ViewRootImpl.java revision 832b151465ed81c43e59891d5eebe62128b21fbb
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.Matrix; 32import android.graphics.Paint; 33import android.graphics.PixelFormat; 34import android.graphics.Point; 35import android.graphics.PointF; 36import android.graphics.PorterDuff; 37import android.graphics.Rect; 38import android.graphics.Region; 39import android.graphics.drawable.Drawable; 40import android.hardware.display.DisplayManager; 41import android.hardware.display.DisplayManager.DisplayListener; 42import android.media.AudioManager; 43import android.os.Binder; 44import android.os.Bundle; 45import android.os.Debug; 46import android.os.Handler; 47import android.os.Looper; 48import android.os.Message; 49import android.os.ParcelFileDescriptor; 50import android.os.PowerManager; 51import android.os.Process; 52import android.os.RemoteException; 53import android.os.SystemClock; 54import android.os.SystemProperties; 55import android.os.Trace; 56import android.util.AndroidRuntimeException; 57import android.util.DisplayMetrics; 58import android.util.Log; 59import android.util.Slog; 60import android.util.TypedValue; 61import android.view.Surface.OutOfResourcesException; 62import android.view.View.AttachInfo; 63import android.view.View.MeasureSpec; 64import android.view.accessibility.AccessibilityEvent; 65import android.view.accessibility.AccessibilityManager; 66import android.view.accessibility.AccessibilityManager.AccessibilityStateChangeListener; 67import android.view.accessibility.AccessibilityNodeInfo; 68import android.view.accessibility.AccessibilityNodeProvider; 69import android.view.accessibility.IAccessibilityInteractionConnection; 70import android.view.accessibility.IAccessibilityInteractionConnectionCallback; 71import android.view.animation.AccelerateDecelerateInterpolator; 72import android.view.animation.Interpolator; 73import android.view.inputmethod.InputConnection; 74import android.view.inputmethod.InputMethodManager; 75import android.widget.Scroller; 76 77import com.android.internal.R; 78import com.android.internal.os.SomeArgs; 79import com.android.internal.policy.PolicyManager; 80import com.android.internal.view.BaseSurfaceHolder; 81import com.android.internal.view.RootViewSurfaceTaker; 82 83import java.io.FileDescriptor; 84import java.io.IOException; 85import java.io.OutputStream; 86import java.io.PrintWriter; 87import java.lang.ref.WeakReference; 88import java.util.ArrayList; 89import java.util.HashSet; 90 91/** 92 * The top of a view hierarchy, implementing the needed protocol between View 93 * and the WindowManager. This is for the most part an internal implementation 94 * detail of {@link WindowManagerGlobal}. 95 * 96 * {@hide} 97 */ 98@SuppressWarnings({"EmptyCatchBlock", "PointlessBooleanExpression"}) 99public final class ViewRootImpl implements ViewParent, 100 View.AttachInfo.Callbacks, HardwareRenderer.HardwareDrawCallbacks { 101 private static final String TAG = "ViewRootImpl"; 102 private static final boolean DBG = false; 103 private static final boolean LOCAL_LOGV = false; 104 /** @noinspection PointlessBooleanExpression*/ 105 private static final boolean DEBUG_DRAW = false || LOCAL_LOGV; 106 private static final boolean DEBUG_LAYOUT = false || LOCAL_LOGV; 107 private static final boolean DEBUG_DIALOG = false || LOCAL_LOGV; 108 private static final boolean DEBUG_INPUT_RESIZE = false || LOCAL_LOGV; 109 private static final boolean DEBUG_ORIENTATION = false || LOCAL_LOGV; 110 private static final boolean DEBUG_TRACKBALL = false || LOCAL_LOGV; 111 private static final boolean DEBUG_IMF = false || LOCAL_LOGV; 112 private static final boolean DEBUG_CONFIGURATION = false || LOCAL_LOGV; 113 private static final boolean DEBUG_FPS = false; 114 115 /** 116 * Set this system property to true to force the view hierarchy to render 117 * at 60 Hz. This can be used to measure the potential framerate. 118 */ 119 private static final String PROPERTY_PROFILE_RENDERING = "viewroot.profile_rendering"; 120 private static final String PROPERTY_MEDIA_DISABLED = "config.disable_media"; 121 122 /** 123 * Maximum time we allow the user to roll the trackball enough to generate 124 * a key event, before resetting the counters. 125 */ 126 static final int MAX_TRACKBALL_DELAY = 250; 127 128 static final ThreadLocal<RunQueue> sRunQueues = new ThreadLocal<RunQueue>(); 129 130 static final ArrayList<Runnable> sFirstDrawHandlers = new ArrayList<Runnable>(); 131 static boolean sFirstDrawComplete = false; 132 133 static final ArrayList<ComponentCallbacks> sConfigCallbacks 134 = new ArrayList<ComponentCallbacks>(); 135 136 final Context mContext; 137 final IWindowSession mWindowSession; 138 final Display mDisplay; 139 final DisplayManager mDisplayManager; 140 final String mBasePackageName; 141 142 final int[] mTmpLocation = new int[2]; 143 144 final TypedValue mTmpValue = new TypedValue(); 145 146 final Thread mThread; 147 148 final WindowLeaked mLocation; 149 150 final WindowManager.LayoutParams mWindowAttributes = new WindowManager.LayoutParams(); 151 152 final W mWindow; 153 154 final int mTargetSdkVersion; 155 156 int mSeq; 157 158 View mView; 159 160 View mAccessibilityFocusedHost; 161 AccessibilityNodeInfo mAccessibilityFocusedVirtualView; 162 163 int mViewVisibility; 164 boolean mAppVisible = true; 165 int mOrigWindowType = -1; 166 167 // Set to true if the owner of this window is in the stopped state, 168 // so the window should no longer be active. 169 boolean mStopped = false; 170 171 boolean mLastInCompatMode = false; 172 173 SurfaceHolder.Callback2 mSurfaceHolderCallback; 174 BaseSurfaceHolder mSurfaceHolder; 175 boolean mIsCreating; 176 boolean mDrawingAllowed; 177 178 final Region mTransparentRegion; 179 final Region mPreviousTransparentRegion; 180 181 int mWidth; 182 int mHeight; 183 Rect mDirty; 184 final Rect mCurrentDirty = new Rect(); 185 boolean mIsAnimating; 186 187 CompatibilityInfo.Translator mTranslator; 188 189 final View.AttachInfo mAttachInfo; 190 InputChannel mInputChannel; 191 InputQueue.Callback mInputQueueCallback; 192 InputQueue mInputQueue; 193 FallbackEventHandler mFallbackEventHandler; 194 Choreographer mChoreographer; 195 196 final Rect mTempRect; // used in the transaction to not thrash the heap. 197 final Rect mVisRect; // used to retrieve visible rect of focused view. 198 199 boolean mTraversalScheduled; 200 int mTraversalBarrier; 201 boolean mWillDrawSoon; 202 /** Set to true while in performTraversals for detecting when die(true) is called from internal 203 * callbacks such as onMeasure, onPreDraw, onDraw and deferring doDie() until later. */ 204 boolean mIsInTraversal; 205 boolean mFitSystemWindowsRequested; 206 boolean mLayoutRequested; 207 boolean mFirst; 208 boolean mReportNextDraw; 209 boolean mFullRedrawNeeded; 210 boolean mNewSurfaceNeeded; 211 boolean mHasHadWindowFocus; 212 boolean mLastWasImTarget; 213 boolean mWindowsAnimating; 214 boolean mDrawDuringWindowsAnimating; 215 boolean mIsDrawing; 216 int mLastSystemUiVisibility; 217 int mClientWindowLayoutFlags; 218 boolean mLastOverscanRequested; 219 220 // Pool of queued input events. 221 private static final int MAX_QUEUED_INPUT_EVENT_POOL_SIZE = 10; 222 private QueuedInputEvent mQueuedInputEventPool; 223 private int mQueuedInputEventPoolSize; 224 225 /* Input event queue. 226 * Pending input events are input events waiting to be delivered to the input stages 227 * and handled by the application. 228 */ 229 QueuedInputEvent mPendingInputEventHead; 230 QueuedInputEvent mPendingInputEventTail; 231 int mPendingInputEventCount; 232 boolean mProcessInputEventsScheduled; 233 String mPendingInputEventQueueLengthCounterName = "pq"; 234 235 InputStage mFirstInputStage; 236 InputStage mFirstPostImeInputStage; 237 InputStage mSyntheticInputStage; 238 239 boolean mWindowAttributesChanged = false; 240 int mWindowAttributesChangesFlag = 0; 241 242 // These can be accessed by any thread, must be protected with a lock. 243 // Surface can never be reassigned or cleared (use Surface.clear()). 244 private final Surface mSurface = new Surface(); 245 246 boolean mAdded; 247 boolean mAddedTouchMode; 248 249 final DisplayAdjustments mDisplayAdjustments; 250 251 // These are accessed by multiple threads. 252 final Rect mWinFrame; // frame given by window manager. 253 254 final Rect mPendingOverscanInsets = new Rect(); 255 final Rect mPendingVisibleInsets = new Rect(); 256 final Rect mPendingContentInsets = new Rect(); 257 final ViewTreeObserver.InternalInsetsInfo mLastGivenInsets 258 = new ViewTreeObserver.InternalInsetsInfo(); 259 260 final Rect mFitSystemWindowsInsets = new Rect(); 261 262 final Configuration mLastConfiguration = new Configuration(); 263 final Configuration mPendingConfiguration = new Configuration(); 264 265 boolean mScrollMayChange; 266 int mSoftInputMode; 267 WeakReference<View> mLastScrolledFocus; 268 int mScrollY; 269 int mCurScrollY; 270 Scroller mScroller; 271 HardwareLayer mResizeBuffer; 272 long mResizeBufferStartTime; 273 int mResizeBufferDuration; 274 // Used to block the creation of the ResizeBuffer due to invalidations in 275 // the previous DisplayList tree that must prevent re-execution. 276 // Currently this means a functor was detached. 277 boolean mBlockResizeBuffer; 278 static final Interpolator mResizeInterpolator = new AccelerateDecelerateInterpolator(); 279 private ArrayList<LayoutTransition> mPendingTransitions; 280 281 final ViewConfiguration mViewConfiguration; 282 283 /* Drag/drop */ 284 ClipDescription mDragDescription; 285 View mCurrentDragView; 286 volatile Object mLocalDragState; 287 final PointF mDragPoint = new PointF(); 288 final PointF mLastTouchPoint = new PointF(); 289 290 private boolean mProfileRendering; 291 private Choreographer.FrameCallback mRenderProfiler; 292 private boolean mRenderProfilingEnabled; 293 294 private boolean mMediaDisabled; 295 296 // Variables to track frames per second, enabled via DEBUG_FPS flag 297 private long mFpsStartTime = -1; 298 private long mFpsPrevTime = -1; 299 private int mFpsNumFrames; 300 301 /** 302 * see {@link #playSoundEffect(int)} 303 */ 304 AudioManager mAudioManager; 305 306 final AccessibilityManager mAccessibilityManager; 307 308 AccessibilityInteractionController mAccessibilityInteractionController; 309 310 AccessibilityInteractionConnectionManager mAccessibilityInteractionConnectionManager; 311 312 SendWindowContentChangedAccessibilityEvent mSendWindowContentChangedAccessibilityEvent; 313 314 HashSet<View> mTempHashSet; 315 316 private final int mDensity; 317 private final int mNoncompatDensity; 318 319 private boolean mInLayout = false; 320 ArrayList<View> mLayoutRequesters = new ArrayList<View>(); 321 boolean mHandlingLayoutInLayoutRequest = false; 322 323 private int mViewLayoutDirectionInitial; 324 325 /** Set to true once doDie() has been called. */ 326 private boolean mRemoved; 327 328 /** 329 * Consistency verifier for debugging purposes. 330 */ 331 protected final InputEventConsistencyVerifier mInputEventConsistencyVerifier = 332 InputEventConsistencyVerifier.isInstrumentationEnabled() ? 333 new InputEventConsistencyVerifier(this, 0) : null; 334 335 static final class SystemUiVisibilityInfo { 336 int seq; 337 int globalVisibility; 338 int localValue; 339 int localChanges; 340 } 341 342 public ViewRootImpl(Context context, Display display) { 343 mContext = context; 344 mWindowSession = WindowManagerGlobal.getWindowSession(); 345 mDisplay = display; 346 mBasePackageName = context.getBasePackageName(); 347 348 mDisplayAdjustments = display.getDisplayAdjustments(); 349 350 mThread = Thread.currentThread(); 351 mLocation = new WindowLeaked(null); 352 mLocation.fillInStackTrace(); 353 mWidth = -1; 354 mHeight = -1; 355 mDirty = new Rect(); 356 mTempRect = new Rect(); 357 mVisRect = new Rect(); 358 mWinFrame = new Rect(); 359 mWindow = new W(this); 360 mTargetSdkVersion = context.getApplicationInfo().targetSdkVersion; 361 mViewVisibility = View.GONE; 362 mTransparentRegion = new Region(); 363 mPreviousTransparentRegion = new Region(); 364 mFirst = true; // true for the first time the view is added 365 mAdded = false; 366 mAccessibilityManager = AccessibilityManager.getInstance(context); 367 mAccessibilityInteractionConnectionManager = 368 new AccessibilityInteractionConnectionManager(); 369 mAccessibilityManager.addAccessibilityStateChangeListener( 370 mAccessibilityInteractionConnectionManager); 371 mAttachInfo = new View.AttachInfo(mWindowSession, mWindow, display, this, mHandler, this); 372 mViewConfiguration = ViewConfiguration.get(context); 373 mDensity = context.getResources().getDisplayMetrics().densityDpi; 374 mNoncompatDensity = context.getResources().getDisplayMetrics().noncompatDensityDpi; 375 mFallbackEventHandler = PolicyManager.makeNewFallbackEventHandler(context); 376 mChoreographer = Choreographer.getInstance(); 377 mDisplayManager = (DisplayManager)context.getSystemService(Context.DISPLAY_SERVICE); 378 loadSystemProperties(); 379 } 380 381 public static void addFirstDrawHandler(Runnable callback) { 382 synchronized (sFirstDrawHandlers) { 383 if (!sFirstDrawComplete) { 384 sFirstDrawHandlers.add(callback); 385 } 386 } 387 } 388 389 public static void addConfigCallback(ComponentCallbacks callback) { 390 synchronized (sConfigCallbacks) { 391 sConfigCallbacks.add(callback); 392 } 393 } 394 395 // FIXME for perf testing only 396 private boolean mProfile = false; 397 398 /** 399 * Call this to profile the next traversal call. 400 * FIXME for perf testing only. Remove eventually 401 */ 402 public void profile() { 403 mProfile = true; 404 } 405 406 /** 407 * Indicates whether we are in touch mode. Calling this method triggers an IPC 408 * call and should be avoided whenever possible. 409 * 410 * @return True, if the device is in touch mode, false otherwise. 411 * 412 * @hide 413 */ 414 static boolean isInTouchMode() { 415 IWindowSession windowSession = WindowManagerGlobal.peekWindowSession(); 416 if (windowSession != null) { 417 try { 418 return windowSession.getInTouchMode(); 419 } catch (RemoteException e) { 420 } 421 } 422 return false; 423 } 424 425 /** 426 * We have one child 427 */ 428 public void setView(View view, WindowManager.LayoutParams attrs, View panelParentView) { 429 synchronized (this) { 430 if (mView == null) { 431 mView = view; 432 433 mAttachInfo.mDisplayState = mDisplay.getState(); 434 mDisplayManager.registerDisplayListener(mDisplayListener, mHandler); 435 436 mViewLayoutDirectionInitial = mView.getRawLayoutDirection(); 437 mFallbackEventHandler.setView(view); 438 mWindowAttributes.copyFrom(attrs); 439 if (mWindowAttributes.packageName == null) { 440 mWindowAttributes.packageName = mBasePackageName; 441 } 442 attrs = mWindowAttributes; 443 // Keep track of the actual window flags supplied by the client. 444 mClientWindowLayoutFlags = attrs.flags; 445 446 setAccessibilityFocus(null, null); 447 448 if (view instanceof RootViewSurfaceTaker) { 449 mSurfaceHolderCallback = 450 ((RootViewSurfaceTaker)view).willYouTakeTheSurface(); 451 if (mSurfaceHolderCallback != null) { 452 mSurfaceHolder = new TakenSurfaceHolder(); 453 mSurfaceHolder.setFormat(PixelFormat.UNKNOWN); 454 } 455 } 456 457 CompatibilityInfo compatibilityInfo = mDisplayAdjustments.getCompatibilityInfo(); 458 mTranslator = compatibilityInfo.getTranslator(); 459 mDisplayAdjustments.setActivityToken(attrs.token); 460 461 // If the application owns the surface, don't enable hardware acceleration 462 if (mSurfaceHolder == null) { 463 enableHardwareAcceleration(attrs); 464 } 465 466 boolean restore = false; 467 if (mTranslator != null) { 468 mSurface.setCompatibilityTranslator(mTranslator); 469 restore = true; 470 attrs.backup(); 471 mTranslator.translateWindowLayout(attrs); 472 } 473 if (DEBUG_LAYOUT) Log.d(TAG, "WindowLayout in setView:" + attrs); 474 475 if (!compatibilityInfo.supportsScreen()) { 476 attrs.privateFlags |= WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 477 mLastInCompatMode = true; 478 } 479 480 mSoftInputMode = attrs.softInputMode; 481 mWindowAttributesChanged = true; 482 mWindowAttributesChangesFlag = WindowManager.LayoutParams.EVERYTHING_CHANGED; 483 mAttachInfo.mRootView = view; 484 mAttachInfo.mScalingRequired = mTranslator != null; 485 mAttachInfo.mApplicationScale = 486 mTranslator == null ? 1.0f : mTranslator.applicationScale; 487 if (panelParentView != null) { 488 mAttachInfo.mPanelParentWindowToken 489 = panelParentView.getApplicationWindowToken(); 490 } 491 mAdded = true; 492 int res; /* = WindowManagerImpl.ADD_OKAY; */ 493 494 // Schedule the first layout -before- adding to the window 495 // manager, to make sure we do the relayout before receiving 496 // any other events from the system. 497 requestLayout(); 498 if ((mWindowAttributes.inputFeatures 499 & WindowManager.LayoutParams.INPUT_FEATURE_NO_INPUT_CHANNEL) == 0) { 500 mInputChannel = new InputChannel(); 501 } 502 try { 503 mOrigWindowType = mWindowAttributes.type; 504 mAttachInfo.mRecomputeGlobalAttributes = true; 505 collectViewAttributes(); 506 res = mWindowSession.addToDisplay(mWindow, mSeq, mWindowAttributes, 507 getHostVisibility(), mDisplay.getDisplayId(), 508 mAttachInfo.mContentInsets, mInputChannel); 509 } catch (RemoteException e) { 510 mAdded = false; 511 mView = null; 512 mAttachInfo.mRootView = null; 513 mInputChannel = null; 514 mFallbackEventHandler.setView(null); 515 unscheduleTraversals(); 516 setAccessibilityFocus(null, null); 517 throw new RuntimeException("Adding window failed", e); 518 } finally { 519 if (restore) { 520 attrs.restore(); 521 } 522 } 523 524 if (mTranslator != null) { 525 mTranslator.translateRectInScreenToAppWindow(mAttachInfo.mContentInsets); 526 } 527 mPendingOverscanInsets.set(0, 0, 0, 0); 528 mPendingContentInsets.set(mAttachInfo.mContentInsets); 529 mPendingVisibleInsets.set(0, 0, 0, 0); 530 if (DEBUG_LAYOUT) Log.v(TAG, "Added window " + mWindow); 531 if (res < WindowManagerGlobal.ADD_OKAY) { 532 mAttachInfo.mRootView = null; 533 mAdded = false; 534 mFallbackEventHandler.setView(null); 535 unscheduleTraversals(); 536 setAccessibilityFocus(null, null); 537 switch (res) { 538 case WindowManagerGlobal.ADD_BAD_APP_TOKEN: 539 case WindowManagerGlobal.ADD_BAD_SUBWINDOW_TOKEN: 540 throw new WindowManager.BadTokenException( 541 "Unable to add window -- token " + attrs.token 542 + " is not valid; is your activity running?"); 543 case WindowManagerGlobal.ADD_NOT_APP_TOKEN: 544 throw new WindowManager.BadTokenException( 545 "Unable to add window -- token " + attrs.token 546 + " is not for an application"); 547 case WindowManagerGlobal.ADD_APP_EXITING: 548 throw new WindowManager.BadTokenException( 549 "Unable to add window -- app for token " + attrs.token 550 + " is exiting"); 551 case WindowManagerGlobal.ADD_DUPLICATE_ADD: 552 throw new WindowManager.BadTokenException( 553 "Unable to add window -- window " + mWindow 554 + " has already been added"); 555 case WindowManagerGlobal.ADD_STARTING_NOT_NEEDED: 556 // Silently ignore -- we would have just removed it 557 // right away, anyway. 558 return; 559 case WindowManagerGlobal.ADD_MULTIPLE_SINGLETON: 560 throw new WindowManager.BadTokenException( 561 "Unable to add window " + mWindow + 562 " -- another window of this type already exists"); 563 case WindowManagerGlobal.ADD_PERMISSION_DENIED: 564 throw new WindowManager.BadTokenException( 565 "Unable to add window " + mWindow + 566 " -- permission denied for this window type"); 567 case WindowManagerGlobal.ADD_INVALID_DISPLAY: 568 throw new WindowManager.InvalidDisplayException( 569 "Unable to add window " + mWindow + 570 " -- the specified display can not be found"); 571 } 572 throw new RuntimeException( 573 "Unable to add window -- unknown error code " + res); 574 } 575 576 if (view instanceof RootViewSurfaceTaker) { 577 mInputQueueCallback = 578 ((RootViewSurfaceTaker)view).willYouTakeTheInputQueue(); 579 } 580 if (mInputChannel != null) { 581 if (mInputQueueCallback != null) { 582 mInputQueue = new InputQueue(); 583 mInputQueueCallback.onInputQueueCreated(mInputQueue); 584 } 585 mInputEventReceiver = new WindowInputEventReceiver(mInputChannel, 586 Looper.myLooper()); 587 } 588 589 view.assignParent(this); 590 mAddedTouchMode = (res & WindowManagerGlobal.ADD_FLAG_IN_TOUCH_MODE) != 0; 591 mAppVisible = (res & WindowManagerGlobal.ADD_FLAG_APP_VISIBLE) != 0; 592 593 if (mAccessibilityManager.isEnabled()) { 594 mAccessibilityInteractionConnectionManager.ensureConnection(); 595 } 596 597 if (view.getImportantForAccessibility() == View.IMPORTANT_FOR_ACCESSIBILITY_AUTO) { 598 view.setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_YES); 599 } 600 601 // Set up the input pipeline. 602 CharSequence counterSuffix = attrs.getTitle(); 603 mSyntheticInputStage = new SyntheticInputStage(); 604 InputStage viewPostImeStage = new ViewPostImeInputStage(mSyntheticInputStage); 605 InputStage nativePostImeStage = new NativePostImeInputStage(viewPostImeStage, 606 "aq:native-post-ime:" + counterSuffix); 607 InputStage earlyPostImeStage = new EarlyPostImeInputStage(nativePostImeStage); 608 InputStage imeStage = new ImeInputStage(earlyPostImeStage, 609 "aq:ime:" + counterSuffix); 610 InputStage viewPreImeStage = new ViewPreImeInputStage(imeStage); 611 InputStage nativePreImeStage = new NativePreImeInputStage(viewPreImeStage, 612 "aq:native-pre-ime:" + counterSuffix); 613 614 mFirstInputStage = nativePreImeStage; 615 mFirstPostImeInputStage = earlyPostImeStage; 616 mPendingInputEventQueueLengthCounterName = "aq:pending:" + counterSuffix; 617 } 618 } 619 } 620 621 /** Whether the window is in local focus mode or not */ 622 private boolean isInLocalFocusMode() { 623 return (mWindowAttributes.flags & WindowManager.LayoutParams.FLAG_LOCAL_FOCUS_MODE) != 0; 624 } 625 626 void destroyHardwareResources() { 627 if (mAttachInfo.mHardwareRenderer != null) { 628 mAttachInfo.mHardwareRenderer.destroyHardwareResources(mView); 629 mAttachInfo.mHardwareRenderer.destroy(false); 630 } 631 } 632 633 void destroyHardwareLayers() { 634 if (mThread != Thread.currentThread()) { 635 if (mAttachInfo.mHardwareRenderer != null && 636 mAttachInfo.mHardwareRenderer.isEnabled()) { 637 HardwareRenderer.trimMemory(ComponentCallbacks2.TRIM_MEMORY_MODERATE); 638 } 639 } else { 640 destroyHardwareLayer(mView); 641 } 642 } 643 644 private static void destroyHardwareLayer(View view) { 645 view.destroyLayer(true); 646 647 if (view instanceof ViewGroup) { 648 ViewGroup group = (ViewGroup) view; 649 650 int count = group.getChildCount(); 651 for (int i = 0; i < count; i++) { 652 destroyHardwareLayer(group.getChildAt(i)); 653 } 654 } 655 } 656 657 void flushHardwareLayerUpdates() { 658 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled()) { 659 mAttachInfo.mHardwareRenderer.flushLayerUpdates(); 660 } 661 } 662 663 void dispatchFlushHardwareLayerUpdates() { 664 mHandler.removeMessages(MSG_FLUSH_LAYER_UPDATES); 665 mHandler.sendMessageAtFrontOfQueue(mHandler.obtainMessage(MSG_FLUSH_LAYER_UPDATES)); 666 } 667 668 public void detachFunctor(long functor) { 669 // TODO: Make the resize buffer some other way to not need this block 670 mBlockResizeBuffer = true; 671 } 672 673 public boolean invokeFunctor(long functor, boolean waitForCompletion) { 674 if (mAttachInfo.mHardwareRenderer == null || !mAttachInfo.mHardwareRenderer.isEnabled()) { 675 return false; 676 } 677 mAttachInfo.mHardwareRenderer.invokeFunctor(functor, waitForCompletion); 678 return true; 679 } 680 681 private void enableHardwareAcceleration(WindowManager.LayoutParams attrs) { 682 mAttachInfo.mHardwareAccelerated = false; 683 mAttachInfo.mHardwareAccelerationRequested = false; 684 685 // Don't enable hardware acceleration when the application is in compatibility mode 686 if (mTranslator != null) return; 687 688 // Try to enable hardware acceleration if requested 689 final boolean hardwareAccelerated = 690 (attrs.flags & WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED) != 0; 691 692 if (hardwareAccelerated) { 693 if (!HardwareRenderer.isAvailable()) { 694 return; 695 } 696 697 // Persistent processes (including the system) should not do 698 // accelerated rendering on low-end devices. In that case, 699 // sRendererDisabled will be set. In addition, the system process 700 // itself should never do accelerated rendering. In that case, both 701 // sRendererDisabled and sSystemRendererDisabled are set. When 702 // sSystemRendererDisabled is set, PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED 703 // can be used by code on the system process to escape that and enable 704 // HW accelerated drawing. (This is basically for the lock screen.) 705 706 final boolean fakeHwAccelerated = (attrs.privateFlags & 707 WindowManager.LayoutParams.PRIVATE_FLAG_FAKE_HARDWARE_ACCELERATED) != 0; 708 final boolean forceHwAccelerated = (attrs.privateFlags & 709 WindowManager.LayoutParams.PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED) != 0; 710 711 if (!HardwareRenderer.sRendererDisabled || (HardwareRenderer.sSystemRendererDisabled 712 && forceHwAccelerated)) { 713 // Don't enable hardware acceleration when we're not on the main thread 714 if (!HardwareRenderer.sSystemRendererDisabled && 715 Looper.getMainLooper() != Looper.myLooper()) { 716 Log.w(HardwareRenderer.LOG_TAG, "Attempting to initialize hardware " 717 + "acceleration outside of the main thread, aborting"); 718 return; 719 } 720 721 if (mAttachInfo.mHardwareRenderer != null) { 722 mAttachInfo.mHardwareRenderer.destroy(true); 723 } 724 725 final boolean translucent = attrs.format != PixelFormat.OPAQUE; 726 mAttachInfo.mHardwareRenderer = HardwareRenderer.create(translucent); 727 if (mAttachInfo.mHardwareRenderer != null) { 728 mAttachInfo.mHardwareRenderer.setName(attrs.getTitle().toString()); 729 mAttachInfo.mHardwareAccelerated = 730 mAttachInfo.mHardwareAccelerationRequested = true; 731 } 732 } else if (fakeHwAccelerated) { 733 // The window had wanted to use hardware acceleration, but this 734 // is not allowed in its process. By setting this flag, it can 735 // still render as if it was accelerated. This is basically for 736 // the preview windows the window manager shows for launching 737 // applications, so they will look more like the app being launched. 738 mAttachInfo.mHardwareAccelerationRequested = true; 739 } 740 } 741 } 742 743 public View getView() { 744 return mView; 745 } 746 747 final WindowLeaked getLocation() { 748 return mLocation; 749 } 750 751 void setLayoutParams(WindowManager.LayoutParams attrs, boolean newView) { 752 synchronized (this) { 753 int oldSoftInputMode = mWindowAttributes.softInputMode; 754 // Keep track of the actual window flags supplied by the client. 755 mClientWindowLayoutFlags = attrs.flags; 756 // preserve compatible window flag if exists. 757 int compatibleWindowFlag = mWindowAttributes.privateFlags 758 & WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 759 // transfer over system UI visibility values as they carry current state. 760 attrs.systemUiVisibility = mWindowAttributes.systemUiVisibility; 761 attrs.subtreeSystemUiVisibility = mWindowAttributes.subtreeSystemUiVisibility; 762 mWindowAttributesChangesFlag = mWindowAttributes.copyFrom(attrs); 763 if ((mWindowAttributesChangesFlag 764 & WindowManager.LayoutParams.TRANSLUCENT_FLAGS_CHANGED) != 0) { 765 // Recompute system ui visibility. 766 mAttachInfo.mRecomputeGlobalAttributes = true; 767 } 768 if (mWindowAttributes.packageName == null) { 769 mWindowAttributes.packageName = mBasePackageName; 770 } 771 mWindowAttributes.privateFlags |= compatibleWindowFlag; 772 773 applyKeepScreenOnFlag(mWindowAttributes); 774 775 if (newView) { 776 mSoftInputMode = attrs.softInputMode; 777 requestLayout(); 778 } 779 // Don't lose the mode we last auto-computed. 