ViewRootImpl.java revision edaf6af16a5c33557a9c4ed00f9bebdac0dd83aa
1/* 2 * Copyright (C) 2006 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.view; 18 19import android.Manifest; 20import android.animation.LayoutTransition; 21import android.app.ActivityManagerNative; 22import android.content.ClipDescription; 23import android.content.ComponentCallbacks; 24import android.content.ComponentCallbacks2; 25import android.content.Context; 26import android.content.pm.PackageManager; 27import android.content.res.CompatibilityInfo; 28import android.content.res.Configuration; 29import android.content.res.Resources; 30import android.graphics.Canvas; 31import android.graphics.Paint; 32import android.graphics.PixelFormat; 33import android.graphics.Point; 34import android.graphics.PointF; 35import android.graphics.PorterDuff; 36import android.graphics.Rect; 37import android.graphics.Region; 38import android.graphics.drawable.Drawable; 39import android.media.AudioManager; 40import android.os.Binder; 41import android.os.Bundle; 42import android.os.Debug; 43import android.os.Handler; 44import android.os.Looper; 45import android.os.Message; 46import android.os.ParcelFileDescriptor; 47import android.os.PowerManager; 48import android.os.Process; 49import android.os.RemoteException; 50import android.os.SystemClock; 51import android.os.SystemProperties; 52import android.os.Trace; 53import android.util.AndroidRuntimeException; 54import android.util.DisplayMetrics; 55import android.util.Log; 56import android.util.Slog; 57import android.util.TypedValue; 58import android.view.View.AttachInfo; 59import android.view.View.MeasureSpec; 60import android.view.accessibility.AccessibilityEvent; 61import android.view.accessibility.AccessibilityManager; 62import android.view.accessibility.AccessibilityManager.AccessibilityStateChangeListener; 63import android.view.accessibility.AccessibilityNodeInfo; 64import android.view.accessibility.AccessibilityNodeProvider; 65import android.view.accessibility.IAccessibilityInteractionConnection; 66import android.view.accessibility.IAccessibilityInteractionConnectionCallback; 67import android.view.animation.AccelerateDecelerateInterpolator; 68import android.view.animation.Interpolator; 69import android.view.inputmethod.InputConnection; 70import android.view.inputmethod.InputMethodManager; 71import android.widget.Scroller; 72 73import com.android.internal.R; 74import com.android.internal.os.SomeArgs; 75import com.android.internal.policy.PolicyManager; 76import com.android.internal.view.BaseSurfaceHolder; 77import com.android.internal.view.RootViewSurfaceTaker; 78 79import java.io.IOException; 80import java.io.OutputStream; 81import java.lang.ref.WeakReference; 82import java.util.ArrayList; 83import java.util.HashSet; 84import java.util.Locale; 85 86/** 87 * The top of a view hierarchy, implementing the needed protocol between View 88 * and the WindowManager. This is for the most part an internal implementation 89 * detail of {@link WindowManagerGlobal}. 90 * 91 * {@hide} 92 */ 93@SuppressWarnings({"EmptyCatchBlock", "PointlessBooleanExpression"}) 94public final class ViewRootImpl implements ViewParent, 95 View.AttachInfo.Callbacks, HardwareRenderer.HardwareDrawCallbacks { 96 private static final String TAG = "ViewRootImpl"; 97 private static final boolean DBG = false; 98 private static final boolean LOCAL_LOGV = false; 99 /** @noinspection PointlessBooleanExpression*/ 100 private static final boolean DEBUG_DRAW = false || LOCAL_LOGV; 101 private static final boolean DEBUG_LAYOUT = false || LOCAL_LOGV; 102 private static final boolean DEBUG_DIALOG = false || LOCAL_LOGV; 103 private static final boolean DEBUG_INPUT_RESIZE = false || LOCAL_LOGV; 104 private static final boolean DEBUG_ORIENTATION = false || LOCAL_LOGV; 105 private static final boolean DEBUG_TRACKBALL = false || LOCAL_LOGV; 106 private static final boolean DEBUG_IMF = false || LOCAL_LOGV; 107 private static final boolean DEBUG_CONFIGURATION = false || LOCAL_LOGV; 108 private static final boolean DEBUG_FPS = false; 109 private static final boolean DEBUG_INPUT_PROCESSING = false || LOCAL_LOGV; 110 111 /** 112 * Set this system property to true to force the view hierarchy to render 113 * at 60 Hz. This can be used to measure the potential framerate. 114 */ 115 private static final String PROPERTY_PROFILE_RENDERING = "viewroot.profile_rendering"; 116 private static final String PROPERTY_MEDIA_DISABLED = "config.disable_media"; 117 118 /** 119 * Maximum time we allow the user to roll the trackball enough to generate 120 * a key event, before resetting the counters. 121 */ 122 static final int MAX_TRACKBALL_DELAY = 250; 123 124 static final ThreadLocal<RunQueue> sRunQueues = new ThreadLocal<RunQueue>(); 125 126 static final ArrayList<Runnable> sFirstDrawHandlers = new ArrayList<Runnable>(); 127 static boolean sFirstDrawComplete = false; 128 129 static final ArrayList<ComponentCallbacks> sConfigCallbacks 130 = new ArrayList<ComponentCallbacks>(); 131 132 final Context mContext; 133 final IWindowSession mWindowSession; 134 final Display mDisplay; 135 final String mBasePackageName; 136 137 final int[] mTmpLocation = new int[2]; 138 139 final TypedValue mTmpValue = new TypedValue(); 140 141 final Thread mThread; 142 143 final WindowLeaked mLocation; 144 145 final WindowManager.LayoutParams mWindowAttributes = new WindowManager.LayoutParams(); 146 147 final W mWindow; 148 149 final int mTargetSdkVersion; 150 151 int mSeq; 152 153 View mView; 154 155 View mAccessibilityFocusedHost; 156 AccessibilityNodeInfo mAccessibilityFocusedVirtualView; 157 158 int mViewVisibility; 159 boolean mAppVisible = true; 160 int mOrigWindowType = -1; 161 162 // Set to true if the owner of this window is in the stopped state, 163 // so the window should no longer be active. 164 boolean mStopped = false; 165 166 boolean mLastInCompatMode = false; 167 168 SurfaceHolder.Callback2 mSurfaceHolderCallback; 169 BaseSurfaceHolder mSurfaceHolder; 170 boolean mIsCreating; 171 boolean mDrawingAllowed; 172 173 final Region mTransparentRegion; 174 final Region mPreviousTransparentRegion; 175 176 int mWidth; 177 int mHeight; 178 Rect mDirty; 179 final Rect mCurrentDirty = new Rect(); 180 boolean mIsAnimating; 181 182 CompatibilityInfo.Translator mTranslator; 183 184 final View.AttachInfo mAttachInfo; 185 InputChannel mInputChannel; 186 InputQueue.Callback mInputQueueCallback; 187 InputQueue mInputQueue; 188 FallbackEventHandler mFallbackEventHandler; 189 Choreographer mChoreographer; 190 191 final Rect mTempRect; // used in the transaction to not thrash the heap. 192 final Rect mVisRect; // used to retrieve visible rect of focused view. 193 194 boolean mTraversalScheduled; 195 int mTraversalBarrier; 196 boolean mWillDrawSoon; 197 /** Set to true while in performTraversals for detecting when die(true) is called from internal 198 * callbacks such as onMeasure, onPreDraw, onDraw and deferring doDie() until later. */ 199 boolean mIsInTraversal; 200 boolean mFitSystemWindowsRequested; 201 boolean mLayoutRequested; 202 boolean mFirst; 203 boolean mReportNextDraw; 204 boolean mFullRedrawNeeded; 205 boolean mNewSurfaceNeeded; 206 boolean mHasHadWindowFocus; 207 boolean mLastWasImTarget; 208 boolean mWindowsAnimating; 209 boolean mDrawDuringWindowsAnimating; 210 boolean mIsDrawing; 211 int mLastSystemUiVisibility; 212 int mClientWindowLayoutFlags; 213 boolean mLastOverscanRequested; 214 215 // Pool of queued input events. 216 private static final int MAX_QUEUED_INPUT_EVENT_POOL_SIZE = 10; 217 private QueuedInputEvent mQueuedInputEventPool; 218 private int mQueuedInputEventPoolSize; 219 220 /* Input event queue. 221 * Pending input events are input events waiting to be delivered to the input stages 222 * and handled by the application. 223 */ 224 QueuedInputEvent mPendingInputEventHead; 225 QueuedInputEvent mPendingInputEventTail; 226 int mPendingInputEventCount; 227 boolean mProcessInputEventsScheduled; 228 String mPendingInputEventQueueLengthCounterName = "pq"; 229 230 InputStage mFirstInputStage; 231 InputStage mFirstPostImeInputStage; 232 233 boolean mFlipControllerFallbackKeys; 234 235 boolean mWindowAttributesChanged = false; 236 int mWindowAttributesChangesFlag = 0; 237 238 // These can be accessed by any thread, must be protected with a lock. 239 // Surface can never be reassigned or cleared (use Surface.clear()). 240 private final Surface mSurface = new Surface(); 241 242 boolean mAdded; 243 boolean mAddedTouchMode; 244 245 final DisplayAdjustments mDisplayAdjustments; 246 247 // These are accessed by multiple threads. 248 final Rect mWinFrame; // frame given by window manager. 249 250 final Rect mPendingOverscanInsets = new Rect(); 251 final Rect mPendingVisibleInsets = new Rect(); 252 final Rect mPendingContentInsets = new Rect(); 253 final ViewTreeObserver.InternalInsetsInfo mLastGivenInsets 254 = new ViewTreeObserver.InternalInsetsInfo(); 255 256 final Rect mFitSystemWindowsInsets = new Rect(); 257 258 final Configuration mLastConfiguration = new Configuration(); 259 final Configuration mPendingConfiguration = new Configuration(); 260 261 boolean mScrollMayChange; 262 int mSoftInputMode; 263 WeakReference<View> mLastScrolledFocus; 264 int mScrollY; 265 int mCurScrollY; 266 Scroller mScroller; 267 HardwareLayer mResizeBuffer; 268 long mResizeBufferStartTime; 269 int mResizeBufferDuration; 270 static final Interpolator mResizeInterpolator = new AccelerateDecelerateInterpolator(); 271 private ArrayList<LayoutTransition> mPendingTransitions; 272 273 final ViewConfiguration mViewConfiguration; 274 275 /* Drag/drop */ 276 ClipDescription mDragDescription; 277 View mCurrentDragView; 278 volatile Object mLocalDragState; 279 final PointF mDragPoint = new PointF(); 280 final PointF mLastTouchPoint = new PointF(); 281 282 private boolean mProfileRendering; 283 private Choreographer.FrameCallback mRenderProfiler; 284 private boolean mRenderProfilingEnabled; 285 286 private boolean mMediaDisabled; 287 288 // Variables to track frames per second, enabled via DEBUG_FPS flag 289 private long mFpsStartTime = -1; 290 private long mFpsPrevTime = -1; 291 private int mFpsNumFrames; 292 293 private final ArrayList<DisplayList> mDisplayLists = new ArrayList<DisplayList>(); 294 295 /** 296 * see {@link #playSoundEffect(int)} 297 */ 298 AudioManager mAudioManager; 299 300 final AccessibilityManager mAccessibilityManager; 301 302 AccessibilityInteractionController mAccessibilityInteractionController; 303 304 AccessibilityInteractionConnectionManager mAccessibilityInteractionConnectionManager; 305 306 SendWindowContentChangedAccessibilityEvent mSendWindowContentChangedAccessibilityEvent; 307 308 HashSet<View> mTempHashSet; 309 310 private final int mDensity; 311 private final int mNoncompatDensity; 312 313 private boolean mInLayout = false; 314 ArrayList<View> mLayoutRequesters = new ArrayList<View>(); 315 boolean mHandlingLayoutInLayoutRequest = false; 316 317 private int mViewLayoutDirectionInitial; 318 319 /** Set to true once doDie() has been called. */ 320 private boolean mRemoved; 321 322 /** 323 * Consistency verifier for debugging purposes. 324 */ 325 protected final InputEventConsistencyVerifier mInputEventConsistencyVerifier = 326 InputEventConsistencyVerifier.isInstrumentationEnabled() ? 327 new InputEventConsistencyVerifier(this, 0) : null; 328 329 static final class SystemUiVisibilityInfo { 330 int seq; 331 int globalVisibility; 332 int localValue; 333 int localChanges; 334 } 335 336 public ViewRootImpl(Context context, Display display) { 337 mContext = context; 338 mWindowSession = WindowManagerGlobal.getWindowSession(); 339 mDisplay = display; 340 mBasePackageName = context.getBasePackageName(); 341 342 mDisplayAdjustments = display.getDisplayAdjustments(); 343 344 mThread = Thread.currentThread(); 345 mLocation = new WindowLeaked(null); 346 mLocation.fillInStackTrace(); 347 mWidth = -1; 348 mHeight = -1; 349 mDirty = new Rect(); 350 mTempRect = new Rect(); 351 mVisRect = new Rect(); 352 mWinFrame = new Rect(); 353 mWindow = new W(this); 354 mTargetSdkVersion = context.getApplicationInfo().targetSdkVersion; 355 mViewVisibility = View.GONE; 356 mTransparentRegion = new Region(); 357 mPreviousTransparentRegion = new Region(); 358 mFirst = true; // true for the first time the view is added 359 mAdded = false; 360 mAccessibilityManager = AccessibilityManager.getInstance(context); 361 mAccessibilityInteractionConnectionManager = 362 new AccessibilityInteractionConnectionManager(); 363 mAccessibilityManager.addAccessibilityStateChangeListener( 364 mAccessibilityInteractionConnectionManager); 365 mAttachInfo = new View.AttachInfo(mWindowSession, mWindow, display, this, mHandler, this); 366 mViewConfiguration = ViewConfiguration.get(context); 367 mDensity = context.getResources().getDisplayMetrics().densityDpi; 368 mNoncompatDensity = context.getResources().getDisplayMetrics().noncompatDensityDpi; 369 mFallbackEventHandler = PolicyManager.makeNewFallbackEventHandler(context); 370 mChoreographer = Choreographer.getInstance(); 371 mFlipControllerFallbackKeys = 372 context.getResources().getBoolean(R.bool.flip_controller_fallback_keys); 373 374 PowerManager powerManager = (PowerManager) context.getSystemService(Context.POWER_SERVICE); 375 mAttachInfo.mScreenOn = powerManager.isScreenOn(); 376 loadSystemProperties(); 377 } 378 379 public static void addFirstDrawHandler(Runnable callback) { 380 synchronized (sFirstDrawHandlers) { 381 if (!sFirstDrawComplete) { 382 sFirstDrawHandlers.add(callback); 383 } 384 } 385 } 386 387 public static void addConfigCallback(ComponentCallbacks callback) { 388 synchronized (sConfigCallbacks) { 389 sConfigCallbacks.add(callback); 390 } 391 } 392 393 // FIXME for perf testing only 394 private boolean mProfile = false; 395 396 /** 397 * Call this to profile the next traversal call. 398 * FIXME for perf testing only. Remove eventually 399 */ 400 public void profile() { 401 mProfile = true; 402 } 403 404 /** 405 * Indicates whether we are in touch mode. Calling this method triggers an IPC 406 * call and should be avoided whenever possible. 407 * 408 * @return True, if the device is in touch mode, false otherwise. 409 * 410 * @hide 411 */ 412 static boolean isInTouchMode() { 413 IWindowSession windowSession = WindowManagerGlobal.peekWindowSession(); 414 if (windowSession != null) { 415 try { 416 return windowSession.getInTouchMode(); 417 } catch (RemoteException e) { 418 } 419 } 420 return false; 421 } 422 423 /** 424 * We have one child 425 */ 426 public void setView(View view, WindowManager.LayoutParams attrs, View panelParentView) { 427 synchronized (this) { 428 if (mView == null) { 429 mView = view; 430 mViewLayoutDirectionInitial = mView.getRawLayoutDirection(); 431 mFallbackEventHandler.setView(view); 432 mWindowAttributes.copyFrom(attrs); 433 if (mWindowAttributes.packageName == null) { 434 mWindowAttributes.packageName = mBasePackageName; 435 } 436 attrs = mWindowAttributes; 437 // Keep track of the actual window flags supplied by the client. 438 mClientWindowLayoutFlags = attrs.flags; 439 440 setAccessibilityFocus(null, null); 441 442 if (view instanceof RootViewSurfaceTaker) { 443 mSurfaceHolderCallback = 444 ((RootViewSurfaceTaker)view).willYouTakeTheSurface(); 445 if (mSurfaceHolderCallback != null) { 446 mSurfaceHolder = new TakenSurfaceHolder(); 447 mSurfaceHolder.setFormat(PixelFormat.UNKNOWN); 448 } 449 } 450 451 CompatibilityInfo compatibilityInfo = mDisplayAdjustments.getCompatibilityInfo(); 452 mTranslator = compatibilityInfo.getTranslator(); 453 mDisplayAdjustments.setActivityToken(attrs.token); 454 455 // If the application owns the surface, don't enable hardware acceleration 456 if (mSurfaceHolder == null) { 457 enableHardwareAcceleration(attrs); 458 } 459 460 boolean restore = false; 461 if (mTranslator != null) { 462 mSurface.setCompatibilityTranslator(mTranslator); 463 restore = true; 464 attrs.backup(); 465 mTranslator.translateWindowLayout(attrs); 466 } 467 if (DEBUG_LAYOUT) Log.d(TAG, "WindowLayout in setView:" + attrs); 468 469 if (!compatibilityInfo.supportsScreen()) { 470 attrs.flags |= WindowManager.LayoutParams.FLAG_COMPATIBLE_WINDOW; 471 mLastInCompatMode = true; 472 } 473 474 mSoftInputMode = attrs.softInputMode; 475 mWindowAttributesChanged = true; 476 mWindowAttributesChangesFlag = WindowManager.LayoutParams.EVERYTHING_CHANGED; 477 mAttachInfo.mRootView = view; 478 mAttachInfo.mScalingRequired = mTranslator != null; 479 mAttachInfo.mApplicationScale = 480 mTranslator == null ? 1.0f : mTranslator.applicationScale; 481 if (panelParentView != null) { 482 mAttachInfo.mPanelParentWindowToken 483 = panelParentView.getApplicationWindowToken(); 484 } 485 mAdded = true; 486 int res; /* = WindowManagerImpl.ADD_OKAY; */ 487 488 // Schedule the first layout -before- adding to the window 489 // manager, to make sure we do the relayout before receiving 490 // any other events from the system. 491 requestLayout(); 492 if ((mWindowAttributes.inputFeatures 493 & WindowManager.LayoutParams.INPUT_FEATURE_NO_INPUT_CHANNEL) == 0) { 494 mInputChannel = new InputChannel(); 495 } 496 try { 497 mOrigWindowType = mWindowAttributes.type; 498 mAttachInfo.mRecomputeGlobalAttributes = true; 499 collectViewAttributes(); 500 res = mWindowSession.addToDisplay(mWindow, mSeq, mWindowAttributes, 501 getHostVisibility(), mDisplay.getDisplayId(), 502 mAttachInfo.mContentInsets, mInputChannel); 503 } catch (RemoteException e) { 504 mAdded = false; 505 mView = null; 506 mAttachInfo.mRootView = null; 507 mInputChannel = null; 508 mFallbackEventHandler.setView(null); 509 unscheduleTraversals(); 510 setAccessibilityFocus(null, null); 511 throw new RuntimeException("Adding window failed", e); 512 } finally { 513 if (restore) { 514 attrs.restore(); 515 } 516 } 517 518 if (mTranslator != null) { 519 mTranslator.translateRectInScreenToAppWindow(mAttachInfo.mContentInsets); 520 } 521 mPendingOverscanInsets.set(0, 0, 0, 0); 522 mPendingContentInsets.set(mAttachInfo.mContentInsets); 523 mPendingVisibleInsets.set(0, 0, 0, 0); 524 if (DEBUG_LAYOUT) Log.v(TAG, "Added window " + mWindow); 525 if (res < WindowManagerGlobal.ADD_OKAY) { 526 mAttachInfo.mRootView = null; 527 mAdded = false; 528 mFallbackEventHandler.setView(null); 529 unscheduleTraversals(); 530 setAccessibilityFocus(null, null); 531 switch (res) { 532 case WindowManagerGlobal.ADD_BAD_APP_TOKEN: 533 case WindowManagerGlobal.ADD_BAD_SUBWINDOW_TOKEN: 534 throw new WindowManager.BadTokenException( 535 "Unable to add window -- token " + attrs.token 536 + " is not valid; is your activity running?"); 537 case WindowManagerGlobal.ADD_NOT_APP_TOKEN: 538 throw new WindowManager.BadTokenException( 539 "Unable to add window -- token " + attrs.token 540 + " is not for an application"); 541 case WindowManagerGlobal.ADD_APP_EXITING: 542 throw new WindowManager.BadTokenException( 543 "Unable to add window -- app for token " + attrs.token 544 + " is exiting"); 545 case WindowManagerGlobal.ADD_DUPLICATE_ADD: 546 throw new WindowManager.BadTokenException( 547 "Unable to add window -- window " + mWindow 548 + " has already been added"); 549 case WindowManagerGlobal.ADD_STARTING_NOT_NEEDED: 550 // Silently ignore -- we would have just removed it 551 // right away, anyway. 552 return; 553 case WindowManagerGlobal.ADD_MULTIPLE_SINGLETON: 554 throw new WindowManager.BadTokenException( 555 "Unable to add window " + mWindow + 556 " -- another window of this type already exists"); 557 case WindowManagerGlobal.ADD_PERMISSION_DENIED: 558 throw new WindowManager.BadTokenException( 559 "Unable to add window " + mWindow + 560 " -- permission denied for this window type"); 561 case WindowManagerGlobal.ADD_INVALID_DISPLAY: 562 throw new WindowManager.InvalidDisplayException( 563 "Unable to add window " + mWindow + 564 " -- the specified display can not be found"); 565 } 566 throw new RuntimeException( 567 "Unable to add window -- unknown error code " + res); 568 } 569 570 if (view instanceof RootViewSurfaceTaker) { 571 mInputQueueCallback = 572 ((RootViewSurfaceTaker)view).willYouTakeTheInputQueue(); 573 } 574 if (mInputChannel != null) { 575 if (mInputQueueCallback != null) { 576 mInputQueue = new InputQueue(); 577 mInputQueueCallback.onInputQueueCreated(mInputQueue); 578 } 579 mInputEventReceiver = new WindowInputEventReceiver(mInputChannel, 580 Looper.myLooper()); 581 } 582 583 view.assignParent(this); 584 mAddedTouchMode = (res & WindowManagerGlobal.ADD_FLAG_IN_TOUCH_MODE) != 0; 585 mAppVisible = (res & WindowManagerGlobal.ADD_FLAG_APP_VISIBLE) != 0; 586 587 if (mAccessibilityManager.isEnabled()) { 588 mAccessibilityInteractionConnectionManager.ensureConnection(); 589 } 590 591 if (view.getImportantForAccessibility() == View.IMPORTANT_FOR_ACCESSIBILITY_AUTO) { 592 view.setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_YES); 593 } 594 595 // Set up the input pipeline. 596 CharSequence counterSuffix = attrs.getTitle(); 597 InputStage syntheticInputStage = new SyntheticInputStage(); 598 InputStage viewPostImeStage = new ViewPostImeInputStage(syntheticInputStage); 599 InputStage nativePostImeStage = new NativePostImeInputStage(viewPostImeStage, 600 "aq:native-post-ime:" + counterSuffix); 601 InputStage earlyPostImeStage = new EarlyPostImeInputStage(nativePostImeStage); 602 InputStage imeStage = new ImeInputStage(earlyPostImeStage, 603 "aq:ime:" + counterSuffix); 604 InputStage viewPreImeStage = new ViewPreImeInputStage(imeStage); 605 InputStage nativePreImeStage = new NativePreImeInputStage(viewPreImeStage, 606 "aq:native-pre-ime:" + counterSuffix); 607 608 mFirstInputStage = nativePreImeStage; 609 mFirstPostImeInputStage = earlyPostImeStage; 610 mPendingInputEventQueueLengthCounterName = "aq:pending:" + counterSuffix; 611 } 612 } 613 } 614 615 /** Whether the window is in local focus mode or not */ 616 private boolean isInLocalFocusMode() { 617 return (mWindowAttributes.flags & WindowManager.LayoutParams.FLAG_LOCAL_FOCUS_MODE) != 0; 618 } 619 620 void destroyHardwareResources() { 621 invalidateDisplayLists(); 622 if (mAttachInfo.mHardwareRenderer != null) { 623 mAttachInfo.mHardwareRenderer.destroyHardwareResources(mView); 624 mAttachInfo.mHardwareRenderer.destroy(false); 625 } 626 } 627 628 void destroyHardwareLayers() { 629 if (mThread != Thread.currentThread()) { 630 if (mAttachInfo.mHardwareRenderer != null && 631 mAttachInfo.mHardwareRenderer.isEnabled()) { 632 HardwareRenderer.trimMemory(ComponentCallbacks2.TRIM_MEMORY_MODERATE); 633 } 634 } else { 635 invalidateDisplayLists(); 636 if (mAttachInfo.mHardwareRenderer != null && 637 mAttachInfo.mHardwareRenderer.isEnabled()) { 638 mAttachInfo.mHardwareRenderer.destroyLayers(mView); 639 } 640 } 641 } 642 643 void pushHardwareLayerUpdate(HardwareLayer layer) { 644 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled()) { 645 mAttachInfo.mHardwareRenderer.pushLayerUpdate(layer); 646 } 647 } 648 649 void flushHardwareLayerUpdates() { 650 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled() && 651 mAttachInfo.mHardwareRenderer.validate()) { 652 mAttachInfo.mHardwareRenderer.flushLayerUpdates(); 653 } 654 } 655 656 void dispatchFlushHardwareLayerUpdates() { 657 mHandler.removeMessages(MSG_FLUSH_LAYER_UPDATES); 658 mHandler.sendMessageAtFrontOfQueue(mHandler.obtainMessage(MSG_FLUSH_LAYER_UPDATES)); 659 } 660 661 public boolean attachFunctor(int functor) { 662 //noinspection SimplifiableIfStatement 663 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled()) { 664 return mAttachInfo.mHardwareRenderer.attachFunctor(mAttachInfo, functor); 665 } 666 return false; 667 } 668 669 public void detachFunctor(int functor) { 670 if (mAttachInfo.mHardwareRenderer != null) { 671 mAttachInfo.mHardwareRenderer.detachFunctor(functor); 672 } 673 } 674 675 private void enableHardwareAcceleration(WindowManager.LayoutParams attrs) { 676 mAttachInfo.mHardwareAccelerated = false; 677 mAttachInfo.mHardwareAccelerationRequested = false; 678 679 // Don't enable hardware acceleration when the application is in compatibility mode 680 if (mTranslator != null) return; 681 682 // Try to enable hardware acceleration if requested 683 final boolean hardwareAccelerated = 684 (attrs.flags & WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED) != 0; 685 686 if (hardwareAccelerated) { 687 if (!HardwareRenderer.isAvailable()) { 688 return; 689 } 690 691 // Persistent processes (including the system) should not do 692 // accelerated rendering on low-end devices. In that case, 693 // sRendererDisabled will be set. In addition, the system process 694 // itself should never do accelerated rendering. In that case, both 695 // sRendererDisabled and sSystemRendererDisabled are set. When 696 // sSystemRendererDisabled is set, PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED 697 // can be used by code on the system process to escape that and enable 698 // HW accelerated drawing. (This is basically for the lock screen.) 699 700 final boolean fakeHwAccelerated = (attrs.privateFlags & 701 WindowManager.LayoutParams.PRIVATE_FLAG_FAKE_HARDWARE_ACCELERATED) != 0; 702 final boolean forceHwAccelerated = (attrs.privateFlags & 703 WindowManager.LayoutParams.PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED) != 0; 704 705 if (!HardwareRenderer.sRendererDisabled || (HardwareRenderer.sSystemRendererDisabled 706 && forceHwAccelerated)) { 707 // Don't enable hardware acceleration when we're not on the main thread 708 if (!HardwareRenderer.sSystemRendererDisabled && 709 Looper.getMainLooper() != Looper.myLooper()) { 710 Log.w(HardwareRenderer.LOG_TAG, "Attempting to initialize hardware " 711 + "acceleration outside of the main thread, aborting"); 712 return; 713 } 714 715 if (mAttachInfo.mHardwareRenderer != null) { 716 mAttachInfo.mHardwareRenderer.destroy(true); 717 } 718 719 final boolean translucent = attrs.format != PixelFormat.OPAQUE; 720 mAttachInfo.mHardwareRenderer = HardwareRenderer.createGlRenderer(2, translucent); 721 if (mAttachInfo.mHardwareRenderer != null) { 722 mAttachInfo.mHardwareRenderer.setName(attrs.getTitle().toString()); 723 mAttachInfo.mHardwareAccelerated = 724 mAttachInfo.mHardwareAccelerationRequested = true; 725 } 726 } else if (fakeHwAccelerated) { 727 // The window had wanted to use hardware acceleration, but this 728 // is not allowed in its process. By setting this flag, it can 729 // still render as if it was accelerated. This is basically for 730 // the preview windows the window manager shows for launching 731 // applications, so they will look more like the app being launched. 732 mAttachInfo.mHardwareAccelerationRequested = true; 733 } 734 } 735 } 736 737 public View getView() { 738 return mView; 739 } 740 741 final WindowLeaked getLocation() { 742 return mLocation; 743 } 744 745 void setLayoutParams(WindowManager.LayoutParams attrs, boolean newView) { 746 synchronized (this) { 747 int oldSoftInputMode = mWindowAttributes.softInputMode; 748 // Keep track of the actual window flags supplied by the client. 749 mClientWindowLayoutFlags = attrs.flags; 750 // preserve compatible window flag if exists. 751 int compatibleWindowFlag = 752 mWindowAttributes.flags & WindowManager.LayoutParams.FLAG_COMPATIBLE_WINDOW; 753 // transfer over system UI visibility values as they carry current state. 754 attrs.systemUiVisibility = mWindowAttributes.systemUiVisibility; 755 attrs.subtreeSystemUiVisibility = mWindowAttributes.subtreeSystemUiVisibility; 756 mWindowAttributesChangesFlag = mWindowAttributes.copyFrom(attrs); 757 if (mWindowAttributes.packageName == null) { 758 mWindowAttributes.packageName = mBasePackageName; 759 } 760 mWindowAttributes.flags |= compatibleWindowFlag; 761 762 applyKeepScreenOnFlag(mWindowAttributes); 763 764 if (newView) { 765 mSoftInputMode = attrs.softInputMode; 766 requestLayout(); 767 } 768 // Don't lose the mode we last auto-computed. 