ViewRootImpl.java revision a86ab640f7bb0bf3cb4eaed80473ca8c5d131903
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.view.Surface.OutOfResourcesException; 72import android.widget.Scroller; 73 74import com.android.internal.R; 75import com.android.internal.os.SomeArgs; 76import com.android.internal.policy.PolicyManager; 77import com.android.internal.view.BaseSurfaceHolder; 78import com.android.internal.view.RootViewSurfaceTaker; 79 80import java.io.IOException; 81import java.io.OutputStream; 82import java.lang.ref.WeakReference; 83import java.util.ArrayList; 84import java.util.HashSet; 85import java.util.Locale; 86 87/** 88 * The top of a view hierarchy, implementing the needed protocol between View 89 * and the WindowManager. This is for the most part an internal implementation 90 * detail of {@link WindowManagerGlobal}. 91 * 92 * {@hide} 93 */ 94@SuppressWarnings({"EmptyCatchBlock", "PointlessBooleanExpression"}) 95public final class ViewRootImpl implements ViewParent, 96 View.AttachInfo.Callbacks, HardwareRenderer.HardwareDrawCallbacks { 97 private static final String TAG = "ViewRootImpl"; 98 private static final boolean DBG = false; 99 private static final boolean LOCAL_LOGV = false; 100 /** @noinspection PointlessBooleanExpression*/ 101 private static final boolean DEBUG_DRAW = false || LOCAL_LOGV; 102 private static final boolean DEBUG_LAYOUT = false || LOCAL_LOGV; 103 private static final boolean DEBUG_DIALOG = false || LOCAL_LOGV; 104 private static final boolean DEBUG_INPUT_RESIZE = false || LOCAL_LOGV; 105 private static final boolean DEBUG_ORIENTATION = false || LOCAL_LOGV; 106 private static final boolean DEBUG_TRACKBALL = false || LOCAL_LOGV; 107 private static final boolean DEBUG_IMF = false || LOCAL_LOGV; 108 private static final boolean DEBUG_CONFIGURATION = false || LOCAL_LOGV; 109 private static final boolean DEBUG_FPS = false; 110 private static final boolean DEBUG_INPUT_PROCESSING = false || LOCAL_LOGV; 111 112 /** 113 * Set this system property to true to force the view hierarchy to render 114 * at 60 Hz. This can be used to measure the potential framerate. 115 */ 116 private static final String PROPERTY_PROFILE_RENDERING = "viewroot.profile_rendering"; 117 private static final String PROPERTY_MEDIA_DISABLED = "config.disable_media"; 118 119 /** 120 * Maximum time we allow the user to roll the trackball enough to generate 121 * a key event, before resetting the counters. 122 */ 123 static final int MAX_TRACKBALL_DELAY = 250; 124 125 static final ThreadLocal<RunQueue> sRunQueues = new ThreadLocal<RunQueue>(); 126 127 static final ArrayList<Runnable> sFirstDrawHandlers = new ArrayList<Runnable>(); 128 static boolean sFirstDrawComplete = false; 129 130 static final ArrayList<ComponentCallbacks> sConfigCallbacks 131 = new ArrayList<ComponentCallbacks>(); 132 133 final Context mContext; 134 final IWindowSession mWindowSession; 135 final Display mDisplay; 136 final String mBasePackageName; 137 138 final int[] mTmpLocation = new int[2]; 139 140 final TypedValue mTmpValue = new TypedValue(); 141 142 final Thread mThread; 143 144 final WindowLeaked mLocation; 145 146 final WindowManager.LayoutParams mWindowAttributes = new WindowManager.LayoutParams(); 147 148 final W mWindow; 149 150 final int mTargetSdkVersion; 151 152 int mSeq; 153 154 View mView; 155 156 View mAccessibilityFocusedHost; 157 AccessibilityNodeInfo mAccessibilityFocusedVirtualView; 158 159 int mViewVisibility; 160 boolean mAppVisible = true; 161 int mOrigWindowType = -1; 162 163 // Set to true if the owner of this window is in the stopped state, 164 // so the window should no longer be active. 165 boolean mStopped = false; 166 167 boolean mLastInCompatMode = false; 168 169 SurfaceHolder.Callback2 mSurfaceHolderCallback; 170 BaseSurfaceHolder mSurfaceHolder; 171 boolean mIsCreating; 172 boolean mDrawingAllowed; 173 174 final Region mTransparentRegion; 175 final Region mPreviousTransparentRegion; 176 177 int mWidth; 178 int mHeight; 179 Rect mDirty; 180 final Rect mCurrentDirty = new Rect(); 181 boolean mIsAnimating; 182 183 CompatibilityInfo.Translator mTranslator; 184 185 final View.AttachInfo mAttachInfo; 186 InputChannel mInputChannel; 187 InputQueue.Callback mInputQueueCallback; 188 InputQueue mInputQueue; 189 FallbackEventHandler mFallbackEventHandler; 190 Choreographer mChoreographer; 191 192 final Rect mTempRect; // used in the transaction to not thrash the heap. 193 final Rect mVisRect; // used to retrieve visible rect of focused view. 194 195 boolean mTraversalScheduled; 196 int mTraversalBarrier; 197 boolean mWillDrawSoon; 198 /** Set to true while in performTraversals for detecting when die(true) is called from internal 199 * callbacks such as onMeasure, onPreDraw, onDraw and deferring doDie() until later. */ 200 boolean mIsInTraversal; 201 boolean mFitSystemWindowsRequested; 202 boolean mLayoutRequested; 203 boolean mFirst; 204 boolean mReportNextDraw; 205 boolean mFullRedrawNeeded; 206 boolean mNewSurfaceNeeded; 207 boolean mHasHadWindowFocus; 208 boolean mLastWasImTarget; 209 boolean mWindowsAnimating; 210 boolean mDrawDuringWindowsAnimating; 211 boolean mIsDrawing; 212 int mLastSystemUiVisibility; 213 int mClientWindowLayoutFlags; 214 boolean mLastOverscanRequested; 215 216 // Pool of queued input events. 217 private static final int MAX_QUEUED_INPUT_EVENT_POOL_SIZE = 10; 218 private QueuedInputEvent mQueuedInputEventPool; 219 private int mQueuedInputEventPoolSize; 220 221 /* Input event queue. 222 * Pending input events are input events waiting to be delivered to the input stages 223 * and handled by the application. 224 */ 225 QueuedInputEvent mPendingInputEventHead; 226 QueuedInputEvent mPendingInputEventTail; 227 int mPendingInputEventCount; 228 boolean mProcessInputEventsScheduled; 229 String mPendingInputEventQueueLengthCounterName = "pq"; 230 231 InputStage mFirstInputStage; 232 InputStage mFirstPostImeInputStage; 233 234 boolean mFlipControllerFallbackKeys; 235 236 boolean mWindowAttributesChanged = false; 237 int mWindowAttributesChangesFlag = 0; 238 239 // These can be accessed by any thread, must be protected with a lock. 240 // Surface can never be reassigned or cleared (use Surface.clear()). 241 private final Surface mSurface = new Surface(); 242 243 boolean mAdded; 244 boolean mAddedTouchMode; 245 246 final DisplayAdjustments mDisplayAdjustments; 247 248 // These are accessed by multiple threads. 249 final Rect mWinFrame; // frame given by window manager. 250 251 final Rect mPendingOverscanInsets = new Rect(); 252 final Rect mPendingVisibleInsets = new Rect(); 253 final Rect mPendingContentInsets = new Rect(); 254 final ViewTreeObserver.InternalInsetsInfo mLastGivenInsets 255 = new ViewTreeObserver.InternalInsetsInfo(); 256 257 final Rect mFitSystemWindowsInsets = new Rect(); 258 259 final Configuration mLastConfiguration = new Configuration(); 260 final Configuration mPendingConfiguration = new Configuration(); 261 262 boolean mScrollMayChange; 263 int mSoftInputMode; 264 WeakReference<View> mLastScrolledFocus; 265 int mScrollY; 266 int mCurScrollY; 267 Scroller mScroller; 268 HardwareLayer mResizeBuffer; 269 long mResizeBufferStartTime; 270 int mResizeBufferDuration; 271 static final Interpolator mResizeInterpolator = new AccelerateDecelerateInterpolator(); 272 private ArrayList<LayoutTransition> mPendingTransitions; 273 274 final ViewConfiguration mViewConfiguration; 275 276 /* Drag/drop */ 277 ClipDescription mDragDescription; 278 View mCurrentDragView; 279 volatile Object mLocalDragState; 280 final PointF mDragPoint = new PointF(); 281 final PointF mLastTouchPoint = new PointF(); 282 283 private boolean mProfileRendering; 284 private Choreographer.FrameCallback mRenderProfiler; 285 private boolean mRenderProfilingEnabled; 286 287 private boolean mMediaDisabled; 288 289 // Variables to track frames per second, enabled via DEBUG_FPS flag 290 private long mFpsStartTime = -1; 291 private long mFpsPrevTime = -1; 292 private int mFpsNumFrames; 293 294 private final ArrayList<DisplayList> mDisplayLists = new ArrayList<DisplayList>(); 295 296 /** 297 * see {@link #playSoundEffect(int)} 298 */ 299 AudioManager mAudioManager; 300 301 final AccessibilityManager mAccessibilityManager; 302 303 AccessibilityInteractionController mAccessibilityInteractionController; 304 305 AccessibilityInteractionConnectionManager mAccessibilityInteractionConnectionManager; 306 307 SendWindowContentChangedAccessibilityEvent mSendWindowContentChangedAccessibilityEvent; 308 309 HashSet<View> mTempHashSet; 310 311 private final int mDensity; 312 private final int mNoncompatDensity; 313 314 private boolean mInLayout = false; 315 ArrayList<View> mLayoutRequesters = new ArrayList<View>(); 316 boolean mHandlingLayoutInLayoutRequest = false; 317 318 private int mViewLayoutDirectionInitial; 319 320 /** Set to true once doDie() has been called. */ 321 private boolean mRemoved; 322 323 /** 324 * Consistency verifier for debugging purposes. 325 */ 326 protected final InputEventConsistencyVerifier mInputEventConsistencyVerifier = 327 InputEventConsistencyVerifier.isInstrumentationEnabled() ? 328 new InputEventConsistencyVerifier(this, 0) : null; 329 330 static final class SystemUiVisibilityInfo { 331 int seq; 332 int globalVisibility; 333 int localValue; 334 int localChanges; 335 } 336 337 public ViewRootImpl(Context context, Display display) { 338 mContext = context; 339 mWindowSession = WindowManagerGlobal.getWindowSession(); 340 mDisplay = display; 341 mBasePackageName = context.getBasePackageName(); 342 343 mDisplayAdjustments = display.getDisplayAdjustments(); 344 345 mThread = Thread.currentThread(); 346 mLocation = new WindowLeaked(null); 347 mLocation.fillInStackTrace(); 348 mWidth = -1; 349 mHeight = -1; 350 mDirty = new Rect(); 351 mTempRect = new Rect(); 352 mVisRect = new Rect(); 353 mWinFrame = new Rect(); 354 mWindow = new W(this); 355 mTargetSdkVersion = context.getApplicationInfo().targetSdkVersion; 356 mViewVisibility = View.GONE; 357 mTransparentRegion = new Region(); 358 mPreviousTransparentRegion = new Region(); 359 mFirst = true; // true for the first time the view is added 360 mAdded = false; 361 mAccessibilityManager = AccessibilityManager.getInstance(context); 362 mAccessibilityInteractionConnectionManager = 363 new AccessibilityInteractionConnectionManager(); 364 mAccessibilityManager.addAccessibilityStateChangeListener( 365 mAccessibilityInteractionConnectionManager); 366 mAttachInfo = new View.AttachInfo(mWindowSession, mWindow, display, this, mHandler, this); 367 mViewConfiguration = ViewConfiguration.get(context); 368 mDensity = context.getResources().getDisplayMetrics().densityDpi; 369 mNoncompatDensity = context.getResources().getDisplayMetrics().noncompatDensityDpi; 370 mFallbackEventHandler = PolicyManager.makeNewFallbackEventHandler(context); 371 mChoreographer = Choreographer.getInstance(); 372 mFlipControllerFallbackKeys = 373 context.getResources().getBoolean(R.bool.flip_controller_fallback_keys); 374 375 PowerManager powerManager = (PowerManager) context.getSystemService(Context.POWER_SERVICE); 376 mAttachInfo.mScreenOn = powerManager.isScreenOn(); 377 loadSystemProperties(); 378 } 379 380 public static void addFirstDrawHandler(Runnable callback) { 381 synchronized (sFirstDrawHandlers) { 382 if (!sFirstDrawComplete) { 383 sFirstDrawHandlers.add(callback); 384 } 385 } 386 } 387 388 public static void addConfigCallback(ComponentCallbacks callback) { 389 synchronized (sConfigCallbacks) { 390 sConfigCallbacks.add(callback); 391 } 392 } 393 394 // FIXME for perf testing only 395 private boolean mProfile = false; 396 397 /** 398 * Call this to profile the next traversal call. 399 * FIXME for perf testing only. Remove eventually 400 */ 401 public void profile() { 402 mProfile = true; 403 } 404 405 /** 406 * Indicates whether we are in touch mode. Calling this method triggers an IPC 407 * call and should be avoided whenever possible. 408 * 409 * @return True, if the device is in touch mode, false otherwise. 410 * 411 * @hide 412 */ 413 static boolean isInTouchMode() { 414 IWindowSession windowSession = WindowManagerGlobal.peekWindowSession(); 415 if (windowSession != null) { 416 try { 417 return windowSession.getInTouchMode(); 418 } catch (RemoteException e) { 419 } 420 } 421 return false; 422 } 423 424 /** 425 * We have one child 426 */ 427 public void setView(View view, WindowManager.LayoutParams attrs, View panelParentView) { 428 synchronized (this) { 429 if (mView == null) { 430 mView = view; 431 mViewLayoutDirectionInitial = mView.getRawLayoutDirection(); 432 mFallbackEventHandler.setView(view); 433 mWindowAttributes.copyFrom(attrs); 434 if (mWindowAttributes.packageName == null) { 435 mWindowAttributes.packageName = mBasePackageName; 436 } 437 attrs = mWindowAttributes; 438 // Keep track of the actual window flags supplied by the client. 439 mClientWindowLayoutFlags = attrs.flags; 440 441 setAccessibilityFocus(null, null); 442 443 if (view instanceof RootViewSurfaceTaker) { 444 mSurfaceHolderCallback = 445 ((RootViewSurfaceTaker)view).willYouTakeTheSurface(); 446 if (mSurfaceHolderCallback != null) { 447 mSurfaceHolder = new TakenSurfaceHolder(); 448 mSurfaceHolder.setFormat(PixelFormat.UNKNOWN); 449 } 450 } 451 452 CompatibilityInfo compatibilityInfo = mDisplayAdjustments.getCompatibilityInfo(); 453 mTranslator = compatibilityInfo.getTranslator(); 454 mDisplayAdjustments.setActivityToken(attrs.token); 455 456 // If the application owns the surface, don't enable hardware acceleration 457 if (mSurfaceHolder == null) { 458 enableHardwareAcceleration(attrs); 459 } 460 461 boolean restore = false; 462 if (mTranslator != null) { 463 mSurface.setCompatibilityTranslator(mTranslator); 464 restore = true; 465 attrs.backup(); 466 mTranslator.translateWindowLayout(attrs); 467 } 468 if (DEBUG_LAYOUT) Log.d(TAG, "WindowLayout in setView:" + attrs); 469 470 if (!compatibilityInfo.supportsScreen()) { 471 attrs.flags |= WindowManager.LayoutParams.FLAG_COMPATIBLE_WINDOW; 472 mLastInCompatMode = true; 473 } 474 475 mSoftInputMode = attrs.softInputMode; 476 mWindowAttributesChanged = true; 477 mWindowAttributesChangesFlag = WindowManager.LayoutParams.EVERYTHING_CHANGED; 478 mAttachInfo.mRootView = view; 479 mAttachInfo.mScalingRequired = mTranslator != null; 480 mAttachInfo.mApplicationScale = 481 mTranslator == null ? 1.0f : mTranslator.applicationScale; 482 if (panelParentView != null) { 483 mAttachInfo.mPanelParentWindowToken 484 = panelParentView.getApplicationWindowToken(); 485 } 486 mAdded = true; 487 int res; /* = WindowManagerImpl.ADD_OKAY; */ 488 489 // Schedule the first layout -before- adding to the window 490 // manager, to make sure we do the relayout before receiving 491 // any other events from the system. 492 requestLayout(); 493 if ((mWindowAttributes.inputFeatures 494 & WindowManager.LayoutParams.INPUT_FEATURE_NO_INPUT_CHANNEL) == 0) { 495 mInputChannel = new InputChannel(); 496 } 497 try { 498 mOrigWindowType = mWindowAttributes.type; 499 mAttachInfo.mRecomputeGlobalAttributes = true; 500 collectViewAttributes(); 501 res = mWindowSession.addToDisplay(mWindow, mSeq, mWindowAttributes, 502 getHostVisibility(), mDisplay.getDisplayId(), 503 mAttachInfo.mContentInsets, mInputChannel); 504 } catch (RemoteException e) { 505 mAdded = false; 506 mView = null; 507 mAttachInfo.mRootView = null; 508 mInputChannel = null; 509 mFallbackEventHandler.setView(null); 510 unscheduleTraversals(); 511 setAccessibilityFocus(null, null); 512 throw new RuntimeException("Adding window failed", e); 513 } finally { 514 if (restore) { 515 attrs.restore(); 516 } 517 } 518 519 if (mTranslator != null) { 520 mTranslator.translateRectInScreenToAppWindow(mAttachInfo.mContentInsets); 521 } 522 mPendingOverscanInsets.set(0, 0, 0, 0); 523 mPendingContentInsets.set(mAttachInfo.mContentInsets); 524 mPendingVisibleInsets.set(0, 0, 0, 0); 525 if (DEBUG_LAYOUT) Log.v(TAG, "Added window " + mWindow); 526 if (res < WindowManagerGlobal.ADD_OKAY) { 527 mAttachInfo.mRootView = null; 528 mAdded = false; 529 mFallbackEventHandler.setView(null); 530 unscheduleTraversals(); 531 setAccessibilityFocus(null, null); 532 switch (res) { 533 case WindowManagerGlobal.ADD_BAD_APP_TOKEN: 534 case WindowManagerGlobal.ADD_BAD_SUBWINDOW_TOKEN: 535 throw new WindowManager.BadTokenException( 536 "Unable to add window -- token " + attrs.token 537 + " is not valid; is your activity running?"); 538 case WindowManagerGlobal.ADD_NOT_APP_TOKEN: 539 throw new WindowManager.BadTokenException( 540 "Unable to add window -- token " + attrs.token 541 + " is not for an application"); 542 case WindowManagerGlobal.ADD_APP_EXITING: 543 throw new WindowManager.BadTokenException( 544 "Unable to add window -- app for token " + attrs.token 545 + " is exiting"); 546 case WindowManagerGlobal.ADD_DUPLICATE_ADD: 547 throw new WindowManager.BadTokenException( 548 "Unable to add window -- window " + mWindow 549 + " has already been added"); 550 case WindowManagerGlobal.ADD_STARTING_NOT_NEEDED: 551 // Silently ignore -- we would have just removed it 552 // right away, anyway. 553 return; 554 case WindowManagerGlobal.ADD_MULTIPLE_SINGLETON: 555 throw new WindowManager.BadTokenException( 556 "Unable to add window " + mWindow + 557 " -- another window of this type already exists"); 558 case WindowManagerGlobal.ADD_PERMISSION_DENIED: 559 throw new WindowManager.BadTokenException( 560 "Unable to add window " + mWindow + 561 " -- permission denied for this window type"); 562 case WindowManagerGlobal.ADD_INVALID_DISPLAY: 563 throw new WindowManager.InvalidDisplayException( 564 "Unable to add window " + mWindow + 565 " -- the specified display can not be found"); 566 } 567 throw new RuntimeException( 568 "Unable to add window -- unknown error code " + res); 569 } 570 571 if (view instanceof RootViewSurfaceTaker) { 572 mInputQueueCallback = 573 ((RootViewSurfaceTaker)view).willYouTakeTheInputQueue(); 574 } 575 if (mInputChannel != null) { 576 if (mInputQueueCallback != null) { 577 mInputQueue = new InputQueue(); 578 mInputQueueCallback.onInputQueueCreated(mInputQueue); 579 } 580 mInputEventReceiver = new WindowInputEventReceiver(mInputChannel, 581 Looper.myLooper()); 582 } 583 584 view.assignParent(this); 585 mAddedTouchMode = (res & WindowManagerGlobal.ADD_FLAG_IN_TOUCH_MODE) != 0; 586 mAppVisible = (res & WindowManagerGlobal.ADD_FLAG_APP_VISIBLE) != 0; 587 588 if (mAccessibilityManager.isEnabled()) { 589 mAccessibilityInteractionConnectionManager.ensureConnection(); 590 } 591 592 if (view.getImportantForAccessibility() == View.IMPORTANT_FOR_ACCESSIBILITY_AUTO) { 593 view.setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_YES); 594 } 595 596 // Set up the input pipeline. 597 CharSequence counterSuffix = attrs.getTitle(); 598 InputStage syntheticInputStage = new SyntheticInputStage(); 599 InputStage viewPostImeStage = new ViewPostImeInputStage(syntheticInputStage); 600 InputStage nativePostImeStage = new NativePostImeInputStage(viewPostImeStage, 601 "aq:native-post-ime:" + counterSuffix); 602 InputStage earlyPostImeStage = new EarlyPostImeInputStage(nativePostImeStage); 603 InputStage imeStage = new ImeInputStage(earlyPostImeStage, 604 "aq:ime:" + counterSuffix); 605 InputStage viewPreImeStage = new ViewPreImeInputStage(imeStage); 606 InputStage nativePreImeStage = new NativePreImeInputStage(viewPreImeStage, 607 "aq:native-pre-ime:" + counterSuffix); 608 609 mFirstInputStage = nativePreImeStage; 610 mFirstPostImeInputStage = earlyPostImeStage; 611 mPendingInputEventQueueLengthCounterName = "aq:pending:" + counterSuffix; 612 } 613 } 614 } 615 616 /** Whether the window is in local focus mode or not */ 617 private boolean isInLocalFocusMode() { 618 return (mWindowAttributes.flags & WindowManager.LayoutParams.FLAG_LOCAL_FOCUS_MODE) != 0; 619 } 620 621 void destroyHardwareResources() { 622 invalidateDisplayLists(); 623 if (mAttachInfo.mHardwareRenderer != null) { 624 mAttachInfo.mHardwareRenderer.destroyHardwareResources(mView); 625 mAttachInfo.mHardwareRenderer.destroy(false); 626 } 627 } 628 629 void destroyHardwareLayers() { 630 if (mThread != Thread.currentThread()) { 631 if (mAttachInfo.mHardwareRenderer != null && 632 mAttachInfo.mHardwareRenderer.isEnabled()) { 633 HardwareRenderer.trimMemory(ComponentCallbacks2.TRIM_MEMORY_MODERATE); 634 } 635 } else { 636 invalidateDisplayLists(); 637 if (mAttachInfo.mHardwareRenderer != null && 638 mAttachInfo.mHardwareRenderer.isEnabled()) { 639 mAttachInfo.mHardwareRenderer.destroyLayers(mView); 640 } 641 } 642 } 643 644 void pushHardwareLayerUpdate(HardwareLayer layer) { 645 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled()) { 646 mAttachInfo.mHardwareRenderer.pushLayerUpdate(layer); 647 } 648 } 649 650 void flushHardwareLayerUpdates() { 651 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled() && 652 mAttachInfo.mHardwareRenderer.validate()) { 653 mAttachInfo.mHardwareRenderer.flushLayerUpdates(); 654 } 655 } 656 657 void dispatchFlushHardwareLayerUpdates() { 658 mHandler.removeMessages(MSG_FLUSH_LAYER_UPDATES); 659 mHandler.sendMessageAtFrontOfQueue(mHandler.obtainMessage(MSG_FLUSH_LAYER_UPDATES)); 660 } 661 662 public boolean attachFunctor(int functor) { 663 //noinspection SimplifiableIfStatement 664 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled()) { 665 return mAttachInfo.mHardwareRenderer.attachFunctor(mAttachInfo, functor); 666 } 667 return false; 668 } 669 670 public void detachFunctor(int functor) { 671 if (mAttachInfo.mHardwareRenderer != null) { 672 mAttachInfo.mHardwareRenderer.detachFunctor(functor); 673 } 674 } 675 676 private void enableHardwareAcceleration(WindowManager.LayoutParams attrs) { 677 mAttachInfo.mHardwareAccelerated = false; 678 mAttachInfo.mHardwareAccelerationRequested = false; 679 680 // Don't enable hardware acceleration when the application is in compatibility mode 681 if (mTranslator != null) return; 682 683 // Try to enable hardware acceleration if requested 684 final boolean hardwareAccelerated = 685 (attrs.flags & WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED) != 0; 686 687 if (hardwareAccelerated) { 688 if (!HardwareRenderer.isAvailable()) { 689 return; 690 } 691 692 // Persistent processes (including the system) should not do 693 // accelerated rendering on low-end devices. In that case, 694 // sRendererDisabled will be set. In addition, the system process 695 // itself should never do accelerated rendering. In that case, both 696 // sRendererDisabled and sSystemRendererDisabled are set. When 697 // sSystemRendererDisabled is set, PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED 698 // can be used by code on the system process to escape that and enable 699 // HW accelerated drawing. (This is basically for the lock screen.) 700 701 final boolean fakeHwAccelerated = (attrs.privateFlags & 702 WindowManager.LayoutParams.PRIVATE_FLAG_FAKE_HARDWARE_ACCELERATED) != 0; 703 final boolean forceHwAccelerated = (attrs.privateFlags & 704 WindowManager.LayoutParams.PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED) != 0; 705 706 if (!HardwareRenderer.sRendererDisabled || (HardwareRenderer.sSystemRendererDisabled 707 && forceHwAccelerated)) { 708 // Don't enable hardware acceleration when we're not on the main thread 709 if (!HardwareRenderer.sSystemRendererDisabled && 710 Looper.getMainLooper() != Looper.myLooper()) { 711 Log.w(HardwareRenderer.LOG_TAG, "Attempting to initialize hardware " 712 + "acceleration outside of the main thread, aborting"); 713 return; 714 } 715 716 if (mAttachInfo.mHardwareRenderer != null) { 717 mAttachInfo.mHardwareRenderer.destroy(true); 718 } 719 720 final boolean translucent = attrs.format != PixelFormat.OPAQUE; 721 mAttachInfo.mHardwareRenderer = HardwareRenderer.createGlRenderer(2, translucent); 722 if (mAttachInfo.mHardwareRenderer != null) { 723 mAttachInfo.mHardwareRenderer.setName(attrs.getTitle().toString()); 724 mAttachInfo.mHardwareAccelerated = 725 mAttachInfo.mHardwareAccelerationRequested = true; 726 } 727 } else if (fakeHwAccelerated) { 728 // The window had wanted to use hardware acceleration, but this 729 // is not allowed in its process. By setting this flag, it can 730 // still render as if it was accelerated. This is basically for 731 // the preview windows the window manager shows for launching 732 // applications, so they will look more like the app being launched. 733 mAttachInfo.mHardwareAccelerationRequested = true; 734 } 735 } 736 } 737 738 public View getView() { 739 return mView; 740 } 741 742 final WindowLeaked getLocation() { 743 return mLocation; 744 } 745 746 void setLayoutParams(WindowManager.LayoutParams attrs, boolean newView) { 747 synchronized (this) { 748 int oldSoftInputMode = mWindowAttributes.softInputMode; 749 // Keep track of the actual window flags supplied by the client. 750 mClientWindowLayoutFlags = attrs.flags; 751 // preserve compatible window flag if exists. 752 int compatibleWindowFlag = 753 mWindowAttributes.flags & WindowManager.LayoutParams.FLAG_COMPATIBLE_WINDOW; 754 // transfer over system UI visibility values as they carry current state. 755 attrs.systemUiVisibility = mWindowAttributes.systemUiVisibility; 756 attrs.subtreeSystemUiVisibility = mWindowAttributes.subtreeSystemUiVisibility; 757 mWindowAttributesChangesFlag = mWindowAttributes.copyFrom(attrs); 758 if (mWindowAttributes.packageName == null) { 759 mWindowAttributes.packageName = mBasePackageName; 760 } 761 mWindowAttributes.flags |= compatibleWindowFlag; 762 763 applyKeepScreenOnFlag(mWindowAttributes); 764 765 if (newView) { 766 mSoftInputMode = attrs.softInputMode; 767 requestLayout(); 768 } 769 // Don't lose the mode we last auto-computed. 770 if ((attrs.softInputMode&WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 771 == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 772 mWindowAttributes.softInputMode = (mWindowAttributes.softInputMode 773 & ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 774 | (oldSoftInputMode 775 & WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST); 776 } 777 mWindowAttributesChanged = true; 778 scheduleTraversals(); 779 } 780 } 781 782 void handleAppVisibility(boolean visible) { 783 if (mAppVisible != visible) { 784 mAppVisible = visible; 785 scheduleTraversals(); 786 } 787 } 788 789 void handleGetNewSurface() { 790 mNewSurfaceNeeded = true; 791 mFullRedrawNeeded = true; 792 scheduleTraversals(); 793 } 794 795 void handleScreenStateChange(boolean on) { 796 if (on != mAttachInfo.mScreenOn) { 797 mAttachInfo.mScreenOn = on; 798 if (mView != null) { 799 mView.dispatchScreenStateChanged(on ? View.SCREEN_STATE_ON : View.SCREEN_STATE_OFF); 800 } 801 if (on) { 802 mFullRedrawNeeded = true; 803 scheduleTraversals(); 804 } 805 } 806 } 807 808 @Override 809 public void requestFitSystemWindows() { 810 checkThread(); 811 mFitSystemWindowsRequested = true; 812 scheduleTraversals(); 813 } 814 815 @Override 816 public void requestLayout() { 817 if (!mHandlingLayoutInLayoutRequest) { 818 checkThread(); 819 mLayoutRequested = true; 820 scheduleTraversals(); 821 } 822 } 823 824 @Override 825 public boolean isLayoutRequested() { 826 return mLayoutRequested; 827 } 828 829 void invalidate() { 830 mDirty.set(0, 0, mWidth, mHeight); 831 scheduleTraversals(); 832 } 833 834 void invalidateWorld(View view) { 835 view.invalidate(); 836 if (view instanceof ViewGroup) { 837 ViewGroup parent = (ViewGroup) view; 838 for (int i = 0; i < parent.getChildCount(); i++) { 839 invalidateWorld(parent.getChildAt(i)); 840 } 841 } 842 } 843 844 @Override 845 public void invalidateChild(View child, Rect dirty) { 846 invalidateChildInParent(null, dirty); 847 } 848 849 @Override 850 public ViewParent invalidateChildInParent(int[] location, Rect dirty) { 851 checkThread(); 852 if (DEBUG_DRAW) Log.v(TAG, "Invalidate child: " + dirty); 853 854 if (dirty == null) { 855 invalidate(); 856 return null; 857 } else if (dirty.isEmpty() && !mIsAnimating) { 858 return null; 859 } 860 861 if (mCurScrollY != 0 || mTranslator != null) { 862 mTempRect.set(dirty); 863 dirty = mTempRect; 864 if (mCurScrollY != 0) { 865 dirty.offset(0, -mCurScrollY); 866 } 867 if (mTranslator != null) { 868 mTranslator.translateRectInAppWindowToScreen(dirty); 869 } 870 if (mAttachInfo.mScalingRequired) { 871 dirty.inset(-1, -1); 872 } 873 } 874 875 final Rect localDirty = mDirty; 876 if (!localDirty.isEmpty() && !localDirty.contains(dirty)) { 877 mAttachInfo.mSetIgnoreDirtyState = true; 878 mAttachInfo.mIgnoreDirtyState = true; 879 } 880 881 // Add the new dirty rect to the current one 882 localDirty.union(dirty.left, dirty.top, dirty.right, dirty.bottom); 883 // Intersect with the bounds of the window to skip 884 // updates that lie outside of the visible region 885 final float appScale = mAttachInfo.mApplicationScale; 886 final boolean intersected = localDirty.intersect(0, 0, 887 (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 888 if (!intersected) { 889 localDirty.setEmpty(); 890 } 891 if (!mWillDrawSoon && (intersected || mIsAnimating)) { 892 scheduleTraversals(); 893 } 894 895 return null; 896 } 897 898 void setStopped(boolean stopped) { 899 if (mStopped != stopped) { 900 mStopped = stopped; 901 if (!stopped) { 902 scheduleTraversals(); 903 } 904 } 905 } 906 907 @Override 908 public ViewParent getParent() { 909 return null; 910 } 911 912 @Override 913 public boolean getChildVisibleRect(View child, Rect r, android.graphics.Point offset) { 914 if (child != mView) { 915 throw new RuntimeException("child is not mine, honest!"); 916 } 917 // Note: don't apply scroll offset, because we want to know its 918 // visibility in the virtual canvas being given to the view hierarchy. 