780 if ((attrs.softInputMode&WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 781 == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 782 mWindowAttributes.softInputMode = (mWindowAttributes.softInputMode 783 & ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 784 | (oldSoftInputMode 785 & WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST); 786 } 787 mWindowAttributesChanged = true; 788 scheduleTraversals(); 789 } 790 } 791 792 void handleAppVisibility(boolean visible) { 793 if (mAppVisible != visible) { 794 mAppVisible = visible; 795 scheduleTraversals(); 796 } 797 } 798 799 void handleGetNewSurface() { 800 mNewSurfaceNeeded = true; 801 mFullRedrawNeeded = true; 802 scheduleTraversals(); 803 } 804 805 private final DisplayListener mDisplayListener = new DisplayListener() { 806 @Override 807 public void onDisplayChanged(int displayId) { 808 if (mView != null && mDisplay.getDisplayId() == displayId) { 809 final int oldDisplayState = mAttachInfo.mDisplayState; 810 final int newDisplayState = mDisplay.getState(); 811 if (oldDisplayState != newDisplayState) { 812 mAttachInfo.mDisplayState = newDisplayState; 813 if (oldDisplayState != Display.STATE_UNKNOWN) { 814 final int oldScreenState = toViewScreenState(oldDisplayState); 815 final int newScreenState = toViewScreenState(newDisplayState); 816 if (oldScreenState != newScreenState) { 817 mView.dispatchScreenStateChanged(newScreenState); 818 } 819 if (oldDisplayState == Display.STATE_OFF) { 820 // Draw was suppressed so we need to for it to happen here. 821 mFullRedrawNeeded = true; 822 scheduleTraversals(); 823 } 824 } 825 } 826 } 827 } 828 829 @Override 830 public void onDisplayRemoved(int displayId) { 831 } 832 833 @Override 834 public void onDisplayAdded(int displayId) { 835 } 836 837 private int toViewScreenState(int displayState) { 838 return displayState == Display.STATE_OFF ? 839 View.SCREEN_STATE_OFF : View.SCREEN_STATE_ON; 840 } 841 }; 842 843 @Override 844 public void requestFitSystemWindows() { 845 checkThread(); 846 mFitSystemWindowsRequested = true; 847 scheduleTraversals(); 848 } 849 850 @Override 851 public void requestLayout() { 852 if (!mHandlingLayoutInLayoutRequest) { 853 checkThread(); 854 mLayoutRequested = true; 855 scheduleTraversals(); 856 } 857 } 858 859 @Override 860 public boolean isLayoutRequested() { 861 return mLayoutRequested; 862 } 863 864 void invalidate() { 865 mDirty.set(0, 0, mWidth, mHeight); 866 scheduleTraversals(); 867 } 868 869 void invalidateWorld(View view) { 870 view.invalidate(); 871 if (view instanceof ViewGroup) { 872 ViewGroup parent = (ViewGroup) view; 873 for (int i = 0; i < parent.getChildCount(); i++) { 874 invalidateWorld(parent.getChildAt(i)); 875 } 876 } 877 } 878 879 @Override 880 public void invalidateChild(View child, Rect dirty) { 881 invalidateChildInParent(null, dirty); 882 } 883 884 @Override 885 public ViewParent invalidateChildInParent(int[] location, Rect dirty) { 886 checkThread(); 887 if (DEBUG_DRAW) Log.v(TAG, "Invalidate child: " + dirty); 888 889 if (dirty == null) { 890 invalidate(); 891 return null; 892 } else if (dirty.isEmpty() && !mIsAnimating) { 893 return null; 894 } 895 896 if (mCurScrollY != 0 || mTranslator != null) { 897 mTempRect.set(dirty); 898 dirty = mTempRect; 899 if (mCurScrollY != 0) { 900 dirty.offset(0, -mCurScrollY); 901 } 902 if (mTranslator != null) { 903 mTranslator.translateRectInAppWindowToScreen(dirty); 904 } 905 if (mAttachInfo.mScalingRequired) { 906 dirty.inset(-1, -1); 907 } 908 } 909 910 final Rect localDirty = mDirty; 911 if (!localDirty.isEmpty() && !localDirty.contains(dirty)) { 912 mAttachInfo.mSetIgnoreDirtyState = true; 913 mAttachInfo.mIgnoreDirtyState = true; 914 } 915 916 // Add the new dirty rect to the current one 917 localDirty.union(dirty.left, dirty.top, dirty.right, dirty.bottom); 918 // Intersect with the bounds of the window to skip 919 // updates that lie outside of the visible region 920 final float appScale = mAttachInfo.mApplicationScale; 921 final boolean intersected = localDirty.intersect(0, 0, 922 (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 923 if (!intersected) { 924 localDirty.setEmpty(); 925 } 926 if (!mWillDrawSoon && (intersected || mIsAnimating)) { 927 scheduleTraversals(); 928 } 929 930 return null; 931 } 932 933 void setStopped(boolean stopped) { 934 if (mStopped != stopped) { 935 mStopped = stopped; 936 if (!stopped) { 937 scheduleTraversals(); 938 } 939 } 940 } 941 942 @Override 943 public ViewParent getParent() { 944 return null; 945 } 946 947 @Override 948 public boolean getChildVisibleRect(View child, Rect r, android.graphics.Point offset) { 949 if (child != mView) { 950 throw new RuntimeException("child is not mine, honest!"); 951 } 952 // Note: don't apply scroll offset, because we want to know its 953 // visibility in the virtual canvas being given to the view hierarchy. 954 return r.intersect(0, 0, mWidth, mHeight); 955 } 956 957 @Override 958 public void bringChildToFront(View child) { 959 } 960 961 int getHostVisibility() { 962 return mAppVisible ? mView.getVisibility() : View.GONE; 963 } 964 965 void disposeResizeBuffer() { 966 if (mResizeBuffer != null) { 967 mResizeBuffer.destroy(); 968 mResizeBuffer = null; 969 } 970 } 971 972 /** 973 * Add LayoutTransition to the list of transitions to be started in the next traversal. 974 * This list will be cleared after the transitions on the list are start()'ed. These 975 * transitionsa re added by LayoutTransition itself when it sets up animations. The setup 976 * happens during the layout phase of traversal, which we want to complete before any of the 977 * animations are started (because those animations may side-effect properties that layout 978 * depends upon, like the bounding rectangles of the affected views). So we add the transition 979 * to the list and it is started just prior to starting the drawing phase of traversal. 980 * 981 * @param transition The LayoutTransition to be started on the next traversal. 982 * 983 * @hide 984 */ 985 public void requestTransitionStart(LayoutTransition transition) { 986 if (mPendingTransitions == null || !mPendingTransitions.contains(transition)) { 987 if (mPendingTransitions == null) { 988 mPendingTransitions = new ArrayList<LayoutTransition>(); 989 } 990 mPendingTransitions.add(transition); 991 } 992 } 993 994 void scheduleTraversals() { 995 if (!mTraversalScheduled) { 996 mTraversalScheduled = true; 997 mTraversalBarrier = mHandler.getLooper().postSyncBarrier(); 998 mChoreographer.postCallback( 999 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 1000 scheduleConsumeBatchedInput(); 1001 } 1002 } 1003 1004 void unscheduleTraversals() { 1005 if (mTraversalScheduled) { 1006 mTraversalScheduled = false; 1007 mHandler.getLooper().removeSyncBarrier(mTraversalBarrier); 1008 mChoreographer.removeCallbacks( 1009 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 1010 } 1011 } 1012 1013 void doTraversal() { 1014 if (mTraversalScheduled) { 1015 mTraversalScheduled = false; 1016 mHandler.getLooper().removeSyncBarrier(mTraversalBarrier); 1017 1018 if (mProfile) { 1019 Debug.startMethodTracing("ViewAncestor"); 1020 } 1021 1022 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "performTraversals"); 1023 try { 1024 performTraversals(); 1025 } finally { 1026 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 1027 } 1028 1029 if (mProfile) { 1030 Debug.stopMethodTracing(); 1031 mProfile = false; 1032 } 1033 } 1034 } 1035 1036 private void applyKeepScreenOnFlag(WindowManager.LayoutParams params) { 1037 // Update window's global keep screen on flag: if a view has requested 1038 // that the screen be kept on, then it is always set; otherwise, it is 1039 // set to whatever the client last requested for the global state. 1040 if (mAttachInfo.mKeepScreenOn) { 1041 params.flags |= WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON; 1042 } else { 1043 params.flags = (params.flags&~WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON) 1044 | (mClientWindowLayoutFlags&WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 1045 } 1046 } 1047 1048 private boolean collectViewAttributes() { 1049 final View.AttachInfo attachInfo = mAttachInfo; 1050 if (attachInfo.mRecomputeGlobalAttributes) { 1051 //Log.i(TAG, "Computing view hierarchy attributes!"); 1052 attachInfo.mRecomputeGlobalAttributes = false; 1053 boolean oldScreenOn = attachInfo.mKeepScreenOn; 1054 attachInfo.mKeepScreenOn = false; 1055 attachInfo.mSystemUiVisibility = 0; 1056 attachInfo.mHasSystemUiListeners = false; 1057 mView.dispatchCollectViewAttributes(attachInfo, 0); 1058 attachInfo.mSystemUiVisibility &= ~attachInfo.mDisabledSystemUiVisibility; 1059 WindowManager.LayoutParams params = mWindowAttributes; 1060 attachInfo.mSystemUiVisibility |= getImpliedSystemUiVisibility(params); 1061 if (attachInfo.mKeepScreenOn != oldScreenOn 1062 || attachInfo.mSystemUiVisibility != params.subtreeSystemUiVisibility 1063 || attachInfo.mHasSystemUiListeners != params.hasSystemUiListeners) { 1064 applyKeepScreenOnFlag(params); 1065 params.subtreeSystemUiVisibility = attachInfo.mSystemUiVisibility; 1066 params.hasSystemUiListeners = attachInfo.mHasSystemUiListeners; 1067 mView.dispatchWindowSystemUiVisiblityChanged(attachInfo.mSystemUiVisibility); 1068 return true; 1069 } 1070 } 1071 return false; 1072 } 1073 1074 private int getImpliedSystemUiVisibility(WindowManager.LayoutParams params) { 1075 int vis = 0; 1076 // Translucent decor window flags imply stable system ui visibility. 1077 if ((params.flags & WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS) != 0) { 1078 vis |= View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN; 1079 } 1080 if ((params.flags & WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION) != 0) { 1081 vis |= View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION; 1082 } 1083 return vis; 1084 } 1085 1086 private boolean measureHierarchy(final View host, final WindowManager.LayoutParams lp, 1087 final Resources res, final int desiredWindowWidth, final int desiredWindowHeight) { 1088 int childWidthMeasureSpec; 1089 int childHeightMeasureSpec; 1090 boolean windowSizeMayChange = false; 1091 1092 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) Log.v(TAG, 1093 "Measuring " + host + " in display " + desiredWindowWidth 1094 + "x" + desiredWindowHeight + "..."); 1095 1096 boolean goodMeasure = false; 1097 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT) { 1098 // On large screens, we don't want to allow dialogs to just 1099 // stretch to fill the entire width of the screen to display 1100 // one line of text. First try doing the layout at a smaller 1101 // size to see if it will fit. 1102 final DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1103 res.getValue(com.android.internal.R.dimen.config_prefDialogWidth, mTmpValue, true); 1104 int baseSize = 0; 1105 if (mTmpValue.type == TypedValue.TYPE_DIMENSION) { 1106 baseSize = (int)mTmpValue.getDimension(packageMetrics); 1107 } 1108 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": baseSize=" + baseSize); 1109 if (baseSize != 0 && desiredWindowWidth > baseSize) { 1110 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1111 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1112 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1113 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": measured (" 1114 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1115 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1116 goodMeasure = true; 1117 } else { 1118 // Didn't fit in that size... try expanding a bit. 1119 baseSize = (baseSize+desiredWindowWidth)/2; 1120 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": next baseSize=" 1121 + baseSize); 1122 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1123 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1124 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": measured (" 1125 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1126 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1127 if (DEBUG_DIALOG) Log.v(TAG, "Good!"); 1128 goodMeasure = true; 1129 } 1130 } 1131 } 1132 } 1133 1134 if (!goodMeasure) { 1135 childWidthMeasureSpec = getRootMeasureSpec(desiredWindowWidth, lp.width); 1136 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1137 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1138 if (mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) { 1139 windowSizeMayChange = true; 1140 } 1141 } 1142 1143 if (DBG) { 1144 System.out.println("======================================"); 1145 System.out.println("performTraversals -- after measure"); 1146 host.debug(); 1147 } 1148 1149 return windowSizeMayChange; 1150 } 1151 1152 /** 1153 * Modifies the input matrix such that it maps view-local coordinates to 1154 * on-screen coordinates. 1155 * 1156 * @param m input matrix to modify 1157 */ 1158 void transformMatrixToGlobal(Matrix m) { 1159 final View.AttachInfo attachInfo = mAttachInfo; 1160 m.postTranslate(attachInfo.mWindowLeft, attachInfo.mWindowTop); 1161 } 1162 1163 /** 1164 * Modifies the input matrix such that it maps on-screen coordinates to 1165 * view-local coordinates. 1166 * 1167 * @param m input matrix to modify 1168 */ 1169 void transformMatrixToLocal(Matrix m) { 1170 final View.AttachInfo attachInfo = mAttachInfo; 1171 m.preTranslate(-attachInfo.mWindowLeft, -attachInfo.mWindowTop); 1172 } 1173 1174 void dispatchApplyInsets(View host) { 1175 mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets); 1176 boolean isRound = false; 1177 if ((mWindowAttributes.flags & WindowManager.LayoutParams.FLAG_LAYOUT_IN_OVERSCAN) != 0 1178 && mDisplay.getDisplayId() == 0) { 1179 // we're fullscreen and not hosted in an ActivityView 1180 isRound = mContext.getResources().getBoolean( 1181 com.android.internal.R.bool.config_windowIsRound); 1182 } 1183 host.dispatchApplyWindowInsets(new WindowInsets( 1184 mFitSystemWindowsInsets, isRound)); 1185 } 1186 1187 private void performTraversals() { 1188 // cache mView since it is used so much below... 1189 final View host = mView; 1190 1191 if (DBG) { 1192 System.out.println("======================================"); 1193 System.out.println("performTraversals"); 1194 host.debug(); 1195 } 1196 1197 if (host == null || !mAdded) 1198 return; 1199 1200 mIsInTraversal = true; 1201 mWillDrawSoon = true; 1202 boolean windowSizeMayChange = false; 1203 boolean newSurface = false; 1204 boolean surfaceChanged = false; 1205 WindowManager.LayoutParams lp = mWindowAttributes; 1206 1207 int desiredWindowWidth; 1208 int desiredWindowHeight; 1209 1210 final View.AttachInfo attachInfo = mAttachInfo; 1211 1212 final int viewVisibility = getHostVisibility(); 1213 boolean viewVisibilityChanged = mViewVisibility != viewVisibility 1214 || mNewSurfaceNeeded; 1215 1216 WindowManager.LayoutParams params = null; 1217 if (mWindowAttributesChanged) { 1218 mWindowAttributesChanged = false; 1219 surfaceChanged = true; 1220 params = lp; 1221 } 1222 CompatibilityInfo compatibilityInfo = mDisplayAdjustments.getCompatibilityInfo(); 1223 if (compatibilityInfo.supportsScreen() == mLastInCompatMode) { 1224 params = lp; 1225 mFullRedrawNeeded = true; 1226 mLayoutRequested = true; 1227 if (mLastInCompatMode) { 1228 params.privateFlags &= ~WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 1229 mLastInCompatMode = false; 1230 } else { 1231 params.privateFlags |= WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 1232 mLastInCompatMode = true; 1233 } 1234 } 1235 1236 mWindowAttributesChangesFlag = 0; 1237 1238 Rect frame = mWinFrame; 1239 if (mFirst) { 1240 mFullRedrawNeeded = true; 1241 mLayoutRequested = true; 1242 1243 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL 1244 || lp.type == WindowManager.LayoutParams.TYPE_INPUT_METHOD) { 1245 // NOTE -- system code, won't try to do compat mode. 1246 Point size = new Point(); 1247 mDisplay.getRealSize(size); 1248 desiredWindowWidth = size.x; 1249 desiredWindowHeight = size.y; 1250 } else { 1251 DisplayMetrics packageMetrics = 1252 mView.getContext().getResources().getDisplayMetrics(); 1253 desiredWindowWidth = packageMetrics.widthPixels; 1254 desiredWindowHeight = packageMetrics.heightPixels; 1255 } 1256 1257 // We used to use the following condition to choose 32 bits drawing caches: 1258 // PixelFormat.hasAlpha(lp.format) || lp.format == PixelFormat.RGBX_8888 1259 // However, windows are now always 32 bits by default, so choose 32 bits 1260 attachInfo.mUse32BitDrawingCache = true; 1261 attachInfo.mHasWindowFocus = false; 1262 attachInfo.mWindowVisibility = viewVisibility; 1263 attachInfo.mRecomputeGlobalAttributes = false; 1264 viewVisibilityChanged = false; 1265 mLastConfiguration.setTo(host.getResources().getConfiguration()); 1266 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1267 // Set the layout direction if it has not been set before (inherit is the default) 1268 if (mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 1269 host.setLayoutDirection(mLastConfiguration.getLayoutDirection()); 1270 } 1271 host.dispatchAttachedToWindow(attachInfo, 0); 1272 attachInfo.mTreeObserver.dispatchOnWindowAttachedChange(true); 1273 dispatchApplyInsets(host); 1274 //Log.i(TAG, "Screen on initialized: " + attachInfo.mKeepScreenOn); 1275 1276 } else { 1277 desiredWindowWidth = frame.width(); 1278 desiredWindowHeight = frame.height(); 1279 if (desiredWindowWidth != mWidth || desiredWindowHeight != mHeight) { 1280 if (DEBUG_ORIENTATION) Log.v(TAG, 1281 "View " + host + " resized to: " + frame); 1282 mFullRedrawNeeded = true; 1283 mLayoutRequested = true; 1284 windowSizeMayChange = true; 1285 } 1286 } 1287 1288 if (viewVisibilityChanged) { 1289 attachInfo.mWindowVisibility = viewVisibility; 1290 host.dispatchWindowVisibilityChanged(viewVisibility); 1291 if (viewVisibility != View.VISIBLE || mNewSurfaceNeeded) { 1292 destroyHardwareResources(); 1293 } 1294 if (viewVisibility == View.GONE) { 1295 // After making a window gone, we will count it as being 1296 // shown for the first time the next time it gets focus. 1297 mHasHadWindowFocus = false; 1298 } 1299 } 1300 1301 // Execute enqueued actions on every traversal in case a detached view enqueued an action 1302 getRunQueue().executeActions(attachInfo.mHandler); 1303 1304 boolean insetsChanged = false; 1305 1306 boolean layoutRequested = mLayoutRequested && !mStopped; 1307 if (layoutRequested) { 1308 1309 final Resources res = mView.getContext().getResources(); 1310 1311 if (mFirst) { 1312 // make sure touch mode code executes by setting cached value 1313 // to opposite of the added touch mode. 1314 mAttachInfo.mInTouchMode = !mAddedTouchMode; 1315 ensureTouchModeLocally(mAddedTouchMode); 1316 } else { 1317 if (!mPendingOverscanInsets.equals(mAttachInfo.mOverscanInsets)) { 1318 insetsChanged = true; 1319 } 1320 if (!mPendingContentInsets.equals(mAttachInfo.mContentInsets)) { 1321 insetsChanged = true; 1322 } 1323 if (!mPendingVisibleInsets.equals(mAttachInfo.mVisibleInsets)) { 1324 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1325 if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: " 1326 + mAttachInfo.mVisibleInsets); 1327 } 1328 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT 1329 || lp.height == ViewGroup.LayoutParams.WRAP_CONTENT) { 1330 windowSizeMayChange = true; 1331 1332 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL 1333 || lp.type == WindowManager.LayoutParams.TYPE_INPUT_METHOD) { 1334 // NOTE -- system code, won't try to do compat mode. 1335 Point size = new Point(); 1336 mDisplay.getRealSize(size); 1337 desiredWindowWidth = size.x; 1338 desiredWindowHeight = size.y; 1339 } else { 1340 DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1341 desiredWindowWidth = packageMetrics.widthPixels; 1342 desiredWindowHeight = packageMetrics.heightPixels; 1343 } 1344 } 1345 } 1346 1347 // Ask host how big it wants to be 1348 windowSizeMayChange |= measureHierarchy(host, lp, res, 1349 desiredWindowWidth, desiredWindowHeight); 1350 } 1351 1352 if (collectViewAttributes()) { 1353 params = lp; 1354 } 1355 if (attachInfo.mForceReportNewAttributes) { 1356 attachInfo.mForceReportNewAttributes = false; 1357 params = lp; 1358 } 1359 1360 if (mFirst || attachInfo.mViewVisibilityChanged) { 1361 attachInfo.mViewVisibilityChanged = false; 1362 int resizeMode = mSoftInputMode & 1363 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST; 1364 // If we are in auto resize mode, then we need to determine 1365 // what mode to use now. 1366 if (resizeMode == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 1367 final int N = attachInfo.mScrollContainers.size(); 1368 for (int i=0; i<N; i++) { 1369 if (attachInfo.mScrollContainers.get(i).isShown()) { 1370 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE; 1371 } 1372 } 1373 if (resizeMode == 0) { 1374 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_PAN; 1375 } 1376 if ((lp.softInputMode & 1377 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) != resizeMode) { 1378 lp.softInputMode = (lp.softInputMode & 1379 ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) | 1380 resizeMode; 1381 params = lp; 1382 } 1383 } 1384 } 1385 1386 if (params != null) { 1387 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 1388 if (!PixelFormat.formatHasAlpha(params.format)) { 1389 params.format = PixelFormat.TRANSLUCENT; 1390 } 1391 } 1392 mAttachInfo.mOverscanRequested = (params.flags 1393 & WindowManager.LayoutParams.FLAG_LAYOUT_IN_OVERSCAN) != 0; 1394 } 1395 1396 if (mFitSystemWindowsRequested) { 1397 mFitSystemWindowsRequested = false; 1398 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1399 dispatchApplyInsets(host); 1400 if (mLayoutRequested) { 1401 // Short-circuit catching a new layout request here, so 1402 // we don't need to go through two layout passes when things 1403 // change due to fitting system windows, which can happen a lot. 1404 windowSizeMayChange |= measureHierarchy(host, lp, 1405 mView.getContext().getResources(), 1406 desiredWindowWidth, desiredWindowHeight); 1407 } 1408 } 1409 1410 if (layoutRequested) { 1411 // Clear this now, so that if anything requests a layout in the 1412 // rest of this function we will catch it and re-run a full 1413 // layout pass. 1414 mLayoutRequested = false; 1415 } 1416 1417 boolean windowShouldResize = layoutRequested && windowSizeMayChange 1418 && ((mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) 1419 || (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT && 1420 frame.width() < desiredWindowWidth && frame.width() != mWidth) 1421 || (lp.height == ViewGroup.LayoutParams.WRAP_CONTENT && 1422 frame.height() < desiredWindowHeight && frame.height() != mHeight)); 1423 1424 // Determine whether to compute insets. 1425 // If there are no inset listeners remaining then we may still need to compute 1426 // insets in case the old insets were non-empty and must be reset. 1427 final boolean computesInternalInsets = 1428 attachInfo.mTreeObserver.hasComputeInternalInsetsListeners() 1429 || attachInfo.mHasNonEmptyGivenInternalInsets; 1430 1431 boolean insetsPending = false; 1432 int relayoutResult = 0; 1433 1434 if (mFirst || windowShouldResize || insetsChanged || 1435 viewVisibilityChanged || params != null) { 1436 1437 if (viewVisibility == View.VISIBLE) { 1438 // If this window is giving internal insets to the window 1439 // manager, and it is being added or changing its visibility, 1440 // then we want to first give the window manager "fake" 1441 // insets to cause it to effectively ignore the content of 1442 // the window during layout. This avoids it briefly causing 1443 // other windows to resize/move based on the raw frame of the 1444 // window, waiting until we can finish laying out this window 1445 // and get back to the window manager with the ultimately 1446 // computed insets. 1447 insetsPending = computesInternalInsets && (mFirst || viewVisibilityChanged); 1448 } 1449 1450 if (mSurfaceHolder != null) { 1451 mSurfaceHolder.mSurfaceLock.lock(); 1452 mDrawingAllowed = true; 1453 } 1454 1455 boolean hwInitialized = false; 1456 boolean contentInsetsChanged = false; 1457 boolean hadSurface = mSurface.isValid(); 1458 1459 try { 1460 if (DEBUG_LAYOUT) { 1461 Log.i(TAG, "host=w:" + host.getMeasuredWidth() + ", h:" + 1462 host.getMeasuredHeight() + ", params=" + params); 1463 } 1464 1465 if (mAttachInfo.mHardwareRenderer != null) { 1466 // relayoutWindow may decide to destroy mSurface. As that decision 1467 // happens in WindowManager service, we need to be defensive here 1468 // and stop using the surface in case it gets destroyed. 1469 mAttachInfo.mHardwareRenderer.pauseSurface(mSurface); 1470 } 1471 final int surfaceGenerationId = mSurface.getGenerationId(); 1472 relayoutResult = relayoutWindow(params, viewVisibility, insetsPending); 1473 if (!mDrawDuringWindowsAnimating && 1474 (relayoutResult & WindowManagerGlobal.RELAYOUT_RES_ANIMATING) != 0) { 1475 mWindowsAnimating = true; 1476 } 1477 1478 if (DEBUG_LAYOUT) Log.v(TAG, "relayout: frame=" + frame.toShortString() 1479 + " overscan=" + mPendingOverscanInsets.toShortString() 1480 + " content=" + mPendingContentInsets.toShortString() 1481 + " visible=" + mPendingVisibleInsets.toShortString() 1482 + " surface=" + mSurface); 1483 1484 if (mPendingConfiguration.seq != 0) { 1485 if (DEBUG_CONFIGURATION) Log.v(TAG, "Visible with new config: " 1486 + mPendingConfiguration); 1487 updateConfiguration(mPendingConfiguration, !mFirst); 1488 mPendingConfiguration.seq = 0; 1489 } 1490 1491 final boolean overscanInsetsChanged = !mPendingOverscanInsets.equals( 1492 mAttachInfo.mOverscanInsets); 1493 contentInsetsChanged = !mPendingContentInsets.equals( 1494 mAttachInfo.mContentInsets); 1495 final boolean visibleInsetsChanged = !mPendingVisibleInsets.equals( 1496 mAttachInfo.mVisibleInsets); 1497 if (contentInsetsChanged) { 1498 if (mWidth > 0 && mHeight > 0 && lp != null && 1499 ((lp.systemUiVisibility|lp.subtreeSystemUiVisibility) 1500 & View.SYSTEM_UI_LAYOUT_FLAGS) == 0 && 1501 mSurface != null && mSurface.isValid() && 1502 !mAttachInfo.mTurnOffWindowResizeAnim && 1503 mAttachInfo.mHardwareRenderer != null && 1504 mAttachInfo.mHardwareRenderer.isEnabled() && 1505 lp != null && !PixelFormat.formatHasAlpha(lp.format) 1506 && !mBlockResizeBuffer) { 1507 1508 disposeResizeBuffer(); 1509 1510 if (mResizeBuffer == null) { 1511 mResizeBuffer = mAttachInfo.mHardwareRenderer.createDisplayListLayer( 1512 mWidth, mHeight); 1513 } 1514 mResizeBuffer.prepare(mWidth, mHeight, false); 1515 RenderNode layerRenderNode = mResizeBuffer.startRecording(); 1516 HardwareCanvas layerCanvas = layerRenderNode.start(mWidth, mHeight); 1517 try { 1518 final int restoreCount = layerCanvas.save(); 1519 1520 int yoff; 1521 final boolean scrolling = mScroller != null 1522 && mScroller.computeScrollOffset(); 1523 if (scrolling) { 1524 yoff = mScroller.getCurrY(); 1525 mScroller.abortAnimation(); 1526 } else { 1527 yoff = mScrollY; 1528 } 1529 1530 layerCanvas.translate(0, -yoff); 1531 if (mTranslator != null) { 1532 mTranslator.translateCanvas(layerCanvas); 1533 } 1534 1535 RenderNode renderNode = mView.mRenderNode; 1536 if (renderNode != null && renderNode.isValid()) { 1537 layerCanvas.drawDisplayList(renderNode, null, 1538 RenderNode.FLAG_CLIP_CHILDREN); 1539 } else { 1540 mView.draw(layerCanvas); 1541 } 1542 1543 drawAccessibilityFocusedDrawableIfNeeded(layerCanvas); 1544 1545 mResizeBufferStartTime = SystemClock.uptimeMillis(); 1546 mResizeBufferDuration = mView.getResources().getInteger( 1547 com.android.internal.R.integer.config_mediumAnimTime); 1548 1549 layerCanvas.restoreToCount(restoreCount); 1550 layerRenderNode.end(layerCanvas); 1551 layerRenderNode.setCaching(true); 1552 layerRenderNode.setLeftTopRightBottom(0, 0, mWidth, mHeight); 1553 mTempRect.set(0, 0, mWidth, mHeight); 1554 } finally { 1555 mResizeBuffer.endRecording(mTempRect); 1556 } 1557 mAttachInfo.mHardwareRenderer.flushLayerUpdates(); 1558 } 1559 mAttachInfo.mContentInsets.set(mPendingContentInsets); 1560 if (DEBUG_LAYOUT) Log.v(TAG, "Content insets changing to: " 1561 + mAttachInfo.mContentInsets); 1562 } 1563 if (overscanInsetsChanged) { 1564 mAttachInfo.mOverscanInsets.set(mPendingOverscanInsets); 1565 if (DEBUG_LAYOUT) Log.v(TAG, "Overscan insets changing to: " 1566 + mAttachInfo.mOverscanInsets); 1567 // Need to relayout with content insets. 1568 contentInsetsChanged = true; 1569 } 1570 if (contentInsetsChanged || mLastSystemUiVisibility != 1571 mAttachInfo.mSystemUiVisibility || mFitSystemWindowsRequested 1572 || mLastOverscanRequested != mAttachInfo.mOverscanRequested) { 1573 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1574 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1575 mFitSystemWindowsRequested = false; 1576 dispatchApplyInsets(host); 1577 } 1578 if (visibleInsetsChanged) { 1579 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1580 if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: " 1581 + mAttachInfo.mVisibleInsets); 1582 } 1583 1584 if (!hadSurface) { 1585 if (mSurface.isValid()) { 1586 // If we are creating a new surface, then we need to 1587 // completely redraw it. Also, when we get to the 1588 // point of drawing it we will hold off and schedule 1589 // a new traversal instead. This is so we can tell the 1590 // window manager about all of the windows being displayed 1591 // before actually drawing them, so it can display then 1592 // all at once. 1593 newSurface = true; 1594 mFullRedrawNeeded = true; 1595 mPreviousTransparentRegion.setEmpty(); 1596 1597 if (mAttachInfo.mHardwareRenderer != null) { 1598 try { 1599 hwInitialized = mAttachInfo.mHardwareRenderer.initialize( 1600 mSurface); 1601 } catch (OutOfResourcesException e) { 1602 handleOutOfResourcesException(e); 1603 return; 1604 } 1605 } 1606 } 1607 } else if (!mSurface.isValid()) { 1608 // If the surface has been removed, then reset the scroll 1609 // positions. 