769 if ((attrs.softInputMode&WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 770 == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 771 mWindowAttributes.softInputMode = (mWindowAttributes.softInputMode 772 & ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 773 | (oldSoftInputMode 774 & WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST); 775 } 776 mWindowAttributesChanged = true; 777 scheduleTraversals(); 778 } 779 } 780 781 void handleAppVisibility(boolean visible) { 782 if (mAppVisible != visible) { 783 mAppVisible = visible; 784 scheduleTraversals(); 785 } 786 } 787 788 void handleGetNewSurface() { 789 mNewSurfaceNeeded = true; 790 mFullRedrawNeeded = true; 791 scheduleTraversals(); 792 } 793 794 void handleScreenStateChange(boolean on) { 795 if (on != mAttachInfo.mScreenOn) { 796 mAttachInfo.mScreenOn = on; 797 if (mView != null) { 798 mView.dispatchScreenStateChanged(on ? View.SCREEN_STATE_ON : View.SCREEN_STATE_OFF); 799 } 800 if (on) { 801 mFullRedrawNeeded = true; 802 scheduleTraversals(); 803 } 804 } 805 } 806 807 @Override 808 public void requestFitSystemWindows() { 809 checkThread(); 810 mFitSystemWindowsRequested = true; 811 scheduleTraversals(); 812 } 813 814 @Override 815 public void requestLayout() { 816 if (!mHandlingLayoutInLayoutRequest) { 817 checkThread(); 818 mLayoutRequested = true; 819 scheduleTraversals(); 820 } 821 } 822 823 @Override 824 public boolean isLayoutRequested() { 825 return mLayoutRequested; 826 } 827 828 void invalidate() { 829 mDirty.set(0, 0, mWidth, mHeight); 830 scheduleTraversals(); 831 } 832 833 void invalidateWorld(View view) { 834 view.invalidate(); 835 if (view instanceof ViewGroup) { 836 ViewGroup parent = (ViewGroup) view; 837 for (int i = 0; i < parent.getChildCount(); i++) { 838 invalidateWorld(parent.getChildAt(i)); 839 } 840 } 841 } 842 843 @Override 844 public void invalidateChild(View child, Rect dirty) { 845 invalidateChildInParent(null, dirty); 846 } 847 848 @Override 849 public ViewParent invalidateChildInParent(int[] location, Rect dirty) { 850 checkThread(); 851 if (DEBUG_DRAW) Log.v(TAG, "Invalidate child: " + dirty); 852 853 if (dirty == null) { 854 invalidate(); 855 return null; 856 } else if (dirty.isEmpty() && !mIsAnimating) { 857 return null; 858 } 859 860 if (mCurScrollY != 0 || mTranslator != null) { 861 mTempRect.set(dirty); 862 dirty = mTempRect; 863 if (mCurScrollY != 0) { 864 dirty.offset(0, -mCurScrollY); 865 } 866 if (mTranslator != null) { 867 mTranslator.translateRectInAppWindowToScreen(dirty); 868 } 869 if (mAttachInfo.mScalingRequired) { 870 dirty.inset(-1, -1); 871 } 872 } 873 874 final Rect localDirty = mDirty; 875 if (!localDirty.isEmpty() && !localDirty.contains(dirty)) { 876 mAttachInfo.mSetIgnoreDirtyState = true; 877 mAttachInfo.mIgnoreDirtyState = true; 878 } 879 880 // Add the new dirty rect to the current one 881 localDirty.union(dirty.left, dirty.top, dirty.right, dirty.bottom); 882 // Intersect with the bounds of the window to skip 883 // updates that lie outside of the visible region 884 final float appScale = mAttachInfo.mApplicationScale; 885 final boolean intersected = localDirty.intersect(0, 0, 886 (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 887 if (!intersected) { 888 localDirty.setEmpty(); 889 } 890 if (!mWillDrawSoon && (intersected || mIsAnimating)) { 891 scheduleTraversals(); 892 } 893 894 return null; 895 } 896 897 void setStopped(boolean stopped) { 898 if (mStopped != stopped) { 899 mStopped = stopped; 900 if (!stopped) { 901 scheduleTraversals(); 902 } 903 } 904 } 905 906 @Override 907 public ViewParent getParent() { 908 return null; 909 } 910 911 @Override 912 public boolean getChildVisibleRect(View child, Rect r, android.graphics.Point offset) { 913 if (child != mView) { 914 throw new RuntimeException("child is not mine, honest!"); 915 } 916 // Note: don't apply scroll offset, because we want to know its 917 // visibility in the virtual canvas being given to the view hierarchy. 918 return r.intersect(0, 0, mWidth, mHeight); 919 } 920 921 public void bringChildToFront(View child) { 922 } 923 924 int getHostVisibility() { 925 return mAppVisible ? mView.getVisibility() : View.GONE; 926 } 927 928 void disposeResizeBuffer() { 929 if (mResizeBuffer != null && mAttachInfo.mHardwareRenderer != null) { 930 mAttachInfo.mHardwareRenderer.safelyRun(new Runnable() { 931 @Override 932 public void run() { 933 mResizeBuffer.destroy(); 934 mResizeBuffer = null; 935 } 936 }); 937 } 938 } 939 940 /** 941 * Add LayoutTransition to the list of transitions to be started in the next traversal. 942 * This list will be cleared after the transitions on the list are start()'ed. These 943 * transitionsa re added by LayoutTransition itself when it sets up animations. The setup 944 * happens during the layout phase of traversal, which we want to complete before any of the 945 * animations are started (because those animations may side-effect properties that layout 946 * depends upon, like the bounding rectangles of the affected views). So we add the transition 947 * to the list and it is started just prior to starting the drawing phase of traversal. 948 * 949 * @param transition The LayoutTransition to be started on the next traversal. 950 * 951 * @hide 952 */ 953 public void requestTransitionStart(LayoutTransition transition) { 954 if (mPendingTransitions == null || !mPendingTransitions.contains(transition)) { 955 if (mPendingTransitions == null) { 956 mPendingTransitions = new ArrayList<LayoutTransition>(); 957 } 958 mPendingTransitions.add(transition); 959 } 960 } 961 962 void scheduleTraversals() { 963 if (!mTraversalScheduled) { 964 mTraversalScheduled = true; 965 mTraversalBarrier = mHandler.getLooper().postSyncBarrier(); 966 mChoreographer.postCallback( 967 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 968 scheduleConsumeBatchedInput(); 969 } 970 } 971 972 void unscheduleTraversals() { 973 if (mTraversalScheduled) { 974 mTraversalScheduled = false; 975 mHandler.getLooper().removeSyncBarrier(mTraversalBarrier); 976 mChoreographer.removeCallbacks( 977 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 978 } 979 } 980 981 void doTraversal() { 982 if (mTraversalScheduled) { 983 mTraversalScheduled = false; 984 mHandler.getLooper().removeSyncBarrier(mTraversalBarrier); 985 986 if (mProfile) { 987 Debug.startMethodTracing("ViewAncestor"); 988 } 989 990 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "performTraversals"); 991 try { 992 performTraversals(); 993 } finally { 994 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 995 } 996 997 if (mProfile) { 998 Debug.stopMethodTracing(); 999 mProfile = false; 1000 } 1001 } 1002 } 1003 1004 private void applyKeepScreenOnFlag(WindowManager.LayoutParams params) { 1005 // Update window's global keep screen on flag: if a view has requested 1006 // that the screen be kept on, then it is always set; otherwise, it is 1007 // set to whatever the client last requested for the global state. 1008 if (mAttachInfo.mKeepScreenOn) { 1009 params.flags |= WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON; 1010 } else { 1011 params.flags = (params.flags&~WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON) 1012 | (mClientWindowLayoutFlags&WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 1013 } 1014 } 1015 1016 private boolean collectViewAttributes() { 1017 final View.AttachInfo attachInfo = mAttachInfo; 1018 if (attachInfo.mRecomputeGlobalAttributes) { 1019 //Log.i(TAG, "Computing view hierarchy attributes!"); 1020 attachInfo.mRecomputeGlobalAttributes = false; 1021 boolean oldScreenOn = attachInfo.mKeepScreenOn; 1022 attachInfo.mKeepScreenOn = false; 1023 attachInfo.mSystemUiVisibility = 0; 1024 attachInfo.mHasSystemUiListeners = false; 1025 mView.dispatchCollectViewAttributes(attachInfo, 0); 1026 attachInfo.mSystemUiVisibility &= ~attachInfo.mDisabledSystemUiVisibility; 1027 WindowManager.LayoutParams params = mWindowAttributes; 1028 if (attachInfo.mKeepScreenOn != oldScreenOn 1029 || attachInfo.mSystemUiVisibility != params.subtreeSystemUiVisibility 1030 || attachInfo.mHasSystemUiListeners != params.hasSystemUiListeners) { 1031 applyKeepScreenOnFlag(params); 1032 params.subtreeSystemUiVisibility = attachInfo.mSystemUiVisibility; 1033 params.hasSystemUiListeners = attachInfo.mHasSystemUiListeners; 1034 mView.dispatchWindowSystemUiVisiblityChanged(attachInfo.mSystemUiVisibility); 1035 return true; 1036 } 1037 } 1038 return false; 1039 } 1040 1041 private boolean measureHierarchy(final View host, final WindowManager.LayoutParams lp, 1042 final Resources res, final int desiredWindowWidth, final int desiredWindowHeight) { 1043 int childWidthMeasureSpec; 1044 int childHeightMeasureSpec; 1045 boolean windowSizeMayChange = false; 1046 1047 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) Log.v(TAG, 1048 "Measuring " + host + " in display " + desiredWindowWidth 1049 + "x" + desiredWindowHeight + "..."); 1050 1051 boolean goodMeasure = false; 1052 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT) { 1053 // On large screens, we don't want to allow dialogs to just 1054 // stretch to fill the entire width of the screen to display 1055 // one line of text. First try doing the layout at a smaller 1056 // size to see if it will fit. 1057 final DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1058 res.getValue(com.android.internal.R.dimen.config_prefDialogWidth, mTmpValue, true); 1059 int baseSize = 0; 1060 if (mTmpValue.type == TypedValue.TYPE_DIMENSION) { 1061 baseSize = (int)mTmpValue.getDimension(packageMetrics); 1062 } 1063 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": baseSize=" + baseSize); 1064 if (baseSize != 0 && desiredWindowWidth > baseSize) { 1065 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1066 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1067 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1068 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": measured (" 1069 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1070 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1071 goodMeasure = true; 1072 } else { 1073 // Didn't fit in that size... try expanding a bit. 1074 baseSize = (baseSize+desiredWindowWidth)/2; 1075 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": next baseSize=" 1076 + baseSize); 1077 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1078 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1079 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": measured (" 1080 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1081 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1082 if (DEBUG_DIALOG) Log.v(TAG, "Good!"); 1083 goodMeasure = true; 1084 } 1085 } 1086 } 1087 } 1088 1089 if (!goodMeasure) { 1090 childWidthMeasureSpec = getRootMeasureSpec(desiredWindowWidth, lp.width); 1091 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1092 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1093 if (mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) { 1094 windowSizeMayChange = true; 1095 } 1096 } 1097 1098 if (DBG) { 1099 System.out.println("======================================"); 1100 System.out.println("performTraversals -- after measure"); 1101 host.debug(); 1102 } 1103 1104 return windowSizeMayChange; 1105 } 1106 1107 private void performTraversals() { 1108 // cache mView since it is used so much below... 1109 final View host = mView; 1110 1111 if (DBG) { 1112 System.out.println("======================================"); 1113 System.out.println("performTraversals"); 1114 host.debug(); 1115 } 1116 1117 if (host == null || !mAdded) 1118 return; 1119 1120 mIsInTraversal = true; 1121 mWillDrawSoon = true; 1122 boolean windowSizeMayChange = false; 1123 boolean newSurface = false; 1124 boolean surfaceChanged = false; 1125 WindowManager.LayoutParams lp = mWindowAttributes; 1126 1127 int desiredWindowWidth; 1128 int desiredWindowHeight; 1129 1130 final View.AttachInfo attachInfo = mAttachInfo; 1131 1132 final int viewVisibility = getHostVisibility(); 1133 boolean viewVisibilityChanged = mViewVisibility != viewVisibility 1134 || mNewSurfaceNeeded; 1135 1136 WindowManager.LayoutParams params = null; 1137 if (mWindowAttributesChanged) { 1138 mWindowAttributesChanged = false; 1139 surfaceChanged = true; 1140 params = lp; 1141 } 1142 CompatibilityInfo compatibilityInfo = mDisplayAdjustments.getCompatibilityInfo(); 1143 if (compatibilityInfo.supportsScreen() == mLastInCompatMode) { 1144 params = lp; 1145 mFullRedrawNeeded = true; 1146 mLayoutRequested = true; 1147 if (mLastInCompatMode) { 1148 params.flags &= ~WindowManager.LayoutParams.FLAG_COMPATIBLE_WINDOW; 1149 mLastInCompatMode = false; 1150 } else { 1151 params.flags |= WindowManager.LayoutParams.FLAG_COMPATIBLE_WINDOW; 1152 mLastInCompatMode = true; 1153 } 1154 } 1155 1156 mWindowAttributesChangesFlag = 0; 1157 1158 Rect frame = mWinFrame; 1159 if (mFirst) { 1160 mFullRedrawNeeded = true; 1161 mLayoutRequested = true; 1162 1163 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL) { 1164 // NOTE -- system code, won't try to do compat mode. 1165 Point size = new Point(); 1166 mDisplay.getRealSize(size); 1167 desiredWindowWidth = size.x; 1168 desiredWindowHeight = size.y; 1169 } else { 1170 DisplayMetrics packageMetrics = 1171 mView.getContext().getResources().getDisplayMetrics(); 1172 desiredWindowWidth = packageMetrics.widthPixels; 1173 desiredWindowHeight = packageMetrics.heightPixels; 1174 } 1175 1176 // For the very first time, tell the view hierarchy that it 1177 // is attached to the window. Note that at this point the surface 1178 // object is not initialized to its backing store, but soon it 1179 // will be (assuming the window is visible). 1180 attachInfo.mSurface = mSurface; 1181 // We used to use the following condition to choose 32 bits drawing caches: 1182 // PixelFormat.hasAlpha(lp.format) || lp.format == PixelFormat.RGBX_8888 1183 // However, windows are now always 32 bits by default, so choose 32 bits 1184 attachInfo.mUse32BitDrawingCache = true; 1185 attachInfo.mHasWindowFocus = false; 1186 attachInfo.mWindowVisibility = viewVisibility; 1187 attachInfo.mRecomputeGlobalAttributes = false; 1188 viewVisibilityChanged = false; 1189 mLastConfiguration.setTo(host.getResources().getConfiguration()); 1190 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1191 // Set the layout direction if it has not been set before (inherit is the default) 1192 if (mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 1193 host.setLayoutDirection(mLastConfiguration.getLayoutDirection()); 1194 } 1195 host.dispatchAttachedToWindow(attachInfo, 0); 1196 attachInfo.mTreeObserver.dispatchOnWindowAttachedChange(true); 1197 mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets); 1198 host.fitSystemWindows(mFitSystemWindowsInsets); 1199 //Log.i(TAG, "Screen on initialized: " + attachInfo.mKeepScreenOn); 1200 1201 } else { 1202 desiredWindowWidth = frame.width(); 1203 desiredWindowHeight = frame.height(); 1204 if (desiredWindowWidth != mWidth || desiredWindowHeight != mHeight) { 1205 if (DEBUG_ORIENTATION) Log.v(TAG, 1206 "View " + host + " resized to: " + frame); 1207 mFullRedrawNeeded = true; 1208 mLayoutRequested = true; 1209 windowSizeMayChange = true; 1210 } 1211 } 1212 1213 if (viewVisibilityChanged) { 1214 attachInfo.mWindowVisibility = viewVisibility; 1215 host.dispatchWindowVisibilityChanged(viewVisibility); 1216 if (viewVisibility != View.VISIBLE || mNewSurfaceNeeded) { 1217 destroyHardwareResources(); 1218 } 1219 if (viewVisibility == View.GONE) { 1220 // After making a window gone, we will count it as being 1221 // shown for the first time the next time it gets focus. 1222 mHasHadWindowFocus = false; 1223 } 1224 } 1225 1226 // Execute enqueued actions on every traversal in case a detached view enqueued an action 1227 getRunQueue().executeActions(attachInfo.mHandler); 1228 1229 boolean insetsChanged = false; 1230 1231 boolean layoutRequested = mLayoutRequested && !mStopped; 1232 if (layoutRequested) { 1233 1234 final Resources res = mView.getContext().getResources(); 1235 1236 if (mFirst) { 1237 // make sure touch mode code executes by setting cached value 1238 // to opposite of the added touch mode. 1239 mAttachInfo.mInTouchMode = !mAddedTouchMode; 1240 ensureTouchModeLocally(mAddedTouchMode); 1241 } else { 1242 if (!mPendingOverscanInsets.equals(mAttachInfo.mOverscanInsets)) { 1243 insetsChanged = true; 1244 } 1245 if (!mPendingContentInsets.equals(mAttachInfo.mContentInsets)) { 1246 insetsChanged = true; 1247 } 1248 if (!mPendingVisibleInsets.equals(mAttachInfo.mVisibleInsets)) { 1249 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1250 if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: " 1251 + mAttachInfo.mVisibleInsets); 1252 } 1253 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT 1254 || lp.height == ViewGroup.LayoutParams.WRAP_CONTENT) { 1255 windowSizeMayChange = true; 1256 1257 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL) { 1258 // NOTE -- system code, won't try to do compat mode. 1259 Point size = new Point(); 1260 mDisplay.getRealSize(size); 1261 desiredWindowWidth = size.x; 1262 desiredWindowHeight = size.y; 1263 } else { 1264 DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1265 desiredWindowWidth = packageMetrics.widthPixels; 1266 desiredWindowHeight = packageMetrics.heightPixels; 1267 } 1268 } 1269 } 1270 1271 // Ask host how big it wants to be 1272 windowSizeMayChange |= measureHierarchy(host, lp, res, 1273 desiredWindowWidth, desiredWindowHeight); 1274 } 1275 1276 if (collectViewAttributes()) { 1277 params = lp; 1278 } 1279 if (attachInfo.mForceReportNewAttributes) { 1280 attachInfo.mForceReportNewAttributes = false; 1281 params = lp; 1282 } 1283 1284 if (mFirst || attachInfo.mViewVisibilityChanged) { 1285 attachInfo.mViewVisibilityChanged = false; 1286 int resizeMode = mSoftInputMode & 1287 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST; 1288 // If we are in auto resize mode, then we need to determine 1289 // what mode to use now. 1290 if (resizeMode == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 1291 final int N = attachInfo.mScrollContainers.size(); 1292 for (int i=0; i<N; i++) { 1293 if (attachInfo.mScrollContainers.get(i).isShown()) { 1294 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE; 1295 } 1296 } 1297 if (resizeMode == 0) { 1298 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_PAN; 1299 } 1300 if ((lp.softInputMode & 1301 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) != resizeMode) { 1302 lp.softInputMode = (lp.softInputMode & 1303 ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) | 1304 resizeMode; 1305 params = lp; 1306 } 1307 } 1308 } 1309 1310 if (params != null) { 1311 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 1312 if (!PixelFormat.formatHasAlpha(params.format)) { 1313 params.format = PixelFormat.TRANSLUCENT; 1314 } 1315 } 1316 mAttachInfo.mOverscanRequested = (params.flags 1317 & WindowManager.LayoutParams.FLAG_LAYOUT_IN_OVERSCAN) != 0; 1318 } 1319 1320 if (mFitSystemWindowsRequested) { 1321 mFitSystemWindowsRequested = false; 1322 mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets); 1323 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1324 host.fitSystemWindows(mFitSystemWindowsInsets); 1325 if (mLayoutRequested) { 1326 // Short-circuit catching a new layout request here, so 1327 // we don't need to go through two layout passes when things 1328 // change due to fitting system windows, which can happen a lot. 1329 windowSizeMayChange |= measureHierarchy(host, lp, 1330 mView.getContext().getResources(), 1331 desiredWindowWidth, desiredWindowHeight); 1332 } 1333 } 1334 1335 if (layoutRequested) { 1336 // Clear this now, so that if anything requests a layout in the 1337 // rest of this function we will catch it and re-run a full 1338 // layout pass. 1339 mLayoutRequested = false; 1340 } 1341 1342 boolean windowShouldResize = layoutRequested && windowSizeMayChange 1343 && ((mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) 1344 || (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT && 1345 frame.width() < desiredWindowWidth && frame.width() != mWidth) 1346 || (lp.height == ViewGroup.LayoutParams.WRAP_CONTENT && 1347 frame.height() < desiredWindowHeight && frame.height() != mHeight)); 1348 1349 final boolean computesInternalInsets = 1350 attachInfo.mTreeObserver.hasComputeInternalInsetsListeners(); 1351 1352 boolean insetsPending = false; 1353 int relayoutResult = 0; 1354 1355 if (mFirst || windowShouldResize || insetsChanged || 1356 viewVisibilityChanged || params != null) { 1357 1358 if (viewVisibility == View.VISIBLE) { 1359 // If this window is giving internal insets to the window 1360 // manager, and it is being added or changing its visibility, 1361 // then we want to first give the window manager "fake" 1362 // insets to cause it to effectively ignore the content of 1363 // the window during layout. This avoids it briefly causing 1364 // other windows to resize/move based on the raw frame of the 1365 // window, waiting until we can finish laying out this window 1366 // and get back to the window manager with the ultimately 1367 // computed insets. 1368 insetsPending = computesInternalInsets && (mFirst || viewVisibilityChanged); 1369 } 1370 1371 if (mSurfaceHolder != null) { 1372 mSurfaceHolder.mSurfaceLock.lock(); 1373 mDrawingAllowed = true; 1374 } 1375 1376 boolean hwInitialized = false; 1377 boolean contentInsetsChanged = false; 1378 boolean hadSurface = mSurface.isValid(); 1379 1380 try { 1381 if (DEBUG_LAYOUT) { 1382 Log.i(TAG, "host=w:" + host.getMeasuredWidth() + ", h:" + 1383 host.getMeasuredHeight() + ", params=" + params); 1384 } 1385 1386 final int surfaceGenerationId = mSurface.getGenerationId(); 1387 relayoutResult = relayoutWindow(params, viewVisibility, insetsPending); 1388 if (!mDrawDuringWindowsAnimating) { 1389 mWindowsAnimating |= 1390 (relayoutResult & WindowManagerGlobal.RELAYOUT_RES_ANIMATING) != 0; 1391 } 1392 1393 if (DEBUG_LAYOUT) Log.v(TAG, "relayout: frame=" + frame.toShortString() 1394 + " overscan=" + mPendingOverscanInsets.toShortString() 1395 + " content=" + mPendingContentInsets.toShortString() 1396 + " visible=" + mPendingVisibleInsets.toShortString() 1397 + " surface=" + mSurface); 1398 1399 if (mPendingConfiguration.seq != 0) { 1400 if (DEBUG_CONFIGURATION) Log.v(TAG, "Visible with new config: " 1401 + mPendingConfiguration); 1402 updateConfiguration(mPendingConfiguration, !mFirst); 1403 mPendingConfiguration.seq = 0; 1404 } 1405 1406 final boolean overscanInsetsChanged = !mPendingOverscanInsets.equals( 1407 mAttachInfo.mOverscanInsets); 1408 contentInsetsChanged = !mPendingContentInsets.equals( 1409 mAttachInfo.mContentInsets); 1410 final boolean visibleInsetsChanged = !mPendingVisibleInsets.equals( 1411 mAttachInfo.mVisibleInsets); 1412 if (contentInsetsChanged) { 1413 if (mWidth > 0 && mHeight > 0 && lp != null && 1414 ((lp.systemUiVisibility|lp.subtreeSystemUiVisibility) 1415 & View.SYSTEM_UI_LAYOUT_FLAGS) == 0 && 1416 mSurface != null && mSurface.isValid() && 1417 !mAttachInfo.mTurnOffWindowResizeAnim && 1418 mAttachInfo.mHardwareRenderer != null && 1419 mAttachInfo.mHardwareRenderer.isEnabled() && 1420 mAttachInfo.mHardwareRenderer.validate() && 1421 lp != null && !PixelFormat.formatHasAlpha(lp.format)) { 1422 1423 disposeResizeBuffer(); 1424 1425 boolean completed = false; 1426 HardwareCanvas hwRendererCanvas = mAttachInfo.mHardwareRenderer.getCanvas(); 1427 HardwareCanvas layerCanvas = null; 1428 try { 1429 if (mResizeBuffer == null) { 1430 mResizeBuffer = mAttachInfo.mHardwareRenderer.createHardwareLayer( 1431 mWidth, mHeight, false); 1432 } else if (mResizeBuffer.getWidth() != mWidth || 1433 mResizeBuffer.getHeight() != mHeight) { 1434 mResizeBuffer.resize(mWidth, mHeight); 1435 } 1436 // TODO: should handle create/resize failure 1437 layerCanvas = mResizeBuffer.start(hwRendererCanvas); 1438 final int restoreCount = layerCanvas.save(); 1439 1440 int yoff; 1441 final boolean scrolling = mScroller != null 1442 && mScroller.computeScrollOffset(); 1443 if (scrolling) { 1444 yoff = mScroller.getCurrY(); 1445 mScroller.abortAnimation(); 1446 } else { 1447 yoff = mScrollY; 1448 } 1449 1450 layerCanvas.translate(0, -yoff); 1451 if (mTranslator != null) { 1452 mTranslator.translateCanvas(layerCanvas); 1453 } 1454 1455 DisplayList displayList = mView.mDisplayList; 1456 if (displayList != null && displayList.isValid()) { 1457 layerCanvas.drawDisplayList(displayList, null, 1458 DisplayList.FLAG_CLIP_CHILDREN); 1459 } else { 1460 mView.draw(layerCanvas); 1461 } 1462 1463 drawAccessibilityFocusedDrawableIfNeeded(layerCanvas); 1464 1465 mResizeBufferStartTime = SystemClock.uptimeMillis(); 1466 mResizeBufferDuration = mView.getResources().getInteger( 1467 com.android.internal.R.integer.config_mediumAnimTime); 1468 completed = true; 1469 1470 layerCanvas.restoreToCount(restoreCount); 1471 } catch (OutOfMemoryError e) { 1472 Log.w(TAG, "Not enough memory for content change anim buffer", e); 1473 } finally { 1474 if (mResizeBuffer != null) { 1475 mResizeBuffer.end(hwRendererCanvas); 1476 if (!completed) { 1477 disposeResizeBuffer(); 1478 } 1479 } 1480 } 1481 } 1482 mAttachInfo.mContentInsets.set(mPendingContentInsets); 1483 if (DEBUG_LAYOUT) Log.v(TAG, "Content insets changing to: " 1484 + mAttachInfo.mContentInsets); 1485 } 1486 if (overscanInsetsChanged) { 1487 mAttachInfo.mOverscanInsets.set(mPendingOverscanInsets); 1488 if (DEBUG_LAYOUT) Log.v(TAG, "Overscan insets changing to: " 1489 + mAttachInfo.mOverscanInsets); 1490 // Need to relayout with content insets. 1491 contentInsetsChanged = true; 1492 } 1493 if (contentInsetsChanged || mLastSystemUiVisibility != 1494 mAttachInfo.mSystemUiVisibility || mFitSystemWindowsRequested 1495 || mLastOverscanRequested != mAttachInfo.mOverscanRequested) { 1496 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1497 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1498 mFitSystemWindowsRequested = false; 1499 mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets); 1500 host.fitSystemWindows(mFitSystemWindowsInsets); 1501 } 1502 if (visibleInsetsChanged) { 1503 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1504 if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: " 1505 + mAttachInfo.mVisibleInsets); 1506 } 1507 1508 if (!hadSurface) { 1509 if (mSurface.isValid()) { 1510 // If we are creating a new surface, then we need to 1511 // completely redraw it. Also, when we get to the 1512 // point of drawing it we will hold off and schedule 1513 // a new traversal instead. This is so we can tell the 1514 // window manager about all of the windows being displayed 1515 // before actually drawing them, so it can display then 1516 // all at once. 1517 newSurface = true; 1518 mFullRedrawNeeded = true; 1519 mPreviousTransparentRegion.setEmpty(); 1520 1521 if (mAttachInfo.mHardwareRenderer != null) { 1522 try { 1523 hwInitialized = mAttachInfo.mHardwareRenderer.initialize( 1524 mHolder.getSurface()); 1525 } catch (Surface.OutOfResourcesException e) { 1526 handleOutOfResourcesException(e); 1527 return; 1528 } 1529 } 1530 } 1531 } else if (!mSurface.isValid()) { 1532 // If the surface has been removed, then reset the scroll 1533 // positions. 1534 if (mLastScrolledFocus != null) { 1535 mLastScrolledFocus.clear(); 1536 } 1537 mScrollY = mCurScrollY = 0; 1538 if (mScroller != null) { 1539 mScroller.abortAnimation(); 1540 } 1541 disposeResizeBuffer(); 1542 // Our surface is gone 1543 if (mAttachInfo.mHardwareRenderer != null && 1544 mAttachInfo.mHardwareRenderer.isEnabled()) { 1545 mAttachInfo.mHardwareRenderer.destroy(true); 1546 } 1547 } else if (surfaceGenerationId != mSurface.getGenerationId() && 1548 mSurfaceHolder == null && mAttachInfo.mHardwareRenderer != null) { 1549 mFullRedrawNeeded = true; 1550 try { 1551 mAttachInfo.mHardwareRenderer.updateSurface(mHolder.getSurface()); 1552 } catch (Surface.OutOfResourcesException e) { 1553 handleOutOfResourcesException(e); 1554 return; 1555 } 1556 } 1557 } catch (RemoteException e) { 1558 } 1559 1560 if (DEBUG_ORIENTATION) Log.v( 1561 TAG, "Relayout returned: frame=" + frame + ", surface=" + mSurface); 1562 1563 attachInfo.mWindowLeft = frame.left; 1564 attachInfo.mWindowTop = frame.top; 1565 1566 // !!FIXME!! This next section handles the case where we did not get the 1567 // window size we asked for. We should avoid this by getting a maximum size from 1568 // the window session beforehand. 