919 return r.intersect(0, 0, mWidth, mHeight); 920 } 921 922 @Override 923 public void bringChildToFront(View child) { 924 } 925 926 int getHostVisibility() { 927 return mAppVisible ? mView.getVisibility() : View.GONE; 928 } 929 930 void disposeResizeBuffer() { 931 if (mResizeBuffer != null && mAttachInfo.mHardwareRenderer != null) { 932 mAttachInfo.mHardwareRenderer.safelyRun(new Runnable() { 933 @Override 934 public void run() { 935 mResizeBuffer.destroy(); 936 mResizeBuffer = null; 937 } 938 }); 939 } 940 } 941 942 /** 943 * Add LayoutTransition to the list of transitions to be started in the next traversal. 944 * This list will be cleared after the transitions on the list are start()'ed. These 945 * transitionsa re added by LayoutTransition itself when it sets up animations. The setup 946 * happens during the layout phase of traversal, which we want to complete before any of the 947 * animations are started (because those animations may side-effect properties that layout 948 * depends upon, like the bounding rectangles of the affected views). So we add the transition 949 * to the list and it is started just prior to starting the drawing phase of traversal. 950 * 951 * @param transition The LayoutTransition to be started on the next traversal. 952 * 953 * @hide 954 */ 955 public void requestTransitionStart(LayoutTransition transition) { 956 if (mPendingTransitions == null || !mPendingTransitions.contains(transition)) { 957 if (mPendingTransitions == null) { 958 mPendingTransitions = new ArrayList<LayoutTransition>(); 959 } 960 mPendingTransitions.add(transition); 961 } 962 } 963 964 void scheduleTraversals() { 965 if (!mTraversalScheduled) { 966 mTraversalScheduled = true; 967 mTraversalBarrier = mHandler.getLooper().postSyncBarrier(); 968 mChoreographer.postCallback( 969 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 970 scheduleConsumeBatchedInput(); 971 } 972 } 973 974 void unscheduleTraversals() { 975 if (mTraversalScheduled) { 976 mTraversalScheduled = false; 977 mHandler.getLooper().removeSyncBarrier(mTraversalBarrier); 978 mChoreographer.removeCallbacks( 979 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 980 } 981 } 982 983 void doTraversal() { 984 if (mTraversalScheduled) { 985 mTraversalScheduled = false; 986 mHandler.getLooper().removeSyncBarrier(mTraversalBarrier); 987 988 if (mProfile) { 989 Debug.startMethodTracing("ViewAncestor"); 990 } 991 992 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "performTraversals"); 993 try { 994 performTraversals(); 995 } finally { 996 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 997 } 998 999 if (mProfile) { 1000 Debug.stopMethodTracing(); 1001 mProfile = false; 1002 } 1003 } 1004 } 1005 1006 private void applyKeepScreenOnFlag(WindowManager.LayoutParams params) { 1007 // Update window's global keep screen on flag: if a view has requested 1008 // that the screen be kept on, then it is always set; otherwise, it is 1009 // set to whatever the client last requested for the global state. 1010 if (mAttachInfo.mKeepScreenOn) { 1011 params.flags |= WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON; 1012 } else { 1013 params.flags = (params.flags&~WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON) 1014 | (mClientWindowLayoutFlags&WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 1015 } 1016 } 1017 1018 private boolean collectViewAttributes() { 1019 final View.AttachInfo attachInfo = mAttachInfo; 1020 if (attachInfo.mRecomputeGlobalAttributes) { 1021 //Log.i(TAG, "Computing view hierarchy attributes!"); 1022 attachInfo.mRecomputeGlobalAttributes = false; 1023 boolean oldScreenOn = attachInfo.mKeepScreenOn; 1024 attachInfo.mKeepScreenOn = false; 1025 attachInfo.mSystemUiVisibility = 0; 1026 attachInfo.mHasSystemUiListeners = false; 1027 mView.dispatchCollectViewAttributes(attachInfo, 0); 1028 attachInfo.mSystemUiVisibility &= ~attachInfo.mDisabledSystemUiVisibility; 1029 WindowManager.LayoutParams params = mWindowAttributes; 1030 if (attachInfo.mKeepScreenOn != oldScreenOn 1031 || attachInfo.mSystemUiVisibility != params.subtreeSystemUiVisibility 1032 || attachInfo.mHasSystemUiListeners != params.hasSystemUiListeners) { 1033 applyKeepScreenOnFlag(params); 1034 params.subtreeSystemUiVisibility = attachInfo.mSystemUiVisibility; 1035 params.hasSystemUiListeners = attachInfo.mHasSystemUiListeners; 1036 mView.dispatchWindowSystemUiVisiblityChanged(attachInfo.mSystemUiVisibility); 1037 return true; 1038 } 1039 } 1040 return false; 1041 } 1042 1043 private boolean measureHierarchy(final View host, final WindowManager.LayoutParams lp, 1044 final Resources res, final int desiredWindowWidth, final int desiredWindowHeight) { 1045 int childWidthMeasureSpec; 1046 int childHeightMeasureSpec; 1047 boolean windowSizeMayChange = false; 1048 1049 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) Log.v(TAG, 1050 "Measuring " + host + " in display " + desiredWindowWidth 1051 + "x" + desiredWindowHeight + "..."); 1052 1053 boolean goodMeasure = false; 1054 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT) { 1055 // On large screens, we don't want to allow dialogs to just 1056 // stretch to fill the entire width of the screen to display 1057 // one line of text. First try doing the layout at a smaller 1058 // size to see if it will fit. 1059 final DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1060 res.getValue(com.android.internal.R.dimen.config_prefDialogWidth, mTmpValue, true); 1061 int baseSize = 0; 1062 if (mTmpValue.type == TypedValue.TYPE_DIMENSION) { 1063 baseSize = (int)mTmpValue.getDimension(packageMetrics); 1064 } 1065 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": baseSize=" + baseSize); 1066 if (baseSize != 0 && desiredWindowWidth > baseSize) { 1067 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1068 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1069 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1070 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": measured (" 1071 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1072 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1073 goodMeasure = true; 1074 } else { 1075 // Didn't fit in that size... try expanding a bit. 1076 baseSize = (baseSize+desiredWindowWidth)/2; 1077 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": next baseSize=" 1078 + baseSize); 1079 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1080 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1081 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": measured (" 1082 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1083 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1084 if (DEBUG_DIALOG) Log.v(TAG, "Good!"); 1085 goodMeasure = true; 1086 } 1087 } 1088 } 1089 } 1090 1091 if (!goodMeasure) { 1092 childWidthMeasureSpec = getRootMeasureSpec(desiredWindowWidth, lp.width); 1093 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1094 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1095 if (mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) { 1096 windowSizeMayChange = true; 1097 } 1098 } 1099 1100 if (DBG) { 1101 System.out.println("======================================"); 1102 System.out.println("performTraversals -- after measure"); 1103 host.debug(); 1104 } 1105 1106 return windowSizeMayChange; 1107 } 1108 1109 private void performTraversals() { 1110 // cache mView since it is used so much below... 1111 final View host = mView; 1112 1113 if (DBG) { 1114 System.out.println("======================================"); 1115 System.out.println("performTraversals"); 1116 host.debug(); 1117 } 1118 1119 if (host == null || !mAdded) 1120 return; 1121 1122 mIsInTraversal = true; 1123 mWillDrawSoon = true; 1124 boolean windowSizeMayChange = false; 1125 boolean newSurface = false; 1126 boolean surfaceChanged = false; 1127 WindowManager.LayoutParams lp = mWindowAttributes; 1128 1129 int desiredWindowWidth; 1130 int desiredWindowHeight; 1131 1132 final View.AttachInfo attachInfo = mAttachInfo; 1133 1134 final int viewVisibility = getHostVisibility(); 1135 boolean viewVisibilityChanged = mViewVisibility != viewVisibility 1136 || mNewSurfaceNeeded; 1137 1138 WindowManager.LayoutParams params = null; 1139 if (mWindowAttributesChanged) { 1140 mWindowAttributesChanged = false; 1141 surfaceChanged = true; 1142 params = lp; 1143 } 1144 CompatibilityInfo compatibilityInfo = mDisplayAdjustments.getCompatibilityInfo(); 1145 if (compatibilityInfo.supportsScreen() == mLastInCompatMode) { 1146 params = lp; 1147 mFullRedrawNeeded = true; 1148 mLayoutRequested = true; 1149 if (mLastInCompatMode) { 1150 params.flags &= ~WindowManager.LayoutParams.FLAG_COMPATIBLE_WINDOW; 1151 mLastInCompatMode = false; 1152 } else { 1153 params.flags |= WindowManager.LayoutParams.FLAG_COMPATIBLE_WINDOW; 1154 mLastInCompatMode = true; 1155 } 1156 } 1157 1158 mWindowAttributesChangesFlag = 0; 1159 1160 Rect frame = mWinFrame; 1161 if (mFirst) { 1162 mFullRedrawNeeded = true; 1163 mLayoutRequested = true; 1164 1165 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL) { 1166 // NOTE -- system code, won't try to do compat mode. 1167 Point size = new Point(); 1168 mDisplay.getRealSize(size); 1169 desiredWindowWidth = size.x; 1170 desiredWindowHeight = size.y; 1171 } else { 1172 DisplayMetrics packageMetrics = 1173 mView.getContext().getResources().getDisplayMetrics(); 1174 desiredWindowWidth = packageMetrics.widthPixels; 1175 desiredWindowHeight = packageMetrics.heightPixels; 1176 } 1177 1178 // For the very first time, tell the view hierarchy that it 1179 // is attached to the window. Note that at this point the surface 1180 // object is not initialized to its backing store, but soon it 1181 // will be (assuming the window is visible). 1182 attachInfo.mSurface = mSurface; 1183 // We used to use the following condition to choose 32 bits drawing caches: 1184 // PixelFormat.hasAlpha(lp.format) || lp.format == PixelFormat.RGBX_8888 1185 // However, windows are now always 32 bits by default, so choose 32 bits 1186 attachInfo.mUse32BitDrawingCache = true; 1187 attachInfo.mHasWindowFocus = false; 1188 attachInfo.mWindowVisibility = viewVisibility; 1189 attachInfo.mRecomputeGlobalAttributes = false; 1190 viewVisibilityChanged = false; 1191 mLastConfiguration.setTo(host.getResources().getConfiguration()); 1192 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1193 // Set the layout direction if it has not been set before (inherit is the default) 1194 if (mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 1195 host.setLayoutDirection(mLastConfiguration.getLayoutDirection()); 1196 } 1197 host.dispatchAttachedToWindow(attachInfo, 0); 1198 attachInfo.mTreeObserver.dispatchOnWindowAttachedChange(true); 1199 mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets); 1200 host.fitSystemWindows(mFitSystemWindowsInsets); 1201 //Log.i(TAG, "Screen on initialized: " + attachInfo.mKeepScreenOn); 1202 1203 } else { 1204 desiredWindowWidth = frame.width(); 1205 desiredWindowHeight = frame.height(); 1206 if (desiredWindowWidth != mWidth || desiredWindowHeight != mHeight) { 1207 if (DEBUG_ORIENTATION) Log.v(TAG, 1208 "View " + host + " resized to: " + frame); 1209 mFullRedrawNeeded = true; 1210 mLayoutRequested = true; 1211 windowSizeMayChange = true; 1212 } 1213 } 1214 1215 if (viewVisibilityChanged) { 1216 attachInfo.mWindowVisibility = viewVisibility; 1217 host.dispatchWindowVisibilityChanged(viewVisibility); 1218 if (viewVisibility != View.VISIBLE || mNewSurfaceNeeded) { 1219 destroyHardwareResources(); 1220 } 1221 if (viewVisibility == View.GONE) { 1222 // After making a window gone, we will count it as being 1223 // shown for the first time the next time it gets focus. 1224 mHasHadWindowFocus = false; 1225 } 1226 } 1227 1228 // Execute enqueued actions on every traversal in case a detached view enqueued an action 1229 getRunQueue().executeActions(attachInfo.mHandler); 1230 1231 boolean insetsChanged = false; 1232 1233 boolean layoutRequested = mLayoutRequested && !mStopped; 1234 if (layoutRequested) { 1235 1236 final Resources res = mView.getContext().getResources(); 1237 1238 if (mFirst) { 1239 // make sure touch mode code executes by setting cached value 1240 // to opposite of the added touch mode. 1241 mAttachInfo.mInTouchMode = !mAddedTouchMode; 1242 ensureTouchModeLocally(mAddedTouchMode); 1243 } else { 1244 if (!mPendingOverscanInsets.equals(mAttachInfo.mOverscanInsets)) { 1245 insetsChanged = true; 1246 } 1247 if (!mPendingContentInsets.equals(mAttachInfo.mContentInsets)) { 1248 insetsChanged = true; 1249 } 1250 if (!mPendingVisibleInsets.equals(mAttachInfo.mVisibleInsets)) { 1251 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1252 if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: " 1253 + mAttachInfo.mVisibleInsets); 1254 } 1255 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT 1256 || lp.height == ViewGroup.LayoutParams.WRAP_CONTENT) { 1257 windowSizeMayChange = true; 1258 1259 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL) { 1260 // NOTE -- system code, won't try to do compat mode. 1261 Point size = new Point(); 1262 mDisplay.getRealSize(size); 1263 desiredWindowWidth = size.x; 1264 desiredWindowHeight = size.y; 1265 } else { 1266 DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1267 desiredWindowWidth = packageMetrics.widthPixels; 1268 desiredWindowHeight = packageMetrics.heightPixels; 1269 } 1270 } 1271 } 1272 1273 // Ask host how big it wants to be 1274 windowSizeMayChange |= measureHierarchy(host, lp, res, 1275 desiredWindowWidth, desiredWindowHeight); 1276 } 1277 1278 if (collectViewAttributes()) { 1279 params = lp; 1280 } 1281 if (attachInfo.mForceReportNewAttributes) { 1282 attachInfo.mForceReportNewAttributes = false; 1283 params = lp; 1284 } 1285 1286 if (mFirst || attachInfo.mViewVisibilityChanged) { 1287 attachInfo.mViewVisibilityChanged = false; 1288 int resizeMode = mSoftInputMode & 1289 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST; 1290 // If we are in auto resize mode, then we need to determine 1291 // what mode to use now. 1292 if (resizeMode == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 1293 final int N = attachInfo.mScrollContainers.size(); 1294 for (int i=0; i<N; i++) { 1295 if (attachInfo.mScrollContainers.get(i).isShown()) { 1296 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE; 1297 } 1298 } 1299 if (resizeMode == 0) { 1300 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_PAN; 1301 } 1302 if ((lp.softInputMode & 1303 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) != resizeMode) { 1304 lp.softInputMode = (lp.softInputMode & 1305 ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) | 1306 resizeMode; 1307 params = lp; 1308 } 1309 } 1310 } 1311 1312 if (params != null) { 1313 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 1314 if (!PixelFormat.formatHasAlpha(params.format)) { 1315 params.format = PixelFormat.TRANSLUCENT; 1316 } 1317 } 1318 mAttachInfo.mOverscanRequested = (params.flags 1319 & WindowManager.LayoutParams.FLAG_LAYOUT_IN_OVERSCAN) != 0; 1320 } 1321 1322 if (mFitSystemWindowsRequested) { 1323 mFitSystemWindowsRequested = false; 1324 mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets); 1325 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1326 host.fitSystemWindows(mFitSystemWindowsInsets); 1327 if (mLayoutRequested) { 1328 // Short-circuit catching a new layout request here, so 1329 // we don't need to go through two layout passes when things 1330 // change due to fitting system windows, which can happen a lot. 1331 windowSizeMayChange |= measureHierarchy(host, lp, 1332 mView.getContext().getResources(), 1333 desiredWindowWidth, desiredWindowHeight); 1334 } 1335 } 1336 1337 if (layoutRequested) { 1338 // Clear this now, so that if anything requests a layout in the 1339 // rest of this function we will catch it and re-run a full 1340 // layout pass. 1341 mLayoutRequested = false; 1342 } 1343 1344 boolean windowShouldResize = layoutRequested && windowSizeMayChange 1345 && ((mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) 1346 || (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT && 1347 frame.width() < desiredWindowWidth && frame.width() != mWidth) 1348 || (lp.height == ViewGroup.LayoutParams.WRAP_CONTENT && 1349 frame.height() < desiredWindowHeight && frame.height() != mHeight)); 1350 1351 final boolean computesInternalInsets = 1352 attachInfo.mTreeObserver.hasComputeInternalInsetsListeners(); 1353 1354 boolean insetsPending = false; 1355 int relayoutResult = 0; 1356 1357 if (mFirst || windowShouldResize || insetsChanged || 1358 viewVisibilityChanged || params != null) { 1359 1360 if (viewVisibility == View.VISIBLE) { 1361 // If this window is giving internal insets to the window 1362 // manager, and it is being added or changing its visibility, 1363 // then we want to first give the window manager "fake" 1364 // insets to cause it to effectively ignore the content of 1365 // the window during layout. This avoids it briefly causing 1366 // other windows to resize/move based on the raw frame of the 1367 // window, waiting until we can finish laying out this window 1368 // and get back to the window manager with the ultimately 1369 // computed insets. 1370 insetsPending = computesInternalInsets && (mFirst || viewVisibilityChanged); 1371 } 1372 1373 if (mSurfaceHolder != null) { 1374 mSurfaceHolder.mSurfaceLock.lock(); 1375 mDrawingAllowed = true; 1376 } 1377 1378 boolean hwInitialized = false; 1379 boolean contentInsetsChanged = false; 1380 boolean hadSurface = mSurface.isValid(); 1381 1382 try { 1383 if (DEBUG_LAYOUT) { 1384 Log.i(TAG, "host=w:" + host.getMeasuredWidth() + ", h:" + 1385 host.getMeasuredHeight() + ", params=" + params); 1386 } 1387 1388 final int surfaceGenerationId = mSurface.getGenerationId(); 1389 relayoutResult = relayoutWindow(params, viewVisibility, insetsPending); 1390 if (!mDrawDuringWindowsAnimating) { 1391 mWindowsAnimating |= 1392 (relayoutResult & WindowManagerGlobal.RELAYOUT_RES_ANIMATING) != 0; 1393 } 1394 1395 if (DEBUG_LAYOUT) Log.v(TAG, "relayout: frame=" + frame.toShortString() 1396 + " overscan=" + mPendingOverscanInsets.toShortString() 1397 + " content=" + mPendingContentInsets.toShortString() 1398 + " visible=" + mPendingVisibleInsets.toShortString() 1399 + " surface=" + mSurface); 1400 1401 if (mPendingConfiguration.seq != 0) { 1402 if (DEBUG_CONFIGURATION) Log.v(TAG, "Visible with new config: " 1403 + mPendingConfiguration); 1404 updateConfiguration(mPendingConfiguration, !mFirst); 1405 mPendingConfiguration.seq = 0; 1406 } 1407 1408 final boolean overscanInsetsChanged = !mPendingOverscanInsets.equals( 1409 mAttachInfo.mOverscanInsets); 1410 contentInsetsChanged = !mPendingContentInsets.equals( 1411 mAttachInfo.mContentInsets); 1412 final boolean visibleInsetsChanged = !mPendingVisibleInsets.equals( 1413 mAttachInfo.mVisibleInsets); 1414 if (contentInsetsChanged) { 1415 if (mWidth > 0 && mHeight > 0 && lp != null && 1416 ((lp.systemUiVisibility|lp.subtreeSystemUiVisibility) 1417 & View.SYSTEM_UI_LAYOUT_FLAGS) == 0 && 1418 mSurface != null && mSurface.isValid() && 1419 !mAttachInfo.mTurnOffWindowResizeAnim && 1420 mAttachInfo.mHardwareRenderer != null && 1421 mAttachInfo.mHardwareRenderer.isEnabled() && 1422 mAttachInfo.mHardwareRenderer.validate() && 1423 lp != null && !PixelFormat.formatHasAlpha(lp.format)) { 1424 1425 disposeResizeBuffer(); 1426 1427 boolean completed = false; 1428 HardwareCanvas hwRendererCanvas = mAttachInfo.mHardwareRenderer.getCanvas(); 1429 HardwareCanvas layerCanvas = null; 1430 try { 1431 if (mResizeBuffer == null) { 1432 mResizeBuffer = mAttachInfo.mHardwareRenderer.createHardwareLayer( 1433 mWidth, mHeight, false); 1434 } else if (mResizeBuffer.getWidth() != mWidth || 1435 mResizeBuffer.getHeight() != mHeight) { 1436 mResizeBuffer.resize(mWidth, mHeight); 1437 } 1438 // TODO: should handle create/resize failure 1439 layerCanvas = mResizeBuffer.start(hwRendererCanvas); 1440 final int restoreCount = layerCanvas.save(); 1441 1442 int yoff; 1443 final boolean scrolling = mScroller != null 1444 && mScroller.computeScrollOffset(); 1445 if (scrolling) { 1446 yoff = mScroller.getCurrY(); 1447 mScroller.abortAnimation(); 1448 } else { 1449 yoff = mScrollY; 1450 } 1451 1452 layerCanvas.translate(0, -yoff); 1453 if (mTranslator != null) { 1454 mTranslator.translateCanvas(layerCanvas); 1455 } 1456 1457 DisplayList displayList = mView.mDisplayList; 1458 if (displayList != null && displayList.isValid()) { 1459 layerCanvas.drawDisplayList(displayList, null, 1460 DisplayList.FLAG_CLIP_CHILDREN); 1461 } else { 1462 mView.draw(layerCanvas); 1463 } 1464 1465 drawAccessibilityFocusedDrawableIfNeeded(layerCanvas); 1466 1467 mResizeBufferStartTime = SystemClock.uptimeMillis(); 1468 mResizeBufferDuration = mView.getResources().getInteger( 1469 com.android.internal.R.integer.config_mediumAnimTime); 1470 completed = true; 1471 1472 layerCanvas.restoreToCount(restoreCount); 1473 } catch (OutOfMemoryError e) { 1474 Log.w(TAG, "Not enough memory for content change anim buffer", e); 1475 } finally { 1476 if (mResizeBuffer != null) { 1477 mResizeBuffer.end(hwRendererCanvas); 1478 if (!completed) { 1479 disposeResizeBuffer(); 1480 } 1481 } 1482 } 1483 } 1484 mAttachInfo.mContentInsets.set(mPendingContentInsets); 1485 if (DEBUG_LAYOUT) Log.v(TAG, "Content insets changing to: " 1486 + mAttachInfo.mContentInsets); 1487 } 1488 if (overscanInsetsChanged) { 1489 mAttachInfo.mOverscanInsets.set(mPendingOverscanInsets); 1490 if (DEBUG_LAYOUT) Log.v(TAG, "Overscan insets changing to: " 1491 + mAttachInfo.mOverscanInsets); 1492 // Need to relayout with content insets. 1493 contentInsetsChanged = true; 1494 } 1495 if (contentInsetsChanged || mLastSystemUiVisibility != 1496 mAttachInfo.mSystemUiVisibility || mFitSystemWindowsRequested 1497 || mLastOverscanRequested != mAttachInfo.mOverscanRequested) { 1498 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1499 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1500 mFitSystemWindowsRequested = false; 1501 mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets); 1502 host.fitSystemWindows(mFitSystemWindowsInsets); 1503 } 1504 if (visibleInsetsChanged) { 1505 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1506 if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: " 1507 + mAttachInfo.mVisibleInsets); 1508 } 1509 1510 if (!hadSurface) { 1511 if (mSurface.isValid()) { 1512 // If we are creating a new surface, then we need to 1513 // completely redraw it. Also, when we get to the 1514 // point of drawing it we will hold off and schedule 1515 // a new traversal instead. This is so we can tell the 1516 // window manager about all of the windows being displayed 1517 // before actually drawing them, so it can display then 1518 // all at once. 1519 newSurface = true; 1520 mFullRedrawNeeded = true; 1521 mPreviousTransparentRegion.setEmpty(); 1522 1523 if (mAttachInfo.mHardwareRenderer != null) { 1524 try { 1525 hwInitialized = mAttachInfo.mHardwareRenderer.initialize( 1526 mHolder.getSurface()); 1527 } catch (OutOfResourcesException e) { 1528 handleOutOfResourcesException(e); 1529 return; 1530 } 1531 } 1532 } 1533 } else if (!mSurface.isValid()) { 1534 // If the surface has been removed, then reset the scroll 1535 // positions. 1536 if (mLastScrolledFocus != null) { 1537 mLastScrolledFocus.clear(); 1538 } 1539 mScrollY = mCurScrollY = 0; 1540 if (mScroller != null) { 1541 mScroller.abortAnimation(); 1542 } 1543 disposeResizeBuffer(); 1544 // Our surface is gone 1545 if (mAttachInfo.mHardwareRenderer != null && 1546 mAttachInfo.mHardwareRenderer.isEnabled()) { 1547 mAttachInfo.mHardwareRenderer.destroy(true); 1548 } 1549 } else if (surfaceGenerationId != mSurface.getGenerationId() && 1550 mSurfaceHolder == null && mAttachInfo.mHardwareRenderer != null) { 1551 mFullRedrawNeeded = true; 1552 try { 1553 mAttachInfo.mHardwareRenderer.updateSurface(mHolder.getSurface()); 1554 } catch (OutOfResourcesException e) { 1555 handleOutOfResourcesException(e); 1556 return; 1557 } 1558 } 1559 } catch (RemoteException e) { 1560 } 1561 1562 if (DEBUG_ORIENTATION) Log.v( 1563 TAG, "Relayout returned: frame=" + frame + ", surface=" + mSurface); 1564 1565 attachInfo.mWindowLeft = frame.left; 1566 attachInfo.mWindowTop = frame.top; 1567 1568 // !!FIXME!! This next section handles the case where we did not get the 1569 // window size we asked for. We should avoid this by getting a maximum size from 1570 // the window session beforehand. 