ViewRootImpl.java revision 4969fecf074c3e38dc560aaa283868ea728be946
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 /** 317 * Consistency verifier for debugging purposes. 318 */ 319 protected final InputEventConsistencyVerifier mInputEventConsistencyVerifier = 320 InputEventConsistencyVerifier.isInstrumentationEnabled() ? 321 new InputEventConsistencyVerifier(this, 0) : null; 322 323 static final class SystemUiVisibilityInfo { 324 int seq; 325 int globalVisibility; 326 int localValue; 327 int localChanges; 328 } 329 330 public ViewRootImpl(Context context, Display display) { 331 mContext = context; 332 mWindowSession = WindowManagerGlobal.getWindowSession(); 333 mDisplay = display; 334 mBasePackageName = context.getBasePackageName(); 335 336 CompatibilityInfoHolder cih = display.getCompatibilityInfo(); 337 mCompatibilityInfo = cih != null ? cih : new CompatibilityInfoHolder(); 338 339 mThread = Thread.currentThread(); 340 mLocation = new WindowLeaked(null); 341 mLocation.fillInStackTrace(); 342 mWidth = -1; 343 mHeight = -1; 344 mDirty = new Rect(); 345 mTempRect = new Rect(); 346 mVisRect = new Rect(); 347 mWinFrame = new Rect(); 348 mWindow = new W(this); 349 mTargetSdkVersion = context.getApplicationInfo().targetSdkVersion; 350 mViewVisibility = View.GONE; 351 mTransparentRegion = new Region(); 352 mPreviousTransparentRegion = new Region(); 353 mFirst = true; // true for the first time the view is added 354 mAdded = false; 355 mAccessibilityManager = AccessibilityManager.getInstance(context); 356 mAccessibilityInteractionConnectionManager = 357 new AccessibilityInteractionConnectionManager(); 358 mAccessibilityManager.addAccessibilityStateChangeListener( 359 mAccessibilityInteractionConnectionManager); 360 mAttachInfo = new View.AttachInfo(mWindowSession, mWindow, display, this, mHandler, this); 361 mViewConfiguration = ViewConfiguration.get(context); 362 mDensity = context.getResources().getDisplayMetrics().densityDpi; 363 mNoncompatDensity = context.getResources().getDisplayMetrics().noncompatDensityDpi; 364 mFallbackEventHandler = PolicyManager.makeNewFallbackEventHandler(context); 365 mChoreographer = Choreographer.getInstance(); 366 367 PowerManager powerManager = (PowerManager) context.getSystemService(Context.POWER_SERVICE); 368 mAttachInfo.mScreenOn = powerManager.isScreenOn(); 369 loadSystemProperties(); 370 } 371 372 public static void addFirstDrawHandler(Runnable callback) { 373 synchronized (sFirstDrawHandlers) { 374 if (!sFirstDrawComplete) { 375 sFirstDrawHandlers.add(callback); 376 } 377 } 378 } 379 380 public static void addConfigCallback(ComponentCallbacks callback) { 381 synchronized (sConfigCallbacks) { 382 sConfigCallbacks.add(callback); 383 } 384 } 385 386 // FIXME for perf testing only 387 private boolean mProfile = false; 388 389 /** 390 * Call this to profile the next traversal call. 391 * FIXME for perf testing only. Remove eventually 392 */ 393 public void profile() { 394 mProfile = true; 395 } 396 397 /** 398 * Indicates whether we are in touch mode. Calling this method triggers an IPC 399 * call and should be avoided whenever possible. 400 * 401 * @return True, if the device is in touch mode, false otherwise. 402 * 403 * @hide 404 */ 405 static boolean isInTouchMode() { 406 IWindowSession windowSession = WindowManagerGlobal.peekWindowSession(); 407 if (windowSession != null) { 408 try { 409 return windowSession.getInTouchMode(); 410 } catch (RemoteException e) { 411 } 412 } 413 return false; 414 } 415 416 /** 417 * We have one child 418 */ 419 public void setView(View view, WindowManager.LayoutParams attrs, View panelParentView) { 420 synchronized (this) { 421 if (mView == null) { 422 mView = view; 423 Slog.d(TAG, "setView: b9406261 setting mView to " + view + " mAdded=" + mAdded 424 + " Callers=" + Debug.getCallers(4)); 425 mViewLayoutDirectionInitial = mView.getRawLayoutDirection(); 426 mFallbackEventHandler.setView(view); 427 mWindowAttributes.copyFrom(attrs); 428 if (mWindowAttributes.packageName == null) { 429 mWindowAttributes.packageName = mBasePackageName; 430 } 431 attrs = mWindowAttributes; 432 // Keep track of the actual window flags supplied by the client. 433 mClientWindowLayoutFlags = attrs.flags; 434 435 setAccessibilityFocus(null, null); 436 437 if (view instanceof RootViewSurfaceTaker) { 438 mSurfaceHolderCallback = 439 ((RootViewSurfaceTaker)view).willYouTakeTheSurface(); 440 if (mSurfaceHolderCallback != null) { 441 mSurfaceHolder = new TakenSurfaceHolder(); 442 mSurfaceHolder.setFormat(PixelFormat.UNKNOWN); 443 } 444 } 445 446 CompatibilityInfo compatibilityInfo = mCompatibilityInfo.get(); 447 mTranslator = compatibilityInfo.getTranslator(); 448 449 // If the application owns the surface, don't enable hardware acceleration 450 if (mSurfaceHolder == null) { 451 enableHardwareAcceleration(attrs); 452 } 453 454 boolean restore = false; 455 if (mTranslator != null) { 456 mSurface.setCompatibilityTranslator(mTranslator); 457 restore = true; 458 attrs.backup(); 459 mTranslator.translateWindowLayout(attrs); 460 } 461 if (DEBUG_LAYOUT) Log.d(TAG, "WindowLayout in setView:" + attrs); 462 463 if (!compatibilityInfo.supportsScreen()) { 464 attrs.flags |= WindowManager.LayoutParams.FLAG_COMPATIBLE_WINDOW; 465 mLastInCompatMode = true; 466 } 467 468 mSoftInputMode = attrs.softInputMode; 469 mWindowAttributesChanged = true; 470 mWindowAttributesChangesFlag = WindowManager.LayoutParams.EVERYTHING_CHANGED; 471 mAttachInfo.mRootView = view; 472 mAttachInfo.mScalingRequired = mTranslator != null; 473 mAttachInfo.mApplicationScale = 474 mTranslator == null ? 1.0f : mTranslator.applicationScale; 475 if (panelParentView != null) { 476 mAttachInfo.mPanelParentWindowToken 477 = panelParentView.getApplicationWindowToken(); 478 } 479 mAdded = true; 480 Slog.d(TAG, "setView: b9406261 setting mAdded=true mView=" + mView 481 + " Callers=" + Debug.getCallers(4)); 482 int res; /* = WindowManagerImpl.ADD_OKAY; */ 483 484 // Schedule the first layout -before- adding to the window 485 // manager, to make sure we do the relayout before receiving 486 // any other events from the system. 487 requestLayout(); 488 if ((mWindowAttributes.inputFeatures 489 & WindowManager.LayoutParams.INPUT_FEATURE_NO_INPUT_CHANNEL) == 0) { 490 mInputChannel = new InputChannel(); 491 } 492 try { 493 mOrigWindowType = mWindowAttributes.type; 494 mAttachInfo.mRecomputeGlobalAttributes = true; 495 collectViewAttributes(); 496 res = mWindowSession.addToDisplay(mWindow, mSeq, mWindowAttributes, 497 getHostVisibility(), mDisplay.getDisplayId(), 498 mAttachInfo.mContentInsets, mInputChannel); 499 } catch (RemoteException e) { 500 mAdded = false; 501 mView = null; 502 mAttachInfo.mRootView = null; 503 mInputChannel = null; 504 mFallbackEventHandler.setView(null); 505 unscheduleTraversals(); 506 setAccessibilityFocus(null, null); 507 Slog.d(TAG, "setView: b9406261 threw exception e=" + e 508 + " Callers=" + Debug.getCallers(4)); 509 throw new RuntimeException("Adding window failed", e); 510 } finally { 511 if (restore) { 512 attrs.restore(); 513 } 514 } 515 516 if (mTranslator != null) { 517 mTranslator.translateRectInScreenToAppWindow(mAttachInfo.mContentInsets); 518 } 519 mPendingOverscanInsets.set(0, 0, 0, 0); 520 mPendingContentInsets.set(mAttachInfo.mContentInsets); 521 mPendingVisibleInsets.set(0, 0, 0, 0); 522 if (DEBUG_LAYOUT) Log.v(TAG, "Added window " + mWindow); 523 if (res < WindowManagerGlobal.ADD_OKAY) { 524 mAttachInfo.mRootView = null; 525 mAdded = false; 526 mFallbackEventHandler.setView(null); 527 unscheduleTraversals(); 528 setAccessibilityFocus(null, null); 529 switch (res) { 530 case WindowManagerGlobal.ADD_BAD_APP_TOKEN: 531 case WindowManagerGlobal.ADD_BAD_SUBWINDOW_TOKEN: 532 throw new WindowManager.BadTokenException( 533 "Unable to add window -- token " + attrs.token 534 + " is not valid; is your activity running?"); 535 case WindowManagerGlobal.ADD_NOT_APP_TOKEN: 536 throw new WindowManager.BadTokenException( 537 "Unable to add window -- token " + attrs.token 538 + " is not for an application"); 539 case WindowManagerGlobal.ADD_APP_EXITING: 540 throw new WindowManager.BadTokenException( 541 "Unable to add window -- app for token " + attrs.token 542 + " is exiting"); 543 case WindowManagerGlobal.ADD_DUPLICATE_ADD: 544 throw new WindowManager.BadTokenException( 545 "Unable to add window -- window " + mWindow 546 + " has already been added"); 547 case WindowManagerGlobal.ADD_STARTING_NOT_NEEDED: 548 // Silently ignore -- we would have just removed it 549 // right away, anyway. 550 return; 551 case WindowManagerGlobal.ADD_MULTIPLE_SINGLETON: 552 throw new WindowManager.BadTokenException( 553 "Unable to add window " + mWindow + 554 " -- another window of this type already exists"); 555 case WindowManagerGlobal.ADD_PERMISSION_DENIED: 556 throw new WindowManager.BadTokenException( 557 "Unable to add window " + mWindow + 558 " -- permission denied for this window type"); 559 case WindowManagerGlobal.ADD_INVALID_DISPLAY: 560 throw new WindowManager.InvalidDisplayException( 561 "Unable to add window " + mWindow + 562 " -- the specified display can not be found"); 563 } 564 throw new RuntimeException( 565 "Unable to add window -- unknown error code " + res); 566 } 567 568 if (view instanceof RootViewSurfaceTaker) { 569 mInputQueueCallback = 570 ((RootViewSurfaceTaker)view).willYouTakeTheInputQueue(); 571 } 572 if (mInputChannel != null) { 573 if (mInputQueueCallback != null) { 574 mInputQueue = new InputQueue(); 575 mInputQueueCallback.onInputQueueCreated(mInputQueue); 576 } 577 mInputEventReceiver = new WindowInputEventReceiver(mInputChannel, 578 Looper.myLooper()); 579 } 580 581 view.assignParent(this); 582 mAddedTouchMode = (res & WindowManagerGlobal.ADD_FLAG_IN_TOUCH_MODE) != 0; 583 mAppVisible = (res & WindowManagerGlobal.ADD_FLAG_APP_VISIBLE) != 0; 584 585 if (mAccessibilityManager.isEnabled()) { 586 mAccessibilityInteractionConnectionManager.ensureConnection(); 587 } 588 589 if (view.getImportantForAccessibility() == View.IMPORTANT_FOR_ACCESSIBILITY_AUTO) { 590 view.setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_YES); 591 } 592 593 // Set up the input pipeline. 594 CharSequence counterSuffix = attrs.getTitle(); 595 InputStage syntheticStage = new SyntheticInputStage(); 596 InputStage viewPostImeStage = new ViewPostImeInputStage(syntheticStage); 597 InputStage nativePostImeStage = new NativePostImeInputStage(viewPostImeStage, 598 "aq:native-post-ime:" + counterSuffix); 599 InputStage earlyPostImeStage = new EarlyPostImeInputStage(nativePostImeStage); 600 InputStage imeStage = new ImeInputStage(earlyPostImeStage, 601 "aq:ime:" + counterSuffix); 602 InputStage viewPreImeStage = new ViewPreImeInputStage(imeStage); 603 InputStage nativePreImeStage = new NativePreImeInputStage(viewPreImeStage, 604 "aq:native-pre-ime:" + counterSuffix); 605 606 mFirstInputStage = nativePreImeStage; 607 mFirstPostImeInputStage = earlyPostImeStage; 608 mPendingInputEventQueueLengthCounterName = "aq:pending:" + counterSuffix; 609 } 610 } 611 } 612 613 void destroyHardwareResources() { 614 if (mAttachInfo.mHardwareRenderer != null) { 615 if (mAttachInfo.mHardwareRenderer.isEnabled()) { 616 mAttachInfo.mHardwareRenderer.destroyLayers(mView); 617 } 618 mAttachInfo.mHardwareRenderer.destroy(false); 619 } 620 } 621 622 void terminateHardwareResources() { 623 if (mAttachInfo.mHardwareRenderer != null) { 624 mAttachInfo.mHardwareRenderer.destroyHardwareResources(mView); 625 mAttachInfo.mHardwareRenderer.destroy(false); 626 } 627 } 628 629 void destroyHardwareLayers() { 630 if (mThread != Thread.currentThread()) { 631 if (mAttachInfo.mHardwareRenderer != null && 632 mAttachInfo.mHardwareRenderer.isEnabled()) { 633 HardwareRenderer.trimMemory(ComponentCallbacks2.TRIM_MEMORY_MODERATE); 634 } 635 } else { 636 if (mAttachInfo.mHardwareRenderer != null && 637 mAttachInfo.mHardwareRenderer.isEnabled()) { 638 mAttachInfo.mHardwareRenderer.destroyLayers(mView); 639 } 640 } 641 } 642 643 void pushHardwareLayerUpdate(HardwareLayer layer) { 644 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled()) { 645 mAttachInfo.mHardwareRenderer.pushLayerUpdate(layer); 646 } 647 } 648 649 void flushHardwareLayerUpdates() { 650 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled() && 651 mAttachInfo.mHardwareRenderer.validate()) { 652 mAttachInfo.mHardwareRenderer.flushLayerUpdates(); 653 } 654 } 655 656 void dispatchFlushHardwareLayerUpdates() { 657 mHandler.removeMessages(MSG_FLUSH_LAYER_UPDATES); 658 mHandler.sendMessageAtFrontOfQueue(mHandler.obtainMessage(MSG_FLUSH_LAYER_UPDATES)); 659 } 660 661 public boolean attachFunctor(int functor) { 662 //noinspection SimplifiableIfStatement 663 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled()) { 664 return mAttachInfo.mHardwareRenderer.attachFunctor(mAttachInfo, functor); 665 } 666 return false; 667 } 668 669 public void detachFunctor(int functor) { 670 if (mAttachInfo.mHardwareRenderer != null) { 671 mAttachInfo.mHardwareRenderer.detachFunctor(functor); 672 } 673 } 674 675 private void enableHardwareAcceleration(WindowManager.LayoutParams attrs) { 676 mAttachInfo.mHardwareAccelerated = false; 677 mAttachInfo.mHardwareAccelerationRequested = false; 678 679 // Don't enable hardware acceleration when the application is in compatibility mode 680 if (mTranslator != null) return; 681 682 // Try to enable hardware acceleration if requested 683 final boolean hardwareAccelerated = 684 (attrs.flags & WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED) != 0; 685 686 if (hardwareAccelerated) { 687 if (!HardwareRenderer.isAvailable()) { 688 return; 689 } 690 691 // Persistent processes (including the system) should not do 692 // accelerated rendering on low-end devices. In that case, 693 // sRendererDisabled will be set. In addition, the system process 694 // itself should never do accelerated rendering. In that case, both 695 // sRendererDisabled and sSystemRendererDisabled are set. When 696 // sSystemRendererDisabled is set, PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED 697 // can be used by code on the system process to escape that and enable 698 // HW accelerated drawing. (This is basically for the lock screen.) 699 700 final boolean fakeHwAccelerated = (attrs.privateFlags & 701 WindowManager.LayoutParams.PRIVATE_FLAG_FAKE_HARDWARE_ACCELERATED) != 0; 702 final boolean forceHwAccelerated = (attrs.privateFlags & 703 WindowManager.LayoutParams.PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED) != 0; 704 705 if (!HardwareRenderer.sRendererDisabled || (HardwareRenderer.sSystemRendererDisabled 706 && forceHwAccelerated)) { 707 // Don't enable hardware acceleration when we're not on the main thread 708 if (!HardwareRenderer.sSystemRendererDisabled && 709 Looper.getMainLooper() != Looper.myLooper()) { 710 Log.w(HardwareRenderer.LOG_TAG, "Attempting to initialize hardware " 711 + "acceleration outside of the main thread, aborting"); 712 return; 713 } 714 715 if (mAttachInfo.mHardwareRenderer != null) { 716 mAttachInfo.mHardwareRenderer.destroy(true); 717 } 718 719 final boolean translucent = attrs.format != PixelFormat.OPAQUE; 720 mAttachInfo.mHardwareRenderer = HardwareRenderer.createGlRenderer(2, translucent); 721 if (mAttachInfo.mHardwareRenderer != null) { 722 mAttachInfo.mHardwareRenderer.setName(attrs.getTitle().toString()); 723 mAttachInfo.mHardwareAccelerated = 724 mAttachInfo.mHardwareAccelerationRequested = true; 725 } 726 } else if (fakeHwAccelerated) { 727 // The window had wanted to use hardware acceleration, but this 728 // is not allowed in its process. By setting this flag, it can 729 // still render as if it was accelerated. This is basically for 730 // the preview windows the window manager shows for launching 731 // applications, so they will look more like the app being launched. 732 mAttachInfo.mHardwareAccelerationRequested = true; 733 } 734 } 735 } 736 737 public View getView() { 738 return mView; 739 } 740 741 final WindowLeaked getLocation() { 742 return mLocation; 743 } 744 745 void setLayoutParams(WindowManager.LayoutParams attrs, boolean newView) { 746 synchronized (this) { 747 int oldSoftInputMode = mWindowAttributes.softInputMode; 748 // Keep track of the actual window flags supplied by the client. 749 mClientWindowLayoutFlags = attrs.flags; 750 // preserve compatible window flag if exists. 751 int compatibleWindowFlag = 752 mWindowAttributes.flags & WindowManager.LayoutParams.FLAG_COMPATIBLE_WINDOW; 753 // transfer over system UI visibility values as they carry current state. 754 attrs.systemUiVisibility = mWindowAttributes.systemUiVisibility; 755 attrs.subtreeSystemUiVisibility = mWindowAttributes.subtreeSystemUiVisibility; 756 mWindowAttributesChangesFlag = mWindowAttributes.copyFrom(attrs); 757 if (mWindowAttributes.packageName == null) { 758 mWindowAttributes.packageName = mBasePackageName; 759 } 760 mWindowAttributes.flags |= compatibleWindowFlag; 761 762 applyKeepScreenOnFlag(mWindowAttributes); 763 764 if (newView) { 765 mSoftInputMode = attrs.softInputMode; 766 requestLayout(); 767 } 768 // Don't lose the mode we last auto-computed. 