ViewRootImpl.java revision 64a12e177de64ae5d907e3020ea3f37cc96ee325
1/* 2 * Copyright (C) 2006 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.view; 18 19import android.Manifest; 20import android.animation.LayoutTransition; 21import android.app.ActivityManagerNative; 22import android.content.ClipDescription; 23import android.content.ComponentCallbacks; 24import android.content.ComponentCallbacks2; 25import android.content.Context; 26import android.content.pm.PackageManager; 27import android.content.res.CompatibilityInfo; 28import android.content.res.Configuration; 29import android.content.res.Resources; 30import android.graphics.Canvas; 31import android.graphics.Matrix; 32import android.graphics.Paint; 33import android.graphics.PixelFormat; 34import android.graphics.Point; 35import android.graphics.PointF; 36import android.graphics.PorterDuff; 37import android.graphics.Rect; 38import android.graphics.Region; 39import android.graphics.drawable.Drawable; 40import android.media.AudioManager; 41import android.os.Binder; 42import android.os.Bundle; 43import android.os.Debug; 44import android.os.Handler; 45import android.os.Looper; 46import android.os.Message; 47import android.os.ParcelFileDescriptor; 48import android.os.PowerManager; 49import android.os.Process; 50import android.os.RemoteException; 51import android.os.SystemClock; 52import android.os.SystemProperties; 53import android.os.Trace; 54import android.util.AndroidRuntimeException; 55import android.util.DisplayMetrics; 56import android.util.Log; 57import android.util.Slog; 58import android.util.TypedValue; 59import android.view.Surface.OutOfResourcesException; 60import android.view.View.AttachInfo; 61import android.view.View.MeasureSpec; 62import android.view.accessibility.AccessibilityEvent; 63import android.view.accessibility.AccessibilityManager; 64import android.view.accessibility.AccessibilityManager.AccessibilityStateChangeListener; 65import android.view.accessibility.AccessibilityNodeInfo; 66import android.view.accessibility.AccessibilityNodeProvider; 67import android.view.accessibility.IAccessibilityInteractionConnection; 68import android.view.accessibility.IAccessibilityInteractionConnectionCallback; 69import android.view.animation.AccelerateDecelerateInterpolator; 70import android.view.animation.Interpolator; 71import android.view.inputmethod.InputConnection; 72import android.view.inputmethod.InputMethodManager; 73import android.widget.Scroller; 74 75import com.android.internal.R; 76import com.android.internal.os.SomeArgs; 77import com.android.internal.policy.PolicyManager; 78import com.android.internal.view.BaseSurfaceHolder; 79import com.android.internal.view.RootViewSurfaceTaker; 80 81import java.io.FileDescriptor; 82import java.io.IOException; 83import java.io.OutputStream; 84import java.io.PrintWriter; 85import java.lang.ref.WeakReference; 86import java.util.ArrayList; 87import java.util.HashSet; 88 89/** 90 * The top of a view hierarchy, implementing the needed protocol between View 91 * and the WindowManager. This is for the most part an internal implementation 92 * detail of {@link WindowManagerGlobal}. 93 * 94 * {@hide} 95 */ 96@SuppressWarnings({"EmptyCatchBlock", "PointlessBooleanExpression"}) 97public final class ViewRootImpl implements ViewParent, 98 View.AttachInfo.Callbacks, HardwareRenderer.HardwareDrawCallbacks { 99 private static final String TAG = "ViewRootImpl"; 100 private static final boolean DBG = false; 101 private static final boolean LOCAL_LOGV = false; 102 /** @noinspection PointlessBooleanExpression*/ 103 private static final boolean DEBUG_DRAW = false || LOCAL_LOGV; 104 private static final boolean DEBUG_LAYOUT = false || LOCAL_LOGV; 105 private static final boolean DEBUG_DIALOG = false || LOCAL_LOGV; 106 private static final boolean DEBUG_INPUT_RESIZE = false || LOCAL_LOGV; 107 private static final boolean DEBUG_ORIENTATION = false || LOCAL_LOGV; 108 private static final boolean DEBUG_TRACKBALL = false || LOCAL_LOGV; 109 private static final boolean DEBUG_IMF = false || LOCAL_LOGV; 110 private static final boolean DEBUG_CONFIGURATION = false || LOCAL_LOGV; 111 private static final boolean DEBUG_FPS = false; 112 113 /** 114 * Set this system property to true to force the view hierarchy to render 115 * at 60 Hz. This can be used to measure the potential framerate. 116 */ 117 private static final String PROPERTY_PROFILE_RENDERING = "viewroot.profile_rendering"; 118 private static final String PROPERTY_MEDIA_DISABLED = "config.disable_media"; 119 120 /** 121 * Maximum time we allow the user to roll the trackball enough to generate 122 * a key event, before resetting the counters. 123 */ 124 static final int MAX_TRACKBALL_DELAY = 250; 125 126 static final ThreadLocal<RunQueue> sRunQueues = new ThreadLocal<RunQueue>(); 127 128 static final ArrayList<Runnable> sFirstDrawHandlers = new ArrayList<Runnable>(); 129 static boolean sFirstDrawComplete = false; 130 131 static final ArrayList<ComponentCallbacks> sConfigCallbacks 132 = new ArrayList<ComponentCallbacks>(); 133 134 final Context mContext; 135 final IWindowSession mWindowSession; 136 final Display mDisplay; 137 final String mBasePackageName; 138 139 final int[] mTmpLocation = new int[2]; 140 141 final TypedValue mTmpValue = new TypedValue(); 142 143 final Thread mThread; 144 145 final WindowLeaked mLocation; 146 147 final WindowManager.LayoutParams mWindowAttributes = new WindowManager.LayoutParams(); 148 149 final W mWindow; 150 151 final int mTargetSdkVersion; 152 153 int mSeq; 154 155 View mView; 156 157 View mAccessibilityFocusedHost; 158 AccessibilityNodeInfo mAccessibilityFocusedVirtualView; 159 160 int mViewVisibility; 161 boolean mAppVisible = true; 162 int mOrigWindowType = -1; 163 164 // Set to true if the owner of this window is in the stopped state, 165 // so the window should no longer be active. 166 boolean mStopped = false; 167 168 boolean mLastInCompatMode = false; 169 170 SurfaceHolder.Callback2 mSurfaceHolderCallback; 171 BaseSurfaceHolder mSurfaceHolder; 172 boolean mIsCreating; 173 boolean mDrawingAllowed; 174 175 final Region mTransparentRegion; 176 final Region mPreviousTransparentRegion; 177 178 int mWidth; 179 int mHeight; 180 Rect mDirty; 181 final Rect mCurrentDirty = new Rect(); 182 boolean mIsAnimating; 183 184 CompatibilityInfo.Translator mTranslator; 185 186 final View.AttachInfo mAttachInfo; 187 InputChannel mInputChannel; 188 InputQueue.Callback mInputQueueCallback; 189 InputQueue mInputQueue; 190 FallbackEventHandler mFallbackEventHandler; 191 Choreographer mChoreographer; 192 193 final Rect mTempRect; // used in the transaction to not thrash the heap. 194 final Rect mVisRect; // used to retrieve visible rect of focused view. 195 196 boolean mTraversalScheduled; 197 int mTraversalBarrier; 198 boolean mWillDrawSoon; 199 /** Set to true while in performTraversals for detecting when die(true) is called from internal 200 * callbacks such as onMeasure, onPreDraw, onDraw and deferring doDie() until later. */ 201 boolean mIsInTraversal; 202 boolean mFitSystemWindowsRequested; 203 boolean mLayoutRequested; 204 boolean mFirst; 205 boolean mReportNextDraw; 206 boolean mFullRedrawNeeded; 207 boolean mNewSurfaceNeeded; 208 boolean mHasHadWindowFocus; 209 boolean mLastWasImTarget; 210 boolean mWindowsAnimating; 211 boolean mDrawDuringWindowsAnimating; 212 boolean mIsDrawing; 213 int mLastSystemUiVisibility; 214 int mClientWindowLayoutFlags; 215 boolean mLastOverscanRequested; 216 217 // Pool of queued input events. 218 private static final int MAX_QUEUED_INPUT_EVENT_POOL_SIZE = 10; 219 private QueuedInputEvent mQueuedInputEventPool; 220 private int mQueuedInputEventPoolSize; 221 222 /* Input event queue. 223 * Pending input events are input events waiting to be delivered to the input stages 224 * and handled by the application. 225 */ 226 QueuedInputEvent mPendingInputEventHead; 227 QueuedInputEvent mPendingInputEventTail; 228 int mPendingInputEventCount; 229 boolean mProcessInputEventsScheduled; 230 String mPendingInputEventQueueLengthCounterName = "pq"; 231 232 InputStage mFirstInputStage; 233 InputStage mFirstPostImeInputStage; 234 235 boolean 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 // Used to block the creation of the ResizeBuffer due to invalidations in 271 // the previous DisplayList tree that must prevent re-execution. 272 // Currently this means a functor was detached. 273 boolean mBlockResizeBuffer; 274 static final Interpolator mResizeInterpolator = new AccelerateDecelerateInterpolator(); 275 private ArrayList<LayoutTransition> mPendingTransitions; 276 277 final ViewConfiguration mViewConfiguration; 278 279 /* Drag/drop */ 280 ClipDescription mDragDescription; 281 View mCurrentDragView; 282 volatile Object mLocalDragState; 283 final PointF mDragPoint = new PointF(); 284 final PointF mLastTouchPoint = new PointF(); 285 286 private boolean mProfileRendering; 287 private Choreographer.FrameCallback mRenderProfiler; 288 private boolean mRenderProfilingEnabled; 289 290 private boolean mMediaDisabled; 291 292 // Variables to track frames per second, enabled via DEBUG_FPS flag 293 private long mFpsStartTime = -1; 294 private long mFpsPrevTime = -1; 295 private int mFpsNumFrames; 296 297 /** 298 * see {@link #playSoundEffect(int)} 299 */ 300 AudioManager mAudioManager; 301 302 final AccessibilityManager mAccessibilityManager; 303 304 AccessibilityInteractionController mAccessibilityInteractionController; 305 306 AccessibilityInteractionConnectionManager mAccessibilityInteractionConnectionManager; 307 308 SendWindowContentChangedAccessibilityEvent mSendWindowContentChangedAccessibilityEvent; 309 310 HashSet<View> mTempHashSet; 311 312 private final int mDensity; 313 private final int mNoncompatDensity; 314 315 private boolean mInLayout = false; 316 ArrayList<View> mLayoutRequesters = new ArrayList<View>(); 317 boolean mHandlingLayoutInLayoutRequest = false; 318 319 private int mViewLayoutDirectionInitial; 320 321 /** Set to true once doDie() has been called. */ 322 private boolean mRemoved; 323 324 /** 325 * Consistency verifier for debugging purposes. 326 */ 327 protected final InputEventConsistencyVerifier mInputEventConsistencyVerifier = 328 InputEventConsistencyVerifier.isInstrumentationEnabled() ? 329 new InputEventConsistencyVerifier(this, 0) : null; 330 331 static final class SystemUiVisibilityInfo { 332 int seq; 333 int globalVisibility; 334 int localValue; 335 int localChanges; 336 } 337 338 public ViewRootImpl(Context context, Display display) { 339 mContext = context; 340 mWindowSession = WindowManagerGlobal.getWindowSession(); 341 mDisplay = display; 342 mBasePackageName = context.getBasePackageName(); 343 344 mDisplayAdjustments = display.getDisplayAdjustments(); 345 346 mThread = Thread.currentThread(); 347 mLocation = new WindowLeaked(null); 348 mLocation.fillInStackTrace(); 349 mWidth = -1; 350 mHeight = -1; 351 mDirty = new Rect(); 352 mTempRect = new Rect(); 353 mVisRect = new Rect(); 354 mWinFrame = new Rect(); 355 mWindow = new W(this); 356 mTargetSdkVersion = context.getApplicationInfo().targetSdkVersion; 357 mViewVisibility = View.GONE; 358 mTransparentRegion = new Region(); 359 mPreviousTransparentRegion = new Region(); 360 mFirst = true; // true for the first time the view is added 361 mAdded = false; 362 mAccessibilityManager = AccessibilityManager.getInstance(context); 363 mAccessibilityInteractionConnectionManager = 364 new AccessibilityInteractionConnectionManager(); 365 mAccessibilityManager.addAccessibilityStateChangeListener( 366 mAccessibilityInteractionConnectionManager); 367 mAttachInfo = new View.AttachInfo(mWindowSession, mWindow, display, this, mHandler, this); 368 mViewConfiguration = ViewConfiguration.get(context); 369 mDensity = context.getResources().getDisplayMetrics().densityDpi; 370 mNoncompatDensity = context.getResources().getDisplayMetrics().noncompatDensityDpi; 371 mFallbackEventHandler = PolicyManager.makeNewFallbackEventHandler(context); 372 mChoreographer = Choreographer.getInstance(); 373 374 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.privateFlags |= WindowManager.LayoutParams.PRIVATE_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 if (mAttachInfo.mHardwareRenderer != null) { 622 mAttachInfo.mHardwareRenderer.destroyHardwareResources(mView); 623 mAttachInfo.mHardwareRenderer.destroy(false); 624 } 625 } 626 627 void destroyHardwareLayers() { 628 if (mThread != Thread.currentThread()) { 629 if (mAttachInfo.mHardwareRenderer != null && 630 mAttachInfo.mHardwareRenderer.isEnabled()) { 631 HardwareRenderer.trimMemory(ComponentCallbacks2.TRIM_MEMORY_MODERATE); 632 } 633 } else { 634 destroyHardwareLayer(mView); 635 } 636 } 637 638 private static void destroyHardwareLayer(View view) { 639 view.destroyLayer(true); 640 641 if (view instanceof ViewGroup) { 642 ViewGroup group = (ViewGroup) view; 643 644 int count = group.getChildCount(); 645 for (int i = 0; i < count; i++) { 646 destroyHardwareLayer(group.getChildAt(i)); 647 } 648 } 649 } 650 651 void flushHardwareLayerUpdates() { 652 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled()) { 653 mAttachInfo.mHardwareRenderer.flushLayerUpdates(); 654 } 655 } 656 657 void dispatchFlushHardwareLayerUpdates() { 658 mHandler.removeMessages(MSG_FLUSH_LAYER_UPDATES); 659 mHandler.sendMessageAtFrontOfQueue(mHandler.obtainMessage(MSG_FLUSH_LAYER_UPDATES)); 660 } 661 662 public void attachFunctor(long functor) { 663 //noinspection SimplifiableIfStatement 664 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled()) { 665 mAttachInfo.mHardwareRenderer.attachFunctor(mAttachInfo, functor); 666 } 667 } 668 669 public void detachFunctor(long functor) { 670 mBlockResizeBuffer = true; 671 if (mAttachInfo.mHardwareRenderer != null) { 672 mAttachInfo.mHardwareRenderer.detachFunctor(functor); 673 } 674 } 675 676 private void enableHardwareAcceleration(WindowManager.LayoutParams attrs) { 677 mAttachInfo.mHardwareAccelerated = false; 678 mAttachInfo.mHardwareAccelerationRequested = false; 679 680 // Don't enable hardware acceleration when the application is in compatibility mode 681 if (false && mTranslator != null) return; 682 683 // Try to enable hardware acceleration if requested 684 final boolean hardwareAccelerated = 685 (attrs.flags & WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED) != 0; 686 687 if (true || hardwareAccelerated) { 688 if (!HardwareRenderer.isAvailable()) { 689 return; 690 } 691 692 // Persistent processes (including the system) should not do 693 // accelerated rendering on low-end devices. In that case, 694 // sRendererDisabled will be set. In addition, the system process 695 // itself should never do accelerated rendering. In that case, both 696 // sRendererDisabled and sSystemRendererDisabled are set. When 697 // sSystemRendererDisabled is set, PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED 698 // can be used by code on the system process to escape that and enable 699 // HW accelerated drawing. (This is basically for the lock screen.) 700 701 final boolean fakeHwAccelerated = (attrs.privateFlags & 702 WindowManager.LayoutParams.PRIVATE_FLAG_FAKE_HARDWARE_ACCELERATED) != 0; 703 final boolean forceHwAccelerated = (attrs.privateFlags & 704 WindowManager.LayoutParams.PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED) != 0; 705 706 if (!HardwareRenderer.sRendererDisabled || (HardwareRenderer.sSystemRendererDisabled 707 && forceHwAccelerated)) { 708 // Don't enable hardware acceleration when we're not on the main thread 709 if (!HardwareRenderer.sSystemRendererDisabled && 710 Looper.getMainLooper() != Looper.myLooper()) { 711 Log.w(HardwareRenderer.LOG_TAG, "Attempting to initialize hardware " 712 + "acceleration outside of the main thread, aborting"); 713 return; 714 } 715 716 if (mAttachInfo.mHardwareRenderer != null) { 717 mAttachInfo.mHardwareRenderer.destroy(true); 718 } 719 720 final boolean translucent = attrs.format != PixelFormat.OPAQUE; 721 mAttachInfo.mHardwareRenderer = HardwareRenderer.create(translucent); 722 if (mAttachInfo.mHardwareRenderer != null) { 723 mAttachInfo.mHardwareRenderer.setName(attrs.getTitle().toString()); 724 mAttachInfo.mHardwareAccelerated = 725 mAttachInfo.mHardwareAccelerationRequested = true; 726 } 727 } else if (fakeHwAccelerated) { 728 // The window had wanted to use hardware acceleration, but this 729 // is not allowed in its process. By setting this flag, it can 730 // still render as if it was accelerated. This is basically for 731 // the preview windows the window manager shows for launching 732 // applications, so they will look more like the app being launched. 733 mAttachInfo.mHardwareAccelerationRequested = true; 734 } 735 } 736 } 737 738 public View getView() { 739 return mView; 740 } 741 742 final WindowLeaked getLocation() { 743 return mLocation; 744 } 745 746 void setLayoutParams(WindowManager.LayoutParams attrs, boolean newView) { 747 synchronized (this) { 748 int oldSoftInputMode = mWindowAttributes.softInputMode; 749 // Keep track of the actual window flags supplied by the client. 750 mClientWindowLayoutFlags = attrs.flags; 751 // preserve compatible window flag if exists. 752 int compatibleWindowFlag = mWindowAttributes.privateFlags 753 & WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 754 // transfer over system UI visibility values as they carry current state. 755 attrs.systemUiVisibility = mWindowAttributes.systemUiVisibility; 756 attrs.subtreeSystemUiVisibility = mWindowAttributes.subtreeSystemUiVisibility; 757 mWindowAttributesChangesFlag = mWindowAttributes.copyFrom(attrs); 758 if ((mWindowAttributesChangesFlag 759 & WindowManager.LayoutParams.TRANSLUCENT_FLAGS_CHANGED) != 0) { 760 // Recompute system ui visibility. 761 mAttachInfo.mRecomputeGlobalAttributes = true; 762 } 763 if (mWindowAttributes.packageName == null) { 764 mWindowAttributes.packageName = mBasePackageName; 765 } 766 mWindowAttributes.privateFlags |= compatibleWindowFlag; 767 768 applyKeepScreenOnFlag(mWindowAttributes); 769 770 if (newView) { 771 mSoftInputMode = attrs.softInputMode; 772 requestLayout(); 773 } 774 // Don't lose the mode we last auto-computed. 775 if ((attrs.softInputMode&WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 776 == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 777 mWindowAttributes.softInputMode = (mWindowAttributes.softInputMode 778 & ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 779 | (oldSoftInputMode 780 & WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST); 781 } 782 mWindowAttributesChanged = true; 783 scheduleTraversals(); 784 } 785 } 786 787 void handleAppVisibility(boolean visible) { 788 if (mAppVisible != visible) { 789 mAppVisible = visible; 790 scheduleTraversals(); 791 } 792 } 793 794 void handleGetNewSurface() { 795 mNewSurfaceNeeded = true; 796 mFullRedrawNeeded = true; 797 scheduleTraversals(); 798 } 799 800 void handleScreenStateChange(boolean on) { 801 if (on != mAttachInfo.mScreenOn) { 802 mAttachInfo.mScreenOn = on; 803 if (mView != null) { 804 mView.dispatchScreenStateChanged(on ? View.SCREEN_STATE_ON : View.SCREEN_STATE_OFF); 805 } 806 if (on) { 807 mFullRedrawNeeded = true; 808 scheduleTraversals(); 809 } 810 } 811 } 812 813 @Override 814 public void requestFitSystemWindows() { 815 checkThread(); 816 mFitSystemWindowsRequested = true; 817 scheduleTraversals(); 818 } 819 820 @Override 821 public void requestLayout() { 822 if (!mHandlingLayoutInLayoutRequest) { 823 checkThread(); 824 mLayoutRequested = true; 825 scheduleTraversals(); 826 } 827 } 828 829 @Override 830 public boolean isLayoutRequested() { 831 return mLayoutRequested; 832 } 833 834 void invalidate() { 835 mDirty.set(0, 0, mWidth, mHeight); 836 scheduleTraversals(); 837 } 838 839 void invalidateWorld(View view) { 840 view.invalidate(); 841 if (view instanceof ViewGroup) { 842 ViewGroup parent = (ViewGroup) view; 843 for (int i = 0; i < parent.getChildCount(); i++) { 844 invalidateWorld(parent.getChildAt(i)); 845 } 846 } 847 } 848 849 @Override 850 public void invalidateChild(View child, Rect dirty) { 851 invalidateChildInParent(null, dirty); 852 } 853 854 @Override 855 public ViewParent invalidateChildInParent(int[] location, Rect dirty) { 856 checkThread(); 857 if (DEBUG_DRAW) Log.v(TAG, "Invalidate child: " + dirty); 858 859 if (dirty == null) { 860 invalidate(); 861 return null; 862 } else if (dirty.isEmpty() && !mIsAnimating) { 863 return null; 864 } 865 866 if (mCurScrollY != 0 || mTranslator != null) { 867 mTempRect.set(dirty); 868 dirty = mTempRect; 869 if (mCurScrollY != 0) { 870 dirty.offset(0, -mCurScrollY); 871 } 872 if (mTranslator != null) { 873 mTranslator.translateRectInAppWindowToScreen(dirty); 874 } 875 if (mAttachInfo.mScalingRequired) { 876 dirty.inset(-1, -1); 877 } 878 } 879 880 final Rect localDirty = mDirty; 881 if (!localDirty.isEmpty() && !localDirty.contains(dirty)) { 882 mAttachInfo.mSetIgnoreDirtyState = true; 883 mAttachInfo.mIgnoreDirtyState = true; 884 } 885 886 // Add the new dirty rect to the current one 887 localDirty.union(dirty.left, dirty.top, dirty.right, dirty.bottom); 888 // Intersect with the bounds of the window to skip 889 // updates that lie outside of the visible region 890 final float appScale = mAttachInfo.mApplicationScale; 891 final boolean intersected = localDirty.intersect(0, 0, 892 (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 893 if (!intersected) { 894 localDirty.setEmpty(); 895 } 896 if (!mWillDrawSoon && (intersected || mIsAnimating)) { 897 scheduleTraversals(); 898 } 899 900 return null; 901 } 902 903 void setStopped(boolean stopped) { 904 if (mStopped != stopped) { 905 mStopped = stopped; 906 if (!stopped) { 907 scheduleTraversals(); 908 } 909 } 910 } 911 912 @Override 913 public ViewParent getParent() { 914 return null; 915 } 916 917 @Override 918 public boolean getChildVisibleRect(View child, Rect r, android.graphics.Point offset) { 919 if (child != mView) { 920 throw new RuntimeException("child is not mine, honest!"); 921 } 922 // Note: don't apply scroll offset, because we want to know its 923 // visibility in the virtual canvas being given to the view hierarchy. 924 return r.intersect(0, 0, mWidth, mHeight); 925 } 926 927 @Override 928 public void bringChildToFront(View child) { 929 } 930 931 int getHostVisibility() { 932 return mAppVisible ? mView.getVisibility() : View.GONE; 933 } 934 935 void disposeResizeBuffer() { 936 if (mResizeBuffer != null) { 937 mResizeBuffer.destroy(); 938 mResizeBuffer = null; 939 } 940 } 941 942 /** 943 * Add LayoutTransition to the list of transitions to be started in the next traversal. 944 * This list will be cleared after the transitions on the list are start()'ed. These 945 * transitionsa re added by LayoutTransition itself when it sets up animations. The setup 946 * happens during the layout phase of traversal, which we want to complete before any of the 947 * animations are started (because those animations may side-effect properties that layout 948 * depends upon, like the bounding rectangles of the affected views). So we add the transition 949 * to the list and it is started just prior to starting the drawing phase of traversal. 950 * 951 * @param transition The LayoutTransition to be started on the next traversal. 952 * 953 * @hide 954 */ 955 public void requestTransitionStart(LayoutTransition transition) { 956 if (mPendingTransitions == null || !mPendingTransitions.contains(transition)) { 957 if (mPendingTransitions == null) { 958 mPendingTransitions = new ArrayList<LayoutTransition>(); 959 } 960 mPendingTransitions.add(transition); 961 } 962 } 963 964 void scheduleTraversals() { 965 if (!mTraversalScheduled) { 966 mTraversalScheduled = true; 967 mTraversalBarrier = mHandler.getLooper().postSyncBarrier(); 968 mChoreographer.postCallback( 969 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 970 scheduleConsumeBatchedInput(); 971 } 972 } 973 974 void unscheduleTraversals() { 975 if (mTraversalScheduled) { 976 mTraversalScheduled = false; 977 mHandler.getLooper().removeSyncBarrier(mTraversalBarrier); 978 mChoreographer.removeCallbacks( 979 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 980 } 981 } 982 983 void doTraversal() { 984 if (mTraversalScheduled) { 985 mTraversalScheduled = false; 986 mHandler.getLooper().removeSyncBarrier(mTraversalBarrier); 987 988 if (mProfile) { 989 Debug.startMethodTracing("ViewAncestor"); 990 } 991 992 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "performTraversals"); 993 try { 994 performTraversals(); 995 } finally { 996 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 997 } 998 999 if (mProfile) { 1000 Debug.stopMethodTracing(); 1001 mProfile = false; 1002 } 1003 } 1004 } 1005 1006 private void applyKeepScreenOnFlag(WindowManager.LayoutParams params) { 1007 // Update window's global keep screen on flag: if a view has requested 1008 // that the screen be kept on, then it is always set; otherwise, it is 1009 // set to whatever the client last requested for the global state. 1010 if (mAttachInfo.mKeepScreenOn) { 1011 params.flags |= WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON; 1012 } else { 1013 params.flags = (params.flags&~WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON) 1014 | (mClientWindowLayoutFlags&WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 1015 } 1016 } 1017 1018 private boolean collectViewAttributes() { 1019 final View.AttachInfo attachInfo = mAttachInfo; 1020 if (attachInfo.mRecomputeGlobalAttributes) { 1021 //Log.i(TAG, "Computing view hierarchy attributes!"); 1022 attachInfo.mRecomputeGlobalAttributes = false; 1023 boolean oldScreenOn = attachInfo.mKeepScreenOn; 1024 attachInfo.mKeepScreenOn = false; 1025 attachInfo.mSystemUiVisibility = 0; 1026 attachInfo.mHasSystemUiListeners = false; 1027 mView.dispatchCollectViewAttributes(attachInfo, 0); 1028 attachInfo.mSystemUiVisibility &= ~attachInfo.mDisabledSystemUiVisibility; 1029 WindowManager.LayoutParams params = mWindowAttributes; 1030 attachInfo.mSystemUiVisibility |= getImpliedSystemUiVisibility(params); 1031 if (attachInfo.mKeepScreenOn != oldScreenOn 1032 || attachInfo.mSystemUiVisibility != params.subtreeSystemUiVisibility 1033 || attachInfo.mHasSystemUiListeners != params.hasSystemUiListeners) { 1034 applyKeepScreenOnFlag(params); 1035 params.subtreeSystemUiVisibility = attachInfo.mSystemUiVisibility; 1036 params.hasSystemUiListeners = attachInfo.mHasSystemUiListeners; 1037 mView.dispatchWindowSystemUiVisiblityChanged(attachInfo.mSystemUiVisibility); 1038 return true; 1039 } 1040 } 1041 return false; 1042 } 1043 1044 private int getImpliedSystemUiVisibility(WindowManager.LayoutParams params) { 1045 int vis = 0; 1046 // Translucent decor window flags imply stable system ui visibility. 