ViewRootImpl.java revision 70d4c5a0fe7f3411254df99b8e84b8e633d1fd05
1/* 2 * Copyright (C) 2006 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.view; 18 19import android.Manifest; 20import android.animation.LayoutTransition; 21import android.app.ActivityManagerNative; 22import android.content.ClipDescription; 23import android.content.ComponentCallbacks; 24import android.content.ComponentCallbacks2; 25import android.content.Context; 26import android.content.pm.PackageManager; 27import android.content.res.CompatibilityInfo; 28import android.content.res.Configuration; 29import android.content.res.Resources; 30import android.graphics.Canvas; 31import android.graphics.Paint; 32import android.graphics.PixelFormat; 33import android.graphics.Point; 34import android.graphics.PointF; 35import android.graphics.PorterDuff; 36import android.graphics.Rect; 37import android.graphics.Region; 38import android.graphics.drawable.Drawable; 39import android.media.AudioManager; 40import android.os.Binder; 41import android.os.Bundle; 42import android.os.Debug; 43import android.os.Handler; 44import android.os.Looper; 45import android.os.Message; 46import android.os.ParcelFileDescriptor; 47import android.os.PowerManager; 48import android.os.Process; 49import android.os.RemoteException; 50import android.os.SystemClock; 51import android.os.SystemProperties; 52import android.os.Trace; 53import android.util.AndroidRuntimeException; 54import android.util.DisplayMetrics; 55import android.util.Log; 56import android.util.Slog; 57import android.util.TypedValue; 58import android.view.View.AttachInfo; 59import android.view.View.MeasureSpec; 60import android.view.accessibility.AccessibilityEvent; 61import android.view.accessibility.AccessibilityManager; 62import android.view.accessibility.AccessibilityManager.AccessibilityStateChangeListener; 63import android.view.accessibility.AccessibilityNodeInfo; 64import android.view.accessibility.AccessibilityNodeProvider; 65import android.view.accessibility.IAccessibilityInteractionConnection; 66import android.view.accessibility.IAccessibilityInteractionConnectionCallback; 67import android.view.animation.AccelerateDecelerateInterpolator; 68import android.view.animation.Interpolator; 69import android.view.inputmethod.InputConnection; 70import android.view.inputmethod.InputMethodManager; 71import android.widget.Scroller; 72 73import com.android.internal.R; 74import com.android.internal.os.SomeArgs; 75import com.android.internal.policy.PolicyManager; 76import com.android.internal.view.BaseSurfaceHolder; 77import com.android.internal.view.RootViewSurfaceTaker; 78 79import java.io.IOException; 80import java.io.OutputStream; 81import java.lang.ref.WeakReference; 82import java.util.ArrayList; 83import java.util.HashSet; 84 85/** 86 * The top of a view hierarchy, implementing the needed protocol between View 87 * and the WindowManager. This is for the most part an internal implementation 88 * detail of {@link WindowManagerGlobal}. 89 * 90 * {@hide} 91 */ 92@SuppressWarnings({"EmptyCatchBlock", "PointlessBooleanExpression"}) 93public final class ViewRootImpl implements ViewParent, 94 View.AttachInfo.Callbacks, HardwareRenderer.HardwareDrawCallbacks { 95 private static final String TAG = "ViewRootImpl"; 96 private static final boolean DBG = false; 97 private static final boolean LOCAL_LOGV = false; 98 /** @noinspection PointlessBooleanExpression*/ 99 private static final boolean DEBUG_DRAW = false || LOCAL_LOGV; 100 private static final boolean DEBUG_LAYOUT = false || LOCAL_LOGV; 101 private static final boolean DEBUG_DIALOG = false || LOCAL_LOGV; 102 private static final boolean DEBUG_INPUT_RESIZE = false || LOCAL_LOGV; 103 private static final boolean DEBUG_ORIENTATION = false || LOCAL_LOGV; 104 private static final boolean DEBUG_TRACKBALL = false || LOCAL_LOGV; 105 private static final boolean DEBUG_IMF = false || LOCAL_LOGV; 106 private static final boolean DEBUG_CONFIGURATION = false || LOCAL_LOGV; 107 private static final boolean DEBUG_FPS = false; 108 private static final boolean DEBUG_INPUT_PROCESSING = false || LOCAL_LOGV; 109 110 /** 111 * Set this system property to true to force the view hierarchy to render 112 * at 60 Hz. This can be used to measure the potential framerate. 113 */ 114 private static final String PROPERTY_PROFILE_RENDERING = "viewroot.profile_rendering"; 115 private static final String PROPERTY_MEDIA_DISABLED = "config.disable_media"; 116 117 /** 118 * Maximum time we allow the user to roll the trackball enough to generate 119 * a key event, before resetting the counters. 120 */ 121 static final int MAX_TRACKBALL_DELAY = 250; 122 123 static final ThreadLocal<RunQueue> sRunQueues = new ThreadLocal<RunQueue>(); 124 125 static final ArrayList<Runnable> sFirstDrawHandlers = new ArrayList<Runnable>(); 126 static boolean sFirstDrawComplete = false; 127 128 static final ArrayList<ComponentCallbacks> sConfigCallbacks 129 = new ArrayList<ComponentCallbacks>(); 130 131 final Context mContext; 132 final IWindowSession mWindowSession; 133 final Display mDisplay; 134 final String mBasePackageName; 135 136 final int[] mTmpLocation = new int[2]; 137 138 final TypedValue mTmpValue = new TypedValue(); 139 140 final Thread mThread; 141 142 final WindowLeaked mLocation; 143 144 final WindowManager.LayoutParams mWindowAttributes = new WindowManager.LayoutParams(); 145 146 final W mWindow; 147 148 final int mTargetSdkVersion; 149 150 int mSeq; 151 152 View mView; 153 154 View mAccessibilityFocusedHost; 155 AccessibilityNodeInfo mAccessibilityFocusedVirtualView; 156 157 int mViewVisibility; 158 boolean mAppVisible = true; 159 int mOrigWindowType = -1; 160 161 // Set to true if the owner of this window is in the stopped state, 162 // so the window should no longer be active. 163 boolean mStopped = false; 164 165 boolean mLastInCompatMode = false; 166 167 SurfaceHolder.Callback2 mSurfaceHolderCallback; 168 BaseSurfaceHolder mSurfaceHolder; 169 boolean mIsCreating; 170 boolean mDrawingAllowed; 171 172 final Region mTransparentRegion; 173 final Region mPreviousTransparentRegion; 174 175 int mWidth; 176 int mHeight; 177 Rect mDirty; 178 final Rect mCurrentDirty = new Rect(); 179 boolean mIsAnimating; 180 181 CompatibilityInfo.Translator mTranslator; 182 183 final View.AttachInfo mAttachInfo; 184 InputChannel mInputChannel; 185 InputQueue.Callback mInputQueueCallback; 186 InputQueue mInputQueue; 187 FallbackEventHandler mFallbackEventHandler; 188 Choreographer mChoreographer; 189 190 final Rect mTempRect; // used in the transaction to not thrash the heap. 191 final Rect mVisRect; // used to retrieve visible rect of focused view. 192 193 boolean mTraversalScheduled; 194 int mTraversalBarrier; 195 boolean mWillDrawSoon; 196 /** Set to true while in performTraversals for detecting when die(true) is called from internal 197 * callbacks such as onMeasure, onPreDraw, onDraw and deferring doDie() until later. */ 198 boolean mIsInTraversal; 199 boolean mFitSystemWindowsRequested; 200 boolean mLayoutRequested; 201 boolean mFirst; 202 boolean mReportNextDraw; 203 boolean mFullRedrawNeeded; 204 boolean mNewSurfaceNeeded; 205 boolean mHasHadWindowFocus; 206 boolean mLastWasImTarget; 207 boolean mWindowsAnimating; 208 boolean mDrawDuringWindowsAnimating; 209 boolean mIsDrawing; 210 int mLastSystemUiVisibility; 211 int mClientWindowLayoutFlags; 212 boolean mLastOverscanRequested; 213 214 // Pool of queued input events. 215 private static final int MAX_QUEUED_INPUT_EVENT_POOL_SIZE = 10; 216 private QueuedInputEvent mQueuedInputEventPool; 217 private int mQueuedInputEventPoolSize; 218 219 /* Input event queue. 220 * Pending input events are input events waiting to be delivered to the input stages 221 * and handled by the application. 222 */ 223 QueuedInputEvent mPendingInputEventHead; 224 QueuedInputEvent mPendingInputEventTail; 225 int mPendingInputEventCount; 226 boolean mProcessInputEventsScheduled; 227 String mPendingInputEventQueueLengthCounterName = "pq"; 228 229 InputStage mFirstInputStage; 230 InputStage mFirstPostImeInputStage; 231 232 boolean mWindowAttributesChanged = false; 233 int mWindowAttributesChangesFlag = 0; 234 235 // These can be accessed by any thread, must be protected with a lock. 236 // Surface can never be reassigned or cleared (use Surface.clear()). 237 private final Surface mSurface = new Surface(); 238 239 boolean mAdded; 240 boolean mAddedTouchMode; 241 242 final CompatibilityInfoHolder mCompatibilityInfo; 243 244 // These are accessed by multiple threads. 245 final Rect mWinFrame; // frame given by window manager. 246 247 final Rect mPendingOverscanInsets = new Rect(); 248 final Rect mPendingVisibleInsets = new Rect(); 249 final Rect mPendingContentInsets = new Rect(); 250 final ViewTreeObserver.InternalInsetsInfo mLastGivenInsets 251 = new ViewTreeObserver.InternalInsetsInfo(); 252 253 final Rect mFitSystemWindowsInsets = new Rect(); 254 255 final Configuration mLastConfiguration = new Configuration(); 256 final Configuration mPendingConfiguration = new Configuration(); 257 258 boolean mScrollMayChange; 259 int mSoftInputMode; 260 WeakReference<View> mLastScrolledFocus; 261 int mScrollY; 262 int mCurScrollY; 263 Scroller mScroller; 264 HardwareLayer mResizeBuffer; 265 long mResizeBufferStartTime; 266 int mResizeBufferDuration; 267 static final Interpolator mResizeInterpolator = new AccelerateDecelerateInterpolator(); 268 private ArrayList<LayoutTransition> mPendingTransitions; 269 270 final ViewConfiguration mViewConfiguration; 271 272 /* Drag/drop */ 273 ClipDescription mDragDescription; 274 View mCurrentDragView; 275 volatile Object mLocalDragState; 276 final PointF mDragPoint = new PointF(); 277 final PointF mLastTouchPoint = new PointF(); 278 279 private boolean mProfileRendering; 280 private Choreographer.FrameCallback mRenderProfiler; 281 private boolean mRenderProfilingEnabled; 282 283 private boolean mMediaDisabled; 284 285 // Variables to track frames per second, enabled via DEBUG_FPS flag 286 private long mFpsStartTime = -1; 287 private long mFpsPrevTime = -1; 288 private int mFpsNumFrames; 289 290 private final ArrayList<DisplayList> mDisplayLists = new ArrayList<DisplayList>(); 291 292 /** 293 * see {@link #playSoundEffect(int)} 294 */ 295 AudioManager mAudioManager; 296 297 final AccessibilityManager mAccessibilityManager; 298 299 AccessibilityInteractionController mAccessibilityInteractionController; 300 301 AccessibilityInteractionConnectionManager mAccessibilityInteractionConnectionManager; 302 303 SendWindowContentChangedAccessibilityEvent mSendWindowContentChangedAccessibilityEvent; 304 305 HashSet<View> mTempHashSet; 306 307 private final int mDensity; 308 private final int mNoncompatDensity; 309 310 private boolean mInLayout = false; 311 ArrayList<View> mLayoutRequesters = new ArrayList<View>(); 312 boolean mHandlingLayoutInLayoutRequest = false; 313 314 private int mViewLayoutDirectionInitial; 315 316 /** 317 * Consistency verifier for debugging purposes. 318 */ 319 protected final InputEventConsistencyVerifier mInputEventConsistencyVerifier = 320 InputEventConsistencyVerifier.isInstrumentationEnabled() ? 321 new InputEventConsistencyVerifier(this, 0) : null; 322 323 static final class SystemUiVisibilityInfo { 324 int seq; 325 int globalVisibility; 326 int localValue; 327 int localChanges; 328 } 329 330 public ViewRootImpl(Context context, Display display) { 331 mContext = context; 332 mWindowSession = WindowManagerGlobal.getWindowSession(); 333 mDisplay = display; 334 mBasePackageName = context.getBasePackageName(); 335 336 CompatibilityInfoHolder cih = display.getCompatibilityInfo(); 337 mCompatibilityInfo = cih != null ? cih : new CompatibilityInfoHolder(); 338 339 mThread = Thread.currentThread(); 340 mLocation = new WindowLeaked(null); 341 mLocation.fillInStackTrace(); 342 mWidth = -1; 343 mHeight = -1; 344 mDirty = new Rect(); 345 mTempRect = new Rect(); 346 mVisRect = new Rect(); 347 mWinFrame = new Rect(); 348 mWindow = new W(this); 349 mTargetSdkVersion = context.getApplicationInfo().targetSdkVersion; 350 mViewVisibility = View.GONE; 351 mTransparentRegion = new Region(); 352 mPreviousTransparentRegion = new Region(); 353 mFirst = true; // true for the first time the view is added 354 mAdded = false; 355 mAccessibilityManager = AccessibilityManager.getInstance(context); 356 mAccessibilityInteractionConnectionManager = 357 new AccessibilityInteractionConnectionManager(); 358 mAccessibilityManager.addAccessibilityStateChangeListener( 359 mAccessibilityInteractionConnectionManager); 360 mAttachInfo = new View.AttachInfo(mWindowSession, mWindow, display, this, mHandler, this); 361 mViewConfiguration = ViewConfiguration.get(context); 362 mDensity = context.getResources().getDisplayMetrics().densityDpi; 363 mNoncompatDensity = context.getResources().getDisplayMetrics().noncompatDensityDpi; 364 mFallbackEventHandler = PolicyManager.makeNewFallbackEventHandler(context); 365 mChoreographer = Choreographer.getInstance(); 366 367 PowerManager powerManager = (PowerManager) context.getSystemService(Context.POWER_SERVICE); 368 mAttachInfo.mScreenOn = powerManager.isScreenOn(); 369 loadSystemProperties(); 370 } 371 372 public static void addFirstDrawHandler(Runnable callback) { 373 synchronized (sFirstDrawHandlers) { 374 if (!sFirstDrawComplete) { 375 sFirstDrawHandlers.add(callback); 376 } 377 } 378 } 379 380 public static void addConfigCallback(ComponentCallbacks callback) { 381 synchronized (sConfigCallbacks) { 382 sConfigCallbacks.add(callback); 383 } 384 } 385 386 // FIXME for perf testing only 387 private boolean mProfile = false; 388 389 /** 390 * Call this to profile the next traversal call. 391 * FIXME for perf testing only. Remove eventually 392 */ 393 public void profile() { 394 mProfile = true; 395 } 396 397 /** 398 * Indicates whether we are in touch mode. Calling this method triggers an IPC 399 * call and should be avoided whenever possible. 400 * 401 * @return True, if the device is in touch mode, false otherwise. 402 * 403 * @hide 404 */ 405 static boolean isInTouchMode() { 406 IWindowSession windowSession = WindowManagerGlobal.peekWindowSession(); 407 if (windowSession != null) { 408 try { 409 return windowSession.getInTouchMode(); 410 } catch (RemoteException e) { 411 } 412 } 413 return false; 414 } 415 416 /** 417 * We have one child 418 */ 419 public void setView(View view, WindowManager.LayoutParams attrs, View panelParentView) { 420 synchronized (this) { 421 if (mView == null) { 422 mView = view; 423 mViewLayoutDirectionInitial = mView.getRawLayoutDirection(); 424 mFallbackEventHandler.setView(view); 425 mWindowAttributes.copyFrom(attrs); 426 if (mWindowAttributes.packageName == null) { 427 mWindowAttributes.packageName = mBasePackageName; 428 } 429 attrs = mWindowAttributes; 430 // Keep track of the actual window flags supplied by the client. 431 mClientWindowLayoutFlags = attrs.flags; 432 433 setAccessibilityFocus(null, null); 434 435 if (view instanceof RootViewSurfaceTaker) { 436 mSurfaceHolderCallback = 437 ((RootViewSurfaceTaker)view).willYouTakeTheSurface(); 438 if (mSurfaceHolderCallback != null) { 439 mSurfaceHolder = new TakenSurfaceHolder(); 440 mSurfaceHolder.setFormat(PixelFormat.UNKNOWN); 441 } 442 } 443 444 CompatibilityInfo compatibilityInfo = mCompatibilityInfo.get(); 445 mTranslator = compatibilityInfo.getTranslator(); 446 447 // If the application owns the surface, don't enable hardware acceleration 448 if (mSurfaceHolder == null) { 449 enableHardwareAcceleration(attrs); 450 } 451 452 boolean restore = false; 453 if (mTranslator != null) { 454 mSurface.setCompatibilityTranslator(mTranslator); 455 restore = true; 456 attrs.backup(); 457 mTranslator.translateWindowLayout(attrs); 458 } 459 if (DEBUG_LAYOUT) Log.d(TAG, "WindowLayout in setView:" + attrs); 460 461 if (!compatibilityInfo.supportsScreen()) { 462 attrs.flags |= WindowManager.LayoutParams.FLAG_COMPATIBLE_WINDOW; 463 mLastInCompatMode = true; 464 } 465 466 mSoftInputMode = attrs.softInputMode; 467 mWindowAttributesChanged = true; 468 mWindowAttributesChangesFlag = WindowManager.LayoutParams.EVERYTHING_CHANGED; 469 mAttachInfo.mRootView = view; 470 mAttachInfo.mScalingRequired = mTranslator != null; 471 mAttachInfo.mApplicationScale = 472 mTranslator == null ? 1.0f : mTranslator.applicationScale; 473 if (panelParentView != null) { 474 mAttachInfo.mPanelParentWindowToken 475 = panelParentView.getApplicationWindowToken(); 476 } 477 mAdded = true; 478 int res; /* = WindowManagerImpl.ADD_OKAY; */ 479 480 // Schedule the first layout -before- adding to the window 481 // manager, to make sure we do the relayout before receiving 482 // any other events from the system. 483 requestLayout(); 484 if ((mWindowAttributes.inputFeatures 485 & WindowManager.LayoutParams.INPUT_FEATURE_NO_INPUT_CHANNEL) == 0) { 486 mInputChannel = new InputChannel(); 487 } 488 try { 489 mOrigWindowType = mWindowAttributes.type; 490 mAttachInfo.mRecomputeGlobalAttributes = true; 491 collectViewAttributes(); 492 res = mWindowSession.addToDisplay(mWindow, mSeq, mWindowAttributes, 493 getHostVisibility(), mDisplay.getDisplayId(), 494 mAttachInfo.mContentInsets, mInputChannel); 495 } catch (RemoteException e) { 496 mAdded = false; 497 mView = null; 498 mAttachInfo.mRootView = null; 499 mInputChannel = null; 500 mFallbackEventHandler.setView(null); 501 unscheduleTraversals(); 502 setAccessibilityFocus(null, null); 503 throw new RuntimeException("Adding window failed", e); 504 } finally { 505 if (restore) { 506 attrs.restore(); 507 } 508 } 509 510 if (mTranslator != null) { 511 mTranslator.translateRectInScreenToAppWindow(mAttachInfo.mContentInsets); 512 } 513 mPendingOverscanInsets.set(0, 0, 0, 0); 514 mPendingContentInsets.set(mAttachInfo.mContentInsets); 515 mPendingVisibleInsets.set(0, 0, 0, 0); 516 if (DEBUG_LAYOUT) Log.v(TAG, "Added window " + mWindow); 517 if (res < WindowManagerGlobal.ADD_OKAY) { 518 mAttachInfo.mRootView = null; 519 mAdded = false; 520 mFallbackEventHandler.setView(null); 521 unscheduleTraversals(); 522 setAccessibilityFocus(null, null); 523 switch (res) { 524 case WindowManagerGlobal.ADD_BAD_APP_TOKEN: 525 case WindowManagerGlobal.ADD_BAD_SUBWINDOW_TOKEN: 526 throw new WindowManager.BadTokenException( 527 "Unable to add window -- token " + attrs.token 528 + " is not valid; is your activity running?"); 529 case WindowManagerGlobal.ADD_NOT_APP_TOKEN: 530 throw new WindowManager.BadTokenException( 531 "Unable to add window -- token " + attrs.token 532 + " is not for an application"); 533 case WindowManagerGlobal.ADD_APP_EXITING: 534 throw new WindowManager.BadTokenException( 535 "Unable to add window -- app for token " + attrs.token 536 + " is exiting"); 537 case WindowManagerGlobal.ADD_DUPLICATE_ADD: 538 throw new WindowManager.BadTokenException( 539 "Unable to add window -- window " + mWindow 540 + " has already been added"); 541 case WindowManagerGlobal.ADD_STARTING_NOT_NEEDED: 542 // Silently ignore -- we would have just removed it 543 // right away, anyway. 544 return; 545 case WindowManagerGlobal.ADD_MULTIPLE_SINGLETON: 546 throw new WindowManager.BadTokenException( 547 "Unable to add window " + mWindow + 548 " -- another window of this type already exists"); 549 case WindowManagerGlobal.ADD_PERMISSION_DENIED: 550 throw new WindowManager.BadTokenException( 551 "Unable to add window " + mWindow + 552 " -- permission denied for this window type"); 553 case WindowManagerGlobal.ADD_INVALID_DISPLAY: 554 throw new WindowManager.InvalidDisplayException( 555 "Unable to add window " + mWindow + 556 " -- the specified display can not be found"); 557 } 558 throw new RuntimeException( 559 "Unable to add window -- unknown error code " + res); 560 } 561 562 if (view instanceof RootViewSurfaceTaker) { 563 mInputQueueCallback = 564 ((RootViewSurfaceTaker)view).willYouTakeTheInputQueue(); 565 } 566 if (mInputChannel != null) { 567 if (mInputQueueCallback != null) { 568 mInputQueue = new InputQueue(); 569 mInputQueueCallback.onInputQueueCreated(mInputQueue); 570 } 571 mInputEventReceiver = new WindowInputEventReceiver(mInputChannel, 572 Looper.myLooper()); 573 } 574 575 view.assignParent(this); 576 mAddedTouchMode = (res & WindowManagerGlobal.ADD_FLAG_IN_TOUCH_MODE) != 0; 577 mAppVisible = (res & WindowManagerGlobal.ADD_FLAG_APP_VISIBLE) != 0; 578 579 if (mAccessibilityManager.isEnabled()) { 580 mAccessibilityInteractionConnectionManager.ensureConnection(); 581 } 582 583 if (view.getImportantForAccessibility() == View.IMPORTANT_FOR_ACCESSIBILITY_AUTO) { 584 view.setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_YES); 585 } 586 587 // Set up the input pipeline. 588 CharSequence counterSuffix = attrs.getTitle(); 589 InputStage syntheticStage = new SyntheticInputStage(); 590 InputStage viewPostImeStage = new ViewPostImeInputStage(syntheticStage); 591 InputStage nativePostImeStage = new NativePostImeInputStage(viewPostImeStage, 592 "aq:native-post-ime:" + counterSuffix); 593 InputStage earlyPostImeStage = new EarlyPostImeInputStage(nativePostImeStage); 594 InputStage imeStage = new ImeInputStage(earlyPostImeStage, 595 "aq:ime:" + counterSuffix); 596 InputStage viewPreImeStage = new ViewPreImeInputStage(imeStage); 597 InputStage nativePreImeStage = new NativePreImeInputStage(viewPreImeStage, 598 "aq:native-pre-ime:" + counterSuffix); 599 600 mFirstInputStage = nativePreImeStage; 601 mFirstPostImeInputStage = earlyPostImeStage; 602 mPendingInputEventQueueLengthCounterName = "aq:pending:" + counterSuffix; 603 } 604 } 605 } 606 607 void destroyHardwareResources() { 608 if (mAttachInfo.mHardwareRenderer != null) { 609 if (mAttachInfo.mHardwareRenderer.isEnabled()) { 610 mAttachInfo.mHardwareRenderer.destroyLayers(mView); 611 } 612 mAttachInfo.mHardwareRenderer.destroy(false); 613 } 614 } 615 616 void terminateHardwareResources() { 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 if (mAttachInfo.mHardwareRenderer != null && 631 mAttachInfo.mHardwareRenderer.isEnabled()) { 632 mAttachInfo.mHardwareRenderer.destroyLayers(mView); 633 } 634 } 635 } 636 637 void pushHardwareLayerUpdate(HardwareLayer layer) { 638 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled()) { 639 mAttachInfo.mHardwareRenderer.pushLayerUpdate(layer); 640 } 641 } 642 643 void flushHardwareLayerUpdates() { 644 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled() && 645 mAttachInfo.mHardwareRenderer.validate()) { 646 mAttachInfo.mHardwareRenderer.flushLayerUpdates(); 647 } 648 } 649 650 void dispatchFlushHardwareLayerUpdates() { 651 mHandler.removeMessages(MSG_FLUSH_LAYER_UPDATES); 652 mHandler.sendMessageAtFrontOfQueue(mHandler.obtainMessage(MSG_FLUSH_LAYER_UPDATES)); 653 } 654 655 public boolean attachFunctor(int functor) { 656 //noinspection SimplifiableIfStatement 657 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled()) { 658 return mAttachInfo.mHardwareRenderer.attachFunctor(mAttachInfo, functor); 659 } 660 return false; 661 } 662 663 public void detachFunctor(int functor) { 664 if (mAttachInfo.mHardwareRenderer != null) { 665 mAttachInfo.mHardwareRenderer.detachFunctor(functor); 666 } 667 } 668 669 private void enableHardwareAcceleration(WindowManager.LayoutParams attrs) { 670 mAttachInfo.mHardwareAccelerated = false; 671 mAttachInfo.mHardwareAccelerationRequested = false; 672 673 // Don't enable hardware acceleration when the application is in compatibility mode 674 if (mTranslator != null) return; 675 676 // Try to enable hardware acceleration if requested 677 final boolean hardwareAccelerated = 678 (attrs.flags & WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED) != 0; 679 680 if (hardwareAccelerated) { 681 if (!HardwareRenderer.isAvailable()) { 682 return; 683 } 684 685 // Persistent processes (including the system) should not do 686 // accelerated rendering on low-end devices. In that case, 687 // sRendererDisabled will be set. In addition, the system process 688 // itself should never do accelerated rendering. In that case, both 689 // sRendererDisabled and sSystemRendererDisabled are set. When 690 // sSystemRendererDisabled is set, PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED 691 // can be used by code on the system process to escape that and enable 692 // HW accelerated drawing. (This is basically for the lock screen.) 693 694 final boolean fakeHwAccelerated = (attrs.privateFlags & 695 WindowManager.LayoutParams.PRIVATE_FLAG_FAKE_HARDWARE_ACCELERATED) != 0; 696 final boolean forceHwAccelerated = (attrs.privateFlags & 697 WindowManager.LayoutParams.PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED) != 0; 698 699 if (!HardwareRenderer.sRendererDisabled || (HardwareRenderer.sSystemRendererDisabled 700 && forceHwAccelerated)) { 701 // Don't enable hardware acceleration when we're not on the main thread 702 if (!HardwareRenderer.sSystemRendererDisabled && 703 Looper.getMainLooper() != Looper.myLooper()) { 704 Log.w(HardwareRenderer.LOG_TAG, "Attempting to initialize hardware " 705 + "acceleration outside of the main thread, aborting"); 706 return; 707 } 708 709 if (mAttachInfo.mHardwareRenderer != null) { 710 mAttachInfo.mHardwareRenderer.destroy(true); 711 } 712 713 final boolean translucent = attrs.format != PixelFormat.OPAQUE; 714 mAttachInfo.mHardwareRenderer = HardwareRenderer.createGlRenderer(2, translucent); 715 if (mAttachInfo.mHardwareRenderer != null) { 716 mAttachInfo.mHardwareRenderer.setName(attrs.getTitle().toString()); 717 mAttachInfo.mHardwareAccelerated = 718 mAttachInfo.mHardwareAccelerationRequested = true; 719 } 720 } else if (fakeHwAccelerated) { 721 // The window had wanted to use hardware acceleration, but this 722 // is not allowed in its process. By setting this flag, it can 723 // still render as if it was accelerated. This is basically for 724 // the preview windows the window manager shows for launching 725 // applications, so they will look more like the app being launched. 726 mAttachInfo.mHardwareAccelerationRequested = true; 727 } 728 } 729 } 730 731 public View getView() { 732 return mView; 733 } 734 735 final WindowLeaked getLocation() { 736 return mLocation; 737 } 738 739 void setLayoutParams(WindowManager.LayoutParams attrs, boolean newView) { 740 synchronized (this) { 741 int oldSoftInputMode = mWindowAttributes.softInputMode; 742 // Keep track of the actual window flags supplied by the client. 743 mClientWindowLayoutFlags = attrs.flags; 744 // preserve compatible window flag if exists. 745 int compatibleWindowFlag = 746 mWindowAttributes.flags & WindowManager.LayoutParams.FLAG_COMPATIBLE_WINDOW; 747 // transfer over system UI visibility values as they carry current state. 748 attrs.systemUiVisibility = mWindowAttributes.systemUiVisibility; 749 attrs.subtreeSystemUiVisibility = mWindowAttributes.subtreeSystemUiVisibility; 750 mWindowAttributesChangesFlag = mWindowAttributes.copyFrom(attrs); 751 if (mWindowAttributes.packageName == null) { 752 mWindowAttributes.packageName = mBasePackageName; 753 } 754 mWindowAttributes.flags |= compatibleWindowFlag; 755 756 applyKeepScreenOnFlag(mWindowAttributes); 757 758 if (newView) { 759 mSoftInputMode = attrs.softInputMode; 760 requestLayout(); 761 } 762 // Don't lose the mode we last auto-computed. 