769 if ((attrs.softInputMode&WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 770 == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 771 mWindowAttributes.softInputMode = (mWindowAttributes.softInputMode 772 & ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 773 | (oldSoftInputMode 774 & WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST); 775 } 776 mWindowAttributesChanged = true; 777 scheduleTraversals(); 778 } 779 } 780 781 void handleAppVisibility(boolean visible) { 782 if (mAppVisible != visible) { 783 mAppVisible = visible; 784 scheduleTraversals(); 785 } 786 } 787 788 void handleGetNewSurface() { 789 mNewSurfaceNeeded = true; 790 mFullRedrawNeeded = true; 791 scheduleTraversals(); 792 } 793 794 void handleScreenStateChange(boolean on) { 795 if (on != mAttachInfo.mScreenOn) { 796 mAttachInfo.mScreenOn = on; 797 if (mView != null) { 798 mView.dispatchScreenStateChanged(on ? View.SCREEN_STATE_ON : View.SCREEN_STATE_OFF); 799 } 800 if (on) { 801 mFullRedrawNeeded = true; 802 scheduleTraversals(); 803 } 804 } 805 } 806 807 @Override 808 public void requestFitSystemWindows() { 809 checkThread(); 810 mFitSystemWindowsRequested = true; 811 scheduleTraversals(); 812 } 813 814 @Override 815 public void requestLayout() { 816 if (!mHandlingLayoutInLayoutRequest) { 817 checkThread(); 818 mLayoutRequested = true; 819 scheduleTraversals(); 820 } 821 } 822 823 @Override 824 public boolean isLayoutRequested() { 825 return mLayoutRequested; 826 } 827 828 void invalidate() { 829 mDirty.set(0, 0, mWidth, mHeight); 830 scheduleTraversals(); 831 } 832 833 void invalidateWorld(View view) { 834 view.invalidate(); 835 if (view instanceof ViewGroup) { 836 ViewGroup parent = (ViewGroup) view; 837 for (int i = 0; i < parent.getChildCount(); i++) { 838 invalidateWorld(parent.getChildAt(i)); 839 } 840 } 841 } 842 843 @Override 844 public void invalidateChild(View child, Rect dirty) { 845 invalidateChildInParent(null, dirty); 846 } 847 848 public ViewParent invalidateChildInParent(int[] location, Rect dirty) { 849 checkThread(); 850 if (DEBUG_DRAW) Log.v(TAG, "Invalidate child: " + dirty); 851 852 if (dirty == null) { 853 invalidate(); 854 return null; 855 } else if (dirty.isEmpty() && !mIsAnimating) { 856 return null; 857 } 858 859 if (mCurScrollY != 0 || mTranslator != null) { 860 mTempRect.set(dirty); 861 dirty = mTempRect; 862 if (mCurScrollY != 0) { 863 dirty.offset(0, -mCurScrollY); 864 } 865 if (mTranslator != null) { 866 mTranslator.translateRectInAppWindowToScreen(dirty); 867 } 868 if (mAttachInfo.mScalingRequired) { 869 dirty.inset(-1, -1); 870 } 871 } 872 873 final Rect localDirty = mDirty; 874 if (!localDirty.isEmpty() && !localDirty.contains(dirty)) { 875 mAttachInfo.mSetIgnoreDirtyState = true; 876 mAttachInfo.mIgnoreDirtyState = true; 877 } 878 879 // Add the new dirty rect to the current one 880 localDirty.union(dirty.left, dirty.top, dirty.right, dirty.bottom); 881 // Intersect with the bounds of the window to skip 882 // updates that lie outside of the visible region 883 final float appScale = mAttachInfo.mApplicationScale; 884 final boolean intersected = localDirty.intersect(0, 0, 885 (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 886 if (!intersected) { 887 localDirty.setEmpty(); 888 } 889 if (!mWillDrawSoon && (intersected || mIsAnimating)) { 890 scheduleTraversals(); 891 } 892 893 return null; 894 } 895 896 void setStopped(boolean stopped) { 897 if (mStopped != stopped) { 898 mStopped = stopped; 899 if (!stopped) { 900 scheduleTraversals(); 901 } 902 } 903 } 904 905 public ViewParent getParent() { 906 return null; 907 } 908 909 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 if (mView != null) { 2809 mView.assignParent(null); 2810 } 2811 mView = null; 2812 mAttachInfo.mRootView = null; 2813 mAttachInfo.mSurface = null; 2814 2815 mSurface.release(); 2816 2817 if (mInputQueueCallback != null && mInputQueue != null) { 2818 mInputQueueCallback.onInputQueueDestroyed(mInputQueue); 2819 mInputQueue.dispose(); 2820 mInputQueueCallback = null; 2821 mInputQueue = null; 2822 } 2823 if (mInputEventReceiver != null) { 2824 mInputEventReceiver.dispose(); 2825 mInputEventReceiver = null; 2826 } 2827 try { 2828 mWindowSession.remove(mWindow); 2829 } catch (RemoteException e) { 2830 } 2831 2832 // Dispose the input channel after removing the window so the Window Manager 2833 // doesn't interpret the input channel being closed as an abnormal termination. 2834 if (mInputChannel != null) { 2835 mInputChannel.dispose(); 2836 mInputChannel = null; 2837 } 2838 2839 unscheduleTraversals(); 2840 } 2841 2842 void updateConfiguration(Configuration config, boolean force) { 2843 if (DEBUG_CONFIGURATION) Log.v(TAG, 2844 "Applying new config to window " 2845 + mWindowAttributes.getTitle() 2846 + ": " + config); 2847 2848 CompatibilityInfo ci = mCompatibilityInfo.getIfNeeded(); 2849 if (ci != null) { 2850 config = new Configuration(config); 2851 ci.applyToConfiguration(mNoncompatDensity, config); 2852 } 2853 2854 synchronized (sConfigCallbacks) { 2855 for (int i=sConfigCallbacks.size()-1; i>=0; i--) { 2856 sConfigCallbacks.get(i).onConfigurationChanged(config); 2857 } 2858 } 2859 if (mView != null) { 2860 // At this point the resources have been updated to 2861 // have the most recent config, whatever that is. Use 2862 // the one in them which may be newer. 2863 config = mView.getResources().getConfiguration(); 2864 if (force || mLastConfiguration.diff(config) != 0) { 2865 final int lastLayoutDirection = mLastConfiguration.getLayoutDirection(); 2866 final int currentLayoutDirection = config.getLayoutDirection(); 2867 mLastConfiguration.setTo(config); 2868 if (lastLayoutDirection != currentLayoutDirection && 2869 mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 2870 mView.setLayoutDirection(currentLayoutDirection); 2871 } 2872 mView.dispatchConfigurationChanged(config); 2873 } 2874 } 2875 } 2876 2877 /** 2878 * Return true if child is an ancestor of parent, (or equal to the parent). 2879 */ 2880 public static boolean isViewDescendantOf(View child, View parent) { 2881 if (child == parent) { 2882 return true; 2883 } 2884 2885 final ViewParent theParent = child.getParent(); 2886 return (theParent instanceof ViewGroup) && isViewDescendantOf((View) theParent, parent); 2887 } 2888 2889 private static void forceLayout(View view) { 2890 view.forceLayout(); 2891 if (view instanceof ViewGroup) { 2892 ViewGroup group = (ViewGroup) view; 2893 final int count = group.getChildCount(); 2894 for (int i = 0; i < count; i++) { 2895 forceLayout(group.getChildAt(i)); 2896 } 2897 } 2898 } 2899 2900 private final static int MSG_INVALIDATE = 1; 2901 private final static int MSG_INVALIDATE_RECT = 2; 2902 private final static int MSG_DIE = 3; 2903 private final static int MSG_RESIZED = 4; 2904 private final static int MSG_RESIZED_REPORT = 5; 2905 private final static int MSG_WINDOW_FOCUS_CHANGED = 6; 2906 private final static int MSG_DISPATCH_KEY = 7; 2907 private final static int MSG_DISPATCH_APP_VISIBILITY = 8; 2908 private final static int MSG_DISPATCH_GET_NEW_SURFACE = 9; 2909 private final static int MSG_DISPATCH_KEY_FROM_IME = 11; 2910 private final static int MSG_FINISH_INPUT_CONNECTION = 12; 2911 private final static int MSG_CHECK_FOCUS = 13; 2912 private final static int MSG_CLOSE_SYSTEM_DIALOGS = 14; 2913 private final static int MSG_DISPATCH_DRAG_EVENT = 15; 2914 private final static int MSG_DISPATCH_DRAG_LOCATION_EVENT = 16; 2915 private final static int MSG_DISPATCH_SYSTEM_UI_VISIBILITY = 17; 2916 private final static int MSG_UPDATE_CONFIGURATION = 18; 2917 private final static int MSG_PROCESS_INPUT_EVENTS = 19; 2918 private final static int MSG_DISPATCH_SCREEN_STATE = 20; 2919 private final static int MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST = 21; 2920 private final static int MSG_DISPATCH_DONE_ANIMATING = 22; 2921 private final static int MSG_INVALIDATE_WORLD = 23; 2922 private final static int MSG_WINDOW_MOVED = 24; 2923 private final static int MSG_FLUSH_LAYER_UPDATES = 25; 2924 2925 final class ViewRootHandler extends Handler { 2926 @Override 2927 public String getMessageName(Message message) { 2928 switch (message.what) { 2929 case MSG_INVALIDATE: 2930 return "MSG_INVALIDATE"; 2931 case MSG_INVALIDATE_RECT: 2932 return "MSG_INVALIDATE_RECT"; 2933 case MSG_DIE: 2934 return "MSG_DIE"; 2935 case MSG_RESIZED: 2936 return "MSG_RESIZED"; 2937 case MSG_RESIZED_REPORT: 2938 return "MSG_RESIZED_REPORT"; 2939 case MSG_WINDOW_FOCUS_CHANGED: 2940 return "MSG_WINDOW_FOCUS_CHANGED"; 2941 case MSG_DISPATCH_KEY: 2942 return "MSG_DISPATCH_KEY"; 2943 case MSG_DISPATCH_APP_VISIBILITY: 2944 return "MSG_DISPATCH_APP_VISIBILITY"; 2945 case MSG_DISPATCH_GET_NEW_SURFACE: 2946 return "MSG_DISPATCH_GET_NEW_SURFACE"; 2947 case MSG_DISPATCH_KEY_FROM_IME: 2948 return "MSG_DISPATCH_KEY_FROM_IME"; 2949 case MSG_FINISH_INPUT_CONNECTION: 2950 return "MSG_FINISH_INPUT_CONNECTION"; 2951 case MSG_CHECK_FOCUS: 2952 return "MSG_CHECK_FOCUS"; 2953 case MSG_CLOSE_SYSTEM_DIALOGS: 2954 return "MSG_CLOSE_SYSTEM_DIALOGS"; 2955 case MSG_DISPATCH_DRAG_EVENT: 2956 return "MSG_DISPATCH_DRAG_EVENT"; 2957 case MSG_DISPATCH_DRAG_LOCATION_EVENT: 2958 return "MSG_DISPATCH_DRAG_LOCATION_EVENT"; 2959 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: 2960 return "MSG_DISPATCH_SYSTEM_UI_VISIBILITY"; 2961 case MSG_UPDATE_CONFIGURATION: 2962 return "MSG_UPDATE_CONFIGURATION"; 2963 case MSG_PROCESS_INPUT_EVENTS: 2964 return "MSG_PROCESS_INPUT_EVENTS"; 2965 case MSG_DISPATCH_SCREEN_STATE: 2966 return "MSG_DISPATCH_SCREEN_STATE"; 2967 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: 2968 return "MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST"; 2969 case MSG_DISPATCH_DONE_ANIMATING: 2970 return "MSG_DISPATCH_DONE_ANIMATING"; 2971 case MSG_WINDOW_MOVED: 2972 return "MSG_WINDOW_MOVED"; 2973 case MSG_FLUSH_LAYER_UPDATES: 2974 return "MSG_FLUSH_LAYER_UPDATES"; 2975 } 2976 return super.getMessageName(message); 2977 } 2978 2979 @Override 2980 public void handleMessage(Message msg) { 2981 switch (msg.what) { 2982 case MSG_INVALIDATE: 2983 ((View) msg.obj).invalidate(); 2984 break; 2985 case MSG_INVALIDATE_RECT: 2986 final View.AttachInfo.InvalidateInfo info = (View.AttachInfo.InvalidateInfo) msg.obj; 2987 info.target.invalidate(info.left, info.top, info.right, info.bottom); 2988 info.recycle(); 2989 break; 2990 case MSG_PROCESS_INPUT_EVENTS: 2991 mProcessInputEventsScheduled = false; 2992 doProcessInputEvents(); 2993 break; 2994 case MSG_DISPATCH_APP_VISIBILITY: 2995 handleAppVisibility(msg.arg1 != 0); 2996 break; 2997 case MSG_DISPATCH_GET_NEW_SURFACE: 2998 handleGetNewSurface(); 2999 break; 3000 case MSG_RESIZED: { 3001 // Recycled in the fall through... 3002 SomeArgs args = (SomeArgs) msg.obj; 3003 if (mWinFrame.equals(args.arg1) 3004 && mPendingOverscanInsets.equals(args.arg5) 3005 && mPendingContentInsets.equals(args.arg2) 3006 && mPendingVisibleInsets.equals(args.arg3) 3007 && args.arg4 == null) { 3008 break; 3009 } 3010 } // fall through... 3011 case MSG_RESIZED_REPORT: 3012 if (mAdded) { 3013 SomeArgs args = (SomeArgs) msg.obj; 3014 3015 Configuration config = (Configuration) args.arg4; 3016 if (config != null) { 3017 updateConfiguration(config, false); 3018 } 3019 3020 mWinFrame.set((Rect) args.arg1); 3021 mPendingOverscanInsets.set((Rect) args.arg5); 3022 mPendingContentInsets.set((Rect) args.arg2); 3023 mPendingVisibleInsets.set((Rect) args.arg3); 3024 3025 args.recycle(); 3026 3027 if (msg.what == MSG_RESIZED_REPORT) { 3028 mReportNextDraw = true; 3029 } 3030 3031 if (mView != null) { 3032 forceLayout(mView); 3033 } 3034 3035 requestLayout(); 3036 } 3037 break; 3038 case MSG_WINDOW_MOVED: 3039 if (mAdded) { 3040 final int w = mWinFrame.width(); 3041 final int h = mWinFrame.height(); 3042 final int l = msg.arg1; 3043 final int t = msg.arg2; 3044 mWinFrame.left = l; 3045 mWinFrame.right = l + w; 3046 mWinFrame.top = t; 3047 mWinFrame.bottom = t + h; 3048 3049 if (mView != null) { 3050 forceLayout(mView); 3051 } 3052 requestLayout(); 3053 } 3054 break; 3055 case MSG_WINDOW_FOCUS_CHANGED: { 3056 if (mAdded) { 3057 boolean hasWindowFocus = msg.arg1 != 0; 3058 mAttachInfo.mHasWindowFocus = hasWindowFocus; 3059 3060 profileRendering(hasWindowFocus); 3061 3062 if (hasWindowFocus) { 3063 boolean inTouchMode = msg.arg2 != 0; 3064 ensureTouchModeLocally(inTouchMode); 3065 3066 if (mAttachInfo.mHardwareRenderer != null && mSurface.isValid()){ 3067 mFullRedrawNeeded = true; 3068 try { 3069 mAttachInfo.mHardwareRenderer.initializeIfNeeded( 3070 mWidth, mHeight, mHolder.getSurface()); 3071 } catch (Surface.OutOfResourcesException e) { 3072 Log.e(TAG, "OutOfResourcesException locking surface", e); 3073 try { 3074 if (!mWindowSession.outOfMemory(mWindow)) { 3075 Slog.w(TAG, "No processes killed for memory; killing self"); 3076 Process.killProcess(Process.myPid()); 3077 } 3078 } catch (RemoteException ex) { 3079 } 3080 // Retry in a bit. 3081 sendMessageDelayed(obtainMessage(msg.what, msg.arg1, msg.arg2), 500); 3082 return; 3083 } 3084 } 3085 } 3086 3087 mLastWasImTarget = WindowManager.LayoutParams 3088 .mayUseInputMethod(mWindowAttributes.flags); 3089 3090 InputMethodManager imm = InputMethodManager.peekInstance(); 3091 if (mView != null) { 3092 if (hasWindowFocus && imm != null && mLastWasImTarget) { 3093 imm.startGettingWindowFocus(mView); 3094 } 3095 mAttachInfo.mKeyDispatchState.reset(); 3096 mView.dispatchWindowFocusChanged(hasWindowFocus); 3097 mAttachInfo.mTreeObserver.dispatchOnWindowFocusChange(hasWindowFocus); 3098 } 3099 3100 // Note: must be done after the focus change callbacks, 3101 // so all of the view state is set up correctly. 3102 if (hasWindowFocus) { 3103 if (imm != null && mLastWasImTarget) { 3104 imm.onWindowFocus(mView, mView.findFocus(), 3105 mWindowAttributes.softInputMode, 3106 !mHasHadWindowFocus, mWindowAttributes.flags); 3107 } 3108 // Clear the forward bit. We can just do this directly, since 3109 // the window manager doesn't care about it. 3110 mWindowAttributes.softInputMode &= 3111 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3112 ((WindowManager.LayoutParams)mView.getLayoutParams()) 3113 .softInputMode &= 3114 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3115 mHasHadWindowFocus = true; 3116 } 3117 3118 setAccessibilityFocus(null, null); 3119 3120 if (mView != null && mAccessibilityManager.isEnabled()) { 3121 if (hasWindowFocus) { 3122 mView.sendAccessibilityEvent( 3123 AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 3124 } 3125 } 3126 } 3127 } break; 3128 case MSG_DIE: 3129 doDie(); 3130 break; 3131 case MSG_DISPATCH_KEY: { 3132 KeyEvent event = (KeyEvent)msg.obj; 3133 enqueueInputEvent(event, null, 0, true); 3134 } break; 3135 case MSG_DISPATCH_KEY_FROM_IME: { 3136 if (LOCAL_LOGV) Log.v( 3137 TAG, "Dispatching key " 3138 + msg.obj + " from IME to " + mView); 3139 KeyEvent event = (KeyEvent)msg.obj; 3140 if ((event.getFlags()&KeyEvent.FLAG_FROM_SYSTEM) != 0) { 3141 // The IME is trying to say this event is from the 3142 // system! Bad bad bad! 3143 //noinspection UnusedAssignment 3144 event = KeyEvent.changeFlags(event, event.getFlags() & ~KeyEvent.FLAG_FROM_SYSTEM); 3145 } 3146 enqueueInputEvent(event, null, QueuedInputEvent.FLAG_DELIVER_POST_IME, true); 3147 } break; 3148 case MSG_FINISH_INPUT_CONNECTION: { 3149 InputMethodManager imm = InputMethodManager.peekInstance(); 3150 if (imm != null) { 3151 imm.reportFinishInputConnection((InputConnection)msg.obj); 3152 } 3153 } break; 3154 case MSG_CHECK_FOCUS: { 3155 InputMethodManager imm = InputMethodManager.peekInstance(); 3156 if (imm != null) { 3157 imm.checkFocus(); 3158 } 3159 } break; 3160 case MSG_CLOSE_SYSTEM_DIALOGS: { 3161 if (mView != null) { 3162 mView.onCloseSystemDialogs((String)msg.obj); 3163 } 3164 } break; 3165 case MSG_DISPATCH_DRAG_EVENT: 3166 case MSG_DISPATCH_DRAG_LOCATION_EVENT: { 3167 DragEvent event = (DragEvent)msg.obj; 3168 event.mLocalState = mLocalDragState; // only present when this app called startDrag() 3169 handleDragEvent(event); 3170 } break; 3171 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: { 3172 handleDispatchSystemUiVisibilityChanged((SystemUiVisibilityInfo) msg.obj); 3173 } break; 3174 case MSG_UPDATE_CONFIGURATION: { 3175 Configuration config = (Configuration)msg.obj; 3176 if (config.isOtherSeqNewer(mLastConfiguration)) { 3177 config = mLastConfiguration; 3178 } 3179 updateConfiguration(config, false); 3180 } break; 3181 case MSG_DISPATCH_SCREEN_STATE: { 3182 if (mView != null) { 3183 handleScreenStateChange(msg.arg1 == 1); 3184 } 3185 } break; 3186 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: { 3187 setAccessibilityFocus(null, null); 3188 } break; 3189 case MSG_DISPATCH_DONE_ANIMATING: { 3190 handleDispatchDoneAnimating(); 3191 } break; 3192 case MSG_INVALIDATE_WORLD: { 3193 if (mView != null) { 3194 invalidateWorld(mView); 3195 } 3196 } break; 3197 case MSG_FLUSH_LAYER_UPDATES: { 3198 flushHardwareLayerUpdates(); 3199 } break; 3200 } 3201 } 3202 } 3203 3204 final ViewRootHandler mHandler = new ViewRootHandler(); 3205 3206 /** 3207 * Something in the current window tells us we need to change the touch mode. For 3208 * example, we are not in touch mode, and the user touches the screen. 3209 * 3210 * If the touch mode has changed, tell the window manager, and handle it locally. 3211 * 3212 * @param inTouchMode Whether we want to be in touch mode. 3213 * @return True if the touch mode changed and focus changed was changed as a result 3214 */ 3215 boolean ensureTouchMode(boolean inTouchMode) { 3216 if (DBG) Log.d("touchmode", "ensureTouchMode(" + inTouchMode + "), current " 3217 + "touch mode is " + mAttachInfo.mInTouchMode); 3218 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3219 3220 // tell the window manager 3221 try { 3222 mWindowSession.setInTouchMode(inTouchMode); 3223 } catch (RemoteException e) { 3224 throw new RuntimeException(e); 3225 } 3226 3227 // handle the change 3228 return ensureTouchModeLocally(inTouchMode); 3229 } 3230 3231 /** 3232 * Ensure that the touch mode for this window is set, and if it is changing, 3233 * take the appropriate action. 