ViewRootImpl.java revision e2d7f182ff2db26723089206c7d01f6695bd3dfc
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.Log; 59import android.util.Slog; 60import android.util.TypedValue; 61import android.view.View.AttachInfo; 62import android.view.View.MeasureSpec; 63import android.view.accessibility.AccessibilityEvent; 64import android.view.accessibility.AccessibilityManager; 65import android.view.accessibility.AccessibilityManager.AccessibilityStateChangeListener; 66import android.view.accessibility.AccessibilityNodeInfo; 67import android.view.accessibility.AccessibilityNodeProvider; 68import android.view.accessibility.IAccessibilityInteractionConnection; 69import android.view.accessibility.IAccessibilityInteractionConnectionCallback; 70import android.view.animation.AccelerateDecelerateInterpolator; 71import android.view.animation.Interpolator; 72import android.view.inputmethod.InputConnection; 73import android.view.inputmethod.InputMethodManager; 74import android.widget.Scroller; 75 76import com.android.internal.R; 77import com.android.internal.policy.PolicyManager; 78import com.android.internal.view.BaseSurfaceHolder; 79import com.android.internal.view.IInputMethodCallback; 80import com.android.internal.view.IInputMethodSession; 81import com.android.internal.view.RootViewSurfaceTaker; 82 83import java.io.IOException; 84import java.io.OutputStream; 85import java.lang.ref.WeakReference; 86import java.util.ArrayList; 87import java.util.HashSet; 88 89/** 90 * The top of a view hierarchy, implementing the needed protocol between View 91 * and the WindowManager. This is for the most part an internal implementation 92 * detail of {@link WindowManagerImpl}. 93 * 94 * {@hide} 95 */ 96@SuppressWarnings({"EmptyCatchBlock", "PointlessBooleanExpression"}) 97public final class ViewRootImpl implements ViewParent, 98 View.AttachInfo.Callbacks, HardwareRenderer.HardwareDrawCallbacks { 99 private static final String TAG = "ViewRootImpl"; 100 private static final boolean DBG = false; 101 private static final boolean LOCAL_LOGV = false; 102 /** @noinspection PointlessBooleanExpression*/ 103 private static final boolean DEBUG_DRAW = false || LOCAL_LOGV; 104 private static final boolean DEBUG_LAYOUT = false || LOCAL_LOGV; 105 private static final boolean DEBUG_DIALOG = false || LOCAL_LOGV; 106 private static final boolean DEBUG_INPUT_RESIZE = false || LOCAL_LOGV; 107 private static final boolean DEBUG_ORIENTATION = false || LOCAL_LOGV; 108 private static final boolean DEBUG_TRACKBALL = false || LOCAL_LOGV; 109 private static final boolean DEBUG_IMF = false || LOCAL_LOGV; 110 private static final boolean DEBUG_CONFIGURATION = false || LOCAL_LOGV; 111 private static final boolean DEBUG_FPS = false; 112 113 private static final boolean USE_RENDER_THREAD = false; 114 115 /** 116 * Set this system property to true to force the view hierarchy to render 117 * at 60 Hz. This can be used to measure the potential framerate. 118 */ 119 private static final String PROPERTY_PROFILE_RENDERING = "viewancestor.profile_rendering"; 120 121 private static final boolean MEASURE_LATENCY = false; 122 private static LatencyTimer lt; 123 124 /** 125 * Maximum time we allow the user to roll the trackball enough to generate 126 * a key event, before resetting the counters. 127 */ 128 static final int MAX_TRACKBALL_DELAY = 250; 129 130 static IWindowSession sWindowSession; 131 132 static final Object mStaticInit = new Object(); 133 static boolean mInitialized = false; 134 135 static final ThreadLocal<RunQueue> sRunQueues = new ThreadLocal<RunQueue>(); 136 137 static final ArrayList<Runnable> sFirstDrawHandlers = new ArrayList<Runnable>(); 138 static boolean sFirstDrawComplete = false; 139 140 static final ArrayList<ComponentCallbacks> sConfigCallbacks 141 = new ArrayList<ComponentCallbacks>(); 142 143 private static boolean sUseRenderThread = false; 144 private static boolean sRenderThreadQueried = false; 145 private static final Object[] sRenderThreadQueryLock = new Object[0]; 146 147 long mLastTrackballTime = 0; 148 final TrackballAxis mTrackballAxisX = new TrackballAxis(); 149 final TrackballAxis mTrackballAxisY = new TrackballAxis(); 150 151 int mLastJoystickXDirection; 152 int mLastJoystickYDirection; 153 