1610 if (mLastScrolledFocus != null) { 1611 mLastScrolledFocus.clear(); 1612 } 1613 mScrollY = mCurScrollY = 0; 1614 if (mScroller != null) { 1615 mScroller.abortAnimation(); 1616 } 1617 disposeResizeBuffer(); 1618 // Our surface is gone 1619 if (mAttachInfo.mHardwareRenderer != null && 1620 mAttachInfo.mHardwareRenderer.isEnabled()) { 1621 mAttachInfo.mHardwareRenderer.destroy(true); 1622 } 1623 } else if (surfaceGenerationId != mSurface.getGenerationId() && 1624 mSurfaceHolder == null && mAttachInfo.mHardwareRenderer != null) { 1625 mFullRedrawNeeded = true; 1626 try { 1627 mAttachInfo.mHardwareRenderer.updateSurface(mSurface); 1628 } catch (OutOfResourcesException e) { 1629 handleOutOfResourcesException(e); 1630 return; 1631 } 1632 } 1633 } catch (RemoteException e) { 1634 } 1635 1636 if (DEBUG_ORIENTATION) Log.v( 1637 TAG, "Relayout returned: frame=" + frame + ", surface=" + mSurface); 1638 1639 attachInfo.mWindowLeft = frame.left; 1640 attachInfo.mWindowTop = frame.top; 1641 1642 // !!FIXME!! This next section handles the case where we did not get the 1643 // window size we asked for. We should avoid this by getting a maximum size from 1644 // the window session beforehand. 1645 if (mWidth != frame.width() || mHeight != frame.height()) { 1646 mWidth = frame.width(); 1647 mHeight = frame.height(); 1648 } 1649 1650 if (mSurfaceHolder != null) { 1651 // The app owns the surface; tell it about what is going on. 1652 if (mSurface.isValid()) { 1653 // XXX .copyFrom() doesn't work! 1654 //mSurfaceHolder.mSurface.copyFrom(mSurface); 1655 mSurfaceHolder.mSurface = mSurface; 1656 } 1657 mSurfaceHolder.setSurfaceFrameSize(mWidth, mHeight); 1658 mSurfaceHolder.mSurfaceLock.unlock(); 1659 if (mSurface.isValid()) { 1660 if (!hadSurface) { 1661 mSurfaceHolder.ungetCallbacks(); 1662 1663 mIsCreating = true; 1664 mSurfaceHolderCallback.surfaceCreated(mSurfaceHolder); 1665 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1666 if (callbacks != null) { 1667 for (SurfaceHolder.Callback c : callbacks) { 1668 c.surfaceCreated(mSurfaceHolder); 1669 } 1670 } 1671 surfaceChanged = true; 1672 } 1673 if (surfaceChanged) { 1674 mSurfaceHolderCallback.surfaceChanged(mSurfaceHolder, 1675 lp.format, mWidth, mHeight); 1676 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1677 if (callbacks != null) { 1678 for (SurfaceHolder.Callback c : callbacks) { 1679 c.surfaceChanged(mSurfaceHolder, lp.format, 1680 mWidth, mHeight); 1681 } 1682 } 1683 } 1684 mIsCreating = false; 1685 } else if (hadSurface) { 1686 mSurfaceHolder.ungetCallbacks(); 1687 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1688 mSurfaceHolderCallback.surfaceDestroyed(mSurfaceHolder); 1689 if (callbacks != null) { 1690 for (SurfaceHolder.Callback c : callbacks) { 1691 c.surfaceDestroyed(mSurfaceHolder); 1692 } 1693 } 1694 mSurfaceHolder.mSurfaceLock.lock(); 1695 try { 1696 mSurfaceHolder.mSurface = new Surface(); 1697 } finally { 1698 mSurfaceHolder.mSurfaceLock.unlock(); 1699 } 1700 } 1701 } 1702 1703 if (mAttachInfo.mHardwareRenderer != null && 1704 mAttachInfo.mHardwareRenderer.isEnabled()) { 1705 if (hwInitialized || 1706 mWidth != mAttachInfo.mHardwareRenderer.getWidth() || 1707 mHeight != mAttachInfo.mHardwareRenderer.getHeight()) { 1708 mAttachInfo.mHardwareRenderer.setup(mWidth, mHeight); 1709 if (!hwInitialized) { 1710 mAttachInfo.mHardwareRenderer.invalidate(mSurface); 1711 mFullRedrawNeeded = true; 1712 } 1713 } 1714 } 1715 1716 if (!mStopped) { 1717 boolean focusChangedDueToTouchMode = ensureTouchModeLocally( 1718 (relayoutResult&WindowManagerGlobal.RELAYOUT_RES_IN_TOUCH_MODE) != 0); 1719 if (focusChangedDueToTouchMode || mWidth != host.getMeasuredWidth() 1720 || mHeight != host.getMeasuredHeight() || contentInsetsChanged) { 1721 int childWidthMeasureSpec = getRootMeasureSpec(mWidth, lp.width); 1722 int childHeightMeasureSpec = getRootMeasureSpec(mHeight, lp.height); 1723 1724 if (DEBUG_LAYOUT) Log.v(TAG, "Ooops, something changed! mWidth=" 1725 + mWidth + " measuredWidth=" + host.getMeasuredWidth() 1726 + " mHeight=" + mHeight 1727 + " measuredHeight=" + host.getMeasuredHeight() 1728 + " coveredInsetsChanged=" + contentInsetsChanged); 1729 1730 // Ask host how big it wants to be 1731 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1732 1733 // Implementation of weights from WindowManager.LayoutParams 1734 // We just grow the dimensions as needed and re-measure if 1735 // needs be 1736 int width = host.getMeasuredWidth(); 1737 int height = host.getMeasuredHeight(); 1738 boolean measureAgain = false; 1739 1740 if (lp.horizontalWeight > 0.0f) { 1741 width += (int) ((mWidth - width) * lp.horizontalWeight); 1742 childWidthMeasureSpec = MeasureSpec.makeMeasureSpec(width, 1743 MeasureSpec.EXACTLY); 1744 measureAgain = true; 1745 } 1746 if (lp.verticalWeight > 0.0f) { 1747 height += (int) ((mHeight - height) * lp.verticalWeight); 1748 childHeightMeasureSpec = MeasureSpec.makeMeasureSpec(height, 1749 MeasureSpec.EXACTLY); 1750 measureAgain = true; 1751 } 1752 1753 if (measureAgain) { 1754 if (DEBUG_LAYOUT) Log.v(TAG, 1755 "And hey let's measure once more: width=" + width 1756 + " height=" + height); 1757 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1758 } 1759 1760 layoutRequested = true; 1761 } 1762 } 1763 } else { 1764 // Not the first pass and no window/insets/visibility change but the window 1765 // may have moved and we need check that and if so to update the left and right 1766 // in the attach info. We translate only the window frame since on window move 1767 // the window manager tells us only for the new frame but the insets are the 1768 // same and we do not want to translate them more than once. 1769 1770 // TODO: Well, we are checking whether the frame has changed similarly 1771 // to how this is done for the insets. This is however incorrect since 1772 // the insets and the frame are translated. For example, the old frame 1773 // was (1, 1 - 1, 1) and was translated to say (2, 2 - 2, 2), now the new 1774 // reported frame is (2, 2 - 2, 2) which implies no change but this is not 1775 // true since we are comparing a not translated value to a translated one. 1776 // This scenario is rare but we may want to fix that. 1777 1778 final boolean windowMoved = (attachInfo.mWindowLeft != frame.left 1779 || attachInfo.mWindowTop != frame.top); 1780 if (windowMoved) { 1781 if (mTranslator != null) { 1782 mTranslator.translateRectInScreenToAppWinFrame(frame); 1783 } 1784 attachInfo.mWindowLeft = frame.left; 1785 attachInfo.mWindowTop = frame.top; 1786 } 1787 } 1788 1789 final boolean didLayout = layoutRequested && !mStopped; 1790 boolean triggerGlobalLayoutListener = didLayout 1791 || attachInfo.mRecomputeGlobalAttributes; 1792 if (didLayout) { 1793 performLayout(lp, desiredWindowWidth, desiredWindowHeight); 1794 1795 // By this point all views have been sized and positioned 1796 // We can compute the transparent area 1797 1798 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 1799 // start out transparent 1800 // TODO: AVOID THAT CALL BY CACHING THE RESULT? 1801 host.getLocationInWindow(mTmpLocation); 1802 mTransparentRegion.set(mTmpLocation[0], mTmpLocation[1], 1803 mTmpLocation[0] + host.mRight - host.mLeft, 1804 mTmpLocation[1] + host.mBottom - host.mTop); 1805 1806 host.gatherTransparentRegion(mTransparentRegion); 1807 if (mTranslator != null) { 1808 mTranslator.translateRegionInWindowToScreen(mTransparentRegion); 1809 } 1810 1811 if (!mTransparentRegion.equals(mPreviousTransparentRegion)) { 1812 mPreviousTransparentRegion.set(mTransparentRegion); 1813 mFullRedrawNeeded = true; 1814 // reconfigure window manager 1815 try { 1816 mWindowSession.setTransparentRegion(mWindow, mTransparentRegion); 1817 } catch (RemoteException e) { 1818 } 1819 } 1820 } 1821 1822 if (DBG) { 1823 System.out.println("======================================"); 1824 System.out.println("performTraversals -- after setFrame"); 1825 host.debug(); 1826 } 1827 } 1828 1829 if (triggerGlobalLayoutListener) { 1830 attachInfo.mRecomputeGlobalAttributes = false; 1831 attachInfo.mTreeObserver.dispatchOnGlobalLayout(); 1832 } 1833 1834 if (computesInternalInsets) { 1835 // Clear the original insets. 1836 final ViewTreeObserver.InternalInsetsInfo insets = attachInfo.mGivenInternalInsets; 1837 insets.reset(); 1838 1839 // Compute new insets in place. 1840 attachInfo.mTreeObserver.dispatchOnComputeInternalInsets(insets); 1841 attachInfo.mHasNonEmptyGivenInternalInsets = !insets.isEmpty(); 1842 1843 // Tell the window manager. 1844 if (insetsPending || !mLastGivenInsets.equals(insets)) { 1845 mLastGivenInsets.set(insets); 1846 1847 // Translate insets to screen coordinates if needed. 1848 final Rect contentInsets; 1849 final Rect visibleInsets; 1850 final Region touchableRegion; 1851 if (mTranslator != null) { 1852 contentInsets = mTranslator.getTranslatedContentInsets(insets.contentInsets); 1853 visibleInsets = mTranslator.getTranslatedVisibleInsets(insets.visibleInsets); 1854 touchableRegion = mTranslator.getTranslatedTouchableArea(insets.touchableRegion); 1855 } else { 1856 contentInsets = insets.contentInsets; 1857 visibleInsets = insets.visibleInsets; 1858 touchableRegion = insets.touchableRegion; 1859 } 1860 1861 try { 1862 mWindowSession.setInsets(mWindow, insets.mTouchableInsets, 1863 contentInsets, visibleInsets, touchableRegion); 1864 } catch (RemoteException e) { 1865 } 1866 } 1867 } 1868 1869 boolean skipDraw = false; 1870 1871 if (mFirst) { 1872 // handle first focus request 1873 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: mView.hasFocus()=" 1874 + mView.hasFocus()); 1875 if (mView != null) { 1876 if (!mView.hasFocus()) { 1877 mView.requestFocus(View.FOCUS_FORWARD); 1878 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: requested focused view=" 1879 + mView.findFocus()); 1880 } else { 1881 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: existing focused view=" 1882 + mView.findFocus()); 1883 } 1884 } 1885 if ((relayoutResult & WindowManagerGlobal.RELAYOUT_RES_ANIMATING) != 0) { 1886 // The first time we relayout the window, if the system is 1887 // doing window animations, we want to hold of on any future 1888 // draws until the animation is done. 1889 mWindowsAnimating = true; 1890 } 1891 } else if (mWindowsAnimating) { 1892 skipDraw = true; 1893 } 1894 1895 mFirst = false; 1896 mWillDrawSoon = false; 1897 mNewSurfaceNeeded = false; 1898 mViewVisibility = viewVisibility; 1899 1900 if (mAttachInfo.mHasWindowFocus && !isInLocalFocusMode()) { 1901 final boolean imTarget = WindowManager.LayoutParams 1902 .mayUseInputMethod(mWindowAttributes.flags); 1903 if (imTarget != mLastWasImTarget) { 1904 mLastWasImTarget = imTarget; 1905 InputMethodManager imm = InputMethodManager.peekInstance(); 1906 if (imm != null && imTarget) { 1907 imm.startGettingWindowFocus(mView); 1908 imm.onWindowFocus(mView, mView.findFocus(), 1909 mWindowAttributes.softInputMode, 1910 !mHasHadWindowFocus, mWindowAttributes.flags); 1911 } 1912 } 1913 } 1914 1915 // Remember if we must report the next draw. 1916 if ((relayoutResult & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 1917 mReportNextDraw = true; 1918 } 1919 1920 boolean cancelDraw = attachInfo.mTreeObserver.dispatchOnPreDraw() || 1921 viewVisibility != View.VISIBLE; 1922 1923 if (!cancelDraw && !newSurface) { 1924 if (!skipDraw || mReportNextDraw) { 1925 if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 1926 for (int i = 0; i < mPendingTransitions.size(); ++i) { 1927 mPendingTransitions.get(i).startChangingAnimations(); 1928 } 1929 mPendingTransitions.clear(); 1930 } 1931 1932 performDraw(); 1933 } 1934 } else { 1935 if (viewVisibility == View.VISIBLE) { 1936 // Try again 1937 scheduleTraversals(); 1938 } else if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 1939 for (int i = 0; i < mPendingTransitions.size(); ++i) { 1940 mPendingTransitions.get(i).endChangingAnimations(); 1941 } 1942 mPendingTransitions.clear(); 1943 } 1944 } 1945 1946 mIsInTraversal = false; 1947 } 1948 1949 private void handleOutOfResourcesException(Surface.OutOfResourcesException e) { 1950 Log.e(TAG, "OutOfResourcesException initializing HW surface", e); 1951 try { 1952 if (!mWindowSession.outOfMemory(mWindow) && 1953 Process.myUid() != Process.SYSTEM_UID) { 1954 Slog.w(TAG, "No processes killed for memory; killing self"); 1955 Process.killProcess(Process.myPid()); 1956 } 1957 } catch (RemoteException ex) { 1958 } 1959 mLayoutRequested = true; // ask wm for a new surface next time. 1960 } 1961 1962 private void performMeasure(int childWidthMeasureSpec, int childHeightMeasureSpec) { 1963 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "measure"); 1964 try { 1965 mView.measure(childWidthMeasureSpec, childHeightMeasureSpec); 1966 } finally { 1967 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 1968 } 1969 } 1970 1971 /** 1972 * Called by {@link android.view.View#isInLayout()} to determine whether the view hierarchy 1973 * is currently undergoing a layout pass. 1974 * 1975 * @return whether the view hierarchy is currently undergoing a layout pass 1976 */ 1977 boolean isInLayout() { 1978 return mInLayout; 1979 } 1980 1981 /** 1982 * Called by {@link android.view.View#requestLayout()} if the view hierarchy is currently 1983 * undergoing a layout pass. requestLayout() should not generally be called during layout, 1984 * unless the container hierarchy knows what it is doing (i.e., it is fine as long as 1985 * all children in that container hierarchy are measured and laid out at the end of the layout 1986 * pass for that container). If requestLayout() is called anyway, we handle it correctly 1987 * by registering all requesters during a frame as it proceeds. At the end of the frame, 1988 * we check all of those views to see if any still have pending layout requests, which 1989 * indicates that they were not correctly handled by their container hierarchy. If that is 1990 * the case, we clear all such flags in the tree, to remove the buggy flag state that leads 1991 * to blank containers, and force a second request/measure/layout pass in this frame. If 1992 * more requestLayout() calls are received during that second layout pass, we post those 1993 * requests to the next frame to avoid possible infinite loops. 1994 * 1995 * <p>The return value from this method indicates whether the request should proceed 1996 * (if it is a request during the first layout pass) or should be skipped and posted to the 1997 * next frame (if it is a request during the second layout pass).</p> 1998 * 1999 * @param view the view that requested the layout. 2000 * 2001 * @return true if request should proceed, false otherwise. 2002 */ 2003 boolean requestLayoutDuringLayout(final View view) { 2004 if (view.mParent == null || view.mAttachInfo == null) { 2005 // Would not normally trigger another layout, so just let it pass through as usual 2006 return true; 2007 } 2008 if (!mLayoutRequesters.contains(view)) { 2009 mLayoutRequesters.add(view); 2010 } 2011 if (!mHandlingLayoutInLayoutRequest) { 2012 // Let the request proceed normally; it will be processed in a second layout pass 2013 // if necessary 2014 return true; 2015 } else { 2016 // Don't let the request proceed during the second layout pass. 2017 // It will post to the next frame instead. 2018 return false; 2019 } 2020 } 2021 2022 private void performLayout(WindowManager.LayoutParams lp, int desiredWindowWidth, 2023 int desiredWindowHeight) { 2024 mLayoutRequested = false; 2025 mScrollMayChange = true; 2026 mInLayout = true; 2027 2028 final View host = mView; 2029 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) { 2030 Log.v(TAG, "Laying out " + host + " to (" + 2031 host.getMeasuredWidth() + ", " + host.getMeasuredHeight() + ")"); 2032 } 2033 2034 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "layout"); 2035 try { 2036 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 2037 2038 mInLayout = false; 2039 int numViewsRequestingLayout = mLayoutRequesters.size(); 2040 if (numViewsRequestingLayout > 0) { 2041 // requestLayout() was called during layout. 2042 // If no layout-request flags are set on the requesting views, there is no problem. 2043 // If some requests are still pending, then we need to clear those flags and do 2044 // a full request/measure/layout pass to handle this situation. 2045 ArrayList<View> validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, 2046 false); 2047 if (validLayoutRequesters != null) { 2048 // Set this flag to indicate that any further requests are happening during 2049 // the second pass, which may result in posting those requests to the next 2050 // frame instead 2051 mHandlingLayoutInLayoutRequest = true; 2052 2053 // Process fresh layout requests, then measure and layout 2054 int numValidRequests = validLayoutRequesters.size(); 2055 for (int i = 0; i < numValidRequests; ++i) { 2056 final View view = validLayoutRequesters.get(i); 2057 Log.w("View", "requestLayout() improperly called by " + view + 2058 " during layout: running second layout pass"); 2059 view.requestLayout(); 2060 } 2061 measureHierarchy(host, lp, mView.getContext().getResources(), 2062 desiredWindowWidth, desiredWindowHeight); 2063 mInLayout = true; 2064 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 2065 2066 mHandlingLayoutInLayoutRequest = false; 2067 2068 // Check the valid requests again, this time without checking/clearing the 2069 // layout flags, since requests happening during the second pass get noop'd 2070 validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, true); 2071 if (validLayoutRequesters != null) { 2072 final ArrayList<View> finalRequesters = validLayoutRequesters; 2073 // Post second-pass requests to the next frame 2074 getRunQueue().post(new Runnable() { 2075 @Override 2076 public void run() { 2077 int numValidRequests = finalRequesters.size(); 2078 for (int i = 0; i < numValidRequests; ++i) { 2079 final View view = finalRequesters.get(i); 2080 Log.w("View", "requestLayout() improperly called by " + view + 2081 " during second layout pass: posting in next frame"); 2082 view.requestLayout(); 2083 } 2084 } 2085 }); 2086 } 2087 } 2088 2089 } 2090 } finally { 2091 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2092 } 2093 mInLayout = false; 2094 } 2095 2096 /** 2097 * This method is called during layout when there have been calls to requestLayout() during 2098 * layout. It walks through the list of views that requested layout to determine which ones 2099 * still need it, based on visibility in the hierarchy and whether they have already been 2100 * handled (as is usually the case with ListView children). 2101 * 2102 * @param layoutRequesters The list of views that requested layout during layout 2103 * @param secondLayoutRequests Whether the requests were issued during the second layout pass. 2104 * If so, the FORCE_LAYOUT flag was not set on requesters. 2105 * @return A list of the actual views that still need to be laid out. 2106 */ 2107 private ArrayList<View> getValidLayoutRequesters(ArrayList<View> layoutRequesters, 2108 boolean secondLayoutRequests) { 2109 2110 int numViewsRequestingLayout = layoutRequesters.size(); 2111 ArrayList<View> validLayoutRequesters = null; 2112 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2113 View view = layoutRequesters.get(i); 2114 if (view != null && view.mAttachInfo != null && view.mParent != null && 2115 (secondLayoutRequests || (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) == 2116 View.PFLAG_FORCE_LAYOUT)) { 2117 boolean gone = false; 2118 View parent = view; 2119 // Only trigger new requests for views in a non-GONE hierarchy 2120 while (parent != null) { 2121 if ((parent.mViewFlags & View.VISIBILITY_MASK) == View.GONE) { 2122 gone = true; 2123 break; 2124 } 2125 if (parent.mParent instanceof View) { 2126 parent = (View) parent.mParent; 2127 } else { 2128 parent = null; 2129 } 2130 } 2131 if (!gone) { 2132 if (validLayoutRequesters == null) { 2133 validLayoutRequesters = new ArrayList<View>(); 2134 } 2135 validLayoutRequesters.add(view); 2136 } 2137 } 2138 } 2139 if (!secondLayoutRequests) { 2140 // If we're checking the layout flags, then we need to clean them up also 2141 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2142 View view = layoutRequesters.get(i); 2143 while (view != null && 2144 (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) != 0) { 2145 view.mPrivateFlags &= ~View.PFLAG_FORCE_LAYOUT; 2146 if (view.mParent instanceof View) { 2147 view = (View) view.mParent; 2148 } else { 2149 view = null; 2150 } 2151 } 2152 } 2153 } 2154 layoutRequesters.clear(); 2155 return validLayoutRequesters; 2156 } 2157 2158 @Override 2159 public void requestTransparentRegion(View child) { 2160 // the test below should not fail unless someone is messing with us 2161 checkThread(); 2162 if (mView == child) { 2163 mView.mPrivateFlags |= View.PFLAG_REQUEST_TRANSPARENT_REGIONS; 2164 // Need to make sure we re-evaluate the window attributes next 2165 // time around, to ensure the window has the correct format. 2166 mWindowAttributesChanged = true; 2167 mWindowAttributesChangesFlag = 0; 2168 requestLayout(); 2169 } 2170 } 2171 2172 /** 2173 * Figures out the measure spec for the root view in a window based on it's 2174 * layout params. 2175 * 2176 * @param windowSize 2177 * The available width or height of the window 2178 * 2179 * @param rootDimension 2180 * The layout params for one dimension (width or height) of the 2181 * window. 2182 * 2183 * @return The measure spec to use to measure the root view. 2184 */ 2185 private static int getRootMeasureSpec(int windowSize, int rootDimension) { 2186 int measureSpec; 2187 switch (rootDimension) { 2188 2189 case ViewGroup.LayoutParams.MATCH_PARENT: 2190 // Window can't resize. Force root view to be windowSize. 2191 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.EXACTLY); 2192 break; 2193 case ViewGroup.LayoutParams.WRAP_CONTENT: 2194 // Window can resize. Set max size for root view. 2195 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.AT_MOST); 2196 break; 2197 default: 2198 // Window wants to be an exact size. Force root view to be that size. 2199 measureSpec = MeasureSpec.makeMeasureSpec(rootDimension, MeasureSpec.EXACTLY); 2200 break; 2201 } 2202 return measureSpec; 2203 } 2204 2205 int mHardwareYOffset; 2206 int mResizeAlpha; 2207 final Paint mResizePaint = new Paint(); 2208 2209 @Override 2210 public void onHardwarePreDraw(HardwareCanvas canvas) { 2211 canvas.translate(0, -mHardwareYOffset); 2212 } 2213 2214 @Override 2215 public void onHardwarePostDraw(HardwareCanvas canvas) { 2216 if (mResizeBuffer != null) { 2217 mResizePaint.setAlpha(mResizeAlpha); 2218 canvas.drawHardwareLayer(mResizeBuffer, 0.0f, mHardwareYOffset, mResizePaint); 2219 } 2220 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2221 } 2222 2223 /** 2224 * @hide 2225 */ 2226 void outputDisplayList(View view) { 2227 RenderNode renderNode = view.getDisplayList(); 2228 if (renderNode != null) { 2229 renderNode.output(); 2230 } 2231 } 2232 2233 /** 2234 * @see #PROPERTY_PROFILE_RENDERING 2235 */ 2236 private void profileRendering(boolean enabled) { 2237 if (mProfileRendering) { 2238 mRenderProfilingEnabled = enabled; 2239 2240 if (mRenderProfiler != null) { 2241 mChoreographer.removeFrameCallback(mRenderProfiler); 2242 } 2243 if (mRenderProfilingEnabled) { 2244 if (mRenderProfiler == null) { 2245 mRenderProfiler = new Choreographer.FrameCallback() { 2246 @Override 2247 public void doFrame(long frameTimeNanos) { 2248 mDirty.set(0, 0, mWidth, mHeight); 2249 scheduleTraversals(); 2250 if (mRenderProfilingEnabled) { 2251 mChoreographer.postFrameCallback(mRenderProfiler); 2252 } 2253 } 2254 }; 2255 } 2256 mChoreographer.postFrameCallback(mRenderProfiler); 2257 } else { 2258 mRenderProfiler = null; 2259 } 2260 } 2261 } 2262 2263 /** 2264 * Called from draw() when DEBUG_FPS is enabled 2265 */ 2266 private void trackFPS() { 2267 // Tracks frames per second drawn. First value in a series of draws may be bogus 2268 // because it down not account for the intervening idle time 2269 long nowTime = System.currentTimeMillis(); 2270 if (mFpsStartTime < 0) { 2271 mFpsStartTime = mFpsPrevTime = nowTime; 2272 mFpsNumFrames = 0; 2273 } else { 2274 ++mFpsNumFrames; 2275 String thisHash = Integer.toHexString(System.identityHashCode(this)); 2276 long frameTime = nowTime - mFpsPrevTime; 2277 long totalTime = nowTime - mFpsStartTime; 2278 Log.v(TAG, "0x" + thisHash + "\tFrame time:\t" + frameTime); 2279 mFpsPrevTime = nowTime; 2280 if (totalTime > 1000) { 2281 float fps = (float) mFpsNumFrames * 1000 / totalTime; 2282 Log.v(TAG, "0x" + thisHash + "\tFPS:\t" + fps); 2283 mFpsStartTime = nowTime; 2284 mFpsNumFrames = 0; 2285 } 2286 } 2287 } 2288 2289 private void performDraw() { 2290 if (mAttachInfo.mDisplayState == Display.STATE_OFF && !mReportNextDraw) { 2291 return; 2292 } 2293 2294 final boolean fullRedrawNeeded = mFullRedrawNeeded; 2295 mFullRedrawNeeded = false; 2296 2297 mIsDrawing = true; 2298 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "draw"); 2299 try { 2300 draw(fullRedrawNeeded); 2301 } finally { 2302 mIsDrawing = false; 2303 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2304 } 2305 2306 if (mReportNextDraw) { 2307 mReportNextDraw = false; 2308 if (mAttachInfo.mHardwareRenderer != null) { 2309 mAttachInfo.mHardwareRenderer.fence(); 2310 } 2311 2312 if (LOCAL_LOGV) { 2313 Log.v(TAG, "FINISHED DRAWING: " + mWindowAttributes.getTitle()); 2314 } 2315 if (mSurfaceHolder != null && mSurface.isValid()) { 2316 mSurfaceHolderCallback.surfaceRedrawNeeded(mSurfaceHolder); 2317 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 2318 if (callbacks != null) { 2319 for (SurfaceHolder.Callback c : callbacks) { 2320 if (c instanceof SurfaceHolder.Callback2) { 2321 ((SurfaceHolder.Callback2)c).surfaceRedrawNeeded( 2322 mSurfaceHolder); 2323 } 2324 } 2325 } 2326 } 2327 try { 2328 mWindowSession.finishDrawing(mWindow); 2329 } catch (RemoteException e) { 2330 } 2331 } 2332 } 2333 2334 private void draw(boolean fullRedrawNeeded) { 2335 Surface surface = mSurface; 2336 if (!surface.isValid()) { 2337 return; 2338 } 2339 2340 if (DEBUG_FPS) { 2341 trackFPS(); 2342 } 2343 2344 if (!sFirstDrawComplete) { 2345 synchronized (sFirstDrawHandlers) { 2346 sFirstDrawComplete = true; 2347 final int count = sFirstDrawHandlers.size(); 2348 for (int i = 0; i< count; i++) { 2349 mHandler.post(sFirstDrawHandlers.get(i)); 2350 } 2351 } 2352 } 2353 2354 scrollToRectOrFocus(null, false); 2355 2356 final AttachInfo attachInfo = mAttachInfo; 2357 if (attachInfo.mViewScrollChanged) { 2358 attachInfo.mViewScrollChanged = false; 2359 attachInfo.mTreeObserver.dispatchOnScrollChanged(); 2360 } 2361 2362 int yoff; 2363 boolean animating = mScroller != null && mScroller.computeScrollOffset(); 2364 if (animating) { 2365 yoff = mScroller.getCurrY(); 2366 } else { 2367 yoff = mScrollY; 2368 } 2369 if (mCurScrollY != yoff) { 2370 mCurScrollY = yoff; 2371 fullRedrawNeeded = true; 2372 } 2373 2374 final float appScale = attachInfo.mApplicationScale; 2375 final boolean scalingRequired = attachInfo.mScalingRequired; 2376 2377 int resizeAlpha = 0; 2378 if (mResizeBuffer != null) { 2379 long deltaTime = SystemClock.uptimeMillis() - mResizeBufferStartTime; 2380 if (deltaTime < mResizeBufferDuration) { 2381 float amt = deltaTime/(float) mResizeBufferDuration; 2382 amt = mResizeInterpolator.getInterpolation(amt); 2383 animating = true; 2384 resizeAlpha = 255 - (int)(amt*255); 2385 } else { 2386 disposeResizeBuffer(); 2387 } 2388 } 2389 2390 final Rect dirty = mDirty; 2391 if (mSurfaceHolder != null) { 2392 // The app owns the surface, we won't draw. 2393 dirty.setEmpty(); 2394 if (animating) { 2395 if (mScroller != null) { 2396 mScroller.abortAnimation(); 2397 } 2398 disposeResizeBuffer(); 2399 } 2400 return; 2401 } 2402 2403 if (fullRedrawNeeded) { 2404 attachInfo.mIgnoreDirtyState = true; 2405 dirty.set(0, 0, (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 2406 } 2407 2408 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2409 Log.v(TAG, "Draw " + mView + "/" 2410 + mWindowAttributes.getTitle() 2411 + ": dirty={" + dirty.left + "," + dirty.top 2412 + "," + dirty.right + "," + dirty.bottom + "} surface=" 2413 + surface + " surface.isValid()=" + surface.isValid() + ", appScale:" + 2414 appScale + ", width=" + mWidth + ", height=" + mHeight); 2415 } 2416 2417 attachInfo.mTreeObserver.dispatchOnDraw(); 2418 2419 if (!dirty.isEmpty() || mIsAnimating) { 2420 if (attachInfo.mHardwareRenderer != null && attachInfo.mHardwareRenderer.isEnabled()) { 2421 // Draw with hardware renderer. 