ViewRootImpl.java revision 05eb730ca42eec3a40f916062af7442218135303
1/* 2 * Copyright (C) 2006 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.view; 18 19import android.Manifest; 20import android.animation.LayoutTransition; 21import android.app.ActivityManagerNative; 22import android.content.ClipDescription; 23import android.content.ComponentCallbacks; 24import android.content.ComponentCallbacks2; 25import android.content.Context; 26import android.content.pm.PackageManager; 27import android.content.res.CompatibilityInfo; 28import android.content.res.Configuration; 29import android.content.res.Resources; 30import android.graphics.Canvas; 31import android.graphics.Paint; 32import android.graphics.PixelFormat; 33import android.graphics.Point; 34import android.graphics.PointF; 35import android.graphics.PorterDuff; 36import android.graphics.Rect; 37import android.graphics.Region; 38import android.graphics.drawable.Drawable; 39import android.media.AudioManager; 40import android.os.Binder; 41import android.os.Bundle; 42import android.os.Debug; 43import android.os.Handler; 44import android.os.Looper; 45import android.os.Message; 46import android.os.ParcelFileDescriptor; 47import android.os.PowerManager; 48import android.os.Process; 49import android.os.RemoteException; 50import android.os.SystemClock; 51import android.os.SystemProperties; 52import android.os.Trace; 53import android.util.AndroidRuntimeException; 54import android.util.DisplayMetrics; 55import android.util.Log; 56import android.util.Slog; 57import android.util.TypedValue; 58import android.view.View.AttachInfo; 59import android.view.View.MeasureSpec; 60import android.view.accessibility.AccessibilityEvent; 61import android.view.accessibility.AccessibilityManager; 62import android.view.accessibility.AccessibilityManager.AccessibilityStateChangeListener; 63import android.view.accessibility.AccessibilityNodeInfo; 64import android.view.accessibility.AccessibilityNodeProvider; 65import android.view.accessibility.IAccessibilityInteractionConnection; 66import android.view.accessibility.IAccessibilityInteractionConnectionCallback; 67import android.view.animation.AccelerateDecelerateInterpolator; 68import android.view.animation.Interpolator; 69import android.view.inputmethod.InputConnection; 70import android.view.inputmethod.InputMethodManager; 71import android.widget.Scroller; 72 73import com.android.internal.R; 74import com.android.internal.os.SomeArgs; 75import com.android.internal.policy.PolicyManager; 76import com.android.internal.view.BaseSurfaceHolder; 77import com.android.internal.view.RootViewSurfaceTaker; 78 79import java.io.IOException; 80import java.io.OutputStream; 81import java.lang.ref.WeakReference; 82import java.util.ArrayList; 83import java.util.HashSet; 84 85/** 86 * The top of a view hierarchy, implementing the needed protocol between View 87 * and the WindowManager. This is for the most part an internal implementation 88 * detail of {@link WindowManagerGlobal}. 89 * 90 * {@hide} 91 */ 92@SuppressWarnings({"EmptyCatchBlock", "PointlessBooleanExpression"}) 93public final class ViewRootImpl implements ViewParent, 94 View.AttachInfo.Callbacks, HardwareRenderer.HardwareDrawCallbacks { 95 private static final String TAG = "ViewRootImpl"; 96 private static final boolean DBG = false; 97 private static final boolean LOCAL_LOGV = false; 98 /** @noinspection PointlessBooleanExpression*/ 99 private static final boolean DEBUG_DRAW = false || LOCAL_LOGV; 100 private static final boolean DEBUG_LAYOUT = false || LOCAL_LOGV; 101 private static final boolean DEBUG_DIALOG = false || LOCAL_LOGV; 102 private static final boolean DEBUG_INPUT_RESIZE = false || LOCAL_LOGV; 103 private static final boolean DEBUG_ORIENTATION = false || LOCAL_LOGV; 104 private static final boolean DEBUG_TRACKBALL = false || LOCAL_LOGV; 105 private static final boolean DEBUG_IMF = false || LOCAL_LOGV; 106 private static final boolean DEBUG_CONFIGURATION = false || LOCAL_LOGV; 107 private static final boolean DEBUG_FPS = false; 108 private static final boolean DEBUG_INPUT_PROCESSING = false || LOCAL_LOGV; 109 110 /** 111 * Set this system property to true to force the view hierarchy to render 112 * at 60 Hz. This can be used to measure the potential framerate. 113 */ 114 private static final String PROPERTY_PROFILE_RENDERING = "viewroot.profile_rendering"; 115 private static final String PROPERTY_MEDIA_DISABLED = "config.disable_media"; 116 117 /** 118 * Maximum time we allow the user to roll the trackball enough to generate 119 * a key event, before resetting the counters. 120 */ 121 static final int MAX_TRACKBALL_DELAY = 250; 122 123 static final ThreadLocal<RunQueue> sRunQueues = new ThreadLocal<RunQueue>(); 124 125 static final ArrayList<Runnable> sFirstDrawHandlers = new ArrayList<Runnable>(); 126 static boolean sFirstDrawComplete = false; 127 128 static final ArrayList<ComponentCallbacks> sConfigCallbacks 129 = new ArrayList<ComponentCallbacks>(); 130 131 final Context mContext; 132 final IWindowSession mWindowSession; 133 final Display mDisplay; 134 final String mBasePackageName; 135 136 final int[] mTmpLocation = new int[2]; 137 138 final TypedValue mTmpValue = new TypedValue(); 139 140 final Thread mThread; 141 142 final WindowLeaked mLocation; 143 144 final WindowManager.LayoutParams mWindowAttributes = new WindowManager.LayoutParams(); 145 146 final W mWindow; 147 148 final int mTargetSdkVersion; 149 150 int mSeq; 151 152 View mView; 153 154 View mAccessibilityFocusedHost; 155 AccessibilityNodeInfo mAccessibilityFocusedVirtualView; 156 157 int mViewVisibility; 158 boolean mAppVisible = true; 159 int mOrigWindowType = -1; 160 161 // Set to true if the owner of this window is in the stopped state, 162 // so the window should no longer be active. 163 boolean mStopped = false; 164 165 boolean mLastInCompatMode = false; 166 167 SurfaceHolder.Callback2 mSurfaceHolderCallback; 168 BaseSurfaceHolder mSurfaceHolder; 169 boolean mIsCreating; 170 boolean mDrawingAllowed; 171 172 final Region mTransparentRegion; 173 final Region mPreviousTransparentRegion; 174 175 int mWidth; 176 int mHeight; 177 Rect mDirty; 178 final Rect mCurrentDirty = new Rect(); 179 boolean mIsAnimating; 180 181 CompatibilityInfo.Translator mTranslator; 182 183 final View.AttachInfo mAttachInfo; 184 InputChannel mInputChannel; 185 InputQueue.Callback mInputQueueCallback; 186 InputQueue mInputQueue; 187 FallbackEventHandler mFallbackEventHandler; 188 Choreographer mChoreographer; 189 190 final Rect mTempRect; // used in the transaction to not thrash the heap. 191 final Rect mVisRect; // used to retrieve visible rect of focused view. 192 193 boolean mTraversalScheduled; 194 int mTraversalBarrier; 195 boolean mWillDrawSoon; 196 /** Set to true while in performTraversals for detecting when die(true) is called from internal 197 * callbacks such as onMeasure, onPreDraw, onDraw and deferring doDie() until later. */ 198 boolean mIsInTraversal; 199 boolean mFitSystemWindowsRequested; 200 boolean mLayoutRequested; 201 boolean mFirst; 202 boolean mReportNextDraw; 203 boolean mFullRedrawNeeded; 204 boolean mNewSurfaceNeeded; 205 boolean mHasHadWindowFocus; 206 boolean mLastWasImTarget; 207 boolean mWindowsAnimating; 208 boolean mDrawDuringWindowsAnimating; 209 boolean mIsDrawing; 210 int mLastSystemUiVisibility; 211 int mClientWindowLayoutFlags; 212 boolean mLastOverscanRequested; 213 214 // Pool of queued input events. 215 private static final int MAX_QUEUED_INPUT_EVENT_POOL_SIZE = 10; 216 private QueuedInputEvent mQueuedInputEventPool; 217 private int mQueuedInputEventPoolSize; 218 219 /* Input event queue. 220 * Pending input events are input events waiting to be delivered to the input stages 221 * and handled by the application. 222 */ 223 QueuedInputEvent mPendingInputEventHead; 224 QueuedInputEvent mPendingInputEventTail; 225 int mPendingInputEventCount; 226 boolean mProcessInputEventsScheduled; 227 String mPendingInputEventQueueLengthCounterName = "pq"; 228 229 InputStage mFirstInputStage; 230 InputStage mFirstPostImeInputStage; 231 232 boolean mWindowAttributesChanged = false; 233 int mWindowAttributesChangesFlag = 0; 234 235 // These can be accessed by any thread, must be protected with a lock. 236 // Surface can never be reassigned or cleared (use Surface.clear()). 237 private final Surface mSurface = new Surface(); 238 239 boolean mAdded; 240 boolean mAddedTouchMode; 241 242 final CompatibilityInfoHolder mCompatibilityInfo; 243 244 // These are accessed by multiple threads. 245 final Rect mWinFrame; // frame given by window manager. 246 247 final Rect mPendingOverscanInsets = new Rect(); 248 final Rect mPendingVisibleInsets = new Rect(); 249 final Rect mPendingContentInsets = new Rect(); 250 final ViewTreeObserver.InternalInsetsInfo mLastGivenInsets 251 = new ViewTreeObserver.InternalInsetsInfo(); 252 253 final Rect mFitSystemWindowsInsets = new Rect(); 254 255 final Configuration mLastConfiguration = new Configuration(); 256 final Configuration mPendingConfiguration = new Configuration(); 257 258 boolean mScrollMayChange; 259 int mSoftInputMode; 260 WeakReference<View> mLastScrolledFocus; 261 int mScrollY; 262 int mCurScrollY; 263 Scroller mScroller; 264 HardwareLayer mResizeBuffer; 265 long mResizeBufferStartTime; 266 int mResizeBufferDuration; 267 static final Interpolator mResizeInterpolator = new AccelerateDecelerateInterpolator(); 268 private ArrayList<LayoutTransition> mPendingTransitions; 269 270 final ViewConfiguration mViewConfiguration; 271 272 /* Drag/drop */ 273 ClipDescription mDragDescription; 274 View mCurrentDragView; 275 volatile Object mLocalDragState; 276 final PointF mDragPoint = new PointF(); 277 final PointF mLastTouchPoint = new PointF(); 278 279 private boolean mProfileRendering; 280 private Choreographer.FrameCallback mRenderProfiler; 281 private boolean mRenderProfilingEnabled; 282 283 private boolean mMediaDisabled; 284 285 // Variables to track frames per second, enabled via DEBUG_FPS flag 286 private long mFpsStartTime = -1; 287 private long mFpsPrevTime = -1; 288 private int mFpsNumFrames; 289 290 private final ArrayList<DisplayList> mDisplayLists = new ArrayList<DisplayList>(); 291 292 /** 293 * see {@link #playSoundEffect(int)} 294 */ 295 AudioManager mAudioManager; 296 297 final AccessibilityManager mAccessibilityManager; 298 299 AccessibilityInteractionController mAccessibilityInteractionController; 300 301 AccessibilityInteractionConnectionManager mAccessibilityInteractionConnectionManager; 302 303 SendWindowContentChangedAccessibilityEvent mSendWindowContentChangedAccessibilityEvent; 304 305 HashSet<View> mTempHashSet; 306 307 private final int mDensity; 308 private final int mNoncompatDensity; 309 310 private boolean mInLayout = false; 311 ArrayList<View> mLayoutRequesters = new ArrayList<View>(); 312 boolean mHandlingLayoutInLayoutRequest = false; 313 314 private int mViewLayoutDirectionInitial; 315 316 /** 317 * Consistency verifier for debugging purposes. 318 */ 319 protected final InputEventConsistencyVerifier mInputEventConsistencyVerifier = 320 InputEventConsistencyVerifier.isInstrumentationEnabled() ? 321 new InputEventConsistencyVerifier(this, 0) : null; 322 323 static final class SystemUiVisibilityInfo { 324 int seq; 325 int globalVisibility; 326 int localValue; 327 int localChanges; 328 } 329 330 public ViewRootImpl(Context context, Display display) { 331 mContext = context; 332 mWindowSession = WindowManagerGlobal.getWindowSession(); 333 mDisplay = display; 334 mBasePackageName = context.getBasePackageName(); 335 336 CompatibilityInfoHolder cih = display.getCompatibilityInfo(); 337 mCompatibilityInfo = cih != null ? cih : new CompatibilityInfoHolder(); 338 339 mThread = Thread.currentThread(); 340 mLocation = new WindowLeaked(null); 341 mLocation.fillInStackTrace(); 342 mWidth = -1; 343 mHeight = -1; 344 mDirty = new Rect(); 345 mTempRect = new Rect(); 346 mVisRect = new Rect(); 347 mWinFrame = new Rect(); 348 mWindow = new W(this); 349 mTargetSdkVersion = context.getApplicationInfo().targetSdkVersion; 350 mViewVisibility = View.GONE; 351 mTransparentRegion = new Region(); 352 mPreviousTransparentRegion = new Region(); 353 mFirst = true; // true for the first time the view is added 354 mAdded = false; 355 mAccessibilityManager = AccessibilityManager.getInstance(context); 356 mAccessibilityInteractionConnectionManager = 357 new AccessibilityInteractionConnectionManager(); 358 mAccessibilityManager.addAccessibilityStateChangeListener( 359 mAccessibilityInteractionConnectionManager); 360 mAttachInfo = new View.AttachInfo(mWindowSession, mWindow, display, this, mHandler, this); 361 mViewConfiguration = ViewConfiguration.get(context); 362 mDensity = context.getResources().getDisplayMetrics().densityDpi; 363 mNoncompatDensity = context.getResources().getDisplayMetrics().noncompatDensityDpi; 364 mFallbackEventHandler = PolicyManager.makeNewFallbackEventHandler(context); 365 mChoreographer = Choreographer.getInstance(); 366 367 PowerManager powerManager = (PowerManager) context.getSystemService(Context.POWER_SERVICE); 368 mAttachInfo.mScreenOn = powerManager.isScreenOn(); 369 loadSystemProperties(); 370 } 371 372 public static void addFirstDrawHandler(Runnable callback) { 373 synchronized (sFirstDrawHandlers) { 374 if (!sFirstDrawComplete) { 375 sFirstDrawHandlers.add(callback); 376 } 377 } 378 } 379 380 public static void addConfigCallback(ComponentCallbacks callback) { 381 synchronized (sConfigCallbacks) { 382 sConfigCallbacks.add(callback); 383 } 384 } 385 386 // FIXME for perf testing only 387 private boolean mProfile = false; 388 389 /** 390 * Call this to profile the next traversal call. 391 * FIXME for perf testing only. Remove eventually 392 */ 393 public void profile() { 394 mProfile = true; 395 } 396 397 /** 398 * Indicates whether we are in touch mode. Calling this method triggers an IPC 399 * call and should be avoided whenever possible. 400 * 401 * @return True, if the device is in touch mode, false otherwise. 402 * 403 * @hide 404 */ 405 static boolean isInTouchMode() { 406 IWindowSession windowSession = WindowManagerGlobal.peekWindowSession(); 407 if (windowSession != null) { 408 try { 409 return windowSession.getInTouchMode(); 410 } catch (RemoteException e) { 411 } 412 } 413 return false; 414 } 415 416 /** 417 * We have one child 418 */ 419 public void setView(View view, WindowManager.LayoutParams attrs, View panelParentView) { 420 synchronized (this) { 421 if (mView == null) { 422 mView = view; 423 mViewLayoutDirectionInitial = mView.getRawLayoutDirection(); 424 mFallbackEventHandler.setView(view); 425 mWindowAttributes.copyFrom(attrs); 426 if (mWindowAttributes.packageName == null) { 427 mWindowAttributes.packageName = mBasePackageName; 428 } 429 attrs = mWindowAttributes; 430 // Keep track of the actual window flags supplied by the client. 431 mClientWindowLayoutFlags = attrs.flags; 432 433 setAccessibilityFocus(null, null); 434 435 if (view instanceof RootViewSurfaceTaker) { 436 mSurfaceHolderCallback = 437 ((RootViewSurfaceTaker)view).willYouTakeTheSurface(); 438 if (mSurfaceHolderCallback != null) { 439 mSurfaceHolder = new TakenSurfaceHolder(); 440 mSurfaceHolder.setFormat(PixelFormat.UNKNOWN); 441 } 442 } 443 444 CompatibilityInfo compatibilityInfo = mCompatibilityInfo.get(); 445 mTranslator = compatibilityInfo.getTranslator(); 446 447 // If the application owns the surface, don't enable hardware acceleration 448 if (mSurfaceHolder == null) { 449 enableHardwareAcceleration(attrs); 450 } 451 452 boolean restore = false; 453 if (mTranslator != null) { 454 mSurface.setCompatibilityTranslator(mTranslator); 455 restore = true; 456 attrs.backup(); 457 mTranslator.translateWindowLayout(attrs); 458 } 459 if (DEBUG_LAYOUT) Log.d(TAG, "WindowLayout in setView:" + attrs); 460 461 if (!compatibilityInfo.supportsScreen()) { 462 attrs.flags |= WindowManager.LayoutParams.FLAG_COMPATIBLE_WINDOW; 463 mLastInCompatMode = true; 464 } 465 466 mSoftInputMode = attrs.softInputMode; 467 mWindowAttributesChanged = true; 468 mWindowAttributesChangesFlag = WindowManager.LayoutParams.EVERYTHING_CHANGED; 469 mAttachInfo.mRootView = view; 470 mAttachInfo.mScalingRequired = mTranslator != null; 471 mAttachInfo.mApplicationScale = 472 mTranslator == null ? 1.0f : mTranslator.applicationScale; 473 if (panelParentView != null) { 474 mAttachInfo.mPanelParentWindowToken 475 = panelParentView.getApplicationWindowToken(); 476 } 477 mAdded = true; 478 int res; /* = WindowManagerImpl.ADD_OKAY; */ 479 480 // Schedule the first layout -before- adding to the window 481 // manager, to make sure we do the relayout before receiving 482 // any other events from the system. 483 requestLayout(); 484 if ((mWindowAttributes.inputFeatures 485 & WindowManager.LayoutParams.INPUT_FEATURE_NO_INPUT_CHANNEL) == 0) { 486 mInputChannel = new InputChannel(); 487 } 488 try { 489 mOrigWindowType = mWindowAttributes.type; 490 mAttachInfo.mRecomputeGlobalAttributes = true; 491 collectViewAttributes(); 492 res = mWindowSession.addToDisplay(mWindow, mSeq, mWindowAttributes, 493 getHostVisibility(), mDisplay.getDisplayId(), 494 mAttachInfo.mContentInsets, mInputChannel); 495 } catch (RemoteException e) { 496 mAdded = false; 497 mView = null; 498 mAttachInfo.mRootView = null; 499 mInputChannel = null; 500 mFallbackEventHandler.setView(null); 501 unscheduleTraversals(); 502 setAccessibilityFocus(null, null); 503 throw new RuntimeException("Adding window failed", e); 504 } finally { 505 if (restore) { 506 attrs.restore(); 507 } 508 } 509 510 if (mTranslator != null) { 511 mTranslator.translateRectInScreenToAppWindow(mAttachInfo.mContentInsets); 512 } 513 mPendingOverscanInsets.set(0, 0, 0, 0); 514 mPendingContentInsets.set(mAttachInfo.mContentInsets); 515 mPendingVisibleInsets.set(0, 0, 0, 0); 516 if (DEBUG_LAYOUT) Log.v(TAG, "Added window " + mWindow); 517 if (res < WindowManagerGlobal.ADD_OKAY) { 518 mAttachInfo.mRootView = null; 519 mAdded = false; 520 mFallbackEventHandler.setView(null); 521 unscheduleTraversals(); 522 setAccessibilityFocus(null, null); 523 switch (res) { 524 case WindowManagerGlobal.ADD_BAD_APP_TOKEN: 525 case WindowManagerGlobal.ADD_BAD_SUBWINDOW_TOKEN: 526 throw new WindowManager.BadTokenException( 527 "Unable to add window -- token " + attrs.token 528 + " is not valid; is your activity running?"); 529 case WindowManagerGlobal.ADD_NOT_APP_TOKEN: 530 throw new WindowManager.BadTokenException( 531 "Unable to add window -- token " + attrs.token 532 + " is not for an application"); 533 case WindowManagerGlobal.ADD_APP_EXITING: 534 throw new WindowManager.BadTokenException( 535 "Unable to add window -- app for token " + attrs.token 536 + " is exiting"); 537 case WindowManagerGlobal.ADD_DUPLICATE_ADD: 538 throw new WindowManager.BadTokenException( 539 "Unable to add window -- window " + mWindow 540 + " has already been added"); 541 case WindowManagerGlobal.ADD_STARTING_NOT_NEEDED: 542 // Silently ignore -- we would have just removed it 543 // right away, anyway. 544 return; 545 case WindowManagerGlobal.ADD_MULTIPLE_SINGLETON: 546 throw new WindowManager.BadTokenException( 547 "Unable to add window " + mWindow + 548 " -- another window of this type already exists"); 549 case WindowManagerGlobal.ADD_PERMISSION_DENIED: 550 throw new WindowManager.BadTokenException( 551 "Unable to add window " + mWindow + 552 " -- permission denied for this window type"); 553 case WindowManagerGlobal.ADD_INVALID_DISPLAY: 554 throw new WindowManager.InvalidDisplayException( 555 "Unable to add window " + mWindow + 556 " -- the specified display can not be found"); 557 } 558 throw new RuntimeException( 559 "Unable to add window -- unknown error code " + res); 560 } 561 562 if (view instanceof RootViewSurfaceTaker) { 563 mInputQueueCallback = 564 ((RootViewSurfaceTaker)view).willYouTakeTheInputQueue(); 565 } 566 if (mInputChannel != null) { 567 if (mInputQueueCallback != null) { 568 mInputQueue = new InputQueue(); 569 mInputQueueCallback.onInputQueueCreated(mInputQueue); 570 } 571 mInputEventReceiver = new WindowInputEventReceiver(mInputChannel, 572 Looper.myLooper()); 573 } 574 575 view.assignParent(this); 576 mAddedTouchMode = (res & WindowManagerGlobal.ADD_FLAG_IN_TOUCH_MODE) != 0; 577 mAppVisible = (res & WindowManagerGlobal.ADD_FLAG_APP_VISIBLE) != 0; 578 579 if (mAccessibilityManager.isEnabled()) { 580 mAccessibilityInteractionConnectionManager.ensureConnection(); 581 } 582 583 if (view.getImportantForAccessibility() == View.IMPORTANT_FOR_ACCESSIBILITY_AUTO) { 584 view.setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_YES); 585 } 586 587 // Set up the input pipeline. 588 CharSequence counterSuffix = attrs.getTitle(); 589 InputStage syntheticStage = new SyntheticInputStage(); 590 InputStage viewPostImeStage = new ViewPostImeInputStage(syntheticStage); 591 InputStage nativePostImeStage = new NativePostImeInputStage(viewPostImeStage, 592 "aq:native-post-ime:" + counterSuffix); 593 InputStage earlyPostImeStage = new EarlyPostImeInputStage(nativePostImeStage); 594 InputStage imeStage = new ImeInputStage(earlyPostImeStage, 595 "aq:ime:" + counterSuffix); 596 InputStage viewPreImeStage = new ViewPreImeInputStage(imeStage); 597 InputStage nativePreImeStage = new NativePreImeInputStage(viewPreImeStage, 598 "aq:native-pre-ime:" + counterSuffix); 599 600 mFirstInputStage = nativePreImeStage; 601 mFirstPostImeInputStage = earlyPostImeStage; 602 mPendingInputEventQueueLengthCounterName = "aq:pending:" + counterSuffix; 603 } 604 } 605 } 606 607 void destroyHardwareResources() { 608 if (mAttachInfo.mHardwareRenderer != null) { 609 if (mAttachInfo.mHardwareRenderer.isEnabled()) { 610 mAttachInfo.mHardwareRenderer.destroyLayers(mView); 611 } 612 mAttachInfo.mHardwareRenderer.destroy(false); 613 } 614 } 615 616 void terminateHardwareResources() { 617 if (mAttachInfo.mHardwareRenderer != null) { 618 mAttachInfo.mHardwareRenderer.destroyHardwareResources(mView); 619 mAttachInfo.mHardwareRenderer.destroy(false); 620 } 621 } 622 623 void destroyHardwareLayers() { 624 if (mThread != Thread.currentThread()) { 625 if (mAttachInfo.mHardwareRenderer != null && 626 mAttachInfo.mHardwareRenderer.isEnabled()) { 627 HardwareRenderer.trimMemory(ComponentCallbacks2.TRIM_MEMORY_MODERATE); 628 } 629 } else { 630 if (mAttachInfo.mHardwareRenderer != null && 631 mAttachInfo.mHardwareRenderer.isEnabled()) { 632 mAttachInfo.mHardwareRenderer.destroyLayers(mView); 633 } 634 } 635 } 636 637 void pushHardwareLayerUpdate(HardwareLayer layer) { 638 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled()) { 639 mAttachInfo.mHardwareRenderer.pushLayerUpdate(layer); 640 } 641 } 642 643 public boolean attachFunctor(int functor) { 644 //noinspection SimplifiableIfStatement 645 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled()) { 646 return mAttachInfo.mHardwareRenderer.attachFunctor(mAttachInfo, functor); 647 } 648 return false; 649 } 650 651 public void detachFunctor(int functor) { 652 if (mAttachInfo.mHardwareRenderer != null) { 653 mAttachInfo.mHardwareRenderer.detachFunctor(functor); 654 } 655 } 656 657 private void enableHardwareAcceleration(WindowManager.LayoutParams attrs) { 658 mAttachInfo.mHardwareAccelerated = false; 659 mAttachInfo.mHardwareAccelerationRequested = false; 660 661 // Don't enable hardware acceleration when the application is in compatibility mode 662 if (mTranslator != null) return; 663 664 // Try to enable hardware acceleration if requested 665 final boolean hardwareAccelerated = 666 (attrs.flags & WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED) != 0; 667 668 if (hardwareAccelerated) { 669 if (!HardwareRenderer.isAvailable()) { 670 return; 671 } 672 673 // Persistent processes (including the system) should not do 674 // accelerated rendering on low-end devices. In that case, 675 // sRendererDisabled will be set. In addition, the system process 676 // itself should never do accelerated rendering. In that case, both 677 // sRendererDisabled and sSystemRendererDisabled are set. When 678 // sSystemRendererDisabled is set, PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED 679 // can be used by code on the system process to escape that and enable 680 // HW accelerated drawing. (This is basically for the lock screen.) 681 682 final boolean fakeHwAccelerated = (attrs.privateFlags & 683 WindowManager.LayoutParams.PRIVATE_FLAG_FAKE_HARDWARE_ACCELERATED) != 0; 684 final boolean forceHwAccelerated = (attrs.privateFlags & 685 WindowManager.LayoutParams.PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED) != 0; 686 687 if (!HardwareRenderer.sRendererDisabled || (HardwareRenderer.sSystemRendererDisabled 688 && forceHwAccelerated)) { 689 // Don't enable hardware acceleration when we're not on the main thread 690 if (!HardwareRenderer.sSystemRendererDisabled && 691 Looper.getMainLooper() != Looper.myLooper()) { 692 Log.w(HardwareRenderer.LOG_TAG, "Attempting to initialize hardware " 693 + "acceleration outside of the main thread, aborting"); 694 return; 695 } 696 697 if (mAttachInfo.mHardwareRenderer != null) { 698 mAttachInfo.mHardwareRenderer.destroy(true); 699 } 700 701 final boolean translucent = attrs.format != PixelFormat.OPAQUE; 702 mAttachInfo.mHardwareRenderer = HardwareRenderer.createGlRenderer(2, translucent); 703 if (mAttachInfo.mHardwareRenderer != null) { 704 mAttachInfo.mHardwareRenderer.setName(attrs.getTitle().toString()); 705 mAttachInfo.mHardwareAccelerated = 706 mAttachInfo.mHardwareAccelerationRequested = true; 707 } 708 } else if (fakeHwAccelerated) { 709 // The window had wanted to use hardware acceleration, but this 710 // is not allowed in its process. By setting this flag, it can 711 // still render as if it was accelerated. This is basically for 712 // the preview windows the window manager shows for launching 713 // applications, so they will look more like the app being launched. 714 mAttachInfo.mHardwareAccelerationRequested = true; 715 } 716 } 717 } 718 719 public View getView() { 720 return mView; 721 } 722 723 final WindowLeaked getLocation() { 724 return mLocation; 725 } 726 727 void setLayoutParams(WindowManager.LayoutParams attrs, boolean newView) { 728 synchronized (this) { 729 int oldSoftInputMode = mWindowAttributes.softInputMode; 730 // Keep track of the actual window flags supplied by the client. 731 mClientWindowLayoutFlags = attrs.flags; 732 // preserve compatible window flag if exists. 733 int compatibleWindowFlag = 734 mWindowAttributes.flags & WindowManager.LayoutParams.FLAG_COMPATIBLE_WINDOW; 735 // transfer over system UI visibility values as they carry current state. 736 attrs.systemUiVisibility = mWindowAttributes.systemUiVisibility; 737 attrs.subtreeSystemUiVisibility = mWindowAttributes.subtreeSystemUiVisibility; 738 mWindowAttributesChangesFlag = mWindowAttributes.copyFrom(attrs); 739 if (mWindowAttributes.packageName == null) { 740 mWindowAttributes.packageName = mBasePackageName; 741 } 742 mWindowAttributes.flags |= compatibleWindowFlag; 743 744 applyKeepScreenOnFlag(mWindowAttributes); 745 746 if (newView) { 747 mSoftInputMode = attrs.softInputMode; 748 requestLayout(); 749 } 750 // Don't lose the mode we last auto-computed. 