int mLastJoystickXKeyCode; 154 int mLastJoystickYKeyCode; 155 156 final int[] mTmpLocation = new int[2]; 157 158 final TypedValue mTmpValue = new TypedValue(); 159 160 final InputMethodCallback mInputMethodCallback; 161 final Thread mThread; 162 163 final WindowLeaked mLocation; 164 165 final WindowManager.LayoutParams mWindowAttributes = new WindowManager.LayoutParams(); 166 167 final W mWindow; 168 169 final int mTargetSdkVersion; 170 171 int mSeq; 172 173 View mView; 174 View mFocusedView; 175 View mRealFocusedView; // this is not set to null in touch mode 176 View mOldFocusedView; 177 178 View mAccessibilityFocusedHost; 179 AccessibilityNodeInfo mAccessibilityFocusedVirtualView; 180 181 int mViewVisibility; 182 boolean mAppVisible = true; 183 int mOrigWindowType = -1; 184 185 // Set to true if the owner of this window is in the stopped state, 186 // so the window should no longer be active. 187 boolean mStopped = false; 188 189 boolean mLastInCompatMode = false; 190 191 SurfaceHolder.Callback2 mSurfaceHolderCallback; 192 BaseSurfaceHolder mSurfaceHolder; 193 boolean mIsCreating; 194 boolean mDrawingAllowed; 195 196 final Region mTransparentRegion; 197 final Region mPreviousTransparentRegion; 198 199 int mWidth; 200 int mHeight; 201 Rect mDirty; 202 final Rect mCurrentDirty = new Rect(); 203 final Rect mPreviousDirty = new Rect(); 204 boolean mIsAnimating; 205 206 CompatibilityInfo.Translator mTranslator; 207 208 final View.AttachInfo mAttachInfo; 209 InputChannel mInputChannel; 210 InputQueue.Callback mInputQueueCallback; 211 InputQueue mInputQueue; 212 FallbackEventHandler mFallbackEventHandler; 213 Choreographer mChoreographer; 214 215 final Rect mTempRect; // used in the transaction to not thrash the heap. 216 final Rect mVisRect; // used to retrieve visible rect of focused view. 217 218 boolean mTraversalScheduled; 219 int mTraversalBarrier; 220 boolean mWillDrawSoon; 221 boolean mFitSystemWindowsRequested; 222 boolean mLayoutRequested; 223 boolean mFirst; 224 boolean mReportNextDraw; 225 boolean mFullRedrawNeeded; 226 boolean mNewSurfaceNeeded; 227 boolean mHasHadWindowFocus; 228 boolean mLastWasImTarget; 229 boolean mWindowsAnimating; 230 boolean mIsDrawing; 231 int mLastSystemUiVisibility; 232 233 // Pool of queued input events. 234 private static final int MAX_QUEUED_INPUT_EVENT_POOL_SIZE = 10; 235 private QueuedInputEvent mQueuedInputEventPool; 236 private int mQueuedInputEventPoolSize; 237 238 // Input event queue. 239 QueuedInputEvent mFirstPendingInputEvent; 240 QueuedInputEvent mCurrentInputEvent; 241 boolean mProcessInputEventsScheduled; 242 243 boolean mWindowAttributesChanged = false; 244 int mWindowAttributesChangesFlag = 0; 245 246 // These can be accessed by any thread, must be protected with a lock. 247 // Surface can never be reassigned or cleared (use Surface.clear()). 248 private final Surface mSurface = new Surface(); 249 250 boolean mAdded; 251 boolean mAddedTouchMode; 252 253 CompatibilityInfoHolder mCompatibilityInfo; 254 255 /*package*/ int mAddNesting; 256 257 // These are accessed by multiple threads. 258 final Rect mWinFrame; // frame given by window manager. 259 260 final Rect mPendingVisibleInsets = new Rect(); 261 final Rect mPendingContentInsets = new Rect(); 262 final ViewTreeObserver.InternalInsetsInfo mLastGivenInsets 263 = new ViewTreeObserver.InternalInsetsInfo(); 264 265 final Rect mFitSystemWindowsInsets = new Rect(); 266 267 final Configuration mLastConfiguration = new Configuration(); 268 final Configuration mPendingConfiguration = new Configuration(); 269 270 class ResizedInfo { 271 Rect contentInsets; 272 Rect visibleInsets; 273 Configuration newConfig; 274 } 275 276 boolean mScrollMayChange; 277 int mSoftInputMode; 278 View mLastScrolledFocus; 279 int mScrollY; 280 int mCurScrollY; 281 Scroller mScroller; 282 HardwareLayer mResizeBuffer; 283 long mResizeBufferStartTime; 284 int mResizeBufferDuration; 285 static final Interpolator mResizeInterpolator = new AccelerateDecelerateInterpolator(); 286 private ArrayList<LayoutTransition> mPendingTransitions; 287 288 final ViewConfiguration mViewConfiguration; 289 290 /* Drag/drop */ 291 ClipDescription mDragDescription; 292 View mCurrentDragView; 293 volatile Object mLocalDragState; 