ViewRootImpl.java revision 5f05965f546fa42750f1a8314f8a2da01fd6bfb4
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.Context; 25import android.content.pm.PackageManager; 26import android.content.res.CompatibilityInfo; 27import android.content.res.Configuration; 28import android.content.res.Resources; 29import android.graphics.Canvas; 30import android.graphics.Matrix; 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.Build; 44import android.os.Bundle; 45import android.os.Debug; 46import android.os.Handler; 47import android.os.Looper; 48import android.os.Message; 49import android.os.ParcelFileDescriptor; 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.TimeUtils; 60import android.util.TypedValue; 61import android.view.Surface.OutOfResourcesException; 62import android.view.View.AttachInfo; 63import android.view.View.MeasureSpec; 64import android.view.accessibility.AccessibilityEvent; 65import android.view.accessibility.AccessibilityManager; 66import android.view.accessibility.AccessibilityManager.AccessibilityStateChangeListener; 67import android.view.accessibility.AccessibilityManager.HighTextContrastChangeListener; 68import android.view.accessibility.AccessibilityNodeInfo; 69import android.view.accessibility.AccessibilityNodeProvider; 70import android.view.accessibility.IAccessibilityInteractionConnection; 71import android.view.accessibility.IAccessibilityInteractionConnectionCallback; 72import android.view.animation.AccelerateDecelerateInterpolator; 73import android.view.animation.Interpolator; 74import android.view.inputmethod.InputConnection; 75import android.view.inputmethod.InputMethodManager; 76import android.widget.Scroller; 77 78import com.android.internal.R; 79import com.android.internal.os.SomeArgs; 80import com.android.internal.policy.PhoneFallbackEventHandler; 81import com.android.internal.util.ScreenShapeHelper; 82import com.android.internal.view.BaseSurfaceHolder; 83import com.android.internal.view.RootViewSurfaceTaker; 84 85import java.io.FileDescriptor; 86import java.io.IOException; 87import java.io.OutputStream; 88import java.io.PrintWriter; 89import java.lang.ref.WeakReference; 90import java.util.ArrayList; 91import java.util.HashSet; 92 93/** 94 * The top of a view hierarchy, implementing the needed protocol between View 95 * and the WindowManager. This is for the most part an internal implementation 96 * detail of {@link WindowManagerGlobal}. 97 * 98 * {@hide} 99 */ 100@SuppressWarnings({"EmptyCatchBlock", "PointlessBooleanExpression"}) 101public final class ViewRootImpl implements ViewParent, 102 View.AttachInfo.Callbacks, HardwareRenderer.HardwareDrawCallbacks { 103 private static final String TAG = "ViewRootImpl"; 104 private static final boolean DBG = false; 105 private static final boolean LOCAL_LOGV = false; 106 /** @noinspection PointlessBooleanExpression*/ 107 private static final boolean DEBUG_DRAW = false || LOCAL_LOGV; 108 private static final boolean DEBUG_LAYOUT = false || LOCAL_LOGV; 109 private static final boolean DEBUG_DIALOG = false || LOCAL_LOGV; 110 private static final boolean DEBUG_INPUT_RESIZE = false || LOCAL_LOGV; 111 private static final boolean DEBUG_ORIENTATION = false || LOCAL_LOGV; 112 private static final boolean DEBUG_TRACKBALL = false || LOCAL_LOGV; 113 private static final boolean DEBUG_IMF = false || LOCAL_LOGV; 114 private static final boolean DEBUG_CONFIGURATION = false || LOCAL_LOGV; 115 private static final boolean DEBUG_FPS = false; 116 private static final boolean DEBUG_INPUT_STAGES = false || LOCAL_LOGV; 117 118 /** 119 * Set this system property to true to force the view hierarchy to render 120 * at 60 Hz. This can be used to measure the potential framerate. 121 */ 122 private static final String PROPERTY_PROFILE_RENDERING = "viewroot.profile_rendering"; 123 124 // properties used by emulator to determine display shape 125 public static final String PROPERTY_EMULATOR_CIRCULAR = "ro.emulator.circular"; 126 public static final String PROPERTY_EMULATOR_WIN_OUTSET_BOTTOM_PX = 127 "ro.emu.win_outset_bottom_px"; 128 129 /** 130 * Maximum time we allow the user to roll the trackball enough to generate 131 * a key event, before resetting the counters. 132 */ 133 static final int MAX_TRACKBALL_DELAY = 250; 134 135 static final ThreadLocal<RunQueue> sRunQueues = new ThreadLocal<RunQueue>(); 136 137 static final ArrayList<Runnable> sFirstDrawHandlers = new ArrayList<Runnable>(); 138 static boolean sFirstDrawComplete = false; 139 140 static final ArrayList<ComponentCallbacks> sConfigCallbacks 141 = new ArrayList<ComponentCallbacks>(); 142 143 final Context mContext; 144 final IWindowSession mWindowSession; 145 final Display mDisplay; 146 final DisplayManager mDisplayManager; 147 final String mBasePackageName; 148 149 final int[] mTmpLocation = new int[2]; 150 151 final TypedValue mTmpValue = new TypedValue(); 152 153 final Thread mThread; 154 155 final WindowLeaked mLocation; 156 157 final WindowManager.LayoutParams mWindowAttributes = new WindowManager.LayoutParams(); 158 159 final W mWindow; 160 161 final int mTargetSdkVersion; 162 163 int mSeq; 164 165 View mView; 166 167 View mAccessibilityFocusedHost; 168 AccessibilityNodeInfo mAccessibilityFocusedVirtualView; 169 170 int mViewVisibility; 171 boolean mAppVisible = true; 172 int mOrigWindowType = -1; 173 174 // Set to true if the owner of this window is in the stopped state, 175 // so the window should no longer be active. 176 boolean mStopped = false; 177 178 // Set to true to stop input during an Activity Transition. 179 boolean mPausedForTransition = false; 180 181 boolean mLastInCompatMode = false; 182 183 SurfaceHolder.Callback2 mSurfaceHolderCallback; 184 BaseSurfaceHolder mSurfaceHolder; 185 boolean mIsCreating; 186 boolean mDrawingAllowed; 187 188 final Region mTransparentRegion; 189 final Region mPreviousTransparentRegion; 190 191 int mWidth; 192 int mHeight; 193 Rect mDirty; 194 boolean mIsAnimating; 195 196 CompatibilityInfo.Translator mTranslator; 197 198 final View.AttachInfo mAttachInfo; 199 InputChannel mInputChannel; 200 InputQueue.Callback mInputQueueCallback; 201 InputQueue mInputQueue; 202 FallbackEventHandler mFallbackEventHandler; 203 Choreographer mChoreographer; 204 205 final Rect mTempRect; // used in the transaction to not thrash the heap. 206 final Rect mVisRect; // used to retrieve visible rect of focused view. 207 208 boolean mTraversalScheduled; 209 int mTraversalBarrier; 210 boolean mWillDrawSoon; 211 /** Set to true while in performTraversals for detecting when die(true) is called from internal 212 * callbacks such as onMeasure, onPreDraw, onDraw and deferring doDie() until later. */ 213 boolean mIsInTraversal; 214 boolean mApplyInsetsRequested; 215 boolean mLayoutRequested; 216 boolean mFirst; 217 boolean mReportNextDraw; 218 boolean mFullRedrawNeeded; 219 boolean mNewSurfaceNeeded; 220 boolean mHasHadWindowFocus; 221 boolean mLastWasImTarget; 222 boolean mWindowsAnimating; 223 boolean mDrawDuringWindowsAnimating; 224 225 /** How many frames the app is still allowed to draw when a window animation is happening. */ 226 private int mRemainingFrameCount; 227 boolean mIsDrawing; 228 int mLastSystemUiVisibility; 229 int mClientWindowLayoutFlags; 230 boolean mLastOverscanRequested; 231 232 // Pool of queued input events. 233 private static final int MAX_QUEUED_INPUT_EVENT_POOL_SIZE = 10; 234 private QueuedInputEvent mQueuedInputEventPool; 235 private int mQueuedInputEventPoolSize; 236 237 /* Input event queue. 238 * Pending input events are input events waiting to be delivered to the input stages 239 * and handled by the application. 240 */ 241 QueuedInputEvent mPendingInputEventHead; 242 QueuedInputEvent mPendingInputEventTail; 243 int mPendingInputEventCount; 244 boolean mProcessInputEventsScheduled; 245 boolean mUnbufferedInputDispatch; 246 String mPendingInputEventQueueLengthCounterName = "pq"; 247 248 InputStage mFirstInputStage; 249 InputStage mFirstPostImeInputStage; 250 InputStage mSyntheticInputStage; 251 252 boolean mWindowAttributesChanged = false; 253 int mWindowAttributesChangesFlag = 0; 254 255 // These can be accessed by any thread, must be protected with a lock. 256 // Surface can never be reassigned or cleared (use Surface.clear()). 257 final Surface mSurface = new Surface(); 258 259 boolean mAdded; 260 boolean mAddedTouchMode; 261 262 final DisplayAdjustments mDisplayAdjustments; 263 264 // These are accessed by multiple threads. 265 final Rect mWinFrame; // frame given by window manager. 266 267 final Rect mPendingOverscanInsets = new Rect(); 268 final Rect mPendingVisibleInsets = new Rect(); 269 final Rect mPendingStableInsets = new Rect(); 270 final Rect mPendingContentInsets = new Rect(); 271 final ViewTreeObserver.InternalInsetsInfo mLastGivenInsets 272 = new ViewTreeObserver.InternalInsetsInfo(); 273 274 final Rect mDispatchContentInsets = new Rect(); 275 final Rect mDispatchStableInsets = new Rect(); 276 277 private WindowInsets mLastWindowInsets; 278 279 final Configuration mLastConfiguration = new Configuration(); 280 final Configuration mPendingConfiguration = new Configuration(); 281 282 boolean mScrollMayChange; 283 int mSoftInputMode; 284 WeakReference<View> mLastScrolledFocus; 285 int mScrollY; 286 int mCurScrollY; 287 Scroller mScroller; 288 HardwareLayer mResizeBuffer; 289 long mResizeBufferStartTime; 290 int mResizeBufferDuration; 291 // Used to block the creation of the ResizeBuffer due to invalidations in 292 // the previous DisplayList tree that must prevent re-execution. 293 // Currently this means a functor was detached. 294 boolean mBlockResizeBuffer; 295 static final Interpolator mResizeInterpolator = new AccelerateDecelerateInterpolator(); 296 private ArrayList<LayoutTransition> mPendingTransitions; 297 298 final ViewConfiguration mViewConfiguration; 299 300 /* Drag/drop */ 301 ClipDescription mDragDescription; 302 View mCurrentDragView; 303 volatile Object mLocalDragState; 304 final PointF mDragPoint = new PointF(); 305 final PointF mLastTouchPoint = new PointF(); 306 307 private boolean mProfileRendering; 308 private Choreographer.FrameCallback mRenderProfiler; 309 private boolean mRenderProfilingEnabled; 310 311 // Variables to track frames per second, enabled via DEBUG_FPS flag 312 private long mFpsStartTime = -1; 313 private long mFpsPrevTime = -1; 314 private int mFpsNumFrames; 315 316 /** 317 * see {@link #playSoundEffect(int)} 318 */ 319 AudioManager mAudioManager; 320 321 final AccessibilityManager mAccessibilityManager; 322 323 AccessibilityInteractionController mAccessibilityInteractionController; 324 325 AccessibilityInteractionConnectionManager mAccessibilityInteractionConnectionManager; 326 HighContrastTextManager mHighContrastTextManager; 327 328 SendWindowContentChangedAccessibilityEvent mSendWindowContentChangedAccessibilityEvent; 329 330 HashSet<View> mTempHashSet; 331 332 private final int mDensity; 333 private final int mNoncompatDensity; 334 335 private boolean mInLayout = false; 336 ArrayList<View> mLayoutRequesters = new ArrayList<View>(); 337 boolean mHandlingLayoutInLayoutRequest = false; 338 339 private int mViewLayoutDirectionInitial; 340 341 /** Set to true once doDie() has been called. */ 342 private boolean mRemoved; 343 344 private final boolean mWindowIsRound; 345 346 /** 347 * Consistency verifier for debugging purposes. 348 */ 349 protected final InputEventConsistencyVerifier mInputEventConsistencyVerifier = 350 InputEventConsistencyVerifier.isInstrumentationEnabled() ? 351 new InputEventConsistencyVerifier(this, 0) : null; 352 353 static final class SystemUiVisibilityInfo { 354 int seq; 355 int globalVisibility; 356 int localValue; 357 int localChanges; 358 } 359 360 public ViewRootImpl(Context context, Display display) { 361 mContext = context; 362 mWindowSession = WindowManagerGlobal.getWindowSession(); 363 mDisplay = display; 364 mBasePackageName = context.getBasePackageName(); 365 366 mDisplayAdjustments = display.getDisplayAdjustments(); 367 368 mThread = Thread.currentThread(); 369 mLocation = new WindowLeaked(null); 370 mLocation.fillInStackTrace(); 371 mWidth = -1; 372 mHeight = -1; 373 mDirty = new Rect(); 374 mTempRect = new Rect(); 375 mVisRect = new Rect(); 376 mWinFrame = new Rect(); 377 mWindow = new W(this); 378 mTargetSdkVersion = context.getApplicationInfo().targetSdkVersion; 379 mViewVisibility = View.GONE; 380 mTransparentRegion = new Region(); 381 mPreviousTransparentRegion = new Region(); 382 mFirst = true; // true for the first time the view is added 383 mAdded = false; 384 mAttachInfo = new View.AttachInfo(mWindowSession, mWindow, display, this, mHandler, this); 385 mAccessibilityManager = AccessibilityManager.getInstance(context); 386 mAccessibilityInteractionConnectionManager = 387 new AccessibilityInteractionConnectionManager(); 388 mAccessibilityManager.addAccessibilityStateChangeListener( 389 mAccessibilityInteractionConnectionManager); 390 mHighContrastTextManager = new HighContrastTextManager(); 391 mAccessibilityManager.addHighTextContrastStateChangeListener( 392 mHighContrastTextManager); 393 mViewConfiguration = ViewConfiguration.get(context); 394 mDensity = context.getResources().getDisplayMetrics().densityDpi; 395 mNoncompatDensity = context.getResources().getDisplayMetrics().noncompatDensityDpi; 396 mFallbackEventHandler = new PhoneFallbackEventHandler(context); 397 mChoreographer = Choreographer.getInstance(); 398 mDisplayManager = (DisplayManager)context.getSystemService(Context.DISPLAY_SERVICE); 399 loadSystemProperties(); 400 mWindowIsRound = ScreenShapeHelper.getWindowIsRound(context.getResources()); 401 } 402 403 public static void addFirstDrawHandler(Runnable callback) { 404 synchronized (sFirstDrawHandlers) { 405 if (!sFirstDrawComplete) { 406 sFirstDrawHandlers.add(callback); 407 } 408 } 409 } 410 411 public static void addConfigCallback(ComponentCallbacks callback) { 412 synchronized (sConfigCallbacks) { 413 sConfigCallbacks.add(callback); 414 } 415 } 416 417 // FIXME for perf testing only 418 private boolean mProfile = false; 419 420 /** 421 * Call this to profile the next traversal call. 422 * FIXME for perf testing only. Remove eventually 423 */ 424 public void profile() { 425 mProfile = true; 426 } 427 428 /** 429 * Indicates whether we are in touch mode. Calling this method triggers an IPC 430 * call and should be avoided whenever possible. 431 * 432 * @return True, if the device is in touch mode, false otherwise. 433 * 434 * @hide 435 */ 436 static boolean isInTouchMode() { 437 IWindowSession windowSession = WindowManagerGlobal.peekWindowSession(); 438 if (windowSession != null) { 439 try { 440 return windowSession.getInTouchMode(); 441 } catch (RemoteException e) { 442 } 443 } 444 return false; 445 } 446 447 /** 448 * We have one child 449 */ 450 public void setView(View view, WindowManager.LayoutParams attrs, View panelParentView) { 451 synchronized (this) { 452 if (mView == null) { 453 mView = view; 454 455 mAttachInfo.mDisplayState = mDisplay.getState(); 456 mDisplayManager.registerDisplayListener(mDisplayListener, mHandler); 457 458 mViewLayoutDirectionInitial = mView.getRawLayoutDirection(); 459 mFallbackEventHandler.setView(view); 460 mWindowAttributes.copyFrom(attrs); 461 if (mWindowAttributes.packageName == null) { 462 mWindowAttributes.packageName = mBasePackageName; 463 } 464 attrs = mWindowAttributes; 465 // Keep track of the actual window flags supplied by the client. 466 mClientWindowLayoutFlags = attrs.flags; 467 468 setAccessibilityFocus(null, null); 469 470 if (view instanceof RootViewSurfaceTaker) { 471 mSurfaceHolderCallback = 472 ((RootViewSurfaceTaker)view).willYouTakeTheSurface(); 473 if (mSurfaceHolderCallback != null) { 474 mSurfaceHolder = new TakenSurfaceHolder(); 475 mSurfaceHolder.setFormat(PixelFormat.UNKNOWN); 476 } 477 } 478 479 // Compute surface insets required to draw at specified Z value. 480 // TODO: Use real shadow insets for a constant max Z. 481 if (!attrs.hasManualSurfaceInsets) { 482 final int surfaceInset = (int) Math.ceil(view.getZ() * 2); 483 attrs.surfaceInsets.set(surfaceInset, surfaceInset, surfaceInset, surfaceInset); 484 } 485 486 CompatibilityInfo compatibilityInfo = mDisplayAdjustments.getCompatibilityInfo(); 487 mTranslator = compatibilityInfo.getTranslator(); 488 489 // If the application owns the surface, don't enable hardware acceleration 490 if (mSurfaceHolder == null) { 491 enableHardwareAcceleration(attrs); 492 } 493 494 boolean restore = false; 495 if (mTranslator != null) { 496 mSurface.setCompatibilityTranslator(mTranslator); 497 restore = true; 498 attrs.backup(); 499 mTranslator.translateWindowLayout(attrs); 500 } 501 if (DEBUG_LAYOUT) Log.d(TAG, "WindowLayout in setView:" + attrs); 502 503 if (!compatibilityInfo.supportsScreen()) { 504 attrs.privateFlags |= WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 505 mLastInCompatMode = true; 506 } 507 508 mSoftInputMode = attrs.softInputMode; 509 mWindowAttributesChanged = true; 510 mWindowAttributesChangesFlag = WindowManager.LayoutParams.EVERYTHING_CHANGED; 511 mAttachInfo.mRootView = view; 512 mAttachInfo.mScalingRequired = mTranslator != null; 513 mAttachInfo.mApplicationScale = 514 mTranslator == null ? 1.0f : mTranslator.applicationScale; 515 if (panelParentView != null) { 516 mAttachInfo.mPanelParentWindowToken 517 = panelParentView.getApplicationWindowToken(); 518 } 519 mAdded = true; 520 int res; /* = WindowManagerImpl.ADD_OKAY; */ 521 522 // Schedule the first layout -before- adding to the window 523 // manager, to make sure we do the relayout before receiving 524 // any other events from the system. 525 requestLayout(); 526 if ((mWindowAttributes.inputFeatures 527 & WindowManager.LayoutParams.INPUT_FEATURE_NO_INPUT_CHANNEL) == 0) { 528 mInputChannel = new InputChannel(); 529 } 530 try { 531 mOrigWindowType = mWindowAttributes.type; 532 mAttachInfo.mRecomputeGlobalAttributes = true; 533 collectViewAttributes(); 534 res = mWindowSession.addToDisplay(mWindow, mSeq, mWindowAttributes, 535 getHostVisibility(), mDisplay.getDisplayId(), 536 mAttachInfo.mContentInsets, mAttachInfo.mStableInsets, mInputChannel); 537 } catch (RemoteException e) { 538 mAdded = false; 539 mView = null; 540 mAttachInfo.mRootView = null; 541 mInputChannel = null; 542 mFallbackEventHandler.setView(null); 543 unscheduleTraversals(); 544 setAccessibilityFocus(null, null); 545 throw new RuntimeException("Adding window failed", e); 546 } finally { 547 if (restore) { 548 attrs.restore(); 549 } 550 } 551 552 if (mTranslator != null) { 553 mTranslator.translateRectInScreenToAppWindow(mAttachInfo.mContentInsets); 554 } 555 mPendingOverscanInsets.set(0, 0, 0, 0); 556 mPendingContentInsets.set(mAttachInfo.mContentInsets); 557 mPendingStableInsets.set(mAttachInfo.mStableInsets); 558 mPendingVisibleInsets.set(0, 0, 0, 0); 559 try { 560 relayoutWindow(attrs, getHostVisibility(), false); 561 } catch (RemoteException e) { 562 if (DEBUG_LAYOUT) Log.e(TAG, "failed to relayoutWindow", e); 563 } 564 if (DEBUG_LAYOUT) Log.v(TAG, "Added window " + mWindow); 565 if (res < WindowManagerGlobal.ADD_OKAY) { 566 mAttachInfo.mRootView = null; 567 mAdded = false; 568 mFallbackEventHandler.setView(null); 569 unscheduleTraversals(); 570 setAccessibilityFocus(null, null); 571 switch (res) { 572 case WindowManagerGlobal.ADD_BAD_APP_TOKEN: 573 case WindowManagerGlobal.ADD_BAD_SUBWINDOW_TOKEN: 574 throw new WindowManager.BadTokenException( 575 "Unable to add window -- token " + attrs.token 576 + " is not valid; is your activity running?"); 577 case WindowManagerGlobal.ADD_NOT_APP_TOKEN: 578 throw new WindowManager.BadTokenException( 579 "Unable to add window -- token " + attrs.token 580 + " is not for an application"); 581 case WindowManagerGlobal.ADD_APP_EXITING: 582 throw new WindowManager.BadTokenException( 583 "Unable to add window -- app for token " + attrs.token 584 + " is exiting"); 585 case WindowManagerGlobal.ADD_DUPLICATE_ADD: 586 throw new WindowManager.BadTokenException( 587 "Unable to add window -- window " + mWindow 588 + " has already been added"); 589 case WindowManagerGlobal.ADD_STARTING_NOT_NEEDED: 590 // Silently ignore -- we would have just removed it 591 // right away, anyway. 592 return; 593 case WindowManagerGlobal.ADD_MULTIPLE_SINGLETON: 594 throw new WindowManager.BadTokenException( 595 "Unable to add window " + mWindow + 596 " -- another window of this type already exists"); 597 case WindowManagerGlobal.ADD_PERMISSION_DENIED: 598 throw new WindowManager.BadTokenException( 599 "Unable to add window " + mWindow + 600 " -- permission denied for this window type"); 601 case WindowManagerGlobal.ADD_INVALID_DISPLAY: 602 throw new WindowManager.InvalidDisplayException( 603 "Unable to add window " + mWindow + 604 " -- the specified display can not be found"); 605 case WindowManagerGlobal.ADD_INVALID_TYPE: 606 throw new WindowManager.InvalidDisplayException( 607 "Unable to add window " + mWindow 608 + " -- the specified window type is not valid"); 609 } 610 throw new RuntimeException( 611 "Unable to add window -- unknown error code " + res); 612 } 613 614 if (view instanceof RootViewSurfaceTaker) { 615 mInputQueueCallback = 616 ((RootViewSurfaceTaker)view).willYouTakeTheInputQueue(); 617 } 618 if (mInputChannel != null) { 619 if (mInputQueueCallback != null) { 620 mInputQueue = new InputQueue(); 621 mInputQueueCallback.onInputQueueCreated(mInputQueue); 622 } 623 mInputEventReceiver = new WindowInputEventReceiver(mInputChannel, 624 Looper.myLooper()); 625 } 626 627 view.assignParent(this); 628 mAddedTouchMode = (res & WindowManagerGlobal.ADD_FLAG_IN_TOUCH_MODE) != 0; 629 mAppVisible = (res & WindowManagerGlobal.ADD_FLAG_APP_VISIBLE) != 0; 630 631 if (mAccessibilityManager.isEnabled()) { 632 mAccessibilityInteractionConnectionManager.ensureConnection(); 633 } 634 635 if (view.getImportantForAccessibility() == View.IMPORTANT_FOR_ACCESSIBILITY_AUTO) { 636 view.setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_YES); 637 } 638 639 // Set up the input pipeline. 640 CharSequence counterSuffix = attrs.getTitle(); 641 mSyntheticInputStage = new SyntheticInputStage(); 642 InputStage viewPostImeStage = new ViewPostImeInputStage(mSyntheticInputStage); 643 InputStage nativePostImeStage = new NativePostImeInputStage(viewPostImeStage, 644 "aq:native-post-ime:" + counterSuffix); 645 InputStage earlyPostImeStage = new EarlyPostImeInputStage(nativePostImeStage); 646 InputStage imeStage = new ImeInputStage(earlyPostImeStage, 647 "aq:ime:" + counterSuffix); 648 InputStage viewPreImeStage = new ViewPreImeInputStage(imeStage); 649 InputStage nativePreImeStage = new NativePreImeInputStage(viewPreImeStage, 650 "aq:native-pre-ime:" + counterSuffix); 651 652 mFirstInputStage = nativePreImeStage; 653 mFirstPostImeInputStage = earlyPostImeStage; 654 mPendingInputEventQueueLengthCounterName = "aq:pending:" + counterSuffix; 655 } 656 } 657 } 658 659 /** Whether the window is in local focus mode or not */ 660 private boolean isInLocalFocusMode() { 661 return (mWindowAttributes.flags & WindowManager.LayoutParams.FLAG_LOCAL_FOCUS_MODE) != 0; 662 } 663 664 public int getWindowFlags() { 665 return mWindowAttributes.flags; 666 } 667 668 public CharSequence getTitle() { 669 return mWindowAttributes.getTitle(); 670 } 671 672 void destroyHardwareResources() { 673 if (mAttachInfo.mHardwareRenderer != null) { 674 mAttachInfo.mHardwareRenderer.destroyHardwareResources(mView); 675 mAttachInfo.mHardwareRenderer.destroy(); 676 } 677 } 678 679 public void detachFunctor(long functor) { 680 // TODO: Make the resize buffer some other way to not need this block 681 mBlockResizeBuffer = true; 682 if (mAttachInfo.mHardwareRenderer != null) { 683 // Fence so that any pending invokeFunctor() messages will be processed 684 // before we return from detachFunctor. 685 mAttachInfo.mHardwareRenderer.stopDrawing(); 686 } 687 } 688 689 /** 690 * Schedules the functor for execution in either kModeProcess or 691 * kModeProcessNoContext, depending on whether or not there is an EGLContext. 692 * 693 * @param functor The native functor to invoke 694 * @param waitForCompletion If true, this will not return until the functor 695 * has invoked. If false, the functor may be invoked 696 * asynchronously. 697 */ 698 public void invokeFunctor(long functor, boolean waitForCompletion) { 699 ThreadedRenderer.invokeFunctor(functor, waitForCompletion); 700 } 701 702 public void registerAnimatingRenderNode(RenderNode animator) { 703 if (mAttachInfo.mHardwareRenderer != null) { 704 mAttachInfo.mHardwareRenderer.registerAnimatingRenderNode(animator); 705 } else { 706 if (mAttachInfo.mPendingAnimatingRenderNodes == null) { 707 mAttachInfo.mPendingAnimatingRenderNodes = new ArrayList<RenderNode>(); 708 } 709 mAttachInfo.mPendingAnimatingRenderNodes.add(animator); 710 } 711 } 712 713 private void enableHardwareAcceleration(WindowManager.LayoutParams attrs) { 714 mAttachInfo.mHardwareAccelerated = false; 715 mAttachInfo.mHardwareAccelerationRequested = false; 716 717 // Don't enable hardware acceleration when the application is in compatibility mode 718 if (mTranslator != null) return; 719 720 // Try to enable hardware acceleration if requested 721 final boolean hardwareAccelerated = 722 (attrs.flags & WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED) != 0; 723 724 if (hardwareAccelerated) { 725 if (!HardwareRenderer.isAvailable()) { 726 return; 727 } 728 729 // Persistent processes (including the system) should not do 730 // accelerated rendering on low-end devices. In that case, 731 // sRendererDisabled will be set. In addition, the system process 732 // itself should never do accelerated rendering. In that case, both 733 // sRendererDisabled and sSystemRendererDisabled are set. When 734 // sSystemRendererDisabled is set, PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED 735 // can be used by code on the system process to escape that and enable 736 // HW accelerated drawing. (This is basically for the lock screen.) 737 738 final boolean fakeHwAccelerated = (attrs.privateFlags & 739 WindowManager.LayoutParams.PRIVATE_FLAG_FAKE_HARDWARE_ACCELERATED) != 0; 740 final boolean forceHwAccelerated = (attrs.privateFlags & 741 WindowManager.LayoutParams.PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED) != 0; 742 743 if (fakeHwAccelerated) { 744 // This is exclusively for the preview windows the window manager 745 // shows for launching applications, so they will look more like 746 // the app being launched. 747 mAttachInfo.mHardwareAccelerationRequested = true; 748 } else if (!HardwareRenderer.sRendererDisabled 749 || (HardwareRenderer.sSystemRendererDisabled && forceHwAccelerated)) { 750 if (mAttachInfo.mHardwareRenderer != null) { 751 mAttachInfo.mHardwareRenderer.destroy(); 752 } 753 754 final Rect insets = attrs.surfaceInsets; 755 final boolean hasSurfaceInsets = insets.left != 0 || insets.right != 0 756 || insets.top != 0 || insets.bottom != 0; 757 final boolean translucent = attrs.format != PixelFormat.OPAQUE || hasSurfaceInsets; 758 mAttachInfo.mHardwareRenderer = HardwareRenderer.create(mContext, translucent); 759 if (mAttachInfo.mHardwareRenderer != null) { 760 mAttachInfo.mHardwareRenderer.setName(attrs.getTitle().toString()); 761 mAttachInfo.mHardwareAccelerated = 762 mAttachInfo.mHardwareAccelerationRequested = true; 763 } 764 } 765 } 766 } 767 768 public View getView() { 769 return mView; 770 } 771 772 final WindowLeaked getLocation() { 773 return mLocation; 774 } 775 776 void setLayoutParams(WindowManager.LayoutParams attrs, boolean newView) { 777 synchronized (this) { 778 final int oldInsetLeft = mWindowAttributes.surfaceInsets.left; 779 final int oldInsetTop = mWindowAttributes.surfaceInsets.top; 780 final int oldInsetRight = mWindowAttributes.surfaceInsets.right; 781 final int oldInsetBottom = mWindowAttributes.surfaceInsets.bottom; 782 final int oldSoftInputMode = mWindowAttributes.softInputMode; 783 final boolean oldHasManualSurfaceInsets = mWindowAttributes.hasManualSurfaceInsets; 784 785 // Keep track of the actual window flags supplied by the client. 786 mClientWindowLayoutFlags = attrs.flags; 787 788 // Preserve compatible window flag if exists. 789 final int compatibleWindowFlag = mWindowAttributes.privateFlags 790 & WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 791 792 // Transfer over system UI visibility values as they carry current state. 793 attrs.systemUiVisibility = mWindowAttributes.systemUiVisibility; 794 attrs.subtreeSystemUiVisibility = mWindowAttributes.subtreeSystemUiVisibility; 795 796 mWindowAttributesChangesFlag = mWindowAttributes.copyFrom(attrs); 797 if ((mWindowAttributesChangesFlag 798 & WindowManager.LayoutParams.TRANSLUCENT_FLAGS_CHANGED) != 0) { 799 // Recompute system ui visibility. 800 mAttachInfo.mRecomputeGlobalAttributes = true; 801 } 802 if (mWindowAttributes.packageName == null) { 803 mWindowAttributes.packageName = mBasePackageName; 804 } 805 mWindowAttributes.privateFlags |= compatibleWindowFlag; 806 807 // Restore old surface insets. 808 mWindowAttributes.surfaceInsets.set( 809 oldInsetLeft, oldInsetTop, oldInsetRight, oldInsetBottom); 810 mWindowAttributes.hasManualSurfaceInsets = oldHasManualSurfaceInsets; 811 812 applyKeepScreenOnFlag(mWindowAttributes); 813 814 if (newView) { 815 mSoftInputMode = attrs.softInputMode; 816 requestLayout(); 817 } 818 819 // Don't lose the mode we last auto-computed. 820 if ((attrs.softInputMode & WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 821 == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 822 mWindowAttributes.softInputMode = (mWindowAttributes.softInputMode 823 & ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 824 | (oldSoftInputMode & WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST); 825 } 826 827 mWindowAttributesChanged = true; 828 scheduleTraversals(); 829 } 830 } 831 832 void handleAppVisibility(boolean visible) { 833 if (mAppVisible != visible) { 834 mAppVisible = visible; 835 scheduleTraversals(); 836 if (!mAppVisible) { 837 WindowManagerGlobal.trimForeground(); 838 } 839 } 840 } 841 842 void handleGetNewSurface() { 843 mNewSurfaceNeeded = true; 844 mFullRedrawNeeded = true; 845 scheduleTraversals(); 846 } 847 848 private final DisplayListener mDisplayListener = new DisplayListener() { 849 @Override 850 public void onDisplayChanged(int displayId) { 851 if (mView != null && mDisplay.getDisplayId() == displayId) { 852 final int oldDisplayState = mAttachInfo.mDisplayState; 853 final int newDisplayState = mDisplay.getState(); 854 if (oldDisplayState != newDisplayState) { 855 mAttachInfo.mDisplayState = newDisplayState; 856 pokeDrawLockIfNeeded(); 857 if (oldDisplayState != Display.STATE_UNKNOWN) { 858 final int oldScreenState = toViewScreenState(oldDisplayState); 859 final int newScreenState = toViewScreenState(newDisplayState); 860 if (oldScreenState != newScreenState) { 861 mView.dispatchScreenStateChanged(newScreenState); 862 } 863 if (oldDisplayState == Display.STATE_OFF) { 864 // Draw was suppressed so we need to for it to happen here. 865 mFullRedrawNeeded = true; 866 scheduleTraversals(); 867 } 868 } 869 } 870 } 871 } 872 873 @Override 874 public void onDisplayRemoved(int displayId) { 875 } 876 877 @Override 878 public void onDisplayAdded(int displayId) { 879 } 880 881 private int toViewScreenState(int displayState) { 882 return displayState == Display.STATE_OFF ? 