ViewRootImpl.java revision 3d678ad462ee237d86efd9d985eb518817761e05
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.hardware.display.DisplayManager; 40import android.hardware.display.DisplayManager.DisplayListener; 41import android.media.AudioManager; 42import android.os.Binder; 43import android.os.Bundle; 44import android.os.Debug; 45import android.os.Handler; 46import android.os.Looper; 47import android.os.Message; 48import android.os.ParcelFileDescriptor; 49import android.os.PowerManager; 50import android.os.Process; 51import android.os.RemoteException; 52import android.os.SystemClock; 53import android.os.SystemProperties; 54import android.os.Trace; 55import android.util.AndroidRuntimeException; 56import android.util.DisplayMetrics; 57import android.util.Log; 58import android.util.Slog; 59import android.util.TypedValue; 60import android.view.View.AttachInfo; 61import android.view.View.MeasureSpec; 62import android.view.accessibility.AccessibilityEvent; 63import android.view.accessibility.AccessibilityManager; 64import android.view.accessibility.AccessibilityManager.AccessibilityStateChangeListener; 65import android.view.accessibility.AccessibilityNodeInfo; 66import android.view.accessibility.AccessibilityNodeProvider; 67import android.view.accessibility.IAccessibilityInteractionConnection; 68import android.view.accessibility.IAccessibilityInteractionConnectionCallback; 69import android.view.animation.AccelerateDecelerateInterpolator; 70import android.view.animation.Interpolator; 71import android.view.inputmethod.InputConnection; 72import android.view.inputmethod.InputMethodManager; 73import android.view.Surface.OutOfResourcesException; 74import android.widget.Scroller; 75 76import com.android.internal.R; 77import com.android.internal.os.SomeArgs; 78import com.android.internal.policy.PolicyManager; 79import com.android.internal.view.BaseSurfaceHolder; 80import com.android.internal.view.RootViewSurfaceTaker; 81 82import java.io.FileDescriptor; 83import java.io.IOException; 84import java.io.OutputStream; 85import java.io.PrintWriter; 86import java.lang.ref.WeakReference; 87import java.util.ArrayList; 88import java.util.HashSet; 89 90/** 91 * The top of a view hierarchy, implementing the needed protocol between View 92 * and the WindowManager. This is for the most part an internal implementation 93 * detail of {@link WindowManagerGlobal}. 94 * 95 * {@hide} 96 */ 97@SuppressWarnings({"EmptyCatchBlock", "PointlessBooleanExpression"}) 98public final class ViewRootImpl implements ViewParent, 99 View.AttachInfo.Callbacks, HardwareRenderer.HardwareDrawCallbacks { 100 private static final String TAG = "ViewRootImpl"; 101 private static final boolean DBG = false; 102 private static final boolean LOCAL_LOGV = false; 103 /** @noinspection PointlessBooleanExpression*/ 104 private static final boolean DEBUG_DRAW = false || LOCAL_LOGV; 105 private static final boolean DEBUG_LAYOUT = false || LOCAL_LOGV; 106 private static final boolean DEBUG_DIALOG = false || LOCAL_LOGV; 107 private static final boolean DEBUG_INPUT_RESIZE = false || LOCAL_LOGV; 108 private static final boolean DEBUG_ORIENTATION = false || LOCAL_LOGV; 109 private static final boolean DEBUG_TRACKBALL = false || LOCAL_LOGV; 110 private static final boolean DEBUG_IMF = false || LOCAL_LOGV; 111 private static final boolean DEBUG_CONFIGURATION = false || LOCAL_LOGV; 112 private static final boolean DEBUG_FPS = false; 113 private static final boolean DEBUG_INPUT_PROCESSING = false || LOCAL_LOGV; 114 115 /** 116 * Set this system property to true to force the view hierarchy to render 117 * at 60 Hz. This can be used to measure the potential framerate. 118 */ 119 private static final String PROPERTY_PROFILE_RENDERING = "viewroot.profile_rendering"; 120 private static final String PROPERTY_MEDIA_DISABLED = "config.disable_media"; 121 122 /** 123 * Maximum time we allow the user to roll the trackball enough to generate 124 * a key event, before resetting the counters. 125 */ 126 static final int MAX_TRACKBALL_DELAY = 250; 127 128 static final ThreadLocal<RunQueue> sRunQueues = new ThreadLocal<RunQueue>(); 129 130 static final ArrayList<Runnable> sFirstDrawHandlers = new ArrayList<Runnable>(); 131 static boolean sFirstDrawComplete = false; 132 133 static final ArrayList<ComponentCallbacks> sConfigCallbacks 134 = new ArrayList<ComponentCallbacks>(); 135 136 final Context mContext; 137 final IWindowSession mWindowSession; 138 final Display mDisplay; 139 final DisplayManager mDisplayManager; 140 final String mBasePackageName; 141 142 final int[] mTmpLocation = new int[2]; 143 144 final TypedValue mTmpValue = new TypedValue(); 145 146 final Thread mThread; 147 148 final WindowLeaked mLocation; 149 150 final WindowManager.LayoutParams mWindowAttributes = new WindowManager.LayoutParams(); 151 152 final W mWindow; 153 154 final int mTargetSdkVersion; 155 156 int mSeq; 157 158 View mView; 159 160 View mAccessibilityFocusedHost; 161 AccessibilityNodeInfo mAccessibilityFocusedVirtualView; 162 163 int mViewVisibility; 164 boolean mAppVisible = true; 165 int mOrigWindowType = -1; 166 167 // Set to true if the owner of this window is in the stopped state, 168 // so the window should no longer be active. 169 boolean mStopped = false; 170 171 boolean mLastInCompatMode = false; 172 173 SurfaceHolder.Callback2 mSurfaceHolderCallback; 174 BaseSurfaceHolder mSurfaceHolder; 175 boolean mIsCreating; 176 boolean mDrawingAllowed; 177 178 final Region mTransparentRegion; 179 final Region mPreviousTransparentRegion; 180 181 int mWidth; 182 int mHeight; 183 Rect mDirty; 184 final Rect mCurrentDirty = new Rect(); 185 boolean mIsAnimating; 186 187 CompatibilityInfo.Translator mTranslator; 188 189 final View.AttachInfo mAttachInfo; 190 InputChannel mInputChannel; 191 InputQueue.Callback mInputQueueCallback; 192 InputQueue mInputQueue; 193 FallbackEventHandler mFallbackEventHandler; 194 Choreographer mChoreographer; 195 196 final Rect mTempRect; // used in the transaction to not thrash the heap. 197 final Rect mVisRect; // used to retrieve visible rect of focused view. 198 199 boolean mTraversalScheduled; 200 int mTraversalBarrier; 201 boolean mWillDrawSoon; 202 /** Set to true while in performTraversals for detecting when die(true) is called from internal 203 * callbacks such as onMeasure, onPreDraw, onDraw and deferring doDie() until later. */ 204 boolean mIsInTraversal; 205 boolean mFitSystemWindowsRequested; 206 boolean mLayoutRequested; 207 boolean mFirst; 208 boolean mReportNextDraw; 209 boolean mFullRedrawNeeded; 210 boolean mNewSurfaceNeeded; 211 boolean mHasHadWindowFocus; 212 boolean mLastWasImTarget; 213 boolean mWindowsAnimating; 214 boolean mDrawDuringWindowsAnimating; 215 boolean mIsDrawing; 216 int mLastSystemUiVisibility; 217 int mClientWindowLayoutFlags; 218 boolean mLastOverscanRequested; 219 220 // Pool of queued input events. 221 private static final int MAX_QUEUED_INPUT_EVENT_POOL_SIZE = 10; 222 private QueuedInputEvent mQueuedInputEventPool; 223 private int mQueuedInputEventPoolSize; 224 225 /* Input event queue. 226 * Pending input events are input events waiting to be delivered to the input stages 227 * and handled by the application. 228 */ 229 QueuedInputEvent mPendingInputEventHead; 230 QueuedInputEvent mPendingInputEventTail; 231 int mPendingInputEventCount; 232 boolean mProcessInputEventsScheduled; 233 String mPendingInputEventQueueLengthCounterName = "pq"; 234 235 InputStage mFirstInputStage; 236 InputStage mFirstPostImeInputStage; 237 238 boolean mWindowAttributesChanged = false; 239 int mWindowAttributesChangesFlag = 0; 240 241 // These can be accessed by any thread, must be protected with a lock. 242 // Surface can never be reassigned or cleared (use Surface.clear()). 243 private final Surface mSurface = new Surface(); 244 245 boolean mAdded; 246 boolean mAddedTouchMode; 247 248 final DisplayAdjustments mDisplayAdjustments; 249 250 // These are accessed by multiple threads. 251 final Rect mWinFrame; // frame given by window manager. 252 253 final Rect mPendingOverscanInsets = new Rect(); 254 final Rect mPendingVisibleInsets = new Rect(); 255 final Rect mPendingContentInsets = new Rect(); 256 final ViewTreeObserver.InternalInsetsInfo mLastGivenInsets 257 = new ViewTreeObserver.InternalInsetsInfo(); 258 259 final Rect mFitSystemWindowsInsets = new Rect(); 260 261 final Configuration mLastConfiguration = new Configuration(); 262 final Configuration mPendingConfiguration = new Configuration(); 263 264 boolean mScrollMayChange; 265 int mSoftInputMode; 266 WeakReference<View> mLastScrolledFocus; 267 int mScrollY; 268 int mCurScrollY; 269 Scroller mScroller; 270 HardwareLayer mResizeBuffer; 271 long mResizeBufferStartTime; 272 int mResizeBufferDuration; 273 static final Interpolator mResizeInterpolator = new AccelerateDecelerateInterpolator(); 274 private ArrayList<LayoutTransition> mPendingTransitions; 275 276 final ViewConfiguration mViewConfiguration; 277 278 /* Drag/drop */ 279 ClipDescription mDragDescription; 280 View mCurrentDragView; 281 volatile Object mLocalDragState; 282 final PointF mDragPoint = new PointF(); 283 final PointF mLastTouchPoint = new PointF(); 284 285 private boolean mProfileRendering; 286 private Choreographer.FrameCallback mRenderProfiler; 287 private boolean mRenderProfilingEnabled; 288 289 private boolean mMediaDisabled; 290 291 // Variables to track frames per second, enabled via DEBUG_FPS flag 292 private long mFpsStartTime = -1; 293 private long mFpsPrevTime = -1; 294 private int mFpsNumFrames; 295 296 private final ArrayList<DisplayList> mDisplayLists = new ArrayList<DisplayList>(); 297 298 /** 299 * see {@link #playSoundEffect(int)} 300 */ 301 AudioManager mAudioManager; 302 303 final AccessibilityManager mAccessibilityManager; 304 305 AccessibilityInteractionController mAccessibilityInteractionController; 306 307 AccessibilityInteractionConnectionManager mAccessibilityInteractionConnectionManager; 308 309 SendWindowContentChangedAccessibilityEvent mSendWindowContentChangedAccessibilityEvent; 310 311 HashSet<View> mTempHashSet; 312 313 private final int mDensity; 314 private final int mNoncompatDensity; 315 316 private boolean mInLayout = false; 317 ArrayList<View> mLayoutRequesters = new ArrayList<View>(); 318 boolean mHandlingLayoutInLayoutRequest = false; 319 320 private int mViewLayoutDirectionInitial; 321 322 /** Set to true once doDie() has been called. */ 323 private boolean mRemoved; 324 325 /** 326 * Consistency verifier for debugging purposes. 327 */ 328 protected final InputEventConsistencyVerifier mInputEventConsistencyVerifier = 329 InputEventConsistencyVerifier.isInstrumentationEnabled() ? 330 new InputEventConsistencyVerifier(this, 0) : null; 331 332 static final class SystemUiVisibilityInfo { 333 int seq; 334 int globalVisibility; 335 int localValue; 336 int localChanges; 337 } 338 339 public ViewRootImpl(Context context, Display display) { 340 mContext = context; 341 mWindowSession = WindowManagerGlobal.getWindowSession(); 342 mDisplay = display; 343 mBasePackageName = context.getBasePackageName(); 344 345 mDisplayAdjustments = display.getDisplayAdjustments(); 346 347 mThread = Thread.currentThread(); 348 mLocation = new WindowLeaked(null); 349 mLocation.fillInStackTrace(); 350 mWidth = -1; 351 mHeight = -1; 352 mDirty = new Rect(); 353 mTempRect = new Rect(); 354 mVisRect = new Rect(); 355 mWinFrame = new Rect(); 356 mWindow = new W(this); 357 mTargetSdkVersion = context.getApplicationInfo().targetSdkVersion; 358 mViewVisibility = View.GONE; 359 mTransparentRegion = new Region(); 360 mPreviousTransparentRegion = new Region(); 361 mFirst = true; // true for the first time the view is added 362 mAdded = false; 363 mAccessibilityManager = AccessibilityManager.getInstance(context); 364 mAccessibilityInteractionConnectionManager = 365 new AccessibilityInteractionConnectionManager(); 366 mAccessibilityManager.addAccessibilityStateChangeListener( 367 mAccessibilityInteractionConnectionManager); 368 mAttachInfo = new View.AttachInfo(mWindowSession, mWindow, display, this, mHandler, this); 369 mViewConfiguration = ViewConfiguration.get(context); 370 mDensity = context.getResources().getDisplayMetrics().densityDpi; 371 mNoncompatDensity = context.getResources().getDisplayMetrics().noncompatDensityDpi; 372 mFallbackEventHandler = PolicyManager.makeNewFallbackEventHandler(context); 373 mChoreographer = Choreographer.getInstance(); 374 mDisplayManager = (DisplayManager)context.getSystemService(Context.DISPLAY_SERVICE); 375 loadSystemProperties(); 376 } 377 378 public static void addFirstDrawHandler(Runnable callback) { 379 synchronized (sFirstDrawHandlers) { 380 if (!sFirstDrawComplete) { 381 sFirstDrawHandlers.add(callback); 382 } 383 } 384 } 385 386 public static void addConfigCallback(ComponentCallbacks callback) { 387 synchronized (sConfigCallbacks) { 388 sConfigCallbacks.add(callback); 389 } 390 } 391 392 // FIXME for perf testing only 393 private boolean mProfile = false; 394 395 /** 396 * Call this to profile the next traversal call. 397 * FIXME for perf testing only. Remove eventually 398 */ 399 public void profile() { 400 mProfile = true; 401 } 402 403 /** 404 * Indicates whether we are in touch mode. Calling this method triggers an IPC 405 * call and should be avoided whenever possible. 406 * 407 * @return True, if the device is in touch mode, false otherwise. 408 * 409 * @hide 410 */ 411 static boolean isInTouchMode() { 412 IWindowSession windowSession = WindowManagerGlobal.peekWindowSession(); 413 if (windowSession != null) { 414 try { 415 return windowSession.getInTouchMode(); 416 } catch (RemoteException e) { 417 } 418 } 419 return false; 420 } 421 422 /** 423 * We have one child 424 */ 425 public void setView(View view, WindowManager.LayoutParams attrs, View panelParentView) { 426 synchronized (this) { 427 if (mView == null) { 428 mView = view; 429 430 mAttachInfo.mDisplayState = mDisplay.getState(); 431 mDisplayManager.registerDisplayListener(mDisplayListener, mHandler); 432 433 mViewLayoutDirectionInitial = mView.getRawLayoutDirection(); 434 mFallbackEventHandler.setView(view); 435 mWindowAttributes.copyFrom(attrs); 436 if (mWindowAttributes.packageName == null) { 437 mWindowAttributes.packageName = mBasePackageName; 438 } 439 attrs = mWindowAttributes; 440 // Keep track of the actual window flags supplied by the client. 441 mClientWindowLayoutFlags = attrs.flags; 442 443 setAccessibilityFocus(null, null); 444 445 if (view instanceof RootViewSurfaceTaker) { 446 mSurfaceHolderCallback = 447 ((RootViewSurfaceTaker)view).willYouTakeTheSurface(); 448 if (mSurfaceHolderCallback != null) { 449 mSurfaceHolder = new TakenSurfaceHolder(); 450 mSurfaceHolder.setFormat(PixelFormat.UNKNOWN); 451 } 452 } 453 454 CompatibilityInfo compatibilityInfo = mDisplayAdjustments.getCompatibilityInfo(); 455 mTranslator = compatibilityInfo.getTranslator(); 456 mDisplayAdjustments.setActivityToken(attrs.token); 457 458 // If the application owns the surface, don't enable hardware acceleration 459 if (mSurfaceHolder == null) { 460 enableHardwareAcceleration(attrs); 461 } 462 463 boolean restore = false; 464 if (mTranslator != null) { 465 mSurface.setCompatibilityTranslator(mTranslator); 466 restore = true; 467 attrs.backup(); 468 mTranslator.translateWindowLayout(attrs); 469 } 470 if (DEBUG_LAYOUT) Log.d(TAG, "WindowLayout in setView:" + attrs); 471 472 if (!compatibilityInfo.supportsScreen()) { 473 attrs.privateFlags |= WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 474 mLastInCompatMode = true; 475 } 476 477 mSoftInputMode = attrs.softInputMode; 478 mWindowAttributesChanged = true; 479 mWindowAttributesChangesFlag = WindowManager.LayoutParams.EVERYTHING_CHANGED; 480 mAttachInfo.mRootView = view; 481 mAttachInfo.mScalingRequired = mTranslator != null; 482 mAttachInfo.mApplicationScale = 483 mTranslator == null ? 1.0f : mTranslator.applicationScale; 484 if (panelParentView != null) { 485 mAttachInfo.mPanelParentWindowToken 486 = panelParentView.getApplicationWindowToken(); 487 } 488 mAdded = true; 489 int res; /* = WindowManagerImpl.ADD_OKAY; */ 490 491 // Schedule the first layout -before- adding to the window 492 // manager, to make sure we do the relayout before receiving 493 // any other events from the system. 494 requestLayout(); 495 if ((mWindowAttributes.inputFeatures 496 & WindowManager.LayoutParams.INPUT_FEATURE_NO_INPUT_CHANNEL) == 0) { 497 mInputChannel = new InputChannel(); 498 } 499 try { 500 mOrigWindowType = mWindowAttributes.type; 501 mAttachInfo.mRecomputeGlobalAttributes = true; 502 collectViewAttributes(); 503 res = mWindowSession.addToDisplay(mWindow, mSeq, mWindowAttributes, 504 getHostVisibility(), mDisplay.getDisplayId(), 505 mAttachInfo.mContentInsets, mInputChannel); 506 } catch (RemoteException e) { 507 mAdded = false; 508 mView = null; 509 mAttachInfo.mRootView = null; 510 mInputChannel = null; 511 mFallbackEventHandler.setView(null); 512 unscheduleTraversals(); 513 setAccessibilityFocus(null, null); 514 throw new RuntimeException("Adding window failed", e); 515 } finally { 516 if (restore) { 517 attrs.restore(); 518 } 519 } 520 521 if (mTranslator != null) { 522 mTranslator.translateRectInScreenToAppWindow(mAttachInfo.mContentInsets); 523 } 524 mPendingOverscanInsets.set(0, 0, 0, 0); 525 mPendingContentInsets.set(mAttachInfo.mContentInsets); 526 mPendingVisibleInsets.set(0, 0, 0, 0); 527 if (DEBUG_LAYOUT) Log.v(TAG, "Added window " + mWindow); 528 if (res < WindowManagerGlobal.ADD_OKAY) { 529 mAttachInfo.mRootView = null; 530 mAdded = false; 531 mFallbackEventHandler.setView(null); 532 unscheduleTraversals(); 533 setAccessibilityFocus(null, null); 534 switch (res) { 535 case WindowManagerGlobal.ADD_BAD_APP_TOKEN: 536 case WindowManagerGlobal.ADD_BAD_SUBWINDOW_TOKEN: 537 throw new WindowManager.BadTokenException( 538 "Unable to add window -- token " + attrs.token 539 + " is not valid; is your activity running?"); 540 case WindowManagerGlobal.ADD_NOT_APP_TOKEN: 541 throw new WindowManager.BadTokenException( 542 "Unable to add window -- token " + attrs.token 543 + " is not for an application"); 544 case WindowManagerGlobal.ADD_APP_EXITING: 545 throw new WindowManager.BadTokenException( 546 "Unable to add window -- app for token " + attrs.token 547 + " is exiting"); 548 case WindowManagerGlobal.ADD_DUPLICATE_ADD: 549 throw new WindowManager.BadTokenException( 550 "Unable to add window -- window " + mWindow 551 + " has already been added"); 552 case WindowManagerGlobal.ADD_STARTING_NOT_NEEDED: 553 // Silently ignore -- we would have just removed it 554 // right away, anyway. 555 return; 556 case WindowManagerGlobal.ADD_MULTIPLE_SINGLETON: 557 throw new WindowManager.BadTokenException( 558 "Unable to add window " + mWindow + 559 " -- another window of this type already exists"); 560 case WindowManagerGlobal.ADD_PERMISSION_DENIED: 561 throw new WindowManager.BadTokenException( 562 "Unable to add window " + mWindow + 563 " -- permission denied for this window type"); 564 case WindowManagerGlobal.ADD_INVALID_DISPLAY: 565 throw new WindowManager.InvalidDisplayException( 566 "Unable to add window " + mWindow + 567 " -- the specified display can not be found"); 568 } 569 throw new RuntimeException( 570 "Unable to add window -- unknown error code " + res); 571 } 572 573 if (view instanceof RootViewSurfaceTaker) { 574 mInputQueueCallback = 575 ((RootViewSurfaceTaker)view).willYouTakeTheInputQueue(); 576 } 577 if (mInputChannel != null) { 578 if (mInputQueueCallback != null) { 579 mInputQueue = new InputQueue(); 580 mInputQueueCallback.onInputQueueCreated(mInputQueue); 581 } 582 mInputEventReceiver = new WindowInputEventReceiver(mInputChannel, 583 Looper.myLooper()); 584 } 585 586 view.assignParent(this); 587 mAddedTouchMode = (res & WindowManagerGlobal.ADD_FLAG_IN_TOUCH_MODE) != 0; 588 mAppVisible = (res & WindowManagerGlobal.ADD_FLAG_APP_VISIBLE) != 0; 589 590 if (mAccessibilityManager.isEnabled()) { 591 mAccessibilityInteractionConnectionManager.ensureConnection(); 592 } 593 594 if (view.getImportantForAccessibility() == View.IMPORTANT_FOR_ACCESSIBILITY_AUTO) { 595 view.setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_YES); 596 } 597 598 // Set up the input pipeline. 599 CharSequence counterSuffix = attrs.getTitle(); 600 InputStage syntheticInputStage = new SyntheticInputStage(); 601 InputStage viewPostImeStage = new ViewPostImeInputStage(syntheticInputStage); 602 InputStage nativePostImeStage = new NativePostImeInputStage(viewPostImeStage, 603 "aq:native-post-ime:" + counterSuffix); 604 InputStage earlyPostImeStage = new EarlyPostImeInputStage(nativePostImeStage); 605 InputStage imeStage = new ImeInputStage(earlyPostImeStage, 606 "aq:ime:" + counterSuffix); 607 InputStage viewPreImeStage = new ViewPreImeInputStage(imeStage); 608 InputStage nativePreImeStage = new NativePreImeInputStage(viewPreImeStage, 609 "aq:native-pre-ime:" + counterSuffix); 610 611 mFirstInputStage = nativePreImeStage; 612 mFirstPostImeInputStage = earlyPostImeStage; 613 mPendingInputEventQueueLengthCounterName = "aq:pending:" + counterSuffix; 614 } 615 } 616 } 617 618 /** Whether the window is in local focus mode or not */ 619 private boolean isInLocalFocusMode() { 620 return (mWindowAttributes.flags & WindowManager.LayoutParams.FLAG_LOCAL_FOCUS_MODE) != 0; 621 } 622 623 void destroyHardwareResources() { 624 invalidateDisplayLists(); 625 if (mAttachInfo.mHardwareRenderer != null) { 626 mAttachInfo.mHardwareRenderer.destroyHardwareResources(mView); 627 mAttachInfo.mHardwareRenderer.destroy(false); 628 } 629 } 630 631 void destroyHardwareLayers() { 632 if (mThread != Thread.currentThread()) { 633 if (mAttachInfo.mHardwareRenderer != null && 634 mAttachInfo.mHardwareRenderer.isEnabled()) { 635 HardwareRenderer.trimMemory(ComponentCallbacks2.TRIM_MEMORY_MODERATE); 636 } 637 } else { 638 invalidateDisplayLists(); 639 if (mAttachInfo.mHardwareRenderer != null && 640 mAttachInfo.mHardwareRenderer.isEnabled()) { 641 mAttachInfo.mHardwareRenderer.destroyLayers(mView); 642 } 643 } 644 } 645 646 void pushHardwareLayerUpdate(HardwareLayer layer) { 647 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled()) { 648 mAttachInfo.mHardwareRenderer.pushLayerUpdate(layer); 649 } 650 } 651 652 void flushHardwareLayerUpdates() { 653 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled() && 654 mAttachInfo.mHardwareRenderer.validate()) { 655 mAttachInfo.mHardwareRenderer.flushLayerUpdates(); 656 } 657 } 658 659 void dispatchFlushHardwareLayerUpdates() { 660 mHandler.removeMessages(MSG_FLUSH_LAYER_UPDATES); 661 mHandler.sendMessageAtFrontOfQueue(mHandler.obtainMessage(MSG_FLUSH_LAYER_UPDATES)); 662 } 663 664 public boolean attachFunctor(long functor) { 665 //noinspection SimplifiableIfStatement 666 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled()) { 667 return mAttachInfo.mHardwareRenderer.attachFunctor(mAttachInfo, functor); 668 } 669 return false; 670 } 671 672 public void detachFunctor(long functor) { 673 if (mAttachInfo.mHardwareRenderer != null) { 674 mAttachInfo.mHardwareRenderer.detachFunctor(functor); 675 } 676 } 677 678 private void enableHardwareAcceleration(WindowManager.LayoutParams attrs) { 679 mAttachInfo.mHardwareAccelerated = false; 680 mAttachInfo.mHardwareAccelerationRequested = false; 681 682 // Don't enable hardware acceleration when the application is in compatibility mode 683 if (mTranslator != null) return; 684 685 // Try to enable hardware acceleration if requested 686 final boolean hardwareAccelerated = 687 (attrs.flags & WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED) != 0; 688 689 if (hardwareAccelerated) { 690 if (!HardwareRenderer.isAvailable()) { 691 return; 692 } 693 694 // Persistent processes (including the system) should not do 695 // accelerated rendering on low-end devices. In that case, 696 // sRendererDisabled will be set. In addition, the system process 697 // itself should never do accelerated rendering. In that case, both 698 // sRendererDisabled and sSystemRendererDisabled are set. When 699 // sSystemRendererDisabled is set, PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED 700 // can be used by code on the system process to escape that and enable 701 // HW accelerated drawing. (This is basically for the lock screen.) 702 703 final boolean fakeHwAccelerated = (attrs.privateFlags & 704 WindowManager.LayoutParams.PRIVATE_FLAG_FAKE_HARDWARE_ACCELERATED) != 0; 705 final boolean forceHwAccelerated = (attrs.privateFlags & 706 WindowManager.LayoutParams.PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED) != 0; 707 708 if (!HardwareRenderer.sRendererDisabled || (HardwareRenderer.sSystemRendererDisabled 709 && forceHwAccelerated)) { 710 // Don't enable hardware acceleration when we're not on the main thread 711 if (!HardwareRenderer.sSystemRendererDisabled && 712 Looper.getMainLooper() != Looper.myLooper()) { 713 Log.w(HardwareRenderer.LOG_TAG, "Attempting to initialize hardware " 714 + "acceleration outside of the main thread, aborting"); 715 return; 716 } 717 718 if (mAttachInfo.mHardwareRenderer != null) { 719 mAttachInfo.mHardwareRenderer.destroy(true); 720 } 721 722 final boolean translucent = attrs.format != PixelFormat.OPAQUE; 723 mAttachInfo.mHardwareRenderer = HardwareRenderer.createGlRenderer(2, translucent); 724 if (mAttachInfo.mHardwareRenderer != null) { 725 mAttachInfo.mHardwareRenderer.setName(attrs.getTitle().toString()); 726 mAttachInfo.mHardwareAccelerated = 727 mAttachInfo.mHardwareAccelerationRequested = true; 728 } 729 } else if (fakeHwAccelerated) { 730 // The window had wanted to use hardware acceleration, but this 731 // is not allowed in its process. By setting this flag, it can 732 // still render as if it was accelerated. This is basically for 733 // the preview windows the window manager shows for launching 734 // applications, so they will look more like the app being launched. 735 mAttachInfo.mHardwareAccelerationRequested = true; 736 } 737 } 738 } 739 740 public View getView() { 741 return mView; 742 } 743 744 final WindowLeaked getLocation() { 745 return mLocation; 746 } 747 748 void setLayoutParams(WindowManager.LayoutParams attrs, boolean newView) { 749 synchronized (this) { 750 int oldSoftInputMode = mWindowAttributes.softInputMode; 751 // Keep track of the actual window flags supplied by the client. 752 mClientWindowLayoutFlags = attrs.flags; 753 // preserve compatible window flag if exists. 754 int compatibleWindowFlag = mWindowAttributes.privateFlags 755 & WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 756 // transfer over system UI visibility values as they carry current state. 757 attrs.systemUiVisibility = mWindowAttributes.systemUiVisibility; 758 attrs.subtreeSystemUiVisibility = mWindowAttributes.subtreeSystemUiVisibility; 759 mWindowAttributesChangesFlag = mWindowAttributes.copyFrom(attrs); 760 if ((mWindowAttributesChangesFlag 761 & WindowManager.LayoutParams.TRANSLUCENT_FLAGS_CHANGED) != 0) { 762 // Recompute system ui visibility. 763 mAttachInfo.mRecomputeGlobalAttributes = true; 764 } 765 if (mWindowAttributes.packageName == null) { 766 mWindowAttributes.packageName = mBasePackageName; 767 } 768 mWindowAttributes.privateFlags |= compatibleWindowFlag; 769 770 applyKeepScreenOnFlag(mWindowAttributes); 771 772 if (newView) { 773 mSoftInputMode = attrs.softInputMode; 774 requestLayout(); 775 } 776 // Don't lose the mode we last auto-computed. 