294 final PointF mDragPoint = new PointF(); 295 final PointF mLastTouchPoint = new PointF(); 296 297 private boolean mProfileRendering; 298 private Thread mRenderProfiler; 299 private volatile boolean mRenderProfilingEnabled; 300 301 // Variables to track frames per second, enabled via DEBUG_FPS flag 302 private long mFpsStartTime = -1; 303 private long mFpsPrevTime = -1; 304 private int mFpsNumFrames; 305 306 private final ArrayList<DisplayList> mDisplayLists = new ArrayList<DisplayList>(24); 307 308 /** 309 * see {@link #playSoundEffect(int)} 310 */ 311 AudioManager mAudioManager; 312 313 final AccessibilityManager mAccessibilityManager; 314 315 AccessibilityInteractionController mAccessibilityInteractionController; 316 317 AccessibilityInteractionConnectionManager mAccessibilityInteractionConnectionManager; 318 319 SendWindowContentChangedAccessibilityEvent mSendWindowContentChangedAccessibilityEvent; 320 321 HashSet<View> mTempHashSet; 322 323 private final int mDensity; 324 325 /** 326 * Consistency verifier for debugging purposes. 327 */ 328 protected final InputEventConsistencyVerifier mInputEventConsistencyVerifier = 329 InputEventConsistencyVerifier.isInstrumentationEnabled() ? 330 new InputEventConsistencyVerifier(this, 0) : null; 331 332 public static IWindowSession getWindowSession(Looper mainLooper) { 333 synchronized (mStaticInit) { 334 if (!mInitialized) { 335 try { 336 InputMethodManager imm = InputMethodManager.getInstance(mainLooper); 337 IWindowManager windowManager = Display.getWindowManager(); 338 sWindowSession = windowManager.openSession( 339 imm.getClient(), imm.getInputContext()); 340 float animatorScale = windowManager.getAnimationScale(2); 341 ValueAnimator.setDurationScale(animatorScale); 342 mInitialized = true; 343 } catch (RemoteException e) { 344 } 345 } 346 return sWindowSession; 347 } 348 } 349 350 static final class SystemUiVisibilityInfo { 351 int seq; 352 int globalVisibility; 353 int localValue; 354 int localChanges; 355 } 356 357 public ViewRootImpl(Context context) { 358 super(); 359 360 if (MEASURE_LATENCY) { 361 if (lt == null) { 362 lt = new LatencyTimer(100, 1000); 363 } 364 } 365 366 // Initialize the statics when this class is first instantiated. This is 367 // done here instead of in the static block because Zygote does not 368 // allow the spawning of threads. 369 getWindowSession(context.getMainLooper()); 370 371 mThread = Thread.currentThread(); 372 mLocation = new WindowLeaked(null); 373 mLocation.fillInStackTrace(); 374 mWidth = -1; 375 mHeight = -1; 376 mDirty = new Rect(); 377 mTempRect = new Rect(); 378 mVisRect = new Rect(); 379 mWinFrame = new Rect(); 380 mWindow = new W(this); 381 mTargetSdkVersion = context.getApplicationInfo().targetSdkVersion; 382 mInputMethodCallback = new InputMethodCallback(this); 383 mViewVisibility = View.GONE; 384 mTransparentRegion = new Region(); 385 mPreviousTransparentRegion = new Region(); 386 mFirst = true; // true for the first time the view is added 387 mAdded = false; 388 mAccessibilityManager = AccessibilityManager.getInstance(context); 389 mAccessibilityInteractionConnectionManager = 390 new AccessibilityInteractionConnectionManager(); 391 mAccessibilityManager.addAccessibilityStateChangeListener( 392 mAccessibilityInteractionConnectionManager); 393 mAttachInfo = new View.AttachInfo(sWindowSession, mWindow, this, mHandler, this); 394 mViewConfiguration = ViewConfiguration.get(context); 395 mDensity = context.getResources().getDisplayMetrics().densityDpi; 396 mFallbackEventHandler = PolicyManager.makeNewFallbackEventHandler(context); 397 mProfileRendering = Boolean.parseBoolean( 398 SystemProperties.get(PROPERTY_PROFILE_RENDERING, "false")); 399 mChoreographer = Choreographer.getInstance(); 400 401 PowerManager powerManager = (PowerManager) context.getSystemService(Context.POWER_SERVICE); 402 mAttachInfo.mScreenOn = powerManager.isScreenOn(); 403 loadSystemProperties(); 404 } 405 406 /** 407 * @return True if the application requests the use of a separate render thread, 408 * false otherwise 409 */ 410 private static boolean isRenderThreadRequested(Context context) { 411 if (USE_RENDER_THREAD) { 412 synchronized (sRenderThreadQueryLock) { 413 if (!sRenderThreadQueried) { 