1571 if (mWidth != frame.width() || mHeight != frame.height()) { 1572 mWidth = frame.width(); 1573 mHeight = frame.height(); 1574 } 1575 1576 if (mSurfaceHolder != null) { 1577 // The app owns the surface; tell it about what is going on. 1578 if (mSurface.isValid()) { 1579 // XXX .copyFrom() doesn't work! 1580 //mSurfaceHolder.mSurface.copyFrom(mSurface); 1581 mSurfaceHolder.mSurface = mSurface; 1582 } 1583 mSurfaceHolder.setSurfaceFrameSize(mWidth, mHeight); 1584 mSurfaceHolder.mSurfaceLock.unlock(); 1585 if (mSurface.isValid()) { 1586 if (!hadSurface) { 1587 mSurfaceHolder.ungetCallbacks(); 1588 1589 mIsCreating = true; 1590 mSurfaceHolderCallback.surfaceCreated(mSurfaceHolder); 1591 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1592 if (callbacks != null) { 1593 for (SurfaceHolder.Callback c : callbacks) { 1594 c.surfaceCreated(mSurfaceHolder); 1595 } 1596 } 1597 surfaceChanged = true; 1598 } 1599 if (surfaceChanged) { 1600 mSurfaceHolderCallback.surfaceChanged(mSurfaceHolder, 1601 lp.format, mWidth, mHeight); 1602 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1603 if (callbacks != null) { 1604 for (SurfaceHolder.Callback c : callbacks) { 1605 c.surfaceChanged(mSurfaceHolder, lp.format, 1606 mWidth, mHeight); 1607 } 1608 } 1609 } 1610 mIsCreating = false; 1611 } else if (hadSurface) { 1612 mSurfaceHolder.ungetCallbacks(); 1613 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1614 mSurfaceHolderCallback.surfaceDestroyed(mSurfaceHolder); 1615 if (callbacks != null) { 1616 for (SurfaceHolder.Callback c : callbacks) { 1617 c.surfaceDestroyed(mSurfaceHolder); 1618 } 1619 } 1620 mSurfaceHolder.mSurfaceLock.lock(); 1621 try { 1622 mSurfaceHolder.mSurface = new Surface(); 1623 } finally { 1624 mSurfaceHolder.mSurfaceLock.unlock(); 1625 } 1626 } 1627 } 1628 1629 if (mAttachInfo.mHardwareRenderer != null && 1630 mAttachInfo.mHardwareRenderer.isEnabled()) { 1631 if (hwInitialized || 1632 mWidth != mAttachInfo.mHardwareRenderer.getWidth() || 1633 mHeight != mAttachInfo.mHardwareRenderer.getHeight()) { 1634 mAttachInfo.mHardwareRenderer.setup(mWidth, mHeight); 1635 if (!hwInitialized) { 1636 mAttachInfo.mHardwareRenderer.invalidate(mHolder.getSurface()); 1637 mFullRedrawNeeded = true; 1638 } 1639 } 1640 } 1641 1642 if (!mStopped) { 1643 boolean focusChangedDueToTouchMode = ensureTouchModeLocally( 1644 (relayoutResult&WindowManagerGlobal.RELAYOUT_RES_IN_TOUCH_MODE) != 0); 1645 if (focusChangedDueToTouchMode || mWidth != host.getMeasuredWidth() 1646 || mHeight != host.getMeasuredHeight() || contentInsetsChanged) { 1647 int childWidthMeasureSpec = getRootMeasureSpec(mWidth, lp.width); 1648 int childHeightMeasureSpec = getRootMeasureSpec(mHeight, lp.height); 1649 1650 if (DEBUG_LAYOUT) Log.v(TAG, "Ooops, something changed! mWidth=" 1651 + mWidth + " measuredWidth=" + host.getMeasuredWidth() 1652 + " mHeight=" + mHeight 1653 + " measuredHeight=" + host.getMeasuredHeight() 1654 + " coveredInsetsChanged=" + contentInsetsChanged); 1655 1656 // Ask host how big it wants to be 1657 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1658 1659 // Implementation of weights from WindowManager.LayoutParams 1660 // We just grow the dimensions as needed and re-measure if 1661 // needs be 1662 int width = host.getMeasuredWidth(); 1663 int height = host.getMeasuredHeight(); 1664 boolean measureAgain = false; 1665 1666 if (lp.horizontalWeight > 0.0f) { 1667 width += (int) ((mWidth - width) * lp.horizontalWeight); 1668 childWidthMeasureSpec = MeasureSpec.makeMeasureSpec(width, 1669 MeasureSpec.EXACTLY); 1670 measureAgain = true; 1671 } 1672 if (lp.verticalWeight > 0.0f) { 1673 height += (int) ((mHeight - height) * lp.verticalWeight); 1674 childHeightMeasureSpec = MeasureSpec.makeMeasureSpec(height, 1675 MeasureSpec.EXACTLY); 1676 measureAgain = true; 1677 } 1678 1679 if (measureAgain) { 1680 if (DEBUG_LAYOUT) Log.v(TAG, 1681 "And hey let's measure once more: width=" + width 1682 + " height=" + height); 1683 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1684 } 1685 1686 layoutRequested = true; 1687 } 1688 } 1689 } else { 1690 // Not the first pass and no window/insets/visibility change but the window 1691 // may have moved and we need check that and if so to update the left and right 1692 // in the attach info. We translate only the window frame since on window move 1693 // the window manager tells us only for the new frame but the insets are the 1694 // same and we do not want to translate them more than once. 1695 1696 // TODO: Well, we are checking whether the frame has changed similarly 1697 // to how this is done for the insets. This is however incorrect since 1698 // the insets and the frame are translated. For example, the old frame 1699 // was (1, 1 - 1, 1) and was translated to say (2, 2 - 2, 2), now the new 1700 // reported frame is (2, 2 - 2, 2) which implies no change but this is not 1701 // true since we are comparing a not translated value to a translated one. 1702 // This scenario is rare but we may want to fix that. 1703 1704 final boolean windowMoved = (attachInfo.mWindowLeft != frame.left 1705 || attachInfo.mWindowTop != frame.top); 1706 if (windowMoved) { 1707 if (mTranslator != null) { 1708 mTranslator.translateRectInScreenToAppWinFrame(frame); 1709 } 1710 attachInfo.mWindowLeft = frame.left; 1711 attachInfo.mWindowTop = frame.top; 1712 } 1713 } 1714 1715 final boolean didLayout = layoutRequested && !mStopped; 1716 boolean triggerGlobalLayoutListener = didLayout 1717 || attachInfo.mRecomputeGlobalAttributes; 1718 if (didLayout) { 1719 performLayout(lp, desiredWindowWidth, desiredWindowHeight); 1720 1721 // By this point all views have been sized and positioned 1722 // We can compute the transparent area 1723 1724 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 1725 // start out transparent 1726 // TODO: AVOID THAT CALL BY CACHING THE RESULT? 1727 host.getLocationInWindow(mTmpLocation); 1728 mTransparentRegion.set(mTmpLocation[0], mTmpLocation[1], 1729 mTmpLocation[0] + host.mRight - host.mLeft, 1730 mTmpLocation[1] + host.mBottom - host.mTop); 1731 1732 host.gatherTransparentRegion(mTransparentRegion); 1733 if (mTranslator != null) { 1734 mTranslator.translateRegionInWindowToScreen(mTransparentRegion); 1735 } 1736 1737 if (!mTransparentRegion.equals(mPreviousTransparentRegion)) { 1738 mPreviousTransparentRegion.set(mTransparentRegion); 1739 mFullRedrawNeeded = true; 1740 // reconfigure window manager 1741 try { 1742 mWindowSession.setTransparentRegion(mWindow, mTransparentRegion); 1743 } catch (RemoteException e) { 1744 } 1745 } 1746 } 1747 1748 if (DBG) { 1749 System.out.println("======================================"); 1750 System.out.println("performTraversals -- after setFrame"); 1751 host.debug(); 1752 } 1753 } 1754 1755 if (triggerGlobalLayoutListener) { 1756 attachInfo.mRecomputeGlobalAttributes = false; 1757 attachInfo.mTreeObserver.dispatchOnGlobalLayout(); 1758 } 1759 1760 if (computesInternalInsets) { 1761 // Clear the original insets. 1762 final ViewTreeObserver.InternalInsetsInfo insets = attachInfo.mGivenInternalInsets; 1763 insets.reset(); 1764 1765 // Compute new insets in place. 1766 attachInfo.mTreeObserver.dispatchOnComputeInternalInsets(insets); 1767 1768 // Tell the window manager. 1769 if (insetsPending || !mLastGivenInsets.equals(insets)) { 1770 mLastGivenInsets.set(insets); 1771 1772 // Translate insets to screen coordinates if needed. 1773 final Rect contentInsets; 1774 final Rect visibleInsets; 1775 final Region touchableRegion; 1776 if (mTranslator != null) { 1777 contentInsets = mTranslator.getTranslatedContentInsets(insets.contentInsets); 1778 visibleInsets = mTranslator.getTranslatedVisibleInsets(insets.visibleInsets); 1779 touchableRegion = mTranslator.getTranslatedTouchableArea(insets.touchableRegion); 1780 } else { 1781 contentInsets = insets.contentInsets; 1782 visibleInsets = insets.visibleInsets; 1783 touchableRegion = insets.touchableRegion; 1784 } 1785 1786 try { 1787 mWindowSession.setInsets(mWindow, insets.mTouchableInsets, 1788 contentInsets, visibleInsets, touchableRegion); 1789 } catch (RemoteException e) { 1790 } 1791 } 1792 } 1793 1794 boolean skipDraw = false; 1795 1796 if (mFirst) { 1797 // handle first focus request 1798 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: mView.hasFocus()=" 1799 + mView.hasFocus()); 1800 if (mView != null) { 1801 if (!mView.hasFocus()) { 1802 mView.requestFocus(View.FOCUS_FORWARD); 1803 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: requested focused view=" 1804 + mView.findFocus()); 1805 } else { 1806 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: existing focused view=" 1807 + mView.findFocus()); 1808 } 1809 } 1810 if ((relayoutResult & WindowManagerGlobal.RELAYOUT_RES_ANIMATING) != 0) { 1811 // The first time we relayout the window, if the system is 1812 // doing window animations, we want to hold of on any future 1813 // draws until the animation is done. 1814 mWindowsAnimating = true; 1815 } 1816 } else if (mWindowsAnimating) { 1817 skipDraw = true; 1818 } 1819 1820 mFirst = false; 1821 mWillDrawSoon = false; 1822 mNewSurfaceNeeded = false; 1823 mViewVisibility = viewVisibility; 1824 1825 if (mAttachInfo.mHasWindowFocus && !isInLocalFocusMode()) { 1826 final boolean imTarget = WindowManager.LayoutParams 1827 .mayUseInputMethod(mWindowAttributes.flags); 1828 if (imTarget != mLastWasImTarget) { 1829 mLastWasImTarget = imTarget; 1830 InputMethodManager imm = InputMethodManager.peekInstance(); 1831 if (imm != null && imTarget) { 1832 imm.startGettingWindowFocus(mView); 1833 imm.onWindowFocus(mView, mView.findFocus(), 1834 mWindowAttributes.softInputMode, 1835 !mHasHadWindowFocus, mWindowAttributes.flags); 1836 } 1837 } 1838 } 1839 1840 // Remember if we must report the next draw. 1841 if ((relayoutResult & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 1842 mReportNextDraw = true; 1843 } 1844 1845 boolean cancelDraw = attachInfo.mTreeObserver.dispatchOnPreDraw() || 1846 viewVisibility != View.VISIBLE; 1847 1848 if (!cancelDraw && !newSurface) { 1849 if (!skipDraw || mReportNextDraw) { 1850 if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 1851 for (int i = 0; i < mPendingTransitions.size(); ++i) { 1852 mPendingTransitions.get(i).startChangingAnimations(); 1853 } 1854 mPendingTransitions.clear(); 1855 } 1856 1857 performDraw(); 1858 } 1859 } else { 1860 if (viewVisibility == View.VISIBLE) { 1861 // Try again 1862 scheduleTraversals(); 1863 } else if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 1864 for (int i = 0; i < mPendingTransitions.size(); ++i) { 1865 mPendingTransitions.get(i).endChangingAnimations(); 1866 } 1867 mPendingTransitions.clear(); 1868 } 1869 } 1870 1871 mIsInTraversal = false; 1872 } 1873 1874 private void handleOutOfResourcesException(Surface.OutOfResourcesException e) { 1875 Log.e(TAG, "OutOfResourcesException initializing HW surface", e); 1876 try { 1877 if (!mWindowSession.outOfMemory(mWindow) && 1878 Process.myUid() != Process.SYSTEM_UID) { 1879 Slog.w(TAG, "No processes killed for memory; killing self"); 1880 Process.killProcess(Process.myPid()); 1881 } 1882 } catch (RemoteException ex) { 1883 } 1884 mLayoutRequested = true; // ask wm for a new surface next time. 1885 } 1886 1887 private void performMeasure(int childWidthMeasureSpec, int childHeightMeasureSpec) { 1888 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "measure"); 1889 try { 1890 mView.measure(childWidthMeasureSpec, childHeightMeasureSpec); 1891 } finally { 1892 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 1893 } 1894 } 1895 1896 /** 1897 * Called by {@link android.view.View#isInLayout()} to determine whether the view hierarchy 1898 * is currently undergoing a layout pass. 1899 * 1900 * @return whether the view hierarchy is currently undergoing a layout pass 1901 */ 1902 boolean isInLayout() { 1903 return mInLayout; 1904 } 1905 1906 /** 1907 * Called by {@link android.view.View#requestLayout()} if the view hierarchy is currently 1908 * undergoing a layout pass. requestLayout() should not generally be called during layout, 1909 * unless the container hierarchy knows what it is doing (i.e., it is fine as long as 1910 * all children in that container hierarchy are measured and laid out at the end of the layout 1911 * pass for that container). If requestLayout() is called anyway, we handle it correctly 1912 * by registering all requesters during a frame as it proceeds. At the end of the frame, 1913 * we check all of those views to see if any still have pending layout requests, which 1914 * indicates that they were not correctly handled by their container hierarchy. If that is 1915 * the case, we clear all such flags in the tree, to remove the buggy flag state that leads 1916 * to blank containers, and force a second request/measure/layout pass in this frame. If 1917 * more requestLayout() calls are received during that second layout pass, we post those 1918 * requests to the next frame to avoid possible infinite loops. 1919 * 1920 * <p>The return value from this method indicates whether the request should proceed 1921 * (if it is a request during the first layout pass) or should be skipped and posted to the 1922 * next frame (if it is a request during the second layout pass).</p> 1923 * 1924 * @param view the view that requested the layout. 1925 * 1926 * @return true if request should proceed, false otherwise. 1927 */ 1928 boolean requestLayoutDuringLayout(final View view) { 1929 if (view.mParent == null || view.mAttachInfo == null) { 1930 // Would not normally trigger another layout, so just let it pass through as usual 1931 return true; 1932 } 1933 if (!mLayoutRequesters.contains(view)) { 1934 mLayoutRequesters.add(view); 1935 } 1936 if (!mHandlingLayoutInLayoutRequest) { 1937 // Let the request proceed normally; it will be processed in a second layout pass 1938 // if necessary 1939 return true; 1940 } else { 1941 // Don't let the request proceed during the second layout pass. 1942 // It will post to the next frame instead. 1943 return false; 1944 } 1945 } 1946 1947 private void performLayout(WindowManager.LayoutParams lp, int desiredWindowWidth, 1948 int desiredWindowHeight) { 1949 mLayoutRequested = false; 1950 mScrollMayChange = true; 1951 mInLayout = true; 1952 1953 final View host = mView; 1954 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) { 1955 Log.v(TAG, "Laying out " + host + " to (" + 1956 host.getMeasuredWidth() + ", " + host.getMeasuredHeight() + ")"); 1957 } 1958 1959 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "layout"); 1960 try { 1961 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 1962 1963 mInLayout = false; 1964 int numViewsRequestingLayout = mLayoutRequesters.size(); 1965 if (numViewsRequestingLayout > 0) { 1966 // requestLayout() was called during layout. 1967 // If no layout-request flags are set on the requesting views, there is no problem. 1968 // If some requests are still pending, then we need to clear those flags and do 1969 // a full request/measure/layout pass to handle this situation. 1970 ArrayList<View> validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, 1971 false); 1972 if (validLayoutRequesters != null) { 1973 // Set this flag to indicate that any further requests are happening during 1974 // the second pass, which may result in posting those requests to the next 1975 // frame instead 1976 mHandlingLayoutInLayoutRequest = true; 1977 1978 // Process fresh layout requests, then measure and layout 1979 int numValidRequests = validLayoutRequesters.size(); 1980 for (int i = 0; i < numValidRequests; ++i) { 1981 final View view = validLayoutRequesters.get(i); 1982 Log.w("View", "requestLayout() improperly called by " + view + 1983 " during layout: running second layout pass"); 1984 view.requestLayout(); 1985 } 1986 measureHierarchy(host, lp, mView.getContext().getResources(), 1987 desiredWindowWidth, desiredWindowHeight); 1988 mInLayout = true; 1989 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 1990 1991 mHandlingLayoutInLayoutRequest = false; 1992 1993 // Check the valid requests again, this time without checking/clearing the 1994 // layout flags, since requests happening during the second pass get noop'd 1995 validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, true); 1996 if (validLayoutRequesters != null) { 1997 final ArrayList<View> finalRequesters = validLayoutRequesters; 1998 // Post second-pass requests to the next frame 1999 getRunQueue().post(new Runnable() { 2000 @Override 2001 public void run() { 2002 int numValidRequests = finalRequesters.size(); 2003 for (int i = 0; i < numValidRequests; ++i) { 2004 final View view = finalRequesters.get(i); 2005 Log.w("View", "requestLayout() improperly called by " + view + 2006 " during second layout pass: posting in next frame"); 2007 view.requestLayout(); 2008 } 2009 } 2010 }); 2011 } 2012 } 2013 2014 } 2015 } finally { 2016 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2017 } 2018 mInLayout = false; 2019 } 2020 2021 /** 2022 * This method is called during layout when there have been calls to requestLayout() during 2023 * layout. It walks through the list of views that requested layout to determine which ones 2024 * still need it, based on visibility in the hierarchy and whether they have already been 2025 * handled (as is usually the case with ListView children). 2026 * 2027 * @param layoutRequesters The list of views that requested layout during layout 2028 * @param secondLayoutRequests Whether the requests were issued during the second layout pass. 2029 * If so, the FORCE_LAYOUT flag was not set on requesters. 2030 * @return A list of the actual views that still need to be laid out. 2031 */ 2032 private ArrayList<View> getValidLayoutRequesters(ArrayList<View> layoutRequesters, 2033 boolean secondLayoutRequests) { 2034 2035 int numViewsRequestingLayout = layoutRequesters.size(); 2036 ArrayList<View> validLayoutRequesters = null; 2037 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2038 View view = layoutRequesters.get(i); 2039 if (view != null && view.mAttachInfo != null && view.mParent != null && 2040 (secondLayoutRequests || (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) == 2041 View.PFLAG_FORCE_LAYOUT)) { 2042 boolean gone = false; 2043 View parent = view; 2044 // Only trigger new requests for views in a non-GONE hierarchy 2045 while (parent != null) { 2046 if ((parent.mViewFlags & View.VISIBILITY_MASK) == View.GONE) { 2047 gone = true; 2048 break; 2049 } 2050 if (parent.mParent instanceof View) { 2051 parent = (View) parent.mParent; 2052 } else { 2053 parent = null; 2054 } 2055 } 2056 if (!gone) { 2057 if (validLayoutRequesters == null) { 2058 validLayoutRequesters = new ArrayList<View>(); 2059 } 2060 validLayoutRequesters.add(view); 2061 } 2062 } 2063 } 2064 if (!secondLayoutRequests) { 2065 // If we're checking the layout flags, then we need to clean them up also 2066 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2067 View view = layoutRequesters.get(i); 2068 while (view != null && 2069 (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) != 0) { 2070 view.mPrivateFlags &= ~View.PFLAG_FORCE_LAYOUT; 2071 if (view.mParent instanceof View) { 2072 view = (View) view.mParent; 2073 } else { 2074 view = null; 2075 } 2076 } 2077 } 2078 } 2079 layoutRequesters.clear(); 2080 return validLayoutRequesters; 2081 } 2082 2083 @Override 2084 public void requestTransparentRegion(View child) { 2085 // the test below should not fail unless someone is messing with us 2086 checkThread(); 2087 if (mView == child) { 2088 mView.mPrivateFlags |= View.PFLAG_REQUEST_TRANSPARENT_REGIONS; 2089 // Need to make sure we re-evaluate the window attributes next 2090 // time around, to ensure the window has the correct format. 2091 mWindowAttributesChanged = true; 2092 mWindowAttributesChangesFlag = 0; 2093 requestLayout(); 2094 } 2095 } 2096 2097 /** 2098 * Figures out the measure spec for the root view in a window based on it's 2099 * layout params. 2100 * 2101 * @param windowSize 2102 * The available width or height of the window 2103 * 2104 * @param rootDimension 2105 * The layout params for one dimension (width or height) of the 2106 * window. 2107 * 2108 * @return The measure spec to use to measure the root view. 2109 */ 2110 private static int getRootMeasureSpec(int windowSize, int rootDimension) { 2111 int measureSpec; 2112 switch (rootDimension) { 2113 2114 case ViewGroup.LayoutParams.MATCH_PARENT: 2115 // Window can't resize. Force root view to be windowSize. 2116 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.EXACTLY); 2117 break; 2118 case ViewGroup.LayoutParams.WRAP_CONTENT: 2119 // Window can resize. Set max size for root view. 2120 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.AT_MOST); 2121 break; 2122 default: 2123 // Window wants to be an exact size. Force root view to be that size. 2124 measureSpec = MeasureSpec.makeMeasureSpec(rootDimension, MeasureSpec.EXACTLY); 2125 break; 2126 } 2127 return measureSpec; 2128 } 2129 2130 int mHardwareYOffset; 2131 int mResizeAlpha; 2132 final Paint mResizePaint = new Paint(); 2133 2134 @Override 2135 public void onHardwarePreDraw(HardwareCanvas canvas) { 2136 canvas.translate(0, -mHardwareYOffset); 2137 } 2138 2139 @Override 2140 public void onHardwarePostDraw(HardwareCanvas canvas) { 2141 if (mResizeBuffer != null) { 2142 mResizePaint.setAlpha(mResizeAlpha); 2143 canvas.drawHardwareLayer(mResizeBuffer, 0.0f, mHardwareYOffset, mResizePaint); 2144 } 2145 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2146 } 2147 2148 /** 2149 * @hide 2150 */ 2151 void outputDisplayList(View view) { 2152 if (mAttachInfo != null && mAttachInfo.mHardwareCanvas != null) { 2153 DisplayList displayList = view.getDisplayList(); 2154 if (displayList != null) { 2155 mAttachInfo.mHardwareCanvas.outputDisplayList(displayList); 2156 } 2157 } 2158 } 2159 2160 /** 2161 * @see #PROPERTY_PROFILE_RENDERING 2162 */ 2163 private void profileRendering(boolean enabled) { 2164 if (mProfileRendering) { 2165 mRenderProfilingEnabled = enabled; 2166 2167 if (mRenderProfiler != null) { 2168 mChoreographer.removeFrameCallback(mRenderProfiler); 2169 } 2170 if (mRenderProfilingEnabled) { 2171 if (mRenderProfiler == null) { 2172 mRenderProfiler = new Choreographer.FrameCallback() { 2173 @Override 2174 public void doFrame(long frameTimeNanos) { 2175 mDirty.set(0, 0, mWidth, mHeight); 2176 scheduleTraversals(); 2177 if (mRenderProfilingEnabled) { 2178 mChoreographer.postFrameCallback(mRenderProfiler); 2179 } 2180 } 2181 }; 2182 } 2183 mChoreographer.postFrameCallback(mRenderProfiler); 2184 } else { 2185 mRenderProfiler = null; 2186 } 2187 } 2188 } 2189 2190 /** 2191 * Called from draw() when DEBUG_FPS is enabled 2192 */ 2193 private void trackFPS() { 2194 // Tracks frames per second drawn. First value in a series of draws may be bogus 2195 // because it down not account for the intervening idle time 2196 long nowTime = System.currentTimeMillis(); 2197 if (mFpsStartTime < 0) { 2198 mFpsStartTime = mFpsPrevTime = nowTime; 2199 mFpsNumFrames = 0; 2200 } else { 2201 ++mFpsNumFrames; 2202 String thisHash = Integer.toHexString(System.identityHashCode(this)); 2203 long frameTime = nowTime - mFpsPrevTime; 2204 long totalTime = nowTime - mFpsStartTime; 2205 Log.v(TAG, "0x" + thisHash + "\tFrame time:\t" + frameTime); 2206 mFpsPrevTime = nowTime; 2207 if (totalTime > 1000) { 2208 float fps = (float) mFpsNumFrames * 1000 / totalTime; 2209 Log.v(TAG, "0x" + thisHash + "\tFPS:\t" + fps); 2210 mFpsStartTime = nowTime; 2211 mFpsNumFrames = 0; 2212 } 2213 } 2214 } 2215 2216 private void performDraw() { 2217 if (!mAttachInfo.mScreenOn && !mReportNextDraw) { 2218 return; 2219 } 2220 2221 final boolean fullRedrawNeeded = mFullRedrawNeeded; 2222 mFullRedrawNeeded = false; 2223 2224 mIsDrawing = true; 2225 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "draw"); 2226 try { 2227 draw(fullRedrawNeeded); 2228 } finally { 2229 mIsDrawing = false; 2230 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2231 } 2232 2233 if (mReportNextDraw) { 2234 mReportNextDraw = false; 2235 2236 if (LOCAL_LOGV) { 2237 Log.v(TAG, "FINISHED DRAWING: " + mWindowAttributes.getTitle()); 2238 } 2239 if (mSurfaceHolder != null && mSurface.isValid()) { 2240 mSurfaceHolderCallback.surfaceRedrawNeeded(mSurfaceHolder); 2241 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 2242 if (callbacks != null) { 2243 for (SurfaceHolder.Callback c : callbacks) { 2244 if (c instanceof SurfaceHolder.Callback2) { 2245 ((SurfaceHolder.Callback2)c).surfaceRedrawNeeded( 2246 mSurfaceHolder); 2247 } 2248 } 2249 } 2250 } 2251 try { 2252 mWindowSession.finishDrawing(mWindow); 2253 } catch (RemoteException e) { 2254 } 2255 } 2256 } 2257 2258 private void draw(boolean fullRedrawNeeded) { 2259 Surface surface = mSurface; 2260 if (!surface.isValid()) { 2261 return; 2262 } 2263 2264 if (DEBUG_FPS) { 2265 trackFPS(); 2266 } 2267 2268 if (!sFirstDrawComplete) { 2269 synchronized (sFirstDrawHandlers) { 2270 sFirstDrawComplete = true; 2271 final int count = sFirstDrawHandlers.size(); 2272 for (int i = 0; i< count; i++) { 2273 mHandler.post(sFirstDrawHandlers.get(i)); 2274 } 2275 } 2276 } 2277 2278 scrollToRectOrFocus(null, false); 2279 2280 final AttachInfo attachInfo = mAttachInfo; 2281 if (attachInfo.mViewScrollChanged) { 2282 attachInfo.mViewScrollChanged = false; 2283 attachInfo.mTreeObserver.dispatchOnScrollChanged(); 2284 } 2285 2286 int yoff; 2287 boolean animating = mScroller != null && mScroller.computeScrollOffset(); 2288 if (animating) { 2289 yoff = mScroller.getCurrY(); 2290 } else { 2291 yoff = mScrollY; 2292 } 2293 if (mCurScrollY != yoff) { 2294 mCurScrollY = yoff; 2295 fullRedrawNeeded = true; 2296 } 2297 2298 final float appScale = attachInfo.mApplicationScale; 2299 final boolean scalingRequired = attachInfo.mScalingRequired; 2300 2301 int resizeAlpha = 0; 2302 if (mResizeBuffer != null) { 2303 long deltaTime = SystemClock.uptimeMillis() - mResizeBufferStartTime; 2304 if (deltaTime < mResizeBufferDuration) { 2305 float amt = deltaTime/(float) mResizeBufferDuration; 2306 amt = mResizeInterpolator.getInterpolation(amt); 2307 animating = true; 2308 resizeAlpha = 255 - (int)(amt*255); 2309 } else { 2310 disposeResizeBuffer(); 2311 } 2312 } 2313 2314 final Rect dirty = mDirty; 2315 if (mSurfaceHolder != null) { 2316 // The app owns the surface, we won't draw. 2317 dirty.setEmpty(); 2318 if (animating) { 2319 if (mScroller != null) { 2320 mScroller.abortAnimation(); 2321 } 2322 disposeResizeBuffer(); 2323 } 2324 return; 2325 } 2326 2327 if (fullRedrawNeeded) { 2328 attachInfo.mIgnoreDirtyState = true; 2329 dirty.set(0, 0, (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 2330 } 2331 2332 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2333 Log.v(TAG, "Draw " + mView + "/" 2334 + mWindowAttributes.getTitle() 2335 + ": dirty={" + dirty.left + "," + dirty.top 2336 + "," + dirty.right + "," + dirty.bottom + "} surface=" 2337 + surface + " surface.isValid()=" + surface.isValid() + ", appScale:" + 2338 appScale + ", width=" + mWidth + ", height=" + mHeight); 2339 } 2340 2341 invalidateDisplayLists(); 2342 2343 attachInfo.mTreeObserver.dispatchOnDraw(); 2344 2345 if (!dirty.isEmpty() || mIsAnimating) { 2346 if (attachInfo.mHardwareRenderer != null && attachInfo.mHardwareRenderer.isEnabled()) { 2347 // Draw with hardware renderer. 2348 mIsAnimating = false; 2349 mHardwareYOffset = yoff; 2350 mResizeAlpha = resizeAlpha; 2351 2352 mCurrentDirty.set(dirty); 2353 dirty.setEmpty(); 2354 2355 attachInfo.mHardwareRenderer.draw(mView, attachInfo, this, 2356 animating ? null : mCurrentDirty); 2357 } else { 2358 // If we get here with a disabled & requested hardware renderer, something went 2359 // wrong (an invalidate posted right before we destroyed the hardware surface 2360 // for instance) so we should just bail out. Locking the surface with software 2361 // rendering at this point would lock it forever and prevent hardware renderer 2362 // from doing its job when it comes back. 2363 // Before we request a new frame we must however attempt to reinitiliaze the 2364 // hardware renderer if it's in requested state. This would happen after an 2365 // eglTerminate() for instance. 2366 if (attachInfo.mHardwareRenderer != null && 2367 !attachInfo.mHardwareRenderer.isEnabled() && 2368 attachInfo.mHardwareRenderer.isRequested()) { 2369 2370 try { 2371 attachInfo.mHardwareRenderer.initializeIfNeeded(mWidth, mHeight, 2372 mHolder.getSurface()); 2373 } catch (OutOfResourcesException e) { 2374 handleOutOfResourcesException(e); 2375 return; 2376 } 2377 2378 mFullRedrawNeeded = true; 2379 scheduleTraversals(); 2380 return; 2381 } 2382 2383 if (!drawSoftware(surface, attachInfo, yoff, scalingRequired, dirty)) { 2384 return; 2385 } 2386 } 2387 } 2388 2389 if (animating) { 2390 mFullRedrawNeeded = true; 2391 scheduleTraversals(); 2392 } 2393 } 2394 2395 /** 2396 * @return true if drawing was succesfull, false if an error occurred 2397 */ 2398 private boolean drawSoftware(Surface surface, AttachInfo attachInfo, int yoff, 2399 boolean scalingRequired, Rect dirty) { 2400 2401 // Draw with software renderer. 