777 if ((attrs.softInputMode&WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 778 == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 779 mWindowAttributes.softInputMode = (mWindowAttributes.softInputMode 780 & ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 781 | (oldSoftInputMode 782 & WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST); 783 } 784 mWindowAttributesChanged = true; 785 scheduleTraversals(); 786 } 787 } 788 789 void handleAppVisibility(boolean visible) { 790 if (mAppVisible != visible) { 791 mAppVisible = visible; 792 scheduleTraversals(); 793 } 794 } 795 796 void handleGetNewSurface() { 797 mNewSurfaceNeeded = true; 798 mFullRedrawNeeded = true; 799 scheduleTraversals(); 800 } 801 802 private final DisplayListener mDisplayListener = new DisplayListener() { 803 @Override 804 public void onDisplayChanged(int displayId) { 805 if (mView != null && mDisplay.getDisplayId() == displayId) { 806 final int oldDisplayState = mAttachInfo.mDisplayState; 807 final int newDisplayState = mDisplay.getState(); 808 if (oldDisplayState != newDisplayState) { 809 mAttachInfo.mDisplayState = newDisplayState; 810 if (oldDisplayState != Display.STATE_UNKNOWN) { 811 final int oldScreenState = toViewScreenState(oldDisplayState); 812 final int newScreenState = toViewScreenState(newDisplayState); 813 if (oldScreenState != newScreenState) { 814 mView.dispatchScreenStateChanged(newScreenState); 815 } 816 if (oldDisplayState == Display.STATE_OFF) { 817 // Draw was suppressed so we need to for it to happen here. 818 mFullRedrawNeeded = true; 819 scheduleTraversals(); 820 } 821 } 822 } 823 } 824 } 825 826 @Override 827 public void onDisplayRemoved(int displayId) { 828 } 829 830 @Override 831 public void onDisplayAdded(int displayId) { 832 } 833 834 private int toViewScreenState(int displayState) { 835 return displayState == Display.STATE_OFF ? 836 View.SCREEN_STATE_OFF : View.SCREEN_STATE_ON; 837 } 838 }; 839 840 @Override 841 public void requestFitSystemWindows() { 842 checkThread(); 843 mFitSystemWindowsRequested = true; 844 scheduleTraversals(); 845 } 846 847 @Override 848 public void requestLayout() { 849 if (!mHandlingLayoutInLayoutRequest) { 850 checkThread(); 851 mLayoutRequested = true; 852 scheduleTraversals(); 853 } 854 } 855 856 @Override 857 public boolean isLayoutRequested() { 858 return mLayoutRequested; 859 } 860 861 void invalidate() { 862 mDirty.set(0, 0, mWidth, mHeight); 863 scheduleTraversals(); 864 } 865 866 void invalidateWorld(View view) { 867 view.invalidate(); 868 if (view instanceof ViewGroup) { 869 ViewGroup parent = (ViewGroup) view; 870 for (int i = 0; i < parent.getChildCount(); i++) { 871 invalidateWorld(parent.getChildAt(i)); 872 } 873 } 874 } 875 876 @Override 877 public void invalidateChild(View child, Rect dirty) { 878 invalidateChildInParent(null, dirty); 879 } 880 881 @Override 882 public ViewParent invalidateChildInParent(int[] location, Rect dirty) { 883 checkThread(); 884 if (DEBUG_DRAW) Log.v(TAG, "Invalidate child: " + dirty); 885 886 if (dirty == null) { 887 invalidate(); 888 return null; 889 } else if (dirty.isEmpty() && !mIsAnimating) { 890 return null; 891 } 892 893 if (mCurScrollY != 0 || mTranslator != null) { 894 mTempRect.set(dirty); 895 dirty = mTempRect; 896 if (mCurScrollY != 0) { 897 dirty.offset(0, -mCurScrollY); 898 } 899 if (mTranslator != null) { 900 mTranslator.translateRectInAppWindowToScreen(dirty); 901 } 902 if (mAttachInfo.mScalingRequired) { 903 dirty.inset(-1, -1); 904 } 905 } 906 907 final Rect localDirty = mDirty; 908 if (!localDirty.isEmpty() && !localDirty.contains(dirty)) { 909 mAttachInfo.mSetIgnoreDirtyState = true; 910 mAttachInfo.mIgnoreDirtyState = true; 911 } 912 913 // Add the new dirty rect to the current one 914 localDirty.union(dirty.left, dirty.top, dirty.right, dirty.bottom); 915 // Intersect with the bounds of the window to skip 916 // updates that lie outside of the visible region 917 final float appScale = mAttachInfo.mApplicationScale; 918 final boolean intersected = localDirty.intersect(0, 0, 919 (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 920 if (!intersected) { 921 localDirty.setEmpty(); 922 } 923 if (!mWillDrawSoon && (intersected || mIsAnimating)) { 924 scheduleTraversals(); 925 } 926 927 return null; 928 } 929 930 void setStopped(boolean stopped) { 931 if (mStopped != stopped) { 932 mStopped = stopped; 933 if (!stopped) { 934 scheduleTraversals(); 935 } 936 } 937 } 938 939 @Override 940 public ViewParent getParent() { 941 return null; 942 } 943 944 @Override 945 public boolean getChildVisibleRect(View child, Rect r, android.graphics.Point offset) { 946 if (child != mView) { 947 throw new RuntimeException("child is not mine, honest!"); 948 } 949 // Note: don't apply scroll offset, because we want to know its 950 // visibility in the virtual canvas being given to the view hierarchy. 951 return r.intersect(0, 0, mWidth, mHeight); 952 } 953 954 @Override 955 public void bringChildToFront(View child) { 956 } 957 958 int getHostVisibility() { 959 return mAppVisible ? mView.getVisibility() : View.GONE; 960 } 961 962 void disposeResizeBuffer() { 963 if (mResizeBuffer != null && mAttachInfo.mHardwareRenderer != null) { 964 mAttachInfo.mHardwareRenderer.safelyRun(new Runnable() { 965 @Override 966 public void run() { 967 mResizeBuffer.destroy(); 968 mResizeBuffer = null; 969 } 970 }); 971 } 972 } 973 974 /** 975 * Add LayoutTransition to the list of transitions to be started in the next traversal. 976 * This list will be cleared after the transitions on the list are start()'ed. These 977 * transitionsa re added by LayoutTransition itself when it sets up animations. The setup 978 * happens during the layout phase of traversal, which we want to complete before any of the 979 * animations are started (because those animations may side-effect properties that layout 980 * depends upon, like the bounding rectangles of the affected views). So we add the transition 981 * to the list and it is started just prior to starting the drawing phase of traversal. 982 * 983 * @param transition The LayoutTransition to be started on the next traversal. 984 * 985 * @hide 986 */ 987 public void requestTransitionStart(LayoutTransition transition) { 988 if (mPendingTransitions == null || !mPendingTransitions.contains(transition)) { 989 if (mPendingTransitions == null) { 990 mPendingTransitions = new ArrayList<LayoutTransition>(); 991 } 992 mPendingTransitions.add(transition); 993 } 994 } 995 996 void scheduleTraversals() { 997 if (!mTraversalScheduled) { 998 mTraversalScheduled = true; 999 mTraversalBarrier = mHandler.getLooper().postSyncBarrier(); 1000 mChoreographer.postCallback( 1001 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 1002 scheduleConsumeBatchedInput(); 1003 } 1004 } 1005 1006 void unscheduleTraversals() { 1007 if (mTraversalScheduled) { 1008 mTraversalScheduled = false; 1009 mHandler.getLooper().removeSyncBarrier(mTraversalBarrier); 1010 mChoreographer.removeCallbacks( 1011 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 1012 } 1013 } 1014 1015 void doTraversal() { 1016 if (mTraversalScheduled) { 1017 mTraversalScheduled = false; 1018 mHandler.getLooper().removeSyncBarrier(mTraversalBarrier); 1019 1020 if (mProfile) { 1021 Debug.startMethodTracing("ViewAncestor"); 1022 } 1023 1024 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "performTraversals"); 1025 try { 1026 performTraversals(); 1027 } finally { 1028 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 1029 } 1030 1031 if (mProfile) { 1032 Debug.stopMethodTracing(); 1033 mProfile = false; 1034 } 1035 } 1036 } 1037 1038 private void applyKeepScreenOnFlag(WindowManager.LayoutParams params) { 1039 // Update window's global keep screen on flag: if a view has requested 1040 // that the screen be kept on, then it is always set; otherwise, it is 1041 // set to whatever the client last requested for the global state. 1042 if (mAttachInfo.mKeepScreenOn) { 1043 params.flags |= WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON; 1044 } else { 1045 params.flags = (params.flags&~WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON) 1046 | (mClientWindowLayoutFlags&WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 1047 } 1048 } 1049 1050 private boolean collectViewAttributes() { 1051 final View.AttachInfo attachInfo = mAttachInfo; 1052 if (attachInfo.mRecomputeGlobalAttributes) { 1053 //Log.i(TAG, "Computing view hierarchy attributes!"); 1054 attachInfo.mRecomputeGlobalAttributes = false; 1055 boolean oldScreenOn = attachInfo.mKeepScreenOn; 1056 attachInfo.mKeepScreenOn = false; 1057 attachInfo.mSystemUiVisibility = 0; 1058 attachInfo.mHasSystemUiListeners = false; 1059 mView.dispatchCollectViewAttributes(attachInfo, 0); 1060 attachInfo.mSystemUiVisibility &= ~attachInfo.mDisabledSystemUiVisibility; 1061 WindowManager.LayoutParams params = mWindowAttributes; 1062 attachInfo.mSystemUiVisibility |= getImpliedSystemUiVisibility(params); 1063 if (attachInfo.mKeepScreenOn != oldScreenOn 1064 || attachInfo.mSystemUiVisibility != params.subtreeSystemUiVisibility 1065 || attachInfo.mHasSystemUiListeners != params.hasSystemUiListeners) { 1066 applyKeepScreenOnFlag(params); 1067 params.subtreeSystemUiVisibility = attachInfo.mSystemUiVisibility; 1068 params.hasSystemUiListeners = attachInfo.mHasSystemUiListeners; 1069 mView.dispatchWindowSystemUiVisiblityChanged(attachInfo.mSystemUiVisibility); 1070 return true; 1071 } 1072 } 1073 return false; 1074 } 1075 1076 private int getImpliedSystemUiVisibility(WindowManager.LayoutParams params) { 1077 int vis = 0; 1078 // Translucent decor window flags imply stable system ui visibility. 1079 if ((params.flags & WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS) != 0) { 1080 vis |= View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN; 1081 } 1082 if ((params.flags & WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION) != 0) { 1083 vis |= View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION; 1084 } 1085 return vis; 1086 } 1087 1088 private boolean measureHierarchy(final View host, final WindowManager.LayoutParams lp, 1089 final Resources res, final int desiredWindowWidth, final int desiredWindowHeight) { 1090 int childWidthMeasureSpec; 1091 int childHeightMeasureSpec; 1092 boolean windowSizeMayChange = false; 1093 1094 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) Log.v(TAG, 1095 "Measuring " + host + " in display " + desiredWindowWidth 1096 + "x" + desiredWindowHeight + "..."); 1097 1098 boolean goodMeasure = false; 1099 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT) { 1100 // On large screens, we don't want to allow dialogs to just 1101 // stretch to fill the entire width of the screen to display 1102 // one line of text. First try doing the layout at a smaller 1103 // size to see if it will fit. 1104 final DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1105 res.getValue(com.android.internal.R.dimen.config_prefDialogWidth, mTmpValue, true); 1106 int baseSize = 0; 1107 if (mTmpValue.type == TypedValue.TYPE_DIMENSION) { 1108 baseSize = (int)mTmpValue.getDimension(packageMetrics); 1109 } 1110 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": baseSize=" + baseSize); 1111 if (baseSize != 0 && desiredWindowWidth > baseSize) { 1112 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1113 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1114 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1115 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": measured (" 1116 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1117 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1118 goodMeasure = true; 1119 } else { 1120 // Didn't fit in that size... try expanding a bit. 1121 baseSize = (baseSize+desiredWindowWidth)/2; 1122 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": next baseSize=" 1123 + baseSize); 1124 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1125 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1126 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": measured (" 1127 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1128 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1129 if (DEBUG_DIALOG) Log.v(TAG, "Good!"); 1130 goodMeasure = true; 1131 } 1132 } 1133 } 1134 } 1135 1136 if (!goodMeasure) { 1137 childWidthMeasureSpec = getRootMeasureSpec(desiredWindowWidth, lp.width); 1138 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1139 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1140 if (mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) { 1141 windowSizeMayChange = true; 1142 } 1143 } 1144 1145 if (DBG) { 1146 System.out.println("======================================"); 1147 System.out.println("performTraversals -- after measure"); 1148 host.debug(); 1149 } 1150 1151 return windowSizeMayChange; 1152 } 1153 1154 void dispatchApplyInsets(View host) { 1155 mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets); 1156 host.dispatchApplyWindowInsets(new WindowInsets(mFitSystemWindowsInsets)); 1157 } 1158 1159 private void performTraversals() { 1160 // cache mView since it is used so much below... 1161 final View host = mView; 1162 1163 if (DBG) { 1164 System.out.println("======================================"); 1165 System.out.println("performTraversals"); 1166 host.debug(); 1167 } 1168 1169 if (host == null || !mAdded) 1170 return; 1171 1172 mIsInTraversal = true; 1173 mWillDrawSoon = true; 1174 boolean windowSizeMayChange = false; 1175 boolean newSurface = false; 1176 boolean surfaceChanged = false; 1177 WindowManager.LayoutParams lp = mWindowAttributes; 1178 1179 int desiredWindowWidth; 1180 int desiredWindowHeight; 1181 1182 final View.AttachInfo attachInfo = mAttachInfo; 1183 1184 final int viewVisibility = getHostVisibility(); 1185 boolean viewVisibilityChanged = mViewVisibility != viewVisibility 1186 || mNewSurfaceNeeded; 1187 1188 WindowManager.LayoutParams params = null; 1189 if (mWindowAttributesChanged) { 1190 mWindowAttributesChanged = false; 1191 surfaceChanged = true; 1192 params = lp; 1193 } 1194 CompatibilityInfo compatibilityInfo = mDisplayAdjustments.getCompatibilityInfo(); 1195 if (compatibilityInfo.supportsScreen() == mLastInCompatMode) { 1196 params = lp; 1197 mFullRedrawNeeded = true; 1198 mLayoutRequested = true; 1199 if (mLastInCompatMode) { 1200 params.privateFlags &= ~WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 1201 mLastInCompatMode = false; 1202 } else { 1203 params.privateFlags |= WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 1204 mLastInCompatMode = true; 1205 } 1206 } 1207 1208 mWindowAttributesChangesFlag = 0; 1209 1210 Rect frame = mWinFrame; 1211 if (mFirst) { 1212 mFullRedrawNeeded = true; 1213 mLayoutRequested = true; 1214 1215 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL 1216 || lp.type == WindowManager.LayoutParams.TYPE_INPUT_METHOD) { 1217 // NOTE -- system code, won't try to do compat mode. 1218 Point size = new Point(); 1219 mDisplay.getRealSize(size); 1220 desiredWindowWidth = size.x; 1221 desiredWindowHeight = size.y; 1222 } else { 1223 DisplayMetrics packageMetrics = 1224 mView.getContext().getResources().getDisplayMetrics(); 1225 desiredWindowWidth = packageMetrics.widthPixels; 1226 desiredWindowHeight = packageMetrics.heightPixels; 1227 } 1228 1229 // For the very first time, tell the view hierarchy that it 1230 // is attached to the window. Note that at this point the surface 1231 // object is not initialized to its backing store, but soon it 1232 // will be (assuming the window is visible). 1233 attachInfo.mSurface = mSurface; 1234 // We used to use the following condition to choose 32 bits drawing caches: 1235 // PixelFormat.hasAlpha(lp.format) || lp.format == PixelFormat.RGBX_8888 1236 // However, windows are now always 32 bits by default, so choose 32 bits 1237 attachInfo.mUse32BitDrawingCache = true; 1238 attachInfo.mHasWindowFocus = false; 1239 attachInfo.mWindowVisibility = viewVisibility; 1240 attachInfo.mRecomputeGlobalAttributes = false; 1241 viewVisibilityChanged = false; 1242 mLastConfiguration.setTo(host.getResources().getConfiguration()); 1243 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1244 // Set the layout direction if it has not been set before (inherit is the default) 1245 if (mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 1246 host.setLayoutDirection(mLastConfiguration.getLayoutDirection()); 1247 } 1248 host.dispatchAttachedToWindow(attachInfo, 0); 1249 attachInfo.mTreeObserver.dispatchOnWindowAttachedChange(true); 1250 dispatchApplyInsets(host); 1251 //Log.i(TAG, "Screen on initialized: " + attachInfo.mKeepScreenOn); 1252 1253 } else { 1254 desiredWindowWidth = frame.width(); 1255 desiredWindowHeight = frame.height(); 1256 if (desiredWindowWidth != mWidth || desiredWindowHeight != mHeight) { 1257 if (DEBUG_ORIENTATION) Log.v(TAG, 1258 "View " + host + " resized to: " + frame); 1259 mFullRedrawNeeded = true; 1260 mLayoutRequested = true; 1261 windowSizeMayChange = true; 1262 } 1263 } 1264 1265 if (viewVisibilityChanged) { 1266 attachInfo.mWindowVisibility = viewVisibility; 1267 host.dispatchWindowVisibilityChanged(viewVisibility); 1268 if (viewVisibility != View.VISIBLE || mNewSurfaceNeeded) { 1269 destroyHardwareResources(); 1270 } 1271 if (viewVisibility == View.GONE) { 1272 // After making a window gone, we will count it as being 1273 // shown for the first time the next time it gets focus. 1274 mHasHadWindowFocus = false; 1275 } 1276 } 1277 1278 // Execute enqueued actions on every traversal in case a detached view enqueued an action 1279 getRunQueue().executeActions(attachInfo.mHandler); 1280 1281 boolean insetsChanged = false; 1282 1283 boolean layoutRequested = mLayoutRequested && !mStopped; 1284 if (layoutRequested) { 1285 1286 final Resources res = mView.getContext().getResources(); 1287 1288 if (mFirst) { 1289 // make sure touch mode code executes by setting cached value 1290 // to opposite of the added touch mode. 1291 mAttachInfo.mInTouchMode = !mAddedTouchMode; 1292 ensureTouchModeLocally(mAddedTouchMode); 1293 } else { 1294 if (!mPendingOverscanInsets.equals(mAttachInfo.mOverscanInsets)) { 1295 insetsChanged = true; 1296 } 1297 if (!mPendingContentInsets.equals(mAttachInfo.mContentInsets)) { 1298 insetsChanged = true; 1299 } 1300 if (!mPendingVisibleInsets.equals(mAttachInfo.mVisibleInsets)) { 1301 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1302 if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: " 1303 + mAttachInfo.mVisibleInsets); 1304 } 1305 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT 1306 || lp.height == ViewGroup.LayoutParams.WRAP_CONTENT) { 1307 windowSizeMayChange = true; 1308 1309 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL 1310 || lp.type == WindowManager.LayoutParams.TYPE_INPUT_METHOD) { 1311 // NOTE -- system code, won't try to do compat mode. 1312 Point size = new Point(); 1313 mDisplay.getRealSize(size); 1314 desiredWindowWidth = size.x; 1315 desiredWindowHeight = size.y; 1316 } else { 1317 DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1318 desiredWindowWidth = packageMetrics.widthPixels; 1319 desiredWindowHeight = packageMetrics.heightPixels; 1320 } 1321 } 1322 } 1323 1324 // Ask host how big it wants to be 1325 windowSizeMayChange |= measureHierarchy(host, lp, res, 1326 desiredWindowWidth, desiredWindowHeight); 1327 } 1328 1329 if (collectViewAttributes()) { 1330 params = lp; 1331 } 1332 if (attachInfo.mForceReportNewAttributes) { 1333 attachInfo.mForceReportNewAttributes = false; 1334 params = lp; 1335 } 1336 1337 if (mFirst || attachInfo.mViewVisibilityChanged) { 1338 attachInfo.mViewVisibilityChanged = false; 1339 int resizeMode = mSoftInputMode & 1340 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST; 1341 // If we are in auto resize mode, then we need to determine 1342 // what mode to use now. 1343 if (resizeMode == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 1344 final int N = attachInfo.mScrollContainers.size(); 1345 for (int i=0; i<N; i++) { 1346 if (attachInfo.mScrollContainers.get(i).isShown()) { 1347 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE; 1348 } 1349 } 1350 if (resizeMode == 0) { 1351 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_PAN; 1352 } 1353 if ((lp.softInputMode & 1354 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) != resizeMode) { 1355 lp.softInputMode = (lp.softInputMode & 1356 ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) | 1357 resizeMode; 1358 params = lp; 1359 } 1360 } 1361 } 1362 1363 if (params != null) { 1364 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 1365 if (!PixelFormat.formatHasAlpha(params.format)) { 1366 params.format = PixelFormat.TRANSLUCENT; 1367 } 1368 } 1369 mAttachInfo.mOverscanRequested = (params.flags 1370 & WindowManager.LayoutParams.FLAG_LAYOUT_IN_OVERSCAN) != 0; 1371 } 1372 1373 if (mFitSystemWindowsRequested) { 1374 mFitSystemWindowsRequested = false; 1375 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1376 dispatchApplyInsets(host); 1377 if (mLayoutRequested) { 1378 // Short-circuit catching a new layout request here, so 1379 // we don't need to go through two layout passes when things 1380 // change due to fitting system windows, which can happen a lot. 1381 windowSizeMayChange |= measureHierarchy(host, lp, 1382 mView.getContext().getResources(), 1383 desiredWindowWidth, desiredWindowHeight); 1384 } 1385 } 1386 1387 if (layoutRequested) { 1388 // Clear this now, so that if anything requests a layout in the 1389 // rest of this function we will catch it and re-run a full 1390 // layout pass. 1391 mLayoutRequested = false; 1392 } 1393 1394 boolean windowShouldResize = layoutRequested && windowSizeMayChange 1395 && ((mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) 1396 || (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT && 1397 frame.width() < desiredWindowWidth && frame.width() != mWidth) 1398 || (lp.height == ViewGroup.LayoutParams.WRAP_CONTENT && 1399 frame.height() < desiredWindowHeight && frame.height() != mHeight)); 1400 1401 // Determine whether to compute insets. 1402 // If there are no inset listeners remaining then we may still need to compute 1403 // insets in case the old insets were non-empty and must be reset. 1404 final boolean computesInternalInsets = 1405 attachInfo.mTreeObserver.hasComputeInternalInsetsListeners() 1406 || attachInfo.mHasNonEmptyGivenInternalInsets; 1407 1408 boolean insetsPending = false; 1409 int relayoutResult = 0; 1410 1411 if (mFirst || windowShouldResize || insetsChanged || 1412 viewVisibilityChanged || params != null) { 1413 1414 if (viewVisibility == View.VISIBLE) { 1415 // If this window is giving internal insets to the window 1416 // manager, and it is being added or changing its visibility, 1417 // then we want to first give the window manager "fake" 1418 // insets to cause it to effectively ignore the content of 1419 // the window during layout. This avoids it briefly causing 1420 // other windows to resize/move based on the raw frame of the 1421 // window, waiting until we can finish laying out this window 1422 // and get back to the window manager with the ultimately 1423 // computed insets. 1424 insetsPending = computesInternalInsets && (mFirst || viewVisibilityChanged); 1425 } 1426 1427 if (mSurfaceHolder != null) { 1428 mSurfaceHolder.mSurfaceLock.lock(); 1429 mDrawingAllowed = true; 1430 } 1431 1432 boolean hwInitialized = false; 1433 boolean contentInsetsChanged = false; 1434 boolean hadSurface = mSurface.isValid(); 1435 1436 try { 1437 if (DEBUG_LAYOUT) { 1438 Log.i(TAG, "host=w:" + host.getMeasuredWidth() + ", h:" + 1439 host.getMeasuredHeight() + ", params=" + params); 1440 } 1441 1442 final int surfaceGenerationId = mSurface.getGenerationId(); 1443 relayoutResult = relayoutWindow(params, viewVisibility, insetsPending); 1444 if (!mDrawDuringWindowsAnimating && 1445 (relayoutResult & WindowManagerGlobal.RELAYOUT_RES_ANIMATING) != 0) { 1446 mWindowsAnimating = true; 1447 } 1448 1449 if (DEBUG_LAYOUT) Log.v(TAG, "relayout: frame=" + frame.toShortString() 1450 + " overscan=" + mPendingOverscanInsets.toShortString() 1451 + " content=" + mPendingContentInsets.toShortString() 1452 + " visible=" + mPendingVisibleInsets.toShortString() 1453 + " surface=" + mSurface); 1454 1455 if (mPendingConfiguration.seq != 0) { 1456 if (DEBUG_CONFIGURATION) Log.v(TAG, "Visible with new config: " 1457 + mPendingConfiguration); 1458 updateConfiguration(mPendingConfiguration, !mFirst); 1459 mPendingConfiguration.seq = 0; 1460 } 1461 1462 final boolean overscanInsetsChanged = !mPendingOverscanInsets.equals( 1463 mAttachInfo.mOverscanInsets); 1464 contentInsetsChanged = !mPendingContentInsets.equals( 1465 mAttachInfo.mContentInsets); 1466 final boolean visibleInsetsChanged = !mPendingVisibleInsets.equals( 1467 mAttachInfo.mVisibleInsets); 1468 if (contentInsetsChanged) { 1469 if (mWidth > 0 && mHeight > 0 && lp != null && 1470 ((lp.systemUiVisibility|lp.subtreeSystemUiVisibility) 1471 & View.SYSTEM_UI_LAYOUT_FLAGS) == 0 && 1472 mSurface != null && mSurface.isValid() && 1473 !mAttachInfo.mTurnOffWindowResizeAnim && 1474 mAttachInfo.mHardwareRenderer != null && 1475 mAttachInfo.mHardwareRenderer.isEnabled() && 1476 mAttachInfo.mHardwareRenderer.validate() && 1477 lp != null && !PixelFormat.formatHasAlpha(lp.format)) { 1478 1479 disposeResizeBuffer(); 1480 1481 boolean completed = false; 1482 HardwareCanvas hwRendererCanvas = mAttachInfo.mHardwareRenderer.getCanvas(); 1483 HardwareCanvas layerCanvas = null; 1484 try { 1485 if (mResizeBuffer == null) { 1486 mResizeBuffer = mAttachInfo.mHardwareRenderer.createHardwareLayer( 1487 mWidth, mHeight, false); 1488 } else if (mResizeBuffer.getWidth() != mWidth || 1489 mResizeBuffer.getHeight() != mHeight) { 1490 mResizeBuffer.resize(mWidth, mHeight); 1491 } 1492 // TODO: should handle create/resize failure 1493 layerCanvas = mResizeBuffer.start(hwRendererCanvas); 1494 final int restoreCount = layerCanvas.save(); 1495 1496 int yoff; 1497 final boolean scrolling = mScroller != null 1498 && mScroller.computeScrollOffset(); 1499 if (scrolling) { 1500 yoff = mScroller.getCurrY(); 1501 mScroller.abortAnimation(); 1502 } else { 1503 yoff = mScrollY; 1504 } 1505 1506 layerCanvas.translate(0, -yoff); 1507 if (mTranslator != null) { 1508 mTranslator.translateCanvas(layerCanvas); 1509 } 1510 1511 DisplayList displayList = mView.mDisplayList; 1512 if (displayList != null && displayList.isValid()) { 1513 layerCanvas.drawDisplayList(displayList, null, 1514 DisplayList.FLAG_CLIP_CHILDREN); 1515 } else { 1516 mView.draw(layerCanvas); 1517 } 1518 1519 drawAccessibilityFocusedDrawableIfNeeded(layerCanvas); 1520 1521 mResizeBufferStartTime = SystemClock.uptimeMillis(); 1522 mResizeBufferDuration = mView.getResources().getInteger( 1523 com.android.internal.R.integer.config_mediumAnimTime); 1524 completed = true; 1525 1526 layerCanvas.restoreToCount(restoreCount); 1527 } catch (OutOfMemoryError e) { 1528 Log.w(TAG, "Not enough memory for content change anim buffer", e); 1529 } finally { 1530 if (mResizeBuffer != null) { 1531 mResizeBuffer.end(hwRendererCanvas); 1532 if (!completed) { 1533 disposeResizeBuffer(); 1534 } 1535 } 1536 } 1537 } 1538 mAttachInfo.mContentInsets.set(mPendingContentInsets); 1539 if (DEBUG_LAYOUT) Log.v(TAG, "Content insets changing to: " 1540 + mAttachInfo.mContentInsets); 1541 } 1542 if (overscanInsetsChanged) { 1543 mAttachInfo.mOverscanInsets.set(mPendingOverscanInsets); 1544 if (DEBUG_LAYOUT) Log.v(TAG, "Overscan insets changing to: " 1545 + mAttachInfo.mOverscanInsets); 1546 // Need to relayout with content insets. 1547 contentInsetsChanged = true; 1548 } 1549 if (contentInsetsChanged || mLastSystemUiVisibility != 1550 mAttachInfo.mSystemUiVisibility || mFitSystemWindowsRequested 1551 || mLastOverscanRequested != mAttachInfo.mOverscanRequested) { 1552 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1553 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1554 mFitSystemWindowsRequested = false; 1555 dispatchApplyInsets(host); 1556 } 1557 if (visibleInsetsChanged) { 1558 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1559 if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: " 1560 + mAttachInfo.mVisibleInsets); 1561 } 1562 1563 if (!hadSurface) { 1564 if (mSurface.isValid()) { 1565 // If we are creating a new surface, then we need to 1566 // completely redraw it. Also, when we get to the 1567 // point of drawing it we will hold off and schedule 1568 // a new traversal instead. This is so we can tell the 1569 // window manager about all of the windows being displayed 1570 // before actually drawing them, so it can display then 1571 // all at once. 1572 newSurface = true; 1573 mFullRedrawNeeded = true; 1574 mPreviousTransparentRegion.setEmpty(); 1575 1576 if (mAttachInfo.mHardwareRenderer != null) { 1577 try { 1578 hwInitialized = mAttachInfo.mHardwareRenderer.initialize( 1579 mHolder.getSurface()); 1580 } catch (OutOfResourcesException e) { 1581 handleOutOfResourcesException(e); 1582 return; 1583 } 1584 } 1585 } 1586 } else if (!mSurface.isValid()) { 1587 // If the surface has been removed, then reset the scroll 1588 // positions. 