ViewRootImpl.java revision 88d7f7992553dde4d140325b306ac9d8f43b9387
1/* 2 * Copyright (C) 2006 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.view; 18 19import android.Manifest; 20import android.animation.LayoutTransition; 21import android.app.ActivityManagerNative; 22import android.content.ClipDescription; 23import android.content.ComponentCallbacks; 24import android.content.ComponentCallbacks2; 25import android.content.Context; 26import android.content.pm.PackageManager; 27import android.content.res.CompatibilityInfo; 28import android.content.res.Configuration; 29import android.content.res.Resources; 30import android.graphics.Canvas; 31import android.graphics.Paint; 32import android.graphics.PixelFormat; 33import android.graphics.Point; 34import android.graphics.PointF; 35import android.graphics.PorterDuff; 36import android.graphics.Rect; 37import android.graphics.Region; 38import android.graphics.drawable.Drawable; 39import android.media.AudioManager; 40import android.os.Binder; 41import android.os.Bundle; 42import android.os.Debug; 43import android.os.Handler; 44import android.os.Looper; 45import android.os.Message; 46import android.os.ParcelFileDescriptor; 47import android.os.PowerManager; 48import android.os.Process; 49import android.os.RemoteException; 50import android.os.SystemClock; 51import android.os.SystemProperties; 52import android.os.Trace; 53import android.util.AndroidRuntimeException; 54import android.util.DisplayMetrics; 55import android.util.Log; 56import android.util.Slog; 57import android.util.TypedValue; 58import android.view.View.AttachInfo; 59import android.view.View.MeasureSpec; 60import android.view.accessibility.AccessibilityEvent; 61import android.view.accessibility.AccessibilityManager; 62import android.view.accessibility.AccessibilityManager.AccessibilityStateChangeListener; 63import android.view.accessibility.AccessibilityNodeInfo; 64import android.view.accessibility.AccessibilityNodeProvider; 65import android.view.accessibility.IAccessibilityInteractionConnection; 66import android.view.accessibility.IAccessibilityInteractionConnectionCallback; 67import android.view.animation.AccelerateDecelerateInterpolator; 68import android.view.animation.Interpolator; 69import android.view.inputmethod.InputConnection; 70import android.view.inputmethod.InputMethodManager; 71import android.widget.Scroller; 72 73import com.android.internal.R; 74import com.android.internal.os.SomeArgs; 75import com.android.internal.policy.PolicyManager; 76import com.android.internal.view.BaseSurfaceHolder; 77import com.android.internal.view.RootViewSurfaceTaker; 78 79import java.io.IOException; 80import java.io.OutputStream; 81import java.lang.ref.WeakReference; 82import java.util.ArrayList; 83import java.util.HashSet; 84 85/** 86 * The top of a view hierarchy, implementing the needed protocol between View 87 * and the WindowManager. This is for the most part an internal implementation 88 * detail of {@link WindowManagerGlobal}. 89 * 90 * {@hide} 91 */ 92@SuppressWarnings({"EmptyCatchBlock", "PointlessBooleanExpression"}) 93public final class ViewRootImpl implements ViewParent, 94 View.AttachInfo.Callbacks, HardwareRenderer.HardwareDrawCallbacks { 95 private static final String TAG = "ViewRootImpl"; 96 private static final boolean DBG = false; 97 private static final boolean LOCAL_LOGV = false; 98 /** @noinspection PointlessBooleanExpression*/ 99 private static final boolean DEBUG_DRAW = false || LOCAL_LOGV; 100 private static final boolean DEBUG_LAYOUT = false || LOCAL_LOGV; 101 private static final boolean DEBUG_DIALOG = false || LOCAL_LOGV; 102 private static final boolean DEBUG_INPUT_RESIZE = false || LOCAL_LOGV; 103 private static final boolean DEBUG_ORIENTATION = false || LOCAL_LOGV; 104 private static final boolean DEBUG_TRACKBALL = false || LOCAL_LOGV; 105 private static final boolean DEBUG_IMF = false || LOCAL_LOGV; 106 private static final boolean DEBUG_CONFIGURATION = false || LOCAL_LOGV; 107 private static final boolean DEBUG_FPS = false; 108 private static final boolean DEBUG_INPUT_PROCESSING = false || LOCAL_LOGV; 109 110 /** 111 * Set this system property to true to force the view hierarchy to render 112 * at 60 Hz. This can be used to measure the potential framerate. 113 */ 114 private static final String PROPERTY_PROFILE_RENDERING = "viewroot.profile_rendering"; 115 private static final String PROPERTY_MEDIA_DISABLED = "config.disable_media"; 116 117 /** 118 * Maximum time we allow the user to roll the trackball enough to generate 119 * a key event, before resetting the counters. 120 */ 121 static final int MAX_TRACKBALL_DELAY = 250; 122 123 static final ThreadLocal<RunQueue> sRunQueues = new ThreadLocal<RunQueue>(); 124 125 static final ArrayList<Runnable> sFirstDrawHandlers = new ArrayList<Runnable>(); 126 static boolean sFirstDrawComplete = false; 127 128 static final ArrayList<ComponentCallbacks> sConfigCallbacks 129 = new ArrayList<ComponentCallbacks>(); 130 131 final Context mContext; 132 final IWindowSession mWindowSession; 133 final Display mDisplay; 134 final String mBasePackageName; 135 136 final int[] mTmpLocation = new int[2]; 137 138 final TypedValue mTmpValue = new TypedValue(); 139 140 final Thread mThread; 141 142 final WindowLeaked mLocation; 143 144 final WindowManager.LayoutParams mWindowAttributes = new WindowManager.LayoutParams(); 145 146 final W mWindow; 147 148 final int mTargetSdkVersion; 149 150 int mSeq; 151 152 View mView; 153 154 View mAccessibilityFocusedHost; 155 AccessibilityNodeInfo mAccessibilityFocusedVirtualView; 156 157 int mViewVisibility; 158 boolean mAppVisible = true; 159 int mOrigWindowType = -1; 160 161 // Set to true if the owner of this window is in the stopped state, 162 // so the window should no longer be active. 163 boolean mStopped = false; 164 165 boolean mLastInCompatMode = false; 166 167 SurfaceHolder.Callback2 mSurfaceHolderCallback; 168 BaseSurfaceHolder mSurfaceHolder; 169 boolean mIsCreating; 170 boolean mDrawingAllowed; 171 172 final Region mTransparentRegion; 173 final Region mPreviousTransparentRegion; 174 175 int mWidth; 176 int mHeight; 177 Rect mDirty; 178 final Rect mCurrentDirty = new Rect(); 179 boolean mIsAnimating; 180 181 CompatibilityInfo.Translator mTranslator; 182 183 final View.AttachInfo mAttachInfo; 184 InputChannel mInputChannel; 185 InputQueue.Callback mInputQueueCallback; 186 InputQueue mInputQueue; 187 FallbackEventHandler mFallbackEventHandler; 188 Choreographer mChoreographer; 189 190 final Rect mTempRect; // used in the transaction to not thrash the heap. 191 final Rect mVisRect; // used to retrieve visible rect of focused view. 192 193 boolean mTraversalScheduled; 194 int mTraversalBarrier; 195 boolean mWillDrawSoon; 196 /** Set to true while in performTraversals for detecting when die(true) is called from internal 197 * callbacks such as onMeasure, onPreDraw, onDraw and deferring doDie() until later. */ 198 boolean mIsInTraversal; 199 boolean mFitSystemWindowsRequested; 200 boolean mLayoutRequested; 201 boolean mFirst; 202 boolean mReportNextDraw; 203 boolean mFullRedrawNeeded; 204 boolean mNewSurfaceNeeded; 205 boolean mHasHadWindowFocus; 206 boolean mLastWasImTarget; 207 boolean mWindowsAnimating; 208 boolean mDrawDuringWindowsAnimating; 209 boolean mIsDrawing; 210 int mLastSystemUiVisibility; 211 int mClientWindowLayoutFlags; 212 boolean mLastOverscanRequested; 213 214 // Pool of queued input events. 215 private static final int MAX_QUEUED_INPUT_EVENT_POOL_SIZE = 10; 216 private QueuedInputEvent mQueuedInputEventPool; 217 private int mQueuedInputEventPoolSize; 218 219 /* Input event queue. 220 * Pending input events are input events waiting to be delivered to the input stages 221 * and handled by the application. 222 */ 223 QueuedInputEvent mPendingInputEventHead; 224 QueuedInputEvent mPendingInputEventTail; 225 int mPendingInputEventCount; 226 boolean mProcessInputEventsScheduled; 227 String mPendingInputEventQueueLengthCounterName = "pq"; 228 229 InputStage mFirstInputStage; 230 InputStage mFirstPostImeInputStage; 231 232 boolean mWindowAttributesChanged = false; 233 int mWindowAttributesChangesFlag = 0; 234 235 // These can be accessed by any thread, must be protected with a lock. 236 // Surface can never be reassigned or cleared (use Surface.clear()). 237 private final Surface mSurface = new Surface(); 238 239 boolean mAdded; 240 boolean mAddedTouchMode; 241 242 final DisplayAdjustments mDisplayAdjustments; 243 244 // These are accessed by multiple threads. 245 final Rect mWinFrame; // frame given by window manager. 246 247 final Rect mPendingOverscanInsets = new Rect(); 248 final Rect mPendingVisibleInsets = new Rect(); 249 final Rect mPendingContentInsets = new Rect(); 250 final ViewTreeObserver.InternalInsetsInfo mLastGivenInsets 251 = new ViewTreeObserver.InternalInsetsInfo(); 252 253 final Rect mFitSystemWindowsInsets = new Rect(); 254 255 final Configuration mLastConfiguration = new Configuration(); 256 final Configuration mPendingConfiguration = new Configuration(); 257 258 boolean mScrollMayChange; 259 int mSoftInputMode; 260 WeakReference<View> mLastScrolledFocus; 261 int mScrollY; 262 int mCurScrollY; 263 Scroller mScroller; 264 HardwareLayer mResizeBuffer; 265 long mResizeBufferStartTime; 266 int mResizeBufferDuration; 267 static final Interpolator mResizeInterpolator = new AccelerateDecelerateInterpolator(); 268 private ArrayList<LayoutTransition> mPendingTransitions; 269 270 final ViewConfiguration mViewConfiguration; 271 272 /* Drag/drop */ 273 ClipDescription mDragDescription; 274 View mCurrentDragView; 275 volatile Object mLocalDragState; 276 final PointF mDragPoint = new PointF(); 277 final PointF mLastTouchPoint = new PointF(); 278 279 private boolean mProfileRendering; 280 private Choreographer.FrameCallback mRenderProfiler; 281 private boolean mRenderProfilingEnabled; 282 283 private boolean mMediaDisabled; 284 285 // Variables to track frames per second, enabled via DEBUG_FPS flag 286 private long mFpsStartTime = -1; 287 private long mFpsPrevTime = -1; 288 private int mFpsNumFrames; 289 290 private final ArrayList<DisplayList> mDisplayLists = new ArrayList<DisplayList>(); 291 292 /** 293 * see {@link #playSoundEffect(int)} 294 */ 295 AudioManager mAudioManager; 296 297 final AccessibilityManager mAccessibilityManager; 298 299 AccessibilityInteractionController mAccessibilityInteractionController; 300 301 AccessibilityInteractionConnectionManager mAccessibilityInteractionConnectionManager; 302 303 SendWindowContentChangedAccessibilityEvent mSendWindowContentChangedAccessibilityEvent; 304 305 HashSet<View> mTempHashSet; 306 307 private final int mDensity; 308 private final int mNoncompatDensity; 309 310 private boolean mInLayout = false; 311 ArrayList<View> mLayoutRequesters = new ArrayList<View>(); 312 boolean mHandlingLayoutInLayoutRequest = false; 313 314 private int mViewLayoutDirectionInitial; 315 316 /** Set to true once doDie() has been called. */ 317 private boolean mRemoved; 318 319 /** 320 * Consistency verifier for debugging purposes. 321 */ 322 protected final InputEventConsistencyVerifier mInputEventConsistencyVerifier = 323 InputEventConsistencyVerifier.isInstrumentationEnabled() ? 324 new InputEventConsistencyVerifier(this, 0) : null; 325 326 static final class SystemUiVisibilityInfo { 327 int seq; 328 int globalVisibility; 329 int localValue; 330 int localChanges; 331 } 332 333 public ViewRootImpl(Context context, Display display) { 334 mContext = context; 335 mWindowSession = WindowManagerGlobal.getWindowSession(); 336 mDisplay = display; 337 mBasePackageName = context.getBasePackageName(); 338 339 mDisplayAdjustments = display.getDisplayAdjustments(); 340 341 mThread = Thread.currentThread(); 342 mLocation = new WindowLeaked(null); 343 mLocation.fillInStackTrace(); 344 mWidth = -1; 345 mHeight = -1; 346 mDirty = new Rect(); 347 mTempRect = new Rect(); 348 mVisRect = new Rect(); 349 mWinFrame = new Rect(); 350 mWindow = new W(this); 351 mTargetSdkVersion = context.getApplicationInfo().targetSdkVersion; 352 mViewVisibility = View.GONE; 353 mTransparentRegion = new Region(); 354 mPreviousTransparentRegion = new Region(); 355 mFirst = true; // true for the first time the view is added 356 mAdded = false; 357 mAccessibilityManager = AccessibilityManager.getInstance(context); 358 mAccessibilityInteractionConnectionManager = 359 new AccessibilityInteractionConnectionManager(); 360 mAccessibilityManager.addAccessibilityStateChangeListener( 361 mAccessibilityInteractionConnectionManager); 362 mAttachInfo = new View.AttachInfo(mWindowSession, mWindow, display, this, mHandler, this); 363 mViewConfiguration = ViewConfiguration.get(context); 364 mDensity = context.getResources().getDisplayMetrics().densityDpi; 365 mNoncompatDensity = context.getResources().getDisplayMetrics().noncompatDensityDpi; 366 mFallbackEventHandler = PolicyManager.makeNewFallbackEventHandler(context); 367 mChoreographer = Choreographer.getInstance(); 368 369 PowerManager powerManager = (PowerManager) context.getSystemService(Context.POWER_SERVICE); 370 mAttachInfo.mScreenOn = powerManager.isScreenOn(); 371 loadSystemProperties(); 372 } 373 374 public static void addFirstDrawHandler(Runnable callback) { 375 synchronized (sFirstDrawHandlers) { 376 if (!sFirstDrawComplete) { 377 sFirstDrawHandlers.add(callback); 378 } 379 } 380 } 381 382 public static void addConfigCallback(ComponentCallbacks callback) { 383 synchronized (sConfigCallbacks) { 384 sConfigCallbacks.add(callback); 385 } 386 } 387 388 // FIXME for perf testing only 389 private boolean mProfile = false; 390 391 /** 392 * Call this to profile the next traversal call. 393 * FIXME for perf testing only. Remove eventually 394 */ 395 public void profile() { 396 mProfile = true; 397 } 398 399 /** 400 * Indicates whether we are in touch mode. Calling this method triggers an IPC 401 * call and should be avoided whenever possible. 402 * 403 * @return True, if the device is in touch mode, false otherwise. 404 * 405 * @hide 406 */ 407 static boolean isInTouchMode() { 408 IWindowSession windowSession = WindowManagerGlobal.peekWindowSession(); 409 if (windowSession != null) { 410 try { 411 return windowSession.getInTouchMode(); 412 } catch (RemoteException e) { 413 } 414 } 415 return false; 416 } 417 418 /** 419 * We have one child 420 */ 421 public void setView(View view, WindowManager.LayoutParams attrs, View panelParentView) { 422 synchronized (this) { 423 if (mView == null) { 424 mView = view; 425 mViewLayoutDirectionInitial = mView.getRawLayoutDirection(); 426 mFallbackEventHandler.setView(view); 427 mWindowAttributes.copyFrom(attrs); 428 if (mWindowAttributes.packageName == null) { 429 mWindowAttributes.packageName = mBasePackageName; 430 } 431 attrs = mWindowAttributes; 432 // Keep track of the actual window flags supplied by the client. 433 mClientWindowLayoutFlags = attrs.flags; 434 435 setAccessibilityFocus(null, null); 436 437 if (view instanceof RootViewSurfaceTaker) { 438 mSurfaceHolderCallback = 439 ((RootViewSurfaceTaker)view).willYouTakeTheSurface(); 440 if (mSurfaceHolderCallback != null) { 441 mSurfaceHolder = new TakenSurfaceHolder(); 442 mSurfaceHolder.setFormat(PixelFormat.UNKNOWN); 443 } 444 } 445 446 CompatibilityInfo compatibilityInfo = mDisplayAdjustments.getCompatibilityInfo(); 447 mTranslator = compatibilityInfo.getTranslator(); 448 mDisplayAdjustments.setActivityToken(attrs.token); 449 450 // If the application owns the surface, don't enable hardware acceleration 451 if (mSurfaceHolder == null) { 452 enableHardwareAcceleration(attrs); 453 } 454 455 boolean restore = false; 456 if (mTranslator != null) { 457 mSurface.setCompatibilityTranslator(mTranslator); 458 restore = true; 459 attrs.backup(); 460 mTranslator.translateWindowLayout(attrs); 461 } 462 if (DEBUG_LAYOUT) Log.d(TAG, "WindowLayout in setView:" + attrs); 463 464 if (!compatibilityInfo.supportsScreen()) { 465 attrs.flags |= WindowManager.LayoutParams.FLAG_COMPATIBLE_WINDOW; 466 mLastInCompatMode = true; 467 } 468 469 mSoftInputMode = attrs.softInputMode; 470 mWindowAttributesChanged = true; 471 mWindowAttributesChangesFlag = WindowManager.LayoutParams.EVERYTHING_CHANGED; 472 mAttachInfo.mRootView = view; 473 mAttachInfo.mScalingRequired = mTranslator != null; 474 mAttachInfo.mApplicationScale = 475 mTranslator == null ? 1.0f : mTranslator.applicationScale; 476 if (panelParentView != null) { 477 mAttachInfo.mPanelParentWindowToken 478 = panelParentView.getApplicationWindowToken(); 479 } 480 mAdded = true; 481 int res; /* = WindowManagerImpl.ADD_OKAY; */ 482 483 // Schedule the first layout -before- adding to the window 484 // manager, to make sure we do the relayout before receiving 485 // any other events from the system. 486 requestLayout(); 487 if ((mWindowAttributes.inputFeatures 488 & WindowManager.LayoutParams.INPUT_FEATURE_NO_INPUT_CHANNEL) == 0) { 489 mInputChannel = new InputChannel(); 490 } 491 try { 492 mOrigWindowType = mWindowAttributes.type; 493 mAttachInfo.mRecomputeGlobalAttributes = true; 494 collectViewAttributes(); 495 res = mWindowSession.addToDisplay(mWindow, mSeq, mWindowAttributes, 496 getHostVisibility(), mDisplay.getDisplayId(), 497 mAttachInfo.mContentInsets, mInputChannel); 498 } catch (RemoteException e) { 499 mAdded = false; 500 mView = null; 501 mAttachInfo.mRootView = null; 502 mInputChannel = null; 503 mFallbackEventHandler.setView(null); 504 unscheduleTraversals(); 505 setAccessibilityFocus(null, null); 506 throw new RuntimeException("Adding window failed", e); 507 } finally { 508 if (restore) { 509 attrs.restore(); 510 } 511 } 512 513 if (mTranslator != null) { 514 mTranslator.translateRectInScreenToAppWindow(mAttachInfo.mContentInsets); 515 } 516 mPendingOverscanInsets.set(0, 0, 0, 0); 517 mPendingContentInsets.set(mAttachInfo.mContentInsets); 518 mPendingVisibleInsets.set(0, 0, 0, 0); 519 if (DEBUG_LAYOUT) Log.v(TAG, "Added window " + mWindow); 520 if (res < WindowManagerGlobal.ADD_OKAY) { 521 mAttachInfo.mRootView = null; 522 mAdded = false; 523 mFallbackEventHandler.setView(null); 524 unscheduleTraversals(); 525 setAccessibilityFocus(null, null); 526 switch (res) { 527 case WindowManagerGlobal.ADD_BAD_APP_TOKEN: 528 case WindowManagerGlobal.ADD_BAD_SUBWINDOW_TOKEN: 529 throw new WindowManager.BadTokenException( 530 "Unable to add window -- token " + attrs.token 531 + " is not valid; is your activity running?"); 532 case WindowManagerGlobal.ADD_NOT_APP_TOKEN: 533 throw new WindowManager.BadTokenException( 534 "Unable to add window -- token " + attrs.token 535 + " is not for an application"); 536 case WindowManagerGlobal.ADD_APP_EXITING: 537 throw new WindowManager.BadTokenException( 538 "Unable to add window -- app for token " + attrs.token 539 + " is exiting"); 540 case WindowManagerGlobal.ADD_DUPLICATE_ADD: 541 throw new WindowManager.BadTokenException( 542 "Unable to add window -- window " + mWindow 543 + " has already been added"); 544 case WindowManagerGlobal.ADD_STARTING_NOT_NEEDED: 545 // Silently ignore -- we would have just removed it 546 // right away, anyway. 547 return; 548 case WindowManagerGlobal.ADD_MULTIPLE_SINGLETON: 549 throw new WindowManager.BadTokenException( 550 "Unable to add window " + mWindow + 551 " -- another window of this type already exists"); 552 case WindowManagerGlobal.ADD_PERMISSION_DENIED: 553 throw new WindowManager.BadTokenException( 554 "Unable to add window " + mWindow + 555 " -- permission denied for this window type"); 556 case WindowManagerGlobal.ADD_INVALID_DISPLAY: 557 throw new WindowManager.InvalidDisplayException( 558 "Unable to add window " + mWindow + 559 " -- the specified display can not be found"); 560 } 561 throw new RuntimeException( 562 "Unable to add window -- unknown error code " + res); 563 } 564 565 if (view instanceof RootViewSurfaceTaker) { 566 mInputQueueCallback = 567 ((RootViewSurfaceTaker)view).willYouTakeTheInputQueue(); 568 } 569 if (mInputChannel != null) { 570 if (mInputQueueCallback != null) { 571 mInputQueue = new InputQueue(); 572 mInputQueueCallback.onInputQueueCreated(mInputQueue); 573 } 574 mInputEventReceiver = new WindowInputEventReceiver(mInputChannel, 575 Looper.myLooper()); 576 } 577 578 view.assignParent(this); 579 mAddedTouchMode = (res & WindowManagerGlobal.ADD_FLAG_IN_TOUCH_MODE) != 0; 580 mAppVisible = (res & WindowManagerGlobal.ADD_FLAG_APP_VISIBLE) != 0; 581 582 if (mAccessibilityManager.isEnabled()) { 583 mAccessibilityInteractionConnectionManager.ensureConnection(); 584 } 585 586 if (view.getImportantForAccessibility() == View.IMPORTANT_FOR_ACCESSIBILITY_AUTO) { 587 view.setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_YES); 588 } 589 590 // Set up the input pipeline. 591 CharSequence counterSuffix = attrs.getTitle(); 592 InputStage syntheticInputStage = new SyntheticInputStage(); 593 InputStage viewPostImeStage = new ViewPostImeInputStage(syntheticInputStage); 594 InputStage nativePostImeStage = new NativePostImeInputStage(viewPostImeStage, 595 "aq:native-post-ime:" + counterSuffix); 596 InputStage earlyPostImeStage = new EarlyPostImeInputStage(nativePostImeStage); 597 InputStage imeStage = new ImeInputStage(earlyPostImeStage, 598 "aq:ime:" + counterSuffix); 599 InputStage viewPreImeStage = new ViewPreImeInputStage(imeStage); 600 InputStage nativePreImeStage = new NativePreImeInputStage(viewPreImeStage, 601 "aq:native-pre-ime:" + counterSuffix); 602 603 mFirstInputStage = nativePreImeStage; 604 mFirstPostImeInputStage = earlyPostImeStage; 605 mPendingInputEventQueueLengthCounterName = "aq:pending:" + counterSuffix; 606 } 607 } 608 } 609 610 /** Whether the window is in local focus mode or not */ 611 private boolean isInLocalFocusMode() { 612 return (mWindowAttributes.flags & WindowManager.LayoutParams.FLAG_LOCAL_FOCUS_MODE) != 0; 613 } 614 615 void destroyHardwareResources() { 616 invalidateDisplayLists(); 617 if (mAttachInfo.mHardwareRenderer != null) { 618 mAttachInfo.mHardwareRenderer.destroyHardwareResources(mView); 619 mAttachInfo.mHardwareRenderer.destroy(false); 620 } 621 } 622 623 void destroyHardwareLayers() { 624 if (mThread != Thread.currentThread()) { 625 if (mAttachInfo.mHardwareRenderer != null && 626 mAttachInfo.mHardwareRenderer.isEnabled()) { 627 HardwareRenderer.trimMemory(ComponentCallbacks2.TRIM_MEMORY_MODERATE); 628 } 629 } else { 630 invalidateDisplayLists(); 631 if (mAttachInfo.mHardwareRenderer != null && 632 mAttachInfo.mHardwareRenderer.isEnabled()) { 633 mAttachInfo.mHardwareRenderer.destroyLayers(mView); 634 } 635 } 636 } 637 638 void pushHardwareLayerUpdate(HardwareLayer layer) { 639 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled()) { 640 mAttachInfo.mHardwareRenderer.pushLayerUpdate(layer); 641 } 642 } 643 644 void flushHardwareLayerUpdates() { 645 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled() && 646 mAttachInfo.mHardwareRenderer.validate()) { 647 mAttachInfo.mHardwareRenderer.flushLayerUpdates(); 648 } 649 } 650 651 void dispatchFlushHardwareLayerUpdates() { 652 mHandler.removeMessages(MSG_FLUSH_LAYER_UPDATES); 653 mHandler.sendMessageAtFrontOfQueue(mHandler.obtainMessage(MSG_FLUSH_LAYER_UPDATES)); 654 } 655 656 public boolean attachFunctor(int functor) { 657 //noinspection SimplifiableIfStatement 658 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled()) { 659 return mAttachInfo.mHardwareRenderer.attachFunctor(mAttachInfo, functor); 660 } 661 return false; 662 } 663 664 public void detachFunctor(int functor) { 665 if (mAttachInfo.mHardwareRenderer != null) { 666 mAttachInfo.mHardwareRenderer.detachFunctor(functor); 667 } 668 } 669 670 private void enableHardwareAcceleration(WindowManager.LayoutParams attrs) { 671 mAttachInfo.mHardwareAccelerated = false; 672 mAttachInfo.mHardwareAccelerationRequested = false; 673 674 // Don't enable hardware acceleration when the application is in compatibility mode 675 if (mTranslator != null) return; 676 677 // Try to enable hardware acceleration if requested 678 final boolean hardwareAccelerated = 679 (attrs.flags & WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED) != 0; 680 681 if (hardwareAccelerated) { 682 if (!HardwareRenderer.isAvailable()) { 683 return; 684 } 685 686 // Persistent processes (including the system) should not do 687 // accelerated rendering on low-end devices. In that case, 688 // sRendererDisabled will be set. In addition, the system process 689 // itself should never do accelerated rendering. In that case, both 690 // sRendererDisabled and sSystemRendererDisabled are set. When 691 // sSystemRendererDisabled is set, PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED 692 // can be used by code on the system process to escape that and enable 693 // HW accelerated drawing. (This is basically for the lock screen.) 694 695 final boolean fakeHwAccelerated = (attrs.privateFlags & 696 WindowManager.LayoutParams.PRIVATE_FLAG_FAKE_HARDWARE_ACCELERATED) != 0; 697 final boolean forceHwAccelerated = (attrs.privateFlags & 698 WindowManager.LayoutParams.PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED) != 0; 699 700 if (!HardwareRenderer.sRendererDisabled || (HardwareRenderer.sSystemRendererDisabled 701 && forceHwAccelerated)) { 702 // Don't enable hardware acceleration when we're not on the main thread 703 if (!HardwareRenderer.sSystemRendererDisabled && 704 Looper.getMainLooper() != Looper.myLooper()) { 705 Log.w(HardwareRenderer.LOG_TAG, "Attempting to initialize hardware " 706 + "acceleration outside of the main thread, aborting"); 707 return; 708 } 709 710 if (mAttachInfo.mHardwareRenderer != null) { 711 mAttachInfo.mHardwareRenderer.destroy(true); 712 } 713 714 final boolean translucent = attrs.format != PixelFormat.OPAQUE; 715 mAttachInfo.mHardwareRenderer = HardwareRenderer.createGlRenderer(2, translucent); 716 if (mAttachInfo.mHardwareRenderer != null) { 717 mAttachInfo.mHardwareRenderer.setName(attrs.getTitle().toString()); 718 mAttachInfo.mHardwareAccelerated = 719 mAttachInfo.mHardwareAccelerationRequested = true; 720 } 721 } else if (fakeHwAccelerated) { 722 // The window had wanted to use hardware acceleration, but this 723 // is not allowed in its process. By setting this flag, it can 724 // still render as if it was accelerated. This is basically for 725 // the preview windows the window manager shows for launching 726 // applications, so they will look more like the app being launched. 