1047 if ((params.flags & WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS) != 0) { 1048 vis |= View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN; 1049 } 1050 if ((params.flags & WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION) != 0) { 1051 vis |= View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION; 1052 } 1053 return vis; 1054 } 1055 1056 private boolean measureHierarchy(final View host, final WindowManager.LayoutParams lp, 1057 final Resources res, final int desiredWindowWidth, final int desiredWindowHeight) { 1058 int childWidthMeasureSpec; 1059 int childHeightMeasureSpec; 1060 boolean windowSizeMayChange = false; 1061 1062 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) Log.v(TAG, 1063 "Measuring " + host + " in display " + desiredWindowWidth 1064 + "x" + desiredWindowHeight + "..."); 1065 1066 boolean goodMeasure = false; 1067 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT) { 1068 // On large screens, we don't want to allow dialogs to just 1069 // stretch to fill the entire width of the screen to display 1070 // one line of text. First try doing the layout at a smaller 1071 // size to see if it will fit. 1072 final DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1073 res.getValue(com.android.internal.R.dimen.config_prefDialogWidth, mTmpValue, true); 1074 int baseSize = 0; 1075 if (mTmpValue.type == TypedValue.TYPE_DIMENSION) { 1076 baseSize = (int)mTmpValue.getDimension(packageMetrics); 1077 } 1078 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": baseSize=" + baseSize); 1079 if (baseSize != 0 && desiredWindowWidth > baseSize) { 1080 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1081 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1082 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1083 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": measured (" 1084 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1085 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1086 goodMeasure = true; 1087 } else { 1088 // Didn't fit in that size... try expanding a bit. 1089 baseSize = (baseSize+desiredWindowWidth)/2; 1090 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": next baseSize=" 1091 + baseSize); 1092 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1093 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1094 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": measured (" 1095 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1096 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1097 if (DEBUG_DIALOG) Log.v(TAG, "Good!"); 1098 goodMeasure = true; 1099 } 1100 } 1101 } 1102 } 1103 1104 if (!goodMeasure) { 1105 childWidthMeasureSpec = getRootMeasureSpec(desiredWindowWidth, lp.width); 1106 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1107 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1108 if (mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) { 1109 windowSizeMayChange = true; 1110 } 1111 } 1112 1113 if (DBG) { 1114 System.out.println("======================================"); 1115 System.out.println("performTraversals -- after measure"); 1116 host.debug(); 1117 } 1118 1119 return windowSizeMayChange; 1120 } 1121 1122 /** 1123 * Modifies the input matrix such that it maps view-local coordinates to 1124 * on-screen coordinates. 1125 * 1126 * @param m input matrix to modify 1127 */ 1128 void transformMatrixToGlobal(Matrix m) { 1129 final View.AttachInfo attachInfo = mAttachInfo; 1130 m.postTranslate(attachInfo.mWindowLeft, attachInfo.mWindowTop); 1131 } 1132 1133 /** 1134 * Modifies the input matrix such that it maps on-screen coordinates to 1135 * view-local coordinates. 1136 * 1137 * @param m input matrix to modify 1138 */ 1139 void transformMatrixToLocal(Matrix m) { 1140 final View.AttachInfo attachInfo = mAttachInfo; 1141 m.preTranslate(-attachInfo.mWindowLeft, -attachInfo.mWindowTop); 1142 } 1143 1144 private void performTraversals() { 1145 // cache mView since it is used so much below... 1146 final View host = mView; 1147 1148 if (DBG) { 1149 System.out.println("======================================"); 1150 System.out.println("performTraversals"); 1151 host.debug(); 1152 } 1153 1154 if (host == null || !mAdded) 1155 return; 1156 1157 mIsInTraversal = true; 1158 mWillDrawSoon = true; 1159 boolean windowSizeMayChange = false; 1160 boolean newSurface = false; 1161 boolean surfaceChanged = false; 1162 WindowManager.LayoutParams lp = mWindowAttributes; 1163 1164 int desiredWindowWidth; 1165 int desiredWindowHeight; 1166 1167 final View.AttachInfo attachInfo = mAttachInfo; 1168 1169 final int viewVisibility = getHostVisibility(); 1170 boolean viewVisibilityChanged = mViewVisibility != viewVisibility 1171 || mNewSurfaceNeeded; 1172 1173 WindowManager.LayoutParams params = null; 1174 if (mWindowAttributesChanged) { 1175 mWindowAttributesChanged = false; 1176 surfaceChanged = true; 1177 params = lp; 1178 } 1179 CompatibilityInfo compatibilityInfo = mDisplayAdjustments.getCompatibilityInfo(); 1180 if (compatibilityInfo.supportsScreen() == mLastInCompatMode) { 1181 params = lp; 1182 mFullRedrawNeeded = true; 1183 mLayoutRequested = true; 1184 if (mLastInCompatMode) { 1185 params.privateFlags &= ~WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 1186 mLastInCompatMode = false; 1187 } else { 1188 params.privateFlags |= WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 1189 mLastInCompatMode = true; 1190 } 1191 } 1192 1193 mWindowAttributesChangesFlag = 0; 1194 1195 Rect frame = mWinFrame; 1196 if (mFirst) { 1197 mFullRedrawNeeded = true; 1198 mLayoutRequested = true; 1199 1200 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL 1201 || lp.type == WindowManager.LayoutParams.TYPE_INPUT_METHOD) { 1202 // NOTE -- system code, won't try to do compat mode. 1203 Point size = new Point(); 1204 mDisplay.getRealSize(size); 1205 desiredWindowWidth = size.x; 1206 desiredWindowHeight = size.y; 1207 } else { 1208 DisplayMetrics packageMetrics = 1209 mView.getContext().getResources().getDisplayMetrics(); 1210 desiredWindowWidth = packageMetrics.widthPixels; 1211 desiredWindowHeight = packageMetrics.heightPixels; 1212 } 1213 1214 // We used to use the following condition to choose 32 bits drawing caches: 1215 // PixelFormat.hasAlpha(lp.format) || lp.format == PixelFormat.RGBX_8888 1216 // However, windows are now always 32 bits by default, so choose 32 bits 1217 attachInfo.mUse32BitDrawingCache = true; 1218 attachInfo.mHasWindowFocus = false; 1219 attachInfo.mWindowVisibility = viewVisibility; 1220 attachInfo.mRecomputeGlobalAttributes = false; 1221 viewVisibilityChanged = false; 1222 mLastConfiguration.setTo(host.getResources().getConfiguration()); 1223 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1224 // Set the layout direction if it has not been set before (inherit is the default) 1225 if (mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 1226 host.setLayoutDirection(mLastConfiguration.getLayoutDirection()); 1227 } 1228 host.dispatchAttachedToWindow(attachInfo, 0); 1229 attachInfo.mTreeObserver.dispatchOnWindowAttachedChange(true); 1230 mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets); 1231 host.fitSystemWindows(mFitSystemWindowsInsets); 1232 //Log.i(TAG, "Screen on initialized: " + attachInfo.mKeepScreenOn); 1233 1234 } else { 1235 desiredWindowWidth = frame.width(); 1236 desiredWindowHeight = frame.height(); 1237 if (desiredWindowWidth != mWidth || desiredWindowHeight != mHeight) { 1238 if (DEBUG_ORIENTATION) Log.v(TAG, 1239 "View " + host + " resized to: " + frame); 1240 mFullRedrawNeeded = true; 1241 mLayoutRequested = true; 1242 windowSizeMayChange = true; 1243 } 1244 } 1245 1246 if (viewVisibilityChanged) { 1247 attachInfo.mWindowVisibility = viewVisibility; 1248 host.dispatchWindowVisibilityChanged(viewVisibility); 1249 if (viewVisibility != View.VISIBLE || mNewSurfaceNeeded) { 1250 destroyHardwareResources(); 1251 } 1252 if (viewVisibility == View.GONE) { 1253 // After making a window gone, we will count it as being 1254 // shown for the first time the next time it gets focus. 1255 mHasHadWindowFocus = false; 1256 } 1257 } 1258 1259 // Execute enqueued actions on every traversal in case a detached view enqueued an action 1260 getRunQueue().executeActions(attachInfo.mHandler); 1261 1262 boolean insetsChanged = false; 1263 1264 boolean layoutRequested = mLayoutRequested && !mStopped; 1265 if (layoutRequested) { 1266 1267 final Resources res = mView.getContext().getResources(); 1268 1269 if (mFirst) { 1270 // make sure touch mode code executes by setting cached value 1271 // to opposite of the added touch mode. 1272 mAttachInfo.mInTouchMode = !mAddedTouchMode; 1273 ensureTouchModeLocally(mAddedTouchMode); 1274 } else { 1275 if (!mPendingOverscanInsets.equals(mAttachInfo.mOverscanInsets)) { 1276 insetsChanged = true; 1277 } 1278 if (!mPendingContentInsets.equals(mAttachInfo.mContentInsets)) { 1279 insetsChanged = true; 1280 } 1281 if (!mPendingVisibleInsets.equals(mAttachInfo.mVisibleInsets)) { 1282 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1283 if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: " 1284 + mAttachInfo.mVisibleInsets); 1285 } 1286 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT 1287 || lp.height == ViewGroup.LayoutParams.WRAP_CONTENT) { 1288 windowSizeMayChange = true; 1289 1290 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL 1291 || lp.type == WindowManager.LayoutParams.TYPE_INPUT_METHOD) { 1292 // NOTE -- system code, won't try to do compat mode. 1293 Point size = new Point(); 1294 mDisplay.getRealSize(size); 1295 desiredWindowWidth = size.x; 1296 desiredWindowHeight = size.y; 1297 } else { 1298 DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1299 desiredWindowWidth = packageMetrics.widthPixels; 1300 desiredWindowHeight = packageMetrics.heightPixels; 1301 } 1302 } 1303 } 1304 1305 // Ask host how big it wants to be 1306 windowSizeMayChange |= measureHierarchy(host, lp, res, 1307 desiredWindowWidth, desiredWindowHeight); 1308 } 1309 1310 if (collectViewAttributes()) { 1311 params = lp; 1312 } 1313 if (attachInfo.mForceReportNewAttributes) { 1314 attachInfo.mForceReportNewAttributes = false; 1315 params = lp; 1316 } 1317 1318 if (mFirst || attachInfo.mViewVisibilityChanged) { 1319 attachInfo.mViewVisibilityChanged = false; 1320 int resizeMode = mSoftInputMode & 1321 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST; 1322 // If we are in auto resize mode, then we need to determine 1323 // what mode to use now. 1324 if (resizeMode == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 1325 final int N = attachInfo.mScrollContainers.size(); 1326 for (int i=0; i<N; i++) { 1327 if (attachInfo.mScrollContainers.get(i).isShown()) { 1328 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE; 1329 } 1330 } 1331 if (resizeMode == 0) { 1332 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_PAN; 1333 } 1334 if ((lp.softInputMode & 1335 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) != resizeMode) { 1336 lp.softInputMode = (lp.softInputMode & 1337 ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) | 1338 resizeMode; 1339 params = lp; 1340 } 1341 } 1342 } 1343 1344 if (params != null) { 1345 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 1346 if (!PixelFormat.formatHasAlpha(params.format)) { 1347 params.format = PixelFormat.TRANSLUCENT; 1348 } 1349 } 1350 mAttachInfo.mOverscanRequested = (params.flags 1351 & WindowManager.LayoutParams.FLAG_LAYOUT_IN_OVERSCAN) != 0; 1352 } 1353 1354 if (mFitSystemWindowsRequested) { 1355 mFitSystemWindowsRequested = false; 1356 mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets); 1357 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1358 host.fitSystemWindows(mFitSystemWindowsInsets); 1359 if (mLayoutRequested) { 1360 // Short-circuit catching a new layout request here, so 1361 // we don't need to go through two layout passes when things 1362 // change due to fitting system windows, which can happen a lot. 1363 windowSizeMayChange |= measureHierarchy(host, lp, 1364 mView.getContext().getResources(), 1365 desiredWindowWidth, desiredWindowHeight); 1366 } 1367 } 1368 1369 if (layoutRequested) { 1370 // Clear this now, so that if anything requests a layout in the 1371 // rest of this function we will catch it and re-run a full 1372 // layout pass. 1373 mLayoutRequested = false; 1374 } 1375 1376 boolean windowShouldResize = layoutRequested && windowSizeMayChange 1377 && ((mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) 1378 || (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT && 1379 frame.width() < desiredWindowWidth && frame.width() != mWidth) 1380 || (lp.height == ViewGroup.LayoutParams.WRAP_CONTENT && 1381 frame.height() < desiredWindowHeight && frame.height() != mHeight)); 1382 1383 // Determine whether to compute insets. 1384 // If there are no inset listeners remaining then we may still need to compute 1385 // insets in case the old insets were non-empty and must be reset. 1386 final boolean computesInternalInsets = 1387 attachInfo.mTreeObserver.hasComputeInternalInsetsListeners() 1388 || attachInfo.mHasNonEmptyGivenInternalInsets; 1389 1390 boolean insetsPending = false; 1391 int relayoutResult = 0; 1392 1393 if (mFirst || windowShouldResize || insetsChanged || 1394 viewVisibilityChanged || params != null) { 1395 1396 if (viewVisibility == View.VISIBLE) { 1397 // If this window is giving internal insets to the window 1398 // manager, and it is being added or changing its visibility, 1399 // then we want to first give the window manager "fake" 1400 // insets to cause it to effectively ignore the content of 1401 // the window during layout. This avoids it briefly causing 1402 // other windows to resize/move based on the raw frame of the 1403 // window, waiting until we can finish laying out this window 1404 // and get back to the window manager with the ultimately 1405 // computed insets. 1406 insetsPending = computesInternalInsets && (mFirst || viewVisibilityChanged); 1407 } 1408 1409 if (mSurfaceHolder != null) { 1410 mSurfaceHolder.mSurfaceLock.lock(); 1411 mDrawingAllowed = true; 1412 } 1413 1414 boolean hwInitialized = false; 1415 boolean contentInsetsChanged = false; 1416 boolean hadSurface = mSurface.isValid(); 1417 1418 try { 1419 if (DEBUG_LAYOUT) { 1420 Log.i(TAG, "host=w:" + host.getMeasuredWidth() + ", h:" + 1421 host.getMeasuredHeight() + ", params=" + params); 1422 } 1423 1424 final int surfaceGenerationId = mSurface.getGenerationId(); 1425 relayoutResult = relayoutWindow(params, viewVisibility, insetsPending); 1426 if (!mDrawDuringWindowsAnimating && 1427 (relayoutResult & WindowManagerGlobal.RELAYOUT_RES_ANIMATING) != 0) { 1428 mWindowsAnimating = true; 1429 } 1430 1431 if (DEBUG_LAYOUT) Log.v(TAG, "relayout: frame=" + frame.toShortString() 1432 + " overscan=" + mPendingOverscanInsets.toShortString() 1433 + " content=" + mPendingContentInsets.toShortString() 1434 + " visible=" + mPendingVisibleInsets.toShortString() 1435 + " surface=" + mSurface); 1436 1437 if (mPendingConfiguration.seq != 0) { 1438 if (DEBUG_CONFIGURATION) Log.v(TAG, "Visible with new config: " 1439 + mPendingConfiguration); 1440 updateConfiguration(mPendingConfiguration, !mFirst); 1441 mPendingConfiguration.seq = 0; 1442 } 1443 1444 final boolean overscanInsetsChanged = !mPendingOverscanInsets.equals( 1445 mAttachInfo.mOverscanInsets); 1446 contentInsetsChanged = !mPendingContentInsets.equals( 1447 mAttachInfo.mContentInsets); 1448 final boolean visibleInsetsChanged = !mPendingVisibleInsets.equals( 1449 mAttachInfo.mVisibleInsets); 1450 if (contentInsetsChanged) { 1451 if (mWidth > 0 && mHeight > 0 && lp != null && 1452 ((lp.systemUiVisibility|lp.subtreeSystemUiVisibility) 1453 & View.SYSTEM_UI_LAYOUT_FLAGS) == 0 && 1454 mSurface != null && mSurface.isValid() && 1455 !mAttachInfo.mTurnOffWindowResizeAnim && 1456 mAttachInfo.mHardwareRenderer != null && 1457 mAttachInfo.mHardwareRenderer.isEnabled() && 1458 lp != null && !PixelFormat.formatHasAlpha(lp.format) 1459 && !mBlockResizeBuffer) { 1460 1461 disposeResizeBuffer(); 1462 1463 if (mResizeBuffer == null) { 1464 mResizeBuffer = mAttachInfo.mHardwareRenderer.createDisplayListLayer( 1465 mWidth, mHeight); 1466 } 1467 mResizeBuffer.prepare(mWidth, mHeight, false); 1468 RenderNode layerRenderNode = mResizeBuffer.startRecording(); 1469 HardwareCanvas layerCanvas = layerRenderNode.start(mWidth, mHeight); 1470 final int restoreCount = layerCanvas.save(); 1471 1472 int yoff; 1473 final boolean scrolling = mScroller != null 1474 && mScroller.computeScrollOffset(); 1475 if (scrolling) { 1476 yoff = mScroller.getCurrY(); 1477 mScroller.abortAnimation(); 1478 } else { 1479 yoff = mScrollY; 1480 } 1481 1482 layerCanvas.translate(0, -yoff); 1483 if (mTranslator != null) { 1484 mTranslator.translateCanvas(layerCanvas); 1485 } 1486 1487 RenderNode renderNode = mView.mRenderNode; 1488 if (renderNode != null && renderNode.isValid()) { 1489 layerCanvas.drawDisplayList(renderNode, null, 1490 RenderNode.FLAG_CLIP_CHILDREN); 1491 } else { 1492 mView.draw(layerCanvas); 1493 } 1494 1495 drawAccessibilityFocusedDrawableIfNeeded(layerCanvas); 1496 1497 mResizeBufferStartTime = SystemClock.uptimeMillis(); 1498 mResizeBufferDuration = mView.getResources().getInteger( 1499 com.android.internal.R.integer.config_mediumAnimTime); 1500 1501 layerCanvas.restoreToCount(restoreCount); 1502 layerRenderNode.end(mAttachInfo.mHardwareRenderer, layerCanvas); 1503 layerRenderNode.setCaching(true); 1504 layerRenderNode.setLeftTopRightBottom(0, 0, mWidth, mHeight); 1505 mTempRect.set(0, 0, mWidth, mHeight); 1506 mResizeBuffer.endRecording(mTempRect); 1507 mAttachInfo.mHardwareRenderer.flushLayerUpdates(); 1508 } 1509 mAttachInfo.mContentInsets.set(mPendingContentInsets); 1510 if (DEBUG_LAYOUT) Log.v(TAG, "Content insets changing to: " 1511 + mAttachInfo.mContentInsets); 1512 } 1513 if (overscanInsetsChanged) { 1514 mAttachInfo.mOverscanInsets.set(mPendingOverscanInsets); 1515 if (DEBUG_LAYOUT) Log.v(TAG, "Overscan insets changing to: " 1516 + mAttachInfo.mOverscanInsets); 1517 // Need to relayout with content insets. 1518 contentInsetsChanged = true; 1519 } 1520 if (contentInsetsChanged || mLastSystemUiVisibility != 1521 mAttachInfo.mSystemUiVisibility || mFitSystemWindowsRequested 1522 || mLastOverscanRequested != mAttachInfo.mOverscanRequested) { 1523 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1524 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1525 mFitSystemWindowsRequested = false; 1526 mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets); 1527 host.fitSystemWindows(mFitSystemWindowsInsets); 1528 } 1529 if (visibleInsetsChanged) { 1530 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1531 if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: " 1532 + mAttachInfo.mVisibleInsets); 1533 } 1534 1535 if (!hadSurface) { 1536 if (mSurface.isValid()) { 1537 // If we are creating a new surface, then we need to 1538 // completely redraw it. Also, when we get to the 1539 // point of drawing it we will hold off and schedule 1540 // a new traversal instead. This is so we can tell the 1541 // window manager about all of the windows being displayed 1542 // before actually drawing them, so it can display then 1543 // all at once. 1544 newSurface = true; 1545 mFullRedrawNeeded = true; 1546 mPreviousTransparentRegion.setEmpty(); 1547 1548 if (mAttachInfo.mHardwareRenderer != null) { 1549 try { 1550 hwInitialized = mAttachInfo.mHardwareRenderer.initialize( 1551 mSurface); 1552 } catch (OutOfResourcesException e) { 1553 handleOutOfResourcesException(e); 1554 return; 1555 } 1556 } 1557 } 1558 } else if (!mSurface.isValid()) { 1559 // If the surface has been removed, then reset the scroll 1560 // positions. 1561 if (mLastScrolledFocus != null) { 1562 mLastScrolledFocus.clear(); 1563 } 1564 mScrollY = mCurScrollY = 0; 1565 if (mScroller != null) { 1566 mScroller.abortAnimation(); 1567 } 1568 disposeResizeBuffer(); 1569 // Our surface is gone 1570 if (mAttachInfo.mHardwareRenderer != null && 1571 mAttachInfo.mHardwareRenderer.isEnabled()) { 1572 mAttachInfo.mHardwareRenderer.destroy(true); 1573 } 1574 } else if (surfaceGenerationId != mSurface.getGenerationId() && 1575 mSurfaceHolder == null && mAttachInfo.mHardwareRenderer != null) { 1576 mFullRedrawNeeded = true; 1577 try { 1578 mAttachInfo.mHardwareRenderer.updateSurface(mSurface); 1579 } catch (OutOfResourcesException e) { 1580 handleOutOfResourcesException(e); 1581 return; 1582 } 1583 } 1584 } catch (RemoteException e) { 1585 } 1586 1587 if (DEBUG_ORIENTATION) Log.v( 1588 TAG, "Relayout returned: frame=" + frame + ", surface=" + mSurface); 1589 1590 attachInfo.mWindowLeft = frame.left; 1591 attachInfo.mWindowTop = frame.top; 1592 1593 // !!FIXME!! This next section handles the case where we did not get the 1594 // window size we asked for. We should avoid this by getting a maximum size from 1595 // the window session beforehand. 1596 if (mWidth != frame.width() || mHeight != frame.height()) { 1597 mWidth = frame.width(); 1598 mHeight = frame.height(); 1599 } 1600 1601 if (mSurfaceHolder != null) { 1602 // The app owns the surface; tell it about what is going on. 1603 if (mSurface.isValid()) { 1604 // XXX .copyFrom() doesn't work! 1605 //mSurfaceHolder.mSurface.copyFrom(mSurface); 1606 mSurfaceHolder.mSurface = mSurface; 1607 } 1608 mSurfaceHolder.setSurfaceFrameSize(mWidth, mHeight); 1609 mSurfaceHolder.mSurfaceLock.unlock(); 1610 if (mSurface.isValid()) { 1611 if (!hadSurface) { 1612 mSurfaceHolder.ungetCallbacks(); 1613 1614 mIsCreating = true; 1615 mSurfaceHolderCallback.surfaceCreated(mSurfaceHolder); 1616 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1617 if (callbacks != null) { 1618 for (SurfaceHolder.Callback c : callbacks) { 1619 c.surfaceCreated(mSurfaceHolder); 1620 } 1621 } 1622 surfaceChanged = true; 1623 } 1624 if (surfaceChanged) { 1625 mSurfaceHolderCallback.surfaceChanged(mSurfaceHolder, 1626 lp.format, mWidth, mHeight); 1627 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1628 if (callbacks != null) { 1629 for (SurfaceHolder.Callback c : callbacks) { 1630 c.surfaceChanged(mSurfaceHolder, lp.format, 1631 mWidth, mHeight); 1632 } 1633 } 1634 } 1635 mIsCreating = false; 1636 } else if (hadSurface) { 1637 mSurfaceHolder.ungetCallbacks(); 1638 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1639 mSurfaceHolderCallback.surfaceDestroyed(mSurfaceHolder); 1640 if (callbacks != null) { 1641 for (SurfaceHolder.Callback c : callbacks) { 1642 c.surfaceDestroyed(mSurfaceHolder); 1643 } 1644 } 1645 mSurfaceHolder.mSurfaceLock.lock(); 1646 try { 1647 mSurfaceHolder.mSurface = new Surface(); 1648 } finally { 1649 mSurfaceHolder.mSurfaceLock.unlock(); 1650 } 1651 } 1652 } 1653 1654 if (mAttachInfo.mHardwareRenderer != null && 1655 mAttachInfo.mHardwareRenderer.isEnabled()) { 1656 if (hwInitialized || 1657 mWidth != mAttachInfo.mHardwareRenderer.getWidth() || 1658 mHeight != mAttachInfo.mHardwareRenderer.getHeight()) { 1659 mAttachInfo.mHardwareRenderer.setup(mWidth, mHeight); 1660 if (!hwInitialized) { 1661 mAttachInfo.mHardwareRenderer.invalidate(mSurface); 1662 mFullRedrawNeeded = true; 1663 } 1664 } 1665 } 1666 1667 if (!mStopped) { 1668 boolean focusChangedDueToTouchMode = ensureTouchModeLocally( 1669 (relayoutResult&WindowManagerGlobal.RELAYOUT_RES_IN_TOUCH_MODE) != 0); 1670 if (focusChangedDueToTouchMode || mWidth != host.getMeasuredWidth() 1671 || mHeight != host.getMeasuredHeight() || contentInsetsChanged) { 1672 int childWidthMeasureSpec = getRootMeasureSpec(mWidth, lp.width); 1673 int childHeightMeasureSpec = getRootMeasureSpec(mHeight, lp.height); 1674 1675 if (DEBUG_LAYOUT) Log.v(TAG, "Ooops, something changed! mWidth=" 1676 + mWidth + " measuredWidth=" + host.getMeasuredWidth() 1677 + " mHeight=" + mHeight 1678 + " measuredHeight=" + host.getMeasuredHeight() 1679 + " coveredInsetsChanged=" + contentInsetsChanged); 1680 1681 // Ask host how big it wants to be 1682 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1683 1684 // Implementation of weights from WindowManager.LayoutParams 1685 // We just grow the dimensions as needed and re-measure if 1686 // needs be 1687 int width = host.getMeasuredWidth(); 1688 int height = host.getMeasuredHeight(); 1689 boolean measureAgain = false; 1690 1691 if (lp.horizontalWeight > 0.0f) { 1692 width += (int) ((mWidth - width) * lp.horizontalWeight); 1693 childWidthMeasureSpec = MeasureSpec.makeMeasureSpec(width, 1694 MeasureSpec.EXACTLY); 1695 measureAgain = true; 1696 } 1697 if (lp.verticalWeight > 0.0f) { 1698 height += (int) ((mHeight - height) * lp.verticalWeight); 1699 childHeightMeasureSpec = MeasureSpec.makeMeasureSpec(height, 1700 MeasureSpec.EXACTLY); 1701 measureAgain = true; 1702 } 1703 1704 if (measureAgain) { 1705 if (DEBUG_LAYOUT) Log.v(TAG, 1706 "And hey let's measure once more: width=" + width 1707 + " height=" + height); 1708 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1709 } 1710 1711 layoutRequested = true; 1712 } 1713 } 1714 } else { 1715 // Not the first pass and no window/insets/visibility change but the window 1716 // may have moved and we need check that and if so to update the left and right 1717 // in the attach info. We translate only the window frame since on window move 1718 // the window manager tells us only for the new frame but the insets are the 1719 // same and we do not want to translate them more than once. 1720 1721 // TODO: Well, we are checking whether the frame has changed similarly 1722 // to how this is done for the insets. This is however incorrect since 1723 // the insets and the frame are translated. For example, the old frame 1724 // was (1, 1 - 1, 1) and was translated to say (2, 2 - 2, 2), now the new 1725 // reported frame is (2, 2 - 2, 2) which implies no change but this is not 1726 // true since we are comparing a not translated value to a translated one. 1727 // This scenario is rare but we may want to fix that. 1728 1729 final boolean windowMoved = (attachInfo.mWindowLeft != frame.left 1730 || attachInfo.mWindowTop != frame.top); 1731 if (windowMoved) { 1732 if (mTranslator != null) { 1733 mTranslator.translateRectInScreenToAppWinFrame(frame); 1734 } 1735 attachInfo.mWindowLeft = frame.left; 1736 attachInfo.mWindowTop = frame.top; 1737 } 1738 } 1739 1740 final boolean didLayout = layoutRequested && !mStopped; 1741 boolean triggerGlobalLayoutListener = didLayout 1742 || attachInfo.mRecomputeGlobalAttributes; 1743 if (didLayout) { 1744 performLayout(lp, desiredWindowWidth, desiredWindowHeight); 1745 1746 // By this point all views have been sized and positioned 1747 // We can compute the transparent area 1748 1749 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 1750 // start out transparent 1751 // TODO: AVOID THAT CALL BY CACHING THE RESULT? 