ViewRootImpl.java revision 5182c780a8b42acd46a06d693ab63a0dd78c6d70
1/* 2 * Copyright (C) 2006 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.view; 18 19import android.Manifest; 20import android.animation.LayoutTransition; 21import android.app.ActivityManagerNative; 22import android.content.ClipDescription; 23import android.content.ComponentCallbacks; 24import android.content.ComponentCallbacks2; 25import android.content.Context; 26import android.content.pm.PackageManager; 27import android.content.res.CompatibilityInfo; 28import android.content.res.Configuration; 29import android.content.res.Resources; 30import android.graphics.Canvas; 31import android.graphics.Paint; 32import android.graphics.PixelFormat; 33import android.graphics.Point; 34import android.graphics.PointF; 35import android.graphics.PorterDuff; 36import android.graphics.Rect; 37import android.graphics.Region; 38import android.graphics.drawable.Drawable; 39import android.media.AudioManager; 40import android.os.Binder; 41import android.os.Bundle; 42import android.os.Debug; 43import android.os.Handler; 44import android.os.Looper; 45import android.os.Message; 46import android.os.ParcelFileDescriptor; 47import android.os.PowerManager; 48import android.os.Process; 49import android.os.RemoteException; 50import android.os.SystemClock; 51import android.os.SystemProperties; 52import android.os.Trace; 53import android.util.AndroidRuntimeException; 54import android.util.DisplayMetrics; 55import android.util.Log; 56import android.util.Slog; 57import android.util.TypedValue; 58import android.view.View.AttachInfo; 59import android.view.View.MeasureSpec; 60import android.view.accessibility.AccessibilityEvent; 61import android.view.accessibility.AccessibilityManager; 62import android.view.accessibility.AccessibilityManager.AccessibilityStateChangeListener; 63import android.view.accessibility.AccessibilityNodeInfo; 64import android.view.accessibility.AccessibilityNodeProvider; 65import android.view.accessibility.IAccessibilityInteractionConnection; 66import android.view.accessibility.IAccessibilityInteractionConnectionCallback; 67import android.view.animation.AccelerateDecelerateInterpolator; 68import android.view.animation.Interpolator; 69import android.view.inputmethod.InputConnection; 70import android.view.inputmethod.InputMethodManager; 71import android.view.Surface.OutOfResourcesException; 72import android.widget.Scroller; 73 74import com.android.internal.R; 75import com.android.internal.os.SomeArgs; 76import com.android.internal.policy.PolicyManager; 77import com.android.internal.view.BaseSurfaceHolder; 78import com.android.internal.view.RootViewSurfaceTaker; 79 80import java.io.FileDescriptor; 81import java.io.IOException; 82import java.io.OutputStream; 83import java.io.PrintWriter; 84import java.lang.ref.WeakReference; 85import java.util.ArrayList; 86import java.util.HashSet; 87 88/** 89 * The top of a view hierarchy, implementing the needed protocol between View 90 * and the WindowManager. This is for the most part an internal implementation 91 * detail of {@link WindowManagerGlobal}. 92 * 93 * {@hide} 94 */ 95@SuppressWarnings({"EmptyCatchBlock", "PointlessBooleanExpression"}) 96public final class ViewRootImpl implements ViewParent, 97 View.AttachInfo.Callbacks, HardwareRenderer.HardwareDrawCallbacks { 98 private static final String TAG = "ViewRootImpl"; 99 private static final boolean DBG = false; 100 private static final boolean LOCAL_LOGV = false; 101 /** @noinspection PointlessBooleanExpression*/ 102 private static final boolean DEBUG_DRAW = false || LOCAL_LOGV; 103 private static final boolean DEBUG_LAYOUT = false || LOCAL_LOGV; 104 private static final boolean DEBUG_DIALOG = false || LOCAL_LOGV; 105 private static final boolean DEBUG_INPUT_RESIZE = false || LOCAL_LOGV; 106 private static final boolean DEBUG_ORIENTATION = false || LOCAL_LOGV; 107 private static final boolean DEBUG_TRACKBALL = false || LOCAL_LOGV; 108 private static final boolean DEBUG_IMF = false || LOCAL_LOGV; 109 private static final boolean DEBUG_CONFIGURATION = false || LOCAL_LOGV; 110 private static final boolean DEBUG_FPS = false; 111 private static final boolean DEBUG_INPUT_PROCESSING = false || LOCAL_LOGV; 112 113 /** 114 * Set this system property to true to force the view hierarchy to render 115 * at 60 Hz. This can be used to measure the potential framerate. 116 */ 117 private static final String PROPERTY_PROFILE_RENDERING = "viewroot.profile_rendering"; 118 private static final String PROPERTY_MEDIA_DISABLED = "config.disable_media"; 119 120 /** 121 * Maximum time we allow the user to roll the trackball enough to generate 122 * a key event, before resetting the counters. 123 */ 124 static final int MAX_TRACKBALL_DELAY = 250; 125 126 static final ThreadLocal<RunQueue> sRunQueues = new ThreadLocal<RunQueue>(); 127 128 static final ArrayList<Runnable> sFirstDrawHandlers = new ArrayList<Runnable>(); 129 static boolean sFirstDrawComplete = false; 130 131 static final ArrayList<ComponentCallbacks> sConfigCallbacks 132 = new ArrayList<ComponentCallbacks>(); 133 134 final Context mContext; 135 final IWindowSession mWindowSession; 136 final Display mDisplay; 137 final String mBasePackageName; 138 139 final int[] mTmpLocation = new int[2]; 140 141 final TypedValue mTmpValue = new TypedValue(); 142 143 final Thread mThread; 144 145 final WindowLeaked mLocation; 146 147 final WindowManager.LayoutParams mWindowAttributes = new WindowManager.LayoutParams(); 148 149 final W mWindow; 150 151 final int mTargetSdkVersion; 152 153 int mSeq; 154 155 View mView; 156 157 View mAccessibilityFocusedHost; 158 AccessibilityNodeInfo mAccessibilityFocusedVirtualView; 159 160 int mViewVisibility; 161 boolean mAppVisible = true; 162 int mOrigWindowType = -1; 163 164 // Set to true if the owner of this window is in the stopped state, 165 // so the window should no longer be active. 166 boolean mStopped = false; 167 168 boolean mLastInCompatMode = false; 169 170 SurfaceHolder.Callback2 mSurfaceHolderCallback; 171 BaseSurfaceHolder mSurfaceHolder; 172 boolean mIsCreating; 173 boolean mDrawingAllowed; 174 175 final Region mTransparentRegion; 176 final Region mPreviousTransparentRegion; 177 178 int mWidth; 179 int mHeight; 180 Rect mDirty; 181 final Rect mCurrentDirty = new Rect(); 182 boolean mIsAnimating; 183 184 CompatibilityInfo.Translator mTranslator; 185 186 final View.AttachInfo mAttachInfo; 187 InputChannel mInputChannel; 188 InputQueue.Callback mInputQueueCallback; 189 InputQueue mInputQueue; 190 FallbackEventHandler mFallbackEventHandler; 191 Choreographer mChoreographer; 192 193 final Rect mTempRect; // used in the transaction to not thrash the heap. 194 final Rect mVisRect; // used to retrieve visible rect of focused view. 195 196 boolean mTraversalScheduled; 197 int mTraversalBarrier; 198 boolean mWillDrawSoon; 199 /** Set to true while in performTraversals for detecting when die(true) is called from internal 200 * callbacks such as onMeasure, onPreDraw, onDraw and deferring doDie() until later. */ 201 boolean mIsInTraversal; 202 boolean mFitSystemWindowsRequested; 203 boolean mLayoutRequested; 204 boolean mFirst; 205 boolean mReportNextDraw; 206 boolean mFullRedrawNeeded; 207 boolean mNewSurfaceNeeded; 208 boolean mHasHadWindowFocus; 209 boolean mLastWasImTarget; 210 boolean mWindowsAnimating; 211 boolean mDrawDuringWindowsAnimating; 212 boolean mIsDrawing; 213 int mLastSystemUiVisibility; 214 int mClientWindowLayoutFlags; 215 boolean mLastOverscanRequested; 216 217 // Pool of queued input events. 218 private static final int MAX_QUEUED_INPUT_EVENT_POOL_SIZE = 10; 219 private QueuedInputEvent mQueuedInputEventPool; 220 private int mQueuedInputEventPoolSize; 221 222 /* Input event queue. 223 * Pending input events are input events waiting to be delivered to the input stages 224 * and handled by the application. 225 */ 226 QueuedInputEvent mPendingInputEventHead; 227 QueuedInputEvent mPendingInputEventTail; 228 int mPendingInputEventCount; 229 boolean mProcessInputEventsScheduled; 230 String mPendingInputEventQueueLengthCounterName = "pq"; 231 232 InputStage mFirstInputStage; 233 InputStage mFirstPostImeInputStage; 234 235 boolean mFlipControllerFallbackKeys; 236 237 boolean mWindowAttributesChanged = false; 238 int mWindowAttributesChangesFlag = 0; 239 240 // These can be accessed by any thread, must be protected with a lock. 241 // Surface can never be reassigned or cleared (use Surface.clear()). 242 private final Surface mSurface = new Surface(); 243 244 boolean mAdded; 245 boolean mAddedTouchMode; 246 247 final DisplayAdjustments mDisplayAdjustments; 248 249 // These are accessed by multiple threads. 250 final Rect mWinFrame; // frame given by window manager. 251 252 final Rect mPendingOverscanInsets = new Rect(); 253 final Rect mPendingVisibleInsets = new Rect(); 254 final Rect mPendingContentInsets = new Rect(); 255 final ViewTreeObserver.InternalInsetsInfo mLastGivenInsets 256 = new ViewTreeObserver.InternalInsetsInfo(); 257 258 final Rect mFitSystemWindowsInsets = new Rect(); 259 260 final Configuration mLastConfiguration = new Configuration(); 261 final Configuration mPendingConfiguration = new Configuration(); 262 263 boolean mScrollMayChange; 264 int mSoftInputMode; 265 WeakReference<View> mLastScrolledFocus; 266 int mScrollY; 267 int mCurScrollY; 268 Scroller mScroller; 269 HardwareLayer mResizeBuffer; 270 long mResizeBufferStartTime; 271 int mResizeBufferDuration; 272 static final Interpolator mResizeInterpolator = new AccelerateDecelerateInterpolator(); 273 private ArrayList<LayoutTransition> mPendingTransitions; 274 275 final ViewConfiguration mViewConfiguration; 276 277 /* Drag/drop */ 278 ClipDescription mDragDescription; 279 View mCurrentDragView; 280 volatile Object mLocalDragState; 281 final PointF mDragPoint = new PointF(); 282 final PointF mLastTouchPoint = new PointF(); 283 284 private boolean mProfileRendering; 285 private Choreographer.FrameCallback mRenderProfiler; 286 private boolean mRenderProfilingEnabled; 287 288 private boolean mMediaDisabled; 289 290 // Variables to track frames per second, enabled via DEBUG_FPS flag 291 private long mFpsStartTime = -1; 292 private long mFpsPrevTime = -1; 293 private int mFpsNumFrames; 294 295 private final ArrayList<DisplayList> mDisplayLists = new ArrayList<DisplayList>(); 296 297 /** 298 * see {@link #playSoundEffect(int)} 299 */ 300 AudioManager mAudioManager; 301 302 final AccessibilityManager mAccessibilityManager; 303 304 AccessibilityInteractionController mAccessibilityInteractionController; 305 306 AccessibilityInteractionConnectionManager mAccessibilityInteractionConnectionManager; 307 308 SendWindowContentChangedAccessibilityEvent mSendWindowContentChangedAccessibilityEvent; 309 310 HashSet<View> mTempHashSet; 311 312 private final int mDensity; 313 private final int mNoncompatDensity; 314 315 private boolean mInLayout = false; 316 ArrayList<View> mLayoutRequesters = new ArrayList<View>(); 317 boolean mHandlingLayoutInLayoutRequest = false; 318 319 private int mViewLayoutDirectionInitial; 320 321 /** Set to true once doDie() has been called. */ 322 private boolean mRemoved; 323 324 /** 325 * Consistency verifier for debugging purposes. 326 */ 327 protected final InputEventConsistencyVerifier mInputEventConsistencyVerifier = 328 InputEventConsistencyVerifier.isInstrumentationEnabled() ? 329 new InputEventConsistencyVerifier(this, 0) : null; 330 331 static final class SystemUiVisibilityInfo { 332 int seq; 333 int globalVisibility; 334 int localValue; 335 int localChanges; 336 } 337 338 public ViewRootImpl(Context context, Display display) { 339 mContext = context; 340 mWindowSession = WindowManagerGlobal.getWindowSession(); 341 mDisplay = display; 342 mBasePackageName = context.getBasePackageName(); 343 344 mDisplayAdjustments = display.getDisplayAdjustments(); 345 346 mThread = Thread.currentThread(); 347 mLocation = new WindowLeaked(null); 348 mLocation.fillInStackTrace(); 349 mWidth = -1; 350 mHeight = -1; 351 mDirty = new Rect(); 352 mTempRect = new Rect(); 353 mVisRect = new Rect(); 354 mWinFrame = new Rect(); 355 mWindow = new W(this); 356 mTargetSdkVersion = context.getApplicationInfo().targetSdkVersion; 357 mViewVisibility = View.GONE; 358 mTransparentRegion = new Region(); 359 mPreviousTransparentRegion = new Region(); 360 mFirst = true; // true for the first time the view is added 361 mAdded = false; 362 mAccessibilityManager = AccessibilityManager.getInstance(context); 363 mAccessibilityInteractionConnectionManager = 364 new AccessibilityInteractionConnectionManager(); 365 mAccessibilityManager.addAccessibilityStateChangeListener( 366 mAccessibilityInteractionConnectionManager); 367 mAttachInfo = new View.AttachInfo(mWindowSession, mWindow, display, this, mHandler, this); 368 mViewConfiguration = ViewConfiguration.get(context); 369 mDensity = context.getResources().getDisplayMetrics().densityDpi; 370 mNoncompatDensity = context.getResources().getDisplayMetrics().noncompatDensityDpi; 371 mFallbackEventHandler = PolicyManager.makeNewFallbackEventHandler(context); 372 mChoreographer = Choreographer.getInstance(); 373 mFlipControllerFallbackKeys = 374 context.getResources().getBoolean(R.bool.flip_controller_fallback_keys); 375 376 PowerManager powerManager = (PowerManager) context.getSystemService(Context.POWER_SERVICE); 377 mAttachInfo.mScreenOn = powerManager.isScreenOn(); 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 mViewLayoutDirectionInitial = mView.getRawLayoutDirection(); 433 mFallbackEventHandler.setView(view); 434 mWindowAttributes.copyFrom(attrs); 435 if (mWindowAttributes.packageName == null) { 436 mWindowAttributes.packageName = mBasePackageName; 437 } 438 attrs = mWindowAttributes; 439 // Keep track of the actual window flags supplied by the client. 440 mClientWindowLayoutFlags = attrs.flags; 441 442 setAccessibilityFocus(null, null); 443 444 if (view instanceof RootViewSurfaceTaker) { 445 mSurfaceHolderCallback = 446 ((RootViewSurfaceTaker)view).willYouTakeTheSurface(); 447 if (mSurfaceHolderCallback != null) { 448 mSurfaceHolder = new TakenSurfaceHolder(); 449 mSurfaceHolder.setFormat(PixelFormat.UNKNOWN); 450 } 451 } 452 453 CompatibilityInfo compatibilityInfo = mDisplayAdjustments.getCompatibilityInfo(); 454 mTranslator = compatibilityInfo.getTranslator(); 455 mDisplayAdjustments.setActivityToken(attrs.token); 456 457 // If the application owns the surface, don't enable hardware acceleration 458 if (mSurfaceHolder == null) { 459 enableHardwareAcceleration(attrs); 460 } 461 462 boolean restore = false; 463 if (mTranslator != null) { 464 mSurface.setCompatibilityTranslator(mTranslator); 465 restore = true; 466 attrs.backup(); 467 mTranslator.translateWindowLayout(attrs); 468 } 469 if (DEBUG_LAYOUT) Log.d(TAG, "WindowLayout in setView:" + attrs); 470 471 if (!compatibilityInfo.supportsScreen()) { 472 attrs.privateFlags |= WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 473 mLastInCompatMode = true; 474 } 475 476 mSoftInputMode = attrs.softInputMode; 477 mWindowAttributesChanged = true; 478 mWindowAttributesChangesFlag = WindowManager.LayoutParams.EVERYTHING_CHANGED; 479 mAttachInfo.mRootView = view; 480 mAttachInfo.mScalingRequired = mTranslator != null; 481 mAttachInfo.mApplicationScale = 482 mTranslator == null ? 1.0f : mTranslator.applicationScale; 483 if (panelParentView != null) { 484 mAttachInfo.mPanelParentWindowToken 485 = panelParentView.getApplicationWindowToken(); 486 } 487 mAdded = true; 488 int res; /* = WindowManagerImpl.ADD_OKAY; */ 489 490 // Schedule the first layout -before- adding to the window 491 // manager, to make sure we do the relayout before receiving 492 // any other events from the system. 493 requestLayout(); 494 if ((mWindowAttributes.inputFeatures 495 & WindowManager.LayoutParams.INPUT_FEATURE_NO_INPUT_CHANNEL) == 0) { 496 mInputChannel = new InputChannel(); 497 } 498 try { 499 mOrigWindowType = mWindowAttributes.type; 500 mAttachInfo.mRecomputeGlobalAttributes = true; 501 collectViewAttributes(); 502 res = mWindowSession.addToDisplay(mWindow, mSeq, mWindowAttributes, 503 getHostVisibility(), mDisplay.getDisplayId(), 504 mAttachInfo.mContentInsets, mInputChannel); 505 } catch (RemoteException e) { 506 mAdded = false; 507 mView = null; 508 mAttachInfo.mRootView = null; 509 mInputChannel = null; 510 mFallbackEventHandler.setView(null); 511 unscheduleTraversals(); 512 setAccessibilityFocus(null, null); 513 throw new RuntimeException("Adding window failed", e); 514 } finally { 515 if (restore) { 516 attrs.restore(); 517 } 518 } 519 520 if (mTranslator != null) { 521 mTranslator.translateRectInScreenToAppWindow(mAttachInfo.mContentInsets); 522 } 523 mPendingOverscanInsets.set(0, 0, 0, 0); 524 mPendingContentInsets.set(mAttachInfo.mContentInsets); 525 mPendingVisibleInsets.set(0, 0, 0, 0); 526 if (DEBUG_LAYOUT) Log.v(TAG, "Added window " + mWindow); 527 if (res < WindowManagerGlobal.ADD_OKAY) { 528 mAttachInfo.mRootView = null; 529 mAdded = false; 530 mFallbackEventHandler.setView(null); 531 unscheduleTraversals(); 532 setAccessibilityFocus(null, null); 533 switch (res) { 534 case WindowManagerGlobal.ADD_BAD_APP_TOKEN: 535 case WindowManagerGlobal.ADD_BAD_SUBWINDOW_TOKEN: 536 throw new WindowManager.BadTokenException( 537 "Unable to add window -- token " + attrs.token 538 + " is not valid; is your activity running?"); 539 case WindowManagerGlobal.ADD_NOT_APP_TOKEN: 540 throw new WindowManager.BadTokenException( 541 "Unable to add window -- token " + attrs.token 542 + " is not for an application"); 543 case WindowManagerGlobal.ADD_APP_EXITING: 544 throw new WindowManager.BadTokenException( 545 "Unable to add window -- app for token " + attrs.token 546 + " is exiting"); 547 case WindowManagerGlobal.ADD_DUPLICATE_ADD: 548 throw new WindowManager.BadTokenException( 549 "Unable to add window -- window " + mWindow 550 + " has already been added"); 551 case WindowManagerGlobal.ADD_STARTING_NOT_NEEDED: 552 // Silently ignore -- we would have just removed it 553 // right away, anyway. 554 return; 555 case WindowManagerGlobal.ADD_MULTIPLE_SINGLETON: 556 throw new WindowManager.BadTokenException( 557 "Unable to add window " + mWindow + 558 " -- another window of this type already exists"); 559 case WindowManagerGlobal.ADD_PERMISSION_DENIED: 560 throw new WindowManager.BadTokenException( 561 "Unable to add window " + mWindow + 562 " -- permission denied for this window type"); 563 case WindowManagerGlobal.ADD_INVALID_DISPLAY: 564 throw new WindowManager.InvalidDisplayException( 565 "Unable to add window " + mWindow + 566 " -- the specified display can not be found"); 567 } 568 throw new RuntimeException( 569 "Unable to add window -- unknown error code " + res); 570 } 571 572 if (view instanceof RootViewSurfaceTaker) { 573 mInputQueueCallback = 574 ((RootViewSurfaceTaker)view).willYouTakeTheInputQueue(); 575 } 576 if (mInputChannel != null) { 577 if (mInputQueueCallback != null) { 578 mInputQueue = new InputQueue(); 579 mInputQueueCallback.onInputQueueCreated(mInputQueue); 580 } 581 mInputEventReceiver = new WindowInputEventReceiver(mInputChannel, 582 Looper.myLooper()); 583 } 584 585 view.assignParent(this); 586 mAddedTouchMode = (res & WindowManagerGlobal.ADD_FLAG_IN_TOUCH_MODE) != 0; 587 mAppVisible = (res & WindowManagerGlobal.ADD_FLAG_APP_VISIBLE) != 0; 588 589 if (mAccessibilityManager.isEnabled()) { 590 mAccessibilityInteractionConnectionManager.ensureConnection(); 591 } 592 593 if (view.getImportantForAccessibility() == View.IMPORTANT_FOR_ACCESSIBILITY_AUTO) { 594 view.setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_YES); 595 } 596 597 // Set up the input pipeline. 598 CharSequence counterSuffix = attrs.getTitle(); 599 InputStage syntheticInputStage = new SyntheticInputStage(); 600 InputStage viewPostImeStage = new ViewPostImeInputStage(syntheticInputStage); 601 InputStage nativePostImeStage = new NativePostImeInputStage(viewPostImeStage, 602 "aq:native-post-ime:" + counterSuffix); 603 InputStage earlyPostImeStage = new EarlyPostImeInputStage(nativePostImeStage); 604 InputStage imeStage = new ImeInputStage(earlyPostImeStage, 605 "aq:ime:" + counterSuffix); 606 InputStage viewPreImeStage = new ViewPreImeInputStage(imeStage); 607 InputStage nativePreImeStage = new NativePreImeInputStage(viewPreImeStage, 608 "aq:native-pre-ime:" + counterSuffix); 609 610 mFirstInputStage = nativePreImeStage; 611 mFirstPostImeInputStage = earlyPostImeStage; 612 mPendingInputEventQueueLengthCounterName = "aq:pending:" + counterSuffix; 613 } 614 } 615 } 616 617 /** Whether the window is in local focus mode or not */ 618 private boolean isInLocalFocusMode() { 619 return (mWindowAttributes.flags & WindowManager.LayoutParams.FLAG_LOCAL_FOCUS_MODE) != 0; 620 } 621 622 void destroyHardwareResources() { 623 invalidateDisplayLists(); 624 if (mAttachInfo.mHardwareRenderer != null) { 625 mAttachInfo.mHardwareRenderer.destroyHardwareResources(mView); 626 mAttachInfo.mHardwareRenderer.destroy(false); 627 } 628 } 629 630 void destroyHardwareLayers() { 631 if (mThread != Thread.currentThread()) { 632 if (mAttachInfo.mHardwareRenderer != null && 633 mAttachInfo.mHardwareRenderer.isEnabled()) { 634 HardwareRenderer.trimMemory(ComponentCallbacks2.TRIM_MEMORY_MODERATE); 635 } 636 } else { 637 invalidateDisplayLists(); 638 if (mAttachInfo.mHardwareRenderer != null && 639 mAttachInfo.mHardwareRenderer.isEnabled()) { 640 mAttachInfo.mHardwareRenderer.destroyLayers(mView); 641 } 642 } 643 } 644 645 void pushHardwareLayerUpdate(HardwareLayer layer) { 646 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled()) { 647 mAttachInfo.mHardwareRenderer.pushLayerUpdate(layer); 648 } 649 } 650 651 void flushHardwareLayerUpdates() { 652 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled() && 653 mAttachInfo.mHardwareRenderer.validate()) { 654 mAttachInfo.mHardwareRenderer.flushLayerUpdates(); 655 } 656 } 657 658 void dispatchFlushHardwareLayerUpdates() { 659 mHandler.removeMessages(MSG_FLUSH_LAYER_UPDATES); 660 mHandler.sendMessageAtFrontOfQueue(mHandler.obtainMessage(MSG_FLUSH_LAYER_UPDATES)); 661 } 662 663 public boolean attachFunctor(int functor) { 664 //noinspection SimplifiableIfStatement 665 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled()) { 666 return mAttachInfo.mHardwareRenderer.attachFunctor(mAttachInfo, functor); 667 } 668 return false; 669 } 670 671 public void detachFunctor(int functor) { 672 if (mAttachInfo.mHardwareRenderer != null) { 673 mAttachInfo.mHardwareRenderer.detachFunctor(functor); 674 } 675 } 676 677 private void enableHardwareAcceleration(WindowManager.LayoutParams attrs) { 678 mAttachInfo.mHardwareAccelerated = false; 679 mAttachInfo.mHardwareAccelerationRequested = false; 680 681 // Don't enable hardware acceleration when the application is in compatibility mode 682 if (mTranslator != null) return; 683 684 // Try to enable hardware acceleration if requested 685 final boolean hardwareAccelerated = 686 (attrs.flags & WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED) != 0; 687 688 if (hardwareAccelerated) { 689 if (!HardwareRenderer.isAvailable()) { 690 return; 691 } 692 693 // Persistent processes (including the system) should not do 694 // accelerated rendering on low-end devices. In that case, 695 // sRendererDisabled will be set. In addition, the system process 696 // itself should never do accelerated rendering. In that case, both 697 // sRendererDisabled and sSystemRendererDisabled are set. When 698 // sSystemRendererDisabled is set, PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED 699 // can be used by code on the system process to escape that and enable 700 // HW accelerated drawing. (This is basically for the lock screen.) 701 702 final boolean fakeHwAccelerated = (attrs.privateFlags & 703 WindowManager.LayoutParams.PRIVATE_FLAG_FAKE_HARDWARE_ACCELERATED) != 0; 704 final boolean forceHwAccelerated = (attrs.privateFlags & 705 WindowManager.LayoutParams.PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED) != 0; 706 707 if (!HardwareRenderer.sRendererDisabled || (HardwareRenderer.sSystemRendererDisabled 708 && forceHwAccelerated)) { 709 // Don't enable hardware acceleration when we're not on the main thread 710 if (!HardwareRenderer.sSystemRendererDisabled && 711 Looper.getMainLooper() != Looper.myLooper()) { 712 Log.w(HardwareRenderer.LOG_TAG, "Attempting to initialize hardware " 713 + "acceleration outside of the main thread, aborting"); 714 return; 715 } 716 717 if (mAttachInfo.mHardwareRenderer != null) { 718 mAttachInfo.mHardwareRenderer.destroy(true); 719 } 720 721 final boolean translucent = attrs.format != PixelFormat.OPAQUE; 722 mAttachInfo.mHardwareRenderer = HardwareRenderer.createGlRenderer(2, translucent); 723 if (mAttachInfo.mHardwareRenderer != null) { 724 mAttachInfo.mHardwareRenderer.setName(attrs.getTitle().toString()); 725 mAttachInfo.mHardwareAccelerated = 726 mAttachInfo.mHardwareAccelerationRequested = true; 727 } 728 } else if (fakeHwAccelerated) { 729 // The window had wanted to use hardware acceleration, but this 730 // is not allowed in its process. By setting this flag, it can 731 // still render as if it was accelerated. This is basically for 732 // the preview windows the window manager shows for launching 733 // applications, so they will look more like the app being launched. 734 mAttachInfo.mHardwareAccelerationRequested = true; 735 } 736 } 737 } 738 739 public View getView() { 740 return mView; 741 } 742 743 final WindowLeaked getLocation() { 744 return mLocation; 745 } 746 747 void setLayoutParams(WindowManager.LayoutParams attrs, boolean newView) { 748 synchronized (this) { 749 int oldSoftInputMode = mWindowAttributes.softInputMode; 750 // Keep track of the actual window flags supplied by the client. 751 mClientWindowLayoutFlags = attrs.flags; 752 // preserve compatible window flag if exists. 753 int compatibleWindowFlag = mWindowAttributes.privateFlags 754 & WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 755 // transfer over system UI visibility values as they carry current state. 756 attrs.systemUiVisibility = mWindowAttributes.systemUiVisibility; 757 attrs.subtreeSystemUiVisibility = mWindowAttributes.subtreeSystemUiVisibility; 758 mWindowAttributesChangesFlag = mWindowAttributes.copyFrom(attrs); 759 if ((mWindowAttributesChangesFlag 760 & WindowManager.LayoutParams.TRANSLUCENT_FLAGS_CHANGED) != 0) { 761 // Recompute system ui visibility. 762 mAttachInfo.mRecomputeGlobalAttributes = true; 763 } 764 if (mWindowAttributes.packageName == null) { 765 mWindowAttributes.packageName = mBasePackageName; 766 } 767 mWindowAttributes.privateFlags |= compatibleWindowFlag; 768 769 applyKeepScreenOnFlag(mWindowAttributes); 770 771 if (newView) { 772 mSoftInputMode = attrs.softInputMode; 773 requestLayout(); 774 } 775 // Don't lose the mode we last auto-computed. 