).sendToTarget(); 6271 } 6272 } 6273 6274 public void ensureConnection() { 6275 if (mAttachInfo != null) { 6276 final boolean registered = 6277 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED; 6278 if (!registered) { 6279 mAttachInfo.mAccessibilityWindowId = 6280 mAccessibilityManager.addAccessibilityInteractionConnection(mWindow, 6281 new AccessibilityInteractionConnection(ViewRootImpl.this)); 6282 } 6283 } 6284 } 6285 6286 public void ensureNoConnection() { 6287 final boolean registered = 6288 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED; 6289 if (registered) { 6290 mAttachInfo.mAccessibilityWindowId = AccessibilityNodeInfo.UNDEFINED; 6291 mAccessibilityManager.removeAccessibilityInteractionConnection(mWindow); 6292 } 6293 } 6294 } 6295 6296 /** 6297 * This class is an interface this ViewAncestor provides to the 6298 * AccessibilityManagerService to the latter can interact with 6299 * the view hierarchy in this ViewAncestor. 6300 */ 6301 static final class AccessibilityInteractionConnection 6302 extends IAccessibilityInteractionConnection.Stub { 6303 private final WeakReference<ViewRootImpl> mViewRootImpl; 6304 6305 AccessibilityInteractionConnection(ViewRootImpl viewRootImpl) { 6306 mViewRootImpl = new WeakReference<ViewRootImpl>(viewRootImpl); 6307 } 6308 6309 @Override 6310 public void findAccessibilityNodeInfoByAccessibilityId(long accessibilityNodeId, 6311 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 6312 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6313 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6314 if (viewRootImpl != null && viewRootImpl.mView != null) { 6315 viewRootImpl.getAccessibilityInteractionController() 6316 .findAccessibilityNodeInfoByAccessibilityIdClientThread(accessibilityNodeId, 6317 interactionId, callback, flags, interrogatingPid, interrogatingTid, 6318 spec); 6319 } else { 6320 // We cannot make the call and notify the caller so it does not wait. 6321 try { 6322 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 6323 } catch (RemoteException re) { 6324 /* best effort - ignore */ 6325 } 6326 } 6327 } 6328 6329 @Override 6330 public void performAccessibilityAction(long accessibilityNodeId, int action, 6331 Bundle arguments, int interactionId, 6332 IAccessibilityInteractionConnectionCallback callback, int flags, 6333 int interogatingPid, long interrogatingTid) { 6334 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6335 if (viewRootImpl != null && viewRootImpl.mView != null) { 6336 viewRootImpl.getAccessibilityInteractionController() 6337 .performAccessibilityActionClientThread(accessibilityNodeId, action, arguments, 6338 interactionId, callback, flags, interogatingPid, interrogatingTid); 6339 } else { 6340 // We cannot make the call and notify the caller so it does not wait. 6341 try { 6342 callback.setPerformAccessibilityActionResult(false, interactionId); 6343 } catch (RemoteException re) { 6344 /* best effort - ignore */ 6345 } 6346 } 6347 } 6348 6349 @Override 6350 public void findAccessibilityNodeInfosByViewId(long accessibilityNodeId, 6351 String viewId, int interactionId, 6352 IAccessibilityInteractionConnectionCallback callback, int flags, 6353 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6354 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6355 if (viewRootImpl != null && viewRootImpl.mView != null) { 6356 viewRootImpl.getAccessibilityInteractionController() 6357 .findAccessibilityNodeInfosByViewIdClientThread(accessibilityNodeId, 6358 viewId, interactionId, callback, flags, interrogatingPid, 6359 interrogatingTid, spec); 6360 } else { 6361 // We cannot make the call and notify the caller so it does not wait. 6362 try { 6363 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6364 } catch (RemoteException re) { 6365 /* best effort - ignore */ 6366 } 6367 } 6368 } 6369 6370 @Override 6371 public void findAccessibilityNodeInfosByText(long accessibilityNodeId, String text, 6372 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 6373 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6374 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6375 if (viewRootImpl != null && viewRootImpl.mView != null) { 6376 viewRootImpl.getAccessibilityInteractionController() 6377 .findAccessibilityNodeInfosByTextClientThread(accessibilityNodeId, text, 6378 interactionId, callback, flags, interrogatingPid, interrogatingTid, 6379 spec); 6380 } else { 6381 // We cannot make the call and notify the caller so it does not wait. 6382 try { 6383 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 6384 } catch (RemoteException re) { 6385 /* best effort - ignore */ 6386 } 6387 } 6388 } 6389 6390 @Override 6391 public void findFocus(long accessibilityNodeId, int focusType, int interactionId, 6392 IAccessibilityInteractionConnectionCallback callback, int flags, 6393 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6394 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6395 if (viewRootImpl != null && viewRootImpl.mView != null) { 6396 viewRootImpl.getAccessibilityInteractionController() 6397 .findFocusClientThread(accessibilityNodeId, focusType, interactionId, callback, 6398 flags, interrogatingPid, interrogatingTid, spec); 6399 } else { 6400 // We cannot make the call and notify the caller so it does not wait. 6401 try { 6402 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6403 } catch (RemoteException re) { 6404 /* best effort - ignore */ 6405 } 6406 } 6407 } 6408 6409 @Override 6410 public void focusSearch(long accessibilityNodeId, int direction, int interactionId, 6411 IAccessibilityInteractionConnectionCallback callback, int flags, 6412 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6413 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6414 if (viewRootImpl != null && viewRootImpl.mView != null) { 6415 viewRootImpl.getAccessibilityInteractionController() 6416 .focusSearchClientThread(accessibilityNodeId, direction, interactionId, 6417 callback, flags, interrogatingPid, interrogatingTid, spec); 6418 } else { 6419 // We cannot make the call and notify the caller so it does not wait. 6420 try { 6421 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6422 } catch (RemoteException re) { 6423 /* best effort - ignore */ 6424 } 6425 } 6426 } 6427 } 6428 6429 private class SendWindowContentChangedAccessibilityEvent implements Runnable { 6430 public View mSource; 6431 public long mLastEventTimeMillis; 6432 6433 public void run() { 6434 mLastEventTimeMillis = SystemClock.uptimeMillis(); 6435 AccessibilityEvent event = AccessibilityEvent.obtain(); 6436 event.setEventType(AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED); 6437 event.setContentChangeType(AccessibilityEvent.CONTENT_CHANGE_TYPE_SUBTREE); 6438 mSource.sendAccessibilityEventUnchecked(event); 6439 mSource.resetSubtreeAccessibilityStateChanged(); 6440 mSource = null; 6441 } 6442 6443 public void runOrPost(View source) { 6444 if (mSource != null) { 6445 mSource = getCommonPredecessor(mSource, source); 6446 return; 6447 } 6448 mSource = source; 6449 final long timeSinceLastMillis = SystemClock.uptimeMillis() - mLastEventTimeMillis; 6450 final long minEventIntevalMillis = 6451 ViewConfiguration.getSendRecurringAccessibilityEventsInterval(); 6452 if (timeSinceLastMillis >= minEventIntevalMillis) { 6453 mSource.removeCallbacks(this); 6454 run(); 6455 } else { 6456 mSource.postDelayed(this, minEventIntevalMillis - timeSinceLastMillis); 6457 } 6458 } 6459 } 6460} 6461