1569 if (mWidth != frame.width() || mHeight != frame.height()) { 1570 mWidth = frame.width(); 1571 mHeight = frame.height(); 1572 } 1573 1574 if (mSurfaceHolder != null) { 1575 // The app owns the surface; tell it about what is going on. 1576 if (mSurface.isValid()) { 1577 // XXX .copyFrom() doesn't work! 1578 //mSurfaceHolder.mSurface.copyFrom(mSurface); 1579 mSurfaceHolder.mSurface = mSurface; 1580 } 1581 mSurfaceHolder.setSurfaceFrameSize(mWidth, mHeight); 1582 mSurfaceHolder.mSurfaceLock.unlock(); 1583 if (mSurface.isValid()) { 1584 if (!hadSurface) { 1585 mSurfaceHolder.ungetCallbacks(); 1586 1587 mIsCreating = true; 1588 mSurfaceHolderCallback.surfaceCreated(mSurfaceHolder); 1589 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1590 if (callbacks != null) { 1591 for (SurfaceHolder.Callback c : callbacks) { 1592 c.surfaceCreated(mSurfaceHolder); 1593 } 1594 } 1595 surfaceChanged = true; 1596 } 1597 if (surfaceChanged) { 1598 mSurfaceHolderCallback.surfaceChanged(mSurfaceHolder, 1599 lp.format, mWidth, mHeight); 1600 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1601 if (callbacks != null) { 1602 for (SurfaceHolder.Callback c : callbacks) { 1603 c.surfaceChanged(mSurfaceHolder, lp.format, 1604 mWidth, mHeight); 1605 } 1606 } 1607 } 1608 mIsCreating = false; 1609 } else if (hadSurface) { 1610 mSurfaceHolder.ungetCallbacks(); 1611 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1612 mSurfaceHolderCallback.surfaceDestroyed(mSurfaceHolder); 1613 if (callbacks != null) { 1614 for (SurfaceHolder.Callback c : callbacks) { 1615 c.surfaceDestroyed(mSurfaceHolder); 1616 } 1617 } 1618 mSurfaceHolder.mSurfaceLock.lock(); 1619 try { 1620 mSurfaceHolder.mSurface = new Surface(); 1621 } finally { 1622 mSurfaceHolder.mSurfaceLock.unlock(); 1623 } 1624 } 1625 } 1626 1627 if (mAttachInfo.mHardwareRenderer != null && 1628 mAttachInfo.mHardwareRenderer.isEnabled()) { 1629 if (hwInitialized || 1630 mWidth != mAttachInfo.mHardwareRenderer.getWidth() || 1631 mHeight != mAttachInfo.mHardwareRenderer.getHeight()) { 1632 mAttachInfo.mHardwareRenderer.setup(mWidth, mHeight); 1633 if (!hwInitialized) { 1634 mAttachInfo.mHardwareRenderer.invalidate(mHolder.getSurface()); 1635 mFullRedrawNeeded = true; 1636 } 1637 } 1638 } 1639 1640 if (!mStopped) { 1641 boolean focusChangedDueToTouchMode = ensureTouchModeLocally( 1642 (relayoutResult&WindowManagerGlobal.RELAYOUT_RES_IN_TOUCH_MODE) != 0); 1643 if (focusChangedDueToTouchMode || mWidth != host.getMeasuredWidth() 1644 || mHeight != host.getMeasuredHeight() || contentInsetsChanged) { 1645 int childWidthMeasureSpec = getRootMeasureSpec(mWidth, lp.width); 1646 int childHeightMeasureSpec = getRootMeasureSpec(mHeight, lp.height); 1647 1648 if (DEBUG_LAYOUT) Log.v(TAG, "Ooops, something changed! mWidth=" 1649 + mWidth + " measuredWidth=" + host.getMeasuredWidth() 1650 + " mHeight=" + mHeight 1651 + " measuredHeight=" + host.getMeasuredHeight() 1652 + " coveredInsetsChanged=" + contentInsetsChanged); 1653 1654 // Ask host how big it wants to be 1655 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1656 1657 // Implementation of weights from WindowManager.LayoutParams 1658 // We just grow the dimensions as needed and re-measure if 1659 // needs be 1660 int width = host.getMeasuredWidth(); 1661 int height = host.getMeasuredHeight(); 1662 boolean measureAgain = false; 1663 1664 if (lp.horizontalWeight > 0.0f) { 1665 width += (int) ((mWidth - width) * lp.horizontalWeight); 1666 childWidthMeasureSpec = MeasureSpec.makeMeasureSpec(width, 1667 MeasureSpec.EXACTLY); 1668 measureAgain = true; 1669 } 1670 if (lp.verticalWeight > 0.0f) { 1671 height += (int) ((mHeight - height) * lp.verticalWeight); 1672 childHeightMeasureSpec = MeasureSpec.makeMeasureSpec(height, 1673 MeasureSpec.EXACTLY); 1674 measureAgain = true; 1675 } 1676 1677 if (measureAgain) { 1678 if (DEBUG_LAYOUT) Log.v(TAG, 1679 "And hey let's measure once more: width=" + width 1680 + " height=" + height); 1681 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1682 } 1683 1684 layoutRequested = true; 1685 } 1686 } 1687 } else { 1688 // Not the first pass and no window/insets/visibility change but the window 1689 // may have moved and we need check that and if so to update the left and right 1690 // in the attach info. We translate only the window frame since on window move 1691 // the window manager tells us only for the new frame but the insets are the 1692 // same and we do not want to translate them more than once. 1693 1694 // TODO: Well, we are checking whether the frame has changed similarly 1695 // to how this is done for the insets. This is however incorrect since 1696 // the insets and the frame are translated. For example, the old frame 1697 // was (1, 1 - 1, 1) and was translated to say (2, 2 - 2, 2), now the new 1698 // reported frame is (2, 2 - 2, 2) which implies no change but this is not 1699 // true since we are comparing a not translated value to a translated one. 1700 // This scenario is rare but we may want to fix that. 1701 1702 final boolean windowMoved = (attachInfo.mWindowLeft != frame.left 1703 || attachInfo.mWindowTop != frame.top); 1704 if (windowMoved) { 1705 if (mTranslator != null) { 1706 mTranslator.translateRectInScreenToAppWinFrame(frame); 1707 } 1708 attachInfo.mWindowLeft = frame.left; 1709 attachInfo.mWindowTop = frame.top; 1710 } 1711 } 1712 1713 final boolean didLayout = layoutRequested && !mStopped; 1714 boolean triggerGlobalLayoutListener = didLayout 1715 || attachInfo.mRecomputeGlobalAttributes; 1716 if (didLayout) { 1717 performLayout(lp, desiredWindowWidth, desiredWindowHeight); 1718 1719 // By this point all views have been sized and positioned 1720 // We can compute the transparent area 1721 1722 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 1723 // start out transparent 1724 // TODO: AVOID THAT CALL BY CACHING THE RESULT? 1725 host.getLocationInWindow(mTmpLocation); 1726 mTransparentRegion.set(mTmpLocation[0], mTmpLocation[1], 1727 mTmpLocation[0] + host.mRight - host.mLeft, 1728 mTmpLocation[1] + host.mBottom - host.mTop); 1729 1730 host.gatherTransparentRegion(mTransparentRegion); 1731 if (mTranslator != null) { 1732 mTranslator.translateRegionInWindowToScreen(mTransparentRegion); 1733 } 1734 1735 if (!mTransparentRegion.equals(mPreviousTransparentRegion)) { 1736 mPreviousTransparentRegion.set(mTransparentRegion); 1737 mFullRedrawNeeded = true; 1738 // reconfigure window manager 1739 try { 1740 mWindowSession.setTransparentRegion(mWindow, mTransparentRegion); 1741 } catch (RemoteException e) { 1742 } 1743 } 1744 } 1745 1746 if (DBG) { 1747 System.out.println("======================================"); 1748 System.out.println("performTraversals -- after setFrame"); 1749 host.debug(); 1750 } 1751 } 1752 1753 if (triggerGlobalLayoutListener) { 1754 attachInfo.mRecomputeGlobalAttributes = false; 1755 attachInfo.mTreeObserver.dispatchOnGlobalLayout(); 1756 } 1757 1758 if (computesInternalInsets) { 1759 // Clear the original insets. 1760 final ViewTreeObserver.InternalInsetsInfo insets = attachInfo.mGivenInternalInsets; 1761 insets.reset(); 1762 1763 // Compute new insets in place. 1764 attachInfo.mTreeObserver.dispatchOnComputeInternalInsets(insets); 1765 1766 // Tell the window manager. 1767 if (insetsPending || !mLastGivenInsets.equals(insets)) { 1768 mLastGivenInsets.set(insets); 1769 1770 // Translate insets to screen coordinates if needed. 1771 final Rect contentInsets; 1772 final Rect visibleInsets; 1773 final Region touchableRegion; 1774 if (mTranslator != null) { 1775 contentInsets = mTranslator.getTranslatedContentInsets(insets.contentInsets); 1776 visibleInsets = mTranslator.getTranslatedVisibleInsets(insets.visibleInsets); 1777 touchableRegion = mTranslator.getTranslatedTouchableArea(insets.touchableRegion); 1778 } else { 1779 contentInsets = insets.contentInsets; 1780 visibleInsets = insets.visibleInsets; 1781 touchableRegion = insets.touchableRegion; 1782 } 1783 1784 try { 1785 mWindowSession.setInsets(mWindow, insets.mTouchableInsets, 1786 contentInsets, visibleInsets, touchableRegion); 1787 } catch (RemoteException e) { 1788 } 1789 } 1790 } 1791 1792 boolean skipDraw = false; 1793 1794 if (mFirst) { 1795 // handle first focus request 1796 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: mView.hasFocus()=" 1797 + mView.hasFocus()); 1798 if (mView != null) { 1799 if (!mView.hasFocus()) { 1800 mView.requestFocus(View.FOCUS_FORWARD); 1801 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: requested focused view=" 1802 + mView.findFocus()); 1803 } else { 1804 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: existing focused view=" 1805 + mView.findFocus()); 1806 } 1807 } 1808 if ((relayoutResult & WindowManagerGlobal.RELAYOUT_RES_ANIMATING) != 0) { 1809 // The first time we relayout the window, if the system is 1810 // doing window animations, we want to hold of on any future 1811 // draws until the animation is done. 1812 mWindowsAnimating = true; 1813 } 1814 } else if (mWindowsAnimating) { 1815 skipDraw = true; 1816 } 1817 1818 mFirst = false; 1819 mWillDrawSoon = false; 1820 mNewSurfaceNeeded = false; 1821 mViewVisibility = viewVisibility; 1822 1823 if (mAttachInfo.mHasWindowFocus && !isInLocalFocusMode()) { 1824 final boolean imTarget = WindowManager.LayoutParams 1825 .mayUseInputMethod(mWindowAttributes.flags); 1826 if (imTarget != mLastWasImTarget) { 1827 mLastWasImTarget = imTarget; 1828 InputMethodManager imm = InputMethodManager.peekInstance(); 1829 if (imm != null && imTarget) { 1830 imm.startGettingWindowFocus(mView); 1831 imm.onWindowFocus(mView, mView.findFocus(), 1832 mWindowAttributes.softInputMode, 1833 !mHasHadWindowFocus, mWindowAttributes.flags); 1834 } 1835 } 1836 } 1837 1838 // Remember if we must report the next draw. 1839 if ((relayoutResult & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 1840 mReportNextDraw = true; 1841 } 1842 1843 boolean cancelDraw = attachInfo.mTreeObserver.dispatchOnPreDraw() || 1844 viewVisibility != View.VISIBLE; 1845 1846 if (!cancelDraw && !newSurface) { 1847 if (!skipDraw || mReportNextDraw) { 1848 if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 1849 for (int i = 0; i < mPendingTransitions.size(); ++i) { 1850 mPendingTransitions.get(i).startChangingAnimations(); 1851 } 1852 mPendingTransitions.clear(); 1853 } 1854 1855 performDraw(); 1856 } 1857 } else { 1858 if (viewVisibility == View.VISIBLE) { 1859 // Try again 1860 scheduleTraversals(); 1861 } else if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 1862 for (int i = 0; i < mPendingTransitions.size(); ++i) { 1863 mPendingTransitions.get(i).endChangingAnimations(); 1864 } 1865 mPendingTransitions.clear(); 1866 } 1867 } 1868 1869 mIsInTraversal = false; 1870 } 1871 1872 private void handleOutOfResourcesException(Surface.OutOfResourcesException e) { 1873 Log.e(TAG, "OutOfResourcesException initializing HW surface", e); 1874 try { 1875 if (!mWindowSession.outOfMemory(mWindow) && 1876 Process.myUid() != Process.SYSTEM_UID) { 1877 Slog.w(TAG, "No processes killed for memory; killing self"); 1878 Process.killProcess(Process.myPid()); 1879 } 1880 } catch (RemoteException ex) { 1881 } 1882 mLayoutRequested = true; // ask wm for a new surface next time. 1883 } 1884 1885 private void performMeasure(int childWidthMeasureSpec, int childHeightMeasureSpec) { 1886 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "measure"); 1887 try { 1888 mView.measure(childWidthMeasureSpec, childHeightMeasureSpec); 1889 } finally { 1890 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 1891 } 1892 } 1893 1894 /** 1895 * Called by {@link android.view.View#isInLayout()} to determine whether the view hierarchy 1896 * is currently undergoing a layout pass. 1897 * 1898 * @return whether the view hierarchy is currently undergoing a layout pass 1899 */ 1900 boolean isInLayout() { 1901 return mInLayout; 1902 } 1903 1904 /** 1905 * Called by {@link android.view.View#requestLayout()} if the view hierarchy is currently 1906 * undergoing a layout pass. requestLayout() should not generally be called during layout, 1907 * unless the container hierarchy knows what it is doing (i.e., it is fine as long as 1908 * all children in that container hierarchy are measured and laid out at the end of the layout 1909 * pass for that container). If requestLayout() is called anyway, we handle it correctly 1910 * by registering all requesters during a frame as it proceeds. At the end of the frame, 1911 * we check all of those views to see if any still have pending layout requests, which 1912 * indicates that they were not correctly handled by their container hierarchy. If that is 1913 * the case, we clear all such flags in the tree, to remove the buggy flag state that leads 1914 * to blank containers, and force a second request/measure/layout pass in this frame. If 1915 * more requestLayout() calls are received during that second layout pass, we post those 1916 * requests to the next frame to avoid possible infinite loops. 1917 * 1918 * <p>The return value from this method indicates whether the request should proceed 1919 * (if it is a request during the first layout pass) or should be skipped and posted to the 1920 * next frame (if it is a request during the second layout pass).</p> 1921 * 1922 * @param view the view that requested the layout. 1923 * 1924 * @return true if request should proceed, false otherwise. 1925 */ 1926 boolean requestLayoutDuringLayout(final View view) { 1927 if (view.mParent == null || view.mAttachInfo == null) { 1928 // Would not normally trigger another layout, so just let it pass through as usual 1929 return true; 1930 } 1931 if (!mLayoutRequesters.contains(view)) { 1932 mLayoutRequesters.add(view); 1933 } 1934 if (!mHandlingLayoutInLayoutRequest) { 1935 // Let the request proceed normally; it will be processed in a second layout pass 1936 // if necessary 1937 return true; 1938 } else { 1939 // Don't let the request proceed during the second layout pass. 1940 // It will post to the next frame instead. 1941 return false; 1942 } 1943 } 1944 1945 private void performLayout(WindowManager.LayoutParams lp, int desiredWindowWidth, 1946 int desiredWindowHeight) { 1947 mLayoutRequested = false; 1948 mScrollMayChange = true; 1949 mInLayout = true; 1950 1951 final View host = mView; 1952 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) { 1953 Log.v(TAG, "Laying out " + host + " to (" + 1954 host.getMeasuredWidth() + ", " + host.getMeasuredHeight() + ")"); 1955 } 1956 1957 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "layout"); 1958 try { 1959 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 1960 1961 mInLayout = false; 1962 int numViewsRequestingLayout = mLayoutRequesters.size(); 1963 if (numViewsRequestingLayout > 0) { 1964 // requestLayout() was called during layout. 1965 // If no layout-request flags are set on the requesting views, there is no problem. 1966 // If some requests are still pending, then we need to clear those flags and do 1967 // a full request/measure/layout pass to handle this situation. 1968 ArrayList<View> validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, 1969 false); 1970 if (validLayoutRequesters != null) { 1971 // Set this flag to indicate that any further requests are happening during 1972 // the second pass, which may result in posting those requests to the next 1973 // frame instead 1974 mHandlingLayoutInLayoutRequest = true; 1975 1976 // Process fresh layout requests, then measure and layout 1977 int numValidRequests = validLayoutRequesters.size(); 1978 for (int i = 0; i < numValidRequests; ++i) { 1979 final View view = validLayoutRequesters.get(i); 1980 Log.w("View", "requestLayout() improperly called by " + view + 1981 " during layout: running second layout pass"); 1982 view.requestLayout(); 1983 } 1984 measureHierarchy(host, lp, mView.getContext().getResources(), 1985 desiredWindowWidth, desiredWindowHeight); 1986 mInLayout = true; 1987 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 1988 1989 mHandlingLayoutInLayoutRequest = false; 1990 1991 // Check the valid requests again, this time without checking/clearing the 1992 // layout flags, since requests happening during the second pass get noop'd 1993 validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, true); 1994 if (validLayoutRequesters != null) { 1995 final ArrayList<View> finalRequesters = validLayoutRequesters; 1996 // Post second-pass requests to the next frame 1997 getRunQueue().post(new Runnable() { 1998 @Override 1999 public void run() { 2000 int numValidRequests = finalRequesters.size(); 2001 for (int i = 0; i < numValidRequests; ++i) { 2002 final View view = finalRequesters.get(i); 2003 Log.w("View", "requestLayout() improperly called by " + view + 2004 " during second layout pass: posting in next frame"); 2005 view.requestLayout(); 2006 } 2007 } 2008 }); 2009 } 2010 } 2011 2012 } 2013 } finally { 2014 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2015 } 2016 mInLayout = false; 2017 } 2018 2019 /** 2020 * This method is called during layout when there have been calls to requestLayout() during 2021 * layout. It walks through the list of views that requested layout to determine which ones 2022 * still need it, based on visibility in the hierarchy and whether they have already been 2023 * handled (as is usually the case with ListView children). 2024 * 2025 * @param layoutRequesters The list of views that requested layout during layout 2026 * @param secondLayoutRequests Whether the requests were issued during the second layout pass. 2027 * If so, the FORCE_LAYOUT flag was not set on requesters. 2028 * @return A list of the actual views that still need to be laid out. 2029 */ 2030 private ArrayList<View> getValidLayoutRequesters(ArrayList<View> layoutRequesters, 2031 boolean secondLayoutRequests) { 2032 2033 int numViewsRequestingLayout = layoutRequesters.size(); 2034 ArrayList<View> validLayoutRequesters = null; 2035 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2036 View view = layoutRequesters.get(i); 2037 if (view != null && view.mAttachInfo != null && view.mParent != null && 2038 (secondLayoutRequests || (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) == 2039 View.PFLAG_FORCE_LAYOUT)) { 2040 boolean gone = false; 2041 View parent = view; 2042 // Only trigger new requests for views in a non-GONE hierarchy 2043 while (parent != null) { 2044 if ((parent.mViewFlags & View.VISIBILITY_MASK) == View.GONE) { 2045 gone = true; 2046 break; 2047 } 2048 if (parent.mParent instanceof View) { 2049 parent = (View) parent.mParent; 2050 } else { 2051 parent = null; 2052 } 2053 } 2054 if (!gone) { 2055 if (validLayoutRequesters == null) { 2056 validLayoutRequesters = new ArrayList<View>(); 2057 } 2058 validLayoutRequesters.add(view); 2059 } 2060 } 2061 } 2062 if (!secondLayoutRequests) { 2063 // If we're checking the layout flags, then we need to clean them up also 2064 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2065 View view = layoutRequesters.get(i); 2066 while (view != null && 2067 (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) != 0) { 2068 view.mPrivateFlags &= ~View.PFLAG_FORCE_LAYOUT; 2069 if (view.mParent instanceof View) { 2070 view = (View) view.mParent; 2071 } else { 2072 view = null; 2073 } 2074 } 2075 } 2076 } 2077 layoutRequesters.clear(); 2078 return validLayoutRequesters; 2079 } 2080 2081 public void requestTransparentRegion(View child) { 2082 // the test below should not fail unless someone is messing with us 2083 checkThread(); 2084 if (mView == child) { 2085 mView.mPrivateFlags |= View.PFLAG_REQUEST_TRANSPARENT_REGIONS; 2086 // Need to make sure we re-evaluate the window attributes next 2087 // time around, to ensure the window has the correct format. 2088 mWindowAttributesChanged = true; 2089 mWindowAttributesChangesFlag = 0; 2090 requestLayout(); 2091 } 2092 } 2093 2094 /** 2095 * Figures out the measure spec for the root view in a window based on it's 2096 * layout params. 2097 * 2098 * @param windowSize 2099 * The available width or height of the window 2100 * 2101 * @param rootDimension 2102 * The layout params for one dimension (width or height) of the 2103 * window. 2104 * 2105 * @return The measure spec to use to measure the root view. 2106 */ 2107 private static int getRootMeasureSpec(int windowSize, int rootDimension) { 2108 int measureSpec; 2109 switch (rootDimension) { 2110 2111 case ViewGroup.LayoutParams.MATCH_PARENT: 2112 // Window can't resize. Force root view to be windowSize. 2113 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.EXACTLY); 2114 break; 2115 case ViewGroup.LayoutParams.WRAP_CONTENT: 2116 // Window can resize. Set max size for root view. 2117 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.AT_MOST); 2118 break; 2119 default: 2120 // Window wants to be an exact size. Force root view to be that size. 2121 measureSpec = MeasureSpec.makeMeasureSpec(rootDimension, MeasureSpec.EXACTLY); 2122 break; 2123 } 2124 return measureSpec; 2125 } 2126 2127 int mHardwareYOffset; 2128 int mResizeAlpha; 2129 final Paint mResizePaint = new Paint(); 2130 2131 public void onHardwarePreDraw(HardwareCanvas canvas) { 2132 canvas.translate(0, -mHardwareYOffset); 2133 } 2134 2135 public void onHardwarePostDraw(HardwareCanvas canvas) { 2136 if (mResizeBuffer != null) { 2137 mResizePaint.setAlpha(mResizeAlpha); 2138 canvas.drawHardwareLayer(mResizeBuffer, 0.0f, mHardwareYOffset, mResizePaint); 2139 } 2140 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2141 } 2142 2143 /** 2144 * @hide 2145 */ 2146 void outputDisplayList(View view) { 2147 if (mAttachInfo != null && mAttachInfo.mHardwareCanvas != null) { 2148 DisplayList displayList = view.getDisplayList(); 2149 if (displayList != null) { 2150 mAttachInfo.mHardwareCanvas.outputDisplayList(displayList); 2151 } 2152 } 2153 } 2154 2155 /** 2156 * @see #PROPERTY_PROFILE_RENDERING 2157 */ 2158 private void profileRendering(boolean enabled) { 2159 if (mProfileRendering) { 2160 mRenderProfilingEnabled = enabled; 2161 2162 if (mRenderProfiler != null) { 2163 mChoreographer.removeFrameCallback(mRenderProfiler); 2164 } 2165 if (mRenderProfilingEnabled) { 2166 if (mRenderProfiler == null) { 2167 mRenderProfiler = new Choreographer.FrameCallback() { 2168 @Override 2169 public void doFrame(long frameTimeNanos) { 2170 mDirty.set(0, 0, mWidth, mHeight); 2171 scheduleTraversals(); 2172 if (mRenderProfilingEnabled) { 2173 mChoreographer.postFrameCallback(mRenderProfiler); 2174 } 2175 } 2176 }; 2177 } 2178 mChoreographer.postFrameCallback(mRenderProfiler); 2179 } else { 2180 mRenderProfiler = null; 2181 } 2182 } 2183 } 2184 2185 /** 2186 * Called from draw() when DEBUG_FPS is enabled 2187 */ 2188 private void trackFPS() { 2189 // Tracks frames per second drawn. First value in a series of draws may be bogus 2190 // because it down not account for the intervening idle time 2191 long nowTime = System.currentTimeMillis(); 2192 if (mFpsStartTime < 0) { 2193 mFpsStartTime = mFpsPrevTime = nowTime; 2194 mFpsNumFrames = 0; 2195 } else { 2196 ++mFpsNumFrames; 2197 String thisHash = Integer.toHexString(System.identityHashCode(this)); 2198 long frameTime = nowTime - mFpsPrevTime; 2199 long totalTime = nowTime - mFpsStartTime; 2200 Log.v(TAG, "0x" + thisHash + "\tFrame time:\t" + frameTime); 2201 mFpsPrevTime = nowTime; 2202 if (totalTime > 1000) { 2203 float fps = (float) mFpsNumFrames * 1000 / totalTime; 2204 Log.v(TAG, "0x" + thisHash + "\tFPS:\t" + fps); 2205 mFpsStartTime = nowTime; 2206 mFpsNumFrames = 0; 2207 } 2208 } 2209 } 2210 2211 private void performDraw() { 2212 if (!mAttachInfo.mScreenOn && !mReportNextDraw) { 2213 return; 2214 } 2215 2216 final boolean fullRedrawNeeded = mFullRedrawNeeded; 2217 mFullRedrawNeeded = false; 2218 2219 mIsDrawing = true; 2220 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "draw"); 2221 try { 2222 draw(fullRedrawNeeded); 2223 } finally { 2224 mIsDrawing = false; 2225 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2226 } 2227 2228 if (mReportNextDraw) { 2229 mReportNextDraw = false; 2230 2231 if (LOCAL_LOGV) { 2232 Log.v(TAG, "FINISHED DRAWING: " + mWindowAttributes.getTitle()); 2233 } 2234 if (mSurfaceHolder != null && mSurface.isValid()) { 2235 mSurfaceHolderCallback.surfaceRedrawNeeded(mSurfaceHolder); 2236 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 2237 if (callbacks != null) { 2238 for (SurfaceHolder.Callback c : callbacks) { 2239 if (c instanceof SurfaceHolder.Callback2) { 2240 ((SurfaceHolder.Callback2)c).surfaceRedrawNeeded( 2241 mSurfaceHolder); 2242 } 2243 } 2244 } 2245 } 2246 try { 2247 mWindowSession.finishDrawing(mWindow); 2248 } catch (RemoteException e) { 2249 } 2250 } 2251 } 2252 2253 private void draw(boolean fullRedrawNeeded) { 2254 Surface surface = mSurface; 2255 if (!surface.isValid()) { 2256 return; 2257 } 2258 2259 if (DEBUG_FPS) { 2260 trackFPS(); 2261 } 2262 2263 if (!sFirstDrawComplete) { 2264 synchronized (sFirstDrawHandlers) { 2265 sFirstDrawComplete = true; 2266 final int count = sFirstDrawHandlers.size(); 2267 for (int i = 0; i< count; i++) { 2268 mHandler.post(sFirstDrawHandlers.get(i)); 2269 } 2270 } 2271 } 2272 2273 scrollToRectOrFocus(null, false); 2274 2275 final AttachInfo attachInfo = mAttachInfo; 2276 if (attachInfo.mViewScrollChanged) { 2277 attachInfo.mViewScrollChanged = false; 2278 attachInfo.mTreeObserver.dispatchOnScrollChanged(); 2279 } 2280 2281 int yoff; 2282 boolean animating = mScroller != null && mScroller.computeScrollOffset(); 2283 if (animating) { 2284 yoff = mScroller.getCurrY(); 2285 } else { 2286 yoff = mScrollY; 2287 } 2288 if (mCurScrollY != yoff) { 2289 mCurScrollY = yoff; 2290 fullRedrawNeeded = true; 2291 } 2292 2293 final float appScale = attachInfo.mApplicationScale; 2294 final boolean scalingRequired = attachInfo.mScalingRequired; 2295 2296 int resizeAlpha = 0; 2297 if (mResizeBuffer != null) { 2298 long deltaTime = SystemClock.uptimeMillis() - mResizeBufferStartTime; 2299 if (deltaTime < mResizeBufferDuration) { 2300 float amt = deltaTime/(float) mResizeBufferDuration; 2301 amt = mResizeInterpolator.getInterpolation(amt); 2302 animating = true; 2303 resizeAlpha = 255 - (int)(amt*255); 2304 } else { 2305 disposeResizeBuffer(); 2306 } 2307 } 2308 2309 final Rect dirty = mDirty; 2310 if (mSurfaceHolder != null) { 2311 // The app owns the surface, we won't draw. 2312 dirty.setEmpty(); 2313 if (animating) { 2314 if (mScroller != null) { 2315 mScroller.abortAnimation(); 2316 } 2317 disposeResizeBuffer(); 2318 } 2319 return; 2320 } 2321 2322 if (fullRedrawNeeded) { 2323 attachInfo.mIgnoreDirtyState = true; 2324 dirty.set(0, 0, (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 2325 } 2326 2327 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2328 Log.v(TAG, "Draw " + mView + "/" 2329 + mWindowAttributes.getTitle() 2330 + ": dirty={" + dirty.left + "," + dirty.top 2331 + "," + dirty.right + "," + dirty.bottom + "} surface=" 2332 + surface + " surface.isValid()=" + surface.isValid() + ", appScale:" + 2333 appScale + ", width=" + mWidth + ", height=" + mHeight); 2334 } 2335 2336 invalidateDisplayLists(); 2337 2338 attachInfo.mTreeObserver.dispatchOnDraw(); 2339 2340 if (!dirty.isEmpty() || mIsAnimating) { 2341 if (attachInfo.mHardwareRenderer != null && attachInfo.mHardwareRenderer.isEnabled()) { 2342 // Draw with hardware renderer. 