727 mAttachInfo.mHardwareAccelerationRequested = true; 728 } 729 } 730 } 731 732 public View getView() { 733 return mView; 734 } 735 736 final WindowLeaked getLocation() { 737 return mLocation; 738 } 739 740 void setLayoutParams(WindowManager.LayoutParams attrs, boolean newView) { 741 synchronized (this) { 742 int oldSoftInputMode = mWindowAttributes.softInputMode; 743 // Keep track of the actual window flags supplied by the client. 744 mClientWindowLayoutFlags = attrs.flags; 745 // preserve compatible window flag if exists. 746 int compatibleWindowFlag = 747 mWindowAttributes.flags & WindowManager.LayoutParams.FLAG_COMPATIBLE_WINDOW; 748 // transfer over system UI visibility values as they carry current state. 749 attrs.systemUiVisibility = mWindowAttributes.systemUiVisibility; 750 attrs.subtreeSystemUiVisibility = mWindowAttributes.subtreeSystemUiVisibility; 751 mWindowAttributesChangesFlag = mWindowAttributes.copyFrom(attrs); 752 if (mWindowAttributes.packageName == null) { 753 mWindowAttributes.packageName = mBasePackageName; 754 } 755 mWindowAttributes.flags |= compatibleWindowFlag; 756 757 applyKeepScreenOnFlag(mWindowAttributes); 758 759 if (newView) { 760 mSoftInputMode = attrs.softInputMode; 761 requestLayout(); 762 } 763 // Don't lose the mode we last auto-computed. 764 if ((attrs.softInputMode&WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 765 == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 766 mWindowAttributes.softInputMode = (mWindowAttributes.softInputMode 767 & ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 768 | (oldSoftInputMode 769 & WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST); 770 } 771 mWindowAttributesChanged = true; 772 scheduleTraversals(); 773 } 774 } 775 776 void handleAppVisibility(boolean visible) { 777 if (mAppVisible != visible) { 778 mAppVisible = visible; 779 scheduleTraversals(); 780 } 781 } 782 783 void handleGetNewSurface() { 784 mNewSurfaceNeeded = true; 785 mFullRedrawNeeded = true; 786 scheduleTraversals(); 787 } 788 789 void handleScreenStateChange(boolean on) { 790 if (on != mAttachInfo.mScreenOn) { 791 mAttachInfo.mScreenOn = on; 792 if (mView != null) { 793 mView.dispatchScreenStateChanged(on ? View.SCREEN_STATE_ON : View.SCREEN_STATE_OFF); 794 } 795 if (on) { 796 mFullRedrawNeeded = true; 797 scheduleTraversals(); 798 } 799 } 800 } 801 802 @Override 803 public void requestFitSystemWindows() { 804 checkThread(); 805 mFitSystemWindowsRequested = true; 806 scheduleTraversals(); 807 } 808 809 @Override 810 public void requestLayout() { 811 if (!mHandlingLayoutInLayoutRequest) { 812 checkThread(); 813 mLayoutRequested = true; 814 scheduleTraversals(); 815 } 816 } 817 818 @Override 819 public boolean isLayoutRequested() { 820 return mLayoutRequested; 821 } 822 823 void invalidate() { 824 mDirty.set(0, 0, mWidth, mHeight); 825 scheduleTraversals(); 826 } 827 828 void invalidateWorld(View view) { 829 view.invalidate(); 830 if (view instanceof ViewGroup) { 831 ViewGroup parent = (ViewGroup) view; 832 for (int i = 0; i < parent.getChildCount(); i++) { 833 invalidateWorld(parent.getChildAt(i)); 834 } 835 } 836 } 837 838 @Override 839 public void invalidateChild(View child, Rect dirty) { 840 invalidateChildInParent(null, dirty); 841 } 842 843 @Override 844 public ViewParent invalidateChildInParent(int[] location, Rect dirty) { 845 checkThread(); 846 if (DEBUG_DRAW) Log.v(TAG, "Invalidate child: " + dirty); 847 848 if (dirty == null) { 849 invalidate(); 850 return null; 851 } else if (dirty.isEmpty() && !mIsAnimating) { 852 return null; 853 } 854 855 if (mCurScrollY != 0 || mTranslator != null) { 856 mTempRect.set(dirty); 857 dirty = mTempRect; 858 if (mCurScrollY != 0) { 859 dirty.offset(0, -mCurScrollY); 860 } 861 if (mTranslator != null) { 862 mTranslator.translateRectInAppWindowToScreen(dirty); 863 } 864 if (mAttachInfo.mScalingRequired) { 865 dirty.inset(-1, -1); 866 } 867 } 868 869 final Rect localDirty = mDirty; 870 if (!localDirty.isEmpty() && !localDirty.contains(dirty)) { 871 mAttachInfo.mSetIgnoreDirtyState = true; 872 mAttachInfo.mIgnoreDirtyState = true; 873 } 874 875 // Add the new dirty rect to the current one 876 localDirty.union(dirty.left, dirty.top, dirty.right, dirty.bottom); 877 // Intersect with the bounds of the window to skip 878 // updates that lie outside of the visible region 879 final float appScale = mAttachInfo.mApplicationScale; 880 final boolean intersected = localDirty.intersect(0, 0, 881 (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 882 if (!intersected) { 883 localDirty.setEmpty(); 884 } 885 if (!mWillDrawSoon && (intersected || mIsAnimating)) { 886 scheduleTraversals(); 887 } 888 889 return null; 890 } 891 892 void setStopped(boolean stopped) { 893 if (mStopped != stopped) { 894 mStopped = stopped; 895 if (!stopped) { 896 scheduleTraversals(); 897 } 898 } 899 } 900 901 @Override 902 public ViewParent getParent() { 903 return null; 904 } 905 906 @Override 907 public boolean getChildVisibleRect(View child, Rect r, android.graphics.Point offset) { 908 if (child != mView) { 909 throw new RuntimeException("child is not mine, honest!"); 910 } 911 // Note: don't apply scroll offset, because we want to know its 912 // visibility in the virtual canvas being given to the view hierarchy. 913 return r.intersect(0, 0, mWidth, mHeight); 914 } 915 916 public void bringChildToFront(View child) { 917 } 918 919 int getHostVisibility() { 920 return mAppVisible ? mView.getVisibility() : View.GONE; 921 } 922 923 void disposeResizeBuffer() { 924 if (mResizeBuffer != null && mAttachInfo.mHardwareRenderer != null) { 925 mAttachInfo.mHardwareRenderer.safelyRun(new Runnable() { 926 @Override 927 public void run() { 928 mResizeBuffer.destroy(); 929 mResizeBuffer = null; 930 } 931 }); 932 } 933 } 934 935 /** 936 * Add LayoutTransition to the list of transitions to be started in the next traversal. 937 * This list will be cleared after the transitions on the list are start()'ed. These 938 * transitionsa re added by LayoutTransition itself when it sets up animations. The setup 939 * happens during the layout phase of traversal, which we want to complete before any of the 940 * animations are started (because those animations may side-effect properties that layout 941 * depends upon, like the bounding rectangles of the affected views). So we add the transition 942 * to the list and it is started just prior to starting the drawing phase of traversal. 943 * 944 * @param transition The LayoutTransition to be started on the next traversal. 945 * 946 * @hide 947 */ 948 public void requestTransitionStart(LayoutTransition transition) { 949 if (mPendingTransitions == null || !mPendingTransitions.contains(transition)) { 950 if (mPendingTransitions == null) { 951 mPendingTransitions = new ArrayList<LayoutTransition>(); 952 } 953 mPendingTransitions.add(transition); 954 } 955 } 956 957 void scheduleTraversals() { 958 if (!mTraversalScheduled) { 959 mTraversalScheduled = true; 960 mTraversalBarrier = mHandler.getLooper().postSyncBarrier(); 961 mChoreographer.postCallback( 962 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 963 scheduleConsumeBatchedInput(); 964 } 965 } 966 967 void unscheduleTraversals() { 968 if (mTraversalScheduled) { 969 mTraversalScheduled = false; 970 mHandler.getLooper().removeSyncBarrier(mTraversalBarrier); 971 mChoreographer.removeCallbacks( 972 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 973 } 974 } 975 976 void doTraversal() { 977 if (mTraversalScheduled) { 978 mTraversalScheduled = false; 979 mHandler.getLooper().removeSyncBarrier(mTraversalBarrier); 980 981 if (mProfile) { 982 Debug.startMethodTracing("ViewAncestor"); 983 } 984 985 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "performTraversals"); 986 try { 987 performTraversals(); 988 } finally { 989 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 990 } 991 992 if (mProfile) { 993 Debug.stopMethodTracing(); 994 mProfile = false; 995 } 996 } 997 } 998 999 private void applyKeepScreenOnFlag(WindowManager.LayoutParams params) { 1000 // Update window's global keep screen on flag: if a view has requested 1001 // that the screen be kept on, then it is always set; otherwise, it is 1002 // set to whatever the client last requested for the global state. 1003 if (mAttachInfo.mKeepScreenOn) { 1004 params.flags |= WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON; 1005 } else { 1006 params.flags = (params.flags&~WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON) 1007 | (mClientWindowLayoutFlags&WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 1008 } 1009 } 1010 1011 private boolean collectViewAttributes() { 1012 final View.AttachInfo attachInfo = mAttachInfo; 1013 if (attachInfo.mRecomputeGlobalAttributes) { 1014 //Log.i(TAG, "Computing view hierarchy attributes!"); 1015 attachInfo.mRecomputeGlobalAttributes = false; 1016 boolean oldScreenOn = attachInfo.mKeepScreenOn; 1017 attachInfo.mKeepScreenOn = false; 1018 attachInfo.mSystemUiVisibility = 0; 1019 attachInfo.mHasSystemUiListeners = false; 1020 mView.dispatchCollectViewAttributes(attachInfo, 0); 1021 attachInfo.mSystemUiVisibility &= ~attachInfo.mDisabledSystemUiVisibility; 1022 WindowManager.LayoutParams params = mWindowAttributes; 1023 if (attachInfo.mKeepScreenOn != oldScreenOn 1024 || attachInfo.mSystemUiVisibility != params.subtreeSystemUiVisibility 1025 || attachInfo.mHasSystemUiListeners != params.hasSystemUiListeners) { 1026 applyKeepScreenOnFlag(params); 1027 params.subtreeSystemUiVisibility = attachInfo.mSystemUiVisibility; 1028 params.hasSystemUiListeners = attachInfo.mHasSystemUiListeners; 1029 mView.dispatchWindowSystemUiVisiblityChanged(attachInfo.mSystemUiVisibility); 1030 return true; 1031 } 1032 } 1033 return false; 1034 } 1035 1036 private boolean measureHierarchy(final View host, final WindowManager.LayoutParams lp, 1037 final Resources res, final int desiredWindowWidth, final int desiredWindowHeight) { 1038 int childWidthMeasureSpec; 1039 int childHeightMeasureSpec; 1040 boolean windowSizeMayChange = false; 1041 1042 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) Log.v(TAG, 1043 "Measuring " + host + " in display " + desiredWindowWidth 1044 + "x" + desiredWindowHeight + "..."); 1045 1046 boolean goodMeasure = false; 1047 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT) { 1048 // On large screens, we don't want to allow dialogs to just 1049 // stretch to fill the entire width of the screen to display 1050 // one line of text. First try doing the layout at a smaller 1051 // size to see if it will fit. 1052 final DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1053 res.getValue(com.android.internal.R.dimen.config_prefDialogWidth, mTmpValue, true); 1054 int baseSize = 0; 1055 if (mTmpValue.type == TypedValue.TYPE_DIMENSION) { 1056 baseSize = (int)mTmpValue.getDimension(packageMetrics); 1057 } 1058 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": baseSize=" + baseSize); 1059 if (baseSize != 0 && desiredWindowWidth > baseSize) { 1060 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1061 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1062 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1063 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": measured (" 1064 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1065 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1066 goodMeasure = true; 1067 } else { 1068 // Didn't fit in that size... try expanding a bit. 1069 baseSize = (baseSize+desiredWindowWidth)/2; 1070 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": next baseSize=" 1071 + baseSize); 1072 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1073 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1074 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": measured (" 1075 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1076 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1077 if (DEBUG_DIALOG) Log.v(TAG, "Good!"); 1078 goodMeasure = true; 1079 } 1080 } 1081 } 1082 } 1083 1084 if (!goodMeasure) { 1085 childWidthMeasureSpec = getRootMeasureSpec(desiredWindowWidth, lp.width); 1086 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1087 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1088 if (mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) { 1089 windowSizeMayChange = true; 1090 } 1091 } 1092 1093 if (DBG) { 1094 System.out.println("======================================"); 1095 System.out.println("performTraversals -- after measure"); 1096 host.debug(); 1097 } 1098 1099 return windowSizeMayChange; 1100 } 1101 1102 private void performTraversals() { 1103 // cache mView since it is used so much below... 1104 final View host = mView; 1105 1106 if (DBG) { 1107 System.out.println("======================================"); 1108 System.out.println("performTraversals"); 1109 host.debug(); 1110 } 1111 1112 if (host == null || !mAdded) 1113 return; 1114 1115 mIsInTraversal = true; 1116 mWillDrawSoon = true; 1117 boolean windowSizeMayChange = false; 1118 boolean newSurface = false; 1119 boolean surfaceChanged = false; 1120 WindowManager.LayoutParams lp = mWindowAttributes; 1121 1122 int desiredWindowWidth; 1123 int desiredWindowHeight; 1124 1125 final View.AttachInfo attachInfo = mAttachInfo; 1126 1127 final int viewVisibility = getHostVisibility(); 1128 boolean viewVisibilityChanged = mViewVisibility != viewVisibility 1129 || mNewSurfaceNeeded; 1130 1131 WindowManager.LayoutParams params = null; 1132 if (mWindowAttributesChanged) { 1133 mWindowAttributesChanged = false; 1134 surfaceChanged = true; 1135 params = lp; 1136 } 1137 CompatibilityInfo compatibilityInfo = mDisplayAdjustments.getCompatibilityInfo(); 1138 if (compatibilityInfo.supportsScreen() == mLastInCompatMode) { 1139 params = lp; 1140 mFullRedrawNeeded = true; 1141 mLayoutRequested = true; 1142 if (mLastInCompatMode) { 1143 params.flags &= ~WindowManager.LayoutParams.FLAG_COMPATIBLE_WINDOW; 1144 mLastInCompatMode = false; 1145 } else { 1146 params.flags |= WindowManager.LayoutParams.FLAG_COMPATIBLE_WINDOW; 1147 mLastInCompatMode = true; 1148 } 1149 } 1150 1151 mWindowAttributesChangesFlag = 0; 1152 1153 Rect frame = mWinFrame; 1154 if (mFirst) { 1155 mFullRedrawNeeded = true; 1156 mLayoutRequested = true; 1157 1158 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL) { 1159 // NOTE -- system code, won't try to do compat mode. 1160 Point size = new Point(); 1161 mDisplay.getRealSize(size); 1162 desiredWindowWidth = size.x; 1163 desiredWindowHeight = size.y; 1164 } else { 1165 DisplayMetrics packageMetrics = 1166 mView.getContext().getResources().getDisplayMetrics(); 1167 desiredWindowWidth = packageMetrics.widthPixels; 1168 desiredWindowHeight = packageMetrics.heightPixels; 1169 } 1170 1171 // For the very first time, tell the view hierarchy that it 1172 // is attached to the window. Note that at this point the surface 1173 // object is not initialized to its backing store, but soon it 1174 // will be (assuming the window is visible). 1175 attachInfo.mSurface = mSurface; 1176 // We used to use the following condition to choose 32 bits drawing caches: 1177 // PixelFormat.hasAlpha(lp.format) || lp.format == PixelFormat.RGBX_8888 1178 // However, windows are now always 32 bits by default, so choose 32 bits 1179 attachInfo.mUse32BitDrawingCache = true; 1180 attachInfo.mHasWindowFocus = false; 1181 attachInfo.mWindowVisibility = viewVisibility; 1182 attachInfo.mRecomputeGlobalAttributes = false; 1183 viewVisibilityChanged = false; 1184 mLastConfiguration.setTo(host.getResources().getConfiguration()); 1185 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1186 // Set the layout direction if it has not been set before (inherit is the default) 1187 if (mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 1188 host.setLayoutDirection(mLastConfiguration.getLayoutDirection()); 1189 } 1190 host.dispatchAttachedToWindow(attachInfo, 0); 1191 attachInfo.mTreeObserver.dispatchOnWindowAttachedChange(true); 1192 mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets); 1193 host.fitSystemWindows(mFitSystemWindowsInsets); 1194 //Log.i(TAG, "Screen on initialized: " + attachInfo.mKeepScreenOn); 1195 1196 } else { 1197 desiredWindowWidth = frame.width(); 1198 desiredWindowHeight = frame.height(); 1199 if (desiredWindowWidth != mWidth || desiredWindowHeight != mHeight) { 1200 if (DEBUG_ORIENTATION) Log.v(TAG, 1201 "View " + host + " resized to: " + frame); 1202 mFullRedrawNeeded = true; 1203 mLayoutRequested = true; 1204 windowSizeMayChange = true; 1205 } 1206 } 1207 1208 if (viewVisibilityChanged) { 1209 attachInfo.mWindowVisibility = viewVisibility; 1210 host.dispatchWindowVisibilityChanged(viewVisibility); 1211 if (viewVisibility != View.VISIBLE || mNewSurfaceNeeded) { 1212 destroyHardwareResources(); 1213 } 1214 if (viewVisibility == View.GONE) { 1215 // After making a window gone, we will count it as being 1216 // shown for the first time the next time it gets focus. 1217 mHasHadWindowFocus = false; 1218 } 1219 } 1220 1221 // Execute enqueued actions on every traversal in case a detached view enqueued an action 1222 getRunQueue().executeActions(attachInfo.mHandler); 1223 1224 boolean insetsChanged = false; 1225 1226 boolean layoutRequested = mLayoutRequested && !mStopped; 1227 if (layoutRequested) { 1228 1229 final Resources res = mView.getContext().getResources(); 1230 1231 if (mFirst) { 1232 // make sure touch mode code executes by setting cached value 1233 // to opposite of the added touch mode. 1234 mAttachInfo.mInTouchMode = !mAddedTouchMode; 1235 ensureTouchModeLocally(mAddedTouchMode); 1236 } else { 1237 if (!mPendingOverscanInsets.equals(mAttachInfo.mOverscanInsets)) { 1238 insetsChanged = true; 1239 } 1240 if (!mPendingContentInsets.equals(mAttachInfo.mContentInsets)) { 1241 insetsChanged = true; 1242 } 1243 if (!mPendingVisibleInsets.equals(mAttachInfo.mVisibleInsets)) { 1244 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1245 if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: " 1246 + mAttachInfo.mVisibleInsets); 1247 } 1248 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT 1249 || lp.height == ViewGroup.LayoutParams.WRAP_CONTENT) { 1250 windowSizeMayChange = true; 1251 1252 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL) { 1253 // NOTE -- system code, won't try to do compat mode. 1254 Point size = new Point(); 1255 mDisplay.getRealSize(size); 1256 desiredWindowWidth = size.x; 1257 desiredWindowHeight = size.y; 1258 } else { 1259 DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1260 desiredWindowWidth = packageMetrics.widthPixels; 1261 desiredWindowHeight = packageMetrics.heightPixels; 1262 } 1263 } 1264 } 1265 1266 // Ask host how big it wants to be 1267 windowSizeMayChange |= measureHierarchy(host, lp, res, 1268 desiredWindowWidth, desiredWindowHeight); 1269 } 1270 1271 if (collectViewAttributes()) { 1272 params = lp; 1273 } 1274 if (attachInfo.mForceReportNewAttributes) { 1275 attachInfo.mForceReportNewAttributes = false; 1276 params = lp; 1277 } 1278 1279 if (mFirst || attachInfo.mViewVisibilityChanged) { 1280 attachInfo.mViewVisibilityChanged = false; 1281 int resizeMode = mSoftInputMode & 1282 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST; 1283 // If we are in auto resize mode, then we need to determine 1284 // what mode to use now. 1285 if (resizeMode == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 1286 final int N = attachInfo.mScrollContainers.size(); 1287 for (int i=0; i<N; i++) { 1288 if (attachInfo.mScrollContainers.get(i).isShown()) { 1289 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE; 1290 } 1291 } 1292 if (resizeMode == 0) { 1293 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_PAN; 1294 } 1295 if ((lp.softInputMode & 1296 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) != resizeMode) { 1297 lp.softInputMode = (lp.softInputMode & 1298 ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) | 1299 resizeMode; 1300 params = lp; 1301 } 1302 } 1303 } 1304 1305 if (params != null) { 1306 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 1307 if (!PixelFormat.formatHasAlpha(params.format)) { 1308 params.format = PixelFormat.TRANSLUCENT; 1309 } 1310 } 1311 mAttachInfo.mOverscanRequested = (params.flags 1312 & WindowManager.LayoutParams.FLAG_LAYOUT_IN_OVERSCAN) != 0; 1313 } 1314 1315 if (mFitSystemWindowsRequested) { 1316 mFitSystemWindowsRequested = false; 1317 mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets); 1318 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1319 host.fitSystemWindows(mFitSystemWindowsInsets); 1320 if (mLayoutRequested) { 1321 // Short-circuit catching a new layout request here, so 1322 // we don't need to go through two layout passes when things 1323 // change due to fitting system windows, which can happen a lot. 1324 windowSizeMayChange |= measureHierarchy(host, lp, 1325 mView.getContext().getResources(), 1326 desiredWindowWidth, desiredWindowHeight); 1327 } 1328 } 1329 1330 if (layoutRequested) { 1331 // Clear this now, so that if anything requests a layout in the 1332 // rest of this function we will catch it and re-run a full 1333 // layout pass. 1334 mLayoutRequested = false; 1335 } 1336 1337 boolean windowShouldResize = layoutRequested && windowSizeMayChange 1338 && ((mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) 1339 || (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT && 1340 frame.width() < desiredWindowWidth && frame.width() != mWidth) 1341 || (lp.height == ViewGroup.LayoutParams.WRAP_CONTENT && 1342 frame.height() < desiredWindowHeight && frame.height() != mHeight)); 1343 1344 final boolean computesInternalInsets = 1345 attachInfo.mTreeObserver.hasComputeInternalInsetsListeners(); 1346 1347 boolean insetsPending = false; 1348 int relayoutResult = 0; 1349 1350 if (mFirst || windowShouldResize || insetsChanged || 1351 viewVisibilityChanged || params != null) { 1352 1353 if (viewVisibility == View.VISIBLE) { 1354 // If this window is giving internal insets to the window 1355 // manager, and it is being added or changing its visibility, 1356 // then we want to first give the window manager "fake" 1357 // insets to cause it to effectively ignore the content of 1358 // the window during layout. This avoids it briefly causing 1359 // other windows to resize/move based on the raw frame of the 1360 // window, waiting until we can finish laying out this window 1361 // and get back to the window manager with the ultimately 1362 // computed insets. 1363 insetsPending = computesInternalInsets && (mFirst || viewVisibilityChanged); 1364 } 1365 1366 if (mSurfaceHolder != null) { 1367 mSurfaceHolder.mSurfaceLock.lock(); 1368 mDrawingAllowed = true; 1369 } 1370 1371 boolean hwInitialized = false; 1372 boolean contentInsetsChanged = false; 1373 boolean hadSurface = mSurface.isValid(); 1374 1375 try { 1376 if (DEBUG_LAYOUT) { 1377 Log.i(TAG, "host=w:" + host.getMeasuredWidth() + ", h:" + 1378 host.getMeasuredHeight() + ", params=" + params); 1379 } 1380 1381 final int surfaceGenerationId = mSurface.getGenerationId(); 1382 relayoutResult = relayoutWindow(params, viewVisibility, insetsPending); 1383 if (!mDrawDuringWindowsAnimating) { 1384 mWindowsAnimating |= 1385 (relayoutResult & WindowManagerGlobal.RELAYOUT_RES_ANIMATING) != 0; 1386 } 1387 1388 if (DEBUG_LAYOUT) Log.v(TAG, "relayout: frame=" + frame.toShortString() 1389 + " overscan=" + mPendingOverscanInsets.toShortString() 1390 + " content=" + mPendingContentInsets.toShortString() 1391 + " visible=" + mPendingVisibleInsets.toShortString() 1392 + " surface=" + mSurface); 1393 1394 if (mPendingConfiguration.seq != 0) { 1395 if (DEBUG_CONFIGURATION) Log.v(TAG, "Visible with new config: " 1396 + mPendingConfiguration); 1397 updateConfiguration(mPendingConfiguration, !mFirst); 1398 mPendingConfiguration.seq = 0; 1399 } 1400 1401 final boolean overscanInsetsChanged = !mPendingOverscanInsets.equals( 1402 mAttachInfo.mOverscanInsets); 1403 contentInsetsChanged = !mPendingContentInsets.equals( 1404 mAttachInfo.mContentInsets); 1405 final boolean visibleInsetsChanged = !mPendingVisibleInsets.equals( 1406 mAttachInfo.mVisibleInsets); 1407 if (contentInsetsChanged) { 1408 if (mWidth > 0 && mHeight > 0 && lp != null && 1409 ((lp.systemUiVisibility|lp.subtreeSystemUiVisibility) 1410 & View.SYSTEM_UI_LAYOUT_FLAGS) == 0 && 1411 mSurface != null && mSurface.isValid() && 1412 !mAttachInfo.mTurnOffWindowResizeAnim && 1413 mAttachInfo.mHardwareRenderer != null && 1414 mAttachInfo.mHardwareRenderer.isEnabled() && 1415 mAttachInfo.mHardwareRenderer.validate() && 1416 lp != null && !PixelFormat.formatHasAlpha(lp.format)) { 1417 1418 disposeResizeBuffer(); 1419 1420 boolean completed = false; 1421 HardwareCanvas hwRendererCanvas = mAttachInfo.mHardwareRenderer.getCanvas(); 1422 HardwareCanvas layerCanvas = null; 1423 try { 1424 if (mResizeBuffer == null) { 1425 mResizeBuffer = mAttachInfo.mHardwareRenderer.createHardwareLayer( 1426 mWidth, mHeight, false); 1427 } else if (mResizeBuffer.getWidth() != mWidth || 1428 mResizeBuffer.getHeight() != mHeight) { 1429 mResizeBuffer.resize(mWidth, mHeight); 1430 } 1431 // TODO: should handle create/resize failure 1432 layerCanvas = mResizeBuffer.start(hwRendererCanvas); 1433 final int restoreCount = layerCanvas.save(); 1434 1435 int yoff; 1436 final boolean scrolling = mScroller != null 1437 && mScroller.computeScrollOffset(); 1438 if (scrolling) { 1439 yoff = mScroller.getCurrY(); 1440 mScroller.abortAnimation(); 1441 } else { 1442 yoff = mScrollY; 1443 } 1444 1445 layerCanvas.translate(0, -yoff); 1446 if (mTranslator != null) { 1447 mTranslator.translateCanvas(layerCanvas); 1448 } 1449 1450 DisplayList displayList = mView.mDisplayList; 1451 if (displayList != null) { 1452 layerCanvas.drawDisplayList(displayList, null, 1453 DisplayList.FLAG_CLIP_CHILDREN); 1454 } else { 1455 mView.draw(layerCanvas); 1456 } 1457 1458 drawAccessibilityFocusedDrawableIfNeeded(layerCanvas); 1459 1460 mResizeBufferStartTime = SystemClock.uptimeMillis(); 1461 mResizeBufferDuration = mView.getResources().getInteger( 1462 com.android.internal.R.integer.config_mediumAnimTime); 1463 completed = true; 1464 1465 layerCanvas.restoreToCount(restoreCount); 1466 } catch (OutOfMemoryError e) { 1467 Log.w(TAG, "Not enough memory for content change anim buffer", e); 1468 } finally { 1469 if (mResizeBuffer != null) { 1470 mResizeBuffer.end(hwRendererCanvas); 1471 if (!completed) { 1472 disposeResizeBuffer(); 1473 } 1474 } 1475 } 1476 } 1477 mAttachInfo.mContentInsets.set(mPendingContentInsets); 1478 if (DEBUG_LAYOUT) Log.v(TAG, "Content insets changing to: " 1479 + mAttachInfo.mContentInsets); 1480 } 1481 if (overscanInsetsChanged) { 1482 mAttachInfo.mOverscanInsets.set(mPendingOverscanInsets); 1483 if (DEBUG_LAYOUT) Log.v(TAG, "Overscan insets changing to: " 1484 + mAttachInfo.mOverscanInsets); 1485 // Need to relayout with content insets. 