763 if ((attrs.softInputMode&WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 764 == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 765 mWindowAttributes.softInputMode = (mWindowAttributes.softInputMode 766 & ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 767 | (oldSoftInputMode 768 & WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST); 769 } 770 mWindowAttributesChanged = true; 771 scheduleTraversals(); 772 } 773 } 774 775 void handleAppVisibility(boolean visible) { 776 if (mAppVisible != visible) { 777 mAppVisible = visible; 778 scheduleTraversals(); 779 } 780 } 781 782 void handleGetNewSurface() { 783 mNewSurfaceNeeded = true; 784 mFullRedrawNeeded = true; 785 scheduleTraversals(); 786 } 787 788 void handleScreenStateChange(boolean on) { 789 if (on != mAttachInfo.mScreenOn) { 790 mAttachInfo.mScreenOn = on; 791 if (mView != null) { 792 mView.dispatchScreenStateChanged(on ? View.SCREEN_STATE_ON : View.SCREEN_STATE_OFF); 793 } 794 if (on) { 795 mFullRedrawNeeded = true; 796 scheduleTraversals(); 797 } 798 } 799 } 800 801 @Override 802 public void requestFitSystemWindows() { 803 checkThread(); 804 mFitSystemWindowsRequested = true; 805 scheduleTraversals(); 806 } 807 808 @Override 809 public void requestLayout() { 810 if (!mHandlingLayoutInLayoutRequest) { 811 checkThread(); 812 mLayoutRequested = true; 813 scheduleTraversals(); 814 } 815 } 816 817 @Override 818 public boolean isLayoutRequested() { 819 return mLayoutRequested; 820 } 821 822 void invalidate() { 823 mDirty.set(0, 0, mWidth, mHeight); 824 scheduleTraversals(); 825 } 826 827 void invalidateWorld(View view) { 828 view.invalidate(); 829 if (view instanceof ViewGroup) { 830 ViewGroup parent = (ViewGroup) view; 831 for (int i = 0; i < parent.getChildCount(); i++) { 832 invalidateWorld(parent.getChildAt(i)); 833 } 834 } 835 } 836 837 @Override 838 public void invalidateChild(View child, Rect dirty) { 839 invalidateChildInParent(null, dirty); 840 } 841 842 public ViewParent invalidateChildInParent(int[] location, Rect dirty) { 843 checkThread(); 844 if (DEBUG_DRAW) Log.v(TAG, "Invalidate child: " + dirty); 845 846 if (dirty == null) { 847 invalidate(); 848 return null; 849 } else if (dirty.isEmpty() && !mIsAnimating) { 850 return null; 851 } 852 853 if (mCurScrollY != 0 || mTranslator != null) { 854 mTempRect.set(dirty); 855 dirty = mTempRect; 856 if (mCurScrollY != 0) { 857 dirty.offset(0, -mCurScrollY); 858 } 859 if (mTranslator != null) { 860 mTranslator.translateRectInAppWindowToScreen(dirty); 861 } 862 if (mAttachInfo.mScalingRequired) { 863 dirty.inset(-1, -1); 864 } 865 } 866 867 final Rect localDirty = mDirty; 868 if (!localDirty.isEmpty() && !localDirty.contains(dirty)) { 869 mAttachInfo.mSetIgnoreDirtyState = true; 870 mAttachInfo.mIgnoreDirtyState = true; 871 } 872 873 // Add the new dirty rect to the current one 874 localDirty.union(dirty.left, dirty.top, dirty.right, dirty.bottom); 875 // Intersect with the bounds of the window to skip 876 // updates that lie outside of the visible region 877 final float appScale = mAttachInfo.mApplicationScale; 878 final boolean intersected = localDirty.intersect(0, 0, 879 (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 880 if (!intersected) { 881 localDirty.setEmpty(); 882 } 883 if (!mWillDrawSoon && (intersected || mIsAnimating)) { 884 scheduleTraversals(); 885 } 886 887 return null; 888 } 889 890 void setStopped(boolean stopped) { 891 if (mStopped != stopped) { 892 mStopped = stopped; 893 if (!stopped) { 894 scheduleTraversals(); 895 } 896 } 897 } 898 899 public ViewParent getParent() { 900 return null; 901 } 902 903 public boolean getChildVisibleRect(View child, Rect r, android.graphics.Point offset) { 904 if (child != mView) { 905 throw new RuntimeException("child is not mine, honest!"); 906 } 907 // Note: don't apply scroll offset, because we want to know its 908 // visibility in the virtual canvas being given to the view hierarchy. 909 return r.intersect(0, 0, mWidth, mHeight); 910 } 911 912 public void bringChildToFront(View child) { 913 } 914 915 int getHostVisibility() { 916 return mAppVisible ? mView.getVisibility() : View.GONE; 917 } 918 919 void disposeResizeBuffer() { 920 if (mResizeBuffer != null) { 921 mResizeBuffer.destroy(); 922 mResizeBuffer = null; 923 } 924 } 925 926 /** 927 * Add LayoutTransition to the list of transitions to be started in the next traversal. 928 * This list will be cleared after the transitions on the list are start()'ed. These 929 * transitionsa re added by LayoutTransition itself when it sets up animations. The setup 930 * happens during the layout phase of traversal, which we want to complete before any of the 931 * animations are started (because those animations may side-effect properties that layout 932 * depends upon, like the bounding rectangles of the affected views). So we add the transition 933 * to the list and it is started just prior to starting the drawing phase of traversal. 934 * 935 * @param transition The LayoutTransition to be started on the next traversal. 936 * 937 * @hide 938 */ 939 public void requestTransitionStart(LayoutTransition transition) { 940 if (mPendingTransitions == null || !mPendingTransitions.contains(transition)) { 941 if (mPendingTransitions == null) { 942 mPendingTransitions = new ArrayList<LayoutTransition>(); 943 } 944 mPendingTransitions.add(transition); 945 } 946 } 947 948 void scheduleTraversals() { 949 if (!mTraversalScheduled) { 950 mTraversalScheduled = true; 951 mTraversalBarrier = mHandler.getLooper().postSyncBarrier(); 952 mChoreographer.postCallback( 953 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 954 scheduleConsumeBatchedInput(); 955 } 956 } 957 958 void unscheduleTraversals() { 959 if (mTraversalScheduled) { 960 mTraversalScheduled = false; 961 mHandler.getLooper().removeSyncBarrier(mTraversalBarrier); 962 mChoreographer.removeCallbacks( 963 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 964 } 965 } 966 967 void doTraversal() { 968 if (mTraversalScheduled) { 969 mTraversalScheduled = false; 970 mHandler.getLooper().removeSyncBarrier(mTraversalBarrier); 971 972 if (mProfile) { 973 Debug.startMethodTracing("ViewAncestor"); 974 } 975 976 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "performTraversals"); 977 try { 978 performTraversals(); 979 } finally { 980 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 981 } 982 983 if (mProfile) { 984 Debug.stopMethodTracing(); 985 mProfile = false; 986 } 987 } 988 } 989 990 private void applyKeepScreenOnFlag(WindowManager.LayoutParams params) { 991 // Update window's global keep screen on flag: if a view has requested 992 // that the screen be kept on, then it is always set; otherwise, it is 993 // set to whatever the client last requested for the global state. 994 if (mAttachInfo.mKeepScreenOn) { 995 params.flags |= WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON; 996 } else { 997 params.flags = (params.flags&~WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON) 998 | (mClientWindowLayoutFlags&WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 999 } 1000 } 1001 1002 private boolean collectViewAttributes() { 1003 final View.AttachInfo attachInfo = mAttachInfo; 1004 if (attachInfo.mRecomputeGlobalAttributes) { 1005 //Log.i(TAG, "Computing view hierarchy attributes!"); 1006 attachInfo.mRecomputeGlobalAttributes = false; 1007 boolean oldScreenOn = attachInfo.mKeepScreenOn; 1008 attachInfo.mKeepScreenOn = false; 1009 attachInfo.mSystemUiVisibility = 0; 1010 attachInfo.mHasSystemUiListeners = false; 1011 mView.dispatchCollectViewAttributes(attachInfo, 0); 1012 attachInfo.mSystemUiVisibility &= ~attachInfo.mDisabledSystemUiVisibility; 1013 WindowManager.LayoutParams params = mWindowAttributes; 1014 if (attachInfo.mKeepScreenOn != oldScreenOn 1015 || attachInfo.mSystemUiVisibility != params.subtreeSystemUiVisibility 1016 || attachInfo.mHasSystemUiListeners != params.hasSystemUiListeners) { 1017 applyKeepScreenOnFlag(params); 1018 params.subtreeSystemUiVisibility = attachInfo.mSystemUiVisibility; 1019 params.hasSystemUiListeners = attachInfo.mHasSystemUiListeners; 1020 mView.dispatchWindowSystemUiVisiblityChanged(attachInfo.mSystemUiVisibility); 1021 return true; 1022 } 1023 } 1024 return false; 1025 } 1026 1027 private boolean measureHierarchy(final View host, final WindowManager.LayoutParams lp, 1028 final Resources res, final int desiredWindowWidth, final int desiredWindowHeight) { 1029 int childWidthMeasureSpec; 1030 int childHeightMeasureSpec; 1031 boolean windowSizeMayChange = false; 1032 1033 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) Log.v(TAG, 1034 "Measuring " + host + " in display " + desiredWindowWidth 1035 + "x" + desiredWindowHeight + "..."); 1036 1037 boolean goodMeasure = false; 1038 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT) { 1039 // On large screens, we don't want to allow dialogs to just 1040 // stretch to fill the entire width of the screen to display 1041 // one line of text. First try doing the layout at a smaller 1042 // size to see if it will fit. 1043 final DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1044 res.getValue(com.android.internal.R.dimen.config_prefDialogWidth, mTmpValue, true); 1045 int baseSize = 0; 1046 if (mTmpValue.type == TypedValue.TYPE_DIMENSION) { 1047 baseSize = (int)mTmpValue.getDimension(packageMetrics); 1048 } 1049 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": baseSize=" + baseSize); 1050 if (baseSize != 0 && desiredWindowWidth > baseSize) { 1051 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1052 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1053 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1054 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": measured (" 1055 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1056 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1057 goodMeasure = true; 1058 } else { 1059 // Didn't fit in that size... try expanding a bit. 1060 baseSize = (baseSize+desiredWindowWidth)/2; 1061 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": next baseSize=" 1062 + baseSize); 1063 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1064 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1065 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": measured (" 1066 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1067 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1068 if (DEBUG_DIALOG) Log.v(TAG, "Good!"); 1069 goodMeasure = true; 1070 } 1071 } 1072 } 1073 } 1074 1075 if (!goodMeasure) { 1076 childWidthMeasureSpec = getRootMeasureSpec(desiredWindowWidth, lp.width); 1077 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1078 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1079 if (mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) { 1080 windowSizeMayChange = true; 1081 } 1082 } 1083 1084 if (DBG) { 1085 System.out.println("======================================"); 1086 System.out.println("performTraversals -- after measure"); 1087 host.debug(); 1088 } 1089 1090 return windowSizeMayChange; 1091 } 1092 1093 private void performTraversals() { 1094 // cache mView since it is used so much below... 1095 final View host = mView; 1096 1097 if (DBG) { 1098 System.out.println("======================================"); 1099 System.out.println("performTraversals"); 1100 host.debug(); 1101 } 1102 1103 if (host == null || !mAdded) 1104 return; 1105 1106 mIsInTraversal = true; 1107 mWillDrawSoon = true; 1108 boolean windowSizeMayChange = false; 1109 boolean newSurface = false; 1110 boolean surfaceChanged = false; 1111 WindowManager.LayoutParams lp = mWindowAttributes; 1112 1113 int desiredWindowWidth; 1114 int desiredWindowHeight; 1115 1116 final View.AttachInfo attachInfo = mAttachInfo; 1117 1118 final int viewVisibility = getHostVisibility(); 1119 boolean viewVisibilityChanged = mViewVisibility != viewVisibility 1120 || mNewSurfaceNeeded; 1121 1122 WindowManager.LayoutParams params = null; 1123 if (mWindowAttributesChanged) { 1124 mWindowAttributesChanged = false; 1125 surfaceChanged = true; 1126 params = lp; 1127 } 1128 CompatibilityInfo compatibilityInfo = mCompatibilityInfo.get(); 1129 if (compatibilityInfo.supportsScreen() == mLastInCompatMode) { 1130 params = lp; 1131 mFullRedrawNeeded = true; 1132 mLayoutRequested = true; 1133 if (mLastInCompatMode) { 1134 params.flags &= ~WindowManager.LayoutParams.FLAG_COMPATIBLE_WINDOW; 1135 mLastInCompatMode = false; 1136 } else { 1137 params.flags |= WindowManager.LayoutParams.FLAG_COMPATIBLE_WINDOW; 1138 mLastInCompatMode = true; 1139 } 1140 } 1141 1142 mWindowAttributesChangesFlag = 0; 1143 1144 Rect frame = mWinFrame; 1145 if (mFirst) { 1146 mFullRedrawNeeded = true; 1147 mLayoutRequested = true; 1148 1149 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL) { 1150 // NOTE -- system code, won't try to do compat mode. 1151 Point size = new Point(); 1152 mDisplay.getRealSize(size); 1153 desiredWindowWidth = size.x; 1154 desiredWindowHeight = size.y; 1155 } else { 1156 DisplayMetrics packageMetrics = 1157 mView.getContext().getResources().getDisplayMetrics(); 1158 desiredWindowWidth = packageMetrics.widthPixels; 1159 desiredWindowHeight = packageMetrics.heightPixels; 1160 } 1161 1162 // For the very first time, tell the view hierarchy that it 1163 // is attached to the window. Note that at this point the surface 1164 // object is not initialized to its backing store, but soon it 1165 // will be (assuming the window is visible). 1166 attachInfo.mSurface = mSurface; 1167 // We used to use the following condition to choose 32 bits drawing caches: 1168 // PixelFormat.hasAlpha(lp.format) || lp.format == PixelFormat.RGBX_8888 1169 // However, windows are now always 32 bits by default, so choose 32 bits 1170 attachInfo.mUse32BitDrawingCache = true; 1171 attachInfo.mHasWindowFocus = false; 1172 attachInfo.mWindowVisibility = viewVisibility; 1173 attachInfo.mRecomputeGlobalAttributes = false; 1174 viewVisibilityChanged = false; 1175 mLastConfiguration.setTo(host.getResources().getConfiguration()); 1176 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1177 // Set the layout direction if it has not been set before (inherit is the default) 1178 if (mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 1179 host.setLayoutDirection(mLastConfiguration.getLayoutDirection()); 1180 } 1181 host.dispatchAttachedToWindow(attachInfo, 0); 1182 attachInfo.mTreeObserver.dispatchOnWindowAttachedChange(true); 1183 mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets); 1184 host.fitSystemWindows(mFitSystemWindowsInsets); 1185 //Log.i(TAG, "Screen on initialized: " + attachInfo.mKeepScreenOn); 1186 1187 } else { 1188 desiredWindowWidth = frame.width(); 1189 desiredWindowHeight = frame.height(); 1190 if (desiredWindowWidth != mWidth || desiredWindowHeight != mHeight) { 1191 if (DEBUG_ORIENTATION) Log.v(TAG, 1192 "View " + host + " resized to: " + frame); 1193 mFullRedrawNeeded = true; 1194 mLayoutRequested = true; 1195 windowSizeMayChange = true; 1196 } 1197 } 1198 1199 if (viewVisibilityChanged) { 1200 attachInfo.mWindowVisibility = viewVisibility; 1201 host.dispatchWindowVisibilityChanged(viewVisibility); 1202 if (viewVisibility != View.VISIBLE || mNewSurfaceNeeded) { 1203 destroyHardwareResources(); 1204 } 1205 if (viewVisibility == View.GONE) { 1206 // After making a window gone, we will count it as being 1207 // shown for the first time the next time it gets focus. 1208 mHasHadWindowFocus = false; 1209 } 1210 } 1211 1212 // Execute enqueued actions on every traversal in case a detached view enqueued an action 1213 getRunQueue().executeActions(attachInfo.mHandler); 1214 1215 boolean insetsChanged = false; 1216 1217 boolean layoutRequested = mLayoutRequested && !mStopped; 1218 if (layoutRequested) { 1219 1220 final Resources res = mView.getContext().getResources(); 1221 1222 if (mFirst) { 1223 // make sure touch mode code executes by setting cached value 1224 // to opposite of the added touch mode. 1225 mAttachInfo.mInTouchMode = !mAddedTouchMode; 1226 ensureTouchModeLocally(mAddedTouchMode); 1227 } else { 1228 if (!mPendingOverscanInsets.equals(mAttachInfo.mOverscanInsets)) { 1229 insetsChanged = true; 1230 } 1231 if (!mPendingContentInsets.equals(mAttachInfo.mContentInsets)) { 1232 insetsChanged = true; 1233 } 1234 if (!mPendingVisibleInsets.equals(mAttachInfo.mVisibleInsets)) { 1235 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1236 if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: " 1237 + mAttachInfo.mVisibleInsets); 1238 } 1239 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT 1240 || lp.height == ViewGroup.LayoutParams.WRAP_CONTENT) { 1241 windowSizeMayChange = true; 1242 1243 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL) { 1244 // NOTE -- system code, won't try to do compat mode. 1245 Point size = new Point(); 1246 mDisplay.getRealSize(size); 1247 desiredWindowWidth = size.x; 1248 desiredWindowHeight = size.y; 1249 } else { 1250 DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1251 desiredWindowWidth = packageMetrics.widthPixels; 1252 desiredWindowHeight = packageMetrics.heightPixels; 1253 } 1254 } 1255 } 1256 1257 // Ask host how big it wants to be 1258 windowSizeMayChange |= measureHierarchy(host, lp, res, 1259 desiredWindowWidth, desiredWindowHeight); 1260 } 1261 1262 if (collectViewAttributes()) { 1263 params = lp; 1264 } 1265 if (attachInfo.mForceReportNewAttributes) { 1266 attachInfo.mForceReportNewAttributes = false; 1267 params = lp; 1268 } 1269 1270 if (mFirst || attachInfo.mViewVisibilityChanged) { 1271 attachInfo.mViewVisibilityChanged = false; 1272 int resizeMode = mSoftInputMode & 1273 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST; 1274 // If we are in auto resize mode, then we need to determine 1275 // what mode to use now. 1276 if (resizeMode == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 1277 final int N = attachInfo.mScrollContainers.size(); 1278 for (int i=0; i<N; i++) { 1279 if (attachInfo.mScrollContainers.get(i).isShown()) { 1280 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE; 1281 } 1282 } 1283 if (resizeMode == 0) { 1284 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_PAN; 1285 } 1286 if ((lp.softInputMode & 1287 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) != resizeMode) { 1288 lp.softInputMode = (lp.softInputMode & 1289 ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) | 1290 resizeMode; 1291 params = lp; 1292 } 1293 } 1294 } 1295 1296 if (params != null) { 1297 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 1298 if (!PixelFormat.formatHasAlpha(params.format)) { 1299 params.format = PixelFormat.TRANSLUCENT; 1300 } 1301 } 1302 mAttachInfo.mOverscanRequested = (params.flags 1303 & WindowManager.LayoutParams.FLAG_LAYOUT_IN_OVERSCAN) != 0; 1304 } 1305 1306 if (mFitSystemWindowsRequested) { 1307 mFitSystemWindowsRequested = false; 1308 mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets); 1309 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1310 host.fitSystemWindows(mFitSystemWindowsInsets); 1311 if (mLayoutRequested) { 1312 // Short-circuit catching a new layout request here, so 1313 // we don't need to go through two layout passes when things 1314 // change due to fitting system windows, which can happen a lot. 1315 windowSizeMayChange |= measureHierarchy(host, lp, 1316 mView.getContext().getResources(), 1317 desiredWindowWidth, desiredWindowHeight); 1318 } 1319 } 1320 1321 if (layoutRequested) { 1322 // Clear this now, so that if anything requests a layout in the 1323 // rest of this function we will catch it and re-run a full 1324 // layout pass. 1325 mLayoutRequested = false; 1326 } 1327 1328 boolean windowShouldResize = layoutRequested && windowSizeMayChange 1329 && ((mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) 1330 || (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT && 1331 frame.width() < desiredWindowWidth && frame.width() != mWidth) 1332 || (lp.height == ViewGroup.LayoutParams.WRAP_CONTENT && 1333 frame.height() < desiredWindowHeight && frame.height() != mHeight)); 1334 1335 final boolean computesInternalInsets = 1336 attachInfo.mTreeObserver.hasComputeInternalInsetsListeners(); 1337 1338 boolean insetsPending = false; 1339 int relayoutResult = 0; 1340 1341 if (mFirst || windowShouldResize || insetsChanged || 1342 viewVisibilityChanged || params != null) { 1343 1344 if (viewVisibility == View.VISIBLE) { 1345 // If this window is giving internal insets to the window 1346 // manager, and it is being added or changing its visibility, 1347 // then we want to first give the window manager "fake" 1348 // insets to cause it to effectively ignore the content of 1349 // the window during layout. This avoids it briefly causing 1350 // other windows to resize/move based on the raw frame of the 1351 // window, waiting until we can finish laying out this window 1352 // and get back to the window manager with the ultimately 1353 // computed insets. 1354 insetsPending = computesInternalInsets && (mFirst || viewVisibilityChanged); 1355 } 1356 1357 if (mSurfaceHolder != null) { 1358 mSurfaceHolder.mSurfaceLock.lock(); 1359 mDrawingAllowed = true; 1360 } 1361 1362 boolean hwInitialized = false; 1363 boolean contentInsetsChanged = false; 1364 boolean hadSurface = mSurface.isValid(); 1365 1366 try { 1367 if (DEBUG_LAYOUT) { 1368 Log.i(TAG, "host=w:" + host.getMeasuredWidth() + ", h:" + 1369 host.getMeasuredHeight() + ", params=" + params); 1370 } 1371 1372 final int surfaceGenerationId = mSurface.getGenerationId(); 1373 relayoutResult = relayoutWindow(params, viewVisibility, insetsPending); 1374 if (!mDrawDuringWindowsAnimating) { 1375 mWindowsAnimating |= 1376 (relayoutResult & WindowManagerGlobal.RELAYOUT_RES_ANIMATING) != 0; 1377 } 1378 1379 if (DEBUG_LAYOUT) Log.v(TAG, "relayout: frame=" + frame.toShortString() 1380 + " overscan=" + mPendingOverscanInsets.toShortString() 1381 + " content=" + mPendingContentInsets.toShortString() 1382 + " visible=" + mPendingVisibleInsets.toShortString() 1383 + " surface=" + mSurface); 1384 1385 if (mPendingConfiguration.seq != 0) { 1386 if (DEBUG_CONFIGURATION) Log.v(TAG, "Visible with new config: " 1387 + mPendingConfiguration); 1388 updateConfiguration(mPendingConfiguration, !mFirst); 1389 mPendingConfiguration.seq = 0; 1390 } 1391 1392 final boolean overscanInsetsChanged = !mPendingOverscanInsets.equals( 1393 mAttachInfo.mOverscanInsets); 1394 contentInsetsChanged = !mPendingContentInsets.equals( 1395 mAttachInfo.mContentInsets); 1396 final boolean visibleInsetsChanged = !mPendingVisibleInsets.equals( 1397 mAttachInfo.mVisibleInsets); 1398 if (contentInsetsChanged) { 1399 if (mWidth > 0 && mHeight > 0 && lp != null && 1400 ((lp.systemUiVisibility|lp.subtreeSystemUiVisibility) 1401 & View.SYSTEM_UI_LAYOUT_FLAGS) == 0 && 1402 mSurface != null && mSurface.isValid() && 1403 !mAttachInfo.mTurnOffWindowResizeAnim && 1404 mAttachInfo.mHardwareRenderer != null && 1405 mAttachInfo.mHardwareRenderer.isEnabled() && 1406 mAttachInfo.mHardwareRenderer.validate() && 1407 lp != null && !PixelFormat.formatHasAlpha(lp.format)) { 1408 1409 disposeResizeBuffer(); 1410 1411 boolean completed = false; 1412 HardwareCanvas hwRendererCanvas = mAttachInfo.mHardwareRenderer.getCanvas(); 1413 HardwareCanvas layerCanvas = null; 1414 try { 1415 if (mResizeBuffer == null) { 1416 mResizeBuffer = mAttachInfo.mHardwareRenderer.createHardwareLayer( 1417 mWidth, mHeight, false); 1418 } else if (mResizeBuffer.getWidth() != mWidth || 1419 mResizeBuffer.getHeight() != mHeight) { 1420 mResizeBuffer.resize(mWidth, mHeight); 1421 } 1422 // TODO: should handle create/resize failure 1423 layerCanvas = mResizeBuffer.start(hwRendererCanvas); 1424 final int restoreCount = layerCanvas.save(); 1425 1426 int yoff; 1427 final boolean scrolling = mScroller != null 1428 && mScroller.computeScrollOffset(); 1429 if (scrolling) { 1430 yoff = mScroller.getCurrY(); 1431 mScroller.abortAnimation(); 1432 } else { 1433 yoff = mScrollY; 1434 } 1435 1436 layerCanvas.translate(0, -yoff); 1437 if (mTranslator != null) { 1438 mTranslator.translateCanvas(layerCanvas); 1439 } 1440 1441 DisplayList displayList = mView.mDisplayList; 1442 if (displayList != null) { 1443 layerCanvas.drawDisplayList(displayList, null, 1444 DisplayList.FLAG_CLIP_CHILDREN); 1445 } else { 1446 mView.draw(layerCanvas); 1447 } 1448 1449 drawAccessibilityFocusedDrawableIfNeeded(layerCanvas); 1450 1451 mResizeBufferStartTime = SystemClock.uptimeMillis(); 1452 mResizeBufferDuration = mView.getResources().getInteger( 1453 com.android.internal.R.integer.config_mediumAnimTime); 1454 completed = true; 1455 1456 layerCanvas.restoreToCount(restoreCount); 1457 } catch (OutOfMemoryError e) { 1458 Log.w(TAG, "Not enough memory for content change anim buffer", e); 1459 } finally { 1460 if (mResizeBuffer != null) { 1461 mResizeBuffer.end(hwRendererCanvas); 1462 if (!completed) { 1463 mResizeBuffer.destroy(); 1464 mResizeBuffer = null; 1465 } 1466 } 1467 } 1468 } 1469 mAttachInfo.mContentInsets.set(mPendingContentInsets); 1470 if (DEBUG_LAYOUT) Log.v(TAG, "Content insets changing to: " 1471 + mAttachInfo.mContentInsets); 1472 } 1473 if (overscanInsetsChanged) { 1474 mAttachInfo.mOverscanInsets.set(mPendingOverscanInsets); 1475 if (DEBUG_LAYOUT) Log.v(TAG, "Overscan insets changing to: " 1476 + mAttachInfo.mOverscanInsets); 1477 // Need to relayout with content insets. 1478 contentInsetsChanged = true; 1479 } 1480 if (contentInsetsChanged || mLastSystemUiVisibility != 1481 mAttachInfo.mSystemUiVisibility || mFitSystemWindowsRequested 1482 || mLastOverscanRequested != mAttachInfo.mOverscanRequested) { 1483 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1484 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1485 mFitSystemWindowsRequested = false; 1486 mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets); 1487 host.fitSystemWindows(mFitSystemWindowsInsets); 1488 } 1489 if (visibleInsetsChanged) { 1490 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1491 if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: " 1492 + mAttachInfo.mVisibleInsets); 1493 } 1494 1495 if (!hadSurface) { 1496 if (mSurface.isValid()) { 1497 // If we are creating a new surface, then we need to 1498 // completely redraw it. Also, when we get to the 1499 // point of drawing it we will hold off and schedule 1500 // a new traversal instead. This is so we can tell the 1501 // window manager about all of the windows being displayed 1502 // before actually drawing them, so it can display then 1503 // all at once. 1504 newSurface = true; 1505 mFullRedrawNeeded = true; 1506 mPreviousTransparentRegion.setEmpty(); 1507 1508 if (mAttachInfo.mHardwareRenderer != null) { 1509 try { 1510 hwInitialized = mAttachInfo.mHardwareRenderer.initialize( 1511 mHolder.getSurface()); 1512 } catch (Surface.OutOfResourcesException e) { 1513 handleOutOfResourcesException(e); 1514 return; 1515 } 1516 } 1517 } 1518 } else if (!mSurface.isValid()) { 1519 // If the surface has been removed, then reset the scroll 1520 // positions. 