1589 if (mLastScrolledFocus != null) { 1590 mLastScrolledFocus.clear(); 1591 } 1592 mScrollY = mCurScrollY = 0; 1593 if (mScroller != null) { 1594 mScroller.abortAnimation(); 1595 } 1596 disposeResizeBuffer(); 1597 // Our surface is gone 1598 if (mAttachInfo.mHardwareRenderer != null && 1599 mAttachInfo.mHardwareRenderer.isEnabled()) { 1600 mAttachInfo.mHardwareRenderer.destroy(true); 1601 } 1602 } else if (surfaceGenerationId != mSurface.getGenerationId() && 1603 mSurfaceHolder == null && mAttachInfo.mHardwareRenderer != null) { 1604 mFullRedrawNeeded = true; 1605 try { 1606 mAttachInfo.mHardwareRenderer.updateSurface(mHolder.getSurface()); 1607 } catch (OutOfResourcesException e) { 1608 handleOutOfResourcesException(e); 1609 return; 1610 } 1611 } 1612 } catch (RemoteException e) { 1613 } 1614 1615 if (DEBUG_ORIENTATION) Log.v( 1616 TAG, "Relayout returned: frame=" + frame + ", surface=" + mSurface); 1617 1618 attachInfo.mWindowLeft = frame.left; 1619 attachInfo.mWindowTop = frame.top; 1620 1621 // !!FIXME!! This next section handles the case where we did not get the 1622 // window size we asked for. We should avoid this by getting a maximum size from 1623 // the window session beforehand. 1624 if (mWidth != frame.width() || mHeight != frame.height()) { 1625 mWidth = frame.width(); 1626 mHeight = frame.height(); 1627 } 1628 1629 if (mSurfaceHolder != null) { 1630 // The app owns the surface; tell it about what is going on. 1631 if (mSurface.isValid()) { 1632 // XXX .copyFrom() doesn't work! 1633 //mSurfaceHolder.mSurface.copyFrom(mSurface); 1634 mSurfaceHolder.mSurface = mSurface; 1635 } 1636 mSurfaceHolder.setSurfaceFrameSize(mWidth, mHeight); 1637 mSurfaceHolder.mSurfaceLock.unlock(); 1638 if (mSurface.isValid()) { 1639 if (!hadSurface) { 1640 mSurfaceHolder.ungetCallbacks(); 1641 1642 mIsCreating = true; 1643 mSurfaceHolderCallback.surfaceCreated(mSurfaceHolder); 1644 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1645 if (callbacks != null) { 1646 for (SurfaceHolder.Callback c : callbacks) { 1647 c.surfaceCreated(mSurfaceHolder); 1648 } 1649 } 1650 surfaceChanged = true; 1651 } 1652 if (surfaceChanged) { 1653 mSurfaceHolderCallback.surfaceChanged(mSurfaceHolder, 1654 lp.format, mWidth, mHeight); 1655 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1656 if (callbacks != null) { 1657 for (SurfaceHolder.Callback c : callbacks) { 1658 c.surfaceChanged(mSurfaceHolder, lp.format, 1659 mWidth, mHeight); 1660 } 1661 } 1662 } 1663 mIsCreating = false; 1664 } else if (hadSurface) { 1665 mSurfaceHolder.ungetCallbacks(); 1666 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1667 mSurfaceHolderCallback.surfaceDestroyed(mSurfaceHolder); 1668 if (callbacks != null) { 1669 for (SurfaceHolder.Callback c : callbacks) { 1670 c.surfaceDestroyed(mSurfaceHolder); 1671 } 1672 } 1673 mSurfaceHolder.mSurfaceLock.lock(); 1674 try { 1675 mSurfaceHolder.mSurface = new Surface(); 1676 } finally { 1677 mSurfaceHolder.mSurfaceLock.unlock(); 1678 } 1679 } 1680 } 1681 1682 if (mAttachInfo.mHardwareRenderer != null && 1683 mAttachInfo.mHardwareRenderer.isEnabled()) { 1684 if (hwInitialized || 1685 mWidth != mAttachInfo.mHardwareRenderer.getWidth() || 1686 mHeight != mAttachInfo.mHardwareRenderer.getHeight()) { 1687 mAttachInfo.mHardwareRenderer.setup(mWidth, mHeight); 1688 if (!hwInitialized) { 1689 mAttachInfo.mHardwareRenderer.invalidate(mHolder.getSurface()); 1690 mFullRedrawNeeded = true; 1691 } 1692 } 1693 } 1694 1695 if (!mStopped) { 1696 boolean focusChangedDueToTouchMode = ensureTouchModeLocally( 1697 (relayoutResult&WindowManagerGlobal.RELAYOUT_RES_IN_TOUCH_MODE) != 0); 1698 if (focusChangedDueToTouchMode || mWidth != host.getMeasuredWidth() 1699 || mHeight != host.getMeasuredHeight() || contentInsetsChanged) { 1700 int childWidthMeasureSpec = getRootMeasureSpec(mWidth, lp.width); 1701 int childHeightMeasureSpec = getRootMeasureSpec(mHeight, lp.height); 1702 1703 if (DEBUG_LAYOUT) Log.v(TAG, "Ooops, something changed! mWidth=" 1704 + mWidth + " measuredWidth=" + host.getMeasuredWidth() 1705 + " mHeight=" + mHeight 1706 + " measuredHeight=" + host.getMeasuredHeight() 1707 + " coveredInsetsChanged=" + contentInsetsChanged); 1708 1709 // Ask host how big it wants to be 1710 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1711 1712 // Implementation of weights from WindowManager.LayoutParams 1713 // We just grow the dimensions as needed and re-measure if 1714 // needs be 1715 int width = host.getMeasuredWidth(); 1716 int height = host.getMeasuredHeight(); 1717 boolean measureAgain = false; 1718 1719 if (lp.horizontalWeight > 0.0f) { 1720 width += (int) ((mWidth - width) * lp.horizontalWeight); 1721 childWidthMeasureSpec = MeasureSpec.makeMeasureSpec(width, 1722 MeasureSpec.EXACTLY); 1723 measureAgain = true; 1724 } 1725 if (lp.verticalWeight > 0.0f) { 1726 height += (int) ((mHeight - height) * lp.verticalWeight); 1727 childHeightMeasureSpec = MeasureSpec.makeMeasureSpec(height, 1728 MeasureSpec.EXACTLY); 1729 measureAgain = true; 1730 } 1731 1732 if (measureAgain) { 1733 if (DEBUG_LAYOUT) Log.v(TAG, 1734 "And hey let's measure once more: width=" + width 1735 + " height=" + height); 1736 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1737 } 1738 1739 layoutRequested = true; 1740 } 1741 } 1742 } else { 1743 // Not the first pass and no window/insets/visibility change but the window 1744 // may have moved and we need check that and if so to update the left and right 1745 // in the attach info. We translate only the window frame since on window move 1746 // the window manager tells us only for the new frame but the insets are the 1747 // same and we do not want to translate them more than once. 1748 1749 // TODO: Well, we are checking whether the frame has changed similarly 1750 // to how this is done for the insets. This is however incorrect since 1751 // the insets and the frame are translated. For example, the old frame 1752 // was (1, 1 - 1, 1) and was translated to say (2, 2 - 2, 2), now the new 1753 // reported frame is (2, 2 - 2, 2) which implies no change but this is not 1754 // true since we are comparing a not translated value to a translated one. 1755 // This scenario is rare but we may want to fix that. 1756 1757 final boolean windowMoved = (attachInfo.mWindowLeft != frame.left 1758 || attachInfo.mWindowTop != frame.top); 1759 if (windowMoved) { 1760 if (mTranslator != null) { 1761 mTranslator.translateRectInScreenToAppWinFrame(frame); 1762 } 1763 attachInfo.mWindowLeft = frame.left; 1764 attachInfo.mWindowTop = frame.top; 1765 } 1766 } 1767 1768 final boolean didLayout = layoutRequested && !mStopped; 1769 boolean triggerGlobalLayoutListener = didLayout 1770 || attachInfo.mRecomputeGlobalAttributes; 1771 if (didLayout) { 1772 performLayout(lp, desiredWindowWidth, desiredWindowHeight); 1773 1774 // By this point all views have been sized and positioned 1775 // We can compute the transparent area 1776 1777 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 1778 // start out transparent 1779 // TODO: AVOID THAT CALL BY CACHING THE RESULT? 1780 host.getLocationInWindow(mTmpLocation); 1781 mTransparentRegion.set(mTmpLocation[0], mTmpLocation[1], 1782 mTmpLocation[0] + host.mRight - host.mLeft, 1783 mTmpLocation[1] + host.mBottom - host.mTop); 1784 1785 host.gatherTransparentRegion(mTransparentRegion); 1786 if (mTranslator != null) { 1787 mTranslator.translateRegionInWindowToScreen(mTransparentRegion); 1788 } 1789 1790 if (!mTransparentRegion.equals(mPreviousTransparentRegion)) { 1791 mPreviousTransparentRegion.set(mTransparentRegion); 1792 mFullRedrawNeeded = true; 1793 // reconfigure window manager 1794 try { 1795 mWindowSession.setTransparentRegion(mWindow, mTransparentRegion); 1796 } catch (RemoteException e) { 1797 } 1798 } 1799 } 1800 1801 if (DBG) { 1802 System.out.println("======================================"); 1803 System.out.println("performTraversals -- after setFrame"); 1804 host.debug(); 1805 } 1806 } 1807 1808 if (triggerGlobalLayoutListener) { 1809 attachInfo.mRecomputeGlobalAttributes = false; 1810 attachInfo.mTreeObserver.dispatchOnGlobalLayout(); 1811 } 1812 1813 if (computesInternalInsets) { 1814 // Clear the original insets. 1815 final ViewTreeObserver.InternalInsetsInfo insets = attachInfo.mGivenInternalInsets; 1816 insets.reset(); 1817 1818 // Compute new insets in place. 1819 attachInfo.mTreeObserver.dispatchOnComputeInternalInsets(insets); 1820 attachInfo.mHasNonEmptyGivenInternalInsets = !insets.isEmpty(); 1821 1822 // Tell the window manager. 1823 if (insetsPending || !mLastGivenInsets.equals(insets)) { 1824 mLastGivenInsets.set(insets); 1825 1826 // Translate insets to screen coordinates if needed. 1827 final Rect contentInsets; 1828 final Rect visibleInsets; 1829 final Region touchableRegion; 1830 if (mTranslator != null) { 1831 contentInsets = mTranslator.getTranslatedContentInsets(insets.contentInsets); 1832 visibleInsets = mTranslator.getTranslatedVisibleInsets(insets.visibleInsets); 1833 touchableRegion = mTranslator.getTranslatedTouchableArea(insets.touchableRegion); 1834 } else { 1835 contentInsets = insets.contentInsets; 1836 visibleInsets = insets.visibleInsets; 1837 touchableRegion = insets.touchableRegion; 1838 } 1839 1840 try { 1841 mWindowSession.setInsets(mWindow, insets.mTouchableInsets, 1842 contentInsets, visibleInsets, touchableRegion); 1843 } catch (RemoteException e) { 1844 } 1845 } 1846 } 1847 1848 boolean skipDraw = false; 1849 1850 if (mFirst) { 1851 // handle first focus request 1852 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: mView.hasFocus()=" 1853 + mView.hasFocus()); 1854 if (mView != null) { 1855 if (!mView.hasFocus()) { 1856 mView.requestFocus(View.FOCUS_FORWARD); 1857 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: requested focused view=" 1858 + mView.findFocus()); 1859 } else { 1860 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: existing focused view=" 1861 + mView.findFocus()); 1862 } 1863 } 1864 if ((relayoutResult & WindowManagerGlobal.RELAYOUT_RES_ANIMATING) != 0) { 1865 // The first time we relayout the window, if the system is 1866 // doing window animations, we want to hold of on any future 1867 // draws until the animation is done. 1868 mWindowsAnimating = true; 1869 } 1870 } else if (mWindowsAnimating) { 1871 skipDraw = true; 1872 } 1873 1874 mFirst = false; 1875 mWillDrawSoon = false; 1876 mNewSurfaceNeeded = false; 1877 mViewVisibility = viewVisibility; 1878 1879 if (mAttachInfo.mHasWindowFocus && !isInLocalFocusMode()) { 1880 final boolean imTarget = WindowManager.LayoutParams 1881 .mayUseInputMethod(mWindowAttributes.flags); 1882 if (imTarget != mLastWasImTarget) { 1883 mLastWasImTarget = imTarget; 1884 InputMethodManager imm = InputMethodManager.peekInstance(); 1885 if (imm != null && imTarget) { 1886 imm.startGettingWindowFocus(mView); 1887 imm.onWindowFocus(mView, mView.findFocus(), 1888 mWindowAttributes.softInputMode, 1889 !mHasHadWindowFocus, mWindowAttributes.flags); 1890 } 1891 } 1892 } 1893 1894 // Remember if we must report the next draw. 1895 if ((relayoutResult & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 1896 mReportNextDraw = true; 1897 } 1898 1899 boolean cancelDraw = attachInfo.mTreeObserver.dispatchOnPreDraw() || 1900 viewVisibility != View.VISIBLE; 1901 1902 if (!cancelDraw && !newSurface) { 1903 if (!skipDraw || mReportNextDraw) { 1904 if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 1905 for (int i = 0; i < mPendingTransitions.size(); ++i) { 1906 mPendingTransitions.get(i).startChangingAnimations(); 1907 } 1908 mPendingTransitions.clear(); 1909 } 1910 1911 performDraw(); 1912 } 1913 } else { 1914 if (viewVisibility == View.VISIBLE) { 1915 // Try again 1916 scheduleTraversals(); 1917 } else if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 1918 for (int i = 0; i < mPendingTransitions.size(); ++i) { 1919 mPendingTransitions.get(i).endChangingAnimations(); 1920 } 1921 mPendingTransitions.clear(); 1922 } 1923 } 1924 1925 mIsInTraversal = false; 1926 } 1927 1928 private void handleOutOfResourcesException(Surface.OutOfResourcesException e) { 1929 Log.e(TAG, "OutOfResourcesException initializing HW surface", e); 1930 try { 1931 if (!mWindowSession.outOfMemory(mWindow) && 1932 Process.myUid() != Process.SYSTEM_UID) { 1933 Slog.w(TAG, "No processes killed for memory; killing self"); 1934 Process.killProcess(Process.myPid()); 1935 } 1936 } catch (RemoteException ex) { 1937 } 1938 mLayoutRequested = true; // ask wm for a new surface next time. 1939 } 1940 1941 private void performMeasure(int childWidthMeasureSpec, int childHeightMeasureSpec) { 1942 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "measure"); 1943 try { 1944 mView.measure(childWidthMeasureSpec, childHeightMeasureSpec); 1945 } finally { 1946 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 1947 } 1948 } 1949 1950 /** 1951 * Called by {@link android.view.View#isInLayout()} to determine whether the view hierarchy 1952 * is currently undergoing a layout pass. 1953 * 1954 * @return whether the view hierarchy is currently undergoing a layout pass 1955 */ 1956 boolean isInLayout() { 1957 return mInLayout; 1958 } 1959 1960 /** 1961 * Called by {@link android.view.View#requestLayout()} if the view hierarchy is currently 1962 * undergoing a layout pass. requestLayout() should not generally be called during layout, 1963 * unless the container hierarchy knows what it is doing (i.e., it is fine as long as 1964 * all children in that container hierarchy are measured and laid out at the end of the layout 1965 * pass for that container). If requestLayout() is called anyway, we handle it correctly 1966 * by registering all requesters during a frame as it proceeds. At the end of the frame, 1967 * we check all of those views to see if any still have pending layout requests, which 1968 * indicates that they were not correctly handled by their container hierarchy. If that is 1969 * the case, we clear all such flags in the tree, to remove the buggy flag state that leads 1970 * to blank containers, and force a second request/measure/layout pass in this frame. If 1971 * more requestLayout() calls are received during that second layout pass, we post those 1972 * requests to the next frame to avoid possible infinite loops. 1973 * 1974 * <p>The return value from this method indicates whether the request should proceed 1975 * (if it is a request during the first layout pass) or should be skipped and posted to the 1976 * next frame (if it is a request during the second layout pass).</p> 1977 * 1978 * @param view the view that requested the layout. 1979 * 1980 * @return true if request should proceed, false otherwise. 1981 */ 1982 boolean requestLayoutDuringLayout(final View view) { 1983 if (view.mParent == null || view.mAttachInfo == null) { 1984 // Would not normally trigger another layout, so just let it pass through as usual 1985 return true; 1986 } 1987 if (!mLayoutRequesters.contains(view)) { 1988 mLayoutRequesters.add(view); 1989 } 1990 if (!mHandlingLayoutInLayoutRequest) { 1991 // Let the request proceed normally; it will be processed in a second layout pass 1992 // if necessary 1993 return true; 1994 } else { 1995 // Don't let the request proceed during the second layout pass. 1996 // It will post to the next frame instead. 1997 return false; 1998 } 1999 } 2000 2001 private void performLayout(WindowManager.LayoutParams lp, int desiredWindowWidth, 2002 int desiredWindowHeight) { 2003 mLayoutRequested = false; 2004 mScrollMayChange = true; 2005 mInLayout = true; 2006 2007 final View host = mView; 2008 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) { 2009 Log.v(TAG, "Laying out " + host + " to (" + 2010 host.getMeasuredWidth() + ", " + host.getMeasuredHeight() + ")"); 2011 } 2012 2013 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "layout"); 2014 try { 2015 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 2016 2017 mInLayout = false; 2018 int numViewsRequestingLayout = mLayoutRequesters.size(); 2019 if (numViewsRequestingLayout > 0) { 2020 // requestLayout() was called during layout. 2021 // If no layout-request flags are set on the requesting views, there is no problem. 2022 // If some requests are still pending, then we need to clear those flags and do 2023 // a full request/measure/layout pass to handle this situation. 2024 ArrayList<View> validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, 2025 false); 2026 if (validLayoutRequesters != null) { 2027 // Set this flag to indicate that any further requests are happening during 2028 // the second pass, which may result in posting those requests to the next 2029 // frame instead 2030 mHandlingLayoutInLayoutRequest = true; 2031 2032 // Process fresh layout requests, then measure and layout 2033 int numValidRequests = validLayoutRequesters.size(); 2034 for (int i = 0; i < numValidRequests; ++i) { 2035 final View view = validLayoutRequesters.get(i); 2036 Log.w("View", "requestLayout() improperly called by " + view + 2037 " during layout: running second layout pass"); 2038 view.requestLayout(); 2039 } 2040 measureHierarchy(host, lp, mView.getContext().getResources(), 2041 desiredWindowWidth, desiredWindowHeight); 2042 mInLayout = true; 2043 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 2044 2045 mHandlingLayoutInLayoutRequest = false; 2046 2047 // Check the valid requests again, this time without checking/clearing the 2048 // layout flags, since requests happening during the second pass get noop'd 2049 validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, true); 2050 if (validLayoutRequesters != null) { 2051 final ArrayList<View> finalRequesters = validLayoutRequesters; 2052 // Post second-pass requests to the next frame 2053 getRunQueue().post(new Runnable() { 2054 @Override 2055 public void run() { 2056 int numValidRequests = finalRequesters.size(); 2057 for (int i = 0; i < numValidRequests; ++i) { 2058 final View view = finalRequesters.get(i); 2059 Log.w("View", "requestLayout() improperly called by " + view + 2060 " during second layout pass: posting in next frame"); 2061 view.requestLayout(); 2062 } 2063 } 2064 }); 2065 } 2066 } 2067 2068 } 2069 } finally { 2070 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2071 } 2072 mInLayout = false; 2073 } 2074 2075 /** 2076 * This method is called during layout when there have been calls to requestLayout() during 2077 * layout. It walks through the list of views that requested layout to determine which ones 2078 * still need it, based on visibility in the hierarchy and whether they have already been 2079 * handled (as is usually the case with ListView children). 2080 * 2081 * @param layoutRequesters The list of views that requested layout during layout 2082 * @param secondLayoutRequests Whether the requests were issued during the second layout pass. 2083 * If so, the FORCE_LAYOUT flag was not set on requesters. 2084 * @return A list of the actual views that still need to be laid out. 2085 */ 2086 private ArrayList<View> getValidLayoutRequesters(ArrayList<View> layoutRequesters, 2087 boolean secondLayoutRequests) { 2088 2089 int numViewsRequestingLayout = layoutRequesters.size(); 2090 ArrayList<View> validLayoutRequesters = null; 2091 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2092 View view = layoutRequesters.get(i); 2093 if (view != null && view.mAttachInfo != null && view.mParent != null && 2094 (secondLayoutRequests || (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) == 2095 View.PFLAG_FORCE_LAYOUT)) { 2096 boolean gone = false; 2097 View parent = view; 2098 // Only trigger new requests for views in a non-GONE hierarchy 2099 while (parent != null) { 2100 if ((parent.mViewFlags & View.VISIBILITY_MASK) == View.GONE) { 2101 gone = true; 2102 break; 2103 } 2104 if (parent.mParent instanceof View) { 2105 parent = (View) parent.mParent; 2106 } else { 2107 parent = null; 2108 } 2109 } 2110 if (!gone) { 2111 if (validLayoutRequesters == null) { 2112 validLayoutRequesters = new ArrayList<View>(); 2113 } 2114 validLayoutRequesters.add(view); 2115 } 2116 } 2117 } 2118 if (!secondLayoutRequests) { 2119 // If we're checking the layout flags, then we need to clean them up also 2120 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2121 View view = layoutRequesters.get(i); 2122 while (view != null && 2123 (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) != 0) { 2124 view.mPrivateFlags &= ~View.PFLAG_FORCE_LAYOUT; 2125 if (view.mParent instanceof View) { 2126 view = (View) view.mParent; 2127 } else { 2128 view = null; 2129 } 2130 } 2131 } 2132 } 2133 layoutRequesters.clear(); 2134 return validLayoutRequesters; 2135 } 2136 2137 @Override 2138 public void requestTransparentRegion(View child) { 2139 // the test below should not fail unless someone is messing with us 2140 checkThread(); 2141 if (mView == child) { 2142 mView.mPrivateFlags |= View.PFLAG_REQUEST_TRANSPARENT_REGIONS; 2143 // Need to make sure we re-evaluate the window attributes next 2144 // time around, to ensure the window has the correct format. 2145 mWindowAttributesChanged = true; 2146 mWindowAttributesChangesFlag = 0; 2147 requestLayout(); 2148 } 2149 } 2150 2151 /** 2152 * Figures out the measure spec for the root view in a window based on it's 2153 * layout params. 2154 * 2155 * @param windowSize 2156 * The available width or height of the window 2157 * 2158 * @param rootDimension 2159 * The layout params for one dimension (width or height) of the 2160 * window. 2161 * 2162 * @return The measure spec to use to measure the root view. 2163 */ 2164 private static int getRootMeasureSpec(int windowSize, int rootDimension) { 2165 int measureSpec; 2166 switch (rootDimension) { 2167 2168 case ViewGroup.LayoutParams.MATCH_PARENT: 2169 // Window can't resize. Force root view to be windowSize. 2170 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.EXACTLY); 2171 break; 2172 case ViewGroup.LayoutParams.WRAP_CONTENT: 2173 // Window can resize. Set max size for root view. 2174 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.AT_MOST); 2175 break; 2176 default: 2177 // Window wants to be an exact size. Force root view to be that size. 2178 measureSpec = MeasureSpec.makeMeasureSpec(rootDimension, MeasureSpec.EXACTLY); 2179 break; 2180 } 2181 return measureSpec; 2182 } 2183 2184 int mHardwareYOffset; 2185 int mResizeAlpha; 2186 final Paint mResizePaint = new Paint(); 2187 2188 @Override 2189 public void onHardwarePreDraw(HardwareCanvas canvas) { 2190 canvas.translate(0, -mHardwareYOffset); 2191 } 2192 2193 @Override 2194 public void onHardwarePostDraw(HardwareCanvas canvas) { 2195 if (mResizeBuffer != null) { 2196 mResizePaint.setAlpha(mResizeAlpha); 2197 canvas.drawHardwareLayer(mResizeBuffer, 0.0f, mHardwareYOffset, mResizePaint); 2198 } 2199 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2200 } 2201 2202 /** 2203 * @hide 2204 */ 2205 void outputDisplayList(View view) { 2206 if (mAttachInfo != null && mAttachInfo.mHardwareCanvas != null) { 2207 DisplayList displayList = view.getDisplayList(); 2208 if (displayList != null) { 2209 mAttachInfo.mHardwareCanvas.outputDisplayList(displayList); 2210 } 2211 } 2212 } 2213 2214 /** 2215 * @see #PROPERTY_PROFILE_RENDERING 2216 */ 2217 private void profileRendering(boolean enabled) { 2218 if (mProfileRendering) { 2219 mRenderProfilingEnabled = enabled; 2220 2221 if (mRenderProfiler != null) { 2222 mChoreographer.removeFrameCallback(mRenderProfiler); 2223 } 2224 if (mRenderProfilingEnabled) { 2225 if (mRenderProfiler == null) { 2226 mRenderProfiler = new Choreographer.FrameCallback() { 2227 @Override 2228 public void doFrame(long frameTimeNanos) { 2229 mDirty.set(0, 0, mWidth, mHeight); 2230 scheduleTraversals(); 2231 if (mRenderProfilingEnabled) { 2232 mChoreographer.postFrameCallback(mRenderProfiler); 2233 } 2234 } 2235 }; 2236 } 2237 mChoreographer.postFrameCallback(mRenderProfiler); 2238 } else { 2239 mRenderProfiler = null; 2240 } 2241 } 2242 } 2243 2244 /** 2245 * Called from draw() when DEBUG_FPS is enabled 2246 */ 2247 private void trackFPS() { 2248 // Tracks frames per second drawn. First value in a series of draws may be bogus 2249 // because it down not account for the intervening idle time 2250 long nowTime = System.currentTimeMillis(); 2251 if (mFpsStartTime < 0) { 2252 mFpsStartTime = mFpsPrevTime = nowTime; 2253 mFpsNumFrames = 0; 2254 } else { 2255 ++mFpsNumFrames; 2256 String thisHash = Integer.toHexString(System.identityHashCode(this)); 2257 long frameTime = nowTime - mFpsPrevTime; 2258 long totalTime = nowTime - mFpsStartTime; 2259 Log.v(TAG, "0x" + thisHash + "\tFrame time:\t" + frameTime); 2260 mFpsPrevTime = nowTime; 2261 if (totalTime > 1000) { 2262 float fps = (float) mFpsNumFrames * 1000 / totalTime; 2263 Log.v(TAG, "0x" + thisHash + "\tFPS:\t" + fps); 2264 mFpsStartTime = nowTime; 2265 mFpsNumFrames = 0; 2266 } 2267 } 2268 } 2269 2270 private void performDraw() { 2271 if (mAttachInfo.mDisplayState == Display.STATE_OFF && !mReportNextDraw) { 2272 return; 2273 } 2274 2275 final boolean fullRedrawNeeded = mFullRedrawNeeded; 2276 mFullRedrawNeeded = false; 2277 2278 mIsDrawing = true; 2279 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "draw"); 2280 try { 2281 draw(fullRedrawNeeded); 2282 } finally { 2283 mIsDrawing = false; 2284 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2285 } 2286 2287 if (mReportNextDraw) { 2288 mReportNextDraw = false; 2289 2290 if (LOCAL_LOGV) { 2291 Log.v(TAG, "FINISHED DRAWING: " + mWindowAttributes.getTitle()); 2292 } 2293 if (mSurfaceHolder != null && mSurface.isValid()) { 2294 mSurfaceHolderCallback.surfaceRedrawNeeded(mSurfaceHolder); 2295 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 2296 if (callbacks != null) { 2297 for (SurfaceHolder.Callback c : callbacks) { 2298 if (c instanceof SurfaceHolder.Callback2) { 2299 ((SurfaceHolder.Callback2)c).surfaceRedrawNeeded( 2300 mSurfaceHolder); 2301 } 2302 } 2303 } 2304 } 2305 try { 2306 mWindowSession.finishDrawing(mWindow); 2307 } catch (RemoteException e) { 2308 } 2309 } 2310 } 2311 2312 private void draw(boolean fullRedrawNeeded) { 2313 Surface surface = mSurface; 2314 if (!surface.isValid()) { 2315 return; 2316 } 2317 2318 if (DEBUG_FPS) { 2319 trackFPS(); 2320 } 2321 2322 if (!sFirstDrawComplete) { 2323 synchronized (sFirstDrawHandlers) { 2324 sFirstDrawComplete = true; 2325 final int count = sFirstDrawHandlers.size(); 2326 for (int i = 0; i< count; i++) { 2327 mHandler.post(sFirstDrawHandlers.get(i)); 2328 } 2329 } 2330 } 2331 2332 scrollToRectOrFocus(null, false); 2333 2334 final AttachInfo attachInfo = mAttachInfo; 2335 if (attachInfo.mViewScrollChanged) { 2336 attachInfo.mViewScrollChanged = false; 2337 attachInfo.mTreeObserver.dispatchOnScrollChanged(); 2338 } 2339 2340 int yoff; 2341 boolean animating = mScroller != null && mScroller.computeScrollOffset(); 2342 if (animating) { 2343 yoff = mScroller.getCurrY(); 2344 } else { 2345 yoff = mScrollY; 2346 } 2347 if (mCurScrollY != yoff) { 2348 mCurScrollY = yoff; 2349 fullRedrawNeeded = true; 2350 } 2351 2352 final float appScale = attachInfo.mApplicationScale; 2353 final boolean scalingRequired = attachInfo.mScalingRequired; 2354 2355 int resizeAlpha = 0; 2356 if (mResizeBuffer != null) { 2357 long deltaTime = SystemClock.uptimeMillis() - mResizeBufferStartTime; 2358 if (deltaTime < mResizeBufferDuration) { 2359 float amt = deltaTime/(float) mResizeBufferDuration; 2360 amt = mResizeInterpolator.getInterpolation(amt); 2361 animating = true; 2362 resizeAlpha = 255 - (int)(amt*255); 2363 } else { 2364 disposeResizeBuffer(); 2365 } 2366 } 2367 2368 final Rect dirty = mDirty; 2369 if (mSurfaceHolder != null) { 2370 // The app owns the surface, we won't draw. 2371 dirty.setEmpty(); 2372 if (animating) { 2373 if (mScroller != null) { 2374 mScroller.abortAnimation(); 2375 } 2376 disposeResizeBuffer(); 2377 } 2378 return; 2379 } 2380 2381 if (fullRedrawNeeded) { 2382 attachInfo.mIgnoreDirtyState = true; 2383 dirty.set(0, 0, (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 2384 } 2385 2386 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2387 Log.v(TAG, "Draw " + mView + "/" 2388 + mWindowAttributes.getTitle() 2389 + ": dirty={" + dirty.left + "," + dirty.top 2390 + "," + dirty.right + "," + dirty.bottom + "} surface=" 2391 + surface + " surface.isValid()=" + surface.isValid() + ", appScale:" + 2392 appScale + ", width=" + mWidth + ", height=" + mHeight); 2393 } 2394 2395 invalidateDisplayLists(); 2396 2397 attachInfo.mTreeObserver.dispatchOnDraw(); 2398 2399 if (!dirty.isEmpty() || mIsAnimating) { 2400 if (attachInfo.mHardwareRenderer != null && attachInfo.mHardwareRenderer.isEnabled()) { 2401 // Draw with hardware renderer. 