2343 mIsAnimating = false; 2344 mHardwareYOffset = yoff; 2345 mResizeAlpha = resizeAlpha; 2346 2347 mCurrentDirty.set(dirty); 2348 dirty.setEmpty(); 2349 2350 attachInfo.mHardwareRenderer.draw(mView, attachInfo, this, 2351 animating ? null : mCurrentDirty); 2352 } else { 2353 // If we get here with a disabled & requested hardware renderer, something went 2354 // wrong (an invalidate posted right before we destroyed the hardware surface 2355 // for instance) so we should just bail out. Locking the surface with software 2356 // rendering at this point would lock it forever and prevent hardware renderer 2357 // from doing its job when it comes back. 2358 // Before we request a new frame we must however attempt to reinitiliaze the 2359 // hardware renderer if it's in requested state. This would happen after an 2360 // eglTerminate() for instance. 2361 if (attachInfo.mHardwareRenderer != null && 2362 !attachInfo.mHardwareRenderer.isEnabled() && 2363 attachInfo.mHardwareRenderer.isRequested()) { 2364 2365 try { 2366 attachInfo.mHardwareRenderer.initializeIfNeeded(mWidth, mHeight, 2367 mHolder.getSurface()); 2368 } catch (Surface.OutOfResourcesException e) { 2369 handleOutOfResourcesException(e); 2370 return; 2371 } 2372 2373 mFullRedrawNeeded = true; 2374 scheduleTraversals(); 2375 return; 2376 } 2377 2378 if (!drawSoftware(surface, attachInfo, yoff, scalingRequired, dirty)) { 2379 return; 2380 } 2381 } 2382 } 2383 2384 if (animating) { 2385 mFullRedrawNeeded = true; 2386 scheduleTraversals(); 2387 } 2388 } 2389 2390 /** 2391 * @return true if drawing was succesfull, false if an error occurred 2392 */ 2393 private boolean drawSoftware(Surface surface, AttachInfo attachInfo, int yoff, 2394 boolean scalingRequired, Rect dirty) { 2395 2396 // Draw with software renderer. 2397 Canvas canvas; 2398 try { 2399 int left = dirty.left; 2400 int top = dirty.top; 2401 int right = dirty.right; 2402 int bottom = dirty.bottom; 2403 2404 canvas = mSurface.lockCanvas(dirty); 2405 2406 // The dirty rectangle can be modified by Surface.lockCanvas() 2407 //noinspection ConstantConditions 2408 if (left != dirty.left || top != dirty.top || right != dirty.right || 2409 bottom != dirty.bottom) { 2410 attachInfo.mIgnoreDirtyState = true; 2411 } 2412 2413 // TODO: Do this in native 2414 canvas.setDensity(mDensity); 2415 } catch (Surface.OutOfResourcesException e) { 2416 handleOutOfResourcesException(e); 2417 return false; 2418 } catch (IllegalArgumentException e) { 2419 Log.e(TAG, "Could not lock surface", e); 2420 // Don't assume this is due to out of memory, it could be 2421 // something else, and if it is something else then we could 2422 // kill stuff (or ourself) for no reason. 2423 mLayoutRequested = true; // ask wm for a new surface next time. 2424 return false; 2425 } 2426 2427 try { 2428 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2429 Log.v(TAG, "Surface " + surface + " drawing to bitmap w=" 2430 + canvas.getWidth() + ", h=" + canvas.getHeight()); 2431 //canvas.drawARGB(255, 255, 0, 0); 2432 } 2433 2434 // If this bitmap's format includes an alpha channel, we 2435 // need to clear it before drawing so that the child will 2436 // properly re-composite its drawing on a transparent 2437 // background. This automatically respects the clip/dirty region 2438 // or 2439 // If we are applying an offset, we need to clear the area 2440 // where the offset doesn't appear to avoid having garbage 2441 // left in the blank areas. 2442 if (!canvas.isOpaque() || yoff != 0) { 2443 canvas.drawColor(0, PorterDuff.Mode.CLEAR); 2444 } 2445 2446 dirty.setEmpty(); 2447 mIsAnimating = false; 2448 attachInfo.mDrawingTime = SystemClock.uptimeMillis(); 2449 mView.mPrivateFlags |= View.PFLAG_DRAWN; 2450 2451 if (DEBUG_DRAW) { 2452 Context cxt = mView.getContext(); 2453 Log.i(TAG, "Drawing: package:" + cxt.getPackageName() + 2454 ", metrics=" + cxt.getResources().getDisplayMetrics() + 2455 ", compatibilityInfo=" + cxt.getResources().getCompatibilityInfo()); 2456 } 2457 try { 2458 canvas.translate(0, -yoff); 2459 if (mTranslator != null) { 2460 mTranslator.translateCanvas(canvas); 2461 } 2462 canvas.setScreenDensity(scalingRequired ? mNoncompatDensity : 0); 2463 attachInfo.mSetIgnoreDirtyState = false; 2464 2465 mView.draw(canvas); 2466 2467 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2468 } finally { 2469 if (!attachInfo.mSetIgnoreDirtyState) { 2470 // Only clear the flag if it was not set during the mView.draw() call 2471 attachInfo.mIgnoreDirtyState = false; 2472 } 2473 } 2474 } finally { 2475 try { 2476 surface.unlockCanvasAndPost(canvas); 2477 } catch (IllegalArgumentException e) { 2478 Log.e(TAG, "Could not unlock surface", e); 2479 mLayoutRequested = true; // ask wm for a new surface next time. 2480 //noinspection ReturnInsideFinallyBlock 2481 return false; 2482 } 2483 2484 if (LOCAL_LOGV) { 2485 Log.v(TAG, "Surface " + surface + " unlockCanvasAndPost"); 2486 } 2487 } 2488 return true; 2489 } 2490 2491 /** 2492 * We want to draw a highlight around the current accessibility focused. 2493 * Since adding a style for all possible view is not a viable option we 2494 * have this specialized drawing method. 2495 * 2496 * Note: We are doing this here to be able to draw the highlight for 2497 * virtual views in addition to real ones. 2498 * 2499 * @param canvas The canvas on which to draw. 2500 */ 2501 private void drawAccessibilityFocusedDrawableIfNeeded(Canvas canvas) { 2502 AccessibilityManager manager = AccessibilityManager.getInstance(mView.mContext); 2503 if (!manager.isEnabled() || !manager.isTouchExplorationEnabled()) { 2504 return; 2505 } 2506 if (mAccessibilityFocusedHost == null || mAccessibilityFocusedHost.mAttachInfo == null) { 2507 return; 2508 } 2509 Drawable drawable = getAccessibilityFocusedDrawable(); 2510 if (drawable == null) { 2511 return; 2512 } 2513 AccessibilityNodeProvider provider = 2514 mAccessibilityFocusedHost.getAccessibilityNodeProvider(); 2515 Rect bounds = mView.mAttachInfo.mTmpInvalRect; 2516 if (provider == null) { 2517 mAccessibilityFocusedHost.getBoundsOnScreen(bounds); 2518 } else { 2519 if (mAccessibilityFocusedVirtualView == null) { 2520 return; 2521 } 2522 mAccessibilityFocusedVirtualView.getBoundsInScreen(bounds); 2523 } 2524 bounds.offset(-mAttachInfo.mWindowLeft, -mAttachInfo.mWindowTop); 2525 bounds.intersect(0, 0, mAttachInfo.mViewRootImpl.mWidth, mAttachInfo.mViewRootImpl.mHeight); 2526 drawable.setBounds(bounds); 2527 drawable.draw(canvas); 2528 } 2529 2530 private Drawable getAccessibilityFocusedDrawable() { 2531 if (mAttachInfo != null) { 2532 // Lazily load the accessibility focus drawable. 2533 if (mAttachInfo.mAccessibilityFocusDrawable == null) { 2534 TypedValue value = new TypedValue(); 2535 final boolean resolved = mView.mContext.getTheme().resolveAttribute( 2536 R.attr.accessibilityFocusedDrawable, value, true); 2537 if (resolved) { 2538 mAttachInfo.mAccessibilityFocusDrawable = 2539 mView.mContext.getResources().getDrawable(value.resourceId); 2540 } 2541 } 2542 return mAttachInfo.mAccessibilityFocusDrawable; 2543 } 2544 return null; 2545 } 2546 2547 void invalidateDisplayLists() { 2548 final ArrayList<DisplayList> displayLists = mDisplayLists; 2549 final int count = displayLists.size(); 2550 2551 for (int i = 0; i < count; i++) { 2552 final DisplayList displayList = displayLists.get(i); 2553 if (displayList.isDirty()) { 2554 displayList.reset(); 2555 } 2556 } 2557 2558 displayLists.clear(); 2559 } 2560 2561 /** 2562 * @hide 2563 */ 2564 public void setDrawDuringWindowsAnimating(boolean value) { 2565 mDrawDuringWindowsAnimating = value; 2566 if (value) { 2567 handleDispatchDoneAnimating(); 2568 } 2569 } 2570 2571 boolean scrollToRectOrFocus(Rect rectangle, boolean immediate) { 2572 final View.AttachInfo attachInfo = mAttachInfo; 2573 final Rect ci = attachInfo.mContentInsets; 2574 final Rect vi = attachInfo.mVisibleInsets; 2575 int scrollY = 0; 2576 boolean handled = false; 2577 2578 if (vi.left > ci.left || vi.top > ci.top 2579 || vi.right > ci.right || vi.bottom > ci.bottom) { 2580 // We'll assume that we aren't going to change the scroll 2581 // offset, since we want to avoid that unless it is actually 2582 // going to make the focus visible... otherwise we scroll 2583 // all over the place. 2584 scrollY = mScrollY; 2585 // We can be called for two different situations: during a draw, 2586 // to update the scroll position if the focus has changed (in which 2587 // case 'rectangle' is null), or in response to a 2588 // requestChildRectangleOnScreen() call (in which case 'rectangle' 2589 // is non-null and we just want to scroll to whatever that 2590 // rectangle is). 2591 final View focus = mView.findFocus(); 2592 if (focus == null) { 2593 return false; 2594 } 2595 View lastScrolledFocus = (mLastScrolledFocus != null) ? mLastScrolledFocus.get() : null; 2596 if (focus != lastScrolledFocus) { 2597 // If the focus has changed, then ignore any requests to scroll 2598 // to a rectangle; first we want to make sure the entire focus 2599 // view is visible. 2600 rectangle = null; 2601 } 2602 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Eval scroll: focus=" + focus 2603 + " rectangle=" + rectangle + " ci=" + ci 2604 + " vi=" + vi); 2605 if (focus == lastScrolledFocus && !mScrollMayChange && rectangle == null) { 2606 // Optimization: if the focus hasn't changed since last 2607 // time, and no layout has happened, then just leave things 2608 // as they are. 2609 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Keeping scroll y=" 2610 + mScrollY + " vi=" + vi.toShortString()); 2611 } else { 2612 // We need to determine if the currently focused view is 2613 // within the visible part of the window and, if not, apply 2614 // a pan so it can be seen. 2615 mLastScrolledFocus = new WeakReference<View>(focus); 2616 mScrollMayChange = false; 2617 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Need to scroll?"); 2618 // Try to find the rectangle from the focus view. 2619 if (focus.getGlobalVisibleRect(mVisRect, null)) { 2620 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Root w=" 2621 + mView.getWidth() + " h=" + mView.getHeight() 2622 + " ci=" + ci.toShortString() 2623 + " vi=" + vi.toShortString()); 2624 if (rectangle == null) { 2625 focus.getFocusedRect(mTempRect); 2626 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Focus " + focus 2627 + ": focusRect=" + mTempRect.toShortString()); 2628 if (mView instanceof ViewGroup) { 2629 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 2630 focus, mTempRect); 2631 } 2632 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2633 "Focus in window: focusRect=" 2634 + mTempRect.toShortString() 2635 + " visRect=" + mVisRect.toShortString()); 2636 } else { 2637 mTempRect.set(rectangle); 2638 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2639 "Request scroll to rect: " 2640 + mTempRect.toShortString() 2641 + " visRect=" + mVisRect.toShortString()); 2642 } 2643 if (mTempRect.intersect(mVisRect)) { 2644 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2645 "Focus window visible rect: " 2646 + mTempRect.toShortString()); 2647 if (mTempRect.height() > 2648 (mView.getHeight()-vi.top-vi.bottom)) { 2649 // If the focus simply is not going to fit, then 2650 // best is probably just to leave things as-is. 2651 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2652 "Too tall; leaving scrollY=" + scrollY); 2653 } else if ((mTempRect.top-scrollY) < vi.top) { 2654 scrollY -= vi.top - (mTempRect.top-scrollY); 2655 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2656 "Top covered; scrollY=" + scrollY); 2657 } else if ((mTempRect.bottom-scrollY) 2658 > (mView.getHeight()-vi.bottom)) { 2659 scrollY += (mTempRect.bottom-scrollY) 2660 - (mView.getHeight()-vi.bottom); 2661 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2662 "Bottom covered; scrollY=" + scrollY); 2663 } 2664 handled = true; 2665 } 2666 } 2667 } 2668 } 2669 2670 if (scrollY != mScrollY) { 2671 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Pan scroll changed: old=" 2672 + mScrollY + " , new=" + scrollY); 2673 if (!immediate && mResizeBuffer == null) { 2674 if (mScroller == null) { 2675 mScroller = new Scroller(mView.getContext()); 2676 } 2677 mScroller.startScroll(0, mScrollY, 0, scrollY-mScrollY); 2678 } else if (mScroller != null) { 2679 mScroller.abortAnimation(); 2680 } 2681 mScrollY = scrollY; 2682 } 2683 2684 return handled; 2685 } 2686 2687 /** 2688 * @hide 2689 */ 2690 public View getAccessibilityFocusedHost() { 2691 return mAccessibilityFocusedHost; 2692 } 2693 2694 /** 2695 * @hide 2696 */ 2697 public AccessibilityNodeInfo getAccessibilityFocusedVirtualView() { 2698 return mAccessibilityFocusedVirtualView; 2699 } 2700 2701 void setAccessibilityFocus(View view, AccessibilityNodeInfo node) { 2702 // If we have a virtual view with accessibility focus we need 2703 // to clear the focus and invalidate the virtual view bounds. 2704 if (mAccessibilityFocusedVirtualView != null) { 2705 2706 AccessibilityNodeInfo focusNode = mAccessibilityFocusedVirtualView; 2707 View focusHost = mAccessibilityFocusedHost; 2708 2709 // Wipe the state of the current accessibility focus since 2710 // the call into the provider to clear accessibility focus 2711 // will fire an accessibility event which will end up calling 2712 // this method and we want to have clean state when this 2713 // invocation happens. 2714 mAccessibilityFocusedHost = null; 2715 mAccessibilityFocusedVirtualView = null; 2716 2717 // Clear accessibility focus on the host after clearing state since 2718 // this method may be reentrant. 2719 focusHost.clearAccessibilityFocusNoCallbacks(); 2720 2721 AccessibilityNodeProvider provider = focusHost.getAccessibilityNodeProvider(); 2722 if (provider != null) { 2723 // Invalidate the area of the cleared accessibility focus. 2724 focusNode.getBoundsInParent(mTempRect); 2725 focusHost.invalidate(mTempRect); 2726 // Clear accessibility focus in the virtual node. 2727 final int virtualNodeId = AccessibilityNodeInfo.getVirtualDescendantId( 2728 focusNode.getSourceNodeId()); 2729 provider.performAction(virtualNodeId, 2730 AccessibilityNodeInfo.ACTION_CLEAR_ACCESSIBILITY_FOCUS, null); 2731 } 2732 focusNode.recycle(); 2733 } 2734 if (mAccessibilityFocusedHost != null) { 2735 // Clear accessibility focus in the view. 2736 mAccessibilityFocusedHost.clearAccessibilityFocusNoCallbacks(); 2737 } 2738 2739 // Set the new focus host and node. 2740 mAccessibilityFocusedHost = view; 2741 mAccessibilityFocusedVirtualView = node; 2742 } 2743 2744 public void requestChildFocus(View child, View focused) { 2745 if (DEBUG_INPUT_RESIZE) { 2746 Log.v(TAG, "Request child focus: focus now " + focused); 2747 } 2748 checkThread(); 2749 scheduleTraversals(); 2750 } 2751 2752 public void clearChildFocus(View child) { 2753 if (DEBUG_INPUT_RESIZE) { 2754 Log.v(TAG, "Clearing child focus"); 2755 } 2756 checkThread(); 2757 scheduleTraversals(); 2758 } 2759 2760 @Override 2761 public ViewParent getParentForAccessibility() { 2762 return null; 2763 } 2764 2765 public void focusableViewAvailable(View v) { 2766 checkThread(); 2767 if (mView != null) { 2768 if (!mView.hasFocus()) { 2769 v.requestFocus(); 2770 } else { 2771 // the one case where will transfer focus away from the current one 2772 // is if the current view is a view group that prefers to give focus 2773 // to its children first AND the view is a descendant of it. 2774 View focused = mView.findFocus(); 2775 if (focused instanceof ViewGroup) { 2776 ViewGroup group = (ViewGroup) focused; 2777 if (group.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 2778 && isViewDescendantOf(v, focused)) { 2779 v.requestFocus(); 2780 } 2781 } 2782 } 2783 } 2784 } 2785 2786 public void recomputeViewAttributes(View child) { 2787 checkThread(); 2788 if (mView == child) { 2789 mAttachInfo.mRecomputeGlobalAttributes = true; 2790 if (!mWillDrawSoon) { 2791 scheduleTraversals(); 2792 } 2793 } 2794 } 2795 2796 void dispatchDetachedFromWindow() { 2797 if (mView != null && mView.mAttachInfo != null) { 2798 if (mAttachInfo.mHardwareRenderer != null && 2799 mAttachInfo.mHardwareRenderer.isEnabled()) { 2800 mAttachInfo.mHardwareRenderer.validate(); 2801 } 2802 mAttachInfo.mTreeObserver.dispatchOnWindowAttachedChange(false); 2803 mView.dispatchDetachedFromWindow(); 2804 } 2805 2806 mAccessibilityInteractionConnectionManager.ensureNoConnection(); 2807 mAccessibilityManager.removeAccessibilityStateChangeListener( 2808 mAccessibilityInteractionConnectionManager); 2809 removeSendWindowContentChangedCallback(); 2810 2811 destroyHardwareRenderer(); 2812 2813 setAccessibilityFocus(null, null); 2814 2815 mView.assignParent(null); 2816 mView = null; 2817 mAttachInfo.mRootView = null; 2818 mAttachInfo.mSurface = null; 2819 2820 mSurface.release(); 2821 2822 if (mInputQueueCallback != null && mInputQueue != null) { 2823 mInputQueueCallback.onInputQueueDestroyed(mInputQueue); 2824 mInputQueue.dispose(); 2825 mInputQueueCallback = null; 2826 mInputQueue = null; 2827 } 2828 if (mInputEventReceiver != null) { 2829 mInputEventReceiver.dispose(); 2830 mInputEventReceiver = null; 2831 } 2832 try { 2833 mWindowSession.remove(mWindow); 2834 } catch (RemoteException e) { 2835 } 2836 2837 // Dispose the input channel after removing the window so the Window Manager 2838 // doesn't interpret the input channel being closed as an abnormal termination. 2839 if (mInputChannel != null) { 2840 mInputChannel.dispose(); 2841 mInputChannel = null; 2842 } 2843 2844 unscheduleTraversals(); 2845 } 2846 2847 void updateConfiguration(Configuration config, boolean force) { 2848 if (DEBUG_CONFIGURATION) Log.v(TAG, 2849 "Applying new config to window " 2850 + mWindowAttributes.getTitle() 2851 + ": " + config); 2852 2853 CompatibilityInfo ci = mDisplayAdjustments.getCompatibilityInfo(); 2854 if (!ci.equals(CompatibilityInfo.DEFAULT_COMPATIBILITY_INFO)) { 2855 config = new Configuration(config); 2856 ci.applyToConfiguration(mNoncompatDensity, config); 2857 } 2858 2859 synchronized (sConfigCallbacks) { 2860 for (int i=sConfigCallbacks.size()-1; i>=0; i--) { 2861 sConfigCallbacks.get(i).onConfigurationChanged(config); 2862 } 2863 } 2864 if (mView != null) { 2865 // At this point the resources have been updated to 2866 // have the most recent config, whatever that is. Use 2867 // the one in them which may be newer. 2868 config = mView.getResources().getConfiguration(); 2869 if (force || mLastConfiguration.diff(config) != 0) { 2870 final int lastLayoutDirection = mLastConfiguration.getLayoutDirection(); 2871 final int currentLayoutDirection = config.getLayoutDirection(); 2872 mLastConfiguration.setTo(config); 2873 if (lastLayoutDirection != currentLayoutDirection && 2874 mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 2875 mView.setLayoutDirection(currentLayoutDirection); 2876 } 2877 mView.dispatchConfigurationChanged(config); 2878 } 2879 } 2880 2881 mFlipControllerFallbackKeys = 2882 mContext.getResources().getBoolean(R.bool.flip_controller_fallback_keys); 2883 } 2884 2885 /** 2886 * Return true if child is an ancestor of parent, (or equal to the parent). 2887 */ 2888 public static boolean isViewDescendantOf(View child, View parent) { 2889 if (child == parent) { 2890 return true; 2891 } 2892 2893 final ViewParent theParent = child.getParent(); 2894 return (theParent instanceof ViewGroup) && isViewDescendantOf((View) theParent, parent); 2895 } 2896 2897 private static void forceLayout(View view) { 2898 view.forceLayout(); 2899 if (view instanceof ViewGroup) { 2900 ViewGroup group = (ViewGroup) view; 2901 final int count = group.getChildCount(); 2902 for (int i = 0; i < count; i++) { 2903 forceLayout(group.getChildAt(i)); 2904 } 2905 } 2906 } 2907 2908 private final static int MSG_INVALIDATE = 1; 2909 private final static int MSG_INVALIDATE_RECT = 2; 2910 private final static int MSG_DIE = 3; 2911 private final static int MSG_RESIZED = 4; 2912 private final static int MSG_RESIZED_REPORT = 5; 2913 private final static int MSG_WINDOW_FOCUS_CHANGED = 6; 2914 private final static int MSG_DISPATCH_INPUT_EVENT = 7; 2915 private final static int MSG_DISPATCH_APP_VISIBILITY = 8; 2916 private final static int MSG_DISPATCH_GET_NEW_SURFACE = 9; 2917 private final static int MSG_DISPATCH_KEY_FROM_IME = 11; 2918 private final static int MSG_FINISH_INPUT_CONNECTION = 12; 2919 private final static int MSG_CHECK_FOCUS = 13; 2920 private final static int MSG_CLOSE_SYSTEM_DIALOGS = 14; 2921 private final static int MSG_DISPATCH_DRAG_EVENT = 15; 2922 private final static int MSG_DISPATCH_DRAG_LOCATION_EVENT = 16; 2923 private final static int MSG_DISPATCH_SYSTEM_UI_VISIBILITY = 17; 2924 private final static int MSG_UPDATE_CONFIGURATION = 18; 2925 private final static int MSG_PROCESS_INPUT_EVENTS = 19; 2926 private final static int MSG_DISPATCH_SCREEN_STATE = 20; 2927 private final static int MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST = 21; 2928 private final static int MSG_DISPATCH_DONE_ANIMATING = 22; 2929 private final static int MSG_INVALIDATE_WORLD = 23; 2930 private final static int MSG_WINDOW_MOVED = 24; 2931 private final static int MSG_FLUSH_LAYER_UPDATES = 25; 2932 2933 final class ViewRootHandler extends Handler { 2934 @Override 2935 public String getMessageName(Message message) { 2936 switch (message.what) { 2937 case MSG_INVALIDATE: 2938 return "MSG_INVALIDATE"; 2939 case MSG_INVALIDATE_RECT: 2940 return "MSG_INVALIDATE_RECT"; 2941 case MSG_DIE: 2942 return "MSG_DIE"; 2943 case MSG_RESIZED: 2944 return "MSG_RESIZED"; 2945 case MSG_RESIZED_REPORT: 2946 return "MSG_RESIZED_REPORT"; 2947 case MSG_WINDOW_FOCUS_CHANGED: 2948 return "MSG_WINDOW_FOCUS_CHANGED"; 2949 case MSG_DISPATCH_INPUT_EVENT: 2950 return "MSG_DISPATCH_INPUT_EVENT"; 2951 case MSG_DISPATCH_APP_VISIBILITY: 2952 return "MSG_DISPATCH_APP_VISIBILITY"; 2953 case MSG_DISPATCH_GET_NEW_SURFACE: 2954 return "MSG_DISPATCH_GET_NEW_SURFACE"; 2955 case MSG_DISPATCH_KEY_FROM_IME: 2956 return "MSG_DISPATCH_KEY_FROM_IME"; 2957 case MSG_FINISH_INPUT_CONNECTION: 2958 return "MSG_FINISH_INPUT_CONNECTION"; 2959 case MSG_CHECK_FOCUS: 2960 return "MSG_CHECK_FOCUS"; 2961 case MSG_CLOSE_SYSTEM_DIALOGS: 2962 return "MSG_CLOSE_SYSTEM_DIALOGS"; 2963 case MSG_DISPATCH_DRAG_EVENT: 2964 return "MSG_DISPATCH_DRAG_EVENT"; 2965 case MSG_DISPATCH_DRAG_LOCATION_EVENT: 2966 return "MSG_DISPATCH_DRAG_LOCATION_EVENT"; 2967 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: 2968 return "MSG_DISPATCH_SYSTEM_UI_VISIBILITY"; 2969 case MSG_UPDATE_CONFIGURATION: 2970 return "MSG_UPDATE_CONFIGURATION"; 2971 case MSG_PROCESS_INPUT_EVENTS: 2972 return "MSG_PROCESS_INPUT_EVENTS"; 2973 case MSG_DISPATCH_SCREEN_STATE: 2974 return "MSG_DISPATCH_SCREEN_STATE"; 2975 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: 2976 return "MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST"; 2977 case MSG_DISPATCH_DONE_ANIMATING: 2978 return "MSG_DISPATCH_DONE_ANIMATING"; 2979 case MSG_WINDOW_MOVED: 2980 return "MSG_WINDOW_MOVED"; 2981 case MSG_FLUSH_LAYER_UPDATES: 2982 return "MSG_FLUSH_LAYER_UPDATES"; 2983 } 2984 return super.getMessageName(message); 2985 } 2986 2987 @Override 2988 public void handleMessage(Message msg) { 2989 switch (msg.what) { 2990 case MSG_INVALIDATE: 2991 ((View) msg.obj).invalidate(); 2992 break; 2993 case MSG_INVALIDATE_RECT: 2994 final View.AttachInfo.InvalidateInfo info = (View.AttachInfo.InvalidateInfo) msg.obj; 2995 info.target.invalidate(info.left, info.top, info.right, info.bottom); 2996 info.recycle(); 2997 break; 2998 case MSG_PROCESS_INPUT_EVENTS: 2999 mProcessInputEventsScheduled = false; 3000 doProcessInputEvents(); 3001 break; 3002 case MSG_DISPATCH_APP_VISIBILITY: 3003 handleAppVisibility(msg.arg1 != 0); 3004 break; 3005 case MSG_DISPATCH_GET_NEW_SURFACE: 3006 handleGetNewSurface(); 3007 break; 3008 case MSG_RESIZED: { 3009 // Recycled in the fall through... 3010 SomeArgs args = (SomeArgs) msg.obj; 3011 if (mWinFrame.equals(args.arg1) 3012 && mPendingOverscanInsets.equals(args.arg5) 3013 && mPendingContentInsets.equals(args.arg2) 3014 && mPendingVisibleInsets.equals(args.arg3) 3015 && args.arg4 == null) { 3016 break; 3017 } 3018 } // fall through... 3019 case MSG_RESIZED_REPORT: 3020 if (mAdded) { 3021 SomeArgs args = (SomeArgs) msg.obj; 3022 3023 Configuration config = (Configuration) args.arg4; 3024 if (config != null) { 3025 updateConfiguration(config, false); 3026 } 3027 3028 mWinFrame.set((Rect) args.arg1); 3029 mPendingOverscanInsets.set((Rect) args.arg5); 3030 mPendingContentInsets.set((Rect) args.arg2); 3031 mPendingVisibleInsets.set((Rect) args.arg3); 3032 3033 args.recycle(); 3034 3035 if (msg.what == MSG_RESIZED_REPORT) { 3036 mReportNextDraw = true; 3037 } 3038 3039 if (mView != null) { 3040 forceLayout(mView); 3041 } 3042 3043 requestLayout(); 3044 } 3045 break; 3046 case MSG_WINDOW_MOVED: 3047 if (mAdded) { 3048 final int w = mWinFrame.width(); 3049 final int h = mWinFrame.height(); 3050 final int l = msg.arg1; 3051 final int t = msg.arg2; 3052 mWinFrame.left = l; 3053 mWinFrame.right = l + w; 3054 mWinFrame.top = t; 3055 mWinFrame.bottom = t + h; 3056 3057 if (mView != null) { 3058 forceLayout(mView); 3059 } 3060 requestLayout(); 3061 } 3062 break; 3063 case MSG_WINDOW_FOCUS_CHANGED: { 3064 if (mAdded) { 3065 boolean hasWindowFocus = msg.arg1 != 0; 3066 mAttachInfo.mHasWindowFocus = hasWindowFocus; 3067 3068 profileRendering(hasWindowFocus); 3069 3070 if (hasWindowFocus) { 3071 boolean inTouchMode = msg.arg2 != 0; 3072 ensureTouchModeLocally(inTouchMode); 3073 3074 if (mAttachInfo.mHardwareRenderer != null && mSurface.isValid()){ 3075 mFullRedrawNeeded = true; 3076 try { 3077 mAttachInfo.mHardwareRenderer.initializeIfNeeded( 3078 mWidth, mHeight, mHolder.getSurface()); 3079 } catch (Surface.OutOfResourcesException e) { 3080 Log.e(TAG, "OutOfResourcesException locking surface", e); 3081 try { 3082 if (!mWindowSession.outOfMemory(mWindow)) { 3083 Slog.w(TAG, "No processes killed for memory; killing self"); 3084 Process.killProcess(Process.myPid()); 3085 } 3086 } catch (RemoteException ex) { 3087 } 3088 // Retry in a bit. 3089 sendMessageDelayed(obtainMessage(msg.what, msg.arg1, msg.arg2), 500); 3090 return; 3091 } 3092 } 3093 } 3094 3095 mLastWasImTarget = WindowManager.LayoutParams 3096 .mayUseInputMethod(mWindowAttributes.flags); 3097 3098 InputMethodManager imm = InputMethodManager.peekInstance(); 3099 if (mView != null) { 3100 if (hasWindowFocus && imm != null && mLastWasImTarget && 3101 !isInLocalFocusMode()) { 3102 imm.startGettingWindowFocus(mView); 3103 } 3104 mAttachInfo.mKeyDispatchState.reset(); 3105 mView.dispatchWindowFocusChanged(hasWindowFocus); 3106 mAttachInfo.mTreeObserver.dispatchOnWindowFocusChange(hasWindowFocus); 3107 } 3108 3109 // Note: must be done after the focus change callbacks, 3110 // so all of the view state is set up correctly. 