1752 host.getLocationInWindow(mTmpLocation); 1753 mTransparentRegion.set(mTmpLocation[0], mTmpLocation[1], 1754 mTmpLocation[0] + host.mRight - host.mLeft, 1755 mTmpLocation[1] + host.mBottom - host.mTop); 1756 1757 host.gatherTransparentRegion(mTransparentRegion); 1758 if (mTranslator != null) { 1759 mTranslator.translateRegionInWindowToScreen(mTransparentRegion); 1760 } 1761 1762 if (!mTransparentRegion.equals(mPreviousTransparentRegion)) { 1763 mPreviousTransparentRegion.set(mTransparentRegion); 1764 mFullRedrawNeeded = true; 1765 // reconfigure window manager 1766 try { 1767 mWindowSession.setTransparentRegion(mWindow, mTransparentRegion); 1768 } catch (RemoteException e) { 1769 } 1770 } 1771 } 1772 1773 if (DBG) { 1774 System.out.println("======================================"); 1775 System.out.println("performTraversals -- after setFrame"); 1776 host.debug(); 1777 } 1778 } 1779 1780 if (triggerGlobalLayoutListener) { 1781 attachInfo.mRecomputeGlobalAttributes = false; 1782 attachInfo.mTreeObserver.dispatchOnGlobalLayout(); 1783 } 1784 1785 if (computesInternalInsets) { 1786 // Clear the original insets. 1787 final ViewTreeObserver.InternalInsetsInfo insets = attachInfo.mGivenInternalInsets; 1788 insets.reset(); 1789 1790 // Compute new insets in place. 1791 attachInfo.mTreeObserver.dispatchOnComputeInternalInsets(insets); 1792 attachInfo.mHasNonEmptyGivenInternalInsets = !insets.isEmpty(); 1793 1794 // Tell the window manager. 1795 if (insetsPending || !mLastGivenInsets.equals(insets)) { 1796 mLastGivenInsets.set(insets); 1797 1798 // Translate insets to screen coordinates if needed. 1799 final Rect contentInsets; 1800 final Rect visibleInsets; 1801 final Region touchableRegion; 1802 if (mTranslator != null) { 1803 contentInsets = mTranslator.getTranslatedContentInsets(insets.contentInsets); 1804 visibleInsets = mTranslator.getTranslatedVisibleInsets(insets.visibleInsets); 1805 touchableRegion = mTranslator.getTranslatedTouchableArea(insets.touchableRegion); 1806 } else { 1807 contentInsets = insets.contentInsets; 1808 visibleInsets = insets.visibleInsets; 1809 touchableRegion = insets.touchableRegion; 1810 } 1811 1812 try { 1813 mWindowSession.setInsets(mWindow, insets.mTouchableInsets, 1814 contentInsets, visibleInsets, touchableRegion); 1815 } catch (RemoteException e) { 1816 } 1817 } 1818 } 1819 1820 boolean skipDraw = false; 1821 1822 if (mFirst) { 1823 // handle first focus request 1824 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: mView.hasFocus()=" 1825 + mView.hasFocus()); 1826 if (mView != null) { 1827 if (!mView.hasFocus()) { 1828 mView.requestFocus(View.FOCUS_FORWARD); 1829 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: requested focused view=" 1830 + mView.findFocus()); 1831 } else { 1832 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: existing focused view=" 1833 + mView.findFocus()); 1834 } 1835 } 1836 if ((relayoutResult & WindowManagerGlobal.RELAYOUT_RES_ANIMATING) != 0) { 1837 // The first time we relayout the window, if the system is 1838 // doing window animations, we want to hold of on any future 1839 // draws until the animation is done. 1840 mWindowsAnimating = true; 1841 } 1842 } else if (mWindowsAnimating) { 1843 skipDraw = true; 1844 } 1845 1846 mFirst = false; 1847 mWillDrawSoon = false; 1848 mNewSurfaceNeeded = false; 1849 mViewVisibility = viewVisibility; 1850 1851 if (mAttachInfo.mHasWindowFocus && !isInLocalFocusMode()) { 1852 final boolean imTarget = WindowManager.LayoutParams 1853 .mayUseInputMethod(mWindowAttributes.flags); 1854 if (imTarget != mLastWasImTarget) { 1855 mLastWasImTarget = imTarget; 1856 InputMethodManager imm = InputMethodManager.peekInstance(); 1857 if (imm != null && imTarget) { 1858 imm.startGettingWindowFocus(mView); 1859 imm.onWindowFocus(mView, mView.findFocus(), 1860 mWindowAttributes.softInputMode, 1861 !mHasHadWindowFocus, mWindowAttributes.flags); 1862 } 1863 } 1864 } 1865 1866 // Remember if we must report the next draw. 1867 if ((relayoutResult & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 1868 mReportNextDraw = true; 1869 } 1870 1871 boolean cancelDraw = attachInfo.mTreeObserver.dispatchOnPreDraw() || 1872 viewVisibility != View.VISIBLE; 1873 1874 if (!cancelDraw && !newSurface) { 1875 if (!skipDraw || mReportNextDraw) { 1876 if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 1877 for (int i = 0; i < mPendingTransitions.size(); ++i) { 1878 mPendingTransitions.get(i).startChangingAnimations(); 1879 } 1880 mPendingTransitions.clear(); 1881 } 1882 1883 performDraw(); 1884 } 1885 } else { 1886 if (viewVisibility == View.VISIBLE) { 1887 // Try again 1888 scheduleTraversals(); 1889 } else if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 1890 for (int i = 0; i < mPendingTransitions.size(); ++i) { 1891 mPendingTransitions.get(i).endChangingAnimations(); 1892 } 1893 mPendingTransitions.clear(); 1894 } 1895 } 1896 1897 mIsInTraversal = false; 1898 } 1899 1900 private void handleOutOfResourcesException(Surface.OutOfResourcesException e) { 1901 Log.e(TAG, "OutOfResourcesException initializing HW surface", e); 1902 try { 1903 if (!mWindowSession.outOfMemory(mWindow) && 1904 Process.myUid() != Process.SYSTEM_UID) { 1905 Slog.w(TAG, "No processes killed for memory; killing self"); 1906 Process.killProcess(Process.myPid()); 1907 } 1908 } catch (RemoteException ex) { 1909 } 1910 mLayoutRequested = true; // ask wm for a new surface next time. 1911 } 1912 1913 private void performMeasure(int childWidthMeasureSpec, int childHeightMeasureSpec) { 1914 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "measure"); 1915 try { 1916 mView.measure(childWidthMeasureSpec, childHeightMeasureSpec); 1917 } finally { 1918 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 1919 } 1920 } 1921 1922 /** 1923 * Called by {@link android.view.View#isInLayout()} to determine whether the view hierarchy 1924 * is currently undergoing a layout pass. 1925 * 1926 * @return whether the view hierarchy is currently undergoing a layout pass 1927 */ 1928 boolean isInLayout() { 1929 return mInLayout; 1930 } 1931 1932 /** 1933 * Called by {@link android.view.View#requestLayout()} if the view hierarchy is currently 1934 * undergoing a layout pass. requestLayout() should not generally be called during layout, 1935 * unless the container hierarchy knows what it is doing (i.e., it is fine as long as 1936 * all children in that container hierarchy are measured and laid out at the end of the layout 1937 * pass for that container). If requestLayout() is called anyway, we handle it correctly 1938 * by registering all requesters during a frame as it proceeds. At the end of the frame, 1939 * we check all of those views to see if any still have pending layout requests, which 1940 * indicates that they were not correctly handled by their container hierarchy. If that is 1941 * the case, we clear all such flags in the tree, to remove the buggy flag state that leads 1942 * to blank containers, and force a second request/measure/layout pass in this frame. If 1943 * more requestLayout() calls are received during that second layout pass, we post those 1944 * requests to the next frame to avoid possible infinite loops. 1945 * 1946 * <p>The return value from this method indicates whether the request should proceed 1947 * (if it is a request during the first layout pass) or should be skipped and posted to the 1948 * next frame (if it is a request during the second layout pass).</p> 1949 * 1950 * @param view the view that requested the layout. 1951 * 1952 * @return true if request should proceed, false otherwise. 1953 */ 1954 boolean requestLayoutDuringLayout(final View view) { 1955 if (view.mParent == null || view.mAttachInfo == null) { 1956 // Would not normally trigger another layout, so just let it pass through as usual 1957 return true; 1958 } 1959 if (!mLayoutRequesters.contains(view)) { 1960 mLayoutRequesters.add(view); 1961 } 1962 if (!mHandlingLayoutInLayoutRequest) { 1963 // Let the request proceed normally; it will be processed in a second layout pass 1964 // if necessary 1965 return true; 1966 } else { 1967 // Don't let the request proceed during the second layout pass. 1968 // It will post to the next frame instead. 1969 return false; 1970 } 1971 } 1972 1973 private void performLayout(WindowManager.LayoutParams lp, int desiredWindowWidth, 1974 int desiredWindowHeight) { 1975 mLayoutRequested = false; 1976 mScrollMayChange = true; 1977 mInLayout = true; 1978 1979 final View host = mView; 1980 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) { 1981 Log.v(TAG, "Laying out " + host + " to (" + 1982 host.getMeasuredWidth() + ", " + host.getMeasuredHeight() + ")"); 1983 } 1984 1985 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "layout"); 1986 try { 1987 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 1988 1989 mInLayout = false; 1990 int numViewsRequestingLayout = mLayoutRequesters.size(); 1991 if (numViewsRequestingLayout > 0) { 1992 // requestLayout() was called during layout. 1993 // If no layout-request flags are set on the requesting views, there is no problem. 1994 // If some requests are still pending, then we need to clear those flags and do 1995 // a full request/measure/layout pass to handle this situation. 1996 ArrayList<View> validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, 1997 false); 1998 if (validLayoutRequesters != null) { 1999 // Set this flag to indicate that any further requests are happening during 2000 // the second pass, which may result in posting those requests to the next 2001 // frame instead 2002 mHandlingLayoutInLayoutRequest = true; 2003 2004 // Process fresh layout requests, then measure and layout 2005 int numValidRequests = validLayoutRequesters.size(); 2006 for (int i = 0; i < numValidRequests; ++i) { 2007 final View view = validLayoutRequesters.get(i); 2008 Log.w("View", "requestLayout() improperly called by " + view + 2009 " during layout: running second layout pass"); 2010 view.requestLayout(); 2011 } 2012 measureHierarchy(host, lp, mView.getContext().getResources(), 2013 desiredWindowWidth, desiredWindowHeight); 2014 mInLayout = true; 2015 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 2016 2017 mHandlingLayoutInLayoutRequest = false; 2018 2019 // Check the valid requests again, this time without checking/clearing the 2020 // layout flags, since requests happening during the second pass get noop'd 2021 validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, true); 2022 if (validLayoutRequesters != null) { 2023 final ArrayList<View> finalRequesters = validLayoutRequesters; 2024 // Post second-pass requests to the next frame 2025 getRunQueue().post(new Runnable() { 2026 @Override 2027 public void run() { 2028 int numValidRequests = finalRequesters.size(); 2029 for (int i = 0; i < numValidRequests; ++i) { 2030 final View view = finalRequesters.get(i); 2031 Log.w("View", "requestLayout() improperly called by " + view + 2032 " during second layout pass: posting in next frame"); 2033 view.requestLayout(); 2034 } 2035 } 2036 }); 2037 } 2038 } 2039 2040 } 2041 } finally { 2042 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2043 } 2044 mInLayout = false; 2045 } 2046 2047 /** 2048 * This method is called during layout when there have been calls to requestLayout() during 2049 * layout. It walks through the list of views that requested layout to determine which ones 2050 * still need it, based on visibility in the hierarchy and whether they have already been 2051 * handled (as is usually the case with ListView children). 2052 * 2053 * @param layoutRequesters The list of views that requested layout during layout 2054 * @param secondLayoutRequests Whether the requests were issued during the second layout pass. 2055 * If so, the FORCE_LAYOUT flag was not set on requesters. 2056 * @return A list of the actual views that still need to be laid out. 2057 */ 2058 private ArrayList<View> getValidLayoutRequesters(ArrayList<View> layoutRequesters, 2059 boolean secondLayoutRequests) { 2060 2061 int numViewsRequestingLayout = layoutRequesters.size(); 2062 ArrayList<View> validLayoutRequesters = null; 2063 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2064 View view = layoutRequesters.get(i); 2065 if (view != null && view.mAttachInfo != null && view.mParent != null && 2066 (secondLayoutRequests || (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) == 2067 View.PFLAG_FORCE_LAYOUT)) { 2068 boolean gone = false; 2069 View parent = view; 2070 // Only trigger new requests for views in a non-GONE hierarchy 2071 while (parent != null) { 2072 if ((parent.mViewFlags & View.VISIBILITY_MASK) == View.GONE) { 2073 gone = true; 2074 break; 2075 } 2076 if (parent.mParent instanceof View) { 2077 parent = (View) parent.mParent; 2078 } else { 2079 parent = null; 2080 } 2081 } 2082 if (!gone) { 2083 if (validLayoutRequesters == null) { 2084 validLayoutRequesters = new ArrayList<View>(); 2085 } 2086 validLayoutRequesters.add(view); 2087 } 2088 } 2089 } 2090 if (!secondLayoutRequests) { 2091 // If we're checking the layout flags, then we need to clean them up also 2092 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2093 View view = layoutRequesters.get(i); 2094 while (view != null && 2095 (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) != 0) { 2096 view.mPrivateFlags &= ~View.PFLAG_FORCE_LAYOUT; 2097 if (view.mParent instanceof View) { 2098 view = (View) view.mParent; 2099 } else { 2100 view = null; 2101 } 2102 } 2103 } 2104 } 2105 layoutRequesters.clear(); 2106 return validLayoutRequesters; 2107 } 2108 2109 @Override 2110 public void requestTransparentRegion(View child) { 2111 // the test below should not fail unless someone is messing with us 2112 checkThread(); 2113 if (mView == child) { 2114 mView.mPrivateFlags |= View.PFLAG_REQUEST_TRANSPARENT_REGIONS; 2115 // Need to make sure we re-evaluate the window attributes next 2116 // time around, to ensure the window has the correct format. 2117 mWindowAttributesChanged = true; 2118 mWindowAttributesChangesFlag = 0; 2119 requestLayout(); 2120 } 2121 } 2122 2123 /** 2124 * Figures out the measure spec for the root view in a window based on it's 2125 * layout params. 2126 * 2127 * @param windowSize 2128 * The available width or height of the window 2129 * 2130 * @param rootDimension 2131 * The layout params for one dimension (width or height) of the 2132 * window. 2133 * 2134 * @return The measure spec to use to measure the root view. 2135 */ 2136 private static int getRootMeasureSpec(int windowSize, int rootDimension) { 2137 int measureSpec; 2138 switch (rootDimension) { 2139 2140 case ViewGroup.LayoutParams.MATCH_PARENT: 2141 // Window can't resize. Force root view to be windowSize. 2142 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.EXACTLY); 2143 break; 2144 case ViewGroup.LayoutParams.WRAP_CONTENT: 2145 // Window can resize. Set max size for root view. 2146 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.AT_MOST); 2147 break; 2148 default: 2149 // Window wants to be an exact size. Force root view to be that size. 2150 measureSpec = MeasureSpec.makeMeasureSpec(rootDimension, MeasureSpec.EXACTLY); 2151 break; 2152 } 2153 return measureSpec; 2154 } 2155 2156 int mHardwareYOffset; 2157 int mResizeAlpha; 2158 final Paint mResizePaint = new Paint(); 2159 2160 @Override 2161 public void onHardwarePreDraw(HardwareCanvas canvas) { 2162 canvas.translate(0, -mHardwareYOffset); 2163 } 2164 2165 @Override 2166 public void onHardwarePostDraw(HardwareCanvas canvas) { 2167 if (mResizeBuffer != null) { 2168 mResizePaint.setAlpha(mResizeAlpha); 2169 canvas.drawHardwareLayer(mResizeBuffer, 0.0f, mHardwareYOffset, mResizePaint); 2170 } 2171 // TODO: this 2172 if (!HardwareRenderer.sUseRenderThread) { 2173 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2174 } 2175 } 2176 2177 /** 2178 * @hide 2179 */ 2180 void outputDisplayList(View view) { 2181 RenderNode renderNode = view.getDisplayList(); 2182 if (renderNode != null) { 2183 renderNode.output(); 2184 } 2185 } 2186 2187 /** 2188 * @see #PROPERTY_PROFILE_RENDERING 2189 */ 2190 private void profileRendering(boolean enabled) { 2191 if (mProfileRendering) { 2192 mRenderProfilingEnabled = enabled; 2193 2194 if (mRenderProfiler != null) { 2195 mChoreographer.removeFrameCallback(mRenderProfiler); 2196 } 2197 if (mRenderProfilingEnabled) { 2198 if (mRenderProfiler == null) { 2199 mRenderProfiler = new Choreographer.FrameCallback() { 2200 @Override 2201 public void doFrame(long frameTimeNanos) { 2202 mDirty.set(0, 0, mWidth, mHeight); 2203 scheduleTraversals(); 2204 if (mRenderProfilingEnabled) { 2205 mChoreographer.postFrameCallback(mRenderProfiler); 2206 } 2207 } 2208 }; 2209 } 2210 mChoreographer.postFrameCallback(mRenderProfiler); 2211 } else { 2212 mRenderProfiler = null; 2213 } 2214 } 2215 } 2216 2217 /** 2218 * Called from draw() when DEBUG_FPS is enabled 2219 */ 2220 private void trackFPS() { 2221 // Tracks frames per second drawn. First value in a series of draws may be bogus 2222 // because it down not account for the intervening idle time 2223 long nowTime = System.currentTimeMillis(); 2224 if (mFpsStartTime < 0) { 2225 mFpsStartTime = mFpsPrevTime = nowTime; 2226 mFpsNumFrames = 0; 2227 } else { 2228 ++mFpsNumFrames; 2229 String thisHash = Integer.toHexString(System.identityHashCode(this)); 2230 long frameTime = nowTime - mFpsPrevTime; 2231 long totalTime = nowTime - mFpsStartTime; 2232 Log.v(TAG, "0x" + thisHash + "\tFrame time:\t" + frameTime); 2233 mFpsPrevTime = nowTime; 2234 if (totalTime > 1000) { 2235 float fps = (float) mFpsNumFrames * 1000 / totalTime; 2236 Log.v(TAG, "0x" + thisHash + "\tFPS:\t" + fps); 2237 mFpsStartTime = nowTime; 2238 mFpsNumFrames = 0; 2239 } 2240 } 2241 } 2242 2243 private void performDraw() { 2244 if (!mAttachInfo.mScreenOn && !mReportNextDraw) { 2245 return; 2246 } 2247 2248 final boolean fullRedrawNeeded = mFullRedrawNeeded; 2249 mFullRedrawNeeded = false; 2250 2251 mIsDrawing = true; 2252 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "draw"); 2253 try { 2254 draw(fullRedrawNeeded); 2255 } finally { 2256 mIsDrawing = false; 2257 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2258 } 2259 2260 if (mReportNextDraw) { 2261 mReportNextDraw = false; 2262 2263 if (LOCAL_LOGV) { 2264 Log.v(TAG, "FINISHED DRAWING: " + mWindowAttributes.getTitle()); 2265 } 2266 if (mSurfaceHolder != null && mSurface.isValid()) { 2267 mSurfaceHolderCallback.surfaceRedrawNeeded(mSurfaceHolder); 2268 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 2269 if (callbacks != null) { 2270 for (SurfaceHolder.Callback c : callbacks) { 2271 if (c instanceof SurfaceHolder.Callback2) { 2272 ((SurfaceHolder.Callback2)c).surfaceRedrawNeeded( 2273 mSurfaceHolder); 2274 } 2275 } 2276 } 2277 } 2278 try { 2279 mWindowSession.finishDrawing(mWindow); 2280 } catch (RemoteException e) { 2281 } 2282 } 2283 } 2284 2285 private void draw(boolean fullRedrawNeeded) { 2286 Surface surface = mSurface; 2287 if (!surface.isValid()) { 2288 return; 2289 } 2290 2291 if (DEBUG_FPS) { 2292 trackFPS(); 2293 } 2294 2295 if (!sFirstDrawComplete) { 2296 synchronized (sFirstDrawHandlers) { 2297 sFirstDrawComplete = true; 2298 final int count = sFirstDrawHandlers.size(); 2299 for (int i = 0; i< count; i++) { 2300 mHandler.post(sFirstDrawHandlers.get(i)); 2301 } 2302 } 2303 } 2304 2305 scrollToRectOrFocus(null, false); 2306 2307 final AttachInfo attachInfo = mAttachInfo; 2308 if (attachInfo.mViewScrollChanged) { 2309 attachInfo.mViewScrollChanged = false; 2310 attachInfo.mTreeObserver.dispatchOnScrollChanged(); 2311 } 2312 2313 int yoff; 2314 boolean animating = mScroller != null && mScroller.computeScrollOffset(); 2315 if (animating) { 2316 yoff = mScroller.getCurrY(); 2317 } else { 2318 yoff = mScrollY; 2319 } 2320 if (mCurScrollY != yoff) { 2321 mCurScrollY = yoff; 2322 fullRedrawNeeded = true; 2323 } 2324 2325 final float appScale = attachInfo.mApplicationScale; 2326 final boolean scalingRequired = attachInfo.mScalingRequired; 2327 2328 int resizeAlpha = 0; 2329 if (mResizeBuffer != null) { 2330 long deltaTime = SystemClock.uptimeMillis() - mResizeBufferStartTime; 2331 if (deltaTime < mResizeBufferDuration) { 2332 float amt = deltaTime/(float) mResizeBufferDuration; 2333 amt = mResizeInterpolator.getInterpolation(amt); 2334 animating = true; 2335 resizeAlpha = 255 - (int)(amt*255); 2336 } else { 2337 disposeResizeBuffer(); 2338 } 2339 } 2340 2341 final Rect dirty = mDirty; 2342 if (mSurfaceHolder != null) { 2343 // The app owns the surface, we won't draw. 2344 dirty.setEmpty(); 2345 if (animating) { 2346 if (mScroller != null) { 2347 mScroller.abortAnimation(); 2348 } 2349 disposeResizeBuffer(); 2350 } 2351 return; 2352 } 2353 2354 if (fullRedrawNeeded) { 2355 attachInfo.mIgnoreDirtyState = true; 2356 dirty.set(0, 0, (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 2357 } 2358 2359 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2360 Log.v(TAG, "Draw " + mView + "/" 2361 + mWindowAttributes.getTitle() 2362 + ": dirty={" + dirty.left + "," + dirty.top 2363 + "," + dirty.right + "," + dirty.bottom + "} surface=" 2364 + surface + " surface.isValid()=" + surface.isValid() + ", appScale:" + 2365 appScale + ", width=" + mWidth + ", height=" + mHeight); 2366 } 2367 2368 attachInfo.mTreeObserver.dispatchOnDraw(); 2369 2370 if (!dirty.isEmpty() || mIsAnimating) { 2371 if (attachInfo.mHardwareRenderer != null && attachInfo.mHardwareRenderer.isEnabled()) { 2372 // Draw with hardware renderer. 2373 mIsAnimating = false; 2374 mHardwareYOffset = yoff; 2375 mResizeAlpha = resizeAlpha; 2376 2377 mCurrentDirty.set(dirty); 2378 dirty.setEmpty(); 2379 2380 mBlockResizeBuffer = false; 2381 attachInfo.mHardwareRenderer.draw(mView, attachInfo, this, 2382 animating ? null : mCurrentDirty); 2383 } else { 2384 // If we get here with a disabled & requested hardware renderer, something went 2385 // wrong (an invalidate posted right before we destroyed the hardware surface 2386 // for instance) so we should just bail out. Locking the surface with software 2387 // rendering at this point would lock it forever and prevent hardware renderer 2388 // from doing its job when it comes back. 2389 // Before we request a new frame we must however attempt to reinitiliaze the 2390 // hardware renderer if it's in requested state. This would happen after an 2391 // eglTerminate() for instance. 2392 if (attachInfo.mHardwareRenderer != null && 2393 !attachInfo.mHardwareRenderer.isEnabled() && 2394 attachInfo.mHardwareRenderer.isRequested()) { 2395 2396 try { 2397 attachInfo.mHardwareRenderer.initializeIfNeeded(mWidth, mHeight, 2398 mSurface); 2399 } catch (OutOfResourcesException e) { 2400 handleOutOfResourcesException(e); 2401 return; 2402 } 2403 2404 mFullRedrawNeeded = true; 2405 scheduleTraversals(); 2406 return; 2407 } 2408 2409 if (!drawSoftware(surface, attachInfo, yoff, scalingRequired, dirty)) { 2410 return; 2411 } 2412 } 2413 } 2414 2415 if (animating) { 2416 mFullRedrawNeeded = true; 2417 scheduleTraversals(); 2418 } 2419 } 2420 2421 /** 2422 * @return true if drawing was succesfull, false if an error occurred 2423 */ 2424 private boolean drawSoftware(Surface surface, AttachInfo attachInfo, int yoff, 2425 boolean scalingRequired, Rect dirty) { 2426 2427 // Draw with software renderer. 2428 Canvas canvas; 2429 try { 2430 int left = dirty.left; 2431 int top = dirty.top; 2432 int right = dirty.right; 2433 int bottom = dirty.bottom; 2434 2435 canvas = mSurface.lockCanvas(dirty); 2436 2437 // The dirty rectangle can be modified by Surface.lockCanvas() 2438 //noinspection ConstantConditions 2439 if (left != dirty.left || top != dirty.top || right != dirty.right || 2440 bottom != dirty.bottom) { 2441 attachInfo.mIgnoreDirtyState = true; 2442 } 2443 2444 // TODO: Do this in native 2445 canvas.setDensity(mDensity); 2446 } catch (Surface.OutOfResourcesException e) { 2447 handleOutOfResourcesException(e); 2448 return false; 2449 } catch (IllegalArgumentException e) { 2450 Log.e(TAG, "Could not lock surface", e); 2451 // Don't assume this is due to out of memory, it could be 2452 // something else, and if it is something else then we could 2453 // kill stuff (or ourself) for no reason. 2454 mLayoutRequested = true; // ask wm for a new surface next time. 2455 return false; 2456 } 2457 2458 try { 2459 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2460 Log.v(TAG, "Surface " + surface + " drawing to bitmap w=" 2461 + canvas.getWidth() + ", h=" + canvas.getHeight()); 2462 //canvas.drawARGB(255, 255, 0, 0); 2463 } 2464 2465 // If this bitmap's format includes an alpha channel, we 2466 // need to clear it before drawing so that the child will 2467 // properly re-composite its drawing on a transparent 2468 // background. This automatically respects the clip/dirty region 2469 // or 2470 // If we are applying an offset, we need to clear the area 2471 // where the offset doesn't appear to avoid having garbage 2472 // left in the blank areas. 2473 if (!canvas.isOpaque() || yoff != 0) { 2474 canvas.drawColor(0, PorterDuff.Mode.CLEAR); 2475 } 2476 2477 dirty.setEmpty(); 2478 mIsAnimating = false; 2479 attachInfo.mDrawingTime = SystemClock.uptimeMillis(); 2480 mView.mPrivateFlags |= View.PFLAG_DRAWN; 2481 2482 if (DEBUG_DRAW) { 2483 Context cxt = mView.getContext(); 2484 Log.i(TAG, "Drawing: package:" + cxt.getPackageName() + 2485 ", metrics=" + cxt.getResources().getDisplayMetrics() + 2486 ", compatibilityInfo=" + cxt.getResources().getCompatibilityInfo()); 2487 } 2488 try { 2489 canvas.translate(0, -yoff); 2490 if (mTranslator != null) { 2491 mTranslator.translateCanvas(canvas); 2492 } 2493 canvas.setScreenDensity(scalingRequired ? mNoncompatDensity : 0); 2494 attachInfo.mSetIgnoreDirtyState = false; 2495 2496 mView.draw(canvas); 2497 2498 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2499 } finally { 2500 if (!attachInfo.mSetIgnoreDirtyState) { 2501 // Only clear the flag if it was not set during the mView.draw() call 2502 attachInfo.mIgnoreDirtyState = false; 2503 } 2504 } 2505 } finally { 2506 try { 2507 surface.unlockCanvasAndPost(canvas); 2508 } catch (IllegalArgumentException e) { 2509 Log.e(TAG, "Could not unlock surface", e); 2510 mLayoutRequested = true; // ask wm for a new surface next time. 2511 //noinspection ReturnInsideFinallyBlock 2512 return false; 2513 } 2514 2515 if (LOCAL_LOGV) { 2516 Log.v(TAG, "Surface " + surface + " unlockCanvasAndPost"); 2517 } 2518 } 2519 return true; 2520 } 2521 2522 /** 2523 * We want to draw a highlight around the current accessibility focused. 2524 * Since adding a style for all possible view is not a viable option we 2525 * have this specialized drawing method. 