1521 if (mLastScrolledFocus != null) { 1522 mLastScrolledFocus.clear(); 1523 } 1524 mScrollY = mCurScrollY = 0; 1525 if (mScroller != null) { 1526 mScroller.abortAnimation(); 1527 } 1528 disposeResizeBuffer(); 1529 // Our surface is gone 1530 if (mAttachInfo.mHardwareRenderer != null && 1531 mAttachInfo.mHardwareRenderer.isEnabled()) { 1532 mAttachInfo.mHardwareRenderer.destroy(true); 1533 } 1534 } else if (surfaceGenerationId != mSurface.getGenerationId() && 1535 mSurfaceHolder == null && mAttachInfo.mHardwareRenderer != null) { 1536 mFullRedrawNeeded = true; 1537 try { 1538 mAttachInfo.mHardwareRenderer.updateSurface(mHolder.getSurface()); 1539 } catch (Surface.OutOfResourcesException e) { 1540 handleOutOfResourcesException(e); 1541 return; 1542 } 1543 } 1544 } catch (RemoteException e) { 1545 } 1546 1547 if (DEBUG_ORIENTATION) Log.v( 1548 TAG, "Relayout returned: frame=" + frame + ", surface=" + mSurface); 1549 1550 attachInfo.mWindowLeft = frame.left; 1551 attachInfo.mWindowTop = frame.top; 1552 1553 // !!FIXME!! This next section handles the case where we did not get the 1554 // window size we asked for. We should avoid this by getting a maximum size from 1555 // the window session beforehand. 1556 if (mWidth != frame.width() || mHeight != frame.height()) { 1557 mWidth = frame.width(); 1558 mHeight = frame.height(); 1559 } 1560 1561 if (mSurfaceHolder != null) { 1562 // The app owns the surface; tell it about what is going on. 1563 if (mSurface.isValid()) { 1564 // XXX .copyFrom() doesn't work! 1565 //mSurfaceHolder.mSurface.copyFrom(mSurface); 1566 mSurfaceHolder.mSurface = mSurface; 1567 } 1568 mSurfaceHolder.setSurfaceFrameSize(mWidth, mHeight); 1569 mSurfaceHolder.mSurfaceLock.unlock(); 1570 if (mSurface.isValid()) { 1571 if (!hadSurface) { 1572 mSurfaceHolder.ungetCallbacks(); 1573 1574 mIsCreating = true; 1575 mSurfaceHolderCallback.surfaceCreated(mSurfaceHolder); 1576 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1577 if (callbacks != null) { 1578 for (SurfaceHolder.Callback c : callbacks) { 1579 c.surfaceCreated(mSurfaceHolder); 1580 } 1581 } 1582 surfaceChanged = true; 1583 } 1584 if (surfaceChanged) { 1585 mSurfaceHolderCallback.surfaceChanged(mSurfaceHolder, 1586 lp.format, mWidth, mHeight); 1587 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1588 if (callbacks != null) { 1589 for (SurfaceHolder.Callback c : callbacks) { 1590 c.surfaceChanged(mSurfaceHolder, lp.format, 1591 mWidth, mHeight); 1592 } 1593 } 1594 } 1595 mIsCreating = false; 1596 } else if (hadSurface) { 1597 mSurfaceHolder.ungetCallbacks(); 1598 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1599 mSurfaceHolderCallback.surfaceDestroyed(mSurfaceHolder); 1600 if (callbacks != null) { 1601 for (SurfaceHolder.Callback c : callbacks) { 1602 c.surfaceDestroyed(mSurfaceHolder); 1603 } 1604 } 1605 mSurfaceHolder.mSurfaceLock.lock(); 1606 try { 1607 mSurfaceHolder.mSurface = new Surface(); 1608 } finally { 1609 mSurfaceHolder.mSurfaceLock.unlock(); 1610 } 1611 } 1612 } 1613 1614 if (mAttachInfo.mHardwareRenderer != null && 1615 mAttachInfo.mHardwareRenderer.isEnabled()) { 1616 if (hwInitialized || 1617 mWidth != mAttachInfo.mHardwareRenderer.getWidth() || 1618 mHeight != mAttachInfo.mHardwareRenderer.getHeight()) { 1619 mAttachInfo.mHardwareRenderer.setup(mWidth, mHeight); 1620 if (!hwInitialized) { 1621 mAttachInfo.mHardwareRenderer.invalidate(mHolder.getSurface()); 1622 mFullRedrawNeeded = true; 1623 } 1624 } 1625 } 1626 1627 if (!mStopped) { 1628 boolean focusChangedDueToTouchMode = ensureTouchModeLocally( 1629 (relayoutResult&WindowManagerGlobal.RELAYOUT_RES_IN_TOUCH_MODE) != 0); 1630 if (focusChangedDueToTouchMode || mWidth != host.getMeasuredWidth() 1631 || mHeight != host.getMeasuredHeight() || contentInsetsChanged) { 1632 int childWidthMeasureSpec = getRootMeasureSpec(mWidth, lp.width); 1633 int childHeightMeasureSpec = getRootMeasureSpec(mHeight, lp.height); 1634 1635 if (DEBUG_LAYOUT) Log.v(TAG, "Ooops, something changed! mWidth=" 1636 + mWidth + " measuredWidth=" + host.getMeasuredWidth() 1637 + " mHeight=" + mHeight 1638 + " measuredHeight=" + host.getMeasuredHeight() 1639 + " coveredInsetsChanged=" + contentInsetsChanged); 1640 1641 // Ask host how big it wants to be 1642 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1643 1644 // Implementation of weights from WindowManager.LayoutParams 1645 // We just grow the dimensions as needed and re-measure if 1646 // needs be 1647 int width = host.getMeasuredWidth(); 1648 int height = host.getMeasuredHeight(); 1649 boolean measureAgain = false; 1650 1651 if (lp.horizontalWeight > 0.0f) { 1652 width += (int) ((mWidth - width) * lp.horizontalWeight); 1653 childWidthMeasureSpec = MeasureSpec.makeMeasureSpec(width, 1654 MeasureSpec.EXACTLY); 1655 measureAgain = true; 1656 } 1657 if (lp.verticalWeight > 0.0f) { 1658 height += (int) ((mHeight - height) * lp.verticalWeight); 1659 childHeightMeasureSpec = MeasureSpec.makeMeasureSpec(height, 1660 MeasureSpec.EXACTLY); 1661 measureAgain = true; 1662 } 1663 1664 if (measureAgain) { 1665 if (DEBUG_LAYOUT) Log.v(TAG, 1666 "And hey let's measure once more: width=" + width 1667 + " height=" + height); 1668 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1669 } 1670 1671 layoutRequested = true; 1672 } 1673 } 1674 } else { 1675 // Not the first pass and no window/insets/visibility change but the window 1676 // may have moved and we need check that and if so to update the left and right 1677 // in the attach info. We translate only the window frame since on window move 1678 // the window manager tells us only for the new frame but the insets are the 1679 // same and we do not want to translate them more than once. 1680 1681 // TODO: Well, we are checking whether the frame has changed similarly 1682 // to how this is done for the insets. This is however incorrect since 1683 // the insets and the frame are translated. For example, the old frame 1684 // was (1, 1 - 1, 1) and was translated to say (2, 2 - 2, 2), now the new 1685 // reported frame is (2, 2 - 2, 2) which implies no change but this is not 1686 // true since we are comparing a not translated value to a translated one. 1687 // This scenario is rare but we may want to fix that. 1688 1689 final boolean windowMoved = (attachInfo.mWindowLeft != frame.left 1690 || attachInfo.mWindowTop != frame.top); 1691 if (windowMoved) { 1692 if (mTranslator != null) { 1693 mTranslator.translateRectInScreenToAppWinFrame(frame); 1694 } 1695 attachInfo.mWindowLeft = frame.left; 1696 attachInfo.mWindowTop = frame.top; 1697 } 1698 } 1699 1700 final boolean didLayout = layoutRequested && !mStopped; 1701 boolean triggerGlobalLayoutListener = didLayout 1702 || attachInfo.mRecomputeGlobalAttributes; 1703 if (didLayout) { 1704 performLayout(lp, desiredWindowWidth, desiredWindowHeight); 1705 1706 // By this point all views have been sized and positioned 1707 // We can compute the transparent area 1708 1709 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 1710 // start out transparent 1711 // TODO: AVOID THAT CALL BY CACHING THE RESULT? 1712 host.getLocationInWindow(mTmpLocation); 1713 mTransparentRegion.set(mTmpLocation[0], mTmpLocation[1], 1714 mTmpLocation[0] + host.mRight - host.mLeft, 1715 mTmpLocation[1] + host.mBottom - host.mTop); 1716 1717 host.gatherTransparentRegion(mTransparentRegion); 1718 if (mTranslator != null) { 1719 mTranslator.translateRegionInWindowToScreen(mTransparentRegion); 1720 } 1721 1722 if (!mTransparentRegion.equals(mPreviousTransparentRegion)) { 1723 mPreviousTransparentRegion.set(mTransparentRegion); 1724 mFullRedrawNeeded = true; 1725 // reconfigure window manager 1726 try { 1727 mWindowSession.setTransparentRegion(mWindow, mTransparentRegion); 1728 } catch (RemoteException e) { 1729 } 1730 } 1731 } 1732 1733 if (DBG) { 1734 System.out.println("======================================"); 1735 System.out.println("performTraversals -- after setFrame"); 1736 host.debug(); 1737 } 1738 } 1739 1740 if (triggerGlobalLayoutListener) { 1741 attachInfo.mRecomputeGlobalAttributes = false; 1742 attachInfo.mTreeObserver.dispatchOnGlobalLayout(); 1743 } 1744 1745 if (computesInternalInsets) { 1746 // Clear the original insets. 1747 final ViewTreeObserver.InternalInsetsInfo insets = attachInfo.mGivenInternalInsets; 1748 insets.reset(); 1749 1750 // Compute new insets in place. 1751 attachInfo.mTreeObserver.dispatchOnComputeInternalInsets(insets); 1752 1753 // Tell the window manager. 1754 if (insetsPending || !mLastGivenInsets.equals(insets)) { 1755 mLastGivenInsets.set(insets); 1756 1757 // Translate insets to screen coordinates if needed. 1758 final Rect contentInsets; 1759 final Rect visibleInsets; 1760 final Region touchableRegion; 1761 if (mTranslator != null) { 1762 contentInsets = mTranslator.getTranslatedContentInsets(insets.contentInsets); 1763 visibleInsets = mTranslator.getTranslatedVisibleInsets(insets.visibleInsets); 1764 touchableRegion = mTranslator.getTranslatedTouchableArea(insets.touchableRegion); 1765 } else { 1766 contentInsets = insets.contentInsets; 1767 visibleInsets = insets.visibleInsets; 1768 touchableRegion = insets.touchableRegion; 1769 } 1770 1771 try { 1772 mWindowSession.setInsets(mWindow, insets.mTouchableInsets, 1773 contentInsets, visibleInsets, touchableRegion); 1774 } catch (RemoteException e) { 1775 } 1776 } 1777 } 1778 1779 boolean skipDraw = false; 1780 1781 if (mFirst) { 1782 // handle first focus request 1783 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: mView.hasFocus()=" 1784 + mView.hasFocus()); 1785 if (mView != null) { 1786 if (!mView.hasFocus()) { 1787 mView.requestFocus(View.FOCUS_FORWARD); 1788 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: requested focused view=" 1789 + mView.findFocus()); 1790 } else { 1791 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: existing focused view=" 1792 + mView.findFocus()); 1793 } 1794 } 1795 if ((relayoutResult & WindowManagerGlobal.RELAYOUT_RES_ANIMATING) != 0) { 1796 // The first time we relayout the window, if the system is 1797 // doing window animations, we want to hold of on any future 1798 // draws until the animation is done. 1799 mWindowsAnimating = true; 1800 } 1801 } else if (mWindowsAnimating) { 1802 skipDraw = true; 1803 } 1804 1805 mFirst = false; 1806 mWillDrawSoon = false; 1807 mNewSurfaceNeeded = false; 1808 mViewVisibility = viewVisibility; 1809 1810 if (mAttachInfo.mHasWindowFocus) { 1811 final boolean imTarget = WindowManager.LayoutParams 1812 .mayUseInputMethod(mWindowAttributes.flags); 1813 if (imTarget != mLastWasImTarget) { 1814 mLastWasImTarget = imTarget; 1815 InputMethodManager imm = InputMethodManager.peekInstance(); 1816 if (imm != null && imTarget) { 1817 imm.startGettingWindowFocus(mView); 1818 imm.onWindowFocus(mView, mView.findFocus(), 1819 mWindowAttributes.softInputMode, 1820 !mHasHadWindowFocus, mWindowAttributes.flags); 1821 } 1822 } 1823 } 1824 1825 // Remember if we must report the next draw. 1826 if ((relayoutResult & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 1827 mReportNextDraw = true; 1828 } 1829 1830 boolean cancelDraw = attachInfo.mTreeObserver.dispatchOnPreDraw() || 1831 viewVisibility != View.VISIBLE; 1832 1833 if (!cancelDraw && !newSurface) { 1834 if (!skipDraw || mReportNextDraw) { 1835 if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 1836 for (int i = 0; i < mPendingTransitions.size(); ++i) { 1837 mPendingTransitions.get(i).startChangingAnimations(); 1838 } 1839 mPendingTransitions.clear(); 1840 } 1841 1842 performDraw(); 1843 } 1844 } else { 1845 if (viewVisibility == View.VISIBLE) { 1846 // Try again 1847 scheduleTraversals(); 1848 } else if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 1849 for (int i = 0; i < mPendingTransitions.size(); ++i) { 1850 mPendingTransitions.get(i).endChangingAnimations(); 1851 } 1852 mPendingTransitions.clear(); 1853 } 1854 } 1855 1856 mIsInTraversal = false; 1857 } 1858 1859 private void handleOutOfResourcesException(Surface.OutOfResourcesException e) { 1860 Log.e(TAG, "OutOfResourcesException initializing HW surface", e); 1861 try { 1862 if (!mWindowSession.outOfMemory(mWindow) && 1863 Process.myUid() != Process.SYSTEM_UID) { 1864 Slog.w(TAG, "No processes killed for memory; killing self"); 1865 Process.killProcess(Process.myPid()); 1866 } 1867 } catch (RemoteException ex) { 1868 } 1869 mLayoutRequested = true; // ask wm for a new surface next time. 1870 } 1871 1872 private void performMeasure(int childWidthMeasureSpec, int childHeightMeasureSpec) { 1873 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "measure"); 1874 try { 1875 mView.measure(childWidthMeasureSpec, childHeightMeasureSpec); 1876 } finally { 1877 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 1878 } 1879 } 1880 1881 /** 1882 * Called by {@link android.view.View#isInLayout()} to determine whether the view hierarchy 1883 * is currently undergoing a layout pass. 1884 * 1885 * @return whether the view hierarchy is currently undergoing a layout pass 1886 */ 1887 boolean isInLayout() { 1888 return mInLayout; 1889 } 1890 1891 /** 1892 * Called by {@link android.view.View#requestLayout()} if the view hierarchy is currently 1893 * undergoing a layout pass. requestLayout() should not generally be called during layout, 1894 * unless the container hierarchy knows what it is doing (i.e., it is fine as long as 1895 * all children in that container hierarchy are measured and laid out at the end of the layout 1896 * pass for that container). If requestLayout() is called anyway, we handle it correctly 1897 * by registering all requesters during a frame as it proceeds. At the end of the frame, 1898 * we check all of those views to see if any still have pending layout requests, which 1899 * indicates that they were not correctly handled by their container hierarchy. If that is 1900 * the case, we clear all such flags in the tree, to remove the buggy flag state that leads 1901 * to blank containers, and force a second request/measure/layout pass in this frame. If 1902 * more requestLayout() calls are received during that second layout pass, we post those 1903 * requests to the next frame to avoid possible infinite loops. 1904 * 1905 * <p>The return value from this method indicates whether the request should proceed 1906 * (if it is a request during the first layout pass) or should be skipped and posted to the 1907 * next frame (if it is a request during the second layout pass).</p> 1908 * 1909 * @param view the view that requested the layout. 1910 * 1911 * @return true if request should proceed, false otherwise. 1912 */ 1913 boolean requestLayoutDuringLayout(final View view) { 1914 if (view.mParent == null || view.mAttachInfo == null) { 1915 // Would not normally trigger another layout, so just let it pass through as usual 1916 return true; 1917 } 1918 if (!mLayoutRequesters.contains(view)) { 1919 mLayoutRequesters.add(view); 1920 } 1921 if (!mHandlingLayoutInLayoutRequest) { 1922 // Let the request proceed normally; it will be processed in a second layout pass 1923 // if necessary 1924 return true; 1925 } else { 1926 // Don't let the request proceed during the second layout pass. 1927 // It will post to the next frame instead. 1928 return false; 1929 } 1930 } 1931 1932 private void performLayout(WindowManager.LayoutParams lp, int desiredWindowWidth, 1933 int desiredWindowHeight) { 1934 mLayoutRequested = false; 1935 mScrollMayChange = true; 1936 mInLayout = true; 1937 1938 final View host = mView; 1939 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) { 1940 Log.v(TAG, "Laying out " + host + " to (" + 1941 host.getMeasuredWidth() + ", " + host.getMeasuredHeight() + ")"); 1942 } 1943 1944 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "layout"); 1945 try { 1946 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 1947 1948 mInLayout = false; 1949 int numViewsRequestingLayout = mLayoutRequesters.size(); 1950 if (numViewsRequestingLayout > 0) { 1951 // requestLayout() was called during layout. 1952 // If no layout-request flags are set on the requesting views, there is no problem. 1953 // If some requests are still pending, then we need to clear those flags and do 1954 // a full request/measure/layout pass to handle this situation. 1955 ArrayList<View> validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, 1956 false); 1957 if (validLayoutRequesters != null) { 1958 // Set this flag to indicate that any further requests are happening during 1959 // the second pass, which may result in posting those requests to the next 1960 // frame instead 1961 mHandlingLayoutInLayoutRequest = true; 1962 1963 // Process fresh layout requests, then measure and layout 1964 int numValidRequests = validLayoutRequesters.size(); 1965 for (int i = 0; i < numValidRequests; ++i) { 1966 final View view = validLayoutRequesters.get(i); 1967 Log.w("View", "requestLayout() improperly called by " + view + 1968 " during layout: running second layout pass"); 1969 view.requestLayout(); 1970 } 1971 measureHierarchy(host, lp, mView.getContext().getResources(), 1972 desiredWindowWidth, desiredWindowHeight); 1973 mInLayout = true; 1974 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 1975 1976 mHandlingLayoutInLayoutRequest = false; 1977 1978 // Check the valid requests again, this time without checking/clearing the 1979 // layout flags, since requests happening during the second pass get noop'd 1980 validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, true); 1981 if (validLayoutRequesters != null) { 1982 final ArrayList<View> finalRequesters = validLayoutRequesters; 1983 // Post second-pass requests to the next frame 1984 getRunQueue().post(new Runnable() { 1985 @Override 1986 public void run() { 1987 int numValidRequests = finalRequesters.size(); 1988 for (int i = 0; i < numValidRequests; ++i) { 1989 final View view = finalRequesters.get(i); 1990 Log.w("View", "requestLayout() improperly called by " + view + 1991 " during second layout pass: posting in next frame"); 1992 view.requestLayout(); 1993 } 1994 } 1995 }); 1996 } 1997 } 1998 1999 } 2000 } finally { 2001 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2002 } 2003 mInLayout = false; 2004 } 2005 2006 /** 2007 * This method is called during layout when there have been calls to requestLayout() during 2008 * layout. It walks through the list of views that requested layout to determine which ones 2009 * still need it, based on visibility in the hierarchy and whether they have already been 2010 * handled (as is usually the case with ListView children). 2011 * 2012 * @param layoutRequesters The list of views that requested layout during layout 2013 * @param secondLayoutRequests Whether the requests were issued during the second layout pass. 2014 * If so, the FORCE_LAYOUT flag was not set on requesters. 2015 * @return A list of the actual views that still need to be laid out. 2016 */ 2017 private ArrayList<View> getValidLayoutRequesters(ArrayList<View> layoutRequesters, 2018 boolean secondLayoutRequests) { 2019 2020 int numViewsRequestingLayout = layoutRequesters.size(); 2021 ArrayList<View> validLayoutRequesters = null; 2022 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2023 View view = layoutRequesters.get(i); 2024 if (view != null && view.mAttachInfo != null && view.mParent != null && 2025 (secondLayoutRequests || (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) == 2026 View.PFLAG_FORCE_LAYOUT)) { 2027 boolean gone = false; 2028 View parent = view; 2029 // Only trigger new requests for views in a non-GONE hierarchy 2030 while (parent != null) { 2031 if ((parent.mViewFlags & View.VISIBILITY_MASK) == View.GONE) { 2032 gone = true; 2033 break; 2034 } 2035 if (parent.mParent instanceof View) { 2036 parent = (View) parent.mParent; 2037 } else { 2038 parent = null; 2039 } 2040 } 2041 if (!gone) { 2042 if (validLayoutRequesters == null) { 2043 validLayoutRequesters = new ArrayList<View>(); 2044 } 2045 validLayoutRequesters.add(view); 2046 } 2047 } 2048 } 2049 if (!secondLayoutRequests) { 2050 // If we're checking the layout flags, then we need to clean them up also 2051 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2052 View view = layoutRequesters.get(i); 2053 while (view != null && 2054 (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) != 0) { 2055 view.mPrivateFlags &= ~View.PFLAG_FORCE_LAYOUT; 2056 if (view.mParent instanceof View) { 2057 view = (View) view.mParent; 2058 } else { 2059 view = null; 2060 } 2061 } 2062 } 2063 } 2064 layoutRequesters.clear(); 2065 return validLayoutRequesters; 2066 } 2067 2068 public void requestTransparentRegion(View child) { 2069 // the test below should not fail unless someone is messing with us 2070 checkThread(); 2071 if (mView == child) { 2072 mView.mPrivateFlags |= View.PFLAG_REQUEST_TRANSPARENT_REGIONS; 2073 // Need to make sure we re-evaluate the window attributes next 2074 // time around, to ensure the window has the correct format. 2075 mWindowAttributesChanged = true; 2076 mWindowAttributesChangesFlag = 0; 2077 requestLayout(); 2078 } 2079 } 2080 2081 /** 2082 * Figures out the measure spec for the root view in a window based on it's 2083 * layout params. 2084 * 2085 * @param windowSize 2086 * The available width or height of the window 2087 * 2088 * @param rootDimension 2089 * The layout params for one dimension (width or height) of the 2090 * window. 2091 * 2092 * @return The measure spec to use to measure the root view. 2093 */ 2094 private static int getRootMeasureSpec(int windowSize, int rootDimension) { 2095 int measureSpec; 2096 switch (rootDimension) { 2097 2098 case ViewGroup.LayoutParams.MATCH_PARENT: 2099 // Window can't resize. Force root view to be windowSize. 2100 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.EXACTLY); 2101 break; 2102 case ViewGroup.LayoutParams.WRAP_CONTENT: 2103 // Window can resize. Set max size for root view. 2104 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.AT_MOST); 2105 break; 2106 default: 2107 // Window wants to be an exact size. Force root view to be that size. 2108 measureSpec = MeasureSpec.makeMeasureSpec(rootDimension, MeasureSpec.EXACTLY); 2109 break; 2110 } 2111 return measureSpec; 2112 } 2113 2114 int mHardwareYOffset; 2115 int mResizeAlpha; 2116 final Paint mResizePaint = new Paint(); 2117 2118 public void onHardwarePreDraw(HardwareCanvas canvas) { 2119 canvas.translate(0, -mHardwareYOffset); 2120 } 2121 2122 public void onHardwarePostDraw(HardwareCanvas canvas) { 2123 if (mResizeBuffer != null) { 2124 mResizePaint.setAlpha(mResizeAlpha); 2125 canvas.drawHardwareLayer(mResizeBuffer, 0.0f, mHardwareYOffset, mResizePaint); 2126 } 2127 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2128 } 2129 2130 /** 2131 * @hide 2132 */ 2133 void outputDisplayList(View view) { 2134 if (mAttachInfo != null && mAttachInfo.mHardwareCanvas != null) { 2135 DisplayList displayList = view.getDisplayList(); 2136 if (displayList != null) { 2137 mAttachInfo.mHardwareCanvas.outputDisplayList(displayList); 2138 } 2139 } 2140 } 2141 2142 /** 2143 * @see #PROPERTY_PROFILE_RENDERING 2144 */ 2145 private void profileRendering(boolean enabled) { 2146 if (mProfileRendering) { 2147 mRenderProfilingEnabled = enabled; 2148 2149 if (mRenderProfiler != null) { 2150 mChoreographer.removeFrameCallback(mRenderProfiler); 2151 } 2152 if (mRenderProfilingEnabled) { 2153 if (mRenderProfiler == null) { 2154 mRenderProfiler = new Choreographer.FrameCallback() { 2155 @Override 2156 public void doFrame(long frameTimeNanos) { 2157 mDirty.set(0, 0, mWidth, mHeight); 2158 scheduleTraversals(); 2159 if (mRenderProfilingEnabled) { 2160 mChoreographer.postFrameCallback(mRenderProfiler); 2161 } 2162 } 2163 }; 2164 } 2165 mChoreographer.postFrameCallback(mRenderProfiler); 2166 } else { 2167 mRenderProfiler = null; 2168 } 2169 } 2170 } 2171 2172 /** 2173 * Called from draw() when DEBUG_FPS is enabled 2174 */ 2175 private void trackFPS() { 2176 // Tracks frames per second drawn. First value in a series of draws may be bogus 2177 // because it down not account for the intervening idle time 2178 long nowTime = System.currentTimeMillis(); 2179 if (mFpsStartTime < 0) { 2180 mFpsStartTime = mFpsPrevTime = nowTime; 2181 mFpsNumFrames = 0; 2182 } else { 2183 ++mFpsNumFrames; 2184 String thisHash = Integer.toHexString(System.identityHashCode(this)); 2185 long frameTime = nowTime - mFpsPrevTime; 2186 long totalTime = nowTime - mFpsStartTime; 2187 Log.v(TAG, "0x" + thisHash + "\tFrame time:\t" + frameTime); 2188 mFpsPrevTime = nowTime; 2189 if (totalTime > 1000) { 2190 float fps = (float) mFpsNumFrames * 1000 / totalTime; 2191 Log.v(TAG, "0x" + thisHash + "\tFPS:\t" + fps); 2192 mFpsStartTime = nowTime; 2193 mFpsNumFrames = 0; 2194 } 2195 } 2196 } 2197 2198 private void performDraw() { 2199 if (!mAttachInfo.mScreenOn && !mReportNextDraw) { 2200 return; 2201 } 2202 2203 final boolean fullRedrawNeeded = mFullRedrawNeeded; 2204 mFullRedrawNeeded = false; 2205 2206 mIsDrawing = true; 2207 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "draw"); 2208 try { 2209 draw(fullRedrawNeeded); 2210 } finally { 2211 mIsDrawing = false; 2212 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2213 } 2214 2215 if (mReportNextDraw) { 2216 mReportNextDraw = false; 2217 2218 if (LOCAL_LOGV) { 2219 Log.v(TAG, "FINISHED DRAWING: " + mWindowAttributes.getTitle()); 2220 } 2221 if (mSurfaceHolder != null && mSurface.isValid()) { 2222 mSurfaceHolderCallback.surfaceRedrawNeeded(mSurfaceHolder); 2223 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 2224 if (callbacks != null) { 2225 for (SurfaceHolder.Callback c : callbacks) { 2226 if (c instanceof SurfaceHolder.Callback2) { 2227 ((SurfaceHolder.Callback2)c).surfaceRedrawNeeded( 2228 mSurfaceHolder); 2229 } 2230 } 2231 } 2232 } 2233 try { 2234 mWindowSession.finishDrawing(mWindow); 2235 } catch (RemoteException e) { 2236 } 2237 } 2238 } 2239 2240 private void draw(boolean fullRedrawNeeded) { 2241 Surface surface = mSurface; 2242 if (!surface.isValid()) { 2243 return; 2244 } 2245 2246 if (DEBUG_FPS) { 2247 trackFPS(); 2248 } 2249 2250 if (!sFirstDrawComplete) { 2251 synchronized (sFirstDrawHandlers) { 2252 sFirstDrawComplete = true; 2253 final int count = sFirstDrawHandlers.size(); 2254 for (int i = 0; i< count; i++) { 2255 mHandler.post(sFirstDrawHandlers.get(i)); 2256 } 2257 } 2258 } 2259 2260 scrollToRectOrFocus(null, false); 2261 2262 final AttachInfo attachInfo = mAttachInfo; 2263 if (attachInfo.mViewScrollChanged) { 2264 attachInfo.mViewScrollChanged = false; 2265 attachInfo.mTreeObserver.dispatchOnScrollChanged(); 2266 } 2267 2268 int yoff; 2269 boolean animating = mScroller != null && mScroller.computeScrollOffset(); 2270 if (animating) { 2271 yoff = mScroller.getCurrY(); 2272 } else { 2273 yoff = mScrollY; 2274 } 2275 if (mCurScrollY != yoff) { 2276 mCurScrollY = yoff; 2277 fullRedrawNeeded = true; 2278 } 2279 2280 final float appScale = attachInfo.mApplicationScale; 2281 final boolean scalingRequired = attachInfo.mScalingRequired; 2282 2283 int resizeAlpha = 0; 2284 if (mResizeBuffer != null) { 2285 long deltaTime = SystemClock.uptimeMillis() - mResizeBufferStartTime; 2286 if (deltaTime < mResizeBufferDuration) { 2287 float amt = deltaTime/(float) mResizeBufferDuration; 2288 amt = mResizeInterpolator.getInterpolation(amt); 2289 animating = true; 2290 resizeAlpha = 255 - (int)(amt*255); 2291 } else { 2292 disposeResizeBuffer(); 2293 } 2294 } 2295 2296 final Rect dirty = mDirty; 2297 if (mSurfaceHolder != null) { 2298 // The app owns the surface, we won't draw. 2299 dirty.setEmpty(); 2300 if (animating) { 2301 if (mScroller != null) { 2302 mScroller.abortAnimation(); 2303 } 2304 disposeResizeBuffer(); 2305 } 2306 return; 2307 } 2308 2309 if (fullRedrawNeeded) { 2310 attachInfo.mIgnoreDirtyState = true; 2311 dirty.set(0, 0, (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 2312 } 2313 2314 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2315 Log.v(TAG, "Draw " + mView + "/" 2316 + mWindowAttributes.getTitle() 2317 + ": dirty={" + dirty.left + "," + dirty.top 2318 + "," + dirty.right + "," + dirty.bottom + "} surface=" 2319 + surface + " surface.isValid()=" + surface.isValid() + ", appScale:" + 2320 appScale + ", width=" + mWidth + ", height=" + mHeight); 2321 } 2322 2323 invalidateDisplayLists(); 2324 2325 attachInfo.mTreeObserver.dispatchOnDraw(); 2326 2327 if (!dirty.isEmpty() || mIsAnimating) { 2328 if (attachInfo.mHardwareRenderer != null && attachInfo.mHardwareRenderer.isEnabled()) { 2329 // Draw with hardware renderer. 