883 View.SCREEN_STATE_OFF : View.SCREEN_STATE_ON; 884 } 885 }; 886 887 void pokeDrawLockIfNeeded() { 888 final int displayState = mAttachInfo.mDisplayState; 889 if (mView != null && mAdded && mTraversalScheduled 890 && (displayState == Display.STATE_DOZE 891 || displayState == Display.STATE_DOZE_SUSPEND)) { 892 try { 893 mWindowSession.pokeDrawLock(mWindow); 894 } catch (RemoteException ex) { 895 // System server died, oh well. 896 } 897 } 898 } 899 900 @Override 901 public void requestFitSystemWindows() { 902 checkThread(); 903 mApplyInsetsRequested = true; 904 scheduleTraversals(); 905 } 906 907 @Override 908 public void requestLayout() { 909 if (!mHandlingLayoutInLayoutRequest) { 910 checkThread(); 911 mLayoutRequested = true; 912 scheduleTraversals(); 913 } 914 } 915 916 @Override 917 public boolean isLayoutRequested() { 918 return mLayoutRequested; 919 } 920 921 void invalidate() { 922 mDirty.set(0, 0, mWidth, mHeight); 923 if (!mWillDrawSoon) { 924 scheduleTraversals(); 925 } 926 } 927 928 void invalidateWorld(View view) { 929 view.invalidate(); 930 if (view instanceof ViewGroup) { 931 ViewGroup parent = (ViewGroup) view; 932 for (int i = 0; i < parent.getChildCount(); i++) { 933 invalidateWorld(parent.getChildAt(i)); 934 } 935 } 936 } 937 938 @Override 939 public void invalidateChild(View child, Rect dirty) { 940 invalidateChildInParent(null, dirty); 941 } 942 943 @Override 944 public ViewParent invalidateChildInParent(int[] location, Rect dirty) { 945 checkThread(); 946 if (DEBUG_DRAW) Log.v(TAG, "Invalidate child: " + dirty); 947 948 if (dirty == null) { 949 invalidate(); 950 return null; 951 } else if (dirty.isEmpty() && !mIsAnimating) { 952 return null; 953 } 954 955 if (mCurScrollY != 0 || mTranslator != null) { 956 mTempRect.set(dirty); 957 dirty = mTempRect; 958 if (mCurScrollY != 0) { 959 dirty.offset(0, -mCurScrollY); 960 } 961 if (mTranslator != null) { 962 mTranslator.translateRectInAppWindowToScreen(dirty); 963 } 964 if (mAttachInfo.mScalingRequired) { 965 dirty.inset(-1, -1); 966 } 967 } 968 969 final Rect localDirty = mDirty; 970 if (!localDirty.isEmpty() && !localDirty.contains(dirty)) { 971 mAttachInfo.mSetIgnoreDirtyState = true; 972 mAttachInfo.mIgnoreDirtyState = true; 973 } 974 975 // Add the new dirty rect to the current one 976 localDirty.union(dirty.left, dirty.top, dirty.right, dirty.bottom); 977 // Intersect with the bounds of the window to skip 978 // updates that lie outside of the visible region 979 final float appScale = mAttachInfo.mApplicationScale; 980 final boolean intersected = localDirty.intersect(0, 0, 981 (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 982 if (!intersected) { 983 localDirty.setEmpty(); 984 } 985 if (!mWillDrawSoon && (intersected || mIsAnimating)) { 986 scheduleTraversals(); 987 } 988 989 return null; 990 } 991 992 void setWindowStopped(boolean stopped) { 993 if (mStopped != stopped) { 994 mStopped = stopped; 995 if (!mStopped) { 996 scheduleTraversals(); 997 } 998 } 999 } 1000 1001 /** 1002 * Block the input events during an Activity Transition. The KEYCODE_BACK event is allowed 1003 * through to allow quick reversal of the Activity Transition. 1004 * 1005 * @param paused true to pause, false to resume. 1006 */ 1007 public void setPausedForTransition(boolean paused) { 1008 mPausedForTransition = paused; 1009 } 1010 1011 @Override 1012 public ViewParent getParent() { 1013 return null; 1014 } 1015 1016 @Override 1017 public boolean getChildVisibleRect(View child, Rect r, android.graphics.Point offset) { 1018 if (child != mView) { 1019 throw new RuntimeException("child is not mine, honest!"); 1020 } 1021 // Note: don't apply scroll offset, because we want to know its 1022 // visibility in the virtual canvas being given to the view hierarchy. 1023 return r.intersect(0, 0, mWidth, mHeight); 1024 } 1025 1026 @Override 1027 public void bringChildToFront(View child) { 1028 } 1029 1030 int getHostVisibility() { 1031 return mAppVisible ? mView.getVisibility() : View.GONE; 1032 } 1033 1034 void disposeResizeBuffer() { 1035 if (mResizeBuffer != null) { 1036 mResizeBuffer.destroy(); 1037 mResizeBuffer = null; 1038 } 1039 } 1040 1041 /** 1042 * Add LayoutTransition to the list of transitions to be started in the next traversal. 1043 * This list will be cleared after the transitions on the list are start()'ed. These 1044 * transitionsa re added by LayoutTransition itself when it sets up animations. The setup 1045 * happens during the layout phase of traversal, which we want to complete before any of the 1046 * animations are started (because those animations may side-effect properties that layout 1047 * depends upon, like the bounding rectangles of the affected views). So we add the transition 1048 * to the list and it is started just prior to starting the drawing phase of traversal. 1049 * 1050 * @param transition The LayoutTransition to be started on the next traversal. 1051 * 1052 * @hide 1053 */ 1054 public void requestTransitionStart(LayoutTransition transition) { 1055 if (mPendingTransitions == null || !mPendingTransitions.contains(transition)) { 1056 if (mPendingTransitions == null) { 1057 mPendingTransitions = new ArrayList<LayoutTransition>(); 1058 } 1059 mPendingTransitions.add(transition); 1060 } 1061 } 1062 1063 /** 1064 * Notifies the HardwareRenderer that a new frame will be coming soon. 1065 * Currently only {@link ThreadedRenderer} cares about this, and uses 1066 * this knowledge to adjust the scheduling of off-thread animations 1067 */ 1068 void notifyRendererOfFramePending() { 1069 if (mAttachInfo.mHardwareRenderer != null) { 1070 mAttachInfo.mHardwareRenderer.notifyFramePending(); 1071 } 1072 } 1073 1074 void scheduleTraversals() { 1075 if (!mTraversalScheduled) { 1076 mTraversalScheduled = true; 1077 mTraversalBarrier = mHandler.getLooper().getQueue().postSyncBarrier(); 1078 mChoreographer.postCallback( 1079 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 1080 if (!mUnbufferedInputDispatch) { 1081 scheduleConsumeBatchedInput(); 1082 } 1083 notifyRendererOfFramePending(); 1084 pokeDrawLockIfNeeded(); 1085 } 1086 } 1087 1088 void unscheduleTraversals() { 1089 if (mTraversalScheduled) { 1090 mTraversalScheduled = false; 1091 mHandler.getLooper().getQueue().removeSyncBarrier(mTraversalBarrier); 1092 mChoreographer.removeCallbacks( 1093 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 1094 } 1095 } 1096 1097 void doTraversal() { 1098 if (mTraversalScheduled) { 1099 mTraversalScheduled = false; 1100 mHandler.getLooper().getQueue().removeSyncBarrier(mTraversalBarrier); 1101 1102 if (mProfile) { 1103 Debug.startMethodTracing("ViewAncestor"); 1104 } 1105 1106 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "performTraversals"); 1107 try { 1108 performTraversals(); 1109 } finally { 1110 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 1111 } 1112 1113 if (mProfile) { 1114 Debug.stopMethodTracing(); 1115 mProfile = false; 1116 } 1117 } 1118 } 1119 1120 private void applyKeepScreenOnFlag(WindowManager.LayoutParams params) { 1121 // Update window's global keep screen on flag: if a view has requested 1122 // that the screen be kept on, then it is always set; otherwise, it is 1123 // set to whatever the client last requested for the global state. 1124 if (mAttachInfo.mKeepScreenOn) { 1125 params.flags |= WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON; 1126 } else { 1127 params.flags = (params.flags&~WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON) 1128 | (mClientWindowLayoutFlags&WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 1129 } 1130 } 1131 1132 private boolean collectViewAttributes() { 1133 if (mAttachInfo.mRecomputeGlobalAttributes) { 1134 //Log.i(TAG, "Computing view hierarchy attributes!"); 1135 mAttachInfo.mRecomputeGlobalAttributes = false; 1136 boolean oldScreenOn = mAttachInfo.mKeepScreenOn; 1137 mAttachInfo.mKeepScreenOn = false; 1138 mAttachInfo.mSystemUiVisibility = 0; 1139 mAttachInfo.mHasSystemUiListeners = false; 1140 mView.dispatchCollectViewAttributes(mAttachInfo, 0); 1141 mAttachInfo.mSystemUiVisibility &= ~mAttachInfo.mDisabledSystemUiVisibility; 1142 WindowManager.LayoutParams params = mWindowAttributes; 1143 mAttachInfo.mSystemUiVisibility |= getImpliedSystemUiVisibility(params); 1144 if (mAttachInfo.mKeepScreenOn != oldScreenOn 1145 || mAttachInfo.mSystemUiVisibility != params.subtreeSystemUiVisibility 1146 || mAttachInfo.mHasSystemUiListeners != params.hasSystemUiListeners) { 1147 applyKeepScreenOnFlag(params); 1148 params.subtreeSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1149 params.hasSystemUiListeners = mAttachInfo.mHasSystemUiListeners; 1150 mView.dispatchWindowSystemUiVisiblityChanged(mAttachInfo.mSystemUiVisibility); 1151 return true; 1152 } 1153 } 1154 return false; 1155 } 1156 1157 private int getImpliedSystemUiVisibility(WindowManager.LayoutParams params) { 1158 int vis = 0; 1159 // Translucent decor window flags imply stable system ui visibility. 1160 if ((params.flags & WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS) != 0) { 1161 vis |= View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN; 1162 } 1163 if ((params.flags & WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION) != 0) { 1164 vis |= View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION; 1165 } 1166 return vis; 1167 } 1168 1169 private boolean measureHierarchy(final View host, final WindowManager.LayoutParams lp, 1170 final Resources res, final int desiredWindowWidth, final int desiredWindowHeight) { 1171 int childWidthMeasureSpec; 1172 int childHeightMeasureSpec; 1173 boolean windowSizeMayChange = false; 1174 1175 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) Log.v(TAG, 1176 "Measuring " + host + " in display " + desiredWindowWidth 1177 + "x" + desiredWindowHeight + "..."); 1178 1179 boolean goodMeasure = false; 1180 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT) { 1181 // On large screens, we don't want to allow dialogs to just 1182 // stretch to fill the entire width of the screen to display 1183 // one line of text. First try doing the layout at a smaller 1184 // size to see if it will fit. 1185 final DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1186 res.getValue(com.android.internal.R.dimen.config_prefDialogWidth, mTmpValue, true); 1187 int baseSize = 0; 1188 if (mTmpValue.type == TypedValue.TYPE_DIMENSION) { 1189 baseSize = (int)mTmpValue.getDimension(packageMetrics); 1190 } 1191 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": baseSize=" + baseSize); 1192 if (baseSize != 0 && desiredWindowWidth > baseSize) { 1193 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1194 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1195 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1196 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": measured (" 1197 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1198 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1199 goodMeasure = true; 1200 } else { 1201 // Didn't fit in that size... try expanding a bit. 1202 baseSize = (baseSize+desiredWindowWidth)/2; 1203 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": next baseSize=" 1204 + baseSize); 1205 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1206 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1207 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": measured (" 1208 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1209 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1210 if (DEBUG_DIALOG) Log.v(TAG, "Good!"); 1211 goodMeasure = true; 1212 } 1213 } 1214 } 1215 } 1216 1217 if (!goodMeasure) { 1218 childWidthMeasureSpec = getRootMeasureSpec(desiredWindowWidth, lp.width); 1219 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1220 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1221 if (mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) { 1222 windowSizeMayChange = true; 1223 } 1224 } 1225 1226 if (DBG) { 1227 System.out.println("======================================"); 1228 System.out.println("performTraversals -- after measure"); 1229 host.debug(); 1230 } 1231 1232 return windowSizeMayChange; 1233 } 1234 1235 /** 1236 * Modifies the input matrix such that it maps view-local coordinates to 1237 * on-screen coordinates. 1238 * 1239 * @param m input matrix to modify 1240 */ 1241 void transformMatrixToGlobal(Matrix m) { 1242 m.preTranslate(mAttachInfo.mWindowLeft, mAttachInfo.mWindowTop); 1243 } 1244 1245 /** 1246 * Modifies the input matrix such that it maps on-screen coordinates to 1247 * view-local coordinates. 1248 * 1249 * @param m input matrix to modify 1250 */ 1251 void transformMatrixToLocal(Matrix m) { 1252 m.postTranslate(-mAttachInfo.mWindowLeft, -mAttachInfo.mWindowTop); 1253 } 1254 1255 /* package */ WindowInsets getWindowInsets(boolean forceConstruct) { 1256 if (mLastWindowInsets == null || forceConstruct) { 1257 mDispatchContentInsets.set(mAttachInfo.mContentInsets); 1258 mDispatchStableInsets.set(mAttachInfo.mStableInsets); 1259 Rect contentInsets = mDispatchContentInsets; 1260 Rect stableInsets = mDispatchStableInsets; 1261 // For dispatch we preserve old logic, but for direct requests from Views we allow to 1262 // immediately use pending insets. 1263 if (!forceConstruct 1264 && (!mPendingContentInsets.equals(contentInsets) || 1265 !mPendingStableInsets.equals(stableInsets))) { 1266 contentInsets = mPendingContentInsets; 1267 stableInsets = mPendingStableInsets; 1268 } 1269 mLastWindowInsets = new WindowInsets(contentInsets, 1270 null /* windowDecorInsets */, stableInsets, mWindowIsRound); 1271 } 1272 return mLastWindowInsets; 1273 } 1274 1275 void dispatchApplyInsets(View host) { 1276 host.dispatchApplyWindowInsets(getWindowInsets(true /* forceConstruct */)); 1277 } 1278 1279 private void performTraversals() { 1280 // cache mView since it is used so much below... 1281 final View host = mView; 1282 1283 if (DBG) { 1284 System.out.println("======================================"); 1285 System.out.println("performTraversals"); 1286 host.debug(); 1287 } 1288 1289 if (host == null || !mAdded) 1290 return; 1291 1292 mIsInTraversal = true; 1293 mWillDrawSoon = true; 1294 boolean windowSizeMayChange = false; 1295 boolean newSurface = false; 1296 boolean surfaceChanged = false; 1297 WindowManager.LayoutParams lp = mWindowAttributes; 1298 1299 int desiredWindowWidth; 1300 int desiredWindowHeight; 1301 1302 final int viewVisibility = getHostVisibility(); 1303 boolean viewVisibilityChanged = mViewVisibility != viewVisibility 1304 || mNewSurfaceNeeded; 1305 1306 WindowManager.LayoutParams params = null; 1307 if (mWindowAttributesChanged) { 1308 mWindowAttributesChanged = false; 1309 surfaceChanged = true; 1310 params = lp; 1311 } 1312 CompatibilityInfo compatibilityInfo = mDisplayAdjustments.getCompatibilityInfo(); 1313 if (compatibilityInfo.supportsScreen() == mLastInCompatMode) { 1314 params = lp; 1315 mFullRedrawNeeded = true; 1316 mLayoutRequested = true; 1317 if (mLastInCompatMode) { 1318 params.privateFlags &= ~WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 1319 mLastInCompatMode = false; 1320 } else { 1321 params.privateFlags |= WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 1322 mLastInCompatMode = true; 1323 } 1324 } 1325 1326 mWindowAttributesChangesFlag = 0; 1327 1328 Rect frame = mWinFrame; 1329 if (mFirst) { 1330 mFullRedrawNeeded = true; 1331 mLayoutRequested = true; 1332 1333 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL 1334 || lp.type == WindowManager.LayoutParams.TYPE_INPUT_METHOD) { 1335 // NOTE -- system code, won't try to do compat mode. 1336 Point size = new Point(); 1337 mDisplay.getRealSize(size); 1338 desiredWindowWidth = size.x; 1339 desiredWindowHeight = size.y; 1340 } else { 1341 DisplayMetrics packageMetrics = 1342 mView.getContext().getResources().getDisplayMetrics(); 1343 desiredWindowWidth = packageMetrics.widthPixels; 1344 desiredWindowHeight = packageMetrics.heightPixels; 1345 } 1346 1347 // We used to use the following condition to choose 32 bits drawing caches: 1348 // PixelFormat.hasAlpha(lp.format) || lp.format == PixelFormat.RGBX_8888 1349 // However, windows are now always 32 bits by default, so choose 32 bits 1350 mAttachInfo.mUse32BitDrawingCache = true; 1351 mAttachInfo.mHasWindowFocus = false; 1352 mAttachInfo.mWindowVisibility = viewVisibility; 1353 mAttachInfo.mRecomputeGlobalAttributes = false; 1354 viewVisibilityChanged = false; 1355 mLastConfiguration.setTo(host.getResources().getConfiguration()); 1356 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1357 // Set the layout direction if it has not been set before (inherit is the default) 1358 if (mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 1359 host.setLayoutDirection(mLastConfiguration.getLayoutDirection()); 1360 } 1361 host.dispatchAttachedToWindow(mAttachInfo, 0); 1362 mAttachInfo.mTreeObserver.dispatchOnWindowAttachedChange(true); 1363 dispatchApplyInsets(host); 1364 //Log.i(TAG, "Screen on initialized: " + attachInfo.mKeepScreenOn); 1365 1366 } else { 1367 desiredWindowWidth = frame.width(); 1368 desiredWindowHeight = frame.height(); 1369 if (desiredWindowWidth != mWidth || desiredWindowHeight != mHeight) { 1370 if (DEBUG_ORIENTATION) Log.v(TAG, 1371 "View " + host + " resized to: " + frame); 1372 mFullRedrawNeeded = true; 1373 mLayoutRequested = true; 1374 windowSizeMayChange = true; 1375 } 1376 } 1377 1378 if (viewVisibilityChanged) { 1379 mAttachInfo.mWindowVisibility = viewVisibility; 1380 host.dispatchWindowVisibilityChanged(viewVisibility); 1381 if (viewVisibility != View.VISIBLE || mNewSurfaceNeeded) { 1382 destroyHardwareResources(); 1383 } 1384 if (viewVisibility == View.GONE) { 1385 // After making a window gone, we will count it as being 1386 // shown for the first time the next time it gets focus. 1387 mHasHadWindowFocus = false; 1388 } 1389 } 1390 1391 // Non-visible windows can't hold accessibility focus. 1392 if (mAttachInfo.mWindowVisibility != View.VISIBLE) { 1393 host.clearAccessibilityFocus(); 1394 } 1395 1396 // Execute enqueued actions on every traversal in case a detached view enqueued an action 1397 getRunQueue().executeActions(mAttachInfo.mHandler); 1398 1399 boolean insetsChanged = false; 1400 1401 boolean layoutRequested = mLayoutRequested && (!mStopped || mReportNextDraw); 1402 if (layoutRequested) { 1403 1404 final Resources res = mView.getContext().getResources(); 1405 1406 if (mFirst) { 1407 // make sure touch mode code executes by setting cached value 1408 // to opposite of the added touch mode. 1409 mAttachInfo.mInTouchMode = !mAddedTouchMode; 1410 ensureTouchModeLocally(mAddedTouchMode); 1411 } else { 1412 if (!mPendingOverscanInsets.equals(mAttachInfo.mOverscanInsets)) { 1413 insetsChanged = true; 1414 } 1415 if (!mPendingContentInsets.equals(mAttachInfo.mContentInsets)) { 1416 insetsChanged = true; 1417 } 1418 if (!mPendingStableInsets.equals(mAttachInfo.mStableInsets)) { 1419 insetsChanged = true; 1420 } 1421 if (!mPendingVisibleInsets.equals(mAttachInfo.mVisibleInsets)) { 1422 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1423 if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: " 1424 + mAttachInfo.mVisibleInsets); 1425 } 1426 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT 1427 || lp.height == ViewGroup.LayoutParams.WRAP_CONTENT) { 1428 windowSizeMayChange = true; 1429 1430 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL 1431 || lp.type == WindowManager.LayoutParams.TYPE_INPUT_METHOD) { 1432 // NOTE -- system code, won't try to do compat mode. 1433 Point size = new Point(); 1434 mDisplay.getRealSize(size); 1435 desiredWindowWidth = size.x; 1436 desiredWindowHeight = size.y; 1437 } else { 1438 DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1439 desiredWindowWidth = packageMetrics.widthPixels; 1440 desiredWindowHeight = packageMetrics.heightPixels; 1441 } 1442 } 1443 } 1444 1445 // Ask host how big it wants to be 1446 windowSizeMayChange |= measureHierarchy(host, lp, res, 1447 desiredWindowWidth, desiredWindowHeight); 1448 } 1449 1450 if (collectViewAttributes()) { 1451 params = lp; 1452 } 1453 if (mAttachInfo.mForceReportNewAttributes) { 1454 mAttachInfo.mForceReportNewAttributes = false; 1455 params = lp; 1456 } 1457 1458 if (mFirst || mAttachInfo.mViewVisibilityChanged) { 1459 mAttachInfo.mViewVisibilityChanged = false; 1460 int resizeMode = mSoftInputMode & 1461 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST; 1462 // If we are in auto resize mode, then we need to determine 1463 // what mode to use now. 1464 if (resizeMode == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 1465 final int N = mAttachInfo.mScrollContainers.size(); 1466 for (int i=0; i<N; i++) { 1467 if (mAttachInfo.mScrollContainers.get(i).isShown()) { 1468 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE; 1469 } 1470 } 1471 if (resizeMode == 0) { 1472 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_PAN; 1473 } 1474 if ((lp.softInputMode & 1475 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) != resizeMode) { 1476 lp.softInputMode = (lp.softInputMode & 1477 ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) | 1478 resizeMode; 1479 params = lp; 1480 } 1481 } 1482 } 1483 1484 if (params != null) { 1485 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 1486 if (!PixelFormat.formatHasAlpha(params.format)) { 1487 params.format = PixelFormat.TRANSLUCENT; 1488 } 1489 } 1490 mAttachInfo.mOverscanRequested = (params.flags 1491 & WindowManager.LayoutParams.FLAG_LAYOUT_IN_OVERSCAN) != 0; 1492 } 1493 1494 if (mApplyInsetsRequested) { 1495 mApplyInsetsRequested = false; 1496 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1497 dispatchApplyInsets(host); 1498 if (mLayoutRequested) { 1499 // Short-circuit catching a new layout request here, so 1500 // we don't need to go through two layout passes when things 1501 // change due to fitting system windows, which can happen a lot. 1502 windowSizeMayChange |= measureHierarchy(host, lp, 1503 mView.getContext().getResources(), 1504 desiredWindowWidth, desiredWindowHeight); 1505 } 1506 } 1507 1508 if (layoutRequested) { 1509 // Clear this now, so that if anything requests a layout in the 1510 // rest of this function we will catch it and re-run a full 1511 // layout pass. 1512 mLayoutRequested = false; 1513 } 1514 1515 boolean windowShouldResize = layoutRequested && windowSizeMayChange 1516 && ((mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) 1517 || (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT && 1518 frame.width() < desiredWindowWidth && frame.width() != mWidth) 1519 || (lp.height == ViewGroup.LayoutParams.WRAP_CONTENT && 1520 frame.height() < desiredWindowHeight && frame.height() != mHeight)); 1521 1522 // Determine whether to compute insets. 1523 // If there are no inset listeners remaining then we may still need to compute 1524 // insets in case the old insets were non-empty and must be reset. 1525 final boolean computesInternalInsets = 1526 mAttachInfo.mTreeObserver.hasComputeInternalInsetsListeners() 1527 || mAttachInfo.mHasNonEmptyGivenInternalInsets; 1528 1529 boolean insetsPending = false; 1530 int relayoutResult = 0; 1531 1532 if (mFirst || windowShouldResize || insetsChanged || 1533 viewVisibilityChanged || params != null) { 1534 1535 if (viewVisibility == View.VISIBLE) { 1536 // If this window is giving internal insets to the window 1537 // manager, and it is being added or changing its visibility, 1538 // then we want to first give the window manager "fake" 1539 // insets to cause it to effectively ignore the content of 1540 // the window during layout. This avoids it briefly causing 1541 // other windows to resize/move based on the raw frame of the 1542 // window, waiting until we can finish laying out this window 1543 // and get back to the window manager with the ultimately 1544 // computed insets. 1545 insetsPending = computesInternalInsets && (mFirst || viewVisibilityChanged); 1546 } 1547 1548 if (mSurfaceHolder != null) { 1549 mSurfaceHolder.mSurfaceLock.lock(); 1550 mDrawingAllowed = true; 1551 } 1552 1553 boolean hwInitialized = false; 1554 boolean contentInsetsChanged = false; 1555 boolean hadSurface = mSurface.isValid(); 1556 1557 try { 1558 if (DEBUG_LAYOUT) { 1559 Log.i(TAG, "host=w:" + host.getMeasuredWidth() + ", h:" + 1560 host.getMeasuredHeight() + ", params=" + params); 1561 } 1562 1563 if (mAttachInfo.mHardwareRenderer != null) { 1564 // relayoutWindow may decide to destroy mSurface. As that decision 1565 // happens in WindowManager service, we need to be defensive here 1566 // and stop using the surface in case it gets destroyed. 1567 if (mAttachInfo.mHardwareRenderer.pauseSurface(mSurface)) { 1568 // Animations were running so we need to push a frame 1569 // to resume them 1570 mDirty.set(0, 0, mWidth, mHeight); 1571 } 1572 mChoreographer.mFrameInfo.addFlags(FrameInfo.FLAG_WINDOW_LAYOUT_CHANGED); 1573 } 1574 final int surfaceGenerationId = mSurface.getGenerationId(); 1575 relayoutResult = relayoutWindow(params, viewVisibility, insetsPending); 1576 1577 if (DEBUG_LAYOUT) Log.v(TAG, "relayout: frame=" + frame.toShortString() 1578 + " overscan=" + mPendingOverscanInsets.toShortString() 1579 + " content=" + mPendingContentInsets.toShortString() 1580 + " visible=" + mPendingVisibleInsets.toShortString() 1581 + " visible=" + mPendingStableInsets.toShortString() 1582 + " surface=" + mSurface); 1583 1584 if (mPendingConfiguration.seq != 0) { 1585 if (DEBUG_CONFIGURATION) Log.v(TAG, "Visible with new config: " 1586 + mPendingConfiguration); 1587 updateConfiguration(mPendingConfiguration, !mFirst); 1588 mPendingConfiguration.seq = 0; 1589 } 1590 1591 final boolean overscanInsetsChanged = !mPendingOverscanInsets.equals( 1592 mAttachInfo.mOverscanInsets); 1593 contentInsetsChanged = !mPendingContentInsets.equals( 1594 mAttachInfo.mContentInsets); 1595 final boolean visibleInsetsChanged = !mPendingVisibleInsets.equals( 1596 mAttachInfo.mVisibleInsets); 1597 final boolean stableInsetsChanged = !mPendingStableInsets.equals( 1598 mAttachInfo.mStableInsets); 1599 if (contentInsetsChanged) { 1600 if (mWidth > 0 && mHeight > 0 && lp != null && 1601 ((lp.systemUiVisibility|lp.subtreeSystemUiVisibility) 1602 & View.SYSTEM_UI_LAYOUT_FLAGS) == 0 && 1603 mSurface != null && mSurface.isValid() && 1604 !mAttachInfo.mTurnOffWindowResizeAnim && 1605 mAttachInfo.mHardwareRenderer != null && 1606 mAttachInfo.mHardwareRenderer.isEnabled() && 1607 lp != null && !PixelFormat.formatHasAlpha(lp.format) 1608 && !mBlockResizeBuffer) { 1609 1610 disposeResizeBuffer(); 1611 1612// TODO: Again.... 1613// if (mResizeBuffer == null) { 1614// mResizeBuffer = mAttachInfo.mHardwareRenderer.createDisplayListLayer( 1615// mWidth, mHeight); 1616// } 1617// mResizeBuffer.prepare(mWidth, mHeight, false); 1618// RenderNode layerRenderNode = mResizeBuffer.startRecording(); 1619// HardwareCanvas layerCanvas = layerRenderNode.start(mWidth, mHeight); 1620// try { 1621// final int restoreCount = layerCanvas.save(); 1622// 1623// int yoff; 1624// final boolean scrolling = mScroller != null 1625// && mScroller.computeScrollOffset(); 1626// if (scrolling) { 1627// yoff = mScroller.getCurrY(); 1628// mScroller.abortAnimation(); 1629// } else { 1630// yoff = mScrollY; 1631// } 1632// 1633// layerCanvas.translate(0, -yoff); 1634// if (mTranslator != null) { 1635// mTranslator.translateCanvas(layerCanvas); 1636// } 1637// 1638// RenderNode renderNode = mView.mRenderNode; 1639// if (renderNode != null && renderNode.isValid()) { 1640// layerCanvas.drawDisplayList(renderNode, null, 1641// RenderNode.FLAG_CLIP_CHILDREN); 1642// } else { 1643// mView.draw(layerCanvas); 1644// } 1645// 1646// drawAccessibilityFocusedDrawableIfNeeded(layerCanvas); 1647// 1648// mResizeBufferStartTime = SystemClock.uptimeMillis(); 1649// mResizeBufferDuration = mView.getResources().getInteger( 1650// com.android.internal.R.integer.config_mediumAnimTime); 1651// 1652// layerCanvas.restoreToCount(restoreCount); 1653// layerRenderNode.end(layerCanvas); 1654// layerRenderNode.setCaching(true); 1655// layerRenderNode.setLeftTopRightBottom(0, 0, mWidth, mHeight); 1656// mTempRect.set(0, 0, mWidth, mHeight); 1657// } finally { 1658// mResizeBuffer.endRecording(mTempRect); 1659// } 1660// mAttachInfo.mHardwareRenderer.flushLayerUpdates(); 1661 } 1662 mAttachInfo.mContentInsets.set(mPendingContentInsets); 1663 if (DEBUG_LAYOUT) Log.v(TAG, "Content insets changing to: " 1664 + mAttachInfo.mContentInsets); 1665 } 1666 if (overscanInsetsChanged) { 1667 mAttachInfo.mOverscanInsets.set(mPendingOverscanInsets); 1668 if (DEBUG_LAYOUT) Log.v(TAG, "Overscan insets changing to: " 1669 + mAttachInfo.mOverscanInsets); 1670 // Need to relayout with content insets. 1671 contentInsetsChanged = true; 1672 } 1673 if (stableInsetsChanged) { 1674 mAttachInfo.mStableInsets.set(mPendingStableInsets); 1675 if (DEBUG_LAYOUT) Log.v(TAG, "Decor insets changing to: " 1676 + mAttachInfo.mStableInsets); 1677 // Need to relayout with content insets. 