ViewRootImpl.java revision 525ae2075cf96d3a2ac67cd3a662069fd579f42d
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.animation.ValueAnimator; 22import android.app.ActivityManagerNative; 23import android.content.ClipDescription; 24import android.content.ComponentCallbacks; 25import android.content.ComponentCallbacks2; 26import android.content.Context; 27import android.content.pm.ApplicationInfo; 28import android.content.pm.PackageManager; 29import android.content.res.CompatibilityInfo; 30import android.content.res.Configuration; 31import android.content.res.Resources; 32import android.graphics.Canvas; 33import android.graphics.Paint; 34import android.graphics.PixelFormat; 35import android.graphics.Point; 36import android.graphics.PointF; 37import android.graphics.PorterDuff; 38import android.graphics.Rect; 39import android.graphics.Region; 40import android.graphics.drawable.Drawable; 41import android.media.AudioManager; 42import android.os.Binder; 43import android.os.Bundle; 44import android.os.Debug; 45import android.os.Handler; 46import android.os.LatencyTimer; 47import android.os.Looper; 48import android.os.Message; 49import android.os.ParcelFileDescriptor; 50import android.os.PowerManager; 51import android.os.Process; 52import android.os.RemoteException; 53import android.os.SystemClock; 54import android.os.SystemProperties; 55import android.os.Trace; 56import android.util.AndroidRuntimeException; 57import android.util.DisplayMetrics; 58import android.util.EventLog; 59import android.util.Log; 60import android.util.Slog; 61import android.util.TypedValue; 62import android.view.View.AttachInfo; 63import android.view.View.MeasureSpec; 64import android.view.accessibility.AccessibilityEvent; 65import android.view.accessibility.AccessibilityManager; 66import android.view.accessibility.AccessibilityManager.AccessibilityStateChangeListener; 67import android.view.accessibility.AccessibilityNodeInfo; 68import android.view.accessibility.AccessibilityNodeProvider; 69import android.view.accessibility.IAccessibilityInteractionConnection; 70import android.view.accessibility.IAccessibilityInteractionConnectionCallback; 71import android.view.animation.AccelerateDecelerateInterpolator; 72import android.view.animation.Interpolator; 73import android.view.inputmethod.InputConnection; 74import android.view.inputmethod.InputMethodManager; 75import android.widget.Scroller; 76 77import com.android.internal.R; 78import com.android.internal.policy.PolicyManager; 79import com.android.internal.view.BaseSurfaceHolder; 80import com.android.internal.view.IInputMethodCallback; 81import com.android.internal.view.IInputMethodSession; 82import com.android.internal.view.RootViewSurfaceTaker; 83 84import java.io.IOException; 85import java.io.OutputStream; 86import java.lang.ref.WeakReference; 87import java.util.ArrayList; 88import java.util.HashSet; 89 90/** 91 * The top of a view hierarchy, implementing the needed protocol between View 92 * and the WindowManager. This is for the most part an internal implementation 93 * detail of {@link WindowManagerImpl}. 94 * 95 * {@hide} 96 */ 97@SuppressWarnings({"EmptyCatchBlock", "PointlessBooleanExpression"}) 98public final class ViewRootImpl implements ViewParent, 99 View.AttachInfo.Callbacks, HardwareRenderer.HardwareDrawCallbacks { 100 private static final String TAG = "ViewRootImpl"; 101 private static final boolean DBG = false; 102 private static final boolean LOCAL_LOGV = false; 103 /** @noinspection PointlessBooleanExpression*/ 104 private static final boolean DEBUG_DRAW = false || LOCAL_LOGV; 105 private static final boolean DEBUG_LAYOUT = false || LOCAL_LOGV; 106 private static final boolean DEBUG_DIALOG = false || LOCAL_LOGV; 107 private static final boolean DEBUG_INPUT_RESIZE = false || LOCAL_LOGV; 108 private static final boolean DEBUG_ORIENTATION = false || LOCAL_LOGV; 109 private static final boolean DEBUG_TRACKBALL = false || LOCAL_LOGV; 110 private static final boolean DEBUG_IMF = false || LOCAL_LOGV; 111 private static final boolean DEBUG_CONFIGURATION = false || LOCAL_LOGV; 112 private static final boolean DEBUG_FPS = false; 113 114 private static final boolean USE_RENDER_THREAD = false; 115 116 /** 117 * Set this system property to true to force the view hierarchy to render 118 * at 60 Hz. This can be used to measure the potential framerate. 119 */ 120 private static final String PROPERTY_PROFILE_RENDERING = "viewancestor.profile_rendering"; 121 122 private static final boolean MEASURE_LATENCY = false; 123 private static LatencyTimer lt; 124 125 /** 126 * Maximum time we allow the user to roll the trackball enough to generate 127 * a key event, before resetting the counters. 128 */ 129 static final int MAX_TRACKBALL_DELAY = 250; 130 131 static IWindowSession sWindowSession; 132 133 static final Object mStaticInit = new Object(); 134 static boolean mInitialized = false; 135 136 static final ThreadLocal<RunQueue> sRunQueues = new ThreadLocal<RunQueue>(); 137 138 static final ArrayList<Runnable> sFirstDrawHandlers = new ArrayList<Runnable>(); 139 static boolean sFirstDrawComplete = false; 140 141 static final ArrayList<ComponentCallbacks> sConfigCallbacks 142 = new ArrayList<ComponentCallbacks>(); 143 144 private static boolean sUseRenderThread = false; 145 private static boolean sRenderThreadQueried = false; 146 private static final Object[] sRenderThreadQueryLock = new Object[0]; 147 148 long mLastTrackballTime = 0; 149 final TrackballAxis mTrackballAxisX = new TrackballAxis(); 150 final TrackballAxis mTrackballAxisY = new TrackballAxis(); 151 152 int mLastJoystickXDirection; 153 int mLastJoystickYDirection; 154 int mLastJoystickXKeyCode; 155 int mLastJoystickYKeyCode; 156 157 final int[] mTmpLocation = new int[2]; 158 159 final TypedValue mTmpValue = new TypedValue(); 160 161 final InputMethodCallback mInputMethodCallback; 162 final Thread mThread; 163 164 final WindowLeaked mLocation; 165 166 final WindowManager.LayoutParams mWindowAttributes = new WindowManager.LayoutParams(); 167 168 final W mWindow; 169 170 final int mTargetSdkVersion; 171 172 int mSeq; 173 174 View mView; 175 View mFocusedView; 176 View mRealFocusedView; // this is not set to null in touch mode 177 View mOldFocusedView; 178 179 View mAccessibilityFocusedHost; 180 AccessibilityNodeInfo mAccessibilityFocusedVirtualView; 181 182 int mViewVisibility; 183 boolean mAppVisible = true; 184 int mOrigWindowType = -1; 185 186 // Set to true if the owner of this window is in the stopped state, 187 // so the window should no longer be active. 188 boolean mStopped = false; 189 190 boolean mLastInCompatMode = false; 191 192 SurfaceHolder.Callback2 mSurfaceHolderCallback; 193 BaseSurfaceHolder mSurfaceHolder; 194 boolean mIsCreating; 195 boolean mDrawingAllowed; 196 197 final Region mTransparentRegion; 198 final Region mPreviousTransparentRegion; 199 200 int mWidth; 201 int mHeight; 202 Rect mDirty; 203 final Rect mCurrentDirty = new Rect(); 204 final Rect mPreviousDirty = new Rect(); 205 boolean mIsAnimating; 206 207 CompatibilityInfo.Translator mTranslator; 208 209 final View.AttachInfo mAttachInfo; 210 InputChannel mInputChannel; 211 InputQueue.Callback mInputQueueCallback; 212 InputQueue mInputQueue; 213 FallbackEventHandler mFallbackEventHandler; 214 Choreographer mChoreographer; 215 216 final Rect mTempRect; // used in the transaction to not thrash the heap. 217 final Rect mVisRect; // used to retrieve visible rect of focused view. 218 219 boolean mTraversalScheduled; 220 int mTraversalBarrier; 221 long mLastTraversalFinishedTimeNanos; 222 long mLastDrawFinishedTimeNanos; 223 boolean mWillDrawSoon; 224 boolean mFitSystemWindowsRequested; 225 boolean mLayoutRequested; 226 boolean mFirst; 227 boolean mReportNextDraw; 228 boolean mFullRedrawNeeded; 229 boolean mNewSurfaceNeeded; 230 boolean mHasHadWindowFocus; 231 boolean mLastWasImTarget; 232 boolean mWindowsAnimating; 233 boolean mIsDrawing; 234 int mLastSystemUiVisibility; 235 236 // Pool of queued input events. 237 private static final int MAX_QUEUED_INPUT_EVENT_POOL_SIZE = 10; 238 private QueuedInputEvent mQueuedInputEventPool; 239 private int mQueuedInputEventPoolSize; 240 241 // Input event queue. 242 QueuedInputEvent mFirstPendingInputEvent; 243 QueuedInputEvent mCurrentInputEvent; 244 boolean mProcessInputEventsScheduled; 245 246 boolean mWindowAttributesChanged = false; 247 int mWindowAttributesChangesFlag = 0; 248 249 // These can be accessed by any thread, must be protected with a lock. 250 // Surface can never be reassigned or cleared (use Surface.clear()). 251 private final Surface mSurface = new Surface(); 252 253 boolean mAdded; 254 boolean mAddedTouchMode; 255 256 CompatibilityInfoHolder mCompatibilityInfo; 257 258 /*package*/ int mAddNesting; 259 260 // These are accessed by multiple threads. 261 final Rect mWinFrame; // frame given by window manager. 262 263 final Rect mPendingVisibleInsets = new Rect(); 264 final Rect mPendingContentInsets = new Rect(); 265 final ViewTreeObserver.InternalInsetsInfo mLastGivenInsets 266 = new ViewTreeObserver.InternalInsetsInfo(); 267 268 final Rect mFitSystemWindowsInsets = new Rect(); 269 270 final Configuration mLastConfiguration = new Configuration(); 271 final Configuration mPendingConfiguration = new Configuration(); 272 273 class ResizedInfo { 274 Rect contentInsets; 275 Rect visibleInsets; 276 Configuration newConfig; 277 } 278 279 boolean mScrollMayChange; 280 int mSoftInputMode; 281 View mLastScrolledFocus; 282 int mScrollY; 283 int mCurScrollY; 284 Scroller mScroller; 285 HardwareLayer mResizeBuffer; 286 long mResizeBufferStartTime; 287 int mResizeBufferDuration; 288 static final Interpolator mResizeInterpolator = new AccelerateDecelerateInterpolator(); 289 private ArrayList<LayoutTransition> mPendingTransitions; 290 291 final ViewConfiguration mViewConfiguration; 292 293 /* Drag/drop */ 294 ClipDescription mDragDescription; 295 View mCurrentDragView; 296 volatile Object mLocalDragState; 297 final PointF mDragPoint = new PointF(); 298 final PointF mLastTouchPoint = new PointF(); 299 300 private boolean mProfileRendering; 301 private Thread mRenderProfiler; 302 private volatile boolean mRenderProfilingEnabled; 303 304 // Variables to track frames per second, enabled via DEBUG_FPS flag 305 private long mFpsStartTime = -1; 306 private long mFpsPrevTime = -1; 307 private int mFpsNumFrames; 308 309 private final ArrayList<DisplayList> mDisplayLists = new ArrayList<DisplayList>(24); 310 311 /** 312 * see {@link #playSoundEffect(int)} 313 */ 314 AudioManager mAudioManager; 315 316 final AccessibilityManager mAccessibilityManager; 317 318 AccessibilityInteractionController mAccessibilityInteractionController; 319 320 AccessibilityInteractionConnectionManager mAccessibilityInteractionConnectionManager; 321 322 SendWindowContentChangedAccessibilityEvent mSendWindowContentChangedAccessibilityEvent; 323 324 HashSet<View> mTempHashSet; 325 326 private final int mDensity; 327 328 /** 329 * Consistency verifier for debugging purposes. 330 */ 331 protected final InputEventConsistencyVerifier mInputEventConsistencyVerifier = 332 InputEventConsistencyVerifier.isInstrumentationEnabled() ? 333 new InputEventConsistencyVerifier(this, 0) : null; 334 335 public static IWindowSession getWindowSession(Looper mainLooper) { 336 synchronized (mStaticInit) { 337 if (!mInitialized) { 338 try { 339 InputMethodManager imm = InputMethodManager.getInstance(mainLooper); 340 IWindowManager windowManager = Display.getWindowManager(); 341 sWindowSession = windowManager.openSession( 342 imm.getClient(), imm.getInputContext()); 343 float animatorScale = windowManager.getAnimationScale(2); 344 ValueAnimator.setDurationScale(animatorScale); 345 mInitialized = true; 346 } catch (RemoteException e) { 347 } 348 } 349 return sWindowSession; 350 } 351 } 352 353 static final class SystemUiVisibilityInfo { 354 int seq; 355 int globalVisibility; 356 int localValue; 357 int localChanges; 358 } 359 360 public ViewRootImpl(Context context) { 361 super(); 362 363 if (MEASURE_LATENCY) { 364 if (lt == null) { 365 lt = new LatencyTimer(100, 1000); 366 } 367 } 368 369 // Initialize the statics when this class is first instantiated. This is 370 // done here instead of in the static block because Zygote does not 371 // allow the spawning of threads. 372 getWindowSession(context.getMainLooper()); 373 374 mThread = Thread.currentThread(); 375 mLocation = new WindowLeaked(null); 376 mLocation.fillInStackTrace(); 377 mWidth = -1; 378 mHeight = -1; 379 mDirty = new Rect(); 380 mTempRect = new Rect(); 381 mVisRect = new Rect(); 382 mWinFrame = new Rect(); 383 mWindow = new W(this); 384 mTargetSdkVersion = context.getApplicationInfo().targetSdkVersion; 385 mInputMethodCallback = new InputMethodCallback(this); 386 mViewVisibility = View.GONE; 387 mTransparentRegion = new Region(); 388 mPreviousTransparentRegion = new Region(); 389 mFirst = true; // true for the first time the view is added 390 mAdded = false; 391 mAccessibilityManager = AccessibilityManager.getInstance(context); 392 mAccessibilityInteractionConnectionManager = 393 new AccessibilityInteractionConnectionManager(); 394 mAccessibilityManager.addAccessibilityStateChangeListener( 395 mAccessibilityInteractionConnectionManager); 396 mAttachInfo = new View.AttachInfo(sWindowSession, mWindow, this, mHandler, this); 397 mViewConfiguration = ViewConfiguration.get(context); 398 mDensity = context.getResources().getDisplayMetrics().densityDpi; 399 mFallbackEventHandler = PolicyManager.makeNewFallbackEventHandler(context); 400 mProfileRendering = Boolean.parseBoolean( 401 SystemProperties.get(PROPERTY_PROFILE_RENDERING, "false")); 402 mChoreographer = Choreographer.getInstance(); 403 404 PowerManager powerManager = (PowerManager) context.getSystemService(Context.POWER_SERVICE); 405 mAttachInfo.mScreenOn = powerManager.isScreenOn(); 406 loadSystemProperties(); 407 } 408 409 /** 410 * @return True if the application requests the use of a separate render thread, 411 * false otherwise 412 */ 413 private static boolean isRenderThreadRequested(Context context) { 414 if (USE_RENDER_THREAD) { 415 synchronized (sRenderThreadQueryLock) { 416 if (!sRenderThreadQueried) { 417 final PackageManager packageManager = context.getPackageManager(); 418 final String packageName = context.getApplicationInfo().packageName; 419 try { 420 ApplicationInfo applicationInfo = packageManager.getApplicationInfo(packageName, 421 PackageManager.GET_META_DATA); 422 if (applicationInfo.metaData != null) { 423 sUseRenderThread = applicationInfo.metaData.getBoolean( 424 "android.graphics.renderThread", false); 425 } 426 } catch (PackageManager.NameNotFoundException e) { 427 } finally { 428 sRenderThreadQueried = true; 429 } 430 } 431 return sUseRenderThread; 432 } 433 } else { 434 return false; 435 } 436 } 437 438 public static void addFirstDrawHandler(Runnable callback) { 439 synchronized (sFirstDrawHandlers) { 440 if (!sFirstDrawComplete) { 441 sFirstDrawHandlers.add(callback); 442 } 443 } 444 } 445 446 public static void addConfigCallback(ComponentCallbacks callback) { 447 synchronized (sConfigCallbacks) { 448 sConfigCallbacks.add(callback); 449 } 450 } 451 452 // FIXME for perf testing only 453 private boolean mProfile = false; 454 455 /** 456 * Call this to profile the next traversal call. 457 * FIXME for perf testing only. Remove eventually 458 */ 459 public void profile() { 460 mProfile = true; 461 } 462 463 /** 464 * Indicates whether we are in touch mode. Calling this method triggers an IPC 465 * call and should be avoided whenever possible. 466 * 467 * @return True, if the device is in touch mode, false otherwise. 468 * 469 * @hide 470 */ 471 static boolean isInTouchMode() { 472 if (mInitialized) { 473 try { 474 return sWindowSession.getInTouchMode(); 475 } catch (RemoteException e) { 476 } 477 } 478 return false; 479 } 480 481 /** 482 * We have one child 483 */ 484 public void setView(View view, WindowManager.LayoutParams attrs, View panelParentView) { 485 synchronized (this) { 486 if (mView == null) { 487 mView = view; 488 mFallbackEventHandler.setView(view); 489 mWindowAttributes.copyFrom(attrs); 490 attrs = mWindowAttributes; 491 492 setAccessibilityFocusedHost(null); 493 494 if (view instanceof RootViewSurfaceTaker) { 495 mSurfaceHolderCallback = 496 ((RootViewSurfaceTaker)view).willYouTakeTheSurface(); 497 if (mSurfaceHolderCallback != null) { 498 mSurfaceHolder = new TakenSurfaceHolder(); 499 mSurfaceHolder.setFormat(PixelFormat.UNKNOWN); 500 } 501 } 502 503 CompatibilityInfo compatibilityInfo = mCompatibilityInfo.get(); 504 mTranslator = compatibilityInfo.getTranslator(); 505 506 // If the application owns the surface, don't enable hardware acceleration 507 if (mSurfaceHolder == null) { 508 enableHardwareAcceleration(mView.getContext(), attrs); 509 } 510 511 boolean restore = false; 512 if (mTranslator != null) { 513 mSurface.setCompatibilityTranslator(mTranslator); 514 restore = true; 515 attrs.backup(); 516 mTranslator.translateWindowLayout(attrs); 517 } 518 if (DEBUG_LAYOUT) Log.d(TAG, "WindowLayout in setView:" + attrs); 519 520 if (!compatibilityInfo.supportsScreen()) { 521 attrs.flags |= WindowManager.LayoutParams.FLAG_COMPATIBLE_WINDOW; 522 mLastInCompatMode = true; 523 } 524 525 mSoftInputMode = attrs.softInputMode; 526 mWindowAttributesChanged = true; 527 mWindowAttributesChangesFlag = WindowManager.LayoutParams.EVERYTHING_CHANGED; 528 mAttachInfo.mRootView = view; 529 mAttachInfo.mScalingRequired = mTranslator != null; 530 mAttachInfo.mApplicationScale = 531 mTranslator == null ? 1.0f : mTranslator.applicationScale; 532 if (panelParentView != null) { 533 mAttachInfo.mPanelParentWindowToken 534 = panelParentView.getApplicationWindowToken(); 535 } 536 mAdded = true; 537 int res; /* = WindowManagerImpl.ADD_OKAY; */ 538 539 // Schedule the first layout -before- adding to the window 540 // manager, to make sure we do the relayout before receiving 541 // any other events from the system. 542 requestLayout(); 543 if ((mWindowAttributes.inputFeatures 544 & WindowManager.LayoutParams.INPUT_FEATURE_NO_INPUT_CHANNEL) == 0) { 545 mInputChannel = new InputChannel(); 546 } 547 try { 548 mOrigWindowType = mWindowAttributes.type; 549 mAttachInfo.mRecomputeGlobalAttributes = true; 550 collectViewAttributes(); 551 res = sWindowSession.add(mWindow, mSeq, mWindowAttributes, 552 getHostVisibility(), mAttachInfo.mContentInsets, 553 mInputChannel); 554 } catch (RemoteException e) { 555 mAdded = false; 556 mView = null; 557 mAttachInfo.mRootView = null; 558 mInputChannel = null; 559 mFallbackEventHandler.setView(null); 560 unscheduleTraversals(); 561 setAccessibilityFocusedHost(null); 562 throw new RuntimeException("Adding window failed", e); 563 } finally { 564 if (restore) { 565 attrs.restore(); 566 } 567 } 568 569 if (mTranslator != null) { 570 mTranslator.translateRectInScreenToAppWindow(mAttachInfo.mContentInsets); 571 } 572 mPendingContentInsets.set(mAttachInfo.mContentInsets); 573 mPendingVisibleInsets.set(0, 0, 0, 0); 574 if (DEBUG_LAYOUT) Log.v(TAG, "Added window " + mWindow); 575 if (res < WindowManagerImpl.ADD_OKAY) { 576 mView = null; 577 mAttachInfo.mRootView = null; 578 mAdded = false; 579 mFallbackEventHandler.setView(null); 580 unscheduleTraversals(); 581 setAccessibilityFocusedHost(null); 582 switch (res) { 583 case WindowManagerImpl.ADD_BAD_APP_TOKEN: 584 case WindowManagerImpl.ADD_BAD_SUBWINDOW_TOKEN: 585 throw new WindowManagerImpl.BadTokenException( 586 "Unable to add window -- token " + attrs.token 587 + " is not valid; is your activity running?"); 588 case WindowManagerImpl.ADD_NOT_APP_TOKEN: 589 throw new WindowManagerImpl.BadTokenException( 590 "Unable to add window -- token " + attrs.token 591 + " is not for an application"); 592 case WindowManagerImpl.ADD_APP_EXITING: 593 throw new WindowManagerImpl.BadTokenException( 594 "Unable to add window -- app for token " + attrs.token 595 + " is exiting"); 596 case WindowManagerImpl.ADD_DUPLICATE_ADD: 597 throw new WindowManagerImpl.BadTokenException( 598 "Unable to add window -- window " + mWindow 599 + " has already been added"); 600 case WindowManagerImpl.ADD_STARTING_NOT_NEEDED: 601 // Silently ignore -- we would have just removed it 602 // right away, anyway. 603 return; 604 case WindowManagerImpl.ADD_MULTIPLE_SINGLETON: 605 throw new WindowManagerImpl.BadTokenException( 606 "Unable to add window " + mWindow + 607 " -- another window of this type already exists"); 608 case WindowManagerImpl.ADD_PERMISSION_DENIED: 609 throw new WindowManagerImpl.BadTokenException( 610 "Unable to add window " + mWindow + 611 " -- permission denied for this window type"); 612 } 613 throw new RuntimeException( 614 "Unable to add window -- unknown error code " + res); 615 } 616 617 if (view instanceof RootViewSurfaceTaker) { 618 mInputQueueCallback = 619 ((RootViewSurfaceTaker)view).willYouTakeTheInputQueue(); 620 } 621 if (mInputChannel != null) { 622 if (mInputQueueCallback != null) { 623 mInputQueue = new InputQueue(mInputChannel); 624 mInputQueueCallback.onInputQueueCreated(mInputQueue); 625 } else { 626 mInputEventReceiver = new WindowInputEventReceiver(mInputChannel, 627 Looper.myLooper()); 628 } 629 } 630 631 view.assignParent(this); 632 mAddedTouchMode = (res&WindowManagerImpl.ADD_FLAG_IN_TOUCH_MODE) != 0; 633 mAppVisible = (res&WindowManagerImpl.ADD_FLAG_APP_VISIBLE) != 0; 634 635 if (mAccessibilityManager.isEnabled()) { 636 mAccessibilityInteractionConnectionManager.ensureConnection(); 637 } 638 639 if (view.getImportantForAccessibility() == View.IMPORTANT_FOR_ACCESSIBILITY_AUTO) { 640 view.setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_YES); 641 } 642 } 643 } 644 } 645 646 void destroyHardwareResources() { 647 if (mAttachInfo.mHardwareRenderer != null) { 648 if (mAttachInfo.mHardwareRenderer.isEnabled()) { 649 mAttachInfo.mHardwareRenderer.destroyLayers(mView); 650 } 651 mAttachInfo.mHardwareRenderer.destroy(false); 652 } 653 } 654 655 void terminateHardwareResources() { 656 if (mAttachInfo.mHardwareRenderer != null) { 657 mAttachInfo.mHardwareRenderer.destroyHardwareResources(mView); 658 mAttachInfo.mHardwareRenderer.destroy(false); 659 } 660 } 661 662 void destroyHardwareLayers() { 663 if (mThread != Thread.currentThread()) { 664 if (mAttachInfo.mHardwareRenderer != null && 665 mAttachInfo.mHardwareRenderer.isEnabled()) { 666 HardwareRenderer.trimMemory(ComponentCallbacks2.TRIM_MEMORY_MODERATE); 667 } 668 } else { 669 if (mAttachInfo.mHardwareRenderer != null && 670 mAttachInfo.mHardwareRenderer.isEnabled()) { 671 mAttachInfo.mHardwareRenderer.destroyLayers(mView); 672 } 673 } 674 } 675 676 public void attachFunctor(int functor) { 677 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled()) { 678 mAttachInfo.mHardwareRenderer.attachFunctor(mAttachInfo, functor); 679 } 680 } 681 682 public void detachFunctor(int functor) { 683 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled()) { 684 mAttachInfo.mHardwareRenderer.detachFunctor(functor); 685 } 686 } 687 688 private void enableHardwareAcceleration(Context context, WindowManager.LayoutParams attrs) { 689 mAttachInfo.mHardwareAccelerated = false; 690 mAttachInfo.mHardwareAccelerationRequested = false; 691 692 // Don't enable hardware acceleration when the application is in compatibility mode 693 if (mTranslator != null) return; 694 695 // Try to enable hardware acceleration if requested 696 final boolean hardwareAccelerated = 697 (attrs.flags & WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED) != 0; 698 699 if (hardwareAccelerated) { 700 if (!HardwareRenderer.isAvailable()) { 701 return; 702 } 703 704 // Persistent processes (including the system) should not do 705 // accelerated rendering on low-end devices. In that case, 706 // sRendererDisabled will be set. In addition, the system process 707 // itself should never do accelerated rendering. In that case, both 708 // sRendererDisabled and sSystemRendererDisabled are set. When 709 // sSystemRendererDisabled is set, PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED 710 // can be used by code on the system process to escape that and enable 711 // HW accelerated drawing. (This is basically for the lock screen.) 