3234 * @param inTouchMode Whether we want to be in touch mode. 3235 * @return True if the touch mode changed and focus changed was changed as a result 3236 */ 3237 private boolean ensureTouchModeLocally(boolean inTouchMode) { 3238 if (DBG) Log.d("touchmode", "ensureTouchModeLocally(" + inTouchMode + "), current " 3239 + "touch mode is " + mAttachInfo.mInTouchMode); 3240 3241 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3242 3243 mAttachInfo.mInTouchMode = inTouchMode; 3244 mAttachInfo.mTreeObserver.dispatchOnTouchModeChanged(inTouchMode); 3245 3246 return (inTouchMode) ? enterTouchMode() : leaveTouchMode(); 3247 } 3248 3249 private boolean enterTouchMode() { 3250 if (mView != null) { 3251 if (mView.hasFocus()) { 3252 // note: not relying on mFocusedView here because this could 3253 // be when the window is first being added, and mFocused isn't 3254 // set yet. 3255 final View focused = mView.findFocus(); 3256 if (focused != null && !focused.isFocusableInTouchMode()) { 3257 final ViewGroup ancestorToTakeFocus = 3258 findAncestorToTakeFocusInTouchMode(focused); 3259 if (ancestorToTakeFocus != null) { 3260 // there is an ancestor that wants focus after its descendants that 3261 // is focusable in touch mode.. give it focus 3262 return ancestorToTakeFocus.requestFocus(); 3263 } else { 3264 // nothing appropriate to have focus in touch mode, clear it out 3265 focused.unFocus(); 3266 return true; 3267 } 3268 } 3269 } 3270 } 3271 return false; 3272 } 3273 3274 /** 3275 * Find an ancestor of focused that wants focus after its descendants and is 3276 * focusable in touch mode. 3277 * @param focused The currently focused view. 3278 * @return An appropriate view, or null if no such view exists. 3279 */ 3280 private static ViewGroup findAncestorToTakeFocusInTouchMode(View focused) { 3281 ViewParent parent = focused.getParent(); 3282 while (parent instanceof ViewGroup) { 3283 final ViewGroup vgParent = (ViewGroup) parent; 3284 if (vgParent.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 3285 && vgParent.isFocusableInTouchMode()) { 3286 return vgParent; 3287 } 3288 if (vgParent.isRootNamespace()) { 3289 return null; 3290 } else { 3291 parent = vgParent.getParent(); 3292 } 3293 } 3294 return null; 3295 } 3296 3297 private boolean leaveTouchMode() { 3298 if (mView != null) { 3299 if (mView.hasFocus()) { 3300 View focusedView = mView.findFocus(); 3301 if (!(focusedView instanceof ViewGroup)) { 3302 // some view has focus, let it keep it 3303 return false; 3304 } else if (((ViewGroup) focusedView).getDescendantFocusability() != 3305 ViewGroup.FOCUS_AFTER_DESCENDANTS) { 3306 // some view group has focus, and doesn't prefer its children 3307 // over itself for focus, so let them keep it. 3308 return false; 3309 } 3310 } 3311 3312 // find the best view to give focus to in this brave new non-touch-mode 3313 // world 3314 final View focused = focusSearch(null, View.FOCUS_DOWN); 3315 if (focused != null) { 3316 return focused.requestFocus(View.FOCUS_DOWN); 3317 } 3318 } 3319 return false; 3320 } 3321 3322 /** 3323 * Base class for implementing a stage in the chain of responsibility 3324 * for processing input events. 3325 * <p> 3326 * Events are delivered to the stage by the {@link #deliver} method. The stage 3327 * then has the choice of finishing the event or forwarding it to the next stage. 3328 * </p> 3329 */ 3330 abstract class InputStage { 3331 private final InputStage mNext; 3332 3333 protected static final int FORWARD = 0; 3334 protected static final int FINISH_HANDLED = 1; 3335 protected static final int FINISH_NOT_HANDLED = 2; 3336 3337 /** 3338 * Creates an input stage. 3339 * @param next The next stage to which events should be forwarded. 3340 */ 3341 public InputStage(InputStage next) { 3342 mNext = next; 3343 } 3344 3345 /** 3346 * Delivers an event to be processed. 3347 */ 3348 public final void deliver(QueuedInputEvent q) { 3349 if ((q.mFlags & QueuedInputEvent.FLAG_FINISHED) != 0) { 3350 forward(q); 3351 } else if (mView == null || !mAdded) { 3352 Slog.w(TAG, "Dropping event due to root view being removed: " + q.mEvent); 3353 finish(q, false); 3354 } else if (!mAttachInfo.mHasWindowFocus && 3355 !q.mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER) && 3356 !isTerminalInputEvent(q.mEvent)) { 3357 // If this is a focused event and the window doesn't currently have input focus, 3358 // then drop this event. This could be an event that came back from the previous 3359 // stage but the window has lost focus in the meantime. 3360 Slog.w(TAG, "Dropping event due to no window focus: " + q.mEvent); 3361 finish(q, false); 3362 } else { 3363 apply(q, onProcess(q)); 3364 } 3365 } 3366 3367 /** 3368 * Marks the the input event as finished then forwards it to the next stage. 3369 */ 3370 protected void finish(QueuedInputEvent q, boolean handled) { 3371 q.mFlags |= QueuedInputEvent.FLAG_FINISHED; 3372 if (handled) { 3373 q.mFlags |= QueuedInputEvent.FLAG_FINISHED_HANDLED; 3374 } 3375 forward(q); 3376 } 3377 3378 /** 3379 * Forwards the event to the next stage. 3380 */ 3381 protected void forward(QueuedInputEvent q) { 3382 onDeliverToNext(q); 3383 } 3384 3385 /** 3386 * Applies a result code from {@link #onProcess} to the specified event. 3387 */ 3388 protected void apply(QueuedInputEvent q, int result) { 3389 if (result == FORWARD) { 3390 forward(q); 3391 } else if (result == FINISH_HANDLED) { 3392 finish(q, true); 3393 } else if (result == FINISH_NOT_HANDLED) { 3394 finish(q, false); 3395 } else { 3396 throw new IllegalArgumentException("Invalid result: " + result); 3397 } 3398 } 3399 3400 /** 3401 * Called when an event is ready to be processed. 3402 * @return A result code indicating how the event was handled. 3403 */ 3404 protected int onProcess(QueuedInputEvent q) { 3405 return FORWARD; 3406 } 3407 3408 /** 3409 * Called when an event is being delivered to the next stage. 3410 */ 3411 protected void onDeliverToNext(QueuedInputEvent q) { 3412 if (mNext != null) { 3413 mNext.deliver(q); 3414 } else { 3415 finishInputEvent(q); 3416 } 3417 } 3418 } 3419 3420 /** 3421 * Base class for implementing an input pipeline stage that supports 3422 * asynchronous and out-of-order processing of input events. 3423 * <p> 3424 * In addition to what a normal input stage can do, an asynchronous 3425 * input stage may also defer an input event that has been delivered to it 3426 * and finish or forward it later. 3427 * </p> 3428 */ 3429 abstract class AsyncInputStage extends InputStage { 3430 private final String mTraceCounter; 3431 3432 private QueuedInputEvent mQueueHead; 3433 private QueuedInputEvent mQueueTail; 3434 private int mQueueLength; 3435 3436 protected static final int DEFER = 3; 3437 3438 /** 3439 * Creates an asynchronous input stage. 3440 * @param next The next stage to which events should be forwarded. 3441 * @param traceCounter The name of a counter to record the size of 3442 * the queue of pending events. 3443 */ 3444 public AsyncInputStage(InputStage next, String traceCounter) { 3445 super(next); 3446 mTraceCounter = traceCounter; 3447 } 3448 3449 /** 3450 * Marks the event as deferred, which is to say that it will be handled 3451 * asynchronously. The caller is responsible for calling {@link #forward} 3452 * or {@link #finish} later when it is done handling the event. 3453 */ 3454 protected void defer(QueuedInputEvent q) { 3455 q.mFlags |= QueuedInputEvent.FLAG_DEFERRED; 3456 enqueue(q); 3457 } 3458 3459 @Override 3460 protected void forward(QueuedInputEvent q) { 3461 // Clear the deferred flag. 3462 q.mFlags &= ~QueuedInputEvent.FLAG_DEFERRED; 3463 3464 // Fast path if the queue is empty. 3465 QueuedInputEvent curr = mQueueHead; 3466 if (curr == null) { 3467 super.forward(q); 3468 return; 3469 } 3470 3471 // Determine whether the event must be serialized behind any others 3472 // before it can be delivered to the next stage. This is done because 3473 // deferred events might be handled out of order by the stage. 3474 final int deviceId = q.mEvent.getDeviceId(); 3475 QueuedInputEvent prev = null; 3476 boolean blocked = false; 3477 while (curr != null && curr != q) { 3478 if (!blocked && deviceId == curr.mEvent.getDeviceId()) { 3479 blocked = true; 3480 } 3481 prev = curr; 3482 curr = curr.mNext; 3483 } 3484 3485 // If the event is blocked, then leave it in the queue to be delivered later. 3486 // Note that the event might not yet be in the queue if it was not previously 3487 // deferred so we will enqueue it if needed. 3488 if (blocked) { 3489 if (curr == null) { 3490 enqueue(q); 3491 } 3492 return; 3493 } 3494 3495 // The event is not blocked. Deliver it immediately. 3496 if (curr != null) { 3497 curr = curr.mNext; 3498 dequeue(q, prev); 3499 } 3500 super.forward(q); 3501 3502 // Dequeuing this event may have unblocked successors. Deliver them. 3503 while (curr != null) { 3504 if (deviceId == curr.mEvent.getDeviceId()) { 3505 if ((curr.mFlags & QueuedInputEvent.FLAG_DEFERRED) != 0) { 3506 break; 3507 } 3508 QueuedInputEvent next = curr.mNext; 3509 dequeue(curr, prev); 3510 super.forward(curr); 3511 curr = next; 3512 } else { 3513 prev = curr; 3514 curr = curr.mNext; 3515 } 3516 } 3517 } 3518 3519 @Override 3520 protected void apply(QueuedInputEvent q, int result) { 3521 if (result == DEFER) { 3522 defer(q); 3523 } else { 3524 super.apply(q, result); 3525 } 3526 } 3527 3528 private void enqueue(QueuedInputEvent q) { 3529 if (mQueueTail == null) { 3530 mQueueHead = q; 3531 mQueueTail = q; 3532 } else { 3533 mQueueTail.mNext = q; 3534 mQueueTail = q; 3535 } 3536 3537 mQueueLength += 1; 3538 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 3539 } 3540 3541 private void dequeue(QueuedInputEvent q, QueuedInputEvent prev) { 3542 if (prev == null) { 3543 mQueueHead = q.mNext; 3544 } else { 3545 prev.mNext = q.mNext; 3546 } 3547 if (mQueueTail == q) { 3548 mQueueTail = prev; 3549 } 3550 q.mNext = null; 3551 3552 mQueueLength -= 1; 3553 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 3554 } 3555 } 3556 3557 /** 3558 * Delivers pre-ime input events to a native activity. 3559 * Does not support pointer events. 3560 */ 3561 final class NativePreImeInputStage extends AsyncInputStage 3562 implements InputQueue.FinishedInputEventCallback { 3563 public NativePreImeInputStage(InputStage next, String traceCounter) { 3564 super(next, traceCounter); 3565 } 3566 3567 @Override 3568 protected int onProcess(QueuedInputEvent q) { 3569 if (mInputQueue != null && q.mEvent instanceof KeyEvent) { 3570 mInputQueue.sendInputEvent(q.mEvent, q, true, this); 3571 return DEFER; 3572 } 3573 return FORWARD; 3574 } 3575 3576 @Override 3577 public void onFinishedInputEvent(Object token, boolean handled) { 3578 QueuedInputEvent q = (QueuedInputEvent)token; 3579 if (handled) { 3580 finish(q, true); 3581 return; 3582 } 3583 forward(q); 3584 } 3585 } 3586 3587 /** 3588 * Delivers pre-ime input events to the view hierarchy. 3589 * Does not support pointer events. 3590 */ 3591 final class ViewPreImeInputStage extends InputStage { 3592 public ViewPreImeInputStage(InputStage next) { 3593 super(next); 3594 } 3595 3596 @Override 3597 protected int onProcess(QueuedInputEvent q) { 3598 if (q.mEvent instanceof KeyEvent) { 3599 return processKeyEvent(q); 3600 } 3601 return FORWARD; 3602 } 3603 3604 private int processKeyEvent(QueuedInputEvent q) { 3605 final KeyEvent event = (KeyEvent)q.mEvent; 3606 if (mView.dispatchKeyEventPreIme(event)) { 3607 return FINISH_HANDLED; 3608 } 3609 return FORWARD; 3610 } 3611 } 3612 3613 /** 3614 * Delivers input events to the ime. 3615 * Does not support pointer events. 3616 */ 3617 final class ImeInputStage extends AsyncInputStage 3618 implements InputMethodManager.FinishedInputEventCallback { 3619 public ImeInputStage(InputStage next, String traceCounter) { 3620 super(next, traceCounter); 3621 } 3622 3623 @Override 3624 protected int onProcess(QueuedInputEvent q) { 3625 if (mLastWasImTarget) { 3626 InputMethodManager imm = InputMethodManager.peekInstance(); 3627 if (imm != null) { 3628 final InputEvent event = q.mEvent; 3629 if (DEBUG_IMF) Log.v(TAG, "Sending input event to IME: " + event); 3630 int result = imm.dispatchInputEvent(event, q, this, mHandler); 3631 if (result == InputMethodManager.DISPATCH_HANDLED) { 3632 return FINISH_HANDLED; 3633 } else if (result == InputMethodManager.DISPATCH_NOT_HANDLED) { 3634 return FINISH_NOT_HANDLED; 3635 } else { 3636 return DEFER; // callback will be invoked later 3637 } 3638 } 3639 } 3640 return FORWARD; 3641 } 3642 3643 @Override 3644 public void onFinishedInputEvent(Object token, boolean handled) { 3645 QueuedInputEvent q = (QueuedInputEvent)token; 3646 if (handled) { 3647 finish(q, true); 3648 return; 3649 } 3650 forward(q); 3651 } 3652 } 3653 3654 /** 3655 * Performs early processing of post-ime input events. 3656 */ 3657 final class EarlyPostImeInputStage extends InputStage { 3658 public EarlyPostImeInputStage(InputStage next) { 3659 super(next); 3660 } 3661 3662 @Override 3663 protected int onProcess(QueuedInputEvent q) { 3664 if (q.mEvent instanceof KeyEvent) { 3665 return processKeyEvent(q); 3666 } else { 3667 final int source = q.mEvent.getSource(); 3668 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 3669 return processPointerEvent(q); 3670 } 3671 } 3672 return FORWARD; 3673 } 3674 3675 private int processKeyEvent(QueuedInputEvent q) { 3676 final KeyEvent event = (KeyEvent)q.mEvent; 3677 3678 // If the key's purpose is to exit touch mode then we consume it 3679 // and consider it handled. 3680 if (checkForLeavingTouchModeAndConsume(event)) { 3681 return FINISH_HANDLED; 3682 } 3683 3684 // Make sure the fallback event policy sees all keys that will be 3685 // delivered to the view hierarchy. 3686 mFallbackEventHandler.preDispatchKeyEvent(event); 3687 return FORWARD; 3688 } 3689 3690 private int processPointerEvent(QueuedInputEvent q) { 3691 final MotionEvent event = (MotionEvent)q.mEvent; 3692 3693 // Translate the pointer event for compatibility, if needed. 3694 if (mTranslator != null) { 3695 mTranslator.translateEventInScreenToAppWindow(event); 3696 } 3697 3698 // Enter touch mode on down or scroll. 3699 final int action = event.getAction(); 3700 if (action == MotionEvent.ACTION_DOWN || action == MotionEvent.ACTION_SCROLL) { 3701 ensureTouchMode(true); 3702 } 3703 3704 // Offset the scroll position. 3705 if (mCurScrollY != 0) { 3706 event.offsetLocation(0, mCurScrollY); 3707 } 3708 3709 // Remember the touch position for possible drag-initiation. 3710 if (event.isTouchEvent()) { 3711 mLastTouchPoint.x = event.getRawX(); 3712 mLastTouchPoint.y = event.getRawY(); 3713 } 3714 return FORWARD; 3715 } 3716 } 3717 3718 /** 3719 * Delivers post-ime input events to a native activity. 3720 */ 3721 final class NativePostImeInputStage extends AsyncInputStage 3722 implements InputQueue.FinishedInputEventCallback { 3723 public NativePostImeInputStage(InputStage next, String traceCounter) { 3724 super(next, traceCounter); 3725 } 3726 3727 @Override 3728 protected int onProcess(QueuedInputEvent q) { 3729 if (mInputQueue != null) { 3730 mInputQueue.sendInputEvent(q.mEvent, q, false, this); 3731 return DEFER; 3732 } 3733 return FORWARD; 3734 } 3735 3736 @Override 3737 public void onFinishedInputEvent(Object token, boolean handled) { 3738 QueuedInputEvent q = (QueuedInputEvent)token; 3739 if (handled) { 3740 finish(q, true); 3741 return; 3742 } 3743 forward(q); 3744 } 3745 } 3746 3747 /** 3748 * Delivers post-ime input events to the view hierarchy. 3749 */ 3750 final class ViewPostImeInputStage extends InputStage { 3751 public ViewPostImeInputStage(InputStage next) { 3752 super(next); 3753 } 3754 3755 @Override 3756 protected int onProcess(QueuedInputEvent q) { 3757 if (q.mEvent instanceof KeyEvent) { 3758 return processKeyEvent(q); 3759 } else { 3760 final int source = q.mEvent.getSource(); 3761 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 3762 return processPointerEvent(q); 3763 } else if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 3764 return processTrackballEvent(q); 3765 } else { 3766 return processGenericMotionEvent(q); 3767 } 3768 } 3769 } 3770 3771 private int processKeyEvent(QueuedInputEvent q) { 3772 final KeyEvent event = (KeyEvent)q.mEvent; 3773 3774 // Deliver the key to the view hierarchy. 3775 if (mView.dispatchKeyEvent(event)) { 3776 return FINISH_HANDLED; 3777 } 3778 3779 // If the Control modifier is held, try to interpret the key as a shortcut. 3780 if (event.getAction() == KeyEvent.ACTION_DOWN 3781 && event.isCtrlPressed() 3782 && event.getRepeatCount() == 0 3783 && !KeyEvent.isModifierKey(event.getKeyCode())) { 3784 if (mView.dispatchKeyShortcutEvent(event)) { 3785 return FINISH_HANDLED; 3786 } 3787 } 3788 3789 // Apply the fallback event policy. 3790 if (mFallbackEventHandler.dispatchKeyEvent(event)) { 3791 return FINISH_HANDLED; 3792 } 3793 3794 // Handle automatic focus changes. 