776 if ((attrs.softInputMode&WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 777 == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 778 mWindowAttributes.softInputMode = (mWindowAttributes.softInputMode 779 & ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 780 | (oldSoftInputMode 781 & WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST); 782 } 783 mWindowAttributesChanged = true; 784 scheduleTraversals(); 785 } 786 } 787 788 void handleAppVisibility(boolean visible) { 789 if (mAppVisible != visible) { 790 mAppVisible = visible; 791 scheduleTraversals(); 792 } 793 } 794 795 void handleGetNewSurface() { 796 mNewSurfaceNeeded = true; 797 mFullRedrawNeeded = true; 798 scheduleTraversals(); 799 } 800 801 void handleScreenStateChange(boolean on) { 802 if (on != mAttachInfo.mScreenOn) { 803 mAttachInfo.mScreenOn = on; 804 if (mView != null) { 805 mView.dispatchScreenStateChanged(on ? View.SCREEN_STATE_ON : View.SCREEN_STATE_OFF); 806 } 807 if (on) { 808 mFullRedrawNeeded = true; 809 scheduleTraversals(); 810 } 811 } 812 } 813 814 @Override 815 public void requestFitSystemWindows() { 816 checkThread(); 817 mFitSystemWindowsRequested = true; 818 scheduleTraversals(); 819 } 820 821 @Override 822 public void requestLayout() { 823 if (!mHandlingLayoutInLayoutRequest) { 824 checkThread(); 825 mLayoutRequested = true; 826 scheduleTraversals(); 827 } 828 } 829 830 @Override 831 public boolean isLayoutRequested() { 832 return mLayoutRequested; 833 } 834 835 void invalidate() { 836 mDirty.set(0, 0, mWidth, mHeight); 837 scheduleTraversals(); 838 } 839 840 void invalidateWorld(View view) { 841 view.invalidate(); 842 if (view instanceof ViewGroup) { 843 ViewGroup parent = (ViewGroup) view; 844 for (int i = 0; i < parent.getChildCount(); i++) { 845 invalidateWorld(parent.getChildAt(i)); 846 } 847 } 848 } 849 850 @Override 851 public void invalidateChild(View child, Rect dirty) { 852 invalidateChildInParent(null, dirty); 853 } 854 855 @Override 856 public ViewParent invalidateChildInParent(int[] location, Rect dirty) { 857 checkThread(); 858 if (DEBUG_DRAW) Log.v(TAG, "Invalidate child: " + dirty); 859 860 if (dirty == null) { 861 invalidate(); 862 return null; 863 } else if (dirty.isEmpty() && !mIsAnimating) { 864 return null; 865 } 866 867 if (mCurScrollY != 0 || mTranslator != null) { 868 mTempRect.set(dirty); 869 dirty = mTempRect; 870 if (mCurScrollY != 0) { 871 dirty.offset(0, -mCurScrollY); 872 } 873 if (mTranslator != null) { 874 mTranslator.translateRectInAppWindowToScreen(dirty); 875 } 876 if (mAttachInfo.mScalingRequired) { 877 dirty.inset(-1, -1); 878 } 879 } 880 881 final Rect localDirty = mDirty; 882 if (!localDirty.isEmpty() && !localDirty.contains(dirty)) { 883 mAttachInfo.mSetIgnoreDirtyState = true; 884 mAttachInfo.mIgnoreDirtyState = true; 885 } 886 887 // Add the new dirty rect to the current one 888 localDirty.union(dirty.left, dirty.top, dirty.right, dirty.bottom); 889 // Intersect with the bounds of the window to skip 890 // updates that lie outside of the visible region 891 final float appScale = mAttachInfo.mApplicationScale; 892 final boolean intersected = localDirty.intersect(0, 0, 893 (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 894 if (!intersected) { 895 localDirty.setEmpty(); 896 } 897 if (!mWillDrawSoon && (intersected || mIsAnimating)) { 898 scheduleTraversals(); 899 } 900 901 return null; 902 } 903 904 void setStopped(boolean stopped) { 905 if (mStopped != stopped) { 906 mStopped = stopped; 907 if (!stopped) { 908 scheduleTraversals(); 909 } 910 } 911 } 912 913 @Override 914 public ViewParent getParent() { 915 return null; 916 } 917 918 @Override 919 public boolean getChildVisibleRect(View child, Rect r, android.graphics.Point offset) { 920 if (child != mView) { 921 throw new RuntimeException("child is not mine, honest!"); 922 } 923 // Note: don't apply scroll offset, because we want to know its 924 // visibility in the virtual canvas being given to the view hierarchy. 925 return r.intersect(0, 0, mWidth, mHeight); 926 } 927 928 @Override 929 public void bringChildToFront(View child) { 930 } 931 932 int getHostVisibility() { 933 return mAppVisible ? mView.getVisibility() : View.GONE; 934 } 935 936 void disposeResizeBuffer() { 937 if (mResizeBuffer != null && mAttachInfo.mHardwareRenderer != null) { 938 mAttachInfo.mHardwareRenderer.safelyRun(new Runnable() { 939 @Override 940 public void run() { 941 mResizeBuffer.destroy(); 942 mResizeBuffer = null; 943 } 944 }); 945 } 946 } 947 948 /** 949 * Add LayoutTransition to the list of transitions to be started in the next traversal. 950 * This list will be cleared after the transitions on the list are start()'ed. These 951 * transitionsa re added by LayoutTransition itself when it sets up animations. The setup 952 * happens during the layout phase of traversal, which we want to complete before any of the 953 * animations are started (because those animations may side-effect properties that layout 954 * depends upon, like the bounding rectangles of the affected views). So we add the transition 955 * to the list and it is started just prior to starting the drawing phase of traversal. 956 * 957 * @param transition The LayoutTransition to be started on the next traversal. 958 * 959 * @hide 960 */ 961 public void requestTransitionStart(LayoutTransition transition) { 962 if (mPendingTransitions == null || !mPendingTransitions.contains(transition)) { 963 if (mPendingTransitions == null) { 964 mPendingTransitions = new ArrayList<LayoutTransition>(); 965 } 966 mPendingTransitions.add(transition); 967 } 968 } 969 970 void scheduleTraversals() { 971 if (!mTraversalScheduled) { 972 mTraversalScheduled = true; 973 mTraversalBarrier = mHandler.getLooper().postSyncBarrier(); 974 mChoreographer.postCallback( 975 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 976 scheduleConsumeBatchedInput(); 977 } 978 } 979 980 void unscheduleTraversals() { 981 if (mTraversalScheduled) { 982 mTraversalScheduled = false; 983 mHandler.getLooper().removeSyncBarrier(mTraversalBarrier); 984 mChoreographer.removeCallbacks( 985 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 986 } 987 } 988 989 void doTraversal() { 990 if (mTraversalScheduled) { 991 mTraversalScheduled = false; 992 mHandler.getLooper().removeSyncBarrier(mTraversalBarrier); 993 994 if (mProfile) { 995 Debug.startMethodTracing("ViewAncestor"); 996 } 997 998 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "performTraversals"); 999 try { 1000 performTraversals(); 1001 } finally { 1002 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 1003 } 1004 1005 if (mProfile) { 1006 Debug.stopMethodTracing(); 1007 mProfile = false; 1008 } 1009 } 1010 } 1011 1012 private void applyKeepScreenOnFlag(WindowManager.LayoutParams params) { 1013 // Update window's global keep screen on flag: if a view has requested 1014 // that the screen be kept on, then it is always set; otherwise, it is 1015 // set to whatever the client last requested for the global state. 1016 if (mAttachInfo.mKeepScreenOn) { 1017 params.flags |= WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON; 1018 } else { 1019 params.flags = (params.flags&~WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON) 1020 | (mClientWindowLayoutFlags&WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 1021 } 1022 } 1023 1024 private boolean collectViewAttributes() { 1025 final View.AttachInfo attachInfo = mAttachInfo; 1026 if (attachInfo.mRecomputeGlobalAttributes) { 1027 //Log.i(TAG, "Computing view hierarchy attributes!"); 1028 attachInfo.mRecomputeGlobalAttributes = false; 1029 boolean oldScreenOn = attachInfo.mKeepScreenOn; 1030 attachInfo.mKeepScreenOn = false; 1031 attachInfo.mSystemUiVisibility = 0; 1032 attachInfo.mHasSystemUiListeners = false; 1033 mView.dispatchCollectViewAttributes(attachInfo, 0); 1034 attachInfo.mSystemUiVisibility &= ~attachInfo.mDisabledSystemUiVisibility; 1035 WindowManager.LayoutParams params = mWindowAttributes; 1036 attachInfo.mSystemUiVisibility |= getImpliedSystemUiVisibility(params); 1037 if (attachInfo.mKeepScreenOn != oldScreenOn 1038 || attachInfo.mSystemUiVisibility != params.subtreeSystemUiVisibility 1039 || attachInfo.mHasSystemUiListeners != params.hasSystemUiListeners) { 1040 applyKeepScreenOnFlag(params); 1041 params.subtreeSystemUiVisibility = attachInfo.mSystemUiVisibility; 1042 params.hasSystemUiListeners = attachInfo.mHasSystemUiListeners; 1043 mView.dispatchWindowSystemUiVisiblityChanged(attachInfo.mSystemUiVisibility); 1044 return true; 1045 } 1046 } 1047 return false; 1048 } 1049 1050 private int getImpliedSystemUiVisibility(WindowManager.LayoutParams params) { 1051 int vis = 0; 1052 // Translucent decor window flags imply stable system ui visibility. 1053 if ((params.flags & WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS) != 0) { 1054 vis |= View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN; 1055 } 1056 if ((params.flags & WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION) != 0) { 1057 vis |= View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION; 1058 } 1059 return vis; 1060 } 1061 1062 private boolean measureHierarchy(final View host, final WindowManager.LayoutParams lp, 1063 final Resources res, final int desiredWindowWidth, final int desiredWindowHeight) { 1064 int childWidthMeasureSpec; 1065 int childHeightMeasureSpec; 1066 boolean windowSizeMayChange = false; 1067 1068 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) Log.v(TAG, 1069 "Measuring " + host + " in display " + desiredWindowWidth 1070 + "x" + desiredWindowHeight + "..."); 1071 1072 boolean goodMeasure = false; 1073 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT) { 1074 // On large screens, we don't want to allow dialogs to just 1075 // stretch to fill the entire width of the screen to display 1076 // one line of text. First try doing the layout at a smaller 1077 // size to see if it will fit. 1078 final DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1079 res.getValue(com.android.internal.R.dimen.config_prefDialogWidth, mTmpValue, true); 1080 int baseSize = 0; 1081 if (mTmpValue.type == TypedValue.TYPE_DIMENSION) { 1082 baseSize = (int)mTmpValue.getDimension(packageMetrics); 1083 } 1084 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": baseSize=" + baseSize); 1085 if (baseSize != 0 && desiredWindowWidth > baseSize) { 1086 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1087 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1088 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1089 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": measured (" 1090 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1091 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1092 goodMeasure = true; 1093 } else { 1094 // Didn't fit in that size... try expanding a bit. 1095 baseSize = (baseSize+desiredWindowWidth)/2; 1096 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": next baseSize=" 1097 + baseSize); 1098 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1099 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1100 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": measured (" 1101 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1102 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1103 if (DEBUG_DIALOG) Log.v(TAG, "Good!"); 1104 goodMeasure = true; 1105 } 1106 } 1107 } 1108 } 1109 1110 if (!goodMeasure) { 1111 childWidthMeasureSpec = getRootMeasureSpec(desiredWindowWidth, lp.width); 1112 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1113 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1114 if (mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) { 1115 windowSizeMayChange = true; 1116 } 1117 } 1118 1119 if (DBG) { 1120 System.out.println("======================================"); 1121 System.out.println("performTraversals -- after measure"); 1122 host.debug(); 1123 } 1124 1125 return windowSizeMayChange; 1126 } 1127 1128 private void performTraversals() { 1129 // cache mView since it is used so much below... 1130 final View host = mView; 1131 1132 if (DBG) { 1133 System.out.println("======================================"); 1134 System.out.println("performTraversals"); 1135 host.debug(); 1136 } 1137 1138 if (host == null || !mAdded) 1139 return; 1140 1141 mIsInTraversal = true; 1142 mWillDrawSoon = true; 1143 boolean windowSizeMayChange = false; 1144 boolean newSurface = false; 1145 boolean surfaceChanged = false; 1146 WindowManager.LayoutParams lp = mWindowAttributes; 1147 1148 int desiredWindowWidth; 1149 int desiredWindowHeight; 1150 1151 final View.AttachInfo attachInfo = mAttachInfo; 1152 1153 final int viewVisibility = getHostVisibility(); 1154 boolean viewVisibilityChanged = mViewVisibility != viewVisibility 1155 || mNewSurfaceNeeded; 1156 1157 WindowManager.LayoutParams params = null; 1158 if (mWindowAttributesChanged) { 1159 mWindowAttributesChanged = false; 1160 surfaceChanged = true; 1161 params = lp; 1162 } 1163 CompatibilityInfo compatibilityInfo = mDisplayAdjustments.getCompatibilityInfo(); 1164 if (compatibilityInfo.supportsScreen() == mLastInCompatMode) { 1165 params = lp; 1166 mFullRedrawNeeded = true; 1167 mLayoutRequested = true; 1168 if (mLastInCompatMode) { 1169 params.privateFlags &= ~WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 1170 mLastInCompatMode = false; 1171 } else { 1172 params.privateFlags |= WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 1173 mLastInCompatMode = true; 1174 } 1175 } 1176 1177 mWindowAttributesChangesFlag = 0; 1178 1179 Rect frame = mWinFrame; 1180 if (mFirst) { 1181 mFullRedrawNeeded = true; 1182 mLayoutRequested = true; 1183 1184 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL 1185 || lp.type == WindowManager.LayoutParams.TYPE_INPUT_METHOD) { 1186 // NOTE -- system code, won't try to do compat mode. 1187 Point size = new Point(); 1188 mDisplay.getRealSize(size); 1189 desiredWindowWidth = size.x; 1190 desiredWindowHeight = size.y; 1191 } else { 1192 DisplayMetrics packageMetrics = 1193 mView.getContext().getResources().getDisplayMetrics(); 1194 desiredWindowWidth = packageMetrics.widthPixels; 1195 desiredWindowHeight = packageMetrics.heightPixels; 1196 } 1197 1198 // For the very first time, tell the view hierarchy that it 1199 // is attached to the window. Note that at this point the surface 1200 // object is not initialized to its backing store, but soon it 1201 // will be (assuming the window is visible). 1202 attachInfo.mSurface = mSurface; 1203 // We used to use the following condition to choose 32 bits drawing caches: 1204 // PixelFormat.hasAlpha(lp.format) || lp.format == PixelFormat.RGBX_8888 1205 // However, windows are now always 32 bits by default, so choose 32 bits 1206 attachInfo.mUse32BitDrawingCache = true; 1207 attachInfo.mHasWindowFocus = false; 1208 attachInfo.mWindowVisibility = viewVisibility; 1209 attachInfo.mRecomputeGlobalAttributes = false; 1210 viewVisibilityChanged = false; 1211 mLastConfiguration.setTo(host.getResources().getConfiguration()); 1212 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1213 // Set the layout direction if it has not been set before (inherit is the default) 1214 if (mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 1215 host.setLayoutDirection(mLastConfiguration.getLayoutDirection()); 1216 } 1217 host.dispatchAttachedToWindow(attachInfo, 0); 1218 attachInfo.mTreeObserver.dispatchOnWindowAttachedChange(true); 1219 mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets); 1220 host.fitSystemWindows(mFitSystemWindowsInsets); 1221 //Log.i(TAG, "Screen on initialized: " + attachInfo.mKeepScreenOn); 1222 1223 } else { 1224 desiredWindowWidth = frame.width(); 1225 desiredWindowHeight = frame.height(); 1226 if (desiredWindowWidth != mWidth || desiredWindowHeight != mHeight) { 1227 if (DEBUG_ORIENTATION) Log.v(TAG, 1228 "View " + host + " resized to: " + frame); 1229 mFullRedrawNeeded = true; 1230 mLayoutRequested = true; 1231 windowSizeMayChange = true; 1232 } 1233 } 1234 1235 if (viewVisibilityChanged) { 1236 attachInfo.mWindowVisibility = viewVisibility; 1237 host.dispatchWindowVisibilityChanged(viewVisibility); 1238 if (viewVisibility != View.VISIBLE || mNewSurfaceNeeded) { 1239 destroyHardwareResources(); 1240 } 1241 if (viewVisibility == View.GONE) { 1242 // After making a window gone, we will count it as being 1243 // shown for the first time the next time it gets focus. 1244 mHasHadWindowFocus = false; 1245 } 1246 } 1247 1248 // Execute enqueued actions on every traversal in case a detached view enqueued an action 1249 getRunQueue().executeActions(attachInfo.mHandler); 1250 1251 boolean insetsChanged = false; 1252 1253 boolean layoutRequested = mLayoutRequested && !mStopped; 1254 if (layoutRequested) { 1255 1256 final Resources res = mView.getContext().getResources(); 1257 1258 if (mFirst) { 1259 // make sure touch mode code executes by setting cached value 1260 // to opposite of the added touch mode. 1261 mAttachInfo.mInTouchMode = !mAddedTouchMode; 1262 ensureTouchModeLocally(mAddedTouchMode); 1263 } else { 1264 if (!mPendingOverscanInsets.equals(mAttachInfo.mOverscanInsets)) { 1265 insetsChanged = true; 1266 } 1267 if (!mPendingContentInsets.equals(mAttachInfo.mContentInsets)) { 1268 insetsChanged = true; 1269 } 1270 if (!mPendingVisibleInsets.equals(mAttachInfo.mVisibleInsets)) { 1271 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1272 if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: " 1273 + mAttachInfo.mVisibleInsets); 1274 } 1275 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT 1276 || lp.height == ViewGroup.LayoutParams.WRAP_CONTENT) { 1277 windowSizeMayChange = true; 1278 1279 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL 1280 || lp.type == WindowManager.LayoutParams.TYPE_INPUT_METHOD) { 1281 // NOTE -- system code, won't try to do compat mode. 1282 Point size = new Point(); 1283 mDisplay.getRealSize(size); 1284 desiredWindowWidth = size.x; 1285 desiredWindowHeight = size.y; 1286 } else { 1287 DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1288 desiredWindowWidth = packageMetrics.widthPixels; 1289 desiredWindowHeight = packageMetrics.heightPixels; 1290 } 1291 } 1292 } 1293 1294 // Ask host how big it wants to be 1295 windowSizeMayChange |= measureHierarchy(host, lp, res, 1296 desiredWindowWidth, desiredWindowHeight); 1297 } 1298 1299 if (collectViewAttributes()) { 1300 params = lp; 1301 } 1302 if (attachInfo.mForceReportNewAttributes) { 1303 attachInfo.mForceReportNewAttributes = false; 1304 params = lp; 1305 } 1306 1307 if (mFirst || attachInfo.mViewVisibilityChanged) { 1308 attachInfo.mViewVisibilityChanged = false; 1309 int resizeMode = mSoftInputMode & 1310 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST; 1311 // If we are in auto resize mode, then we need to determine 1312 // what mode to use now. 1313 if (resizeMode == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 1314 final int N = attachInfo.mScrollContainers.size(); 1315 for (int i=0; i<N; i++) { 1316 if (attachInfo.mScrollContainers.get(i).isShown()) { 1317 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE; 1318 } 1319 } 1320 if (resizeMode == 0) { 1321 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_PAN; 1322 } 1323 if ((lp.softInputMode & 1324 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) != resizeMode) { 1325 lp.softInputMode = (lp.softInputMode & 1326 ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) | 1327 resizeMode; 1328 params = lp; 1329 } 1330 } 1331 } 1332 1333 if (params != null) { 1334 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 1335 if (!PixelFormat.formatHasAlpha(params.format)) { 1336 params.format = PixelFormat.TRANSLUCENT; 1337 } 1338 } 1339 mAttachInfo.mOverscanRequested = (params.flags 1340 & WindowManager.LayoutParams.FLAG_LAYOUT_IN_OVERSCAN) != 0; 1341 } 1342 1343 if (mFitSystemWindowsRequested) { 1344 mFitSystemWindowsRequested = false; 1345 mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets); 1346 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1347 host.fitSystemWindows(mFitSystemWindowsInsets); 1348 if (mLayoutRequested) { 1349 // Short-circuit catching a new layout request here, so 1350 // we don't need to go through two layout passes when things 1351 // change due to fitting system windows, which can happen a lot. 1352 windowSizeMayChange |= measureHierarchy(host, lp, 1353 mView.getContext().getResources(), 1354 desiredWindowWidth, desiredWindowHeight); 1355 } 1356 } 1357 1358 if (layoutRequested) { 1359 // Clear this now, so that if anything requests a layout in the 1360 // rest of this function we will catch it and re-run a full 1361 // layout pass. 1362 mLayoutRequested = false; 1363 } 1364 1365 boolean windowShouldResize = layoutRequested && windowSizeMayChange 1366 && ((mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) 1367 || (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT && 1368 frame.width() < desiredWindowWidth && frame.width() != mWidth) 1369 || (lp.height == ViewGroup.LayoutParams.WRAP_CONTENT && 1370 frame.height() < desiredWindowHeight && frame.height() != mHeight)); 1371 1372 // Determine whether to compute insets. 1373 // If there are no inset listeners remaining then we may still need to compute 1374 // insets in case the old insets were non-empty and must be reset. 1375 final boolean computesInternalInsets = 1376 attachInfo.mTreeObserver.hasComputeInternalInsetsListeners() 1377 || attachInfo.mHasNonEmptyGivenInternalInsets; 1378 1379 boolean insetsPending = false; 1380 int relayoutResult = 0; 1381 1382 if (mFirst || windowShouldResize || insetsChanged || 1383 viewVisibilityChanged || params != null) { 1384 1385 if (viewVisibility == View.VISIBLE) { 1386 // If this window is giving internal insets to the window 1387 // manager, and it is being added or changing its visibility, 1388 // then we want to first give the window manager "fake" 1389 // insets to cause it to effectively ignore the content of 1390 // the window during layout. This avoids it briefly causing 1391 // other windows to resize/move based on the raw frame of the 1392 // window, waiting until we can finish laying out this window 1393 // and get back to the window manager with the ultimately 1394 // computed insets. 1395 insetsPending = computesInternalInsets && (mFirst || viewVisibilityChanged); 1396 } 1397 1398 if (mSurfaceHolder != null) { 1399 mSurfaceHolder.mSurfaceLock.lock(); 1400 mDrawingAllowed = true; 1401 } 1402 1403 boolean hwInitialized = false; 1404 boolean contentInsetsChanged = false; 1405 boolean hadSurface = mSurface.isValid(); 1406 1407 try { 1408 if (DEBUG_LAYOUT) { 1409 Log.i(TAG, "host=w:" + host.getMeasuredWidth() + ", h:" + 1410 host.getMeasuredHeight() + ", params=" + params); 1411 } 1412 1413 final int surfaceGenerationId = mSurface.getGenerationId(); 1414 relayoutResult = relayoutWindow(params, viewVisibility, insetsPending); 1415 if (!mDrawDuringWindowsAnimating && 1416 (relayoutResult & WindowManagerGlobal.RELAYOUT_RES_ANIMATING) != 0) { 1417 mWindowsAnimating = true; 1418 } 1419 1420 if (DEBUG_LAYOUT) Log.v(TAG, "relayout: frame=" + frame.toShortString() 1421 + " overscan=" + mPendingOverscanInsets.toShortString() 1422 + " content=" + mPendingContentInsets.toShortString() 1423 + " visible=" + mPendingVisibleInsets.toShortString() 1424 + " surface=" + mSurface); 1425 1426 if (mPendingConfiguration.seq != 0) { 1427 if (DEBUG_CONFIGURATION) Log.v(TAG, "Visible with new config: " 1428 + mPendingConfiguration); 1429 updateConfiguration(mPendingConfiguration, !mFirst); 1430 mPendingConfiguration.seq = 0; 1431 } 1432 1433 final boolean overscanInsetsChanged = !mPendingOverscanInsets.equals( 1434 mAttachInfo.mOverscanInsets); 1435 contentInsetsChanged = !mPendingContentInsets.equals( 1436 mAttachInfo.mContentInsets); 1437 final boolean visibleInsetsChanged = !mPendingVisibleInsets.equals( 1438 mAttachInfo.mVisibleInsets); 1439 if (contentInsetsChanged) { 1440 if (mWidth > 0 && mHeight > 0 && lp != null && 1441 ((lp.systemUiVisibility|lp.subtreeSystemUiVisibility) 1442 & View.SYSTEM_UI_LAYOUT_FLAGS) == 0 && 1443 mSurface != null && mSurface.isValid() && 1444 !mAttachInfo.mTurnOffWindowResizeAnim && 1445 mAttachInfo.mHardwareRenderer != null && 1446 mAttachInfo.mHardwareRenderer.isEnabled() && 1447 mAttachInfo.mHardwareRenderer.validate() && 1448 lp != null && !PixelFormat.formatHasAlpha(lp.format)) { 1449 1450 disposeResizeBuffer(); 1451 1452 boolean completed = false; 1453 HardwareCanvas hwRendererCanvas = mAttachInfo.mHardwareRenderer.getCanvas(); 1454 HardwareCanvas layerCanvas = null; 1455 try { 1456 if (mResizeBuffer == null) { 1457 mResizeBuffer = mAttachInfo.mHardwareRenderer.createHardwareLayer( 1458 mWidth, mHeight, false); 1459 } else if (mResizeBuffer.getWidth() != mWidth || 1460 mResizeBuffer.getHeight() != mHeight) { 1461 mResizeBuffer.resize(mWidth, mHeight); 1462 } 1463 // TODO: should handle create/resize failure 1464 layerCanvas = mResizeBuffer.start(hwRendererCanvas); 1465 final int restoreCount = layerCanvas.save(); 1466 1467 int yoff; 1468 final boolean scrolling = mScroller != null 1469 && mScroller.computeScrollOffset(); 1470 if (scrolling) { 1471 yoff = mScroller.getCurrY(); 1472 mScroller.abortAnimation(); 1473 } else { 1474 yoff = mScrollY; 1475 } 1476 1477 layerCanvas.translate(0, -yoff); 1478 if (mTranslator != null) { 1479 mTranslator.translateCanvas(layerCanvas); 1480 } 1481 1482 DisplayList displayList = mView.mDisplayList; 1483 if (displayList != null && displayList.isValid()) { 1484 layerCanvas.drawDisplayList(displayList, null, 1485 DisplayList.FLAG_CLIP_CHILDREN); 1486 } else { 1487 mView.draw(layerCanvas); 1488 } 1489 1490 drawAccessibilityFocusedDrawableIfNeeded(layerCanvas); 1491 1492 mResizeBufferStartTime = SystemClock.uptimeMillis(); 1493 mResizeBufferDuration = mView.getResources().getInteger( 1494 com.android.internal.R.integer.config_mediumAnimTime); 1495 completed = true; 1496 1497 layerCanvas.restoreToCount(restoreCount); 1498 } catch (OutOfMemoryError e) { 1499 Log.w(TAG, "Not enough memory for content change anim buffer", e); 1500 } finally { 1501 if (mResizeBuffer != null) { 1502 mResizeBuffer.end(hwRendererCanvas); 1503 if (!completed) { 1504 disposeResizeBuffer(); 1505 } 1506 } 1507 } 1508 } 1509 mAttachInfo.mContentInsets.set(mPendingContentInsets); 1510 if (DEBUG_LAYOUT) Log.v(TAG, "Content insets changing to: " 1511 + mAttachInfo.mContentInsets); 1512 } 1513 if (overscanInsetsChanged) { 1514 mAttachInfo.mOverscanInsets.set(mPendingOverscanInsets); 1515 if (DEBUG_LAYOUT) Log.v(TAG, "Overscan insets changing to: " 1516 + mAttachInfo.mOverscanInsets); 1517 // Need to relayout with content insets. 1518 contentInsetsChanged = true; 1519 } 1520 if (contentInsetsChanged || mLastSystemUiVisibility != 1521 mAttachInfo.mSystemUiVisibility || mFitSystemWindowsRequested 1522 || mLastOverscanRequested != mAttachInfo.mOverscanRequested) { 1523 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1524 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1525 mFitSystemWindowsRequested = false; 1526 mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets); 1527 host.fitSystemWindows(mFitSystemWindowsInsets); 1528 } 1529 if (visibleInsetsChanged) { 1530 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1531 if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: " 1532 + mAttachInfo.mVisibleInsets); 1533 } 1534 1535 if (!hadSurface) { 1536 if (mSurface.isValid()) { 1537 // If we are creating a new surface, then we need to 1538 // completely redraw it. Also, when we get to the 1539 // point of drawing it we will hold off and schedule 1540 // a new traversal instead. This is so we can tell the 1541 // window manager about all of the windows being displayed 1542 // before actually drawing them, so it can display then 1543 // all at once. 1544 newSurface = true; 1545 mFullRedrawNeeded = true; 1546 mPreviousTransparentRegion.setEmpty(); 1547 1548 if (mAttachInfo.mHardwareRenderer != null) { 1549 try { 1550 hwInitialized = mAttachInfo.mHardwareRenderer.initialize( 1551 mHolder.getSurface()); 1552 } catch (OutOfResourcesException e) { 1553 handleOutOfResourcesException(e); 1554 return; 1555 } 1556 } 1557 } 1558 } else if (!mSurface.isValid()) { 1559 // If the surface has been removed, then reset the scroll 1560 // positions. 1561 if (mLastScrolledFocus != null) { 1562 mLastScrolledFocus.clear(); 1563 } 1564 mScrollY = mCurScrollY = 0; 1565 if (mScroller != null) { 1566 mScroller.abortAnimation(); 1567 } 1568 disposeResizeBuffer(); 1569 // Our surface is gone 1570 if (mAttachInfo.mHardwareRenderer != null && 1571 mAttachInfo.mHardwareRenderer.isEnabled()) { 1572 mAttachInfo.mHardwareRenderer.destroy(true); 1573 } 1574 } else if (surfaceGenerationId != mSurface.getGenerationId() && 1575 mSurfaceHolder == null && mAttachInfo.mHardwareRenderer != null) { 1576 mFullRedrawNeeded = true; 1577 try { 1578 mAttachInfo.mHardwareRenderer.updateSurface(mHolder.getSurface()); 1579 } catch (OutOfResourcesException e) { 1580 handleOutOfResourcesException(e); 1581 return; 1582 } 1583 } 1584 } catch (RemoteException e) { 1585 } 1586 1587 if (DEBUG_ORIENTATION) Log.v( 1588 TAG, "Relayout returned: frame=" + frame + ", surface=" + mSurface); 1589 1590 attachInfo.mWindowLeft = frame.left; 1591 attachInfo.mWindowTop = frame.top; 1592 1593 // !!FIXME!! This next section handles the case where we did not get the 1594 // window size we asked for. We should avoid this by getting a maximum size from 1595 // the window session beforehand. 