2526 * 2527 * Note: We are doing this here to be able to draw the highlight for 2528 * virtual views in addition to real ones. 2529 * 2530 * @param canvas The canvas on which to draw. 2531 */ 2532 private void drawAccessibilityFocusedDrawableIfNeeded(Canvas canvas) { 2533 if (!mAttachInfo.mHasWindowFocus) { 2534 return; 2535 } 2536 2537 final AccessibilityManager manager = AccessibilityManager.getInstance(mView.mContext); 2538 if (!manager.isEnabled() || !manager.isTouchExplorationEnabled()) { 2539 return; 2540 } 2541 2542 final View host = mAccessibilityFocusedHost; 2543 if (host == null || host.mAttachInfo == null) { 2544 return; 2545 } 2546 2547 final Drawable drawable = getAccessibilityFocusedDrawable(); 2548 if (drawable == null) { 2549 return; 2550 } 2551 2552 final AccessibilityNodeProvider provider = host.getAccessibilityNodeProvider(); 2553 final Rect bounds = mView.mAttachInfo.mTmpInvalRect; 2554 if (provider == null) { 2555 host.getBoundsOnScreen(bounds); 2556 } else if (mAccessibilityFocusedVirtualView != null) { 2557 mAccessibilityFocusedVirtualView.getBoundsInScreen(bounds); 2558 } else { 2559 return; 2560 } 2561 2562 bounds.offset(-mAttachInfo.mWindowLeft, -mAttachInfo.mWindowTop); 2563 bounds.intersect(0, 0, mAttachInfo.mViewRootImpl.mWidth, mAttachInfo.mViewRootImpl.mHeight); 2564 drawable.setBounds(bounds); 2565 drawable.draw(canvas); 2566 } 2567 2568 private Drawable getAccessibilityFocusedDrawable() { 2569 if (mAttachInfo != null) { 2570 // Lazily load the accessibility focus drawable. 2571 if (mAttachInfo.mAccessibilityFocusDrawable == null) { 2572 TypedValue value = new TypedValue(); 2573 final boolean resolved = mView.mContext.getTheme().resolveAttribute( 2574 R.attr.accessibilityFocusedDrawable, value, true); 2575 if (resolved) { 2576 mAttachInfo.mAccessibilityFocusDrawable = 2577 mView.mContext.getDrawable(value.resourceId); 2578 } 2579 } 2580 return mAttachInfo.mAccessibilityFocusDrawable; 2581 } 2582 return null; 2583 } 2584 2585 /** 2586 * @hide 2587 */ 2588 public void setDrawDuringWindowsAnimating(boolean value) { 2589 mDrawDuringWindowsAnimating = value; 2590 if (value) { 2591 handleDispatchDoneAnimating(); 2592 } 2593 } 2594 2595 boolean scrollToRectOrFocus(Rect rectangle, boolean immediate) { 2596 final View.AttachInfo attachInfo = mAttachInfo; 2597 final Rect ci = attachInfo.mContentInsets; 2598 final Rect vi = attachInfo.mVisibleInsets; 2599 int scrollY = 0; 2600 boolean handled = false; 2601 2602 if (vi.left > ci.left || vi.top > ci.top 2603 || vi.right > ci.right || vi.bottom > ci.bottom) { 2604 // We'll assume that we aren't going to change the scroll 2605 // offset, since we want to avoid that unless it is actually 2606 // going to make the focus visible... otherwise we scroll 2607 // all over the place. 2608 scrollY = mScrollY; 2609 // We can be called for two different situations: during a draw, 2610 // to update the scroll position if the focus has changed (in which 2611 // case 'rectangle' is null), or in response to a 2612 // requestChildRectangleOnScreen() call (in which case 'rectangle' 2613 // is non-null and we just want to scroll to whatever that 2614 // rectangle is). 2615 final View focus = mView.findFocus(); 2616 if (focus == null) { 2617 return false; 2618 } 2619 View lastScrolledFocus = (mLastScrolledFocus != null) ? mLastScrolledFocus.get() : null; 2620 if (focus != lastScrolledFocus) { 2621 // If the focus has changed, then ignore any requests to scroll 2622 // to a rectangle; first we want to make sure the entire focus 2623 // view is visible. 2624 rectangle = null; 2625 } 2626 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Eval scroll: focus=" + focus 2627 + " rectangle=" + rectangle + " ci=" + ci 2628 + " vi=" + vi); 2629 if (focus == lastScrolledFocus && !mScrollMayChange && rectangle == null) { 2630 // Optimization: if the focus hasn't changed since last 2631 // time, and no layout has happened, then just leave things 2632 // as they are. 2633 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Keeping scroll y=" 2634 + mScrollY + " vi=" + vi.toShortString()); 2635 } else { 2636 // We need to determine if the currently focused view is 2637 // within the visible part of the window and, if not, apply 2638 // a pan so it can be seen. 2639 mLastScrolledFocus = new WeakReference<View>(focus); 2640 mScrollMayChange = false; 2641 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Need to scroll?"); 2642 // Try to find the rectangle from the focus view. 2643 if (focus.getGlobalVisibleRect(mVisRect, null)) { 2644 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Root w=" 2645 + mView.getWidth() + " h=" + mView.getHeight() 2646 + " ci=" + ci.toShortString() 2647 + " vi=" + vi.toShortString()); 2648 if (rectangle == null) { 2649 focus.getFocusedRect(mTempRect); 2650 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Focus " + focus 2651 + ": focusRect=" + mTempRect.toShortString()); 2652 if (mView instanceof ViewGroup) { 2653 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 2654 focus, mTempRect); 2655 } 2656 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2657 "Focus in window: focusRect=" 2658 + mTempRect.toShortString() 2659 + " visRect=" + mVisRect.toShortString()); 2660 } else { 2661 mTempRect.set(rectangle); 2662 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2663 "Request scroll to rect: " 2664 + mTempRect.toShortString() 2665 + " visRect=" + mVisRect.toShortString()); 2666 } 2667 if (mTempRect.intersect(mVisRect)) { 2668 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2669 "Focus window visible rect: " 2670 + mTempRect.toShortString()); 2671 if (mTempRect.height() > 2672 (mView.getHeight()-vi.top-vi.bottom)) { 2673 // If the focus simply is not going to fit, then 2674 // best is probably just to leave things as-is. 2675 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2676 "Too tall; leaving scrollY=" + scrollY); 2677 } else if ((mTempRect.top-scrollY) < vi.top) { 2678 scrollY -= vi.top - (mTempRect.top-scrollY); 2679 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2680 "Top covered; scrollY=" + scrollY); 2681 } else if ((mTempRect.bottom-scrollY) 2682 > (mView.getHeight()-vi.bottom)) { 2683 scrollY += (mTempRect.bottom-scrollY) 2684 - (mView.getHeight()-vi.bottom); 2685 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2686 "Bottom covered; scrollY=" + scrollY); 2687 } 2688 handled = true; 2689 } 2690 } 2691 } 2692 } 2693 2694 if (scrollY != mScrollY) { 2695 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Pan scroll changed: old=" 2696 + mScrollY + " , new=" + scrollY); 2697 if (!immediate && mResizeBuffer == null) { 2698 if (mScroller == null) { 2699 mScroller = new Scroller(mView.getContext()); 2700 } 2701 mScroller.startScroll(0, mScrollY, 0, scrollY-mScrollY); 2702 } else if (mScroller != null) { 2703 mScroller.abortAnimation(); 2704 } 2705 mScrollY = scrollY; 2706 } 2707 2708 return handled; 2709 } 2710 2711 /** 2712 * @hide 2713 */ 2714 public View getAccessibilityFocusedHost() { 2715 return mAccessibilityFocusedHost; 2716 } 2717 2718 /** 2719 * @hide 2720 */ 2721 public AccessibilityNodeInfo getAccessibilityFocusedVirtualView() { 2722 return mAccessibilityFocusedVirtualView; 2723 } 2724 2725 void setAccessibilityFocus(View view, AccessibilityNodeInfo node) { 2726 // If we have a virtual view with accessibility focus we need 2727 // to clear the focus and invalidate the virtual view bounds. 2728 if (mAccessibilityFocusedVirtualView != null) { 2729 2730 AccessibilityNodeInfo focusNode = mAccessibilityFocusedVirtualView; 2731 View focusHost = mAccessibilityFocusedHost; 2732 2733 // Wipe the state of the current accessibility focus since 2734 // the call into the provider to clear accessibility focus 2735 // will fire an accessibility event which will end up calling 2736 // this method and we want to have clean state when this 2737 // invocation happens. 2738 mAccessibilityFocusedHost = null; 2739 mAccessibilityFocusedVirtualView = null; 2740 2741 // Clear accessibility focus on the host after clearing state since 2742 // this method may be reentrant. 2743 focusHost.clearAccessibilityFocusNoCallbacks(); 2744 2745 AccessibilityNodeProvider provider = focusHost.getAccessibilityNodeProvider(); 2746 if (provider != null) { 2747 // Invalidate the area of the cleared accessibility focus. 2748 focusNode.getBoundsInParent(mTempRect); 2749 focusHost.invalidate(mTempRect); 2750 // Clear accessibility focus in the virtual node. 2751 final int virtualNodeId = AccessibilityNodeInfo.getVirtualDescendantId( 2752 focusNode.getSourceNodeId()); 2753 provider.performAction(virtualNodeId, 2754 AccessibilityNodeInfo.ACTION_CLEAR_ACCESSIBILITY_FOCUS, null); 2755 } 2756 focusNode.recycle(); 2757 } 2758 if (mAccessibilityFocusedHost != null) { 2759 // Clear accessibility focus in the view. 2760 mAccessibilityFocusedHost.clearAccessibilityFocusNoCallbacks(); 2761 } 2762 2763 // Set the new focus host and node. 2764 mAccessibilityFocusedHost = view; 2765 mAccessibilityFocusedVirtualView = node; 2766 } 2767 2768 @Override 2769 public void requestChildFocus(View child, View focused) { 2770 if (DEBUG_INPUT_RESIZE) { 2771 Log.v(TAG, "Request child focus: focus now " + focused); 2772 } 2773 checkThread(); 2774 scheduleTraversals(); 2775 } 2776 2777 @Override 2778 public void clearChildFocus(View child) { 2779 if (DEBUG_INPUT_RESIZE) { 2780 Log.v(TAG, "Clearing child focus"); 2781 } 2782 checkThread(); 2783 scheduleTraversals(); 2784 } 2785 2786 @Override 2787 public ViewParent getParentForAccessibility() { 2788 return null; 2789 } 2790 2791 @Override 2792 public void focusableViewAvailable(View v) { 2793 checkThread(); 2794 if (mView != null) { 2795 if (!mView.hasFocus()) { 2796 v.requestFocus(); 2797 } else { 2798 // the one case where will transfer focus away from the current one 2799 // is if the current view is a view group that prefers to give focus 2800 // to its children first AND the view is a descendant of it. 2801 View focused = mView.findFocus(); 2802 if (focused instanceof ViewGroup) { 2803 ViewGroup group = (ViewGroup) focused; 2804 if (group.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 2805 && isViewDescendantOf(v, focused)) { 2806 v.requestFocus(); 2807 } 2808 } 2809 } 2810 } 2811 } 2812 2813 @Override 2814 public void recomputeViewAttributes(View child) { 2815 checkThread(); 2816 if (mView == child) { 2817 mAttachInfo.mRecomputeGlobalAttributes = true; 2818 if (!mWillDrawSoon) { 2819 scheduleTraversals(); 2820 } 2821 } 2822 } 2823 2824 void dispatchDetachedFromWindow() { 2825 if (mView != null && mView.mAttachInfo != null) { 2826 mAttachInfo.mTreeObserver.dispatchOnWindowAttachedChange(false); 2827 mView.dispatchDetachedFromWindow(); 2828 } 2829 2830 mAccessibilityInteractionConnectionManager.ensureNoConnection(); 2831 mAccessibilityManager.removeAccessibilityStateChangeListener( 2832 mAccessibilityInteractionConnectionManager); 2833 removeSendWindowContentChangedCallback(); 2834 2835 destroyHardwareRenderer(); 2836 2837 setAccessibilityFocus(null, null); 2838 2839 mView.assignParent(null); 2840 mView = null; 2841 mAttachInfo.mRootView = null; 2842 2843 mSurface.release(); 2844 2845 if (mInputQueueCallback != null && mInputQueue != null) { 2846 mInputQueueCallback.onInputQueueDestroyed(mInputQueue); 2847 mInputQueue.dispose(); 2848 mInputQueueCallback = null; 2849 mInputQueue = null; 2850 } 2851 if (mInputEventReceiver != null) { 2852 mInputEventReceiver.dispose(); 2853 mInputEventReceiver = null; 2854 } 2855 try { 2856 mWindowSession.remove(mWindow); 2857 } catch (RemoteException e) { 2858 } 2859 2860 // Dispose the input channel after removing the window so the Window Manager 2861 // doesn't interpret the input channel being closed as an abnormal termination. 2862 if (mInputChannel != null) { 2863 mInputChannel.dispose(); 2864 mInputChannel = null; 2865 } 2866 2867 unscheduleTraversals(); 2868 } 2869 2870 void updateConfiguration(Configuration config, boolean force) { 2871 if (DEBUG_CONFIGURATION) Log.v(TAG, 2872 "Applying new config to window " 2873 + mWindowAttributes.getTitle() 2874 + ": " + config); 2875 2876 CompatibilityInfo ci = mDisplayAdjustments.getCompatibilityInfo(); 2877 if (!ci.equals(CompatibilityInfo.DEFAULT_COMPATIBILITY_INFO)) { 2878 config = new Configuration(config); 2879 ci.applyToConfiguration(mNoncompatDensity, config); 2880 } 2881 2882 synchronized (sConfigCallbacks) { 2883 for (int i=sConfigCallbacks.size()-1; i>=0; i--) { 2884 sConfigCallbacks.get(i).onConfigurationChanged(config); 2885 } 2886 } 2887 if (mView != null) { 2888 // At this point the resources have been updated to 2889 // have the most recent config, whatever that is. Use 2890 // the one in them which may be newer. 2891 config = mView.getResources().getConfiguration(); 2892 if (force || mLastConfiguration.diff(config) != 0) { 2893 final int lastLayoutDirection = mLastConfiguration.getLayoutDirection(); 2894 final int currentLayoutDirection = config.getLayoutDirection(); 2895 mLastConfiguration.setTo(config); 2896 if (lastLayoutDirection != currentLayoutDirection && 2897 mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 2898 mView.setLayoutDirection(currentLayoutDirection); 2899 } 2900 mView.dispatchConfigurationChanged(config); 2901 } 2902 } 2903 } 2904 2905 /** 2906 * Return true if child is an ancestor of parent, (or equal to the parent). 2907 */ 2908 public static boolean isViewDescendantOf(View child, View parent) { 2909 if (child == parent) { 2910 return true; 2911 } 2912 2913 final ViewParent theParent = child.getParent(); 2914 return (theParent instanceof ViewGroup) && isViewDescendantOf((View) theParent, parent); 2915 } 2916 2917 private static void forceLayout(View view) { 2918 view.forceLayout(); 2919 if (view instanceof ViewGroup) { 2920 ViewGroup group = (ViewGroup) view; 2921 final int count = group.getChildCount(); 2922 for (int i = 0; i < count; i++) { 2923 forceLayout(group.getChildAt(i)); 2924 } 2925 } 2926 } 2927 2928 private final static int MSG_INVALIDATE = 1; 2929 private final static int MSG_INVALIDATE_RECT = 2; 2930 private final static int MSG_DIE = 3; 2931 private final static int MSG_RESIZED = 4; 2932 private final static int MSG_RESIZED_REPORT = 5; 2933 private final static int MSG_WINDOW_FOCUS_CHANGED = 6; 2934 private final static int MSG_DISPATCH_INPUT_EVENT = 7; 2935 private final static int MSG_DISPATCH_APP_VISIBILITY = 8; 2936 private final static int MSG_DISPATCH_GET_NEW_SURFACE = 9; 2937 private final static int MSG_DISPATCH_KEY_FROM_IME = 11; 2938 private final static int MSG_FINISH_INPUT_CONNECTION = 12; 2939 private final static int MSG_CHECK_FOCUS = 13; 2940 private final static int MSG_CLOSE_SYSTEM_DIALOGS = 14; 2941 private final static int MSG_DISPATCH_DRAG_EVENT = 15; 2942 private final static int MSG_DISPATCH_DRAG_LOCATION_EVENT = 16; 2943 private final static int MSG_DISPATCH_SYSTEM_UI_VISIBILITY = 17; 2944 private final static int MSG_UPDATE_CONFIGURATION = 18; 2945 private final static int MSG_PROCESS_INPUT_EVENTS = 19; 2946 private final static int MSG_DISPATCH_SCREEN_STATE = 20; 2947 private final static int MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST = 21; 2948 private final static int MSG_DISPATCH_DONE_ANIMATING = 22; 2949 private final static int MSG_INVALIDATE_WORLD = 23; 2950 private final static int MSG_WINDOW_MOVED = 24; 2951 private final static int MSG_FLUSH_LAYER_UPDATES = 25; 2952 2953 final class ViewRootHandler extends Handler { 2954 @Override 2955 public String getMessageName(Message message) { 2956 switch (message.what) { 2957 case MSG_INVALIDATE: 2958 return "MSG_INVALIDATE"; 2959 case MSG_INVALIDATE_RECT: 2960 return "MSG_INVALIDATE_RECT"; 2961 case MSG_DIE: 2962 return "MSG_DIE"; 2963 case MSG_RESIZED: 2964 return "MSG_RESIZED"; 2965 case MSG_RESIZED_REPORT: 2966 return "MSG_RESIZED_REPORT"; 2967 case MSG_WINDOW_FOCUS_CHANGED: 2968 return "MSG_WINDOW_FOCUS_CHANGED"; 2969 case MSG_DISPATCH_INPUT_EVENT: 2970 return "MSG_DISPATCH_INPUT_EVENT"; 2971 case MSG_DISPATCH_APP_VISIBILITY: 2972 return "MSG_DISPATCH_APP_VISIBILITY"; 2973 case MSG_DISPATCH_GET_NEW_SURFACE: 2974 return "MSG_DISPATCH_GET_NEW_SURFACE"; 2975 case MSG_DISPATCH_KEY_FROM_IME: 2976 return "MSG_DISPATCH_KEY_FROM_IME"; 2977 case MSG_FINISH_INPUT_CONNECTION: 2978 return "MSG_FINISH_INPUT_CONNECTION"; 2979 case MSG_CHECK_FOCUS: 2980 return "MSG_CHECK_FOCUS"; 2981 case MSG_CLOSE_SYSTEM_DIALOGS: 2982 return "MSG_CLOSE_SYSTEM_DIALOGS"; 2983 case MSG_DISPATCH_DRAG_EVENT: 2984 return "MSG_DISPATCH_DRAG_EVENT"; 2985 case MSG_DISPATCH_DRAG_LOCATION_EVENT: 2986 return "MSG_DISPATCH_DRAG_LOCATION_EVENT"; 2987 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: 2988 return "MSG_DISPATCH_SYSTEM_UI_VISIBILITY"; 2989 case MSG_UPDATE_CONFIGURATION: 2990 return "MSG_UPDATE_CONFIGURATION"; 2991 case MSG_PROCESS_INPUT_EVENTS: 2992 return "MSG_PROCESS_INPUT_EVENTS"; 2993 case MSG_DISPATCH_SCREEN_STATE: 2994 return "MSG_DISPATCH_SCREEN_STATE"; 2995 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: 2996 return "MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST"; 2997 case MSG_DISPATCH_DONE_ANIMATING: 2998 return "MSG_DISPATCH_DONE_ANIMATING"; 2999 case MSG_WINDOW_MOVED: 3000 return "MSG_WINDOW_MOVED"; 3001 case MSG_FLUSH_LAYER_UPDATES: 3002 return "MSG_FLUSH_LAYER_UPDATES"; 3003 } 3004 return super.getMessageName(message); 3005 } 3006 3007 @Override 3008 public void handleMessage(Message msg) { 3009 switch (msg.what) { 3010 case MSG_INVALIDATE: 3011 ((View) msg.obj).invalidate(); 3012 break; 3013 case MSG_INVALIDATE_RECT: 3014 final View.AttachInfo.InvalidateInfo info = (View.AttachInfo.InvalidateInfo) msg.obj; 3015 info.target.invalidate(info.left, info.top, info.right, info.bottom); 3016 info.recycle(); 3017 break; 3018 case MSG_PROCESS_INPUT_EVENTS: 3019 mProcessInputEventsScheduled = false; 3020 doProcessInputEvents(); 3021 break; 3022 case MSG_DISPATCH_APP_VISIBILITY: 3023 handleAppVisibility(msg.arg1 != 0); 3024 break; 3025 case MSG_DISPATCH_GET_NEW_SURFACE: 3026 handleGetNewSurface(); 3027 break; 3028 case MSG_RESIZED: { 3029 // Recycled in the fall through... 3030 SomeArgs args = (SomeArgs) msg.obj; 3031 if (mWinFrame.equals(args.arg1) 3032 && mPendingOverscanInsets.equals(args.arg5) 3033 && mPendingContentInsets.equals(args.arg2) 3034 && mPendingVisibleInsets.equals(args.arg3) 3035 && args.arg4 == null) { 3036 break; 3037 } 3038 } // fall through... 3039 case MSG_RESIZED_REPORT: 3040 if (mAdded) { 3041 SomeArgs args = (SomeArgs) msg.obj; 3042 3043 Configuration config = (Configuration) args.arg4; 3044 if (config != null) { 3045 updateConfiguration(config, false); 3046 } 3047 3048 mWinFrame.set((Rect) args.arg1); 3049 mPendingOverscanInsets.set((Rect) args.arg5); 3050 mPendingContentInsets.set((Rect) args.arg2); 3051 mPendingVisibleInsets.set((Rect) args.arg3); 3052 3053 args.recycle(); 3054 3055 if (msg.what == MSG_RESIZED_REPORT) { 3056 mReportNextDraw = true; 3057 } 3058 3059 if (mView != null) { 3060 forceLayout(mView); 3061 } 3062 3063 requestLayout(); 3064 } 3065 break; 3066 case MSG_WINDOW_MOVED: 3067 if (mAdded) { 3068 final int w = mWinFrame.width(); 3069 final int h = mWinFrame.height(); 3070 final int l = msg.arg1; 3071 final int t = msg.arg2; 3072 mWinFrame.left = l; 3073 mWinFrame.right = l + w; 3074 mWinFrame.top = t; 3075 mWinFrame.bottom = t + h; 3076 3077 if (mView != null) { 3078 forceLayout(mView); 3079 } 3080 requestLayout(); 3081 } 3082 break; 3083 case MSG_WINDOW_FOCUS_CHANGED: { 3084 if (mAdded) { 3085 boolean hasWindowFocus = msg.arg1 != 0; 3086 mAttachInfo.mHasWindowFocus = hasWindowFocus; 3087 3088 profileRendering(hasWindowFocus); 3089 3090 if (hasWindowFocus) { 3091 boolean inTouchMode = msg.arg2 != 0; 3092 ensureTouchModeLocally(inTouchMode); 3093 3094 if (mAttachInfo.mHardwareRenderer != null && mSurface.isValid()){ 3095 mFullRedrawNeeded = true; 3096 try { 3097 mAttachInfo.mHardwareRenderer.initializeIfNeeded( 3098 mWidth, mHeight, mSurface); 3099 } catch (OutOfResourcesException e) { 3100 Log.e(TAG, "OutOfResourcesException locking surface", e); 3101 try { 3102 if (!mWindowSession.outOfMemory(mWindow)) { 3103 Slog.w(TAG, "No processes killed for memory; killing self"); 3104 Process.killProcess(Process.myPid()); 3105 } 3106 } catch (RemoteException ex) { 3107 } 3108 // Retry in a bit. 3109 sendMessageDelayed(obtainMessage(msg.what, msg.arg1, msg.arg2), 500); 3110 return; 3111 } 3112 } 3113 } 3114 3115 mLastWasImTarget = WindowManager.LayoutParams 3116 .mayUseInputMethod(mWindowAttributes.flags); 3117 3118 InputMethodManager imm = InputMethodManager.peekInstance(); 3119 if (mView != null) { 3120 if (hasWindowFocus && imm != null && mLastWasImTarget && 3121 !isInLocalFocusMode()) { 3122 imm.startGettingWindowFocus(mView); 3123 } 3124 mAttachInfo.mKeyDispatchState.reset(); 3125 mView.dispatchWindowFocusChanged(hasWindowFocus); 3126 mAttachInfo.mTreeObserver.dispatchOnWindowFocusChange(hasWindowFocus); 3127 } 3128 3129 // Note: must be done after the focus change callbacks, 3130 // so all of the view state is set up correctly. 3131 if (hasWindowFocus) { 3132 if (imm != null && mLastWasImTarget && !isInLocalFocusMode()) { 3133 imm.onWindowFocus(mView, mView.findFocus(), 3134 mWindowAttributes.softInputMode, 3135 !mHasHadWindowFocus, mWindowAttributes.flags); 3136 } 3137 // Clear the forward bit. We can just do this directly, since 3138 // the window manager doesn't care about it. 3139 mWindowAttributes.softInputMode &= 3140 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3141 ((WindowManager.LayoutParams)mView.getLayoutParams()) 3142 .softInputMode &= 3143 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3144 mHasHadWindowFocus = true; 3145 } 3146 3147 if (mView != null && mAccessibilityManager.isEnabled()) { 3148 if (hasWindowFocus) { 3149 mView.sendAccessibilityEvent( 3150 AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 3151 } 3152 } 3153 } 3154 } break; 3155 case MSG_DIE: 3156 doDie(); 3157 break; 3158 case MSG_DISPATCH_INPUT_EVENT: { 3159 InputEvent event = (InputEvent)msg.obj; 3160 enqueueInputEvent(event, null, 0, true); 3161 } break; 3162 case MSG_DISPATCH_KEY_FROM_IME: { 3163 if (LOCAL_LOGV) Log.v( 3164 TAG, "Dispatching key " 3165 + msg.obj + " from IME to " + mView); 3166 KeyEvent event = (KeyEvent)msg.obj; 3167 if ((event.getFlags()&KeyEvent.FLAG_FROM_SYSTEM) != 0) { 3168 // The IME is trying to say this event is from the 3169 // system! Bad bad bad! 3170 //noinspection UnusedAssignment 3171 event = KeyEvent.changeFlags(event, event.getFlags() & ~KeyEvent.FLAG_FROM_SYSTEM); 3172 } 3173 enqueueInputEvent(event, null, QueuedInputEvent.FLAG_DELIVER_POST_IME, true); 3174 } break; 3175 case MSG_FINISH_INPUT_CONNECTION: { 3176 InputMethodManager imm = InputMethodManager.peekInstance(); 3177 if (imm != null) { 3178 imm.reportFinishInputConnection((InputConnection)msg.obj); 3179 } 3180 } break; 3181 case MSG_CHECK_FOCUS: { 3182 InputMethodManager imm = InputMethodManager.peekInstance(); 3183 if (imm != null) { 3184 imm.checkFocus(); 3185 } 3186 } break; 3187 case MSG_CLOSE_SYSTEM_DIALOGS: { 3188 if (mView != null) { 3189 mView.onCloseSystemDialogs((String)msg.obj); 3190 } 3191 } break; 3192 case MSG_DISPATCH_DRAG_EVENT: 3193 case MSG_DISPATCH_DRAG_LOCATION_EVENT: { 3194 DragEvent event = (DragEvent)msg.obj; 3195 event.mLocalState = mLocalDragState; // only present when this app called startDrag() 3196 handleDragEvent(event); 3197 } break; 3198 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: { 3199 handleDispatchSystemUiVisibilityChanged((SystemUiVisibilityInfo) msg.obj); 3200 } break; 3201 case MSG_UPDATE_CONFIGURATION: { 3202 Configuration config = (Configuration)msg.obj; 3203 if (config.isOtherSeqNewer(mLastConfiguration)) { 3204 config = mLastConfiguration; 3205 } 3206 updateConfiguration(config, false); 3207 } break; 3208 case MSG_DISPATCH_SCREEN_STATE: { 3209 if (mView != null) { 3210 handleScreenStateChange(msg.arg1 == 1); 3211 } 3212 } break; 3213 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: { 3214 setAccessibilityFocus(null, null); 3215 } break; 3216 case MSG_DISPATCH_DONE_ANIMATING: { 3217 handleDispatchDoneAnimating(); 3218 } break; 3219 case MSG_INVALIDATE_WORLD: { 3220 if (mView != null) { 3221 invalidateWorld(mView); 3222 } 3223 } break; 3224 case MSG_FLUSH_LAYER_UPDATES: { 3225 flushHardwareLayerUpdates(); 3226 } break; 3227 } 3228 } 3229 } 3230 3231 final ViewRootHandler mHandler = new ViewRootHandler(); 3232 3233 /** 3234 * Something in the current window tells us we need to change the touch mode. For 3235 * example, we are not in touch mode, and the user touches the screen. 3236 * 3237 * If the touch mode has changed, tell the window manager, and handle it locally. 3238 * 3239 * @param inTouchMode Whether we want to be in touch mode. 3240 * @return True if the touch mode changed and focus changed was changed as a result 3241 */ 3242 boolean ensureTouchMode(boolean inTouchMode) { 3243 if (DBG) Log.d("touchmode", "ensureTouchMode(" + inTouchMode + "), current " 3244 + "touch mode is " + mAttachInfo.mInTouchMode); 3245 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3246 3247 // tell the window manager 3248 try { 3249 if (!isInLocalFocusMode()) { 3250 mWindowSession.setInTouchMode(inTouchMode); 3251 } 3252 } catch (RemoteException e) { 3253 throw new RuntimeException(e); 3254 } 3255 3256 // handle the change 3257 return ensureTouchModeLocally(inTouchMode); 3258 } 3259 3260 /** 3261 * Ensure that the touch mode for this window is set, and if it is changing, 3262 * take the appropriate action. 3263 * @param inTouchMode Whether we want to be in touch mode. 3264 * @return True if the touch mode changed and focus changed was changed as a result 3265 */ 3266 private boolean ensureTouchModeLocally(boolean inTouchMode) { 3267 if (DBG) Log.d("touchmode", "ensureTouchModeLocally(" + inTouchMode + "), current " 3268 + "touch mode is " + mAttachInfo.mInTouchMode); 3269 3270 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3271 3272 mAttachInfo.mInTouchMode = inTouchMode; 3273 mAttachInfo.mTreeObserver.dispatchOnTouchModeChanged(inTouchMode); 3274 3275 return (inTouchMode) ? enterTouchMode() : leaveTouchMode(); 3276 } 3277 3278 private boolean enterTouchMode() { 3279 if (mView != null && mView.hasFocus()) { 3280 // note: not relying on mFocusedView here because this could 3281 // be when the window is first being added, and mFocused isn't 3282 // set yet. 3283 final View focused = mView.findFocus(); 3284 if (focused != null && !focused.isFocusableInTouchMode()) { 3285 final ViewGroup ancestorToTakeFocus = findAncestorToTakeFocusInTouchMode(focused); 3286 if (ancestorToTakeFocus != null) { 3287 // there is an ancestor that wants focus after its 3288 // descendants that is focusable in touch mode.. give it 3289 // focus 3290 return ancestorToTakeFocus.requestFocus(); 3291 } else { 3292 // There's nothing to focus. Clear and propagate through the 3293 // hierarchy, but don't attempt to place new focus. 