2402 Canvas canvas; 2403 try { 2404 int left = dirty.left; 2405 int top = dirty.top; 2406 int right = dirty.right; 2407 int bottom = dirty.bottom; 2408 2409 canvas = mSurface.lockCanvas(dirty); 2410 2411 // The dirty rectangle can be modified by Surface.lockCanvas() 2412 //noinspection ConstantConditions 2413 if (left != dirty.left || top != dirty.top || right != dirty.right || 2414 bottom != dirty.bottom) { 2415 attachInfo.mIgnoreDirtyState = true; 2416 } 2417 2418 // TODO: Do this in native 2419 canvas.setDensity(mDensity); 2420 } catch (Surface.OutOfResourcesException e) { 2421 handleOutOfResourcesException(e); 2422 return false; 2423 } catch (IllegalArgumentException e) { 2424 Log.e(TAG, "Could not lock surface", e); 2425 // Don't assume this is due to out of memory, it could be 2426 // something else, and if it is something else then we could 2427 // kill stuff (or ourself) for no reason. 2428 mLayoutRequested = true; // ask wm for a new surface next time. 2429 return false; 2430 } 2431 2432 try { 2433 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2434 Log.v(TAG, "Surface " + surface + " drawing to bitmap w=" 2435 + canvas.getWidth() + ", h=" + canvas.getHeight()); 2436 //canvas.drawARGB(255, 255, 0, 0); 2437 } 2438 2439 // If this bitmap's format includes an alpha channel, we 2440 // need to clear it before drawing so that the child will 2441 // properly re-composite its drawing on a transparent 2442 // background. This automatically respects the clip/dirty region 2443 // or 2444 // If we are applying an offset, we need to clear the area 2445 // where the offset doesn't appear to avoid having garbage 2446 // left in the blank areas. 2447 if (!canvas.isOpaque() || yoff != 0) { 2448 canvas.drawColor(0, PorterDuff.Mode.CLEAR); 2449 } 2450 2451 dirty.setEmpty(); 2452 mIsAnimating = false; 2453 attachInfo.mDrawingTime = SystemClock.uptimeMillis(); 2454 mView.mPrivateFlags |= View.PFLAG_DRAWN; 2455 2456 if (DEBUG_DRAW) { 2457 Context cxt = mView.getContext(); 2458 Log.i(TAG, "Drawing: package:" + cxt.getPackageName() + 2459 ", metrics=" + cxt.getResources().getDisplayMetrics() + 2460 ", compatibilityInfo=" + cxt.getResources().getCompatibilityInfo()); 2461 } 2462 try { 2463 canvas.translate(0, -yoff); 2464 if (mTranslator != null) { 2465 mTranslator.translateCanvas(canvas); 2466 } 2467 canvas.setScreenDensity(scalingRequired ? mNoncompatDensity : 0); 2468 attachInfo.mSetIgnoreDirtyState = false; 2469 2470 mView.draw(canvas); 2471 2472 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2473 } finally { 2474 if (!attachInfo.mSetIgnoreDirtyState) { 2475 // Only clear the flag if it was not set during the mView.draw() call 2476 attachInfo.mIgnoreDirtyState = false; 2477 } 2478 } 2479 } finally { 2480 try { 2481 surface.unlockCanvasAndPost(canvas); 2482 } catch (IllegalArgumentException e) { 2483 Log.e(TAG, "Could not unlock surface", e); 2484 mLayoutRequested = true; // ask wm for a new surface next time. 2485 //noinspection ReturnInsideFinallyBlock 2486 return false; 2487 } 2488 2489 if (LOCAL_LOGV) { 2490 Log.v(TAG, "Surface " + surface + " unlockCanvasAndPost"); 2491 } 2492 } 2493 return true; 2494 } 2495 2496 /** 2497 * We want to draw a highlight around the current accessibility focused. 2498 * Since adding a style for all possible view is not a viable option we 2499 * have this specialized drawing method. 2500 * 2501 * Note: We are doing this here to be able to draw the highlight for 2502 * virtual views in addition to real ones. 2503 * 2504 * @param canvas The canvas on which to draw. 2505 */ 2506 private void drawAccessibilityFocusedDrawableIfNeeded(Canvas canvas) { 2507 AccessibilityManager manager = AccessibilityManager.getInstance(mView.mContext); 2508 if (!manager.isEnabled() || !manager.isTouchExplorationEnabled()) { 2509 return; 2510 } 2511 if (mAccessibilityFocusedHost == null || mAccessibilityFocusedHost.mAttachInfo == null) { 2512 return; 2513 } 2514 Drawable drawable = getAccessibilityFocusedDrawable(); 2515 if (drawable == null) { 2516 return; 2517 } 2518 AccessibilityNodeProvider provider = 2519 mAccessibilityFocusedHost.getAccessibilityNodeProvider(); 2520 Rect bounds = mView.mAttachInfo.mTmpInvalRect; 2521 if (provider == null) { 2522 mAccessibilityFocusedHost.getBoundsOnScreen(bounds); 2523 } else { 2524 if (mAccessibilityFocusedVirtualView == null) { 2525 return; 2526 } 2527 mAccessibilityFocusedVirtualView.getBoundsInScreen(bounds); 2528 } 2529 bounds.offset(-mAttachInfo.mWindowLeft, -mAttachInfo.mWindowTop); 2530 bounds.intersect(0, 0, mAttachInfo.mViewRootImpl.mWidth, mAttachInfo.mViewRootImpl.mHeight); 2531 drawable.setBounds(bounds); 2532 drawable.draw(canvas); 2533 } 2534 2535 private Drawable getAccessibilityFocusedDrawable() { 2536 if (mAttachInfo != null) { 2537 // Lazily load the accessibility focus drawable. 2538 if (mAttachInfo.mAccessibilityFocusDrawable == null) { 2539 TypedValue value = new TypedValue(); 2540 final boolean resolved = mView.mContext.getTheme().resolveAttribute( 2541 R.attr.accessibilityFocusedDrawable, value, true); 2542 if (resolved) { 2543 mAttachInfo.mAccessibilityFocusDrawable = 2544 mView.mContext.getResources().getDrawable(value.resourceId); 2545 } 2546 } 2547 return mAttachInfo.mAccessibilityFocusDrawable; 2548 } 2549 return null; 2550 } 2551 2552 void invalidateDisplayLists() { 2553 final ArrayList<DisplayList> displayLists = mDisplayLists; 2554 final int count = displayLists.size(); 2555 2556 for (int i = 0; i < count; i++) { 2557 final DisplayList displayList = displayLists.get(i); 2558 if (displayList.isDirty()) { 2559 displayList.reset(); 2560 } 2561 } 2562 2563 displayLists.clear(); 2564 } 2565 2566 /** 2567 * @hide 2568 */ 2569 public void setDrawDuringWindowsAnimating(boolean value) { 2570 mDrawDuringWindowsAnimating = value; 2571 if (value) { 2572 handleDispatchDoneAnimating(); 2573 } 2574 } 2575 2576 boolean scrollToRectOrFocus(Rect rectangle, boolean immediate) { 2577 final View.AttachInfo attachInfo = mAttachInfo; 2578 final Rect ci = attachInfo.mContentInsets; 2579 final Rect vi = attachInfo.mVisibleInsets; 2580 int scrollY = 0; 2581 boolean handled = false; 2582 2583 if (vi.left > ci.left || vi.top > ci.top 2584 || vi.right > ci.right || vi.bottom > ci.bottom) { 2585 // We'll assume that we aren't going to change the scroll 2586 // offset, since we want to avoid that unless it is actually 2587 // going to make the focus visible... otherwise we scroll 2588 // all over the place. 2589 scrollY = mScrollY; 2590 // We can be called for two different situations: during a draw, 2591 // to update the scroll position if the focus has changed (in which 2592 // case 'rectangle' is null), or in response to a 2593 // requestChildRectangleOnScreen() call (in which case 'rectangle' 2594 // is non-null and we just want to scroll to whatever that 2595 // rectangle is). 2596 final View focus = mView.findFocus(); 2597 if (focus == null) { 2598 return false; 2599 } 2600 View lastScrolledFocus = (mLastScrolledFocus != null) ? mLastScrolledFocus.get() : null; 2601 if (focus != lastScrolledFocus) { 2602 // If the focus has changed, then ignore any requests to scroll 2603 // to a rectangle; first we want to make sure the entire focus 2604 // view is visible. 2605 rectangle = null; 2606 } 2607 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Eval scroll: focus=" + focus 2608 + " rectangle=" + rectangle + " ci=" + ci 2609 + " vi=" + vi); 2610 if (focus == lastScrolledFocus && !mScrollMayChange && rectangle == null) { 2611 // Optimization: if the focus hasn't changed since last 2612 // time, and no layout has happened, then just leave things 2613 // as they are. 2614 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Keeping scroll y=" 2615 + mScrollY + " vi=" + vi.toShortString()); 2616 } else { 2617 // We need to determine if the currently focused view is 2618 // within the visible part of the window and, if not, apply 2619 // a pan so it can be seen. 2620 mLastScrolledFocus = new WeakReference<View>(focus); 2621 mScrollMayChange = false; 2622 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Need to scroll?"); 2623 // Try to find the rectangle from the focus view. 2624 if (focus.getGlobalVisibleRect(mVisRect, null)) { 2625 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Root w=" 2626 + mView.getWidth() + " h=" + mView.getHeight() 2627 + " ci=" + ci.toShortString() 2628 + " vi=" + vi.toShortString()); 2629 if (rectangle == null) { 2630 focus.getFocusedRect(mTempRect); 2631 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Focus " + focus 2632 + ": focusRect=" + mTempRect.toShortString()); 2633 if (mView instanceof ViewGroup) { 2634 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 2635 focus, mTempRect); 2636 } 2637 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2638 "Focus in window: focusRect=" 2639 + mTempRect.toShortString() 2640 + " visRect=" + mVisRect.toShortString()); 2641 } else { 2642 mTempRect.set(rectangle); 2643 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2644 "Request scroll to rect: " 2645 + mTempRect.toShortString() 2646 + " visRect=" + mVisRect.toShortString()); 2647 } 2648 if (mTempRect.intersect(mVisRect)) { 2649 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2650 "Focus window visible rect: " 2651 + mTempRect.toShortString()); 2652 if (mTempRect.height() > 2653 (mView.getHeight()-vi.top-vi.bottom)) { 2654 // If the focus simply is not going to fit, then 2655 // best is probably just to leave things as-is. 2656 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2657 "Too tall; leaving scrollY=" + scrollY); 2658 } else if ((mTempRect.top-scrollY) < vi.top) { 2659 scrollY -= vi.top - (mTempRect.top-scrollY); 2660 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2661 "Top covered; scrollY=" + scrollY); 2662 } else if ((mTempRect.bottom-scrollY) 2663 > (mView.getHeight()-vi.bottom)) { 2664 scrollY += (mTempRect.bottom-scrollY) 2665 - (mView.getHeight()-vi.bottom); 2666 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2667 "Bottom covered; scrollY=" + scrollY); 2668 } 2669 handled = true; 2670 } 2671 } 2672 } 2673 } 2674 2675 if (scrollY != mScrollY) { 2676 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Pan scroll changed: old=" 2677 + mScrollY + " , new=" + scrollY); 2678 if (!immediate && mResizeBuffer == null) { 2679 if (mScroller == null) { 2680 mScroller = new Scroller(mView.getContext()); 2681 } 2682 mScroller.startScroll(0, mScrollY, 0, scrollY-mScrollY); 2683 } else if (mScroller != null) { 2684 mScroller.abortAnimation(); 2685 } 2686 mScrollY = scrollY; 2687 } 2688 2689 return handled; 2690 } 2691 2692 /** 2693 * @hide 2694 */ 2695 public View getAccessibilityFocusedHost() { 2696 return mAccessibilityFocusedHost; 2697 } 2698 2699 /** 2700 * @hide 2701 */ 2702 public AccessibilityNodeInfo getAccessibilityFocusedVirtualView() { 2703 return mAccessibilityFocusedVirtualView; 2704 } 2705 2706 void setAccessibilityFocus(View view, AccessibilityNodeInfo node) { 2707 // If we have a virtual view with accessibility focus we need 2708 // to clear the focus and invalidate the virtual view bounds. 2709 if (mAccessibilityFocusedVirtualView != null) { 2710 2711 AccessibilityNodeInfo focusNode = mAccessibilityFocusedVirtualView; 2712 View focusHost = mAccessibilityFocusedHost; 2713 2714 // Wipe the state of the current accessibility focus since 2715 // the call into the provider to clear accessibility focus 2716 // will fire an accessibility event which will end up calling 2717 // this method and we want to have clean state when this 2718 // invocation happens. 2719 mAccessibilityFocusedHost = null; 2720 mAccessibilityFocusedVirtualView = null; 2721 2722 // Clear accessibility focus on the host after clearing state since 2723 // this method may be reentrant. 2724 focusHost.clearAccessibilityFocusNoCallbacks(); 2725 2726 AccessibilityNodeProvider provider = focusHost.getAccessibilityNodeProvider(); 2727 if (provider != null) { 2728 // Invalidate the area of the cleared accessibility focus. 2729 focusNode.getBoundsInParent(mTempRect); 2730 focusHost.invalidate(mTempRect); 2731 // Clear accessibility focus in the virtual node. 2732 final int virtualNodeId = AccessibilityNodeInfo.getVirtualDescendantId( 2733 focusNode.getSourceNodeId()); 2734 provider.performAction(virtualNodeId, 2735 AccessibilityNodeInfo.ACTION_CLEAR_ACCESSIBILITY_FOCUS, null); 2736 } 2737 focusNode.recycle(); 2738 } 2739 if (mAccessibilityFocusedHost != null) { 2740 // Clear accessibility focus in the view. 2741 mAccessibilityFocusedHost.clearAccessibilityFocusNoCallbacks(); 2742 } 2743 2744 // Set the new focus host and node. 2745 mAccessibilityFocusedHost = view; 2746 mAccessibilityFocusedVirtualView = node; 2747 } 2748 2749 @Override 2750 public void requestChildFocus(View child, View focused) { 2751 if (DEBUG_INPUT_RESIZE) { 2752 Log.v(TAG, "Request child focus: focus now " + focused); 2753 } 2754 checkThread(); 2755 scheduleTraversals(); 2756 } 2757 2758 @Override 2759 public void clearChildFocus(View child) { 2760 if (DEBUG_INPUT_RESIZE) { 2761 Log.v(TAG, "Clearing child focus"); 2762 } 2763 checkThread(); 2764 scheduleTraversals(); 2765 } 2766 2767 @Override 2768 public ViewParent getParentForAccessibility() { 2769 return null; 2770 } 2771 2772 @Override 2773 public void focusableViewAvailable(View v) { 2774 checkThread(); 2775 if (mView != null) { 2776 if (!mView.hasFocus()) { 2777 v.requestFocus(); 2778 } else { 2779 // the one case where will transfer focus away from the current one 2780 // is if the current view is a view group that prefers to give focus 2781 // to its children first AND the view is a descendant of it. 2782 View focused = mView.findFocus(); 2783 if (focused instanceof ViewGroup) { 2784 ViewGroup group = (ViewGroup) focused; 2785 if (group.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 2786 && isViewDescendantOf(v, focused)) { 2787 v.requestFocus(); 2788 } 2789 } 2790 } 2791 } 2792 } 2793 2794 @Override 2795 public void recomputeViewAttributes(View child) { 2796 checkThread(); 2797 if (mView == child) { 2798 mAttachInfo.mRecomputeGlobalAttributes = true; 2799 if (!mWillDrawSoon) { 2800 scheduleTraversals(); 2801 } 2802 } 2803 } 2804 2805 void dispatchDetachedFromWindow() { 2806 if (mView != null && mView.mAttachInfo != null) { 2807 if (mAttachInfo.mHardwareRenderer != null && 2808 mAttachInfo.mHardwareRenderer.isEnabled()) { 2809 mAttachInfo.mHardwareRenderer.validate(); 2810 } 2811 mAttachInfo.mTreeObserver.dispatchOnWindowAttachedChange(false); 2812 mView.dispatchDetachedFromWindow(); 2813 } 2814 2815 mAccessibilityInteractionConnectionManager.ensureNoConnection(); 2816 mAccessibilityManager.removeAccessibilityStateChangeListener( 2817 mAccessibilityInteractionConnectionManager); 2818 removeSendWindowContentChangedCallback(); 2819 2820 destroyHardwareRenderer(); 2821 2822 setAccessibilityFocus(null, null); 2823 2824 mView.assignParent(null); 2825 mView = null; 2826 mAttachInfo.mRootView = null; 2827 mAttachInfo.mSurface = null; 2828 2829 mSurface.release(); 2830 2831 if (mInputQueueCallback != null && mInputQueue != null) { 2832 mInputQueueCallback.onInputQueueDestroyed(mInputQueue); 2833 mInputQueue.dispose(); 2834 mInputQueueCallback = null; 2835 mInputQueue = null; 2836 } 2837 if (mInputEventReceiver != null) { 2838 mInputEventReceiver.dispose(); 2839 mInputEventReceiver = null; 2840 } 2841 try { 2842 mWindowSession.remove(mWindow); 2843 } catch (RemoteException e) { 2844 } 2845 2846 // Dispose the input channel after removing the window so the Window Manager 2847 // doesn't interpret the input channel being closed as an abnormal termination. 2848 if (mInputChannel != null) { 2849 mInputChannel.dispose(); 2850 mInputChannel = null; 2851 } 2852 2853 unscheduleTraversals(); 2854 } 2855 2856 void updateConfiguration(Configuration config, boolean force) { 2857 if (DEBUG_CONFIGURATION) Log.v(TAG, 2858 "Applying new config to window " 2859 + mWindowAttributes.getTitle() 2860 + ": " + config); 2861 2862 CompatibilityInfo ci = mDisplayAdjustments.getCompatibilityInfo(); 2863 if (!ci.equals(CompatibilityInfo.DEFAULT_COMPATIBILITY_INFO)) { 2864 config = new Configuration(config); 2865 ci.applyToConfiguration(mNoncompatDensity, config); 2866 } 2867 2868 synchronized (sConfigCallbacks) { 2869 for (int i=sConfigCallbacks.size()-1; i>=0; i--) { 2870 sConfigCallbacks.get(i).onConfigurationChanged(config); 2871 } 2872 } 2873 if (mView != null) { 2874 // At this point the resources have been updated to 2875 // have the most recent config, whatever that is. Use 2876 // the one in them which may be newer. 2877 config = mView.getResources().getConfiguration(); 2878 if (force || mLastConfiguration.diff(config) != 0) { 2879 final int lastLayoutDirection = mLastConfiguration.getLayoutDirection(); 2880 final int currentLayoutDirection = config.getLayoutDirection(); 2881 mLastConfiguration.setTo(config); 2882 if (lastLayoutDirection != currentLayoutDirection && 2883 mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 2884 mView.setLayoutDirection(currentLayoutDirection); 2885 } 2886 mView.dispatchConfigurationChanged(config); 2887 } 2888 } 2889 2890 mFlipControllerFallbackKeys = 2891 mContext.getResources().getBoolean(R.bool.flip_controller_fallback_keys); 2892 } 2893 2894 /** 2895 * Return true if child is an ancestor of parent, (or equal to the parent). 2896 */ 2897 public static boolean isViewDescendantOf(View child, View parent) { 2898 if (child == parent) { 2899 return true; 2900 } 2901 2902 final ViewParent theParent = child.getParent(); 2903 return (theParent instanceof ViewGroup) && isViewDescendantOf((View) theParent, parent); 2904 } 2905 2906 private static void forceLayout(View view) { 2907 view.forceLayout(); 2908 if (view instanceof ViewGroup) { 2909 ViewGroup group = (ViewGroup) view; 2910 final int count = group.getChildCount(); 2911 for (int i = 0; i < count; i++) { 2912 forceLayout(group.getChildAt(i)); 2913 } 2914 } 2915 } 2916 2917 private final static int MSG_INVALIDATE = 1; 2918 private final static int MSG_INVALIDATE_RECT = 2; 2919 private final static int MSG_DIE = 3; 2920 private final static int MSG_RESIZED = 4; 2921 private final static int MSG_RESIZED_REPORT = 5; 2922 private final static int MSG_WINDOW_FOCUS_CHANGED = 6; 2923 private final static int MSG_DISPATCH_INPUT_EVENT = 7; 2924 private final static int MSG_DISPATCH_APP_VISIBILITY = 8; 2925 private final static int MSG_DISPATCH_GET_NEW_SURFACE = 9; 2926 private final static int MSG_DISPATCH_KEY_FROM_IME = 11; 2927 private final static int MSG_FINISH_INPUT_CONNECTION = 12; 2928 private final static int MSG_CHECK_FOCUS = 13; 2929 private final static int MSG_CLOSE_SYSTEM_DIALOGS = 14; 2930 private final static int MSG_DISPATCH_DRAG_EVENT = 15; 2931 private final static int MSG_DISPATCH_DRAG_LOCATION_EVENT = 16; 2932 private final static int MSG_DISPATCH_SYSTEM_UI_VISIBILITY = 17; 2933 private final static int MSG_UPDATE_CONFIGURATION = 18; 2934 private final static int MSG_PROCESS_INPUT_EVENTS = 19; 2935 private final static int MSG_DISPATCH_SCREEN_STATE = 20; 2936 private final static int MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST = 21; 2937 private final static int MSG_DISPATCH_DONE_ANIMATING = 22; 2938 private final static int MSG_INVALIDATE_WORLD = 23; 2939 private final static int MSG_WINDOW_MOVED = 24; 2940 private final static int MSG_FLUSH_LAYER_UPDATES = 25; 2941 2942 final class ViewRootHandler extends Handler { 2943 @Override 2944 public String getMessageName(Message message) { 2945 switch (message.what) { 2946 case MSG_INVALIDATE: 2947 return "MSG_INVALIDATE"; 2948 case MSG_INVALIDATE_RECT: 2949 return "MSG_INVALIDATE_RECT"; 2950 case MSG_DIE: 2951 return "MSG_DIE"; 2952 case MSG_RESIZED: 2953 return "MSG_RESIZED"; 2954 case MSG_RESIZED_REPORT: 2955 return "MSG_RESIZED_REPORT"; 2956 case MSG_WINDOW_FOCUS_CHANGED: 2957 return "MSG_WINDOW_FOCUS_CHANGED"; 2958 case MSG_DISPATCH_INPUT_EVENT: 2959 return "MSG_DISPATCH_INPUT_EVENT"; 2960 case MSG_DISPATCH_APP_VISIBILITY: 2961 return "MSG_DISPATCH_APP_VISIBILITY"; 2962 case MSG_DISPATCH_GET_NEW_SURFACE: 2963 return "MSG_DISPATCH_GET_NEW_SURFACE"; 2964 case MSG_DISPATCH_KEY_FROM_IME: 2965 return "MSG_DISPATCH_KEY_FROM_IME"; 2966 case MSG_FINISH_INPUT_CONNECTION: 2967 return "MSG_FINISH_INPUT_CONNECTION"; 2968 case MSG_CHECK_FOCUS: 2969 return "MSG_CHECK_FOCUS"; 2970 case MSG_CLOSE_SYSTEM_DIALOGS: 2971 return "MSG_CLOSE_SYSTEM_DIALOGS"; 2972 case MSG_DISPATCH_DRAG_EVENT: 2973 return "MSG_DISPATCH_DRAG_EVENT"; 2974 case MSG_DISPATCH_DRAG_LOCATION_EVENT: 2975 return "MSG_DISPATCH_DRAG_LOCATION_EVENT"; 2976 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: 2977 return "MSG_DISPATCH_SYSTEM_UI_VISIBILITY"; 2978 case MSG_UPDATE_CONFIGURATION: 2979 return "MSG_UPDATE_CONFIGURATION"; 2980 case MSG_PROCESS_INPUT_EVENTS: 2981 return "MSG_PROCESS_INPUT_EVENTS"; 2982 case MSG_DISPATCH_SCREEN_STATE: 2983 return "MSG_DISPATCH_SCREEN_STATE"; 2984 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: 2985 return "MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST"; 2986 case MSG_DISPATCH_DONE_ANIMATING: 2987 return "MSG_DISPATCH_DONE_ANIMATING"; 2988 case MSG_WINDOW_MOVED: 2989 return "MSG_WINDOW_MOVED"; 2990 case MSG_FLUSH_LAYER_UPDATES: 2991 return "MSG_FLUSH_LAYER_UPDATES"; 2992 } 2993 return super.getMessageName(message); 2994 } 2995 2996 @Override 2997 public void handleMessage(Message msg) { 2998 switch (msg.what) { 2999 case MSG_INVALIDATE: 3000 ((View) msg.obj).invalidate(); 3001 break; 3002 case MSG_INVALIDATE_RECT: 3003 final View.AttachInfo.InvalidateInfo info = (View.AttachInfo.InvalidateInfo) msg.obj; 3004 info.target.invalidate(info.left, info.top, info.right, info.bottom); 3005 info.recycle(); 3006 break; 3007 case MSG_PROCESS_INPUT_EVENTS: 3008 mProcessInputEventsScheduled = false; 3009 doProcessInputEvents(); 3010 break; 3011 case MSG_DISPATCH_APP_VISIBILITY: 3012 handleAppVisibility(msg.arg1 != 0); 3013 break; 3014 case MSG_DISPATCH_GET_NEW_SURFACE: 3015 handleGetNewSurface(); 3016 break; 3017 case MSG_RESIZED: { 3018 // Recycled in the fall through... 3019 SomeArgs args = (SomeArgs) msg.obj; 3020 if (mWinFrame.equals(args.arg1) 3021 && mPendingOverscanInsets.equals(args.arg5) 3022 && mPendingContentInsets.equals(args.arg2) 3023 && mPendingVisibleInsets.equals(args.arg3) 3024 && args.arg4 == null) { 3025 break; 3026 } 3027 } // fall through... 3028 case MSG_RESIZED_REPORT: 3029 if (mAdded) { 3030 SomeArgs args = (SomeArgs) msg.obj; 3031 3032 Configuration config = (Configuration) args.arg4; 3033 if (config != null) { 3034 updateConfiguration(config, false); 3035 } 3036 3037 mWinFrame.set((Rect) args.arg1); 3038 mPendingOverscanInsets.set((Rect) args.arg5); 3039 mPendingContentInsets.set((Rect) args.arg2); 3040 mPendingVisibleInsets.set((Rect) args.arg3); 3041 3042 args.recycle(); 3043 3044 if (msg.what == MSG_RESIZED_REPORT) { 3045 mReportNextDraw = true; 3046 } 3047 3048 if (mView != null) { 3049 forceLayout(mView); 3050 } 3051 3052 requestLayout(); 3053 } 3054 break; 3055 case MSG_WINDOW_MOVED: 3056 if (mAdded) { 3057 final int w = mWinFrame.width(); 3058 final int h = mWinFrame.height(); 3059 final int l = msg.arg1; 3060 final int t = msg.arg2; 3061 mWinFrame.left = l; 3062 mWinFrame.right = l + w; 3063 mWinFrame.top = t; 3064 mWinFrame.bottom = t + h; 3065 3066 if (mView != null) { 3067 forceLayout(mView); 3068 } 3069 requestLayout(); 3070 } 3071 break; 3072 case MSG_WINDOW_FOCUS_CHANGED: { 3073 if (mAdded) { 3074 boolean hasWindowFocus = msg.arg1 != 0; 3075 mAttachInfo.mHasWindowFocus = hasWindowFocus; 3076 3077 profileRendering(hasWindowFocus); 3078 3079 if (hasWindowFocus) { 3080 boolean inTouchMode = msg.arg2 != 0; 3081 ensureTouchModeLocally(inTouchMode); 3082 3083 if (mAttachInfo.mHardwareRenderer != null && mSurface.isValid()){ 3084 mFullRedrawNeeded = true; 3085 try { 3086 mAttachInfo.mHardwareRenderer.initializeIfNeeded( 3087 mWidth, mHeight, mHolder.getSurface()); 3088 } catch (OutOfResourcesException e) { 3089 Log.e(TAG, "OutOfResourcesException locking surface", e); 3090 try { 3091 if (!mWindowSession.outOfMemory(mWindow)) { 3092 Slog.w(TAG, "No processes killed for memory; killing self"); 3093 Process.killProcess(Process.myPid()); 3094 } 3095 } catch (RemoteException ex) { 3096 } 3097 // Retry in a bit. 3098 sendMessageDelayed(obtainMessage(msg.what, msg.arg1, msg.arg2), 500); 3099 return; 3100 } 3101 } 3102 } 3103 3104 mLastWasImTarget = WindowManager.LayoutParams 3105 .mayUseInputMethod(mWindowAttributes.flags); 3106 3107 InputMethodManager imm = InputMethodManager.peekInstance(); 3108 if (mView != null) { 3109 if (hasWindowFocus && imm != null && mLastWasImTarget && 3110 !isInLocalFocusMode()) { 3111 imm.startGettingWindowFocus(mView); 3112 } 3113 mAttachInfo.mKeyDispatchState.reset(); 3114 mView.dispatchWindowFocusChanged(hasWindowFocus); 3115 mAttachInfo.mTreeObserver.dispatchOnWindowFocusChange(hasWindowFocus); 3116 } 3117 3118 // Note: must be done after the focus change callbacks, 3119 // so all of the view state is set up correctly. 3120 if (hasWindowFocus) { 3121 if (imm != null && mLastWasImTarget && !isInLocalFocusMode()) { 3122 imm.onWindowFocus(mView, mView.findFocus(), 3123 mWindowAttributes.softInputMode, 3124 !mHasHadWindowFocus, mWindowAttributes.flags); 3125 } 3126 // Clear the forward bit. We can just do this directly, since 3127 // the window manager doesn't care about it. 3128 mWindowAttributes.softInputMode &= 3129 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3130 ((WindowManager.LayoutParams)mView.getLayoutParams()) 3131 .softInputMode &= 3132 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3133 mHasHadWindowFocus = true; 3134 } 3135 3136 setAccessibilityFocus(null, null); 3137 3138 if (mView != null && mAccessibilityManager.isEnabled()) { 3139 if (hasWindowFocus) { 3140 mView.sendAccessibilityEvent( 3141 AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 3142 } 3143 } 3144 } 3145 } break; 3146 case MSG_DIE: 3147 doDie(); 3148 break; 3149 case MSG_DISPATCH_INPUT_EVENT: { 3150 InputEvent event = (InputEvent)msg.obj; 3151 enqueueInputEvent(event, null, 0, true); 3152 } break; 3153 case MSG_DISPATCH_KEY_FROM_IME: { 3154 if (LOCAL_LOGV) Log.v( 3155 TAG, "Dispatching key " 3156 + msg.obj + " from IME to " + mView); 3157 KeyEvent event = (KeyEvent)msg.obj; 3158 if ((event.getFlags()&KeyEvent.FLAG_FROM_SYSTEM) != 0) { 3159 // The IME is trying to say this event is from the 3160 // system! Bad bad bad! 3161 //noinspection UnusedAssignment 3162 event = KeyEvent.changeFlags(event, event.getFlags() & ~KeyEvent.FLAG_FROM_SYSTEM); 3163 } 3164 enqueueInputEvent(event, null, QueuedInputEvent.FLAG_DELIVER_POST_IME, true); 3165 } break; 3166 case MSG_FINISH_INPUT_CONNECTION: { 3167 InputMethodManager imm = InputMethodManager.peekInstance(); 3168 if (imm != null) { 3169 imm.reportFinishInputConnection((InputConnection)msg.obj); 3170 } 3171 } break; 3172 case MSG_CHECK_FOCUS: { 3173 InputMethodManager imm = InputMethodManager.peekInstance(); 3174 if (imm != null) { 3175 imm.checkFocus(); 3176 } 3177 } break; 3178 case MSG_CLOSE_SYSTEM_DIALOGS: { 3179 if (mView != null) { 3180 mView.onCloseSystemDialogs((String)msg.obj); 3181 } 3182 } break; 3183 case MSG_DISPATCH_DRAG_EVENT: 3184 case MSG_DISPATCH_DRAG_LOCATION_EVENT: { 3185 DragEvent event = (DragEvent)msg.obj; 3186 event.mLocalState = mLocalDragState; // only present when this app called startDrag() 3187 handleDragEvent(event); 3188 } break; 3189 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: { 3190 handleDispatchSystemUiVisibilityChanged((SystemUiVisibilityInfo) msg.obj); 3191 } break; 3192 case MSG_UPDATE_CONFIGURATION: { 3193 Configuration config = (Configuration)msg.obj; 3194 if (config.isOtherSeqNewer(mLastConfiguration)) { 3195 config = mLastConfiguration; 3196 } 3197 updateConfiguration(config, false); 3198 } break; 3199 case MSG_DISPATCH_SCREEN_STATE: { 3200 if (mView != null) { 3201 handleScreenStateChange(msg.arg1 == 1); 3202 } 3203 } break; 3204 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: { 3205 setAccessibilityFocus(null, null); 3206 } break; 3207 case MSG_DISPATCH_DONE_ANIMATING: { 3208 handleDispatchDoneAnimating(); 3209 } break; 3210 case MSG_INVALIDATE_WORLD: { 3211 if (mView != null) { 3212 invalidateWorld(mView); 3213 } 3214 } break; 3215 case MSG_FLUSH_LAYER_UPDATES: { 3216 flushHardwareLayerUpdates(); 3217 } break; 3218 } 3219 } 3220 } 3221 3222 final ViewRootHandler mHandler = new ViewRootHandler(); 3223 3224 /** 3225 * Something in the current window tells us we need to change the touch mode. For 3226 * example, we are not in touch mode, and the user touches the screen. 