751 if ((attrs.softInputMode&WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 752 == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 753 mWindowAttributes.softInputMode = (mWindowAttributes.softInputMode 754 & ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 755 | (oldSoftInputMode 756 & WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST); 757 } 758 mWindowAttributesChanged = true; 759 scheduleTraversals(); 760 } 761 } 762 763 void handleAppVisibility(boolean visible) { 764 if (mAppVisible != visible) { 765 mAppVisible = visible; 766 scheduleTraversals(); 767 } 768 } 769 770 void handleGetNewSurface() { 771 mNewSurfaceNeeded = true; 772 mFullRedrawNeeded = true; 773 scheduleTraversals(); 774 } 775 776 void handleScreenStateChange(boolean on) { 777 if (on != mAttachInfo.mScreenOn) { 778 mAttachInfo.mScreenOn = on; 779 if (mView != null) { 780 mView.dispatchScreenStateChanged(on ? View.SCREEN_STATE_ON : View.SCREEN_STATE_OFF); 781 } 782 if (on) { 783 mFullRedrawNeeded = true; 784 scheduleTraversals(); 785 } 786 } 787 } 788 789 @Override 790 public void requestFitSystemWindows() { 791 checkThread(); 792 mFitSystemWindowsRequested = true; 793 scheduleTraversals(); 794 } 795 796 @Override 797 public void requestLayout() { 798 if (!mHandlingLayoutInLayoutRequest) { 799 checkThread(); 800 mLayoutRequested = true; 801 scheduleTraversals(); 802 } 803 } 804 805 @Override 806 public boolean isLayoutRequested() { 807 return mLayoutRequested; 808 } 809 810 void invalidate() { 811 mDirty.set(0, 0, mWidth, mHeight); 812 scheduleTraversals(); 813 } 814 815 void invalidateWorld(View view) { 816 view.invalidate(); 817 if (view instanceof ViewGroup) { 818 ViewGroup parent = (ViewGroup) view; 819 for (int i = 0; i < parent.getChildCount(); i++) { 820 invalidateWorld(parent.getChildAt(i)); 821 } 822 } 823 } 824 825 @Override 826 public void invalidateChild(View child, Rect dirty) { 827 invalidateChildInParent(null, dirty); 828 } 829 830 public ViewParent invalidateChildInParent(int[] location, Rect dirty) { 831 checkThread(); 832 if (DEBUG_DRAW) Log.v(TAG, "Invalidate child: " + dirty); 833 834 if (dirty == null) { 835 invalidate(); 836 return null; 837 } else if (dirty.isEmpty() && !mIsAnimating) { 838 return null; 839 } 840 841 if (mCurScrollY != 0 || mTranslator != null) { 842 mTempRect.set(dirty); 843 dirty = mTempRect; 844 if (mCurScrollY != 0) { 845 dirty.offset(0, -mCurScrollY); 846 } 847 if (mTranslator != null) { 848 mTranslator.translateRectInAppWindowToScreen(dirty); 849 } 850 if (mAttachInfo.mScalingRequired) { 851 dirty.inset(-1, -1); 852 } 853 } 854 855 final Rect localDirty = mDirty; 856 if (!localDirty.isEmpty() && !localDirty.contains(dirty)) { 857 mAttachInfo.mSetIgnoreDirtyState = true; 858 mAttachInfo.mIgnoreDirtyState = true; 859 } 860 861 // Add the new dirty rect to the current one 862 localDirty.union(dirty.left, dirty.top, dirty.right, dirty.bottom); 863 // Intersect with the bounds of the window to skip 864 // updates that lie outside of the visible region 865 final float appScale = mAttachInfo.mApplicationScale; 866 final boolean intersected = localDirty.intersect(0, 0, 867 (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 868 if (!intersected) { 869 localDirty.setEmpty(); 870 } 871 if (!mWillDrawSoon && (intersected || mIsAnimating)) { 872 scheduleTraversals(); 873 } 874 875 return null; 876 } 877 878 void setStopped(boolean stopped) { 879 if (mStopped != stopped) { 880 mStopped = stopped; 881 if (!stopped) { 882 scheduleTraversals(); 883 } 884 } 885 } 886 887 public ViewParent getParent() { 888 return null; 889 } 890 891 public boolean getChildVisibleRect(View child, Rect r, android.graphics.Point offset) { 892 if (child != mView) { 893 throw new RuntimeException("child is not mine, honest!"); 894 } 895 // Note: don't apply scroll offset, because we want to know its 896 // visibility in the virtual canvas being given to the view hierarchy. 897 return r.intersect(0, 0, mWidth, mHeight); 898 } 899 900 public void bringChildToFront(View child) { 901 } 902 903 int getHostVisibility() { 904 return mAppVisible ? mView.getVisibility() : View.GONE; 905 } 906 907 void disposeResizeBuffer() { 908 if (mResizeBuffer != null) { 909 mResizeBuffer.destroy(); 910 mResizeBuffer = null; 911 } 912 } 913 914 /** 915 * Add LayoutTransition to the list of transitions to be started in the next traversal. 916 * This list will be cleared after the transitions on the list are start()'ed. These 917 * transitionsa re added by LayoutTransition itself when it sets up animations. The setup 918 * happens during the layout phase of traversal, which we want to complete before any of the 919 * animations are started (because those animations may side-effect properties that layout 920 * depends upon, like the bounding rectangles of the affected views). So we add the transition 921 * to the list and it is started just prior to starting the drawing phase of traversal. 922 * 923 * @param transition The LayoutTransition to be started on the next traversal. 924 * 925 * @hide 926 */ 927 public void requestTransitionStart(LayoutTransition transition) { 928 if (mPendingTransitions == null || !mPendingTransitions.contains(transition)) { 929 if (mPendingTransitions == null) { 930 mPendingTransitions = new ArrayList<LayoutTransition>(); 931 } 932 mPendingTransitions.add(transition); 933 } 934 } 935 936 void scheduleTraversals() { 937 if (!mTraversalScheduled) { 938 mTraversalScheduled = true; 939 mTraversalBarrier = mHandler.getLooper().postSyncBarrier(); 940 mChoreographer.postCallback( 941 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 942 scheduleConsumeBatchedInput(); 943 } 944 } 945 946 void unscheduleTraversals() { 947 if (mTraversalScheduled) { 948 mTraversalScheduled = false; 949 mHandler.getLooper().removeSyncBarrier(mTraversalBarrier); 950 mChoreographer.removeCallbacks( 951 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 952 } 953 } 954 955 void doTraversal() { 956 if (mTraversalScheduled) { 957 mTraversalScheduled = false; 958 mHandler.getLooper().removeSyncBarrier(mTraversalBarrier); 959 960 if (mProfile) { 961 Debug.startMethodTracing("ViewAncestor"); 962 } 963 964 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "performTraversals"); 965 try { 966 performTraversals(); 967 } finally { 968 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 969 } 970 971 if (mProfile) { 972 Debug.stopMethodTracing(); 973 mProfile = false; 974 } 975 } 976 } 977 978 private void applyKeepScreenOnFlag(WindowManager.LayoutParams params) { 979 // Update window's global keep screen on flag: if a view has requested 980 // that the screen be kept on, then it is always set; otherwise, it is 981 // set to whatever the client last requested for the global state. 982 if (mAttachInfo.mKeepScreenOn) { 983 params.flags |= WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON; 984 } else { 985 params.flags = (params.flags&~WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON) 986 | (mClientWindowLayoutFlags&WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 987 } 988 } 989 990 private boolean collectViewAttributes() { 991 final View.AttachInfo attachInfo = mAttachInfo; 992 if (attachInfo.mRecomputeGlobalAttributes) { 993 //Log.i(TAG, "Computing view hierarchy attributes!"); 994 attachInfo.mRecomputeGlobalAttributes = false; 995 boolean oldScreenOn = attachInfo.mKeepScreenOn; 996 attachInfo.mKeepScreenOn = false; 997 attachInfo.mSystemUiVisibility = 0; 998 attachInfo.mHasSystemUiListeners = false; 999 mView.dispatchCollectViewAttributes(attachInfo, 0); 1000 attachInfo.mSystemUiVisibility &= ~attachInfo.mDisabledSystemUiVisibility; 1001 WindowManager.LayoutParams params = mWindowAttributes; 1002 if (attachInfo.mKeepScreenOn != oldScreenOn 1003 || attachInfo.mSystemUiVisibility != params.subtreeSystemUiVisibility 1004 || attachInfo.mHasSystemUiListeners != params.hasSystemUiListeners) { 1005 applyKeepScreenOnFlag(params); 1006 params.subtreeSystemUiVisibility = attachInfo.mSystemUiVisibility; 1007 params.hasSystemUiListeners = attachInfo.mHasSystemUiListeners; 1008 mView.dispatchWindowSystemUiVisiblityChanged(attachInfo.mSystemUiVisibility); 1009 return true; 1010 } 1011 } 1012 return false; 1013 } 1014 1015 private boolean measureHierarchy(final View host, final WindowManager.LayoutParams lp, 1016 final Resources res, final int desiredWindowWidth, final int desiredWindowHeight) { 1017 int childWidthMeasureSpec; 1018 int childHeightMeasureSpec; 1019 boolean windowSizeMayChange = false; 1020 1021 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) Log.v(TAG, 1022 "Measuring " + host + " in display " + desiredWindowWidth 1023 + "x" + desiredWindowHeight + "..."); 1024 1025 boolean goodMeasure = false; 1026 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT) { 1027 // On large screens, we don't want to allow dialogs to just 1028 // stretch to fill the entire width of the screen to display 1029 // one line of text. First try doing the layout at a smaller 1030 // size to see if it will fit. 1031 final DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1032 res.getValue(com.android.internal.R.dimen.config_prefDialogWidth, mTmpValue, true); 1033 int baseSize = 0; 1034 if (mTmpValue.type == TypedValue.TYPE_DIMENSION) { 1035 baseSize = (int)mTmpValue.getDimension(packageMetrics); 1036 } 1037 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": baseSize=" + baseSize); 1038 if (baseSize != 0 && desiredWindowWidth > baseSize) { 1039 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1040 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1041 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1042 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": measured (" 1043 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1044 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1045 goodMeasure = true; 1046 } else { 1047 // Didn't fit in that size... try expanding a bit. 1048 baseSize = (baseSize+desiredWindowWidth)/2; 1049 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": next baseSize=" 1050 + baseSize); 1051 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1052 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1053 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": measured (" 1054 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1055 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1056 if (DEBUG_DIALOG) Log.v(TAG, "Good!"); 1057 goodMeasure = true; 1058 } 1059 } 1060 } 1061 } 1062 1063 if (!goodMeasure) { 1064 childWidthMeasureSpec = getRootMeasureSpec(desiredWindowWidth, lp.width); 1065 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1066 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1067 if (mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) { 1068 windowSizeMayChange = true; 1069 } 1070 } 1071 1072 if (DBG) { 1073 System.out.println("======================================"); 1074 System.out.println("performTraversals -- after measure"); 1075 host.debug(); 1076 } 1077 1078 return windowSizeMayChange; 1079 } 1080 1081 private void performTraversals() { 1082 // cache mView since it is used so much below... 1083 final View host = mView; 1084 1085 if (DBG) { 1086 System.out.println("======================================"); 1087 System.out.println("performTraversals"); 1088 host.debug(); 1089 } 1090 1091 if (host == null || !mAdded) 1092 return; 1093 1094 mIsInTraversal = true; 1095 mWillDrawSoon = true; 1096 boolean windowSizeMayChange = false; 1097 boolean newSurface = false; 1098 boolean surfaceChanged = false; 1099 WindowManager.LayoutParams lp = mWindowAttributes; 1100 1101 int desiredWindowWidth; 1102 int desiredWindowHeight; 1103 1104 final View.AttachInfo attachInfo = mAttachInfo; 1105 1106 final int viewVisibility = getHostVisibility(); 1107 boolean viewVisibilityChanged = mViewVisibility != viewVisibility 1108 || mNewSurfaceNeeded; 1109 1110 WindowManager.LayoutParams params = null; 1111 if (mWindowAttributesChanged) { 1112 mWindowAttributesChanged = false; 1113 surfaceChanged = true; 1114 params = lp; 1115 } 1116 CompatibilityInfo compatibilityInfo = mCompatibilityInfo.get(); 1117 if (compatibilityInfo.supportsScreen() == mLastInCompatMode) { 1118 params = lp; 1119 mFullRedrawNeeded = true; 1120 mLayoutRequested = true; 1121 if (mLastInCompatMode) { 1122 params.flags &= ~WindowManager.LayoutParams.FLAG_COMPATIBLE_WINDOW; 1123 mLastInCompatMode = false; 1124 } else { 1125 params.flags |= WindowManager.LayoutParams.FLAG_COMPATIBLE_WINDOW; 1126 mLastInCompatMode = true; 1127 } 1128 } 1129 1130 mWindowAttributesChangesFlag = 0; 1131 1132 Rect frame = mWinFrame; 1133 if (mFirst) { 1134 mFullRedrawNeeded = true; 1135 mLayoutRequested = true; 1136 1137 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL) { 1138 // NOTE -- system code, won't try to do compat mode. 1139 Point size = new Point(); 1140 mDisplay.getRealSize(size); 1141 desiredWindowWidth = size.x; 1142 desiredWindowHeight = size.y; 1143 } else { 1144 DisplayMetrics packageMetrics = 1145 mView.getContext().getResources().getDisplayMetrics(); 1146 desiredWindowWidth = packageMetrics.widthPixels; 1147 desiredWindowHeight = packageMetrics.heightPixels; 1148 } 1149 1150 // For the very first time, tell the view hierarchy that it 1151 // is attached to the window. Note that at this point the surface 1152 // object is not initialized to its backing store, but soon it 1153 // will be (assuming the window is visible). 1154 attachInfo.mSurface = mSurface; 1155 // We used to use the following condition to choose 32 bits drawing caches: 1156 // PixelFormat.hasAlpha(lp.format) || lp.format == PixelFormat.RGBX_8888 1157 // However, windows are now always 32 bits by default, so choose 32 bits 1158 attachInfo.mUse32BitDrawingCache = true; 1159 attachInfo.mHasWindowFocus = false; 1160 attachInfo.mWindowVisibility = viewVisibility; 1161 attachInfo.mRecomputeGlobalAttributes = false; 1162 viewVisibilityChanged = false; 1163 mLastConfiguration.setTo(host.getResources().getConfiguration()); 1164 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1165 // Set the layout direction if it has not been set before (inherit is the default) 1166 if (mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 1167 host.setLayoutDirection(mLastConfiguration.getLayoutDirection()); 1168 } 1169 host.dispatchAttachedToWindow(attachInfo, 0); 1170 attachInfo.mTreeObserver.dispatchOnWindowAttachedChange(true); 1171 mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets); 1172 host.fitSystemWindows(mFitSystemWindowsInsets); 1173 //Log.i(TAG, "Screen on initialized: " + attachInfo.mKeepScreenOn); 1174 1175 } else { 1176 desiredWindowWidth = frame.width(); 1177 desiredWindowHeight = frame.height(); 1178 if (desiredWindowWidth != mWidth || desiredWindowHeight != mHeight) { 1179 if (DEBUG_ORIENTATION) Log.v(TAG, 1180 "View " + host + " resized to: " + frame); 1181 mFullRedrawNeeded = true; 1182 mLayoutRequested = true; 1183 windowSizeMayChange = true; 1184 } 1185 } 1186 1187 if (viewVisibilityChanged) { 1188 attachInfo.mWindowVisibility = viewVisibility; 1189 host.dispatchWindowVisibilityChanged(viewVisibility); 1190 if (viewVisibility != View.VISIBLE || mNewSurfaceNeeded) { 1191 destroyHardwareResources(); 1192 } 1193 if (viewVisibility == View.GONE) { 1194 // After making a window gone, we will count it as being 1195 // shown for the first time the next time it gets focus. 1196 mHasHadWindowFocus = false; 1197 } 1198 } 1199 1200 // Execute enqueued actions on every traversal in case a detached view enqueued an action 1201 getRunQueue().executeActions(attachInfo.mHandler); 1202 1203 boolean insetsChanged = false; 1204 1205 boolean layoutRequested = mLayoutRequested && !mStopped; 1206 if (layoutRequested) { 1207 1208 final Resources res = mView.getContext().getResources(); 1209 1210 if (mFirst) { 1211 // make sure touch mode code executes by setting cached value 1212 // to opposite of the added touch mode. 1213 mAttachInfo.mInTouchMode = !mAddedTouchMode; 1214 ensureTouchModeLocally(mAddedTouchMode); 1215 } else { 1216 if (!mPendingOverscanInsets.equals(mAttachInfo.mOverscanInsets)) { 1217 insetsChanged = true; 1218 } 1219 if (!mPendingContentInsets.equals(mAttachInfo.mContentInsets)) { 1220 insetsChanged = true; 1221 } 1222 if (!mPendingVisibleInsets.equals(mAttachInfo.mVisibleInsets)) { 1223 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1224 if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: " 1225 + mAttachInfo.mVisibleInsets); 1226 } 1227 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT 1228 || lp.height == ViewGroup.LayoutParams.WRAP_CONTENT) { 1229 windowSizeMayChange = true; 1230 1231 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL) { 1232 // NOTE -- system code, won't try to do compat mode. 1233 Point size = new Point(); 1234 mDisplay.getRealSize(size); 1235 desiredWindowWidth = size.x; 1236 desiredWindowHeight = size.y; 1237 } else { 1238 DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1239 desiredWindowWidth = packageMetrics.widthPixels; 1240 desiredWindowHeight = packageMetrics.heightPixels; 1241 } 1242 } 1243 } 1244 1245 // Ask host how big it wants to be 1246 windowSizeMayChange |= measureHierarchy(host, lp, res, 1247 desiredWindowWidth, desiredWindowHeight); 1248 } 1249 1250 if (collectViewAttributes()) { 1251 params = lp; 1252 } 1253 if (attachInfo.mForceReportNewAttributes) { 1254 attachInfo.mForceReportNewAttributes = false; 1255 params = lp; 1256 } 1257 1258 if (mFirst || attachInfo.mViewVisibilityChanged) { 1259 attachInfo.mViewVisibilityChanged = false; 1260 int resizeMode = mSoftInputMode & 1261 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST; 1262 // If we are in auto resize mode, then we need to determine 1263 // what mode to use now. 1264 if (resizeMode == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 1265 final int N = attachInfo.mScrollContainers.size(); 1266 for (int i=0; i<N; i++) { 1267 if (attachInfo.mScrollContainers.get(i).isShown()) { 1268 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE; 1269 } 1270 } 1271 if (resizeMode == 0) { 1272 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_PAN; 1273 } 1274 if ((lp.softInputMode & 1275 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) != resizeMode) { 1276 lp.softInputMode = (lp.softInputMode & 1277 ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) | 1278 resizeMode; 1279 params = lp; 1280 } 1281 } 1282 } 1283 1284 if (params != null) { 1285 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 1286 if (!PixelFormat.formatHasAlpha(params.format)) { 1287 params.format = PixelFormat.TRANSLUCENT; 1288 } 1289 } 1290 mAttachInfo.mOverscanRequested = (params.flags 1291 & WindowManager.LayoutParams.FLAG_LAYOUT_IN_OVERSCAN) != 0; 1292 } 1293 1294 if (mFitSystemWindowsRequested) { 1295 mFitSystemWindowsRequested = false; 1296 mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets); 1297 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1298 host.fitSystemWindows(mFitSystemWindowsInsets); 1299 if (mLayoutRequested) { 1300 // Short-circuit catching a new layout request here, so 1301 // we don't need to go through two layout passes when things 1302 // change due to fitting system windows, which can happen a lot. 1303 windowSizeMayChange |= measureHierarchy(host, lp, 1304 mView.getContext().getResources(), 1305 desiredWindowWidth, desiredWindowHeight); 1306 } 1307 } 1308 1309 if (layoutRequested) { 1310 // Clear this now, so that if anything requests a layout in the 1311 // rest of this function we will catch it and re-run a full 1312 // layout pass. 1313 mLayoutRequested = false; 1314 } 1315 1316 boolean windowShouldResize = layoutRequested && windowSizeMayChange 1317 && ((mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) 1318 || (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT && 1319 frame.width() < desiredWindowWidth && frame.width() != mWidth) 1320 || (lp.height == ViewGroup.LayoutParams.WRAP_CONTENT && 1321 frame.height() < desiredWindowHeight && frame.height() != mHeight)); 1322 1323 final boolean computesInternalInsets = 1324 attachInfo.mTreeObserver.hasComputeInternalInsetsListeners(); 1325 1326 boolean insetsPending = false; 1327 int relayoutResult = 0; 1328 1329 if (mFirst || windowShouldResize || insetsChanged || 1330 viewVisibilityChanged || params != null) { 1331 1332 if (viewVisibility == View.VISIBLE) { 1333 // If this window is giving internal insets to the window 1334 // manager, and it is being added or changing its visibility, 1335 // then we want to first give the window manager "fake" 1336 // insets to cause it to effectively ignore the content of 1337 // the window during layout. This avoids it briefly causing 1338 // other windows to resize/move based on the raw frame of the 1339 // window, waiting until we can finish laying out this window 1340 // and get back to the window manager with the ultimately 1341 // computed insets. 1342 insetsPending = computesInternalInsets && (mFirst || viewVisibilityChanged); 1343 } 1344 1345 if (mSurfaceHolder != null) { 1346 mSurfaceHolder.mSurfaceLock.lock(); 1347 mDrawingAllowed = true; 1348 } 1349 1350 boolean hwInitialized = false; 1351 boolean contentInsetsChanged = false; 1352 boolean hadSurface = mSurface.isValid(); 1353 1354 try { 1355 if (DEBUG_LAYOUT) { 1356 Log.i(TAG, "host=w:" + host.getMeasuredWidth() + ", h:" + 1357 host.getMeasuredHeight() + ", params=" + params); 1358 } 1359 1360 final int surfaceGenerationId = mSurface.getGenerationId(); 1361 relayoutResult = relayoutWindow(params, viewVisibility, insetsPending); 1362 if (!mDrawDuringWindowsAnimating) { 1363 mWindowsAnimating |= 1364 (relayoutResult & WindowManagerGlobal.RELAYOUT_RES_ANIMATING) != 0; 1365 } 1366 1367 if (DEBUG_LAYOUT) Log.v(TAG, "relayout: frame=" + frame.toShortString() 1368 + " overscan=" + mPendingOverscanInsets.toShortString() 1369 + " content=" + mPendingContentInsets.toShortString() 1370 + " visible=" + mPendingVisibleInsets.toShortString() 1371 + " surface=" + mSurface); 1372 1373 if (mPendingConfiguration.seq != 0) { 1374 if (DEBUG_CONFIGURATION) Log.v(TAG, "Visible with new config: " 1375 + mPendingConfiguration); 1376 updateConfiguration(mPendingConfiguration, !mFirst); 1377 mPendingConfiguration.seq = 0; 1378 } 1379 1380 final boolean overscanInsetsChanged = !mPendingOverscanInsets.equals( 1381 mAttachInfo.mOverscanInsets); 1382 contentInsetsChanged = !mPendingContentInsets.equals( 1383 mAttachInfo.mContentInsets); 1384 final boolean visibleInsetsChanged = !mPendingVisibleInsets.equals( 1385 mAttachInfo.mVisibleInsets); 1386 if (contentInsetsChanged) { 1387 if (mWidth > 0 && mHeight > 0 && lp != null && 1388 ((lp.systemUiVisibility|lp.subtreeSystemUiVisibility) 1389 & View.SYSTEM_UI_LAYOUT_FLAGS) == 0 && 1390 mSurface != null && mSurface.isValid() && 1391 !mAttachInfo.mTurnOffWindowResizeAnim && 1392 mAttachInfo.mHardwareRenderer != null && 1393 mAttachInfo.mHardwareRenderer.isEnabled() && 1394 mAttachInfo.mHardwareRenderer.validate() && 1395 lp != null && !PixelFormat.formatHasAlpha(lp.format)) { 1396 1397 disposeResizeBuffer(); 1398 1399 boolean completed = false; 1400 HardwareCanvas hwRendererCanvas = mAttachInfo.mHardwareRenderer.getCanvas(); 1401 HardwareCanvas layerCanvas = null; 1402 try { 1403 if (mResizeBuffer == null) { 1404 mResizeBuffer = mAttachInfo.mHardwareRenderer.createHardwareLayer( 1405 mWidth, mHeight, false); 1406 } else if (mResizeBuffer.getWidth() != mWidth || 1407 mResizeBuffer.getHeight() != mHeight) { 1408 mResizeBuffer.resize(mWidth, mHeight); 1409 } 1410 // TODO: should handle create/resize failure 1411 layerCanvas = mResizeBuffer.start(hwRendererCanvas); 1412 final int restoreCount = layerCanvas.save(); 1413 1414 int yoff; 1415 final boolean scrolling = mScroller != null 1416 && mScroller.computeScrollOffset(); 1417 if (scrolling) { 1418 yoff = mScroller.getCurrY(); 1419 mScroller.abortAnimation(); 1420 } else { 1421 yoff = mScrollY; 1422 } 1423 1424 layerCanvas.translate(0, -yoff); 1425 if (mTranslator != null) { 1426 mTranslator.translateCanvas(layerCanvas); 1427 } 1428 1429 DisplayList displayList = mView.mDisplayList; 1430 if (displayList != null) { 1431 layerCanvas.drawDisplayList(displayList, null, 1432 DisplayList.FLAG_CLIP_CHILDREN); 1433 } else { 1434 mView.draw(layerCanvas); 1435 } 1436 1437 drawAccessibilityFocusedDrawableIfNeeded(layerCanvas); 1438 1439 mResizeBufferStartTime = SystemClock.uptimeMillis(); 1440 mResizeBufferDuration = mView.getResources().getInteger( 1441 com.android.internal.R.integer.config_mediumAnimTime); 1442 completed = true; 1443 1444 layerCanvas.restoreToCount(restoreCount); 1445 } catch (OutOfMemoryError e) { 1446 Log.w(TAG, "Not enough memory for content change anim buffer", e); 1447 } finally { 1448 if (mResizeBuffer != null) { 1449 mResizeBuffer.end(hwRendererCanvas); 1450 if (!completed) { 1451 mResizeBuffer.destroy(); 1452 mResizeBuffer = null; 1453 } 1454 } 1455 } 1456 } 1457 mAttachInfo.mContentInsets.set(mPendingContentInsets); 1458 if (DEBUG_LAYOUT) Log.v(TAG, "Content insets changing to: " 1459 + mAttachInfo.mContentInsets); 1460 } 1461 if (overscanInsetsChanged) { 1462 mAttachInfo.mOverscanInsets.set(mPendingOverscanInsets); 1463 if (DEBUG_LAYOUT) Log.v(TAG, "Overscan insets changing to: " 1464 + mAttachInfo.mOverscanInsets); 1465 // Need to relayout with content insets. 1466 contentInsetsChanged = true; 1467 } 1468 if (contentInsetsChanged || mLastSystemUiVisibility != 1469 mAttachInfo.mSystemUiVisibility || mFitSystemWindowsRequested 1470 || mLastOverscanRequested != mAttachInfo.mOverscanRequested) { 1471 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1472 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1473 mFitSystemWindowsRequested = false; 1474 mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets); 1475 host.fitSystemWindows(mFitSystemWindowsInsets); 1476 } 1477 if (visibleInsetsChanged) { 1478 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1479 if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: " 1480 + mAttachInfo.mVisibleInsets); 1481 } 1482 1483 if (!hadSurface) { 1484 if (mSurface.isValid()) { 1485 // If we are creating a new surface, then we need to 1486 // completely redraw it. Also, when we get to the 1487 // point of drawing it we will hold off and schedule 1488 // a new traversal instead. This is so we can tell the 1489 // window manager about all of the windows being displayed 1490 // before actually drawing them, so it can display then 1491 // all at once. 1492 newSurface = true; 1493 mFullRedrawNeeded = true; 1494 mPreviousTransparentRegion.setEmpty(); 1495 1496 if (mAttachInfo.mHardwareRenderer != null) { 1497 try { 1498 hwInitialized = mAttachInfo.mHardwareRenderer.initialize( 1499 mHolder.getSurface()); 1500 } catch (Surface.OutOfResourcesException e) { 1501 handleOutOfResourcesException(e); 1502 return; 1503 } 1504 } 1505 } 1506 } else if (!mSurface.isValid()) { 1507 // If the surface has been removed, then reset the scroll 1508 // positions. 