2422 mIsAnimating = false; 2423 mHardwareYOffset = yoff; 2424 mResizeAlpha = resizeAlpha; 2425 2426 mCurrentDirty.set(dirty); 2427 dirty.setEmpty(); 2428 2429 mBlockResizeBuffer = false; 2430 attachInfo.mHardwareRenderer.draw(mView, attachInfo, this, 2431 animating ? null : mCurrentDirty); 2432 } else { 2433 // If we get here with a disabled & requested hardware renderer, something went 2434 // wrong (an invalidate posted right before we destroyed the hardware surface 2435 // for instance) so we should just bail out. Locking the surface with software 2436 // rendering at this point would lock it forever and prevent hardware renderer 2437 // from doing its job when it comes back. 2438 // Before we request a new frame we must however attempt to reinitiliaze the 2439 // hardware renderer if it's in requested state. This would happen after an 2440 // eglTerminate() for instance. 2441 if (attachInfo.mHardwareRenderer != null && 2442 !attachInfo.mHardwareRenderer.isEnabled() && 2443 attachInfo.mHardwareRenderer.isRequested()) { 2444 2445 try { 2446 attachInfo.mHardwareRenderer.initializeIfNeeded(mWidth, mHeight, 2447 mSurface); 2448 } catch (OutOfResourcesException e) { 2449 handleOutOfResourcesException(e); 2450 return; 2451 } 2452 2453 mFullRedrawNeeded = true; 2454 scheduleTraversals(); 2455 return; 2456 } 2457 2458 if (!drawSoftware(surface, attachInfo, yoff, scalingRequired, dirty)) { 2459 return; 2460 } 2461 } 2462 } 2463 2464 if (animating) { 2465 mFullRedrawNeeded = true; 2466 scheduleTraversals(); 2467 } 2468 } 2469 2470 /** 2471 * @return true if drawing was succesfull, false if an error occurred 2472 */ 2473 private boolean drawSoftware(Surface surface, AttachInfo attachInfo, int yoff, 2474 boolean scalingRequired, Rect dirty) { 2475 2476 // Draw with software renderer. 2477 Canvas canvas; 2478 try { 2479 int left = dirty.left; 2480 int top = dirty.top; 2481 int right = dirty.right; 2482 int bottom = dirty.bottom; 2483 2484 canvas = mSurface.lockCanvas(dirty); 2485 2486 // The dirty rectangle can be modified by Surface.lockCanvas() 2487 //noinspection ConstantConditions 2488 if (left != dirty.left || top != dirty.top || right != dirty.right || 2489 bottom != dirty.bottom) { 2490 attachInfo.mIgnoreDirtyState = true; 2491 } 2492 2493 // TODO: Do this in native 2494 canvas.setDensity(mDensity); 2495 } catch (Surface.OutOfResourcesException e) { 2496 handleOutOfResourcesException(e); 2497 return false; 2498 } catch (IllegalArgumentException e) { 2499 Log.e(TAG, "Could not lock surface", e); 2500 // Don't assume this is due to out of memory, it could be 2501 // something else, and if it is something else then we could 2502 // kill stuff (or ourself) for no reason. 2503 mLayoutRequested = true; // ask wm for a new surface next time. 2504 return false; 2505 } 2506 2507 try { 2508 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2509 Log.v(TAG, "Surface " + surface + " drawing to bitmap w=" 2510 + canvas.getWidth() + ", h=" + canvas.getHeight()); 2511 //canvas.drawARGB(255, 255, 0, 0); 2512 } 2513 2514 // If this bitmap's format includes an alpha channel, we 2515 // need to clear it before drawing so that the child will 2516 // properly re-composite its drawing on a transparent 2517 // background. This automatically respects the clip/dirty region 2518 // or 2519 // If we are applying an offset, we need to clear the area 2520 // where the offset doesn't appear to avoid having garbage 2521 // left in the blank areas. 2522 if (!canvas.isOpaque() || yoff != 0) { 2523 canvas.drawColor(0, PorterDuff.Mode.CLEAR); 2524 } 2525 2526 dirty.setEmpty(); 2527 mIsAnimating = false; 2528 attachInfo.mDrawingTime = SystemClock.uptimeMillis(); 2529 mView.mPrivateFlags |= View.PFLAG_DRAWN; 2530 2531 if (DEBUG_DRAW) { 2532 Context cxt = mView.getContext(); 2533 Log.i(TAG, "Drawing: package:" + cxt.getPackageName() + 2534 ", metrics=" + cxt.getResources().getDisplayMetrics() + 2535 ", compatibilityInfo=" + cxt.getResources().getCompatibilityInfo()); 2536 } 2537 try { 2538 canvas.translate(0, -yoff); 2539 if (mTranslator != null) { 2540 mTranslator.translateCanvas(canvas); 2541 } 2542 canvas.setScreenDensity(scalingRequired ? mNoncompatDensity : 0); 2543 attachInfo.mSetIgnoreDirtyState = false; 2544 2545 mView.draw(canvas); 2546 2547 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2548 } finally { 2549 if (!attachInfo.mSetIgnoreDirtyState) { 2550 // Only clear the flag if it was not set during the mView.draw() call 2551 attachInfo.mIgnoreDirtyState = false; 2552 } 2553 } 2554 } finally { 2555 try { 2556 surface.unlockCanvasAndPost(canvas); 2557 } catch (IllegalArgumentException e) { 2558 Log.e(TAG, "Could not unlock surface", e); 2559 mLayoutRequested = true; // ask wm for a new surface next time. 2560 //noinspection ReturnInsideFinallyBlock 2561 return false; 2562 } 2563 2564 if (LOCAL_LOGV) { 2565 Log.v(TAG, "Surface " + surface + " unlockCanvasAndPost"); 2566 } 2567 } 2568 return true; 2569 } 2570 2571 /** 2572 * We want to draw a highlight around the current accessibility focused. 2573 * Since adding a style for all possible view is not a viable option we 2574 * have this specialized drawing method. 2575 * 2576 * Note: We are doing this here to be able to draw the highlight for 2577 * virtual views in addition to real ones. 2578 * 2579 * @param canvas The canvas on which to draw. 2580 */ 2581 private void drawAccessibilityFocusedDrawableIfNeeded(Canvas canvas) { 2582 final AccessibilityManager manager = AccessibilityManager.getInstance(mView.mContext); 2583 if (!manager.isEnabled() || !manager.isTouchExplorationEnabled()) { 2584 return; 2585 } 2586 2587 final View host = mAccessibilityFocusedHost; 2588 if (host == null || host.mAttachInfo == null) { 2589 return; 2590 } 2591 2592 final Drawable drawable = getAccessibilityFocusedDrawable(); 2593 if (drawable == null) { 2594 return; 2595 } 2596 2597 final AccessibilityNodeProvider provider = host.getAccessibilityNodeProvider(); 2598 final Rect bounds = mView.mAttachInfo.mTmpInvalRect; 2599 if (provider == null) { 2600 host.getBoundsOnScreen(bounds); 2601 } else if (mAccessibilityFocusedVirtualView != null) { 2602 mAccessibilityFocusedVirtualView.getBoundsInScreen(bounds); 2603 } else { 2604 return; 2605 } 2606 2607 bounds.offset(-mAttachInfo.mWindowLeft, -mAttachInfo.mWindowTop); 2608 bounds.intersect(0, 0, mAttachInfo.mViewRootImpl.mWidth, mAttachInfo.mViewRootImpl.mHeight); 2609 drawable.setBounds(bounds); 2610 drawable.draw(canvas); 2611 } 2612 2613 private Drawable getAccessibilityFocusedDrawable() { 2614 if (mAttachInfo != null) { 2615 // Lazily load the accessibility focus drawable. 2616 if (mAttachInfo.mAccessibilityFocusDrawable == null) { 2617 TypedValue value = new TypedValue(); 2618 final boolean resolved = mView.mContext.getTheme().resolveAttribute( 2619 R.attr.accessibilityFocusedDrawable, value, true); 2620 if (resolved) { 2621 mAttachInfo.mAccessibilityFocusDrawable = 2622 mView.mContext.getDrawable(value.resourceId); 2623 } 2624 } 2625 return mAttachInfo.mAccessibilityFocusDrawable; 2626 } 2627 return null; 2628 } 2629 2630 /** 2631 * @hide 2632 */ 2633 public void setDrawDuringWindowsAnimating(boolean value) { 2634 mDrawDuringWindowsAnimating = value; 2635 if (value) { 2636 handleDispatchDoneAnimating(); 2637 } 2638 } 2639 2640 boolean scrollToRectOrFocus(Rect rectangle, boolean immediate) { 2641 final View.AttachInfo attachInfo = mAttachInfo; 2642 final Rect ci = attachInfo.mContentInsets; 2643 final Rect vi = attachInfo.mVisibleInsets; 2644 int scrollY = 0; 2645 boolean handled = false; 2646 2647 if (vi.left > ci.left || vi.top > ci.top 2648 || vi.right > ci.right || vi.bottom > ci.bottom) { 2649 // We'll assume that we aren't going to change the scroll 2650 // offset, since we want to avoid that unless it is actually 2651 // going to make the focus visible... otherwise we scroll 2652 // all over the place. 2653 scrollY = mScrollY; 2654 // We can be called for two different situations: during a draw, 2655 // to update the scroll position if the focus has changed (in which 2656 // case 'rectangle' is null), or in response to a 2657 // requestChildRectangleOnScreen() call (in which case 'rectangle' 2658 // is non-null and we just want to scroll to whatever that 2659 // rectangle is). 2660 final View focus = mView.findFocus(); 2661 if (focus == null) { 2662 return false; 2663 } 2664 View lastScrolledFocus = (mLastScrolledFocus != null) ? mLastScrolledFocus.get() : null; 2665 if (focus != lastScrolledFocus) { 2666 // If the focus has changed, then ignore any requests to scroll 2667 // to a rectangle; first we want to make sure the entire focus 2668 // view is visible. 2669 rectangle = null; 2670 } 2671 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Eval scroll: focus=" + focus 2672 + " rectangle=" + rectangle + " ci=" + ci 2673 + " vi=" + vi); 2674 if (focus == lastScrolledFocus && !mScrollMayChange && rectangle == null) { 2675 // Optimization: if the focus hasn't changed since last 2676 // time, and no layout has happened, then just leave things 2677 // as they are. 2678 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Keeping scroll y=" 2679 + mScrollY + " vi=" + vi.toShortString()); 2680 } else { 2681 // We need to determine if the currently focused view is 2682 // within the visible part of the window and, if not, apply 2683 // a pan so it can be seen. 2684 mLastScrolledFocus = new WeakReference<View>(focus); 2685 mScrollMayChange = false; 2686 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Need to scroll?"); 2687 // Try to find the rectangle from the focus view. 2688 if (focus.getGlobalVisibleRect(mVisRect, null)) { 2689 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Root w=" 2690 + mView.getWidth() + " h=" + mView.getHeight() 2691 + " ci=" + ci.toShortString() 2692 + " vi=" + vi.toShortString()); 2693 if (rectangle == null) { 2694 focus.getFocusedRect(mTempRect); 2695 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Focus " + focus 2696 + ": focusRect=" + mTempRect.toShortString()); 2697 if (mView instanceof ViewGroup) { 2698 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 2699 focus, mTempRect); 2700 } 2701 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2702 "Focus in window: focusRect=" 2703 + mTempRect.toShortString() 2704 + " visRect=" + mVisRect.toShortString()); 2705 } else { 2706 mTempRect.set(rectangle); 2707 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2708 "Request scroll to rect: " 2709 + mTempRect.toShortString() 2710 + " visRect=" + mVisRect.toShortString()); 2711 } 2712 if (mTempRect.intersect(mVisRect)) { 2713 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2714 "Focus window visible rect: " 2715 + mTempRect.toShortString()); 2716 if (mTempRect.height() > 2717 (mView.getHeight()-vi.top-vi.bottom)) { 2718 // If the focus simply is not going to fit, then 2719 // best is probably just to leave things as-is. 2720 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2721 "Too tall; leaving scrollY=" + scrollY); 2722 } else if ((mTempRect.top-scrollY) < vi.top) { 2723 scrollY -= vi.top - (mTempRect.top-scrollY); 2724 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2725 "Top covered; scrollY=" + scrollY); 2726 } else if ((mTempRect.bottom-scrollY) 2727 > (mView.getHeight()-vi.bottom)) { 2728 scrollY += (mTempRect.bottom-scrollY) 2729 - (mView.getHeight()-vi.bottom); 2730 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2731 "Bottom covered; scrollY=" + scrollY); 2732 } 2733 handled = true; 2734 } 2735 } 2736 } 2737 } 2738 2739 if (scrollY != mScrollY) { 2740 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Pan scroll changed: old=" 2741 + mScrollY + " , new=" + scrollY); 2742 if (!immediate && mResizeBuffer == null) { 2743 if (mScroller == null) { 2744 mScroller = new Scroller(mView.getContext()); 2745 } 2746 mScroller.startScroll(0, mScrollY, 0, scrollY-mScrollY); 2747 } else if (mScroller != null) { 2748 mScroller.abortAnimation(); 2749 } 2750 mScrollY = scrollY; 2751 } 2752 2753 return handled; 2754 } 2755 2756 /** 2757 * @hide 2758 */ 2759 public View getAccessibilityFocusedHost() { 2760 return mAccessibilityFocusedHost; 2761 } 2762 2763 /** 2764 * @hide 2765 */ 2766 public AccessibilityNodeInfo getAccessibilityFocusedVirtualView() { 2767 return mAccessibilityFocusedVirtualView; 2768 } 2769 2770 void setAccessibilityFocus(View view, AccessibilityNodeInfo node) { 2771 // If we have a virtual view with accessibility focus we need 2772 // to clear the focus and invalidate the virtual view bounds. 2773 if (mAccessibilityFocusedVirtualView != null) { 2774 2775 AccessibilityNodeInfo focusNode = mAccessibilityFocusedVirtualView; 2776 View focusHost = mAccessibilityFocusedHost; 2777 2778 // Wipe the state of the current accessibility focus since 2779 // the call into the provider to clear accessibility focus 2780 // will fire an accessibility event which will end up calling 2781 // this method and we want to have clean state when this 2782 // invocation happens. 2783 mAccessibilityFocusedHost = null; 2784 mAccessibilityFocusedVirtualView = null; 2785 2786 // Clear accessibility focus on the host after clearing state since 2787 // this method may be reentrant. 2788 focusHost.clearAccessibilityFocusNoCallbacks(); 2789 2790 AccessibilityNodeProvider provider = focusHost.getAccessibilityNodeProvider(); 2791 if (provider != null) { 2792 // Invalidate the area of the cleared accessibility focus. 2793 focusNode.getBoundsInParent(mTempRect); 2794 focusHost.invalidate(mTempRect); 2795 // Clear accessibility focus in the virtual node. 2796 final int virtualNodeId = AccessibilityNodeInfo.getVirtualDescendantId( 2797 focusNode.getSourceNodeId()); 2798 provider.performAction(virtualNodeId, 2799 AccessibilityNodeInfo.ACTION_CLEAR_ACCESSIBILITY_FOCUS, null); 2800 } 2801 focusNode.recycle(); 2802 } 2803 if (mAccessibilityFocusedHost != null) { 2804 // Clear accessibility focus in the view. 2805 mAccessibilityFocusedHost.clearAccessibilityFocusNoCallbacks(); 2806 } 2807 2808 // Set the new focus host and node. 2809 mAccessibilityFocusedHost = view; 2810 mAccessibilityFocusedVirtualView = node; 2811 } 2812 2813 @Override 2814 public void requestChildFocus(View child, View focused) { 2815 if (DEBUG_INPUT_RESIZE) { 2816 Log.v(TAG, "Request child focus: focus now " + focused); 2817 } 2818 checkThread(); 2819 scheduleTraversals(); 2820 } 2821 2822 @Override 2823 public void clearChildFocus(View child) { 2824 if (DEBUG_INPUT_RESIZE) { 2825 Log.v(TAG, "Clearing child focus"); 2826 } 2827 checkThread(); 2828 scheduleTraversals(); 2829 } 2830 2831 @Override 2832 public ViewParent getParentForAccessibility() { 2833 return null; 2834 } 2835 2836 @Override 2837 public void focusableViewAvailable(View v) { 2838 checkThread(); 2839 if (mView != null) { 2840 if (!mView.hasFocus()) { 2841 v.requestFocus(); 2842 } else { 2843 // the one case where will transfer focus away from the current one 2844 // is if the current view is a view group that prefers to give focus 2845 // to its children first AND the view is a descendant of it. 2846 View focused = mView.findFocus(); 2847 if (focused instanceof ViewGroup) { 2848 ViewGroup group = (ViewGroup) focused; 2849 if (group.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 2850 && isViewDescendantOf(v, focused)) { 2851 v.requestFocus(); 2852 } 2853 } 2854 } 2855 } 2856 } 2857 2858 @Override 2859 public void recomputeViewAttributes(View child) { 2860 checkThread(); 2861 if (mView == child) { 2862 mAttachInfo.mRecomputeGlobalAttributes = true; 2863 if (!mWillDrawSoon) { 2864 scheduleTraversals(); 2865 } 2866 } 2867 } 2868 2869 void dispatchDetachedFromWindow() { 2870 if (mView != null && mView.mAttachInfo != null) { 2871 mAttachInfo.mTreeObserver.dispatchOnWindowAttachedChange(false); 2872 mView.dispatchDetachedFromWindow(); 2873 } 2874 2875 mAccessibilityInteractionConnectionManager.ensureNoConnection(); 2876 mAccessibilityManager.removeAccessibilityStateChangeListener( 2877 mAccessibilityInteractionConnectionManager); 2878 removeSendWindowContentChangedCallback(); 2879 2880 destroyHardwareRenderer(); 2881 2882 setAccessibilityFocus(null, null); 2883 2884 mView.assignParent(null); 2885 mView = null; 2886 mAttachInfo.mRootView = null; 2887 2888 mSurface.release(); 2889 2890 if (mInputQueueCallback != null && mInputQueue != null) { 2891 mInputQueueCallback.onInputQueueDestroyed(mInputQueue); 2892 mInputQueue.dispose(); 2893 mInputQueueCallback = null; 2894 mInputQueue = null; 2895 } 2896 if (mInputEventReceiver != null) { 2897 mInputEventReceiver.dispose(); 2898 mInputEventReceiver = null; 2899 } 2900 try { 2901 mWindowSession.remove(mWindow); 2902 } catch (RemoteException e) { 2903 } 2904 2905 // Dispose the input channel after removing the window so the Window Manager 2906 // doesn't interpret the input channel being closed as an abnormal termination. 2907 if (mInputChannel != null) { 2908 mInputChannel.dispose(); 2909 mInputChannel = null; 2910 } 2911 2912 mDisplayManager.unregisterDisplayListener(mDisplayListener); 2913 2914 unscheduleTraversals(); 2915 } 2916 2917 void updateConfiguration(Configuration config, boolean force) { 2918 if (DEBUG_CONFIGURATION) Log.v(TAG, 2919 "Applying new config to window " 2920 + mWindowAttributes.getTitle() 2921 + ": " + config); 2922 2923 CompatibilityInfo ci = mDisplayAdjustments.getCompatibilityInfo(); 2924 if (!ci.equals(CompatibilityInfo.DEFAULT_COMPATIBILITY_INFO)) { 2925 config = new Configuration(config); 2926 ci.applyToConfiguration(mNoncompatDensity, config); 2927 } 2928 2929 synchronized (sConfigCallbacks) { 2930 for (int i=sConfigCallbacks.size()-1; i>=0; i--) { 2931 sConfigCallbacks.get(i).onConfigurationChanged(config); 2932 } 2933 } 2934 if (mView != null) { 2935 // At this point the resources have been updated to 2936 // have the most recent config, whatever that is. Use 2937 // the one in them which may be newer. 2938 config = mView.getResources().getConfiguration(); 2939 if (force || mLastConfiguration.diff(config) != 0) { 2940 final int lastLayoutDirection = mLastConfiguration.getLayoutDirection(); 2941 final int currentLayoutDirection = config.getLayoutDirection(); 2942 mLastConfiguration.setTo(config); 2943 if (lastLayoutDirection != currentLayoutDirection && 2944 mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 2945 mView.setLayoutDirection(currentLayoutDirection); 2946 } 2947 mView.dispatchConfigurationChanged(config); 2948 } 2949 } 2950 } 2951 2952 /** 2953 * Return true if child is an ancestor of parent, (or equal to the parent). 2954 */ 2955 public static boolean isViewDescendantOf(View child, View parent) { 2956 if (child == parent) { 2957 return true; 2958 } 2959 2960 final ViewParent theParent = child.getParent(); 2961 return (theParent instanceof ViewGroup) && isViewDescendantOf((View) theParent, parent); 2962 } 2963 2964 private static void forceLayout(View view) { 2965 view.forceLayout(); 2966 if (view instanceof ViewGroup) { 2967 ViewGroup group = (ViewGroup) view; 2968 final int count = group.getChildCount(); 2969 for (int i = 0; i < count; i++) { 2970 forceLayout(group.getChildAt(i)); 2971 } 2972 } 2973 } 2974 2975 private final static int MSG_INVALIDATE = 1; 2976 private final static int MSG_INVALIDATE_RECT = 2; 2977 private final static int MSG_DIE = 3; 2978 private final static int MSG_RESIZED = 4; 2979 private final static int MSG_RESIZED_REPORT = 5; 2980 private final static int MSG_WINDOW_FOCUS_CHANGED = 6; 2981 private final static int MSG_DISPATCH_INPUT_EVENT = 7; 2982 private final static int MSG_DISPATCH_APP_VISIBILITY = 8; 2983 private final static int MSG_DISPATCH_GET_NEW_SURFACE = 9; 2984 private final static int MSG_DISPATCH_KEY_FROM_IME = 11; 2985 private final static int MSG_FINISH_INPUT_CONNECTION = 12; 2986 private final static int MSG_CHECK_FOCUS = 13; 2987 private final static int MSG_CLOSE_SYSTEM_DIALOGS = 14; 2988 private final static int MSG_DISPATCH_DRAG_EVENT = 15; 2989 private final static int MSG_DISPATCH_DRAG_LOCATION_EVENT = 16; 2990 private final static int MSG_DISPATCH_SYSTEM_UI_VISIBILITY = 17; 2991 private final static int MSG_UPDATE_CONFIGURATION = 18; 2992 private final static int MSG_PROCESS_INPUT_EVENTS = 19; 2993 private final static int MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST = 21; 2994 private final static int MSG_DISPATCH_DONE_ANIMATING = 22; 2995 private final static int MSG_INVALIDATE_WORLD = 23; 2996 private final static int MSG_WINDOW_MOVED = 24; 2997 private final static int MSG_FLUSH_LAYER_UPDATES = 25; 2998 private final static int MSG_SYNTHESIZE_INPUT_EVENT = 26; 2999 3000 final class ViewRootHandler extends Handler { 3001 @Override 3002 public String getMessageName(Message message) { 3003 switch (message.what) { 3004 case MSG_INVALIDATE: 3005 return "MSG_INVALIDATE"; 3006 case MSG_INVALIDATE_RECT: 3007 return "MSG_INVALIDATE_RECT"; 3008 case MSG_DIE: 3009 return "MSG_DIE"; 3010 case MSG_RESIZED: 3011 return "MSG_RESIZED"; 3012 case MSG_RESIZED_REPORT: 3013 return "MSG_RESIZED_REPORT"; 3014 case MSG_WINDOW_FOCUS_CHANGED: 3015 return "MSG_WINDOW_FOCUS_CHANGED"; 3016 case MSG_DISPATCH_INPUT_EVENT: 3017 return "MSG_DISPATCH_INPUT_EVENT"; 3018 case MSG_DISPATCH_APP_VISIBILITY: 3019 return "MSG_DISPATCH_APP_VISIBILITY"; 3020 case MSG_DISPATCH_GET_NEW_SURFACE: 3021 return "MSG_DISPATCH_GET_NEW_SURFACE"; 3022 case MSG_DISPATCH_KEY_FROM_IME: 3023 return "MSG_DISPATCH_KEY_FROM_IME"; 3024 case MSG_FINISH_INPUT_CONNECTION: 3025 return "MSG_FINISH_INPUT_CONNECTION"; 3026 case MSG_CHECK_FOCUS: 3027 return "MSG_CHECK_FOCUS"; 3028 case MSG_CLOSE_SYSTEM_DIALOGS: 3029 return "MSG_CLOSE_SYSTEM_DIALOGS"; 3030 case MSG_DISPATCH_DRAG_EVENT: 3031 return "MSG_DISPATCH_DRAG_EVENT"; 3032 case MSG_DISPATCH_DRAG_LOCATION_EVENT: 3033 return "MSG_DISPATCH_DRAG_LOCATION_EVENT"; 3034 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: 3035 return "MSG_DISPATCH_SYSTEM_UI_VISIBILITY"; 3036 case MSG_UPDATE_CONFIGURATION: 3037 return "MSG_UPDATE_CONFIGURATION"; 3038 case MSG_PROCESS_INPUT_EVENTS: 3039 return "MSG_PROCESS_INPUT_EVENTS"; 3040 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: 3041 return "MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST"; 3042 case MSG_DISPATCH_DONE_ANIMATING: 3043 return "MSG_DISPATCH_DONE_ANIMATING"; 3044 case MSG_WINDOW_MOVED: 3045 return "MSG_WINDOW_MOVED"; 3046 case MSG_FLUSH_LAYER_UPDATES: 3047 return "MSG_FLUSH_LAYER_UPDATES"; 3048 case MSG_SYNTHESIZE_INPUT_EVENT: 3049 return "MSG_SYNTHESIZE_INPUT_EVENT"; 3050 } 3051 return super.getMessageName(message); 3052 } 3053 3054 @Override 3055 public void handleMessage(Message msg) { 3056 switch (msg.what) { 3057 case MSG_INVALIDATE: 3058 ((View) msg.obj).invalidate(); 3059 break; 3060 case MSG_INVALIDATE_RECT: 3061 final View.AttachInfo.InvalidateInfo info = (View.AttachInfo.InvalidateInfo) msg.obj; 3062 info.target.invalidate(info.left, info.top, info.right, info.bottom); 3063 info.recycle(); 3064 break; 3065 case MSG_PROCESS_INPUT_EVENTS: 3066 mProcessInputEventsScheduled = false; 3067 doProcessInputEvents(); 3068 break; 3069 case MSG_DISPATCH_APP_VISIBILITY: 3070 handleAppVisibility(msg.arg1 != 0); 3071 break; 3072 case MSG_DISPATCH_GET_NEW_SURFACE: 3073 handleGetNewSurface(); 3074 break; 3075 case MSG_RESIZED: { 3076 // Recycled in the fall through... 3077 SomeArgs args = (SomeArgs) msg.obj; 3078 if (mWinFrame.equals(args.arg1) 3079 && mPendingOverscanInsets.equals(args.arg5) 3080 && mPendingContentInsets.equals(args.arg2) 3081 && mPendingVisibleInsets.equals(args.arg3) 3082 && args.arg4 == null) { 3083 break; 3084 } 3085 } // fall through... 3086 case MSG_RESIZED_REPORT: 3087 if (mAdded) { 3088 SomeArgs args = (SomeArgs) msg.obj; 3089 3090 Configuration config = (Configuration) args.arg4; 3091 if (config != null) { 3092 updateConfiguration(config, false); 3093 } 3094 3095 mWinFrame.set((Rect) args.arg1); 3096 mPendingOverscanInsets.set((Rect) args.arg5); 3097 mPendingContentInsets.set((Rect) args.arg2); 3098 mPendingVisibleInsets.set((Rect) args.arg3); 3099 3100 args.recycle(); 3101 3102 if (msg.what == MSG_RESIZED_REPORT) { 3103 mReportNextDraw = true; 3104 } 3105 3106 if (mView != null) { 3107 forceLayout(mView); 3108 } 3109 3110 requestLayout(); 3111 } 3112 break; 3113 case MSG_WINDOW_MOVED: 3114 if (mAdded) { 3115 final int w = mWinFrame.width(); 3116 final int h = mWinFrame.height(); 3117 final int l = msg.arg1; 3118 final int t = msg.arg2; 3119 mWinFrame.left = l; 3120 mWinFrame.right = l + w; 3121 mWinFrame.top = t; 3122 mWinFrame.bottom = t + h; 3123 3124 if (mView != null) { 3125 forceLayout(mView); 3126 } 3127 requestLayout(); 3128 } 3129 break; 3130 case MSG_WINDOW_FOCUS_CHANGED: { 3131 if (mAdded) { 3132 boolean hasWindowFocus = msg.arg1 != 0; 3133 mAttachInfo.mHasWindowFocus = hasWindowFocus; 3134 3135 profileRendering(hasWindowFocus); 3136 3137 if (hasWindowFocus) { 3138 boolean inTouchMode = msg.arg2 != 0; 3139 ensureTouchModeLocally(inTouchMode); 3140 3141 if (mAttachInfo.mHardwareRenderer != null && mSurface.isValid()){ 3142 mFullRedrawNeeded = true; 3143 try { 3144 mAttachInfo.mHardwareRenderer.initializeIfNeeded( 3145 mWidth, mHeight, mSurface); 3146 } catch (OutOfResourcesException e) { 3147 Log.e(TAG, "OutOfResourcesException locking surface", e); 3148 try { 3149 if (!mWindowSession.outOfMemory(mWindow)) { 3150 Slog.w(TAG, "No processes killed for memory; killing self"); 3151 Process.killProcess(Process.myPid()); 3152 } 3153 } catch (RemoteException ex) { 3154 } 3155 // Retry in a bit. 3156 sendMessageDelayed(obtainMessage(msg.what, msg.arg1, msg.arg2), 500); 3157 return; 3158 } 3159 } 3160 } 3161 3162 mLastWasImTarget = WindowManager.LayoutParams 3163 .mayUseInputMethod(mWindowAttributes.flags); 3164 3165 InputMethodManager imm = InputMethodManager.peekInstance(); 3166 if (mView != null) { 3167 if (hasWindowFocus && imm != null && mLastWasImTarget && 3168 !isInLocalFocusMode()) { 3169 imm.startGettingWindowFocus(mView); 3170 } 3171 mAttachInfo.mKeyDispatchState.reset(); 3172 mView.dispatchWindowFocusChanged(hasWindowFocus); 3173 mAttachInfo.mTreeObserver.dispatchOnWindowFocusChange(hasWindowFocus); 3174 } 3175 3176 // Note: must be done after the focus change callbacks, 3177 // so all of the view state is set up correctly. 