1596 if (mWidth != frame.width() || mHeight != frame.height()) { 1597 mWidth = frame.width(); 1598 mHeight = frame.height(); 1599 } 1600 1601 if (mSurfaceHolder != null) { 1602 // The app owns the surface; tell it about what is going on. 1603 if (mSurface.isValid()) { 1604 // XXX .copyFrom() doesn't work! 1605 //mSurfaceHolder.mSurface.copyFrom(mSurface); 1606 mSurfaceHolder.mSurface = mSurface; 1607 } 1608 mSurfaceHolder.setSurfaceFrameSize(mWidth, mHeight); 1609 mSurfaceHolder.mSurfaceLock.unlock(); 1610 if (mSurface.isValid()) { 1611 if (!hadSurface) { 1612 mSurfaceHolder.ungetCallbacks(); 1613 1614 mIsCreating = true; 1615 mSurfaceHolderCallback.surfaceCreated(mSurfaceHolder); 1616 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1617 if (callbacks != null) { 1618 for (SurfaceHolder.Callback c : callbacks) { 1619 c.surfaceCreated(mSurfaceHolder); 1620 } 1621 } 1622 surfaceChanged = true; 1623 } 1624 if (surfaceChanged) { 1625 mSurfaceHolderCallback.surfaceChanged(mSurfaceHolder, 1626 lp.format, mWidth, mHeight); 1627 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1628 if (callbacks != null) { 1629 for (SurfaceHolder.Callback c : callbacks) { 1630 c.surfaceChanged(mSurfaceHolder, lp.format, 1631 mWidth, mHeight); 1632 } 1633 } 1634 } 1635 mIsCreating = false; 1636 } else if (hadSurface) { 1637 mSurfaceHolder.ungetCallbacks(); 1638 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1639 mSurfaceHolderCallback.surfaceDestroyed(mSurfaceHolder); 1640 if (callbacks != null) { 1641 for (SurfaceHolder.Callback c : callbacks) { 1642 c.surfaceDestroyed(mSurfaceHolder); 1643 } 1644 } 1645 mSurfaceHolder.mSurfaceLock.lock(); 1646 try { 1647 mSurfaceHolder.mSurface = new Surface(); 1648 } finally { 1649 mSurfaceHolder.mSurfaceLock.unlock(); 1650 } 1651 } 1652 } 1653 1654 if (mAttachInfo.mHardwareRenderer != null && 1655 mAttachInfo.mHardwareRenderer.isEnabled()) { 1656 if (hwInitialized || 1657 mWidth != mAttachInfo.mHardwareRenderer.getWidth() || 1658 mHeight != mAttachInfo.mHardwareRenderer.getHeight()) { 1659 mAttachInfo.mHardwareRenderer.setup(mWidth, mHeight); 1660 if (!hwInitialized) { 1661 mAttachInfo.mHardwareRenderer.invalidate(mHolder.getSurface()); 1662 mFullRedrawNeeded = true; 1663 } 1664 } 1665 } 1666 1667 if (!mStopped) { 1668 boolean focusChangedDueToTouchMode = ensureTouchModeLocally( 1669 (relayoutResult&WindowManagerGlobal.RELAYOUT_RES_IN_TOUCH_MODE) != 0); 1670 if (focusChangedDueToTouchMode || mWidth != host.getMeasuredWidth() 1671 || mHeight != host.getMeasuredHeight() || contentInsetsChanged) { 1672 int childWidthMeasureSpec = getRootMeasureSpec(mWidth, lp.width); 1673 int childHeightMeasureSpec = getRootMeasureSpec(mHeight, lp.height); 1674 1675 if (DEBUG_LAYOUT) Log.v(TAG, "Ooops, something changed! mWidth=" 1676 + mWidth + " measuredWidth=" + host.getMeasuredWidth() 1677 + " mHeight=" + mHeight 1678 + " measuredHeight=" + host.getMeasuredHeight() 1679 + " coveredInsetsChanged=" + contentInsetsChanged); 1680 1681 // Ask host how big it wants to be 1682 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1683 1684 // Implementation of weights from WindowManager.LayoutParams 1685 // We just grow the dimensions as needed and re-measure if 1686 // needs be 1687 int width = host.getMeasuredWidth(); 1688 int height = host.getMeasuredHeight(); 1689 boolean measureAgain = false; 1690 1691 if (lp.horizontalWeight > 0.0f) { 1692 width += (int) ((mWidth - width) * lp.horizontalWeight); 1693 childWidthMeasureSpec = MeasureSpec.makeMeasureSpec(width, 1694 MeasureSpec.EXACTLY); 1695 measureAgain = true; 1696 } 1697 if (lp.verticalWeight > 0.0f) { 1698 height += (int) ((mHeight - height) * lp.verticalWeight); 1699 childHeightMeasureSpec = MeasureSpec.makeMeasureSpec(height, 1700 MeasureSpec.EXACTLY); 1701 measureAgain = true; 1702 } 1703 1704 if (measureAgain) { 1705 if (DEBUG_LAYOUT) Log.v(TAG, 1706 "And hey let's measure once more: width=" + width 1707 + " height=" + height); 1708 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1709 } 1710 1711 layoutRequested = true; 1712 } 1713 } 1714 } else { 1715 // Not the first pass and no window/insets/visibility change but the window 1716 // may have moved and we need check that and if so to update the left and right 1717 // in the attach info. We translate only the window frame since on window move 1718 // the window manager tells us only for the new frame but the insets are the 1719 // same and we do not want to translate them more than once. 1720 1721 // TODO: Well, we are checking whether the frame has changed similarly 1722 // to how this is done for the insets. This is however incorrect since 1723 // the insets and the frame are translated. For example, the old frame 1724 // was (1, 1 - 1, 1) and was translated to say (2, 2 - 2, 2), now the new 1725 // reported frame is (2, 2 - 2, 2) which implies no change but this is not 1726 // true since we are comparing a not translated value to a translated one. 1727 // This scenario is rare but we may want to fix that. 1728 1729 final boolean windowMoved = (attachInfo.mWindowLeft != frame.left 1730 || attachInfo.mWindowTop != frame.top); 1731 if (windowMoved) { 1732 if (mTranslator != null) { 1733 mTranslator.translateRectInScreenToAppWinFrame(frame); 1734 } 1735 attachInfo.mWindowLeft = frame.left; 1736 attachInfo.mWindowTop = frame.top; 1737 } 1738 } 1739 1740 final boolean didLayout = layoutRequested && !mStopped; 1741 boolean triggerGlobalLayoutListener = didLayout 1742 || attachInfo.mRecomputeGlobalAttributes; 1743 if (didLayout) { 1744 performLayout(lp, desiredWindowWidth, desiredWindowHeight); 1745 1746 // By this point all views have been sized and positioned 1747 // We can compute the transparent area 1748 1749 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 1750 // start out transparent 1751 // TODO: AVOID THAT CALL BY CACHING THE RESULT? 1752 host.getLocationInWindow(mTmpLocation); 1753 mTransparentRegion.set(mTmpLocation[0], mTmpLocation[1], 1754 mTmpLocation[0] + host.mRight - host.mLeft, 1755 mTmpLocation[1] + host.mBottom - host.mTop); 1756 1757 host.gatherTransparentRegion(mTransparentRegion); 1758 if (mTranslator != null) { 1759 mTranslator.translateRegionInWindowToScreen(mTransparentRegion); 1760 } 1761 1762 if (!mTransparentRegion.equals(mPreviousTransparentRegion)) { 1763 mPreviousTransparentRegion.set(mTransparentRegion); 1764 mFullRedrawNeeded = true; 1765 // reconfigure window manager 1766 try { 1767 mWindowSession.setTransparentRegion(mWindow, mTransparentRegion); 1768 } catch (RemoteException e) { 1769 } 1770 } 1771 } 1772 1773 if (DBG) { 1774 System.out.println("======================================"); 1775 System.out.println("performTraversals -- after setFrame"); 1776 host.debug(); 1777 } 1778 } 1779 1780 if (triggerGlobalLayoutListener) { 1781 attachInfo.mRecomputeGlobalAttributes = false; 1782 attachInfo.mTreeObserver.dispatchOnGlobalLayout(); 1783 } 1784 1785 if (computesInternalInsets) { 1786 // Clear the original insets. 1787 final ViewTreeObserver.InternalInsetsInfo insets = attachInfo.mGivenInternalInsets; 1788 insets.reset(); 1789 1790 // Compute new insets in place. 1791 attachInfo.mTreeObserver.dispatchOnComputeInternalInsets(insets); 1792 attachInfo.mHasNonEmptyGivenInternalInsets = !insets.isEmpty(); 1793 1794 // Tell the window manager. 1795 if (insetsPending || !mLastGivenInsets.equals(insets)) { 1796 mLastGivenInsets.set(insets); 1797 1798 // Translate insets to screen coordinates if needed. 1799 final Rect contentInsets; 1800 final Rect visibleInsets; 1801 final Region touchableRegion; 1802 if (mTranslator != null) { 1803 contentInsets = mTranslator.getTranslatedContentInsets(insets.contentInsets); 1804 visibleInsets = mTranslator.getTranslatedVisibleInsets(insets.visibleInsets); 1805 touchableRegion = mTranslator.getTranslatedTouchableArea(insets.touchableRegion); 1806 } else { 1807 contentInsets = insets.contentInsets; 1808 visibleInsets = insets.visibleInsets; 1809 touchableRegion = insets.touchableRegion; 1810 } 1811 1812 try { 1813 mWindowSession.setInsets(mWindow, insets.mTouchableInsets, 1814 contentInsets, visibleInsets, touchableRegion); 1815 } catch (RemoteException e) { 1816 } 1817 } 1818 } 1819 1820 boolean skipDraw = false; 1821 1822 if (mFirst) { 1823 // handle first focus request 1824 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: mView.hasFocus()=" 1825 + mView.hasFocus()); 1826 if (mView != null) { 1827 if (!mView.hasFocus()) { 1828 mView.requestFocus(View.FOCUS_FORWARD); 1829 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: requested focused view=" 1830 + mView.findFocus()); 1831 } else { 1832 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: existing focused view=" 1833 + mView.findFocus()); 1834 } 1835 } 1836 if ((relayoutResult & WindowManagerGlobal.RELAYOUT_RES_ANIMATING) != 0) { 1837 // The first time we relayout the window, if the system is 1838 // doing window animations, we want to hold of on any future 1839 // draws until the animation is done. 1840 mWindowsAnimating = true; 1841 } 1842 } else if (mWindowsAnimating) { 1843 skipDraw = true; 1844 } 1845 1846 mFirst = false; 1847 mWillDrawSoon = false; 1848 mNewSurfaceNeeded = false; 1849 mViewVisibility = viewVisibility; 1850 1851 if (mAttachInfo.mHasWindowFocus && !isInLocalFocusMode()) { 1852 final boolean imTarget = WindowManager.LayoutParams 1853 .mayUseInputMethod(mWindowAttributes.flags); 1854 if (imTarget != mLastWasImTarget) { 1855 mLastWasImTarget = imTarget; 1856 InputMethodManager imm = InputMethodManager.peekInstance(); 1857 if (imm != null && imTarget) { 1858 imm.startGettingWindowFocus(mView); 1859 imm.onWindowFocus(mView, mView.findFocus(), 1860 mWindowAttributes.softInputMode, 1861 !mHasHadWindowFocus, mWindowAttributes.flags); 1862 } 1863 } 1864 } 1865 1866 // Remember if we must report the next draw. 1867 if ((relayoutResult & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 1868 mReportNextDraw = true; 1869 } 1870 1871 boolean cancelDraw = attachInfo.mTreeObserver.dispatchOnPreDraw() || 1872 viewVisibility != View.VISIBLE; 1873 1874 if (!cancelDraw && !newSurface) { 1875 if (!skipDraw || mReportNextDraw) { 1876 if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 1877 for (int i = 0; i < mPendingTransitions.size(); ++i) { 1878 mPendingTransitions.get(i).startChangingAnimations(); 1879 } 1880 mPendingTransitions.clear(); 1881 } 1882 1883 performDraw(); 1884 } 1885 } else { 1886 if (viewVisibility == View.VISIBLE) { 1887 // Try again 1888 scheduleTraversals(); 1889 } else if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 1890 for (int i = 0; i < mPendingTransitions.size(); ++i) { 1891 mPendingTransitions.get(i).endChangingAnimations(); 1892 } 1893 mPendingTransitions.clear(); 1894 } 1895 } 1896 1897 mIsInTraversal = false; 1898 } 1899 1900 private void handleOutOfResourcesException(Surface.OutOfResourcesException e) { 1901 Log.e(TAG, "OutOfResourcesException initializing HW surface", e); 1902 try { 1903 if (!mWindowSession.outOfMemory(mWindow) && 1904 Process.myUid() != Process.SYSTEM_UID) { 1905 Slog.w(TAG, "No processes killed for memory; killing self"); 1906 Process.killProcess(Process.myPid()); 1907 } 1908 } catch (RemoteException ex) { 1909 } 1910 mLayoutRequested = true; // ask wm for a new surface next time. 1911 } 1912 1913 private void performMeasure(int childWidthMeasureSpec, int childHeightMeasureSpec) { 1914 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "measure"); 1915 try { 1916 mView.measure(childWidthMeasureSpec, childHeightMeasureSpec); 1917 } finally { 1918 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 1919 } 1920 } 1921 1922 /** 1923 * Called by {@link android.view.View#isInLayout()} to determine whether the view hierarchy 1924 * is currently undergoing a layout pass. 1925 * 1926 * @return whether the view hierarchy is currently undergoing a layout pass 1927 */ 1928 boolean isInLayout() { 1929 return mInLayout; 1930 } 1931 1932 /** 1933 * Called by {@link android.view.View#requestLayout()} if the view hierarchy is currently 1934 * undergoing a layout pass. requestLayout() should not generally be called during layout, 1935 * unless the container hierarchy knows what it is doing (i.e., it is fine as long as 1936 * all children in that container hierarchy are measured and laid out at the end of the layout 1937 * pass for that container). If requestLayout() is called anyway, we handle it correctly 1938 * by registering all requesters during a frame as it proceeds. At the end of the frame, 1939 * we check all of those views to see if any still have pending layout requests, which 1940 * indicates that they were not correctly handled by their container hierarchy. If that is 1941 * the case, we clear all such flags in the tree, to remove the buggy flag state that leads 1942 * to blank containers, and force a second request/measure/layout pass in this frame. If 1943 * more requestLayout() calls are received during that second layout pass, we post those 1944 * requests to the next frame to avoid possible infinite loops. 1945 * 1946 * <p>The return value from this method indicates whether the request should proceed 1947 * (if it is a request during the first layout pass) or should be skipped and posted to the 1948 * next frame (if it is a request during the second layout pass).</p> 1949 * 1950 * @param view the view that requested the layout. 1951 * 1952 * @return true if request should proceed, false otherwise. 1953 */ 1954 boolean requestLayoutDuringLayout(final View view) { 1955 if (view.mParent == null || view.mAttachInfo == null) { 1956 // Would not normally trigger another layout, so just let it pass through as usual 1957 return true; 1958 } 1959 if (!mLayoutRequesters.contains(view)) { 1960 mLayoutRequesters.add(view); 1961 } 1962 if (!mHandlingLayoutInLayoutRequest) { 1963 // Let the request proceed normally; it will be processed in a second layout pass 1964 // if necessary 1965 return true; 1966 } else { 1967 // Don't let the request proceed during the second layout pass. 1968 // It will post to the next frame instead. 1969 return false; 1970 } 1971 } 1972 1973 private void performLayout(WindowManager.LayoutParams lp, int desiredWindowWidth, 1974 int desiredWindowHeight) { 1975 mLayoutRequested = false; 1976 mScrollMayChange = true; 1977 mInLayout = true; 1978 1979 final View host = mView; 1980 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) { 1981 Log.v(TAG, "Laying out " + host + " to (" + 1982 host.getMeasuredWidth() + ", " + host.getMeasuredHeight() + ")"); 1983 } 1984 1985 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "layout"); 1986 try { 1987 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 1988 1989 mInLayout = false; 1990 int numViewsRequestingLayout = mLayoutRequesters.size(); 1991 if (numViewsRequestingLayout > 0) { 1992 // requestLayout() was called during layout. 1993 // If no layout-request flags are set on the requesting views, there is no problem. 1994 // If some requests are still pending, then we need to clear those flags and do 1995 // a full request/measure/layout pass to handle this situation. 1996 ArrayList<View> validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, 1997 false); 1998 if (validLayoutRequesters != null) { 1999 // Set this flag to indicate that any further requests are happening during 2000 // the second pass, which may result in posting those requests to the next 2001 // frame instead 2002 mHandlingLayoutInLayoutRequest = true; 2003 2004 // Process fresh layout requests, then measure and layout 2005 int numValidRequests = validLayoutRequesters.size(); 2006 for (int i = 0; i < numValidRequests; ++i) { 2007 final View view = validLayoutRequesters.get(i); 2008 Log.w("View", "requestLayout() improperly called by " + view + 2009 " during layout: running second layout pass"); 2010 view.requestLayout(); 2011 } 2012 measureHierarchy(host, lp, mView.getContext().getResources(), 2013 desiredWindowWidth, desiredWindowHeight); 2014 mInLayout = true; 2015 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 2016 2017 mHandlingLayoutInLayoutRequest = false; 2018 2019 // Check the valid requests again, this time without checking/clearing the 2020 // layout flags, since requests happening during the second pass get noop'd 2021 validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, true); 2022 if (validLayoutRequesters != null) { 2023 final ArrayList<View> finalRequesters = validLayoutRequesters; 2024 // Post second-pass requests to the next frame 2025 getRunQueue().post(new Runnable() { 2026 @Override 2027 public void run() { 2028 int numValidRequests = finalRequesters.size(); 2029 for (int i = 0; i < numValidRequests; ++i) { 2030 final View view = finalRequesters.get(i); 2031 Log.w("View", "requestLayout() improperly called by " + view + 2032 " during second layout pass: posting in next frame"); 2033 view.requestLayout(); 2034 } 2035 } 2036 }); 2037 } 2038 } 2039 2040 } 2041 } finally { 2042 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2043 } 2044 mInLayout = false; 2045 } 2046 2047 /** 2048 * This method is called during layout when there have been calls to requestLayout() during 2049 * layout. It walks through the list of views that requested layout to determine which ones 2050 * still need it, based on visibility in the hierarchy and whether they have already been 2051 * handled (as is usually the case with ListView children). 2052 * 2053 * @param layoutRequesters The list of views that requested layout during layout 2054 * @param secondLayoutRequests Whether the requests were issued during the second layout pass. 2055 * If so, the FORCE_LAYOUT flag was not set on requesters. 2056 * @return A list of the actual views that still need to be laid out. 2057 */ 2058 private ArrayList<View> getValidLayoutRequesters(ArrayList<View> layoutRequesters, 2059 boolean secondLayoutRequests) { 2060 2061 int numViewsRequestingLayout = layoutRequesters.size(); 2062 ArrayList<View> validLayoutRequesters = null; 2063 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2064 View view = layoutRequesters.get(i); 2065 if (view != null && view.mAttachInfo != null && view.mParent != null && 2066 (secondLayoutRequests || (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) == 2067 View.PFLAG_FORCE_LAYOUT)) { 2068 boolean gone = false; 2069 View parent = view; 2070 // Only trigger new requests for views in a non-GONE hierarchy 2071 while (parent != null) { 2072 if ((parent.mViewFlags & View.VISIBILITY_MASK) == View.GONE) { 2073 gone = true; 2074 break; 2075 } 2076 if (parent.mParent instanceof View) { 2077 parent = (View) parent.mParent; 2078 } else { 2079 parent = null; 2080 } 2081 } 2082 if (!gone) { 2083 if (validLayoutRequesters == null) { 2084 validLayoutRequesters = new ArrayList<View>(); 2085 } 2086 validLayoutRequesters.add(view); 2087 } 2088 } 2089 } 2090 if (!secondLayoutRequests) { 2091 // If we're checking the layout flags, then we need to clean them up also 2092 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2093 View view = layoutRequesters.get(i); 2094 while (view != null && 2095 (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) != 0) { 2096 view.mPrivateFlags &= ~View.PFLAG_FORCE_LAYOUT; 2097 if (view.mParent instanceof View) { 2098 view = (View) view.mParent; 2099 } else { 2100 view = null; 2101 } 2102 } 2103 } 2104 } 2105 layoutRequesters.clear(); 2106 return validLayoutRequesters; 2107 } 2108 2109 @Override 2110 public void requestTransparentRegion(View child) { 2111 // the test below should not fail unless someone is messing with us 2112 checkThread(); 2113 if (mView == child) { 2114 mView.mPrivateFlags |= View.PFLAG_REQUEST_TRANSPARENT_REGIONS; 2115 // Need to make sure we re-evaluate the window attributes next 2116 // time around, to ensure the window has the correct format. 2117 mWindowAttributesChanged = true; 2118 mWindowAttributesChangesFlag = 0; 2119 requestLayout(); 2120 } 2121 } 2122 2123 /** 2124 * Figures out the measure spec for the root view in a window based on it's 2125 * layout params. 2126 * 2127 * @param windowSize 2128 * The available width or height of the window 2129 * 2130 * @param rootDimension 2131 * The layout params for one dimension (width or height) of the 2132 * window. 2133 * 2134 * @return The measure spec to use to measure the root view. 2135 */ 2136 private static int getRootMeasureSpec(int windowSize, int rootDimension) { 2137 int measureSpec; 2138 switch (rootDimension) { 2139 2140 case ViewGroup.LayoutParams.MATCH_PARENT: 2141 // Window can't resize. Force root view to be windowSize. 2142 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.EXACTLY); 2143 break; 2144 case ViewGroup.LayoutParams.WRAP_CONTENT: 2145 // Window can resize. Set max size for root view. 2146 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.AT_MOST); 2147 break; 2148 default: 2149 // Window wants to be an exact size. Force root view to be that size. 2150 measureSpec = MeasureSpec.makeMeasureSpec(rootDimension, MeasureSpec.EXACTLY); 2151 break; 2152 } 2153 return measureSpec; 2154 } 2155 2156 int mHardwareYOffset; 2157 int mResizeAlpha; 2158 final Paint mResizePaint = new Paint(); 2159 2160 @Override 2161 public void onHardwarePreDraw(HardwareCanvas canvas) { 2162 canvas.translate(0, -mHardwareYOffset); 2163 } 2164 2165 @Override 2166 public void onHardwarePostDraw(HardwareCanvas canvas) { 2167 if (mResizeBuffer != null) { 2168 mResizePaint.setAlpha(mResizeAlpha); 2169 canvas.drawHardwareLayer(mResizeBuffer, 0.0f, mHardwareYOffset, mResizePaint); 2170 } 2171 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2172 } 2173 2174 /** 2175 * @hide 2176 */ 2177 void outputDisplayList(View view) { 2178 if (mAttachInfo != null && mAttachInfo.mHardwareCanvas != null) { 2179 DisplayList displayList = view.getDisplayList(); 2180 if (displayList != null) { 2181 mAttachInfo.mHardwareCanvas.outputDisplayList(displayList); 2182 } 2183 } 2184 } 2185 2186 /** 2187 * @see #PROPERTY_PROFILE_RENDERING 2188 */ 2189 private void profileRendering(boolean enabled) { 2190 if (mProfileRendering) { 2191 mRenderProfilingEnabled = enabled; 2192 2193 if (mRenderProfiler != null) { 2194 mChoreographer.removeFrameCallback(mRenderProfiler); 2195 } 2196 if (mRenderProfilingEnabled) { 2197 if (mRenderProfiler == null) { 2198 mRenderProfiler = new Choreographer.FrameCallback() { 2199 @Override 2200 public void doFrame(long frameTimeNanos) { 2201 mDirty.set(0, 0, mWidth, mHeight); 2202 scheduleTraversals(); 2203 if (mRenderProfilingEnabled) { 2204 mChoreographer.postFrameCallback(mRenderProfiler); 2205 } 2206 } 2207 }; 2208 } 2209 mChoreographer.postFrameCallback(mRenderProfiler); 2210 } else { 2211 mRenderProfiler = null; 2212 } 2213 } 2214 } 2215 2216 /** 2217 * Called from draw() when DEBUG_FPS is enabled 2218 */ 2219 private void trackFPS() { 2220 // Tracks frames per second drawn. First value in a series of draws may be bogus 2221 // because it down not account for the intervening idle time 2222 long nowTime = System.currentTimeMillis(); 2223 if (mFpsStartTime < 0) { 2224 mFpsStartTime = mFpsPrevTime = nowTime; 2225 mFpsNumFrames = 0; 2226 } else { 2227 ++mFpsNumFrames; 2228 String thisHash = Integer.toHexString(System.identityHashCode(this)); 2229 long frameTime = nowTime - mFpsPrevTime; 2230 long totalTime = nowTime - mFpsStartTime; 2231 Log.v(TAG, "0x" + thisHash + "\tFrame time:\t" + frameTime); 2232 mFpsPrevTime = nowTime; 2233 if (totalTime > 1000) { 2234 float fps = (float) mFpsNumFrames * 1000 / totalTime; 2235 Log.v(TAG, "0x" + thisHash + "\tFPS:\t" + fps); 2236 mFpsStartTime = nowTime; 2237 mFpsNumFrames = 0; 2238 } 2239 } 2240 } 2241 2242 private void performDraw() { 2243 if (!mAttachInfo.mScreenOn && !mReportNextDraw) { 2244 return; 2245 } 2246 2247 final boolean fullRedrawNeeded = mFullRedrawNeeded; 2248 mFullRedrawNeeded = false; 2249 2250 mIsDrawing = true; 2251 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "draw"); 2252 try { 2253 draw(fullRedrawNeeded); 2254 } finally { 2255 mIsDrawing = false; 2256 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2257 } 2258 2259 if (mReportNextDraw) { 2260 mReportNextDraw = false; 2261 2262 if (LOCAL_LOGV) { 2263 Log.v(TAG, "FINISHED DRAWING: " + mWindowAttributes.getTitle()); 2264 } 2265 if (mSurfaceHolder != null && mSurface.isValid()) { 2266 mSurfaceHolderCallback.surfaceRedrawNeeded(mSurfaceHolder); 2267 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 2268 if (callbacks != null) { 2269 for (SurfaceHolder.Callback c : callbacks) { 2270 if (c instanceof SurfaceHolder.Callback2) { 2271 ((SurfaceHolder.Callback2)c).surfaceRedrawNeeded( 2272 mSurfaceHolder); 2273 } 2274 } 2275 } 2276 } 2277 try { 2278 mWindowSession.finishDrawing(mWindow); 2279 } catch (RemoteException e) { 2280 } 2281 } 2282 } 2283 2284 private void draw(boolean fullRedrawNeeded) { 2285 Surface surface = mSurface; 2286 if (!surface.isValid()) { 2287 return; 2288 } 2289 2290 if (DEBUG_FPS) { 2291 trackFPS(); 2292 } 2293 2294 if (!sFirstDrawComplete) { 2295 synchronized (sFirstDrawHandlers) { 2296 sFirstDrawComplete = true; 2297 final int count = sFirstDrawHandlers.size(); 2298 for (int i = 0; i< count; i++) { 2299 mHandler.post(sFirstDrawHandlers.get(i)); 2300 } 2301 } 2302 } 2303 2304 scrollToRectOrFocus(null, false); 2305 2306 final AttachInfo attachInfo = mAttachInfo; 2307 if (attachInfo.mViewScrollChanged) { 2308 attachInfo.mViewScrollChanged = false; 2309 attachInfo.mTreeObserver.dispatchOnScrollChanged(); 2310 } 2311 2312 int yoff; 2313 boolean animating = mScroller != null && mScroller.computeScrollOffset(); 2314 if (animating) { 2315 yoff = mScroller.getCurrY(); 2316 } else { 2317 yoff = mScrollY; 2318 } 2319 if (mCurScrollY != yoff) { 2320 mCurScrollY = yoff; 2321 fullRedrawNeeded = true; 2322 } 2323 2324 final float appScale = attachInfo.mApplicationScale; 2325 final boolean scalingRequired = attachInfo.mScalingRequired; 2326 2327 int resizeAlpha = 0; 2328 if (mResizeBuffer != null) { 2329 long deltaTime = SystemClock.uptimeMillis() - mResizeBufferStartTime; 2330 if (deltaTime < mResizeBufferDuration) { 2331 float amt = deltaTime/(float) mResizeBufferDuration; 2332 amt = mResizeInterpolator.getInterpolation(amt); 2333 animating = true; 2334 resizeAlpha = 255 - (int)(amt*255); 2335 } else { 2336 disposeResizeBuffer(); 2337 } 2338 } 2339 2340 final Rect dirty = mDirty; 2341 if (mSurfaceHolder != null) { 2342 // The app owns the surface, we won't draw. 2343 dirty.setEmpty(); 2344 if (animating) { 2345 if (mScroller != null) { 2346 mScroller.abortAnimation(); 2347 } 2348 disposeResizeBuffer(); 2349 } 2350 return; 2351 } 2352 2353 if (fullRedrawNeeded) { 2354 attachInfo.mIgnoreDirtyState = true; 2355 dirty.set(0, 0, (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 2356 } 2357 2358 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2359 Log.v(TAG, "Draw " + mView + "/" 2360 + mWindowAttributes.getTitle() 2361 + ": dirty={" + dirty.left + "," + dirty.top 2362 + "," + dirty.right + "," + dirty.bottom + "} surface=" 2363 + surface + " surface.isValid()=" + surface.isValid() + ", appScale:" + 2364 appScale + ", width=" + mWidth + ", height=" + mHeight); 2365 } 2366 2367 invalidateDisplayLists(); 2368 2369 attachInfo.mTreeObserver.dispatchOnDraw(); 2370 2371 if (!dirty.isEmpty() || mIsAnimating) { 2372 if (attachInfo.mHardwareRenderer != null && attachInfo.mHardwareRenderer.isEnabled()) { 2373 // Draw with hardware renderer. 2374 mIsAnimating = false; 2375 mHardwareYOffset = yoff; 2376 mResizeAlpha = resizeAlpha; 2377 2378 mCurrentDirty.set(dirty); 2379 dirty.setEmpty(); 2380 2381 attachInfo.mHardwareRenderer.draw(mView, attachInfo, this, 2382 animating ? null : mCurrentDirty); 2383 } else { 2384 // If we get here with a disabled & requested hardware renderer, something went 2385 // wrong (an invalidate posted right before we destroyed the hardware surface 2386 // for instance) so we should just bail out. Locking the surface with software 2387 // rendering at this point would lock it forever and prevent hardware renderer 2388 // from doing its job when it comes back. 2389 // Before we request a new frame we must however attempt to reinitiliaze the 2390 // hardware renderer if it's in requested state. This would happen after an 2391 // eglTerminate() for instance. 