1486 contentInsetsChanged = true; 1487 } 1488 if (contentInsetsChanged || mLastSystemUiVisibility != 1489 mAttachInfo.mSystemUiVisibility || mFitSystemWindowsRequested 1490 || mLastOverscanRequested != mAttachInfo.mOverscanRequested) { 1491 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1492 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1493 mFitSystemWindowsRequested = false; 1494 mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets); 1495 host.fitSystemWindows(mFitSystemWindowsInsets); 1496 } 1497 if (visibleInsetsChanged) { 1498 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1499 if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: " 1500 + mAttachInfo.mVisibleInsets); 1501 } 1502 1503 if (!hadSurface) { 1504 if (mSurface.isValid()) { 1505 // If we are creating a new surface, then we need to 1506 // completely redraw it. Also, when we get to the 1507 // point of drawing it we will hold off and schedule 1508 // a new traversal instead. This is so we can tell the 1509 // window manager about all of the windows being displayed 1510 // before actually drawing them, so it can display then 1511 // all at once. 1512 newSurface = true; 1513 mFullRedrawNeeded = true; 1514 mPreviousTransparentRegion.setEmpty(); 1515 1516 if (mAttachInfo.mHardwareRenderer != null) { 1517 try { 1518 hwInitialized = mAttachInfo.mHardwareRenderer.initialize( 1519 mHolder.getSurface()); 1520 } catch (Surface.OutOfResourcesException e) { 1521 handleOutOfResourcesException(e); 1522 return; 1523 } 1524 } 1525 } 1526 } else if (!mSurface.isValid()) { 1527 // If the surface has been removed, then reset the scroll 1528 // positions. 1529 if (mLastScrolledFocus != null) { 1530 mLastScrolledFocus.clear(); 1531 } 1532 mScrollY = mCurScrollY = 0; 1533 if (mScroller != null) { 1534 mScroller.abortAnimation(); 1535 } 1536 disposeResizeBuffer(); 1537 // Our surface is gone 1538 if (mAttachInfo.mHardwareRenderer != null && 1539 mAttachInfo.mHardwareRenderer.isEnabled()) { 1540 mAttachInfo.mHardwareRenderer.destroy(true); 1541 } 1542 } else if (surfaceGenerationId != mSurface.getGenerationId() && 1543 mSurfaceHolder == null && mAttachInfo.mHardwareRenderer != null) { 1544 mFullRedrawNeeded = true; 1545 try { 1546 mAttachInfo.mHardwareRenderer.updateSurface(mHolder.getSurface()); 1547 } catch (Surface.OutOfResourcesException e) { 1548 handleOutOfResourcesException(e); 1549 return; 1550 } 1551 } 1552 } catch (RemoteException e) { 1553 } 1554 1555 if (DEBUG_ORIENTATION) Log.v( 1556 TAG, "Relayout returned: frame=" + frame + ", surface=" + mSurface); 1557 1558 attachInfo.mWindowLeft = frame.left; 1559 attachInfo.mWindowTop = frame.top; 1560 1561 // !!FIXME!! This next section handles the case where we did not get the 1562 // window size we asked for. We should avoid this by getting a maximum size from 1563 // the window session beforehand. 1564 if (mWidth != frame.width() || mHeight != frame.height()) { 1565 mWidth = frame.width(); 1566 mHeight = frame.height(); 1567 } 1568 1569 if (mSurfaceHolder != null) { 1570 // The app owns the surface; tell it about what is going on. 1571 if (mSurface.isValid()) { 1572 // XXX .copyFrom() doesn't work! 1573 //mSurfaceHolder.mSurface.copyFrom(mSurface); 1574 mSurfaceHolder.mSurface = mSurface; 1575 } 1576 mSurfaceHolder.setSurfaceFrameSize(mWidth, mHeight); 1577 mSurfaceHolder.mSurfaceLock.unlock(); 1578 if (mSurface.isValid()) { 1579 if (!hadSurface) { 1580 mSurfaceHolder.ungetCallbacks(); 1581 1582 mIsCreating = true; 1583 mSurfaceHolderCallback.surfaceCreated(mSurfaceHolder); 1584 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1585 if (callbacks != null) { 1586 for (SurfaceHolder.Callback c : callbacks) { 1587 c.surfaceCreated(mSurfaceHolder); 1588 } 1589 } 1590 surfaceChanged = true; 1591 } 1592 if (surfaceChanged) { 1593 mSurfaceHolderCallback.surfaceChanged(mSurfaceHolder, 1594 lp.format, mWidth, mHeight); 1595 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1596 if (callbacks != null) { 1597 for (SurfaceHolder.Callback c : callbacks) { 1598 c.surfaceChanged(mSurfaceHolder, lp.format, 1599 mWidth, mHeight); 1600 } 1601 } 1602 } 1603 mIsCreating = false; 1604 } else if (hadSurface) { 1605 mSurfaceHolder.ungetCallbacks(); 1606 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1607 mSurfaceHolderCallback.surfaceDestroyed(mSurfaceHolder); 1608 if (callbacks != null) { 1609 for (SurfaceHolder.Callback c : callbacks) { 1610 c.surfaceDestroyed(mSurfaceHolder); 1611 } 1612 } 1613 mSurfaceHolder.mSurfaceLock.lock(); 1614 try { 1615 mSurfaceHolder.mSurface = new Surface(); 1616 } finally { 1617 mSurfaceHolder.mSurfaceLock.unlock(); 1618 } 1619 } 1620 } 1621 1622 if (mAttachInfo.mHardwareRenderer != null && 1623 mAttachInfo.mHardwareRenderer.isEnabled()) { 1624 if (hwInitialized || 1625 mWidth != mAttachInfo.mHardwareRenderer.getWidth() || 1626 mHeight != mAttachInfo.mHardwareRenderer.getHeight()) { 1627 mAttachInfo.mHardwareRenderer.setup(mWidth, mHeight); 1628 if (!hwInitialized) { 1629 mAttachInfo.mHardwareRenderer.invalidate(mHolder.getSurface()); 1630 mFullRedrawNeeded = true; 1631 } 1632 } 1633 } 1634 1635 if (!mStopped) { 1636 boolean focusChangedDueToTouchMode = ensureTouchModeLocally( 1637 (relayoutResult&WindowManagerGlobal.RELAYOUT_RES_IN_TOUCH_MODE) != 0); 1638 if (focusChangedDueToTouchMode || mWidth != host.getMeasuredWidth() 1639 || mHeight != host.getMeasuredHeight() || contentInsetsChanged) { 1640 int childWidthMeasureSpec = getRootMeasureSpec(mWidth, lp.width); 1641 int childHeightMeasureSpec = getRootMeasureSpec(mHeight, lp.height); 1642 1643 if (DEBUG_LAYOUT) Log.v(TAG, "Ooops, something changed! mWidth=" 1644 + mWidth + " measuredWidth=" + host.getMeasuredWidth() 1645 + " mHeight=" + mHeight 1646 + " measuredHeight=" + host.getMeasuredHeight() 1647 + " coveredInsetsChanged=" + contentInsetsChanged); 1648 1649 // Ask host how big it wants to be 1650 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1651 1652 // Implementation of weights from WindowManager.LayoutParams 1653 // We just grow the dimensions as needed and re-measure if 1654 // needs be 1655 int width = host.getMeasuredWidth(); 1656 int height = host.getMeasuredHeight(); 1657 boolean measureAgain = false; 1658 1659 if (lp.horizontalWeight > 0.0f) { 1660 width += (int) ((mWidth - width) * lp.horizontalWeight); 1661 childWidthMeasureSpec = MeasureSpec.makeMeasureSpec(width, 1662 MeasureSpec.EXACTLY); 1663 measureAgain = true; 1664 } 1665 if (lp.verticalWeight > 0.0f) { 1666 height += (int) ((mHeight - height) * lp.verticalWeight); 1667 childHeightMeasureSpec = MeasureSpec.makeMeasureSpec(height, 1668 MeasureSpec.EXACTLY); 1669 measureAgain = true; 1670 } 1671 1672 if (measureAgain) { 1673 if (DEBUG_LAYOUT) Log.v(TAG, 1674 "And hey let's measure once more: width=" + width 1675 + " height=" + height); 1676 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1677 } 1678 1679 layoutRequested = true; 1680 } 1681 } 1682 } else { 1683 // Not the first pass and no window/insets/visibility change but the window 1684 // may have moved and we need check that and if so to update the left and right 1685 // in the attach info. We translate only the window frame since on window move 1686 // the window manager tells us only for the new frame but the insets are the 1687 // same and we do not want to translate them more than once. 1688 1689 // TODO: Well, we are checking whether the frame has changed similarly 1690 // to how this is done for the insets. This is however incorrect since 1691 // the insets and the frame are translated. For example, the old frame 1692 // was (1, 1 - 1, 1) and was translated to say (2, 2 - 2, 2), now the new 1693 // reported frame is (2, 2 - 2, 2) which implies no change but this is not 1694 // true since we are comparing a not translated value to a translated one. 1695 // This scenario is rare but we may want to fix that. 1696 1697 final boolean windowMoved = (attachInfo.mWindowLeft != frame.left 1698 || attachInfo.mWindowTop != frame.top); 1699 if (windowMoved) { 1700 if (mTranslator != null) { 1701 mTranslator.translateRectInScreenToAppWinFrame(frame); 1702 } 1703 attachInfo.mWindowLeft = frame.left; 1704 attachInfo.mWindowTop = frame.top; 1705 } 1706 } 1707 1708 final boolean didLayout = layoutRequested && !mStopped; 1709 boolean triggerGlobalLayoutListener = didLayout 1710 || attachInfo.mRecomputeGlobalAttributes; 1711 if (didLayout) { 1712 performLayout(lp, desiredWindowWidth, desiredWindowHeight); 1713 1714 // By this point all views have been sized and positioned 1715 // We can compute the transparent area 1716 1717 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 1718 // start out transparent 1719 // TODO: AVOID THAT CALL BY CACHING THE RESULT? 1720 host.getLocationInWindow(mTmpLocation); 1721 mTransparentRegion.set(mTmpLocation[0], mTmpLocation[1], 1722 mTmpLocation[0] + host.mRight - host.mLeft, 1723 mTmpLocation[1] + host.mBottom - host.mTop); 1724 1725 host.gatherTransparentRegion(mTransparentRegion); 1726 if (mTranslator != null) { 1727 mTranslator.translateRegionInWindowToScreen(mTransparentRegion); 1728 } 1729 1730 if (!mTransparentRegion.equals(mPreviousTransparentRegion)) { 1731 mPreviousTransparentRegion.set(mTransparentRegion); 1732 mFullRedrawNeeded = true; 1733 // reconfigure window manager 1734 try { 1735 mWindowSession.setTransparentRegion(mWindow, mTransparentRegion); 1736 } catch (RemoteException e) { 1737 } 1738 } 1739 } 1740 1741 if (DBG) { 1742 System.out.println("======================================"); 1743 System.out.println("performTraversals -- after setFrame"); 1744 host.debug(); 1745 } 1746 } 1747 1748 if (triggerGlobalLayoutListener) { 1749 attachInfo.mRecomputeGlobalAttributes = false; 1750 attachInfo.mTreeObserver.dispatchOnGlobalLayout(); 1751 } 1752 1753 if (computesInternalInsets) { 1754 // Clear the original insets. 1755 final ViewTreeObserver.InternalInsetsInfo insets = attachInfo.mGivenInternalInsets; 1756 insets.reset(); 1757 1758 // Compute new insets in place. 1759 attachInfo.mTreeObserver.dispatchOnComputeInternalInsets(insets); 1760 1761 // Tell the window manager. 1762 if (insetsPending || !mLastGivenInsets.equals(insets)) { 1763 mLastGivenInsets.set(insets); 1764 1765 // Translate insets to screen coordinates if needed. 1766 final Rect contentInsets; 1767 final Rect visibleInsets; 1768 final Region touchableRegion; 1769 if (mTranslator != null) { 1770 contentInsets = mTranslator.getTranslatedContentInsets(insets.contentInsets); 1771 visibleInsets = mTranslator.getTranslatedVisibleInsets(insets.visibleInsets); 1772 touchableRegion = mTranslator.getTranslatedTouchableArea(insets.touchableRegion); 1773 } else { 1774 contentInsets = insets.contentInsets; 1775 visibleInsets = insets.visibleInsets; 1776 touchableRegion = insets.touchableRegion; 1777 } 1778 1779 try { 1780 mWindowSession.setInsets(mWindow, insets.mTouchableInsets, 1781 contentInsets, visibleInsets, touchableRegion); 1782 } catch (RemoteException e) { 1783 } 1784 } 1785 } 1786 1787 boolean skipDraw = false; 1788 1789 if (mFirst) { 1790 // handle first focus request 1791 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: mView.hasFocus()=" 1792 + mView.hasFocus()); 1793 if (mView != null) { 1794 if (!mView.hasFocus()) { 1795 mView.requestFocus(View.FOCUS_FORWARD); 1796 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: requested focused view=" 1797 + mView.findFocus()); 1798 } else { 1799 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: existing focused view=" 1800 + mView.findFocus()); 1801 } 1802 } 1803 if ((relayoutResult & WindowManagerGlobal.RELAYOUT_RES_ANIMATING) != 0) { 1804 // The first time we relayout the window, if the system is 1805 // doing window animations, we want to hold of on any future 1806 // draws until the animation is done. 1807 mWindowsAnimating = true; 1808 } 1809 } else if (mWindowsAnimating) { 1810 skipDraw = true; 1811 } 1812 1813 mFirst = false; 1814 mWillDrawSoon = false; 1815 mNewSurfaceNeeded = false; 1816 mViewVisibility = viewVisibility; 1817 1818 if (mAttachInfo.mHasWindowFocus && !isInLocalFocusMode()) { 1819 final boolean imTarget = WindowManager.LayoutParams 1820 .mayUseInputMethod(mWindowAttributes.flags); 1821 if (imTarget != mLastWasImTarget) { 1822 mLastWasImTarget = imTarget; 1823 InputMethodManager imm = InputMethodManager.peekInstance(); 1824 if (imm != null && imTarget) { 1825 imm.startGettingWindowFocus(mView); 1826 imm.onWindowFocus(mView, mView.findFocus(), 1827 mWindowAttributes.softInputMode, 1828 !mHasHadWindowFocus, mWindowAttributes.flags); 1829 } 1830 } 1831 } 1832 1833 // Remember if we must report the next draw. 1834 if ((relayoutResult & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 1835 mReportNextDraw = true; 1836 } 1837 1838 boolean cancelDraw = attachInfo.mTreeObserver.dispatchOnPreDraw() || 1839 viewVisibility != View.VISIBLE; 1840 1841 if (!cancelDraw && !newSurface) { 1842 if (!skipDraw || mReportNextDraw) { 1843 if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 1844 for (int i = 0; i < mPendingTransitions.size(); ++i) { 1845 mPendingTransitions.get(i).startChangingAnimations(); 1846 } 1847 mPendingTransitions.clear(); 1848 } 1849 1850 performDraw(); 1851 } 1852 } else { 1853 if (viewVisibility == View.VISIBLE) { 1854 // Try again 1855 scheduleTraversals(); 1856 } else if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 1857 for (int i = 0; i < mPendingTransitions.size(); ++i) { 1858 mPendingTransitions.get(i).endChangingAnimations(); 1859 } 1860 mPendingTransitions.clear(); 1861 } 1862 } 1863 1864 mIsInTraversal = false; 1865 } 1866 1867 private void handleOutOfResourcesException(Surface.OutOfResourcesException e) { 1868 Log.e(TAG, "OutOfResourcesException initializing HW surface", e); 1869 try { 1870 if (!mWindowSession.outOfMemory(mWindow) && 1871 Process.myUid() != Process.SYSTEM_UID) { 1872 Slog.w(TAG, "No processes killed for memory; killing self"); 1873 Process.killProcess(Process.myPid()); 1874 } 1875 } catch (RemoteException ex) { 1876 } 1877 mLayoutRequested = true; // ask wm for a new surface next time. 1878 } 1879 1880 private void performMeasure(int childWidthMeasureSpec, int childHeightMeasureSpec) { 1881 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "measure"); 1882 try { 1883 mView.measure(childWidthMeasureSpec, childHeightMeasureSpec); 1884 } finally { 1885 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 1886 } 1887 } 1888 1889 /** 1890 * Called by {@link android.view.View#isInLayout()} to determine whether the view hierarchy 1891 * is currently undergoing a layout pass. 1892 * 1893 * @return whether the view hierarchy is currently undergoing a layout pass 1894 */ 1895 boolean isInLayout() { 1896 return mInLayout; 1897 } 1898 1899 /** 1900 * Called by {@link android.view.View#requestLayout()} if the view hierarchy is currently 1901 * undergoing a layout pass. requestLayout() should not generally be called during layout, 1902 * unless the container hierarchy knows what it is doing (i.e., it is fine as long as 1903 * all children in that container hierarchy are measured and laid out at the end of the layout 1904 * pass for that container). If requestLayout() is called anyway, we handle it correctly 1905 * by registering all requesters during a frame as it proceeds. At the end of the frame, 1906 * we check all of those views to see if any still have pending layout requests, which 1907 * indicates that they were not correctly handled by their container hierarchy. If that is 1908 * the case, we clear all such flags in the tree, to remove the buggy flag state that leads 1909 * to blank containers, and force a second request/measure/layout pass in this frame. If 1910 * more requestLayout() calls are received during that second layout pass, we post those 1911 * requests to the next frame to avoid possible infinite loops. 1912 * 1913 * <p>The return value from this method indicates whether the request should proceed 1914 * (if it is a request during the first layout pass) or should be skipped and posted to the 1915 * next frame (if it is a request during the second layout pass).</p> 1916 * 1917 * @param view the view that requested the layout. 1918 * 1919 * @return true if request should proceed, false otherwise. 1920 */ 1921 boolean requestLayoutDuringLayout(final View view) { 1922 if (view.mParent == null || view.mAttachInfo == null) { 1923 // Would not normally trigger another layout, so just let it pass through as usual 1924 return true; 1925 } 1926 if (!mLayoutRequesters.contains(view)) { 1927 mLayoutRequesters.add(view); 1928 } 1929 if (!mHandlingLayoutInLayoutRequest) { 1930 // Let the request proceed normally; it will be processed in a second layout pass 1931 // if necessary 1932 return true; 1933 } else { 1934 // Don't let the request proceed during the second layout pass. 1935 // It will post to the next frame instead. 1936 return false; 1937 } 1938 } 1939 1940 private void performLayout(WindowManager.LayoutParams lp, int desiredWindowWidth, 1941 int desiredWindowHeight) { 1942 mLayoutRequested = false; 1943 mScrollMayChange = true; 1944 mInLayout = true; 1945 1946 final View host = mView; 1947 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) { 1948 Log.v(TAG, "Laying out " + host + " to (" + 1949 host.getMeasuredWidth() + ", " + host.getMeasuredHeight() + ")"); 1950 } 1951 1952 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "layout"); 1953 try { 1954 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 1955 1956 mInLayout = false; 1957 int numViewsRequestingLayout = mLayoutRequesters.size(); 1958 if (numViewsRequestingLayout > 0) { 1959 // requestLayout() was called during layout. 1960 // If no layout-request flags are set on the requesting views, there is no problem. 1961 // If some requests are still pending, then we need to clear those flags and do 1962 // a full request/measure/layout pass to handle this situation. 1963 ArrayList<View> validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, 1964 false); 1965 if (validLayoutRequesters != null) { 1966 // Set this flag to indicate that any further requests are happening during 1967 // the second pass, which may result in posting those requests to the next 1968 // frame instead 1969 mHandlingLayoutInLayoutRequest = true; 1970 1971 // Process fresh layout requests, then measure and layout 1972 int numValidRequests = validLayoutRequesters.size(); 1973 for (int i = 0; i < numValidRequests; ++i) { 1974 final View view = validLayoutRequesters.get(i); 1975 Log.w("View", "requestLayout() improperly called by " + view + 1976 " during layout: running second layout pass"); 1977 view.requestLayout(); 1978 } 1979 measureHierarchy(host, lp, mView.getContext().getResources(), 1980 desiredWindowWidth, desiredWindowHeight); 1981 mInLayout = true; 1982 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 1983 1984 mHandlingLayoutInLayoutRequest = false; 1985 1986 // Check the valid requests again, this time without checking/clearing the 1987 // layout flags, since requests happening during the second pass get noop'd 1988 validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, true); 1989 if (validLayoutRequesters != null) { 1990 final ArrayList<View> finalRequesters = validLayoutRequesters; 1991 // Post second-pass requests to the next frame 1992 getRunQueue().post(new Runnable() { 1993 @Override 1994 public void run() { 1995 int numValidRequests = finalRequesters.size(); 1996 for (int i = 0; i < numValidRequests; ++i) { 1997 final View view = finalRequesters.get(i); 1998 Log.w("View", "requestLayout() improperly called by " + view + 1999 " during second layout pass: posting in next frame"); 2000 view.requestLayout(); 2001 } 2002 } 2003 }); 2004 } 2005 } 2006 2007 } 2008 } finally { 2009 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2010 } 2011 mInLayout = false; 2012 } 2013 2014 /** 2015 * This method is called during layout when there have been calls to requestLayout() during 2016 * layout. It walks through the list of views that requested layout to determine which ones 2017 * still need it, based on visibility in the hierarchy and whether they have already been 2018 * handled (as is usually the case with ListView children). 2019 * 2020 * @param layoutRequesters The list of views that requested layout during layout 2021 * @param secondLayoutRequests Whether the requests were issued during the second layout pass. 2022 * If so, the FORCE_LAYOUT flag was not set on requesters. 2023 * @return A list of the actual views that still need to be laid out. 2024 */ 2025 private ArrayList<View> getValidLayoutRequesters(ArrayList<View> layoutRequesters, 2026 boolean secondLayoutRequests) { 2027 2028 int numViewsRequestingLayout = layoutRequesters.size(); 2029 ArrayList<View> validLayoutRequesters = null; 2030 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2031 View view = layoutRequesters.get(i); 2032 if (view != null && view.mAttachInfo != null && view.mParent != null && 2033 (secondLayoutRequests || (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) == 2034 View.PFLAG_FORCE_LAYOUT)) { 2035 boolean gone = false; 2036 View parent = view; 2037 // Only trigger new requests for views in a non-GONE hierarchy 2038 while (parent != null) { 2039 if ((parent.mViewFlags & View.VISIBILITY_MASK) == View.GONE) { 2040 gone = true; 2041 break; 2042 } 2043 if (parent.mParent instanceof View) { 2044 parent = (View) parent.mParent; 2045 } else { 2046 parent = null; 2047 } 2048 } 2049 if (!gone) { 2050 if (validLayoutRequesters == null) { 2051 validLayoutRequesters = new ArrayList<View>(); 2052 } 2053 validLayoutRequesters.add(view); 2054 } 2055 } 2056 } 2057 if (!secondLayoutRequests) { 2058 // If we're checking the layout flags, then we need to clean them up also 2059 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2060 View view = layoutRequesters.get(i); 2061 while (view != null && 2062 (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) != 0) { 2063 view.mPrivateFlags &= ~View.PFLAG_FORCE_LAYOUT; 2064 if (view.mParent instanceof View) { 2065 view = (View) view.mParent; 2066 } else { 2067 view = null; 2068 } 2069 } 2070 } 2071 } 2072 layoutRequesters.clear(); 2073 return validLayoutRequesters; 2074 } 2075 2076 public void requestTransparentRegion(View child) { 2077 // the test below should not fail unless someone is messing with us 2078 checkThread(); 2079 if (mView == child) { 2080 mView.mPrivateFlags |= View.PFLAG_REQUEST_TRANSPARENT_REGIONS; 2081 // Need to make sure we re-evaluate the window attributes next 2082 // time around, to ensure the window has the correct format. 2083 mWindowAttributesChanged = true; 2084 mWindowAttributesChangesFlag = 0; 2085 requestLayout(); 2086 } 2087 } 2088 2089 /** 2090 * Figures out the measure spec for the root view in a window based on it's 2091 * layout params. 2092 * 2093 * @param windowSize 2094 * The available width or height of the window 2095 * 2096 * @param rootDimension 2097 * The layout params for one dimension (width or height) of the 2098 * window. 2099 * 2100 * @return The measure spec to use to measure the root view. 2101 */ 2102 private static int getRootMeasureSpec(int windowSize, int rootDimension) { 2103 int measureSpec; 2104 switch (rootDimension) { 2105 2106 case ViewGroup.LayoutParams.MATCH_PARENT: 2107 // Window can't resize. Force root view to be windowSize. 