3178 if (hasWindowFocus) { 3179 if (imm != null && mLastWasImTarget && !isInLocalFocusMode()) { 3180 imm.onWindowFocus(mView, mView.findFocus(), 3181 mWindowAttributes.softInputMode, 3182 !mHasHadWindowFocus, mWindowAttributes.flags); 3183 } 3184 // Clear the forward bit. We can just do this directly, since 3185 // the window manager doesn't care about it. 3186 mWindowAttributes.softInputMode &= 3187 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3188 ((WindowManager.LayoutParams)mView.getLayoutParams()) 3189 .softInputMode &= 3190 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3191 mHasHadWindowFocus = true; 3192 } 3193 3194 if (mView != null && mAccessibilityManager.isEnabled()) { 3195 if (hasWindowFocus) { 3196 mView.sendAccessibilityEvent( 3197 AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 3198 } 3199 } 3200 } 3201 } break; 3202 case MSG_DIE: 3203 doDie(); 3204 break; 3205 case MSG_DISPATCH_INPUT_EVENT: { 3206 SomeArgs args = (SomeArgs)msg.obj; 3207 InputEvent event = (InputEvent)args.arg1; 3208 InputEventReceiver receiver = (InputEventReceiver)args.arg2; 3209 enqueueInputEvent(event, receiver, 0, true); 3210 args.recycle(); 3211 } break; 3212 case MSG_SYNTHESIZE_INPUT_EVENT: { 3213 InputEvent event = (InputEvent)msg.obj; 3214 enqueueInputEvent(event, null, QueuedInputEvent.FLAG_UNHANDLED, true); 3215 } break; 3216 case MSG_DISPATCH_KEY_FROM_IME: { 3217 if (LOCAL_LOGV) Log.v( 3218 TAG, "Dispatching key " 3219 + msg.obj + " from IME to " + mView); 3220 KeyEvent event = (KeyEvent)msg.obj; 3221 if ((event.getFlags()&KeyEvent.FLAG_FROM_SYSTEM) != 0) { 3222 // The IME is trying to say this event is from the 3223 // system! Bad bad bad! 3224 //noinspection UnusedAssignment 3225 event = KeyEvent.changeFlags(event, event.getFlags() & 3226 ~KeyEvent.FLAG_FROM_SYSTEM); 3227 } 3228 enqueueInputEvent(event, null, QueuedInputEvent.FLAG_DELIVER_POST_IME, true); 3229 } break; 3230 case MSG_FINISH_INPUT_CONNECTION: { 3231 InputMethodManager imm = InputMethodManager.peekInstance(); 3232 if (imm != null) { 3233 imm.reportFinishInputConnection((InputConnection)msg.obj); 3234 } 3235 } break; 3236 case MSG_CHECK_FOCUS: { 3237 InputMethodManager imm = InputMethodManager.peekInstance(); 3238 if (imm != null) { 3239 imm.checkFocus(); 3240 } 3241 } break; 3242 case MSG_CLOSE_SYSTEM_DIALOGS: { 3243 if (mView != null) { 3244 mView.onCloseSystemDialogs((String)msg.obj); 3245 } 3246 } break; 3247 case MSG_DISPATCH_DRAG_EVENT: 3248 case MSG_DISPATCH_DRAG_LOCATION_EVENT: { 3249 DragEvent event = (DragEvent)msg.obj; 3250 event.mLocalState = mLocalDragState; // only present when this app called startDrag() 3251 handleDragEvent(event); 3252 } break; 3253 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: { 3254 handleDispatchSystemUiVisibilityChanged((SystemUiVisibilityInfo) msg.obj); 3255 } break; 3256 case MSG_UPDATE_CONFIGURATION: { 3257 Configuration config = (Configuration)msg.obj; 3258 if (config.isOtherSeqNewer(mLastConfiguration)) { 3259 config = mLastConfiguration; 3260 } 3261 updateConfiguration(config, false); 3262 } break; 3263 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: { 3264 setAccessibilityFocus(null, null); 3265 } break; 3266 case MSG_DISPATCH_DONE_ANIMATING: { 3267 handleDispatchDoneAnimating(); 3268 } break; 3269 case MSG_INVALIDATE_WORLD: { 3270 if (mView != null) { 3271 invalidateWorld(mView); 3272 } 3273 } break; 3274 case MSG_FLUSH_LAYER_UPDATES: { 3275 flushHardwareLayerUpdates(); 3276 } break; 3277 } 3278 } 3279 } 3280 3281 final ViewRootHandler mHandler = new ViewRootHandler(); 3282 3283 /** 3284 * Something in the current window tells us we need to change the touch mode. For 3285 * example, we are not in touch mode, and the user touches the screen. 3286 * 3287 * If the touch mode has changed, tell the window manager, and handle it locally. 3288 * 3289 * @param inTouchMode Whether we want to be in touch mode. 3290 * @return True if the touch mode changed and focus changed was changed as a result 3291 */ 3292 boolean ensureTouchMode(boolean inTouchMode) { 3293 if (DBG) Log.d("touchmode", "ensureTouchMode(" + inTouchMode + "), current " 3294 + "touch mode is " + mAttachInfo.mInTouchMode); 3295 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3296 3297 // tell the window manager 3298 try { 3299 if (!isInLocalFocusMode()) { 3300 mWindowSession.setInTouchMode(inTouchMode); 3301 } 3302 } catch (RemoteException e) { 3303 throw new RuntimeException(e); 3304 } 3305 3306 // handle the change 3307 return ensureTouchModeLocally(inTouchMode); 3308 } 3309 3310 /** 3311 * Ensure that the touch mode for this window is set, and if it is changing, 3312 * take the appropriate action. 3313 * @param inTouchMode Whether we want to be in touch mode. 3314 * @return True if the touch mode changed and focus changed was changed as a result 3315 */ 3316 private boolean ensureTouchModeLocally(boolean inTouchMode) { 3317 if (DBG) Log.d("touchmode", "ensureTouchModeLocally(" + inTouchMode + "), current " 3318 + "touch mode is " + mAttachInfo.mInTouchMode); 3319 3320 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3321 3322 mAttachInfo.mInTouchMode = inTouchMode; 3323 mAttachInfo.mTreeObserver.dispatchOnTouchModeChanged(inTouchMode); 3324 3325 return (inTouchMode) ? enterTouchMode() : leaveTouchMode(); 3326 } 3327 3328 private boolean enterTouchMode() { 3329 if (mView != null && mView.hasFocus()) { 3330 // note: not relying on mFocusedView here because this could 3331 // be when the window is first being added, and mFocused isn't 3332 // set yet. 3333 final View focused = mView.findFocus(); 3334 if (focused != null && !focused.isFocusableInTouchMode()) { 3335 final ViewGroup ancestorToTakeFocus = findAncestorToTakeFocusInTouchMode(focused); 3336 if (ancestorToTakeFocus != null) { 3337 // there is an ancestor that wants focus after its 3338 // descendants that is focusable in touch mode.. give it 3339 // focus 3340 return ancestorToTakeFocus.requestFocus(); 3341 } else { 3342 // There's nothing to focus. Clear and propagate through the 3343 // hierarchy, but don't attempt to place new focus. 3344 focused.clearFocusInternal(null, true, false); 3345 return true; 3346 } 3347 } 3348 } 3349 return false; 3350 } 3351 3352 /** 3353 * Find an ancestor of focused that wants focus after its descendants and is 3354 * focusable in touch mode. 3355 * @param focused The currently focused view. 3356 * @return An appropriate view, or null if no such view exists. 3357 */ 3358 private static ViewGroup findAncestorToTakeFocusInTouchMode(View focused) { 3359 ViewParent parent = focused.getParent(); 3360 while (parent instanceof ViewGroup) { 3361 final ViewGroup vgParent = (ViewGroup) parent; 3362 if (vgParent.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 3363 && vgParent.isFocusableInTouchMode()) { 3364 return vgParent; 3365 } 3366 if (vgParent.isRootNamespace()) { 3367 return null; 3368 } else { 3369 parent = vgParent.getParent(); 3370 } 3371 } 3372 return null; 3373 } 3374 3375 private boolean leaveTouchMode() { 3376 if (mView != null) { 3377 if (mView.hasFocus()) { 3378 View focusedView = mView.findFocus(); 3379 if (!(focusedView instanceof ViewGroup)) { 3380 // some view has focus, let it keep it 3381 return false; 3382 } else if (((ViewGroup) focusedView).getDescendantFocusability() != 3383 ViewGroup.FOCUS_AFTER_DESCENDANTS) { 3384 // some view group has focus, and doesn't prefer its children 3385 // over itself for focus, so let them keep it. 3386 return false; 3387 } 3388 } 3389 3390 // find the best view to give focus to in this brave new non-touch-mode 3391 // world 3392 final View focused = focusSearch(null, View.FOCUS_DOWN); 3393 if (focused != null) { 3394 return focused.requestFocus(View.FOCUS_DOWN); 3395 } 3396 } 3397 return false; 3398 } 3399 3400 /** 3401 * Base class for implementing a stage in the chain of responsibility 3402 * for processing input events. 3403 * <p> 3404 * Events are delivered to the stage by the {@link #deliver} method. The stage 3405 * then has the choice of finishing the event or forwarding it to the next stage. 3406 * </p> 3407 */ 3408 abstract class InputStage { 3409 private final InputStage mNext; 3410 3411 protected static final int FORWARD = 0; 3412 protected static final int FINISH_HANDLED = 1; 3413 protected static final int FINISH_NOT_HANDLED = 2; 3414 3415 /** 3416 * Creates an input stage. 3417 * @param next The next stage to which events should be forwarded. 3418 */ 3419 public InputStage(InputStage next) { 3420 mNext = next; 3421 } 3422 3423 /** 3424 * Delivers an event to be processed. 3425 */ 3426 public final void deliver(QueuedInputEvent q) { 3427 if ((q.mFlags & QueuedInputEvent.FLAG_FINISHED) != 0) { 3428 forward(q); 3429 } else if (shouldDropInputEvent(q)) { 3430 finish(q, false); 3431 } else { 3432 apply(q, onProcess(q)); 3433 } 3434 } 3435 3436 /** 3437 * Marks the the input event as finished then forwards it to the next stage. 3438 */ 3439 protected void finish(QueuedInputEvent q, boolean handled) { 3440 q.mFlags |= QueuedInputEvent.FLAG_FINISHED; 3441 if (handled) { 3442 q.mFlags |= QueuedInputEvent.FLAG_FINISHED_HANDLED; 3443 } 3444 forward(q); 3445 } 3446 3447 /** 3448 * Forwards the event to the next stage. 3449 */ 3450 protected void forward(QueuedInputEvent q) { 3451 onDeliverToNext(q); 3452 } 3453 3454 /** 3455 * Applies a result code from {@link #onProcess} to the specified event. 3456 */ 3457 protected void apply(QueuedInputEvent q, int result) { 3458 if (result == FORWARD) { 3459 forward(q); 3460 } else if (result == FINISH_HANDLED) { 3461 finish(q, true); 3462 } else if (result == FINISH_NOT_HANDLED) { 3463 finish(q, false); 3464 } else { 3465 throw new IllegalArgumentException("Invalid result: " + result); 3466 } 3467 } 3468 3469 /** 3470 * Called when an event is ready to be processed. 3471 * @return A result code indicating how the event was handled. 3472 */ 3473 protected int onProcess(QueuedInputEvent q) { 3474 return FORWARD; 3475 } 3476 3477 /** 3478 * Called when an event is being delivered to the next stage. 3479 */ 3480 protected void onDeliverToNext(QueuedInputEvent q) { 3481 if (mNext != null) { 3482 mNext.deliver(q); 3483 } else { 3484 finishInputEvent(q); 3485 } 3486 } 3487 3488 protected boolean shouldDropInputEvent(QueuedInputEvent q) { 3489 if (mView == null || !mAdded) { 3490 Slog.w(TAG, "Dropping event due to root view being removed: " + q.mEvent); 3491 return true; 3492 } else if (!mAttachInfo.mHasWindowFocus && 3493 !q.mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER) && 3494 !isTerminalInputEvent(q.mEvent)) { 3495 // If this is a focused event and the window doesn't currently have input focus, 3496 // then drop this event. This could be an event that came back from the previous 3497 // stage but the window has lost focus in the meantime. 3498 Slog.w(TAG, "Dropping event due to no window focus: " + q.mEvent); 3499 return true; 3500 } 3501 return false; 3502 } 3503 3504 void dump(String prefix, PrintWriter writer) { 3505 if (mNext != null) { 3506 mNext.dump(prefix, writer); 3507 } 3508 } 3509 } 3510 3511 /** 3512 * Base class for implementing an input pipeline stage that supports 3513 * asynchronous and out-of-order processing of input events. 3514 * <p> 3515 * In addition to what a normal input stage can do, an asynchronous 3516 * input stage may also defer an input event that has been delivered to it 3517 * and finish or forward it later. 3518 * </p> 3519 */ 3520 abstract class AsyncInputStage extends InputStage { 3521 private final String mTraceCounter; 3522 3523 private QueuedInputEvent mQueueHead; 3524 private QueuedInputEvent mQueueTail; 3525 private int mQueueLength; 3526 3527 protected static final int DEFER = 3; 3528 3529 /** 3530 * Creates an asynchronous input stage. 3531 * @param next The next stage to which events should be forwarded. 3532 * @param traceCounter The name of a counter to record the size of 3533 * the queue of pending events. 3534 */ 3535 public AsyncInputStage(InputStage next, String traceCounter) { 3536 super(next); 3537 mTraceCounter = traceCounter; 3538 } 3539 3540 /** 3541 * Marks the event as deferred, which is to say that it will be handled 3542 * asynchronously. The caller is responsible for calling {@link #forward} 3543 * or {@link #finish} later when it is done handling the event. 3544 */ 3545 protected void defer(QueuedInputEvent q) { 3546 q.mFlags |= QueuedInputEvent.FLAG_DEFERRED; 3547 enqueue(q); 3548 } 3549 3550 @Override 3551 protected void forward(QueuedInputEvent q) { 3552 // Clear the deferred flag. 3553 q.mFlags &= ~QueuedInputEvent.FLAG_DEFERRED; 3554 3555 // Fast path if the queue is empty. 3556 QueuedInputEvent curr = mQueueHead; 3557 if (curr == null) { 3558 super.forward(q); 3559 return; 3560 } 3561 3562 // Determine whether the event must be serialized behind any others 3563 // before it can be delivered to the next stage. This is done because 3564 // deferred events might be handled out of order by the stage. 3565 final int deviceId = q.mEvent.getDeviceId(); 3566 QueuedInputEvent prev = null; 3567 boolean blocked = false; 3568 while (curr != null && curr != q) { 3569 if (!blocked && deviceId == curr.mEvent.getDeviceId()) { 3570 blocked = true; 3571 } 3572 prev = curr; 3573 curr = curr.mNext; 3574 } 3575 3576 // If the event is blocked, then leave it in the queue to be delivered later. 3577 // Note that the event might not yet be in the queue if it was not previously 3578 // deferred so we will enqueue it if needed. 3579 if (blocked) { 3580 if (curr == null) { 3581 enqueue(q); 3582 } 3583 return; 3584 } 3585 3586 // The event is not blocked. Deliver it immediately. 3587 if (curr != null) { 3588 curr = curr.mNext; 3589 dequeue(q, prev); 3590 } 3591 super.forward(q); 3592 3593 // Dequeuing this event may have unblocked successors. Deliver them. 3594 while (curr != null) { 3595 if (deviceId == curr.mEvent.getDeviceId()) { 3596 if ((curr.mFlags & QueuedInputEvent.FLAG_DEFERRED) != 0) { 3597 break; 3598 } 3599 QueuedInputEvent next = curr.mNext; 3600 dequeue(curr, prev); 3601 super.forward(curr); 3602 curr = next; 3603 } else { 3604 prev = curr; 3605 curr = curr.mNext; 3606 } 3607 } 3608 } 3609 3610 @Override 3611 protected void apply(QueuedInputEvent q, int result) { 3612 if (result == DEFER) { 3613 defer(q); 3614 } else { 3615 super.apply(q, result); 3616 } 3617 } 3618 3619 private void enqueue(QueuedInputEvent q) { 3620 if (mQueueTail == null) { 3621 mQueueHead = q; 3622 mQueueTail = q; 3623 } else { 3624 mQueueTail.mNext = q; 3625 mQueueTail = q; 3626 } 3627 3628 mQueueLength += 1; 3629 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 3630 } 3631 3632 private void dequeue(QueuedInputEvent q, QueuedInputEvent prev) { 3633 if (prev == null) { 3634 mQueueHead = q.mNext; 3635 } else { 3636 prev.mNext = q.mNext; 3637 } 3638 if (mQueueTail == q) { 3639 mQueueTail = prev; 3640 } 3641 q.mNext = null; 3642 3643 mQueueLength -= 1; 3644 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 3645 } 3646 3647 @Override 3648 void dump(String prefix, PrintWriter writer) { 3649 writer.print(prefix); 3650 writer.print(getClass().getName()); 3651 writer.print(": mQueueLength="); 3652 writer.println(mQueueLength); 3653 3654 super.dump(prefix, writer); 3655 } 3656 } 3657 3658 /** 3659 * Delivers pre-ime input events to a native activity. 3660 * Does not support pointer events. 3661 */ 3662 final class NativePreImeInputStage extends AsyncInputStage 3663 implements InputQueue.FinishedInputEventCallback { 3664 public NativePreImeInputStage(InputStage next, String traceCounter) { 3665 super(next, traceCounter); 3666 } 3667 3668 @Override 3669 protected int onProcess(QueuedInputEvent q) { 3670 if (mInputQueue != null && q.mEvent instanceof KeyEvent) { 3671 mInputQueue.sendInputEvent(q.mEvent, q, true, this); 3672 return DEFER; 3673 } 3674 return FORWARD; 3675 } 3676 3677 @Override 3678 public void onFinishedInputEvent(Object token, boolean handled) { 3679 QueuedInputEvent q = (QueuedInputEvent)token; 3680 if (handled) { 3681 finish(q, true); 3682 return; 3683 } 3684 forward(q); 3685 } 3686 } 3687 3688 /** 3689 * Delivers pre-ime input events to the view hierarchy. 3690 * Does not support pointer events. 3691 */ 3692 final class ViewPreImeInputStage extends InputStage { 3693 public ViewPreImeInputStage(InputStage next) { 3694 super(next); 3695 } 3696 3697 @Override 3698 protected int onProcess(QueuedInputEvent q) { 3699 if (q.mEvent instanceof KeyEvent) { 3700 return processKeyEvent(q); 3701 } 3702 return FORWARD; 3703 } 3704 3705 private int processKeyEvent(QueuedInputEvent q) { 3706 final KeyEvent event = (KeyEvent)q.mEvent; 3707 if (mView.dispatchKeyEventPreIme(event)) { 3708 return FINISH_HANDLED; 3709 } 3710 return FORWARD; 3711 } 3712 } 3713 3714 /** 3715 * Delivers input events to the ime. 3716 * Does not support pointer events. 3717 */ 3718 final class ImeInputStage extends AsyncInputStage 3719 implements InputMethodManager.FinishedInputEventCallback { 3720 public ImeInputStage(InputStage next, String traceCounter) { 3721 super(next, traceCounter); 3722 } 3723 3724 @Override 3725 protected int onProcess(QueuedInputEvent q) { 3726 if (mLastWasImTarget && !isInLocalFocusMode()) { 3727 InputMethodManager imm = InputMethodManager.peekInstance(); 3728 if (imm != null) { 3729 final InputEvent event = q.mEvent; 3730 if (DEBUG_IMF) Log.v(TAG, "Sending input event to IME: " + event); 3731 int result = imm.dispatchInputEvent(event, q, this, mHandler); 3732 if (result == InputMethodManager.DISPATCH_HANDLED) { 3733 return FINISH_HANDLED; 3734 } else if (result == InputMethodManager.DISPATCH_NOT_HANDLED) { 3735 // The IME could not handle it, so skip along to the next InputStage 3736 return FORWARD; 3737 } else { 3738 return DEFER; // callback will be invoked later 3739 } 3740 } 3741 } 3742 return FORWARD; 3743 } 3744 3745 @Override 3746 public void onFinishedInputEvent(Object token, boolean handled) { 3747 QueuedInputEvent q = (QueuedInputEvent)token; 3748 if (handled) { 3749 finish(q, true); 3750 return; 3751 } 3752 forward(q); 3753 } 3754 } 3755 3756 /** 3757 * Performs early processing of post-ime input events. 3758 */ 3759 final class EarlyPostImeInputStage extends InputStage { 3760 public EarlyPostImeInputStage(InputStage next) { 3761 super(next); 3762 } 3763 3764 @Override 3765 protected int onProcess(QueuedInputEvent q) { 3766 if (q.mEvent instanceof KeyEvent) { 3767 return processKeyEvent(q); 3768 } else { 3769 final int source = q.mEvent.getSource(); 3770 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 3771 return processPointerEvent(q); 3772 } 3773 } 3774 return FORWARD; 3775 } 3776 3777 private int processKeyEvent(QueuedInputEvent q) { 3778 final KeyEvent event = (KeyEvent)q.mEvent; 3779 3780 // If the key's purpose is to exit touch mode then we consume it 3781 // and consider it handled. 3782 if (checkForLeavingTouchModeAndConsume(event)) { 3783 return FINISH_HANDLED; 3784 } 3785 3786 // Make sure the fallback event policy sees all keys that will be 3787 // delivered to the view hierarchy. 3788 mFallbackEventHandler.preDispatchKeyEvent(event); 3789 return FORWARD; 3790 } 3791 3792 private int processPointerEvent(QueuedInputEvent q) { 3793 final MotionEvent event = (MotionEvent)q.mEvent; 3794 3795 // Translate the pointer event for compatibility, if needed. 3796 if (mTranslator != null) { 3797 mTranslator.translateEventInScreenToAppWindow(event); 3798 } 3799 3800 // Enter touch mode on down or scroll. 3801 final int action = event.getAction(); 3802 if (action == MotionEvent.ACTION_DOWN || action == MotionEvent.ACTION_SCROLL) { 3803 ensureTouchMode(true); 3804 } 3805 3806 // Offset the scroll position. 3807 if (mCurScrollY != 0) { 3808 event.offsetLocation(0, mCurScrollY); 3809 } 3810 3811 // Remember the touch position for possible drag-initiation. 3812 if (event.isTouchEvent()) { 3813 mLastTouchPoint.x = event.getRawX(); 3814 mLastTouchPoint.y = event.getRawY(); 3815 } 3816 return FORWARD; 3817 } 3818 } 3819 3820 /** 3821 * Delivers post-ime input events to a native activity. 3822 */ 3823 final class NativePostImeInputStage extends AsyncInputStage 3824 implements InputQueue.FinishedInputEventCallback { 3825 public NativePostImeInputStage(InputStage next, String traceCounter) { 3826 super(next, traceCounter); 3827 } 3828 3829 @Override 3830 protected int onProcess(QueuedInputEvent q) { 3831 if (mInputQueue != null) { 3832 mInputQueue.sendInputEvent(q.mEvent, q, false, this); 3833 return DEFER; 3834 } 3835 return FORWARD; 3836 } 3837 3838 @Override 3839 public void onFinishedInputEvent(Object token, boolean handled) { 3840 QueuedInputEvent q = (QueuedInputEvent)token; 3841 if (handled) { 3842 finish(q, true); 3843 return; 3844 } 3845 forward(q); 3846 } 3847 } 3848 3849 /** 3850 * Delivers post-ime input events to the view hierarchy. 3851 */ 3852 final class ViewPostImeInputStage extends InputStage { 3853 public ViewPostImeInputStage(InputStage next) { 3854 super(next); 3855 } 3856 3857 @Override 3858 protected int onProcess(QueuedInputEvent q) { 3859 if (q.mEvent instanceof KeyEvent) { 3860 return processKeyEvent(q); 3861 } else { 3862 // If delivering a new non-key event, make sure the window is 3863 // now allowed to start updating. 3864 handleDispatchDoneAnimating(); 3865 final int source = q.mEvent.getSource(); 3866 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 3867 return processPointerEvent(q); 3868 } else if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 3869 return processTrackballEvent(q); 3870 } else { 3871 return processGenericMotionEvent(q); 3872 } 3873 } 3874 } 3875 3876 private int processKeyEvent(QueuedInputEvent q) { 3877 final KeyEvent event = (KeyEvent)q.mEvent; 3878 3879 if (event.getAction() != KeyEvent.ACTION_UP) { 3880 // If delivering a new key event, make sure the window is 3881 // now allowed to start updating. 3882 handleDispatchDoneAnimating(); 3883 } 3884 3885 // Deliver the key to the view hierarchy. 3886 if (mView.dispatchKeyEvent(event)) { 3887 return FINISH_HANDLED; 3888 } 3889 3890 if (shouldDropInputEvent(q)) { 3891 return FINISH_NOT_HANDLED; 3892 } 3893 3894 // If the Control modifier is held, try to interpret the key as a shortcut. 3895 if (event.getAction() == KeyEvent.ACTION_DOWN 3896 && event.isCtrlPressed() 3897 && event.getRepeatCount() == 0 3898 && !KeyEvent.isModifierKey(event.getKeyCode())) { 3899 if (mView.dispatchKeyShortcutEvent(event)) { 3900 return FINISH_HANDLED; 3901 } 3902 if (shouldDropInputEvent(q)) { 3903 return FINISH_NOT_HANDLED; 3904 } 3905 } 3906 3907 // Apply the fallback event policy. 3908 if (mFallbackEventHandler.dispatchKeyEvent(event)) { 3909 return FINISH_HANDLED; 3910 } 3911 if (shouldDropInputEvent(q)) { 3912 return FINISH_NOT_HANDLED; 3913 } 3914 3915 // Handle automatic focus changes. 3916 if (event.getAction() == KeyEvent.ACTION_DOWN) { 3917 int direction = 0; 3918 switch (event.getKeyCode()) { 3919 case KeyEvent.KEYCODE_DPAD_LEFT: 3920 if (event.hasNoModifiers()) { 3921 direction = View.FOCUS_LEFT; 3922 } 3923 break; 3924 case KeyEvent.KEYCODE_DPAD_RIGHT: 3925 if (event.hasNoModifiers()) { 3926 direction = View.FOCUS_RIGHT; 3927 } 3928 break; 3929 case KeyEvent.KEYCODE_DPAD_UP: 3930 if (event.hasNoModifiers()) { 3931 direction = View.FOCUS_UP; 3932 } 3933 break; 3934 case KeyEvent.KEYCODE_DPAD_DOWN: 3935 if (event.hasNoModifiers()) { 3936 direction = View.FOCUS_DOWN; 3937 } 3938 break; 3939 case KeyEvent.KEYCODE_TAB: 3940 if (event.hasNoModifiers()) { 3941 direction = View.FOCUS_FORWARD; 3942 } else if (event.hasModifiers(KeyEvent.META_SHIFT_ON)) { 3943 direction = View.FOCUS_BACKWARD; 3944 } 3945 break; 3946 } 3947 if (direction != 0) { 3948 View focused = mView.findFocus(); 3949 if (focused != null) { 3950 View v = focused.focusSearch(direction); 3951 if (v != null && v != focused) { 3952 // do the math the get the interesting rect 3953 // of previous focused into the coord system of 3954 // newly focused view 3955 focused.getFocusedRect(mTempRect); 3956 if (mView instanceof ViewGroup) { 3957 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 3958 focused, mTempRect); 3959 ((ViewGroup) mView).offsetRectIntoDescendantCoords( 3960 v, mTempRect); 3961 } 3962 if (v.requestFocus(direction, mTempRect)) { 3963 playSoundEffect(SoundEffectConstants 3964 .getContantForFocusDirection(direction)); 3965 return FINISH_HANDLED; 3966 } 3967 } 3968 3969 // Give the focused view a last chance to handle the dpad key. 3970 if (mView.dispatchUnhandledMove(focused, direction)) { 3971 return FINISH_HANDLED; 3972 } 3973 } else { 3974 // find the best view to give focus to in this non-touch-mode with no-focus 3975 View v = focusSearch(null, direction); 3976 if (v != null && v.requestFocus(direction)) { 3977 return FINISH_HANDLED; 3978 } 3979 } 3980 } 3981 } 3982 return FORWARD; 3983 } 3984 3985 private int processPointerEvent(QueuedInputEvent q) { 3986 final MotionEvent event = (MotionEvent)q.mEvent; 3987 3988 if (mView.dispatchPointerEvent(event)) { 3989 return FINISH_HANDLED; 3990 } 3991 return FORWARD; 3992 } 3993 3994 private int processTrackballEvent(QueuedInputEvent q) { 3995 final MotionEvent event = (MotionEvent)q.mEvent; 3996 3997 if (mView.dispatchTrackballEvent(event)) { 3998 return FINISH_HANDLED; 3999 } 4000 return FORWARD; 4001 } 4002 4003 private int processGenericMotionEvent(QueuedInputEvent q) { 4004 final MotionEvent event = (MotionEvent)q.mEvent; 4005 4006 // Deliver the event to the view. 4007 if (mView.dispatchGenericMotionEvent(event)) { 4008 return FINISH_HANDLED; 4009 } 4010 return FORWARD; 4011 } 4012 } 4013 4014 /** 4015 * Performs synthesis of new input events from unhandled input events. 4016 */ 4017 final class SyntheticInputStage extends InputStage { 4018 private final SyntheticTrackballHandler mTrackball = new SyntheticTrackballHandler(); 4019 private final SyntheticJoystickHandler mJoystick = new SyntheticJoystickHandler(); 4020 private final SyntheticTouchNavigationHandler mTouchNavigation = 4021 new SyntheticTouchNavigationHandler(); 4022 private final SyntheticKeyboardHandler mKeyboard = new SyntheticKeyboardHandler(); 4023 4024 public SyntheticInputStage() { 4025 super(null); 4026 } 4027 4028 @Override 4029 protected int onProcess(QueuedInputEvent q) { 4030 q.mFlags |= QueuedInputEvent.FLAG_RESYNTHESIZED; 4031 if (q.mEvent instanceof MotionEvent) { 4032 final MotionEvent event = (MotionEvent)q.mEvent; 4033 final int source = event.getSource(); 4034 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 4035 mTrackball.process(event); 4036 return FINISH_HANDLED; 4037 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 4038 mJoystick.process(event); 4039 return FINISH_HANDLED; 4040 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 4041 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 4042 mTouchNavigation.process(event); 4043 return FINISH_HANDLED; 4044 } 4045 } else if ((q.mFlags & QueuedInputEvent.FLAG_UNHANDLED) != 0) { 4046 mKeyboard.process((KeyEvent)q.mEvent); 4047 return FINISH_HANDLED; 4048 } 4049 4050 return FORWARD; 4051 } 4052 4053 @Override 4054 protected void onDeliverToNext(QueuedInputEvent q) { 4055 if ((q.mFlags & QueuedInputEvent.FLAG_RESYNTHESIZED) == 0) { 4056 // Cancel related synthetic events if any prior stage has handled the event. 4057 if (q.mEvent instanceof MotionEvent) { 4058 final MotionEvent event = (MotionEvent)q.mEvent; 4059 final int source = event.getSource(); 4060 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 4061 mTrackball.cancel(event); 4062 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 4063 mJoystick.cancel(event); 4064 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 4065 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 4066 mTouchNavigation.cancel(event); 4067 } 4068 } 4069 } 4070 super.onDeliverToNext(q); 4071 } 4072 } 4073 4074 /** 4075 * Creates dpad events from unhandled trackball movements. 4076 */ 4077 final class SyntheticTrackballHandler { 4078 private final TrackballAxis mX = new TrackballAxis(); 4079 private final TrackballAxis mY = new TrackballAxis(); 4080 private long mLastTime; 4081 4082 public void process(MotionEvent event) { 4083 // Translate the trackball event into DPAD keys and try to deliver those. 4084 long curTime = SystemClock.uptimeMillis(); 4085 if ((mLastTime + MAX_TRACKBALL_DELAY) < curTime) { 4086 // It has been too long since the last movement, 4087 // so restart at the beginning. 4088 mX.reset(0); 4089 mY.reset(0); 4090 mLastTime = curTime; 4091 } 4092 4093 final int action = event.getAction(); 4094 final int metaState = event.getMetaState(); 4095 switch (action) { 4096 case MotionEvent.ACTION_DOWN: 4097 mX.reset(2); 4098 mY.reset(2); 4099 enqueueInputEvent(new KeyEvent(curTime, curTime, 4100 KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 4101 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4102 InputDevice.SOURCE_KEYBOARD)); 4103 break; 4104 case MotionEvent.ACTION_UP: 4105 mX.reset(2); 4106 mY.reset(2); 4107 enqueueInputEvent(new KeyEvent(curTime, curTime, 4108 KeyEvent.ACTION_UP, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 4109 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4110 InputDevice.SOURCE_KEYBOARD)); 4111 break; 4112 } 4113 4114 if (DEBUG_TRACKBALL) Log.v(TAG, "TB X=" + mX.position + " step=" 4115 + mX.step + " dir=" + mX.dir + " acc=" + mX.acceleration 4116 + " move=" + event.getX() 4117 + " / Y=" + mY.position + " step=" 4118 + mY.step + " dir=" + mY.dir + " acc=" + mY.acceleration 4119 + " move=" + event.getY()); 4120 final float xOff = mX.collect(event.getX(), event.getEventTime(), "X"); 4121 final float yOff = mY.collect(event.getY(), event.getEventTime(), "Y"); 4122 4123 // Generate DPAD events based on the trackball movement. 