2330 mIsAnimating = false; 2331 mHardwareYOffset = yoff; 2332 mResizeAlpha = resizeAlpha; 2333 2334 mCurrentDirty.set(dirty); 2335 dirty.setEmpty(); 2336 2337 attachInfo.mHardwareRenderer.draw(mView, attachInfo, this, 2338 animating ? null : mCurrentDirty); 2339 } else { 2340 // If we get here with a disabled & requested hardware renderer, something went 2341 // wrong (an invalidate posted right before we destroyed the hardware surface 2342 // for instance) so we should just bail out. Locking the surface with software 2343 // rendering at this point would lock it forever and prevent hardware renderer 2344 // from doing its job when it comes back. 2345 // Before we request a new frame we must however attempt to reinitiliaze the 2346 // hardware renderer if it's in requested state. This would happen after an 2347 // eglTerminate() for instance. 2348 if (attachInfo.mHardwareRenderer != null && 2349 !attachInfo.mHardwareRenderer.isEnabled() && 2350 attachInfo.mHardwareRenderer.isRequested()) { 2351 2352 try { 2353 attachInfo.mHardwareRenderer.initializeIfNeeded(mWidth, mHeight, 2354 mHolder.getSurface()); 2355 } catch (Surface.OutOfResourcesException e) { 2356 handleOutOfResourcesException(e); 2357 return; 2358 } 2359 2360 mFullRedrawNeeded = true; 2361 scheduleTraversals(); 2362 return; 2363 } 2364 2365 if (!drawSoftware(surface, attachInfo, yoff, scalingRequired, dirty)) { 2366 return; 2367 } 2368 } 2369 } 2370 2371 if (animating) { 2372 mFullRedrawNeeded = true; 2373 scheduleTraversals(); 2374 } 2375 } 2376 2377 /** 2378 * @return true if drawing was succesfull, false if an error occurred 2379 */ 2380 private boolean drawSoftware(Surface surface, AttachInfo attachInfo, int yoff, 2381 boolean scalingRequired, Rect dirty) { 2382 2383 // Draw with software renderer. 2384 Canvas canvas; 2385 try { 2386 int left = dirty.left; 2387 int top = dirty.top; 2388 int right = dirty.right; 2389 int bottom = dirty.bottom; 2390 2391 canvas = mSurface.lockCanvas(dirty); 2392 2393 // The dirty rectangle can be modified by Surface.lockCanvas() 2394 //noinspection ConstantConditions 2395 if (left != dirty.left || top != dirty.top || right != dirty.right || 2396 bottom != dirty.bottom) { 2397 attachInfo.mIgnoreDirtyState = true; 2398 } 2399 2400 // TODO: Do this in native 2401 canvas.setDensity(mDensity); 2402 } catch (Surface.OutOfResourcesException e) { 2403 handleOutOfResourcesException(e); 2404 return false; 2405 } catch (IllegalArgumentException e) { 2406 Log.e(TAG, "Could not lock surface", e); 2407 // Don't assume this is due to out of memory, it could be 2408 // something else, and if it is something else then we could 2409 // kill stuff (or ourself) for no reason. 2410 mLayoutRequested = true; // ask wm for a new surface next time. 2411 return false; 2412 } 2413 2414 try { 2415 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2416 Log.v(TAG, "Surface " + surface + " drawing to bitmap w=" 2417 + canvas.getWidth() + ", h=" + canvas.getHeight()); 2418 //canvas.drawARGB(255, 255, 0, 0); 2419 } 2420 2421 // If this bitmap's format includes an alpha channel, we 2422 // need to clear it before drawing so that the child will 2423 // properly re-composite its drawing on a transparent 2424 // background. This automatically respects the clip/dirty region 2425 // or 2426 // If we are applying an offset, we need to clear the area 2427 // where the offset doesn't appear to avoid having garbage 2428 // left in the blank areas. 2429 if (!canvas.isOpaque() || yoff != 0) { 2430 canvas.drawColor(0, PorterDuff.Mode.CLEAR); 2431 } 2432 2433 dirty.setEmpty(); 2434 mIsAnimating = false; 2435 attachInfo.mDrawingTime = SystemClock.uptimeMillis(); 2436 mView.mPrivateFlags |= View.PFLAG_DRAWN; 2437 2438 if (DEBUG_DRAW) { 2439 Context cxt = mView.getContext(); 2440 Log.i(TAG, "Drawing: package:" + cxt.getPackageName() + 2441 ", metrics=" + cxt.getResources().getDisplayMetrics() + 2442 ", compatibilityInfo=" + cxt.getResources().getCompatibilityInfo()); 2443 } 2444 try { 2445 canvas.translate(0, -yoff); 2446 if (mTranslator != null) { 2447 mTranslator.translateCanvas(canvas); 2448 } 2449 canvas.setScreenDensity(scalingRequired ? mNoncompatDensity : 0); 2450 attachInfo.mSetIgnoreDirtyState = false; 2451 2452 mView.draw(canvas); 2453 2454 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2455 } finally { 2456 if (!attachInfo.mSetIgnoreDirtyState) { 2457 // Only clear the flag if it was not set during the mView.draw() call 2458 attachInfo.mIgnoreDirtyState = false; 2459 } 2460 } 2461 } finally { 2462 try { 2463 surface.unlockCanvasAndPost(canvas); 2464 } catch (IllegalArgumentException e) { 2465 Log.e(TAG, "Could not unlock surface", e); 2466 mLayoutRequested = true; // ask wm for a new surface next time. 2467 //noinspection ReturnInsideFinallyBlock 2468 return false; 2469 } 2470 2471 if (LOCAL_LOGV) { 2472 Log.v(TAG, "Surface " + surface + " unlockCanvasAndPost"); 2473 } 2474 } 2475 return true; 2476 } 2477 2478 /** 2479 * We want to draw a highlight around the current accessibility focused. 2480 * Since adding a style for all possible view is not a viable option we 2481 * have this specialized drawing method. 2482 * 2483 * Note: We are doing this here to be able to draw the highlight for 2484 * virtual views in addition to real ones. 2485 * 2486 * @param canvas The canvas on which to draw. 2487 */ 2488 private void drawAccessibilityFocusedDrawableIfNeeded(Canvas canvas) { 2489 AccessibilityManager manager = AccessibilityManager.getInstance(mView.mContext); 2490 if (!manager.isEnabled() || !manager.isTouchExplorationEnabled()) { 2491 return; 2492 } 2493 if (mAccessibilityFocusedHost == null || mAccessibilityFocusedHost.mAttachInfo == null) { 2494 return; 2495 } 2496 Drawable drawable = getAccessibilityFocusedDrawable(); 2497 if (drawable == null) { 2498 return; 2499 } 2500 AccessibilityNodeProvider provider = 2501 mAccessibilityFocusedHost.getAccessibilityNodeProvider(); 2502 Rect bounds = mView.mAttachInfo.mTmpInvalRect; 2503 if (provider == null) { 2504 mAccessibilityFocusedHost.getBoundsOnScreen(bounds); 2505 } else { 2506 if (mAccessibilityFocusedVirtualView == null) { 2507 return; 2508 } 2509 mAccessibilityFocusedVirtualView.getBoundsInScreen(bounds); 2510 } 2511 bounds.offset(-mAttachInfo.mWindowLeft, -mAttachInfo.mWindowTop); 2512 bounds.intersect(0, 0, mAttachInfo.mViewRootImpl.mWidth, mAttachInfo.mViewRootImpl.mHeight); 2513 drawable.setBounds(bounds); 2514 drawable.draw(canvas); 2515 } 2516 2517 private Drawable getAccessibilityFocusedDrawable() { 2518 if (mAttachInfo != null) { 2519 // Lazily load the accessibility focus drawable. 2520 if (mAttachInfo.mAccessibilityFocusDrawable == null) { 2521 TypedValue value = new TypedValue(); 2522 final boolean resolved = mView.mContext.getTheme().resolveAttribute( 2523 R.attr.accessibilityFocusedDrawable, value, true); 2524 if (resolved) { 2525 mAttachInfo.mAccessibilityFocusDrawable = 2526 mView.mContext.getResources().getDrawable(value.resourceId); 2527 } 2528 } 2529 return mAttachInfo.mAccessibilityFocusDrawable; 2530 } 2531 return null; 2532 } 2533 2534 void invalidateDisplayLists() { 2535 final ArrayList<DisplayList> displayLists = mDisplayLists; 2536 final int count = displayLists.size(); 2537 2538 for (int i = 0; i < count; i++) { 2539 final DisplayList displayList = displayLists.get(i); 2540 if (displayList.isDirty()) { 2541 displayList.clear(); 2542 } 2543 } 2544 2545 displayLists.clear(); 2546 } 2547 2548 /** 2549 * @hide 2550 */ 2551 public void setDrawDuringWindowsAnimating(boolean value) { 2552 mDrawDuringWindowsAnimating = value; 2553 if (value) { 2554 handleDispatchDoneAnimating(); 2555 } 2556 } 2557 2558 boolean scrollToRectOrFocus(Rect rectangle, boolean immediate) { 2559 final View.AttachInfo attachInfo = mAttachInfo; 2560 final Rect ci = attachInfo.mContentInsets; 2561 final Rect vi = attachInfo.mVisibleInsets; 2562 int scrollY = 0; 2563 boolean handled = false; 2564 2565 if (vi.left > ci.left || vi.top > ci.top 2566 || vi.right > ci.right || vi.bottom > ci.bottom) { 2567 // We'll assume that we aren't going to change the scroll 2568 // offset, since we want to avoid that unless it is actually 2569 // going to make the focus visible... otherwise we scroll 2570 // all over the place. 2571 scrollY = mScrollY; 2572 // We can be called for two different situations: during a draw, 2573 // to update the scroll position if the focus has changed (in which 2574 // case 'rectangle' is null), or in response to a 2575 // requestChildRectangleOnScreen() call (in which case 'rectangle' 2576 // is non-null and we just want to scroll to whatever that 2577 // rectangle is). 2578 final View focus = mView.findFocus(); 2579 if (focus == null) { 2580 return false; 2581 } 2582 View lastScrolledFocus = (mLastScrolledFocus != null) ? mLastScrolledFocus.get() : null; 2583 if (focus != lastScrolledFocus) { 2584 // If the focus has changed, then ignore any requests to scroll 2585 // to a rectangle; first we want to make sure the entire focus 2586 // view is visible. 2587 rectangle = null; 2588 } 2589 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Eval scroll: focus=" + focus 2590 + " rectangle=" + rectangle + " ci=" + ci 2591 + " vi=" + vi); 2592 if (focus == lastScrolledFocus && !mScrollMayChange && rectangle == null) { 2593 // Optimization: if the focus hasn't changed since last 2594 // time, and no layout has happened, then just leave things 2595 // as they are. 2596 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Keeping scroll y=" 2597 + mScrollY + " vi=" + vi.toShortString()); 2598 } else { 2599 // We need to determine if the currently focused view is 2600 // within the visible part of the window and, if not, apply 2601 // a pan so it can be seen. 2602 mLastScrolledFocus = new WeakReference<View>(focus); 2603 mScrollMayChange = false; 2604 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Need to scroll?"); 2605 // Try to find the rectangle from the focus view. 2606 if (focus.getGlobalVisibleRect(mVisRect, null)) { 2607 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Root w=" 2608 + mView.getWidth() + " h=" + mView.getHeight() 2609 + " ci=" + ci.toShortString() 2610 + " vi=" + vi.toShortString()); 2611 if (rectangle == null) { 2612 focus.getFocusedRect(mTempRect); 2613 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Focus " + focus 2614 + ": focusRect=" + mTempRect.toShortString()); 2615 if (mView instanceof ViewGroup) { 2616 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 2617 focus, mTempRect); 2618 } 2619 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2620 "Focus in window: focusRect=" 2621 + mTempRect.toShortString() 2622 + " visRect=" + mVisRect.toShortString()); 2623 } else { 2624 mTempRect.set(rectangle); 2625 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2626 "Request scroll to rect: " 2627 + mTempRect.toShortString() 2628 + " visRect=" + mVisRect.toShortString()); 2629 } 2630 if (mTempRect.intersect(mVisRect)) { 2631 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2632 "Focus window visible rect: " 2633 + mTempRect.toShortString()); 2634 if (mTempRect.height() > 2635 (mView.getHeight()-vi.top-vi.bottom)) { 2636 // If the focus simply is not going to fit, then 2637 // best is probably just to leave things as-is. 2638 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2639 "Too tall; leaving scrollY=" + scrollY); 2640 } else if ((mTempRect.top-scrollY) < vi.top) { 2641 scrollY -= vi.top - (mTempRect.top-scrollY); 2642 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2643 "Top covered; scrollY=" + scrollY); 2644 } else if ((mTempRect.bottom-scrollY) 2645 > (mView.getHeight()-vi.bottom)) { 2646 scrollY += (mTempRect.bottom-scrollY) 2647 - (mView.getHeight()-vi.bottom); 2648 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2649 "Bottom covered; scrollY=" + scrollY); 2650 } 2651 handled = true; 2652 } 2653 } 2654 } 2655 } 2656 2657 if (scrollY != mScrollY) { 2658 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Pan scroll changed: old=" 2659 + mScrollY + " , new=" + scrollY); 2660 if (!immediate && mResizeBuffer == null) { 2661 if (mScroller == null) { 2662 mScroller = new Scroller(mView.getContext()); 2663 } 2664 mScroller.startScroll(0, mScrollY, 0, scrollY-mScrollY); 2665 } else if (mScroller != null) { 2666 mScroller.abortAnimation(); 2667 } 2668 mScrollY = scrollY; 2669 } 2670 2671 return handled; 2672 } 2673 2674 /** 2675 * @hide 2676 */ 2677 public View getAccessibilityFocusedHost() { 2678 return mAccessibilityFocusedHost; 2679 } 2680 2681 /** 2682 * @hide 2683 */ 2684 public AccessibilityNodeInfo getAccessibilityFocusedVirtualView() { 2685 return mAccessibilityFocusedVirtualView; 2686 } 2687 2688 void setAccessibilityFocus(View view, AccessibilityNodeInfo node) { 2689 // If we have a virtual view with accessibility focus we need 2690 // to clear the focus and invalidate the virtual view bounds. 2691 if (mAccessibilityFocusedVirtualView != null) { 2692 2693 AccessibilityNodeInfo focusNode = mAccessibilityFocusedVirtualView; 2694 View focusHost = mAccessibilityFocusedHost; 2695 2696 // Wipe the state of the current accessibility focus since 2697 // the call into the provider to clear accessibility focus 2698 // will fire an accessibility event which will end up calling 2699 // this method and we want to have clean state when this 2700 // invocation happens. 2701 mAccessibilityFocusedHost = null; 2702 mAccessibilityFocusedVirtualView = null; 2703 2704 // Clear accessibility focus on the host after clearing state since 2705 // this method may be reentrant. 2706 focusHost.clearAccessibilityFocusNoCallbacks(); 2707 2708 AccessibilityNodeProvider provider = focusHost.getAccessibilityNodeProvider(); 2709 if (provider != null) { 2710 // Invalidate the area of the cleared accessibility focus. 2711 focusNode.getBoundsInParent(mTempRect); 2712 focusHost.invalidate(mTempRect); 2713 // Clear accessibility focus in the virtual node. 2714 final int virtualNodeId = AccessibilityNodeInfo.getVirtualDescendantId( 2715 focusNode.getSourceNodeId()); 2716 provider.performAction(virtualNodeId, 2717 AccessibilityNodeInfo.ACTION_CLEAR_ACCESSIBILITY_FOCUS, null); 2718 } 2719 focusNode.recycle(); 2720 } 2721 if (mAccessibilityFocusedHost != null) { 2722 // Clear accessibility focus in the view. 2723 mAccessibilityFocusedHost.clearAccessibilityFocusNoCallbacks(); 2724 } 2725 2726 // Set the new focus host and node. 2727 mAccessibilityFocusedHost = view; 2728 mAccessibilityFocusedVirtualView = node; 2729 } 2730 2731 public void requestChildFocus(View child, View focused) { 2732 if (DEBUG_INPUT_RESIZE) { 2733 Log.v(TAG, "Request child focus: focus now " + focused); 2734 } 2735 checkThread(); 2736 scheduleTraversals(); 2737 } 2738 2739 public void clearChildFocus(View child) { 2740 if (DEBUG_INPUT_RESIZE) { 2741 Log.v(TAG, "Clearing child focus"); 2742 } 2743 checkThread(); 2744 scheduleTraversals(); 2745 } 2746 2747 @Override 2748 public ViewParent getParentForAccessibility() { 2749 return null; 2750 } 2751 2752 public void focusableViewAvailable(View v) { 2753 checkThread(); 2754 if (mView != null) { 2755 if (!mView.hasFocus()) { 2756 v.requestFocus(); 2757 } else { 2758 // the one case where will transfer focus away from the current one 2759 // is if the current view is a view group that prefers to give focus 2760 // to its children first AND the view is a descendant of it. 2761 View focused = mView.findFocus(); 2762 if (focused instanceof ViewGroup) { 2763 ViewGroup group = (ViewGroup) focused; 2764 if (group.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 2765 && isViewDescendantOf(v, focused)) { 2766 v.requestFocus(); 2767 } 2768 } 2769 } 2770 } 2771 } 2772 2773 public void recomputeViewAttributes(View child) { 2774 checkThread(); 2775 if (mView == child) { 2776 mAttachInfo.mRecomputeGlobalAttributes = true; 2777 if (!mWillDrawSoon) { 2778 scheduleTraversals(); 2779 } 2780 } 2781 } 2782 2783 void dispatchDetachedFromWindow() { 2784 if (mView != null && mView.mAttachInfo != null) { 2785 if (mAttachInfo.mHardwareRenderer != null && 2786 mAttachInfo.mHardwareRenderer.isEnabled()) { 2787 mAttachInfo.mHardwareRenderer.validate(); 2788 } 2789 mAttachInfo.mTreeObserver.dispatchOnWindowAttachedChange(false); 2790 mView.dispatchDetachedFromWindow(); 2791 } 2792 2793 mAccessibilityInteractionConnectionManager.ensureNoConnection(); 2794 mAccessibilityManager.removeAccessibilityStateChangeListener( 2795 mAccessibilityInteractionConnectionManager); 2796 removeSendWindowContentChangedCallback(); 2797 2798 destroyHardwareRenderer(); 2799 2800 setAccessibilityFocus(null, null); 2801 2802 if (mView != null) { 2803 mView.assignParent(null); 2804 } 2805 mView = null; 2806 mAttachInfo.mRootView = null; 2807 mAttachInfo.mSurface = null; 2808 2809 mSurface.release(); 2810 2811 if (mInputQueueCallback != null && mInputQueue != null) { 2812 mInputQueueCallback.onInputQueueDestroyed(mInputQueue); 2813 mInputQueue.dispose(); 2814 mInputQueueCallback = null; 2815 mInputQueue = null; 2816 } 2817 if (mInputEventReceiver != null) { 2818 mInputEventReceiver.dispose(); 2819 mInputEventReceiver = null; 2820 } 2821 try { 2822 mWindowSession.remove(mWindow); 2823 } catch (RemoteException e) { 2824 } 2825 2826 // Dispose the input channel after removing the window so the Window Manager 2827 // doesn't interpret the input channel being closed as an abnormal termination. 2828 if (mInputChannel != null) { 2829 mInputChannel.dispose(); 2830 mInputChannel = null; 2831 } 2832 2833 unscheduleTraversals(); 2834 } 2835 2836 void updateConfiguration(Configuration config, boolean force) { 2837 if (DEBUG_CONFIGURATION) Log.v(TAG, 2838 "Applying new config to window " 2839 + mWindowAttributes.getTitle() 2840 + ": " + config); 2841 2842 CompatibilityInfo ci = mCompatibilityInfo.getIfNeeded(); 2843 if (ci != null) { 2844 config = new Configuration(config); 2845 ci.applyToConfiguration(mNoncompatDensity, config); 2846 } 2847 2848 synchronized (sConfigCallbacks) { 2849 for (int i=sConfigCallbacks.size()-1; i>=0; i--) { 2850 sConfigCallbacks.get(i).onConfigurationChanged(config); 2851 } 2852 } 2853 if (mView != null) { 2854 // At this point the resources have been updated to 2855 // have the most recent config, whatever that is. Use 2856 // the one in them which may be newer. 2857 config = mView.getResources().getConfiguration(); 2858 if (force || mLastConfiguration.diff(config) != 0) { 2859 final int lastLayoutDirection = mLastConfiguration.getLayoutDirection(); 2860 final int currentLayoutDirection = config.getLayoutDirection(); 2861 mLastConfiguration.setTo(config); 2862 if (lastLayoutDirection != currentLayoutDirection && 2863 mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 2864 mView.setLayoutDirection(currentLayoutDirection); 2865 } 2866 mView.dispatchConfigurationChanged(config); 2867 } 2868 } 2869 } 2870 2871 /** 2872 * Return true if child is an ancestor of parent, (or equal to the parent). 2873 */ 2874 public static boolean isViewDescendantOf(View child, View parent) { 2875 if (child == parent) { 2876 return true; 2877 } 2878 2879 final ViewParent theParent = child.getParent(); 2880 return (theParent instanceof ViewGroup) && isViewDescendantOf((View) theParent, parent); 2881 } 2882 2883 private static void forceLayout(View view) { 2884 view.forceLayout(); 2885 if (view instanceof ViewGroup) { 2886 ViewGroup group = (ViewGroup) view; 2887 final int count = group.getChildCount(); 2888 for (int i = 0; i < count; i++) { 2889 forceLayout(group.getChildAt(i)); 2890 } 2891 } 2892 } 2893 2894 private final static int MSG_INVALIDATE = 1; 2895 private final static int MSG_INVALIDATE_RECT = 2; 2896 private final static int MSG_DIE = 3; 2897 private final static int MSG_RESIZED = 4; 2898 private final static int MSG_RESIZED_REPORT = 5; 2899 private final static int MSG_WINDOW_FOCUS_CHANGED = 6; 2900 private final static int MSG_DISPATCH_KEY = 7; 2901 private final static int MSG_DISPATCH_APP_VISIBILITY = 8; 2902 private final static int MSG_DISPATCH_GET_NEW_SURFACE = 9; 2903 private final static int MSG_DISPATCH_KEY_FROM_IME = 11; 2904 private final static int MSG_FINISH_INPUT_CONNECTION = 12; 2905 private final static int MSG_CHECK_FOCUS = 13; 2906 private final static int MSG_CLOSE_SYSTEM_DIALOGS = 14; 2907 private final static int MSG_DISPATCH_DRAG_EVENT = 15; 2908 private final static int MSG_DISPATCH_DRAG_LOCATION_EVENT = 16; 2909 private final static int MSG_DISPATCH_SYSTEM_UI_VISIBILITY = 17; 2910 private final static int MSG_UPDATE_CONFIGURATION = 18; 2911 private final static int MSG_PROCESS_INPUT_EVENTS = 19; 2912 private final static int MSG_DISPATCH_SCREEN_STATE = 20; 2913 private final static int MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST = 21; 2914 private final static int MSG_DISPATCH_DONE_ANIMATING = 22; 2915 private final static int MSG_INVALIDATE_WORLD = 23; 2916 private final static int MSG_WINDOW_MOVED = 24; 2917 private final static int MSG_FLUSH_LAYER_UPDATES = 25; 2918 2919 final class ViewRootHandler extends Handler { 2920 @Override 2921 public String getMessageName(Message message) { 2922 switch (message.what) { 2923 case MSG_INVALIDATE: 2924 return "MSG_INVALIDATE"; 2925 case MSG_INVALIDATE_RECT: 2926 return "MSG_INVALIDATE_RECT"; 2927 case MSG_DIE: 2928 return "MSG_DIE"; 2929 case MSG_RESIZED: 2930 return "MSG_RESIZED"; 2931 case MSG_RESIZED_REPORT: 2932 return "MSG_RESIZED_REPORT"; 2933 case MSG_WINDOW_FOCUS_CHANGED: 2934 return "MSG_WINDOW_FOCUS_CHANGED"; 2935 case MSG_DISPATCH_KEY: 2936 return "MSG_DISPATCH_KEY"; 2937 case MSG_DISPATCH_APP_VISIBILITY: 2938 return "MSG_DISPATCH_APP_VISIBILITY"; 2939 case MSG_DISPATCH_GET_NEW_SURFACE: 2940 return "MSG_DISPATCH_GET_NEW_SURFACE"; 2941 case MSG_DISPATCH_KEY_FROM_IME: 2942 return "MSG_DISPATCH_KEY_FROM_IME"; 2943 case MSG_FINISH_INPUT_CONNECTION: 2944 return "MSG_FINISH_INPUT_CONNECTION"; 2945 case MSG_CHECK_FOCUS: 2946 return "MSG_CHECK_FOCUS"; 2947 case MSG_CLOSE_SYSTEM_DIALOGS: 2948 return "MSG_CLOSE_SYSTEM_DIALOGS"; 2949 case MSG_DISPATCH_DRAG_EVENT: 2950 return "MSG_DISPATCH_DRAG_EVENT"; 2951 case MSG_DISPATCH_DRAG_LOCATION_EVENT: 2952 return "MSG_DISPATCH_DRAG_LOCATION_EVENT"; 2953 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: 2954 return "MSG_DISPATCH_SYSTEM_UI_VISIBILITY"; 2955 case MSG_UPDATE_CONFIGURATION: 2956 return "MSG_UPDATE_CONFIGURATION"; 2957 case MSG_PROCESS_INPUT_EVENTS: 2958 return "MSG_PROCESS_INPUT_EVENTS"; 2959 case MSG_DISPATCH_SCREEN_STATE: 2960 return "MSG_DISPATCH_SCREEN_STATE"; 2961 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: 2962 return "MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST"; 2963 case MSG_DISPATCH_DONE_ANIMATING: 2964 return "MSG_DISPATCH_DONE_ANIMATING"; 2965 case MSG_WINDOW_MOVED: 2966 return "MSG_WINDOW_MOVED"; 2967 case MSG_FLUSH_LAYER_UPDATES: 2968 return "MSG_FLUSH_LAYER_UPDATES"; 2969 } 2970 return super.getMessageName(message); 2971 } 2972 2973 @Override 2974 public void handleMessage(Message msg) { 2975 switch (msg.what) { 2976 case MSG_INVALIDATE: 2977 ((View) msg.obj).invalidate(); 2978 break; 2979 case MSG_INVALIDATE_RECT: 2980 final View.AttachInfo.InvalidateInfo info = (View.AttachInfo.InvalidateInfo) msg.obj; 2981 info.target.invalidate(info.left, info.top, info.right, info.bottom); 2982 info.recycle(); 2983 break; 2984 case MSG_PROCESS_INPUT_EVENTS: 2985 mProcessInputEventsScheduled = false; 2986 doProcessInputEvents(); 2987 break; 2988 case MSG_DISPATCH_APP_VISIBILITY: 2989 handleAppVisibility(msg.arg1 != 0); 2990 break; 2991 case MSG_DISPATCH_GET_NEW_SURFACE: 2992 handleGetNewSurface(); 2993 break; 2994 case MSG_RESIZED: { 2995 // Recycled in the fall through... 2996 SomeArgs args = (SomeArgs) msg.obj; 2997 if (mWinFrame.equals(args.arg1) 2998 && mPendingOverscanInsets.equals(args.arg5) 2999 && mPendingContentInsets.equals(args.arg2) 3000 && mPendingVisibleInsets.equals(args.arg3) 3001 && args.arg4 == null) { 3002 break; 3003 } 3004 } // fall through... 3005 case MSG_RESIZED_REPORT: 3006 if (mAdded) { 3007 SomeArgs args = (SomeArgs) msg.obj; 3008 3009 Configuration config = (Configuration) args.arg4; 3010 if (config != null) { 3011 updateConfiguration(config, false); 3012 } 3013 3014 mWinFrame.set((Rect) args.arg1); 3015 mPendingOverscanInsets.set((Rect) args.arg5); 3016 mPendingContentInsets.set((Rect) args.arg2); 3017 mPendingVisibleInsets.set((Rect) args.arg3); 3018 3019 args.recycle(); 3020 3021 if (msg.what == MSG_RESIZED_REPORT) { 3022 mReportNextDraw = true; 3023 } 3024 3025 if (mView != null) { 3026 forceLayout(mView); 3027 } 3028 3029 requestLayout(); 3030 } 3031 break; 3032 case MSG_WINDOW_MOVED: 3033 if (mAdded) { 3034 final int w = mWinFrame.width(); 3035 final int h = mWinFrame.height(); 3036 final int l = msg.arg1; 3037 final int t = msg.arg2; 3038 mWinFrame.left = l; 3039 mWinFrame.right = l + w; 3040 mWinFrame.top = t; 3041 mWinFrame.bottom = t + h; 3042 3043 if (mView != null) { 3044 forceLayout(mView); 3045 } 3046 requestLayout(); 3047 } 3048 break; 3049 case MSG_WINDOW_FOCUS_CHANGED: { 3050 if (mAdded) { 3051 boolean hasWindowFocus = msg.arg1 != 0; 3052 mAttachInfo.mHasWindowFocus = hasWindowFocus; 3053 3054 profileRendering(hasWindowFocus); 3055 3056 if (hasWindowFocus) { 3057 boolean inTouchMode = msg.arg2 != 0; 3058 ensureTouchModeLocally(inTouchMode); 3059 3060 if (mAttachInfo.mHardwareRenderer != null && mSurface.isValid()){ 3061 mFullRedrawNeeded = true; 3062 try { 3063 mAttachInfo.mHardwareRenderer.initializeIfNeeded( 3064 mWidth, mHeight, mHolder.getSurface()); 3065 } catch (Surface.OutOfResourcesException e) { 3066 Log.e(TAG, "OutOfResourcesException locking surface", e); 3067 try { 3068 if (!mWindowSession.outOfMemory(mWindow)) { 3069 Slog.w(TAG, "No processes killed for memory; killing self"); 3070 Process.killProcess(Process.myPid()); 3071 } 3072 } catch (RemoteException ex) { 3073 } 3074 // Retry in a bit. 3075 sendMessageDelayed(obtainMessage(msg.what, msg.arg1, msg.arg2), 500); 3076 return; 3077 } 3078 } 3079 } 3080 3081 mLastWasImTarget = WindowManager.LayoutParams 3082 .mayUseInputMethod(mWindowAttributes.flags); 3083 3084 InputMethodManager imm = InputMethodManager.peekInstance(); 3085 if (mView != null) { 3086 if (hasWindowFocus && imm != null && mLastWasImTarget) { 3087 imm.startGettingWindowFocus(mView); 3088 } 3089 mAttachInfo.mKeyDispatchState.reset(); 3090 mView.dispatchWindowFocusChanged(hasWindowFocus); 3091 mAttachInfo.mTreeObserver.dispatchOnWindowFocusChange(hasWindowFocus); 3092 } 3093 3094 // Note: must be done after the focus change callbacks, 3095 // so all of the view state is set up correctly. 