2392 if (attachInfo.mHardwareRenderer != null && 2393 !attachInfo.mHardwareRenderer.isEnabled() && 2394 attachInfo.mHardwareRenderer.isRequested()) { 2395 2396 try { 2397 attachInfo.mHardwareRenderer.initializeIfNeeded(mWidth, mHeight, 2398 mHolder.getSurface()); 2399 } catch (OutOfResourcesException e) { 2400 handleOutOfResourcesException(e); 2401 return; 2402 } 2403 2404 mFullRedrawNeeded = true; 2405 scheduleTraversals(); 2406 return; 2407 } 2408 2409 if (!drawSoftware(surface, attachInfo, yoff, scalingRequired, dirty)) { 2410 return; 2411 } 2412 } 2413 } 2414 2415 if (animating) { 2416 mFullRedrawNeeded = true; 2417 scheduleTraversals(); 2418 } 2419 } 2420 2421 /** 2422 * @return true if drawing was succesfull, false if an error occurred 2423 */ 2424 private boolean drawSoftware(Surface surface, AttachInfo attachInfo, int yoff, 2425 boolean scalingRequired, Rect dirty) { 2426 2427 // Draw with software renderer. 2428 Canvas canvas; 2429 try { 2430 int left = dirty.left; 2431 int top = dirty.top; 2432 int right = dirty.right; 2433 int bottom = dirty.bottom; 2434 2435 canvas = mSurface.lockCanvas(dirty); 2436 2437 // The dirty rectangle can be modified by Surface.lockCanvas() 2438 //noinspection ConstantConditions 2439 if (left != dirty.left || top != dirty.top || right != dirty.right || 2440 bottom != dirty.bottom) { 2441 attachInfo.mIgnoreDirtyState = true; 2442 } 2443 2444 // TODO: Do this in native 2445 canvas.setDensity(mDensity); 2446 } catch (Surface.OutOfResourcesException e) { 2447 handleOutOfResourcesException(e); 2448 return false; 2449 } catch (IllegalArgumentException e) { 2450 Log.e(TAG, "Could not lock surface", e); 2451 // Don't assume this is due to out of memory, it could be 2452 // something else, and if it is something else then we could 2453 // kill stuff (or ourself) for no reason. 2454 mLayoutRequested = true; // ask wm for a new surface next time. 2455 return false; 2456 } 2457 2458 try { 2459 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2460 Log.v(TAG, "Surface " + surface + " drawing to bitmap w=" 2461 + canvas.getWidth() + ", h=" + canvas.getHeight()); 2462 //canvas.drawARGB(255, 255, 0, 0); 2463 } 2464 2465 // If this bitmap's format includes an alpha channel, we 2466 // need to clear it before drawing so that the child will 2467 // properly re-composite its drawing on a transparent 2468 // background. This automatically respects the clip/dirty region 2469 // or 2470 // If we are applying an offset, we need to clear the area 2471 // where the offset doesn't appear to avoid having garbage 2472 // left in the blank areas. 2473 if (!canvas.isOpaque() || yoff != 0) { 2474 canvas.drawColor(0, PorterDuff.Mode.CLEAR); 2475 } 2476 2477 dirty.setEmpty(); 2478 mIsAnimating = false; 2479 attachInfo.mDrawingTime = SystemClock.uptimeMillis(); 2480 mView.mPrivateFlags |= View.PFLAG_DRAWN; 2481 2482 if (DEBUG_DRAW) { 2483 Context cxt = mView.getContext(); 2484 Log.i(TAG, "Drawing: package:" + cxt.getPackageName() + 2485 ", metrics=" + cxt.getResources().getDisplayMetrics() + 2486 ", compatibilityInfo=" + cxt.getResources().getCompatibilityInfo()); 2487 } 2488 try { 2489 canvas.translate(0, -yoff); 2490 if (mTranslator != null) { 2491 mTranslator.translateCanvas(canvas); 2492 } 2493 canvas.setScreenDensity(scalingRequired ? mNoncompatDensity : 0); 2494 attachInfo.mSetIgnoreDirtyState = false; 2495 2496 mView.draw(canvas); 2497 2498 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2499 } finally { 2500 if (!attachInfo.mSetIgnoreDirtyState) { 2501 // Only clear the flag if it was not set during the mView.draw() call 2502 attachInfo.mIgnoreDirtyState = false; 2503 } 2504 } 2505 } finally { 2506 try { 2507 surface.unlockCanvasAndPost(canvas); 2508 } catch (IllegalArgumentException e) { 2509 Log.e(TAG, "Could not unlock surface", e); 2510 mLayoutRequested = true; // ask wm for a new surface next time. 2511 //noinspection ReturnInsideFinallyBlock 2512 return false; 2513 } 2514 2515 if (LOCAL_LOGV) { 2516 Log.v(TAG, "Surface " + surface + " unlockCanvasAndPost"); 2517 } 2518 } 2519 return true; 2520 } 2521 2522 /** 2523 * We want to draw a highlight around the current accessibility focused. 2524 * Since adding a style for all possible view is not a viable option we 2525 * have this specialized drawing method. 2526 * 2527 * Note: We are doing this here to be able to draw the highlight for 2528 * virtual views in addition to real ones. 2529 * 2530 * @param canvas The canvas on which to draw. 2531 */ 2532 private void drawAccessibilityFocusedDrawableIfNeeded(Canvas canvas) { 2533 AccessibilityManager manager = AccessibilityManager.getInstance(mView.mContext); 2534 if (!manager.isEnabled() || !manager.isTouchExplorationEnabled()) { 2535 return; 2536 } 2537 if (mAccessibilityFocusedHost == null || mAccessibilityFocusedHost.mAttachInfo == null) { 2538 return; 2539 } 2540 Drawable drawable = getAccessibilityFocusedDrawable(); 2541 if (drawable == null) { 2542 return; 2543 } 2544 AccessibilityNodeProvider provider = 2545 mAccessibilityFocusedHost.getAccessibilityNodeProvider(); 2546 Rect bounds = mView.mAttachInfo.mTmpInvalRect; 2547 if (provider == null) { 2548 mAccessibilityFocusedHost.getBoundsOnScreen(bounds); 2549 } else { 2550 if (mAccessibilityFocusedVirtualView == null) { 2551 return; 2552 } 2553 mAccessibilityFocusedVirtualView.getBoundsInScreen(bounds); 2554 } 2555 bounds.offset(-mAttachInfo.mWindowLeft, -mAttachInfo.mWindowTop); 2556 bounds.intersect(0, 0, mAttachInfo.mViewRootImpl.mWidth, mAttachInfo.mViewRootImpl.mHeight); 2557 drawable.setBounds(bounds); 2558 drawable.draw(canvas); 2559 } 2560 2561 private Drawable getAccessibilityFocusedDrawable() { 2562 if (mAttachInfo != null) { 2563 // Lazily load the accessibility focus drawable. 2564 if (mAttachInfo.mAccessibilityFocusDrawable == null) { 2565 TypedValue value = new TypedValue(); 2566 final boolean resolved = mView.mContext.getTheme().resolveAttribute( 2567 R.attr.accessibilityFocusedDrawable, value, true); 2568 if (resolved) { 2569 mAttachInfo.mAccessibilityFocusDrawable = 2570 mView.mContext.getResources().getDrawable(value.resourceId); 2571 } 2572 } 2573 return mAttachInfo.mAccessibilityFocusDrawable; 2574 } 2575 return null; 2576 } 2577 2578 void invalidateDisplayLists() { 2579 final ArrayList<DisplayList> displayLists = mDisplayLists; 2580 final int count = displayLists.size(); 2581 2582 for (int i = 0; i < count; i++) { 2583 final DisplayList displayList = displayLists.get(i); 2584 if (displayList.isDirty()) { 2585 displayList.reset(); 2586 } 2587 } 2588 2589 displayLists.clear(); 2590 } 2591 2592 /** 2593 * @hide 2594 */ 2595 public void setDrawDuringWindowsAnimating(boolean value) { 2596 mDrawDuringWindowsAnimating = value; 2597 if (value) { 2598 handleDispatchDoneAnimating(); 2599 } 2600 } 2601 2602 boolean scrollToRectOrFocus(Rect rectangle, boolean immediate) { 2603 final View.AttachInfo attachInfo = mAttachInfo; 2604 final Rect ci = attachInfo.mContentInsets; 2605 final Rect vi = attachInfo.mVisibleInsets; 2606 int scrollY = 0; 2607 boolean handled = false; 2608 2609 if (vi.left > ci.left || vi.top > ci.top 2610 || vi.right > ci.right || vi.bottom > ci.bottom) { 2611 // We'll assume that we aren't going to change the scroll 2612 // offset, since we want to avoid that unless it is actually 2613 // going to make the focus visible... otherwise we scroll 2614 // all over the place. 2615 scrollY = mScrollY; 2616 // We can be called for two different situations: during a draw, 2617 // to update the scroll position if the focus has changed (in which 2618 // case 'rectangle' is null), or in response to a 2619 // requestChildRectangleOnScreen() call (in which case 'rectangle' 2620 // is non-null and we just want to scroll to whatever that 2621 // rectangle is). 2622 final View focus = mView.findFocus(); 2623 if (focus == null) { 2624 return false; 2625 } 2626 View lastScrolledFocus = (mLastScrolledFocus != null) ? mLastScrolledFocus.get() : null; 2627 if (focus != lastScrolledFocus) { 2628 // If the focus has changed, then ignore any requests to scroll 2629 // to a rectangle; first we want to make sure the entire focus 2630 // view is visible. 2631 rectangle = null; 2632 } 2633 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Eval scroll: focus=" + focus 2634 + " rectangle=" + rectangle + " ci=" + ci 2635 + " vi=" + vi); 2636 if (focus == lastScrolledFocus && !mScrollMayChange && rectangle == null) { 2637 // Optimization: if the focus hasn't changed since last 2638 // time, and no layout has happened, then just leave things 2639 // as they are. 2640 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Keeping scroll y=" 2641 + mScrollY + " vi=" + vi.toShortString()); 2642 } else { 2643 // We need to determine if the currently focused view is 2644 // within the visible part of the window and, if not, apply 2645 // a pan so it can be seen. 2646 mLastScrolledFocus = new WeakReference<View>(focus); 2647 mScrollMayChange = false; 2648 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Need to scroll?"); 2649 // Try to find the rectangle from the focus view. 2650 if (focus.getGlobalVisibleRect(mVisRect, null)) { 2651 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Root w=" 2652 + mView.getWidth() + " h=" + mView.getHeight() 2653 + " ci=" + ci.toShortString() 2654 + " vi=" + vi.toShortString()); 2655 if (rectangle == null) { 2656 focus.getFocusedRect(mTempRect); 2657 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Focus " + focus 2658 + ": focusRect=" + mTempRect.toShortString()); 2659 if (mView instanceof ViewGroup) { 2660 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 2661 focus, mTempRect); 2662 } 2663 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2664 "Focus in window: focusRect=" 2665 + mTempRect.toShortString() 2666 + " visRect=" + mVisRect.toShortString()); 2667 } else { 2668 mTempRect.set(rectangle); 2669 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2670 "Request scroll to rect: " 2671 + mTempRect.toShortString() 2672 + " visRect=" + mVisRect.toShortString()); 2673 } 2674 if (mTempRect.intersect(mVisRect)) { 2675 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2676 "Focus window visible rect: " 2677 + mTempRect.toShortString()); 2678 if (mTempRect.height() > 2679 (mView.getHeight()-vi.top-vi.bottom)) { 2680 // If the focus simply is not going to fit, then 2681 // best is probably just to leave things as-is. 2682 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2683 "Too tall; leaving scrollY=" + scrollY); 2684 } else if ((mTempRect.top-scrollY) < vi.top) { 2685 scrollY -= vi.top - (mTempRect.top-scrollY); 2686 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2687 "Top covered; scrollY=" + scrollY); 2688 } else if ((mTempRect.bottom-scrollY) 2689 > (mView.getHeight()-vi.bottom)) { 2690 scrollY += (mTempRect.bottom-scrollY) 2691 - (mView.getHeight()-vi.bottom); 2692 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2693 "Bottom covered; scrollY=" + scrollY); 2694 } 2695 handled = true; 2696 } 2697 } 2698 } 2699 } 2700 2701 if (scrollY != mScrollY) { 2702 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Pan scroll changed: old=" 2703 + mScrollY + " , new=" + scrollY); 2704 if (!immediate && mResizeBuffer == null) { 2705 if (mScroller == null) { 2706 mScroller = new Scroller(mView.getContext()); 2707 } 2708 mScroller.startScroll(0, mScrollY, 0, scrollY-mScrollY); 2709 } else if (mScroller != null) { 2710 mScroller.abortAnimation(); 2711 } 2712 mScrollY = scrollY; 2713 } 2714 2715 return handled; 2716 } 2717 2718 /** 2719 * @hide 2720 */ 2721 public View getAccessibilityFocusedHost() { 2722 return mAccessibilityFocusedHost; 2723 } 2724 2725 /** 2726 * @hide 2727 */ 2728 public AccessibilityNodeInfo getAccessibilityFocusedVirtualView() { 2729 return mAccessibilityFocusedVirtualView; 2730 } 2731 2732 void setAccessibilityFocus(View view, AccessibilityNodeInfo node) { 2733 // If we have a virtual view with accessibility focus we need 2734 // to clear the focus and invalidate the virtual view bounds. 2735 if (mAccessibilityFocusedVirtualView != null) { 2736 2737 AccessibilityNodeInfo focusNode = mAccessibilityFocusedVirtualView; 2738 View focusHost = mAccessibilityFocusedHost; 2739 2740 // Wipe the state of the current accessibility focus since 2741 // the call into the provider to clear accessibility focus 2742 // will fire an accessibility event which will end up calling 2743 // this method and we want to have clean state when this 2744 // invocation happens. 2745 mAccessibilityFocusedHost = null; 2746 mAccessibilityFocusedVirtualView = null; 2747 2748 // Clear accessibility focus on the host after clearing state since 2749 // this method may be reentrant. 2750 focusHost.clearAccessibilityFocusNoCallbacks(); 2751 2752 AccessibilityNodeProvider provider = focusHost.getAccessibilityNodeProvider(); 2753 if (provider != null) { 2754 // Invalidate the area of the cleared accessibility focus. 2755 focusNode.getBoundsInParent(mTempRect); 2756 focusHost.invalidate(mTempRect); 2757 // Clear accessibility focus in the virtual node. 2758 final int virtualNodeId = AccessibilityNodeInfo.getVirtualDescendantId( 2759 focusNode.getSourceNodeId()); 2760 provider.performAction(virtualNodeId, 2761 AccessibilityNodeInfo.ACTION_CLEAR_ACCESSIBILITY_FOCUS, null); 2762 } 2763 focusNode.recycle(); 2764 } 2765 if (mAccessibilityFocusedHost != null) { 2766 // Clear accessibility focus in the view. 2767 mAccessibilityFocusedHost.clearAccessibilityFocusNoCallbacks(); 2768 } 2769 2770 // Set the new focus host and node. 2771 mAccessibilityFocusedHost = view; 2772 mAccessibilityFocusedVirtualView = node; 2773 } 2774 2775 @Override 2776 public void requestChildFocus(View child, View focused) { 2777 if (DEBUG_INPUT_RESIZE) { 2778 Log.v(TAG, "Request child focus: focus now " + focused); 2779 } 2780 checkThread(); 2781 scheduleTraversals(); 2782 } 2783 2784 @Override 2785 public void clearChildFocus(View child) { 2786 if (DEBUG_INPUT_RESIZE) { 2787 Log.v(TAG, "Clearing child focus"); 2788 } 2789 checkThread(); 2790 scheduleTraversals(); 2791 } 2792 2793 @Override 2794 public ViewParent getParentForAccessibility() { 2795 return null; 2796 } 2797 2798 @Override 2799 public void focusableViewAvailable(View v) { 2800 checkThread(); 2801 if (mView != null) { 2802 if (!mView.hasFocus()) { 2803 v.requestFocus(); 2804 } else { 2805 // the one case where will transfer focus away from the current one 2806 // is if the current view is a view group that prefers to give focus 2807 // to its children first AND the view is a descendant of it. 2808 View focused = mView.findFocus(); 2809 if (focused instanceof ViewGroup) { 2810 ViewGroup group = (ViewGroup) focused; 2811 if (group.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 2812 && isViewDescendantOf(v, focused)) { 2813 v.requestFocus(); 2814 } 2815 } 2816 } 2817 } 2818 } 2819 2820 @Override 2821 public void recomputeViewAttributes(View child) { 2822 checkThread(); 2823 if (mView == child) { 2824 mAttachInfo.mRecomputeGlobalAttributes = true; 2825 if (!mWillDrawSoon) { 2826 scheduleTraversals(); 2827 } 2828 } 2829 } 2830 2831 void dispatchDetachedFromWindow() { 2832 if (mView != null && mView.mAttachInfo != null) { 2833 if (mAttachInfo.mHardwareRenderer != null && 2834 mAttachInfo.mHardwareRenderer.isEnabled()) { 2835 mAttachInfo.mHardwareRenderer.validate(); 2836 } 2837 mAttachInfo.mTreeObserver.dispatchOnWindowAttachedChange(false); 2838 mView.dispatchDetachedFromWindow(); 2839 } 2840 2841 mAccessibilityInteractionConnectionManager.ensureNoConnection(); 2842 mAccessibilityManager.removeAccessibilityStateChangeListener( 2843 mAccessibilityInteractionConnectionManager); 2844 removeSendWindowContentChangedCallback(); 2845 2846 destroyHardwareRenderer(); 2847 2848 setAccessibilityFocus(null, null); 2849 2850 mView.assignParent(null); 2851 mView = null; 2852 mAttachInfo.mRootView = null; 2853 mAttachInfo.mSurface = null; 2854 2855 mSurface.release(); 2856 2857 if (mInputQueueCallback != null && mInputQueue != null) { 2858 mInputQueueCallback.onInputQueueDestroyed(mInputQueue); 2859 mInputQueue.dispose(); 2860 mInputQueueCallback = null; 2861 mInputQueue = null; 2862 } 2863 if (mInputEventReceiver != null) { 2864 mInputEventReceiver.dispose(); 2865 mInputEventReceiver = null; 2866 } 2867 try { 2868 mWindowSession.remove(mWindow); 2869 } catch (RemoteException e) { 2870 } 2871 2872 // Dispose the input channel after removing the window so the Window Manager 2873 // doesn't interpret the input channel being closed as an abnormal termination. 2874 if (mInputChannel != null) { 2875 mInputChannel.dispose(); 2876 mInputChannel = null; 2877 } 2878 2879 unscheduleTraversals(); 2880 } 2881 2882 void updateConfiguration(Configuration config, boolean force) { 2883 if (DEBUG_CONFIGURATION) Log.v(TAG, 2884 "Applying new config to window " 2885 + mWindowAttributes.getTitle() 2886 + ": " + config); 2887 2888 CompatibilityInfo ci = mDisplayAdjustments.getCompatibilityInfo(); 2889 if (!ci.equals(CompatibilityInfo.DEFAULT_COMPATIBILITY_INFO)) { 2890 config = new Configuration(config); 2891 ci.applyToConfiguration(mNoncompatDensity, config); 2892 } 2893 2894 synchronized (sConfigCallbacks) { 2895 for (int i=sConfigCallbacks.size()-1; i>=0; i--) { 2896 sConfigCallbacks.get(i).onConfigurationChanged(config); 2897 } 2898 } 2899 if (mView != null) { 2900 // At this point the resources have been updated to 2901 // have the most recent config, whatever that is. Use 2902 // the one in them which may be newer. 2903 config = mView.getResources().getConfiguration(); 2904 if (force || mLastConfiguration.diff(config) != 0) { 2905 final int lastLayoutDirection = mLastConfiguration.getLayoutDirection(); 2906 final int currentLayoutDirection = config.getLayoutDirection(); 2907 mLastConfiguration.setTo(config); 2908 if (lastLayoutDirection != currentLayoutDirection && 2909 mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 2910 mView.setLayoutDirection(currentLayoutDirection); 2911 } 2912 mView.dispatchConfigurationChanged(config); 2913 } 2914 } 2915 2916 mFlipControllerFallbackKeys = 2917 mContext.getResources().getBoolean(R.bool.flip_controller_fallback_keys); 2918 } 2919 2920 /** 2921 * Return true if child is an ancestor of parent, (or equal to the parent). 2922 */ 2923 public static boolean isViewDescendantOf(View child, View parent) { 2924 if (child == parent) { 2925 return true; 2926 } 2927 2928 final ViewParent theParent = child.getParent(); 2929 return (theParent instanceof ViewGroup) && isViewDescendantOf((View) theParent, parent); 2930 } 2931 2932 private static void forceLayout(View view) { 2933 view.forceLayout(); 2934 if (view instanceof ViewGroup) { 2935 ViewGroup group = (ViewGroup) view; 2936 final int count = group.getChildCount(); 2937 for (int i = 0; i < count; i++) { 2938 forceLayout(group.getChildAt(i)); 2939 } 2940 } 2941 } 2942 2943 private final static int MSG_INVALIDATE = 1; 2944 private final static int MSG_INVALIDATE_RECT = 2; 2945 private final static int MSG_DIE = 3; 2946 private final static int MSG_RESIZED = 4; 2947 private final static int MSG_RESIZED_REPORT = 5; 2948 private final static int MSG_WINDOW_FOCUS_CHANGED = 6; 2949 private final static int MSG_DISPATCH_INPUT_EVENT = 7; 2950 private final static int MSG_DISPATCH_APP_VISIBILITY = 8; 2951 private final static int MSG_DISPATCH_GET_NEW_SURFACE = 9; 2952 private final static int MSG_DISPATCH_KEY_FROM_IME = 11; 2953 private final static int MSG_FINISH_INPUT_CONNECTION = 12; 2954 private final static int MSG_CHECK_FOCUS = 13; 2955 private final static int MSG_CLOSE_SYSTEM_DIALOGS = 14; 2956 private final static int MSG_DISPATCH_DRAG_EVENT = 15; 2957 private final static int MSG_DISPATCH_DRAG_LOCATION_EVENT = 16; 2958 private final static int MSG_DISPATCH_SYSTEM_UI_VISIBILITY = 17; 2959 private final static int MSG_UPDATE_CONFIGURATION = 18; 2960 private final static int MSG_PROCESS_INPUT_EVENTS = 19; 2961 private final static int MSG_DISPATCH_SCREEN_STATE = 20; 2962 private final static int MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST = 21; 2963 private final static int MSG_DISPATCH_DONE_ANIMATING = 22; 2964 private final static int MSG_INVALIDATE_WORLD = 23; 2965 private final static int MSG_WINDOW_MOVED = 24; 2966 private final static int MSG_FLUSH_LAYER_UPDATES = 25; 2967 2968 final class ViewRootHandler extends Handler { 2969 @Override 2970 public String getMessageName(Message message) { 2971 switch (message.what) { 2972 case MSG_INVALIDATE: 2973 return "MSG_INVALIDATE"; 2974 case MSG_INVALIDATE_RECT: 2975 return "MSG_INVALIDATE_RECT"; 2976 case MSG_DIE: 2977 return "MSG_DIE"; 2978 case MSG_RESIZED: 2979 return "MSG_RESIZED"; 2980 case MSG_RESIZED_REPORT: 2981 return "MSG_RESIZED_REPORT"; 2982 case MSG_WINDOW_FOCUS_CHANGED: 2983 return "MSG_WINDOW_FOCUS_CHANGED"; 2984 case MSG_DISPATCH_INPUT_EVENT: 2985 return "MSG_DISPATCH_INPUT_EVENT"; 2986 case MSG_DISPATCH_APP_VISIBILITY: 2987 return "MSG_DISPATCH_APP_VISIBILITY"; 2988 case MSG_DISPATCH_GET_NEW_SURFACE: 2989 return "MSG_DISPATCH_GET_NEW_SURFACE"; 2990 case MSG_DISPATCH_KEY_FROM_IME: 2991 return "MSG_DISPATCH_KEY_FROM_IME"; 2992 case MSG_FINISH_INPUT_CONNECTION: 2993 return "MSG_FINISH_INPUT_CONNECTION"; 2994 case MSG_CHECK_FOCUS: 2995 return "MSG_CHECK_FOCUS"; 2996 case MSG_CLOSE_SYSTEM_DIALOGS: 2997 return "MSG_CLOSE_SYSTEM_DIALOGS"; 2998 case MSG_DISPATCH_DRAG_EVENT: 2999 return "MSG_DISPATCH_DRAG_EVENT"; 3000 case MSG_DISPATCH_DRAG_LOCATION_EVENT: 3001 return "MSG_DISPATCH_DRAG_LOCATION_EVENT"; 3002 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: 3003 return "MSG_DISPATCH_SYSTEM_UI_VISIBILITY"; 3004 case MSG_UPDATE_CONFIGURATION: 3005 return "MSG_UPDATE_CONFIGURATION"; 3006 case MSG_PROCESS_INPUT_EVENTS: 3007 return "MSG_PROCESS_INPUT_EVENTS"; 3008 case MSG_DISPATCH_SCREEN_STATE: 3009 return "MSG_DISPATCH_SCREEN_STATE"; 3010 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: 3011 return "MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST"; 3012 case MSG_DISPATCH_DONE_ANIMATING: 3013 return "MSG_DISPATCH_DONE_ANIMATING"; 3014 case MSG_WINDOW_MOVED: 3015 return "MSG_WINDOW_MOVED"; 3016 case MSG_FLUSH_LAYER_UPDATES: 3017 return "MSG_FLUSH_LAYER_UPDATES"; 3018 } 3019 return super.getMessageName(message); 3020 } 3021 3022 @Override 3023 public void handleMessage(Message msg) { 3024 switch (msg.what) { 3025 case MSG_INVALIDATE: 3026 ((View) msg.obj).invalidate(); 3027 break; 3028 case MSG_INVALIDATE_RECT: 3029 final View.AttachInfo.InvalidateInfo info = (View.AttachInfo.InvalidateInfo) msg.obj; 3030 info.target.invalidate(info.left, info.top, info.right, info.bottom); 3031 info.recycle(); 3032 break; 3033 case MSG_PROCESS_INPUT_EVENTS: 3034 mProcessInputEventsScheduled = false; 3035 doProcessInputEvents(); 3036 break; 3037 case MSG_DISPATCH_APP_VISIBILITY: 3038 handleAppVisibility(msg.arg1 != 0); 3039 break; 3040 case MSG_DISPATCH_GET_NEW_SURFACE: 3041 handleGetNewSurface(); 3042 break; 3043 case MSG_RESIZED: { 3044 // Recycled in the fall through... 3045 SomeArgs args = (SomeArgs) msg.obj; 3046 if (mWinFrame.equals(args.arg1) 3047 && mPendingOverscanInsets.equals(args.arg5) 3048 && mPendingContentInsets.equals(args.arg2) 3049 && mPendingVisibleInsets.equals(args.arg3) 3050 && args.arg4 == null) { 3051 break; 3052 } 3053 } // fall through... 3054 case MSG_RESIZED_REPORT: 3055 if (mAdded) { 3056 SomeArgs args = (SomeArgs) msg.obj; 3057 3058 Configuration config = (Configuration) args.arg4; 3059 if (config != null) { 3060 updateConfiguration(config, false); 3061 } 3062 3063 mWinFrame.set((Rect) args.arg1); 3064 mPendingOverscanInsets.set((Rect) args.arg5); 3065 mPendingContentInsets.set((Rect) args.arg2); 3066 mPendingVisibleInsets.set((Rect) args.arg3); 3067 3068 args.recycle(); 3069 3070 if (msg.what == MSG_RESIZED_REPORT) { 3071 mReportNextDraw = true; 3072 } 3073 3074 if (mView != null) { 3075 forceLayout(mView); 3076 } 3077 3078 requestLayout(); 3079 } 3080 break; 3081 case MSG_WINDOW_MOVED: 3082 if (mAdded) { 3083 final int w = mWinFrame.width(); 3084 final int h = mWinFrame.height(); 3085 final int l = msg.arg1; 3086 final int t = msg.arg2; 3087 mWinFrame.left = l; 3088 mWinFrame.right = l + w; 3089 mWinFrame.top = t; 3090 mWinFrame.bottom = t + h; 3091 3092 if (mView != null) { 3093 forceLayout(mView); 3094 } 3095 requestLayout(); 3096 } 3097 break; 3098 case MSG_WINDOW_FOCUS_CHANGED: { 3099 if (mAdded) { 3100 boolean hasWindowFocus = msg.arg1 != 0; 3101 mAttachInfo.mHasWindowFocus = hasWindowFocus; 3102 3103 profileRendering(hasWindowFocus); 3104 3105 if (hasWindowFocus) { 3106 boolean inTouchMode = msg.arg2 != 0; 3107 ensureTouchModeLocally(inTouchMode); 3108 3109 if (mAttachInfo.mHardwareRenderer != null && mSurface.isValid()){ 3110 mFullRedrawNeeded = true; 3111 try { 3112 mAttachInfo.mHardwareRenderer.initializeIfNeeded( 3113 mWidth, mHeight, mHolder.getSurface()); 3114 } catch (OutOfResourcesException e) { 3115 Log.e(TAG, "OutOfResourcesException locking surface", e); 3116 try { 3117 if (!mWindowSession.outOfMemory(mWindow)) { 3118 Slog.w(TAG, "No processes killed for memory; killing self"); 3119 Process.killProcess(Process.myPid()); 3120 } 3121 } catch (RemoteException ex) { 3122 } 3123 // Retry in a bit. 3124 sendMessageDelayed(obtainMessage(msg.what, msg.arg1, msg.arg2), 500); 3125 return; 3126 } 3127 } 3128 } 3129 3130 mLastWasImTarget = WindowManager.LayoutParams 3131 .mayUseInputMethod(mWindowAttributes.flags); 3132 3133 InputMethodManager imm = InputMethodManager.peekInstance(); 3134 if (mView != null) { 3135 if (hasWindowFocus && imm != null && mLastWasImTarget && 3136 !isInLocalFocusMode()) { 3137 imm.startGettingWindowFocus(mView); 3138 } 3139 mAttachInfo.mKeyDispatchState.reset(); 3140 mView.dispatchWindowFocusChanged(hasWindowFocus); 3141 mAttachInfo.mTreeObserver.dispatchOnWindowFocusChange(hasWindowFocus); 3142 } 3143 3144 // Note: must be done after the focus change callbacks, 3145 // so all of the view state is set up correctly. 3146 if (hasWindowFocus) { 3147 if (imm != null && mLastWasImTarget && !isInLocalFocusMode()) { 3148 imm.onWindowFocus(mView, mView.findFocus(), 3149 mWindowAttributes.softInputMode, 3150 !mHasHadWindowFocus, mWindowAttributes.flags); 3151 } 3152 // Clear the forward bit. We can just do this directly, since 3153 // the window manager doesn't care about it. 3154 mWindowAttributes.softInputMode &= 3155 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3156 ((WindowManager.LayoutParams)mView.getLayoutParams()) 3157 .softInputMode &= 3158 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3159 mHasHadWindowFocus = true; 3160 } 3161 3162 setAccessibilityFocus(null, null); 3163 3164 if (mView != null && mAccessibilityManager.isEnabled()) { 3165 if (hasWindowFocus) { 3166 mView.sendAccessibilityEvent( 3167 AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 3168 } 3169 } 3170 } 3171 } break; 3172 case MSG_DIE: 3173 doDie(); 3174 break; 3175 case MSG_DISPATCH_INPUT_EVENT: { 3176 InputEvent event = (InputEvent)msg.obj; 3177 enqueueInputEvent(event, null, 0, true); 3178 } break; 3179 case MSG_DISPATCH_KEY_FROM_IME: { 3180 if (LOCAL_LOGV) Log.v( 3181 TAG, "Dispatching key " 3182 + msg.obj + " from IME to " + mView); 3183 KeyEvent event = (KeyEvent)msg.obj; 3184 if ((event.getFlags()&KeyEvent.FLAG_FROM_SYSTEM) != 0) { 3185 // The IME is trying to say this event is from the 3186 // system! Bad bad bad! 3187 //noinspection UnusedAssignment 3188 event = KeyEvent.changeFlags(event, event.getFlags() & ~KeyEvent.FLAG_FROM_SYSTEM); 3189 } 3190 enqueueInputEvent(event, null, QueuedInputEvent.FLAG_DELIVER_POST_IME, true); 3191 } break; 3192 case MSG_FINISH_INPUT_CONNECTION: { 3193 InputMethodManager imm = InputMethodManager.peekInstance(); 3194 if (imm != null) { 3195 imm.reportFinishInputConnection((InputConnection)msg.obj); 3196 } 3197 } break; 3198 case MSG_CHECK_FOCUS: { 3199 InputMethodManager imm = InputMethodManager.peekInstance(); 3200 if (imm != null) { 3201 imm.checkFocus(); 3202 } 3203 } break; 3204 case MSG_CLOSE_SYSTEM_DIALOGS: { 3205 if (mView != null) { 3206 mView.onCloseSystemDialogs((String)msg.obj); 3207 } 3208 } break; 3209 case MSG_DISPATCH_DRAG_EVENT: 3210 case MSG_DISPATCH_DRAG_LOCATION_EVENT: { 3211 DragEvent event = (DragEvent)msg.obj; 3212 event.mLocalState = mLocalDragState; // only present when this app called startDrag() 3213 handleDragEvent(event); 3214 } break; 3215 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: { 3216 handleDispatchSystemUiVisibilityChanged((SystemUiVisibilityInfo) msg.obj); 3217 } break; 3218 case MSG_UPDATE_CONFIGURATION: { 3219 Configuration config = (Configuration)msg.obj; 3220 if (config.isOtherSeqNewer(mLastConfiguration)) { 3221 config = mLastConfiguration; 3222 } 3223 updateConfiguration(config, false); 3224 } break; 3225 case MSG_DISPATCH_SCREEN_STATE: { 3226 if (mView != null) { 3227 handleScreenStateChange(msg.arg1 == 1); 3228 } 3229 } break; 3230 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: { 3231 setAccessibilityFocus(null, null); 3232 } break; 3233 case MSG_DISPATCH_DONE_ANIMATING: { 3234 handleDispatchDoneAnimating(); 3235 } break; 3236 case MSG_INVALIDATE_WORLD: { 3237 if (mView != null) { 3238 invalidateWorld(mView); 3239 } 3240 } break; 3241 case MSG_FLUSH_LAYER_UPDATES: { 3242 flushHardwareLayerUpdates(); 3243 } break; 3244 } 3245 } 3246 } 3247 3248 final ViewRootHandler mHandler = new ViewRootHandler(); 3249 3250 /** 3251 * Something in the current window tells us we need to change the touch mode. For 3252 * example, we are not in touch mode, and the user touches the screen. 