2402 mIsAnimating = false; 2403 mHardwareYOffset = yoff; 2404 mResizeAlpha = resizeAlpha; 2405 2406 mCurrentDirty.set(dirty); 2407 dirty.setEmpty(); 2408 2409 attachInfo.mHardwareRenderer.draw(mView, attachInfo, this, 2410 animating ? null : mCurrentDirty); 2411 } else { 2412 // If we get here with a disabled & requested hardware renderer, something went 2413 // wrong (an invalidate posted right before we destroyed the hardware surface 2414 // for instance) so we should just bail out. Locking the surface with software 2415 // rendering at this point would lock it forever and prevent hardware renderer 2416 // from doing its job when it comes back. 2417 // Before we request a new frame we must however attempt to reinitiliaze the 2418 // hardware renderer if it's in requested state. This would happen after an 2419 // eglTerminate() for instance. 2420 if (attachInfo.mHardwareRenderer != null && 2421 !attachInfo.mHardwareRenderer.isEnabled() && 2422 attachInfo.mHardwareRenderer.isRequested()) { 2423 2424 try { 2425 attachInfo.mHardwareRenderer.initializeIfNeeded(mWidth, mHeight, 2426 mHolder.getSurface()); 2427 } catch (OutOfResourcesException e) { 2428 handleOutOfResourcesException(e); 2429 return; 2430 } 2431 2432 mFullRedrawNeeded = true; 2433 scheduleTraversals(); 2434 return; 2435 } 2436 2437 if (!drawSoftware(surface, attachInfo, yoff, scalingRequired, dirty)) { 2438 return; 2439 } 2440 } 2441 } 2442 2443 if (animating) { 2444 mFullRedrawNeeded = true; 2445 scheduleTraversals(); 2446 } 2447 } 2448 2449 /** 2450 * @return true if drawing was succesfull, false if an error occurred 2451 */ 2452 private boolean drawSoftware(Surface surface, AttachInfo attachInfo, int yoff, 2453 boolean scalingRequired, Rect dirty) { 2454 2455 // Draw with software renderer. 2456 Canvas canvas; 2457 try { 2458 int left = dirty.left; 2459 int top = dirty.top; 2460 int right = dirty.right; 2461 int bottom = dirty.bottom; 2462 2463 canvas = mSurface.lockCanvas(dirty); 2464 2465 // The dirty rectangle can be modified by Surface.lockCanvas() 2466 //noinspection ConstantConditions 2467 if (left != dirty.left || top != dirty.top || right != dirty.right || 2468 bottom != dirty.bottom) { 2469 attachInfo.mIgnoreDirtyState = true; 2470 } 2471 2472 // TODO: Do this in native 2473 canvas.setDensity(mDensity); 2474 } catch (Surface.OutOfResourcesException e) { 2475 handleOutOfResourcesException(e); 2476 return false; 2477 } catch (IllegalArgumentException e) { 2478 Log.e(TAG, "Could not lock surface", e); 2479 // Don't assume this is due to out of memory, it could be 2480 // something else, and if it is something else then we could 2481 // kill stuff (or ourself) for no reason. 2482 mLayoutRequested = true; // ask wm for a new surface next time. 2483 return false; 2484 } 2485 2486 try { 2487 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2488 Log.v(TAG, "Surface " + surface + " drawing to bitmap w=" 2489 + canvas.getWidth() + ", h=" + canvas.getHeight()); 2490 //canvas.drawARGB(255, 255, 0, 0); 2491 } 2492 2493 // If this bitmap's format includes an alpha channel, we 2494 // need to clear it before drawing so that the child will 2495 // properly re-composite its drawing on a transparent 2496 // background. This automatically respects the clip/dirty region 2497 // or 2498 // If we are applying an offset, we need to clear the area 2499 // where the offset doesn't appear to avoid having garbage 2500 // left in the blank areas. 2501 if (!canvas.isOpaque() || yoff != 0) { 2502 canvas.drawColor(0, PorterDuff.Mode.CLEAR); 2503 } 2504 2505 dirty.setEmpty(); 2506 mIsAnimating = false; 2507 attachInfo.mDrawingTime = SystemClock.uptimeMillis(); 2508 mView.mPrivateFlags |= View.PFLAG_DRAWN; 2509 2510 if (DEBUG_DRAW) { 2511 Context cxt = mView.getContext(); 2512 Log.i(TAG, "Drawing: package:" + cxt.getPackageName() + 2513 ", metrics=" + cxt.getResources().getDisplayMetrics() + 2514 ", compatibilityInfo=" + cxt.getResources().getCompatibilityInfo()); 2515 } 2516 try { 2517 canvas.translate(0, -yoff); 2518 if (mTranslator != null) { 2519 mTranslator.translateCanvas(canvas); 2520 } 2521 canvas.setScreenDensity(scalingRequired ? mNoncompatDensity : 0); 2522 attachInfo.mSetIgnoreDirtyState = false; 2523 2524 mView.draw(canvas); 2525 2526 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2527 } finally { 2528 if (!attachInfo.mSetIgnoreDirtyState) { 2529 // Only clear the flag if it was not set during the mView.draw() call 2530 attachInfo.mIgnoreDirtyState = false; 2531 } 2532 } 2533 } finally { 2534 try { 2535 surface.unlockCanvasAndPost(canvas); 2536 } catch (IllegalArgumentException e) { 2537 Log.e(TAG, "Could not unlock surface", e); 2538 mLayoutRequested = true; // ask wm for a new surface next time. 2539 //noinspection ReturnInsideFinallyBlock 2540 return false; 2541 } 2542 2543 if (LOCAL_LOGV) { 2544 Log.v(TAG, "Surface " + surface + " unlockCanvasAndPost"); 2545 } 2546 } 2547 return true; 2548 } 2549 2550 /** 2551 * We want to draw a highlight around the current accessibility focused. 2552 * Since adding a style for all possible view is not a viable option we 2553 * have this specialized drawing method. 2554 * 2555 * Note: We are doing this here to be able to draw the highlight for 2556 * virtual views in addition to real ones. 2557 * 2558 * @param canvas The canvas on which to draw. 2559 */ 2560 private void drawAccessibilityFocusedDrawableIfNeeded(Canvas canvas) { 2561 AccessibilityManager manager = AccessibilityManager.getInstance(mView.mContext); 2562 if (!manager.isEnabled() || !manager.isTouchExplorationEnabled()) { 2563 return; 2564 } 2565 if (mAccessibilityFocusedHost == null || mAccessibilityFocusedHost.mAttachInfo == null) { 2566 return; 2567 } 2568 Drawable drawable = getAccessibilityFocusedDrawable(); 2569 if (drawable == null) { 2570 return; 2571 } 2572 AccessibilityNodeProvider provider = 2573 mAccessibilityFocusedHost.getAccessibilityNodeProvider(); 2574 Rect bounds = mView.mAttachInfo.mTmpInvalRect; 2575 if (provider == null) { 2576 mAccessibilityFocusedHost.getBoundsOnScreen(bounds); 2577 } else { 2578 if (mAccessibilityFocusedVirtualView == null) { 2579 return; 2580 } 2581 mAccessibilityFocusedVirtualView.getBoundsInScreen(bounds); 2582 } 2583 bounds.offset(-mAttachInfo.mWindowLeft, -mAttachInfo.mWindowTop); 2584 bounds.intersect(0, 0, mAttachInfo.mViewRootImpl.mWidth, mAttachInfo.mViewRootImpl.mHeight); 2585 drawable.setBounds(bounds); 2586 drawable.draw(canvas); 2587 } 2588 2589 private Drawable getAccessibilityFocusedDrawable() { 2590 if (mAttachInfo != null) { 2591 // Lazily load the accessibility focus drawable. 2592 if (mAttachInfo.mAccessibilityFocusDrawable == null) { 2593 TypedValue value = new TypedValue(); 2594 final boolean resolved = mView.mContext.getTheme().resolveAttribute( 2595 R.attr.accessibilityFocusedDrawable, value, true); 2596 if (resolved) { 2597 mAttachInfo.mAccessibilityFocusDrawable = 2598 mView.mContext.getResources().getDrawable(value.resourceId); 2599 } 2600 } 2601 return mAttachInfo.mAccessibilityFocusDrawable; 2602 } 2603 return null; 2604 } 2605 2606 void invalidateDisplayLists() { 2607 final ArrayList<DisplayList> displayLists = mDisplayLists; 2608 final int count = displayLists.size(); 2609 2610 for (int i = 0; i < count; i++) { 2611 final DisplayList displayList = displayLists.get(i); 2612 if (displayList.isDirty()) { 2613 displayList.reset(); 2614 } 2615 } 2616 2617 displayLists.clear(); 2618 } 2619 2620 /** 2621 * @hide 2622 */ 2623 public void setDrawDuringWindowsAnimating(boolean value) { 2624 mDrawDuringWindowsAnimating = value; 2625 if (value) { 2626 handleDispatchDoneAnimating(); 2627 } 2628 } 2629 2630 boolean scrollToRectOrFocus(Rect rectangle, boolean immediate) { 2631 final View.AttachInfo attachInfo = mAttachInfo; 2632 final Rect ci = attachInfo.mContentInsets; 2633 final Rect vi = attachInfo.mVisibleInsets; 2634 int scrollY = 0; 2635 boolean handled = false; 2636 2637 if (vi.left > ci.left || vi.top > ci.top 2638 || vi.right > ci.right || vi.bottom > ci.bottom) { 2639 // We'll assume that we aren't going to change the scroll 2640 // offset, since we want to avoid that unless it is actually 2641 // going to make the focus visible... otherwise we scroll 2642 // all over the place. 2643 scrollY = mScrollY; 2644 // We can be called for two different situations: during a draw, 2645 // to update the scroll position if the focus has changed (in which 2646 // case 'rectangle' is null), or in response to a 2647 // requestChildRectangleOnScreen() call (in which case 'rectangle' 2648 // is non-null and we just want to scroll to whatever that 2649 // rectangle is). 2650 final View focus = mView.findFocus(); 2651 if (focus == null) { 2652 return false; 2653 } 2654 View lastScrolledFocus = (mLastScrolledFocus != null) ? mLastScrolledFocus.get() : null; 2655 if (focus != lastScrolledFocus) { 2656 // If the focus has changed, then ignore any requests to scroll 2657 // to a rectangle; first we want to make sure the entire focus 2658 // view is visible. 2659 rectangle = null; 2660 } 2661 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Eval scroll: focus=" + focus 2662 + " rectangle=" + rectangle + " ci=" + ci 2663 + " vi=" + vi); 2664 if (focus == lastScrolledFocus && !mScrollMayChange && rectangle == null) { 2665 // Optimization: if the focus hasn't changed since last 2666 // time, and no layout has happened, then just leave things 2667 // as they are. 2668 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Keeping scroll y=" 2669 + mScrollY + " vi=" + vi.toShortString()); 2670 } else { 2671 // We need to determine if the currently focused view is 2672 // within the visible part of the window and, if not, apply 2673 // a pan so it can be seen. 2674 mLastScrolledFocus = new WeakReference<View>(focus); 2675 mScrollMayChange = false; 2676 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Need to scroll?"); 2677 // Try to find the rectangle from the focus view. 2678 if (focus.getGlobalVisibleRect(mVisRect, null)) { 2679 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Root w=" 2680 + mView.getWidth() + " h=" + mView.getHeight() 2681 + " ci=" + ci.toShortString() 2682 + " vi=" + vi.toShortString()); 2683 if (rectangle == null) { 2684 focus.getFocusedRect(mTempRect); 2685 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Focus " + focus 2686 + ": focusRect=" + mTempRect.toShortString()); 2687 if (mView instanceof ViewGroup) { 2688 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 2689 focus, mTempRect); 2690 } 2691 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2692 "Focus in window: focusRect=" 2693 + mTempRect.toShortString() 2694 + " visRect=" + mVisRect.toShortString()); 2695 } else { 2696 mTempRect.set(rectangle); 2697 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2698 "Request scroll to rect: " 2699 + mTempRect.toShortString() 2700 + " visRect=" + mVisRect.toShortString()); 2701 } 2702 if (mTempRect.intersect(mVisRect)) { 2703 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2704 "Focus window visible rect: " 2705 + mTempRect.toShortString()); 2706 if (mTempRect.height() > 2707 (mView.getHeight()-vi.top-vi.bottom)) { 2708 // If the focus simply is not going to fit, then 2709 // best is probably just to leave things as-is. 2710 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2711 "Too tall; leaving scrollY=" + scrollY); 2712 } else if ((mTempRect.top-scrollY) < vi.top) { 2713 scrollY -= vi.top - (mTempRect.top-scrollY); 2714 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2715 "Top covered; scrollY=" + scrollY); 2716 } else if ((mTempRect.bottom-scrollY) 2717 > (mView.getHeight()-vi.bottom)) { 2718 scrollY += (mTempRect.bottom-scrollY) 2719 - (mView.getHeight()-vi.bottom); 2720 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2721 "Bottom covered; scrollY=" + scrollY); 2722 } 2723 handled = true; 2724 } 2725 } 2726 } 2727 } 2728 2729 if (scrollY != mScrollY) { 2730 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Pan scroll changed: old=" 2731 + mScrollY + " , new=" + scrollY); 2732 if (!immediate && mResizeBuffer == null) { 2733 if (mScroller == null) { 2734 mScroller = new Scroller(mView.getContext()); 2735 } 2736 mScroller.startScroll(0, mScrollY, 0, scrollY-mScrollY); 2737 } else if (mScroller != null) { 2738 mScroller.abortAnimation(); 2739 } 2740 mScrollY = scrollY; 2741 } 2742 2743 return handled; 2744 } 2745 2746 /** 2747 * @hide 2748 */ 2749 public View getAccessibilityFocusedHost() { 2750 return mAccessibilityFocusedHost; 2751 } 2752 2753 /** 2754 * @hide 2755 */ 2756 public AccessibilityNodeInfo getAccessibilityFocusedVirtualView() { 2757 return mAccessibilityFocusedVirtualView; 2758 } 2759 2760 void setAccessibilityFocus(View view, AccessibilityNodeInfo node) { 2761 // If we have a virtual view with accessibility focus we need 2762 // to clear the focus and invalidate the virtual view bounds. 2763 if (mAccessibilityFocusedVirtualView != null) { 2764 2765 AccessibilityNodeInfo focusNode = mAccessibilityFocusedVirtualView; 2766 View focusHost = mAccessibilityFocusedHost; 2767 2768 // Wipe the state of the current accessibility focus since 2769 // the call into the provider to clear accessibility focus 2770 // will fire an accessibility event which will end up calling 2771 // this method and we want to have clean state when this 2772 // invocation happens. 2773 mAccessibilityFocusedHost = null; 2774 mAccessibilityFocusedVirtualView = null; 2775 2776 // Clear accessibility focus on the host after clearing state since 2777 // this method may be reentrant. 2778 focusHost.clearAccessibilityFocusNoCallbacks(); 2779 2780 AccessibilityNodeProvider provider = focusHost.getAccessibilityNodeProvider(); 2781 if (provider != null) { 2782 // Invalidate the area of the cleared accessibility focus. 2783 focusNode.getBoundsInParent(mTempRect); 2784 focusHost.invalidate(mTempRect); 2785 // Clear accessibility focus in the virtual node. 2786 final int virtualNodeId = AccessibilityNodeInfo.getVirtualDescendantId( 2787 focusNode.getSourceNodeId()); 2788 provider.performAction(virtualNodeId, 2789 AccessibilityNodeInfo.ACTION_CLEAR_ACCESSIBILITY_FOCUS, null); 2790 } 2791 focusNode.recycle(); 2792 } 2793 if (mAccessibilityFocusedHost != null) { 2794 // Clear accessibility focus in the view. 2795 mAccessibilityFocusedHost.clearAccessibilityFocusNoCallbacks(); 2796 } 2797 2798 // Set the new focus host and node. 2799 mAccessibilityFocusedHost = view; 2800 mAccessibilityFocusedVirtualView = node; 2801 } 2802 2803 @Override 2804 public void requestChildFocus(View child, View focused) { 2805 if (DEBUG_INPUT_RESIZE) { 2806 Log.v(TAG, "Request child focus: focus now " + focused); 2807 } 2808 checkThread(); 2809 scheduleTraversals(); 2810 } 2811 2812 @Override 2813 public void clearChildFocus(View child) { 2814 if (DEBUG_INPUT_RESIZE) { 2815 Log.v(TAG, "Clearing child focus"); 2816 } 2817 checkThread(); 2818 scheduleTraversals(); 2819 } 2820 2821 @Override 2822 public ViewParent getParentForAccessibility() { 2823 return null; 2824 } 2825 2826 @Override 2827 public void focusableViewAvailable(View v) { 2828 checkThread(); 2829 if (mView != null) { 2830 if (!mView.hasFocus()) { 2831 v.requestFocus(); 2832 } else { 2833 // the one case where will transfer focus away from the current one 2834 // is if the current view is a view group that prefers to give focus 2835 // to its children first AND the view is a descendant of it. 2836 View focused = mView.findFocus(); 2837 if (focused instanceof ViewGroup) { 2838 ViewGroup group = (ViewGroup) focused; 2839 if (group.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 2840 && isViewDescendantOf(v, focused)) { 2841 v.requestFocus(); 2842 } 2843 } 2844 } 2845 } 2846 } 2847 2848 @Override 2849 public void recomputeViewAttributes(View child) { 2850 checkThread(); 2851 if (mView == child) { 2852 mAttachInfo.mRecomputeGlobalAttributes = true; 2853 if (!mWillDrawSoon) { 2854 scheduleTraversals(); 2855 } 2856 } 2857 } 2858 2859 void dispatchDetachedFromWindow() { 2860 if (mView != null && mView.mAttachInfo != null) { 2861 if (mAttachInfo.mHardwareRenderer != null && 2862 mAttachInfo.mHardwareRenderer.isEnabled()) { 2863 mAttachInfo.mHardwareRenderer.validate(); 2864 } 2865 mAttachInfo.mTreeObserver.dispatchOnWindowAttachedChange(false); 2866 mView.dispatchDetachedFromWindow(); 2867 } 2868 2869 mAccessibilityInteractionConnectionManager.ensureNoConnection(); 2870 mAccessibilityManager.removeAccessibilityStateChangeListener( 2871 mAccessibilityInteractionConnectionManager); 2872 removeSendWindowContentChangedCallback(); 2873 2874 destroyHardwareRenderer(); 2875 2876 setAccessibilityFocus(null, null); 2877 2878 mView.assignParent(null); 2879 mView = null; 2880 mAttachInfo.mRootView = null; 2881 mAttachInfo.mSurface = null; 2882 2883 mSurface.release(); 2884 2885 if (mInputQueueCallback != null && mInputQueue != null) { 2886 mInputQueueCallback.onInputQueueDestroyed(mInputQueue); 2887 mInputQueue.dispose(); 2888 mInputQueueCallback = null; 2889 mInputQueue = null; 2890 } 2891 if (mInputEventReceiver != null) { 2892 mInputEventReceiver.dispose(); 2893 mInputEventReceiver = null; 2894 } 2895 try { 2896 mWindowSession.remove(mWindow); 2897 } catch (RemoteException e) { 2898 } 2899 2900 // Dispose the input channel after removing the window so the Window Manager 2901 // doesn't interpret the input channel being closed as an abnormal termination. 2902 if (mInputChannel != null) { 2903 mInputChannel.dispose(); 2904 mInputChannel = null; 2905 } 2906 2907 mDisplayManager.unregisterDisplayListener(mDisplayListener); 2908 2909 unscheduleTraversals(); 2910 } 2911 2912 void updateConfiguration(Configuration config, boolean force) { 2913 if (DEBUG_CONFIGURATION) Log.v(TAG, 2914 "Applying new config to window " 2915 + mWindowAttributes.getTitle() 2916 + ": " + config); 2917 2918 CompatibilityInfo ci = mDisplayAdjustments.getCompatibilityInfo(); 2919 if (!ci.equals(CompatibilityInfo.DEFAULT_COMPATIBILITY_INFO)) { 2920 config = new Configuration(config); 2921 ci.applyToConfiguration(mNoncompatDensity, config); 2922 } 2923 2924 synchronized (sConfigCallbacks) { 2925 for (int i=sConfigCallbacks.size()-1; i>=0; i--) { 2926 sConfigCallbacks.get(i).onConfigurationChanged(config); 2927 } 2928 } 2929 if (mView != null) { 2930 // At this point the resources have been updated to 2931 // have the most recent config, whatever that is. Use 2932 // the one in them which may be newer. 2933 config = mView.getResources().getConfiguration(); 2934 if (force || mLastConfiguration.diff(config) != 0) { 2935 final int lastLayoutDirection = mLastConfiguration.getLayoutDirection(); 2936 final int currentLayoutDirection = config.getLayoutDirection(); 2937 mLastConfiguration.setTo(config); 2938 if (lastLayoutDirection != currentLayoutDirection && 2939 mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 2940 mView.setLayoutDirection(currentLayoutDirection); 2941 } 2942 mView.dispatchConfigurationChanged(config); 2943 } 2944 } 2945 } 2946 2947 /** 2948 * Return true if child is an ancestor of parent, (or equal to the parent). 2949 */ 2950 public static boolean isViewDescendantOf(View child, View parent) { 2951 if (child == parent) { 2952 return true; 2953 } 2954 2955 final ViewParent theParent = child.getParent(); 2956 return (theParent instanceof ViewGroup) && isViewDescendantOf((View) theParent, parent); 2957 } 2958 2959 private static void forceLayout(View view) { 2960 view.forceLayout(); 2961 if (view instanceof ViewGroup) { 2962 ViewGroup group = (ViewGroup) view; 2963 final int count = group.getChildCount(); 2964 for (int i = 0; i < count; i++) { 2965 forceLayout(group.getChildAt(i)); 2966 } 2967 } 2968 } 2969 2970 private final static int MSG_INVALIDATE = 1; 2971 private final static int MSG_INVALIDATE_RECT = 2; 2972 private final static int MSG_DIE = 3; 2973 private final static int MSG_RESIZED = 4; 2974 private final static int MSG_RESIZED_REPORT = 5; 2975 private final static int MSG_WINDOW_FOCUS_CHANGED = 6; 2976 private final static int MSG_DISPATCH_INPUT_EVENT = 7; 2977 private final static int MSG_DISPATCH_APP_VISIBILITY = 8; 2978 private final static int MSG_DISPATCH_GET_NEW_SURFACE = 9; 2979 private final static int MSG_DISPATCH_KEY_FROM_IME = 11; 2980 private final static int MSG_FINISH_INPUT_CONNECTION = 12; 2981 private final static int MSG_CHECK_FOCUS = 13; 2982 private final static int MSG_CLOSE_SYSTEM_DIALOGS = 14; 2983 private final static int MSG_DISPATCH_DRAG_EVENT = 15; 2984 private final static int MSG_DISPATCH_DRAG_LOCATION_EVENT = 16; 2985 private final static int MSG_DISPATCH_SYSTEM_UI_VISIBILITY = 17; 2986 private final static int MSG_UPDATE_CONFIGURATION = 18; 2987 private final static int MSG_PROCESS_INPUT_EVENTS = 19; 2988 private final static int MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST = 21; 2989 private final static int MSG_DISPATCH_DONE_ANIMATING = 22; 2990 private final static int MSG_INVALIDATE_WORLD = 23; 2991 private final static int MSG_WINDOW_MOVED = 24; 2992 private final static int MSG_FLUSH_LAYER_UPDATES = 25; 2993 2994 final class ViewRootHandler extends Handler { 2995 @Override 2996 public String getMessageName(Message message) { 2997 switch (message.what) { 2998 case MSG_INVALIDATE: 2999 return "MSG_INVALIDATE"; 3000 case MSG_INVALIDATE_RECT: 3001 return "MSG_INVALIDATE_RECT"; 3002 case MSG_DIE: 3003 return "MSG_DIE"; 3004 case MSG_RESIZED: 3005 return "MSG_RESIZED"; 3006 case MSG_RESIZED_REPORT: 3007 return "MSG_RESIZED_REPORT"; 3008 case MSG_WINDOW_FOCUS_CHANGED: 3009 return "MSG_WINDOW_FOCUS_CHANGED"; 3010 case MSG_DISPATCH_INPUT_EVENT: 3011 return "MSG_DISPATCH_INPUT_EVENT"; 3012 case MSG_DISPATCH_APP_VISIBILITY: 3013 return "MSG_DISPATCH_APP_VISIBILITY"; 3014 case MSG_DISPATCH_GET_NEW_SURFACE: 3015 return "MSG_DISPATCH_GET_NEW_SURFACE"; 3016 case MSG_DISPATCH_KEY_FROM_IME: 3017 return "MSG_DISPATCH_KEY_FROM_IME"; 3018 case MSG_FINISH_INPUT_CONNECTION: 3019 return "MSG_FINISH_INPUT_CONNECTION"; 3020 case MSG_CHECK_FOCUS: 3021 return "MSG_CHECK_FOCUS"; 3022 case MSG_CLOSE_SYSTEM_DIALOGS: 3023 return "MSG_CLOSE_SYSTEM_DIALOGS"; 3024 case MSG_DISPATCH_DRAG_EVENT: 3025 return "MSG_DISPATCH_DRAG_EVENT"; 3026 case MSG_DISPATCH_DRAG_LOCATION_EVENT: 3027 return "MSG_DISPATCH_DRAG_LOCATION_EVENT"; 3028 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: 3029 return "MSG_DISPATCH_SYSTEM_UI_VISIBILITY"; 3030 case MSG_UPDATE_CONFIGURATION: 3031 return "MSG_UPDATE_CONFIGURATION"; 3032 case MSG_PROCESS_INPUT_EVENTS: 3033 return "MSG_PROCESS_INPUT_EVENTS"; 3034 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: 3035 return "MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST"; 3036 case MSG_DISPATCH_DONE_ANIMATING: 3037 return "MSG_DISPATCH_DONE_ANIMATING"; 3038 case MSG_WINDOW_MOVED: 3039 return "MSG_WINDOW_MOVED"; 3040 case MSG_FLUSH_LAYER_UPDATES: 3041 return "MSG_FLUSH_LAYER_UPDATES"; 3042 } 3043 return super.getMessageName(message); 3044 } 3045 3046 @Override 3047 public void handleMessage(Message msg) { 3048 switch (msg.what) { 3049 case MSG_INVALIDATE: 3050 ((View) msg.obj).invalidate(); 3051 break; 3052 case MSG_INVALIDATE_RECT: 3053 final View.AttachInfo.InvalidateInfo info = (View.AttachInfo.InvalidateInfo) msg.obj; 3054 info.target.invalidate(info.left, info.top, info.right, info.bottom); 3055 info.recycle(); 3056 break; 3057 case MSG_PROCESS_INPUT_EVENTS: 3058 mProcessInputEventsScheduled = false; 3059 doProcessInputEvents(); 3060 break; 3061 case MSG_DISPATCH_APP_VISIBILITY: 3062 handleAppVisibility(msg.arg1 != 0); 3063 break; 3064 case MSG_DISPATCH_GET_NEW_SURFACE: 3065 handleGetNewSurface(); 3066 break; 3067 case MSG_RESIZED: { 3068 // Recycled in the fall through... 3069 SomeArgs args = (SomeArgs) msg.obj; 3070 if (mWinFrame.equals(args.arg1) 3071 && mPendingOverscanInsets.equals(args.arg5) 3072 && mPendingContentInsets.equals(args.arg2) 3073 && mPendingVisibleInsets.equals(args.arg3) 3074 && args.arg4 == null) { 3075 break; 3076 } 3077 } // fall through... 3078 case MSG_RESIZED_REPORT: 3079 if (mAdded) { 3080 SomeArgs args = (SomeArgs) msg.obj; 3081 3082 Configuration config = (Configuration) args.arg4; 3083 if (config != null) { 3084 updateConfiguration(config, false); 3085 } 3086 3087 mWinFrame.set((Rect) args.arg1); 3088 mPendingOverscanInsets.set((Rect) args.arg5); 3089 mPendingContentInsets.set((Rect) args.arg2); 3090 mPendingVisibleInsets.set((Rect) args.arg3); 3091 3092 args.recycle(); 3093 3094 if (msg.what == MSG_RESIZED_REPORT) { 3095 mReportNextDraw = true; 3096 } 3097 3098 if (mView != null) { 3099 forceLayout(mView); 3100 } 3101 3102 requestLayout(); 3103 } 3104 break; 3105 case MSG_WINDOW_MOVED: 3106 if (mAdded) { 3107 final int w = mWinFrame.width(); 3108 final int h = mWinFrame.height(); 3109 final int l = msg.arg1; 3110 final int t = msg.arg2; 3111 mWinFrame.left = l; 3112 mWinFrame.right = l + w; 3113 mWinFrame.top = t; 3114 mWinFrame.bottom = t + h; 3115 3116 if (mView != null) { 3117 forceLayout(mView); 3118 } 3119 requestLayout(); 3120 } 3121 break; 3122 case MSG_WINDOW_FOCUS_CHANGED: { 3123 if (mAdded) { 3124 boolean hasWindowFocus = msg.arg1 != 0; 3125 mAttachInfo.mHasWindowFocus = hasWindowFocus; 3126 3127 profileRendering(hasWindowFocus); 3128 3129 if (hasWindowFocus) { 3130 boolean inTouchMode = msg.arg2 != 0; 3131 ensureTouchModeLocally(inTouchMode); 3132 3133 if (mAttachInfo.mHardwareRenderer != null && mSurface.isValid()){ 3134 mFullRedrawNeeded = true; 3135 try { 3136 mAttachInfo.mHardwareRenderer.initializeIfNeeded( 3137 mWidth, mHeight, mHolder.getSurface()); 3138 } catch (OutOfResourcesException e) { 3139 Log.e(TAG, "OutOfResourcesException locking surface", e); 3140 try { 3141 if (!mWindowSession.outOfMemory(mWindow)) { 3142 Slog.w(TAG, "No processes killed for memory; killing self"); 3143 Process.killProcess(Process.myPid()); 3144 } 3145 } catch (RemoteException ex) { 3146 } 3147 // Retry in a bit. 3148 sendMessageDelayed(obtainMessage(msg.what, msg.arg1, msg.arg2), 500); 3149 return; 3150 } 3151 } 3152 } 3153 3154 mLastWasImTarget = WindowManager.LayoutParams 3155 .mayUseInputMethod(mWindowAttributes.flags); 3156 3157 InputMethodManager imm = InputMethodManager.peekInstance(); 3158 if (mView != null) { 3159 if (hasWindowFocus && imm != null && mLastWasImTarget && 3160 !isInLocalFocusMode()) { 3161 imm.startGettingWindowFocus(mView); 3162 } 3163 mAttachInfo.mKeyDispatchState.reset(); 3164 mView.dispatchWindowFocusChanged(hasWindowFocus); 3165 mAttachInfo.mTreeObserver.dispatchOnWindowFocusChange(hasWindowFocus); 3166 } 3167 3168 // Note: must be done after the focus change callbacks, 3169 // so all of the view state is set up correctly. 