ViewRootImpl.java revision bd95740648372449a4d5c164d7050eee352d4c24
1/* 2 * Copyright (C) 2006 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.view; 18 19import android.Manifest; 20import android.animation.LayoutTransition; 21import android.app.ActivityManagerNative; 22import android.content.ClipDescription; 23import android.content.ComponentCallbacks; 24import android.content.ComponentCallbacks2; 25import android.content.Context; 26import android.content.pm.PackageManager; 27import android.content.res.CompatibilityInfo; 28import android.content.res.Configuration; 29import android.content.res.Resources; 30import android.graphics.Canvas; 31import android.graphics.Paint; 32import android.graphics.PixelFormat; 33import android.graphics.Point; 34import android.graphics.PointF; 35import android.graphics.PorterDuff; 36import android.graphics.Rect; 37import android.graphics.Region; 38import android.graphics.drawable.Drawable; 39import android.media.AudioManager; 40import android.os.Binder; 41import android.os.Bundle; 42import android.os.Debug; 43import android.os.Handler; 44import android.os.Looper; 45import android.os.Message; 46import android.os.ParcelFileDescriptor; 47import android.os.PowerManager; 48import android.os.Process; 49import android.os.RemoteException; 50import android.os.SystemClock; 51import android.os.SystemProperties; 52import android.os.Trace; 53import android.util.AndroidRuntimeException; 54import android.util.DisplayMetrics; 55import android.util.Log; 56import android.util.Slog; 57import android.util.TypedValue; 58import android.view.View.AttachInfo; 59import android.view.View.MeasureSpec; 60import android.view.accessibility.AccessibilityEvent; 61import android.view.accessibility.AccessibilityManager; 62import android.view.accessibility.AccessibilityManager.AccessibilityStateChangeListener; 63import android.view.accessibility.AccessibilityNodeInfo; 64import android.view.accessibility.AccessibilityNodeProvider; 65import android.view.accessibility.IAccessibilityInteractionConnection; 66import android.view.accessibility.IAccessibilityInteractionConnectionCallback; 67import android.view.animation.AccelerateDecelerateInterpolator; 68import android.view.animation.Interpolator; 69import android.view.inputmethod.InputConnection; 70import android.view.inputmethod.InputMethodManager; 71import android.view.Surface.OutOfResourcesException; 72import android.widget.Scroller; 73 74import com.android.internal.R; 75import com.android.internal.os.SomeArgs; 76import com.android.internal.policy.PolicyManager; 77import com.android.internal.view.BaseSurfaceHolder; 78import com.android.internal.view.RootViewSurfaceTaker; 79 80import java.io.IOException; 81import java.io.OutputStream; 82import java.lang.ref.WeakReference; 83import java.util.ArrayList; 84import java.util.HashSet; 85 86/** 87 * The top of a view hierarchy, implementing the needed protocol between View 88 * and the WindowManager. This is for the most part an internal implementation 89 * detail of {@link WindowManagerGlobal}. 90 * 91 * {@hide} 92 */ 93@SuppressWarnings({"EmptyCatchBlock", "PointlessBooleanExpression"}) 94public final class ViewRootImpl implements ViewParent, 95 View.AttachInfo.Callbacks, HardwareRenderer.HardwareDrawCallbacks { 96 private static final String TAG = "ViewRootImpl"; 97 private static final boolean DBG = false; 98 private static final boolean LOCAL_LOGV = false; 99 /** @noinspection PointlessBooleanExpression*/ 100 private static final boolean DEBUG_DRAW = false || LOCAL_LOGV; 101 private static final boolean DEBUG_LAYOUT = false || LOCAL_LOGV; 102 private static final boolean DEBUG_DIALOG = false || LOCAL_LOGV; 103 private static final boolean DEBUG_INPUT_RESIZE = false || LOCAL_LOGV; 104 private static final boolean DEBUG_ORIENTATION = false || LOCAL_LOGV; 105 private static final boolean DEBUG_TRACKBALL = false || LOCAL_LOGV; 106 private static final boolean DEBUG_IMF = false || LOCAL_LOGV; 107 private static final boolean DEBUG_CONFIGURATION = false || LOCAL_LOGV; 108 private static final boolean DEBUG_FPS = false; 109 private static final boolean DEBUG_INPUT_PROCESSING = false || LOCAL_LOGV; 110 111 /** 112 * Set this system property to true to force the view hierarchy to render 113 * at 60 Hz. This can be used to measure the potential framerate. 114 */ 115 private static final String PROPERTY_PROFILE_RENDERING = "viewroot.profile_rendering"; 116 private static final String PROPERTY_MEDIA_DISABLED = "config.disable_media"; 117 118 /** 119 * Maximum time we allow the user to roll the trackball enough to generate 120 * a key event, before resetting the counters. 121 */ 122 static final int MAX_TRACKBALL_DELAY = 250; 123 124 static final ThreadLocal<RunQueue> sRunQueues = new ThreadLocal<RunQueue>(); 125 126 static final ArrayList<Runnable> sFirstDrawHandlers = new ArrayList<Runnable>(); 127 static boolean sFirstDrawComplete = false; 128 129 static final ArrayList<ComponentCallbacks> sConfigCallbacks 130 = new ArrayList<ComponentCallbacks>(); 131 132 final Context mContext; 133 final IWindowSession mWindowSession; 134 final Display mDisplay; 135 final String mBasePackageName; 136 137 final int[] mTmpLocation = new int[2]; 138 139 final TypedValue mTmpValue = new TypedValue(); 140 141 final Thread mThread; 142 143 final WindowLeaked mLocation; 144 145 final WindowManager.LayoutParams mWindowAttributes = new WindowManager.LayoutParams(); 146 147 final W mWindow; 148 149 final int mTargetSdkVersion; 150 151 int mSeq; 152 153 View mView; 154 155 View mAccessibilityFocusedHost; 156 AccessibilityNodeInfo mAccessibilityFocusedVirtualView; 157 158 int mViewVisibility; 159 boolean mAppVisible = true; 160 int mOrigWindowType = -1; 161 162 // Set to true if the owner of this window is in the stopped state, 163 // so the window should no longer be active. 164 boolean mStopped = false; 165 166 boolean mLastInCompatMode = false; 167 168 SurfaceHolder.Callback2 mSurfaceHolderCallback; 169 BaseSurfaceHolder mSurfaceHolder; 170 boolean mIsCreating; 171 boolean mDrawingAllowed; 172 173 final Region mTransparentRegion; 174 final Region mPreviousTransparentRegion; 175 176 int mWidth; 177 int mHeight; 178 Rect mDirty; 179 final Rect mCurrentDirty = new Rect(); 180 boolean mIsAnimating; 181 182 CompatibilityInfo.Translator mTranslator; 183 184 final View.AttachInfo mAttachInfo; 185 InputChannel mInputChannel; 186 InputQueue.Callback mInputQueueCallback; 187 InputQueue mInputQueue; 188 FallbackEventHandler mFallbackEventHandler; 189 Choreographer mChoreographer; 190 191 final Rect mTempRect; // used in the transaction to not thrash the heap. 192 final Rect mVisRect; // used to retrieve visible rect of focused view. 193 194 boolean mTraversalScheduled; 195 int mTraversalBarrier; 196 boolean mWillDrawSoon; 197 /** Set to true while in performTraversals for detecting when die(true) is called from internal 198 * callbacks such as onMeasure, onPreDraw, onDraw and deferring doDie() until later. */ 199 boolean mIsInTraversal; 200 boolean mFitSystemWindowsRequested; 201 boolean mLayoutRequested; 202 boolean mFirst; 203 boolean mReportNextDraw; 204 boolean mFullRedrawNeeded; 205 boolean mNewSurfaceNeeded; 206 boolean mHasHadWindowFocus; 207 boolean mLastWasImTarget; 208 boolean mWindowsAnimating; 209 boolean mDrawDuringWindowsAnimating; 210 boolean mIsDrawing; 211 int mLastSystemUiVisibility; 212 int mClientWindowLayoutFlags; 213 boolean mLastOverscanRequested; 214 215 // Pool of queued input events. 216 private static final int MAX_QUEUED_INPUT_EVENT_POOL_SIZE = 10; 217 private QueuedInputEvent mQueuedInputEventPool; 218 private int mQueuedInputEventPoolSize; 219 220 /* Input event queue. 221 * Pending input events are input events waiting to be delivered to the input stages 222 * and handled by the application. 223 */ 224 QueuedInputEvent mPendingInputEventHead; 225 QueuedInputEvent mPendingInputEventTail; 226 int mPendingInputEventCount; 227 boolean mProcessInputEventsScheduled; 228 String mPendingInputEventQueueLengthCounterName = "pq"; 229 230 InputStage mFirstInputStage; 231 InputStage mFirstPostImeInputStage; 232 233 boolean mFlipControllerFallbackKeys; 234 235 boolean mWindowAttributesChanged = false; 236 int mWindowAttributesChangesFlag = 0; 237 238 // These can be accessed by any thread, must be protected with a lock. 239 // Surface can never be reassigned or cleared (use Surface.clear()). 240 private final Surface mSurface = new Surface(); 241 242 boolean mAdded; 243 boolean mAddedTouchMode; 244 245 final DisplayAdjustments mDisplayAdjustments; 246 247 // These are accessed by multiple threads. 248 final Rect mWinFrame; // frame given by window manager. 249 250 final Rect mPendingOverscanInsets = new Rect(); 251 final Rect mPendingVisibleInsets = new Rect(); 252 final Rect mPendingContentInsets = new Rect(); 253 final ViewTreeObserver.InternalInsetsInfo mLastGivenInsets 254 = new ViewTreeObserver.InternalInsetsInfo(); 255 256 final Rect mFitSystemWindowsInsets = new Rect(); 257 258 final Configuration mLastConfiguration = new Configuration(); 259 final Configuration mPendingConfiguration = new Configuration(); 260 261 boolean mScrollMayChange; 262 int mSoftInputMode; 263 WeakReference<View> mLastScrolledFocus; 264 int mScrollY; 265 int mCurScrollY; 266 Scroller mScroller; 267 HardwareLayer mResizeBuffer; 268 long mResizeBufferStartTime; 269 int mResizeBufferDuration; 270 static final Interpolator mResizeInterpolator = new AccelerateDecelerateInterpolator(); 271 private ArrayList<LayoutTransition> mPendingTransitions; 272 273 final ViewConfiguration mViewConfiguration; 274 275 /* Drag/drop */ 276 ClipDescription mDragDescription; 277 View mCurrentDragView; 278 volatile Object mLocalDragState; 279 final PointF mDragPoint = new PointF(); 280 final PointF mLastTouchPoint = new PointF(); 281 282 private boolean mProfileRendering; 283 private Choreographer.FrameCallback mRenderProfiler; 284 private boolean mRenderProfilingEnabled; 285 286 private boolean mMediaDisabled; 287 288 // Variables to track frames per second, enabled via DEBUG_FPS flag 289 private long mFpsStartTime = -1; 290 private long mFpsPrevTime = -1; 291 private int mFpsNumFrames; 292 293 private final ArrayList<DisplayList> mDisplayLists = new ArrayList<DisplayList>(); 294 295 /** 296 * see {@link #playSoundEffect(int)} 297 */ 298 AudioManager mAudioManager; 299 300 final AccessibilityManager mAccessibilityManager; 301 302 AccessibilityInteractionController mAccessibilityInteractionController; 303 304 AccessibilityInteractionConnectionManager mAccessibilityInteractionConnectionManager; 305 306 SendWindowContentChangedAccessibilityEvent mSendWindowContentChangedAccessibilityEvent; 307 308 HashSet<View> mTempHashSet; 309 310 private final int mDensity; 311 private final int mNoncompatDensity; 312 313 private boolean mInLayout = false; 314 ArrayList<View> mLayoutRequesters = new ArrayList<View>(); 315 boolean mHandlingLayoutInLayoutRequest = false; 316 317 private int mViewLayoutDirectionInitial; 318 319 /** Set to true once doDie() has been called. */ 320 private boolean mRemoved; 321 322 /** 323 * Consistency verifier for debugging purposes. 324 */ 325 protected final InputEventConsistencyVerifier mInputEventConsistencyVerifier = 326 InputEventConsistencyVerifier.isInstrumentationEnabled() ? 327 new InputEventConsistencyVerifier(this, 0) : null; 328 329 static final class SystemUiVisibilityInfo { 330 int seq; 331 int globalVisibility; 332 int localValue; 333 int localChanges; 334 } 335 336 public ViewRootImpl(Context context, Display display) { 337 mContext = context; 338 mWindowSession = WindowManagerGlobal.getWindowSession(); 339 mDisplay = display; 340 mBasePackageName = context.getBasePackageName(); 341 342 mDisplayAdjustments = display.getDisplayAdjustments(); 343 344 mThread = Thread.currentThread(); 345 mLocation = new WindowLeaked(null); 346 mLocation.fillInStackTrace(); 347 mWidth = -1; 348 mHeight = -1; 349 mDirty = new Rect(); 350 mTempRect = new Rect(); 351 mVisRect = new Rect(); 352 mWinFrame = new Rect(); 353 mWindow = new W(this); 354 mTargetSdkVersion = context.getApplicationInfo().targetSdkVersion; 355 mViewVisibility = View.GONE; 356 mTransparentRegion = new Region(); 357 mPreviousTransparentRegion = new Region(); 358 mFirst = true; // true for the first time the view is added 359 mAdded = false; 360 mAccessibilityManager = AccessibilityManager.getInstance(context); 361 mAccessibilityInteractionConnectionManager = 362 new AccessibilityInteractionConnectionManager(); 363 mAccessibilityManager.addAccessibilityStateChangeListener( 364 mAccessibilityInteractionConnectionManager); 365 mAttachInfo = new View.AttachInfo(mWindowSession, mWindow, display, this, mHandler, this); 366 mViewConfiguration = ViewConfiguration.get(context); 367 mDensity = context.getResources().getDisplayMetrics().densityDpi; 368 mNoncompatDensity = context.getResources().getDisplayMetrics().noncompatDensityDpi; 369 mFallbackEventHandler = PolicyManager.makeNewFallbackEventHandler(context); 370 mChoreographer = Choreographer.getInstance(); 371 mFlipControllerFallbackKeys = 372 context.getResources().getBoolean(R.bool.flip_controller_fallback_keys); 373 374 PowerManager powerManager = (PowerManager) context.getSystemService(Context.POWER_SERVICE); 375 mAttachInfo.mScreenOn = powerManager.isScreenOn(); 376 loadSystemProperties(); 377 } 378 379 public static void addFirstDrawHandler(Runnable callback) { 380 synchronized (sFirstDrawHandlers) { 381 if (!sFirstDrawComplete) { 382 sFirstDrawHandlers.add(callback); 383 } 384 } 385 } 386 387 public static void addConfigCallback(ComponentCallbacks callback) { 388 synchronized (sConfigCallbacks) { 389 sConfigCallbacks.add(callback); 390 } 391 } 392 393 // FIXME for perf testing only 394 private boolean mProfile = false; 395 396 /** 397 * Call this to profile the next traversal call. 398 * FIXME for perf testing only. Remove eventually 399 */ 400 public void profile() { 401 mProfile = true; 402 } 403 404 /** 405 * Indicates whether we are in touch mode. Calling this method triggers an IPC 406 * call and should be avoided whenever possible. 407 * 408 * @return True, if the device is in touch mode, false otherwise. 409 * 410 * @hide 411 */ 412 static boolean isInTouchMode() { 413 IWindowSession windowSession = WindowManagerGlobal.peekWindowSession(); 414 if (windowSession != null) { 415 try { 416 return windowSession.getInTouchMode(); 417 } catch (RemoteException e) { 418 } 419 } 420 return false; 421 } 422 423 /** 424 * We have one child 425 */ 426 public void setView(View view, WindowManager.LayoutParams attrs, View panelParentView) { 427 synchronized (this) { 428 if (mView == null) { 429 mView = view; 430 mViewLayoutDirectionInitial = mView.getRawLayoutDirection(); 431 mFallbackEventHandler.setView(view); 432 mWindowAttributes.copyFrom(attrs); 433 if (mWindowAttributes.packageName == null) { 434 mWindowAttributes.packageName = mBasePackageName; 435 } 436 attrs = mWindowAttributes; 437 // Keep track of the actual window flags supplied by the client. 438 mClientWindowLayoutFlags = attrs.flags; 439 440 setAccessibilityFocus(null, null); 441 442 if (view instanceof RootViewSurfaceTaker) { 443 mSurfaceHolderCallback = 444 ((RootViewSurfaceTaker)view).willYouTakeTheSurface(); 445 if (mSurfaceHolderCallback != null) { 446 mSurfaceHolder = new TakenSurfaceHolder(); 447 mSurfaceHolder.setFormat(PixelFormat.UNKNOWN); 448 } 449 } 450 451 CompatibilityInfo compatibilityInfo = mDisplayAdjustments.getCompatibilityInfo(); 452 mTranslator = compatibilityInfo.getTranslator(); 453 mDisplayAdjustments.setActivityToken(attrs.token); 454 455 // If the application owns the surface, don't enable hardware acceleration 456 if (mSurfaceHolder == null) { 457 enableHardwareAcceleration(attrs); 458 } 459 460 boolean restore = false; 461 if (mTranslator != null) { 462 mSurface.setCompatibilityTranslator(mTranslator); 463 restore = true; 464 attrs.backup(); 465 mTranslator.translateWindowLayout(attrs); 466 } 467 if (DEBUG_LAYOUT) Log.d(TAG, "WindowLayout in setView:" + attrs); 468 469 if (!compatibilityInfo.supportsScreen()) { 470 attrs.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 invalidateDisplayLists(); 622 if (mAttachInfo.mHardwareRenderer != null) { 623 mAttachInfo.mHardwareRenderer.destroyHardwareResources(mView); 624 mAttachInfo.mHardwareRenderer.destroy(false); 625 } 626 } 627 628 void destroyHardwareLayers() { 629 if (mThread != Thread.currentThread()) { 630 if (mAttachInfo.mHardwareRenderer != null && 631 mAttachInfo.mHardwareRenderer.isEnabled()) { 632 HardwareRenderer.trimMemory(ComponentCallbacks2.TRIM_MEMORY_MODERATE); 633 } 634 } else { 635 invalidateDisplayLists(); 636 if (mAttachInfo.mHardwareRenderer != null && 637 mAttachInfo.mHardwareRenderer.isEnabled()) { 638 mAttachInfo.mHardwareRenderer.destroyLayers(mView); 639 } 640 } 641 } 642 643 void pushHardwareLayerUpdate(HardwareLayer layer) { 644 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled()) { 645 mAttachInfo.mHardwareRenderer.pushLayerUpdate(layer); 646 } 647 } 648 649 void flushHardwareLayerUpdates() { 650 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled() && 651 mAttachInfo.mHardwareRenderer.validate()) { 652 mAttachInfo.mHardwareRenderer.flushLayerUpdates(); 653 } 654 } 655 656 void dispatchFlushHardwareLayerUpdates() { 657 mHandler.removeMessages(MSG_FLUSH_LAYER_UPDATES); 658 mHandler.sendMessageAtFrontOfQueue(mHandler.obtainMessage(MSG_FLUSH_LAYER_UPDATES)); 659 } 660 661 public boolean attachFunctor(int functor) { 662 //noinspection SimplifiableIfStatement 663 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled()) { 664 return mAttachInfo.mHardwareRenderer.attachFunctor(mAttachInfo, functor); 665 } 666 return false; 667 } 668 669 public void detachFunctor(int functor) { 670 if (mAttachInfo.mHardwareRenderer != null) { 671 mAttachInfo.mHardwareRenderer.detachFunctor(functor); 672 } 673 } 674 675 private void enableHardwareAcceleration(WindowManager.LayoutParams attrs) { 676 mAttachInfo.mHardwareAccelerated = false; 677 mAttachInfo.mHardwareAccelerationRequested = false; 678 679 // Don't enable hardware acceleration when the application is in compatibility mode 680 if (mTranslator != null) return; 681 682 // Try to enable hardware acceleration if requested 683 final boolean hardwareAccelerated = 684 (attrs.flags & WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED) != 0; 685 686 if (hardwareAccelerated) { 687 if (!HardwareRenderer.isAvailable()) { 688 return; 689 } 690 691 // Persistent processes (including the system) should not do 692 // accelerated rendering on low-end devices. In that case, 693 // sRendererDisabled will be set. In addition, the system process 694 // itself should never do accelerated rendering. In that case, both 695 // sRendererDisabled and sSystemRendererDisabled are set. When 696 // sSystemRendererDisabled is set, PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED 697 // can be used by code on the system process to escape that and enable 698 // HW accelerated drawing. (This is basically for the lock screen.) 699 700 final boolean fakeHwAccelerated = (attrs.privateFlags & 701 WindowManager.LayoutParams.PRIVATE_FLAG_FAKE_HARDWARE_ACCELERATED) != 0; 702 final boolean forceHwAccelerated = (attrs.privateFlags & 703 WindowManager.LayoutParams.PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED) != 0; 704 705 if (!HardwareRenderer.sRendererDisabled || (HardwareRenderer.sSystemRendererDisabled 706 && forceHwAccelerated)) { 707 // Don't enable hardware acceleration when we're not on the main thread 708 if (!HardwareRenderer.sSystemRendererDisabled && 709 Looper.getMainLooper() != Looper.myLooper()) { 710 Log.w(HardwareRenderer.LOG_TAG, "Attempting to initialize hardware " 711 + "acceleration outside of the main thread, aborting"); 712 return; 713 } 714 715 if (mAttachInfo.mHardwareRenderer != null) { 716 mAttachInfo.mHardwareRenderer.destroy(true); 717 } 718 719 final boolean translucent = attrs.format != PixelFormat.OPAQUE; 720 mAttachInfo.mHardwareRenderer = HardwareRenderer.createGlRenderer(2, translucent); 721 if (mAttachInfo.mHardwareRenderer != null) { 722 mAttachInfo.mHardwareRenderer.setName(attrs.getTitle().toString()); 723 mAttachInfo.mHardwareAccelerated = 724 mAttachInfo.mHardwareAccelerationRequested = true; 725 } 726 } else if (fakeHwAccelerated) { 727 // The window had wanted to use hardware acceleration, but this 728 // is not allowed in its process. By setting this flag, it can 729 // still render as if it was accelerated. This is basically for 730 // the preview windows the window manager shows for launching 731 // applications, so they will look more like the app being launched. 732 mAttachInfo.mHardwareAccelerationRequested = true; 733 } 734 } 735 } 736 737 public View getView() { 738 return mView; 739 } 740 741 final WindowLeaked getLocation() { 742 return mLocation; 743 } 744 745 void setLayoutParams(WindowManager.LayoutParams attrs, boolean newView) { 746 synchronized (this) { 747 int oldSoftInputMode = mWindowAttributes.softInputMode; 748 // Keep track of the actual window flags supplied by the client. 749 mClientWindowLayoutFlags = attrs.flags; 750 // preserve compatible window flag if exists. 751 int compatibleWindowFlag = mWindowAttributes.privateFlags 752 & WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 753 // transfer over system UI visibility values as they carry current state. 754 attrs.systemUiVisibility = mWindowAttributes.systemUiVisibility; 755 attrs.subtreeSystemUiVisibility = mWindowAttributes.subtreeSystemUiVisibility; 756 mWindowAttributesChangesFlag = mWindowAttributes.copyFrom(attrs); 757 if ((mWindowAttributesChangesFlag 758 & WindowManager.LayoutParams.TRANSLUCENT_FLAGS_CHANGED) != 0) { 759 // Recompute system ui visibility. 760 mAttachInfo.mRecomputeGlobalAttributes = true; 761 } 762 if (mWindowAttributes.packageName == null) { 763 mWindowAttributes.packageName = mBasePackageName; 764 } 765 mWindowAttributes.privateFlags |= compatibleWindowFlag; 766 767 applyKeepScreenOnFlag(mWindowAttributes); 768 769 if (newView) { 770 mSoftInputMode = attrs.softInputMode; 771 requestLayout(); 772 } 773 // Don't lose the mode we last auto-computed. 774 if ((attrs.softInputMode&WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 775 == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 776 mWindowAttributes.softInputMode = (mWindowAttributes.softInputMode 777 & ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 778 | (oldSoftInputMode 779 & WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST); 780 } 781 mWindowAttributesChanged = true; 782 scheduleTraversals(); 783 } 784 } 785 786 void handleAppVisibility(boolean visible) { 787 if (mAppVisible != visible) { 788 mAppVisible = visible; 789 scheduleTraversals(); 790 } 791 } 792 793 void handleGetNewSurface() { 794 mNewSurfaceNeeded = true; 795 mFullRedrawNeeded = true; 796 scheduleTraversals(); 797 } 798 799 void handleScreenStateChange(boolean on) { 800 if (on != mAttachInfo.mScreenOn) { 801 mAttachInfo.mScreenOn = on; 802 if (mView != null) { 803 mView.dispatchScreenStateChanged(on ? View.SCREEN_STATE_ON : View.SCREEN_STATE_OFF); 804 } 805 if (on) { 806 mFullRedrawNeeded = true; 807 scheduleTraversals(); 808 } 809 } 810 } 811 812 @Override 813 public void requestFitSystemWindows() { 814 checkThread(); 815 mFitSystemWindowsRequested = true; 816 scheduleTraversals(); 817 } 818 819 @Override 820 public void requestLayout() { 821 if (!mHandlingLayoutInLayoutRequest) { 822 checkThread(); 823 mLayoutRequested = true; 824 scheduleTraversals(); 825 } 826 } 827 828 @Override 829 public boolean isLayoutRequested() { 830 return mLayoutRequested; 831 } 832 833 void invalidate() { 834 mDirty.set(0, 0, mWidth, mHeight); 835 scheduleTraversals(); 836 } 837 838 void invalidateWorld(View view) { 839 view.invalidate(); 840 if (view instanceof ViewGroup) { 841 ViewGroup parent = (ViewGroup) view; 842 for (int i = 0; i < parent.getChildCount(); i++) { 843 invalidateWorld(parent.getChildAt(i)); 844 } 845 } 846 } 847 848 @Override 849 public void invalidateChild(View child, Rect dirty) { 850 invalidateChildInParent(null, dirty); 851 } 852 853 @Override 854 public ViewParent invalidateChildInParent(int[] location, Rect dirty) { 855 checkThread(); 856 if (DEBUG_DRAW) Log.v(TAG, "Invalidate child: " + dirty); 857 858 if (dirty == null) { 859 invalidate(); 860 return null; 861 } else if (dirty.isEmpty() && !mIsAnimating) { 862 return null; 863 } 864 865 if (mCurScrollY != 0 || mTranslator != null) { 866 mTempRect.set(dirty); 867 dirty = mTempRect; 868 if (mCurScrollY != 0) { 869 dirty.offset(0, -mCurScrollY); 870 } 871 if (mTranslator != null) { 872 mTranslator.translateRectInAppWindowToScreen(dirty); 873 } 874 if (mAttachInfo.mScalingRequired) { 875 dirty.inset(-1, -1); 876 } 877 } 878 879 final Rect localDirty = mDirty; 880 if (!localDirty.isEmpty() && !localDirty.contains(dirty)) { 881 mAttachInfo.mSetIgnoreDirtyState = true; 882 mAttachInfo.mIgnoreDirtyState = true; 883 } 884 885 // Add the new dirty rect to the current one 886 localDirty.union(dirty.left, dirty.top, dirty.right, dirty.bottom); 887 // Intersect with the bounds of the window to skip 888 // updates that lie outside of the visible region 889 final float appScale = mAttachInfo.mApplicationScale; 890 final boolean intersected = localDirty.intersect(0, 0, 891 (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 892 if (!intersected) { 893 localDirty.setEmpty(); 894 } 895 if (!mWillDrawSoon && (intersected || mIsAnimating)) { 896 scheduleTraversals(); 897 } 898 899 return null; 900 } 901 902 void setStopped(boolean stopped) { 903 if (mStopped != stopped) { 904 mStopped = stopped; 905 if (!stopped) { 906 scheduleTraversals(); 907 } 908 } 909 } 910 911 @Override 912 public ViewParent getParent() { 913 return null; 914 } 915 916 @Override 917 public boolean getChildVisibleRect(View child, Rect r, android.graphics.Point offset) { 918 if (child != mView) { 919 throw new RuntimeException("child is not mine, honest!"); 920 } 921 // Note: don't apply scroll offset, because we want to know its 922 // visibility in the virtual canvas being given to the view hierarchy. 923 return r.intersect(0, 0, mWidth, mHeight); 924 } 925 926 @Override 927 public void bringChildToFront(View child) { 928 } 929 930 int getHostVisibility() { 931 return mAppVisible ? mView.getVisibility() : View.GONE; 932 } 933 934 void disposeResizeBuffer() { 935 if (mResizeBuffer != null && mAttachInfo.mHardwareRenderer != null) { 936 mAttachInfo.mHardwareRenderer.safelyRun(new Runnable() { 937 @Override 938 public void run() { 939 mResizeBuffer.destroy(); 940 mResizeBuffer = null; 941 } 942 }); 943 } 944 } 945 946 /** 947 * Add LayoutTransition to the list of transitions to be started in the next traversal. 