3253 * 3254 * If the touch mode has changed, tell the window manager, and handle it locally. 3255 * 3256 * @param inTouchMode Whether we want to be in touch mode. 3257 * @return True if the touch mode changed and focus changed was changed as a result 3258 */ 3259 boolean ensureTouchMode(boolean inTouchMode) { 3260 if (DBG) Log.d("touchmode", "ensureTouchMode(" + inTouchMode + "), current " 3261 + "touch mode is " + mAttachInfo.mInTouchMode); 3262 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3263 3264 // tell the window manager 3265 try { 3266 if (!isInLocalFocusMode()) { 3267 mWindowSession.setInTouchMode(inTouchMode); 3268 } 3269 } catch (RemoteException e) { 3270 throw new RuntimeException(e); 3271 } 3272 3273 // handle the change 3274 return ensureTouchModeLocally(inTouchMode); 3275 } 3276 3277 /** 3278 * Ensure that the touch mode for this window is set, and if it is changing, 3279 * take the appropriate action. 3280 * @param inTouchMode Whether we want to be in touch mode. 3281 * @return True if the touch mode changed and focus changed was changed as a result 3282 */ 3283 private boolean ensureTouchModeLocally(boolean inTouchMode) { 3284 if (DBG) Log.d("touchmode", "ensureTouchModeLocally(" + inTouchMode + "), current " 3285 + "touch mode is " + mAttachInfo.mInTouchMode); 3286 3287 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3288 3289 mAttachInfo.mInTouchMode = inTouchMode; 3290 mAttachInfo.mTreeObserver.dispatchOnTouchModeChanged(inTouchMode); 3291 3292 return (inTouchMode) ? enterTouchMode() : leaveTouchMode(); 3293 } 3294 3295 private boolean enterTouchMode() { 3296 if (mView != null && mView.hasFocus()) { 3297 // note: not relying on mFocusedView here because this could 3298 // be when the window is first being added, and mFocused isn't 3299 // set yet. 3300 final View focused = mView.findFocus(); 3301 if (focused != null && !focused.isFocusableInTouchMode()) { 3302 final ViewGroup ancestorToTakeFocus = findAncestorToTakeFocusInTouchMode(focused); 3303 if (ancestorToTakeFocus != null) { 3304 // there is an ancestor that wants focus after its 3305 // descendants that is focusable in touch mode.. give it 3306 // focus 3307 return ancestorToTakeFocus.requestFocus(); 3308 } else { 3309 // There's nothing to focus. Clear and propagate through the 3310 // hierarchy, but don't attempt to place new focus. 3311 focused.clearFocusInternal(true, false); 3312 return true; 3313 } 3314 } 3315 } 3316 return false; 3317 } 3318 3319 /** 3320 * Find an ancestor of focused that wants focus after its descendants and is 3321 * focusable in touch mode. 3322 * @param focused The currently focused view. 3323 * @return An appropriate view, or null if no such view exists. 3324 */ 3325 private static ViewGroup findAncestorToTakeFocusInTouchMode(View focused) { 3326 ViewParent parent = focused.getParent(); 3327 while (parent instanceof ViewGroup) { 3328 final ViewGroup vgParent = (ViewGroup) parent; 3329 if (vgParent.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 3330 && vgParent.isFocusableInTouchMode()) { 3331 return vgParent; 3332 } 3333 if (vgParent.isRootNamespace()) { 3334 return null; 3335 } else { 3336 parent = vgParent.getParent(); 3337 } 3338 } 3339 return null; 3340 } 3341 3342 private boolean leaveTouchMode() { 3343 if (mView != null) { 3344 if (mView.hasFocus()) { 3345 View focusedView = mView.findFocus(); 3346 if (!(focusedView instanceof ViewGroup)) { 3347 // some view has focus, let it keep it 3348 return false; 3349 } else if (((ViewGroup) focusedView).getDescendantFocusability() != 3350 ViewGroup.FOCUS_AFTER_DESCENDANTS) { 3351 // some view group has focus, and doesn't prefer its children 3352 // over itself for focus, so let them keep it. 3353 return false; 3354 } 3355 } 3356 3357 // find the best view to give focus to in this brave new non-touch-mode 3358 // world 3359 final View focused = focusSearch(null, View.FOCUS_DOWN); 3360 if (focused != null) { 3361 return focused.requestFocus(View.FOCUS_DOWN); 3362 } 3363 } 3364 return false; 3365 } 3366 3367 /** 3368 * Base class for implementing a stage in the chain of responsibility 3369 * for processing input events. 3370 * <p> 3371 * Events are delivered to the stage by the {@link #deliver} method. The stage 3372 * then has the choice of finishing the event or forwarding it to the next stage. 3373 * </p> 3374 */ 3375 abstract class InputStage { 3376 private final InputStage mNext; 3377 3378 protected static final int FORWARD = 0; 3379 protected static final int FINISH_HANDLED = 1; 3380 protected static final int FINISH_NOT_HANDLED = 2; 3381 3382 /** 3383 * Creates an input stage. 3384 * @param next The next stage to which events should be forwarded. 3385 */ 3386 public InputStage(InputStage next) { 3387 mNext = next; 3388 } 3389 3390 /** 3391 * Delivers an event to be processed. 3392 */ 3393 public final void deliver(QueuedInputEvent q) { 3394 if ((q.mFlags & QueuedInputEvent.FLAG_FINISHED) != 0) { 3395 forward(q); 3396 } else if (mView == null || !mAdded) { 3397 Slog.w(TAG, "Dropping event due to root view being removed: " + q.mEvent); 3398 finish(q, false); 3399 } else if (!mAttachInfo.mHasWindowFocus && 3400 !q.mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER) && 3401 !isTerminalInputEvent(q.mEvent)) { 3402 // If this is a focused event and the window doesn't currently have input focus, 3403 // then drop this event. This could be an event that came back from the previous 3404 // stage but the window has lost focus in the meantime. 3405 Slog.w(TAG, "Dropping event due to no window focus: " + q.mEvent); 3406 finish(q, false); 3407 } else { 3408 apply(q, onProcess(q)); 3409 } 3410 } 3411 3412 /** 3413 * Marks the the input event as finished then forwards it to the next stage. 3414 */ 3415 protected void finish(QueuedInputEvent q, boolean handled) { 3416 q.mFlags |= QueuedInputEvent.FLAG_FINISHED; 3417 if (handled) { 3418 q.mFlags |= QueuedInputEvent.FLAG_FINISHED_HANDLED; 3419 } 3420 forward(q); 3421 } 3422 3423 /** 3424 * Forwards the event to the next stage. 3425 */ 3426 protected void forward(QueuedInputEvent q) { 3427 onDeliverToNext(q); 3428 } 3429 3430 /** 3431 * Applies a result code from {@link #onProcess} to the specified event. 3432 */ 3433 protected void apply(QueuedInputEvent q, int result) { 3434 if (result == FORWARD) { 3435 forward(q); 3436 } else if (result == FINISH_HANDLED) { 3437 finish(q, true); 3438 } else if (result == FINISH_NOT_HANDLED) { 3439 finish(q, false); 3440 } else { 3441 throw new IllegalArgumentException("Invalid result: " + result); 3442 } 3443 } 3444 3445 /** 3446 * Called when an event is ready to be processed. 3447 * @return A result code indicating how the event was handled. 3448 */ 3449 protected int onProcess(QueuedInputEvent q) { 3450 return FORWARD; 3451 } 3452 3453 /** 3454 * Called when an event is being delivered to the next stage. 3455 */ 3456 protected void onDeliverToNext(QueuedInputEvent q) { 3457 if (mNext != null) { 3458 mNext.deliver(q); 3459 } else { 3460 finishInputEvent(q); 3461 } 3462 } 3463 3464 void dump(String prefix, PrintWriter writer) { 3465 if (mNext != null) { 3466 mNext.dump(prefix, writer); 3467 } 3468 } 3469 } 3470 3471 /** 3472 * Base class for implementing an input pipeline stage that supports 3473 * asynchronous and out-of-order processing of input events. 3474 * <p> 3475 * In addition to what a normal input stage can do, an asynchronous 3476 * input stage may also defer an input event that has been delivered to it 3477 * and finish or forward it later. 3478 * </p> 3479 */ 3480 abstract class AsyncInputStage extends InputStage { 3481 private final String mTraceCounter; 3482 3483 private QueuedInputEvent mQueueHead; 3484 private QueuedInputEvent mQueueTail; 3485 private int mQueueLength; 3486 3487 protected static final int DEFER = 3; 3488 3489 /** 3490 * Creates an asynchronous input stage. 3491 * @param next The next stage to which events should be forwarded. 3492 * @param traceCounter The name of a counter to record the size of 3493 * the queue of pending events. 3494 */ 3495 public AsyncInputStage(InputStage next, String traceCounter) { 3496 super(next); 3497 mTraceCounter = traceCounter; 3498 } 3499 3500 /** 3501 * Marks the event as deferred, which is to say that it will be handled 3502 * asynchronously. The caller is responsible for calling {@link #forward} 3503 * or {@link #finish} later when it is done handling the event. 3504 */ 3505 protected void defer(QueuedInputEvent q) { 3506 q.mFlags |= QueuedInputEvent.FLAG_DEFERRED; 3507 enqueue(q); 3508 } 3509 3510 @Override 3511 protected void forward(QueuedInputEvent q) { 3512 // Clear the deferred flag. 3513 q.mFlags &= ~QueuedInputEvent.FLAG_DEFERRED; 3514 3515 // Fast path if the queue is empty. 3516 QueuedInputEvent curr = mQueueHead; 3517 if (curr == null) { 3518 super.forward(q); 3519 return; 3520 } 3521 3522 // Determine whether the event must be serialized behind any others 3523 // before it can be delivered to the next stage. This is done because 3524 // deferred events might be handled out of order by the stage. 3525 final int deviceId = q.mEvent.getDeviceId(); 3526 QueuedInputEvent prev = null; 3527 boolean blocked = false; 3528 while (curr != null && curr != q) { 3529 if (!blocked && deviceId == curr.mEvent.getDeviceId()) { 3530 blocked = true; 3531 } 3532 prev = curr; 3533 curr = curr.mNext; 3534 } 3535 3536 // If the event is blocked, then leave it in the queue to be delivered later. 3537 // Note that the event might not yet be in the queue if it was not previously 3538 // deferred so we will enqueue it if needed. 3539 if (blocked) { 3540 if (curr == null) { 3541 enqueue(q); 3542 } 3543 return; 3544 } 3545 3546 // The event is not blocked. Deliver it immediately. 3547 if (curr != null) { 3548 curr = curr.mNext; 3549 dequeue(q, prev); 3550 } 3551 super.forward(q); 3552 3553 // Dequeuing this event may have unblocked successors. Deliver them. 3554 while (curr != null) { 3555 if (deviceId == curr.mEvent.getDeviceId()) { 3556 if ((curr.mFlags & QueuedInputEvent.FLAG_DEFERRED) != 0) { 3557 break; 3558 } 3559 QueuedInputEvent next = curr.mNext; 3560 dequeue(curr, prev); 3561 super.forward(curr); 3562 curr = next; 3563 } else { 3564 prev = curr; 3565 curr = curr.mNext; 3566 } 3567 } 3568 } 3569 3570 @Override 3571 protected void apply(QueuedInputEvent q, int result) { 3572 if (result == DEFER) { 3573 defer(q); 3574 } else { 3575 super.apply(q, result); 3576 } 3577 } 3578 3579 private void enqueue(QueuedInputEvent q) { 3580 if (mQueueTail == null) { 3581 mQueueHead = q; 3582 mQueueTail = q; 3583 } else { 3584 mQueueTail.mNext = q; 3585 mQueueTail = q; 3586 } 3587 3588 mQueueLength += 1; 3589 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 3590 } 3591 3592 private void dequeue(QueuedInputEvent q, QueuedInputEvent prev) { 3593 if (prev == null) { 3594 mQueueHead = q.mNext; 3595 } else { 3596 prev.mNext = q.mNext; 3597 } 3598 if (mQueueTail == q) { 3599 mQueueTail = prev; 3600 } 3601 q.mNext = null; 3602 3603 mQueueLength -= 1; 3604 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 3605 } 3606 3607 @Override 3608 void dump(String prefix, PrintWriter writer) { 3609 writer.print(prefix); 3610 writer.print(getClass().getName()); 3611 writer.print(": mQueueLength="); 3612 writer.println(mQueueLength); 3613 3614 super.dump(prefix, writer); 3615 } 3616 } 3617 3618 /** 3619 * Delivers pre-ime input events to a native activity. 3620 * Does not support pointer events. 3621 */ 3622 final class NativePreImeInputStage extends AsyncInputStage 3623 implements InputQueue.FinishedInputEventCallback { 3624 public NativePreImeInputStage(InputStage next, String traceCounter) { 3625 super(next, traceCounter); 3626 } 3627 3628 @Override 3629 protected int onProcess(QueuedInputEvent q) { 3630 if (mInputQueue != null && q.mEvent instanceof KeyEvent) { 3631 mInputQueue.sendInputEvent(q.mEvent, q, true, this); 3632 return DEFER; 3633 } 3634 return FORWARD; 3635 } 3636 3637 @Override 3638 public void onFinishedInputEvent(Object token, boolean handled) { 3639 QueuedInputEvent q = (QueuedInputEvent)token; 3640 if (handled) { 3641 finish(q, true); 3642 return; 3643 } 3644 forward(q); 3645 } 3646 } 3647 3648 /** 3649 * Delivers pre-ime input events to the view hierarchy. 3650 * Does not support pointer events. 3651 */ 3652 final class ViewPreImeInputStage extends InputStage { 3653 public ViewPreImeInputStage(InputStage next) { 3654 super(next); 3655 } 3656 3657 @Override 3658 protected int onProcess(QueuedInputEvent q) { 3659 if (q.mEvent instanceof KeyEvent) { 3660 return processKeyEvent(q); 3661 } 3662 return FORWARD; 3663 } 3664 3665 private int processKeyEvent(QueuedInputEvent q) { 3666 final KeyEvent event = (KeyEvent)q.mEvent; 3667 if (mView.dispatchKeyEventPreIme(event)) { 3668 return FINISH_HANDLED; 3669 } 3670 return FORWARD; 3671 } 3672 } 3673 3674 /** 3675 * Delivers input events to the ime. 3676 * Does not support pointer events. 3677 */ 3678 final class ImeInputStage extends AsyncInputStage 3679 implements InputMethodManager.FinishedInputEventCallback { 3680 public ImeInputStage(InputStage next, String traceCounter) { 3681 super(next, traceCounter); 3682 } 3683 3684 @Override 3685 protected int onProcess(QueuedInputEvent q) { 3686 if (mLastWasImTarget && !isInLocalFocusMode()) { 3687 InputMethodManager imm = InputMethodManager.peekInstance(); 3688 if (imm != null) { 3689 final InputEvent event = q.mEvent; 3690 if (DEBUG_IMF) Log.v(TAG, "Sending input event to IME: " + event); 3691 int result = imm.dispatchInputEvent(event, q, this, mHandler); 3692 if (result == InputMethodManager.DISPATCH_HANDLED) { 3693 return FINISH_HANDLED; 3694 } else if (result == InputMethodManager.DISPATCH_NOT_HANDLED) { 3695 return FINISH_NOT_HANDLED; 3696 } else { 3697 return DEFER; // callback will be invoked later 3698 } 3699 } 3700 } 3701 return FORWARD; 3702 } 3703 3704 @Override 3705 public void onFinishedInputEvent(Object token, boolean handled) { 3706 QueuedInputEvent q = (QueuedInputEvent)token; 3707 if (handled) { 3708 finish(q, true); 3709 return; 3710 } 3711 forward(q); 3712 } 3713 } 3714 3715 /** 3716 * Performs early processing of post-ime input events. 3717 */ 3718 final class EarlyPostImeInputStage extends InputStage { 3719 public EarlyPostImeInputStage(InputStage next) { 3720 super(next); 3721 } 3722 3723 @Override 3724 protected int onProcess(QueuedInputEvent q) { 3725 if (q.mEvent instanceof KeyEvent) { 3726 return processKeyEvent(q); 3727 } else { 3728 final int source = q.mEvent.getSource(); 3729 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 3730 return processPointerEvent(q); 3731 } 3732 } 3733 return FORWARD; 3734 } 3735 3736 private int processKeyEvent(QueuedInputEvent q) { 3737 final KeyEvent event = (KeyEvent)q.mEvent; 3738 3739 // If the key's purpose is to exit touch mode then we consume it 3740 // and consider it handled. 3741 if (checkForLeavingTouchModeAndConsume(event)) { 3742 return FINISH_HANDLED; 3743 } 3744 3745 // Make sure the fallback event policy sees all keys that will be 3746 // delivered to the view hierarchy. 3747 mFallbackEventHandler.preDispatchKeyEvent(event); 3748 return FORWARD; 3749 } 3750 3751 private int processPointerEvent(QueuedInputEvent q) { 3752 final MotionEvent event = (MotionEvent)q.mEvent; 3753 3754 // Translate the pointer event for compatibility, if needed. 3755 if (mTranslator != null) { 3756 mTranslator.translateEventInScreenToAppWindow(event); 3757 } 3758 3759 // Enter touch mode on down or scroll. 3760 final int action = event.getAction(); 3761 if (action == MotionEvent.ACTION_DOWN || action == MotionEvent.ACTION_SCROLL) { 3762 ensureTouchMode(true); 3763 } 3764 3765 // Offset the scroll position. 3766 if (mCurScrollY != 0) { 3767 event.offsetLocation(0, mCurScrollY); 3768 } 3769 3770 // Remember the touch position for possible drag-initiation. 3771 if (event.isTouchEvent()) { 3772 mLastTouchPoint.x = event.getRawX(); 3773 mLastTouchPoint.y = event.getRawY(); 3774 } 3775 return FORWARD; 3776 } 3777 } 3778 3779 /** 3780 * Delivers post-ime input events to a native activity. 3781 */ 3782 final class NativePostImeInputStage extends AsyncInputStage 3783 implements InputQueue.FinishedInputEventCallback { 3784 public NativePostImeInputStage(InputStage next, String traceCounter) { 3785 super(next, traceCounter); 3786 } 3787 3788 @Override 3789 protected int onProcess(QueuedInputEvent q) { 3790 if (mInputQueue != null) { 3791 mInputQueue.sendInputEvent(q.mEvent, q, false, this); 3792 return DEFER; 3793 } 3794 return FORWARD; 3795 } 3796 3797 @Override 3798 public void onFinishedInputEvent(Object token, boolean handled) { 3799 QueuedInputEvent q = (QueuedInputEvent)token; 3800 if (handled) { 3801 finish(q, true); 3802 return; 3803 } 3804 forward(q); 3805 } 3806 } 3807 3808 /** 3809 * Delivers post-ime input events to the view hierarchy. 3810 */ 3811 final class ViewPostImeInputStage extends InputStage { 3812 public ViewPostImeInputStage(InputStage next) { 3813 super(next); 3814 } 3815 3816 @Override 3817 protected int onProcess(QueuedInputEvent q) { 3818 if (q.mEvent instanceof KeyEvent) { 3819 return processKeyEvent(q); 3820 } else { 3821 // If delivering a new non-key event, make sure the window is 3822 // now allowed to start updating. 3823 handleDispatchDoneAnimating(); 3824 final int source = q.mEvent.getSource(); 3825 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 3826 return processPointerEvent(q); 3827 } else if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 3828 return processTrackballEvent(q); 3829 } else { 3830 return processGenericMotionEvent(q); 3831 } 3832 } 3833 } 3834 3835 private int processKeyEvent(QueuedInputEvent q) { 3836 final KeyEvent event = (KeyEvent)q.mEvent; 3837 3838 if (event.getAction() != KeyEvent.ACTION_UP) { 3839 // If delivering a new key event, make sure the window is 3840 // now allowed to start updating. 3841 handleDispatchDoneAnimating(); 3842 } 3843 3844 // Deliver the key to the view hierarchy. 3845 if (mView.dispatchKeyEvent(event)) { 3846 return FINISH_HANDLED; 3847 } 3848 3849 // If the Control modifier is held, try to interpret the key as a shortcut. 3850 if (event.getAction() == KeyEvent.ACTION_DOWN 3851 && event.isCtrlPressed() 3852 && event.getRepeatCount() == 0 3853 && !KeyEvent.isModifierKey(event.getKeyCode())) { 3854 if (mView.dispatchKeyShortcutEvent(event)) { 3855 return FINISH_HANDLED; 3856 } 3857 } 3858 3859 // Apply the fallback event policy. 3860 if (mFallbackEventHandler.dispatchKeyEvent(event)) { 3861 return FINISH_HANDLED; 3862 } 3863 3864 // Handle automatic focus changes. 3865 if (event.getAction() == KeyEvent.ACTION_DOWN) { 3866 int direction = 0; 3867 switch (event.getKeyCode()) { 3868 case KeyEvent.KEYCODE_DPAD_LEFT: 3869 if (event.hasNoModifiers()) { 3870 direction = View.FOCUS_LEFT; 3871 } 3872 break; 3873 case KeyEvent.KEYCODE_DPAD_RIGHT: 3874 if (event.hasNoModifiers()) { 3875 direction = View.FOCUS_RIGHT; 3876 } 3877 break; 3878 case KeyEvent.KEYCODE_DPAD_UP: 3879 if (event.hasNoModifiers()) { 3880 direction = View.FOCUS_UP; 3881 } 3882 break; 3883 case KeyEvent.KEYCODE_DPAD_DOWN: 3884 if (event.hasNoModifiers()) { 3885 direction = View.FOCUS_DOWN; 3886 } 3887 break; 3888 case KeyEvent.KEYCODE_TAB: 3889 if (event.hasNoModifiers()) { 3890 direction = View.FOCUS_FORWARD; 3891 } else if (event.hasModifiers(KeyEvent.META_SHIFT_ON)) { 3892 direction = View.FOCUS_BACKWARD; 3893 } 3894 break; 3895 } 3896 if (direction != 0) { 3897 View focused = mView.findFocus(); 3898 if (focused != null) { 3899 View v = focused.focusSearch(direction); 3900 if (v != null && v != focused) { 3901 // do the math the get the interesting rect 3902 // of previous focused into the coord system of 3903 // newly focused view 3904 focused.getFocusedRect(mTempRect); 3905 if (mView instanceof ViewGroup) { 3906 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 3907 focused, mTempRect); 3908 ((ViewGroup) mView).offsetRectIntoDescendantCoords( 3909 v, mTempRect); 3910 } 3911 if (v.requestFocus(direction, mTempRect)) { 3912 playSoundEffect(SoundEffectConstants 3913 .getContantForFocusDirection(direction)); 3914 return FINISH_HANDLED; 3915 } 3916 } 3917 3918 // Give the focused view a last chance to handle the dpad key. 3919 if (mView.dispatchUnhandledMove(focused, direction)) { 3920 return FINISH_HANDLED; 3921 } 3922 } else { 3923 // find the best view to give focus to in this non-touch-mode with no-focus 3924 View v = focusSearch(null, direction); 3925 if (v != null && v.requestFocus(direction)) { 3926 return FINISH_HANDLED; 3927 } 3928 } 3929 } 3930 } 3931 return FORWARD; 3932 } 3933 3934 private int processPointerEvent(QueuedInputEvent q) { 3935 final MotionEvent event = (MotionEvent)q.mEvent; 3936 3937 if (mView.dispatchPointerEvent(event)) { 3938 return FINISH_HANDLED; 3939 } 3940 return FORWARD; 3941 } 3942 3943 private int processTrackballEvent(QueuedInputEvent q) { 3944 final MotionEvent event = (MotionEvent)q.mEvent; 3945 3946 if (mView.dispatchTrackballEvent(event)) { 3947 return FINISH_HANDLED; 3948 } 3949 return FORWARD; 3950 } 3951 3952 private int processGenericMotionEvent(QueuedInputEvent q) { 3953 final MotionEvent event = (MotionEvent)q.mEvent; 3954 3955 // Deliver the event to the view. 3956 if (mView.dispatchGenericMotionEvent(event)) { 3957 return FINISH_HANDLED; 3958 } 3959 return FORWARD; 3960 } 3961 } 3962 3963 /** 3964 * Performs synthesis of new input events from unhandled input events. 3965 */ 3966 final class SyntheticInputStage extends InputStage { 3967 private final SyntheticTrackballHandler mTrackball = new SyntheticTrackballHandler(); 3968 private final SyntheticJoystickHandler mJoystick = new SyntheticJoystickHandler(); 3969 private final SyntheticTouchNavigationHandler mTouchNavigation = 3970 new SyntheticTouchNavigationHandler(); 3971 private final SyntheticKeyHandler mKeys = new SyntheticKeyHandler(); 3972 3973 public SyntheticInputStage() { 3974 super(null); 3975 } 3976 3977 @Override 3978 protected int onProcess(QueuedInputEvent q) { 3979 q.mFlags |= QueuedInputEvent.FLAG_RESYNTHESIZED; 3980 if (q.mEvent instanceof MotionEvent) { 3981 final MotionEvent event = (MotionEvent)q.mEvent; 3982 final int source = event.getSource(); 3983 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 3984 mTrackball.process(event); 3985 return FINISH_HANDLED; 3986 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 3987 mJoystick.process(event); 3988 return FINISH_HANDLED; 3989 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 3990 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 3991 mTouchNavigation.process(event); 3992 return FINISH_HANDLED; 3993 } 3994 } else if (q.mEvent instanceof KeyEvent) { 3995 if (mKeys.process((KeyEvent) q.mEvent)) { 3996 return FINISH_HANDLED; 3997 } 3998 } 3999 4000 return FORWARD; 4001 } 4002 4003 @Override 4004 protected void onDeliverToNext(QueuedInputEvent q) { 4005 if ((q.mFlags & QueuedInputEvent.FLAG_RESYNTHESIZED) == 0) { 4006 // Cancel related synthetic events if any prior stage has handled the event. 4007 if (q.mEvent instanceof MotionEvent) { 4008 final MotionEvent event = (MotionEvent)q.mEvent; 4009 final int source = event.getSource(); 4010 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 4011 mTrackball.cancel(event); 4012 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 4013 mJoystick.cancel(event); 4014 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 4015 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 4016 mTouchNavigation.cancel(event); 4017 } 4018 } 4019 } 4020 super.onDeliverToNext(q); 4021 } 4022 } 4023 4024 /** 4025 * Creates dpad events from unhandled trackball movements. 4026 */ 4027 final class SyntheticTrackballHandler { 4028 private final TrackballAxis mX = new TrackballAxis(); 4029 private final TrackballAxis mY = new TrackballAxis(); 4030 private long mLastTime; 4031 4032 public void process(MotionEvent event) { 4033 // Translate the trackball event into DPAD keys and try to deliver those. 4034 long curTime = SystemClock.uptimeMillis(); 4035 if ((mLastTime + MAX_TRACKBALL_DELAY) < curTime) { 4036 // It has been too long since the last movement, 4037 // so restart at the beginning. 4038 mX.reset(0); 4039 mY.reset(0); 4040 mLastTime = curTime; 4041 } 4042 4043 final int action = event.getAction(); 4044 final int metaState = event.getMetaState(); 4045 switch (action) { 4046 case MotionEvent.ACTION_DOWN: 4047 mX.reset(2); 4048 mY.reset(2); 4049 enqueueInputEvent(new KeyEvent(curTime, curTime, 4050 KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 4051 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4052 InputDevice.SOURCE_KEYBOARD)); 4053 break; 4054 case MotionEvent.ACTION_UP: 4055 mX.reset(2); 4056 mY.reset(2); 4057 enqueueInputEvent(new KeyEvent(curTime, curTime, 4058 KeyEvent.ACTION_UP, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 4059 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4060 InputDevice.SOURCE_KEYBOARD)); 4061 break; 4062 } 4063 4064 if (DEBUG_TRACKBALL) Log.v(TAG, "TB X=" + mX.position + " step=" 4065 + mX.step + " dir=" + mX.dir + " acc=" + mX.acceleration 4066 + " move=" + event.getX() 4067 + " / Y=" + mY.position + " step=" 4068 + mY.step + " dir=" + mY.dir + " acc=" + mY.acceleration 4069 + " move=" + event.getY()); 4070 final float xOff = mX.collect(event.getX(), event.getEventTime(), "X"); 4071 final float yOff = mY.collect(event.getY(), event.getEventTime(), "Y"); 4072 4073 // Generate DPAD events based on the trackball movement. 4074 // We pick the axis that has moved the most as the direction of 4075 // the DPAD. When we generate DPAD events for one axis, then the 4076 // other axis is reset -- we don't want to perform DPAD jumps due 4077 // to slight movements in the trackball when making major movements 4078 // along the other axis. 4079 int keycode = 0; 4080 int movement = 0; 4081 float accel = 1; 4082 if (xOff > yOff) { 4083 movement = mX.generate(); 4084 if (movement != 0) { 4085 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_RIGHT 4086 : KeyEvent.KEYCODE_DPAD_LEFT; 4087 accel = mX.acceleration; 4088 mY.reset(2); 4089 } 4090 } else if (yOff > 0) { 4091 movement = mY.generate(); 4092 if (movement != 0) { 4093 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_DOWN 4094 : KeyEvent.KEYCODE_DPAD_UP; 4095 accel = mY.acceleration; 4096 mX.reset(2); 4097 } 4098 } 4099 4100 if (keycode != 0) { 4101 if (movement < 0) movement = -movement; 4102 int accelMovement = (int)(movement * accel); 4103 if (DEBUG_TRACKBALL) Log.v(TAG, "Move: movement=" + movement 4104 + " accelMovement=" + accelMovement 4105 + " accel=" + accel); 4106 if (accelMovement > movement) { 4107 if (DEBUG_TRACKBALL) Log.v(TAG, "Delivering fake DPAD: " 4108 + keycode); 4109 movement--; 4110 int repeatCount = accelMovement - movement; 4111 enqueueInputEvent(new KeyEvent(curTime, curTime, 4112 KeyEvent.ACTION_MULTIPLE, keycode, repeatCount, metaState, 4113 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4114 InputDevice.SOURCE_KEYBOARD)); 4115 } 4116 while (movement > 0) { 4117 if (DEBUG_TRACKBALL) Log.v(TAG, "Delivering fake DPAD: " 4118 + keycode); 4119 movement--; 4120 curTime = SystemClock.uptimeMillis(); 4121 enqueueInputEvent(new KeyEvent(curTime, curTime, 4122 KeyEvent.ACTION_DOWN, keycode, 0, metaState, 4123 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4124 InputDevice.SOURCE_KEYBOARD)); 4125 enqueueInputEvent(new KeyEvent(curTime, curTime, 4126 KeyEvent.ACTION_UP, keycode, 0, metaState, 4127 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4128 InputDevice.SOURCE_KEYBOARD)); 4129 } 4130 mLastTime = curTime; 4131 } 4132 } 4133 4134 public void cancel(MotionEvent event) { 4135 mLastTime = Integer.MIN_VALUE; 4136 4137 // If we reach this, we consumed a trackball event. 