3294 focused.clearFocusInternal(null, true, false); 3295 return true; 3296 } 3297 } 3298 } 3299 return false; 3300 } 3301 3302 /** 3303 * Find an ancestor of focused that wants focus after its descendants and is 3304 * focusable in touch mode. 3305 * @param focused The currently focused view. 3306 * @return An appropriate view, or null if no such view exists. 3307 */ 3308 private static ViewGroup findAncestorToTakeFocusInTouchMode(View focused) { 3309 ViewParent parent = focused.getParent(); 3310 while (parent instanceof ViewGroup) { 3311 final ViewGroup vgParent = (ViewGroup) parent; 3312 if (vgParent.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 3313 && vgParent.isFocusableInTouchMode()) { 3314 return vgParent; 3315 } 3316 if (vgParent.isRootNamespace()) { 3317 return null; 3318 } else { 3319 parent = vgParent.getParent(); 3320 } 3321 } 3322 return null; 3323 } 3324 3325 private boolean leaveTouchMode() { 3326 if (mView != null) { 3327 if (mView.hasFocus()) { 3328 View focusedView = mView.findFocus(); 3329 if (!(focusedView instanceof ViewGroup)) { 3330 // some view has focus, let it keep it 3331 return false; 3332 } else if (((ViewGroup) focusedView).getDescendantFocusability() != 3333 ViewGroup.FOCUS_AFTER_DESCENDANTS) { 3334 // some view group has focus, and doesn't prefer its children 3335 // over itself for focus, so let them keep it. 3336 return false; 3337 } 3338 } 3339 3340 // find the best view to give focus to in this brave new non-touch-mode 3341 // world 3342 final View focused = focusSearch(null, View.FOCUS_DOWN); 3343 if (focused != null) { 3344 return focused.requestFocus(View.FOCUS_DOWN); 3345 } 3346 } 3347 return false; 3348 } 3349 3350 /** 3351 * Base class for implementing a stage in the chain of responsibility 3352 * for processing input events. 3353 * <p> 3354 * Events are delivered to the stage by the {@link #deliver} method. The stage 3355 * then has the choice of finishing the event or forwarding it to the next stage. 3356 * </p> 3357 */ 3358 abstract class InputStage { 3359 private final InputStage mNext; 3360 3361 protected static final int FORWARD = 0; 3362 protected static final int FINISH_HANDLED = 1; 3363 protected static final int FINISH_NOT_HANDLED = 2; 3364 3365 /** 3366 * Creates an input stage. 3367 * @param next The next stage to which events should be forwarded. 3368 */ 3369 public InputStage(InputStage next) { 3370 mNext = next; 3371 } 3372 3373 /** 3374 * Delivers an event to be processed. 3375 */ 3376 public final void deliver(QueuedInputEvent q) { 3377 if ((q.mFlags & QueuedInputEvent.FLAG_FINISHED) != 0) { 3378 forward(q); 3379 } else if (shouldDropInputEvent(q)) { 3380 finish(q, false); 3381 } else { 3382 apply(q, onProcess(q)); 3383 } 3384 } 3385 3386 /** 3387 * Marks the the input event as finished then forwards it to the next stage. 3388 */ 3389 protected void finish(QueuedInputEvent q, boolean handled) { 3390 q.mFlags |= QueuedInputEvent.FLAG_FINISHED; 3391 if (handled) { 3392 q.mFlags |= QueuedInputEvent.FLAG_FINISHED_HANDLED; 3393 } 3394 forward(q); 3395 } 3396 3397 /** 3398 * Forwards the event to the next stage. 3399 */ 3400 protected void forward(QueuedInputEvent q) { 3401 onDeliverToNext(q); 3402 } 3403 3404 /** 3405 * Applies a result code from {@link #onProcess} to the specified event. 3406 */ 3407 protected void apply(QueuedInputEvent q, int result) { 3408 if (result == FORWARD) { 3409 forward(q); 3410 } else if (result == FINISH_HANDLED) { 3411 finish(q, true); 3412 } else if (result == FINISH_NOT_HANDLED) { 3413 finish(q, false); 3414 } else { 3415 throw new IllegalArgumentException("Invalid result: " + result); 3416 } 3417 } 3418 3419 /** 3420 * Called when an event is ready to be processed. 3421 * @return A result code indicating how the event was handled. 3422 */ 3423 protected int onProcess(QueuedInputEvent q) { 3424 return FORWARD; 3425 } 3426 3427 /** 3428 * Called when an event is being delivered to the next stage. 3429 */ 3430 protected void onDeliverToNext(QueuedInputEvent q) { 3431 if (mNext != null) { 3432 mNext.deliver(q); 3433 } else { 3434 finishInputEvent(q); 3435 } 3436 } 3437 3438 protected boolean shouldDropInputEvent(QueuedInputEvent q) { 3439 if (mView == null || !mAdded) { 3440 Slog.w(TAG, "Dropping event due to root view being removed: " + q.mEvent); 3441 return true; 3442 } else if (!mAttachInfo.mHasWindowFocus && 3443 !q.mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER) && 3444 !isTerminalInputEvent(q.mEvent)) { 3445 // If this is a focused event and the window doesn't currently have input focus, 3446 // then drop this event. This could be an event that came back from the previous 3447 // stage but the window has lost focus in the meantime. 3448 Slog.w(TAG, "Dropping event due to no window focus: " + q.mEvent); 3449 return true; 3450 } 3451 return false; 3452 } 3453 3454 void dump(String prefix, PrintWriter writer) { 3455 if (mNext != null) { 3456 mNext.dump(prefix, writer); 3457 } 3458 } 3459 } 3460 3461 /** 3462 * Base class for implementing an input pipeline stage that supports 3463 * asynchronous and out-of-order processing of input events. 3464 * <p> 3465 * In addition to what a normal input stage can do, an asynchronous 3466 * input stage may also defer an input event that has been delivered to it 3467 * and finish or forward it later. 3468 * </p> 3469 */ 3470 abstract class AsyncInputStage extends InputStage { 3471 private final String mTraceCounter; 3472 3473 private QueuedInputEvent mQueueHead; 3474 private QueuedInputEvent mQueueTail; 3475 private int mQueueLength; 3476 3477 protected static final int DEFER = 3; 3478 3479 /** 3480 * Creates an asynchronous input stage. 3481 * @param next The next stage to which events should be forwarded. 3482 * @param traceCounter The name of a counter to record the size of 3483 * the queue of pending events. 3484 */ 3485 public AsyncInputStage(InputStage next, String traceCounter) { 3486 super(next); 3487 mTraceCounter = traceCounter; 3488 } 3489 3490 /** 3491 * Marks the event as deferred, which is to say that it will be handled 3492 * asynchronously. The caller is responsible for calling {@link #forward} 3493 * or {@link #finish} later when it is done handling the event. 3494 */ 3495 protected void defer(QueuedInputEvent q) { 3496 q.mFlags |= QueuedInputEvent.FLAG_DEFERRED; 3497 enqueue(q); 3498 } 3499 3500 @Override 3501 protected void forward(QueuedInputEvent q) { 3502 // Clear the deferred flag. 3503 q.mFlags &= ~QueuedInputEvent.FLAG_DEFERRED; 3504 3505 // Fast path if the queue is empty. 3506 QueuedInputEvent curr = mQueueHead; 3507 if (curr == null) { 3508 super.forward(q); 3509 return; 3510 } 3511 3512 // Determine whether the event must be serialized behind any others 3513 // before it can be delivered to the next stage. This is done because 3514 // deferred events might be handled out of order by the stage. 3515 final int deviceId = q.mEvent.getDeviceId(); 3516 QueuedInputEvent prev = null; 3517 boolean blocked = false; 3518 while (curr != null && curr != q) { 3519 if (!blocked && deviceId == curr.mEvent.getDeviceId()) { 3520 blocked = true; 3521 } 3522 prev = curr; 3523 curr = curr.mNext; 3524 } 3525 3526 // If the event is blocked, then leave it in the queue to be delivered later. 3527 // Note that the event might not yet be in the queue if it was not previously 3528 // deferred so we will enqueue it if needed. 3529 if (blocked) { 3530 if (curr == null) { 3531 enqueue(q); 3532 } 3533 return; 3534 } 3535 3536 // The event is not blocked. Deliver it immediately. 3537 if (curr != null) { 3538 curr = curr.mNext; 3539 dequeue(q, prev); 3540 } 3541 super.forward(q); 3542 3543 // Dequeuing this event may have unblocked successors. Deliver them. 3544 while (curr != null) { 3545 if (deviceId == curr.mEvent.getDeviceId()) { 3546 if ((curr.mFlags & QueuedInputEvent.FLAG_DEFERRED) != 0) { 3547 break; 3548 } 3549 QueuedInputEvent next = curr.mNext; 3550 dequeue(curr, prev); 3551 super.forward(curr); 3552 curr = next; 3553 } else { 3554 prev = curr; 3555 curr = curr.mNext; 3556 } 3557 } 3558 } 3559 3560 @Override 3561 protected void apply(QueuedInputEvent q, int result) { 3562 if (result == DEFER) { 3563 defer(q); 3564 } else { 3565 super.apply(q, result); 3566 } 3567 } 3568 3569 private void enqueue(QueuedInputEvent q) { 3570 if (mQueueTail == null) { 3571 mQueueHead = q; 3572 mQueueTail = q; 3573 } else { 3574 mQueueTail.mNext = q; 3575 mQueueTail = q; 3576 } 3577 3578 mQueueLength += 1; 3579 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 3580 } 3581 3582 private void dequeue(QueuedInputEvent q, QueuedInputEvent prev) { 3583 if (prev == null) { 3584 mQueueHead = q.mNext; 3585 } else { 3586 prev.mNext = q.mNext; 3587 } 3588 if (mQueueTail == q) { 3589 mQueueTail = prev; 3590 } 3591 q.mNext = null; 3592 3593 mQueueLength -= 1; 3594 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mTraceCounter, mQueueLength); 3595 } 3596 3597 @Override 3598 void dump(String prefix, PrintWriter writer) { 3599 writer.print(prefix); 3600 writer.print(getClass().getName()); 3601 writer.print(": mQueueLength="); 3602 writer.println(mQueueLength); 3603 3604 super.dump(prefix, writer); 3605 } 3606 } 3607 3608 /** 3609 * Delivers pre-ime input events to a native activity. 3610 * Does not support pointer events. 3611 */ 3612 final class NativePreImeInputStage extends AsyncInputStage 3613 implements InputQueue.FinishedInputEventCallback { 3614 public NativePreImeInputStage(InputStage next, String traceCounter) { 3615 super(next, traceCounter); 3616 } 3617 3618 @Override 3619 protected int onProcess(QueuedInputEvent q) { 3620 if (mInputQueue != null && q.mEvent instanceof KeyEvent) { 3621 mInputQueue.sendInputEvent(q.mEvent, q, true, this); 3622 return DEFER; 3623 } 3624 return FORWARD; 3625 } 3626 3627 @Override 3628 public void onFinishedInputEvent(Object token, boolean handled) { 3629 QueuedInputEvent q = (QueuedInputEvent)token; 3630 if (handled) { 3631 finish(q, true); 3632 return; 3633 } 3634 forward(q); 3635 } 3636 } 3637 3638 /** 3639 * Delivers pre-ime input events to the view hierarchy. 3640 * Does not support pointer events. 3641 */ 3642 final class ViewPreImeInputStage extends InputStage { 3643 public ViewPreImeInputStage(InputStage next) { 3644 super(next); 3645 } 3646 3647 @Override 3648 protected int onProcess(QueuedInputEvent q) { 3649 if (q.mEvent instanceof KeyEvent) { 3650 return processKeyEvent(q); 3651 } 3652 return FORWARD; 3653 } 3654 3655 private int processKeyEvent(QueuedInputEvent q) { 3656 final KeyEvent event = (KeyEvent)q.mEvent; 3657 if (mView.dispatchKeyEventPreIme(event)) { 3658 return FINISH_HANDLED; 3659 } 3660 return FORWARD; 3661 } 3662 } 3663 3664 /** 3665 * Delivers input events to the ime. 3666 * Does not support pointer events. 3667 */ 3668 final class ImeInputStage extends AsyncInputStage 3669 implements InputMethodManager.FinishedInputEventCallback { 3670 public ImeInputStage(InputStage next, String traceCounter) { 3671 super(next, traceCounter); 3672 } 3673 3674 @Override 3675 protected int onProcess(QueuedInputEvent q) { 3676 if (mLastWasImTarget && !isInLocalFocusMode()) { 3677 InputMethodManager imm = InputMethodManager.peekInstance(); 3678 if (imm != null) { 3679 final InputEvent event = q.mEvent; 3680 if (DEBUG_IMF) Log.v(TAG, "Sending input event to IME: " + event); 3681 int result = imm.dispatchInputEvent(event, q, this, mHandler); 3682 if (result == InputMethodManager.DISPATCH_HANDLED) { 3683 return FINISH_HANDLED; 3684 } else if (result == InputMethodManager.DISPATCH_NOT_HANDLED) { 3685 return FINISH_NOT_HANDLED; 3686 } else { 3687 return DEFER; // callback will be invoked later 3688 } 3689 } 3690 } 3691 return FORWARD; 3692 } 3693 3694 @Override 3695 public void onFinishedInputEvent(Object token, boolean handled) { 3696 QueuedInputEvent q = (QueuedInputEvent)token; 3697 if (handled) { 3698 finish(q, true); 3699 return; 3700 } 3701 forward(q); 3702 } 3703 } 3704 3705 /** 3706 * Performs early processing of post-ime input events. 3707 */ 3708 final class EarlyPostImeInputStage extends InputStage { 3709 public EarlyPostImeInputStage(InputStage next) { 3710 super(next); 3711 } 3712 3713 @Override 3714 protected int onProcess(QueuedInputEvent q) { 3715 if (q.mEvent instanceof KeyEvent) { 3716 return processKeyEvent(q); 3717 } else { 3718 final int source = q.mEvent.getSource(); 3719 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 3720 return processPointerEvent(q); 3721 } 3722 } 3723 return FORWARD; 3724 } 3725 3726 private int processKeyEvent(QueuedInputEvent q) { 3727 final KeyEvent event = (KeyEvent)q.mEvent; 3728 3729 // If the key's purpose is to exit touch mode then we consume it 3730 // and consider it handled. 3731 if (checkForLeavingTouchModeAndConsume(event)) { 3732 return FINISH_HANDLED; 3733 } 3734 3735 // Make sure the fallback event policy sees all keys that will be 3736 // delivered to the view hierarchy. 3737 mFallbackEventHandler.preDispatchKeyEvent(event); 3738 return FORWARD; 3739 } 3740 3741 private int processPointerEvent(QueuedInputEvent q) { 3742 final MotionEvent event = (MotionEvent)q.mEvent; 3743 3744 // Translate the pointer event for compatibility, if needed. 3745 if (mTranslator != null) { 3746 mTranslator.translateEventInScreenToAppWindow(event); 3747 } 3748 3749 // Enter touch mode on down or scroll. 3750 final int action = event.getAction(); 3751 if (action == MotionEvent.ACTION_DOWN || action == MotionEvent.ACTION_SCROLL) { 3752 ensureTouchMode(true); 3753 } 3754 3755 // Offset the scroll position. 3756 if (mCurScrollY != 0) { 3757 event.offsetLocation(0, mCurScrollY); 3758 } 3759 3760 // Remember the touch position for possible drag-initiation. 3761 if (event.isTouchEvent()) { 3762 mLastTouchPoint.x = event.getRawX(); 3763 mLastTouchPoint.y = event.getRawY(); 3764 } 3765 return FORWARD; 3766 } 3767 } 3768 3769 /** 3770 * Delivers post-ime input events to a native activity. 3771 */ 3772 final class NativePostImeInputStage extends AsyncInputStage 3773 implements InputQueue.FinishedInputEventCallback { 3774 public NativePostImeInputStage(InputStage next, String traceCounter) { 3775 super(next, traceCounter); 3776 } 3777 3778 @Override 3779 protected int onProcess(QueuedInputEvent q) { 3780 if (mInputQueue != null) { 3781 mInputQueue.sendInputEvent(q.mEvent, q, false, this); 3782 return DEFER; 3783 } 3784 return FORWARD; 3785 } 3786 3787 @Override 3788 public void onFinishedInputEvent(Object token, boolean handled) { 3789 QueuedInputEvent q = (QueuedInputEvent)token; 3790 if (handled) { 3791 finish(q, true); 3792 return; 3793 } 3794 forward(q); 3795 } 3796 } 3797 3798 /** 3799 * Delivers post-ime input events to the view hierarchy. 3800 */ 3801 final class ViewPostImeInputStage extends InputStage { 3802 public ViewPostImeInputStage(InputStage next) { 3803 super(next); 3804 } 3805 3806 @Override 3807 protected int onProcess(QueuedInputEvent q) { 3808 if (q.mEvent instanceof KeyEvent) { 3809 return processKeyEvent(q); 3810 } else { 3811 // If delivering a new non-key event, make sure the window is 3812 // now allowed to start updating. 3813 handleDispatchDoneAnimating(); 3814 final int source = q.mEvent.getSource(); 3815 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 3816 return processPointerEvent(q); 3817 } else if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 3818 return processTrackballEvent(q); 3819 } else { 3820 return processGenericMotionEvent(q); 3821 } 3822 } 3823 } 3824 3825 private int processKeyEvent(QueuedInputEvent q) { 3826 final KeyEvent event = (KeyEvent)q.mEvent; 3827 3828 if (event.getAction() != KeyEvent.ACTION_UP) { 3829 // If delivering a new key event, make sure the window is 3830 // now allowed to start updating. 3831 handleDispatchDoneAnimating(); 3832 } 3833 3834 // Deliver the key to the view hierarchy. 3835 if (mView.dispatchKeyEvent(event)) { 3836 return FINISH_HANDLED; 3837 } 3838 3839 if (shouldDropInputEvent(q)) { 3840 return FINISH_NOT_HANDLED; 3841 } 3842 3843 // If the Control modifier is held, try to interpret the key as a shortcut. 3844 if (event.getAction() == KeyEvent.ACTION_DOWN 3845 && event.isCtrlPressed() 3846 && event.getRepeatCount() == 0 3847 && !KeyEvent.isModifierKey(event.getKeyCode())) { 3848 if (mView.dispatchKeyShortcutEvent(event)) { 3849 return FINISH_HANDLED; 3850 } 3851 if (shouldDropInputEvent(q)) { 3852 return FINISH_NOT_HANDLED; 3853 } 3854 } 3855 3856 // Apply the fallback event policy. 3857 if (mFallbackEventHandler.dispatchKeyEvent(event)) { 3858 return FINISH_HANDLED; 3859 } 3860 if (shouldDropInputEvent(q)) { 3861 return FINISH_NOT_HANDLED; 3862 } 3863 3864 // Handle automatic focus changes. 3865 if (event.getAction() == KeyEvent.ACTION_DOWN) { 3866 int direction = 0; 3867 switch (event.getKeyCode()) { 3868 case KeyEvent.KEYCODE_DPAD_LEFT: 3869 if (event.hasNoModifiers()) { 3870 direction = View.FOCUS_LEFT; 3871 } 3872 break; 3873 case KeyEvent.KEYCODE_DPAD_RIGHT: 3874 if (event.hasNoModifiers()) { 3875 direction = View.FOCUS_RIGHT; 3876 } 3877 break; 3878 case KeyEvent.KEYCODE_DPAD_UP: 3879 if (event.hasNoModifiers()) { 3880 direction = View.FOCUS_UP; 3881 } 3882 break; 3883 case KeyEvent.KEYCODE_DPAD_DOWN: 3884 if (event.hasNoModifiers()) { 3885 direction = View.FOCUS_DOWN; 3886 } 3887 break; 3888 case KeyEvent.KEYCODE_TAB: 3889 if (event.hasNoModifiers()) { 3890 direction = View.FOCUS_FORWARD; 3891 } else if (event.hasModifiers(KeyEvent.META_SHIFT_ON)) { 3892 direction = View.FOCUS_BACKWARD; 3893 } 3894 break; 3895 } 3896 if (direction != 0) { 3897 View focused = mView.findFocus(); 3898 if (focused != null) { 3899 View v = focused.focusSearch(direction); 3900 if (v != null && v != focused) { 3901 // do the math the get the interesting rect 3902 // of previous focused into the coord system of 3903 // newly focused view 3904 focused.getFocusedRect(mTempRect); 3905 if (mView instanceof ViewGroup) { 3906 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 3907 focused, mTempRect); 3908 ((ViewGroup) mView).offsetRectIntoDescendantCoords( 3909 v, mTempRect); 3910 } 3911 if (v.requestFocus(direction, mTempRect)) { 3912 playSoundEffect(SoundEffectConstants 3913 .getContantForFocusDirection(direction)); 3914 return FINISH_HANDLED; 3915 } 3916 } 3917 3918 // Give the focused view a last chance to handle the dpad key. 3919 if (mView.dispatchUnhandledMove(focused, direction)) { 3920 return FINISH_HANDLED; 3921 } 3922 } else { 3923 // find the best view to give focus to in this non-touch-mode with no-focus 3924 View v = focusSearch(null, direction); 3925 if (v != null && v.requestFocus(direction)) { 3926 return FINISH_HANDLED; 3927 } 3928 } 3929 } 3930 } 3931 return FORWARD; 3932 } 3933 3934 private int processPointerEvent(QueuedInputEvent q) { 3935 final MotionEvent event = (MotionEvent)q.mEvent; 3936 3937 if (mView.dispatchPointerEvent(event)) { 3938 return FINISH_HANDLED; 3939 } 3940 return FORWARD; 3941 } 3942 3943 private int processTrackballEvent(QueuedInputEvent q) { 3944 final MotionEvent event = (MotionEvent)q.mEvent; 3945 3946 if (mView.dispatchTrackballEvent(event)) { 3947 return FINISH_HANDLED; 3948 } 3949 return FORWARD; 3950 } 3951 3952 private int processGenericMotionEvent(QueuedInputEvent q) { 3953 final MotionEvent event = (MotionEvent)q.mEvent; 3954 3955 // Deliver the event to the view. 3956 if (mView.dispatchGenericMotionEvent(event)) { 3957 return FINISH_HANDLED; 3958 } 3959 return FORWARD; 3960 } 3961 } 3962 3963 /** 3964 * Performs synthesis of new input events from unhandled input events. 3965 */ 3966 final class SyntheticInputStage extends InputStage { 3967 private final SyntheticTrackballHandler mTrackball = new SyntheticTrackballHandler(); 3968 private final SyntheticJoystickHandler mJoystick = new SyntheticJoystickHandler(); 3969 private final SyntheticTouchNavigationHandler mTouchNavigation = 3970 new SyntheticTouchNavigationHandler(); 3971 3972 public SyntheticInputStage() { 3973 super(null); 3974 } 3975 3976 @Override 3977 protected int onProcess(QueuedInputEvent q) { 3978 q.mFlags |= QueuedInputEvent.FLAG_RESYNTHESIZED; 3979 if (q.mEvent instanceof MotionEvent) { 3980 final MotionEvent event = (MotionEvent)q.mEvent; 3981 final int source = event.getSource(); 3982 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 3983 mTrackball.process(event); 3984 return FINISH_HANDLED; 3985 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 3986 mJoystick.process(event); 3987 return FINISH_HANDLED; 3988 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 3989 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 3990 mTouchNavigation.process(event); 3991 return FINISH_HANDLED; 3992 } 3993 } 3994 return FORWARD; 3995 } 3996 3997 @Override 3998 protected void onDeliverToNext(QueuedInputEvent q) { 3999 if ((q.mFlags & QueuedInputEvent.FLAG_RESYNTHESIZED) == 0) { 4000 // Cancel related synthetic events if any prior stage has handled the event. 4001 if (q.mEvent instanceof MotionEvent) { 4002 final MotionEvent event = (MotionEvent)q.mEvent; 4003 final int source = event.getSource(); 4004 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 4005 mTrackball.cancel(event); 4006 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 4007 mJoystick.cancel(event); 4008 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 4009 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 4010 mTouchNavigation.cancel(event); 4011 } 4012 } 4013 } 4014 super.onDeliverToNext(q); 4015 } 4016 } 4017 4018 /** 4019 * Creates dpad events from unhandled trackball movements. 4020 */ 4021 final class SyntheticTrackballHandler { 4022 private final TrackballAxis mX = new TrackballAxis(); 4023 private final TrackballAxis mY = new TrackballAxis(); 4024 private long mLastTime; 4025 4026 public void process(MotionEvent event) { 4027 // Translate the trackball event into DPAD keys and try to deliver those. 4028 long curTime = SystemClock.uptimeMillis(); 4029 if ((mLastTime + MAX_TRACKBALL_DELAY) < curTime) { 4030 // It has been too long since the last movement, 4031 // so restart at the beginning. 4032 mX.reset(0); 4033 mY.reset(0); 4034 mLastTime = curTime; 4035 } 4036 4037 final int action = event.getAction(); 4038 final int metaState = event.getMetaState(); 4039 switch (action) { 4040 case MotionEvent.ACTION_DOWN: 4041 mX.reset(2); 4042 mY.reset(2); 4043 enqueueInputEvent(new KeyEvent(curTime, curTime, 4044 KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 4045 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4046 InputDevice.SOURCE_KEYBOARD)); 4047 break; 4048 case MotionEvent.ACTION_UP: 4049 mX.reset(2); 4050 mY.reset(2); 4051 enqueueInputEvent(new KeyEvent(curTime, curTime, 4052 KeyEvent.ACTION_UP, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 4053 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4054 InputDevice.SOURCE_KEYBOARD)); 4055 break; 4056 } 4057 4058 if (DEBUG_TRACKBALL) Log.v(TAG, "TB X=" + mX.position + " step=" 4059 + mX.step + " dir=" + mX.dir + " acc=" + mX.acceleration 4060 + " move=" + event.getX() 4061 + " / Y=" + mY.position + " step=" 4062 + mY.step + " dir=" + mY.dir + " acc=" + mY.acceleration 4063 + " move=" + event.getY()); 4064 final float xOff = mX.collect(event.getX(), event.getEventTime(), "X"); 4065 final float yOff = mY.collect(event.getY(), event.getEventTime(), "Y"); 4066 4067 // Generate DPAD events based on the trackball movement. 4068 // We pick the axis that has moved the most as the direction of 4069 // the DPAD. When we generate DPAD events for one axis, then the 4070 // other axis is reset -- we don't want to perform DPAD jumps due 4071 // to slight movements in the trackball when making major movements 4072 // along the other axis. 4073 int keycode = 0; 4074 int movement = 0; 4075 float accel = 1; 4076 if (xOff > yOff) { 4077 movement = mX.generate(); 4078 if (movement != 0) { 4079 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_RIGHT 4080 : KeyEvent.KEYCODE_DPAD_LEFT; 4081 accel = mX.acceleration; 4082 mY.reset(2); 4083 } 4084 } else if (yOff > 0) { 4085 movement = mY.generate(); 4086 if (movement != 0) { 4087 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_DOWN 4088 : KeyEvent.KEYCODE_DPAD_UP; 4089 accel = mY.acceleration; 4090 mX.reset(2); 4091 } 4092 } 4093 4094 if (keycode != 0) { 4095 if (movement < 0) movement = -movement; 4096 int accelMovement = (int)(movement * accel); 4097 if (DEBUG_TRACKBALL) Log.v(TAG, "Move: movement=" + movement 4098 + " accelMovement=" + accelMovement 4099 + " accel=" + accel); 4100 if (accelMovement > movement) { 4101 if (DEBUG_TRACKBALL) Log.v(TAG, "Delivering fake DPAD: " 4102 + keycode); 4103 movement--; 4104 int repeatCount = accelMovement - movement; 4105 enqueueInputEvent(new KeyEvent(curTime, curTime, 4106 KeyEvent.ACTION_MULTIPLE, keycode, repeatCount, metaState, 4107 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4108 InputDevice.SOURCE_KEYBOARD)); 4109 } 4110 while (movement > 0) { 4111 if (DEBUG_TRACKBALL) Log.v(TAG, "Delivering fake DPAD: " 4112 + keycode); 4113 movement--; 4114 curTime = SystemClock.uptimeMillis(); 4115 enqueueInputEvent(new KeyEvent(curTime, curTime, 4116 KeyEvent.ACTION_DOWN, keycode, 0, metaState, 4117 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4118 InputDevice.SOURCE_KEYBOARD)); 4119 enqueueInputEvent(new KeyEvent(curTime, curTime, 4120 KeyEvent.ACTION_UP, keycode, 0, metaState, 4121 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4122 InputDevice.SOURCE_KEYBOARD)); 4123 } 4124 mLastTime = curTime; 4125 } 4126 } 4127 4128 public void cancel(MotionEvent event) { 4129 mLastTime = Integer.MIN_VALUE; 4130 4131 // If we reach this, we consumed a trackball event. 4132 // Because we will not translate the trackball event into a key event, 4133 // touch mode will not exit, so we exit touch mode here. 4134 if (mView != null && mAdded) { 4135 ensureTouchMode(false); 4136 } 4137 } 4138 } 4139 4140 /** 4141 * Maintains state information for a single trackball axis, generating 4142 * discrete (DPAD) movements based on raw trackball motion. 4143 */ 4144 static final class TrackballAxis { 4145 /** 4146 * The maximum amount of acceleration we will apply. 4147 */ 4148 static final float MAX_ACCELERATION = 20; 4149 4150 /** 4151 * The maximum amount of time (in milliseconds) between events in order 4152 * for us to consider the user to be doing fast trackball movements, 4153 * and thus apply an acceleration. 