4124 // We pick the axis that has moved the most as the direction of 4125 // the DPAD. When we generate DPAD events for one axis, then the 4126 // other axis is reset -- we don't want to perform DPAD jumps due 4127 // to slight movements in the trackball when making major movements 4128 // along the other axis. 4129 int keycode = 0; 4130 int movement = 0; 4131 float accel = 1; 4132 if (xOff > yOff) { 4133 movement = mX.generate(); 4134 if (movement != 0) { 4135 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_RIGHT 4136 : KeyEvent.KEYCODE_DPAD_LEFT; 4137 accel = mX.acceleration; 4138 mY.reset(2); 4139 } 4140 } else if (yOff > 0) { 4141 movement = mY.generate(); 4142 if (movement != 0) { 4143 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_DOWN 4144 : KeyEvent.KEYCODE_DPAD_UP; 4145 accel = mY.acceleration; 4146 mX.reset(2); 4147 } 4148 } 4149 4150 if (keycode != 0) { 4151 if (movement < 0) movement = -movement; 4152 int accelMovement = (int)(movement * accel); 4153 if (DEBUG_TRACKBALL) Log.v(TAG, "Move: movement=" + movement 4154 + " accelMovement=" + accelMovement 4155 + " accel=" + accel); 4156 if (accelMovement > movement) { 4157 if (DEBUG_TRACKBALL) Log.v(TAG, "Delivering fake DPAD: " 4158 + keycode); 4159 movement--; 4160 int repeatCount = accelMovement - movement; 4161 enqueueInputEvent(new KeyEvent(curTime, curTime, 4162 KeyEvent.ACTION_MULTIPLE, keycode, repeatCount, metaState, 4163 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4164 InputDevice.SOURCE_KEYBOARD)); 4165 } 4166 while (movement > 0) { 4167 if (DEBUG_TRACKBALL) Log.v(TAG, "Delivering fake DPAD: " 4168 + keycode); 4169 movement--; 4170 curTime = SystemClock.uptimeMillis(); 4171 enqueueInputEvent(new KeyEvent(curTime, curTime, 4172 KeyEvent.ACTION_DOWN, keycode, 0, metaState, 4173 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4174 InputDevice.SOURCE_KEYBOARD)); 4175 enqueueInputEvent(new KeyEvent(curTime, curTime, 4176 KeyEvent.ACTION_UP, keycode, 0, metaState, 4177 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4178 InputDevice.SOURCE_KEYBOARD)); 4179 } 4180 mLastTime = curTime; 4181 } 4182 } 4183 4184 public void cancel(MotionEvent event) { 4185 mLastTime = Integer.MIN_VALUE; 4186 4187 // If we reach this, we consumed a trackball event. 4188 // Because we will not translate the trackball event into a key event, 4189 // touch mode will not exit, so we exit touch mode here. 4190 if (mView != null && mAdded) { 4191 ensureTouchMode(false); 4192 } 4193 } 4194 } 4195 4196 /** 4197 * Maintains state information for a single trackball axis, generating 4198 * discrete (DPAD) movements based on raw trackball motion. 4199 */ 4200 static final class TrackballAxis { 4201 /** 4202 * The maximum amount of acceleration we will apply. 4203 */ 4204 static final float MAX_ACCELERATION = 20; 4205 4206 /** 4207 * The maximum amount of time (in milliseconds) between events in order 4208 * for us to consider the user to be doing fast trackball movements, 4209 * and thus apply an acceleration. 4210 */ 4211 static final long FAST_MOVE_TIME = 150; 4212 4213 /** 4214 * Scaling factor to the time (in milliseconds) between events to how 4215 * much to multiple/divide the current acceleration. When movement 4216 * is < FAST_MOVE_TIME this multiplies the acceleration; when > 4217 * FAST_MOVE_TIME it divides it. 4218 */ 4219 static final float ACCEL_MOVE_SCALING_FACTOR = (1.0f/40); 4220 4221 static final float FIRST_MOVEMENT_THRESHOLD = 0.5f; 4222 static final float SECOND_CUMULATIVE_MOVEMENT_THRESHOLD = 2.0f; 4223 static final float SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD = 1.0f; 4224 4225 float position; 4226 float acceleration = 1; 4227 long lastMoveTime = 0; 4228 int step; 4229 int dir; 4230 int nonAccelMovement; 4231 4232 void reset(int _step) { 4233 position = 0; 4234 acceleration = 1; 4235 lastMoveTime = 0; 4236 step = _step; 4237 dir = 0; 4238 } 4239 4240 /** 4241 * Add trackball movement into the state. If the direction of movement 4242 * has been reversed, the state is reset before adding the 4243 * movement (so that you don't have to compensate for any previously 4244 * collected movement before see the result of the movement in the 4245 * new direction). 4246 * 4247 * @return Returns the absolute value of the amount of movement 4248 * collected so far. 4249 */ 4250 float collect(float off, long time, String axis) { 4251 long normTime; 4252 if (off > 0) { 4253 normTime = (long)(off * FAST_MOVE_TIME); 4254 if (dir < 0) { 4255 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to positive!"); 4256 position = 0; 4257 step = 0; 4258 acceleration = 1; 4259 lastMoveTime = 0; 4260 } 4261 dir = 1; 4262 } else if (off < 0) { 4263 normTime = (long)((-off) * FAST_MOVE_TIME); 4264 if (dir > 0) { 4265 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to negative!"); 4266 position = 0; 4267 step = 0; 4268 acceleration = 1; 4269 lastMoveTime = 0; 4270 } 4271 dir = -1; 4272 } else { 4273 normTime = 0; 4274 } 4275 4276 // The number of milliseconds between each movement that is 4277 // considered "normal" and will not result in any acceleration 4278 // or deceleration, scaled by the offset we have here. 4279 if (normTime > 0) { 4280 long delta = time - lastMoveTime; 4281 lastMoveTime = time; 4282 float acc = acceleration; 4283 if (delta < normTime) { 4284 // The user is scrolling rapidly, so increase acceleration. 4285 float scale = (normTime-delta) * ACCEL_MOVE_SCALING_FACTOR; 4286 if (scale > 1) acc *= scale; 4287 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " accelerate: off=" 4288 + off + " normTime=" + normTime + " delta=" + delta 4289 + " scale=" + scale + " acc=" + acc); 4290 acceleration = acc < MAX_ACCELERATION ? acc : MAX_ACCELERATION; 4291 } else { 4292 // The user is scrolling slowly, so decrease acceleration. 4293 float scale = (delta-normTime) * ACCEL_MOVE_SCALING_FACTOR; 4294 if (scale > 1) acc /= scale; 4295 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " deccelerate: off=" 4296 + off + " normTime=" + normTime + " delta=" + delta 4297 + " scale=" + scale + " acc=" + acc); 4298 acceleration = acc > 1 ? acc : 1; 4299 } 4300 } 4301 position += off; 4302 return Math.abs(position); 4303 } 4304 4305 /** 4306 * Generate the number of discrete movement events appropriate for 4307 * the currently collected trackball movement. 4308 * 4309 * @return Returns the number of discrete movements, either positive 4310 * or negative, or 0 if there is not enough trackball movement yet 4311 * for a discrete movement. 4312 */ 4313 int generate() { 4314 int movement = 0; 4315 nonAccelMovement = 0; 4316 do { 4317 final int dir = position >= 0 ? 1 : -1; 4318 switch (step) { 4319 // If we are going to execute the first step, then we want 4320 // to do this as soon as possible instead of waiting for 4321 // a full movement, in order to make things look responsive. 4322 case 0: 4323 if (Math.abs(position) < FIRST_MOVEMENT_THRESHOLD) { 4324 return movement; 4325 } 4326 movement += dir; 4327 nonAccelMovement += dir; 4328 step = 1; 4329 break; 4330 // If we have generated the first movement, then we need 4331 // to wait for the second complete trackball motion before 4332 // generating the second discrete movement. 4333 case 1: 4334 if (Math.abs(position) < SECOND_CUMULATIVE_MOVEMENT_THRESHOLD) { 4335 return movement; 4336 } 4337 movement += dir; 4338 nonAccelMovement += dir; 4339 position -= SECOND_CUMULATIVE_MOVEMENT_THRESHOLD * dir; 4340 step = 2; 4341 break; 4342 // After the first two, we generate discrete movements 4343 // consistently with the trackball, applying an acceleration 4344 // if the trackball is moving quickly. This is a simple 4345 // acceleration on top of what we already compute based 4346 // on how quickly the wheel is being turned, to apply 4347 // a longer increasing acceleration to continuous movement 4348 // in one direction. 4349 default: 4350 if (Math.abs(position) < SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD) { 4351 return movement; 4352 } 4353 movement += dir; 4354 position -= dir * SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD; 4355 float acc = acceleration; 4356 acc *= 1.1f; 4357 acceleration = acc < MAX_ACCELERATION ? acc : acceleration; 4358 break; 4359 } 4360 } while (true); 4361 } 4362 } 4363 4364 /** 4365 * Creates dpad events from unhandled joystick movements. 4366 */ 4367 final class SyntheticJoystickHandler extends Handler { 4368 private final static String TAG = "SyntheticJoystickHandler"; 4369 private final static int MSG_ENQUEUE_X_AXIS_KEY_REPEAT = 1; 4370 private final static int MSG_ENQUEUE_Y_AXIS_KEY_REPEAT = 2; 4371 4372 private int mLastXDirection; 4373 private int mLastYDirection; 4374 private int mLastXKeyCode; 4375 private int mLastYKeyCode; 4376 4377 public SyntheticJoystickHandler() { 4378 super(true); 4379 } 4380 4381 @Override 4382 public void handleMessage(Message msg) { 4383 switch (msg.what) { 4384 case MSG_ENQUEUE_X_AXIS_KEY_REPEAT: 4385 case MSG_ENQUEUE_Y_AXIS_KEY_REPEAT: { 4386 KeyEvent oldEvent = (KeyEvent)msg.obj; 4387 KeyEvent e = KeyEvent.changeTimeRepeat(oldEvent, 4388 SystemClock.uptimeMillis(), 4389 oldEvent.getRepeatCount() + 1); 4390 if (mAttachInfo.mHasWindowFocus) { 4391 enqueueInputEvent(e); 4392 Message m = obtainMessage(msg.what, e); 4393 m.setAsynchronous(true); 4394 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatDelay()); 4395 } 4396 } break; 4397 } 4398 } 4399 4400 public void process(MotionEvent event) { 4401 switch(event.getActionMasked()) { 4402 case MotionEvent.ACTION_CANCEL: 4403 cancel(event); 4404 break; 4405 case MotionEvent.ACTION_MOVE: 4406 update(event, true); 4407 break; 4408 default: 4409 Log.w(TAG, "Unexpected action: " + event.getActionMasked()); 4410 } 4411 } 4412 4413 private void cancel(MotionEvent event) { 4414 removeMessages(MSG_ENQUEUE_X_AXIS_KEY_REPEAT); 4415 removeMessages(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT); 4416 update(event, false); 4417 } 4418 4419 private void update(MotionEvent event, boolean synthesizeNewKeys) { 4420 final long time = event.getEventTime(); 4421 final int metaState = event.getMetaState(); 4422 final int deviceId = event.getDeviceId(); 4423 final int source = event.getSource(); 4424 4425 int xDirection = joystickAxisValueToDirection( 4426 event.getAxisValue(MotionEvent.AXIS_HAT_X)); 4427 if (xDirection == 0) { 4428 xDirection = joystickAxisValueToDirection(event.getX()); 4429 } 4430 4431 int yDirection = joystickAxisValueToDirection( 4432 event.getAxisValue(MotionEvent.AXIS_HAT_Y)); 4433 if (yDirection == 0) { 4434 yDirection = joystickAxisValueToDirection(event.getY()); 4435 } 4436 4437 if (xDirection != mLastXDirection) { 4438 if (mLastXKeyCode != 0) { 4439 removeMessages(MSG_ENQUEUE_X_AXIS_KEY_REPEAT); 4440 enqueueInputEvent(new KeyEvent(time, time, 4441 KeyEvent.ACTION_UP, mLastXKeyCode, 0, metaState, 4442 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4443 mLastXKeyCode = 0; 4444 } 4445 4446 mLastXDirection = xDirection; 4447 4448 if (xDirection != 0 && synthesizeNewKeys) { 4449 mLastXKeyCode = xDirection > 0 4450 ? KeyEvent.KEYCODE_DPAD_RIGHT : KeyEvent.KEYCODE_DPAD_LEFT; 4451 final KeyEvent e = new KeyEvent(time, time, 4452 KeyEvent.ACTION_DOWN, mLastXKeyCode, 0, metaState, 4453 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4454 enqueueInputEvent(e); 4455 Message m = obtainMessage(MSG_ENQUEUE_X_AXIS_KEY_REPEAT, e); 4456 m.setAsynchronous(true); 4457 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4458 } 4459 } 4460 4461 if (yDirection != mLastYDirection) { 4462 if (mLastYKeyCode != 0) { 4463 removeMessages(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT); 4464 enqueueInputEvent(new KeyEvent(time, time, 4465 KeyEvent.ACTION_UP, mLastYKeyCode, 0, metaState, 4466 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4467 mLastYKeyCode = 0; 4468 } 4469 4470 mLastYDirection = yDirection; 4471 4472 if (yDirection != 0 && synthesizeNewKeys) { 4473 mLastYKeyCode = yDirection > 0 4474 ? KeyEvent.KEYCODE_DPAD_DOWN : KeyEvent.KEYCODE_DPAD_UP; 4475 final KeyEvent e = new KeyEvent(time, time, 4476 KeyEvent.ACTION_DOWN, mLastYKeyCode, 0, metaState, 4477 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4478 enqueueInputEvent(e); 4479 Message m = obtainMessage(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT, e); 4480 m.setAsynchronous(true); 4481 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4482 } 4483 } 4484 } 4485 4486 private int joystickAxisValueToDirection(float value) { 4487 if (value >= 0.5f) { 4488 return 1; 4489 } else if (value <= -0.5f) { 4490 return -1; 4491 } else { 4492 return 0; 4493 } 4494 } 4495 } 4496 4497 /** 4498 * Creates dpad events from unhandled touch navigation movements. 4499 */ 4500 final class SyntheticTouchNavigationHandler extends Handler { 4501 private static final String LOCAL_TAG = "SyntheticTouchNavigationHandler"; 4502 private static final boolean LOCAL_DEBUG = false; 4503 4504 // Assumed nominal width and height in millimeters of a touch navigation pad, 4505 // if no resolution information is available from the input system. 4506 private static final float DEFAULT_WIDTH_MILLIMETERS = 48; 4507 private static final float DEFAULT_HEIGHT_MILLIMETERS = 48; 4508 4509 /* TODO: These constants should eventually be moved to ViewConfiguration. */ 4510 4511 // The nominal distance traveled to move by one unit. 4512 private static final int TICK_DISTANCE_MILLIMETERS = 12; 4513 4514 // Minimum and maximum fling velocity in ticks per second. 4515 // The minimum velocity should be set such that we perform enough ticks per 4516 // second that the fling appears to be fluid. For example, if we set the minimum 4517 // to 2 ticks per second, then there may be up to half a second delay between the next 4518 // to last and last ticks which is noticeably discrete and jerky. This value should 4519 // probably not be set to anything less than about 4. 4520 // If fling accuracy is a problem then consider tuning the tick distance instead. 4521 private static final float MIN_FLING_VELOCITY_TICKS_PER_SECOND = 6f; 4522 private static final float MAX_FLING_VELOCITY_TICKS_PER_SECOND = 20f; 4523 4524 // Fling velocity decay factor applied after each new key is emitted. 4525 // This parameter controls the deceleration and overall duration of the fling. 4526 // The fling stops automatically when its velocity drops below the minimum 4527 // fling velocity defined above. 4528 private static final float FLING_TICK_DECAY = 0.8f; 4529 4530 /* The input device that we are tracking. */ 4531 4532 private int mCurrentDeviceId = -1; 4533 private int mCurrentSource; 4534 private boolean mCurrentDeviceSupported; 4535 4536 /* Configuration for the current input device. */ 4537 4538 // The scaled tick distance. A movement of this amount should generally translate 4539 // into a single dpad event in a given direction. 4540 private float mConfigTickDistance; 4541 4542 // The minimum and maximum scaled fling velocity. 4543 private float mConfigMinFlingVelocity; 4544 private float mConfigMaxFlingVelocity; 4545 4546 /* Tracking state. */ 4547 4548 // The velocity tracker for detecting flings. 4549 private VelocityTracker mVelocityTracker; 4550 4551 // The active pointer id, or -1 if none. 4552 private int mActivePointerId = -1; 4553 4554 // Location where tracking started. 4555 private float mStartX; 4556 private float mStartY; 4557 4558 // Most recently observed position. 4559 private float mLastX; 4560 private float mLastY; 4561 4562 // Accumulated movement delta since the last direction key was sent. 4563 private float mAccumulatedX; 4564 private float mAccumulatedY; 4565 4566 // Set to true if any movement was delivered to the app. 4567 // Implies that tap slop was exceeded. 4568 private boolean mConsumedMovement; 4569 4570 // The most recently sent key down event. 4571 // The keycode remains set until the direction changes or a fling ends 4572 // so that repeated key events may be generated as required. 4573 private long mPendingKeyDownTime; 4574 private int mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 4575 private int mPendingKeyRepeatCount; 4576 private int mPendingKeyMetaState; 4577 4578 // The current fling velocity while a fling is in progress. 4579 private boolean mFlinging; 4580 private float mFlingVelocity; 4581 4582 public SyntheticTouchNavigationHandler() { 4583 super(true); 4584 } 4585 4586 public void process(MotionEvent event) { 4587 // Update the current device information. 4588 final long time = event.getEventTime(); 4589 final int deviceId = event.getDeviceId(); 4590 final int source = event.getSource(); 4591 if (mCurrentDeviceId != deviceId || mCurrentSource != source) { 4592 finishKeys(time); 4593 finishTracking(time); 4594 mCurrentDeviceId = deviceId; 4595 mCurrentSource = source; 4596 mCurrentDeviceSupported = false; 4597 InputDevice device = event.getDevice(); 4598 if (device != null) { 4599 // In order to support an input device, we must know certain 4600 // characteristics about it, such as its size and resolution. 4601 InputDevice.MotionRange xRange = device.getMotionRange(MotionEvent.AXIS_X); 4602 InputDevice.MotionRange yRange = device.getMotionRange(MotionEvent.AXIS_Y); 4603 if (xRange != null && yRange != null) { 4604 mCurrentDeviceSupported = true; 4605 4606 // Infer the resolution if it not actually known. 4607 float xRes = xRange.getResolution(); 4608 if (xRes <= 0) { 4609 xRes = xRange.getRange() / DEFAULT_WIDTH_MILLIMETERS; 4610 } 4611 float yRes = yRange.getResolution(); 4612 if (yRes <= 0) { 4613 yRes = yRange.getRange() / DEFAULT_HEIGHT_MILLIMETERS; 4614 } 4615 float nominalRes = (xRes + yRes) * 0.5f; 4616 4617 // Precompute all of the configuration thresholds we will need. 4618 mConfigTickDistance = TICK_DISTANCE_MILLIMETERS * nominalRes; 4619 mConfigMinFlingVelocity = 4620 MIN_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 4621 mConfigMaxFlingVelocity = 4622 MAX_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 4623 4624 if (LOCAL_DEBUG) { 4625 Log.d(LOCAL_TAG, "Configured device " + mCurrentDeviceId 4626 + " (" + Integer.toHexString(mCurrentSource) + "): " 4627 + ", mConfigTickDistance=" + mConfigTickDistance 4628 + ", mConfigMinFlingVelocity=" + mConfigMinFlingVelocity 4629 + ", mConfigMaxFlingVelocity=" + mConfigMaxFlingVelocity); 4630 } 4631 } 4632 } 4633 } 4634 if (!mCurrentDeviceSupported) { 4635 return; 4636 } 4637 4638 // Handle the event. 4639 final int action = event.getActionMasked(); 4640 switch (action) { 4641 case MotionEvent.ACTION_DOWN: { 4642 boolean caughtFling = mFlinging; 4643 finishKeys(time); 4644 finishTracking(time); 4645 mActivePointerId = event.getPointerId(0); 4646 mVelocityTracker = VelocityTracker.obtain(); 4647 mVelocityTracker.addMovement(event); 4648 mStartX = event.getX(); 4649 mStartY = event.getY(); 4650 mLastX = mStartX; 4651 mLastY = mStartY; 4652 mAccumulatedX = 0; 4653 mAccumulatedY = 0; 4654 4655 // If we caught a fling, then pretend that the tap slop has already 4656 // been exceeded to suppress taps whose only purpose is to stop the fling. 4657 mConsumedMovement = caughtFling; 4658 break; 4659 } 4660 4661 case MotionEvent.ACTION_MOVE: 4662 case MotionEvent.ACTION_UP: { 4663 if (mActivePointerId < 0) { 4664 break; 4665 } 4666 final int index = event.findPointerIndex(mActivePointerId); 4667 if (index < 0) { 4668 finishKeys(time); 4669 finishTracking(time); 4670 break; 4671 } 4672 4673 mVelocityTracker.addMovement(event); 4674 final float x = event.getX(index); 4675 final float y = event.getY(index); 4676 mAccumulatedX += x - mLastX; 4677 mAccumulatedY += y - mLastY; 4678 mLastX = x; 4679 mLastY = y; 4680 4681 // Consume any accumulated movement so far. 4682 final int metaState = event.getMetaState(); 4683 consumeAccumulatedMovement(time, metaState); 4684 4685 // Detect taps and flings. 4686 if (action == MotionEvent.ACTION_UP) { 4687 if (mConsumedMovement && mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 4688 // It might be a fling. 4689 mVelocityTracker.computeCurrentVelocity(1000, mConfigMaxFlingVelocity); 4690 final float vx = mVelocityTracker.getXVelocity(mActivePointerId); 4691 final float vy = mVelocityTracker.getYVelocity(mActivePointerId); 4692 if (!startFling(time, vx, vy)) { 4693 finishKeys(time); 4694 } 4695 } 4696 finishTracking(time); 4697 } 4698 break; 4699 } 4700 4701 case MotionEvent.ACTION_CANCEL: { 4702 finishKeys(time); 4703 finishTracking(time); 4704 break; 4705 } 4706 } 4707 } 4708 4709 public void cancel(MotionEvent event) { 4710 if (mCurrentDeviceId == event.getDeviceId() 4711 && mCurrentSource == event.getSource()) { 4712 final long time = event.getEventTime(); 4713 finishKeys(time); 4714 finishTracking(time); 4715 } 4716 } 4717 4718 private void finishKeys(long time) { 4719 cancelFling(); 4720 sendKeyUp(time); 4721 } 4722 4723 private void finishTracking(long time) { 4724 if (mActivePointerId >= 0) { 4725 mActivePointerId = -1; 4726 mVelocityTracker.recycle(); 4727 mVelocityTracker = null; 4728 } 4729 } 4730 4731 private void consumeAccumulatedMovement(long time, int metaState) { 4732 final float absX = Math.abs(mAccumulatedX); 4733 final float absY = Math.abs(mAccumulatedY); 4734 if (absX >= absY) { 4735 if (absX >= mConfigTickDistance) { 4736 mAccumulatedX = consumeAccumulatedMovement(time, metaState, mAccumulatedX, 4737 KeyEvent.KEYCODE_DPAD_LEFT, KeyEvent.KEYCODE_DPAD_RIGHT); 4738 mAccumulatedY = 0; 4739 mConsumedMovement = true; 4740 } 4741 } else { 4742 if (absY >= mConfigTickDistance) { 4743 mAccumulatedY = consumeAccumulatedMovement(time, metaState, mAccumulatedY, 4744 KeyEvent.KEYCODE_DPAD_UP, KeyEvent.KEYCODE_DPAD_DOWN); 4745 mAccumulatedX = 0; 4746 mConsumedMovement = true; 4747 } 4748 } 4749 } 4750 4751 private float consumeAccumulatedMovement(long time, int metaState, 4752 float accumulator, int negativeKeyCode, int positiveKeyCode) { 4753 while (accumulator <= -mConfigTickDistance) { 4754 sendKeyDownOrRepeat(time, negativeKeyCode, metaState); 4755 accumulator += mConfigTickDistance; 4756 } 4757 while (accumulator >= mConfigTickDistance) { 4758 sendKeyDownOrRepeat(time, positiveKeyCode, metaState); 4759 accumulator -= mConfigTickDistance; 4760 } 4761 return accumulator; 4762 } 4763 4764 private void sendKeyDownOrRepeat(long time, int keyCode, int metaState) { 4765 if (mPendingKeyCode != keyCode) { 4766 sendKeyUp(time); 4767 mPendingKeyDownTime = time; 4768 mPendingKeyCode = keyCode; 4769 mPendingKeyRepeatCount = 0; 4770 } else { 4771 mPendingKeyRepeatCount += 1; 4772 } 4773 mPendingKeyMetaState = metaState; 4774 4775 // Note: Normally we would pass FLAG_LONG_PRESS when the repeat count is 1 4776 // but it doesn't quite make sense when simulating the events in this way. 4777 if (LOCAL_DEBUG) { 4778 Log.d(LOCAL_TAG, "Sending key down: keyCode=" + mPendingKeyCode 4779 + ", repeatCount=" + mPendingKeyRepeatCount 4780 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 4781 } 4782 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 4783 KeyEvent.ACTION_DOWN, mPendingKeyCode, mPendingKeyRepeatCount, 4784 mPendingKeyMetaState, mCurrentDeviceId, 4785 KeyEvent.FLAG_FALLBACK, mCurrentSource)); 4786 } 4787 4788 private void sendKeyUp(long time) { 4789 if (mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 4790 if (LOCAL_DEBUG) { 4791 Log.d(LOCAL_TAG, "Sending key up: keyCode=" + mPendingKeyCode 4792 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 4793 } 4794 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 4795 KeyEvent.ACTION_UP, mPendingKeyCode, 0, mPendingKeyMetaState, 4796 mCurrentDeviceId, 0, KeyEvent.FLAG_FALLBACK, 4797 mCurrentSource)); 4798 mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 4799 } 4800 } 4801 4802 private boolean startFling(long time, float vx, float vy) { 4803 if (LOCAL_DEBUG) { 4804 Log.d(LOCAL_TAG, "Considering fling: vx=" + vx + ", vy=" + vy 4805 + ", min=" + mConfigMinFlingVelocity); 4806 } 4807 4808 // Flings must be oriented in the same direction as the preceding movements. 4809 switch (mPendingKeyCode) { 4810 case KeyEvent.KEYCODE_DPAD_LEFT: 4811 if (-vx >= mConfigMinFlingVelocity 4812 && Math.abs(vy) < mConfigMinFlingVelocity) { 4813 mFlingVelocity = -vx; 4814 break; 4815 } 4816 return false; 4817 4818 case KeyEvent.KEYCODE_DPAD_RIGHT: 4819 if (vx >= mConfigMinFlingVelocity 4820 && Math.abs(vy) < mConfigMinFlingVelocity) { 4821 mFlingVelocity = vx; 4822 break; 4823 } 4824 return false; 4825 4826 case KeyEvent.KEYCODE_DPAD_UP: 4827 if (-vy >= mConfigMinFlingVelocity 4828 && Math.abs(vx) < mConfigMinFlingVelocity) { 4829 mFlingVelocity = -vy; 4830 break; 4831 } 4832 return false; 4833 4834 case KeyEvent.KEYCODE_DPAD_DOWN: 4835 if (vy >= mConfigMinFlingVelocity 4836 && Math.abs(vx) < mConfigMinFlingVelocity) { 4837 mFlingVelocity = vy; 4838 break; 4839 } 4840 return false; 4841 } 4842 4843 // Post the first fling event. 4844 mFlinging = postFling(time); 4845 return mFlinging; 4846 } 4847 4848 private boolean postFling(long time) { 4849 // The idea here is to estimate the time when the pointer would have 4850 // traveled one tick distance unit given the current fling velocity. 4851 // This effect creates continuity of motion. 4852 if (mFlingVelocity >= mConfigMinFlingVelocity) { 4853 long delay = (long)(mConfigTickDistance / mFlingVelocity * 1000); 4854 postAtTime(mFlingRunnable, time + delay); 4855 if (LOCAL_DEBUG) { 4856 Log.d(LOCAL_TAG, "Posted fling: velocity=" 4857 + mFlingVelocity + ", delay=" + delay 4858 + ", keyCode=" + mPendingKeyCode); 4859 } 4860 return true; 4861 } 4862 return false; 4863 } 4864 4865 private void cancelFling() { 4866 if (mFlinging) { 4867 removeCallbacks(mFlingRunnable); 4868 mFlinging = false; 4869 } 4870 } 4871 4872 private final Runnable mFlingRunnable = new Runnable() { 4873 @Override 4874 public void run() { 4875 final long time = SystemClock.uptimeMillis(); 4876 sendKeyDownOrRepeat(time, mPendingKeyCode, mPendingKeyMetaState); 4877 mFlingVelocity *= FLING_TICK_DECAY; 4878 if (!postFling(time)) { 4879 mFlinging = false; 4880 finishKeys(time); 4881 } 4882 } 4883 }; 4884 } 4885 4886 final class SyntheticKeyboardHandler { 4887 public void process(KeyEvent event) { 4888 if ((event.getFlags() & KeyEvent.FLAG_FALLBACK) != 0) { 4889 return; 4890 } 4891 4892 final KeyCharacterMap kcm = event.getKeyCharacterMap(); 4893 final int keyCode = event.getKeyCode(); 4894 final int metaState = event.getMetaState(); 4895 4896 // Check for fallback actions specified by the key character map. 4897 KeyCharacterMap.FallbackAction fallbackAction = 4898 kcm.getFallbackAction(keyCode, metaState); 4899 if (fallbackAction != null) { 4900 final int flags = event.getFlags() | KeyEvent.FLAG_FALLBACK; 4901 KeyEvent fallbackEvent = KeyEvent.obtain( 4902 event.getDownTime(), event.getEventTime(), 4903 event.getAction(), fallbackAction.keyCode, 4904 event.getRepeatCount(), fallbackAction.metaState, 4905 event.getDeviceId(), event.getScanCode(), 4906 flags, event.getSource(), null); 4907 fallbackAction.recycle(); 4908 enqueueInputEvent(fallbackEvent); 4909 } 4910 } 4911 } 4912 4913 /** 4914 * Returns true if the key is used for keyboard navigation. 4915 * @param keyEvent The key event. 4916 * @return True if the key is used for keyboard navigation. 4917 */ 4918 private static boolean isNavigationKey(KeyEvent keyEvent) { 4919 switch (keyEvent.getKeyCode()) { 4920 case KeyEvent.KEYCODE_DPAD_LEFT: 4921 case KeyEvent.KEYCODE_DPAD_RIGHT: 4922 case KeyEvent.KEYCODE_DPAD_UP: 4923 case KeyEvent.KEYCODE_DPAD_DOWN: 4924 case KeyEvent.KEYCODE_DPAD_CENTER: 4925 case KeyEvent.KEYCODE_PAGE_UP: 4926 case KeyEvent.KEYCODE_PAGE_DOWN: 4927 case KeyEvent.KEYCODE_MOVE_HOME: 4928 case KeyEvent.KEYCODE_MOVE_END: 4929 case KeyEvent.KEYCODE_TAB: 4930 case KeyEvent.KEYCODE_SPACE: 4931 case KeyEvent.KEYCODE_ENTER: 4932 return true; 4933 } 4934 return false; 4935 } 4936 4937 /** 4938 * Returns true if the key is used for typing. 4939 * @param keyEvent The key event. 4940 * @return True if the key is used for typing. 4941 */ 4942 private static boolean isTypingKey(KeyEvent keyEvent) { 4943 return keyEvent.getUnicodeChar() > 0; 4944 } 4945 4946 /** 4947 * See if the key event means we should leave touch mode (and leave touch mode if so). 4948 * @param event The key event. 4949 * @return Whether this key event should be consumed (meaning the act of 4950 * leaving touch mode alone is considered the event). 