4138 // Because we will not translate the trackball event into a key event, 4139 // touch mode will not exit, so we exit touch mode here. 4140 if (mView != null && mAdded) { 4141 ensureTouchMode(false); 4142 } 4143 } 4144 } 4145 4146 /** 4147 * Maintains state information for a single trackball axis, generating 4148 * discrete (DPAD) movements based on raw trackball motion. 4149 */ 4150 static final class TrackballAxis { 4151 /** 4152 * The maximum amount of acceleration we will apply. 4153 */ 4154 static final float MAX_ACCELERATION = 20; 4155 4156 /** 4157 * The maximum amount of time (in milliseconds) between events in order 4158 * for us to consider the user to be doing fast trackball movements, 4159 * and thus apply an acceleration. 4160 */ 4161 static final long FAST_MOVE_TIME = 150; 4162 4163 /** 4164 * Scaling factor to the time (in milliseconds) between events to how 4165 * much to multiple/divide the current acceleration. When movement 4166 * is < FAST_MOVE_TIME this multiplies the acceleration; when > 4167 * FAST_MOVE_TIME it divides it. 4168 */ 4169 static final float ACCEL_MOVE_SCALING_FACTOR = (1.0f/40); 4170 4171 static final float FIRST_MOVEMENT_THRESHOLD = 0.5f; 4172 static final float SECOND_CUMULATIVE_MOVEMENT_THRESHOLD = 2.0f; 4173 static final float SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD = 1.0f; 4174 4175 float position; 4176 float acceleration = 1; 4177 long lastMoveTime = 0; 4178 int step; 4179 int dir; 4180 int nonAccelMovement; 4181 4182 void reset(int _step) { 4183 position = 0; 4184 acceleration = 1; 4185 lastMoveTime = 0; 4186 step = _step; 4187 dir = 0; 4188 } 4189 4190 /** 4191 * Add trackball movement into the state. If the direction of movement 4192 * has been reversed, the state is reset before adding the 4193 * movement (so that you don't have to compensate for any previously 4194 * collected movement before see the result of the movement in the 4195 * new direction). 4196 * 4197 * @return Returns the absolute value of the amount of movement 4198 * collected so far. 4199 */ 4200 float collect(float off, long time, String axis) { 4201 long normTime; 4202 if (off > 0) { 4203 normTime = (long)(off * FAST_MOVE_TIME); 4204 if (dir < 0) { 4205 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to positive!"); 4206 position = 0; 4207 step = 0; 4208 acceleration = 1; 4209 lastMoveTime = 0; 4210 } 4211 dir = 1; 4212 } else if (off < 0) { 4213 normTime = (long)((-off) * FAST_MOVE_TIME); 4214 if (dir > 0) { 4215 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to negative!"); 4216 position = 0; 4217 step = 0; 4218 acceleration = 1; 4219 lastMoveTime = 0; 4220 } 4221 dir = -1; 4222 } else { 4223 normTime = 0; 4224 } 4225 4226 // The number of milliseconds between each movement that is 4227 // considered "normal" and will not result in any acceleration 4228 // or deceleration, scaled by the offset we have here. 4229 if (normTime > 0) { 4230 long delta = time - lastMoveTime; 4231 lastMoveTime = time; 4232 float acc = acceleration; 4233 if (delta < normTime) { 4234 // The user is scrolling rapidly, so increase acceleration. 4235 float scale = (normTime-delta) * ACCEL_MOVE_SCALING_FACTOR; 4236 if (scale > 1) acc *= scale; 4237 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " accelerate: off=" 4238 + off + " normTime=" + normTime + " delta=" + delta 4239 + " scale=" + scale + " acc=" + acc); 4240 acceleration = acc < MAX_ACCELERATION ? acc : MAX_ACCELERATION; 4241 } else { 4242 // The user is scrolling slowly, so decrease acceleration. 4243 float scale = (delta-normTime) * ACCEL_MOVE_SCALING_FACTOR; 4244 if (scale > 1) acc /= scale; 4245 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " deccelerate: off=" 4246 + off + " normTime=" + normTime + " delta=" + delta 4247 + " scale=" + scale + " acc=" + acc); 4248 acceleration = acc > 1 ? acc : 1; 4249 } 4250 } 4251 position += off; 4252 return Math.abs(position); 4253 } 4254 4255 /** 4256 * Generate the number of discrete movement events appropriate for 4257 * the currently collected trackball movement. 4258 * 4259 * @return Returns the number of discrete movements, either positive 4260 * or negative, or 0 if there is not enough trackball movement yet 4261 * for a discrete movement. 4262 */ 4263 int generate() { 4264 int movement = 0; 4265 nonAccelMovement = 0; 4266 do { 4267 final int dir = position >= 0 ? 1 : -1; 4268 switch (step) { 4269 // If we are going to execute the first step, then we want 4270 // to do this as soon as possible instead of waiting for 4271 // a full movement, in order to make things look responsive. 4272 case 0: 4273 if (Math.abs(position) < FIRST_MOVEMENT_THRESHOLD) { 4274 return movement; 4275 } 4276 movement += dir; 4277 nonAccelMovement += dir; 4278 step = 1; 4279 break; 4280 // If we have generated the first movement, then we need 4281 // to wait for the second complete trackball motion before 4282 // generating the second discrete movement. 4283 case 1: 4284 if (Math.abs(position) < SECOND_CUMULATIVE_MOVEMENT_THRESHOLD) { 4285 return movement; 4286 } 4287 movement += dir; 4288 nonAccelMovement += dir; 4289 position -= SECOND_CUMULATIVE_MOVEMENT_THRESHOLD * dir; 4290 step = 2; 4291 break; 4292 // After the first two, we generate discrete movements 4293 // consistently with the trackball, applying an acceleration 4294 // if the trackball is moving quickly. This is a simple 4295 // acceleration on top of what we already compute based 4296 // on how quickly the wheel is being turned, to apply 4297 // a longer increasing acceleration to continuous movement 4298 // in one direction. 4299 default: 4300 if (Math.abs(position) < SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD) { 4301 return movement; 4302 } 4303 movement += dir; 4304 position -= dir * SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD; 4305 float acc = acceleration; 4306 acc *= 1.1f; 4307 acceleration = acc < MAX_ACCELERATION ? acc : acceleration; 4308 break; 4309 } 4310 } while (true); 4311 } 4312 } 4313 4314 /** 4315 * Creates dpad events from unhandled joystick movements. 4316 */ 4317 final class SyntheticJoystickHandler extends Handler { 4318 private final static int MSG_ENQUEUE_X_AXIS_KEY_REPEAT = 1; 4319 private final static int MSG_ENQUEUE_Y_AXIS_KEY_REPEAT = 2; 4320 4321 private int mLastXDirection; 4322 private int mLastYDirection; 4323 private int mLastXKeyCode; 4324 private int mLastYKeyCode; 4325 4326 public SyntheticJoystickHandler() { 4327 super(true); 4328 } 4329 4330 @Override 4331 public void handleMessage(Message msg) { 4332 switch (msg.what) { 4333 case MSG_ENQUEUE_X_AXIS_KEY_REPEAT: 4334 case MSG_ENQUEUE_Y_AXIS_KEY_REPEAT: { 4335 KeyEvent oldEvent = (KeyEvent)msg.obj; 4336 KeyEvent e = KeyEvent.changeTimeRepeat(oldEvent, 4337 SystemClock.uptimeMillis(), 4338 oldEvent.getRepeatCount() + 1); 4339 if (mAttachInfo.mHasWindowFocus) { 4340 enqueueInputEvent(e); 4341 Message m = obtainMessage(msg.what, e); 4342 m.setAsynchronous(true); 4343 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatDelay()); 4344 } 4345 } break; 4346 } 4347 } 4348 4349 public void process(MotionEvent event) { 4350 update(event, true); 4351 } 4352 4353 public void cancel(MotionEvent event) { 4354 update(event, false); 4355 } 4356 4357 private void update(MotionEvent event, boolean synthesizeNewKeys) { 4358 final long time = event.getEventTime(); 4359 final int metaState = event.getMetaState(); 4360 final int deviceId = event.getDeviceId(); 4361 final int source = event.getSource(); 4362 4363 int xDirection = joystickAxisValueToDirection( 4364 event.getAxisValue(MotionEvent.AXIS_HAT_X)); 4365 if (xDirection == 0) { 4366 xDirection = joystickAxisValueToDirection(event.getX()); 4367 } 4368 4369 int yDirection = joystickAxisValueToDirection( 4370 event.getAxisValue(MotionEvent.AXIS_HAT_Y)); 4371 if (yDirection == 0) { 4372 yDirection = joystickAxisValueToDirection(event.getY()); 4373 } 4374 4375 if (xDirection != mLastXDirection) { 4376 if (mLastXKeyCode != 0) { 4377 removeMessages(MSG_ENQUEUE_X_AXIS_KEY_REPEAT); 4378 enqueueInputEvent(new KeyEvent(time, time, 4379 KeyEvent.ACTION_UP, mLastXKeyCode, 0, metaState, 4380 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4381 mLastXKeyCode = 0; 4382 } 4383 4384 mLastXDirection = xDirection; 4385 4386 if (xDirection != 0 && synthesizeNewKeys) { 4387 mLastXKeyCode = xDirection > 0 4388 ? KeyEvent.KEYCODE_DPAD_RIGHT : KeyEvent.KEYCODE_DPAD_LEFT; 4389 final KeyEvent e = new KeyEvent(time, time, 4390 KeyEvent.ACTION_DOWN, mLastXKeyCode, 0, metaState, 4391 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4392 enqueueInputEvent(e); 4393 Message m = obtainMessage(MSG_ENQUEUE_X_AXIS_KEY_REPEAT, e); 4394 m.setAsynchronous(true); 4395 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4396 } 4397 } 4398 4399 if (yDirection != mLastYDirection) { 4400 if (mLastYKeyCode != 0) { 4401 removeMessages(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT); 4402 enqueueInputEvent(new KeyEvent(time, time, 4403 KeyEvent.ACTION_UP, mLastYKeyCode, 0, metaState, 4404 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4405 mLastYKeyCode = 0; 4406 } 4407 4408 mLastYDirection = yDirection; 4409 4410 if (yDirection != 0 && synthesizeNewKeys) { 4411 mLastYKeyCode = yDirection > 0 4412 ? KeyEvent.KEYCODE_DPAD_DOWN : KeyEvent.KEYCODE_DPAD_UP; 4413 final KeyEvent e = new KeyEvent(time, time, 4414 KeyEvent.ACTION_DOWN, mLastYKeyCode, 0, metaState, 4415 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4416 enqueueInputEvent(e); 4417 Message m = obtainMessage(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT, e); 4418 m.setAsynchronous(true); 4419 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4420 } 4421 } 4422 } 4423 4424 private int joystickAxisValueToDirection(float value) { 4425 if (value >= 0.5f) { 4426 return 1; 4427 } else if (value <= -0.5f) { 4428 return -1; 4429 } else { 4430 return 0; 4431 } 4432 } 4433 } 4434 4435 /** 4436 * Creates dpad events from unhandled touch navigation movements. 4437 */ 4438 final class SyntheticTouchNavigationHandler extends Handler { 4439 private static final String LOCAL_TAG = "SyntheticTouchNavigationHandler"; 4440 private static final boolean LOCAL_DEBUG = false; 4441 4442 // Assumed nominal width and height in millimeters of a touch navigation pad, 4443 // if no resolution information is available from the input system. 4444 private static final float DEFAULT_WIDTH_MILLIMETERS = 48; 4445 private static final float DEFAULT_HEIGHT_MILLIMETERS = 48; 4446 4447 /* TODO: These constants should eventually be moved to ViewConfiguration. */ 4448 4449 // The nominal distance traveled to move by one unit. 4450 private static final int TICK_DISTANCE_MILLIMETERS = 12; 4451 4452 // Minimum and maximum fling velocity in ticks per second. 4453 // The minimum velocity should be set such that we perform enough ticks per 4454 // second that the fling appears to be fluid. For example, if we set the minimum 4455 // to 2 ticks per second, then there may be up to half a second delay between the next 4456 // to last and last ticks which is noticeably discrete and jerky. This value should 4457 // probably not be set to anything less than about 4. 4458 // If fling accuracy is a problem then consider tuning the tick distance instead. 4459 private static final float MIN_FLING_VELOCITY_TICKS_PER_SECOND = 6f; 4460 private static final float MAX_FLING_VELOCITY_TICKS_PER_SECOND = 20f; 4461 4462 // Fling velocity decay factor applied after each new key is emitted. 4463 // This parameter controls the deceleration and overall duration of the fling. 4464 // The fling stops automatically when its velocity drops below the minimum 4465 // fling velocity defined above. 4466 private static final float FLING_TICK_DECAY = 0.8f; 4467 4468 /* The input device that we are tracking. */ 4469 4470 private int mCurrentDeviceId = -1; 4471 private int mCurrentSource; 4472 private boolean mCurrentDeviceSupported; 4473 4474 /* Configuration for the current input device. */ 4475 4476 // The scaled tick distance. A movement of this amount should generally translate 4477 // into a single dpad event in a given direction. 4478 private float mConfigTickDistance; 4479 4480 // The minimum and maximum scaled fling velocity. 4481 private float mConfigMinFlingVelocity; 4482 private float mConfigMaxFlingVelocity; 4483 4484 /* Tracking state. */ 4485 4486 // The velocity tracker for detecting flings. 4487 private VelocityTracker mVelocityTracker; 4488 4489 // The active pointer id, or -1 if none. 4490 private int mActivePointerId = -1; 4491 4492 // Time and location where tracking started. 4493 private long mStartTime; 4494 private float mStartX; 4495 private float mStartY; 4496 4497 // Most recently observed position. 4498 private float mLastX; 4499 private float mLastY; 4500 4501 // Accumulated movement delta since the last direction key was sent. 4502 private float mAccumulatedX; 4503 private float mAccumulatedY; 4504 4505 // Set to true if any movement was delivered to the app. 4506 // Implies that tap slop was exceeded. 4507 private boolean mConsumedMovement; 4508 4509 // The most recently sent key down event. 4510 // The keycode remains set until the direction changes or a fling ends 4511 // so that repeated key events may be generated as required. 4512 private long mPendingKeyDownTime; 4513 private int mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 4514 private int mPendingKeyRepeatCount; 4515 private int mPendingKeyMetaState; 4516 4517 // The current fling velocity while a fling is in progress. 4518 private boolean mFlinging; 4519 private float mFlingVelocity; 4520 4521 // The last time a confirm key was pressed on the touch nav device 4522 private long mLastConfirmKeyTime = Long.MAX_VALUE; 4523 4524 public SyntheticTouchNavigationHandler() { 4525 super(true); 4526 } 4527 4528 public void process(MotionEvent event) { 4529 // Update the current device information. 4530 final long time = event.getEventTime(); 4531 final int deviceId = event.getDeviceId(); 4532 final int source = event.getSource(); 4533 if (mCurrentDeviceId != deviceId || mCurrentSource != source) { 4534 finishKeys(time); 4535 finishTracking(time); 4536 mCurrentDeviceId = deviceId; 4537 mCurrentSource = source; 4538 mCurrentDeviceSupported = false; 4539 InputDevice device = event.getDevice(); 4540 if (device != null) { 4541 // In order to support an input device, we must know certain 4542 // characteristics about it, such as its size and resolution. 4543 InputDevice.MotionRange xRange = device.getMotionRange(MotionEvent.AXIS_X); 4544 InputDevice.MotionRange yRange = device.getMotionRange(MotionEvent.AXIS_Y); 4545 if (xRange != null && yRange != null) { 4546 mCurrentDeviceSupported = true; 4547 4548 // Infer the resolution if it not actually known. 4549 float xRes = xRange.getResolution(); 4550 if (xRes <= 0) { 4551 xRes = xRange.getRange() / DEFAULT_WIDTH_MILLIMETERS; 4552 } 4553 float yRes = yRange.getResolution(); 4554 if (yRes <= 0) { 4555 yRes = yRange.getRange() / DEFAULT_HEIGHT_MILLIMETERS; 4556 } 4557 float nominalRes = (xRes + yRes) * 0.5f; 4558 4559 // Precompute all of the configuration thresholds we will need. 4560 mConfigTickDistance = TICK_DISTANCE_MILLIMETERS * nominalRes; 4561 mConfigMinFlingVelocity = 4562 MIN_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 4563 mConfigMaxFlingVelocity = 4564 MAX_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 4565 4566 if (LOCAL_DEBUG) { 4567 Log.d(LOCAL_TAG, "Configured device " + mCurrentDeviceId 4568 + " (" + Integer.toHexString(mCurrentSource) + "): " 4569 + ", mConfigTickDistance=" + mConfigTickDistance 4570 + ", mConfigMinFlingVelocity=" + mConfigMinFlingVelocity 4571 + ", mConfigMaxFlingVelocity=" + mConfigMaxFlingVelocity); 4572 } 4573 } 4574 } 4575 } 4576 if (!mCurrentDeviceSupported) { 4577 return; 4578 } 4579 4580 // Handle the event. 4581 final int action = event.getActionMasked(); 4582 switch (action) { 4583 case MotionEvent.ACTION_DOWN: { 4584 boolean caughtFling = mFlinging; 4585 finishKeys(time); 4586 finishTracking(time); 4587 mActivePointerId = event.getPointerId(0); 4588 mVelocityTracker = VelocityTracker.obtain(); 4589 mVelocityTracker.addMovement(event); 4590 mStartTime = time; 4591 mStartX = event.getX(); 4592 mStartY = event.getY(); 4593 mLastX = mStartX; 4594 mLastY = mStartY; 4595 mAccumulatedX = 0; 4596 mAccumulatedY = 0; 4597 4598 // If we caught a fling, then pretend that the tap slop has already 4599 // been exceeded to suppress taps whose only purpose is to stop the fling. 4600 mConsumedMovement = caughtFling; 4601 break; 4602 } 4603 4604 case MotionEvent.ACTION_MOVE: 4605 case MotionEvent.ACTION_UP: { 4606 if (mActivePointerId < 0) { 4607 break; 4608 } 4609 final int index = event.findPointerIndex(mActivePointerId); 4610 if (index < 0) { 4611 finishKeys(time); 4612 finishTracking(time); 4613 break; 4614 } 4615 4616 mVelocityTracker.addMovement(event); 4617 final float x = event.getX(index); 4618 final float y = event.getY(index); 4619 mAccumulatedX += x - mLastX; 4620 mAccumulatedY += y - mLastY; 4621 mLastX = x; 4622 mLastY = y; 4623 4624 // Consume any accumulated movement so far. 4625 final int metaState = event.getMetaState(); 4626 consumeAccumulatedMovement(time, metaState); 4627 4628 // Detect taps and flings. 4629 if (action == MotionEvent.ACTION_UP) { 4630 if (mConsumedMovement && mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 4631 // It might be a fling. 4632 mVelocityTracker.computeCurrentVelocity(1000, mConfigMaxFlingVelocity); 4633 final float vx = mVelocityTracker.getXVelocity(mActivePointerId); 4634 final float vy = mVelocityTracker.getYVelocity(mActivePointerId); 4635 if (!startFling(time, vx, vy)) { 4636 finishKeys(time); 4637 } 4638 } 4639 finishTracking(time); 4640 } 4641 break; 4642 } 4643 4644 case MotionEvent.ACTION_CANCEL: { 4645 finishKeys(time); 4646 finishTracking(time); 4647 break; 4648 } 4649 } 4650 } 4651 4652 public void cancel(MotionEvent event) { 4653 if (mCurrentDeviceId == event.getDeviceId() 4654 && mCurrentSource == event.getSource()) { 4655 final long time = event.getEventTime(); 4656 finishKeys(time); 4657 finishTracking(time); 4658 } 4659 } 4660 4661 private void finishKeys(long time) { 4662 cancelFling(); 4663 sendKeyUp(time); 4664 } 4665 4666 private void finishTracking(long time) { 4667 if (mActivePointerId >= 0) { 4668 mActivePointerId = -1; 4669 mVelocityTracker.recycle(); 4670 mVelocityTracker = null; 4671 } 4672 } 4673 4674 private void consumeAccumulatedMovement(long time, int metaState) { 4675 final float absX = Math.abs(mAccumulatedX); 4676 final float absY = Math.abs(mAccumulatedY); 4677 if (absX >= absY) { 4678 if (absX >= mConfigTickDistance) { 4679 mAccumulatedX = consumeAccumulatedMovement(time, metaState, mAccumulatedX, 4680 KeyEvent.KEYCODE_DPAD_LEFT, KeyEvent.KEYCODE_DPAD_RIGHT); 4681 mAccumulatedY = 0; 4682 mConsumedMovement = true; 4683 } 4684 } else { 4685 if (absY >= mConfigTickDistance) { 4686 mAccumulatedY = consumeAccumulatedMovement(time, metaState, mAccumulatedY, 4687 KeyEvent.KEYCODE_DPAD_UP, KeyEvent.KEYCODE_DPAD_DOWN); 4688 mAccumulatedX = 0; 4689 mConsumedMovement = true; 4690 } 4691 } 4692 } 4693 4694 private float consumeAccumulatedMovement(long time, int metaState, 4695 float accumulator, int negativeKeyCode, int positiveKeyCode) { 4696 while (accumulator <= -mConfigTickDistance) { 4697 sendKeyDownOrRepeat(time, negativeKeyCode, metaState); 4698 accumulator += mConfigTickDistance; 4699 } 4700 while (accumulator >= mConfigTickDistance) { 4701 sendKeyDownOrRepeat(time, positiveKeyCode, metaState); 4702 accumulator -= mConfigTickDistance; 4703 } 4704 return accumulator; 4705 } 4706 4707 private void sendKeyDownOrRepeat(long time, int keyCode, int metaState) { 4708 if (mPendingKeyCode != keyCode) { 4709 sendKeyUp(time); 4710 mPendingKeyDownTime = time; 4711 mPendingKeyCode = keyCode; 4712 mPendingKeyRepeatCount = 0; 4713 } else { 4714 mPendingKeyRepeatCount += 1; 4715 } 4716 mPendingKeyMetaState = metaState; 4717 4718 // Note: Normally we would pass FLAG_LONG_PRESS when the repeat count is 1 4719 // but it doesn't quite make sense when simulating the events in this way. 4720 if (LOCAL_DEBUG) { 4721 Log.d(LOCAL_TAG, "Sending key down: keyCode=" + mPendingKeyCode 4722 + ", repeatCount=" + mPendingKeyRepeatCount 4723 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 4724 } 4725 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 4726 KeyEvent.ACTION_DOWN, mPendingKeyCode, mPendingKeyRepeatCount, 4727 mPendingKeyMetaState, mCurrentDeviceId, 4728 KeyEvent.FLAG_FALLBACK, mCurrentSource)); 4729 } 4730 4731 private void sendKeyUp(long time) { 4732 if (mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 4733 if (LOCAL_DEBUG) { 4734 Log.d(LOCAL_TAG, "Sending key up: keyCode=" + mPendingKeyCode 4735 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 4736 } 4737 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 4738 KeyEvent.ACTION_UP, mPendingKeyCode, 0, mPendingKeyMetaState, 4739 mCurrentDeviceId, 0, KeyEvent.FLAG_FALLBACK, 4740 mCurrentSource)); 4741 mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 4742 } 4743 } 4744 4745 private boolean startFling(long time, float vx, float vy) { 4746 if (LOCAL_DEBUG) { 4747 Log.d(LOCAL_TAG, "Considering fling: vx=" + vx + ", vy=" + vy 4748 + ", min=" + mConfigMinFlingVelocity); 4749 } 4750 4751 // Flings must be oriented in the same direction as the preceding movements. 4752 switch (mPendingKeyCode) { 4753 case KeyEvent.KEYCODE_DPAD_LEFT: 4754 if (-vx >= mConfigMinFlingVelocity 4755 && Math.abs(vy) < mConfigMinFlingVelocity) { 4756 mFlingVelocity = -vx; 4757 break; 4758 } 4759 return false; 4760 4761 case KeyEvent.KEYCODE_DPAD_RIGHT: 4762 if (vx >= mConfigMinFlingVelocity 4763 && Math.abs(vy) < mConfigMinFlingVelocity) { 4764 mFlingVelocity = vx; 4765 break; 4766 } 4767 return false; 4768 4769 case KeyEvent.KEYCODE_DPAD_UP: 4770 if (-vy >= mConfigMinFlingVelocity 4771 && Math.abs(vx) < mConfigMinFlingVelocity) { 4772 mFlingVelocity = -vy; 4773 break; 4774 } 4775 return false; 4776 4777 case KeyEvent.KEYCODE_DPAD_DOWN: 4778 if (vy >= mConfigMinFlingVelocity 4779 && Math.abs(vx) < mConfigMinFlingVelocity) { 4780 mFlingVelocity = vy; 4781 break; 4782 } 4783 return false; 4784 } 4785 4786 // Post the first fling event. 4787 mFlinging = postFling(time); 4788 return mFlinging; 4789 } 4790 4791 private boolean postFling(long time) { 4792 // The idea here is to estimate the time when the pointer would have 4793 // traveled one tick distance unit given the current fling velocity. 4794 // This effect creates continuity of motion. 4795 if (mFlingVelocity >= mConfigMinFlingVelocity) { 4796 long delay = (long)(mConfigTickDistance / mFlingVelocity * 1000); 4797 postAtTime(mFlingRunnable, time + delay); 4798 if (LOCAL_DEBUG) { 4799 Log.d(LOCAL_TAG, "Posted fling: velocity=" 4800 + mFlingVelocity + ", delay=" + delay 4801 + ", keyCode=" + mPendingKeyCode); 4802 } 4803 return true; 4804 } 4805 return false; 4806 } 4807 4808 private void cancelFling() { 4809 if (mFlinging) { 4810 removeCallbacks(mFlingRunnable); 4811 mFlinging = false; 4812 } 4813 } 4814 4815 private final Runnable mFlingRunnable = new Runnable() { 4816 @Override 4817 public void run() { 4818 final long time = SystemClock.uptimeMillis(); 4819 sendKeyDownOrRepeat(time, mPendingKeyCode, mPendingKeyMetaState); 4820 mFlingVelocity *= FLING_TICK_DECAY; 4821 if (!postFling(time)) { 4822 mFlinging = false; 4823 finishKeys(time); 4824 } 4825 } 4826 }; 4827 } 4828 4829 final class SyntheticKeyHandler { 4830 4831 public boolean process(KeyEvent event) { 4832 // In some locales (like Japan) controllers use B for confirm and A for back, rather 4833 // than vice versa, so we need to special case this here since the input system itself 4834 // is not locale-aware. 4835 int keyCode; 4836 switch(event.getKeyCode()) { 4837 case KeyEvent.KEYCODE_BUTTON_A: 4838 case KeyEvent.KEYCODE_BUTTON_C: 4839 case KeyEvent.KEYCODE_BUTTON_X: 4840 case KeyEvent.KEYCODE_BUTTON_Z: 4841 keyCode = mFlipControllerFallbackKeys ? 4842 KeyEvent.KEYCODE_BACK : KeyEvent.KEYCODE_DPAD_CENTER; 4843 break; 4844 case KeyEvent.KEYCODE_BUTTON_B: 4845 case KeyEvent.KEYCODE_BUTTON_Y: 4846 keyCode = mFlipControllerFallbackKeys ? 4847 KeyEvent.KEYCODE_DPAD_CENTER : KeyEvent.KEYCODE_BACK; 4848 break; 4849 case KeyEvent.KEYCODE_BUTTON_THUMBL: 4850 case KeyEvent.KEYCODE_BUTTON_THUMBR: 4851 case KeyEvent.KEYCODE_BUTTON_START: 4852 case KeyEvent.KEYCODE_BUTTON_1: 4853 case KeyEvent.KEYCODE_BUTTON_2: 4854 case KeyEvent.KEYCODE_BUTTON_3: 4855 case KeyEvent.KEYCODE_BUTTON_4: 4856 case KeyEvent.KEYCODE_BUTTON_5: 4857 case KeyEvent.KEYCODE_BUTTON_6: 4858 case KeyEvent.KEYCODE_BUTTON_7: 4859 case KeyEvent.KEYCODE_BUTTON_8: 4860 case KeyEvent.KEYCODE_BUTTON_9: 4861 case KeyEvent.KEYCODE_BUTTON_10: 4862 case KeyEvent.KEYCODE_BUTTON_11: 4863 case KeyEvent.KEYCODE_BUTTON_12: 4864 case KeyEvent.KEYCODE_BUTTON_13: 4865 case KeyEvent.KEYCODE_BUTTON_14: 4866 case KeyEvent.KEYCODE_BUTTON_15: 4867 case KeyEvent.KEYCODE_BUTTON_16: 4868 keyCode = KeyEvent.KEYCODE_DPAD_CENTER; 4869 break; 4870 case KeyEvent.KEYCODE_BUTTON_SELECT: 4871 case KeyEvent.KEYCODE_BUTTON_MODE: 4872 keyCode = KeyEvent.KEYCODE_MENU; 4873 default: 4874 return false; 4875 } 4876 4877 enqueueInputEvent(new KeyEvent(event.getDownTime(), event.getEventTime(), 4878 event.getAction(), keyCode, event.getRepeatCount(), event.getMetaState(), 4879 event.getDeviceId(), event.getScanCode(), 4880 event.getFlags() | KeyEvent.FLAG_FALLBACK, event.getSource())); 4881 return true; 4882 } 4883 4884 } 4885 4886 /** 4887 * Returns true if the key is used for keyboard navigation. 4888 * @param keyEvent The key event. 4889 * @return True if the key is used for keyboard navigation. 4890 */ 4891 private static boolean isNavigationKey(KeyEvent keyEvent) { 4892 switch (keyEvent.getKeyCode()) { 4893 case KeyEvent.KEYCODE_DPAD_LEFT: 4894 case KeyEvent.KEYCODE_DPAD_RIGHT: 4895 case KeyEvent.KEYCODE_DPAD_UP: 4896 case KeyEvent.KEYCODE_DPAD_DOWN: 4897 case KeyEvent.KEYCODE_DPAD_CENTER: 4898 case KeyEvent.KEYCODE_PAGE_UP: 4899 case KeyEvent.KEYCODE_PAGE_DOWN: 4900 case KeyEvent.KEYCODE_MOVE_HOME: 4901 case KeyEvent.KEYCODE_MOVE_END: 4902 case KeyEvent.KEYCODE_TAB: 4903 case KeyEvent.KEYCODE_SPACE: 4904 case KeyEvent.KEYCODE_ENTER: 4905 return true; 4906 } 4907 return false; 4908 } 4909 4910 /** 4911 * Returns true if the key is used for typing. 4912 * @param keyEvent The key event. 4913 * @return True if the key is used for typing. 4914 */ 4915 private static boolean isTypingKey(KeyEvent keyEvent) { 4916 return keyEvent.getUnicodeChar() > 0; 4917 } 4918 4919 /** 4920 * See if the key event means we should leave touch mode (and leave touch mode if so). 4921 * @param event The key event. 4922 * @return Whether this key event should be consumed (meaning the act of 4923 * leaving touch mode alone is considered the event). 4924 */ 4925 private boolean checkForLeavingTouchModeAndConsume(KeyEvent event) { 4926 // Only relevant in touch mode. 4927 if (!mAttachInfo.mInTouchMode) { 4928 return false; 4929 } 4930 4931 // Only consider leaving touch mode on DOWN or MULTIPLE actions, never on UP. 4932 final int action = event.getAction(); 4933 if (action != KeyEvent.ACTION_DOWN && action != KeyEvent.ACTION_MULTIPLE) { 4934 return false; 4935 } 4936 4937 // Don't leave touch mode if the IME told us not to. 4938 if ((event.getFlags() & KeyEvent.FLAG_KEEP_TOUCH_MODE) != 0) { 4939 return false; 4940 } 4941 4942 // If the key can be used for keyboard navigation then leave touch mode 4943 // and select a focused view if needed (in ensureTouchMode). 4944 // When a new focused view is selected, we consume the navigation key because 4945 // navigation doesn't make much sense unless a view already has focus so 4946 // the key's purpose is to set focus. 