3227 * 3228 * If the touch mode has changed, tell the window manager, and handle it locally. 3229 * 3230 * @param inTouchMode Whether we want to be in touch mode. 3231 * @return True if the touch mode changed and focus changed was changed as a result 3232 */ 3233 boolean ensureTouchMode(boolean inTouchMode) { 3234 if (DBG) Log.d("touchmode", "ensureTouchMode(" + inTouchMode + "), current " 3235 + "touch mode is " + mAttachInfo.mInTouchMode); 3236 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3237 3238 // tell the window manager 3239 try { 3240 if (!isInLocalFocusMode()) { 3241 mWindowSession.setInTouchMode(inTouchMode); 3242 } 3243 } catch (RemoteException e) { 3244 throw new RuntimeException(e); 3245 } 3246 3247 // handle the change 3248 return ensureTouchModeLocally(inTouchMode); 3249 } 3250 3251 /** 3252 * Ensure that the touch mode for this window is set, and if it is changing, 3253 * take the appropriate action. 3254 * @param inTouchMode Whether we want to be in touch mode. 3255 * @return True if the touch mode changed and focus changed was changed as a result 3256 */ 3257 private boolean ensureTouchModeLocally(boolean inTouchMode) { 3258 if (DBG) Log.d("touchmode", "ensureTouchModeLocally(" + inTouchMode + "), current " 3259 + "touch mode is " + mAttachInfo.mInTouchMode); 3260 3261 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3262 3263 mAttachInfo.mInTouchMode = inTouchMode; 3264 mAttachInfo.mTreeObserver.dispatchOnTouchModeChanged(inTouchMode); 3265 3266 return (inTouchMode) ? enterTouchMode() : leaveTouchMode(); 3267 } 3268 3269 private boolean enterTouchMode() { 3270 if (mView != null && mView.hasFocus()) { 3271 // note: not relying on mFocusedView here because this could 3272 // be when the window is first being added, and mFocused isn't 3273 // set yet. 3274 final View focused = mView.findFocus(); 3275 if (focused != null && !focused.isFocusableInTouchMode()) { 3276 final ViewGroup ancestorToTakeFocus = findAncestorToTakeFocusInTouchMode(focused); 3277 if (ancestorToTakeFocus != null) { 3278 // there is an ancestor that wants focus after its 3279 // descendants that is focusable in touch mode.. give it 3280 // focus 3281 return ancestorToTakeFocus.requestFocus(); 3282 } else { 3283 // There's nothing to focus. Clear and propagate through the 3284 // hierarchy, but don't attempt to place new focus. 3285 focused.clearFocusInternal(true, false); 3286 return true; 3287 } 3288 } 3289 } 3290 return false; 3291 } 3292 3293 /** 3294 * Find an ancestor of focused that wants focus after its descendants and is 3295 * focusable in touch mode. 3296 * @param focused The currently focused view. 3297 * @return An appropriate view, or null if no such view exists. 3298 */ 3299 private static ViewGroup findAncestorToTakeFocusInTouchMode(View focused) { 3300 ViewParent parent = focused.getParent(); 3301 while (parent instanceof ViewGroup) { 3302 final ViewGroup vgParent = (ViewGroup) parent; 3303 if (vgParent.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 3304 && vgParent.isFocusableInTouchMode()) { 3305 return vgParent; 3306 } 3307 if (vgParent.isRootNamespace()) { 3308 return null; 3309 } else { 3310 parent = vgParent.getParent(); 3311 } 3312 } 3313 return null; 3314 } 3315 3316 private boolean leaveTouchMode() { 3317 if (mView != null) { 3318 if (mView.hasFocus()) { 3319 View focusedView = mView.findFocus(); 3320 if (!(focusedView instanceof ViewGroup)) { 3321 // some view has focus, let it keep it 3322 return false; 3323 } else if (((ViewGroup) focusedView).getDescendantFocusability() != 3324 ViewGroup.FOCUS_AFTER_DESCENDANTS) { 3325 // some view group has focus, and doesn't prefer its children 3326 // over itself for focus, so let them keep it. 3327 return false; 3328 } 3329 } 3330 3331 // find the best view to give focus to in this brave new non-touch-mode 3332 // world 3333 final View focused = focusSearch(null, View.FOCUS_DOWN); 3334 if (focused != null) { 3335 return focused.requestFocus(View.FOCUS_DOWN); 3336 } 3337 } 3338 return false; 3339 } 3340 3341 /** 3342 * Base class for implementing a stage in the chain of responsibility 3343 * for processing input events. 3344 * <p> 3345 * Events are delivered to the stage by the {@link #deliver} method. The stage 3346 * then has the choice of finishing the event or forwarding it to the next stage. 3347 * </p> 3348 */ 3349 abstract class InputStage { 3350 private final InputStage mNext; 3351 3352 protected static final int FORWARD = 0; 3353 protected static final int FINISH_HANDLED = 1; 3354 protected static final int FINISH_NOT_HANDLED = 2; 3355 3356 /** 3357 * Creates an input stage. 3358 * @param next The next stage to which events should be forwarded. 3359 */ 3360 public InputStage(InputStage next) { 3361 mNext = next; 3362 } 3363 3364 /** 3365 * Delivers an event to be processed. 3366 */ 3367 public final void deliver(QueuedInputEvent q) { 3368 if ((q.mFlags & QueuedInputEvent.FLAG_FINISHED) != 0) { 3369 forward(q); 3370 } else if (mView == null || !mAdded) { 3371 Slog.w(TAG, "Dropping event due to root view being removed: " + q.mEvent); 3372 finish(q, false); 3373 } else if (!mAttachInfo.mHasWindowFocus && 3374 !q.mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER) && 3375 !isTerminalInputEvent(q.mEvent)) { 3376 // If this is a focused event and the window doesn't currently have input focus, 3377 // then drop this event. This could be an event that came back from the previous 3378 // stage but the window has lost focus in the meantime. 3379 Slog.w(TAG, "Dropping event due to no window focus: " + q.mEvent); 3380 finish(q, false); 3381 } else { 3382 apply(q, onProcess(q)); 3383 } 3384 } 3385 3386 /** 3387 * Marks the the input event as finished then forwards it to the next stage. 3388 */ 3389 protected void finish(QueuedInputEvent q, boolean handled) { 3390 q.mFlags |= QueuedInputEvent.FLAG_FINISHED; 3391 if (handled) { 3392 q.mFlags |= QueuedInputEvent.FLAG_FINISHED_HANDLED; 3393 } 3394 forward(q); 3395 } 3396 3397 /** 3398 * Forwards the event to the next stage. 3399 */ 3400 protected void forward(QueuedInputEvent q) { 3401 onDeliverToNext(q); 3402 } 3403 3404 /** 3405 * Applies a result code from {@link #onProcess} to the specified event. 3406 */ 3407 protected void apply(QueuedInputEvent q, int result) { 3408 if (result == FORWARD) { 3409 forward(q); 3410 } else if (result == FINISH_HANDLED) { 3411 finish(q, true); 3412 } else if (result == FINISH_NOT_HANDLED) { 3413 finish(q, false); 3414 } else { 3415 throw new IllegalArgumentException("Invalid result: " + result); 3416 } 3417 } 3418 3419 /** 3420 * Called when an event is ready to be processed. 3421 * @return A result code indicating how the event was handled. 3422 */ 3423 protected int onProcess(QueuedInputEvent q) { 3424 return FORWARD; 3425 } 3426 3427 /** 3428 * Called when an event is being delivered to the next stage. 3429 */ 3430 protected void onDeliverToNext(QueuedInputEvent q) { 3431 if (mNext != null) { 3432 mNext.deliver(q); 3433 } else { 3434 finishInputEvent(q); 3435 } 3436 } 3437 } 3438 3439 /** 3440 * Base class for implementing an input pipeline stage that supports 3441 * asynchronous and out-of-order processing of input events. 3442 * <p> 3443 * In addition to what a normal input stage can do, an asynchronous 3444 * input stage may also defer an input event that has been delivered to it 3445 * and finish or forward it later. 3446 * </p> 3447 */ 3448 abstract class AsyncInputStage extends InputStage { 3449 private final String mTraceCounter; 3450 3451 private QueuedInputEvent mQueueHead; 3452 private QueuedInputEvent mQueueTail; 3453 private int mQueueLength; 3454 3455 protected static final int DEFER = 3; 3456 3457 /** 3458 * Creates an asynchronous input stage. 3459 * @param next The next stage to which events should be forwarded. 3460 * @param traceCounter The name of a counter to record the size of 3461 * the queue of pending events. 3462 */ 3463 public AsyncInputStage(InputStage next, String traceCounter) { 3464 super(next); 3465 mTraceCounter = traceCounter; 3466 } 3467 3468 /** 3469 * Marks the event as deferred, which is to say that it will be handled 3470 * asynchronously. The caller is responsible for calling {@link #forward} 3471 * or {@link #finish} later when it is done handling the event. 3472 */ 3473 protected void defer(QueuedInputEvent q) { 3474 q.mFlags |= QueuedInputEvent.FLAG_DEFERRED; 3475 enqueue(q); 3476 } 3477 3478 @Override 3479 protected void forward(QueuedInputEvent q) { 3480 // Clear the deferred flag. 3481 q.mFlags &= ~QueuedInputEvent.FLAG_DEFERRED; 3482 3483 // Fast path if the queue is empty. 3484 QueuedInputEvent curr = mQueueHead; 3485 if (curr == null) { 3486 super.forward(q); 3487 return; 3488 } 3489 3490 // Determine whether the event must be serialized behind any others 3491 // before it can be delivered to the next stage. This is done because 3492 // deferred events might be handled out of order by the stage. 3493 final int deviceId = q.mEvent.getDeviceId(); 3494 QueuedInputEvent prev = null; 3495 boolean blocked = false; 3496 while (curr != null && curr != q) { 3497 if (!blocked && deviceId == curr.mEvent.getDeviceId()) { 3498 blocked = true; 3499 } 3500 prev = curr; 3501 curr = curr.mNext; 3502 } 3503 3504 // If the event is blocked, then leave it in the queue to be delivered later. 3505 // Note that the event might not yet be in the queue if it was not previously 3506 // deferred so we will enqueue it if needed. 3507 if (blocked) { 3508 if (curr == null) { 3509 enqueue(q); 3510 } 3511 return; 3512 } 3513 3514 // The event is not blocked. Deliver it immediately. 3515 if (curr != null) { 3516 curr = curr.mNext; 3517 dequeue(q, prev); 3518 } 3519 super.forward(q); 3520 3521 // Dequeuing this event may have unblocked successors. Deliver them. 3522 while (curr != null) { 3523 if (deviceId == curr.mEvent.getDeviceId()) { 3524 if ((curr.mFlags & QueuedInputEvent.FLAG_DEFERRED) != 0) { 3525 break; 3526 } 3527 QueuedInputEvent next = curr.mNext; 3528 dequeue(curr, prev); 3529 super.forward(curr); 3530 curr = next; 3531 } else { 3532 prev = curr; 3533 curr = curr.mNext; 3534 } 3535 } 3536 } 3537 3538 @Override 3539 protected void apply(QueuedInputEvent q, int result) { 3540 if (result == DEFER) { 3541 defer(q); 3542 } else { 3543 super.apply(q, result); 3544 } 3545 } 3546 3547 private void enqueue(QueuedInputEvent q) { 3548 if (mQueueTail == null) { 3549 mQueueHead = q; 3550 mQueueTail = q; 3551 } else { 3552 mQueueTail.mNext = q; 3553 mQueueTail = q; 3554 } 3555 3556 mQueueLength += 1; 3557 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 3558 } 3559 3560 private void dequeue(QueuedInputEvent q, QueuedInputEvent prev) { 3561 if (prev == null) { 3562 mQueueHead = q.mNext; 3563 } else { 3564 prev.mNext = q.mNext; 3565 } 3566 if (mQueueTail == q) { 3567 mQueueTail = prev; 3568 } 3569 q.mNext = null; 3570 3571 mQueueLength -= 1; 3572 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 3573 } 3574 } 3575 3576 /** 3577 * Delivers pre-ime input events to a native activity. 3578 * Does not support pointer events. 3579 */ 3580 final class NativePreImeInputStage extends AsyncInputStage 3581 implements InputQueue.FinishedInputEventCallback { 3582 public NativePreImeInputStage(InputStage next, String traceCounter) { 3583 super(next, traceCounter); 3584 } 3585 3586 @Override 3587 protected int onProcess(QueuedInputEvent q) { 3588 if (mInputQueue != null && q.mEvent instanceof KeyEvent) { 3589 mInputQueue.sendInputEvent(q.mEvent, q, true, this); 3590 return DEFER; 3591 } 3592 return FORWARD; 3593 } 3594 3595 @Override 3596 public void onFinishedInputEvent(Object token, boolean handled) { 3597 QueuedInputEvent q = (QueuedInputEvent)token; 3598 if (handled) { 3599 finish(q, true); 3600 return; 3601 } 3602 forward(q); 3603 } 3604 } 3605 3606 /** 3607 * Delivers pre-ime input events to the view hierarchy. 3608 * Does not support pointer events. 3609 */ 3610 final class ViewPreImeInputStage extends InputStage { 3611 public ViewPreImeInputStage(InputStage next) { 3612 super(next); 3613 } 3614 3615 @Override 3616 protected int onProcess(QueuedInputEvent q) { 3617 if (q.mEvent instanceof KeyEvent) { 3618 return processKeyEvent(q); 3619 } 3620 return FORWARD; 3621 } 3622 3623 private int processKeyEvent(QueuedInputEvent q) { 3624 final KeyEvent event = (KeyEvent)q.mEvent; 3625 if (mView.dispatchKeyEventPreIme(event)) { 3626 return FINISH_HANDLED; 3627 } 3628 return FORWARD; 3629 } 3630 } 3631 3632 /** 3633 * Delivers input events to the ime. 3634 * Does not support pointer events. 3635 */ 3636 final class ImeInputStage extends AsyncInputStage 3637 implements InputMethodManager.FinishedInputEventCallback { 3638 public ImeInputStage(InputStage next, String traceCounter) { 3639 super(next, traceCounter); 3640 } 3641 3642 @Override 3643 protected int onProcess(QueuedInputEvent q) { 3644 if (mLastWasImTarget && !isInLocalFocusMode()) { 3645 InputMethodManager imm = InputMethodManager.peekInstance(); 3646 if (imm != null) { 3647 final InputEvent event = q.mEvent; 3648 if (DEBUG_IMF) Log.v(TAG, "Sending input event to IME: " + event); 3649 int result = imm.dispatchInputEvent(event, q, this, mHandler); 3650 if (result == InputMethodManager.DISPATCH_HANDLED) { 3651 return FINISH_HANDLED; 3652 } else if (result == InputMethodManager.DISPATCH_NOT_HANDLED) { 3653 return FINISH_NOT_HANDLED; 3654 } else { 3655 return DEFER; // callback will be invoked later 3656 } 3657 } 3658 } 3659 return FORWARD; 3660 } 3661 3662 @Override 3663 public void onFinishedInputEvent(Object token, boolean handled) { 3664 QueuedInputEvent q = (QueuedInputEvent)token; 3665 if (handled) { 3666 finish(q, true); 3667 return; 3668 } 3669 forward(q); 3670 } 3671 } 3672 3673 /** 3674 * Performs early processing of post-ime input events. 3675 */ 3676 final class EarlyPostImeInputStage extends InputStage { 3677 public EarlyPostImeInputStage(InputStage next) { 3678 super(next); 3679 } 3680 3681 @Override 3682 protected int onProcess(QueuedInputEvent q) { 3683 if (q.mEvent instanceof KeyEvent) { 3684 return processKeyEvent(q); 3685 } else { 3686 final int source = q.mEvent.getSource(); 3687 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 3688 return processPointerEvent(q); 3689 } 3690 } 3691 return FORWARD; 3692 } 3693 3694 private int processKeyEvent(QueuedInputEvent q) { 3695 final KeyEvent event = (KeyEvent)q.mEvent; 3696 3697 // If the key's purpose is to exit touch mode then we consume it 3698 // and consider it handled. 3699 if (checkForLeavingTouchModeAndConsume(event)) { 3700 return FINISH_HANDLED; 3701 } 3702 3703 // Make sure the fallback event policy sees all keys that will be 3704 // delivered to the view hierarchy. 3705 mFallbackEventHandler.preDispatchKeyEvent(event); 3706 return FORWARD; 3707 } 3708 3709 private int processPointerEvent(QueuedInputEvent q) { 3710 final MotionEvent event = (MotionEvent)q.mEvent; 3711 3712 // Translate the pointer event for compatibility, if needed. 3713 if (mTranslator != null) { 3714 mTranslator.translateEventInScreenToAppWindow(event); 3715 } 3716 3717 // Enter touch mode on down or scroll. 3718 final int action = event.getAction(); 3719 if (action == MotionEvent.ACTION_DOWN || action == MotionEvent.ACTION_SCROLL) { 3720 ensureTouchMode(true); 3721 } 3722 3723 // Offset the scroll position. 3724 if (mCurScrollY != 0) { 3725 event.offsetLocation(0, mCurScrollY); 3726 } 3727 3728 // Remember the touch position for possible drag-initiation. 3729 if (event.isTouchEvent()) { 3730 mLastTouchPoint.x = event.getRawX(); 3731 mLastTouchPoint.y = event.getRawY(); 3732 } 3733 return FORWARD; 3734 } 3735 } 3736 3737 /** 3738 * Delivers post-ime input events to a native activity. 3739 */ 3740 final class NativePostImeInputStage extends AsyncInputStage 3741 implements InputQueue.FinishedInputEventCallback { 3742 public NativePostImeInputStage(InputStage next, String traceCounter) { 3743 super(next, traceCounter); 3744 } 3745 3746 @Override 3747 protected int onProcess(QueuedInputEvent q) { 3748 if (mInputQueue != null) { 3749 mInputQueue.sendInputEvent(q.mEvent, q, false, this); 3750 return DEFER; 3751 } 3752 return FORWARD; 3753 } 3754 3755 @Override 3756 public void onFinishedInputEvent(Object token, boolean handled) { 3757 QueuedInputEvent q = (QueuedInputEvent)token; 3758 if (handled) { 3759 finish(q, true); 3760 return; 3761 } 3762 forward(q); 3763 } 3764 } 3765 3766 /** 3767 * Delivers post-ime input events to the view hierarchy. 3768 */ 3769 final class ViewPostImeInputStage extends InputStage { 3770 public ViewPostImeInputStage(InputStage next) { 3771 super(next); 3772 } 3773 3774 @Override 3775 protected int onProcess(QueuedInputEvent q) { 3776 if (q.mEvent instanceof KeyEvent) { 3777 return processKeyEvent(q); 3778 } else { 3779 final int source = q.mEvent.getSource(); 3780 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 3781 return processPointerEvent(q); 3782 } else if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 3783 return processTrackballEvent(q); 3784 } else { 3785 return processGenericMotionEvent(q); 3786 } 3787 } 3788 } 3789 3790 private int processKeyEvent(QueuedInputEvent q) { 3791 final KeyEvent event = (KeyEvent)q.mEvent; 3792 3793 // Deliver the key to the view hierarchy. 3794 if (mView.dispatchKeyEvent(event)) { 3795 return FINISH_HANDLED; 3796 } 3797 3798 // If the Control modifier is held, try to interpret the key as a shortcut. 3799 if (event.getAction() == KeyEvent.ACTION_DOWN 3800 && event.isCtrlPressed() 3801 && event.getRepeatCount() == 0 3802 && !KeyEvent.isModifierKey(event.getKeyCode())) { 3803 if (mView.dispatchKeyShortcutEvent(event)) { 3804 return FINISH_HANDLED; 3805 } 3806 } 3807 3808 // Apply the fallback event policy. 3809 if (mFallbackEventHandler.dispatchKeyEvent(event)) { 3810 return FINISH_HANDLED; 3811 } 3812 3813 // Handle automatic focus changes. 3814 if (event.getAction() == KeyEvent.ACTION_DOWN) { 3815 int direction = 0; 3816 switch (event.getKeyCode()) { 3817 case KeyEvent.KEYCODE_DPAD_LEFT: 3818 if (event.hasNoModifiers()) { 3819 direction = View.FOCUS_LEFT; 3820 } 3821 break; 3822 case KeyEvent.KEYCODE_DPAD_RIGHT: 3823 if (event.hasNoModifiers()) { 3824 direction = View.FOCUS_RIGHT; 3825 } 3826 break; 3827 case KeyEvent.KEYCODE_DPAD_UP: 3828 if (event.hasNoModifiers()) { 3829 direction = View.FOCUS_UP; 3830 } 3831 break; 3832 case KeyEvent.KEYCODE_DPAD_DOWN: 3833 if (event.hasNoModifiers()) { 3834 direction = View.FOCUS_DOWN; 3835 } 3836 break; 3837 case KeyEvent.KEYCODE_TAB: 3838 if (event.hasNoModifiers()) { 3839 direction = View.FOCUS_FORWARD; 3840 } else if (event.hasModifiers(KeyEvent.META_SHIFT_ON)) { 3841 direction = View.FOCUS_BACKWARD; 3842 } 3843 break; 3844 } 3845 if (direction != 0) { 3846 View focused = mView.findFocus(); 3847 if (focused != null) { 3848 View v = focused.focusSearch(direction); 3849 if (v != null && v != focused) { 3850 // do the math the get the interesting rect 3851 // of previous focused into the coord system of 3852 // newly focused view 3853 focused.getFocusedRect(mTempRect); 3854 if (mView instanceof ViewGroup) { 3855 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 3856 focused, mTempRect); 3857 ((ViewGroup) mView).offsetRectIntoDescendantCoords( 3858 v, mTempRect); 3859 } 3860 if (v.requestFocus(direction, mTempRect)) { 3861 playSoundEffect(SoundEffectConstants 3862 .getContantForFocusDirection(direction)); 3863 return FINISH_HANDLED; 3864 } 3865 } 3866 3867 // Give the focused view a last chance to handle the dpad key. 3868 if (mView.dispatchUnhandledMove(focused, direction)) { 3869 return FINISH_HANDLED; 3870 } 3871 } else { 3872 // find the best view to give focus to in this non-touch-mode with no-focus 3873 View v = focusSearch(null, direction); 3874 if (v != null && v.requestFocus(direction)) { 3875 return FINISH_HANDLED; 3876 } 3877 } 3878 } 3879 } 3880 return FORWARD; 3881 } 3882 3883 private int processPointerEvent(QueuedInputEvent q) { 3884 final MotionEvent event = (MotionEvent)q.mEvent; 3885 3886 if (mView.dispatchPointerEvent(event)) { 3887 return FINISH_HANDLED; 3888 } 3889 return FORWARD; 3890 } 3891 3892 private int processTrackballEvent(QueuedInputEvent q) { 3893 final MotionEvent event = (MotionEvent)q.mEvent; 3894 3895 if (mView.dispatchTrackballEvent(event)) { 3896 return FINISH_HANDLED; 3897 } 3898 return FORWARD; 3899 } 3900 3901 private int processGenericMotionEvent(QueuedInputEvent q) { 3902 final MotionEvent event = (MotionEvent)q.mEvent; 3903 3904 // Deliver the event to the view. 3905 if (mView.dispatchGenericMotionEvent(event)) { 3906 return FINISH_HANDLED; 3907 } 3908 return FORWARD; 3909 } 3910 } 3911 3912 /** 3913 * Performs synthesis of new input events from unhandled input events. 3914 */ 3915 final class SyntheticInputStage extends InputStage { 3916 private final SyntheticTrackballHandler mTrackball = new SyntheticTrackballHandler(); 3917 private final SyntheticJoystickHandler mJoystick = new SyntheticJoystickHandler(); 3918 private final SyntheticTouchNavigationHandler mTouchNavigation = 3919 new SyntheticTouchNavigationHandler(); 3920 private final SyntheticKeyHandler mKeys = new SyntheticKeyHandler(); 3921 3922 public SyntheticInputStage() { 3923 super(null); 3924 } 3925 3926 @Override 3927 protected int onProcess(QueuedInputEvent q) { 3928 q.mFlags |= QueuedInputEvent.FLAG_RESYNTHESIZED; 3929 if (q.mEvent instanceof MotionEvent) { 3930 final MotionEvent event = (MotionEvent)q.mEvent; 3931 final int source = event.getSource(); 3932 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 3933 mTrackball.process(event); 3934 return FINISH_HANDLED; 3935 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 3936 mJoystick.process(event); 3937 return FINISH_HANDLED; 3938 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 3939 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 3940 mTouchNavigation.process(event); 3941 return FINISH_HANDLED; 3942 } 3943 } else if (q.mEvent instanceof KeyEvent) { 3944 if (mKeys.process((KeyEvent) q.mEvent)) { 3945 return FINISH_HANDLED; 3946 } 3947 } 3948 3949 return FORWARD; 3950 } 3951 3952 @Override 3953 protected void onDeliverToNext(QueuedInputEvent q) { 3954 if ((q.mFlags & QueuedInputEvent.FLAG_RESYNTHESIZED) == 0) { 3955 // Cancel related synthetic events if any prior stage has handled the event. 3956 if (q.mEvent instanceof MotionEvent) { 3957 final MotionEvent event = (MotionEvent)q.mEvent; 3958 final int source = event.getSource(); 3959 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 3960 mTrackball.cancel(event); 3961 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 3962 mJoystick.cancel(event); 3963 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 3964 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 3965 mTouchNavigation.cancel(event); 3966 } 3967 } 3968 } 3969 super.onDeliverToNext(q); 3970 } 3971 } 3972 3973 /** 3974 * Creates dpad events from unhandled trackball movements. 3975 */ 3976 final class SyntheticTrackballHandler { 3977 private final TrackballAxis mX = new TrackballAxis(); 3978 private final TrackballAxis mY = new TrackballAxis(); 3979 private long mLastTime; 3980 3981 public void process(MotionEvent event) { 3982 // Translate the trackball event into DPAD keys and try to deliver those. 3983 long curTime = SystemClock.uptimeMillis(); 3984 if ((mLastTime + MAX_TRACKBALL_DELAY) < curTime) { 3985 // It has been too long since the last movement, 3986 // so restart at the beginning. 3987 mX.reset(0); 3988 mY.reset(0); 3989 mLastTime = curTime; 3990 } 3991 3992 final int action = event.getAction(); 3993 final int metaState = event.getMetaState(); 3994 switch (action) { 3995 case MotionEvent.ACTION_DOWN: 3996 mX.reset(2); 3997 mY.reset(2); 3998 enqueueInputEvent(new KeyEvent(curTime, curTime, 3999 KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 4000 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4001 InputDevice.SOURCE_KEYBOARD)); 4002 break; 4003 case MotionEvent.ACTION_UP: 4004 mX.reset(2); 4005 mY.reset(2); 4006 enqueueInputEvent(new KeyEvent(curTime, curTime, 4007 KeyEvent.ACTION_UP, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 4008 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4009 InputDevice.SOURCE_KEYBOARD)); 4010 break; 4011 } 4012 4013 if (DEBUG_TRACKBALL) Log.v(TAG, "TB X=" + mX.position + " step=" 4014 + mX.step + " dir=" + mX.dir + " acc=" + mX.acceleration 4015 + " move=" + event.getX() 4016 + " / Y=" + mY.position + " step=" 4017 + mY.step + " dir=" + mY.dir + " acc=" + mY.acceleration 4018 + " move=" + event.getY()); 4019 final float xOff = mX.collect(event.getX(), event.getEventTime(), "X"); 4020 final float yOff = mY.collect(event.getY(), event.getEventTime(), "Y"); 4021 4022 // Generate DPAD events based on the trackball movement. 4023 // We pick the axis that has moved the most as the direction of 4024 // the DPAD. When we generate DPAD events for one axis, then the 4025 // other axis is reset -- we don't want to perform DPAD jumps due 4026 // to slight movements in the trackball when making major movements 4027 // along the other axis. 4028 int keycode = 0; 4029 int movement = 0; 4030 float accel = 1; 4031 if (xOff > yOff) { 4032 movement = mX.generate(); 4033 if (movement != 0) { 4034 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_RIGHT 4035 : KeyEvent.KEYCODE_DPAD_LEFT; 4036 accel = mX.acceleration; 4037 mY.reset(2); 4038 } 4039 } else if (yOff > 0) { 4040 movement = mY.generate(); 4041 if (movement != 0) { 4042 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_DOWN 4043 : KeyEvent.KEYCODE_DPAD_UP; 4044 accel = mY.acceleration; 4045 mX.reset(2); 4046 } 4047 } 4048 4049 if (keycode != 0) { 4050 if (movement < 0) movement = -movement; 4051 int accelMovement = (int)(movement * accel); 4052 if (DEBUG_TRACKBALL) Log.v(TAG, "Move: movement=" + movement 4053 + " accelMovement=" + accelMovement 4054 + " accel=" + accel); 4055 if (accelMovement > movement) { 4056 if (DEBUG_TRACKBALL) Log.v(TAG, "Delivering fake DPAD: " 4057 + keycode); 4058 movement--; 4059 int repeatCount = accelMovement - movement; 4060 enqueueInputEvent(new KeyEvent(curTime, curTime, 4061 KeyEvent.ACTION_MULTIPLE, keycode, repeatCount, metaState, 4062 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4063 InputDevice.SOURCE_KEYBOARD)); 4064 } 4065 while (movement > 0) { 4066 if (DEBUG_TRACKBALL) Log.v(TAG, "Delivering fake DPAD: " 4067 + keycode); 4068 movement--; 4069 curTime = SystemClock.uptimeMillis(); 4070 enqueueInputEvent(new KeyEvent(curTime, curTime, 4071 KeyEvent.ACTION_DOWN, keycode, 0, metaState, 4072 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4073 InputDevice.SOURCE_KEYBOARD)); 4074 enqueueInputEvent(new KeyEvent(curTime, curTime, 4075 KeyEvent.ACTION_UP, keycode, 0, metaState, 4076 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4077 InputDevice.SOURCE_KEYBOARD)); 4078 } 4079 mLastTime = curTime; 4080 } 4081 } 4082 4083 public void cancel(MotionEvent event) { 4084 mLastTime = Integer.MIN_VALUE; 4085 4086 // If we reach this, we consumed a trackball event. 