4951 */ 4952 private boolean checkForLeavingTouchModeAndConsume(KeyEvent event) { 4953 // Only relevant in touch mode. 4954 if (!mAttachInfo.mInTouchMode) { 4955 return false; 4956 } 4957 4958 // Only consider leaving touch mode on DOWN or MULTIPLE actions, never on UP. 4959 final int action = event.getAction(); 4960 if (action != KeyEvent.ACTION_DOWN && action != KeyEvent.ACTION_MULTIPLE) { 4961 return false; 4962 } 4963 4964 // Don't leave touch mode if the IME told us not to. 4965 if ((event.getFlags() & KeyEvent.FLAG_KEEP_TOUCH_MODE) != 0) { 4966 return false; 4967 } 4968 4969 // If the key can be used for keyboard navigation then leave touch mode 4970 // and select a focused view if needed (in ensureTouchMode). 4971 // When a new focused view is selected, we consume the navigation key because 4972 // navigation doesn't make much sense unless a view already has focus so 4973 // the key's purpose is to set focus. 4974 if (isNavigationKey(event)) { 4975 return ensureTouchMode(false); 4976 } 4977 4978 // If the key can be used for typing then leave touch mode 4979 // and select a focused view if needed (in ensureTouchMode). 4980 // Always allow the view to process the typing key. 4981 if (isTypingKey(event)) { 4982 ensureTouchMode(false); 4983 return false; 4984 } 4985 4986 return false; 4987 } 4988 4989 /* drag/drop */ 4990 void setLocalDragState(Object obj) { 4991 mLocalDragState = obj; 4992 } 4993 4994 private void handleDragEvent(DragEvent event) { 4995 // From the root, only drag start/end/location are dispatched. entered/exited 4996 // are determined and dispatched by the viewgroup hierarchy, who then report 4997 // that back here for ultimate reporting back to the framework. 4998 if (mView != null && mAdded) { 4999 final int what = event.mAction; 5000 5001 if (what == DragEvent.ACTION_DRAG_EXITED) { 5002 // A direct EXITED event means that the window manager knows we've just crossed 5003 // a window boundary, so the current drag target within this one must have 5004 // just been exited. Send it the usual notifications and then we're done 5005 // for now. 5006 mView.dispatchDragEvent(event); 5007 } else { 5008 // Cache the drag description when the operation starts, then fill it in 5009 // on subsequent calls as a convenience 5010 if (what == DragEvent.ACTION_DRAG_STARTED) { 5011 mCurrentDragView = null; // Start the current-recipient tracking 5012 mDragDescription = event.mClipDescription; 5013 } else { 5014 event.mClipDescription = mDragDescription; 5015 } 5016 5017 // For events with a [screen] location, translate into window coordinates 5018 if ((what == DragEvent.ACTION_DRAG_LOCATION) || (what == DragEvent.ACTION_DROP)) { 5019 mDragPoint.set(event.mX, event.mY); 5020 if (mTranslator != null) { 5021 mTranslator.translatePointInScreenToAppWindow(mDragPoint); 5022 } 5023 5024 if (mCurScrollY != 0) { 5025 mDragPoint.offset(0, mCurScrollY); 5026 } 5027 5028 event.mX = mDragPoint.x; 5029 event.mY = mDragPoint.y; 5030 } 5031 5032 // Remember who the current drag target is pre-dispatch 5033 final View prevDragView = mCurrentDragView; 5034 5035 // Now dispatch the drag/drop event 5036 boolean result = mView.dispatchDragEvent(event); 5037 5038 // If we changed apparent drag target, tell the OS about it 5039 if (prevDragView != mCurrentDragView) { 5040 try { 5041 if (prevDragView != null) { 5042 mWindowSession.dragRecipientExited(mWindow); 5043 } 5044 if (mCurrentDragView != null) { 5045 mWindowSession.dragRecipientEntered(mWindow); 5046 } 5047 } catch (RemoteException e) { 5048 Slog.e(TAG, "Unable to note drag target change"); 5049 } 5050 } 5051 5052 // Report the drop result when we're done 5053 if (what == DragEvent.ACTION_DROP) { 5054 mDragDescription = null; 5055 try { 5056 Log.i(TAG, "Reporting drop result: " + result); 5057 mWindowSession.reportDropResult(mWindow, result); 5058 } catch (RemoteException e) { 5059 Log.e(TAG, "Unable to report drop result"); 5060 } 5061 } 5062 5063 // When the drag operation ends, release any local state object 5064 // that may have been in use 5065 if (what == DragEvent.ACTION_DRAG_ENDED) { 5066 setLocalDragState(null); 5067 } 5068 } 5069 } 5070 event.recycle(); 5071 } 5072 5073 public void handleDispatchSystemUiVisibilityChanged(SystemUiVisibilityInfo args) { 5074 if (mSeq != args.seq) { 5075 // The sequence has changed, so we need to update our value and make 5076 // sure to do a traversal afterward so the window manager is given our 5077 // most recent data. 5078 mSeq = args.seq; 5079 mAttachInfo.mForceReportNewAttributes = true; 5080 scheduleTraversals(); 5081 } 5082 if (mView == null) return; 5083 if (args.localChanges != 0) { 5084 mView.updateLocalSystemUiVisibility(args.localValue, args.localChanges); 5085 } 5086 if (mAttachInfo != null) { 5087 int visibility = args.globalVisibility&View.SYSTEM_UI_CLEARABLE_FLAGS; 5088 if (visibility != mAttachInfo.mGlobalSystemUiVisibility) { 5089 mAttachInfo.mGlobalSystemUiVisibility = visibility; 5090 mView.dispatchSystemUiVisibilityChanged(visibility); 5091 } 5092 } 5093 } 5094 5095 public void handleDispatchDoneAnimating() { 5096 if (mWindowsAnimating) { 5097 mWindowsAnimating = false; 5098 if (!mDirty.isEmpty() || mIsAnimating || mFullRedrawNeeded) { 5099 scheduleTraversals(); 5100 } 5101 } 5102 } 5103 5104 public void getLastTouchPoint(Point outLocation) { 5105 outLocation.x = (int) mLastTouchPoint.x; 5106 outLocation.y = (int) mLastTouchPoint.y; 5107 } 5108 5109 public void setDragFocus(View newDragTarget) { 5110 if (mCurrentDragView != newDragTarget) { 5111 mCurrentDragView = newDragTarget; 5112 } 5113 } 5114 5115 private AudioManager getAudioManager() { 5116 if (mView == null) { 5117 throw new IllegalStateException("getAudioManager called when there is no mView"); 5118 } 5119 if (mAudioManager == null) { 5120 mAudioManager = (AudioManager) mView.getContext().getSystemService(Context.AUDIO_SERVICE); 5121 } 5122 return mAudioManager; 5123 } 5124 5125 public AccessibilityInteractionController getAccessibilityInteractionController() { 5126 if (mView == null) { 5127 throw new IllegalStateException("getAccessibilityInteractionController" 5128 + " called when there is no mView"); 5129 } 5130 if (mAccessibilityInteractionController == null) { 5131 mAccessibilityInteractionController = new AccessibilityInteractionController(this); 5132 } 5133 return mAccessibilityInteractionController; 5134 } 5135 5136 private int relayoutWindow(WindowManager.LayoutParams params, int viewVisibility, 5137 boolean insetsPending) throws RemoteException { 5138 5139 float appScale = mAttachInfo.mApplicationScale; 5140 boolean restore = false; 5141 if (params != null && mTranslator != null) { 5142 restore = true; 5143 params.backup(); 5144 mTranslator.translateWindowLayout(params); 5145 } 5146 if (params != null) { 5147 if (DBG) Log.d(TAG, "WindowLayout in layoutWindow:" + params); 5148 } 5149 mPendingConfiguration.seq = 0; 5150 //Log.d(TAG, ">>>>>> CALLING relayout"); 5151 if (params != null && mOrigWindowType != params.type) { 5152 // For compatibility with old apps, don't crash here. 5153 if (mTargetSdkVersion < android.os.Build.VERSION_CODES.ICE_CREAM_SANDWICH) { 5154 Slog.w(TAG, "Window type can not be changed after " 5155 + "the window is added; ignoring change of " + mView); 5156 params.type = mOrigWindowType; 5157 } 5158 } 5159 int relayoutResult = mWindowSession.relayout( 5160 mWindow, mSeq, params, 5161 (int) (mView.getMeasuredWidth() * appScale + 0.5f), 5162 (int) (mView.getMeasuredHeight() * appScale + 0.5f), 5163 viewVisibility, insetsPending ? WindowManagerGlobal.RELAYOUT_INSETS_PENDING : 0, 5164 mWinFrame, mPendingOverscanInsets, mPendingContentInsets, mPendingVisibleInsets, 5165 mPendingConfiguration, mSurface); 5166 //Log.d(TAG, "<<<<<< BACK FROM relayout"); 5167 if (restore) { 5168 params.restore(); 5169 } 5170 5171 if (mTranslator != null) { 5172 mTranslator.translateRectInScreenToAppWinFrame(mWinFrame); 5173 mTranslator.translateRectInScreenToAppWindow(mPendingOverscanInsets); 5174 mTranslator.translateRectInScreenToAppWindow(mPendingContentInsets); 5175 mTranslator.translateRectInScreenToAppWindow(mPendingVisibleInsets); 5176 } 5177 return relayoutResult; 5178 } 5179 5180 /** 5181 * {@inheritDoc} 5182 */ 5183 @Override 5184 public void playSoundEffect(int effectId) { 5185 checkThread(); 5186 5187 if (mMediaDisabled) { 5188 return; 5189 } 5190 5191 try { 5192 final AudioManager audioManager = getAudioManager(); 5193 5194 switch (effectId) { 5195 case SoundEffectConstants.CLICK: 5196 audioManager.playSoundEffect(AudioManager.FX_KEY_CLICK); 5197 return; 5198 case SoundEffectConstants.NAVIGATION_DOWN: 5199 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_DOWN); 5200 return; 5201 case SoundEffectConstants.NAVIGATION_LEFT: 5202 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_LEFT); 5203 return; 5204 case SoundEffectConstants.NAVIGATION_RIGHT: 5205 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_RIGHT); 5206 return; 5207 case SoundEffectConstants.NAVIGATION_UP: 5208 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_UP); 5209 return; 5210 default: 5211 throw new IllegalArgumentException("unknown effect id " + effectId + 5212 " not defined in " + SoundEffectConstants.class.getCanonicalName()); 5213 } 5214 } catch (IllegalStateException e) { 5215 // Exception thrown by getAudioManager() when mView is null 5216 Log.e(TAG, "FATAL EXCEPTION when attempting to play sound effect: " + e); 5217 e.printStackTrace(); 5218 } 5219 } 5220 5221 /** 5222 * {@inheritDoc} 5223 */ 5224 @Override 5225 public boolean performHapticFeedback(int effectId, boolean always) { 5226 try { 5227 return mWindowSession.performHapticFeedback(mWindow, effectId, always); 5228 } catch (RemoteException e) { 5229 return false; 5230 } 5231 } 5232 5233 /** 5234 * {@inheritDoc} 5235 */ 5236 @Override 5237 public View focusSearch(View focused, int direction) { 5238 checkThread(); 5239 if (!(mView instanceof ViewGroup)) { 5240 return null; 5241 } 5242 return FocusFinder.getInstance().findNextFocus((ViewGroup) mView, focused, direction); 5243 } 5244 5245 public void debug() { 5246 mView.debug(); 5247 } 5248 5249 public void dump(String prefix, FileDescriptor fd, PrintWriter writer, String[] args) { 5250 String innerPrefix = prefix + " "; 5251 writer.print(prefix); writer.println("ViewRoot:"); 5252 writer.print(innerPrefix); writer.print("mAdded="); writer.print(mAdded); 5253 writer.print(" mRemoved="); writer.println(mRemoved); 5254 writer.print(innerPrefix); writer.print("mConsumeBatchedInputScheduled="); 5255 writer.println(mConsumeBatchedInputScheduled); 5256 writer.print(innerPrefix); writer.print("mPendingInputEventCount="); 5257 writer.println(mPendingInputEventCount); 5258 writer.print(innerPrefix); writer.print("mProcessInputEventsScheduled="); 5259 writer.println(mProcessInputEventsScheduled); 5260 writer.print(innerPrefix); writer.print("mTraversalScheduled="); 5261 writer.print(mTraversalScheduled); 5262 if (mTraversalScheduled) { 5263 writer.print(" (barrier="); writer.print(mTraversalBarrier); writer.println(")"); 5264 } else { 5265 writer.println(); 5266 } 5267 mFirstInputStage.dump(innerPrefix, writer); 5268 5269 mChoreographer.dump(prefix, writer); 5270 5271 writer.print(prefix); writer.println("View Hierarchy:"); 5272 dumpViewHierarchy(innerPrefix, writer, mView); 5273 } 5274 5275 private void dumpViewHierarchy(String prefix, PrintWriter writer, View view) { 5276 writer.print(prefix); 5277 if (view == null) { 5278 writer.println("null"); 5279 return; 5280 } 5281 writer.println(view.toString()); 5282 if (!(view instanceof ViewGroup)) { 5283 return; 5284 } 5285 ViewGroup grp = (ViewGroup)view; 5286 final int N = grp.getChildCount(); 5287 if (N <= 0) { 5288 return; 5289 } 5290 prefix = prefix + " "; 5291 for (int i=0; i<N; i++) { 5292 dumpViewHierarchy(prefix, writer, grp.getChildAt(i)); 5293 } 5294 } 5295 5296 public void dumpGfxInfo(int[] info) { 5297 info[0] = info[1] = 0; 5298 if (mView != null) { 5299 getGfxInfo(mView, info); 5300 } 5301 } 5302 5303 private static void getGfxInfo(View view, int[] info) { 5304 RenderNode renderNode = view.mRenderNode; 5305 info[0]++; 5306 if (renderNode != null) { 5307 info[1] += 0; /* TODO: Memory used by RenderNodes (properties + DisplayLists) */ 5308 } 5309 5310 if (view instanceof ViewGroup) { 5311 ViewGroup group = (ViewGroup) view; 5312 5313 int count = group.getChildCount(); 5314 for (int i = 0; i < count; i++) { 5315 getGfxInfo(group.getChildAt(i), info); 5316 } 5317 } 5318 } 5319 5320 /** 5321 * @param immediate True, do now if not in traversal. False, put on queue and do later. 5322 * @return True, request has been queued. False, request has been completed. 5323 */ 5324 boolean die(boolean immediate) { 5325 // Make sure we do execute immediately if we are in the middle of a traversal or the damage 5326 // done by dispatchDetachedFromWindow will cause havoc on return. 5327 if (immediate && !mIsInTraversal) { 5328 doDie(); 5329 return false; 5330 } 5331 5332 if (!mIsDrawing) { 5333 destroyHardwareRenderer(); 5334 } else { 5335 Log.e(TAG, "Attempting to destroy the window while drawing!\n" + 5336 " window=" + this + ", title=" + mWindowAttributes.getTitle()); 5337 } 5338 mHandler.sendEmptyMessage(MSG_DIE); 5339 return true; 5340 } 5341 5342 void doDie() { 5343 checkThread(); 5344 if (LOCAL_LOGV) Log.v(TAG, "DIE in " + this + " of " + mSurface); 5345 synchronized (this) { 5346 if (mRemoved) { 5347 return; 5348 } 5349 mRemoved = true; 5350 if (mAdded) { 5351 dispatchDetachedFromWindow(); 5352 } 5353 5354 if (mAdded && !mFirst) { 5355 destroyHardwareRenderer(); 5356 5357 if (mView != null) { 5358 int viewVisibility = mView.getVisibility(); 5359 boolean viewVisibilityChanged = mViewVisibility != viewVisibility; 5360 if (mWindowAttributesChanged || viewVisibilityChanged) { 5361 // If layout params have been changed, first give them 5362 // to the window manager to make sure it has the correct 5363 // animation info. 5364 try { 5365 if ((relayoutWindow(mWindowAttributes, viewVisibility, false) 5366 & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 5367 mWindowSession.finishDrawing(mWindow); 5368 } 5369 } catch (RemoteException e) { 5370 } 5371 } 5372 5373 mSurface.release(); 5374 } 5375 } 5376 5377 mAdded = false; 5378 } 5379 WindowManagerGlobal.getInstance().doRemoveView(this); 5380 } 5381 5382 public void requestUpdateConfiguration(Configuration config) { 5383 Message msg = mHandler.obtainMessage(MSG_UPDATE_CONFIGURATION, config); 5384 mHandler.sendMessage(msg); 5385 } 5386 5387 public void loadSystemProperties() { 5388 mHandler.post(new Runnable() { 5389 @Override 5390 public void run() { 5391 // Profiling 5392 mProfileRendering = SystemProperties.getBoolean(PROPERTY_PROFILE_RENDERING, false); 5393 profileRendering(mAttachInfo.mHasWindowFocus); 5394 5395 // Media (used by sound effects) 5396 mMediaDisabled = SystemProperties.getBoolean(PROPERTY_MEDIA_DISABLED, false); 5397 5398 // Hardware rendering 5399 if (mAttachInfo.mHardwareRenderer != null) { 5400 if (mAttachInfo.mHardwareRenderer.loadSystemProperties()) { 5401 invalidate(); 5402 } 5403 } 5404 5405 // Layout debugging 5406 boolean layout = SystemProperties.getBoolean(View.DEBUG_LAYOUT_PROPERTY, false); 5407 if (layout != mAttachInfo.mDebugLayout) { 5408 mAttachInfo.mDebugLayout = layout; 5409 if (!mHandler.hasMessages(MSG_INVALIDATE_WORLD)) { 5410 mHandler.sendEmptyMessageDelayed(MSG_INVALIDATE_WORLD, 200); 5411 } 5412 } 5413 } 5414 }); 5415 } 5416 5417 private void destroyHardwareRenderer() { 5418 AttachInfo attachInfo = mAttachInfo; 5419 HardwareRenderer hardwareRenderer = attachInfo.mHardwareRenderer; 5420 5421 if (hardwareRenderer != null) { 5422 if (mView != null) { 5423 hardwareRenderer.destroyHardwareResources(mView); 5424 } 5425 hardwareRenderer.destroy(true); 5426 hardwareRenderer.setRequested(false); 5427 5428 attachInfo.mHardwareRenderer = null; 5429 attachInfo.mHardwareAccelerated = false; 5430 } 5431 } 5432 5433 public void dispatchFinishInputConnection(InputConnection connection) { 5434 Message msg = mHandler.obtainMessage(MSG_FINISH_INPUT_CONNECTION, connection); 5435 mHandler.sendMessage(msg); 5436 } 5437 5438 public void dispatchResized(Rect frame, Rect overscanInsets, Rect contentInsets, 5439 Rect visibleInsets, boolean reportDraw, Configuration newConfig) { 5440 if (DEBUG_LAYOUT) Log.v(TAG, "Resizing " + this + ": frame=" + frame.toShortString() 5441 + " contentInsets=" + contentInsets.toShortString() 5442 + " visibleInsets=" + visibleInsets.toShortString() 5443 + " reportDraw=" + reportDraw); 5444 Message msg = mHandler.obtainMessage(reportDraw ? MSG_RESIZED_REPORT : MSG_RESIZED); 5445 if (mTranslator != null) { 5446 mTranslator.translateRectInScreenToAppWindow(frame); 5447 mTranslator.translateRectInScreenToAppWindow(overscanInsets); 5448 mTranslator.translateRectInScreenToAppWindow(contentInsets); 5449 mTranslator.translateRectInScreenToAppWindow(visibleInsets); 5450 } 5451 SomeArgs args = SomeArgs.obtain(); 5452 final boolean sameProcessCall = (Binder.getCallingPid() == android.os.Process.myPid()); 5453 args.arg1 = sameProcessCall ? new Rect(frame) : frame; 5454 args.arg2 = sameProcessCall ? new Rect(contentInsets) : contentInsets; 5455 args.arg3 = sameProcessCall ? new Rect(visibleInsets) : visibleInsets; 5456 args.arg4 = sameProcessCall && newConfig != null ? new Configuration(newConfig) : newConfig; 5457 args.arg5 = sameProcessCall ? new Rect(overscanInsets) : overscanInsets; 5458 msg.obj = args; 5459 mHandler.sendMessage(msg); 5460 } 5461 5462 public void dispatchMoved(int newX, int newY) { 5463 if (DEBUG_LAYOUT) Log.v(TAG, "Window moved " + this + ": newX=" + newX + " newY=" + newY); 5464 if (mTranslator != null) { 5465 PointF point = new PointF(newX, newY); 5466 mTranslator.translatePointInScreenToAppWindow(point); 5467 newX = (int) (point.x + 0.5); 5468 newY = (int) (point.y + 0.5); 5469 } 5470 Message msg = mHandler.obtainMessage(MSG_WINDOW_MOVED, newX, newY); 5471 mHandler.sendMessage(msg); 5472 } 5473 5474 /** 5475 * Represents a pending input event that is waiting in a queue. 5476 * 5477 * Input events are processed in serial order by the timestamp specified by 5478 * {@link InputEvent#getEventTimeNano()}. In general, the input dispatcher delivers 5479 * one input event to the application at a time and waits for the application 5480 * to finish handling it before delivering the next one. 5481 * 5482 * However, because the application or IME can synthesize and inject multiple 5483 * key events at a time without going through the input dispatcher, we end up 5484 * needing a queue on the application's side. 5485 */ 5486 private static final class QueuedInputEvent { 5487 public static final int FLAG_DELIVER_POST_IME = 1 << 0; 5488 public static final int FLAG_DEFERRED = 1 << 1; 5489 public static final int FLAG_FINISHED = 1 << 2; 5490 public static final int FLAG_FINISHED_HANDLED = 1 << 3; 5491 public static final int FLAG_RESYNTHESIZED = 1 << 4; 5492 public static final int FLAG_UNHANDLED = 1 << 5; 5493 5494 public QueuedInputEvent mNext; 5495 5496 public InputEvent mEvent; 5497 public InputEventReceiver mReceiver; 5498 public int mFlags; 5499 5500 public boolean shouldSkipIme() { 5501 if ((mFlags & FLAG_DELIVER_POST_IME) != 0) { 5502 return true; 5503 } 5504 return mEvent instanceof MotionEvent 5505 && mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER); 5506 } 5507 5508 public boolean shouldSendToSynthesizer() { 5509 if ((mFlags & FLAG_UNHANDLED) != 0) { 5510 return true; 5511 } 5512 5513 return false; 5514 } 5515 } 5516 5517 private QueuedInputEvent obtainQueuedInputEvent(InputEvent event, 5518 InputEventReceiver receiver, int flags) { 5519 QueuedInputEvent q = mQueuedInputEventPool; 5520 if (q != null) { 5521 mQueuedInputEventPoolSize -= 1; 5522 mQueuedInputEventPool = q.mNext; 5523 q.mNext = null; 5524 } else { 5525 q = new QueuedInputEvent(); 5526 } 5527 5528 q.mEvent = event; 5529 q.mReceiver = receiver; 5530 q.mFlags = flags; 5531 return q; 5532 } 5533 5534 private void recycleQueuedInputEvent(QueuedInputEvent q) { 5535 q.mEvent = null; 5536 q.mReceiver = null; 5537 5538 if (mQueuedInputEventPoolSize < MAX_QUEUED_INPUT_EVENT_POOL_SIZE) { 5539 mQueuedInputEventPoolSize += 1; 5540 q.mNext = mQueuedInputEventPool; 5541 mQueuedInputEventPool = q; 5542 } 5543 } 5544 5545 void enqueueInputEvent(InputEvent event) { 5546 enqueueInputEvent(event, null, 0, false); 5547 } 5548 5549 void enqueueInputEvent(InputEvent event, 5550 InputEventReceiver receiver, int flags, boolean processImmediately) { 5551 QueuedInputEvent q = obtainQueuedInputEvent(event, receiver, flags); 5552 5553 // Always enqueue the input event in order, regardless of its time stamp. 5554 // We do this because the application or the IME may inject key events 5555 // in response to touch events and we want to ensure that the injected keys 5556 // are processed in the order they were received and we cannot trust that 5557 // the time stamp of injected events are monotonic. 5558 QueuedInputEvent last = mPendingInputEventTail; 5559 if (last == null) { 5560 mPendingInputEventHead = q; 5561 mPendingInputEventTail = q; 5562 } else { 5563 last.mNext = q; 5564 mPendingInputEventTail = q; 5565 } 5566 mPendingInputEventCount += 1; 5567 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 5568 mPendingInputEventCount); 5569 5570 if (processImmediately) { 5571 doProcessInputEvents(); 5572 } else { 5573 scheduleProcessInputEvents(); 5574 } 5575 } 5576 5577 private void scheduleProcessInputEvents() { 5578 if (!mProcessInputEventsScheduled) { 5579 mProcessInputEventsScheduled = true; 5580 Message msg = mHandler.obtainMessage(MSG_PROCESS_INPUT_EVENTS); 5581 msg.setAsynchronous(true); 5582 mHandler.sendMessage(msg); 5583 } 5584 } 5585 5586 void doProcessInputEvents() { 5587 // Deliver all pending input events in the queue. 5588 while (mPendingInputEventHead != null) { 5589 QueuedInputEvent q = mPendingInputEventHead; 5590 mPendingInputEventHead = q.mNext; 5591 if (mPendingInputEventHead == null) { 5592 mPendingInputEventTail = null; 5593 } 5594 q.mNext = null; 5595 5596 mPendingInputEventCount -= 1; 5597 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 5598 mPendingInputEventCount); 5599 5600 deliverInputEvent(q); 5601 } 5602 5603 // We are done processing all input events that we can process right now 5604 // so we can clear the pending flag immediately. 5605 if (mProcessInputEventsScheduled) { 5606 mProcessInputEventsScheduled = false; 5607 mHandler.removeMessages(MSG_PROCESS_INPUT_EVENTS); 5608 } 5609 } 5610 5611 private void deliverInputEvent(QueuedInputEvent q) { 5612 Trace.asyncTraceBegin(Trace.TRACE_TAG_VIEW, "deliverInputEvent", 5613 q.mEvent.getSequenceNumber()); 5614 if (mInputEventConsistencyVerifier != null) { 5615 mInputEventConsistencyVerifier.onInputEvent(q.mEvent, 0); 5616 } 5617 5618 InputStage stage; 5619 if (q.shouldSendToSynthesizer()) { 5620 stage = mSyntheticInputStage; 5621 } else { 5622 stage = q.shouldSkipIme() ? mFirstPostImeInputStage : mFirstInputStage; 5623 } 5624 5625 if (stage != null) { 5626 stage.deliver(q); 5627 } else { 5628 finishInputEvent(q); 5629 } 5630 } 5631 5632 private void finishInputEvent(QueuedInputEvent q) { 5633 Trace.asyncTraceEnd(Trace.TRACE_TAG_VIEW, "deliverInputEvent", 5634 q.mEvent.getSequenceNumber()); 5635 if (q.mReceiver != null) { 5636 boolean handled = (q.mFlags & QueuedInputEvent.FLAG_FINISHED_HANDLED) != 0; 5637 q.mReceiver.finishInputEvent(q.mEvent, handled); 5638 } else { 5639 q.mEvent.recycleIfNeededAfterDispatch(); 5640 } 5641 5642 recycleQueuedInputEvent(q); 5643 } 5644 5645 static boolean isTerminalInputEvent(InputEvent event) { 5646 if (event instanceof KeyEvent) { 5647 final KeyEvent keyEvent = (KeyEvent)event; 5648 return keyEvent.getAction() == KeyEvent.ACTION_UP; 5649 } else { 5650 final MotionEvent motionEvent = (MotionEvent)event; 5651 final int action = motionEvent.getAction(); 5652 return action == MotionEvent.ACTION_UP 5653 || action == MotionEvent.ACTION_CANCEL 5654 || action == MotionEvent.ACTION_HOVER_EXIT; 5655 } 5656 } 5657 5658 void scheduleConsumeBatchedInput() { 5659 if (!mConsumeBatchedInputScheduled) { 5660 mConsumeBatchedInputScheduled = true; 5661 mChoreographer.postCallback(Choreographer.CALLBACK_INPUT, 5662 mConsumedBatchedInputRunnable, null); 5663 } 5664 } 5665 5666 void unscheduleConsumeBatchedInput() { 5667 if (mConsumeBatchedInputScheduled) { 5668 mConsumeBatchedInputScheduled = false; 5669 mChoreographer.removeCallbacks(Choreographer.CALLBACK_INPUT, 5670 mConsumedBatchedInputRunnable, null); 5671 } 5672 } 5673 5674 void doConsumeBatchedInput(long frameTimeNanos) { 5675 if (mConsumeBatchedInputScheduled) { 5676 mConsumeBatchedInputScheduled = false; 5677 if (mInputEventReceiver != null) { 5678 if (mInputEventReceiver.consumeBatchedInputEvents(frameTimeNanos)) { 5679 // If we consumed a batch here, we want to go ahead and schedule the 5680 // consumption of batched input events on the next frame. Otherwise, we would 5681 // wait until we have more input events pending and might get starved by other 5682 // things occurring in the process. 5683 scheduleConsumeBatchedInput(); 5684 } 5685 } 5686 doProcessInputEvents(); 5687 } 5688 } 5689 5690 final class TraversalRunnable implements Runnable { 5691 @Override 5692 public void run() { 5693 doTraversal(); 5694 } 5695 } 5696 final TraversalRunnable mTraversalRunnable = new TraversalRunnable(); 5697 5698 final class WindowInputEventReceiver extends InputEventReceiver { 5699 public WindowInputEventReceiver(InputChannel inputChannel, Looper looper) { 5700 super(inputChannel, looper); 5701 } 5702 5703 @Override 5704 public void onInputEvent(InputEvent event) { 5705 enqueueInputEvent(event, this, 0, true); 5706 } 5707 5708 @Override 5709 public void onBatchedInputEventPending() { 5710 scheduleConsumeBatchedInput(); 5711 } 5712 5713 @Override 5714 public void dispose() { 5715 unscheduleConsumeBatchedInput(); 5716 super.dispose(); 5717 } 5718 } 5719 WindowInputEventReceiver mInputEventReceiver; 5720 5721 final class ConsumeBatchedInputRunnable implements Runnable { 5722 @Override 5723 public void run() { 5724 doConsumeBatchedInput(mChoreographer.getFrameTimeNanos()); 5725 } 5726 } 5727 final ConsumeBatchedInputRunnable mConsumedBatchedInputRunnable = 5728 new ConsumeBatchedInputRunnable(); 5729 boolean mConsumeBatchedInputScheduled; 5730 5731 final class InvalidateOnAnimationRunnable implements Runnable { 5732 private boolean mPosted; 5733 private final ArrayList<View> mViews = new ArrayList<View>(); 5734 private final ArrayList<AttachInfo.InvalidateInfo> mViewRects = 5735 new ArrayList<AttachInfo.InvalidateInfo>(); 5736 private View[] mTempViews; 5737 private AttachInfo.InvalidateInfo[] mTempViewRects; 5738 5739 public void addView(View view) { 5740 synchronized (this) { 5741 mViews.add(view); 5742 postIfNeededLocked(); 5743 } 5744 } 5745 5746 public void addViewRect(AttachInfo.InvalidateInfo info) { 5747 synchronized (this) { 5748 mViewRects.add(info); 5749 postIfNeededLocked(); 5750 } 5751 } 5752 5753 public void removeView(View view) { 5754 synchronized (this) { 5755 mViews.remove(view); 5756 5757 for (int i = mViewRects.size(); i-- > 0; ) { 5758 AttachInfo.InvalidateInfo info = mViewRects.get(i); 5759 if (info.target == view) { 5760 mViewRects.remove(i); 5761 info.recycle(); 5762 } 5763 } 5764 5765 if (mPosted && mViews.isEmpty() && mViewRects.isEmpty()) { 5766 mChoreographer.removeCallbacks(Choreographer.CALLBACK_ANIMATION, this, null); 5767 mPosted = false; 5768 } 5769 } 5770 } 5771 5772 @Override 5773 public void run() { 5774 final int viewCount; 5775 final int viewRectCount; 5776 synchronized (this) { 5777 mPosted = false; 5778 5779 viewCount = mViews.size(); 5780 if (viewCount != 0) { 5781 mTempViews = mViews.toArray(mTempViews != null 5782 ? mTempViews : new View[viewCount]); 5783 mViews.clear(); 5784 } 5785 5786 viewRectCount = mViewRects.size(); 5787 if (viewRectCount != 0) { 5788 mTempViewRects = mViewRects.toArray(mTempViewRects != null 5789 ? mTempViewRects : new AttachInfo.InvalidateInfo[viewRectCount]); 5790 mViewRects.clear(); 5791 } 5792 } 5793 5794 for (int i = 0; i < viewCount; i++) { 5795 mTempViews[i].invalidate(); 5796 mTempViews[i] = null; 5797 } 5798 5799 for (int i = 0; i < viewRectCount; i++) { 5800 final View.AttachInfo.InvalidateInfo info = mTempViewRects[i]; 5801 info.target.invalidate(info.left, info.top, info.right, info.bottom); 5802 info.recycle(); 5803 } 5804 } 5805 5806 private void postIfNeededLocked() { 5807 if (!mPosted) { 5808 mChoreographer.postCallback(Choreographer.CALLBACK_ANIMATION, this, null); 5809 mPosted = true; 5810 } 5811 } 5812 } 5813 final InvalidateOnAnimationRunnable mInvalidateOnAnimationRunnable = 5814 new InvalidateOnAnimationRunnable(); 5815 5816 public void dispatchInvalidateDelayed(View view, long delayMilliseconds) { 5817 Message msg = mHandler.obtainMessage(MSG_INVALIDATE, view); 5818 mHandler.sendMessageDelayed(msg, delayMilliseconds); 5819 } 5820 5821 public void dispatchInvalidateRectDelayed(AttachInfo.InvalidateInfo info, 5822 long delayMilliseconds) { 5823 final Message msg = mHandler.obtainMessage(MSG_INVALIDATE_RECT, info); 5824 mHandler.sendMessageDelayed(msg, delayMilliseconds); 5825 } 5826 5827 public void dispatchInvalidateOnAnimation(View view) { 5828 mInvalidateOnAnimationRunnable.addView(view); 5829 } 5830 5831 public void dispatchInvalidateRectOnAnimation(AttachInfo.InvalidateInfo info) { 5832 mInvalidateOnAnimationRunnable.addViewRect(info); 5833 } 5834 5835 public void cancelInvalidate(View view) { 5836 mHandler.removeMessages(MSG_INVALIDATE, view); 5837 // fixme: might leak the AttachInfo.InvalidateInfo objects instead of returning 5838 // them to the pool 5839 mHandler.removeMessages(MSG_INVALIDATE_RECT, view); 5840 mInvalidateOnAnimationRunnable.removeView(view); 5841 } 5842 5843 public void dispatchInputEvent(InputEvent event) { 5844 dispatchInputEvent(event, null); 5845 } 5846 5847 public void dispatchInputEvent(InputEvent event, InputEventReceiver receiver) { 5848 SomeArgs args = SomeArgs.obtain(); 5849 args.arg1 = event; 5850 args.arg2 = receiver; 5851 Message msg = mHandler.obtainMessage(MSG_DISPATCH_INPUT_EVENT, args); 5852 msg.setAsynchronous(true); 5853 mHandler.sendMessage(msg); 5854 } 5855 5856 public void synthesizeInputEvent(InputEvent event) { 5857 Message msg = mHandler.obtainMessage(MSG_SYNTHESIZE_INPUT_EVENT, event); 5858 msg.setAsynchronous(true); 5859 mHandler.sendMessage(msg); 5860 } 5861 5862 public void dispatchKeyFromIme(KeyEvent event) { 5863 Message msg = mHandler.obtainMessage(MSG_DISPATCH_KEY_FROM_IME, event); 5864 msg.setAsynchronous(true); 5865 mHandler.sendMessage(msg); 5866 } 5867 5868 /** 5869 * Reinject unhandled {@link InputEvent}s in order to synthesize fallbacks events. 