948 * This list will be cleared after the transitions on the list are start()'ed. These 949 * transitionsa re added by LayoutTransition itself when it sets up animations. The setup 950 * happens during the layout phase of traversal, which we want to complete before any of the 951 * animations are started (because those animations may side-effect properties that layout 952 * depends upon, like the bounding rectangles of the affected views). So we add the transition 953 * to the list and it is started just prior to starting the drawing phase of traversal. 954 * 955 * @param transition The LayoutTransition to be started on the next traversal. 956 * 957 * @hide 958 */ 959 public void requestTransitionStart(LayoutTransition transition) { 960 if (mPendingTransitions == null || !mPendingTransitions.contains(transition)) { 961 if (mPendingTransitions == null) { 962 mPendingTransitions = new ArrayList<LayoutTransition>(); 963 } 964 mPendingTransitions.add(transition); 965 } 966 } 967 968 void scheduleTraversals() { 969 if (!mTraversalScheduled) { 970 mTraversalScheduled = true; 971 mTraversalBarrier = mHandler.getLooper().postSyncBarrier(); 972 mChoreographer.postCallback( 973 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 974 scheduleConsumeBatchedInput(); 975 } 976 } 977 978 void unscheduleTraversals() { 979 if (mTraversalScheduled) { 980 mTraversalScheduled = false; 981 mHandler.getLooper().removeSyncBarrier(mTraversalBarrier); 982 mChoreographer.removeCallbacks( 983 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 984 } 985 } 986 987 void doTraversal() { 988 if (mTraversalScheduled) { 989 mTraversalScheduled = false; 990 mHandler.getLooper().removeSyncBarrier(mTraversalBarrier); 991 992 if (mProfile) { 993 Debug.startMethodTracing("ViewAncestor"); 994 } 995 996 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "performTraversals"); 997 try { 998 performTraversals(); 999 } finally { 1000 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 1001 } 1002 1003 if (mProfile) { 1004 Debug.stopMethodTracing(); 1005 mProfile = false; 1006 } 1007 } 1008 } 1009 1010 private void applyKeepScreenOnFlag(WindowManager.LayoutParams params) { 1011 // Update window's global keep screen on flag: if a view has requested 1012 // that the screen be kept on, then it is always set; otherwise, it is 1013 // set to whatever the client last requested for the global state. 1014 if (mAttachInfo.mKeepScreenOn) { 1015 params.flags |= WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON; 1016 } else { 1017 params.flags = (params.flags&~WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON) 1018 | (mClientWindowLayoutFlags&WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 1019 } 1020 } 1021 1022 private boolean collectViewAttributes() { 1023 final View.AttachInfo attachInfo = mAttachInfo; 1024 if (attachInfo.mRecomputeGlobalAttributes) { 1025 //Log.i(TAG, "Computing view hierarchy attributes!"); 1026 attachInfo.mRecomputeGlobalAttributes = false; 1027 boolean oldScreenOn = attachInfo.mKeepScreenOn; 1028 attachInfo.mKeepScreenOn = false; 1029 attachInfo.mSystemUiVisibility = 0; 1030 attachInfo.mHasSystemUiListeners = false; 1031 mView.dispatchCollectViewAttributes(attachInfo, 0); 1032 attachInfo.mSystemUiVisibility &= ~attachInfo.mDisabledSystemUiVisibility; 1033 WindowManager.LayoutParams params = mWindowAttributes; 1034 attachInfo.mSystemUiVisibility |= getImpliedSystemUiVisibility(params); 1035 if (attachInfo.mKeepScreenOn != oldScreenOn 1036 || attachInfo.mSystemUiVisibility != params.subtreeSystemUiVisibility 1037 || attachInfo.mHasSystemUiListeners != params.hasSystemUiListeners) { 1038 applyKeepScreenOnFlag(params); 1039 params.subtreeSystemUiVisibility = attachInfo.mSystemUiVisibility; 1040 params.hasSystemUiListeners = attachInfo.mHasSystemUiListeners; 1041 mView.dispatchWindowSystemUiVisiblityChanged(attachInfo.mSystemUiVisibility); 1042 return true; 1043 } 1044 } 1045 return false; 1046 } 1047 1048 private int getImpliedSystemUiVisibility(WindowManager.LayoutParams params) { 1049 int vis = 0; 1050 // Translucent decor window flags imply stable system ui visibility. 1051 if ((params.flags & WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS) != 0) { 1052 vis |= View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN; 1053 } 1054 if ((params.flags & WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION) != 0) { 1055 vis |= View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION; 1056 } 1057 return vis; 1058 } 1059 1060 private boolean measureHierarchy(final View host, final WindowManager.LayoutParams lp, 1061 final Resources res, final int desiredWindowWidth, final int desiredWindowHeight) { 1062 int childWidthMeasureSpec; 1063 int childHeightMeasureSpec; 1064 boolean windowSizeMayChange = false; 1065 1066 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) Log.v(TAG, 1067 "Measuring " + host + " in display " + desiredWindowWidth 1068 + "x" + desiredWindowHeight + "..."); 1069 1070 boolean goodMeasure = false; 1071 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT) { 1072 // On large screens, we don't want to allow dialogs to just 1073 // stretch to fill the entire width of the screen to display 1074 // one line of text. First try doing the layout at a smaller 1075 // size to see if it will fit. 1076 final DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1077 res.getValue(com.android.internal.R.dimen.config_prefDialogWidth, mTmpValue, true); 1078 int baseSize = 0; 1079 if (mTmpValue.type == TypedValue.TYPE_DIMENSION) { 1080 baseSize = (int)mTmpValue.getDimension(packageMetrics); 1081 } 1082 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": baseSize=" + baseSize); 1083 if (baseSize != 0 && desiredWindowWidth > baseSize) { 1084 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1085 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1086 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1087 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": measured (" 1088 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1089 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1090 goodMeasure = true; 1091 } else { 1092 // Didn't fit in that size... try expanding a bit. 1093 baseSize = (baseSize+desiredWindowWidth)/2; 1094 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": next baseSize=" 1095 + baseSize); 1096 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1097 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1098 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": measured (" 1099 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1100 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1101 if (DEBUG_DIALOG) Log.v(TAG, "Good!"); 1102 goodMeasure = true; 1103 } 1104 } 1105 } 1106 } 1107 1108 if (!goodMeasure) { 1109 childWidthMeasureSpec = getRootMeasureSpec(desiredWindowWidth, lp.width); 1110 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1111 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1112 if (mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) { 1113 windowSizeMayChange = true; 1114 } 1115 } 1116 1117 if (DBG) { 1118 System.out.println("======================================"); 1119 System.out.println("performTraversals -- after measure"); 1120 host.debug(); 1121 } 1122 1123 return windowSizeMayChange; 1124 } 1125 1126 private void performTraversals() { 1127 // cache mView since it is used so much below... 1128 final View host = mView; 1129 1130 if (DBG) { 1131 System.out.println("======================================"); 1132 System.out.println("performTraversals"); 1133 host.debug(); 1134 } 1135 1136 if (host == null || !mAdded) 1137 return; 1138 1139 mIsInTraversal = true; 1140 mWillDrawSoon = true; 1141 boolean windowSizeMayChange = false; 1142 boolean newSurface = false; 1143 boolean surfaceChanged = false; 1144 WindowManager.LayoutParams lp = mWindowAttributes; 1145 1146 int desiredWindowWidth; 1147 int desiredWindowHeight; 1148 1149 final View.AttachInfo attachInfo = mAttachInfo; 1150 1151 final int viewVisibility = getHostVisibility(); 1152 boolean viewVisibilityChanged = mViewVisibility != viewVisibility 1153 || mNewSurfaceNeeded; 1154 1155 WindowManager.LayoutParams params = null; 1156 if (mWindowAttributesChanged) { 1157 mWindowAttributesChanged = false; 1158 surfaceChanged = true; 1159 params = lp; 1160 } 1161 CompatibilityInfo compatibilityInfo = mDisplayAdjustments.getCompatibilityInfo(); 1162 if (compatibilityInfo.supportsScreen() == mLastInCompatMode) { 1163 params = lp; 1164 mFullRedrawNeeded = true; 1165 mLayoutRequested = true; 1166 if (mLastInCompatMode) { 1167 params.privateFlags &= ~WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 1168 mLastInCompatMode = false; 1169 } else { 1170 params.privateFlags |= WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW; 1171 mLastInCompatMode = true; 1172 } 1173 } 1174 1175 mWindowAttributesChangesFlag = 0; 1176 1177 Rect frame = mWinFrame; 1178 if (mFirst) { 1179 mFullRedrawNeeded = true; 1180 mLayoutRequested = true; 1181 1182 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL) { 1183 // NOTE -- system code, won't try to do compat mode. 1184 Point size = new Point(); 1185 mDisplay.getRealSize(size); 1186 desiredWindowWidth = size.x; 1187 desiredWindowHeight = size.y; 1188 } else { 1189 DisplayMetrics packageMetrics = 1190 mView.getContext().getResources().getDisplayMetrics(); 1191 desiredWindowWidth = packageMetrics.widthPixels; 1192 desiredWindowHeight = packageMetrics.heightPixels; 1193 } 1194 1195 // For the very first time, tell the view hierarchy that it 1196 // is attached to the window. Note that at this point the surface 1197 // object is not initialized to its backing store, but soon it 1198 // will be (assuming the window is visible). 1199 attachInfo.mSurface = mSurface; 1200 // We used to use the following condition to choose 32 bits drawing caches: 1201 // PixelFormat.hasAlpha(lp.format) || lp.format == PixelFormat.RGBX_8888 1202 // However, windows are now always 32 bits by default, so choose 32 bits 1203 attachInfo.mUse32BitDrawingCache = true; 1204 attachInfo.mHasWindowFocus = false; 1205 attachInfo.mWindowVisibility = viewVisibility; 1206 attachInfo.mRecomputeGlobalAttributes = false; 1207 viewVisibilityChanged = false; 1208 mLastConfiguration.setTo(host.getResources().getConfiguration()); 1209 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1210 // Set the layout direction if it has not been set before (inherit is the default) 1211 if (mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 1212 host.setLayoutDirection(mLastConfiguration.getLayoutDirection()); 1213 } 1214 host.dispatchAttachedToWindow(attachInfo, 0); 1215 attachInfo.mTreeObserver.dispatchOnWindowAttachedChange(true); 1216 mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets); 1217 host.fitSystemWindows(mFitSystemWindowsInsets); 1218 //Log.i(TAG, "Screen on initialized: " + attachInfo.mKeepScreenOn); 1219 1220 } else { 1221 desiredWindowWidth = frame.width(); 1222 desiredWindowHeight = frame.height(); 1223 if (desiredWindowWidth != mWidth || desiredWindowHeight != mHeight) { 1224 if (DEBUG_ORIENTATION) Log.v(TAG, 1225 "View " + host + " resized to: " + frame); 1226 mFullRedrawNeeded = true; 1227 mLayoutRequested = true; 1228 windowSizeMayChange = true; 1229 } 1230 } 1231 1232 if (viewVisibilityChanged) { 1233 attachInfo.mWindowVisibility = viewVisibility; 1234 host.dispatchWindowVisibilityChanged(viewVisibility); 1235 if (viewVisibility != View.VISIBLE || mNewSurfaceNeeded) { 1236 destroyHardwareResources(); 1237 } 1238 if (viewVisibility == View.GONE) { 1239 // After making a window gone, we will count it as being 1240 // shown for the first time the next time it gets focus. 1241 mHasHadWindowFocus = false; 1242 } 1243 } 1244 1245 // Execute enqueued actions on every traversal in case a detached view enqueued an action 1246 getRunQueue().executeActions(attachInfo.mHandler); 1247 1248 boolean insetsChanged = false; 1249 1250 boolean layoutRequested = mLayoutRequested && !mStopped; 1251 if (layoutRequested) { 1252 1253 final Resources res = mView.getContext().getResources(); 1254 1255 if (mFirst) { 1256 // make sure touch mode code executes by setting cached value 1257 // to opposite of the added touch mode. 1258 mAttachInfo.mInTouchMode = !mAddedTouchMode; 1259 ensureTouchModeLocally(mAddedTouchMode); 1260 } else { 1261 if (!mPendingOverscanInsets.equals(mAttachInfo.mOverscanInsets)) { 1262 insetsChanged = true; 1263 } 1264 if (!mPendingContentInsets.equals(mAttachInfo.mContentInsets)) { 1265 insetsChanged = true; 1266 } 1267 if (!mPendingVisibleInsets.equals(mAttachInfo.mVisibleInsets)) { 1268 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1269 if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: " 1270 + mAttachInfo.mVisibleInsets); 1271 } 1272 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT 1273 || lp.height == ViewGroup.LayoutParams.WRAP_CONTENT) { 1274 windowSizeMayChange = true; 1275 1276 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL) { 1277 // NOTE -- system code, won't try to do compat mode. 1278 Point size = new Point(); 1279 mDisplay.getRealSize(size); 1280 desiredWindowWidth = size.x; 1281 desiredWindowHeight = size.y; 1282 } else { 1283 DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1284 desiredWindowWidth = packageMetrics.widthPixels; 1285 desiredWindowHeight = packageMetrics.heightPixels; 1286 } 1287 } 1288 } 1289 1290 // Ask host how big it wants to be 1291 windowSizeMayChange |= measureHierarchy(host, lp, res, 1292 desiredWindowWidth, desiredWindowHeight); 1293 } 1294 1295 if (collectViewAttributes()) { 1296 params = lp; 1297 } 1298 if (attachInfo.mForceReportNewAttributes) { 1299 attachInfo.mForceReportNewAttributes = false; 1300 params = lp; 1301 } 1302 1303 if (mFirst || attachInfo.mViewVisibilityChanged) { 1304 attachInfo.mViewVisibilityChanged = false; 1305 int resizeMode = mSoftInputMode & 1306 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST; 1307 // If we are in auto resize mode, then we need to determine 1308 // what mode to use now. 1309 if (resizeMode == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 1310 final int N = attachInfo.mScrollContainers.size(); 1311 for (int i=0; i<N; i++) { 1312 if (attachInfo.mScrollContainers.get(i).isShown()) { 1313 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE; 1314 } 1315 } 1316 if (resizeMode == 0) { 1317 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_PAN; 1318 } 1319 if ((lp.softInputMode & 1320 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) != resizeMode) { 1321 lp.softInputMode = (lp.softInputMode & 1322 ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) | 1323 resizeMode; 1324 params = lp; 1325 } 1326 } 1327 } 1328 1329 if (params != null) { 1330 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 1331 if (!PixelFormat.formatHasAlpha(params.format)) { 1332 params.format = PixelFormat.TRANSLUCENT; 1333 } 1334 } 1335 mAttachInfo.mOverscanRequested = (params.flags 1336 & WindowManager.LayoutParams.FLAG_LAYOUT_IN_OVERSCAN) != 0; 1337 } 1338 1339 if (mFitSystemWindowsRequested) { 1340 mFitSystemWindowsRequested = false; 1341 mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets); 1342 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1343 host.fitSystemWindows(mFitSystemWindowsInsets); 1344 if (mLayoutRequested) { 1345 // Short-circuit catching a new layout request here, so 1346 // we don't need to go through two layout passes when things 1347 // change due to fitting system windows, which can happen a lot. 1348 windowSizeMayChange |= measureHierarchy(host, lp, 1349 mView.getContext().getResources(), 1350 desiredWindowWidth, desiredWindowHeight); 1351 } 1352 } 1353 1354 if (layoutRequested) { 1355 // Clear this now, so that if anything requests a layout in the 1356 // rest of this function we will catch it and re-run a full 1357 // layout pass. 1358 mLayoutRequested = false; 1359 } 1360 1361 boolean windowShouldResize = layoutRequested && windowSizeMayChange 1362 && ((mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) 1363 || (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT && 1364 frame.width() < desiredWindowWidth && frame.width() != mWidth) 1365 || (lp.height == ViewGroup.LayoutParams.WRAP_CONTENT && 1366 frame.height() < desiredWindowHeight && frame.height() != mHeight)); 1367 1368 // Determine whether to compute insets. 1369 // If there are no inset listeners remaining then we may still need to compute 1370 // insets in case the old insets were non-empty and must be reset. 1371 final boolean computesInternalInsets = 1372 attachInfo.mTreeObserver.hasComputeInternalInsetsListeners() 1373 || attachInfo.mHasNonEmptyGivenInternalInsets; 1374 1375 boolean insetsPending = false; 1376 int relayoutResult = 0; 1377 1378 if (mFirst || windowShouldResize || insetsChanged || 1379 viewVisibilityChanged || params != null) { 1380 1381 if (viewVisibility == View.VISIBLE) { 1382 // If this window is giving internal insets to the window 1383 // manager, and it is being added or changing its visibility, 1384 // then we want to first give the window manager "fake" 1385 // insets to cause it to effectively ignore the content of 1386 // the window during layout. This avoids it briefly causing 1387 // other windows to resize/move based on the raw frame of the 1388 // window, waiting until we can finish laying out this window 1389 // and get back to the window manager with the ultimately 1390 // computed insets. 1391 insetsPending = computesInternalInsets && (mFirst || viewVisibilityChanged); 1392 } 1393 1394 if (mSurfaceHolder != null) { 1395 mSurfaceHolder.mSurfaceLock.lock(); 1396 mDrawingAllowed = true; 1397 } 1398 1399 boolean hwInitialized = false; 1400 boolean contentInsetsChanged = false; 1401 boolean hadSurface = mSurface.isValid(); 1402 1403 try { 1404 if (DEBUG_LAYOUT) { 1405 Log.i(TAG, "host=w:" + host.getMeasuredWidth() + ", h:" + 1406 host.getMeasuredHeight() + ", params=" + params); 1407 } 1408 1409 final int surfaceGenerationId = mSurface.getGenerationId(); 1410 relayoutResult = relayoutWindow(params, viewVisibility, insetsPending); 1411 if (!mDrawDuringWindowsAnimating) { 1412 mWindowsAnimating |= 1413 (relayoutResult & WindowManagerGlobal.RELAYOUT_RES_ANIMATING) != 0; 1414 } 1415 1416 if (DEBUG_LAYOUT) Log.v(TAG, "relayout: frame=" + frame.toShortString() 1417 + " overscan=" + mPendingOverscanInsets.toShortString() 1418 + " content=" + mPendingContentInsets.toShortString() 1419 + " visible=" + mPendingVisibleInsets.toShortString() 1420 + " surface=" + mSurface); 1421 1422 if (mPendingConfiguration.seq != 0) { 1423 if (DEBUG_CONFIGURATION) Log.v(TAG, "Visible with new config: " 1424 + mPendingConfiguration); 1425 updateConfiguration(mPendingConfiguration, !mFirst); 1426 mPendingConfiguration.seq = 0; 1427 } 1428 1429 final boolean overscanInsetsChanged = !mPendingOverscanInsets.equals( 1430 mAttachInfo.mOverscanInsets); 1431 contentInsetsChanged = !mPendingContentInsets.equals( 1432 mAttachInfo.mContentInsets); 1433 final boolean visibleInsetsChanged = !mPendingVisibleInsets.equals( 1434 mAttachInfo.mVisibleInsets); 1435 if (contentInsetsChanged) { 1436 if (mWidth > 0 && mHeight > 0 && lp != null && 1437 ((lp.systemUiVisibility|lp.subtreeSystemUiVisibility) 1438 & View.SYSTEM_UI_LAYOUT_FLAGS) == 0 && 1439 mSurface != null && mSurface.isValid() && 1440 !mAttachInfo.mTurnOffWindowResizeAnim && 1441 mAttachInfo.mHardwareRenderer != null && 1442 mAttachInfo.mHardwareRenderer.isEnabled() && 1443 mAttachInfo.mHardwareRenderer.validate() && 1444 lp != null && !PixelFormat.formatHasAlpha(lp.format)) { 1445 1446 disposeResizeBuffer(); 1447 1448 boolean completed = false; 1449 HardwareCanvas hwRendererCanvas = mAttachInfo.mHardwareRenderer.getCanvas(); 1450 HardwareCanvas layerCanvas = null; 1451 try { 1452 if (mResizeBuffer == null) { 1453 mResizeBuffer = mAttachInfo.mHardwareRenderer.createHardwareLayer( 1454 mWidth, mHeight, false); 1455 } else if (mResizeBuffer.getWidth() != mWidth || 1456 mResizeBuffer.getHeight() != mHeight) { 1457 mResizeBuffer.resize(mWidth, mHeight); 1458 } 1459 // TODO: should handle create/resize failure 1460 layerCanvas = mResizeBuffer.start(hwRendererCanvas); 1461 final int restoreCount = layerCanvas.save(); 1462 1463 int yoff; 1464 final boolean scrolling = mScroller != null 1465 && mScroller.computeScrollOffset(); 1466 if (scrolling) { 1467 yoff = mScroller.getCurrY(); 1468 mScroller.abortAnimation(); 1469 } else { 1470 yoff = mScrollY; 1471 } 1472 1473 layerCanvas.translate(0, -yoff); 1474 if (mTranslator != null) { 1475 mTranslator.translateCanvas(layerCanvas); 1476 } 1477 1478 DisplayList displayList = mView.mDisplayList; 1479 if (displayList != null && displayList.isValid()) { 1480 layerCanvas.drawDisplayList(displayList, null, 1481 DisplayList.FLAG_CLIP_CHILDREN); 1482 } else { 1483 mView.draw(layerCanvas); 1484 } 1485 1486 drawAccessibilityFocusedDrawableIfNeeded(layerCanvas); 1487 1488 mResizeBufferStartTime = SystemClock.uptimeMillis(); 1489 mResizeBufferDuration = mView.getResources().getInteger( 1490 com.android.internal.R.integer.config_mediumAnimTime); 1491 completed = true; 1492 1493 layerCanvas.restoreToCount(restoreCount); 1494 } catch (OutOfMemoryError e) { 1495 Log.w(TAG, "Not enough memory for content change anim buffer", e); 1496 } finally { 1497 if (mResizeBuffer != null) { 1498 mResizeBuffer.end(hwRendererCanvas); 1499 if (!completed) { 1500 disposeResizeBuffer(); 1501 } 1502 } 1503 } 1504 } 1505 mAttachInfo.mContentInsets.set(mPendingContentInsets); 1506 if (DEBUG_LAYOUT) Log.v(TAG, "Content insets changing to: " 1507 + mAttachInfo.mContentInsets); 1508 } 1509 if (overscanInsetsChanged) { 1510 mAttachInfo.mOverscanInsets.set(mPendingOverscanInsets); 1511 if (DEBUG_LAYOUT) Log.v(TAG, "Overscan insets changing to: " 1512 + mAttachInfo.mOverscanInsets); 1513 // Need to relayout with content insets. 1514 contentInsetsChanged = true; 1515 } 1516 if (contentInsetsChanged || mLastSystemUiVisibility != 1517 mAttachInfo.mSystemUiVisibility || mFitSystemWindowsRequested 1518 || mLastOverscanRequested != mAttachInfo.mOverscanRequested) { 1519 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1520 mLastOverscanRequested = mAttachInfo.mOverscanRequested; 1521 mFitSystemWindowsRequested = false; 1522 mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets); 1523 host.fitSystemWindows(mFitSystemWindowsInsets); 1524 } 1525 if (visibleInsetsChanged) { 1526 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1527 if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: " 1528 + mAttachInfo.mVisibleInsets); 1529 } 1530 1531 if (!hadSurface) { 1532 if (mSurface.isValid()) { 1533 // If we are creating a new surface, then we need to 1534 // completely redraw it. Also, when we get to the 1535 // point of drawing it we will hold off and schedule 1536 // a new traversal instead. This is so we can tell the 1537 // window manager about all of the windows being displayed 1538 // before actually drawing them, so it can display then 1539 // all at once. 1540 newSurface = true; 1541 mFullRedrawNeeded = true; 1542 mPreviousTransparentRegion.setEmpty(); 1543 1544 if (mAttachInfo.mHardwareRenderer != null) { 1545 try { 1546 hwInitialized = mAttachInfo.mHardwareRenderer.initialize( 1547 mHolder.getSurface()); 1548 } catch (OutOfResourcesException e) { 1549 handleOutOfResourcesException(e); 1550 return; 1551 } 1552 } 1553 } 1554 } else if (!mSurface.isValid()) { 1555 // If the surface has been removed, then reset the scroll 1556 // positions. 1557 if (mLastScrolledFocus != null) { 1558 mLastScrolledFocus.clear(); 1559 } 1560 mScrollY = mCurScrollY = 0; 1561 if (mScroller != null) { 1562 mScroller.abortAnimation(); 1563 } 1564 disposeResizeBuffer(); 1565 // Our surface is gone 1566 if (mAttachInfo.mHardwareRenderer != null && 1567 mAttachInfo.mHardwareRenderer.isEnabled()) { 1568 mAttachInfo.mHardwareRenderer.destroy(true); 1569 } 1570 } else if (surfaceGenerationId != mSurface.getGenerationId() && 1571 mSurfaceHolder == null && mAttachInfo.mHardwareRenderer != null) { 1572 mFullRedrawNeeded = true; 1573 try { 1574 mAttachInfo.mHardwareRenderer.updateSurface(mHolder.getSurface()); 1575 } catch (OutOfResourcesException e) { 1576 handleOutOfResourcesException(e); 1577 return; 1578 } 1579 } 1580 } catch (RemoteException e) { 1581 } 1582 1583 if (DEBUG_ORIENTATION) Log.v( 1584 TAG, "Relayout returned: frame=" + frame + ", surface=" + mSurface); 1585 1586 attachInfo.mWindowLeft = frame.left; 1587 attachInfo.mWindowTop = frame.top; 1588 1589 // !!FIXME!! This next section handles the case where we did not get the 1590 // window size we asked for. We should avoid this by getting a maximum size from 1591 // the window session beforehand. 