4154 */ 4155 static final long FAST_MOVE_TIME = 150; 4156 4157 /** 4158 * Scaling factor to the time (in milliseconds) between events to how 4159 * much to multiple/divide the current acceleration. When movement 4160 * is < FAST_MOVE_TIME this multiplies the acceleration; when > 4161 * FAST_MOVE_TIME it divides it. 4162 */ 4163 static final float ACCEL_MOVE_SCALING_FACTOR = (1.0f/40); 4164 4165 static final float FIRST_MOVEMENT_THRESHOLD = 0.5f; 4166 static final float SECOND_CUMULATIVE_MOVEMENT_THRESHOLD = 2.0f; 4167 static final float SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD = 1.0f; 4168 4169 float position; 4170 float acceleration = 1; 4171 long lastMoveTime = 0; 4172 int step; 4173 int dir; 4174 int nonAccelMovement; 4175 4176 void reset(int _step) { 4177 position = 0; 4178 acceleration = 1; 4179 lastMoveTime = 0; 4180 step = _step; 4181 dir = 0; 4182 } 4183 4184 /** 4185 * Add trackball movement into the state. If the direction of movement 4186 * has been reversed, the state is reset before adding the 4187 * movement (so that you don't have to compensate for any previously 4188 * collected movement before see the result of the movement in the 4189 * new direction). 4190 * 4191 * @return Returns the absolute value of the amount of movement 4192 * collected so far. 4193 */ 4194 float collect(float off, long time, String axis) { 4195 long normTime; 4196 if (off > 0) { 4197 normTime = (long)(off * FAST_MOVE_TIME); 4198 if (dir < 0) { 4199 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to positive!"); 4200 position = 0; 4201 step = 0; 4202 acceleration = 1; 4203 lastMoveTime = 0; 4204 } 4205 dir = 1; 4206 } else if (off < 0) { 4207 normTime = (long)((-off) * FAST_MOVE_TIME); 4208 if (dir > 0) { 4209 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to negative!"); 4210 position = 0; 4211 step = 0; 4212 acceleration = 1; 4213 lastMoveTime = 0; 4214 } 4215 dir = -1; 4216 } else { 4217 normTime = 0; 4218 } 4219 4220 // The number of milliseconds between each movement that is 4221 // considered "normal" and will not result in any acceleration 4222 // or deceleration, scaled by the offset we have here. 4223 if (normTime > 0) { 4224 long delta = time - lastMoveTime; 4225 lastMoveTime = time; 4226 float acc = acceleration; 4227 if (delta < normTime) { 4228 // The user is scrolling rapidly, so increase acceleration. 4229 float scale = (normTime-delta) * ACCEL_MOVE_SCALING_FACTOR; 4230 if (scale > 1) acc *= scale; 4231 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " accelerate: off=" 4232 + off + " normTime=" + normTime + " delta=" + delta 4233 + " scale=" + scale + " acc=" + acc); 4234 acceleration = acc < MAX_ACCELERATION ? acc : MAX_ACCELERATION; 4235 } else { 4236 // The user is scrolling slowly, so decrease acceleration. 4237 float scale = (delta-normTime) * ACCEL_MOVE_SCALING_FACTOR; 4238 if (scale > 1) acc /= scale; 4239 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " deccelerate: off=" 4240 + off + " normTime=" + normTime + " delta=" + delta 4241 + " scale=" + scale + " acc=" + acc); 4242 acceleration = acc > 1 ? acc : 1; 4243 } 4244 } 4245 position += off; 4246 return Math.abs(position); 4247 } 4248 4249 /** 4250 * Generate the number of discrete movement events appropriate for 4251 * the currently collected trackball movement. 4252 * 4253 * @return Returns the number of discrete movements, either positive 4254 * or negative, or 0 if there is not enough trackball movement yet 4255 * for a discrete movement. 4256 */ 4257 int generate() { 4258 int movement = 0; 4259 nonAccelMovement = 0; 4260 do { 4261 final int dir = position >= 0 ? 1 : -1; 4262 switch (step) { 4263 // If we are going to execute the first step, then we want 4264 // to do this as soon as possible instead of waiting for 4265 // a full movement, in order to make things look responsive. 4266 case 0: 4267 if (Math.abs(position) < FIRST_MOVEMENT_THRESHOLD) { 4268 return movement; 4269 } 4270 movement += dir; 4271 nonAccelMovement += dir; 4272 step = 1; 4273 break; 4274 // If we have generated the first movement, then we need 4275 // to wait for the second complete trackball motion before 4276 // generating the second discrete movement. 4277 case 1: 4278 if (Math.abs(position) < SECOND_CUMULATIVE_MOVEMENT_THRESHOLD) { 4279 return movement; 4280 } 4281 movement += dir; 4282 nonAccelMovement += dir; 4283 position -= SECOND_CUMULATIVE_MOVEMENT_THRESHOLD * dir; 4284 step = 2; 4285 break; 4286 // After the first two, we generate discrete movements 4287 // consistently with the trackball, applying an acceleration 4288 // if the trackball is moving quickly. This is a simple 4289 // acceleration on top of what we already compute based 4290 // on how quickly the wheel is being turned, to apply 4291 // a longer increasing acceleration to continuous movement 4292 // in one direction. 4293 default: 4294 if (Math.abs(position) < SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD) { 4295 return movement; 4296 } 4297 movement += dir; 4298 position -= dir * SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD; 4299 float acc = acceleration; 4300 acc *= 1.1f; 4301 acceleration = acc < MAX_ACCELERATION ? acc : acceleration; 4302 break; 4303 } 4304 } while (true); 4305 } 4306 } 4307 4308 /** 4309 * Creates dpad events from unhandled joystick movements. 4310 */ 4311 final class SyntheticJoystickHandler extends Handler { 4312 private final static String TAG = "SyntheticJoystickHandler"; 4313 private final static int MSG_ENQUEUE_X_AXIS_KEY_REPEAT = 1; 4314 private final static int MSG_ENQUEUE_Y_AXIS_KEY_REPEAT = 2; 4315 4316 private int mLastXDirection; 4317 private int mLastYDirection; 4318 private int mLastXKeyCode; 4319 private int mLastYKeyCode; 4320 4321 public SyntheticJoystickHandler() { 4322 super(true); 4323 } 4324 4325 @Override 4326 public void handleMessage(Message msg) { 4327 switch (msg.what) { 4328 case MSG_ENQUEUE_X_AXIS_KEY_REPEAT: 4329 case MSG_ENQUEUE_Y_AXIS_KEY_REPEAT: { 4330 KeyEvent oldEvent = (KeyEvent)msg.obj; 4331 KeyEvent e = KeyEvent.changeTimeRepeat(oldEvent, 4332 SystemClock.uptimeMillis(), 4333 oldEvent.getRepeatCount() + 1); 4334 if (mAttachInfo.mHasWindowFocus) { 4335 enqueueInputEvent(e); 4336 Message m = obtainMessage(msg.what, e); 4337 m.setAsynchronous(true); 4338 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatDelay()); 4339 } 4340 } break; 4341 } 4342 } 4343 4344 public void process(MotionEvent event) { 4345 switch(event.getActionMasked()) { 4346 case MotionEvent.ACTION_CANCEL: 4347 cancel(event); 4348 break; 4349 case MotionEvent.ACTION_MOVE: 4350 update(event, true); 4351 break; 4352 default: 4353 Log.w(TAG, "Unexpected action: " + event.getActionMasked()); 4354 } 4355 } 4356 4357 private void cancel(MotionEvent event) { 4358 removeMessages(MSG_ENQUEUE_X_AXIS_KEY_REPEAT); 4359 removeMessages(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT); 4360 update(event, false); 4361 } 4362 4363 private void update(MotionEvent event, boolean synthesizeNewKeys) { 4364 final long time = event.getEventTime(); 4365 final int metaState = event.getMetaState(); 4366 final int deviceId = event.getDeviceId(); 4367 final int source = event.getSource(); 4368 4369 int xDirection = joystickAxisValueToDirection( 4370 event.getAxisValue(MotionEvent.AXIS_HAT_X)); 4371 if (xDirection == 0) { 4372 xDirection = joystickAxisValueToDirection(event.getX()); 4373 } 4374 4375 int yDirection = joystickAxisValueToDirection( 4376 event.getAxisValue(MotionEvent.AXIS_HAT_Y)); 4377 if (yDirection == 0) { 4378 yDirection = joystickAxisValueToDirection(event.getY()); 4379 } 4380 4381 if (xDirection != mLastXDirection) { 4382 if (mLastXKeyCode != 0) { 4383 removeMessages(MSG_ENQUEUE_X_AXIS_KEY_REPEAT); 4384 enqueueInputEvent(new KeyEvent(time, time, 4385 KeyEvent.ACTION_UP, mLastXKeyCode, 0, metaState, 4386 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4387 mLastXKeyCode = 0; 4388 } 4389 4390 mLastXDirection = xDirection; 4391 4392 if (xDirection != 0 && synthesizeNewKeys) { 4393 mLastXKeyCode = xDirection > 0 4394 ? KeyEvent.KEYCODE_DPAD_RIGHT : KeyEvent.KEYCODE_DPAD_LEFT; 4395 final KeyEvent e = new KeyEvent(time, time, 4396 KeyEvent.ACTION_DOWN, mLastXKeyCode, 0, metaState, 4397 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4398 enqueueInputEvent(e); 4399 Message m = obtainMessage(MSG_ENQUEUE_X_AXIS_KEY_REPEAT, e); 4400 m.setAsynchronous(true); 4401 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4402 } 4403 } 4404 4405 if (yDirection != mLastYDirection) { 4406 if (mLastYKeyCode != 0) { 4407 removeMessages(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT); 4408 enqueueInputEvent(new KeyEvent(time, time, 4409 KeyEvent.ACTION_UP, mLastYKeyCode, 0, metaState, 4410 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4411 mLastYKeyCode = 0; 4412 } 4413 4414 mLastYDirection = yDirection; 4415 4416 if (yDirection != 0 && synthesizeNewKeys) { 4417 mLastYKeyCode = yDirection > 0 4418 ? KeyEvent.KEYCODE_DPAD_DOWN : KeyEvent.KEYCODE_DPAD_UP; 4419 final KeyEvent e = new KeyEvent(time, time, 4420 KeyEvent.ACTION_DOWN, mLastYKeyCode, 0, metaState, 4421 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4422 enqueueInputEvent(e); 4423 Message m = obtainMessage(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT, e); 4424 m.setAsynchronous(true); 4425 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4426 } 4427 } 4428 } 4429 4430 private int joystickAxisValueToDirection(float value) { 4431 if (value >= 0.5f) { 4432 return 1; 4433 } else if (value <= -0.5f) { 4434 return -1; 4435 } else { 4436 return 0; 4437 } 4438 } 4439 } 4440 4441 /** 4442 * Creates dpad events from unhandled touch navigation movements. 4443 */ 4444 final class SyntheticTouchNavigationHandler extends Handler { 4445 private static final String LOCAL_TAG = "SyntheticTouchNavigationHandler"; 4446 private static final boolean LOCAL_DEBUG = false; 4447 4448 // Assumed nominal width and height in millimeters of a touch navigation pad, 4449 // if no resolution information is available from the input system. 4450 private static final float DEFAULT_WIDTH_MILLIMETERS = 48; 4451 private static final float DEFAULT_HEIGHT_MILLIMETERS = 48; 4452 4453 /* TODO: These constants should eventually be moved to ViewConfiguration. */ 4454 4455 // The nominal distance traveled to move by one unit. 4456 private static final int TICK_DISTANCE_MILLIMETERS = 12; 4457 4458 // Minimum and maximum fling velocity in ticks per second. 4459 // The minimum velocity should be set such that we perform enough ticks per 4460 // second that the fling appears to be fluid. For example, if we set the minimum 4461 // to 2 ticks per second, then there may be up to half a second delay between the next 4462 // to last and last ticks which is noticeably discrete and jerky. This value should 4463 // probably not be set to anything less than about 4. 4464 // If fling accuracy is a problem then consider tuning the tick distance instead. 4465 private static final float MIN_FLING_VELOCITY_TICKS_PER_SECOND = 6f; 4466 private static final float MAX_FLING_VELOCITY_TICKS_PER_SECOND = 20f; 4467 4468 // Fling velocity decay factor applied after each new key is emitted. 4469 // This parameter controls the deceleration and overall duration of the fling. 4470 // The fling stops automatically when its velocity drops below the minimum 4471 // fling velocity defined above. 4472 private static final float FLING_TICK_DECAY = 0.8f; 4473 4474 /* The input device that we are tracking. */ 4475 4476 private int mCurrentDeviceId = -1; 4477 private int mCurrentSource; 4478 private boolean mCurrentDeviceSupported; 4479 4480 /* Configuration for the current input device. */ 4481 4482 // The scaled tick distance. A movement of this amount should generally translate 4483 // into a single dpad event in a given direction. 4484 private float mConfigTickDistance; 4485 4486 // The minimum and maximum scaled fling velocity. 4487 private float mConfigMinFlingVelocity; 4488 private float mConfigMaxFlingVelocity; 4489 4490 /* Tracking state. */ 4491 4492 // The velocity tracker for detecting flings. 4493 private VelocityTracker mVelocityTracker; 4494 4495 // The active pointer id, or -1 if none. 4496 private int mActivePointerId = -1; 4497 4498 // Location where tracking started. 4499 private float mStartX; 4500 private float mStartY; 4501 4502 // Most recently observed position. 4503 private float mLastX; 4504 private float mLastY; 4505 4506 // Accumulated movement delta since the last direction key was sent. 4507 private float mAccumulatedX; 4508 private float mAccumulatedY; 4509 4510 // Set to true if any movement was delivered to the app. 4511 // Implies that tap slop was exceeded. 4512 private boolean mConsumedMovement; 4513 4514 // The most recently sent key down event. 4515 // The keycode remains set until the direction changes or a fling ends 4516 // so that repeated key events may be generated as required. 4517 private long mPendingKeyDownTime; 4518 private int mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 4519 private int mPendingKeyRepeatCount; 4520 private int mPendingKeyMetaState; 4521 4522 // The current fling velocity while a fling is in progress. 4523 private boolean mFlinging; 4524 private float mFlingVelocity; 4525 4526 public SyntheticTouchNavigationHandler() { 4527 super(true); 4528 } 4529 4530 public void process(MotionEvent event) { 4531 // Update the current device information. 4532 final long time = event.getEventTime(); 4533 final int deviceId = event.getDeviceId(); 4534 final int source = event.getSource(); 4535 if (mCurrentDeviceId != deviceId || mCurrentSource != source) { 4536 finishKeys(time); 4537 finishTracking(time); 4538 mCurrentDeviceId = deviceId; 4539 mCurrentSource = source; 4540 mCurrentDeviceSupported = false; 4541 InputDevice device = event.getDevice(); 4542 if (device != null) { 4543 // In order to support an input device, we must know certain 4544 // characteristics about it, such as its size and resolution. 4545 InputDevice.MotionRange xRange = device.getMotionRange(MotionEvent.AXIS_X); 4546 InputDevice.MotionRange yRange = device.getMotionRange(MotionEvent.AXIS_Y); 4547 if (xRange != null && yRange != null) { 4548 mCurrentDeviceSupported = true; 4549 4550 // Infer the resolution if it not actually known. 4551 float xRes = xRange.getResolution(); 4552 if (xRes <= 0) { 4553 xRes = xRange.getRange() / DEFAULT_WIDTH_MILLIMETERS; 4554 } 4555 float yRes = yRange.getResolution(); 4556 if (yRes <= 0) { 4557 yRes = yRange.getRange() / DEFAULT_HEIGHT_MILLIMETERS; 4558 } 4559 float nominalRes = (xRes + yRes) * 0.5f; 4560 4561 // Precompute all of the configuration thresholds we will need. 4562 mConfigTickDistance = TICK_DISTANCE_MILLIMETERS * nominalRes; 4563 mConfigMinFlingVelocity = 4564 MIN_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 4565 mConfigMaxFlingVelocity = 4566 MAX_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 4567 4568 if (LOCAL_DEBUG) { 4569 Log.d(LOCAL_TAG, "Configured device " + mCurrentDeviceId 4570 + " (" + Integer.toHexString(mCurrentSource) + "): " 4571 + ", mConfigTickDistance=" + mConfigTickDistance 4572 + ", mConfigMinFlingVelocity=" + mConfigMinFlingVelocity 4573 + ", mConfigMaxFlingVelocity=" + mConfigMaxFlingVelocity); 4574 } 4575 } 4576 } 4577 } 4578 if (!mCurrentDeviceSupported) { 4579 return; 4580 } 4581 4582 // Handle the event. 4583 final int action = event.getActionMasked(); 4584 switch (action) { 4585 case MotionEvent.ACTION_DOWN: { 4586 boolean caughtFling = mFlinging; 4587 finishKeys(time); 4588 finishTracking(time); 4589 mActivePointerId = event.getPointerId(0); 4590 mVelocityTracker = VelocityTracker.obtain(); 4591 mVelocityTracker.addMovement(event); 4592 mStartX = event.getX(); 4593 mStartY = event.getY(); 4594 mLastX = mStartX; 4595 mLastY = mStartY; 4596 mAccumulatedX = 0; 4597 mAccumulatedY = 0; 4598 4599 // If we caught a fling, then pretend that the tap slop has already 4600 // been exceeded to suppress taps whose only purpose is to stop the fling. 4601 mConsumedMovement = caughtFling; 4602 break; 4603 } 4604 4605 case MotionEvent.ACTION_MOVE: 4606 case MotionEvent.ACTION_UP: { 4607 if (mActivePointerId < 0) { 4608 break; 4609 } 4610 final int index = event.findPointerIndex(mActivePointerId); 4611 if (index < 0) { 4612 finishKeys(time); 4613 finishTracking(time); 4614 break; 4615 } 4616 4617 mVelocityTracker.addMovement(event); 4618 final float x = event.getX(index); 4619 final float y = event.getY(index); 4620 mAccumulatedX += x - mLastX; 4621 mAccumulatedY += y - mLastY; 4622 mLastX = x; 4623 mLastY = y; 4624 4625 // Consume any accumulated movement so far. 4626 final int metaState = event.getMetaState(); 4627 consumeAccumulatedMovement(time, metaState); 4628 4629 // Detect taps and flings. 4630 if (action == MotionEvent.ACTION_UP) { 4631 if (mConsumedMovement && mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 4632 // It might be a fling. 4633 mVelocityTracker.computeCurrentVelocity(1000, mConfigMaxFlingVelocity); 4634 final float vx = mVelocityTracker.getXVelocity(mActivePointerId); 4635 final float vy = mVelocityTracker.getYVelocity(mActivePointerId); 4636 if (!startFling(time, vx, vy)) { 4637 finishKeys(time); 4638 } 4639 } 4640 finishTracking(time); 4641 } 4642 break; 4643 } 4644 4645 case MotionEvent.ACTION_CANCEL: { 4646 finishKeys(time); 4647 finishTracking(time); 4648 break; 4649 } 4650 } 4651 } 4652 4653 public void cancel(MotionEvent event) { 4654 if (mCurrentDeviceId == event.getDeviceId() 4655 && mCurrentSource == event.getSource()) { 4656 final long time = event.getEventTime(); 4657 finishKeys(time); 4658 finishTracking(time); 4659 } 4660 } 4661 4662 private void finishKeys(long time) { 4663 cancelFling(); 4664 sendKeyUp(time); 4665 } 4666 4667 private void finishTracking(long time) { 4668 if (mActivePointerId >= 0) { 4669 mActivePointerId = -1; 4670 mVelocityTracker.recycle(); 4671 mVelocityTracker = null; 4672 } 4673 } 4674 4675 private void consumeAccumulatedMovement(long time, int metaState) { 4676 final float absX = Math.abs(mAccumulatedX); 4677 final float absY = Math.abs(mAccumulatedY); 4678 if (absX >= absY) { 4679 if (absX >= mConfigTickDistance) { 4680 mAccumulatedX = consumeAccumulatedMovement(time, metaState, mAccumulatedX, 4681 KeyEvent.KEYCODE_DPAD_LEFT, KeyEvent.KEYCODE_DPAD_RIGHT); 4682 mAccumulatedY = 0; 4683 mConsumedMovement = true; 4684 } 4685 } else { 4686 if (absY >= mConfigTickDistance) { 4687 mAccumulatedY = consumeAccumulatedMovement(time, metaState, mAccumulatedY, 4688 KeyEvent.KEYCODE_DPAD_UP, KeyEvent.KEYCODE_DPAD_DOWN); 4689 mAccumulatedX = 0; 4690 mConsumedMovement = true; 4691 } 4692 } 4693 } 4694 4695 private float consumeAccumulatedMovement(long time, int metaState, 4696 float accumulator, int negativeKeyCode, int positiveKeyCode) { 4697 while (accumulator <= -mConfigTickDistance) { 4698 sendKeyDownOrRepeat(time, negativeKeyCode, metaState); 4699 accumulator += mConfigTickDistance; 4700 } 4701 while (accumulator >= mConfigTickDistance) { 4702 sendKeyDownOrRepeat(time, positiveKeyCode, metaState); 4703 accumulator -= mConfigTickDistance; 4704 } 4705 return accumulator; 4706 } 4707 4708 private void sendKeyDownOrRepeat(long time, int keyCode, int metaState) { 4709 if (mPendingKeyCode != keyCode) { 4710 sendKeyUp(time); 4711 mPendingKeyDownTime = time; 4712 mPendingKeyCode = keyCode; 4713 mPendingKeyRepeatCount = 0; 4714 } else { 4715 mPendingKeyRepeatCount += 1; 4716 } 4717 mPendingKeyMetaState = metaState; 4718 4719 // Note: Normally we would pass FLAG_LONG_PRESS when the repeat count is 1 4720 // but it doesn't quite make sense when simulating the events in this way. 4721 if (LOCAL_DEBUG) { 4722 Log.d(LOCAL_TAG, "Sending key down: keyCode=" + mPendingKeyCode 4723 + ", repeatCount=" + mPendingKeyRepeatCount 4724 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 4725 } 4726 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 4727 KeyEvent.ACTION_DOWN, mPendingKeyCode, mPendingKeyRepeatCount, 4728 mPendingKeyMetaState, mCurrentDeviceId, 4729 KeyEvent.FLAG_FALLBACK, mCurrentSource)); 4730 } 4731 4732 private void sendKeyUp(long time) { 4733 if (mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 4734 if (LOCAL_DEBUG) { 4735 Log.d(LOCAL_TAG, "Sending key up: keyCode=" + mPendingKeyCode 4736 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 4737 } 4738 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 4739 KeyEvent.ACTION_UP, mPendingKeyCode, 0, mPendingKeyMetaState, 4740 mCurrentDeviceId, 0, KeyEvent.FLAG_FALLBACK, 4741 mCurrentSource)); 4742 mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 4743 } 4744 } 4745 4746 private boolean startFling(long time, float vx, float vy) { 4747 if (LOCAL_DEBUG) { 4748 Log.d(LOCAL_TAG, "Considering fling: vx=" + vx + ", vy=" + vy 4749 + ", min=" + mConfigMinFlingVelocity); 4750 } 4751 4752 // Flings must be oriented in the same direction as the preceding movements. 4753 switch (mPendingKeyCode) { 4754 case KeyEvent.KEYCODE_DPAD_LEFT: 4755 if (-vx >= mConfigMinFlingVelocity 4756 && Math.abs(vy) < mConfigMinFlingVelocity) { 4757 mFlingVelocity = -vx; 4758 break; 4759 } 4760 return false; 4761 4762 case KeyEvent.KEYCODE_DPAD_RIGHT: 4763 if (vx >= mConfigMinFlingVelocity 4764 && Math.abs(vy) < mConfigMinFlingVelocity) { 4765 mFlingVelocity = vx; 4766 break; 4767 } 4768 return false; 4769 4770 case KeyEvent.KEYCODE_DPAD_UP: 4771 if (-vy >= mConfigMinFlingVelocity 4772 && Math.abs(vx) < mConfigMinFlingVelocity) { 4773 mFlingVelocity = -vy; 4774 break; 4775 } 4776 return false; 4777 4778 case KeyEvent.KEYCODE_DPAD_DOWN: 4779 if (vy >= mConfigMinFlingVelocity 4780 && Math.abs(vx) < mConfigMinFlingVelocity) { 4781 mFlingVelocity = vy; 4782 break; 4783 } 4784 return false; 4785 } 4786 4787 // Post the first fling event. 4788 mFlinging = postFling(time); 4789 return mFlinging; 4790 } 4791 4792 private boolean postFling(long time) { 4793 // The idea here is to estimate the time when the pointer would have 4794 // traveled one tick distance unit given the current fling velocity. 4795 // This effect creates continuity of motion. 4796 if (mFlingVelocity >= mConfigMinFlingVelocity) { 4797 long delay = (long)(mConfigTickDistance / mFlingVelocity * 1000); 4798 postAtTime(mFlingRunnable, time + delay); 4799 if (LOCAL_DEBUG) { 4800 Log.d(LOCAL_TAG, "Posted fling: velocity=" 4801 + mFlingVelocity + ", delay=" + delay 4802 + ", keyCode=" + mPendingKeyCode); 4803 } 4804 return true; 4805 } 4806 return false; 4807 } 4808 4809 private void cancelFling() { 4810 if (mFlinging) { 4811 removeCallbacks(mFlingRunnable); 4812 mFlinging = false; 4813 } 4814 } 4815 4816 private final Runnable mFlingRunnable = new Runnable() { 4817 @Override 4818 public void run() { 4819 final long time = SystemClock.uptimeMillis(); 4820 sendKeyDownOrRepeat(time, mPendingKeyCode, mPendingKeyMetaState); 4821 mFlingVelocity *= FLING_TICK_DECAY; 4822 if (!postFling(time)) { 4823 mFlinging = false; 4824 finishKeys(time); 4825 } 4826 } 4827 }; 4828 } 4829 4830 /** 4831 * Returns true if the key is used for keyboard navigation. 4832 * @param keyEvent The key event. 4833 * @return True if the key is used for keyboard navigation. 4834 */ 4835 private static boolean isNavigationKey(KeyEvent keyEvent) { 4836 switch (keyEvent.getKeyCode()) { 4837 case KeyEvent.KEYCODE_DPAD_LEFT: 4838 case KeyEvent.KEYCODE_DPAD_RIGHT: 4839 case KeyEvent.KEYCODE_DPAD_UP: 4840 case KeyEvent.KEYCODE_DPAD_DOWN: 4841 case KeyEvent.KEYCODE_DPAD_CENTER: 4842 case KeyEvent.KEYCODE_PAGE_UP: 4843 case KeyEvent.KEYCODE_PAGE_DOWN: 4844 case KeyEvent.KEYCODE_MOVE_HOME: 4845 case KeyEvent.KEYCODE_MOVE_END: 4846 case KeyEvent.KEYCODE_TAB: 4847 case KeyEvent.KEYCODE_SPACE: 4848 case KeyEvent.KEYCODE_ENTER: 4849 return true; 4850 } 4851 return false; 4852 } 4853 4854 /** 4855 * Returns true if the key is used for typing. 4856 * @param keyEvent The key event. 4857 * @return True if the key is used for typing. 4858 */ 4859 private static boolean isTypingKey(KeyEvent keyEvent) { 4860 return keyEvent.getUnicodeChar() > 0; 4861 } 4862 4863 /** 4864 * See if the key event means we should leave touch mode (and leave touch mode if so). 4865 * @param event The key event. 4866 * @return Whether this key event should be consumed (meaning the act of 4867 * leaving touch mode alone is considered the event). 4868 */ 4869 private boolean checkForLeavingTouchModeAndConsume(KeyEvent event) { 4870 // Only relevant in touch mode. 4871 if (!mAttachInfo.mInTouchMode) { 4872 return false; 4873 } 4874 4875 // Only consider leaving touch mode on DOWN or MULTIPLE actions, never on UP. 4876 final int action = event.getAction(); 4877 if (action != KeyEvent.ACTION_DOWN && action != KeyEvent.ACTION_MULTIPLE) { 4878 return false; 4879 } 4880 4881 // Don't leave touch mode if the IME told us not to. 4882 if ((event.getFlags() & KeyEvent.FLAG_KEEP_TOUCH_MODE) != 0) { 4883 return false; 4884 } 4885 4886 // If the key can be used for keyboard navigation then leave touch mode 4887 // and select a focused view if needed (in ensureTouchMode). 4888 // When a new focused view is selected, we consume the navigation key because 4889 // navigation doesn't make much sense unless a view already has focus so 4890 // the key's purpose is to set focus. 4891 if (isNavigationKey(event)) { 4892 return ensureTouchMode(false); 4893 } 4894 4895 // If the key can be used for typing then leave touch mode 4896 // and select a focused view if needed (in ensureTouchMode). 4897 // Always allow the view to process the typing key. 4898 if (isTypingKey(event)) { 4899 ensureTouchMode(false); 4900 return false; 4901 } 4902 4903 return false; 4904 } 4905 4906 /* drag/drop */ 4907 void setLocalDragState(Object obj) { 4908 mLocalDragState = obj; 4909 } 4910 4911 private void handleDragEvent(DragEvent event) { 4912 // From the root, only drag start/end/location are dispatched. entered/exited 4913 // are determined and dispatched by the viewgroup hierarchy, who then report 4914 // that back here for ultimate reporting back to the framework. 