712 713 final boolean fakeHwAccelerated = (attrs.privateFlags & 714 WindowManager.LayoutParams.PRIVATE_FLAG_FAKE_HARDWARE_ACCELERATED) != 0; 715 final boolean forceHwAccelerated = (attrs.privateFlags & 716 WindowManager.LayoutParams.PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED) != 0; 717 718 if (!HardwareRenderer.sRendererDisabled || (HardwareRenderer.sSystemRendererDisabled 719 && forceHwAccelerated)) { 720 // Don't enable hardware acceleration when we're not on the main thread 721 if (!HardwareRenderer.sSystemRendererDisabled && 722 Looper.getMainLooper() != Looper.myLooper()) { 723 Log.w(HardwareRenderer.LOG_TAG, "Attempting to initialize hardware " 724 + "acceleration outside of the main thread, aborting"); 725 return; 726 } 727 728 final boolean renderThread = isRenderThreadRequested(context); 729 if (renderThread) { 730 Log.i(HardwareRenderer.LOG_TAG, "Render threat initiated"); 731 } 732 733 if (mAttachInfo.mHardwareRenderer != null) { 734 mAttachInfo.mHardwareRenderer.destroy(true); 735 } 736 737 final boolean translucent = attrs.format != PixelFormat.OPAQUE; 738 mAttachInfo.mHardwareRenderer = HardwareRenderer.createGlRenderer(2, translucent); 739 mAttachInfo.mHardwareAccelerated = mAttachInfo.mHardwareAccelerationRequested 740 = mAttachInfo.mHardwareRenderer != null; 741 742 } else if (fakeHwAccelerated) { 743 // The window had wanted to use hardware acceleration, but this 744 // is not allowed in its process. By setting this flag, it can 745 // still render as if it was accelerated. This is basically for 746 // the preview windows the window manager shows for launching 747 // applications, so they will look more like the app being launched. 748 mAttachInfo.mHardwareAccelerationRequested = true; 749 } 750 } 751 } 752 753 public View getView() { 754 return mView; 755 } 756 757 final WindowLeaked getLocation() { 758 return mLocation; 759 } 760 761 void setLayoutParams(WindowManager.LayoutParams attrs, boolean newView) { 762 synchronized (this) { 763 int oldSoftInputMode = mWindowAttributes.softInputMode; 764 // preserve compatible window flag if exists. 765 int compatibleWindowFlag = 766 mWindowAttributes.flags & WindowManager.LayoutParams.FLAG_COMPATIBLE_WINDOW; 767 // transfer over system UI visibility values as they carry current state. 768 attrs.systemUiVisibility = mWindowAttributes.systemUiVisibility; 769 attrs.subtreeSystemUiVisibility = mWindowAttributes.subtreeSystemUiVisibility; 770 mWindowAttributesChangesFlag = mWindowAttributes.copyFrom(attrs); 771 mWindowAttributes.flags |= compatibleWindowFlag; 772 773 if (newView) { 774 mSoftInputMode = attrs.softInputMode; 775 requestLayout(); 776 } 777 // Don't lose the mode we last auto-computed. 778 if ((attrs.softInputMode&WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 779 == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 780 mWindowAttributes.softInputMode = (mWindowAttributes.softInputMode 781 & ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 782 | (oldSoftInputMode 783 & WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST); 784 } 785 mWindowAttributesChanged = true; 786 scheduleTraversals(); 787 } 788 } 789 790 void handleAppVisibility(boolean visible) { 791 if (mAppVisible != visible) { 792 mAppVisible = visible; 793 scheduleTraversals(); 794 } 795 } 796 797 void handleGetNewSurface() { 798 mNewSurfaceNeeded = true; 799 mFullRedrawNeeded = true; 800 scheduleTraversals(); 801 } 802 803 void handleScreenStateChange(boolean on) { 804 if (on != mAttachInfo.mScreenOn) { 805 mAttachInfo.mScreenOn = on; 806 if (mView != null) { 807 mView.dispatchScreenStateChanged(on ? View.SCREEN_STATE_ON : View.SCREEN_STATE_OFF); 808 } 809 if (on) { 810 mFullRedrawNeeded = true; 811 scheduleTraversals(); 812 } 813 } 814 } 815 816 /** 817 * {@inheritDoc} 818 */ 819 public void requestFitSystemWindows() { 820 checkThread(); 821 mFitSystemWindowsRequested = true; 822 scheduleTraversals(); 823 } 824 825 /** 826 * {@inheritDoc} 827 */ 828 public void requestLayout() { 829 checkThread(); 830 mLayoutRequested = true; 831 scheduleTraversals(); 832 } 833 834 /** 835 * {@inheritDoc} 836 */ 837 public boolean isLayoutRequested() { 838 return mLayoutRequested; 839 } 840 841 void invalidate() { 842 mDirty.set(0, 0, mWidth, mHeight); 843 scheduleTraversals(); 844 } 845 846 void invalidateWorld(View view) { 847 view.invalidate(); 848 if (view instanceof ViewGroup) { 849 ViewGroup parent = (ViewGroup)view; 850 for (int i=0; i<parent.getChildCount(); i++) { 851 invalidateWorld(parent.getChildAt(i)); 852 } 853 } 854 } 855 856 public void invalidateChild(View child, Rect dirty) { 857 invalidateChildInParent(null, dirty); 858 } 859 860 public ViewParent invalidateChildInParent(int[] location, Rect dirty) { 861 checkThread(); 862 if (DEBUG_DRAW) Log.v(TAG, "Invalidate child: " + dirty); 863 864 if (dirty == null) { 865 invalidate(); 866 return null; 867 } 868 869 if (mCurScrollY != 0 || mTranslator != null) { 870 mTempRect.set(dirty); 871 dirty = mTempRect; 872 if (mCurScrollY != 0) { 873 dirty.offset(0, -mCurScrollY); 874 } 875 if (mTranslator != null) { 876 mTranslator.translateRectInAppWindowToScreen(dirty); 877 } 878 if (mAttachInfo.mScalingRequired) { 879 dirty.inset(-1, -1); 880 } 881 } 882 883 final Rect localDirty = mDirty; 884 if (!localDirty.isEmpty() && !localDirty.contains(dirty)) { 885 mAttachInfo.mSetIgnoreDirtyState = true; 886 mAttachInfo.mIgnoreDirtyState = true; 887 } 888 889 // Add the new dirty rect to the current one 890 localDirty.union(dirty.left, dirty.top, dirty.right, dirty.bottom); 891 // Intersect with the bounds of the window to skip 892 // updates that lie outside of the visible region 893 final float appScale = mAttachInfo.mApplicationScale; 894 localDirty.intersect(0, 0, 895 (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 896 897 if (!mWillDrawSoon) { 898 scheduleTraversals(); 899 } 900 901 return null; 902 } 903 904 void setStopped(boolean stopped) { 905 if (mStopped != stopped) { 906 mStopped = stopped; 907 if (!stopped) { 908 scheduleTraversals(); 909 } 910 } 911 } 912 913 public ViewParent getParent() { 914 return null; 915 } 916 917 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 public void bringChildToFront(View child) { 927 } 928 929 int getHostVisibility() { 930 return mAppVisible ? mView.getVisibility() : View.GONE; 931 } 932 933 void disposeResizeBuffer() { 934 if (mResizeBuffer != null) { 935 mResizeBuffer.destroy(); 936 mResizeBuffer = null; 937 } 938 } 939 940 /** 941 * Add LayoutTransition to the list of transitions to be started in the next traversal. 942 * This list will be cleared after the transitions on the list are start()'ed. These 943 * transitionsa re added by LayoutTransition itself when it sets up animations. The setup 944 * happens during the layout phase of traversal, which we want to complete before any of the 945 * animations are started (because those animations may side-effect properties that layout 946 * depends upon, like the bounding rectangles of the affected views). So we add the transition 947 * to the list and it is started just prior to starting the drawing phase of traversal. 948 * 949 * @param transition The LayoutTransition to be started on the next traversal. 950 * 951 * @hide 952 */ 953 public void requestTransitionStart(LayoutTransition transition) { 954 if (mPendingTransitions == null || !mPendingTransitions.contains(transition)) { 955 if (mPendingTransitions == null) { 956 mPendingTransitions = new ArrayList<LayoutTransition>(); 957 } 958 mPendingTransitions.add(transition); 959 } 960 } 961 962 void scheduleTraversals() { 963 if (!mTraversalScheduled) { 964 mTraversalScheduled = true; 965 mTraversalBarrier = mHandler.getLooper().postSyncBarrier(); 966 mChoreographer.postCallback( 967 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 968 scheduleConsumeBatchedInput(); 969 } 970 } 971 972 void unscheduleTraversals() { 973 if (mTraversalScheduled) { 974 mTraversalScheduled = false; 975 mHandler.getLooper().removeSyncBarrier(mTraversalBarrier); 976 mChoreographer.removeCallbacks( 977 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 978 } 979 } 980 981 void doTraversal() { 982 if (mTraversalScheduled) { 983 mTraversalScheduled = false; 984 mHandler.getLooper().removeSyncBarrier(mTraversalBarrier); 985 986 if (mProfile) { 987 Debug.startMethodTracing("ViewAncestor"); 988 } 989 990 final long traversalStartTime; 991 if (ViewDebug.DEBUG_LATENCY) { 992 traversalStartTime = System.nanoTime(); 993 if (mLastTraversalFinishedTimeNanos != 0) { 994 Log.d(ViewDebug.DEBUG_LATENCY_TAG, "Starting performTraversals(); it has been " 995 + ((traversalStartTime - mLastTraversalFinishedTimeNanos) * 0.000001f) 996 + "ms since the last traversals finished."); 997 } else { 998 Log.d(ViewDebug.DEBUG_LATENCY_TAG, "Starting performTraversals()."); 999 } 1000 } 1001 1002 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "performTraversals"); 1003 try { 1004 performTraversals(); 1005 } finally { 1006 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 1007 } 1008 1009 if (ViewDebug.DEBUG_LATENCY) { 1010 long now = System.nanoTime(); 1011 Log.d(ViewDebug.DEBUG_LATENCY_TAG, "performTraversals() took " 1012 + ((now - traversalStartTime) * 0.000001f) 1013 + "ms."); 1014 mLastTraversalFinishedTimeNanos = now; 1015 } 1016 1017 if (mProfile) { 1018 Debug.stopMethodTracing(); 1019 mProfile = false; 1020 } 1021 } 1022 } 1023 1024 private boolean collectViewAttributes() { 1025 final View.AttachInfo attachInfo = mAttachInfo; 1026 if (attachInfo.mRecomputeGlobalAttributes) { 1027 //Log.i(TAG, "Computing view hierarchy attributes!"); 1028 attachInfo.mRecomputeGlobalAttributes = false; 1029 boolean oldScreenOn = attachInfo.mKeepScreenOn; 1030 int oldVis = attachInfo.mSystemUiVisibility; 1031 boolean oldHasSystemUiListeners = attachInfo.mHasSystemUiListeners; 1032 attachInfo.mKeepScreenOn = false; 1033 attachInfo.mSystemUiVisibility = 0; 1034 attachInfo.mHasSystemUiListeners = false; 1035 mView.dispatchCollectViewAttributes(attachInfo, 0); 1036 attachInfo.mSystemUiVisibility &= ~attachInfo.mDisabledSystemUiVisibility; 1037 if (attachInfo.mKeepScreenOn != oldScreenOn 1038 || attachInfo.mSystemUiVisibility != oldVis 1039 || attachInfo.mHasSystemUiListeners != oldHasSystemUiListeners) { 1040 WindowManager.LayoutParams params = mWindowAttributes; 1041 if (attachInfo.mKeepScreenOn) { 1042 params.flags |= WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON; 1043 } 1044 params.subtreeSystemUiVisibility = attachInfo.mSystemUiVisibility; 1045 params.hasSystemUiListeners = attachInfo.mHasSystemUiListeners; 1046 mView.dispatchWindowSystemUiVisiblityChanged(attachInfo.mSystemUiVisibility); 1047 return true; 1048 } 1049 } 1050 return false; 1051 } 1052 1053 private boolean measureHierarchy(final View host, final WindowManager.LayoutParams lp, 1054 final Resources res, final int desiredWindowWidth, final int desiredWindowHeight) { 1055 int childWidthMeasureSpec; 1056 int childHeightMeasureSpec; 1057 boolean windowSizeMayChange = false; 1058 1059 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) Log.v(TAG, 1060 "Measuring " + host + " in display " + desiredWindowWidth 1061 + "x" + desiredWindowHeight + "..."); 1062 1063 boolean goodMeasure = false; 1064 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT) { 1065 // On large screens, we don't want to allow dialogs to just 1066 // stretch to fill the entire width of the screen to display 1067 // one line of text. First try doing the layout at a smaller 1068 // size to see if it will fit. 1069 final DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1070 res.getValue(com.android.internal.R.dimen.config_prefDialogWidth, mTmpValue, true); 1071 int baseSize = 0; 1072 if (mTmpValue.type == TypedValue.TYPE_DIMENSION) { 1073 baseSize = (int)mTmpValue.getDimension(packageMetrics); 1074 } 1075 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": baseSize=" + baseSize); 1076 if (baseSize != 0 && desiredWindowWidth > baseSize) { 1077 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1078 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1079 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1080 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": measured (" 1081 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1082 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1083 goodMeasure = true; 1084 } else { 1085 // Didn't fit in that size... try expanding a bit. 1086 baseSize = (baseSize+desiredWindowWidth)/2; 1087 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": next baseSize=" 1088 + baseSize); 1089 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1090 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1091 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": measured (" 1092 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1093 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1094 if (DEBUG_DIALOG) Log.v(TAG, "Good!"); 1095 goodMeasure = true; 1096 } 1097 } 1098 } 1099 } 1100 1101 if (!goodMeasure) { 1102 childWidthMeasureSpec = getRootMeasureSpec(desiredWindowWidth, lp.width); 1103 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1104 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1105 if (mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) { 1106 windowSizeMayChange = true; 1107 } 1108 } 1109 1110 if (DBG) { 1111 System.out.println("======================================"); 1112 System.out.println("performTraversals -- after measure"); 1113 host.debug(); 1114 } 1115 1116 return windowSizeMayChange; 1117 } 1118 1119 private void performTraversals() { 1120 // cache mView since it is used so much below... 1121 final View host = mView; 1122 1123 if (DBG) { 1124 System.out.println("======================================"); 1125 System.out.println("performTraversals"); 1126 host.debug(); 1127 } 1128 1129 if (host == null || !mAdded) 1130 return; 1131 1132 mWillDrawSoon = true; 1133 boolean windowSizeMayChange = false; 1134 boolean newSurface = false; 1135 boolean surfaceChanged = false; 1136 WindowManager.LayoutParams lp = mWindowAttributes; 1137 1138 int desiredWindowWidth; 1139 int desiredWindowHeight; 1140 1141 final View.AttachInfo attachInfo = mAttachInfo; 1142 1143 final int viewVisibility = getHostVisibility(); 1144 boolean viewVisibilityChanged = mViewVisibility != viewVisibility 1145 || mNewSurfaceNeeded; 1146 1147 WindowManager.LayoutParams params = null; 1148 if (mWindowAttributesChanged) { 1149 mWindowAttributesChanged = false; 1150 surfaceChanged = true; 1151 params = lp; 1152 } 1153 CompatibilityInfo compatibilityInfo = mCompatibilityInfo.get(); 1154 if (compatibilityInfo.supportsScreen() == mLastInCompatMode) { 1155 params = lp; 1156 mFullRedrawNeeded = true; 1157 mLayoutRequested = true; 1158 if (mLastInCompatMode) { 1159 params.flags &= ~WindowManager.LayoutParams.FLAG_COMPATIBLE_WINDOW; 1160 mLastInCompatMode = false; 1161 } else { 1162 params.flags |= WindowManager.LayoutParams.FLAG_COMPATIBLE_WINDOW; 1163 mLastInCompatMode = true; 1164 } 1165 } 1166 1167 mWindowAttributesChangesFlag = 0; 1168 1169 Rect frame = mWinFrame; 1170 if (mFirst) { 1171 mFullRedrawNeeded = true; 1172 mLayoutRequested = true; 1173 1174 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL) { 1175 // NOTE -- system code, won't try to do compat mode. 1176 Display disp = WindowManagerImpl.getDefault().getDefaultDisplay(); 1177 Point size = new Point(); 1178 disp.getRealSize(size); 1179 desiredWindowWidth = size.x; 1180 desiredWindowHeight = size.y; 1181 } else { 1182 DisplayMetrics packageMetrics = 1183 mView.getContext().getResources().getDisplayMetrics(); 1184 desiredWindowWidth = packageMetrics.widthPixels; 1185 desiredWindowHeight = packageMetrics.heightPixels; 1186 } 1187 1188 // For the very first time, tell the view hierarchy that it 1189 // is attached to the window. Note that at this point the surface 1190 // object is not initialized to its backing store, but soon it 1191 // will be (assuming the window is visible). 1192 attachInfo.mSurface = mSurface; 1193 // We used to use the following condition to choose 32 bits drawing caches: 1194 // PixelFormat.hasAlpha(lp.format) || lp.format == PixelFormat.RGBX_8888 1195 // However, windows are now always 32 bits by default, so choose 32 bits 1196 attachInfo.mUse32BitDrawingCache = true; 1197 attachInfo.mHasWindowFocus = false; 1198 attachInfo.mWindowVisibility = viewVisibility; 1199 attachInfo.mRecomputeGlobalAttributes = false; 1200 viewVisibilityChanged = false; 1201 mLastConfiguration.setTo(host.getResources().getConfiguration()); 1202 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1203 host.dispatchAttachedToWindow(attachInfo, 0); 1204 mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets); 1205 host.fitSystemWindows(mFitSystemWindowsInsets); 1206 //Log.i(TAG, "Screen on initialized: " + attachInfo.mKeepScreenOn); 1207 1208 } else { 1209 desiredWindowWidth = frame.width(); 1210 desiredWindowHeight = frame.height(); 1211 if (desiredWindowWidth != mWidth || desiredWindowHeight != mHeight) { 1212 if (DEBUG_ORIENTATION) Log.v(TAG, 1213 "View " + host + " resized to: " + frame); 1214 mFullRedrawNeeded = true; 1215 mLayoutRequested = true; 1216 windowSizeMayChange = true; 1217 } 1218 } 1219 1220 if (viewVisibilityChanged) { 1221 attachInfo.mWindowVisibility = viewVisibility; 1222 host.dispatchWindowVisibilityChanged(viewVisibility); 1223 if (viewVisibility != View.VISIBLE || mNewSurfaceNeeded) { 1224 destroyHardwareResources(); 1225 } 1226 if (viewVisibility == View.GONE) { 1227 // After making a window gone, we will count it as being 1228 // shown for the first time the next time it gets focus. 1229 mHasHadWindowFocus = false; 1230 } 1231 } 1232 1233 // Execute enqueued actions on every traversal in case a detached view enqueued an action 1234 getRunQueue().executeActions(attachInfo.mHandler); 1235 1236 boolean insetsChanged = false; 1237 1238 boolean layoutRequested = mLayoutRequested && !mStopped; 1239 if (layoutRequested) { 1240 1241 final Resources res = mView.getContext().getResources(); 1242 1243 if (mFirst) { 1244 // make sure touch mode code executes by setting cached value 1245 // to opposite of the added touch mode. 1246 mAttachInfo.mInTouchMode = !mAddedTouchMode; 1247 ensureTouchModeLocally(mAddedTouchMode); 1248 } else { 1249 if (!mPendingContentInsets.equals(mAttachInfo.mContentInsets)) { 1250 insetsChanged = true; 1251 } 1252 if (!mPendingVisibleInsets.equals(mAttachInfo.mVisibleInsets)) { 1253 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1254 if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: " 1255 + mAttachInfo.mVisibleInsets); 1256 } 1257 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT 1258 || lp.height == ViewGroup.LayoutParams.WRAP_CONTENT) { 1259 windowSizeMayChange = true; 1260 1261 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL) { 1262 // NOTE -- system code, won't try to do compat mode. 1263 Display disp = WindowManagerImpl.getDefault().getDefaultDisplay(); 1264 Point size = new Point(); 1265 disp.getRealSize(size); 1266 desiredWindowWidth = size.x; 1267 desiredWindowHeight = size.y; 1268 } else { 1269 DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1270 desiredWindowWidth = packageMetrics.widthPixels; 1271 desiredWindowHeight = packageMetrics.heightPixels; 1272 } 1273 } 1274 } 1275 1276 // Ask host how big it wants to be 1277 windowSizeMayChange |= measureHierarchy(host, lp, res, 1278 desiredWindowWidth, desiredWindowHeight); 1279 } 1280 1281 if (collectViewAttributes()) { 1282 params = lp; 1283 } 1284 if (attachInfo.mForceReportNewAttributes) { 1285 attachInfo.mForceReportNewAttributes = false; 1286 params = lp; 1287 } 1288 1289 if (mFirst || attachInfo.mViewVisibilityChanged) { 1290 attachInfo.mViewVisibilityChanged = false; 1291 int resizeMode = mSoftInputMode & 1292 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST; 1293 // If we are in auto resize mode, then we need to determine 1294 // what mode to use now. 1295 if (resizeMode == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 1296 final int N = attachInfo.mScrollContainers.size(); 1297 for (int i=0; i<N; i++) { 1298 if (attachInfo.mScrollContainers.get(i).isShown()) { 1299 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE; 1300 } 1301 } 1302 if (resizeMode == 0) { 1303 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_PAN; 1304 } 1305 if ((lp.softInputMode & 1306 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) != resizeMode) { 1307 lp.softInputMode = (lp.softInputMode & 1308 ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) | 1309 resizeMode; 1310 params = lp; 1311 } 1312 } 1313 } 1314 1315 if (params != null && (host.mPrivateFlags & View.REQUEST_TRANSPARENT_REGIONS) != 0) { 1316 if (!PixelFormat.formatHasAlpha(params.format)) { 1317 params.format = PixelFormat.TRANSLUCENT; 1318 } 1319 } 1320 1321 if (mFitSystemWindowsRequested) { 1322 mFitSystemWindowsRequested = false; 1323 mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets); 1324 host.fitSystemWindows(mFitSystemWindowsInsets); 1325 if (mLayoutRequested) { 1326 // Short-circuit catching a new layout request here, so 1327 // we don't need to go through two layout passes when things 1328 // change due to fitting system windows, which can happen a lot. 1329 windowSizeMayChange |= measureHierarchy(host, lp, 1330 mView.getContext().getResources(), 1331 desiredWindowWidth, desiredWindowHeight); 1332 } 1333 } 1334 1335 if (layoutRequested) { 1336 // Clear this now, so that if anything requests a layout in the 1337 // rest of this function we will catch it and re-run a full 1338 // layout pass. 1339 mLayoutRequested = false; 1340 } 1341 1342 boolean windowShouldResize = layoutRequested && windowSizeMayChange 1343 && ((mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) 1344 || (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT && 1345 frame.width() < desiredWindowWidth && frame.width() != mWidth) 1346 || (lp.height == ViewGroup.LayoutParams.WRAP_CONTENT && 1347 frame.height() < desiredWindowHeight && frame.height() != mHeight)); 1348 1349 final boolean computesInternalInsets = 1350 attachInfo.mTreeObserver.hasComputeInternalInsetsListeners(); 1351 1352 boolean insetsPending = false; 1353 int relayoutResult = 0; 1354 1355 if (mFirst || windowShouldResize || insetsChanged || 1356 viewVisibilityChanged || params != null) { 1357 1358 if (viewVisibility == View.VISIBLE) { 1359 // If this window is giving internal insets to the window 1360 // manager, and it is being added or changing its visibility, 1361 // then we want to first give the window manager "fake" 1362 // insets to cause it to effectively ignore the content of 1363 // the window during layout. This avoids it briefly causing 1364 // other windows to resize/move based on the raw frame of the 1365 // window, waiting until we can finish laying out this window 1366 // and get back to the window manager with the ultimately 1367 // computed insets. 