414 final PackageManager packageManager = context.getPackageManager(); 415 final String packageName = context.getApplicationInfo().packageName; 416 try { 417 ApplicationInfo applicationInfo = packageManager.getApplicationInfo(packageName, 418 PackageManager.GET_META_DATA); 419 if (applicationInfo.metaData != null) { 420 sUseRenderThread = applicationInfo.metaData.getBoolean( 421 "android.graphics.renderThread", false); 422 } 423 } catch (PackageManager.NameNotFoundException e) { 424 } finally { 425 sRenderThreadQueried = true; 426 } 427 } 428 return sUseRenderThread; 429 } 430 } else { 431 return false; 432 } 433 } 434 435 public static void addFirstDrawHandler(Runnable callback) { 436 synchronized (sFirstDrawHandlers) { 437 if (!sFirstDrawComplete) { 438 sFirstDrawHandlers.add(callback); 439 } 440 } 441 } 442 443 public static void addConfigCallback(ComponentCallbacks callback) { 444 synchronized (sConfigCallbacks) { 445 sConfigCallbacks.add(callback); 446 } 447 } 448 449 // FIXME for perf testing only 450 private boolean mProfile = false; 451 452 /** 453 * Call this to profile the next traversal call. 454 * FIXME for perf testing only. Remove eventually 455 */ 456 public void profile() { 457 mProfile = true; 458 } 459 460 /** 461 * Indicates whether we are in touch mode. Calling this method triggers an IPC 462 * call and should be avoided whenever possible. 463 * 464 * @return True, if the device is in touch mode, false otherwise. 465 * 466 * @hide 467 */ 468 static boolean isInTouchMode() { 469 if (mInitialized) { 470 try { 471 return sWindowSession.getInTouchMode(); 472 } catch (RemoteException e) { 473 } 474 } 475 return false; 476 } 477 478 /** 479 * We have one child 480 */ 481 public void setView(View view, WindowManager.LayoutParams attrs, View panelParentView) { 482 synchronized (this) { 483 if (mView == null) { 484 mView = view; 485 mFallbackEventHandler.setView(view); 486 mWindowAttributes.copyFrom(attrs); 487 attrs = mWindowAttributes; 488 489 setAccessibilityFocusedHost(null); 490 491 if (view instanceof RootViewSurfaceTaker) { 492 mSurfaceHolderCallback = 493 ((RootViewSurfaceTaker)view).willYouTakeTheSurface(); 494 if (mSurfaceHolderCallback != null) { 495 mSurfaceHolder = new TakenSurfaceHolder(); 496 mSurfaceHolder.setFormat(PixelFormat.UNKNOWN); 497 } 498 } 499 500 CompatibilityInfo compatibilityInfo = mCompatibilityInfo.get(); 501 mTranslator = compatibilityInfo.getTranslator(); 502 503 // If the application owns the surface, don't enable hardware acceleration 504 if (mSurfaceHolder == null) { 505 enableHardwareAcceleration(mView.getContext(), attrs); 506 } 507 508 boolean restore = false; 509 if (mTranslator != null) { 510 mSurface.setCompatibilityTranslator(mTranslator); 511 restore = true; 512 attrs.backup(); 513 mTranslator.translateWindowLayout(attrs); 514 } 515 if (DEBUG_LAYOUT) Log.d(TAG, "WindowLayout in setView:" + attrs); 516 517 if (!compatibilityInfo.supportsScreen()) { 518 attrs.flags |= WindowManager.LayoutParams.FLAG_COMPATIBLE_WINDOW; 519 mLastInCompatMode = true; 520 } 521 522 mSoftInputMode = attrs.softInputMode; 523 mWindowAttributesChanged = true; 524 mWindowAttributesChangesFlag = WindowManager.LayoutParams.EVERYTHING_CHANGED; 525 mAttachInfo.mRootView = view; 526 mAttachInfo.mScalingRequired = mTranslator != null; 527 mAttachInfo.mApplicationScale = 528 mTranslator == null ? 1.0f : mTranslator.applicationScale; 529 if (panelParentView != null) { 530 mAttachInfo.mPanelParentWindowToken 531 = panelParentView.getApplicationWindowToken(); 532 } 533 mAdded = true; 534 int res; /* = WindowManagerImpl.ADD_OKAY; */ 535 536 // Schedule the first layout -before- adding to the window 537 // manager, to make sure we do the relayout before receiving 538 // any other events from the system. 