1592 if (mWidth != frame.width() || mHeight != frame.height()) { 1593 mWidth = frame.width(); 1594 mHeight = frame.height(); 1595 } 1596 1597 if (mSurfaceHolder != null) { 1598 // The app owns the surface; tell it about what is going on. 1599 if (mSurface.isValid()) { 1600 // XXX .copyFrom() doesn't work! 1601 //mSurfaceHolder.mSurface.copyFrom(mSurface); 1602 mSurfaceHolder.mSurface = mSurface; 1603 } 1604 mSurfaceHolder.setSurfaceFrameSize(mWidth, mHeight); 1605 mSurfaceHolder.mSurfaceLock.unlock(); 1606 if (mSurface.isValid()) { 1607 if (!hadSurface) { 1608 mSurfaceHolder.ungetCallbacks(); 1609 1610 mIsCreating = true; 1611 mSurfaceHolderCallback.surfaceCreated(mSurfaceHolder); 1612 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1613 if (callbacks != null) { 1614 for (SurfaceHolder.Callback c : callbacks) { 1615 c.surfaceCreated(mSurfaceHolder); 1616 } 1617 } 1618 surfaceChanged = true; 1619 } 1620 if (surfaceChanged) { 1621 mSurfaceHolderCallback.surfaceChanged(mSurfaceHolder, 1622 lp.format, mWidth, mHeight); 1623 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1624 if (callbacks != null) { 1625 for (SurfaceHolder.Callback c : callbacks) { 1626 c.surfaceChanged(mSurfaceHolder, lp.format, 1627 mWidth, mHeight); 1628 } 1629 } 1630 } 1631 mIsCreating = false; 1632 } else if (hadSurface) { 1633 mSurfaceHolder.ungetCallbacks(); 1634 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1635 mSurfaceHolderCallback.surfaceDestroyed(mSurfaceHolder); 1636 if (callbacks != null) { 1637 for (SurfaceHolder.Callback c : callbacks) { 1638 c.surfaceDestroyed(mSurfaceHolder); 1639 } 1640 } 1641 mSurfaceHolder.mSurfaceLock.lock(); 1642 try { 1643 mSurfaceHolder.mSurface = new Surface(); 1644 } finally { 1645 mSurfaceHolder.mSurfaceLock.unlock(); 1646 } 1647 } 1648 } 1649 1650 if (mAttachInfo.mHardwareRenderer != null && 1651 mAttachInfo.mHardwareRenderer.isEnabled()) { 1652 if (hwInitialized || 1653 mWidth != mAttachInfo.mHardwareRenderer.getWidth() || 1654 mHeight != mAttachInfo.mHardwareRenderer.getHeight()) { 1655 mAttachInfo.mHardwareRenderer.setup(mWidth, mHeight); 1656 if (!hwInitialized) { 1657 mAttachInfo.mHardwareRenderer.invalidate(mHolder.getSurface()); 1658 mFullRedrawNeeded = true; 1659 } 1660 } 1661 } 1662 1663 if (!mStopped) { 1664 boolean focusChangedDueToTouchMode = ensureTouchModeLocally( 1665 (relayoutResult&WindowManagerGlobal.RELAYOUT_RES_IN_TOUCH_MODE) != 0); 1666 if (focusChangedDueToTouchMode || mWidth != host.getMeasuredWidth() 1667 || mHeight != host.getMeasuredHeight() || contentInsetsChanged) { 1668 int childWidthMeasureSpec = getRootMeasureSpec(mWidth, lp.width); 1669 int childHeightMeasureSpec = getRootMeasureSpec(mHeight, lp.height); 1670 1671 if (DEBUG_LAYOUT) Log.v(TAG, "Ooops, something changed! mWidth=" 1672 + mWidth + " measuredWidth=" + host.getMeasuredWidth() 1673 + " mHeight=" + mHeight 1674 + " measuredHeight=" + host.getMeasuredHeight() 1675 + " coveredInsetsChanged=" + contentInsetsChanged); 1676 1677 // Ask host how big it wants to be 1678 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1679 1680 // Implementation of weights from WindowManager.LayoutParams 1681 // We just grow the dimensions as needed and re-measure if 1682 // needs be 1683 int width = host.getMeasuredWidth(); 1684 int height = host.getMeasuredHeight(); 1685 boolean measureAgain = false; 1686 1687 if (lp.horizontalWeight > 0.0f) { 1688 width += (int) ((mWidth - width) * lp.horizontalWeight); 1689 childWidthMeasureSpec = MeasureSpec.makeMeasureSpec(width, 1690 MeasureSpec.EXACTLY); 1691 measureAgain = true; 1692 } 1693 if (lp.verticalWeight > 0.0f) { 1694 height += (int) ((mHeight - height) * lp.verticalWeight); 1695 childHeightMeasureSpec = MeasureSpec.makeMeasureSpec(height, 1696 MeasureSpec.EXACTLY); 1697 measureAgain = true; 1698 } 1699 1700 if (measureAgain) { 1701 if (DEBUG_LAYOUT) Log.v(TAG, 1702 "And hey let's measure once more: width=" + width 1703 + " height=" + height); 1704 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1705 } 1706 1707 layoutRequested = true; 1708 } 1709 } 1710 } else { 1711 // Not the first pass and no window/insets/visibility change but the window 1712 // may have moved and we need check that and if so to update the left and right 1713 // in the attach info. We translate only the window frame since on window move 1714 // the window manager tells us only for the new frame but the insets are the 1715 // same and we do not want to translate them more than once. 1716 1717 // TODO: Well, we are checking whether the frame has changed similarly 1718 // to how this is done for the insets. This is however incorrect since 1719 // the insets and the frame are translated. For example, the old frame 1720 // was (1, 1 - 1, 1) and was translated to say (2, 2 - 2, 2), now the new 1721 // reported frame is (2, 2 - 2, 2) which implies no change but this is not 1722 // true since we are comparing a not translated value to a translated one. 1723 // This scenario is rare but we may want to fix that. 1724 1725 final boolean windowMoved = (attachInfo.mWindowLeft != frame.left 1726 || attachInfo.mWindowTop != frame.top); 1727 if (windowMoved) { 1728 if (mTranslator != null) { 1729 mTranslator.translateRectInScreenToAppWinFrame(frame); 1730 } 1731 attachInfo.mWindowLeft = frame.left; 1732 attachInfo.mWindowTop = frame.top; 1733 } 1734 } 1735 1736 final boolean didLayout = layoutRequested && !mStopped; 1737 boolean triggerGlobalLayoutListener = didLayout 1738 || attachInfo.mRecomputeGlobalAttributes; 1739 if (didLayout) { 1740 performLayout(lp, desiredWindowWidth, desiredWindowHeight); 1741 1742 // By this point all views have been sized and positioned 1743 // We can compute the transparent area 1744 1745 if ((host.mPrivateFlags & View.PFLAG_REQUEST_TRANSPARENT_REGIONS) != 0) { 1746 // start out transparent 1747 // TODO: AVOID THAT CALL BY CACHING THE RESULT? 1748 host.getLocationInWindow(mTmpLocation); 1749 mTransparentRegion.set(mTmpLocation[0], mTmpLocation[1], 1750 mTmpLocation[0] + host.mRight - host.mLeft, 1751 mTmpLocation[1] + host.mBottom - host.mTop); 1752 1753 host.gatherTransparentRegion(mTransparentRegion); 1754 if (mTranslator != null) { 1755 mTranslator.translateRegionInWindowToScreen(mTransparentRegion); 1756 } 1757 1758 if (!mTransparentRegion.equals(mPreviousTransparentRegion)) { 1759 mPreviousTransparentRegion.set(mTransparentRegion); 1760 mFullRedrawNeeded = true; 1761 // reconfigure window manager 1762 try { 1763 mWindowSession.setTransparentRegion(mWindow, mTransparentRegion); 1764 } catch (RemoteException e) { 1765 } 1766 } 1767 } 1768 1769 if (DBG) { 1770 System.out.println("======================================"); 1771 System.out.println("performTraversals -- after setFrame"); 1772 host.debug(); 1773 } 1774 } 1775 1776 if (triggerGlobalLayoutListener) { 1777 attachInfo.mRecomputeGlobalAttributes = false; 1778 attachInfo.mTreeObserver.dispatchOnGlobalLayout(); 1779 } 1780 1781 if (computesInternalInsets) { 1782 // Clear the original insets. 1783 final ViewTreeObserver.InternalInsetsInfo insets = attachInfo.mGivenInternalInsets; 1784 insets.reset(); 1785 1786 // Compute new insets in place. 1787 attachInfo.mTreeObserver.dispatchOnComputeInternalInsets(insets); 1788 attachInfo.mHasNonEmptyGivenInternalInsets = !insets.isEmpty(); 1789 1790 // Tell the window manager. 1791 if (insetsPending || !mLastGivenInsets.equals(insets)) { 1792 mLastGivenInsets.set(insets); 1793 1794 // Translate insets to screen coordinates if needed. 1795 final Rect contentInsets; 1796 final Rect visibleInsets; 1797 final Region touchableRegion; 1798 if (mTranslator != null) { 1799 contentInsets = mTranslator.getTranslatedContentInsets(insets.contentInsets); 1800 visibleInsets = mTranslator.getTranslatedVisibleInsets(insets.visibleInsets); 1801 touchableRegion = mTranslator.getTranslatedTouchableArea(insets.touchableRegion); 1802 } else { 1803 contentInsets = insets.contentInsets; 1804 visibleInsets = insets.visibleInsets; 1805 touchableRegion = insets.touchableRegion; 1806 } 1807 1808 try { 1809 mWindowSession.setInsets(mWindow, insets.mTouchableInsets, 1810 contentInsets, visibleInsets, touchableRegion); 1811 } catch (RemoteException e) { 1812 } 1813 } 1814 } 1815 1816 boolean skipDraw = false; 1817 1818 if (mFirst) { 1819 // handle first focus request 1820 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: mView.hasFocus()=" 1821 + mView.hasFocus()); 1822 if (mView != null) { 1823 if (!mView.hasFocus()) { 1824 mView.requestFocus(View.FOCUS_FORWARD); 1825 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: requested focused view=" 1826 + mView.findFocus()); 1827 } else { 1828 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: existing focused view=" 1829 + mView.findFocus()); 1830 } 1831 } 1832 if ((relayoutResult & WindowManagerGlobal.RELAYOUT_RES_ANIMATING) != 0) { 1833 // The first time we relayout the window, if the system is 1834 // doing window animations, we want to hold of on any future 1835 // draws until the animation is done. 1836 mWindowsAnimating = true; 1837 } 1838 } else if (mWindowsAnimating) { 1839 skipDraw = true; 1840 } 1841 1842 mFirst = false; 1843 mWillDrawSoon = false; 1844 mNewSurfaceNeeded = false; 1845 mViewVisibility = viewVisibility; 1846 1847 if (mAttachInfo.mHasWindowFocus && !isInLocalFocusMode()) { 1848 final boolean imTarget = WindowManager.LayoutParams 1849 .mayUseInputMethod(mWindowAttributes.flags); 1850 if (imTarget != mLastWasImTarget) { 1851 mLastWasImTarget = imTarget; 1852 InputMethodManager imm = InputMethodManager.peekInstance(); 1853 if (imm != null && imTarget) { 1854 imm.startGettingWindowFocus(mView); 1855 imm.onWindowFocus(mView, mView.findFocus(), 1856 mWindowAttributes.softInputMode, 1857 !mHasHadWindowFocus, mWindowAttributes.flags); 1858 } 1859 } 1860 } 1861 1862 // Remember if we must report the next draw. 1863 if ((relayoutResult & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 1864 mReportNextDraw = true; 1865 } 1866 1867 boolean cancelDraw = attachInfo.mTreeObserver.dispatchOnPreDraw() || 1868 viewVisibility != View.VISIBLE; 1869 1870 if (!cancelDraw && !newSurface) { 1871 if (!skipDraw || mReportNextDraw) { 1872 if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 1873 for (int i = 0; i < mPendingTransitions.size(); ++i) { 1874 mPendingTransitions.get(i).startChangingAnimations(); 1875 } 1876 mPendingTransitions.clear(); 1877 } 1878 1879 performDraw(); 1880 } 1881 } else { 1882 if (viewVisibility == View.VISIBLE) { 1883 // Try again 1884 scheduleTraversals(); 1885 } else if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 1886 for (int i = 0; i < mPendingTransitions.size(); ++i) { 1887 mPendingTransitions.get(i).endChangingAnimations(); 1888 } 1889 mPendingTransitions.clear(); 1890 } 1891 } 1892 1893 mIsInTraversal = false; 1894 } 1895 1896 private void handleOutOfResourcesException(Surface.OutOfResourcesException e) { 1897 Log.e(TAG, "OutOfResourcesException initializing HW surface", e); 1898 try { 1899 if (!mWindowSession.outOfMemory(mWindow) && 1900 Process.myUid() != Process.SYSTEM_UID) { 1901 Slog.w(TAG, "No processes killed for memory; killing self"); 1902 Process.killProcess(Process.myPid()); 1903 } 1904 } catch (RemoteException ex) { 1905 } 1906 mLayoutRequested = true; // ask wm for a new surface next time. 1907 } 1908 1909 private void performMeasure(int childWidthMeasureSpec, int childHeightMeasureSpec) { 1910 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "measure"); 1911 try { 1912 mView.measure(childWidthMeasureSpec, childHeightMeasureSpec); 1913 } finally { 1914 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 1915 } 1916 } 1917 1918 /** 1919 * Called by {@link android.view.View#isInLayout()} to determine whether the view hierarchy 1920 * is currently undergoing a layout pass. 1921 * 1922 * @return whether the view hierarchy is currently undergoing a layout pass 1923 */ 1924 boolean isInLayout() { 1925 return mInLayout; 1926 } 1927 1928 /** 1929 * Called by {@link android.view.View#requestLayout()} if the view hierarchy is currently 1930 * undergoing a layout pass. requestLayout() should not generally be called during layout, 1931 * unless the container hierarchy knows what it is doing (i.e., it is fine as long as 1932 * all children in that container hierarchy are measured and laid out at the end of the layout 1933 * pass for that container). If requestLayout() is called anyway, we handle it correctly 1934 * by registering all requesters during a frame as it proceeds. At the end of the frame, 1935 * we check all of those views to see if any still have pending layout requests, which 1936 * indicates that they were not correctly handled by their container hierarchy. If that is 1937 * the case, we clear all such flags in the tree, to remove the buggy flag state that leads 1938 * to blank containers, and force a second request/measure/layout pass in this frame. If 1939 * more requestLayout() calls are received during that second layout pass, we post those 1940 * requests to the next frame to avoid possible infinite loops. 1941 * 1942 * <p>The return value from this method indicates whether the request should proceed 1943 * (if it is a request during the first layout pass) or should be skipped and posted to the 1944 * next frame (if it is a request during the second layout pass).</p> 1945 * 1946 * @param view the view that requested the layout. 1947 * 1948 * @return true if request should proceed, false otherwise. 1949 */ 1950 boolean requestLayoutDuringLayout(final View view) { 1951 if (view.mParent == null || view.mAttachInfo == null) { 1952 // Would not normally trigger another layout, so just let it pass through as usual 1953 return true; 1954 } 1955 if (!mLayoutRequesters.contains(view)) { 1956 mLayoutRequesters.add(view); 1957 } 1958 if (!mHandlingLayoutInLayoutRequest) { 1959 // Let the request proceed normally; it will be processed in a second layout pass 1960 // if necessary 1961 return true; 1962 } else { 1963 // Don't let the request proceed during the second layout pass. 1964 // It will post to the next frame instead. 1965 return false; 1966 } 1967 } 1968 1969 private void performLayout(WindowManager.LayoutParams lp, int desiredWindowWidth, 1970 int desiredWindowHeight) { 1971 mLayoutRequested = false; 1972 mScrollMayChange = true; 1973 mInLayout = true; 1974 1975 final View host = mView; 1976 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) { 1977 Log.v(TAG, "Laying out " + host + " to (" + 1978 host.getMeasuredWidth() + ", " + host.getMeasuredHeight() + ")"); 1979 } 1980 1981 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "layout"); 1982 try { 1983 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 1984 1985 mInLayout = false; 1986 int numViewsRequestingLayout = mLayoutRequesters.size(); 1987 if (numViewsRequestingLayout > 0) { 1988 // requestLayout() was called during layout. 1989 // If no layout-request flags are set on the requesting views, there is no problem. 1990 // If some requests are still pending, then we need to clear those flags and do 1991 // a full request/measure/layout pass to handle this situation. 1992 ArrayList<View> validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, 1993 false); 1994 if (validLayoutRequesters != null) { 1995 // Set this flag to indicate that any further requests are happening during 1996 // the second pass, which may result in posting those requests to the next 1997 // frame instead 1998 mHandlingLayoutInLayoutRequest = true; 1999 2000 // Process fresh layout requests, then measure and layout 2001 int numValidRequests = validLayoutRequesters.size(); 2002 for (int i = 0; i < numValidRequests; ++i) { 2003 final View view = validLayoutRequesters.get(i); 2004 Log.w("View", "requestLayout() improperly called by " + view + 2005 " during layout: running second layout pass"); 2006 view.requestLayout(); 2007 } 2008 measureHierarchy(host, lp, mView.getContext().getResources(), 2009 desiredWindowWidth, desiredWindowHeight); 2010 mInLayout = true; 2011 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 2012 2013 mHandlingLayoutInLayoutRequest = false; 2014 2015 // Check the valid requests again, this time without checking/clearing the 2016 // layout flags, since requests happening during the second pass get noop'd 2017 validLayoutRequesters = getValidLayoutRequesters(mLayoutRequesters, true); 2018 if (validLayoutRequesters != null) { 2019 final ArrayList<View> finalRequesters = validLayoutRequesters; 2020 // Post second-pass requests to the next frame 2021 getRunQueue().post(new Runnable() { 2022 @Override 2023 public void run() { 2024 int numValidRequests = finalRequesters.size(); 2025 for (int i = 0; i < numValidRequests; ++i) { 2026 final View view = finalRequesters.get(i); 2027 Log.w("View", "requestLayout() improperly called by " + view + 2028 " during second layout pass: posting in next frame"); 2029 view.requestLayout(); 2030 } 2031 } 2032 }); 2033 } 2034 } 2035 2036 } 2037 } finally { 2038 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2039 } 2040 mInLayout = false; 2041 } 2042 2043 /** 2044 * This method is called during layout when there have been calls to requestLayout() during 2045 * layout. It walks through the list of views that requested layout to determine which ones 2046 * still need it, based on visibility in the hierarchy and whether they have already been 2047 * handled (as is usually the case with ListView children). 2048 * 2049 * @param layoutRequesters The list of views that requested layout during layout 2050 * @param secondLayoutRequests Whether the requests were issued during the second layout pass. 2051 * If so, the FORCE_LAYOUT flag was not set on requesters. 2052 * @return A list of the actual views that still need to be laid out. 2053 */ 2054 private ArrayList<View> getValidLayoutRequesters(ArrayList<View> layoutRequesters, 2055 boolean secondLayoutRequests) { 2056 2057 int numViewsRequestingLayout = layoutRequesters.size(); 2058 ArrayList<View> validLayoutRequesters = null; 2059 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2060 View view = layoutRequesters.get(i); 2061 if (view != null && view.mAttachInfo != null && view.mParent != null && 2062 (secondLayoutRequests || (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) == 2063 View.PFLAG_FORCE_LAYOUT)) { 2064 boolean gone = false; 2065 View parent = view; 2066 // Only trigger new requests for views in a non-GONE hierarchy 2067 while (parent != null) { 2068 if ((parent.mViewFlags & View.VISIBILITY_MASK) == View.GONE) { 2069 gone = true; 2070 break; 2071 } 2072 if (parent.mParent instanceof View) { 2073 parent = (View) parent.mParent; 2074 } else { 2075 parent = null; 2076 } 2077 } 2078 if (!gone) { 2079 if (validLayoutRequesters == null) { 2080 validLayoutRequesters = new ArrayList<View>(); 2081 } 2082 validLayoutRequesters.add(view); 2083 } 2084 } 2085 } 2086 if (!secondLayoutRequests) { 2087 // If we're checking the layout flags, then we need to clean them up also 2088 for (int i = 0; i < numViewsRequestingLayout; ++i) { 2089 View view = layoutRequesters.get(i); 2090 while (view != null && 2091 (view.mPrivateFlags & View.PFLAG_FORCE_LAYOUT) != 0) { 2092 view.mPrivateFlags &= ~View.PFLAG_FORCE_LAYOUT; 2093 if (view.mParent instanceof View) { 2094 view = (View) view.mParent; 2095 } else { 2096 view = null; 2097 } 2098 } 2099 } 2100 } 2101 layoutRequesters.clear(); 2102 return validLayoutRequesters; 2103 } 2104 2105 @Override 2106 public void requestTransparentRegion(View child) { 2107 // the test below should not fail unless someone is messing with us 2108 checkThread(); 2109 if (mView == child) { 2110 mView.mPrivateFlags |= View.PFLAG_REQUEST_TRANSPARENT_REGIONS; 2111 // Need to make sure we re-evaluate the window attributes next 2112 // time around, to ensure the window has the correct format. 2113 mWindowAttributesChanged = true; 2114 mWindowAttributesChangesFlag = 0; 2115 requestLayout(); 2116 } 2117 } 2118 2119 /** 2120 * Figures out the measure spec for the root view in a window based on it's 2121 * layout params. 2122 * 2123 * @param windowSize 2124 * The available width or height of the window 2125 * 2126 * @param rootDimension 2127 * The layout params for one dimension (width or height) of the 2128 * window. 2129 * 2130 * @return The measure spec to use to measure the root view. 2131 */ 2132 private static int getRootMeasureSpec(int windowSize, int rootDimension) { 2133 int measureSpec; 2134 switch (rootDimension) { 2135 2136 case ViewGroup.LayoutParams.MATCH_PARENT: 2137 // Window can't resize. Force root view to be windowSize. 2138 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.EXACTLY); 2139 break; 2140 case ViewGroup.LayoutParams.WRAP_CONTENT: 2141 // Window can resize. Set max size for root view. 2142 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.AT_MOST); 2143 break; 2144 default: 2145 // Window wants to be an exact size. Force root view to be that size. 2146 measureSpec = MeasureSpec.makeMeasureSpec(rootDimension, MeasureSpec.EXACTLY); 2147 break; 2148 } 2149 return measureSpec; 2150 } 2151 2152 int mHardwareYOffset; 2153 int mResizeAlpha; 2154 final Paint mResizePaint = new Paint(); 2155 2156 @Override 2157 public void onHardwarePreDraw(HardwareCanvas canvas) { 2158 canvas.translate(0, -mHardwareYOffset); 2159 } 2160 2161 @Override 2162 public void onHardwarePostDraw(HardwareCanvas canvas) { 2163 if (mResizeBuffer != null) { 2164 mResizePaint.setAlpha(mResizeAlpha); 2165 canvas.drawHardwareLayer(mResizeBuffer, 0.0f, mHardwareYOffset, mResizePaint); 2166 } 2167 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2168 } 2169 2170 /** 2171 * @hide 2172 */ 2173 void outputDisplayList(View view) { 2174 if (mAttachInfo != null && mAttachInfo.mHardwareCanvas != null) { 2175 DisplayList displayList = view.getDisplayList(); 2176 if (displayList != null) { 2177 mAttachInfo.mHardwareCanvas.outputDisplayList(displayList); 2178 } 2179 } 2180 } 2181 2182 /** 2183 * @see #PROPERTY_PROFILE_RENDERING 2184 */ 2185 private void profileRendering(boolean enabled) { 2186 if (mProfileRendering) { 2187 mRenderProfilingEnabled = enabled; 2188 2189 if (mRenderProfiler != null) { 2190 mChoreographer.removeFrameCallback(mRenderProfiler); 2191 } 2192 if (mRenderProfilingEnabled) { 2193 if (mRenderProfiler == null) { 2194 mRenderProfiler = new Choreographer.FrameCallback() { 2195 @Override 2196 public void doFrame(long frameTimeNanos) { 2197 mDirty.set(0, 0, mWidth, mHeight); 2198 scheduleTraversals(); 2199 if (mRenderProfilingEnabled) { 2200 mChoreographer.postFrameCallback(mRenderProfiler); 2201 } 2202 } 2203 }; 2204 } 2205 mChoreographer.postFrameCallback(mRenderProfiler); 2206 } else { 2207 mRenderProfiler = null; 2208 } 2209 } 2210 } 2211 2212 /** 2213 * Called from draw() when DEBUG_FPS is enabled 2214 */ 2215 private void trackFPS() { 2216 // Tracks frames per second drawn. First value in a series of draws may be bogus 2217 // because it down not account for the intervening idle time 2218 long nowTime = System.currentTimeMillis(); 2219 if (mFpsStartTime < 0) { 2220 mFpsStartTime = mFpsPrevTime = nowTime; 2221 mFpsNumFrames = 0; 2222 } else { 2223 ++mFpsNumFrames; 2224 String thisHash = Integer.toHexString(System.identityHashCode(this)); 2225 long frameTime = nowTime - mFpsPrevTime; 2226 long totalTime = nowTime - mFpsStartTime; 2227 Log.v(TAG, "0x" + thisHash + "\tFrame time:\t" + frameTime); 2228 mFpsPrevTime = nowTime; 2229 if (totalTime > 1000) { 2230 float fps = (float) mFpsNumFrames * 1000 / totalTime; 2231 Log.v(TAG, "0x" + thisHash + "\tFPS:\t" + fps); 2232 mFpsStartTime = nowTime; 2233 mFpsNumFrames = 0; 2234 } 2235 } 2236 } 2237 2238 private void performDraw() { 2239 if (!mAttachInfo.mScreenOn && !mReportNextDraw) { 2240 return; 2241 } 2242 2243 final boolean fullRedrawNeeded = mFullRedrawNeeded; 2244 mFullRedrawNeeded = false; 2245 2246 mIsDrawing = true; 2247 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "draw"); 2248 try { 2249 draw(fullRedrawNeeded); 2250 } finally { 2251 mIsDrawing = false; 2252 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2253 } 2254 2255 if (mReportNextDraw) { 2256 mReportNextDraw = false; 2257 2258 if (LOCAL_LOGV) { 2259 Log.v(TAG, "FINISHED DRAWING: " + mWindowAttributes.getTitle()); 2260 } 2261 if (mSurfaceHolder != null && mSurface.isValid()) { 2262 mSurfaceHolderCallback.surfaceRedrawNeeded(mSurfaceHolder); 2263 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 2264 if (callbacks != null) { 2265 for (SurfaceHolder.Callback c : callbacks) { 2266 if (c instanceof SurfaceHolder.Callback2) { 2267 ((SurfaceHolder.Callback2)c).surfaceRedrawNeeded( 2268 mSurfaceHolder); 2269 } 2270 } 2271 } 2272 } 2273 try { 2274 mWindowSession.finishDrawing(mWindow); 2275 } catch (RemoteException e) { 2276 } 2277 } 2278 } 2279 2280 private void draw(boolean fullRedrawNeeded) { 2281 Surface surface = mSurface; 2282 if (!surface.isValid()) { 2283 return; 2284 } 2285 2286 if (DEBUG_FPS) { 2287 trackFPS(); 2288 } 2289 2290 if (!sFirstDrawComplete) { 2291 synchronized (sFirstDrawHandlers) { 2292 sFirstDrawComplete = true; 2293 final int count = sFirstDrawHandlers.size(); 2294 for (int i = 0; i< count; i++) { 2295 mHandler.post(sFirstDrawHandlers.get(i)); 2296 } 2297 } 2298 } 2299 2300 scrollToRectOrFocus(null, false); 2301 2302 final AttachInfo attachInfo = mAttachInfo; 2303 if (attachInfo.mViewScrollChanged) { 2304 attachInfo.mViewScrollChanged = false; 2305 attachInfo.mTreeObserver.dispatchOnScrollChanged(); 2306 } 2307 2308 int yoff; 2309 boolean animating = mScroller != null && mScroller.computeScrollOffset(); 2310 if (animating) { 2311 yoff = mScroller.getCurrY(); 2312 } else { 2313 yoff = mScrollY; 2314 } 2315 if (mCurScrollY != yoff) { 2316 mCurScrollY = yoff; 2317 fullRedrawNeeded = true; 2318 } 2319 2320 final float appScale = attachInfo.mApplicationScale; 2321 final boolean scalingRequired = attachInfo.mScalingRequired; 2322 2323 int resizeAlpha = 0; 2324 if (mResizeBuffer != null) { 2325 long deltaTime = SystemClock.uptimeMillis() - mResizeBufferStartTime; 2326 if (deltaTime < mResizeBufferDuration) { 2327 float amt = deltaTime/(float) mResizeBufferDuration; 2328 amt = mResizeInterpolator.getInterpolation(amt); 2329 animating = true; 2330 resizeAlpha = 255 - (int)(amt*255); 2331 } else { 2332 disposeResizeBuffer(); 2333 } 2334 } 2335 2336 final Rect dirty = mDirty; 2337 if (mSurfaceHolder != null) { 2338 // The app owns the surface, we won't draw. 2339 dirty.setEmpty(); 2340 if (animating) { 2341 if (mScroller != null) { 2342 mScroller.abortAnimation(); 2343 } 2344 disposeResizeBuffer(); 2345 } 2346 return; 2347 } 2348 2349 if (fullRedrawNeeded) { 2350 attachInfo.mIgnoreDirtyState = true; 2351 dirty.set(0, 0, (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 2352 } 2353 2354 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2355 Log.v(TAG, "Draw " + mView + "/" 2356 + mWindowAttributes.getTitle() 2357 + ": dirty={" + dirty.left + "," + dirty.top 2358 + "," + dirty.right + "," + dirty.bottom + "} surface=" 2359 + surface + " surface.isValid()=" + surface.isValid() + ", appScale:" + 2360 appScale + ", width=" + mWidth + ", height=" + mHeight); 2361 } 2362 2363 invalidateDisplayLists(); 2364 2365 attachInfo.mTreeObserver.dispatchOnDraw(); 2366 2367 if (!dirty.isEmpty() || mIsAnimating) { 2368 if (attachInfo.mHardwareRenderer != null && attachInfo.mHardwareRenderer.isEnabled()) { 2369 // Draw with hardware renderer. 2370 mIsAnimating = false; 2371 mHardwareYOffset = yoff; 2372 mResizeAlpha = resizeAlpha; 2373 2374 mCurrentDirty.set(dirty); 2375 dirty.setEmpty(); 2376 2377 attachInfo.mHardwareRenderer.draw(mView, attachInfo, this, 2378 animating ? null : mCurrentDirty); 2379 } else { 2380 // If we get here with a disabled & requested hardware renderer, something went 2381 // wrong (an invalidate posted right before we destroyed the hardware surface 2382 // for instance) so we should just bail out. Locking the surface with software 2383 // rendering at this point would lock it forever and prevent hardware renderer 2384 // from doing its job when it comes back. 2385 // Before we request a new frame we must however attempt to reinitiliaze the 2386 // hardware renderer if it's in requested state. This would happen after an 2387 // eglTerminate() for instance. 2388 if (attachInfo.mHardwareRenderer != null && 2389 !attachInfo.mHardwareRenderer.isEnabled() && 2390 attachInfo.mHardwareRenderer.isRequested()) { 2391 2392 try { 2393 attachInfo.mHardwareRenderer.initializeIfNeeded(mWidth, mHeight, 2394 mHolder.getSurface()); 2395 } catch (OutOfResourcesException e) { 2396 handleOutOfResourcesException(e); 2397 return; 2398 } 2399 2400 mFullRedrawNeeded = true; 2401 scheduleTraversals(); 2402 return; 2403 } 2404 2405 if (!drawSoftware(surface, attachInfo, yoff, scalingRequired, dirty)) { 2406 return; 2407 } 2408 } 2409 } 2410 2411 if (animating) { 2412 mFullRedrawNeeded = true; 2413 scheduleTraversals(); 2414 } 2415 } 2416 2417 /** 2418 * @return true if drawing was succesfull, false if an error occurred 2419 */ 2420 private boolean drawSoftware(Surface surface, AttachInfo attachInfo, int yoff, 2421 boolean scalingRequired, Rect dirty) { 2422 2423 // Draw with software renderer. 