1509 if (mLastScrolledFocus != null) { 1510 mLastScrolledFocus.clear(); 1511 } 1512 mScrollY = mCurScrollY = 0; 1513 if (mScroller != null) { 1514 mScroller.abortAnimation(); 1515 } 1516 disposeResizeBuffer(); 1517 // Our surface is gone 1518 if (mAttachInfo.mHardwareRenderer != null && 1519 mAttachInfo.mHardwareRenderer.isEnabled()) { 1520 mAttachInfo.mHardwareRenderer.destroy(true); 1521 } 1522 } else if (surfaceGenerationId != mSurface.getGenerationId() && 1523 mSurfaceHolder == null && mAttachInfo.mHardwareRenderer != null) { 1524 mFullRedrawNeeded = true; 1525 try { 1526 mAttachInfo.mHardwareRenderer.updateSurface(mHolder.getSurface()); 1527 } catch (Surface.OutOfResourcesException e) { 1528 handleOutOfResourcesException(e); 1529 return; 1530 } 1531 } 1532 } catch (RemoteException e) { 1533 } 1534 1535 if (DEBUG_ORIENTATION) Log.v( 1536 TAG, "Relayout returned: frame=" + frame + ", surface=" + mSurface); 1537 1538 attachInfo.mWindowLeft = frame.left; 1539 attachInfo.mWindowTop = frame.top; 1540 1541 // !!FIXME!! This next section handles the case where we did not get the 1542 // window size we asked for. We should avoid this by getting a maximum size from 1543 // the window session beforehand. 1544 if (mWidth != frame.width() || mHeight != frame.height()) { 1545 mWidth = frame.width(); 1546 mHeight = frame.height(); 1547 } 1548 1549 if (mSurfaceHolder != null) { 1550 // The app owns the surface; tell it about what is going on. 1551 if (mSurface.isValid()) { 1552 // XXX .copyFrom() doesn't work! 1553 //mSurfaceHolder.mSurface.copyFrom(mSurface); 1554 mSurfaceHolder.mSurface = mSurface; 1555 } 1556 mSurfaceHolder.setSurfaceFrameSize(mWidth, mHeight); 1557 mSurfaceHolder.mSurfaceLock.unlock(); 1558 if (mSurface.isValid()) { 1559 if (!hadSurface) { 1560 mSurfaceHolder.ungetCallbacks(); 1561 1562 mIsCreating = true; 1563 mSurfaceHolderCallback.surfaceCreated(mSurfaceHolder); 1564 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1565 if (callbacks != null) { 1566 for (SurfaceHolder.Callback c : callbacks) { 1567 c.surfaceCreated(mSurfaceHolder); 1568 } 1569 } 1570 surfaceChanged = true; 1571 } 1572 if (surfaceChanged) { 1573 mSurfaceHolderCallback.surfaceChanged(mSurfaceHolder, 1574 lp.format, mWidth, mHeight); 1575 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1576 if (callbacks != null) { 1577 for (SurfaceHolder.Callback c : callbacks) { 1578 c.surfaceChanged(mSurfaceHolder, lp.format, 1579 mWidth, mHeight); 1580 } 1581 } 1582 } 1583 mIsCreating = false; 1584 } else if (hadSurface) { 1585 mSurfaceHolder.ungetCallbacks(); 1586 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1587 mSurfaceHolderCallback.surfaceDestroyed(mSurfaceHolder); 1588 if (callbacks != null) { 1589 for (SurfaceHolder.Callback c : callbacks) { 1590 c.surfaceDestroyed(mSurfaceHolder); 1591 } 1592 } 1593 mSurfaceHolder.mSurfaceLock.lock(); 1594 try { 1595 mSurfaceHolder.mSurface = new Surface(); 1596 } finally { 1597 mSurfaceHolder.mSurfaceLock.unlock(); 1598 } 1599 } 1600 } 1601 1602 if (mAttachInfo.mHardwareRenderer != null && 1603 mAttachInfo.mHardwareRenderer.isEnabled()) { 1604 if (hwInitialized || 1605 mWidth != mAttachInfo.mHardwareRenderer.getWidth() || 1606 mHeight != mAttachInfo.mHardwareRenderer.getHeight()) { 1607 mAttachInfo.mHardwareRenderer.setup(mWidth, mHeight); 1608 if (!hwInitialized) { 1609 mAttachInfo.mHardwareRenderer.invalidate(mHolder.getSurface()); 1610 mFullRedrawNeeded = true; 1611 } 1612 } 1613 } 1614 1615 if (!mStopped) { 1616 boolean focusChangedDueToTouchMode = ensureTouchModeLocally( 1617 (relayoutResult&WindowManagerGlobal.RELAYOUT_RES_IN_TOUCH_MODE) != 0); 1618 if (focusChangedDueToTouchMode || mWidth != host.getMeasuredWidth() 1619 || mHeight != host.getMeasuredHeight() || contentInsetsChanged) { 1620 int childWidthMeasureSpec = getRootMeasureSpec(mWidth, lp.width); 1621 int childHeightMeasureSpec = getRootMeasureSpec(mHeight, lp.height); 1622 1623 if (DEBUG_LAYOUT) Log.v(TAG, "Ooops, something changed! mWidth=" 1624 + mWidth + " measuredWidth=" + host.getMeasuredWidth() 1625 + " mHeight=" + mHeight 1626 + " measuredHeight=" + host.getMeasuredHeight() 1627 + " coveredInsetsChanged=" + contentInsetsChanged); 1628 1629 // Ask host how big it wants to be 1630 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1631 1632 // Implementation of weights from WindowManager.LayoutParams 1633 // We just grow the dimensions as needed and re-measure if 1634 // needs be 1635 int width = host.getMeasuredWidth(); 1636 int height = host.getMeasuredHeight(); 1637 boolean measureAgain = false; 1638 1639 if (lp.horizontalWeight > 0.0f) { 1640 width += (int) ((mWidth - width) * lp.horizontalWeight); 1641 childWidthMeasureSpec = MeasureSpec.makeMeasureSpec(width, 1642 MeasureSpec.EXACTLY); 1643 measureAgain = true; 1644 } 1645 if (lp.verticalWeight > 0.0f) { 1646 height += (int) ((mHeight - height) * lp.verticalWeight); 1647 childHeightMeasureSpec = MeasureSpec.makeMeasureSpec(height, 1648 MeasureSpec.EXACTLY); 1649 measureAgain = true; 1650 } 1651 1652 if (measureAgain) { 1653 if (DEBUG_LAYOUT) Log.v(TAG, 1654 "And hey let's measure once more: width=" + width 1655 + " height=" + height); 1656 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1657 } 1658 1659 layoutRequested = true; 1660 } 1661 } 1662 } else { 1663 // Not the first pass and no window/insets/visibility change but the window 1664 // may have moved and we need check that and if so to update the left and right 1665 // in the attach info. We translate only the window frame since on window move 1666 // the window manager tells us only for the new frame but the insets are the 1667 // same and we do not want to translate them more than once. 1668 1669 // TODO: Well, we are checking whether the frame has changed similarly 1670 // to how this is done for the insets. This is however incorrect since 1671 // the insets and the frame are translated. For example, the old frame 1672 // was (1, 1 - 1, 1) and was translated to say (2, 2 - 2, 2), now the new 1673 // reported frame is (2, 2 - 2, 2) which implies no change but this is not 1674 // true since we are comparing a not translated value to a translated one. 1675 // This scenario is rare but we may want to fix that. 1676 1677 final boolean windowMoved = (attachInfo.mWindowLeft != frame.left 1678 || attachInfo.mWindowTop != frame.top); 1679 if (windowMoved) { 1680 if (mTranslator != null) { 1681 mTranslator.translateRectInScreenToAppWinFrame(frame); 1682 } 1683 attachInfo.mWindowLeft = frame.left; 1684 attachInfo.mWindowTop = frame.top; 1685 } 1686 } 1687 1688 final boolean didLayout = layoutRequested && !mStopped; 1689 boolean triggerGlobalLayoutListener = didLayout 1690 || attachInfo.mRecomputeGlobalAttributes; 1691 if (didLayout) { 1692 performLayout(lp, desiredWindowWidth, desiredWindowHeight); 1693 1694 // By this point all views have been sized and positioned 1695 // We can compute the transparent area 1696 1697 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 1698 // start out transparent 1699 // TODO: AVOID THAT CALL BY CACHING THE RESULT? 1700 host.getLocationInWindow(mTmpLocation); 1701 mTransparentRegion.set(mTmpLocation[0], mTmpLocation[1], 1702 mTmpLocation[0] + host.mRight - host.mLeft, 1703 mTmpLocation[1] + host.mBottom - host.mTop); 1704 1705 host.gatherTransparentRegion(mTransparentRegion); 1706 if (mTranslator != null) { 1707 mTranslator.translateRegionInWindowToScreen(mTransparentRegion); 1708 } 1709 1710 if (!mTransparentRegion.equals(mPreviousTransparentRegion)) { 1711 mPreviousTransparentRegion.set(mTransparentRegion); 1712 mFullRedrawNeeded = true; 1713 // reconfigure window manager 1714 try { 1715 mWindowSession.setTransparentRegion(mWindow, mTransparentRegion); 1716 } catch (RemoteException e) { 1717 } 1718 } 1719 } 1720 1721 if (DBG) { 1722 System.out.println("======================================"); 1723 System.out.println("performTraversals -- after setFrame"); 1724 host.debug(); 1725 } 1726 } 1727 1728 if (triggerGlobalLayoutListener) { 1729 attachInfo.mRecomputeGlobalAttributes = false; 1730 attachInfo.mTreeObserver.dispatchOnGlobalLayout(); 1731 1732 if (AccessibilityManager.getInstance(host.mContext).isEnabled()) { 1733 postSendWindowContentChangedCallback(mView); 1734 } 1735 } 1736 1737 if (computesInternalInsets) { 1738 // Clear the original insets. 1739 final ViewTreeObserver.InternalInsetsInfo insets = attachInfo.mGivenInternalInsets; 1740 insets.reset(); 1741 1742 // Compute new insets in place. 1743 attachInfo.mTreeObserver.dispatchOnComputeInternalInsets(insets); 1744 1745 // Tell the window manager. 1746 if (insetsPending || !mLastGivenInsets.equals(insets)) { 1747 mLastGivenInsets.set(insets); 1748 1749 // Translate insets to screen coordinates if needed. 1750 final Rect contentInsets; 1751 final Rect visibleInsets; 1752 final Region touchableRegion; 1753 if (mTranslator != null) { 1754 contentInsets = mTranslator.getTranslatedContentInsets(insets.contentInsets); 1755 visibleInsets = mTranslator.getTranslatedVisibleInsets(insets.visibleInsets); 1756 touchableRegion = mTranslator.getTranslatedTouchableArea(insets.touchableRegion); 1757 } else { 1758 contentInsets = insets.contentInsets; 1759 visibleInsets = insets.visibleInsets; 1760 touchableRegion = insets.touchableRegion; 1761 } 1762 1763 try { 1764 mWindowSession.setInsets(mWindow, insets.mTouchableInsets, 1765 contentInsets, visibleInsets, touchableRegion); 1766 } catch (RemoteException e) { 1767 } 1768 } 1769 } 1770 1771 boolean skipDraw = false; 1772 1773 if (mFirst) { 1774 // handle first focus request 1775 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: mView.hasFocus()=" 1776 + mView.hasFocus()); 1777 if (mView != null) { 1778 if (!mView.hasFocus()) { 1779 mView.requestFocus(View.FOCUS_FORWARD); 1780 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: requested focused view=" 1781 + mView.findFocus()); 1782 } else { 1783 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: existing focused view=" 1784 + mView.findFocus()); 1785 } 1786 } 1787 if ((relayoutResult & WindowManagerGlobal.RELAYOUT_RES_ANIMATING) != 0) { 1788 // The first time we relayout the window, if the system is 1789 // doing window animations, we want to hold of on any future 1790 // draws until the animation is done. 1791 mWindowsAnimating = true; 1792 } 1793 } else if (mWindowsAnimating) { 1794 skipDraw = true; 1795 } 1796 1797 mFirst = false; 1798 mWillDrawSoon = false; 1799 mNewSurfaceNeeded = false; 1800 mViewVisibility = viewVisibility; 1801 1802 if (mAttachInfo.mHasWindowFocus) { 1803 final boolean imTarget = WindowManager.LayoutParams 1804 .mayUseInputMethod(mWindowAttributes.flags); 1805 if (imTarget != mLastWasImTarget) { 1806 mLastWasImTarget = imTarget; 1807 InputMethodManager imm = InputMethodManager.peekInstance(); 1808 if (imm != null && imTarget) { 1809 imm.startGettingWindowFocus(mView); 1810 imm.onWindowFocus(mView, mView.findFocus(), 1811 mWindowAttributes.softInputMode, 1812 !mHasHadWindowFocus, mWindowAttributes.flags); 1813 } 1814 } 1815 } 1816 1817 // Remember if we must report the next draw. 1818 if ((relayoutResult & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 1819 mReportNextDraw = true; 1820 } 1821 1822 boolean cancelDraw = attachInfo.mTreeObserver.dispatchOnPreDraw() || 1823 viewVisibility != View.VISIBLE; 1824 1825 if (!cancelDraw && !newSurface) { 1826 if (!skipDraw || mReportNextDraw) { 1827 if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 1828 for (int i = 0; i < mPendingTransitions.size(); ++i) { 1829 mPendingTransitions.get(i).startChangingAnimations(); 1830 } 1831 mPendingTransitions.clear(); 1832 } 1833 1834 performDraw(); 1835 } 1836 } else { 1837 if (viewVisibility == View.VISIBLE) { 1838 // Try again 1839 scheduleTraversals(); 1840 } else if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 1841 for (int i = 0; i < mPendingTransitions.size(); ++i) { 1842 mPendingTransitions.get(i).endChangingAnimations(); 1843 } 1844 mPendingTransitions.clear(); 1845 } 1846 } 1847 1848 mIsInTraversal = false; 1849 } 1850 1851 private void handleOutOfResourcesException(Surface.OutOfResourcesException e) { 1852 Log.e(TAG, "OutOfResourcesException initializing HW surface", e); 1853 try { 1854 if (!mWindowSession.outOfMemory(mWindow) && 1855 Process.myUid() != Process.SYSTEM_UID) { 1856 Slog.w(TAG, "No processes killed for memory; killing self"); 1857 Process.killProcess(Process.myPid()); 1858 } 1859 } catch (RemoteException ex) { 1860 } 1861 mLayoutRequested = true; // ask wm for a new surface next time. 1862 } 1863 1864 private void performMeasure(int childWidthMeasureSpec, int childHeightMeasureSpec) { 1865 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "measure"); 1866 try { 1867 mView.measure(childWidthMeasureSpec, childHeightMeasureSpec); 1868 } finally { 1869 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 1870 } 1871 } 1872 1873 /** 1874 * Called by {@link android.view.View#isInLayout()} to determine whether the view hierarchy 1875 * is currently undergoing a layout pass. 1876 * 1877 * @return whether the view hierarchy is currently undergoing a layout pass 1878 */ 1879 boolean isInLayout() { 1880 return mInLayout; 1881 } 1882 1883 /** 1884 * Called by {@link android.view.View#requestLayout()} if the view hierarchy is currently 1885 * undergoing a layout pass. requestLayout() should not generally be called during layout, 1886 * unless the container hierarchy knows what it is doing (i.e., it is fine as long as 1887 * all children in that container hierarchy are measured and laid out at the end of the layout 1888 * pass for that container). If requestLayout() is called anyway, we handle it correctly 1889 * by registering all requesters during a frame as it proceeds. At the end of the frame, 1890 * we check all of those views to see if any still have pending layout requests, which 1891 * indicates that they were not correctly handled by their container hierarchy. If that is 1892 * the case, we clear all such flags in the tree, to remove the buggy flag state that leads 1893 * to blank containers, and force a second request/measure/layout pass in this frame. If 1894 * more requestLayout() calls are received during that second layout pass, we post those 1895 * requests to the next frame to avoid possible infinite loops. 1896 * 1897 * <p>The return value from this method indicates whether the request should proceed 1898 * (if it is a request during the first layout pass) or should be skipped and posted to the 1899 * next frame (if it is a request during the second layout pass).</p> 1900 * 1901 * @param view the view that requested the layout. 1902 * 1903 * @return true if request should proceed, false otherwise. 1904 */ 1905 boolean requestLayoutDuringLayout(final View view) { 1906 if (view.mParent == null || view.mAttachInfo == null) { 1907 // Would not normally trigger another layout, so just let it pass through as usual 1908 return true; 1909 } 1910 if (!mLayoutRequesters.contains(view)) { 1911 mLayoutRequesters.add(view); 1912 } 1913 if (!mHandlingLayoutInLayoutRequest) { 1914 // Let the request proceed normally; it will be processed in a second layout pass 1915 // if necessary 1916 return true; 1917 } else { 1918 // Don't let the request proceed during the second layout pass. 1919 // It will post to the next frame instead. 1920 return false; 1921 } 1922 } 1923 1924 private void performLayout(WindowManager.LayoutParams lp, int desiredWindowWidth, 1925 int desiredWindowHeight) { 1926 mLayoutRequested = false; 1927 mScrollMayChange = true; 1928 mInLayout = true; 1929 1930 final View host = mView; 1931 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) { 1932 Log.v(TAG, "Laying out " + host + " to (" + 1933 host.getMeasuredWidth() + ", " + host.getMeasuredHeight() + ")"); 1934 } 1935 1936 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "layout"); 1937 try { 1938 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 1939 1940 mInLayout = false; 1941 int numViewsRequestingLayout = mLayoutRequesters.size(); 1942 if (numViewsRequestingLayout > 0) { 1943 // requestLayout() was called during layout. 1944 // If no layout-request flags are set on the requesting views, there is no problem. 1945 // If some requests are still pending, then we need to clear those flags and do 1946 // a full request/measure/layout pass to handle this situation. 1947 ArrayList<View> validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, 1948 false); 1949 if (validLayoutRequesters != null) { 1950 // Set this flag to indicate that any further requests are happening during 1951 // the second pass, which may result in posting those requests to the next 1952 // frame instead 1953 mHandlingLayoutInLayoutRequest = true; 1954 1955 // Process fresh layout requests, then measure and layout 1956 int numValidRequests = validLayoutRequesters.size(); 1957 for (int i = 0; i < numValidRequests; ++i) { 1958 final View view = validLayoutRequesters.get(i); 1959 Log.w("View", "requestLayout() improperly called by " + view + 1960 " during layout: running second layout pass"); 1961 view.requestLayout(); 1962 } 1963 measureHierarchy(host, lp, mView.getContext().getResources(), 1964 desiredWindowWidth, desiredWindowHeight); 1965 mInLayout = true; 1966 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 1967 1968 mHandlingLayoutInLayoutRequest = false; 1969 1970 // Check the valid requests again, this time without checking/clearing the 1971 // layout flags, since requests happening during the second pass get noop'd 1972 validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, true); 1973 if (validLayoutRequesters != null) { 1974 final ArrayList<View> finalRequesters = validLayoutRequesters; 1975 // Post second-pass requests to the next frame 1976 getRunQueue().post(new Runnable() { 1977 @Override 1978 public void run() { 1979 int numValidRequests = finalRequesters.size(); 1980 for (int i = 0; i < numValidRequests; ++i) { 1981 final View view = finalRequesters.get(i); 1982 Log.w("View", "requestLayout() improperly called by " + view + 1983 " during second layout pass: posting in next frame"); 1984 view.requestLayout(); 1985 } 1986 } 1987 }); 1988 } 1989 } 1990 1991 } 1992 } finally { 1993 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 1994 } 1995 mInLayout = false; 1996 } 1997 1998 /** 1999 * This method is called during layout when there have been calls to requestLayout() during 2000 * layout. It walks through the list of views that requested layout to determine which ones 2001 * still need it, based on visibility in the hierarchy and whether they have already been 2002 * handled (as is usually the case with ListView children). 2003 * 2004 * @param layoutRequesters The list of views that requested layout during layout 2005 * @param secondLayoutRequests Whether the requests were issued during the second layout pass. 2006 * If so, the FORCE_LAYOUT flag was not set on requesters. 2007 * @return A list of the actual views that still need to be laid out. 2008 */ 2009 private ArrayList<View> getValidLayoutRequesters(ArrayList<View> layoutRequesters, 2010 boolean secondLayoutRequests) { 2011 2012 int numViewsRequestingLayout = layoutRequesters.size(); 2013 ArrayList<View> validLayoutRequesters = null; 2014 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2015 View view = layoutRequesters.get(i); 2016 if (view != null && view.mAttachInfo != null && view.mParent != null && 2017 (secondLayoutRequests || (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) == 2018 View.PFLAG_FORCE_LAYOUT)) { 2019 boolean gone = false; 2020 View parent = view; 2021 // Only trigger new requests for views in a non-GONE hierarchy 2022 while (parent != null) { 2023 if ((parent.mViewFlags & View.VISIBILITY_MASK) == View.GONE) { 2024 gone = true; 2025 break; 2026 } 2027 if (parent.mParent instanceof View) { 2028 parent = (View) parent.mParent; 2029 } else { 2030 parent = null; 2031 } 2032 } 2033 if (!gone) { 2034 if (validLayoutRequesters == null) { 2035 validLayoutRequesters = new ArrayList<View>(); 2036 } 2037 validLayoutRequesters.add(view); 2038 } 2039 } 2040 } 2041 if (!secondLayoutRequests) { 2042 // If we're checking the layout flags, then we need to clean them up also 2043 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2044 View view = layoutRequesters.get(i); 2045 while (view != null && 2046 (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) != 0) { 2047 view.mPrivateFlags &= ~View.PFLAG_FORCE_LAYOUT; 2048 if (view.mParent instanceof View) { 2049 view = (View) view.mParent; 2050 } else { 2051 view = null; 2052 } 2053 } 2054 } 2055 } 2056 layoutRequesters.clear(); 2057 return validLayoutRequesters; 2058 } 2059 2060 public void requestTransparentRegion(View child) { 2061 // the test below should not fail unless someone is messing with us 2062 checkThread(); 2063 if (mView == child) { 2064 mView.mPrivateFlags |= View.PFLAG_REQUEST_TRANSPARENT_REGIONS; 2065 // Need to make sure we re-evaluate the window attributes next 2066 // time around, to ensure the window has the correct format. 2067 mWindowAttributesChanged = true; 2068 mWindowAttributesChangesFlag = 0; 2069 requestLayout(); 2070 } 2071 } 2072 2073 /** 2074 * Figures out the measure spec for the root view in a window based on it's 2075 * layout params. 2076 * 2077 * @param windowSize 2078 * The available width or height of the window 2079 * 2080 * @param rootDimension 2081 * The layout params for one dimension (width or height) of the 2082 * window. 2083 * 2084 * @return The measure spec to use to measure the root view. 2085 */ 2086 private static int getRootMeasureSpec(int windowSize, int rootDimension) { 2087 int measureSpec; 2088 switch (rootDimension) { 2089 2090 case ViewGroup.LayoutParams.MATCH_PARENT: 2091 // Window can't resize. Force root view to be windowSize. 2092 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.EXACTLY); 2093 break; 2094 case ViewGroup.LayoutParams.WRAP_CONTENT: 2095 // Window can resize. Set max size for root view. 2096 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.AT_MOST); 2097 break; 2098 default: 2099 // Window wants to be an exact size. Force root view to be that size. 2100 measureSpec = MeasureSpec.makeMeasureSpec(rootDimension, MeasureSpec.EXACTLY); 2101 break; 2102 } 2103 return measureSpec; 2104 } 2105 2106 int mHardwareYOffset; 2107 int mResizeAlpha; 2108 final Paint mResizePaint = new Paint(); 2109 2110 public void onHardwarePreDraw(HardwareCanvas canvas) { 2111 canvas.translate(0, -mHardwareYOffset); 2112 } 2113 2114 public void onHardwarePostDraw(HardwareCanvas canvas) { 2115 if (mResizeBuffer != null) { 2116 mResizePaint.setAlpha(mResizeAlpha); 2117 canvas.drawHardwareLayer(mResizeBuffer, 0.0f, mHardwareYOffset, mResizePaint); 2118 } 2119 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2120 } 2121 2122 /** 2123 * @hide 2124 */ 2125 void outputDisplayList(View view) { 2126 if (mAttachInfo != null && mAttachInfo.mHardwareCanvas != null) { 2127 DisplayList displayList = view.getDisplayList(); 2128 if (displayList != null) { 2129 mAttachInfo.mHardwareCanvas.outputDisplayList(displayList); 2130 } 2131 } 2132 } 2133 2134 /** 2135 * @see #PROPERTY_PROFILE_RENDERING 2136 */ 2137 private void profileRendering(boolean enabled) { 2138 if (mProfileRendering) { 2139 mRenderProfilingEnabled = enabled; 2140 2141 if (mRenderProfiler != null) { 2142 mChoreographer.removeFrameCallback(mRenderProfiler); 2143 } 2144 if (mRenderProfilingEnabled) { 2145 if (mRenderProfiler == null) { 2146 mRenderProfiler = new Choreographer.FrameCallback() { 2147 @Override 2148 public void doFrame(long frameTimeNanos) { 2149 mDirty.set(0, 0, mWidth, mHeight); 2150 scheduleTraversals(); 2151 if (mRenderProfilingEnabled) { 2152 mChoreographer.postFrameCallback(mRenderProfiler); 2153 } 2154 } 2155 }; 2156 } 2157 mChoreographer.postFrameCallback(mRenderProfiler); 2158 } else { 2159 mRenderProfiler = null; 2160 } 2161 } 2162 } 2163 2164 /** 2165 * Called from draw() when DEBUG_FPS is enabled 2166 */ 2167 private void trackFPS() { 2168 // Tracks frames per second drawn. First value in a series of draws may be bogus 2169 // because it down not account for the intervening idle time 2170 long nowTime = System.currentTimeMillis(); 2171 if (mFpsStartTime < 0) { 2172 mFpsStartTime = mFpsPrevTime = nowTime; 2173 mFpsNumFrames = 0; 2174 } else { 2175 ++mFpsNumFrames; 2176 String thisHash = Integer.toHexString(System.identityHashCode(this)); 2177 long frameTime = nowTime - mFpsPrevTime; 2178 long totalTime = nowTime - mFpsStartTime; 2179 Log.v(TAG, "0x" + thisHash + "\tFrame time:\t" + frameTime); 2180 mFpsPrevTime = nowTime; 2181 if (totalTime > 1000) { 2182 float fps = (float) mFpsNumFrames * 1000 / totalTime; 2183 Log.v(TAG, "0x" + thisHash + "\tFPS:\t" + fps); 2184 mFpsStartTime = nowTime; 2185 mFpsNumFrames = 0; 2186 } 2187 } 2188 } 2189 2190 private void performDraw() { 2191 if (!mAttachInfo.mScreenOn && !mReportNextDraw) { 2192 return; 2193 } 2194 2195 final boolean fullRedrawNeeded = mFullRedrawNeeded; 2196 mFullRedrawNeeded = false; 2197 2198 mIsDrawing = true; 2199 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "draw"); 2200 try { 2201 draw(fullRedrawNeeded); 2202 } finally { 2203 mIsDrawing = false; 2204 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2205 } 2206 2207 if (mReportNextDraw) { 2208 mReportNextDraw = false; 2209 2210 if (LOCAL_LOGV) { 2211 Log.v(TAG, "FINISHED DRAWING: " + mWindowAttributes.getTitle()); 2212 } 2213 if (mSurfaceHolder != null && mSurface.isValid()) { 2214 mSurfaceHolderCallback.surfaceRedrawNeeded(mSurfaceHolder); 2215 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 2216 if (callbacks != null) { 2217 for (SurfaceHolder.Callback c : callbacks) { 2218 if (c instanceof SurfaceHolder.Callback2) { 2219 ((SurfaceHolder.Callback2)c).surfaceRedrawNeeded( 2220 mSurfaceHolder); 2221 } 2222 } 2223 } 2224 } 2225 try { 2226 mWindowSession.finishDrawing(mWindow); 2227 } catch (RemoteException e) { 2228 } 2229 } 2230 } 2231 2232 private void draw(boolean fullRedrawNeeded) { 2233 Surface surface = mSurface; 2234 if (!surface.isValid()) { 2235 return; 2236 } 2237 2238 if (DEBUG_FPS) { 2239 trackFPS(); 2240 } 2241 2242 if (!sFirstDrawComplete) { 2243 synchronized (sFirstDrawHandlers) { 2244 sFirstDrawComplete = true; 2245 final int count = sFirstDrawHandlers.size(); 2246 for (int i = 0; i< count; i++) { 2247 mHandler.post(sFirstDrawHandlers.get(i)); 2248 } 2249 } 2250 } 2251 2252 scrollToRectOrFocus(null, false); 2253 2254 final AttachInfo attachInfo = mAttachInfo; 2255 if (attachInfo.mViewScrollChanged) { 2256 attachInfo.mViewScrollChanged = false; 2257 attachInfo.mTreeObserver.dispatchOnScrollChanged(); 2258 } 2259 2260 int yoff; 2261 boolean animating = mScroller != null && mScroller.computeScrollOffset(); 2262 if (animating) { 2263 yoff = mScroller.getCurrY(); 2264 } else { 2265 yoff = mScrollY; 2266 } 2267 if (mCurScrollY != yoff) { 2268 mCurScrollY = yoff; 2269 fullRedrawNeeded = true; 2270 } 2271 2272 final float appScale = attachInfo.mApplicationScale; 2273 final boolean scalingRequired = attachInfo.mScalingRequired; 2274 2275 int resizeAlpha = 0; 2276 if (mResizeBuffer != null) { 2277 long deltaTime = SystemClock.uptimeMillis() - mResizeBufferStartTime; 2278 if (deltaTime < mResizeBufferDuration) { 2279 float amt = deltaTime/(float) mResizeBufferDuration; 2280 amt = mResizeInterpolator.getInterpolation(amt); 2281 animating = true; 2282 resizeAlpha = 255 - (int)(amt*255); 2283 } else { 2284 disposeResizeBuffer(); 2285 } 2286 } 2287 2288 final Rect dirty = mDirty; 2289 if (mSurfaceHolder != null) { 2290 // The app owns the surface, we won't draw. 2291 dirty.setEmpty(); 2292 if (animating) { 2293 if (mScroller != null) { 2294 mScroller.abortAnimation(); 2295 } 2296 disposeResizeBuffer(); 2297 } 2298 return; 2299 } 2300 2301 if (fullRedrawNeeded) { 2302 attachInfo.mIgnoreDirtyState = true; 2303 dirty.set(0, 0, (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 2304 } 2305 2306 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2307 Log.v(TAG, "Draw " + mView + "/" 2308 + mWindowAttributes.getTitle() 2309 + ": dirty={" + dirty.left + "," + dirty.top 2310 + "," + dirty.right + "," + dirty.bottom + "} surface=" 2311 + surface + " surface.isValid()=" + surface.isValid() + ", appScale:" + 2312 appScale + ", width=" + mWidth + ", height=" + mHeight); 2313 } 2314 2315 invalidateDisplayLists(); 2316 2317 attachInfo.mTreeObserver.dispatchOnDraw(); 2318 2319 if (!dirty.isEmpty() || mIsAnimating) { 2320 if (attachInfo.mHardwareRenderer != null && attachInfo.mHardwareRenderer.isEnabled()) { 2321 // Draw with hardware renderer. 