1368 insetsPending = computesInternalInsets && (mFirst || viewVisibilityChanged); 1369 } 1370 1371 if (mSurfaceHolder != null) { 1372 mSurfaceHolder.mSurfaceLock.lock(); 1373 mDrawingAllowed = true; 1374 } 1375 1376 boolean hwInitialized = false; 1377 boolean contentInsetsChanged = false; 1378 boolean visibleInsetsChanged; 1379 boolean hadSurface = mSurface.isValid(); 1380 1381 try { 1382 if (DEBUG_LAYOUT) { 1383 Log.i(TAG, "host=w:" + host.getMeasuredWidth() + ", h:" + 1384 host.getMeasuredHeight() + ", params=" + params); 1385 } 1386 1387 final int surfaceGenerationId = mSurface.getGenerationId(); 1388 relayoutResult = relayoutWindow(params, viewVisibility, insetsPending); 1389 1390 if (DEBUG_LAYOUT) Log.v(TAG, "relayout: frame=" + frame.toShortString() 1391 + " content=" + mPendingContentInsets.toShortString() 1392 + " visible=" + mPendingVisibleInsets.toShortString() 1393 + " surface=" + mSurface); 1394 1395 if (mPendingConfiguration.seq != 0) { 1396 if (DEBUG_CONFIGURATION) Log.v(TAG, "Visible with new config: " 1397 + mPendingConfiguration); 1398 updateConfiguration(mPendingConfiguration, !mFirst); 1399 mPendingConfiguration.seq = 0; 1400 } 1401 1402 contentInsetsChanged = !mPendingContentInsets.equals( 1403 mAttachInfo.mContentInsets); 1404 visibleInsetsChanged = !mPendingVisibleInsets.equals( 1405 mAttachInfo.mVisibleInsets); 1406 if (contentInsetsChanged) { 1407 if (mWidth > 0 && mHeight > 0 && lp != null && 1408 ((lp.systemUiVisibility|lp.subtreeSystemUiVisibility) 1409 & View.SYSTEM_UI_LAYOUT_FLAGS) == 0 && 1410 mSurface != null && mSurface.isValid() && 1411 !mAttachInfo.mTurnOffWindowResizeAnim && 1412 mAttachInfo.mHardwareRenderer != null && 1413 mAttachInfo.mHardwareRenderer.isEnabled() && 1414 mAttachInfo.mHardwareRenderer.validate() && 1415 lp != null && !PixelFormat.formatHasAlpha(lp.format)) { 1416 1417 disposeResizeBuffer(); 1418 1419 boolean completed = false; 1420 HardwareCanvas hwRendererCanvas = mAttachInfo.mHardwareRenderer.getCanvas(); 1421 HardwareCanvas layerCanvas = null; 1422 try { 1423 if (mResizeBuffer == null) { 1424 mResizeBuffer = mAttachInfo.mHardwareRenderer.createHardwareLayer( 1425 mWidth, mHeight, false); 1426 } else if (mResizeBuffer.getWidth() != mWidth || 1427 mResizeBuffer.getHeight() != mHeight) { 1428 mResizeBuffer.resize(mWidth, mHeight); 1429 } 1430 layerCanvas = mResizeBuffer.start(hwRendererCanvas); 1431 layerCanvas.setViewport(mWidth, mHeight); 1432 layerCanvas.onPreDraw(null); 1433 final int restoreCount = layerCanvas.save(); 1434 1435 layerCanvas.drawColor(0xff000000, PorterDuff.Mode.SRC); 1436 1437 int yoff; 1438 final boolean scrolling = mScroller != null 1439 && mScroller.computeScrollOffset(); 1440 if (scrolling) { 1441 yoff = mScroller.getCurrY(); 1442 mScroller.abortAnimation(); 1443 } else { 1444 yoff = mScrollY; 1445 } 1446 1447 layerCanvas.translate(0, -yoff); 1448 if (mTranslator != null) { 1449 mTranslator.translateCanvas(layerCanvas); 1450 } 1451 1452 mView.draw(layerCanvas); 1453 1454 drawAccessibilityFocusedDrawableIfNeeded(layerCanvas); 1455 1456 mResizeBufferStartTime = SystemClock.uptimeMillis(); 1457 mResizeBufferDuration = mView.getResources().getInteger( 1458 com.android.internal.R.integer.config_mediumAnimTime); 1459 completed = true; 1460 1461 layerCanvas.restoreToCount(restoreCount); 1462 } catch (OutOfMemoryError e) { 1463 Log.w(TAG, "Not enough memory for content change anim buffer", e); 1464 } finally { 1465 if (layerCanvas != null) { 1466 layerCanvas.onPostDraw(); 1467 } 1468 if (mResizeBuffer != null) { 1469 mResizeBuffer.end(hwRendererCanvas); 1470 if (!completed) { 1471 mResizeBuffer.destroy(); 1472 mResizeBuffer = null; 1473 } 1474 } 1475 } 1476 } 1477 mAttachInfo.mContentInsets.set(mPendingContentInsets); 1478 if (DEBUG_LAYOUT) Log.v(TAG, "Content insets changing to: " 1479 + mAttachInfo.mContentInsets); 1480 } 1481 if (contentInsetsChanged || mLastSystemUiVisibility != 1482 mAttachInfo.mSystemUiVisibility || mFitSystemWindowsRequested) { 1483 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1484 mFitSystemWindowsRequested = false; 1485 mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets); 1486 host.fitSystemWindows(mFitSystemWindowsInsets); 1487 } 1488 if (visibleInsetsChanged) { 1489 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1490 if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: " 1491 + mAttachInfo.mVisibleInsets); 1492 } 1493 1494 if (!hadSurface) { 1495 if (mSurface.isValid()) { 1496 // If we are creating a new surface, then we need to 1497 // completely redraw it. Also, when we get to the 1498 // point of drawing it we will hold off and schedule 1499 // a new traversal instead. This is so we can tell the 1500 // window manager about all of the windows being displayed 1501 // before actually drawing them, so it can display then 1502 // all at once. 1503 newSurface = true; 1504 mFullRedrawNeeded = true; 1505 mPreviousTransparentRegion.setEmpty(); 1506 1507 if (mAttachInfo.mHardwareRenderer != null) { 1508 try { 1509 hwInitialized = mAttachInfo.mHardwareRenderer.initialize(mHolder); 1510 } catch (Surface.OutOfResourcesException e) { 1511 Log.e(TAG, "OutOfResourcesException initializing HW surface", e); 1512 try { 1513 if (!sWindowSession.outOfMemory(mWindow)) { 1514 Slog.w(TAG, "No processes killed for memory; killing self"); 1515 Process.killProcess(Process.myPid()); 1516 } 1517 } catch (RemoteException ex) { 1518 } 1519 mLayoutRequested = true; // ask wm for a new surface next time. 1520 return; 1521 } 1522 } 1523 } 1524 } else if (!mSurface.isValid()) { 1525 // If the surface has been removed, then reset the scroll 1526 // positions. 1527 mLastScrolledFocus = null; 1528 mScrollY = mCurScrollY = 0; 1529 if (mScroller != null) { 1530 mScroller.abortAnimation(); 1531 } 1532 disposeResizeBuffer(); 1533 // Our surface is gone 1534 if (mAttachInfo.mHardwareRenderer != null && 1535 mAttachInfo.mHardwareRenderer.isEnabled()) { 1536 mAttachInfo.mHardwareRenderer.destroy(true); 1537 } 1538 } else if (surfaceGenerationId != mSurface.getGenerationId() && 1539 mSurfaceHolder == null && mAttachInfo.mHardwareRenderer != null) { 1540 mFullRedrawNeeded = true; 1541 try { 1542 mAttachInfo.mHardwareRenderer.updateSurface(mHolder); 1543 } catch (Surface.OutOfResourcesException e) { 1544 Log.e(TAG, "OutOfResourcesException updating HW surface", e); 1545 try { 1546 if (!sWindowSession.outOfMemory(mWindow)) { 1547 Slog.w(TAG, "No processes killed for memory; killing self"); 1548 Process.killProcess(Process.myPid()); 1549 } 1550 } catch (RemoteException ex) { 1551 } 1552 mLayoutRequested = true; // ask wm for a new surface next time. 1553 return; 1554 } 1555 } 1556 } catch (RemoteException e) { 1557 } 1558 1559 if (DEBUG_ORIENTATION) Log.v( 1560 TAG, "Relayout returned: frame=" + frame + ", surface=" + mSurface); 1561 1562 attachInfo.mWindowLeft = frame.left; 1563 attachInfo.mWindowTop = frame.top; 1564 1565 // !!FIXME!! This next section handles the case where we did not get the 1566 // window size we asked for. We should avoid this by getting a maximum size from 1567 // the window session beforehand. 1568 if (mWidth != frame.width() || mHeight != frame.height()) { 1569 mWidth = frame.width(); 1570 mHeight = frame.height(); 1571 } 1572 1573 if (mSurfaceHolder != null) { 1574 // The app owns the surface; tell it about what is going on. 1575 if (mSurface.isValid()) { 1576 // XXX .copyFrom() doesn't work! 1577 //mSurfaceHolder.mSurface.copyFrom(mSurface); 1578 mSurfaceHolder.mSurface = mSurface; 1579 } 1580 mSurfaceHolder.setSurfaceFrameSize(mWidth, mHeight); 1581 mSurfaceHolder.mSurfaceLock.unlock(); 1582 if (mSurface.isValid()) { 1583 if (!hadSurface) { 1584 mSurfaceHolder.ungetCallbacks(); 1585 1586 mIsCreating = true; 1587 mSurfaceHolderCallback.surfaceCreated(mSurfaceHolder); 1588 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1589 if (callbacks != null) { 1590 for (SurfaceHolder.Callback c : callbacks) { 1591 c.surfaceCreated(mSurfaceHolder); 1592 } 1593 } 1594 surfaceChanged = true; 1595 } 1596 if (surfaceChanged) { 1597 mSurfaceHolderCallback.surfaceChanged(mSurfaceHolder, 1598 lp.format, mWidth, mHeight); 1599 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1600 if (callbacks != null) { 1601 for (SurfaceHolder.Callback c : callbacks) { 1602 c.surfaceChanged(mSurfaceHolder, lp.format, 1603 mWidth, mHeight); 1604 } 1605 } 1606 } 1607 mIsCreating = false; 1608 } else if (hadSurface) { 1609 mSurfaceHolder.ungetCallbacks(); 1610 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1611 mSurfaceHolderCallback.surfaceDestroyed(mSurfaceHolder); 1612 if (callbacks != null) { 1613 for (SurfaceHolder.Callback c : callbacks) { 1614 c.surfaceDestroyed(mSurfaceHolder); 1615 } 1616 } 1617 mSurfaceHolder.mSurfaceLock.lock(); 1618 try { 1619 mSurfaceHolder.mSurface = new Surface(); 1620 } finally { 1621 mSurfaceHolder.mSurfaceLock.unlock(); 1622 } 1623 } 1624 } 1625 1626 if (mAttachInfo.mHardwareRenderer != null && 1627 mAttachInfo.mHardwareRenderer.isEnabled()) { 1628 if (hwInitialized || windowShouldResize || 1629 mWidth != mAttachInfo.mHardwareRenderer.getWidth() || 1630 mHeight != mAttachInfo.mHardwareRenderer.getHeight()) { 1631 mAttachInfo.mHardwareRenderer.setup(mWidth, mHeight); 1632 if (!hwInitialized) { 1633 mAttachInfo.mHardwareRenderer.invalidate(mHolder); 1634 } 1635 } 1636 } 1637 1638 if (!mStopped) { 1639 boolean focusChangedDueToTouchMode = ensureTouchModeLocally( 1640 (relayoutResult&WindowManagerImpl.RELAYOUT_RES_IN_TOUCH_MODE) != 0); 1641 if (focusChangedDueToTouchMode || mWidth != host.getMeasuredWidth() 1642 || mHeight != host.getMeasuredHeight() || contentInsetsChanged) { 1643 int childWidthMeasureSpec = getRootMeasureSpec(mWidth, lp.width); 1644 int childHeightMeasureSpec = getRootMeasureSpec(mHeight, lp.height); 1645 1646 if (DEBUG_LAYOUT) Log.v(TAG, "Ooops, something changed! mWidth=" 1647 + mWidth + " measuredWidth=" + host.getMeasuredWidth() 1648 + " mHeight=" + mHeight 1649 + " measuredHeight=" + host.getMeasuredHeight() 1650 + " coveredInsetsChanged=" + contentInsetsChanged); 1651 1652 // Ask host how big it wants to be 1653 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1654 1655 // Implementation of weights from WindowManager.LayoutParams 1656 // We just grow the dimensions as needed and re-measure if 1657 // needs be 1658 int width = host.getMeasuredWidth(); 1659 int height = host.getMeasuredHeight(); 1660 boolean measureAgain = false; 1661 1662 if (lp.horizontalWeight > 0.0f) { 1663 width += (int) ((mWidth - width) * lp.horizontalWeight); 1664 childWidthMeasureSpec = MeasureSpec.makeMeasureSpec(width, 1665 MeasureSpec.EXACTLY); 1666 measureAgain = true; 1667 } 1668 if (lp.verticalWeight > 0.0f) { 1669 height += (int) ((mHeight - height) * lp.verticalWeight); 1670 childHeightMeasureSpec = MeasureSpec.makeMeasureSpec(height, 1671 MeasureSpec.EXACTLY); 1672 measureAgain = true; 1673 } 1674 1675 if (measureAgain) { 1676 if (DEBUG_LAYOUT) Log.v(TAG, 1677 "And hey let's measure once more: width=" + width 1678 + " height=" + height); 1679 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1680 } 1681 1682 layoutRequested = true; 1683 } 1684 } 1685 } 1686 1687 final boolean didLayout = layoutRequested && !mStopped; 1688 boolean triggerGlobalLayoutListener = didLayout 1689 || attachInfo.mRecomputeGlobalAttributes; 1690 if (didLayout) { 1691 performLayout(); 1692 1693 // By this point all views have been sized and positionned 1694 // We can compute the transparent area 1695 1696 if ((host.mPrivateFlags & View.REQUEST_TRANSPARENT_REGIONS) != 0) { 1697 // start out transparent 1698 // TODO: AVOID THAT CALL BY CACHING THE RESULT? 1699 host.getLocationInWindow(mTmpLocation); 1700 mTransparentRegion.set(mTmpLocation[0], mTmpLocation[1], 1701 mTmpLocation[0] + host.mRight - host.mLeft, 1702 mTmpLocation[1] + host.mBottom - host.mTop); 1703 1704 host.gatherTransparentRegion(mTransparentRegion); 1705 if (mTranslator != null) { 1706 mTranslator.translateRegionInWindowToScreen(mTransparentRegion); 1707 } 1708 1709 if (!mTransparentRegion.equals(mPreviousTransparentRegion)) { 1710 mPreviousTransparentRegion.set(mTransparentRegion); 1711 // reconfigure window manager 1712 try { 1713 sWindowSession.setTransparentRegion(mWindow, mTransparentRegion); 1714 } catch (RemoteException e) { 1715 } 1716 } 1717 } 1718 1719 if (DBG) { 1720 System.out.println("======================================"); 1721 System.out.println("performTraversals -- after setFrame"); 1722 host.debug(); 1723 } 1724 } 1725 1726 if (triggerGlobalLayoutListener) { 1727 attachInfo.mRecomputeGlobalAttributes = false; 1728 attachInfo.mTreeObserver.dispatchOnGlobalLayout(); 1729 1730 if (AccessibilityManager.getInstance(host.mContext).isEnabled()) { 1731 postSendWindowContentChangedCallback(mView); 1732 } 1733 } 1734 1735 if (computesInternalInsets) { 1736 // Clear the original insets. 1737 final ViewTreeObserver.InternalInsetsInfo insets = attachInfo.mGivenInternalInsets; 1738 insets.reset(); 1739 1740 // Compute new insets in place. 1741 attachInfo.mTreeObserver.dispatchOnComputeInternalInsets(insets); 1742 1743 // Tell the window manager. 1744 if (insetsPending || !mLastGivenInsets.equals(insets)) { 1745 mLastGivenInsets.set(insets); 1746 1747 // Translate insets to screen coordinates if needed. 1748 final Rect contentInsets; 1749 final Rect visibleInsets; 1750 final Region touchableRegion; 1751 if (mTranslator != null) { 1752 contentInsets = mTranslator.getTranslatedContentInsets(insets.contentInsets); 1753 visibleInsets = mTranslator.getTranslatedVisibleInsets(insets.visibleInsets); 1754 touchableRegion = mTranslator.getTranslatedTouchableArea(insets.touchableRegion); 1755 } else { 1756 contentInsets = insets.contentInsets; 1757 visibleInsets = insets.visibleInsets; 1758 touchableRegion = insets.touchableRegion; 1759 } 1760 1761 try { 1762 sWindowSession.setInsets(mWindow, insets.mTouchableInsets, 1763 contentInsets, visibleInsets, touchableRegion); 1764 } catch (RemoteException e) { 1765 } 1766 } 1767 } 1768 1769 boolean skipDraw = false; 1770 1771 if (mFirst) { 1772 // handle first focus request 1773 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: mView.hasFocus()=" 1774 + mView.hasFocus()); 1775 if (mView != null) { 1776 if (!mView.hasFocus()) { 1777 mView.requestFocus(View.FOCUS_FORWARD); 1778 mFocusedView = mRealFocusedView = mView.findFocus(); 1779 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: requested focused view=" 1780 + mFocusedView); 1781 } else { 1782 mRealFocusedView = mView.findFocus(); 1783 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: existing focused view=" 1784 + mRealFocusedView); 1785 } 1786 } 1787 if ((relayoutResult&WindowManagerImpl.RELAYOUT_RES_ANIMATING) != 0) { 1788 // The first time we relayout the window, if the system is 1789 // doing window animations, we want to hold of on any future 1790 // draws until the animation is done. 1791 mWindowsAnimating = true; 1792 } 1793 } else if (mWindowsAnimating) { 1794 skipDraw = true; 1795 } 1796 1797 mFirst = false; 1798 mWillDrawSoon = false; 1799 mNewSurfaceNeeded = false; 1800 mViewVisibility = viewVisibility; 1801 1802 if (mAttachInfo.mHasWindowFocus) { 1803 final boolean imTarget = WindowManager.LayoutParams 1804 .mayUseInputMethod(mWindowAttributes.flags); 1805 if (imTarget != mLastWasImTarget) { 1806 mLastWasImTarget = imTarget; 1807 InputMethodManager imm = InputMethodManager.peekInstance(); 1808 if (imm != null && imTarget) { 1809 imm.startGettingWindowFocus(mView); 1810 imm.onWindowFocus(mView, mView.findFocus(), 1811 mWindowAttributes.softInputMode, 1812 !mHasHadWindowFocus, mWindowAttributes.flags); 1813 } 1814 } 1815 } 1816 1817 // Remember if we must report the next draw. 1818 if ((relayoutResult & WindowManagerImpl.RELAYOUT_RES_FIRST_TIME) != 0) { 1819 mReportNextDraw = true; 1820 } 1821 1822 boolean cancelDraw = attachInfo.mTreeObserver.dispatchOnPreDraw() || 1823 viewVisibility != View.VISIBLE; 1824 1825 if (!cancelDraw && !newSurface) { 1826 if (!skipDraw || mReportNextDraw) { 1827 if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 1828 for (int i = 0; i < mPendingTransitions.size(); ++i) { 1829 mPendingTransitions.get(i).startChangingAnimations(); 1830 } 1831 mPendingTransitions.clear(); 1832 } 1833 1834 performDraw(); 1835 } 1836 } else { 1837 if (viewVisibility == View.VISIBLE) { 1838 // Try again 1839 scheduleTraversals(); 1840 } else if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 1841 for (int i = 0; i < mPendingTransitions.size(); ++i) { 1842 mPendingTransitions.get(i).endChangingAnimations(); 1843 } 1844 mPendingTransitions.clear(); 1845 } 1846 } 1847 } 1848 1849 private void performMeasure(int childWidthMeasureSpec, int childHeightMeasureSpec) { 1850 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "measure"); 1851 try { 1852 mView.measure(childWidthMeasureSpec, childHeightMeasureSpec); 1853 } finally { 1854 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 1855 } 1856 } 1857 1858 private void performLayout() { 1859 mLayoutRequested = false; 1860 mScrollMayChange = true; 1861 1862 final View host = mView; 1863 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) { 1864 Log.v(TAG, "Laying out " + host + " to (" + 1865 host.getMeasuredWidth() + ", " + host.getMeasuredHeight() + ")"); 1866 } 1867 1868 final long startTime; 1869 if (ViewDebug.DEBUG_PROFILE_LAYOUT) { 1870 startTime = SystemClock.elapsedRealtime(); 1871 } 1872 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "layout"); 1873 try { 1874 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 1875 } finally { 1876 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 1877 } 1878 1879 if (ViewDebug.DEBUG_PROFILE_LAYOUT) { 1880 EventLog.writeEvent(60001, SystemClock.elapsedRealtime() - startTime); 1881 } 1882 1883 if (false && ViewDebug.consistencyCheckEnabled) { 1884 if (!host.dispatchConsistencyCheck(ViewDebug.CONSISTENCY_LAYOUT)) { 1885 throw new IllegalStateException("The view hierarchy is an inconsistent state," 1886 + "please refer to the logs with the tag " 1887 + ViewDebug.CONSISTENCY_LOG_TAG + " for more infomation."); 1888 } 1889 } 1890 } 1891 1892 public void requestTransparentRegion(View child) { 1893 // the test below should not fail unless someone is messing with us 1894 checkThread(); 1895 if (mView == child) { 1896 mView.mPrivateFlags |= View.REQUEST_TRANSPARENT_REGIONS; 1897 // Need to make sure we re-evaluate the window attributes next 1898 // time around, to ensure the window has the correct format. 1899 mWindowAttributesChanged = true; 1900 mWindowAttributesChangesFlag = 0; 1901 requestLayout(); 1902 } 1903 } 1904 1905 /** 1906 * Figures out the measure spec for the root view in a window based on it's 1907 * layout params. 1908 * 1909 * @param windowSize 1910 * The available width or height of the window 1911 * 1912 * @param rootDimension 1913 * The layout params for one dimension (width or height) of the 1914 * window. 1915 * 1916 * @return The measure spec to use to measure the root view. 1917 */ 1918 private static int getRootMeasureSpec(int windowSize, int rootDimension) { 1919 int measureSpec; 1920 switch (rootDimension) { 1921 1922 case ViewGroup.LayoutParams.MATCH_PARENT: 1923 // Window can't resize. Force root view to be windowSize. 