3795 if (event.getAction() == KeyEvent.ACTION_DOWN) { 3796 int direction = 0; 3797 switch (event.getKeyCode()) { 3798 case KeyEvent.KEYCODE_DPAD_LEFT: 3799 if (event.hasNoModifiers()) { 3800 direction = View.FOCUS_LEFT; 3801 } 3802 break; 3803 case KeyEvent.KEYCODE_DPAD_RIGHT: 3804 if (event.hasNoModifiers()) { 3805 direction = View.FOCUS_RIGHT; 3806 } 3807 break; 3808 case KeyEvent.KEYCODE_DPAD_UP: 3809 if (event.hasNoModifiers()) { 3810 direction = View.FOCUS_UP; 3811 } 3812 break; 3813 case KeyEvent.KEYCODE_DPAD_DOWN: 3814 if (event.hasNoModifiers()) { 3815 direction = View.FOCUS_DOWN; 3816 } 3817 break; 3818 case KeyEvent.KEYCODE_TAB: 3819 if (event.hasNoModifiers()) { 3820 direction = View.FOCUS_FORWARD; 3821 } else if (event.hasModifiers(KeyEvent.META_SHIFT_ON)) { 3822 direction = View.FOCUS_BACKWARD; 3823 } 3824 break; 3825 } 3826 if (direction != 0) { 3827 View focused = mView.findFocus(); 3828 if (focused != null) { 3829 View v = focused.focusSearch(direction); 3830 if (v != null && v != focused) { 3831 // do the math the get the interesting rect 3832 // of previous focused into the coord system of 3833 // newly focused view 3834 focused.getFocusedRect(mTempRect); 3835 if (mView instanceof ViewGroup) { 3836 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 3837 focused, mTempRect); 3838 ((ViewGroup) mView).offsetRectIntoDescendantCoords( 3839 v, mTempRect); 3840 } 3841 if (v.requestFocus(direction, mTempRect)) { 3842 playSoundEffect(SoundEffectConstants 3843 .getContantForFocusDirection(direction)); 3844 return FINISH_HANDLED; 3845 } 3846 } 3847 3848 // Give the focused view a last chance to handle the dpad key. 3849 if (mView.dispatchUnhandledMove(focused, direction)) { 3850 return FINISH_HANDLED; 3851 } 3852 } else { 3853 // find the best view to give focus to in this non-touch-mode with no-focus 3854 View v = focusSearch(null, direction); 3855 if (v != null && v.requestFocus(direction)) { 3856 return FINISH_HANDLED; 3857 } 3858 } 3859 } 3860 } 3861 return FORWARD; 3862 } 3863 3864 private int processPointerEvent(QueuedInputEvent q) { 3865 final MotionEvent event = (MotionEvent)q.mEvent; 3866 3867 if (mView.dispatchPointerEvent(event)) { 3868 return FINISH_HANDLED; 3869 } 3870 return FORWARD; 3871 } 3872 3873 private int processTrackballEvent(QueuedInputEvent q) { 3874 final MotionEvent event = (MotionEvent)q.mEvent; 3875 3876 if (mView.dispatchTrackballEvent(event)) { 3877 return FINISH_HANDLED; 3878 } 3879 return FORWARD; 3880 } 3881 3882 private int processGenericMotionEvent(QueuedInputEvent q) { 3883 final MotionEvent event = (MotionEvent)q.mEvent; 3884 3885 // Deliver the event to the view. 3886 if (mView.dispatchGenericMotionEvent(event)) { 3887 return FINISH_HANDLED; 3888 } 3889 return FORWARD; 3890 } 3891 } 3892 3893 /** 3894 * Performs synthesis of new input events from unhandled input events. 3895 */ 3896 final class SyntheticInputStage extends InputStage { 3897 private final SyntheticTrackballHandler mTrackball = new SyntheticTrackballHandler(); 3898 private final SyntheticJoystickHandler mJoystick = new SyntheticJoystickHandler(); 3899 private final SyntheticTouchNavigationHandler mTouchNavigation = 3900 new SyntheticTouchNavigationHandler(); 3901 3902 public SyntheticInputStage() { 3903 super(null); 3904 } 3905 3906 @Override 3907 protected int onProcess(QueuedInputEvent q) { 3908 q.mFlags |= QueuedInputEvent.FLAG_RESYNTHESIZED; 3909 if (q.mEvent instanceof MotionEvent) { 3910 final MotionEvent event = (MotionEvent)q.mEvent; 3911 final int source = event.getSource(); 3912 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 3913 mTrackball.process(event); 3914 return FINISH_HANDLED; 3915 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 3916 mJoystick.process(event); 3917 return FINISH_HANDLED; 3918 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 3919 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 3920 mTouchNavigation.process(event); 3921 return FINISH_HANDLED; 3922 } 3923 } 3924 return FORWARD; 3925 } 3926 3927 @Override 3928 protected void onDeliverToNext(QueuedInputEvent q) { 3929 if ((q.mFlags & QueuedInputEvent.FLAG_RESYNTHESIZED) == 0) { 3930 // Cancel related synthetic events if any prior stage has handled the event. 3931 if (q.mEvent instanceof MotionEvent) { 3932 final MotionEvent event = (MotionEvent)q.mEvent; 3933 final int source = event.getSource(); 3934 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 3935 mTrackball.cancel(event); 3936 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 3937 mJoystick.cancel(event); 3938 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 3939 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 3940 mTouchNavigation.cancel(event); 3941 } 3942 } 3943 } 3944 super.onDeliverToNext(q); 3945 } 3946 } 3947 3948 /** 3949 * Creates dpad events from unhandled trackball movements. 3950 */ 3951 final class SyntheticTrackballHandler { 3952 private final TrackballAxis mX = new TrackballAxis(); 3953 private final TrackballAxis mY = new TrackballAxis(); 3954 private long mLastTime; 3955 3956 public void process(MotionEvent event) { 3957 // Translate the trackball event into DPAD keys and try to deliver those. 3958 long curTime = SystemClock.uptimeMillis(); 3959 if ((mLastTime + MAX_TRACKBALL_DELAY) < curTime) { 3960 // It has been too long since the last movement, 3961 // so restart at the beginning. 3962 mX.reset(0); 3963 mY.reset(0); 3964 mLastTime = curTime; 3965 } 3966 3967 final int action = event.getAction(); 3968 final int metaState = event.getMetaState(); 3969 switch (action) { 3970 case MotionEvent.ACTION_DOWN: 3971 mX.reset(2); 3972 mY.reset(2); 3973 enqueueInputEvent(new KeyEvent(curTime, curTime, 3974 KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 3975 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 3976 InputDevice.SOURCE_KEYBOARD)); 3977 break; 3978 case MotionEvent.ACTION_UP: 3979 mX.reset(2); 3980 mY.reset(2); 3981 enqueueInputEvent(new KeyEvent(curTime, curTime, 3982 KeyEvent.ACTION_UP, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 3983 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 3984 InputDevice.SOURCE_KEYBOARD)); 3985 break; 3986 } 3987 3988 if (DEBUG_TRACKBALL) Log.v(TAG, "TB X=" + mX.position + " step=" 3989 + mX.step + " dir=" + mX.dir + " acc=" + mX.acceleration 3990 + " move=" + event.getX() 3991 + " / Y=" + mY.position + " step=" 3992 + mY.step + " dir=" + mY.dir + " acc=" + mY.acceleration 3993 + " move=" + event.getY()); 3994 final float xOff = mX.collect(event.getX(), event.getEventTime(), "X"); 3995 final float yOff = mY.collect(event.getY(), event.getEventTime(), "Y"); 3996 3997 // Generate DPAD events based on the trackball movement. 3998 // We pick the axis that has moved the most as the direction of 3999 // the DPAD. When we generate DPAD events for one axis, then the 4000 // other axis is reset -- we don't want to perform DPAD jumps due 4001 // to slight movements in the trackball when making major movements 4002 // along the other axis. 4003 int keycode = 0; 4004 int movement = 0; 4005 float accel = 1; 4006 if (xOff > yOff) { 4007 movement = mX.generate(); 4008 if (movement != 0) { 4009 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_RIGHT 4010 : KeyEvent.KEYCODE_DPAD_LEFT; 4011 accel = mX.acceleration; 4012 mY.reset(2); 4013 } 4014 } else if (yOff > 0) { 4015 movement = mY.generate(); 4016 if (movement != 0) { 4017 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_DOWN 4018 : KeyEvent.KEYCODE_DPAD_UP; 4019 accel = mY.acceleration; 4020 mX.reset(2); 4021 } 4022 } 4023 4024 if (keycode != 0) { 4025 if (movement < 0) movement = -movement; 4026 int accelMovement = (int)(movement * accel); 4027 if (DEBUG_TRACKBALL) Log.v(TAG, "Move: movement=" + movement 4028 + " accelMovement=" + accelMovement 4029 + " accel=" + accel); 4030 if (accelMovement > movement) { 4031 if (DEBUG_TRACKBALL) Log.v(TAG, "Delivering fake DPAD: " 4032 + keycode); 4033 movement--; 4034 int repeatCount = accelMovement - movement; 4035 enqueueInputEvent(new KeyEvent(curTime, curTime, 4036 KeyEvent.ACTION_MULTIPLE, keycode, repeatCount, metaState, 4037 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4038 InputDevice.SOURCE_KEYBOARD)); 4039 } 4040 while (movement > 0) { 4041 if (DEBUG_TRACKBALL) Log.v(TAG, "Delivering fake DPAD: " 4042 + keycode); 4043 movement--; 4044 curTime = SystemClock.uptimeMillis(); 4045 enqueueInputEvent(new KeyEvent(curTime, curTime, 4046 KeyEvent.ACTION_DOWN, keycode, 0, metaState, 4047 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4048 InputDevice.SOURCE_KEYBOARD)); 4049 enqueueInputEvent(new KeyEvent(curTime, curTime, 4050 KeyEvent.ACTION_UP, keycode, 0, metaState, 4051 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4052 InputDevice.SOURCE_KEYBOARD)); 4053 } 4054 mLastTime = curTime; 4055 } 4056 } 4057 4058 public void cancel(MotionEvent event) { 4059 mLastTime = Integer.MIN_VALUE; 4060 4061 // If we reach this, we consumed a trackball event. 4062 // Because we will not translate the trackball event into a key event, 4063 // touch mode will not exit, so we exit touch mode here. 4064 if (mView != null && mAdded) { 4065 ensureTouchMode(false); 4066 } 4067 } 4068 } 4069 4070 /** 4071 * Maintains state information for a single trackball axis, generating 4072 * discrete (DPAD) movements based on raw trackball motion. 4073 */ 4074 static final class TrackballAxis { 4075 /** 4076 * The maximum amount of acceleration we will apply. 4077 */ 4078 static final float MAX_ACCELERATION = 20; 4079 4080 /** 4081 * The maximum amount of time (in milliseconds) between events in order 4082 * for us to consider the user to be doing fast trackball movements, 4083 * and thus apply an acceleration. 4084 */ 4085 static final long FAST_MOVE_TIME = 150; 4086 4087 /** 4088 * Scaling factor to the time (in milliseconds) between events to how 4089 * much to multiple/divide the current acceleration. When movement 4090 * is < FAST_MOVE_TIME this multiplies the acceleration; when > 4091 * FAST_MOVE_TIME it divides it. 4092 */ 4093 static final float ACCEL_MOVE_SCALING_FACTOR = (1.0f/40); 4094 4095 static final float FIRST_MOVEMENT_THRESHOLD = 0.5f; 4096 static final float SECOND_CUMULATIVE_MOVEMENT_THRESHOLD = 2.0f; 4097 static final float SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD = 1.0f; 4098 4099 float position; 4100 float acceleration = 1; 4101 long lastMoveTime = 0; 4102 int step; 4103 int dir; 4104 int nonAccelMovement; 4105 4106 void reset(int _step) { 4107 position = 0; 4108 acceleration = 1; 4109 lastMoveTime = 0; 4110 step = _step; 4111 dir = 0; 4112 } 4113 4114 /** 4115 * Add trackball movement into the state. If the direction of movement 4116 * has been reversed, the state is reset before adding the 4117 * movement (so that you don't have to compensate for any previously 4118 * collected movement before see the result of the movement in the 4119 * new direction). 4120 * 4121 * @return Returns the absolute value of the amount of movement 4122 * collected so far. 4123 */ 4124 float collect(float off, long time, String axis) { 4125 long normTime; 4126 if (off > 0) { 4127 normTime = (long)(off * FAST_MOVE_TIME); 4128 if (dir < 0) { 4129 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to positive!"); 4130 position = 0; 4131 step = 0; 4132 acceleration = 1; 4133 lastMoveTime = 0; 4134 } 4135 dir = 1; 4136 } else if (off < 0) { 4137 normTime = (long)((-off) * FAST_MOVE_TIME); 4138 if (dir > 0) { 4139 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to negative!"); 4140 position = 0; 4141 step = 0; 4142 acceleration = 1; 4143 lastMoveTime = 0; 4144 } 4145 dir = -1; 4146 } else { 4147 normTime = 0; 4148 } 4149 4150 // The number of milliseconds between each movement that is 4151 // considered "normal" and will not result in any acceleration 4152 // or deceleration, scaled by the offset we have here. 4153 if (normTime > 0) { 4154 long delta = time - lastMoveTime; 4155 lastMoveTime = time; 4156 float acc = acceleration; 4157 if (delta < normTime) { 4158 // The user is scrolling rapidly, so increase acceleration. 4159 float scale = (normTime-delta) * ACCEL_MOVE_SCALING_FACTOR; 4160 if (scale > 1) acc *= scale; 4161 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " accelerate: off=" 4162 + off + " normTime=" + normTime + " delta=" + delta 4163 + " scale=" + scale + " acc=" + acc); 4164 acceleration = acc < MAX_ACCELERATION ? acc : MAX_ACCELERATION; 4165 } else { 4166 // The user is scrolling slowly, so decrease acceleration. 4167 float scale = (delta-normTime) * ACCEL_MOVE_SCALING_FACTOR; 4168 if (scale > 1) acc /= scale; 4169 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " deccelerate: off=" 4170 + off + " normTime=" + normTime + " delta=" + delta 4171 + " scale=" + scale + " acc=" + acc); 4172 acceleration = acc > 1 ? acc : 1; 4173 } 4174 } 4175 position += off; 4176 return Math.abs(position); 4177 } 4178 4179 /** 4180 * Generate the number of discrete movement events appropriate for 4181 * the currently collected trackball movement. 4182 * 4183 * @return Returns the number of discrete movements, either positive 4184 * or negative, or 0 if there is not enough trackball movement yet 4185 * for a discrete movement. 4186 */ 4187 int generate() { 4188 int movement = 0; 4189 nonAccelMovement = 0; 4190 do { 4191 final int dir = position >= 0 ? 1 : -1; 4192 switch (step) { 4193 // If we are going to execute the first step, then we want 4194 // to do this as soon as possible instead of waiting for 4195 // a full movement, in order to make things look responsive. 4196 case 0: 4197 if (Math.abs(position) < FIRST_MOVEMENT_THRESHOLD) { 4198 return movement; 4199 } 4200 movement += dir; 4201 nonAccelMovement += dir; 4202 step = 1; 4203 break; 4204 // If we have generated the first movement, then we need 4205 // to wait for the second complete trackball motion before 4206 // generating the second discrete movement. 4207 case 1: 4208 if (Math.abs(position) < SECOND_CUMULATIVE_MOVEMENT_THRESHOLD) { 4209 return movement; 4210 } 4211 movement += dir; 4212 nonAccelMovement += dir; 4213 position -= SECOND_CUMULATIVE_MOVEMENT_THRESHOLD * dir; 4214 step = 2; 4215 break; 4216 // After the first two, we generate discrete movements 4217 // consistently with the trackball, applying an acceleration 4218 // if the trackball is moving quickly. This is a simple 4219 // acceleration on top of what we already compute based 4220 // on how quickly the wheel is being turned, to apply 4221 // a longer increasing acceleration to continuous movement 4222 // in one direction. 4223 default: 4224 if (Math.abs(position) < SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD) { 4225 return movement; 4226 } 4227 movement += dir; 4228 position -= dir * SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD; 4229 float acc = acceleration; 4230 acc *= 1.1f; 4231 acceleration = acc < MAX_ACCELERATION ? acc : acceleration; 4232 break; 4233 } 4234 } while (true); 4235 } 4236 } 4237 4238 /** 4239 * Creates dpad events from unhandled joystick movements. 4240 */ 4241 final class SyntheticJoystickHandler extends Handler { 4242 private final static int MSG_ENQUEUE_X_AXIS_KEY_REPEAT = 1; 4243 private final static int MSG_ENQUEUE_Y_AXIS_KEY_REPEAT = 2; 4244 4245 private int mLastXDirection; 4246 private int mLastYDirection; 4247 private int mLastXKeyCode; 4248 private int mLastYKeyCode; 4249 4250 public SyntheticJoystickHandler() { 4251 super(true); 4252 } 4253 4254 @Override 4255 public void handleMessage(Message msg) { 4256 switch (msg.what) { 4257 case MSG_ENQUEUE_X_AXIS_KEY_REPEAT: 4258 case MSG_ENQUEUE_Y_AXIS_KEY_REPEAT: { 4259 KeyEvent oldEvent = (KeyEvent)msg.obj; 4260 KeyEvent e = KeyEvent.changeTimeRepeat(oldEvent, 4261 SystemClock.uptimeMillis(), 4262 oldEvent.getRepeatCount() + 1); 4263 if (mAttachInfo.mHasWindowFocus) { 4264 enqueueInputEvent(e); 4265 Message m = obtainMessage(msg.what, e); 4266 m.setAsynchronous(true); 4267 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatDelay()); 4268 } 4269 } break; 4270 } 4271 } 4272 4273 public void process(MotionEvent event) { 4274 update(event, true); 4275 } 4276 4277 public void cancel(MotionEvent event) { 4278 update(event, false); 4279 } 4280 4281 private void update(MotionEvent event, boolean synthesizeNewKeys) { 4282 final long time = event.getEventTime(); 4283 final int metaState = event.getMetaState(); 4284 final int deviceId = event.getDeviceId(); 4285 final int source = event.getSource(); 4286 4287 int xDirection = joystickAxisValueToDirection( 4288 event.getAxisValue(MotionEvent.AXIS_HAT_X)); 4289 if (xDirection == 0) { 4290 xDirection = joystickAxisValueToDirection(event.getX()); 4291 } 4292 4293 int yDirection = joystickAxisValueToDirection( 4294 event.getAxisValue(MotionEvent.AXIS_HAT_Y)); 4295 if (yDirection == 0) { 4296 yDirection = joystickAxisValueToDirection(event.getY()); 4297 } 4298 4299 if (xDirection != mLastXDirection) { 4300 if (mLastXKeyCode != 0) { 4301 removeMessages(MSG_ENQUEUE_X_AXIS_KEY_REPEAT); 4302 enqueueInputEvent(new KeyEvent(time, time, 4303 KeyEvent.ACTION_UP, mLastXKeyCode, 0, metaState, 4304 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4305 mLastXKeyCode = 0; 4306 } 4307 4308 mLastXDirection = xDirection; 4309 4310 if (xDirection != 0 && synthesizeNewKeys) { 4311 mLastXKeyCode = xDirection > 0 4312 ? KeyEvent.KEYCODE_DPAD_RIGHT : KeyEvent.KEYCODE_DPAD_LEFT; 4313 final KeyEvent e = new KeyEvent(time, time, 4314 KeyEvent.ACTION_DOWN, mLastXKeyCode, 0, metaState, 4315 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4316 enqueueInputEvent(e); 4317 Message m = obtainMessage(MSG_ENQUEUE_X_AXIS_KEY_REPEAT, e); 4318 m.setAsynchronous(true); 4319 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4320 } 4321 } 4322 4323 if (yDirection != mLastYDirection) { 4324 if (mLastYKeyCode != 0) { 4325 removeMessages(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT); 4326 enqueueInputEvent(new KeyEvent(time, time, 4327 KeyEvent.ACTION_UP, mLastYKeyCode, 0, metaState, 4328 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4329 mLastYKeyCode = 0; 4330 } 4331 4332 mLastYDirection = yDirection; 4333 4334 if (yDirection != 0 && synthesizeNewKeys) { 4335 mLastYKeyCode = yDirection > 0 4336 ? KeyEvent.KEYCODE_DPAD_DOWN : KeyEvent.KEYCODE_DPAD_UP; 4337 final KeyEvent e = new KeyEvent(time, time, 4338 KeyEvent.ACTION_DOWN, mLastYKeyCode, 0, metaState, 4339 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4340 enqueueInputEvent(e); 4341 Message m = obtainMessage(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT, e); 4342 m.setAsynchronous(true); 4343 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4344 } 4345 } 4346 } 4347 4348 private int joystickAxisValueToDirection(float value) { 4349 if (value >= 0.5f) { 4350 return 1; 4351 } else if (value <= -0.5f) { 4352 return -1; 4353 } else { 4354 return 0; 4355 } 4356 } 4357 } 4358 4359 /** 4360 * Creates dpad events from unhandled touch navigation movements. 