2424 Canvas canvas; 2425 try { 2426 int left = dirty.left; 2427 int top = dirty.top; 2428 int right = dirty.right; 2429 int bottom = dirty.bottom; 2430 2431 canvas = mSurface.lockCanvas(dirty); 2432 2433 // The dirty rectangle can be modified by Surface.lockCanvas() 2434 //noinspection ConstantConditions 2435 if (left != dirty.left || top != dirty.top || right != dirty.right || 2436 bottom != dirty.bottom) { 2437 attachInfo.mIgnoreDirtyState = true; 2438 } 2439 2440 // TODO: Do this in native 2441 canvas.setDensity(mDensity); 2442 } catch (Surface.OutOfResourcesException e) { 2443 handleOutOfResourcesException(e); 2444 return false; 2445 } catch (IllegalArgumentException e) { 2446 Log.e(TAG, "Could not lock surface", e); 2447 // Don't assume this is due to out of memory, it could be 2448 // something else, and if it is something else then we could 2449 // kill stuff (or ourself) for no reason. 2450 mLayoutRequested = true; // ask wm for a new surface next time. 2451 return false; 2452 } 2453 2454 try { 2455 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2456 Log.v(TAG, "Surface " + surface + " drawing to bitmap w=" 2457 + canvas.getWidth() + ", h=" + canvas.getHeight()); 2458 //canvas.drawARGB(255, 255, 0, 0); 2459 } 2460 2461 // If this bitmap's format includes an alpha channel, we 2462 // need to clear it before drawing so that the child will 2463 // properly re-composite its drawing on a transparent 2464 // background. This automatically respects the clip/dirty region 2465 // or 2466 // If we are applying an offset, we need to clear the area 2467 // where the offset doesn't appear to avoid having garbage 2468 // left in the blank areas. 2469 if (!canvas.isOpaque() || yoff != 0) { 2470 canvas.drawColor(0, PorterDuff.Mode.CLEAR); 2471 } 2472 2473 dirty.setEmpty(); 2474 mIsAnimating = false; 2475 attachInfo.mDrawingTime = SystemClock.uptimeMillis(); 2476 mView.mPrivateFlags |= View.PFLAG_DRAWN; 2477 2478 if (DEBUG_DRAW) { 2479 Context cxt = mView.getContext(); 2480 Log.i(TAG, "Drawing: package:" + cxt.getPackageName() + 2481 ", metrics=" + cxt.getResources().getDisplayMetrics() + 2482 ", compatibilityInfo=" + cxt.getResources().getCompatibilityInfo()); 2483 } 2484 try { 2485 canvas.translate(0, -yoff); 2486 if (mTranslator != null) { 2487 mTranslator.translateCanvas(canvas); 2488 } 2489 canvas.setScreenDensity(scalingRequired ? mNoncompatDensity : 0); 2490 attachInfo.mSetIgnoreDirtyState = false; 2491 2492 mView.draw(canvas); 2493 2494 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2495 } finally { 2496 if (!attachInfo.mSetIgnoreDirtyState) { 2497 // Only clear the flag if it was not set during the mView.draw() call 2498 attachInfo.mIgnoreDirtyState = false; 2499 } 2500 } 2501 } finally { 2502 try { 2503 surface.unlockCanvasAndPost(canvas); 2504 } catch (IllegalArgumentException e) { 2505 Log.e(TAG, "Could not unlock surface", e); 2506 mLayoutRequested = true; // ask wm for a new surface next time. 2507 //noinspection ReturnInsideFinallyBlock 2508 return false; 2509 } 2510 2511 if (LOCAL_LOGV) { 2512 Log.v(TAG, "Surface " + surface + " unlockCanvasAndPost"); 2513 } 2514 } 2515 return true; 2516 } 2517 2518 /** 2519 * We want to draw a highlight around the current accessibility focused. 2520 * Since adding a style for all possible view is not a viable option we 2521 * have this specialized drawing method. 2522 * 2523 * Note: We are doing this here to be able to draw the highlight for 2524 * virtual views in addition to real ones. 2525 * 2526 * @param canvas The canvas on which to draw. 2527 */ 2528 private void drawAccessibilityFocusedDrawableIfNeeded(Canvas canvas) { 2529 AccessibilityManager manager = AccessibilityManager.getInstance(mView.mContext); 2530 if (!manager.isEnabled() || !manager.isTouchExplorationEnabled()) { 2531 return; 2532 } 2533 if (mAccessibilityFocusedHost == null || mAccessibilityFocusedHost.mAttachInfo == null) { 2534 return; 2535 } 2536 Drawable drawable = getAccessibilityFocusedDrawable(); 2537 if (drawable == null) { 2538 return; 2539 } 2540 AccessibilityNodeProvider provider = 2541 mAccessibilityFocusedHost.getAccessibilityNodeProvider(); 2542 Rect bounds = mView.mAttachInfo.mTmpInvalRect; 2543 if (provider == null) { 2544 mAccessibilityFocusedHost.getBoundsOnScreen(bounds); 2545 } else { 2546 if (mAccessibilityFocusedVirtualView == null) { 2547 return; 2548 } 2549 mAccessibilityFocusedVirtualView.getBoundsInScreen(bounds); 2550 } 2551 bounds.offset(-mAttachInfo.mWindowLeft, -mAttachInfo.mWindowTop); 2552 bounds.intersect(0, 0, mAttachInfo.mViewRootImpl.mWidth, mAttachInfo.mViewRootImpl.mHeight); 2553 drawable.setBounds(bounds); 2554 drawable.draw(canvas); 2555 } 2556 2557 private Drawable getAccessibilityFocusedDrawable() { 2558 if (mAttachInfo != null) { 2559 // Lazily load the accessibility focus drawable. 2560 if (mAttachInfo.mAccessibilityFocusDrawable == null) { 2561 TypedValue value = new TypedValue(); 2562 final boolean resolved = mView.mContext.getTheme().resolveAttribute( 2563 R.attr.accessibilityFocusedDrawable, value, true); 2564 if (resolved) { 2565 mAttachInfo.mAccessibilityFocusDrawable = 2566 mView.mContext.getResources().getDrawable(value.resourceId); 2567 } 2568 } 2569 return mAttachInfo.mAccessibilityFocusDrawable; 2570 } 2571 return null; 2572 } 2573 2574 void invalidateDisplayLists() { 2575 final ArrayList<DisplayList> displayLists = mDisplayLists; 2576 final int count = displayLists.size(); 2577 2578 for (int i = 0; i < count; i++) { 2579 final DisplayList displayList = displayLists.get(i); 2580 if (displayList.isDirty()) { 2581 displayList.reset(); 2582 } 2583 } 2584 2585 displayLists.clear(); 2586 } 2587 2588 /** 2589 * @hide 2590 */ 2591 public void setDrawDuringWindowsAnimating(boolean value) { 2592 mDrawDuringWindowsAnimating = value; 2593 if (value) { 2594 handleDispatchDoneAnimating(); 2595 } 2596 } 2597 2598 boolean scrollToRectOrFocus(Rect rectangle, boolean immediate) { 2599 final View.AttachInfo attachInfo = mAttachInfo; 2600 final Rect ci = attachInfo.mContentInsets; 2601 final Rect vi = attachInfo.mVisibleInsets; 2602 int scrollY = 0; 2603 boolean handled = false; 2604 2605 if (vi.left > ci.left || vi.top > ci.top 2606 || vi.right > ci.right || vi.bottom > ci.bottom) { 2607 // We'll assume that we aren't going to change the scroll 2608 // offset, since we want to avoid that unless it is actually 2609 // going to make the focus visible... otherwise we scroll 2610 // all over the place. 2611 scrollY = mScrollY; 2612 // We can be called for two different situations: during a draw, 2613 // to update the scroll position if the focus has changed (in which 2614 // case 'rectangle' is null), or in response to a 2615 // requestChildRectangleOnScreen() call (in which case 'rectangle' 2616 // is non-null and we just want to scroll to whatever that 2617 // rectangle is). 2618 final View focus = mView.findFocus(); 2619 if (focus == null) { 2620 return false; 2621 } 2622 View lastScrolledFocus = (mLastScrolledFocus != null) ? mLastScrolledFocus.get() : null; 2623 if (focus != lastScrolledFocus) { 2624 // If the focus has changed, then ignore any requests to scroll 2625 // to a rectangle; first we want to make sure the entire focus 2626 // view is visible. 2627 rectangle = null; 2628 } 2629 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Eval scroll: focus=" + focus 2630 + " rectangle=" + rectangle + " ci=" + ci 2631 + " vi=" + vi); 2632 if (focus == lastScrolledFocus && !mScrollMayChange && rectangle == null) { 2633 // Optimization: if the focus hasn't changed since last 2634 // time, and no layout has happened, then just leave things 2635 // as they are. 2636 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Keeping scroll y=" 2637 + mScrollY + " vi=" + vi.toShortString()); 2638 } else { 2639 // We need to determine if the currently focused view is 2640 // within the visible part of the window and, if not, apply 2641 // a pan so it can be seen. 2642 mLastScrolledFocus = new WeakReference<View>(focus); 2643 mScrollMayChange = false; 2644 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Need to scroll?"); 2645 // Try to find the rectangle from the focus view. 2646 if (focus.getGlobalVisibleRect(mVisRect, null)) { 2647 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Root w=" 2648 + mView.getWidth() + " h=" + mView.getHeight() 2649 + " ci=" + ci.toShortString() 2650 + " vi=" + vi.toShortString()); 2651 if (rectangle == null) { 2652 focus.getFocusedRect(mTempRect); 2653 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Focus " + focus 2654 + ": focusRect=" + mTempRect.toShortString()); 2655 if (mView instanceof ViewGroup) { 2656 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 2657 focus, mTempRect); 2658 } 2659 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2660 "Focus in window: focusRect=" 2661 + mTempRect.toShortString() 2662 + " visRect=" + mVisRect.toShortString()); 2663 } else { 2664 mTempRect.set(rectangle); 2665 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2666 "Request scroll to rect: " 2667 + mTempRect.toShortString() 2668 + " visRect=" + mVisRect.toShortString()); 2669 } 2670 if (mTempRect.intersect(mVisRect)) { 2671 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2672 "Focus window visible rect: " 2673 + mTempRect.toShortString()); 2674 if (mTempRect.height() > 2675 (mView.getHeight()-vi.top-vi.bottom)) { 2676 // If the focus simply is not going to fit, then 2677 // best is probably just to leave things as-is. 2678 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2679 "Too tall; leaving scrollY=" + scrollY); 2680 } else if ((mTempRect.top-scrollY) < vi.top) { 2681 scrollY -= vi.top - (mTempRect.top-scrollY); 2682 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2683 "Top covered; scrollY=" + scrollY); 2684 } else if ((mTempRect.bottom-scrollY) 2685 > (mView.getHeight()-vi.bottom)) { 2686 scrollY += (mTempRect.bottom-scrollY) 2687 - (mView.getHeight()-vi.bottom); 2688 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2689 "Bottom covered; scrollY=" + scrollY); 2690 } 2691 handled = true; 2692 } 2693 } 2694 } 2695 } 2696 2697 if (scrollY != mScrollY) { 2698 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Pan scroll changed: old=" 2699 + mScrollY + " , new=" + scrollY); 2700 if (!immediate && mResizeBuffer == null) { 2701 if (mScroller == null) { 2702 mScroller = new Scroller(mView.getContext()); 2703 } 2704 mScroller.startScroll(0, mScrollY, 0, scrollY-mScrollY); 2705 } else if (mScroller != null) { 2706 mScroller.abortAnimation(); 2707 } 2708 mScrollY = scrollY; 2709 } 2710 2711 return handled; 2712 } 2713 2714 /** 2715 * @hide 2716 */ 2717 public View getAccessibilityFocusedHost() { 2718 return mAccessibilityFocusedHost; 2719 } 2720 2721 /** 2722 * @hide 2723 */ 2724 public AccessibilityNodeInfo getAccessibilityFocusedVirtualView() { 2725 return mAccessibilityFocusedVirtualView; 2726 } 2727 2728 void setAccessibilityFocus(View view, AccessibilityNodeInfo node) { 2729 // If we have a virtual view with accessibility focus we need 2730 // to clear the focus and invalidate the virtual view bounds. 2731 if (mAccessibilityFocusedVirtualView != null) { 2732 2733 AccessibilityNodeInfo focusNode = mAccessibilityFocusedVirtualView; 2734 View focusHost = mAccessibilityFocusedHost; 2735 2736 // Wipe the state of the current accessibility focus since 2737 // the call into the provider to clear accessibility focus 2738 // will fire an accessibility event which will end up calling 2739 // this method and we want to have clean state when this 2740 // invocation happens. 2741 mAccessibilityFocusedHost = null; 2742 mAccessibilityFocusedVirtualView = null; 2743 2744 // Clear accessibility focus on the host after clearing state since 2745 // this method may be reentrant. 2746 focusHost.clearAccessibilityFocusNoCallbacks(); 2747 2748 AccessibilityNodeProvider provider = focusHost.getAccessibilityNodeProvider(); 2749 if (provider != null) { 2750 // Invalidate the area of the cleared accessibility focus. 2751 focusNode.getBoundsInParent(mTempRect); 2752 focusHost.invalidate(mTempRect); 2753 // Clear accessibility focus in the virtual node. 2754 final int virtualNodeId = AccessibilityNodeInfo.getVirtualDescendantId( 2755 focusNode.getSourceNodeId()); 2756 provider.performAction(virtualNodeId, 2757 AccessibilityNodeInfo.ACTION_CLEAR_ACCESSIBILITY_FOCUS, null); 2758 } 2759 focusNode.recycle(); 2760 } 2761 if (mAccessibilityFocusedHost != null) { 2762 // Clear accessibility focus in the view. 2763 mAccessibilityFocusedHost.clearAccessibilityFocusNoCallbacks(); 2764 } 2765 2766 // Set the new focus host and node. 2767 mAccessibilityFocusedHost = view; 2768 mAccessibilityFocusedVirtualView = node; 2769 } 2770 2771 @Override 2772 public void requestChildFocus(View child, View focused) { 2773 if (DEBUG_INPUT_RESIZE) { 2774 Log.v(TAG, "Request child focus: focus now " + focused); 2775 } 2776 checkThread(); 2777 scheduleTraversals(); 2778 } 2779 2780 @Override 2781 public void clearChildFocus(View child) { 2782 if (DEBUG_INPUT_RESIZE) { 2783 Log.v(TAG, "Clearing child focus"); 2784 } 2785 checkThread(); 2786 scheduleTraversals(); 2787 } 2788 2789 @Override 2790 public ViewParent getParentForAccessibility() { 2791 return null; 2792 } 2793 2794 @Override 2795 public void focusableViewAvailable(View v) { 2796 checkThread(); 2797 if (mView != null) { 2798 if (!mView.hasFocus()) { 2799 v.requestFocus(); 2800 } else { 2801 // the one case where will transfer focus away from the current one 2802 // is if the current view is a view group that prefers to give focus 2803 // to its children first AND the view is a descendant of it. 2804 View focused = mView.findFocus(); 2805 if (focused instanceof ViewGroup) { 2806 ViewGroup group = (ViewGroup) focused; 2807 if (group.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 2808 && isViewDescendantOf(v, focused)) { 2809 v.requestFocus(); 2810 } 2811 } 2812 } 2813 } 2814 } 2815 2816 @Override 2817 public void recomputeViewAttributes(View child) { 2818 checkThread(); 2819 if (mView == child) { 2820 mAttachInfo.mRecomputeGlobalAttributes = true; 2821 if (!mWillDrawSoon) { 2822 scheduleTraversals(); 2823 } 2824 } 2825 } 2826 2827 void dispatchDetachedFromWindow() { 2828 if (mView != null && mView.mAttachInfo != null) { 2829 if (mAttachInfo.mHardwareRenderer != null && 2830 mAttachInfo.mHardwareRenderer.isEnabled()) { 2831 mAttachInfo.mHardwareRenderer.validate(); 2832 } 2833 mAttachInfo.mTreeObserver.dispatchOnWindowAttachedChange(false); 2834 mView.dispatchDetachedFromWindow(); 2835 } 2836 2837 mAccessibilityInteractionConnectionManager.ensureNoConnection(); 2838 mAccessibilityManager.removeAccessibilityStateChangeListener( 2839 mAccessibilityInteractionConnectionManager); 2840 removeSendWindowContentChangedCallback(); 2841 2842 destroyHardwareRenderer(); 2843 2844 setAccessibilityFocus(null, null); 2845 2846 mView.assignParent(null); 2847 mView = null; 2848 mAttachInfo.mRootView = null; 2849 mAttachInfo.mSurface = null; 2850 2851 mSurface.release(); 2852 2853 if (mInputQueueCallback != null && mInputQueue != null) { 2854 mInputQueueCallback.onInputQueueDestroyed(mInputQueue); 2855 mInputQueue.dispose(); 2856 mInputQueueCallback = null; 2857 mInputQueue = null; 2858 } 2859 if (mInputEventReceiver != null) { 2860 mInputEventReceiver.dispose(); 2861 mInputEventReceiver = null; 2862 } 2863 try { 2864 mWindowSession.remove(mWindow); 2865 } catch (RemoteException e) { 2866 } 2867 2868 // Dispose the input channel after removing the window so the Window Manager 2869 // doesn't interpret the input channel being closed as an abnormal termination. 2870 if (mInputChannel != null) { 2871 mInputChannel.dispose(); 2872 mInputChannel = null; 2873 } 2874 2875 unscheduleTraversals(); 2876 } 2877 2878 void updateConfiguration(Configuration config, boolean force) { 2879 if (DEBUG_CONFIGURATION) Log.v(TAG, 2880 "Applying new config to window " 2881 + mWindowAttributes.getTitle() 2882 + ": " + config); 2883 2884 CompatibilityInfo ci = mDisplayAdjustments.getCompatibilityInfo(); 2885 if (!ci.equals(CompatibilityInfo.DEFAULT_COMPATIBILITY_INFO)) { 2886 config = new Configuration(config); 2887 ci.applyToConfiguration(mNoncompatDensity, config); 2888 } 2889 2890 synchronized (sConfigCallbacks) { 2891 for (int i=sConfigCallbacks.size()-1; i>=0; i--) { 2892 sConfigCallbacks.get(i).onConfigurationChanged(config); 2893 } 2894 } 2895 if (mView != null) { 2896 // At this point the resources have been updated to 2897 // have the most recent config, whatever that is. Use 2898 // the one in them which may be newer. 2899 config = mView.getResources().getConfiguration(); 2900 if (force || mLastConfiguration.diff(config) != 0) { 2901 final int lastLayoutDirection = mLastConfiguration.getLayoutDirection(); 2902 final int currentLayoutDirection = config.getLayoutDirection(); 2903 mLastConfiguration.setTo(config); 2904 if (lastLayoutDirection != currentLayoutDirection && 2905 mViewLayoutDirectionInitial == View.LAYOUT_DIRECTION_INHERIT) { 2906 mView.setLayoutDirection(currentLayoutDirection); 2907 } 2908 mView.dispatchConfigurationChanged(config); 2909 } 2910 } 2911 2912 mFlipControllerFallbackKeys = 2913 mContext.getResources().getBoolean(R.bool.flip_controller_fallback_keys); 2914 } 2915 2916 /** 2917 * Return true if child is an ancestor of parent, (or equal to the parent). 2918 */ 2919 public static boolean isViewDescendantOf(View child, View parent) { 2920 if (child == parent) { 2921 return true; 2922 } 2923 2924 final ViewParent theParent = child.getParent(); 2925 return (theParent instanceof ViewGroup) && isViewDescendantOf((View) theParent, parent); 2926 } 2927 2928 private static void forceLayout(View view) { 2929 view.forceLayout(); 2930 if (view instanceof ViewGroup) { 2931 ViewGroup group = (ViewGroup) view; 2932 final int count = group.getChildCount(); 2933 for (int i = 0; i < count; i++) { 2934 forceLayout(group.getChildAt(i)); 2935 } 2936 } 2937 } 2938 2939 private final static int MSG_INVALIDATE = 1; 2940 private final static int MSG_INVALIDATE_RECT = 2; 2941 private final static int MSG_DIE = 3; 2942 private final static int MSG_RESIZED = 4; 2943 private final static int MSG_RESIZED_REPORT = 5; 2944 private final static int MSG_WINDOW_FOCUS_CHANGED = 6; 2945 private final static int MSG_DISPATCH_INPUT_EVENT = 7; 2946 private final static int MSG_DISPATCH_APP_VISIBILITY = 8; 2947 private final static int MSG_DISPATCH_GET_NEW_SURFACE = 9; 2948 private final static int MSG_DISPATCH_KEY_FROM_IME = 11; 2949 private final static int MSG_FINISH_INPUT_CONNECTION = 12; 2950 private final static int MSG_CHECK_FOCUS = 13; 2951 private final static int MSG_CLOSE_SYSTEM_DIALOGS = 14; 2952 private final static int MSG_DISPATCH_DRAG_EVENT = 15; 2953 private final static int MSG_DISPATCH_DRAG_LOCATION_EVENT = 16; 2954 private final static int MSG_DISPATCH_SYSTEM_UI_VISIBILITY = 17; 2955 private final static int MSG_UPDATE_CONFIGURATION = 18; 2956 private final static int MSG_PROCESS_INPUT_EVENTS = 19; 2957 private final static int MSG_DISPATCH_SCREEN_STATE = 20; 2958 private final static int MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST = 21; 2959 private final static int MSG_DISPATCH_DONE_ANIMATING = 22; 2960 private final static int MSG_INVALIDATE_WORLD = 23; 2961 private final static int MSG_WINDOW_MOVED = 24; 2962 private final static int MSG_FLUSH_LAYER_UPDATES = 25; 2963 2964 final class ViewRootHandler extends Handler { 2965 @Override 2966 public String getMessageName(Message message) { 2967 switch (message.what) { 2968 case MSG_INVALIDATE: 2969 return "MSG_INVALIDATE"; 2970 case MSG_INVALIDATE_RECT: 2971 return "MSG_INVALIDATE_RECT"; 2972 case MSG_DIE: 2973 return "MSG_DIE"; 2974 case MSG_RESIZED: 2975 return "MSG_RESIZED"; 2976 case MSG_RESIZED_REPORT: 2977 return "MSG_RESIZED_REPORT"; 2978 case MSG_WINDOW_FOCUS_CHANGED: 2979 return "MSG_WINDOW_FOCUS_CHANGED"; 2980 case MSG_DISPATCH_INPUT_EVENT: 2981 return "MSG_DISPATCH_INPUT_EVENT"; 2982 case MSG_DISPATCH_APP_VISIBILITY: 2983 return "MSG_DISPATCH_APP_VISIBILITY"; 2984 case MSG_DISPATCH_GET_NEW_SURFACE: 2985 return "MSG_DISPATCH_GET_NEW_SURFACE"; 2986 case MSG_DISPATCH_KEY_FROM_IME: 2987 return "MSG_DISPATCH_KEY_FROM_IME"; 2988 case MSG_FINISH_INPUT_CONNECTION: 2989 return "MSG_FINISH_INPUT_CONNECTION"; 2990 case MSG_CHECK_FOCUS: 2991 return "MSG_CHECK_FOCUS"; 2992 case MSG_CLOSE_SYSTEM_DIALOGS: 2993 return "MSG_CLOSE_SYSTEM_DIALOGS"; 2994 case MSG_DISPATCH_DRAG_EVENT: 2995 return "MSG_DISPATCH_DRAG_EVENT"; 2996 case MSG_DISPATCH_DRAG_LOCATION_EVENT: 2997 return "MSG_DISPATCH_DRAG_LOCATION_EVENT"; 2998 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: 2999 return "MSG_DISPATCH_SYSTEM_UI_VISIBILITY"; 3000 case MSG_UPDATE_CONFIGURATION: 3001 return "MSG_UPDATE_CONFIGURATION"; 3002 case MSG_PROCESS_INPUT_EVENTS: 3003 return "MSG_PROCESS_INPUT_EVENTS"; 3004 case MSG_DISPATCH_SCREEN_STATE: 3005 return "MSG_DISPATCH_SCREEN_STATE"; 3006 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: 3007 return "MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST"; 3008 case MSG_DISPATCH_DONE_ANIMATING: 3009 return "MSG_DISPATCH_DONE_ANIMATING"; 3010 case MSG_WINDOW_MOVED: 3011 return "MSG_WINDOW_MOVED"; 3012 case MSG_FLUSH_LAYER_UPDATES: 3013 return "MSG_FLUSH_LAYER_UPDATES"; 3014 } 3015 return super.getMessageName(message); 3016 } 3017 3018 @Override 3019 public void handleMessage(Message msg) { 3020 switch (msg.what) { 3021 case MSG_INVALIDATE: 3022 ((View) msg.obj).invalidate(); 3023 break; 3024 case MSG_INVALIDATE_RECT: 3025 final View.AttachInfo.InvalidateInfo info = (View.AttachInfo.InvalidateInfo) msg.obj; 3026 info.target.invalidate(info.left, info.top, info.right, info.bottom); 3027 info.recycle(); 3028 break; 3029 case MSG_PROCESS_INPUT_EVENTS: 3030 mProcessInputEventsScheduled = false; 3031 doProcessInputEvents(); 3032 break; 3033 case MSG_DISPATCH_APP_VISIBILITY: 3034 handleAppVisibility(msg.arg1 != 0); 3035 break; 3036 case MSG_DISPATCH_GET_NEW_SURFACE: 3037 handleGetNewSurface(); 3038 break; 3039 case MSG_RESIZED: { 3040 // Recycled in the fall through... 3041 SomeArgs args = (SomeArgs) msg.obj; 3042 if (mWinFrame.equals(args.arg1) 3043 && mPendingOverscanInsets.equals(args.arg5) 3044 && mPendingContentInsets.equals(args.arg2) 3045 && mPendingVisibleInsets.equals(args.arg3) 3046 && args.arg4 == null) { 3047 break; 3048 } 3049 } // fall through... 3050 case MSG_RESIZED_REPORT: 3051 if (mAdded) { 3052 SomeArgs args = (SomeArgs) msg.obj; 3053 3054 Configuration config = (Configuration) args.arg4; 3055 if (config != null) { 3056 updateConfiguration(config, false); 3057 } 3058 3059 mWinFrame.set((Rect) args.arg1); 3060 mPendingOverscanInsets.set((Rect) args.arg5); 3061 mPendingContentInsets.set((Rect) args.arg2); 3062 mPendingVisibleInsets.set((Rect) args.arg3); 3063 3064 args.recycle(); 3065 3066 if (msg.what == MSG_RESIZED_REPORT) { 3067 mReportNextDraw = true; 3068 } 3069 3070 if (mView != null) { 3071 forceLayout(mView); 3072 } 3073 3074 requestLayout(); 3075 } 3076 break; 3077 case MSG_WINDOW_MOVED: 3078 if (mAdded) { 3079 final int w = mWinFrame.width(); 3080 final int h = mWinFrame.height(); 3081 final int l = msg.arg1; 3082 final int t = msg.arg2; 3083 mWinFrame.left = l; 3084 mWinFrame.right = l + w; 3085 mWinFrame.top = t; 3086 mWinFrame.bottom = t + h; 3087 3088 if (mView != null) { 3089 forceLayout(mView); 3090 } 3091 requestLayout(); 3092 } 3093 break; 3094 case MSG_WINDOW_FOCUS_CHANGED: { 3095 if (mAdded) { 3096 boolean hasWindowFocus = msg.arg1 != 0; 3097 mAttachInfo.mHasWindowFocus = hasWindowFocus; 3098 3099 profileRendering(hasWindowFocus); 3100 3101 if (hasWindowFocus) { 3102 boolean inTouchMode = msg.arg2 != 0; 3103 ensureTouchModeLocally(inTouchMode); 3104 3105 if (mAttachInfo.mHardwareRenderer != null && mSurface.isValid()){ 3106 mFullRedrawNeeded = true; 3107 try { 3108 mAttachInfo.mHardwareRenderer.initializeIfNeeded( 3109 mWidth, mHeight, mHolder.getSurface()); 3110 } catch (OutOfResourcesException e) { 3111 Log.e(TAG, "OutOfResourcesException locking surface", e); 3112 try { 3113 if (!mWindowSession.outOfMemory(mWindow)) { 3114 Slog.w(TAG, "No processes killed for memory; killing self"); 3115 Process.killProcess(Process.myPid()); 3116 } 3117 } catch (RemoteException ex) { 3118 } 3119 // Retry in a bit. 3120 sendMessageDelayed(obtainMessage(msg.what, msg.arg1, msg.arg2), 500); 3121 return; 3122 } 3123 } 3124 } 3125 3126 mLastWasImTarget = WindowManager.LayoutParams 3127 .mayUseInputMethod(mWindowAttributes.flags); 3128 3129 InputMethodManager imm = InputMethodManager.peekInstance(); 3130 if (mView != null) { 3131 if (hasWindowFocus && imm != null && mLastWasImTarget && 3132 !isInLocalFocusMode()) { 3133 imm.startGettingWindowFocus(mView); 3134 } 3135 mAttachInfo.mKeyDispatchState.reset(); 3136 mView.dispatchWindowFocusChanged(hasWindowFocus); 3137 mAttachInfo.mTreeObserver.dispatchOnWindowFocusChange(hasWindowFocus); 3138 } 3139 3140 // Note: must be done after the focus change callbacks, 3141 // so all of the view state is set up correctly. 