3170 if (hasWindowFocus) { 3171 if (imm != null && mLastWasImTarget && !isInLocalFocusMode()) { 3172 imm.onWindowFocus(mView, mView.findFocus(), 3173 mWindowAttributes.softInputMode, 3174 !mHasHadWindowFocus, mWindowAttributes.flags); 3175 } 3176 // Clear the forward bit. We can just do this directly, since 3177 // the window manager doesn't care about it. 3178 mWindowAttributes.softInputMode &= 3179 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3180 ((WindowManager.LayoutParams)mView.getLayoutParams()) 3181 .softInputMode &= 3182 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3183 mHasHadWindowFocus = true; 3184 } 3185 3186 setAccessibilityFocus(null, null); 3187 3188 if (mView != null && mAccessibilityManager.isEnabled()) { 3189 if (hasWindowFocus) { 3190 mView.sendAccessibilityEvent( 3191 AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 3192 } 3193 } 3194 } 3195 } break; 3196 case MSG_DIE: 3197 doDie(); 3198 break; 3199 case MSG_DISPATCH_INPUT_EVENT: { 3200 InputEvent event = (InputEvent)msg.obj; 3201 enqueueInputEvent(event, null, 0, true); 3202 } break; 3203 case MSG_DISPATCH_KEY_FROM_IME: { 3204 if (LOCAL_LOGV) Log.v( 3205 TAG, "Dispatching key " 3206 + msg.obj + " from IME to " + mView); 3207 KeyEvent event = (KeyEvent)msg.obj; 3208 if ((event.getFlags()&KeyEvent.FLAG_FROM_SYSTEM) != 0) { 3209 // The IME is trying to say this event is from the 3210 // system! Bad bad bad! 3211 //noinspection UnusedAssignment 3212 event = KeyEvent.changeFlags(event, event.getFlags() & ~KeyEvent.FLAG_FROM_SYSTEM); 3213 } 3214 enqueueInputEvent(event, null, QueuedInputEvent.FLAG_DELIVER_POST_IME, true); 3215 } break; 3216 case MSG_FINISH_INPUT_CONNECTION: { 3217 InputMethodManager imm = InputMethodManager.peekInstance(); 3218 if (imm != null) { 3219 imm.reportFinishInputConnection((InputConnection)msg.obj); 3220 } 3221 } break; 3222 case MSG_CHECK_FOCUS: { 3223 InputMethodManager imm = InputMethodManager.peekInstance(); 3224 if (imm != null) { 3225 imm.checkFocus(); 3226 } 3227 } break; 3228 case MSG_CLOSE_SYSTEM_DIALOGS: { 3229 if (mView != null) { 3230 mView.onCloseSystemDialogs((String)msg.obj); 3231 } 3232 } break; 3233 case MSG_DISPATCH_DRAG_EVENT: 3234 case MSG_DISPATCH_DRAG_LOCATION_EVENT: { 3235 DragEvent event = (DragEvent)msg.obj; 3236 event.mLocalState = mLocalDragState; // only present when this app called startDrag() 3237 handleDragEvent(event); 3238 } break; 3239 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: { 3240 handleDispatchSystemUiVisibilityChanged((SystemUiVisibilityInfo) msg.obj); 3241 } break; 3242 case MSG_UPDATE_CONFIGURATION: { 3243 Configuration config = (Configuration)msg.obj; 3244 if (config.isOtherSeqNewer(mLastConfiguration)) { 3245 config = mLastConfiguration; 3246 } 3247 updateConfiguration(config, false); 3248 } break; 3249 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: { 3250 setAccessibilityFocus(null, null); 3251 } break; 3252 case MSG_DISPATCH_DONE_ANIMATING: { 3253 handleDispatchDoneAnimating(); 3254 } break; 3255 case MSG_INVALIDATE_WORLD: { 3256 if (mView != null) { 3257 invalidateWorld(mView); 3258 } 3259 } break; 3260 case MSG_FLUSH_LAYER_UPDATES: { 3261 flushHardwareLayerUpdates(); 3262 } break; 3263 } 3264 } 3265 } 3266 3267 final ViewRootHandler mHandler = new ViewRootHandler(); 3268 3269 /** 3270 * Something in the current window tells us we need to change the touch mode. For 3271 * example, we are not in touch mode, and the user touches the screen. 3272 * 3273 * If the touch mode has changed, tell the window manager, and handle it locally. 3274 * 3275 * @param inTouchMode Whether we want to be in touch mode. 3276 * @return True if the touch mode changed and focus changed was changed as a result 3277 */ 3278 boolean ensureTouchMode(boolean inTouchMode) { 3279 if (DBG) Log.d("touchmode", "ensureTouchMode(" + inTouchMode + "), current " 3280 + "touch mode is " + mAttachInfo.mInTouchMode); 3281 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3282 3283 // tell the window manager 3284 try { 3285 if (!isInLocalFocusMode()) { 3286 mWindowSession.setInTouchMode(inTouchMode); 3287 } 3288 } catch (RemoteException e) { 3289 throw new RuntimeException(e); 3290 } 3291 3292 // handle the change 3293 return ensureTouchModeLocally(inTouchMode); 3294 } 3295 3296 /** 3297 * Ensure that the touch mode for this window is set, and if it is changing, 3298 * take the appropriate action. 3299 * @param inTouchMode Whether we want to be in touch mode. 3300 * @return True if the touch mode changed and focus changed was changed as a result 3301 */ 3302 private boolean ensureTouchModeLocally(boolean inTouchMode) { 3303 if (DBG) Log.d("touchmode", "ensureTouchModeLocally(" + inTouchMode + "), current " 3304 + "touch mode is " + mAttachInfo.mInTouchMode); 3305 3306 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3307 3308 mAttachInfo.mInTouchMode = inTouchMode; 3309 mAttachInfo.mTreeObserver.dispatchOnTouchModeChanged(inTouchMode); 3310 3311 return (inTouchMode) ? enterTouchMode() : leaveTouchMode(); 3312 } 3313 3314 private boolean enterTouchMode() { 3315 if (mView != null && mView.hasFocus()) { 3316 // note: not relying on mFocusedView here because this could 3317 // be when the window is first being added, and mFocused isn't 3318 // set yet. 3319 final View focused = mView.findFocus(); 3320 if (focused != null && !focused.isFocusableInTouchMode()) { 3321 final ViewGroup ancestorToTakeFocus = findAncestorToTakeFocusInTouchMode(focused); 3322 if (ancestorToTakeFocus != null) { 3323 // there is an ancestor that wants focus after its 3324 // descendants that is focusable in touch mode.. give it 3325 // focus 3326 return ancestorToTakeFocus.requestFocus(); 3327 } else { 3328 // There's nothing to focus. Clear and propagate through the 3329 // hierarchy, but don't attempt to place new focus. 3330 focused.clearFocusInternal(true, false); 3331 return true; 3332 } 3333 } 3334 } 3335 return false; 3336 } 3337 3338 /** 3339 * Find an ancestor of focused that wants focus after its descendants and is 3340 * focusable in touch mode. 3341 * @param focused The currently focused view. 3342 * @return An appropriate view, or null if no such view exists. 3343 */ 3344 private static ViewGroup findAncestorToTakeFocusInTouchMode(View focused) { 3345 ViewParent parent = focused.getParent(); 3346 while (parent instanceof ViewGroup) { 3347 final ViewGroup vgParent = (ViewGroup) parent; 3348 if (vgParent.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 3349 && vgParent.isFocusableInTouchMode()) { 3350 return vgParent; 3351 } 3352 if (vgParent.isRootNamespace()) { 3353 return null; 3354 } else { 3355 parent = vgParent.getParent(); 3356 } 3357 } 3358 return null; 3359 } 3360 3361 private boolean leaveTouchMode() { 3362 if (mView != null) { 3363 if (mView.hasFocus()) { 3364 View focusedView = mView.findFocus(); 3365 if (!(focusedView instanceof ViewGroup)) { 3366 // some view has focus, let it keep it 3367 return false; 3368 } else if (((ViewGroup) focusedView).getDescendantFocusability() != 3369 ViewGroup.FOCUS_AFTER_DESCENDANTS) { 3370 // some view group has focus, and doesn't prefer its children 3371 // over itself for focus, so let them keep it. 3372 return false; 3373 } 3374 } 3375 3376 // find the best view to give focus to in this brave new non-touch-mode 3377 // world 3378 final View focused = focusSearch(null, View.FOCUS_DOWN); 3379 if (focused != null) { 3380 return focused.requestFocus(View.FOCUS_DOWN); 3381 } 3382 } 3383 return false; 3384 } 3385 3386 /** 3387 * Base class for implementing a stage in the chain of responsibility 3388 * for processing input events. 3389 * <p> 3390 * Events are delivered to the stage by the {@link #deliver} method. The stage 3391 * then has the choice of finishing the event or forwarding it to the next stage. 3392 * </p> 3393 */ 3394 abstract class InputStage { 3395 private final InputStage mNext; 3396 3397 protected static final int FORWARD = 0; 3398 protected static final int FINISH_HANDLED = 1; 3399 protected static final int FINISH_NOT_HANDLED = 2; 3400 3401 /** 3402 * Creates an input stage. 3403 * @param next The next stage to which events should be forwarded. 3404 */ 3405 public InputStage(InputStage next) { 3406 mNext = next; 3407 } 3408 3409 /** 3410 * Delivers an event to be processed. 3411 */ 3412 public final void deliver(QueuedInputEvent q) { 3413 if ((q.mFlags & QueuedInputEvent.FLAG_FINISHED) != 0) { 3414 forward(q); 3415 } else if (shouldDropInputEvent(q)) { 3416 finish(q, false); 3417 } else { 3418 apply(q, onProcess(q)); 3419 } 3420 } 3421 3422 /** 3423 * Marks the the input event as finished then forwards it to the next stage. 3424 */ 3425 protected void finish(QueuedInputEvent q, boolean handled) { 3426 q.mFlags |= QueuedInputEvent.FLAG_FINISHED; 3427 if (handled) { 3428 q.mFlags |= QueuedInputEvent.FLAG_FINISHED_HANDLED; 3429 } 3430 forward(q); 3431 } 3432 3433 /** 3434 * Forwards the event to the next stage. 3435 */ 3436 protected void forward(QueuedInputEvent q) { 3437 onDeliverToNext(q); 3438 } 3439 3440 /** 3441 * Applies a result code from {@link #onProcess} to the specified event. 3442 */ 3443 protected void apply(QueuedInputEvent q, int result) { 3444 if (result == FORWARD) { 3445 forward(q); 3446 } else if (result == FINISH_HANDLED) { 3447 finish(q, true); 3448 } else if (result == FINISH_NOT_HANDLED) { 3449 finish(q, false); 3450 } else { 3451 throw new IllegalArgumentException("Invalid result: " + result); 3452 } 3453 } 3454 3455 /** 3456 * Called when an event is ready to be processed. 3457 * @return A result code indicating how the event was handled. 3458 */ 3459 protected int onProcess(QueuedInputEvent q) { 3460 return FORWARD; 3461 } 3462 3463 /** 3464 * Called when an event is being delivered to the next stage. 3465 */ 3466 protected void onDeliverToNext(QueuedInputEvent q) { 3467 if (mNext != null) { 3468 mNext.deliver(q); 3469 } else { 3470 finishInputEvent(q); 3471 } 3472 } 3473 3474 protected boolean shouldDropInputEvent(QueuedInputEvent q) { 3475 if (mView == null || !mAdded) { 3476 Slog.w(TAG, "Dropping event due to root view being removed: " + q.mEvent); 3477 return true; 3478 } else if (!mAttachInfo.mHasWindowFocus && 3479 !q.mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER) && 3480 !isTerminalInputEvent(q.mEvent)) { 3481 // If this is a focused event and the window doesn't currently have input focus, 3482 // then drop this event. This could be an event that came back from the previous 3483 // stage but the window has lost focus in the meantime. 3484 Slog.w(TAG, "Dropping event due to no window focus: " + q.mEvent); 3485 return true; 3486 } 3487 return false; 3488 } 3489 3490 void dump(String prefix, PrintWriter writer) { 3491 if (mNext != null) { 3492 mNext.dump(prefix, writer); 3493 } 3494 } 3495 } 3496 3497 /** 3498 * Base class for implementing an input pipeline stage that supports 3499 * asynchronous and out-of-order processing of input events. 3500 * <p> 3501 * In addition to what a normal input stage can do, an asynchronous 3502 * input stage may also defer an input event that has been delivered to it 3503 * and finish or forward it later. 3504 * </p> 3505 */ 3506 abstract class AsyncInputStage extends InputStage { 3507 private final String mTraceCounter; 3508 3509 private QueuedInputEvent mQueueHead; 3510 private QueuedInputEvent mQueueTail; 3511 private int mQueueLength; 3512 3513 protected static final int DEFER = 3; 3514 3515 /** 3516 * Creates an asynchronous input stage. 3517 * @param next The next stage to which events should be forwarded. 3518 * @param traceCounter The name of a counter to record the size of 3519 * the queue of pending events. 3520 */ 3521 public AsyncInputStage(InputStage next, String traceCounter) { 3522 super(next); 3523 mTraceCounter = traceCounter; 3524 } 3525 3526 /** 3527 * Marks the event as deferred, which is to say that it will be handled 3528 * asynchronously. The caller is responsible for calling {@link #forward} 3529 * or {@link #finish} later when it is done handling the event. 3530 */ 3531 protected void defer(QueuedInputEvent q) { 3532 q.mFlags |= QueuedInputEvent.FLAG_DEFERRED; 3533 enqueue(q); 3534 } 3535 3536 @Override 3537 protected void forward(QueuedInputEvent q) { 3538 // Clear the deferred flag. 3539 q.mFlags &= ~QueuedInputEvent.FLAG_DEFERRED; 3540 3541 // Fast path if the queue is empty. 3542 QueuedInputEvent curr = mQueueHead; 3543 if (curr == null) { 3544 super.forward(q); 3545 return; 3546 } 3547 3548 // Determine whether the event must be serialized behind any others 3549 // before it can be delivered to the next stage. This is done because 3550 // deferred events might be handled out of order by the stage. 3551 final int deviceId = q.mEvent.getDeviceId(); 3552 QueuedInputEvent prev = null; 3553 boolean blocked = false; 3554 while (curr != null && curr != q) { 3555 if (!blocked && deviceId == curr.mEvent.getDeviceId()) { 3556 blocked = true; 3557 } 3558 prev = curr; 3559 curr = curr.mNext; 3560 } 3561 3562 // If the event is blocked, then leave it in the queue to be delivered later. 3563 // Note that the event might not yet be in the queue if it was not previously 3564 // deferred so we will enqueue it if needed. 3565 if (blocked) { 3566 if (curr == null) { 3567 enqueue(q); 3568 } 3569 return; 3570 } 3571 3572 // The event is not blocked. Deliver it immediately. 3573 if (curr != null) { 3574 curr = curr.mNext; 3575 dequeue(q, prev); 3576 } 3577 super.forward(q); 3578 3579 // Dequeuing this event may have unblocked successors. Deliver them. 3580 while (curr != null) { 3581 if (deviceId == curr.mEvent.getDeviceId()) { 3582 if ((curr.mFlags & QueuedInputEvent.FLAG_DEFERRED) != 0) { 3583 break; 3584 } 3585 QueuedInputEvent next = curr.mNext; 3586 dequeue(curr, prev); 3587 super.forward(curr); 3588 curr = next; 3589 } else { 3590 prev = curr; 3591 curr = curr.mNext; 3592 } 3593 } 3594 } 3595 3596 @Override 3597 protected void apply(QueuedInputEvent q, int result) { 3598 if (result == DEFER) { 3599 defer(q); 3600 } else { 3601 super.apply(q, result); 3602 } 3603 } 3604 3605 private void enqueue(QueuedInputEvent q) { 3606 if (mQueueTail == null) { 3607 mQueueHead = q; 3608 mQueueTail = q; 3609 } else { 3610 mQueueTail.mNext = q; 3611 mQueueTail = q; 3612 } 3613 3614 mQueueLength += 1; 3615 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 3616 } 3617 3618 private void dequeue(QueuedInputEvent q, QueuedInputEvent prev) { 3619 if (prev == null) { 3620 mQueueHead = q.mNext; 3621 } else { 3622 prev.mNext = q.mNext; 3623 } 3624 if (mQueueTail == q) { 3625 mQueueTail = prev; 3626 } 3627 q.mNext = null; 3628 3629 mQueueLength -= 1; 3630 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 3631 } 3632 3633 @Override 3634 void dump(String prefix, PrintWriter writer) { 3635 writer.print(prefix); 3636 writer.print(getClass().getName()); 3637 writer.print(": mQueueLength="); 3638 writer.println(mQueueLength); 3639 3640 super.dump(prefix, writer); 3641 } 3642 } 3643 3644 /** 3645 * Delivers pre-ime input events to a native activity. 3646 * Does not support pointer events. 3647 */ 3648 final class NativePreImeInputStage extends AsyncInputStage 3649 implements InputQueue.FinishedInputEventCallback { 3650 public NativePreImeInputStage(InputStage next, String traceCounter) { 3651 super(next, traceCounter); 3652 } 3653 3654 @Override 3655 protected int onProcess(QueuedInputEvent q) { 3656 if (mInputQueue != null && q.mEvent instanceof KeyEvent) { 3657 mInputQueue.sendInputEvent(q.mEvent, q, true, this); 3658 return DEFER; 3659 } 3660 return FORWARD; 3661 } 3662 3663 @Override 3664 public void onFinishedInputEvent(Object token, boolean handled) { 3665 QueuedInputEvent q = (QueuedInputEvent)token; 3666 if (handled) { 3667 finish(q, true); 3668 return; 3669 } 3670 forward(q); 3671 } 3672 } 3673 3674 /** 3675 * Delivers pre-ime input events to the view hierarchy. 3676 * Does not support pointer events. 3677 */ 3678 final class ViewPreImeInputStage extends InputStage { 3679 public ViewPreImeInputStage(InputStage next) { 3680 super(next); 3681 } 3682 3683 @Override 3684 protected int onProcess(QueuedInputEvent q) { 3685 if (q.mEvent instanceof KeyEvent) { 3686 return processKeyEvent(q); 3687 } 3688 return FORWARD; 3689 } 3690 3691 private int processKeyEvent(QueuedInputEvent q) { 3692 final KeyEvent event = (KeyEvent)q.mEvent; 3693 if (mView.dispatchKeyEventPreIme(event)) { 3694 return FINISH_HANDLED; 3695 } 3696 return FORWARD; 3697 } 3698 } 3699 3700 /** 3701 * Delivers input events to the ime. 3702 * Does not support pointer events. 3703 */ 3704 final class ImeInputStage extends AsyncInputStage 3705 implements InputMethodManager.FinishedInputEventCallback { 3706 public ImeInputStage(InputStage next, String traceCounter) { 3707 super(next, traceCounter); 3708 } 3709 3710 @Override 3711 protected int onProcess(QueuedInputEvent q) { 3712 if (mLastWasImTarget && !isInLocalFocusMode()) { 3713 InputMethodManager imm = InputMethodManager.peekInstance(); 3714 if (imm != null) { 3715 final InputEvent event = q.mEvent; 3716 if (DEBUG_IMF) Log.v(TAG, "Sending input event to IME: " + event); 3717 int result = imm.dispatchInputEvent(event, q, this, mHandler); 3718 if (result == InputMethodManager.DISPATCH_HANDLED) { 3719 return FINISH_HANDLED; 3720 } else if (result == InputMethodManager.DISPATCH_NOT_HANDLED) { 3721 return FINISH_NOT_HANDLED; 3722 } else { 3723 return DEFER; // callback will be invoked later 3724 } 3725 } 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 * Performs early processing of post-ime input events. 3743 */ 3744 final class EarlyPostImeInputStage extends InputStage { 3745 public EarlyPostImeInputStage(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 } 3758 } 3759 return FORWARD; 3760 } 3761 3762 private int processKeyEvent(QueuedInputEvent q) { 3763 final KeyEvent event = (KeyEvent)q.mEvent; 3764 3765 // If the key's purpose is to exit touch mode then we consume it 3766 // and consider it handled. 3767 if (checkForLeavingTouchModeAndConsume(event)) { 3768 return FINISH_HANDLED; 3769 } 3770 3771 // Make sure the fallback event policy sees all keys that will be 3772 // delivered to the view hierarchy. 3773 mFallbackEventHandler.preDispatchKeyEvent(event); 3774 return FORWARD; 3775 } 3776 3777 private int processPointerEvent(QueuedInputEvent q) { 3778 final MotionEvent event = (MotionEvent)q.mEvent; 3779 3780 // Translate the pointer event for compatibility, if needed. 3781 if (mTranslator != null) { 3782 mTranslator.translateEventInScreenToAppWindow(event); 3783 } 3784 3785 // Enter touch mode on down or scroll. 3786 final int action = event.getAction(); 3787 if (action == MotionEvent.ACTION_DOWN || action == MotionEvent.ACTION_SCROLL) { 3788 ensureTouchMode(true); 3789 } 3790 3791 // Offset the scroll position. 3792 if (mCurScrollY != 0) { 3793 event.offsetLocation(0, mCurScrollY); 3794 } 3795 3796 // Remember the touch position for possible drag-initiation. 3797 if (event.isTouchEvent()) { 3798 mLastTouchPoint.x = event.getRawX(); 3799 mLastTouchPoint.y = event.getRawY(); 3800 } 3801 return FORWARD; 3802 } 3803 } 3804 3805 /** 3806 * Delivers post-ime input events to a native activity. 3807 */ 3808 final class NativePostImeInputStage extends AsyncInputStage 3809 implements InputQueue.FinishedInputEventCallback { 3810 public NativePostImeInputStage(InputStage next, String traceCounter) { 3811 super(next, traceCounter); 3812 } 3813 3814 @Override 3815 protected int onProcess(QueuedInputEvent q) { 3816 if (mInputQueue != null) { 3817 mInputQueue.sendInputEvent(q.mEvent, q, false, this); 3818 return DEFER; 3819 } 3820 return FORWARD; 3821 } 3822 3823 @Override 3824 public void onFinishedInputEvent(Object token, boolean handled) { 3825 QueuedInputEvent q = (QueuedInputEvent)token; 3826 if (handled) { 3827 finish(q, true); 3828 return; 3829 } 3830 forward(q); 3831 } 3832 } 3833 3834 /** 3835 * Delivers post-ime input events to the view hierarchy. 3836 */ 3837 final class ViewPostImeInputStage extends InputStage { 3838 public ViewPostImeInputStage(InputStage next) { 3839 super(next); 3840 } 3841 3842 @Override 3843 protected int onProcess(QueuedInputEvent q) { 3844 if (q.mEvent instanceof KeyEvent) { 3845 return processKeyEvent(q); 3846 } else { 3847 // If delivering a new non-key event, make sure the window is 3848 // now allowed to start updating. 3849 handleDispatchDoneAnimating(); 3850 final int source = q.mEvent.getSource(); 3851 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 3852 return processPointerEvent(q); 3853 } else if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 3854 return processTrackballEvent(q); 3855 } else { 3856 return processGenericMotionEvent(q); 3857 } 3858 } 3859 } 3860 3861 private int processKeyEvent(QueuedInputEvent q) { 3862 final KeyEvent event = (KeyEvent)q.mEvent; 3863 3864 if (event.getAction() != KeyEvent.ACTION_UP) { 3865 // If delivering a new key event, make sure the window is 3866 // now allowed to start updating. 3867 handleDispatchDoneAnimating(); 3868 } 3869 3870 // Deliver the key to the view hierarchy. 3871 if (mView.dispatchKeyEvent(event)) { 3872 return FINISH_HANDLED; 3873 } 3874 3875 if (shouldDropInputEvent(q)) { 3876 return FINISH_NOT_HANDLED; 3877 } 3878 3879 // If the Control modifier is held, try to interpret the key as a shortcut. 3880 if (event.getAction() == KeyEvent.ACTION_DOWN 3881 && event.isCtrlPressed() 3882 && event.getRepeatCount() == 0 3883 && !KeyEvent.isModifierKey(event.getKeyCode())) { 3884 if (mView.dispatchKeyShortcutEvent(event)) { 3885 return FINISH_HANDLED; 3886 } 3887 if (shouldDropInputEvent(q)) { 3888 return FINISH_NOT_HANDLED; 3889 } 3890 } 3891 3892 // Apply the fallback event policy. 3893 if (mFallbackEventHandler.dispatchKeyEvent(event)) { 3894 return FINISH_HANDLED; 3895 } 3896 if (shouldDropInputEvent(q)) { 3897 return FINISH_NOT_HANDLED; 3898 } 3899 3900 // Handle automatic focus changes. 3901 if (event.getAction() == KeyEvent.ACTION_DOWN) { 3902 int direction = 0; 3903 switch (event.getKeyCode()) { 3904 case KeyEvent.KEYCODE_DPAD_LEFT: 3905 if (event.hasNoModifiers()) { 3906 direction = View.FOCUS_LEFT; 3907 } 3908 break; 3909 case KeyEvent.KEYCODE_DPAD_RIGHT: 3910 if (event.hasNoModifiers()) { 3911 direction = View.FOCUS_RIGHT; 3912 } 3913 break; 3914 case KeyEvent.KEYCODE_DPAD_UP: 3915 if (event.hasNoModifiers()) { 3916 direction = View.FOCUS_UP; 3917 } 3918 break; 3919 case KeyEvent.KEYCODE_DPAD_DOWN: 3920 if (event.hasNoModifiers()) { 3921 direction = View.FOCUS_DOWN; 3922 } 3923 break; 3924 case KeyEvent.KEYCODE_TAB: 3925 if (event.hasNoModifiers()) { 3926 direction = View.FOCUS_FORWARD; 3927 } else if (event.hasModifiers(KeyEvent.META_SHIFT_ON)) { 3928 direction = View.FOCUS_BACKWARD; 3929 } 3930 break; 3931 } 3932 if (direction != 0) { 3933 View focused = mView.findFocus(); 3934 if (focused != null) { 3935 View v = focused.focusSearch(direction); 3936 if (v != null && v != focused) { 3937 // do the math the get the interesting rect 3938 // of previous focused into the coord system of 3939 // newly focused view 3940 focused.getFocusedRect(mTempRect); 3941 if (mView instanceof ViewGroup) { 3942 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 3943 focused, mTempRect); 3944 ((ViewGroup) mView).offsetRectIntoDescendantCoords( 3945 v, mTempRect); 3946 } 3947 if (v.requestFocus(direction, mTempRect)) { 3948 playSoundEffect(SoundEffectConstants 3949 .getContantForFocusDirection(direction)); 3950 return FINISH_HANDLED; 3951 } 3952 } 3953 3954 // Give the focused view a last chance to handle the dpad key. 3955 if (mView.dispatchUnhandledMove(focused, direction)) { 3956 return FINISH_HANDLED; 3957 } 3958 } else { 3959 // find the best view to give focus to in this non-touch-mode with no-focus 3960 View v = focusSearch(null, direction); 3961 if (v != null && v.requestFocus(direction)) { 3962 return FINISH_HANDLED; 3963 } 3964 } 3965 } 3966 } 3967 return FORWARD; 3968 } 3969 3970 private int processPointerEvent(QueuedInputEvent q) { 3971 final MotionEvent event = (MotionEvent)q.mEvent; 3972 3973 if (mView.dispatchPointerEvent(event)) { 3974 return FINISH_HANDLED; 3975 } 3976 return FORWARD; 3977 } 3978 3979 private int processTrackballEvent(QueuedInputEvent q) { 3980 final MotionEvent event = (MotionEvent)q.mEvent; 3981 3982 if (mView.dispatchTrackballEvent(event)) { 3983 return FINISH_HANDLED; 3984 } 3985 return FORWARD; 3986 } 3987 3988 private int processGenericMotionEvent(QueuedInputEvent q) { 3989 final MotionEvent event = (MotionEvent)q.mEvent; 3990 3991 // Deliver the event to the view. 3992 if (mView.dispatchGenericMotionEvent(event)) { 3993 return FINISH_HANDLED; 3994 } 3995 return FORWARD; 3996 } 3997 } 3998 3999 /** 4000 * Performs synthesis of new input events from unhandled input events. 4001 */ 4002 final class SyntheticInputStage extends InputStage { 4003 private final SyntheticTrackballHandler mTrackball = new SyntheticTrackballHandler(); 4004 private final SyntheticJoystickHandler mJoystick = new SyntheticJoystickHandler(); 4005 private final SyntheticTouchNavigationHandler mTouchNavigation = 4006 new SyntheticTouchNavigationHandler(); 4007 4008 public SyntheticInputStage() { 4009 super(null); 4010 } 4011 4012 @Override 4013 protected int onProcess(QueuedInputEvent q) { 4014 q.mFlags |= QueuedInputEvent.FLAG_RESYNTHESIZED; 4015 if (q.mEvent instanceof MotionEvent) { 4016 final MotionEvent event = (MotionEvent)q.mEvent; 4017 final int source = event.getSource(); 4018 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 4019 mTrackball.process(event); 4020 return FINISH_HANDLED; 4021 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 4022 mJoystick.process(event); 4023 return FINISH_HANDLED; 4024 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 4025 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 4026 mTouchNavigation.process(event); 4027 return FINISH_HANDLED; 4028 } 4029 } 4030 return FORWARD; 4031 } 4032 4033 @Override 4034 protected void onDeliverToNext(QueuedInputEvent q) { 4035 if ((q.mFlags & QueuedInputEvent.FLAG_RESYNTHESIZED) == 0) { 4036 // Cancel related synthetic events if any prior stage has handled the event. 4037 if (q.mEvent instanceof MotionEvent) { 4038 final MotionEvent event = (MotionEvent)q.mEvent; 4039 final int source = event.getSource(); 4040 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 4041 mTrackball.cancel(event); 4042 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 4043 mJoystick.cancel(event); 4044 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 4045 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 4046 mTouchNavigation.cancel(event); 4047 } 4048 } 4049 } 4050 super.onDeliverToNext(q); 4051 } 4052 } 4053 4054 /** 4055 * Creates dpad events from unhandled trackball movements. 4056 */ 4057 final class SyntheticTrackballHandler { 4058 private final TrackballAxis mX = new TrackballAxis(); 4059 private final TrackballAxis mY = new TrackballAxis(); 4060 private long mLastTime; 4061 4062 public void process(MotionEvent event) { 4063 // Translate the trackball event into DPAD keys and try to deliver those. 4064 long curTime = SystemClock.uptimeMillis(); 4065 if ((mLastTime + MAX_TRACKBALL_DELAY) < curTime) { 4066 // It has been too long since the last movement, 4067 // so restart at the beginning. 4068 mX.reset(0); 4069 mY.reset(0); 4070 mLastTime = curTime; 4071 } 4072 4073 final int action = event.getAction(); 4074 final int metaState = event.getMetaState(); 4075 switch (action) { 4076 case MotionEvent.ACTION_DOWN: 4077 mX.reset(2); 4078 mY.reset(2); 4079 enqueueInputEvent(new KeyEvent(curTime, curTime, 4080 KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 4081 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4082 InputDevice.SOURCE_KEYBOARD)); 4083 break; 4084 case MotionEvent.ACTION_UP: 4085 mX.reset(2); 4086 mY.reset(2); 4087 enqueueInputEvent(new KeyEvent(curTime, curTime, 4088 KeyEvent.ACTION_UP, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 4089 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4090 InputDevice.SOURCE_KEYBOARD)); 4091 break; 4092 } 4093 4094 if (DEBUG_TRACKBALL) Log.v(TAG, "TB X=" + mX.position + " step=" 4095 + mX.step + " dir=" + mX.dir + " acc=" + mX.acceleration 4096 + " move=" + event.getX() 4097 + " / Y=" + mY.position + " step=" 4098 + mY.step + " dir=" + mY.dir + " acc=" + mY.acceleration 4099 + " move=" + event.getY()); 4100 final float xOff = mX.collect(event.getX(), event.getEventTime(), "X"); 4101 final float yOff = mY.collect(event.getY(), event.getEventTime(), "Y"); 4102 4103 // Generate DPAD events based on the trackball movement. 