539 requestLayout(); 540 if ((mWindowAttributes.inputFeatures 541 & WindowManager.LayoutParams.INPUT_FEATURE_NO_INPUT_CHANNEL) == 0) { 542 mInputChannel = new InputChannel(); 543 } 544 try { 545 mOrigWindowType = mWindowAttributes.type; 546 mAttachInfo.mRecomputeGlobalAttributes = true; 547 collectViewAttributes(); 548 res = sWindowSession.add(mWindow, mSeq, mWindowAttributes, 549 getHostVisibility(), mAttachInfo.mContentInsets, 550 mInputChannel); 551 } catch (RemoteException e) { 552 mAdded = false; 553 mView = null; 554 mAttachInfo.mRootView = null; 555 mInputChannel = null; 556 mFallbackEventHandler.setView(null); 557 unscheduleTraversals(); 558 setAccessibilityFocusedHost(null); 559 throw new RuntimeException("Adding window failed", e); 560 } finally { 561 if (restore) { 562 attrs.restore(); 563 } 564 } 565 566 if (mTranslator != null) { 567 mTranslator.translateRectInScreenToAppWindow(mAttachInfo.mContentInsets); 568 } 569 mPendingContentInsets.set(mAttachInfo.mContentInsets); 570 mPendingVisibleInsets.set(0, 0, 0, 0); 571 if (DEBUG_LAYOUT) Log.v(TAG, "Added window " + mWindow); 572 if (res < WindowManagerImpl.ADD_OKAY) { 573 mView = null; 574 mAttachInfo.mRootView = null; 575 mAdded = false; 576 mFallbackEventHandler.setView(null); 577 unscheduleTraversals(); 578 setAccessibilityFocusedHost(null); 579 switch (res) { 580 case WindowManagerImpl.ADD_BAD_APP_TOKEN: 581 case WindowManagerImpl.ADD_BAD_SUBWINDOW_TOKEN: 582 throw new WindowManagerImpl.BadTokenException( 583 "Unable to add window -- token " + attrs.token 584 + " is not valid; is your activity running?"); 585 case WindowManagerImpl.ADD_NOT_APP_TOKEN: 586 throw new WindowManagerImpl.BadTokenException( 587 "Unable to add window -- token " + attrs.token 588 + " is not for an application"); 589 case WindowManagerImpl.ADD_APP_EXITING: 590 throw new WindowManagerImpl.BadTokenException( 591 "Unable to add window -- app for token " + attrs.token 592 + " is exiting"); 593 case WindowManagerImpl.ADD_DUPLICATE_ADD: 594 throw new WindowManagerImpl.BadTokenException( 595 "Unable to add window -- window " + mWindow 596 + " has already been added"); 597 case WindowManagerImpl.ADD_STARTING_NOT_NEEDED: 598 // Silently ignore -- we would have just removed it 599 // right away, anyway. 600 return; 601 case WindowManagerImpl.ADD_MULTIPLE_SINGLETON: 602 throw new WindowManagerImpl.BadTokenException( 603 "Unable to add window " + mWindow + 604 " -- another window of this type already exists"); 605 case WindowManagerImpl.ADD_PERMISSION_DENIED: 606 throw new WindowManagerImpl.BadTokenException( 607 "Unable to add window " + mWindow + 608 " -- permission denied for this window type"); 609 } 610 throw new RuntimeException( 611 "Unable to add window -- unknown error code " + res); 612 } 613 614 if (view instanceof RootViewSurfaceTaker) { 615 mInputQueueCallback = 616 ((RootViewSurfaceTaker)view).willYouTakeTheInputQueue(); 617 } 618 if (mInputChannel != null) { 619 if (mInputQueueCallback != null) { 620 mInputQueue = new InputQueue(mInputChannel); 621 mInputQueueCallback.onInputQueueCreated(mInputQueue); 622 } else { 623 mInputEventReceiver = new WindowInputEventReceiver(mInputChannel, 624 Looper.myLooper()); 625 } 626 } 627 628 view.assignParent(this); 629 mAddedTouchMode = (res&WindowManagerImpl.ADD_FLAG_IN_TOUCH_MODE) != 0; 630 mAppVisible = (res&WindowManagerImpl.ADD_FLAG_APP_VISIBLE) != 0; 631 632 if (mAccessibilityManager.isEnabled()) { 633 mAccessibilityInteractionConnectionManager.ensureConnection(); 634 } 635 636 if (view.getImportantForAccessibility() == View.IMPORTANT_FOR_ACCESSIBILITY_AUTO) { 637 view.setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_YES); 638 } 639 } 640 } 641 } 642 643 void destroyHardwareResources() { 644 if (mAttachInfo.mHardwareRenderer != null) { 645 if (mAttachInfo.mHardwareRenderer.isEnabled()) { 646 mAttachInfo.mHardwareRenderer.destroyLayers(mView); 647 } 648 mAttachInfo.mHardwareRenderer.destroy(false); 649 } 650 } 651 652 void terminateHardwareResources() { 653 if (mAttachInfo.mHardwareRenderer != null) { 654 mAttachInfo.mHardwareRenderer.destroyHardwareResources(mView); 655 mAttachInfo.mHardwareRenderer.destroy(false); 656 } 657 } 658 659 void destroyHardwareLayers() { 660 if (mThread != Thread.currentThread()) { 661 if (mAttachInfo.mHardwareRenderer != null && 662 mAttachInfo.mHardwareRenderer.isEnabled()) { 663 HardwareRenderer.trimMemory(ComponentCallbacks2.TRIM_MEMORY_MODERATE); 664 } 665 } else { 666 if (mAttachInfo.mHardwareRenderer != null && 667 mAttachInfo.mHardwareRenderer.isEnabled()) { 668 mAttachInfo.mHardwareRenderer.destroyLayers(mView); 669 } 670 } 671 } 672 673 public void attachFunctor(int functor) { 674 