2322 mIsAnimating = false; 2323 mHardwareYOffset = yoff; 2324 mResizeAlpha = resizeAlpha; 2325 2326 mCurrentDirty.set(dirty); 2327 dirty.setEmpty(); 2328 2329 attachInfo.mHardwareRenderer.draw(mView, attachInfo, this, 2330 animating ? null : mCurrentDirty); 2331 } else { 2332 // If we get here with a disabled & requested hardware renderer, something went 2333 // wrong (an invalidate posted right before we destroyed the hardware surface 2334 // for instance) so we should just bail out. Locking the surface with software 2335 // rendering at this point would lock it forever and prevent hardware renderer 2336 // from doing its job when it comes back. 2337 // Before we request a new frame we must however attempt to reinitiliaze the 2338 // hardware renderer if it's in requested state. This would happen after an 2339 // eglTerminate() for instance. 2340 if (attachInfo.mHardwareRenderer != null && 2341 !attachInfo.mHardwareRenderer.isEnabled() && 2342 attachInfo.mHardwareRenderer.isRequested()) { 2343 2344 try { 2345 attachInfo.mHardwareRenderer.initializeIfNeeded(mWidth, mHeight, 2346 mHolder.getSurface()); 2347 } catch (Surface.OutOfResourcesException e) { 2348 handleOutOfResourcesException(e); 2349 return; 2350 } 2351 2352 mFullRedrawNeeded = true; 2353 scheduleTraversals(); 2354 return; 2355 } 2356 2357 if (!drawSoftware(surface, attachInfo, yoff, scalingRequired, dirty)) { 2358 return; 2359 } 2360 } 2361 } 2362 2363 if (animating) { 2364 mFullRedrawNeeded = true; 2365 scheduleTraversals(); 2366 } 2367 } 2368 2369 /** 2370 * @return true if drawing was succesfull, false if an error occurred 2371 */ 2372 private boolean drawSoftware(Surface surface, AttachInfo attachInfo, int yoff, 2373 boolean scalingRequired, Rect dirty) { 2374 2375 // Draw with software renderer. 2376 Canvas canvas; 2377 try { 2378 int left = dirty.left; 2379 int top = dirty.top; 2380 int right = dirty.right; 2381 int bottom = dirty.bottom; 2382 2383 canvas = mSurface.lockCanvas(dirty); 2384 2385 // The dirty rectangle can be modified by Surface.lockCanvas() 2386 //noinspection ConstantConditions 2387 if (left != dirty.left || top != dirty.top || right != dirty.right || 2388 bottom != dirty.bottom) { 2389 attachInfo.mIgnoreDirtyState = true; 2390 } 2391 2392 // TODO: Do this in native 2393 canvas.setDensity(mDensity); 2394 } catch (Surface.OutOfResourcesException e) { 2395 handleOutOfResourcesException(e); 2396 return false; 2397 } catch (IllegalArgumentException e) { 2398 Log.e(TAG, "Could not lock surface", e); 2399 // Don't assume this is due to out of memory, it could be 2400 // something else, and if it is something else then we could 2401 // kill stuff (or ourself) for no reason. 2402 mLayoutRequested = true; // ask wm for a new surface next time. 2403 return false; 2404 } 2405 2406 try { 2407 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2408 Log.v(TAG, "Surface " + surface + " drawing to bitmap w=" 2409 + canvas.getWidth() + ", h=" + canvas.getHeight()); 2410 //canvas.drawARGB(255, 255, 0, 0); 2411 } 2412 2413 // If this bitmap's format includes an alpha channel, we 2414 // need to clear it before drawing so that the child will 2415 // properly re-composite its drawing on a transparent 2416 // background. This automatically respects the clip/dirty region 2417 // or 2418 // If we are applying an offset, we need to clear the area 2419 // where the offset doesn't appear to avoid having garbage 2420 // left in the blank areas. 2421 if (!canvas.isOpaque() || yoff != 0) { 2422 canvas.drawColor(0, PorterDuff.Mode.CLEAR); 2423 } 2424 2425 dirty.setEmpty(); 2426 mIsAnimating = false; 2427 attachInfo.mDrawingTime = SystemClock.uptimeMillis(); 2428 mView.mPrivateFlags |= View.PFLAG_DRAWN; 2429 2430 if (DEBUG_DRAW) { 2431 Context cxt = mView.getContext(); 2432 Log.i(TAG, "Drawing: package:" + cxt.getPackageName() + 2433 ", metrics=" + cxt.getResources().getDisplayMetrics() + 2434 ", compatibilityInfo=" + cxt.getResources().getCompatibilityInfo()); 2435 } 2436 try { 2437 canvas.translate(0, -yoff); 2438 if (mTranslator != null) { 2439 mTranslator.translateCanvas(canvas); 2440 } 2441 canvas.setScreenDensity(scalingRequired ? mNoncompatDensity : 0); 2442 attachInfo.mSetIgnoreDirtyState = false; 2443 2444 mView.draw(canvas); 2445 2446 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2447 } finally { 2448 if (!attachInfo.mSetIgnoreDirtyState) { 2449 // Only clear the flag if it was not set during the mView.draw() call 2450 attachInfo.mIgnoreDirtyState = false; 2451 } 2452 } 2453 } finally { 2454 try { 2455 surface.unlockCanvasAndPost(canvas); 2456 } catch (IllegalArgumentException e) { 2457 Log.e(TAG, "Could not unlock surface", e); 2458 mLayoutRequested = true; // ask wm for a new surface next time. 2459 //noinspection ReturnInsideFinallyBlock 2460 return false; 2461 } 2462 2463 if (LOCAL_LOGV) { 2464 Log.v(TAG, "Surface " + surface + " unlockCanvasAndPost"); 2465 } 2466 } 2467 return true; 2468 } 2469 2470 /** 2471 * We want to draw a highlight around the current accessibility focused. 2472 * Since adding a style for all possible view is not a viable option we 2473 * have this specialized drawing method. 2474 * 2475 * Note: We are doing this here to be able to draw the highlight for 2476 * virtual views in addition to real ones. 2477 * 2478 * @param canvas The canvas on which to draw. 2479 */ 2480 private void drawAccessibilityFocusedDrawableIfNeeded(Canvas canvas) { 2481 AccessibilityManager manager = AccessibilityManager.getInstance(mView.mContext); 2482 if (!manager.isEnabled() || !manager.isTouchExplorationEnabled()) { 2483 return; 2484 } 2485 if (mAccessibilityFocusedHost == null || mAccessibilityFocusedHost.mAttachInfo == null) { 2486 return; 2487 } 2488 Drawable drawable = getAccessibilityFocusedDrawable(); 2489 if (drawable == null) { 2490 return; 2491 } 2492 AccessibilityNodeProvider provider = 2493 mAccessibilityFocusedHost.getAccessibilityNodeProvider(); 2494 Rect bounds = mView.mAttachInfo.mTmpInvalRect; 2495 if (provider == null) { 2496 mAccessibilityFocusedHost.getBoundsOnScreen(bounds); 2497 } else { 2498 if (mAccessibilityFocusedVirtualView == null) { 2499 return; 2500 } 2501 mAccessibilityFocusedVirtualView.getBoundsInScreen(bounds); 2502 } 2503 bounds.offset(-mAttachInfo.mWindowLeft, -mAttachInfo.mWindowTop); 2504 bounds.intersect(0, 0, mAttachInfo.mViewRootImpl.mWidth, mAttachInfo.mViewRootImpl.mHeight); 2505 drawable.setBounds(bounds); 2506 drawable.draw(canvas); 2507 } 2508 2509 private Drawable getAccessibilityFocusedDrawable() { 2510 if (mAttachInfo != null) { 2511 // Lazily load the accessibility focus drawable. 2512 if (mAttachInfo.mAccessibilityFocusDrawable == null) { 2513 TypedValue value = new TypedValue(); 2514 final boolean resolved = mView.mContext.getTheme().resolveAttribute( 2515 R.attr.accessibilityFocusedDrawable, value, true); 2516 if (resolved) { 2517 mAttachInfo.mAccessibilityFocusDrawable = 2518 mView.mContext.getResources().getDrawable(value.resourceId); 2519 } 2520 } 2521 return mAttachInfo.mAccessibilityFocusDrawable; 2522 } 2523 return null; 2524 } 2525 2526 void invalidateDisplayLists() { 2527 final ArrayList<DisplayList> displayLists = mDisplayLists; 2528 final int count = displayLists.size(); 2529 2530 for (int i = 0; i < count; i++) { 2531 final DisplayList displayList = displayLists.get(i); 2532 if (displayList.isDirty()) { 2533 displayList.clear(); 2534 } 2535 } 2536 2537 displayLists.clear(); 2538 } 2539 2540 /** 2541 * @hide 2542 */ 2543 public void setDrawDuringWindowsAnimating(boolean value) { 2544 mDrawDuringWindowsAnimating = value; 2545 if (value) { 2546 handleDispatchDoneAnimating(); 2547 } 2548 } 2549 2550 boolean scrollToRectOrFocus(Rect rectangle, boolean immediate) { 2551 final View.AttachInfo attachInfo = mAttachInfo; 2552 final Rect ci = attachInfo.mContentInsets; 2553 final Rect vi = attachInfo.mVisibleInsets; 2554 int scrollY = 0; 2555 boolean handled = false; 2556 2557 if (vi.left > ci.left || vi.top > ci.top 2558 || vi.right > ci.right || vi.bottom > ci.bottom) { 2559 // We'll assume that we aren't going to change the scroll 2560 // offset, since we want to avoid that unless it is actually 2561 // going to make the focus visible... otherwise we scroll 2562 // all over the place. 2563 scrollY = mScrollY; 2564 // We can be called for two different situations: during a draw, 2565 // to update the scroll position if the focus has changed (in which 2566 // case 'rectangle' is null), or in response to a 2567 // requestChildRectangleOnScreen() call (in which case 'rectangle' 2568 // is non-null and we just want to scroll to whatever that 2569 // rectangle is). 2570 final View focus = mView.findFocus(); 2571 if (focus == null) { 2572 return false; 2573 } 2574 View lastScrolledFocus = (mLastScrolledFocus != null) ? mLastScrolledFocus.get() : null; 2575 if (focus != lastScrolledFocus) { 2576 // If the focus has changed, then ignore any requests to scroll 2577 // to a rectangle; first we want to make sure the entire focus 2578 // view is visible. 2579 rectangle = null; 2580 } 2581 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Eval scroll: focus=" + focus 2582 + " rectangle=" + rectangle + " ci=" + ci 2583 + " vi=" + vi); 2584 if (focus == lastScrolledFocus && !mScrollMayChange && rectangle == null) { 2585 // Optimization: if the focus hasn't changed since last 2586 // time, and no layout has happened, then just leave things 2587 // as they are. 2588 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Keeping scroll y=" 2589 + mScrollY + " vi=" + vi.toShortString()); 2590 } else { 2591 // We need to determine if the currently focused view is 2592 // within the visible part of the window and, if not, apply 2593 // a pan so it can be seen. 2594 mLastScrolledFocus = new WeakReference<View>(focus); 2595 mScrollMayChange = false; 2596 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Need to scroll?"); 2597 // Try to find the rectangle from the focus view. 2598 if (focus.getGlobalVisibleRect(mVisRect, null)) { 2599 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Root w=" 2600 + mView.getWidth() + " h=" + mView.getHeight() 2601 + " ci=" + ci.toShortString() 2602 + " vi=" + vi.toShortString()); 2603 if (rectangle == null) { 2604 focus.getFocusedRect(mTempRect); 2605 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Focus " + focus 2606 + ": focusRect=" + mTempRect.toShortString()); 2607 if (mView instanceof ViewGroup) { 2608 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 2609 focus, mTempRect); 2610 } 2611 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2612 "Focus in window: focusRect=" 2613 + mTempRect.toShortString() 2614 + " visRect=" + mVisRect.toShortString()); 2615 } else { 2616 mTempRect.set(rectangle); 2617 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2618 "Request scroll to rect: " 2619 + mTempRect.toShortString() 2620 + " visRect=" + mVisRect.toShortString()); 2621 } 2622 if (mTempRect.intersect(mVisRect)) { 2623 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2624 "Focus window visible rect: " 2625 + mTempRect.toShortString()); 2626 if (mTempRect.height() > 2627 (mView.getHeight()-vi.top-vi.bottom)) { 2628 // If the focus simply is not going to fit, then 2629 // best is probably just to leave things as-is. 2630 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2631 "Too tall; leaving scrollY=" + scrollY); 2632 } else if ((mTempRect.top-scrollY) < vi.top) { 2633 scrollY -= vi.top - (mTempRect.top-scrollY); 2634 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2635 "Top covered; scrollY=" + scrollY); 2636 } else if ((mTempRect.bottom-scrollY) 2637 > (mView.getHeight()-vi.bottom)) { 2638 scrollY += (mTempRect.bottom-scrollY) 2639 - (mView.getHeight()-vi.bottom); 2640 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2641 "Bottom covered; scrollY=" + scrollY); 2642 } 2643 handled = true; 2644 } 2645 } 2646 } 2647 } 2648 2649 if (scrollY != mScrollY) { 2650 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Pan scroll changed: old=" 2651 + mScrollY + " , new=" + scrollY); 2652 if (!immediate && mResizeBuffer == null) { 2653 if (mScroller == null) { 2654 mScroller = new Scroller(mView.getContext()); 2655 } 2656 mScroller.startScroll(0, mScrollY, 0, scrollY-mScrollY); 2657 } else if (mScroller != null) { 2658 mScroller.abortAnimation(); 2659 } 2660 mScrollY = scrollY; 2661 } 2662 2663 return handled; 2664 } 2665 2666 /** 2667 * @hide 2668 */ 2669 public View getAccessibilityFocusedHost() { 2670 return mAccessibilityFocusedHost; 2671 } 2672 2673 /** 2674 * @hide 2675 */ 2676 public AccessibilityNodeInfo getAccessibilityFocusedVirtualView() { 2677 return mAccessibilityFocusedVirtualView; 2678 } 2679 2680 void setAccessibilityFocus(View view, AccessibilityNodeInfo node) { 2681 // If we have a virtual view with accessibility focus we need 2682 // to clear the focus and invalidate the virtual view bounds. 2683 if (mAccessibilityFocusedVirtualView != null) { 2684 2685 AccessibilityNodeInfo focusNode = mAccessibilityFocusedVirtualView; 2686 View focusHost = mAccessibilityFocusedHost; 2687 2688 // Wipe the state of the current accessibility focus since 2689 // the call into the provider to clear accessibility focus 2690 // will fire an accessibility event which will end up calling 2691 // this method and we want to have clean state when this 2692 // invocation happens. 2693 mAccessibilityFocusedHost = null; 2694 mAccessibilityFocusedVirtualView = null; 2695 2696 // Clear accessibility focus on the host after clearing state since 2697 // this method may be reentrant. 2698 focusHost.clearAccessibilityFocusNoCallbacks(); 2699 2700 AccessibilityNodeProvider provider = focusHost.getAccessibilityNodeProvider(); 2701 if (provider != null) { 2702 // Invalidate the area of the cleared accessibility focus. 2703 focusNode.getBoundsInParent(mTempRect); 2704 focusHost.invalidate(mTempRect); 2705 // Clear accessibility focus in the virtual node. 2706 final int virtualNodeId = AccessibilityNodeInfo.getVirtualDescendantId( 2707 focusNode.getSourceNodeId()); 2708 provider.performAction(virtualNodeId, 2709 AccessibilityNodeInfo.ACTION_CLEAR_ACCESSIBILITY_FOCUS, null); 2710 } 2711 focusNode.recycle(); 2712 } 2713 if (mAccessibilityFocusedHost != null) { 2714 // Clear accessibility focus in the view. 2715 mAccessibilityFocusedHost.clearAccessibilityFocusNoCallbacks(); 2716 } 2717 2718 // Set the new focus host and node. 2719 mAccessibilityFocusedHost = view; 2720 mAccessibilityFocusedVirtualView = node; 2721 } 2722 2723 public void requestChildFocus(View child, View focused) { 2724 if (DEBUG_INPUT_RESIZE) { 2725 Log.v(TAG, "Request child focus: focus now " + focused); 2726 } 2727 checkThread(); 2728 scheduleTraversals(); 2729 } 2730 2731 public void clearChildFocus(View child) { 2732 if (DEBUG_INPUT_RESIZE) { 2733 Log.v(TAG, "Clearing child focus"); 2734 } 2735 checkThread(); 2736 scheduleTraversals(); 2737 } 2738 2739 @Override 2740 public ViewParent getParentForAccessibility() { 2741 return null; 2742 } 2743 2744 public void focusableViewAvailable(View v) { 2745 checkThread(); 2746 if (mView != null) { 2747 if (!mView.hasFocus()) { 2748 v.requestFocus(); 2749 } else { 2750 // the one case where will transfer focus away from the current one 2751 // is if the current view is a view group that prefers to give focus 2752 // to its children first AND the view is a descendant of it. 2753 View focused = mView.findFocus(); 2754 if (focused instanceof ViewGroup) { 2755 ViewGroup group = (ViewGroup) focused; 2756 if (group.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 2757 && isViewDescendantOf(v, focused)) { 2758 v.requestFocus(); 2759 } 2760 } 2761 } 2762 } 2763 } 2764 2765 public void recomputeViewAttributes(View child) { 2766 checkThread(); 2767 if (mView == child) { 2768 mAttachInfo.mRecomputeGlobalAttributes = true; 2769 if (!mWillDrawSoon) { 2770 scheduleTraversals(); 2771 } 2772 } 2773 } 2774 2775 void dispatchDetachedFromWindow() { 2776 if (mView != null && mView.mAttachInfo != null) { 2777 if (mAttachInfo.mHardwareRenderer != null && 2778 mAttachInfo.mHardwareRenderer.isEnabled()) { 2779 mAttachInfo.mHardwareRenderer.validate(); 2780 } 2781 mAttachInfo.mTreeObserver.dispatchOnWindowAttachedChange(false); 2782 mView.dispatchDetachedFromWindow(); 2783 } 2784 2785 mAccessibilityInteractionConnectionManager.ensureNoConnection(); 2786 mAccessibilityManager.removeAccessibilityStateChangeListener( 2787 mAccessibilityInteractionConnectionManager); 2788 removeSendWindowContentChangedCallback(); 2789 2790 destroyHardwareRenderer(); 2791 2792 setAccessibilityFocus(null, null); 2793 2794 mView = null; 2795 mAttachInfo.mRootView = null; 2796 mAttachInfo.mSurface = null; 2797 2798 mSurface.release(); 2799 2800 if (mInputQueueCallback != null && mInputQueue != null) { 2801 mInputQueueCallback.onInputQueueDestroyed(mInputQueue); 2802 mInputQueue.dispose(); 2803 mInputQueueCallback = null; 2804 mInputQueue = null; 2805 } 2806 if (mInputEventReceiver != null) { 2807 mInputEventReceiver.dispose(); 2808 mInputEventReceiver = null; 2809 } 2810 try { 2811 mWindowSession.remove(mWindow); 2812 } catch (RemoteException e) { 2813 } 2814 2815 // Dispose the input channel after removing the window so the Window Manager 2816 // doesn't interpret the input channel being closed as an abnormal termination. 2817 if (mInputChannel != null) { 2818 mInputChannel.dispose(); 2819 mInputChannel = null; 2820 } 2821 2822 unscheduleTraversals(); 2823 } 2824 2825 void updateConfiguration(Configuration config, boolean force) { 2826 if (DEBUG_CONFIGURATION) Log.v(TAG, 2827 "Applying new config to window " 2828 + mWindowAttributes.getTitle() 2829 + ": " + config); 2830 2831 CompatibilityInfo ci = mCompatibilityInfo.getIfNeeded(); 2832 if (ci != null) { 2833 config = new Configuration(config); 2834 ci.applyToConfiguration(mNoncompatDensity, config); 2835 } 2836 2837 synchronized (sConfigCallbacks) { 2838 for (int i=sConfigCallbacks.size()-1; i>=0; i--) { 2839 sConfigCallbacks.get(i).onConfigurationChanged(config); 2840 } 2841 } 2842 if (mView != null) { 2843 // At this point the resources have been updated to 2844 // have the most recent config, whatever that is. Use 2845 // the one in them which may be newer. 2846 config = mView.getResources().getConfiguration(); 2847 if (force || mLastConfiguration.diff(config) != 0) { 2848 final int lastLayoutDirection = mLastConfiguration.getLayoutDirection(); 2849 final int currentLayoutDirection = config.getLayoutDirection(); 2850 mLastConfiguration.setTo(config); 2851 if (lastLayoutDirection != currentLayoutDirection && 2852 mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 2853 mView.setLayoutDirection(currentLayoutDirection); 2854 } 2855 mView.dispatchConfigurationChanged(config); 2856 } 2857 } 2858 } 2859 2860 /** 2861 * Return true if child is an ancestor of parent, (or equal to the parent). 2862 */ 2863 public static boolean isViewDescendantOf(View child, View parent) { 2864 if (child == parent) { 2865 return true; 2866 } 2867 2868 final ViewParent theParent = child.getParent(); 2869 return (theParent instanceof ViewGroup) && isViewDescendantOf((View) theParent, parent); 2870 } 2871 2872 private static void forceLayout(View view) { 2873 view.forceLayout(); 2874 if (view instanceof ViewGroup) { 2875 ViewGroup group = (ViewGroup) view; 2876 final int count = group.getChildCount(); 2877 for (int i = 0; i < count; i++) { 2878 forceLayout(group.getChildAt(i)); 2879 } 2880 } 2881 } 2882 2883 private final static int MSG_INVALIDATE = 1; 2884 private final static int MSG_INVALIDATE_RECT = 2; 2885 private final static int MSG_DIE = 3; 2886 private final static int MSG_RESIZED = 4; 2887 private final static int MSG_RESIZED_REPORT = 5; 2888 private final static int MSG_WINDOW_FOCUS_CHANGED = 6; 2889 private final static int MSG_DISPATCH_KEY = 7; 2890 private final static int MSG_DISPATCH_APP_VISIBILITY = 8; 2891 private final static int MSG_DISPATCH_GET_NEW_SURFACE = 9; 2892 private final static int MSG_DISPATCH_KEY_FROM_IME = 11; 2893 private final static int MSG_FINISH_INPUT_CONNECTION = 12; 2894 private final static int MSG_CHECK_FOCUS = 13; 2895 private final static int MSG_CLOSE_SYSTEM_DIALOGS = 14; 2896 private final static int MSG_DISPATCH_DRAG_EVENT = 15; 2897 private final static int MSG_DISPATCH_DRAG_LOCATION_EVENT = 16; 2898 private final static int MSG_DISPATCH_SYSTEM_UI_VISIBILITY = 17; 2899 private final static int MSG_UPDATE_CONFIGURATION = 18; 2900 private final static int MSG_PROCESS_INPUT_EVENTS = 19; 2901 private final static int MSG_DISPATCH_SCREEN_STATE = 20; 2902 private final static int MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST = 21; 2903 private final static int MSG_DISPATCH_DONE_ANIMATING = 22; 2904 private final static int MSG_INVALIDATE_WORLD = 23; 2905 private final static int MSG_WINDOW_MOVED = 24; 2906 2907 final class ViewRootHandler extends Handler { 2908 @Override 2909 public String getMessageName(Message message) { 2910 switch (message.what) { 2911 case MSG_INVALIDATE: 2912 return "MSG_INVALIDATE"; 2913 case MSG_INVALIDATE_RECT: 2914 return "MSG_INVALIDATE_RECT"; 2915 case MSG_DIE: 2916 return "MSG_DIE"; 2917 case MSG_RESIZED: 2918 return "MSG_RESIZED"; 2919 case MSG_RESIZED_REPORT: 2920 return "MSG_RESIZED_REPORT"; 2921 case MSG_WINDOW_FOCUS_CHANGED: 2922 return "MSG_WINDOW_FOCUS_CHANGED"; 2923 case MSG_DISPATCH_KEY: 2924 return "MSG_DISPATCH_KEY"; 2925 case MSG_DISPATCH_APP_VISIBILITY: 2926 return "MSG_DISPATCH_APP_VISIBILITY"; 2927 case MSG_DISPATCH_GET_NEW_SURFACE: 2928 return "MSG_DISPATCH_GET_NEW_SURFACE"; 2929 case MSG_DISPATCH_KEY_FROM_IME: 2930 return "MSG_DISPATCH_KEY_FROM_IME"; 2931 case MSG_FINISH_INPUT_CONNECTION: 2932 return "MSG_FINISH_INPUT_CONNECTION"; 2933 case MSG_CHECK_FOCUS: 2934 return "MSG_CHECK_FOCUS"; 2935 case MSG_CLOSE_SYSTEM_DIALOGS: 2936 return "MSG_CLOSE_SYSTEM_DIALOGS"; 2937 case MSG_DISPATCH_DRAG_EVENT: 2938 return "MSG_DISPATCH_DRAG_EVENT"; 2939 case MSG_DISPATCH_DRAG_LOCATION_EVENT: 2940 return "MSG_DISPATCH_DRAG_LOCATION_EVENT"; 2941 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: 2942 return "MSG_DISPATCH_SYSTEM_UI_VISIBILITY"; 2943 case MSG_UPDATE_CONFIGURATION: 2944 return "MSG_UPDATE_CONFIGURATION"; 2945 case MSG_PROCESS_INPUT_EVENTS: 2946 return "MSG_PROCESS_INPUT_EVENTS"; 2947 case MSG_DISPATCH_SCREEN_STATE: 2948 return "MSG_DISPATCH_SCREEN_STATE"; 2949 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: 2950 return "MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST"; 2951 case MSG_DISPATCH_DONE_ANIMATING: 2952 return "MSG_DISPATCH_DONE_ANIMATING"; 2953 case MSG_WINDOW_MOVED: 2954 return "MSG_WINDOW_MOVED"; 2955 } 2956 return super.getMessageName(message); 2957 } 2958 2959 @Override 2960 public void handleMessage(Message msg) { 2961 switch (msg.what) { 2962 case MSG_INVALIDATE: 2963 ((View) msg.obj).invalidate(); 2964 break; 2965 case MSG_INVALIDATE_RECT: 2966 final View.AttachInfo.InvalidateInfo info = (View.AttachInfo.InvalidateInfo) msg.obj; 2967 info.target.invalidate(info.left, info.top, info.right, info.bottom); 2968 info.recycle(); 2969 break; 2970 case MSG_PROCESS_INPUT_EVENTS: 2971 mProcessInputEventsScheduled = false; 2972 doProcessInputEvents(); 2973 break; 2974 case MSG_DISPATCH_APP_VISIBILITY: 2975 handleAppVisibility(msg.arg1 != 0); 2976 break; 2977 case MSG_DISPATCH_GET_NEW_SURFACE: 2978 handleGetNewSurface(); 2979 break; 2980 case MSG_RESIZED: { 2981 // Recycled in the fall through... 2982 SomeArgs args = (SomeArgs) msg.obj; 2983 if (mWinFrame.equals(args.arg1) 2984 && mPendingOverscanInsets.equals(args.arg5) 2985 && mPendingContentInsets.equals(args.arg2) 2986 && mPendingVisibleInsets.equals(args.arg3) 2987 && args.arg4 == null) { 2988 break; 2989 } 2990 } // fall through... 2991 case MSG_RESIZED_REPORT: 2992 if (mAdded) { 2993 SomeArgs args = (SomeArgs) msg.obj; 2994 2995 Configuration config = (Configuration) args.arg4; 2996 if (config != null) { 2997 updateConfiguration(config, false); 2998 } 2999 3000 mWinFrame.set((Rect) args.arg1); 3001 mPendingOverscanInsets.set((Rect) args.arg5); 3002 mPendingContentInsets.set((Rect) args.arg2); 3003 mPendingVisibleInsets.set((Rect) args.arg3); 3004 3005 args.recycle(); 3006 3007 if (msg.what == MSG_RESIZED_REPORT) { 3008 mReportNextDraw = true; 3009 } 3010 3011 if (mView != null) { 3012 forceLayout(mView); 3013 } 3014 3015 requestLayout(); 3016 } 3017 break; 3018 case MSG_WINDOW_MOVED: 3019 if (mAdded) { 3020 final int w = mWinFrame.width(); 3021 final int h = mWinFrame.height(); 3022 final int l = msg.arg1; 3023 final int t = msg.arg2; 3024 mWinFrame.left = l; 3025 mWinFrame.right = l + w; 3026 mWinFrame.top = t; 3027 mWinFrame.bottom = t + h; 3028 3029 if (mView != null) { 3030 forceLayout(mView); 3031 } 3032 requestLayout(); 3033 } 3034 break; 3035 case MSG_WINDOW_FOCUS_CHANGED: { 3036 if (mAdded) { 3037 boolean hasWindowFocus = msg.arg1 != 0; 3038 mAttachInfo.mHasWindowFocus = hasWindowFocus; 3039 3040 profileRendering(hasWindowFocus); 3041 3042 if (hasWindowFocus) { 3043 boolean inTouchMode = msg.arg2 != 0; 3044 ensureTouchModeLocally(inTouchMode); 3045 3046 if (mAttachInfo.mHardwareRenderer != null && mSurface.isValid()){ 3047 mFullRedrawNeeded = true; 3048 try { 3049 mAttachInfo.mHardwareRenderer.initializeIfNeeded( 3050 mWidth, mHeight, mHolder.getSurface()); 3051 } catch (Surface.OutOfResourcesException e) { 3052 Log.e(TAG, "OutOfResourcesException locking surface", e); 3053 try { 3054 if (!mWindowSession.outOfMemory(mWindow)) { 3055 Slog.w(TAG, "No processes killed for memory; killing self"); 3056 Process.killProcess(Process.myPid()); 3057 } 3058 } catch (RemoteException ex) { 3059 } 3060 // Retry in a bit. 3061 sendMessageDelayed(obtainMessage(msg.what, msg.arg1, msg.arg2), 500); 3062 return; 3063 } 3064 } 3065 } 3066 3067 mLastWasImTarget = WindowManager.LayoutParams 3068 .mayUseInputMethod(mWindowAttributes.flags); 3069 3070 InputMethodManager imm = InputMethodManager.peekInstance(); 3071 if (mView != null) { 3072 if (hasWindowFocus && imm != null && mLastWasImTarget) { 3073 imm.startGettingWindowFocus(mView); 3074 } 3075 mAttachInfo.mKeyDispatchState.reset(); 3076 mView.dispatchWindowFocusChanged(hasWindowFocus); 3077 mAttachInfo.mTreeObserver.dispatchOnWindowFocusChange(hasWindowFocus); 3078 } 3079 3080 // Note: must be done after the focus change callbacks, 3081 // so all of the view state is set up correctly. 