3096 if (hasWindowFocus) { 3097 if (imm != null && mLastWasImTarget) { 3098 imm.onWindowFocus(mView, mView.findFocus(), 3099 mWindowAttributes.softInputMode, 3100 !mHasHadWindowFocus, mWindowAttributes.flags); 3101 } 3102 // Clear the forward bit. We can just do this directly, since 3103 // the window manager doesn't care about it. 3104 mWindowAttributes.softInputMode &= 3105 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3106 ((WindowManager.LayoutParams)mView.getLayoutParams()) 3107 .softInputMode &= 3108 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3109 mHasHadWindowFocus = true; 3110 } 3111 3112 setAccessibilityFocus(null, null); 3113 3114 if (mView != null && mAccessibilityManager.isEnabled()) { 3115 if (hasWindowFocus) { 3116 mView.sendAccessibilityEvent( 3117 AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 3118 } 3119 } 3120 } 3121 } break; 3122 case MSG_DIE: 3123 doDie(); 3124 break; 3125 case MSG_DISPATCH_KEY: { 3126 KeyEvent event = (KeyEvent)msg.obj; 3127 enqueueInputEvent(event, null, 0, true); 3128 } break; 3129 case MSG_DISPATCH_KEY_FROM_IME: { 3130 if (LOCAL_LOGV) Log.v( 3131 TAG, "Dispatching key " 3132 + msg.obj + " from IME to " + mView); 3133 KeyEvent event = (KeyEvent)msg.obj; 3134 if ((event.getFlags()&KeyEvent.FLAG_FROM_SYSTEM) != 0) { 3135 // The IME is trying to say this event is from the 3136 // system! Bad bad bad! 3137 //noinspection UnusedAssignment 3138 event = KeyEvent.changeFlags(event, event.getFlags() & ~KeyEvent.FLAG_FROM_SYSTEM); 3139 } 3140 enqueueInputEvent(event, null, QueuedInputEvent.FLAG_DELIVER_POST_IME, true); 3141 } break; 3142 case MSG_FINISH_INPUT_CONNECTION: { 3143 InputMethodManager imm = InputMethodManager.peekInstance(); 3144 if (imm != null) { 3145 imm.reportFinishInputConnection((InputConnection)msg.obj); 3146 } 3147 } break; 3148 case MSG_CHECK_FOCUS: { 3149 InputMethodManager imm = InputMethodManager.peekInstance(); 3150 if (imm != null) { 3151 imm.checkFocus(); 3152 } 3153 } break; 3154 case MSG_CLOSE_SYSTEM_DIALOGS: { 3155 if (mView != null) { 3156 mView.onCloseSystemDialogs((String)msg.obj); 3157 } 3158 } break; 3159 case MSG_DISPATCH_DRAG_EVENT: 3160 case MSG_DISPATCH_DRAG_LOCATION_EVENT: { 3161 DragEvent event = (DragEvent)msg.obj; 3162 event.mLocalState = mLocalDragState; // only present when this app called startDrag() 3163 handleDragEvent(event); 3164 } break; 3165 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: { 3166 handleDispatchSystemUiVisibilityChanged((SystemUiVisibilityInfo) msg.obj); 3167 } break; 3168 case MSG_UPDATE_CONFIGURATION: { 3169 Configuration config = (Configuration)msg.obj; 3170 if (config.isOtherSeqNewer(mLastConfiguration)) { 3171 config = mLastConfiguration; 3172 } 3173 updateConfiguration(config, false); 3174 } break; 3175 case MSG_DISPATCH_SCREEN_STATE: { 3176 if (mView != null) { 3177 handleScreenStateChange(msg.arg1 == 1); 3178 } 3179 } break; 3180 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: { 3181 setAccessibilityFocus(null, null); 3182 } break; 3183 case MSG_DISPATCH_DONE_ANIMATING: { 3184 handleDispatchDoneAnimating(); 3185 } break; 3186 case MSG_INVALIDATE_WORLD: { 3187 if (mView != null) { 3188 invalidateWorld(mView); 3189 } 3190 } break; 3191 case MSG_FLUSH_LAYER_UPDATES: { 3192 flushHardwareLayerUpdates(); 3193 } break; 3194 } 3195 } 3196 } 3197 3198 final ViewRootHandler mHandler = new ViewRootHandler(); 3199 3200 /** 3201 * Something in the current window tells us we need to change the touch mode. For 3202 * example, we are not in touch mode, and the user touches the screen. 3203 * 3204 * If the touch mode has changed, tell the window manager, and handle it locally. 3205 * 3206 * @param inTouchMode Whether we want to be in touch mode. 3207 * @return True if the touch mode changed and focus changed was changed as a result 3208 */ 3209 boolean ensureTouchMode(boolean inTouchMode) { 3210 if (DBG) Log.d("touchmode", "ensureTouchMode(" + inTouchMode + "), current " 3211 + "touch mode is " + mAttachInfo.mInTouchMode); 3212 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3213 3214 // tell the window manager 3215 try { 3216 mWindowSession.setInTouchMode(inTouchMode); 3217 } catch (RemoteException e) { 3218 throw new RuntimeException(e); 3219 } 3220 3221 // handle the change 3222 return ensureTouchModeLocally(inTouchMode); 3223 } 3224 3225 /** 3226 * Ensure that the touch mode for this window is set, and if it is changing, 3227 * take the appropriate action. 3228 * @param inTouchMode Whether we want to be in touch mode. 3229 * @return True if the touch mode changed and focus changed was changed as a result 3230 */ 3231 private boolean ensureTouchModeLocally(boolean inTouchMode) { 3232 if (DBG) Log.d("touchmode", "ensureTouchModeLocally(" + inTouchMode + "), current " 3233 + "touch mode is " + mAttachInfo.mInTouchMode); 3234 3235 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3236 3237 mAttachInfo.mInTouchMode = inTouchMode; 3238 mAttachInfo.mTreeObserver.dispatchOnTouchModeChanged(inTouchMode); 3239 3240 return (inTouchMode) ? enterTouchMode() : leaveTouchMode(); 3241 } 3242 3243 private boolean enterTouchMode() { 3244 if (mView != null) { 3245 if (mView.hasFocus()) { 3246 // note: not relying on mFocusedView here because this could 3247 // be when the window is first being added, and mFocused isn't 3248 // set yet. 3249 final View focused = mView.findFocus(); 3250 if (focused != null && !focused.isFocusableInTouchMode()) { 3251 final ViewGroup ancestorToTakeFocus = 3252 findAncestorToTakeFocusInTouchMode(focused); 3253 if (ancestorToTakeFocus != null) { 3254 // there is an ancestor that wants focus after its descendants that 3255 // is focusable in touch mode.. give it focus 3256 return ancestorToTakeFocus.requestFocus(); 3257 } else { 3258 // nothing appropriate to have focus in touch mode, clear it out 3259 focused.unFocus(); 3260 return true; 3261 } 3262 } 3263 } 3264 } 3265 return false; 3266 } 3267 3268 /** 3269 * Find an ancestor of focused that wants focus after its descendants and is 3270 * focusable in touch mode. 3271 * @param focused The currently focused view. 3272 * @return An appropriate view, or null if no such view exists. 3273 */ 3274 private static ViewGroup findAncestorToTakeFocusInTouchMode(View focused) { 3275 ViewParent parent = focused.getParent(); 3276 while (parent instanceof ViewGroup) { 3277 final ViewGroup vgParent = (ViewGroup) parent; 3278 if (vgParent.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 3279 && vgParent.isFocusableInTouchMode()) { 3280 return vgParent; 3281 } 3282 if (vgParent.isRootNamespace()) { 3283 return null; 3284 } else { 3285 parent = vgParent.getParent(); 3286 } 3287 } 3288 return null; 3289 } 3290 3291 private boolean leaveTouchMode() { 3292 if (mView != null) { 3293 if (mView.hasFocus()) { 3294 View focusedView = mView.findFocus(); 3295 if (!(focusedView instanceof ViewGroup)) { 3296 // some view has focus, let it keep it 3297 return false; 3298 } else if (((ViewGroup) focusedView).getDescendantFocusability() != 3299 ViewGroup.FOCUS_AFTER_DESCENDANTS) { 3300 // some view group has focus, and doesn't prefer its children 3301 // over itself for focus, so let them keep it. 3302 return false; 3303 } 3304 } 3305 3306 // find the best view to give focus to in this brave new non-touch-mode 3307 // world 3308 final View focused = focusSearch(null, View.FOCUS_DOWN); 3309 if (focused != null) { 3310 return focused.requestFocus(View.FOCUS_DOWN); 3311 } 3312 } 3313 return false; 3314 } 3315 3316 /** 3317 * Base class for implementing a stage in the chain of responsibility 3318 * for processing input events. 3319 * <p> 3320 * Events are delivered to the stage by the {@link #deliver} method. The stage 3321 * then has the choice of finishing the event or forwarding it to the next stage. 3322 * </p> 3323 */ 3324 abstract class InputStage { 3325 private final InputStage mNext; 3326 3327 protected static final int FORWARD = 0; 3328 protected static final int FINISH_HANDLED = 1; 3329 protected static final int FINISH_NOT_HANDLED = 2; 3330 3331 /** 3332 * Creates an input stage. 3333 * @param next The next stage to which events should be forwarded. 3334 */ 3335 public InputStage(InputStage next) { 3336 mNext = next; 3337 } 3338 3339 /** 3340 * Delivers an event to be processed. 3341 */ 3342 public final void deliver(QueuedInputEvent q) { 3343 if ((q.mFlags & QueuedInputEvent.FLAG_FINISHED) != 0) { 3344 forward(q); 3345 } else if (mView == null || !mAdded) { 3346 Slog.w(TAG, "Dropping event due to root view being removed: " + q.mEvent); 3347 finish(q, false); 3348 } else if (!mAttachInfo.mHasWindowFocus && 3349 !q.mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER) && 3350 !isTerminalInputEvent(q.mEvent)) { 3351 // If this is a focused event and the window doesn't currently have input focus, 3352 // then drop this event. This could be an event that came back from the previous 3353 // stage but the window has lost focus in the meantime. 3354 Slog.w(TAG, "Dropping event due to no window focus: " + q.mEvent); 3355 finish(q, false); 3356 } else { 3357 apply(q, onProcess(q)); 3358 } 3359 } 3360 3361 /** 3362 * Marks the the input event as finished then forwards it to the next stage. 3363 */ 3364 protected void finish(QueuedInputEvent q, boolean handled) { 3365 q.mFlags |= QueuedInputEvent.FLAG_FINISHED; 3366 if (handled) { 3367 q.mFlags |= QueuedInputEvent.FLAG_FINISHED_HANDLED; 3368 } 3369 forward(q); 3370 } 3371 3372 /** 3373 * Forwards the event to the next stage. 3374 */ 3375 protected void forward(QueuedInputEvent q) { 3376 onDeliverToNext(q); 3377 } 3378 3379 /** 3380 * Applies a result code from {@link #onProcess} to the specified event. 3381 */ 3382 protected void apply(QueuedInputEvent q, int result) { 3383 if (result == FORWARD) { 3384 forward(q); 3385 } else if (result == FINISH_HANDLED) { 3386 finish(q, true); 3387 } else if (result == FINISH_NOT_HANDLED) { 3388 finish(q, false); 3389 } else { 3390 throw new IllegalArgumentException("Invalid result: " + result); 3391 } 3392 } 3393 3394 /** 3395 * Called when an event is ready to be processed. 3396 * @return A result code indicating how the event was handled. 3397 */ 3398 protected int onProcess(QueuedInputEvent q) { 3399 return FORWARD; 3400 } 3401 3402 /** 3403 * Called when an event is being delivered to the next stage. 3404 */ 3405 protected void onDeliverToNext(QueuedInputEvent q) { 3406 if (mNext != null) { 3407 mNext.deliver(q); 3408 } else { 3409 finishInputEvent(q); 3410 } 3411 } 3412 } 3413 3414 /** 3415 * Base class for implementing an input pipeline stage that supports 3416 * asynchronous and out-of-order processing of input events. 3417 * <p> 3418 * In addition to what a normal input stage can do, an asynchronous 3419 * input stage may also defer an input event that has been delivered to it 3420 * and finish or forward it later. 3421 * </p> 3422 */ 3423 abstract class AsyncInputStage extends InputStage { 3424 private final String mTraceCounter; 3425 3426 private QueuedInputEvent mQueueHead; 3427 private QueuedInputEvent mQueueTail; 3428 private int mQueueLength; 3429 3430 protected static final int DEFER = 3; 3431 3432 /** 3433 * Creates an asynchronous input stage. 3434 * @param next The next stage to which events should be forwarded. 3435 * @param traceCounter The name of a counter to record the size of 3436 * the queue of pending events. 3437 */ 3438 public AsyncInputStage(InputStage next, String traceCounter) { 3439 super(next); 3440 mTraceCounter = traceCounter; 3441 } 3442 3443 /** 3444 * Marks the event as deferred, which is to say that it will be handled 3445 * asynchronously. The caller is responsible for calling {@link #forward} 3446 * or {@link #finish} later when it is done handling the event. 3447 */ 3448 protected void defer(QueuedInputEvent q) { 3449 q.mFlags |= QueuedInputEvent.FLAG_DEFERRED; 3450 enqueue(q); 3451 } 3452 3453 @Override 3454 protected void forward(QueuedInputEvent q) { 3455 // Clear the deferred flag. 3456 q.mFlags &= ~QueuedInputEvent.FLAG_DEFERRED; 3457 3458 // Fast path if the queue is empty. 3459 QueuedInputEvent curr = mQueueHead; 3460 if (curr == null) { 3461 super.forward(q); 3462 return; 3463 } 3464 3465 // Determine whether the event must be serialized behind any others 3466 // before it can be delivered to the next stage. This is done because 3467 // deferred events might be handled out of order by the stage. 3468 final int deviceId = q.mEvent.getDeviceId(); 3469 QueuedInputEvent prev = null; 3470 boolean blocked = false; 3471 while (curr != null && curr != q) { 3472 if (!blocked && deviceId == curr.mEvent.getDeviceId()) { 3473 blocked = true; 3474 } 3475 prev = curr; 3476 curr = curr.mNext; 3477 } 3478 3479 // If the event is blocked, then leave it in the queue to be delivered later. 3480 // Note that the event might not yet be in the queue if it was not previously 3481 // deferred so we will enqueue it if needed. 3482 if (blocked) { 3483 if (curr == null) { 3484 enqueue(q); 3485 } 3486 return; 3487 } 3488 3489 // The event is not blocked. Deliver it immediately. 3490 if (curr != null) { 3491 curr = curr.mNext; 3492 dequeue(q, prev); 3493 } 3494 super.forward(q); 3495 3496 // Dequeuing this event may have unblocked successors. Deliver them. 3497 while (curr != null) { 3498 if (deviceId == curr.mEvent.getDeviceId()) { 3499 if ((curr.mFlags & QueuedInputEvent.FLAG_DEFERRED) != 0) { 3500 break; 3501 } 3502 QueuedInputEvent next = curr.mNext; 3503 dequeue(curr, prev); 3504 super.forward(curr); 3505 curr = next; 3506 } else { 3507 prev = curr; 3508 curr = curr.mNext; 3509 } 3510 } 3511 } 3512 3513 @Override 3514 protected void apply(QueuedInputEvent q, int result) { 3515 if (result == DEFER) { 3516 defer(q); 3517 } else { 3518 super.apply(q, result); 3519 } 3520 } 3521 3522 private void enqueue(QueuedInputEvent q) { 3523 if (mQueueTail == null) { 3524 mQueueHead = q; 3525 mQueueTail = q; 3526 } else { 3527 mQueueTail.mNext = q; 3528 mQueueTail = q; 3529 } 3530 3531 mQueueLength += 1; 3532 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 3533 } 3534 3535 private void dequeue(QueuedInputEvent q, QueuedInputEvent prev) { 3536 if (prev == null) { 3537 mQueueHead = q.mNext; 3538 } else { 3539 prev.mNext = q.mNext; 3540 } 3541 if (mQueueTail == q) { 3542 mQueueTail = prev; 3543 } 3544 q.mNext = null; 3545 3546 mQueueLength -= 1; 3547 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 3548 } 3549 } 3550 3551 /** 3552 * Delivers pre-ime input events to a native activity. 3553 * Does not support pointer events. 3554 */ 3555 final class NativePreImeInputStage extends AsyncInputStage 3556 implements InputQueue.FinishedInputEventCallback { 3557 public NativePreImeInputStage(InputStage next, String traceCounter) { 3558 super(next, traceCounter); 3559 } 3560 3561 @Override 3562 protected int onProcess(QueuedInputEvent q) { 3563 if (mInputQueue != null && q.mEvent instanceof KeyEvent) { 3564 mInputQueue.sendInputEvent(q.mEvent, q, true, this); 3565 return DEFER; 3566 } 3567 return FORWARD; 3568 } 3569 3570 @Override 3571 public void onFinishedInputEvent(Object token, boolean handled) { 3572 QueuedInputEvent q = (QueuedInputEvent)token; 3573 if (handled) { 3574 finish(q, true); 3575 return; 3576 } 3577 forward(q); 3578 } 3579 } 3580 3581 /** 3582 * Delivers pre-ime input events to the view hierarchy. 3583 * Does not support pointer events. 3584 */ 3585 final class ViewPreImeInputStage extends InputStage { 3586 public ViewPreImeInputStage(InputStage next) { 3587 super(next); 3588 } 3589 3590 @Override 3591 protected int onProcess(QueuedInputEvent q) { 3592 if (q.mEvent instanceof KeyEvent) { 3593 return processKeyEvent(q); 3594 } 3595 return FORWARD; 3596 } 3597 3598 private int processKeyEvent(QueuedInputEvent q) { 3599 final KeyEvent event = (KeyEvent)q.mEvent; 3600 if (mView.dispatchKeyEventPreIme(event)) { 3601 return FINISH_HANDLED; 3602 } 3603 return FORWARD; 3604 } 3605 } 3606 3607 /** 3608 * Delivers input events to the ime. 3609 * Does not support pointer events. 3610 */ 3611 final class ImeInputStage extends AsyncInputStage 3612 implements InputMethodManager.FinishedInputEventCallback { 3613 public ImeInputStage(InputStage next, String traceCounter) { 3614 super(next, traceCounter); 3615 } 3616 3617 @Override 3618 protected int onProcess(QueuedInputEvent q) { 3619 if (mLastWasImTarget) { 3620 InputMethodManager imm = InputMethodManager.peekInstance(); 3621 if (imm != null) { 3622 final InputEvent event = q.mEvent; 3623 if (DEBUG_IMF) Log.v(TAG, "Sending input event to IME: " + event); 3624 int result = imm.dispatchInputEvent(event, q, this, mHandler); 3625 if (result == InputMethodManager.DISPATCH_HANDLED) { 3626 return FINISH_HANDLED; 3627 } else if (result == InputMethodManager.DISPATCH_NOT_HANDLED) { 3628 return FINISH_NOT_HANDLED; 3629 } else { 3630 return DEFER; // callback will be invoked later 3631 } 3632 } 3633 } 3634 return FORWARD; 3635 } 3636 3637 @Override 3638 public void onFinishedInputEvent(Object token, boolean handled) { 3639 QueuedInputEvent q = (QueuedInputEvent)token; 3640 if (handled) { 3641 finish(q, true); 3642 return; 3643 } 3644 forward(q); 3645 } 3646 } 3647 3648 /** 3649 * Performs early processing of post-ime input events. 3650 */ 3651 final class EarlyPostImeInputStage extends InputStage { 3652 public EarlyPostImeInputStage(InputStage next) { 3653 super(next); 3654 } 3655 3656 @Override 3657 protected int onProcess(QueuedInputEvent q) { 3658 if (q.mEvent instanceof KeyEvent) { 3659 return processKeyEvent(q); 3660 } else { 3661 final int source = q.mEvent.getSource(); 3662 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 3663 return processPointerEvent(q); 3664 } 3665 } 3666 return FORWARD; 3667 } 3668 3669 private int processKeyEvent(QueuedInputEvent q) { 3670 final KeyEvent event = (KeyEvent)q.mEvent; 3671 3672 // If the key's purpose is to exit touch mode then we consume it 3673 // and consider it handled. 3674 if (checkForLeavingTouchModeAndConsume(event)) { 3675 return FINISH_HANDLED; 3676 } 3677 3678 // Make sure the fallback event policy sees all keys that will be 3679 // delivered to the view hierarchy. 3680 mFallbackEventHandler.preDispatchKeyEvent(event); 3681 return FORWARD; 3682 } 3683 3684 private int processPointerEvent(QueuedInputEvent q) { 3685 final MotionEvent event = (MotionEvent)q.mEvent; 3686 3687 // Translate the pointer event for compatibility, if needed. 3688 if (mTranslator != null) { 3689 mTranslator.translateEventInScreenToAppWindow(event); 3690 } 3691 3692 // Enter touch mode on down or scroll. 3693 final int action = event.getAction(); 3694 if (action == MotionEvent.ACTION_DOWN || action == MotionEvent.ACTION_SCROLL) { 3695 ensureTouchMode(true); 3696 } 3697 3698 // Offset the scroll position. 3699 if (mCurScrollY != 0) { 3700 event.offsetLocation(0, mCurScrollY); 3701 } 3702 3703 // Remember the touch position for possible drag-initiation. 3704 if (event.isTouchEvent()) { 3705 mLastTouchPoint.x = event.getRawX(); 3706 mLastTouchPoint.y = event.getRawY(); 3707 } 3708 return FORWARD; 3709 } 3710 } 3711 3712 /** 3713 * Delivers post-ime input events to a native activity. 3714 */ 3715 final class NativePostImeInputStage extends AsyncInputStage 3716 implements InputQueue.FinishedInputEventCallback { 3717 public NativePostImeInputStage(InputStage next, String traceCounter) { 3718 super(next, traceCounter); 3719 } 3720 3721 @Override 3722 protected int onProcess(QueuedInputEvent q) { 3723 if (mInputQueue != null) { 3724 mInputQueue.sendInputEvent(q.mEvent, q, false, this); 3725 return DEFER; 3726 } 3727 return FORWARD; 3728 } 3729 3730 @Override 3731 public void onFinishedInputEvent(Object token, boolean handled) { 3732 QueuedInputEvent q = (QueuedInputEvent)token; 3733 if (handled) { 3734 finish(q, true); 3735 return; 3736 } 3737 forward(q); 3738 } 3739 } 3740 3741 /** 3742 * Delivers post-ime input events to the view hierarchy. 3743 */ 3744 final class ViewPostImeInputStage extends InputStage { 3745 public ViewPostImeInputStage(InputStage next) { 3746 super(next); 3747 } 3748 3749 @Override 3750 protected int onProcess(QueuedInputEvent q) { 3751 if (q.mEvent instanceof KeyEvent) { 3752 return processKeyEvent(q); 3753 } else { 3754 final int source = q.mEvent.getSource(); 3755 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 3756 return processPointerEvent(q); 3757 } else if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 3758 return processTrackballEvent(q); 3759 } else { 3760 return processGenericMotionEvent(q); 3761 } 3762 } 3763 } 3764 3765 private int processKeyEvent(QueuedInputEvent q) { 3766 final KeyEvent event = (KeyEvent)q.mEvent; 3767 3768 // Deliver the key to the view hierarchy. 3769 if (mView.dispatchKeyEvent(event)) { 3770 return FINISH_HANDLED; 3771 } 3772 3773 // If the Control modifier is held, try to interpret the key as a shortcut. 3774 if (event.getAction() == KeyEvent.ACTION_DOWN 3775 && event.isCtrlPressed() 3776 && event.getRepeatCount() == 0 3777 && !KeyEvent.isModifierKey(event.getKeyCode())) { 3778 if (mView.dispatchKeyShortcutEvent(event)) { 3779 return FINISH_HANDLED; 3780 } 3781 } 3782 3783 // Apply the fallback event policy. 3784 if (mFallbackEventHandler.dispatchKeyEvent(event)) { 3785 return FINISH_HANDLED; 3786 } 3787 3788 // Handle automatic focus changes. 3789 if (event.getAction() == KeyEvent.ACTION_DOWN) { 3790 int direction = 0; 3791 switch (event.getKeyCode()) { 3792 case KeyEvent.KEYCODE_DPAD_LEFT: 3793 if (event.hasNoModifiers()) { 3794 direction = View.FOCUS_LEFT; 3795 } 3796 break; 3797 case KeyEvent.KEYCODE_DPAD_RIGHT: 3798 if (event.hasNoModifiers()) { 3799 direction = View.FOCUS_RIGHT; 3800 } 3801 break; 3802 case KeyEvent.KEYCODE_DPAD_UP: 3803 if (event.hasNoModifiers()) { 3804 direction = View.FOCUS_UP; 3805 } 3806 break; 3807 case KeyEvent.KEYCODE_DPAD_DOWN: 3808 if (event.hasNoModifiers()) { 3809 direction = View.FOCUS_DOWN; 3810 } 3811 break; 3812 case KeyEvent.KEYCODE_TAB: 3813 if (event.hasNoModifiers()) { 3814 direction = View.FOCUS_FORWARD; 3815 } else if (event.hasModifiers(KeyEvent.META_SHIFT_ON)) { 3816 direction = View.FOCUS_BACKWARD; 3817 } 3818 break; 3819 } 3820 if (direction != 0) { 3821 View focused = mView.findFocus(); 3822 if (focused != null) { 3823 View v = focused.focusSearch(direction); 3824 if (v != null && v != focused) { 3825 // do the math the get the interesting rect 3826 // of previous focused into the coord system of 3827 // newly focused view 3828 focused.getFocusedRect(mTempRect); 3829 if (mView instanceof ViewGroup) { 3830 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 3831 focused, mTempRect); 3832 ((ViewGroup) mView).offsetRectIntoDescendantCoords( 3833 v, mTempRect); 3834 } 3835 if (v.requestFocus(direction, mTempRect)) { 3836 playSoundEffect(SoundEffectConstants 3837 .getContantForFocusDirection(direction)); 3838 return FINISH_HANDLED; 3839 } 3840 } 3841 3842 // Give the focused view a last chance to handle the dpad key. 3843 if (mView.dispatchUnhandledMove(focused, direction)) { 3844 return FINISH_HANDLED; 3845 } 3846 } else { 3847 // find the best view to give focus to in this non-touch-mode with no-focus 3848 View v = focusSearch(null, direction); 3849 if (v != null && v.requestFocus(direction)) { 3850 return FINISH_HANDLED; 3851 } 3852 } 3853 } 3854 } 3855 return FORWARD; 3856 } 3857 3858 private int processPointerEvent(QueuedInputEvent q) { 3859 final MotionEvent event = (MotionEvent)q.mEvent; 3860 3861 if (mView.dispatchPointerEvent(event)) { 3862 return FINISH_HANDLED; 3863 } 3864 return FORWARD; 3865 } 3866 3867 private int processTrackballEvent(QueuedInputEvent q) { 3868 final MotionEvent event = (MotionEvent)q.mEvent; 3869 3870 if (mView.dispatchTrackballEvent(event)) { 3871 return FINISH_HANDLED; 3872 } 3873 return FORWARD; 3874 } 3875 3876 private int processGenericMotionEvent(QueuedInputEvent q) { 3877 final MotionEvent event = (MotionEvent)q.mEvent; 3878 3879 // Deliver the event to the view. 3880 if (mView.dispatchGenericMotionEvent(event)) { 3881 return FINISH_HANDLED; 3882 } 3883 return FORWARD; 3884 } 3885 } 3886 3887 /** 3888 * Performs synthesis of new input events from unhandled input events. 3889 */ 3890 final class SyntheticInputStage extends InputStage { 3891 private final SyntheticTrackballHandler mTrackball = new SyntheticTrackballHandler(); 3892 private final SyntheticJoystickHandler mJoystick = new SyntheticJoystickHandler(); 3893 private final SyntheticTouchNavigationHandler mTouchNavigation = 3894 new SyntheticTouchNavigationHandler(); 3895 3896 public SyntheticInputStage() { 3897 super(null); 3898 } 3899 3900 @Override 3901 protected int onProcess(QueuedInputEvent q) { 3902 q.mFlags |= QueuedInputEvent.FLAG_RESYNTHESIZED; 3903 if (q.mEvent instanceof MotionEvent) { 3904 final MotionEvent event = (MotionEvent)q.mEvent; 3905 final int source = event.getSource(); 3906 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 3907 mTrackball.process(event); 3908 return FINISH_HANDLED; 3909 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 3910 mJoystick.process(event); 3911 return FINISH_HANDLED; 3912 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 3913 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 3914 mTouchNavigation.process(event); 3915 return FINISH_HANDLED; 3916 } 3917 } 3918 return FORWARD; 3919 } 3920 3921 @Override 3922 protected void onDeliverToNext(QueuedInputEvent q) { 3923 if ((q.mFlags & QueuedInputEvent.FLAG_RESYNTHESIZED) == 0) { 3924 // Cancel related synthetic events if any prior stage has handled the event. 3925 if (q.mEvent instanceof MotionEvent) { 3926 final MotionEvent event = (MotionEvent)q.mEvent; 3927 final int source = event.getSource(); 3928 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 3929 mTrackball.cancel(event); 3930 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 3931 mJoystick.cancel(event); 3932 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 3933 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 3934 mTouchNavigation.cancel(event); 3935 } 3936 } 3937 } 3938 super.onDeliverToNext(q); 3939 } 3940 } 3941 3942 /** 3943 * Creates dpad events from unhandled trackball movements. 3944 */ 3945 final class SyntheticTrackballHandler { 3946 private final TrackballAxis mX = new TrackballAxis(); 3947 private final TrackballAxis mY = new TrackballAxis(); 3948 private long mLastTime; 3949 3950 public void process(MotionEvent event) { 3951 // Translate the trackball event into DPAD keys and try to deliver those. 3952 long curTime = SystemClock.uptimeMillis(); 3953 if ((mLastTime + MAX_TRACKBALL_DELAY) < curTime) { 3954 // It has been too long since the last movement, 3955 // so restart at the beginning. 3956 mX.reset(0); 3957 mY.reset(0); 3958 mLastTime = curTime; 3959 } 3960 3961 final int action = event.getAction(); 3962 final int metaState = event.getMetaState(); 3963 switch (action) { 3964 case MotionEvent.ACTION_DOWN: 3965 mX.reset(2); 3966 mY.reset(2); 3967 enqueueInputEvent(new KeyEvent(curTime, curTime, 3968 KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 3969 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 3970 InputDevice.SOURCE_KEYBOARD)); 3971 break; 3972 case MotionEvent.ACTION_UP: 3973 mX.reset(2); 3974 mY.reset(2); 3975 enqueueInputEvent(new KeyEvent(curTime, curTime, 3976 KeyEvent.ACTION_UP, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 3977 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 3978 InputDevice.SOURCE_KEYBOARD)); 3979 break; 3980 } 3981 3982 if (DEBUG_TRACKBALL) Log.v(TAG, "TB X=" + mX.position + " step=" 3983 + mX.step + " dir=" + mX.dir + " acc=" + mX.acceleration 3984 + " move=" + event.getX() 3985 + " / Y=" + mY.position + " step=" 3986 + mY.step + " dir=" + mY.dir + " acc=" + mY.acceleration 3987 + " move=" + event.getY()); 3988 final float xOff = mX.collect(event.getX(), event.getEventTime(), "X"); 3989 final float yOff = mY.collect(event.getY(), event.getEventTime(), "Y"); 3990 3991 // Generate DPAD events based on the trackball movement. 