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled()) { 675 mAttachInfo.mHardwareRenderer.attachFunctor(mAttachInfo, functor); 676 } 677 } 678 679 public void detachFunctor(int functor) { 680 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled()) { 681 mAttachInfo.mHardwareRenderer.detachFunctor(functor); 682 } 683 } 684 685 private void enableHardwareAcceleration(Context context, WindowManager.LayoutParams attrs) { 686 mAttachInfo.mHardwareAccelerated = false; 687 mAttachInfo.mHardwareAccelerationRequested = false; 688 689 // Don't enable hardware acceleration when the application is in compatibility mode 690 if (mTranslator != null) return; 691 692 // Try to enable hardware acceleration if requested 693 final boolean hardwareAccelerated = 694 (attrs.flags & WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED) != 0; 695 696 if (hardwareAccelerated) { 697 if (!HardwareRenderer.isAvailable()) { 698 return; 699 } 700 701 // Persistent processes (including the system) should not do 702 // accelerated rendering on low-end devices. In that case, 703 // sRendererDisabled will be set. In addition, the system process 704 // itself should never do accelerated rendering. In that case, both 705 // sRendererDisabled and sSystemRendererDisabled are set. When 706 // sSystemRendererDisabled is set, PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED 707 // can be used by code on the system process to escape that and enable 708 // HW accelerated drawing. (This is basically for the lock screen.) 709 710 final boolean fakeHwAccelerated = (attrs.privateFlags & 711 WindowManager.LayoutParams.PRIVATE_FLAG_FAKE_HARDWARE_ACCELERATED) != 0; 712 final boolean forceHwAccelerated = (attrs.privateFlags & 713 WindowManager.LayoutParams.PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED) != 0; 714 715 if (!HardwareRenderer.sRendererDisabled || (HardwareRenderer.sSystemRendererDisabled 716 && forceHwAccelerated)) { 717 // Don't enable hardware acceleration when we're not on the main thread 718 if (!HardwareRenderer.sSystemRendererDisabled && 719 Looper.getMainLooper() != Looper.myLooper()) { 720 Log.w(HardwareRenderer.LOG_TAG, "Attempting to initialize hardware " 721 + "acceleration outside of the main thread, aborting"); 722 return; 723 } 724 725 final boolean renderThread = isRenderThreadRequested(context); 726 if (renderThread) { 727 Log.i(HardwareRenderer.LOG_TAG, "Render threat initiated"); 728 } 729 730 if (mAttachInfo.mHardwareRenderer != null) { 731 mAttachInfo.mHardwareRenderer.destroy(true); 732 } 733 734 final boolean translucent = attrs.format != PixelFormat.OPAQUE; 735 mAttachInfo.mHardwareRenderer = HardwareRenderer.createGlRenderer(2, translucent); 736 mAttachInfo.mHardwareAccelerated = mAttachInfo.mHardwareAccelerationRequested 737 = mAttachInfo.mHardwareRenderer != null; 738 739 } else if (fakeHwAccelerated) { 740 // The window had wanted to use hardware acceleration, but this 741 // is not allowed in its process. By setting this flag, it can 742 // still render as if it was accelerated. This is basically for 743 // the preview windows the window manager shows for launching 744 // applications, so they will look more like the app being launched. 745 mAttachInfo.mHardwareAccelerationRequested = true; 746 } 747 } 748 } 749 750 public View getView() { 751 return mView; 752 } 753 754 final WindowLeaked getLocation() { 755 return mLocation; 756 } 757 758 void setLayoutParams(WindowManager.LayoutParams attrs, boolean newView) { 759 synchronized (this) { 760 int oldSoftInputMode = mWindowAttributes.softInputMode; 761 // preserve compatible window flag if exists. 762 int compatibleWindowFlag = 763 mWindowAttributes.flags & WindowManager.LayoutParams.FLAG_COMPATIBLE_WINDOW; 764 // transfer over system UI visibility values as they carry current state. 765 attrs.systemUiVisibility = mWindowAttributes.systemUiVisibility; 766 attrs.subtreeSystemUiVisibility = mWindowAttributes.subtreeSystemUiVisibility; 767 mWindowAttributesChangesFlag = mWindowAttributes.copyFrom(attrs); 768 mWindowAttributes.flags |= compatibleWindowFlag; 769 770 if (newView) { 771 mSoftInputMode = attrs.softInputMode; 772 requestLayout(); 773 } 774 // Don't lose the mode we last auto-computed. 