2108 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.EXACTLY); 2109 break; 2110 case ViewGroup.LayoutParams.WRAP_CONTENT: 2111 // Window can resize. Set max size for root view. 2112 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.AT_MOST); 2113 break; 2114 default: 2115 // Window wants to be an exact size. Force root view to be that size. 2116 measureSpec = MeasureSpec.makeMeasureSpec(rootDimension, MeasureSpec.EXACTLY); 2117 break; 2118 } 2119 return measureSpec; 2120 } 2121 2122 int mHardwareYOffset; 2123 int mResizeAlpha; 2124 final Paint mResizePaint = new Paint(); 2125 2126 public void onHardwarePreDraw(HardwareCanvas canvas) { 2127 canvas.translate(0, -mHardwareYOffset); 2128 } 2129 2130 public void onHardwarePostDraw(HardwareCanvas canvas) { 2131 if (mResizeBuffer != null) { 2132 mResizePaint.setAlpha(mResizeAlpha); 2133 canvas.drawHardwareLayer(mResizeBuffer, 0.0f, mHardwareYOffset, mResizePaint); 2134 } 2135 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2136 } 2137 2138 /** 2139 * @hide 2140 */ 2141 void outputDisplayList(View view) { 2142 if (mAttachInfo != null && mAttachInfo.mHardwareCanvas != null) { 2143 DisplayList displayList = view.getDisplayList(); 2144 if (displayList != null) { 2145 mAttachInfo.mHardwareCanvas.outputDisplayList(displayList); 2146 } 2147 } 2148 } 2149 2150 /** 2151 * @see #PROPERTY_PROFILE_RENDERING 2152 */ 2153 private void profileRendering(boolean enabled) { 2154 if (mProfileRendering) { 2155 mRenderProfilingEnabled = enabled; 2156 2157 if (mRenderProfiler != null) { 2158 mChoreographer.removeFrameCallback(mRenderProfiler); 2159 } 2160 if (mRenderProfilingEnabled) { 2161 if (mRenderProfiler == null) { 2162 mRenderProfiler = new Choreographer.FrameCallback() { 2163 @Override 2164 public void doFrame(long frameTimeNanos) { 2165 mDirty.set(0, 0, mWidth, mHeight); 2166 scheduleTraversals(); 2167 if (mRenderProfilingEnabled) { 2168 mChoreographer.postFrameCallback(mRenderProfiler); 2169 } 2170 } 2171 }; 2172 } 2173 mChoreographer.postFrameCallback(mRenderProfiler); 2174 } else { 2175 mRenderProfiler = null; 2176 } 2177 } 2178 } 2179 2180 /** 2181 * Called from draw() when DEBUG_FPS is enabled 2182 */ 2183 private void trackFPS() { 2184 // Tracks frames per second drawn. First value in a series of draws may be bogus 2185 // because it down not account for the intervening idle time 2186 long nowTime = System.currentTimeMillis(); 2187 if (mFpsStartTime < 0) { 2188 mFpsStartTime = mFpsPrevTime = nowTime; 2189 mFpsNumFrames = 0; 2190 } else { 2191 ++mFpsNumFrames; 2192 String thisHash = Integer.toHexString(System.identityHashCode(this)); 2193 long frameTime = nowTime - mFpsPrevTime; 2194 long totalTime = nowTime - mFpsStartTime; 2195 Log.v(TAG, "0x" + thisHash + "\tFrame time:\t" + frameTime); 2196 mFpsPrevTime = nowTime; 2197 if (totalTime > 1000) { 2198 float fps = (float) mFpsNumFrames * 1000 / totalTime; 2199 Log.v(TAG, "0x" + thisHash + "\tFPS:\t" + fps); 2200 mFpsStartTime = nowTime; 2201 mFpsNumFrames = 0; 2202 } 2203 } 2204 } 2205 2206 private void performDraw() { 2207 if (!mAttachInfo.mScreenOn && !mReportNextDraw) { 2208 return; 2209 } 2210 2211 final boolean fullRedrawNeeded = mFullRedrawNeeded; 2212 mFullRedrawNeeded = false; 2213 2214 mIsDrawing = true; 2215 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "draw"); 2216 try { 2217 draw(fullRedrawNeeded); 2218 } finally { 2219 mIsDrawing = false; 2220 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2221 } 2222 2223 if (mReportNextDraw) { 2224 mReportNextDraw = false; 2225 2226 if (LOCAL_LOGV) { 2227 Log.v(TAG, "FINISHED DRAWING: " + mWindowAttributes.getTitle()); 2228 } 2229 if (mSurfaceHolder != null && mSurface.isValid()) { 2230 mSurfaceHolderCallback.surfaceRedrawNeeded(mSurfaceHolder); 2231 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 2232 if (callbacks != null) { 2233 for (SurfaceHolder.Callback c : callbacks) { 2234 if (c instanceof SurfaceHolder.Callback2) { 2235 ((SurfaceHolder.Callback2)c).surfaceRedrawNeeded( 2236 mSurfaceHolder); 2237 } 2238 } 2239 } 2240 } 2241 try { 2242 mWindowSession.finishDrawing(mWindow); 2243 } catch (RemoteException e) { 2244 } 2245 } 2246 } 2247 2248 private void draw(boolean fullRedrawNeeded) { 2249 Surface surface = mSurface; 2250 if (!surface.isValid()) { 2251 return; 2252 } 2253 2254 if (DEBUG_FPS) { 2255 trackFPS(); 2256 } 2257 2258 if (!sFirstDrawComplete) { 2259 synchronized (sFirstDrawHandlers) { 2260 sFirstDrawComplete = true; 2261 final int count = sFirstDrawHandlers.size(); 2262 for (int i = 0; i< count; i++) { 2263 mHandler.post(sFirstDrawHandlers.get(i)); 2264 } 2265 } 2266 } 2267 2268 scrollToRectOrFocus(null, false); 2269 2270 final AttachInfo attachInfo = mAttachInfo; 2271 if (attachInfo.mViewScrollChanged) { 2272 attachInfo.mViewScrollChanged = false; 2273 attachInfo.mTreeObserver.dispatchOnScrollChanged(); 2274 } 2275 2276 int yoff; 2277 boolean animating = mScroller != null && mScroller.computeScrollOffset(); 2278 if (animating) { 2279 yoff = mScroller.getCurrY(); 2280 } else { 2281 yoff = mScrollY; 2282 } 2283 if (mCurScrollY != yoff) { 2284 mCurScrollY = yoff; 2285 fullRedrawNeeded = true; 2286 } 2287 2288 final float appScale = attachInfo.mApplicationScale; 2289 final boolean scalingRequired = attachInfo.mScalingRequired; 2290 2291 int resizeAlpha = 0; 2292 if (mResizeBuffer != null) { 2293 long deltaTime = SystemClock.uptimeMillis() - mResizeBufferStartTime; 2294 if (deltaTime < mResizeBufferDuration) { 2295 float amt = deltaTime/(float) mResizeBufferDuration; 2296 amt = mResizeInterpolator.getInterpolation(amt); 2297 animating = true; 2298 resizeAlpha = 255 - (int)(amt*255); 2299 } else { 2300 disposeResizeBuffer(); 2301 } 2302 } 2303 2304 final Rect dirty = mDirty; 2305 if (mSurfaceHolder != null) { 2306 // The app owns the surface, we won't draw. 2307 dirty.setEmpty(); 2308 if (animating) { 2309 if (mScroller != null) { 2310 mScroller.abortAnimation(); 2311 } 2312 disposeResizeBuffer(); 2313 } 2314 return; 2315 } 2316 2317 if (fullRedrawNeeded) { 2318 attachInfo.mIgnoreDirtyState = true; 2319 dirty.set(0, 0, (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 2320 } 2321 2322 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2323 Log.v(TAG, "Draw " + mView + "/" 2324 + mWindowAttributes.getTitle() 2325 + ": dirty={" + dirty.left + "," + dirty.top 2326 + "," + dirty.right + "," + dirty.bottom + "} surface=" 2327 + surface + " surface.isValid()=" + surface.isValid() + ", appScale:" + 2328 appScale + ", width=" + mWidth + ", height=" + mHeight); 2329 } 2330 2331 invalidateDisplayLists(); 2332 2333 attachInfo.mTreeObserver.dispatchOnDraw(); 2334 2335 if (!dirty.isEmpty() || mIsAnimating) { 2336 if (attachInfo.mHardwareRenderer != null && attachInfo.mHardwareRenderer.isEnabled()) { 2337 // Draw with hardware renderer. 2338 mIsAnimating = false; 2339 mHardwareYOffset = yoff; 2340 mResizeAlpha = resizeAlpha; 2341 2342 mCurrentDirty.set(dirty); 2343 dirty.setEmpty(); 2344 2345 attachInfo.mHardwareRenderer.draw(mView, attachInfo, this, 2346 animating ? null : mCurrentDirty); 2347 } else { 2348 // If we get here with a disabled & requested hardware renderer, something went 2349 // wrong (an invalidate posted right before we destroyed the hardware surface 2350 // for instance) so we should just bail out. Locking the surface with software 2351 // rendering at this point would lock it forever and prevent hardware renderer 2352 // from doing its job when it comes back. 2353 // Before we request a new frame we must however attempt to reinitiliaze the 2354 // hardware renderer if it's in requested state. This would happen after an 2355 // eglTerminate() for instance. 2356 if (attachInfo.mHardwareRenderer != null && 2357 !attachInfo.mHardwareRenderer.isEnabled() && 2358 attachInfo.mHardwareRenderer.isRequested()) { 2359 2360 try { 2361 attachInfo.mHardwareRenderer.initializeIfNeeded(mWidth, mHeight, 2362 mHolder.getSurface()); 2363 } catch (Surface.OutOfResourcesException e) { 2364 handleOutOfResourcesException(e); 2365 return; 2366 } 2367 2368 mFullRedrawNeeded = true; 2369 scheduleTraversals(); 2370 return; 2371 } 2372 2373 if (!drawSoftware(surface, attachInfo, yoff, scalingRequired, dirty)) { 2374 return; 2375 } 2376 } 2377 } 2378 2379 if (animating) { 2380 mFullRedrawNeeded = true; 2381 scheduleTraversals(); 2382 } 2383 } 2384 2385 /** 2386 * @return true if drawing was succesfull, false if an error occurred 2387 */ 2388 private boolean drawSoftware(Surface surface, AttachInfo attachInfo, int yoff, 2389 boolean scalingRequired, Rect dirty) { 2390 2391 // Draw with software renderer. 2392 Canvas canvas; 2393 try { 2394 int left = dirty.left; 2395 int top = dirty.top; 2396 int right = dirty.right; 2397 int bottom = dirty.bottom; 2398 2399 canvas = mSurface.lockCanvas(dirty); 2400 2401 // The dirty rectangle can be modified by Surface.lockCanvas() 2402 //noinspection ConstantConditions 2403 if (left != dirty.left || top != dirty.top || right != dirty.right || 2404 bottom != dirty.bottom) { 2405 attachInfo.mIgnoreDirtyState = true; 2406 } 2407 2408 // TODO: Do this in native 2409 canvas.setDensity(mDensity); 2410 } catch (Surface.OutOfResourcesException e) { 2411 handleOutOfResourcesException(e); 2412 return false; 2413 } catch (IllegalArgumentException e) { 2414 Log.e(TAG, "Could not lock surface", e); 2415 // Don't assume this is due to out of memory, it could be 2416 // something else, and if it is something else then we could 2417 // kill stuff (or ourself) for no reason. 2418 mLayoutRequested = true; // ask wm for a new surface next time. 2419 return false; 2420 } 2421 2422 try { 2423 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2424 Log.v(TAG, "Surface " + surface + " drawing to bitmap w=" 2425 + canvas.getWidth() + ", h=" + canvas.getHeight()); 2426 //canvas.drawARGB(255, 255, 0, 0); 2427 } 2428 2429 // If this bitmap's format includes an alpha channel, we 2430 // need to clear it before drawing so that the child will 2431 // properly re-composite its drawing on a transparent 2432 // background. This automatically respects the clip/dirty region 2433 // or 2434 // If we are applying an offset, we need to clear the area 2435 // where the offset doesn't appear to avoid having garbage 2436 // left in the blank areas. 2437 if (!canvas.isOpaque() || yoff != 0) { 2438 canvas.drawColor(0, PorterDuff.Mode.CLEAR); 2439 } 2440 2441 dirty.setEmpty(); 2442 mIsAnimating = false; 2443 attachInfo.mDrawingTime = SystemClock.uptimeMillis(); 2444 mView.mPrivateFlags |= View.PFLAG_DRAWN; 2445 2446 if (DEBUG_DRAW) { 2447 Context cxt = mView.getContext(); 2448 Log.i(TAG, "Drawing: package:" + cxt.getPackageName() + 2449 ", metrics=" + cxt.getResources().getDisplayMetrics() + 2450 ", compatibilityInfo=" + cxt.getResources().getCompatibilityInfo()); 2451 } 2452 try { 2453 canvas.translate(0, -yoff); 2454 if (mTranslator != null) { 2455 mTranslator.translateCanvas(canvas); 2456 } 2457 canvas.setScreenDensity(scalingRequired ? mNoncompatDensity : 0); 2458 attachInfo.mSetIgnoreDirtyState = false; 2459 2460 mView.draw(canvas); 2461 2462 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2463 } finally { 2464 if (!attachInfo.mSetIgnoreDirtyState) { 2465 // Only clear the flag if it was not set during the mView.draw() call 2466 attachInfo.mIgnoreDirtyState = false; 2467 } 2468 } 2469 } finally { 2470 try { 2471 surface.unlockCanvasAndPost(canvas); 2472 } catch (IllegalArgumentException e) { 2473 Log.e(TAG, "Could not unlock surface", e); 2474 mLayoutRequested = true; // ask wm for a new surface next time. 2475 //noinspection ReturnInsideFinallyBlock 2476 return false; 2477 } 2478 2479 if (LOCAL_LOGV) { 2480 Log.v(TAG, "Surface " + surface + " unlockCanvasAndPost"); 2481 } 2482 } 2483 return true; 2484 } 2485 2486 /** 2487 * We want to draw a highlight around the current accessibility focused. 2488 * Since adding a style for all possible view is not a viable option we 2489 * have this specialized drawing method. 2490 * 2491 * Note: We are doing this here to be able to draw the highlight for 2492 * virtual views in addition to real ones. 2493 * 2494 * @param canvas The canvas on which to draw. 2495 */ 2496 private void drawAccessibilityFocusedDrawableIfNeeded(Canvas canvas) { 2497 AccessibilityManager manager = AccessibilityManager.getInstance(mView.mContext); 2498 if (!manager.isEnabled() || !manager.isTouchExplorationEnabled()) { 2499 return; 2500 } 2501 if (mAccessibilityFocusedHost == null || mAccessibilityFocusedHost.mAttachInfo == null) { 2502 return; 2503 } 2504 Drawable drawable = getAccessibilityFocusedDrawable(); 2505 if (drawable == null) { 2506 return; 2507 } 2508 AccessibilityNodeProvider provider = 2509 mAccessibilityFocusedHost.getAccessibilityNodeProvider(); 2510 Rect bounds = mView.mAttachInfo.mTmpInvalRect; 2511 if (provider == null) { 2512 mAccessibilityFocusedHost.getBoundsOnScreen(bounds); 2513 } else { 2514 if (mAccessibilityFocusedVirtualView == null) { 2515 return; 2516 } 2517 mAccessibilityFocusedVirtualView.getBoundsInScreen(bounds); 2518 } 2519 bounds.offset(-mAttachInfo.mWindowLeft, -mAttachInfo.mWindowTop); 2520 bounds.intersect(0, 0, mAttachInfo.mViewRootImpl.mWidth, mAttachInfo.mViewRootImpl.mHeight); 2521 drawable.setBounds(bounds); 2522 drawable.draw(canvas); 2523 } 2524 2525 private Drawable getAccessibilityFocusedDrawable() { 2526 if (mAttachInfo != null) { 2527 // Lazily load the accessibility focus drawable. 2528 if (mAttachInfo.mAccessibilityFocusDrawable == null) { 2529 TypedValue value = new TypedValue(); 2530 final boolean resolved = mView.mContext.getTheme().resolveAttribute( 2531 R.attr.accessibilityFocusedDrawable, value, true); 2532 if (resolved) { 2533 mAttachInfo.mAccessibilityFocusDrawable = 2534 mView.mContext.getResources().getDrawable(value.resourceId); 2535 } 2536 } 2537 return mAttachInfo.mAccessibilityFocusDrawable; 2538 } 2539 return null; 2540 } 2541 2542 void invalidateDisplayLists() { 2543 final ArrayList<DisplayList> displayLists = mDisplayLists; 2544 final int count = displayLists.size(); 2545 2546 for (int i = 0; i < count; i++) { 2547 final DisplayList displayList = displayLists.get(i); 2548 if (displayList.isDirty()) { 2549 displayList.reset(); 2550 } 2551 } 2552 2553 displayLists.clear(); 2554 } 2555 2556 /** 2557 * @hide 2558 */ 2559 public void setDrawDuringWindowsAnimating(boolean value) { 2560 mDrawDuringWindowsAnimating = value; 2561 if (value) { 2562 handleDispatchDoneAnimating(); 2563 } 2564 } 2565 2566 boolean scrollToRectOrFocus(Rect rectangle, boolean immediate) { 2567 final View.AttachInfo attachInfo = mAttachInfo; 2568 final Rect ci = attachInfo.mContentInsets; 2569 final Rect vi = attachInfo.mVisibleInsets; 2570 int scrollY = 0; 2571 boolean handled = false; 2572 2573 if (vi.left > ci.left || vi.top > ci.top 2574 || vi.right > ci.right || vi.bottom > ci.bottom) { 2575 // We'll assume that we aren't going to change the scroll 2576 // offset, since we want to avoid that unless it is actually 2577 // going to make the focus visible... otherwise we scroll 2578 // all over the place. 2579 scrollY = mScrollY; 2580 // We can be called for two different situations: during a draw, 2581 // to update the scroll position if the focus has changed (in which 2582 // case 'rectangle' is null), or in response to a 2583 // requestChildRectangleOnScreen() call (in which case 'rectangle' 2584 // is non-null and we just want to scroll to whatever that 2585 // rectangle is). 2586 final View focus = mView.findFocus(); 2587 if (focus == null) { 2588 return false; 2589 } 2590 View lastScrolledFocus = (mLastScrolledFocus != null) ? mLastScrolledFocus.get() : null; 2591 if (focus != lastScrolledFocus) { 2592 // If the focus has changed, then ignore any requests to scroll 2593 // to a rectangle; first we want to make sure the entire focus 2594 // view is visible. 2595 rectangle = null; 2596 } 2597 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Eval scroll: focus=" + focus 2598 + " rectangle=" + rectangle + " ci=" + ci 2599 + " vi=" + vi); 2600 if (focus == lastScrolledFocus && !mScrollMayChange && rectangle == null) { 2601 // Optimization: if the focus hasn't changed since last 2602 // time, and no layout has happened, then just leave things 2603 // as they are. 2604 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Keeping scroll y=" 2605 + mScrollY + " vi=" + vi.toShortString()); 2606 } else { 2607 // We need to determine if the currently focused view is 2608 // within the visible part of the window and, if not, apply 2609 // a pan so it can be seen. 2610 mLastScrolledFocus = new WeakReference<View>(focus); 2611 mScrollMayChange = false; 2612 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Need to scroll?"); 2613 // Try to find the rectangle from the focus view. 2614 if (focus.getGlobalVisibleRect(mVisRect, null)) { 2615 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Root w=" 2616 + mView.getWidth() + " h=" + mView.getHeight() 2617 + " ci=" + ci.toShortString() 2618 + " vi=" + vi.toShortString()); 2619 if (rectangle == null) { 2620 focus.getFocusedRect(mTempRect); 2621 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Focus " + focus 2622 + ": focusRect=" + mTempRect.toShortString()); 2623 if (mView instanceof ViewGroup) { 2624 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 2625 focus, mTempRect); 2626 } 2627 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2628 "Focus in window: focusRect=" 2629 + mTempRect.toShortString() 2630 + " visRect=" + mVisRect.toShortString()); 2631 } else { 2632 mTempRect.set(rectangle); 2633 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2634 "Request scroll to rect: " 2635 + mTempRect.toShortString() 2636 + " visRect=" + mVisRect.toShortString()); 2637 } 2638 if (mTempRect.intersect(mVisRect)) { 2639 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2640 "Focus window visible rect: " 2641 + mTempRect.toShortString()); 2642 if (mTempRect.height() > 2643 (mView.getHeight()-vi.top-vi.bottom)) { 2644 // If the focus simply is not going to fit, then 2645 // best is probably just to leave things as-is. 2646 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2647 "Too tall; leaving scrollY=" + scrollY); 2648 } else if ((mTempRect.top-scrollY) < vi.top) { 2649 scrollY -= vi.top - (mTempRect.top-scrollY); 2650 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2651 "Top covered; scrollY=" + scrollY); 2652 } else if ((mTempRect.bottom-scrollY) 2653 > (mView.getHeight()-vi.bottom)) { 2654 scrollY += (mTempRect.bottom-scrollY) 2655 - (mView.getHeight()-vi.bottom); 2656 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2657 "Bottom covered; scrollY=" + scrollY); 2658 } 2659 handled = true; 2660 } 2661 } 2662 } 2663 } 2664 2665 if (scrollY != mScrollY) { 2666 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Pan scroll changed: old=" 2667 + mScrollY + " , new=" + scrollY); 2668 if (!immediate && mResizeBuffer == null) { 2669 if (mScroller == null) { 2670 mScroller = new Scroller(mView.getContext()); 2671 } 2672 mScroller.startScroll(0, mScrollY, 0, scrollY-mScrollY); 2673 } else if (mScroller != null) { 2674 mScroller.abortAnimation(); 2675 } 2676 mScrollY = scrollY; 2677 } 2678 2679 return handled; 2680 } 2681 2682 /** 2683 * @hide 2684 */ 2685 public View getAccessibilityFocusedHost() { 2686 return mAccessibilityFocusedHost; 2687 } 2688 2689 /** 2690 * @hide 2691 */ 2692 public AccessibilityNodeInfo getAccessibilityFocusedVirtualView() { 2693 return mAccessibilityFocusedVirtualView; 2694 } 2695 2696 void setAccessibilityFocus(View view, AccessibilityNodeInfo node) { 2697 // If we have a virtual view with accessibility focus we need 2698 // to clear the focus and invalidate the virtual view bounds. 2699 if (mAccessibilityFocusedVirtualView != null) { 2700 2701 AccessibilityNodeInfo focusNode = mAccessibilityFocusedVirtualView; 2702 View focusHost = mAccessibilityFocusedHost; 2703 2704 // Wipe the state of the current accessibility focus since 2705 // the call into the provider to clear accessibility focus 2706 // will fire an accessibility event which will end up calling 2707 // this method and we want to have clean state when this 2708 // invocation happens. 2709 mAccessibilityFocusedHost = null; 2710 mAccessibilityFocusedVirtualView = null; 2711 2712 // Clear accessibility focus on the host after clearing state since 2713 // this method may be reentrant. 2714 focusHost.clearAccessibilityFocusNoCallbacks(); 2715 2716 AccessibilityNodeProvider provider = focusHost.getAccessibilityNodeProvider(); 2717 if (provider != null) { 2718 // Invalidate the area of the cleared accessibility focus. 2719 focusNode.getBoundsInParent(mTempRect); 2720 focusHost.invalidate(mTempRect); 2721 // Clear accessibility focus in the virtual node. 2722 final int virtualNodeId = AccessibilityNodeInfo.getVirtualDescendantId( 2723 focusNode.getSourceNodeId()); 2724 provider.performAction(virtualNodeId, 2725 AccessibilityNodeInfo.ACTION_CLEAR_ACCESSIBILITY_FOCUS, null); 2726 } 2727 focusNode.recycle(); 2728 } 2729 if (mAccessibilityFocusedHost != null) { 2730 // Clear accessibility focus in the view. 2731 mAccessibilityFocusedHost.clearAccessibilityFocusNoCallbacks(); 2732 } 2733 2734 // Set the new focus host and node. 2735 mAccessibilityFocusedHost = view; 2736 mAccessibilityFocusedVirtualView = node; 2737 } 2738 2739 public void requestChildFocus(View child, View focused) { 2740 if (DEBUG_INPUT_RESIZE) { 2741 Log.v(TAG, "Request child focus: focus now " + focused); 2742 } 2743 checkThread(); 2744 scheduleTraversals(); 2745 } 2746 2747 public void clearChildFocus(View child) { 2748 if (DEBUG_INPUT_RESIZE) { 2749 Log.v(TAG, "Clearing child focus"); 2750 } 2751 checkThread(); 2752 scheduleTraversals(); 2753 } 2754 2755 @Override 2756 public ViewParent getParentForAccessibility() { 2757 return null; 2758 } 2759 2760 public void focusableViewAvailable(View v) { 2761 checkThread(); 2762 if (mView != null) { 2763 if (!mView.hasFocus()) { 2764 v.requestFocus(); 2765 } else { 2766 // the one case where will transfer focus away from the current one 2767 // is if the current view is a view group that prefers to give focus 2768 // to its children first AND the view is a descendant of it. 2769 View focused = mView.findFocus(); 2770 if (focused instanceof ViewGroup) { 2771 ViewGroup group = (ViewGroup) focused; 2772 if (group.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 2773 && isViewDescendantOf(v, focused)) { 2774 v.requestFocus(); 2775 } 2776 } 2777 } 2778 } 2779 } 2780 2781 public void recomputeViewAttributes(View child) { 2782 checkThread(); 2783 if (mView == child) { 2784 mAttachInfo.mRecomputeGlobalAttributes = true; 2785 if (!mWillDrawSoon) { 2786 scheduleTraversals(); 2787 } 2788 } 2789 } 2790 2791 void dispatchDetachedFromWindow() { 2792 if (mView != null && mView.mAttachInfo != null) { 2793 if (mAttachInfo.mHardwareRenderer != null && 2794 mAttachInfo.mHardwareRenderer.isEnabled()) { 2795 mAttachInfo.mHardwareRenderer.validate(); 2796 } 2797 mAttachInfo.mTreeObserver.dispatchOnWindowAttachedChange(false); 2798 mView.dispatchDetachedFromWindow(); 2799 } 2800 2801 mAccessibilityInteractionConnectionManager.ensureNoConnection(); 2802 mAccessibilityManager.removeAccessibilityStateChangeListener( 2803 mAccessibilityInteractionConnectionManager); 2804 removeSendWindowContentChangedCallback(); 2805 2806 destroyHardwareRenderer(); 2807 2808 setAccessibilityFocus(null, null); 2809 2810 mView.assignParent(null); 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 = mDisplayAdjustments.getCompatibilityInfo(); 2849 if (!ci.equals(CompatibilityInfo.DEFAULT_COMPATIBILITY_INFO)) { 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_INPUT_EVENT = 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_INPUT_EVENT: 2942 return "MSG_DISPATCH_INPUT_EVENT"; 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 !isInLocalFocusMode()) { 3094 imm.startGettingWindowFocus(mView); 3095 } 3096 mAttachInfo.mKeyDispatchState.reset(); 3097 mView.dispatchWindowFocusChanged(hasWindowFocus); 3098 mAttachInfo.mTreeObserver.dispatchOnWindowFocusChange(hasWindowFocus); 3099 } 3100 3101 // Note: must be done after the focus change callbacks, 3102 // so all of the view state is set up correctly. 3103 if (hasWindowFocus) { 3104 if (imm != null && mLastWasImTarget && !isInLocalFocusMode()) { 3105 imm.onWindowFocus(mView, mView.findFocus(), 3106 mWindowAttributes.softInputMode, 3107 !mHasHadWindowFocus, mWindowAttributes.flags); 3108 } 3109 // Clear the forward bit. We can just do this directly, since 3110 // the window manager doesn't care about it. 3111 mWindowAttributes.softInputMode &= 3112 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3113 ((WindowManager.LayoutParams)mView.getLayoutParams()) 3114 .softInputMode &= 3115 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3116 mHasHadWindowFocus = true; 3117 } 3118 3119 setAccessibilityFocus(null, null); 3120 3121 if (mView != null && mAccessibilityManager.isEnabled()) { 3122 if (hasWindowFocus) { 3123 mView.sendAccessibilityEvent( 3124 AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 3125 } 3126 } 3127 } 3128 } break; 3129 case MSG_DIE: 3130 doDie(); 3131 break; 3132 case MSG_DISPATCH_INPUT_EVENT: { 3133 InputEvent event = (InputEvent)msg.obj; 3134 enqueueInputEvent(event, null, 0, true); 3135 } break; 3136 case MSG_DISPATCH_KEY_FROM_IME: { 3137 if (LOCAL_LOGV) Log.v( 3138 TAG, "Dispatching key " 3139 + msg.obj + " from IME to " + mView); 3140 KeyEvent event = (KeyEvent)msg.obj; 3141 if ((event.getFlags()&KeyEvent.FLAG_FROM_SYSTEM) != 0) { 3142 // The IME is trying to say this event is from the 3143 // system! Bad bad bad! 3144 //noinspection UnusedAssignment 3145 event = KeyEvent.changeFlags(event, event.getFlags() & ~KeyEvent.FLAG_FROM_SYSTEM); 3146 } 3147 enqueueInputEvent(event, null, QueuedInputEvent.FLAG_DELIVER_POST_IME, true); 3148 } break; 3149 case MSG_FINISH_INPUT_CONNECTION: { 3150 InputMethodManager imm = InputMethodManager.peekInstance(); 3151 if (imm != null) { 3152 imm.reportFinishInputConnection((InputConnection)msg.obj); 3153 } 3154 } break; 3155 case MSG_CHECK_FOCUS: { 3156 InputMethodManager imm = InputMethodManager.peekInstance(); 3157 if (imm != null) { 3158 imm.checkFocus(); 3159 } 3160 } break; 3161 case MSG_CLOSE_SYSTEM_DIALOGS: { 3162 if (mView != null) { 3163 mView.onCloseSystemDialogs((String)msg.obj); 3164 } 3165 } break; 3166 case MSG_DISPATCH_DRAG_EVENT: 3167 case MSG_DISPATCH_DRAG_LOCATION_EVENT: { 3168 DragEvent event = (DragEvent)msg.obj; 3169 event.mLocalState = mLocalDragState; // only present when this app called startDrag() 3170 handleDragEvent(event); 3171 } break; 3172 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: { 3173 handleDispatchSystemUiVisibilityChanged((SystemUiVisibilityInfo) msg.obj); 3174 } break; 3175 case MSG_UPDATE_CONFIGURATION: { 3176 Configuration config = (Configuration)msg.obj; 3177 if (config.isOtherSeqNewer(mLastConfiguration)) { 3178 config = mLastConfiguration; 3179 } 3180 updateConfiguration(config, false); 3181 } break; 3182 case MSG_DISPATCH_SCREEN_STATE: { 3183 if (mView != null) { 3184 handleScreenStateChange(msg.arg1 == 1); 3185 } 3186 } break; 3187 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: { 3188 setAccessibilityFocus(null, null); 3189 } break; 3190 case MSG_DISPATCH_DONE_ANIMATING: { 3191 handleDispatchDoneAnimating(); 3192 } break; 3193 case MSG_INVALIDATE_WORLD: { 3194 if (mView != null) { 3195 invalidateWorld(mView); 3196 } 3197 } break; 3198 case MSG_FLUSH_LAYER_UPDATES: { 3199 flushHardwareLayerUpdates(); 3200 } break; 3201 } 3202 } 3203 } 3204 3205 final ViewRootHandler mHandler = new ViewRootHandler(); 3206 3207 /** 3208 * Something in the current window tells us we need to change the touch mode. For 3209 * example, we are not in touch mode, and the user touches the screen. 3210 * 3211 * If the touch mode has changed, tell the window manager, and handle it locally. 3212 * 3213 * @param inTouchMode Whether we want to be in touch mode. 3214 * @return True if the touch mode changed and focus changed was changed as a result 3215 */ 3216 boolean ensureTouchMode(boolean inTouchMode) { 3217 if (DBG) Log.d("touchmode", "ensureTouchMode(" + inTouchMode + "), current " 3218 + "touch mode is " + mAttachInfo.mInTouchMode); 3219 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3220 3221 // tell the window manager 3222 try { 3223 if (!isInLocalFocusMode()) { 3224 mWindowSession.setInTouchMode(inTouchMode); 3225 } 3226 } catch (RemoteException e) { 3227 throw new RuntimeException(e); 3228 } 3229 3230 // handle the change 3231 return ensureTouchModeLocally(inTouchMode); 3232 } 3233 3234 /** 3235 * Ensure that the touch mode for this window is set, and if it is changing, 3236 * take the appropriate action. 