3992 // We pick the axis that has moved the most as the direction of 3993 // the DPAD. When we generate DPAD events for one axis, then the 3994 // other axis is reset -- we don't want to perform DPAD jumps due 3995 // to slight movements in the trackball when making major movements 3996 // along the other axis. 3997 int keycode = 0; 3998 int movement = 0; 3999 float accel = 1; 4000 if (xOff > yOff) { 4001 movement = mX.generate(); 4002 if (movement != 0) { 4003 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_RIGHT 4004 : KeyEvent.KEYCODE_DPAD_LEFT; 4005 accel = mX.acceleration; 4006 mY.reset(2); 4007 } 4008 } else if (yOff > 0) { 4009 movement = mY.generate(); 4010 if (movement != 0) { 4011 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_DOWN 4012 : KeyEvent.KEYCODE_DPAD_UP; 4013 accel = mY.acceleration; 4014 mX.reset(2); 4015 } 4016 } 4017 4018 if (keycode != 0) { 4019 if (movement < 0) movement = -movement; 4020 int accelMovement = (int)(movement * accel); 4021 if (DEBUG_TRACKBALL) Log.v(TAG, "Move: movement=" + movement 4022 + " accelMovement=" + accelMovement 4023 + " accel=" + accel); 4024 if (accelMovement > movement) { 4025 if (DEBUG_TRACKBALL) Log.v(TAG, "Delivering fake DPAD: " 4026 + keycode); 4027 movement--; 4028 int repeatCount = accelMovement - movement; 4029 enqueueInputEvent(new KeyEvent(curTime, curTime, 4030 KeyEvent.ACTION_MULTIPLE, keycode, repeatCount, metaState, 4031 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4032 InputDevice.SOURCE_KEYBOARD)); 4033 } 4034 while (movement > 0) { 4035 if (DEBUG_TRACKBALL) Log.v(TAG, "Delivering fake DPAD: " 4036 + keycode); 4037 movement--; 4038 curTime = SystemClock.uptimeMillis(); 4039 enqueueInputEvent(new KeyEvent(curTime, curTime, 4040 KeyEvent.ACTION_DOWN, keycode, 0, metaState, 4041 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4042 InputDevice.SOURCE_KEYBOARD)); 4043 enqueueInputEvent(new KeyEvent(curTime, curTime, 4044 KeyEvent.ACTION_UP, keycode, 0, metaState, 4045 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4046 InputDevice.SOURCE_KEYBOARD)); 4047 } 4048 mLastTime = curTime; 4049 } 4050 } 4051 4052 public void cancel(MotionEvent event) { 4053 mLastTime = Integer.MIN_VALUE; 4054 4055 // If we reach this, we consumed a trackball event. 4056 // Because we will not translate the trackball event into a key event, 4057 // touch mode will not exit, so we exit touch mode here. 4058 if (mView != null && mAdded) { 4059 ensureTouchMode(false); 4060 } 4061 } 4062 } 4063 4064 /** 4065 * Maintains state information for a single trackball axis, generating 4066 * discrete (DPAD) movements based on raw trackball motion. 4067 */ 4068 static final class TrackballAxis { 4069 /** 4070 * The maximum amount of acceleration we will apply. 4071 */ 4072 static final float MAX_ACCELERATION = 20; 4073 4074 /** 4075 * The maximum amount of time (in milliseconds) between events in order 4076 * for us to consider the user to be doing fast trackball movements, 4077 * and thus apply an acceleration. 4078 */ 4079 static final long FAST_MOVE_TIME = 150; 4080 4081 /** 4082 * Scaling factor to the time (in milliseconds) between events to how 4083 * much to multiple/divide the current acceleration. When movement 4084 * is < FAST_MOVE_TIME this multiplies the acceleration; when > 4085 * FAST_MOVE_TIME it divides it. 4086 */ 4087 static final float ACCEL_MOVE_SCALING_FACTOR = (1.0f/40); 4088 4089 static final float FIRST_MOVEMENT_THRESHOLD = 0.5f; 4090 static final float SECOND_CUMULATIVE_MOVEMENT_THRESHOLD = 2.0f; 4091 static final float SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD = 1.0f; 4092 4093 float position; 4094 float acceleration = 1; 4095 long lastMoveTime = 0; 4096 int step; 4097 int dir; 4098 int nonAccelMovement; 4099 4100 void reset(int _step) { 4101 position = 0; 4102 acceleration = 1; 4103 lastMoveTime = 0; 4104 step = _step; 4105 dir = 0; 4106 } 4107 4108 /** 4109 * Add trackball movement into the state. If the direction of movement 4110 * has been reversed, the state is reset before adding the 4111 * movement (so that you don't have to compensate for any previously 4112 * collected movement before see the result of the movement in the 4113 * new direction). 4114 * 4115 * @return Returns the absolute value of the amount of movement 4116 * collected so far. 4117 */ 4118 float collect(float off, long time, String axis) { 4119 long normTime; 4120 if (off > 0) { 4121 normTime = (long)(off * FAST_MOVE_TIME); 4122 if (dir < 0) { 4123 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to positive!"); 4124 position = 0; 4125 step = 0; 4126 acceleration = 1; 4127 lastMoveTime = 0; 4128 } 4129 dir = 1; 4130 } else if (off < 0) { 4131 normTime = (long)((-off) * FAST_MOVE_TIME); 4132 if (dir > 0) { 4133 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to negative!"); 4134 position = 0; 4135 step = 0; 4136 acceleration = 1; 4137 lastMoveTime = 0; 4138 } 4139 dir = -1; 4140 } else { 4141 normTime = 0; 4142 } 4143 4144 // The number of milliseconds between each movement that is 4145 // considered "normal" and will not result in any acceleration 4146 // or deceleration, scaled by the offset we have here. 4147 if (normTime > 0) { 4148 long delta = time - lastMoveTime; 4149 lastMoveTime = time; 4150 float acc = acceleration; 4151 if (delta < normTime) { 4152 // The user is scrolling rapidly, so increase acceleration. 4153 float scale = (normTime-delta) * ACCEL_MOVE_SCALING_FACTOR; 4154 if (scale > 1) acc *= scale; 4155 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " accelerate: off=" 4156 + off + " normTime=" + normTime + " delta=" + delta 4157 + " scale=" + scale + " acc=" + acc); 4158 acceleration = acc < MAX_ACCELERATION ? acc : MAX_ACCELERATION; 4159 } else { 4160 // The user is scrolling slowly, so decrease acceleration. 4161 float scale = (delta-normTime) * ACCEL_MOVE_SCALING_FACTOR; 4162 if (scale > 1) acc /= scale; 4163 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " deccelerate: off=" 4164 + off + " normTime=" + normTime + " delta=" + delta 4165 + " scale=" + scale + " acc=" + acc); 4166 acceleration = acc > 1 ? acc : 1; 4167 } 4168 } 4169 position += off; 4170 return Math.abs(position); 4171 } 4172 4173 /** 4174 * Generate the number of discrete movement events appropriate for 4175 * the currently collected trackball movement. 4176 * 4177 * @return Returns the number of discrete movements, either positive 4178 * or negative, or 0 if there is not enough trackball movement yet 4179 * for a discrete movement. 4180 */ 4181 int generate() { 4182 int movement = 0; 4183 nonAccelMovement = 0; 4184 do { 4185 final int dir = position >= 0 ? 1 : -1; 4186 switch (step) { 4187 // If we are going to execute the first step, then we want 4188 // to do this as soon as possible instead of waiting for 4189 // a full movement, in order to make things look responsive. 4190 case 0: 4191 if (Math.abs(position) < FIRST_MOVEMENT_THRESHOLD) { 4192 return movement; 4193 } 4194 movement += dir; 4195 nonAccelMovement += dir; 4196 step = 1; 4197 break; 4198 // If we have generated the first movement, then we need 4199 // to wait for the second complete trackball motion before 4200 // generating the second discrete movement. 4201 case 1: 4202 if (Math.abs(position) < SECOND_CUMULATIVE_MOVEMENT_THRESHOLD) { 4203 return movement; 4204 } 4205 movement += dir; 4206 nonAccelMovement += dir; 4207 position -= SECOND_CUMULATIVE_MOVEMENT_THRESHOLD * dir; 4208 step = 2; 4209 break; 4210 // After the first two, we generate discrete movements 4211 // consistently with the trackball, applying an acceleration 4212 // if the trackball is moving quickly. This is a simple 4213 // acceleration on top of what we already compute based 4214 // on how quickly the wheel is being turned, to apply 4215 // a longer increasing acceleration to continuous movement 4216 // in one direction. 4217 default: 4218 if (Math.abs(position) < SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD) { 4219 return movement; 4220 } 4221 movement += dir; 4222 position -= dir * SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD; 4223 float acc = acceleration; 4224 acc *= 1.1f; 4225 acceleration = acc < MAX_ACCELERATION ? acc : acceleration; 4226 break; 4227 } 4228 } while (true); 4229 } 4230 } 4231 4232 /** 4233 * Creates dpad events from unhandled joystick movements. 4234 */ 4235 final class SyntheticJoystickHandler extends Handler { 4236 private final static int MSG_ENQUEUE_X_AXIS_KEY_REPEAT = 1; 4237 private final static int MSG_ENQUEUE_Y_AXIS_KEY_REPEAT = 2; 4238 4239 private int mLastXDirection; 4240 private int mLastYDirection; 4241 private int mLastXKeyCode; 4242 private int mLastYKeyCode; 4243 4244 public SyntheticJoystickHandler() { 4245 super(true); 4246 } 4247 4248 @Override 4249 public void handleMessage(Message msg) { 4250 switch (msg.what) { 4251 case MSG_ENQUEUE_X_AXIS_KEY_REPEAT: 4252 case MSG_ENQUEUE_Y_AXIS_KEY_REPEAT: { 4253 KeyEvent oldEvent = (KeyEvent)msg.obj; 4254 KeyEvent e = KeyEvent.changeTimeRepeat(oldEvent, 4255 SystemClock.uptimeMillis(), 4256 oldEvent.getRepeatCount() + 1); 4257 if (mAttachInfo.mHasWindowFocus) { 4258 enqueueInputEvent(e); 4259 Message m = obtainMessage(msg.what, e); 4260 m.setAsynchronous(true); 4261 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatDelay()); 4262 } 4263 } break; 4264 } 4265 } 4266 4267 public void process(MotionEvent event) { 4268 update(event, true); 4269 } 4270 4271 public void cancel(MotionEvent event) { 4272 update(event, false); 4273 } 4274 4275 private void update(MotionEvent event, boolean synthesizeNewKeys) { 4276 final long time = event.getEventTime(); 4277 final int metaState = event.getMetaState(); 4278 final int deviceId = event.getDeviceId(); 4279 final int source = event.getSource(); 4280 4281 int xDirection = joystickAxisValueToDirection( 4282 event.getAxisValue(MotionEvent.AXIS_HAT_X)); 4283 if (xDirection == 0) { 4284 xDirection = joystickAxisValueToDirection(event.getX()); 4285 } 4286 4287 int yDirection = joystickAxisValueToDirection( 4288 event.getAxisValue(MotionEvent.AXIS_HAT_Y)); 4289 if (yDirection == 0) { 4290 yDirection = joystickAxisValueToDirection(event.getY()); 4291 } 4292 4293 if (xDirection != mLastXDirection) { 4294 if (mLastXKeyCode != 0) { 4295 removeMessages(MSG_ENQUEUE_X_AXIS_KEY_REPEAT); 4296 enqueueInputEvent(new KeyEvent(time, time, 4297 KeyEvent.ACTION_UP, mLastXKeyCode, 0, metaState, 4298 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4299 mLastXKeyCode = 0; 4300 } 4301 4302 mLastXDirection = xDirection; 4303 4304 if (xDirection != 0 && synthesizeNewKeys) { 4305 mLastXKeyCode = xDirection > 0 4306 ? KeyEvent.KEYCODE_DPAD_RIGHT : KeyEvent.KEYCODE_DPAD_LEFT; 4307 final KeyEvent e = new KeyEvent(time, time, 4308 KeyEvent.ACTION_DOWN, mLastXKeyCode, 0, metaState, 4309 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4310 enqueueInputEvent(e); 4311 Message m = obtainMessage(MSG_ENQUEUE_X_AXIS_KEY_REPEAT, e); 4312 m.setAsynchronous(true); 4313 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4314 } 4315 } 4316 4317 if (yDirection != mLastYDirection) { 4318 if (mLastYKeyCode != 0) { 4319 removeMessages(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT); 4320 enqueueInputEvent(new KeyEvent(time, time, 4321 KeyEvent.ACTION_UP, mLastYKeyCode, 0, metaState, 4322 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4323 mLastYKeyCode = 0; 4324 } 4325 4326 mLastYDirection = yDirection; 4327 4328 if (yDirection != 0 && synthesizeNewKeys) { 4329 mLastYKeyCode = yDirection > 0 4330 ? KeyEvent.KEYCODE_DPAD_DOWN : KeyEvent.KEYCODE_DPAD_UP; 4331 final KeyEvent e = new KeyEvent(time, time, 4332 KeyEvent.ACTION_DOWN, mLastYKeyCode, 0, metaState, 4333 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4334 enqueueInputEvent(e); 4335 Message m = obtainMessage(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT, e); 4336 m.setAsynchronous(true); 4337 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4338 } 4339 } 4340 } 4341 4342 private int joystickAxisValueToDirection(float value) { 4343 if (value >= 0.5f) { 4344 return 1; 4345 } else if (value <= -0.5f) { 4346 return -1; 4347 } else { 4348 return 0; 4349 } 4350 } 4351 } 4352 4353 /** 4354 * Creates dpad events from unhandled touch navigation movements. 4355 */ 4356 final class SyntheticTouchNavigationHandler extends Handler { 4357 private static final String LOCAL_TAG = "SyntheticTouchNavigationHandler"; 4358 private static final boolean LOCAL_DEBUG = false; 4359 4360 // Assumed nominal width and height in millimeters of a touch navigation pad, 4361 // if no resolution information is available from the input system. 4362 private static final float DEFAULT_WIDTH_MILLIMETERS = 48; 4363 private static final float DEFAULT_HEIGHT_MILLIMETERS = 48; 4364 4365 /* TODO: These constants should eventually be moved to ViewConfiguration. */ 4366 4367 // Tap timeout in milliseconds. 4368 private static final int TAP_TIMEOUT = 250; 4369 4370 // The maximum distance traveled for a gesture to be considered a tap in millimeters. 4371 private static final int TAP_SLOP_MILLIMETERS = 5; 4372 4373 // The nominal distance traveled to move by one unit. 4374 private static final int TICK_DISTANCE_MILLIMETERS = 12; 4375 4376 // Minimum and maximum fling velocity in ticks per second. 4377 // The minimum velocity should be set such that we perform enough ticks per 4378 // second that the fling appears to be fluid. For example, if we set the minimum 4379 // to 2 ticks per second, then there may be up to half a second delay between the next 4380 // to last and last ticks which is noticeably discrete and jerky. This value should 4381 // probably not be set to anything less than about 4. 4382 // If fling accuracy is a problem then consider tuning the tick distance instead. 4383 private static final float MIN_FLING_VELOCITY_TICKS_PER_SECOND = 6f; 4384 private static final float MAX_FLING_VELOCITY_TICKS_PER_SECOND = 20f; 4385 4386 // Fling velocity decay factor applied after each new key is emitted. 4387 // This parameter controls the deceleration and overall duration of the fling. 4388 // The fling stops automatically when its velocity drops below the minimum 4389 // fling velocity defined above. 4390 private static final float FLING_TICK_DECAY = 0.8f; 4391 4392 /* The input device that we are tracking. */ 4393 4394 private int mCurrentDeviceId = -1; 4395 private int mCurrentSource; 4396 private boolean mCurrentDeviceSupported; 4397 4398 /* Configuration for the current input device. */ 4399 4400 // The tap timeout and scaled slop. 4401 private int mConfigTapTimeout; 4402 private float mConfigTapSlop; 4403 4404 // The scaled tick distance. A movement of this amount should generally translate 4405 // into a single dpad event in a given direction. 4406 private float mConfigTickDistance; 4407 4408 // The minimum and maximum scaled fling velocity. 4409 private float mConfigMinFlingVelocity; 4410 private float mConfigMaxFlingVelocity; 4411 4412 /* Tracking state. */ 4413 4414 // The velocity tracker for detecting flings. 4415 private VelocityTracker mVelocityTracker; 4416 4417 // The active pointer id, or -1 if none. 4418 private int mActivePointerId = -1; 4419 4420 // Time and location where tracking started. 4421 private long mStartTime; 4422 private float mStartX; 4423 private float mStartY; 4424 4425 // Most recently observed position. 4426 private float mLastX; 4427 private float mLastY; 4428 4429 // Accumulated movement delta since the last direction key was sent. 4430 private float mAccumulatedX; 4431 private float mAccumulatedY; 4432 4433 // Set to true if any movement was delivered to the app. 4434 // Implies that tap slop was exceeded. 4435 private boolean mConsumedMovement; 4436 4437 // The most recently sent key down event. 4438 // The keycode remains set until the direction changes or a fling ends 4439 // so that repeated key events may be generated as required. 4440 private long mPendingKeyDownTime; 4441 private int mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 4442 private int mPendingKeyRepeatCount; 4443 private int mPendingKeyMetaState; 4444 4445 // The current fling velocity while a fling is in progress. 4446 private boolean mFlinging; 4447 private float mFlingVelocity; 4448 4449 public SyntheticTouchNavigationHandler() { 4450 super(true); 4451 } 4452 4453 public void process(MotionEvent event) { 4454 // Update the current device information. 4455 final long time = event.getEventTime(); 4456 final int deviceId = event.getDeviceId(); 4457 final int source = event.getSource(); 4458 if (mCurrentDeviceId != deviceId || mCurrentSource != source) { 4459 finishKeys(time); 4460 finishTracking(time); 4461 mCurrentDeviceId = deviceId; 4462 mCurrentSource = source; 4463 mCurrentDeviceSupported = false; 4464 InputDevice device = event.getDevice(); 4465 if (device != null) { 4466 // In order to support an input device, we must know certain 4467 // characteristics about it, such as its size and resolution. 4468 InputDevice.MotionRange xRange = device.getMotionRange(MotionEvent.AXIS_X); 4469 InputDevice.MotionRange yRange = device.getMotionRange(MotionEvent.AXIS_Y); 4470 if (xRange != null && yRange != null) { 4471 mCurrentDeviceSupported = true; 4472 4473 // Infer the resolution if it not actually known. 4474 float xRes = xRange.getResolution(); 4475 if (xRes <= 0) { 4476 xRes = xRange.getRange() / DEFAULT_WIDTH_MILLIMETERS; 4477 } 4478 float yRes = yRange.getResolution(); 4479 if (yRes <= 0) { 4480 yRes = yRange.getRange() / DEFAULT_HEIGHT_MILLIMETERS; 4481 } 4482 float nominalRes = (xRes + yRes) * 0.5f; 4483 4484 // Precompute all of the configuration thresholds we will need. 4485 mConfigTapTimeout = TAP_TIMEOUT; 4486 mConfigTapSlop = TAP_SLOP_MILLIMETERS * nominalRes; 4487 mConfigTickDistance = TICK_DISTANCE_MILLIMETERS * nominalRes; 4488 mConfigMinFlingVelocity = 4489 MIN_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 4490 mConfigMaxFlingVelocity = 4491 MAX_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 4492 4493 if (LOCAL_DEBUG) { 4494 Log.d(LOCAL_TAG, "Configured device " + mCurrentDeviceId 4495 + " (" + Integer.toHexString(mCurrentSource) + "): " 4496 + "mConfigTapTimeout=" + mConfigTapTimeout 4497 + ", mConfigTapSlop=" + mConfigTapSlop 4498 + ", mConfigTickDistance=" + mConfigTickDistance 4499 + ", mConfigMinFlingVelocity=" + mConfigMinFlingVelocity 4500 + ", mConfigMaxFlingVelocity=" + mConfigMaxFlingVelocity); 4501 } 4502 } 4503 } 4504 } 4505 if (!mCurrentDeviceSupported) { 4506 return; 4507 } 4508 4509 // Handle the event. 4510 final int action = event.getActionMasked(); 4511 switch (action) { 4512 case MotionEvent.ACTION_DOWN: { 4513 boolean caughtFling = mFlinging; 4514 finishKeys(time); 4515 finishTracking(time); 4516 mActivePointerId = event.getPointerId(0); 4517 mVelocityTracker = VelocityTracker.obtain(); 4518 mVelocityTracker.addMovement(event); 4519 mStartTime = time; 4520 mStartX = event.getX(); 4521 mStartY = event.getY(); 4522 mLastX = mStartX; 4523 mLastY = mStartY; 4524 mAccumulatedX = 0; 4525 mAccumulatedY = 0; 4526 4527 // If we caught a fling, then pretend that the tap slop has already 4528 // been exceeded to suppress taps whose only purpose is to stop the fling. 4529 mConsumedMovement = caughtFling; 4530 break; 4531 } 4532 4533 case MotionEvent.ACTION_MOVE: 4534 case MotionEvent.ACTION_UP: { 4535 if (mActivePointerId < 0) { 4536 break; 4537 } 4538 final int index = event.findPointerIndex(mActivePointerId); 4539 if (index < 0) { 4540 finishKeys(time); 4541 finishTracking(time); 4542 break; 4543 } 4544 4545 mVelocityTracker.addMovement(event); 4546 final float x = event.getX(index); 4547 final float y = event.getY(index); 4548 mAccumulatedX += x - mLastX; 4549 mAccumulatedY += y - mLastY; 4550 mLastX = x; 4551 mLastY = y; 4552 4553 // Consume any accumulated movement so far. 4554 final int metaState = event.getMetaState(); 4555 consumeAccumulatedMovement(time, metaState); 4556 4557 // Detect taps and flings. 4558 if (action == MotionEvent.ACTION_UP) { 4559 if (!mConsumedMovement 4560 && Math.hypot(mLastX - mStartX, mLastY - mStartY) < mConfigTapSlop 4561 && time <= mStartTime + mConfigTapTimeout) { 4562 // It's a tap! 4563 finishKeys(time); 4564 sendKeyDownOrRepeat(time, KeyEvent.KEYCODE_DPAD_CENTER, metaState); 4565 sendKeyUp(time); 4566 } else if (mConsumedMovement 4567 && mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 4568 // It might be a fling. 4569 mVelocityTracker.computeCurrentVelocity(1000, mConfigMaxFlingVelocity); 4570 final float vx = mVelocityTracker.getXVelocity(mActivePointerId); 4571 final float vy = mVelocityTracker.getYVelocity(mActivePointerId); 4572 if (!startFling(time, vx, vy)) { 4573 finishKeys(time); 4574 } 4575 } 4576 finishTracking(time); 4577 } 4578 break; 4579 } 4580 4581 case MotionEvent.ACTION_CANCEL: { 4582 finishKeys(time); 4583 finishTracking(time); 4584 break; 4585 } 4586 } 4587 } 4588 4589 public void cancel(MotionEvent event) { 4590 if (mCurrentDeviceId == event.getDeviceId() 4591 && mCurrentSource == event.getSource()) { 4592 final long time = event.getEventTime(); 4593 finishKeys(time); 4594 finishTracking(time); 4595 } 4596 } 4597 4598 private void finishKeys(long time) { 4599 cancelFling(); 4600 sendKeyUp(time); 4601 } 4602 4603 private void finishTracking(long time) { 4604 if (mActivePointerId >= 0) { 4605 mActivePointerId = -1; 4606 mVelocityTracker.recycle(); 4607 mVelocityTracker = null; 4608 } 4609 } 4610 4611 private void consumeAccumulatedMovement(long time, int metaState) { 4612 final float absX = Math.abs(mAccumulatedX); 4613 final float absY = Math.abs(mAccumulatedY); 4614 if (absX >= absY) { 4615 if (absX >= mConfigTickDistance) { 4616 mAccumulatedX = consumeAccumulatedMovement(time, metaState, mAccumulatedX, 4617 KeyEvent.KEYCODE_DPAD_LEFT, KeyEvent.KEYCODE_DPAD_RIGHT); 4618 mAccumulatedY = 0; 4619 mConsumedMovement = true; 4620 } 4621 } else { 4622 if (absY >= mConfigTickDistance) { 4623 mAccumulatedY = consumeAccumulatedMovement(time, metaState, mAccumulatedY, 4624 KeyEvent.KEYCODE_DPAD_UP, KeyEvent.KEYCODE_DPAD_DOWN); 4625 mAccumulatedX = 0; 4626 mConsumedMovement = true; 4627 } 4628 } 4629 } 4630 4631 private float consumeAccumulatedMovement(long time, int metaState, 4632 float accumulator, int negativeKeyCode, int positiveKeyCode) { 4633 while (accumulator <= -mConfigTickDistance) { 4634 sendKeyDownOrRepeat(time, negativeKeyCode, metaState); 4635 accumulator += mConfigTickDistance; 4636 } 4637 while (accumulator >= mConfigTickDistance) { 4638 sendKeyDownOrRepeat(time, positiveKeyCode, metaState); 4639 accumulator -= mConfigTickDistance; 4640 } 4641 return accumulator; 4642 } 4643 4644 private void sendKeyDownOrRepeat(long time, int keyCode, int metaState) { 4645 if (mPendingKeyCode != keyCode) { 4646 sendKeyUp(time); 4647 mPendingKeyDownTime = time; 4648 mPendingKeyCode = keyCode; 4649 mPendingKeyRepeatCount = 0; 4650 } else { 4651 mPendingKeyRepeatCount += 1; 4652 } 4653 mPendingKeyMetaState = metaState; 4654 4655 // Note: Normally we would pass FLAG_LONG_PRESS when the repeat count is 1 4656 // but it doesn't quite make sense when simulating the events in this way. 4657 if (LOCAL_DEBUG) { 4658 Log.d(LOCAL_TAG, "Sending key down: keyCode=" + mPendingKeyCode 4659 + ", repeatCount=" + mPendingKeyRepeatCount 4660 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 4661 } 4662 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 4663 KeyEvent.ACTION_DOWN, mPendingKeyCode, mPendingKeyRepeatCount, 4664 mPendingKeyMetaState, mCurrentDeviceId, 4665 KeyEvent.FLAG_FALLBACK, mCurrentSource)); 4666 } 4667 4668 private void sendKeyUp(long time) { 4669 if (mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 4670 if (LOCAL_DEBUG) { 4671 Log.d(LOCAL_TAG, "Sending key up: keyCode=" + mPendingKeyCode 4672 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 4673 } 4674 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 4675 KeyEvent.ACTION_UP, mPendingKeyCode, 0, mPendingKeyMetaState, 4676 mCurrentDeviceId, 0, KeyEvent.FLAG_FALLBACK, 4677 mCurrentSource)); 4678 mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 4679 } 4680 } 4681 4682 private boolean startFling(long time, float vx, float vy) { 4683 if (LOCAL_DEBUG) { 4684 Log.d(LOCAL_TAG, "Considering fling: vx=" + vx + ", vy=" + vy 4685 + ", min=" + mConfigMinFlingVelocity); 4686 } 4687 4688 // Flings must be oriented in the same direction as the preceding movements. 4689 switch (mPendingKeyCode) { 4690 case KeyEvent.KEYCODE_DPAD_LEFT: 4691 if (-vx >= mConfigMinFlingVelocity 4692 && Math.abs(vy) < mConfigMinFlingVelocity) { 4693 mFlingVelocity = -vx; 4694 break; 4695 } 4696 return false; 4697 4698 case KeyEvent.KEYCODE_DPAD_RIGHT: 4699 if (vx >= mConfigMinFlingVelocity 4700 && Math.abs(vy) < mConfigMinFlingVelocity) { 4701 mFlingVelocity = vx; 4702 break; 4703 } 4704 return false; 4705 4706 case KeyEvent.KEYCODE_DPAD_UP: 4707 if (-vy >= mConfigMinFlingVelocity 4708 && Math.abs(vx) < mConfigMinFlingVelocity) { 4709 mFlingVelocity = -vy; 4710 break; 4711 } 4712 return false; 4713 4714 case KeyEvent.KEYCODE_DPAD_DOWN: 4715 if (vy >= mConfigMinFlingVelocity 4716 && Math.abs(vx) < mConfigMinFlingVelocity) { 4717 mFlingVelocity = vy; 4718 break; 4719 } 4720 return false; 4721 } 4722 4723 // Post the first fling event. 4724 mFlinging = postFling(time); 4725 return mFlinging; 4726 } 4727 4728 private boolean postFling(long time) { 4729 // The idea here is to estimate the time when the pointer would have 4730 // traveled one tick distance unit given the current fling velocity. 4731 // This effect creates continuity of motion. 4732 if (mFlingVelocity >= mConfigMinFlingVelocity) { 4733 long delay = (long)(mConfigTickDistance / mFlingVelocity * 1000); 4734 postAtTime(mFlingRunnable, time + delay); 4735 if (LOCAL_DEBUG) { 4736 Log.d(LOCAL_TAG, "Posted fling: velocity=" 4737 + mFlingVelocity + ", delay=" + delay 4738 + ", keyCode=" + mPendingKeyCode); 4739 } 4740 return true; 4741 } 4742 return false; 4743 } 4744 4745 private void cancelFling() { 4746 if (mFlinging) { 4747 removeCallbacks(mFlingRunnable); 4748 mFlinging = false; 4749 } 4750 } 4751 4752 private final Runnable mFlingRunnable = new Runnable() { 4753 @Override 4754 public void run() { 4755 final long time = SystemClock.uptimeMillis(); 4756 sendKeyDownOrRepeat(time, mPendingKeyCode, mPendingKeyMetaState); 4757 mFlingVelocity *= FLING_TICK_DECAY; 4758 if (!postFling(time)) { 4759 mFlinging = false; 4760 finishKeys(time); 4761 } 4762 } 4763 }; 4764 } 4765 4766 /** 4767 * Returns true if the key is used for keyboard navigation. 4768 * @param keyEvent The key event. 4769 * @return True if the key is used for keyboard navigation. 