1678 contentInsetsChanged = true; 1679 } 1680 if (contentInsetsChanged || mLastSystemUiVisibility != 1681 mAttachInfo.mSystemUiVisibility || mApplyInsetsRequested 1682 || mLastOverscanRequested != mAttachInfo.mOverscanRequested) { 1683 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1684 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1685 mApplyInsetsRequested = false; 1686 dispatchApplyInsets(host); 1687 } 1688 if (visibleInsetsChanged) { 1689 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1690 if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: " 1691 + mAttachInfo.mVisibleInsets); 1692 } 1693 1694 if (!hadSurface) { 1695 if (mSurface.isValid()) { 1696 // If we are creating a new surface, then we need to 1697 // completely redraw it. Also, when we get to the 1698 // point of drawing it we will hold off and schedule 1699 // a new traversal instead. This is so we can tell the 1700 // window manager about all of the windows being displayed 1701 // before actually drawing them, so it can display then 1702 // all at once. 1703 newSurface = true; 1704 mFullRedrawNeeded = true; 1705 mPreviousTransparentRegion.setEmpty(); 1706 1707 if (mAttachInfo.mHardwareRenderer != null) { 1708 try { 1709 hwInitialized = mAttachInfo.mHardwareRenderer.initialize( 1710 mSurface); 1711 } catch (OutOfResourcesException e) { 1712 handleOutOfResourcesException(e); 1713 return; 1714 } 1715 } 1716 } 1717 } else if (!mSurface.isValid()) { 1718 // If the surface has been removed, then reset the scroll 1719 // positions. 1720 if (mLastScrolledFocus != null) { 1721 mLastScrolledFocus.clear(); 1722 } 1723 mScrollY = mCurScrollY = 0; 1724 if (mView instanceof RootViewSurfaceTaker) { 1725 ((RootViewSurfaceTaker) mView).onRootViewScrollYChanged(mCurScrollY); 1726 } 1727 if (mScroller != null) { 1728 mScroller.abortAnimation(); 1729 } 1730 disposeResizeBuffer(); 1731 // Our surface is gone 1732 if (mAttachInfo.mHardwareRenderer != null && 1733 mAttachInfo.mHardwareRenderer.isEnabled()) { 1734 mAttachInfo.mHardwareRenderer.destroy(); 1735 } 1736 } else if (surfaceGenerationId != mSurface.getGenerationId() && 1737 mSurfaceHolder == null && mAttachInfo.mHardwareRenderer != null) { 1738 mFullRedrawNeeded = true; 1739 try { 1740 mAttachInfo.mHardwareRenderer.updateSurface(mSurface); 1741 } catch (OutOfResourcesException e) { 1742 handleOutOfResourcesException(e); 1743 return; 1744 } 1745 } 1746 } catch (RemoteException e) { 1747 } 1748 1749 if (DEBUG_ORIENTATION) Log.v( 1750 TAG, "Relayout returned: frame=" + frame + ", surface=" + mSurface); 1751 1752 mAttachInfo.mWindowLeft = frame.left; 1753 mAttachInfo.mWindowTop = frame.top; 1754 1755 // !!FIXME!! This next section handles the case where we did not get the 1756 // window size we asked for. We should avoid this by getting a maximum size from 1757 // the window session beforehand. 1758 if (mWidth != frame.width() || mHeight != frame.height()) { 1759 mWidth = frame.width(); 1760 mHeight = frame.height(); 1761 } 1762 1763 if (mSurfaceHolder != null) { 1764 // The app owns the surface; tell it about what is going on. 1765 if (mSurface.isValid()) { 1766 // XXX .copyFrom() doesn't work! 1767 //mSurfaceHolder.mSurface.copyFrom(mSurface); 1768 mSurfaceHolder.mSurface = mSurface; 1769 } 1770 mSurfaceHolder.setSurfaceFrameSize(mWidth, mHeight); 1771 mSurfaceHolder.mSurfaceLock.unlock(); 1772 if (mSurface.isValid()) { 1773 if (!hadSurface) { 1774 mSurfaceHolder.ungetCallbacks(); 1775 1776 mIsCreating = true; 1777 mSurfaceHolderCallback.surfaceCreated(mSurfaceHolder); 1778 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1779 if (callbacks != null) { 1780 for (SurfaceHolder.Callback c : callbacks) { 1781 c.surfaceCreated(mSurfaceHolder); 1782 } 1783 } 1784 surfaceChanged = true; 1785 } 1786 if (surfaceChanged) { 1787 mSurfaceHolderCallback.surfaceChanged(mSurfaceHolder, 1788 lp.format, mWidth, mHeight); 1789 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1790 if (callbacks != null) { 1791 for (SurfaceHolder.Callback c : callbacks) { 1792 c.surfaceChanged(mSurfaceHolder, lp.format, 1793 mWidth, mHeight); 1794 } 1795 } 1796 } 1797 mIsCreating = false; 1798 } else if (hadSurface) { 1799 mSurfaceHolder.ungetCallbacks(); 1800 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1801 mSurfaceHolderCallback.surfaceDestroyed(mSurfaceHolder); 1802 if (callbacks != null) { 1803 for (SurfaceHolder.Callback c : callbacks) { 1804 c.surfaceDestroyed(mSurfaceHolder); 1805 } 1806 } 1807 mSurfaceHolder.mSurfaceLock.lock(); 1808 try { 1809 mSurfaceHolder.mSurface = new Surface(); 1810 } finally { 1811 mSurfaceHolder.mSurfaceLock.unlock(); 1812 } 1813 } 1814 } 1815 1816 if (mAttachInfo.mHardwareRenderer != null && 1817 mAttachInfo.mHardwareRenderer.isEnabled()) { 1818 if (hwInitialized || 1819 mWidth != mAttachInfo.mHardwareRenderer.getWidth() || 1820 mHeight != mAttachInfo.mHardwareRenderer.getHeight()) { 1821 mAttachInfo.mHardwareRenderer.setup( 1822 mWidth, mHeight, mWindowAttributes.surfaceInsets); 1823 if (!hwInitialized) { 1824 mAttachInfo.mHardwareRenderer.invalidate(mSurface); 1825 mFullRedrawNeeded = true; 1826 } 1827 } 1828 } 1829 1830 if (!mStopped || mReportNextDraw) { 1831 boolean focusChangedDueToTouchMode = ensureTouchModeLocally( 1832 (relayoutResult&WindowManagerGlobal.RELAYOUT_RES_IN_TOUCH_MODE) != 0); 1833 if (focusChangedDueToTouchMode || mWidth != host.getMeasuredWidth() 1834 || mHeight != host.getMeasuredHeight() || contentInsetsChanged) { 1835 int childWidthMeasureSpec = getRootMeasureSpec(mWidth, lp.width); 1836 int childHeightMeasureSpec = getRootMeasureSpec(mHeight, lp.height); 1837 1838 if (DEBUG_LAYOUT) Log.v(TAG, "Ooops, something changed! mWidth=" 1839 + mWidth + " measuredWidth=" + host.getMeasuredWidth() 1840 + " mHeight=" + mHeight 1841 + " measuredHeight=" + host.getMeasuredHeight() 1842 + " coveredInsetsChanged=" + contentInsetsChanged); 1843 1844 // Ask host how big it wants to be 1845 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1846 1847 // Implementation of weights from WindowManager.LayoutParams 1848 // We just grow the dimensions as needed and re-measure if 1849 // needs be 1850 int width = host.getMeasuredWidth(); 1851 int height = host.getMeasuredHeight(); 1852 boolean measureAgain = false; 1853 1854 if (lp.horizontalWeight > 0.0f) { 1855 width += (int) ((mWidth - width) * lp.horizontalWeight); 1856 childWidthMeasureSpec = MeasureSpec.makeMeasureSpec(width, 1857 MeasureSpec.EXACTLY); 1858 measureAgain = true; 1859 } 1860 if (lp.verticalWeight > 0.0f) { 1861 height += (int) ((mHeight - height) * lp.verticalWeight); 1862 childHeightMeasureSpec = MeasureSpec.makeMeasureSpec(height, 1863 MeasureSpec.EXACTLY); 1864 measureAgain = true; 1865 } 1866 1867 if (measureAgain) { 1868 if (DEBUG_LAYOUT) Log.v(TAG, 1869 "And hey let's measure once more: width=" + width 1870 + " height=" + height); 1871 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1872 } 1873 1874 layoutRequested = true; 1875 } 1876 } 1877 } else { 1878 // Not the first pass and no window/insets/visibility change but the window 1879 // may have moved and we need check that and if so to update the left and right 1880 // in the attach info. We translate only the window frame since on window move 1881 // the window manager tells us only for the new frame but the insets are the 1882 // same and we do not want to translate them more than once. 1883 1884 // TODO: Well, we are checking whether the frame has changed similarly 1885 // to how this is done for the insets. This is however incorrect since 1886 // the insets and the frame are translated. For example, the old frame 1887 // was (1, 1 - 1, 1) and was translated to say (2, 2 - 2, 2), now the new 1888 // reported frame is (2, 2 - 2, 2) which implies no change but this is not 1889 // true since we are comparing a not translated value to a translated one. 1890 // This scenario is rare but we may want to fix that. 1891 1892 final boolean windowMoved = (mAttachInfo.mWindowLeft != frame.left 1893 || mAttachInfo.mWindowTop != frame.top); 1894 if (windowMoved) { 1895 if (mTranslator != null) { 1896 mTranslator.translateRectInScreenToAppWinFrame(frame); 1897 } 1898 mAttachInfo.mWindowLeft = frame.left; 1899 mAttachInfo.mWindowTop = frame.top; 1900 } 1901 } 1902 1903 final boolean didLayout = layoutRequested && (!mStopped || mReportNextDraw); 1904 boolean triggerGlobalLayoutListener = didLayout 1905 || mAttachInfo.mRecomputeGlobalAttributes; 1906 if (didLayout) { 1907 performLayout(lp, desiredWindowWidth, desiredWindowHeight); 1908 1909 // By this point all views have been sized and positioned 1910 // We can compute the transparent area 1911 1912 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 1913 // start out transparent 1914 // TODO: AVOID THAT CALL BY CACHING THE RESULT? 1915 host.getLocationInWindow(mTmpLocation); 1916 mTransparentRegion.set(mTmpLocation[0], mTmpLocation[1], 1917 mTmpLocation[0] + host.mRight - host.mLeft, 1918 mTmpLocation[1] + host.mBottom - host.mTop); 1919 1920 host.gatherTransparentRegion(mTransparentRegion); 1921 if (mTranslator != null) { 1922 mTranslator.translateRegionInWindowToScreen(mTransparentRegion); 1923 } 1924 1925 if (!mTransparentRegion.equals(mPreviousTransparentRegion)) { 1926 mPreviousTransparentRegion.set(mTransparentRegion); 1927 mFullRedrawNeeded = true; 1928 // reconfigure window manager 1929 try { 1930 mWindowSession.setTransparentRegion(mWindow, mTransparentRegion); 1931 } catch (RemoteException e) { 1932 } 1933 } 1934 } 1935 1936 if (DBG) { 1937 System.out.println("======================================"); 1938 System.out.println("performTraversals -- after setFrame"); 1939 host.debug(); 1940 } 1941 } 1942 1943 if (triggerGlobalLayoutListener) { 1944 mAttachInfo.mRecomputeGlobalAttributes = false; 1945 mAttachInfo.mTreeObserver.dispatchOnGlobalLayout(); 1946 } 1947 1948 if (computesInternalInsets) { 1949 // Clear the original insets. 1950 final ViewTreeObserver.InternalInsetsInfo insets = mAttachInfo.mGivenInternalInsets; 1951 insets.reset(); 1952 1953 // Compute new insets in place. 1954 mAttachInfo.mTreeObserver.dispatchOnComputeInternalInsets(insets); 1955 mAttachInfo.mHasNonEmptyGivenInternalInsets = !insets.isEmpty(); 1956 1957 // Tell the window manager. 1958 if (insetsPending || !mLastGivenInsets.equals(insets)) { 1959 mLastGivenInsets.set(insets); 1960 1961 // Translate insets to screen coordinates if needed. 1962 final Rect contentInsets; 1963 final Rect visibleInsets; 1964 final Region touchableRegion; 1965 if (mTranslator != null) { 1966 contentInsets = mTranslator.getTranslatedContentInsets(insets.contentInsets); 1967 visibleInsets = mTranslator.getTranslatedVisibleInsets(insets.visibleInsets); 1968 touchableRegion = mTranslator.getTranslatedTouchableArea(insets.touchableRegion); 1969 } else { 1970 contentInsets = insets.contentInsets; 1971 visibleInsets = insets.visibleInsets; 1972 touchableRegion = insets.touchableRegion; 1973 } 1974 1975 try { 1976 mWindowSession.setInsets(mWindow, insets.mTouchableInsets, 1977 contentInsets, visibleInsets, touchableRegion); 1978 } catch (RemoteException e) { 1979 } 1980 } 1981 } 1982 1983 boolean skipDraw = false; 1984 1985 if (mFirst) { 1986 // handle first focus request 1987 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: mView.hasFocus()=" 1988 + mView.hasFocus()); 1989 if (mView != null) { 1990 if (!mView.hasFocus()) { 1991 mView.requestFocus(View.FOCUS_FORWARD); 1992 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: requested focused view=" 1993 + mView.findFocus()); 1994 } else { 1995 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: existing focused view=" 1996 + mView.findFocus()); 1997 } 1998 } 1999 } else if (mWindowsAnimating) { 2000 if (mRemainingFrameCount <= 0) { 2001 skipDraw = true; 2002 } 2003 mRemainingFrameCount--; 2004 } 2005 2006 mFirst = false; 2007 mWillDrawSoon = false; 2008 mNewSurfaceNeeded = false; 2009 mViewVisibility = viewVisibility; 2010 2011 if (mAttachInfo.mHasWindowFocus && !isInLocalFocusMode()) { 2012 final boolean imTarget = WindowManager.LayoutParams 2013 .mayUseInputMethod(mWindowAttributes.flags); 2014 if (imTarget != mLastWasImTarget) { 2015 mLastWasImTarget = imTarget; 2016 InputMethodManager imm = InputMethodManager.peekInstance(); 2017 if (imm != null && imTarget) { 2018 imm.onPreWindowFocus(mView, true /* hasWindowFocus */); 2019 imm.onPostWindowFocus(mView, mView.findFocus(), 2020 mWindowAttributes.softInputMode, 2021 !mHasHadWindowFocus, mWindowAttributes.flags); 2022 } 2023 } 2024 } 2025 2026 // Remember if we must report the next draw. 2027 if ((relayoutResult & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 2028 mReportNextDraw = true; 2029 } 2030 2031 boolean cancelDraw = mAttachInfo.mTreeObserver.dispatchOnPreDraw() || 2032 viewVisibility != View.VISIBLE; 2033 2034 if (!cancelDraw && !newSurface) { 2035 if (!skipDraw || mReportNextDraw) { 2036 if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 2037 for (int i = 0; i < mPendingTransitions.size(); ++i) { 2038 mPendingTransitions.get(i).startChangingAnimations(); 2039 } 2040 mPendingTransitions.clear(); 2041 } 2042 2043 performDraw(); 2044 } 2045 } else { 2046 if (viewVisibility == View.VISIBLE) { 2047 // Try again 2048 scheduleTraversals(); 2049 } else if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 2050 for (int i = 0; i < mPendingTransitions.size(); ++i) { 2051 mPendingTransitions.get(i).endChangingAnimations(); 2052 } 2053 mPendingTransitions.clear(); 2054 } 2055 } 2056 2057 mIsInTraversal = false; 2058 } 2059 2060 private void handleOutOfResourcesException(Surface.OutOfResourcesException e) { 2061 Log.e(TAG, "OutOfResourcesException initializing HW surface", e); 2062 try { 2063 if (!mWindowSession.outOfMemory(mWindow) && 2064 Process.myUid() != Process.SYSTEM_UID) { 2065 Slog.w(TAG, "No processes killed for memory; killing self"); 2066 Process.killProcess(Process.myPid()); 2067 } 2068 } catch (RemoteException ex) { 2069 } 2070 mLayoutRequested = true; // ask wm for a new surface next time. 2071 } 2072 2073 private void performMeasure(int childWidthMeasureSpec, int childHeightMeasureSpec) { 2074 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "measure"); 2075 try { 2076 mView.measure(childWidthMeasureSpec, childHeightMeasureSpec); 2077 } finally { 2078 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2079 } 2080 } 2081 2082 /** 2083 * Called by {@link android.view.View#isInLayout()} to determine whether the view hierarchy 2084 * is currently undergoing a layout pass. 2085 * 2086 * @return whether the view hierarchy is currently undergoing a layout pass 2087 */ 2088 boolean isInLayout() { 2089 return mInLayout; 2090 } 2091 2092 /** 2093 * Called by {@link android.view.View#requestLayout()} if the view hierarchy is currently 2094 * undergoing a layout pass. requestLayout() should not generally be called during layout, 2095 * unless the container hierarchy knows what it is doing (i.e., it is fine as long as 2096 * all children in that container hierarchy are measured and laid out at the end of the layout 2097 * pass for that container). If requestLayout() is called anyway, we handle it correctly 2098 * by registering all requesters during a frame as it proceeds. At the end of the frame, 2099 * we check all of those views to see if any still have pending layout requests, which 2100 * indicates that they were not correctly handled by their container hierarchy. If that is 2101 * the case, we clear all such flags in the tree, to remove the buggy flag state that leads 2102 * to blank containers, and force a second request/measure/layout pass in this frame. If 2103 * more requestLayout() calls are received during that second layout pass, we post those 2104 * requests to the next frame to avoid possible infinite loops. 2105 * 2106 * <p>The return value from this method indicates whether the request should proceed 2107 * (if it is a request during the first layout pass) or should be skipped and posted to the 2108 * next frame (if it is a request during the second layout pass).</p> 2109 * 2110 * @param view the view that requested the layout. 2111 * 2112 * @return true if request should proceed, false otherwise. 2113 */ 2114 boolean requestLayoutDuringLayout(final View view) { 2115 if (view.mParent == null || view.mAttachInfo == null) { 2116 // Would not normally trigger another layout, so just let it pass through as usual 2117 return true; 2118 } 2119 if (!mLayoutRequesters.contains(view)) { 2120 mLayoutRequesters.add(view); 2121 } 2122 if (!mHandlingLayoutInLayoutRequest) { 2123 // Let the request proceed normally; it will be processed in a second layout pass 2124 // if necessary 2125 return true; 2126 } else { 2127 // Don't let the request proceed during the second layout pass. 2128 // It will post to the next frame instead. 2129 return false; 2130 } 2131 } 2132 2133 private void performLayout(WindowManager.LayoutParams lp, int desiredWindowWidth, 2134 int desiredWindowHeight) { 2135 mLayoutRequested = false; 2136 mScrollMayChange = true; 2137 mInLayout = true; 2138 2139 final View host = mView; 2140 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) { 2141 Log.v(TAG, "Laying out " + host + " to (" + 2142 host.getMeasuredWidth() + ", " + host.getMeasuredHeight() + ")"); 2143 } 2144 2145 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "layout"); 2146 try { 2147 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 2148 2149 mInLayout = false; 2150 int numViewsRequestingLayout = mLayoutRequesters.size(); 2151 if (numViewsRequestingLayout > 0) { 2152 // requestLayout() was called during layout. 2153 // If no layout-request flags are set on the requesting views, there is no problem. 2154 // If some requests are still pending, then we need to clear those flags and do 2155 // a full request/measure/layout pass to handle this situation. 2156 ArrayList<View> validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, 2157 false); 2158 if (validLayoutRequesters != null) { 2159 // Set this flag to indicate that any further requests are happening during 2160 // the second pass, which may result in posting those requests to the next 2161 // frame instead 2162 mHandlingLayoutInLayoutRequest = true; 2163 2164 // Process fresh layout requests, then measure and layout 2165 int numValidRequests = validLayoutRequesters.size(); 2166 for (int i = 0; i < numValidRequests; ++i) { 2167 final View view = validLayoutRequesters.get(i); 2168 Log.w("View", "requestLayout() improperly called by " + view + 2169 " during layout: running second layout pass"); 2170 view.requestLayout(); 2171 } 2172 measureHierarchy(host, lp, mView.getContext().getResources(), 2173 desiredWindowWidth, desiredWindowHeight); 2174 mInLayout = true; 2175 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 2176 2177 mHandlingLayoutInLayoutRequest = false; 2178 2179 // Check the valid requests again, this time without checking/clearing the 2180 // layout flags, since requests happening during the second pass get noop'd 2181 validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, true); 2182 if (validLayoutRequesters != null) { 2183 final ArrayList<View> finalRequesters = validLayoutRequesters; 2184 // Post second-pass requests to the next frame 2185 getRunQueue().post(new Runnable() { 2186 @Override 2187 public void run() { 2188 int numValidRequests = finalRequesters.size(); 2189 for (int i = 0; i < numValidRequests; ++i) { 2190 final View view = finalRequesters.get(i); 2191 Log.w("View", "requestLayout() improperly called by " + view + 2192 " during second layout pass: posting in next frame"); 2193 view.requestLayout(); 2194 } 2195 } 2196 }); 2197 } 2198 } 2199 2200 } 2201 } finally { 2202 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2203 } 2204 mInLayout = false; 2205 } 2206 2207 /** 2208 * This method is called during layout when there have been calls to requestLayout() during 2209 * layout. It walks through the list of views that requested layout to determine which ones 2210 * still need it, based on visibility in the hierarchy and whether they have already been 2211 * handled (as is usually the case with ListView children). 2212 * 2213 * @param layoutRequesters The list of views that requested layout during layout 2214 * @param secondLayoutRequests Whether the requests were issued during the second layout pass. 2215 * If so, the FORCE_LAYOUT flag was not set on requesters. 2216 * @return A list of the actual views that still need to be laid out. 2217 */ 2218 private ArrayList<View> getValidLayoutRequesters(ArrayList<View> layoutRequesters, 2219 boolean secondLayoutRequests) { 2220 2221 int numViewsRequestingLayout = layoutRequesters.size(); 2222 ArrayList<View> validLayoutRequesters = null; 2223 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2224 View view = layoutRequesters.get(i); 2225 if (view != null && view.mAttachInfo != null && view.mParent != null && 2226 (secondLayoutRequests || (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) == 2227 View.PFLAG_FORCE_LAYOUT)) { 2228 boolean gone = false; 2229 View parent = view; 2230 // Only trigger new requests for views in a non-GONE hierarchy 2231 while (parent != null) { 2232 if ((parent.mViewFlags & View.VISIBILITY_MASK) == View.GONE) { 2233 gone = true; 2234 break; 2235 } 2236 if (parent.mParent instanceof View) { 2237 parent = (View) parent.mParent; 2238 } else { 2239 parent = null; 2240 } 2241 } 2242 if (!gone) { 2243 if (validLayoutRequesters == null) { 2244 validLayoutRequesters = new ArrayList<View>(); 2245 } 2246 validLayoutRequesters.add(view); 2247 } 2248 } 2249 } 2250 if (!secondLayoutRequests) { 2251 // If we're checking the layout flags, then we need to clean them up also 2252 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2253 View view = layoutRequesters.get(i); 2254 while (view != null && 2255 (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) != 0) { 2256 view.mPrivateFlags &= ~View.PFLAG_FORCE_LAYOUT; 2257 if (view.mParent instanceof View) { 2258 view = (View) view.mParent; 2259 } else { 2260 view = null; 2261 } 2262 } 2263 } 2264 } 2265 layoutRequesters.clear(); 2266 return validLayoutRequesters; 2267 } 2268 2269 @Override 2270 public void requestTransparentRegion(View child) { 2271 // the test below should not fail unless someone is messing with us 2272 checkThread(); 2273 if (mView == child) { 2274 mView.mPrivateFlags |= View.PFLAG_REQUEST_TRANSPARENT_REGIONS; 2275 // Need to make sure we re-evaluate the window attributes next 2276 // time around, to ensure the window has the correct format. 2277 mWindowAttributesChanged = true; 2278 mWindowAttributesChangesFlag = 0; 2279 requestLayout(); 2280 } 2281 } 2282 2283 /** 2284 * Figures out the measure spec for the root view in a window based on it's 2285 * layout params. 2286 * 2287 * @param windowSize 2288 * The available width or height of the window 2289 * 2290 * @param rootDimension 2291 * The layout params for one dimension (width or height) of the 2292 * window. 2293 * 2294 * @return The measure spec to use to measure the root view. 2295 */ 2296 private static int getRootMeasureSpec(int windowSize, int rootDimension) { 2297 int measureSpec; 2298 switch (rootDimension) { 2299 2300 case ViewGroup.LayoutParams.MATCH_PARENT: 2301 // Window can't resize. Force root view to be windowSize. 2302 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.EXACTLY); 2303 break; 2304 case ViewGroup.LayoutParams.WRAP_CONTENT: 2305 // Window can resize. Set max size for root view. 2306 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.AT_MOST); 2307 break; 2308 default: 2309 // Window wants to be an exact size. Force root view to be that size. 2310 measureSpec = MeasureSpec.makeMeasureSpec(rootDimension, MeasureSpec.EXACTLY); 2311 break; 2312 } 2313 return measureSpec; 2314 } 2315 2316 int mHardwareXOffset; 2317 int mHardwareYOffset; 2318 int mResizeAlpha; 2319 final Paint mResizePaint = new Paint(); 2320 2321 @Override 2322 public void onHardwarePreDraw(DisplayListCanvas canvas) { 2323 canvas.translate(-mHardwareXOffset, -mHardwareYOffset); 2324 } 2325 2326 @Override 2327 public void onHardwarePostDraw(DisplayListCanvas canvas) { 2328 if (mResizeBuffer != null) { 2329 mResizePaint.setAlpha(mResizeAlpha); 2330 canvas.drawHardwareLayer(mResizeBuffer, mHardwareXOffset, mHardwareYOffset, 2331 mResizePaint); 2332 } 2333 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2334 } 2335 2336 /** 2337 * @hide 2338 */ 2339 void outputDisplayList(View view) { 2340 RenderNode renderNode = view.updateDisplayListIfDirty(); 2341 renderNode.output(); 2342 } 2343 2344 /** 2345 * @see #PROPERTY_PROFILE_RENDERING 2346 */ 2347 private void profileRendering(boolean enabled) { 2348 if (mProfileRendering) { 2349 mRenderProfilingEnabled = enabled; 2350 2351 if (mRenderProfiler != null) { 2352 mChoreographer.removeFrameCallback(mRenderProfiler); 2353 } 2354 if (mRenderProfilingEnabled) { 2355 if (mRenderProfiler == null) { 2356 mRenderProfiler = new Choreographer.FrameCallback() { 2357 @Override 2358 public void doFrame(long frameTimeNanos) { 2359 mDirty.set(0, 0, mWidth, mHeight); 2360 scheduleTraversals(); 2361 if (mRenderProfilingEnabled) { 2362 mChoreographer.postFrameCallback(mRenderProfiler); 2363 } 2364 } 2365 }; 2366 } 2367 mChoreographer.postFrameCallback(mRenderProfiler); 2368 } else { 2369 mRenderProfiler = null; 2370 } 2371 } 2372 } 2373 2374 /** 2375 * Called from draw() when DEBUG_FPS is enabled 2376 */ 2377 private void trackFPS() { 2378 // Tracks frames per second drawn. First value in a series of draws may be bogus 2379 // because it down not account for the intervening idle time 2380 long nowTime = System.currentTimeMillis(); 2381 if (mFpsStartTime < 0) { 2382 mFpsStartTime = mFpsPrevTime = nowTime; 2383 mFpsNumFrames = 0; 2384 } else { 2385 ++mFpsNumFrames; 2386 String thisHash = Integer.toHexString(System.identityHashCode(this)); 2387 long frameTime = nowTime - mFpsPrevTime; 2388 long totalTime = nowTime - mFpsStartTime; 2389 Log.v(TAG, "0x" + thisHash + "\tFrame time:\t" + frameTime); 2390 mFpsPrevTime = nowTime; 2391 if (totalTime > 1000) { 2392 float fps = (float) mFpsNumFrames * 1000 / totalTime; 2393 Log.v(TAG, "0x" + thisHash + "\tFPS:\t" + fps); 2394 mFpsStartTime = nowTime; 2395 mFpsNumFrames = 0; 2396 } 2397 } 2398 } 2399 2400 private void performDraw() { 2401 if (mAttachInfo.mDisplayState == Display.STATE_OFF && !mReportNextDraw) { 2402 return; 2403 } 2404 2405 final boolean fullRedrawNeeded = mFullRedrawNeeded; 2406 mFullRedrawNeeded = false; 2407 2408 mIsDrawing = true; 2409 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "draw"); 2410 try { 2411 draw(fullRedrawNeeded); 2412 } finally { 2413 mIsDrawing = false; 2414 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2415 } 2416 2417 // For whatever reason we didn't create a HardwareRenderer, end any 2418 // hardware animations that are now dangling 2419 if (mAttachInfo.mPendingAnimatingRenderNodes != null) { 2420 final int count = mAttachInfo.mPendingAnimatingRenderNodes.size(); 2421 for (int i = 0; i < count; i++) { 2422 mAttachInfo.mPendingAnimatingRenderNodes.get(i).endAllAnimators(); 2423 } 2424 mAttachInfo.mPendingAnimatingRenderNodes.clear(); 2425 } 2426 2427 if (mReportNextDraw) { 2428 mReportNextDraw = false; 2429 if (mAttachInfo.mHardwareRenderer != null) { 2430 mAttachInfo.mHardwareRenderer.fence(); 2431 } 2432 2433 if (LOCAL_LOGV) { 2434 Log.v(TAG, "FINISHED DRAWING: " + mWindowAttributes.getTitle()); 2435 } 2436 if (mSurfaceHolder != null && mSurface.isValid()) { 2437 mSurfaceHolderCallback.surfaceRedrawNeeded(mSurfaceHolder); 2438 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 2439 if (callbacks != null) { 2440 for (SurfaceHolder.Callback c : callbacks) { 2441 if (c instanceof SurfaceHolder.Callback2) { 2442 ((SurfaceHolder.Callback2)c).surfaceRedrawNeeded( 2443 mSurfaceHolder); 2444 } 2445 } 2446 } 2447 } 2448 try { 2449 mWindowSession.finishDrawing(mWindow); 2450 } catch (RemoteException e) { 2451 } 2452 } 2453 } 2454 2455 private void draw(boolean fullRedrawNeeded) { 2456 Surface surface = mSurface; 2457 if (!surface.isValid()) { 2458 return; 2459 } 2460 2461 if (DEBUG_FPS) { 2462 trackFPS(); 2463 } 2464 2465 if (!sFirstDrawComplete) { 2466 synchronized (sFirstDrawHandlers) { 2467 sFirstDrawComplete = true; 2468 final int count = sFirstDrawHandlers.size(); 2469 for (int i = 0; i< count; i++) { 2470 mHandler.post(sFirstDrawHandlers.get(i)); 2471 } 2472 } 2473 } 2474 2475 scrollToRectOrFocus(null, false); 2476 2477 if (mAttachInfo.mViewScrollChanged) { 2478 mAttachInfo.mViewScrollChanged = false; 2479 mAttachInfo.mTreeObserver.dispatchOnScrollChanged(); 2480 } 2481 2482 boolean animating = mScroller != null && mScroller.computeScrollOffset(); 2483 final int curScrollY; 2484 if (animating) { 2485 curScrollY = mScroller.getCurrY(); 2486 } else { 2487 curScrollY = mScrollY; 2488 } 2489 if (mCurScrollY != curScrollY) { 2490 mCurScrollY = curScrollY; 2491 fullRedrawNeeded = true; 2492 if (mView instanceof RootViewSurfaceTaker) { 2493 ((RootViewSurfaceTaker) mView).onRootViewScrollYChanged(mCurScrollY); 2494 } 2495 } 2496 2497 final float appScale = mAttachInfo.mApplicationScale; 2498 final boolean scalingRequired = mAttachInfo.mScalingRequired; 2499 2500 int resizeAlpha = 0; 2501 if (mResizeBuffer != null) { 2502 long deltaTime = SystemClock.uptimeMillis() - mResizeBufferStartTime; 2503 if (deltaTime < mResizeBufferDuration) { 2504 float amt = deltaTime/(float) mResizeBufferDuration; 2505 amt = mResizeInterpolator.getInterpolation(amt); 2506 animating = true; 2507 resizeAlpha = 255 - (int)(amt*255); 2508 } else { 2509 disposeResizeBuffer(); 2510 } 2511 } 2512 2513 final Rect dirty = mDirty; 2514 if (mSurfaceHolder != null) { 2515 // The app owns the surface, we won't draw. 2516 dirty.setEmpty(); 2517 if (animating) { 2518 if (mScroller != null) { 2519 mScroller.abortAnimation(); 2520 } 2521 disposeResizeBuffer(); 2522 } 2523 return; 2524 } 2525 2526 if (fullRedrawNeeded) { 2527 mAttachInfo.mIgnoreDirtyState = true; 2528 dirty.set(0, 0, (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 2529 } 2530 2531 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2532 Log.v(TAG, "Draw " + mView + "/" 2533 + mWindowAttributes.getTitle() 2534 + ": dirty={" + dirty.left + "," + dirty.top 2535 + "," + dirty.right + "," + dirty.bottom + "} surface=" 2536 + surface + " surface.isValid()=" + surface.isValid() + ", appScale:" + 2537 appScale + ", width=" + mWidth + ", height=" + mHeight); 2538 } 2539 2540 mAttachInfo.mTreeObserver.dispatchOnDraw(); 2541 2542 int xOffset = 0; 2543 int yOffset = curScrollY; 2544 final WindowManager.LayoutParams params = mWindowAttributes; 2545 final Rect surfaceInsets = params != null ? params.surfaceInsets : null; 2546 if (surfaceInsets != null) { 2547 xOffset -= surfaceInsets.left; 2548 yOffset -= surfaceInsets.top; 2549 2550 // Offset dirty rect for surface insets. 