1924 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.EXACTLY); 1925 break; 1926 case ViewGroup.LayoutParams.WRAP_CONTENT: 1927 // Window can resize. Set max size for root view. 1928 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.AT_MOST); 1929 break; 1930 default: 1931 // Window wants to be an exact size. Force root view to be that size. 1932 measureSpec = MeasureSpec.makeMeasureSpec(rootDimension, MeasureSpec.EXACTLY); 1933 break; 1934 } 1935 return measureSpec; 1936 } 1937 1938 int mHardwareYOffset; 1939 int mResizeAlpha; 1940 final Paint mResizePaint = new Paint(); 1941 1942 public void onHardwarePreDraw(HardwareCanvas canvas) { 1943 canvas.translate(0, -mHardwareYOffset); 1944 } 1945 1946 public void onHardwarePostDraw(HardwareCanvas canvas) { 1947 if (mResizeBuffer != null) { 1948 mResizePaint.setAlpha(mResizeAlpha); 1949 canvas.drawHardwareLayer(mResizeBuffer, 0.0f, mHardwareYOffset, mResizePaint); 1950 } 1951 drawAccessibilityFocusedDrawableIfNeeded(canvas); 1952 } 1953 1954 /** 1955 * @hide 1956 */ 1957 void outputDisplayList(View view) { 1958 if (mAttachInfo != null && mAttachInfo.mHardwareCanvas != null) { 1959 DisplayList displayList = view.getDisplayList(); 1960 if (displayList != null) { 1961 mAttachInfo.mHardwareCanvas.outputDisplayList(displayList); 1962 } 1963 } 1964 } 1965 1966 /** 1967 * @see #PROPERTY_PROFILE_RENDERING 1968 */ 1969 private void profileRendering(boolean enabled) { 1970 if (mProfileRendering) { 1971 mRenderProfilingEnabled = enabled; 1972 if (mRenderProfiler == null) { 1973 mRenderProfiler = new Thread(new Runnable() { 1974 @Override 1975 public void run() { 1976 Log.d(TAG, "Starting profiling thread"); 1977 while (mRenderProfilingEnabled) { 1978 mAttachInfo.mHandler.post(new Runnable() { 1979 @Override 1980 public void run() { 1981 mDirty.set(0, 0, mWidth, mHeight); 1982 scheduleTraversals(); 1983 } 1984 }); 1985 try { 1986 // TODO: This should use vsync when we get an API 1987 Thread.sleep(15); 1988 } catch (InterruptedException e) { 1989 Log.d(TAG, "Exiting profiling thread"); 1990 } 1991 } 1992 } 1993 }, "Rendering Profiler"); 1994 mRenderProfiler.start(); 1995 } else { 1996 mRenderProfiler.interrupt(); 1997 mRenderProfiler = null; 1998 } 1999 } 2000 } 2001 2002 /** 2003 * Called from draw() when DEBUG_FPS is enabled 2004 */ 2005 private void trackFPS() { 2006 // Tracks frames per second drawn. First value in a series of draws may be bogus 2007 // because it down not account for the intervening idle time 2008 long nowTime = System.currentTimeMillis(); 2009 if (mFpsStartTime < 0) { 2010 mFpsStartTime = mFpsPrevTime = nowTime; 2011 mFpsNumFrames = 0; 2012 } else { 2013 ++mFpsNumFrames; 2014 String thisHash = Integer.toHexString(System.identityHashCode(this)); 2015 long frameTime = nowTime - mFpsPrevTime; 2016 long totalTime = nowTime - mFpsStartTime; 2017 Log.v(TAG, "0x" + thisHash + "\tFrame time:\t" + frameTime); 2018 mFpsPrevTime = nowTime; 2019 if (totalTime > 1000) { 2020 float fps = (float) mFpsNumFrames * 1000 / totalTime; 2021 Log.v(TAG, "0x" + thisHash + "\tFPS:\t" + fps); 2022 mFpsStartTime = nowTime; 2023 mFpsNumFrames = 0; 2024 } 2025 } 2026 } 2027 2028 private void performDraw() { 2029 if (!mAttachInfo.mScreenOn && !mReportNextDraw) { 2030 return; 2031 } 2032 2033 final long drawStartTime; 2034 if (ViewDebug.DEBUG_LATENCY) { 2035 drawStartTime = System.nanoTime(); 2036 if (mLastDrawFinishedTimeNanos != 0) { 2037 Log.d(ViewDebug.DEBUG_LATENCY_TAG, "Starting draw(); it has been " 2038 + ((drawStartTime - mLastDrawFinishedTimeNanos) * 0.000001f) 2039 + "ms since the last draw finished."); 2040 } else { 2041 Log.d(ViewDebug.DEBUG_LATENCY_TAG, "Starting draw()."); 2042 } 2043 } 2044 2045 final boolean fullRedrawNeeded = mFullRedrawNeeded; 2046 mFullRedrawNeeded = false; 2047 2048 mIsDrawing = true; 2049 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "draw"); 2050 try { 2051 draw(fullRedrawNeeded); 2052 } finally { 2053 mIsDrawing = false; 2054 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2055 } 2056 2057 if (ViewDebug.DEBUG_LATENCY) { 2058 long now = System.nanoTime(); 2059 Log.d(ViewDebug.DEBUG_LATENCY_TAG, "performDraw() took " 2060 + ((now - drawStartTime) * 0.000001f) 2061 + "ms."); 2062 mLastDrawFinishedTimeNanos = now; 2063 } 2064 2065 if (mReportNextDraw) { 2066 mReportNextDraw = false; 2067 2068 if (LOCAL_LOGV) { 2069 Log.v(TAG, "FINISHED DRAWING: " + mWindowAttributes.getTitle()); 2070 } 2071 if (mSurfaceHolder != null && mSurface.isValid()) { 2072 mSurfaceHolderCallback.surfaceRedrawNeeded(mSurfaceHolder); 2073 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 2074 if (callbacks != null) { 2075 for (SurfaceHolder.Callback c : callbacks) { 2076 if (c instanceof SurfaceHolder.Callback2) { 2077 ((SurfaceHolder.Callback2)c).surfaceRedrawNeeded( 2078 mSurfaceHolder); 2079 } 2080 } 2081 } 2082 } 2083 try { 2084 sWindowSession.finishDrawing(mWindow); 2085 } catch (RemoteException e) { 2086 } 2087 } 2088 } 2089 2090 private void draw(boolean fullRedrawNeeded) { 2091 Surface surface = mSurface; 2092 if (surface == null || !surface.isValid()) { 2093 return; 2094 } 2095 2096 if (DEBUG_FPS) { 2097 trackFPS(); 2098 } 2099 2100 if (!sFirstDrawComplete) { 2101 synchronized (sFirstDrawHandlers) { 2102 sFirstDrawComplete = true; 2103 final int count = sFirstDrawHandlers.size(); 2104 for (int i = 0; i< count; i++) { 2105 mHandler.post(sFirstDrawHandlers.get(i)); 2106 } 2107 } 2108 } 2109 2110 scrollToRectOrFocus(null, false); 2111 2112 final AttachInfo attachInfo = mAttachInfo; 2113 if (attachInfo.mViewScrollChanged) { 2114 attachInfo.mViewScrollChanged = false; 2115 attachInfo.mTreeObserver.dispatchOnScrollChanged(); 2116 } 2117 2118 int yoff; 2119 boolean animating = mScroller != null && mScroller.computeScrollOffset(); 2120 if (animating) { 2121 yoff = mScroller.getCurrY(); 2122 } else { 2123 yoff = mScrollY; 2124 } 2125 if (mCurScrollY != yoff) { 2126 mCurScrollY = yoff; 2127 fullRedrawNeeded = true; 2128 } 2129 2130 final float appScale = attachInfo.mApplicationScale; 2131 final boolean scalingRequired = attachInfo.mScalingRequired; 2132 2133 int resizeAlpha = 0; 2134 if (mResizeBuffer != null) { 2135 long deltaTime = SystemClock.uptimeMillis() - mResizeBufferStartTime; 2136 if (deltaTime < mResizeBufferDuration) { 2137 float amt = deltaTime/(float) mResizeBufferDuration; 2138 amt = mResizeInterpolator.getInterpolation(amt); 2139 animating = true; 2140 resizeAlpha = 255 - (int)(amt*255); 2141 } else { 2142 disposeResizeBuffer(); 2143 } 2144 } 2145 2146 final Rect dirty = mDirty; 2147 if (mSurfaceHolder != null) { 2148 // The app owns the surface, we won't draw. 2149 dirty.setEmpty(); 2150 if (animating) { 2151 if (mScroller != null) { 2152 mScroller.abortAnimation(); 2153 } 2154 disposeResizeBuffer(); 2155 } 2156 return; 2157 } 2158 2159 if (fullRedrawNeeded) { 2160 attachInfo.mIgnoreDirtyState = true; 2161 dirty.set(0, 0, (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 2162 } 2163 2164 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2165 Log.v(TAG, "Draw " + mView + "/" 2166 + mWindowAttributes.getTitle() 2167 + ": dirty={" + dirty.left + "," + dirty.top 2168 + "," + dirty.right + "," + dirty.bottom + "} surface=" 2169 + surface + " surface.isValid()=" + surface.isValid() + ", appScale:" + 2170 appScale + ", width=" + mWidth + ", height=" + mHeight); 2171 } 2172 2173 attachInfo.mTreeObserver.dispatchOnDraw(); 2174 2175 if (!dirty.isEmpty() || mIsAnimating) { 2176 if (attachInfo.mHardwareRenderer != null && attachInfo.mHardwareRenderer.isEnabled()) { 2177 // Draw with hardware renderer. 2178 mIsAnimating = false; 2179 mHardwareYOffset = yoff; 2180 mResizeAlpha = resizeAlpha; 2181 2182 mCurrentDirty.set(dirty); 2183 mCurrentDirty.union(mPreviousDirty); 2184 mPreviousDirty.set(dirty); 2185 dirty.setEmpty(); 2186 2187 if (attachInfo.mHardwareRenderer.draw(mView, attachInfo, this, 2188 animating ? null : mCurrentDirty)) { 2189 mPreviousDirty.set(0, 0, mWidth, mHeight); 2190 } 2191 } else if (!drawSoftware(surface, attachInfo, yoff, scalingRequired, dirty)) { 2192 return; 2193 } 2194 } 2195 2196 if (animating) { 2197 mFullRedrawNeeded = true; 2198 scheduleTraversals(); 2199 } 2200 } 2201 2202 /** 2203 * @return true if drawing was succesfull, false if an error occurred 2204 */ 2205 private boolean drawSoftware(Surface surface, AttachInfo attachInfo, int yoff, 2206 boolean scalingRequired, Rect dirty) { 2207 2208 // If we get here with a disabled & requested hardware renderer, something went 2209 // wrong (an invalidate posted right before we destroyed the hardware surface 2210 // for instance) so we should just bail out. Locking the surface with software 2211 // rendering at this point would lock it forever and prevent hardware renderer 2212 // from doing its job when it comes back. 2213 if (attachInfo.mHardwareRenderer != null && !attachInfo.mHardwareRenderer.isEnabled() && 2214 attachInfo.mHardwareRenderer.isRequested()) { 2215 mFullRedrawNeeded = true; 2216 scheduleTraversals(); 2217 return false; 2218 } 2219 2220 // Draw with software renderer. 2221 Canvas canvas; 2222 try { 2223 int left = dirty.left; 2224 int top = dirty.top; 2225 int right = dirty.right; 2226 int bottom = dirty.bottom; 2227 2228 final long lockCanvasStartTime; 2229 if (ViewDebug.DEBUG_LATENCY) { 2230 lockCanvasStartTime = System.nanoTime(); 2231 } 2232 2233 canvas = mSurface.lockCanvas(dirty); 2234 2235 if (ViewDebug.DEBUG_LATENCY) { 2236 long now = System.nanoTime(); 2237 Log.d(ViewDebug.DEBUG_LATENCY_TAG, "- lockCanvas() took " 2238 + ((now - lockCanvasStartTime) * 0.000001f) + "ms"); 2239 } 2240 2241 if (left != dirty.left || top != dirty.top || right != dirty.right || 2242 bottom != dirty.bottom) { 2243 attachInfo.mIgnoreDirtyState = true; 2244 } 2245 2246 // TODO: Do this in native 2247 canvas.setDensity(mDensity); 2248 } catch (Surface.OutOfResourcesException e) { 2249 Log.e(TAG, "OutOfResourcesException locking surface", e); 2250 try { 2251 if (!sWindowSession.outOfMemory(mWindow)) { 2252 Slog.w(TAG, "No processes killed for memory; killing self"); 2253 Process.killProcess(Process.myPid()); 2254 } 2255 } catch (RemoteException ex) { 2256 } 2257 mLayoutRequested = true; // ask wm for a new surface next time. 2258 return false; 2259 } catch (IllegalArgumentException e) { 2260 Log.e(TAG, "IllegalArgumentException locking surface", e); 2261 // Don't assume this is due to out of memory, it could be 2262 // something else, and if it is something else then we could 2263 // kill stuff (or ourself) for no reason. 2264 mLayoutRequested = true; // ask wm for a new surface next time. 2265 return false; 2266 } 2267 2268 try { 2269 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2270 Log.v(TAG, "Surface " + surface + " drawing to bitmap w=" 2271 + canvas.getWidth() + ", h=" + canvas.getHeight()); 2272 //canvas.drawARGB(255, 255, 0, 0); 2273 } 2274 2275 long startTime = 0L; 2276 if (ViewDebug.DEBUG_PROFILE_DRAWING) { 2277 startTime = SystemClock.elapsedRealtime(); 2278 } 2279 2280 // If this bitmap's format includes an alpha channel, we 2281 // need to clear it before drawing so that the child will 2282 // properly re-composite its drawing on a transparent 2283 // background. This automatically respects the clip/dirty region 2284 // or 2285 // If we are applying an offset, we need to clear the area 2286 // where the offset doesn't appear to avoid having garbage 2287 // left in the blank areas. 2288 if (!canvas.isOpaque() || yoff != 0) { 2289 canvas.drawColor(0, PorterDuff.Mode.CLEAR); 2290 } 2291 2292 dirty.setEmpty(); 2293 mIsAnimating = false; 2294 attachInfo.mDrawingTime = SystemClock.uptimeMillis(); 2295 mView.mPrivateFlags |= View.DRAWN; 2296 2297 if (DEBUG_DRAW) { 2298 Context cxt = mView.getContext(); 2299 Log.i(TAG, "Drawing: package:" + cxt.getPackageName() + 2300 ", metrics=" + cxt.getResources().getDisplayMetrics() + 2301 ", compatibilityInfo=" + cxt.getResources().getCompatibilityInfo()); 2302 } 2303 try { 2304 canvas.translate(0, -yoff); 2305 if (mTranslator != null) { 2306 mTranslator.translateCanvas(canvas); 2307 } 2308 canvas.setScreenDensity(scalingRequired 2309 ? DisplayMetrics.DENSITY_DEVICE : 0); 2310 attachInfo.mSetIgnoreDirtyState = false; 2311 2312 final long drawStartTime; 2313 if (ViewDebug.DEBUG_LATENCY) { 2314 drawStartTime = System.nanoTime(); 2315 } 2316 2317 mView.draw(canvas); 2318 2319 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2320 2321 if (ViewDebug.DEBUG_LATENCY) { 2322 long now = System.nanoTime(); 2323 Log.d(ViewDebug.DEBUG_LATENCY_TAG, "- draw() took " 2324 + ((now - drawStartTime) * 0.000001f) + "ms"); 2325 } 2326 } finally { 2327 if (!attachInfo.mSetIgnoreDirtyState) { 2328 // Only clear the flag if it was not set during the mView.draw() call 2329 attachInfo.mIgnoreDirtyState = false; 2330 } 2331 } 2332 2333 if (false && ViewDebug.consistencyCheckEnabled) { 2334 mView.dispatchConsistencyCheck(ViewDebug.CONSISTENCY_DRAWING); 2335 } 2336 2337 if (ViewDebug.DEBUG_PROFILE_DRAWING) { 2338 EventLog.writeEvent(60000, SystemClock.elapsedRealtime() - startTime); 2339 } 2340 } finally { 2341 final long unlockCanvasAndPostStartTime; 2342 if (ViewDebug.DEBUG_LATENCY) { 2343 unlockCanvasAndPostStartTime = System.nanoTime(); 2344 } 2345 2346 surface.unlockCanvasAndPost(canvas); 2347 2348 if (ViewDebug.DEBUG_LATENCY) { 2349 long now = System.nanoTime(); 2350 Log.d(ViewDebug.DEBUG_LATENCY_TAG, "- unlockCanvasAndPost() took " 2351 + ((now - unlockCanvasAndPostStartTime) * 0.000001f) + "ms"); 2352 } 2353 2354 if (LOCAL_LOGV) { 2355 Log.v(TAG, "Surface " + surface + " unlockCanvasAndPost"); 2356 } 2357 } 2358 return true; 2359 } 2360 2361 @Override 2362 public View findViewToTakeAccessibilityFocusFromHover(View child, View descendant) { 2363 if (descendant.includeForAccessibility()) { 2364 return descendant; 2365 } 2366 return null; 2367 } 2368 2369 /** 2370 * We want to draw a highlight around the current accessibility focused. 2371 * Since adding a style for all possible view is not a viable option we 2372 * have this specialized drawing method. 2373 * 2374 * Note: We are doing this here to be able to draw the highlight for 2375 * virtual views in addition to real ones. 2376 * 2377 * @param canvas The canvas on which to draw. 2378 */ 2379 private void drawAccessibilityFocusedDrawableIfNeeded(Canvas canvas) { 2380 AccessibilityManager manager = AccessibilityManager.getInstance(mView.mContext); 2381 if (!manager.isEnabled() || !manager.isTouchExplorationEnabled()) { 2382 return; 2383 } 2384 if (mAccessibilityFocusedHost == null || mAccessibilityFocusedHost.mAttachInfo == null) { 2385 return; 2386 } 2387 Drawable drawable = getAccessibilityFocusedDrawable(); 2388 if (drawable == null) { 2389 return; 2390 } 2391 AccessibilityNodeProvider provider = 2392 mAccessibilityFocusedHost.getAccessibilityNodeProvider(); 2393 Rect bounds = mView.mAttachInfo.mTmpInvalRect; 2394 if (provider == null) { 2395 mAccessibilityFocusedHost.getDrawingRect(bounds); 2396 if (mView instanceof ViewGroup) { 2397 ViewGroup viewGroup = (ViewGroup) mView; 2398 viewGroup.offsetDescendantRectToMyCoords(mAccessibilityFocusedHost, bounds); 2399 } 2400 } else { 2401 if (mAccessibilityFocusedVirtualView == null) { 2402 mAccessibilityFocusedVirtualView = provider.findAccessibilityFocus(View.NO_ID); 2403 } 2404 if (mAccessibilityFocusedVirtualView == null) { 2405 return; 2406 } 2407 mAccessibilityFocusedVirtualView.getBoundsInScreen(bounds); 2408 bounds.offset(-mAttachInfo.mWindowLeft, -mAttachInfo.mWindowTop); 2409 } 2410 drawable.setBounds(bounds); 2411 drawable.draw(canvas); 2412 } 2413 2414 private Drawable getAccessibilityFocusedDrawable() { 2415 if (mAttachInfo != null) { 2416 // Lazily load the accessibility focus drawable. 2417 if (mAttachInfo.mAccessibilityFocusDrawable == null) { 2418 TypedValue value = new TypedValue(); 2419 final boolean resolved = mView.mContext.getTheme().resolveAttribute( 2420 R.attr.accessibilityFocusedDrawable, value, true); 2421 if (resolved) { 2422 mAttachInfo.mAccessibilityFocusDrawable = 2423 mView.mContext.getResources().getDrawable(value.resourceId); 2424 } 2425 } 2426 return mAttachInfo.mAccessibilityFocusDrawable; 2427 } 2428 return null; 2429 } 2430 2431 void invalidateDisplayLists() { 2432 final ArrayList<DisplayList> displayLists = mDisplayLists; 2433 final int count = displayLists.size(); 2434 2435 for (int i = 0; i < count; i++) { 2436 displayLists.get(i).invalidate(); 2437 } 2438 2439 displayLists.clear(); 2440 } 2441 2442 boolean scrollToRectOrFocus(Rect rectangle, boolean immediate) { 2443 final View.AttachInfo attachInfo = mAttachInfo; 2444 final Rect ci = attachInfo.mContentInsets; 2445 final Rect vi = attachInfo.mVisibleInsets; 2446 int scrollY = 0; 2447 boolean handled = false; 2448 2449 if (vi.left > ci.left || vi.top > ci.top 2450 || vi.right > ci.right || vi.bottom > ci.bottom) { 2451 // We'll assume that we aren't going to change the scroll 2452 // offset, since we want to avoid that unless it is actually 2453 // going to make the focus visible... otherwise we scroll 2454 // all over the place. 2455 scrollY = mScrollY; 2456 // We can be called for two different situations: during a draw, 2457 // to update the scroll position if the focus has changed (in which 2458 // case 'rectangle' is null), or in response to a 2459 // requestChildRectangleOnScreen() call (in which case 'rectangle' 2460 // is non-null and we just want to scroll to whatever that 2461 // rectangle is). 2462 View focus = mRealFocusedView; 2463 2464 // When in touch mode, focus points to the previously focused view, 2465 // which may have been removed from the view hierarchy. The following 2466 // line checks whether the view is still in our hierarchy. 2467 if (focus == null || focus.mAttachInfo != mAttachInfo) { 2468 mRealFocusedView = null; 2469 return false; 2470 } 2471 2472 if (focus != mLastScrolledFocus) { 2473 // If the focus has changed, then ignore any requests to scroll 2474 // to a rectangle; first we want to make sure the entire focus 2475 // view is visible. 2476 rectangle = null; 2477 } 2478 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Eval scroll: focus=" + focus 2479 + " rectangle=" + rectangle + " ci=" + ci 2480 + " vi=" + vi); 2481 if (focus == mLastScrolledFocus && !mScrollMayChange 2482 && rectangle == null) { 2483 // Optimization: if the focus hasn't changed since last 2484 // time, and no layout has happened, then just leave things 2485 // as they are. 2486 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Keeping scroll y=" 2487 + mScrollY + " vi=" + vi.toShortString()); 2488 } else if (focus != null) { 2489 // We need to determine if the currently focused view is 2490 // within the visible part of the window and, if not, apply 2491 // a pan so it can be seen. 2492 mLastScrolledFocus = focus; 2493 mScrollMayChange = false; 2494 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Need to scroll?"); 2495 // Try to find the rectangle from the focus view. 2496 if (focus.getGlobalVisibleRect(mVisRect, null)) { 2497 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Root w=" 2498 + mView.getWidth() + " h=" + mView.getHeight() 2499 + " ci=" + ci.toShortString() 2500 + " vi=" + vi.toShortString()); 2501 if (rectangle == null) { 2502 focus.getFocusedRect(mTempRect); 2503 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Focus " + focus 2504 + ": focusRect=" + mTempRect.toShortString()); 2505 if (mView instanceof ViewGroup) { 2506 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 2507 focus, mTempRect); 2508 } 2509 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2510 "Focus in window: focusRect=" 2511 + mTempRect.toShortString() 2512 + " visRect=" + mVisRect.toShortString()); 2513 } else { 2514 mTempRect.set(rectangle); 2515 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2516 "Request scroll to rect: " 2517 + mTempRect.toShortString() 2518 + " visRect=" + mVisRect.toShortString()); 2519 } 2520 if (mTempRect.intersect(mVisRect)) { 2521 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2522 "Focus window visible rect: " 2523 + mTempRect.toShortString()); 2524 if (mTempRect.height() > 2525 (mView.getHeight()-vi.top-vi.bottom)) { 2526 // If the focus simply is not going to fit, then 2527 // best is probably just to leave things as-is. 2528 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2529 "Too tall; leaving scrollY=" + scrollY); 2530 } else if ((mTempRect.top-scrollY) < vi.top) { 2531 scrollY -= vi.top - (mTempRect.top-scrollY); 2532 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2533 "Top covered; scrollY=" + scrollY); 2534 } else if ((mTempRect.bottom-scrollY) 2535 > (mView.getHeight()-vi.bottom)) { 2536 scrollY += (mTempRect.bottom-scrollY) 2537 - (mView.getHeight()-vi.bottom); 2538 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2539 "Bottom covered; scrollY=" + scrollY); 2540 } 2541 handled = true; 2542 } 2543 } 2544 } 2545 } 2546 2547 if (scrollY != mScrollY) { 2548 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Pan scroll changed: old=" 2549 + mScrollY + " , new=" + scrollY); 2550 if (!immediate && mResizeBuffer == null) { 2551 if (mScroller == null) { 2552 mScroller = new Scroller(mView.getContext()); 2553 } 2554 mScroller.startScroll(0, mScrollY, 0, scrollY-mScrollY); 2555 } else if (mScroller != null) { 2556 mScroller.abortAnimation(); 2557 } 2558 mScrollY = scrollY; 2559 } 2560 2561 return handled; 2562 } 2563 2564 /** 2565 * @hide 2566 */ 2567 public View getAccessibilityFocusedHost() { 2568 return mAccessibilityFocusedHost; 2569 } 2570 2571 /** 2572 * @hide 2573 */ 2574 public AccessibilityNodeInfo getAccessibilityFocusedVirtualView() { 2575 return mAccessibilityFocusedVirtualView; 2576 } 2577 2578 void setAccessibilityFocusedHost(View host) { 2579 // If we have a virtual view with accessibility focus we need 2580 // to clear the focus and invalidate the virtual view bounds. 2581 if (mAccessibilityFocusedVirtualView != null) { 2582 2583 AccessibilityNodeInfo focusNode = mAccessibilityFocusedVirtualView; 2584 View focusHost = mAccessibilityFocusedHost; 2585 focusHost.clearAccessibilityFocusNoCallbacks(); 2586 2587 // Wipe the state of the current accessibility focus since 2588 // the call into the provider to clear accessibility focus 2589 // will fire an accessibility event which will end up calling 2590 // this method and we want to have clean state when this 2591 // invocation happens. 2592 mAccessibilityFocusedHost = null; 2593 mAccessibilityFocusedVirtualView = null; 2594 2595 AccessibilityNodeProvider provider = focusHost.getAccessibilityNodeProvider(); 2596 if (provider != null) { 2597 // Invalidate the area of the cleared accessibility focus. 2598 focusNode.getBoundsInParent(mTempRect); 2599 focusHost.invalidate(mTempRect); 2600 // Clear accessibility focus in the virtual node. 2601 final int virtualNodeId = AccessibilityNodeInfo.getVirtualDescendantId( 2602 focusNode.getSourceNodeId()); 2603 provider.performAction(virtualNodeId, 2604 AccessibilityNodeInfo.ACTION_CLEAR_ACCESSIBILITY_FOCUS, null); 2605 } 2606 } 2607 if (mAccessibilityFocusedHost != null) { 2608 // Clear accessibility focus in the view. 2609 mAccessibilityFocusedHost.clearAccessibilityFocusNoCallbacks(); 2610 } 2611 2612 // Set the new focus host. 2613 mAccessibilityFocusedHost = host; 2614 2615 // If the host has a provide find the virtual descendant that has focus. 2616 if (mAccessibilityFocusedHost != null) { 2617 AccessibilityNodeProvider provider = 2618 mAccessibilityFocusedHost.getAccessibilityNodeProvider(); 2619 if (provider != null) { 2620 mAccessibilityFocusedVirtualView = provider.findAccessibilityFocus(View.NO_ID); 2621 return; 2622 } 2623 } 2624 } 2625 2626 public void requestChildFocus(View child, View focused) { 2627 checkThread(); 2628 2629 if (DEBUG_INPUT_RESIZE) { 2630 Log.v(TAG, "Request child focus: focus now " + focused); 2631 } 2632 2633 mAttachInfo.mTreeObserver.dispatchOnGlobalFocusChange(mOldFocusedView, focused); 2634 scheduleTraversals(); 2635 2636 mFocusedView = mRealFocusedView = focused; 2637 } 2638 2639 public void clearChildFocus(View child) { 2640 checkThread(); 2641 2642 if (DEBUG_INPUT_RESIZE) { 2643 Log.v(TAG, "Clearing child focus"); 2644 } 2645 2646 mOldFocusedView = mFocusedView; 2647 2648 // Invoke the listener only if there is no view to take focus 2649 if (focusSearch(null, View.FOCUS_FORWARD) == null) { 2650 mAttachInfo.mTreeObserver.dispatchOnGlobalFocusChange(mOldFocusedView, null); 2651 } 2652 2653 mFocusedView = mRealFocusedView = null; 2654 } 2655 2656 @Override 2657 public ViewParent getParentForAccessibility() { 2658 return null; 2659 } 2660 2661 public void focusableViewAvailable(View v) { 2662 checkThread(); 2663 if (mView != null) { 2664 if (!mView.hasFocus()) { 2665 v.requestFocus(); 2666 } else { 2667 // the one case where will transfer focus away from the current one 2668 // is if the current view is a view group that prefers to give focus 2669 // to its children first AND the view is a descendant of it. 2670 mFocusedView = mView.findFocus(); 2671 boolean descendantsHaveDibsOnFocus = 2672 (mFocusedView instanceof ViewGroup) && 2673 (((ViewGroup) mFocusedView).getDescendantFocusability() == 2674 ViewGroup.FOCUS_AFTER_DESCENDANTS); 2675 if (descendantsHaveDibsOnFocus && isViewDescendantOf(v, mFocusedView)) { 2676 // If a view gets the focus, the listener will be invoked from requestChildFocus() 2677 v.requestFocus(); 2678 } 2679 } 2680 } 2681 } 2682 2683 public void recomputeViewAttributes(View child) { 2684 checkThread(); 2685 if (mView == child) { 2686 mAttachInfo.mRecomputeGlobalAttributes = true; 2687 if (!mWillDrawSoon) { 2688 scheduleTraversals(); 2689 } 2690 } 2691 } 2692 2693 void dispatchDetachedFromWindow() { 2694 if (mView != null && mView.mAttachInfo != null) { 2695 if (mAttachInfo.mHardwareRenderer != null && 2696 mAttachInfo.mHardwareRenderer.isEnabled()) { 2697 mAttachInfo.mHardwareRenderer.validate(); 2698 } 2699 mView.dispatchDetachedFromWindow(); 2700 } 2701 2702 mAccessibilityInteractionConnectionManager.ensureNoConnection(); 2703 mAccessibilityManager.removeAccessibilityStateChangeListener( 2704 mAccessibilityInteractionConnectionManager); 2705 removeSendWindowContentChangedCallback(); 2706 2707 destroyHardwareRenderer(); 2708 2709 setAccessibilityFocusedHost(null); 2710 2711 mView = null; 2712 mAttachInfo.mRootView = null; 2713 mAttachInfo.mSurface = null; 2714 2715 mSurface.release(); 2716 2717 if (mInputQueueCallback != null && mInputQueue != null) { 2718 mInputQueueCallback.onInputQueueDestroyed(mInputQueue); 2719 mInputQueueCallback = null; 2720 mInputQueue = null; 2721 } else if (mInputEventReceiver != null) { 2722 mInputEventReceiver.dispose(); 2723 mInputEventReceiver = null; 2724 } 2725 try { 2726 sWindowSession.remove(mWindow); 2727 } catch (RemoteException e) { 2728 } 2729 2730 // Dispose the input channel after removing the window so the Window Manager 2731 // doesn't interpret the input channel being closed as an abnormal termination. 