4770 */ 4771 private static boolean isNavigationKey(KeyEvent keyEvent) { 4772 switch (keyEvent.getKeyCode()) { 4773 case KeyEvent.KEYCODE_DPAD_LEFT: 4774 case KeyEvent.KEYCODE_DPAD_RIGHT: 4775 case KeyEvent.KEYCODE_DPAD_UP: 4776 case KeyEvent.KEYCODE_DPAD_DOWN: 4777 case KeyEvent.KEYCODE_DPAD_CENTER: 4778 case KeyEvent.KEYCODE_PAGE_UP: 4779 case KeyEvent.KEYCODE_PAGE_DOWN: 4780 case KeyEvent.KEYCODE_MOVE_HOME: 4781 case KeyEvent.KEYCODE_MOVE_END: 4782 case KeyEvent.KEYCODE_TAB: 4783 case KeyEvent.KEYCODE_SPACE: 4784 case KeyEvent.KEYCODE_ENTER: 4785 return true; 4786 } 4787 return false; 4788 } 4789 4790 /** 4791 * Returns true if the key is used for typing. 4792 * @param keyEvent The key event. 4793 * @return True if the key is used for typing. 4794 */ 4795 private static boolean isTypingKey(KeyEvent keyEvent) { 4796 return keyEvent.getUnicodeChar() > 0; 4797 } 4798 4799 /** 4800 * See if the key event means we should leave touch mode (and leave touch mode if so). 4801 * @param event The key event. 4802 * @return Whether this key event should be consumed (meaning the act of 4803 * leaving touch mode alone is considered the event). 4804 */ 4805 private boolean checkForLeavingTouchModeAndConsume(KeyEvent event) { 4806 // Only relevant in touch mode. 4807 if (!mAttachInfo.mInTouchMode) { 4808 return false; 4809 } 4810 4811 // Only consider leaving touch mode on DOWN or MULTIPLE actions, never on UP. 4812 final int action = event.getAction(); 4813 if (action != KeyEvent.ACTION_DOWN && action != KeyEvent.ACTION_MULTIPLE) { 4814 return false; 4815 } 4816 4817 // Don't leave touch mode if the IME told us not to. 4818 if ((event.getFlags() & KeyEvent.FLAG_KEEP_TOUCH_MODE) != 0) { 4819 return false; 4820 } 4821 4822 // If the key can be used for keyboard navigation then leave touch mode 4823 // and select a focused view if needed (in ensureTouchMode). 4824 // When a new focused view is selected, we consume the navigation key because 4825 // navigation doesn't make much sense unless a view already has focus so 4826 // the key's purpose is to set focus. 4827 if (isNavigationKey(event)) { 4828 return ensureTouchMode(false); 4829 } 4830 4831 // If the key can be used for typing then leave touch mode 4832 // and select a focused view if needed (in ensureTouchMode). 4833 // Always allow the view to process the typing key. 4834 if (isTypingKey(event)) { 4835 ensureTouchMode(false); 4836 return false; 4837 } 4838 4839 return false; 4840 } 4841 4842 /* drag/drop */ 4843 void setLocalDragState(Object obj) { 4844 mLocalDragState = obj; 4845 } 4846 4847 private void handleDragEvent(DragEvent event) { 4848 // From the root, only drag start/end/location are dispatched. entered/exited 4849 // are determined and dispatched by the viewgroup hierarchy, who then report 4850 // that back here for ultimate reporting back to the framework. 4851 if (mView != null && mAdded) { 4852 final int what = event.mAction; 4853 4854 if (what == DragEvent.ACTION_DRAG_EXITED) { 4855 // A direct EXITED event means that the window manager knows we've just crossed 4856 // a window boundary, so the current drag target within this one must have 4857 // just been exited. Send it the usual notifications and then we're done 4858 // for now. 4859 mView.dispatchDragEvent(event); 4860 } else { 4861 // Cache the drag description when the operation starts, then fill it in 4862 // on subsequent calls as a convenience 4863 if (what == DragEvent.ACTION_DRAG_STARTED) { 4864 mCurrentDragView = null; // Start the current-recipient tracking 4865 mDragDescription = event.mClipDescription; 4866 } else { 4867 event.mClipDescription = mDragDescription; 4868 } 4869 4870 // For events with a [screen] location, translate into window coordinates 4871 if ((what == DragEvent.ACTION_DRAG_LOCATION) || (what == DragEvent.ACTION_DROP)) { 4872 mDragPoint.set(event.mX, event.mY); 4873 if (mTranslator != null) { 4874 mTranslator.translatePointInScreenToAppWindow(mDragPoint); 4875 } 4876 4877 if (mCurScrollY != 0) { 4878 mDragPoint.offset(0, mCurScrollY); 4879 } 4880 4881 event.mX = mDragPoint.x; 4882 event.mY = mDragPoint.y; 4883 } 4884 4885 // Remember who the current drag target is pre-dispatch 4886 final View prevDragView = mCurrentDragView; 4887 4888 // Now dispatch the drag/drop event 4889 boolean result = mView.dispatchDragEvent(event); 4890 4891 // If we changed apparent drag target, tell the OS about it 4892 if (prevDragView != mCurrentDragView) { 4893 try { 4894 if (prevDragView != null) { 4895 mWindowSession.dragRecipientExited(mWindow); 4896 } 4897 if (mCurrentDragView != null) { 4898 mWindowSession.dragRecipientEntered(mWindow); 4899 } 4900 } catch (RemoteException e) { 4901 Slog.e(TAG, "Unable to note drag target change"); 4902 } 4903 } 4904 4905 // Report the drop result when we're done 4906 if (what == DragEvent.ACTION_DROP) { 4907 mDragDescription = null; 4908 try { 4909 Log.i(TAG, "Reporting drop result: " + result); 4910 mWindowSession.reportDropResult(mWindow, result); 4911 } catch (RemoteException e) { 4912 Log.e(TAG, "Unable to report drop result"); 4913 } 4914 } 4915 4916 // When the drag operation ends, release any local state object 4917 // that may have been in use 4918 if (what == DragEvent.ACTION_DRAG_ENDED) { 4919 setLocalDragState(null); 4920 } 4921 } 4922 } 4923 event.recycle(); 4924 } 4925 4926 public void handleDispatchSystemUiVisibilityChanged(SystemUiVisibilityInfo args) { 4927 if (mSeq != args.seq) { 4928 // The sequence has changed, so we need to update our value and make 4929 // sure to do a traversal afterward so the window manager is given our 4930 // most recent data. 4931 mSeq = args.seq; 4932 mAttachInfo.mForceReportNewAttributes = true; 4933 scheduleTraversals(); 4934 } 4935 if (mView == null) return; 4936 if (args.localChanges != 0) { 4937 mView.updateLocalSystemUiVisibility(args.localValue, args.localChanges); 4938 } 4939 if (mAttachInfo != null) { 4940 int visibility = args.globalVisibility&View.SYSTEM_UI_CLEARABLE_FLAGS; 4941 if (visibility != mAttachInfo.mGlobalSystemUiVisibility) { 4942 mAttachInfo.mGlobalSystemUiVisibility = visibility; 4943 mView.dispatchSystemUiVisibilityChanged(visibility); 4944 } 4945 } 4946 } 4947 4948 public void handleDispatchDoneAnimating() { 4949 if (mWindowsAnimating) { 4950 mWindowsAnimating = false; 4951 if (!mDirty.isEmpty() || mIsAnimating || mFullRedrawNeeded) { 4952 scheduleTraversals(); 4953 } 4954 } 4955 } 4956 4957 public void getLastTouchPoint(Point outLocation) { 4958 outLocation.x = (int) mLastTouchPoint.x; 4959 outLocation.y = (int) mLastTouchPoint.y; 4960 } 4961 4962 public void setDragFocus(View newDragTarget) { 4963 if (mCurrentDragView != newDragTarget) { 4964 mCurrentDragView = newDragTarget; 4965 } 4966 } 4967 4968 private AudioManager getAudioManager() { 4969 if (mView == null) { 4970 throw new IllegalStateException("getAudioManager called when there is no mView"); 4971 } 4972 if (mAudioManager == null) { 4973 mAudioManager = (AudioManager) mView.getContext().getSystemService(Context.AUDIO_SERVICE); 4974 } 4975 return mAudioManager; 4976 } 4977 4978 public AccessibilityInteractionController getAccessibilityInteractionController() { 4979 if (mView == null) { 4980 throw new IllegalStateException("getAccessibilityInteractionController" 4981 + " called when there is no mView"); 4982 } 4983 if (mAccessibilityInteractionController == null) { 4984 mAccessibilityInteractionController = new AccessibilityInteractionController(this); 4985 } 4986 return mAccessibilityInteractionController; 4987 } 4988 4989 private int relayoutWindow(WindowManager.LayoutParams params, int viewVisibility, 4990 boolean insetsPending) throws RemoteException { 4991 4992 float appScale = mAttachInfo.mApplicationScale; 4993 boolean restore = false; 4994 if (params != null && mTranslator != null) { 4995 restore = true; 4996 params.backup(); 4997 mTranslator.translateWindowLayout(params); 4998 } 4999 if (params != null) { 5000 if (DBG) Log.d(TAG, "WindowLayout in layoutWindow:" + params); 5001 } 5002 mPendingConfiguration.seq = 0; 5003 //Log.d(TAG, ">>>>>> CALLING relayout"); 5004 if (params != null && mOrigWindowType != params.type) { 5005 // For compatibility with old apps, don't crash here. 5006 if (mTargetSdkVersion < android.os.Build.VERSION_CODES.ICE_CREAM_SANDWICH) { 5007 Slog.w(TAG, "Window type can not be changed after " 5008 + "the window is added; ignoring change of " + mView); 5009 params.type = mOrigWindowType; 5010 } 5011 } 5012 int relayoutResult = mWindowSession.relayout( 5013 mWindow, mSeq, params, 5014 (int) (mView.getMeasuredWidth() * appScale + 0.5f), 5015 (int) (mView.getMeasuredHeight() * appScale + 0.5f), 5016 viewVisibility, insetsPending ? WindowManagerGlobal.RELAYOUT_INSETS_PENDING : 0, 5017 mWinFrame, mPendingOverscanInsets, mPendingContentInsets, mPendingVisibleInsets, 5018 mPendingConfiguration, mSurface); 5019 //Log.d(TAG, "<<<<<< BACK FROM relayout"); 5020 if (restore) { 5021 params.restore(); 5022 } 5023 5024 if (mTranslator != null) { 5025 mTranslator.translateRectInScreenToAppWinFrame(mWinFrame); 5026 mTranslator.translateRectInScreenToAppWindow(mPendingOverscanInsets); 5027 mTranslator.translateRectInScreenToAppWindow(mPendingContentInsets); 5028 mTranslator.translateRectInScreenToAppWindow(mPendingVisibleInsets); 5029 } 5030 return relayoutResult; 5031 } 5032 5033 /** 5034 * {@inheritDoc} 5035 */ 5036 public void playSoundEffect(int effectId) { 5037 checkThread(); 5038 5039 if (mMediaDisabled) { 5040 return; 5041 } 5042 5043 try { 5044 final AudioManager audioManager = getAudioManager(); 5045 5046 switch (effectId) { 5047 case SoundEffectConstants.CLICK: 5048 audioManager.playSoundEffect(AudioManager.FX_KEY_CLICK); 5049 return; 5050 case SoundEffectConstants.NAVIGATION_DOWN: 5051 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_DOWN); 5052 return; 5053 case SoundEffectConstants.NAVIGATION_LEFT: 5054 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_LEFT); 5055 return; 5056 case SoundEffectConstants.NAVIGATION_RIGHT: 5057 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_RIGHT); 5058 return; 5059 case SoundEffectConstants.NAVIGATION_UP: 5060 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_UP); 5061 return; 5062 default: 5063 throw new IllegalArgumentException("unknown effect id " + effectId + 5064 " not defined in " + SoundEffectConstants.class.getCanonicalName()); 5065 } 5066 } catch (IllegalStateException e) { 5067 // Exception thrown by getAudioManager() when mView is null 5068 Log.e(TAG, "FATAL EXCEPTION when attempting to play sound effect: " + e); 5069 e.printStackTrace(); 5070 } 5071 } 5072 5073 /** 5074 * {@inheritDoc} 5075 */ 5076 public boolean performHapticFeedback(int effectId, boolean always) { 5077 try { 5078 return mWindowSession.performHapticFeedback(mWindow, effectId, always); 5079 } catch (RemoteException e) { 5080 return false; 5081 } 5082 } 5083 5084 /** 5085 * {@inheritDoc} 5086 */ 5087 public View focusSearch(View focused, int direction) { 5088 checkThread(); 5089 if (!(mView instanceof ViewGroup)) { 5090 return null; 5091 } 5092 return FocusFinder.getInstance().findNextFocus((ViewGroup) mView, focused, direction); 5093 } 5094 5095 public void debug() { 5096 mView.debug(); 5097 } 5098 5099 public void dumpGfxInfo(int[] info) { 5100 info[0] = info[1] = 0; 5101 if (mView != null) { 5102 getGfxInfo(mView, info); 5103 } 5104 } 5105 5106 private static void getGfxInfo(View view, int[] info) { 5107 DisplayList displayList = view.mDisplayList; 5108 info[0]++; 5109 if (displayList != null) { 5110 info[1] += displayList.getSize(); 5111 } 5112 5113 if (view instanceof ViewGroup) { 5114 ViewGroup group = (ViewGroup) view; 5115 5116 int count = group.getChildCount(); 5117 for (int i = 0; i < count; i++) { 5118 getGfxInfo(group.getChildAt(i), info); 5119 } 5120 } 5121 } 5122 5123 public void die(boolean immediate) { 5124 // Make sure we do execute immediately if we are in the middle of a traversal or the damage 5125 // done by dispatchDetachedFromWindow will cause havoc on return. 5126 if (immediate && !mIsInTraversal) { 5127 doDie(); 5128 } else { 5129 if (!mIsDrawing) { 5130 destroyHardwareRenderer(); 5131 } else { 5132 Log.e(TAG, "Attempting to destroy the window while drawing!\n" + 5133 " window=" + this + ", title=" + mWindowAttributes.getTitle()); 5134 } 5135 mHandler.sendEmptyMessage(MSG_DIE); 5136 } 5137 } 5138 5139 void doDie() { 5140 checkThread(); 5141 if (LOCAL_LOGV) Log.v(TAG, "DIE in " + this + " of " + mSurface); 5142 synchronized (this) { 5143 if (mAdded) { 5144 dispatchDetachedFromWindow(); 5145 } 5146 5147 if (mAdded && !mFirst) { 5148 invalidateDisplayLists(); 5149 destroyHardwareRenderer(); 5150 5151 if (mView != null) { 5152 int viewVisibility = mView.getVisibility(); 5153 boolean viewVisibilityChanged = mViewVisibility != viewVisibility; 5154 if (mWindowAttributesChanged || viewVisibilityChanged) { 5155 // If layout params have been changed, first give them 5156 // to the window manager to make sure it has the correct 5157 // animation info. 5158 try { 5159 if ((relayoutWindow(mWindowAttributes, viewVisibility, false) 5160 & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 5161 mWindowSession.finishDrawing(mWindow); 5162 } 5163 } catch (RemoteException e) { 5164 } 5165 } 5166 5167 mSurface.release(); 5168 } 5169 } 5170 5171 mAdded = false; 5172 } 5173 WindowManagerGlobal.getInstance().doRemoveView(this); 5174 } 5175 5176 public void requestUpdateConfiguration(Configuration config) { 5177 Message msg = mHandler.obtainMessage(MSG_UPDATE_CONFIGURATION, config); 5178 mHandler.sendMessage(msg); 5179 } 5180 5181 public void loadSystemProperties() { 5182 mHandler.post(new Runnable() { 5183 @Override 5184 public void run() { 5185 // Profiling 5186 mProfileRendering = SystemProperties.getBoolean(PROPERTY_PROFILE_RENDERING, false); 5187 profileRendering(mAttachInfo.mHasWindowFocus); 5188 5189 // Media (used by sound effects) 5190 mMediaDisabled = SystemProperties.getBoolean(PROPERTY_MEDIA_DISABLED, false); 5191 5192 // Hardware rendering 5193 if (mAttachInfo.mHardwareRenderer != null) { 5194 if (mAttachInfo.mHardwareRenderer.loadSystemProperties(mHolder.getSurface())) { 5195 invalidate(); 5196 } 5197 } 5198 5199 // Layout debugging 5200 boolean layout = SystemProperties.getBoolean(View.DEBUG_LAYOUT_PROPERTY, false); 5201 if (layout != mAttachInfo.mDebugLayout) { 5202 mAttachInfo.mDebugLayout = layout; 5203 if (!mHandler.hasMessages(MSG_INVALIDATE_WORLD)) { 5204 mHandler.sendEmptyMessageDelayed(MSG_INVALIDATE_WORLD, 200); 5205 } 5206 } 5207 } 5208 }); 5209 } 5210 5211 private void destroyHardwareRenderer() { 5212 AttachInfo attachInfo = mAttachInfo; 5213 HardwareRenderer hardwareRenderer = attachInfo.mHardwareRenderer; 5214 5215 if (hardwareRenderer != null) { 5216 if (mView != null) { 5217 hardwareRenderer.destroyHardwareResources(mView); 5218 } 5219 hardwareRenderer.destroy(true); 5220 hardwareRenderer.setRequested(false); 5221 5222 attachInfo.mHardwareRenderer = null; 5223 attachInfo.mHardwareAccelerated = false; 5224 } 5225 } 5226 5227 public void dispatchFinishInputConnection(InputConnection connection) { 5228 Message msg = mHandler.obtainMessage(MSG_FINISH_INPUT_CONNECTION, connection); 5229 mHandler.sendMessage(msg); 5230 } 5231 5232 public void dispatchResized(Rect frame, Rect overscanInsets, Rect contentInsets, 5233 Rect visibleInsets, boolean reportDraw, Configuration newConfig) { 5234 if (DEBUG_LAYOUT) Log.v(TAG, "Resizing " + this + ": frame=" + frame.toShortString() 5235 + " contentInsets=" + contentInsets.toShortString() 5236 + " visibleInsets=" + visibleInsets.toShortString() 5237 + " reportDraw=" + reportDraw); 5238 Message msg = mHandler.obtainMessage(reportDraw ? MSG_RESIZED_REPORT : MSG_RESIZED); 5239 if (mTranslator != null) { 5240 mTranslator.translateRectInScreenToAppWindow(frame); 5241 mTranslator.translateRectInScreenToAppWindow(overscanInsets); 5242 mTranslator.translateRectInScreenToAppWindow(contentInsets); 5243 mTranslator.translateRectInScreenToAppWindow(visibleInsets); 5244 } 5245 SomeArgs args = SomeArgs.obtain(); 5246 final boolean sameProcessCall = (Binder.getCallingPid() == android.os.Process.myPid()); 5247 args.arg1 = sameProcessCall ? new Rect(frame) : frame; 5248 args.arg2 = sameProcessCall ? new Rect(contentInsets) : contentInsets; 5249 args.arg3 = sameProcessCall ? new Rect(visibleInsets) : visibleInsets; 5250 args.arg4 = sameProcessCall && newConfig != null ? new Configuration(newConfig) : newConfig; 5251 args.arg5 = sameProcessCall ? new Rect(overscanInsets) : overscanInsets; 5252 msg.obj = args; 5253 mHandler.sendMessage(msg); 5254 } 5255 5256 public void dispatchMoved(int newX, int newY) { 5257 if (DEBUG_LAYOUT) Log.v(TAG, "Window moved " + this + ": newX=" + newX + " newY=" + newY); 5258 if (mTranslator != null) { 5259 PointF point = new PointF(newX, newY); 5260 mTranslator.translatePointInScreenToAppWindow(point); 5261 newX = (int) (point.x + 0.5); 5262 newY = (int) (point.y + 0.5); 5263 } 5264 Message msg = mHandler.obtainMessage(MSG_WINDOW_MOVED, newX, newY); 5265 mHandler.sendMessage(msg); 5266 } 5267 5268 /** 5269 * Represents a pending input event that is waiting in a queue. 5270 * 5271 * Input events are processed in serial order by the timestamp specified by 5272 * {@link InputEvent#getEventTimeNano()}. In general, the input dispatcher delivers 5273 * one input event to the application at a time and waits for the application 5274 * to finish handling it before delivering the next one. 5275 * 5276 * However, because the application or IME can synthesize and inject multiple 5277 * key events at a time without going through the input dispatcher, we end up 5278 * needing a queue on the application's side. 5279 */ 5280 private static final class QueuedInputEvent { 5281 public static final int FLAG_DELIVER_POST_IME = 1 << 0; 5282 public static final int FLAG_DEFERRED = 1 << 1; 5283 public static final int FLAG_FINISHED = 1 << 2; 5284 public static final int FLAG_FINISHED_HANDLED = 1 << 3; 5285 public static final int FLAG_RESYNTHESIZED = 1 << 4; 5286 5287 public QueuedInputEvent mNext; 5288 5289 public InputEvent mEvent; 5290 public InputEventReceiver mReceiver; 5291 public int mFlags; 5292 5293 public boolean shouldSkipIme() { 5294 if ((mFlags & FLAG_DELIVER_POST_IME) != 0) { 5295 return true; 5296 } 5297 return mEvent instanceof MotionEvent 5298 && mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER); 5299 } 5300 } 5301 5302 private QueuedInputEvent obtainQueuedInputEvent(InputEvent event, 5303 InputEventReceiver receiver, int flags) { 5304 QueuedInputEvent q = mQueuedInputEventPool; 5305 if (q != null) { 5306 mQueuedInputEventPoolSize -= 1; 5307 mQueuedInputEventPool = q.mNext; 5308 q.mNext = null; 5309 } else { 5310 q = new QueuedInputEvent(); 5311 } 5312 5313 q.mEvent = event; 5314 q.mReceiver = receiver; 5315 q.mFlags = flags; 5316 return q; 5317 } 5318 5319 private void recycleQueuedInputEvent(QueuedInputEvent q) { 5320 q.mEvent = null; 5321 q.mReceiver = null; 5322 5323 if (mQueuedInputEventPoolSize < MAX_QUEUED_INPUT_EVENT_POOL_SIZE) { 5324 mQueuedInputEventPoolSize += 1; 5325 q.mNext = mQueuedInputEventPool; 5326 mQueuedInputEventPool = q; 5327 } 5328 } 5329 5330 void enqueueInputEvent(InputEvent event) { 5331 enqueueInputEvent(event, null, 0, false); 5332 } 5333 5334 void enqueueInputEvent(InputEvent event, 5335 InputEventReceiver receiver, int flags, boolean processImmediately) { 5336 QueuedInputEvent q = obtainQueuedInputEvent(event, receiver, flags); 5337 5338 // Always enqueue the input event in order, regardless of its time stamp. 5339 // We do this because the application or the IME may inject key events 5340 // in response to touch events and we want to ensure that the injected keys 5341 // are processed in the order they were received and we cannot trust that 5342 // the time stamp of injected events are monotonic. 5343 QueuedInputEvent last = mPendingInputEventTail; 5344 if (last == null) { 5345 mPendingInputEventHead = q; 5346 mPendingInputEventTail = q; 5347 } else { 5348 last.mNext = q; 5349 mPendingInputEventTail = q; 5350 } 5351 mPendingInputEventCount += 1; 5352 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 5353 mPendingInputEventCount); 5354 5355 if (processImmediately) { 5356 doProcessInputEvents(); 5357 } else { 5358 scheduleProcessInputEvents(); 5359 } 5360 } 5361 5362 private void scheduleProcessInputEvents() { 5363 if (!mProcessInputEventsScheduled) { 5364 mProcessInputEventsScheduled = true; 5365 Message msg = mHandler.obtainMessage(MSG_PROCESS_INPUT_EVENTS); 5366 msg.setAsynchronous(true); 5367 mHandler.sendMessage(msg); 5368 } 5369 } 5370 5371 void doProcessInputEvents() { 5372 // Deliver all pending input events in the queue. 5373 while (mPendingInputEventHead != null) { 5374 QueuedInputEvent q = mPendingInputEventHead; 5375 mPendingInputEventHead = q.mNext; 5376 if (mPendingInputEventHead == null) { 5377 mPendingInputEventTail = null; 5378 } 5379 q.mNext = null; 5380 5381 mPendingInputEventCount -= 1; 5382 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 5383 mPendingInputEventCount); 5384 5385 deliverInputEvent(q); 5386 } 5387 5388 // We are done processing all input events that we can process right now 5389 // so we can clear the pending flag immediately. 5390 if (mProcessInputEventsScheduled) { 5391 mProcessInputEventsScheduled = false; 5392 mHandler.removeMessages(MSG_PROCESS_INPUT_EVENTS); 5393 } 5394 } 5395 5396 private void deliverInputEvent(QueuedInputEvent q) { 5397 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "deliverInputEvent"); 5398 try { 5399 if (mInputEventConsistencyVerifier != null) { 5400 mInputEventConsistencyVerifier.onInputEvent(q.mEvent, 0); 5401 } 5402 5403 InputStage stage = q.shouldSkipIme() ? mFirstPostImeInputStage : mFirstInputStage; 5404 if (stage != null) { 5405 stage.deliver(q); 5406 } else { 5407 finishInputEvent(q); 5408 } 5409 } finally { 5410 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 5411 } 5412 } 5413 5414 private void finishInputEvent(QueuedInputEvent q) { 5415 if (q.mReceiver != null) { 5416 boolean handled = (q.mFlags & QueuedInputEvent.FLAG_FINISHED_HANDLED) != 0; 5417 q.mReceiver.finishInputEvent(q.mEvent, handled); 5418 } else { 5419 q.mEvent.recycleIfNeededAfterDispatch(); 5420 } 5421 5422 recycleQueuedInputEvent(q); 5423 } 5424 5425 static boolean isTerminalInputEvent(InputEvent event) { 5426 if (event instanceof KeyEvent) { 5427 final KeyEvent keyEvent = (KeyEvent)event; 5428 return keyEvent.getAction() == KeyEvent.ACTION_UP; 5429 } else { 5430 final MotionEvent motionEvent = (MotionEvent)event; 5431 final int action = motionEvent.getAction(); 5432 return action == MotionEvent.ACTION_UP 5433 || action == MotionEvent.ACTION_CANCEL 5434 || action == MotionEvent.ACTION_HOVER_EXIT; 5435 } 5436 } 5437 5438 void scheduleConsumeBatchedInput() { 5439 if (!mConsumeBatchedInputScheduled) { 5440 mConsumeBatchedInputScheduled = true; 5441 mChoreographer.postCallback(Choreographer.CALLBACK_INPUT, 5442 mConsumedBatchedInputRunnable, null); 5443 } 5444 } 5445 5446 void unscheduleConsumeBatchedInput() { 5447 if (mConsumeBatchedInputScheduled) { 5448 mConsumeBatchedInputScheduled = false; 5449 mChoreographer.removeCallbacks(Choreographer.CALLBACK_INPUT, 5450 mConsumedBatchedInputRunnable, null); 5451 } 5452 } 5453 5454 void doConsumeBatchedInput(long frameTimeNanos) { 5455 if (mConsumeBatchedInputScheduled) { 5456 mConsumeBatchedInputScheduled = false; 5457 if (mInputEventReceiver != null) { 5458 mInputEventReceiver.consumeBatchedInputEvents(frameTimeNanos); 5459 } 5460 doProcessInputEvents(); 5461 } 5462 } 5463 5464 final class TraversalRunnable implements Runnable { 5465 @Override 5466 public void run() { 5467 doTraversal(); 5468 } 5469 } 5470 final TraversalRunnable mTraversalRunnable = new TraversalRunnable(); 5471 5472 final class WindowInputEventReceiver extends InputEventReceiver { 5473 public WindowInputEventReceiver(InputChannel inputChannel, Looper looper) { 5474 super(inputChannel, looper); 5475 } 5476 5477 @Override 5478 public void onInputEvent(InputEvent event) { 5479 enqueueInputEvent(event, this, 0, true); 5480 } 5481 5482 @Override 5483 public void onBatchedInputEventPending() { 5484 scheduleConsumeBatchedInput(); 5485 } 5486 5487 @Override 5488 public void dispose() { 5489 unscheduleConsumeBatchedInput(); 5490 super.dispose(); 5491 } 5492 } 5493 WindowInputEventReceiver mInputEventReceiver; 5494 5495 final class ConsumeBatchedInputRunnable implements Runnable { 5496 @Override 5497 public void run() { 5498 doConsumeBatchedInput(mChoreographer.getFrameTimeNanos()); 5499 } 5500 } 5501 final ConsumeBatchedInputRunnable mConsumedBatchedInputRunnable = 5502 new ConsumeBatchedInputRunnable(); 5503 boolean mConsumeBatchedInputScheduled; 5504 5505 final class InvalidateOnAnimationRunnable implements Runnable { 5506 private boolean mPosted; 5507 private ArrayList<View> mViews = new ArrayList<View>(); 5508 private ArrayList<AttachInfo.InvalidateInfo> mViewRects = 5509 new ArrayList<AttachInfo.InvalidateInfo>(); 5510 private View[] mTempViews; 5511 private AttachInfo.InvalidateInfo[] mTempViewRects; 5512 5513 public void addView(View view) { 5514 synchronized (this) { 5515 mViews.add(view); 5516 postIfNeededLocked(); 5517 } 5518 } 5519 5520 public void addViewRect(AttachInfo.InvalidateInfo info) { 5521 synchronized (this) { 5522 mViewRects.add(info); 5523 postIfNeededLocked(); 5524 } 5525 } 5526 5527 public void removeView(View view) { 5528 synchronized (this) { 5529 mViews.remove(view); 5530 5531 for (int i = mViewRects.size(); i-- > 0; ) { 5532 AttachInfo.InvalidateInfo info = mViewRects.get(i); 5533 if (info.target == view) { 5534 mViewRects.remove(i); 5535 info.recycle(); 5536 } 5537 } 5538 5539 if (mPosted && mViews.isEmpty() && mViewRects.isEmpty()) { 5540 mChoreographer.removeCallbacks(Choreographer.CALLBACK_ANIMATION, this, null); 5541 mPosted = false; 5542 } 5543 } 5544 } 5545 5546 @Override 5547 public void run() { 5548 final int viewCount; 5549 final int viewRectCount; 5550 synchronized (this) { 5551 mPosted = false; 5552 5553 viewCount = mViews.size(); 5554 if (viewCount != 0) { 5555 mTempViews = mViews.toArray(mTempViews != null 5556 ? mTempViews : new View[viewCount]); 5557 mViews.clear(); 5558 } 5559 5560 viewRectCount = mViewRects.size(); 5561 if (viewRectCount != 0) { 5562 mTempViewRects = mViewRects.toArray(mTempViewRects != null 5563 ? mTempViewRects : new AttachInfo.InvalidateInfo[viewRectCount]); 5564 mViewRects.clear(); 5565 } 5566 } 5567 5568 for (int i = 0; i < viewCount; i++) { 5569 mTempViews[i].invalidate(); 5570 mTempViews[i] = null; 5571 } 5572 5573 for (int i = 0; i < viewRectCount; i++) { 5574 final View.AttachInfo.InvalidateInfo info = mTempViewRects[i]; 5575 info.target.invalidate(info.left, info.top, info.right, info.bottom); 5576 info.recycle(); 5577 } 5578 } 5579 5580 private void postIfNeededLocked() { 5581 if (!mPosted) { 5582 mChoreographer.postCallback(Choreographer.CALLBACK_ANIMATION, this, null); 5583 mPosted = true; 5584 } 5585 } 5586 } 5587 final InvalidateOnAnimationRunnable mInvalidateOnAnimationRunnable = 5588 new InvalidateOnAnimationRunnable(); 5589 5590 public void dispatchInvalidateDelayed(View view, long delayMilliseconds) { 5591 Message msg = mHandler.obtainMessage(MSG_INVALIDATE, view); 5592 mHandler.sendMessageDelayed(msg, delayMilliseconds); 5593 } 5594 5595 public void dispatchInvalidateRectDelayed(AttachInfo.InvalidateInfo info, 5596 long delayMilliseconds) { 5597 final Message msg = mHandler.obtainMessage(MSG_INVALIDATE_RECT, info); 5598 mHandler.sendMessageDelayed(msg, delayMilliseconds); 5599 } 5600 5601 public void dispatchInvalidateOnAnimation(View view) { 5602 mInvalidateOnAnimationRunnable.addView(view); 5603 } 5604 5605 public void dispatchInvalidateRectOnAnimation(AttachInfo.InvalidateInfo info) { 5606 mInvalidateOnAnimationRunnable.addViewRect(info); 5607 } 5608 5609 public void enqueueDisplayList(DisplayList displayList) { 5610 mDisplayLists.add(displayList); 5611 } 5612 5613 public void cancelInvalidate(View view) { 5614 mHandler.removeMessages(MSG_INVALIDATE, view); 5615 // fixme: might leak the AttachInfo.InvalidateInfo objects instead of returning 5616 // them to the pool 5617 mHandler.removeMessages(MSG_INVALIDATE_RECT, view); 5618 mInvalidateOnAnimationRunnable.removeView(view); 5619 } 5620 5621 public void dispatchKey(KeyEvent event) { 5622 Message msg = mHandler.obtainMessage(MSG_DISPATCH_KEY, event); 5623 msg.setAsynchronous(true); 5624 mHandler.sendMessage(msg); 5625 } 5626 5627 public void dispatchKeyFromIme(KeyEvent event) { 5628 Message msg = mHandler.obtainMessage(MSG_DISPATCH_KEY_FROM_IME, event); 5629 msg.setAsynchronous(true); 5630 mHandler.sendMessage(msg); 5631 } 5632 5633 public void dispatchUnhandledKey(KeyEvent event) { 5634 if ((event.getFlags() & KeyEvent.FLAG_FALLBACK) == 0) { 5635 final KeyCharacterMap kcm = event.getKeyCharacterMap(); 5636 final int keyCode = event.getKeyCode(); 5637 final int metaState = event.getMetaState(); 5638 5639 // Check for fallback actions specified by the key character map. 5640 KeyCharacterMap.FallbackAction fallbackAction = 5641 kcm.getFallbackAction(keyCode, metaState); 5642 if (fallbackAction != null) { 5643 final int flags = event.getFlags() | KeyEvent.FLAG_FALLBACK; 5644 KeyEvent fallbackEvent = KeyEvent.obtain( 5645 event.getDownTime(), event.getEventTime(), 5646 event.getAction(), fallbackAction.keyCode, 5647 event.getRepeatCount(), fallbackAction.metaState, 5648 event.getDeviceId(), event.getScanCode(), 5649 flags, event.getSource(), null); 5650 fallbackAction.recycle(); 5651 5652 dispatchKey(fallbackEvent); 5653 } 5654 } 5655 } 5656 5657 public void dispatchAppVisibility(boolean visible) { 5658 Message msg = mHandler.obtainMessage(MSG_DISPATCH_APP_VISIBILITY); 5659 msg.arg1 = visible ? 