4361 */ 4362 final class SyntheticTouchNavigationHandler extends Handler { 4363 private static final String LOCAL_TAG = "SyntheticTouchNavigationHandler"; 4364 private static final boolean LOCAL_DEBUG = false; 4365 4366 // Assumed nominal width and height in millimeters of a touch navigation pad, 4367 // if no resolution information is available from the input system. 4368 private static final float DEFAULT_WIDTH_MILLIMETERS = 48; 4369 private static final float DEFAULT_HEIGHT_MILLIMETERS = 48; 4370 4371 /* TODO: These constants should eventually be moved to ViewConfiguration. */ 4372 4373 // Tap timeout in milliseconds. 4374 private static final int TAP_TIMEOUT = 250; 4375 4376 // The maximum distance traveled for a gesture to be considered a tap in millimeters. 4377 private static final int TAP_SLOP_MILLIMETERS = 5; 4378 4379 // The nominal distance traveled to move by one unit. 4380 private static final int TICK_DISTANCE_MILLIMETERS = 12; 4381 4382 // Minimum and maximum fling velocity in ticks per second. 4383 // The minimum velocity should be set such that we perform enough ticks per 4384 // second that the fling appears to be fluid. For example, if we set the minimum 4385 // to 2 ticks per second, then there may be up to half a second delay between the next 4386 // to last and last ticks which is noticeably discrete and jerky. This value should 4387 // probably not be set to anything less than about 4. 4388 // If fling accuracy is a problem then consider tuning the tick distance instead. 4389 private static final float MIN_FLING_VELOCITY_TICKS_PER_SECOND = 6f; 4390 private static final float MAX_FLING_VELOCITY_TICKS_PER_SECOND = 20f; 4391 4392 // Fling velocity decay factor applied after each new key is emitted. 4393 // This parameter controls the deceleration and overall duration of the fling. 4394 // The fling stops automatically when its velocity drops below the minimum 4395 // fling velocity defined above. 4396 private static final float FLING_TICK_DECAY = 0.8f; 4397 4398 /* The input device that we are tracking. */ 4399 4400 private int mCurrentDeviceId = -1; 4401 private int mCurrentSource; 4402 private boolean mCurrentDeviceSupported; 4403 4404 /* Configuration for the current input device. */ 4405 4406 // The tap timeout and scaled slop. 4407 private int mConfigTapTimeout; 4408 private float mConfigTapSlop; 4409 4410 // The scaled tick distance. A movement of this amount should generally translate 4411 // into a single dpad event in a given direction. 4412 private float mConfigTickDistance; 4413 4414 // The minimum and maximum scaled fling velocity. 4415 private float mConfigMinFlingVelocity; 4416 private float mConfigMaxFlingVelocity; 4417 4418 /* Tracking state. */ 4419 4420 // The velocity tracker for detecting flings. 4421 private VelocityTracker mVelocityTracker; 4422 4423 // The active pointer id, or -1 if none. 4424 private int mActivePointerId = -1; 4425 4426 // Time and location where tracking started. 4427 private long mStartTime; 4428 private float mStartX; 4429 private float mStartY; 4430 4431 // Most recently observed position. 4432 private float mLastX; 4433 private float mLastY; 4434 4435 // Accumulated movement delta since the last direction key was sent. 4436 private float mAccumulatedX; 4437 private float mAccumulatedY; 4438 4439 // Set to true if any movement was delivered to the app. 4440 // Implies that tap slop was exceeded. 4441 private boolean mConsumedMovement; 4442 4443 // The most recently sent key down event. 4444 // The keycode remains set until the direction changes or a fling ends 4445 // so that repeated key events may be generated as required. 4446 private long mPendingKeyDownTime; 4447 private int mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 4448 private int mPendingKeyRepeatCount; 4449 private int mPendingKeyMetaState; 4450 4451 // The current fling velocity while a fling is in progress. 4452 private boolean mFlinging; 4453 private float mFlingVelocity; 4454 4455 public SyntheticTouchNavigationHandler() { 4456 super(true); 4457 } 4458 4459 public void process(MotionEvent event) { 4460 // Update the current device information. 4461 final long time = event.getEventTime(); 4462 final int deviceId = event.getDeviceId(); 4463 final int source = event.getSource(); 4464 if (mCurrentDeviceId != deviceId || mCurrentSource != source) { 4465 finishKeys(time); 4466 finishTracking(time); 4467 mCurrentDeviceId = deviceId; 4468 mCurrentSource = source; 4469 mCurrentDeviceSupported = false; 4470 InputDevice device = event.getDevice(); 4471 if (device != null) { 4472 // In order to support an input device, we must know certain 4473 // characteristics about it, such as its size and resolution. 4474 InputDevice.MotionRange xRange = device.getMotionRange(MotionEvent.AXIS_X); 4475 InputDevice.MotionRange yRange = device.getMotionRange(MotionEvent.AXIS_Y); 4476 if (xRange != null && yRange != null) { 4477 mCurrentDeviceSupported = true; 4478 4479 // Infer the resolution if it not actually known. 4480 float xRes = xRange.getResolution(); 4481 if (xRes <= 0) { 4482 xRes = xRange.getRange() / DEFAULT_WIDTH_MILLIMETERS; 4483 } 4484 float yRes = yRange.getResolution(); 4485 if (yRes <= 0) { 4486 yRes = yRange.getRange() / DEFAULT_HEIGHT_MILLIMETERS; 4487 } 4488 float nominalRes = (xRes + yRes) * 0.5f; 4489 4490 // Precompute all of the configuration thresholds we will need. 4491 mConfigTapTimeout = TAP_TIMEOUT; 4492 mConfigTapSlop = TAP_SLOP_MILLIMETERS * nominalRes; 4493 mConfigTickDistance = TICK_DISTANCE_MILLIMETERS * nominalRes; 4494 mConfigMinFlingVelocity = 4495 MIN_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 4496 mConfigMaxFlingVelocity = 4497 MAX_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 4498 4499 if (LOCAL_DEBUG) { 4500 Log.d(LOCAL_TAG, "Configured device " + mCurrentDeviceId 4501 + " (" + Integer.toHexString(mCurrentSource) + "): " 4502 + "mConfigTapTimeout=" + mConfigTapTimeout 4503 + ", mConfigTapSlop=" + mConfigTapSlop 4504 + ", mConfigTickDistance=" + mConfigTickDistance 4505 + ", mConfigMinFlingVelocity=" + mConfigMinFlingVelocity 4506 + ", mConfigMaxFlingVelocity=" + mConfigMaxFlingVelocity); 4507 } 4508 } 4509 } 4510 } 4511 if (!mCurrentDeviceSupported) { 4512 return; 4513 } 4514 4515 // Handle the event. 4516 final int action = event.getActionMasked(); 4517 switch (action) { 4518 case MotionEvent.ACTION_DOWN: { 4519 boolean caughtFling = mFlinging; 4520 finishKeys(time); 4521 finishTracking(time); 4522 mActivePointerId = event.getPointerId(0); 4523 mVelocityTracker = VelocityTracker.obtain(); 4524 mVelocityTracker.addMovement(event); 4525 mStartTime = time; 4526 mStartX = event.getX(); 4527 mStartY = event.getY(); 4528 mLastX = mStartX; 4529 mLastY = mStartY; 4530 mAccumulatedX = 0; 4531 mAccumulatedY = 0; 4532 4533 // If we caught a fling, then pretend that the tap slop has already 4534 // been exceeded to suppress taps whose only purpose is to stop the fling. 4535 mConsumedMovement = caughtFling; 4536 break; 4537 } 4538 4539 case MotionEvent.ACTION_MOVE: 4540 case MotionEvent.ACTION_UP: { 4541 if (mActivePointerId < 0) { 4542 break; 4543 } 4544 final int index = event.findPointerIndex(mActivePointerId); 4545 if (index < 0) { 4546 finishKeys(time); 4547 finishTracking(time); 4548 break; 4549 } 4550 4551 mVelocityTracker.addMovement(event); 4552 final float x = event.getX(index); 4553 final float y = event.getY(index); 4554 mAccumulatedX += x - mLastX; 4555 mAccumulatedY += y - mLastY; 4556 mLastX = x; 4557 mLastY = y; 4558 4559 // Consume any accumulated movement so far. 4560 final int metaState = event.getMetaState(); 4561 consumeAccumulatedMovement(time, metaState); 4562 4563 // Detect taps and flings. 4564 if (action == MotionEvent.ACTION_UP) { 4565 if (!mConsumedMovement 4566 && Math.hypot(mLastX - mStartX, mLastY - mStartY) < mConfigTapSlop 4567 && time <= mStartTime + mConfigTapTimeout) { 4568 // It's a tap! 4569 finishKeys(time); 4570 sendKeyDownOrRepeat(time, KeyEvent.KEYCODE_DPAD_CENTER, metaState); 4571 sendKeyUp(time); 4572 } else if (mConsumedMovement 4573 && mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 4574 // It might be a fling. 4575 mVelocityTracker.computeCurrentVelocity(1000, mConfigMaxFlingVelocity); 4576 final float vx = mVelocityTracker.getXVelocity(mActivePointerId); 4577 final float vy = mVelocityTracker.getYVelocity(mActivePointerId); 4578 if (!startFling(time, vx, vy)) { 4579 finishKeys(time); 4580 } 4581 } 4582 finishTracking(time); 4583 } 4584 break; 4585 } 4586 4587 case MotionEvent.ACTION_CANCEL: { 4588 finishKeys(time); 4589 finishTracking(time); 4590 break; 4591 } 4592 } 4593 } 4594 4595 public void cancel(MotionEvent event) { 4596 if (mCurrentDeviceId == event.getDeviceId() 4597 && mCurrentSource == event.getSource()) { 4598 final long time = event.getEventTime(); 4599 finishKeys(time); 4600 finishTracking(time); 4601 } 4602 } 4603 4604 private void finishKeys(long time) { 4605 cancelFling(); 4606 sendKeyUp(time); 4607 } 4608 4609 private void finishTracking(long time) { 4610 if (mActivePointerId >= 0) { 4611 mActivePointerId = -1; 4612 mVelocityTracker.recycle(); 4613 mVelocityTracker = null; 4614 } 4615 } 4616 4617 private void consumeAccumulatedMovement(long time, int metaState) { 4618 final float absX = Math.abs(mAccumulatedX); 4619 final float absY = Math.abs(mAccumulatedY); 4620 if (absX >= absY) { 4621 if (absX >= mConfigTickDistance) { 4622 mAccumulatedX = consumeAccumulatedMovement(time, metaState, mAccumulatedX, 4623 KeyEvent.KEYCODE_DPAD_LEFT, KeyEvent.KEYCODE_DPAD_RIGHT); 4624 mAccumulatedY = 0; 4625 mConsumedMovement = true; 4626 } 4627 } else { 4628 if (absY >= mConfigTickDistance) { 4629 mAccumulatedY = consumeAccumulatedMovement(time, metaState, mAccumulatedY, 4630 KeyEvent.KEYCODE_DPAD_UP, KeyEvent.KEYCODE_DPAD_DOWN); 4631 mAccumulatedX = 0; 4632 mConsumedMovement = true; 4633 } 4634 } 4635 } 4636 4637 private float consumeAccumulatedMovement(long time, int metaState, 4638 float accumulator, int negativeKeyCode, int positiveKeyCode) { 4639 while (accumulator <= -mConfigTickDistance) { 4640 sendKeyDownOrRepeat(time, negativeKeyCode, metaState); 4641 accumulator += mConfigTickDistance; 4642 } 4643 while (accumulator >= mConfigTickDistance) { 4644 sendKeyDownOrRepeat(time, positiveKeyCode, metaState); 4645 accumulator -= mConfigTickDistance; 4646 } 4647 return accumulator; 4648 } 4649 4650 private void sendKeyDownOrRepeat(long time, int keyCode, int metaState) { 4651 if (mPendingKeyCode != keyCode) { 4652 sendKeyUp(time); 4653 mPendingKeyDownTime = time; 4654 mPendingKeyCode = keyCode; 4655 mPendingKeyRepeatCount = 0; 4656 } else { 4657 mPendingKeyRepeatCount += 1; 4658 } 4659 mPendingKeyMetaState = metaState; 4660 4661 // Note: Normally we would pass FLAG_LONG_PRESS when the repeat count is 1 4662 // but it doesn't quite make sense when simulating the events in this way. 4663 if (LOCAL_DEBUG) { 4664 Log.d(LOCAL_TAG, "Sending key down: keyCode=" + mPendingKeyCode 4665 + ", repeatCount=" + mPendingKeyRepeatCount 4666 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 4667 } 4668 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 4669 KeyEvent.ACTION_DOWN, mPendingKeyCode, mPendingKeyRepeatCount, 4670 mPendingKeyMetaState, mCurrentDeviceId, 4671 KeyEvent.FLAG_FALLBACK, mCurrentSource)); 4672 } 4673 4674 private void sendKeyUp(long time) { 4675 if (mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 4676 if (LOCAL_DEBUG) { 4677 Log.d(LOCAL_TAG, "Sending key up: keyCode=" + mPendingKeyCode 4678 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 4679 } 4680 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 4681 KeyEvent.ACTION_UP, mPendingKeyCode, 0, mPendingKeyMetaState, 4682 mCurrentDeviceId, 0, KeyEvent.FLAG_FALLBACK, 4683 mCurrentSource)); 4684 mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 4685 } 4686 } 4687 4688 private boolean startFling(long time, float vx, float vy) { 4689 if (LOCAL_DEBUG) { 4690 Log.d(LOCAL_TAG, "Considering fling: vx=" + vx + ", vy=" + vy 4691 + ", min=" + mConfigMinFlingVelocity); 4692 } 4693 4694 // Flings must be oriented in the same direction as the preceding movements. 4695 switch (mPendingKeyCode) { 4696 case KeyEvent.KEYCODE_DPAD_LEFT: 4697 if (-vx >= mConfigMinFlingVelocity 4698 && Math.abs(vy) < mConfigMinFlingVelocity) { 4699 mFlingVelocity = -vx; 4700 break; 4701 } 4702 return false; 4703 4704 case KeyEvent.KEYCODE_DPAD_RIGHT: 4705 if (vx >= mConfigMinFlingVelocity 4706 && Math.abs(vy) < mConfigMinFlingVelocity) { 4707 mFlingVelocity = vx; 4708 break; 4709 } 4710 return false; 4711 4712 case KeyEvent.KEYCODE_DPAD_UP: 4713 if (-vy >= mConfigMinFlingVelocity 4714 && Math.abs(vx) < mConfigMinFlingVelocity) { 4715 mFlingVelocity = -vy; 4716 break; 4717 } 4718 return false; 4719 4720 case KeyEvent.KEYCODE_DPAD_DOWN: 4721 if (vy >= mConfigMinFlingVelocity 4722 && Math.abs(vx) < mConfigMinFlingVelocity) { 4723 mFlingVelocity = vy; 4724 break; 4725 } 4726 return false; 4727 } 4728 4729 // Post the first fling event. 4730 mFlinging = postFling(time); 4731 return mFlinging; 4732 } 4733 4734 private boolean postFling(long time) { 4735 // The idea here is to estimate the time when the pointer would have 4736 // traveled one tick distance unit given the current fling velocity. 4737 // This effect creates continuity of motion. 4738 if (mFlingVelocity >= mConfigMinFlingVelocity) { 4739 long delay = (long)(mConfigTickDistance / mFlingVelocity * 1000); 4740 postAtTime(mFlingRunnable, time + delay); 4741 if (LOCAL_DEBUG) { 4742 Log.d(LOCAL_TAG, "Posted fling: velocity=" 4743 + mFlingVelocity + ", delay=" + delay 4744 + ", keyCode=" + mPendingKeyCode); 4745 } 4746 return true; 4747 } 4748 return false; 4749 } 4750 4751 private void cancelFling() { 4752 if (mFlinging) { 4753 removeCallbacks(mFlingRunnable); 4754 mFlinging = false; 4755 } 4756 } 4757 4758 private final Runnable mFlingRunnable = new Runnable() { 4759 @Override 4760 public void run() { 4761 final long time = SystemClock.uptimeMillis(); 4762 sendKeyDownOrRepeat(time, mPendingKeyCode, mPendingKeyMetaState); 4763 mFlingVelocity *= FLING_TICK_DECAY; 4764 if (!postFling(time)) { 4765 mFlinging = false; 4766 finishKeys(time); 4767 } 4768 } 4769 }; 4770 } 4771 4772 /** 4773 * Returns true if the key is used for keyboard navigation. 4774 * @param keyEvent The key event. 4775 * @return True if the key is used for keyboard navigation. 4776 */ 4777 private static boolean isNavigationKey(KeyEvent keyEvent) { 4778 switch (keyEvent.getKeyCode()) { 4779 case KeyEvent.KEYCODE_DPAD_LEFT: 4780 case KeyEvent.KEYCODE_DPAD_RIGHT: 4781 case KeyEvent.KEYCODE_DPAD_UP: 4782 case KeyEvent.KEYCODE_DPAD_DOWN: 4783 case KeyEvent.KEYCODE_DPAD_CENTER: 4784 case KeyEvent.KEYCODE_PAGE_UP: 4785 case KeyEvent.KEYCODE_PAGE_DOWN: 4786 case KeyEvent.KEYCODE_MOVE_HOME: 4787 case KeyEvent.KEYCODE_MOVE_END: 4788 case KeyEvent.KEYCODE_TAB: 4789 case KeyEvent.KEYCODE_SPACE: 4790 case KeyEvent.KEYCODE_ENTER: 4791 return true; 4792 } 4793 return false; 4794 } 4795 4796 /** 4797 * Returns true if the key is used for typing. 4798 * @param keyEvent The key event. 4799 * @return True if the key is used for typing. 4800 */ 4801 private static boolean isTypingKey(KeyEvent keyEvent) { 4802 return keyEvent.getUnicodeChar() > 0; 4803 } 4804 4805 /** 4806 * See if the key event means we should leave touch mode (and leave touch mode if so). 4807 * @param event The key event. 4808 * @return Whether this key event should be consumed (meaning the act of 4809 * leaving touch mode alone is considered the event). 4810 */ 4811 private boolean checkForLeavingTouchModeAndConsume(KeyEvent event) { 4812 // Only relevant in touch mode. 4813 if (!mAttachInfo.mInTouchMode) { 4814 return false; 4815 } 4816 4817 // Only consider leaving touch mode on DOWN or MULTIPLE actions, never on UP. 4818 final int action = event.getAction(); 4819 if (action != KeyEvent.ACTION_DOWN && action != KeyEvent.ACTION_MULTIPLE) { 4820 return false; 4821 } 4822 4823 // Don't leave touch mode if the IME told us not to. 4824 if ((event.getFlags() & KeyEvent.FLAG_KEEP_TOUCH_MODE) != 0) { 4825 return false; 4826 } 4827 4828 // If the key can be used for keyboard navigation then leave touch mode 4829 // and select a focused view if needed (in ensureTouchMode). 4830 // When a new focused view is selected, we consume the navigation key because 4831 // navigation doesn't make much sense unless a view already has focus so 4832 // the key's purpose is to set focus. 4833 if (isNavigationKey(event)) { 4834 return ensureTouchMode(false); 4835 } 4836 4837 // If the key can be used for typing then leave touch mode 4838 // and select a focused view if needed (in ensureTouchMode). 