4947 if (isNavigationKey(event)) { 4948 return ensureTouchMode(false); 4949 } 4950 4951 // If the key can be used for typing then leave touch mode 4952 // and select a focused view if needed (in ensureTouchMode). 4953 // Always allow the view to process the typing key. 4954 if (isTypingKey(event)) { 4955 ensureTouchMode(false); 4956 return false; 4957 } 4958 4959 return false; 4960 } 4961 4962 /* drag/drop */ 4963 void setLocalDragState(Object obj) { 4964 mLocalDragState = obj; 4965 } 4966 4967 private void handleDragEvent(DragEvent event) { 4968 // From the root, only drag start/end/location are dispatched. entered/exited 4969 // are determined and dispatched by the viewgroup hierarchy, who then report 4970 // that back here for ultimate reporting back to the framework. 4971 if (mView != null && mAdded) { 4972 final int what = event.mAction; 4973 4974 if (what == DragEvent.ACTION_DRAG_EXITED) { 4975 // A direct EXITED event means that the window manager knows we've just crossed 4976 // a window boundary, so the current drag target within this one must have 4977 // just been exited. Send it the usual notifications and then we're done 4978 // for now. 4979 mView.dispatchDragEvent(event); 4980 } else { 4981 // Cache the drag description when the operation starts, then fill it in 4982 // on subsequent calls as a convenience 4983 if (what == DragEvent.ACTION_DRAG_STARTED) { 4984 mCurrentDragView = null; // Start the current-recipient tracking 4985 mDragDescription = event.mClipDescription; 4986 } else { 4987 event.mClipDescription = mDragDescription; 4988 } 4989 4990 // For events with a [screen] location, translate into window coordinates 4991 if ((what == DragEvent.ACTION_DRAG_LOCATION) || (what == DragEvent.ACTION_DROP)) { 4992 mDragPoint.set(event.mX, event.mY); 4993 if (mTranslator != null) { 4994 mTranslator.translatePointInScreenToAppWindow(mDragPoint); 4995 } 4996 4997 if (mCurScrollY != 0) { 4998 mDragPoint.offset(0, mCurScrollY); 4999 } 5000 5001 event.mX = mDragPoint.x; 5002 event.mY = mDragPoint.y; 5003 } 5004 5005 // Remember who the current drag target is pre-dispatch 5006 final View prevDragView = mCurrentDragView; 5007 5008 // Now dispatch the drag/drop event 5009 boolean result = mView.dispatchDragEvent(event); 5010 5011 // If we changed apparent drag target, tell the OS about it 5012 if (prevDragView != mCurrentDragView) { 5013 try { 5014 if (prevDragView != null) { 5015 mWindowSession.dragRecipientExited(mWindow); 5016 } 5017 if (mCurrentDragView != null) { 5018 mWindowSession.dragRecipientEntered(mWindow); 5019 } 5020 } catch (RemoteException e) { 5021 Slog.e(TAG, "Unable to note drag target change"); 5022 } 5023 } 5024 5025 // Report the drop result when we're done 5026 if (what == DragEvent.ACTION_DROP) { 5027 mDragDescription = null; 5028 try { 5029 Log.i(TAG, "Reporting drop result: " + result); 5030 mWindowSession.reportDropResult(mWindow, result); 5031 } catch (RemoteException e) { 5032 Log.e(TAG, "Unable to report drop result"); 5033 } 5034 } 5035 5036 // When the drag operation ends, release any local state object 5037 // that may have been in use 5038 if (what == DragEvent.ACTION_DRAG_ENDED) { 5039 setLocalDragState(null); 5040 } 5041 } 5042 } 5043 event.recycle(); 5044 } 5045 5046 public void handleDispatchSystemUiVisibilityChanged(SystemUiVisibilityInfo args) { 5047 if (mSeq != args.seq) { 5048 // The sequence has changed, so we need to update our value and make 5049 // sure to do a traversal afterward so the window manager is given our 5050 // most recent data. 5051 mSeq = args.seq; 5052 mAttachInfo.mForceReportNewAttributes = true; 5053 scheduleTraversals(); 5054 } 5055 if (mView == null) return; 5056 if (args.localChanges != 0) { 5057 mView.updateLocalSystemUiVisibility(args.localValue, args.localChanges); 5058 } 5059 if (mAttachInfo != null) { 5060 int visibility = args.globalVisibility&View.SYSTEM_UI_CLEARABLE_FLAGS; 5061 if (visibility != mAttachInfo.mGlobalSystemUiVisibility) { 5062 mAttachInfo.mGlobalSystemUiVisibility = visibility; 5063 mView.dispatchSystemUiVisibilityChanged(visibility); 5064 } 5065 } 5066 } 5067 5068 public void handleDispatchDoneAnimating() { 5069 if (mWindowsAnimating) { 5070 mWindowsAnimating = false; 5071 if (!mDirty.isEmpty() || mIsAnimating || mFullRedrawNeeded) { 5072 scheduleTraversals(); 5073 } 5074 } 5075 } 5076 5077 public void getLastTouchPoint(Point outLocation) { 5078 outLocation.x = (int) mLastTouchPoint.x; 5079 outLocation.y = (int) mLastTouchPoint.y; 5080 } 5081 5082 public void setDragFocus(View newDragTarget) { 5083 if (mCurrentDragView != newDragTarget) { 5084 mCurrentDragView = newDragTarget; 5085 } 5086 } 5087 5088 private AudioManager getAudioManager() { 5089 if (mView == null) { 5090 throw new IllegalStateException("getAudioManager called when there is no mView"); 5091 } 5092 if (mAudioManager == null) { 5093 mAudioManager = (AudioManager) mView.getContext().getSystemService(Context.AUDIO_SERVICE); 5094 } 5095 return mAudioManager; 5096 } 5097 5098 public AccessibilityInteractionController getAccessibilityInteractionController() { 5099 if (mView == null) { 5100 throw new IllegalStateException("getAccessibilityInteractionController" 5101 + " called when there is no mView"); 5102 } 5103 if (mAccessibilityInteractionController == null) { 5104 mAccessibilityInteractionController = new AccessibilityInteractionController(this); 5105 } 5106 return mAccessibilityInteractionController; 5107 } 5108 5109 private int relayoutWindow(WindowManager.LayoutParams params, int viewVisibility, 5110 boolean insetsPending) throws RemoteException { 5111 5112 float appScale = mAttachInfo.mApplicationScale; 5113 boolean restore = false; 5114 if (params != null && mTranslator != null) { 5115 restore = true; 5116 params.backup(); 5117 mTranslator.translateWindowLayout(params); 5118 } 5119 if (params != null) { 5120 if (DBG) Log.d(TAG, "WindowLayout in layoutWindow:" + params); 5121 } 5122 mPendingConfiguration.seq = 0; 5123 //Log.d(TAG, ">>>>>> CALLING relayout"); 5124 if (params != null && mOrigWindowType != params.type) { 5125 // For compatibility with old apps, don't crash here. 5126 if (mTargetSdkVersion < android.os.Build.VERSION_CODES.ICE_CREAM_SANDWICH) { 5127 Slog.w(TAG, "Window type can not be changed after " 5128 + "the window is added; ignoring change of " + mView); 5129 params.type = mOrigWindowType; 5130 } 5131 } 5132 int relayoutResult = mWindowSession.relayout( 5133 mWindow, mSeq, params, 5134 (int) (mView.getMeasuredWidth() * appScale + 0.5f), 5135 (int) (mView.getMeasuredHeight() * appScale + 0.5f), 5136 viewVisibility, insetsPending ? WindowManagerGlobal.RELAYOUT_INSETS_PENDING : 0, 5137 mWinFrame, mPendingOverscanInsets, mPendingContentInsets, mPendingVisibleInsets, 5138 mPendingConfiguration, mSurface); 5139 //Log.d(TAG, "<<<<<< BACK FROM relayout"); 5140 if (restore) { 5141 params.restore(); 5142 } 5143 5144 if (mTranslator != null) { 5145 mTranslator.translateRectInScreenToAppWinFrame(mWinFrame); 5146 mTranslator.translateRectInScreenToAppWindow(mPendingOverscanInsets); 5147 mTranslator.translateRectInScreenToAppWindow(mPendingContentInsets); 5148 mTranslator.translateRectInScreenToAppWindow(mPendingVisibleInsets); 5149 } 5150 return relayoutResult; 5151 } 5152 5153 /** 5154 * {@inheritDoc} 5155 */ 5156 @Override 5157 public void playSoundEffect(int effectId) { 5158 checkThread(); 5159 5160 if (mMediaDisabled) { 5161 return; 5162 } 5163 5164 try { 5165 final AudioManager audioManager = getAudioManager(); 5166 5167 switch (effectId) { 5168 case SoundEffectConstants.CLICK: 5169 audioManager.playSoundEffect(AudioManager.FX_KEY_CLICK); 5170 return; 5171 case SoundEffectConstants.NAVIGATION_DOWN: 5172 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_DOWN); 5173 return; 5174 case SoundEffectConstants.NAVIGATION_LEFT: 5175 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_LEFT); 5176 return; 5177 case SoundEffectConstants.NAVIGATION_RIGHT: 5178 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_RIGHT); 5179 return; 5180 case SoundEffectConstants.NAVIGATION_UP: 5181 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_UP); 5182 return; 5183 default: 5184 throw new IllegalArgumentException("unknown effect id " + effectId + 5185 " not defined in " + SoundEffectConstants.class.getCanonicalName()); 5186 } 5187 } catch (IllegalStateException e) { 5188 // Exception thrown by getAudioManager() when mView is null 5189 Log.e(TAG, "FATAL EXCEPTION when attempting to play sound effect: " + e); 5190 e.printStackTrace(); 5191 } 5192 } 5193 5194 /** 5195 * {@inheritDoc} 5196 */ 5197 @Override 5198 public boolean performHapticFeedback(int effectId, boolean always) { 5199 try { 5200 return mWindowSession.performHapticFeedback(mWindow, effectId, always); 5201 } catch (RemoteException e) { 5202 return false; 5203 } 5204 } 5205 5206 /** 5207 * {@inheritDoc} 5208 */ 5209 @Override 5210 public View focusSearch(View focused, int direction) { 5211 checkThread(); 5212 if (!(mView instanceof ViewGroup)) { 5213 return null; 5214 } 5215 return FocusFinder.getInstance().findNextFocus((ViewGroup) mView, focused, direction); 5216 } 5217 5218 public void debug() { 5219 mView.debug(); 5220 } 5221 5222 public void dump(String prefix, FileDescriptor fd, PrintWriter writer, String[] args) { 5223 String innerPrefix = prefix + " "; 5224 writer.print(prefix); writer.println("ViewRoot:"); 5225 writer.print(innerPrefix); writer.print("mAdded="); writer.print(mAdded); 5226 writer.print(" mRemoved="); writer.println(mRemoved); 5227 writer.print(innerPrefix); writer.print("mConsumeBatchedInputScheduled="); 5228 writer.println(mConsumeBatchedInputScheduled); 5229 writer.print(innerPrefix); writer.print("mPendingInputEventCount="); 5230 writer.println(mPendingInputEventCount); 5231 writer.print(innerPrefix); writer.print("mProcessInputEventsScheduled="); 5232 writer.println(mProcessInputEventsScheduled); 5233 writer.print(innerPrefix); writer.print("mTraversalScheduled="); 5234 writer.print(mTraversalScheduled); 5235 if (mTraversalScheduled) { 5236 writer.print(" (barrier="); writer.print(mTraversalBarrier); writer.println(")"); 5237 } else { 5238 writer.println(); 5239 } 5240 mFirstInputStage.dump(innerPrefix, writer); 5241 5242 mChoreographer.dump(prefix, writer); 5243 5244 writer.print(prefix); writer.println("View Hierarchy:"); 5245 dumpViewHierarchy(innerPrefix, writer, mView); 5246 } 5247 5248 private void dumpViewHierarchy(String prefix, PrintWriter writer, View view) { 5249 writer.print(prefix); 5250 if (view == null) { 5251 writer.println("null"); 5252 return; 5253 } 5254 writer.println(view.toString()); 5255 if (!(view instanceof ViewGroup)) { 5256 return; 5257 } 5258 ViewGroup grp = (ViewGroup)view; 5259 final int N = grp.getChildCount(); 5260 if (N <= 0) { 5261 return; 5262 } 5263 prefix = prefix + " "; 5264 for (int i=0; i<N; i++) { 5265 dumpViewHierarchy(prefix, writer, grp.getChildAt(i)); 5266 } 5267 } 5268 5269 public void dumpGfxInfo(int[] info) { 5270 info[0] = info[1] = 0; 5271 if (mView != null) { 5272 getGfxInfo(mView, info); 5273 } 5274 } 5275 5276 private static void getGfxInfo(View view, int[] info) { 5277 DisplayList displayList = view.mDisplayList; 5278 info[0]++; 5279 if (displayList != null) { 5280 info[1] += displayList.getSize(); 5281 } 5282 5283 if (view instanceof ViewGroup) { 5284 ViewGroup group = (ViewGroup) view; 5285 5286 int count = group.getChildCount(); 5287 for (int i = 0; i < count; i++) { 5288 getGfxInfo(group.getChildAt(i), info); 5289 } 5290 } 5291 } 5292 5293 /** 5294 * @param immediate True, do now if not in traversal. False, put on queue and do later. 5295 * @return True, request has been queued. False, request has been completed. 5296 */ 5297 boolean die(boolean immediate) { 5298 // Make sure we do execute immediately if we are in the middle of a traversal or the damage 5299 // done by dispatchDetachedFromWindow will cause havoc on return. 5300 if (immediate && !mIsInTraversal) { 5301 doDie(); 5302 return false; 5303 } 5304 5305 if (!mIsDrawing) { 5306 destroyHardwareRenderer(); 5307 } else { 5308 Log.e(TAG, "Attempting to destroy the window while drawing!\n" + 5309 " window=" + this + ", title=" + mWindowAttributes.getTitle()); 5310 } 5311 mHandler.sendEmptyMessage(MSG_DIE); 5312 return true; 5313 } 5314 5315 void doDie() { 5316 checkThread(); 5317 if (LOCAL_LOGV) Log.v(TAG, "DIE in " + this + " of " + mSurface); 5318 synchronized (this) { 5319 if (mRemoved) { 5320 return; 5321 } 5322 mRemoved = true; 5323 if (mAdded) { 5324 dispatchDetachedFromWindow(); 5325 } 5326 5327 if (mAdded && !mFirst) { 5328 invalidateDisplayLists(); 5329 destroyHardwareRenderer(); 5330 5331 if (mView != null) { 5332 int viewVisibility = mView.getVisibility(); 5333 boolean viewVisibilityChanged = mViewVisibility != viewVisibility; 5334 if (mWindowAttributesChanged || viewVisibilityChanged) { 5335 // If layout params have been changed, first give them 5336 // to the window manager to make sure it has the correct 5337 // animation info. 5338 try { 5339 if ((relayoutWindow(mWindowAttributes, viewVisibility, false) 5340 & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 5341 mWindowSession.finishDrawing(mWindow); 5342 } 5343 } catch (RemoteException e) { 5344 } 5345 } 5346 5347 mSurface.release(); 5348 } 5349 } 5350 5351 mAdded = false; 5352 } 5353 WindowManagerGlobal.getInstance().doRemoveView(this); 5354 } 5355 5356 public void requestUpdateConfiguration(Configuration config) { 5357 Message msg = mHandler.obtainMessage(MSG_UPDATE_CONFIGURATION, config); 5358 mHandler.sendMessage(msg); 5359 } 5360 5361 public void loadSystemProperties() { 5362 mHandler.post(new Runnable() { 5363 @Override 5364 public void run() { 5365 // Profiling 5366 mProfileRendering = SystemProperties.getBoolean(PROPERTY_PROFILE_RENDERING, false); 5367 profileRendering(mAttachInfo.mHasWindowFocus); 5368 5369 // Media (used by sound effects) 5370 mMediaDisabled = SystemProperties.getBoolean(PROPERTY_MEDIA_DISABLED, false); 5371 5372 // Hardware rendering 5373 if (mAttachInfo.mHardwareRenderer != null) { 5374 if (mAttachInfo.mHardwareRenderer.loadSystemProperties(mHolder.getSurface())) { 5375 invalidate(); 5376 } 5377 } 5378 5379 // Layout debugging 5380 boolean layout = SystemProperties.getBoolean(View.DEBUG_LAYOUT_PROPERTY, false); 5381 if (layout != mAttachInfo.mDebugLayout) { 5382 mAttachInfo.mDebugLayout = layout; 5383 if (!mHandler.hasMessages(MSG_INVALIDATE_WORLD)) { 5384 mHandler.sendEmptyMessageDelayed(MSG_INVALIDATE_WORLD, 200); 5385 } 5386 } 5387 } 5388 }); 5389 } 5390 5391 private void destroyHardwareRenderer() { 5392 AttachInfo attachInfo = mAttachInfo; 5393 HardwareRenderer hardwareRenderer = attachInfo.mHardwareRenderer; 5394 5395 if (hardwareRenderer != null) { 5396 if (mView != null) { 5397 hardwareRenderer.destroyHardwareResources(mView); 5398 } 5399 hardwareRenderer.destroy(true); 5400 hardwareRenderer.setRequested(false); 5401 5402 attachInfo.mHardwareRenderer = null; 5403 attachInfo.mHardwareAccelerated = false; 5404 } 5405 } 5406 5407 public void dispatchFinishInputConnection(InputConnection connection) { 5408 Message msg = mHandler.obtainMessage(MSG_FINISH_INPUT_CONNECTION, connection); 5409 mHandler.sendMessage(msg); 5410 } 5411 5412 public void dispatchResized(Rect frame, Rect overscanInsets, Rect contentInsets, 5413 Rect visibleInsets, boolean reportDraw, Configuration newConfig) { 5414 if (DEBUG_LAYOUT) Log.v(TAG, "Resizing " + this + ": frame=" + frame.toShortString() 5415 + " contentInsets=" + contentInsets.toShortString() 5416 + " visibleInsets=" + visibleInsets.toShortString() 5417 + " reportDraw=" + reportDraw); 5418 Message msg = mHandler.obtainMessage(reportDraw ? MSG_RESIZED_REPORT : MSG_RESIZED); 5419 if (mTranslator != null) { 5420 mTranslator.translateRectInScreenToAppWindow(frame); 5421 mTranslator.translateRectInScreenToAppWindow(overscanInsets); 5422 mTranslator.translateRectInScreenToAppWindow(contentInsets); 5423 mTranslator.translateRectInScreenToAppWindow(visibleInsets); 5424 } 5425 SomeArgs args = SomeArgs.obtain(); 5426 final boolean sameProcessCall = (Binder.getCallingPid() == android.os.Process.myPid()); 5427 args.arg1 = sameProcessCall ? new Rect(frame) : frame; 5428 args.arg2 = sameProcessCall ? new Rect(contentInsets) : contentInsets; 5429 args.arg3 = sameProcessCall ? new Rect(visibleInsets) : visibleInsets; 5430 args.arg4 = sameProcessCall && newConfig != null ? new Configuration(newConfig) : newConfig; 5431 args.arg5 = sameProcessCall ? new Rect(overscanInsets) : overscanInsets; 5432 msg.obj = args; 5433 mHandler.sendMessage(msg); 5434 } 5435 5436 public void dispatchMoved(int newX, int newY) { 5437 if (DEBUG_LAYOUT) Log.v(TAG, "Window moved " + this + ": newX=" + newX + " newY=" + newY); 5438 if (mTranslator != null) { 5439 PointF point = new PointF(newX, newY); 5440 mTranslator.translatePointInScreenToAppWindow(point); 5441 newX = (int) (point.x + 0.5); 5442 newY = (int) (point.y + 0.5); 5443 } 5444 Message msg = mHandler.obtainMessage(MSG_WINDOW_MOVED, newX, newY); 5445 mHandler.sendMessage(msg); 5446 } 5447 5448 /** 5449 * Represents a pending input event that is waiting in a queue. 5450 * 5451 * Input events are processed in serial order by the timestamp specified by 5452 * {@link InputEvent#getEventTimeNano()}. In general, the input dispatcher delivers 5453 * one input event to the application at a time and waits for the application 5454 * to finish handling it before delivering the next one. 5455 * 5456 * However, because the application or IME can synthesize and inject multiple 5457 * key events at a time without going through the input dispatcher, we end up 5458 * needing a queue on the application's side. 5459 */ 5460 private static final class QueuedInputEvent { 5461 public static final int FLAG_DELIVER_POST_IME = 1 << 0; 5462 public static final int FLAG_DEFERRED = 1 << 1; 5463 public static final int FLAG_FINISHED = 1 << 2; 5464 public static final int FLAG_FINISHED_HANDLED = 1 << 3; 5465 public static final int FLAG_RESYNTHESIZED = 1 << 4; 5466 5467 public QueuedInputEvent mNext; 5468 5469 public InputEvent mEvent; 5470 public InputEventReceiver mReceiver; 5471 public int mFlags; 5472 5473 public boolean shouldSkipIme() { 5474 if ((mFlags & FLAG_DELIVER_POST_IME) != 0) { 5475 return true; 5476 } 5477 return mEvent instanceof MotionEvent 5478 && mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER); 5479 } 5480 } 5481 5482 private QueuedInputEvent obtainQueuedInputEvent(InputEvent event, 5483 InputEventReceiver receiver, int flags) { 5484 QueuedInputEvent q = mQueuedInputEventPool; 5485 if (q != null) { 5486 mQueuedInputEventPoolSize -= 1; 5487 mQueuedInputEventPool = q.mNext; 5488 q.mNext = null; 5489 } else { 5490 q = new QueuedInputEvent(); 5491 } 5492 5493 q.mEvent = event; 5494 q.mReceiver = receiver; 5495 q.mFlags = flags; 5496 return q; 5497 } 5498 5499 private void recycleQueuedInputEvent(QueuedInputEvent q) { 5500 q.mEvent = null; 5501 q.mReceiver = null; 5502 5503 if (mQueuedInputEventPoolSize < MAX_QUEUED_INPUT_EVENT_POOL_SIZE) { 5504 mQueuedInputEventPoolSize += 1; 5505 q.mNext = mQueuedInputEventPool; 5506 mQueuedInputEventPool = q; 5507 } 5508 } 5509 5510 void enqueueInputEvent(InputEvent event) { 5511 enqueueInputEvent(event, null, 0, false); 5512 } 5513 5514 void enqueueInputEvent(InputEvent event, 5515 InputEventReceiver receiver, int flags, boolean processImmediately) { 5516 QueuedInputEvent q = obtainQueuedInputEvent(event, receiver, flags); 5517 5518 // Always enqueue the input event in order, regardless of its time stamp. 5519 // We do this because the application or the IME may inject key events 5520 // in response to touch events and we want to ensure that the injected keys 5521 // are processed in the order they were received and we cannot trust that 5522 // the time stamp of injected events are monotonic. 5523 QueuedInputEvent last = mPendingInputEventTail; 5524 if (last == null) { 5525 mPendingInputEventHead = q; 5526 mPendingInputEventTail = q; 5527 } else { 5528 last.mNext = q; 5529 mPendingInputEventTail = q; 5530 } 5531 mPendingInputEventCount += 1; 5532 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 5533 mPendingInputEventCount); 5534 5535 if (processImmediately) { 5536 doProcessInputEvents(); 5537 } else { 5538 scheduleProcessInputEvents(); 5539 } 5540 } 5541 5542 private void scheduleProcessInputEvents() { 5543 if (!mProcessInputEventsScheduled) { 5544 mProcessInputEventsScheduled = true; 5545 Message msg = mHandler.obtainMessage(MSG_PROCESS_INPUT_EVENTS); 5546 msg.setAsynchronous(true); 5547 mHandler.sendMessage(msg); 5548 } 5549 } 5550 5551 void doProcessInputEvents() { 5552 // Deliver all pending input events in the queue. 5553 while (mPendingInputEventHead != null) { 5554 QueuedInputEvent q = mPendingInputEventHead; 5555 mPendingInputEventHead = q.mNext; 5556 if (mPendingInputEventHead == null) { 5557 mPendingInputEventTail = null; 5558 } 5559 q.mNext = null; 5560 5561 mPendingInputEventCount -= 1; 5562 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 5563 mPendingInputEventCount); 5564 5565 deliverInputEvent(q); 5566 } 5567 5568 // We are done processing all input events that we can process right now 5569 // so we can clear the pending flag immediately. 5570 if (mProcessInputEventsScheduled) { 5571 mProcessInputEventsScheduled = false; 5572 mHandler.removeMessages(MSG_PROCESS_INPUT_EVENTS); 5573 } 5574 } 5575 5576 private void deliverInputEvent(QueuedInputEvent q) { 5577 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "deliverInputEvent"); 5578 try { 5579 if (mInputEventConsistencyVerifier != null) { 5580 mInputEventConsistencyVerifier.onInputEvent(q.mEvent, 0); 5581 } 5582 5583 InputStage stage = q.shouldSkipIme() ? mFirstPostImeInputStage : mFirstInputStage; 5584 if (stage != null) { 5585 stage.deliver(q); 5586 } else { 5587 finishInputEvent(q); 5588 } 5589 } finally { 5590 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 5591 } 5592 } 5593 5594 private void finishInputEvent(QueuedInputEvent q) { 5595 if (q.mReceiver != null) { 5596 boolean handled = (q.mFlags & QueuedInputEvent.FLAG_FINISHED_HANDLED) != 0; 5597 q.mReceiver.finishInputEvent(q.mEvent, handled); 5598 } else { 5599 q.mEvent.recycleIfNeededAfterDispatch(); 5600 } 5601 5602 recycleQueuedInputEvent(q); 5603 } 5604 5605 static boolean isTerminalInputEvent(InputEvent event) { 5606 if (event instanceof KeyEvent) { 5607 final KeyEvent keyEvent = (KeyEvent)event; 5608 return keyEvent.getAction() == KeyEvent.ACTION_UP; 5609 } else { 5610 final MotionEvent motionEvent = (MotionEvent)event; 5611 final int action = motionEvent.getAction(); 5612 return action == MotionEvent.ACTION_UP 5613 || action == MotionEvent.ACTION_CANCEL 5614 || action == MotionEvent.ACTION_HOVER_EXIT; 5615 } 5616 } 5617 5618 void scheduleConsumeBatchedInput() { 5619 if (!mConsumeBatchedInputScheduled) { 5620 mConsumeBatchedInputScheduled = true; 5621 mChoreographer.postCallback(Choreographer.CALLBACK_INPUT, 5622 mConsumedBatchedInputRunnable, null); 5623 } 5624 } 5625 5626 void unscheduleConsumeBatchedInput() { 5627 if (mConsumeBatchedInputScheduled) { 5628 mConsumeBatchedInputScheduled = false; 5629 mChoreographer.removeCallbacks(Choreographer.CALLBACK_INPUT, 5630 mConsumedBatchedInputRunnable, null); 5631 } 5632 } 5633 5634 void doConsumeBatchedInput(long frameTimeNanos) { 5635 if (mConsumeBatchedInputScheduled) { 5636 mConsumeBatchedInputScheduled = false; 5637 if (mInputEventReceiver != null) { 5638 mInputEventReceiver.consumeBatchedInputEvents(frameTimeNanos); 5639 } 5640 doProcessInputEvents(); 5641 } 5642 } 5643 5644 final class TraversalRunnable implements Runnable { 5645 @Override 5646 public void run() { 5647 doTraversal(); 5648 } 5649 } 5650 final TraversalRunnable mTraversalRunnable = new TraversalRunnable(); 5651 5652 final class WindowInputEventReceiver extends InputEventReceiver { 5653 public WindowInputEventReceiver(InputChannel inputChannel, Looper looper) { 5654 super(inputChannel, looper); 5655 } 5656 5657 @Override 5658 public void onInputEvent(InputEvent event) { 5659 enqueueInputEvent(event, this, 0, true); 5660 } 5661 5662 @Override 5663 public void onBatchedInputEventPending() { 5664 scheduleConsumeBatchedInput(); 5665 } 5666 5667 @Override 5668 public void dispose() { 5669 unscheduleConsumeBatchedInput(); 5670 super.dispose(); 5671 } 5672 } 5673 WindowInputEventReceiver mInputEventReceiver; 5674 5675 final class ConsumeBatchedInputRunnable implements Runnable { 5676 @Override 5677 public void run() { 5678 doConsumeBatchedInput(mChoreographer.getFrameTimeNanos()); 5679 } 5680 } 5681 final ConsumeBatchedInputRunnable mConsumedBatchedInputRunnable = 5682 new ConsumeBatchedInputRunnable(); 5683 boolean mConsumeBatchedInputScheduled; 5684 5685 final class InvalidateOnAnimationRunnable implements Runnable { 5686 private boolean mPosted; 5687 private final ArrayList<View> mViews = new ArrayList<View>(); 5688 private final ArrayList<AttachInfo.InvalidateInfo> mViewRects = 5689 new ArrayList<AttachInfo.InvalidateInfo>(); 5690 private View[] mTempViews; 5691 private AttachInfo.InvalidateInfo[] mTempViewRects; 5692 5693 public void addView(View view) { 5694 synchronized (this) { 5695 mViews.add(view); 5696 postIfNeededLocked(); 5697 } 5698 } 5699 5700 public void addViewRect(AttachInfo.InvalidateInfo info) { 5701 synchronized (this) { 5702 mViewRects.add(info); 5703 postIfNeededLocked(); 5704 } 5705 } 5706 5707 public void removeView(View view) { 5708 synchronized (this) { 5709 mViews.remove(view); 5710 5711 for (int i = mViewRects.size(); i-- > 0; ) { 5712 AttachInfo.InvalidateInfo info = mViewRects.get(i); 5713 if (info.target == view) { 5714 mViewRects.remove(i); 5715 info.recycle(); 5716 } 5717 } 5718 5719 if (mPosted && mViews.isEmpty() && mViewRects.isEmpty()) { 5720 mChoreographer.removeCallbacks(Choreographer.CALLBACK_ANIMATION, this, null); 5721 mPosted = false; 5722 } 5723 } 5724 } 5725 5726 @Override 5727 public void run() { 5728 final int viewCount; 5729 final int viewRectCount; 5730 synchronized (this) { 5731 mPosted = false; 5732 5733 viewCount = mViews.size(); 5734 if (viewCount != 0) { 5735 mTempViews = mViews.toArray(mTempViews != null 5736 ? mTempViews : new View[viewCount]); 5737 mViews.clear(); 5738 } 5739 5740 viewRectCount = mViewRects.size(); 5741 if (viewRectCount != 0) { 5742 mTempViewRects = mViewRects.toArray(mTempViewRects != null 5743 ? mTempViewRects : new AttachInfo.InvalidateInfo[viewRectCount]); 5744 mViewRects.clear(); 5745 } 5746 } 5747 5748 for (int i = 0; i < viewCount; i++) { 5749 mTempViews[i].invalidate(); 5750 mTempViews[i] = null; 5751 } 5752 5753 for (int i = 0; i < viewRectCount; i++) { 5754 final View.AttachInfo.InvalidateInfo info = mTempViewRects[i]; 5755 info.target.invalidate(info.left, info.top, info.right, info.bottom); 5756 info.recycle(); 5757 } 5758 } 5759 5760 private void postIfNeededLocked() { 5761 if (!mPosted) { 5762 mChoreographer.postCallback(Choreographer.CALLBACK_ANIMATION, this, null); 5763 mPosted = true; 5764 } 5765 } 5766 } 5767 final InvalidateOnAnimationRunnable mInvalidateOnAnimationRunnable = 5768 new InvalidateOnAnimationRunnable(); 5769 5770 public void dispatchInvalidateDelayed(View view, long delayMilliseconds) { 5771 Message msg = mHandler.obtainMessage(MSG_INVALIDATE, view); 5772 mHandler.sendMessageDelayed(msg, delayMilliseconds); 5773 } 5774 5775 public void dispatchInvalidateRectDelayed(AttachInfo.InvalidateInfo info, 5776 long delayMilliseconds) { 5777 final Message msg = mHandler.obtainMessage(MSG_INVALIDATE_RECT, info); 5778 mHandler.sendMessageDelayed(msg, delayMilliseconds); 5779 } 5780 5781 public void dispatchInvalidateOnAnimation(View view) { 5782 mInvalidateOnAnimationRunnable.addView(view); 5783 } 5784 5785 public void dispatchInvalidateRectOnAnimation(AttachInfo.InvalidateInfo info) { 5786 mInvalidateOnAnimationRunnable.addViewRect(info); 5787 } 5788 5789 public void enqueueDisplayList(DisplayList displayList) { 5790 mDisplayLists.add(displayList); 5791 } 5792 5793 public void cancelInvalidate(View view) { 5794 mHandler.removeMessages(MSG_INVALIDATE, view); 5795 // fixme: might leak the AttachInfo.InvalidateInfo objects instead of returning 5796 // them to the pool 5797 mHandler.removeMessages(MSG_INVALIDATE_RECT, view); 5798 mInvalidateOnAnimationRunnable.removeView(view); 5799 } 5800 5801 public void dispatchInputEvent(InputEvent event) { 5802 Message msg = mHandler.obtainMessage(MSG_DISPATCH_INPUT_EVENT, event); 5803 msg.setAsynchronous(true); 5804 mHandler.sendMessage(msg); 5805 } 5806 5807 public void dispatchKeyFromIme(KeyEvent event) { 5808 Message msg = mHandler.obtainMessage(MSG_DISPATCH_KEY_FROM_IME, event); 5809 msg.setAsynchronous(true); 5810 mHandler.sendMessage(msg); 5811 } 5812 5813 public void dispatchUnhandledKey(KeyEvent event) { 5814 if ((event.getFlags() & KeyEvent.FLAG_FALLBACK) == 0) { 5815 final KeyCharacterMap kcm = event.getKeyCharacterMap(); 5816 final int keyCode = event.getKeyCode(); 5817 final int metaState = event.getMetaState(); 5818 5819 // Check for fallback actions specified by the key character map. 5820 KeyCharacterMap.FallbackAction fallbackAction = 5821 kcm.getFallbackAction(keyCode, metaState); 5822 if (fallbackAction != null) { 5823 final int flags = event.getFlags() | KeyEvent.FLAG_FALLBACK; 5824 KeyEvent fallbackEvent = KeyEvent.obtain( 5825 event.getDownTime(), event.getEventTime(), 5826 event.getAction(), fallbackAction.keyCode, 5827 event.getRepeatCount(), fallbackAction.metaState, 5828 event.getDeviceId(), event.getScanCode(), 5829 flags, event.getSource(), null); 5830 fallbackAction.recycle(); 5831 5832 dispatchInputEvent(fallbackEvent); 5833 } 5834 } 5835 } 5836 5837 public void dispatchAppVisibility(boolean visible) { 5838 Message msg = mHandler.obtainMessage(MSG_DISPATCH_APP_VISIBILITY); 5839 msg.arg1 = visible ? 