3082 if (hasWindowFocus) { 3083 if (imm != null && mLastWasImTarget) { 3084 imm.onWindowFocus(mView, mView.findFocus(), 3085 mWindowAttributes.softInputMode, 3086 !mHasHadWindowFocus, mWindowAttributes.flags); 3087 } 3088 // Clear the forward bit. We can just do this directly, since 3089 // the window manager doesn't care about it. 3090 mWindowAttributes.softInputMode &= 3091 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3092 ((WindowManager.LayoutParams)mView.getLayoutParams()) 3093 .softInputMode &= 3094 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3095 mHasHadWindowFocus = true; 3096 } 3097 3098 setAccessibilityFocus(null, null); 3099 3100 if (mView != null && mAccessibilityManager.isEnabled()) { 3101 if (hasWindowFocus) { 3102 mView.sendAccessibilityEvent( 3103 AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 3104 } 3105 } 3106 } 3107 } break; 3108 case MSG_DIE: 3109 doDie(); 3110 break; 3111 case MSG_DISPATCH_KEY: { 3112 KeyEvent event = (KeyEvent)msg.obj; 3113 enqueueInputEvent(event, null, 0, true); 3114 } break; 3115 case MSG_DISPATCH_KEY_FROM_IME: { 3116 if (LOCAL_LOGV) Log.v( 3117 TAG, "Dispatching key " 3118 + msg.obj + " from IME to " + mView); 3119 KeyEvent event = (KeyEvent)msg.obj; 3120 if ((event.getFlags()&KeyEvent.FLAG_FROM_SYSTEM) != 0) { 3121 // The IME is trying to say this event is from the 3122 // system! Bad bad bad! 3123 //noinspection UnusedAssignment 3124 event = KeyEvent.changeFlags(event, event.getFlags() & ~KeyEvent.FLAG_FROM_SYSTEM); 3125 } 3126 enqueueInputEvent(event, null, QueuedInputEvent.FLAG_DELIVER_POST_IME, true); 3127 } break; 3128 case MSG_FINISH_INPUT_CONNECTION: { 3129 InputMethodManager imm = InputMethodManager.peekInstance(); 3130 if (imm != null) { 3131 imm.reportFinishInputConnection((InputConnection)msg.obj); 3132 } 3133 } break; 3134 case MSG_CHECK_FOCUS: { 3135 InputMethodManager imm = InputMethodManager.peekInstance(); 3136 if (imm != null) { 3137 imm.checkFocus(); 3138 } 3139 } break; 3140 case MSG_CLOSE_SYSTEM_DIALOGS: { 3141 if (mView != null) { 3142 mView.onCloseSystemDialogs((String)msg.obj); 3143 } 3144 } break; 3145 case MSG_DISPATCH_DRAG_EVENT: 3146 case MSG_DISPATCH_DRAG_LOCATION_EVENT: { 3147 DragEvent event = (DragEvent)msg.obj; 3148 event.mLocalState = mLocalDragState; // only present when this app called startDrag() 3149 handleDragEvent(event); 3150 } break; 3151 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: { 3152 handleDispatchSystemUiVisibilityChanged((SystemUiVisibilityInfo) msg.obj); 3153 } break; 3154 case MSG_UPDATE_CONFIGURATION: { 3155 Configuration config = (Configuration)msg.obj; 3156 if (config.isOtherSeqNewer(mLastConfiguration)) { 3157 config = mLastConfiguration; 3158 } 3159 updateConfiguration(config, false); 3160 } break; 3161 case MSG_DISPATCH_SCREEN_STATE: { 3162 if (mView != null) { 3163 handleScreenStateChange(msg.arg1 == 1); 3164 } 3165 } break; 3166 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: { 3167 setAccessibilityFocus(null, null); 3168 } break; 3169 case MSG_DISPATCH_DONE_ANIMATING: { 3170 handleDispatchDoneAnimating(); 3171 } break; 3172 case MSG_INVALIDATE_WORLD: { 3173 if (mView != null) { 3174 invalidateWorld(mView); 3175 } 3176 } break; 3177 } 3178 } 3179 } 3180 3181 final ViewRootHandler mHandler = new ViewRootHandler(); 3182 3183 /** 3184 * Something in the current window tells us we need to change the touch mode. For 3185 * example, we are not in touch mode, and the user touches the screen. 3186 * 3187 * If the touch mode has changed, tell the window manager, and handle it locally. 3188 * 3189 * @param inTouchMode Whether we want to be in touch mode. 3190 * @return True if the touch mode changed and focus changed was changed as a result 3191 */ 3192 boolean ensureTouchMode(boolean inTouchMode) { 3193 if (DBG) Log.d("touchmode", "ensureTouchMode(" + inTouchMode + "), current " 3194 + "touch mode is " + mAttachInfo.mInTouchMode); 3195 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3196 3197 // tell the window manager 3198 try { 3199 mWindowSession.setInTouchMode(inTouchMode); 3200 } catch (RemoteException e) { 3201 throw new RuntimeException(e); 3202 } 3203 3204 // handle the change 3205 return ensureTouchModeLocally(inTouchMode); 3206 } 3207 3208 /** 3209 * Ensure that the touch mode for this window is set, and if it is changing, 3210 * take the appropriate action. 3211 * @param inTouchMode Whether we want to be in touch mode. 3212 * @return True if the touch mode changed and focus changed was changed as a result 3213 */ 3214 private boolean ensureTouchModeLocally(boolean inTouchMode) { 3215 if (DBG) Log.d("touchmode", "ensureTouchModeLocally(" + inTouchMode + "), current " 3216 + "touch mode is " + mAttachInfo.mInTouchMode); 3217 3218 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3219 3220 mAttachInfo.mInTouchMode = inTouchMode; 3221 mAttachInfo.mTreeObserver.dispatchOnTouchModeChanged(inTouchMode); 3222 3223 return (inTouchMode) ? enterTouchMode() : leaveTouchMode(); 3224 } 3225 3226 private boolean enterTouchMode() { 3227 if (mView != null) { 3228 if (mView.hasFocus()) { 3229 // note: not relying on mFocusedView here because this could 3230 // be when the window is first being added, and mFocused isn't 3231 // set yet. 3232 final View focused = mView.findFocus(); 3233 if (focused != null && !focused.isFocusableInTouchMode()) { 3234 final ViewGroup ancestorToTakeFocus = 3235 findAncestorToTakeFocusInTouchMode(focused); 3236 if (ancestorToTakeFocus != null) { 3237 // there is an ancestor that wants focus after its descendants that 3238 // is focusable in touch mode.. give it focus 3239 return ancestorToTakeFocus.requestFocus(); 3240 } else { 3241 // nothing appropriate to have focus in touch mode, clear it out 3242 focused.unFocus(); 3243 return true; 3244 } 3245 } 3246 } 3247 } 3248 return false; 3249 } 3250 3251 /** 3252 * Find an ancestor of focused that wants focus after its descendants and is 3253 * focusable in touch mode. 3254 * @param focused The currently focused view. 3255 * @return An appropriate view, or null if no such view exists. 3256 */ 3257 private static ViewGroup findAncestorToTakeFocusInTouchMode(View focused) { 3258 ViewParent parent = focused.getParent(); 3259 while (parent instanceof ViewGroup) { 3260 final ViewGroup vgParent = (ViewGroup) parent; 3261 if (vgParent.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 3262 && vgParent.isFocusableInTouchMode()) { 3263 return vgParent; 3264 } 3265 if (vgParent.isRootNamespace()) { 3266 return null; 3267 } else { 3268 parent = vgParent.getParent(); 3269 } 3270 } 3271 return null; 3272 } 3273 3274 private boolean leaveTouchMode() { 3275 if (mView != null) { 3276 if (mView.hasFocus()) { 3277 View focusedView = mView.findFocus(); 3278 if (!(focusedView instanceof ViewGroup)) { 3279 // some view has focus, let it keep it 3280 return false; 3281 } else if (((ViewGroup) focusedView).getDescendantFocusability() != 3282 ViewGroup.FOCUS_AFTER_DESCENDANTS) { 3283 // some view group has focus, and doesn't prefer its children 3284 // over itself for focus, so let them keep it. 3285 return false; 3286 } 3287 } 3288 3289 // find the best view to give focus to in this brave new non-touch-mode 3290 // world 3291 final View focused = focusSearch(null, View.FOCUS_DOWN); 3292 if (focused != null) { 3293 return focused.requestFocus(View.FOCUS_DOWN); 3294 } 3295 } 3296 return false; 3297 } 3298 3299 /** 3300 * Base class for implementing a stage in the chain of responsibility 3301 * for processing input events. 3302 * <p> 3303 * Events are delivered to the stage by the {@link #deliver} method. The stage 3304 * then has the choice of finishing the event or forwarding it to the next stage. 3305 * </p> 3306 */ 3307 abstract class InputStage { 3308 private final InputStage mNext; 3309 3310 protected static final int FORWARD = 0; 3311 protected static final int FINISH_HANDLED = 1; 3312 protected static final int FINISH_NOT_HANDLED = 2; 3313 3314 /** 3315 * Creates an input stage. 3316 * @param next The next stage to which events should be forwarded. 3317 */ 3318 public InputStage(InputStage next) { 3319 mNext = next; 3320 } 3321 3322 /** 3323 * Delivers an event to be processed. 3324 */ 3325 public final void deliver(QueuedInputEvent q) { 3326 if ((q.mFlags & QueuedInputEvent.FLAG_FINISHED) != 0) { 3327 forward(q); 3328 } else if (mView == null || !mAdded) { 3329 Slog.w(TAG, "Dropping event due to root view being removed: " + q.mEvent); 3330 finish(q, false); 3331 } else if (!mAttachInfo.mHasWindowFocus && 3332 !q.mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER) && 3333 !isTerminalInputEvent(q.mEvent)) { 3334 // If this is a focused event and the window doesn't currently have input focus, 3335 // then drop this event. This could be an event that came back from the previous 3336 // stage but the window has lost focus in the meantime. 3337 Slog.w(TAG, "Dropping event due to no window focus: " + q.mEvent); 3338 finish(q, false); 3339 } else { 3340 apply(q, onProcess(q)); 3341 } 3342 } 3343 3344 /** 3345 * Marks the the input event as finished then forwards it to the next stage. 3346 */ 3347 protected void finish(QueuedInputEvent q, boolean handled) { 3348 q.mFlags |= QueuedInputEvent.FLAG_FINISHED; 3349 if (handled) { 3350 q.mFlags |= QueuedInputEvent.FLAG_FINISHED_HANDLED; 3351 } 3352 forward(q); 3353 } 3354 3355 /** 3356 * Forwards the event to the next stage. 3357 */ 3358 protected void forward(QueuedInputEvent q) { 3359 onDeliverToNext(q); 3360 } 3361 3362 /** 3363 * Applies a result code from {@link #onProcess} to the specified event. 3364 */ 3365 protected void apply(QueuedInputEvent q, int result) { 3366 if (result == FORWARD) { 3367 forward(q); 3368 } else if (result == FINISH_HANDLED) { 3369 finish(q, true); 3370 } else if (result == FINISH_NOT_HANDLED) { 3371 finish(q, false); 3372 } else { 3373 throw new IllegalArgumentException("Invalid result: " + result); 3374 } 3375 } 3376 3377 /** 3378 * Called when an event is ready to be processed. 3379 * @return A result code indicating how the event was handled. 3380 */ 3381 protected int onProcess(QueuedInputEvent q) { 3382 return FORWARD; 3383 } 3384 3385 /** 3386 * Called when an event is being delivered to the next stage. 3387 */ 3388 protected void onDeliverToNext(QueuedInputEvent q) { 3389 if (mNext != null) { 3390 mNext.deliver(q); 3391 } else { 3392 finishInputEvent(q); 3393 } 3394 } 3395 } 3396 3397 /** 3398 * Base class for implementing an input pipeline stage that supports 3399 * asynchronous and out-of-order processing of input events. 3400 * <p> 3401 * In addition to what a normal input stage can do, an asynchronous 3402 * input stage may also defer an input event that has been delivered to it 3403 * and finish or forward it later. 3404 * </p> 3405 */ 3406 abstract class AsyncInputStage extends InputStage { 3407 private final String mTraceCounter; 3408 3409 private QueuedInputEvent mQueueHead; 3410 private QueuedInputEvent mQueueTail; 3411 private int mQueueLength; 3412 3413 protected static final int DEFER = 3; 3414 3415 /** 3416 * Creates an asynchronous input stage. 3417 * @param next The next stage to which events should be forwarded. 3418 * @param traceCounter The name of a counter to record the size of 3419 * the queue of pending events. 3420 */ 3421 public AsyncInputStage(InputStage next, String traceCounter) { 3422 super(next); 3423 mTraceCounter = traceCounter; 3424 } 3425 3426 /** 3427 * Marks the event as deferred, which is to say that it will be handled 3428 * asynchronously. The caller is responsible for calling {@link #forward} 3429 * or {@link #finish} later when it is done handling the event. 3430 */ 3431 protected void defer(QueuedInputEvent q) { 3432 q.mFlags |= QueuedInputEvent.FLAG_DEFERRED; 3433 enqueue(q); 3434 } 3435 3436 @Override 3437 protected void forward(QueuedInputEvent q) { 3438 // Clear the deferred flag. 3439 q.mFlags &= ~QueuedInputEvent.FLAG_DEFERRED; 3440 3441 // Fast path if the queue is empty. 3442 QueuedInputEvent curr = mQueueHead; 3443 if (curr == null) { 3444 super.forward(q); 3445 return; 3446 } 3447 3448 // Determine whether the event must be serialized behind any others 3449 // before it can be delivered to the next stage. This is done because 3450 // deferred events might be handled out of order by the stage. 3451 final int deviceId = q.mEvent.getDeviceId(); 3452 QueuedInputEvent prev = null; 3453 boolean blocked = false; 3454 while (curr != null && curr != q) { 3455 if (!blocked && deviceId == curr.mEvent.getDeviceId()) { 3456 blocked = true; 3457 } 3458 prev = curr; 3459 curr = curr.mNext; 3460 } 3461 3462 // If the event is blocked, then leave it in the queue to be delivered later. 3463 // Note that the event might not yet be in the queue if it was not previously 3464 // deferred so we will enqueue it if needed. 3465 if (blocked) { 3466 if (curr == null) { 3467 enqueue(q); 3468 } 3469 return; 3470 } 3471 3472 // The event is not blocked. Deliver it immediately. 3473 if (curr != null) { 3474 curr = curr.mNext; 3475 dequeue(q, prev); 3476 } 3477 super.forward(q); 3478 3479 // Dequeuing this event may have unblocked successors. Deliver them. 3480 while (curr != null) { 3481 if (deviceId == curr.mEvent.getDeviceId()) { 3482 if ((curr.mFlags & QueuedInputEvent.FLAG_DEFERRED) != 0) { 3483 break; 3484 } 3485 QueuedInputEvent next = curr.mNext; 3486 dequeue(curr, prev); 3487 super.forward(curr); 3488 curr = next; 3489 } else { 3490 prev = curr; 3491 curr = curr.mNext; 3492 } 3493 } 3494 } 3495 3496 @Override 3497 protected void apply(QueuedInputEvent q, int result) { 3498 if (result == DEFER) { 3499 defer(q); 3500 } else { 3501 super.apply(q, result); 3502 } 3503 } 3504 3505 private void enqueue(QueuedInputEvent q) { 3506 if (mQueueTail == null) { 3507 mQueueHead = q; 3508 mQueueTail = q; 3509 } else { 3510 mQueueTail.mNext = q; 3511 mQueueTail = q; 3512 } 3513 3514 mQueueLength += 1; 3515 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 3516 } 3517 3518 private void dequeue(QueuedInputEvent q, QueuedInputEvent prev) { 3519 if (prev == null) { 3520 mQueueHead = q.mNext; 3521 } else { 3522 prev.mNext = q.mNext; 3523 } 3524 if (mQueueTail == q) { 3525 mQueueTail = prev; 3526 } 3527 q.mNext = null; 3528 3529 mQueueLength -= 1; 3530 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 3531 } 3532 } 3533 3534 /** 3535 * Delivers pre-ime input events to a native activity. 3536 * Does not support pointer events. 3537 */ 3538 final class NativePreImeInputStage extends AsyncInputStage 3539 implements InputQueue.FinishedInputEventCallback { 3540 public NativePreImeInputStage(InputStage next, String traceCounter) { 3541 super(next, traceCounter); 3542 } 3543 3544 @Override 3545 protected int onProcess(QueuedInputEvent q) { 3546 if (mInputQueue != null && q.mEvent instanceof KeyEvent) { 3547 mInputQueue.sendInputEvent(q.mEvent, q, true, this); 3548 return DEFER; 3549 } 3550 return FORWARD; 3551 } 3552 3553 @Override 3554 public void onFinishedInputEvent(Object token, boolean handled) { 3555 QueuedInputEvent q = (QueuedInputEvent)token; 3556 if (handled) { 3557 finish(q, true); 3558 return; 3559 } 3560 forward(q); 3561 } 3562 } 3563 3564 /** 3565 * Delivers pre-ime input events to the view hierarchy. 3566 * Does not support pointer events. 3567 */ 3568 final class ViewPreImeInputStage extends InputStage { 3569 public ViewPreImeInputStage(InputStage next) { 3570 super(next); 3571 } 3572 3573 @Override 3574 protected int onProcess(QueuedInputEvent q) { 3575 if (q.mEvent instanceof KeyEvent) { 3576 return processKeyEvent(q); 3577 } 3578 return FORWARD; 3579 } 3580 3581 private int processKeyEvent(QueuedInputEvent q) { 3582 final KeyEvent event = (KeyEvent)q.mEvent; 3583 if (mView.dispatchKeyEventPreIme(event)) { 3584 return FINISH_HANDLED; 3585 } 3586 return FORWARD; 3587 } 3588 } 3589 3590 /** 3591 * Delivers input events to the ime. 3592 * Does not support pointer events. 3593 */ 3594 final class ImeInputStage extends AsyncInputStage 3595 implements InputMethodManager.FinishedInputEventCallback { 3596 public ImeInputStage(InputStage next, String traceCounter) { 3597 super(next, traceCounter); 3598 } 3599 3600 @Override 3601 protected int onProcess(QueuedInputEvent q) { 3602 if (mLastWasImTarget) { 3603 InputMethodManager imm = InputMethodManager.peekInstance(); 3604 if (imm != null) { 3605 final InputEvent event = q.mEvent; 3606 if (DEBUG_IMF) Log.v(TAG, "Sending input event to IME: " + event); 3607 int result = imm.dispatchInputEvent(event, q, this, mHandler); 3608 if (result == InputMethodManager.DISPATCH_HANDLED) { 3609 return FINISH_HANDLED; 3610 } else if (result == InputMethodManager.DISPATCH_NOT_HANDLED) { 3611 return FINISH_NOT_HANDLED; 3612 } else { 3613 return DEFER; // callback will be invoked later 3614 } 3615 } 3616 } 3617 return FORWARD; 3618 } 3619 3620 @Override 3621 public void onFinishedInputEvent(Object token, boolean handled) { 3622 QueuedInputEvent q = (QueuedInputEvent)token; 3623 if (handled) { 3624 finish(q, true); 3625 return; 3626 } 3627 forward(q); 3628 } 3629 } 3630 3631 /** 3632 * Performs early processing of post-ime input events. 3633 */ 3634 final class EarlyPostImeInputStage extends InputStage { 3635 public EarlyPostImeInputStage(InputStage next) { 3636 super(next); 3637 } 3638 3639 @Override 3640 protected int onProcess(QueuedInputEvent q) { 3641 if (q.mEvent instanceof KeyEvent) { 3642 return processKeyEvent(q); 3643 } else { 3644 final int source = q.mEvent.getSource(); 3645 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 3646 return processPointerEvent(q); 3647 } 3648 } 3649 return FORWARD; 3650 } 3651 3652 private int processKeyEvent(QueuedInputEvent q) { 3653 final KeyEvent event = (KeyEvent)q.mEvent; 3654 3655 // If the key's purpose is to exit touch mode then we consume it 3656 // and consider it handled. 3657 if (checkForLeavingTouchModeAndConsume(event)) { 3658 return FINISH_HANDLED; 3659 } 3660 3661 // Make sure the fallback event policy sees all keys that will be 3662 // delivered to the view hierarchy. 3663 mFallbackEventHandler.preDispatchKeyEvent(event); 3664 return FORWARD; 3665 } 3666 3667 private int processPointerEvent(QueuedInputEvent q) { 3668 final MotionEvent event = (MotionEvent)q.mEvent; 3669 3670 // Translate the pointer event for compatibility, if needed. 3671 if (mTranslator != null) { 3672 mTranslator.translateEventInScreenToAppWindow(event); 3673 } 3674 3675 // Enter touch mode on down or scroll. 3676 final int action = event.getAction(); 3677 if (action == MotionEvent.ACTION_DOWN || action == MotionEvent.ACTION_SCROLL) { 3678 ensureTouchMode(true); 3679 } 3680 3681 // Offset the scroll position. 3682 if (mCurScrollY != 0) { 3683 event.offsetLocation(0, mCurScrollY); 3684 } 3685 3686 // Remember the touch position for possible drag-initiation. 3687 if (event.isTouchEvent()) { 3688 mLastTouchPoint.x = event.getRawX(); 3689 mLastTouchPoint.y = event.getRawY(); 3690 } 3691 return FORWARD; 3692 } 3693 } 3694 3695 /** 3696 * Delivers post-ime input events to a native activity. 3697 */ 3698 final class NativePostImeInputStage extends AsyncInputStage 3699 implements InputQueue.FinishedInputEventCallback { 3700 public NativePostImeInputStage(InputStage next, String traceCounter) { 3701 super(next, traceCounter); 3702 } 3703 3704 @Override 3705 protected int onProcess(QueuedInputEvent q) { 3706 if (mInputQueue != null) { 3707 mInputQueue.sendInputEvent(q.mEvent, q, false, this); 3708 return DEFER; 3709 } 3710 return FORWARD; 3711 } 3712 3713 @Override 3714 public void onFinishedInputEvent(Object token, boolean handled) { 3715 QueuedInputEvent q = (QueuedInputEvent)token; 3716 if (handled) { 3717 finish(q, true); 3718 return; 3719 } 3720 forward(q); 3721 } 3722 } 3723 3724 /** 3725 * Delivers post-ime input events to the view hierarchy. 3726 */ 3727 final class ViewPostImeInputStage extends InputStage { 3728 public ViewPostImeInputStage(InputStage next) { 3729 super(next); 3730 } 3731 3732 @Override 3733 protected int onProcess(QueuedInputEvent q) { 3734 if (q.mEvent instanceof KeyEvent) { 3735 return processKeyEvent(q); 3736 } else { 3737 final int source = q.mEvent.getSource(); 3738 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 3739 return processPointerEvent(q); 3740 } else if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 3741 return processTrackballEvent(q); 3742 } else { 3743 return processGenericMotionEvent(q); 3744 } 3745 } 3746 } 3747 3748 private int processKeyEvent(QueuedInputEvent q) { 3749 final KeyEvent event = (KeyEvent)q.mEvent; 3750 3751 // Deliver the key to the view hierarchy. 3752 if (mView.dispatchKeyEvent(event)) { 3753 return FINISH_HANDLED; 3754 } 3755 3756 // If the Control modifier is held, try to interpret the key as a shortcut. 3757 if (event.getAction() == KeyEvent.ACTION_DOWN 3758 && event.isCtrlPressed() 3759 && event.getRepeatCount() == 0 3760 && !KeyEvent.isModifierKey(event.getKeyCode())) { 3761 if (mView.dispatchKeyShortcutEvent(event)) { 3762 return FINISH_HANDLED; 3763 } 3764 } 3765 3766 // Apply the fallback event policy. 3767 if (mFallbackEventHandler.dispatchKeyEvent(event)) { 3768 return FINISH_HANDLED; 3769 } 3770 3771 // Handle automatic focus changes. 3772 if (event.getAction() == KeyEvent.ACTION_DOWN) { 3773 int direction = 0; 3774 switch (event.getKeyCode()) { 3775 case KeyEvent.KEYCODE_DPAD_LEFT: 3776 if (event.hasNoModifiers()) { 3777 direction = View.FOCUS_LEFT; 3778 } 3779 break; 3780 case KeyEvent.KEYCODE_DPAD_RIGHT: 3781 if (event.hasNoModifiers()) { 3782 direction = View.FOCUS_RIGHT; 3783 } 3784 break; 3785 case KeyEvent.KEYCODE_DPAD_UP: 3786 if (event.hasNoModifiers()) { 3787 direction = View.FOCUS_UP; 3788 } 3789 break; 3790 case KeyEvent.KEYCODE_DPAD_DOWN: 3791 if (event.hasNoModifiers()) { 3792 direction = View.FOCUS_DOWN; 3793 } 3794 break; 3795 case KeyEvent.KEYCODE_TAB: 3796 if (event.hasNoModifiers()) { 3797 direction = View.FOCUS_FORWARD; 3798 } else if (event.hasModifiers(KeyEvent.META_SHIFT_ON)) { 3799 direction = View.FOCUS_BACKWARD; 3800 } 3801 break; 3802 } 3803 if (direction != 0) { 3804 View focused = mView.findFocus(); 3805 if (focused != null) { 3806 View v = focused.focusSearch(direction); 3807 if (v != null && v != focused) { 3808 // do the math the get the interesting rect 3809 // of previous focused into the coord system of 3810 // newly focused view 3811 focused.getFocusedRect(mTempRect); 3812 if (mView instanceof ViewGroup) { 3813 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 3814 focused, mTempRect); 3815 ((ViewGroup) mView).offsetRectIntoDescendantCoords( 3816 v, mTempRect); 3817 } 3818 if (v.requestFocus(direction, mTempRect)) { 3819 playSoundEffect(SoundEffectConstants 3820 .getContantForFocusDirection(direction)); 3821 return FINISH_HANDLED; 3822 } 3823 } 3824 3825 // Give the focused view a last chance to handle the dpad key. 3826 if (mView.dispatchUnhandledMove(focused, direction)) { 3827 return FINISH_HANDLED; 3828 } 3829 } else { 3830 // find the best view to give focus to in this non-touch-mode with no-focus 3831 View v = focusSearch(null, direction); 3832 if (v != null && v.requestFocus(direction)) { 3833 return FINISH_HANDLED; 3834 } 3835 } 3836 } 3837 } 3838 return FORWARD; 3839 } 3840 3841 private int processPointerEvent(QueuedInputEvent q) { 3842 final MotionEvent event = (MotionEvent)q.mEvent; 3843 3844 if (mView.dispatchPointerEvent(event)) { 3845 return FINISH_HANDLED; 3846 } 3847 return FORWARD; 3848 } 3849 3850 private int processTrackballEvent(QueuedInputEvent q) { 3851 final MotionEvent event = (MotionEvent)q.mEvent; 3852 3853 if (mView.dispatchTrackballEvent(event)) { 3854 return FINISH_HANDLED; 3855 } 3856 return FORWARD; 3857 } 3858 3859 private int processGenericMotionEvent(QueuedInputEvent q) { 3860 final MotionEvent event = (MotionEvent)q.mEvent; 3861 3862 // Deliver the event to the view. 3863 if (mView.dispatchGenericMotionEvent(event)) { 3864 return FINISH_HANDLED; 3865 } 3866 return FORWARD; 3867 } 3868 } 3869 3870 /** 3871 * Performs synthesis of new input events from unhandled input events. 3872 */ 3873 final class SyntheticInputStage extends InputStage { 3874 private final SyntheticTrackballHandler mTrackball = new SyntheticTrackballHandler(); 3875 private final SyntheticJoystickHandler mJoystick = new SyntheticJoystickHandler(); 3876 private final SyntheticTouchNavigationHandler mTouchNavigation = 3877 new SyntheticTouchNavigationHandler(); 3878 3879 public SyntheticInputStage() { 3880 super(null); 3881 } 3882 3883 @Override 3884 protected int onProcess(QueuedInputEvent q) { 3885 q.mFlags |= QueuedInputEvent.FLAG_RESYNTHESIZED; 3886 if (q.mEvent instanceof MotionEvent) { 3887 final MotionEvent event = (MotionEvent)q.mEvent; 3888 final int source = event.getSource(); 3889 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 3890 mTrackball.process(event); 3891 return FINISH_HANDLED; 3892 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 3893 mJoystick.process(event); 3894 return FINISH_HANDLED; 3895 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 3896 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 3897 mTouchNavigation.process(event); 3898 return FINISH_HANDLED; 3899 } 3900 } 3901 return FORWARD; 3902 } 3903 3904 @Override 3905 protected void onDeliverToNext(QueuedInputEvent q) { 3906 if ((q.mFlags & QueuedInputEvent.FLAG_RESYNTHESIZED) == 0) { 3907 // Cancel related synthetic events if any prior stage has handled the event. 3908 if (q.mEvent instanceof MotionEvent) { 3909 final MotionEvent event = (MotionEvent)q.mEvent; 3910 final int source = event.getSource(); 3911 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 3912 mTrackball.cancel(event); 3913 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 3914 mJoystick.cancel(event); 3915 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 3916 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 3917 mTouchNavigation.cancel(event); 3918 } 3919 } 3920 } 3921 super.onDeliverToNext(q); 3922 } 3923 } 3924 3925 /** 3926 * Creates dpad events from unhandled trackball movements. 3927 */ 3928 final class SyntheticTrackballHandler { 3929 private final TrackballAxis mX = new TrackballAxis(); 3930 private final TrackballAxis mY = new TrackballAxis(); 3931 private long mLastTime; 3932 3933 public void process(MotionEvent event) { 3934 // Translate the trackball event into DPAD keys and try to deliver those. 3935 long curTime = SystemClock.uptimeMillis(); 3936 if ((mLastTime + MAX_TRACKBALL_DELAY) < curTime) { 3937 // It has been too long since the last movement, 3938 // so restart at the beginning. 3939 mX.reset(0); 3940 mY.reset(0); 3941 mLastTime = curTime; 3942 } 3943 3944 final int action = event.getAction(); 3945 final int metaState = event.getMetaState(); 3946 switch (action) { 3947 case MotionEvent.ACTION_DOWN: 3948 mX.reset(2); 3949 mY.reset(2); 3950 enqueueInputEvent(new KeyEvent(curTime, curTime, 3951 KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 3952 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 3953 InputDevice.SOURCE_KEYBOARD)); 3954 break; 3955 case MotionEvent.ACTION_UP: 3956 mX.reset(2); 3957 mY.reset(2); 3958 enqueueInputEvent(new KeyEvent(curTime, curTime, 3959 KeyEvent.ACTION_UP, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 3960 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 3961 InputDevice.SOURCE_KEYBOARD)); 3962 break; 3963 } 3964 3965 if (DEBUG_TRACKBALL) Log.v(TAG, "TB X=" + mX.position + " step=" 3966 + mX.step + " dir=" + mX.dir + " acc=" + mX.acceleration 3967 + " move=" + event.getX() 3968 + " / Y=" + mY.position + " step=" 3969 + mY.step + " dir=" + mY.dir + " acc=" + mY.acceleration 3970 + " move=" + event.getY()); 3971 final float xOff = mX.collect(event.getX(), event.getEventTime(), "X"); 3972 final float yOff = mY.collect(event.getY(), event.getEventTime(), "Y"); 3973 3974 // Generate DPAD events based on the trackball movement. 