5870 * 5871 * Note that it is the responsibility of the caller of this API to recycle the InputEvent it 5872 * passes in. 5873 */ 5874 public void dispatchUnhandledInputEvent(InputEvent event) { 5875 if (event instanceof MotionEvent) { 5876 event = MotionEvent.obtain((MotionEvent) event); 5877 } 5878 synthesizeInputEvent(event); 5879 } 5880 5881 public void dispatchAppVisibility(boolean visible) { 5882 Message msg = mHandler.obtainMessage(MSG_DISPATCH_APP_VISIBILITY); 5883 msg.arg1 = visible ? 1 : 0; 5884 mHandler.sendMessage(msg); 5885 } 5886 5887 public void dispatchGetNewSurface() { 5888 Message msg = mHandler.obtainMessage(MSG_DISPATCH_GET_NEW_SURFACE); 5889 mHandler.sendMessage(msg); 5890 } 5891 5892 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 5893 Message msg = Message.obtain(); 5894 msg.what = MSG_WINDOW_FOCUS_CHANGED; 5895 msg.arg1 = hasFocus ? 1 : 0; 5896 msg.arg2 = inTouchMode ? 1 : 0; 5897 mHandler.sendMessage(msg); 5898 } 5899 5900 public void dispatchCloseSystemDialogs(String reason) { 5901 Message msg = Message.obtain(); 5902 msg.what = MSG_CLOSE_SYSTEM_DIALOGS; 5903 msg.obj = reason; 5904 mHandler.sendMessage(msg); 5905 } 5906 5907 public void dispatchDragEvent(DragEvent event) { 5908 final int what; 5909 if (event.getAction() == DragEvent.ACTION_DRAG_LOCATION) { 5910 what = MSG_DISPATCH_DRAG_LOCATION_EVENT; 5911 mHandler.removeMessages(what); 5912 } else { 5913 what = MSG_DISPATCH_DRAG_EVENT; 5914 } 5915 Message msg = mHandler.obtainMessage(what, event); 5916 mHandler.sendMessage(msg); 5917 } 5918 5919 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 5920 int localValue, int localChanges) { 5921 SystemUiVisibilityInfo args = new SystemUiVisibilityInfo(); 5922 args.seq = seq; 5923 args.globalVisibility = globalVisibility; 5924 args.localValue = localValue; 5925 args.localChanges = localChanges; 5926 mHandler.sendMessage(mHandler.obtainMessage(MSG_DISPATCH_SYSTEM_UI_VISIBILITY, args)); 5927 } 5928 5929 public void dispatchDoneAnimating() { 5930 mHandler.sendEmptyMessage(MSG_DISPATCH_DONE_ANIMATING); 5931 } 5932 5933 public void dispatchCheckFocus() { 5934 if (!mHandler.hasMessages(MSG_CHECK_FOCUS)) { 5935 // This will result in a call to checkFocus() below. 5936 mHandler.sendEmptyMessage(MSG_CHECK_FOCUS); 5937 } 5938 } 5939 5940 /** 5941 * Post a callback to send a 5942 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 5943 * This event is send at most once every 5944 * {@link ViewConfiguration#getSendRecurringAccessibilityEventsInterval()}. 5945 */ 5946 private void postSendWindowContentChangedCallback(View source, int changeType) { 5947 if (mSendWindowContentChangedAccessibilityEvent == null) { 5948 mSendWindowContentChangedAccessibilityEvent = 5949 new SendWindowContentChangedAccessibilityEvent(); 5950 } 5951 mSendWindowContentChangedAccessibilityEvent.runOrPost(source, changeType); 5952 } 5953 5954 /** 5955 * Remove a posted callback to send a 5956 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 5957 */ 5958 private void removeSendWindowContentChangedCallback() { 5959 if (mSendWindowContentChangedAccessibilityEvent != null) { 5960 mHandler.removeCallbacks(mSendWindowContentChangedAccessibilityEvent); 5961 } 5962 } 5963 5964 @Override 5965 public boolean showContextMenuForChild(View originalView) { 5966 return false; 5967 } 5968 5969 @Override 5970 public ActionMode startActionModeForChild(View originalView, ActionMode.Callback callback) { 5971 return null; 5972 } 5973 5974 @Override 5975 public void createContextMenu(ContextMenu menu) { 5976 } 5977 5978 @Override 5979 public void childDrawableStateChanged(View child) { 5980 } 5981 5982 @Override 5983 public boolean requestSendAccessibilityEvent(View child, AccessibilityEvent event) { 5984 if (mView == null) { 5985 return false; 5986 } 5987 // Intercept accessibility focus events fired by virtual nodes to keep 5988 // track of accessibility focus position in such nodes. 5989 final int eventType = event.getEventType(); 5990 switch (eventType) { 5991 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUSED: { 5992 final long sourceNodeId = event.getSourceNodeId(); 5993 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 5994 sourceNodeId); 5995 View source = mView.findViewByAccessibilityId(accessibilityViewId); 5996 if (source != null) { 5997 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 5998 if (provider != null) { 5999 AccessibilityNodeInfo node = provider.createAccessibilityNodeInfo( 6000 AccessibilityNodeInfo.getVirtualDescendantId(sourceNodeId)); 6001 setAccessibilityFocus(source, node); 6002 } 6003 } 6004 } break; 6005 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUS_CLEARED: { 6006 final long sourceNodeId = event.getSourceNodeId(); 6007 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 6008 sourceNodeId); 6009 View source = mView.findViewByAccessibilityId(accessibilityViewId); 6010 if (source != null) { 6011 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 6012 if (provider != null) { 6013 setAccessibilityFocus(null, null); 6014 } 6015 } 6016 } break; 6017 } 6018 mAccessibilityManager.sendAccessibilityEvent(event); 6019 return true; 6020 } 6021 6022 @Override 6023 public void notifySubtreeAccessibilityStateChanged(View child, View source, int changeType) { 6024 postSendWindowContentChangedCallback(source, changeType); 6025 } 6026 6027 @Override 6028 public boolean canResolveLayoutDirection() { 6029 return true; 6030 } 6031 6032 @Override 6033 public boolean isLayoutDirectionResolved() { 6034 return true; 6035 } 6036 6037 @Override 6038 public int getLayoutDirection() { 6039 return View.LAYOUT_DIRECTION_RESOLVED_DEFAULT; 6040 } 6041 6042 @Override 6043 public boolean canResolveTextDirection() { 6044 return true; 6045 } 6046 6047 @Override 6048 public boolean isTextDirectionResolved() { 6049 return true; 6050 } 6051 6052 @Override 6053 public int getTextDirection() { 6054 return View.TEXT_DIRECTION_RESOLVED_DEFAULT; 6055 } 6056 6057 @Override 6058 public boolean canResolveTextAlignment() { 6059 return true; 6060 } 6061 6062 @Override 6063 public boolean isTextAlignmentResolved() { 6064 return true; 6065 } 6066 6067 @Override 6068 public int getTextAlignment() { 6069 return View.TEXT_ALIGNMENT_RESOLVED_DEFAULT; 6070 } 6071 6072 private View getCommonPredecessor(View first, View second) { 6073 if (mAttachInfo != null) { 6074 if (mTempHashSet == null) { 6075 mTempHashSet = new HashSet<View>(); 6076 } 6077 HashSet<View> seen = mTempHashSet; 6078 seen.clear(); 6079 View firstCurrent = first; 6080 while (firstCurrent != null) { 6081 seen.add(firstCurrent); 6082 ViewParent firstCurrentParent = firstCurrent.mParent; 6083 if (firstCurrentParent instanceof View) { 6084 firstCurrent = (View) firstCurrentParent; 6085 } else { 6086 firstCurrent = null; 6087 } 6088 } 6089 View secondCurrent = second; 6090 while (secondCurrent != null) { 6091 if (seen.contains(secondCurrent)) { 6092 seen.clear(); 6093 return secondCurrent; 6094 } 6095 ViewParent secondCurrentParent = secondCurrent.mParent; 6096 if (secondCurrentParent instanceof View) { 6097 secondCurrent = (View) secondCurrentParent; 6098 } else { 6099 secondCurrent = null; 6100 } 6101 } 6102 seen.clear(); 6103 } 6104 return null; 6105 } 6106 6107 void checkThread() { 6108 if (mThread != Thread.currentThread()) { 6109 throw new CalledFromWrongThreadException( 6110 "Only the original thread that created a view hierarchy can touch its views."); 6111 } 6112 } 6113 6114 @Override 6115 public void requestDisallowInterceptTouchEvent(boolean disallowIntercept) { 6116 // ViewAncestor never intercepts touch event, so this can be a no-op 6117 } 6118 6119 @Override 6120 public boolean requestChildRectangleOnScreen(View child, Rect rectangle, boolean immediate) { 6121 final boolean scrolled = scrollToRectOrFocus(rectangle, immediate); 6122 if (rectangle != null) { 6123 mTempRect.set(rectangle); 6124 mTempRect.offset(0, -mCurScrollY); 6125 mTempRect.offset(mAttachInfo.mWindowLeft, mAttachInfo.mWindowTop); 6126 try { 6127 mWindowSession.onRectangleOnScreenRequested(mWindow, mTempRect, immediate); 6128 } catch (RemoteException re) { 6129 /* ignore */ 6130 } 6131 } 6132 return scrolled; 6133 } 6134 6135 @Override 6136 public void childHasTransientStateChanged(View child, boolean hasTransientState) { 6137 // Do nothing. 6138 } 6139 6140 @Override 6141 public boolean onStartNestedScroll(View child, View target, int nestedScrollAxes) { 6142 return false; 6143 } 6144 6145 @Override 6146 public void onStopNestedScroll(View target) { 6147 } 6148 6149 @Override 6150 public void onNestedScrollAccepted(View child, View target, int nestedScrollAxes) { 6151 } 6152 6153 @Override 6154 public void onNestedScroll(View target, int dxConsumed, int dyConsumed, 6155 int dxUnconsumed, int dyUnconsumed) { 6156 } 6157 6158 @Override 6159 public void onNestedPreScroll(View target, int dx, int dy, int[] consumed) { 6160 } 6161 6162 @Override 6163 public boolean onNestedFling(View target, float velocityX, float velocityY, boolean consumed) { 6164 return false; 6165 } 6166 6167 void changeCanvasOpacity(boolean opaque) { 6168 // TODO(romainguy): recreate Canvas (software or hardware) to reflect the opacity change. 6169 Log.d(TAG, "changeCanvasOpacity: opaque=" + opaque); 6170 } 6171 6172 class TakenSurfaceHolder extends BaseSurfaceHolder { 6173 @Override 6174 public boolean onAllowLockCanvas() { 6175 return mDrawingAllowed; 6176 } 6177 6178 @Override 6179 public void onRelayoutContainer() { 6180 // Not currently interesting -- from changing between fixed and layout size. 6181 } 6182 6183 @Override 6184 public void setFormat(int format) { 6185 ((RootViewSurfaceTaker)mView).setSurfaceFormat(format); 6186 } 6187 6188 @Override 6189 public void setType(int type) { 6190 ((RootViewSurfaceTaker)mView).setSurfaceType(type); 6191 } 6192 6193 @Override 6194 public void onUpdateSurface() { 6195 // We take care of format and type changes on our own. 6196 throw new IllegalStateException("Shouldn't be here"); 6197 } 6198 6199 @Override 6200 public boolean isCreating() { 6201 return mIsCreating; 6202 } 6203 6204 @Override 6205 public void setFixedSize(int width, int height) { 6206 throw new UnsupportedOperationException( 6207 "Currently only support sizing from layout"); 6208 } 6209 6210 @Override 6211 public void setKeepScreenOn(boolean screenOn) { 6212 ((RootViewSurfaceTaker)mView).setSurfaceKeepScreenOn(screenOn); 6213 } 6214 } 6215 6216 static class W extends IWindow.Stub { 6217 private final WeakReference<ViewRootImpl> mViewAncestor; 6218 private final IWindowSession mWindowSession; 6219 6220 W(ViewRootImpl viewAncestor) { 6221 mViewAncestor = new WeakReference<ViewRootImpl>(viewAncestor); 6222 mWindowSession = viewAncestor.mWindowSession; 6223 } 6224 6225 @Override 6226 public void resized(Rect frame, Rect overscanInsets, Rect contentInsets, 6227 Rect visibleInsets, boolean reportDraw, Configuration newConfig) { 6228 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6229 if (viewAncestor != null) { 6230 viewAncestor.dispatchResized(frame, overscanInsets, contentInsets, 6231 visibleInsets, reportDraw, newConfig); 6232 } 6233 } 6234 6235 @Override 6236 public void moved(int newX, int newY) { 6237 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6238 if (viewAncestor != null) { 6239 viewAncestor.dispatchMoved(newX, newY); 6240 } 6241 } 6242 6243 @Override 6244 public void dispatchAppVisibility(boolean visible) { 6245 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6246 if (viewAncestor != null) { 6247 viewAncestor.dispatchAppVisibility(visible); 6248 } 6249 } 6250 6251 @Override 6252 public void dispatchGetNewSurface() { 6253 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6254 if (viewAncestor != null) { 6255 viewAncestor.dispatchGetNewSurface(); 6256 } 6257 } 6258 6259 @Override 6260 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 6261 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6262 if (viewAncestor != null) { 6263 viewAncestor.windowFocusChanged(hasFocus, inTouchMode); 6264 } 6265 } 6266 6267 private static int checkCallingPermission(String permission) { 6268 try { 6269 return ActivityManagerNative.getDefault().checkPermission( 6270 permission, Binder.getCallingPid(), Binder.getCallingUid()); 6271 } catch (RemoteException e) { 6272 return PackageManager.PERMISSION_DENIED; 6273 } 6274 } 6275 6276 @Override 6277 public void executeCommand(String command, String parameters, ParcelFileDescriptor out) { 6278 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6279 if (viewAncestor != null) { 6280 final View view = viewAncestor.mView; 6281 if (view != null) { 6282 if (checkCallingPermission(Manifest.permission.DUMP) != 6283 PackageManager.PERMISSION_GRANTED) { 6284 throw new SecurityException("Insufficient permissions to invoke" 6285 + " executeCommand() from pid=" + Binder.getCallingPid() 6286 + ", uid=" + Binder.getCallingUid()); 6287 } 6288 6289 OutputStream clientStream = null; 6290 try { 6291 clientStream = new ParcelFileDescriptor.AutoCloseOutputStream(out); 6292 ViewDebug.dispatchCommand(view, command, parameters, clientStream); 6293 } catch (IOException e) { 6294 e.printStackTrace(); 6295 } finally { 6296 if (clientStream != null) { 6297 try { 6298 clientStream.close(); 6299 } catch (IOException e) { 6300 e.printStackTrace(); 6301 } 6302 } 6303 } 6304 } 6305 } 6306 } 6307 6308 @Override 6309 public void closeSystemDialogs(String reason) { 6310 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6311 if (viewAncestor != null) { 6312 viewAncestor.dispatchCloseSystemDialogs(reason); 6313 } 6314 } 6315 6316 @Override 6317 public void dispatchWallpaperOffsets(float x, float y, float xStep, float yStep, 6318 boolean sync) { 6319 if (sync) { 6320 try { 6321 mWindowSession.wallpaperOffsetsComplete(asBinder()); 6322 } catch (RemoteException e) { 6323 } 6324 } 6325 } 6326 6327 @Override 6328 public void dispatchWallpaperCommand(String action, int x, int y, 6329 int z, Bundle extras, boolean sync) { 6330 if (sync) { 6331 try { 6332 mWindowSession.wallpaperCommandComplete(asBinder(), null); 6333 } catch (RemoteException e) { 6334 } 6335 } 6336 } 6337 6338 /* Drag/drop */ 6339 @Override 6340 public void dispatchDragEvent(DragEvent event) { 6341 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6342 if (viewAncestor != null) { 6343 viewAncestor.dispatchDragEvent(event); 6344 } 6345 } 6346 6347 @Override 6348 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 6349 int localValue, int localChanges) { 6350 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6351 if (viewAncestor != null) { 6352 viewAncestor.dispatchSystemUiVisibilityChanged(seq, globalVisibility, 6353 localValue, localChanges); 6354 } 6355 } 6356 6357 @Override 6358 public void doneAnimating() { 6359 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6360 if (viewAncestor != null) { 6361 viewAncestor.dispatchDoneAnimating(); 6362 } 6363 } 6364 } 6365 6366 public static final class CalledFromWrongThreadException extends AndroidRuntimeException { 6367 public CalledFromWrongThreadException(String msg) { 6368 super(msg); 6369 } 6370 } 6371 6372 static RunQueue getRunQueue() { 6373 RunQueue rq = sRunQueues.get(); 6374 if (rq != null) { 6375 return rq; 6376 } 6377 rq = new RunQueue(); 6378 sRunQueues.set(rq); 6379 return rq; 6380 } 6381 6382 /** 6383 * The run queue is used to enqueue pending work from Views when no Handler is 6384 * attached. The work is executed during the next call to performTraversals on 6385 * the thread. 6386 * @hide 6387 */ 6388 static final class RunQueue { 6389 private final ArrayList<HandlerAction> mActions = new ArrayList<HandlerAction>(); 6390 6391 void post(Runnable action) { 6392 postDelayed(action, 0); 6393 } 6394 6395 void postDelayed(Runnable action, long delayMillis) { 6396 HandlerAction handlerAction = new HandlerAction(); 6397 handlerAction.action = action; 6398 handlerAction.delay = delayMillis; 6399 6400 synchronized (mActions) { 6401 mActions.add(handlerAction); 6402 } 6403 } 6404 6405 void removeCallbacks(Runnable action) { 6406 final HandlerAction handlerAction = new HandlerAction(); 6407 handlerAction.action = action; 6408 6409 synchronized (mActions) { 6410 final ArrayList<HandlerAction> actions = mActions; 6411 6412 while (actions.remove(handlerAction)) { 6413 // Keep going 6414 } 6415 } 6416 } 6417 6418 void executeActions(Handler handler) { 6419 synchronized (mActions) { 6420 final ArrayList<HandlerAction> actions = mActions; 6421 final int count = actions.size(); 6422 6423 for (int i = 0; i < count; i++) { 6424 final HandlerAction handlerAction = actions.get(i); 6425 handler.postDelayed(handlerAction.action, handlerAction.delay); 6426 } 6427 6428 actions.clear(); 6429 } 6430 } 6431 6432 private static class HandlerAction { 6433 Runnable action; 6434 long delay; 6435 6436 @Override 6437 public boolean equals(Object o) { 6438 if (this == o) return true; 6439 if (o == null || getClass() != o.getClass()) return false; 6440 6441 HandlerAction that = (HandlerAction) o; 6442 return !(action != null ? !action.equals(that.action) : that.action != null); 6443 6444 } 6445 6446 @Override 6447 public int hashCode() { 6448 int result = action != null ? action.hashCode() : 0; 6449 result = 31 * result + (int) (delay ^ (delay >>> 32)); 6450 return result; 6451 } 6452 } 6453 } 6454 6455 /** 6456 * Class for managing the accessibility interaction connection 6457 * based on the global accessibility state. 6458 */ 6459 final class AccessibilityInteractionConnectionManager 6460 implements AccessibilityStateChangeListener { 6461 @Override 6462 public void onAccessibilityStateChanged(boolean enabled) { 6463 if (enabled) { 6464 ensureConnection(); 6465 if (mAttachInfo != null && mAttachInfo.mHasWindowFocus) { 6466 mView.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 6467 View focusedView = mView.findFocus(); 6468 if (focusedView != null && focusedView != mView) { 6469 focusedView.sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_FOCUSED); 6470 } 6471 } 6472 } else { 6473 ensureNoConnection(); 6474 mHandler.obtainMessage(MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST).sendToTarget(); 6475 } 6476 } 6477 6478 public void ensureConnection() { 6479 if (mAttachInfo != null) { 6480 final boolean registered = 6481 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED_ITEM_ID; 6482 if (!registered) { 6483 mAttachInfo.mAccessibilityWindowId = 6484 mAccessibilityManager.addAccessibilityInteractionConnection(mWindow, 6485 new AccessibilityInteractionConnection(ViewRootImpl.this)); 6486 } 6487 } 6488 } 6489 6490 public void ensureNoConnection() { 6491 final boolean registered = 6492 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED_ITEM_ID; 6493 if (registered) { 6494 mAttachInfo.mAccessibilityWindowId = AccessibilityNodeInfo.UNDEFINED_ITEM_ID; 6495 mAccessibilityManager.removeAccessibilityInteractionConnection(mWindow); 6496 } 6497 } 6498 } 6499 6500 /** 6501 * This class is an interface this ViewAncestor provides to the 6502 * AccessibilityManagerService to the latter can interact with 6503 * the view hierarchy in this ViewAncestor. 6504 */ 6505 static final class AccessibilityInteractionConnection 6506 extends IAccessibilityInteractionConnection.Stub { 6507 private final WeakReference<ViewRootImpl> mViewRootImpl; 6508 6509 AccessibilityInteractionConnection(ViewRootImpl viewRootImpl) { 6510 mViewRootImpl = new WeakReference<ViewRootImpl>(viewRootImpl); 6511 } 6512 6513 @Override 6514 public void findAccessibilityNodeInfoByAccessibilityId(long accessibilityNodeId, 6515 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 6516 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6517 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6518 if (viewRootImpl != null && viewRootImpl.mView != null) { 6519 viewRootImpl.getAccessibilityInteractionController() 6520 .findAccessibilityNodeInfoByAccessibilityIdClientThread(accessibilityNodeId, 6521 interactionId, callback, flags, interrogatingPid, interrogatingTid, 6522 spec); 6523 } else { 6524 // We cannot make the call and notify the caller so it does not wait. 6525 try { 6526 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 6527 } catch (RemoteException re) { 6528 /* best effort - ignore */ 6529 } 6530 } 6531 } 6532 6533 @Override 6534 public void performAccessibilityAction(long accessibilityNodeId, int action, 6535 Bundle arguments, int interactionId, 6536 IAccessibilityInteractionConnectionCallback callback, int flags, 6537 int interogatingPid, long interrogatingTid) { 6538 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6539 if (viewRootImpl != null && viewRootImpl.mView != null) { 6540 viewRootImpl.getAccessibilityInteractionController() 6541 .performAccessibilityActionClientThread(accessibilityNodeId, action, arguments, 6542 interactionId, callback, flags, interogatingPid, interrogatingTid); 6543 } else { 6544 // We cannot make the call and notify the caller so it does not wait. 6545 try { 6546 callback.setPerformAccessibilityActionResult(false, interactionId); 6547 } catch (RemoteException re) { 6548 /* best effort - ignore */ 6549 } 6550 } 6551 } 6552 6553 @Override 6554 public void findAccessibilityNodeInfosByViewId(long accessibilityNodeId, 6555 String viewId, int interactionId, 6556 IAccessibilityInteractionConnectionCallback callback, int flags, 6557 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6558 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6559 if (viewRootImpl != null && viewRootImpl.mView != null) { 6560 viewRootImpl.getAccessibilityInteractionController() 6561 .findAccessibilityNodeInfosByViewIdClientThread(accessibilityNodeId, 6562 viewId, interactionId, callback, flags, interrogatingPid, 6563 interrogatingTid, spec); 6564 } else { 6565 // We cannot make the call and notify the caller so it does not wait. 6566 try { 6567 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6568 } catch (RemoteException re) { 6569 /* best effort - ignore */ 6570 } 6571 } 6572 } 6573 6574 @Override 6575 public void findAccessibilityNodeInfosByText(long accessibilityNodeId, String text, 6576 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 6577 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6578 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6579 if (viewRootImpl != null && viewRootImpl.mView != null) { 6580 viewRootImpl.getAccessibilityInteractionController() 6581 .findAccessibilityNodeInfosByTextClientThread(accessibilityNodeId, text, 6582 interactionId, callback, flags, interrogatingPid, interrogatingTid, 6583 spec); 6584 } else { 6585 // We cannot make the call and notify the caller so it does not wait. 6586 try { 6587 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 6588 } catch (RemoteException re) { 6589 /* best effort - ignore */ 6590 } 6591 } 6592 } 6593 6594 @Override 6595 public void findFocus(long accessibilityNodeId, int focusType, int interactionId, 6596 IAccessibilityInteractionConnectionCallback callback, int flags, 6597 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6598 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6599 if (viewRootImpl != null && viewRootImpl.mView != null) { 6600 viewRootImpl.getAccessibilityInteractionController() 6601 .findFocusClientThread(accessibilityNodeId, focusType, interactionId, callback, 6602 flags, interrogatingPid, interrogatingTid, spec); 6603 } else { 6604 // We cannot make the call and notify the caller so it does not wait. 6605 try { 6606 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6607 } catch (RemoteException re) { 6608 /* best effort - ignore */ 6609 } 6610 } 6611 } 6612 6613 @Override 6614 public void focusSearch(long accessibilityNodeId, int direction, int interactionId, 6615 IAccessibilityInteractionConnectionCallback callback, int flags, 6616 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6617 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6618 if (viewRootImpl != null && viewRootImpl.mView != null) { 6619 viewRootImpl.getAccessibilityInteractionController() 6620 .focusSearchClientThread(accessibilityNodeId, direction, interactionId, 6621 callback, flags, interrogatingPid, interrogatingTid, spec); 6622 } else { 6623 // We cannot make the call and notify the caller so it does not wait. 6624 try { 6625 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6626 } catch (RemoteException re) { 6627 /* best effort - ignore */ 6628 } 6629 } 6630 } 6631 } 6632 6633 private class SendWindowContentChangedAccessibilityEvent implements Runnable { 6634 private int mChangeTypes = 0; 6635 6636 public View mSource; 6637 public long mLastEventTimeMillis; 6638 6639 @Override 6640 public void run() { 6641 // The accessibility may be turned off while we were waiting so check again. 6642 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 6643 mLastEventTimeMillis = SystemClock.uptimeMillis(); 6644 AccessibilityEvent event = AccessibilityEvent.obtain(); 6645 event.setEventType(AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED); 6646 event.setContentChangeTypes(mChangeTypes); 6647 mSource.sendAccessibilityEventUnchecked(event); 6648 } else { 6649 mLastEventTimeMillis = 0; 6650 } 6651 // In any case reset to initial state. 6652 mSource.resetSubtreeAccessibilityStateChanged(); 6653 mSource = null; 6654 mChangeTypes = 0; 6655 } 6656 6657 public void runOrPost(View source, int changeType) { 6658 if (mSource != null) { 6659 // If there is no common predecessor, then mSource points to 6660 // a removed view, hence in this case always prefer the source. 6661 View predecessor = getCommonPredecessor(mSource, source); 6662 mSource = (predecessor != null) ? predecessor : source; 6663 mChangeTypes |= changeType; 6664 return; 6665 } 6666 mSource = source; 6667 mChangeTypes = changeType; 6668 final long timeSinceLastMillis = SystemClock.uptimeMillis() - mLastEventTimeMillis; 6669 final long minEventIntevalMillis = 6670 ViewConfiguration.getSendRecurringAccessibilityEventsInterval(); 6671 if (timeSinceLastMillis >= minEventIntevalMillis) { 6672 mSource.removeCallbacks(this); 6673 run(); 6674 } else { 6675 mSource.postDelayed(this, minEventIntevalMillis - timeSinceLastMillis); 6676 } 6677 } 6678 } 6679} 6680