2551 dirty.offset(surfaceInsets.left, surfaceInsets.right); 2552 } 2553 2554 boolean accessibilityFocusDirty = false; 2555 final Drawable drawable = mAttachInfo.mAccessibilityFocusDrawable; 2556 if (drawable != null) { 2557 final Rect bounds = mAttachInfo.mTmpInvalRect; 2558 final boolean hasFocus = getAccessibilityFocusedRect(bounds); 2559 if (!hasFocus) { 2560 bounds.setEmpty(); 2561 } 2562 if (!bounds.equals(drawable.getBounds())) { 2563 accessibilityFocusDirty = true; 2564 } 2565 } 2566 2567 mAttachInfo.mDrawingTime = 2568 mChoreographer.getFrameTimeNanos() / TimeUtils.NANOS_PER_MS; 2569 2570 if (!dirty.isEmpty() || mIsAnimating || accessibilityFocusDirty) { 2571 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled()) { 2572 // If accessibility focus moved, always invalidate the root. 2573 boolean invalidateRoot = accessibilityFocusDirty; 2574 2575 // Draw with hardware renderer. 2576 mIsAnimating = false; 2577 2578 if (mHardwareYOffset != yOffset || mHardwareXOffset != xOffset) { 2579 mHardwareYOffset = yOffset; 2580 mHardwareXOffset = xOffset; 2581 invalidateRoot = true; 2582 } 2583 mResizeAlpha = resizeAlpha; 2584 2585 if (invalidateRoot) { 2586 mAttachInfo.mHardwareRenderer.invalidateRoot(); 2587 } 2588 2589 dirty.setEmpty(); 2590 2591 mBlockResizeBuffer = false; 2592 mAttachInfo.mHardwareRenderer.draw(mView, mAttachInfo, this); 2593 } else { 2594 // If we get here with a disabled & requested hardware renderer, something went 2595 // wrong (an invalidate posted right before we destroyed the hardware surface 2596 // for instance) so we should just bail out. Locking the surface with software 2597 // rendering at this point would lock it forever and prevent hardware renderer 2598 // from doing its job when it comes back. 2599 // Before we request a new frame we must however attempt to reinitiliaze the 2600 // hardware renderer if it's in requested state. This would happen after an 2601 // eglTerminate() for instance. 2602 if (mAttachInfo.mHardwareRenderer != null && 2603 !mAttachInfo.mHardwareRenderer.isEnabled() && 2604 mAttachInfo.mHardwareRenderer.isRequested()) { 2605 2606 try { 2607 mAttachInfo.mHardwareRenderer.initializeIfNeeded( 2608 mWidth, mHeight, mSurface, surfaceInsets); 2609 } catch (OutOfResourcesException e) { 2610 handleOutOfResourcesException(e); 2611 return; 2612 } 2613 2614 mFullRedrawNeeded = true; 2615 scheduleTraversals(); 2616 return; 2617 } 2618 2619 if (!drawSoftware(surface, mAttachInfo, xOffset, yOffset, scalingRequired, dirty)) { 2620 return; 2621 } 2622 } 2623 } 2624 2625 if (animating) { 2626 mFullRedrawNeeded = true; 2627 scheduleTraversals(); 2628 } 2629 } 2630 2631 /** 2632 * @return true if drawing was successful, false if an error occurred 2633 */ 2634 private boolean drawSoftware(Surface surface, AttachInfo attachInfo, int xoff, int yoff, 2635 boolean scalingRequired, Rect dirty) { 2636 2637 // Draw with software renderer. 2638 final Canvas canvas; 2639 try { 2640 final int left = dirty.left; 2641 final int top = dirty.top; 2642 final int right = dirty.right; 2643 final int bottom = dirty.bottom; 2644 2645 canvas = mSurface.lockCanvas(dirty); 2646 2647 // The dirty rectangle can be modified by Surface.lockCanvas() 2648 //noinspection ConstantConditions 2649 if (left != dirty.left || top != dirty.top || right != dirty.right 2650 || bottom != dirty.bottom) { 2651 attachInfo.mIgnoreDirtyState = true; 2652 } 2653 2654 // TODO: Do this in native 2655 canvas.setDensity(mDensity); 2656 } catch (Surface.OutOfResourcesException e) { 2657 handleOutOfResourcesException(e); 2658 return false; 2659 } catch (IllegalArgumentException e) { 2660 Log.e(TAG, "Could not lock surface", e); 2661 // Don't assume this is due to out of memory, it could be 2662 // something else, and if it is something else then we could 2663 // kill stuff (or ourself) for no reason. 2664 mLayoutRequested = true; // ask wm for a new surface next time. 2665 return false; 2666 } 2667 2668 try { 2669 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2670 Log.v(TAG, "Surface " + surface + " drawing to bitmap w=" 2671 + canvas.getWidth() + ", h=" + canvas.getHeight()); 2672 //canvas.drawARGB(255, 255, 0, 0); 2673 } 2674 2675 // If this bitmap's format includes an alpha channel, we 2676 // need to clear it before drawing so that the child will 2677 // properly re-composite its drawing on a transparent 2678 // background. This automatically respects the clip/dirty region 2679 // or 2680 // If we are applying an offset, we need to clear the area 2681 // where the offset doesn't appear to avoid having garbage 2682 // left in the blank areas. 2683 if (!canvas.isOpaque() || yoff != 0 || xoff != 0) { 2684 canvas.drawColor(0, PorterDuff.Mode.CLEAR); 2685 } 2686 2687 dirty.setEmpty(); 2688 mIsAnimating = false; 2689 mView.mPrivateFlags |= View.PFLAG_DRAWN; 2690 2691 if (DEBUG_DRAW) { 2692 Context cxt = mView.getContext(); 2693 Log.i(TAG, "Drawing: package:" + cxt.getPackageName() + 2694 ", metrics=" + cxt.getResources().getDisplayMetrics() + 2695 ", compatibilityInfo=" + cxt.getResources().getCompatibilityInfo()); 2696 } 2697 try { 2698 canvas.translate(-xoff, -yoff); 2699 if (mTranslator != null) { 2700 mTranslator.translateCanvas(canvas); 2701 } 2702 canvas.setScreenDensity(scalingRequired ? mNoncompatDensity : 0); 2703 attachInfo.mSetIgnoreDirtyState = false; 2704 2705 mView.draw(canvas); 2706 2707 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2708 } finally { 2709 if (!attachInfo.mSetIgnoreDirtyState) { 2710 // Only clear the flag if it was not set during the mView.draw() call 2711 attachInfo.mIgnoreDirtyState = false; 2712 } 2713 } 2714 } finally { 2715 try { 2716 surface.unlockCanvasAndPost(canvas); 2717 } catch (IllegalArgumentException e) { 2718 Log.e(TAG, "Could not unlock surface", e); 2719 mLayoutRequested = true; // ask wm for a new surface next time. 2720 //noinspection ReturnInsideFinallyBlock 2721 return false; 2722 } 2723 2724 if (LOCAL_LOGV) { 2725 Log.v(TAG, "Surface " + surface + " unlockCanvasAndPost"); 2726 } 2727 } 2728 return true; 2729 } 2730 2731 /** 2732 * We want to draw a highlight around the current accessibility focused. 2733 * Since adding a style for all possible view is not a viable option we 2734 * have this specialized drawing method. 2735 * 2736 * Note: We are doing this here to be able to draw the highlight for 2737 * virtual views in addition to real ones. 2738 * 2739 * @param canvas The canvas on which to draw. 2740 */ 2741 private void drawAccessibilityFocusedDrawableIfNeeded(Canvas canvas) { 2742 final Rect bounds = mAttachInfo.mTmpInvalRect; 2743 if (getAccessibilityFocusedRect(bounds)) { 2744 final Drawable drawable = getAccessibilityFocusedDrawable(); 2745 if (drawable != null) { 2746 drawable.setBounds(bounds); 2747 drawable.draw(canvas); 2748 } 2749 } else if (mAttachInfo.mAccessibilityFocusDrawable != null) { 2750 mAttachInfo.mAccessibilityFocusDrawable.setBounds(0, 0, 0, 0); 2751 } 2752 } 2753 2754 private boolean getAccessibilityFocusedRect(Rect bounds) { 2755 final AccessibilityManager manager = AccessibilityManager.getInstance(mView.mContext); 2756 if (!manager.isEnabled() || !manager.isTouchExplorationEnabled()) { 2757 return false; 2758 } 2759 2760 final View host = mAccessibilityFocusedHost; 2761 if (host == null || host.mAttachInfo == null) { 2762 return false; 2763 } 2764 2765 final AccessibilityNodeProvider provider = host.getAccessibilityNodeProvider(); 2766 if (provider == null) { 2767 host.getBoundsOnScreen(bounds, true); 2768 } else if (mAccessibilityFocusedVirtualView != null) { 2769 mAccessibilityFocusedVirtualView.getBoundsInScreen(bounds); 2770 } else { 2771 return false; 2772 } 2773 2774 final AttachInfo attachInfo = mAttachInfo; 2775 bounds.offset(-attachInfo.mWindowLeft, -attachInfo.mWindowTop); 2776 bounds.intersect(0, 0, attachInfo.mViewRootImpl.mWidth, attachInfo.mViewRootImpl.mHeight); 2777 return !bounds.isEmpty(); 2778 } 2779 2780 private Drawable getAccessibilityFocusedDrawable() { 2781 // Lazily load the accessibility focus drawable. 2782 if (mAttachInfo.mAccessibilityFocusDrawable == null) { 2783 final TypedValue value = new TypedValue(); 2784 final boolean resolved = mView.mContext.getTheme().resolveAttribute( 2785 R.attr.accessibilityFocusedDrawable, value, true); 2786 if (resolved) { 2787 mAttachInfo.mAccessibilityFocusDrawable = 2788 mView.mContext.getDrawable(value.resourceId); 2789 } 2790 } 2791 return mAttachInfo.mAccessibilityFocusDrawable; 2792 } 2793 2794 /** 2795 * @hide 2796 */ 2797 public void setDrawDuringWindowsAnimating(boolean value) { 2798 mDrawDuringWindowsAnimating = value; 2799 if (value) { 2800 handleDispatchWindowAnimationStopped(); 2801 } 2802 } 2803 2804 boolean scrollToRectOrFocus(Rect rectangle, boolean immediate) { 2805 final Rect ci = mAttachInfo.mContentInsets; 2806 final Rect vi = mAttachInfo.mVisibleInsets; 2807 int scrollY = 0; 2808 boolean handled = false; 2809 2810 if (vi.left > ci.left || vi.top > ci.top 2811 || vi.right > ci.right || vi.bottom > ci.bottom) { 2812 // We'll assume that we aren't going to change the scroll 2813 // offset, since we want to avoid that unless it is actually 2814 // going to make the focus visible... otherwise we scroll 2815 // all over the place. 2816 scrollY = mScrollY; 2817 // We can be called for two different situations: during a draw, 2818 // to update the scroll position if the focus has changed (in which 2819 // case 'rectangle' is null), or in response to a 2820 // requestChildRectangleOnScreen() call (in which case 'rectangle' 2821 // is non-null and we just want to scroll to whatever that 2822 // rectangle is). 2823 final View focus = mView.findFocus(); 2824 if (focus == null) { 2825 return false; 2826 } 2827 View lastScrolledFocus = (mLastScrolledFocus != null) ? mLastScrolledFocus.get() : null; 2828 if (focus != lastScrolledFocus) { 2829 // If the focus has changed, then ignore any requests to scroll 2830 // to a rectangle; first we want to make sure the entire focus 2831 // view is visible. 2832 rectangle = null; 2833 } 2834 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Eval scroll: focus=" + focus 2835 + " rectangle=" + rectangle + " ci=" + ci 2836 + " vi=" + vi); 2837 if (focus == lastScrolledFocus && !mScrollMayChange && rectangle == null) { 2838 // Optimization: if the focus hasn't changed since last 2839 // time, and no layout has happened, then just leave things 2840 // as they are. 2841 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Keeping scroll y=" 2842 + mScrollY + " vi=" + vi.toShortString()); 2843 } else { 2844 // We need to determine if the currently focused view is 2845 // within the visible part of the window and, if not, apply 2846 // a pan so it can be seen. 2847 mLastScrolledFocus = new WeakReference<View>(focus); 2848 mScrollMayChange = false; 2849 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Need to scroll?"); 2850 // Try to find the rectangle from the focus view. 2851 if (focus.getGlobalVisibleRect(mVisRect, null)) { 2852 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Root w=" 2853 + mView.getWidth() + " h=" + mView.getHeight() 2854 + " ci=" + ci.toShortString() 2855 + " vi=" + vi.toShortString()); 2856 if (rectangle == null) { 2857 focus.getFocusedRect(mTempRect); 2858 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Focus " + focus 2859 + ": focusRect=" + mTempRect.toShortString()); 2860 if (mView instanceof ViewGroup) { 2861 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 2862 focus, mTempRect); 2863 } 2864 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2865 "Focus in window: focusRect=" 2866 + mTempRect.toShortString() 2867 + " visRect=" + mVisRect.toShortString()); 2868 } else { 2869 mTempRect.set(rectangle); 2870 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2871 "Request scroll to rect: " 2872 + mTempRect.toShortString() 2873 + " visRect=" + mVisRect.toShortString()); 2874 } 2875 if (mTempRect.intersect(mVisRect)) { 2876 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2877 "Focus window visible rect: " 2878 + mTempRect.toShortString()); 2879 if (mTempRect.height() > 2880 (mView.getHeight()-vi.top-vi.bottom)) { 2881 // If the focus simply is not going to fit, then 2882 // best is probably just to leave things as-is. 2883 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2884 "Too tall; leaving scrollY=" + scrollY); 2885 } else if ((mTempRect.top-scrollY) < vi.top) { 2886 scrollY -= vi.top - (mTempRect.top-scrollY); 2887 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2888 "Top covered; scrollY=" + scrollY); 2889 } else if ((mTempRect.bottom-scrollY) 2890 > (mView.getHeight()-vi.bottom)) { 2891 scrollY += (mTempRect.bottom-scrollY) 2892 - (mView.getHeight()-vi.bottom); 2893 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2894 "Bottom covered; scrollY=" + scrollY); 2895 } 2896 handled = true; 2897 } 2898 } 2899 } 2900 } 2901 2902 if (scrollY != mScrollY) { 2903 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Pan scroll changed: old=" 2904 + mScrollY + " , new=" + scrollY); 2905 if (!immediate && mResizeBuffer == null) { 2906 if (mScroller == null) { 2907 mScroller = new Scroller(mView.getContext()); 2908 } 2909 mScroller.startScroll(0, mScrollY, 0, scrollY-mScrollY); 2910 } else if (mScroller != null) { 2911 mScroller.abortAnimation(); 2912 } 2913 mScrollY = scrollY; 2914 } 2915 2916 return handled; 2917 } 2918 2919 /** 2920 * @hide 2921 */ 2922 public View getAccessibilityFocusedHost() { 2923 return mAccessibilityFocusedHost; 2924 } 2925 2926 /** 2927 * @hide 2928 */ 2929 public AccessibilityNodeInfo getAccessibilityFocusedVirtualView() { 2930 return mAccessibilityFocusedVirtualView; 2931 } 2932 2933 void setAccessibilityFocus(View view, AccessibilityNodeInfo node) { 2934 // If we have a virtual view with accessibility focus we need 2935 // to clear the focus and invalidate the virtual view bounds. 2936 if (mAccessibilityFocusedVirtualView != null) { 2937 2938 AccessibilityNodeInfo focusNode = mAccessibilityFocusedVirtualView; 2939 View focusHost = mAccessibilityFocusedHost; 2940 2941 // Wipe the state of the current accessibility focus since 2942 // the call into the provider to clear accessibility focus 2943 // will fire an accessibility event which will end up calling 2944 // this method and we want to have clean state when this 2945 // invocation happens. 2946 mAccessibilityFocusedHost = null; 2947 mAccessibilityFocusedVirtualView = null; 2948 2949 // Clear accessibility focus on the host after clearing state since 2950 // this method may be reentrant. 2951 focusHost.clearAccessibilityFocusNoCallbacks(); 2952 2953 AccessibilityNodeProvider provider = focusHost.getAccessibilityNodeProvider(); 2954 if (provider != null) { 2955 // Invalidate the area of the cleared accessibility focus. 2956 focusNode.getBoundsInParent(mTempRect); 2957 focusHost.invalidate(mTempRect); 2958 // Clear accessibility focus in the virtual node. 2959 final int virtualNodeId = AccessibilityNodeInfo.getVirtualDescendantId( 2960 focusNode.getSourceNodeId()); 2961 provider.performAction(virtualNodeId, 2962 AccessibilityNodeInfo.ACTION_CLEAR_ACCESSIBILITY_FOCUS, null); 2963 } 2964 focusNode.recycle(); 2965 } 2966 if (mAccessibilityFocusedHost != null) { 2967 // Clear accessibility focus in the view. 2968 mAccessibilityFocusedHost.clearAccessibilityFocusNoCallbacks(); 2969 } 2970 2971 // Set the new focus host and node. 2972 mAccessibilityFocusedHost = view; 2973 mAccessibilityFocusedVirtualView = node; 2974 2975 if (mAttachInfo.mHardwareRenderer != null) { 2976 mAttachInfo.mHardwareRenderer.invalidateRoot(); 2977 } 2978 } 2979 2980 @Override 2981 public void requestChildFocus(View child, View focused) { 2982 if (DEBUG_INPUT_RESIZE) { 2983 Log.v(TAG, "Request child focus: focus now " + focused); 2984 } 2985 checkThread(); 2986 scheduleTraversals(); 2987 } 2988 2989 @Override 2990 public void clearChildFocus(View child) { 2991 if (DEBUG_INPUT_RESIZE) { 2992 Log.v(TAG, "Clearing child focus"); 2993 } 2994 checkThread(); 2995 scheduleTraversals(); 2996 } 2997 2998 @Override 2999 public ViewParent getParentForAccessibility() { 3000 return null; 3001 } 3002 3003 @Override 3004 public void focusableViewAvailable(View v) { 3005 checkThread(); 3006 if (mView != null) { 3007 if (!mView.hasFocus()) { 3008 v.requestFocus(); 3009 } else { 3010 // the one case where will transfer focus away from the current one 3011 // is if the current view is a view group that prefers to give focus 3012 // to its children first AND the view is a descendant of it. 3013 View focused = mView.findFocus(); 3014 if (focused instanceof ViewGroup) { 3015 ViewGroup group = (ViewGroup) focused; 3016 if (group.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 3017 && isViewDescendantOf(v, focused)) { 3018 v.requestFocus(); 3019 } 3020 } 3021 } 3022 } 3023 } 3024 3025 @Override 3026 public void recomputeViewAttributes(View child) { 3027 checkThread(); 3028 if (mView == child) { 3029 mAttachInfo.mRecomputeGlobalAttributes = true; 3030 if (!mWillDrawSoon) { 3031 scheduleTraversals(); 3032 } 3033 } 3034 } 3035 3036 void dispatchDetachedFromWindow() { 3037 if (mView != null && mView.mAttachInfo != null) { 3038 mAttachInfo.mTreeObserver.dispatchOnWindowAttachedChange(false); 3039 mView.dispatchDetachedFromWindow(); 3040 } 3041 3042 mAccessibilityInteractionConnectionManager.ensureNoConnection(); 3043 mAccessibilityManager.removeAccessibilityStateChangeListener( 3044 mAccessibilityInteractionConnectionManager); 3045 mAccessibilityManager.removeHighTextContrastStateChangeListener( 3046 mHighContrastTextManager); 3047 removeSendWindowContentChangedCallback(); 3048 3049 destroyHardwareRenderer(); 3050 3051 setAccessibilityFocus(null, null); 3052 3053 mView.assignParent(null); 3054 mView = null; 3055 mAttachInfo.mRootView = null; 3056 3057 mSurface.release(); 3058 3059 if (mInputQueueCallback != null && mInputQueue != null) { 3060 mInputQueueCallback.onInputQueueDestroyed(mInputQueue); 3061 mInputQueue.dispose(); 3062 mInputQueueCallback = null; 3063 mInputQueue = null; 3064 } 3065 if (mInputEventReceiver != null) { 3066 mInputEventReceiver.dispose(); 3067 mInputEventReceiver = null; 3068 } 3069 try { 3070 mWindowSession.remove(mWindow); 3071 } catch (RemoteException e) { 3072 } 3073 3074 // Dispose the input channel after removing the window so the Window Manager 3075 // doesn't interpret the input channel being closed as an abnormal termination. 3076 if (mInputChannel != null) { 3077 mInputChannel.dispose(); 3078 mInputChannel = null; 3079 } 3080 3081 mDisplayManager.unregisterDisplayListener(mDisplayListener); 3082 3083 unscheduleTraversals(); 3084 } 3085 3086 void updateConfiguration(Configuration config, boolean force) { 3087 if (DEBUG_CONFIGURATION) Log.v(TAG, 3088 "Applying new config to window " 3089 + mWindowAttributes.getTitle() 3090 + ": " + config); 3091 3092 CompatibilityInfo ci = mDisplayAdjustments.getCompatibilityInfo(); 3093 if (!ci.equals(CompatibilityInfo.DEFAULT_COMPATIBILITY_INFO)) { 3094 config = new Configuration(config); 3095 ci.applyToConfiguration(mNoncompatDensity, config); 3096 } 3097 3098 synchronized (sConfigCallbacks) { 3099 for (int i=sConfigCallbacks.size()-1; i>=0; i--) { 3100 sConfigCallbacks.get(i).onConfigurationChanged(config); 3101 } 3102 } 3103 if (mView != null) { 3104 // At this point the resources have been updated to 3105 // have the most recent config, whatever that is. Use 3106 // the one in them which may be newer. 3107 config = mView.getResources().getConfiguration(); 3108 if (force || mLastConfiguration.diff(config) != 0) { 3109 final int lastLayoutDirection = mLastConfiguration.getLayoutDirection(); 3110 final int currentLayoutDirection = config.getLayoutDirection(); 3111 mLastConfiguration.setTo(config); 3112 if (lastLayoutDirection != currentLayoutDirection && 3113 mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 3114 mView.setLayoutDirection(currentLayoutDirection); 3115 } 3116 mView.dispatchConfigurationChanged(config); 3117 } 3118 } 3119 } 3120 3121 /** 3122 * Return true if child is an ancestor of parent, (or equal to the parent). 3123 */ 3124 public static boolean isViewDescendantOf(View child, View parent) { 3125 if (child == parent) { 3126 return true; 3127 } 3128 3129 final ViewParent theParent = child.getParent(); 3130 return (theParent instanceof ViewGroup) && isViewDescendantOf((View) theParent, parent); 3131 } 3132 3133 private final static int MSG_INVALIDATE = 1; 3134 private final static int MSG_INVALIDATE_RECT = 2; 3135 private final static int MSG_DIE = 3; 3136 private final static int MSG_RESIZED = 4; 3137 private final static int MSG_RESIZED_REPORT = 5; 3138 private final static int MSG_WINDOW_FOCUS_CHANGED = 6; 3139 private final static int MSG_DISPATCH_INPUT_EVENT = 7; 3140 private final static int MSG_DISPATCH_APP_VISIBILITY = 8; 3141 private final static int MSG_DISPATCH_GET_NEW_SURFACE = 9; 3142 private final static int MSG_DISPATCH_KEY_FROM_IME = 11; 3143 private final static int MSG_FINISH_INPUT_CONNECTION = 12; 3144 private final static int MSG_CHECK_FOCUS = 13; 3145 private final static int MSG_CLOSE_SYSTEM_DIALOGS = 14; 3146 private final static int MSG_DISPATCH_DRAG_EVENT = 15; 3147 private final static int MSG_DISPATCH_DRAG_LOCATION_EVENT = 16; 3148 private final static int MSG_DISPATCH_SYSTEM_UI_VISIBILITY = 17; 3149 private final static int MSG_UPDATE_CONFIGURATION = 18; 3150 private final static int MSG_PROCESS_INPUT_EVENTS = 19; 3151 private final static int MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST = 21; 3152 private final static int MSG_INVALIDATE_WORLD = 22; 3153 private final static int MSG_WINDOW_MOVED = 23; 3154 private final static int MSG_SYNTHESIZE_INPUT_EVENT = 24; 3155 private final static int MSG_DISPATCH_WINDOW_SHOWN = 25; 3156 private final static int MSG_DISPATCH_WINDOW_ANIMATION_STOPPED = 26; 3157 private final static int MSG_DISPATCH_WINDOW_ANIMATION_STARTED = 27; 3158 3159 final class ViewRootHandler extends Handler { 3160 @Override 3161 public String getMessageName(Message message) { 3162 switch (message.what) { 3163 case MSG_INVALIDATE: 3164 return "MSG_INVALIDATE"; 3165 case MSG_INVALIDATE_RECT: 3166 return "MSG_INVALIDATE_RECT"; 3167 case MSG_DIE: 3168 return "MSG_DIE"; 3169 case MSG_RESIZED: 3170 return "MSG_RESIZED"; 3171 case MSG_RESIZED_REPORT: 3172 return "MSG_RESIZED_REPORT"; 3173 case MSG_WINDOW_FOCUS_CHANGED: 3174 return "MSG_WINDOW_FOCUS_CHANGED"; 3175 case MSG_DISPATCH_INPUT_EVENT: 3176 return "MSG_DISPATCH_INPUT_EVENT"; 3177 case MSG_DISPATCH_APP_VISIBILITY: 3178 return "MSG_DISPATCH_APP_VISIBILITY"; 3179 case MSG_DISPATCH_GET_NEW_SURFACE: 3180 return "MSG_DISPATCH_GET_NEW_SURFACE"; 3181 case MSG_DISPATCH_KEY_FROM_IME: 3182 return "MSG_DISPATCH_KEY_FROM_IME"; 3183 case MSG_FINISH_INPUT_CONNECTION: 3184 return "MSG_FINISH_INPUT_CONNECTION"; 3185 case MSG_CHECK_FOCUS: 3186 return "MSG_CHECK_FOCUS"; 3187 case MSG_CLOSE_SYSTEM_DIALOGS: 3188 return "MSG_CLOSE_SYSTEM_DIALOGS"; 3189 case MSG_DISPATCH_DRAG_EVENT: 3190 return "MSG_DISPATCH_DRAG_EVENT"; 3191 case MSG_DISPATCH_DRAG_LOCATION_EVENT: 3192 return "MSG_DISPATCH_DRAG_LOCATION_EVENT"; 3193 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: 3194 return "MSG_DISPATCH_SYSTEM_UI_VISIBILITY"; 3195 case MSG_UPDATE_CONFIGURATION: 3196 return "MSG_UPDATE_CONFIGURATION"; 3197 case MSG_PROCESS_INPUT_EVENTS: 3198 return "MSG_PROCESS_INPUT_EVENTS"; 3199 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: 3200 return "MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST"; 3201 case MSG_DISPATCH_WINDOW_ANIMATION_STARTED: 3202 return "MSG_DISPATCH_WINDOW_ANIMATION_STARTED"; 3203 case MSG_DISPATCH_WINDOW_ANIMATION_STOPPED: 3204 return "MSG_DISPATCH_WINDOW_ANIMATION_STOPPED"; 3205 case MSG_WINDOW_MOVED: 3206 return "MSG_WINDOW_MOVED"; 3207 case MSG_SYNTHESIZE_INPUT_EVENT: 3208 return "MSG_SYNTHESIZE_INPUT_EVENT"; 3209 case MSG_DISPATCH_WINDOW_SHOWN: 3210 return "MSG_DISPATCH_WINDOW_SHOWN"; 3211 } 3212 return super.getMessageName(message); 3213 } 3214 3215 @Override 3216 public void handleMessage(Message msg) { 3217 switch (msg.what) { 3218 case MSG_INVALIDATE: 3219 ((View) msg.obj).invalidate(); 3220 break; 3221 case MSG_INVALIDATE_RECT: 3222 final View.AttachInfo.InvalidateInfo info = (View.AttachInfo.InvalidateInfo) msg.obj; 3223 info.target.invalidate(info.left, info.top, info.right, info.bottom); 3224 info.recycle(); 3225 break; 3226 case MSG_PROCESS_INPUT_EVENTS: 3227 mProcessInputEventsScheduled = false; 3228 doProcessInputEvents(); 3229 break; 3230 case MSG_DISPATCH_APP_VISIBILITY: 3231 handleAppVisibility(msg.arg1 != 0); 3232 break; 3233 case MSG_DISPATCH_GET_NEW_SURFACE: 3234 handleGetNewSurface(); 3235 break; 3236 case MSG_RESIZED: { 3237 // Recycled in the fall through... 3238 SomeArgs args = (SomeArgs) msg.obj; 3239 if (mWinFrame.equals(args.arg1) 3240 && mPendingOverscanInsets.equals(args.arg5) 3241 && mPendingContentInsets.equals(args.arg2) 3242 && mPendingStableInsets.equals(args.arg6) 3243 && mPendingVisibleInsets.equals(args.arg3) 3244 && args.arg4 == null) { 3245 break; 3246 } 3247 } // fall through... 3248 case MSG_RESIZED_REPORT: 3249 if (mAdded) { 3250 SomeArgs args = (SomeArgs) msg.obj; 3251 3252 Configuration config = (Configuration) args.arg4; 3253 if (config != null) { 3254 updateConfiguration(config, false); 3255 } 3256 3257 mWinFrame.set((Rect) args.arg1); 3258 mPendingOverscanInsets.set((Rect) args.arg5); 3259 mPendingContentInsets.set((Rect) args.arg2); 3260 mPendingStableInsets.set((Rect) args.arg6); 3261 mPendingVisibleInsets.set((Rect) args.arg3); 3262 3263 args.recycle(); 3264 3265 if (msg.what == MSG_RESIZED_REPORT) { 3266 mReportNextDraw = true; 3267 } 3268 3269 requestLayout(); 3270 } 3271 break; 3272 case MSG_WINDOW_MOVED: 3273 if (mAdded) { 3274 final int w = mWinFrame.width(); 3275 final int h = mWinFrame.height(); 3276 final int l = msg.arg1; 3277 final int t = msg.arg2; 3278 mWinFrame.left = l; 3279 mWinFrame.right = l + w; 3280 mWinFrame.top = t; 3281 mWinFrame.bottom = t + h; 3282 3283 requestLayout(); 3284 } 3285 break; 3286 case MSG_WINDOW_FOCUS_CHANGED: { 3287 if (mAdded) { 3288 boolean hasWindowFocus = msg.arg1 != 0; 3289 mAttachInfo.mHasWindowFocus = hasWindowFocus; 3290 3291 profileRendering(hasWindowFocus); 3292 3293 if (hasWindowFocus) { 3294 boolean inTouchMode = msg.arg2 != 0; 3295 ensureTouchModeLocally(inTouchMode); 3296 3297 if (mAttachInfo.mHardwareRenderer != null && mSurface.isValid()){ 3298 mFullRedrawNeeded = true; 3299 try { 3300 final WindowManager.LayoutParams lp = mWindowAttributes; 3301 final Rect surfaceInsets = lp != null ? lp.surfaceInsets : null; 3302 mAttachInfo.mHardwareRenderer.initializeIfNeeded( 3303 mWidth, mHeight, mSurface, surfaceInsets); 3304 } catch (OutOfResourcesException e) { 3305 Log.e(TAG, "OutOfResourcesException locking surface", e); 3306 try { 3307 if (!mWindowSession.outOfMemory(mWindow)) { 3308 Slog.w(TAG, "No processes killed for memory; killing self"); 3309 Process.killProcess(Process.myPid()); 3310 } 3311 } catch (RemoteException ex) { 3312 } 3313 // Retry in a bit. 3314 sendMessageDelayed(obtainMessage(msg.what, msg.arg1, msg.arg2), 500); 3315 return; 3316 } 3317 } 3318 } 3319 3320 mLastWasImTarget = WindowManager.LayoutParams 3321 .mayUseInputMethod(mWindowAttributes.flags); 3322 3323 InputMethodManager imm = InputMethodManager.peekInstance(); 3324 if (imm != null && mLastWasImTarget && !isInLocalFocusMode()) { 3325 imm.onPreWindowFocus(mView, hasWindowFocus); 3326 } 3327 if (mView != null) { 3328 mAttachInfo.mKeyDispatchState.reset(); 3329 mView.dispatchWindowFocusChanged(hasWindowFocus); 3330 mAttachInfo.mTreeObserver.dispatchOnWindowFocusChange(hasWindowFocus); 3331 } 3332 3333 // Note: must be done after the focus change callbacks, 3334 // so all of the view state is set up correctly. 3335 if (hasWindowFocus) { 3336 if (imm != null && mLastWasImTarget && !isInLocalFocusMode()) { 3337 imm.onPostWindowFocus(mView, mView.findFocus(), 3338 mWindowAttributes.softInputMode, 3339 !mHasHadWindowFocus, mWindowAttributes.flags); 3340 } 3341 // Clear the forward bit. We can just do this directly, since 3342 // the window manager doesn't care about it. 3343 mWindowAttributes.softInputMode &= 3344 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3345 ((WindowManager.LayoutParams)mView.getLayoutParams()) 3346 .softInputMode &= 3347 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3348 mHasHadWindowFocus = true; 3349 } 3350 3351 if (mView != null && mAccessibilityManager.isEnabled()) { 3352 if (hasWindowFocus) { 3353 mView.sendAccessibilityEvent( 3354 AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 3355 } 3356 } 3357 } 3358 } break; 3359 case MSG_DIE: 3360 doDie(); 3361 break; 3362 case MSG_DISPATCH_INPUT_EVENT: { 3363 SomeArgs args = (SomeArgs)msg.obj; 3364 InputEvent event = (InputEvent)args.arg1; 3365 InputEventReceiver receiver = (InputEventReceiver)args.arg2; 3366 enqueueInputEvent(event, receiver, 0, true); 3367 args.recycle(); 3368 } break; 3369 case MSG_SYNTHESIZE_INPUT_EVENT: { 3370 InputEvent event = (InputEvent)msg.obj; 3371 enqueueInputEvent(event, null, QueuedInputEvent.FLAG_UNHANDLED, true); 3372 } break; 3373 case MSG_DISPATCH_KEY_FROM_IME: { 3374 if (LOCAL_LOGV) Log.v( 3375 TAG, "Dispatching key " 3376 + msg.obj + " from IME to " + mView); 3377 KeyEvent event = (KeyEvent)msg.obj; 3378 if ((event.getFlags()&KeyEvent.FLAG_FROM_SYSTEM) != 0) { 3379 // The IME is trying to say this event is from the 3380 // system! Bad bad bad! 3381 //noinspection UnusedAssignment 3382 event = KeyEvent.changeFlags(event, event.getFlags() & 3383 ~KeyEvent.FLAG_FROM_SYSTEM); 3384 } 3385 enqueueInputEvent(event, null, QueuedInputEvent.FLAG_DELIVER_POST_IME, true); 3386 } break; 3387 case MSG_FINISH_INPUT_CONNECTION: { 3388 InputMethodManager imm = InputMethodManager.peekInstance(); 3389 if (imm != null) { 3390 imm.reportFinishInputConnection((InputConnection)msg.obj); 3391 } 3392 } break; 3393 case MSG_CHECK_FOCUS: { 3394 InputMethodManager imm = InputMethodManager.peekInstance(); 3395 if (imm != null) { 3396 imm.checkFocus(); 3397 } 3398 } break; 3399 case MSG_CLOSE_SYSTEM_DIALOGS: { 3400 if (mView != null) { 3401 mView.onCloseSystemDialogs((String)msg.obj); 3402 } 3403 } break; 3404 case MSG_DISPATCH_DRAG_EVENT: 3405 case MSG_DISPATCH_DRAG_LOCATION_EVENT: { 3406 DragEvent event = (DragEvent)msg.obj; 3407 event.mLocalState = mLocalDragState; // only present when this app called startDrag() 3408 handleDragEvent(event); 3409 } break; 3410 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: { 3411 handleDispatchSystemUiVisibilityChanged((SystemUiVisibilityInfo) msg.obj); 3412 } break; 3413 case MSG_UPDATE_CONFIGURATION: { 3414 Configuration config = (Configuration)msg.obj; 3415 if (config.isOtherSeqNewer(mLastConfiguration)) { 3416 config = mLastConfiguration; 3417 } 3418 updateConfiguration(config, false); 3419 } break; 3420 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: { 3421 setAccessibilityFocus(null, null); 3422 } break; 3423 case MSG_DISPATCH_WINDOW_ANIMATION_STARTED: { 3424 int remainingFrameCount = msg.arg1; 3425 handleDispatchWindowAnimationStarted(remainingFrameCount); 3426 } break; 3427 case MSG_DISPATCH_WINDOW_ANIMATION_STOPPED: { 3428 handleDispatchWindowAnimationStopped(); 3429 } break; 3430 case MSG_INVALIDATE_WORLD: { 3431 if (mView != null) { 3432 invalidateWorld(mView); 3433 } 3434 } break; 3435 case MSG_DISPATCH_WINDOW_SHOWN: { 3436 handleDispatchWindowShown(); 3437 } 3438 } 3439 } 3440 } 3441 3442 final ViewRootHandler mHandler = new ViewRootHandler(); 3443 3444 /** 3445 * Something in the current window tells us we need to change the touch mode. For 3446 * example, we are not in touch mode, and the user touches the screen. 