4104 // We pick the axis that has moved the most as the direction of 4105 // the DPAD. When we generate DPAD events for one axis, then the 4106 // other axis is reset -- we don't want to perform DPAD jumps due 4107 // to slight movements in the trackball when making major movements 4108 // along the other axis. 4109 int keycode = 0; 4110 int movement = 0; 4111 float accel = 1; 4112 if (xOff > yOff) { 4113 movement = mX.generate(); 4114 if (movement != 0) { 4115 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_RIGHT 4116 : KeyEvent.KEYCODE_DPAD_LEFT; 4117 accel = mX.acceleration; 4118 mY.reset(2); 4119 } 4120 } else if (yOff > 0) { 4121 movement = mY.generate(); 4122 if (movement != 0) { 4123 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_DOWN 4124 : KeyEvent.KEYCODE_DPAD_UP; 4125 accel = mY.acceleration; 4126 mX.reset(2); 4127 } 4128 } 4129 4130 if (keycode != 0) { 4131 if (movement < 0) movement = -movement; 4132 int accelMovement = (int)(movement * accel); 4133 if (DEBUG_TRACKBALL) Log.v(TAG, "Move: movement=" + movement 4134 + " accelMovement=" + accelMovement 4135 + " accel=" + accel); 4136 if (accelMovement > movement) { 4137 if (DEBUG_TRACKBALL) Log.v(TAG, "Delivering fake DPAD: " 4138 + keycode); 4139 movement--; 4140 int repeatCount = accelMovement - movement; 4141 enqueueInputEvent(new KeyEvent(curTime, curTime, 4142 KeyEvent.ACTION_MULTIPLE, keycode, repeatCount, metaState, 4143 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4144 InputDevice.SOURCE_KEYBOARD)); 4145 } 4146 while (movement > 0) { 4147 if (DEBUG_TRACKBALL) Log.v(TAG, "Delivering fake DPAD: " 4148 + keycode); 4149 movement--; 4150 curTime = SystemClock.uptimeMillis(); 4151 enqueueInputEvent(new KeyEvent(curTime, curTime, 4152 KeyEvent.ACTION_DOWN, keycode, 0, metaState, 4153 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4154 InputDevice.SOURCE_KEYBOARD)); 4155 enqueueInputEvent(new KeyEvent(curTime, curTime, 4156 KeyEvent.ACTION_UP, keycode, 0, metaState, 4157 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4158 InputDevice.SOURCE_KEYBOARD)); 4159 } 4160 mLastTime = curTime; 4161 } 4162 } 4163 4164 public void cancel(MotionEvent event) { 4165 mLastTime = Integer.MIN_VALUE; 4166 4167 // If we reach this, we consumed a trackball event. 4168 // Because we will not translate the trackball event into a key event, 4169 // touch mode will not exit, so we exit touch mode here. 4170 if (mView != null && mAdded) { 4171 ensureTouchMode(false); 4172 } 4173 } 4174 } 4175 4176 /** 4177 * Maintains state information for a single trackball axis, generating 4178 * discrete (DPAD) movements based on raw trackball motion. 4179 */ 4180 static final class TrackballAxis { 4181 /** 4182 * The maximum amount of acceleration we will apply. 4183 */ 4184 static final float MAX_ACCELERATION = 20; 4185 4186 /** 4187 * The maximum amount of time (in milliseconds) between events in order 4188 * for us to consider the user to be doing fast trackball movements, 4189 * and thus apply an acceleration. 4190 */ 4191 static final long FAST_MOVE_TIME = 150; 4192 4193 /** 4194 * Scaling factor to the time (in milliseconds) between events to how 4195 * much to multiple/divide the current acceleration. When movement 4196 * is < FAST_MOVE_TIME this multiplies the acceleration; when > 4197 * FAST_MOVE_TIME it divides it. 4198 */ 4199 static final float ACCEL_MOVE_SCALING_FACTOR = (1.0f/40); 4200 4201 static final float FIRST_MOVEMENT_THRESHOLD = 0.5f; 4202 static final float SECOND_CUMULATIVE_MOVEMENT_THRESHOLD = 2.0f; 4203 static final float SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD = 1.0f; 4204 4205 float position; 4206 float acceleration = 1; 4207 long lastMoveTime = 0; 4208 int step; 4209 int dir; 4210 int nonAccelMovement; 4211 4212 void reset(int _step) { 4213 position = 0; 4214 acceleration = 1; 4215 lastMoveTime = 0; 4216 step = _step; 4217 dir = 0; 4218 } 4219 4220 /** 4221 * Add trackball movement into the state. If the direction of movement 4222 * has been reversed, the state is reset before adding the 4223 * movement (so that you don't have to compensate for any previously 4224 * collected movement before see the result of the movement in the 4225 * new direction). 4226 * 4227 * @return Returns the absolute value of the amount of movement 4228 * collected so far. 4229 */ 4230 float collect(float off, long time, String axis) { 4231 long normTime; 4232 if (off > 0) { 4233 normTime = (long)(off * FAST_MOVE_TIME); 4234 if (dir < 0) { 4235 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to positive!"); 4236 position = 0; 4237 step = 0; 4238 acceleration = 1; 4239 lastMoveTime = 0; 4240 } 4241 dir = 1; 4242 } else if (off < 0) { 4243 normTime = (long)((-off) * FAST_MOVE_TIME); 4244 if (dir > 0) { 4245 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to negative!"); 4246 position = 0; 4247 step = 0; 4248 acceleration = 1; 4249 lastMoveTime = 0; 4250 } 4251 dir = -1; 4252 } else { 4253 normTime = 0; 4254 } 4255 4256 // The number of milliseconds between each movement that is 4257 // considered "normal" and will not result in any acceleration 4258 // or deceleration, scaled by the offset we have here. 4259 if (normTime > 0) { 4260 long delta = time - lastMoveTime; 4261 lastMoveTime = time; 4262 float acc = acceleration; 4263 if (delta < normTime) { 4264 // The user is scrolling rapidly, so increase acceleration. 4265 float scale = (normTime-delta) * ACCEL_MOVE_SCALING_FACTOR; 4266 if (scale > 1) acc *= scale; 4267 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " accelerate: off=" 4268 + off + " normTime=" + normTime + " delta=" + delta 4269 + " scale=" + scale + " acc=" + acc); 4270 acceleration = acc < MAX_ACCELERATION ? acc : MAX_ACCELERATION; 4271 } else { 4272 // The user is scrolling slowly, so decrease acceleration. 4273 float scale = (delta-normTime) * ACCEL_MOVE_SCALING_FACTOR; 4274 if (scale > 1) acc /= scale; 4275 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " deccelerate: off=" 4276 + off + " normTime=" + normTime + " delta=" + delta 4277 + " scale=" + scale + " acc=" + acc); 4278 acceleration = acc > 1 ? acc : 1; 4279 } 4280 } 4281 position += off; 4282 return Math.abs(position); 4283 } 4284 4285 /** 4286 * Generate the number of discrete movement events appropriate for 4287 * the currently collected trackball movement. 4288 * 4289 * @return Returns the number of discrete movements, either positive 4290 * or negative, or 0 if there is not enough trackball movement yet 4291 * for a discrete movement. 4292 */ 4293 int generate() { 4294 int movement = 0; 4295 nonAccelMovement = 0; 4296 do { 4297 final int dir = position >= 0 ? 1 : -1; 4298 switch (step) { 4299 // If we are going to execute the first step, then we want 4300 // to do this as soon as possible instead of waiting for 4301 // a full movement, in order to make things look responsive. 4302 case 0: 4303 if (Math.abs(position) < FIRST_MOVEMENT_THRESHOLD) { 4304 return movement; 4305 } 4306 movement += dir; 4307 nonAccelMovement += dir; 4308 step = 1; 4309 break; 4310 // If we have generated the first movement, then we need 4311 // to wait for the second complete trackball motion before 4312 // generating the second discrete movement. 4313 case 1: 4314 if (Math.abs(position) < SECOND_CUMULATIVE_MOVEMENT_THRESHOLD) { 4315 return movement; 4316 } 4317 movement += dir; 4318 nonAccelMovement += dir; 4319 position -= SECOND_CUMULATIVE_MOVEMENT_THRESHOLD * dir; 4320 step = 2; 4321 break; 4322 // After the first two, we generate discrete movements 4323 // consistently with the trackball, applying an acceleration 4324 // if the trackball is moving quickly. This is a simple 4325 // acceleration on top of what we already compute based 4326 // on how quickly the wheel is being turned, to apply 4327 // a longer increasing acceleration to continuous movement 4328 // in one direction. 4329 default: 4330 if (Math.abs(position) < SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD) { 4331 return movement; 4332 } 4333 movement += dir; 4334 position -= dir * SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD; 4335 float acc = acceleration; 4336 acc *= 1.1f; 4337 acceleration = acc < MAX_ACCELERATION ? acc : acceleration; 4338 break; 4339 } 4340 } while (true); 4341 } 4342 } 4343 4344 /** 4345 * Creates dpad events from unhandled joystick movements. 4346 */ 4347 final class SyntheticJoystickHandler extends Handler { 4348 private final static String TAG = "SyntheticJoystickHandler"; 4349 private final static int MSG_ENQUEUE_X_AXIS_KEY_REPEAT = 1; 4350 private final static int MSG_ENQUEUE_Y_AXIS_KEY_REPEAT = 2; 4351 4352 private int mLastXDirection; 4353 private int mLastYDirection; 4354 private int mLastXKeyCode; 4355 private int mLastYKeyCode; 4356 4357 public SyntheticJoystickHandler() { 4358 super(true); 4359 } 4360 4361 @Override 4362 public void handleMessage(Message msg) { 4363 switch (msg.what) { 4364 case MSG_ENQUEUE_X_AXIS_KEY_REPEAT: 4365 case MSG_ENQUEUE_Y_AXIS_KEY_REPEAT: { 4366 KeyEvent oldEvent = (KeyEvent)msg.obj; 4367 KeyEvent e = KeyEvent.changeTimeRepeat(oldEvent, 4368 SystemClock.uptimeMillis(), 4369 oldEvent.getRepeatCount() + 1); 4370 if (mAttachInfo.mHasWindowFocus) { 4371 enqueueInputEvent(e); 4372 Message m = obtainMessage(msg.what, e); 4373 m.setAsynchronous(true); 4374 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatDelay()); 4375 } 4376 } break; 4377 } 4378 } 4379 4380 public void process(MotionEvent event) { 4381 switch(event.getActionMasked()) { 4382 case MotionEvent.ACTION_CANCEL: 4383 cancel(event); 4384 break; 4385 case MotionEvent.ACTION_MOVE: 4386 update(event, true); 4387 break; 4388 default: 4389 Log.w(TAG, "Unexpected action: " + event.getActionMasked()); 4390 } 4391 } 4392 4393 private void cancel(MotionEvent event) { 4394 removeMessages(MSG_ENQUEUE_X_AXIS_KEY_REPEAT); 4395 removeMessages(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT); 4396 update(event, false); 4397 } 4398 4399 private void update(MotionEvent event, boolean synthesizeNewKeys) { 4400 final long time = event.getEventTime(); 4401 final int metaState = event.getMetaState(); 4402 final int deviceId = event.getDeviceId(); 4403 final int source = event.getSource(); 4404 4405 int xDirection = joystickAxisValueToDirection( 4406 event.getAxisValue(MotionEvent.AXIS_HAT_X)); 4407 if (xDirection == 0) { 4408 xDirection = joystickAxisValueToDirection(event.getX()); 4409 } 4410 4411 int yDirection = joystickAxisValueToDirection( 4412 event.getAxisValue(MotionEvent.AXIS_HAT_Y)); 4413 if (yDirection == 0) { 4414 yDirection = joystickAxisValueToDirection(event.getY()); 4415 } 4416 4417 if (xDirection != mLastXDirection) { 4418 if (mLastXKeyCode != 0) { 4419 removeMessages(MSG_ENQUEUE_X_AXIS_KEY_REPEAT); 4420 enqueueInputEvent(new KeyEvent(time, time, 4421 KeyEvent.ACTION_UP, mLastXKeyCode, 0, metaState, 4422 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4423 mLastXKeyCode = 0; 4424 } 4425 4426 mLastXDirection = xDirection; 4427 4428 if (xDirection != 0 && synthesizeNewKeys) { 4429 mLastXKeyCode = xDirection > 0 4430 ? KeyEvent.KEYCODE_DPAD_RIGHT : KeyEvent.KEYCODE_DPAD_LEFT; 4431 final KeyEvent e = new KeyEvent(time, time, 4432 KeyEvent.ACTION_DOWN, mLastXKeyCode, 0, metaState, 4433 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4434 enqueueInputEvent(e); 4435 Message m = obtainMessage(MSG_ENQUEUE_X_AXIS_KEY_REPEAT, e); 4436 m.setAsynchronous(true); 4437 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4438 } 4439 } 4440 4441 if (yDirection != mLastYDirection) { 4442 if (mLastYKeyCode != 0) { 4443 removeMessages(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT); 4444 enqueueInputEvent(new KeyEvent(time, time, 4445 KeyEvent.ACTION_UP, mLastYKeyCode, 0, metaState, 4446 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4447 mLastYKeyCode = 0; 4448 } 4449 4450 mLastYDirection = yDirection; 4451 4452 if (yDirection != 0 && synthesizeNewKeys) { 4453 mLastYKeyCode = yDirection > 0 4454 ? KeyEvent.KEYCODE_DPAD_DOWN : KeyEvent.KEYCODE_DPAD_UP; 4455 final KeyEvent e = new KeyEvent(time, time, 4456 KeyEvent.ACTION_DOWN, mLastYKeyCode, 0, metaState, 4457 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4458 enqueueInputEvent(e); 4459 Message m = obtainMessage(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT, e); 4460 m.setAsynchronous(true); 4461 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4462 } 4463 } 4464 } 4465 4466 private int joystickAxisValueToDirection(float value) { 4467 if (value >= 0.5f) { 4468 return 1; 4469 } else if (value <= -0.5f) { 4470 return -1; 4471 } else { 4472 return 0; 4473 } 4474 } 4475 } 4476 4477 /** 4478 * Creates dpad events from unhandled touch navigation movements. 4479 */ 4480 final class SyntheticTouchNavigationHandler extends Handler { 4481 private static final String LOCAL_TAG = "SyntheticTouchNavigationHandler"; 4482 private static final boolean LOCAL_DEBUG = false; 4483 4484 // Assumed nominal width and height in millimeters of a touch navigation pad, 4485 // if no resolution information is available from the input system. 4486 private static final float DEFAULT_WIDTH_MILLIMETERS = 48; 4487 private static final float DEFAULT_HEIGHT_MILLIMETERS = 48; 4488 4489 /* TODO: These constants should eventually be moved to ViewConfiguration. */ 4490 4491 // The nominal distance traveled to move by one unit. 4492 private static final int TICK_DISTANCE_MILLIMETERS = 12; 4493 4494 // Minimum and maximum fling velocity in ticks per second. 4495 // The minimum velocity should be set such that we perform enough ticks per 4496 // second that the fling appears to be fluid. For example, if we set the minimum 4497 // to 2 ticks per second, then there may be up to half a second delay between the next 4498 // to last and last ticks which is noticeably discrete and jerky. This value should 4499 // probably not be set to anything less than about 4. 4500 // If fling accuracy is a problem then consider tuning the tick distance instead. 4501 private static final float MIN_FLING_VELOCITY_TICKS_PER_SECOND = 6f; 4502 private static final float MAX_FLING_VELOCITY_TICKS_PER_SECOND = 20f; 4503 4504 // Fling velocity decay factor applied after each new key is emitted. 4505 // This parameter controls the deceleration and overall duration of the fling. 4506 // The fling stops automatically when its velocity drops below the minimum 4507 // fling velocity defined above. 4508 private static final float FLING_TICK_DECAY = 0.8f; 4509 4510 /* The input device that we are tracking. */ 4511 4512 private int mCurrentDeviceId = -1; 4513 private int mCurrentSource; 4514 private boolean mCurrentDeviceSupported; 4515 4516 /* Configuration for the current input device. */ 4517 4518 // The scaled tick distance. A movement of this amount should generally translate 4519 // into a single dpad event in a given direction. 4520 private float mConfigTickDistance; 4521 4522 // The minimum and maximum scaled fling velocity. 4523 private float mConfigMinFlingVelocity; 4524 private float mConfigMaxFlingVelocity; 4525 4526 /* Tracking state. */ 4527 4528 // The velocity tracker for detecting flings. 4529 private VelocityTracker mVelocityTracker; 4530 4531 // The active pointer id, or -1 if none. 4532 private int mActivePointerId = -1; 4533 4534 // Time and location where tracking started. 4535 private long mStartTime; 4536 private float mStartX; 4537 private float mStartY; 4538 4539 // Most recently observed position. 4540 private float mLastX; 4541 private float mLastY; 4542 4543 // Accumulated movement delta since the last direction key was sent. 4544 private float mAccumulatedX; 4545 private float mAccumulatedY; 4546 4547 // Set to true if any movement was delivered to the app. 4548 // Implies that tap slop was exceeded. 4549 private boolean mConsumedMovement; 4550 4551 // The most recently sent key down event. 4552 // The keycode remains set until the direction changes or a fling ends 4553 // so that repeated key events may be generated as required. 4554 private long mPendingKeyDownTime; 4555 private int mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 4556 private int mPendingKeyRepeatCount; 4557 private int mPendingKeyMetaState; 4558 4559 // The current fling velocity while a fling is in progress. 4560 private boolean mFlinging; 4561 private float mFlingVelocity; 4562 4563 // The last time a confirm key was pressed on the touch nav device 4564 private long mLastConfirmKeyTime = Long.MAX_VALUE; 4565 4566 public SyntheticTouchNavigationHandler() { 4567 super(true); 4568 } 4569 4570 public void process(MotionEvent event) { 4571 // Update the current device information. 4572 final long time = event.getEventTime(); 4573 final int deviceId = event.getDeviceId(); 4574 final int source = event.getSource(); 4575 if (mCurrentDeviceId != deviceId || mCurrentSource != source) { 4576 finishKeys(time); 4577 finishTracking(time); 4578 mCurrentDeviceId = deviceId; 4579 mCurrentSource = source; 4580 mCurrentDeviceSupported = false; 4581 InputDevice device = event.getDevice(); 4582 if (device != null) { 4583 // In order to support an input device, we must know certain 4584 // characteristics about it, such as its size and resolution. 4585 InputDevice.MotionRange xRange = device.getMotionRange(MotionEvent.AXIS_X); 4586 InputDevice.MotionRange yRange = device.getMotionRange(MotionEvent.AXIS_Y); 4587 if (xRange != null && yRange != null) { 4588 mCurrentDeviceSupported = true; 4589 4590 // Infer the resolution if it not actually known. 4591 float xRes = xRange.getResolution(); 4592 if (xRes <= 0) { 4593 xRes = xRange.getRange() / DEFAULT_WIDTH_MILLIMETERS; 4594 } 4595 float yRes = yRange.getResolution(); 4596 if (yRes <= 0) { 4597 yRes = yRange.getRange() / DEFAULT_HEIGHT_MILLIMETERS; 4598 } 4599 float nominalRes = (xRes + yRes) * 0.5f; 4600 4601 // Precompute all of the configuration thresholds we will need. 4602 mConfigTickDistance = TICK_DISTANCE_MILLIMETERS * nominalRes; 4603 mConfigMinFlingVelocity = 4604 MIN_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 4605 mConfigMaxFlingVelocity = 4606 MAX_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 4607 4608 if (LOCAL_DEBUG) { 4609 Log.d(LOCAL_TAG, "Configured device " + mCurrentDeviceId 4610 + " (" + Integer.toHexString(mCurrentSource) + "): " 4611 + ", mConfigTickDistance=" + mConfigTickDistance 4612 + ", mConfigMinFlingVelocity=" + mConfigMinFlingVelocity 4613 + ", mConfigMaxFlingVelocity=" + mConfigMaxFlingVelocity); 4614 } 4615 } 4616 } 4617 } 4618 if (!mCurrentDeviceSupported) { 4619 return; 4620 } 4621 4622 // Handle the event. 4623 final int action = event.getActionMasked(); 4624 switch (action) { 4625 case MotionEvent.ACTION_DOWN: { 4626 boolean caughtFling = mFlinging; 4627 finishKeys(time); 4628 finishTracking(time); 4629 mActivePointerId = event.getPointerId(0); 4630 mVelocityTracker = VelocityTracker.obtain(); 4631 mVelocityTracker.addMovement(event); 4632 mStartTime = time; 4633 mStartX = event.getX(); 4634 mStartY = event.getY(); 4635 mLastX = mStartX; 4636 mLastY = mStartY; 4637 mAccumulatedX = 0; 4638 mAccumulatedY = 0; 4639 4640 // If we caught a fling, then pretend that the tap slop has already 4641 // been exceeded to suppress taps whose only purpose is to stop the fling. 4642 mConsumedMovement = caughtFling; 4643 break; 4644 } 4645 4646 case MotionEvent.ACTION_MOVE: 4647 case MotionEvent.ACTION_UP: { 4648 if (mActivePointerId < 0) { 4649 break; 4650 } 4651 final int index = event.findPointerIndex(mActivePointerId); 4652 if (index < 0) { 4653 finishKeys(time); 4654 finishTracking(time); 4655 break; 4656 } 4657 4658 mVelocityTracker.addMovement(event); 4659 final float x = event.getX(index); 4660 final float y = event.getY(index); 4661 mAccumulatedX += x - mLastX; 4662 mAccumulatedY += y - mLastY; 4663 mLastX = x; 4664 mLastY = y; 4665 4666 // Consume any accumulated movement so far. 4667 final int metaState = event.getMetaState(); 4668 consumeAccumulatedMovement(time, metaState); 4669 4670 // Detect taps and flings. 4671 if (action == MotionEvent.ACTION_UP) { 4672 if (mConsumedMovement && mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 4673 // It might be a fling. 4674 mVelocityTracker.computeCurrentVelocity(1000, mConfigMaxFlingVelocity); 4675 final float vx = mVelocityTracker.getXVelocity(mActivePointerId); 4676 final float vy = mVelocityTracker.getYVelocity(mActivePointerId); 4677 if (!startFling(time, vx, vy)) { 4678 finishKeys(time); 4679 } 4680 } 4681 finishTracking(time); 4682 } 4683 break; 4684 } 4685 4686 case MotionEvent.ACTION_CANCEL: { 4687 finishKeys(time); 4688 finishTracking(time); 4689 break; 4690 } 4691 } 4692 } 4693 4694 public void cancel(MotionEvent event) { 4695 if (mCurrentDeviceId == event.getDeviceId() 4696 && mCurrentSource == event.getSource()) { 4697 final long time = event.getEventTime(); 4698 finishKeys(time); 4699 finishTracking(time); 4700 } 4701 } 4702 4703 private void finishKeys(long time) { 4704 cancelFling(); 4705 sendKeyUp(time); 4706 } 4707 4708 private void finishTracking(long time) { 4709 if (mActivePointerId >= 0) { 4710 mActivePointerId = -1; 4711 mVelocityTracker.recycle(); 4712 mVelocityTracker = null; 4713 } 4714 } 4715 4716 private void consumeAccumulatedMovement(long time, int metaState) { 4717 final float absX = Math.abs(mAccumulatedX); 4718 final float absY = Math.abs(mAccumulatedY); 4719 if (absX >= absY) { 4720 if (absX >= mConfigTickDistance) { 4721 mAccumulatedX = consumeAccumulatedMovement(time, metaState, mAccumulatedX, 4722 KeyEvent.KEYCODE_DPAD_LEFT, KeyEvent.KEYCODE_DPAD_RIGHT); 4723 mAccumulatedY = 0; 4724 mConsumedMovement = true; 4725 } 4726 } else { 4727 if (absY >= mConfigTickDistance) { 4728 mAccumulatedY = consumeAccumulatedMovement(time, metaState, mAccumulatedY, 4729 KeyEvent.KEYCODE_DPAD_UP, KeyEvent.KEYCODE_DPAD_DOWN); 4730 mAccumulatedX = 0; 4731 mConsumedMovement = true; 4732 } 4733 } 4734 } 4735 4736 private float consumeAccumulatedMovement(long time, int metaState, 4737 float accumulator, int negativeKeyCode, int positiveKeyCode) { 4738 while (accumulator <= -mConfigTickDistance) { 4739 sendKeyDownOrRepeat(time, negativeKeyCode, metaState); 4740 accumulator += mConfigTickDistance; 4741 } 4742 while (accumulator >= mConfigTickDistance) { 4743 sendKeyDownOrRepeat(time, positiveKeyCode, metaState); 4744 accumulator -= mConfigTickDistance; 4745 } 4746 return accumulator; 4747 } 4748 4749 private void sendKeyDownOrRepeat(long time, int keyCode, int metaState) { 4750 if (mPendingKeyCode != keyCode) { 4751 sendKeyUp(time); 4752 mPendingKeyDownTime = time; 4753 mPendingKeyCode = keyCode; 4754 mPendingKeyRepeatCount = 0; 4755 } else { 4756 mPendingKeyRepeatCount += 1; 4757 } 4758 mPendingKeyMetaState = metaState; 4759 4760 // Note: Normally we would pass FLAG_LONG_PRESS when the repeat count is 1 4761 // but it doesn't quite make sense when simulating the events in this way. 4762 if (LOCAL_DEBUG) { 4763 Log.d(LOCAL_TAG, "Sending key down: keyCode=" + mPendingKeyCode 4764 + ", repeatCount=" + mPendingKeyRepeatCount 4765 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 4766 } 4767 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 4768 KeyEvent.ACTION_DOWN, mPendingKeyCode, mPendingKeyRepeatCount, 4769 mPendingKeyMetaState, mCurrentDeviceId, 4770 KeyEvent.FLAG_FALLBACK, mCurrentSource)); 4771 } 4772 4773 private void sendKeyUp(long time) { 4774 if (mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 4775 if (LOCAL_DEBUG) { 4776 Log.d(LOCAL_TAG, "Sending key up: keyCode=" + mPendingKeyCode 4777 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 4778 } 4779 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 4780 KeyEvent.ACTION_UP, mPendingKeyCode, 0, mPendingKeyMetaState, 4781 mCurrentDeviceId, 0, KeyEvent.FLAG_FALLBACK, 4782 mCurrentSource)); 4783 mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 4784 } 4785 } 4786 4787 private boolean startFling(long time, float vx, float vy) { 4788 if (LOCAL_DEBUG) { 4789 Log.d(LOCAL_TAG, "Considering fling: vx=" + vx + ", vy=" + vy 4790 + ", min=" + mConfigMinFlingVelocity); 4791 } 4792 4793 // Flings must be oriented in the same direction as the preceding movements. 4794 switch (mPendingKeyCode) { 4795 case KeyEvent.KEYCODE_DPAD_LEFT: 4796 if (-vx >= mConfigMinFlingVelocity 4797 && Math.abs(vy) < mConfigMinFlingVelocity) { 4798 mFlingVelocity = -vx; 4799 break; 4800 } 4801 return false; 4802 4803 case KeyEvent.KEYCODE_DPAD_RIGHT: 4804 if (vx >= mConfigMinFlingVelocity 4805 && Math.abs(vy) < mConfigMinFlingVelocity) { 4806 mFlingVelocity = vx; 4807 break; 4808 } 4809 return false; 4810 4811 case KeyEvent.KEYCODE_DPAD_UP: 4812 if (-vy >= mConfigMinFlingVelocity 4813 && Math.abs(vx) < mConfigMinFlingVelocity) { 4814 mFlingVelocity = -vy; 4815 break; 4816 } 4817 return false; 4818 4819 case KeyEvent.KEYCODE_DPAD_DOWN: 4820 if (vy >= mConfigMinFlingVelocity 4821 && Math.abs(vx) < mConfigMinFlingVelocity) { 4822 mFlingVelocity = vy; 4823 break; 4824 } 4825 return false; 4826 } 4827 4828 // Post the first fling event. 4829 mFlinging = postFling(time); 4830 return mFlinging; 4831 } 4832 4833 private boolean postFling(long time) { 4834 // The idea here is to estimate the time when the pointer would have 4835 // traveled one tick distance unit given the current fling velocity. 4836 // This effect creates continuity of motion. 4837 if (mFlingVelocity >= mConfigMinFlingVelocity) { 4838 long delay = (long)(mConfigTickDistance / mFlingVelocity * 1000); 4839 postAtTime(mFlingRunnable, time + delay); 4840 if (LOCAL_DEBUG) { 4841 Log.d(LOCAL_TAG, "Posted fling: velocity=" 4842 + mFlingVelocity + ", delay=" + delay 4843 + ", keyCode=" + mPendingKeyCode); 4844 } 4845 return true; 4846 } 4847 return false; 4848 } 4849 4850 private void cancelFling() { 4851 if (mFlinging) { 4852 removeCallbacks(mFlingRunnable); 4853 mFlinging = false; 4854 } 4855 } 4856 4857 private final Runnable mFlingRunnable = new Runnable() { 4858 @Override 4859 public void run() { 4860 final long time = SystemClock.uptimeMillis(); 4861 sendKeyDownOrRepeat(time, mPendingKeyCode, mPendingKeyMetaState); 4862 mFlingVelocity *= FLING_TICK_DECAY; 4863 if (!postFling(time)) { 4864 mFlinging = false; 4865 finishKeys(time); 4866 } 4867 } 4868 }; 4869 } 4870 4871 /** 4872 * Returns true if the key is used for keyboard navigation. 4873 * @param keyEvent The key event. 4874 * @return True if the key is used for keyboard navigation. 4875 */ 4876 private static boolean isNavigationKey(KeyEvent keyEvent) { 4877 switch (keyEvent.getKeyCode()) { 4878 case KeyEvent.KEYCODE_DPAD_LEFT: 4879 case KeyEvent.KEYCODE_DPAD_RIGHT: 4880 case KeyEvent.KEYCODE_DPAD_UP: 4881 case KeyEvent.KEYCODE_DPAD_DOWN: 4882 case KeyEvent.KEYCODE_DPAD_CENTER: 4883 case KeyEvent.KEYCODE_PAGE_UP: 4884 case KeyEvent.KEYCODE_PAGE_DOWN: 4885 case KeyEvent.KEYCODE_MOVE_HOME: 4886 case KeyEvent.KEYCODE_MOVE_END: 4887 case KeyEvent.KEYCODE_TAB: 4888 case KeyEvent.KEYCODE_SPACE: 4889 case KeyEvent.KEYCODE_ENTER: 4890 return true; 4891 } 4892 return false; 4893 } 4894 4895 /** 4896 * Returns true if the key is used for typing. 4897 * @param keyEvent The key event. 4898 * @return True if the key is used for typing. 4899 */ 4900 private static boolean isTypingKey(KeyEvent keyEvent) { 4901 return keyEvent.getUnicodeChar() > 0; 4902 } 4903 4904 /** 4905 * See if the key event means we should leave touch mode (and leave touch mode if so). 4906 * @param event The key event. 4907 * @return Whether this key event should be consumed (meaning the act of 4908 * leaving touch mode alone is considered the event). 4909 */ 4910 private boolean checkForLeavingTouchModeAndConsume(KeyEvent event) { 4911 // Only relevant in touch mode. 4912 if (!mAttachInfo.mInTouchMode) { 4913 return false; 4914 } 4915 4916 // Only consider leaving touch mode on DOWN or MULTIPLE actions, never on UP. 4917 final int action = event.getAction(); 4918 if (action != KeyEvent.ACTION_DOWN && action != KeyEvent.ACTION_MULTIPLE) { 4919 return false; 4920 } 4921 4922 // Don't leave touch mode if the IME told us not to. 4923 if ((event.getFlags() & KeyEvent.FLAG_KEEP_TOUCH_MODE) != 0) { 4924 return false; 4925 } 4926 4927 // If the key can be used for keyboard navigation then leave touch mode 4928 // and select a focused view if needed (in ensureTouchMode). 4929 // When a new focused view is selected, we consume the navigation key because 4930 // navigation doesn't make much sense unless a view already has focus so 4931 // the key's purpose is to set focus. 