4915 if (mView != null && mAdded) { 4916 final int what = event.mAction; 4917 4918 if (what == DragEvent.ACTION_DRAG_EXITED) { 4919 // A direct EXITED event means that the window manager knows we've just crossed 4920 // a window boundary, so the current drag target within this one must have 4921 // just been exited. Send it the usual notifications and then we're done 4922 // for now. 4923 mView.dispatchDragEvent(event); 4924 } else { 4925 // Cache the drag description when the operation starts, then fill it in 4926 // on subsequent calls as a convenience 4927 if (what == DragEvent.ACTION_DRAG_STARTED) { 4928 mCurrentDragView = null; // Start the current-recipient tracking 4929 mDragDescription = event.mClipDescription; 4930 } else { 4931 event.mClipDescription = mDragDescription; 4932 } 4933 4934 // For events with a [screen] location, translate into window coordinates 4935 if ((what == DragEvent.ACTION_DRAG_LOCATION) || (what == DragEvent.ACTION_DROP)) { 4936 mDragPoint.set(event.mX, event.mY); 4937 if (mTranslator != null) { 4938 mTranslator.translatePointInScreenToAppWindow(mDragPoint); 4939 } 4940 4941 if (mCurScrollY != 0) { 4942 mDragPoint.offset(0, mCurScrollY); 4943 } 4944 4945 event.mX = mDragPoint.x; 4946 event.mY = mDragPoint.y; 4947 } 4948 4949 // Remember who the current drag target is pre-dispatch 4950 final View prevDragView = mCurrentDragView; 4951 4952 // Now dispatch the drag/drop event 4953 boolean result = mView.dispatchDragEvent(event); 4954 4955 // If we changed apparent drag target, tell the OS about it 4956 if (prevDragView != mCurrentDragView) { 4957 try { 4958 if (prevDragView != null) { 4959 mWindowSession.dragRecipientExited(mWindow); 4960 } 4961 if (mCurrentDragView != null) { 4962 mWindowSession.dragRecipientEntered(mWindow); 4963 } 4964 } catch (RemoteException e) { 4965 Slog.e(TAG, "Unable to note drag target change"); 4966 } 4967 } 4968 4969 // Report the drop result when we're done 4970 if (what == DragEvent.ACTION_DROP) { 4971 mDragDescription = null; 4972 try { 4973 Log.i(TAG, "Reporting drop result: " + result); 4974 mWindowSession.reportDropResult(mWindow, result); 4975 } catch (RemoteException e) { 4976 Log.e(TAG, "Unable to report drop result"); 4977 } 4978 } 4979 4980 // When the drag operation ends, release any local state object 4981 // that may have been in use 4982 if (what == DragEvent.ACTION_DRAG_ENDED) { 4983 setLocalDragState(null); 4984 } 4985 } 4986 } 4987 event.recycle(); 4988 } 4989 4990 public void handleDispatchSystemUiVisibilityChanged(SystemUiVisibilityInfo args) { 4991 if (mSeq != args.seq) { 4992 // The sequence has changed, so we need to update our value and make 4993 // sure to do a traversal afterward so the window manager is given our 4994 // most recent data. 4995 mSeq = args.seq; 4996 mAttachInfo.mForceReportNewAttributes = true; 4997 scheduleTraversals(); 4998 } 4999 if (mView == null) return; 5000 if (args.localChanges != 0) { 5001 mView.updateLocalSystemUiVisibility(args.localValue, args.localChanges); 5002 } 5003 if (mAttachInfo != null) { 5004 int visibility = args.globalVisibility&View.SYSTEM_UI_CLEARABLE_FLAGS; 5005 if (visibility != mAttachInfo.mGlobalSystemUiVisibility) { 5006 mAttachInfo.mGlobalSystemUiVisibility = visibility; 5007 mView.dispatchSystemUiVisibilityChanged(visibility); 5008 } 5009 } 5010 } 5011 5012 public void handleDispatchDoneAnimating() { 5013 if (mWindowsAnimating) { 5014 mWindowsAnimating = false; 5015 if (!mDirty.isEmpty() || mIsAnimating || mFullRedrawNeeded) { 5016 scheduleTraversals(); 5017 } 5018 } 5019 } 5020 5021 public void getLastTouchPoint(Point outLocation) { 5022 outLocation.x = (int) mLastTouchPoint.x; 5023 outLocation.y = (int) mLastTouchPoint.y; 5024 } 5025 5026 public void setDragFocus(View newDragTarget) { 5027 if (mCurrentDragView != newDragTarget) { 5028 mCurrentDragView = newDragTarget; 5029 } 5030 } 5031 5032 private AudioManager getAudioManager() { 5033 if (mView == null) { 5034 throw new IllegalStateException("getAudioManager called when there is no mView"); 5035 } 5036 if (mAudioManager == null) { 5037 mAudioManager = (AudioManager) mView.getContext().getSystemService(Context.AUDIO_SERVICE); 5038 } 5039 return mAudioManager; 5040 } 5041 5042 public AccessibilityInteractionController getAccessibilityInteractionController() { 5043 if (mView == null) { 5044 throw new IllegalStateException("getAccessibilityInteractionController" 5045 + " called when there is no mView"); 5046 } 5047 if (mAccessibilityInteractionController == null) { 5048 mAccessibilityInteractionController = new AccessibilityInteractionController(this); 5049 } 5050 return mAccessibilityInteractionController; 5051 } 5052 5053 private int relayoutWindow(WindowManager.LayoutParams params, int viewVisibility, 5054 boolean insetsPending) throws RemoteException { 5055 5056 float appScale = mAttachInfo.mApplicationScale; 5057 boolean restore = false; 5058 if (params != null && mTranslator != null) { 5059 restore = true; 5060 params.backup(); 5061 mTranslator.translateWindowLayout(params); 5062 } 5063 if (params != null) { 5064 if (DBG) Log.d(TAG, "WindowLayout in layoutWindow:" + params); 5065 } 5066 mPendingConfiguration.seq = 0; 5067 //Log.d(TAG, ">>>>>> CALLING relayout"); 5068 if (params != null && mOrigWindowType != params.type) { 5069 // For compatibility with old apps, don't crash here. 5070 if (mTargetSdkVersion < android.os.Build.VERSION_CODES.ICE_CREAM_SANDWICH) { 5071 Slog.w(TAG, "Window type can not be changed after " 5072 + "the window is added; ignoring change of " + mView); 5073 params.type = mOrigWindowType; 5074 } 5075 } 5076 int relayoutResult = mWindowSession.relayout( 5077 mWindow, mSeq, params, 5078 (int) (mView.getMeasuredWidth() * appScale + 0.5f), 5079 (int) (mView.getMeasuredHeight() * appScale + 0.5f), 5080 viewVisibility, insetsPending ? WindowManagerGlobal.RELAYOUT_INSETS_PENDING : 0, 5081 mWinFrame, mPendingOverscanInsets, mPendingContentInsets, mPendingVisibleInsets, 5082 mPendingConfiguration, mSurface); 5083 //Log.d(TAG, "<<<<<< BACK FROM relayout"); 5084 if (restore) { 5085 params.restore(); 5086 } 5087 5088 if (mTranslator != null) { 5089 mTranslator.translateRectInScreenToAppWinFrame(mWinFrame); 5090 mTranslator.translateRectInScreenToAppWindow(mPendingOverscanInsets); 5091 mTranslator.translateRectInScreenToAppWindow(mPendingContentInsets); 5092 mTranslator.translateRectInScreenToAppWindow(mPendingVisibleInsets); 5093 } 5094 return relayoutResult; 5095 } 5096 5097 /** 5098 * {@inheritDoc} 5099 */ 5100 @Override 5101 public void playSoundEffect(int effectId) { 5102 checkThread(); 5103 5104 if (mMediaDisabled) { 5105 return; 5106 } 5107 5108 try { 5109 final AudioManager audioManager = getAudioManager(); 5110 5111 switch (effectId) { 5112 case SoundEffectConstants.CLICK: 5113 audioManager.playSoundEffect(AudioManager.FX_KEY_CLICK); 5114 return; 5115 case SoundEffectConstants.NAVIGATION_DOWN: 5116 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_DOWN); 5117 return; 5118 case SoundEffectConstants.NAVIGATION_LEFT: 5119 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_LEFT); 5120 return; 5121 case SoundEffectConstants.NAVIGATION_RIGHT: 5122 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_RIGHT); 5123 return; 5124 case SoundEffectConstants.NAVIGATION_UP: 5125 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_UP); 5126 return; 5127 default: 5128 throw new IllegalArgumentException("unknown effect id " + effectId + 5129 " not defined in " + SoundEffectConstants.class.getCanonicalName()); 5130 } 5131 } catch (IllegalStateException e) { 5132 // Exception thrown by getAudioManager() when mView is null 5133 Log.e(TAG, "FATAL EXCEPTION when attempting to play sound effect: " + e); 5134 e.printStackTrace(); 5135 } 5136 } 5137 5138 /** 5139 * {@inheritDoc} 5140 */ 5141 @Override 5142 public boolean performHapticFeedback(int effectId, boolean always) { 5143 try { 5144 return mWindowSession.performHapticFeedback(mWindow, effectId, always); 5145 } catch (RemoteException e) { 5146 return false; 5147 } 5148 } 5149 5150 /** 5151 * {@inheritDoc} 5152 */ 5153 @Override 5154 public View focusSearch(View focused, int direction) { 5155 checkThread(); 5156 if (!(mView instanceof ViewGroup)) { 5157 return null; 5158 } 5159 return FocusFinder.getInstance().findNextFocus((ViewGroup) mView, focused, direction); 5160 } 5161 5162 public void debug() { 5163 mView.debug(); 5164 } 5165 5166 public void dump(String prefix, FileDescriptor fd, PrintWriter writer, String[] args) { 5167 String innerPrefix = prefix + " "; 5168 writer.print(prefix); writer.println("ViewRoot:"); 5169 writer.print(innerPrefix); writer.print("mAdded="); writer.print(mAdded); 5170 writer.print(" mRemoved="); writer.println(mRemoved); 5171 writer.print(innerPrefix); writer.print("mConsumeBatchedInputScheduled="); 5172 writer.println(mConsumeBatchedInputScheduled); 5173 writer.print(innerPrefix); writer.print("mPendingInputEventCount="); 5174 writer.println(mPendingInputEventCount); 5175 writer.print(innerPrefix); writer.print("mProcessInputEventsScheduled="); 5176 writer.println(mProcessInputEventsScheduled); 5177 writer.print(innerPrefix); writer.print("mTraversalScheduled="); 5178 writer.print(mTraversalScheduled); 5179 if (mTraversalScheduled) { 5180 writer.print(" (barrier="); writer.print(mTraversalBarrier); writer.println(")"); 5181 } else { 5182 writer.println(); 5183 } 5184 mFirstInputStage.dump(innerPrefix, writer); 5185 5186 mChoreographer.dump(prefix, writer); 5187 5188 writer.print(prefix); writer.println("View Hierarchy:"); 5189 dumpViewHierarchy(innerPrefix, writer, mView); 5190 } 5191 5192 private void dumpViewHierarchy(String prefix, PrintWriter writer, View view) { 5193 writer.print(prefix); 5194 if (view == null) { 5195 writer.println("null"); 5196 return; 5197 } 5198 writer.println(view.toString()); 5199 if (!(view instanceof ViewGroup)) { 5200 return; 5201 } 5202 ViewGroup grp = (ViewGroup)view; 5203 final int N = grp.getChildCount(); 5204 if (N <= 0) { 5205 return; 5206 } 5207 prefix = prefix + " "; 5208 for (int i=0; i<N; i++) { 5209 dumpViewHierarchy(prefix, writer, grp.getChildAt(i)); 5210 } 5211 } 5212 5213 public void dumpGfxInfo(int[] info) { 5214 info[0] = info[1] = 0; 5215 if (mView != null) { 5216 getGfxInfo(mView, info); 5217 } 5218 } 5219 5220 private static void getGfxInfo(View view, int[] info) { 5221 RenderNode renderNode = view.mRenderNode; 5222 info[0]++; 5223 if (renderNode != null) { 5224 info[1] += 0; /* TODO: Memory used by RenderNodes (properties + DisplayLists) */ 5225 } 5226 5227 if (view instanceof ViewGroup) { 5228 ViewGroup group = (ViewGroup) view; 5229 5230 int count = group.getChildCount(); 5231 for (int i = 0; i < count; i++) { 5232 getGfxInfo(group.getChildAt(i), info); 5233 } 5234 } 5235 } 5236 5237 /** 5238 * @param immediate True, do now if not in traversal. False, put on queue and do later. 5239 * @return True, request has been queued. False, request has been completed. 5240 */ 5241 boolean die(boolean immediate) { 5242 // Make sure we do execute immediately if we are in the middle of a traversal or the damage 5243 // done by dispatchDetachedFromWindow will cause havoc on return. 5244 if (immediate && !mIsInTraversal) { 5245 doDie(); 5246 return false; 5247 } 5248 5249 if (!mIsDrawing) { 5250 destroyHardwareRenderer(); 5251 } else { 5252 Log.e(TAG, "Attempting to destroy the window while drawing!\n" + 5253 " window=" + this + ", title=" + mWindowAttributes.getTitle()); 5254 } 5255 mHandler.sendEmptyMessage(MSG_DIE); 5256 return true; 5257 } 5258 5259 void doDie() { 5260 checkThread(); 5261 if (LOCAL_LOGV) Log.v(TAG, "DIE in " + this + " of " + mSurface); 5262 synchronized (this) { 5263 if (mRemoved) { 5264 return; 5265 } 5266 mRemoved = true; 5267 if (mAdded) { 5268 dispatchDetachedFromWindow(); 5269 } 5270 5271 if (mAdded && !mFirst) { 5272 destroyHardwareRenderer(); 5273 5274 if (mView != null) { 5275 int viewVisibility = mView.getVisibility(); 5276 boolean viewVisibilityChanged = mViewVisibility != viewVisibility; 5277 if (mWindowAttributesChanged || viewVisibilityChanged) { 5278 // If layout params have been changed, first give them 5279 // to the window manager to make sure it has the correct 5280 // animation info. 5281 try { 5282 if ((relayoutWindow(mWindowAttributes, viewVisibility, false) 5283 & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 5284 mWindowSession.finishDrawing(mWindow); 5285 } 5286 } catch (RemoteException e) { 5287 } 5288 } 5289 5290 mSurface.release(); 5291 } 5292 } 5293 5294 mAdded = false; 5295 } 5296 WindowManagerGlobal.getInstance().doRemoveView(this); 5297 } 5298 5299 public void requestUpdateConfiguration(Configuration config) { 5300 Message msg = mHandler.obtainMessage(MSG_UPDATE_CONFIGURATION, config); 5301 mHandler.sendMessage(msg); 5302 } 5303 5304 public void loadSystemProperties() { 5305 mHandler.post(new Runnable() { 5306 @Override 5307 public void run() { 5308 // Profiling 5309 mProfileRendering = SystemProperties.getBoolean(PROPERTY_PROFILE_RENDERING, false); 5310 profileRendering(mAttachInfo.mHasWindowFocus); 5311 5312 // Media (used by sound effects) 5313 mMediaDisabled = SystemProperties.getBoolean(PROPERTY_MEDIA_DISABLED, false); 5314 5315 // Hardware rendering 5316 if (mAttachInfo.mHardwareRenderer != null) { 5317 if (mAttachInfo.mHardwareRenderer.loadSystemProperties()) { 5318 invalidate(); 5319 } 5320 } 5321 5322 // Layout debugging 5323 boolean layout = SystemProperties.getBoolean(View.DEBUG_LAYOUT_PROPERTY, false); 5324 if (layout != mAttachInfo.mDebugLayout) { 5325 mAttachInfo.mDebugLayout = layout; 5326 if (!mHandler.hasMessages(MSG_INVALIDATE_WORLD)) { 5327 mHandler.sendEmptyMessageDelayed(MSG_INVALIDATE_WORLD, 200); 5328 } 5329 } 5330 } 5331 }); 5332 } 5333 5334 private void destroyHardwareRenderer() { 5335 AttachInfo attachInfo = mAttachInfo; 5336 HardwareRenderer hardwareRenderer = attachInfo.mHardwareRenderer; 5337 5338 if (hardwareRenderer != null) { 5339 if (mView != null) { 5340 hardwareRenderer.destroyHardwareResources(mView); 5341 } 5342 hardwareRenderer.destroy(true); 5343 hardwareRenderer.setRequested(false); 5344 5345 attachInfo.mHardwareRenderer = null; 5346 attachInfo.mHardwareAccelerated = false; 5347 } 5348 } 5349 5350 public void dispatchFinishInputConnection(InputConnection connection) { 5351 Message msg = mHandler.obtainMessage(MSG_FINISH_INPUT_CONNECTION, connection); 5352 mHandler.sendMessage(msg); 5353 } 5354 5355 public void dispatchResized(Rect frame, Rect overscanInsets, Rect contentInsets, 5356 Rect visibleInsets, boolean reportDraw, Configuration newConfig) { 5357 if (DEBUG_LAYOUT) Log.v(TAG, "Resizing " + this + ": frame=" + frame.toShortString() 5358 + " contentInsets=" + contentInsets.toShortString() 5359 + " visibleInsets=" + visibleInsets.toShortString() 5360 + " reportDraw=" + reportDraw); 5361 Message msg = mHandler.obtainMessage(reportDraw ? MSG_RESIZED_REPORT : MSG_RESIZED); 5362 if (mTranslator != null) { 5363 mTranslator.translateRectInScreenToAppWindow(frame); 5364 mTranslator.translateRectInScreenToAppWindow(overscanInsets); 5365 mTranslator.translateRectInScreenToAppWindow(contentInsets); 5366 mTranslator.translateRectInScreenToAppWindow(visibleInsets); 5367 } 5368 SomeArgs args = SomeArgs.obtain(); 5369 final boolean sameProcessCall = (Binder.getCallingPid() == android.os.Process.myPid()); 5370 args.arg1 = sameProcessCall ? new Rect(frame) : frame; 5371 args.arg2 = sameProcessCall ? new Rect(contentInsets) : contentInsets; 5372 args.arg3 = sameProcessCall ? new Rect(visibleInsets) : visibleInsets; 5373 args.arg4 = sameProcessCall && newConfig != null ? new Configuration(newConfig) : newConfig; 5374 args.arg5 = sameProcessCall ? new Rect(overscanInsets) : overscanInsets; 5375 msg.obj = args; 5376 mHandler.sendMessage(msg); 5377 } 5378 5379 public void dispatchMoved(int newX, int newY) { 5380 if (DEBUG_LAYOUT) Log.v(TAG, "Window moved " + this + ": newX=" + newX + " newY=" + newY); 5381 if (mTranslator != null) { 5382 PointF point = new PointF(newX, newY); 5383 mTranslator.translatePointInScreenToAppWindow(point); 5384 newX = (int) (point.x + 0.5); 5385 newY = (int) (point.y + 0.5); 5386 } 5387 Message msg = mHandler.obtainMessage(MSG_WINDOW_MOVED, newX, newY); 5388 mHandler.sendMessage(msg); 5389 } 5390 5391 /** 5392 * Represents a pending input event that is waiting in a queue. 5393 * 5394 * Input events are processed in serial order by the timestamp specified by 5395 * {@link InputEvent#getEventTimeNano()}. In general, the input dispatcher delivers 5396 * one input event to the application at a time and waits for the application 5397 * to finish handling it before delivering the next one. 5398 * 5399 * However, because the application or IME can synthesize and inject multiple 5400 * key events at a time without going through the input dispatcher, we end up 5401 * needing a queue on the application's side. 5402 */ 5403 private static final class QueuedInputEvent { 5404 public static final int FLAG_DELIVER_POST_IME = 1 << 0; 5405 public static final int FLAG_DEFERRED = 1 << 1; 5406 public static final int FLAG_FINISHED = 1 << 2; 5407 public static final int FLAG_FINISHED_HANDLED = 1 << 3; 5408 public static final int FLAG_RESYNTHESIZED = 1 << 4; 5409 5410 public QueuedInputEvent mNext; 5411 5412 public InputEvent mEvent; 5413 public InputEventReceiver mReceiver; 5414 public int mFlags; 5415 5416 public boolean shouldSkipIme() { 5417 if ((mFlags & FLAG_DELIVER_POST_IME) != 0) { 5418 return true; 5419 } 5420 return mEvent instanceof MotionEvent 5421 && mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER); 5422 } 5423 } 5424 5425 private QueuedInputEvent obtainQueuedInputEvent(InputEvent event, 5426 InputEventReceiver receiver, int flags) { 5427 QueuedInputEvent q = mQueuedInputEventPool; 5428 if (q != null) { 5429 mQueuedInputEventPoolSize -= 1; 5430 mQueuedInputEventPool = q.mNext; 5431 q.mNext = null; 5432 } else { 5433 q = new QueuedInputEvent(); 5434 } 5435 5436 q.mEvent = event; 5437 q.mReceiver = receiver; 5438 q.mFlags = flags; 5439 return q; 5440 } 5441 5442 private void recycleQueuedInputEvent(QueuedInputEvent q) { 5443 q.mEvent = null; 5444 q.mReceiver = null; 5445 5446 if (mQueuedInputEventPoolSize < MAX_QUEUED_INPUT_EVENT_POOL_SIZE) { 5447 mQueuedInputEventPoolSize += 1; 5448 q.mNext = mQueuedInputEventPool; 5449 mQueuedInputEventPool = q; 5450 } 5451 } 5452 5453 void enqueueInputEvent(InputEvent event) { 5454 enqueueInputEvent(event, null, 0, false); 5455 } 5456 5457 void enqueueInputEvent(InputEvent event, 5458 InputEventReceiver receiver, int flags, boolean processImmediately) { 5459 QueuedInputEvent q = obtainQueuedInputEvent(event, receiver, flags); 5460 5461 // Always enqueue the input event in order, regardless of its time stamp. 5462 // We do this because the application or the IME may inject key events 5463 // in response to touch events and we want to ensure that the injected keys 5464 // are processed in the order they were received and we cannot trust that 5465 // the time stamp of injected events are monotonic. 5466 QueuedInputEvent last = mPendingInputEventTail; 5467 if (last == null) { 5468 mPendingInputEventHead = q; 5469 mPendingInputEventTail = q; 5470 } else { 5471 last.mNext = q; 5472 mPendingInputEventTail = q; 5473 } 5474 mPendingInputEventCount += 1; 5475 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 5476 mPendingInputEventCount); 5477 5478 if (processImmediately) { 5479 doProcessInputEvents(); 5480 } else { 5481 scheduleProcessInputEvents(); 5482 } 5483 } 5484 5485 private void scheduleProcessInputEvents() { 5486 if (!mProcessInputEventsScheduled) { 5487 mProcessInputEventsScheduled = true; 5488 Message msg = mHandler.obtainMessage(MSG_PROCESS_INPUT_EVENTS); 5489 msg.setAsynchronous(true); 5490 mHandler.sendMessage(msg); 5491 } 5492 } 5493 5494 void doProcessInputEvents() { 5495 // Deliver all pending input events in the queue. 5496 while (mPendingInputEventHead != null) { 5497 QueuedInputEvent q = mPendingInputEventHead; 5498 mPendingInputEventHead = q.mNext; 5499 if (mPendingInputEventHead == null) { 5500 mPendingInputEventTail = null; 5501 } 5502 q.mNext = null; 5503 5504 mPendingInputEventCount -= 1; 5505 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 5506 mPendingInputEventCount); 5507 5508 deliverInputEvent(q); 5509 } 5510 5511 // We are done processing all input events that we can process right now 5512 // so we can clear the pending flag immediately. 5513 if (mProcessInputEventsScheduled) { 5514 mProcessInputEventsScheduled = false; 5515 mHandler.removeMessages(MSG_PROCESS_INPUT_EVENTS); 5516 } 5517 } 5518 5519 private void deliverInputEvent(QueuedInputEvent q) { 5520 Trace.asyncTraceBegin(Trace.TRACE_TAG_VIEW, "deliverInputEvent", 5521 q.mEvent.getSequenceNumber()); 5522 if (mInputEventConsistencyVerifier != null) { 5523 mInputEventConsistencyVerifier.onInputEvent(q.mEvent, 0); 5524 } 5525 5526 InputStage stage = q.shouldSkipIme() ? mFirstPostImeInputStage : mFirstInputStage; 5527 if (stage != null) { 5528 stage.deliver(q); 5529 } else { 5530 finishInputEvent(q); 5531 } 5532 } 5533 5534 private void finishInputEvent(QueuedInputEvent q) { 5535 Trace.asyncTraceEnd(Trace.TRACE_TAG_VIEW, "deliverInputEvent", 5536 q.mEvent.getSequenceNumber()); 5537 if (q.mReceiver != null) { 5538 boolean handled = (q.mFlags & QueuedInputEvent.FLAG_FINISHED_HANDLED) != 0; 5539 q.mReceiver.finishInputEvent(q.mEvent, handled); 5540 } else { 5541 q.mEvent.recycleIfNeededAfterDispatch(); 5542 } 5543 5544 recycleQueuedInputEvent(q); 5545 } 5546 5547 static boolean isTerminalInputEvent(InputEvent event) { 5548 if (event instanceof KeyEvent) { 5549 final KeyEvent keyEvent = (KeyEvent)event; 5550 return keyEvent.getAction() == KeyEvent.ACTION_UP; 5551 } else { 5552 final MotionEvent motionEvent = (MotionEvent)event; 5553 final int action = motionEvent.getAction(); 5554 return action == MotionEvent.ACTION_UP 5555 || action == MotionEvent.ACTION_CANCEL 5556 || action == MotionEvent.ACTION_HOVER_EXIT; 5557 } 5558 } 5559 5560 void scheduleConsumeBatchedInput() { 5561 if (!mConsumeBatchedInputScheduled) { 5562 mConsumeBatchedInputScheduled = true; 5563 mChoreographer.postCallback(Choreographer.CALLBACK_INPUT, 5564 mConsumedBatchedInputRunnable, null); 5565 } 5566 } 5567 5568 void unscheduleConsumeBatchedInput() { 5569 if (mConsumeBatchedInputScheduled) { 5570 mConsumeBatchedInputScheduled = false; 5571 mChoreographer.removeCallbacks(Choreographer.CALLBACK_INPUT, 5572 mConsumedBatchedInputRunnable, null); 5573 } 5574 } 5575 5576 void doConsumeBatchedInput(long frameTimeNanos) { 5577 if (mConsumeBatchedInputScheduled) { 5578 mConsumeBatchedInputScheduled = false; 5579 if (mInputEventReceiver != null) { 5580 if (mInputEventReceiver.consumeBatchedInputEvents(frameTimeNanos)) { 5581 // If we consumed a batch here, we want to go ahead and schedule the 5582 // consumption of batched input events on the next frame. Otherwise, we would 5583 // wait until we have more input events pending and might get starved by other 5584 // things occurring in the process. 5585 scheduleConsumeBatchedInput(); 5586 } 5587 } 5588 doProcessInputEvents(); 5589 } 5590 } 5591 5592 final class TraversalRunnable implements Runnable { 5593 @Override 5594 public void run() { 5595 doTraversal(); 5596 } 5597 } 5598 final TraversalRunnable mTraversalRunnable = new TraversalRunnable(); 5599 5600 final class WindowInputEventReceiver extends InputEventReceiver { 5601 public WindowInputEventReceiver(InputChannel inputChannel, Looper looper) { 5602 super(inputChannel, looper); 5603 } 5604 5605 @Override 5606 public void onInputEvent(InputEvent event) { 5607 enqueueInputEvent(event, this, 0, true); 5608 } 5609 5610 @Override 5611 public void onBatchedInputEventPending() { 5612 scheduleConsumeBatchedInput(); 5613 } 5614 5615 @Override 5616 public void dispose() { 5617 unscheduleConsumeBatchedInput(); 5618 super.dispose(); 5619 } 5620 } 5621 WindowInputEventReceiver mInputEventReceiver; 5622 5623 final class ConsumeBatchedInputRunnable implements Runnable { 5624 @Override 5625 public void run() { 5626 doConsumeBatchedInput(mChoreographer.getFrameTimeNanos()); 5627 } 5628 } 5629 final ConsumeBatchedInputRunnable mConsumedBatchedInputRunnable = 5630 new ConsumeBatchedInputRunnable(); 5631 boolean mConsumeBatchedInputScheduled; 5632 5633 final class InvalidateOnAnimationRunnable implements Runnable { 5634 private boolean mPosted; 5635 private final ArrayList<View> mViews = new ArrayList<View>(); 5636 private final ArrayList<AttachInfo.InvalidateInfo> mViewRects = 5637 new ArrayList<AttachInfo.InvalidateInfo>(); 5638 private View[] mTempViews; 5639 private AttachInfo.InvalidateInfo[] mTempViewRects; 5640 5641 public void addView(View view) { 5642 synchronized (this) { 5643 mViews.add(view); 5644 postIfNeededLocked(); 5645 } 5646 } 5647 5648 public void addViewRect(AttachInfo.InvalidateInfo info) { 5649 synchronized (this) { 5650 mViewRects.add(info); 5651 postIfNeededLocked(); 5652 } 5653 } 5654 5655 public void removeView(View view) { 5656 synchronized (this) { 5657 mViews.remove(view); 5658 5659 for (int i = mViewRects.size(); i-- > 0; ) { 5660 AttachInfo.InvalidateInfo info = mViewRects.get(i); 5661 if (info.target == view) { 5662 mViewRects.remove(i); 5663 info.recycle(); 5664 } 5665 } 5666 5667 if (mPosted && mViews.isEmpty() && mViewRects.isEmpty()) { 5668 mChoreographer.removeCallbacks(Choreographer.CALLBACK_ANIMATION, this, null); 5669 mPosted = false; 5670 } 5671 } 5672 } 5673 5674 @Override 5675 public void run() { 5676 final int viewCount; 5677 final int viewRectCount; 5678 synchronized (this) { 5679 mPosted = false; 5680 5681 viewCount = mViews.size(); 5682 if (viewCount != 0) { 5683 mTempViews = mViews.toArray(mTempViews != null 5684 ? mTempViews : new View[viewCount]); 5685 mViews.clear(); 5686 } 5687 5688 viewRectCount = mViewRects.size(); 5689 if (viewRectCount != 0) { 5690 mTempViewRects = mViewRects.toArray(mTempViewRects != null 5691 ? mTempViewRects : new AttachInfo.InvalidateInfo[viewRectCount]); 5692 mViewRects.clear(); 5693 } 5694 } 5695 5696 for (int i = 0; i < viewCount; i++) { 5697 mTempViews[i].invalidate(); 5698 mTempViews[i] = null; 5699 } 5700 5701 for (int i = 0; i < viewRectCount; i++) { 5702 final View.AttachInfo.InvalidateInfo info = mTempViewRects[i]; 5703 info.target.invalidate(info.left, info.top, info.right, info.bottom); 5704 info.recycle(); 5705 } 5706 } 5707 5708 private void postIfNeededLocked() { 5709 if (!mPosted) { 5710 mChoreographer.postCallback(Choreographer.CALLBACK_ANIMATION, this, null); 5711 mPosted = true; 5712 } 5713 } 5714 } 5715 final InvalidateOnAnimationRunnable mInvalidateOnAnimationRunnable = 5716 new InvalidateOnAnimationRunnable(); 5717 5718 public void dispatchInvalidateDelayed(View view, long delayMilliseconds) { 5719 Message msg = mHandler.obtainMessage(MSG_INVALIDATE, view); 5720 mHandler.sendMessageDelayed(msg, delayMilliseconds); 5721 } 5722 5723 public void dispatchInvalidateRectDelayed(AttachInfo.InvalidateInfo info, 5724 long delayMilliseconds) { 5725 final Message msg = mHandler.obtainMessage(MSG_INVALIDATE_RECT, info); 5726 mHandler.sendMessageDelayed(msg, delayMilliseconds); 5727 } 5728 5729 public void dispatchInvalidateOnAnimation(View view) { 5730 mInvalidateOnAnimationRunnable.addView(view); 5731 } 5732 5733 public void dispatchInvalidateRectOnAnimation(AttachInfo.InvalidateInfo info) { 5734 mInvalidateOnAnimationRunnable.addViewRect(info); 5735 } 5736 5737 public void cancelInvalidate(View view) { 5738 mHandler.removeMessages(MSG_INVALIDATE, view); 5739 // fixme: might leak the AttachInfo.InvalidateInfo objects instead of returning 5740 // them to the pool 5741 mHandler.removeMessages(MSG_INVALIDATE_RECT, view); 5742 mInvalidateOnAnimationRunnable.removeView(view); 5743 } 5744 5745 public void dispatchInputEvent(InputEvent event) { 5746 Message msg = mHandler.obtainMessage(MSG_DISPATCH_INPUT_EVENT, event); 5747 msg.setAsynchronous(true); 5748 mHandler.sendMessage(msg); 5749 } 5750 5751 public void dispatchKeyFromIme(KeyEvent event) { 5752 Message msg = mHandler.obtainMessage(MSG_DISPATCH_KEY_FROM_IME, event); 5753 msg.setAsynchronous(true); 5754 mHandler.sendMessage(msg); 5755 } 5756 5757 public void dispatchUnhandledKey(KeyEvent event) { 5758 if ((event.getFlags() & KeyEvent.FLAG_FALLBACK) == 0) { 5759 // Some fallback keys are decided by the ViewRoot as they might have special 5760 // properties (e.g. are locale aware). These take precedence over fallbacks defined by 5761 // the kcm. 5762 final KeyCharacterMap kcm = event.getKeyCharacterMap(); 5763 final int keyCode = event.getKeyCode(); 5764 final int metaState = event.getMetaState(); 5765 5766 // Check for fallback actions specified by the key character map. 5767 KeyCharacterMap.FallbackAction fallbackAction = 5768 kcm.getFallbackAction(keyCode, metaState); 5769 if (fallbackAction != null) { 5770 final int flags = event.getFlags() | KeyEvent.FLAG_FALLBACK; 5771 KeyEvent fallbackEvent = KeyEvent.obtain( 5772 event.getDownTime(), event.getEventTime(), 5773 event.getAction(), fallbackAction.keyCode, 5774 event.getRepeatCount(), fallbackAction.metaState, 5775 event.getDeviceId(), event.getScanCode(), 5776 flags, event.getSource(), null); 5777 fallbackAction.recycle(); 5778 dispatchInputEvent(fallbackEvent); 5779 } 5780 } 5781 } 5782 5783 public void dispatchAppVisibility(boolean visible) { 5784 Message msg = mHandler.obtainMessage(MSG_DISPATCH_APP_VISIBILITY); 5785 msg.arg1 = visible ? 