3111 if (hasWindowFocus) { 3112 if (imm != null && mLastWasImTarget && !isInLocalFocusMode()) { 3113 imm.onWindowFocus(mView, mView.findFocus(), 3114 mWindowAttributes.softInputMode, 3115 !mHasHadWindowFocus, mWindowAttributes.flags); 3116 } 3117 // Clear the forward bit. We can just do this directly, since 3118 // the window manager doesn't care about it. 3119 mWindowAttributes.softInputMode &= 3120 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3121 ((WindowManager.LayoutParams)mView.getLayoutParams()) 3122 .softInputMode &= 3123 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3124 mHasHadWindowFocus = true; 3125 } 3126 3127 setAccessibilityFocus(null, null); 3128 3129 if (mView != null && mAccessibilityManager.isEnabled()) { 3130 if (hasWindowFocus) { 3131 mView.sendAccessibilityEvent( 3132 AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 3133 } 3134 } 3135 } 3136 } break; 3137 case MSG_DIE: 3138 doDie(); 3139 break; 3140 case MSG_DISPATCH_INPUT_EVENT: { 3141 InputEvent event = (InputEvent)msg.obj; 3142 enqueueInputEvent(event, null, 0, true); 3143 } break; 3144 case MSG_DISPATCH_KEY_FROM_IME: { 3145 if (LOCAL_LOGV) Log.v( 3146 TAG, "Dispatching key " 3147 + msg.obj + " from IME to " + mView); 3148 KeyEvent event = (KeyEvent)msg.obj; 3149 if ((event.getFlags()&KeyEvent.FLAG_FROM_SYSTEM) != 0) { 3150 // The IME is trying to say this event is from the 3151 // system! Bad bad bad! 3152 //noinspection UnusedAssignment 3153 event = KeyEvent.changeFlags(event, event.getFlags() & ~KeyEvent.FLAG_FROM_SYSTEM); 3154 } 3155 enqueueInputEvent(event, null, QueuedInputEvent.FLAG_DELIVER_POST_IME, true); 3156 } break; 3157 case MSG_FINISH_INPUT_CONNECTION: { 3158 InputMethodManager imm = InputMethodManager.peekInstance(); 3159 if (imm != null) { 3160 imm.reportFinishInputConnection((InputConnection)msg.obj); 3161 } 3162 } break; 3163 case MSG_CHECK_FOCUS: { 3164 InputMethodManager imm = InputMethodManager.peekInstance(); 3165 if (imm != null) { 3166 imm.checkFocus(); 3167 } 3168 } break; 3169 case MSG_CLOSE_SYSTEM_DIALOGS: { 3170 if (mView != null) { 3171 mView.onCloseSystemDialogs((String)msg.obj); 3172 } 3173 } break; 3174 case MSG_DISPATCH_DRAG_EVENT: 3175 case MSG_DISPATCH_DRAG_LOCATION_EVENT: { 3176 DragEvent event = (DragEvent)msg.obj; 3177 event.mLocalState = mLocalDragState; // only present when this app called startDrag() 3178 handleDragEvent(event); 3179 } break; 3180 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: { 3181 handleDispatchSystemUiVisibilityChanged((SystemUiVisibilityInfo) msg.obj); 3182 } break; 3183 case MSG_UPDATE_CONFIGURATION: { 3184 Configuration config = (Configuration)msg.obj; 3185 if (config.isOtherSeqNewer(mLastConfiguration)) { 3186 config = mLastConfiguration; 3187 } 3188 updateConfiguration(config, false); 3189 } break; 3190 case MSG_DISPATCH_SCREEN_STATE: { 3191 if (mView != null) { 3192 handleScreenStateChange(msg.arg1 == 1); 3193 } 3194 } break; 3195 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: { 3196 setAccessibilityFocus(null, null); 3197 } break; 3198 case MSG_DISPATCH_DONE_ANIMATING: { 3199 handleDispatchDoneAnimating(); 3200 } break; 3201 case MSG_INVALIDATE_WORLD: { 3202 if (mView != null) { 3203 invalidateWorld(mView); 3204 } 3205 } break; 3206 case MSG_FLUSH_LAYER_UPDATES: { 3207 flushHardwareLayerUpdates(); 3208 } break; 3209 } 3210 } 3211 } 3212 3213 final ViewRootHandler mHandler = new ViewRootHandler(); 3214 3215 /** 3216 * Something in the current window tells us we need to change the touch mode. For 3217 * example, we are not in touch mode, and the user touches the screen. 3218 * 3219 * If the touch mode has changed, tell the window manager, and handle it locally. 3220 * 3221 * @param inTouchMode Whether we want to be in touch mode. 3222 * @return True if the touch mode changed and focus changed was changed as a result 3223 */ 3224 boolean ensureTouchMode(boolean inTouchMode) { 3225 if (DBG) Log.d("touchmode", "ensureTouchMode(" + inTouchMode + "), current " 3226 + "touch mode is " + mAttachInfo.mInTouchMode); 3227 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3228 3229 // tell the window manager 3230 try { 3231 if (!isInLocalFocusMode()) { 3232 mWindowSession.setInTouchMode(inTouchMode); 3233 } 3234 } catch (RemoteException e) { 3235 throw new RuntimeException(e); 3236 } 3237 3238 // handle the change 3239 return ensureTouchModeLocally(inTouchMode); 3240 } 3241 3242 /** 3243 * Ensure that the touch mode for this window is set, and if it is changing, 3244 * take the appropriate action. 3245 * @param inTouchMode Whether we want to be in touch mode. 3246 * @return True if the touch mode changed and focus changed was changed as a result 3247 */ 3248 private boolean ensureTouchModeLocally(boolean inTouchMode) { 3249 if (DBG) Log.d("touchmode", "ensureTouchModeLocally(" + inTouchMode + "), current " 3250 + "touch mode is " + mAttachInfo.mInTouchMode); 3251 3252 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3253 3254 mAttachInfo.mInTouchMode = inTouchMode; 3255 mAttachInfo.mTreeObserver.dispatchOnTouchModeChanged(inTouchMode); 3256 3257 return (inTouchMode) ? enterTouchMode() : leaveTouchMode(); 3258 } 3259 3260 private boolean enterTouchMode() { 3261 if (mView != null && mView.hasFocus()) { 3262 // note: not relying on mFocusedView here because this could 3263 // be when the window is first being added, and mFocused isn't 3264 // set yet. 3265 final View focused = mView.findFocus(); 3266 if (focused != null && !focused.isFocusableInTouchMode()) { 3267 final ViewGroup ancestorToTakeFocus = findAncestorToTakeFocusInTouchMode(focused); 3268 if (ancestorToTakeFocus != null) { 3269 // there is an ancestor that wants focus after its 3270 // descendants that is focusable in touch mode.. give it 3271 // focus 3272 return ancestorToTakeFocus.requestFocus(); 3273 } else { 3274 // There's nothing to focus. Clear and propagate through the 3275 // hierarchy, but don't attempt to place new focus. 3276 focused.clearFocusInternal(true, false); 3277 return true; 3278 } 3279 } 3280 } 3281 return false; 3282 } 3283 3284 /** 3285 * Find an ancestor of focused that wants focus after its descendants and is 3286 * focusable in touch mode. 3287 * @param focused The currently focused view. 3288 * @return An appropriate view, or null if no such view exists. 3289 */ 3290 private static ViewGroup findAncestorToTakeFocusInTouchMode(View focused) { 3291 ViewParent parent = focused.getParent(); 3292 while (parent instanceof ViewGroup) { 3293 final ViewGroup vgParent = (ViewGroup) parent; 3294 if (vgParent.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 3295 && vgParent.isFocusableInTouchMode()) { 3296 return vgParent; 3297 } 3298 if (vgParent.isRootNamespace()) { 3299 return null; 3300 } else { 3301 parent = vgParent.getParent(); 3302 } 3303 } 3304 return null; 3305 } 3306 3307 private boolean leaveTouchMode() { 3308 if (mView != null) { 3309 if (mView.hasFocus()) { 3310 View focusedView = mView.findFocus(); 3311 if (!(focusedView instanceof ViewGroup)) { 3312 // some view has focus, let it keep it 3313 return false; 3314 } else if (((ViewGroup) focusedView).getDescendantFocusability() != 3315 ViewGroup.FOCUS_AFTER_DESCENDANTS) { 3316 // some view group has focus, and doesn't prefer its children 3317 // over itself for focus, so let them keep it. 3318 return false; 3319 } 3320 } 3321 3322 // find the best view to give focus to in this brave new non-touch-mode 3323 // world 3324 final View focused = focusSearch(null, View.FOCUS_DOWN); 3325 if (focused != null) { 3326 return focused.requestFocus(View.FOCUS_DOWN); 3327 } 3328 } 3329 return false; 3330 } 3331 3332 /** 3333 * Base class for implementing a stage in the chain of responsibility 3334 * for processing input events. 3335 * <p> 3336 * Events are delivered to the stage by the {@link #deliver} method. The stage 3337 * then has the choice of finishing the event or forwarding it to the next stage. 3338 * </p> 3339 */ 3340 abstract class InputStage { 3341 private final InputStage mNext; 3342 3343 protected static final int FORWARD = 0; 3344 protected static final int FINISH_HANDLED = 1; 3345 protected static final int FINISH_NOT_HANDLED = 2; 3346 3347 /** 3348 * Creates an input stage. 3349 * @param next The next stage to which events should be forwarded. 3350 */ 3351 public InputStage(InputStage next) { 3352 mNext = next; 3353 } 3354 3355 /** 3356 * Delivers an event to be processed. 3357 */ 3358 public final void deliver(QueuedInputEvent q) { 3359 if ((q.mFlags & QueuedInputEvent.FLAG_FINISHED) != 0) { 3360 forward(q); 3361 } else if (mView == null || !mAdded) { 3362 Slog.w(TAG, "Dropping event due to root view being removed: " + q.mEvent); 3363 finish(q, false); 3364 } else if (!mAttachInfo.mHasWindowFocus && 3365 !q.mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER) && 3366 !isTerminalInputEvent(q.mEvent)) { 3367 // If this is a focused event and the window doesn't currently have input focus, 3368 // then drop this event. This could be an event that came back from the previous 3369 // stage but the window has lost focus in the meantime. 3370 Slog.w(TAG, "Dropping event due to no window focus: " + q.mEvent); 3371 finish(q, false); 3372 } else { 3373 apply(q, onProcess(q)); 3374 } 3375 } 3376 3377 /** 3378 * Marks the the input event as finished then forwards it to the next stage. 3379 */ 3380 protected void finish(QueuedInputEvent q, boolean handled) { 3381 q.mFlags |= QueuedInputEvent.FLAG_FINISHED; 3382 if (handled) { 3383 q.mFlags |= QueuedInputEvent.FLAG_FINISHED_HANDLED; 3384 } 3385 forward(q); 3386 } 3387 3388 /** 3389 * Forwards the event to the next stage. 3390 */ 3391 protected void forward(QueuedInputEvent q) { 3392 onDeliverToNext(q); 3393 } 3394 3395 /** 3396 * Applies a result code from {@link #onProcess} to the specified event. 3397 */ 3398 protected void apply(QueuedInputEvent q, int result) { 3399 if (result == FORWARD) { 3400 forward(q); 3401 } else if (result == FINISH_HANDLED) { 3402 finish(q, true); 3403 } else if (result == FINISH_NOT_HANDLED) { 3404 finish(q, false); 3405 } else { 3406 throw new IllegalArgumentException("Invalid result: " + result); 3407 } 3408 } 3409 3410 /** 3411 * Called when an event is ready to be processed. 3412 * @return A result code indicating how the event was handled. 3413 */ 3414 protected int onProcess(QueuedInputEvent q) { 3415 return FORWARD; 3416 } 3417 3418 /** 3419 * Called when an event is being delivered to the next stage. 3420 */ 3421 protected void onDeliverToNext(QueuedInputEvent q) { 3422 if (mNext != null) { 3423 mNext.deliver(q); 3424 } else { 3425 finishInputEvent(q); 3426 } 3427 } 3428 } 3429 3430 /** 3431 * Base class for implementing an input pipeline stage that supports 3432 * asynchronous and out-of-order processing of input events. 3433 * <p> 3434 * In addition to what a normal input stage can do, an asynchronous 3435 * input stage may also defer an input event that has been delivered to it 3436 * and finish or forward it later. 3437 * </p> 3438 */ 3439 abstract class AsyncInputStage extends InputStage { 3440 private final String mTraceCounter; 3441 3442 private QueuedInputEvent mQueueHead; 3443 private QueuedInputEvent mQueueTail; 3444 private int mQueueLength; 3445 3446 protected static final int DEFER = 3; 3447 3448 /** 3449 * Creates an asynchronous input stage. 3450 * @param next The next stage to which events should be forwarded. 3451 * @param traceCounter The name of a counter to record the size of 3452 * the queue of pending events. 3453 */ 3454 public AsyncInputStage(InputStage next, String traceCounter) { 3455 super(next); 3456 mTraceCounter = traceCounter; 3457 } 3458 3459 /** 3460 * Marks the event as deferred, which is to say that it will be handled 3461 * asynchronously. The caller is responsible for calling {@link #forward} 3462 * or {@link #finish} later when it is done handling the event. 3463 */ 3464 protected void defer(QueuedInputEvent q) { 3465 q.mFlags |= QueuedInputEvent.FLAG_DEFERRED; 3466 enqueue(q); 3467 } 3468 3469 @Override 3470 protected void forward(QueuedInputEvent q) { 3471 // Clear the deferred flag. 3472 q.mFlags &= ~QueuedInputEvent.FLAG_DEFERRED; 3473 3474 // Fast path if the queue is empty. 3475 QueuedInputEvent curr = mQueueHead; 3476 if (curr == null) { 3477 super.forward(q); 3478 return; 3479 } 3480 3481 // Determine whether the event must be serialized behind any others 3482 // before it can be delivered to the next stage. This is done because 3483 // deferred events might be handled out of order by the stage. 3484 final int deviceId = q.mEvent.getDeviceId(); 3485 QueuedInputEvent prev = null; 3486 boolean blocked = false; 3487 while (curr != null && curr != q) { 3488 if (!blocked && deviceId == curr.mEvent.getDeviceId()) { 3489 blocked = true; 3490 } 3491 prev = curr; 3492 curr = curr.mNext; 3493 } 3494 3495 // If the event is blocked, then leave it in the queue to be delivered later. 3496 // Note that the event might not yet be in the queue if it was not previously 3497 // deferred so we will enqueue it if needed. 3498 if (blocked) { 3499 if (curr == null) { 3500 enqueue(q); 3501 } 3502 return; 3503 } 3504 3505 // The event is not blocked. Deliver it immediately. 3506 if (curr != null) { 3507 curr = curr.mNext; 3508 dequeue(q, prev); 3509 } 3510 super.forward(q); 3511 3512 // Dequeuing this event may have unblocked successors. Deliver them. 3513 while (curr != null) { 3514 if (deviceId == curr.mEvent.getDeviceId()) { 3515 if ((curr.mFlags & QueuedInputEvent.FLAG_DEFERRED) != 0) { 3516 break; 3517 } 3518 QueuedInputEvent next = curr.mNext; 3519 dequeue(curr, prev); 3520 super.forward(curr); 3521 curr = next; 3522 } else { 3523 prev = curr; 3524 curr = curr.mNext; 3525 } 3526 } 3527 } 3528 3529 @Override 3530 protected void apply(QueuedInputEvent q, int result) { 3531 if (result == DEFER) { 3532 defer(q); 3533 } else { 3534 super.apply(q, result); 3535 } 3536 } 3537 3538 private void enqueue(QueuedInputEvent q) { 3539 if (mQueueTail == null) { 3540 mQueueHead = q; 3541 mQueueTail = q; 3542 } else { 3543 mQueueTail.mNext = q; 3544 mQueueTail = q; 3545 } 3546 3547 mQueueLength += 1; 3548 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 3549 } 3550 3551 private void dequeue(QueuedInputEvent q, QueuedInputEvent prev) { 3552 if (prev == null) { 3553 mQueueHead = q.mNext; 3554 } else { 3555 prev.mNext = q.mNext; 3556 } 3557 if (mQueueTail == q) { 3558 mQueueTail = prev; 3559 } 3560 q.mNext = null; 3561 3562 mQueueLength -= 1; 3563 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 3564 } 3565 } 3566 3567 /** 3568 * Delivers pre-ime input events to a native activity. 3569 * Does not support pointer events. 3570 */ 3571 final class NativePreImeInputStage extends AsyncInputStage 3572 implements InputQueue.FinishedInputEventCallback { 3573 public NativePreImeInputStage(InputStage next, String traceCounter) { 3574 super(next, traceCounter); 3575 } 3576 3577 @Override 3578 protected int onProcess(QueuedInputEvent q) { 3579 if (mInputQueue != null && q.mEvent instanceof KeyEvent) { 3580 mInputQueue.sendInputEvent(q.mEvent, q, true, this); 3581 return DEFER; 3582 } 3583 return FORWARD; 3584 } 3585 3586 @Override 3587 public void onFinishedInputEvent(Object token, boolean handled) { 3588 QueuedInputEvent q = (QueuedInputEvent)token; 3589 if (handled) { 3590 finish(q, true); 3591 return; 3592 } 3593 forward(q); 3594 } 3595 } 3596 3597 /** 3598 * Delivers pre-ime input events to the view hierarchy. 3599 * Does not support pointer events. 3600 */ 3601 final class ViewPreImeInputStage extends InputStage { 3602 public ViewPreImeInputStage(InputStage next) { 3603 super(next); 3604 } 3605 3606 @Override 3607 protected int onProcess(QueuedInputEvent q) { 3608 if (q.mEvent instanceof KeyEvent) { 3609 return processKeyEvent(q); 3610 } 3611 return FORWARD; 3612 } 3613 3614 private int processKeyEvent(QueuedInputEvent q) { 3615 final KeyEvent event = (KeyEvent)q.mEvent; 3616 if (mView.dispatchKeyEventPreIme(event)) { 3617 return FINISH_HANDLED; 3618 } 3619 return FORWARD; 3620 } 3621 } 3622 3623 /** 3624 * Delivers input events to the ime. 3625 * Does not support pointer events. 3626 */ 3627 final class ImeInputStage extends AsyncInputStage 3628 implements InputMethodManager.FinishedInputEventCallback { 3629 public ImeInputStage(InputStage next, String traceCounter) { 3630 super(next, traceCounter); 3631 } 3632 3633 @Override 3634 protected int onProcess(QueuedInputEvent q) { 3635 if (mLastWasImTarget && !isInLocalFocusMode()) { 3636 InputMethodManager imm = InputMethodManager.peekInstance(); 3637 if (imm != null) { 3638 final InputEvent event = q.mEvent; 3639 if (DEBUG_IMF) Log.v(TAG, "Sending input event to IME: " + event); 3640 int result = imm.dispatchInputEvent(event, q, this, mHandler); 3641 if (result == InputMethodManager.DISPATCH_HANDLED) { 3642 return FINISH_HANDLED; 3643 } else if (result == InputMethodManager.DISPATCH_NOT_HANDLED) { 3644 return FINISH_NOT_HANDLED; 3645 } else { 3646 return DEFER; // callback will be invoked later 3647 } 3648 } 3649 } 3650 return FORWARD; 3651 } 3652 3653 @Override 3654 public void onFinishedInputEvent(Object token, boolean handled) { 3655 QueuedInputEvent q = (QueuedInputEvent)token; 3656 if (handled) { 3657 finish(q, true); 3658 return; 3659 } 3660 forward(q); 3661 } 3662 } 3663 3664 /** 3665 * Performs early processing of post-ime input events. 3666 */ 3667 final class EarlyPostImeInputStage extends InputStage { 3668 public EarlyPostImeInputStage(InputStage next) { 3669 super(next); 3670 } 3671 3672 @Override 3673 protected int onProcess(QueuedInputEvent q) { 3674 if (q.mEvent instanceof KeyEvent) { 3675 return processKeyEvent(q); 3676 } else { 3677 final int source = q.mEvent.getSource(); 3678 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 3679 return processPointerEvent(q); 3680 } 3681 } 3682 return FORWARD; 3683 } 3684 3685 private int processKeyEvent(QueuedInputEvent q) { 3686 final KeyEvent event = (KeyEvent)q.mEvent; 3687 3688 // If the key's purpose is to exit touch mode then we consume it 3689 // and consider it handled. 3690 if (checkForLeavingTouchModeAndConsume(event)) { 3691 return FINISH_HANDLED; 3692 } 3693 3694 // Make sure the fallback event policy sees all keys that will be 3695 // delivered to the view hierarchy. 3696 mFallbackEventHandler.preDispatchKeyEvent(event); 3697 return FORWARD; 3698 } 3699 3700 private int processPointerEvent(QueuedInputEvent q) { 3701 final MotionEvent event = (MotionEvent)q.mEvent; 3702 3703 // Translate the pointer event for compatibility, if needed. 3704 if (mTranslator != null) { 3705 mTranslator.translateEventInScreenToAppWindow(event); 3706 } 3707 3708 // Enter touch mode on down or scroll. 3709 final int action = event.getAction(); 3710 if (action == MotionEvent.ACTION_DOWN || action == MotionEvent.ACTION_SCROLL) { 3711 ensureTouchMode(true); 3712 } 3713 3714 // Offset the scroll position. 3715 if (mCurScrollY != 0) { 3716 event.offsetLocation(0, mCurScrollY); 3717 } 3718 3719 // Remember the touch position for possible drag-initiation. 3720 if (event.isTouchEvent()) { 3721 mLastTouchPoint.x = event.getRawX(); 3722 mLastTouchPoint.y = event.getRawY(); 3723 } 3724 return FORWARD; 3725 } 3726 } 3727 3728 /** 3729 * Delivers post-ime input events to a native activity. 3730 */ 3731 final class NativePostImeInputStage extends AsyncInputStage 3732 implements InputQueue.FinishedInputEventCallback { 3733 public NativePostImeInputStage(InputStage next, String traceCounter) { 3734 super(next, traceCounter); 3735 } 3736 3737 @Override 3738 protected int onProcess(QueuedInputEvent q) { 3739 if (mInputQueue != null) { 3740 mInputQueue.sendInputEvent(q.mEvent, q, false, this); 3741 return DEFER; 3742 } 3743 return FORWARD; 3744 } 3745 3746 @Override 3747 public void onFinishedInputEvent(Object token, boolean handled) { 3748 QueuedInputEvent q = (QueuedInputEvent)token; 3749 if (handled) { 3750 finish(q, true); 3751 return; 3752 } 3753 forward(q); 3754 } 3755 } 3756 3757 /** 3758 * Delivers post-ime input events to the view hierarchy. 3759 */ 3760 final class ViewPostImeInputStage extends InputStage { 3761 public ViewPostImeInputStage(InputStage next) { 3762 super(next); 3763 } 3764 3765 @Override 3766 protected int onProcess(QueuedInputEvent q) { 3767 if (q.mEvent instanceof KeyEvent) { 3768 return processKeyEvent(q); 3769 } else { 3770 final int source = q.mEvent.getSource(); 3771 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 3772 return processPointerEvent(q); 3773 } else if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 3774 return processTrackballEvent(q); 3775 } else { 3776 return processGenericMotionEvent(q); 3777 } 3778 } 3779 } 3780 3781 private int processKeyEvent(QueuedInputEvent q) { 3782 final KeyEvent event = (KeyEvent)q.mEvent; 3783 3784 // Deliver the key to the view hierarchy. 3785 if (mView.dispatchKeyEvent(event)) { 3786 return FINISH_HANDLED; 3787 } 3788 3789 // If the Control modifier is held, try to interpret the key as a shortcut. 3790 if (event.getAction() == KeyEvent.ACTION_DOWN 3791 && event.isCtrlPressed() 3792 && event.getRepeatCount() == 0 3793 && !KeyEvent.isModifierKey(event.getKeyCode())) { 3794 if (mView.dispatchKeyShortcutEvent(event)) { 3795 return FINISH_HANDLED; 3796 } 3797 } 3798 3799 // Apply the fallback event policy. 3800 if (mFallbackEventHandler.dispatchKeyEvent(event)) { 3801 return FINISH_HANDLED; 3802 } 3803 3804 // Handle automatic focus changes. 3805 if (event.getAction() == KeyEvent.ACTION_DOWN) { 3806 int direction = 0; 3807 switch (event.getKeyCode()) { 3808 case KeyEvent.KEYCODE_DPAD_LEFT: 3809 if (event.hasNoModifiers()) { 3810 direction = View.FOCUS_LEFT; 3811 } 3812 break; 3813 case KeyEvent.KEYCODE_DPAD_RIGHT: 3814 if (event.hasNoModifiers()) { 3815 direction = View.FOCUS_RIGHT; 3816 } 3817 break; 3818 case KeyEvent.KEYCODE_DPAD_UP: 3819 if (event.hasNoModifiers()) { 3820 direction = View.FOCUS_UP; 3821 } 3822 break; 3823 case KeyEvent.KEYCODE_DPAD_DOWN: 3824 if (event.hasNoModifiers()) { 3825 direction = View.FOCUS_DOWN; 3826 } 3827 break; 3828 case KeyEvent.KEYCODE_TAB: 3829 if (event.hasNoModifiers()) { 3830 direction = View.FOCUS_FORWARD; 3831 } else if (event.hasModifiers(KeyEvent.META_SHIFT_ON)) { 3832 direction = View.FOCUS_BACKWARD; 3833 } 3834 break; 3835 } 3836 if (direction != 0) { 3837 View focused = mView.findFocus(); 3838 if (focused != null) { 3839 View v = focused.focusSearch(direction); 3840 if (v != null && v != focused) { 3841 // do the math the get the interesting rect 3842 // of previous focused into the coord system of 3843 // newly focused view 3844 focused.getFocusedRect(mTempRect); 3845 if (mView instanceof ViewGroup) { 3846 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 3847 focused, mTempRect); 3848 ((ViewGroup) mView).offsetRectIntoDescendantCoords( 3849 v, mTempRect); 3850 } 3851 if (v.requestFocus(direction, mTempRect)) { 3852 playSoundEffect(SoundEffectConstants 3853 .getContantForFocusDirection(direction)); 3854 return FINISH_HANDLED; 3855 } 3856 } 3857 3858 // Give the focused view a last chance to handle the dpad key. 3859 if (mView.dispatchUnhandledMove(focused, direction)) { 3860 return FINISH_HANDLED; 3861 } 3862 } else { 3863 // find the best view to give focus to in this non-touch-mode with no-focus 3864 View v = focusSearch(null, direction); 3865 if (v != null && v.requestFocus(direction)) { 3866 return FINISH_HANDLED; 3867 } 3868 } 3869 } 3870 } 3871 return FORWARD; 3872 } 3873 3874 private int processPointerEvent(QueuedInputEvent q) { 3875 final MotionEvent event = (MotionEvent)q.mEvent; 3876 3877 if (mView.dispatchPointerEvent(event)) { 3878 return FINISH_HANDLED; 3879 } 3880 return FORWARD; 3881 } 3882 3883 private int processTrackballEvent(QueuedInputEvent q) { 3884 final MotionEvent event = (MotionEvent)q.mEvent; 3885 3886 if (mView.dispatchTrackballEvent(event)) { 3887 return FINISH_HANDLED; 3888 } 3889 return FORWARD; 3890 } 3891 3892 private int processGenericMotionEvent(QueuedInputEvent q) { 3893 final MotionEvent event = (MotionEvent)q.mEvent; 3894 3895 // Deliver the event to the view. 3896 if (mView.dispatchGenericMotionEvent(event)) { 3897 return FINISH_HANDLED; 3898 } 3899 return FORWARD; 3900 } 3901 } 3902 3903 /** 3904 * Performs synthesis of new input events from unhandled input events. 3905 */ 3906 final class SyntheticInputStage extends InputStage { 3907 private final SyntheticTrackballHandler mTrackball = new SyntheticTrackballHandler(); 3908 private final SyntheticJoystickHandler mJoystick = new SyntheticJoystickHandler(); 3909 private final SyntheticTouchNavigationHandler mTouchNavigation = 3910 new SyntheticTouchNavigationHandler(); 3911 private final SyntheticKeyHandler mKeys = new SyntheticKeyHandler(); 3912 3913 public SyntheticInputStage() { 3914 super(null); 3915 } 3916 3917 @Override 3918 protected int onProcess(QueuedInputEvent q) { 3919 q.mFlags |= QueuedInputEvent.FLAG_RESYNTHESIZED; 3920 if (q.mEvent instanceof MotionEvent) { 3921 final MotionEvent event = (MotionEvent)q.mEvent; 3922 final int source = event.getSource(); 3923 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 3924 mTrackball.process(event); 3925 return FINISH_HANDLED; 3926 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 3927 mJoystick.process(event); 3928 return FINISH_HANDLED; 3929 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 3930 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 3931 mTouchNavigation.process(event); 3932 return FINISH_HANDLED; 3933 } 3934 } else if (q.mEvent instanceof KeyEvent) { 3935 if (mKeys.process((KeyEvent) q.mEvent)) { 3936 return FINISH_HANDLED; 3937 } 3938 } 3939 3940 return FORWARD; 3941 } 3942 3943 @Override 3944 protected void onDeliverToNext(QueuedInputEvent q) { 3945 if ((q.mFlags & QueuedInputEvent.FLAG_RESYNTHESIZED) == 0) { 3946 // Cancel related synthetic events if any prior stage has handled the event. 3947 if (q.mEvent instanceof MotionEvent) { 3948 final MotionEvent event = (MotionEvent)q.mEvent; 3949 final int source = event.getSource(); 3950 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 3951 mTrackball.cancel(event); 3952 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 3953 mJoystick.cancel(event); 3954 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 3955 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 3956 mTouchNavigation.cancel(event); 3957 } 3958 } 3959 } 3960 super.onDeliverToNext(q); 3961 } 3962 } 3963 3964 /** 3965 * Creates dpad events from unhandled trackball movements. 3966 */ 3967 final class SyntheticTrackballHandler { 3968 private final TrackballAxis mX = new TrackballAxis(); 3969 private final TrackballAxis mY = new TrackballAxis(); 3970 private long mLastTime; 3971 3972 public void process(MotionEvent event) { 3973 // Translate the trackball event into DPAD keys and try to deliver those. 3974 long curTime = SystemClock.uptimeMillis(); 3975 if ((mLastTime + MAX_TRACKBALL_DELAY) < curTime) { 3976 // It has been too long since the last movement, 3977 // so restart at the beginning. 3978 mX.reset(0); 3979 mY.reset(0); 3980 mLastTime = curTime; 3981 } 3982 3983 final int action = event.getAction(); 3984 final int metaState = event.getMetaState(); 3985 switch (action) { 3986 case MotionEvent.ACTION_DOWN: 3987 mX.reset(2); 3988 mY.reset(2); 3989 enqueueInputEvent(new KeyEvent(curTime, curTime, 3990 KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 3991 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 3992 InputDevice.SOURCE_KEYBOARD)); 3993 break; 3994 case MotionEvent.ACTION_UP: 3995 mX.reset(2); 3996 mY.reset(2); 3997 enqueueInputEvent(new KeyEvent(curTime, curTime, 3998 KeyEvent.ACTION_UP, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 3999 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4000 InputDevice.SOURCE_KEYBOARD)); 4001 break; 4002 } 4003 4004 if (DEBUG_TRACKBALL) Log.v(TAG, "TB X=" + mX.position + " step=" 4005 + mX.step + " dir=" + mX.dir + " acc=" + mX.acceleration 4006 + " move=" + event.getX() 4007 + " / Y=" + mY.position + " step=" 4008 + mY.step + " dir=" + mY.dir + " acc=" + mY.acceleration 4009 + " move=" + event.getY()); 4010 final float xOff = mX.collect(event.getX(), event.getEventTime(), "X"); 4011 final float yOff = mY.collect(event.getY(), event.getEventTime(), "Y"); 4012 4013 // Generate DPAD events based on the trackball movement. 