3142 if (hasWindowFocus) { 3143 if (imm != null && mLastWasImTarget && !isInLocalFocusMode()) { 3144 imm.onWindowFocus(mView, mView.findFocus(), 3145 mWindowAttributes.softInputMode, 3146 !mHasHadWindowFocus, mWindowAttributes.flags); 3147 } 3148 // Clear the forward bit. We can just do this directly, since 3149 // the window manager doesn't care about it. 3150 mWindowAttributes.softInputMode &= 3151 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3152 ((WindowManager.LayoutParams)mView.getLayoutParams()) 3153 .softInputMode &= 3154 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 3155 mHasHadWindowFocus = true; 3156 } 3157 3158 setAccessibilityFocus(null, null); 3159 3160 if (mView != null && mAccessibilityManager.isEnabled()) { 3161 if (hasWindowFocus) { 3162 mView.sendAccessibilityEvent( 3163 AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 3164 } 3165 } 3166 } 3167 } break; 3168 case MSG_DIE: 3169 doDie(); 3170 break; 3171 case MSG_DISPATCH_INPUT_EVENT: { 3172 InputEvent event = (InputEvent)msg.obj; 3173 enqueueInputEvent(event, null, 0, true); 3174 } break; 3175 case MSG_DISPATCH_KEY_FROM_IME: { 3176 if (LOCAL_LOGV) Log.v( 3177 TAG, "Dispatching key " 3178 + msg.obj + " from IME to " + mView); 3179 KeyEvent event = (KeyEvent)msg.obj; 3180 if ((event.getFlags()&KeyEvent.FLAG_FROM_SYSTEM) != 0) { 3181 // The IME is trying to say this event is from the 3182 // system! Bad bad bad! 3183 //noinspection UnusedAssignment 3184 event = KeyEvent.changeFlags(event, event.getFlags() & ~KeyEvent.FLAG_FROM_SYSTEM); 3185 } 3186 enqueueInputEvent(event, null, QueuedInputEvent.FLAG_DELIVER_POST_IME, true); 3187 } break; 3188 case MSG_FINISH_INPUT_CONNECTION: { 3189 InputMethodManager imm = InputMethodManager.peekInstance(); 3190 if (imm != null) { 3191 imm.reportFinishInputConnection((InputConnection)msg.obj); 3192 } 3193 } break; 3194 case MSG_CHECK_FOCUS: { 3195 InputMethodManager imm = InputMethodManager.peekInstance(); 3196 if (imm != null) { 3197 imm.checkFocus(); 3198 } 3199 } break; 3200 case MSG_CLOSE_SYSTEM_DIALOGS: { 3201 if (mView != null) { 3202 mView.onCloseSystemDialogs((String)msg.obj); 3203 } 3204 } break; 3205 case MSG_DISPATCH_DRAG_EVENT: 3206 case MSG_DISPATCH_DRAG_LOCATION_EVENT: { 3207 DragEvent event = (DragEvent)msg.obj; 3208 event.mLocalState = mLocalDragState; // only present when this app called startDrag() 3209 handleDragEvent(event); 3210 } break; 3211 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: { 3212 handleDispatchSystemUiVisibilityChanged((SystemUiVisibilityInfo) msg.obj); 3213 } break; 3214 case MSG_UPDATE_CONFIGURATION: { 3215 Configuration config = (Configuration)msg.obj; 3216 if (config.isOtherSeqNewer(mLastConfiguration)) { 3217 config = mLastConfiguration; 3218 } 3219 updateConfiguration(config, false); 3220 } break; 3221 case MSG_DISPATCH_SCREEN_STATE: { 3222 if (mView != null) { 3223 handleScreenStateChange(msg.arg1 == 1); 3224 } 3225 } break; 3226 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: { 3227 setAccessibilityFocus(null, null); 3228 } break; 3229 case MSG_DISPATCH_DONE_ANIMATING: { 3230 handleDispatchDoneAnimating(); 3231 } break; 3232 case MSG_INVALIDATE_WORLD: { 3233 if (mView != null) { 3234 invalidateWorld(mView); 3235 } 3236 } break; 3237 case MSG_FLUSH_LAYER_UPDATES: { 3238 flushHardwareLayerUpdates(); 3239 } break; 3240 } 3241 } 3242 } 3243 3244 final ViewRootHandler mHandler = new ViewRootHandler(); 3245 3246 /** 3247 * Something in the current window tells us we need to change the touch mode. For 3248 * example, we are not in touch mode, and the user touches the screen. 3249 * 3250 * If the touch mode has changed, tell the window manager, and handle it locally. 3251 * 3252 * @param inTouchMode Whether we want to be in touch mode. 3253 * @return True if the touch mode changed and focus changed was changed as a result 3254 */ 3255 boolean ensureTouchMode(boolean inTouchMode) { 3256 if (DBG) Log.d("touchmode", "ensureTouchMode(" + inTouchMode + "), current " 3257 + "touch mode is " + mAttachInfo.mInTouchMode); 3258 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3259 3260 // tell the window manager 3261 try { 3262 if (!isInLocalFocusMode()) { 3263 mWindowSession.setInTouchMode(inTouchMode); 3264 } 3265 } catch (RemoteException e) { 3266 throw new RuntimeException(e); 3267 } 3268 3269 // handle the change 3270 return ensureTouchModeLocally(inTouchMode); 3271 } 3272 3273 /** 3274 * Ensure that the touch mode for this window is set, and if it is changing, 3275 * take the appropriate action. 3276 * @param inTouchMode Whether we want to be in touch mode. 3277 * @return True if the touch mode changed and focus changed was changed as a result 3278 */ 3279 private boolean ensureTouchModeLocally(boolean inTouchMode) { 3280 if (DBG) Log.d("touchmode", "ensureTouchModeLocally(" + inTouchMode + "), current " 3281 + "touch mode is " + mAttachInfo.mInTouchMode); 3282 3283 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3284 3285 mAttachInfo.mInTouchMode = inTouchMode; 3286 mAttachInfo.mTreeObserver.dispatchOnTouchModeChanged(inTouchMode); 3287 3288 return (inTouchMode) ? enterTouchMode() : leaveTouchMode(); 3289 } 3290 3291 private boolean enterTouchMode() { 3292 if (mView != null && mView.hasFocus()) { 3293 // note: not relying on mFocusedView here because this could 3294 // be when the window is first being added, and mFocused isn't 3295 // set yet. 3296 final View focused = mView.findFocus(); 3297 if (focused != null && !focused.isFocusableInTouchMode()) { 3298 final ViewGroup ancestorToTakeFocus = findAncestorToTakeFocusInTouchMode(focused); 3299 if (ancestorToTakeFocus != null) { 3300 // there is an ancestor that wants focus after its 3301 // descendants that is focusable in touch mode.. give it 3302 // focus 3303 return ancestorToTakeFocus.requestFocus(); 3304 } else { 3305 // There's nothing to focus. Clear and propagate through the 3306 // hierarchy, but don't attempt to place new focus. 3307 focused.clearFocusInternal(true, false); 3308 return true; 3309 } 3310 } 3311 } 3312 return false; 3313 } 3314 3315 /** 3316 * Find an ancestor of focused that wants focus after its descendants and is 3317 * focusable in touch mode. 3318 * @param focused The currently focused view. 3319 * @return An appropriate view, or null if no such view exists. 3320 */ 3321 private static ViewGroup findAncestorToTakeFocusInTouchMode(View focused) { 3322 ViewParent parent = focused.getParent(); 3323 while (parent instanceof ViewGroup) { 3324 final ViewGroup vgParent = (ViewGroup) parent; 3325 if (vgParent.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 3326 && vgParent.isFocusableInTouchMode()) { 3327 return vgParent; 3328 } 3329 if (vgParent.isRootNamespace()) { 3330 return null; 3331 } else { 3332 parent = vgParent.getParent(); 3333 } 3334 } 3335 return null; 3336 } 3337 3338 private boolean leaveTouchMode() { 3339 if (mView != null) { 3340 if (mView.hasFocus()) { 3341 View focusedView = mView.findFocus(); 3342 if (!(focusedView instanceof ViewGroup)) { 3343 // some view has focus, let it keep it 3344 return false; 3345 } else if (((ViewGroup) focusedView).getDescendantFocusability() != 3346 ViewGroup.FOCUS_AFTER_DESCENDANTS) { 3347 // some view group has focus, and doesn't prefer its children 3348 // over itself for focus, so let them keep it. 3349 return false; 3350 } 3351 } 3352 3353 // find the best view to give focus to in this brave new non-touch-mode 3354 // world 3355 final View focused = focusSearch(null, View.FOCUS_DOWN); 3356 if (focused != null) { 3357 return focused.requestFocus(View.FOCUS_DOWN); 3358 } 3359 } 3360 return false; 3361 } 3362 3363 /** 3364 * Base class for implementing a stage in the chain of responsibility 3365 * for processing input events. 3366 * <p> 3367 * Events are delivered to the stage by the {@link #deliver} method. The stage 3368 * then has the choice of finishing the event or forwarding it to the next stage. 3369 * </p> 3370 */ 3371 abstract class InputStage { 3372 private final InputStage mNext; 3373 3374 protected static final int FORWARD = 0; 3375 protected static final int FINISH_HANDLED = 1; 3376 protected static final int FINISH_NOT_HANDLED = 2; 3377 3378 /** 3379 * Creates an input stage. 3380 * @param next The next stage to which events should be forwarded. 3381 */ 3382 public InputStage(InputStage next) { 3383 mNext = next; 3384 } 3385 3386 /** 3387 * Delivers an event to be processed. 3388 */ 3389 public final void deliver(QueuedInputEvent q) { 3390 if ((q.mFlags & QueuedInputEvent.FLAG_FINISHED) != 0) { 3391 forward(q); 3392 } else if (mView == null || !mAdded) { 3393 Slog.w(TAG, "Dropping event due to root view being removed: " + q.mEvent); 3394 finish(q, false); 3395 } else if (!mAttachInfo.mHasWindowFocus && 3396 !q.mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER) && 3397 !isTerminalInputEvent(q.mEvent)) { 3398 // If this is a focused event and the window doesn't currently have input focus, 3399 // then drop this event. This could be an event that came back from the previous 3400 // stage but the window has lost focus in the meantime. 3401 Slog.w(TAG, "Dropping event due to no window focus: " + q.mEvent); 3402 finish(q, false); 3403 } else { 3404 apply(q, onProcess(q)); 3405 } 3406 } 3407 3408 /** 3409 * Marks the the input event as finished then forwards it to the next stage. 3410 */ 3411 protected void finish(QueuedInputEvent q, boolean handled) { 3412 q.mFlags |= QueuedInputEvent.FLAG_FINISHED; 3413 if (handled) { 3414 q.mFlags |= QueuedInputEvent.FLAG_FINISHED_HANDLED; 3415 } 3416 forward(q); 3417 } 3418 3419 /** 3420 * Forwards the event to the next stage. 3421 */ 3422 protected void forward(QueuedInputEvent q) { 3423 onDeliverToNext(q); 3424 } 3425 3426 /** 3427 * Applies a result code from {@link #onProcess} to the specified event. 3428 */ 3429 protected void apply(QueuedInputEvent q, int result) { 3430 if (result == FORWARD) { 3431 forward(q); 3432 } else if (result == FINISH_HANDLED) { 3433 finish(q, true); 3434 } else if (result == FINISH_NOT_HANDLED) { 3435 finish(q, false); 3436 } else { 3437 throw new IllegalArgumentException("Invalid result: " + result); 3438 } 3439 } 3440 3441 /** 3442 * Called when an event is ready to be processed. 3443 * @return A result code indicating how the event was handled. 3444 */ 3445 protected int onProcess(QueuedInputEvent q) { 3446 return FORWARD; 3447 } 3448 3449 /** 3450 * Called when an event is being delivered to the next stage. 3451 */ 3452 protected void onDeliverToNext(QueuedInputEvent q) { 3453 if (mNext != null) { 3454 mNext.deliver(q); 3455 } else { 3456 finishInputEvent(q); 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 3598 /** 3599 * Delivers pre-ime input events to a native activity. 3600 * Does not support pointer events. 3601 */ 3602 final class NativePreImeInputStage extends AsyncInputStage 3603 implements InputQueue.FinishedInputEventCallback { 3604 public NativePreImeInputStage(InputStage next, String traceCounter) { 3605 super(next, traceCounter); 3606 } 3607 3608 @Override 3609 protected int onProcess(QueuedInputEvent q) { 3610 if (mInputQueue != null && q.mEvent instanceof KeyEvent) { 3611 mInputQueue.sendInputEvent(q.mEvent, q, true, this); 3612 return DEFER; 3613 } 3614 return FORWARD; 3615 } 3616 3617 @Override 3618 public void onFinishedInputEvent(Object token, boolean handled) { 3619 QueuedInputEvent q = (QueuedInputEvent)token; 3620 if (handled) { 3621 finish(q, true); 3622 return; 3623 } 3624 forward(q); 3625 } 3626 } 3627 3628 /** 3629 * Delivers pre-ime input events to the view hierarchy. 3630 * Does not support pointer events. 3631 */ 3632 final class ViewPreImeInputStage extends InputStage { 3633 public ViewPreImeInputStage(InputStage next) { 3634 super(next); 3635 } 3636 3637 @Override 3638 protected int onProcess(QueuedInputEvent q) { 3639 if (q.mEvent instanceof KeyEvent) { 3640 return processKeyEvent(q); 3641 } 3642 return FORWARD; 3643 } 3644 3645 private int processKeyEvent(QueuedInputEvent q) { 3646 final KeyEvent event = (KeyEvent)q.mEvent; 3647 if (mView.dispatchKeyEventPreIme(event)) { 3648 return FINISH_HANDLED; 3649 } 3650 return FORWARD; 3651 } 3652 } 3653 3654 /** 3655 * Delivers input events to the ime. 3656 * Does not support pointer events. 3657 */ 3658 final class ImeInputStage extends AsyncInputStage 3659 implements InputMethodManager.FinishedInputEventCallback { 3660 public ImeInputStage(InputStage next, String traceCounter) { 3661 super(next, traceCounter); 3662 } 3663 3664 @Override 3665 protected int onProcess(QueuedInputEvent q) { 3666 if (mLastWasImTarget && !isInLocalFocusMode()) { 3667 InputMethodManager imm = InputMethodManager.peekInstance(); 3668 if (imm != null) { 3669 final InputEvent event = q.mEvent; 3670 if (DEBUG_IMF) Log.v(TAG, "Sending input event to IME: " + event); 3671 int result = imm.dispatchInputEvent(event, q, this, mHandler); 3672 if (result == InputMethodManager.DISPATCH_HANDLED) { 3673 return FINISH_HANDLED; 3674 } else if (result == InputMethodManager.DISPATCH_NOT_HANDLED) { 3675 return FINISH_NOT_HANDLED; 3676 } else { 3677 return DEFER; // callback will be invoked later 3678 } 3679 } 3680 } 3681 return FORWARD; 3682 } 3683 3684 @Override 3685 public void onFinishedInputEvent(Object token, boolean handled) { 3686 QueuedInputEvent q = (QueuedInputEvent)token; 3687 if (handled) { 3688 finish(q, true); 3689 return; 3690 } 3691 forward(q); 3692 } 3693 } 3694 3695 /** 3696 * Performs early processing of post-ime input events. 3697 */ 3698 final class EarlyPostImeInputStage extends InputStage { 3699 public EarlyPostImeInputStage(InputStage next) { 3700 super(next); 3701 } 3702 3703 @Override 3704 protected int onProcess(QueuedInputEvent q) { 3705 if (q.mEvent instanceof KeyEvent) { 3706 return processKeyEvent(q); 3707 } else { 3708 final int source = q.mEvent.getSource(); 3709 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 3710 return processPointerEvent(q); 3711 } 3712 } 3713 return FORWARD; 3714 } 3715 3716 private int processKeyEvent(QueuedInputEvent q) { 3717 final KeyEvent event = (KeyEvent)q.mEvent; 3718 3719 // If the key's purpose is to exit touch mode then we consume it 3720 // and consider it handled. 3721 if (checkForLeavingTouchModeAndConsume(event)) { 3722 return FINISH_HANDLED; 3723 } 3724 3725 // Make sure the fallback event policy sees all keys that will be 3726 // delivered to the view hierarchy. 3727 mFallbackEventHandler.preDispatchKeyEvent(event); 3728 return FORWARD; 3729 } 3730 3731 private int processPointerEvent(QueuedInputEvent q) { 3732 final MotionEvent event = (MotionEvent)q.mEvent; 3733 3734 // Translate the pointer event for compatibility, if needed. 3735 if (mTranslator != null) { 3736 mTranslator.translateEventInScreenToAppWindow(event); 3737 } 3738 3739 // Enter touch mode on down or scroll. 3740 final int action = event.getAction(); 3741 if (action == MotionEvent.ACTION_DOWN || action == MotionEvent.ACTION_SCROLL) { 3742 ensureTouchMode(true); 3743 } 3744 3745 // Offset the scroll position. 3746 if (mCurScrollY != 0) { 3747 event.offsetLocation(0, mCurScrollY); 3748 } 3749 3750 // Remember the touch position for possible drag-initiation. 3751 if (event.isTouchEvent()) { 3752 mLastTouchPoint.x = event.getRawX(); 3753 mLastTouchPoint.y = event.getRawY(); 3754 } 3755 return FORWARD; 3756 } 3757 } 3758 3759 /** 3760 * Delivers post-ime input events to a native activity. 3761 */ 3762 final class NativePostImeInputStage extends AsyncInputStage 3763 implements InputQueue.FinishedInputEventCallback { 3764 public NativePostImeInputStage(InputStage next, String traceCounter) { 3765 super(next, traceCounter); 3766 } 3767 3768 @Override 3769 protected int onProcess(QueuedInputEvent q) { 3770 if (mInputQueue != null) { 3771 mInputQueue.sendInputEvent(q.mEvent, q, false, this); 3772 return DEFER; 3773 } 3774 return FORWARD; 3775 } 3776 3777 @Override 3778 public void onFinishedInputEvent(Object token, boolean handled) { 3779 QueuedInputEvent q = (QueuedInputEvent)token; 3780 if (handled) { 3781 finish(q, true); 3782 return; 3783 } 3784 forward(q); 3785 } 3786 } 3787 3788 /** 3789 * Delivers post-ime input events to the view hierarchy. 3790 */ 3791 final class ViewPostImeInputStage extends InputStage { 3792 public ViewPostImeInputStage(InputStage next) { 3793 super(next); 3794 } 3795 3796 @Override 3797 protected int onProcess(QueuedInputEvent q) { 3798 if (q.mEvent instanceof KeyEvent) { 3799 return processKeyEvent(q); 3800 } else { 3801 final int source = q.mEvent.getSource(); 3802 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 3803 return processPointerEvent(q); 3804 } else if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 3805 return processTrackballEvent(q); 3806 } else { 3807 return processGenericMotionEvent(q); 3808 } 3809 } 3810 } 3811 3812 private int processKeyEvent(QueuedInputEvent q) { 3813 final KeyEvent event = (KeyEvent)q.mEvent; 3814 3815 // Deliver the key to the view hierarchy. 3816 if (mView.dispatchKeyEvent(event)) { 3817 return FINISH_HANDLED; 3818 } 3819 3820 // If the Control modifier is held, try to interpret the key as a shortcut. 3821 if (event.getAction() == KeyEvent.ACTION_DOWN 3822 && event.isCtrlPressed() 3823 && event.getRepeatCount() == 0 3824 && !KeyEvent.isModifierKey(event.getKeyCode())) { 3825 if (mView.dispatchKeyShortcutEvent(event)) { 3826 return FINISH_HANDLED; 3827 } 3828 } 3829 3830 // Apply the fallback event policy. 3831 if (mFallbackEventHandler.dispatchKeyEvent(event)) { 3832 return FINISH_HANDLED; 3833 } 3834 3835 // Handle automatic focus changes. 3836 if (event.getAction() == KeyEvent.ACTION_DOWN) { 3837 int direction = 0; 3838 switch (event.getKeyCode()) { 3839 case KeyEvent.KEYCODE_DPAD_LEFT: 3840 if (event.hasNoModifiers()) { 3841 direction = View.FOCUS_LEFT; 3842 } 3843 break; 3844 case KeyEvent.KEYCODE_DPAD_RIGHT: 3845 if (event.hasNoModifiers()) { 3846 direction = View.FOCUS_RIGHT; 3847 } 3848 break; 3849 case KeyEvent.KEYCODE_DPAD_UP: 3850 if (event.hasNoModifiers()) { 3851 direction = View.FOCUS_UP; 3852 } 3853 break; 3854 case KeyEvent.KEYCODE_DPAD_DOWN: 3855 if (event.hasNoModifiers()) { 3856 direction = View.FOCUS_DOWN; 3857 } 3858 break; 3859 case KeyEvent.KEYCODE_TAB: 3860 if (event.hasNoModifiers()) { 3861 direction = View.FOCUS_FORWARD; 3862 } else if (event.hasModifiers(KeyEvent.META_SHIFT_ON)) { 3863 direction = View.FOCUS_BACKWARD; 3864 } 3865 break; 3866 } 3867 if (direction != 0) { 3868 View focused = mView.findFocus(); 3869 if (focused != null) { 3870 View v = focused.focusSearch(direction); 3871 if (v != null && v != focused) { 3872 // do the math the get the interesting rect 3873 // of previous focused into the coord system of 3874 // newly focused view 3875 focused.getFocusedRect(mTempRect); 3876 if (mView instanceof ViewGroup) { 3877 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 3878 focused, mTempRect); 3879 ((ViewGroup) mView).offsetRectIntoDescendantCoords( 3880 v, mTempRect); 3881 } 3882 if (v.requestFocus(direction, mTempRect)) { 3883 playSoundEffect(SoundEffectConstants 3884 .getContantForFocusDirection(direction)); 3885 return FINISH_HANDLED; 3886 } 3887 } 3888 3889 // Give the focused view a last chance to handle the dpad key. 3890 if (mView.dispatchUnhandledMove(focused, direction)) { 3891 return FINISH_HANDLED; 3892 } 3893 } else { 3894 // find the best view to give focus to in this non-touch-mode with no-focus 3895 View v = focusSearch(null, direction); 3896 if (v != null && v.requestFocus(direction)) { 3897 return FINISH_HANDLED; 3898 } 3899 } 3900 } 3901 } 3902 return FORWARD; 3903 } 3904 3905 private int processPointerEvent(QueuedInputEvent q) { 3906 final MotionEvent event = (MotionEvent)q.mEvent; 3907 3908 if (mView.dispatchPointerEvent(event)) { 3909 return FINISH_HANDLED; 3910 } 3911 return FORWARD; 3912 } 3913 3914 private int processTrackballEvent(QueuedInputEvent q) { 3915 final MotionEvent event = (MotionEvent)q.mEvent; 3916 3917 if (mView.dispatchTrackballEvent(event)) { 3918 return FINISH_HANDLED; 3919 } 3920 return FORWARD; 3921 } 3922 3923 private int processGenericMotionEvent(QueuedInputEvent q) { 3924 final MotionEvent event = (MotionEvent)q.mEvent; 3925 3926 // Deliver the event to the view. 3927 if (mView.dispatchGenericMotionEvent(event)) { 3928 return FINISH_HANDLED; 3929 } 3930 return FORWARD; 3931 } 3932 } 3933 3934 /** 3935 * Performs synthesis of new input events from unhandled input events. 3936 */ 3937 final class SyntheticInputStage extends InputStage { 3938 private final SyntheticTrackballHandler mTrackball = new SyntheticTrackballHandler(); 3939 private final SyntheticJoystickHandler mJoystick = new SyntheticJoystickHandler(); 3940 private final SyntheticTouchNavigationHandler mTouchNavigation = 3941 new SyntheticTouchNavigationHandler(); 3942 private final SyntheticKeyHandler mKeys = new SyntheticKeyHandler(); 3943 3944 public SyntheticInputStage() { 3945 super(null); 3946 } 3947 3948 @Override 3949 protected int onProcess(QueuedInputEvent q) { 3950 q.mFlags |= QueuedInputEvent.FLAG_RESYNTHESIZED; 3951 if (q.mEvent instanceof MotionEvent) { 3952 final MotionEvent event = (MotionEvent)q.mEvent; 3953 final int source = event.getSource(); 3954 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 3955 mTrackball.process(event); 3956 return FINISH_HANDLED; 3957 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 3958 mJoystick.process(event); 3959 return FINISH_HANDLED; 3960 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 3961 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 3962 mTouchNavigation.process(event); 3963 return FINISH_HANDLED; 3964 } 3965 } else if (q.mEvent instanceof KeyEvent) { 3966 if (mKeys.process((KeyEvent) q.mEvent)) { 3967 return FINISH_HANDLED; 3968 } 3969 } 3970 3971 return FORWARD; 3972 } 3973 3974 @Override 3975 protected void onDeliverToNext(QueuedInputEvent q) { 3976 if ((q.mFlags & QueuedInputEvent.FLAG_RESYNTHESIZED) == 0) { 3977 // Cancel related synthetic events if any prior stage has handled the event. 3978 if (q.mEvent instanceof MotionEvent) { 3979 final MotionEvent event = (MotionEvent)q.mEvent; 3980 final int source = event.getSource(); 3981 if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 3982 mTrackball.cancel(event); 3983 } else if ((source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0) { 3984 mJoystick.cancel(event); 3985 } else if ((source & InputDevice.SOURCE_TOUCH_NAVIGATION) 3986 == InputDevice.SOURCE_TOUCH_NAVIGATION) { 3987 mTouchNavigation.cancel(event); 3988 } 3989 } 3990 } 3991 super.onDeliverToNext(q); 3992 } 3993 } 3994 3995 /** 3996 * Creates dpad events from unhandled trackball movements. 3997 */ 3998 final class SyntheticTrackballHandler { 3999 private final TrackballAxis mX = new TrackballAxis(); 4000 private final TrackballAxis mY = new TrackballAxis(); 4001 private long mLastTime; 4002 4003 public void process(MotionEvent event) { 4004 // Translate the trackball event into DPAD keys and try to deliver those. 4005 long curTime = SystemClock.uptimeMillis(); 4006 if ((mLastTime + MAX_TRACKBALL_DELAY) < curTime) { 4007 // It has been too long since the last movement, 4008 // so restart at the beginning. 4009 mX.reset(0); 4010 mY.reset(0); 4011 mLastTime = curTime; 4012 } 4013 4014 final int action = event.getAction(); 4015 final int metaState = event.getMetaState(); 4016 switch (action) { 4017 case MotionEvent.ACTION_DOWN: 4018 mX.reset(2); 4019 mY.reset(2); 4020 enqueueInputEvent(new KeyEvent(curTime, curTime, 4021 KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 4022 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4023 InputDevice.SOURCE_KEYBOARD)); 4024 break; 4025 case MotionEvent.ACTION_UP: 4026 mX.reset(2); 4027 mY.reset(2); 4028 enqueueInputEvent(new KeyEvent(curTime, curTime, 4029 KeyEvent.ACTION_UP, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 4030 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4031 InputDevice.SOURCE_KEYBOARD)); 4032 break; 4033 } 4034 4035 if (DEBUG_TRACKBALL) Log.v(TAG, "TB X=" + mX.position + " step=" 4036 + mX.step + " dir=" + mX.dir + " acc=" + mX.acceleration 4037 + " move=" + event.getX() 4038 + " / Y=" + mY.position + " step=" 4039 + mY.step + " dir=" + mY.dir + " acc=" + mY.acceleration 4040 + " move=" + event.getY()); 4041 final float xOff = mX.collect(event.getX(), event.getEventTime(), "X"); 4042 final float yOff = mY.collect(event.getY(), event.getEventTime(), "Y"); 4043 4044 // Generate DPAD events based on the trackball movement. 4045 // We pick the axis that has moved the most as the direction of 4046 // the DPAD. When we generate DPAD events for one axis, then the 4047 // other axis is reset -- we don't want to perform DPAD jumps due 4048 // to slight movements in the trackball when making major movements 4049 // along the other axis. 4050 int keycode = 0; 4051 int movement = 0; 4052 float accel = 1; 4053 if (xOff > yOff) { 4054 movement = mX.generate(); 4055 if (movement != 0) { 4056 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_RIGHT 4057 : KeyEvent.KEYCODE_DPAD_LEFT; 4058 accel = mX.acceleration; 4059 mY.reset(2); 4060 } 4061 } else if (yOff > 0) { 4062 movement = mY.generate(); 4063 if (movement != 0) { 4064 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_DOWN 4065 : KeyEvent.KEYCODE_DPAD_UP; 4066 accel = mY.acceleration; 4067 mX.reset(2); 4068 } 4069 } 4070 4071 if (keycode != 0) { 4072 if (movement < 0) movement = -movement; 4073 int accelMovement = (int)(movement * accel); 4074 if (DEBUG_TRACKBALL) Log.v(TAG, "Move: movement=" + movement 4075 + " accelMovement=" + accelMovement 4076 + " accel=" + accel); 4077 if (accelMovement > movement) { 4078 if (DEBUG_TRACKBALL) Log.v(TAG, "Delivering fake DPAD: " 4079 + keycode); 4080 movement--; 4081 int repeatCount = accelMovement - movement; 4082 enqueueInputEvent(new KeyEvent(curTime, curTime, 4083 KeyEvent.ACTION_MULTIPLE, keycode, repeatCount, metaState, 4084 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4085 InputDevice.SOURCE_KEYBOARD)); 4086 } 4087 while (movement > 0) { 4088 if (DEBUG_TRACKBALL) Log.v(TAG, "Delivering fake DPAD: " 4089 + keycode); 4090 movement--; 4091 curTime = SystemClock.uptimeMillis(); 4092 enqueueInputEvent(new KeyEvent(curTime, curTime, 4093 KeyEvent.ACTION_DOWN, keycode, 0, metaState, 4094 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4095 InputDevice.SOURCE_KEYBOARD)); 4096 enqueueInputEvent(new KeyEvent(curTime, curTime, 4097 KeyEvent.ACTION_UP, keycode, 0, metaState, 4098 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 4099 InputDevice.SOURCE_KEYBOARD)); 4100 } 4101 mLastTime = curTime; 4102 } 4103 } 4104 4105 public void cancel(MotionEvent event) { 4106 mLastTime = Integer.MIN_VALUE; 4107 4108 // If we reach this, we consumed a trackball event. 4109 // Because we will not translate the trackball event into a key event, 4110 // touch mode will not exit, so we exit touch mode here. 4111 if (mView != null && mAdded) { 4112 ensureTouchMode(false); 4113 } 4114 } 4115 } 4116 4117 /** 4118 * Maintains state information for a single trackball axis, generating 4119 * discrete (DPAD) movements based on raw trackball motion. 4120 */ 4121 static final class TrackballAxis { 4122 /** 4123 * The maximum amount of acceleration we will apply. 4124 */ 4125 static final float MAX_ACCELERATION = 20; 4126 4127 /** 4128 * The maximum amount of time (in milliseconds) between events in order 4129 * for us to consider the user to be doing fast trackball movements, 4130 * and thus apply an acceleration. 4131 */ 4132 static final long FAST_MOVE_TIME = 150; 4133 4134 /** 4135 * Scaling factor to the time (in milliseconds) between events to how 4136 * much to multiple/divide the current acceleration. When movement 4137 * is < FAST_MOVE_TIME this multiplies the acceleration; when > 4138 * FAST_MOVE_TIME it divides it. 4139 */ 4140 static final float ACCEL_MOVE_SCALING_FACTOR = (1.0f/40); 4141 4142 static final float FIRST_MOVEMENT_THRESHOLD = 0.5f; 4143 static final float SECOND_CUMULATIVE_MOVEMENT_THRESHOLD = 2.0f; 4144 static final float SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD = 1.0f; 4145 4146 float position; 4147 float acceleration = 1; 4148 long lastMoveTime = 0; 4149 int step; 4150 int dir; 4151 int nonAccelMovement; 4152 4153 void reset(int _step) { 4154 position = 0; 4155 acceleration = 1; 4156 lastMoveTime = 0; 4157 step = _step; 4158 dir = 0; 4159 } 4160 4161 /** 4162 * Add trackball movement into the state. If the direction of movement 4163 * has been reversed, the state is reset before adding the 4164 * movement (so that you don't have to compensate for any previously 4165 * collected movement before see the result of the movement in the 4166 * new direction). 