3237 * @param inTouchMode Whether we want to be in touch mode. 3238 * @return True if the touch mode changed and focus changed was changed as a result 3239 */ 3240 private boolean ensureTouchModeLocally(boolean inTouchMode) { 3241 if (DBG) Log.d("touchmode", "ensureTouchModeLocally(" + inTouchMode + "), current " 3242 + "touch mode is " + mAttachInfo.mInTouchMode); 3243 3244 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3245 3246 mAttachInfo.mInTouchMode = inTouchMode; 3247 mAttachInfo.mTreeObserver.dispatchOnTouchModeChanged(inTouchMode); 3248 3249 return (inTouchMode) ? enterTouchMode() : leaveTouchMode(); 3250 } 3251 3252 private boolean enterTouchMode() { 3253 if (mView != null && mView.hasFocus()) { 3254 // note: not relying on mFocusedView here because this could 3255 // be when the window is first being added, and mFocused isn't 3256 // set yet. 3257 final View focused = mView.findFocus(); 3258 if (focused != null && !focused.isFocusableInTouchMode()) { 3259 final ViewGroup ancestorToTakeFocus = findAncestorToTakeFocusInTouchMode(focused); 3260 if (ancestorToTakeFocus != null) { 3261 // there is an ancestor that wants focus after its 3262 // descendants that is focusable in touch mode.. give it 3263 // focus 3264 return ancestorToTakeFocus.requestFocus(); 3265 } else { 3266 // There's nothing to focus. Clear and propagate through the 3267 // hierarchy, but don't attempt to place new focus. 3268 focused.clearFocusInternal(true, false); 3269 return true; 3270 } 3271 } 3272 } 3273 return false; 3274 } 3275 3276 /** 3277 * Find an ancestor of focused that wants focus after its descendants and is 3278 * focusable in touch mode. 3279 * @param focused The currently focused view. 3280 * @return An appropriate view, or null if no such view exists. 3281 */ 3282 private static ViewGroup findAncestorToTakeFocusInTouchMode(View focused) { 3283 ViewParent parent = focused.getParent(); 3284 while (parent instanceof ViewGroup) { 3285 final ViewGroup vgParent = (ViewGroup) parent; 3286 if (vgParent.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 3287 && vgParent.isFocusableInTouchMode()) { 3288 return vgParent; 3289 } 3290 if (vgParent.isRootNamespace()) { 3291 return null; 3292 } else { 3293 parent = vgParent.getParent(); 3294 } 3295 } 3296 return null; 3297 } 3298 3299 private boolean leaveTouchMode() { 3300 if (mView != null) { 3301 if (mView.hasFocus()) { 3302 View focusedView = mView.findFocus(); 3303 if (!(focusedView instanceof ViewGroup)) { 3304 // some view has focus, let it keep it 3305 return false; 3306 } else if (((ViewGroup) focusedView).getDescendantFocusability() != 3307 ViewGroup.FOCUS_AFTER_DESCENDANTS) { 3308 // some view group has focus, and doesn't prefer its children 3309 // over itself for focus, so let them keep it. 3310 return false; 3311 } 3312 } 3313 3314 // find the best view to give focus to in this brave new non-touch-mode 3315 // world 3316 final View focused = focusSearch(null, View.FOCUS_DOWN); 3317 if (focused != null) { 3318 return focused.requestFocus(View.FOCUS_DOWN); 3319 } 3320 } 3321 return false; 3322 } 3323 3324 /** 3325 * Base class for implementing a stage in the chain of responsibility 3326 * for processing input events. 3327 * <p> 3328 * Events are delivered to the stage by the {@link #deliver} method. The stage 3329 * then has the choice of finishing the event or forwarding it to the next stage. 3330 * </p> 3331 */ 3332 abstract class InputStage { 3333 private final InputStage mNext; 3334 3335 protected static final int FORWARD = 0; 3336 protected static final int FINISH_HANDLED = 1; 3337 protected static final int FINISH_NOT_HANDLED = 2; 3338 3339 /** 3340 * Creates an input stage. 3341 * @param next The next stage to which events should be forwarded. 3342 */ 3343 public InputStage(InputStage next) { 3344 mNext = next; 3345 } 3346 3347 /** 3348 * Delivers an event to be processed. 3349 */ 3350 public final void deliver(QueuedInputEvent q) { 3351 if ((q.mFlags & QueuedInputEvent.FLAG_FINISHED) != 0) { 3352 forward(q); 3353 } else if (mView == null || !mAdded) { 3354 Slog.w(TAG, "Dropping event due to root view being removed: " + q.mEvent); 3355 finish(q, false); 3356 } else if (!mAttachInfo.mHasWindowFocus && 3357 !q.mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER) && 3358 !isTerminalInputEvent(q.mEvent)) { 3359 // If this is a focused event and the window doesn't currently have input focus, 3360 // then drop this event. This could be an event that came back from the previous 3361 // stage but the window has lost focus in the meantime. 3362 Slog.w(TAG, "Dropping event due to no window focus: " + q.mEvent); 3363 finish(q, false); 3364 } else { 3365 apply(q, onProcess(q)); 3366 } 3367 } 3368 3369 /** 3370 * Marks the the input event as finished then forwards it to the next stage. 3371 */ 3372 protected void finish(QueuedInputEvent q, boolean handled) { 3373 q.mFlags |= QueuedInputEvent.FLAG_FINISHED; 3374 if (handled) { 3375 q.mFlags |= QueuedInputEvent.FLAG_FINISHED_HANDLED; 3376 } 3377 forward(q); 3378 } 3379 3380 /** 3381 * Forwards the event to the next stage. 3382 */ 3383 protected void forward(QueuedInputEvent q) { 3384 onDeliverToNext(q); 3385 } 3386 3387 /** 3388 * Applies a result code from {@link #onProcess} to the specified event. 3389 */ 3390 protected void apply(QueuedInputEvent q, int result) { 3391 if (result == FORWARD) { 3392 forward(q); 3393 } else if (result == FINISH_HANDLED) { 3394 finish(q, true); 3395 } else if (result == FINISH_NOT_HANDLED) { 3396 finish(q, false); 3397 } else { 3398 throw new IllegalArgumentException("Invalid result: " + result); 3399 } 3400 } 3401 3402 /** 3403 * Called when an event is ready to be processed. 3404 * @return A result code indicating how the event was handled. 3405 */ 3406 protected int onProcess(QueuedInputEvent q) { 3407 return FORWARD; 3408 } 3409 3410 /** 3411 * Called when an event is being delivered to the next stage. 3412 */ 3413 protected void onDeliverToNext(QueuedInputEvent q) { 3414 if (mNext != null) { 3415 mNext.deliver(q); 3416 } else { 3417 finishInputEvent(q); 3418 } 3419 } 3420 } 3421 3422 /** 3423 * Base class for implementing an input pipeline stage that supports 3424 * asynchronous and out-of-order processing of input events. 3425 * <p> 3426 * In addition to what a normal input stage can do, an asynchronous 3427 * input stage may also defer an input event that has been delivered to it 3428 * and finish or forward it later. 3429 * </p> 3430 */ 3431 abstract class AsyncInputStage extends InputStage { 3432 private final String mTraceCounter; 3433 3434 private QueuedInputEvent mQueueHead; 3435 private QueuedInputEvent mQueueTail; 3436 private int mQueueLength; 3437 3438 protected static final int DEFER = 3; 3439 3440 /** 3441 * Creates an asynchronous input stage. 3442 * @param next The next stage to which events should be forwarded. 3443 * @param traceCounter The name of a counter to record the size of 3444 * the queue of pending events. 3445 */ 3446 public AsyncInputStage(InputStage next, String traceCounter) { 3447 super(next); 3448 mTraceCounter = traceCounter; 3449 } 3450 3451 /** 3452 * Marks the event as deferred, which is to say that it will be handled 3453 * asynchronously. The caller is responsible for calling {@link #forward} 3454 * or {@link #finish} later when it is done handling the event. 3455 */ 3456 protected void defer(QueuedInputEvent q) { 3457 q.mFlags |= QueuedInputEvent.FLAG_DEFERRED; 3458 enqueue(q); 3459 } 3460 3461 @Override 3462 protected void forward(QueuedInputEvent q) { 3463 // Clear the deferred flag. 3464 q.mFlags &= ~QueuedInputEvent.FLAG_DEFERRED; 3465 3466 // Fast path if the queue is empty. 3467 QueuedInputEvent curr = mQueueHead; 3468 if (curr == null) { 3469 super.forward(q); 3470 return; 3471 } 3472 3473 // Determine whether the event must be serialized behind any others 3474 // before it can be delivered to the next stage. This is done because 3475 // deferred events might be handled out of order by the stage. 3476 final int deviceId = q.mEvent.getDeviceId(); 3477 QueuedInputEvent prev = null; 3478 boolean blocked = false; 3479 while (curr != null && curr != q) { 3480 if (!blocked && deviceId == curr.mEvent.getDeviceId()) { 3481 blocked = true; 3482 } 3483 prev = curr; 3484 curr = curr.mNext; 3485 } 3486 3487 // If the event is blocked, then leave it in the queue to be delivered later. 3488 // Note that the event might not yet be in the queue if it was not previously 3489 // deferred so we will enqueue it if needed. 3490 if (blocked) { 3491 if (curr == null) { 3492 enqueue(q); 3493 } 3494 return; 3495 } 3496 3497 // The event is not blocked. Deliver it immediately. 3498 if (curr != null) { 3499 curr = curr.mNext; 3500 dequeue(q, prev); 3501 } 3502 super.forward(q); 3503 3504 // Dequeuing this event may have unblocked successors. Deliver them. 3505 while (curr != null) { 3506 if (deviceId == curr.mEvent.getDeviceId()) { 3507 if ((curr.mFlags & QueuedInputEvent.FLAG_DEFERRED) != 0) { 3508 break; 3509 } 3510 QueuedInputEvent next = curr.mNext; 3511 dequeue(curr, prev); 3512 super.forward(curr); 3513 curr = next; 3514 } else { 3515 prev = curr; 3516 curr = curr.mNext; 3517 } 3518 } 3519 } 3520 3521 @Override 3522 protected void apply(QueuedInputEvent q, int result) { 3523 if (result == DEFER) { 3524 defer(q); 3525 } else { 3526 super.apply(q, result); 3527 } 3528 } 3529 3530 private void enqueue(QueuedInputEvent q) { 3531 if (mQueueTail == null) { 3532 mQueueHead = q; 3533 mQueueTail = q; 3534 } else { 3535 mQueueTail.mNext = q; 3536 mQueueTail = q; 3537 } 3538 3539 mQueueLength += 1; 3540 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 3541 } 3542 3543 private void dequeue(QueuedInputEvent q, QueuedInputEvent prev) { 3544 if (prev == null) { 3545 mQueueHead = q.mNext; 3546 } else { 3547 prev.mNext = q.mNext; 3548 } 3549 if (mQueueTail == q) { 3550 mQueueTail = prev; 3551 } 3552 q.mNext = null; 3553 3554 mQueueLength -= 1; 3555 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 3556 } 3557 } 3558 3559 /** 3560 * Delivers pre-ime input events to a native activity. 3561 * Does not support pointer events. 3562 */ 3563 final class NativePreImeInputStage extends AsyncInputStage 3564 implements InputQueue.FinishedInputEventCallback { 3565 public NativePreImeInputStage(InputStage next, String traceCounter) { 3566 super(next, traceCounter); 3567 } 3568 3569 @Override 3570 protected int onProcess(QueuedInputEvent q) { 3571 if (mInputQueue != null && q.mEvent instanceof KeyEvent) { 3572 mInputQueue.sendInputEvent(q.mEvent, q, true, this); 3573 return DEFER; 3574 } 3575 return FORWARD; 3576 } 3577 3578 @Override 3579 public void onFinishedInputEvent(Object token, boolean handled) { 3580 QueuedInputEvent q = (QueuedInputEvent)token; 3581 if (handled) { 3582 finish(q, true); 3583 return; 3584 } 3585 forward(q); 3586 } 3587 } 3588 3589 /** 3590 * Delivers pre-ime input events to the view hierarchy. 3591 * Does not support pointer events. 3592 */ 3593 final class ViewPreImeInputStage extends InputStage { 3594 public ViewPreImeInputStage(InputStage next) { 3595 super(next); 3596 } 3597 3598 @Override 3599 protected int onProcess(QueuedInputEvent q) { 3600 if (q.mEvent instanceof KeyEvent) { 3601 return processKeyEvent(q); 3602 } 3603 return FORWARD; 3604 } 3605 3606 private int processKeyEvent(QueuedInputEvent q) { 3607 final KeyEvent event = (KeyEvent)q.mEvent; 3608 if (mView.dispatchKeyEventPreIme(event)) { 3609 return FINISH_HANDLED; 3610 } 3611 return FORWARD; 3612 } 3613 } 3614 3615 /** 3616 * Delivers input events to the ime. 3617 * Does not support pointer events. 3618 */ 3619 final class ImeInputStage extends AsyncInputStage 3620 implements InputMethodManager.FinishedInputEventCallback { 3621 public ImeInputStage(InputStage next, String traceCounter) { 3622 super(next, traceCounter); 3623 } 3624 3625 @Override 3626 protected int onProcess(QueuedInputEvent q) { 3627 if (mLastWasImTarget && !isInLocalFocusMode()) { 3628 InputMethodManager imm = InputMethodManager.peekInstance(); 3629 if (imm != null) { 3630 final InputEvent event = q.mEvent; 3631 if (DEBUG_IMF) Log.v(TAG, "Sending input event to IME: " + event); 3632 int result = imm.dispatchInputEvent(event, q, this, mHandler); 3633 if (result == InputMethodManager.DISPATCH_HANDLED) { 3634 return FINISH_HANDLED; 3635 } else if (result == InputMethodManager.DISPATCH_NOT_HANDLED) { 3636 return FINISH_NOT_HANDLED; 3637 } else { 3638 return DEFER; // callback will be invoked later 3639 } 3640 } 3641 } 3642 return FORWARD; 3643 } 3644 3645 @Override 3646 public void onFinishedInputEvent(Object token, boolean handled) { 3647 QueuedInputEvent q = (QueuedInputEvent)token; 3648 if (handled) { 3649 finish(q, true); 3650 return; 3651 } 3652 forward(q); 3653 } 3654 } 3655 3656 /** 3657 * Performs early processing of post-ime input events. 3658 */ 3659 final class EarlyPostImeInputStage extends InputStage { 3660 public EarlyPostImeInputStage(InputStage next) { 3661 super(next); 3662 } 3663 3664 @Override 3665 protected int onProcess(QueuedInputEvent q) { 3666 if (q.mEvent instanceof KeyEvent) { 3667 return processKeyEvent(q); 3668 } else { 3669 final int source = q.mEvent.getSource(); 3670 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 3671 return processPointerEvent(q); 3672 } 3673 } 3674 return FORWARD; 3675 } 3676 3677 private int processKeyEvent(QueuedInputEvent q) { 3678 final KeyEvent event = (KeyEvent)q.mEvent; 3679 3680 // If the key's purpose is to exit touch mode then we consume it 3681 // and consider it handled. 3682 if (checkForLeavingTouchModeAndConsume(event)) { 3683 return FINISH_HANDLED; 3684 } 3685 3686 // Make sure the fallback event policy sees all keys that will be 3687 // delivered to the view hierarchy. 3688 mFallbackEventHandler.preDispatchKeyEvent(event); 3689 return FORWARD; 3690 } 3691 3692 private int processPointerEvent(QueuedInputEvent q) { 3693 final MotionEvent event = (MotionEvent)q.mEvent; 3694 3695 // Translate the pointer event for compatibility, if needed. 3696 if (mTranslator != null) { 3697 mTranslator.translateEventInScreenToAppWindow(event); 3698 } 3699 3700 // Enter touch mode on down or scroll. 3701 final int action = event.getAction(); 3702 if (action == MotionEvent.ACTION_DOWN || action == MotionEvent.ACTION_SCROLL) { 3703 ensureTouchMode(true); 3704 } 3705 3706 // Offset the scroll position. 3707 if (mCurScrollY != 0) { 3708 event.offsetLocation(0, mCurScrollY); 3709 } 3710 3711 // Remember the touch position for possible drag-initiation. 3712 if (event.isTouchEvent()) { 3713 mLastTouchPoint.x = event.getRawX(); 3714 mLastTouchPoint.y = event.getRawY(); 3715 } 3716 return FORWARD; 3717 } 3718 } 3719 3720 /** 3721 * Delivers post-ime input events to a native activity. 3722 */ 3723 final class NativePostImeInputStage extends AsyncInputStage 3724 implements InputQueue.FinishedInputEventCallback { 3725 public NativePostImeInputStage(InputStage next, String traceCounter) { 3726 super(next, traceCounter); 3727 } 3728 3729 @Override 3730 protected int onProcess(QueuedInputEvent q) { 3731 if (mInputQueue != null) { 3732 mInputQueue.sendInputEvent(q.mEvent, q, false, this); 3733 return DEFER; 3734 } 3735 return FORWARD; 3736 } 3737 3738 @Override 3739 public void onFinishedInputEvent(Object token, boolean handled) { 3740 QueuedInputEvent q = (QueuedInputEvent)token; 3741 if (handled) { 3742 finish(q, true); 3743 return; 3744 } 3745 forward(q); 3746 } 3747 } 3748 3749 /** 3750 * Delivers post-ime input events to the view hierarchy. 3751 */ 3752 final class ViewPostImeInputStage extends InputStage { 3753 public ViewPostImeInputStage(InputStage next) { 3754 super(next); 3755 } 3756 3757 @Override 3758 protected int onProcess(QueuedInputEvent q) { 3759 if (q.mEvent instanceof KeyEvent) { 3760 return processKeyEvent(q); 3761 } else { 3762 final int source = q.mEvent.getSource(); 3763 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 3764 return processPointerEvent(q); 3765 } else if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 3766 return processTrackballEvent(q); 3767 } else { 3768 return processGenericMotionEvent(q); 3769 } 3770 } 3771 } 3772 3773 private int processKeyEvent(QueuedInputEvent q) { 3774 final KeyEvent event = (KeyEvent)q.mEvent; 3775 3776 // Deliver the key to the view hierarchy. 3777 if (mView.dispatchKeyEvent(event)) { 3778 return FINISH_HANDLED; 3779 } 3780 3781 // If the Control modifier is held, try to interpret the key as a shortcut. 3782 if (event.getAction() == KeyEvent.ACTION_DOWN 3783 && event.isCtrlPressed() 3784 && event.getRepeatCount() == 0 3785 && !KeyEvent.isModifierKey(event.getKeyCode())) { 3786 if (mView.dispatchKeyShortcutEvent(event)) { 3787 return FINISH_HANDLED; 3788 } 3789 } 3790 3791 // Apply the fallback event policy. 3792 if (mFallbackEventHandler.dispatchKeyEvent(event)) { 3793 return FINISH_HANDLED; 3794 } 3795 3796 // Handle automatic focus changes. 3797 if (event.getAction() == KeyEvent.ACTION_DOWN) { 3798 int direction = 0; 3799 switch (event.getKeyCode()) { 3800 case KeyEvent.KEYCODE_DPAD_LEFT: 3801 if (event.hasNoModifiers()) { 3802 direction = View.FOCUS_LEFT; 3803 } 3804 break; 3805 case KeyEvent.KEYCODE_DPAD_RIGHT: 3806 if (event.hasNoModifiers()) { 3807 direction = View.FOCUS_RIGHT; 3808 } 3809 break; 3810 case KeyEvent.KEYCODE_DPAD_UP: 3811 if (event.hasNoModifiers()) { 3812 direction = View.FOCUS_UP; 3813 } 3814 break; 3815 case KeyEvent.KEYCODE_DPAD_DOWN: 3816 if (event.hasNoModifiers()) { 3817 direction = View.FOCUS_DOWN; 3818 } 3819 break; 3820 case KeyEvent.KEYCODE_TAB: 3821 if (event.hasNoModifiers()) { 3822 direction = View.FOCUS_FORWARD; 3823 } else if (event.hasModifiers(KeyEvent.META_SHIFT_ON)) { 3824 direction = View.FOCUS_BACKWARD; 3825 } 3826 break; 3827 } 3828 if (direction != 0) { 3829 View focused = mView.findFocus(); 3830 if (focused != null) { 3831 View v = focused.focusSearch(direction); 3832 if (v != null && v != focused) { 3833 // do the math the get the interesting rect 3834 // of previous focused into the coord system of 3835 // newly focused view 3836 focused.getFocusedRect(mTempRect); 3837 if (mView instanceof ViewGroup) { 3838 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 3839 focused, mTempRect); 3840 ((ViewGroup) mView).offsetRectIntoDescendantCoords( 3841 v, mTempRect); 3842 } 3843 if (v.requestFocus(direction, mTempRect)) { 3844 playSoundEffect(SoundEffectConstants 3845 .getContantForFocusDirection(direction)); 3846 return FINISH_HANDLED; 3847 } 3848 } 3849 3850 // Give the focused view a last chance to handle the dpad key. 3851 if (mView.dispatchUnhandledMove(focused, direction)) { 3852 return FINISH_HANDLED; 3853 } 3854 } else { 3855 // find the best view to give focus to in this non-touch-mode with no-focus 3856 View v = focusSearch(null, direction); 3857 if (v != null && v.requestFocus(direction)) { 3858 return FINISH_HANDLED; 3859 } 3860 } 3861 } 3862 } 3863 return FORWARD; 3864 } 3865 3866 private int processPointerEvent(QueuedInputEvent q) { 3867 final MotionEvent event = (MotionEvent)q.mEvent; 3868 3869 if (mView.dispatchPointerEvent(event)) { 3870 return FINISH_HANDLED; 3871 } 3872 return FORWARD; 3873 } 3874 3875 private int processTrackballEvent(QueuedInputEvent q) { 3876 final MotionEvent event = (MotionEvent)q.mEvent; 3877 3878 if (mView.dispatchTrackballEvent(event)) { 3879 return FINISH_HANDLED; 3880 } 3881 return FORWARD; 3882 } 3883 3884 private int processGenericMotionEvent(QueuedInputEvent q) { 3885 final MotionEvent event = (MotionEvent)q.mEvent; 3886 3887 // Deliver the event to the view. 3888 if (mView.dispatchGenericMotionEvent(event)) { 3889 return FINISH_HANDLED; 3890 } 3891 return FORWARD; 3892 } 3893 } 3894 3895 /** 3896 * Performs synthesis of new input events from unhandled input events. 3897 */ 3898 final class SyntheticInputStage extends InputStage { 3899 private final SyntheticTrackballHandler mTrackball = new SyntheticTrackballHandler(); 3900 private final SyntheticJoystickHandler mJoystick = new SyntheticJoystickHandler(); 3901 private final SyntheticTouchNavigationHandler mTouchNavigation = 3902 new SyntheticTouchNavigationHandler(); 3903 3904 public SyntheticInputStage() { 3905 super(null); 3906 } 3907 3908 @Override 3909 protected int onProcess(QueuedInputEvent q) { 3910 q.mFlags |= QueuedInputEvent.FLAG_RESYNTHESIZED; 3911 if (q.mEvent instanceof MotionEvent) { 3912 final MotionEvent event = (MotionEvent)q.mEvent; 3913 final int source = event.getSource(); 3914 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 3915 mTrackball.process(event); 3916 return FINISH_HANDLED; 3917 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 3918 mJoystick.process(event); 3919 return FINISH_HANDLED; 3920 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 3921 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 3922 mTouchNavigation.process(event); 3923 return FINISH_HANDLED; 3924 } 3925 } 3926 return FORWARD; 3927 } 3928 3929 @Override 3930 protected void onDeliverToNext(QueuedInputEvent q) { 3931 if ((q.mFlags & QueuedInputEvent.FLAG_RESYNTHESIZED) == 0) { 3932 // Cancel related synthetic events if any prior stage has handled the event. 3933 if (q.mEvent instanceof MotionEvent) { 3934 final MotionEvent event = (MotionEvent)q.mEvent; 3935 final int source = event.getSource(); 3936 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 3937 mTrackball.cancel(event); 3938 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 3939 mJoystick.cancel(event); 3940 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 3941 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 3942 mTouchNavigation.cancel(event); 3943 } 3944 } 3945 } 3946 super.onDeliverToNext(q); 3947 } 3948 } 3949 3950 /** 3951 * Creates dpad events from unhandled trackball movements. 3952 */ 3953 final class SyntheticTrackballHandler { 3954 private final TrackballAxis mX = new TrackballAxis(); 3955 private final TrackballAxis mY = new TrackballAxis(); 3956 private long mLastTime; 3957 3958 public void process(MotionEvent event) { 3959 // Translate the trackball event into DPAD keys and try to deliver those. 3960 long curTime = SystemClock.uptimeMillis(); 3961 if ((mLastTime + MAX_TRACKBALL_DELAY) < curTime) { 3962 // It has been too long since the last movement, 3963 // so restart at the beginning. 3964 mX.reset(0); 3965 mY.reset(0); 3966 mLastTime = curTime; 3967 } 3968 3969 final int action = event.getAction(); 3970 final int metaState = event.getMetaState(); 3971 switch (action) { 3972 case MotionEvent.ACTION_DOWN: 3973 mX.reset(2); 3974 mY.reset(2); 3975 enqueueInputEvent(new KeyEvent(curTime, curTime, 3976 KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 3977 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 3978 InputDevice.SOURCE_KEYBOARD)); 3979 break; 3980 case MotionEvent.ACTION_UP: 3981 mX.reset(2); 3982 mY.reset(2); 3983 enqueueInputEvent(new KeyEvent(curTime, curTime, 3984 KeyEvent.ACTION_UP, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 3985 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 3986 InputDevice.SOURCE_KEYBOARD)); 3987 break; 3988 } 3989 3990 if (DEBUG_TRACKBALL) Log.v(TAG, "TB X=" + mX.position + " step=" 3991 + mX.step + " dir=" + mX.dir + " acc=" + mX.acceleration 3992 + " move=" + event.getX() 3993 + " / Y=" + mY.position + " step=" 3994 + mY.step + " dir=" + mY.dir + " acc=" + mY.acceleration 3995 + " move=" + event.getY()); 3996 final float xOff = mX.collect(event.getX(), event.getEventTime(), "X"); 3997 final float yOff = mY.collect(event.getY(), event.getEventTime(), "Y"); 3998 3999 // Generate DPAD events based on the trackball movement. 4000 // We pick the axis that has moved the most as the direction of 4001 // the DPAD. When we generate DPAD events for one axis, then the 4002 // other axis is reset -- we don't want to perform DPAD jumps due 4003 // to slight movements in the trackball when making major movements 4004 // along the other axis. 4005 int keycode = 0; 4006 int movement = 0; 4007 float accel = 1; 4008 if (xOff > yOff) { 4009 movement = mX.generate(); 4010 if (movement != 0) { 4011 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_RIGHT 4012 : KeyEvent.KEYCODE_DPAD_LEFT; 4013 accel = mX.acceleration; 4014 mY.reset(2); 4015 } 4016 } else if (yOff > 0) { 4017 movement = mY.generate(); 4018 if (movement != 0) { 4019 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_DOWN 4020 : KeyEvent.KEYCODE_DPAD_UP; 4021 accel = mY.acceleration; 4022 mX.reset(2); 4023 } 4024 } 4025 4026 if (keycode != 0) { 4027 if (movement < 0) movement = -movement; 4028 int accelMovement = (int)(movement * accel); 4029 if (DEBUG_TRACKBALL) Log.v(TAG, "Move: movement=" + movement 4030 + " accelMovement=" + accelMovement 4031 + " accel=" + accel); 4032 if (accelMovement > movement) { 4033 if (DEBUG_TRACKBALL) Log.v(TAG, "Delivering fake DPAD: " 4034 + keycode); 4035 movement--; 4036 int repeatCount = accelMovement - movement; 4037 enqueueInputEvent(new KeyEvent(curTime, curTime, 4038 KeyEvent.ACTION_MULTIPLE, keycode, repeatCount, metaState, 4039 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4040 InputDevice.SOURCE_KEYBOARD)); 4041 } 4042 while (movement > 0) { 4043 if (DEBUG_TRACKBALL) Log.v(TAG, "Delivering fake DPAD: " 4044 + keycode); 4045 movement--; 4046 curTime = SystemClock.uptimeMillis(); 4047 enqueueInputEvent(new KeyEvent(curTime, curTime, 4048 KeyEvent.ACTION_DOWN, keycode, 0, metaState, 4049 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4050 InputDevice.SOURCE_KEYBOARD)); 4051 enqueueInputEvent(new KeyEvent(curTime, curTime, 4052 KeyEvent.ACTION_UP, keycode, 0, metaState, 4053 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4054 InputDevice.SOURCE_KEYBOARD)); 4055 } 4056 mLastTime = curTime; 4057 } 4058 } 4059 4060 public void cancel(MotionEvent event) { 4061 mLastTime = Integer.MIN_VALUE; 4062 4063 // If we reach this, we consumed a trackball event. 4064 // Because we will not translate the trackball event into a key event, 4065 // touch mode will not exit, so we exit touch mode here. 4066 if (mView != null && mAdded) { 4067 ensureTouchMode(false); 4068 } 4069 } 4070 } 4071 4072 /** 4073 * Maintains state information for a single trackball axis, generating 4074 * discrete (DPAD) movements based on raw trackball motion. 4075 */ 4076 static final class TrackballAxis { 4077 /** 4078 * The maximum amount of acceleration we will apply. 