3975 // We pick the axis that has moved the most as the direction of 3976 // the DPAD. When we generate DPAD events for one axis, then the 3977 // other axis is reset -- we don't want to perform DPAD jumps due 3978 // to slight movements in the trackball when making major movements 3979 // along the other axis. 3980 int keycode = 0; 3981 int movement = 0; 3982 float accel = 1; 3983 if (xOff > yOff) { 3984 movement = mX.generate(); 3985 if (movement != 0) { 3986 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_RIGHT 3987 : KeyEvent.KEYCODE_DPAD_LEFT; 3988 accel = mX.acceleration; 3989 mY.reset(2); 3990 } 3991 } else if (yOff > 0) { 3992 movement = mY.generate(); 3993 if (movement != 0) { 3994 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_DOWN 3995 : KeyEvent.KEYCODE_DPAD_UP; 3996 accel = mY.acceleration; 3997 mX.reset(2); 3998 } 3999 } 4000 4001 if (keycode != 0) { 4002 if (movement < 0) movement = -movement; 4003 int accelMovement = (int)(movement * accel); 4004 if (DEBUG_TRACKBALL) Log.v(TAG, "Move: movement=" + movement 4005 + " accelMovement=" + accelMovement 4006 + " accel=" + accel); 4007 if (accelMovement > movement) { 4008 if (DEBUG_TRACKBALL) Log.v(TAG, "Delivering fake DPAD: " 4009 + keycode); 4010 movement--; 4011 int repeatCount = accelMovement - movement; 4012 enqueueInputEvent(new KeyEvent(curTime, curTime, 4013 KeyEvent.ACTION_MULTIPLE, keycode, repeatCount, metaState, 4014 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4015 InputDevice.SOURCE_KEYBOARD)); 4016 } 4017 while (movement > 0) { 4018 if (DEBUG_TRACKBALL) Log.v(TAG, "Delivering fake DPAD: " 4019 + keycode); 4020 movement--; 4021 curTime = SystemClock.uptimeMillis(); 4022 enqueueInputEvent(new KeyEvent(curTime, curTime, 4023 KeyEvent.ACTION_DOWN, keycode, 0, metaState, 4024 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4025 InputDevice.SOURCE_KEYBOARD)); 4026 enqueueInputEvent(new KeyEvent(curTime, curTime, 4027 KeyEvent.ACTION_UP, keycode, 0, metaState, 4028 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4029 InputDevice.SOURCE_KEYBOARD)); 4030 } 4031 mLastTime = curTime; 4032 } 4033 } 4034 4035 public void cancel(MotionEvent event) { 4036 mLastTime = Integer.MIN_VALUE; 4037 4038 // If we reach this, we consumed a trackball event. 4039 // Because we will not translate the trackball event into a key event, 4040 // touch mode will not exit, so we exit touch mode here. 4041 if (mView != null && mAdded) { 4042 ensureTouchMode(false); 4043 } 4044 } 4045 } 4046 4047 /** 4048 * Maintains state information for a single trackball axis, generating 4049 * discrete (DPAD) movements based on raw trackball motion. 4050 */ 4051 static final class TrackballAxis { 4052 /** 4053 * The maximum amount of acceleration we will apply. 4054 */ 4055 static final float MAX_ACCELERATION = 20; 4056 4057 /** 4058 * The maximum amount of time (in milliseconds) between events in order 4059 * for us to consider the user to be doing fast trackball movements, 4060 * and thus apply an acceleration. 4061 */ 4062 static final long FAST_MOVE_TIME = 150; 4063 4064 /** 4065 * Scaling factor to the time (in milliseconds) between events to how 4066 * much to multiple/divide the current acceleration. When movement 4067 * is < FAST_MOVE_TIME this multiplies the acceleration; when > 4068 * FAST_MOVE_TIME it divides it. 4069 */ 4070 static final float ACCEL_MOVE_SCALING_FACTOR = (1.0f/40); 4071 4072 static final float FIRST_MOVEMENT_THRESHOLD = 0.5f; 4073 static final float SECOND_CUMULATIVE_MOVEMENT_THRESHOLD = 2.0f; 4074 static final float SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD = 1.0f; 4075 4076 float position; 4077 float acceleration = 1; 4078 long lastMoveTime = 0; 4079 int step; 4080 int dir; 4081 int nonAccelMovement; 4082 4083 void reset(int _step) { 4084 position = 0; 4085 acceleration = 1; 4086 lastMoveTime = 0; 4087 step = _step; 4088 dir = 0; 4089 } 4090 4091 /** 4092 * Add trackball movement into the state. If the direction of movement 4093 * has been reversed, the state is reset before adding the 4094 * movement (so that you don't have to compensate for any previously 4095 * collected movement before see the result of the movement in the 4096 * new direction). 4097 * 4098 * @return Returns the absolute value of the amount of movement 4099 * collected so far. 4100 */ 4101 float collect(float off, long time, String axis) { 4102 long normTime; 4103 if (off > 0) { 4104 normTime = (long)(off * FAST_MOVE_TIME); 4105 if (dir < 0) { 4106 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to positive!"); 4107 position = 0; 4108 step = 0; 4109 acceleration = 1; 4110 lastMoveTime = 0; 4111 } 4112 dir = 1; 4113 } else if (off < 0) { 4114 normTime = (long)((-off) * FAST_MOVE_TIME); 4115 if (dir > 0) { 4116 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to negative!"); 4117 position = 0; 4118 step = 0; 4119 acceleration = 1; 4120 lastMoveTime = 0; 4121 } 4122 dir = -1; 4123 } else { 4124 normTime = 0; 4125 } 4126 4127 // The number of milliseconds between each movement that is 4128 // considered "normal" and will not result in any acceleration 4129 // or deceleration, scaled by the offset we have here. 4130 if (normTime > 0) { 4131 long delta = time - lastMoveTime; 4132 lastMoveTime = time; 4133 float acc = acceleration; 4134 if (delta < normTime) { 4135 // The user is scrolling rapidly, so increase acceleration. 4136 float scale = (normTime-delta) * ACCEL_MOVE_SCALING_FACTOR; 4137 if (scale > 1) acc *= scale; 4138 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " accelerate: off=" 4139 + off + " normTime=" + normTime + " delta=" + delta 4140 + " scale=" + scale + " acc=" + acc); 4141 acceleration = acc < MAX_ACCELERATION ? acc : MAX_ACCELERATION; 4142 } else { 4143 // The user is scrolling slowly, so decrease acceleration. 4144 float scale = (delta-normTime) * ACCEL_MOVE_SCALING_FACTOR; 4145 if (scale > 1) acc /= scale; 4146 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " deccelerate: off=" 4147 + off + " normTime=" + normTime + " delta=" + delta 4148 + " scale=" + scale + " acc=" + acc); 4149 acceleration = acc > 1 ? acc : 1; 4150 } 4151 } 4152 position += off; 4153 return Math.abs(position); 4154 } 4155 4156 /** 4157 * Generate the number of discrete movement events appropriate for 4158 * the currently collected trackball movement. 4159 * 4160 * @return Returns the number of discrete movements, either positive 4161 * or negative, or 0 if there is not enough trackball movement yet 4162 * for a discrete movement. 4163 */ 4164 int generate() { 4165 int movement = 0; 4166 nonAccelMovement = 0; 4167 do { 4168 final int dir = position >= 0 ? 1 : -1; 4169 switch (step) { 4170 // If we are going to execute the first step, then we want 4171 // to do this as soon as possible instead of waiting for 4172 // a full movement, in order to make things look responsive. 4173 case 0: 4174 if (Math.abs(position) < FIRST_MOVEMENT_THRESHOLD) { 4175 return movement; 4176 } 4177 movement += dir; 4178 nonAccelMovement += dir; 4179 step = 1; 4180 break; 4181 // If we have generated the first movement, then we need 4182 // to wait for the second complete trackball motion before 4183 // generating the second discrete movement. 4184 case 1: 4185 if (Math.abs(position) < SECOND_CUMULATIVE_MOVEMENT_THRESHOLD) { 4186 return movement; 4187 } 4188 movement += dir; 4189 nonAccelMovement += dir; 4190 position -= SECOND_CUMULATIVE_MOVEMENT_THRESHOLD * dir; 4191 step = 2; 4192 break; 4193 // After the first two, we generate discrete movements 4194 // consistently with the trackball, applying an acceleration 4195 // if the trackball is moving quickly. This is a simple 4196 // acceleration on top of what we already compute based 4197 // on how quickly the wheel is being turned, to apply 4198 // a longer increasing acceleration to continuous movement 4199 // in one direction. 4200 default: 4201 if (Math.abs(position) < SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD) { 4202 return movement; 4203 } 4204 movement += dir; 4205 position -= dir * SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD; 4206 float acc = acceleration; 4207 acc *= 1.1f; 4208 acceleration = acc < MAX_ACCELERATION ? acc : acceleration; 4209 break; 4210 } 4211 } while (true); 4212 } 4213 } 4214 4215 /** 4216 * Creates dpad events from unhandled joystick movements. 4217 */ 4218 final class SyntheticJoystickHandler extends Handler { 4219 private final static int MSG_ENQUEUE_X_AXIS_KEY_REPEAT = 1; 4220 private final static int MSG_ENQUEUE_Y_AXIS_KEY_REPEAT = 2; 4221 4222 private int mLastXDirection; 4223 private int mLastYDirection; 4224 private int mLastXKeyCode; 4225 private int mLastYKeyCode; 4226 4227 public SyntheticJoystickHandler() { 4228 super(true); 4229 } 4230 4231 @Override 4232 public void handleMessage(Message msg) { 4233 switch (msg.what) { 4234 case MSG_ENQUEUE_X_AXIS_KEY_REPEAT: 4235 case MSG_ENQUEUE_Y_AXIS_KEY_REPEAT: { 4236 KeyEvent oldEvent = (KeyEvent)msg.obj; 4237 KeyEvent e = KeyEvent.changeTimeRepeat(oldEvent, 4238 SystemClock.uptimeMillis(), 4239 oldEvent.getRepeatCount() + 1); 4240 if (mAttachInfo.mHasWindowFocus) { 4241 enqueueInputEvent(e); 4242 Message m = obtainMessage(msg.what, e); 4243 m.setAsynchronous(true); 4244 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatDelay()); 4245 } 4246 } break; 4247 } 4248 } 4249 4250 public void process(MotionEvent event) { 4251 update(event, true); 4252 } 4253 4254 public void cancel(MotionEvent event) { 4255 update(event, false); 4256 } 4257 4258 private void update(MotionEvent event, boolean synthesizeNewKeys) { 4259 final long time = event.getEventTime(); 4260 final int metaState = event.getMetaState(); 4261 final int deviceId = event.getDeviceId(); 4262 final int source = event.getSource(); 4263 4264 int xDirection = joystickAxisValueToDirection( 4265 event.getAxisValue(MotionEvent.AXIS_HAT_X)); 4266 if (xDirection == 0) { 4267 xDirection = joystickAxisValueToDirection(event.getX()); 4268 } 4269 4270 int yDirection = joystickAxisValueToDirection( 4271 event.getAxisValue(MotionEvent.AXIS_HAT_Y)); 4272 if (yDirection == 0) { 4273 yDirection = joystickAxisValueToDirection(event.getY()); 4274 } 4275 4276 if (xDirection != mLastXDirection) { 4277 if (mLastXKeyCode != 0) { 4278 removeMessages(MSG_ENQUEUE_X_AXIS_KEY_REPEAT); 4279 enqueueInputEvent(new KeyEvent(time, time, 4280 KeyEvent.ACTION_UP, mLastXKeyCode, 0, metaState, 4281 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4282 mLastXKeyCode = 0; 4283 } 4284 4285 mLastXDirection = xDirection; 4286 4287 if (xDirection != 0 && synthesizeNewKeys) { 4288 mLastXKeyCode = xDirection > 0 4289 ? KeyEvent.KEYCODE_DPAD_RIGHT : KeyEvent.KEYCODE_DPAD_LEFT; 4290 final KeyEvent e = new KeyEvent(time, time, 4291 KeyEvent.ACTION_DOWN, mLastXKeyCode, 0, metaState, 4292 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4293 enqueueInputEvent(e); 4294 Message m = obtainMessage(MSG_ENQUEUE_X_AXIS_KEY_REPEAT, e); 4295 m.setAsynchronous(true); 4296 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4297 } 4298 } 4299 4300 if (yDirection != mLastYDirection) { 4301 if (mLastYKeyCode != 0) { 4302 removeMessages(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT); 4303 enqueueInputEvent(new KeyEvent(time, time, 4304 KeyEvent.ACTION_UP, mLastYKeyCode, 0, metaState, 4305 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4306 mLastYKeyCode = 0; 4307 } 4308 4309 mLastYDirection = yDirection; 4310 4311 if (yDirection != 0 && synthesizeNewKeys) { 4312 mLastYKeyCode = yDirection > 0 4313 ? KeyEvent.KEYCODE_DPAD_DOWN : KeyEvent.KEYCODE_DPAD_UP; 4314 final KeyEvent e = new KeyEvent(time, time, 4315 KeyEvent.ACTION_DOWN, mLastYKeyCode, 0, metaState, 4316 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4317 enqueueInputEvent(e); 4318 Message m = obtainMessage(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT, e); 4319 m.setAsynchronous(true); 4320 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4321 } 4322 } 4323 } 4324 4325 private int joystickAxisValueToDirection(float value) { 4326 if (value >= 0.5f) { 4327 return 1; 4328 } else if (value <= -0.5f) { 4329 return -1; 4330 } else { 4331 return 0; 4332 } 4333 } 4334 } 4335 4336 /** 4337 * Creates dpad events from unhandled touch navigation movements. 4338 */ 4339 final class SyntheticTouchNavigationHandler extends Handler { 4340 private static final String LOCAL_TAG = "SyntheticTouchNavigationHandler"; 4341 private static final boolean LOCAL_DEBUG = false; 4342 4343 // Assumed nominal width and height in millimeters of a touch navigation pad, 4344 // if no resolution information is available from the input system. 4345 private static final float DEFAULT_WIDTH_MILLIMETERS = 48; 4346 private static final float DEFAULT_HEIGHT_MILLIMETERS = 48; 4347 4348 /* TODO: These constants should eventually be moved to ViewConfiguration. */ 4349 4350 // Tap timeout in milliseconds. 4351 private static final int TAP_TIMEOUT = 250; 4352 4353 // The maximum distance traveled for a gesture to be considered a tap in millimeters. 4354 private static final int TAP_SLOP_MILLIMETERS = 5; 4355 4356 // The nominal distance traveled to move by one unit. 4357 private static final int TICK_DISTANCE_MILLIMETERS = 12; 4358 4359 // Minimum and maximum fling velocity in ticks per second. 4360 // The minimum velocity should be set such that we perform enough ticks per 4361 // second that the fling appears to be fluid. For example, if we set the minimum 4362 // to 2 ticks per second, then there may be up to half a second delay between the next 4363 // to last and last ticks which is noticeably discrete and jerky. This value should 4364 // probably not be set to anything less than about 4. 4365 // If fling accuracy is a problem then consider tuning the tick distance instead. 4366 private static final float MIN_FLING_VELOCITY_TICKS_PER_SECOND = 6f; 4367 private static final float MAX_FLING_VELOCITY_TICKS_PER_SECOND = 20f; 4368 4369 // Fling velocity decay factor applied after each new key is emitted. 4370 // This parameter controls the deceleration and overall duration of the fling. 4371 // The fling stops automatically when its velocity drops below the minimum 4372 // fling velocity defined above. 4373 private static final float FLING_TICK_DECAY = 0.8f; 4374 4375 /* The input device that we are tracking. */ 4376 4377 private int mCurrentDeviceId = -1; 4378 private int mCurrentSource; 4379 private boolean mCurrentDeviceSupported; 4380 4381 /* Configuration for the current input device. */ 4382 4383 // The tap timeout and scaled slop. 4384 private int mConfigTapTimeout; 4385 private float mConfigTapSlop; 4386 4387 // The scaled tick distance. A movement of this amount should generally translate 4388 // into a single dpad event in a given direction. 4389 private float mConfigTickDistance; 4390 4391 // The minimum and maximum scaled fling velocity. 4392 private float mConfigMinFlingVelocity; 4393 private float mConfigMaxFlingVelocity; 4394 4395 /* Tracking state. */ 4396 4397 // The velocity tracker for detecting flings. 4398 private VelocityTracker mVelocityTracker; 4399 4400 // The active pointer id, or -1 if none. 4401 private int mActivePointerId = -1; 4402 4403 // Time and location where tracking started. 4404 private long mStartTime; 4405 private float mStartX; 4406 private float mStartY; 4407 4408 // Most recently observed position. 4409 private float mLastX; 4410 private float mLastY; 4411 4412 // Accumulated movement delta since the last direction key was sent. 4413 private float mAccumulatedX; 4414 private float mAccumulatedY; 4415 4416 // Set to true if any movement was delivered to the app. 4417 // Implies that tap slop was exceeded. 4418 private boolean mConsumedMovement; 4419 4420 // The most recently sent key down event. 4421 // The keycode remains set until the direction changes or a fling ends 4422 // so that repeated key events may be generated as required. 4423 private long mPendingKeyDownTime; 4424 private int mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 4425 private int mPendingKeyRepeatCount; 4426 private int mPendingKeyMetaState; 4427 4428 // The current fling velocity while a fling is in progress. 4429 private boolean mFlinging; 4430 private float mFlingVelocity; 4431 4432 public SyntheticTouchNavigationHandler() { 4433 super(true); 4434 } 4435 4436 public void process(MotionEvent event) { 4437 // Update the current device information. 4438 final long time = event.getEventTime(); 4439 final int deviceId = event.getDeviceId(); 4440 final int source = event.getSource(); 4441 if (mCurrentDeviceId != deviceId || mCurrentSource != source) { 4442 finishKeys(time); 4443 finishTracking(time); 4444 mCurrentDeviceId = deviceId; 4445 mCurrentSource = source; 4446 mCurrentDeviceSupported = false; 4447 InputDevice device = event.getDevice(); 4448 if (device != null) { 4449 // In order to support an input device, we must know certain 4450 // characteristics about it, such as its size and resolution. 4451 InputDevice.MotionRange xRange = device.getMotionRange(MotionEvent.AXIS_X); 4452 InputDevice.MotionRange yRange = device.getMotionRange(MotionEvent.AXIS_Y); 4453 if (xRange != null && yRange != null) { 4454 mCurrentDeviceSupported = true; 4455 4456 // Infer the resolution if it not actually known. 4457 float xRes = xRange.getResolution(); 4458 if (xRes <= 0) { 4459 xRes = xRange.getRange() / DEFAULT_WIDTH_MILLIMETERS; 4460 } 4461 float yRes = yRange.getResolution(); 4462 if (yRes <= 0) { 4463 yRes = yRange.getRange() / DEFAULT_HEIGHT_MILLIMETERS; 4464 } 4465 float nominalRes = (xRes + yRes) * 0.5f; 4466 4467 // Precompute all of the configuration thresholds we will need. 4468 mConfigTapTimeout = TAP_TIMEOUT; 4469 mConfigTapSlop = TAP_SLOP_MILLIMETERS * nominalRes; 4470 mConfigTickDistance = TICK_DISTANCE_MILLIMETERS * nominalRes; 4471 mConfigMinFlingVelocity = 4472 MIN_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 4473 mConfigMaxFlingVelocity = 4474 MAX_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 4475 4476 if (LOCAL_DEBUG) { 4477 Log.d(LOCAL_TAG, "Configured device " + mCurrentDeviceId 4478 + " (" + Integer.toHexString(mCurrentSource) + "): " 4479 + "mConfigTapTimeout=" + mConfigTapTimeout 4480 + ", mConfigTapSlop=" + mConfigTapSlop 4481 + ", mConfigTickDistance=" + mConfigTickDistance 4482 + ", mConfigMinFlingVelocity=" + mConfigMinFlingVelocity 4483 + ", mConfigMaxFlingVelocity=" + mConfigMaxFlingVelocity); 4484 } 4485 } 4486 } 4487 } 4488 if (!mCurrentDeviceSupported) { 4489 return; 4490 } 4491 4492 // Handle the event. 4493 final int action = event.getActionMasked(); 4494 switch (action) { 4495 case MotionEvent.ACTION_DOWN: { 4496 boolean caughtFling = mFlinging; 4497 finishKeys(time); 4498 finishTracking(time); 4499 mActivePointerId = event.getPointerId(0); 4500 mVelocityTracker = VelocityTracker.obtain(); 4501 mVelocityTracker.addMovement(event); 4502 mStartTime = time; 4503 mStartX = event.getX(); 4504 mStartY = event.getY(); 4505 mLastX = mStartX; 4506 mLastY = mStartY; 4507 mAccumulatedX = 0; 4508 mAccumulatedY = 0; 4509 4510 // If we caught a fling, then pretend that the tap slop has already 4511 // been exceeded to suppress taps whose only purpose is to stop the fling. 4512 mConsumedMovement = caughtFling; 4513 break; 4514 } 4515 4516 case MotionEvent.ACTION_MOVE: 4517 case MotionEvent.ACTION_UP: { 4518 if (mActivePointerId < 0) { 4519 break; 4520 } 4521 final int index = event.findPointerIndex(mActivePointerId); 4522 if (index < 0) { 4523 finishKeys(time); 4524 finishTracking(time); 4525 break; 4526 } 4527 4528 mVelocityTracker.addMovement(event); 4529 final float x = event.getX(index); 4530 final float y = event.getY(index); 4531 mAccumulatedX += x - mLastX; 4532 mAccumulatedY += y - mLastY; 4533 mLastX = x; 4534 mLastY = y; 4535 4536 // Consume any accumulated movement so far. 4537 final int metaState = event.getMetaState(); 4538 consumeAccumulatedMovement(time, metaState); 4539 4540 // Detect taps and flings. 4541 if (action == MotionEvent.ACTION_UP) { 4542 if (!mConsumedMovement 4543 && Math.hypot(mLastX - mStartX, mLastY - mStartY) < mConfigTapSlop 4544 && time <= mStartTime + mConfigTapTimeout) { 4545 // It's a tap! 4546 finishKeys(time); 4547 sendKeyDownOrRepeat(time, KeyEvent.KEYCODE_DPAD_CENTER, metaState); 4548 sendKeyUp(time); 4549 } else if (mConsumedMovement 4550 && mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 4551 // It might be a fling. 4552 mVelocityTracker.computeCurrentVelocity(1000, mConfigMaxFlingVelocity); 4553 final float vx = mVelocityTracker.getXVelocity(mActivePointerId); 4554 final float vy = mVelocityTracker.getYVelocity(mActivePointerId); 4555 if (!startFling(time, vx, vy)) { 4556 finishKeys(time); 4557 } 4558 } 4559 finishTracking(time); 4560 } 4561 break; 4562 } 4563 4564 case MotionEvent.ACTION_CANCEL: { 4565 finishKeys(time); 4566 finishTracking(time); 4567 break; 4568 } 4569 } 4570 } 4571 4572 public void cancel(MotionEvent event) { 4573 if (mCurrentDeviceId == event.getDeviceId() 4574 && mCurrentSource == event.getSource()) { 4575 final long time = event.getEventTime(); 4576 finishKeys(time); 4577 finishTracking(time); 4578 } 4579 } 4580 4581 private void finishKeys(long time) { 4582 cancelFling(); 4583 sendKeyUp(time); 4584 } 4585 4586 private void finishTracking(long time) { 4587 if (mActivePointerId >= 0) { 4588 mActivePointerId = -1; 4589 mVelocityTracker.recycle(); 4590 mVelocityTracker = null; 4591 } 4592 } 4593 4594 private void consumeAccumulatedMovement(long time, int metaState) { 4595 final float absX = Math.abs(mAccumulatedX); 4596 final float absY = Math.abs(mAccumulatedY); 4597 if (absX >= absY) { 4598 if (absX >= mConfigTickDistance) { 4599 mAccumulatedX = consumeAccumulatedMovement(time, metaState, mAccumulatedX, 4600 KeyEvent.KEYCODE_DPAD_LEFT, KeyEvent.KEYCODE_DPAD_RIGHT); 4601 mAccumulatedY = 0; 4602 mConsumedMovement = true; 4603 } 4604 } else { 4605 if (absY >= mConfigTickDistance) { 4606 mAccumulatedY = consumeAccumulatedMovement(time, metaState, mAccumulatedY, 4607 KeyEvent.KEYCODE_DPAD_UP, KeyEvent.KEYCODE_DPAD_DOWN); 4608 mAccumulatedX = 0; 4609 mConsumedMovement = true; 4610 } 4611 } 4612 } 4613 4614 private float consumeAccumulatedMovement(long time, int metaState, 4615 float accumulator, int negativeKeyCode, int positiveKeyCode) { 4616 while (accumulator <= -mConfigTickDistance) { 4617 sendKeyDownOrRepeat(time, negativeKeyCode, metaState); 4618 accumulator += mConfigTickDistance; 4619 } 4620 while (accumulator >= mConfigTickDistance) { 4621 sendKeyDownOrRepeat(time, positiveKeyCode, metaState); 4622 accumulator -= mConfigTickDistance; 4623 } 4624 return accumulator; 4625 } 4626 4627 private void sendKeyDownOrRepeat(long time, int keyCode, int metaState) { 4628 if (mPendingKeyCode != keyCode) { 4629 sendKeyUp(time); 4630 mPendingKeyDownTime = time; 4631 mPendingKeyCode = keyCode; 4632 mPendingKeyRepeatCount = 0; 4633 } else { 4634 mPendingKeyRepeatCount += 1; 4635 } 4636 mPendingKeyMetaState = metaState; 4637 4638 // Note: Normally we would pass FLAG_LONG_PRESS when the repeat count is 1 4639 // but it doesn't quite make sense when simulating the events in this way. 4640 if (LOCAL_DEBUG) { 4641 Log.d(LOCAL_TAG, "Sending key down: keyCode=" + mPendingKeyCode 4642 + ", repeatCount=" + mPendingKeyRepeatCount 4643 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 4644 } 4645 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 4646 KeyEvent.ACTION_DOWN, mPendingKeyCode, mPendingKeyRepeatCount, 4647 mPendingKeyMetaState, mCurrentDeviceId, 4648 KeyEvent.FLAG_FALLBACK, mCurrentSource)); 4649 } 4650 4651 private void sendKeyUp(long time) { 4652 if (mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 4653 if (LOCAL_DEBUG) { 4654 Log.d(LOCAL_TAG, "Sending key up: keyCode=" + mPendingKeyCode 4655 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 4656 } 4657 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 4658 KeyEvent.ACTION_UP, mPendingKeyCode, 0, mPendingKeyMetaState, 4659 mCurrentDeviceId, 0, KeyEvent.FLAG_FALLBACK, 4660 mCurrentSource)); 4661 mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 4662 } 4663 } 4664 4665 private boolean startFling(long time, float vx, float vy) { 4666 if (LOCAL_DEBUG) { 4667 Log.d(LOCAL_TAG, "Considering fling: vx=" + vx + ", vy=" + vy 4668 + ", min=" + mConfigMinFlingVelocity); 4669 } 4670 4671 // Flings must be oriented in the same direction as the preceding movements. 4672 switch (mPendingKeyCode) { 4673 case KeyEvent.KEYCODE_DPAD_LEFT: 4674 if (-vx >= mConfigMinFlingVelocity 4675 && Math.abs(vy) < mConfigMinFlingVelocity) { 4676 mFlingVelocity = -vx; 4677 break; 4678 } 4679 return false; 4680 4681 case KeyEvent.KEYCODE_DPAD_RIGHT: 4682 if (vx >= mConfigMinFlingVelocity 4683 && Math.abs(vy) < mConfigMinFlingVelocity) { 4684 mFlingVelocity = vx; 4685 break; 4686 } 4687 return false; 4688 4689 case KeyEvent.KEYCODE_DPAD_UP: 4690 if (-vy >= mConfigMinFlingVelocity 4691 && Math.abs(vx) < mConfigMinFlingVelocity) { 4692 mFlingVelocity = -vy; 4693 break; 4694 } 4695 return false; 4696 4697 case KeyEvent.KEYCODE_DPAD_DOWN: 4698 if (vy >= mConfigMinFlingVelocity 4699 && Math.abs(vx) < mConfigMinFlingVelocity) { 4700 mFlingVelocity = vy; 4701 break; 4702 } 4703 return false; 4704 } 4705 4706 // Post the first fling event. 4707 mFlinging = postFling(time); 4708 return mFlinging; 4709 } 4710 4711 private boolean postFling(long time) { 4712 // The idea here is to estimate the time when the pointer would have 4713 // traveled one tick distance unit given the current fling velocity. 4714 // This effect creates continuity of motion. 4715 if (mFlingVelocity >= mConfigMinFlingVelocity) { 4716 long delay = (long)(mConfigTickDistance / mFlingVelocity * 1000); 4717 postAtTime(mFlingRunnable, time + delay); 4718 if (LOCAL_DEBUG) { 4719 Log.d(LOCAL_TAG, "Posted fling: velocity=" 4720 + mFlingVelocity + ", delay=" + delay 4721 + ", keyCode=" + mPendingKeyCode); 4722 } 4723 return true; 4724 } 4725 return false; 4726 } 4727 4728 private void cancelFling() { 4729 if (mFlinging) { 4730 removeCallbacks(mFlingRunnable); 4731 mFlinging = false; 4732 } 4733 } 4734 4735 private final Runnable mFlingRunnable = new Runnable() { 4736 @Override 4737 public void run() { 4738 final long time = SystemClock.uptimeMillis(); 4739 sendKeyDownOrRepeat(time, mPendingKeyCode, mPendingKeyMetaState); 4740 mFlingVelocity *= FLING_TICK_DECAY; 4741 if (!postFling(time)) { 4742 mFlinging = false; 4743 finishKeys(time); 4744 } 4745 } 4746 }; 4747 } 4748 4749 /** 4750 * Returns true if the key is used for keyboard navigation. 4751 * @param keyEvent The key event. 4752 * @return True if the key is used for keyboard navigation. 