4932 if (isNavigationKey(event)) { 4933 return ensureTouchMode(false); 4934 } 4935 4936 // If the key can be used for typing then leave touch mode 4937 // and select a focused view if needed (in ensureTouchMode). 4938 // Always allow the view to process the typing key. 4939 if (isTypingKey(event)) { 4940 ensureTouchMode(false); 4941 return false; 4942 } 4943 4944 return false; 4945 } 4946 4947 /* drag/drop */ 4948 void setLocalDragState(Object obj) { 4949 mLocalDragState = obj; 4950 } 4951 4952 private void handleDragEvent(DragEvent event) { 4953 // From the root, only drag start/end/location are dispatched. entered/exited 4954 // are determined and dispatched by the viewgroup hierarchy, who then report 4955 // that back here for ultimate reporting back to the framework. 4956 if (mView != null && mAdded) { 4957 final int what = event.mAction; 4958 4959 if (what == DragEvent.ACTION_DRAG_EXITED) { 4960 // A direct EXITED event means that the window manager knows we've just crossed 4961 // a window boundary, so the current drag target within this one must have 4962 // just been exited. Send it the usual notifications and then we're done 4963 // for now. 4964 mView.dispatchDragEvent(event); 4965 } else { 4966 // Cache the drag description when the operation starts, then fill it in 4967 // on subsequent calls as a convenience 4968 if (what == DragEvent.ACTION_DRAG_STARTED) { 4969 mCurrentDragView = null; // Start the current-recipient tracking 4970 mDragDescription = event.mClipDescription; 4971 } else { 4972 event.mClipDescription = mDragDescription; 4973 } 4974 4975 // For events with a [screen] location, translate into window coordinates 4976 if ((what == DragEvent.ACTION_DRAG_LOCATION) || (what == DragEvent.ACTION_DROP)) { 4977 mDragPoint.set(event.mX, event.mY); 4978 if (mTranslator != null) { 4979 mTranslator.translatePointInScreenToAppWindow(mDragPoint); 4980 } 4981 4982 if (mCurScrollY != 0) { 4983 mDragPoint.offset(0, mCurScrollY); 4984 } 4985 4986 event.mX = mDragPoint.x; 4987 event.mY = mDragPoint.y; 4988 } 4989 4990 // Remember who the current drag target is pre-dispatch 4991 final View prevDragView = mCurrentDragView; 4992 4993 // Now dispatch the drag/drop event 4994 boolean result = mView.dispatchDragEvent(event); 4995 4996 // If we changed apparent drag target, tell the OS about it 4997 if (prevDragView != mCurrentDragView) { 4998 try { 4999 if (prevDragView != null) { 5000 mWindowSession.dragRecipientExited(mWindow); 5001 } 5002 if (mCurrentDragView != null) { 5003 mWindowSession.dragRecipientEntered(mWindow); 5004 } 5005 } catch (RemoteException e) { 5006 Slog.e(TAG, "Unable to note drag target change"); 5007 } 5008 } 5009 5010 // Report the drop result when we're done 5011 if (what == DragEvent.ACTION_DROP) { 5012 mDragDescription = null; 5013 try { 5014 Log.i(TAG, "Reporting drop result: " + result); 5015 mWindowSession.reportDropResult(mWindow, result); 5016 } catch (RemoteException e) { 5017 Log.e(TAG, "Unable to report drop result"); 5018 } 5019 } 5020 5021 // When the drag operation ends, release any local state object 5022 // that may have been in use 5023 if (what == DragEvent.ACTION_DRAG_ENDED) { 5024 setLocalDragState(null); 5025 } 5026 } 5027 } 5028 event.recycle(); 5029 } 5030 5031 public void handleDispatchSystemUiVisibilityChanged(SystemUiVisibilityInfo args) { 5032 if (mSeq != args.seq) { 5033 // The sequence has changed, so we need to update our value and make 5034 // sure to do a traversal afterward so the window manager is given our 5035 // most recent data. 5036 mSeq = args.seq; 5037 mAttachInfo.mForceReportNewAttributes = true; 5038 scheduleTraversals(); 5039 } 5040 if (mView == null) return; 5041 if (args.localChanges != 0) { 5042 mView.updateLocalSystemUiVisibility(args.localValue, args.localChanges); 5043 } 5044 if (mAttachInfo != null) { 5045 int visibility = args.globalVisibility&View.SYSTEM_UI_CLEARABLE_FLAGS; 5046 if (visibility != mAttachInfo.mGlobalSystemUiVisibility) { 5047 mAttachInfo.mGlobalSystemUiVisibility = visibility; 5048 mView.dispatchSystemUiVisibilityChanged(visibility); 5049 } 5050 } 5051 } 5052 5053 public void handleDispatchDoneAnimating() { 5054 if (mWindowsAnimating) { 5055 mWindowsAnimating = false; 5056 if (!mDirty.isEmpty() || mIsAnimating || mFullRedrawNeeded) { 5057 scheduleTraversals(); 5058 } 5059 } 5060 } 5061 5062 public void getLastTouchPoint(Point outLocation) { 5063 outLocation.x = (int) mLastTouchPoint.x; 5064 outLocation.y = (int) mLastTouchPoint.y; 5065 } 5066 5067 public void setDragFocus(View newDragTarget) { 5068 if (mCurrentDragView != newDragTarget) { 5069 mCurrentDragView = newDragTarget; 5070 } 5071 } 5072 5073 private AudioManager getAudioManager() { 5074 if (mView == null) { 5075 throw new IllegalStateException("getAudioManager called when there is no mView"); 5076 } 5077 if (mAudioManager == null) { 5078 mAudioManager = (AudioManager) mView.getContext().getSystemService(Context.AUDIO_SERVICE); 5079 } 5080 return mAudioManager; 5081 } 5082 5083 public AccessibilityInteractionController getAccessibilityInteractionController() { 5084 if (mView == null) { 5085 throw new IllegalStateException("getAccessibilityInteractionController" 5086 + " called when there is no mView"); 5087 } 5088 if (mAccessibilityInteractionController == null) { 5089 mAccessibilityInteractionController = new AccessibilityInteractionController(this); 5090 } 5091 return mAccessibilityInteractionController; 5092 } 5093 5094 private int relayoutWindow(WindowManager.LayoutParams params, int viewVisibility, 5095 boolean insetsPending) throws RemoteException { 5096 5097 float appScale = mAttachInfo.mApplicationScale; 5098 boolean restore = false; 5099 if (params != null && mTranslator != null) { 5100 restore = true; 5101 params.backup(); 5102 mTranslator.translateWindowLayout(params); 5103 } 5104 if (params != null) { 5105 if (DBG) Log.d(TAG, "WindowLayout in layoutWindow:" + params); 5106 } 5107 mPendingConfiguration.seq = 0; 5108 //Log.d(TAG, ">>>>>> CALLING relayout"); 5109 if (params != null && mOrigWindowType != params.type) { 5110 // For compatibility with old apps, don't crash here. 5111 if (mTargetSdkVersion < android.os.Build.VERSION_CODES.ICE_CREAM_SANDWICH) { 5112 Slog.w(TAG, "Window type can not be changed after " 5113 + "the window is added; ignoring change of " + mView); 5114 params.type = mOrigWindowType; 5115 } 5116 } 5117 int relayoutResult = mWindowSession.relayout( 5118 mWindow, mSeq, params, 5119 (int) (mView.getMeasuredWidth() * appScale + 0.5f), 5120 (int) (mView.getMeasuredHeight() * appScale + 0.5f), 5121 viewVisibility, insetsPending ? WindowManagerGlobal.RELAYOUT_INSETS_PENDING : 0, 5122 mWinFrame, mPendingOverscanInsets, mPendingContentInsets, mPendingVisibleInsets, 5123 mPendingConfiguration, mSurface); 5124 //Log.d(TAG, "<<<<<< BACK FROM relayout"); 5125 if (restore) { 5126 params.restore(); 5127 } 5128 5129 if (mTranslator != null) { 5130 mTranslator.translateRectInScreenToAppWinFrame(mWinFrame); 5131 mTranslator.translateRectInScreenToAppWindow(mPendingOverscanInsets); 5132 mTranslator.translateRectInScreenToAppWindow(mPendingContentInsets); 5133 mTranslator.translateRectInScreenToAppWindow(mPendingVisibleInsets); 5134 } 5135 return relayoutResult; 5136 } 5137 5138 /** 5139 * {@inheritDoc} 5140 */ 5141 @Override 5142 public void playSoundEffect(int effectId) { 5143 checkThread(); 5144 5145 if (mMediaDisabled) { 5146 return; 5147 } 5148 5149 try { 5150 final AudioManager audioManager = getAudioManager(); 5151 5152 switch (effectId) { 5153 case SoundEffectConstants.CLICK: 5154 audioManager.playSoundEffect(AudioManager.FX_KEY_CLICK); 5155 return; 5156 case SoundEffectConstants.NAVIGATION_DOWN: 5157 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_DOWN); 5158 return; 5159 case SoundEffectConstants.NAVIGATION_LEFT: 5160 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_LEFT); 5161 return; 5162 case SoundEffectConstants.NAVIGATION_RIGHT: 5163 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_RIGHT); 5164 return; 5165 case SoundEffectConstants.NAVIGATION_UP: 5166 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_UP); 5167 return; 5168 default: 5169 throw new IllegalArgumentException("unknown effect id " + effectId + 5170 " not defined in " + SoundEffectConstants.class.getCanonicalName()); 5171 } 5172 } catch (IllegalStateException e) { 5173 // Exception thrown by getAudioManager() when mView is null 5174 Log.e(TAG, "FATAL EXCEPTION when attempting to play sound effect: " + e); 5175 e.printStackTrace(); 5176 } 5177 } 5178 5179 /** 5180 * {@inheritDoc} 5181 */ 5182 @Override 5183 public boolean performHapticFeedback(int effectId, boolean always) { 5184 try { 5185 return mWindowSession.performHapticFeedback(mWindow, effectId, always); 5186 } catch (RemoteException e) { 5187 return false; 5188 } 5189 } 5190 5191 /** 5192 * {@inheritDoc} 5193 */ 5194 @Override 5195 public View focusSearch(View focused, int direction) { 5196 checkThread(); 5197 if (!(mView instanceof ViewGroup)) { 5198 return null; 5199 } 5200 return FocusFinder.getInstance().findNextFocus((ViewGroup) mView, focused, direction); 5201 } 5202 5203 public void debug() { 5204 mView.debug(); 5205 } 5206 5207 public void dump(String prefix, FileDescriptor fd, PrintWriter writer, String[] args) { 5208 String innerPrefix = prefix + " "; 5209 writer.print(prefix); writer.println("ViewRoot:"); 5210 writer.print(innerPrefix); writer.print("mAdded="); writer.print(mAdded); 5211 writer.print(" mRemoved="); writer.println(mRemoved); 5212 writer.print(innerPrefix); writer.print("mConsumeBatchedInputScheduled="); 5213 writer.println(mConsumeBatchedInputScheduled); 5214 writer.print(innerPrefix); writer.print("mPendingInputEventCount="); 5215 writer.println(mPendingInputEventCount); 5216 writer.print(innerPrefix); writer.print("mProcessInputEventsScheduled="); 5217 writer.println(mProcessInputEventsScheduled); 5218 writer.print(innerPrefix); writer.print("mTraversalScheduled="); 5219 writer.print(mTraversalScheduled); 5220 if (mTraversalScheduled) { 5221 writer.print(" (barrier="); writer.print(mTraversalBarrier); writer.println(")"); 5222 } else { 5223 writer.println(); 5224 } 5225 mFirstInputStage.dump(innerPrefix, writer); 5226 5227 mChoreographer.dump(prefix, writer); 5228 5229 writer.print(prefix); writer.println("View Hierarchy:"); 5230 dumpViewHierarchy(innerPrefix, writer, mView); 5231 } 5232 5233 private void dumpViewHierarchy(String prefix, PrintWriter writer, View view) { 5234 writer.print(prefix); 5235 if (view == null) { 5236 writer.println("null"); 5237 return; 5238 } 5239 writer.println(view.toString()); 5240 if (!(view instanceof ViewGroup)) { 5241 return; 5242 } 5243 ViewGroup grp = (ViewGroup)view; 5244 final int N = grp.getChildCount(); 5245 if (N <= 0) { 5246 return; 5247 } 5248 prefix = prefix + " "; 5249 for (int i=0; i<N; i++) { 5250 dumpViewHierarchy(prefix, writer, grp.getChildAt(i)); 5251 } 5252 } 5253 5254 public void dumpGfxInfo(int[] info) { 5255 info[0] = info[1] = 0; 5256 if (mView != null) { 5257 getGfxInfo(mView, info); 5258 } 5259 } 5260 5261 private static void getGfxInfo(View view, int[] info) { 5262 DisplayList displayList = view.mDisplayList; 5263 info[0]++; 5264 if (displayList != null) { 5265 info[1] += displayList.getSize(); 5266 } 5267 5268 if (view instanceof ViewGroup) { 5269 ViewGroup group = (ViewGroup) view; 5270 5271 int count = group.getChildCount(); 5272 for (int i = 0; i < count; i++) { 5273 getGfxInfo(group.getChildAt(i), info); 5274 } 5275 } 5276 } 5277 5278 /** 5279 * @param immediate True, do now if not in traversal. False, put on queue and do later. 5280 * @return True, request has been queued. False, request has been completed. 5281 */ 5282 boolean die(boolean immediate) { 5283 // Make sure we do execute immediately if we are in the middle of a traversal or the damage 5284 // done by dispatchDetachedFromWindow will cause havoc on return. 5285 if (immediate && !mIsInTraversal) { 5286 doDie(); 5287 return false; 5288 } 5289 5290 if (!mIsDrawing) { 5291 destroyHardwareRenderer(); 5292 } else { 5293 Log.e(TAG, "Attempting to destroy the window while drawing!\n" + 5294 " window=" + this + ", title=" + mWindowAttributes.getTitle()); 5295 } 5296 mHandler.sendEmptyMessage(MSG_DIE); 5297 return true; 5298 } 5299 5300 void doDie() { 5301 checkThread(); 5302 if (LOCAL_LOGV) Log.v(TAG, "DIE in " + this + " of " + mSurface); 5303 synchronized (this) { 5304 if (mRemoved) { 5305 return; 5306 } 5307 mRemoved = true; 5308 if (mAdded) { 5309 dispatchDetachedFromWindow(); 5310 } 5311 5312 if (mAdded && !mFirst) { 5313 invalidateDisplayLists(); 5314 destroyHardwareRenderer(); 5315 5316 if (mView != null) { 5317 int viewVisibility = mView.getVisibility(); 5318 boolean viewVisibilityChanged = mViewVisibility != viewVisibility; 5319 if (mWindowAttributesChanged || viewVisibilityChanged) { 5320 // If layout params have been changed, first give them 5321 // to the window manager to make sure it has the correct 5322 // animation info. 5323 try { 5324 if ((relayoutWindow(mWindowAttributes, viewVisibility, false) 5325 & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 5326 mWindowSession.finishDrawing(mWindow); 5327 } 5328 } catch (RemoteException e) { 5329 } 5330 } 5331 5332 mSurface.release(); 5333 } 5334 } 5335 5336 mAdded = false; 5337 } 5338 WindowManagerGlobal.getInstance().doRemoveView(this); 5339 } 5340 5341 public void requestUpdateConfiguration(Configuration config) { 5342 Message msg = mHandler.obtainMessage(MSG_UPDATE_CONFIGURATION, config); 5343 mHandler.sendMessage(msg); 5344 } 5345 5346 public void loadSystemProperties() { 5347 mHandler.post(new Runnable() { 5348 @Override 5349 public void run() { 5350 // Profiling 5351 mProfileRendering = SystemProperties.getBoolean(PROPERTY_PROFILE_RENDERING, false); 5352 profileRendering(mAttachInfo.mHasWindowFocus); 5353 5354 // Media (used by sound effects) 5355 mMediaDisabled = SystemProperties.getBoolean(PROPERTY_MEDIA_DISABLED, false); 5356 5357 // Hardware rendering 5358 if (mAttachInfo.mHardwareRenderer != null) { 5359 if (mAttachInfo.mHardwareRenderer.loadSystemProperties(mHolder.getSurface())) { 5360 invalidate(); 5361 } 5362 } 5363 5364 // Layout debugging 5365 boolean layout = SystemProperties.getBoolean(View.DEBUG_LAYOUT_PROPERTY, false); 5366 if (layout != mAttachInfo.mDebugLayout) { 5367 mAttachInfo.mDebugLayout = layout; 5368 if (!mHandler.hasMessages(MSG_INVALIDATE_WORLD)) { 5369 mHandler.sendEmptyMessageDelayed(MSG_INVALIDATE_WORLD, 200); 5370 } 5371 } 5372 } 5373 }); 5374 } 5375 5376 private void destroyHardwareRenderer() { 5377 AttachInfo attachInfo = mAttachInfo; 5378 HardwareRenderer hardwareRenderer = attachInfo.mHardwareRenderer; 5379 5380 if (hardwareRenderer != null) { 5381 if (mView != null) { 5382 hardwareRenderer.destroyHardwareResources(mView); 5383 } 5384 hardwareRenderer.destroy(true); 5385 hardwareRenderer.setRequested(false); 5386 5387 attachInfo.mHardwareRenderer = null; 5388 attachInfo.mHardwareAccelerated = false; 5389 } 5390 } 5391 5392 public void dispatchFinishInputConnection(InputConnection connection) { 5393 Message msg = mHandler.obtainMessage(MSG_FINISH_INPUT_CONNECTION, connection); 5394 mHandler.sendMessage(msg); 5395 } 5396 5397 public void dispatchResized(Rect frame, Rect overscanInsets, Rect contentInsets, 5398 Rect visibleInsets, boolean reportDraw, Configuration newConfig) { 5399 if (DEBUG_LAYOUT) Log.v(TAG, "Resizing " + this + ": frame=" + frame.toShortString() 5400 + " contentInsets=" + contentInsets.toShortString() 5401 + " visibleInsets=" + visibleInsets.toShortString() 5402 + " reportDraw=" + reportDraw); 5403 Message msg = mHandler.obtainMessage(reportDraw ? MSG_RESIZED_REPORT : MSG_RESIZED); 5404 if (mTranslator != null) { 5405 mTranslator.translateRectInScreenToAppWindow(frame); 5406 mTranslator.translateRectInScreenToAppWindow(overscanInsets); 5407 mTranslator.translateRectInScreenToAppWindow(contentInsets); 5408 mTranslator.translateRectInScreenToAppWindow(visibleInsets); 5409 } 5410 SomeArgs args = SomeArgs.obtain(); 5411 final boolean sameProcessCall = (Binder.getCallingPid() == android.os.Process.myPid()); 5412 args.arg1 = sameProcessCall ? new Rect(frame) : frame; 5413 args.arg2 = sameProcessCall ? new Rect(contentInsets) : contentInsets; 5414 args.arg3 = sameProcessCall ? new Rect(visibleInsets) : visibleInsets; 5415 args.arg4 = sameProcessCall && newConfig != null ? new Configuration(newConfig) : newConfig; 5416 args.arg5 = sameProcessCall ? new Rect(overscanInsets) : overscanInsets; 5417 msg.obj = args; 5418 mHandler.sendMessage(msg); 5419 } 5420 5421 public void dispatchMoved(int newX, int newY) { 5422 if (DEBUG_LAYOUT) Log.v(TAG, "Window moved " + this + ": newX=" + newX + " newY=" + newY); 5423 if (mTranslator != null) { 5424 PointF point = new PointF(newX, newY); 5425 mTranslator.translatePointInScreenToAppWindow(point); 5426 newX = (int) (point.x + 0.5); 5427 newY = (int) (point.y + 0.5); 5428 } 5429 Message msg = mHandler.obtainMessage(MSG_WINDOW_MOVED, newX, newY); 5430 mHandler.sendMessage(msg); 5431 } 5432 5433 /** 5434 * Represents a pending input event that is waiting in a queue. 5435 * 5436 * Input events are processed in serial order by the timestamp specified by 5437 * {@link InputEvent#getEventTimeNano()}. In general, the input dispatcher delivers 5438 * one input event to the application at a time and waits for the application 5439 * to finish handling it before delivering the next one. 5440 * 5441 * However, because the application or IME can synthesize and inject multiple 5442 * key events at a time without going through the input dispatcher, we end up 5443 * needing a queue on the application's side. 5444 */ 5445 private static final class QueuedInputEvent { 5446 public static final int FLAG_DELIVER_POST_IME = 1 << 0; 5447 public static final int FLAG_DEFERRED = 1 << 1; 5448 public static final int FLAG_FINISHED = 1 << 2; 5449 public static final int FLAG_FINISHED_HANDLED = 1 << 3; 5450 public static final int FLAG_RESYNTHESIZED = 1 << 4; 5451 5452 public QueuedInputEvent mNext; 5453 5454 public InputEvent mEvent; 5455 public InputEventReceiver mReceiver; 5456 public int mFlags; 5457 5458 public boolean shouldSkipIme() { 5459 if ((mFlags & FLAG_DELIVER_POST_IME) != 0) { 5460 return true; 5461 } 5462 return mEvent instanceof MotionEvent 5463 && mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER); 5464 } 5465 } 5466 5467 private QueuedInputEvent obtainQueuedInputEvent(InputEvent event, 5468 InputEventReceiver receiver, int flags) { 5469 QueuedInputEvent q = mQueuedInputEventPool; 5470 if (q != null) { 5471 mQueuedInputEventPoolSize -= 1; 5472 mQueuedInputEventPool = q.mNext; 5473 q.mNext = null; 5474 } else { 5475 q = new QueuedInputEvent(); 5476 } 5477 5478 q.mEvent = event; 5479 q.mReceiver = receiver; 5480 q.mFlags = flags; 5481 return q; 5482 } 5483 5484 private void recycleQueuedInputEvent(QueuedInputEvent q) { 5485 q.mEvent = null; 5486 q.mReceiver = null; 5487 5488 if (mQueuedInputEventPoolSize < MAX_QUEUED_INPUT_EVENT_POOL_SIZE) { 5489 mQueuedInputEventPoolSize += 1; 5490 q.mNext = mQueuedInputEventPool; 5491 mQueuedInputEventPool = q; 5492 } 5493 } 5494 5495 void enqueueInputEvent(InputEvent event) { 5496 enqueueInputEvent(event, null, 0, false); 5497 } 5498 5499 void enqueueInputEvent(InputEvent event, 5500 InputEventReceiver receiver, int flags, boolean processImmediately) { 5501 QueuedInputEvent q = obtainQueuedInputEvent(event, receiver, flags); 5502 5503 // Always enqueue the input event in order, regardless of its time stamp. 5504 // We do this because the application or the IME may inject key events 5505 // in response to touch events and we want to ensure that the injected keys 5506 // are processed in the order they were received and we cannot trust that 5507 // the time stamp of injected events are monotonic. 5508 QueuedInputEvent last = mPendingInputEventTail; 5509 if (last == null) { 5510 mPendingInputEventHead = q; 5511 mPendingInputEventTail = q; 5512 } else { 5513 last.mNext = q; 5514 mPendingInputEventTail = q; 5515 } 5516 mPendingInputEventCount += 1; 5517 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 5518 mPendingInputEventCount); 5519 5520 if (processImmediately) { 5521 doProcessInputEvents(); 5522 } else { 5523 scheduleProcessInputEvents(); 5524 } 5525 } 5526 5527 private void scheduleProcessInputEvents() { 5528 if (!mProcessInputEventsScheduled) { 5529 mProcessInputEventsScheduled = true; 5530 Message msg = mHandler.obtainMessage(MSG_PROCESS_INPUT_EVENTS); 5531 msg.setAsynchronous(true); 5532 mHandler.sendMessage(msg); 5533 } 5534 } 5535 5536 void doProcessInputEvents() { 5537 // Deliver all pending input events in the queue. 5538 while (mPendingInputEventHead != null) { 5539 QueuedInputEvent q = mPendingInputEventHead; 5540 mPendingInputEventHead = q.mNext; 5541 if (mPendingInputEventHead == null) { 5542 mPendingInputEventTail = null; 5543 } 5544 q.mNext = null; 5545 5546 mPendingInputEventCount -= 1; 5547 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 5548 mPendingInputEventCount); 5549 5550 deliverInputEvent(q); 5551 } 5552 5553 // We are done processing all input events that we can process right now 5554 // so we can clear the pending flag immediately. 5555 if (mProcessInputEventsScheduled) { 5556 mProcessInputEventsScheduled = false; 5557 mHandler.removeMessages(MSG_PROCESS_INPUT_EVENTS); 5558 } 5559 } 5560 5561 private void deliverInputEvent(QueuedInputEvent q) { 5562 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "deliverInputEvent"); 5563 try { 5564 if (mInputEventConsistencyVerifier != null) { 5565 mInputEventConsistencyVerifier.onInputEvent(q.mEvent, 0); 5566 } 5567 5568 InputStage stage = q.shouldSkipIme() ? mFirstPostImeInputStage : mFirstInputStage; 5569 if (stage != null) { 5570 stage.deliver(q); 5571 } else { 5572 finishInputEvent(q); 5573 } 5574 } finally { 5575 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 5576 } 5577 } 5578 5579 private void finishInputEvent(QueuedInputEvent q) { 5580 if (q.mReceiver != null) { 5581 boolean handled = (q.mFlags & QueuedInputEvent.FLAG_FINISHED_HANDLED) != 0; 5582 q.mReceiver.finishInputEvent(q.mEvent, handled); 5583 } else { 5584 q.mEvent.recycleIfNeededAfterDispatch(); 5585 } 5586 5587 recycleQueuedInputEvent(q); 5588 } 5589 5590 static boolean isTerminalInputEvent(InputEvent event) { 5591 if (event instanceof KeyEvent) { 5592 final KeyEvent keyEvent = (KeyEvent)event; 5593 return keyEvent.getAction() == KeyEvent.ACTION_UP; 5594 } else { 5595 final MotionEvent motionEvent = (MotionEvent)event; 5596 final int action = motionEvent.getAction(); 5597 return action == MotionEvent.ACTION_UP 5598 || action == MotionEvent.ACTION_CANCEL 5599 || action == MotionEvent.ACTION_HOVER_EXIT; 5600 } 5601 } 5602 5603 void scheduleConsumeBatchedInput() { 5604 if (!mConsumeBatchedInputScheduled) { 5605 mConsumeBatchedInputScheduled = true; 5606 mChoreographer.postCallback(Choreographer.CALLBACK_INPUT, 5607 mConsumedBatchedInputRunnable, null); 5608 } 5609 } 5610 5611 void unscheduleConsumeBatchedInput() { 5612 if (mConsumeBatchedInputScheduled) { 5613 mConsumeBatchedInputScheduled = false; 5614 mChoreographer.removeCallbacks(Choreographer.CALLBACK_INPUT, 5615 mConsumedBatchedInputRunnable, null); 5616 } 5617 } 5618 5619 void doConsumeBatchedInput(long frameTimeNanos) { 5620 if (mConsumeBatchedInputScheduled) { 5621 mConsumeBatchedInputScheduled = false; 5622 if (mInputEventReceiver != null) { 5623 if (mInputEventReceiver.consumeBatchedInputEvents(frameTimeNanos)) { 5624 // If we consumed a batch here, we want to go ahead and schedule the 5625 // consumption of batched input events on the next frame. Otherwise, we would 5626 // wait until we have more input events pending and might get starved by other 5627 // things occurring in the process. 5628 scheduleConsumeBatchedInput(); 5629 } 5630 } 5631 doProcessInputEvents(); 5632 } 5633 } 5634 5635 final class TraversalRunnable implements Runnable { 5636 @Override 5637 public void run() { 5638 doTraversal(); 5639 } 5640 } 5641 final TraversalRunnable mTraversalRunnable = new TraversalRunnable(); 5642 5643 final class WindowInputEventReceiver extends InputEventReceiver { 5644 public WindowInputEventReceiver(InputChannel inputChannel, Looper looper) { 5645 super(inputChannel, looper); 5646 } 5647 5648 @Override 5649 public void onInputEvent(InputEvent event) { 5650 enqueueInputEvent(event, this, 0, true); 5651 } 5652 5653 @Override 5654 public void onBatchedInputEventPending() { 5655 scheduleConsumeBatchedInput(); 5656 } 5657 5658 @Override 5659 public void dispose() { 5660 unscheduleConsumeBatchedInput(); 5661 super.dispose(); 5662 } 5663 } 5664 WindowInputEventReceiver mInputEventReceiver; 5665 5666 final class ConsumeBatchedInputRunnable implements Runnable { 5667 @Override 5668 public void run() { 5669 doConsumeBatchedInput(mChoreographer.getFrameTimeNanos()); 5670 } 5671 } 5672 final ConsumeBatchedInputRunnable mConsumedBatchedInputRunnable = 5673 new ConsumeBatchedInputRunnable(); 5674 boolean mConsumeBatchedInputScheduled; 5675 5676 final class InvalidateOnAnimationRunnable implements Runnable { 5677 private boolean mPosted; 5678 private final ArrayList<View> mViews = new ArrayList<View>(); 5679 private final ArrayList<AttachInfo.InvalidateInfo> mViewRects = 5680 new ArrayList<AttachInfo.InvalidateInfo>(); 5681 private View[] mTempViews; 5682 private AttachInfo.InvalidateInfo[] mTempViewRects; 5683 5684 public void addView(View view) { 5685 synchronized (this) { 5686 mViews.add(view); 5687 postIfNeededLocked(); 5688 } 5689 } 5690 5691 public void addViewRect(AttachInfo.InvalidateInfo info) { 5692 synchronized (this) { 5693 mViewRects.add(info); 5694 postIfNeededLocked(); 5695 } 5696 } 5697 5698 public void removeView(View view) { 5699 synchronized (this) { 5700 mViews.remove(view); 5701 5702 for (int i = mViewRects.size(); i-- > 0; ) { 5703 AttachInfo.InvalidateInfo info = mViewRects.get(i); 5704 if (info.target == view) { 5705 mViewRects.remove(i); 5706 info.recycle(); 5707 } 5708 } 5709 5710 if (mPosted && mViews.isEmpty() && mViewRects.isEmpty()) { 5711 mChoreographer.removeCallbacks(Choreographer.CALLBACK_ANIMATION, this, null); 5712 mPosted = false; 5713 } 5714 } 5715 } 5716 5717 @Override 5718 public void run() { 5719 final int viewCount; 5720 final int viewRectCount; 5721 synchronized (this) { 5722 mPosted = false; 5723 5724 viewCount = mViews.size(); 5725 if (viewCount != 0) { 5726 mTempViews = mViews.toArray(mTempViews != null 5727 ? mTempViews : new View[viewCount]); 5728 mViews.clear(); 5729 } 5730 5731 viewRectCount = mViewRects.size(); 5732 if (viewRectCount != 0) { 5733 mTempViewRects = mViewRects.toArray(mTempViewRects != null 5734 ? mTempViewRects : new AttachInfo.InvalidateInfo[viewRectCount]); 5735 mViewRects.clear(); 5736 } 5737 } 5738 5739 for (int i = 0; i < viewCount; i++) { 5740 mTempViews[i].invalidate(); 5741 mTempViews[i] = null; 5742 } 5743 5744 for (int i = 0; i < viewRectCount; i++) { 5745 final View.AttachInfo.InvalidateInfo info = mTempViewRects[i]; 5746 info.target.invalidate(info.left, info.top, info.right, info.bottom); 5747 info.recycle(); 5748 } 5749 } 5750 5751 private void postIfNeededLocked() { 5752 if (!mPosted) { 5753 mChoreographer.postCallback(Choreographer.CALLBACK_ANIMATION, this, null); 5754 mPosted = true; 5755 } 5756 } 5757 } 5758 final InvalidateOnAnimationRunnable mInvalidateOnAnimationRunnable = 5759 new InvalidateOnAnimationRunnable(); 5760 5761 public void dispatchInvalidateDelayed(View view, long delayMilliseconds) { 5762 Message msg = mHandler.obtainMessage(MSG_INVALIDATE, view); 5763 mHandler.sendMessageDelayed(msg, delayMilliseconds); 5764 } 5765 5766 public void dispatchInvalidateRectDelayed(AttachInfo.InvalidateInfo info, 5767 long delayMilliseconds) { 5768 final Message msg = mHandler.obtainMessage(MSG_INVALIDATE_RECT, info); 5769 mHandler.sendMessageDelayed(msg, delayMilliseconds); 5770 } 5771 5772 public void dispatchInvalidateOnAnimation(View view) { 5773 mInvalidateOnAnimationRunnable.addView(view); 5774 } 5775 5776 public void dispatchInvalidateRectOnAnimation(AttachInfo.InvalidateInfo info) { 5777 mInvalidateOnAnimationRunnable.addViewRect(info); 5778 } 5779 5780 public void enqueueDisplayList(DisplayList displayList) { 5781 mDisplayLists.add(displayList); 5782 } 5783 5784 public void cancelInvalidate(View view) { 5785 mHandler.removeMessages(MSG_INVALIDATE, view); 5786 // fixme: might leak the AttachInfo.InvalidateInfo objects instead of returning 5787 // them to the pool 5788 mHandler.removeMessages(MSG_INVALIDATE_RECT, view); 5789 mInvalidateOnAnimationRunnable.removeView(view); 5790 } 5791 5792 public void dispatchInputEvent(InputEvent event) { 5793 Message msg = mHandler.obtainMessage(MSG_DISPATCH_INPUT_EVENT, event); 5794 msg.setAsynchronous(true); 5795 mHandler.sendMessage(msg); 5796 } 5797 5798 public void dispatchKeyFromIme(KeyEvent event) { 5799 Message msg = mHandler.obtainMessage(MSG_DISPATCH_KEY_FROM_IME, event); 5800 msg.setAsynchronous(true); 5801 mHandler.sendMessage(msg); 5802 } 5803 5804 public void dispatchUnhandledKey(KeyEvent event) { 5805 if ((event.getFlags() & KeyEvent.FLAG_FALLBACK) == 0) { 5806 final KeyCharacterMap kcm = event.getKeyCharacterMap(); 5807 final int keyCode = event.getKeyCode(); 5808 final int metaState = event.getMetaState(); 5809 5810 // Check for fallback actions specified by the key character map. 5811 KeyCharacterMap.FallbackAction fallbackAction = 5812 kcm.getFallbackAction(keyCode, metaState); 5813 if (fallbackAction != null) { 5814 final int flags = event.getFlags() | KeyEvent.FLAG_FALLBACK; 5815 KeyEvent fallbackEvent = KeyEvent.obtain( 5816 event.getDownTime(), event.getEventTime(), 5817 event.getAction(), fallbackAction.keyCode, 5818 event.getRepeatCount(), fallbackAction.metaState, 5819 event.getDeviceId(), event.getScanCode(), 5820 flags, event.getSource(), null); 5821 fallbackAction.recycle(); 5822 5823 dispatchInputEvent(fallbackEvent); 5824 } 5825 } 5826 } 5827 5828 public void dispatchAppVisibility(boolean visible) { 5829 Message msg = mHandler.obtainMessage(MSG_DISPATCH_APP_VISIBILITY); 5830 msg.arg1 = visible ? 