2732 if (mInputChannel != null) { 2733 mInputChannel.dispose(); 2734 mInputChannel = null; 2735 } 2736 2737 unscheduleTraversals(); 2738 } 2739 2740 void updateConfiguration(Configuration config, boolean force) { 2741 if (DEBUG_CONFIGURATION) Log.v(TAG, 2742 "Applying new config to window " 2743 + mWindowAttributes.getTitle() 2744 + ": " + config); 2745 2746 CompatibilityInfo ci = mCompatibilityInfo.getIfNeeded(); 2747 if (ci != null) { 2748 config = new Configuration(config); 2749 ci.applyToConfiguration(config); 2750 } 2751 2752 synchronized (sConfigCallbacks) { 2753 for (int i=sConfigCallbacks.size()-1; i>=0; i--) { 2754 sConfigCallbacks.get(i).onConfigurationChanged(config); 2755 } 2756 } 2757 if (mView != null) { 2758 // At this point the resources have been updated to 2759 // have the most recent config, whatever that is. Use 2760 // the on in them which may be newer. 2761 config = mView.getResources().getConfiguration(); 2762 if (force || mLastConfiguration.diff(config) != 0) { 2763 mLastConfiguration.setTo(config); 2764 mView.dispatchConfigurationChanged(config); 2765 } 2766 } 2767 } 2768 2769 /** 2770 * Return true if child is an ancestor of parent, (or equal to the parent). 2771 */ 2772 public static boolean isViewDescendantOf(View child, View parent) { 2773 if (child == parent) { 2774 return true; 2775 } 2776 2777 final ViewParent theParent = child.getParent(); 2778 return (theParent instanceof ViewGroup) && isViewDescendantOf((View) theParent, parent); 2779 } 2780 2781 private static void forceLayout(View view) { 2782 view.forceLayout(); 2783 if (view instanceof ViewGroup) { 2784 ViewGroup group = (ViewGroup) view; 2785 final int count = group.getChildCount(); 2786 for (int i = 0; i < count; i++) { 2787 forceLayout(group.getChildAt(i)); 2788 } 2789 } 2790 } 2791 2792 private final static int MSG_INVALIDATE = 1; 2793 private final static int MSG_INVALIDATE_RECT = 2; 2794 private final static int MSG_DIE = 3; 2795 private final static int MSG_RESIZED = 4; 2796 private final static int MSG_RESIZED_REPORT = 5; 2797 private final static int MSG_WINDOW_FOCUS_CHANGED = 6; 2798 private final static int MSG_DISPATCH_KEY = 7; 2799 private final static int MSG_DISPATCH_APP_VISIBILITY = 8; 2800 private final static int MSG_DISPATCH_GET_NEW_SURFACE = 9; 2801 private final static int MSG_IME_FINISHED_EVENT = 10; 2802 private final static int MSG_DISPATCH_KEY_FROM_IME = 11; 2803 private final static int MSG_FINISH_INPUT_CONNECTION = 12; 2804 private final static int MSG_CHECK_FOCUS = 13; 2805 private final static int MSG_CLOSE_SYSTEM_DIALOGS = 14; 2806 private final static int MSG_DISPATCH_DRAG_EVENT = 15; 2807 private final static int MSG_DISPATCH_DRAG_LOCATION_EVENT = 16; 2808 private final static int MSG_DISPATCH_SYSTEM_UI_VISIBILITY = 17; 2809 private final static int MSG_UPDATE_CONFIGURATION = 18; 2810 private final static int MSG_PROCESS_INPUT_EVENTS = 19; 2811 private final static int MSG_DISPATCH_SCREEN_STATE = 20; 2812 private final static int MSG_INVALIDATE_DISPLAY_LIST = 21; 2813 private final static int MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST = 22; 2814 private final static int MSG_DISPATCH_DONE_ANIMATING = 23; 2815 private final static int MSG_INVALIDATE_WORLD = 24; 2816 2817 final class ViewRootHandler extends Handler { 2818 @Override 2819 public String getMessageName(Message message) { 2820 switch (message.what) { 2821 case MSG_INVALIDATE: 2822 return "MSG_INVALIDATE"; 2823 case MSG_INVALIDATE_RECT: 2824 return "MSG_INVALIDATE_RECT"; 2825 case MSG_DIE: 2826 return "MSG_DIE"; 2827 case MSG_RESIZED: 2828 return "MSG_RESIZED"; 2829 case MSG_RESIZED_REPORT: 2830 return "MSG_RESIZED_REPORT"; 2831 case MSG_WINDOW_FOCUS_CHANGED: 2832 return "MSG_WINDOW_FOCUS_CHANGED"; 2833 case MSG_DISPATCH_KEY: 2834 return "MSG_DISPATCH_KEY"; 2835 case MSG_DISPATCH_APP_VISIBILITY: 2836 return "MSG_DISPATCH_APP_VISIBILITY"; 2837 case MSG_DISPATCH_GET_NEW_SURFACE: 2838 return "MSG_DISPATCH_GET_NEW_SURFACE"; 2839 case MSG_IME_FINISHED_EVENT: 2840 return "MSG_IME_FINISHED_EVENT"; 2841 case MSG_DISPATCH_KEY_FROM_IME: 2842 return "MSG_DISPATCH_KEY_FROM_IME"; 2843 case MSG_FINISH_INPUT_CONNECTION: 2844 return "MSG_FINISH_INPUT_CONNECTION"; 2845 case MSG_CHECK_FOCUS: 2846 return "MSG_CHECK_FOCUS"; 2847 case MSG_CLOSE_SYSTEM_DIALOGS: 2848 return "MSG_CLOSE_SYSTEM_DIALOGS"; 2849 case MSG_DISPATCH_DRAG_EVENT: 2850 return "MSG_DISPATCH_DRAG_EVENT"; 2851 case MSG_DISPATCH_DRAG_LOCATION_EVENT: 2852 return "MSG_DISPATCH_DRAG_LOCATION_EVENT"; 2853 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: 2854 return "MSG_DISPATCH_SYSTEM_UI_VISIBILITY"; 2855 case MSG_UPDATE_CONFIGURATION: 2856 return "MSG_UPDATE_CONFIGURATION"; 2857 case MSG_PROCESS_INPUT_EVENTS: 2858 return "MSG_PROCESS_INPUT_EVENTS"; 2859 case MSG_DISPATCH_SCREEN_STATE: 2860 return "MSG_DISPATCH_SCREEN_STATE"; 2861 case MSG_INVALIDATE_DISPLAY_LIST: 2862 return "MSG_INVALIDATE_DISPLAY_LIST"; 2863 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: 2864 return "MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST"; 2865 case MSG_DISPATCH_DONE_ANIMATING: 2866 return "MSG_DISPATCH_DONE_ANIMATING"; 2867 } 2868 return super.getMessageName(message); 2869 } 2870 2871 @Override 2872 public void handleMessage(Message msg) { 2873 switch (msg.what) { 2874 case MSG_INVALIDATE: 2875 ((View) msg.obj).invalidate(); 2876 break; 2877 case MSG_INVALIDATE_RECT: 2878 final View.AttachInfo.InvalidateInfo info = (View.AttachInfo.InvalidateInfo) msg.obj; 2879 info.target.invalidate(info.left, info.top, info.right, info.bottom); 2880 info.release(); 2881 break; 2882 case MSG_IME_FINISHED_EVENT: 2883 handleImeFinishedEvent(msg.arg1, msg.arg2 != 0); 2884 break; 2885 case MSG_PROCESS_INPUT_EVENTS: 2886 mProcessInputEventsScheduled = false; 2887 doProcessInputEvents(); 2888 break; 2889 case MSG_DISPATCH_APP_VISIBILITY: 2890 handleAppVisibility(msg.arg1 != 0); 2891 break; 2892 case MSG_DISPATCH_GET_NEW_SURFACE: 2893 handleGetNewSurface(); 2894 break; 2895 case MSG_RESIZED: 2896 ResizedInfo ri = (ResizedInfo)msg.obj; 2897 2898 if (mWinFrame.width() == msg.arg1 && mWinFrame.height() == msg.arg2 2899 && mPendingContentInsets.equals(ri.contentInsets) 2900 && mPendingVisibleInsets.equals(ri.visibleInsets) 2901 && ((ResizedInfo)msg.obj).newConfig == null) { 2902 break; 2903 } 2904 // fall through... 2905 case MSG_RESIZED_REPORT: 2906 if (mAdded) { 2907 Configuration config = ((ResizedInfo)msg.obj).newConfig; 2908 if (config != null) { 2909 updateConfiguration(config, false); 2910 } 2911 mWinFrame.left = 0; 2912 mWinFrame.right = msg.arg1; 2913 mWinFrame.top = 0; 2914 mWinFrame.bottom = msg.arg2; 2915 mPendingContentInsets.set(((ResizedInfo)msg.obj).contentInsets); 2916 mPendingVisibleInsets.set(((ResizedInfo)msg.obj).visibleInsets); 2917 if (msg.what == MSG_RESIZED_REPORT) { 2918 mReportNextDraw = true; 2919 } 2920 2921 if (mView != null) { 2922 forceLayout(mView); 2923 } 2924 requestLayout(); 2925 } 2926 break; 2927 case MSG_WINDOW_FOCUS_CHANGED: { 2928 if (mAdded) { 2929 boolean hasWindowFocus = msg.arg1 != 0; 2930 mAttachInfo.mHasWindowFocus = hasWindowFocus; 2931 2932 profileRendering(hasWindowFocus); 2933 2934 if (hasWindowFocus) { 2935 boolean inTouchMode = msg.arg2 != 0; 2936 ensureTouchModeLocally(inTouchMode); 2937 2938 if (mAttachInfo.mHardwareRenderer != null && 2939 mSurface != null && mSurface.isValid()) { 2940 mFullRedrawNeeded = true; 2941 try { 2942 mAttachInfo.mHardwareRenderer.initializeIfNeeded(mWidth, mHeight, 2943 mHolder); 2944 } catch (Surface.OutOfResourcesException e) { 2945 Log.e(TAG, "OutOfResourcesException locking surface", e); 2946 try { 2947 if (!sWindowSession.outOfMemory(mWindow)) { 2948 Slog.w(TAG, "No processes killed for memory; killing self"); 2949 Process.killProcess(Process.myPid()); 2950 } 2951 } catch (RemoteException ex) { 2952 } 2953 // Retry in a bit. 2954 sendMessageDelayed(obtainMessage(msg.what, msg.arg1, msg.arg2), 500); 2955 return; 2956 } 2957 } 2958 } 2959 2960 mLastWasImTarget = WindowManager.LayoutParams 2961 .mayUseInputMethod(mWindowAttributes.flags); 2962 2963 InputMethodManager imm = InputMethodManager.peekInstance(); 2964 if (mView != null) { 2965 if (hasWindowFocus && imm != null && mLastWasImTarget) { 2966 imm.startGettingWindowFocus(mView); 2967 } 2968 mAttachInfo.mKeyDispatchState.reset(); 2969 mView.dispatchWindowFocusChanged(hasWindowFocus); 2970 } 2971 2972 // Note: must be done after the focus change callbacks, 2973 // so all of the view state is set up correctly. 2974 if (hasWindowFocus) { 2975 if (imm != null && mLastWasImTarget) { 2976 imm.onWindowFocus(mView, mView.findFocus(), 2977 mWindowAttributes.softInputMode, 2978 !mHasHadWindowFocus, mWindowAttributes.flags); 2979 } 2980 // Clear the forward bit. We can just do this directly, since 2981 // the window manager doesn't care about it. 2982 mWindowAttributes.softInputMode &= 2983 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 2984 ((WindowManager.LayoutParams)mView.getLayoutParams()) 2985 .softInputMode &= 2986 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 2987 mHasHadWindowFocus = true; 2988 } 2989 2990 setAccessibilityFocusedHost(null); 2991 2992 if (mView != null && mAccessibilityManager.isEnabled()) { 2993 if (hasWindowFocus) { 2994 mView.sendAccessibilityEvent( 2995 AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 2996 } 2997 } 2998 } 2999 } break; 3000 case MSG_DIE: 3001 doDie(); 3002 break; 3003 case MSG_DISPATCH_KEY: { 3004 KeyEvent event = (KeyEvent)msg.obj; 3005 enqueueInputEvent(event, null, 0, true); 3006 } break; 3007 case MSG_DISPATCH_KEY_FROM_IME: { 3008 if (LOCAL_LOGV) Log.v( 3009 TAG, "Dispatching key " 3010 + msg.obj + " from IME to " + mView); 3011 KeyEvent event = (KeyEvent)msg.obj; 3012 if ((event.getFlags()&KeyEvent.FLAG_FROM_SYSTEM) != 0) { 3013 // The IME is trying to say this event is from the 3014 // system! Bad bad bad! 3015 //noinspection UnusedAssignment 3016 event = KeyEvent.changeFlags(event, event.getFlags() & ~KeyEvent.FLAG_FROM_SYSTEM); 3017 } 3018 enqueueInputEvent(event, null, QueuedInputEvent.FLAG_DELIVER_POST_IME, true); 3019 } break; 3020 case MSG_FINISH_INPUT_CONNECTION: { 3021 InputMethodManager imm = InputMethodManager.peekInstance(); 3022 if (imm != null) { 3023 imm.reportFinishInputConnection((InputConnection)msg.obj); 3024 } 3025 } break; 3026 case MSG_CHECK_FOCUS: { 3027 InputMethodManager imm = InputMethodManager.peekInstance(); 3028 if (imm != null) { 3029 imm.checkFocus(); 3030 } 3031 } break; 3032 case MSG_CLOSE_SYSTEM_DIALOGS: { 3033 if (mView != null) { 3034 mView.onCloseSystemDialogs((String)msg.obj); 3035 } 3036 } break; 3037 case MSG_DISPATCH_DRAG_EVENT: 3038 case MSG_DISPATCH_DRAG_LOCATION_EVENT: { 3039 DragEvent event = (DragEvent)msg.obj; 3040 event.mLocalState = mLocalDragState; // only present when this app called startDrag() 3041 handleDragEvent(event); 3042 } break; 3043 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: { 3044 handleDispatchSystemUiVisibilityChanged((SystemUiVisibilityInfo)msg.obj); 3045 } break; 3046 case MSG_UPDATE_CONFIGURATION: { 3047 Configuration config = (Configuration)msg.obj; 3048 if (config.isOtherSeqNewer(mLastConfiguration)) { 3049 config = mLastConfiguration; 3050 } 3051 updateConfiguration(config, false); 3052 } break; 3053 case MSG_DISPATCH_SCREEN_STATE: { 3054 if (mView != null) { 3055 handleScreenStateChange(msg.arg1 == 1); 3056 } 3057 } break; 3058 case MSG_INVALIDATE_DISPLAY_LIST: { 3059 invalidateDisplayLists(); 3060 } break; 3061 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: { 3062 setAccessibilityFocusedHost(null); 3063 } break; 3064 case MSG_DISPATCH_DONE_ANIMATING: { 3065 handleDispatchDoneAnimating(); 3066 } break; 3067 case MSG_INVALIDATE_WORLD: { 3068 invalidateWorld(mView); 3069 } break; 3070 } 3071 } 3072 } 3073 3074 final ViewRootHandler mHandler = new ViewRootHandler(); 3075 3076 /** 3077 * Something in the current window tells us we need to change the touch mode. For 3078 * example, we are not in touch mode, and the user touches the screen. 3079 * 3080 * If the touch mode has changed, tell the window manager, and handle it locally. 3081 * 3082 * @param inTouchMode Whether we want to be in touch mode. 3083 * @return True if the touch mode changed and focus changed was changed as a result 3084 */ 3085 boolean ensureTouchMode(boolean inTouchMode) { 3086 if (DBG) Log.d("touchmode", "ensureTouchMode(" + inTouchMode + "), current " 3087 + "touch mode is " + mAttachInfo.mInTouchMode); 3088 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3089 3090 // tell the window manager 3091 try { 3092 sWindowSession.setInTouchMode(inTouchMode); 3093 } catch (RemoteException e) { 3094 throw new RuntimeException(e); 3095 } 3096 3097 // handle the change 3098 return ensureTouchModeLocally(inTouchMode); 3099 } 3100 3101 /** 3102 * Ensure that the touch mode for this window is set, and if it is changing, 3103 * take the appropriate action. 3104 * @param inTouchMode Whether we want to be in touch mode. 3105 * @return True if the touch mode changed and focus changed was changed as a result 3106 */ 3107 private boolean ensureTouchModeLocally(boolean inTouchMode) { 3108 if (DBG) Log.d("touchmode", "ensureTouchModeLocally(" + inTouchMode + "), current " 3109 + "touch mode is " + mAttachInfo.mInTouchMode); 3110 3111 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3112 3113 mAttachInfo.mInTouchMode = inTouchMode; 3114 mAttachInfo.mTreeObserver.dispatchOnTouchModeChanged(inTouchMode); 3115 3116 return (inTouchMode) ? enterTouchMode() : leaveTouchMode(); 3117 } 3118 3119 private boolean enterTouchMode() { 3120 if (mView != null) { 3121 if (mView.hasFocus()) { 3122 // note: not relying on mFocusedView here because this could 3123 // be when the window is first being added, and mFocused isn't 3124 // set yet. 3125 final View focused = mView.findFocus(); 3126 if (focused != null && !focused.isFocusableInTouchMode()) { 3127 3128 final ViewGroup ancestorToTakeFocus = 3129 findAncestorToTakeFocusInTouchMode(focused); 3130 if (ancestorToTakeFocus != null) { 3131 // there is an ancestor that wants focus after its descendants that 3132 // is focusable in touch mode.. give it focus 3133 return ancestorToTakeFocus.requestFocus(); 3134 } else { 3135 // nothing appropriate to have focus in touch mode, clear it out 3136 mView.unFocus(); 3137 mAttachInfo.mTreeObserver.dispatchOnGlobalFocusChange(focused, null); 3138 mFocusedView = null; 3139 mOldFocusedView = null; 3140 return true; 3141 } 3142 } 3143 } 3144 } 3145 return false; 3146 } 3147 3148 /** 3149 * Find an ancestor of focused that wants focus after its descendants and is 3150 * focusable in touch mode. 3151 * @param focused The currently focused view. 3152 * @return An appropriate view, or null if no such view exists. 3153 */ 3154 private static ViewGroup findAncestorToTakeFocusInTouchMode(View focused) { 3155 ViewParent parent = focused.getParent(); 3156 while (parent instanceof ViewGroup) { 3157 final ViewGroup vgParent = (ViewGroup) parent; 3158 if (vgParent.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 3159 && vgParent.isFocusableInTouchMode()) { 3160 return vgParent; 3161 } 3162 if (vgParent.isRootNamespace()) { 3163 return null; 3164 } else { 3165 parent = vgParent.getParent(); 3166 } 3167 } 3168 return null; 3169 } 3170 3171 private boolean leaveTouchMode() { 3172 if (mView != null) { 3173 if (mView.hasFocus()) { 3174 // i learned the hard way to not trust mFocusedView :) 3175 mFocusedView = mView.findFocus(); 3176 if (!(mFocusedView instanceof ViewGroup)) { 3177 // some view has focus, let it keep it 3178 return false; 3179 } else if (((ViewGroup)mFocusedView).getDescendantFocusability() != 3180 ViewGroup.FOCUS_AFTER_DESCENDANTS) { 3181 // some view group has focus, and doesn't prefer its children 3182 // over itself for focus, so let them keep it. 3183 return false; 3184 } 3185 } 3186 3187 // find the best view to give focus to in this brave new non-touch-mode 3188 // world 3189 final View focused = focusSearch(null, View.FOCUS_DOWN); 3190 if (focused != null) { 3191 return focused.requestFocus(View.FOCUS_DOWN); 3192 } 3193 } 3194 return false; 3195 } 3196 3197 private void deliverInputEvent(QueuedInputEvent q) { 3198 if (ViewDebug.DEBUG_LATENCY) { 3199 q.mDeliverTimeNanos = System.nanoTime(); 3200 } 3201 3202 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "deliverInputEvent"); 3203 try { 3204 if (q.mEvent instanceof KeyEvent) { 3205 deliverKeyEvent(q); 3206 } else { 3207 final int source = q.mEvent.getSource(); 3208 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 3209 deliverPointerEvent(q); 3210 } else if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 3211 deliverTrackballEvent(q); 3212 } else { 3213 deliverGenericMotionEvent(q); 3214 } 3215 } 3216 } finally { 3217 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 3218 } 3219 } 3220 3221 private void deliverPointerEvent(QueuedInputEvent q) { 3222 final MotionEvent event = (MotionEvent)q.mEvent; 3223 final boolean isTouchEvent = event.isTouchEvent(); 3224 if (mInputEventConsistencyVerifier != null) { 3225 if (isTouchEvent) { 3226 mInputEventConsistencyVerifier.onTouchEvent(event, 0); 3227 } else { 3228 mInputEventConsistencyVerifier.onGenericMotionEvent(event, 0); 3229 } 3230 } 3231 3232 // If there is no view, then the event will not be handled. 3233 if (mView == null || !mAdded) { 3234 finishInputEvent(q, false); 3235 return; 3236 } 3237 3238 // Translate the pointer event for compatibility, if needed. 3239 if (mTranslator != null) { 3240 mTranslator.translateEventInScreenToAppWindow(event); 3241 } 3242 3243 // Enter touch mode on down or scroll. 3244 final int action = event.getAction(); 3245 if (action == MotionEvent.ACTION_DOWN || action == MotionEvent.ACTION_SCROLL) { 3246 ensureTouchMode(true); 3247 } 3248 3249 // Offset the scroll position. 3250 if (mCurScrollY != 0) { 3251 event.offsetLocation(0, mCurScrollY); 3252 } 3253 if (MEASURE_LATENCY) { 3254 lt.sample("A Dispatching PointerEvents", System.nanoTime() - event.getEventTimeNano()); 3255 } 3256 3257 // Remember the touch position for possible drag-initiation. 3258 if (isTouchEvent) { 3259 mLastTouchPoint.x = event.getRawX(); 3260 mLastTouchPoint.y = event.getRawY(); 3261 } 3262 3263 // Dispatch touch to view hierarchy. 3264 boolean handled = mView.dispatchPointerEvent(event); 3265 if (MEASURE_LATENCY) { 3266 lt.sample("B Dispatched PointerEvents ", System.nanoTime() - event.getEventTimeNano()); 3267 } 3268 if (handled) { 3269 finishInputEvent(q, true); 3270 return; 3271 } 3272 3273 // Pointer event was unhandled. 3274 finishInputEvent(q, false); 3275 } 3276 3277 private void deliverTrackballEvent(QueuedInputEvent q) { 3278 final MotionEvent event = (MotionEvent)q.mEvent; 3279 if (mInputEventConsistencyVerifier != null) { 3280 mInputEventConsistencyVerifier.onTrackballEvent(event, 0); 3281 } 3282 3283 // If there is no view, then the event will not be handled. 3284 if (mView == null || !mAdded) { 3285 finishInputEvent(q, false); 3286 return; 3287 } 3288 3289 // Deliver the trackball event to the view. 3290 if (mView.dispatchTrackballEvent(event)) { 3291 // If we reach this, we delivered a trackball event to mView and 3292 // mView consumed it. Because we will not translate the trackball 3293 // event into a key event, touch mode will not exit, so we exit 3294 // touch mode here. 3295 ensureTouchMode(false); 3296 3297 finishInputEvent(q, true); 3298 mLastTrackballTime = Integer.MIN_VALUE; 3299 return; 3300 } 3301 3302 // Translate the trackball event into DPAD keys and try to deliver those. 3303 final TrackballAxis x = mTrackballAxisX; 3304 final TrackballAxis y = mTrackballAxisY; 3305 3306 long curTime = SystemClock.uptimeMillis(); 3307 if ((mLastTrackballTime + MAX_TRACKBALL_DELAY) < curTime) { 3308 // It has been too long since the last movement, 3309 // so restart at the beginning. 3310 x.reset(0); 3311 y.reset(0); 3312 mLastTrackballTime = curTime; 3313 } 3314 3315 final int action = event.getAction(); 3316 final int metaState = event.getMetaState(); 3317 switch (action) { 3318 case MotionEvent.ACTION_DOWN: 3319 x.reset(2); 3320 y.reset(2); 3321 enqueueInputEvent(new KeyEvent(curTime, curTime, 3322 KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 3323 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 3324 InputDevice.SOURCE_KEYBOARD)); 3325 break; 3326 case MotionEvent.ACTION_UP: 3327 x.reset(2); 3328 y.reset(2); 3329 enqueueInputEvent(new KeyEvent(curTime, curTime, 3330 KeyEvent.ACTION_UP, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 3331 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 3332 InputDevice.SOURCE_KEYBOARD)); 3333 break; 3334 } 3335 3336 if (DEBUG_TRACKBALL) Log.v(TAG, "TB X=" + x.position + " step=" 3337 + x.step + " dir=" + x.dir + " acc=" + x.acceleration 3338 + " move=" + event.getX() 3339 + " / Y=" + y.position + " step=" 3340 + y.step + " dir=" + y.dir + " acc=" + y.acceleration 3341 + " move=" + event.getY()); 3342 final float xOff = x.collect(event.getX(), event.getEventTime(), "X"); 3343 final float yOff = y.collect(event.getY(), event.getEventTime(), "Y"); 3344 3345 // Generate DPAD events based on the trackball movement. 