4167 * 4168 * @return Returns the absolute value of the amount of movement 4169 * collected so far. 4170 */ 4171 float collect(float off, long time, String axis) { 4172 long normTime; 4173 if (off > 0) { 4174 normTime = (long)(off * FAST_MOVE_TIME); 4175 if (dir < 0) { 4176 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to positive!"); 4177 position = 0; 4178 step = 0; 4179 acceleration = 1; 4180 lastMoveTime = 0; 4181 } 4182 dir = 1; 4183 } else if (off < 0) { 4184 normTime = (long)((-off) * FAST_MOVE_TIME); 4185 if (dir > 0) { 4186 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to negative!"); 4187 position = 0; 4188 step = 0; 4189 acceleration = 1; 4190 lastMoveTime = 0; 4191 } 4192 dir = -1; 4193 } else { 4194 normTime = 0; 4195 } 4196 4197 // The number of milliseconds between each movement that is 4198 // considered "normal" and will not result in any acceleration 4199 // or deceleration, scaled by the offset we have here. 4200 if (normTime > 0) { 4201 long delta = time - lastMoveTime; 4202 lastMoveTime = time; 4203 float acc = acceleration; 4204 if (delta < normTime) { 4205 // The user is scrolling rapidly, so increase acceleration. 4206 float scale = (normTime-delta) * ACCEL_MOVE_SCALING_FACTOR; 4207 if (scale > 1) acc *= scale; 4208 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " accelerate: off=" 4209 + off + " normTime=" + normTime + " delta=" + delta 4210 + " scale=" + scale + " acc=" + acc); 4211 acceleration = acc < MAX_ACCELERATION ? acc : MAX_ACCELERATION; 4212 } else { 4213 // The user is scrolling slowly, so decrease acceleration. 4214 float scale = (delta-normTime) * ACCEL_MOVE_SCALING_FACTOR; 4215 if (scale > 1) acc /= scale; 4216 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " deccelerate: off=" 4217 + off + " normTime=" + normTime + " delta=" + delta 4218 + " scale=" + scale + " acc=" + acc); 4219 acceleration = acc > 1 ? acc : 1; 4220 } 4221 } 4222 position += off; 4223 return Math.abs(position); 4224 } 4225 4226 /** 4227 * Generate the number of discrete movement events appropriate for 4228 * the currently collected trackball movement. 4229 * 4230 * @return Returns the number of discrete movements, either positive 4231 * or negative, or 0 if there is not enough trackball movement yet 4232 * for a discrete movement. 4233 */ 4234 int generate() { 4235 int movement = 0; 4236 nonAccelMovement = 0; 4237 do { 4238 final int dir = position >= 0 ? 1 : -1; 4239 switch (step) { 4240 // If we are going to execute the first step, then we want 4241 // to do this as soon as possible instead of waiting for 4242 // a full movement, in order to make things look responsive. 4243 case 0: 4244 if (Math.abs(position) < FIRST_MOVEMENT_THRESHOLD) { 4245 return movement; 4246 } 4247 movement += dir; 4248 nonAccelMovement += dir; 4249 step = 1; 4250 break; 4251 // If we have generated the first movement, then we need 4252 // to wait for the second complete trackball motion before 4253 // generating the second discrete movement. 4254 case 1: 4255 if (Math.abs(position) < SECOND_CUMULATIVE_MOVEMENT_THRESHOLD) { 4256 return movement; 4257 } 4258 movement += dir; 4259 nonAccelMovement += dir; 4260 position -= SECOND_CUMULATIVE_MOVEMENT_THRESHOLD * dir; 4261 step = 2; 4262 break; 4263 // After the first two, we generate discrete movements 4264 // consistently with the trackball, applying an acceleration 4265 // if the trackball is moving quickly. This is a simple 4266 // acceleration on top of what we already compute based 4267 // on how quickly the wheel is being turned, to apply 4268 // a longer increasing acceleration to continuous movement 4269 // in one direction. 4270 default: 4271 if (Math.abs(position) < SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD) { 4272 return movement; 4273 } 4274 movement += dir; 4275 position -= dir * SUBSEQUENT_INCREMENTAL_MOVEMENT_THRESHOLD; 4276 float acc = acceleration; 4277 acc *= 1.1f; 4278 acceleration = acc < MAX_ACCELERATION ? acc : acceleration; 4279 break; 4280 } 4281 } while (true); 4282 } 4283 } 4284 4285 /** 4286 * Creates dpad events from unhandled joystick movements. 4287 */ 4288 final class SyntheticJoystickHandler extends Handler { 4289 private final static int MSG_ENQUEUE_X_AXIS_KEY_REPEAT = 1; 4290 private final static int MSG_ENQUEUE_Y_AXIS_KEY_REPEAT = 2; 4291 4292 private int mLastXDirection; 4293 private int mLastYDirection; 4294 private int mLastXKeyCode; 4295 private int mLastYKeyCode; 4296 4297 public SyntheticJoystickHandler() { 4298 super(true); 4299 } 4300 4301 @Override 4302 public void handleMessage(Message msg) { 4303 switch (msg.what) { 4304 case MSG_ENQUEUE_X_AXIS_KEY_REPEAT: 4305 case MSG_ENQUEUE_Y_AXIS_KEY_REPEAT: { 4306 KeyEvent oldEvent = (KeyEvent)msg.obj; 4307 KeyEvent e = KeyEvent.changeTimeRepeat(oldEvent, 4308 SystemClock.uptimeMillis(), 4309 oldEvent.getRepeatCount() + 1); 4310 if (mAttachInfo.mHasWindowFocus) { 4311 enqueueInputEvent(e); 4312 Message m = obtainMessage(msg.what, e); 4313 m.setAsynchronous(true); 4314 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatDelay()); 4315 } 4316 } break; 4317 } 4318 } 4319 4320 public void process(MotionEvent event) { 4321 update(event, true); 4322 } 4323 4324 public void cancel(MotionEvent event) { 4325 update(event, false); 4326 } 4327 4328 private void update(MotionEvent event, boolean synthesizeNewKeys) { 4329 final long time = event.getEventTime(); 4330 final int metaState = event.getMetaState(); 4331 final int deviceId = event.getDeviceId(); 4332 final int source = event.getSource(); 4333 4334 int xDirection = joystickAxisValueToDirection( 4335 event.getAxisValue(MotionEvent.AXIS_HAT_X)); 4336 if (xDirection == 0) { 4337 xDirection = joystickAxisValueToDirection(event.getX()); 4338 } 4339 4340 int yDirection = joystickAxisValueToDirection( 4341 event.getAxisValue(MotionEvent.AXIS_HAT_Y)); 4342 if (yDirection == 0) { 4343 yDirection = joystickAxisValueToDirection(event.getY()); 4344 } 4345 4346 if (xDirection != mLastXDirection) { 4347 if (mLastXKeyCode != 0) { 4348 removeMessages(MSG_ENQUEUE_X_AXIS_KEY_REPEAT); 4349 enqueueInputEvent(new KeyEvent(time, time, 4350 KeyEvent.ACTION_UP, mLastXKeyCode, 0, metaState, 4351 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4352 mLastXKeyCode = 0; 4353 } 4354 4355 mLastXDirection = xDirection; 4356 4357 if (xDirection != 0 && synthesizeNewKeys) { 4358 mLastXKeyCode = xDirection > 0 4359 ? KeyEvent.KEYCODE_DPAD_RIGHT : KeyEvent.KEYCODE_DPAD_LEFT; 4360 final KeyEvent e = new KeyEvent(time, time, 4361 KeyEvent.ACTION_DOWN, mLastXKeyCode, 0, metaState, 4362 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4363 enqueueInputEvent(e); 4364 Message m = obtainMessage(MSG_ENQUEUE_X_AXIS_KEY_REPEAT, e); 4365 m.setAsynchronous(true); 4366 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4367 } 4368 } 4369 4370 if (yDirection != mLastYDirection) { 4371 if (mLastYKeyCode != 0) { 4372 removeMessages(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT); 4373 enqueueInputEvent(new KeyEvent(time, time, 4374 KeyEvent.ACTION_UP, mLastYKeyCode, 0, metaState, 4375 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 4376 mLastYKeyCode = 0; 4377 } 4378 4379 mLastYDirection = yDirection; 4380 4381 if (yDirection != 0 && synthesizeNewKeys) { 4382 mLastYKeyCode = yDirection > 0 4383 ? KeyEvent.KEYCODE_DPAD_DOWN : KeyEvent.KEYCODE_DPAD_UP; 4384 final KeyEvent e = new KeyEvent(time, time, 4385 KeyEvent.ACTION_DOWN, mLastYKeyCode, 0, metaState, 4386 deviceId, 0, KeyEvent.FLAG_FALLBACK, source); 4387 enqueueInputEvent(e); 4388 Message m = obtainMessage(MSG_ENQUEUE_Y_AXIS_KEY_REPEAT, e); 4389 m.setAsynchronous(true); 4390 sendMessageDelayed(m, ViewConfiguration.getKeyRepeatTimeout()); 4391 } 4392 } 4393 } 4394 4395 private int joystickAxisValueToDirection(float value) { 4396 if (value >= 0.5f) { 4397 return 1; 4398 } else if (value <= -0.5f) { 4399 return -1; 4400 } else { 4401 return 0; 4402 } 4403 } 4404 } 4405 4406 /** 4407 * Creates dpad events from unhandled touch navigation movements. 4408 */ 4409 final class SyntheticTouchNavigationHandler extends Handler { 4410 private static final String LOCAL_TAG = "SyntheticTouchNavigationHandler"; 4411 private static final boolean LOCAL_DEBUG = false; 4412 4413 // Assumed nominal width and height in millimeters of a touch navigation pad, 4414 // if no resolution information is available from the input system. 4415 private static final float DEFAULT_WIDTH_MILLIMETERS = 48; 4416 private static final float DEFAULT_HEIGHT_MILLIMETERS = 48; 4417 4418 /* TODO: These constants should eventually be moved to ViewConfiguration. */ 4419 4420 // The nominal distance traveled to move by one unit. 4421 private static final int TICK_DISTANCE_MILLIMETERS = 12; 4422 4423 // Minimum and maximum fling velocity in ticks per second. 4424 // The minimum velocity should be set such that we perform enough ticks per 4425 // second that the fling appears to be fluid. For example, if we set the minimum 4426 // to 2 ticks per second, then there may be up to half a second delay between the next 4427 // to last and last ticks which is noticeably discrete and jerky. This value should 4428 // probably not be set to anything less than about 4. 4429 // If fling accuracy is a problem then consider tuning the tick distance instead. 4430 private static final float MIN_FLING_VELOCITY_TICKS_PER_SECOND = 6f; 4431 private static final float MAX_FLING_VELOCITY_TICKS_PER_SECOND = 20f; 4432 4433 // Fling velocity decay factor applied after each new key is emitted. 4434 // This parameter controls the deceleration and overall duration of the fling. 4435 // The fling stops automatically when its velocity drops below the minimum 4436 // fling velocity defined above. 4437 private static final float FLING_TICK_DECAY = 0.8f; 4438 4439 /* The input device that we are tracking. */ 4440 4441 private int mCurrentDeviceId = -1; 4442 private int mCurrentSource; 4443 private boolean mCurrentDeviceSupported; 4444 4445 /* Configuration for the current input device. */ 4446 4447 // The scaled tick distance. A movement of this amount should generally translate 4448 // into a single dpad event in a given direction. 4449 private float mConfigTickDistance; 4450 4451 // The minimum and maximum scaled fling velocity. 4452 private float mConfigMinFlingVelocity; 4453 private float mConfigMaxFlingVelocity; 4454 4455 /* Tracking state. */ 4456 4457 // The velocity tracker for detecting flings. 4458 private VelocityTracker mVelocityTracker; 4459 4460 // The active pointer id, or -1 if none. 4461 private int mActivePointerId = -1; 4462 4463 // Time and location where tracking started. 4464 private long mStartTime; 4465 private float mStartX; 4466 private float mStartY; 4467 4468 // Most recently observed position. 4469 private float mLastX; 4470 private float mLastY; 4471 4472 // Accumulated movement delta since the last direction key was sent. 4473 private float mAccumulatedX; 4474 private float mAccumulatedY; 4475 4476 // Set to true if any movement was delivered to the app. 4477 // Implies that tap slop was exceeded. 4478 private boolean mConsumedMovement; 4479 4480 // The most recently sent key down event. 4481 // The keycode remains set until the direction changes or a fling ends 4482 // so that repeated key events may be generated as required. 4483 private long mPendingKeyDownTime; 4484 private int mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 4485 private int mPendingKeyRepeatCount; 4486 private int mPendingKeyMetaState; 4487 4488 // The current fling velocity while a fling is in progress. 4489 private boolean mFlinging; 4490 private float mFlingVelocity; 4491 4492 // The last time a confirm key was pressed on the touch nav device 4493 private long mLastConfirmKeyTime = Long.MAX_VALUE; 4494 4495 public SyntheticTouchNavigationHandler() { 4496 super(true); 4497 } 4498 4499 public void process(MotionEvent event) { 4500 // Update the current device information. 4501 final long time = event.getEventTime(); 4502 final int deviceId = event.getDeviceId(); 4503 final int source = event.getSource(); 4504 if (mCurrentDeviceId != deviceId || mCurrentSource != source) { 4505 finishKeys(time); 4506 finishTracking(time); 4507 mCurrentDeviceId = deviceId; 4508 mCurrentSource = source; 4509 mCurrentDeviceSupported = false; 4510 InputDevice device = event.getDevice(); 4511 if (device != null) { 4512 // In order to support an input device, we must know certain 4513 // characteristics about it, such as its size and resolution. 4514 InputDevice.MotionRange xRange = device.getMotionRange(MotionEvent.AXIS_X); 4515 InputDevice.MotionRange yRange = device.getMotionRange(MotionEvent.AXIS_Y); 4516 if (xRange != null && yRange != null) { 4517 mCurrentDeviceSupported = true; 4518 4519 // Infer the resolution if it not actually known. 4520 float xRes = xRange.getResolution(); 4521 if (xRes <= 0) { 4522 xRes = xRange.getRange() / DEFAULT_WIDTH_MILLIMETERS; 4523 } 4524 float yRes = yRange.getResolution(); 4525 if (yRes <= 0) { 4526 yRes = yRange.getRange() / DEFAULT_HEIGHT_MILLIMETERS; 4527 } 4528 float nominalRes = (xRes + yRes) * 0.5f; 4529 4530 // Precompute all of the configuration thresholds we will need. 4531 mConfigTickDistance = TICK_DISTANCE_MILLIMETERS * nominalRes; 4532 mConfigMinFlingVelocity = 4533 MIN_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 4534 mConfigMaxFlingVelocity = 4535 MAX_FLING_VELOCITY_TICKS_PER_SECOND * mConfigTickDistance; 4536 4537 if (LOCAL_DEBUG) { 4538 Log.d(LOCAL_TAG, "Configured device " + mCurrentDeviceId 4539 + " (" + Integer.toHexString(mCurrentSource) + "): " 4540 + ", mConfigTickDistance=" + mConfigTickDistance 4541 + ", mConfigMinFlingVelocity=" + mConfigMinFlingVelocity 4542 + ", mConfigMaxFlingVelocity=" + mConfigMaxFlingVelocity); 4543 } 4544 } 4545 } 4546 } 4547 if (!mCurrentDeviceSupported) { 4548 return; 4549 } 4550 4551 // Handle the event. 4552 final int action = event.getActionMasked(); 4553 switch (action) { 4554 case MotionEvent.ACTION_DOWN: { 4555 boolean caughtFling = mFlinging; 4556 finishKeys(time); 4557 finishTracking(time); 4558 mActivePointerId = event.getPointerId(0); 4559 mVelocityTracker = VelocityTracker.obtain(); 4560 mVelocityTracker.addMovement(event); 4561 mStartTime = time; 4562 mStartX = event.getX(); 4563 mStartY = event.getY(); 4564 mLastX = mStartX; 4565 mLastY = mStartY; 4566 mAccumulatedX = 0; 4567 mAccumulatedY = 0; 4568 4569 // If we caught a fling, then pretend that the tap slop has already 4570 // been exceeded to suppress taps whose only purpose is to stop the fling. 4571 mConsumedMovement = caughtFling; 4572 break; 4573 } 4574 4575 case MotionEvent.ACTION_MOVE: 4576 case MotionEvent.ACTION_UP: { 4577 if (mActivePointerId < 0) { 4578 break; 4579 } 4580 final int index = event.findPointerIndex(mActivePointerId); 4581 if (index < 0) { 4582 finishKeys(time); 4583 finishTracking(time); 4584 break; 4585 } 4586 4587 mVelocityTracker.addMovement(event); 4588 final float x = event.getX(index); 4589 final float y = event.getY(index); 4590 mAccumulatedX += x - mLastX; 4591 mAccumulatedY += y - mLastY; 4592 mLastX = x; 4593 mLastY = y; 4594 4595 // Consume any accumulated movement so far. 4596 final int metaState = event.getMetaState(); 4597 consumeAccumulatedMovement(time, metaState); 4598 4599 // Detect taps and flings. 4600 if (action == MotionEvent.ACTION_UP) { 4601 if (mConsumedMovement && mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 4602 // It might be a fling. 4603 mVelocityTracker.computeCurrentVelocity(1000, mConfigMaxFlingVelocity); 4604 final float vx = mVelocityTracker.getXVelocity(mActivePointerId); 4605 final float vy = mVelocityTracker.getYVelocity(mActivePointerId); 4606 if (!startFling(time, vx, vy)) { 4607 finishKeys(time); 4608 } 4609 } 4610 finishTracking(time); 4611 } 4612 break; 4613 } 4614 4615 case MotionEvent.ACTION_CANCEL: { 4616 finishKeys(time); 4617 finishTracking(time); 4618 break; 4619 } 4620 } 4621 } 4622 4623 public void cancel(MotionEvent event) { 4624 if (mCurrentDeviceId == event.getDeviceId() 4625 && mCurrentSource == event.getSource()) { 4626 final long time = event.getEventTime(); 4627 finishKeys(time); 4628 finishTracking(time); 4629 } 4630 } 4631 4632 private void finishKeys(long time) { 4633 cancelFling(); 4634 sendKeyUp(time); 4635 } 4636 4637 private void finishTracking(long time) { 4638 if (mActivePointerId >= 0) { 4639 mActivePointerId = -1; 4640 mVelocityTracker.recycle(); 4641 mVelocityTracker = null; 4642 } 4643 } 4644 4645 private void consumeAccumulatedMovement(long time, int metaState) { 4646 final float absX = Math.abs(mAccumulatedX); 4647 final float absY = Math.abs(mAccumulatedY); 4648 if (absX >= absY) { 4649 if (absX >= mConfigTickDistance) { 4650 mAccumulatedX = consumeAccumulatedMovement(time, metaState, mAccumulatedX, 4651 KeyEvent.KEYCODE_DPAD_LEFT, KeyEvent.KEYCODE_DPAD_RIGHT); 4652 mAccumulatedY = 0; 4653 mConsumedMovement = true; 4654 } 4655 } else { 4656 if (absY >= mConfigTickDistance) { 4657 mAccumulatedY = consumeAccumulatedMovement(time, metaState, mAccumulatedY, 4658 KeyEvent.KEYCODE_DPAD_UP, KeyEvent.KEYCODE_DPAD_DOWN); 4659 mAccumulatedX = 0; 4660 mConsumedMovement = true; 4661 } 4662 } 4663 } 4664 4665 private float consumeAccumulatedMovement(long time, int metaState, 4666 float accumulator, int negativeKeyCode, int positiveKeyCode) { 4667 while (accumulator <= -mConfigTickDistance) { 4668 sendKeyDownOrRepeat(time, negativeKeyCode, metaState); 4669 accumulator += mConfigTickDistance; 4670 } 4671 while (accumulator >= mConfigTickDistance) { 4672 sendKeyDownOrRepeat(time, positiveKeyCode, metaState); 4673 accumulator -= mConfigTickDistance; 4674 } 4675 return accumulator; 4676 } 4677 4678 private void sendKeyDownOrRepeat(long time, int keyCode, int metaState) { 4679 if (mPendingKeyCode != keyCode) { 4680 sendKeyUp(time); 4681 mPendingKeyDownTime = time; 4682 mPendingKeyCode = keyCode; 4683 mPendingKeyRepeatCount = 0; 4684 } else { 4685 mPendingKeyRepeatCount += 1; 4686 } 4687 mPendingKeyMetaState = metaState; 4688 4689 // Note: Normally we would pass FLAG_LONG_PRESS when the repeat count is 1 4690 // but it doesn't quite make sense when simulating the events in this way. 4691 if (LOCAL_DEBUG) { 4692 Log.d(LOCAL_TAG, "Sending key down: keyCode=" + mPendingKeyCode 4693 + ", repeatCount=" + mPendingKeyRepeatCount 4694 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 4695 } 4696 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 4697 KeyEvent.ACTION_DOWN, mPendingKeyCode, mPendingKeyRepeatCount, 4698 mPendingKeyMetaState, mCurrentDeviceId, 4699 KeyEvent.FLAG_FALLBACK, mCurrentSource)); 4700 } 4701 4702 private void sendKeyUp(long time) { 4703 if (mPendingKeyCode != KeyEvent.KEYCODE_UNKNOWN) { 4704 if (LOCAL_DEBUG) { 4705 Log.d(LOCAL_TAG, "Sending key up: keyCode=" + mPendingKeyCode 4706 + ", metaState=" + Integer.toHexString(mPendingKeyMetaState)); 4707 } 4708 enqueueInputEvent(new KeyEvent(mPendingKeyDownTime, time, 4709 KeyEvent.ACTION_UP, mPendingKeyCode, 0, mPendingKeyMetaState, 4710 mCurrentDeviceId, 0, KeyEvent.FLAG_FALLBACK, 4711 mCurrentSource)); 4712 mPendingKeyCode = KeyEvent.KEYCODE_UNKNOWN; 4713 } 4714 } 4715 4716 private boolean startFling(long time, float vx, float vy) { 4717 if (LOCAL_DEBUG) { 4718 Log.d(LOCAL_TAG, "Considering fling: vx=" + vx + ", vy=" + vy 4719 + ", min=" + mConfigMinFlingVelocity); 4720 } 4721 4722 // Flings must be oriented in the same direction as the preceding movements. 4723 switch (mPendingKeyCode) { 4724 case KeyEvent.KEYCODE_DPAD_LEFT: 4725 if (-vx >= mConfigMinFlingVelocity 4726 && Math.abs(vy) < mConfigMinFlingVelocity) { 4727 mFlingVelocity = -vx; 4728 break; 4729 } 4730 return false; 4731 4732 case KeyEvent.KEYCODE_DPAD_RIGHT: 4733 if (vx >= mConfigMinFlingVelocity 4734 && Math.abs(vy) < mConfigMinFlingVelocity) { 4735 mFlingVelocity = vx; 4736 break; 4737 } 4738 return false; 4739 4740 case KeyEvent.KEYCODE_DPAD_UP: 4741 if (-vy >= mConfigMinFlingVelocity 4742 && Math.abs(vx) < mConfigMinFlingVelocity) { 4743 mFlingVelocity = -vy; 4744 break; 4745 } 4746 return false; 4747 4748 case KeyEvent.KEYCODE_DPAD_DOWN: 4749 if (vy >= mConfigMinFlingVelocity 4750 && Math.abs(vx) < mConfigMinFlingVelocity) { 4751 mFlingVelocity = vy; 4752 break; 4753 } 4754 return false; 4755 } 4756 4757 // Post the first fling event. 4758 mFlinging = postFling(time); 4759 return mFlinging; 4760 } 4761 4762 private boolean postFling(long time) { 4763 // The idea here is to estimate the time when the pointer would have 4764 // traveled one tick distance unit given the current fling velocity. 4765 // This effect creates continuity of motion. 4766 if (mFlingVelocity >= mConfigMinFlingVelocity) { 4767 long delay = (long)(mConfigTickDistance / mFlingVelocity * 1000); 4768 postAtTime(mFlingRunnable, time + delay); 4769 if (LOCAL_DEBUG) { 4770 Log.d(LOCAL_TAG, "Posted fling: velocity=" 4771 + mFlingVelocity + ", delay=" + delay 4772 + ", keyCode=" + mPendingKeyCode); 4773 } 4774 return true; 4775 } 4776 return false; 4777 } 4778 4779 private void cancelFling() { 4780 if (mFlinging) { 4781 removeCallbacks(mFlingRunnable); 4782 mFlinging = false; 4783 } 4784 } 4785 4786 private final Runnable mFlingRunnable = new Runnable() { 4787 @Override 4788 public void run() { 4789 final long time = SystemClock.uptimeMillis(); 4790 sendKeyDownOrRepeat(time, mPendingKeyCode, mPendingKeyMetaState); 4791 mFlingVelocity *= FLING_TICK_DECAY; 4792 if (!postFling(time)) { 4793 mFlinging = false; 4794 finishKeys(time); 4795 } 4796 } 4797 }; 4798 } 4799 4800 final class SyntheticKeyHandler { 4801 4802 public boolean process(KeyEvent event) { 4803 // In some locales (like Japan) controllers use B for confirm and A for back, rather 4804 // than vice versa, so we need to special case this here since the input system itself 4805 // is not locale-aware. 4806 int keyCode; 4807 switch(event.getKeyCode()) { 4808 case KeyEvent.KEYCODE_BUTTON_A: 4809 case KeyEvent.KEYCODE_BUTTON_C: 4810 case KeyEvent.KEYCODE_BUTTON_X: 4811 case KeyEvent.KEYCODE_BUTTON_Z: 4812 keyCode = mFlipControllerFallbackKeys ? 4813 KeyEvent.KEYCODE_BACK : KeyEvent.KEYCODE_DPAD_CENTER; 4814 break; 4815 case KeyEvent.KEYCODE_BUTTON_B: 4816 case KeyEvent.KEYCODE_BUTTON_Y: 4817 keyCode = mFlipControllerFallbackKeys ? 4818 KeyEvent.KEYCODE_DPAD_CENTER : KeyEvent.KEYCODE_BACK; 4819 break; 4820 case KeyEvent.KEYCODE_BUTTON_THUMBL: 4821 case KeyEvent.KEYCODE_BUTTON_THUMBR: 4822 case KeyEvent.KEYCODE_BUTTON_START: 4823 case KeyEvent.KEYCODE_BUTTON_1: 4824 case KeyEvent.KEYCODE_BUTTON_2: 4825 case KeyEvent.KEYCODE_BUTTON_3: 4826 case KeyEvent.KEYCODE_BUTTON_4: 4827 case KeyEvent.KEYCODE_BUTTON_5: 4828 case KeyEvent.KEYCODE_BUTTON_6: 4829 case KeyEvent.KEYCODE_BUTTON_7: 4830 case KeyEvent.KEYCODE_BUTTON_8: 4831 case KeyEvent.KEYCODE_BUTTON_9: 4832 case KeyEvent.KEYCODE_BUTTON_10: 4833 case KeyEvent.KEYCODE_BUTTON_11: 4834 case KeyEvent.KEYCODE_BUTTON_12: 4835 case KeyEvent.KEYCODE_BUTTON_13: 4836 case KeyEvent.KEYCODE_BUTTON_14: 4837 case KeyEvent.KEYCODE_BUTTON_15: 4838 case KeyEvent.KEYCODE_BUTTON_16: 4839 keyCode = KeyEvent.KEYCODE_DPAD_CENTER; 4840 break; 4841 case KeyEvent.KEYCODE_BUTTON_SELECT: 4842 case KeyEvent.KEYCODE_BUTTON_MODE: 4843 keyCode = KeyEvent.KEYCODE_MENU; 4844 default: 4845 return false; 4846 } 4847 4848 enqueueInputEvent(new KeyEvent(event.getDownTime(), event.getEventTime(), 4849 event.getAction(), keyCode, event.getRepeatCount(), event.getMetaState(), 4850 event.getDeviceId(), event.getScanCode(), 4851 event.getFlags() | KeyEvent.FLAG_FALLBACK, event.getSource())); 4852 return true; 4853 } 4854 4855 } 4856 4857 /** 4858 * Returns true if the key is used for keyboard navigation. 4859 * @param keyEvent The key event. 4860 * @return True if the key is used for keyboard navigation. 4861 */ 4862 private static boolean isNavigationKey(KeyEvent keyEvent) { 4863 switch (keyEvent.getKeyCode()) { 4864 case KeyEvent.KEYCODE_DPAD_LEFT: 4865 case KeyEvent.KEYCODE_DPAD_RIGHT: 4866 case KeyEvent.KEYCODE_DPAD_UP: 4867 case KeyEvent.KEYCODE_DPAD_DOWN: 4868 case KeyEvent.KEYCODE_DPAD_CENTER: 4869 case KeyEvent.KEYCODE_PAGE_UP: 4870 case KeyEvent.KEYCODE_PAGE_DOWN: 4871 case KeyEvent.KEYCODE_MOVE_HOME: 4872 case KeyEvent.KEYCODE_MOVE_END: 4873 case KeyEvent.KEYCODE_TAB: 4874 case KeyEvent.KEYCODE_SPACE: 4875 case KeyEvent.KEYCODE_ENTER: 4876 return true; 4877 } 4878 return false; 4879 } 4880 4881 /** 4882 * Returns true if the key is used for typing. 4883 * @param keyEvent The key event. 4884 * @return True if the key is used for typing. 4885 */ 4886 private static boolean isTypingKey(KeyEvent keyEvent) { 4887 return keyEvent.getUnicodeChar() > 0; 4888 } 4889 4890 /** 4891 * See if the key event means we should leave touch mode (and leave touch mode if so). 4892 * @param event The key event. 4893 * @return Whether this key event should be consumed (meaning the act of 4894 * leaving touch mode alone is considered the event). 4895 */ 4896 private boolean checkForLeavingTouchModeAndConsume(KeyEvent event) { 4897 // Only relevant in touch mode. 4898 if (!mAttachInfo.mInTouchMode) { 4899 return false; 4900 } 4901 4902 // Only consider leaving touch mode on DOWN or MULTIPLE actions, never on UP. 4903 final int action = event.getAction(); 4904 if (action != KeyEvent.ACTION_DOWN && action != KeyEvent.ACTION_MULTIPLE) { 4905 return false; 4906 } 4907 4908 // Don't leave touch mode if the IME told us not to. 4909 if ((event.getFlags() & KeyEvent.FLAG_KEEP_TOUCH_MODE) != 0) { 4910 return false; 4911 } 4912 4913 // If the key can be used for keyboard navigation then leave touch mode 4914 // and select a focused view if needed (in ensureTouchMode). 4915 // When a new focused view is selected, we consume the navigation key because 4916 // navigation doesn't make much sense unless a view already has focus so 4917 // the key's purpose is to set focus. 4918 if (isNavigationKey(event)) { 4919 return ensureTouchMode(false); 4920 } 4921 4922 // If the key can be used for typing then leave touch mode 4923 // and select a focused view if needed (in ensureTouchMode). 4924 // Always allow the view to process the typing key. 4925 if (isTypingKey(event)) { 4926 ensureTouchMode(false); 4927 return false; 4928 } 4929 4930 return false; 4931 } 4932 4933 /* drag/drop */ 4934 void setLocalDragState(Object obj) { 4935 mLocalDragState = obj; 4936 } 4937 4938 private void handleDragEvent(DragEvent event) { 4939 // From the root, only drag start/end/location are dispatched. entered/exited 4940 // are determined and dispatched by the viewgroup hierarchy, who then report 4941 // that back here for ultimate reporting back to the framework. 