4079 */ 4080 static final float MAX_ACCELERATION = 20; 4081 4082 /** 4083 * The maximum amount of time (in milliseconds) between events in order 4084 * for us to consider the user to be doing fast trackball movements, 4085 * and thus apply an acceleration. 4086 */ 4087 static final long FAST_MOVE_TIME = 150; 4088 4089 /** 4090 * Scaling factor to the time (in milliseconds) between events to how 4091 * much to multiple/divide the current acceleration. When movement 4092 * is < FAST_MOVE_TIME this multiplies the acceleration; when > 4093 * FAST_MOVE_TIME it divides it. 4094 */ 4095 static final float ACCEL_MOVE_SCALING_FACTOR = (1.0f/40); 4096 4097 static final float FIRST_MOVEMENT_THRESHOLD = 0.5f; 4098 static final float SECOND_CUMULATIVE_MOVEMENT_THRESHOLD = 2.0f; 4099 static final float SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD = 1.0f; 4100 4101 float position; 4102 float acceleration = 1; 4103 long lastMoveTime = 0; 4104 int step; 4105 int dir; 4106 int nonAccelMovement; 4107 4108 void reset(int _step) { 4109 position = 0; 4110 acceleration = 1; 4111 lastMoveTime = 0; 4112 step = _step; 4113 dir = 0; 4114 } 4115 4116 /** 4117 * Add trackball movement into the state. If the direction of movement 4118 * has been reversed, the state is reset before adding the 4119 * movement (so that you don't have to compensate for any previously 4120 * collected movement before see the result of the movement in the 4121 * new direction). 4122 * 4123 * @return Returns the absolute value of the amount of movement 4124 * collected so far. 4125 */ 4126 float collect(float off, long time, String axis) { 4127 long normTime; 4128 if (off > 0) { 4129 normTime = (long)(off * FAST_MOVE_TIME); 4130 if (dir < 0) { 4131 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to positive!"); 4132 position = 0; 4133 step = 0; 4134 acceleration = 1; 4135 lastMoveTime = 0; 4136 } 4137 dir = 1; 4138 } else if (off < 0) { 4139 normTime = (long)((-off) * FAST_MOVE_TIME); 4140 if (dir > 0) { 4141 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to negative!"); 4142 position = 0; 4143 step = 0; 4144 acceleration = 1; 4145 lastMoveTime = 0; 4146 } 4147 dir = -1; 4148 } else { 4149 normTime = 0; 4150 } 4151 4152 // The number of milliseconds between each movement that is 4153 // considered "normal" and will not result in any acceleration 4154 // or deceleration, scaled by the offset we have here. 4155 if (normTime > 0) { 4156 long delta = time - lastMoveTime; 4157 lastMoveTime = time; 4158 float acc = acceleration; 4159 if (delta < normTime) { 4160 // The user is scrolling rapidly, so increase acceleration. 4161 float scale = (normTime-delta) * ACCEL_MOVE_SCALING_FACTOR; 4162 if (scale > 1) acc *= scale; 4163 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " accelerate: off=" 4164 + off + " normTime=" + normTime + " delta=" + delta 4165 + " scale=" + scale + " acc=" + acc); 4166 acceleration = acc < MAX_ACCELERATION ? acc : MAX_ACCELERATION; 4167 } else { 4168 // The user is scrolling slowly, so decrease acceleration. 4169 float scale = (delta-normTime) * ACCEL_MOVE_SCALING_FACTOR; 4170 if (scale > 1) acc /= scale; 4171 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " deccelerate: off=" 4172 + off + " normTime=" + normTime + " delta=" + delta 4173 + " scale=" + scale + " acc=" + acc); 4174 acceleration = acc > 1 ? acc : 1; 4175 } 4176 } 4177 position += off; 4178 return Math.abs(position); 4179 } 4180 4181 /** 4182 * Generate the number of discrete movement events appropriate for 4183 * the currently collected trackball movement. 4184 * 4185 * @return Returns the number of discrete movements, either positive 4186 * or negative, or 0 if there is not enough trackball movement yet 4187 * for a discrete movement. 4188 */ 4189 int generate() { 4190 int movement = 0; 4191 nonAccelMovement = 0; 4192 do { 4193 final int dir = position >= 0 ? 1 : -1; 4194 switch (step) { 4195 // If we are going to execute the first step, then we want 4196 // to do this as soon as possible instead of waiting for 4197 // a full movement, in order to make things look responsive. 4198 case 0: 4199 if (Math.abs(position) < FIRST_MOVEMENT_THRESHOLD) { 4200 return movement; 4201 } 4202 movement += dir; 4203 nonAccelMovement += dir; 4204 step = 1; 4205 break; 4206 // If we have generated the first movement, then we need 4207 // to wait for the second complete trackball motion before 4208 // generating the second discrete movement. 4209 case 1: 4210 if (Math.abs(position) < SECOND_CUMULATIVE_MOVEMENT_THRESHOLD) { 4211 return movement; 4212 } 4213 movement += dir; 4214 nonAccelMovement += dir; 4215 position -= SECOND_CUMULATIVE_MOVEMENT_THRESHOLD * dir; 4216 step = 2; 4217 break; 4218 // After the first two, we generate discrete movements 4219 // consistently with the trackball, applying an acceleration 4220 // if the trackball is moving quickly. This is a simple 4221 // acceleration on top of what we already compute based 4222 // on how quickly the wheel is being turned, to apply 4223 // a longer increasing acceleration to continuous movement 4224 // in one direction. 4225 default: 4226 if (Math.abs(position) < SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD) { 4227 return movement; 4228 } 4229 movement += dir; 4230 position -= dir * SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD; 4231 float acc = acceleration; 4232 acc *= 1.1f; 4233 acceleration = acc < MAX_ACCELERATION ? acc : acceleration; 4234 break; 4235 } 4236 } while (true); 4237 } 4238 } 4239 4240 /** 4241 * Creates dpad events from unhandled joystick movements. 4242 */ 4243 final class SyntheticJoystickHandler extends Handler { 4244 private final static int MSG_ENQUEUE_X_AXIS_KEY_REPEAT = 1; 4245 private final static int MSG_ENQUEUE_Y_AXIS_KEY_REPEAT = 2; 4246 4247 private int mLastXDirection; 4248 private int mLastYDirection; 4249 private int mLastXKeyCode; 4250 private int mLastYKeyCode; 4251 4252 public SyntheticJoystickHandler() { 4253 super(true); 4254 } 4255 4256 @Override 4257 public void handleMessage(Message msg) { 4258 switch (msg.what) { 4259 case MSG_ENQUEUE_X_AXIS_KEY_REPEAT: 4260 case MSG_ENQUEUE_Y_AXIS_KEY_REPEAT: { 4261 KeyEvent oldEvent = (KeyEvent)msg.obj; 4262 KeyEvent e = KeyEvent.changeTimeRepeat(oldEvent, 4263 SystemClock.uptimeMillis(), 4264 oldEvent.getRepeatCount() + 1); 4265 if (mAttachInfo.mHasWindowFocus) { 4266 enqueueInputEvent(e); 4267 Message m = obtainMessage(msg.what, e); 4268 m.setAsynchronous(true); 4269 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatDelay()); 4270 } 4271 } break; 4272 } 4273 } 4274 4275 public void process(MotionEvent event) { 4276 update(event, true); 4277 } 4278 4279 public void cancel(MotionEvent event) { 4280 update(event, false); 4281 } 4282 4283 private void update(MotionEvent event, boolean synthesizeNewKeys) { 4284 final long time = event.getEventTime(); 4285 final int metaState = event.getMetaState(); 4286 final int deviceId = event.getDeviceId(); 4287 final int source = event.getSource(); 4288 4289 int xDirection = joystickAxisValueToDirection( 4290 event.getAxisValue(MotionEvent.AXIS_HAT_X)); 4291 if (xDirection == 0) { 4292 xDirection = joystickAxisValueToDirection(event.getX()); 4293 } 4294 4295 int yDirection = joystickAxisValueToDirection( 4296 event.getAxisValue(MotionEvent.AXIS_HAT_Y)); 4297 if (yDirection == 0) { 4298 yDirection = joystickAxisValueToDirection(event.getY()); 4299 } 4300 4301 if (xDirection != mLastXDirection) { 4302 if (mLastXKeyCode != 0) { 4303 removeMessages(MSG_ENQUEUE_X_AXIS_KEY_REPEAT); 4304 enqueueInputEvent(new KeyEvent(time, time, 4305 KeyEvent.ACTION_UP, mLastXKeyCode, 0, metaState, 4306 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4307 mLastXKeyCode = 0; 4308 } 4309 4310 mLastXDirection = xDirection; 4311 4312 if (xDirection != 0 && synthesizeNewKeys) { 4313 mLastXKeyCode = xDirection > 0 4314 ? KeyEvent.KEYCODE_DPAD_RIGHT : KeyEvent.KEYCODE_DPAD_LEFT; 4315 final KeyEvent e = new KeyEvent(time, time, 4316 KeyEvent.ACTION_DOWN, mLastXKeyCode, 0, metaState, 4317 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4318 enqueueInputEvent(e); 4319 Message m = obtainMessage(MSG_ENQUEUE_X_AXIS_KEY_REPEAT, e); 4320 m.setAsynchronous(true); 4321 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4322 } 4323 } 4324 4325 if (yDirection != mLastYDirection) { 4326 if (mLastYKeyCode != 0) { 4327 removeMessages(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT); 4328 enqueueInputEvent(new KeyEvent(time, time, 4329 KeyEvent.ACTION_UP, mLastYKeyCode, 0, metaState, 4330 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4331 mLastYKeyCode = 0; 4332 } 4333 4334 mLastYDirection = yDirection; 4335 4336 if (yDirection != 0 && synthesizeNewKeys) { 4337 mLastYKeyCode = yDirection > 0 4338 ? KeyEvent.KEYCODE_DPAD_DOWN : KeyEvent.KEYCODE_DPAD_UP; 4339 final KeyEvent e = new KeyEvent(time, time, 4340 KeyEvent.ACTION_DOWN, mLastYKeyCode, 0, metaState, 4341 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4342 enqueueInputEvent(e); 4343 Message m = obtainMessage(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT, e); 4344 m.setAsynchronous(true); 4345 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4346 } 4347 } 4348 } 4349 4350 private int joystickAxisValueToDirection(float value) { 4351 if (value >= 0.5f) { 4352 return 1; 4353 } else if (value <= -0.5f) { 4354 return -1; 4355 } else { 4356 return 0; 4357 } 4358 } 4359 } 4360 4361 /** 4362 * Creates dpad events from unhandled touch navigation movements. 4363 */ 4364 final class SyntheticTouchNavigationHandler extends Handler { 4365 private static final String LOCAL_TAG = "SyntheticTouchNavigationHandler"; 4366 private static final boolean LOCAL_DEBUG = false; 4367 4368 // Assumed nominal width and height in millimeters of a touch navigation pad, 4369 // if no resolution information is available from the input system. 4370 private static final float DEFAULT_WIDTH_MILLIMETERS = 48; 4371 private static final float DEFAULT_HEIGHT_MILLIMETERS = 48; 4372 4373 /* TODO: These constants should eventually be moved to ViewConfiguration. */ 4374 4375 // The nominal distance traveled to move by one unit. 4376 private static final int TICK_DISTANCE_MILLIMETERS = 12; 4377 4378 // Minimum and maximum fling velocity in ticks per second. 4379 // The minimum velocity should be set such that we perform enough ticks per 4380 // second that the fling appears to be fluid. For example, if we set the minimum 4381 // to 2 ticks per second, then there may be up to half a second delay between the next 4382 // to last and last ticks which is noticeably discrete and jerky. This value should 4383 // probably not be set to anything less than about 4. 4384 // If fling accuracy is a problem then consider tuning the tick distance instead. 4385 private static final float MIN_FLING_VELOCITY_TICKS_PER_SECOND = 6f; 4386 private static final float MAX_FLING_VELOCITY_TICKS_PER_SECOND = 20f; 4387 4388 // Fling velocity decay factor applied after each new key is emitted. 4389 // This parameter controls the deceleration and overall duration of the fling. 4390 // The fling stops automatically when its velocity drops below the minimum 4391 // fling velocity defined above. 4392 private static final float FLING_TICK_DECAY = 0.8f; 4393 4394 /* The input device that we are tracking. */ 4395 4396 private int mCurrentDeviceId = -1; 4397 private int mCurrentSource; 4398 private boolean mCurrentDeviceSupported; 4399 4400 /* Configuration for the current input device. */ 4401 4402 // The scaled tick distance. A movement of this amount should generally translate 4403 // into a single dpad event in a given direction. 4404 private float mConfigTickDistance; 4405 4406 // The minimum and maximum scaled fling velocity. 4407 private float mConfigMinFlingVelocity; 4408 private float mConfigMaxFlingVelocity; 4409 4410 /* Tracking state. */ 4411 4412 // The velocity tracker for detecting flings. 4413 private VelocityTracker mVelocityTracker; 4414 4415 // The active pointer id, or -1 if none. 4416 private int mActivePointerId = -1; 4417 4418 // Time and location where tracking started. 4419 private long mStartTime; 4420 private float mStartX; 4421 private float mStartY; 4422 4423 // Most recently observed position. 4424 private float mLastX; 4425 private float mLastY; 4426 4427 // Accumulated movement delta since the last direction key was sent. 4428 private float mAccumulatedX; 4429 private float mAccumulatedY; 4430 4431 // Set to true if any movement was delivered to the app. 4432 // Implies that tap slop was exceeded. 4433 private boolean mConsumedMovement; 4434 4435 // The most recently sent key down event. 4436 // The keycode remains set until the direction changes or a fling ends 4437 // so that repeated key events may be generated as required. 4438 private long mPendingKeyDownTime; 4439 private int mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 4440 private int mPendingKeyRepeatCount; 4441 private int mPendingKeyMetaState; 4442 4443 // The current fling velocity while a fling is in progress. 4444 private boolean mFlinging; 4445 private float mFlingVelocity; 4446 4447 // The last time a confirm key was pressed on the touch nav device 4448 private long mLastConfirmKeyTime = Long.MAX_VALUE; 4449 4450 public SyntheticTouchNavigationHandler() { 4451 super(true); 4452 } 4453 4454 public void process(MotionEvent event) { 4455 // Update the current device information. 4456 final long time = event.getEventTime(); 4457 final int deviceId = event.getDeviceId(); 4458 final int source = event.getSource(); 4459 if (mCurrentDeviceId != deviceId || mCurrentSource != source) { 4460 finishKeys(time); 4461 finishTracking(time); 4462 mCurrentDeviceId = deviceId; 4463 mCurrentSource = source; 4464 mCurrentDeviceSupported = false; 4465 InputDevice device = event.getDevice(); 4466 if (device != null) { 4467 // In order to support an input device, we must know certain 4468 // characteristics about it, such as its size and resolution. 4469 InputDevice.MotionRange xRange = device.getMotionRange(MotionEvent.AXIS_X); 4470 InputDevice.MotionRange yRange = device.getMotionRange(MotionEvent.AXIS_Y); 4471 if (xRange != null && yRange != null) { 4472 mCurrentDeviceSupported = true; 4473 4474 // Infer the resolution if it not actually known. 4475 float xRes = xRange.getResolution(); 4476 if (xRes <= 0) { 4477 xRes = xRange.getRange() / DEFAULT_WIDTH_MILLIMETERS; 4478 } 4479 float yRes = yRange.getResolution(); 4480 if (yRes <= 0) { 4481 yRes = yRange.getRange() / DEFAULT_HEIGHT_MILLIMETERS; 4482 } 4483 float nominalRes = (xRes + yRes) * 0.5f; 4484 4485 // Precompute all of the configuration thresholds we will need. 4486 mConfigTickDistance = TICK_DISTANCE_MILLIMETERS * nominalRes; 4487 mConfigMinFlingVelocity = 4488 MIN_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 4489 mConfigMaxFlingVelocity = 4490 MAX_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 4491 4492 if (LOCAL_DEBUG) { 4493 Log.d(LOCAL_TAG, "Configured device " + mCurrentDeviceId 4494 + " (" + Integer.toHexString(mCurrentSource) + "): " 4495 + ", mConfigTickDistance=" + mConfigTickDistance 4496 + ", mConfigMinFlingVelocity=" + mConfigMinFlingVelocity 4497 + ", mConfigMaxFlingVelocity=" + mConfigMaxFlingVelocity); 4498 } 4499 } 4500 } 4501 } 4502 if (!mCurrentDeviceSupported) { 4503 return; 4504 } 4505 4506 // Handle the event. 4507 final int action = event.getActionMasked(); 4508 switch (action) { 4509 case MotionEvent.ACTION_DOWN: { 4510 boolean caughtFling = mFlinging; 4511 finishKeys(time); 4512 finishTracking(time); 4513 mActivePointerId = event.getPointerId(0); 4514 mVelocityTracker = VelocityTracker.obtain(); 4515 mVelocityTracker.addMovement(event); 4516 mStartTime = time; 4517 mStartX = event.getX(); 4518 mStartY = event.getY(); 4519 mLastX = mStartX; 4520 mLastY = mStartY; 4521 mAccumulatedX = 0; 4522 mAccumulatedY = 0; 4523 4524 // If we caught a fling, then pretend that the tap slop has already 4525 // been exceeded to suppress taps whose only purpose is to stop the fling. 4526 mConsumedMovement = caughtFling; 4527 break; 4528 } 4529 4530 case MotionEvent.ACTION_MOVE: 4531 case MotionEvent.ACTION_UP: { 4532 if (mActivePointerId < 0) { 4533 break; 4534 } 4535 final int index = event.findPointerIndex(mActivePointerId); 4536 if (index < 0) { 4537 finishKeys(time); 4538 finishTracking(time); 4539 break; 4540 } 4541 4542 mVelocityTracker.addMovement(event); 4543 final float x = event.getX(index); 4544 final float y = event.getY(index); 4545 mAccumulatedX += x - mLastX; 4546 mAccumulatedY += y - mLastY; 4547 mLastX = x; 4548 mLastY = y; 4549 4550 // Consume any accumulated movement so far. 4551 final int metaState = event.getMetaState(); 4552 consumeAccumulatedMovement(time, metaState); 4553 4554 // Detect taps and flings. 4555 if (action == MotionEvent.ACTION_UP) { 4556 if (mConsumedMovement && mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 4557 // It might be a fling. 4558 mVelocityTracker.computeCurrentVelocity(1000, mConfigMaxFlingVelocity); 4559 final float vx = mVelocityTracker.getXVelocity(mActivePointerId); 4560 final float vy = mVelocityTracker.getYVelocity(mActivePointerId); 4561 if (!startFling(time, vx, vy)) { 4562 finishKeys(time); 4563 } 4564 } 4565 finishTracking(time); 4566 } 4567 break; 4568 } 4569 4570 case MotionEvent.ACTION_CANCEL: { 4571 finishKeys(time); 4572 finishTracking(time); 4573 break; 4574 } 4575 } 4576 } 4577 4578 public void cancel(MotionEvent event) { 4579 if (mCurrentDeviceId == event.getDeviceId() 4580 && mCurrentSource == event.getSource()) { 4581 final long time = event.getEventTime(); 4582 finishKeys(time); 4583 finishTracking(time); 4584 } 4585 } 4586 4587 private void finishKeys(long time) { 4588 cancelFling(); 4589 sendKeyUp(time); 4590 } 4591 4592 private void finishTracking(long time) { 4593 if (mActivePointerId >= 0) { 4594 mActivePointerId = -1; 4595 mVelocityTracker.recycle(); 4596 mVelocityTracker = null; 4597 } 4598 } 4599 4600 private void consumeAccumulatedMovement(long time, int metaState) { 4601 final float absX = Math.abs(mAccumulatedX); 4602 final float absY = Math.abs(mAccumulatedY); 4603 if (absX >= absY) { 4604 if (absX >= mConfigTickDistance) { 4605 mAccumulatedX = consumeAccumulatedMovement(time, metaState, mAccumulatedX, 4606 KeyEvent.KEYCODE_DPAD_LEFT, KeyEvent.KEYCODE_DPAD_RIGHT); 4607 mAccumulatedY = 0; 4608 mConsumedMovement = true; 4609 } 4610 } else { 4611 if (absY >= mConfigTickDistance) { 4612 mAccumulatedY = consumeAccumulatedMovement(time, metaState, mAccumulatedY, 4613 KeyEvent.KEYCODE_DPAD_UP, KeyEvent.KEYCODE_DPAD_DOWN); 4614 mAccumulatedX = 0; 4615 mConsumedMovement = true; 4616 } 4617 } 4618 } 4619 4620 private float consumeAccumulatedMovement(long time, int metaState, 4621 float accumulator, int negativeKeyCode, int positiveKeyCode) { 4622 while (accumulator <= -mConfigTickDistance) { 4623 sendKeyDownOrRepeat(time, negativeKeyCode, metaState); 4624 accumulator += mConfigTickDistance; 4625 } 4626 while (accumulator >= mConfigTickDistance) { 4627 sendKeyDownOrRepeat(time, positiveKeyCode, metaState); 4628 accumulator -= mConfigTickDistance; 4629 } 4630 return accumulator; 4631 } 4632 4633 private void sendKeyDownOrRepeat(long time, int keyCode, int metaState) { 4634 if (mPendingKeyCode != keyCode) { 4635 sendKeyUp(time); 4636 mPendingKeyDownTime = time; 4637 mPendingKeyCode = keyCode; 4638 mPendingKeyRepeatCount = 0; 4639 } else { 4640 mPendingKeyRepeatCount += 1; 4641 } 4642 mPendingKeyMetaState = metaState; 4643 4644 // Note: Normally we would pass FLAG_LONG_PRESS when the repeat count is 1 4645 // but it doesn't quite make sense when simulating the events in this way. 4646 if (LOCAL_DEBUG) { 4647 Log.d(LOCAL_TAG, "Sending key down: keyCode=" + mPendingKeyCode 4648 + ", repeatCount=" + mPendingKeyRepeatCount 4649 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 4650 } 4651 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 4652 KeyEvent.ACTION_DOWN, mPendingKeyCode, mPendingKeyRepeatCount, 4653 mPendingKeyMetaState, mCurrentDeviceId, 4654 KeyEvent.FLAG_FALLBACK, mCurrentSource)); 4655 } 4656 4657 private void sendKeyUp(long time) { 4658 if (mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 4659 if (LOCAL_DEBUG) { 4660 Log.d(LOCAL_TAG, "Sending key up: keyCode=" + mPendingKeyCode 4661 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 4662 } 4663 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 4664 KeyEvent.ACTION_UP, mPendingKeyCode, 0, mPendingKeyMetaState, 4665 mCurrentDeviceId, 0, KeyEvent.FLAG_FALLBACK, 4666 mCurrentSource)); 4667 mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 4668 } 4669 } 4670 4671 private boolean startFling(long time, float vx, float vy) { 4672 if (LOCAL_DEBUG) { 4673 Log.d(LOCAL_TAG, "Considering fling: vx=" + vx + ", vy=" + vy 4674 + ", min=" + mConfigMinFlingVelocity); 4675 } 4676 4677 // Flings must be oriented in the same direction as the preceding movements. 4678 switch (mPendingKeyCode) { 4679 case KeyEvent.KEYCODE_DPAD_LEFT: 4680 if (-vx >= mConfigMinFlingVelocity 4681 && Math.abs(vy) < mConfigMinFlingVelocity) { 4682 mFlingVelocity = -vx; 4683 break; 4684 } 4685 return false; 4686 4687 case KeyEvent.KEYCODE_DPAD_RIGHT: 4688 if (vx >= mConfigMinFlingVelocity 4689 && Math.abs(vy) < mConfigMinFlingVelocity) { 4690 mFlingVelocity = vx; 4691 break; 4692 } 4693 return false; 4694 4695 case KeyEvent.KEYCODE_DPAD_UP: 4696 if (-vy >= mConfigMinFlingVelocity 4697 && Math.abs(vx) < mConfigMinFlingVelocity) { 4698 mFlingVelocity = -vy; 4699 break; 4700 } 4701 return false; 4702 4703 case KeyEvent.KEYCODE_DPAD_DOWN: 4704 if (vy >= mConfigMinFlingVelocity 4705 && Math.abs(vx) < mConfigMinFlingVelocity) { 4706 mFlingVelocity = vy; 4707 break; 4708 } 4709 return false; 4710 } 4711 4712 // Post the first fling event. 4713 mFlinging = postFling(time); 4714 return mFlinging; 4715 } 4716 4717 private boolean postFling(long time) { 4718 // The idea here is to estimate the time when the pointer would have 4719 // traveled one tick distance unit given the current fling velocity. 4720 // This effect creates continuity of motion. 4721 if (mFlingVelocity >= mConfigMinFlingVelocity) { 4722 long delay = (long)(mConfigTickDistance / mFlingVelocity * 1000); 4723 postAtTime(mFlingRunnable, time + delay); 4724 if (LOCAL_DEBUG) { 4725 Log.d(LOCAL_TAG, "Posted fling: velocity=" 4726 + mFlingVelocity + ", delay=" + delay 4727 + ", keyCode=" + mPendingKeyCode); 4728 } 4729 return true; 4730 } 4731 return false; 4732 } 4733 4734 private void cancelFling() { 4735 if (mFlinging) { 4736 removeCallbacks(mFlingRunnable); 4737 mFlinging = false; 4738 } 4739 } 4740 4741 private final Runnable mFlingRunnable = new Runnable() { 4742 @Override 4743 public void run() { 4744 final long time = SystemClock.uptimeMillis(); 4745 sendKeyDownOrRepeat(time, mPendingKeyCode, mPendingKeyMetaState); 4746 mFlingVelocity *= FLING_TICK_DECAY; 4747 if (!postFling(time)) { 4748 mFlinging = false; 4749 finishKeys(time); 4750 } 4751 } 4752 }; 4753 } 4754 4755 /** 4756 * Returns true if the key is used for keyboard navigation. 4757 * @param keyEvent The key event. 4758 * @return True if the key is used for keyboard navigation. 4759 */ 4760 private static boolean isNavigationKey(KeyEvent keyEvent) { 4761 switch (keyEvent.getKeyCode()) { 4762 case KeyEvent.KEYCODE_DPAD_LEFT: 4763 case KeyEvent.KEYCODE_DPAD_RIGHT: 4764 case KeyEvent.KEYCODE_DPAD_UP: 4765 case KeyEvent.KEYCODE_DPAD_DOWN: 4766 case KeyEvent.KEYCODE_DPAD_CENTER: 4767 case KeyEvent.KEYCODE_PAGE_UP: 4768 case KeyEvent.KEYCODE_PAGE_DOWN: 4769 case KeyEvent.KEYCODE_MOVE_HOME: 4770 case KeyEvent.KEYCODE_MOVE_END: 4771 case KeyEvent.KEYCODE_TAB: 4772 case KeyEvent.KEYCODE_SPACE: 4773 case KeyEvent.KEYCODE_ENTER: 4774 return true; 4775 } 4776 return false; 4777 } 4778 4779 /** 4780 * Returns true if the key is used for typing. 4781 * @param keyEvent The key event. 4782 * @return True if the key is used for typing. 4783 */ 4784 private static boolean isTypingKey(KeyEvent keyEvent) { 4785 return keyEvent.getUnicodeChar() > 0; 4786 } 4787 4788 /** 4789 * See if the key event means we should leave touch mode (and leave touch mode if so). 4790 * @param event The key event. 4791 * @return Whether this key event should be consumed (meaning the act of 4792 * leaving touch mode alone is considered the event). 4793 */ 4794 private boolean checkForLeavingTouchModeAndConsume(KeyEvent event) { 4795 // Only relevant in touch mode. 4796 if (!mAttachInfo.mInTouchMode) { 4797 return false; 4798 } 4799 4800 // Only consider leaving touch mode on DOWN or MULTIPLE actions, never on UP. 4801 final int action = event.getAction(); 4802 if (action != KeyEvent.ACTION_DOWN && action != KeyEvent.ACTION_MULTIPLE) { 4803 return false; 4804 } 4805 4806 // Don't leave touch mode if the IME told us not to. 4807 if ((event.getFlags() & KeyEvent.FLAG_KEEP_TOUCH_MODE) != 0) { 4808 return false; 4809 } 4810 4811 // If the key can be used for keyboard navigation then leave touch mode 4812 // and select a focused view if needed (in ensureTouchMode). 4813 // When a new focused view is selected, we consume the navigation key because 4814 // navigation doesn't make much sense unless a view already has focus so 4815 // the key's purpose is to set focus. 4816 if (isNavigationKey(event)) { 4817 return ensureTouchMode(false); 4818 } 4819 4820 // If the key can be used for typing then leave touch mode 4821 // and select a focused view if needed (in ensureTouchMode). 4822 // Always allow the view to process the typing key. 4823 if (isTypingKey(event)) { 4824 ensureTouchMode(false); 4825 return false; 4826 } 4827 4828 return false; 4829 } 4830 4831 /* drag/drop */ 4832 void setLocalDragState(Object obj) { 4833 mLocalDragState = obj; 4834 } 4835 4836 private void handleDragEvent(DragEvent event) { 4837 // From the root, only drag start/end/location are dispatched. entered/exited 4838 // are determined and dispatched by the viewgroup hierarchy, who then report 4839 // that back here for ultimate reporting back to the framework. 