3447 * 3448 * If the touch mode has changed, tell the window manager, and handle it locally. 3449 * 3450 * @param inTouchMode Whether we want to be in touch mode. 3451 * @return True if the touch mode changed and focus changed was changed as a result 3452 */ 3453 boolean ensureTouchMode(boolean inTouchMode) { 3454 if (DBG) Log.d("touchmode", "ensureTouchMode(" + inTouchMode + "), current " 3455 + "touch mode is " + mAttachInfo.mInTouchMode); 3456 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3457 3458 // tell the window manager 3459 try { 3460 if (!isInLocalFocusMode()) { 3461 mWindowSession.setInTouchMode(inTouchMode); 3462 } 3463 } catch (RemoteException e) { 3464 throw new RuntimeException(e); 3465 } 3466 3467 // handle the change 3468 return ensureTouchModeLocally(inTouchMode); 3469 } 3470 3471 /** 3472 * Ensure that the touch mode for this window is set, and if it is changing, 3473 * take the appropriate action. 3474 * @param inTouchMode Whether we want to be in touch mode. 3475 * @return True if the touch mode changed and focus changed was changed as a result 3476 */ 3477 private boolean ensureTouchModeLocally(boolean inTouchMode) { 3478 if (DBG) Log.d("touchmode", "ensureTouchModeLocally(" + inTouchMode + "), current " 3479 + "touch mode is " + mAttachInfo.mInTouchMode); 3480 3481 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3482 3483 mAttachInfo.mInTouchMode = inTouchMode; 3484 mAttachInfo.mTreeObserver.dispatchOnTouchModeChanged(inTouchMode); 3485 3486 return (inTouchMode) ? enterTouchMode() : leaveTouchMode(); 3487 } 3488 3489 private boolean enterTouchMode() { 3490 if (mView != null && mView.hasFocus()) { 3491 // note: not relying on mFocusedView here because this could 3492 // be when the window is first being added, and mFocused isn't 3493 // set yet. 3494 final View focused = mView.findFocus(); 3495 if (focused != null && !focused.isFocusableInTouchMode()) { 3496 final ViewGroup ancestorToTakeFocus = findAncestorToTakeFocusInTouchMode(focused); 3497 if (ancestorToTakeFocus != null) { 3498 // there is an ancestor that wants focus after its 3499 // descendants that is focusable in touch mode.. give it 3500 // focus 3501 return ancestorToTakeFocus.requestFocus(); 3502 } else { 3503 // There's nothing to focus. Clear and propagate through the 3504 // hierarchy, but don't attempt to place new focus. 3505 focused.clearFocusInternal(null, true, false); 3506 return true; 3507 } 3508 } 3509 } 3510 return false; 3511 } 3512 3513 /** 3514 * Find an ancestor of focused that wants focus after its descendants and is 3515 * focusable in touch mode. 3516 * @param focused The currently focused view. 3517 * @return An appropriate view, or null if no such view exists. 3518 */ 3519 private static ViewGroup findAncestorToTakeFocusInTouchMode(View focused) { 3520 ViewParent parent = focused.getParent(); 3521 while (parent instanceof ViewGroup) { 3522 final ViewGroup vgParent = (ViewGroup) parent; 3523 if (vgParent.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 3524 && vgParent.isFocusableInTouchMode()) { 3525 return vgParent; 3526 } 3527 if (vgParent.isRootNamespace()) { 3528 return null; 3529 } else { 3530 parent = vgParent.getParent(); 3531 } 3532 } 3533 return null; 3534 } 3535 3536 private boolean leaveTouchMode() { 3537 if (mView != null) { 3538 if (mView.hasFocus()) { 3539 View focusedView = mView.findFocus(); 3540 if (!(focusedView instanceof ViewGroup)) { 3541 // some view has focus, let it keep it 3542 return false; 3543 } else if (((ViewGroup) focusedView).getDescendantFocusability() != 3544 ViewGroup.FOCUS_AFTER_DESCENDANTS) { 3545 // some view group has focus, and doesn't prefer its children 3546 // over itself for focus, so let them keep it. 3547 return false; 3548 } 3549 } 3550 3551 // find the best view to give focus to in this brave new non-touch-mode 3552 // world 3553 final View focused = focusSearch(null, View.FOCUS_DOWN); 3554 if (focused != null) { 3555 return focused.requestFocus(View.FOCUS_DOWN); 3556 } 3557 } 3558 return false; 3559 } 3560 3561 /** 3562 * Base class for implementing a stage in the chain of responsibility 3563 * for processing input events. 3564 * <p> 3565 * Events are delivered to the stage by the {@link #deliver} method. The stage 3566 * then has the choice of finishing the event or forwarding it to the next stage. 3567 * </p> 3568 */ 3569 abstract class InputStage { 3570 private final InputStage mNext; 3571 3572 protected static final int FORWARD = 0; 3573 protected static final int FINISH_HANDLED = 1; 3574 protected static final int FINISH_NOT_HANDLED = 2; 3575 3576 /** 3577 * Creates an input stage. 3578 * @param next The next stage to which events should be forwarded. 3579 */ 3580 public InputStage(InputStage next) { 3581 mNext = next; 3582 } 3583 3584 /** 3585 * Delivers an event to be processed. 3586 */ 3587 public final void deliver(QueuedInputEvent q) { 3588 if ((q.mFlags & QueuedInputEvent.FLAG_FINISHED) != 0) { 3589 forward(q); 3590 } else if (shouldDropInputEvent(q)) { 3591 finish(q, false); 3592 } else { 3593 apply(q, onProcess(q)); 3594 } 3595 } 3596 3597 /** 3598 * Marks the the input event as finished then forwards it to the next stage. 3599 */ 3600 protected void finish(QueuedInputEvent q, boolean handled) { 3601 q.mFlags |= QueuedInputEvent.FLAG_FINISHED; 3602 if (handled) { 3603 q.mFlags |= QueuedInputEvent.FLAG_FINISHED_HANDLED; 3604 } 3605 forward(q); 3606 } 3607 3608 /** 3609 * Forwards the event to the next stage. 3610 */ 3611 protected void forward(QueuedInputEvent q) { 3612 onDeliverToNext(q); 3613 } 3614 3615 /** 3616 * Applies a result code from {@link #onProcess} to the specified event. 3617 */ 3618 protected void apply(QueuedInputEvent q, int result) { 3619 if (result == FORWARD) { 3620 forward(q); 3621 } else if (result == FINISH_HANDLED) { 3622 finish(q, true); 3623 } else if (result == FINISH_NOT_HANDLED) { 3624 finish(q, false); 3625 } else { 3626 throw new IllegalArgumentException("Invalid result: " + result); 3627 } 3628 } 3629 3630 /** 3631 * Called when an event is ready to be processed. 3632 * @return A result code indicating how the event was handled. 3633 */ 3634 protected int onProcess(QueuedInputEvent q) { 3635 return FORWARD; 3636 } 3637 3638 /** 3639 * Called when an event is being delivered to the next stage. 3640 */ 3641 protected void onDeliverToNext(QueuedInputEvent q) { 3642 if (DEBUG_INPUT_STAGES) { 3643 Log.v(TAG, "Done with " + getClass().getSimpleName() + ". " + q); 3644 } 3645 if (mNext != null) { 3646 mNext.deliver(q); 3647 } else { 3648 finishInputEvent(q); 3649 } 3650 } 3651 3652 protected boolean shouldDropInputEvent(QueuedInputEvent q) { 3653 if (mView == null || !mAdded) { 3654 Slog.w(TAG, "Dropping event due to root view being removed: " + q.mEvent); 3655 return true; 3656 } else if ((!mAttachInfo.mHasWindowFocus 3657 && !q.mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER)) || mStopped 3658 || (mPausedForTransition && !isBack(q.mEvent))) { 3659 // This is a focus event and the window doesn't currently have input focus or 3660 // has stopped. This could be an event that came back from the previous stage 3661 // but the window has lost focus or stopped in the meantime. 3662 if (isTerminalInputEvent(q.mEvent)) { 3663 // Don't drop terminal input events, however mark them as canceled. 3664 q.mEvent.cancel(); 3665 Slog.w(TAG, "Cancelling event due to no window focus: " + q.mEvent); 3666 return false; 3667 } 3668 3669 // Drop non-terminal input events. 3670 Slog.w(TAG, "Dropping event due to no window focus: " + q.mEvent); 3671 return true; 3672 } 3673 return false; 3674 } 3675 3676 void dump(String prefix, PrintWriter writer) { 3677 if (mNext != null) { 3678 mNext.dump(prefix, writer); 3679 } 3680 } 3681 3682 private boolean isBack(InputEvent event) { 3683 if (event instanceof KeyEvent) { 3684 return ((KeyEvent) event).getKeyCode() == KeyEvent.KEYCODE_BACK; 3685 } else { 3686 return false; 3687 } 3688 } 3689 } 3690 3691 /** 3692 * Base class for implementing an input pipeline stage that supports 3693 * asynchronous and out-of-order processing of input events. 3694 * <p> 3695 * In addition to what a normal input stage can do, an asynchronous 3696 * input stage may also defer an input event that has been delivered to it 3697 * and finish or forward it later. 3698 * </p> 3699 */ 3700 abstract class AsyncInputStage extends InputStage { 3701 private final String mTraceCounter; 3702 3703 private QueuedInputEvent mQueueHead; 3704 private QueuedInputEvent mQueueTail; 3705 private int mQueueLength; 3706 3707 protected static final int DEFER = 3; 3708 3709 /** 3710 * Creates an asynchronous input stage. 3711 * @param next The next stage to which events should be forwarded. 3712 * @param traceCounter The name of a counter to record the size of 3713 * the queue of pending events. 3714 */ 3715 public AsyncInputStage(InputStage next, String traceCounter) { 3716 super(next); 3717 mTraceCounter = traceCounter; 3718 } 3719 3720 /** 3721 * Marks the event as deferred, which is to say that it will be handled 3722 * asynchronously. The caller is responsible for calling {@link #forward} 3723 * or {@link #finish} later when it is done handling the event. 3724 */ 3725 protected void defer(QueuedInputEvent q) { 3726 q.mFlags |= QueuedInputEvent.FLAG_DEFERRED; 3727 enqueue(q); 3728 } 3729 3730 @Override 3731 protected void forward(QueuedInputEvent q) { 3732 // Clear the deferred flag. 3733 q.mFlags &= ~QueuedInputEvent.FLAG_DEFERRED; 3734 3735 // Fast path if the queue is empty. 3736 QueuedInputEvent curr = mQueueHead; 3737 if (curr == null) { 3738 super.forward(q); 3739 return; 3740 } 3741 3742 // Determine whether the event must be serialized behind any others 3743 // before it can be delivered to the next stage. This is done because 3744 // deferred events might be handled out of order by the stage. 3745 final int deviceId = q.mEvent.getDeviceId(); 3746 QueuedInputEvent prev = null; 3747 boolean blocked = false; 3748 while (curr != null && curr != q) { 3749 if (!blocked && deviceId == curr.mEvent.getDeviceId()) { 3750 blocked = true; 3751 } 3752 prev = curr; 3753 curr = curr.mNext; 3754 } 3755 3756 // If the event is blocked, then leave it in the queue to be delivered later. 3757 // Note that the event might not yet be in the queue if it was not previously 3758 // deferred so we will enqueue it if needed. 3759 if (blocked) { 3760 if (curr == null) { 3761 enqueue(q); 3762 } 3763 return; 3764 } 3765 3766 // The event is not blocked. Deliver it immediately. 3767 if (curr != null) { 3768 curr = curr.mNext; 3769 dequeue(q, prev); 3770 } 3771 super.forward(q); 3772 3773 // Dequeuing this event may have unblocked successors. Deliver them. 3774 while (curr != null) { 3775 if (deviceId == curr.mEvent.getDeviceId()) { 3776 if ((curr.mFlags & QueuedInputEvent.FLAG_DEFERRED) != 0) { 3777 break; 3778 } 3779 QueuedInputEvent next = curr.mNext; 3780 dequeue(curr, prev); 3781 super.forward(curr); 3782 curr = next; 3783 } else { 3784 prev = curr; 3785 curr = curr.mNext; 3786 } 3787 } 3788 } 3789 3790 @Override 3791 protected void apply(QueuedInputEvent q, int result) { 3792 if (result == DEFER) { 3793 defer(q); 3794 } else { 3795 super.apply(q, result); 3796 } 3797 } 3798 3799 private void enqueue(QueuedInputEvent q) { 3800 if (mQueueTail == null) { 3801 mQueueHead = q; 3802 mQueueTail = q; 3803 } else { 3804 mQueueTail.mNext = q; 3805 mQueueTail = q; 3806 } 3807 3808 mQueueLength += 1; 3809 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 3810 } 3811 3812 private void dequeue(QueuedInputEvent q, QueuedInputEvent prev) { 3813 if (prev == null) { 3814 mQueueHead = q.mNext; 3815 } else { 3816 prev.mNext = q.mNext; 3817 } 3818 if (mQueueTail == q) { 3819 mQueueTail = prev; 3820 } 3821 q.mNext = null; 3822 3823 mQueueLength -= 1; 3824 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 3825 } 3826 3827 @Override 3828 void dump(String prefix, PrintWriter writer) { 3829 writer.print(prefix); 3830 writer.print(getClass().getName()); 3831 writer.print(": mQueueLength="); 3832 writer.println(mQueueLength); 3833 3834 super.dump(prefix, writer); 3835 } 3836 } 3837 3838 /** 3839 * Delivers pre-ime input events to a native activity. 3840 * Does not support pointer events. 3841 */ 3842 final class NativePreImeInputStage extends AsyncInputStage 3843 implements InputQueue.FinishedInputEventCallback { 3844 public NativePreImeInputStage(InputStage next, String traceCounter) { 3845 super(next, traceCounter); 3846 } 3847 3848 @Override 3849 protected int onProcess(QueuedInputEvent q) { 3850 if (mInputQueue != null && q.mEvent instanceof KeyEvent) { 3851 mInputQueue.sendInputEvent(q.mEvent, q, true, this); 3852 return DEFER; 3853 } 3854 return FORWARD; 3855 } 3856 3857 @Override 3858 public void onFinishedInputEvent(Object token, boolean handled) { 3859 QueuedInputEvent q = (QueuedInputEvent)token; 3860 if (handled) { 3861 finish(q, true); 3862 return; 3863 } 3864 forward(q); 3865 } 3866 } 3867 3868 /** 3869 * Delivers pre-ime input events to the view hierarchy. 3870 * Does not support pointer events. 3871 */ 3872 final class ViewPreImeInputStage extends InputStage { 3873 public ViewPreImeInputStage(InputStage next) { 3874 super(next); 3875 } 3876 3877 @Override 3878 protected int onProcess(QueuedInputEvent q) { 3879 if (q.mEvent instanceof KeyEvent) { 3880 return processKeyEvent(q); 3881 } 3882 return FORWARD; 3883 } 3884 3885 private int processKeyEvent(QueuedInputEvent q) { 3886 final KeyEvent event = (KeyEvent)q.mEvent; 3887 if (mView.dispatchKeyEventPreIme(event)) { 3888 return FINISH_HANDLED; 3889 } 3890 return FORWARD; 3891 } 3892 } 3893 3894 /** 3895 * Delivers input events to the ime. 3896 * Does not support pointer events. 3897 */ 3898 final class ImeInputStage extends AsyncInputStage 3899 implements InputMethodManager.FinishedInputEventCallback { 3900 public ImeInputStage(InputStage next, String traceCounter) { 3901 super(next, traceCounter); 3902 } 3903 3904 @Override 3905 protected int onProcess(QueuedInputEvent q) { 3906 if (mLastWasImTarget && !isInLocalFocusMode()) { 3907 InputMethodManager imm = InputMethodManager.peekInstance(); 3908 if (imm != null) { 3909 final InputEvent event = q.mEvent; 3910 if (DEBUG_IMF) Log.v(TAG, "Sending input event to IME: " + event); 3911 int result = imm.dispatchInputEvent(event, q, this, mHandler); 3912 if (result == InputMethodManager.DISPATCH_HANDLED) { 3913 return FINISH_HANDLED; 3914 } else if (result == InputMethodManager.DISPATCH_NOT_HANDLED) { 3915 // The IME could not handle it, so skip along to the next InputStage 3916 return FORWARD; 3917 } else { 3918 return DEFER; // callback will be invoked later 3919 } 3920 } 3921 } 3922 return FORWARD; 3923 } 3924 3925 @Override 3926 public void onFinishedInputEvent(Object token, boolean handled) { 3927 QueuedInputEvent q = (QueuedInputEvent)token; 3928 if (handled) { 3929 finish(q, true); 3930 return; 3931 } 3932 forward(q); 3933 } 3934 } 3935 3936 /** 3937 * Performs early processing of post-ime input events. 3938 */ 3939 final class EarlyPostImeInputStage extends InputStage { 3940 public EarlyPostImeInputStage(InputStage next) { 3941 super(next); 3942 } 3943 3944 @Override 3945 protected int onProcess(QueuedInputEvent q) { 3946 if (q.mEvent instanceof KeyEvent) { 3947 return processKeyEvent(q); 3948 } else { 3949 final int source = q.mEvent.getSource(); 3950 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 3951 return processPointerEvent(q); 3952 } 3953 } 3954 return FORWARD; 3955 } 3956 3957 private int processKeyEvent(QueuedInputEvent q) { 3958 final KeyEvent event = (KeyEvent)q.mEvent; 3959 3960 // If the key's purpose is to exit touch mode then we consume it 3961 // and consider it handled. 3962 if (checkForLeavingTouchModeAndConsume(event)) { 3963 return FINISH_HANDLED; 3964 } 3965 3966 // Make sure the fallback event policy sees all keys that will be 3967 // delivered to the view hierarchy. 3968 mFallbackEventHandler.preDispatchKeyEvent(event); 3969 return FORWARD; 3970 } 3971 3972 private int processPointerEvent(QueuedInputEvent q) { 3973 final MotionEvent event = (MotionEvent)q.mEvent; 3974 3975 // Translate the pointer event for compatibility, if needed. 3976 if (mTranslator != null) { 3977 mTranslator.translateEventInScreenToAppWindow(event); 3978 } 3979 3980 // Enter touch mode on down or scroll. 3981 final int action = event.getAction(); 3982 if (action == MotionEvent.ACTION_DOWN || action == MotionEvent.ACTION_SCROLL) { 3983 ensureTouchMode(true); 3984 } 3985 3986 // Offset the scroll position. 3987 if (mCurScrollY != 0) { 3988 event.offsetLocation(0, mCurScrollY); 3989 } 3990 3991 // Remember the touch position for possible drag-initiation. 3992 if (event.isTouchEvent()) { 3993 mLastTouchPoint.x = event.getRawX(); 3994 mLastTouchPoint.y = event.getRawY(); 3995 } 3996 return FORWARD; 3997 } 3998 } 3999 4000 /** 4001 * Delivers post-ime input events to a native activity. 4002 */ 4003 final class NativePostImeInputStage extends AsyncInputStage 4004 implements InputQueue.FinishedInputEventCallback { 4005 public NativePostImeInputStage(InputStage next, String traceCounter) { 4006 super(next, traceCounter); 4007 } 4008 4009 @Override 4010 protected int onProcess(QueuedInputEvent q) { 4011 if (mInputQueue != null) { 4012 mInputQueue.sendInputEvent(q.mEvent, q, false, this); 4013 return DEFER; 4014 } 4015 return FORWARD; 4016 } 4017 4018 @Override 4019 public void onFinishedInputEvent(Object token, boolean handled) { 4020 QueuedInputEvent q = (QueuedInputEvent)token; 4021 if (handled) { 4022 finish(q, true); 4023 return; 4024 } 4025 forward(q); 4026 } 4027 } 4028 4029 /** 4030 * Delivers post-ime input events to the view hierarchy. 4031 */ 4032 final class ViewPostImeInputStage extends InputStage { 4033 public ViewPostImeInputStage(InputStage next) { 4034 super(next); 4035 } 4036 4037 @Override 4038 protected int onProcess(QueuedInputEvent q) { 4039 if (q.mEvent instanceof KeyEvent) { 4040 return processKeyEvent(q); 4041 } else { 4042 // If delivering a new non-key event, make sure the window is 4043 // now allowed to start updating. 4044 handleDispatchWindowAnimationStopped(); 4045 final int source = q.mEvent.getSource(); 4046 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 4047 return processPointerEvent(q); 4048 } else if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 4049 return processTrackballEvent(q); 4050 } else { 4051 return processGenericMotionEvent(q); 4052 } 4053 } 4054 } 4055 4056 @Override 4057 protected void onDeliverToNext(QueuedInputEvent q) { 4058 if (mUnbufferedInputDispatch 4059 && q.mEvent instanceof MotionEvent 4060 && ((MotionEvent)q.mEvent).isTouchEvent() 4061 && isTerminalInputEvent(q.mEvent)) { 4062 mUnbufferedInputDispatch = false; 4063 scheduleConsumeBatchedInput(); 4064 } 4065 super.onDeliverToNext(q); 4066 } 4067 4068 private int processKeyEvent(QueuedInputEvent q) { 4069 final KeyEvent event = (KeyEvent)q.mEvent; 4070 4071 if (event.getAction() != KeyEvent.ACTION_UP) { 4072 // If delivering a new key event, make sure the window is 4073 // now allowed to start updating. 4074 handleDispatchWindowAnimationStopped(); 4075 } 4076 4077 // Deliver the key to the view hierarchy. 4078 if (mView.dispatchKeyEvent(event)) { 4079 return FINISH_HANDLED; 4080 } 4081 4082 if (shouldDropInputEvent(q)) { 4083 return FINISH_NOT_HANDLED; 4084 } 4085 4086 // If the Control modifier is held, try to interpret the key as a shortcut. 4087 if (event.getAction() == KeyEvent.ACTION_DOWN 4088 && event.isCtrlPressed() 4089 && event.getRepeatCount() == 0 4090 && !KeyEvent.isModifierKey(event.getKeyCode())) { 4091 if (mView.dispatchKeyShortcutEvent(event)) { 4092 return FINISH_HANDLED; 4093 } 4094 if (shouldDropInputEvent(q)) { 4095 return FINISH_NOT_HANDLED; 4096 } 4097 } 4098 4099 // Apply the fallback event policy. 4100 if (mFallbackEventHandler.dispatchKeyEvent(event)) { 4101 return FINISH_HANDLED; 4102 } 4103 if (shouldDropInputEvent(q)) { 4104 return FINISH_NOT_HANDLED; 4105 } 4106 4107 // Handle automatic focus changes. 4108 if (event.getAction() == KeyEvent.ACTION_DOWN) { 4109 int direction = 0; 4110 switch (event.getKeyCode()) { 4111 case KeyEvent.KEYCODE_DPAD_LEFT: 4112 if (event.hasNoModifiers()) { 4113 direction = View.FOCUS_LEFT; 4114 } 4115 break; 4116 case KeyEvent.KEYCODE_DPAD_RIGHT: 4117 if (event.hasNoModifiers()) { 4118 direction = View.FOCUS_RIGHT; 4119 } 4120 break; 4121 case KeyEvent.KEYCODE_DPAD_UP: 4122 if (event.hasNoModifiers()) { 4123 direction = View.FOCUS_UP; 4124 } 4125 break; 4126 case KeyEvent.KEYCODE_DPAD_DOWN: 4127 if (event.hasNoModifiers()) { 4128 direction = View.FOCUS_DOWN; 4129 } 4130 break; 4131 case KeyEvent.KEYCODE_TAB: 4132 if (event.hasNoModifiers()) { 4133 direction = View.FOCUS_FORWARD; 4134 } else if (event.hasModifiers(KeyEvent.META_SHIFT_ON)) { 4135 direction = View.FOCUS_BACKWARD; 4136 } 4137 break; 4138 } 4139 if (direction != 0) { 4140 View focused = mView.findFocus(); 4141 if (focused != null) { 4142 View v = focused.focusSearch(direction); 4143 if (v != null && v != focused) { 4144 // do the math the get the interesting rect 4145 // of previous focused into the coord system of 4146 // newly focused view 4147 focused.getFocusedRect(mTempRect); 4148 if (mView instanceof ViewGroup) { 4149 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 4150 focused, mTempRect); 4151 ((ViewGroup) mView).offsetRectIntoDescendantCoords( 4152 v, mTempRect); 4153 } 4154 if (v.requestFocus(direction, mTempRect)) { 4155 playSoundEffect(SoundEffectConstants 4156 .getContantForFocusDirection(direction)); 4157 return FINISH_HANDLED; 4158 } 4159 } 4160 4161 // Give the focused view a last chance to handle the dpad key. 4162 if (mView.dispatchUnhandledMove(focused, direction)) { 4163 return FINISH_HANDLED; 4164 } 4165 } else { 4166 // find the best view to give focus to in this non-touch-mode with no-focus 4167 View v = focusSearch(null, direction); 4168 if (v != null && v.requestFocus(direction)) { 4169 return FINISH_HANDLED; 4170 } 4171 } 4172 } 4173 } 4174 return FORWARD; 4175 } 4176 4177 private int processPointerEvent(QueuedInputEvent q) { 4178 final MotionEvent event = (MotionEvent)q.mEvent; 4179 4180 mAttachInfo.mUnbufferedDispatchRequested = false; 4181 boolean handled = mView.dispatchPointerEvent(event); 4182 if (mAttachInfo.mUnbufferedDispatchRequested && !mUnbufferedInputDispatch) { 4183 mUnbufferedInputDispatch = true; 4184 if (mConsumeBatchedInputScheduled) { 4185 scheduleConsumeBatchedInputImmediately(); 4186 } 4187 } 4188 return handled ? FINISH_HANDLED : FORWARD; 4189 } 4190 4191 private int processTrackballEvent(QueuedInputEvent q) { 4192 final MotionEvent event = (MotionEvent)q.mEvent; 4193 4194 if (mView.dispatchTrackballEvent(event)) { 4195 return FINISH_HANDLED; 4196 } 4197 return FORWARD; 4198 } 4199 4200 private int processGenericMotionEvent(QueuedInputEvent q) { 4201 final MotionEvent event = (MotionEvent)q.mEvent; 4202 4203 // Deliver the event to the view. 4204 if (mView.dispatchGenericMotionEvent(event)) { 4205 return FINISH_HANDLED; 4206 } 4207 return FORWARD; 4208 } 4209 } 4210 4211 /** 4212 * Performs synthesis of new input events from unhandled input events. 4213 */ 4214 final class SyntheticInputStage extends InputStage { 4215 private final SyntheticTrackballHandler mTrackball = new SyntheticTrackballHandler(); 4216 private final SyntheticJoystickHandler mJoystick = new SyntheticJoystickHandler(); 4217 private final SyntheticTouchNavigationHandler mTouchNavigation = 4218 new SyntheticTouchNavigationHandler(); 4219 private final SyntheticKeyboardHandler mKeyboard = new SyntheticKeyboardHandler(); 4220 4221 public SyntheticInputStage() { 4222 super(null); 4223 } 4224 4225 @Override 4226 protected int onProcess(QueuedInputEvent q) { 4227 q.mFlags |= QueuedInputEvent.FLAG_RESYNTHESIZED; 4228 if (q.mEvent instanceof MotionEvent) { 4229 final MotionEvent event = (MotionEvent)q.mEvent; 4230 final int source = event.getSource(); 4231 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 4232 mTrackball.process(event); 4233 return FINISH_HANDLED; 4234 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 4235 mJoystick.process(event); 4236 return FINISH_HANDLED; 4237 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 4238 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 4239 mTouchNavigation.process(event); 4240 return FINISH_HANDLED; 4241 } 4242 } else if ((q.mFlags & QueuedInputEvent.FLAG_UNHANDLED) != 0) { 4243 mKeyboard.process((KeyEvent)q.mEvent); 4244 return FINISH_HANDLED; 4245 } 4246 4247 return FORWARD; 4248 } 4249 4250 @Override 4251 protected void onDeliverToNext(QueuedInputEvent q) { 4252 if ((q.mFlags & QueuedInputEvent.FLAG_RESYNTHESIZED) == 0) { 4253 // Cancel related synthetic events if any prior stage has handled the event. 4254 if (q.mEvent instanceof MotionEvent) { 4255 final MotionEvent event = (MotionEvent)q.mEvent; 4256 final int source = event.getSource(); 4257 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 4258 mTrackball.cancel(event); 4259 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 4260 mJoystick.cancel(event); 4261 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 4262 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 4263 mTouchNavigation.cancel(event); 4264 } 4265 } 4266 } 4267 super.onDeliverToNext(q); 4268 } 4269 } 4270 4271 /** 4272 * Creates dpad events from unhandled trackball movements. 4273 */ 4274 final class SyntheticTrackballHandler { 4275 private final TrackballAxis mX = new TrackballAxis(); 4276 private final TrackballAxis mY = new TrackballAxis(); 4277 private long mLastTime; 4278 4279 public void process(MotionEvent event) { 4280 // Translate the trackball event into DPAD keys and try to deliver those. 4281 long curTime = SystemClock.uptimeMillis(); 4282 if ((mLastTime + MAX_TRACKBALL_DELAY) < curTime) { 4283 // It has been too long since the last movement, 4284 // so restart at the beginning. 4285 mX.reset(0); 4286 mY.reset(0); 4287 mLastTime = curTime; 4288 } 4289 4290 final int action = event.getAction(); 4291 final int metaState = event.getMetaState(); 4292 switch (action) { 4293 case MotionEvent.ACTION_DOWN: 4294 mX.reset(2); 4295 mY.reset(2); 4296 enqueueInputEvent(new KeyEvent(curTime, curTime, 4297 KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 4298 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4299 InputDevice.SOURCE_KEYBOARD)); 4300 break; 4301 case MotionEvent.ACTION_UP: 4302 mX.reset(2); 4303 mY.reset(2); 4304 enqueueInputEvent(new KeyEvent(curTime, curTime, 4305 KeyEvent.ACTION_UP, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 4306 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4307 InputDevice.SOURCE_KEYBOARD)); 4308 break; 4309 } 4310 4311 if (DEBUG_TRACKBALL) Log.v(TAG, "TB X=" + mX.position + " step=" 4312 + mX.step + " dir=" + mX.dir + " acc=" + mX.acceleration 4313 + " move=" + event.getX() 4314 + " / Y=" + mY.position + " step=" 4315 + mY.step + " dir=" + mY.dir + " acc=" + mY.acceleration 4316 + " move=" + event.getY()); 4317 final float xOff = mX.collect(event.getX(), event.getEventTime(), "X"); 4318 final float yOff = mY.collect(event.getY(), event.getEventTime(), "Y"); 4319 4320 // Generate DPAD events based on the trackball movement. 4321 // We pick the axis that has moved the most as the direction of 4322 // the DPAD. When we generate DPAD events for one axis, then the 4323 // other axis is reset -- we don't want to perform DPAD jumps due 4324 // to slight movements in the trackball when making major movements 4325 // along the other axis. 4326 int keycode = 0; 4327 int movement = 0; 4328 float accel = 1; 4329 if (xOff > yOff) { 4330 movement = mX.generate(); 4331 if (movement != 0) { 4332 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_RIGHT 4333 : KeyEvent.KEYCODE_DPAD_LEFT; 4334 accel = mX.acceleration; 4335 mY.reset(2); 4336 } 4337 } else if (yOff > 0) { 4338 movement = mY.generate(); 4339 if (movement != 0) { 4340 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_DOWN 4341 : KeyEvent.KEYCODE_DPAD_UP; 4342 accel = mY.acceleration; 4343 mX.reset(2); 4344 } 4345 } 4346 4347 if (keycode != 0) { 4348 if (movement < 0) movement = -movement; 4349 int accelMovement = (int)(movement * accel); 4350 if (DEBUG_TRACKBALL) Log.v(TAG, "Move: movement=" + movement 4351 + " accelMovement=" + accelMovement 4352 + " accel=" + accel); 4353 if (accelMovement > movement) { 4354 if (DEBUG_TRACKBALL) Log.v(TAG, "Delivering fake DPAD: " 4355 + keycode); 4356 movement--; 4357 int repeatCount = accelMovement - movement; 4358 enqueueInputEvent(new KeyEvent(curTime, curTime, 4359 KeyEvent.ACTION_MULTIPLE, keycode, repeatCount, metaState, 4360 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4361 InputDevice.SOURCE_KEYBOARD)); 4362 } 4363 while (movement > 0) { 4364 if (DEBUG_TRACKBALL) Log.v(TAG, "Delivering fake DPAD: " 4365 + keycode); 4366 movement--; 4367 curTime = SystemClock.uptimeMillis(); 4368 enqueueInputEvent(new KeyEvent(curTime, curTime, 4369 KeyEvent.ACTION_DOWN, keycode, 0, metaState, 4370 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4371 InputDevice.SOURCE_KEYBOARD)); 4372 enqueueInputEvent(new KeyEvent(curTime, curTime, 4373 KeyEvent.ACTION_UP, keycode, 0, metaState, 4374 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4375 InputDevice.SOURCE_KEYBOARD)); 4376 } 4377 mLastTime = curTime; 4378 } 4379 } 4380 4381 public void cancel(MotionEvent event) { 4382 mLastTime = Integer.MIN_VALUE; 4383 4384 // If we reach this, we consumed a trackball event. 