3346 // We pick the axis that has moved the most as the direction of 3347 // the DPAD. When we generate DPAD events for one axis, then the 3348 // other axis is reset -- we don't want to perform DPAD jumps due 3349 // to slight movements in the trackball when making major movements 3350 // along the other axis. 3351 int keycode = 0; 3352 int movement = 0; 3353 float accel = 1; 3354 if (xOff > yOff) { 3355 movement = x.generate((2/event.getXPrecision())); 3356 if (movement != 0) { 3357 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_RIGHT 3358 : KeyEvent.KEYCODE_DPAD_LEFT; 3359 accel = x.acceleration; 3360 y.reset(2); 3361 } 3362 } else if (yOff > 0) { 3363 movement = y.generate((2/event.getYPrecision())); 3364 if (movement != 0) { 3365 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_DOWN 3366 : KeyEvent.KEYCODE_DPAD_UP; 3367 accel = y.acceleration; 3368 x.reset(2); 3369 } 3370 } 3371 3372 if (keycode != 0) { 3373 if (movement < 0) movement = -movement; 3374 int accelMovement = (int)(movement * accel); 3375 if (DEBUG_TRACKBALL) Log.v(TAG, "Move: movement=" + movement 3376 + " accelMovement=" + accelMovement 3377 + " accel=" + accel); 3378 if (accelMovement > movement) { 3379 if (DEBUG_TRACKBALL) Log.v("foo", "Delivering fake DPAD: " 3380 + keycode); 3381 movement--; 3382 int repeatCount = accelMovement - movement; 3383 enqueueInputEvent(new KeyEvent(curTime, curTime, 3384 KeyEvent.ACTION_MULTIPLE, keycode, repeatCount, metaState, 3385 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 3386 InputDevice.SOURCE_KEYBOARD)); 3387 } 3388 while (movement > 0) { 3389 if (DEBUG_TRACKBALL) Log.v("foo", "Delivering fake DPAD: " 3390 + keycode); 3391 movement--; 3392 curTime = SystemClock.uptimeMillis(); 3393 enqueueInputEvent(new KeyEvent(curTime, curTime, 3394 KeyEvent.ACTION_DOWN, keycode, 0, metaState, 3395 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 3396 InputDevice.SOURCE_KEYBOARD)); 3397 enqueueInputEvent(new KeyEvent(curTime, curTime, 3398 KeyEvent.ACTION_UP, keycode, 0, metaState, 3399 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 3400 InputDevice.SOURCE_KEYBOARD)); 3401 } 3402 mLastTrackballTime = curTime; 3403 } 3404 3405 // Unfortunately we can't tell whether the application consumed the keys, so 3406 // we always consider the trackball event handled. 3407 finishInputEvent(q, true); 3408 } 3409 3410 private void deliverGenericMotionEvent(QueuedInputEvent q) { 3411 final MotionEvent event = (MotionEvent)q.mEvent; 3412 if (mInputEventConsistencyVerifier != null) { 3413 mInputEventConsistencyVerifier.onGenericMotionEvent(event, 0); 3414 } 3415 3416 final int source = event.getSource(); 3417 final boolean isJoystick = (source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0; 3418 3419 // If there is no view, then the event will not be handled. 3420 if (mView == null || !mAdded) { 3421 if (isJoystick) { 3422 updateJoystickDirection(event, false); 3423 } 3424 finishInputEvent(q, false); 3425 return; 3426 } 3427 3428 // Deliver the event to the view. 3429 if (mView.dispatchGenericMotionEvent(event)) { 3430 if (isJoystick) { 3431 updateJoystickDirection(event, false); 3432 } 3433 finishInputEvent(q, true); 3434 return; 3435 } 3436 3437 if (isJoystick) { 3438 // Translate the joystick event into DPAD keys and try to deliver those. 3439 updateJoystickDirection(event, true); 3440 finishInputEvent(q, true); 3441 } else { 3442 finishInputEvent(q, false); 3443 } 3444 } 3445 3446 private void updateJoystickDirection(MotionEvent event, boolean synthesizeNewKeys) { 3447 final long time = event.getEventTime(); 3448 final int metaState = event.getMetaState(); 3449 final int deviceId = event.getDeviceId(); 3450 final int source = event.getSource(); 3451 3452 int xDirection = joystickAxisValueToDirection(event.getAxisValue(MotionEvent.AXIS_HAT_X)); 3453 if (xDirection == 0) { 3454 xDirection = joystickAxisValueToDirection(event.getX()); 3455 } 3456 3457 int yDirection = joystickAxisValueToDirection(event.getAxisValue(MotionEvent.AXIS_HAT_Y)); 3458 if (yDirection == 0) { 3459 yDirection = joystickAxisValueToDirection(event.getY()); 3460 } 3461 3462 if (xDirection != mLastJoystickXDirection) { 3463 if (mLastJoystickXKeyCode != 0) { 3464 enqueueInputEvent(new KeyEvent(time, time, 3465 KeyEvent.ACTION_UP, mLastJoystickXKeyCode, 0, metaState, 3466 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 3467 mLastJoystickXKeyCode = 0; 3468 } 3469 3470 mLastJoystickXDirection = xDirection; 3471 3472 if (xDirection != 0 && synthesizeNewKeys) { 3473 mLastJoystickXKeyCode = xDirection > 0 3474 ? KeyEvent.KEYCODE_DPAD_RIGHT : KeyEvent.KEYCODE_DPAD_LEFT; 3475 enqueueInputEvent(new KeyEvent(time, time, 3476 KeyEvent.ACTION_DOWN, mLastJoystickXKeyCode, 0, metaState, 3477 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 3478 } 3479 } 3480 3481 if (yDirection != mLastJoystickYDirection) { 3482 if (mLastJoystickYKeyCode != 0) { 3483 enqueueInputEvent(new KeyEvent(time, time, 3484 KeyEvent.ACTION_UP, mLastJoystickYKeyCode, 0, metaState, 3485 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 3486 mLastJoystickYKeyCode = 0; 3487 } 3488 3489 mLastJoystickYDirection = yDirection; 3490 3491 if (yDirection != 0 && synthesizeNewKeys) { 3492 mLastJoystickYKeyCode = yDirection > 0 3493 ? KeyEvent.KEYCODE_DPAD_DOWN : KeyEvent.KEYCODE_DPAD_UP; 3494 enqueueInputEvent(new KeyEvent(time, time, 3495 KeyEvent.ACTION_DOWN, mLastJoystickYKeyCode, 0, metaState, 3496 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 3497 } 3498 } 3499 } 3500 3501 private static int joystickAxisValueToDirection(float value) { 3502 if (value >= 0.5f) { 3503 return 1; 3504 } else if (value <= -0.5f) { 3505 return -1; 3506 } else { 3507 return 0; 3508 } 3509 } 3510 3511 /** 3512 * Returns true if the key is used for keyboard navigation. 3513 * @param keyEvent The key event. 3514 * @return True if the key is used for keyboard navigation. 3515 */ 3516 private static boolean isNavigationKey(KeyEvent keyEvent) { 3517 switch (keyEvent.getKeyCode()) { 3518 case KeyEvent.KEYCODE_DPAD_LEFT: 3519 case KeyEvent.KEYCODE_DPAD_RIGHT: 3520 case KeyEvent.KEYCODE_DPAD_UP: 3521 case KeyEvent.KEYCODE_DPAD_DOWN: 3522 case KeyEvent.KEYCODE_DPAD_CENTER: 3523 case KeyEvent.KEYCODE_PAGE_UP: 3524 case KeyEvent.KEYCODE_PAGE_DOWN: 3525 case KeyEvent.KEYCODE_MOVE_HOME: 3526 case KeyEvent.KEYCODE_MOVE_END: 3527 case KeyEvent.KEYCODE_TAB: 3528 case KeyEvent.KEYCODE_SPACE: 3529 case KeyEvent.KEYCODE_ENTER: 3530 return true; 3531 } 3532 return false; 3533 } 3534 3535 /** 3536 * Returns true if the key is used for typing. 3537 * @param keyEvent The key event. 3538 * @return True if the key is used for typing. 3539 */ 3540 private static boolean isTypingKey(KeyEvent keyEvent) { 3541 return keyEvent.getUnicodeChar() > 0; 3542 } 3543 3544 /** 3545 * See if the key event means we should leave touch mode (and leave touch mode if so). 3546 * @param event The key event. 3547 * @return Whether this key event should be consumed (meaning the act of 3548 * leaving touch mode alone is considered the event). 3549 */ 3550 private boolean checkForLeavingTouchModeAndConsume(KeyEvent event) { 3551 // Only relevant in touch mode. 3552 if (!mAttachInfo.mInTouchMode) { 3553 return false; 3554 } 3555 3556 // Only consider leaving touch mode on DOWN or MULTIPLE actions, never on UP. 3557 final int action = event.getAction(); 3558 if (action != KeyEvent.ACTION_DOWN && action != KeyEvent.ACTION_MULTIPLE) { 3559 return false; 3560 } 3561 3562 // Don't leave touch mode if the IME told us not to. 3563 if ((event.getFlags() & KeyEvent.FLAG_KEEP_TOUCH_MODE) != 0) { 3564 return false; 3565 } 3566 3567 // If the key can be used for keyboard navigation then leave touch mode 3568 // and select a focused view if needed (in ensureTouchMode). 3569 // When a new focused view is selected, we consume the navigation key because 3570 // navigation doesn't make much sense unless a view already has focus so 3571 // the key's purpose is to set focus. 3572 if (isNavigationKey(event)) { 3573 return ensureTouchMode(false); 3574 } 3575 3576 // If the key can be used for typing then leave touch mode 3577 // and select a focused view if needed (in ensureTouchMode). 3578 // Always allow the view to process the typing key. 3579 if (isTypingKey(event)) { 3580 ensureTouchMode(false); 3581 return false; 3582 } 3583 3584 return false; 3585 } 3586 3587 private void deliverKeyEvent(QueuedInputEvent q) { 3588 final KeyEvent event = (KeyEvent)q.mEvent; 3589 if (mInputEventConsistencyVerifier != null) { 3590 mInputEventConsistencyVerifier.onKeyEvent(event, 0); 3591 } 3592 3593 if ((q.mFlags & QueuedInputEvent.FLAG_DELIVER_POST_IME) == 0) { 3594 // If there is no view, then the event will not be handled. 3595 if (mView == null || !mAdded) { 3596 finishInputEvent(q, false); 3597 return; 3598 } 3599 3600 if (LOCAL_LOGV) Log.v(TAG, "Dispatching key " + event + " to " + mView); 3601 3602 // Perform predispatching before the IME. 3603 if (mView.dispatchKeyEventPreIme(event)) { 3604 finishInputEvent(q, true); 3605 return; 3606 } 3607 3608 // Dispatch to the IME before propagating down the view hierarchy. 3609 // The IME will eventually call back into handleImeFinishedEvent. 3610 if (mLastWasImTarget) { 3611 InputMethodManager imm = InputMethodManager.peekInstance(); 3612 if (imm != null) { 3613 final int seq = event.getSequenceNumber(); 3614 if (DEBUG_IMF) Log.v(TAG, "Sending key event to IME: seq=" 3615 + seq + " event=" + event); 3616 imm.dispatchKeyEvent(mView.getContext(), seq, event, mInputMethodCallback); 3617 return; 3618 } 3619 } 3620 } 3621 3622 // Not dispatching to IME, continue with post IME actions. 3623 deliverKeyEventPostIme(q); 3624 } 3625 3626 void handleImeFinishedEvent(int seq, boolean handled) { 3627 final QueuedInputEvent q = mCurrentInputEvent; 3628 if (q != null && q.mEvent.getSequenceNumber() == seq) { 3629 final KeyEvent event = (KeyEvent)q.mEvent; 3630 if (DEBUG_IMF) { 3631 Log.v(TAG, "IME finished event: seq=" + seq 3632 + " handled=" + handled + " event=" + event); 3633 } 3634 if (handled) { 3635 finishInputEvent(q, true); 3636 } else { 3637 deliverKeyEventPostIme(q); 3638 } 3639 } else { 3640 if (DEBUG_IMF) { 3641 Log.v(TAG, "IME finished event: seq=" + seq 3642 + " handled=" + handled + ", event not found!"); 3643 } 3644 } 3645 } 3646 3647 private void deliverKeyEventPostIme(QueuedInputEvent q) { 3648 final KeyEvent event = (KeyEvent)q.mEvent; 3649 if (ViewDebug.DEBUG_LATENCY) { 3650 q.mDeliverPostImeTimeNanos = System.nanoTime(); 3651 } 3652 3653 // If the view went away, then the event will not be handled. 3654 if (mView == null || !mAdded) { 3655 finishInputEvent(q, false); 3656 return; 3657 } 3658 3659 // If the key's purpose is to exit touch mode then we consume it and consider it handled. 3660 if (checkForLeavingTouchModeAndConsume(event)) { 3661 finishInputEvent(q, true); 3662 return; 3663 } 3664 3665 // Make sure the fallback event policy sees all keys that will be delivered to the 3666 // view hierarchy. 3667 mFallbackEventHandler.preDispatchKeyEvent(event); 3668 3669 // Deliver the key to the view hierarchy. 3670 if (mView.dispatchKeyEvent(event)) { 3671 finishInputEvent(q, true); 3672 return; 3673 } 3674 3675 // If the Control modifier is held, try to interpret the key as a shortcut. 3676 if (event.getAction() == KeyEvent.ACTION_DOWN 3677 && event.isCtrlPressed() 3678 && event.getRepeatCount() == 0 3679 && !KeyEvent.isModifierKey(event.getKeyCode())) { 3680 if (mView.dispatchKeyShortcutEvent(event)) { 3681 finishInputEvent(q, true); 3682 return; 3683 } 3684 } 3685 3686 // Apply the fallback event policy. 3687 if (mFallbackEventHandler.dispatchKeyEvent(event)) { 3688 finishInputEvent(q, true); 3689 return; 3690 } 3691 3692 // Handle automatic focus changes. 3693 if (event.getAction() == KeyEvent.ACTION_DOWN) { 3694 int direction = 0; 3695 switch (event.getKeyCode()) { 3696 case KeyEvent.KEYCODE_DPAD_LEFT: 3697 if (event.hasNoModifiers()) { 3698 direction = View.FOCUS_LEFT; 3699 } 3700 break; 3701 case KeyEvent.KEYCODE_DPAD_RIGHT: 3702 if (event.hasNoModifiers()) { 3703 direction = View.FOCUS_RIGHT; 3704 } 3705 break; 3706 case KeyEvent.KEYCODE_DPAD_UP: 3707 if (event.hasNoModifiers()) { 3708 direction = View.FOCUS_UP; 3709 } 3710 break; 3711 case KeyEvent.KEYCODE_DPAD_DOWN: 3712 if (event.hasNoModifiers()) { 3713 direction = View.FOCUS_DOWN; 3714 } 3715 break; 3716 case KeyEvent.KEYCODE_TAB: 3717 if (event.hasNoModifiers()) { 3718 direction = View.FOCUS_FORWARD; 3719 } else if (event.hasModifiers(KeyEvent.META_SHIFT_ON)) { 3720 direction = View.FOCUS_BACKWARD; 3721 } 3722 break; 3723 } 3724 if (direction != 0) { 3725 View focused = mView.findFocus(); 3726 if (focused != null) { 3727 View v = focused.focusSearch(direction); 3728 if (v != null && v != focused) { 3729 // do the math the get the interesting rect 3730 // of previous focused into the coord system of 3731 // newly focused view 3732 focused.getFocusedRect(mTempRect); 3733 if (mView instanceof ViewGroup) { 3734 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 3735 focused, mTempRect); 3736 ((ViewGroup) mView).offsetRectIntoDescendantCoords( 3737 v, mTempRect); 3738 } 3739 if (v.requestFocus(direction, mTempRect)) { 3740 playSoundEffect(SoundEffectConstants 3741 .getContantForFocusDirection(direction)); 3742 finishInputEvent(q, true); 3743 return; 3744 } 3745 } 3746 3747 // Give the focused view a last chance to handle the dpad key. 3748 if (mView.dispatchUnhandledMove(focused, direction)) { 3749 finishInputEvent(q, true); 3750 return; 3751 } 3752 } 3753 } 3754 } 3755 3756 // Key was unhandled. 3757 finishInputEvent(q, false); 3758 } 3759 3760 /* drag/drop */ 3761 void setLocalDragState(Object obj) { 3762 mLocalDragState = obj; 3763 } 3764 3765 private void handleDragEvent(DragEvent event) { 3766 // From the root, only drag start/end/location are dispatched. entered/exited 3767 // are determined and dispatched by the viewgroup hierarchy, who then report 3768 // that back here for ultimate reporting back to the framework. 3769 if (mView != null && mAdded) { 3770 final int what = event.mAction; 3771 3772 if (what == DragEvent.ACTION_DRAG_EXITED) { 3773 // A direct EXITED event means that the window manager knows we've just crossed 3774 // a window boundary, so the current drag target within this one must have 3775 // just been exited. Send it the usual notifications and then we're done 3776 // for now. 3777 mView.dispatchDragEvent(event); 3778 } else { 3779 // Cache the drag description when the operation starts, then fill it in 3780 // on subsequent calls as a convenience 3781 if (what == DragEvent.ACTION_DRAG_STARTED) { 3782 mCurrentDragView = null; // Start the current-recipient tracking 3783 mDragDescription = event.mClipDescription; 3784 } else { 3785 event.mClipDescription = mDragDescription; 3786 } 3787 3788 // For events with a [screen] location, translate into window coordinates 3789 if ((what == DragEvent.ACTION_DRAG_LOCATION) || (what == DragEvent.ACTION_DROP)) { 3790 mDragPoint.set(event.mX, event.mY); 3791 if (mTranslator != null) { 3792 mTranslator.translatePointInScreenToAppWindow(mDragPoint); 3793 } 3794 3795 if (mCurScrollY != 0) { 3796 mDragPoint.offset(0, mCurScrollY); 3797 } 3798 3799 event.mX = mDragPoint.x; 3800 event.mY = mDragPoint.y; 3801 } 3802 3803 // Remember who the current drag target is pre-dispatch 3804 final View prevDragView = mCurrentDragView; 3805 3806 // Now dispatch the drag/drop event 3807 boolean result = mView.dispatchDragEvent(event); 3808 3809 // If we changed apparent drag target, tell the OS about it 3810 if (prevDragView != mCurrentDragView) { 3811 try { 3812 if (prevDragView != null) { 3813 sWindowSession.dragRecipientExited(mWindow); 3814 } 3815 if (mCurrentDragView != null) { 3816 sWindowSession.dragRecipientEntered(mWindow); 3817 } 3818 } catch (RemoteException e) { 3819 Slog.e(TAG, "Unable to note drag target change"); 3820 } 3821 } 3822 3823 // Report the drop result when we're done 3824 if (what == DragEvent.ACTION_DROP) { 3825 mDragDescription = null; 3826 try { 3827 Log.i(TAG, "Reporting drop result: " + result); 3828 sWindowSession.reportDropResult(mWindow, result); 3829 } catch (RemoteException e) { 3830 Log.e(TAG, "Unable to report drop result"); 3831 } 3832 } 3833 3834 // When the drag operation ends, release any local state object 3835 // that may have been in use 3836 if (what == DragEvent.ACTION_DRAG_ENDED) { 3837 setLocalDragState(null); 3838 } 3839 } 3840 } 3841 event.recycle(); 3842 } 3843 3844 public void handleDispatchSystemUiVisibilityChanged(SystemUiVisibilityInfo args) { 3845 if (mSeq != args.seq) { 3846 // The sequence has changed, so we need to update our value and make 3847 // sure to do a traversal afterward so the window manager is given our 3848 // most recent data. 3849 mSeq = args.seq; 3850 mAttachInfo.mForceReportNewAttributes = true; 3851 scheduleTraversals(); 3852 } 3853 if (mView == null) return; 3854 if (args.localChanges != 0) { 3855 mView.updateLocalSystemUiVisibility(args.localValue, args.localChanges); 3856 } 3857 if (mAttachInfo != null) { 3858 int visibility = args.globalVisibility&View.SYSTEM_UI_CLEARABLE_FLAGS; 3859 if (visibility != mAttachInfo.mGlobalSystemUiVisibility) { 3860 mAttachInfo.mGlobalSystemUiVisibility = visibility; 3861 mView.dispatchSystemUiVisibilityChanged(visibility); 3862 } 3863 } 3864 } 3865 3866 public void handleDispatchDoneAnimating() { 3867 if (mWindowsAnimating) { 3868 mWindowsAnimating = false; 3869 if (!mDirty.isEmpty() || mIsAnimating) { 3870 scheduleTraversals(); 3871 } 3872 } 3873 } 3874 3875 public void getLastTouchPoint(Point outLocation) { 3876 outLocation.x = (int) mLastTouchPoint.x; 3877 outLocation.y = (int) mLastTouchPoint.y; 3878 } 3879 3880 public void setDragFocus(View newDragTarget) { 3881 if (mCurrentDragView != newDragTarget) { 3882 mCurrentDragView = newDragTarget; 3883 } 3884 } 3885 3886 private AudioManager getAudioManager() { 3887 if (mView == null) { 3888 throw new IllegalStateException("getAudioManager called when there is no mView"); 3889 } 3890 if (mAudioManager == null) { 3891 mAudioManager = (AudioManager) mView.getContext().getSystemService(Context.AUDIO_SERVICE); 3892 } 3893 return mAudioManager; 3894 } 3895 3896 public AccessibilityInteractionController getAccessibilityInteractionController() { 3897 if (mView == null) { 3898 throw new IllegalStateException("getAccessibilityInteractionController" 3899 + " called when there is no mView"); 3900 } 3901 if (mAccessibilityInteractionController == null) { 3902 mAccessibilityInteractionController = new AccessibilityInteractionController(this); 3903 } 3904 return mAccessibilityInteractionController; 3905 } 3906 3907 private int relayoutWindow(WindowManager.LayoutParams params, int viewVisibility, 3908 boolean insetsPending) throws RemoteException { 3909 3910 float appScale = mAttachInfo.mApplicationScale; 3911 boolean restore = false; 3912 if (params != null && mTranslator != null) { 3913 restore = true; 3914 params.backup(); 3915 mTranslator.translateWindowLayout(params); 3916 } 3917 if (params != null) { 3918 if (DBG) Log.d(TAG, "WindowLayout in layoutWindow:" + params); 3919 } 3920 mPendingConfiguration.seq = 0; 3921 //Log.d(TAG, ">>>>>> CALLING relayout"); 3922 if (params != null && mOrigWindowType != params.type) { 3923 // For compatibility with old apps, don't crash here. 3924 if (mTargetSdkVersion < android.os.Build.VERSION_CODES.ICE_CREAM_SANDWICH) { 3925 Slog.w(TAG, "Window type can not be changed after " 3926 + "the window is added; ignoring change of " + mView); 3927 params.type = mOrigWindowType; 3928 } 3929 } 3930 int relayoutResult = sWindowSession.relayout( 3931 mWindow, mSeq, params, 3932 (int) (mView.getMeasuredWidth() * appScale + 0.5f), 3933 (int) (mView.getMeasuredHeight() * appScale + 0.5f), 3934 viewVisibility, insetsPending ? WindowManagerImpl.RELAYOUT_INSETS_PENDING : 0, 3935 mWinFrame, mPendingContentInsets, mPendingVisibleInsets, 3936 mPendingConfiguration, mSurface); 3937 //Log.d(TAG, "<<<<<< BACK FROM relayout"); 3938 if (restore) { 3939 params.restore(); 3940 } 3941 3942 if (mTranslator != null) { 3943 mTranslator.translateRectInScreenToAppWinFrame(mWinFrame); 3944 mTranslator.translateRectInScreenToAppWindow(mPendingContentInsets); 3945 mTranslator.translateRectInScreenToAppWindow(mPendingVisibleInsets); 3946 } 3947 return relayoutResult; 3948 } 3949 3950 /** 3951 * {@inheritDoc} 3952 */ 3953 public void playSoundEffect(int effectId) { 3954 checkThread(); 3955 3956 try { 3957 final AudioManager audioManager = getAudioManager(); 3958 3959 switch (effectId) { 3960 case SoundEffectConstants.CLICK: 3961 audioManager.playSoundEffect(AudioManager.FX_KEY_CLICK); 3962 return; 3963 case SoundEffectConstants.NAVIGATION_DOWN: 3964 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_DOWN); 3965 return; 3966 case SoundEffectConstants.NAVIGATION_LEFT: 3967 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_LEFT); 3968 return; 3969 case SoundEffectConstants.NAVIGATION_RIGHT: 3970 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_RIGHT); 3971 return; 3972 case SoundEffectConstants.NAVIGATION_UP: 3973 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_UP); 3974 return; 3975 default: 3976 throw new IllegalArgumentException("unknown effect id " + effectId + 3977 " not defined in " + SoundEffectConstants.class.getCanonicalName()); 3978 } 3979 } catch (IllegalStateException e) { 3980 // Exception thrown by getAudioManager() when mView is null 3981 Log.e(TAG, "FATAL EXCEPTION when attempting to play sound effect: " + e); 3982 e.printStackTrace(); 3983 } 3984 } 3985 3986 /** 3987 * {@inheritDoc} 3988 */ 3989 public boolean performHapticFeedback(int effectId, boolean always) { 3990 try { 3991 return sWindowSession.performHapticFeedback(mWindow, effectId, always); 3992 } catch (RemoteException e) { 3993 return false; 3994 } 3995 } 3996 3997 /** 3998 * {@inheritDoc} 3999 */ 4000 public View focusSearch(View focused, int direction) { 4001 checkThread(); 4002 if (!(mView instanceof ViewGroup)) { 4003 return null; 4004 } 4005 return FocusFinder.getInstance().findNextFocus((ViewGroup) mView, focused, direction); 4006 } 4007 4008 public void debug() { 4009 mView.debug(); 4010 } 4011 4012 public void dumpGfxInfo(int[] info) { 4013 if (mView != null) { 4014 getGfxInfo(mView, info); 4015 } else { 4016 info[0] = info[1] = 0; 4017 } 4018 } 4019 4020 private static void getGfxInfo(View view, int[] info) { 4021 DisplayList displayList = view.mDisplayList; 4022 info[0]++; 4023 if (displayList != null) { 4024 info[1] += displayList.getSize(); 4025 } 4026 4027 if (view instanceof ViewGroup) { 4028 ViewGroup group = (ViewGroup) view; 4029 4030 int count = group.getChildCount(); 4031 for (int i = 0; i < count; i++) { 4032 getGfxInfo(group.getChildAt(i), info); 4033 } 4034 } 4035 } 4036 4037 public void die(boolean immediate) { 4038 if (immediate) { 4039 doDie(); 4040 } else { 4041 if (!mIsDrawing) { 4042 destroyHardwareRenderer(); 4043 } else { 4044 Log.e(TAG, "Attempting to destroy the window while drawing!