4840 if (mView != null && mAdded) { 4841 final int what = event.mAction; 4842 4843 if (what == DragEvent.ACTION_DRAG_EXITED) { 4844 // A direct EXITED event means that the window manager knows we've just crossed 4845 // a window boundary, so the current drag target within this one must have 4846 // just been exited. Send it the usual notifications and then we're done 4847 // for now. 4848 mView.dispatchDragEvent(event); 4849 } else { 4850 // Cache the drag description when the operation starts, then fill it in 4851 // on subsequent calls as a convenience 4852 if (what == DragEvent.ACTION_DRAG_STARTED) { 4853 mCurrentDragView = null; // Start the current-recipient tracking 4854 mDragDescription = event.mClipDescription; 4855 } else { 4856 event.mClipDescription = mDragDescription; 4857 } 4858 4859 // For events with a [screen] location, translate into window coordinates 4860 if ((what == DragEvent.ACTION_DRAG_LOCATION) || (what == DragEvent.ACTION_DROP)) { 4861 mDragPoint.set(event.mX, event.mY); 4862 if (mTranslator != null) { 4863 mTranslator.translatePointInScreenToAppWindow(mDragPoint); 4864 } 4865 4866 if (mCurScrollY != 0) { 4867 mDragPoint.offset(0, mCurScrollY); 4868 } 4869 4870 event.mX = mDragPoint.x; 4871 event.mY = mDragPoint.y; 4872 } 4873 4874 // Remember who the current drag target is pre-dispatch 4875 final View prevDragView = mCurrentDragView; 4876 4877 // Now dispatch the drag/drop event 4878 boolean result = mView.dispatchDragEvent(event); 4879 4880 // If we changed apparent drag target, tell the OS about it 4881 if (prevDragView != mCurrentDragView) { 4882 try { 4883 if (prevDragView != null) { 4884 mWindowSession.dragRecipientExited(mWindow); 4885 } 4886 if (mCurrentDragView != null) { 4887 mWindowSession.dragRecipientEntered(mWindow); 4888 } 4889 } catch (RemoteException e) { 4890 Slog.e(TAG, "Unable to note drag target change"); 4891 } 4892 } 4893 4894 // Report the drop result when we're done 4895 if (what == DragEvent.ACTION_DROP) { 4896 mDragDescription = null; 4897 try { 4898 Log.i(TAG, "Reporting drop result: " + result); 4899 mWindowSession.reportDropResult(mWindow, result); 4900 } catch (RemoteException e) { 4901 Log.e(TAG, "Unable to report drop result"); 4902 } 4903 } 4904 4905 // When the drag operation ends, release any local state object 4906 // that may have been in use 4907 if (what == DragEvent.ACTION_DRAG_ENDED) { 4908 setLocalDragState(null); 4909 } 4910 } 4911 } 4912 event.recycle(); 4913 } 4914 4915 public void handleDispatchSystemUiVisibilityChanged(SystemUiVisibilityInfo args) { 4916 if (mSeq != args.seq) { 4917 // The sequence has changed, so we need to update our value and make 4918 // sure to do a traversal afterward so the window manager is given our 4919 // most recent data. 4920 mSeq = args.seq; 4921 mAttachInfo.mForceReportNewAttributes = true; 4922 scheduleTraversals(); 4923 } 4924 if (mView == null) return; 4925 if (args.localChanges != 0) { 4926 mView.updateLocalSystemUiVisibility(args.localValue, args.localChanges); 4927 } 4928 if (mAttachInfo != null) { 4929 int visibility = args.globalVisibility&View.SYSTEM_UI_CLEARABLE_FLAGS; 4930 if (visibility != mAttachInfo.mGlobalSystemUiVisibility) { 4931 mAttachInfo.mGlobalSystemUiVisibility = visibility; 4932 mView.dispatchSystemUiVisibilityChanged(visibility); 4933 } 4934 } 4935 } 4936 4937 public void handleDispatchDoneAnimating() { 4938 if (mWindowsAnimating) { 4939 mWindowsAnimating = false; 4940 if (!mDirty.isEmpty() || mIsAnimating || mFullRedrawNeeded) { 4941 scheduleTraversals(); 4942 } 4943 } 4944 } 4945 4946 public void getLastTouchPoint(Point outLocation) { 4947 outLocation.x = (int) mLastTouchPoint.x; 4948 outLocation.y = (int) mLastTouchPoint.y; 4949 } 4950 4951 public void setDragFocus(View newDragTarget) { 4952 if (mCurrentDragView != newDragTarget) { 4953 mCurrentDragView = newDragTarget; 4954 } 4955 } 4956 4957 private AudioManager getAudioManager() { 4958 if (mView == null) { 4959 throw new IllegalStateException("getAudioManager called when there is no mView"); 4960 } 4961 if (mAudioManager == null) { 4962 mAudioManager = (AudioManager) mView.getContext().getSystemService(Context.AUDIO_SERVICE); 4963 } 4964 return mAudioManager; 4965 } 4966 4967 public AccessibilityInteractionController getAccessibilityInteractionController() { 4968 if (mView == null) { 4969 throw new IllegalStateException("getAccessibilityInteractionController" 4970 + " called when there is no mView"); 4971 } 4972 if (mAccessibilityInteractionController == null) { 4973 mAccessibilityInteractionController = new AccessibilityInteractionController(this); 4974 } 4975 return mAccessibilityInteractionController; 4976 } 4977 4978 private int relayoutWindow(WindowManager.LayoutParams params, int viewVisibility, 4979 boolean insetsPending) throws RemoteException { 4980 4981 float appScale = mAttachInfo.mApplicationScale; 4982 boolean restore = false; 4983 if (params != null && mTranslator != null) { 4984 restore = true; 4985 params.backup(); 4986 mTranslator.translateWindowLayout(params); 4987 } 4988 if (params != null) { 4989 if (DBG) Log.d(TAG, "WindowLayout in layoutWindow:" + params); 4990 } 4991 mPendingConfiguration.seq = 0; 4992 //Log.d(TAG, ">>>>>> CALLING relayout"); 4993 if (params != null && mOrigWindowType != params.type) { 4994 // For compatibility with old apps, don't crash here. 4995 if (mTargetSdkVersion < android.os.Build.VERSION_CODES.ICE_CREAM_SANDWICH) { 4996 Slog.w(TAG, "Window type can not be changed after " 4997 + "the window is added; ignoring change of " + mView); 4998 params.type = mOrigWindowType; 4999 } 5000 } 5001 int relayoutResult = mWindowSession.relayout( 5002 mWindow, mSeq, params, 5003 (int) (mView.getMeasuredWidth() * appScale + 0.5f), 5004 (int) (mView.getMeasuredHeight() * appScale + 0.5f), 5005 viewVisibility, insetsPending ? WindowManagerGlobal.RELAYOUT_INSETS_PENDING : 0, 5006 mWinFrame, mPendingOverscanInsets, mPendingContentInsets, mPendingVisibleInsets, 5007 mPendingConfiguration, mSurface); 5008 //Log.d(TAG, "<<<<<< BACK FROM relayout"); 5009 if (restore) { 5010 params.restore(); 5011 } 5012 5013 if (mTranslator != null) { 5014 mTranslator.translateRectInScreenToAppWinFrame(mWinFrame); 5015 mTranslator.translateRectInScreenToAppWindow(mPendingOverscanInsets); 5016 mTranslator.translateRectInScreenToAppWindow(mPendingContentInsets); 5017 mTranslator.translateRectInScreenToAppWindow(mPendingVisibleInsets); 5018 } 5019 return relayoutResult; 5020 } 5021 5022 /** 5023 * {@inheritDoc} 5024 */ 5025 public void playSoundEffect(int effectId) { 5026 checkThread(); 5027 5028 if (mMediaDisabled) { 5029 return; 5030 } 5031 5032 try { 5033 final AudioManager audioManager = getAudioManager(); 5034 5035 switch (effectId) { 5036 case SoundEffectConstants.CLICK: 5037 audioManager.playSoundEffect(AudioManager.FX_KEY_CLICK); 5038 return; 5039 case SoundEffectConstants.NAVIGATION_DOWN: 5040 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_DOWN); 5041 return; 5042 case SoundEffectConstants.NAVIGATION_LEFT: 5043 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_LEFT); 5044 return; 5045 case SoundEffectConstants.NAVIGATION_RIGHT: 5046 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_RIGHT); 5047 return; 5048 case SoundEffectConstants.NAVIGATION_UP: 5049 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_UP); 5050 return; 5051 default: 5052 throw new IllegalArgumentException("unknown effect id " + effectId + 5053 " not defined in " + SoundEffectConstants.class.getCanonicalName()); 5054 } 5055 } catch (IllegalStateException e) { 5056 // Exception thrown by getAudioManager() when mView is null 5057 Log.e(TAG, "FATAL EXCEPTION when attempting to play sound effect: " + e); 5058 e.printStackTrace(); 5059 } 5060 } 5061 5062 /** 5063 * {@inheritDoc} 5064 */ 5065 public boolean performHapticFeedback(int effectId, boolean always) { 5066 try { 5067 return mWindowSession.performHapticFeedback(mWindow, effectId, always); 5068 } catch (RemoteException e) { 5069 return false; 5070 } 5071 } 5072 5073 /** 5074 * {@inheritDoc} 5075 */ 5076 public View focusSearch(View focused, int direction) { 5077 checkThread(); 5078 if (!(mView instanceof ViewGroup)) { 5079 return null; 5080 } 5081 return FocusFinder.getInstance().findNextFocus((ViewGroup) mView, focused, direction); 5082 } 5083 5084 public void debug() { 5085 mView.debug(); 5086 } 5087 5088 public void dumpGfxInfo(int[] info) { 5089 info[0] = info[1] = 0; 5090 if (mView != null) { 5091 getGfxInfo(mView, info); 5092 } 5093 } 5094 5095 private static void getGfxInfo(View view, int[] info) { 5096 DisplayList displayList = view.mDisplayList; 5097 info[0]++; 5098 if (displayList != null) { 5099 info[1] += displayList.getSize(); 5100 } 5101 5102 if (view instanceof ViewGroup) { 5103 ViewGroup group = (ViewGroup) view; 5104 5105 int count = group.getChildCount(); 5106 for (int i = 0; i < count; i++) { 5107 getGfxInfo(group.getChildAt(i), info); 5108 } 5109 } 5110 } 5111 5112 /** 5113 * @param immediate True, do now if not in traversal. False, put on queue and do later. 5114 * @return True, request has been queued. False, request has been completed. 5115 */ 5116 boolean die(boolean immediate) { 5117 // Make sure we do execute immediately if we are in the middle of a traversal or the damage 5118 // done by dispatchDetachedFromWindow will cause havoc on return. 5119 if (immediate && !mIsInTraversal) { 5120 doDie(); 5121 return false; 5122 } 5123 5124 if (!mIsDrawing) { 5125 destroyHardwareRenderer(); 5126 } else { 5127 Log.e(TAG, "Attempting to destroy the window while drawing!\n" + 5128 " window=" + this + ", title=" + mWindowAttributes.getTitle()); 5129 } 5130 mHandler.sendEmptyMessage(MSG_DIE); 5131 return true; 5132 } 5133 5134 void doDie() { 5135 checkThread(); 5136 if (LOCAL_LOGV) Log.v(TAG, "DIE in " + this + " of " + mSurface); 5137 synchronized (this) { 5138 if (mRemoved) { 5139 return; 5140 } 5141 mRemoved = true; 5142 if (mAdded) { 5143 dispatchDetachedFromWindow(); 5144 } 5145 5146 if (mAdded && !mFirst) { 5147 invalidateDisplayLists(); 5148 destroyHardwareRenderer(); 5149 5150 if (mView != null) { 5151 int viewVisibility = mView.getVisibility(); 5152 boolean viewVisibilityChanged = mViewVisibility != viewVisibility; 5153 if (mWindowAttributesChanged || viewVisibilityChanged) { 5154 // If layout params have been changed, first give them 5155 // to the window manager to make sure it has the correct 5156 // animation info. 5157 try { 5158 if ((relayoutWindow(mWindowAttributes, viewVisibility, false) 5159 & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 5160 mWindowSession.finishDrawing(mWindow); 5161 } 5162 } catch (RemoteException e) { 5163 } 5164 } 5165 5166 mSurface.release(); 5167 } 5168 } 5169 5170 mAdded = false; 5171 } 5172 WindowManagerGlobal.getInstance().doRemoveView(this); 5173 } 5174 5175 public void requestUpdateConfiguration(Configuration config) { 5176 Message msg = mHandler.obtainMessage(MSG_UPDATE_CONFIGURATION, config); 5177 mHandler.sendMessage(msg); 5178 } 5179 5180 public void loadSystemProperties() { 5181 mHandler.post(new Runnable() { 5182 @Override 5183 public void run() { 5184 // Profiling 5185 mProfileRendering = SystemProperties.getBoolean(PROPERTY_PROFILE_RENDERING, false); 5186 profileRendering(mAttachInfo.mHasWindowFocus); 5187 5188 // Media (used by sound effects) 5189 mMediaDisabled = SystemProperties.getBoolean(PROPERTY_MEDIA_DISABLED, false); 5190 5191 // Hardware rendering 5192 if (mAttachInfo.mHardwareRenderer != null) { 5193 if (mAttachInfo.mHardwareRenderer.loadSystemProperties(mHolder.getSurface())) { 5194 invalidate(); 5195 } 5196 } 5197 5198 // Layout debugging 5199 boolean layout = SystemProperties.getBoolean(View.DEBUG_LAYOUT_PROPERTY, false); 5200 if (layout != mAttachInfo.mDebugLayout) { 5201 mAttachInfo.mDebugLayout = layout; 5202 if (!mHandler.hasMessages(MSG_INVALIDATE_WORLD)) { 5203 mHandler.sendEmptyMessageDelayed(MSG_INVALIDATE_WORLD, 200); 5204 } 5205 } 5206 } 5207 }); 5208 } 5209 5210 private void destroyHardwareRenderer() { 5211 AttachInfo attachInfo = mAttachInfo; 5212 HardwareRenderer hardwareRenderer = attachInfo.mHardwareRenderer; 5213 5214 if (hardwareRenderer != null) { 5215 if (mView != null) { 5216 hardwareRenderer.destroyHardwareResources(mView); 5217 } 5218 hardwareRenderer.destroy(true); 5219 hardwareRenderer.setRequested(false); 5220 5221 attachInfo.mHardwareRenderer = null; 5222 attachInfo.mHardwareAccelerated = false; 5223 } 5224 } 5225 5226 public void dispatchFinishInputConnection(InputConnection connection) { 5227 Message msg = mHandler.obtainMessage(MSG_FINISH_INPUT_CONNECTION, connection); 5228 mHandler.sendMessage(msg); 5229 } 5230 5231 public void dispatchResized(Rect frame, Rect overscanInsets, Rect contentInsets, 5232 Rect visibleInsets, boolean reportDraw, Configuration newConfig) { 5233 if (DEBUG_LAYOUT) Log.v(TAG, "Resizing " + this + ": frame=" + frame.toShortString() 5234 + " contentInsets=" + contentInsets.toShortString() 5235 + " visibleInsets=" + visibleInsets.toShortString() 5236 + " reportDraw=" + reportDraw); 5237 Message msg = mHandler.obtainMessage(reportDraw ? MSG_RESIZED_REPORT : MSG_RESIZED); 5238 if (mTranslator != null) { 5239 mTranslator.translateRectInScreenToAppWindow(frame); 5240 mTranslator.translateRectInScreenToAppWindow(overscanInsets); 5241 mTranslator.translateRectInScreenToAppWindow(contentInsets); 5242 mTranslator.translateRectInScreenToAppWindow(visibleInsets); 5243 } 5244 SomeArgs args = SomeArgs.obtain(); 5245 final boolean sameProcessCall = (Binder.getCallingPid() == android.os.Process.myPid()); 5246 args.arg1 = sameProcessCall ? new Rect(frame) : frame; 5247 args.arg2 = sameProcessCall ? new Rect(contentInsets) : contentInsets; 5248 args.arg3 = sameProcessCall ? new Rect(visibleInsets) : visibleInsets; 5249 args.arg4 = sameProcessCall && newConfig != null ? new Configuration(newConfig) : newConfig; 5250 args.arg5 = sameProcessCall ? new Rect(overscanInsets) : overscanInsets; 5251 msg.obj = args; 5252 mHandler.sendMessage(msg); 5253 } 5254 5255 public void dispatchMoved(int newX, int newY) { 5256 if (DEBUG_LAYOUT) Log.v(TAG, "Window moved " + this + ": newX=" + newX + " newY=" + newY); 5257 if (mTranslator != null) { 5258 PointF point = new PointF(newX, newY); 5259 mTranslator.translatePointInScreenToAppWindow(point); 5260 newX = (int) (point.x + 0.5); 5261 newY = (int) (point.y + 0.5); 5262 } 5263 Message msg = mHandler.obtainMessage(MSG_WINDOW_MOVED, newX, newY); 5264 mHandler.sendMessage(msg); 5265 } 5266 5267 /** 5268 * Represents a pending input event that is waiting in a queue. 5269 * 5270 * Input events are processed in serial order by the timestamp specified by 5271 * {@link InputEvent#getEventTimeNano()}. In general, the input dispatcher delivers 5272 * one input event to the application at a time and waits for the application 5273 * to finish handling it before delivering the next one. 5274 * 5275 * However, because the application or IME can synthesize and inject multiple 5276 * key events at a time without going through the input dispatcher, we end up 5277 * needing a queue on the application's side. 5278 */ 5279 private static final class QueuedInputEvent { 5280 public static final int FLAG_DELIVER_POST_IME = 1 << 0; 5281 public static final int FLAG_DEFERRED = 1 << 1; 5282 public static final int FLAG_FINISHED = 1 << 2; 5283 public static final int FLAG_FINISHED_HANDLED = 1 << 3; 5284 public static final int FLAG_RESYNTHESIZED = 1 << 4; 5285 5286 public QueuedInputEvent mNext; 5287 5288 public InputEvent mEvent; 5289 public InputEventReceiver mReceiver; 5290 public int mFlags; 5291 5292 public boolean shouldSkipIme() { 5293 if ((mFlags & FLAG_DELIVER_POST_IME) != 0) { 5294 return true; 5295 } 5296 return mEvent instanceof MotionEvent 5297 && mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER); 5298 } 5299 } 5300 5301 private QueuedInputEvent obtainQueuedInputEvent(InputEvent event, 5302 InputEventReceiver receiver, int flags) { 5303 QueuedInputEvent q = mQueuedInputEventPool; 5304 if (q != null) { 5305 mQueuedInputEventPoolSize -= 1; 5306 mQueuedInputEventPool = q.mNext; 5307 q.mNext = null; 5308 } else { 5309 q = new QueuedInputEvent(); 5310 } 5311 5312 q.mEvent = event; 5313 q.mReceiver = receiver; 5314 q.mFlags = flags; 5315 return q; 5316 } 5317 5318 private void recycleQueuedInputEvent(QueuedInputEvent q) { 5319 q.mEvent = null; 5320 q.mReceiver = null; 5321 5322 if (mQueuedInputEventPoolSize < MAX_QUEUED_INPUT_EVENT_POOL_SIZE) { 5323 mQueuedInputEventPoolSize += 1; 5324 q.mNext = mQueuedInputEventPool; 5325 mQueuedInputEventPool = q; 5326 } 5327 } 5328 5329 void enqueueInputEvent(InputEvent event) { 5330 enqueueInputEvent(event, null, 0, false); 5331 } 5332 5333 void enqueueInputEvent(InputEvent event, 5334 InputEventReceiver receiver, int flags, boolean processImmediately) { 5335 QueuedInputEvent q = obtainQueuedInputEvent(event, receiver, flags); 5336 5337 // Always enqueue the input event in order, regardless of its time stamp. 5338 // We do this because the application or the IME may inject key events 5339 // in response to touch events and we want to ensure that the injected keys 5340 // are processed in the order they were received and we cannot trust that 5341 // the time stamp of injected events are monotonic. 5342 QueuedInputEvent last = mPendingInputEventTail; 5343 if (last == null) { 5344 mPendingInputEventHead = q; 5345 mPendingInputEventTail = q; 5346 } else { 5347 last.mNext = q; 5348 mPendingInputEventTail = q; 5349 } 5350 mPendingInputEventCount += 1; 5351 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 5352 mPendingInputEventCount); 5353 5354 if (processImmediately) { 5355 doProcessInputEvents(); 5356 } else { 5357 scheduleProcessInputEvents(); 5358 } 5359 } 5360 5361 private void scheduleProcessInputEvents() { 5362 if (!mProcessInputEventsScheduled) { 5363 mProcessInputEventsScheduled = true; 5364 Message msg = mHandler.obtainMessage(MSG_PROCESS_INPUT_EVENTS); 5365 msg.setAsynchronous(true); 5366 mHandler.sendMessage(msg); 5367 } 5368 } 5369 5370 void doProcessInputEvents() { 5371 // Deliver all pending input events in the queue. 5372 while (mPendingInputEventHead != null) { 5373 QueuedInputEvent q = mPendingInputEventHead; 5374 mPendingInputEventHead = q.mNext; 5375 if (mPendingInputEventHead == null) { 5376 mPendingInputEventTail = null; 5377 } 5378 q.mNext = null; 5379 5380 mPendingInputEventCount -= 1; 5381 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 5382 mPendingInputEventCount); 5383 5384 deliverInputEvent(q); 5385 } 5386 5387 // We are done processing all input events that we can process right now 5388 // so we can clear the pending flag immediately. 5389 if (mProcessInputEventsScheduled) { 5390 mProcessInputEventsScheduled = false; 5391 mHandler.removeMessages(MSG_PROCESS_INPUT_EVENTS); 5392 } 5393 } 5394 5395 private void deliverInputEvent(QueuedInputEvent q) { 5396 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "deliverInputEvent"); 5397 try { 5398 if (mInputEventConsistencyVerifier != null) { 5399 mInputEventConsistencyVerifier.onInputEvent(q.mEvent, 0); 5400 } 5401 5402 InputStage stage = q.shouldSkipIme() ? mFirstPostImeInputStage : mFirstInputStage; 5403 if (stage != null) { 5404 stage.deliver(q); 5405 } else { 5406 finishInputEvent(q); 5407 } 5408 } finally { 5409 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 5410 } 5411 } 5412 5413 private void finishInputEvent(QueuedInputEvent q) { 5414 if (q.mReceiver != null) { 5415 boolean handled = (q.mFlags & QueuedInputEvent.FLAG_FINISHED_HANDLED) != 0; 5416 q.mReceiver.finishInputEvent(q.mEvent, handled); 5417 } else { 5418 q.mEvent.recycleIfNeededAfterDispatch(); 5419 } 5420 5421 recycleQueuedInputEvent(q); 5422 } 5423 5424 static boolean isTerminalInputEvent(InputEvent event) { 5425 if (event instanceof KeyEvent) { 5426 final KeyEvent keyEvent = (KeyEvent)event; 5427 return keyEvent.getAction() == KeyEvent.ACTION_UP; 5428 } else { 5429 final MotionEvent motionEvent = (MotionEvent)event; 5430 final int action = motionEvent.getAction(); 5431 return action == MotionEvent.ACTION_UP 5432 || action == MotionEvent.ACTION_CANCEL 5433 || action == MotionEvent.ACTION_HOVER_EXIT; 5434 } 5435 } 5436 5437 void scheduleConsumeBatchedInput() { 5438 if (!mConsumeBatchedInputScheduled) { 5439 mConsumeBatchedInputScheduled = true; 5440 mChoreographer.postCallback(Choreographer.CALLBACK_INPUT, 5441 mConsumedBatchedInputRunnable, null); 5442 } 5443 } 5444 5445 void unscheduleConsumeBatchedInput() { 5446 if (mConsumeBatchedInputScheduled) { 5447 mConsumeBatchedInputScheduled = false; 5448 mChoreographer.removeCallbacks(Choreographer.CALLBACK_INPUT, 5449 mConsumedBatchedInputRunnable, null); 5450 } 5451 } 5452 5453 void doConsumeBatchedInput(long frameTimeNanos) { 5454 if (mConsumeBatchedInputScheduled) { 5455 mConsumeBatchedInputScheduled = false; 5456 if (mInputEventReceiver != null) { 5457 mInputEventReceiver.consumeBatchedInputEvents(frameTimeNanos); 5458 } 5459 doProcessInputEvents(); 5460 } 5461 } 5462 5463 final class TraversalRunnable implements Runnable { 5464 @Override 5465 public void run() { 5466 doTraversal(); 5467 } 5468 } 5469 final TraversalRunnable mTraversalRunnable = new TraversalRunnable(); 5470 5471 final class WindowInputEventReceiver extends InputEventReceiver { 5472 public WindowInputEventReceiver(InputChannel inputChannel, Looper looper) { 5473 super(inputChannel, looper); 5474 } 5475 5476 @Override 5477 public void onInputEvent(InputEvent event) { 5478 enqueueInputEvent(event, this, 0, true); 5479 } 5480 5481 @Override 5482 public void onBatchedInputEventPending() { 5483 scheduleConsumeBatchedInput(); 5484 } 5485 5486 @Override 5487 public void dispose() { 5488 unscheduleConsumeBatchedInput(); 5489 super.dispose(); 5490 } 5491 } 5492 WindowInputEventReceiver mInputEventReceiver; 5493 5494 final class ConsumeBatchedInputRunnable implements Runnable { 5495 @Override 5496 public void run() { 5497 doConsumeBatchedInput(mChoreographer.getFrameTimeNanos()); 5498 } 5499 } 5500 final ConsumeBatchedInputRunnable mConsumedBatchedInputRunnable = 5501 new ConsumeBatchedInputRunnable(); 5502 boolean mConsumeBatchedInputScheduled; 5503 5504 final class InvalidateOnAnimationRunnable implements Runnable { 5505 private boolean mPosted; 5506 private ArrayList<View> mViews = new ArrayList<View>(); 5507 private ArrayList<AttachInfo.InvalidateInfo> mViewRects = 5508 new ArrayList<AttachInfo.InvalidateInfo>(); 5509 private View[] mTempViews; 5510 private AttachInfo.InvalidateInfo[] mTempViewRects; 5511 5512 public void addView(View view) { 5513 synchronized (this) { 5514 mViews.add(view); 5515 postIfNeededLocked(); 5516 } 5517 } 5518 5519 public void addViewRect(AttachInfo.InvalidateInfo info) { 5520 synchronized (this) { 5521 mViewRects.add(info); 5522 postIfNeededLocked(); 5523 } 5524 } 5525 5526 public void removeView(View view) { 5527 synchronized (this) { 5528 mViews.remove(view); 5529 5530 for (int i = mViewRects.size(); i-- > 0; ) { 5531 AttachInfo.InvalidateInfo info = mViewRects.get(i); 5532 if (info.target == view) { 5533 mViewRects.remove(i); 5534 info.recycle(); 5535 } 5536 } 5537 5538 if (mPosted && mViews.isEmpty() && mViewRects.isEmpty()) { 5539 mChoreographer.removeCallbacks(Choreographer.CALLBACK_ANIMATION, this, null); 5540 mPosted = false; 5541 } 5542 } 5543 } 5544 5545 @Override 5546 public void run() { 5547 final int viewCount; 5548 final int viewRectCount; 5549 synchronized (this) { 5550 mPosted = false; 5551 5552 viewCount = mViews.size(); 5553 if (viewCount != 0) { 5554 mTempViews = mViews.toArray(mTempViews != null 5555 ? mTempViews : new View[viewCount]); 5556 mViews.clear(); 5557 } 5558 5559 viewRectCount = mViewRects.size(); 5560 if (viewRectCount != 0) { 5561 mTempViewRects = mViewRects.toArray(mTempViewRects != null 5562 ? mTempViewRects : new AttachInfo.InvalidateInfo[viewRectCount]); 5563 mViewRects.clear(); 5564 } 5565 } 5566 5567 for (int i = 0; i < viewCount; i++) { 5568 mTempViews[i].invalidate(); 5569 mTempViews[i] = null; 5570 } 5571 5572 for (int i = 0; i < viewRectCount; i++) { 5573 final View.AttachInfo.InvalidateInfo info = mTempViewRects[i]; 5574 info.target.invalidate(info.left, info.top, info.right, info.bottom); 5575 info.recycle(); 5576 } 5577 } 5578 5579 private void postIfNeededLocked() { 5580 if (!mPosted) { 5581 mChoreographer.postCallback(Choreographer.CALLBACK_ANIMATION, this, null); 5582 mPosted = true; 5583 } 5584 } 5585 } 5586 final InvalidateOnAnimationRunnable mInvalidateOnAnimationRunnable = 5587 new InvalidateOnAnimationRunnable(); 5588 5589 public void dispatchInvalidateDelayed(View view, long delayMilliseconds) { 5590 Message msg = mHandler.obtainMessage(MSG_INVALIDATE, view); 5591 mHandler.sendMessageDelayed(msg, delayMilliseconds); 5592 } 5593 5594 public void dispatchInvalidateRectDelayed(AttachInfo.InvalidateInfo info, 5595 long delayMilliseconds) { 5596 final Message msg = mHandler.obtainMessage(MSG_INVALIDATE_RECT, info); 5597 mHandler.sendMessageDelayed(msg, delayMilliseconds); 5598 } 5599 5600 public void dispatchInvalidateOnAnimation(View view) { 5601 mInvalidateOnAnimationRunnable.addView(view); 5602 } 5603 5604 public void dispatchInvalidateRectOnAnimation(AttachInfo.InvalidateInfo info) { 5605 mInvalidateOnAnimationRunnable.addViewRect(info); 5606 } 5607 5608 public void enqueueDisplayList(DisplayList displayList) { 5609 mDisplayLists.add(displayList); 5610 } 5611 5612 public void cancelInvalidate(View view) { 5613 mHandler.removeMessages(MSG_INVALIDATE, view); 5614 // fixme: might leak the AttachInfo.InvalidateInfo objects instead of returning 5615 // them to the pool 5616 mHandler.removeMessages(MSG_INVALIDATE_RECT, view); 5617 mInvalidateOnAnimationRunnable.removeView(view); 5618 } 5619 5620 public void dispatchInputEvent(InputEvent event) { 5621 Message msg = mHandler.obtainMessage(MSG_DISPATCH_INPUT_EVENT, event); 5622 msg.setAsynchronous(true); 5623 mHandler.sendMessage(msg); 5624 } 5625 5626 public void dispatchKeyFromIme(KeyEvent event) { 5627 Message msg = mHandler.obtainMessage(MSG_DISPATCH_KEY_FROM_IME, event); 5628 msg.setAsynchronous(true); 5629 mHandler.sendMessage(msg); 5630 } 5631 5632 public void dispatchUnhandledKey(KeyEvent event) { 5633 if ((event.getFlags() & KeyEvent.FLAG_FALLBACK) == 0) { 5634 final KeyCharacterMap kcm = event.getKeyCharacterMap(); 5635 final int keyCode = event.getKeyCode(); 5636 final int metaState = event.getMetaState(); 5637 5638 // Check for fallback actions specified by the key character map. 5639 KeyCharacterMap.FallbackAction fallbackAction = 5640 kcm.getFallbackAction(keyCode, metaState); 5641 if (fallbackAction != null) { 5642 final int flags = event.getFlags() | KeyEvent.FLAG_FALLBACK; 5643 KeyEvent fallbackEvent = KeyEvent.obtain( 5644 event.getDownTime(), event.getEventTime(), 5645 event.getAction(), fallbackAction.keyCode, 5646 event.getRepeatCount(), fallbackAction.metaState, 5647 event.getDeviceId(), event.getScanCode(), 5648 flags, event.getSource(), null); 5649 fallbackAction.recycle(); 5650 5651 dispatchInputEvent(fallbackEvent); 5652 } 5653 } 5654 } 5655 5656 public void dispatchAppVisibility(boolean visible) { 5657 Message msg = mHandler.obtainMessage(MSG_DISPATCH_APP_VISIBILITY); 5658 msg.arg1 = visible ? 