4087 // Because we will not translate the trackball event into a key event, 4088 // touch mode will not exit, so we exit touch mode here. 4089 if (mView != null && mAdded) { 4090 ensureTouchMode(false); 4091 } 4092 } 4093 } 4094 4095 /** 4096 * Maintains state information for a single trackball axis, generating 4097 * discrete (DPAD) movements based on raw trackball motion. 4098 */ 4099 static final class TrackballAxis { 4100 /** 4101 * The maximum amount of acceleration we will apply. 4102 */ 4103 static final float MAX_ACCELERATION = 20; 4104 4105 /** 4106 * The maximum amount of time (in milliseconds) between events in order 4107 * for us to consider the user to be doing fast trackball movements, 4108 * and thus apply an acceleration. 4109 */ 4110 static final long FAST_MOVE_TIME = 150; 4111 4112 /** 4113 * Scaling factor to the time (in milliseconds) between events to how 4114 * much to multiple/divide the current acceleration. When movement 4115 * is < FAST_MOVE_TIME this multiplies the acceleration; when > 4116 * FAST_MOVE_TIME it divides it. 4117 */ 4118 static final float ACCEL_MOVE_SCALING_FACTOR = (1.0f/40); 4119 4120 static final float FIRST_MOVEMENT_THRESHOLD = 0.5f; 4121 static final float SECOND_CUMULATIVE_MOVEMENT_THRESHOLD = 2.0f; 4122 static final float SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD = 1.0f; 4123 4124 float position; 4125 float acceleration = 1; 4126 long lastMoveTime = 0; 4127 int step; 4128 int dir; 4129 int nonAccelMovement; 4130 4131 void reset(int _step) { 4132 position = 0; 4133 acceleration = 1; 4134 lastMoveTime = 0; 4135 step = _step; 4136 dir = 0; 4137 } 4138 4139 /** 4140 * Add trackball movement into the state. If the direction of movement 4141 * has been reversed, the state is reset before adding the 4142 * movement (so that you don't have to compensate for any previously 4143 * collected movement before see the result of the movement in the 4144 * new direction). 4145 * 4146 * @return Returns the absolute value of the amount of movement 4147 * collected so far. 4148 */ 4149 float collect(float off, long time, String axis) { 4150 long normTime; 4151 if (off > 0) { 4152 normTime = (long)(off * FAST_MOVE_TIME); 4153 if (dir < 0) { 4154 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to positive!"); 4155 position = 0; 4156 step = 0; 4157 acceleration = 1; 4158 lastMoveTime = 0; 4159 } 4160 dir = 1; 4161 } else if (off < 0) { 4162 normTime = (long)((-off) * FAST_MOVE_TIME); 4163 if (dir > 0) { 4164 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to negative!"); 4165 position = 0; 4166 step = 0; 4167 acceleration = 1; 4168 lastMoveTime = 0; 4169 } 4170 dir = -1; 4171 } else { 4172 normTime = 0; 4173 } 4174 4175 // The number of milliseconds between each movement that is 4176 // considered "normal" and will not result in any acceleration 4177 // or deceleration, scaled by the offset we have here. 4178 if (normTime > 0) { 4179 long delta = time - lastMoveTime; 4180 lastMoveTime = time; 4181 float acc = acceleration; 4182 if (delta < normTime) { 4183 // The user is scrolling rapidly, so increase acceleration. 4184 float scale = (normTime-delta) * ACCEL_MOVE_SCALING_FACTOR; 4185 if (scale > 1) acc *= scale; 4186 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " accelerate: off=" 4187 + off + " normTime=" + normTime + " delta=" + delta 4188 + " scale=" + scale + " acc=" + acc); 4189 acceleration = acc < MAX_ACCELERATION ? acc : MAX_ACCELERATION; 4190 } else { 4191 // The user is scrolling slowly, so decrease acceleration. 4192 float scale = (delta-normTime) * ACCEL_MOVE_SCALING_FACTOR; 4193 if (scale > 1) acc /= scale; 4194 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " deccelerate: off=" 4195 + off + " normTime=" + normTime + " delta=" + delta 4196 + " scale=" + scale + " acc=" + acc); 4197 acceleration = acc > 1 ? acc : 1; 4198 } 4199 } 4200 position += off; 4201 return Math.abs(position); 4202 } 4203 4204 /** 4205 * Generate the number of discrete movement events appropriate for 4206 * the currently collected trackball movement. 4207 * 4208 * @return Returns the number of discrete movements, either positive 4209 * or negative, or 0 if there is not enough trackball movement yet 4210 * for a discrete movement. 4211 */ 4212 int generate() { 4213 int movement = 0; 4214 nonAccelMovement = 0; 4215 do { 4216 final int dir = position >= 0 ? 1 : -1; 4217 switch (step) { 4218 // If we are going to execute the first step, then we want 4219 // to do this as soon as possible instead of waiting for 4220 // a full movement, in order to make things look responsive. 4221 case 0: 4222 if (Math.abs(position) < FIRST_MOVEMENT_THRESHOLD) { 4223 return movement; 4224 } 4225 movement += dir; 4226 nonAccelMovement += dir; 4227 step = 1; 4228 break; 4229 // If we have generated the first movement, then we need 4230 // to wait for the second complete trackball motion before 4231 // generating the second discrete movement. 4232 case 1: 4233 if (Math.abs(position) < SECOND_CUMULATIVE_MOVEMENT_THRESHOLD) { 4234 return movement; 4235 } 4236 movement += dir; 4237 nonAccelMovement += dir; 4238 position -= SECOND_CUMULATIVE_MOVEMENT_THRESHOLD * dir; 4239 step = 2; 4240 break; 4241 // After the first two, we generate discrete movements 4242 // consistently with the trackball, applying an acceleration 4243 // if the trackball is moving quickly. This is a simple 4244 // acceleration on top of what we already compute based 4245 // on how quickly the wheel is being turned, to apply 4246 // a longer increasing acceleration to continuous movement 4247 // in one direction. 4248 default: 4249 if (Math.abs(position) < SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD) { 4250 return movement; 4251 } 4252 movement += dir; 4253 position -= dir * SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD; 4254 float acc = acceleration; 4255 acc *= 1.1f; 4256 acceleration = acc < MAX_ACCELERATION ? acc : acceleration; 4257 break; 4258 } 4259 } while (true); 4260 } 4261 } 4262 4263 /** 4264 * Creates dpad events from unhandled joystick movements. 4265 */ 4266 final class SyntheticJoystickHandler extends Handler { 4267 private final static int MSG_ENQUEUE_X_AXIS_KEY_REPEAT = 1; 4268 private final static int MSG_ENQUEUE_Y_AXIS_KEY_REPEAT = 2; 4269 4270 private int mLastXDirection; 4271 private int mLastYDirection; 4272 private int mLastXKeyCode; 4273 private int mLastYKeyCode; 4274 4275 public SyntheticJoystickHandler() { 4276 super(true); 4277 } 4278 4279 @Override 4280 public void handleMessage(Message msg) { 4281 switch (msg.what) { 4282 case MSG_ENQUEUE_X_AXIS_KEY_REPEAT: 4283 case MSG_ENQUEUE_Y_AXIS_KEY_REPEAT: { 4284 KeyEvent oldEvent = (KeyEvent)msg.obj; 4285 KeyEvent e = KeyEvent.changeTimeRepeat(oldEvent, 4286 SystemClock.uptimeMillis(), 4287 oldEvent.getRepeatCount() + 1); 4288 if (mAttachInfo.mHasWindowFocus) { 4289 enqueueInputEvent(e); 4290 Message m = obtainMessage(msg.what, e); 4291 m.setAsynchronous(true); 4292 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatDelay()); 4293 } 4294 } break; 4295 } 4296 } 4297 4298 public void process(MotionEvent event) { 4299 update(event, true); 4300 } 4301 4302 public void cancel(MotionEvent event) { 4303 update(event, false); 4304 } 4305 4306 private void update(MotionEvent event, boolean synthesizeNewKeys) { 4307 final long time = event.getEventTime(); 4308 final int metaState = event.getMetaState(); 4309 final int deviceId = event.getDeviceId(); 4310 final int source = event.getSource(); 4311 4312 int xDirection = joystickAxisValueToDirection( 4313 event.getAxisValue(MotionEvent.AXIS_HAT_X)); 4314 if (xDirection == 0) { 4315 xDirection = joystickAxisValueToDirection(event.getX()); 4316 } 4317 4318 int yDirection = joystickAxisValueToDirection( 4319 event.getAxisValue(MotionEvent.AXIS_HAT_Y)); 4320 if (yDirection == 0) { 4321 yDirection = joystickAxisValueToDirection(event.getY()); 4322 } 4323 4324 if (xDirection != mLastXDirection) { 4325 if (mLastXKeyCode != 0) { 4326 removeMessages(MSG_ENQUEUE_X_AXIS_KEY_REPEAT); 4327 enqueueInputEvent(new KeyEvent(time, time, 4328 KeyEvent.ACTION_UP, mLastXKeyCode, 0, metaState, 4329 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4330 mLastXKeyCode = 0; 4331 } 4332 4333 mLastXDirection = xDirection; 4334 4335 if (xDirection != 0 && synthesizeNewKeys) { 4336 mLastXKeyCode = xDirection > 0 4337 ? KeyEvent.KEYCODE_DPAD_RIGHT : KeyEvent.KEYCODE_DPAD_LEFT; 4338 final KeyEvent e = new KeyEvent(time, time, 4339 KeyEvent.ACTION_DOWN, mLastXKeyCode, 0, metaState, 4340 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4341 enqueueInputEvent(e); 4342 Message m = obtainMessage(MSG_ENQUEUE_X_AXIS_KEY_REPEAT, e); 4343 m.setAsynchronous(true); 4344 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4345 } 4346 } 4347 4348 if (yDirection != mLastYDirection) { 4349 if (mLastYKeyCode != 0) { 4350 removeMessages(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT); 4351 enqueueInputEvent(new KeyEvent(time, time, 4352 KeyEvent.ACTION_UP, mLastYKeyCode, 0, metaState, 4353 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4354 mLastYKeyCode = 0; 4355 } 4356 4357 mLastYDirection = yDirection; 4358 4359 if (yDirection != 0 && synthesizeNewKeys) { 4360 mLastYKeyCode = yDirection > 0 4361 ? KeyEvent.KEYCODE_DPAD_DOWN : KeyEvent.KEYCODE_DPAD_UP; 4362 final KeyEvent e = new KeyEvent(time, time, 4363 KeyEvent.ACTION_DOWN, mLastYKeyCode, 0, metaState, 4364 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4365 enqueueInputEvent(e); 4366 Message m = obtainMessage(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT, e); 4367 m.setAsynchronous(true); 4368 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4369 } 4370 } 4371 } 4372 4373 private int joystickAxisValueToDirection(float value) { 4374 if (value >= 0.5f) { 4375 return 1; 4376 } else if (value <= -0.5f) { 4377 return -1; 4378 } else { 4379 return 0; 4380 } 4381 } 4382 } 4383 4384 /** 4385 * Creates dpad events from unhandled touch navigation movements. 4386 */ 4387 final class SyntheticTouchNavigationHandler extends Handler { 4388 private static final String LOCAL_TAG = "SyntheticTouchNavigationHandler"; 4389 private static final boolean LOCAL_DEBUG = false; 4390 4391 // Assumed nominal width and height in millimeters of a touch navigation pad, 4392 // if no resolution information is available from the input system. 4393 private static final float DEFAULT_WIDTH_MILLIMETERS = 48; 4394 private static final float DEFAULT_HEIGHT_MILLIMETERS = 48; 4395 4396 /* TODO: These constants should eventually be moved to ViewConfiguration. */ 4397 4398 // The nominal distance traveled to move by one unit. 4399 private static final int TICK_DISTANCE_MILLIMETERS = 12; 4400 4401 // Minimum and maximum fling velocity in ticks per second. 4402 // The minimum velocity should be set such that we perform enough ticks per 4403 // second that the fling appears to be fluid. For example, if we set the minimum 4404 // to 2 ticks per second, then there may be up to half a second delay between the next 4405 // to last and last ticks which is noticeably discrete and jerky. This value should 4406 // probably not be set to anything less than about 4. 4407 // If fling accuracy is a problem then consider tuning the tick distance instead. 4408 private static final float MIN_FLING_VELOCITY_TICKS_PER_SECOND = 6f; 4409 private static final float MAX_FLING_VELOCITY_TICKS_PER_SECOND = 20f; 4410 4411 // Fling velocity decay factor applied after each new key is emitted. 4412 // This parameter controls the deceleration and overall duration of the fling. 4413 // The fling stops automatically when its velocity drops below the minimum 4414 // fling velocity defined above. 4415 private static final float FLING_TICK_DECAY = 0.8f; 4416 4417 /* The input device that we are tracking. */ 4418 4419 private int mCurrentDeviceId = -1; 4420 private int mCurrentSource; 4421 private boolean mCurrentDeviceSupported; 4422 4423 /* Configuration for the current input device. */ 4424 4425 // The scaled tick distance. A movement of this amount should generally translate 4426 // into a single dpad event in a given direction. 4427 private float mConfigTickDistance; 4428 4429 // The minimum and maximum scaled fling velocity. 4430 private float mConfigMinFlingVelocity; 4431 private float mConfigMaxFlingVelocity; 4432 4433 /* Tracking state. */ 4434 4435 // The velocity tracker for detecting flings. 4436 private VelocityTracker mVelocityTracker; 4437 4438 // The active pointer id, or -1 if none. 4439 private int mActivePointerId = -1; 4440 4441 // Time and location where tracking started. 4442 private long mStartTime; 4443 private float mStartX; 4444 private float mStartY; 4445 4446 // Most recently observed position. 4447 private float mLastX; 4448 private float mLastY; 4449 4450 // Accumulated movement delta since the last direction key was sent. 4451 private float mAccumulatedX; 4452 private float mAccumulatedY; 4453 4454 // Set to true if any movement was delivered to the app. 4455 // Implies that tap slop was exceeded. 4456 private boolean mConsumedMovement; 4457 4458 // The most recently sent key down event. 4459 // The keycode remains set until the direction changes or a fling ends 4460 // so that repeated key events may be generated as required. 4461 private long mPendingKeyDownTime; 4462 private int mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 4463 private int mPendingKeyRepeatCount; 4464 private int mPendingKeyMetaState; 4465 4466 // The current fling velocity while a fling is in progress. 4467 private boolean mFlinging; 4468 private float mFlingVelocity; 4469 4470 // The last time a confirm key was pressed on the touch nav device 4471 private long mLastConfirmKeyTime = Long.MAX_VALUE; 4472 4473 public SyntheticTouchNavigationHandler() { 4474 super(true); 4475 } 4476 4477 public void process(MotionEvent event) { 4478 // Update the current device information. 4479 final long time = event.getEventTime(); 4480 final int deviceId = event.getDeviceId(); 4481 final int source = event.getSource(); 4482 if (mCurrentDeviceId != deviceId || mCurrentSource != source) { 4483 finishKeys(time); 4484 finishTracking(time); 4485 mCurrentDeviceId = deviceId; 4486 mCurrentSource = source; 4487 mCurrentDeviceSupported = false; 4488 InputDevice device = event.getDevice(); 4489 if (device != null) { 4490 // In order to support an input device, we must know certain 4491 // characteristics about it, such as its size and resolution. 4492 InputDevice.MotionRange xRange = device.getMotionRange(MotionEvent.AXIS_X); 4493 InputDevice.MotionRange yRange = device.getMotionRange(MotionEvent.AXIS_Y); 4494 if (xRange != null && yRange != null) { 4495 mCurrentDeviceSupported = true; 4496 4497 // Infer the resolution if it not actually known. 4498 float xRes = xRange.getResolution(); 4499 if (xRes <= 0) { 4500 xRes = xRange.getRange() / DEFAULT_WIDTH_MILLIMETERS; 4501 } 4502 float yRes = yRange.getResolution(); 4503 if (yRes <= 0) { 4504 yRes = yRange.getRange() / DEFAULT_HEIGHT_MILLIMETERS; 4505 } 4506 float nominalRes = (xRes + yRes) * 0.5f; 4507 4508 // Precompute all of the configuration thresholds we will need. 4509 mConfigTickDistance = TICK_DISTANCE_MILLIMETERS * nominalRes; 4510 mConfigMinFlingVelocity = 4511 MIN_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 4512 mConfigMaxFlingVelocity = 4513 MAX_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 4514 4515 if (LOCAL_DEBUG) { 4516 Log.d(LOCAL_TAG, "Configured device " + mCurrentDeviceId 4517 + " (" + Integer.toHexString(mCurrentSource) + "): " 4518 + ", mConfigTickDistance=" + mConfigTickDistance 4519 + ", mConfigMinFlingVelocity=" + mConfigMinFlingVelocity 4520 + ", mConfigMaxFlingVelocity=" + mConfigMaxFlingVelocity); 4521 } 4522 } 4523 } 4524 } 4525 if (!mCurrentDeviceSupported) { 4526 return; 4527 } 4528 4529 // Handle the event. 4530 final int action = event.getActionMasked(); 4531 switch (action) { 4532 case MotionEvent.ACTION_DOWN: { 4533 boolean caughtFling = mFlinging; 4534 finishKeys(time); 4535 finishTracking(time); 4536 mActivePointerId = event.getPointerId(0); 4537 mVelocityTracker = VelocityTracker.obtain(); 4538 mVelocityTracker.addMovement(event); 4539 mStartTime = time; 4540 mStartX = event.getX(); 4541 mStartY = event.getY(); 4542 mLastX = mStartX; 4543 mLastY = mStartY; 4544 mAccumulatedX = 0; 4545 mAccumulatedY = 0; 4546 4547 // If we caught a fling, then pretend that the tap slop has already 4548 // been exceeded to suppress taps whose only purpose is to stop the fling. 4549 mConsumedMovement = caughtFling; 4550 break; 4551 } 4552 4553 case MotionEvent.ACTION_MOVE: 4554 case MotionEvent.ACTION_UP: { 4555 if (mActivePointerId < 0) { 4556 break; 4557 } 4558 final int index = event.findPointerIndex(mActivePointerId); 4559 if (index < 0) { 4560 finishKeys(time); 4561 finishTracking(time); 4562 break; 4563 } 4564 4565 mVelocityTracker.addMovement(event); 4566 final float x = event.getX(index); 4567 final float y = event.getY(index); 4568 mAccumulatedX += x - mLastX; 4569 mAccumulatedY += y - mLastY; 4570 mLastX = x; 4571 mLastY = y; 4572 4573 // Consume any accumulated movement so far. 4574 final int metaState = event.getMetaState(); 4575 consumeAccumulatedMovement(time, metaState); 4576 4577 // Detect taps and flings. 4578 if (action == MotionEvent.ACTION_UP) { 4579 if (mConsumedMovement && mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 4580 // It might be a fling. 4581 mVelocityTracker.computeCurrentVelocity(1000, mConfigMaxFlingVelocity); 4582 final float vx = mVelocityTracker.getXVelocity(mActivePointerId); 4583 final float vy = mVelocityTracker.getYVelocity(mActivePointerId); 4584 if (!startFling(time, vx, vy)) { 4585 finishKeys(time); 4586 } 4587 } 4588 finishTracking(time); 4589 } 4590 break; 4591 } 4592 4593 case MotionEvent.ACTION_CANCEL: { 4594 finishKeys(time); 4595 finishTracking(time); 4596 break; 4597 } 4598 } 4599 } 4600 4601 public void cancel(MotionEvent event) { 4602 if (mCurrentDeviceId == event.getDeviceId() 4603 && mCurrentSource == event.getSource()) { 4604 final long time = event.getEventTime(); 4605 finishKeys(time); 4606 finishTracking(time); 4607 } 4608 } 4609 4610 private void finishKeys(long time) { 4611 cancelFling(); 4612 sendKeyUp(time); 4613 } 4614 4615 private void finishTracking(long time) { 4616 if (mActivePointerId >= 0) { 4617 mActivePointerId = -1; 4618 mVelocityTracker.recycle(); 4619 mVelocityTracker = null; 4620 } 4621 } 4622 4623 private void consumeAccumulatedMovement(long time, int metaState) { 4624 final float absX = Math.abs(mAccumulatedX); 4625 final float absY = Math.abs(mAccumulatedY); 4626 if (absX >= absY) { 4627 if (absX >= mConfigTickDistance) { 4628 mAccumulatedX = consumeAccumulatedMovement(time, metaState, mAccumulatedX, 4629 KeyEvent.KEYCODE_DPAD_LEFT, KeyEvent.KEYCODE_DPAD_RIGHT); 4630 mAccumulatedY = 0; 4631 mConsumedMovement = true; 4632 } 4633 } else { 4634 if (absY >= mConfigTickDistance) { 4635 mAccumulatedY = consumeAccumulatedMovement(time, metaState, mAccumulatedY, 4636 KeyEvent.KEYCODE_DPAD_UP, KeyEvent.KEYCODE_DPAD_DOWN); 4637 mAccumulatedX = 0; 4638 mConsumedMovement = true; 4639 } 4640 } 4641 } 4642 4643 private float consumeAccumulatedMovement(long time, int metaState, 4644 float accumulator, int negativeKeyCode, int positiveKeyCode) { 4645 while (accumulator <= -mConfigTickDistance) { 4646 sendKeyDownOrRepeat(time, negativeKeyCode, metaState); 4647 accumulator += mConfigTickDistance; 4648 } 4649 while (accumulator >= mConfigTickDistance) { 4650 sendKeyDownOrRepeat(time, positiveKeyCode, metaState); 4651 accumulator -= mConfigTickDistance; 4652 } 4653 return accumulator; 4654 } 4655 4656 private void sendKeyDownOrRepeat(long time, int keyCode, int metaState) { 4657 if (mPendingKeyCode != keyCode) { 4658 sendKeyUp(time); 4659 mPendingKeyDownTime = time; 4660 mPendingKeyCode = keyCode; 4661 mPendingKeyRepeatCount = 0; 4662 } else { 4663 mPendingKeyRepeatCount += 1; 4664 } 4665 mPendingKeyMetaState = metaState; 4666 4667 // Note: Normally we would pass FLAG_LONG_PRESS when the repeat count is 1 4668 // but it doesn't quite make sense when simulating the events in this way. 4669 if (LOCAL_DEBUG) { 4670 Log.d(LOCAL_TAG, "Sending key down: keyCode=" + mPendingKeyCode 4671 + ", repeatCount=" + mPendingKeyRepeatCount 4672 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 4673 } 4674 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 4675 KeyEvent.ACTION_DOWN, mPendingKeyCode, mPendingKeyRepeatCount, 4676 mPendingKeyMetaState, mCurrentDeviceId, 4677 KeyEvent.FLAG_FALLBACK, mCurrentSource)); 4678 } 4679 4680 private void sendKeyUp(long time) { 4681 if (mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 4682 if (LOCAL_DEBUG) { 4683 Log.d(LOCAL_TAG, "Sending key up: keyCode=" + mPendingKeyCode 4684 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 4685 } 4686 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 4687 KeyEvent.ACTION_UP, mPendingKeyCode, 0, mPendingKeyMetaState, 4688 mCurrentDeviceId, 0, KeyEvent.FLAG_FALLBACK, 4689 mCurrentSource)); 4690 mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 4691 } 4692 } 4693 4694 private boolean startFling(long time, float vx, float vy) { 4695 if (LOCAL_DEBUG) { 4696 Log.d(LOCAL_TAG, "Considering fling: vx=" + vx + ", vy=" + vy 4697 + ", min=" + mConfigMinFlingVelocity); 4698 } 4699 4700 // Flings must be oriented in the same direction as the preceding movements. 4701 switch (mPendingKeyCode) { 4702 case KeyEvent.KEYCODE_DPAD_LEFT: 4703 if (-vx >= mConfigMinFlingVelocity 4704 && Math.abs(vy) < mConfigMinFlingVelocity) { 4705 mFlingVelocity = -vx; 4706 break; 4707 } 4708 return false; 4709 4710 case KeyEvent.KEYCODE_DPAD_RIGHT: 4711 if (vx >= mConfigMinFlingVelocity 4712 && Math.abs(vy) < mConfigMinFlingVelocity) { 4713 mFlingVelocity = vx; 4714 break; 4715 } 4716 return false; 4717 4718 case KeyEvent.KEYCODE_DPAD_UP: 4719 if (-vy >= mConfigMinFlingVelocity 4720 && Math.abs(vx) < mConfigMinFlingVelocity) { 4721 mFlingVelocity = -vy; 4722 break; 4723 } 4724 return false; 4725 4726 case KeyEvent.KEYCODE_DPAD_DOWN: 4727 if (vy >= mConfigMinFlingVelocity 4728 && Math.abs(vx) < mConfigMinFlingVelocity) { 4729 mFlingVelocity = vy; 4730 break; 4731 } 4732 return false; 4733 } 4734 4735 // Post the first fling event. 4736 mFlinging = postFling(time); 4737 return mFlinging; 4738 } 4739 4740 private boolean postFling(long time) { 4741 // The idea here is to estimate the time when the pointer would have 4742 // traveled one tick distance unit given the current fling velocity. 4743 // This effect creates continuity of motion. 4744 if (mFlingVelocity >= mConfigMinFlingVelocity) { 4745 long delay = (long)(mConfigTickDistance / mFlingVelocity * 1000); 4746 postAtTime(mFlingRunnable, time + delay); 4747 if (LOCAL_DEBUG) { 4748 Log.d(LOCAL_TAG, "Posted fling: velocity=" 4749 + mFlingVelocity + ", delay=" + delay 4750 + ", keyCode=" + mPendingKeyCode); 4751 } 4752 return true; 4753 } 4754 return false; 4755 } 4756 4757 private void cancelFling() { 4758 if (mFlinging) { 4759 removeCallbacks(mFlingRunnable); 4760 mFlinging = false; 4761 } 4762 } 4763 4764 private final Runnable mFlingRunnable = new Runnable() { 4765 @Override 4766 public void run() { 4767 final long time = SystemClock.uptimeMillis(); 4768 sendKeyDownOrRepeat(time, mPendingKeyCode, mPendingKeyMetaState); 4769 mFlingVelocity *= FLING_TICK_DECAY; 4770 if (!postFling(time)) { 4771 mFlinging = false; 4772 finishKeys(time); 4773 } 4774 } 4775 }; 4776 } 4777 4778 final class SyntheticKeyHandler { 4779 4780 public boolean process(KeyEvent event) { 4781 // In some locales (like Japan) controllers use B for confirm and A for back, rather 4782 // than vice versa, so we need to special case this here since the input system itself 4783 // is not locale-aware. 4784 int keyCode; 4785 switch(event.getKeyCode()) { 4786 case KeyEvent.KEYCODE_BUTTON_A: 4787 case KeyEvent.KEYCODE_BUTTON_C: 4788 case KeyEvent.KEYCODE_BUTTON_X: 4789 case KeyEvent.KEYCODE_BUTTON_Z: 4790 keyCode = mFlipControllerFallbackKeys ? 4791 KeyEvent.KEYCODE_BACK : KeyEvent.KEYCODE_DPAD_CENTER; 4792 break; 4793 case KeyEvent.KEYCODE_BUTTON_B: 4794 case KeyEvent.KEYCODE_BUTTON_Y: 4795 keyCode = mFlipControllerFallbackKeys ? 4796 KeyEvent.KEYCODE_DPAD_CENTER : KeyEvent.KEYCODE_BACK; 4797 break; 4798 case KeyEvent.KEYCODE_BUTTON_THUMBL: 4799 case KeyEvent.KEYCODE_BUTTON_THUMBR: 4800 case KeyEvent.KEYCODE_BUTTON_START: 4801 case KeyEvent.KEYCODE_BUTTON_1: 4802 case KeyEvent.KEYCODE_BUTTON_2: 4803 case KeyEvent.KEYCODE_BUTTON_3: 4804 case KeyEvent.KEYCODE_BUTTON_4: 4805 case KeyEvent.KEYCODE_BUTTON_5: 4806 case KeyEvent.KEYCODE_BUTTON_6: 4807 case KeyEvent.KEYCODE_BUTTON_7: 4808 case KeyEvent.KEYCODE_BUTTON_8: 4809 case KeyEvent.KEYCODE_BUTTON_9: 4810 case KeyEvent.KEYCODE_BUTTON_10: 4811 case KeyEvent.KEYCODE_BUTTON_11: 4812 case KeyEvent.KEYCODE_BUTTON_12: 4813 case KeyEvent.KEYCODE_BUTTON_13: 4814 case KeyEvent.KEYCODE_BUTTON_14: 4815 case KeyEvent.KEYCODE_BUTTON_15: 4816 case KeyEvent.KEYCODE_BUTTON_16: 4817 keyCode = KeyEvent.KEYCODE_DPAD_CENTER; 4818 break; 4819 case KeyEvent.KEYCODE_BUTTON_SELECT: 4820 case KeyEvent.KEYCODE_BUTTON_MODE: 4821 keyCode = KeyEvent.KEYCODE_MENU; 4822 default: 4823 return false; 4824 } 4825 4826 enqueueInputEvent(new KeyEvent(event.getDownTime(), event.getEventTime(), 4827 event.getAction(), keyCode, event.getRepeatCount(), event.getMetaState(), 4828 event.getScanCode(), event.getFlags() | KeyEvent.FLAG_FALLBACK, 4829 event.getSource())); 4830 return true; 4831 } 4832 4833 } 4834 4835 /** 4836 * Returns true if the key is used for keyboard navigation. 4837 * @param keyEvent The key event. 4838 * @return True if the key is used for keyboard navigation. 4839 */ 4840 private static boolean isNavigationKey(KeyEvent keyEvent) { 4841 switch (keyEvent.getKeyCode()) { 4842 case KeyEvent.KEYCODE_DPAD_LEFT: 4843 case KeyEvent.KEYCODE_DPAD_RIGHT: 4844 case KeyEvent.KEYCODE_DPAD_UP: 4845 case KeyEvent.KEYCODE_DPAD_DOWN: 4846 case KeyEvent.KEYCODE_DPAD_CENTER: 4847 case KeyEvent.KEYCODE_PAGE_UP: 4848 case KeyEvent.KEYCODE_PAGE_DOWN: 4849 case KeyEvent.KEYCODE_MOVE_HOME: 4850 case KeyEvent.KEYCODE_MOVE_END: 4851 case KeyEvent.KEYCODE_TAB: 4852 case KeyEvent.KEYCODE_SPACE: 4853 case KeyEvent.KEYCODE_ENTER: 4854 return true; 4855 } 4856 return false; 4857 } 4858 4859 /** 4860 * Returns true if the key is used for typing. 4861 * @param keyEvent The key event. 4862 * @return True if the key is used for typing. 4863 */ 4864 private static boolean isTypingKey(KeyEvent keyEvent) { 4865 return keyEvent.getUnicodeChar() > 0; 4866 } 4867 4868 /** 4869 * See if the key event means we should leave touch mode (and leave touch mode if so). 4870 * @param event The key event. 4871 * @return Whether this key event should be consumed (meaning the act of 4872 * leaving touch mode alone is considered the event). 