4014 // We pick the axis that has moved the most as the direction of 4015 // the DPAD. When we generate DPAD events for one axis, then the 4016 // other axis is reset -- we don't want to perform DPAD jumps due 4017 // to slight movements in the trackball when making major movements 4018 // along the other axis. 4019 int keycode = 0; 4020 int movement = 0; 4021 float accel = 1; 4022 if (xOff > yOff) { 4023 movement = mX.generate(); 4024 if (movement != 0) { 4025 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_RIGHT 4026 : KeyEvent.KEYCODE_DPAD_LEFT; 4027 accel = mX.acceleration; 4028 mY.reset(2); 4029 } 4030 } else if (yOff > 0) { 4031 movement = mY.generate(); 4032 if (movement != 0) { 4033 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_DOWN 4034 : KeyEvent.KEYCODE_DPAD_UP; 4035 accel = mY.acceleration; 4036 mX.reset(2); 4037 } 4038 } 4039 4040 if (keycode != 0) { 4041 if (movement < 0) movement = -movement; 4042 int accelMovement = (int)(movement * accel); 4043 if (DEBUG_TRACKBALL) Log.v(TAG, "Move: movement=" + movement 4044 + " accelMovement=" + accelMovement 4045 + " accel=" + accel); 4046 if (accelMovement > movement) { 4047 if (DEBUG_TRACKBALL) Log.v(TAG, "Delivering fake DPAD: " 4048 + keycode); 4049 movement--; 4050 int repeatCount = accelMovement - movement; 4051 enqueueInputEvent(new KeyEvent(curTime, curTime, 4052 KeyEvent.ACTION_MULTIPLE, keycode, repeatCount, metaState, 4053 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4054 InputDevice.SOURCE_KEYBOARD)); 4055 } 4056 while (movement > 0) { 4057 if (DEBUG_TRACKBALL) Log.v(TAG, "Delivering fake DPAD: " 4058 + keycode); 4059 movement--; 4060 curTime = SystemClock.uptimeMillis(); 4061 enqueueInputEvent(new KeyEvent(curTime, curTime, 4062 KeyEvent.ACTION_DOWN, keycode, 0, metaState, 4063 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4064 InputDevice.SOURCE_KEYBOARD)); 4065 enqueueInputEvent(new KeyEvent(curTime, curTime, 4066 KeyEvent.ACTION_UP, keycode, 0, metaState, 4067 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4068 InputDevice.SOURCE_KEYBOARD)); 4069 } 4070 mLastTime = curTime; 4071 } 4072 } 4073 4074 public void cancel(MotionEvent event) { 4075 mLastTime = Integer.MIN_VALUE; 4076 4077 // If we reach this, we consumed a trackball event. 4078 // Because we will not translate the trackball event into a key event, 4079 // touch mode will not exit, so we exit touch mode here. 4080 if (mView != null && mAdded) { 4081 ensureTouchMode(false); 4082 } 4083 } 4084 } 4085 4086 /** 4087 * Maintains state information for a single trackball axis, generating 4088 * discrete (DPAD) movements based on raw trackball motion. 4089 */ 4090 static final class TrackballAxis { 4091 /** 4092 * The maximum amount of acceleration we will apply. 4093 */ 4094 static final float MAX_ACCELERATION = 20; 4095 4096 /** 4097 * The maximum amount of time (in milliseconds) between events in order 4098 * for us to consider the user to be doing fast trackball movements, 4099 * and thus apply an acceleration. 4100 */ 4101 static final long FAST_MOVE_TIME = 150; 4102 4103 /** 4104 * Scaling factor to the time (in milliseconds) between events to how 4105 * much to multiple/divide the current acceleration. When movement 4106 * is < FAST_MOVE_TIME this multiplies the acceleration; when > 4107 * FAST_MOVE_TIME it divides it. 4108 */ 4109 static final float ACCEL_MOVE_SCALING_FACTOR = (1.0f/40); 4110 4111 static final float FIRST_MOVEMENT_THRESHOLD = 0.5f; 4112 static final float SECOND_CUMULATIVE_MOVEMENT_THRESHOLD = 2.0f; 4113 static final float SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD = 1.0f; 4114 4115 float position; 4116 float acceleration = 1; 4117 long lastMoveTime = 0; 4118 int step; 4119 int dir; 4120 int nonAccelMovement; 4121 4122 void reset(int _step) { 4123 position = 0; 4124 acceleration = 1; 4125 lastMoveTime = 0; 4126 step = _step; 4127 dir = 0; 4128 } 4129 4130 /** 4131 * Add trackball movement into the state. If the direction of movement 4132 * has been reversed, the state is reset before adding the 4133 * movement (so that you don't have to compensate for any previously 4134 * collected movement before see the result of the movement in the 4135 * new direction). 4136 * 4137 * @return Returns the absolute value of the amount of movement 4138 * collected so far. 4139 */ 4140 float collect(float off, long time, String axis) { 4141 long normTime; 4142 if (off > 0) { 4143 normTime = (long)(off * FAST_MOVE_TIME); 4144 if (dir < 0) { 4145 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to positive!"); 4146 position = 0; 4147 step = 0; 4148 acceleration = 1; 4149 lastMoveTime = 0; 4150 } 4151 dir = 1; 4152 } else if (off < 0) { 4153 normTime = (long)((-off) * FAST_MOVE_TIME); 4154 if (dir > 0) { 4155 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to negative!"); 4156 position = 0; 4157 step = 0; 4158 acceleration = 1; 4159 lastMoveTime = 0; 4160 } 4161 dir = -1; 4162 } else { 4163 normTime = 0; 4164 } 4165 4166 // The number of milliseconds between each movement that is 4167 // considered "normal" and will not result in any acceleration 4168 // or deceleration, scaled by the offset we have here. 4169 if (normTime > 0) { 4170 long delta = time - lastMoveTime; 4171 lastMoveTime = time; 4172 float acc = acceleration; 4173 if (delta < normTime) { 4174 // The user is scrolling rapidly, so increase acceleration. 4175 float scale = (normTime-delta) * ACCEL_MOVE_SCALING_FACTOR; 4176 if (scale > 1) acc *= scale; 4177 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " accelerate: off=" 4178 + off + " normTime=" + normTime + " delta=" + delta 4179 + " scale=" + scale + " acc=" + acc); 4180 acceleration = acc < MAX_ACCELERATION ? acc : MAX_ACCELERATION; 4181 } else { 4182 // The user is scrolling slowly, so decrease acceleration. 4183 float scale = (delta-normTime) * ACCEL_MOVE_SCALING_FACTOR; 4184 if (scale > 1) acc /= scale; 4185 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " deccelerate: off=" 4186 + off + " normTime=" + normTime + " delta=" + delta 4187 + " scale=" + scale + " acc=" + acc); 4188 acceleration = acc > 1 ? acc : 1; 4189 } 4190 } 4191 position += off; 4192 return Math.abs(position); 4193 } 4194 4195 /** 4196 * Generate the number of discrete movement events appropriate for 4197 * the currently collected trackball movement. 4198 * 4199 * @return Returns the number of discrete movements, either positive 4200 * or negative, or 0 if there is not enough trackball movement yet 4201 * for a discrete movement. 4202 */ 4203 int generate() { 4204 int movement = 0; 4205 nonAccelMovement = 0; 4206 do { 4207 final int dir = position >= 0 ? 1 : -1; 4208 switch (step) { 4209 // If we are going to execute the first step, then we want 4210 // to do this as soon as possible instead of waiting for 4211 // a full movement, in order to make things look responsive. 4212 case 0: 4213 if (Math.abs(position) < FIRST_MOVEMENT_THRESHOLD) { 4214 return movement; 4215 } 4216 movement += dir; 4217 nonAccelMovement += dir; 4218 step = 1; 4219 break; 4220 // If we have generated the first movement, then we need 4221 // to wait for the second complete trackball motion before 4222 // generating the second discrete movement. 4223 case 1: 4224 if (Math.abs(position) < SECOND_CUMULATIVE_MOVEMENT_THRESHOLD) { 4225 return movement; 4226 } 4227 movement += dir; 4228 nonAccelMovement += dir; 4229 position -= SECOND_CUMULATIVE_MOVEMENT_THRESHOLD * dir; 4230 step = 2; 4231 break; 4232 // After the first two, we generate discrete movements 4233 // consistently with the trackball, applying an acceleration 4234 // if the trackball is moving quickly. This is a simple 4235 // acceleration on top of what we already compute based 4236 // on how quickly the wheel is being turned, to apply 4237 // a longer increasing acceleration to continuous movement 4238 // in one direction. 4239 default: 4240 if (Math.abs(position) < SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD) { 4241 return movement; 4242 } 4243 movement += dir; 4244 position -= dir * SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD; 4245 float acc = acceleration; 4246 acc *= 1.1f; 4247 acceleration = acc < MAX_ACCELERATION ? acc : acceleration; 4248 break; 4249 } 4250 } while (true); 4251 } 4252 } 4253 4254 /** 4255 * Creates dpad events from unhandled joystick movements. 4256 */ 4257 final class SyntheticJoystickHandler extends Handler { 4258 private final static int MSG_ENQUEUE_X_AXIS_KEY_REPEAT = 1; 4259 private final static int MSG_ENQUEUE_Y_AXIS_KEY_REPEAT = 2; 4260 4261 private int mLastXDirection; 4262 private int mLastYDirection; 4263 private int mLastXKeyCode; 4264 private int mLastYKeyCode; 4265 4266 public SyntheticJoystickHandler() { 4267 super(true); 4268 } 4269 4270 @Override 4271 public void handleMessage(Message msg) { 4272 switch (msg.what) { 4273 case MSG_ENQUEUE_X_AXIS_KEY_REPEAT: 4274 case MSG_ENQUEUE_Y_AXIS_KEY_REPEAT: { 4275 KeyEvent oldEvent = (KeyEvent)msg.obj; 4276 KeyEvent e = KeyEvent.changeTimeRepeat(oldEvent, 4277 SystemClock.uptimeMillis(), 4278 oldEvent.getRepeatCount() + 1); 4279 if (mAttachInfo.mHasWindowFocus) { 4280 enqueueInputEvent(e); 4281 Message m = obtainMessage(msg.what, e); 4282 m.setAsynchronous(true); 4283 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatDelay()); 4284 } 4285 } break; 4286 } 4287 } 4288 4289 public void process(MotionEvent event) { 4290 update(event, true); 4291 } 4292 4293 public void cancel(MotionEvent event) { 4294 update(event, false); 4295 } 4296 4297 private void update(MotionEvent event, boolean synthesizeNewKeys) { 4298 final long time = event.getEventTime(); 4299 final int metaState = event.getMetaState(); 4300 final int deviceId = event.getDeviceId(); 4301 final int source = event.getSource(); 4302 4303 int xDirection = joystickAxisValueToDirection( 4304 event.getAxisValue(MotionEvent.AXIS_HAT_X)); 4305 if (xDirection == 0) { 4306 xDirection = joystickAxisValueToDirection(event.getX()); 4307 } 4308 4309 int yDirection = joystickAxisValueToDirection( 4310 event.getAxisValue(MotionEvent.AXIS_HAT_Y)); 4311 if (yDirection == 0) { 4312 yDirection = joystickAxisValueToDirection(event.getY()); 4313 } 4314 4315 if (xDirection != mLastXDirection) { 4316 if (mLastXKeyCode != 0) { 4317 removeMessages(MSG_ENQUEUE_X_AXIS_KEY_REPEAT); 4318 enqueueInputEvent(new KeyEvent(time, time, 4319 KeyEvent.ACTION_UP, mLastXKeyCode, 0, metaState, 4320 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4321 mLastXKeyCode = 0; 4322 } 4323 4324 mLastXDirection = xDirection; 4325 4326 if (xDirection != 0 && synthesizeNewKeys) { 4327 mLastXKeyCode = xDirection > 0 4328 ? KeyEvent.KEYCODE_DPAD_RIGHT : KeyEvent.KEYCODE_DPAD_LEFT; 4329 final KeyEvent e = new KeyEvent(time, time, 4330 KeyEvent.ACTION_DOWN, mLastXKeyCode, 0, metaState, 4331 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4332 enqueueInputEvent(e); 4333 Message m = obtainMessage(MSG_ENQUEUE_X_AXIS_KEY_REPEAT, e); 4334 m.setAsynchronous(true); 4335 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4336 } 4337 } 4338 4339 if (yDirection != mLastYDirection) { 4340 if (mLastYKeyCode != 0) { 4341 removeMessages(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT); 4342 enqueueInputEvent(new KeyEvent(time, time, 4343 KeyEvent.ACTION_UP, mLastYKeyCode, 0, metaState, 4344 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4345 mLastYKeyCode = 0; 4346 } 4347 4348 mLastYDirection = yDirection; 4349 4350 if (yDirection != 0 && synthesizeNewKeys) { 4351 mLastYKeyCode = yDirection > 0 4352 ? KeyEvent.KEYCODE_DPAD_DOWN : KeyEvent.KEYCODE_DPAD_UP; 4353 final KeyEvent e = new KeyEvent(time, time, 4354 KeyEvent.ACTION_DOWN, mLastYKeyCode, 0, metaState, 4355 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4356 enqueueInputEvent(e); 4357 Message m = obtainMessage(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT, e); 4358 m.setAsynchronous(true); 4359 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4360 } 4361 } 4362 } 4363 4364 private int joystickAxisValueToDirection(float value) { 4365 if (value >= 0.5f) { 4366 return 1; 4367 } else if (value <= -0.5f) { 4368 return -1; 4369 } else { 4370 return 0; 4371 } 4372 } 4373 } 4374 4375 /** 4376 * Creates dpad events from unhandled touch navigation movements. 4377 */ 4378 final class SyntheticTouchNavigationHandler extends Handler { 4379 private static final String LOCAL_TAG = "SyntheticTouchNavigationHandler"; 4380 private static final boolean LOCAL_DEBUG = false; 4381 4382 // Assumed nominal width and height in millimeters of a touch navigation pad, 4383 // if no resolution information is available from the input system. 4384 private static final float DEFAULT_WIDTH_MILLIMETERS = 48; 4385 private static final float DEFAULT_HEIGHT_MILLIMETERS = 48; 4386 4387 /* TODO: These constants should eventually be moved to ViewConfiguration. */ 4388 4389 // The nominal distance traveled to move by one unit. 4390 private static final int TICK_DISTANCE_MILLIMETERS = 12; 4391 4392 // Minimum and maximum fling velocity in ticks per second. 4393 // The minimum velocity should be set such that we perform enough ticks per 4394 // second that the fling appears to be fluid. For example, if we set the minimum 4395 // to 2 ticks per second, then there may be up to half a second delay between the next 4396 // to last and last ticks which is noticeably discrete and jerky. This value should 4397 // probably not be set to anything less than about 4. 4398 // If fling accuracy is a problem then consider tuning the tick distance instead. 4399 private static final float MIN_FLING_VELOCITY_TICKS_PER_SECOND = 6f; 4400 private static final float MAX_FLING_VELOCITY_TICKS_PER_SECOND = 20f; 4401 4402 // Fling velocity decay factor applied after each new key is emitted. 4403 // This parameter controls the deceleration and overall duration of the fling. 4404 // The fling stops automatically when its velocity drops below the minimum 4405 // fling velocity defined above. 4406 private static final float FLING_TICK_DECAY = 0.8f; 4407 4408 /* The input device that we are tracking. */ 4409 4410 private int mCurrentDeviceId = -1; 4411 private int mCurrentSource; 4412 private boolean mCurrentDeviceSupported; 4413 4414 /* Configuration for the current input device. */ 4415 4416 // The scaled tick distance. A movement of this amount should generally translate 4417 // into a single dpad event in a given direction. 4418 private float mConfigTickDistance; 4419 4420 // The minimum and maximum scaled fling velocity. 4421 private float mConfigMinFlingVelocity; 4422 private float mConfigMaxFlingVelocity; 4423 4424 /* Tracking state. */ 4425 4426 // The velocity tracker for detecting flings. 4427 private VelocityTracker mVelocityTracker; 4428 4429 // The active pointer id, or -1 if none. 4430 private int mActivePointerId = -1; 4431 4432 // Time and location where tracking started. 4433 private long mStartTime; 4434 private float mStartX; 4435 private float mStartY; 4436 4437 // Most recently observed position. 4438 private float mLastX; 4439 private float mLastY; 4440 4441 // Accumulated movement delta since the last direction key was sent. 4442 private float mAccumulatedX; 4443 private float mAccumulatedY; 4444 4445 // Set to true if any movement was delivered to the app. 4446 // Implies that tap slop was exceeded. 4447 private boolean mConsumedMovement; 4448 4449 // The most recently sent key down event. 4450 // The keycode remains set until the direction changes or a fling ends 4451 // so that repeated key events may be generated as required. 4452 private long mPendingKeyDownTime; 4453 private int mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 4454 private int mPendingKeyRepeatCount; 4455 private int mPendingKeyMetaState; 4456 4457 // The current fling velocity while a fling is in progress. 4458 private boolean mFlinging; 4459 private float mFlingVelocity; 4460 4461 // The last time a confirm key was pressed on the touch nav device 4462 private long mLastConfirmKeyTime = Long.MAX_VALUE; 4463 4464 public SyntheticTouchNavigationHandler() { 4465 super(true); 4466 } 4467 4468 public void process(MotionEvent event) { 4469 // Update the current device information. 4470 final long time = event.getEventTime(); 4471 final int deviceId = event.getDeviceId(); 4472 final int source = event.getSource(); 4473 if (mCurrentDeviceId != deviceId || mCurrentSource != source) { 4474 finishKeys(time); 4475 finishTracking(time); 4476 mCurrentDeviceId = deviceId; 4477 mCurrentSource = source; 4478 mCurrentDeviceSupported = false; 4479 InputDevice device = event.getDevice(); 4480 if (device != null) { 4481 // In order to support an input device, we must know certain 4482 // characteristics about it, such as its size and resolution. 4483 InputDevice.MotionRange xRange = device.getMotionRange(MotionEvent.AXIS_X); 4484 InputDevice.MotionRange yRange = device.getMotionRange(MotionEvent.AXIS_Y); 4485 if (xRange != null && yRange != null) { 4486 mCurrentDeviceSupported = true; 4487 4488 // Infer the resolution if it not actually known. 4489 float xRes = xRange.getResolution(); 4490 if (xRes <= 0) { 4491 xRes = xRange.getRange() / DEFAULT_WIDTH_MILLIMETERS; 4492 } 4493 float yRes = yRange.getResolution(); 4494 if (yRes <= 0) { 4495 yRes = yRange.getRange() / DEFAULT_HEIGHT_MILLIMETERS; 4496 } 4497 float nominalRes = (xRes + yRes) * 0.5f; 4498 4499 // Precompute all of the configuration thresholds we will need. 4500 mConfigTickDistance = TICK_DISTANCE_MILLIMETERS * nominalRes; 4501 mConfigMinFlingVelocity = 4502 MIN_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 4503 mConfigMaxFlingVelocity = 4504 MAX_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 4505 4506 if (LOCAL_DEBUG) { 4507 Log.d(LOCAL_TAG, "Configured device " + mCurrentDeviceId 4508 + " (" + Integer.toHexString(mCurrentSource) + "): " 4509 + ", mConfigTickDistance=" + mConfigTickDistance 4510 + ", mConfigMinFlingVelocity=" + mConfigMinFlingVelocity 4511 + ", mConfigMaxFlingVelocity=" + mConfigMaxFlingVelocity); 4512 } 4513 } 4514 } 4515 } 4516 if (!mCurrentDeviceSupported) { 4517 return; 4518 } 4519 4520 // Handle the event. 4521 final int action = event.getActionMasked(); 4522 switch (action) { 4523 case MotionEvent.ACTION_DOWN: { 4524 boolean caughtFling = mFlinging; 4525 finishKeys(time); 4526 finishTracking(time); 4527 mActivePointerId = event.getPointerId(0); 4528 mVelocityTracker = VelocityTracker.obtain(); 4529 mVelocityTracker.addMovement(event); 4530 mStartTime = time; 4531 mStartX = event.getX(); 4532 mStartY = event.getY(); 4533 mLastX = mStartX; 4534 mLastY = mStartY; 4535 mAccumulatedX = 0; 4536 mAccumulatedY = 0; 4537 4538 // If we caught a fling, then pretend that the tap slop has already 4539 // been exceeded to suppress taps whose only purpose is to stop the fling. 4540 mConsumedMovement = caughtFling; 4541 break; 4542 } 4543 4544 case MotionEvent.ACTION_MOVE: 4545 case MotionEvent.ACTION_UP: { 4546 if (mActivePointerId < 0) { 4547 break; 4548 } 4549 final int index = event.findPointerIndex(mActivePointerId); 4550 if (index < 0) { 4551 finishKeys(time); 4552 finishTracking(time); 4553 break; 4554 } 4555 4556 mVelocityTracker.addMovement(event); 4557 final float x = event.getX(index); 4558 final float y = event.getY(index); 4559 mAccumulatedX += x - mLastX; 4560 mAccumulatedY += y - mLastY; 4561 mLastX = x; 4562 mLastY = y; 4563 4564 // Consume any accumulated movement so far. 4565 final int metaState = event.getMetaState(); 4566 consumeAccumulatedMovement(time, metaState); 4567 4568 // Detect taps and flings. 4569 if (action == MotionEvent.ACTION_UP) { 4570 if (mConsumedMovement && mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 4571 // It might be a fling. 4572 mVelocityTracker.computeCurrentVelocity(1000, mConfigMaxFlingVelocity); 4573 final float vx = mVelocityTracker.getXVelocity(mActivePointerId); 4574 final float vy = mVelocityTracker.getYVelocity(mActivePointerId); 4575 if (!startFling(time, vx, vy)) { 4576 finishKeys(time); 4577 } 4578 } 4579 finishTracking(time); 4580 } 4581 break; 4582 } 4583 4584 case MotionEvent.ACTION_CANCEL: { 4585 finishKeys(time); 4586 finishTracking(time); 4587 break; 4588 } 4589 } 4590 } 4591 4592 public void cancel(MotionEvent event) { 4593 if (mCurrentDeviceId == event.getDeviceId() 4594 && mCurrentSource == event.getSource()) { 4595 final long time = event.getEventTime(); 4596 finishKeys(time); 4597 finishTracking(time); 4598 } 4599 } 4600 4601 private void finishKeys(long time) { 4602 cancelFling(); 4603 sendKeyUp(time); 4604 } 4605 4606 private void finishTracking(long time) { 4607 if (mActivePointerId >= 0) { 4608 mActivePointerId = -1; 4609 mVelocityTracker.recycle(); 4610 mVelocityTracker = null; 4611 } 4612 } 4613 4614 private void consumeAccumulatedMovement(long time, int metaState) { 4615 final float absX = Math.abs(mAccumulatedX); 4616 final float absY = Math.abs(mAccumulatedY); 4617 if (absX >= absY) { 4618 if (absX >= mConfigTickDistance) { 4619 mAccumulatedX = consumeAccumulatedMovement(time, metaState, mAccumulatedX, 4620 KeyEvent.KEYCODE_DPAD_LEFT, KeyEvent.KEYCODE_DPAD_RIGHT); 4621 mAccumulatedY = 0; 4622 mConsumedMovement = true; 4623 } 4624 } else { 4625 if (absY >= mConfigTickDistance) { 4626 mAccumulatedY = consumeAccumulatedMovement(time, metaState, mAccumulatedY, 4627 KeyEvent.KEYCODE_DPAD_UP, KeyEvent.KEYCODE_DPAD_DOWN); 4628 mAccumulatedX = 0; 4629 mConsumedMovement = true; 4630 } 4631 } 4632 } 4633 4634 private float consumeAccumulatedMovement(long time, int metaState, 4635 float accumulator, int negativeKeyCode, int positiveKeyCode) { 4636 while (accumulator <= -mConfigTickDistance) { 4637 sendKeyDownOrRepeat(time, negativeKeyCode, metaState); 4638 accumulator += mConfigTickDistance; 4639 } 4640 while (accumulator >= mConfigTickDistance) { 4641 sendKeyDownOrRepeat(time, positiveKeyCode, metaState); 4642 accumulator -= mConfigTickDistance; 4643 } 4644 return accumulator; 4645 } 4646 4647 private void sendKeyDownOrRepeat(long time, int keyCode, int metaState) { 4648 if (mPendingKeyCode != keyCode) { 4649 sendKeyUp(time); 4650 mPendingKeyDownTime = time; 4651 mPendingKeyCode = keyCode; 4652 mPendingKeyRepeatCount = 0; 4653 } else { 4654 mPendingKeyRepeatCount += 1; 4655 } 4656 mPendingKeyMetaState = metaState; 4657 4658 // Note: Normally we would pass FLAG_LONG_PRESS when the repeat count is 1 4659 // but it doesn't quite make sense when simulating the events in this way. 4660 if (LOCAL_DEBUG) { 4661 Log.d(LOCAL_TAG, "Sending key down: keyCode=" + mPendingKeyCode 4662 + ", repeatCount=" + mPendingKeyRepeatCount 4663 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 4664 } 4665 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 4666 KeyEvent.ACTION_DOWN, mPendingKeyCode, mPendingKeyRepeatCount, 4667 mPendingKeyMetaState, mCurrentDeviceId, 4668 KeyEvent.FLAG_FALLBACK, mCurrentSource)); 4669 } 4670 4671 private void sendKeyUp(long time) { 4672 if (mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 4673 if (LOCAL_DEBUG) { 4674 Log.d(LOCAL_TAG, "Sending key up: keyCode=" + mPendingKeyCode 4675 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 4676 } 4677 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 4678 KeyEvent.ACTION_UP, mPendingKeyCode, 0, mPendingKeyMetaState, 4679 mCurrentDeviceId, 0, KeyEvent.FLAG_FALLBACK, 4680 mCurrentSource)); 4681 mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 4682 } 4683 } 4684 4685 private boolean startFling(long time, float vx, float vy) { 4686 if (LOCAL_DEBUG) { 4687 Log.d(LOCAL_TAG, "Considering fling: vx=" + vx + ", vy=" + vy 4688 + ", min=" + mConfigMinFlingVelocity); 4689 } 4690 4691 // Flings must be oriented in the same direction as the preceding movements. 4692 switch (mPendingKeyCode) { 4693 case KeyEvent.KEYCODE_DPAD_LEFT: 4694 if (-vx >= mConfigMinFlingVelocity 4695 && Math.abs(vy) < mConfigMinFlingVelocity) { 4696 mFlingVelocity = -vx; 4697 break; 4698 } 4699 return false; 4700 4701 case KeyEvent.KEYCODE_DPAD_RIGHT: 4702 if (vx >= mConfigMinFlingVelocity 4703 && Math.abs(vy) < mConfigMinFlingVelocity) { 4704 mFlingVelocity = vx; 4705 break; 4706 } 4707 return false; 4708 4709 case KeyEvent.KEYCODE_DPAD_UP: 4710 if (-vy >= mConfigMinFlingVelocity 4711 && Math.abs(vx) < mConfigMinFlingVelocity) { 4712 mFlingVelocity = -vy; 4713 break; 4714 } 4715 return false; 4716 4717 case KeyEvent.KEYCODE_DPAD_DOWN: 4718 if (vy >= mConfigMinFlingVelocity 4719 && Math.abs(vx) < mConfigMinFlingVelocity) { 4720 mFlingVelocity = vy; 4721 break; 4722 } 4723 return false; 4724 } 4725 4726 // Post the first fling event. 4727 mFlinging = postFling(time); 4728 return mFlinging; 4729 } 4730 4731 private boolean postFling(long time) { 4732 // The idea here is to estimate the time when the pointer would have 4733 // traveled one tick distance unit given the current fling velocity. 4734 // This effect creates continuity of motion. 4735 if (mFlingVelocity >= mConfigMinFlingVelocity) { 4736 long delay = (long)(mConfigTickDistance / mFlingVelocity * 1000); 4737 postAtTime(mFlingRunnable, time + delay); 4738 if (LOCAL_DEBUG) { 4739 Log.d(LOCAL_TAG, "Posted fling: velocity=" 4740 + mFlingVelocity + ", delay=" + delay 4741 + ", keyCode=" + mPendingKeyCode); 4742 } 4743 return true; 4744 } 4745 return false; 4746 } 4747 4748 private void cancelFling() { 4749 if (mFlinging) { 4750 removeCallbacks(mFlingRunnable); 4751 mFlinging = false; 4752 } 4753 } 4754 4755 private final Runnable mFlingRunnable = new Runnable() { 4756 @Override 4757 public void run() { 4758 final long time = SystemClock.uptimeMillis(); 4759 sendKeyDownOrRepeat(time, mPendingKeyCode, mPendingKeyMetaState); 4760 mFlingVelocity *= FLING_TICK_DECAY; 4761 if (!postFling(time)) { 4762 mFlinging = false; 4763 finishKeys(time); 4764 } 4765 } 4766 }; 4767 } 4768 4769 final class SyntheticKeyHandler { 4770 4771 public boolean process(KeyEvent event) { 4772 // In some locales (like Japan) controllers use B for confirm and A for back, rather 4773 // than vice versa, so we need to special case this here since the input system itself 4774 // is not locale-aware. 4775 int keyCode; 4776 switch(event.getKeyCode()) { 4777 case KeyEvent.KEYCODE_BUTTON_A: 4778 case KeyEvent.KEYCODE_BUTTON_C: 4779 case KeyEvent.KEYCODE_BUTTON_X: 4780 case KeyEvent.KEYCODE_BUTTON_Z: 4781 keyCode = mFlipControllerFallbackKeys ? 4782 KeyEvent.KEYCODE_BACK : KeyEvent.KEYCODE_DPAD_CENTER; 4783 break; 4784 case KeyEvent.KEYCODE_BUTTON_B: 4785 case KeyEvent.KEYCODE_BUTTON_Y: 4786 keyCode = mFlipControllerFallbackKeys ? 4787 KeyEvent.KEYCODE_DPAD_CENTER : KeyEvent.KEYCODE_BACK; 4788 break; 4789 case KeyEvent.KEYCODE_BUTTON_THUMBL: 4790 case KeyEvent.KEYCODE_BUTTON_THUMBR: 4791 case KeyEvent.KEYCODE_BUTTON_START: 4792 case KeyEvent.KEYCODE_BUTTON_1: 4793 case KeyEvent.KEYCODE_BUTTON_2: 4794 case KeyEvent.KEYCODE_BUTTON_3: 4795 case KeyEvent.KEYCODE_BUTTON_4: 4796 case KeyEvent.KEYCODE_BUTTON_5: 4797 case KeyEvent.KEYCODE_BUTTON_6: 4798 case KeyEvent.KEYCODE_BUTTON_7: 4799 case KeyEvent.KEYCODE_BUTTON_8: 4800 case KeyEvent.KEYCODE_BUTTON_9: 4801 case KeyEvent.KEYCODE_BUTTON_10: 4802 case KeyEvent.KEYCODE_BUTTON_11: 4803 case KeyEvent.KEYCODE_BUTTON_12: 4804 case KeyEvent.KEYCODE_BUTTON_13: 4805 case KeyEvent.KEYCODE_BUTTON_14: 4806 case KeyEvent.KEYCODE_BUTTON_15: 4807 case KeyEvent.KEYCODE_BUTTON_16: 4808 keyCode = KeyEvent.KEYCODE_DPAD_CENTER; 4809 break; 4810 case KeyEvent.KEYCODE_BUTTON_SELECT: 4811 case KeyEvent.KEYCODE_BUTTON_MODE: 4812 keyCode = KeyEvent.KEYCODE_MENU; 4813 default: 4814 return false; 4815 } 4816 4817 enqueueInputEvent(new KeyEvent(event.getDownTime(), event.getEventTime(), 4818 event.getAction(), keyCode, event.getRepeatCount(), event.getMetaState(), 4819 event.getScanCode(), event.getFlags() | KeyEvent.FLAG_FALLBACK, 4820 event.getSource())); 4821 return true; 4822 } 4823 4824 } 4825 4826 /** 4827 * Returns true if the key is used for keyboard navigation. 4828 * @param keyEvent The key event. 4829 * @return True if the key is used for keyboard navigation. 