1 : 0; 5659 mHandler.sendMessage(msg); 5660 } 5661 5662 public void dispatchScreenStateChange(boolean on) { 5663 Message msg = mHandler.obtainMessage(MSG_DISPATCH_SCREEN_STATE); 5664 msg.arg1 = on ? 1 : 0; 5665 mHandler.sendMessage(msg); 5666 } 5667 5668 public void dispatchGetNewSurface() { 5669 Message msg = mHandler.obtainMessage(MSG_DISPATCH_GET_NEW_SURFACE); 5670 mHandler.sendMessage(msg); 5671 } 5672 5673 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 5674 Message msg = Message.obtain(); 5675 msg.what = MSG_WINDOW_FOCUS_CHANGED; 5676 msg.arg1 = hasFocus ? 1 : 0; 5677 msg.arg2 = inTouchMode ? 1 : 0; 5678 mHandler.sendMessage(msg); 5679 } 5680 5681 public void dispatchCloseSystemDialogs(String reason) { 5682 Message msg = Message.obtain(); 5683 msg.what = MSG_CLOSE_SYSTEM_DIALOGS; 5684 msg.obj = reason; 5685 mHandler.sendMessage(msg); 5686 } 5687 5688 public void dispatchDragEvent(DragEvent event) { 5689 final int what; 5690 if (event.getAction() == DragEvent.ACTION_DRAG_LOCATION) { 5691 what = MSG_DISPATCH_DRAG_LOCATION_EVENT; 5692 mHandler.removeMessages(what); 5693 } else { 5694 what = MSG_DISPATCH_DRAG_EVENT; 5695 } 5696 Message msg = mHandler.obtainMessage(what, event); 5697 mHandler.sendMessage(msg); 5698 } 5699 5700 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 5701 int localValue, int localChanges) { 5702 SystemUiVisibilityInfo args = new SystemUiVisibilityInfo(); 5703 args.seq = seq; 5704 args.globalVisibility = globalVisibility; 5705 args.localValue = localValue; 5706 args.localChanges = localChanges; 5707 mHandler.sendMessage(mHandler.obtainMessage(MSG_DISPATCH_SYSTEM_UI_VISIBILITY, args)); 5708 } 5709 5710 public void dispatchDoneAnimating() { 5711 mHandler.sendEmptyMessage(MSG_DISPATCH_DONE_ANIMATING); 5712 } 5713 5714 public void dispatchCheckFocus() { 5715 if (!mHandler.hasMessages(MSG_CHECK_FOCUS)) { 5716 // This will result in a call to checkFocus() below. 5717 mHandler.sendEmptyMessage(MSG_CHECK_FOCUS); 5718 } 5719 } 5720 5721 /** 5722 * Post a callback to send a 5723 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 5724 * This event is send at most once every 5725 * {@link ViewConfiguration#getSendRecurringAccessibilityEventsInterval()}. 5726 */ 5727 private void postSendWindowContentChangedCallback(View source) { 5728 if (mSendWindowContentChangedAccessibilityEvent == null) { 5729 mSendWindowContentChangedAccessibilityEvent = 5730 new SendWindowContentChangedAccessibilityEvent(); 5731 } 5732 mSendWindowContentChangedAccessibilityEvent.runOrPost(source); 5733 } 5734 5735 /** 5736 * Remove a posted callback to send a 5737 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 5738 */ 5739 private void removeSendWindowContentChangedCallback() { 5740 if (mSendWindowContentChangedAccessibilityEvent != null) { 5741 mHandler.removeCallbacks(mSendWindowContentChangedAccessibilityEvent); 5742 } 5743 } 5744 5745 public boolean showContextMenuForChild(View originalView) { 5746 return false; 5747 } 5748 5749 public ActionMode startActionModeForChild(View originalView, ActionMode.Callback callback) { 5750 return null; 5751 } 5752 5753 public void createContextMenu(ContextMenu menu) { 5754 } 5755 5756 public void childDrawableStateChanged(View child) { 5757 } 5758 5759 public boolean requestSendAccessibilityEvent(View child, AccessibilityEvent event) { 5760 if (mView == null) { 5761 return false; 5762 } 5763 // Intercept accessibility focus events fired by virtual nodes to keep 5764 // track of accessibility focus position in such nodes. 5765 final int eventType = event.getEventType(); 5766 switch (eventType) { 5767 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUSED: { 5768 final long sourceNodeId = event.getSourceNodeId(); 5769 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 5770 sourceNodeId); 5771 View source = mView.findViewByAccessibilityId(accessibilityViewId); 5772 if (source != null) { 5773 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 5774 if (provider != null) { 5775 AccessibilityNodeInfo node = provider.createAccessibilityNodeInfo( 5776 AccessibilityNodeInfo.getVirtualDescendantId(sourceNodeId)); 5777 setAccessibilityFocus(source, node); 5778 } 5779 } 5780 } break; 5781 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUS_CLEARED: { 5782 final long sourceNodeId = event.getSourceNodeId(); 5783 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 5784 sourceNodeId); 5785 View source = mView.findViewByAccessibilityId(accessibilityViewId); 5786 if (source != null) { 5787 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 5788 if (provider != null) { 5789 setAccessibilityFocus(null, null); 5790 } 5791 } 5792 } break; 5793 } 5794 mAccessibilityManager.sendAccessibilityEvent(event); 5795 return true; 5796 } 5797 5798 @Override 5799 public void childAccessibilityStateChanged(View child) { 5800 postSendWindowContentChangedCallback(child); 5801 } 5802 5803 @Override 5804 public boolean canResolveLayoutDirection() { 5805 return true; 5806 } 5807 5808 @Override 5809 public boolean isLayoutDirectionResolved() { 5810 return true; 5811 } 5812 5813 @Override 5814 public int getLayoutDirection() { 5815 return View.LAYOUT_DIRECTION_RESOLVED_DEFAULT; 5816 } 5817 5818 @Override 5819 public boolean canResolveTextDirection() { 5820 return true; 5821 } 5822 5823 @Override 5824 public boolean isTextDirectionResolved() { 5825 return true; 5826 } 5827 5828 @Override 5829 public int getTextDirection() { 5830 return View.TEXT_DIRECTION_RESOLVED_DEFAULT; 5831 } 5832 5833 @Override 5834 public boolean canResolveTextAlignment() { 5835 return true; 5836 } 5837 5838 @Override 5839 public boolean isTextAlignmentResolved() { 5840 return true; 5841 } 5842 5843 @Override 5844 public int getTextAlignment() { 5845 return View.TEXT_ALIGNMENT_RESOLVED_DEFAULT; 5846 } 5847 5848 private View getCommonPredecessor(View first, View second) { 5849 if (mAttachInfo != null) { 5850 if (mTempHashSet == null) { 5851 mTempHashSet = new HashSet<View>(); 5852 } 5853 HashSet<View> seen = mTempHashSet; 5854 seen.clear(); 5855 View firstCurrent = first; 5856 while (firstCurrent != null) { 5857 seen.add(firstCurrent); 5858 ViewParent firstCurrentParent = firstCurrent.mParent; 5859 if (firstCurrentParent instanceof View) { 5860 firstCurrent = (View) firstCurrentParent; 5861 } else { 5862 firstCurrent = null; 5863 } 5864 } 5865 View secondCurrent = second; 5866 while (secondCurrent != null) { 5867 if (seen.contains(secondCurrent)) { 5868 seen.clear(); 5869 return secondCurrent; 5870 } 5871 ViewParent secondCurrentParent = secondCurrent.mParent; 5872 if (secondCurrentParent instanceof View) { 5873 secondCurrent = (View) secondCurrentParent; 5874 } else { 5875 secondCurrent = null; 5876 } 5877 } 5878 seen.clear(); 5879 } 5880 return null; 5881 } 5882 5883 void checkThread() { 5884 if (mThread != Thread.currentThread()) { 5885 throw new CalledFromWrongThreadException( 5886 "Only the original thread that created a view hierarchy can touch its views."); 5887 } 5888 } 5889 5890 public void requestDisallowInterceptTouchEvent(boolean disallowIntercept) { 5891 // ViewAncestor never intercepts touch event, so this can be a no-op 5892 } 5893 5894 public boolean requestChildRectangleOnScreen(View child, Rect rectangle, boolean immediate) { 5895 final boolean scrolled = scrollToRectOrFocus(rectangle, immediate); 5896 if (rectangle != null) { 5897 mTempRect.set(rectangle); 5898 mTempRect.offset(0, -mCurScrollY); 5899 mTempRect.offset(mAttachInfo.mWindowLeft, mAttachInfo.mWindowTop); 5900 try { 5901 mWindowSession.onRectangleOnScreenRequested(mWindow, mTempRect, immediate); 5902 } catch (RemoteException re) { 5903 /* ignore */ 5904 } 5905 } 5906 return scrolled; 5907 } 5908 5909 public void childHasTransientStateChanged(View child, boolean hasTransientState) { 5910 // Do nothing. 5911 } 5912 5913 void changeCanvasOpacity(boolean opaque) { 5914 // TODO(romainguy): recreate Canvas (software or hardware) to reflect the opacity change. 5915 Log.d(TAG, "changeCanvasOpacity: opaque=" + opaque); 5916 } 5917 5918 class TakenSurfaceHolder extends BaseSurfaceHolder { 5919 @Override 5920 public boolean onAllowLockCanvas() { 5921 return mDrawingAllowed; 5922 } 5923 5924 @Override 5925 public void onRelayoutContainer() { 5926 // Not currently interesting -- from changing between fixed and layout size. 5927 } 5928 5929 public void setFormat(int format) { 5930 ((RootViewSurfaceTaker)mView).setSurfaceFormat(format); 5931 } 5932 5933 public void setType(int type) { 5934 ((RootViewSurfaceTaker)mView).setSurfaceType(type); 5935 } 5936 5937 @Override 5938 public void onUpdateSurface() { 5939 // We take care of format and type changes on our own. 5940 throw new IllegalStateException("Shouldn't be here"); 5941 } 5942 5943 public boolean isCreating() { 5944 return mIsCreating; 5945 } 5946 5947 @Override 5948 public void setFixedSize(int width, int height) { 5949 throw new UnsupportedOperationException( 5950 "Currently only support sizing from layout"); 5951 } 5952 5953 public void setKeepScreenOn(boolean screenOn) { 5954 ((RootViewSurfaceTaker)mView).setSurfaceKeepScreenOn(screenOn); 5955 } 5956 } 5957 5958 static class W extends IWindow.Stub { 5959 private final WeakReference<ViewRootImpl> mViewAncestor; 5960 private final IWindowSession mWindowSession; 5961 5962 W(ViewRootImpl viewAncestor) { 5963 mViewAncestor = new WeakReference<ViewRootImpl>(viewAncestor); 5964 mWindowSession = viewAncestor.mWindowSession; 5965 } 5966 5967 public void resized(Rect frame, Rect overscanInsets, Rect contentInsets, 5968 Rect visibleInsets, boolean reportDraw, Configuration newConfig) { 5969 final ViewRootImpl viewAncestor = mViewAncestor.get(); 5970 if (viewAncestor != null) { 5971 viewAncestor.dispatchResized(frame, overscanInsets, contentInsets, 5972 visibleInsets, reportDraw, newConfig); 5973 } 5974 } 5975 5976 @Override 5977 public void moved(int newX, int newY) { 5978 final ViewRootImpl viewAncestor = mViewAncestor.get(); 5979 if (viewAncestor != null) { 5980 viewAncestor.dispatchMoved(newX, newY); 5981 } 5982 } 5983 5984 public void dispatchAppVisibility(boolean visible) { 5985 final ViewRootImpl viewAncestor = mViewAncestor.get(); 5986 if (viewAncestor != null) { 5987 viewAncestor.dispatchAppVisibility(visible); 5988 } 5989 } 5990 5991 public void dispatchScreenState(boolean on) { 5992 final ViewRootImpl viewAncestor = mViewAncestor.get(); 5993 if (viewAncestor != null) { 5994 viewAncestor.dispatchScreenStateChange(on); 5995 } 5996 } 5997 5998 public void dispatchGetNewSurface() { 5999 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6000 if (viewAncestor != null) { 6001 viewAncestor.dispatchGetNewSurface(); 6002 } 6003 } 6004 6005 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 6006 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6007 if (viewAncestor != null) { 6008 viewAncestor.windowFocusChanged(hasFocus, inTouchMode); 6009 } 6010 } 6011 6012 private static int checkCallingPermission(String permission) { 6013 try { 6014 return ActivityManagerNative.getDefault().checkPermission( 6015 permission, Binder.getCallingPid(), Binder.getCallingUid()); 6016 } catch (RemoteException e) { 6017 return PackageManager.PERMISSION_DENIED; 6018 } 6019 } 6020 6021 public void executeCommand(String command, String parameters, ParcelFileDescriptor out) { 6022 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6023 if (viewAncestor != null) { 6024 final View view = viewAncestor.mView; 6025 if (view != null) { 6026 if (checkCallingPermission(Manifest.permission.DUMP) != 6027 PackageManager.PERMISSION_GRANTED) { 6028 throw new SecurityException("Insufficient permissions to invoke" 6029 + " executeCommand() from pid=" + Binder.getCallingPid() 6030 + ", uid=" + Binder.getCallingUid()); 6031 } 6032 6033 OutputStream clientStream = null; 6034 try { 6035 clientStream = new ParcelFileDescriptor.AutoCloseOutputStream(out); 6036 ViewDebug.dispatchCommand(view, command, parameters, clientStream); 6037 } catch (IOException e) { 6038 e.printStackTrace(); 6039 } finally { 6040 if (clientStream != null) { 6041 try { 6042 clientStream.close(); 6043 } catch (IOException e) { 6044 e.printStackTrace(); 6045 } 6046 } 6047 } 6048 } 6049 } 6050 } 6051 6052 public void closeSystemDialogs(String reason) { 6053 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6054 if (viewAncestor != null) { 6055 viewAncestor.dispatchCloseSystemDialogs(reason); 6056 } 6057 } 6058 6059 public void dispatchWallpaperOffsets(float x, float y, float xStep, float yStep, 6060 boolean sync) { 6061 if (sync) { 6062 try { 6063 mWindowSession.wallpaperOffsetsComplete(asBinder()); 6064 } catch (RemoteException e) { 6065 } 6066 } 6067 } 6068 6069 public void dispatchWallpaperCommand(String action, int x, int y, 6070 int z, Bundle extras, boolean sync) { 6071 if (sync) { 6072 try { 6073 mWindowSession.wallpaperCommandComplete(asBinder(), null); 6074 } catch (RemoteException e) { 6075 } 6076 } 6077 } 6078 6079 /* Drag/drop */ 6080 public void dispatchDragEvent(DragEvent event) { 6081 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6082 if (viewAncestor != null) { 6083 viewAncestor.dispatchDragEvent(event); 6084 } 6085 } 6086 6087 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 6088 int localValue, int localChanges) { 6089 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6090 if (viewAncestor != null) { 6091 viewAncestor.dispatchSystemUiVisibilityChanged(seq, globalVisibility, 6092 localValue, localChanges); 6093 } 6094 } 6095 6096 public void doneAnimating() { 6097 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6098 if (viewAncestor != null) { 6099 viewAncestor.dispatchDoneAnimating(); 6100 } 6101 } 6102 } 6103 6104 public static final class CalledFromWrongThreadException extends AndroidRuntimeException { 6105 public CalledFromWrongThreadException(String msg) { 6106 super(msg); 6107 } 6108 } 6109 6110 private SurfaceHolder mHolder = new SurfaceHolder() { 6111 // we only need a SurfaceHolder for opengl. it would be nice 6112 // to implement everything else though, especially the callback 6113 // support (opengl doesn't make use of it right now, but eventually 6114 // will). 6115 public Surface getSurface() { 6116 return mSurface; 6117 } 6118 6119 public boolean isCreating() { 6120 return false; 6121 } 6122 6123 public void addCallback(Callback callback) { 6124 } 6125 6126 public void removeCallback(Callback callback) { 6127 } 6128 6129 public void setFixedSize(int width, int height) { 6130 } 6131 6132 public void setSizeFromLayout() { 6133 } 6134 6135 public void setFormat(int format) { 6136 } 6137 6138 public void setType(int type) { 6139 } 6140 6141 public void setKeepScreenOn(boolean screenOn) { 6142 } 6143 6144 public Canvas lockCanvas() { 6145 return null; 6146 } 6147 6148 public Canvas lockCanvas(Rect dirty) { 6149 return null; 6150 } 6151 6152 public void unlockCanvasAndPost(Canvas canvas) { 6153 } 6154 public Rect getSurfaceFrame() { 6155 return null; 6156 } 6157 }; 6158 6159 static RunQueue getRunQueue() { 6160 RunQueue rq = sRunQueues.get(); 6161 if (rq != null) { 6162 return rq; 6163 } 6164 rq = new RunQueue(); 6165 sRunQueues.set(rq); 6166 return rq; 6167 } 6168 6169 /** 6170 * The run queue is used to enqueue pending work from Views when no Handler is 6171 * attached. The work is executed during the next call to performTraversals on 6172 * the thread. 6173 * @hide 6174 */ 6175 static final class RunQueue { 6176 private final ArrayList<HandlerAction> mActions = new ArrayList<HandlerAction>(); 6177 6178 void post(Runnable action) { 6179 postDelayed(action, 0); 6180 } 6181 6182 void postDelayed(Runnable action, long delayMillis) { 6183 HandlerAction handlerAction = new HandlerAction(); 6184 handlerAction.action = action; 6185 handlerAction.delay = delayMillis; 6186 6187 synchronized (mActions) { 6188 mActions.add(handlerAction); 6189 } 6190 } 6191 6192 void removeCallbacks(Runnable action) { 6193 final HandlerAction handlerAction = new HandlerAction(); 6194 handlerAction.action = action; 6195 6196 synchronized (mActions) { 6197 final ArrayList<HandlerAction> actions = mActions; 6198 6199 while (actions.remove(handlerAction)) { 6200 // Keep going 6201 } 6202 } 6203 } 6204 6205 void executeActions(Handler handler) { 6206 synchronized (mActions) { 6207 final ArrayList<HandlerAction> actions = mActions; 6208 final int count = actions.size(); 6209 6210 for (int i = 0; i < count; i++) { 6211 final HandlerAction handlerAction = actions.get(i); 6212 handler.postDelayed(handlerAction.action, handlerAction.delay); 6213 } 6214 6215 actions.clear(); 6216 } 6217 } 6218 6219 private static class HandlerAction { 6220 Runnable action; 6221 long delay; 6222 6223 @Override 6224 public boolean equals(Object o) { 6225 if (this == o) return true; 6226 if (o == null || getClass() != o.getClass()) return false; 6227 6228 HandlerAction that = (HandlerAction) o; 6229 return !(action != null ? !action.equals(that.action) : that.action != null); 6230 6231 } 6232 6233 @Override 6234 public int hashCode() { 6235 int result = action != null ? action.hashCode() : 0; 6236 result = 31 * result + (int) (delay ^ (delay >>> 32)); 6237 return result; 6238 } 6239 } 6240 } 6241 6242 /** 6243 * Class for managing the accessibility interaction connection 6244 * based on the global accessibility state. 6245 */ 6246 final class AccessibilityInteractionConnectionManager 6247 implements AccessibilityStateChangeListener { 6248 public void onAccessibilityStateChanged(boolean enabled) { 6249 if (enabled) { 6250 ensureConnection(); 6251 if (mAttachInfo != null && mAttachInfo.mHasWindowFocus) { 6252 mView.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 6253 View focusedView = mView.findFocus(); 6254 if (focusedView != null && focusedView != mView) { 6255 focusedView.sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_FOCUSED); 6256 } 6257 } 6258 } else { 6259 ensureNoConnection(); 6260 mHandler.obtainMessage(MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST).sendToTarget(); 6261 } 6262 } 6263 6264 public void ensureConnection() { 6265 if (mAttachInfo != null) { 6266 final boolean registered = 6267 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED; 6268 if (!registered) { 6269 mAttachInfo.mAccessibilityWindowId = 6270 mAccessibilityManager.addAccessibilityInteractionConnection(mWindow, 6271 new AccessibilityInteractionConnection(ViewRootImpl.this)); 6272 } 6273 } 6274 } 6275 6276 public void ensureNoConnection() { 6277 final boolean registered = 6278 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED; 6279 if (registered) { 6280 mAttachInfo.mAccessibilityWindowId = AccessibilityNodeInfo.UNDEFINED; 6281 mAccessibilityManager.removeAccessibilityInteractionConnection(mWindow); 6282 } 6283 } 6284 } 6285 6286 /** 6287 * This class is an interface this ViewAncestor provides to the 6288 * AccessibilityManagerService to the latter can interact with 6289 * the view hierarchy in this ViewAncestor. 6290 */ 6291 static final class AccessibilityInteractionConnection 6292 extends IAccessibilityInteractionConnection.Stub { 6293 private final WeakReference<ViewRootImpl> mViewRootImpl; 6294 6295 AccessibilityInteractionConnection(ViewRootImpl viewRootImpl) { 6296 mViewRootImpl = new WeakReference<ViewRootImpl>(viewRootImpl); 6297 } 6298 6299 @Override 6300 public void findAccessibilityNodeInfoByAccessibilityId(long accessibilityNodeId, 6301 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 6302 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6303 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6304 if (viewRootImpl != null && viewRootImpl.mView != null) { 6305 viewRootImpl.getAccessibilityInteractionController() 6306 .findAccessibilityNodeInfoByAccessibilityIdClientThread(accessibilityNodeId, 6307 interactionId, callback, flags, interrogatingPid, interrogatingTid, 6308 spec); 6309 } else { 6310 // We cannot make the call and notify the caller so it does not wait. 6311 try { 6312 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 6313 } catch (RemoteException re) { 6314 /* best effort - ignore */ 6315 } 6316 } 6317 } 6318 6319 @Override 6320 public void performAccessibilityAction(long accessibilityNodeId, int action, 6321 Bundle arguments, int interactionId, 6322 IAccessibilityInteractionConnectionCallback callback, int flags, 6323 int interogatingPid, long interrogatingTid) { 6324 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6325 if (viewRootImpl != null && viewRootImpl.mView != null) { 6326 viewRootImpl.getAccessibilityInteractionController() 6327 .performAccessibilityActionClientThread(accessibilityNodeId, action, arguments, 6328 interactionId, callback, flags, interogatingPid, interrogatingTid); 6329 } else { 6330 // We cannot make the call and notify the caller so it does not wait. 6331 try { 6332 callback.setPerformAccessibilityActionResult(false, interactionId); 6333 } catch (RemoteException re) { 6334 /* best effort - ignore */ 6335 } 6336 } 6337 } 6338 6339 @Override 6340 public void findAccessibilityNodeInfosByViewId(long accessibilityNodeId, 6341 String viewId, int interactionId, 6342 IAccessibilityInteractionConnectionCallback callback, int flags, 6343 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6344 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6345 if (viewRootImpl != null && viewRootImpl.mView != null) { 6346 viewRootImpl.getAccessibilityInteractionController() 6347 .findAccessibilityNodeInfosByViewIdClientThread(accessibilityNodeId, 6348 viewId, interactionId, callback, flags, interrogatingPid, 6349 interrogatingTid, spec); 6350 } else { 6351 // We cannot make the call and notify the caller so it does not wait. 6352 try { 6353 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6354 } catch (RemoteException re) { 6355 /* best effort - ignore */ 6356 } 6357 } 6358 } 6359 6360 @Override 6361 public void findAccessibilityNodeInfosByText(long accessibilityNodeId, String text, 6362 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 6363 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6364 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6365 if (viewRootImpl != null && viewRootImpl.mView != null) { 6366 viewRootImpl.getAccessibilityInteractionController() 6367 .findAccessibilityNodeInfosByTextClientThread(accessibilityNodeId, text, 6368 interactionId, callback, flags, interrogatingPid, interrogatingTid, 6369 spec); 6370 } else { 6371 // We cannot make the call and notify the caller so it does not wait. 6372 try { 6373 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 6374 } catch (RemoteException re) { 6375 /* best effort - ignore */ 6376 } 6377 } 6378 } 6379 6380 @Override 6381 public void findFocus(long accessibilityNodeId, int focusType, int interactionId, 6382 IAccessibilityInteractionConnectionCallback callback, int flags, 6383 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6384 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6385 if (viewRootImpl != null && viewRootImpl.mView != null) { 6386 viewRootImpl.getAccessibilityInteractionController() 6387 .findFocusClientThread(accessibilityNodeId, focusType, interactionId, callback, 6388 flags, interrogatingPid, interrogatingTid, spec); 6389 } else { 6390 // We cannot make the call and notify the caller so it does not wait. 6391 try { 6392 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6393 } catch (RemoteException re) { 6394 /* best effort - ignore */ 6395 } 6396 } 6397 } 6398 6399 @Override 6400 public void focusSearch(long accessibilityNodeId, int direction, int interactionId, 6401 IAccessibilityInteractionConnectionCallback callback, int flags, 6402 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6403 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6404 if (viewRootImpl != null && viewRootImpl.mView != null) { 6405 viewRootImpl.getAccessibilityInteractionController() 6406 .focusSearchClientThread(accessibilityNodeId, direction, interactionId, 6407 callback, flags, interrogatingPid, interrogatingTid, spec); 6408 } else { 6409 // We cannot make the call and notify the caller so it does not wait. 6410 try { 6411 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6412 } catch (RemoteException re) { 6413 /* best effort - ignore */ 6414 } 6415 } 6416 } 6417 } 6418 6419 private class SendWindowContentChangedAccessibilityEvent implements Runnable { 6420 public View mSource; 6421 public long mLastEventTimeMillis; 6422 6423 public void run() { 6424 // The accessibility may be turned off while we were waiting so check again. 6425 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 6426 mLastEventTimeMillis = SystemClock.uptimeMillis(); 6427 AccessibilityEvent event = AccessibilityEvent.obtain(); 6428 event.setEventType(AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED); 6429 event.setContentChangeType(AccessibilityEvent.CONTENT_CHANGE_TYPE_SUBTREE); 6430 mSource.sendAccessibilityEventUnchecked(event); 6431 } else { 6432 mLastEventTimeMillis = 0; 6433 } 6434 // In any case reset to initial state. 6435 mSource.resetSubtreeAccessibilityStateChanged(); 6436 mSource = null; 6437 } 6438 6439 public void runOrPost(View source) { 6440 if (mSource != null) { 6441 // If there is no common predecessor, then mSource points to 6442 // a removed view, hence in this case always prefer the source. 6443 View predecessor = getCommonPredecessor(mSource, source); 6444 mSource = (predecessor != null) ? predecessor : source; 6445 return; 6446 } 6447 mSource = source; 6448 final long timeSinceLastMillis = SystemClock.uptimeMillis() - mLastEventTimeMillis; 6449 final long minEventIntevalMillis = 6450 ViewConfiguration.getSendRecurringAccessibilityEventsInterval(); 6451 if (timeSinceLastMillis >= minEventIntevalMillis) { 6452 mSource.removeCallbacks(this); 6453 run(); 6454 } else { 6455 mSource.postDelayed(this, minEventIntevalMillis - timeSinceLastMillis); 6456 } 6457 } 6458 } 6459} 6460