4873 */ 4874 private boolean checkForLeavingTouchModeAndConsume(KeyEvent event) { 4875 // Only relevant in touch mode. 4876 if (!mAttachInfo.mInTouchMode) { 4877 return false; 4878 } 4879 4880 // Only consider leaving touch mode on DOWN or MULTIPLE actions, never on UP. 4881 final int action = event.getAction(); 4882 if (action != KeyEvent.ACTION_DOWN && action != KeyEvent.ACTION_MULTIPLE) { 4883 return false; 4884 } 4885 4886 // Don't leave touch mode if the IME told us not to. 4887 if ((event.getFlags() & KeyEvent.FLAG_KEEP_TOUCH_MODE) != 0) { 4888 return false; 4889 } 4890 4891 // If the key can be used for keyboard navigation then leave touch mode 4892 // and select a focused view if needed (in ensureTouchMode). 4893 // When a new focused view is selected, we consume the navigation key because 4894 // navigation doesn't make much sense unless a view already has focus so 4895 // the key's purpose is to set focus. 4896 if (isNavigationKey(event)) { 4897 return ensureTouchMode(false); 4898 } 4899 4900 // If the key can be used for typing then leave touch mode 4901 // and select a focused view if needed (in ensureTouchMode). 4902 // Always allow the view to process the typing key. 4903 if (isTypingKey(event)) { 4904 ensureTouchMode(false); 4905 return false; 4906 } 4907 4908 return false; 4909 } 4910 4911 /* drag/drop */ 4912 void setLocalDragState(Object obj) { 4913 mLocalDragState = obj; 4914 } 4915 4916 private void handleDragEvent(DragEvent event) { 4917 // From the root, only drag start/end/location are dispatched. entered/exited 4918 // are determined and dispatched by the viewgroup hierarchy, who then report 4919 // that back here for ultimate reporting back to the framework. 4920 if (mView != null && mAdded) { 4921 final int what = event.mAction; 4922 4923 if (what == DragEvent.ACTION_DRAG_EXITED) { 4924 // A direct EXITED event means that the window manager knows we've just crossed 4925 // a window boundary, so the current drag target within this one must have 4926 // just been exited. Send it the usual notifications and then we're done 4927 // for now. 4928 mView.dispatchDragEvent(event); 4929 } else { 4930 // Cache the drag description when the operation starts, then fill it in 4931 // on subsequent calls as a convenience 4932 if (what == DragEvent.ACTION_DRAG_STARTED) { 4933 mCurrentDragView = null; // Start the current-recipient tracking 4934 mDragDescription = event.mClipDescription; 4935 } else { 4936 event.mClipDescription = mDragDescription; 4937 } 4938 4939 // For events with a [screen] location, translate into window coordinates 4940 if ((what == DragEvent.ACTION_DRAG_LOCATION) || (what == DragEvent.ACTION_DROP)) { 4941 mDragPoint.set(event.mX, event.mY); 4942 if (mTranslator != null) { 4943 mTranslator.translatePointInScreenToAppWindow(mDragPoint); 4944 } 4945 4946 if (mCurScrollY != 0) { 4947 mDragPoint.offset(0, mCurScrollY); 4948 } 4949 4950 event.mX = mDragPoint.x; 4951 event.mY = mDragPoint.y; 4952 } 4953 4954 // Remember who the current drag target is pre-dispatch 4955 final View prevDragView = mCurrentDragView; 4956 4957 // Now dispatch the drag/drop event 4958 boolean result = mView.dispatchDragEvent(event); 4959 4960 // If we changed apparent drag target, tell the OS about it 4961 if (prevDragView != mCurrentDragView) { 4962 try { 4963 if (prevDragView != null) { 4964 mWindowSession.dragRecipientExited(mWindow); 4965 } 4966 if (mCurrentDragView != null) { 4967 mWindowSession.dragRecipientEntered(mWindow); 4968 } 4969 } catch (RemoteException e) { 4970 Slog.e(TAG, "Unable to note drag target change"); 4971 } 4972 } 4973 4974 // Report the drop result when we're done 4975 if (what == DragEvent.ACTION_DROP) { 4976 mDragDescription = null; 4977 try { 4978 Log.i(TAG, "Reporting drop result: " + result); 4979 mWindowSession.reportDropResult(mWindow, result); 4980 } catch (RemoteException e) { 4981 Log.e(TAG, "Unable to report drop result"); 4982 } 4983 } 4984 4985 // When the drag operation ends, release any local state object 4986 // that may have been in use 4987 if (what == DragEvent.ACTION_DRAG_ENDED) { 4988 setLocalDragState(null); 4989 } 4990 } 4991 } 4992 event.recycle(); 4993 } 4994 4995 public void handleDispatchSystemUiVisibilityChanged(SystemUiVisibilityInfo args) { 4996 if (mSeq != args.seq) { 4997 // The sequence has changed, so we need to update our value and make 4998 // sure to do a traversal afterward so the window manager is given our 4999 // most recent data. 5000 mSeq = args.seq; 5001 mAttachInfo.mForceReportNewAttributes = true; 5002 scheduleTraversals(); 5003 } 5004 if (mView == null) return; 5005 if (args.localChanges != 0) { 5006 mView.updateLocalSystemUiVisibility(args.localValue, args.localChanges); 5007 } 5008 if (mAttachInfo != null) { 5009 int visibility = args.globalVisibility&View.SYSTEM_UI_CLEARABLE_FLAGS; 5010 if (visibility != mAttachInfo.mGlobalSystemUiVisibility) { 5011 mAttachInfo.mGlobalSystemUiVisibility = visibility; 5012 mView.dispatchSystemUiVisibilityChanged(visibility); 5013 } 5014 } 5015 } 5016 5017 public void handleDispatchDoneAnimating() { 5018 if (mWindowsAnimating) { 5019 mWindowsAnimating = false; 5020 if (!mDirty.isEmpty() || mIsAnimating || mFullRedrawNeeded) { 5021 scheduleTraversals(); 5022 } 5023 } 5024 } 5025 5026 public void getLastTouchPoint(Point outLocation) { 5027 outLocation.x = (int) mLastTouchPoint.x; 5028 outLocation.y = (int) mLastTouchPoint.y; 5029 } 5030 5031 public void setDragFocus(View newDragTarget) { 5032 if (mCurrentDragView != newDragTarget) { 5033 mCurrentDragView = newDragTarget; 5034 } 5035 } 5036 5037 private AudioManager getAudioManager() { 5038 if (mView == null) { 5039 throw new IllegalStateException("getAudioManager called when there is no mView"); 5040 } 5041 if (mAudioManager == null) { 5042 mAudioManager = (AudioManager) mView.getContext().getSystemService(Context.AUDIO_SERVICE); 5043 } 5044 return mAudioManager; 5045 } 5046 5047 public AccessibilityInteractionController getAccessibilityInteractionController() { 5048 if (mView == null) { 5049 throw new IllegalStateException("getAccessibilityInteractionController" 5050 + " called when there is no mView"); 5051 } 5052 if (mAccessibilityInteractionController == null) { 5053 mAccessibilityInteractionController = new AccessibilityInteractionController(this); 5054 } 5055 return mAccessibilityInteractionController; 5056 } 5057 5058 private int relayoutWindow(WindowManager.LayoutParams params, int viewVisibility, 5059 boolean insetsPending) throws RemoteException { 5060 5061 float appScale = mAttachInfo.mApplicationScale; 5062 boolean restore = false; 5063 if (params != null && mTranslator != null) { 5064 restore = true; 5065 params.backup(); 5066 mTranslator.translateWindowLayout(params); 5067 } 5068 if (params != null) { 5069 if (DBG) Log.d(TAG, "WindowLayout in layoutWindow:" + params); 5070 } 5071 mPendingConfiguration.seq = 0; 5072 //Log.d(TAG, ">>>>>> CALLING relayout"); 5073 if (params != null && mOrigWindowType != params.type) { 5074 // For compatibility with old apps, don't crash here. 5075 if (mTargetSdkVersion < android.os.Build.VERSION_CODES.ICE_CREAM_SANDWICH) { 5076 Slog.w(TAG, "Window type can not be changed after " 5077 + "the window is added; ignoring change of " + mView); 5078 params.type = mOrigWindowType; 5079 } 5080 } 5081 int relayoutResult = mWindowSession.relayout( 5082 mWindow, mSeq, params, 5083 (int) (mView.getMeasuredWidth() * appScale + 0.5f), 5084 (int) (mView.getMeasuredHeight() * appScale + 0.5f), 5085 viewVisibility, insetsPending ? WindowManagerGlobal.RELAYOUT_INSETS_PENDING : 0, 5086 mWinFrame, mPendingOverscanInsets, mPendingContentInsets, mPendingVisibleInsets, 5087 mPendingConfiguration, mSurface); 5088 //Log.d(TAG, "<<<<<< BACK FROM relayout"); 5089 if (restore) { 5090 params.restore(); 5091 } 5092 5093 if (mTranslator != null) { 5094 mTranslator.translateRectInScreenToAppWinFrame(mWinFrame); 5095 mTranslator.translateRectInScreenToAppWindow(mPendingOverscanInsets); 5096 mTranslator.translateRectInScreenToAppWindow(mPendingContentInsets); 5097 mTranslator.translateRectInScreenToAppWindow(mPendingVisibleInsets); 5098 } 5099 return relayoutResult; 5100 } 5101 5102 /** 5103 * {@inheritDoc} 5104 */ 5105 @Override 5106 public void playSoundEffect(int effectId) { 5107 checkThread(); 5108 5109 if (mMediaDisabled) { 5110 return; 5111 } 5112 5113 try { 5114 final AudioManager audioManager = getAudioManager(); 5115 5116 switch (effectId) { 5117 case SoundEffectConstants.CLICK: 5118 audioManager.playSoundEffect(AudioManager.FX_KEY_CLICK); 5119 return; 5120 case SoundEffectConstants.NAVIGATION_DOWN: 5121 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_DOWN); 5122 return; 5123 case SoundEffectConstants.NAVIGATION_LEFT: 5124 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_LEFT); 5125 return; 5126 case SoundEffectConstants.NAVIGATION_RIGHT: 5127 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_RIGHT); 5128 return; 5129 case SoundEffectConstants.NAVIGATION_UP: 5130 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_UP); 5131 return; 5132 default: 5133 throw new IllegalArgumentException("unknown effect id " + effectId + 5134 " not defined in " + SoundEffectConstants.class.getCanonicalName()); 5135 } 5136 } catch (IllegalStateException e) { 5137 // Exception thrown by getAudioManager() when mView is null 5138 Log.e(TAG, "FATAL EXCEPTION when attempting to play sound effect: " + e); 5139 e.printStackTrace(); 5140 } 5141 } 5142 5143 /** 5144 * {@inheritDoc} 5145 */ 5146 @Override 5147 public boolean performHapticFeedback(int effectId, boolean always) { 5148 try { 5149 return mWindowSession.performHapticFeedback(mWindow, effectId, always); 5150 } catch (RemoteException e) { 5151 return false; 5152 } 5153 } 5154 5155 /** 5156 * {@inheritDoc} 5157 */ 5158 @Override 5159 public View focusSearch(View focused, int direction) { 5160 checkThread(); 5161 if (!(mView instanceof ViewGroup)) { 5162 return null; 5163 } 5164 return FocusFinder.getInstance().findNextFocus((ViewGroup) mView, focused, direction); 5165 } 5166 5167 public void debug() { 5168 mView.debug(); 5169 } 5170 5171 public void dumpGfxInfo(int[] info) { 5172 info[0] = info[1] = 0; 5173 if (mView != null) { 5174 getGfxInfo(mView, info); 5175 } 5176 } 5177 5178 private static void getGfxInfo(View view, int[] info) { 5179 DisplayList displayList = view.mDisplayList; 5180 info[0]++; 5181 if (displayList != null) { 5182 info[1] += displayList.getSize(); 5183 } 5184 5185 if (view instanceof ViewGroup) { 5186 ViewGroup group = (ViewGroup) view; 5187 5188 int count = group.getChildCount(); 5189 for (int i = 0; i < count; i++) { 5190 getGfxInfo(group.getChildAt(i), info); 5191 } 5192 } 5193 } 5194 5195 /** 5196 * @param immediate True, do now if not in traversal. False, put on queue and do later. 5197 * @return True, request has been queued. False, request has been completed. 5198 */ 5199 boolean die(boolean immediate) { 5200 // Make sure we do execute immediately if we are in the middle of a traversal or the damage 5201 // done by dispatchDetachedFromWindow will cause havoc on return. 5202 if (immediate && !mIsInTraversal) { 5203 doDie(); 5204 return false; 5205 } 5206 5207 if (!mIsDrawing) { 5208 destroyHardwareRenderer(); 5209 } else { 5210 Log.e(TAG, "Attempting to destroy the window while drawing!\n" + 5211 " window=" + this + ", title=" + mWindowAttributes.getTitle()); 5212 } 5213 mHandler.sendEmptyMessage(MSG_DIE); 5214 return true; 5215 } 5216 5217 void doDie() { 5218 checkThread(); 5219 if (LOCAL_LOGV) Log.v(TAG, "DIE in " + this + " of " + mSurface); 5220 synchronized (this) { 5221 if (mRemoved) { 5222 return; 5223 } 5224 mRemoved = true; 5225 if (mAdded) { 5226 dispatchDetachedFromWindow(); 5227 } 5228 5229 if (mAdded && !mFirst) { 5230 invalidateDisplayLists(); 5231 destroyHardwareRenderer(); 5232 5233 if (mView != null) { 5234 int viewVisibility = mView.getVisibility(); 5235 boolean viewVisibilityChanged = mViewVisibility != viewVisibility; 5236 if (mWindowAttributesChanged || viewVisibilityChanged) { 5237 // If layout params have been changed, first give them 5238 // to the window manager to make sure it has the correct 5239 // animation info. 5240 try { 5241 if ((relayoutWindow(mWindowAttributes, viewVisibility, false) 5242 & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 5243 mWindowSession.finishDrawing(mWindow); 5244 } 5245 } catch (RemoteException e) { 5246 } 5247 } 5248 5249 mSurface.release(); 5250 } 5251 } 5252 5253 mAdded = false; 5254 } 5255 WindowManagerGlobal.getInstance().doRemoveView(this); 5256 } 5257 5258 public void requestUpdateConfiguration(Configuration config) { 5259 Message msg = mHandler.obtainMessage(MSG_UPDATE_CONFIGURATION, config); 5260 mHandler.sendMessage(msg); 5261 } 5262 5263 public void loadSystemProperties() { 5264 mHandler.post(new Runnable() { 5265 @Override 5266 public void run() { 5267 // Profiling 5268 mProfileRendering = SystemProperties.getBoolean(PROPERTY_PROFILE_RENDERING, false); 5269 profileRendering(mAttachInfo.mHasWindowFocus); 5270 5271 // Media (used by sound effects) 5272 mMediaDisabled = SystemProperties.getBoolean(PROPERTY_MEDIA_DISABLED, false); 5273 5274 // Hardware rendering 5275 if (mAttachInfo.mHardwareRenderer != null) { 5276 if (mAttachInfo.mHardwareRenderer.loadSystemProperties(mHolder.getSurface())) { 5277 invalidate(); 5278 } 5279 } 5280 5281 // Layout debugging 5282 boolean layout = SystemProperties.getBoolean(View.DEBUG_LAYOUT_PROPERTY, false); 5283 if (layout != mAttachInfo.mDebugLayout) { 5284 mAttachInfo.mDebugLayout = layout; 5285 if (!mHandler.hasMessages(MSG_INVALIDATE_WORLD)) { 5286 mHandler.sendEmptyMessageDelayed(MSG_INVALIDATE_WORLD, 200); 5287 } 5288 } 5289 } 5290 }); 5291 } 5292 5293 private void destroyHardwareRenderer() { 5294 AttachInfo attachInfo = mAttachInfo; 5295 HardwareRenderer hardwareRenderer = attachInfo.mHardwareRenderer; 5296 5297 if (hardwareRenderer != null) { 5298 if (mView != null) { 5299 hardwareRenderer.destroyHardwareResources(mView); 5300 } 5301 hardwareRenderer.destroy(true); 5302 hardwareRenderer.setRequested(false); 5303 5304 attachInfo.mHardwareRenderer = null; 5305 attachInfo.mHardwareAccelerated = false; 5306 } 5307 } 5308 5309 public void dispatchFinishInputConnection(InputConnection connection) { 5310 Message msg = mHandler.obtainMessage(MSG_FINISH_INPUT_CONNECTION, connection); 5311 mHandler.sendMessage(msg); 5312 } 5313 5314 public void dispatchResized(Rect frame, Rect overscanInsets, Rect contentInsets, 5315 Rect visibleInsets, boolean reportDraw, Configuration newConfig) { 5316 if (DEBUG_LAYOUT) Log.v(TAG, "Resizing " + this + ": frame=" + frame.toShortString() 5317 + " contentInsets=" + contentInsets.toShortString() 5318 + " visibleInsets=" + visibleInsets.toShortString() 5319 + " reportDraw=" + reportDraw); 5320 Message msg = mHandler.obtainMessage(reportDraw ? MSG_RESIZED_REPORT : MSG_RESIZED); 5321 if (mTranslator != null) { 5322 mTranslator.translateRectInScreenToAppWindow(frame); 5323 mTranslator.translateRectInScreenToAppWindow(overscanInsets); 5324 mTranslator.translateRectInScreenToAppWindow(contentInsets); 5325 mTranslator.translateRectInScreenToAppWindow(visibleInsets); 5326 } 5327 SomeArgs args = SomeArgs.obtain(); 5328 final boolean sameProcessCall = (Binder.getCallingPid() == android.os.Process.myPid()); 5329 args.arg1 = sameProcessCall ? new Rect(frame) : frame; 5330 args.arg2 = sameProcessCall ? new Rect(contentInsets) : contentInsets; 5331 args.arg3 = sameProcessCall ? new Rect(visibleInsets) : visibleInsets; 5332 args.arg4 = sameProcessCall && newConfig != null ? new Configuration(newConfig) : newConfig; 5333 args.arg5 = sameProcessCall ? new Rect(overscanInsets) : overscanInsets; 5334 msg.obj = args; 5335 mHandler.sendMessage(msg); 5336 } 5337 5338 public void dispatchMoved(int newX, int newY) { 5339 if (DEBUG_LAYOUT) Log.v(TAG, "Window moved " + this + ": newX=" + newX + " newY=" + newY); 5340 if (mTranslator != null) { 5341 PointF point = new PointF(newX, newY); 5342 mTranslator.translatePointInScreenToAppWindow(point); 5343 newX = (int) (point.x + 0.5); 5344 newY = (int) (point.y + 0.5); 5345 } 5346 Message msg = mHandler.obtainMessage(MSG_WINDOW_MOVED, newX, newY); 5347 mHandler.sendMessage(msg); 5348 } 5349 5350 /** 5351 * Represents a pending input event that is waiting in a queue. 5352 * 5353 * Input events are processed in serial order by the timestamp specified by 5354 * {@link InputEvent#getEventTimeNano()}. In general, the input dispatcher delivers 5355 * one input event to the application at a time and waits for the application 5356 * to finish handling it before delivering the next one. 5357 * 5358 * However, because the application or IME can synthesize and inject multiple 5359 * key events at a time without going through the input dispatcher, we end up 5360 * needing a queue on the application's side. 5361 */ 5362 private static final class QueuedInputEvent { 5363 public static final int FLAG_DELIVER_POST_IME = 1 << 0; 5364 public static final int FLAG_DEFERRED = 1 << 1; 5365 public static final int FLAG_FINISHED = 1 << 2; 5366 public static final int FLAG_FINISHED_HANDLED = 1 << 3; 5367 public static final int FLAG_RESYNTHESIZED = 1 << 4; 5368 5369 public QueuedInputEvent mNext; 5370 5371 public InputEvent mEvent; 5372 public InputEventReceiver mReceiver; 5373 public int mFlags; 5374 5375 public boolean shouldSkipIme() { 5376 if ((mFlags & FLAG_DELIVER_POST_IME) != 0) { 5377 return true; 5378 } 5379 return mEvent instanceof MotionEvent 5380 && mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER); 5381 } 5382 } 5383 5384 private QueuedInputEvent obtainQueuedInputEvent(InputEvent event, 5385 InputEventReceiver receiver, int flags) { 5386 QueuedInputEvent q = mQueuedInputEventPool; 5387 if (q != null) { 5388 mQueuedInputEventPoolSize -= 1; 5389 mQueuedInputEventPool = q.mNext; 5390 q.mNext = null; 5391 } else { 5392 q = new QueuedInputEvent(); 5393 } 5394 5395 q.mEvent = event; 5396 q.mReceiver = receiver; 5397 q.mFlags = flags; 5398 return q; 5399 } 5400 5401 private void recycleQueuedInputEvent(QueuedInputEvent q) { 5402 q.mEvent = null; 5403 q.mReceiver = null; 5404 5405 if (mQueuedInputEventPoolSize < MAX_QUEUED_INPUT_EVENT_POOL_SIZE) { 5406 mQueuedInputEventPoolSize += 1; 5407 q.mNext = mQueuedInputEventPool; 5408 mQueuedInputEventPool = q; 5409 } 5410 } 5411 5412 void enqueueInputEvent(InputEvent event) { 5413 enqueueInputEvent(event, null, 0, false); 5414 } 5415 5416 void enqueueInputEvent(InputEvent event, 5417 InputEventReceiver receiver, int flags, boolean processImmediately) { 5418 QueuedInputEvent q = obtainQueuedInputEvent(event, receiver, flags); 5419 5420 // Always enqueue the input event in order, regardless of its time stamp. 5421 // We do this because the application or the IME may inject key events 5422 // in response to touch events and we want to ensure that the injected keys 5423 // are processed in the order they were received and we cannot trust that 5424 // the time stamp of injected events are monotonic. 5425 QueuedInputEvent last = mPendingInputEventTail; 5426 if (last == null) { 5427 mPendingInputEventHead = q; 5428 mPendingInputEventTail = q; 5429 } else { 5430 last.mNext = q; 5431 mPendingInputEventTail = q; 5432 } 5433 mPendingInputEventCount += 1; 5434 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 5435 mPendingInputEventCount); 5436 5437 if (processImmediately) { 5438 doProcessInputEvents(); 5439 } else { 5440 scheduleProcessInputEvents(); 5441 } 5442 } 5443 5444 private void scheduleProcessInputEvents() { 5445 if (!mProcessInputEventsScheduled) { 5446 mProcessInputEventsScheduled = true; 5447 Message msg = mHandler.obtainMessage(MSG_PROCESS_INPUT_EVENTS); 5448 msg.setAsynchronous(true); 5449 mHandler.sendMessage(msg); 5450 } 5451 } 5452 5453 void doProcessInputEvents() { 5454 // Deliver all pending input events in the queue. 5455 while (mPendingInputEventHead != null) { 5456 QueuedInputEvent q = mPendingInputEventHead; 5457 mPendingInputEventHead = q.mNext; 5458 if (mPendingInputEventHead == null) { 5459 mPendingInputEventTail = null; 5460 } 5461 q.mNext = null; 5462 5463 mPendingInputEventCount -= 1; 5464 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 5465 mPendingInputEventCount); 5466 5467 deliverInputEvent(q); 5468 } 5469 5470 // We are done processing all input events that we can process right now 5471 // so we can clear the pending flag immediately. 5472 if (mProcessInputEventsScheduled) { 5473 mProcessInputEventsScheduled = false; 5474 mHandler.removeMessages(MSG_PROCESS_INPUT_EVENTS); 5475 } 5476 } 5477 5478 private void deliverInputEvent(QueuedInputEvent q) { 5479 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "deliverInputEvent"); 5480 try { 5481 if (mInputEventConsistencyVerifier != null) { 5482 mInputEventConsistencyVerifier.onInputEvent(q.mEvent, 0); 5483 } 5484 5485 InputStage stage = q.shouldSkipIme() ? mFirstPostImeInputStage : mFirstInputStage; 5486 if (stage != null) { 5487 stage.deliver(q); 5488 } else { 5489 finishInputEvent(q); 5490 } 5491 } finally { 5492 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 5493 } 5494 } 5495 5496 private void finishInputEvent(QueuedInputEvent q) { 5497 if (q.mReceiver != null) { 5498 boolean handled = (q.mFlags & QueuedInputEvent.FLAG_FINISHED_HANDLED) != 0; 5499 q.mReceiver.finishInputEvent(q.mEvent, handled); 5500 } else { 5501 q.mEvent.recycleIfNeededAfterDispatch(); 5502 } 5503 5504 recycleQueuedInputEvent(q); 5505 } 5506 5507 static boolean isTerminalInputEvent(InputEvent event) { 5508 if (event instanceof KeyEvent) { 5509 final KeyEvent keyEvent = (KeyEvent)event; 5510 return keyEvent.getAction() == KeyEvent.ACTION_UP; 5511 } else { 5512 final MotionEvent motionEvent = (MotionEvent)event; 5513 final int action = motionEvent.getAction(); 5514 return action == MotionEvent.ACTION_UP 5515 || action == MotionEvent.ACTION_CANCEL 5516 || action == MotionEvent.ACTION_HOVER_EXIT; 5517 } 5518 } 5519 5520 void scheduleConsumeBatchedInput() { 5521 if (!mConsumeBatchedInputScheduled) { 5522 mConsumeBatchedInputScheduled = true; 5523 mChoreographer.postCallback(Choreographer.CALLBACK_INPUT, 5524 mConsumedBatchedInputRunnable, null); 5525 } 5526 } 5527 5528 void unscheduleConsumeBatchedInput() { 5529 if (mConsumeBatchedInputScheduled) { 5530 mConsumeBatchedInputScheduled = false; 5531 mChoreographer.removeCallbacks(Choreographer.CALLBACK_INPUT, 5532 mConsumedBatchedInputRunnable, null); 5533 } 5534 } 5535 5536 void doConsumeBatchedInput(long frameTimeNanos) { 5537 if (mConsumeBatchedInputScheduled) { 5538 mConsumeBatchedInputScheduled = false; 5539 if (mInputEventReceiver != null) { 5540 mInputEventReceiver.consumeBatchedInputEvents(frameTimeNanos); 5541 } 5542 doProcessInputEvents(); 5543 } 5544 } 5545 5546 final class TraversalRunnable implements Runnable { 5547 @Override 5548 public void run() { 5549 doTraversal(); 5550 } 5551 } 5552 final TraversalRunnable mTraversalRunnable = new TraversalRunnable(); 5553 5554 final class WindowInputEventReceiver extends InputEventReceiver { 5555 public WindowInputEventReceiver(InputChannel inputChannel, Looper looper) { 5556 super(inputChannel, looper); 5557 } 5558 5559 @Override 5560 public void onInputEvent(InputEvent event) { 5561 enqueueInputEvent(event, this, 0, true); 5562 } 5563 5564 @Override 5565 public void onBatchedInputEventPending() { 5566 scheduleConsumeBatchedInput(); 5567 } 5568 5569 @Override 5570 public void dispose() { 5571 unscheduleConsumeBatchedInput(); 5572 super.dispose(); 5573 } 5574 } 5575 WindowInputEventReceiver mInputEventReceiver; 5576 5577 final class ConsumeBatchedInputRunnable implements Runnable { 5578 @Override 5579 public void run() { 5580 doConsumeBatchedInput(mChoreographer.getFrameTimeNanos()); 5581 } 5582 } 5583 final ConsumeBatchedInputRunnable mConsumedBatchedInputRunnable = 5584 new ConsumeBatchedInputRunnable(); 5585 boolean mConsumeBatchedInputScheduled; 5586 5587 final class InvalidateOnAnimationRunnable implements Runnable { 5588 private boolean mPosted; 5589 private final ArrayList<View> mViews = new ArrayList<View>(); 5590 private final ArrayList<AttachInfo.InvalidateInfo> mViewRects = 5591 new ArrayList<AttachInfo.InvalidateInfo>(); 5592 private View[] mTempViews; 5593 private AttachInfo.InvalidateInfo[] mTempViewRects; 5594 5595 public void addView(View view) { 5596 synchronized (this) { 5597 mViews.add(view); 5598 postIfNeededLocked(); 5599 } 5600 } 5601 5602 public void addViewRect(AttachInfo.InvalidateInfo info) { 5603 synchronized (this) { 5604 mViewRects.add(info); 5605 postIfNeededLocked(); 5606 } 5607 } 5608 5609 public void removeView(View view) { 5610 synchronized (this) { 5611 mViews.remove(view); 5612 5613 for (int i = mViewRects.size(); i-- > 0; ) { 5614 AttachInfo.InvalidateInfo info = mViewRects.get(i); 5615 if (info.target == view) { 5616 mViewRects.remove(i); 5617 info.recycle(); 5618 } 5619 } 5620 5621 if (mPosted && mViews.isEmpty() && mViewRects.isEmpty()) { 5622 mChoreographer.removeCallbacks(Choreographer.CALLBACK_ANIMATION, this, null); 5623 mPosted = false; 5624 } 5625 } 5626 } 5627 5628 @Override 5629 public void run() { 5630 final int viewCount; 5631 final int viewRectCount; 5632 synchronized (this) { 5633 mPosted = false; 5634 5635 viewCount = mViews.size(); 5636 if (viewCount != 0) { 5637 mTempViews = mViews.toArray(mTempViews != null 5638 ? mTempViews : new View[viewCount]); 5639 mViews.clear(); 5640 } 5641 5642 viewRectCount = mViewRects.size(); 5643 if (viewRectCount != 0) { 5644 mTempViewRects = mViewRects.toArray(mTempViewRects != null 5645 ? mTempViewRects : new AttachInfo.InvalidateInfo[viewRectCount]); 5646 mViewRects.clear(); 5647 } 5648 } 5649 5650 for (int i = 0; i < viewCount; i++) { 5651 mTempViews[i].invalidate(); 5652 mTempViews[i] = null; 5653 } 5654 5655 for (int i = 0; i < viewRectCount; i++) { 5656 final View.AttachInfo.InvalidateInfo info = mTempViewRects[i]; 5657 info.target.invalidate(info.left, info.top, info.right, info.bottom); 5658 info.recycle(); 5659 } 5660 } 5661 5662 private void postIfNeededLocked() { 5663 if (!mPosted) { 5664 mChoreographer.postCallback(Choreographer.CALLBACK_ANIMATION, this, null); 5665 mPosted = true; 5666 } 5667 } 5668 } 5669 final InvalidateOnAnimationRunnable mInvalidateOnAnimationRunnable = 5670 new InvalidateOnAnimationRunnable(); 5671 5672 public void dispatchInvalidateDelayed(View view, long delayMilliseconds) { 5673 Message msg = mHandler.obtainMessage(MSG_INVALIDATE, view); 5674 mHandler.sendMessageDelayed(msg, delayMilliseconds); 5675 } 5676 5677 public void dispatchInvalidateRectDelayed(AttachInfo.InvalidateInfo info, 5678 long delayMilliseconds) { 5679 final Message msg = mHandler.obtainMessage(MSG_INVALIDATE_RECT, info); 5680 mHandler.sendMessageDelayed(msg, delayMilliseconds); 5681 } 5682 5683 public void dispatchInvalidateOnAnimation(View view) { 5684 mInvalidateOnAnimationRunnable.addView(view); 5685 } 5686 5687 public void dispatchInvalidateRectOnAnimation(AttachInfo.InvalidateInfo info) { 5688 mInvalidateOnAnimationRunnable.addViewRect(info); 5689 } 5690 5691 public void enqueueDisplayList(DisplayList displayList) { 5692 mDisplayLists.add(displayList); 5693 } 5694 5695 public void cancelInvalidate(View view) { 5696 mHandler.removeMessages(MSG_INVALIDATE, view); 5697 // fixme: might leak the AttachInfo.InvalidateInfo objects instead of returning 5698 // them to the pool 5699 mHandler.removeMessages(MSG_INVALIDATE_RECT, view); 5700 mInvalidateOnAnimationRunnable.removeView(view); 5701 } 5702 5703 public void dispatchInputEvent(InputEvent event) { 5704 Message msg = mHandler.obtainMessage(MSG_DISPATCH_INPUT_EVENT, event); 5705 msg.setAsynchronous(true); 5706 mHandler.sendMessage(msg); 5707 } 5708 5709 public void dispatchKeyFromIme(KeyEvent event) { 5710 Message msg = mHandler.obtainMessage(MSG_DISPATCH_KEY_FROM_IME, event); 5711 msg.setAsynchronous(true); 5712 mHandler.sendMessage(msg); 5713 } 5714 5715 public void dispatchUnhandledKey(KeyEvent event) { 5716 if ((event.getFlags() & KeyEvent.FLAG_FALLBACK) == 0) { 5717 final KeyCharacterMap kcm = event.getKeyCharacterMap(); 5718 final int keyCode = event.getKeyCode(); 5719 final int metaState = event.getMetaState(); 5720 5721 // Check for fallback actions specified by the key character map. 5722 KeyCharacterMap.FallbackAction fallbackAction = 5723 kcm.getFallbackAction(keyCode, metaState); 5724 if (fallbackAction != null) { 5725 final int flags = event.getFlags() | KeyEvent.FLAG_FALLBACK; 5726 KeyEvent fallbackEvent = KeyEvent.obtain( 5727 event.getDownTime(), event.getEventTime(), 5728 event.getAction(), fallbackAction.keyCode, 5729 event.getRepeatCount(), fallbackAction.metaState, 5730 event.getDeviceId(), event.getScanCode(), 5731 flags, event.getSource(), null); 5732 fallbackAction.recycle(); 5733 5734 dispatchInputEvent(fallbackEvent); 5735 } 5736 } 5737 } 5738 5739 public void dispatchAppVisibility(boolean visible) { 5740 Message msg = mHandler.obtainMessage(MSG_DISPATCH_APP_VISIBILITY); 5741 msg.arg1 = visible ? 