4942 if (mView != null && mAdded) { 4943 final int what = event.mAction; 4944 4945 if (what == DragEvent.ACTION_DRAG_EXITED) { 4946 // A direct EXITED event means that the window manager knows we've just crossed 4947 // a window boundary, so the current drag target within this one must have 4948 // just been exited. Send it the usual notifications and then we're done 4949 // for now. 4950 mView.dispatchDragEvent(event); 4951 } else { 4952 // Cache the drag description when the operation starts, then fill it in 4953 // on subsequent calls as a convenience 4954 if (what == DragEvent.ACTION_DRAG_STARTED) { 4955 mCurrentDragView = null; // Start the current-recipient tracking 4956 mDragDescription = event.mClipDescription; 4957 } else { 4958 event.mClipDescription = mDragDescription; 4959 } 4960 4961 // For events with a [screen] location, translate into window coordinates 4962 if ((what == DragEvent.ACTION_DRAG_LOCATION) || (what == DragEvent.ACTION_DROP)) { 4963 mDragPoint.set(event.mX, event.mY); 4964 if (mTranslator != null) { 4965 mTranslator.translatePointInScreenToAppWindow(mDragPoint); 4966 } 4967 4968 if (mCurScrollY != 0) { 4969 mDragPoint.offset(0, mCurScrollY); 4970 } 4971 4972 event.mX = mDragPoint.x; 4973 event.mY = mDragPoint.y; 4974 } 4975 4976 // Remember who the current drag target is pre-dispatch 4977 final View prevDragView = mCurrentDragView; 4978 4979 // Now dispatch the drag/drop event 4980 boolean result = mView.dispatchDragEvent(event); 4981 4982 // If we changed apparent drag target, tell the OS about it 4983 if (prevDragView != mCurrentDragView) { 4984 try { 4985 if (prevDragView != null) { 4986 mWindowSession.dragRecipientExited(mWindow); 4987 } 4988 if (mCurrentDragView != null) { 4989 mWindowSession.dragRecipientEntered(mWindow); 4990 } 4991 } catch (RemoteException e) { 4992 Slog.e(TAG, "Unable to note drag target change"); 4993 } 4994 } 4995 4996 // Report the drop result when we're done 4997 if (what == DragEvent.ACTION_DROP) { 4998 mDragDescription = null; 4999 try { 5000 Log.i(TAG, "Reporting drop result: " + result); 5001 mWindowSession.reportDropResult(mWindow, result); 5002 } catch (RemoteException e) { 5003 Log.e(TAG, "Unable to report drop result"); 5004 } 5005 } 5006 5007 // When the drag operation ends, release any local state object 5008 // that may have been in use 5009 if (what == DragEvent.ACTION_DRAG_ENDED) { 5010 setLocalDragState(null); 5011 } 5012 } 5013 } 5014 event.recycle(); 5015 } 5016 5017 public void handleDispatchSystemUiVisibilityChanged(SystemUiVisibilityInfo args) { 5018 if (mSeq != args.seq) { 5019 // The sequence has changed, so we need to update our value and make 5020 // sure to do a traversal afterward so the window manager is given our 5021 // most recent data. 5022 mSeq = args.seq; 5023 mAttachInfo.mForceReportNewAttributes = true; 5024 scheduleTraversals(); 5025 } 5026 if (mView == null) return; 5027 if (args.localChanges != 0) { 5028 mView.updateLocalSystemUiVisibility(args.localValue, args.localChanges); 5029 } 5030 if (mAttachInfo != null) { 5031 int visibility = args.globalVisibility&View.SYSTEM_UI_CLEARABLE_FLAGS; 5032 if (visibility != mAttachInfo.mGlobalSystemUiVisibility) { 5033 mAttachInfo.mGlobalSystemUiVisibility = visibility; 5034 mView.dispatchSystemUiVisibilityChanged(visibility); 5035 } 5036 } 5037 } 5038 5039 public void handleDispatchDoneAnimating() { 5040 if (mWindowsAnimating) { 5041 mWindowsAnimating = false; 5042 if (!mDirty.isEmpty() || mIsAnimating || mFullRedrawNeeded) { 5043 scheduleTraversals(); 5044 } 5045 } 5046 } 5047 5048 public void getLastTouchPoint(Point outLocation) { 5049 outLocation.x = (int) mLastTouchPoint.x; 5050 outLocation.y = (int) mLastTouchPoint.y; 5051 } 5052 5053 public void setDragFocus(View newDragTarget) { 5054 if (mCurrentDragView != newDragTarget) { 5055 mCurrentDragView = newDragTarget; 5056 } 5057 } 5058 5059 private AudioManager getAudioManager() { 5060 if (mView == null) { 5061 throw new IllegalStateException("getAudioManager called when there is no mView"); 5062 } 5063 if (mAudioManager == null) { 5064 mAudioManager = (AudioManager) mView.getContext().getSystemService(Context.AUDIO_SERVICE); 5065 } 5066 return mAudioManager; 5067 } 5068 5069 public AccessibilityInteractionController getAccessibilityInteractionController() { 5070 if (mView == null) { 5071 throw new IllegalStateException("getAccessibilityInteractionController" 5072 + " called when there is no mView"); 5073 } 5074 if (mAccessibilityInteractionController == null) { 5075 mAccessibilityInteractionController = new AccessibilityInteractionController(this); 5076 } 5077 return mAccessibilityInteractionController; 5078 } 5079 5080 private int relayoutWindow(WindowManager.LayoutParams params, int viewVisibility, 5081 boolean insetsPending) throws RemoteException { 5082 5083 float appScale = mAttachInfo.mApplicationScale; 5084 boolean restore = false; 5085 if (params != null && mTranslator != null) { 5086 restore = true; 5087 params.backup(); 5088 mTranslator.translateWindowLayout(params); 5089 } 5090 if (params != null) { 5091 if (DBG) Log.d(TAG, "WindowLayout in layoutWindow:" + params); 5092 } 5093 mPendingConfiguration.seq = 0; 5094 //Log.d(TAG, ">>>>>> CALLING relayout"); 5095 if (params != null && mOrigWindowType != params.type) { 5096 // For compatibility with old apps, don't crash here. 5097 if (mTargetSdkVersion < android.os.Build.VERSION_CODES.ICE_CREAM_SANDWICH) { 5098 Slog.w(TAG, "Window type can not be changed after " 5099 + "the window is added; ignoring change of " + mView); 5100 params.type = mOrigWindowType; 5101 } 5102 } 5103 int relayoutResult = mWindowSession.relayout( 5104 mWindow, mSeq, params, 5105 (int) (mView.getMeasuredWidth() * appScale + 0.5f), 5106 (int) (mView.getMeasuredHeight() * appScale + 0.5f), 5107 viewVisibility, insetsPending ? WindowManagerGlobal.RELAYOUT_INSETS_PENDING : 0, 5108 mWinFrame, mPendingOverscanInsets, mPendingContentInsets, mPendingVisibleInsets, 5109 mPendingConfiguration, mSurface); 5110 //Log.d(TAG, "<<<<<< BACK FROM relayout"); 5111 if (restore) { 5112 params.restore(); 5113 } 5114 5115 if (mTranslator != null) { 5116 mTranslator.translateRectInScreenToAppWinFrame(mWinFrame); 5117 mTranslator.translateRectInScreenToAppWindow(mPendingOverscanInsets); 5118 mTranslator.translateRectInScreenToAppWindow(mPendingContentInsets); 5119 mTranslator.translateRectInScreenToAppWindow(mPendingVisibleInsets); 5120 } 5121 return relayoutResult; 5122 } 5123 5124 /** 5125 * {@inheritDoc} 5126 */ 5127 @Override 5128 public void playSoundEffect(int effectId) { 5129 checkThread(); 5130 5131 if (mMediaDisabled) { 5132 return; 5133 } 5134 5135 try { 5136 final AudioManager audioManager = getAudioManager(); 5137 5138 switch (effectId) { 5139 case SoundEffectConstants.CLICK: 5140 audioManager.playSoundEffect(AudioManager.FX_KEY_CLICK); 5141 return; 5142 case SoundEffectConstants.NAVIGATION_DOWN: 5143 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_DOWN); 5144 return; 5145 case SoundEffectConstants.NAVIGATION_LEFT: 5146 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_LEFT); 5147 return; 5148 case SoundEffectConstants.NAVIGATION_RIGHT: 5149 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_RIGHT); 5150 return; 5151 case SoundEffectConstants.NAVIGATION_UP: 5152 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_UP); 5153 return; 5154 default: 5155 throw new IllegalArgumentException("unknown effect id " + effectId + 5156 " not defined in " + SoundEffectConstants.class.getCanonicalName()); 5157 } 5158 } catch (IllegalStateException e) { 5159 // Exception thrown by getAudioManager() when mView is null 5160 Log.e(TAG, "FATAL EXCEPTION when attempting to play sound effect: " + e); 5161 e.printStackTrace(); 5162 } 5163 } 5164 5165 /** 5166 * {@inheritDoc} 5167 */ 5168 @Override 5169 public boolean performHapticFeedback(int effectId, boolean always) { 5170 try { 5171 return mWindowSession.performHapticFeedback(mWindow, effectId, always); 5172 } catch (RemoteException e) { 5173 return false; 5174 } 5175 } 5176 5177 /** 5178 * {@inheritDoc} 5179 */ 5180 @Override 5181 public View focusSearch(View focused, int direction) { 5182 checkThread(); 5183 if (!(mView instanceof ViewGroup)) { 5184 return null; 5185 } 5186 return FocusFinder.getInstance().findNextFocus((ViewGroup) mView, focused, direction); 5187 } 5188 5189 public void debug() { 5190 mView.debug(); 5191 } 5192 5193 public void dumpGfxInfo(int[] info) { 5194 info[0] = info[1] = 0; 5195 if (mView != null) { 5196 getGfxInfo(mView, info); 5197 } 5198 } 5199 5200 private static void getGfxInfo(View view, int[] info) { 5201 DisplayList displayList = view.mDisplayList; 5202 info[0]++; 5203 if (displayList != null) { 5204 info[1] += displayList.getSize(); 5205 } 5206 5207 if (view instanceof ViewGroup) { 5208 ViewGroup group = (ViewGroup) view; 5209 5210 int count = group.getChildCount(); 5211 for (int i = 0; i < count; i++) { 5212 getGfxInfo(group.getChildAt(i), info); 5213 } 5214 } 5215 } 5216 5217 /** 5218 * @param immediate True, do now if not in traversal. False, put on queue and do later. 5219 * @return True, request has been queued. False, request has been completed. 5220 */ 5221 boolean die(boolean immediate) { 5222 // Make sure we do execute immediately if we are in the middle of a traversal or the damage 5223 // done by dispatchDetachedFromWindow will cause havoc on return. 5224 if (immediate && !mIsInTraversal) { 5225 doDie(); 5226 return false; 5227 } 5228 5229 if (!mIsDrawing) { 5230 destroyHardwareRenderer(); 5231 } else { 5232 Log.e(TAG, "Attempting to destroy the window while drawing!\n" + 5233 " window=" + this + ", title=" + mWindowAttributes.getTitle()); 5234 } 5235 mHandler.sendEmptyMessage(MSG_DIE); 5236 return true; 5237 } 5238 5239 void doDie() { 5240 checkThread(); 5241 if (LOCAL_LOGV) Log.v(TAG, "DIE in " + this + " of " + mSurface); 5242 synchronized (this) { 5243 if (mRemoved) { 5244 return; 5245 } 5246 mRemoved = true; 5247 if (mAdded) { 5248 dispatchDetachedFromWindow(); 5249 } 5250 5251 if (mAdded && !mFirst) { 5252 invalidateDisplayLists(); 5253 destroyHardwareRenderer(); 5254 5255 if (mView != null) { 5256 int viewVisibility = mView.getVisibility(); 5257 boolean viewVisibilityChanged = mViewVisibility != viewVisibility; 5258 if (mWindowAttributesChanged || viewVisibilityChanged) { 5259 // If layout params have been changed, first give them 5260 // to the window manager to make sure it has the correct 5261 // animation info. 5262 try { 5263 if ((relayoutWindow(mWindowAttributes, viewVisibility, false) 5264 & WindowManagerGlobal.RELAYOUT_RES_FIRST_TIME) != 0) { 5265 mWindowSession.finishDrawing(mWindow); 5266 } 5267 } catch (RemoteException e) { 5268 } 5269 } 5270 5271 mSurface.release(); 5272 } 5273 } 5274 5275 mAdded = false; 5276 } 5277 WindowManagerGlobal.getInstance().doRemoveView(this); 5278 } 5279 5280 public void requestUpdateConfiguration(Configuration config) { 5281 Message msg = mHandler.obtainMessage(MSG_UPDATE_CONFIGURATION, config); 5282 mHandler.sendMessage(msg); 5283 } 5284 5285 public void loadSystemProperties() { 5286 mHandler.post(new Runnable() { 5287 @Override 5288 public void run() { 5289 // Profiling 5290 mProfileRendering = SystemProperties.getBoolean(PROPERTY_PROFILE_RENDERING, false); 5291 profileRendering(mAttachInfo.mHasWindowFocus); 5292 5293 // Media (used by sound effects) 5294 mMediaDisabled = SystemProperties.getBoolean(PROPERTY_MEDIA_DISABLED, false); 5295 5296 // Hardware rendering 5297 if (mAttachInfo.mHardwareRenderer != null) { 5298 if (mAttachInfo.mHardwareRenderer.loadSystemProperties(mHolder.getSurface())) { 5299 invalidate(); 5300 } 5301 } 5302 5303 // Layout debugging 5304 boolean layout = SystemProperties.getBoolean(View.DEBUG_LAYOUT_PROPERTY, false); 5305 if (layout != mAttachInfo.mDebugLayout) { 5306 mAttachInfo.mDebugLayout = layout; 5307 if (!mHandler.hasMessages(MSG_INVALIDATE_WORLD)) { 5308 mHandler.sendEmptyMessageDelayed(MSG_INVALIDATE_WORLD, 200); 5309 } 5310 } 5311 } 5312 }); 5313 } 5314 5315 private void destroyHardwareRenderer() { 5316 AttachInfo attachInfo = mAttachInfo; 5317 HardwareRenderer hardwareRenderer = attachInfo.mHardwareRenderer; 5318 5319 if (hardwareRenderer != null) { 5320 if (mView != null) { 5321 hardwareRenderer.destroyHardwareResources(mView); 5322 } 5323 hardwareRenderer.destroy(true); 5324 hardwareRenderer.setRequested(false); 5325 5326 attachInfo.mHardwareRenderer = null; 5327 attachInfo.mHardwareAccelerated = false; 5328 } 5329 } 5330 5331 public void dispatchFinishInputConnection(InputConnection connection) { 5332 Message msg = mHandler.obtainMessage(MSG_FINISH_INPUT_CONNECTION, connection); 5333 mHandler.sendMessage(msg); 5334 } 5335 5336 public void dispatchResized(Rect frame, Rect overscanInsets, Rect contentInsets, 5337 Rect visibleInsets, boolean reportDraw, Configuration newConfig) { 5338 if (DEBUG_LAYOUT) Log.v(TAG, "Resizing " + this + ": frame=" + frame.toShortString() 5339 + " contentInsets=" + contentInsets.toShortString() 5340 + " visibleInsets=" + visibleInsets.toShortString() 5341 + " reportDraw=" + reportDraw); 5342 Message msg = mHandler.obtainMessage(reportDraw ? MSG_RESIZED_REPORT : MSG_RESIZED); 5343 if (mTranslator != null) { 5344 mTranslator.translateRectInScreenToAppWindow(frame); 5345 mTranslator.translateRectInScreenToAppWindow(overscanInsets); 5346 mTranslator.translateRectInScreenToAppWindow(contentInsets); 5347 mTranslator.translateRectInScreenToAppWindow(visibleInsets); 5348 } 5349 SomeArgs args = SomeArgs.obtain(); 5350 final boolean sameProcessCall = (Binder.getCallingPid() == android.os.Process.myPid()); 5351 args.arg1 = sameProcessCall ? new Rect(frame) : frame; 5352 args.arg2 = sameProcessCall ? new Rect(contentInsets) : contentInsets; 5353 args.arg3 = sameProcessCall ? new Rect(visibleInsets) : visibleInsets; 5354 args.arg4 = sameProcessCall && newConfig != null ? new Configuration(newConfig) : newConfig; 5355 args.arg5 = sameProcessCall ? new Rect(overscanInsets) : overscanInsets; 5356 msg.obj = args; 5357 mHandler.sendMessage(msg); 5358 } 5359 5360 public void dispatchMoved(int newX, int newY) { 5361 if (DEBUG_LAYOUT) Log.v(TAG, "Window moved " + this + ": newX=" + newX + " newY=" + newY); 5362 if (mTranslator != null) { 5363 PointF point = new PointF(newX, newY); 5364 mTranslator.translatePointInScreenToAppWindow(point); 5365 newX = (int) (point.x + 0.5); 5366 newY = (int) (point.y + 0.5); 5367 } 5368 Message msg = mHandler.obtainMessage(MSG_WINDOW_MOVED, newX, newY); 5369 mHandler.sendMessage(msg); 5370 } 5371 5372 /** 5373 * Represents a pending input event that is waiting in a queue. 5374 * 5375 * Input events are processed in serial order by the timestamp specified by 5376 * {@link InputEvent#getEventTimeNano()}. In general, the input dispatcher delivers 5377 * one input event to the application at a time and waits for the application 5378 * to finish handling it before delivering the next one. 5379 * 5380 * However, because the application or IME can synthesize and inject multiple 5381 * key events at a time without going through the input dispatcher, we end up 5382 * needing a queue on the application's side. 5383 */ 5384 private static final class QueuedInputEvent { 5385 public static final int FLAG_DELIVER_POST_IME = 1 << 0; 5386 public static final int FLAG_DEFERRED = 1 << 1; 5387 public static final int FLAG_FINISHED = 1 << 2; 5388 public static final int FLAG_FINISHED_HANDLED = 1 << 3; 5389 public static final int FLAG_RESYNTHESIZED = 1 << 4; 5390 5391 public QueuedInputEvent mNext; 5392 5393 public InputEvent mEvent; 5394 public InputEventReceiver mReceiver; 5395 public int mFlags; 5396 5397 public boolean shouldSkipIme() { 5398 if ((mFlags & FLAG_DELIVER_POST_IME) != 0) { 5399 return true; 5400 } 5401 return mEvent instanceof MotionEvent 5402 && mEvent.isFromSource(InputDevice.SOURCE_CLASS_POINTER); 5403 } 5404 } 5405 5406 private QueuedInputEvent obtainQueuedInputEvent(InputEvent event, 5407 InputEventReceiver receiver, int flags) { 5408 QueuedInputEvent q = mQueuedInputEventPool; 5409 if (q != null) { 5410 mQueuedInputEventPoolSize -= 1; 5411 mQueuedInputEventPool = q.mNext; 5412 q.mNext = null; 5413 } else { 5414 q = new QueuedInputEvent(); 5415 } 5416 5417 q.mEvent = event; 5418 q.mReceiver = receiver; 5419 q.mFlags = flags; 5420 return q; 5421 } 5422 5423 private void recycleQueuedInputEvent(QueuedInputEvent q) { 5424 q.mEvent = null; 5425 q.mReceiver = null; 5426 5427 if (mQueuedInputEventPoolSize < MAX_QUEUED_INPUT_EVENT_POOL_SIZE) { 5428 mQueuedInputEventPoolSize += 1; 5429 q.mNext = mQueuedInputEventPool; 5430 mQueuedInputEventPool = q; 5431 } 5432 } 5433 5434 void enqueueInputEvent(InputEvent event) { 5435 enqueueInputEvent(event, null, 0, false); 5436 } 5437 5438 void enqueueInputEvent(InputEvent event, 5439 InputEventReceiver receiver, int flags, boolean processImmediately) { 5440 QueuedInputEvent q = obtainQueuedInputEvent(event, receiver, flags); 5441 5442 // Always enqueue the input event in order, regardless of its time stamp. 5443 // We do this because the application or the IME may inject key events 5444 // in response to touch events and we want to ensure that the injected keys 5445 // are processed in the order they were received and we cannot trust that 5446 // the time stamp of injected events are monotonic. 5447 QueuedInputEvent last = mPendingInputEventTail; 5448 if (last == null) { 5449 mPendingInputEventHead = q; 5450 mPendingInputEventTail = q; 5451 } else { 5452 last.mNext = q; 5453 mPendingInputEventTail = q; 5454 } 5455 mPendingInputEventCount += 1; 5456 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 5457 mPendingInputEventCount); 5458 5459 if (processImmediately) { 5460 doProcessInputEvents(); 5461 } else { 5462 scheduleProcessInputEvents(); 5463 } 5464 } 5465 5466 private void scheduleProcessInputEvents() { 5467 if (!mProcessInputEventsScheduled) { 5468 mProcessInputEventsScheduled = true; 5469 Message msg = mHandler.obtainMessage(MSG_PROCESS_INPUT_EVENTS); 5470 msg.setAsynchronous(true); 5471 mHandler.sendMessage(msg); 5472 } 5473 } 5474 5475 void doProcessInputEvents() { 5476 // Deliver all pending input events in the queue. 5477 while (mPendingInputEventHead != null) { 5478 QueuedInputEvent q = mPendingInputEventHead; 5479 mPendingInputEventHead = q.mNext; 5480 if (mPendingInputEventHead == null) { 5481 mPendingInputEventTail = null; 5482 } 5483 q.mNext = null; 5484 5485 mPendingInputEventCount -= 1; 5486 Trace.traceCounter(Trace.TRACE_TAG_INPUT, mPendingInputEventQueueLengthCounterName, 5487 mPendingInputEventCount); 5488 5489 deliverInputEvent(q); 5490 } 5491 5492 // We are done processing all input events that we can process right now 5493 // so we can clear the pending flag immediately. 5494 if (mProcessInputEventsScheduled) { 5495 mProcessInputEventsScheduled = false; 5496 mHandler.removeMessages(MSG_PROCESS_INPUT_EVENTS); 5497 } 5498 } 5499 5500 private void deliverInputEvent(QueuedInputEvent q) { 5501 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "deliverInputEvent"); 5502 try { 5503 if (mInputEventConsistencyVerifier != null) { 5504 mInputEventConsistencyVerifier.onInputEvent(q.mEvent, 0); 5505 } 5506 5507 InputStage stage = q.shouldSkipIme() ? mFirstPostImeInputStage : mFirstInputStage; 5508 if (stage != null) { 5509 stage.deliver(q); 5510 } else { 5511 finishInputEvent(q); 5512 } 5513 } finally { 5514 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 5515 } 5516 } 5517 5518 private void finishInputEvent(QueuedInputEvent q) { 5519 if (q.mReceiver != null) { 5520 boolean handled = (q.mFlags & QueuedInputEvent.FLAG_FINISHED_HANDLED) != 0; 5521 q.mReceiver.finishInputEvent(q.mEvent, handled); 5522 } else { 5523 q.mEvent.recycleIfNeededAfterDispatch(); 5524 } 5525 5526 recycleQueuedInputEvent(q); 5527 } 5528 5529 static boolean isTerminalInputEvent(InputEvent event) { 5530 if (event instanceof KeyEvent) { 5531 final KeyEvent keyEvent = (KeyEvent)event; 5532 return keyEvent.getAction() == KeyEvent.ACTION_UP; 5533 } else { 5534 final MotionEvent motionEvent = (MotionEvent)event; 5535 final int action = motionEvent.getAction(); 5536 return action == MotionEvent.ACTION_UP 5537 || action == MotionEvent.ACTION_CANCEL 5538 || action == MotionEvent.ACTION_HOVER_EXIT; 5539 } 5540 } 5541 5542 void scheduleConsumeBatchedInput() { 5543 if (!mConsumeBatchedInputScheduled) { 5544 mConsumeBatchedInputScheduled = true; 5545 mChoreographer.postCallback(Choreographer.CALLBACK_INPUT, 5546 mConsumedBatchedInputRunnable, null); 5547 } 5548 } 5549 5550 void unscheduleConsumeBatchedInput() { 5551 if (mConsumeBatchedInputScheduled) { 5552 mConsumeBatchedInputScheduled = false; 5553 mChoreographer.removeCallbacks(Choreographer.CALLBACK_INPUT, 5554 mConsumedBatchedInputRunnable, null); 5555 } 5556 } 5557 5558 void doConsumeBatchedInput(long frameTimeNanos) { 5559 if (mConsumeBatchedInputScheduled) { 5560 mConsumeBatchedInputScheduled = false; 5561 if (mInputEventReceiver != null) { 5562 mInputEventReceiver.consumeBatchedInputEvents(frameTimeNanos); 5563 } 5564 doProcessInputEvents(); 5565 } 5566 } 5567 5568 final class TraversalRunnable implements Runnable { 5569 @Override 5570 public void run() { 5571 doTraversal(); 5572 } 5573 } 5574 final TraversalRunnable mTraversalRunnable = new TraversalRunnable(); 5575 5576 final class WindowInputEventReceiver extends InputEventReceiver { 5577 public WindowInputEventReceiver(InputChannel inputChannel, Looper looper) { 5578 super(inputChannel, looper); 5579 } 5580 5581 @Override 5582 public void onInputEvent(InputEvent event) { 5583 enqueueInputEvent(event, this, 0, true); 5584 } 5585 5586 @Override 5587 public void onBatchedInputEventPending() { 5588 scheduleConsumeBatchedInput(); 5589 } 5590 5591 @Override 5592 public void dispose() { 5593 unscheduleConsumeBatchedInput(); 5594 super.dispose(); 5595 } 5596 } 5597 WindowInputEventReceiver mInputEventReceiver; 5598 5599 final class ConsumeBatchedInputRunnable implements Runnable { 5600 @Override 5601 public void run() { 5602 doConsumeBatchedInput(mChoreographer.getFrameTimeNanos()); 5603 } 5604 } 5605 final ConsumeBatchedInputRunnable mConsumedBatchedInputRunnable = 5606 new ConsumeBatchedInputRunnable(); 5607 boolean mConsumeBatchedInputScheduled; 5608 5609 final class InvalidateOnAnimationRunnable implements Runnable { 5610 private boolean mPosted; 5611 private final ArrayList<View> mViews = new ArrayList<View>(); 5612 private final ArrayList<AttachInfo.InvalidateInfo> mViewRects = 5613 new ArrayList<AttachInfo.InvalidateInfo>(); 5614 private View[] mTempViews; 5615 private AttachInfo.InvalidateInfo[] mTempViewRects; 5616 5617 public void addView(View view) { 5618 synchronized (this) { 5619 mViews.add(view); 5620 postIfNeededLocked(); 5621 } 5622 } 5623 5624 public void addViewRect(AttachInfo.InvalidateInfo info) { 5625 synchronized (this) { 5626 mViewRects.add(info); 5627 postIfNeededLocked(); 5628 } 5629 } 5630 5631 public void removeView(View view) { 5632 synchronized (this) { 5633 mViews.remove(view); 5634 5635 for (int i = mViewRects.size(); i-- > 0; ) { 5636 AttachInfo.InvalidateInfo info = mViewRects.get(i); 5637 if (info.target == view) { 5638 mViewRects.remove(i); 5639 info.recycle(); 5640 } 5641 } 5642 5643 if (mPosted && mViews.isEmpty() && mViewRects.isEmpty()) { 5644 mChoreographer.removeCallbacks(Choreographer.CALLBACK_ANIMATION, this, null); 5645 mPosted = false; 5646 } 5647 } 5648 } 5649 5650 @Override 5651 public void run() { 5652 final int viewCount; 5653 final int viewRectCount; 5654 synchronized (this) { 5655 mPosted = false; 5656 5657 viewCount = mViews.size(); 5658 if (viewCount != 0) { 5659 mTempViews = mViews.toArray(mTempViews != null 5660 ? mTempViews : new View[viewCount]); 5661 mViews.clear(); 5662 } 5663 5664 viewRectCount = mViewRects.size(); 5665 if (viewRectCount != 0) { 5666 mTempViewRects = mViewRects.toArray(mTempViewRects != null 5667 ? mTempViewRects : new AttachInfo.InvalidateInfo[viewRectCount]); 5668 mViewRects.clear(); 5669 } 5670 } 5671 5672 for (int i = 0; i < viewCount; i++) { 5673 mTempViews[i].invalidate(); 5674 mTempViews[i] = null; 5675 } 5676 5677 for (int i = 0; i < viewRectCount; i++) { 5678 final View.AttachInfo.InvalidateInfo info = mTempViewRects[i]; 5679 info.target.invalidate(info.left, info.top, info.right, info.bottom); 5680 info.recycle(); 5681 } 5682 } 5683 5684 private void postIfNeededLocked() { 5685 if (!mPosted) { 5686 mChoreographer.postCallback(Choreographer.CALLBACK_ANIMATION, this, null); 5687 mPosted = true; 5688 } 5689 } 5690 } 5691 final InvalidateOnAnimationRunnable mInvalidateOnAnimationRunnable = 5692 new InvalidateOnAnimationRunnable(); 5693 5694 public void dispatchInvalidateDelayed(View view, long delayMilliseconds) { 5695 Message msg = mHandler.obtainMessage(MSG_INVALIDATE, view); 5696 mHandler.sendMessageDelayed(msg, delayMilliseconds); 5697 } 5698 5699 public void dispatchInvalidateRectDelayed(AttachInfo.InvalidateInfo info, 5700 long delayMilliseconds) { 5701 final Message msg = mHandler.obtainMessage(MSG_INVALIDATE_RECT, info); 5702 mHandler.sendMessageDelayed(msg, delayMilliseconds); 5703 } 5704 5705 public void dispatchInvalidateOnAnimation(View view) { 5706 mInvalidateOnAnimationRunnable.addView(view); 5707 } 5708 5709 public void dispatchInvalidateRectOnAnimation(AttachInfo.InvalidateInfo info) { 5710 mInvalidateOnAnimationRunnable.addViewRect(info); 5711 } 5712 5713 public void enqueueDisplayList(DisplayList displayList) { 5714 mDisplayLists.add(displayList); 5715 } 5716 5717 public void cancelInvalidate(View view) { 5718 mHandler.removeMessages(MSG_INVALIDATE, view); 5719 // fixme: might leak the AttachInfo.InvalidateInfo objects instead of returning 5720 // them to the pool 5721 mHandler.removeMessages(MSG_INVALIDATE_RECT, view); 5722 mInvalidateOnAnimationRunnable.removeView(view); 5723 } 5724 5725 public void dispatchInputEvent(InputEvent event) { 5726 Message msg = mHandler.obtainMessage(MSG_DISPATCH_INPUT_EVENT, event); 5727 msg.setAsynchronous(true); 5728 mHandler.sendMessage(msg); 5729 } 5730 5731 public void dispatchKeyFromIme(KeyEvent event) { 5732 Message msg = mHandler.obtainMessage(MSG_DISPATCH_KEY_FROM_IME, event); 5733 msg.setAsynchronous(true); 5734 mHandler.sendMessage(msg); 5735 } 5736 5737 public void dispatchUnhandledKey(KeyEvent event) { 5738 if ((event.getFlags() & KeyEvent.FLAG_FALLBACK) == 0) { 5739 final KeyCharacterMap kcm = event.getKeyCharacterMap(); 5740 final int keyCode = event.getKeyCode(); 5741 final int metaState = event.getMetaState(); 5742 5743 // Check for fallback actions specified by the key character map. 5744 KeyCharacterMap.FallbackAction fallbackAction = 5745 kcm.getFallbackAction(keyCode, metaState); 5746 if (fallbackAction != null) { 5747 final int flags = event.getFlags() | KeyEvent.FLAG_FALLBACK; 5748 KeyEvent fallbackEvent = KeyEvent.obtain( 5749 event.getDownTime(), event.getEventTime(), 5750 event.getAction(), fallbackAction.keyCode, 5751 event.getRepeatCount(), fallbackAction.metaState, 5752 event.getDeviceId(), event.getScanCode(), 5753 flags, event.getSource(), null); 5754 fallbackAction.recycle(); 5755 5756 dispatchInputEvent(fallbackEvent); 5757 } 5758 } 5759 } 5760 5761 public void dispatchAppVisibility(boolean visible) { 5762 Message msg = mHandler.obtainMessage(MSG_DISPATCH_APP_VISIBILITY); 5763 msg.arg1 = visible ? 