\n" + 4045 " window=" + this + ", title=" + mWindowAttributes.getTitle()); 4046 } 4047 mHandler.sendEmptyMessage(MSG_DIE); 4048 } 4049 } 4050 4051 void doDie() { 4052 checkThread(); 4053 if (LOCAL_LOGV) Log.v(TAG, "DIE in " + this + " of " + mSurface); 4054 synchronized (this) { 4055 if (mAdded) { 4056 dispatchDetachedFromWindow(); 4057 } 4058 4059 if (mAdded && !mFirst) { 4060 destroyHardwareRenderer(); 4061 4062 if (mView != null) { 4063 int viewVisibility = mView.getVisibility(); 4064 boolean viewVisibilityChanged = mViewVisibility != viewVisibility; 4065 if (mWindowAttributesChanged || viewVisibilityChanged) { 4066 // If layout params have been changed, first give them 4067 // to the window manager to make sure it has the correct 4068 // animation info. 4069 try { 4070 if ((relayoutWindow(mWindowAttributes, viewVisibility, false) 4071 & WindowManagerImpl.RELAYOUT_RES_FIRST_TIME) != 0) { 4072 sWindowSession.finishDrawing(mWindow); 4073 } 4074 } catch (RemoteException e) { 4075 } 4076 } 4077 4078 mSurface.release(); 4079 } 4080 } 4081 4082 mAdded = false; 4083 } 4084 } 4085 4086 public void requestUpdateConfiguration(Configuration config) { 4087 Message msg = mHandler.obtainMessage(MSG_UPDATE_CONFIGURATION, config); 4088 mHandler.sendMessage(msg); 4089 } 4090 4091 public void loadSystemProperties() { 4092 boolean layout = SystemProperties.getBoolean( 4093 View.DEBUG_LAYOUT_PROPERTY, false); 4094 if (layout != mAttachInfo.mDebugLayout) { 4095 mAttachInfo.mDebugLayout = layout; 4096 if (!mHandler.hasMessages(MSG_INVALIDATE_WORLD)) { 4097 mHandler.sendEmptyMessageDelayed(MSG_INVALIDATE_WORLD, 200); 4098 } 4099 } 4100 } 4101 4102 private void destroyHardwareRenderer() { 4103 AttachInfo attachInfo = mAttachInfo; 4104 HardwareRenderer hardwareRenderer = attachInfo.mHardwareRenderer; 4105 4106 if (hardwareRenderer != null) { 4107 if (mView != null) { 4108 hardwareRenderer.destroyHardwareResources(mView); 4109 } 4110 hardwareRenderer.destroy(true); 4111 hardwareRenderer.setRequested(false); 4112 4113 attachInfo.mHardwareRenderer = null; 4114 attachInfo.mHardwareAccelerated = false; 4115 } 4116 } 4117 4118 void dispatchImeFinishedEvent(int seq, boolean handled) { 4119 Message msg = mHandler.obtainMessage(MSG_IME_FINISHED_EVENT); 4120 msg.arg1 = seq; 4121 msg.arg2 = handled ? 1 : 0; 4122 msg.setAsynchronous(true); 4123 mHandler.sendMessage(msg); 4124 } 4125 4126 public void dispatchFinishInputConnection(InputConnection connection) { 4127 Message msg = mHandler.obtainMessage(MSG_FINISH_INPUT_CONNECTION, connection); 4128 mHandler.sendMessage(msg); 4129 } 4130 4131 public void dispatchResized(int w, int h, Rect contentInsets, 4132 Rect visibleInsets, boolean reportDraw, Configuration newConfig) { 4133 if (DEBUG_LAYOUT) Log.v(TAG, "Resizing " + this + ": w=" + w 4134 + " h=" + h + " contentInsets=" + contentInsets.toShortString() 4135 + " visibleInsets=" + visibleInsets.toShortString() 4136 + " reportDraw=" + reportDraw); 4137 Message msg = mHandler.obtainMessage(reportDraw ? MSG_RESIZED_REPORT :MSG_RESIZED); 4138 if (mTranslator != null) { 4139 mTranslator.translateRectInScreenToAppWindow(contentInsets); 4140 mTranslator.translateRectInScreenToAppWindow(visibleInsets); 4141 w *= mTranslator.applicationInvertedScale; 4142 h *= mTranslator.applicationInvertedScale; 4143 } 4144 msg.arg1 = w; 4145 msg.arg2 = h; 4146 ResizedInfo ri = new ResizedInfo(); 4147 ri.contentInsets = new Rect(contentInsets); 4148 ri.visibleInsets = new Rect(visibleInsets); 4149 ri.newConfig = newConfig; 4150 msg.obj = ri; 4151 mHandler.sendMessage(msg); 4152 } 4153 4154 /** 4155 * Represents a pending input event that is waiting in a queue. 4156 * 4157 * Input events are processed in serial order by the timestamp specified by 4158 * {@link InputEvent#getEventTimeNano()}. In general, the input dispatcher delivers 4159 * one input event to the application at a time and waits for the application 4160 * to finish handling it before delivering the next one. 4161 * 4162 * However, because the application or IME can synthesize and inject multiple 4163 * key events at a time without going through the input dispatcher, we end up 4164 * needing a queue on the application's side. 4165 */ 4166 private static final class QueuedInputEvent { 4167 public static final int FLAG_DELIVER_POST_IME = 1; 4168 4169 public QueuedInputEvent mNext; 4170 4171 public InputEvent mEvent; 4172 public InputEventReceiver mReceiver; 4173 public int mFlags; 4174 4175 // Used for latency calculations. 4176 public long mReceiveTimeNanos; 4177 public long mDeliverTimeNanos; 4178 public long mDeliverPostImeTimeNanos; 4179 } 4180 4181 private QueuedInputEvent obtainQueuedInputEvent(InputEvent event, 4182 InputEventReceiver receiver, int flags) { 4183 QueuedInputEvent q = mQueuedInputEventPool; 4184 if (q != null) { 4185 mQueuedInputEventPoolSize -= 1; 4186 mQueuedInputEventPool = q.mNext; 4187 q.mNext = null; 4188 } else { 4189 q = new QueuedInputEvent(); 4190 } 4191 4192 q.mEvent = event; 4193 q.mReceiver = receiver; 4194 q.mFlags = flags; 4195 return q; 4196 } 4197 4198 private void recycleQueuedInputEvent(QueuedInputEvent q) { 4199 q.mEvent = null; 4200 q.mReceiver = null; 4201 4202 if (mQueuedInputEventPoolSize < MAX_QUEUED_INPUT_EVENT_POOL_SIZE) { 4203 mQueuedInputEventPoolSize += 1; 4204 q.mNext = mQueuedInputEventPool; 4205 mQueuedInputEventPool = q; 4206 } 4207 } 4208 4209 void enqueueInputEvent(InputEvent event) { 4210 enqueueInputEvent(event, null, 0, false); 4211 } 4212 4213 void enqueueInputEvent(InputEvent event, 4214 InputEventReceiver receiver, int flags, boolean processImmediately) { 4215 QueuedInputEvent q = obtainQueuedInputEvent(event, receiver, flags); 4216 4217 if (ViewDebug.DEBUG_LATENCY) { 4218 q.mReceiveTimeNanos = System.nanoTime(); 4219 q.mDeliverTimeNanos = 0; 4220 q.mDeliverPostImeTimeNanos = 0; 4221 } 4222 4223 // Always enqueue the input event in order, regardless of its time stamp. 4224 // We do this because the application or the IME may inject key events 4225 // in response to touch events and we want to ensure that the injected keys 4226 // are processed in the order they were received and we cannot trust that 4227 // the time stamp of injected events are monotonic. 4228 QueuedInputEvent last = mFirstPendingInputEvent; 4229 if (last == null) { 4230 mFirstPendingInputEvent = q; 4231 } else { 4232 while (last.mNext != null) { 4233 last = last.mNext; 4234 } 4235 last.mNext = q; 4236 } 4237 4238 if (processImmediately) { 4239 doProcessInputEvents(); 4240 } else { 4241 scheduleProcessInputEvents(); 4242 } 4243 } 4244 4245 private void scheduleProcessInputEvents() { 4246 if (!mProcessInputEventsScheduled) { 4247 mProcessInputEventsScheduled = true; 4248 Message msg = mHandler.obtainMessage(MSG_PROCESS_INPUT_EVENTS); 4249 msg.setAsynchronous(true); 4250 mHandler.sendMessage(msg); 4251 } 4252 } 4253 4254 void doProcessInputEvents() { 4255 while (mCurrentInputEvent == null && mFirstPendingInputEvent != null) { 4256 QueuedInputEvent q = mFirstPendingInputEvent; 4257 mFirstPendingInputEvent = q.mNext; 4258 q.mNext = null; 4259 mCurrentInputEvent = q; 4260 deliverInputEvent(q); 4261 } 4262 4263 // We are done processing all input events that we can process right now 4264 // so we can clear the pending flag immediately. 4265 if (mProcessInputEventsScheduled) { 4266 mProcessInputEventsScheduled = false; 4267 mHandler.removeMessages(MSG_PROCESS_INPUT_EVENTS); 4268 } 4269 } 4270 4271 private void finishInputEvent(QueuedInputEvent q, boolean handled) { 4272 if (q != mCurrentInputEvent) { 4273 throw new IllegalStateException("finished input event out of order"); 4274 } 4275 4276 if (ViewDebug.DEBUG_LATENCY) { 4277 final long now = System.nanoTime(); 4278 final long eventTime = q.mEvent.getEventTimeNano(); 4279 final StringBuilder msg = new StringBuilder(); 4280 msg.append("Spent "); 4281 msg.append((now - q.mReceiveTimeNanos) * 0.000001f); 4282 msg.append("ms processing "); 4283 if (q.mEvent instanceof KeyEvent) { 4284 final KeyEvent keyEvent = (KeyEvent)q.mEvent; 4285 msg.append("key event, action="); 4286 msg.append(KeyEvent.actionToString(keyEvent.getAction())); 4287 } else { 4288 final MotionEvent motionEvent = (MotionEvent)q.mEvent; 4289 msg.append("motion event, action="); 4290 msg.append(MotionEvent.actionToString(motionEvent.getAction())); 4291 msg.append(", historySize="); 4292 msg.append(motionEvent.getHistorySize()); 4293 } 4294 msg.append(", handled="); 4295 msg.append(handled); 4296 msg.append(", received at +"); 4297 msg.append((q.mReceiveTimeNanos - eventTime) * 0.000001f); 4298 if (q.mDeliverTimeNanos != 0) { 4299 msg.append("ms, delivered at +"); 4300 msg.append((q.mDeliverTimeNanos - eventTime) * 0.000001f); 4301 } 4302 if (q.mDeliverPostImeTimeNanos != 0) { 4303 msg.append("ms, delivered post IME at +"); 4304 msg.append((q.mDeliverPostImeTimeNanos - eventTime) * 0.000001f); 4305 } 4306 msg.append("ms, finished at +"); 4307 msg.append((now - eventTime) * 0.000001f); 4308 msg.append("ms."); 4309 Log.d(ViewDebug.DEBUG_LATENCY_TAG, msg.toString()); 4310 } 4311 4312 if (q.mReceiver != null) { 4313 q.mReceiver.finishInputEvent(q.mEvent, handled); 4314 } else { 4315 q.mEvent.recycleIfNeededAfterDispatch(); 4316 } 4317 4318 recycleQueuedInputEvent(q); 4319 4320 mCurrentInputEvent = null; 4321 if (mFirstPendingInputEvent != null) { 4322 scheduleProcessInputEvents(); 4323 } 4324 } 4325 4326 void scheduleConsumeBatchedInput() { 4327 if (!mConsumeBatchedInputScheduled) { 4328 mConsumeBatchedInputScheduled = true; 4329 mChoreographer.postCallback(Choreographer.CALLBACK_INPUT, 4330 mConsumedBatchedInputRunnable, null); 4331 } 4332 } 4333 4334 void unscheduleConsumeBatchedInput() { 4335 if (mConsumeBatchedInputScheduled) { 4336 mConsumeBatchedInputScheduled = false; 4337 mChoreographer.removeCallbacks(Choreographer.CALLBACK_INPUT, 4338 mConsumedBatchedInputRunnable, null); 4339 } 4340 } 4341 4342 void doConsumeBatchedInput(long frameTimeNanos) { 4343 if (mConsumeBatchedInputScheduled) { 4344 mConsumeBatchedInputScheduled = false; 4345 if (mInputEventReceiver != null) { 4346 mInputEventReceiver.consumeBatchedInputEvents(frameTimeNanos); 4347 } 4348 doProcessInputEvents(); 4349 } 4350 } 4351 4352 final class TraversalRunnable implements Runnable { 4353 @Override 4354 public void run() { 4355 doTraversal(); 4356 } 4357 } 4358 final TraversalRunnable mTraversalRunnable = new TraversalRunnable(); 4359 4360 final class WindowInputEventReceiver extends InputEventReceiver { 4361 public WindowInputEventReceiver(InputChannel inputChannel, Looper looper) { 4362 super(inputChannel, looper); 4363 } 4364 4365 @Override 4366 public void onInputEvent(InputEvent event) { 4367 enqueueInputEvent(event, this, 0, true); 4368 } 4369 4370 @Override 4371 public void onBatchedInputEventPending() { 4372 scheduleConsumeBatchedInput(); 4373 } 4374 4375 @Override 4376 public void dispose() { 4377 unscheduleConsumeBatchedInput(); 4378 super.dispose(); 4379 } 4380 } 4381 WindowInputEventReceiver mInputEventReceiver; 4382 4383 final class ConsumeBatchedInputRunnable implements Runnable { 4384 @Override 4385 public void run() { 4386 doConsumeBatchedInput(mChoreographer.getFrameTimeNanos()); 4387 } 4388 } 4389 final ConsumeBatchedInputRunnable mConsumedBatchedInputRunnable = 4390 new ConsumeBatchedInputRunnable(); 4391 boolean mConsumeBatchedInputScheduled; 4392 4393 final class InvalidateOnAnimationRunnable implements Runnable { 4394 private boolean mPosted; 4395 private ArrayList<View> mViews = new ArrayList<View>(); 4396 private ArrayList<AttachInfo.InvalidateInfo> mViewRects = 4397 new ArrayList<AttachInfo.InvalidateInfo>(); 4398 private View[] mTempViews; 4399 private AttachInfo.InvalidateInfo[] mTempViewRects; 4400 4401 public void addView(View view) { 4402 synchronized (this) { 4403 mViews.add(view); 4404 postIfNeededLocked(); 4405 } 4406 } 4407 4408 public void addViewRect(AttachInfo.InvalidateInfo info) { 4409 synchronized (this) { 4410 mViewRects.add(info); 4411 postIfNeededLocked(); 4412 } 4413 } 4414 4415 public void removeView(View view) { 4416 synchronized (this) { 4417 mViews.remove(view); 4418 4419 for (int i = mViewRects.size(); i-- > 0; ) { 4420 AttachInfo.InvalidateInfo info = mViewRects.get(i); 4421 if (info.target == view) { 4422 mViewRects.remove(i); 4423 info.release(); 4424 } 4425 } 4426 4427 if (mPosted && mViews.isEmpty() && mViewRects.isEmpty()) { 4428 mChoreographer.removeCallbacks(Choreographer.CALLBACK_ANIMATION, this, null); 4429 mPosted = false; 4430 } 4431 } 4432 } 4433 4434 @Override 4435 public void run() { 4436 final int viewCount; 4437 final int viewRectCount; 4438 synchronized (this) { 4439 mPosted = false; 4440 4441 viewCount = mViews.size(); 4442 if (viewCount != 0) { 4443 mTempViews = mViews.toArray(mTempViews != null 4444 ? mTempViews : new View[viewCount]); 4445 mViews.clear(); 4446 } 4447 4448 viewRectCount = mViewRects.size(); 4449 if (viewRectCount != 0) { 4450 mTempViewRects = mViewRects.toArray(mTempViewRects != null 4451 ? mTempViewRects : new AttachInfo.InvalidateInfo[viewRectCount]); 4452 mViewRects.clear(); 4453 } 4454 } 4455 4456 for (int i = 0; i < viewCount; i++) { 4457 mTempViews[i].invalidate(); 4458 mTempViews[i] = null; 4459 } 4460 4461 for (int i = 0; i < viewRectCount; i++) { 4462 final View.AttachInfo.InvalidateInfo info = mTempViewRects[i]; 4463 info.target.invalidate(info.left, info.top, info.right, info.bottom); 4464 info.release(); 4465 } 4466 } 4467 4468 private void postIfNeededLocked() { 4469 if (!mPosted) { 4470 mChoreographer.postCallback(Choreographer.CALLBACK_ANIMATION, this, null); 4471 mPosted = true; 4472 } 4473 } 4474 } 4475 final InvalidateOnAnimationRunnable mInvalidateOnAnimationRunnable = 4476 new InvalidateOnAnimationRunnable(); 4477 4478 public void dispatchInvalidateDelayed(View view, long delayMilliseconds) { 4479 Message msg = mHandler.obtainMessage(MSG_INVALIDATE, view); 4480 mHandler.sendMessageDelayed(msg, delayMilliseconds); 4481 } 4482 4483 public void dispatchInvalidateRectDelayed(AttachInfo.InvalidateInfo info, 4484 long delayMilliseconds) { 4485 final Message msg = mHandler.obtainMessage(MSG_INVALIDATE_RECT, info); 4486 mHandler.sendMessageDelayed(msg, delayMilliseconds); 4487 } 4488 4489 public void dispatchInvalidateOnAnimation(View view) { 4490 mInvalidateOnAnimationRunnable.addView(view); 4491 } 4492 4493 public void dispatchInvalidateRectOnAnimation(AttachInfo.InvalidateInfo info) { 4494 mInvalidateOnAnimationRunnable.addViewRect(info); 4495 } 4496 4497 public void enqueueDisplayList(DisplayList displayList) { 4498 mDisplayLists.add(displayList); 4499 4500 mHandler.removeMessages(MSG_INVALIDATE_DISPLAY_LIST); 4501 Message msg = mHandler.obtainMessage(MSG_INVALIDATE_DISPLAY_LIST); 4502 mHandler.sendMessage(msg); 4503 } 4504 4505 public void dequeueDisplayList(DisplayList displayList) { 4506 if (mDisplayLists.remove(displayList)) { 4507 displayList.invalidate(); 4508 if (mDisplayLists.size() == 0) { 4509 mHandler.removeMessages(MSG_INVALIDATE_DISPLAY_LIST); 4510 } 4511 } 4512 } 4513 4514 public void cancelInvalidate(View view) { 4515 mHandler.removeMessages(MSG_INVALIDATE, view); 4516 // fixme: might leak the AttachInfo.InvalidateInfo objects instead of returning 4517 // them to the pool 4518 mHandler.removeMessages(MSG_INVALIDATE_RECT, view); 4519 mInvalidateOnAnimationRunnable.removeView(view); 4520 } 4521 4522 public void dispatchKey(KeyEvent event) { 4523 Message msg = mHandler.obtainMessage(MSG_DISPATCH_KEY, event); 4524 msg.setAsynchronous(true); 4525 mHandler.sendMessage(msg); 4526 } 4527 4528 public void dispatchKeyFromIme(KeyEvent event) { 4529 Message msg = mHandler.obtainMessage(MSG_DISPATCH_KEY_FROM_IME, event); 4530 msg.setAsynchronous(true); 4531 mHandler.sendMessage(msg); 4532 } 4533 4534 public void dispatchUnhandledKey(KeyEvent event) { 4535 if ((event.getFlags() & KeyEvent.FLAG_FALLBACK) == 0) { 4536 final KeyCharacterMap kcm = event.getKeyCharacterMap(); 4537 final int keyCode = event.getKeyCode(); 4538 final int metaState = event.getMetaState(); 4539 4540 // Check for fallback actions specified by the key character map. 4541 KeyCharacterMap.FallbackAction fallbackAction = 4542 kcm.getFallbackAction(keyCode, metaState); 4543 if (fallbackAction != null) { 4544 final int flags = event.getFlags() | KeyEvent.FLAG_FALLBACK; 4545 KeyEvent fallbackEvent = KeyEvent.obtain( 4546 event.getDownTime(), event.getEventTime(), 4547 event.getAction(), fallbackAction.keyCode, 4548 event.getRepeatCount(), fallbackAction.metaState, 4549 event.getDeviceId(), event.getScanCode(), 4550 flags, event.getSource(), null); 4551 fallbackAction.recycle(); 4552 4553 dispatchKey(fallbackEvent); 4554 } 4555 } 4556 } 4557 4558 public void dispatchAppVisibility(boolean visible) { 4559 Message msg = mHandler.obtainMessage(MSG_DISPATCH_APP_VISIBILITY); 4560 msg.arg1 = visible ? 1 : 0; 4561 mHandler.sendMessage(msg); 4562 } 4563 4564 public void dispatchScreenStateChange(boolean on) { 4565 Message msg = mHandler.obtainMessage(MSG_DISPATCH_SCREEN_STATE); 4566 msg.arg1 = on ? 1 : 0; 4567 mHandler.sendMessage(msg); 4568 } 4569 4570 public void dispatchGetNewSurface() { 4571 Message msg = mHandler.obtainMessage(MSG_DISPATCH_GET_NEW_SURFACE); 4572 mHandler.sendMessage(msg); 4573 } 4574 4575 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 4576 Message msg = Message.obtain(); 4577 msg.what = MSG_WINDOW_FOCUS_CHANGED; 4578 msg.arg1 = hasFocus ? 1 : 0; 4579 msg.arg2 = inTouchMode ? 1 : 0; 4580 mHandler.sendMessage(msg); 4581 } 4582 4583 public void dispatchCloseSystemDialogs(String reason) { 4584 Message msg = Message.obtain(); 4585 msg.what = MSG_CLOSE_SYSTEM_DIALOGS; 4586 msg.obj = reason; 4587 mHandler.sendMessage(msg); 4588 } 4589 4590 public void dispatchDragEvent(DragEvent event) { 4591 final int what; 4592 if (event.getAction() == DragEvent.ACTION_DRAG_LOCATION) { 4593 what = MSG_DISPATCH_DRAG_LOCATION_EVENT; 4594 mHandler.removeMessages(what); 4595 } else { 4596 what = MSG_DISPATCH_DRAG_EVENT; 4597 } 4598 Message msg = mHandler.obtainMessage(what, event); 4599 mHandler.sendMessage(msg); 4600 } 4601 4602 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 4603 int localValue, int localChanges) { 4604 SystemUiVisibilityInfo args = new SystemUiVisibilityInfo(); 4605 args.seq = seq; 4606 args.globalVisibility = globalVisibility; 4607 args.localValue = localValue; 4608 args.localChanges = localChanges; 4609 mHandler.sendMessage(mHandler.obtainMessage(MSG_DISPATCH_SYSTEM_UI_VISIBILITY, args)); 4610 } 4611 4612 public void dispatchDoneAnimating() { 4613 mHandler.sendEmptyMessage(MSG_DISPATCH_DONE_ANIMATING); 4614 } 4615 4616 public void dispatchCheckFocus() { 4617 if (!mHandler.hasMessages(MSG_CHECK_FOCUS)) { 4618 // This will result in a call to checkFocus() below. 4619 mHandler.sendEmptyMessage(MSG_CHECK_FOCUS); 4620 } 4621 } 4622 4623 /** 4624 * Post a callback to send a 4625 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 4626 * This event is send at most once every 4627 * {@link ViewConfiguration#getSendRecurringAccessibilityEventsInterval()}. 4628 */ 4629 private void postSendWindowContentChangedCallback(View source) { 4630 if (mSendWindowContentChangedAccessibilityEvent == null) { 4631 mSendWindowContentChangedAccessibilityEvent = 4632 new SendWindowContentChangedAccessibilityEvent(); 4633 } 4634 View oldSource = mSendWindowContentChangedAccessibilityEvent.mSource; 4635 if (oldSource == null) { 4636 mSendWindowContentChangedAccessibilityEvent.mSource = source; 4637 mHandler.postDelayed(mSendWindowContentChangedAccessibilityEvent, 4638 ViewConfiguration.getSendRecurringAccessibilityEventsInterval()); 4639 } else { 4640 mSendWindowContentChangedAccessibilityEvent.mSource = 4641 getCommonPredecessor(oldSource, source); 4642 } 4643 } 4644 4645 /** 4646 * Remove a posted callback to send a 4647 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 4648 */ 4649 private void removeSendWindowContentChangedCallback() { 4650 if (mSendWindowContentChangedAccessibilityEvent != null) { 4651 mHandler.removeCallbacks(mSendWindowContentChangedAccessibilityEvent); 4652 } 4653 } 4654 4655 public boolean showContextMenuForChild(View originalView) { 4656 return false; 4657 } 4658 4659 public ActionMode startActionModeForChild(View originalView, ActionMode.Callback callback) { 4660 return null; 4661 } 4662 4663 public void createContextMenu(ContextMenu menu) { 4664 } 4665 4666 public void childDrawableStateChanged(View child) { 4667 } 4668 4669 public boolean requestSendAccessibilityEvent(View child, AccessibilityEvent event) { 4670 if (mView == null) { 4671 return false; 4672 } 4673 // Watch for accessibility focus change events from virtual nodes 4674 // to keep track of accessibility focus being on a virtual node. 4675 final int eventType = event.getEventType(); 4676 switch (eventType) { 4677 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUSED: { 4678 final long sourceId = event.getSourceNodeId(); 4679 // If the event is not from a virtual node we are not interested. 4680 final int virtualViewId = AccessibilityNodeInfo.getVirtualDescendantId(sourceId); 4681 if (virtualViewId == AccessibilityNodeInfo.UNDEFINED) { 4682 break; 4683 } 4684 final int realViewId = AccessibilityNodeInfo.getAccessibilityViewId(sourceId); 4685 View focusHost = mView.findViewByAccessibilityId(realViewId); 4686 setAccessibilityFocusedHost(focusHost); 4687 } break; 4688 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUS_CLEARED: { 4689 final long sourceId = event.getSourceNodeId(); 4690 // If the event is not from a virtual node we are not interested. 4691 final int virtualViewId = AccessibilityNodeInfo.getVirtualDescendantId(sourceId); 4692 if (virtualViewId == AccessibilityNodeInfo.UNDEFINED) { 4693 break; 4694 } 4695 setAccessibilityFocusedHost(null); 4696 } break; 4697 } 4698 mAccessibilityManager.sendAccessibilityEvent(event); 4699 return true; 4700 } 4701 4702 @Override 4703 public void childAccessibilityStateChanged(View child) { 4704 postSendWindowContentChangedCallback(child); 4705 } 4706 4707 private View getCommonPredecessor(View first, View second) { 4708 if (mAttachInfo != null) { 4709 if (mTempHashSet == null) { 4710 mTempHashSet = new HashSet<View>(); 4711 } 4712 HashSet<View> seen = mTempHashSet; 4713 seen.clear(); 4714 View firstCurrent = first; 4715 while (firstCurrent != null) { 4716 seen.add(firstCurrent); 4717 ViewParent firstCurrentParent = firstCurrent.mParent; 4718 if (firstCurrentParent instanceof View) { 4719 firstCurrent = (View) firstCurrentParent; 4720 } else { 4721 firstCurrent = null; 4722 } 4723 } 4724 View secondCurrent = second; 4725 while (secondCurrent != null) { 4726 if (seen.contains(secondCurrent)) { 4727 seen.clear(); 4728 return secondCurrent; 4729 } 4730 ViewParent secondCurrentParent = secondCurrent.mParent; 4731 if (secondCurrentParent instanceof View) { 4732 secondCurrent = (View) secondCurrentParent; 4733 } else { 4734 secondCurrent = null; 4735 } 4736 } 4737 seen.clear(); 4738 } 4739 return null; 4740 } 4741 4742 void checkThread() { 4743 if (mThread != Thread.currentThread()) { 4744 throw new CalledFromWrongThreadException( 4745 "Only the original thread that created a view hierarchy can touch its views."); 4746 } 4747 } 4748 4749 public void requestDisallowInterceptTouchEvent(boolean disallowIntercept) { 4750 // ViewAncestor never intercepts touch event, so this can be a no-op 4751 } 4752 4753 public boolean requestChildRectangleOnScreen(View child, Rect rectangle, 4754 boolean immediate) { 4755 return scrollToRectOrFocus(rectangle, immediate); 4756 } 4757 4758 public void childHasTransientStateChanged(View child, boolean hasTransientState) { 4759 // Do nothing. 