4830 */ 4831 private static boolean isNavigationKey(KeyEvent keyEvent) { 4832 switch (keyEvent.getKeyCode()) { 4833 case KeyEvent.KEYCODE_DPAD_LEFT: 4834 case KeyEvent.KEYCODE_DPAD_RIGHT: 4835 case KeyEvent.KEYCODE_DPAD_UP: 4836 case KeyEvent.KEYCODE_DPAD_DOWN: 4837 case KeyEvent.KEYCODE_DPAD_CENTER: 4838 case KeyEvent.KEYCODE_PAGE_UP: 4839 case KeyEvent.KEYCODE_PAGE_DOWN: 4840 case KeyEvent.KEYCODE_MOVE_HOME: 4841 case KeyEvent.KEYCODE_MOVE_END: 4842 case KeyEvent.KEYCODE_TAB: 4843 case KeyEvent.KEYCODE_SPACE: 4844 case KeyEvent.KEYCODE_ENTER: 4845 return true; 4846 } 4847 return false; 4848 } 4849 4850 /** 4851 * Returns true if the key is used for typing. 4852 * @param keyEvent The key event. 4853 * @return True if the key is used for typing. 4854 */ 4855 private static boolean isTypingKey(KeyEvent keyEvent) { 4856 return keyEvent.getUnicodeChar() > 0; 4857 } 4858 4859 /** 4860 * See if the key event means we should leave touch mode (and leave touch mode if so). 4861 * @param event The key event. 4862 * @return Whether this key event should be consumed (meaning the act of 4863 * leaving touch mode alone is considered the event). 4864 */ 4865 private boolean checkForLeavingTouchModeAndConsume(KeyEvent event) { 4866 // Only relevant in touch mode. 4867 if (!mAttachInfo.mInTouchMode) { 4868 return false; 4869 } 4870 4871 // Only consider leaving touch mode on DOWN or MULTIPLE actions, never on UP. 4872 final int action = event.getAction(); 4873 if (action != KeyEvent.ACTION_DOWN && action != KeyEvent.ACTION_MULTIPLE) { 4874 return false; 4875 } 4876 4877 // Don't leave touch mode if the IME told us not to. 4878 if ((event.getFlags() & KeyEvent.FLAG_KEEP_TOUCH_MODE) != 0) { 4879 return false; 4880 } 4881 4882 // If the key can be used for keyboard navigation then leave touch mode 4883 // and select a focused view if needed (in ensureTouchMode). 4884 // When a new focused view is selected, we consume the navigation key because 4885 // navigation doesn't make much sense unless a view already has focus so 4886 // the key's purpose is to set focus. 4887 if (isNavigationKey(event)) { 4888 return ensureTouchMode(false); 4889 } 4890 4891 // If the key can be used for typing then leave touch mode 4892 // and select a focused view if needed (in ensureTouchMode). 4893 // Always allow the view to process the typing key. 4894 if (isTypingKey(event)) { 4895 ensureTouchMode(false); 4896 return false; 4897 } 4898 4899 return false; 4900 } 4901 4902 /* drag/drop */ 4903 void setLocalDragState(Object obj) { 4904 mLocalDragState = obj; 4905 } 4906 4907 private void handleDragEvent(DragEvent event) { 4908 // From the root, only drag start/end/location are dispatched. entered/exited 4909 // are determined and dispatched by the viewgroup hierarchy, who then report 4910 // that back here for ultimate reporting back to the framework. 4911 if (mView != null && mAdded) { 4912 final int what = event.mAction; 4913 4914 if (what == DragEvent.ACTION_DRAG_EXITED) { 4915 // A direct EXITED event means that the window manager knows we've just crossed 4916 // a window boundary, so the current drag target within this one must have 4917 // just been exited. Send it the usual notifications and then we're done 4918 // for now. 4919 mView.dispatchDragEvent(event); 4920 } else { 4921 // Cache the drag description when the operation starts, then fill it in 4922 // on subsequent calls as a convenience 4923 if (what == DragEvent.ACTION_DRAG_STARTED) { 4924 mCurrentDragView = null; // Start the current-recipient tracking 4925 mDragDescription = event.mClipDescription; 4926 } else { 4927 event.mClipDescription = mDragDescription; 4928 } 4929 4930 // For events with a [screen] location, translate into window coordinates 4931 if ((what == DragEvent.ACTION_DRAG_LOCATION) || (what == DragEvent.ACTION_DROP)) { 4932 mDragPoint.set(event.mX, event.mY); 4933 if (mTranslator != null) { 4934 mTranslator.translatePointInScreenToAppWindow(mDragPoint); 4935 } 4936 4937 if (mCurScrollY != 0) { 4938 mDragPoint.offset(0, mCurScrollY); 4939 } 4940 4941 event.mX = mDragPoint.x; 4942 event.mY = mDragPoint.y; 4943 } 4944 4945 // Remember who the current drag target is pre-dispatch 4946 final View prevDragView = mCurrentDragView; 4947 4948 // Now dispatch the drag/drop event 4949 boolean result = mView.dispatchDragEvent(event); 4950 4951 // If we changed apparent drag target, tell the OS about it 4952 if (prevDragView != mCurrentDragView) { 4953 try { 4954 if (prevDragView != null) { 4955 mWindowSession.dragRecipientExited(mWindow); 4956 } 4957 if (mCurrentDragView != null) { 4958 mWindowSession.dragRecipientEntered(mWindow); 4959 } 4960 } catch (RemoteException e) { 4961 Slog.e(TAG, "Unable to note drag target change"); 4962 } 4963 } 4964 4965 // Report the drop result when we're done 4966 if (what == DragEvent.ACTION_DROP) { 4967 mDragDescription = null; 4968 try { 4969 Log.i(TAG, "Reporting drop result: " + result); 4970 mWindowSession.reportDropResult(mWindow, result); 4971 } catch (RemoteException e) { 4972 Log.e(TAG, "Unable to report drop result"); 4973 } 4974 } 4975 4976 // When the drag operation ends, release any local state object 4977 // that may have been in use 4978 if (what == DragEvent.ACTION_DRAG_ENDED) { 4979 setLocalDragState(null); 4980 } 4981 } 4982 } 4983 event.recycle(); 4984 } 4985 4986 public void handleDispatchSystemUiVisibilityChanged(SystemUiVisibilityInfo args) { 4987 if (mSeq != args.seq) { 4988 // The sequence has changed, so we need to update our value and make 4989 // sure to do a traversal afterward so the window manager is given our 4990 // most recent data. 4991 mSeq = args.seq; 4992 mAttachInfo.mForceReportNewAttributes = true; 4993 scheduleTraversals(); 4994 } 4995 if (mView == null) return; 4996 if (args.localChanges != 0) { 4997 mView.updateLocalSystemUiVisibility(args.localValue, args.localChanges); 4998 } 4999 if (mAttachInfo != null) { 5000 int visibility = args.globalVisibility&View.SYSTEM_UI_CLEARABLE_FLAGS; 5001 if (visibility != mAttachInfo.mGlobalSystemUiVisibility) { 5002 mAttachInfo.mGlobalSystemUiVisibility = visibility; 5003 mView.dispatchSystemUiVisibilityChanged(visibility); 5004 } 5005 } 5006 } 5007 5008 public void handleDispatchDoneAnimating() { 5009 if (mWindowsAnimating) { 5010 mWindowsAnimating = false; 5011 if (!mDirty.isEmpty() || mIsAnimating || mFullRedrawNeeded) { 5012 scheduleTraversals(); 5013 } 5014 } 5015 } 5016 5017 public void getLastTouchPoint(Point outLocation) { 5018 outLocation.x = (int) mLastTouchPoint.x; 5019 outLocation.y = (int) mLastTouchPoint.y; 5020 } 5021 5022 public void setDragFocus(View newDragTarget) { 5023 if (mCurrentDragView != newDragTarget) { 5024 mCurrentDragView = newDragTarget; 5025 } 5026 } 5027 5028 private AudioManager getAudioManager() { 5029 if (mView == null) { 5030 throw new IllegalStateException("getAudioManager called when there is no mView"); 5031 } 5032 if (mAudioManager == null) { 5033 mAudioManager = (AudioManager) mView.getContext().getSystemService(Context.AUDIO_SERVICE); 5034 } 5035 return mAudioManager; 5036 } 5037 5038 public AccessibilityInteractionController getAccessibilityInteractionController() { 5039 if (mView == null) { 5040 throw new IllegalStateException("getAccessibilityInteractionController" 5041 + " called when there is no mView"); 5042 } 5043 if (mAccessibilityInteractionController == null) { 5044 mAccessibilityInteractionController = new AccessibilityInteractionController(this); 5045 } 5046 return mAccessibilityInteractionController; 5047 } 5048 5049 private int relayoutWindow(WindowManager.LayoutParams params, int viewVisibility, 5050 boolean insetsPending) throws RemoteException { 5051 5052 float appScale = mAttachInfo.mApplicationScale; 5053 boolean restore = false; 5054 if (params != null && mTranslator != null) { 5055 restore = true; 5056 params.backup(); 5057 mTranslator.translateWindowLayout(params); 5058 } 5059 if (params != null) { 5060 if (DBG) Log.d(TAG, "WindowLayout in layoutWindow:" + params); 5061 } 5062 mPendingConfiguration.seq = 0; 5063 //Log.d(TAG, ">>>>>> CALLING relayout"); 5064 if (params != null && mOrigWindowType != params.type) { 5065 // For compatibility with old apps, don't crash here. 5066 if (mTargetSdkVersion < android.os.Build.VERSION_CODES.ICE_CREAM_SANDWICH) { 5067 Slog.w(TAG, "Window type can not be changed after " 5068 + "the window is added; ignoring change of " + mView); 5069 params.type = mOrigWindowType; 5070 } 5071 } 5072 int relayoutResult = mWindowSession.relayout( 5073 mWindow, mSeq, params, 5074 (int) (mView.getMeasuredWidth() * appScale + 0.5f), 5075 (int) (mView.getMeasuredHeight() * appScale + 0.5f), 5076 viewVisibility, insetsPending ? WindowManagerGlobal.RELAYOUT_INSETS_PENDING : 0, 5077 mWinFrame, mPendingOverscanInsets, mPendingContentInsets, mPendingVisibleInsets, 5078 mPendingConfiguration, mSurface); 5079 //Log.d(TAG, "<<<<<< BACK FROM relayout"); 5080 if (restore) { 5081 params.restore(); 5082 } 5083 5084 if (mTranslator != null) { 5085 mTranslator.translateRectInScreenToAppWinFrame(mWinFrame); 5086 mTranslator.translateRectInScreenToAppWindow(mPendingOverscanInsets); 5087 mTranslator.translateRectInScreenToAppWindow(mPendingContentInsets); 5088 mTranslator.translateRectInScreenToAppWindow(mPendingVisibleInsets); 5089 } 5090 return relayoutResult; 5091 } 5092 5093 /** 5094 * {@inheritDoc} 5095 */ 5096 public void playSoundEffect(int effectId) { 5097 checkThread(); 5098 5099 if (mMediaDisabled) { 5100 return; 5101 } 5102 5103 try { 5104 final AudioManager audioManager = getAudioManager(); 5105 5106 switch (effectId) { 5107 case SoundEffectConstants.CLICK: 5108 audioManager.playSoundEffect(AudioManager.FX_KEY_CLICK); 5109 return; 5110 case SoundEffectConstants.NAVIGATION_DOWN: 5111 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_DOWN); 5112 return; 5113 case SoundEffectConstants.NAVIGATION_LEFT: 5114 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_LEFT); 5115 return; 5116 case SoundEffectConstants.NAVIGATION_RIGHT: 5117 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_RIGHT); 5118 return; 5119 case SoundEffectConstants.NAVIGATION_UP: 5120 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_UP); 5121 return; 5122 default: 5123 throw new IllegalArgumentException("unknown effect id " + effectId + 5124 " not defined in " + SoundEffectConstants.class.getCanonicalName()); 5125 } 5126 } catch (IllegalStateException e) { 5127 // Exception thrown by getAudioManager() when mView is null 5128 Log.e(TAG, "FATAL EXCEPTION when attempting to play sound effect: " + e); 5129 e.printStackTrace(); 5130 } 5131 } 5132 5133 /** 5134 * {@inheritDoc} 5135 */ 5136 public boolean performHapticFeedback(int effectId, boolean always) { 5137 try { 5138 return mWindowSession.performHapticFeedback(mWindow, effectId, always); 5139 } catch (RemoteException e) { 5140 return false; 5141 } 5142 } 5143 5144 /** 5145 * {@inheritDoc} 5146 */ 5147 public View focusSearch(View focused, int direction) { 5148 checkThread(); 5149 if (!(mView instanceof ViewGroup)) { 5150 return null; 5151 } 5152 return FocusFinder.getInstance().findNextFocus((ViewGroup) mView, focused, direction); 5153 } 5154 5155 public void debug() { 5156 mView.debug(); 5157 } 5158 5159 public void dumpGfxInfo(int[] info) { 5160 info[0] = info[1] = 0; 5161 if (mView != null) { 5162 getGfxInfo(mView, info); 5163 } 5164 } 5165 5166 private static void getGfxInfo(View view, int[] info) { 5167 DisplayList displayList = view.mDisplayList; 5168 info[0]++; 5169 if (displayList != null) { 5170 info[1] += displayList.getSize(); 5171 } 5172 5173 if (view instanceof ViewGroup) { 5174 ViewGroup group = (ViewGroup) view; 5175 5176 int count = group.getChildCount(); 5177 for (int i = 0; i < count; i++) { 5178 getGfxInfo(group.getChildAt(i), info); 5179 } 5180 } 5181 } 5182 5183 /** 5184 * @param immediate True, do now if not in traversal. False, put on queue and do later. 5185 * @return True, request has been queued. False, request has been completed. 5186 */ 5187 boolean die(boolean immediate) { 5188 // Make sure we do execute immediately if we are in the middle of a traversal or the damage 5189 // done by dispatchDetachedFromWindow will cause havoc on return. 5190 if (immediate && !mIsInTraversal) { 5191 doDie(); 5192 return false; 5193 } 5194 5195 if (!mIsDrawing) { 5196 destroyHardwareRenderer(); 5197 } else { 5198 Log.e(TAG, "Attempting to destroy the window while drawing!\n" + 5199 " window=" + this + ", title=" + mWindowAttributes.getTitle()); 5200 } 5201 mHandler.sendEmptyMessage(MSG_DIE); 5202 return true; 5203 } 5204 5205 void doDie() { 5206 checkThread(); 5207 if (LOCAL_LOGV) Log.v(TAG, "DIE in " + this + " of " + mSurface); 5208 synchronized (this) { 5209 if (mRemoved) { 5210 return; 5211 } 5212 mRemoved = true; 5213 if (mAdded) { 5214 dispatchDetachedFromWindow(); 5215 } 5216 5217 if (mAdded && !mFirst) { 5218 invalidateDisplayLists(); 5219 destroyHardwareRenderer(); 5220 5221 if (mView != null) { 5222 int viewVisibility = mView.getVisibility(); 5223 boolean viewVisibilityChanged = mViewVisibility != viewVisibility; 5224 if (mWindowAttributesChanged || viewVisibilityChanged) { 5225 // If layout params have been changed, first give them 5226 // to the window manager to make sure it has the correct 5227 // animation info. 5228 try { 5229 if ((relayoutWindow(mWindowAttributes, viewVisibility, false) 5230 & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 5231 mWindowSession.finishDrawing(mWindow); 5232 } 5233 } catch (RemoteException e) { 5234 } 5235 } 5236 5237 mSurface.release(); 5238 } 5239 } 5240 5241 mAdded = false; 5242 } 5243 WindowManagerGlobal.getInstance().doRemoveView(this); 5244 } 5245 5246 public void requestUpdateConfiguration(Configuration config) { 5247 Message msg = mHandler.obtainMessage(MSG_UPDATE_CONFIGURATION, config); 5248 mHandler.sendMessage(msg); 5249 } 5250 5251 public void loadSystemProperties() { 5252 mHandler.post(new Runnable() { 5253 @Override 5254 public void run() { 5255 // Profiling 5256 mProfileRendering = SystemProperties.getBoolean(PROPERTY_PROFILE_RENDERING, false); 5257 profileRendering(mAttachInfo.mHasWindowFocus); 5258 5259 // Media (used by sound effects) 5260 mMediaDisabled = SystemProperties.getBoolean(PROPERTY_MEDIA_DISABLED, false); 5261 5262 // Hardware rendering 5263 if (mAttachInfo.mHardwareRenderer != null) { 5264 if (mAttachInfo.mHardwareRenderer.loadSystemProperties(mHolder.getSurface())) { 5265 invalidate(); 5266 } 5267 } 5268 5269 // Layout debugging 5270 boolean layout = SystemProperties.getBoolean(View.DEBUG_LAYOUT_PROPERTY, false); 5271 if (layout != mAttachInfo.mDebugLayout) { 5272 mAttachInfo.mDebugLayout = layout; 5273 if (!mHandler.hasMessages(MSG_INVALIDATE_WORLD)) { 5274 mHandler.sendEmptyMessageDelayed(MSG_INVALIDATE_WORLD, 200); 5275 } 5276 } 5277 } 5278 }); 5279 } 5280 5281 private void destroyHardwareRenderer() { 5282 AttachInfo attachInfo = mAttachInfo; 5283 HardwareRenderer hardwareRenderer = attachInfo.mHardwareRenderer; 5284 5285 if (hardwareRenderer != null) { 5286 if (mView != null) { 5287 hardwareRenderer.destroyHardwareResources(mView); 5288 } 5289 hardwareRenderer.destroy(true); 5290 hardwareRenderer.setRequested(false); 5291 5292 attachInfo.mHardwareRenderer = null; 5293 attachInfo.mHardwareAccelerated = false; 5294 } 5295 } 5296 5297 public void dispatchFinishInputConnection(InputConnection connection) { 5298 Message msg = mHandler.obtainMessage(MSG_FINISH_INPUT_CONNECTION, connection); 5299 mHandler.sendMessage(msg); 5300 } 5301 5302 public void dispatchResized(Rect frame, Rect overscanInsets, Rect contentInsets, 5303 Rect visibleInsets, boolean reportDraw, Configuration newConfig) { 5304 if (DEBUG_LAYOUT) Log.v(TAG, "Resizing " + this + ": frame=" + frame.toShortString() 5305 + " contentInsets=" + contentInsets.toShortString() 5306 + " visibleInsets=" + visibleInsets.toShortString() 5307 + " reportDraw=" + reportDraw); 5308 Message msg = mHandler.obtainMessage(reportDraw ? MSG_RESIZED_REPORT : MSG_RESIZED); 5309 if (mTranslator != null) { 5310 mTranslator.translateRectInScreenToAppWindow(frame); 5311 mTranslator.translateRectInScreenToAppWindow(overscanInsets); 5312 mTranslator.translateRectInScreenToAppWindow(contentInsets); 5313 mTranslator.translateRectInScreenToAppWindow(visibleInsets); 5314 } 5315 SomeArgs args = SomeArgs.obtain(); 5316 final boolean sameProcessCall = (Binder.getCallingPid() == android.os.Process.myPid()); 5317 args.arg1 = sameProcessCall ? new Rect(frame) : frame; 5318 args.arg2 = sameProcessCall ? new Rect(contentInsets) : contentInsets; 5319 args.arg3 = sameProcessCall ? new Rect(visibleInsets) : visibleInsets; 5320 args.arg4 = sameProcessCall && newConfig != null ? new Configuration(newConfig) : newConfig; 5321 args.arg5 = sameProcessCall ? new Rect(overscanInsets) : overscanInsets; 5322 msg.obj = args; 5323 mHandler.sendMessage(msg); 5324 } 5325 5326 public void dispatchMoved(int newX, int newY) { 5327 if (DEBUG_LAYOUT) Log.v(TAG, "Window moved " + this + ": newX=" + newX + " newY=" + newY); 5328 if (mTranslator != null) { 5329 PointF point = new PointF(newX, newY); 5330 mTranslator.translatePointInScreenToAppWindow(point); 5331 newX = (int) (point.x + 0.5); 5332 newY = (int) (point.y + 0.5); 5333 } 5334 Message msg = mHandler.obtainMessage(MSG_WINDOW_MOVED, newX, newY); 5335 mHandler.sendMessage(msg); 5336 } 5337 5338 /** 5339 * Represents a pending input event that is waiting in a queue. 5340 * 5341 * Input events are processed in serial order by the timestamp specified by 5342 * {@link InputEvent#getEventTimeNano()}. In general, the input dispatcher delivers 5343 * one input event to the application at a time and waits for the application 5344 * to finish handling it before delivering the next one. 5345 * 5346 * However, because the application or IME can synthesize and inject multiple 5347 * key events at a time without going through the input dispatcher, we end up 5348 * needing a queue on the application's side. 5349 */ 5350 private static final class QueuedInputEvent { 5351 public static final int FLAG_DELIVER_POST_IME = 1 << 0; 5352 public static final int FLAG_DEFERRED = 1 << 1; 5353 public static final int FLAG_FINISHED = 1 << 2; 5354 public static final int FLAG_FINISHED_HANDLED = 1 << 3; 5355 public static final int FLAG_RESYNTHESIZED = 1 << 4; 5356 5357 public QueuedInputEvent mNext; 5358 5359 public InputEvent mEvent; 5360 public InputEventReceiver mReceiver; 5361 public int mFlags; 5362 5363 public boolean shouldSkipIme() { 5364 if ((mFlags & FLAG_DELIVER_POST_IME) != 0) { 5365 return true; 5366 } 5367 return mEvent instanceof MotionEvent 5368 && mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER); 5369 } 5370 } 5371 5372 private QueuedInputEvent obtainQueuedInputEvent(InputEvent event, 5373 InputEventReceiver receiver, int flags) { 5374 QueuedInputEvent q = mQueuedInputEventPool; 5375 if (q != null) { 5376 mQueuedInputEventPoolSize -= 1; 5377 mQueuedInputEventPool = q.mNext; 5378 q.mNext = null; 5379 } else { 5380 q = new QueuedInputEvent(); 5381 } 5382 5383 q.mEvent = event; 5384 q.mReceiver = receiver; 5385 q.mFlags = flags; 5386 return q; 5387 } 5388 5389 private void recycleQueuedInputEvent(QueuedInputEvent q) { 5390 q.mEvent = null; 5391 q.mReceiver = null; 5392 5393 if (mQueuedInputEventPoolSize < MAX_QUEUED_INPUT_EVENT_POOL_SIZE) { 5394 mQueuedInputEventPoolSize += 1; 5395 q.mNext = mQueuedInputEventPool; 5396 mQueuedInputEventPool = q; 5397 } 5398 } 5399 5400 void enqueueInputEvent(InputEvent event) { 5401 enqueueInputEvent(event, null, 0, false); 5402 } 5403 5404 void enqueueInputEvent(InputEvent event, 5405 InputEventReceiver receiver, int flags, boolean processImmediately) { 5406 QueuedInputEvent q = obtainQueuedInputEvent(event, receiver, flags); 5407 5408 // Always enqueue the input event in order, regardless of its time stamp. 5409 // We do this because the application or the IME may inject key events 5410 // in response to touch events and we want to ensure that the injected keys 5411 // are processed in the order they were received and we cannot trust that 5412 // the time stamp of injected events are monotonic. 5413 QueuedInputEvent last = mPendingInputEventTail; 5414 if (last == null) { 5415 mPendingInputEventHead = q; 5416 mPendingInputEventTail = q; 5417 } else { 5418 last.mNext = q; 5419 mPendingInputEventTail = q; 5420 } 5421 mPendingInputEventCount += 1; 5422 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 5423 mPendingInputEventCount); 5424 5425 if (processImmediately) { 5426 doProcessInputEvents(); 5427 } else { 5428 scheduleProcessInputEvents(); 5429 } 5430 } 5431 5432 private void scheduleProcessInputEvents() { 5433 if (!mProcessInputEventsScheduled) { 5434 mProcessInputEventsScheduled = true; 5435 Message msg = mHandler.obtainMessage(MSG_PROCESS_INPUT_EVENTS); 5436 msg.setAsynchronous(true); 5437 mHandler.sendMessage(msg); 5438 } 5439 } 5440 5441 void doProcessInputEvents() { 5442 // Deliver all pending input events in the queue. 5443 while (mPendingInputEventHead != null) { 5444 QueuedInputEvent q = mPendingInputEventHead; 5445 mPendingInputEventHead = q.mNext; 5446 if (mPendingInputEventHead == null) { 5447 mPendingInputEventTail = null; 5448 } 5449 q.mNext = null; 5450 5451 mPendingInputEventCount -= 1; 5452 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 5453 mPendingInputEventCount); 5454 5455 deliverInputEvent(q); 5456 } 5457 5458 // We are done processing all input events that we can process right now 5459 // so we can clear the pending flag immediately. 5460 if (mProcessInputEventsScheduled) { 5461 mProcessInputEventsScheduled = false; 5462 mHandler.removeMessages(MSG_PROCESS_INPUT_EVENTS); 5463 } 5464 } 5465 5466 private void deliverInputEvent(QueuedInputEvent q) { 5467 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "deliverInputEvent"); 5468 try { 5469 if (mInputEventConsistencyVerifier != null) { 5470 mInputEventConsistencyVerifier.onInputEvent(q.mEvent, 0); 5471 } 5472 5473 InputStage stage = q.shouldSkipIme() ? mFirstPostImeInputStage : mFirstInputStage; 5474 if (stage != null) { 5475 stage.deliver(q); 5476 } else { 5477 finishInputEvent(q); 5478 } 5479 } finally { 5480 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 5481 } 5482 } 5483 5484 private void finishInputEvent(QueuedInputEvent q) { 5485 if (q.mReceiver != null) { 5486 boolean handled = (q.mFlags & QueuedInputEvent.FLAG_FINISHED_HANDLED) != 0; 5487 q.mReceiver.finishInputEvent(q.mEvent, handled); 5488 } else { 5489 q.mEvent.recycleIfNeededAfterDispatch(); 5490 } 5491 5492 recycleQueuedInputEvent(q); 5493 } 5494 5495 static boolean isTerminalInputEvent(InputEvent event) { 5496 if (event instanceof KeyEvent) { 5497 final KeyEvent keyEvent = (KeyEvent)event; 5498 return keyEvent.getAction() == KeyEvent.ACTION_UP; 5499 } else { 5500 final MotionEvent motionEvent = (MotionEvent)event; 5501 final int action = motionEvent.getAction(); 5502 return action == MotionEvent.ACTION_UP 5503 || action == MotionEvent.ACTION_CANCEL 5504 || action == MotionEvent.ACTION_HOVER_EXIT; 5505 } 5506 } 5507 5508 void scheduleConsumeBatchedInput() { 5509 if (!mConsumeBatchedInputScheduled) { 5510 mConsumeBatchedInputScheduled = true; 5511 mChoreographer.postCallback(Choreographer.CALLBACK_INPUT, 5512 mConsumedBatchedInputRunnable, null); 5513 } 5514 } 5515 5516 void unscheduleConsumeBatchedInput() { 5517 if (mConsumeBatchedInputScheduled) { 5518 mConsumeBatchedInputScheduled = false; 5519 mChoreographer.removeCallbacks(Choreographer.CALLBACK_INPUT, 5520 mConsumedBatchedInputRunnable, null); 5521 } 5522 } 5523 5524 void doConsumeBatchedInput(long frameTimeNanos) { 5525 if (mConsumeBatchedInputScheduled) { 5526 mConsumeBatchedInputScheduled = false; 5527 if (mInputEventReceiver != null) { 5528 mInputEventReceiver.consumeBatchedInputEvents(frameTimeNanos); 5529 } 5530 doProcessInputEvents(); 5531 } 5532 } 5533 5534 final class TraversalRunnable implements Runnable { 5535 @Override 5536 public void run() { 5537 doTraversal(); 5538 } 5539 } 5540 final TraversalRunnable mTraversalRunnable = new TraversalRunnable(); 5541 5542 final class WindowInputEventReceiver extends InputEventReceiver { 5543 public WindowInputEventReceiver(InputChannel inputChannel, Looper looper) { 5544 super(inputChannel, looper); 5545 } 5546 5547 @Override 5548 public void onInputEvent(InputEvent event) { 5549 enqueueInputEvent(event, this, 0, true); 5550 } 5551 5552 @Override 5553 public void onBatchedInputEventPending() { 5554 scheduleConsumeBatchedInput(); 5555 } 5556 5557 @Override 5558 public void dispose() { 5559 unscheduleConsumeBatchedInput(); 5560 super.dispose(); 5561 } 5562 } 5563 WindowInputEventReceiver mInputEventReceiver; 5564 5565 final class ConsumeBatchedInputRunnable implements Runnable { 5566 @Override 5567 public void run() { 5568 doConsumeBatchedInput(mChoreographer.getFrameTimeNanos()); 5569 } 5570 } 5571 final ConsumeBatchedInputRunnable mConsumedBatchedInputRunnable = 5572 new ConsumeBatchedInputRunnable(); 5573 boolean mConsumeBatchedInputScheduled; 5574 5575 final class InvalidateOnAnimationRunnable implements Runnable { 5576 private boolean mPosted; 5577 private ArrayList<View> mViews = new ArrayList<View>(); 5578 private ArrayList<AttachInfo.InvalidateInfo> mViewRects = 5579 new ArrayList<AttachInfo.InvalidateInfo>(); 5580 private View[] mTempViews; 5581 private AttachInfo.InvalidateInfo[] mTempViewRects; 5582 5583 public void addView(View view) { 5584 synchronized (this) { 5585 mViews.add(view); 5586 postIfNeededLocked(); 5587 } 5588 } 5589 5590 public void addViewRect(AttachInfo.InvalidateInfo info) { 5591 synchronized (this) { 5592 mViewRects.add(info); 5593 postIfNeededLocked(); 5594 } 5595 } 5596 5597 public void removeView(View view) { 5598 synchronized (this) { 5599 mViews.remove(view); 5600 5601 for (int i = mViewRects.size(); i-- > 0; ) { 5602 AttachInfo.InvalidateInfo info = mViewRects.get(i); 5603 if (info.target == view) { 5604 mViewRects.remove(i); 5605 info.recycle(); 5606 } 5607 } 5608 5609 if (mPosted && mViews.isEmpty() && mViewRects.isEmpty()) { 5610 mChoreographer.removeCallbacks(Choreographer.CALLBACK_ANIMATION, this, null); 5611 mPosted = false; 5612 } 5613 } 5614 } 5615 5616 @Override 5617 public void run() { 5618 final int viewCount; 5619 final int viewRectCount; 5620 synchronized (this) { 5621 mPosted = false; 5622 5623 viewCount = mViews.size(); 5624 if (viewCount != 0) { 5625 mTempViews = mViews.toArray(mTempViews != null 5626 ? mTempViews : new View[viewCount]); 5627 mViews.clear(); 5628 } 5629 5630 viewRectCount = mViewRects.size(); 5631 if (viewRectCount != 0) { 5632 mTempViewRects = mViewRects.toArray(mTempViewRects != null 5633 ? mTempViewRects : new AttachInfo.InvalidateInfo[viewRectCount]); 5634 mViewRects.clear(); 5635 } 5636 } 5637 5638 for (int i = 0; i < viewCount; i++) { 5639 mTempViews[i].invalidate(); 5640 mTempViews[i] = null; 5641 } 5642 5643 for (int i = 0; i < viewRectCount; i++) { 5644 final View.AttachInfo.InvalidateInfo info = mTempViewRects[i]; 5645 info.target.invalidate(info.left, info.top, info.right, info.bottom); 5646 info.recycle(); 5647 } 5648 } 5649 5650 private void postIfNeededLocked() { 5651 if (!mPosted) { 5652 mChoreographer.postCallback(Choreographer.CALLBACK_ANIMATION, this, null); 5653 mPosted = true; 5654 } 5655 } 5656 } 5657 final InvalidateOnAnimationRunnable mInvalidateOnAnimationRunnable = 5658 new InvalidateOnAnimationRunnable(); 5659 5660 public void dispatchInvalidateDelayed(View view, long delayMilliseconds) { 5661 Message msg = mHandler.obtainMessage(MSG_INVALIDATE, view); 5662 mHandler.sendMessageDelayed(msg, delayMilliseconds); 5663 } 5664 5665 public void dispatchInvalidateRectDelayed(AttachInfo.InvalidateInfo info, 5666 long delayMilliseconds) { 5667 final Message msg = mHandler.obtainMessage(MSG_INVALIDATE_RECT, info); 5668 mHandler.sendMessageDelayed(msg, delayMilliseconds); 5669 } 5670 5671 public void dispatchInvalidateOnAnimation(View view) { 5672 mInvalidateOnAnimationRunnable.addView(view); 5673 } 5674 5675 public void dispatchInvalidateRectOnAnimation(AttachInfo.InvalidateInfo info) { 5676 mInvalidateOnAnimationRunnable.addViewRect(info); 5677 } 5678 5679 public void enqueueDisplayList(DisplayList displayList) { 5680 mDisplayLists.add(displayList); 5681 } 5682 5683 public void cancelInvalidate(View view) { 5684 mHandler.removeMessages(MSG_INVALIDATE, view); 5685 // fixme: might leak the AttachInfo.InvalidateInfo objects instead of returning 5686 // them to the pool 5687 mHandler.removeMessages(MSG_INVALIDATE_RECT, view); 5688 mInvalidateOnAnimationRunnable.removeView(view); 5689 } 5690 5691 public void dispatchInputEvent(InputEvent event) { 5692 Message msg = mHandler.obtainMessage(MSG_DISPATCH_INPUT_EVENT, event); 5693 msg.setAsynchronous(true); 5694 mHandler.sendMessage(msg); 5695 } 5696 5697 public void dispatchKeyFromIme(KeyEvent event) { 5698 Message msg = mHandler.obtainMessage(MSG_DISPATCH_KEY_FROM_IME, event); 5699 msg.setAsynchronous(true); 5700 mHandler.sendMessage(msg); 5701 } 5702 5703 public void dispatchUnhandledKey(KeyEvent event) { 5704 if ((event.getFlags() & KeyEvent.FLAG_FALLBACK) == 0) { 5705 final KeyCharacterMap kcm = event.getKeyCharacterMap(); 5706 final int keyCode = event.getKeyCode(); 5707 final int metaState = event.getMetaState(); 5708 5709 // Check for fallback actions specified by the key character map. 5710 KeyCharacterMap.FallbackAction fallbackAction = 5711 kcm.getFallbackAction(keyCode, metaState); 5712 if (fallbackAction != null) { 5713 final int flags = event.getFlags() | KeyEvent.FLAG_FALLBACK; 5714 KeyEvent fallbackEvent = KeyEvent.obtain( 5715 event.getDownTime(), event.getEventTime(), 5716 event.getAction(), fallbackAction.keyCode, 5717 event.getRepeatCount(), fallbackAction.metaState, 5718 event.getDeviceId(), event.getScanCode(), 5719 flags, event.getSource(), null); 5720 fallbackAction.recycle(); 5721 5722 dispatchInputEvent(fallbackEvent); 5723 } 5724 } 5725 } 5726 5727 public void dispatchAppVisibility(boolean visible) { 5728 Message msg = mHandler.obtainMessage(MSG_DISPATCH_APP_VISIBILITY); 5729 msg.arg1 = visible ? 