1 : 0; 5831 mHandler.sendMessage(msg); 5832 } 5833 5834 public void dispatchGetNewSurface() { 5835 Message msg = mHandler.obtainMessage(MSG_DISPATCH_GET_NEW_SURFACE); 5836 mHandler.sendMessage(msg); 5837 } 5838 5839 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 5840 Message msg = Message.obtain(); 5841 msg.what = MSG_WINDOW_FOCUS_CHANGED; 5842 msg.arg1 = hasFocus ? 1 : 0; 5843 msg.arg2 = inTouchMode ? 1 : 0; 5844 mHandler.sendMessage(msg); 5845 } 5846 5847 public void dispatchCloseSystemDialogs(String reason) { 5848 Message msg = Message.obtain(); 5849 msg.what = MSG_CLOSE_SYSTEM_DIALOGS; 5850 msg.obj = reason; 5851 mHandler.sendMessage(msg); 5852 } 5853 5854 public void dispatchDragEvent(DragEvent event) { 5855 final int what; 5856 if (event.getAction() == DragEvent.ACTION_DRAG_LOCATION) { 5857 what = MSG_DISPATCH_DRAG_LOCATION_EVENT; 5858 mHandler.removeMessages(what); 5859 } else { 5860 what = MSG_DISPATCH_DRAG_EVENT; 5861 } 5862 Message msg = mHandler.obtainMessage(what, event); 5863 mHandler.sendMessage(msg); 5864 } 5865 5866 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 5867 int localValue, int localChanges) { 5868 SystemUiVisibilityInfo args = new SystemUiVisibilityInfo(); 5869 args.seq = seq; 5870 args.globalVisibility = globalVisibility; 5871 args.localValue = localValue; 5872 args.localChanges = localChanges; 5873 mHandler.sendMessage(mHandler.obtainMessage(MSG_DISPATCH_SYSTEM_UI_VISIBILITY, args)); 5874 } 5875 5876 public void dispatchDoneAnimating() { 5877 mHandler.sendEmptyMessage(MSG_DISPATCH_DONE_ANIMATING); 5878 } 5879 5880 public void dispatchCheckFocus() { 5881 if (!mHandler.hasMessages(MSG_CHECK_FOCUS)) { 5882 // This will result in a call to checkFocus() below. 5883 mHandler.sendEmptyMessage(MSG_CHECK_FOCUS); 5884 } 5885 } 5886 5887 /** 5888 * Post a callback to send a 5889 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 5890 * This event is send at most once every 5891 * {@link ViewConfiguration#getSendRecurringAccessibilityEventsInterval()}. 5892 */ 5893 private void postSendWindowContentChangedCallback(View source, int changeType) { 5894 if (mSendWindowContentChangedAccessibilityEvent == null) { 5895 mSendWindowContentChangedAccessibilityEvent = 5896 new SendWindowContentChangedAccessibilityEvent(); 5897 } 5898 mSendWindowContentChangedAccessibilityEvent.runOrPost(source, changeType); 5899 } 5900 5901 /** 5902 * Remove a posted callback to send a 5903 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 5904 */ 5905 private void removeSendWindowContentChangedCallback() { 5906 if (mSendWindowContentChangedAccessibilityEvent != null) { 5907 mHandler.removeCallbacks(mSendWindowContentChangedAccessibilityEvent); 5908 } 5909 } 5910 5911 @Override 5912 public boolean showContextMenuForChild(View originalView) { 5913 return false; 5914 } 5915 5916 @Override 5917 public ActionMode startActionModeForChild(View originalView, ActionMode.Callback callback) { 5918 return null; 5919 } 5920 5921 @Override 5922 public void createContextMenu(ContextMenu menu) { 5923 } 5924 5925 @Override 5926 public void childDrawableStateChanged(View child) { 5927 } 5928 5929 @Override 5930 public boolean requestSendAccessibilityEvent(View child, AccessibilityEvent event) { 5931 if (mView == null) { 5932 return false; 5933 } 5934 // Intercept accessibility focus events fired by virtual nodes to keep 5935 // track of accessibility focus position in such nodes. 5936 final int eventType = event.getEventType(); 5937 switch (eventType) { 5938 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUSED: { 5939 final long sourceNodeId = event.getSourceNodeId(); 5940 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 5941 sourceNodeId); 5942 View source = mView.findViewByAccessibilityId(accessibilityViewId); 5943 if (source != null) { 5944 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 5945 if (provider != null) { 5946 AccessibilityNodeInfo node = provider.createAccessibilityNodeInfo( 5947 AccessibilityNodeInfo.getVirtualDescendantId(sourceNodeId)); 5948 setAccessibilityFocus(source, node); 5949 } 5950 } 5951 } break; 5952 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUS_CLEARED: { 5953 final long sourceNodeId = event.getSourceNodeId(); 5954 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 5955 sourceNodeId); 5956 View source = mView.findViewByAccessibilityId(accessibilityViewId); 5957 if (source != null) { 5958 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 5959 if (provider != null) { 5960 setAccessibilityFocus(null, null); 5961 } 5962 } 5963 } break; 5964 } 5965 mAccessibilityManager.sendAccessibilityEvent(event); 5966 return true; 5967 } 5968 5969 @Override 5970 public void notifySubtreeAccessibilityStateChanged(View child, View source, int changeType) { 5971 postSendWindowContentChangedCallback(source, changeType); 5972 } 5973 5974 @Override 5975 public boolean canResolveLayoutDirection() { 5976 return true; 5977 } 5978 5979 @Override 5980 public boolean isLayoutDirectionResolved() { 5981 return true; 5982 } 5983 5984 @Override 5985 public int getLayoutDirection() { 5986 return View.LAYOUT_DIRECTION_RESOLVED_DEFAULT; 5987 } 5988 5989 @Override 5990 public boolean canResolveTextDirection() { 5991 return true; 5992 } 5993 5994 @Override 5995 public boolean isTextDirectionResolved() { 5996 return true; 5997 } 5998 5999 @Override 6000 public int getTextDirection() { 6001 return View.TEXT_DIRECTION_RESOLVED_DEFAULT; 6002 } 6003 6004 @Override 6005 public boolean canResolveTextAlignment() { 6006 return true; 6007 } 6008 6009 @Override 6010 public boolean isTextAlignmentResolved() { 6011 return true; 6012 } 6013 6014 @Override 6015 public int getTextAlignment() { 6016 return View.TEXT_ALIGNMENT_RESOLVED_DEFAULT; 6017 } 6018 6019 private View getCommonPredecessor(View first, View second) { 6020 if (mAttachInfo != null) { 6021 if (mTempHashSet == null) { 6022 mTempHashSet = new HashSet<View>(); 6023 } 6024 HashSet<View> seen = mTempHashSet; 6025 seen.clear(); 6026 View firstCurrent = first; 6027 while (firstCurrent != null) { 6028 seen.add(firstCurrent); 6029 ViewParent firstCurrentParent = firstCurrent.mParent; 6030 if (firstCurrentParent instanceof View) { 6031 firstCurrent = (View) firstCurrentParent; 6032 } else { 6033 firstCurrent = null; 6034 } 6035 } 6036 View secondCurrent = second; 6037 while (secondCurrent != null) { 6038 if (seen.contains(secondCurrent)) { 6039 seen.clear(); 6040 return secondCurrent; 6041 } 6042 ViewParent secondCurrentParent = secondCurrent.mParent; 6043 if (secondCurrentParent instanceof View) { 6044 secondCurrent = (View) secondCurrentParent; 6045 } else { 6046 secondCurrent = null; 6047 } 6048 } 6049 seen.clear(); 6050 } 6051 return null; 6052 } 6053 6054 void checkThread() { 6055 if (mThread != Thread.currentThread()) { 6056 throw new CalledFromWrongThreadException( 6057 "Only the original thread that created a view hierarchy can touch its views."); 6058 } 6059 } 6060 6061 @Override 6062 public void requestDisallowInterceptTouchEvent(boolean disallowIntercept) { 6063 // ViewAncestor never intercepts touch event, so this can be a no-op 6064 } 6065 6066 @Override 6067 public boolean requestChildRectangleOnScreen(View child, Rect rectangle, boolean immediate) { 6068 final boolean scrolled = scrollToRectOrFocus(rectangle, immediate); 6069 if (rectangle != null) { 6070 mTempRect.set(rectangle); 6071 mTempRect.offset(0, -mCurScrollY); 6072 mTempRect.offset(mAttachInfo.mWindowLeft, mAttachInfo.mWindowTop); 6073 try { 6074 mWindowSession.onRectangleOnScreenRequested(mWindow, mTempRect, immediate); 6075 } catch (RemoteException re) { 6076 /* ignore */ 6077 } 6078 } 6079 return scrolled; 6080 } 6081 6082 @Override 6083 public void childHasTransientStateChanged(View child, boolean hasTransientState) { 6084 // Do nothing. 6085 } 6086 6087 void changeCanvasOpacity(boolean opaque) { 6088 // TODO(romainguy): recreate Canvas (software or hardware) to reflect the opacity change. 6089 Log.d(TAG, "changeCanvasOpacity: opaque=" + opaque); 6090 } 6091 6092 class TakenSurfaceHolder extends BaseSurfaceHolder { 6093 @Override 6094 public boolean onAllowLockCanvas() { 6095 return mDrawingAllowed; 6096 } 6097 6098 @Override 6099 public void onRelayoutContainer() { 6100 // Not currently interesting -- from changing between fixed and layout size. 6101 } 6102 6103 @Override 6104 public void setFormat(int format) { 6105 ((RootViewSurfaceTaker)mView).setSurfaceFormat(format); 6106 } 6107 6108 @Override 6109 public void setType(int type) { 6110 ((RootViewSurfaceTaker)mView).setSurfaceType(type); 6111 } 6112 6113 @Override 6114 public void onUpdateSurface() { 6115 // We take care of format and type changes on our own. 6116 throw new IllegalStateException("Shouldn't be here"); 6117 } 6118 6119 @Override 6120 public boolean isCreating() { 6121 return mIsCreating; 6122 } 6123 6124 @Override 6125 public void setFixedSize(int width, int height) { 6126 throw new UnsupportedOperationException( 6127 "Currently only support sizing from layout"); 6128 } 6129 6130 @Override 6131 public void setKeepScreenOn(boolean screenOn) { 6132 ((RootViewSurfaceTaker)mView).setSurfaceKeepScreenOn(screenOn); 6133 } 6134 } 6135 6136 static class W extends IWindow.Stub { 6137 private final WeakReference<ViewRootImpl> mViewAncestor; 6138 private final IWindowSession mWindowSession; 6139 6140 W(ViewRootImpl viewAncestor) { 6141 mViewAncestor = new WeakReference<ViewRootImpl>(viewAncestor); 6142 mWindowSession = viewAncestor.mWindowSession; 6143 } 6144 6145 @Override 6146 public void resized(Rect frame, Rect overscanInsets, Rect contentInsets, 6147 Rect visibleInsets, boolean reportDraw, Configuration newConfig) { 6148 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6149 if (viewAncestor != null) { 6150 viewAncestor.dispatchResized(frame, overscanInsets, contentInsets, 6151 visibleInsets, reportDraw, newConfig); 6152 } 6153 } 6154 6155 @Override 6156 public void moved(int newX, int newY) { 6157 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6158 if (viewAncestor != null) { 6159 viewAncestor.dispatchMoved(newX, newY); 6160 } 6161 } 6162 6163 @Override 6164 public void dispatchAppVisibility(boolean visible) { 6165 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6166 if (viewAncestor != null) { 6167 viewAncestor.dispatchAppVisibility(visible); 6168 } 6169 } 6170 6171 @Override 6172 public void dispatchGetNewSurface() { 6173 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6174 if (viewAncestor != null) { 6175 viewAncestor.dispatchGetNewSurface(); 6176 } 6177 } 6178 6179 @Override 6180 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 6181 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6182 if (viewAncestor != null) { 6183 viewAncestor.windowFocusChanged(hasFocus, inTouchMode); 6184 } 6185 } 6186 6187 private static int checkCallingPermission(String permission) { 6188 try { 6189 return ActivityManagerNative.getDefault().checkPermission( 6190 permission, Binder.getCallingPid(), Binder.getCallingUid()); 6191 } catch (RemoteException e) { 6192 return PackageManager.PERMISSION_DENIED; 6193 } 6194 } 6195 6196 @Override 6197 public void executeCommand(String command, String parameters, ParcelFileDescriptor out) { 6198 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6199 if (viewAncestor != null) { 6200 final View view = viewAncestor.mView; 6201 if (view != null) { 6202 if (checkCallingPermission(Manifest.permission.DUMP) != 6203 PackageManager.PERMISSION_GRANTED) { 6204 throw new SecurityException("Insufficient permissions to invoke" 6205 + " executeCommand() from pid=" + Binder.getCallingPid() 6206 + ", uid=" + Binder.getCallingUid()); 6207 } 6208 6209 OutputStream clientStream = null; 6210 try { 6211 clientStream = new ParcelFileDescriptor.AutoCloseOutputStream(out); 6212 ViewDebug.dispatchCommand(view, command, parameters, clientStream); 6213 } catch (IOException e) { 6214 e.printStackTrace(); 6215 } finally { 6216 if (clientStream != null) { 6217 try { 6218 clientStream.close(); 6219 } catch (IOException e) { 6220 e.printStackTrace(); 6221 } 6222 } 6223 } 6224 } 6225 } 6226 } 6227 6228 @Override 6229 public void closeSystemDialogs(String reason) { 6230 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6231 if (viewAncestor != null) { 6232 viewAncestor.dispatchCloseSystemDialogs(reason); 6233 } 6234 } 6235 6236 @Override 6237 public void dispatchWallpaperOffsets(float x, float y, float xStep, float yStep, 6238 boolean sync) { 6239 if (sync) { 6240 try { 6241 mWindowSession.wallpaperOffsetsComplete(asBinder()); 6242 } catch (RemoteException e) { 6243 } 6244 } 6245 } 6246 6247 @Override 6248 public void dispatchWallpaperCommand(String action, int x, int y, 6249 int z, Bundle extras, boolean sync) { 6250 if (sync) { 6251 try { 6252 mWindowSession.wallpaperCommandComplete(asBinder(), null); 6253 } catch (RemoteException e) { 6254 } 6255 } 6256 } 6257 6258 /* Drag/drop */ 6259 @Override 6260 public void dispatchDragEvent(DragEvent event) { 6261 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6262 if (viewAncestor != null) { 6263 viewAncestor.dispatchDragEvent(event); 6264 } 6265 } 6266 6267 @Override 6268 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 6269 int localValue, int localChanges) { 6270 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6271 if (viewAncestor != null) { 6272 viewAncestor.dispatchSystemUiVisibilityChanged(seq, globalVisibility, 6273 localValue, localChanges); 6274 } 6275 } 6276 6277 @Override 6278 public void doneAnimating() { 6279 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6280 if (viewAncestor != null) { 6281 viewAncestor.dispatchDoneAnimating(); 6282 } 6283 } 6284 } 6285 6286 public static final class CalledFromWrongThreadException extends AndroidRuntimeException { 6287 public CalledFromWrongThreadException(String msg) { 6288 super(msg); 6289 } 6290 } 6291 6292 private final SurfaceHolder mHolder = new SurfaceHolder() { 6293 // we only need a SurfaceHolder for opengl. it would be nice 6294 // to implement everything else though, especially the callback 6295 // support (opengl doesn't make use of it right now, but eventually 6296 // will). 6297 @Override 6298 public Surface getSurface() { 6299 return mSurface; 6300 } 6301 6302 @Override 6303 public boolean isCreating() { 6304 return false; 6305 } 6306 6307 @Override 6308 public void addCallback(Callback callback) { 6309 } 6310 6311 @Override 6312 public void removeCallback(Callback callback) { 6313 } 6314 6315 @Override 6316 public void setFixedSize(int width, int height) { 6317 } 6318 6319 @Override 6320 public void setSizeFromLayout() { 6321 } 6322 6323 @Override 6324 public void setFormat(int format) { 6325 } 6326 6327 @Override 6328 public void setType(int type) { 6329 } 6330 6331 @Override 6332 public void setKeepScreenOn(boolean screenOn) { 6333 } 6334 6335 @Override 6336 public Canvas lockCanvas() { 6337 return null; 6338 } 6339 6340 @Override 6341 public Canvas lockCanvas(Rect dirty) { 6342 return null; 6343 } 6344 6345 @Override 6346 public void unlockCanvasAndPost(Canvas canvas) { 6347 } 6348 @Override 6349 public Rect getSurfaceFrame() { 6350 return null; 6351 } 6352 }; 6353 6354 static RunQueue getRunQueue() { 6355 RunQueue rq = sRunQueues.get(); 6356 if (rq != null) { 6357 return rq; 6358 } 6359 rq = new RunQueue(); 6360 sRunQueues.set(rq); 6361 return rq; 6362 } 6363 6364 /** 6365 * The run queue is used to enqueue pending work from Views when no Handler is 6366 * attached. The work is executed during the next call to performTraversals on 6367 * the thread. 6368 * @hide 6369 */ 6370 static final class RunQueue { 6371 private final ArrayList<HandlerAction> mActions = new ArrayList<HandlerAction>(); 6372 6373 void post(Runnable action) { 6374 postDelayed(action, 0); 6375 } 6376 6377 void postDelayed(Runnable action, long delayMillis) { 6378 HandlerAction handlerAction = new HandlerAction(); 6379 handlerAction.action = action; 6380 handlerAction.delay = delayMillis; 6381 6382 synchronized (mActions) { 6383 mActions.add(handlerAction); 6384 } 6385 } 6386 6387 void removeCallbacks(Runnable action) { 6388 final HandlerAction handlerAction = new HandlerAction(); 6389 handlerAction.action = action; 6390 6391 synchronized (mActions) { 6392 final ArrayList<HandlerAction> actions = mActions; 6393 6394 while (actions.remove(handlerAction)) { 6395 // Keep going 6396 } 6397 } 6398 } 6399 6400 void executeActions(Handler handler) { 6401 synchronized (mActions) { 6402 final ArrayList<HandlerAction> actions = mActions; 6403 final int count = actions.size(); 6404 6405 for (int i = 0; i < count; i++) { 6406 final HandlerAction handlerAction = actions.get(i); 6407 handler.postDelayed(handlerAction.action, handlerAction.delay); 6408 } 6409 6410 actions.clear(); 6411 } 6412 } 6413 6414 private static class HandlerAction { 6415 Runnable action; 6416 long delay; 6417 6418 @Override 6419 public boolean equals(Object o) { 6420 if (this == o) return true; 6421 if (o == null || getClass() != o.getClass()) return false; 6422 6423 HandlerAction that = (HandlerAction) o; 6424 return !(action != null ? !action.equals(that.action) : that.action != null); 6425 6426 } 6427 6428 @Override 6429 public int hashCode() { 6430 int result = action != null ? action.hashCode() : 0; 6431 result = 31 * result + (int) (delay ^ (delay >>> 32)); 6432 return result; 6433 } 6434 } 6435 } 6436 6437 /** 6438 * Class for managing the accessibility interaction connection 6439 * based on the global accessibility state. 6440 */ 6441 final class AccessibilityInteractionConnectionManager 6442 implements AccessibilityStateChangeListener { 6443 @Override 6444 public void onAccessibilityStateChanged(boolean enabled) { 6445 if (enabled) { 6446 ensureConnection(); 6447 if (mAttachInfo != null && mAttachInfo.mHasWindowFocus) { 6448 mView.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 6449 View focusedView = mView.findFocus(); 6450 if (focusedView != null && focusedView != mView) { 6451 focusedView.sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_FOCUSED); 6452 } 6453 } 6454 } else { 6455 ensureNoConnection(); 6456 mHandler.obtainMessage(MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST).sendToTarget(); 6457 } 6458 } 6459 6460 public void ensureConnection() { 6461 if (mAttachInfo != null) { 6462 final boolean registered = 6463 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED; 6464 if (!registered) { 6465 mAttachInfo.mAccessibilityWindowId = 6466 mAccessibilityManager.addAccessibilityInteractionConnection(mWindow, 6467 new AccessibilityInteractionConnection(ViewRootImpl.this)); 6468 } 6469 } 6470 } 6471 6472 public void ensureNoConnection() { 6473 final boolean registered = 6474 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED; 6475 if (registered) { 6476 mAttachInfo.mAccessibilityWindowId = AccessibilityNodeInfo.UNDEFINED; 6477 mAccessibilityManager.removeAccessibilityInteractionConnection(mWindow); 6478 } 6479 } 6480 } 6481 6482 /** 6483 * This class is an interface this ViewAncestor provides to the 6484 * AccessibilityManagerService to the latter can interact with 6485 * the view hierarchy in this ViewAncestor. 6486 */ 6487 static final class AccessibilityInteractionConnection 6488 extends IAccessibilityInteractionConnection.Stub { 6489 private final WeakReference<ViewRootImpl> mViewRootImpl; 6490 6491 AccessibilityInteractionConnection(ViewRootImpl viewRootImpl) { 6492 mViewRootImpl = new WeakReference<ViewRootImpl>(viewRootImpl); 6493 } 6494 6495 @Override 6496 public void findAccessibilityNodeInfoByAccessibilityId(long accessibilityNodeId, 6497 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 6498 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6499 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6500 if (viewRootImpl != null && viewRootImpl.mView != null) { 6501 viewRootImpl.getAccessibilityInteractionController() 6502 .findAccessibilityNodeInfoByAccessibilityIdClientThread(accessibilityNodeId, 6503 interactionId, callback, flags, interrogatingPid, interrogatingTid, 6504 spec); 6505 } else { 6506 // We cannot make the call and notify the caller so it does not wait. 6507 try { 6508 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 6509 } catch (RemoteException re) { 6510 /* best effort - ignore */ 6511 } 6512 } 6513 } 6514 6515 @Override 6516 public void performAccessibilityAction(long accessibilityNodeId, int action, 6517 Bundle arguments, int interactionId, 6518 IAccessibilityInteractionConnectionCallback callback, int flags, 6519 int interogatingPid, long interrogatingTid) { 6520 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6521 if (viewRootImpl != null && viewRootImpl.mView != null) { 6522 viewRootImpl.getAccessibilityInteractionController() 6523 .performAccessibilityActionClientThread(accessibilityNodeId, action, arguments, 6524 interactionId, callback, flags, interogatingPid, interrogatingTid); 6525 } else { 6526 // We cannot make the call and notify the caller so it does not wait. 6527 try { 6528 callback.setPerformAccessibilityActionResult(false, interactionId); 6529 } catch (RemoteException re) { 6530 /* best effort - ignore */ 6531 } 6532 } 6533 } 6534 6535 @Override 6536 public void findAccessibilityNodeInfosByViewId(long accessibilityNodeId, 6537 String viewId, int interactionId, 6538 IAccessibilityInteractionConnectionCallback callback, int flags, 6539 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6540 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6541 if (viewRootImpl != null && viewRootImpl.mView != null) { 6542 viewRootImpl.getAccessibilityInteractionController() 6543 .findAccessibilityNodeInfosByViewIdClientThread(accessibilityNodeId, 6544 viewId, interactionId, callback, flags, interrogatingPid, 6545 interrogatingTid, spec); 6546 } else { 6547 // We cannot make the call and notify the caller so it does not wait. 6548 try { 6549 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6550 } catch (RemoteException re) { 6551 /* best effort - ignore */ 6552 } 6553 } 6554 } 6555 6556 @Override 6557 public void findAccessibilityNodeInfosByText(long accessibilityNodeId, String text, 6558 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 6559 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6560 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6561 if (viewRootImpl != null && viewRootImpl.mView != null) { 6562 viewRootImpl.getAccessibilityInteractionController() 6563 .findAccessibilityNodeInfosByTextClientThread(accessibilityNodeId, text, 6564 interactionId, callback, flags, interrogatingPid, interrogatingTid, 6565 spec); 6566 } else { 6567 // We cannot make the call and notify the caller so it does not wait. 6568 try { 6569 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 6570 } catch (RemoteException re) { 6571 /* best effort - ignore */ 6572 } 6573 } 6574 } 6575 6576 @Override 6577 public void findFocus(long accessibilityNodeId, int focusType, int interactionId, 6578 IAccessibilityInteractionConnectionCallback callback, int flags, 6579 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6580 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6581 if (viewRootImpl != null && viewRootImpl.mView != null) { 6582 viewRootImpl.getAccessibilityInteractionController() 6583 .findFocusClientThread(accessibilityNodeId, focusType, interactionId, callback, 6584 flags, interrogatingPid, interrogatingTid, spec); 6585 } else { 6586 // We cannot make the call and notify the caller so it does not wait. 6587 try { 6588 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6589 } catch (RemoteException re) { 6590 /* best effort - ignore */ 6591 } 6592 } 6593 } 6594 6595 @Override 6596 public void focusSearch(long accessibilityNodeId, int direction, int interactionId, 6597 IAccessibilityInteractionConnectionCallback callback, int flags, 6598 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6599 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6600 if (viewRootImpl != null && viewRootImpl.mView != null) { 6601 viewRootImpl.getAccessibilityInteractionController() 6602 .focusSearchClientThread(accessibilityNodeId, direction, interactionId, 6603 callback, flags, interrogatingPid, interrogatingTid, spec); 6604 } else { 6605 // We cannot make the call and notify the caller so it does not wait. 6606 try { 6607 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6608 } catch (RemoteException re) { 6609 /* best effort - ignore */ 6610 } 6611 } 6612 } 6613 } 6614 6615 private class SendWindowContentChangedAccessibilityEvent implements Runnable { 6616 private int mChangeTypes = 0; 6617 6618 public View mSource; 6619 public long mLastEventTimeMillis; 6620 6621 @Override 6622 public void run() { 6623 // The accessibility may be turned off while we were waiting so check again. 6624 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 6625 mLastEventTimeMillis = SystemClock.uptimeMillis(); 6626 AccessibilityEvent event = AccessibilityEvent.obtain(); 6627 event.setEventType(AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED); 6628 event.setContentChangeTypes(mChangeTypes); 6629 mSource.sendAccessibilityEventUnchecked(event); 6630 } else { 6631 mLastEventTimeMillis = 0; 6632 } 6633 // In any case reset to initial state. 6634 mSource.resetSubtreeAccessibilityStateChanged(); 6635 mSource = null; 6636 mChangeTypes = 0; 6637 } 6638 6639 public void runOrPost(View source, int changeType) { 6640 if (mSource != null) { 6641 // If there is no common predecessor, then mSource points to 6642 // a removed view, hence in this case always prefer the source. 6643 View predecessor = getCommonPredecessor(mSource, source); 6644 mSource = (predecessor != null) ? predecessor : source; 6645 mChangeTypes |= changeType; 6646 return; 6647 } 6648 mSource = source; 6649 mChangeTypes = changeType; 6650 final long timeSinceLastMillis = SystemClock.uptimeMillis() - mLastEventTimeMillis; 6651 final long minEventIntevalMillis = 6652 ViewConfiguration.getSendRecurringAccessibilityEventsInterval(); 6653 if (timeSinceLastMillis >= minEventIntevalMillis) { 6654 mSource.removeCallbacks(this); 6655 run(); 6656 } else { 6657 mSource.postDelayed(this, minEventIntevalMillis - timeSinceLastMillis); 6658 } 6659 } 6660 } 6661} 6662