4760 } 4761 4762 class TakenSurfaceHolder extends BaseSurfaceHolder { 4763 @Override 4764 public boolean onAllowLockCanvas() { 4765 return mDrawingAllowed; 4766 } 4767 4768 @Override 4769 public void onRelayoutContainer() { 4770 // Not currently interesting -- from changing between fixed and layout size. 4771 } 4772 4773 public void setFormat(int format) { 4774 ((RootViewSurfaceTaker)mView).setSurfaceFormat(format); 4775 } 4776 4777 public void setType(int type) { 4778 ((RootViewSurfaceTaker)mView).setSurfaceType(type); 4779 } 4780 4781 @Override 4782 public void onUpdateSurface() { 4783 // We take care of format and type changes on our own. 4784 throw new IllegalStateException("Shouldn't be here"); 4785 } 4786 4787 public boolean isCreating() { 4788 return mIsCreating; 4789 } 4790 4791 @Override 4792 public void setFixedSize(int width, int height) { 4793 throw new UnsupportedOperationException( 4794 "Currently only support sizing from layout"); 4795 } 4796 4797 public void setKeepScreenOn(boolean screenOn) { 4798 ((RootViewSurfaceTaker)mView).setSurfaceKeepScreenOn(screenOn); 4799 } 4800 } 4801 4802 static class InputMethodCallback extends IInputMethodCallback.Stub { 4803 private WeakReference<ViewRootImpl> mViewAncestor; 4804 4805 public InputMethodCallback(ViewRootImpl viewAncestor) { 4806 mViewAncestor = new WeakReference<ViewRootImpl>(viewAncestor); 4807 } 4808 4809 public void finishedEvent(int seq, boolean handled) { 4810 final ViewRootImpl viewAncestor = mViewAncestor.get(); 4811 if (viewAncestor != null) { 4812 viewAncestor.dispatchImeFinishedEvent(seq, handled); 4813 } 4814 } 4815 4816 public void sessionCreated(IInputMethodSession session) { 4817 // Stub -- not for use in the client. 4818 } 4819 } 4820 4821 static class W extends IWindow.Stub { 4822 private final WeakReference<ViewRootImpl> mViewAncestor; 4823 4824 W(ViewRootImpl viewAncestor) { 4825 mViewAncestor = new WeakReference<ViewRootImpl>(viewAncestor); 4826 } 4827 4828 public void resized(int w, int h, Rect contentInsets, 4829 Rect visibleInsets, boolean reportDraw, Configuration newConfig) { 4830 final ViewRootImpl viewAncestor = mViewAncestor.get(); 4831 if (viewAncestor != null) { 4832 viewAncestor.dispatchResized(w, h, contentInsets, 4833 visibleInsets, reportDraw, newConfig); 4834 } 4835 } 4836 4837 public void dispatchAppVisibility(boolean visible) { 4838 final ViewRootImpl viewAncestor = mViewAncestor.get(); 4839 if (viewAncestor != null) { 4840 viewAncestor.dispatchAppVisibility(visible); 4841 } 4842 } 4843 4844 public void dispatchScreenState(boolean on) { 4845 final ViewRootImpl viewAncestor = mViewAncestor.get(); 4846 if (viewAncestor != null) { 4847 viewAncestor.dispatchScreenStateChange(on); 4848 } 4849 } 4850 4851 public void dispatchGetNewSurface() { 4852 final ViewRootImpl viewAncestor = mViewAncestor.get(); 4853 if (viewAncestor != null) { 4854 viewAncestor.dispatchGetNewSurface(); 4855 } 4856 } 4857 4858 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 4859 final ViewRootImpl viewAncestor = mViewAncestor.get(); 4860 if (viewAncestor != null) { 4861 viewAncestor.windowFocusChanged(hasFocus, inTouchMode); 4862 } 4863 } 4864 4865 private static int checkCallingPermission(String permission) { 4866 try { 4867 return ActivityManagerNative.getDefault().checkPermission( 4868 permission, Binder.getCallingPid(), Binder.getCallingUid()); 4869 } catch (RemoteException e) { 4870 return PackageManager.PERMISSION_DENIED; 4871 } 4872 } 4873 4874 public void executeCommand(String command, String parameters, ParcelFileDescriptor out) { 4875 final ViewRootImpl viewAncestor = mViewAncestor.get(); 4876 if (viewAncestor != null) { 4877 final View view = viewAncestor.mView; 4878 if (view != null) { 4879 if (checkCallingPermission(Manifest.permission.DUMP) != 4880 PackageManager.PERMISSION_GRANTED) { 4881 throw new SecurityException("Insufficient permissions to invoke" 4882 + " executeCommand() from pid=" + Binder.getCallingPid() 4883 + ", uid=" + Binder.getCallingUid()); 4884 } 4885 4886 OutputStream clientStream = null; 4887 try { 4888 clientStream = new ParcelFileDescriptor.AutoCloseOutputStream(out); 4889 ViewDebug.dispatchCommand(view, command, parameters, clientStream); 4890 } catch (IOException e) { 4891 e.printStackTrace(); 4892 } finally { 4893 if (clientStream != null) { 4894 try { 4895 clientStream.close(); 4896 } catch (IOException e) { 4897 e.printStackTrace(); 4898 } 4899 } 4900 } 4901 } 4902 } 4903 } 4904 4905 public void closeSystemDialogs(String reason) { 4906 final ViewRootImpl viewAncestor = mViewAncestor.get(); 4907 if (viewAncestor != null) { 4908 viewAncestor.dispatchCloseSystemDialogs(reason); 4909 } 4910 } 4911 4912 public void dispatchWallpaperOffsets(float x, float y, float xStep, float yStep, 4913 boolean sync) { 4914 if (sync) { 4915 try { 4916 sWindowSession.wallpaperOffsetsComplete(asBinder()); 4917 } catch (RemoteException e) { 4918 } 4919 } 4920 } 4921 4922 public void dispatchWallpaperCommand(String action, int x, int y, 4923 int z, Bundle extras, boolean sync) { 4924 if (sync) { 4925 try { 4926 sWindowSession.wallpaperCommandComplete(asBinder(), null); 4927 } catch (RemoteException e) { 4928 } 4929 } 4930 } 4931 4932 /* Drag/drop */ 4933 public void dispatchDragEvent(DragEvent event) { 4934 final ViewRootImpl viewAncestor = mViewAncestor.get(); 4935 if (viewAncestor != null) { 4936 viewAncestor.dispatchDragEvent(event); 4937 } 4938 } 4939 4940 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 4941 int localValue, int localChanges) { 4942 final ViewRootImpl viewAncestor = mViewAncestor.get(); 4943 if (viewAncestor != null) { 4944 viewAncestor.dispatchSystemUiVisibilityChanged(seq, globalVisibility, 4945 localValue, localChanges); 4946 } 4947 } 4948 4949 public void doneAnimating() { 4950 final ViewRootImpl viewAncestor = mViewAncestor.get(); 4951 if (viewAncestor != null) { 4952 viewAncestor.dispatchDoneAnimating(); 4953 } 4954 } 4955 } 4956 4957 /** 4958 * Maintains state information for a single trackball axis, generating 4959 * discrete (DPAD) movements based on raw trackball motion. 4960 */ 4961 static final class TrackballAxis { 4962 /** 4963 * The maximum amount of acceleration we will apply. 4964 */ 4965 static final float MAX_ACCELERATION = 20; 4966 4967 /** 4968 * The maximum amount of time (in milliseconds) between events in order 4969 * for us to consider the user to be doing fast trackball movements, 4970 * and thus apply an acceleration. 4971 */ 4972 static final long FAST_MOVE_TIME = 150; 4973 4974 /** 4975 * Scaling factor to the time (in milliseconds) between events to how 4976 * much to multiple/divide the current acceleration. When movement 4977 * is < FAST_MOVE_TIME this multiplies the acceleration; when > 4978 * FAST_MOVE_TIME it divides it. 4979 */ 4980 static final float ACCEL_MOVE_SCALING_FACTOR = (1.0f/40); 4981 4982 float position; 4983 float absPosition; 4984 float acceleration = 1; 4985 long lastMoveTime = 0; 4986 int step; 4987 int dir; 4988 int nonAccelMovement; 4989 4990 void reset(int _step) { 4991 position = 0; 4992 acceleration = 1; 4993 lastMoveTime = 0; 4994 step = _step; 4995 dir = 0; 4996 } 4997 4998 /** 4999 * Add trackball movement into the state. If the direction of movement 5000 * has been reversed, the state is reset before adding the 5001 * movement (so that you don't have to compensate for any previously 5002 * collected movement before see the result of the movement in the 5003 * new direction). 5004 * 5005 * @return Returns the absolute value of the amount of movement 5006 * collected so far. 5007 */ 5008 float collect(float off, long time, String axis) { 5009 long normTime; 5010 if (off > 0) { 5011 normTime = (long)(off * FAST_MOVE_TIME); 5012 if (dir < 0) { 5013 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to positive!"); 5014 position = 0; 5015 step = 0; 5016 acceleration = 1; 5017 lastMoveTime = 0; 5018 } 5019 dir = 1; 5020 } else if (off < 0) { 5021 normTime = (long)((-off) * FAST_MOVE_TIME); 5022 if (dir > 0) { 5023 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to negative!"); 5024 position = 0; 5025 step = 0; 5026 acceleration = 1; 5027 lastMoveTime = 0; 5028 } 5029 dir = -1; 5030 } else { 5031 normTime = 0; 5032 } 5033 5034 // The number of milliseconds between each movement that is 5035 // considered "normal" and will not result in any acceleration 5036 // or deceleration, scaled by the offset we have here. 5037 if (normTime > 0) { 5038 long delta = time - lastMoveTime; 5039 lastMoveTime = time; 5040 float acc = acceleration; 5041 if (delta < normTime) { 5042 // The user is scrolling rapidly, so increase acceleration. 5043 float scale = (normTime-delta) * ACCEL_MOVE_SCALING_FACTOR; 5044 if (scale > 1) acc *= scale; 5045 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " accelerate: off=" 5046 + off + " normTime=" + normTime + " delta=" + delta 5047 + " scale=" + scale + " acc=" + acc); 5048 acceleration = acc < MAX_ACCELERATION ? acc : MAX_ACCELERATION; 5049 } else { 5050 // The user is scrolling slowly, so decrease acceleration. 5051 float scale = (delta-normTime) * ACCEL_MOVE_SCALING_FACTOR; 5052 if (scale > 1) acc /= scale; 5053 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " deccelerate: off=" 5054 + off + " normTime=" + normTime + " delta=" + delta 5055 + " scale=" + scale + " acc=" + acc); 5056 acceleration = acc > 1 ? acc : 1; 5057 } 5058 } 5059 position += off; 5060 return (absPosition = Math.abs(position)); 5061 } 5062 5063 /** 5064 * Generate the number of discrete movement events appropriate for 5065 * the currently collected trackball movement. 5066 * 5067 * @param precision The minimum movement required to generate the 5068 * first discrete movement. 5069 * 5070 * @return Returns the number of discrete movements, either positive 5071 * or negative, or 0 if there is not enough trackball movement yet 5072 * for a discrete movement. 5073 */ 5074 int generate(float precision) { 5075 int movement = 0; 5076 nonAccelMovement = 0; 5077 do { 5078 final int dir = position >= 0 ? 1 : -1; 5079 switch (step) { 5080 // If we are going to execute the first step, then we want 5081 // to do this as soon as possible instead of waiting for 5082 // a full movement, in order to make things look responsive. 5083 case 0: 5084 if (absPosition < precision) { 5085 return movement; 5086 } 5087 movement += dir; 5088 nonAccelMovement += dir; 5089 step = 1; 5090 break; 5091 // If we have generated the first movement, then we need 5092 // to wait for the second complete trackball motion before 5093 // generating the second discrete movement. 5094 case 1: 5095 if (absPosition < 2) { 5096 return movement; 5097 } 5098 movement += dir; 5099 nonAccelMovement += dir; 5100 position += dir > 0 ? -2 : 2; 5101 absPosition = Math.abs(position); 5102 step = 2; 5103 break; 5104 // After the first two, we generate discrete movements 5105 // consistently with the trackball, applying an acceleration 5106 // if the trackball is moving quickly. This is a simple 5107 // acceleration on top of what we already compute based 5108 // on how quickly the wheel is being turned, to apply 5109 // a longer increasing acceleration to continuous movement 5110 // in one direction. 5111 default: 5112 if (absPosition < 1) { 5113 return movement; 5114 } 5115 movement += dir; 5116 position += dir >= 0 ? -1 : 1; 5117 absPosition = Math.abs(position); 5118 float acc = acceleration; 5119 acc *= 1.1f; 5120 acceleration = acc < MAX_ACCELERATION ? acc : acceleration; 5121 break; 5122 } 5123 } while (true); 5124 } 5125 } 5126 5127 public static final class CalledFromWrongThreadException extends AndroidRuntimeException { 5128 public CalledFromWrongThreadException(String msg) { 5129 super(msg); 5130 } 5131 } 5132 5133 private SurfaceHolder mHolder = new SurfaceHolder() { 5134 // we only need a SurfaceHolder for opengl. it would be nice 5135 // to implement everything else though, especially the callback 5136 // support (opengl doesn't make use of it right now, but eventually 5137 // will). 5138 public Surface getSurface() { 5139 return mSurface; 5140 } 5141 5142 public boolean isCreating() { 5143 return false; 5144 } 5145 5146 public void addCallback(Callback callback) { 5147 } 5148 5149 public void removeCallback(Callback callback) { 5150 } 5151 5152 public void setFixedSize(int width, int height) { 5153 } 5154 5155 public void setSizeFromLayout() { 5156 } 5157 5158 public void setFormat(int format) { 5159 } 5160 5161 public void setType(int type) { 5162 } 5163 5164 public void setKeepScreenOn(boolean screenOn) { 5165 } 5166 5167 public Canvas lockCanvas() { 5168 return null; 5169 } 5170 5171 public Canvas lockCanvas(Rect dirty) { 5172 return null; 5173 } 5174 5175 public void unlockCanvasAndPost(Canvas canvas) { 5176 } 5177 public Rect getSurfaceFrame() { 5178 return null; 5179 } 5180 }; 5181 5182 static RunQueue getRunQueue() { 5183 RunQueue rq = sRunQueues.get(); 5184 if (rq != null) { 5185 return rq; 5186 } 5187 rq = new RunQueue(); 5188 sRunQueues.set(rq); 5189 return rq; 5190 } 5191 5192 /** 5193 * The run queue is used to enqueue pending work from Views when no Handler is 5194 * attached. The work is executed during the next call to performTraversals on 5195 * the thread. 5196 * @hide 5197 */ 5198 static final class RunQueue { 5199 private final ArrayList<HandlerAction> mActions = new ArrayList<HandlerAction>(); 5200 5201 void post(Runnable action) { 5202 postDelayed(action, 0); 5203 } 5204 5205 void postDelayed(Runnable action, long delayMillis) { 5206 HandlerAction handlerAction = new HandlerAction(); 5207 handlerAction.action = action; 5208 handlerAction.delay = delayMillis; 5209 5210 synchronized (mActions) { 5211 mActions.add(handlerAction); 5212 } 5213 } 5214 5215 void removeCallbacks(Runnable action) { 5216 final HandlerAction handlerAction = new HandlerAction(); 5217 handlerAction.action = action; 5218 5219 synchronized (mActions) { 5220 final ArrayList<HandlerAction> actions = mActions; 5221 5222 while (actions.remove(handlerAction)) { 5223 // Keep going 5224 } 5225 } 5226 } 5227 5228 void executeActions(Handler handler) { 5229 synchronized (mActions) { 5230 final ArrayList<HandlerAction> actions = mActions; 5231 final int count = actions.size(); 5232 5233 for (int i = 0; i < count; i++) { 5234 final HandlerAction handlerAction = actions.get(i); 5235 handler.postDelayed(handlerAction.action, handlerAction.delay); 5236 } 5237 5238 actions.clear(); 5239 } 5240 } 5241 5242 private static class HandlerAction { 5243 Runnable action; 5244 long delay; 5245 5246 @Override 5247 public boolean equals(Object o) { 5248 if (this == o) return true; 5249 if (o == null || getClass() != o.getClass()) return false; 5250 5251 HandlerAction that = (HandlerAction) o; 5252 return !(action != null ? !action.equals(that.action) : that.action != null); 5253 5254 } 5255 5256 @Override 5257 public int hashCode() { 5258 int result = action != null ? action.hashCode() : 0; 5259 result = 31 * result + (int) (delay ^ (delay >>> 32)); 5260 return result; 5261 } 5262 } 5263 } 5264 5265 /** 5266 * Class for managing the accessibility interaction connection 5267 * based on the global accessibility state. 5268 */ 5269 final class AccessibilityInteractionConnectionManager 5270 implements AccessibilityStateChangeListener { 5271 public void onAccessibilityStateChanged(boolean enabled) { 5272 if (enabled) { 5273 ensureConnection(); 5274 if (mAttachInfo != null && mAttachInfo.mHasWindowFocus) { 5275 mView.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 5276 View focusedView = mView.findFocus(); 5277 if (focusedView != null && focusedView != mView) { 5278 focusedView.sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_FOCUSED); 5279 } 5280 } 5281 } else { 5282 ensureNoConnection(); 5283 mHandler.obtainMessage(MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST).sendToTarget(); 5284 } 5285 } 5286 5287 public void ensureConnection() { 5288 if (mAttachInfo != null) { 5289 final boolean registered = 5290 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED; 5291 if (!registered) { 5292 mAttachInfo.mAccessibilityWindowId = 5293 mAccessibilityManager.addAccessibilityInteractionConnection(mWindow, 5294 new AccessibilityInteractionConnection(ViewRootImpl.this)); 5295 } 5296 } 5297 } 5298 5299 public void ensureNoConnection() { 5300 final boolean registered = 5301 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED; 5302 if (registered) { 5303 mAttachInfo.mAccessibilityWindowId = AccessibilityNodeInfo.UNDEFINED; 5304 mAccessibilityManager.removeAccessibilityInteractionConnection(mWindow); 5305 } 5306 } 5307 } 5308 5309 /** 5310 * This class is an interface this ViewAncestor provides to the 5311 * AccessibilityManagerService to the latter can interact with 5312 * the view hierarchy in this ViewAncestor. 5313 */ 5314 static final class AccessibilityInteractionConnection 5315 extends IAccessibilityInteractionConnection.Stub { 5316 private final WeakReference<ViewRootImpl> mViewRootImpl; 5317 5318 AccessibilityInteractionConnection(ViewRootImpl viewRootImpl) { 5319 mViewRootImpl = new WeakReference<ViewRootImpl>(viewRootImpl); 5320 } 5321 5322 @Override 5323 public void findAccessibilityNodeInfoByAccessibilityId(long accessibilityNodeId, 5324 int interactionId, IAccessibilityInteractionConnectionCallback callback, 5325 int flags, int interrogatingPid, long interrogatingTid) { 5326 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 5327 if (viewRootImpl != null && viewRootImpl.mView != null) { 5328 viewRootImpl.getAccessibilityInteractionController() 5329 .findAccessibilityNodeInfoByAccessibilityIdClientThread(accessibilityNodeId, 5330 interactionId, callback, flags, interrogatingPid, interrogatingTid); 5331 } else { 5332 // We cannot make the call and notify the caller so it does not wait. 5333 try { 5334 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 5335 } catch (RemoteException re) { 5336 /* best effort - ignore */ 5337 } 5338 } 5339 } 5340 5341 @Override 5342 public void performAccessibilityAction(long accessibilityNodeId, int action, 5343 Bundle arguments, int interactionId, 5344 IAccessibilityInteractionConnectionCallback callback, int flags, 5345 int interogatingPid, long interrogatingTid) { 5346 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 5347 if (viewRootImpl != null && viewRootImpl.mView != null) { 5348 viewRootImpl.getAccessibilityInteractionController() 5349 .performAccessibilityActionClientThread(accessibilityNodeId, action, arguments, 5350 interactionId, callback, flags, interogatingPid, interrogatingTid); 5351 } else { 5352 // We cannot make the call and notify the caller so it does not wait. 5353 try { 5354 callback.setPerformAccessibilityActionResult(false, interactionId); 5355 } catch (RemoteException re) { 5356 /* best effort - ignore */ 5357 } 5358 } 5359 } 5360 5361 @Override 5362 public void findAccessibilityNodeInfoByViewId(long accessibilityNodeId, int viewId, 5363 int interactionId, IAccessibilityInteractionConnectionCallback callback, 5364 int flags, int interrogatingPid, long interrogatingTid) { 5365 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 5366 if (viewRootImpl != null && viewRootImpl.mView != null) { 5367 viewRootImpl.getAccessibilityInteractionController() 5368 .findAccessibilityNodeInfoByViewIdClientThread(accessibilityNodeId, viewId, 5369 interactionId, callback, flags, interrogatingPid, interrogatingTid); 5370 } else { 5371 // We cannot make the call and notify the caller so it does not wait. 5372 try { 5373 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 5374 } catch (RemoteException re) { 5375 /* best effort - ignore */ 5376 } 5377 } 5378 } 5379 5380 @Override 5381 public void findAccessibilityNodeInfosByText(long accessibilityNodeId, String text, 5382 int interactionId, IAccessibilityInteractionConnectionCallback callback, 5383 int flags, int interrogatingPid, long interrogatingTid) { 5384 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 5385 if (viewRootImpl != null && viewRootImpl.mView != null) { 5386 viewRootImpl.getAccessibilityInteractionController() 5387 .findAccessibilityNodeInfosByTextClientThread(accessibilityNodeId, text, 5388 interactionId, callback, flags, interrogatingPid, interrogatingTid); 5389 } else { 5390 // We cannot make the call and notify the caller so it does not wait. 5391 try { 5392 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 5393 } catch (RemoteException re) { 5394 /* best effort - ignore */ 5395 } 5396 } 5397 } 5398 5399 @Override 5400 public void findFocus(long accessibilityNodeId, int interactionId, int focusType, 5401 IAccessibilityInteractionConnectionCallback callback, int flags, 5402 int interrogatingPid, long interrogatingTid) { 5403 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 5404 if (viewRootImpl != null && viewRootImpl.mView != null) { 5405 viewRootImpl.getAccessibilityInteractionController() 5406 .findFocusClientThread(accessibilityNodeId, interactionId, focusType, 5407 callback, flags, interrogatingPid, interrogatingTid); 5408 } else { 5409 // We cannot make the call and notify the caller so it does not wait. 5410 try { 5411 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 5412 } catch (RemoteException re) { 5413 /* best effort - ignore */ 5414 } 5415 } 5416 } 5417 5418 @Override 5419 public void focusSearch(long accessibilityNodeId, int interactionId, int direction, 5420 IAccessibilityInteractionConnectionCallback callback, int flags, 5421 int interrogatingPid, long interrogatingTid) { 5422 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 5423 if (viewRootImpl != null && viewRootImpl.mView != null) { 5424 viewRootImpl.getAccessibilityInteractionController() 5425 .focusSearchClientThread(accessibilityNodeId, interactionId, direction, 5426 callback, flags, interrogatingPid, interrogatingTid); 5427 } else { 5428 // We cannot make the call and notify the caller so it does not wait. 5429 try { 5430 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 5431 } catch (RemoteException re) { 5432 /* best effort - ignore */ 5433 } 5434 } 5435 } 5436 } 5437 5438 private class SendWindowContentChangedAccessibilityEvent implements Runnable { 5439 public View mSource; 5440 5441 public void run() { 5442 if (mSource != null) { 5443 mSource.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED); 5444 mSource.resetAccessibilityStateChanged(); 5445 mSource = null; 5446 } 5447 } 5448 } 5449} 5450