4385 // Because we will not translate the trackball event into a key event, 4386 // touch mode will not exit, so we exit touch mode here. 4387 if (mView != null && mAdded) { 4388 ensureTouchMode(false); 4389 } 4390 } 4391 } 4392 4393 /** 4394 * Maintains state information for a single trackball axis, generating 4395 * discrete (DPAD) movements based on raw trackball motion. 4396 */ 4397 static final class TrackballAxis { 4398 /** 4399 * The maximum amount of acceleration we will apply. 4400 */ 4401 static final float MAX_ACCELERATION = 20; 4402 4403 /** 4404 * The maximum amount of time (in milliseconds) between events in order 4405 * for us to consider the user to be doing fast trackball movements, 4406 * and thus apply an acceleration. 4407 */ 4408 static final long FAST_MOVE_TIME = 150; 4409 4410 /** 4411 * Scaling factor to the time (in milliseconds) between events to how 4412 * much to multiple/divide the current acceleration. When movement 4413 * is < FAST_MOVE_TIME this multiplies the acceleration; when > 4414 * FAST_MOVE_TIME it divides it. 4415 */ 4416 static final float ACCEL_MOVE_SCALING_FACTOR = (1.0f/40); 4417 4418 static final float FIRST_MOVEMENT_THRESHOLD = 0.5f; 4419 static final float SECOND_CUMULATIVE_MOVEMENT_THRESHOLD = 2.0f; 4420 static final float SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD = 1.0f; 4421 4422 float position; 4423 float acceleration = 1; 4424 long lastMoveTime = 0; 4425 int step; 4426 int dir; 4427 int nonAccelMovement; 4428 4429 void reset(int _step) { 4430 position = 0; 4431 acceleration = 1; 4432 lastMoveTime = 0; 4433 step = _step; 4434 dir = 0; 4435 } 4436 4437 /** 4438 * Add trackball movement into the state. If the direction of movement 4439 * has been reversed, the state is reset before adding the 4440 * movement (so that you don't have to compensate for any previously 4441 * collected movement before see the result of the movement in the 4442 * new direction). 4443 * 4444 * @return Returns the absolute value of the amount of movement 4445 * collected so far. 4446 */ 4447 float collect(float off, long time, String axis) { 4448 long normTime; 4449 if (off > 0) { 4450 normTime = (long)(off * FAST_MOVE_TIME); 4451 if (dir < 0) { 4452 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to positive!"); 4453 position = 0; 4454 step = 0; 4455 acceleration = 1; 4456 lastMoveTime = 0; 4457 } 4458 dir = 1; 4459 } else if (off < 0) { 4460 normTime = (long)((-off) * FAST_MOVE_TIME); 4461 if (dir > 0) { 4462 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to negative!"); 4463 position = 0; 4464 step = 0; 4465 acceleration = 1; 4466 lastMoveTime = 0; 4467 } 4468 dir = -1; 4469 } else { 4470 normTime = 0; 4471 } 4472 4473 // The number of milliseconds between each movement that is 4474 // considered "normal" and will not result in any acceleration 4475 // or deceleration, scaled by the offset we have here. 4476 if (normTime > 0) { 4477 long delta = time - lastMoveTime; 4478 lastMoveTime = time; 4479 float acc = acceleration; 4480 if (delta < normTime) { 4481 // The user is scrolling rapidly, so increase acceleration. 4482 float scale = (normTime-delta) * ACCEL_MOVE_SCALING_FACTOR; 4483 if (scale > 1) acc *= scale; 4484 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " accelerate: off=" 4485 + off + " normTime=" + normTime + " delta=" + delta 4486 + " scale=" + scale + " acc=" + acc); 4487 acceleration = acc < MAX_ACCELERATION ? acc : MAX_ACCELERATION; 4488 } else { 4489 // The user is scrolling slowly, so decrease acceleration. 4490 float scale = (delta-normTime) * ACCEL_MOVE_SCALING_FACTOR; 4491 if (scale > 1) acc /= scale; 4492 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " deccelerate: off=" 4493 + off + " normTime=" + normTime + " delta=" + delta 4494 + " scale=" + scale + " acc=" + acc); 4495 acceleration = acc > 1 ? acc : 1; 4496 } 4497 } 4498 position += off; 4499 return Math.abs(position); 4500 } 4501 4502 /** 4503 * Generate the number of discrete movement events appropriate for 4504 * the currently collected trackball movement. 4505 * 4506 * @return Returns the number of discrete movements, either positive 4507 * or negative, or 0 if there is not enough trackball movement yet 4508 * for a discrete movement. 4509 */ 4510 int generate() { 4511 int movement = 0; 4512 nonAccelMovement = 0; 4513 do { 4514 final int dir = position >= 0 ? 1 : -1; 4515 switch (step) { 4516 // If we are going to execute the first step, then we want 4517 // to do this as soon as possible instead of waiting for 4518 // a full movement, in order to make things look responsive. 4519 case 0: 4520 if (Math.abs(position) < FIRST_MOVEMENT_THRESHOLD) { 4521 return movement; 4522 } 4523 movement += dir; 4524 nonAccelMovement += dir; 4525 step = 1; 4526 break; 4527 // If we have generated the first movement, then we need 4528 // to wait for the second complete trackball motion before 4529 // generating the second discrete movement. 4530 case 1: 4531 if (Math.abs(position) < SECOND_CUMULATIVE_MOVEMENT_THRESHOLD) { 4532 return movement; 4533 } 4534 movement += dir; 4535 nonAccelMovement += dir; 4536 position -= SECOND_CUMULATIVE_MOVEMENT_THRESHOLD * dir; 4537 step = 2; 4538 break; 4539 // After the first two, we generate discrete movements 4540 // consistently with the trackball, applying an acceleration 4541 // if the trackball is moving quickly. This is a simple 4542 // acceleration on top of what we already compute based 4543 // on how quickly the wheel is being turned, to apply 4544 // a longer increasing acceleration to continuous movement 4545 // in one direction. 4546 default: 4547 if (Math.abs(position) < SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD) { 4548 return movement; 4549 } 4550 movement += dir; 4551 position -= dir * SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD; 4552 float acc = acceleration; 4553 acc *= 1.1f; 4554 acceleration = acc < MAX_ACCELERATION ? acc : acceleration; 4555 break; 4556 } 4557 } while (true); 4558 } 4559 } 4560 4561 /** 4562 * Creates dpad events from unhandled joystick movements. 4563 */ 4564 final class SyntheticJoystickHandler extends Handler { 4565 private final static String TAG = "SyntheticJoystickHandler"; 4566 private final static int MSG_ENQUEUE_X_AXIS_KEY_REPEAT = 1; 4567 private final static int MSG_ENQUEUE_Y_AXIS_KEY_REPEAT = 2; 4568 4569 private int mLastXDirection; 4570 private int mLastYDirection; 4571 private int mLastXKeyCode; 4572 private int mLastYKeyCode; 4573 4574 public SyntheticJoystickHandler() { 4575 super(true); 4576 } 4577 4578 @Override 4579 public void handleMessage(Message msg) { 4580 switch (msg.what) { 4581 case MSG_ENQUEUE_X_AXIS_KEY_REPEAT: 4582 case MSG_ENQUEUE_Y_AXIS_KEY_REPEAT: { 4583 KeyEvent oldEvent = (KeyEvent)msg.obj; 4584 KeyEvent e = KeyEvent.changeTimeRepeat(oldEvent, 4585 SystemClock.uptimeMillis(), 4586 oldEvent.getRepeatCount() + 1); 4587 if (mAttachInfo.mHasWindowFocus) { 4588 enqueueInputEvent(e); 4589 Message m = obtainMessage(msg.what, e); 4590 m.setAsynchronous(true); 4591 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatDelay()); 4592 } 4593 } break; 4594 } 4595 } 4596 4597 public void process(MotionEvent event) { 4598 switch(event.getActionMasked()) { 4599 case MotionEvent.ACTION_CANCEL: 4600 cancel(event); 4601 break; 4602 case MotionEvent.ACTION_MOVE: 4603 update(event, true); 4604 break; 4605 default: 4606 Log.w(TAG, "Unexpected action: " + event.getActionMasked()); 4607 } 4608 } 4609 4610 private void cancel(MotionEvent event) { 4611 removeMessages(MSG_ENQUEUE_X_AXIS_KEY_REPEAT); 4612 removeMessages(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT); 4613 update(event, false); 4614 } 4615 4616 private void update(MotionEvent event, boolean synthesizeNewKeys) { 4617 final long time = event.getEventTime(); 4618 final int metaState = event.getMetaState(); 4619 final int deviceId = event.getDeviceId(); 4620 final int source = event.getSource(); 4621 4622 int xDirection = joystickAxisValueToDirection( 4623 event.getAxisValue(MotionEvent.AXIS_HAT_X)); 4624 if (xDirection == 0) { 4625 xDirection = joystickAxisValueToDirection(event.getX()); 4626 } 4627 4628 int yDirection = joystickAxisValueToDirection( 4629 event.getAxisValue(MotionEvent.AXIS_HAT_Y)); 4630 if (yDirection == 0) { 4631 yDirection = joystickAxisValueToDirection(event.getY()); 4632 } 4633 4634 if (xDirection != mLastXDirection) { 4635 if (mLastXKeyCode != 0) { 4636 removeMessages(MSG_ENQUEUE_X_AXIS_KEY_REPEAT); 4637 enqueueInputEvent(new KeyEvent(time, time, 4638 KeyEvent.ACTION_UP, mLastXKeyCode, 0, metaState, 4639 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4640 mLastXKeyCode = 0; 4641 } 4642 4643 mLastXDirection = xDirection; 4644 4645 if (xDirection != 0 && synthesizeNewKeys) { 4646 mLastXKeyCode = xDirection > 0 4647 ? KeyEvent.KEYCODE_DPAD_RIGHT : KeyEvent.KEYCODE_DPAD_LEFT; 4648 final KeyEvent e = new KeyEvent(time, time, 4649 KeyEvent.ACTION_DOWN, mLastXKeyCode, 0, metaState, 4650 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4651 enqueueInputEvent(e); 4652 Message m = obtainMessage(MSG_ENQUEUE_X_AXIS_KEY_REPEAT, e); 4653 m.setAsynchronous(true); 4654 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4655 } 4656 } 4657 4658 if (yDirection != mLastYDirection) { 4659 if (mLastYKeyCode != 0) { 4660 removeMessages(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT); 4661 enqueueInputEvent(new KeyEvent(time, time, 4662 KeyEvent.ACTION_UP, mLastYKeyCode, 0, metaState, 4663 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4664 mLastYKeyCode = 0; 4665 } 4666 4667 mLastYDirection = yDirection; 4668 4669 if (yDirection != 0 && synthesizeNewKeys) { 4670 mLastYKeyCode = yDirection > 0 4671 ? KeyEvent.KEYCODE_DPAD_DOWN : KeyEvent.KEYCODE_DPAD_UP; 4672 final KeyEvent e = new KeyEvent(time, time, 4673 KeyEvent.ACTION_DOWN, mLastYKeyCode, 0, metaState, 4674 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4675 enqueueInputEvent(e); 4676 Message m = obtainMessage(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT, e); 4677 m.setAsynchronous(true); 4678 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4679 } 4680 } 4681 } 4682 4683 private int joystickAxisValueToDirection(float value) { 4684 if (value >= 0.5f) { 4685 return 1; 4686 } else if (value <= -0.5f) { 4687 return -1; 4688 } else { 4689 return 0; 4690 } 4691 } 4692 } 4693 4694 /** 4695 * Creates dpad events from unhandled touch navigation movements. 4696 */ 4697 final class SyntheticTouchNavigationHandler extends Handler { 4698 private static final String LOCAL_TAG = "SyntheticTouchNavigationHandler"; 4699 private static final boolean LOCAL_DEBUG = false; 4700 4701 // Assumed nominal width and height in millimeters of a touch navigation pad, 4702 // if no resolution information is available from the input system. 4703 private static final float DEFAULT_WIDTH_MILLIMETERS = 48; 4704 private static final float DEFAULT_HEIGHT_MILLIMETERS = 48; 4705 4706 /* TODO: These constants should eventually be moved to ViewConfiguration. */ 4707 4708 // The nominal distance traveled to move by one unit. 4709 private static final int TICK_DISTANCE_MILLIMETERS = 12; 4710 4711 // Minimum and maximum fling velocity in ticks per second. 4712 // The minimum velocity should be set such that we perform enough ticks per 4713 // second that the fling appears to be fluid. For example, if we set the minimum 4714 // to 2 ticks per second, then there may be up to half a second delay between the next 4715 // to last and last ticks which is noticeably discrete and jerky. This value should 4716 // probably not be set to anything less than about 4. 4717 // If fling accuracy is a problem then consider tuning the tick distance instead. 4718 private static final float MIN_FLING_VELOCITY_TICKS_PER_SECOND = 6f; 4719 private static final float MAX_FLING_VELOCITY_TICKS_PER_SECOND = 20f; 4720 4721 // Fling velocity decay factor applied after each new key is emitted. 4722 // This parameter controls the deceleration and overall duration of the fling. 4723 // The fling stops automatically when its velocity drops below the minimum 4724 // fling velocity defined above. 4725 private static final float FLING_TICK_DECAY = 0.8f; 4726 4727 /* The input device that we are tracking. */ 4728 4729 private int mCurrentDeviceId = -1; 4730 private int mCurrentSource; 4731 private boolean mCurrentDeviceSupported; 4732 4733 /* Configuration for the current input device. */ 4734 4735 // The scaled tick distance. A movement of this amount should generally translate 4736 // into a single dpad event in a given direction. 4737 private float mConfigTickDistance; 4738 4739 // The minimum and maximum scaled fling velocity. 4740 private float mConfigMinFlingVelocity; 4741 private float mConfigMaxFlingVelocity; 4742 4743 /* Tracking state. */ 4744 4745 // The velocity tracker for detecting flings. 4746 private VelocityTracker mVelocityTracker; 4747 4748 // The active pointer id, or -1 if none. 4749 private int mActivePointerId = -1; 4750 4751 // Location where tracking started. 4752 private float mStartX; 4753 private float mStartY; 4754 4755 // Most recently observed position. 4756 private float mLastX; 4757 private float mLastY; 4758 4759 // Accumulated movement delta since the last direction key was sent. 4760 private float mAccumulatedX; 4761 private float mAccumulatedY; 4762 4763 // Set to true if any movement was delivered to the app. 4764 // Implies that tap slop was exceeded. 4765 private boolean mConsumedMovement; 4766 4767 // The most recently sent key down event. 4768 // The keycode remains set until the direction changes or a fling ends 4769 // so that repeated key events may be generated as required. 4770 private long mPendingKeyDownTime; 4771 private int mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 4772 private int mPendingKeyRepeatCount; 4773 private int mPendingKeyMetaState; 4774 4775 // The current fling velocity while a fling is in progress. 4776 private boolean mFlinging; 4777 private float mFlingVelocity; 4778 4779 public SyntheticTouchNavigationHandler() { 4780 super(true); 4781 } 4782 4783 public void process(MotionEvent event) { 4784 // Update the current device information. 4785 final long time = event.getEventTime(); 4786 final int deviceId = event.getDeviceId(); 4787 final int source = event.getSource(); 4788 if (mCurrentDeviceId != deviceId || mCurrentSource != source) { 4789 finishKeys(time); 4790 finishTracking(time); 4791 mCurrentDeviceId = deviceId; 4792 mCurrentSource = source; 4793 mCurrentDeviceSupported = false; 4794 InputDevice device = event.getDevice(); 4795 if (device != null) { 4796 // In order to support an input device, we must know certain 4797 // characteristics about it, such as its size and resolution. 4798 InputDevice.MotionRange xRange = device.getMotionRange(MotionEvent.AXIS_X); 4799 InputDevice.MotionRange yRange = device.getMotionRange(MotionEvent.AXIS_Y); 4800 if (xRange != null && yRange != null) { 4801 mCurrentDeviceSupported = true; 4802 4803 // Infer the resolution if it not actually known. 4804 float xRes = xRange.getResolution(); 4805 if (xRes <= 0) { 4806 xRes = xRange.getRange() / DEFAULT_WIDTH_MILLIMETERS; 4807 } 4808 float yRes = yRange.getResolution(); 4809 if (yRes <= 0) { 4810 yRes = yRange.getRange() / DEFAULT_HEIGHT_MILLIMETERS; 4811 } 4812 float nominalRes = (xRes + yRes) * 0.5f; 4813 4814 // Precompute all of the configuration thresholds we will need. 4815 mConfigTickDistance = TICK_DISTANCE_MILLIMETERS * nominalRes; 4816 mConfigMinFlingVelocity = 4817 MIN_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 4818 mConfigMaxFlingVelocity = 4819 MAX_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 4820 4821 if (LOCAL_DEBUG) { 4822 Log.d(LOCAL_TAG, "Configured device " + mCurrentDeviceId 4823 + " (" + Integer.toHexString(mCurrentSource) + "): " 4824 + ", mConfigTickDistance=" + mConfigTickDistance 4825 + ", mConfigMinFlingVelocity=" + mConfigMinFlingVelocity 4826 + ", mConfigMaxFlingVelocity=" + mConfigMaxFlingVelocity); 4827 } 4828 } 4829 } 4830 } 4831 if (!mCurrentDeviceSupported) { 4832 return; 4833 } 4834 4835 // Handle the event. 4836 final int action = event.getActionMasked(); 4837 switch (action) { 4838 case MotionEvent.ACTION_DOWN: { 4839 boolean caughtFling = mFlinging; 4840 finishKeys(time); 4841 finishTracking(time); 4842 mActivePointerId = event.getPointerId(0); 4843 mVelocityTracker = VelocityTracker.obtain(); 4844 mVelocityTracker.addMovement(event); 4845 mStartX = event.getX(); 4846 mStartY = event.getY(); 4847 mLastX = mStartX; 4848 mLastY = mStartY; 4849 mAccumulatedX = 0; 4850 mAccumulatedY = 0; 4851 4852 // If we caught a fling, then pretend that the tap slop has already 4853 // been exceeded to suppress taps whose only purpose is to stop the fling. 4854 mConsumedMovement = caughtFling; 4855 break; 4856 } 4857 4858 case MotionEvent.ACTION_MOVE: 4859 case MotionEvent.ACTION_UP: { 4860 if (mActivePointerId < 0) { 4861 break; 4862 } 4863 final int index = event.findPointerIndex(mActivePointerId); 4864 if (index < 0) { 4865 finishKeys(time); 4866 finishTracking(time); 4867 break; 4868 } 4869 4870 mVelocityTracker.addMovement(event); 4871 final float x = event.getX(index); 4872 final float y = event.getY(index); 4873 mAccumulatedX += x - mLastX; 4874 mAccumulatedY += y - mLastY; 4875 mLastX = x; 4876 mLastY = y; 4877 4878 // Consume any accumulated movement so far. 4879 final int metaState = event.getMetaState(); 4880 consumeAccumulatedMovement(time, metaState); 4881 4882 // Detect taps and flings. 4883 if (action == MotionEvent.ACTION_UP) { 4884 if (mConsumedMovement && mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 4885 // It might be a fling. 4886 mVelocityTracker.computeCurrentVelocity(1000, mConfigMaxFlingVelocity); 4887 final float vx = mVelocityTracker.getXVelocity(mActivePointerId); 4888 final float vy = mVelocityTracker.getYVelocity(mActivePointerId); 4889 if (!startFling(time, vx, vy)) { 4890 finishKeys(time); 4891 } 4892 } 4893 finishTracking(time); 4894 } 4895 break; 4896 } 4897 4898 case MotionEvent.ACTION_CANCEL: { 4899 finishKeys(time); 4900 finishTracking(time); 4901 break; 4902 } 4903 } 4904 } 4905 4906 public void cancel(MotionEvent event) { 4907 if (mCurrentDeviceId == event.getDeviceId() 4908 && mCurrentSource == event.getSource()) { 4909 final long time = event.getEventTime(); 4910 finishKeys(time); 4911 finishTracking(time); 4912 } 4913 } 4914 4915 private void finishKeys(long time) { 4916 cancelFling(); 4917 sendKeyUp(time); 4918 } 4919 4920 private void finishTracking(long time) { 4921 if (mActivePointerId >= 0) { 4922 mActivePointerId = -1; 4923 mVelocityTracker.recycle(); 4924 mVelocityTracker = null; 4925 } 4926 } 4927 4928 private void consumeAccumulatedMovement(long time, int metaState) { 4929 final float absX = Math.abs(mAccumulatedX); 4930 final float absY = Math.abs(mAccumulatedY); 4931 if (absX >= absY) { 4932 if (absX >= mConfigTickDistance) { 4933 mAccumulatedX = consumeAccumulatedMovement(time, metaState, mAccumulatedX, 4934 KeyEvent.KEYCODE_DPAD_LEFT, KeyEvent.KEYCODE_DPAD_RIGHT); 4935 mAccumulatedY = 0; 4936 mConsumedMovement = true; 4937 } 4938 } else { 4939 if (absY >= mConfigTickDistance) { 4940 mAccumulatedY = consumeAccumulatedMovement(time, metaState, mAccumulatedY, 4941 KeyEvent.KEYCODE_DPAD_UP, KeyEvent.KEYCODE_DPAD_DOWN); 4942 mAccumulatedX = 0; 4943 mConsumedMovement = true; 4944 } 4945 } 4946 } 4947 4948 private float consumeAccumulatedMovement(long time, int metaState, 4949 float accumulator, int negativeKeyCode, int positiveKeyCode) { 4950 while (accumulator <= -mConfigTickDistance) { 4951 sendKeyDownOrRepeat(time, negativeKeyCode, metaState); 4952 accumulator += mConfigTickDistance; 4953 } 4954 while (accumulator >= mConfigTickDistance) { 4955 sendKeyDownOrRepeat(time, positiveKeyCode, metaState); 4956 accumulator -= mConfigTickDistance; 4957 } 4958 return accumulator; 4959 } 4960 4961 private void sendKeyDownOrRepeat(long time, int keyCode, int metaState) { 4962 if (mPendingKeyCode != keyCode) { 4963 sendKeyUp(time); 4964 mPendingKeyDownTime = time; 4965 mPendingKeyCode = keyCode; 4966 mPendingKeyRepeatCount = 0; 4967 } else { 4968 mPendingKeyRepeatCount += 1; 4969 } 4970 mPendingKeyMetaState = metaState; 4971 4972 // Note: Normally we would pass FLAG_LONG_PRESS when the repeat count is 1 4973 // but it doesn't quite make sense when simulating the events in this way. 4974 if (LOCAL_DEBUG) { 4975 Log.d(LOCAL_TAG, "Sending key down: keyCode=" + mPendingKeyCode 4976 + ", repeatCount=" + mPendingKeyRepeatCount 4977 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 4978 } 4979 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 4980 KeyEvent.ACTION_DOWN, mPendingKeyCode, mPendingKeyRepeatCount, 4981 mPendingKeyMetaState, mCurrentDeviceId, 4982 KeyEvent.FLAG_FALLBACK, mCurrentSource)); 4983 } 4984 4985 private void sendKeyUp(long time) { 4986 if (mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 4987 if (LOCAL_DEBUG) { 4988 Log.d(LOCAL_TAG, "Sending key up: keyCode=" + mPendingKeyCode 4989 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 4990 } 4991 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 4992 KeyEvent.ACTION_UP, mPendingKeyCode, 0, mPendingKeyMetaState, 4993 mCurrentDeviceId, 0, KeyEvent.FLAG_FALLBACK, 4994 mCurrentSource)); 4995 mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 4996 } 4997 } 4998 4999 private boolean startFling(long time, float vx, float vy) { 5000 if (LOCAL_DEBUG) { 5001 Log.d(LOCAL_TAG, "Considering fling: vx=" + vx + ", vy=" + vy 5002 + ", min=" + mConfigMinFlingVelocity); 5003 } 5004 5005 // Flings must be oriented in the same direction as the preceding movements. 5006 switch (mPendingKeyCode) { 5007 case KeyEvent.KEYCODE_DPAD_LEFT: 5008 if (-vx >= mConfigMinFlingVelocity 5009 && Math.abs(vy) < mConfigMinFlingVelocity) { 5010 mFlingVelocity = -vx; 5011 break; 5012 } 5013 return false; 5014 5015 case KeyEvent.KEYCODE_DPAD_RIGHT: 5016 if (vx >= mConfigMinFlingVelocity 5017 && Math.abs(vy) < mConfigMinFlingVelocity) { 5018 mFlingVelocity = vx; 5019 break; 5020 } 5021 return false; 5022 5023 case KeyEvent.KEYCODE_DPAD_UP: 5024 if (-vy >= mConfigMinFlingVelocity 5025 && Math.abs(vx) < mConfigMinFlingVelocity) { 5026 mFlingVelocity = -vy; 5027 break; 5028 } 5029 return false; 5030 5031 case KeyEvent.KEYCODE_DPAD_DOWN: 5032 if (vy >= mConfigMinFlingVelocity 5033 && Math.abs(vx) < mConfigMinFlingVelocity) { 5034 mFlingVelocity = vy; 5035 break; 5036 } 5037 return false; 5038 } 5039 5040 // Post the first fling event. 5041 mFlinging = postFling(time); 5042 return mFlinging; 5043 } 5044 5045 private boolean postFling(long time) { 5046 // The idea here is to estimate the time when the pointer would have 5047 // traveled one tick distance unit given the current fling velocity. 5048 // This effect creates continuity of motion. 5049 if (mFlingVelocity >= mConfigMinFlingVelocity) { 5050 long delay = (long)(mConfigTickDistance / mFlingVelocity * 1000); 5051 postAtTime(mFlingRunnable, time + delay); 5052 if (LOCAL_DEBUG) { 5053 Log.d(LOCAL_TAG, "Posted fling: velocity=" 5054 + mFlingVelocity + ", delay=" + delay 5055 + ", keyCode=" + mPendingKeyCode); 5056 } 5057 return true; 5058 } 5059 return false; 5060 } 5061 5062 private void cancelFling() { 5063 if (mFlinging) { 5064 removeCallbacks(mFlingRunnable); 5065 mFlinging = false; 5066 } 5067 } 5068 5069 private final Runnable mFlingRunnable = new Runnable() { 5070 @Override 5071 public void run() { 5072 final long time = SystemClock.uptimeMillis(); 5073 sendKeyDownOrRepeat(time, mPendingKeyCode, mPendingKeyMetaState); 5074 mFlingVelocity *= FLING_TICK_DECAY; 5075 if (!postFling(time)) { 5076 mFlinging = false; 5077 finishKeys(time); 5078 } 5079 } 5080 }; 5081 } 5082 5083 final class SyntheticKeyboardHandler { 5084 public void process(KeyEvent event) { 5085 if ((event.getFlags() & KeyEvent.FLAG_FALLBACK) != 0) { 5086 return; 5087 } 5088 5089 final KeyCharacterMap kcm = event.getKeyCharacterMap(); 5090 final int keyCode = event.getKeyCode(); 5091 final int metaState = event.getMetaState(); 5092 5093 // Check for fallback actions specified by the key character map. 5094 KeyCharacterMap.FallbackAction fallbackAction = 5095 kcm.getFallbackAction(keyCode, metaState); 5096 if (fallbackAction != null) { 5097 final int flags = event.getFlags() | KeyEvent.FLAG_FALLBACK; 5098 KeyEvent fallbackEvent = KeyEvent.obtain( 5099 event.getDownTime(), event.getEventTime(), 5100 event.getAction(), fallbackAction.keyCode, 5101 event.getRepeatCount(), fallbackAction.metaState, 5102 event.getDeviceId(), event.getScanCode(), 5103 flags, event.getSource(), null); 5104 fallbackAction.recycle(); 5105 enqueueInputEvent(fallbackEvent); 5106 } 5107 } 5108 } 5109 5110 /** 5111 * Returns true if the key is used for keyboard navigation. 5112 * @param keyEvent The key event. 5113 * @return True if the key is used for keyboard navigation. 5114 */ 5115 private static boolean isNavigationKey(KeyEvent keyEvent) { 5116 switch (keyEvent.getKeyCode()) { 5117 case KeyEvent.KEYCODE_DPAD_LEFT: 5118 case KeyEvent.KEYCODE_DPAD_RIGHT: 5119 case KeyEvent.KEYCODE_DPAD_UP: 5120 case KeyEvent.KEYCODE_DPAD_DOWN: 5121 case KeyEvent.KEYCODE_DPAD_CENTER: 5122 case KeyEvent.KEYCODE_PAGE_UP: 5123 case KeyEvent.KEYCODE_PAGE_DOWN: 5124 case KeyEvent.KEYCODE_MOVE_HOME: 5125 case KeyEvent.KEYCODE_MOVE_END: 5126 case KeyEvent.KEYCODE_TAB: 5127 case KeyEvent.KEYCODE_SPACE: 5128 case KeyEvent.KEYCODE_ENTER: 5129 return true; 5130 } 5131 return false; 5132 } 5133 5134 /** 5135 * Returns true if the key is used for typing. 5136 * @param keyEvent The key event. 5137 * @return True if the key is used for typing. 5138 */ 5139 private static boolean isTypingKey(KeyEvent keyEvent) { 5140 return keyEvent.getUnicodeChar() > 0; 5141 } 5142 5143 /** 5144 * See if the key event means we should leave touch mode (and leave touch mode if so). 5145 * @param event The key event. 5146 * @return Whether this key event should be consumed (meaning the act of 5147 * leaving touch mode alone is considered the event). 5148 */ 5149 private boolean checkForLeavingTouchModeAndConsume(KeyEvent event) { 5150 // Only relevant in touch mode. 5151 if (!mAttachInfo.mInTouchMode) { 5152 return false; 5153 } 5154 5155 // Only consider leaving touch mode on DOWN or MULTIPLE actions, never on UP. 5156 final int action = event.getAction(); 5157 if (action != KeyEvent.ACTION_DOWN && action != KeyEvent.ACTION_MULTIPLE) { 5158 return false; 5159 } 5160 5161 // Don't leave touch mode if the IME told us not to. 5162 if ((event.getFlags() & KeyEvent.FLAG_KEEP_TOUCH_MODE) != 0) { 5163 return false; 5164 } 5165 5166 // If the key can be used for keyboard navigation then leave touch mode 5167 // and select a focused view if needed (in ensureTouchMode). 5168 // When a new focused view is selected, we consume the navigation key because 5169 // navigation doesn't make much sense unless a view already has focus so 5170 // the key's purpose is to set focus. 5171 if (isNavigationKey(event)) { 5172 return ensureTouchMode(false); 5173 } 5174 5175 // If the key can be used for typing then leave touch mode 5176 // and select a focused view if needed (in ensureTouchMode). 5177 // Always allow the view to process the typing key. 5178 if (isTypingKey(event)) { 5179 ensureTouchMode(false); 5180 return false; 5181 } 5182 5183 return false; 5184 } 5185 5186 /* drag/drop */ 5187 void setLocalDragState(Object obj) { 5188 mLocalDragState = obj; 5189 } 5190 5191 private void handleDragEvent(DragEvent event) { 5192 // From the root, only drag start/end/location are dispatched. entered/exited 5193 // are determined and dispatched by the viewgroup hierarchy, who then report 5194 // that back here for ultimate reporting back to the framework. 