1 : 0; 5660 mHandler.sendMessage(msg); 5661 } 5662 5663 public void dispatchScreenStateChange(boolean on) { 5664 Message msg = mHandler.obtainMessage(MSG_DISPATCH_SCREEN_STATE); 5665 msg.arg1 = on ? 1 : 0; 5666 mHandler.sendMessage(msg); 5667 } 5668 5669 public void dispatchGetNewSurface() { 5670 Message msg = mHandler.obtainMessage(MSG_DISPATCH_GET_NEW_SURFACE); 5671 mHandler.sendMessage(msg); 5672 } 5673 5674 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 5675 Message msg = Message.obtain(); 5676 msg.what = MSG_WINDOW_FOCUS_CHANGED; 5677 msg.arg1 = hasFocus ? 1 : 0; 5678 msg.arg2 = inTouchMode ? 1 : 0; 5679 mHandler.sendMessage(msg); 5680 } 5681 5682 public void dispatchCloseSystemDialogs(String reason) { 5683 Message msg = Message.obtain(); 5684 msg.what = MSG_CLOSE_SYSTEM_DIALOGS; 5685 msg.obj = reason; 5686 mHandler.sendMessage(msg); 5687 } 5688 5689 public void dispatchDragEvent(DragEvent event) { 5690 final int what; 5691 if (event.getAction() == DragEvent.ACTION_DRAG_LOCATION) { 5692 what = MSG_DISPATCH_DRAG_LOCATION_EVENT; 5693 mHandler.removeMessages(what); 5694 } else { 5695 what = MSG_DISPATCH_DRAG_EVENT; 5696 } 5697 Message msg = mHandler.obtainMessage(what, event); 5698 mHandler.sendMessage(msg); 5699 } 5700 5701 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 5702 int localValue, int localChanges) { 5703 SystemUiVisibilityInfo args = new SystemUiVisibilityInfo(); 5704 args.seq = seq; 5705 args.globalVisibility = globalVisibility; 5706 args.localValue = localValue; 5707 args.localChanges = localChanges; 5708 mHandler.sendMessage(mHandler.obtainMessage(MSG_DISPATCH_SYSTEM_UI_VISIBILITY, args)); 5709 } 5710 5711 public void dispatchDoneAnimating() { 5712 mHandler.sendEmptyMessage(MSG_DISPATCH_DONE_ANIMATING); 5713 } 5714 5715 public void dispatchCheckFocus() { 5716 if (!mHandler.hasMessages(MSG_CHECK_FOCUS)) { 5717 // This will result in a call to checkFocus() below. 5718 mHandler.sendEmptyMessage(MSG_CHECK_FOCUS); 5719 } 5720 } 5721 5722 /** 5723 * Post a callback to send a 5724 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 5725 * This event is send at most once every 5726 * {@link ViewConfiguration#getSendRecurringAccessibilityEventsInterval()}. 5727 */ 5728 private void postSendWindowContentChangedCallback(View source) { 5729 if (mSendWindowContentChangedAccessibilityEvent == null) { 5730 mSendWindowContentChangedAccessibilityEvent = 5731 new SendWindowContentChangedAccessibilityEvent(); 5732 } 5733 mSendWindowContentChangedAccessibilityEvent.runOrPost(source); 5734 } 5735 5736 /** 5737 * Remove a posted callback to send a 5738 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 5739 */ 5740 private void removeSendWindowContentChangedCallback() { 5741 if (mSendWindowContentChangedAccessibilityEvent != null) { 5742 mHandler.removeCallbacks(mSendWindowContentChangedAccessibilityEvent); 5743 } 5744 } 5745 5746 public boolean showContextMenuForChild(View originalView) { 5747 return false; 5748 } 5749 5750 public ActionMode startActionModeForChild(View originalView, ActionMode.Callback callback) { 5751 return null; 5752 } 5753 5754 public void createContextMenu(ContextMenu menu) { 5755 } 5756 5757 public void childDrawableStateChanged(View child) { 5758 } 5759 5760 public boolean requestSendAccessibilityEvent(View child, AccessibilityEvent event) { 5761 if (mView == null) { 5762 return false; 5763 } 5764 // Intercept accessibility focus events fired by virtual nodes to keep 5765 // track of accessibility focus position in such nodes. 5766 final int eventType = event.getEventType(); 5767 switch (eventType) { 5768 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUSED: { 5769 final long sourceNodeId = event.getSourceNodeId(); 5770 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 5771 sourceNodeId); 5772 View source = mView.findViewByAccessibilityId(accessibilityViewId); 5773 if (source != null) { 5774 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 5775 if (provider != null) { 5776 AccessibilityNodeInfo node = provider.createAccessibilityNodeInfo( 5777 AccessibilityNodeInfo.getVirtualDescendantId(sourceNodeId)); 5778 setAccessibilityFocus(source, node); 5779 } 5780 } 5781 } break; 5782 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUS_CLEARED: { 5783 final long sourceNodeId = event.getSourceNodeId(); 5784 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 5785 sourceNodeId); 5786 View source = mView.findViewByAccessibilityId(accessibilityViewId); 5787 if (source != null) { 5788 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 5789 if (provider != null) { 5790 setAccessibilityFocus(null, null); 5791 } 5792 } 5793 } break; 5794 } 5795 mAccessibilityManager.sendAccessibilityEvent(event); 5796 return true; 5797 } 5798 5799 @Override 5800 public void childAccessibilityStateChanged(View child) { 5801 postSendWindowContentChangedCallback(child); 5802 } 5803 5804 @Override 5805 public boolean canResolveLayoutDirection() { 5806 return true; 5807 } 5808 5809 @Override 5810 public boolean isLayoutDirectionResolved() { 5811 return true; 5812 } 5813 5814 @Override 5815 public int getLayoutDirection() { 5816 return View.LAYOUT_DIRECTION_RESOLVED_DEFAULT; 5817 } 5818 5819 @Override 5820 public boolean canResolveTextDirection() { 5821 return true; 5822 } 5823 5824 @Override 5825 public boolean isTextDirectionResolved() { 5826 return true; 5827 } 5828 5829 @Override 5830 public int getTextDirection() { 5831 return View.TEXT_DIRECTION_RESOLVED_DEFAULT; 5832 } 5833 5834 @Override 5835 public boolean canResolveTextAlignment() { 5836 return true; 5837 } 5838 5839 @Override 5840 public boolean isTextAlignmentResolved() { 5841 return true; 5842 } 5843 5844 @Override 5845 public int getTextAlignment() { 5846 return View.TEXT_ALIGNMENT_RESOLVED_DEFAULT; 5847 } 5848 5849 private View getCommonPredecessor(View first, View second) { 5850 if (mAttachInfo != null) { 5851 if (mTempHashSet == null) { 5852 mTempHashSet = new HashSet<View>(); 5853 } 5854 HashSet<View> seen = mTempHashSet; 5855 seen.clear(); 5856 View firstCurrent = first; 5857 while (firstCurrent != null) { 5858 seen.add(firstCurrent); 5859 ViewParent firstCurrentParent = firstCurrent.mParent; 5860 if (firstCurrentParent instanceof View) { 5861 firstCurrent = (View) firstCurrentParent; 5862 } else { 5863 firstCurrent = null; 5864 } 5865 } 5866 View secondCurrent = second; 5867 while (secondCurrent != null) { 5868 if (seen.contains(secondCurrent)) { 5869 seen.clear(); 5870 return secondCurrent; 5871 } 5872 ViewParent secondCurrentParent = secondCurrent.mParent; 5873 if (secondCurrentParent instanceof View) { 5874 secondCurrent = (View) secondCurrentParent; 5875 } else { 5876 secondCurrent = null; 5877 } 5878 } 5879 seen.clear(); 5880 } 5881 return null; 5882 } 5883 5884 void checkThread() { 5885 if (mThread != Thread.currentThread()) { 5886 throw new CalledFromWrongThreadException( 5887 "Only the original thread that created a view hierarchy can touch its views."); 5888 } 5889 } 5890 5891 public void requestDisallowInterceptTouchEvent(boolean disallowIntercept) { 5892 // ViewAncestor never intercepts touch event, so this can be a no-op 5893 } 5894 5895 public boolean requestChildRectangleOnScreen(View child, Rect rectangle, boolean immediate) { 5896 final boolean scrolled = scrollToRectOrFocus(rectangle, immediate); 5897 if (rectangle != null) { 5898 mTempRect.set(rectangle); 5899 mTempRect.offset(0, -mCurScrollY); 5900 mTempRect.offset(mAttachInfo.mWindowLeft, mAttachInfo.mWindowTop); 5901 try { 5902 mWindowSession.onRectangleOnScreenRequested(mWindow, mTempRect, immediate); 5903 } catch (RemoteException re) { 5904 /* ignore */ 5905 } 5906 } 5907 return scrolled; 5908 } 5909 5910 public void childHasTransientStateChanged(View child, boolean hasTransientState) { 5911 // Do nothing. 5912 } 5913 5914 class TakenSurfaceHolder extends BaseSurfaceHolder { 5915 @Override 5916 public boolean onAllowLockCanvas() { 5917 return mDrawingAllowed; 5918 } 5919 5920 @Override 5921 public void onRelayoutContainer() { 5922 // Not currently interesting -- from changing between fixed and layout size. 5923 } 5924 5925 public void setFormat(int format) { 5926 ((RootViewSurfaceTaker)mView).setSurfaceFormat(format); 5927 } 5928 5929 public void setType(int type) { 5930 ((RootViewSurfaceTaker)mView).setSurfaceType(type); 5931 } 5932 5933 @Override 5934 public void onUpdateSurface() { 5935 // We take care of format and type changes on our own. 5936 throw new IllegalStateException("Shouldn't be here"); 5937 } 5938 5939 public boolean isCreating() { 5940 return mIsCreating; 5941 } 5942 5943 @Override 5944 public void setFixedSize(int width, int height) { 5945 throw new UnsupportedOperationException( 5946 "Currently only support sizing from layout"); 5947 } 5948 5949 public void setKeepScreenOn(boolean screenOn) { 5950 ((RootViewSurfaceTaker)mView).setSurfaceKeepScreenOn(screenOn); 5951 } 5952 } 5953 5954 static class W extends IWindow.Stub { 5955 private final WeakReference<ViewRootImpl> mViewAncestor; 5956 private final IWindowSession mWindowSession; 5957 5958 W(ViewRootImpl viewAncestor) { 5959 mViewAncestor = new WeakReference<ViewRootImpl>(viewAncestor); 5960 mWindowSession = viewAncestor.mWindowSession; 5961 } 5962 5963 public void resized(Rect frame, Rect overscanInsets, Rect contentInsets, 5964 Rect visibleInsets, boolean reportDraw, Configuration newConfig) { 5965 final ViewRootImpl viewAncestor = mViewAncestor.get(); 5966 if (viewAncestor != null) { 5967 viewAncestor.dispatchResized(frame, overscanInsets, contentInsets, 5968 visibleInsets, reportDraw, newConfig); 5969 } 5970 } 5971 5972 @Override 5973 public void moved(int newX, int newY) { 5974 final ViewRootImpl viewAncestor = mViewAncestor.get(); 5975 if (viewAncestor != null) { 5976 viewAncestor.dispatchMoved(newX, newY); 5977 } 5978 } 5979 5980 public void dispatchAppVisibility(boolean visible) { 5981 final ViewRootImpl viewAncestor = mViewAncestor.get(); 5982 if (viewAncestor != null) { 5983 viewAncestor.dispatchAppVisibility(visible); 5984 } 5985 } 5986 5987 public void dispatchScreenState(boolean on) { 5988 final ViewRootImpl viewAncestor = mViewAncestor.get(); 5989 if (viewAncestor != null) { 5990 viewAncestor.dispatchScreenStateChange(on); 5991 } 5992 } 5993 5994 public void dispatchGetNewSurface() { 5995 final ViewRootImpl viewAncestor = mViewAncestor.get(); 5996 if (viewAncestor != null) { 5997 viewAncestor.dispatchGetNewSurface(); 5998 } 5999 } 6000 6001 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 6002 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6003 if (viewAncestor != null) { 6004 viewAncestor.windowFocusChanged(hasFocus, inTouchMode); 6005 } 6006 } 6007 6008 private static int checkCallingPermission(String permission) { 6009 try { 6010 return ActivityManagerNative.getDefault().checkPermission( 6011 permission, Binder.getCallingPid(), Binder.getCallingUid()); 6012 } catch (RemoteException e) { 6013 return PackageManager.PERMISSION_DENIED; 6014 } 6015 } 6016 6017 public void executeCommand(String command, String parameters, ParcelFileDescriptor out) { 6018 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6019 if (viewAncestor != null) { 6020 final View view = viewAncestor.mView; 6021 if (view != null) { 6022 if (checkCallingPermission(Manifest.permission.DUMP) != 6023 PackageManager.PERMISSION_GRANTED) { 6024 throw new SecurityException("Insufficient permissions to invoke" 6025 + " executeCommand() from pid=" + Binder.getCallingPid() 6026 + ", uid=" + Binder.getCallingUid()); 6027 } 6028 6029 OutputStream clientStream = null; 6030 try { 6031 clientStream = new ParcelFileDescriptor.AutoCloseOutputStream(out); 6032 ViewDebug.dispatchCommand(view, command, parameters, clientStream); 6033 } catch (IOException e) { 6034 e.printStackTrace(); 6035 } finally { 6036 if (clientStream != null) { 6037 try { 6038 clientStream.close(); 6039 } catch (IOException e) { 6040 e.printStackTrace(); 6041 } 6042 } 6043 } 6044 } 6045 } 6046 } 6047 6048 public void closeSystemDialogs(String reason) { 6049 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6050 if (viewAncestor != null) { 6051 viewAncestor.dispatchCloseSystemDialogs(reason); 6052 } 6053 } 6054 6055 public void dispatchWallpaperOffsets(float x, float y, float xStep, float yStep, 6056 boolean sync) { 6057 if (sync) { 6058 try { 6059 mWindowSession.wallpaperOffsetsComplete(asBinder()); 6060 } catch (RemoteException e) { 6061 } 6062 } 6063 } 6064 6065 public void dispatchWallpaperCommand(String action, int x, int y, 6066 int z, Bundle extras, boolean sync) { 6067 if (sync) { 6068 try { 6069 mWindowSession.wallpaperCommandComplete(asBinder(), null); 6070 } catch (RemoteException e) { 6071 } 6072 } 6073 } 6074 6075 /* Drag/drop */ 6076 public void dispatchDragEvent(DragEvent event) { 6077 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6078 if (viewAncestor != null) { 6079 viewAncestor.dispatchDragEvent(event); 6080 } 6081 } 6082 6083 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 6084 int localValue, int localChanges) { 6085 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6086 if (viewAncestor != null) { 6087 viewAncestor.dispatchSystemUiVisibilityChanged(seq, globalVisibility, 6088 localValue, localChanges); 6089 } 6090 } 6091 6092 public void doneAnimating() { 6093 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6094 if (viewAncestor != null) { 6095 viewAncestor.dispatchDoneAnimating(); 6096 } 6097 } 6098 } 6099 6100 public static final class CalledFromWrongThreadException extends AndroidRuntimeException { 6101 public CalledFromWrongThreadException(String msg) { 6102 super(msg); 6103 } 6104 } 6105 6106 private SurfaceHolder mHolder = new SurfaceHolder() { 6107 // we only need a SurfaceHolder for opengl. it would be nice 6108 // to implement everything else though, especially the callback 6109 // support (opengl doesn't make use of it right now, but eventually 6110 // will). 6111 public Surface getSurface() { 6112 return mSurface; 6113 } 6114 6115 public boolean isCreating() { 6116 return false; 6117 } 6118 6119 public void addCallback(Callback callback) { 6120 } 6121 6122 public void removeCallback(Callback callback) { 6123 } 6124 6125 public void setFixedSize(int width, int height) { 6126 } 6127 6128 public void setSizeFromLayout() { 6129 } 6130 6131 public void setFormat(int format) { 6132 } 6133 6134 public void setType(int type) { 6135 } 6136 6137 public void setKeepScreenOn(boolean screenOn) { 6138 } 6139 6140 public Canvas lockCanvas() { 6141 return null; 6142 } 6143 6144 public Canvas lockCanvas(Rect dirty) { 6145 return null; 6146 } 6147 6148 public void unlockCanvasAndPost(Canvas canvas) { 6149 } 6150 public Rect getSurfaceFrame() { 6151 return null; 6152 } 6153 }; 6154 6155 static RunQueue getRunQueue() { 6156 RunQueue rq = sRunQueues.get(); 6157 if (rq != null) { 6158 return rq; 6159 } 6160 rq = new RunQueue(); 6161 sRunQueues.set(rq); 6162 return rq; 6163 } 6164 6165 /** 6166 * The run queue is used to enqueue pending work from Views when no Handler is 6167 * attached. The work is executed during the next call to performTraversals on 6168 * the thread. 6169 * @hide 6170 */ 6171 static final class RunQueue { 6172 private final ArrayList<HandlerAction> mActions = new ArrayList<HandlerAction>(); 6173 6174 void post(Runnable action) { 6175 postDelayed(action, 0); 6176 } 6177 6178 void postDelayed(Runnable action, long delayMillis) { 6179 HandlerAction handlerAction = new HandlerAction(); 6180 handlerAction.action = action; 6181 handlerAction.delay = delayMillis; 6182 6183 synchronized (mActions) { 6184 mActions.add(handlerAction); 6185 } 6186 } 6187 6188 void removeCallbacks(Runnable action) { 6189 final HandlerAction handlerAction = new HandlerAction(); 6190 handlerAction.action = action; 6191 6192 synchronized (mActions) { 6193 final ArrayList<HandlerAction> actions = mActions; 6194 6195 while (actions.remove(handlerAction)) { 6196 // Keep going 6197 } 6198 } 6199 } 6200 6201 void executeActions(Handler handler) { 6202 synchronized (mActions) { 6203 final ArrayList<HandlerAction> actions = mActions; 6204 final int count = actions.size(); 6205 6206 for (int i = 0; i < count; i++) { 6207 final HandlerAction handlerAction = actions.get(i); 6208 handler.postDelayed(handlerAction.action, handlerAction.delay); 6209 } 6210 6211 actions.clear(); 6212 } 6213 } 6214 6215 private static class HandlerAction { 6216 Runnable action; 6217 long delay; 6218 6219 @Override 6220 public boolean equals(Object o) { 6221 if (this == o) return true; 6222 if (o == null || getClass() != o.getClass()) return false; 6223 6224 HandlerAction that = (HandlerAction) o; 6225 return !(action != null ? !action.equals(that.action) : that.action != null); 6226 6227 } 6228 6229 @Override 6230 public int hashCode() { 6231 int result = action != null ? action.hashCode() : 0; 6232 result = 31 * result + (int) (delay ^ (delay >>> 32)); 6233 return result; 6234 } 6235 } 6236 } 6237 6238 /** 6239 * Class for managing the accessibility interaction connection 6240 * based on the global accessibility state. 6241 */ 6242 final class AccessibilityInteractionConnectionManager 6243 implements AccessibilityStateChangeListener { 6244 public void onAccessibilityStateChanged(boolean enabled) { 6245 if (enabled) { 6246 ensureConnection(); 6247 if (mAttachInfo != null && mAttachInfo.mHasWindowFocus) { 6248 mView.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 6249 View focusedView = mView.findFocus(); 6250 if (focusedView != null && focusedView != mView) { 6251 focusedView.sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_FOCUSED); 6252 } 6253 } 6254 } else { 6255 ensureNoConnection(); 6256 mHandler.obtainMessage(MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST).sendToTarget(); 6257 } 6258 } 6259 6260 public void ensureConnection() { 6261 if (mAttachInfo != null) { 6262 final boolean registered = 6263 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED; 6264 if (!registered) { 6265 mAttachInfo.mAccessibilityWindowId = 6266 mAccessibilityManager.addAccessibilityInteractionConnection(mWindow, 6267 new AccessibilityInteractionConnection(ViewRootImpl.this)); 6268 } 6269 } 6270 } 6271 6272 public void ensureNoConnection() { 6273 final boolean registered = 6274 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED; 6275 if (registered) { 6276 mAttachInfo.mAccessibilityWindowId = AccessibilityNodeInfo.UNDEFINED; 6277 mAccessibilityManager.removeAccessibilityInteractionConnection(mWindow); 6278 } 6279 } 6280 } 6281 6282 /** 6283 * This class is an interface this ViewAncestor provides to the 6284 * AccessibilityManagerService to the latter can interact with 6285 * the view hierarchy in this ViewAncestor. 6286 */ 6287 static final class AccessibilityInteractionConnection 6288 extends IAccessibilityInteractionConnection.Stub { 6289 private final WeakReference<ViewRootImpl> mViewRootImpl; 6290 6291 AccessibilityInteractionConnection(ViewRootImpl viewRootImpl) { 6292 mViewRootImpl = new WeakReference<ViewRootImpl>(viewRootImpl); 6293 } 6294 6295 @Override 6296 public void findAccessibilityNodeInfoByAccessibilityId(long accessibilityNodeId, 6297 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 6298 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6299 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6300 if (viewRootImpl != null && viewRootImpl.mView != null) { 6301 viewRootImpl.getAccessibilityInteractionController() 6302 .findAccessibilityNodeInfoByAccessibilityIdClientThread(accessibilityNodeId, 6303 interactionId, callback, flags, interrogatingPid, interrogatingTid, 6304 spec); 6305 } else { 6306 // We cannot make the call and notify the caller so it does not wait. 6307 try { 6308 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 6309 } catch (RemoteException re) { 6310 /* best effort - ignore */ 6311 } 6312 } 6313 } 6314 6315 @Override 6316 public void performAccessibilityAction(long accessibilityNodeId, int action, 6317 Bundle arguments, int interactionId, 6318 IAccessibilityInteractionConnectionCallback callback, int flags, 6319 int interogatingPid, long interrogatingTid) { 6320 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6321 if (viewRootImpl != null && viewRootImpl.mView != null) { 6322 viewRootImpl.getAccessibilityInteractionController() 6323 .performAccessibilityActionClientThread(accessibilityNodeId, action, arguments, 6324 interactionId, callback, flags, interogatingPid, interrogatingTid); 6325 } else { 6326 // We cannot make the call and notify the caller so it does not wait. 6327 try { 6328 callback.setPerformAccessibilityActionResult(false, interactionId); 6329 } catch (RemoteException re) { 6330 /* best effort - ignore */ 6331 } 6332 } 6333 } 6334 6335 @Override 6336 public void findAccessibilityNodeInfosByViewId(long accessibilityNodeId, 6337 String viewId, int interactionId, 6338 IAccessibilityInteractionConnectionCallback callback, int flags, 6339 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6340 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6341 if (viewRootImpl != null && viewRootImpl.mView != null) { 6342 viewRootImpl.getAccessibilityInteractionController() 6343 .findAccessibilityNodeInfosByViewIdClientThread(accessibilityNodeId, 6344 viewId, interactionId, callback, flags, interrogatingPid, 6345 interrogatingTid, spec); 6346 } else { 6347 // We cannot make the call and notify the caller so it does not wait. 6348 try { 6349 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6350 } catch (RemoteException re) { 6351 /* best effort - ignore */ 6352 } 6353 } 6354 } 6355 6356 @Override 6357 public void findAccessibilityNodeInfosByText(long accessibilityNodeId, String text, 6358 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 6359 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6360 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6361 if (viewRootImpl != null && viewRootImpl.mView != null) { 6362 viewRootImpl.getAccessibilityInteractionController() 6363 .findAccessibilityNodeInfosByTextClientThread(accessibilityNodeId, text, 6364 interactionId, callback, flags, interrogatingPid, interrogatingTid, 6365 spec); 6366 } else { 6367 // We cannot make the call and notify the caller so it does not wait. 6368 try { 6369 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 6370 } catch (RemoteException re) { 6371 /* best effort - ignore */ 6372 } 6373 } 6374 } 6375 6376 @Override 6377 public void findFocus(long accessibilityNodeId, int focusType, int interactionId, 6378 IAccessibilityInteractionConnectionCallback callback, int flags, 6379 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6380 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6381 if (viewRootImpl != null && viewRootImpl.mView != null) { 6382 viewRootImpl.getAccessibilityInteractionController() 6383 .findFocusClientThread(accessibilityNodeId, focusType, interactionId, callback, 6384 flags, interrogatingPid, interrogatingTid, spec); 6385 } else { 6386 // We cannot make the call and notify the caller so it does not wait. 6387 try { 6388 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6389 } catch (RemoteException re) { 6390 /* best effort - ignore */ 6391 } 6392 } 6393 } 6394 6395 @Override 6396 public void focusSearch(long accessibilityNodeId, int direction, int interactionId, 6397 IAccessibilityInteractionConnectionCallback callback, int flags, 6398 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6399 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6400 if (viewRootImpl != null && viewRootImpl.mView != null) { 6401 viewRootImpl.getAccessibilityInteractionController() 6402 .focusSearchClientThread(accessibilityNodeId, direction, interactionId, 6403 callback, flags, interrogatingPid, interrogatingTid, spec); 6404 } else { 6405 // We cannot make the call and notify the caller so it does not wait. 6406 try { 6407 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6408 } catch (RemoteException re) { 6409 /* best effort - ignore */ 6410 } 6411 } 6412 } 6413 } 6414 6415 private class SendWindowContentChangedAccessibilityEvent implements Runnable { 6416 public View mSource; 6417 public long mLastEventTimeMillis; 6418 6419 public void run() { 6420 mLastEventTimeMillis = SystemClock.uptimeMillis(); 6421 AccessibilityEvent event = AccessibilityEvent.obtain(); 6422 event.setEventType(AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED); 6423 event.setContentChangeType(AccessibilityEvent.CONTENT_CHANGE_TYPE_SUBTREE); 6424 mSource.sendAccessibilityEventUnchecked(event); 6425 mSource.resetSubtreeAccessibilityStateChanged(); 6426 mSource = null; 6427 } 6428 6429 public void runOrPost(View source) { 6430 if (mSource != null) { 6431 mSource = getCommonPredecessor(mSource, source); 6432 return; 6433 } 6434 mSource = source; 6435 final long timeSinceLastMillis = SystemClock.uptimeMillis() - mLastEventTimeMillis; 6436 final long minEventIntevalMillis = 6437 ViewConfiguration.getSendRecurringAccessibilityEventsInterval(); 6438 if (timeSinceLastMillis >= minEventIntevalMillis) { 6439 mSource.removeCallbacks(this); 6440 run(); 6441 } else { 6442 mSource.postDelayed(this, minEventIntevalMillis - timeSinceLastMillis); 6443 } 6444 } 6445 } 6446} 6447