1 : 0; 5786 mHandler.sendMessage(msg); 5787 } 5788 5789 public void dispatchScreenStateChange(boolean on) { 5790 Message msg = mHandler.obtainMessage(MSG_DISPATCH_SCREEN_STATE); 5791 msg.arg1 = on ? 1 : 0; 5792 mHandler.sendMessage(msg); 5793 } 5794 5795 public void dispatchGetNewSurface() { 5796 Message msg = mHandler.obtainMessage(MSG_DISPATCH_GET_NEW_SURFACE); 5797 mHandler.sendMessage(msg); 5798 } 5799 5800 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 5801 Message msg = Message.obtain(); 5802 msg.what = MSG_WINDOW_FOCUS_CHANGED; 5803 msg.arg1 = hasFocus ? 1 : 0; 5804 msg.arg2 = inTouchMode ? 1 : 0; 5805 mHandler.sendMessage(msg); 5806 } 5807 5808 public void dispatchCloseSystemDialogs(String reason) { 5809 Message msg = Message.obtain(); 5810 msg.what = MSG_CLOSE_SYSTEM_DIALOGS; 5811 msg.obj = reason; 5812 mHandler.sendMessage(msg); 5813 } 5814 5815 public void dispatchDragEvent(DragEvent event) { 5816 final int what; 5817 if (event.getAction() == DragEvent.ACTION_DRAG_LOCATION) { 5818 what = MSG_DISPATCH_DRAG_LOCATION_EVENT; 5819 mHandler.removeMessages(what); 5820 } else { 5821 what = MSG_DISPATCH_DRAG_EVENT; 5822 } 5823 Message msg = mHandler.obtainMessage(what, event); 5824 mHandler.sendMessage(msg); 5825 } 5826 5827 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 5828 int localValue, int localChanges) { 5829 SystemUiVisibilityInfo args = new SystemUiVisibilityInfo(); 5830 args.seq = seq; 5831 args.globalVisibility = globalVisibility; 5832 args.localValue = localValue; 5833 args.localChanges = localChanges; 5834 mHandler.sendMessage(mHandler.obtainMessage(MSG_DISPATCH_SYSTEM_UI_VISIBILITY, args)); 5835 } 5836 5837 public void dispatchDoneAnimating() { 5838 mHandler.sendEmptyMessage(MSG_DISPATCH_DONE_ANIMATING); 5839 } 5840 5841 public void dispatchCheckFocus() { 5842 if (!mHandler.hasMessages(MSG_CHECK_FOCUS)) { 5843 // This will result in a call to checkFocus() below. 5844 mHandler.sendEmptyMessage(MSG_CHECK_FOCUS); 5845 } 5846 } 5847 5848 /** 5849 * Post a callback to send a 5850 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 5851 * This event is send at most once every 5852 * {@link ViewConfiguration#getSendRecurringAccessibilityEventsInterval()}. 5853 */ 5854 private void postSendWindowContentChangedCallback(View source, int changeType) { 5855 if (mSendWindowContentChangedAccessibilityEvent == null) { 5856 mSendWindowContentChangedAccessibilityEvent = 5857 new SendWindowContentChangedAccessibilityEvent(); 5858 } 5859 mSendWindowContentChangedAccessibilityEvent.runOrPost(source, changeType); 5860 } 5861 5862 /** 5863 * Remove a posted callback to send a 5864 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 5865 */ 5866 private void removeSendWindowContentChangedCallback() { 5867 if (mSendWindowContentChangedAccessibilityEvent != null) { 5868 mHandler.removeCallbacks(mSendWindowContentChangedAccessibilityEvent); 5869 } 5870 } 5871 5872 @Override 5873 public boolean showContextMenuForChild(View originalView) { 5874 return false; 5875 } 5876 5877 @Override 5878 public ActionMode startActionModeForChild(View originalView, ActionMode.Callback callback) { 5879 return null; 5880 } 5881 5882 @Override 5883 public void createContextMenu(ContextMenu menu) { 5884 } 5885 5886 @Override 5887 public void childDrawableStateChanged(View child) { 5888 } 5889 5890 @Override 5891 public boolean requestSendAccessibilityEvent(View child, AccessibilityEvent event) { 5892 if (mView == null) { 5893 return false; 5894 } 5895 // Intercept accessibility focus events fired by virtual nodes to keep 5896 // track of accessibility focus position in such nodes. 5897 final int eventType = event.getEventType(); 5898 switch (eventType) { 5899 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUSED: { 5900 final long sourceNodeId = event.getSourceNodeId(); 5901 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 5902 sourceNodeId); 5903 View source = mView.findViewByAccessibilityId(accessibilityViewId); 5904 if (source != null) { 5905 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 5906 if (provider != null) { 5907 AccessibilityNodeInfo node = provider.createAccessibilityNodeInfo( 5908 AccessibilityNodeInfo.getVirtualDescendantId(sourceNodeId)); 5909 setAccessibilityFocus(source, node); 5910 } 5911 } 5912 } break; 5913 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUS_CLEARED: { 5914 final long sourceNodeId = event.getSourceNodeId(); 5915 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 5916 sourceNodeId); 5917 View source = mView.findViewByAccessibilityId(accessibilityViewId); 5918 if (source != null) { 5919 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 5920 if (provider != null) { 5921 setAccessibilityFocus(null, null); 5922 } 5923 } 5924 } break; 5925 } 5926 mAccessibilityManager.sendAccessibilityEvent(event); 5927 return true; 5928 } 5929 5930 @Override 5931 public void notifySubtreeAccessibilityStateChanged(View child, View source, int changeType) { 5932 postSendWindowContentChangedCallback(source, changeType); 5933 } 5934 5935 @Override 5936 public boolean canResolveLayoutDirection() { 5937 return true; 5938 } 5939 5940 @Override 5941 public boolean isLayoutDirectionResolved() { 5942 return true; 5943 } 5944 5945 @Override 5946 public int getLayoutDirection() { 5947 return View.LAYOUT_DIRECTION_RESOLVED_DEFAULT; 5948 } 5949 5950 @Override 5951 public boolean canResolveTextDirection() { 5952 return true; 5953 } 5954 5955 @Override 5956 public boolean isTextDirectionResolved() { 5957 return true; 5958 } 5959 5960 @Override 5961 public int getTextDirection() { 5962 return View.TEXT_DIRECTION_RESOLVED_DEFAULT; 5963 } 5964 5965 @Override 5966 public boolean canResolveTextAlignment() { 5967 return true; 5968 } 5969 5970 @Override 5971 public boolean isTextAlignmentResolved() { 5972 return true; 5973 } 5974 5975 @Override 5976 public int getTextAlignment() { 5977 return View.TEXT_ALIGNMENT_RESOLVED_DEFAULT; 5978 } 5979 5980 private View getCommonPredecessor(View first, View second) { 5981 if (mAttachInfo != null) { 5982 if (mTempHashSet == null) { 5983 mTempHashSet = new HashSet<View>(); 5984 } 5985 HashSet<View> seen = mTempHashSet; 5986 seen.clear(); 5987 View firstCurrent = first; 5988 while (firstCurrent != null) { 5989 seen.add(firstCurrent); 5990 ViewParent firstCurrentParent = firstCurrent.mParent; 5991 if (firstCurrentParent instanceof View) { 5992 firstCurrent = (View) firstCurrentParent; 5993 } else { 5994 firstCurrent = null; 5995 } 5996 } 5997 View secondCurrent = second; 5998 while (secondCurrent != null) { 5999 if (seen.contains(secondCurrent)) { 6000 seen.clear(); 6001 return secondCurrent; 6002 } 6003 ViewParent secondCurrentParent = secondCurrent.mParent; 6004 if (secondCurrentParent instanceof View) { 6005 secondCurrent = (View) secondCurrentParent; 6006 } else { 6007 secondCurrent = null; 6008 } 6009 } 6010 seen.clear(); 6011 } 6012 return null; 6013 } 6014 6015 void checkThread() { 6016 if (mThread != Thread.currentThread()) { 6017 throw new CalledFromWrongThreadException( 6018 "Only the original thread that created a view hierarchy can touch its views."); 6019 } 6020 } 6021 6022 @Override 6023 public void requestDisallowInterceptTouchEvent(boolean disallowIntercept) { 6024 // ViewAncestor never intercepts touch event, so this can be a no-op 6025 } 6026 6027 @Override 6028 public boolean requestChildRectangleOnScreen(View child, Rect rectangle, boolean immediate) { 6029 final boolean scrolled = scrollToRectOrFocus(rectangle, immediate); 6030 if (rectangle != null) { 6031 mTempRect.set(rectangle); 6032 mTempRect.offset(0, -mCurScrollY); 6033 mTempRect.offset(mAttachInfo.mWindowLeft, mAttachInfo.mWindowTop); 6034 try { 6035 mWindowSession.onRectangleOnScreenRequested(mWindow, mTempRect, immediate); 6036 } catch (RemoteException re) { 6037 /* ignore */ 6038 } 6039 } 6040 return scrolled; 6041 } 6042 6043 @Override 6044 public void childHasTransientStateChanged(View child, boolean hasTransientState) { 6045 // Do nothing. 6046 } 6047 6048 void changeCanvasOpacity(boolean opaque) { 6049 // TODO(romainguy): recreate Canvas (software or hardware) to reflect the opacity change. 6050 Log.d(TAG, "changeCanvasOpacity: opaque=" + opaque); 6051 } 6052 6053 class TakenSurfaceHolder extends BaseSurfaceHolder { 6054 @Override 6055 public boolean onAllowLockCanvas() { 6056 return mDrawingAllowed; 6057 } 6058 6059 @Override 6060 public void onRelayoutContainer() { 6061 // Not currently interesting -- from changing between fixed and layout size. 6062 } 6063 6064 @Override 6065 public void setFormat(int format) { 6066 ((RootViewSurfaceTaker)mView).setSurfaceFormat(format); 6067 } 6068 6069 @Override 6070 public void setType(int type) { 6071 ((RootViewSurfaceTaker)mView).setSurfaceType(type); 6072 } 6073 6074 @Override 6075 public void onUpdateSurface() { 6076 // We take care of format and type changes on our own. 6077 throw new IllegalStateException("Shouldn't be here"); 6078 } 6079 6080 @Override 6081 public boolean isCreating() { 6082 return mIsCreating; 6083 } 6084 6085 @Override 6086 public void setFixedSize(int width, int height) { 6087 throw new UnsupportedOperationException( 6088 "Currently only support sizing from layout"); 6089 } 6090 6091 @Override 6092 public void setKeepScreenOn(boolean screenOn) { 6093 ((RootViewSurfaceTaker)mView).setSurfaceKeepScreenOn(screenOn); 6094 } 6095 } 6096 6097 static class W extends IWindow.Stub { 6098 private final WeakReference<ViewRootImpl> mViewAncestor; 6099 private final IWindowSession mWindowSession; 6100 6101 W(ViewRootImpl viewAncestor) { 6102 mViewAncestor = new WeakReference<ViewRootImpl>(viewAncestor); 6103 mWindowSession = viewAncestor.mWindowSession; 6104 } 6105 6106 @Override 6107 public void resized(Rect frame, Rect overscanInsets, Rect contentInsets, 6108 Rect visibleInsets, boolean reportDraw, Configuration newConfig) { 6109 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6110 if (viewAncestor != null) { 6111 viewAncestor.dispatchResized(frame, overscanInsets, contentInsets, 6112 visibleInsets, reportDraw, newConfig); 6113 } 6114 } 6115 6116 @Override 6117 public void moved(int newX, int newY) { 6118 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6119 if (viewAncestor != null) { 6120 viewAncestor.dispatchMoved(newX, newY); 6121 } 6122 } 6123 6124 @Override 6125 public void dispatchAppVisibility(boolean visible) { 6126 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6127 if (viewAncestor != null) { 6128 viewAncestor.dispatchAppVisibility(visible); 6129 } 6130 } 6131 6132 @Override 6133 public void dispatchScreenState(boolean on) { 6134 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6135 if (viewAncestor != null) { 6136 viewAncestor.dispatchScreenStateChange(on); 6137 } 6138 } 6139 6140 @Override 6141 public void dispatchGetNewSurface() { 6142 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6143 if (viewAncestor != null) { 6144 viewAncestor.dispatchGetNewSurface(); 6145 } 6146 } 6147 6148 @Override 6149 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 6150 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6151 if (viewAncestor != null) { 6152 viewAncestor.windowFocusChanged(hasFocus, inTouchMode); 6153 } 6154 } 6155 6156 private static int checkCallingPermission(String permission) { 6157 try { 6158 return ActivityManagerNative.getDefault().checkPermission( 6159 permission, Binder.getCallingPid(), Binder.getCallingUid()); 6160 } catch (RemoteException e) { 6161 return PackageManager.PERMISSION_DENIED; 6162 } 6163 } 6164 6165 @Override 6166 public void executeCommand(String command, String parameters, ParcelFileDescriptor out) { 6167 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6168 if (viewAncestor != null) { 6169 final View view = viewAncestor.mView; 6170 if (view != null) { 6171 if (checkCallingPermission(Manifest.permission.DUMP) != 6172 PackageManager.PERMISSION_GRANTED) { 6173 throw new SecurityException("Insufficient permissions to invoke" 6174 + " executeCommand() from pid=" + Binder.getCallingPid() 6175 + ", uid=" + Binder.getCallingUid()); 6176 } 6177 6178 OutputStream clientStream = null; 6179 try { 6180 clientStream = new ParcelFileDescriptor.AutoCloseOutputStream(out); 6181 ViewDebug.dispatchCommand(view, command, parameters, clientStream); 6182 } catch (IOException e) { 6183 e.printStackTrace(); 6184 } finally { 6185 if (clientStream != null) { 6186 try { 6187 clientStream.close(); 6188 } catch (IOException e) { 6189 e.printStackTrace(); 6190 } 6191 } 6192 } 6193 } 6194 } 6195 } 6196 6197 @Override 6198 public void closeSystemDialogs(String reason) { 6199 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6200 if (viewAncestor != null) { 6201 viewAncestor.dispatchCloseSystemDialogs(reason); 6202 } 6203 } 6204 6205 @Override 6206 public void dispatchWallpaperOffsets(float x, float y, float xStep, float yStep, 6207 boolean sync) { 6208 if (sync) { 6209 try { 6210 mWindowSession.wallpaperOffsetsComplete(asBinder()); 6211 } catch (RemoteException e) { 6212 } 6213 } 6214 } 6215 6216 @Override 6217 public void dispatchWallpaperCommand(String action, int x, int y, 6218 int z, Bundle extras, boolean sync) { 6219 if (sync) { 6220 try { 6221 mWindowSession.wallpaperCommandComplete(asBinder(), null); 6222 } catch (RemoteException e) { 6223 } 6224 } 6225 } 6226 6227 /* Drag/drop */ 6228 @Override 6229 public void dispatchDragEvent(DragEvent event) { 6230 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6231 if (viewAncestor != null) { 6232 viewAncestor.dispatchDragEvent(event); 6233 } 6234 } 6235 6236 @Override 6237 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 6238 int localValue, int localChanges) { 6239 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6240 if (viewAncestor != null) { 6241 viewAncestor.dispatchSystemUiVisibilityChanged(seq, globalVisibility, 6242 localValue, localChanges); 6243 } 6244 } 6245 6246 @Override 6247 public void doneAnimating() { 6248 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6249 if (viewAncestor != null) { 6250 viewAncestor.dispatchDoneAnimating(); 6251 } 6252 } 6253 } 6254 6255 public static final class CalledFromWrongThreadException extends AndroidRuntimeException { 6256 public CalledFromWrongThreadException(String msg) { 6257 super(msg); 6258 } 6259 } 6260 6261 static RunQueue getRunQueue() { 6262 RunQueue rq = sRunQueues.get(); 6263 if (rq != null) { 6264 return rq; 6265 } 6266 rq = new RunQueue(); 6267 sRunQueues.set(rq); 6268 return rq; 6269 } 6270 6271 /** 6272 * The run queue is used to enqueue pending work from Views when no Handler is 6273 * attached. The work is executed during the next call to performTraversals on 6274 * the thread. 6275 * @hide 6276 */ 6277 static final class RunQueue { 6278 private final ArrayList<HandlerAction> mActions = new ArrayList<HandlerAction>(); 6279 6280 void post(Runnable action) { 6281 postDelayed(action, 0); 6282 } 6283 6284 void postDelayed(Runnable action, long delayMillis) { 6285 HandlerAction handlerAction = new HandlerAction(); 6286 handlerAction.action = action; 6287 handlerAction.delay = delayMillis; 6288 6289 synchronized (mActions) { 6290 mActions.add(handlerAction); 6291 } 6292 } 6293 6294 void removeCallbacks(Runnable action) { 6295 final HandlerAction handlerAction = new HandlerAction(); 6296 handlerAction.action = action; 6297 6298 synchronized (mActions) { 6299 final ArrayList<HandlerAction> actions = mActions; 6300 6301 while (actions.remove(handlerAction)) { 6302 // Keep going 6303 } 6304 } 6305 } 6306 6307 void executeActions(Handler handler) { 6308 synchronized (mActions) { 6309 final ArrayList<HandlerAction> actions = mActions; 6310 final int count = actions.size(); 6311 6312 for (int i = 0; i < count; i++) { 6313 final HandlerAction handlerAction = actions.get(i); 6314 handler.postDelayed(handlerAction.action, handlerAction.delay); 6315 } 6316 6317 actions.clear(); 6318 } 6319 } 6320 6321 private static class HandlerAction { 6322 Runnable action; 6323 long delay; 6324 6325 @Override 6326 public boolean equals(Object o) { 6327 if (this == o) return true; 6328 if (o == null || getClass() != o.getClass()) return false; 6329 6330 HandlerAction that = (HandlerAction) o; 6331 return !(action != null ? !action.equals(that.action) : that.action != null); 6332 6333 } 6334 6335 @Override 6336 public int hashCode() { 6337 int result = action != null ? action.hashCode() : 0; 6338 result = 31 * result + (int) (delay ^ (delay >>> 32)); 6339 return result; 6340 } 6341 } 6342 } 6343 6344 /** 6345 * Class for managing the accessibility interaction connection 6346 * based on the global accessibility state. 6347 */ 6348 final class AccessibilityInteractionConnectionManager 6349 implements AccessibilityStateChangeListener { 6350 @Override 6351 public void onAccessibilityStateChanged(boolean enabled) { 6352 if (enabled) { 6353 ensureConnection(); 6354 if (mAttachInfo != null && mAttachInfo.mHasWindowFocus) { 6355 mView.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 6356 View focusedView = mView.findFocus(); 6357 if (focusedView != null && focusedView != mView) { 6358 focusedView.sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_FOCUSED); 6359 } 6360 } 6361 } else { 6362 ensureNoConnection(); 6363 mHandler.obtainMessage(MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST).sendToTarget(); 6364 } 6365 } 6366 6367 public void ensureConnection() { 6368 if (mAttachInfo != null) { 6369 final boolean registered = 6370 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED_ITEM_ID; 6371 if (!registered) { 6372 mAttachInfo.mAccessibilityWindowId = 6373 mAccessibilityManager.addAccessibilityInteractionConnection(mWindow, 6374 new AccessibilityInteractionConnection(ViewRootImpl.this)); 6375 } 6376 } 6377 } 6378 6379 public void ensureNoConnection() { 6380 final boolean registered = 6381 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED_ITEM_ID; 6382 if (registered) { 6383 mAttachInfo.mAccessibilityWindowId = AccessibilityNodeInfo.UNDEFINED_ITEM_ID; 6384 mAccessibilityManager.removeAccessibilityInteractionConnection(mWindow); 6385 } 6386 } 6387 } 6388 6389 /** 6390 * This class is an interface this ViewAncestor provides to the 6391 * AccessibilityManagerService to the latter can interact with 6392 * the view hierarchy in this ViewAncestor. 6393 */ 6394 static final class AccessibilityInteractionConnection 6395 extends IAccessibilityInteractionConnection.Stub { 6396 private final WeakReference<ViewRootImpl> mViewRootImpl; 6397 6398 AccessibilityInteractionConnection(ViewRootImpl viewRootImpl) { 6399 mViewRootImpl = new WeakReference<ViewRootImpl>(viewRootImpl); 6400 } 6401 6402 @Override 6403 public void findAccessibilityNodeInfoByAccessibilityId(long accessibilityNodeId, 6404 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 6405 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6406 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6407 if (viewRootImpl != null && viewRootImpl.mView != null) { 6408 viewRootImpl.getAccessibilityInteractionController() 6409 .findAccessibilityNodeInfoByAccessibilityIdClientThread(accessibilityNodeId, 6410 interactionId, callback, flags, interrogatingPid, interrogatingTid, 6411 spec); 6412 } else { 6413 // We cannot make the call and notify the caller so it does not wait. 6414 try { 6415 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 6416 } catch (RemoteException re) { 6417 /* best effort - ignore */ 6418 } 6419 } 6420 } 6421 6422 @Override 6423 public void performAccessibilityAction(long accessibilityNodeId, int action, 6424 Bundle arguments, int interactionId, 6425 IAccessibilityInteractionConnectionCallback callback, int flags, 6426 int interogatingPid, long interrogatingTid) { 6427 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6428 if (viewRootImpl != null && viewRootImpl.mView != null) { 6429 viewRootImpl.getAccessibilityInteractionController() 6430 .performAccessibilityActionClientThread(accessibilityNodeId, action, arguments, 6431 interactionId, callback, flags, interogatingPid, interrogatingTid); 6432 } else { 6433 // We cannot make the call and notify the caller so it does not wait. 6434 try { 6435 callback.setPerformAccessibilityActionResult(false, interactionId); 6436 } catch (RemoteException re) { 6437 /* best effort - ignore */ 6438 } 6439 } 6440 } 6441 6442 @Override 6443 public void findAccessibilityNodeInfosByViewId(long accessibilityNodeId, 6444 String viewId, int interactionId, 6445 IAccessibilityInteractionConnectionCallback callback, int flags, 6446 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6447 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6448 if (viewRootImpl != null && viewRootImpl.mView != null) { 6449 viewRootImpl.getAccessibilityInteractionController() 6450 .findAccessibilityNodeInfosByViewIdClientThread(accessibilityNodeId, 6451 viewId, interactionId, callback, flags, interrogatingPid, 6452 interrogatingTid, spec); 6453 } else { 6454 // We cannot make the call and notify the caller so it does not wait. 6455 try { 6456 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6457 } catch (RemoteException re) { 6458 /* best effort - ignore */ 6459 } 6460 } 6461 } 6462 6463 @Override 6464 public void findAccessibilityNodeInfosByText(long accessibilityNodeId, String text, 6465 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 6466 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6467 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6468 if (viewRootImpl != null && viewRootImpl.mView != null) { 6469 viewRootImpl.getAccessibilityInteractionController() 6470 .findAccessibilityNodeInfosByTextClientThread(accessibilityNodeId, text, 6471 interactionId, callback, flags, interrogatingPid, interrogatingTid, 6472 spec); 6473 } else { 6474 // We cannot make the call and notify the caller so it does not wait. 6475 try { 6476 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 6477 } catch (RemoteException re) { 6478 /* best effort - ignore */ 6479 } 6480 } 6481 } 6482 6483 @Override 6484 public void findFocus(long accessibilityNodeId, int focusType, int interactionId, 6485 IAccessibilityInteractionConnectionCallback callback, int flags, 6486 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6487 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6488 if (viewRootImpl != null && viewRootImpl.mView != null) { 6489 viewRootImpl.getAccessibilityInteractionController() 6490 .findFocusClientThread(accessibilityNodeId, focusType, interactionId, callback, 6491 flags, interrogatingPid, interrogatingTid, spec); 6492 } else { 6493 // We cannot make the call and notify the caller so it does not wait. 6494 try { 6495 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6496 } catch (RemoteException re) { 6497 /* best effort - ignore */ 6498 } 6499 } 6500 } 6501 6502 @Override 6503 public void focusSearch(long accessibilityNodeId, int direction, int interactionId, 6504 IAccessibilityInteractionConnectionCallback callback, int flags, 6505 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6506 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6507 if (viewRootImpl != null && viewRootImpl.mView != null) { 6508 viewRootImpl.getAccessibilityInteractionController() 6509 .focusSearchClientThread(accessibilityNodeId, direction, interactionId, 6510 callback, flags, interrogatingPid, interrogatingTid, spec); 6511 } else { 6512 // We cannot make the call and notify the caller so it does not wait. 6513 try { 6514 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6515 } catch (RemoteException re) { 6516 /* best effort - ignore */ 6517 } 6518 } 6519 } 6520 } 6521 6522 private class SendWindowContentChangedAccessibilityEvent implements Runnable { 6523 private int mChangeTypes = 0; 6524 6525 public View mSource; 6526 public long mLastEventTimeMillis; 6527 6528 @Override 6529 public void run() { 6530 // The accessibility may be turned off while we were waiting so check again. 6531 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 6532 mLastEventTimeMillis = SystemClock.uptimeMillis(); 6533 AccessibilityEvent event = AccessibilityEvent.obtain(); 6534 event.setEventType(AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED); 6535 event.setContentChangeTypes(mChangeTypes); 6536 mSource.sendAccessibilityEventUnchecked(event); 6537 } else { 6538 mLastEventTimeMillis = 0; 6539 } 6540 // In any case reset to initial state. 6541 mSource.resetSubtreeAccessibilityStateChanged(); 6542 mSource = null; 6543 mChangeTypes = 0; 6544 } 6545 6546 public void runOrPost(View source, int changeType) { 6547 if (mSource != null) { 6548 // If there is no common predecessor, then mSource points to 6549 // a removed view, hence in this case always prefer the source. 6550 View predecessor = getCommonPredecessor(mSource, source); 6551 mSource = (predecessor != null) ? predecessor : source; 6552 mChangeTypes |= changeType; 6553 return; 6554 } 6555 mSource = source; 6556 mChangeTypes = changeType; 6557 final long timeSinceLastMillis = SystemClock.uptimeMillis() - mLastEventTimeMillis; 6558 final long minEventIntevalMillis = 6559 ViewConfiguration.getSendRecurringAccessibilityEventsInterval(); 6560 if (timeSinceLastMillis >= minEventIntevalMillis) { 6561 mSource.removeCallbacks(this); 6562 run(); 6563 } else { 6564 mSource.postDelayed(this, minEventIntevalMillis - timeSinceLastMillis); 6565 } 6566 } 6567 } 6568} 6569