4839 // Always allow the view to process the typing key. 4840 if (isTypingKey(event)) { 4841 ensureTouchMode(false); 4842 return false; 4843 } 4844 4845 return false; 4846 } 4847 4848 /* drag/drop */ 4849 void setLocalDragState(Object obj) { 4850 mLocalDragState = obj; 4851 } 4852 4853 private void handleDragEvent(DragEvent event) { 4854 // From the root, only drag start/end/location are dispatched. entered/exited 4855 // are determined and dispatched by the viewgroup hierarchy, who then report 4856 // that back here for ultimate reporting back to the framework. 4857 if (mView != null && mAdded) { 4858 final int what = event.mAction; 4859 4860 if (what == DragEvent.ACTION_DRAG_EXITED) { 4861 // A direct EXITED event means that the window manager knows we've just crossed 4862 // a window boundary, so the current drag target within this one must have 4863 // just been exited. Send it the usual notifications and then we're done 4864 // for now. 4865 mView.dispatchDragEvent(event); 4866 } else { 4867 // Cache the drag description when the operation starts, then fill it in 4868 // on subsequent calls as a convenience 4869 if (what == DragEvent.ACTION_DRAG_STARTED) { 4870 mCurrentDragView = null; // Start the current-recipient tracking 4871 mDragDescription = event.mClipDescription; 4872 } else { 4873 event.mClipDescription = mDragDescription; 4874 } 4875 4876 // For events with a [screen] location, translate into window coordinates 4877 if ((what == DragEvent.ACTION_DRAG_LOCATION) || (what == DragEvent.ACTION_DROP)) { 4878 mDragPoint.set(event.mX, event.mY); 4879 if (mTranslator != null) { 4880 mTranslator.translatePointInScreenToAppWindow(mDragPoint); 4881 } 4882 4883 if (mCurScrollY != 0) { 4884 mDragPoint.offset(0, mCurScrollY); 4885 } 4886 4887 event.mX = mDragPoint.x; 4888 event.mY = mDragPoint.y; 4889 } 4890 4891 // Remember who the current drag target is pre-dispatch 4892 final View prevDragView = mCurrentDragView; 4893 4894 // Now dispatch the drag/drop event 4895 boolean result = mView.dispatchDragEvent(event); 4896 4897 // If we changed apparent drag target, tell the OS about it 4898 if (prevDragView != mCurrentDragView) { 4899 try { 4900 if (prevDragView != null) { 4901 mWindowSession.dragRecipientExited(mWindow); 4902 } 4903 if (mCurrentDragView != null) { 4904 mWindowSession.dragRecipientEntered(mWindow); 4905 } 4906 } catch (RemoteException e) { 4907 Slog.e(TAG, "Unable to note drag target change"); 4908 } 4909 } 4910 4911 // Report the drop result when we're done 4912 if (what == DragEvent.ACTION_DROP) { 4913 mDragDescription = null; 4914 try { 4915 Log.i(TAG, "Reporting drop result: " + result); 4916 mWindowSession.reportDropResult(mWindow, result); 4917 } catch (RemoteException e) { 4918 Log.e(TAG, "Unable to report drop result"); 4919 } 4920 } 4921 4922 // When the drag operation ends, release any local state object 4923 // that may have been in use 4924 if (what == DragEvent.ACTION_DRAG_ENDED) { 4925 setLocalDragState(null); 4926 } 4927 } 4928 } 4929 event.recycle(); 4930 } 4931 4932 public void handleDispatchSystemUiVisibilityChanged(SystemUiVisibilityInfo args) { 4933 if (mSeq != args.seq) { 4934 // The sequence has changed, so we need to update our value and make 4935 // sure to do a traversal afterward so the window manager is given our 4936 // most recent data. 4937 mSeq = args.seq; 4938 mAttachInfo.mForceReportNewAttributes = true; 4939 scheduleTraversals(); 4940 } 4941 if (mView == null) return; 4942 if (args.localChanges != 0) { 4943 mView.updateLocalSystemUiVisibility(args.localValue, args.localChanges); 4944 } 4945 if (mAttachInfo != null) { 4946 int visibility = args.globalVisibility&View.SYSTEM_UI_CLEARABLE_FLAGS; 4947 if (visibility != mAttachInfo.mGlobalSystemUiVisibility) { 4948 mAttachInfo.mGlobalSystemUiVisibility = visibility; 4949 mView.dispatchSystemUiVisibilityChanged(visibility); 4950 } 4951 } 4952 } 4953 4954 public void handleDispatchDoneAnimating() { 4955 if (mWindowsAnimating) { 4956 mWindowsAnimating = false; 4957 if (!mDirty.isEmpty() || mIsAnimating || mFullRedrawNeeded) { 4958 scheduleTraversals(); 4959 } 4960 } 4961 } 4962 4963 public void getLastTouchPoint(Point outLocation) { 4964 outLocation.x = (int) mLastTouchPoint.x; 4965 outLocation.y = (int) mLastTouchPoint.y; 4966 } 4967 4968 public void setDragFocus(View newDragTarget) { 4969 if (mCurrentDragView != newDragTarget) { 4970 mCurrentDragView = newDragTarget; 4971 } 4972 } 4973 4974 private AudioManager getAudioManager() { 4975 if (mView == null) { 4976 throw new IllegalStateException("getAudioManager called when there is no mView"); 4977 } 4978 if (mAudioManager == null) { 4979 mAudioManager = (AudioManager) mView.getContext().getSystemService(Context.AUDIO_SERVICE); 4980 } 4981 return mAudioManager; 4982 } 4983 4984 public AccessibilityInteractionController getAccessibilityInteractionController() { 4985 if (mView == null) { 4986 throw new IllegalStateException("getAccessibilityInteractionController" 4987 + " called when there is no mView"); 4988 } 4989 if (mAccessibilityInteractionController == null) { 4990 mAccessibilityInteractionController = new AccessibilityInteractionController(this); 4991 } 4992 return mAccessibilityInteractionController; 4993 } 4994 4995 private int relayoutWindow(WindowManager.LayoutParams params, int viewVisibility, 4996 boolean insetsPending) throws RemoteException { 4997 4998 float appScale = mAttachInfo.mApplicationScale; 4999 boolean restore = false; 5000 if (params != null && mTranslator != null) { 5001 restore = true; 5002 params.backup(); 5003 mTranslator.translateWindowLayout(params); 5004 } 5005 if (params != null) { 5006 if (DBG) Log.d(TAG, "WindowLayout in layoutWindow:" + params); 5007 } 5008 mPendingConfiguration.seq = 0; 5009 //Log.d(TAG, ">>>>>> CALLING relayout"); 5010 if (params != null && mOrigWindowType != params.type) { 5011 // For compatibility with old apps, don't crash here. 5012 if (mTargetSdkVersion < android.os.Build.VERSION_CODES.ICE_CREAM_SANDWICH) { 5013 Slog.w(TAG, "Window type can not be changed after " 5014 + "the window is added; ignoring change of " + mView); 5015 params.type = mOrigWindowType; 5016 } 5017 } 5018 int relayoutResult = mWindowSession.relayout( 5019 mWindow, mSeq, params, 5020 (int) (mView.getMeasuredWidth() * appScale + 0.5f), 5021 (int) (mView.getMeasuredHeight() * appScale + 0.5f), 5022 viewVisibility, insetsPending ? WindowManagerGlobal.RELAYOUT_INSETS_PENDING : 0, 5023 mWinFrame, mPendingOverscanInsets, mPendingContentInsets, mPendingVisibleInsets, 5024 mPendingConfiguration, mSurface); 5025 //Log.d(TAG, "<<<<<< BACK FROM relayout"); 5026 if (restore) { 5027 params.restore(); 5028 } 5029 5030 if (mTranslator != null) { 5031 mTranslator.translateRectInScreenToAppWinFrame(mWinFrame); 5032 mTranslator.translateRectInScreenToAppWindow(mPendingOverscanInsets); 5033 mTranslator.translateRectInScreenToAppWindow(mPendingContentInsets); 5034 mTranslator.translateRectInScreenToAppWindow(mPendingVisibleInsets); 5035 } 5036 return relayoutResult; 5037 } 5038 5039 /** 5040 * {@inheritDoc} 5041 */ 5042 public void playSoundEffect(int effectId) { 5043 checkThread(); 5044 5045 if (mMediaDisabled) { 5046 return; 5047 } 5048 5049 try { 5050 final AudioManager audioManager = getAudioManager(); 5051 5052 switch (effectId) { 5053 case SoundEffectConstants.CLICK: 5054 audioManager.playSoundEffect(AudioManager.FX_KEY_CLICK); 5055 return; 5056 case SoundEffectConstants.NAVIGATION_DOWN: 5057 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_DOWN); 5058 return; 5059 case SoundEffectConstants.NAVIGATION_LEFT: 5060 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_LEFT); 5061 return; 5062 case SoundEffectConstants.NAVIGATION_RIGHT: 5063 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_RIGHT); 5064 return; 5065 case SoundEffectConstants.NAVIGATION_UP: 5066 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_UP); 5067 return; 5068 default: 5069 throw new IllegalArgumentException("unknown effect id " + effectId + 5070 " not defined in " + SoundEffectConstants.class.getCanonicalName()); 5071 } 5072 } catch (IllegalStateException e) { 5073 // Exception thrown by getAudioManager() when mView is null 5074 Log.e(TAG, "FATAL EXCEPTION when attempting to play sound effect: " + e); 5075 e.printStackTrace(); 5076 } 5077 } 5078 5079 /** 5080 * {@inheritDoc} 5081 */ 5082 public boolean performHapticFeedback(int effectId, boolean always) { 5083 try { 5084 return mWindowSession.performHapticFeedback(mWindow, effectId, always); 5085 } catch (RemoteException e) { 5086 return false; 5087 } 5088 } 5089 5090 /** 5091 * {@inheritDoc} 5092 */ 5093 public View focusSearch(View focused, int direction) { 5094 checkThread(); 5095 if (!(mView instanceof ViewGroup)) { 5096 return null; 5097 } 5098 return FocusFinder.getInstance().findNextFocus((ViewGroup) mView, focused, direction); 5099 } 5100 5101 public void debug() { 5102 mView.debug(); 5103 } 5104 5105 public void dumpGfxInfo(int[] info) { 5106 info[0] = info[1] = 0; 5107 if (mView != null) { 5108 getGfxInfo(mView, info); 5109 } 5110 } 5111 5112 private static void getGfxInfo(View view, int[] info) { 5113 DisplayList displayList = view.mDisplayList; 5114 info[0]++; 5115 if (displayList != null) { 5116 info[1] += displayList.getSize(); 5117 } 5118 5119 if (view instanceof ViewGroup) { 5120 ViewGroup group = (ViewGroup) view; 5121 5122 int count = group.getChildCount(); 5123 for (int i = 0; i < count; i++) { 5124 getGfxInfo(group.getChildAt(i), info); 5125 } 5126 } 5127 } 5128 5129 public void die(boolean immediate) { 5130 // Make sure we do execute immediately if we are in the middle of a traversal or the damage 5131 // done by dispatchDetachedFromWindow will cause havoc on return. 5132 if (immediate && !mIsInTraversal) { 5133 doDie(); 5134 } else { 5135 if (!mIsDrawing) { 5136 destroyHardwareRenderer(); 5137 } else { 5138 Log.e(TAG, "Attempting to destroy the window while drawing!\n" + 5139 " window=" + this + ", title=" + mWindowAttributes.getTitle()); 5140 } 5141 mHandler.sendEmptyMessage(MSG_DIE); 5142 } 5143 } 5144 5145 void doDie() { 5146 checkThread(); 5147 if (LOCAL_LOGV) Log.v(TAG, "DIE in " + this + " of " + mSurface); 5148 synchronized (this) { 5149 if (mAdded) { 5150 Slog.d(TAG, "doDie: b9406261 mAdded==true mView=" + mView 5151 + " Callers=" + Debug.getCallers(4)); 5152 dispatchDetachedFromWindow(); 5153 } 5154 5155 if (mAdded && !mFirst) { 5156 invalidateDisplayLists(); 5157 destroyHardwareRenderer(); 5158 5159 if (mView != null) { 5160 int viewVisibility = mView.getVisibility(); 5161 boolean viewVisibilityChanged = mViewVisibility != viewVisibility; 5162 if (mWindowAttributesChanged || viewVisibilityChanged) { 5163 // If layout params have been changed, first give them 5164 // to the window manager to make sure it has the correct 5165 // animation info. 5166 try { 5167 if ((relayoutWindow(mWindowAttributes, viewVisibility, false) 5168 & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 5169 mWindowSession.finishDrawing(mWindow); 5170 } 5171 } catch (RemoteException e) { 5172 } 5173 } 5174 5175 mSurface.release(); 5176 } 5177 } 5178 5179 Slog.d(TAG, "doDie: b9406261 setting mAdded=false mView=" + mView 5180 + " Callers=" + Debug.getCallers(4)); 5181 mAdded = false; 5182 } 5183 WindowManagerGlobal.getInstance().doRemoveView(this); 5184 } 5185 5186 public void requestUpdateConfiguration(Configuration config) { 5187 Message msg = mHandler.obtainMessage(MSG_UPDATE_CONFIGURATION, config); 5188 mHandler.sendMessage(msg); 5189 } 5190 5191 public void loadSystemProperties() { 5192 mHandler.post(new Runnable() { 5193 @Override 5194 public void run() { 5195 // Profiling 5196 mProfileRendering = SystemProperties.getBoolean(PROPERTY_PROFILE_RENDERING, false); 5197 profileRendering(mAttachInfo.mHasWindowFocus); 5198 5199 // Media (used by sound effects) 5200 mMediaDisabled = SystemProperties.getBoolean(PROPERTY_MEDIA_DISABLED, false); 5201 5202 // Hardware rendering 5203 if (mAttachInfo.mHardwareRenderer != null) { 5204 if (mAttachInfo.mHardwareRenderer.loadSystemProperties(mHolder.getSurface())) { 5205 invalidate(); 5206 } 5207 } 5208 5209 // Layout debugging 5210 boolean layout = SystemProperties.getBoolean(View.DEBUG_LAYOUT_PROPERTY, false); 5211 if (layout != mAttachInfo.mDebugLayout) { 5212 mAttachInfo.mDebugLayout = layout; 5213 if (!mHandler.hasMessages(MSG_INVALIDATE_WORLD)) { 5214 mHandler.sendEmptyMessageDelayed(MSG_INVALIDATE_WORLD, 200); 5215 } 5216 } 5217 } 5218 }); 5219 } 5220 5221 private void destroyHardwareRenderer() { 5222 AttachInfo attachInfo = mAttachInfo; 5223 HardwareRenderer hardwareRenderer = attachInfo.mHardwareRenderer; 5224 5225 if (hardwareRenderer != null) { 5226 if (mView != null) { 5227 hardwareRenderer.destroyHardwareResources(mView); 5228 } 5229 hardwareRenderer.destroy(true); 5230 hardwareRenderer.setRequested(false); 5231 5232 attachInfo.mHardwareRenderer = null; 5233 attachInfo.mHardwareAccelerated = false; 5234 } 5235 } 5236 5237 public void dispatchFinishInputConnection(InputConnection connection) { 5238 Message msg = mHandler.obtainMessage(MSG_FINISH_INPUT_CONNECTION, connection); 5239 mHandler.sendMessage(msg); 5240 } 5241 5242 public void dispatchResized(Rect frame, Rect overscanInsets, Rect contentInsets, 5243 Rect visibleInsets, boolean reportDraw, Configuration newConfig) { 5244 if (DEBUG_LAYOUT) Log.v(TAG, "Resizing " + this + ": frame=" + frame.toShortString() 5245 + " contentInsets=" + contentInsets.toShortString() 5246 + " visibleInsets=" + visibleInsets.toShortString() 5247 + " reportDraw=" + reportDraw); 5248 Message msg = mHandler.obtainMessage(reportDraw ? MSG_RESIZED_REPORT : MSG_RESIZED); 5249 if (mTranslator != null) { 5250 mTranslator.translateRectInScreenToAppWindow(frame); 5251 mTranslator.translateRectInScreenToAppWindow(overscanInsets); 5252 mTranslator.translateRectInScreenToAppWindow(contentInsets); 5253 mTranslator.translateRectInScreenToAppWindow(visibleInsets); 5254 } 5255 SomeArgs args = SomeArgs.obtain(); 5256 final boolean sameProcessCall = (Binder.getCallingPid() == android.os.Process.myPid()); 5257 args.arg1 = sameProcessCall ? new Rect(frame) : frame; 5258 args.arg2 = sameProcessCall ? new Rect(contentInsets) : contentInsets; 5259 args.arg3 = sameProcessCall ? new Rect(visibleInsets) : visibleInsets; 5260 args.arg4 = sameProcessCall && newConfig != null ? new Configuration(newConfig) : newConfig; 5261 args.arg5 = sameProcessCall ? new Rect(overscanInsets) : overscanInsets; 5262 msg.obj = args; 5263 mHandler.sendMessage(msg); 5264 } 5265 5266 public void dispatchMoved(int newX, int newY) { 5267 if (DEBUG_LAYOUT) Log.v(TAG, "Window moved " + this + ": newX=" + newX + " newY=" + newY); 5268 if (mTranslator != null) { 5269 PointF point = new PointF(newX, newY); 5270 mTranslator.translatePointInScreenToAppWindow(point); 5271 newX = (int) (point.x + 0.5); 5272 newY = (int) (point.y + 0.5); 5273 } 5274 Message msg = mHandler.obtainMessage(MSG_WINDOW_MOVED, newX, newY); 5275 mHandler.sendMessage(msg); 5276 } 5277 5278 /** 5279 * Represents a pending input event that is waiting in a queue. 5280 * 5281 * Input events are processed in serial order by the timestamp specified by 5282 * {@link InputEvent#getEventTimeNano()}. In general, the input dispatcher delivers 5283 * one input event to the application at a time and waits for the application 5284 * to finish handling it before delivering the next one. 5285 * 5286 * However, because the application or IME can synthesize and inject multiple 5287 * key events at a time without going through the input dispatcher, we end up 5288 * needing a queue on the application's side. 5289 */ 5290 private static final class QueuedInputEvent { 5291 public static final int FLAG_DELIVER_POST_IME = 1 << 0; 5292 public static final int FLAG_DEFERRED = 1 << 1; 5293 public static final int FLAG_FINISHED = 1 << 2; 5294 public static final int FLAG_FINISHED_HANDLED = 1 << 3; 5295 public static final int FLAG_RESYNTHESIZED = 1 << 4; 5296 5297 public QueuedInputEvent mNext; 5298 5299 public InputEvent mEvent; 5300 public InputEventReceiver mReceiver; 5301 public int mFlags; 5302 5303 public boolean shouldSkipIme() { 5304 if ((mFlags & FLAG_DELIVER_POST_IME) != 0) { 5305 return true; 5306 } 5307 return mEvent instanceof MotionEvent 5308 && mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER); 5309 } 5310 } 5311 5312 private QueuedInputEvent obtainQueuedInputEvent(InputEvent event, 5313 InputEventReceiver receiver, int flags) { 5314 QueuedInputEvent q = mQueuedInputEventPool; 5315 if (q != null) { 5316 mQueuedInputEventPoolSize -= 1; 5317 mQueuedInputEventPool = q.mNext; 5318 q.mNext = null; 5319 } else { 5320 q = new QueuedInputEvent(); 5321 } 5322 5323 q.mEvent = event; 5324 q.mReceiver = receiver; 5325 q.mFlags = flags; 5326 return q; 5327 } 5328 5329 private void recycleQueuedInputEvent(QueuedInputEvent q) { 5330 q.mEvent = null; 5331 q.mReceiver = null; 5332 5333 if (mQueuedInputEventPoolSize < MAX_QUEUED_INPUT_EVENT_POOL_SIZE) { 5334 mQueuedInputEventPoolSize += 1; 5335 q.mNext = mQueuedInputEventPool; 5336 mQueuedInputEventPool = q; 5337 } 5338 } 5339 5340 void enqueueInputEvent(InputEvent event) { 5341 enqueueInputEvent(event, null, 0, false); 5342 } 5343 5344 void enqueueInputEvent(InputEvent event, 5345 InputEventReceiver receiver, int flags, boolean processImmediately) { 5346 QueuedInputEvent q = obtainQueuedInputEvent(event, receiver, flags); 5347 5348 // Always enqueue the input event in order, regardless of its time stamp. 5349 // We do this because the application or the IME may inject key events 5350 // in response to touch events and we want to ensure that the injected keys 5351 // are processed in the order they were received and we cannot trust that 5352 // the time stamp of injected events are monotonic. 