775 if ((attrs.softInputMode&WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 776 == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 777 mWindowAttributes.softInputMode = (mWindowAttributes.softInputMode 778 & ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 779 | (oldSoftInputMode 780 & WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST); 781 } 782 mWindowAttributesChanged = true; 783 scheduleTraversals(); 784 } 785 } 786 787 void handleAppVisibility(boolean visible) { 788 if (mAppVisible != visible) { 789 mAppVisible = visible; 790 scheduleTraversals(); 791 } 792 } 793 794 void handleGetNewSurface() { 795 mNewSurfaceNeeded = true; 796 mFullRedrawNeeded = true; 797 scheduleTraversals(); 798 } 799 800 void handleScreenStateChange(boolean on) { 801 if (on != mAttachInfo.mScreenOn) { 802 mAttachInfo.mScreenOn = on; 803 if (mView != null) { 804 mView.dispatchScreenStateChanged(on ? View.SCREEN_STATE_ON : View.SCREEN_STATE_OFF); 805 } 806 if (on) { 807 mFullRedrawNeeded = true; 808 scheduleTraversals(); 809 } 810 } 811 } 812 813 /** 814 * {@inheritDoc} 815 */ 816 public void requestFitSystemWindows() { 817 checkThread(); 818 mFitSystemWindowsRequested = true; 819 scheduleTraversals(); 820 } 821 822 /** 823 * {@inheritDoc} 824 */ 825 public void requestLayout() { 826 checkThread(); 827 mLayoutRequested = true; 828 scheduleTraversals(); 829 } 830 831 /** 832 * {@inheritDoc} 833 */ 834 public boolean isLayoutRequested() { 835 return mLayoutRequested; 836 } 837 838 void invalidate() { 839 mDirty.set(0, 0, mWidth, mHeight); 840 scheduleTraversals(); 841 } 842 843 void invalidateWorld(View view) { 844 view.invalidate(); 845 if (view instanceof ViewGroup) { 846 ViewGroup parent = (ViewGroup)view; 847 for (int i=0; i<parent.getChildCount(); i++) { 848 invalidateWorld(parent.getChildAt(i)); 849 } 850 } 851 } 852 853 public void invalidateChild(View child, Rect dirty) { 854 invalidateChildInParent(null, dirty); 855 } 856 857 public ViewParent invalidateChildInParent(int[] location, Rect dirty) { 858 checkThread(); 859 if (DEBUG_DRAW) Log.v(TAG, "Invalidate child: " + dirty); 860 861 if (dirty == null) { 862 invalidate(); 863 return null; 864 } 865 866 if (mCurScrollY != 0 || mTranslator != null) { 867 mTempRect.set(dirty); 868 dirty = mTempRect; 869 if (mCurScrollY != 0) { 870 dirty.offset(0, -mCurScrollY); 871 } 872 if (mTranslator != null) { 873 mTranslator.translateRectInAppWindowToScreen(dirty); 874 } 875 if (mAttachInfo.mScalingRequired) { 876 dirty.inset(-1, -1); 877 } 878 } 879 880 final Rect localDirty = mDirty; 881 if (!localDirty.isEmpty() && !localDirty.contains(dirty)) { 882 mAttachInfo.mSetIgnoreDirtyState = true; 883 mAttachInfo.mIgnoreDirtyState = true; 884 } 885 886 // Add the new dirty rect to the current one 887 localDirty.union(dirty.left, dirty.top, dirty.right, dirty.bottom); 888 // Intersect with the bounds of the window to skip 889 // updates that lie outside of the visible region 890 final float appScale = mAttachInfo.mApplicationScale; 891 localDirty.intersect(0, 0, 892 (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 893 894 if (!mWillDrawSoon) { 895 scheduleTraversals(); 896 } 897 898 return null; 899 } 900 901 void setStopped(boolean stopped) { 902 if (mStopped != stopped) { 903 mStopped = stopped; 904 if (!stopped) { 905 scheduleTraversals(); 906 } 907 } 908 } 909 910 public ViewParent getParent() { 911 return null; 912 } 913 914 public boolean getChildVisibleRect(View child, Rect r, android.graphics.Point offset) { 915 if (child != mView) { 916 throw new RuntimeException("child is not mine, honest!"); 917 } 918 // Note: don't apply scroll offset, because we want to know its 919 // visibility in the virtual canvas being given to the view hierarchy. 920 return r.intersect(0, 0, mWidth, mHeight); 921 } 922 923 public void bringChildToFront(View child) { 924 } 925 926 int getHostVisibility() { 927 return mAppVisible ? mView.getVisibility() : View.GONE; 928 } 929 930 void disposeResizeBuffer() { 931 if (mResizeBuffer != null) { 932 mResizeBuffer.destroy(); 933 mResizeBuffer = null; 934 } 935 } 936 937 /** 938 * Add LayoutTransition to the list of transitions to be started in the next traversal. 