4753 */ 4754 private static boolean isNavigationKey(KeyEvent keyEvent) { 4755 switch (keyEvent.getKeyCode()) { 4756 case KeyEvent.KEYCODE_DPAD_LEFT: 4757 case KeyEvent.KEYCODE_DPAD_RIGHT: 4758 case KeyEvent.KEYCODE_DPAD_UP: 4759 case KeyEvent.KEYCODE_DPAD_DOWN: 4760 case KeyEvent.KEYCODE_DPAD_CENTER: 4761 case KeyEvent.KEYCODE_PAGE_UP: 4762 case KeyEvent.KEYCODE_PAGE_DOWN: 4763 case KeyEvent.KEYCODE_MOVE_HOME: 4764 case KeyEvent.KEYCODE_MOVE_END: 4765 case KeyEvent.KEYCODE_TAB: 4766 case KeyEvent.KEYCODE_SPACE: 4767 case KeyEvent.KEYCODE_ENTER: 4768 return true; 4769 } 4770 return false; 4771 } 4772 4773 /** 4774 * Returns true if the key is used for typing. 4775 * @param keyEvent The key event. 4776 * @return True if the key is used for typing. 4777 */ 4778 private static boolean isTypingKey(KeyEvent keyEvent) { 4779 return keyEvent.getUnicodeChar() > 0; 4780 } 4781 4782 /** 4783 * See if the key event means we should leave touch mode (and leave touch mode if so). 4784 * @param event The key event. 4785 * @return Whether this key event should be consumed (meaning the act of 4786 * leaving touch mode alone is considered the event). 4787 */ 4788 private boolean checkForLeavingTouchModeAndConsume(KeyEvent event) { 4789 // Only relevant in touch mode. 4790 if (!mAttachInfo.mInTouchMode) { 4791 return false; 4792 } 4793 4794 // Only consider leaving touch mode on DOWN or MULTIPLE actions, never on UP. 4795 final int action = event.getAction(); 4796 if (action != KeyEvent.ACTION_DOWN && action != KeyEvent.ACTION_MULTIPLE) { 4797 return false; 4798 } 4799 4800 // Don't leave touch mode if the IME told us not to. 4801 if ((event.getFlags() & KeyEvent.FLAG_KEEP_TOUCH_MODE) != 0) { 4802 return false; 4803 } 4804 4805 // If the key can be used for keyboard navigation then leave touch mode 4806 // and select a focused view if needed (in ensureTouchMode). 4807 // When a new focused view is selected, we consume the navigation key because 4808 // navigation doesn't make much sense unless a view already has focus so 4809 // the key's purpose is to set focus. 4810 if (isNavigationKey(event)) { 4811 return ensureTouchMode(false); 4812 } 4813 4814 // If the key can be used for typing then leave touch mode 4815 // and select a focused view if needed (in ensureTouchMode). 4816 // Always allow the view to process the typing key. 4817 if (isTypingKey(event)) { 4818 ensureTouchMode(false); 4819 return false; 4820 } 4821 4822 return false; 4823 } 4824 4825 /* drag/drop */ 4826 void setLocalDragState(Object obj) { 4827 mLocalDragState = obj; 4828 } 4829 4830 private void handleDragEvent(DragEvent event) { 4831 // From the root, only drag start/end/location are dispatched. entered/exited 4832 // are determined and dispatched by the viewgroup hierarchy, who then report 4833 // that back here for ultimate reporting back to the framework. 4834 if (mView != null && mAdded) { 4835 final int what = event.mAction; 4836 4837 if (what == DragEvent.ACTION_DRAG_EXITED) { 4838 // A direct EXITED event means that the window manager knows we've just crossed 4839 // a window boundary, so the current drag target within this one must have 4840 // just been exited. Send it the usual notifications and then we're done 4841 // for now. 4842 mView.dispatchDragEvent(event); 4843 } else { 4844 // Cache the drag description when the operation starts, then fill it in 4845 // on subsequent calls as a convenience 4846 if (what == DragEvent.ACTION_DRAG_STARTED) { 4847 mCurrentDragView = null; // Start the current-recipient tracking 4848 mDragDescription = event.mClipDescription; 4849 } else { 4850 event.mClipDescription = mDragDescription; 4851 } 4852 4853 // For events with a [screen] location, translate into window coordinates 4854 if ((what == DragEvent.ACTION_DRAG_LOCATION) || (what == DragEvent.ACTION_DROP)) { 4855 mDragPoint.set(event.mX, event.mY); 4856 if (mTranslator != null) { 4857 mTranslator.translatePointInScreenToAppWindow(mDragPoint); 4858 } 4859 4860 if (mCurScrollY != 0) { 4861 mDragPoint.offset(0, mCurScrollY); 4862 } 4863 4864 event.mX = mDragPoint.x; 4865 event.mY = mDragPoint.y; 4866 } 4867 4868 // Remember who the current drag target is pre-dispatch 4869 final View prevDragView = mCurrentDragView; 4870 4871 // Now dispatch the drag/drop event 4872 boolean result = mView.dispatchDragEvent(event); 4873 4874 // If we changed apparent drag target, tell the OS about it 4875 if (prevDragView != mCurrentDragView) { 4876 try { 4877 if (prevDragView != null) { 4878 mWindowSession.dragRecipientExited(mWindow); 4879 } 4880 if (mCurrentDragView != null) { 4881 mWindowSession.dragRecipientEntered(mWindow); 4882 } 4883 } catch (RemoteException e) { 4884 Slog.e(TAG, "Unable to note drag target change"); 4885 } 4886 } 4887 4888 // Report the drop result when we're done 4889 if (what == DragEvent.ACTION_DROP) { 4890 mDragDescription = null; 4891 try { 4892 Log.i(TAG, "Reporting drop result: " + result); 4893 mWindowSession.reportDropResult(mWindow, result); 4894 } catch (RemoteException e) { 4895 Log.e(TAG, "Unable to report drop result"); 4896 } 4897 } 4898 4899 // When the drag operation ends, release any local state object 4900 // that may have been in use 4901 if (what == DragEvent.ACTION_DRAG_ENDED) { 4902 setLocalDragState(null); 4903 } 4904 } 4905 } 4906 event.recycle(); 4907 } 4908 4909 public void handleDispatchSystemUiVisibilityChanged(SystemUiVisibilityInfo args) { 4910 if (mSeq != args.seq) { 4911 // The sequence has changed, so we need to update our value and make 4912 // sure to do a traversal afterward so the window manager is given our 4913 // most recent data. 4914 mSeq = args.seq; 4915 mAttachInfo.mForceReportNewAttributes = true; 4916 scheduleTraversals(); 4917 } 4918 if (mView == null) return; 4919 if (args.localChanges != 0) { 4920 mView.updateLocalSystemUiVisibility(args.localValue, args.localChanges); 4921 } 4922 if (mAttachInfo != null) { 4923 int visibility = args.globalVisibility&View.SYSTEM_UI_CLEARABLE_FLAGS; 4924 if (visibility != mAttachInfo.mGlobalSystemUiVisibility) { 4925 mAttachInfo.mGlobalSystemUiVisibility = visibility; 4926 mView.dispatchSystemUiVisibilityChanged(visibility); 4927 } 4928 } 4929 } 4930 4931 public void handleDispatchDoneAnimating() { 4932 if (mWindowsAnimating) { 4933 mWindowsAnimating = false; 4934 if (!mDirty.isEmpty() || mIsAnimating || mFullRedrawNeeded) { 4935 scheduleTraversals(); 4936 } 4937 } 4938 } 4939 4940 public void getLastTouchPoint(Point outLocation) { 4941 outLocation.x = (int) mLastTouchPoint.x; 4942 outLocation.y = (int) mLastTouchPoint.y; 4943 } 4944 4945 public void setDragFocus(View newDragTarget) { 4946 if (mCurrentDragView != newDragTarget) { 4947 mCurrentDragView = newDragTarget; 4948 } 4949 } 4950 4951 private AudioManager getAudioManager() { 4952 if (mView == null) { 4953 throw new IllegalStateException("getAudioManager called when there is no mView"); 4954 } 4955 if (mAudioManager == null) { 4956 mAudioManager = (AudioManager) mView.getContext().getSystemService(Context.AUDIO_SERVICE); 4957 } 4958 return mAudioManager; 4959 } 4960 4961 public AccessibilityInteractionController getAccessibilityInteractionController() { 4962 if (mView == null) { 4963 throw new IllegalStateException("getAccessibilityInteractionController" 4964 + " called when there is no mView"); 4965 } 4966 if (mAccessibilityInteractionController == null) { 4967 mAccessibilityInteractionController = new AccessibilityInteractionController(this); 4968 } 4969 return mAccessibilityInteractionController; 4970 } 4971 4972 private int relayoutWindow(WindowManager.LayoutParams params, int viewVisibility, 4973 boolean insetsPending) throws RemoteException { 4974 4975 float appScale = mAttachInfo.mApplicationScale; 4976 boolean restore = false; 4977 if (params != null && mTranslator != null) { 4978 restore = true; 4979 params.backup(); 4980 mTranslator.translateWindowLayout(params); 4981 } 4982 if (params != null) { 4983 if (DBG) Log.d(TAG, "WindowLayout in layoutWindow:" + params); 4984 } 4985 mPendingConfiguration.seq = 0; 4986 //Log.d(TAG, ">>>>>> CALLING relayout"); 4987 if (params != null && mOrigWindowType != params.type) { 4988 // For compatibility with old apps, don't crash here. 4989 if (mTargetSdkVersion < android.os.Build.VERSION_CODES.ICE_CREAM_SANDWICH) { 4990 Slog.w(TAG, "Window type can not be changed after " 4991 + "the window is added; ignoring change of " + mView); 4992 params.type = mOrigWindowType; 4993 } 4994 } 4995 int relayoutResult = mWindowSession.relayout( 4996 mWindow, mSeq, params, 4997 (int) (mView.getMeasuredWidth() * appScale + 0.5f), 4998 (int) (mView.getMeasuredHeight() * appScale + 0.5f), 4999 viewVisibility, insetsPending ? WindowManagerGlobal.RELAYOUT_INSETS_PENDING : 0, 5000 mWinFrame, mPendingOverscanInsets, mPendingContentInsets, mPendingVisibleInsets, 5001 mPendingConfiguration, mSurface); 5002 //Log.d(TAG, "<<<<<< BACK FROM relayout"); 5003 if (restore) { 5004 params.restore(); 5005 } 5006 5007 if (mTranslator != null) { 5008 mTranslator.translateRectInScreenToAppWinFrame(mWinFrame); 5009 mTranslator.translateRectInScreenToAppWindow(mPendingOverscanInsets); 5010 mTranslator.translateRectInScreenToAppWindow(mPendingContentInsets); 5011 mTranslator.translateRectInScreenToAppWindow(mPendingVisibleInsets); 5012 } 5013 return relayoutResult; 5014 } 5015 5016 /** 5017 * {@inheritDoc} 5018 */ 5019 public void playSoundEffect(int effectId) { 5020 checkThread(); 5021 5022 if (mMediaDisabled) { 5023 return; 5024 } 5025 5026 try { 5027 final AudioManager audioManager = getAudioManager(); 5028 5029 switch (effectId) { 5030 case SoundEffectConstants.CLICK: 5031 audioManager.playSoundEffect(AudioManager.FX_KEY_CLICK); 5032 return; 5033 case SoundEffectConstants.NAVIGATION_DOWN: 5034 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_DOWN); 5035 return; 5036 case SoundEffectConstants.NAVIGATION_LEFT: 5037 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_LEFT); 5038 return; 5039 case SoundEffectConstants.NAVIGATION_RIGHT: 5040 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_RIGHT); 5041 return; 5042 case SoundEffectConstants.NAVIGATION_UP: 5043 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_UP); 5044 return; 5045 default: 5046 throw new IllegalArgumentException("unknown effect id " + effectId + 5047 " not defined in " + SoundEffectConstants.class.getCanonicalName()); 5048 } 5049 } catch (IllegalStateException e) { 5050 // Exception thrown by getAudioManager() when mView is null 5051 Log.e(TAG, "FATAL EXCEPTION when attempting to play sound effect: " + e); 5052 e.printStackTrace(); 5053 } 5054 } 5055 5056 /** 5057 * {@inheritDoc} 5058 */ 5059 public boolean performHapticFeedback(int effectId, boolean always) { 5060 try { 5061 return mWindowSession.performHapticFeedback(mWindow, effectId, always); 5062 } catch (RemoteException e) { 5063 return false; 5064 } 5065 } 5066 5067 /** 5068 * {@inheritDoc} 5069 */ 5070 public View focusSearch(View focused, int direction) { 5071 checkThread(); 5072 if (!(mView instanceof ViewGroup)) { 5073 return null; 5074 } 5075 return FocusFinder.getInstance().findNextFocus((ViewGroup) mView, focused, direction); 5076 } 5077 5078 public void debug() { 5079 mView.debug(); 5080 } 5081 5082 public void dumpGfxInfo(int[] info) { 5083 info[0] = info[1] = 0; 5084 if (mView != null) { 5085 getGfxInfo(mView, info); 5086 } 5087 } 5088 5089 private static void getGfxInfo(View view, int[] info) { 5090 DisplayList displayList = view.mDisplayList; 5091 info[0]++; 5092 if (displayList != null) { 5093 info[1] += displayList.getSize(); 5094 } 5095 5096 if (view instanceof ViewGroup) { 5097 ViewGroup group = (ViewGroup) view; 5098 5099 int count = group.getChildCount(); 5100 for (int i = 0; i < count; i++) { 5101 getGfxInfo(group.getChildAt(i), info); 5102 } 5103 } 5104 } 5105 5106 public void die(boolean immediate) { 5107 // Make sure we do execute immediately if we are in the middle of a traversal or the damage 5108 // done by dispatchDetachedFromWindow will cause havoc on return. 5109 if (immediate && !mIsInTraversal) { 5110 doDie(); 5111 } else { 5112 if (!mIsDrawing) { 5113 destroyHardwareRenderer(); 5114 } else { 5115 Log.e(TAG, "Attempting to destroy the window while drawing!\n" + 5116 " window=" + this + ", title=" + mWindowAttributes.getTitle()); 5117 } 5118 mHandler.sendEmptyMessage(MSG_DIE); 5119 } 5120 } 5121 5122 void doDie() { 5123 checkThread(); 5124 if (LOCAL_LOGV) Log.v(TAG, "DIE in " + this + " of " + mSurface); 5125 synchronized (this) { 5126 if (mAdded) { 5127 dispatchDetachedFromWindow(); 5128 } 5129 5130 if (mAdded && !mFirst) { 5131 invalidateDisplayLists(); 5132 destroyHardwareRenderer(); 5133 5134 if (mView != null) { 5135 int viewVisibility = mView.getVisibility(); 5136 boolean viewVisibilityChanged = mViewVisibility != viewVisibility; 5137 if (mWindowAttributesChanged || viewVisibilityChanged) { 5138 // If layout params have been changed, first give them 5139 // to the window manager to make sure it has the correct 5140 // animation info. 5141 try { 5142 if ((relayoutWindow(mWindowAttributes, viewVisibility, false) 5143 & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 5144 mWindowSession.finishDrawing(mWindow); 5145 } 5146 } catch (RemoteException e) { 5147 } 5148 } 5149 5150 mSurface.release(); 5151 } 5152 } 5153 5154 mAdded = false; 5155 } 5156 WindowManagerGlobal.getInstance().doRemoveView(this); 5157 } 5158 5159 public void requestUpdateConfiguration(Configuration config) { 5160 Message msg = mHandler.obtainMessage(MSG_UPDATE_CONFIGURATION, config); 5161 mHandler.sendMessage(msg); 5162 } 5163 5164 public void loadSystemProperties() { 5165 mHandler.post(new Runnable() { 5166 @Override 5167 public void run() { 5168 // Profiling 5169 mProfileRendering = SystemProperties.getBoolean(PROPERTY_PROFILE_RENDERING, false); 5170 profileRendering(mAttachInfo.mHasWindowFocus); 5171 5172 // Media (used by sound effects) 5173 mMediaDisabled = SystemProperties.getBoolean(PROPERTY_MEDIA_DISABLED, false); 5174 5175 // Hardware rendering 5176 if (mAttachInfo.mHardwareRenderer != null) { 5177 if (mAttachInfo.mHardwareRenderer.loadSystemProperties(mHolder.getSurface())) { 5178 invalidate(); 5179 } 5180 } 5181 5182 // Layout debugging 5183 boolean layout = SystemProperties.getBoolean(View.DEBUG_LAYOUT_PROPERTY, false); 5184 if (layout != mAttachInfo.mDebugLayout) { 5185 mAttachInfo.mDebugLayout = layout; 5186 if (!mHandler.hasMessages(MSG_INVALIDATE_WORLD)) { 5187 mHandler.sendEmptyMessageDelayed(MSG_INVALIDATE_WORLD, 200); 5188 } 5189 } 5190 } 5191 }); 5192 } 5193 5194 private void destroyHardwareRenderer() { 5195 AttachInfo attachInfo = mAttachInfo; 5196 HardwareRenderer hardwareRenderer = attachInfo.mHardwareRenderer; 5197 5198 if (hardwareRenderer != null) { 5199 if (mView != null) { 5200 hardwareRenderer.destroyHardwareResources(mView); 5201 } 5202 hardwareRenderer.destroy(true); 5203 hardwareRenderer.setRequested(false); 5204 5205 attachInfo.mHardwareRenderer = null; 5206 attachInfo.mHardwareAccelerated = false; 5207 } 5208 } 5209 5210 public void dispatchFinishInputConnection(InputConnection connection) { 5211 Message msg = mHandler.obtainMessage(MSG_FINISH_INPUT_CONNECTION, connection); 5212 mHandler.sendMessage(msg); 5213 } 5214 5215 public void dispatchResized(Rect frame, Rect overscanInsets, Rect contentInsets, 5216 Rect visibleInsets, boolean reportDraw, Configuration newConfig) { 5217 if (DEBUG_LAYOUT) Log.v(TAG, "Resizing " + this + ": frame=" + frame.toShortString() 5218 + " contentInsets=" + contentInsets.toShortString() 5219 + " visibleInsets=" + visibleInsets.toShortString() 5220 + " reportDraw=" + reportDraw); 5221 Message msg = mHandler.obtainMessage(reportDraw ? MSG_RESIZED_REPORT : MSG_RESIZED); 5222 if (mTranslator != null) { 5223 mTranslator.translateRectInScreenToAppWindow(frame); 5224 mTranslator.translateRectInScreenToAppWindow(overscanInsets); 5225 mTranslator.translateRectInScreenToAppWindow(contentInsets); 5226 mTranslator.translateRectInScreenToAppWindow(visibleInsets); 5227 } 5228 SomeArgs args = SomeArgs.obtain(); 5229 final boolean sameProcessCall = (Binder.getCallingPid() == android.os.Process.myPid()); 5230 args.arg1 = sameProcessCall ? new Rect(frame) : frame; 5231 args.arg2 = sameProcessCall ? new Rect(contentInsets) : contentInsets; 5232 args.arg3 = sameProcessCall ? new Rect(visibleInsets) : visibleInsets; 5233 args.arg4 = sameProcessCall && newConfig != null ? new Configuration(newConfig) : newConfig; 5234 args.arg5 = sameProcessCall ? new Rect(overscanInsets) : overscanInsets; 5235 msg.obj = args; 5236 mHandler.sendMessage(msg); 5237 } 5238 5239 public void dispatchMoved(int newX, int newY) { 5240 if (DEBUG_LAYOUT) Log.v(TAG, "Window moved " + this + ": newX=" + newX + " newY=" + newY); 5241 if (mTranslator != null) { 5242 PointF point = new PointF(newX, newY); 5243 mTranslator.translatePointInScreenToAppWindow(point); 5244 newX = (int) (point.x + 0.5); 5245 newY = (int) (point.y + 0.5); 5246 } 5247 Message msg = mHandler.obtainMessage(MSG_WINDOW_MOVED, newX, newY); 5248 mHandler.sendMessage(msg); 5249 } 5250 5251 /** 5252 * Represents a pending input event that is waiting in a queue. 5253 * 5254 * Input events are processed in serial order by the timestamp specified by 5255 * {@link InputEvent#getEventTimeNano()}. In general, the input dispatcher delivers 5256 * one input event to the application at a time and waits for the application 5257 * to finish handling it before delivering the next one. 5258 * 5259 * However, because the application or IME can synthesize and inject multiple 5260 * key events at a time without going through the input dispatcher, we end up 5261 * needing a queue on the application's side. 5262 */ 5263 private static final class QueuedInputEvent { 5264 public static final int FLAG_DELIVER_POST_IME = 1 << 0; 5265 public static final int FLAG_DEFERRED = 1 << 1; 5266 public static final int FLAG_FINISHED = 1 << 2; 5267 public static final int FLAG_FINISHED_HANDLED = 1 << 3; 5268 public static final int FLAG_RESYNTHESIZED = 1 << 4; 5269 5270 public QueuedInputEvent mNext; 5271 5272 public InputEvent mEvent; 5273 public InputEventReceiver mReceiver; 5274 public int mFlags; 5275 5276 public boolean shouldSkipIme() { 5277 if ((mFlags & FLAG_DELIVER_POST_IME) != 0) { 5278 return true; 5279 } 5280 return mEvent instanceof MotionEvent 5281 && mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER); 5282 } 5283 } 5284 5285 private QueuedInputEvent obtainQueuedInputEvent(InputEvent event, 5286 InputEventReceiver receiver, int flags) { 5287 QueuedInputEvent q = mQueuedInputEventPool; 5288 if (q != null) { 5289 mQueuedInputEventPoolSize -= 1; 5290 mQueuedInputEventPool = q.mNext; 5291 q.mNext = null; 5292 } else { 5293 q = new QueuedInputEvent(); 5294 } 5295 5296 q.mEvent = event; 5297 q.mReceiver = receiver; 5298 q.mFlags = flags; 5299 return q; 5300 } 5301 5302 private void recycleQueuedInputEvent(QueuedInputEvent q) { 5303 q.mEvent = null; 5304 q.mReceiver = null; 5305 5306 if (mQueuedInputEventPoolSize < MAX_QUEUED_INPUT_EVENT_POOL_SIZE) { 5307 mQueuedInputEventPoolSize += 1; 5308 q.mNext = mQueuedInputEventPool; 5309 mQueuedInputEventPool = q; 5310 } 5311 } 5312 5313 void enqueueInputEvent(InputEvent event) { 5314 enqueueInputEvent(event, null, 0, false); 5315 } 5316 5317 void enqueueInputEvent(InputEvent event, 5318 InputEventReceiver receiver, int flags, boolean processImmediately) { 5319 QueuedInputEvent q = obtainQueuedInputEvent(event, receiver, flags); 5320 5321 // Always enqueue the input event in order, regardless of its time stamp. 5322 // We do this because the application or the IME may inject key events 5323 // in response to touch events and we want to ensure that the injected keys 5324 // are processed in the order they were received and we cannot trust that 5325 // the time stamp of injected events are monotonic. 5326 QueuedInputEvent last = mPendingInputEventTail; 5327 if (last == null) { 5328 mPendingInputEventHead = q; 5329 mPendingInputEventTail = q; 5330 } else { 5331 last.mNext = q; 5332 mPendingInputEventTail = q; 5333 } 5334 mPendingInputEventCount += 1; 5335 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 5336 mPendingInputEventCount); 5337 5338 if (processImmediately) { 5339 doProcessInputEvents(); 5340 } else { 5341 scheduleProcessInputEvents(); 5342 } 5343 } 5344 5345 private void scheduleProcessInputEvents() { 5346 if (!mProcessInputEventsScheduled) { 5347 mProcessInputEventsScheduled = true; 5348 Message msg = mHandler.obtainMessage(MSG_PROCESS_INPUT_EVENTS); 5349 msg.setAsynchronous(true); 5350 mHandler.sendMessage(msg); 5351 } 5352 } 5353 5354 void doProcessInputEvents() { 5355 // Deliver all pending input events in the queue. 5356 while (mPendingInputEventHead != null) { 5357 QueuedInputEvent q = mPendingInputEventHead; 5358 mPendingInputEventHead = q.mNext; 5359 if (mPendingInputEventHead == null) { 5360 mPendingInputEventTail = null; 5361 } 5362 q.mNext = null; 5363 5364 mPendingInputEventCount -= 1; 5365 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 5366 mPendingInputEventCount); 5367 5368 deliverInputEvent(q); 5369 } 5370 5371 // We are done processing all input events that we can process right now 5372 // so we can clear the pending flag immediately. 5373 if (mProcessInputEventsScheduled) { 5374 mProcessInputEventsScheduled = false; 5375 mHandler.removeMessages(MSG_PROCESS_INPUT_EVENTS); 5376 } 5377 } 5378 5379 private void deliverInputEvent(QueuedInputEvent q) { 5380 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "deliverInputEvent"); 5381 try { 5382 if (mInputEventConsistencyVerifier != null) { 5383 mInputEventConsistencyVerifier.onInputEvent(q.mEvent, 0); 5384 } 5385 5386 InputStage stage = q.shouldSkipIme() ? mFirstPostImeInputStage : mFirstInputStage; 5387 if (stage != null) { 5388 stage.deliver(q); 5389 } else { 5390 finishInputEvent(q); 5391 } 5392 } finally { 5393 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 5394 } 5395 } 5396 5397 private void finishInputEvent(QueuedInputEvent q) { 5398 if (q.mReceiver != null) { 5399 boolean handled = (q.mFlags & QueuedInputEvent.FLAG_FINISHED_HANDLED) != 0; 5400 q.mReceiver.finishInputEvent(q.mEvent, handled); 5401 } else { 5402 q.mEvent.recycleIfNeededAfterDispatch(); 5403 } 5404 5405 recycleQueuedInputEvent(q); 5406 } 5407 5408 static boolean isTerminalInputEvent(InputEvent event) { 5409 if (event instanceof KeyEvent) { 5410 final KeyEvent keyEvent = (KeyEvent)event; 5411 return keyEvent.getAction() == KeyEvent.ACTION_UP; 5412 } else { 5413 final MotionEvent motionEvent = (MotionEvent)event; 5414 final int action = motionEvent.getAction(); 5415 return action == MotionEvent.ACTION_UP 5416 || action == MotionEvent.ACTION_CANCEL 5417 || action == MotionEvent.ACTION_HOVER_EXIT; 5418 } 5419 } 5420 5421 void scheduleConsumeBatchedInput() { 5422 if (!mConsumeBatchedInputScheduled) { 5423 mConsumeBatchedInputScheduled = true; 5424 mChoreographer.postCallback(Choreographer.CALLBACK_INPUT, 5425 mConsumedBatchedInputRunnable, null); 5426 } 5427 } 5428 5429 void unscheduleConsumeBatchedInput() { 5430 if (mConsumeBatchedInputScheduled) { 5431 mConsumeBatchedInputScheduled = false; 5432 mChoreographer.removeCallbacks(Choreographer.CALLBACK_INPUT, 5433 mConsumedBatchedInputRunnable, null); 5434 } 5435 } 5436 5437 void doConsumeBatchedInput(long frameTimeNanos) { 5438 if (mConsumeBatchedInputScheduled) { 5439 mConsumeBatchedInputScheduled = false; 5440 if (mInputEventReceiver != null) { 5441 mInputEventReceiver.consumeBatchedInputEvents(frameTimeNanos); 5442 } 5443 doProcessInputEvents(); 5444 } 5445 } 5446 5447 final class TraversalRunnable implements Runnable { 5448 @Override 5449 public void run() { 5450 doTraversal(); 5451 } 5452 } 5453 final TraversalRunnable mTraversalRunnable = new TraversalRunnable(); 5454 5455 final class WindowInputEventReceiver extends InputEventReceiver { 5456 public WindowInputEventReceiver(InputChannel inputChannel, Looper looper) { 5457 super(inputChannel, looper); 5458 } 5459 5460 @Override 5461 public void onInputEvent(InputEvent event) { 5462 enqueueInputEvent(event, this, 0, true); 5463 } 5464 5465 @Override 5466 public void onBatchedInputEventPending() { 5467 scheduleConsumeBatchedInput(); 5468 } 5469 5470 @Override 5471 public void dispose() { 5472 unscheduleConsumeBatchedInput(); 5473 super.dispose(); 5474 } 5475 } 5476 WindowInputEventReceiver mInputEventReceiver; 5477 5478 final class ConsumeBatchedInputRunnable implements Runnable { 5479 @Override 5480 public void run() { 5481 doConsumeBatchedInput(mChoreographer.getFrameTimeNanos()); 5482 } 5483 } 5484 final ConsumeBatchedInputRunnable mConsumedBatchedInputRunnable = 5485 new ConsumeBatchedInputRunnable(); 5486 boolean mConsumeBatchedInputScheduled; 5487 5488 final class InvalidateOnAnimationRunnable implements Runnable { 5489 private boolean mPosted; 5490 private ArrayList<View> mViews = new ArrayList<View>(); 5491 private ArrayList<AttachInfo.InvalidateInfo> mViewRects = 5492 new ArrayList<AttachInfo.InvalidateInfo>(); 5493 private View[] mTempViews; 5494 private AttachInfo.InvalidateInfo[] mTempViewRects; 5495 5496 public void addView(View view) { 5497 synchronized (this) { 5498 mViews.add(view); 5499 postIfNeededLocked(); 5500 } 5501 } 5502 5503 public void addViewRect(AttachInfo.InvalidateInfo info) { 5504 synchronized (this) { 5505 mViewRects.add(info); 5506 postIfNeededLocked(); 5507 } 5508 } 5509 5510 public void removeView(View view) { 5511 synchronized (this) { 5512 mViews.remove(view); 5513 5514 for (int i = mViewRects.size(); i-- > 0; ) { 5515 AttachInfo.InvalidateInfo info = mViewRects.get(i); 5516 if (info.target == view) { 5517 mViewRects.remove(i); 5518 info.recycle(); 5519 } 5520 } 5521 5522 if (mPosted && mViews.isEmpty() && mViewRects.isEmpty()) { 5523 mChoreographer.removeCallbacks(Choreographer.CALLBACK_ANIMATION, this, null); 5524 mPosted = false; 5525 } 5526 } 5527 } 5528 5529 @Override 5530 public void run() { 5531 final int viewCount; 5532 final int viewRectCount; 5533 synchronized (this) { 5534 mPosted = false; 5535 5536 viewCount = mViews.size(); 5537 if (viewCount != 0) { 5538 mTempViews = mViews.toArray(mTempViews != null 5539 ? mTempViews : new View[viewCount]); 5540 mViews.clear(); 5541 } 5542 5543 viewRectCount = mViewRects.size(); 5544 if (viewRectCount != 0) { 5545 mTempViewRects = mViewRects.toArray(mTempViewRects != null 5546 ? mTempViewRects : new AttachInfo.InvalidateInfo[viewRectCount]); 5547 mViewRects.clear(); 5548 } 5549 } 5550 5551 for (int i = 0; i < viewCount; i++) { 5552 mTempViews[i].invalidate(); 5553 mTempViews[i] = null; 5554 } 5555 5556 for (int i = 0; i < viewRectCount; i++) { 5557 final View.AttachInfo.InvalidateInfo info = mTempViewRects[i]; 5558 info.target.invalidate(info.left, info.top, info.right, info.bottom); 5559 info.recycle(); 5560 } 5561 } 5562 5563 private void postIfNeededLocked() { 5564 if (!mPosted) { 5565 mChoreographer.postCallback(Choreographer.CALLBACK_ANIMATION, this, null); 5566 mPosted = true; 5567 } 5568 } 5569 } 5570 final InvalidateOnAnimationRunnable mInvalidateOnAnimationRunnable = 5571 new InvalidateOnAnimationRunnable(); 5572 5573 public void dispatchInvalidateDelayed(View view, long delayMilliseconds) { 5574 Message msg = mHandler.obtainMessage(MSG_INVALIDATE, view); 5575 mHandler.sendMessageDelayed(msg, delayMilliseconds); 5576 } 5577 5578 public void dispatchInvalidateRectDelayed(AttachInfo.InvalidateInfo info, 5579 long delayMilliseconds) { 5580 final Message msg = mHandler.obtainMessage(MSG_INVALIDATE_RECT, info); 5581 mHandler.sendMessageDelayed(msg, delayMilliseconds); 5582 } 5583 5584 public void dispatchInvalidateOnAnimation(View view) { 5585 mInvalidateOnAnimationRunnable.addView(view); 5586 } 5587 5588 public void dispatchInvalidateRectOnAnimation(AttachInfo.InvalidateInfo info) { 5589 mInvalidateOnAnimationRunnable.addViewRect(info); 5590 } 5591 5592 public void enqueueDisplayList(DisplayList displayList) { 5593 mDisplayLists.add(displayList); 5594 } 5595 5596 public void cancelInvalidate(View view) { 5597 mHandler.removeMessages(MSG_INVALIDATE, view); 5598 // fixme: might leak the AttachInfo.InvalidateInfo objects instead of returning 5599 // them to the pool 5600 mHandler.removeMessages(MSG_INVALIDATE_RECT, view); 5601 mInvalidateOnAnimationRunnable.removeView(view); 5602 } 5603 5604 public void dispatchKey(KeyEvent event) { 5605 Message msg = mHandler.obtainMessage(MSG_DISPATCH_KEY, event); 5606 msg.setAsynchronous(true); 5607 mHandler.sendMessage(msg); 5608 } 5609 5610 public void dispatchKeyFromIme(KeyEvent event) { 5611 Message msg = mHandler.obtainMessage(MSG_DISPATCH_KEY_FROM_IME, event); 5612 msg.setAsynchronous(true); 5613 mHandler.sendMessage(msg); 5614 } 5615 5616 public void dispatchUnhandledKey(KeyEvent event) { 5617 if ((event.getFlags() & KeyEvent.FLAG_FALLBACK) == 0) { 5618 final KeyCharacterMap kcm = event.getKeyCharacterMap(); 5619 final int keyCode = event.getKeyCode(); 5620 final int metaState = event.getMetaState(); 5621 5622 // Check for fallback actions specified by the key character map. 5623 KeyCharacterMap.FallbackAction fallbackAction = 5624 kcm.getFallbackAction(keyCode, metaState); 5625 if (fallbackAction != null) { 5626 final int flags = event.getFlags() | KeyEvent.FLAG_FALLBACK; 5627 KeyEvent fallbackEvent = KeyEvent.obtain( 5628 event.getDownTime(), event.getEventTime(), 5629 event.getAction(), fallbackAction.keyCode, 5630 event.getRepeatCount(), fallbackAction.metaState, 5631 event.getDeviceId(), event.getScanCode(), 5632 flags, event.getSource(), null); 5633 fallbackAction.recycle(); 5634 5635 dispatchKey(fallbackEvent); 5636 } 5637 } 5638 } 5639 5640 public void dispatchAppVisibility(boolean visible) { 5641 Message msg = mHandler.obtainMessage(MSG_DISPATCH_APP_VISIBILITY); 5642 msg.arg1 = visible ? 