1 : 0; 5730 mHandler.sendMessage(msg); 5731 } 5732 5733 public void dispatchScreenStateChange(boolean on) { 5734 Message msg = mHandler.obtainMessage(MSG_DISPATCH_SCREEN_STATE); 5735 msg.arg1 = on ? 1 : 0; 5736 mHandler.sendMessage(msg); 5737 } 5738 5739 public void dispatchGetNewSurface() { 5740 Message msg = mHandler.obtainMessage(MSG_DISPATCH_GET_NEW_SURFACE); 5741 mHandler.sendMessage(msg); 5742 } 5743 5744 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 5745 Message msg = Message.obtain(); 5746 msg.what = MSG_WINDOW_FOCUS_CHANGED; 5747 msg.arg1 = hasFocus ? 1 : 0; 5748 msg.arg2 = inTouchMode ? 1 : 0; 5749 mHandler.sendMessage(msg); 5750 } 5751 5752 public void dispatchCloseSystemDialogs(String reason) { 5753 Message msg = Message.obtain(); 5754 msg.what = MSG_CLOSE_SYSTEM_DIALOGS; 5755 msg.obj = reason; 5756 mHandler.sendMessage(msg); 5757 } 5758 5759 public void dispatchDragEvent(DragEvent event) { 5760 final int what; 5761 if (event.getAction() == DragEvent.ACTION_DRAG_LOCATION) { 5762 what = MSG_DISPATCH_DRAG_LOCATION_EVENT; 5763 mHandler.removeMessages(what); 5764 } else { 5765 what = MSG_DISPATCH_DRAG_EVENT; 5766 } 5767 Message msg = mHandler.obtainMessage(what, event); 5768 mHandler.sendMessage(msg); 5769 } 5770 5771 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 5772 int localValue, int localChanges) { 5773 SystemUiVisibilityInfo args = new SystemUiVisibilityInfo(); 5774 args.seq = seq; 5775 args.globalVisibility = globalVisibility; 5776 args.localValue = localValue; 5777 args.localChanges = localChanges; 5778 mHandler.sendMessage(mHandler.obtainMessage(MSG_DISPATCH_SYSTEM_UI_VISIBILITY, args)); 5779 } 5780 5781 public void dispatchDoneAnimating() { 5782 mHandler.sendEmptyMessage(MSG_DISPATCH_DONE_ANIMATING); 5783 } 5784 5785 public void dispatchCheckFocus() { 5786 if (!mHandler.hasMessages(MSG_CHECK_FOCUS)) { 5787 // This will result in a call to checkFocus() below. 5788 mHandler.sendEmptyMessage(MSG_CHECK_FOCUS); 5789 } 5790 } 5791 5792 /** 5793 * Post a callback to send a 5794 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 5795 * This event is send at most once every 5796 * {@link ViewConfiguration#getSendRecurringAccessibilityEventsInterval()}. 5797 */ 5798 private void postSendWindowContentChangedCallback(View source) { 5799 if (mSendWindowContentChangedAccessibilityEvent == null) { 5800 mSendWindowContentChangedAccessibilityEvent = 5801 new SendWindowContentChangedAccessibilityEvent(); 5802 } 5803 mSendWindowContentChangedAccessibilityEvent.runOrPost(source); 5804 } 5805 5806 /** 5807 * Remove a posted callback to send a 5808 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 5809 */ 5810 private void removeSendWindowContentChangedCallback() { 5811 if (mSendWindowContentChangedAccessibilityEvent != null) { 5812 mHandler.removeCallbacks(mSendWindowContentChangedAccessibilityEvent); 5813 } 5814 } 5815 5816 public boolean showContextMenuForChild(View originalView) { 5817 return false; 5818 } 5819 5820 public ActionMode startActionModeForChild(View originalView, ActionMode.Callback callback) { 5821 return null; 5822 } 5823 5824 public void createContextMenu(ContextMenu menu) { 5825 } 5826 5827 public void childDrawableStateChanged(View child) { 5828 } 5829 5830 public boolean requestSendAccessibilityEvent(View child, AccessibilityEvent event) { 5831 if (mView == null) { 5832 return false; 5833 } 5834 // Intercept accessibility focus events fired by virtual nodes to keep 5835 // track of accessibility focus position in such nodes. 5836 final int eventType = event.getEventType(); 5837 switch (eventType) { 5838 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUSED: { 5839 final long sourceNodeId = event.getSourceNodeId(); 5840 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 5841 sourceNodeId); 5842 View source = mView.findViewByAccessibilityId(accessibilityViewId); 5843 if (source != null) { 5844 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 5845 if (provider != null) { 5846 AccessibilityNodeInfo node = provider.createAccessibilityNodeInfo( 5847 AccessibilityNodeInfo.getVirtualDescendantId(sourceNodeId)); 5848 setAccessibilityFocus(source, node); 5849 } 5850 } 5851 } break; 5852 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUS_CLEARED: { 5853 final long sourceNodeId = event.getSourceNodeId(); 5854 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 5855 sourceNodeId); 5856 View source = mView.findViewByAccessibilityId(accessibilityViewId); 5857 if (source != null) { 5858 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 5859 if (provider != null) { 5860 setAccessibilityFocus(null, null); 5861 } 5862 } 5863 } break; 5864 } 5865 mAccessibilityManager.sendAccessibilityEvent(event); 5866 return true; 5867 } 5868 5869 @Override 5870 public void childAccessibilityStateChanged(View child) { 5871 postSendWindowContentChangedCallback(child); 5872 } 5873 5874 @Override 5875 public boolean canResolveLayoutDirection() { 5876 return true; 5877 } 5878 5879 @Override 5880 public boolean isLayoutDirectionResolved() { 5881 return true; 5882 } 5883 5884 @Override 5885 public int getLayoutDirection() { 5886 return View.LAYOUT_DIRECTION_RESOLVED_DEFAULT; 5887 } 5888 5889 @Override 5890 public boolean canResolveTextDirection() { 5891 return true; 5892 } 5893 5894 @Override 5895 public boolean isTextDirectionResolved() { 5896 return true; 5897 } 5898 5899 @Override 5900 public int getTextDirection() { 5901 return View.TEXT_DIRECTION_RESOLVED_DEFAULT; 5902 } 5903 5904 @Override 5905 public boolean canResolveTextAlignment() { 5906 return true; 5907 } 5908 5909 @Override 5910 public boolean isTextAlignmentResolved() { 5911 return true; 5912 } 5913 5914 @Override 5915 public int getTextAlignment() { 5916 return View.TEXT_ALIGNMENT_RESOLVED_DEFAULT; 5917 } 5918 5919 private View getCommonPredecessor(View first, View second) { 5920 if (mAttachInfo != null) { 5921 if (mTempHashSet == null) { 5922 mTempHashSet = new HashSet<View>(); 5923 } 5924 HashSet<View> seen = mTempHashSet; 5925 seen.clear(); 5926 View firstCurrent = first; 5927 while (firstCurrent != null) { 5928 seen.add(firstCurrent); 5929 ViewParent firstCurrentParent = firstCurrent.mParent; 5930 if (firstCurrentParent instanceof View) { 5931 firstCurrent = (View) firstCurrentParent; 5932 } else { 5933 firstCurrent = null; 5934 } 5935 } 5936 View secondCurrent = second; 5937 while (secondCurrent != null) { 5938 if (seen.contains(secondCurrent)) { 5939 seen.clear(); 5940 return secondCurrent; 5941 } 5942 ViewParent secondCurrentParent = secondCurrent.mParent; 5943 if (secondCurrentParent instanceof View) { 5944 secondCurrent = (View) secondCurrentParent; 5945 } else { 5946 secondCurrent = null; 5947 } 5948 } 5949 seen.clear(); 5950 } 5951 return null; 5952 } 5953 5954 void checkThread() { 5955 if (mThread != Thread.currentThread()) { 5956 throw new CalledFromWrongThreadException( 5957 "Only the original thread that created a view hierarchy can touch its views."); 5958 } 5959 } 5960 5961 public void requestDisallowInterceptTouchEvent(boolean disallowIntercept) { 5962 // ViewAncestor never intercepts touch event, so this can be a no-op 5963 } 5964 5965 public boolean requestChildRectangleOnScreen(View child, Rect rectangle, boolean immediate) { 5966 final boolean scrolled = scrollToRectOrFocus(rectangle, immediate); 5967 if (rectangle != null) { 5968 mTempRect.set(rectangle); 5969 mTempRect.offset(0, -mCurScrollY); 5970 mTempRect.offset(mAttachInfo.mWindowLeft, mAttachInfo.mWindowTop); 5971 try { 5972 mWindowSession.onRectangleOnScreenRequested(mWindow, mTempRect, immediate); 5973 } catch (RemoteException re) { 5974 /* ignore */ 5975 } 5976 } 5977 return scrolled; 5978 } 5979 5980 public void childHasTransientStateChanged(View child, boolean hasTransientState) { 5981 // Do nothing. 5982 } 5983 5984 void changeCanvasOpacity(boolean opaque) { 5985 // TODO(romainguy): recreate Canvas (software or hardware) to reflect the opacity change. 5986 Log.d(TAG, "changeCanvasOpacity: opaque=" + opaque); 5987 } 5988 5989 class TakenSurfaceHolder extends BaseSurfaceHolder { 5990 @Override 5991 public boolean onAllowLockCanvas() { 5992 return mDrawingAllowed; 5993 } 5994 5995 @Override 5996 public void onRelayoutContainer() { 5997 // Not currently interesting -- from changing between fixed and layout size. 5998 } 5999 6000 public void setFormat(int format) { 6001 ((RootViewSurfaceTaker)mView).setSurfaceFormat(format); 6002 } 6003 6004 public void setType(int type) { 6005 ((RootViewSurfaceTaker)mView).setSurfaceType(type); 6006 } 6007 6008 @Override 6009 public void onUpdateSurface() { 6010 // We take care of format and type changes on our own. 6011 throw new IllegalStateException("Shouldn't be here"); 6012 } 6013 6014 public boolean isCreating() { 6015 return mIsCreating; 6016 } 6017 6018 @Override 6019 public void setFixedSize(int width, int height) { 6020 throw new UnsupportedOperationException( 6021 "Currently only support sizing from layout"); 6022 } 6023 6024 public void setKeepScreenOn(boolean screenOn) { 6025 ((RootViewSurfaceTaker)mView).setSurfaceKeepScreenOn(screenOn); 6026 } 6027 } 6028 6029 static class W extends IWindow.Stub { 6030 private final WeakReference<ViewRootImpl> mViewAncestor; 6031 private final IWindowSession mWindowSession; 6032 6033 W(ViewRootImpl viewAncestor) { 6034 mViewAncestor = new WeakReference<ViewRootImpl>(viewAncestor); 6035 mWindowSession = viewAncestor.mWindowSession; 6036 } 6037 6038 public void resized(Rect frame, Rect overscanInsets, Rect contentInsets, 6039 Rect visibleInsets, boolean reportDraw, Configuration newConfig) { 6040 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6041 if (viewAncestor != null) { 6042 viewAncestor.dispatchResized(frame, overscanInsets, contentInsets, 6043 visibleInsets, reportDraw, newConfig); 6044 } 6045 } 6046 6047 @Override 6048 public void moved(int newX, int newY) { 6049 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6050 if (viewAncestor != null) { 6051 viewAncestor.dispatchMoved(newX, newY); 6052 } 6053 } 6054 6055 public void dispatchAppVisibility(boolean visible) { 6056 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6057 if (viewAncestor != null) { 6058 viewAncestor.dispatchAppVisibility(visible); 6059 } 6060 } 6061 6062 public void dispatchScreenState(boolean on) { 6063 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6064 if (viewAncestor != null) { 6065 viewAncestor.dispatchScreenStateChange(on); 6066 } 6067 } 6068 6069 public void dispatchGetNewSurface() { 6070 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6071 if (viewAncestor != null) { 6072 viewAncestor.dispatchGetNewSurface(); 6073 } 6074 } 6075 6076 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 6077 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6078 if (viewAncestor != null) { 6079 viewAncestor.windowFocusChanged(hasFocus, inTouchMode); 6080 } 6081 } 6082 6083 private static int checkCallingPermission(String permission) { 6084 try { 6085 return ActivityManagerNative.getDefault().checkPermission( 6086 permission, Binder.getCallingPid(), Binder.getCallingUid()); 6087 } catch (RemoteException e) { 6088 return PackageManager.PERMISSION_DENIED; 6089 } 6090 } 6091 6092 public void executeCommand(String command, String parameters, ParcelFileDescriptor out) { 6093 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6094 if (viewAncestor != null) { 6095 final View view = viewAncestor.mView; 6096 if (view != null) { 6097 if (checkCallingPermission(Manifest.permission.DUMP) != 6098 PackageManager.PERMISSION_GRANTED) { 6099 throw new SecurityException("Insufficient permissions to invoke" 6100 + " executeCommand() from pid=" + Binder.getCallingPid() 6101 + ", uid=" + Binder.getCallingUid()); 6102 } 6103 6104 OutputStream clientStream = null; 6105 try { 6106 clientStream = new ParcelFileDescriptor.AutoCloseOutputStream(out); 6107 ViewDebug.dispatchCommand(view, command, parameters, clientStream); 6108 } catch (IOException e) { 6109 e.printStackTrace(); 6110 } finally { 6111 if (clientStream != null) { 6112 try { 6113 clientStream.close(); 6114 } catch (IOException e) { 6115 e.printStackTrace(); 6116 } 6117 } 6118 } 6119 } 6120 } 6121 } 6122 6123 public void closeSystemDialogs(String reason) { 6124 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6125 if (viewAncestor != null) { 6126 viewAncestor.dispatchCloseSystemDialogs(reason); 6127 } 6128 } 6129 6130 public void dispatchWallpaperOffsets(float x, float y, float xStep, float yStep, 6131 boolean sync) { 6132 if (sync) { 6133 try { 6134 mWindowSession.wallpaperOffsetsComplete(asBinder()); 6135 } catch (RemoteException e) { 6136 } 6137 } 6138 } 6139 6140 public void dispatchWallpaperCommand(String action, int x, int y, 6141 int z, Bundle extras, boolean sync) { 6142 if (sync) { 6143 try { 6144 mWindowSession.wallpaperCommandComplete(asBinder(), null); 6145 } catch (RemoteException e) { 6146 } 6147 } 6148 } 6149 6150 /* Drag/drop */ 6151 public void dispatchDragEvent(DragEvent event) { 6152 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6153 if (viewAncestor != null) { 6154 viewAncestor.dispatchDragEvent(event); 6155 } 6156 } 6157 6158 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 6159 int localValue, int localChanges) { 6160 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6161 if (viewAncestor != null) { 6162 viewAncestor.dispatchSystemUiVisibilityChanged(seq, globalVisibility, 6163 localValue, localChanges); 6164 } 6165 } 6166 6167 public void doneAnimating() { 6168 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6169 if (viewAncestor != null) { 6170 viewAncestor.dispatchDoneAnimating(); 6171 } 6172 } 6173 } 6174 6175 public static final class CalledFromWrongThreadException extends AndroidRuntimeException { 6176 public CalledFromWrongThreadException(String msg) { 6177 super(msg); 6178 } 6179 } 6180 6181 private SurfaceHolder mHolder = new SurfaceHolder() { 6182 // we only need a SurfaceHolder for opengl. it would be nice 6183 // to implement everything else though, especially the callback 6184 // support (opengl doesn't make use of it right now, but eventually 6185 // will). 6186 public Surface getSurface() { 6187 return mSurface; 6188 } 6189 6190 public boolean isCreating() { 6191 return false; 6192 } 6193 6194 public void addCallback(Callback callback) { 6195 } 6196 6197 public void removeCallback(Callback callback) { 6198 } 6199 6200 public void setFixedSize(int width, int height) { 6201 } 6202 6203 public void setSizeFromLayout() { 6204 } 6205 6206 public void setFormat(int format) { 6207 } 6208 6209 public void setType(int type) { 6210 } 6211 6212 public void setKeepScreenOn(boolean screenOn) { 6213 } 6214 6215 public Canvas lockCanvas() { 6216 return null; 6217 } 6218 6219 public Canvas lockCanvas(Rect dirty) { 6220 return null; 6221 } 6222 6223 public void unlockCanvasAndPost(Canvas canvas) { 6224 } 6225 public Rect getSurfaceFrame() { 6226 return null; 6227 } 6228 }; 6229 6230 static RunQueue getRunQueue() { 6231 RunQueue rq = sRunQueues.get(); 6232 if (rq != null) { 6233 return rq; 6234 } 6235 rq = new RunQueue(); 6236 sRunQueues.set(rq); 6237 return rq; 6238 } 6239 6240 /** 6241 * The run queue is used to enqueue pending work from Views when no Handler is 6242 * attached. The work is executed during the next call to performTraversals on 6243 * the thread. 6244 * @hide 6245 */ 6246 static final class RunQueue { 6247 private final ArrayList<HandlerAction> mActions = new ArrayList<HandlerAction>(); 6248 6249 void post(Runnable action) { 6250 postDelayed(action, 0); 6251 } 6252 6253 void postDelayed(Runnable action, long delayMillis) { 6254 HandlerAction handlerAction = new HandlerAction(); 6255 handlerAction.action = action; 6256 handlerAction.delay = delayMillis; 6257 6258 synchronized (mActions) { 6259 mActions.add(handlerAction); 6260 } 6261 } 6262 6263 void removeCallbacks(Runnable action) { 6264 final HandlerAction handlerAction = new HandlerAction(); 6265 handlerAction.action = action; 6266 6267 synchronized (mActions) { 6268 final ArrayList<HandlerAction> actions = mActions; 6269 6270 while (actions.remove(handlerAction)) { 6271 // Keep going 6272 } 6273 } 6274 } 6275 6276 void executeActions(Handler handler) { 6277 synchronized (mActions) { 6278 final ArrayList<HandlerAction> actions = mActions; 6279 final int count = actions.size(); 6280 6281 for (int i = 0; i < count; i++) { 6282 final HandlerAction handlerAction = actions.get(i); 6283 handler.postDelayed(handlerAction.action, handlerAction.delay); 6284 } 6285 6286 actions.clear(); 6287 } 6288 } 6289 6290 private static class HandlerAction { 6291 Runnable action; 6292 long delay; 6293 6294 @Override 6295 public boolean equals(Object o) { 6296 if (this == o) return true; 6297 if (o == null || getClass() != o.getClass()) return false; 6298 6299 HandlerAction that = (HandlerAction) o; 6300 return !(action != null ? !action.equals(that.action) : that.action != null); 6301 6302 } 6303 6304 @Override 6305 public int hashCode() { 6306 int result = action != null ? action.hashCode() : 0; 6307 result = 31 * result + (int) (delay ^ (delay >>> 32)); 6308 return result; 6309 } 6310 } 6311 } 6312 6313 /** 6314 * Class for managing the accessibility interaction connection 6315 * based on the global accessibility state. 6316 */ 6317 final class AccessibilityInteractionConnectionManager 6318 implements AccessibilityStateChangeListener { 6319 public void onAccessibilityStateChanged(boolean enabled) { 6320 if (enabled) { 6321 ensureConnection(); 6322 if (mAttachInfo != null && mAttachInfo.mHasWindowFocus) { 6323 mView.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 6324 View focusedView = mView.findFocus(); 6325 if (focusedView != null && focusedView != mView) { 6326 focusedView.sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_FOCUSED); 6327 } 6328 } 6329 } else { 6330 ensureNoConnection(); 6331 mHandler.obtainMessage(MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST).sendToTarget(); 6332 } 6333 } 6334 6335 public void ensureConnection() { 6336 if (mAttachInfo != null) { 6337 final boolean registered = 6338 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED; 6339 if (!registered) { 6340 mAttachInfo.mAccessibilityWindowId = 6341 mAccessibilityManager.addAccessibilityInteractionConnection(mWindow, 6342 new AccessibilityInteractionConnection(ViewRootImpl.this)); 6343 } 6344 } 6345 } 6346 6347 public void ensureNoConnection() { 6348 final boolean registered = 6349 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED; 6350 if (registered) { 6351 mAttachInfo.mAccessibilityWindowId = AccessibilityNodeInfo.UNDEFINED; 6352 mAccessibilityManager.removeAccessibilityInteractionConnection(mWindow); 6353 } 6354 } 6355 } 6356 6357 /** 6358 * This class is an interface this ViewAncestor provides to the 6359 * AccessibilityManagerService to the latter can interact with 6360 * the view hierarchy in this ViewAncestor. 6361 */ 6362 static final class AccessibilityInteractionConnection 6363 extends IAccessibilityInteractionConnection.Stub { 6364 private final WeakReference<ViewRootImpl> mViewRootImpl; 6365 6366 AccessibilityInteractionConnection(ViewRootImpl viewRootImpl) { 6367 mViewRootImpl = new WeakReference<ViewRootImpl>(viewRootImpl); 6368 } 6369 6370 @Override 6371 public void findAccessibilityNodeInfoByAccessibilityId(long accessibilityNodeId, 6372 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 6373 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6374 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6375 if (viewRootImpl != null && viewRootImpl.mView != null) { 6376 viewRootImpl.getAccessibilityInteractionController() 6377 .findAccessibilityNodeInfoByAccessibilityIdClientThread(accessibilityNodeId, 6378 interactionId, callback, flags, interrogatingPid, interrogatingTid, 6379 spec); 6380 } else { 6381 // We cannot make the call and notify the caller so it does not wait. 6382 try { 6383 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 6384 } catch (RemoteException re) { 6385 /* best effort - ignore */ 6386 } 6387 } 6388 } 6389 6390 @Override 6391 public void performAccessibilityAction(long accessibilityNodeId, int action, 6392 Bundle arguments, int interactionId, 6393 IAccessibilityInteractionConnectionCallback callback, int flags, 6394 int interogatingPid, long interrogatingTid) { 6395 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6396 if (viewRootImpl != null && viewRootImpl.mView != null) { 6397 viewRootImpl.getAccessibilityInteractionController() 6398 .performAccessibilityActionClientThread(accessibilityNodeId, action, arguments, 6399 interactionId, callback, flags, interogatingPid, interrogatingTid); 6400 } else { 6401 // We cannot make the call and notify the caller so it does not wait. 6402 try { 6403 callback.setPerformAccessibilityActionResult(false, interactionId); 6404 } catch (RemoteException re) { 6405 /* best effort - ignore */ 6406 } 6407 } 6408 } 6409 6410 @Override 6411 public void findAccessibilityNodeInfosByViewId(long accessibilityNodeId, 6412 String viewId, int interactionId, 6413 IAccessibilityInteractionConnectionCallback callback, int flags, 6414 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6415 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6416 if (viewRootImpl != null && viewRootImpl.mView != null) { 6417 viewRootImpl.getAccessibilityInteractionController() 6418 .findAccessibilityNodeInfosByViewIdClientThread(accessibilityNodeId, 6419 viewId, interactionId, callback, flags, interrogatingPid, 6420 interrogatingTid, spec); 6421 } else { 6422 // We cannot make the call and notify the caller so it does not wait. 6423 try { 6424 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6425 } catch (RemoteException re) { 6426 /* best effort - ignore */ 6427 } 6428 } 6429 } 6430 6431 @Override 6432 public void findAccessibilityNodeInfosByText(long accessibilityNodeId, String text, 6433 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 6434 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6435 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6436 if (viewRootImpl != null && viewRootImpl.mView != null) { 6437 viewRootImpl.getAccessibilityInteractionController() 6438 .findAccessibilityNodeInfosByTextClientThread(accessibilityNodeId, text, 6439 interactionId, callback, flags, interrogatingPid, interrogatingTid, 6440 spec); 6441 } else { 6442 // We cannot make the call and notify the caller so it does not wait. 6443 try { 6444 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 6445 } catch (RemoteException re) { 6446 /* best effort - ignore */ 6447 } 6448 } 6449 } 6450 6451 @Override 6452 public void findFocus(long accessibilityNodeId, int focusType, int interactionId, 6453 IAccessibilityInteractionConnectionCallback callback, int flags, 6454 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6455 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6456 if (viewRootImpl != null && viewRootImpl.mView != null) { 6457 viewRootImpl.getAccessibilityInteractionController() 6458 .findFocusClientThread(accessibilityNodeId, focusType, interactionId, callback, 6459 flags, interrogatingPid, interrogatingTid, spec); 6460 } else { 6461 // We cannot make the call and notify the caller so it does not wait. 6462 try { 6463 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6464 } catch (RemoteException re) { 6465 /* best effort - ignore */ 6466 } 6467 } 6468 } 6469 6470 @Override 6471 public void focusSearch(long accessibilityNodeId, int direction, int interactionId, 6472 IAccessibilityInteractionConnectionCallback callback, int flags, 6473 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6474 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6475 if (viewRootImpl != null && viewRootImpl.mView != null) { 6476 viewRootImpl.getAccessibilityInteractionController() 6477 .focusSearchClientThread(accessibilityNodeId, direction, interactionId, 6478 callback, flags, interrogatingPid, interrogatingTid, spec); 6479 } else { 6480 // We cannot make the call and notify the caller so it does not wait. 6481 try { 6482 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6483 } catch (RemoteException re) { 6484 /* best effort - ignore */ 6485 } 6486 } 6487 } 6488 } 6489 6490 private class SendWindowContentChangedAccessibilityEvent implements Runnable { 6491 public View mSource; 6492 public long mLastEventTimeMillis; 6493 6494 public void run() { 6495 // The accessibility may be turned off while we were waiting so check again. 6496 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 6497 mLastEventTimeMillis = SystemClock.uptimeMillis(); 6498 AccessibilityEvent event = AccessibilityEvent.obtain(); 6499 event.setEventType(AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED); 6500 event.setContentChangeType(AccessibilityEvent.CONTENT_CHANGE_TYPE_SUBTREE); 6501 mSource.sendAccessibilityEventUnchecked(event); 6502 } else { 6503 mLastEventTimeMillis = 0; 6504 } 6505 // In any case reset to initial state. 6506 mSource.resetSubtreeAccessibilityStateChanged(); 6507 mSource = null; 6508 } 6509 6510 public void runOrPost(View source) { 6511 if (mSource != null) { 6512 // If there is no common predecessor, then mSource points to 6513 // a removed view, hence in this case always prefer the source. 6514 View predecessor = getCommonPredecessor(mSource, source); 6515 mSource = (predecessor != null) ? predecessor : source; 6516 return; 6517 } 6518 mSource = source; 6519 final long timeSinceLastMillis = SystemClock.uptimeMillis() - mLastEventTimeMillis; 6520 final long minEventIntevalMillis = 6521 ViewConfiguration.getSendRecurringAccessibilityEventsInterval(); 6522 if (timeSinceLastMillis >= minEventIntevalMillis) { 6523 mSource.removeCallbacks(this); 6524 run(); 6525 } else { 6526 mSource.postDelayed(this, minEventIntevalMillis - timeSinceLastMillis); 6527 } 6528 } 6529 } 6530} 6531