5353 QueuedInputEvent last = mPendingInputEventTail; 5354 if (last == null) { 5355 mPendingInputEventHead = q; 5356 mPendingInputEventTail = q; 5357 } else { 5358 last.mNext = q; 5359 mPendingInputEventTail = q; 5360 } 5361 mPendingInputEventCount += 1; 5362 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 5363 mPendingInputEventCount); 5364 5365 if (processImmediately) { 5366 doProcessInputEvents(); 5367 } else { 5368 scheduleProcessInputEvents(); 5369 } 5370 } 5371 5372 private void scheduleProcessInputEvents() { 5373 if (!mProcessInputEventsScheduled) { 5374 mProcessInputEventsScheduled = true; 5375 Message msg = mHandler.obtainMessage(MSG_PROCESS_INPUT_EVENTS); 5376 msg.setAsynchronous(true); 5377 mHandler.sendMessage(msg); 5378 } 5379 } 5380 5381 void doProcessInputEvents() { 5382 // Deliver all pending input events in the queue. 5383 while (mPendingInputEventHead != null) { 5384 QueuedInputEvent q = mPendingInputEventHead; 5385 mPendingInputEventHead = q.mNext; 5386 if (mPendingInputEventHead == null) { 5387 mPendingInputEventTail = null; 5388 } 5389 q.mNext = null; 5390 5391 mPendingInputEventCount -= 1; 5392 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 5393 mPendingInputEventCount); 5394 5395 deliverInputEvent(q); 5396 } 5397 5398 // We are done processing all input events that we can process right now 5399 // so we can clear the pending flag immediately. 5400 if (mProcessInputEventsScheduled) { 5401 mProcessInputEventsScheduled = false; 5402 mHandler.removeMessages(MSG_PROCESS_INPUT_EVENTS); 5403 } 5404 } 5405 5406 private void deliverInputEvent(QueuedInputEvent q) { 5407 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "deliverInputEvent"); 5408 try { 5409 if (mInputEventConsistencyVerifier != null) { 5410 mInputEventConsistencyVerifier.onInputEvent(q.mEvent, 0); 5411 } 5412 5413 InputStage stage = q.shouldSkipIme() ? mFirstPostImeInputStage : mFirstInputStage; 5414 if (stage != null) { 5415 stage.deliver(q); 5416 } else { 5417 finishInputEvent(q); 5418 } 5419 } finally { 5420 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 5421 } 5422 } 5423 5424 private void finishInputEvent(QueuedInputEvent q) { 5425 if (q.mReceiver != null) { 5426 boolean handled = (q.mFlags & QueuedInputEvent.FLAG_FINISHED_HANDLED) != 0; 5427 q.mReceiver.finishInputEvent(q.mEvent, handled); 5428 } else { 5429 q.mEvent.recycleIfNeededAfterDispatch(); 5430 } 5431 5432 recycleQueuedInputEvent(q); 5433 } 5434 5435 static boolean isTerminalInputEvent(InputEvent event) { 5436 if (event instanceof KeyEvent) { 5437 final KeyEvent keyEvent = (KeyEvent)event; 5438 return keyEvent.getAction() == KeyEvent.ACTION_UP; 5439 } else { 5440 final MotionEvent motionEvent = (MotionEvent)event; 5441 final int action = motionEvent.getAction(); 5442 return action == MotionEvent.ACTION_UP 5443 || action == MotionEvent.ACTION_CANCEL 5444 || action == MotionEvent.ACTION_HOVER_EXIT; 5445 } 5446 } 5447 5448 void scheduleConsumeBatchedInput() { 5449 if (!mConsumeBatchedInputScheduled) { 5450 mConsumeBatchedInputScheduled = true; 5451 mChoreographer.postCallback(Choreographer.CALLBACK_INPUT, 5452 mConsumedBatchedInputRunnable, null); 5453 } 5454 } 5455 5456 void unscheduleConsumeBatchedInput() { 5457 if (mConsumeBatchedInputScheduled) { 5458 mConsumeBatchedInputScheduled = false; 5459 mChoreographer.removeCallbacks(Choreographer.CALLBACK_INPUT, 5460 mConsumedBatchedInputRunnable, null); 5461 } 5462 } 5463 5464 void doConsumeBatchedInput(long frameTimeNanos) { 5465 if (mConsumeBatchedInputScheduled) { 5466 mConsumeBatchedInputScheduled = false; 5467 if (mInputEventReceiver != null) { 5468 mInputEventReceiver.consumeBatchedInputEvents(frameTimeNanos); 5469 } 5470 doProcessInputEvents(); 5471 } 5472 } 5473 5474 final class TraversalRunnable implements Runnable { 5475 @Override 5476 public void run() { 5477 doTraversal(); 5478 } 5479 } 5480 final TraversalRunnable mTraversalRunnable = new TraversalRunnable(); 5481 5482 final class WindowInputEventReceiver extends InputEventReceiver { 5483 public WindowInputEventReceiver(InputChannel inputChannel, Looper looper) { 5484 super(inputChannel, looper); 5485 } 5486 5487 @Override 5488 public void onInputEvent(InputEvent event) { 5489 enqueueInputEvent(event, this, 0, true); 5490 } 5491 5492 @Override 5493 public void onBatchedInputEventPending() { 5494 scheduleConsumeBatchedInput(); 5495 } 5496 5497 @Override 5498 public void dispose() { 5499 unscheduleConsumeBatchedInput(); 5500 super.dispose(); 5501 } 5502 } 5503 WindowInputEventReceiver mInputEventReceiver; 5504 5505 final class ConsumeBatchedInputRunnable implements Runnable { 5506 @Override 5507 public void run() { 5508 doConsumeBatchedInput(mChoreographer.getFrameTimeNanos()); 5509 } 5510 } 5511 final ConsumeBatchedInputRunnable mConsumedBatchedInputRunnable = 5512 new ConsumeBatchedInputRunnable(); 5513 boolean mConsumeBatchedInputScheduled; 5514 5515 final class InvalidateOnAnimationRunnable implements Runnable { 5516 private boolean mPosted; 5517 private ArrayList<View> mViews = new ArrayList<View>(); 5518 private ArrayList<AttachInfo.InvalidateInfo> mViewRects = 5519 new ArrayList<AttachInfo.InvalidateInfo>(); 5520 private View[] mTempViews; 5521 private AttachInfo.InvalidateInfo[] mTempViewRects; 5522 5523 public void addView(View view) { 5524 synchronized (this) { 5525 mViews.add(view); 5526 postIfNeededLocked(); 5527 } 5528 } 5529 5530 public void addViewRect(AttachInfo.InvalidateInfo info) { 5531 synchronized (this) { 5532 mViewRects.add(info); 5533 postIfNeededLocked(); 5534 } 5535 } 5536 5537 public void removeView(View view) { 5538 synchronized (this) { 5539 mViews.remove(view); 5540 5541 for (int i = mViewRects.size(); i-- > 0; ) { 5542 AttachInfo.InvalidateInfo info = mViewRects.get(i); 5543 if (info.target == view) { 5544 mViewRects.remove(i); 5545 info.recycle(); 5546 } 5547 } 5548 5549 if (mPosted && mViews.isEmpty() && mViewRects.isEmpty()) { 5550 mChoreographer.removeCallbacks(Choreographer.CALLBACK_ANIMATION, this, null); 5551 mPosted = false; 5552 } 5553 } 5554 } 5555 5556 @Override 5557 public void run() { 5558 final int viewCount; 5559 final int viewRectCount; 5560 synchronized (this) { 5561 mPosted = false; 5562 5563 viewCount = mViews.size(); 5564 if (viewCount != 0) { 5565 mTempViews = mViews.toArray(mTempViews != null 5566 ? mTempViews : new View[viewCount]); 5567 mViews.clear(); 5568 } 5569 5570 viewRectCount = mViewRects.size(); 5571 if (viewRectCount != 0) { 5572 mTempViewRects = mViewRects.toArray(mTempViewRects != null 5573 ? mTempViewRects : new AttachInfo.InvalidateInfo[viewRectCount]); 5574 mViewRects.clear(); 5575 } 5576 } 5577 5578 for (int i = 0; i < viewCount; i++) { 5579 mTempViews[i].invalidate(); 5580 mTempViews[i] = null; 5581 } 5582 5583 for (int i = 0; i < viewRectCount; i++) { 5584 final View.AttachInfo.InvalidateInfo info = mTempViewRects[i]; 5585 info.target.invalidate(info.left, info.top, info.right, info.bottom); 5586 info.recycle(); 5587 } 5588 } 5589 5590 private void postIfNeededLocked() { 5591 if (!mPosted) { 5592 mChoreographer.postCallback(Choreographer.CALLBACK_ANIMATION, this, null); 5593 mPosted = true; 5594 } 5595 } 5596 } 5597 final InvalidateOnAnimationRunnable mInvalidateOnAnimationRunnable = 5598 new InvalidateOnAnimationRunnable(); 5599 5600 public void dispatchInvalidateDelayed(View view, long delayMilliseconds) { 5601 Message msg = mHandler.obtainMessage(MSG_INVALIDATE, view); 5602 mHandler.sendMessageDelayed(msg, delayMilliseconds); 5603 } 5604 5605 public void dispatchInvalidateRectDelayed(AttachInfo.InvalidateInfo info, 5606 long delayMilliseconds) { 5607 final Message msg = mHandler.obtainMessage(MSG_INVALIDATE_RECT, info); 5608 mHandler.sendMessageDelayed(msg, delayMilliseconds); 5609 } 5610 5611 public void dispatchInvalidateOnAnimation(View view) { 5612 mInvalidateOnAnimationRunnable.addView(view); 5613 } 5614 5615 public void dispatchInvalidateRectOnAnimation(AttachInfo.InvalidateInfo info) { 5616 mInvalidateOnAnimationRunnable.addViewRect(info); 5617 } 5618 5619 public void enqueueDisplayList(DisplayList displayList) { 5620 mDisplayLists.add(displayList); 5621 } 5622 5623 public void cancelInvalidate(View view) { 5624 mHandler.removeMessages(MSG_INVALIDATE, view); 5625 // fixme: might leak the AttachInfo.InvalidateInfo objects instead of returning 5626 // them to the pool 5627 mHandler.removeMessages(MSG_INVALIDATE_RECT, view); 5628 mInvalidateOnAnimationRunnable.removeView(view); 5629 } 5630 5631 public void dispatchKey(KeyEvent event) { 5632 Message msg = mHandler.obtainMessage(MSG_DISPATCH_KEY, event); 5633 msg.setAsynchronous(true); 5634 mHandler.sendMessage(msg); 5635 } 5636 5637 public void dispatchKeyFromIme(KeyEvent event) { 5638 Message msg = mHandler.obtainMessage(MSG_DISPATCH_KEY_FROM_IME, event); 5639 msg.setAsynchronous(true); 5640 mHandler.sendMessage(msg); 5641 } 5642 5643 public void dispatchUnhandledKey(KeyEvent event) { 5644 if ((event.getFlags() & KeyEvent.FLAG_FALLBACK) == 0) { 5645 final KeyCharacterMap kcm = event.getKeyCharacterMap(); 5646 final int keyCode = event.getKeyCode(); 5647 final int metaState = event.getMetaState(); 5648 5649 // Check for fallback actions specified by the key character map. 5650 KeyCharacterMap.FallbackAction fallbackAction = 5651 kcm.getFallbackAction(keyCode, metaState); 5652 if (fallbackAction != null) { 5653 final int flags = event.getFlags() | KeyEvent.FLAG_FALLBACK; 5654 KeyEvent fallbackEvent = KeyEvent.obtain( 5655 event.getDownTime(), event.getEventTime(), 5656 event.getAction(), fallbackAction.keyCode, 5657 event.getRepeatCount(), fallbackAction.metaState, 5658 event.getDeviceId(), event.getScanCode(), 5659 flags, event.getSource(), null); 5660 fallbackAction.recycle(); 5661 5662 dispatchKey(fallbackEvent); 5663 } 5664 } 5665 } 5666 5667 public void dispatchAppVisibility(boolean visible) { 5668 Message msg = mHandler.obtainMessage(MSG_DISPATCH_APP_VISIBILITY); 5669 msg.arg1 = visible ? 1 : 0; 5670 mHandler.sendMessage(msg); 5671 } 5672 5673 public void dispatchScreenStateChange(boolean on) { 5674 Message msg = mHandler.obtainMessage(MSG_DISPATCH_SCREEN_STATE); 5675 msg.arg1 = on ? 1 : 0; 5676 mHandler.sendMessage(msg); 5677 } 5678 5679 public void dispatchGetNewSurface() { 5680 Message msg = mHandler.obtainMessage(MSG_DISPATCH_GET_NEW_SURFACE); 5681 mHandler.sendMessage(msg); 5682 } 5683 5684 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 5685 Message msg = Message.obtain(); 5686 msg.what = MSG_WINDOW_FOCUS_CHANGED; 5687 msg.arg1 = hasFocus ? 1 : 0; 5688 msg.arg2 = inTouchMode ? 1 : 0; 5689 mHandler.sendMessage(msg); 5690 } 5691 5692 public void dispatchCloseSystemDialogs(String reason) { 5693 Message msg = Message.obtain(); 5694 msg.what = MSG_CLOSE_SYSTEM_DIALOGS; 5695 msg.obj = reason; 5696 mHandler.sendMessage(msg); 5697 } 5698 5699 public void dispatchDragEvent(DragEvent event) { 5700 final int what; 5701 if (event.getAction() == DragEvent.ACTION_DRAG_LOCATION) { 5702 what = MSG_DISPATCH_DRAG_LOCATION_EVENT; 5703 mHandler.removeMessages(what); 5704 } else { 5705 what = MSG_DISPATCH_DRAG_EVENT; 5706 } 5707 Message msg = mHandler.obtainMessage(what, event); 5708 mHandler.sendMessage(msg); 5709 } 5710 5711 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 5712 int localValue, int localChanges) { 5713 SystemUiVisibilityInfo args = new SystemUiVisibilityInfo(); 5714 args.seq = seq; 5715 args.globalVisibility = globalVisibility; 5716 args.localValue = localValue; 5717 args.localChanges = localChanges; 5718 mHandler.sendMessage(mHandler.obtainMessage(MSG_DISPATCH_SYSTEM_UI_VISIBILITY, args)); 5719 } 5720 5721 public void dispatchDoneAnimating() { 5722 mHandler.sendEmptyMessage(MSG_DISPATCH_DONE_ANIMATING); 5723 } 5724 5725 public void dispatchCheckFocus() { 5726 if (!mHandler.hasMessages(MSG_CHECK_FOCUS)) { 5727 // This will result in a call to checkFocus() below. 5728 mHandler.sendEmptyMessage(MSG_CHECK_FOCUS); 5729 } 5730 } 5731 5732 /** 5733 * Post a callback to send a 5734 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 5735 * This event is send at most once every 5736 * {@link ViewConfiguration#getSendRecurringAccessibilityEventsInterval()}. 5737 */ 5738 private void postSendWindowContentChangedCallback(View source) { 5739 if (mSendWindowContentChangedAccessibilityEvent == null) { 5740 mSendWindowContentChangedAccessibilityEvent = 5741 new SendWindowContentChangedAccessibilityEvent(); 5742 } 5743 mSendWindowContentChangedAccessibilityEvent.runOrPost(source); 5744 } 5745 5746 /** 5747 * Remove a posted callback to send a 5748 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 5749 */ 5750 private void removeSendWindowContentChangedCallback() { 5751 if (mSendWindowContentChangedAccessibilityEvent != null) { 5752 mHandler.removeCallbacks(mSendWindowContentChangedAccessibilityEvent); 5753 } 5754 } 5755 5756 public boolean showContextMenuForChild(View originalView) { 5757 return false; 5758 } 5759 5760 public ActionMode startActionModeForChild(View originalView, ActionMode.Callback callback) { 5761 return null; 5762 } 5763 5764 public void createContextMenu(ContextMenu menu) { 5765 } 5766 5767 public void childDrawableStateChanged(View child) { 5768 } 5769 5770 public boolean requestSendAccessibilityEvent(View child, AccessibilityEvent event) { 5771 if (mView == null) { 5772 return false; 5773 } 5774 // Intercept accessibility focus events fired by virtual nodes to keep 5775 // track of accessibility focus position in such nodes. 5776 final int eventType = event.getEventType(); 5777 switch (eventType) { 5778 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUSED: { 5779 final long sourceNodeId = event.getSourceNodeId(); 5780 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 5781 sourceNodeId); 5782 View source = mView.findViewByAccessibilityId(accessibilityViewId); 5783 if (source != null) { 5784 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 5785 if (provider != null) { 5786 AccessibilityNodeInfo node = provider.createAccessibilityNodeInfo( 5787 AccessibilityNodeInfo.getVirtualDescendantId(sourceNodeId)); 5788 setAccessibilityFocus(source, node); 5789 } 5790 } 5791 } break; 5792 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUS_CLEARED: { 5793 final long sourceNodeId = event.getSourceNodeId(); 5794 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 5795 sourceNodeId); 5796 View source = mView.findViewByAccessibilityId(accessibilityViewId); 5797 if (source != null) { 5798 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 5799 if (provider != null) { 5800 setAccessibilityFocus(null, null); 5801 } 5802 } 5803 } break; 5804 } 5805 mAccessibilityManager.sendAccessibilityEvent(event); 5806 return true; 5807 } 5808 5809 @Override 5810 public void childAccessibilityStateChanged(View child) { 5811 postSendWindowContentChangedCallback(child); 5812 } 5813 5814 @Override 5815 public boolean canResolveLayoutDirection() { 5816 return true; 5817 } 5818 5819 @Override 5820 public boolean isLayoutDirectionResolved() { 5821 return true; 5822 } 5823 5824 @Override 5825 public int getLayoutDirection() { 5826 return View.LAYOUT_DIRECTION_RESOLVED_DEFAULT; 5827 } 5828 5829 @Override 5830 public boolean canResolveTextDirection() { 5831 return true; 5832 } 5833 5834 @Override 5835 public boolean isTextDirectionResolved() { 5836 return true; 5837 } 5838 5839 @Override 5840 public int getTextDirection() { 5841 return View.TEXT_DIRECTION_RESOLVED_DEFAULT; 5842 } 5843 5844 @Override 5845 public boolean canResolveTextAlignment() { 5846 return true; 5847 } 5848 5849 @Override 5850 public boolean isTextAlignmentResolved() { 5851 return true; 5852 } 5853 5854 @Override 5855 public int getTextAlignment() { 5856 return View.TEXT_ALIGNMENT_RESOLVED_DEFAULT; 5857 } 5858 5859 private View getCommonPredecessor(View first, View second) { 5860 if (mAttachInfo != null) { 5861 if (mTempHashSet == null) { 5862 mTempHashSet = new HashSet<View>(); 5863 } 5864 HashSet<View> seen = mTempHashSet; 5865 seen.clear(); 5866 View firstCurrent = first; 5867 while (firstCurrent != null) { 5868 seen.add(firstCurrent); 5869 ViewParent firstCurrentParent = firstCurrent.mParent; 5870 if (firstCurrentParent instanceof View) { 5871 firstCurrent = (View) firstCurrentParent; 5872 } else { 5873 firstCurrent = null; 5874 } 5875 } 5876 View secondCurrent = second; 5877 while (secondCurrent != null) { 5878 if (seen.contains(secondCurrent)) { 5879 seen.clear(); 5880 return secondCurrent; 5881 } 5882 ViewParent secondCurrentParent = secondCurrent.mParent; 5883 if (secondCurrentParent instanceof View) { 5884 secondCurrent = (View) secondCurrentParent; 5885 } else { 5886 secondCurrent = null; 5887 } 5888 } 5889 seen.clear(); 5890 } 5891 return null; 5892 } 5893 5894 void checkThread() { 5895 if (mThread != Thread.currentThread()) { 5896 throw new CalledFromWrongThreadException( 5897 "Only the original thread that created a view hierarchy can touch its views."); 5898 } 5899 } 5900 5901 public void requestDisallowInterceptTouchEvent(boolean disallowIntercept) { 5902 // ViewAncestor never intercepts touch event, so this can be a no-op 5903 } 5904 5905 public boolean requestChildRectangleOnScreen(View child, Rect rectangle, boolean immediate) { 5906 final boolean scrolled = scrollToRectOrFocus(rectangle, immediate); 5907 if (rectangle != null) { 5908 mTempRect.set(rectangle); 5909 mTempRect.offset(0, -mCurScrollY); 5910 mTempRect.offset(mAttachInfo.mWindowLeft, mAttachInfo.mWindowTop); 5911 try { 5912 mWindowSession.onRectangleOnScreenRequested(mWindow, mTempRect, immediate); 5913 } catch (RemoteException re) { 5914 /* ignore */ 5915 } 5916 } 5917 return scrolled; 5918 } 5919 5920 public void childHasTransientStateChanged(View child, boolean hasTransientState) { 5921 // Do nothing. 