1 : 0; 5764 mHandler.sendMessage(msg); 5765 } 5766 5767 public void dispatchScreenStateChange(boolean on) { 5768 Message msg = mHandler.obtainMessage(MSG_DISPATCH_SCREEN_STATE); 5769 msg.arg1 = on ? 1 : 0; 5770 mHandler.sendMessage(msg); 5771 } 5772 5773 public void dispatchGetNewSurface() { 5774 Message msg = mHandler.obtainMessage(MSG_DISPATCH_GET_NEW_SURFACE); 5775 mHandler.sendMessage(msg); 5776 } 5777 5778 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 5779 Message msg = Message.obtain(); 5780 msg.what = MSG_WINDOW_FOCUS_CHANGED; 5781 msg.arg1 = hasFocus ? 1 : 0; 5782 msg.arg2 = inTouchMode ? 1 : 0; 5783 mHandler.sendMessage(msg); 5784 } 5785 5786 public void dispatchCloseSystemDialogs(String reason) { 5787 Message msg = Message.obtain(); 5788 msg.what = MSG_CLOSE_SYSTEM_DIALOGS; 5789 msg.obj = reason; 5790 mHandler.sendMessage(msg); 5791 } 5792 5793 public void dispatchDragEvent(DragEvent event) { 5794 final int what; 5795 if (event.getAction() == DragEvent.ACTION_DRAG_LOCATION) { 5796 what = MSG_DISPATCH_DRAG_LOCATION_EVENT; 5797 mHandler.removeMessages(what); 5798 } else { 5799 what = MSG_DISPATCH_DRAG_EVENT; 5800 } 5801 Message msg = mHandler.obtainMessage(what, event); 5802 mHandler.sendMessage(msg); 5803 } 5804 5805 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 5806 int localValue, int localChanges) { 5807 SystemUiVisibilityInfo args = new SystemUiVisibilityInfo(); 5808 args.seq = seq; 5809 args.globalVisibility = globalVisibility; 5810 args.localValue = localValue; 5811 args.localChanges = localChanges; 5812 mHandler.sendMessage(mHandler.obtainMessage(MSG_DISPATCH_SYSTEM_UI_VISIBILITY, args)); 5813 } 5814 5815 public void dispatchDoneAnimating() { 5816 mHandler.sendEmptyMessage(MSG_DISPATCH_DONE_ANIMATING); 5817 } 5818 5819 public void dispatchCheckFocus() { 5820 if (!mHandler.hasMessages(MSG_CHECK_FOCUS)) { 5821 // This will result in a call to checkFocus() below. 5822 mHandler.sendEmptyMessage(MSG_CHECK_FOCUS); 5823 } 5824 } 5825 5826 /** 5827 * Post a callback to send a 5828 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 5829 * This event is send at most once every 5830 * {@link ViewConfiguration#getSendRecurringAccessibilityEventsInterval()}. 5831 */ 5832 private void postSendWindowContentChangedCallback(View source, int changeType) { 5833 if (mSendWindowContentChangedAccessibilityEvent == null) { 5834 mSendWindowContentChangedAccessibilityEvent = 5835 new SendWindowContentChangedAccessibilityEvent(); 5836 } 5837 mSendWindowContentChangedAccessibilityEvent.runOrPost(source, changeType); 5838 } 5839 5840 /** 5841 * Remove a posted callback to send a 5842 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 5843 */ 5844 private void removeSendWindowContentChangedCallback() { 5845 if (mSendWindowContentChangedAccessibilityEvent != null) { 5846 mHandler.removeCallbacks(mSendWindowContentChangedAccessibilityEvent); 5847 } 5848 } 5849 5850 @Override 5851 public boolean showContextMenuForChild(View originalView) { 5852 return false; 5853 } 5854 5855 @Override 5856 public ActionMode startActionModeForChild(View originalView, ActionMode.Callback callback) { 5857 return null; 5858 } 5859 5860 @Override 5861 public void createContextMenu(ContextMenu menu) { 5862 } 5863 5864 @Override 5865 public void childDrawableStateChanged(View child) { 5866 } 5867 5868 @Override 5869 public boolean requestSendAccessibilityEvent(View child, AccessibilityEvent event) { 5870 if (mView == null) { 5871 return false; 5872 } 5873 // Intercept accessibility focus events fired by virtual nodes to keep 5874 // track of accessibility focus position in such nodes. 5875 final int eventType = event.getEventType(); 5876 switch (eventType) { 5877 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUSED: { 5878 final long sourceNodeId = event.getSourceNodeId(); 5879 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 5880 sourceNodeId); 5881 View source = mView.findViewByAccessibilityId(accessibilityViewId); 5882 if (source != null) { 5883 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 5884 if (provider != null) { 5885 AccessibilityNodeInfo node = provider.createAccessibilityNodeInfo( 5886 AccessibilityNodeInfo.getVirtualDescendantId(sourceNodeId)); 5887 setAccessibilityFocus(source, node); 5888 } 5889 } 5890 } break; 5891 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUS_CLEARED: { 5892 final long sourceNodeId = event.getSourceNodeId(); 5893 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 5894 sourceNodeId); 5895 View source = mView.findViewByAccessibilityId(accessibilityViewId); 5896 if (source != null) { 5897 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 5898 if (provider != null) { 5899 setAccessibilityFocus(null, null); 5900 } 5901 } 5902 } break; 5903 } 5904 mAccessibilityManager.sendAccessibilityEvent(event); 5905 return true; 5906 } 5907 5908 @Override 5909 public void notifySubtreeAccessibilityStateChanged(View child, View source, int changeType) { 5910 postSendWindowContentChangedCallback(source, changeType); 5911 } 5912 5913 @Override 5914 public boolean canResolveLayoutDirection() { 5915 return true; 5916 } 5917 5918 @Override 5919 public boolean isLayoutDirectionResolved() { 5920 return true; 5921 } 5922 5923 @Override 5924 public int getLayoutDirection() { 5925 return View.LAYOUT_DIRECTION_RESOLVED_DEFAULT; 5926 } 5927 5928 @Override 5929 public boolean canResolveTextDirection() { 5930 return true; 5931 } 5932 5933 @Override 5934 public boolean isTextDirectionResolved() { 5935 return true; 5936 } 5937 5938 @Override 5939 public int getTextDirection() { 5940 return View.TEXT_DIRECTION_RESOLVED_DEFAULT; 5941 } 5942 5943 @Override 5944 public boolean canResolveTextAlignment() { 5945 return true; 5946 } 5947 5948 @Override 5949 public boolean isTextAlignmentResolved() { 5950 return true; 5951 } 5952 5953 @Override 5954 public int getTextAlignment() { 5955 return View.TEXT_ALIGNMENT_RESOLVED_DEFAULT; 5956 } 5957 5958 private View getCommonPredecessor(View first, View second) { 5959 if (mAttachInfo != null) { 5960 if (mTempHashSet == null) { 5961 mTempHashSet = new HashSet<View>(); 5962 } 5963 HashSet<View> seen = mTempHashSet; 5964 seen.clear(); 5965 View firstCurrent = first; 5966 while (firstCurrent != null) { 5967 seen.add(firstCurrent); 5968 ViewParent firstCurrentParent = firstCurrent.mParent; 5969 if (firstCurrentParent instanceof View) { 5970 firstCurrent = (View) firstCurrentParent; 5971 } else { 5972 firstCurrent = null; 5973 } 5974 } 5975 View secondCurrent = second; 5976 while (secondCurrent != null) { 5977 if (seen.contains(secondCurrent)) { 5978 seen.clear(); 5979 return secondCurrent; 5980 } 5981 ViewParent secondCurrentParent = secondCurrent.mParent; 5982 if (secondCurrentParent instanceof View) { 5983 secondCurrent = (View) secondCurrentParent; 5984 } else { 5985 secondCurrent = null; 5986 } 5987 } 5988 seen.clear(); 5989 } 5990 return null; 5991 } 5992 5993 void checkThread() { 5994 if (mThread != Thread.currentThread()) { 5995 throw new CalledFromWrongThreadException( 5996 "Only the original thread that created a view hierarchy can touch its views."); 5997 } 5998 } 5999 6000 @Override 6001 public void requestDisallowInterceptTouchEvent(boolean disallowIntercept) { 6002 // ViewAncestor never intercepts touch event, so this can be a no-op 6003 } 6004 6005 @Override 6006 public boolean requestChildRectangleOnScreen(View child, Rect rectangle, boolean immediate) { 6007 final boolean scrolled = scrollToRectOrFocus(rectangle, immediate); 6008 if (rectangle != null) { 6009 mTempRect.set(rectangle); 6010 mTempRect.offset(0, -mCurScrollY); 6011 mTempRect.offset(mAttachInfo.mWindowLeft, mAttachInfo.mWindowTop); 6012 try { 6013 mWindowSession.onRectangleOnScreenRequested(mWindow, mTempRect, immediate); 6014 } catch (RemoteException re) { 6015 /* ignore */ 6016 } 6017 } 6018 return scrolled; 6019 } 6020 6021 @Override 6022 public void childHasTransientStateChanged(View child, boolean hasTransientState) { 6023 // Do nothing. 6024 } 6025 6026 void changeCanvasOpacity(boolean opaque) { 6027 // TODO(romainguy): recreate Canvas (software or hardware) to reflect the opacity change. 6028 Log.d(TAG, "changeCanvasOpacity: opaque=" + opaque); 6029 } 6030 6031 class TakenSurfaceHolder extends BaseSurfaceHolder { 6032 @Override 6033 public boolean onAllowLockCanvas() { 6034 return mDrawingAllowed; 6035 } 6036 6037 @Override 6038 public void onRelayoutContainer() { 6039 // Not currently interesting -- from changing between fixed and layout size. 6040 } 6041 6042 @Override 6043 public void setFormat(int format) { 6044 ((RootViewSurfaceTaker)mView).setSurfaceFormat(format); 6045 } 6046 6047 @Override 6048 public void setType(int type) { 6049 ((RootViewSurfaceTaker)mView).setSurfaceType(type); 6050 } 6051 6052 @Override 6053 public void onUpdateSurface() { 6054 // We take care of format and type changes on our own. 6055 throw new IllegalStateException("Shouldn't be here"); 6056 } 6057 6058 @Override 6059 public boolean isCreating() { 6060 return mIsCreating; 6061 } 6062 6063 @Override 6064 public void setFixedSize(int width, int height) { 6065 throw new UnsupportedOperationException( 6066 "Currently only support sizing from layout"); 6067 } 6068 6069 @Override 6070 public void setKeepScreenOn(boolean screenOn) { 6071 ((RootViewSurfaceTaker)mView).setSurfaceKeepScreenOn(screenOn); 6072 } 6073 } 6074 6075 static class W extends IWindow.Stub { 6076 private final WeakReference<ViewRootImpl> mViewAncestor; 6077 private final IWindowSession mWindowSession; 6078 6079 W(ViewRootImpl viewAncestor) { 6080 mViewAncestor = new WeakReference<ViewRootImpl>(viewAncestor); 6081 mWindowSession = viewAncestor.mWindowSession; 6082 } 6083 6084 @Override 6085 public void resized(Rect frame, Rect overscanInsets, Rect contentInsets, 6086 Rect visibleInsets, boolean reportDraw, Configuration newConfig) { 6087 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6088 if (viewAncestor != null) { 6089 viewAncestor.dispatchResized(frame, overscanInsets, contentInsets, 6090 visibleInsets, reportDraw, newConfig); 6091 } 6092 } 6093 6094 @Override 6095 public void moved(int newX, int newY) { 6096 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6097 if (viewAncestor != null) { 6098 viewAncestor.dispatchMoved(newX, newY); 6099 } 6100 } 6101 6102 @Override 6103 public void dispatchAppVisibility(boolean visible) { 6104 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6105 if (viewAncestor != null) { 6106 viewAncestor.dispatchAppVisibility(visible); 6107 } 6108 } 6109 6110 @Override 6111 public void dispatchScreenState(boolean on) { 6112 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6113 if (viewAncestor != null) { 6114 viewAncestor.dispatchScreenStateChange(on); 6115 } 6116 } 6117 6118 @Override 6119 public void dispatchGetNewSurface() { 6120 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6121 if (viewAncestor != null) { 6122 viewAncestor.dispatchGetNewSurface(); 6123 } 6124 } 6125 6126 @Override 6127 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 6128 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6129 if (viewAncestor != null) { 6130 viewAncestor.windowFocusChanged(hasFocus, inTouchMode); 6131 } 6132 } 6133 6134 private static int checkCallingPermission(String permission) { 6135 try { 6136 return ActivityManagerNative.getDefault().checkPermission( 6137 permission, Binder.getCallingPid(), Binder.getCallingUid()); 6138 } catch (RemoteException e) { 6139 return PackageManager.PERMISSION_DENIED; 6140 } 6141 } 6142 6143 @Override 6144 public void executeCommand(String command, String parameters, ParcelFileDescriptor out) { 6145 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6146 if (viewAncestor != null) { 6147 final View view = viewAncestor.mView; 6148 if (view != null) { 6149 if (checkCallingPermission(Manifest.permission.DUMP) != 6150 PackageManager.PERMISSION_GRANTED) { 6151 throw new SecurityException("Insufficient permissions to invoke" 6152 + " executeCommand() from pid=" + Binder.getCallingPid() 6153 + ", uid=" + Binder.getCallingUid()); 6154 } 6155 6156 OutputStream clientStream = null; 6157 try { 6158 clientStream = new ParcelFileDescriptor.AutoCloseOutputStream(out); 6159 ViewDebug.dispatchCommand(view, command, parameters, clientStream); 6160 } catch (IOException e) { 6161 e.printStackTrace(); 6162 } finally { 6163 if (clientStream != null) { 6164 try { 6165 clientStream.close(); 6166 } catch (IOException e) { 6167 e.printStackTrace(); 6168 } 6169 } 6170 } 6171 } 6172 } 6173 } 6174 6175 @Override 6176 public void closeSystemDialogs(String reason) { 6177 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6178 if (viewAncestor != null) { 6179 viewAncestor.dispatchCloseSystemDialogs(reason); 6180 } 6181 } 6182 6183 @Override 6184 public void dispatchWallpaperOffsets(float x, float y, float xStep, float yStep, 6185 boolean sync) { 6186 if (sync) { 6187 try { 6188 mWindowSession.wallpaperOffsetsComplete(asBinder()); 6189 } catch (RemoteException e) { 6190 } 6191 } 6192 } 6193 6194 @Override 6195 public void dispatchWallpaperCommand(String action, int x, int y, 6196 int z, Bundle extras, boolean sync) { 6197 if (sync) { 6198 try { 6199 mWindowSession.wallpaperCommandComplete(asBinder(), null); 6200 } catch (RemoteException e) { 6201 } 6202 } 6203 } 6204 6205 /* Drag/drop */ 6206 @Override 6207 public void dispatchDragEvent(DragEvent event) { 6208 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6209 if (viewAncestor != null) { 6210 viewAncestor.dispatchDragEvent(event); 6211 } 6212 } 6213 6214 @Override 6215 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 6216 int localValue, int localChanges) { 6217 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6218 if (viewAncestor != null) { 6219 viewAncestor.dispatchSystemUiVisibilityChanged(seq, globalVisibility, 6220 localValue, localChanges); 6221 } 6222 } 6223 6224 @Override 6225 public void doneAnimating() { 6226 final ViewRootImpl viewAncestor = mViewAncestor.get(); 6227 if (viewAncestor != null) { 6228 viewAncestor.dispatchDoneAnimating(); 6229 } 6230 } 6231 } 6232 6233 public static final class CalledFromWrongThreadException extends AndroidRuntimeException { 6234 public CalledFromWrongThreadException(String msg) { 6235 super(msg); 6236 } 6237 } 6238 6239 private final SurfaceHolder mHolder = new SurfaceHolder() { 6240 // we only need a SurfaceHolder for opengl. it would be nice 6241 // to implement everything else though, especially the callback 6242 // support (opengl doesn't make use of it right now, but eventually 6243 // will). 6244 @Override 6245 public Surface getSurface() { 6246 return mSurface; 6247 } 6248 6249 @Override 6250 public boolean isCreating() { 6251 return false; 6252 } 6253 6254 @Override 6255 public void addCallback(Callback callback) { 6256 } 6257 6258 @Override 6259 public void removeCallback(Callback callback) { 6260 } 6261 6262 @Override 6263 public void setFixedSize(int width, int height) { 6264 } 6265 6266 @Override 6267 public void setSizeFromLayout() { 6268 } 6269 6270 @Override 6271 public void setFormat(int format) { 6272 } 6273 6274 @Override 6275 public void setType(int type) { 6276 } 6277 6278 @Override 6279 public void setKeepScreenOn(boolean screenOn) { 6280 } 6281 6282 @Override 6283 public Canvas lockCanvas() { 6284 return null; 6285 } 6286 6287 @Override 6288 public Canvas lockCanvas(Rect dirty) { 6289 return null; 6290 } 6291 6292 @Override 6293 public void unlockCanvasAndPost(Canvas canvas) { 6294 } 6295 @Override 6296 public Rect getSurfaceFrame() { 6297 return null; 6298 } 6299 }; 6300 6301 static RunQueue getRunQueue() { 6302 RunQueue rq = sRunQueues.get(); 6303 if (rq != null) { 6304 return rq; 6305 } 6306 rq = new RunQueue(); 6307 sRunQueues.set(rq); 6308 return rq; 6309 } 6310 6311 /** 6312 * The run queue is used to enqueue pending work from Views when no Handler is 6313 * attached. The work is executed during the next call to performTraversals on 6314 * the thread. 6315 * @hide 6316 */ 6317 static final class RunQueue { 6318 private final ArrayList<HandlerAction> mActions = new ArrayList<HandlerAction>(); 6319 6320 void post(Runnable action) { 6321 postDelayed(action, 0); 6322 } 6323 6324 void postDelayed(Runnable action, long delayMillis) { 6325 HandlerAction handlerAction = new HandlerAction(); 6326 handlerAction.action = action; 6327 handlerAction.delay = delayMillis; 6328 6329 synchronized (mActions) { 6330 mActions.add(handlerAction); 6331 } 6332 } 6333 6334 void removeCallbacks(Runnable action) { 6335 final HandlerAction handlerAction = new HandlerAction(); 6336 handlerAction.action = action; 6337 6338 synchronized (mActions) { 6339 final ArrayList<HandlerAction> actions = mActions; 6340 6341 while (actions.remove(handlerAction)) { 6342 // Keep going 6343 } 6344 } 6345 } 6346 6347 void executeActions(Handler handler) { 6348 synchronized (mActions) { 6349 final ArrayList<HandlerAction> actions = mActions; 6350 final int count = actions.size(); 6351 6352 for (int i = 0; i < count; i++) { 6353 final HandlerAction handlerAction = actions.get(i); 6354 handler.postDelayed(handlerAction.action, handlerAction.delay); 6355 } 6356 6357 actions.clear(); 6358 } 6359 } 6360 6361 private static class HandlerAction { 6362 Runnable action; 6363 long delay; 6364 6365 @Override 6366 public boolean equals(Object o) { 6367 if (this == o) return true; 6368 if (o == null || getClass() != o.getClass()) return false; 6369 6370 HandlerAction that = (HandlerAction) o; 6371 return !(action != null ? !action.equals(that.action) : that.action != null); 6372 6373 } 6374 6375 @Override 6376 public int hashCode() { 6377 int result = action != null ? action.hashCode() : 0; 6378 result = 31 * result + (int) (delay ^ (delay >>> 32)); 6379 return result; 6380 } 6381 } 6382 } 6383 6384 /** 6385 * Class for managing the accessibility interaction connection 6386 * based on the global accessibility state. 6387 */ 6388 final class AccessibilityInteractionConnectionManager 6389 implements AccessibilityStateChangeListener { 6390 @Override 6391 public void onAccessibilityStateChanged(boolean enabled) { 6392 if (enabled) { 6393 ensureConnection(); 6394 if (mAttachInfo != null && mAttachInfo.mHasWindowFocus) { 6395 mView.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 6396 View focusedView = mView.findFocus(); 6397 if (focusedView != null && focusedView != mView) { 6398 focusedView.sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_FOCUSED); 6399 } 6400 } 6401 } else { 6402 ensureNoConnection(); 6403 mHandler.obtainMessage(MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST).sendToTarget(); 6404 } 6405 } 6406 6407 public void ensureConnection() { 6408 if (mAttachInfo != null) { 6409 final boolean registered = 6410 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED; 6411 if (!registered) { 6412 mAttachInfo.mAccessibilityWindowId = 6413 mAccessibilityManager.addAccessibilityInteractionConnection(mWindow, 6414 new AccessibilityInteractionConnection(ViewRootImpl.this)); 6415 } 6416 } 6417 } 6418 6419 public void ensureNoConnection() { 6420 final boolean registered = 6421 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED; 6422 if (registered) { 6423 mAttachInfo.mAccessibilityWindowId = AccessibilityNodeInfo.UNDEFINED; 6424 mAccessibilityManager.removeAccessibilityInteractionConnection(mWindow); 6425 } 6426 } 6427 } 6428 6429 /** 6430 * This class is an interface this ViewAncestor provides to the 6431 * AccessibilityManagerService to the latter can interact with 6432 * the view hierarchy in this ViewAncestor. 6433 */ 6434 static final class AccessibilityInteractionConnection 6435 extends IAccessibilityInteractionConnection.Stub { 6436 private final WeakReference<ViewRootImpl> mViewRootImpl; 6437 6438 AccessibilityInteractionConnection(ViewRootImpl viewRootImpl) { 6439 mViewRootImpl = new WeakReference<ViewRootImpl>(viewRootImpl); 6440 } 6441 6442 @Override 6443 public void findAccessibilityNodeInfoByAccessibilityId(long accessibilityNodeId, 6444 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 6445 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6446 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6447 if (viewRootImpl != null && viewRootImpl.mView != null) { 6448 viewRootImpl.getAccessibilityInteractionController() 6449 .findAccessibilityNodeInfoByAccessibilityIdClientThread(accessibilityNodeId, 6450 interactionId, callback, flags, interrogatingPid, interrogatingTid, 6451 spec); 6452 } else { 6453 // We cannot make the call and notify the caller so it does not wait. 6454 try { 6455 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 6456 } catch (RemoteException re) { 6457 /* best effort - ignore */ 6458 } 6459 } 6460 } 6461 6462 @Override 6463 public void performAccessibilityAction(long accessibilityNodeId, int action, 6464 Bundle arguments, int interactionId, 6465 IAccessibilityInteractionConnectionCallback callback, int flags, 6466 int interogatingPid, long interrogatingTid) { 6467 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6468 if (viewRootImpl != null && viewRootImpl.mView != null) { 6469 viewRootImpl.getAccessibilityInteractionController() 6470 .performAccessibilityActionClientThread(accessibilityNodeId, action, arguments, 6471 interactionId, callback, flags, interogatingPid, interrogatingTid); 6472 } else { 6473 // We cannot make the call and notify the caller so it does not wait. 6474 try { 6475 callback.setPerformAccessibilityActionResult(false, interactionId); 6476 } catch (RemoteException re) { 6477 /* best effort - ignore */ 6478 } 6479 } 6480 } 6481 6482 @Override 6483 public void findAccessibilityNodeInfosByViewId(long accessibilityNodeId, 6484 String viewId, 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 .findAccessibilityNodeInfosByViewIdClientThread(accessibilityNodeId, 6491 viewId, interactionId, callback, flags, interrogatingPid, 6492 interrogatingTid, spec); 6493 } else { 6494 // We cannot make the call and notify the caller so it does not wait. 6495 try { 6496 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6497 } catch (RemoteException re) { 6498 /* best effort - ignore */ 6499 } 6500 } 6501 } 6502 6503 @Override 6504 public void findAccessibilityNodeInfosByText(long accessibilityNodeId, String text, 6505 int interactionId, IAccessibilityInteractionConnectionCallback callback, int flags, 6506 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6507 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6508 if (viewRootImpl != null && viewRootImpl.mView != null) { 6509 viewRootImpl.getAccessibilityInteractionController() 6510 .findAccessibilityNodeInfosByTextClientThread(accessibilityNodeId, text, 6511 interactionId, callback, flags, interrogatingPid, interrogatingTid, 6512 spec); 6513 } else { 6514 // We cannot make the call and notify the caller so it does not wait. 6515 try { 6516 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 6517 } catch (RemoteException re) { 6518 /* best effort - ignore */ 6519 } 6520 } 6521 } 6522 6523 @Override 6524 public void findFocus(long accessibilityNodeId, int focusType, int interactionId, 6525 IAccessibilityInteractionConnectionCallback callback, int flags, 6526 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6527 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6528 if (viewRootImpl != null && viewRootImpl.mView != null) { 6529 viewRootImpl.getAccessibilityInteractionController() 6530 .findFocusClientThread(accessibilityNodeId, focusType, interactionId, callback, 6531 flags, interrogatingPid, interrogatingTid, spec); 6532 } else { 6533 // We cannot make the call and notify the caller so it does not wait. 6534 try { 6535 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6536 } catch (RemoteException re) { 6537 /* best effort - ignore */ 6538 } 6539 } 6540 } 6541 6542 @Override 6543 public void focusSearch(long accessibilityNodeId, int direction, int interactionId, 6544 IAccessibilityInteractionConnectionCallback callback, int flags, 6545 int interrogatingPid, long interrogatingTid, MagnificationSpec spec) { 6546 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 6547 if (viewRootImpl != null && viewRootImpl.mView != null) { 6548 viewRootImpl.getAccessibilityInteractionController() 6549 .focusSearchClientThread(accessibilityNodeId, direction, interactionId, 6550 callback, flags, interrogatingPid, interrogatingTid, spec); 6551 } else { 6552 // We cannot make the call and notify the caller so it does not wait. 6553 try { 6554 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 6555 } catch (RemoteException re) { 6556 /* best effort - ignore */ 6557 } 6558 } 6559 } 6560 } 6561 6562 private class SendWindowContentChangedAccessibilityEvent implements Runnable { 6563 private int mChangeTypes = 0; 6564 6565 public View mSource; 6566 public long mLastEventTimeMillis; 6567 6568 @Override 6569 public void run() { 6570 // The accessibility may be turned off while we were waiting so check again. 6571 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 6572 mLastEventTimeMillis = SystemClock.uptimeMillis(); 6573 AccessibilityEvent event = AccessibilityEvent.obtain(); 6574 event.setEventType(AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED); 6575 event.setContentChangeTypes(mChangeTypes); 6576 mSource.sendAccessibilityEventUnchecked(event); 6577 } else { 6578 mLastEventTimeMillis = 0; 6579 } 6580 // In any case reset to initial state. 6581 mSource.resetSubtreeAccessibilityStateChanged(); 6582 mSource = null; 6583 mChangeTypes = 0; 6584 } 6585 6586 public void runOrPost(View source, int changeType) { 6587 if (mSource != null) { 6588 // If there is no common predecessor, then mSource points to 6589 // a removed view, hence in this case always prefer the source. 6590 View predecessor = getCommonPredecessor(mSource, source); 6591 mSource = (predecessor != null) ? predecessor : source; 6592 mChangeTypes |= changeType; 6593 return; 6594 } 6595 mSource = source; 6596 mChangeTypes = changeType; 6597 final long timeSinceLastMillis = SystemClock.uptimeMillis() - mLastEventTimeMillis; 6598 final long minEventIntevalMillis = 6599 ViewConfiguration.getSendRecurringAccessibilityEventsInterval(); 6600 if (timeSinceLastMillis >= minEventIntevalMillis) { 6601 mSource.removeCallbacks(this); 6602 run(); 6603 } else { 6604 mSource.postDelayed(this, minEventIntevalMillis - timeSinceLastMillis); 6605 } 6606 } 6607 } 6608} 6609