1 : 0; 5742 mHandler.sendMessage(msg); 5743 } 5744 5745 public void dispatchScreenStateChange(boolean on) { 5746 Message msg = mHandler.obtainMessage(MSG_DISPATCH_SCREEN_STATE); 5747 msg.arg1 = on ? 1 : 0; 5748 mHandler.sendMessage(msg); 5749 } 5750 5751 public void dispatchGetNewSurface() { 5752 Message msg = mHandler.obtainMessage(MSG_DISPATCH_GET_NEW_SURFACE); 5753 mHandler.sendMessage(msg); 5754 } 5755 5756 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 5757 Message msg = Message.obtain(); 5758 msg.what = MSG_WINDOW_FOCUS_CHANGED; 5759 msg.arg1 = hasFocus ? 1 : 0; 5760 msg.arg2 = inTouchMode ? 1 : 0; 5761 mHandler.sendMessage(msg); 5762 } 5763 5764 public void dispatchCloseSystemDialogs(String reason) { 5765 Message msg = Message.obtain(); 5766 msg.what = MSG_CLOSE_SYSTEM_DIALOGS; 5767 msg.obj = reason; 5768 mHandler.sendMessage(msg); 5769 } 5770 5771 public void dispatchDragEvent(DragEvent event) { 5772 final int what; 5773 if (event.getAction() == DragEvent.ACTION_DRAG_LOCATION) { 5774 what = MSG_DISPATCH_DRAG_LOCATION_EVENT; 5775 mHandler.removeMessages(what); 5776 } else { 5777 what = MSG_DISPATCH_DRAG_EVENT; 5778 } 5779 Message msg = mHandler.obtainMessage(what, event); 5780 mHandler.sendMessage(msg); 5781 } 5782 5783 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 5784 int localValue, int localChanges) { 5785 SystemUiVisibilityInfo args = new SystemUiVisibilityInfo(); 5786 args.seq = seq; 5787 args.globalVisibility = globalVisibility; 5788 args.localValue = localValue; 5789 args.localChanges = localChanges; 5790 mHandler.sendMessage(mHandler.obtainMessage(MSG_DISPATCH_SYSTEM_UI_VISIBILITY, args)); 5791 } 5792 5793 public void dispatchDoneAnimating() { 5794 mHandler.sendEmptyMessage(MSG_DISPATCH_DONE_ANIMATING); 5795 } 5796 5797 public void dispatchCheckFocus() { 5798 if (!mHandler.hasMessages(MSG_CHECK_FOCUS)) { 5799 // This will result in a call to checkFocus() below. 5800 mHandler.sendEmptyMessage(MSG_CHECK_FOCUS); 5801 } 5802 } 5803 5804 /** 5805 * Post a callback to send a 5806 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 5807 * This event is send at most once every 5808 * {@link ViewConfiguration#getSendRecurringAccessibilityEventsInterval()}. 5809 */ 5810 private void postSendWindowContentChangedCallback(View source) { 5811 if (mSendWindowContentChangedAccessibilityEvent == null) { 5812 mSendWindowContentChangedAccessibilityEvent = 5813 new SendWindowContentChangedAccessibilityEvent(); 5814 } 5815 mSendWindowContentChangedAccessibilityEvent.runOrPost(source); 5816 } 5817 5818 /** 5819 * Remove a posted callback to send a 5820 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 5821 */ 5822 private void removeSendWindowContentChangedCallback() { 5823 if (mSendWindowContentChangedAccessibilityEvent != null) { 5824 mHandler.removeCallbacks(mSendWindowContentChangedAccessibilityEvent); 5825 } 5826 } 5827 5828 @Override 5829 public boolean showContextMenuForChild(View originalView) { 5830 return false; 5831 } 5832 5833 @Override 5834 public ActionMode startActionModeForChild(View originalView, ActionMode.Callback callback) { 5835 return null; 5836 } 5837 5838 @Override 5839 public void createContextMenu(ContextMenu menu) { 5840 } 5841 5842 @Override 5843 public void childDrawableStateChanged(View child) { 5844 } 5845 5846 @Override 5847 public boolean requestSendAccessibilityEvent(View child, AccessibilityEvent event) { 5848 if (mView == null) { 5849 return false; 5850 } 5851 // Intercept accessibility focus events fired by virtual nodes to keep 5852 // track of accessibility focus position in such nodes. 5853 final int eventType = event.getEventType(); 5854 switch (eventType) { 5855 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUSED: { 5856 final long sourceNodeId = event.getSourceNodeId(); 5857 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 5858 sourceNodeId); 5859 View source = mView.findViewByAccessibilityId(accessibilityViewId); 5860 if (source != null) { 5861 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 5862 if (provider != null) { 5863 AccessibilityNodeInfo node = provider.createAccessibilityNodeInfo( 5864 AccessibilityNodeInfo.getVirtualDescendantId(sourceNodeId)); 5865 setAccessibilityFocus(source, node); 5866 } 5867 } 5868 } break; 5869 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUS_CLEARED: { 5870 final long sourceNodeId = event.getSourceNodeId(); 5871 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 5872 sourceNodeId); 5873 View source = mView.findViewByAccessibilityId(accessibilityViewId); 5874 if (source != null) { 5875 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 5876 if (provider != null) { 5877 setAccessibilityFocus(null, null); 5878 } 5879 } 5880 } break; 5881 } 5882 mAccessibilityManager.sendAccessibilityEvent(event); 5883 return true; 5884 } 5885 5886 @Override 5887 public void childAccessibilityStateChanged(View child) { 5888 postSendWindowContentChangedCallback(child); 5889 } 5890 5891 @Override 5892 public boolean canResolveLayoutDirection() { 5893 return true; 5894 } 5895 5896 @Override 5897 public boolean isLayoutDirectionResolved() { 5898 return true; 5899 } 5900 5901 @Override 5902 public int getLayoutDirection() { 5903 return View.LAYOUT_DIRECTION_RESOLVED_DEFAULT; 5904 } 5905 5906 @Override 5907 public boolean canResolveTextDirection() { 5908 return true; 5909 } 5910 5911 @Override 5912 public boolean isTextDirectionResolved() { 5913 return true; 5914 } 5915 5916 @Override 5917 public int getTextDirection() { 5918 return View.TEXT_DIRECTION_RESOLVED_DEFAULT; 5919 } 5920 5921 @Override 5922 public boolean canResolveTextAlignment() { 5923 return true; 5924 } 5925 5926 @Override 5927 public boolean isTextAlignmentResolved() { 5928 return true; 5929 } 5930 5931 @Override 5932 public int getTextAlignment() { 5933 return View.TEXT_ALIGNMENT_RESOLVED_DEFAULT; 5934 } 5935 5936 private View getCommonPredecessor(View first, View second) { 5937 if (mAttachInfo != null) { 5938 if (mTempHashSet == null) { 5939 mTempHashSet = new HashSet<View>(); 5940 } 5941 HashSet<View> seen = mTempHashSet; 5942 seen.clear(); 5943 View firstCurrent = first; 5944 while (firstCurrent != null) { 5945 seen.add(firstCurrent); 5946 ViewParent firstCurrentParent = firstCurrent.mParent; 5947 if (firstCurrentParent instanceof View) { 5948 firstCurrent = (View) firstCurrentParent; 5949 } else { 5950 firstCurrent = null; 5951 } 5952 } 5953 View secondCurrent = second; 5954 while (secondCurrent != null) { 5955 if (seen.contains(secondCurrent)) { 5956 seen.clear(); 5957 return secondCurrent; 5958 } 5959 ViewParent secondCurrentParent = secondCurrent.mParent; 5960 if (secondCurrentParent instanceof View) { 5961 secondCurrent = (View) secondCurrentParent; 5962 } else { 5963 secondCurrent = null; 5964 } 5965 } 5966 seen.clear(); 5967 } 5968 return null; 5969 } 5970 5971 void checkThread() { 5972 if (mThread != Thread.currentThread()) { 5973 throw new CalledFromWrongThreadException( 5974 "Only the original thread that created a view hierarchy can touch its views."); 5975 } 5976 } 5977 5978 @Override 5979 public void requestDisallowInterceptTouchEvent(boolean disallowIntercept) { 5980 // ViewAncestor never intercepts touch event, so this can be a no-op 5981 } 5982 5983 @Override 5984 public boolean requestChildRectangleOnScreen(View child, Rect rectangle, boolean immediate) { 5985 final boolean scrolled = scrollToRectOrFocus(rectangle, immediate); 5986 if (rectangle != null) { 5987 mTempRect.set(rectangle); 5988 mTempRect.offset(0, -mCurScrollY); 5989 mTempRect.offset(mAttachInfo.mWindowLeft, mAttachInfo.mWindowTop); 5990 try { 5991 mWindowSession.onRectangleOnScreenRequested(mWindow, mTempRect, immediate); 5992 } catch (RemoteException re) { 5993 /* ignore */ 5994 } 5995 } 5996 return scrolled; 5997 } 5998 5999 @Override 6000 public void childHasTransientStateChanged(View child, boolean hasTransientState) { 6001 // Do nothing. 6002 } 6003 6004 void changeCanvasOpacity(boolean opaque) { 6005 // TODO(romainguy): recreate Canvas (software or hardware) to reflect the opacity change. 6006 Log.d(TAG, "changeCanvasOpacity: opaque=" + opaque); 6007 } 6008 6009 class TakenSurfaceHolder extends BaseSurfaceHolder { 6010 @Override 6011 public boolean onAllowLockCanvas() { 6012 return mDrawingAllowed; 6013 } 6014 6015 @Override 6016 public void onRelayoutContainer() { 6017 // Not currently interesting -- from changing between fixed and layout size. 6018 } 6019 6020 @Override 6021 public void setFormat(int format) { 6022 ((RootViewSurfaceTaker)mView).setSurfaceFormat(format); 6023 } 6024 6025 @Override 6026 public void setType(int type) { 6027 ((RootViewSurfaceTaker)mView).setSurfaceType(type); 6028 } 6029 6030 @Override 6031 public void onUpdateSurface() { 6032 // We take care of format and type changes on our own. 6033 throw new IllegalStateException("Shouldn't be here"); 6034 } 6035 6036 @Override 6037 public boolean isCreating() { 6038 return mIsCreating; 6039 } 6040 6041 @Override 6042 public void setFixedSize(int width, int height) { 6043 throw new UnsupportedOperationException( 6044 "Currently only support sizing from layout"); 6045 } 6046 6047 @Override 6048 public void setKeepScreenOn(boolean screenOn) { 6049 ((RootViewSurfaceTaker)mView).setSurfaceKeepScreenOn(screenOn); 6050 } 6051 } 6052 6053 static class W extends IWindow.Stub { 6054 private final WeakReference<ViewRootImpl> mViewAncestor; 6055 private final IWindowSession mWindowSession; 6056 6057 W(ViewRootImpl viewAncestor) { 6058 mViewAncestor = new WeakReference<ViewRootImpl>(viewAncestor); 6059 mWindowSession = viewAncestor.mWindowSession; 6060 } 6061 6062 @Override 6063 public void resized(Rect frame, Rect overscanInsets, Rect contentInsets, 6064 Rect visibleInsets, boolean reportDraw, Configuration newConfig) { 6065 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6066 if (viewAncestor != null) { 6067 viewAncestor.dispatchResized(frame, overscanInsets, contentInsets, 6068 visibleInsets, reportDraw, newConfig); 6069 } 6070 } 6071 6072 @Override 6073 public void moved(int newX, int newY) { 6074 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6075 if (viewAncestor != null) { 6076 viewAncestor.dispatchMoved(newX, newY); 6077 } 6078 } 6079 6080 @Override 6081 public void dispatchAppVisibility(boolean visible) { 6082 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6083 if (viewAncestor != null) { 6084 viewAncestor.dispatchAppVisibility(visible); 6085 } 6086 } 6087 6088 @Override 6089 public void dispatchScreenState(boolean on) { 6090 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6091 if (viewAncestor != null) { 6092 viewAncestor.dispatchScreenStateChange(on); 6093 } 6094 } 6095 6096 @Override 6097 public void dispatchGetNewSurface() { 6098 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6099 if (viewAncestor != null) { 6100 viewAncestor.dispatchGetNewSurface(); 6101 } 6102 } 6103 6104 @Override 6105 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 6106 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6107 if (viewAncestor != null) { 6108 viewAncestor.windowFocusChanged(hasFocus, inTouchMode); 6109 } 6110 } 6111 6112 private static int checkCallingPermission(String permission) { 6113 try { 6114 return ActivityManagerNative.getDefault().checkPermission( 6115 permission, Binder.getCallingPid(), Binder.getCallingUid()); 6116 } catch (RemoteException e) { 6117 return PackageManager.PERMISSION_DENIED; 6118 } 6119 } 6120 6121 @Override 6122 public void executeCommand(String command, String parameters, ParcelFileDescriptor out) { 6123 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6124 if (viewAncestor != null) { 6125 final View view = viewAncestor.mView; 6126 if (view != null) { 6127 if (checkCallingPermission(Manifest.permission.DUMP) != 6128 PackageManager.PERMISSION_GRANTED) { 6129 throw new SecurityException("Insufficient permissions to invoke" 6130 + " executeCommand() from pid=" + Binder.getCallingPid() 6131 + ", uid=" + Binder.getCallingUid()); 6132 } 6133 6134 OutputStream clientStream = null; 6135 try { 6136 clientStream = new ParcelFileDescriptor.AutoCloseOutputStream(out); 6137 ViewDebug.dispatchCommand(view, command, parameters, clientStream); 6138 } catch (IOException e) { 6139 e.printStackTrace(); 6140 } finally { 6141 if (clientStream != null) { 6142 try { 6143 clientStream.close(); 6144 } catch (IOException e) { 6145 e.printStackTrace(); 6146 } 6147 } 6148 } 6149 } 6150 } 6151 } 6152 6153 @Override 6154 public void closeSystemDialogs(String reason) { 6155 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6156 if (viewAncestor != null) { 6157 viewAncestor.dispatchCloseSystemDialogs(reason); 6158 } 6159 } 6160 6161 @Override 6162 public void dispatchWallpaperOffsets(float x, float y, float xStep, float yStep, 6163 boolean sync) { 6164 if (sync) { 6165 try { 6166 mWindowSession.wallpaperOffsetsComplete(asBinder()); 6167 } catch (RemoteException e) { 6168 } 6169 } 6170 } 6171 6172 @Override 6173 public void dispatchWallpaperCommand(String action, int x, int y, 6174 int z, Bundle extras, boolean sync) { 6175 if (sync) { 6176 try { 6177 mWindowSession.wallpaperCommandComplete(asBinder(), null); 6178 } catch (RemoteException e) { 6179 } 6180 } 6181 } 6182 6183 /* Drag/drop */ 6184 @Override 6185 public void dispatchDragEvent(DragEvent event) { 6186 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6187 if (viewAncestor != null) { 6188 viewAncestor.dispatchDragEvent(event); 6189 } 6190 } 6191 6192 @Override 6193 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 6194 int localValue, int localChanges) { 6195 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6196 if (viewAncestor != null) { 6197 viewAncestor.dispatchSystemUiVisibilityChanged(seq, globalVisibility, 6198 localValue, localChanges); 6199 } 6200 } 6201 6202 @Override 6203 public void doneAnimating() { 6204 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6205 if (viewAncestor != null) { 6206 viewAncestor.dispatchDoneAnimating(); 6207 } 6208 } 6209 } 6210 6211 public static final class CalledFromWrongThreadException extends AndroidRuntimeException { 6212 public CalledFromWrongThreadException(String msg) { 6213 super(msg); 6214 } 6215 } 6216 6217 private final SurfaceHolder mHolder = new SurfaceHolder() { 6218 // we only need a SurfaceHolder for opengl. it would be nice 6219 // to implement everything else though, especially the callback 6220 // support (opengl doesn't make use of it right now, but eventually 6221 // will). 6222 @Override 6223 public Surface getSurface() { 6224 return mSurface; 6225 } 6226 6227 @Override 6228 public boolean isCreating() { 6229 return false; 6230 } 6231 6232 @Override 6233 public void addCallback(Callback callback) { 6234 } 6235 6236 @Override 6237 public void removeCallback(Callback callback) { 6238 } 6239 6240 @Override 6241 public void setFixedSize(int width, int height) { 6242 } 6243 6244 @Override 6245 public void setSizeFromLayout() { 6246 } 6247 6248 @Override 6249 public void setFormat(int format) { 6250 } 6251 6252 @Override 6253 public void setType(int type) { 6254 } 6255 6256 @Override 6257 public void setKeepScreenOn(boolean screenOn) { 6258 } 6259 6260 @Override 6261 public Canvas lockCanvas() { 6262 return null; 6263 } 6264 6265 @Override 6266 public Canvas lockCanvas(Rect dirty) { 6267 return null; 6268 } 6269 6270 @Override 6271 public void unlockCanvasAndPost(Canvas canvas) { 6272 } 6273 @Override 6274 public Rect getSurfaceFrame() { 6275 return null; 6276 } 6277 }; 6278 6279 static RunQueue getRunQueue() { 6280 RunQueue rq = sRunQueues.get(); 6281 if (rq != null) { 6282 return rq; 6283 } 6284 rq = new RunQueue(); 6285 sRunQueues.set(rq); 6286 return rq; 6287 } 6288 6289 /** 6290 * The run queue is used to enqueue pending work from Views when no Handler is 6291 * attached. The work is executed during the next call to performTraversals on 6292 * the thread. 6293 * @hide 6294 */ 6295 static final class RunQueue { 6296 private final ArrayList<HandlerAction> mActions = new ArrayList<HandlerAction>(); 6297 6298 void post(Runnable action) { 6299 postDelayed(action, 0); 6300 } 6301 6302 void postDelayed(Runnable action, long delayMillis) { 6303 HandlerAction handlerAction = new HandlerAction(); 6304 handlerAction.action = action; 6305 handlerAction.delay = delayMillis; 6306 6307 synchronized (mActions) { 6308 mActions.add(handlerAction); 6309 } 6310 } 6311 6312 void removeCallbacks(Runnable action) { 6313 final HandlerAction handlerAction = new HandlerAction(); 6314 handlerAction.action = action; 6315 6316 synchronized (mActions) { 6317 final ArrayList<HandlerAction> actions = mActions; 6318 6319 while (actions.remove(handlerAction)) { 6320 // Keep going 6321 } 6322 } 6323 } 6324 6325 void executeActions(Handler handler) { 6326 synchronized (mActions) { 6327 final ArrayList<HandlerAction> actions = mActions; 6328 final int count = actions.size(); 6329 6330 for (int i = 0; i < count; i++) { 6331 final HandlerAction handlerAction = actions.get(i); 6332 handler.postDelayed(handlerAction.action, handlerAction.delay); 6333 } 6334 6335 actions.clear(); 6336 } 6337 } 6338 6339 private static class HandlerAction { 6340 Runnable action; 6341 long delay; 6342 6343 @Override 6344 public boolean equals(Object o) { 6345 if (this == o) return true; 6346 if (o == null || getClass() != o.getClass()) return false; 6347 6348 HandlerAction that = (HandlerAction) o; 6349 return !(action != null ? !action.equals(that.action) : that.action != null); 6350 6351 } 6352 6353 @Override 6354 public int hashCode() { 6355 int result = action != null ? action.hashCode() : 0; 6356 result = 31 * result + (int) (delay ^ (delay >>> 32)); 6357 return result; 6358 } 6359 } 6360 } 6361 6362 /** 6363 * Class for managing the accessibility interaction connection 6364 * based on the global accessibility state. 6365 */ 6366 final class AccessibilityInteractionConnectionManager 6367 implements AccessibilityStateChangeListener { 6368 @Override 6369 public void onAccessibilityStateChanged(boolean enabled) { 6370 if (enabled) { 6371 ensureConnection(); 6372 if (mAttachInfo != null && mAttachInfo.mHasWindowFocus) { 6373 mView.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 6374 View focusedView = mView.findFocus(); 6375 if (focusedView != null && focusedView != mView) { 6376 focusedView.sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_FOCUSED); 6377 } 6378 } 6379 } else { 6380 ensureNoConnection(); 6381 mHandler.obtainMessage(MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST).sendToTarget(); 6382 } 6383 } 6384 6385 public void ensureConnection() { 6386 if (mAttachInfo != null) { 6387 final boolean registered = 6388 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED; 6389 if (!registered) { 6390 mAttachInfo.mAccessibilityWindowId = 6391 mAccessibilityManager.addAccessibilityInteractionConnection(mWindow, 6392 new AccessibilityInteractionConnection(ViewRootImpl.this)); 6393 } 6394 } 6395 } 6396 6397 public void ensureNoConnection() { 6398 final boolean registered = 6399 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED; 6400 if (registered) { 6401 mAttachInfo.mAccessibilityWindowId = AccessibilityNodeInfo.UNDEFINED; 6402 mAccessibilityManager.removeAccessibilityInteractionConnection(mWindow); 6403 } 6404 } 6405 } 6406 6407 /** 6408 * This class is an interface this ViewAncestor provides to the 6409 * AccessibilityManagerService to the latter can interact with 6410 * the view hierarchy in this ViewAncestor. 6411 */ 6412 static final class AccessibilityInteractionConnection 6413 extends IAccessibilityInteractionConnection.Stub { 6414 private final WeakReference<ViewRootImpl> mViewRootImpl; 6415 6416 AccessibilityInteractionConnection(ViewRootImpl viewRootImpl) { 6417 mViewRootImpl = new WeakReference<ViewRootImpl>(viewRootImpl); 6418 } 6419 6420 @Override 6421 public void findAccessibilityNodeInfoByAccessibilityId(long accessibilityNodeId, 6422 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 6423 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6424 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6425 if (viewRootImpl != null && viewRootImpl.mView != null) { 6426 viewRootImpl.getAccessibilityInteractionController() 6427 .findAccessibilityNodeInfoByAccessibilityIdClientThread(accessibilityNodeId, 6428 interactionId, callback, flags, interrogatingPid, interrogatingTid, 6429 spec); 6430 } else { 6431 // We cannot make the call and notify the caller so it does not wait. 6432 try { 6433 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 6434 } catch (RemoteException re) { 6435 /* best effort - ignore */ 6436 } 6437 } 6438 } 6439 6440 @Override 6441 public void performAccessibilityAction(long accessibilityNodeId, int action, 6442 Bundle arguments, int interactionId, 6443 IAccessibilityInteractionConnectionCallback callback, int flags, 6444 int interogatingPid, long interrogatingTid) { 6445 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6446 if (viewRootImpl != null && viewRootImpl.mView != null) { 6447 viewRootImpl.getAccessibilityInteractionController() 6448 .performAccessibilityActionClientThread(accessibilityNodeId, action, arguments, 6449 interactionId, callback, flags, interogatingPid, interrogatingTid); 6450 } else { 6451 // We cannot make the call and notify the caller so it does not wait. 6452 try { 6453 callback.setPerformAccessibilityActionResult(false, interactionId); 6454 } catch (RemoteException re) { 6455 /* best effort - ignore */ 6456 } 6457 } 6458 } 6459 6460 @Override 6461 public void findAccessibilityNodeInfosByViewId(long accessibilityNodeId, 6462 String viewId, int interactionId, 6463 IAccessibilityInteractionConnectionCallback callback, int flags, 6464 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6465 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6466 if (viewRootImpl != null && viewRootImpl.mView != null) { 6467 viewRootImpl.getAccessibilityInteractionController() 6468 .findAccessibilityNodeInfosByViewIdClientThread(accessibilityNodeId, 6469 viewId, interactionId, callback, flags, interrogatingPid, 6470 interrogatingTid, spec); 6471 } else { 6472 // We cannot make the call and notify the caller so it does not wait. 6473 try { 6474 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6475 } catch (RemoteException re) { 6476 /* best effort - ignore */ 6477 } 6478 } 6479 } 6480 6481 @Override 6482 public void findAccessibilityNodeInfosByText(long accessibilityNodeId, String text, 6483 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 6484 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6485 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6486 if (viewRootImpl != null && viewRootImpl.mView != null) { 6487 viewRootImpl.getAccessibilityInteractionController() 6488 .findAccessibilityNodeInfosByTextClientThread(accessibilityNodeId, text, 6489 interactionId, callback, flags, interrogatingPid, interrogatingTid, 6490 spec); 6491 } else { 6492 // We cannot make the call and notify the caller so it does not wait. 6493 try { 6494 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 6495 } catch (RemoteException re) { 6496 /* best effort - ignore */ 6497 } 6498 } 6499 } 6500 6501 @Override 6502 public void findFocus(long accessibilityNodeId, int focusType, int interactionId, 6503 IAccessibilityInteractionConnectionCallback callback, int flags, 6504 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6505 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6506 if (viewRootImpl != null && viewRootImpl.mView != null) { 6507 viewRootImpl.getAccessibilityInteractionController() 6508 .findFocusClientThread(accessibilityNodeId, focusType, interactionId, callback, 6509 flags, interrogatingPid, interrogatingTid, spec); 6510 } else { 6511 // We cannot make the call and notify the caller so it does not wait. 6512 try { 6513 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6514 } catch (RemoteException re) { 6515 /* best effort - ignore */ 6516 } 6517 } 6518 } 6519 6520 @Override 6521 public void focusSearch(long accessibilityNodeId, int direction, int interactionId, 6522 IAccessibilityInteractionConnectionCallback callback, int flags, 6523 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6524 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6525 if (viewRootImpl != null && viewRootImpl.mView != null) { 6526 viewRootImpl.getAccessibilityInteractionController() 6527 .focusSearchClientThread(accessibilityNodeId, direction, interactionId, 6528 callback, flags, interrogatingPid, interrogatingTid, spec); 6529 } else { 6530 // We cannot make the call and notify the caller so it does not wait. 6531 try { 6532 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6533 } catch (RemoteException re) { 6534 /* best effort - ignore */ 6535 } 6536 } 6537 } 6538 } 6539 6540 private class SendWindowContentChangedAccessibilityEvent implements Runnable { 6541 public View mSource; 6542 public long mLastEventTimeMillis; 6543 6544 @Override 6545 public void run() { 6546 // The accessibility may be turned off while we were waiting so check again. 6547 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 6548 mLastEventTimeMillis = SystemClock.uptimeMillis(); 6549 AccessibilityEvent event = AccessibilityEvent.obtain(); 6550 event.setEventType(AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED); 6551 event.setContentChangeType(AccessibilityEvent.CONTENT_CHANGE_TYPE_SUBTREE); 6552 mSource.sendAccessibilityEventUnchecked(event); 6553 } else { 6554 mLastEventTimeMillis = 0; 6555 } 6556 // In any case reset to initial state. 6557 mSource.resetSubtreeAccessibilityStateChanged(); 6558 mSource = null; 6559 } 6560 6561 public void runOrPost(View source) { 6562 if (mSource != null) { 6563 // If there is no common predecessor, then mSource points to 6564 // a removed view, hence in this case always prefer the source. 6565 View predecessor = getCommonPredecessor(mSource, source); 6566 mSource = (predecessor != null) ? predecessor : source; 6567 return; 6568 } 6569 mSource = source; 6570 final long timeSinceLastMillis = SystemClock.uptimeMillis() - mLastEventTimeMillis; 6571 final long minEventIntevalMillis = 6572 ViewConfiguration.getSendRecurringAccessibilityEventsInterval(); 6573 if (timeSinceLastMillis >= minEventIntevalMillis) { 6574 mSource.removeCallbacks(this); 6575 run(); 6576 } else { 6577 mSource.postDelayed(this, minEventIntevalMillis - timeSinceLastMillis); 6578 } 6579 } 6580 } 6581} 6582