5922 } 5923 5924 class TakenSurfaceHolder extends BaseSurfaceHolder { 5925 @Override 5926 public boolean onAllowLockCanvas() { 5927 return mDrawingAllowed; 5928 } 5929 5930 @Override 5931 public void onRelayoutContainer() { 5932 // Not currently interesting -- from changing between fixed and layout size. 5933 } 5934 5935 public void setFormat(int format) { 5936 ((RootViewSurfaceTaker)mView).setSurfaceFormat(format); 5937 } 5938 5939 public void setType(int type) { 5940 ((RootViewSurfaceTaker)mView).setSurfaceType(type); 5941 } 5942 5943 @Override 5944 public void onUpdateSurface() { 5945 // We take care of format and type changes on our own. 5946 throw new IllegalStateException("Shouldn't be here"); 5947 } 5948 5949 public boolean isCreating() { 5950 return mIsCreating; 5951 } 5952 5953 @Override 5954 public void setFixedSize(int width, int height) { 5955 throw new UnsupportedOperationException( 5956 "Currently only support sizing from layout"); 5957 } 5958 5959 public void setKeepScreenOn(boolean screenOn) { 5960 ((RootViewSurfaceTaker)mView).setSurfaceKeepScreenOn(screenOn); 5961 } 5962 } 5963 5964 static class W extends IWindow.Stub { 5965 private final WeakReference<ViewRootImpl> mViewAncestor; 5966 private final IWindowSession mWindowSession; 5967 5968 W(ViewRootImpl viewAncestor) { 5969 mViewAncestor = new WeakReference<ViewRootImpl>(viewAncestor); 5970 mWindowSession = viewAncestor.mWindowSession; 5971 } 5972 5973 public void resized(Rect frame, Rect overscanInsets, Rect contentInsets, 5974 Rect visibleInsets, boolean reportDraw, Configuration newConfig) { 5975 final ViewRootImpl viewAncestor = mViewAncestor.get(); 5976 if (viewAncestor != null) { 5977 viewAncestor.dispatchResized(frame, overscanInsets, contentInsets, 5978 visibleInsets, reportDraw, newConfig); 5979 } 5980 } 5981 5982 @Override 5983 public void moved(int newX, int newY) { 5984 final ViewRootImpl viewAncestor = mViewAncestor.get(); 5985 if (viewAncestor != null) { 5986 viewAncestor.dispatchMoved(newX, newY); 5987 } 5988 } 5989 5990 public void dispatchAppVisibility(boolean visible) { 5991 final ViewRootImpl viewAncestor = mViewAncestor.get(); 5992 if (viewAncestor != null) { 5993 viewAncestor.dispatchAppVisibility(visible); 5994 } 5995 } 5996 5997 public void dispatchScreenState(boolean on) { 5998 final ViewRootImpl viewAncestor = mViewAncestor.get(); 5999 if (viewAncestor != null) { 6000 viewAncestor.dispatchScreenStateChange(on); 6001 } 6002 } 6003 6004 public void dispatchGetNewSurface() { 6005 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6006 if (viewAncestor != null) { 6007 viewAncestor.dispatchGetNewSurface(); 6008 } 6009 } 6010 6011 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 6012 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6013 if (viewAncestor != null) { 6014 viewAncestor.windowFocusChanged(hasFocus, inTouchMode); 6015 } 6016 } 6017 6018 private static int checkCallingPermission(String permission) { 6019 try { 6020 return ActivityManagerNative.getDefault().checkPermission( 6021 permission, Binder.getCallingPid(), Binder.getCallingUid()); 6022 } catch (RemoteException e) { 6023 return PackageManager.PERMISSION_DENIED; 6024 } 6025 } 6026 6027 public void executeCommand(String command, String parameters, ParcelFileDescriptor out) { 6028 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6029 if (viewAncestor != null) { 6030 final View view = viewAncestor.mView; 6031 if (view != null) { 6032 if (checkCallingPermission(Manifest.permission.DUMP) != 6033 PackageManager.PERMISSION_GRANTED) { 6034 throw new SecurityException("Insufficient permissions to invoke" 6035 + " executeCommand() from pid=" + Binder.getCallingPid() 6036 + ", uid=" + Binder.getCallingUid()); 6037 } 6038 6039 OutputStream clientStream = null; 6040 try { 6041 clientStream = new ParcelFileDescriptor.AutoCloseOutputStream(out); 6042 ViewDebug.dispatchCommand(view, command, parameters, clientStream); 6043 } catch (IOException e) { 6044 e.printStackTrace(); 6045 } finally { 6046 if (clientStream != null) { 6047 try { 6048 clientStream.close(); 6049 } catch (IOException e) { 6050 e.printStackTrace(); 6051 } 6052 } 6053 } 6054 } 6055 } 6056 } 6057 6058 public void closeSystemDialogs(String reason) { 6059 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6060 if (viewAncestor != null) { 6061 viewAncestor.dispatchCloseSystemDialogs(reason); 6062 } 6063 } 6064 6065 public void dispatchWallpaperOffsets(float x, float y, float xStep, float yStep, 6066 boolean sync) { 6067 if (sync) { 6068 try { 6069 mWindowSession.wallpaperOffsetsComplete(asBinder()); 6070 } catch (RemoteException e) { 6071 } 6072 } 6073 } 6074 6075 public void dispatchWallpaperCommand(String action, int x, int y, 6076 int z, Bundle extras, boolean sync) { 6077 if (sync) { 6078 try { 6079 mWindowSession.wallpaperCommandComplete(asBinder(), null); 6080 } catch (RemoteException e) { 6081 } 6082 } 6083 } 6084 6085 /* Drag/drop */ 6086 public void dispatchDragEvent(DragEvent event) { 6087 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6088 if (viewAncestor != null) { 6089 viewAncestor.dispatchDragEvent(event); 6090 } 6091 } 6092 6093 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 6094 int localValue, int localChanges) { 6095 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6096 if (viewAncestor != null) { 6097 viewAncestor.dispatchSystemUiVisibilityChanged(seq, globalVisibility, 6098 localValue, localChanges); 6099 } 6100 } 6101 6102 public void doneAnimating() { 6103 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6104 if (viewAncestor != null) { 6105 viewAncestor.dispatchDoneAnimating(); 6106 } 6107 } 6108 } 6109 6110 public static final class CalledFromWrongThreadException extends AndroidRuntimeException { 6111 public CalledFromWrongThreadException(String msg) { 6112 super(msg); 6113 } 6114 } 6115 6116 private SurfaceHolder mHolder = new SurfaceHolder() { 6117 // we only need a SurfaceHolder for opengl. it would be nice 6118 // to implement everything else though, especially the callback 6119 // support (opengl doesn't make use of it right now, but eventually 6120 // will). 6121 public Surface getSurface() { 6122 return mSurface; 6123 } 6124 6125 public boolean isCreating() { 6126 return false; 6127 } 6128 6129 public void addCallback(Callback callback) { 6130 } 6131 6132 public void removeCallback(Callback callback) { 6133 } 6134 6135 public void setFixedSize(int width, int height) { 6136 } 6137 6138 public void setSizeFromLayout() { 6139 } 6140 6141 public void setFormat(int format) { 6142 } 6143 6144 public void setType(int type) { 6145 } 6146 6147 public void setKeepScreenOn(boolean screenOn) { 6148 } 6149 6150 public Canvas lockCanvas() { 6151 return null; 6152 } 6153 6154 public Canvas lockCanvas(Rect dirty) { 6155 return null; 6156 } 6157 6158 public void unlockCanvasAndPost(Canvas canvas) { 6159 } 6160 public Rect getSurfaceFrame() { 6161 return null; 6162 } 6163 }; 6164 6165 static RunQueue getRunQueue() { 6166 RunQueue rq = sRunQueues.get(); 6167 if (rq != null) { 6168 return rq; 6169 } 6170 rq = new RunQueue(); 6171 sRunQueues.set(rq); 6172 return rq; 6173 } 6174 6175 /** 6176 * The run queue is used to enqueue pending work from Views when no Handler is 6177 * attached. The work is executed during the next call to performTraversals on 6178 * the thread. 6179 * @hide 6180 */ 6181 static final class RunQueue { 6182 private final ArrayList<HandlerAction> mActions = new ArrayList<HandlerAction>(); 6183 6184 void post(Runnable action) { 6185 postDelayed(action, 0); 6186 } 6187 6188 void postDelayed(Runnable action, long delayMillis) { 6189 HandlerAction handlerAction = new HandlerAction(); 6190 handlerAction.action = action; 6191 handlerAction.delay = delayMillis; 6192 6193 synchronized (mActions) { 6194 mActions.add(handlerAction); 6195 } 6196 } 6197 6198 void removeCallbacks(Runnable action) { 6199 final HandlerAction handlerAction = new HandlerAction(); 6200 handlerAction.action = action; 6201 6202 synchronized (mActions) { 6203 final ArrayList<HandlerAction> actions = mActions; 6204 6205 while (actions.remove(handlerAction)) { 6206 // Keep going 6207 } 6208 } 6209 } 6210 6211 void executeActions(Handler handler) { 6212 synchronized (mActions) { 6213 final ArrayList<HandlerAction> actions = mActions; 6214 final int count = actions.size(); 6215 6216 for (int i = 0; i < count; i++) { 6217 final HandlerAction handlerAction = actions.get(i); 6218 handler.postDelayed(handlerAction.action, handlerAction.delay); 6219 } 6220 6221 actions.clear(); 6222 } 6223 } 6224 6225 private static class HandlerAction { 6226 Runnable action; 6227 long delay; 6228 6229 @Override 6230 public boolean equals(Object o) { 6231 if (this == o) return true; 6232 if (o == null || getClass() != o.getClass()) return false; 6233 6234 HandlerAction that = (HandlerAction) o; 6235 return !(action != null ? !action.equals(that.action) : that.action != null); 6236 6237 } 6238 6239 @Override 6240 public int hashCode() { 6241 int result = action != null ? action.hashCode() : 0; 6242 result = 31 * result + (int) (delay ^ (delay >>> 32)); 6243 return result; 6244 } 6245 } 6246 } 6247 6248 /** 6249 * Class for managing the accessibility interaction connection 6250 * based on the global accessibility state. 6251 */ 6252 final class AccessibilityInteractionConnectionManager 6253 implements AccessibilityStateChangeListener { 6254 public void onAccessibilityStateChanged(boolean enabled) { 6255 if (enabled) { 6256 ensureConnection(); 6257 if (mAttachInfo != null && mAttachInfo.mHasWindowFocus) { 6258 mView.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 6259 View focusedView = mView.findFocus(); 6260 if (focusedView != null && focusedView != mView) { 6261 focusedView.sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_FOCUSED); 6262 } 6263 } 6264 } else { 6265 ensureNoConnection(); 6266 mHandler.obtainMessage(MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST).sendToTarget(); 6267 } 6268 } 6269 6270 public void ensureConnection() { 6271 if (mAttachInfo != null) { 6272 final boolean registered = 6273 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED; 6274 if (!registered) { 6275 mAttachInfo.mAccessibilityWindowId = 6276 mAccessibilityManager.addAccessibilityInteractionConnection(mWindow, 6277 new AccessibilityInteractionConnection(ViewRootImpl.this)); 6278 } 6279 } 6280 } 6281 6282 public void ensureNoConnection() { 6283 final boolean registered = 6284 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED; 6285 if (registered) { 6286 mAttachInfo.mAccessibilityWindowId = AccessibilityNodeInfo.UNDEFINED; 6287 mAccessibilityManager.removeAccessibilityInteractionConnection(mWindow); 6288 } 6289 } 6290 } 6291 6292 /** 6293 * This class is an interface this ViewAncestor provides to the 6294 * AccessibilityManagerService to the latter can interact with 6295 * the view hierarchy in this ViewAncestor. 6296 */ 6297 static final class AccessibilityInteractionConnection 6298 extends IAccessibilityInteractionConnection.Stub { 6299 private final WeakReference<ViewRootImpl> mViewRootImpl; 6300 6301 AccessibilityInteractionConnection(ViewRootImpl viewRootImpl) { 6302 mViewRootImpl = new WeakReference<ViewRootImpl>(viewRootImpl); 6303 } 6304 6305 @Override 6306 public void findAccessibilityNodeInfoByAccessibilityId(long accessibilityNodeId, 6307 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 6308 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6309 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6310 if (viewRootImpl != null && viewRootImpl.mView != null) { 6311 viewRootImpl.getAccessibilityInteractionController() 6312 .findAccessibilityNodeInfoByAccessibilityIdClientThread(accessibilityNodeId, 6313 interactionId, callback, flags, interrogatingPid, interrogatingTid, 6314 spec); 6315 } else { 6316 // We cannot make the call and notify the caller so it does not wait. 6317 try { 6318 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 6319 } catch (RemoteException re) { 6320 /* best effort - ignore */ 6321 } 6322 } 6323 } 6324 6325 @Override 6326 public void performAccessibilityAction(long accessibilityNodeId, int action, 6327 Bundle arguments, int interactionId, 6328 IAccessibilityInteractionConnectionCallback callback, int flags, 6329 int interogatingPid, long interrogatingTid) { 6330 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6331 if (viewRootImpl != null && viewRootImpl.mView != null) { 6332 viewRootImpl.getAccessibilityInteractionController() 6333 .performAccessibilityActionClientThread(accessibilityNodeId, action, arguments, 6334 interactionId, callback, flags, interogatingPid, interrogatingTid); 6335 } else { 6336 // We cannot make the call and notify the caller so it does not wait. 6337 try { 6338 callback.setPerformAccessibilityActionResult(false, interactionId); 6339 } catch (RemoteException re) { 6340 /* best effort - ignore */ 6341 } 6342 } 6343 } 6344 6345 @Override 6346 public void findAccessibilityNodeInfosByViewId(long accessibilityNodeId, 6347 String viewId, int interactionId, 6348 IAccessibilityInteractionConnectionCallback callback, int flags, 6349 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6350 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6351 if (viewRootImpl != null && viewRootImpl.mView != null) { 6352 viewRootImpl.getAccessibilityInteractionController() 6353 .findAccessibilityNodeInfosByViewIdClientThread(accessibilityNodeId, 6354 viewId, interactionId, callback, flags, interrogatingPid, 6355 interrogatingTid, spec); 6356 } else { 6357 // We cannot make the call and notify the caller so it does not wait. 6358 try { 6359 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6360 } catch (RemoteException re) { 6361 /* best effort - ignore */ 6362 } 6363 } 6364 } 6365 6366 @Override 6367 public void findAccessibilityNodeInfosByText(long accessibilityNodeId, String text, 6368 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 6369 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6370 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6371 if (viewRootImpl != null && viewRootImpl.mView != null) { 6372 viewRootImpl.getAccessibilityInteractionController() 6373 .findAccessibilityNodeInfosByTextClientThread(accessibilityNodeId, text, 6374 interactionId, callback, flags, interrogatingPid, interrogatingTid, 6375 spec); 6376 } else { 6377 // We cannot make the call and notify the caller so it does not wait. 6378 try { 6379 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 6380 } catch (RemoteException re) { 6381 /* best effort - ignore */ 6382 } 6383 } 6384 } 6385 6386 @Override 6387 public void findFocus(long accessibilityNodeId, int focusType, int interactionId, 6388 IAccessibilityInteractionConnectionCallback callback, int flags, 6389 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6390 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6391 if (viewRootImpl != null && viewRootImpl.mView != null) { 6392 viewRootImpl.getAccessibilityInteractionController() 6393 .findFocusClientThread(accessibilityNodeId, focusType, interactionId, callback, 6394 flags, interrogatingPid, interrogatingTid, spec); 6395 } else { 6396 // We cannot make the call and notify the caller so it does not wait. 6397 try { 6398 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6399 } catch (RemoteException re) { 6400 /* best effort - ignore */ 6401 } 6402 } 6403 } 6404 6405 @Override 6406 public void focusSearch(long accessibilityNodeId, int direction, int interactionId, 6407 IAccessibilityInteractionConnectionCallback callback, int flags, 6408 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6409 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6410 if (viewRootImpl != null && viewRootImpl.mView != null) { 6411 viewRootImpl.getAccessibilityInteractionController() 6412 .focusSearchClientThread(accessibilityNodeId, direction, interactionId, 6413 callback, flags, interrogatingPid, interrogatingTid, spec); 6414 } else { 6415 // We cannot make the call and notify the caller so it does not wait. 6416 try { 6417 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6418 } catch (RemoteException re) { 6419 /* best effort - ignore */ 6420 } 6421 } 6422 } 6423 } 6424 6425 private class SendWindowContentChangedAccessibilityEvent implements Runnable { 6426 public View mSource; 6427 public long mLastEventTimeMillis; 6428 6429 public void run() { 6430 mLastEventTimeMillis = SystemClock.uptimeMillis(); 6431 AccessibilityEvent event = AccessibilityEvent.obtain(); 6432 event.setEventType(AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED); 6433 event.setContentChangeType(AccessibilityEvent.CONTENT_CHANGE_TYPE_SUBTREE); 6434 mSource.sendAccessibilityEventUnchecked(event); 6435 mSource.resetSubtreeAccessibilityStateChanged(); 6436 mSource = null; 6437 } 6438 6439 public void runOrPost(View source) { 6440 if (mSource != null) { 6441 mSource = getCommonPredecessor(mSource, source); 6442 return; 6443 } 6444 mSource = source; 6445 final long timeSinceLastMillis = SystemClock.uptimeMillis() - mLastEventTimeMillis; 6446 final long minEventIntevalMillis = 6447 ViewConfiguration.getSendRecurringAccessibilityEventsInterval(); 6448 if (timeSinceLastMillis >= minEventIntevalMillis) { 6449 mSource.removeCallbacks(this); 6450 run(); 6451 } else { 6452 mSource.postDelayed(this, minEventIntevalMillis - timeSinceLastMillis); 6453 } 6454 } 6455 } 6456} 6457