1 : 0; 5840 mHandler.sendMessage(msg); 5841 } 5842 5843 public void dispatchScreenStateChange(boolean on) { 5844 Message msg = mHandler.obtainMessage(MSG_DISPATCH_SCREEN_STATE); 5845 msg.arg1 = on ? 1 : 0; 5846 mHandler.sendMessage(msg); 5847 } 5848 5849 public void dispatchGetNewSurface() { 5850 Message msg = mHandler.obtainMessage(MSG_DISPATCH_GET_NEW_SURFACE); 5851 mHandler.sendMessage(msg); 5852 } 5853 5854 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 5855 Message msg = Message.obtain(); 5856 msg.what = MSG_WINDOW_FOCUS_CHANGED; 5857 msg.arg1 = hasFocus ? 1 : 0; 5858 msg.arg2 = inTouchMode ? 1 : 0; 5859 mHandler.sendMessage(msg); 5860 } 5861 5862 public void dispatchCloseSystemDialogs(String reason) { 5863 Message msg = Message.obtain(); 5864 msg.what = MSG_CLOSE_SYSTEM_DIALOGS; 5865 msg.obj = reason; 5866 mHandler.sendMessage(msg); 5867 } 5868 5869 public void dispatchDragEvent(DragEvent event) { 5870 final int what; 5871 if (event.getAction() == DragEvent.ACTION_DRAG_LOCATION) { 5872 what = MSG_DISPATCH_DRAG_LOCATION_EVENT; 5873 mHandler.removeMessages(what); 5874 } else { 5875 what = MSG_DISPATCH_DRAG_EVENT; 5876 } 5877 Message msg = mHandler.obtainMessage(what, event); 5878 mHandler.sendMessage(msg); 5879 } 5880 5881 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 5882 int localValue, int localChanges) { 5883 SystemUiVisibilityInfo args = new SystemUiVisibilityInfo(); 5884 args.seq = seq; 5885 args.globalVisibility = globalVisibility; 5886 args.localValue = localValue; 5887 args.localChanges = localChanges; 5888 mHandler.sendMessage(mHandler.obtainMessage(MSG_DISPATCH_SYSTEM_UI_VISIBILITY, args)); 5889 } 5890 5891 public void dispatchDoneAnimating() { 5892 mHandler.sendEmptyMessage(MSG_DISPATCH_DONE_ANIMATING); 5893 } 5894 5895 public void dispatchCheckFocus() { 5896 if (!mHandler.hasMessages(MSG_CHECK_FOCUS)) { 5897 // This will result in a call to checkFocus() below. 5898 mHandler.sendEmptyMessage(MSG_CHECK_FOCUS); 5899 } 5900 } 5901 5902 /** 5903 * Post a callback to send a 5904 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 5905 * This event is send at most once every 5906 * {@link ViewConfiguration#getSendRecurringAccessibilityEventsInterval()}. 5907 */ 5908 private void postSendWindowContentChangedCallback(View source, int changeType) { 5909 if (mSendWindowContentChangedAccessibilityEvent == null) { 5910 mSendWindowContentChangedAccessibilityEvent = 5911 new SendWindowContentChangedAccessibilityEvent(); 5912 } 5913 mSendWindowContentChangedAccessibilityEvent.runOrPost(source, changeType); 5914 } 5915 5916 /** 5917 * Remove a posted callback to send a 5918 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 5919 */ 5920 private void removeSendWindowContentChangedCallback() { 5921 if (mSendWindowContentChangedAccessibilityEvent != null) { 5922 mHandler.removeCallbacks(mSendWindowContentChangedAccessibilityEvent); 5923 } 5924 } 5925 5926 @Override 5927 public boolean showContextMenuForChild(View originalView) { 5928 return false; 5929 } 5930 5931 @Override 5932 public ActionMode startActionModeForChild(View originalView, ActionMode.Callback callback) { 5933 return null; 5934 } 5935 5936 @Override 5937 public void createContextMenu(ContextMenu menu) { 5938 } 5939 5940 @Override 5941 public void childDrawableStateChanged(View child) { 5942 } 5943 5944 @Override 5945 public boolean requestSendAccessibilityEvent(View child, AccessibilityEvent event) { 5946 if (mView == null) { 5947 return false; 5948 } 5949 // Intercept accessibility focus events fired by virtual nodes to keep 5950 // track of accessibility focus position in such nodes. 5951 final int eventType = event.getEventType(); 5952 switch (eventType) { 5953 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUSED: { 5954 final long sourceNodeId = event.getSourceNodeId(); 5955 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 5956 sourceNodeId); 5957 View source = mView.findViewByAccessibilityId(accessibilityViewId); 5958 if (source != null) { 5959 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 5960 if (provider != null) { 5961 AccessibilityNodeInfo node = provider.createAccessibilityNodeInfo( 5962 AccessibilityNodeInfo.getVirtualDescendantId(sourceNodeId)); 5963 setAccessibilityFocus(source, node); 5964 } 5965 } 5966 } break; 5967 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUS_CLEARED: { 5968 final long sourceNodeId = event.getSourceNodeId(); 5969 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 5970 sourceNodeId); 5971 View source = mView.findViewByAccessibilityId(accessibilityViewId); 5972 if (source != null) { 5973 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 5974 if (provider != null) { 5975 setAccessibilityFocus(null, null); 5976 } 5977 } 5978 } break; 5979 } 5980 mAccessibilityManager.sendAccessibilityEvent(event); 5981 return true; 5982 } 5983 5984 @Override 5985 public void notifySubtreeAccessibilityStateChanged(View child, View source, int changeType) { 5986 postSendWindowContentChangedCallback(source, changeType); 5987 } 5988 5989 @Override 5990 public boolean canResolveLayoutDirection() { 5991 return true; 5992 } 5993 5994 @Override 5995 public boolean isLayoutDirectionResolved() { 5996 return true; 5997 } 5998 5999 @Override 6000 public int getLayoutDirection() { 6001 return View.LAYOUT_DIRECTION_RESOLVED_DEFAULT; 6002 } 6003 6004 @Override 6005 public boolean canResolveTextDirection() { 6006 return true; 6007 } 6008 6009 @Override 6010 public boolean isTextDirectionResolved() { 6011 return true; 6012 } 6013 6014 @Override 6015 public int getTextDirection() { 6016 return View.TEXT_DIRECTION_RESOLVED_DEFAULT; 6017 } 6018 6019 @Override 6020 public boolean canResolveTextAlignment() { 6021 return true; 6022 } 6023 6024 @Override 6025 public boolean isTextAlignmentResolved() { 6026 return true; 6027 } 6028 6029 @Override 6030 public int getTextAlignment() { 6031 return View.TEXT_ALIGNMENT_RESOLVED_DEFAULT; 6032 } 6033 6034 private View getCommonPredecessor(View first, View second) { 6035 if (mAttachInfo != null) { 6036 if (mTempHashSet == null) { 6037 mTempHashSet = new HashSet<View>(); 6038 } 6039 HashSet<View> seen = mTempHashSet; 6040 seen.clear(); 6041 View firstCurrent = first; 6042 while (firstCurrent != null) { 6043 seen.add(firstCurrent); 6044 ViewParent firstCurrentParent = firstCurrent.mParent; 6045 if (firstCurrentParent instanceof View) { 6046 firstCurrent = (View) firstCurrentParent; 6047 } else { 6048 firstCurrent = null; 6049 } 6050 } 6051 View secondCurrent = second; 6052 while (secondCurrent != null) { 6053 if (seen.contains(secondCurrent)) { 6054 seen.clear(); 6055 return secondCurrent; 6056 } 6057 ViewParent secondCurrentParent = secondCurrent.mParent; 6058 if (secondCurrentParent instanceof View) { 6059 secondCurrent = (View) secondCurrentParent; 6060 } else { 6061 secondCurrent = null; 6062 } 6063 } 6064 seen.clear(); 6065 } 6066 return null; 6067 } 6068 6069 void checkThread() { 6070 if (mThread != Thread.currentThread()) { 6071 throw new CalledFromWrongThreadException( 6072 "Only the original thread that created a view hierarchy can touch its views."); 6073 } 6074 } 6075 6076 @Override 6077 public void requestDisallowInterceptTouchEvent(boolean disallowIntercept) { 6078 // ViewAncestor never intercepts touch event, so this can be a no-op 6079 } 6080 6081 @Override 6082 public boolean requestChildRectangleOnScreen(View child, Rect rectangle, boolean immediate) { 6083 final boolean scrolled = scrollToRectOrFocus(rectangle, immediate); 6084 if (rectangle != null) { 6085 mTempRect.set(rectangle); 6086 mTempRect.offset(0, -mCurScrollY); 6087 mTempRect.offset(mAttachInfo.mWindowLeft, mAttachInfo.mWindowTop); 6088 try { 6089 mWindowSession.onRectangleOnScreenRequested(mWindow, mTempRect, immediate); 6090 } catch (RemoteException re) { 6091 /* ignore */ 6092 } 6093 } 6094 return scrolled; 6095 } 6096 6097 @Override 6098 public void childHasTransientStateChanged(View child, boolean hasTransientState) { 6099 // Do nothing. 6100 } 6101 6102 void changeCanvasOpacity(boolean opaque) { 6103 // TODO(romainguy): recreate Canvas (software or hardware) to reflect the opacity change. 6104 Log.d(TAG, "changeCanvasOpacity: opaque=" + opaque); 6105 } 6106 6107 class TakenSurfaceHolder extends BaseSurfaceHolder { 6108 @Override 6109 public boolean onAllowLockCanvas() { 6110 return mDrawingAllowed; 6111 } 6112 6113 @Override 6114 public void onRelayoutContainer() { 6115 // Not currently interesting -- from changing between fixed and layout size. 6116 } 6117 6118 @Override 6119 public void setFormat(int format) { 6120 ((RootViewSurfaceTaker)mView).setSurfaceFormat(format); 6121 } 6122 6123 @Override 6124 public void setType(int type) { 6125 ((RootViewSurfaceTaker)mView).setSurfaceType(type); 6126 } 6127 6128 @Override 6129 public void onUpdateSurface() { 6130 // We take care of format and type changes on our own. 6131 throw new IllegalStateException("Shouldn't be here"); 6132 } 6133 6134 @Override 6135 public boolean isCreating() { 6136 return mIsCreating; 6137 } 6138 6139 @Override 6140 public void setFixedSize(int width, int height) { 6141 throw new UnsupportedOperationException( 6142 "Currently only support sizing from layout"); 6143 } 6144 6145 @Override 6146 public void setKeepScreenOn(boolean screenOn) { 6147 ((RootViewSurfaceTaker)mView).setSurfaceKeepScreenOn(screenOn); 6148 } 6149 } 6150 6151 static class W extends IWindow.Stub { 6152 private final WeakReference<ViewRootImpl> mViewAncestor; 6153 private final IWindowSession mWindowSession; 6154 6155 W(ViewRootImpl viewAncestor) { 6156 mViewAncestor = new WeakReference<ViewRootImpl>(viewAncestor); 6157 mWindowSession = viewAncestor.mWindowSession; 6158 } 6159 6160 @Override 6161 public void resized(Rect frame, Rect overscanInsets, Rect contentInsets, 6162 Rect visibleInsets, boolean reportDraw, Configuration newConfig) { 6163 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6164 if (viewAncestor != null) { 6165 viewAncestor.dispatchResized(frame, overscanInsets, contentInsets, 6166 visibleInsets, reportDraw, newConfig); 6167 } 6168 } 6169 6170 @Override 6171 public void moved(int newX, int newY) { 6172 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6173 if (viewAncestor != null) { 6174 viewAncestor.dispatchMoved(newX, newY); 6175 } 6176 } 6177 6178 @Override 6179 public void dispatchAppVisibility(boolean visible) { 6180 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6181 if (viewAncestor != null) { 6182 viewAncestor.dispatchAppVisibility(visible); 6183 } 6184 } 6185 6186 @Override 6187 public void dispatchScreenState(boolean on) { 6188 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6189 if (viewAncestor != null) { 6190 viewAncestor.dispatchScreenStateChange(on); 6191 } 6192 } 6193 6194 @Override 6195 public void dispatchGetNewSurface() { 6196 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6197 if (viewAncestor != null) { 6198 viewAncestor.dispatchGetNewSurface(); 6199 } 6200 } 6201 6202 @Override 6203 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 6204 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6205 if (viewAncestor != null) { 6206 viewAncestor.windowFocusChanged(hasFocus, inTouchMode); 6207 } 6208 } 6209 6210 private static int checkCallingPermission(String permission) { 6211 try { 6212 return ActivityManagerNative.getDefault().checkPermission( 6213 permission, Binder.getCallingPid(), Binder.getCallingUid()); 6214 } catch (RemoteException e) { 6215 return PackageManager.PERMISSION_DENIED; 6216 } 6217 } 6218 6219 @Override 6220 public void executeCommand(String command, String parameters, ParcelFileDescriptor out) { 6221 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6222 if (viewAncestor != null) { 6223 final View view = viewAncestor.mView; 6224 if (view != null) { 6225 if (checkCallingPermission(Manifest.permission.DUMP) != 6226 PackageManager.PERMISSION_GRANTED) { 6227 throw new SecurityException("Insufficient permissions to invoke" 6228 + " executeCommand() from pid=" + Binder.getCallingPid() 6229 + ", uid=" + Binder.getCallingUid()); 6230 } 6231 6232 OutputStream clientStream = null; 6233 try { 6234 clientStream = new ParcelFileDescriptor.AutoCloseOutputStream(out); 6235 ViewDebug.dispatchCommand(view, command, parameters, clientStream); 6236 } catch (IOException e) { 6237 e.printStackTrace(); 6238 } finally { 6239 if (clientStream != null) { 6240 try { 6241 clientStream.close(); 6242 } catch (IOException e) { 6243 e.printStackTrace(); 6244 } 6245 } 6246 } 6247 } 6248 } 6249 } 6250 6251 @Override 6252 public void closeSystemDialogs(String reason) { 6253 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6254 if (viewAncestor != null) { 6255 viewAncestor.dispatchCloseSystemDialogs(reason); 6256 } 6257 } 6258 6259 @Override 6260 public void dispatchWallpaperOffsets(float x, float y, float xStep, float yStep, 6261 boolean sync) { 6262 if (sync) { 6263 try { 6264 mWindowSession.wallpaperOffsetsComplete(asBinder()); 6265 } catch (RemoteException e) { 6266 } 6267 } 6268 } 6269 6270 @Override 6271 public void dispatchWallpaperCommand(String action, int x, int y, 6272 int z, Bundle extras, boolean sync) { 6273 if (sync) { 6274 try { 6275 mWindowSession.wallpaperCommandComplete(asBinder(), null); 6276 } catch (RemoteException e) { 6277 } 6278 } 6279 } 6280 6281 /* Drag/drop */ 6282 @Override 6283 public void dispatchDragEvent(DragEvent event) { 6284 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6285 if (viewAncestor != null) { 6286 viewAncestor.dispatchDragEvent(event); 6287 } 6288 } 6289 6290 @Override 6291 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 6292 int localValue, int localChanges) { 6293 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6294 if (viewAncestor != null) { 6295 viewAncestor.dispatchSystemUiVisibilityChanged(seq, globalVisibility, 6296 localValue, localChanges); 6297 } 6298 } 6299 6300 @Override 6301 public void doneAnimating() { 6302 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6303 if (viewAncestor != null) { 6304 viewAncestor.dispatchDoneAnimating(); 6305 } 6306 } 6307 } 6308 6309 public static final class CalledFromWrongThreadException extends AndroidRuntimeException { 6310 public CalledFromWrongThreadException(String msg) { 6311 super(msg); 6312 } 6313 } 6314 6315 private final SurfaceHolder mHolder = new SurfaceHolder() { 6316 // we only need a SurfaceHolder for opengl. it would be nice 6317 // to implement everything else though, especially the callback 6318 // support (opengl doesn't make use of it right now, but eventually 6319 // will). 6320 @Override 6321 public Surface getSurface() { 6322 return mSurface; 6323 } 6324 6325 @Override 6326 public boolean isCreating() { 6327 return false; 6328 } 6329 6330 @Override 6331 public void addCallback(Callback callback) { 6332 } 6333 6334 @Override 6335 public void removeCallback(Callback callback) { 6336 } 6337 6338 @Override 6339 public void setFixedSize(int width, int height) { 6340 } 6341 6342 @Override 6343 public void setSizeFromLayout() { 6344 } 6345 6346 @Override 6347 public void setFormat(int format) { 6348 } 6349 6350 @Override 6351 public void setType(int type) { 6352 } 6353 6354 @Override 6355 public void setKeepScreenOn(boolean screenOn) { 6356 } 6357 6358 @Override 6359 public Canvas lockCanvas() { 6360 return null; 6361 } 6362 6363 @Override 6364 public Canvas lockCanvas(Rect dirty) { 6365 return null; 6366 } 6367 6368 @Override 6369 public void unlockCanvasAndPost(Canvas canvas) { 6370 } 6371 @Override 6372 public Rect getSurfaceFrame() { 6373 return null; 6374 } 6375 }; 6376 6377 static RunQueue getRunQueue() { 6378 RunQueue rq = sRunQueues.get(); 6379 if (rq != null) { 6380 return rq; 6381 } 6382 rq = new RunQueue(); 6383 sRunQueues.set(rq); 6384 return rq; 6385 } 6386 6387 /** 6388 * The run queue is used to enqueue pending work from Views when no Handler is 6389 * attached. The work is executed during the next call to performTraversals on 6390 * the thread. 6391 * @hide 6392 */ 6393 static final class RunQueue { 6394 private final ArrayList<HandlerAction> mActions = new ArrayList<HandlerAction>(); 6395 6396 void post(Runnable action) { 6397 postDelayed(action, 0); 6398 } 6399 6400 void postDelayed(Runnable action, long delayMillis) { 6401 HandlerAction handlerAction = new HandlerAction(); 6402 handlerAction.action = action; 6403 handlerAction.delay = delayMillis; 6404 6405 synchronized (mActions) { 6406 mActions.add(handlerAction); 6407 } 6408 } 6409 6410 void removeCallbacks(Runnable action) { 6411 final HandlerAction handlerAction = new HandlerAction(); 6412 handlerAction.action = action; 6413 6414 synchronized (mActions) { 6415 final ArrayList<HandlerAction> actions = mActions; 6416 6417 while (actions.remove(handlerAction)) { 6418 // Keep going 6419 } 6420 } 6421 } 6422 6423 void executeActions(Handler handler) { 6424 synchronized (mActions) { 6425 final ArrayList<HandlerAction> actions = mActions; 6426 final int count = actions.size(); 6427 6428 for (int i = 0; i < count; i++) { 6429 final HandlerAction handlerAction = actions.get(i); 6430 handler.postDelayed(handlerAction.action, handlerAction.delay); 6431 } 6432 6433 actions.clear(); 6434 } 6435 } 6436 6437 private static class HandlerAction { 6438 Runnable action; 6439 long delay; 6440 6441 @Override 6442 public boolean equals(Object o) { 6443 if (this == o) return true; 6444 if (o == null || getClass() != o.getClass()) return false; 6445 6446 HandlerAction that = (HandlerAction) o; 6447 return !(action != null ? !action.equals(that.action) : that.action != null); 6448 6449 } 6450 6451 @Override 6452 public int hashCode() { 6453 int result = action != null ? action.hashCode() : 0; 6454 result = 31 * result + (int) (delay ^ (delay >>> 32)); 6455 return result; 6456 } 6457 } 6458 } 6459 6460 /** 6461 * Class for managing the accessibility interaction connection 6462 * based on the global accessibility state. 6463 */ 6464 final class AccessibilityInteractionConnectionManager 6465 implements AccessibilityStateChangeListener { 6466 @Override 6467 public void onAccessibilityStateChanged(boolean enabled) { 6468 if (enabled) { 6469 ensureConnection(); 6470 if (mAttachInfo != null && mAttachInfo.mHasWindowFocus) { 6471 mView.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 6472 View focusedView = mView.findFocus(); 6473 if (focusedView != null && focusedView != mView) { 6474 focusedView.sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_FOCUSED); 6475 } 6476 } 6477 } else { 6478 ensureNoConnection(); 6479 mHandler.obtainMessage(MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST).sendToTarget(); 6480 } 6481 } 6482 6483 public void ensureConnection() { 6484 if (mAttachInfo != null) { 6485 final boolean registered = 6486 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED; 6487 if (!registered) { 6488 mAttachInfo.mAccessibilityWindowId = 6489 mAccessibilityManager.addAccessibilityInteractionConnection(mWindow, 6490 new AccessibilityInteractionConnection(ViewRootImpl.this)); 6491 } 6492 } 6493 } 6494 6495 public void ensureNoConnection() { 6496 final boolean registered = 6497 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED; 6498 if (registered) { 6499 mAttachInfo.mAccessibilityWindowId = AccessibilityNodeInfo.UNDEFINED; 6500 mAccessibilityManager.removeAccessibilityInteractionConnection(mWindow); 6501 } 6502 } 6503 } 6504 6505 /** 6506 * This class is an interface this ViewAncestor provides to the 6507 * AccessibilityManagerService to the latter can interact with 6508 * the view hierarchy in this ViewAncestor. 6509 */ 6510 static final class AccessibilityInteractionConnection 6511 extends IAccessibilityInteractionConnection.Stub { 6512 private final WeakReference<ViewRootImpl> mViewRootImpl; 6513 6514 AccessibilityInteractionConnection(ViewRootImpl viewRootImpl) { 6515 mViewRootImpl = new WeakReference<ViewRootImpl>(viewRootImpl); 6516 } 6517 6518 @Override 6519 public void findAccessibilityNodeInfoByAccessibilityId(long accessibilityNodeId, 6520 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 6521 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6522 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6523 if (viewRootImpl != null && viewRootImpl.mView != null) { 6524 viewRootImpl.getAccessibilityInteractionController() 6525 .findAccessibilityNodeInfoByAccessibilityIdClientThread(accessibilityNodeId, 6526 interactionId, callback, flags, interrogatingPid, interrogatingTid, 6527 spec); 6528 } else { 6529 // We cannot make the call and notify the caller so it does not wait. 6530 try { 6531 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 6532 } catch (RemoteException re) { 6533 /* best effort - ignore */ 6534 } 6535 } 6536 } 6537 6538 @Override 6539 public void performAccessibilityAction(long accessibilityNodeId, int action, 6540 Bundle arguments, int interactionId, 6541 IAccessibilityInteractionConnectionCallback callback, int flags, 6542 int interogatingPid, long interrogatingTid) { 6543 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6544 if (viewRootImpl != null && viewRootImpl.mView != null) { 6545 viewRootImpl.getAccessibilityInteractionController() 6546 .performAccessibilityActionClientThread(accessibilityNodeId, action, arguments, 6547 interactionId, callback, flags, interogatingPid, interrogatingTid); 6548 } else { 6549 // We cannot make the call and notify the caller so it does not wait. 6550 try { 6551 callback.setPerformAccessibilityActionResult(false, interactionId); 6552 } catch (RemoteException re) { 6553 /* best effort - ignore */ 6554 } 6555 } 6556 } 6557 6558 @Override 6559 public void findAccessibilityNodeInfosByViewId(long accessibilityNodeId, 6560 String viewId, int interactionId, 6561 IAccessibilityInteractionConnectionCallback callback, int flags, 6562 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6563 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6564 if (viewRootImpl != null && viewRootImpl.mView != null) { 6565 viewRootImpl.getAccessibilityInteractionController() 6566 .findAccessibilityNodeInfosByViewIdClientThread(accessibilityNodeId, 6567 viewId, interactionId, callback, flags, interrogatingPid, 6568 interrogatingTid, spec); 6569 } else { 6570 // We cannot make the call and notify the caller so it does not wait. 6571 try { 6572 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6573 } catch (RemoteException re) { 6574 /* best effort - ignore */ 6575 } 6576 } 6577 } 6578 6579 @Override 6580 public void findAccessibilityNodeInfosByText(long accessibilityNodeId, String text, 6581 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 6582 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6583 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6584 if (viewRootImpl != null && viewRootImpl.mView != null) { 6585 viewRootImpl.getAccessibilityInteractionController() 6586 .findAccessibilityNodeInfosByTextClientThread(accessibilityNodeId, text, 6587 interactionId, callback, flags, interrogatingPid, interrogatingTid, 6588 spec); 6589 } else { 6590 // We cannot make the call and notify the caller so it does not wait. 6591 try { 6592 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 6593 } catch (RemoteException re) { 6594 /* best effort - ignore */ 6595 } 6596 } 6597 } 6598 6599 @Override 6600 public void findFocus(long accessibilityNodeId, int focusType, int interactionId, 6601 IAccessibilityInteractionConnectionCallback callback, int flags, 6602 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6603 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6604 if (viewRootImpl != null && viewRootImpl.mView != null) { 6605 viewRootImpl.getAccessibilityInteractionController() 6606 .findFocusClientThread(accessibilityNodeId, focusType, interactionId, callback, 6607 flags, interrogatingPid, interrogatingTid, spec); 6608 } else { 6609 // We cannot make the call and notify the caller so it does not wait. 6610 try { 6611 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6612 } catch (RemoteException re) { 6613 /* best effort - ignore */ 6614 } 6615 } 6616 } 6617 6618 @Override 6619 public void focusSearch(long accessibilityNodeId, int direction, int interactionId, 6620 IAccessibilityInteractionConnectionCallback callback, int flags, 6621 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6622 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6623 if (viewRootImpl != null && viewRootImpl.mView != null) { 6624 viewRootImpl.getAccessibilityInteractionController() 6625 .focusSearchClientThread(accessibilityNodeId, direction, interactionId, 6626 callback, flags, interrogatingPid, interrogatingTid, spec); 6627 } else { 6628 // We cannot make the call and notify the caller so it does not wait. 6629 try { 6630 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6631 } catch (RemoteException re) { 6632 /* best effort - ignore */ 6633 } 6634 } 6635 } 6636 } 6637 6638 private class SendWindowContentChangedAccessibilityEvent implements Runnable { 6639 private int mChangeTypes = 0; 6640 6641 public View mSource; 6642 public long mLastEventTimeMillis; 6643 6644 @Override 6645 public void run() { 6646 // The accessibility may be turned off while we were waiting so check again. 6647 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 6648 mLastEventTimeMillis = SystemClock.uptimeMillis(); 6649 AccessibilityEvent event = AccessibilityEvent.obtain(); 6650 event.setEventType(AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED); 6651 event.setContentChangeTypes(mChangeTypes); 6652 mSource.sendAccessibilityEventUnchecked(event); 6653 } else { 6654 mLastEventTimeMillis = 0; 6655 } 6656 // In any case reset to initial state. 6657 mSource.resetSubtreeAccessibilityStateChanged(); 6658 mSource = null; 6659 mChangeTypes = 0; 6660 } 6661 6662 public void runOrPost(View source, int changeType) { 6663 if (mSource != null) { 6664 // If there is no common predecessor, then mSource points to 6665 // a removed view, hence in this case always prefer the source. 6666 View predecessor = getCommonPredecessor(mSource, source); 6667 mSource = (predecessor != null) ? predecessor : source; 6668 mChangeTypes |= changeType; 6669 return; 6670 } 6671 mSource = source; 6672 mChangeTypes = changeType; 6673 final long timeSinceLastMillis = SystemClock.uptimeMillis() - mLastEventTimeMillis; 6674 final long minEventIntevalMillis = 6675 ViewConfiguration.getSendRecurringAccessibilityEventsInterval(); 6676 if (timeSinceLastMillis >= minEventIntevalMillis) { 6677 mSource.removeCallbacks(this); 6678 run(); 6679 } else { 6680 mSource.postDelayed(this, minEventIntevalMillis - timeSinceLastMillis); 6681 } 6682 } 6683 } 6684} 6685