1 : 0; 5643 mHandler.sendMessage(msg); 5644 } 5645 5646 public void dispatchScreenStateChange(boolean on) { 5647 Message msg = mHandler.obtainMessage(MSG_DISPATCH_SCREEN_STATE); 5648 msg.arg1 = on ? 1 : 0; 5649 mHandler.sendMessage(msg); 5650 } 5651 5652 public void dispatchGetNewSurface() { 5653 Message msg = mHandler.obtainMessage(MSG_DISPATCH_GET_NEW_SURFACE); 5654 mHandler.sendMessage(msg); 5655 } 5656 5657 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 5658 Message msg = Message.obtain(); 5659 msg.what = MSG_WINDOW_FOCUS_CHANGED; 5660 msg.arg1 = hasFocus ? 1 : 0; 5661 msg.arg2 = inTouchMode ? 1 : 0; 5662 mHandler.sendMessage(msg); 5663 } 5664 5665 public void dispatchCloseSystemDialogs(String reason) { 5666 Message msg = Message.obtain(); 5667 msg.what = MSG_CLOSE_SYSTEM_DIALOGS; 5668 msg.obj = reason; 5669 mHandler.sendMessage(msg); 5670 } 5671 5672 public void dispatchDragEvent(DragEvent event) { 5673 final int what; 5674 if (event.getAction() == DragEvent.ACTION_DRAG_LOCATION) { 5675 what = MSG_DISPATCH_DRAG_LOCATION_EVENT; 5676 mHandler.removeMessages(what); 5677 } else { 5678 what = MSG_DISPATCH_DRAG_EVENT; 5679 } 5680 Message msg = mHandler.obtainMessage(what, event); 5681 mHandler.sendMessage(msg); 5682 } 5683 5684 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 5685 int localValue, int localChanges) { 5686 SystemUiVisibilityInfo args = new SystemUiVisibilityInfo(); 5687 args.seq = seq; 5688 args.globalVisibility = globalVisibility; 5689 args.localValue = localValue; 5690 args.localChanges = localChanges; 5691 mHandler.sendMessage(mHandler.obtainMessage(MSG_DISPATCH_SYSTEM_UI_VISIBILITY, args)); 5692 } 5693 5694 public void dispatchDoneAnimating() { 5695 mHandler.sendEmptyMessage(MSG_DISPATCH_DONE_ANIMATING); 5696 } 5697 5698 public void dispatchCheckFocus() { 5699 if (!mHandler.hasMessages(MSG_CHECK_FOCUS)) { 5700 // This will result in a call to checkFocus() below. 5701 mHandler.sendEmptyMessage(MSG_CHECK_FOCUS); 5702 } 5703 } 5704 5705 /** 5706 * Post a callback to send a 5707 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 5708 * This event is send at most once every 5709 * {@link ViewConfiguration#getSendRecurringAccessibilityEventsInterval()}. 5710 */ 5711 private void postSendWindowContentChangedCallback(View source) { 5712 if (mSendWindowContentChangedAccessibilityEvent == null) { 5713 mSendWindowContentChangedAccessibilityEvent = 5714 new SendWindowContentChangedAccessibilityEvent(); 5715 } 5716 View oldSource = mSendWindowContentChangedAccessibilityEvent.mSource; 5717 if (oldSource == null) { 5718 mSendWindowContentChangedAccessibilityEvent.mSource = source; 5719 mHandler.postDelayed(mSendWindowContentChangedAccessibilityEvent, 5720 ViewConfiguration.getSendRecurringAccessibilityEventsInterval()); 5721 } else { 5722 mSendWindowContentChangedAccessibilityEvent.mSource = 5723 getCommonPredecessor(oldSource, source); 5724 } 5725 } 5726 5727 /** 5728 * Remove a posted callback to send a 5729 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 5730 */ 5731 private void removeSendWindowContentChangedCallback() { 5732 if (mSendWindowContentChangedAccessibilityEvent != null) { 5733 mHandler.removeCallbacks(mSendWindowContentChangedAccessibilityEvent); 5734 } 5735 } 5736 5737 public boolean showContextMenuForChild(View originalView) { 5738 return false; 5739 } 5740 5741 public ActionMode startActionModeForChild(View originalView, ActionMode.Callback callback) { 5742 return null; 5743 } 5744 5745 public void createContextMenu(ContextMenu menu) { 5746 } 5747 5748 public void childDrawableStateChanged(View child) { 5749 } 5750 5751 public boolean requestSendAccessibilityEvent(View child, AccessibilityEvent event) { 5752 if (mView == null) { 5753 return false; 5754 } 5755 // Intercept accessibility focus events fired by virtual nodes to keep 5756 // track of accessibility focus position in such nodes. 5757 final int eventType = event.getEventType(); 5758 switch (eventType) { 5759 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUSED: { 5760 final long sourceNodeId = event.getSourceNodeId(); 5761 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 5762 sourceNodeId); 5763 View source = mView.findViewByAccessibilityId(accessibilityViewId); 5764 if (source != null) { 5765 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 5766 if (provider != null) { 5767 AccessibilityNodeInfo node = provider.createAccessibilityNodeInfo( 5768 AccessibilityNodeInfo.getVirtualDescendantId(sourceNodeId)); 5769 setAccessibilityFocus(source, node); 5770 } 5771 } 5772 } break; 5773 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUS_CLEARED: { 5774 final long sourceNodeId = event.getSourceNodeId(); 5775 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 5776 sourceNodeId); 5777 View source = mView.findViewByAccessibilityId(accessibilityViewId); 5778 if (source != null) { 5779 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 5780 if (provider != null) { 5781 setAccessibilityFocus(null, null); 5782 } 5783 } 5784 } break; 5785 } 5786 mAccessibilityManager.sendAccessibilityEvent(event); 5787 return true; 5788 } 5789 5790 @Override 5791 public void childAccessibilityStateChanged(View child) { 5792 postSendWindowContentChangedCallback(child); 5793 } 5794 5795 @Override 5796 public boolean canResolveLayoutDirection() { 5797 return true; 5798 } 5799 5800 @Override 5801 public boolean isLayoutDirectionResolved() { 5802 return true; 5803 } 5804 5805 @Override 5806 public int getLayoutDirection() { 5807 return View.LAYOUT_DIRECTION_RESOLVED_DEFAULT; 5808 } 5809 5810 @Override 5811 public boolean canResolveTextDirection() { 5812 return true; 5813 } 5814 5815 @Override 5816 public boolean isTextDirectionResolved() { 5817 return true; 5818 } 5819 5820 @Override 5821 public int getTextDirection() { 5822 return View.TEXT_DIRECTION_RESOLVED_DEFAULT; 5823 } 5824 5825 @Override 5826 public boolean canResolveTextAlignment() { 5827 return true; 5828 } 5829 5830 @Override 5831 public boolean isTextAlignmentResolved() { 5832 return true; 5833 } 5834 5835 @Override 5836 public int getTextAlignment() { 5837 return View.TEXT_ALIGNMENT_RESOLVED_DEFAULT; 5838 } 5839 5840 private View getCommonPredecessor(View first, View second) { 5841 if (mAttachInfo != null) { 5842 if (mTempHashSet == null) { 5843 mTempHashSet = new HashSet<View>(); 5844 } 5845 HashSet<View> seen = mTempHashSet; 5846 seen.clear(); 5847 View firstCurrent = first; 5848 while (firstCurrent != null) { 5849 seen.add(firstCurrent); 5850 ViewParent firstCurrentParent = firstCurrent.mParent; 5851 if (firstCurrentParent instanceof View) { 5852 firstCurrent = (View) firstCurrentParent; 5853 } else { 5854 firstCurrent = null; 5855 } 5856 } 5857 View secondCurrent = second; 5858 while (secondCurrent != null) { 5859 if (seen.contains(secondCurrent)) { 5860 seen.clear(); 5861 return secondCurrent; 5862 } 5863 ViewParent secondCurrentParent = secondCurrent.mParent; 5864 if (secondCurrentParent instanceof View) { 5865 secondCurrent = (View) secondCurrentParent; 5866 } else { 5867 secondCurrent = null; 5868 } 5869 } 5870 seen.clear(); 5871 } 5872 return null; 5873 } 5874 5875 void checkThread() { 5876 if (mThread != Thread.currentThread()) { 5877 throw new CalledFromWrongThreadException( 5878 "Only the original thread that created a view hierarchy can touch its views."); 5879 } 5880 } 5881 5882 public void requestDisallowInterceptTouchEvent(boolean disallowIntercept) { 5883 // ViewAncestor never intercepts touch event, so this can be a no-op 5884 } 5885 5886 public boolean requestChildRectangleOnScreen(View child, Rect rectangle, boolean immediate) { 5887 final boolean scrolled = scrollToRectOrFocus(rectangle, immediate); 5888 if (rectangle != null) { 5889 mTempRect.set(rectangle); 5890 mTempRect.offset(0, -mCurScrollY); 5891 mTempRect.offset(mAttachInfo.mWindowLeft, mAttachInfo.mWindowTop); 5892 try { 5893 mWindowSession.onRectangleOnScreenRequested(mWindow, mTempRect, immediate); 5894 } catch (RemoteException re) { 5895 /* ignore */ 5896 } 5897 } 5898 return scrolled; 5899 } 5900 5901 public void childHasTransientStateChanged(View child, boolean hasTransientState) { 5902 // Do nothing. 5903 } 5904 5905 class TakenSurfaceHolder extends BaseSurfaceHolder { 5906 @Override 5907 public boolean onAllowLockCanvas() { 5908 return mDrawingAllowed; 5909 } 5910 5911 @Override 5912 public void onRelayoutContainer() { 5913 // Not currently interesting -- from changing between fixed and layout size. 5914 } 5915 5916 public void setFormat(int format) { 5917 ((RootViewSurfaceTaker)mView).setSurfaceFormat(format); 5918 } 5919 5920 public void setType(int type) { 5921 ((RootViewSurfaceTaker)mView).setSurfaceType(type); 5922 } 5923 5924 @Override 5925 public void onUpdateSurface() { 5926 // We take care of format and type changes on our own. 5927 throw new IllegalStateException("Shouldn't be here"); 5928 } 5929 5930 public boolean isCreating() { 5931 return mIsCreating; 5932 } 5933 5934 @Override 5935 public void setFixedSize(int width, int height) { 5936 throw new UnsupportedOperationException( 5937 "Currently only support sizing from layout"); 5938 } 5939 5940 public void setKeepScreenOn(boolean screenOn) { 5941 ((RootViewSurfaceTaker)mView).setSurfaceKeepScreenOn(screenOn); 5942 } 5943 } 5944 5945 static class W extends IWindow.Stub { 5946 private final WeakReference<ViewRootImpl> mViewAncestor; 5947 private final IWindowSession mWindowSession; 5948 5949 W(ViewRootImpl viewAncestor) { 5950 mViewAncestor = new WeakReference<ViewRootImpl>(viewAncestor); 5951 mWindowSession = viewAncestor.mWindowSession; 5952 } 5953 5954 public void resized(Rect frame, Rect overscanInsets, Rect contentInsets, 5955 Rect visibleInsets, boolean reportDraw, Configuration newConfig) { 5956 final ViewRootImpl viewAncestor = mViewAncestor.get(); 5957 if (viewAncestor != null) { 5958 viewAncestor.dispatchResized(frame, overscanInsets, contentInsets, 5959 visibleInsets, reportDraw, newConfig); 5960 } 5961 } 5962 5963 @Override 5964 public void moved(int newX, int newY) { 5965 final ViewRootImpl viewAncestor = mViewAncestor.get(); 5966 if (viewAncestor != null) { 5967 viewAncestor.dispatchMoved(newX, newY); 5968 } 5969 } 5970 5971 public void dispatchAppVisibility(boolean visible) { 5972 final ViewRootImpl viewAncestor = mViewAncestor.get(); 5973 if (viewAncestor != null) { 5974 viewAncestor.dispatchAppVisibility(visible); 5975 } 5976 } 5977 5978 public void dispatchScreenState(boolean on) { 5979 final ViewRootImpl viewAncestor = mViewAncestor.get(); 5980 if (viewAncestor != null) { 5981 viewAncestor.dispatchScreenStateChange(on); 5982 } 5983 } 5984 5985 public void dispatchGetNewSurface() { 5986 final ViewRootImpl viewAncestor = mViewAncestor.get(); 5987 if (viewAncestor != null) { 5988 viewAncestor.dispatchGetNewSurface(); 5989 } 5990 } 5991 5992 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 5993 final ViewRootImpl viewAncestor = mViewAncestor.get(); 5994 if (viewAncestor != null) { 5995 viewAncestor.windowFocusChanged(hasFocus, inTouchMode); 5996 } 5997 } 5998 5999 private static int checkCallingPermission(String permission) { 6000 try { 6001 return ActivityManagerNative.getDefault().checkPermission( 6002 permission, Binder.getCallingPid(), Binder.getCallingUid()); 6003 } catch (RemoteException e) { 6004 return PackageManager.PERMISSION_DENIED; 6005 } 6006 } 6007 6008 public void executeCommand(String command, String parameters, ParcelFileDescriptor out) { 6009 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6010 if (viewAncestor != null) { 6011 final View view = viewAncestor.mView; 6012 if (view != null) { 6013 if (checkCallingPermission(Manifest.permission.DUMP) != 6014 PackageManager.PERMISSION_GRANTED) { 6015 throw new SecurityException("Insufficient permissions to invoke" 6016 + " executeCommand() from pid=" + Binder.getCallingPid() 6017 + ", uid=" + Binder.getCallingUid()); 6018 } 6019 6020 OutputStream clientStream = null; 6021 try { 6022 clientStream = new ParcelFileDescriptor.AutoCloseOutputStream(out); 6023 ViewDebug.dispatchCommand(view, command, parameters, clientStream); 6024 } catch (IOException e) { 6025 e.printStackTrace(); 6026 } finally { 6027 if (clientStream != null) { 6028 try { 6029 clientStream.close(); 6030 } catch (IOException e) { 6031 e.printStackTrace(); 6032 } 6033 } 6034 } 6035 } 6036 } 6037 } 6038 6039 public void closeSystemDialogs(String reason) { 6040 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6041 if (viewAncestor != null) { 6042 viewAncestor.dispatchCloseSystemDialogs(reason); 6043 } 6044 } 6045 6046 public void dispatchWallpaperOffsets(float x, float y, float xStep, float yStep, 6047 boolean sync) { 6048 if (sync) { 6049 try { 6050 mWindowSession.wallpaperOffsetsComplete(asBinder()); 6051 } catch (RemoteException e) { 6052 } 6053 } 6054 } 6055 6056 public void dispatchWallpaperCommand(String action, int x, int y, 6057 int z, Bundle extras, boolean sync) { 6058 if (sync) { 6059 try { 6060 mWindowSession.wallpaperCommandComplete(asBinder(), null); 6061 } catch (RemoteException e) { 6062 } 6063 } 6064 } 6065 6066 /* Drag/drop */ 6067 public void dispatchDragEvent(DragEvent event) { 6068 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6069 if (viewAncestor != null) { 6070 viewAncestor.dispatchDragEvent(event); 6071 } 6072 } 6073 6074 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 6075 int localValue, int localChanges) { 6076 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6077 if (viewAncestor != null) { 6078 viewAncestor.dispatchSystemUiVisibilityChanged(seq, globalVisibility, 6079 localValue, localChanges); 6080 } 6081 } 6082 6083 public void doneAnimating() { 6084 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6085 if (viewAncestor != null) { 6086 viewAncestor.dispatchDoneAnimating(); 6087 } 6088 } 6089 } 6090 6091 public static final class CalledFromWrongThreadException extends AndroidRuntimeException { 6092 public CalledFromWrongThreadException(String msg) { 6093 super(msg); 6094 } 6095 } 6096 6097 private SurfaceHolder mHolder = new SurfaceHolder() { 6098 // we only need a SurfaceHolder for opengl. it would be nice 6099 // to implement everything else though, especially the callback 6100 // support (opengl doesn't make use of it right now, but eventually 6101 // will). 6102 public Surface getSurface() { 6103 return mSurface; 6104 } 6105 6106 public boolean isCreating() { 6107 return false; 6108 } 6109 6110 public void addCallback(Callback callback) { 6111 } 6112 6113 public void removeCallback(Callback callback) { 6114 } 6115 6116 public void setFixedSize(int width, int height) { 6117 } 6118 6119 public void setSizeFromLayout() { 6120 } 6121 6122 public void setFormat(int format) { 6123 } 6124 6125 public void setType(int type) { 6126 } 6127 6128 public void setKeepScreenOn(boolean screenOn) { 6129 } 6130 6131 public Canvas lockCanvas() { 6132 return null; 6133 } 6134 6135 public Canvas lockCanvas(Rect dirty) { 6136 return null; 6137 } 6138 6139 public void unlockCanvasAndPost(Canvas canvas) { 6140 } 6141 public Rect getSurfaceFrame() { 6142 return null; 6143 } 6144 }; 6145 6146 static RunQueue getRunQueue() { 6147 RunQueue rq = sRunQueues.get(); 6148 if (rq != null) { 6149 return rq; 6150 } 6151 rq = new RunQueue(); 6152 sRunQueues.set(rq); 6153 return rq; 6154 } 6155 6156 /** 6157 * The run queue is used to enqueue pending work from Views when no Handler is 6158 * attached. The work is executed during the next call to performTraversals on 6159 * the thread. 6160 * @hide 6161 */ 6162 static final class RunQueue { 6163 private final ArrayList<HandlerAction> mActions = new ArrayList<HandlerAction>(); 6164 6165 void post(Runnable action) { 6166 postDelayed(action, 0); 6167 } 6168 6169 void postDelayed(Runnable action, long delayMillis) { 6170 HandlerAction handlerAction = new HandlerAction(); 6171 handlerAction.action = action; 6172 handlerAction.delay = delayMillis; 6173 6174 synchronized (mActions) { 6175 mActions.add(handlerAction); 6176 } 6177 } 6178 6179 void removeCallbacks(Runnable action) { 6180 final HandlerAction handlerAction = new HandlerAction(); 6181 handlerAction.action = action; 6182 6183 synchronized (mActions) { 6184 final ArrayList<HandlerAction> actions = mActions; 6185 6186 while (actions.remove(handlerAction)) { 6187 // Keep going 6188 } 6189 } 6190 } 6191 6192 void executeActions(Handler handler) { 6193 synchronized (mActions) { 6194 final ArrayList<HandlerAction> actions = mActions; 6195 final int count = actions.size(); 6196 6197 for (int i = 0; i < count; i++) { 6198 final HandlerAction handlerAction = actions.get(i); 6199 handler.postDelayed(handlerAction.action, handlerAction.delay); 6200 } 6201 6202 actions.clear(); 6203 } 6204 } 6205 6206 private static class HandlerAction { 6207 Runnable action; 6208 long delay; 6209 6210 @Override 6211 public boolean equals(Object o) { 6212 if (this == o) return true; 6213 if (o == null || getClass() != o.getClass()) return false; 6214 6215 HandlerAction that = (HandlerAction) o; 6216 return !(action != null ? !action.equals(that.action) : that.action != null); 6217 6218 } 6219 6220 @Override 6221 public int hashCode() { 6222 int result = action != null ? action.hashCode() : 0; 6223 result = 31 * result + (int) (delay ^ (delay >>> 32)); 6224 return result; 6225 } 6226 } 6227 } 6228 6229 /** 6230 * Class for managing the accessibility interaction connection 6231 * based on the global accessibility state. 6232 */ 6233 final class AccessibilityInteractionConnectionManager 6234 implements AccessibilityStateChangeListener { 6235 public void onAccessibilityStateChanged(boolean enabled) { 6236 if (enabled) { 6237 ensureConnection(); 6238 if (mAttachInfo != null && mAttachInfo.mHasWindowFocus) { 6239 mView.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 6240 View focusedView = mView.findFocus(); 6241 if (focusedView != null && focusedView != mView) { 6242 focusedView.sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_FOCUSED); 6243 } 6244 } 6245 } else { 6246 ensureNoConnection(); 6247 mHandler.obtainMessage(MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST).sendToTarget(); 6248 } 6249 } 6250 6251 public void ensureConnection() { 6252 if (mAttachInfo != null) { 6253 final boolean registered = 6254 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED; 6255 if (!registered) { 6256 mAttachInfo.mAccessibilityWindowId = 6257 mAccessibilityManager.addAccessibilityInteractionConnection(mWindow, 6258 new AccessibilityInteractionConnection(ViewRootImpl.this)); 6259 } 6260 } 6261 } 6262 6263 public void ensureNoConnection() { 6264 final boolean registered = 6265 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED; 6266 if (registered) { 6267 mAttachInfo.mAccessibilityWindowId = AccessibilityNodeInfo.UNDEFINED; 6268 mAccessibilityManager.removeAccessibilityInteractionConnection(mWindow); 6269 } 6270 } 6271 } 6272 6273 /** 6274 * This class is an interface this ViewAncestor provides to the 6275 * AccessibilityManagerService to the latter can interact with 6276 * the view hierarchy in this ViewAncestor. 6277 */ 6278 static final class AccessibilityInteractionConnection 6279 extends IAccessibilityInteractionConnection.Stub { 6280 private final WeakReference<ViewRootImpl> mViewRootImpl; 6281 6282 AccessibilityInteractionConnection(ViewRootImpl viewRootImpl) { 6283 mViewRootImpl = new WeakReference<ViewRootImpl>(viewRootImpl); 6284 } 6285 6286 @Override 6287 public void findAccessibilityNodeInfoByAccessibilityId(long accessibilityNodeId, 6288 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 6289 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6290 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6291 if (viewRootImpl != null && viewRootImpl.mView != null) { 6292 viewRootImpl.getAccessibilityInteractionController() 6293 .findAccessibilityNodeInfoByAccessibilityIdClientThread(accessibilityNodeId, 6294 interactionId, callback, flags, interrogatingPid, interrogatingTid, 6295 spec); 6296 } else { 6297 // We cannot make the call and notify the caller so it does not wait. 6298 try { 6299 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 6300 } catch (RemoteException re) { 6301 /* best effort - ignore */ 6302 } 6303 } 6304 } 6305 6306 @Override 6307 public void performAccessibilityAction(long accessibilityNodeId, int action, 6308 Bundle arguments, int interactionId, 6309 IAccessibilityInteractionConnectionCallback callback, int flags, 6310 int interogatingPid, long interrogatingTid) { 6311 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6312 if (viewRootImpl != null && viewRootImpl.mView != null) { 6313 viewRootImpl.getAccessibilityInteractionController() 6314 .performAccessibilityActionClientThread(accessibilityNodeId, action, arguments, 6315 interactionId, callback, flags, interogatingPid, interrogatingTid); 6316 } else { 6317 // We cannot make the call and notify the caller so it does not wait. 6318 try { 6319 callback.setPerformAccessibilityActionResult(false, interactionId); 6320 } catch (RemoteException re) { 6321 /* best effort - ignore */ 6322 } 6323 } 6324 } 6325 6326 @Override 6327 public void findAccessibilityNodeInfosByViewId(long accessibilityNodeId, 6328 String viewId, int interactionId, 6329 IAccessibilityInteractionConnectionCallback callback, int flags, 6330 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6331 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6332 if (viewRootImpl != null && viewRootImpl.mView != null) { 6333 viewRootImpl.getAccessibilityInteractionController() 6334 .findAccessibilityNodeInfosByViewIdClientThread(accessibilityNodeId, 6335 viewId, interactionId, callback, flags, interrogatingPid, 6336 interrogatingTid, spec); 6337 } else { 6338 // We cannot make the call and notify the caller so it does not wait. 6339 try { 6340 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6341 } catch (RemoteException re) { 6342 /* best effort - ignore */ 6343 } 6344 } 6345 } 6346 6347 @Override 6348 public void findAccessibilityNodeInfosByText(long accessibilityNodeId, String text, 6349 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 6350 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6351 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6352 if (viewRootImpl != null && viewRootImpl.mView != null) { 6353 viewRootImpl.getAccessibilityInteractionController() 6354 .findAccessibilityNodeInfosByTextClientThread(accessibilityNodeId, text, 6355 interactionId, callback, flags, interrogatingPid, interrogatingTid, 6356 spec); 6357 } else { 6358 // We cannot make the call and notify the caller so it does not wait. 6359 try { 6360 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 6361 } catch (RemoteException re) { 6362 /* best effort - ignore */ 6363 } 6364 } 6365 } 6366 6367 @Override 6368 public void findFocus(long accessibilityNodeId, int focusType, int interactionId, 6369 IAccessibilityInteractionConnectionCallback callback, int flags, 6370 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6371 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6372 if (viewRootImpl != null && viewRootImpl.mView != null) { 6373 viewRootImpl.getAccessibilityInteractionController() 6374 .findFocusClientThread(accessibilityNodeId, focusType, interactionId, callback, 6375 flags, interrogatingPid, interrogatingTid, spec); 6376 } else { 6377 // We cannot make the call and notify the caller so it does not wait. 6378 try { 6379 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6380 } catch (RemoteException re) { 6381 /* best effort - ignore */ 6382 } 6383 } 6384 } 6385 6386 @Override 6387 public void focusSearch(long accessibilityNodeId, int direction, int interactionId, 6388 IAccessibilityInteractionConnectionCallback callback, int flags, 6389 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6390 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6391 if (viewRootImpl != null && viewRootImpl.mView != null) { 6392 viewRootImpl.getAccessibilityInteractionController() 6393 .focusSearchClientThread(accessibilityNodeId, direction, interactionId, 6394 callback, flags, interrogatingPid, interrogatingTid, spec); 6395 } else { 6396 // We cannot make the call and notify the caller so it does not wait. 6397 try { 6398 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6399 } catch (RemoteException re) { 6400 /* best effort - ignore */ 6401 } 6402 } 6403 } 6404 } 6405 6406 private class SendWindowContentChangedAccessibilityEvent implements Runnable { 6407 public View mSource; 6408 6409 public void run() { 6410 if (mSource != null) { 6411 mSource.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED); 6412 mSource.resetAccessibilityStateChanged(); 6413 mSource = null; 6414 } 6415 } 6416 } 6417} 6418