5195 if (mView != null && mAdded) { 5196 final int what = event.mAction; 5197 5198 if (what == DragEvent.ACTION_DRAG_EXITED) { 5199 // A direct EXITED event means that the window manager knows we've just crossed 5200 // a window boundary, so the current drag target within this one must have 5201 // just been exited. Send it the usual notifications and then we're done 5202 // for now. 5203 mView.dispatchDragEvent(event); 5204 } else { 5205 // Cache the drag description when the operation starts, then fill it in 5206 // on subsequent calls as a convenience 5207 if (what == DragEvent.ACTION_DRAG_STARTED) { 5208 mCurrentDragView = null; // Start the current-recipient tracking 5209 mDragDescription = event.mClipDescription; 5210 } else { 5211 event.mClipDescription = mDragDescription; 5212 } 5213 5214 // For events with a [screen] location, translate into window coordinates 5215 if ((what == DragEvent.ACTION_DRAG_LOCATION) || (what == DragEvent.ACTION_DROP)) { 5216 mDragPoint.set(event.mX, event.mY); 5217 if (mTranslator != null) { 5218 mTranslator.translatePointInScreenToAppWindow(mDragPoint); 5219 } 5220 5221 if (mCurScrollY != 0) { 5222 mDragPoint.offset(0, mCurScrollY); 5223 } 5224 5225 event.mX = mDragPoint.x; 5226 event.mY = mDragPoint.y; 5227 } 5228 5229 // Remember who the current drag target is pre-dispatch 5230 final View prevDragView = mCurrentDragView; 5231 5232 // Now dispatch the drag/drop event 5233 boolean result = mView.dispatchDragEvent(event); 5234 5235 // If we changed apparent drag target, tell the OS about it 5236 if (prevDragView != mCurrentDragView) { 5237 try { 5238 if (prevDragView != null) { 5239 mWindowSession.dragRecipientExited(mWindow); 5240 } 5241 if (mCurrentDragView != null) { 5242 mWindowSession.dragRecipientEntered(mWindow); 5243 } 5244 } catch (RemoteException e) { 5245 Slog.e(TAG, "Unable to note drag target change"); 5246 } 5247 } 5248 5249 // Report the drop result when we're done 5250 if (what == DragEvent.ACTION_DROP) { 5251 mDragDescription = null; 5252 try { 5253 Log.i(TAG, "Reporting drop result: " + result); 5254 mWindowSession.reportDropResult(mWindow, result); 5255 } catch (RemoteException e) { 5256 Log.e(TAG, "Unable to report drop result"); 5257 } 5258 } 5259 5260 // When the drag operation ends, release any local state object 5261 // that may have been in use 5262 if (what == DragEvent.ACTION_DRAG_ENDED) { 5263 setLocalDragState(null); 5264 } 5265 } 5266 } 5267 event.recycle(); 5268 } 5269 5270 public void handleDispatchSystemUiVisibilityChanged(SystemUiVisibilityInfo args) { 5271 if (mSeq != args.seq) { 5272 // The sequence has changed, so we need to update our value and make 5273 // sure to do a traversal afterward so the window manager is given our 5274 // most recent data. 5275 mSeq = args.seq; 5276 mAttachInfo.mForceReportNewAttributes = true; 5277 scheduleTraversals(); 5278 } 5279 if (mView == null) return; 5280 if (args.localChanges != 0) { 5281 mView.updateLocalSystemUiVisibility(args.localValue, args.localChanges); 5282 } 5283 5284 int visibility = args.globalVisibility&View.SYSTEM_UI_CLEARABLE_FLAGS; 5285 if (visibility != mAttachInfo.mGlobalSystemUiVisibility) { 5286 mAttachInfo.mGlobalSystemUiVisibility = visibility; 5287 mView.dispatchSystemUiVisibilityChanged(visibility); 5288 } 5289 } 5290 5291 public void handleDispatchWindowAnimationStarted(int remainingFrameCount) { 5292 if (!mDrawDuringWindowsAnimating) { 5293 mRemainingFrameCount = remainingFrameCount; 5294 mWindowsAnimating = true; 5295 } 5296 } 5297 5298 public void handleDispatchWindowAnimationStopped() { 5299 if (mWindowsAnimating) { 5300 mWindowsAnimating = false; 5301 if (!mDirty.isEmpty() || mIsAnimating || mFullRedrawNeeded) { 5302 scheduleTraversals(); 5303 } 5304 } 5305 } 5306 5307 public void handleDispatchWindowShown() { 5308 mAttachInfo.mTreeObserver.dispatchOnWindowShown(); 5309 } 5310 5311 public void getLastTouchPoint(Point outLocation) { 5312 outLocation.x = (int) mLastTouchPoint.x; 5313 outLocation.y = (int) mLastTouchPoint.y; 5314 } 5315 5316 public void setDragFocus(View newDragTarget) { 5317 if (mCurrentDragView != newDragTarget) { 5318 mCurrentDragView = newDragTarget; 5319 } 5320 } 5321 5322 private AudioManager getAudioManager() { 5323 if (mView == null) { 5324 throw new IllegalStateException("getAudioManager called when there is no mView"); 5325 } 5326 if (mAudioManager == null) { 5327 mAudioManager = (AudioManager) mView.getContext().getSystemService(Context.AUDIO_SERVICE); 5328 } 5329 return mAudioManager; 5330 } 5331 5332 public AccessibilityInteractionController getAccessibilityInteractionController() { 5333 if (mView == null) { 5334 throw new IllegalStateException("getAccessibilityInteractionController" 5335 + " called when there is no mView"); 5336 } 5337 if (mAccessibilityInteractionController == null) { 5338 mAccessibilityInteractionController = new AccessibilityInteractionController(this); 5339 } 5340 return mAccessibilityInteractionController; 5341 } 5342 5343 private int relayoutWindow(WindowManager.LayoutParams params, int viewVisibility, 5344 boolean insetsPending) throws RemoteException { 5345 5346 float appScale = mAttachInfo.mApplicationScale; 5347 boolean restore = false; 5348 if (params != null && mTranslator != null) { 5349 restore = true; 5350 params.backup(); 5351 mTranslator.translateWindowLayout(params); 5352 } 5353 if (params != null) { 5354 if (DBG) Log.d(TAG, "WindowLayout in layoutWindow:" + params); 5355 } 5356 mPendingConfiguration.seq = 0; 5357 //Log.d(TAG, ">>>>>> CALLING relayout"); 5358 if (params != null && mOrigWindowType != params.type) { 5359 // For compatibility with old apps, don't crash here. 5360 if (mTargetSdkVersion < Build.VERSION_CODES.ICE_CREAM_SANDWICH) { 5361 Slog.w(TAG, "Window type can not be changed after " 5362 + "the window is added; ignoring change of " + mView); 5363 params.type = mOrigWindowType; 5364 } 5365 } 5366 int relayoutResult = mWindowSession.relayout( 5367 mWindow, mSeq, params, 5368 (int) (mView.getMeasuredWidth() * appScale + 0.5f), 5369 (int) (mView.getMeasuredHeight() * appScale + 0.5f), 5370 viewVisibility, insetsPending ? WindowManagerGlobal.RELAYOUT_INSETS_PENDING : 0, 5371 mWinFrame, mPendingOverscanInsets, mPendingContentInsets, mPendingVisibleInsets, 5372 mPendingStableInsets, mPendingConfiguration, mSurface); 5373 //Log.d(TAG, "<<<<<< BACK FROM relayout"); 5374 if (restore) { 5375 params.restore(); 5376 } 5377 5378 if (mTranslator != null) { 5379 mTranslator.translateRectInScreenToAppWinFrame(mWinFrame); 5380 mTranslator.translateRectInScreenToAppWindow(mPendingOverscanInsets); 5381 mTranslator.translateRectInScreenToAppWindow(mPendingContentInsets); 5382 mTranslator.translateRectInScreenToAppWindow(mPendingVisibleInsets); 5383 mTranslator.translateRectInScreenToAppWindow(mPendingStableInsets); 5384 } 5385 return relayoutResult; 5386 } 5387 5388 /** 5389 * {@inheritDoc} 5390 */ 5391 @Override 5392 public void playSoundEffect(int effectId) { 5393 checkThread(); 5394 5395 try { 5396 final AudioManager audioManager = getAudioManager(); 5397 5398 switch (effectId) { 5399 case SoundEffectConstants.CLICK: 5400 audioManager.playSoundEffect(AudioManager.FX_KEY_CLICK); 5401 return; 5402 case SoundEffectConstants.NAVIGATION_DOWN: 5403 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_DOWN); 5404 return; 5405 case SoundEffectConstants.NAVIGATION_LEFT: 5406 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_LEFT); 5407 return; 5408 case SoundEffectConstants.NAVIGATION_RIGHT: 5409 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_RIGHT); 5410 return; 5411 case SoundEffectConstants.NAVIGATION_UP: 5412 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_UP); 5413 return; 5414 default: 5415 throw new IllegalArgumentException("unknown effect id " + effectId + 5416 " not defined in " + SoundEffectConstants.class.getCanonicalName()); 5417 } 5418 } catch (IllegalStateException e) { 5419 // Exception thrown by getAudioManager() when mView is null 5420 Log.e(TAG, "FATAL EXCEPTION when attempting to play sound effect: " + e); 5421 e.printStackTrace(); 5422 } 5423 } 5424 5425 /** 5426 * {@inheritDoc} 5427 */ 5428 @Override 5429 public boolean performHapticFeedback(int effectId, boolean always) { 5430 try { 5431 return mWindowSession.performHapticFeedback(mWindow, effectId, always); 5432 } catch (RemoteException e) { 5433 return false; 5434 } 5435 } 5436 5437 /** 5438 * {@inheritDoc} 5439 */ 5440 @Override 5441 public View focusSearch(View focused, int direction) { 5442 checkThread(); 5443 if (!(mView instanceof ViewGroup)) { 5444 return null; 5445 } 5446 return FocusFinder.getInstance().findNextFocus((ViewGroup) mView, focused, direction); 5447 } 5448 5449 public void debug() { 5450 mView.debug(); 5451 } 5452 5453 public void dump(String prefix, FileDescriptor fd, PrintWriter writer, String[] args) { 5454 String innerPrefix = prefix + " "; 5455 writer.print(prefix); writer.println("ViewRoot:"); 5456 writer.print(innerPrefix); writer.print("mAdded="); writer.print(mAdded); 5457 writer.print(" mRemoved="); writer.println(mRemoved); 5458 writer.print(innerPrefix); writer.print("mConsumeBatchedInputScheduled="); 5459 writer.println(mConsumeBatchedInputScheduled); 5460 writer.print(innerPrefix); writer.print("mConsumeBatchedInputImmediatelyScheduled="); 5461 writer.println(mConsumeBatchedInputImmediatelyScheduled); 5462 writer.print(innerPrefix); writer.print("mPendingInputEventCount="); 5463 writer.println(mPendingInputEventCount); 5464 writer.print(innerPrefix); writer.print("mProcessInputEventsScheduled="); 5465 writer.println(mProcessInputEventsScheduled); 5466 writer.print(innerPrefix); writer.print("mTraversalScheduled="); 5467 writer.print(mTraversalScheduled); 5468 if (mTraversalScheduled) { 5469 writer.print(" (barrier="); writer.print(mTraversalBarrier); writer.println(")"); 5470 } else { 5471 writer.println(); 5472 } 5473 mFirstInputStage.dump(innerPrefix, writer); 5474 5475 mChoreographer.dump(prefix, writer); 5476 5477 writer.print(prefix); writer.println("View Hierarchy:"); 5478 dumpViewHierarchy(innerPrefix, writer, mView); 5479 } 5480 5481 private void dumpViewHierarchy(String prefix, PrintWriter writer, View view) { 5482 writer.print(prefix); 5483 if (view == null) { 5484 writer.println("null"); 5485 return; 5486 } 5487 writer.println(view.toString()); 5488 if (!(view instanceof ViewGroup)) { 5489 return; 5490 } 5491 ViewGroup grp = (ViewGroup)view; 5492 final int N = grp.getChildCount(); 5493 if (N <= 0) { 5494 return; 5495 } 5496 prefix = prefix + " "; 5497 for (int i=0; i<N; i++) { 5498 dumpViewHierarchy(prefix, writer, grp.getChildAt(i)); 5499 } 5500 } 5501 5502 public void dumpGfxInfo(int[] info) { 5503 info[0] = info[1] = 0; 5504 if (mView != null) { 5505 getGfxInfo(mView, info); 5506 } 5507 } 5508 5509 private static void getGfxInfo(View view, int[] info) { 5510 RenderNode renderNode = view.mRenderNode; 5511 info[0]++; 5512 if (renderNode != null) { 5513 info[1] += renderNode.getDebugSize(); 5514 } 5515 5516 if (view instanceof ViewGroup) { 5517 ViewGroup group = (ViewGroup) view; 5518 5519 int count = group.getChildCount(); 5520 for (int i = 0; i < count; i++) { 5521 getGfxInfo(group.getChildAt(i), info); 5522 } 5523 } 5524 } 5525 5526 /** 5527 * @param immediate True, do now if not in traversal. False, put on queue and do later. 5528 * @return True, request has been queued. False, request has been completed. 5529 */ 5530 boolean die(boolean immediate) { 5531 // Make sure we do execute immediately if we are in the middle of a traversal or the damage 5532 // done by dispatchDetachedFromWindow will cause havoc on return. 5533 if (immediate && !mIsInTraversal) { 5534 doDie(); 5535 return false; 5536 } 5537 5538 if (!mIsDrawing) { 5539 destroyHardwareRenderer(); 5540 } else { 5541 Log.e(TAG, "Attempting to destroy the window while drawing!\n" + 5542 " window=" + this + ", title=" + mWindowAttributes.getTitle()); 5543 } 5544 mHandler.sendEmptyMessage(MSG_DIE); 5545 return true; 5546 } 5547 5548 void doDie() { 5549 checkThread(); 5550 if (LOCAL_LOGV) Log.v(TAG, "DIE in " + this + " of " + mSurface); 5551 synchronized (this) { 5552 if (mRemoved) { 5553 return; 5554 } 5555 mRemoved = true; 5556 if (mAdded) { 5557 dispatchDetachedFromWindow(); 5558 } 5559 5560 if (mAdded && !mFirst) { 5561 destroyHardwareRenderer(); 5562 5563 if (mView != null) { 5564 int viewVisibility = mView.getVisibility(); 5565 boolean viewVisibilityChanged = mViewVisibility != viewVisibility; 5566 if (mWindowAttributesChanged || viewVisibilityChanged) { 5567 // If layout params have been changed, first give them 5568 // to the window manager to make sure it has the correct 5569 // animation info. 5570 try { 5571 if ((relayoutWindow(mWindowAttributes, viewVisibility, false) 5572 & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 5573 mWindowSession.finishDrawing(mWindow); 5574 } 5575 } catch (RemoteException e) { 5576 } 5577 } 5578 5579 mSurface.release(); 5580 } 5581 } 5582 5583 mAdded = false; 5584 } 5585 WindowManagerGlobal.getInstance().doRemoveView(this); 5586 } 5587 5588 public void requestUpdateConfiguration(Configuration config) { 5589 Message msg = mHandler.obtainMessage(MSG_UPDATE_CONFIGURATION, config); 5590 mHandler.sendMessage(msg); 5591 } 5592 5593 public void loadSystemProperties() { 5594 mHandler.post(new Runnable() { 5595 @Override 5596 public void run() { 5597 // Profiling 5598 mProfileRendering = SystemProperties.getBoolean(PROPERTY_PROFILE_RENDERING, false); 5599 profileRendering(mAttachInfo.mHasWindowFocus); 5600 5601 // Hardware rendering 5602 if (mAttachInfo.mHardwareRenderer != null) { 5603 if (mAttachInfo.mHardwareRenderer.loadSystemProperties()) { 5604 invalidate(); 5605 } 5606 } 5607 5608 // Layout debugging 5609 boolean layout = SystemProperties.getBoolean(View.DEBUG_LAYOUT_PROPERTY, false); 5610 if (layout != mAttachInfo.mDebugLayout) { 5611 mAttachInfo.mDebugLayout = layout; 5612 if (!mHandler.hasMessages(MSG_INVALIDATE_WORLD)) { 5613 mHandler.sendEmptyMessageDelayed(MSG_INVALIDATE_WORLD, 200); 5614 } 5615 } 5616 } 5617 }); 5618 } 5619 5620 private void destroyHardwareRenderer() { 5621 HardwareRenderer hardwareRenderer = mAttachInfo.mHardwareRenderer; 5622 5623 if (hardwareRenderer != null) { 5624 if (mView != null) { 5625 hardwareRenderer.destroyHardwareResources(mView); 5626 } 5627 hardwareRenderer.destroy(); 5628 hardwareRenderer.setRequested(false); 5629 5630 mAttachInfo.mHardwareRenderer = null; 5631 mAttachInfo.mHardwareAccelerated = false; 5632 } 5633 } 5634 5635 public void dispatchFinishInputConnection(InputConnection connection) { 5636 Message msg = mHandler.obtainMessage(MSG_FINISH_INPUT_CONNECTION, connection); 5637 mHandler.sendMessage(msg); 5638 } 5639 5640 public void dispatchResized(Rect frame, Rect overscanInsets, Rect contentInsets, 5641 Rect visibleInsets, Rect stableInsets, boolean reportDraw, Configuration newConfig) { 5642 if (DEBUG_LAYOUT) Log.v(TAG, "Resizing " + this + ": frame=" + frame.toShortString() 5643 + " contentInsets=" + contentInsets.toShortString() 5644 + " visibleInsets=" + visibleInsets.toShortString() 5645 + " reportDraw=" + reportDraw); 5646 Message msg = mHandler.obtainMessage(reportDraw ? MSG_RESIZED_REPORT : MSG_RESIZED); 5647 if (mTranslator != null) { 5648 mTranslator.translateRectInScreenToAppWindow(frame); 5649 mTranslator.translateRectInScreenToAppWindow(overscanInsets); 5650 mTranslator.translateRectInScreenToAppWindow(contentInsets); 5651 mTranslator.translateRectInScreenToAppWindow(visibleInsets); 5652 } 5653 SomeArgs args = SomeArgs.obtain(); 5654 final boolean sameProcessCall = (Binder.getCallingPid() == android.os.Process.myPid()); 5655 args.arg1 = sameProcessCall ? new Rect(frame) : frame; 5656 args.arg2 = sameProcessCall ? new Rect(contentInsets) : contentInsets; 5657 args.arg3 = sameProcessCall ? new Rect(visibleInsets) : visibleInsets; 5658 args.arg4 = sameProcessCall && newConfig != null ? new Configuration(newConfig) : newConfig; 5659 args.arg5 = sameProcessCall ? new Rect(overscanInsets) : overscanInsets; 5660 args.arg6 = sameProcessCall ? new Rect(stableInsets) : stableInsets; 5661 msg.obj = args; 5662 mHandler.sendMessage(msg); 5663 } 5664 5665 public void dispatchMoved(int newX, int newY) { 5666 if (DEBUG_LAYOUT) Log.v(TAG, "Window moved " + this + ": newX=" + newX + " newY=" + newY); 5667 if (mTranslator != null) { 5668 PointF point = new PointF(newX, newY); 5669 mTranslator.translatePointInScreenToAppWindow(point); 5670 newX = (int) (point.x + 0.5); 5671 newY = (int) (point.y + 0.5); 5672 } 5673 Message msg = mHandler.obtainMessage(MSG_WINDOW_MOVED, newX, newY); 5674 mHandler.sendMessage(msg); 5675 } 5676 5677 /** 5678 * Represents a pending input event that is waiting in a queue. 5679 * 5680 * Input events are processed in serial order by the timestamp specified by 5681 * {@link InputEvent#getEventTimeNano()}. In general, the input dispatcher delivers 5682 * one input event to the application at a time and waits for the application 5683 * to finish handling it before delivering the next one. 5684 * 5685 * However, because the application or IME can synthesize and inject multiple 5686 * key events at a time without going through the input dispatcher, we end up 5687 * needing a queue on the application's side. 5688 */ 5689 private static final class QueuedInputEvent { 5690 public static final int FLAG_DELIVER_POST_IME = 1 << 0; 5691 public static final int FLAG_DEFERRED = 1 << 1; 5692 public static final int FLAG_FINISHED = 1 << 2; 5693 public static final int FLAG_FINISHED_HANDLED = 1 << 3; 5694 public static final int FLAG_RESYNTHESIZED = 1 << 4; 5695 public static final int FLAG_UNHANDLED = 1 << 5; 5696 5697 public QueuedInputEvent mNext; 5698 5699 public InputEvent mEvent; 5700 public InputEventReceiver mReceiver; 5701 public int mFlags; 5702 5703 public boolean shouldSkipIme() { 5704 if ((mFlags & FLAG_DELIVER_POST_IME) != 0) { 5705 return true; 5706 } 5707 return mEvent instanceof MotionEvent 5708 && mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER); 5709 } 5710 5711 public boolean shouldSendToSynthesizer() { 5712 if ((mFlags & FLAG_UNHANDLED) != 0) { 5713 return true; 5714 } 5715 5716 return false; 5717 } 5718 5719 @Override 5720 public String toString() { 5721 StringBuilder sb = new StringBuilder("QueuedInputEvent{flags="); 5722 boolean hasPrevious = false; 5723 hasPrevious = flagToString("DELIVER_POST_IME", FLAG_DELIVER_POST_IME, hasPrevious, sb); 5724 hasPrevious = flagToString("DEFERRED", FLAG_DEFERRED, hasPrevious, sb); 5725 hasPrevious = flagToString("FINISHED", FLAG_FINISHED, hasPrevious, sb); 5726 hasPrevious = flagToString("FINISHED_HANDLED", FLAG_FINISHED_HANDLED, hasPrevious, sb); 5727 hasPrevious = flagToString("RESYNTHESIZED", FLAG_RESYNTHESIZED, hasPrevious, sb); 5728 hasPrevious = flagToString("UNHANDLED", FLAG_UNHANDLED, hasPrevious, sb); 5729 if (!hasPrevious) { 5730 sb.append("0"); 5731 } 5732 sb.append(", hasNextQueuedEvent=" + (mEvent != null ? "true" : "false")); 5733 sb.append(", hasInputEventReceiver=" + (mReceiver != null ? "true" : "false")); 5734 sb.append(", mEvent=" + mEvent + "}"); 5735 return sb.toString(); 5736 } 5737 5738 private boolean flagToString(String name, int flag, 5739 boolean hasPrevious, StringBuilder sb) { 5740 if ((mFlags & flag) != 0) { 5741 if (hasPrevious) { 5742 sb.append("|"); 5743 } 5744 sb.append(name); 5745 return true; 5746 } 5747 return hasPrevious; 5748 } 5749 } 5750 5751 private QueuedInputEvent obtainQueuedInputEvent(InputEvent event, 5752 InputEventReceiver receiver, int flags) { 5753 QueuedInputEvent q = mQueuedInputEventPool; 5754 if (q != null) { 5755 mQueuedInputEventPoolSize -= 1; 5756 mQueuedInputEventPool = q.mNext; 5757 q.mNext = null; 5758 } else { 5759 q = new QueuedInputEvent(); 5760 } 5761 5762 q.mEvent = event; 5763 q.mReceiver = receiver; 5764 q.mFlags = flags; 5765 return q; 5766 } 5767 5768 private void recycleQueuedInputEvent(QueuedInputEvent q) { 5769 q.mEvent = null; 5770 q.mReceiver = null; 5771 5772 if (mQueuedInputEventPoolSize < MAX_QUEUED_INPUT_EVENT_POOL_SIZE) { 5773 mQueuedInputEventPoolSize += 1; 5774 q.mNext = mQueuedInputEventPool; 5775 mQueuedInputEventPool = q; 5776 } 5777 } 5778 5779 void enqueueInputEvent(InputEvent event) { 5780 enqueueInputEvent(event, null, 0, false); 5781 } 5782 5783 void enqueueInputEvent(InputEvent event, 5784 InputEventReceiver receiver, int flags, boolean processImmediately) { 5785 adjustInputEventForCompatibility(event); 5786 QueuedInputEvent q = obtainQueuedInputEvent(event, receiver, flags); 5787 5788 // Always enqueue the input event in order, regardless of its time stamp. 5789 // We do this because the application or the IME may inject key events 5790 // in response to touch events and we want to ensure that the injected keys 5791 // are processed in the order they were received and we cannot trust that 5792 // the time stamp of injected events are monotonic. 5793 QueuedInputEvent last = mPendingInputEventTail; 5794 if (last == null) { 5795 mPendingInputEventHead = q; 5796 mPendingInputEventTail = q; 5797 } else { 5798 last.mNext = q; 5799 mPendingInputEventTail = q; 5800 } 5801 mPendingInputEventCount += 1; 5802 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 5803 mPendingInputEventCount); 5804 5805 if (processImmediately) { 5806 doProcessInputEvents(); 5807 } else { 5808 scheduleProcessInputEvents(); 5809 } 5810 } 5811 5812 private void scheduleProcessInputEvents() { 5813 if (!mProcessInputEventsScheduled) { 5814 mProcessInputEventsScheduled = true; 5815 Message msg = mHandler.obtainMessage(MSG_PROCESS_INPUT_EVENTS); 5816 msg.setAsynchronous(true); 5817 mHandler.sendMessage(msg); 5818 } 5819 } 5820 5821 void doProcessInputEvents() { 5822 // Deliver all pending input events in the queue. 5823 while (mPendingInputEventHead != null) { 5824 QueuedInputEvent q = mPendingInputEventHead; 5825 mPendingInputEventHead = q.mNext; 5826 if (mPendingInputEventHead == null) { 5827 mPendingInputEventTail = null; 5828 } 5829 q.mNext = null; 5830 5831 mPendingInputEventCount -= 1; 5832 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 5833 mPendingInputEventCount); 5834 5835 long eventTime = q.mEvent.getEventTimeNano(); 5836 long oldestEventTime = eventTime; 5837 if (q.mEvent instanceof MotionEvent) { 5838 MotionEvent me = (MotionEvent)q.mEvent; 5839 if (me.getHistorySize() > 0) { 5840 oldestEventTime = me.getHistoricalEventTimeNano(0); 5841 } 5842 } 5843 mChoreographer.mFrameInfo.updateInputEventTime(eventTime, oldestEventTime); 5844 5845 deliverInputEvent(q); 5846 } 5847 5848 // We are done processing all input events that we can process right now 5849 // so we can clear the pending flag immediately. 5850 if (mProcessInputEventsScheduled) { 5851 mProcessInputEventsScheduled = false; 5852 mHandler.removeMessages(MSG_PROCESS_INPUT_EVENTS); 5853 } 5854 } 5855 5856 private void deliverInputEvent(QueuedInputEvent q) { 5857 Trace.asyncTraceBegin(Trace.TRACE_TAG_VIEW, "deliverInputEvent", 5858 q.mEvent.getSequenceNumber()); 5859 if (mInputEventConsistencyVerifier != null) { 5860 mInputEventConsistencyVerifier.onInputEvent(q.mEvent, 0); 5861 } 5862 5863 InputStage stage; 5864 if (q.shouldSendToSynthesizer()) { 5865 stage = mSyntheticInputStage; 5866 } else { 5867 stage = q.shouldSkipIme() ? mFirstPostImeInputStage : mFirstInputStage; 5868 } 5869 5870 if (stage != null) { 5871 stage.deliver(q); 5872 } else { 5873 finishInputEvent(q); 5874 } 5875 } 5876 5877 private void finishInputEvent(QueuedInputEvent q) { 5878 Trace.asyncTraceEnd(Trace.TRACE_TAG_VIEW, "deliverInputEvent", 5879 q.mEvent.getSequenceNumber()); 5880 5881 if (q.mReceiver != null) { 5882 boolean handled = (q.mFlags & QueuedInputEvent.FLAG_FINISHED_HANDLED) != 0; 5883 q.mReceiver.finishInputEvent(q.mEvent, handled); 5884 } else { 5885 q.mEvent.recycleIfNeededAfterDispatch(); 5886 } 5887 5888 recycleQueuedInputEvent(q); 5889 } 5890 5891 private void adjustInputEventForCompatibility(InputEvent e) { 5892 if (mTargetSdkVersion < Build.VERSION_CODES.MNC && e instanceof MotionEvent) { 5893 MotionEvent motion = (MotionEvent) e; 5894 final int mask = 5895 MotionEvent.BUTTON_STYLUS_PRIMARY | MotionEvent.BUTTON_STYLUS_SECONDARY; 5896 final int buttonState = motion.getButtonState(); 5897 final int compatButtonState = (buttonState & mask) >> 4; 5898 if (compatButtonState != 0) { 5899 motion.setButtonState(buttonState | compatButtonState); 5900 } 5901 } 5902 } 5903 5904 static boolean isTerminalInputEvent(InputEvent event) { 5905 if (event instanceof KeyEvent) { 5906 final KeyEvent keyEvent = (KeyEvent)event; 5907 return keyEvent.getAction() == KeyEvent.ACTION_UP; 5908 } else { 5909 final MotionEvent motionEvent = (MotionEvent)event; 5910 final int action = motionEvent.getAction(); 5911 return action == MotionEvent.ACTION_UP 5912 || action == MotionEvent.ACTION_CANCEL 5913 || action == MotionEvent.ACTION_HOVER_EXIT; 5914 } 5915 } 5916 5917 void scheduleConsumeBatchedInput() { 5918 if (!mConsumeBatchedInputScheduled) { 5919 mConsumeBatchedInputScheduled = true; 5920 mChoreographer.postCallback(Choreographer.CALLBACK_INPUT, 5921 mConsumedBatchedInputRunnable, null); 5922 } 5923 } 5924 5925 void unscheduleConsumeBatchedInput() { 5926 if (mConsumeBatchedInputScheduled) { 5927 mConsumeBatchedInputScheduled = false; 5928 mChoreographer.removeCallbacks(Choreographer.CALLBACK_INPUT, 5929 mConsumedBatchedInputRunnable, null); 5930 } 5931 } 5932 5933 void scheduleConsumeBatchedInputImmediately() { 5934 if (!mConsumeBatchedInputImmediatelyScheduled) { 5935 unscheduleConsumeBatchedInput(); 5936 mConsumeBatchedInputImmediatelyScheduled = true; 5937 mHandler.post(mConsumeBatchedInputImmediatelyRunnable); 5938 } 5939 } 5940 5941 void doConsumeBatchedInput(long frameTimeNanos) { 5942 if (mConsumeBatchedInputScheduled) { 5943 mConsumeBatchedInputScheduled = false; 5944 if (mInputEventReceiver != null) { 5945 if (mInputEventReceiver.consumeBatchedInputEvents(frameTimeNanos) 5946 && frameTimeNanos != -1) { 5947 // If we consumed a batch here, we want to go ahead and schedule the 5948 // consumption of batched input events on the next frame. Otherwise, we would 5949 // wait until we have more input events pending and might get starved by other 5950 // things occurring in the process. If the frame time is -1, however, then 5951 // we're in a non-batching mode, so there's no need to schedule this. 5952 scheduleConsumeBatchedInput(); 5953 } 5954 } 5955 doProcessInputEvents(); 5956 } 5957 } 5958 5959 final class TraversalRunnable implements Runnable { 5960 @Override 5961 public void run() { 5962 doTraversal(); 5963 } 5964 } 5965 final TraversalRunnable mTraversalRunnable = new TraversalRunnable(); 5966 5967 final class WindowInputEventReceiver extends InputEventReceiver { 5968 public WindowInputEventReceiver(InputChannel inputChannel, Looper looper) { 5969 super(inputChannel, looper); 5970 } 5971 5972 @Override 5973 public void onInputEvent(InputEvent event) { 5974 enqueueInputEvent(event, this, 0, true); 5975 } 5976 5977 @Override 5978 public void onBatchedInputEventPending() { 5979 if (mUnbufferedInputDispatch) { 5980 super.onBatchedInputEventPending(); 5981 } else { 5982 scheduleConsumeBatchedInput(); 5983 } 5984 } 5985 5986 @Override 5987 public void dispose() { 5988 unscheduleConsumeBatchedInput(); 5989 super.dispose(); 5990 } 5991 } 5992 WindowInputEventReceiver mInputEventReceiver; 5993 5994 final class ConsumeBatchedInputRunnable implements Runnable { 5995 @Override 5996 public void run() { 5997 doConsumeBatchedInput(mChoreographer.getFrameTimeNanos()); 5998 } 5999 } 6000 final ConsumeBatchedInputRunnable mConsumedBatchedInputRunnable = 6001 new ConsumeBatchedInputRunnable(); 6002 boolean mConsumeBatchedInputScheduled; 6003 6004 final class ConsumeBatchedInputImmediatelyRunnable implements Runnable { 6005 @Override 6006 public void run() { 6007 doConsumeBatchedInput(-1); 6008 } 6009 } 6010 final ConsumeBatchedInputImmediatelyRunnable mConsumeBatchedInputImmediatelyRunnable = 6011 new ConsumeBatchedInputImmediatelyRunnable(); 6012 boolean mConsumeBatchedInputImmediatelyScheduled; 6013 6014 final class InvalidateOnAnimationRunnable implements Runnable { 6015 private boolean mPosted; 6016 private final ArrayList<View> mViews = new ArrayList<View>(); 6017 private final ArrayList<AttachInfo.InvalidateInfo> mViewRects = 6018 new ArrayList<AttachInfo.InvalidateInfo>(); 6019 private View[] mTempViews; 6020 private AttachInfo.InvalidateInfo[] mTempViewRects; 6021 6022 public void addView(View view) { 6023 synchronized (this) { 6024 mViews.add(view); 6025 postIfNeededLocked(); 6026 } 6027 } 6028 6029 public void addViewRect(AttachInfo.InvalidateInfo info) { 6030 synchronized (this) { 6031 mViewRects.add(info); 6032 postIfNeededLocked(); 6033 } 6034 } 6035 6036 public void removeView(View view) { 6037 synchronized (this) { 6038 mViews.remove(view); 6039 6040 for (int i = mViewRects.size(); i-- > 0; ) { 6041 AttachInfo.InvalidateInfo info = mViewRects.get(i); 6042 if (info.target == view) { 6043 mViewRects.remove(i); 6044 info.recycle(); 6045 } 6046 } 6047 6048 if (mPosted && mViews.isEmpty() && mViewRects.isEmpty()) { 6049 mChoreographer.removeCallbacks(Choreographer.CALLBACK_ANIMATION, this, null); 6050 mPosted = false; 6051 } 6052 } 6053 } 6054 6055 @Override 6056 public void run() { 6057 final int viewCount; 6058 final int viewRectCount; 6059 synchronized (this) { 6060 mPosted = false; 6061 6062 viewCount = mViews.size(); 6063 if (viewCount != 0) { 6064 mTempViews = mViews.toArray(mTempViews != null 6065 ? mTempViews : new View[viewCount]); 6066 mViews.clear(); 6067 } 6068 6069 viewRectCount = mViewRects.size(); 6070 if (viewRectCount != 0) { 6071 mTempViewRects = mViewRects.toArray(mTempViewRects != null 6072 ? mTempViewRects : new AttachInfo.InvalidateInfo[viewRectCount]); 6073 mViewRects.clear(); 6074 } 6075 } 6076 6077 for (int i = 0; i < viewCount; i++) { 6078 mTempViews[i].invalidate(); 6079 mTempViews[i] = null; 6080 } 6081 6082 for (int i = 0; i < viewRectCount; i++) { 6083 final View.AttachInfo.InvalidateInfo info = mTempViewRects[i]; 6084 info.target.invalidate(info.left, info.top, info.right, info.bottom); 6085 info.recycle(); 6086 } 6087 } 6088 6089 private void postIfNeededLocked() { 6090 if (!mPosted) { 6091 mChoreographer.postCallback(Choreographer.CALLBACK_ANIMATION, this, null); 6092 mPosted = true; 6093 } 6094 } 6095 } 6096 final InvalidateOnAnimationRunnable mInvalidateOnAnimationRunnable = 6097 new InvalidateOnAnimationRunnable(); 6098 6099 public void dispatchInvalidateDelayed(View view, long delayMilliseconds) { 6100 Message msg = mHandler.obtainMessage(MSG_INVALIDATE, view); 6101 mHandler.sendMessageDelayed(msg, delayMilliseconds); 6102 } 6103 6104 public void dispatchInvalidateRectDelayed(AttachInfo.InvalidateInfo info, 6105 long delayMilliseconds) { 6106 final Message msg = mHandler.obtainMessage(MSG_INVALIDATE_RECT, info); 6107 mHandler.sendMessageDelayed(msg, delayMilliseconds); 6108 } 6109 6110 public void dispatchInvalidateOnAnimation(View view) { 6111 mInvalidateOnAnimationRunnable.addView(view); 6112 } 6113 6114 public void dispatchInvalidateRectOnAnimation(AttachInfo.InvalidateInfo info) { 6115 mInvalidateOnAnimationRunnable.addViewRect(info); 6116 } 6117 6118 public void cancelInvalidate(View view) { 6119 mHandler.removeMessages(MSG_INVALIDATE, view); 6120 // fixme: might leak the AttachInfo.InvalidateInfo objects instead of returning 6121 // them to the pool 6122 mHandler.removeMessages(MSG_INVALIDATE_RECT, view); 6123 mInvalidateOnAnimationRunnable.removeView(view); 6124 } 6125 6126 public void dispatchInputEvent(InputEvent event) { 6127 dispatchInputEvent(event, null); 6128 } 6129 6130 public void dispatchInputEvent(InputEvent event, InputEventReceiver receiver) { 6131 SomeArgs args = SomeArgs.obtain(); 6132 args.arg1 = event; 6133 args.arg2 = receiver; 6134 Message msg = mHandler.obtainMessage(MSG_DISPATCH_INPUT_EVENT, args); 6135 msg.setAsynchronous(true); 6136 mHandler.sendMessage(msg); 6137 } 6138 6139 public void synthesizeInputEvent(InputEvent event) { 6140 Message msg = mHandler.obtainMessage(MSG_SYNTHESIZE_INPUT_EVENT, event); 6141 msg.setAsynchronous(true); 6142 mHandler.sendMessage(msg); 6143 } 6144 6145 public void dispatchKeyFromIme(KeyEvent event) { 6146 Message msg = mHandler.obtainMessage(MSG_DISPATCH_KEY_FROM_IME, event); 6147 msg.setAsynchronous(true); 6148 mHandler.sendMessage(msg); 6149 } 6150 6151 /** 6152 * Reinject unhandled {@link InputEvent}s in order to synthesize fallbacks events. 6153 * 6154 * Note that it is the responsibility of the caller of this API to recycle the InputEvent it 6155 * passes in. 6156 */ 6157 public void dispatchUnhandledInputEvent(InputEvent event) { 6158 if (event instanceof MotionEvent) { 6159 event = MotionEvent.obtain((MotionEvent) event); 6160 } 6161 synthesizeInputEvent(event); 6162 } 6163 6164 public void dispatchAppVisibility(boolean visible) { 6165 Message msg = mHandler.obtainMessage(MSG_DISPATCH_APP_VISIBILITY); 6166 msg.arg1 = visible ? 1 : 0; 6167 mHandler.sendMessage(msg); 6168 } 6169 6170 public void dispatchGetNewSurface() { 6171 Message msg = mHandler.obtainMessage(MSG_DISPATCH_GET_NEW_SURFACE); 6172 mHandler.sendMessage(msg); 6173 } 6174 6175 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 6176 Message msg = Message.obtain(); 6177 msg.what = MSG_WINDOW_FOCUS_CHANGED; 6178 msg.arg1 = hasFocus ? 1 : 0; 6179 msg.arg2 = inTouchMode ? 1 : 0; 6180 mHandler.sendMessage(msg); 6181 } 6182 6183 public void dispatchWindowShown() { 6184 mHandler.sendEmptyMessage(MSG_DISPATCH_WINDOW_SHOWN); 6185 } 6186 6187 public void dispatchCloseSystemDialogs(String reason) { 6188 Message msg = Message.obtain(); 6189 msg.what = MSG_CLOSE_SYSTEM_DIALOGS; 6190 msg.obj = reason; 6191 mHandler.sendMessage(msg); 6192 } 6193 6194 public void dispatchDragEvent(DragEvent event) { 6195 final int what; 6196 if (event.getAction() == DragEvent.ACTION_DRAG_LOCATION) { 6197 what = MSG_DISPATCH_DRAG_LOCATION_EVENT; 6198 mHandler.removeMessages(what); 6199 } else { 6200 what = MSG_DISPATCH_DRAG_EVENT; 6201 } 6202 Message msg = mHandler.obtainMessage(what, event); 6203 mHandler.sendMessage(msg); 6204 } 6205 6206 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 6207 int localValue, int localChanges) { 6208 SystemUiVisibilityInfo args = new SystemUiVisibilityInfo(); 6209 args.seq = seq; 6210 args.globalVisibility = globalVisibility; 6211 args.localValue = localValue; 6212 args.localChanges = localChanges; 6213 mHandler.sendMessage(mHandler.obtainMessage(MSG_DISPATCH_SYSTEM_UI_VISIBILITY, args)); 6214 } 6215 6216 public void dispatchWindowAnimationStarted(int remainingFrameCount) { 6217 mHandler.obtainMessage(MSG_DISPATCH_WINDOW_ANIMATION_STARTED, 6218 remainingFrameCount, 0 /* unused */).sendToTarget(); 6219 } 6220 6221 public void dispatchWindowAnimationStopped() { 6222 mHandler.sendEmptyMessage(MSG_DISPATCH_WINDOW_ANIMATION_STOPPED); 6223 } 6224 6225 public void dispatchCheckFocus() { 6226 if (!mHandler.hasMessages(MSG_CHECK_FOCUS)) { 6227 // This will result in a call to checkFocus() below. 6228 mHandler.sendEmptyMessage(MSG_CHECK_FOCUS); 6229 } 6230 } 6231 6232 /** 6233 * Post a callback to send a 6234 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 6235 * This event is send at most once every 6236 * {@link ViewConfiguration#getSendRecurringAccessibilityEventsInterval()}. 6237 */ 6238 private void postSendWindowContentChangedCallback(View source, int changeType) { 6239 if (mSendWindowContentChangedAccessibilityEvent == null) { 6240 mSendWindowContentChangedAccessibilityEvent = 6241 new SendWindowContentChangedAccessibilityEvent(); 6242 } 6243 mSendWindowContentChangedAccessibilityEvent.runOrPost(source, changeType); 6244 } 6245 6246 /** 6247 * Remove a posted callback to send a 6248 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 6249 */ 6250 private void removeSendWindowContentChangedCallback() { 6251 if (mSendWindowContentChangedAccessibilityEvent != null) { 6252 mHandler.removeCallbacks(mSendWindowContentChangedAccessibilityEvent); 6253 } 6254 } 6255 6256 @Override 6257 public boolean showContextMenuForChild(View originalView) { 6258 return false; 6259 } 6260 6261 @Override 6262 public ActionMode startActionModeForChild(View originalView, ActionMode.Callback callback) { 6263 return null; 6264 } 6265 6266 @Override 6267 public ActionMode startActionModeForChild( 6268 View originalView, ActionMode.Callback callback, int type) { 6269 return null; 6270 } 6271 6272 @Override 6273 public void createContextMenu(ContextMenu menu) { 6274 } 6275 6276 @Override 6277 public void childDrawableStateChanged(View child) { 6278 } 6279 6280 @Override 6281 public boolean requestSendAccessibilityEvent(View child, AccessibilityEvent event) { 6282 if (mView == null || mStopped || mPausedForTransition) { 6283 return false; 6284 } 6285 // Intercept accessibility focus events fired by virtual nodes to keep 6286 // track of accessibility focus position in such nodes. 6287 final int eventType = event.getEventType(); 6288 switch (eventType) { 6289 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUSED: { 6290 final long sourceNodeId = event.getSourceNodeId(); 6291 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 6292 sourceNodeId); 6293 View source = mView.findViewByAccessibilityId(accessibilityViewId); 6294 if (source != null) { 6295 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 6296 if (provider != null) { 6297 final int virtualNodeId = AccessibilityNodeInfo.getVirtualDescendantId( 6298 sourceNodeId); 6299 final AccessibilityNodeInfo node; 6300 if (virtualNodeId == AccessibilityNodeInfo.UNDEFINED_ITEM_ID) { 6301 node = provider.createAccessibilityNodeInfo( 6302 AccessibilityNodeProvider.HOST_VIEW_ID); 6303 } else { 6304 node = provider.createAccessibilityNodeInfo(virtualNodeId); 6305 } 6306 setAccessibilityFocus(source, node); 6307 } 6308 } 6309 } break; 6310 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUS_CLEARED: { 6311 final long sourceNodeId = event.getSourceNodeId(); 6312 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 6313 sourceNodeId); 6314 View source = mView.findViewByAccessibilityId(accessibilityViewId); 6315 if (source != null) { 6316 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 6317 if (provider != null) { 6318 setAccessibilityFocus(null, null); 6319 } 6320 } 6321 } break; 6322 6323 6324 case AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED: { 6325 handleWindowContentChangedEvent(event); 6326 } break; 6327 } 6328 mAccessibilityManager.sendAccessibilityEvent(event); 6329 return true; 6330 } 6331 6332 /** 6333 * Updates the focused virtual view, when necessary, in response to a 6334 * content changed event. 6335 * <p> 6336 * This is necessary to get updated bounds after a position change. 6337 * 6338 * @param event an accessibility event of type 6339 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} 6340 */ 6341 private void handleWindowContentChangedEvent(AccessibilityEvent event) { 6342 // No virtual view focused, nothing to do here. 6343 if (mAccessibilityFocusedHost == null || mAccessibilityFocusedVirtualView == null) { 6344 return; 6345 } 6346 6347 // If we have a node but no provider, abort. 6348 final AccessibilityNodeProvider provider = 6349 mAccessibilityFocusedHost.getAccessibilityNodeProvider(); 6350 if (provider == null) { 6351 // TODO: Should we clear the focused virtual view? 6352 return; 6353 } 6354 6355 // We only care about change types that may affect the bounds of the 6356 // focused virtual view. 6357 final int changes = event.getContentChangeTypes(); 6358 if ((changes & AccessibilityEvent.CONTENT_CHANGE_TYPE_SUBTREE) == 0 6359 && changes != AccessibilityEvent.CONTENT_CHANGE_TYPE_UNDEFINED) { 6360 return; 6361 } 6362 6363 final long eventSourceNodeId = event.getSourceNodeId(); 6364 final int changedViewId = AccessibilityNodeInfo.getAccessibilityViewId(eventSourceNodeId); 6365 6366 // Search up the tree for subtree containment. 6367 boolean hostInSubtree = false; 6368 View root = mAccessibilityFocusedHost; 6369 while (root != null && !hostInSubtree) { 6370 if (changedViewId == root.getAccessibilityViewId()) { 6371 hostInSubtree = true; 6372 } else { 6373 final ViewParent parent = root.getParent(); 6374 if (parent instanceof View) { 6375 root = (View) parent; 6376 } else { 6377 root = null; 6378 } 6379 } 6380 } 6381 6382 // We care only about changes in subtrees containing the host view. 6383 if (!hostInSubtree) { 6384 return; 6385 } 6386 6387 final long focusedSourceNodeId = mAccessibilityFocusedVirtualView.getSourceNodeId(); 6388 int focusedChildId = AccessibilityNodeInfo.getVirtualDescendantId(focusedSourceNodeId); 6389 if (focusedChildId == AccessibilityNodeInfo.UNDEFINED_ITEM_ID) { 6390 // TODO: Should we clear the focused virtual view? 6391 focusedChildId = AccessibilityNodeProvider.HOST_VIEW_ID; 6392 } 6393 6394 // Refresh the node for the focused virtual view. 6395 mAccessibilityFocusedVirtualView = provider.createAccessibilityNodeInfo(focusedChildId); 6396 } 6397 6398 @Override 6399 public void notifySubtreeAccessibilityStateChanged(View child, View source, int changeType) { 6400 postSendWindowContentChangedCallback(source, changeType); 6401 } 6402 6403 @Override 6404 public boolean canResolveLayoutDirection() { 6405 return true; 6406 } 6407 6408 @Override 6409 public boolean isLayoutDirectionResolved() { 6410 return true; 6411 } 6412 6413 @Override 6414 public int getLayoutDirection() { 6415 return View.LAYOUT_DIRECTION_RESOLVED_DEFAULT; 6416 } 6417 6418 @Override 6419 public boolean canResolveTextDirection() { 6420 return true; 6421 } 6422 6423 @Override 6424 public boolean isTextDirectionResolved() { 6425 return true; 6426 } 6427 6428 @Override 6429 public int getTextDirection() { 6430 return View.TEXT_DIRECTION_RESOLVED_DEFAULT; 6431 } 6432 6433 @Override 6434 public boolean canResolveTextAlignment() { 6435 return true; 6436 } 6437 6438 @Override 6439 public boolean isTextAlignmentResolved() { 6440 return true; 6441 } 6442 6443 @Override 6444 public int getTextAlignment() { 6445 return View.TEXT_ALIGNMENT_RESOLVED_DEFAULT; 6446 } 6447 6448 private View getCommonPredecessor(View first, View second) { 6449 if (mTempHashSet == null) { 6450 mTempHashSet = new HashSet<View>(); 6451 } 6452 HashSet<View> seen = mTempHashSet; 6453 seen.clear(); 6454 View firstCurrent = first; 6455 while (firstCurrent != null) { 6456 seen.add(firstCurrent); 6457 ViewParent firstCurrentParent = firstCurrent.mParent; 6458 if (firstCurrentParent instanceof View) { 6459 firstCurrent = (View) firstCurrentParent; 6460 } else { 6461 firstCurrent = null; 6462 } 6463 } 6464 View secondCurrent = second; 6465 while (secondCurrent != null) { 6466 if (seen.contains(secondCurrent)) { 6467 seen.clear(); 6468 return secondCurrent; 6469 } 6470 ViewParent secondCurrentParent = secondCurrent.mParent; 6471 if (secondCurrentParent instanceof View) { 6472 secondCurrent = (View) secondCurrentParent; 6473 } else { 6474 secondCurrent = null; 6475 } 6476 } 6477 seen.clear(); 6478 return null; 6479 } 6480 6481 void checkThread() { 6482 if (mThread != Thread.currentThread()) { 6483 throw new CalledFromWrongThreadException( 6484 "Only the original thread that created a view hierarchy can touch its views."); 6485 } 6486 } 6487 6488 @Override 6489 public void requestDisallowInterceptTouchEvent(boolean disallowIntercept) { 6490 // ViewAncestor never intercepts touch event, so this can be a no-op 6491 } 6492 6493 @Override 6494 public boolean requestChildRectangleOnScreen(View child, Rect rectangle, boolean immediate) { 6495 final boolean scrolled = scrollToRectOrFocus(rectangle, immediate); 6496 if (rectangle != null) { 6497 mTempRect.set(rectangle); 6498 mTempRect.offset(0, -mCurScrollY); 6499 mTempRect.offset(mAttachInfo.mWindowLeft, mAttachInfo.mWindowTop); 6500 try { 6501 mWindowSession.onRectangleOnScreenRequested(mWindow, mTempRect); 6502 } catch (RemoteException re) { 6503 /* ignore */ 6504 } 6505 } 6506 return scrolled; 6507 } 6508 6509 @Override 6510 public void childHasTransientStateChanged(View child, boolean hasTransientState) { 6511 // Do nothing. 6512 } 6513 6514 @Override 6515 public boolean onStartNestedScroll(View child, View target, int nestedScrollAxes) { 6516 return false; 6517 } 6518 6519 @Override 6520 public void onStopNestedScroll(View target) { 6521 } 6522 6523 @Override 6524 public void onNestedScrollAccepted(View child, View target, int nestedScrollAxes) { 6525 } 6526 6527 @Override 6528 public void onNestedScroll(View target, int dxConsumed, int dyConsumed, 6529 int dxUnconsumed, int dyUnconsumed) { 6530 } 6531 6532 @Override 6533 public void onNestedPreScroll(View target, int dx, int dy, int[] consumed) { 6534 } 6535 6536 @Override 6537 public boolean onNestedFling(View target, float velocityX, float velocityY, boolean consumed) { 6538 return false; 6539 } 6540 6541 @Override 6542 public boolean onNestedPreFling(View target, float velocityX, float velocityY) { 6543 return false; 6544 } 6545 6546 @Override 6547 public boolean onNestedPrePerformAccessibilityAction(View target, int action, Bundle args) { 6548 return false; 6549 } 6550 6551 void changeCanvasOpacity(boolean opaque) { 6552 Log.d(TAG, "changeCanvasOpacity: opaque=" + opaque); 6553 if (mAttachInfo.mHardwareRenderer != null) { 6554 mAttachInfo.mHardwareRenderer.setOpaque(opaque); 6555 } 6556 } 6557 6558 class TakenSurfaceHolder extends BaseSurfaceHolder { 6559 @Override 6560 public boolean onAllowLockCanvas() { 6561 return mDrawingAllowed; 6562 } 6563 6564 @Override 6565 public void onRelayoutContainer() { 6566 // Not currently interesting -- from changing between fixed and layout size. 6567 } 6568 6569 @Override 6570 public void setFormat(int format) { 6571 ((RootViewSurfaceTaker)mView).setSurfaceFormat(format); 6572 } 6573 6574 @Override 6575 public void setType(int type) { 6576 ((RootViewSurfaceTaker)mView).setSurfaceType(type); 6577 } 6578 6579 @Override 6580 public void onUpdateSurface() { 6581 // We take care of format and type changes on our own. 6582 throw new IllegalStateException("Shouldn't be here"); 6583 } 6584 6585 @Override 6586 public boolean isCreating() { 6587 return mIsCreating; 6588 } 6589 6590 @Override 6591 public void setFixedSize(int width, int height) { 6592 throw new UnsupportedOperationException( 6593 "Currently only support sizing from layout"); 6594 } 6595 6596 @Override 6597 public void setKeepScreenOn(boolean screenOn) { 6598 ((RootViewSurfaceTaker)mView).setSurfaceKeepScreenOn(screenOn); 6599 } 6600 } 6601 6602 static class W extends IWindow.Stub { 6603 private final WeakReference<ViewRootImpl> mViewAncestor; 6604 private final IWindowSession mWindowSession; 6605 6606 W(ViewRootImpl viewAncestor) { 6607 mViewAncestor = new WeakReference<ViewRootImpl>(viewAncestor); 6608 mWindowSession = viewAncestor.mWindowSession; 6609 } 6610 6611 @Override 6612 public void resized(Rect frame, Rect overscanInsets, Rect contentInsets, 6613 Rect visibleInsets, Rect stableInsets, boolean reportDraw, 6614 Configuration newConfig) { 6615 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6616 if (viewAncestor != null) { 6617 viewAncestor.dispatchResized(frame, overscanInsets, contentInsets, 6618 visibleInsets, stableInsets, reportDraw, newConfig); 6619 } 6620 } 6621 6622 @Override 6623 public void moved(int newX, int newY) { 6624 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6625 if (viewAncestor != null) { 6626 viewAncestor.dispatchMoved(newX, newY); 6627 } 6628 } 6629 6630 @Override 6631 public void dispatchAppVisibility(boolean visible) { 6632 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6633 if (viewAncestor != null) { 6634 viewAncestor.dispatchAppVisibility(visible); 6635 } 6636 } 6637 6638 @Override 6639 public void dispatchGetNewSurface() { 6640 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6641 if (viewAncestor != null) { 6642 viewAncestor.dispatchGetNewSurface(); 6643 } 6644 } 6645 6646 @Override 6647 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 6648 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6649 if (viewAncestor != null) { 6650 viewAncestor.windowFocusChanged(hasFocus, inTouchMode); 6651 } 6652 } 6653 6654 private static int checkCallingPermission(String permission) { 6655 try { 6656 return ActivityManagerNative.getDefault().checkPermission( 6657 permission, Binder.getCallingPid(), Binder.getCallingUid()); 6658 } catch (RemoteException e) { 6659 return PackageManager.PERMISSION_DENIED; 6660 } 6661 } 6662 6663 @Override 6664 public void executeCommand(String command, String parameters, ParcelFileDescriptor out) { 6665 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6666 if (viewAncestor != null) { 6667 final View view = viewAncestor.mView; 6668 if (view != null) { 6669 if (checkCallingPermission(Manifest.permission.DUMP) != 6670 PackageManager.PERMISSION_GRANTED) { 6671 throw new SecurityException("Insufficient permissions to invoke" 6672 + " executeCommand() from pid=" + Binder.getCallingPid() 6673 + ", uid=" + Binder.getCallingUid()); 6674 } 6675 6676 OutputStream clientStream = null; 6677 try { 6678 clientStream = new ParcelFileDescriptor.AutoCloseOutputStream(out); 6679 ViewDebug.dispatchCommand(view, command, parameters, clientStream); 6680 } catch (IOException e) { 6681 e.printStackTrace(); 6682 } finally { 6683 if (clientStream != null) { 6684 try { 6685 clientStream.close(); 6686 } catch (IOException e) { 6687 e.printStackTrace(); 6688 } 6689 } 6690 } 6691 } 6692 } 6693 } 6694 6695 @Override 6696 public void closeSystemDialogs(String reason) { 6697 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6698 if (viewAncestor != null) { 6699 viewAncestor.dispatchCloseSystemDialogs(reason); 6700 } 6701 } 6702 6703 @Override 6704 public void dispatchWallpaperOffsets(float x, float y, float xStep, float yStep, 6705 boolean sync) { 6706 if (sync) { 6707 try { 6708 mWindowSession.wallpaperOffsetsComplete(asBinder()); 6709 } catch (RemoteException e) { 6710 } 6711 } 6712 } 6713 6714 @Override 6715 public void dispatchWallpaperCommand(String action, int x, int y, 6716 int z, Bundle extras, boolean sync) { 6717 if (sync) { 6718 try { 6719 mWindowSession.wallpaperCommandComplete(asBinder(), null); 6720 } catch (RemoteException e) { 6721 } 6722 } 6723 } 6724 6725 /* Drag/drop */ 6726 @Override 6727 public void dispatchDragEvent(DragEvent event) { 6728 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6729 if (viewAncestor != null) { 6730 viewAncestor.dispatchDragEvent(event); 6731 } 6732 } 6733 6734 @Override 6735 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 6736 int localValue, int localChanges) { 6737 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6738 if (viewAncestor != null) { 6739 viewAncestor.dispatchSystemUiVisibilityChanged(seq, globalVisibility, 6740 localValue, localChanges); 6741 } 6742 } 6743 6744 @Override 6745 public void onAnimationStarted(int remainingFrameCount) { 6746 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6747 if (viewAncestor != null) { 6748 viewAncestor.dispatchWindowAnimationStarted(remainingFrameCount); 6749 } 6750 } 6751 6752 @Override 6753 public void onAnimationStopped() { 6754 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6755 if (viewAncestor != null) { 6756 viewAncestor.dispatchWindowAnimationStopped(); 6757 } 6758 } 6759 6760 @Override 6761 public void dispatchWindowShown() { 6762 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6763 if (viewAncestor != null) { 6764 viewAncestor.dispatchWindowShown(); 6765 } 6766 } 6767 } 6768 6769 public static final class CalledFromWrongThreadException extends AndroidRuntimeException { 6770 public CalledFromWrongThreadException(String msg) { 6771 super(msg); 6772 } 6773 } 6774 6775 static RunQueue getRunQueue() { 6776 RunQueue rq = sRunQueues.get(); 6777 if (rq != null) { 6778 return rq; 6779 } 6780 rq = new RunQueue(); 6781 sRunQueues.set(rq); 6782 return rq; 6783 } 6784 6785 /** 6786 * The run queue is used to enqueue pending work from Views when no Handler is 6787 * attached. The work is executed during the next call to performTraversals on 6788 * the thread. 6789 * @hide 6790 */ 6791 static final class RunQueue { 6792 private final ArrayList<HandlerAction> mActions = new ArrayList<HandlerAction>(); 6793 6794 void post(Runnable action) { 6795 postDelayed(action, 0); 6796 } 6797 6798 void postDelayed(Runnable action, long delayMillis) { 6799 HandlerAction handlerAction = new HandlerAction(); 6800 handlerAction.action = action; 6801 handlerAction.delay = delayMillis; 6802 6803 synchronized (mActions) { 6804 mActions.add(handlerAction); 6805 } 6806 } 6807 6808 void removeCallbacks(Runnable action) { 6809 final HandlerAction handlerAction = new HandlerAction(); 6810 handlerAction.action = action; 6811 6812 synchronized (mActions) { 6813 final ArrayList<HandlerAction> actions = mActions; 6814 6815 while (actions.remove(handlerAction)) { 6816 // Keep going 6817 } 6818 } 6819 } 6820 6821 void executeActions(Handler handler) { 6822 synchronized (mActions) { 6823 final ArrayList<HandlerAction> actions = mActions; 6824 final int count = actions.size(); 6825 6826 for (int i = 0; i < count; i++) { 6827 final HandlerAction handlerAction = actions.get(i); 6828 handler.postDelayed(handlerAction.action, handlerAction.delay); 6829 } 6830 6831 actions.clear(); 6832 } 6833 } 6834 6835 private static class HandlerAction { 6836 Runnable action; 6837 long delay; 6838 6839 @Override 6840 public boolean equals(Object o) { 6841 if (this == o) return true; 6842 if (o == null || getClass() != o.getClass()) return false; 6843 6844 HandlerAction that = (HandlerAction) o; 6845 return !(action != null ? !action.equals(that.action) : that.action != null); 6846 6847 } 6848 6849 @Override 6850 public int hashCode() { 6851 int result = action != null ? action.hashCode() : 0; 6852 result = 31 * result + (int) (delay ^ (delay >>> 32)); 6853 return result; 6854 } 6855 } 6856 } 6857 6858 /** 6859 * Class for managing the accessibility interaction connection 6860 * based on the global accessibility state. 6861 */ 6862 final class AccessibilityInteractionConnectionManager 6863 implements AccessibilityStateChangeListener { 6864 @Override 6865 public void onAccessibilityStateChanged(boolean enabled) { 6866 if (enabled) { 6867 ensureConnection(); 6868 if (mAttachInfo.mHasWindowFocus) { 6869 mView.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 6870 View focusedView = mView.findFocus(); 6871 if (focusedView != null && focusedView != mView) { 6872 focusedView.sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_FOCUSED); 6873 } 6874 } 6875 } else { 6876 ensureNoConnection(); 6877 mHandler.obtainMessage(MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST).sendToTarget(); 6878 } 6879 } 6880 6881 public void ensureConnection() { 6882 final boolean registered = 6883 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED_ITEM_ID; 6884 if (!registered) { 6885 mAttachInfo.mAccessibilityWindowId = 6886 mAccessibilityManager.addAccessibilityInteractionConnection(mWindow, 6887 new AccessibilityInteractionConnection(ViewRootImpl.this)); 6888 } 6889 } 6890 6891 public void ensureNoConnection() { 6892 final boolean registered = 6893 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED_ITEM_ID; 6894 if (registered) { 6895 mAttachInfo.mAccessibilityWindowId = AccessibilityNodeInfo.UNDEFINED_ITEM_ID; 6896 mAccessibilityManager.removeAccessibilityInteractionConnection(mWindow); 6897 } 6898 } 6899 } 6900 6901 final class HighContrastTextManager implements HighTextContrastChangeListener { 6902 HighContrastTextManager() { 6903 mAttachInfo.mHighContrastText = mAccessibilityManager.isHighTextContrastEnabled(); 6904 } 6905 @Override 6906 public void onHighTextContrastStateChanged(boolean enabled) { 6907 mAttachInfo.mHighContrastText = enabled; 6908 6909 // Destroy Displaylists so they can be recreated with high contrast recordings 6910 destroyHardwareResources(); 6911 6912 // Schedule redraw, which will rerecord + redraw all text 6913 invalidate(); 6914 } 6915 } 6916 6917 /** 6918 * This class is an interface this ViewAncestor provides to the 6919 * AccessibilityManagerService to the latter can interact with 6920 * the view hierarchy in this ViewAncestor. 6921 */ 6922 static final class AccessibilityInteractionConnection 6923 extends IAccessibilityInteractionConnection.Stub { 6924 private final WeakReference<ViewRootImpl> mViewRootImpl; 6925 6926 AccessibilityInteractionConnection(ViewRootImpl viewRootImpl) { 6927 mViewRootImpl = new WeakReference<ViewRootImpl>(viewRootImpl); 6928 } 6929 6930 @Override 6931 public void findAccessibilityNodeInfoByAccessibilityId(long accessibilityNodeId, 6932 Region interactiveRegion, int interactionId, 6933 IAccessibilityInteractionConnectionCallback callback, int flags, 6934 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6935 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6936 if (viewRootImpl != null && viewRootImpl.mView != null) { 6937 viewRootImpl.getAccessibilityInteractionController() 6938 .findAccessibilityNodeInfoByAccessibilityIdClientThread(accessibilityNodeId, 6939 interactiveRegion, interactionId, callback, flags, interrogatingPid, 6940 interrogatingTid, spec); 6941 } else { 6942 // We cannot make the call and notify the caller so it does not wait. 6943 try { 6944 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 6945 } catch (RemoteException re) { 6946 /* best effort - ignore */ 6947 } 6948 } 6949 } 6950 6951 @Override 6952 public void performAccessibilityAction(long accessibilityNodeId, int action, 6953 Bundle arguments, int interactionId, 6954 IAccessibilityInteractionConnectionCallback callback, int flags, 6955 int interrogatingPid, long interrogatingTid) { 6956 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6957 if (viewRootImpl != null && viewRootImpl.mView != null) { 6958 viewRootImpl.getAccessibilityInteractionController() 6959 .performAccessibilityActionClientThread(accessibilityNodeId, action, arguments, 6960 interactionId, callback, flags, interrogatingPid, interrogatingTid); 6961 } else { 6962 // We cannot make the call and notify the caller so it does not wait. 6963 try { 6964 callback.setPerformAccessibilityActionResult(false, interactionId); 6965 } catch (RemoteException re) { 6966 /* best effort - ignore */ 6967 } 6968 } 6969 } 6970 6971 @Override 6972 public void findAccessibilityNodeInfosByViewId(long accessibilityNodeId, 6973 String viewId, Region interactiveRegion, int interactionId, 6974 IAccessibilityInteractionConnectionCallback callback, int flags, 6975 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6976 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6977 if (viewRootImpl != null && viewRootImpl.mView != null) { 6978 viewRootImpl.getAccessibilityInteractionController() 6979 .findAccessibilityNodeInfosByViewIdClientThread(accessibilityNodeId, 6980 viewId, interactiveRegion, interactionId, callback, flags, 6981 interrogatingPid, interrogatingTid, spec); 6982 } else { 6983 // We cannot make the call and notify the caller so it does not wait. 6984 try { 6985 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6986 } catch (RemoteException re) { 6987 /* best effort - ignore */ 6988 } 6989 } 6990 } 6991 6992 @Override 6993 public void findAccessibilityNodeInfosByText(long accessibilityNodeId, String text, 6994 Region interactiveRegion, int interactionId, 6995 IAccessibilityInteractionConnectionCallback callback, int flags, 6996 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6997 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6998 if (viewRootImpl != null && viewRootImpl.mView != null) { 6999 viewRootImpl.getAccessibilityInteractionController() 7000 .findAccessibilityNodeInfosByTextClientThread(accessibilityNodeId, text, 7001 interactiveRegion, interactionId, callback, flags, interrogatingPid, 7002 interrogatingTid, spec); 7003 } else { 7004 // We cannot make the call and notify the caller so it does not wait. 7005 try { 7006 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 7007 } catch (RemoteException re) { 7008 /* best effort - ignore */ 7009 } 7010 } 7011 } 7012 7013 @Override 7014 public void findFocus(long accessibilityNodeId, int focusType, Region interactiveRegion, 7015 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 7016 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 7017 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 7018 if (viewRootImpl != null && viewRootImpl.mView != null) { 7019 viewRootImpl.getAccessibilityInteractionController() 7020 .findFocusClientThread(accessibilityNodeId, focusType, interactiveRegion, 7021 interactionId, callback, flags, interrogatingPid, interrogatingTid, 7022 spec); 7023 } else { 7024 // We cannot make the call and notify the caller so it does not wait. 7025 try { 7026 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 7027 } catch (RemoteException re) { 7028 /* best effort - ignore */ 7029 } 7030 } 7031 } 7032 7033 @Override 7034 public void focusSearch(long accessibilityNodeId, int direction, Region interactiveRegion, 7035 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 7036 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 7037 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 7038 if (viewRootImpl != null && viewRootImpl.mView != null) { 7039 viewRootImpl.getAccessibilityInteractionController() 7040 .focusSearchClientThread(accessibilityNodeId, direction, interactiveRegion, 7041 interactionId, callback, flags, interrogatingPid, interrogatingTid, 7042 spec); 7043 } else { 7044 // We cannot make the call and notify the caller so it does not wait. 7045 try { 7046 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 7047 } catch (RemoteException re) { 7048 /* best effort - ignore */ 7049 } 7050 } 7051 } 7052 } 7053 7054 private class SendWindowContentChangedAccessibilityEvent implements Runnable { 7055 private int mChangeTypes = 0; 7056 7057 public View mSource; 7058 public long mLastEventTimeMillis; 7059 7060 @Override 7061 public void run() { 7062 // The accessibility may be turned off while we were waiting so check again. 7063 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 7064 mLastEventTimeMillis = SystemClock.uptimeMillis(); 7065 AccessibilityEvent event = AccessibilityEvent.obtain(); 7066 event.setEventType(AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED); 7067 event.setContentChangeTypes(mChangeTypes); 7068 mSource.sendAccessibilityEventUnchecked(event); 7069 } else { 7070 mLastEventTimeMillis = 0; 7071 } 7072 // In any case reset to initial state. 7073 mSource.resetSubtreeAccessibilityStateChanged(); 7074 mSource = null; 7075 mChangeTypes = 0; 7076 } 7077 7078 public void runOrPost(View source, int changeType) { 7079 if (mSource != null) { 7080 // If there is no common predecessor, then mSource points to 7081 // a removed view, hence in this case always prefer the source. 7082 View predecessor = getCommonPredecessor(mSource, source); 7083 mSource = (predecessor != null) ? predecessor : source; 7084 mChangeTypes |= changeType; 7085 return; 7086 } 7087 mSource = source; 7088 mChangeTypes = changeType; 7089 final long timeSinceLastMillis = SystemClock.uptimeMillis() - mLastEventTimeMillis; 7090 final long minEventIntevalMillis = 7091 ViewConfiguration.getSendRecurringAccessibilityEventsInterval(); 7092 if (timeSinceLastMillis >= minEventIntevalMillis) { 7093 mSource.removeCallbacks(this); 7094 run(); 7095 } else { 7096 mSource.postDelayed(this, minEventIntevalMillis - timeSinceLastMillis); 7097 } 7098 } 7099 } 7100} 7101