939 * This list will be cleared after the transitions on the list are start()'ed. These 940 * transitionsa re added by LayoutTransition itself when it sets up animations. The setup 941 * happens during the layout phase of traversal, which we want to complete before any of the 942 * animations are started (because those animations may side-effect properties that layout 943 * depends upon, like the bounding rectangles of the affected views). So we add the transition 944 * to the list and it is started just prior to starting the drawing phase of traversal. 945 * 946 * @param transition The LayoutTransition to be started on the next traversal. 947 * 948 * @hide 949 */ 950 public void requestTransitionStart(LayoutTransition transition) { 951 if (mPendingTransitions == null || !mPendingTransitions.contains(transition)) { 952 if (mPendingTransitions == null) { 953 mPendingTransitions = new ArrayList<LayoutTransition>(); 954 } 955 mPendingTransitions.add(transition); 956 } 957 } 958 959 void scheduleTraversals() { 960 if (!mTraversalScheduled) { 961 mTraversalScheduled = true; 962 mTraversalBarrier = mHandler.getLooper().postSyncBarrier(); 963 mChoreographer.postCallback( 964 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 965 scheduleConsumeBatchedInput(); 966 } 967 } 968 969 void unscheduleTraversals() { 970 if (mTraversalScheduled) { 971 mTraversalScheduled = false; 972 mHandler.getLooper().removeSyncBarrier(mTraversalBarrier); 973 mChoreographer.removeCallbacks( 974 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 975 } 976 } 977 978 void doTraversal() { 979 if (mTraversalScheduled) { 980 mTraversalScheduled = false; 981 mHandler.getLooper().removeSyncBarrier(mTraversalBarrier); 982 983 if (mProfile) { 984 Debug.startMethodTracing("ViewAncestor"); 985 } 986 987 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "performTraversals"); 988 try { 989 performTraversals(); 990 } finally { 991 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 992 } 993 994 if (mProfile) { 995 Debug.stopMethodTracing(); 996 mProfile = false; 997 } 998 } 999 } 1000 1001 private boolean collectViewAttributes() { 1002 final View.AttachInfo attachInfo = mAttachInfo; 1003 if (attachInfo.mRecomputeGlobalAttributes) { 1004 //Log.i(TAG, "Computing view hierarchy attributes!"); 1005 attachInfo.mRecomputeGlobalAttributes = false; 1006 boolean oldScreenOn = attachInfo.mKeepScreenOn; 1007 int oldVis = attachInfo.mSystemUiVisibility; 1008 boolean oldHasSystemUiListeners = attachInfo.mHasSystemUiListeners; 1009 attachInfo.mKeepScreenOn = false; 1010 attachInfo.mSystemUiVisibility = 0; 1011 attachInfo.mHasSystemUiListeners = false; 1012 mView.dispatchCollectViewAttributes(attachInfo, 0); 1013 attachInfo.mSystemUiVisibility &= ~attachInfo.mDisabledSystemUiVisibility; 1014 if (attachInfo.mKeepScreenOn != oldScreenOn 1015 || attachInfo.mSystemUiVisibility != oldVis 1016 || attachInfo.mHasSystemUiListeners != oldHasSystemUiListeners) { 1017 WindowManager.LayoutParams params = mWindowAttributes; 1018 if (attachInfo.mKeepScreenOn) { 1019 params.flags |= WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON; 1020 } 1021 params.subtreeSystemUiVisibility = attachInfo.mSystemUiVisibility; 1022 params.hasSystemUiListeners = attachInfo.mHasSystemUiListeners; 1023 mView.dispatchWindowSystemUiVisiblityChanged(attachInfo.mSystemUiVisibility); 1024 return true; 1025 } 1026 } 1027 return false; 1028 } 1029 1030 private boolean measureHierarchy(final View host, final WindowManager.LayoutParams lp, 1031 final Resources res, final int desiredWindowWidth, final int desiredWindowHeight) { 1032 int childWidthMeasureSpec; 1033 int childHeightMeasureSpec; 1034 boolean windowSizeMayChange = false; 1035 1036 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) Log.v(TAG, 1037 "Measuring " + host + " in display " + desiredWindowWidth 1038 + "x" + desiredWindowHeight + "..."); 1039 1040 boolean goodMeasure = false; 1041 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT) { 1042 // On large screens, we don't want to allow dialogs to just 1043 // stretch to fill the entire width of the screen to display 1044 // one line of text. First try doing the layout at a smaller 1045 // size to see if it will fit. 1046 final DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1047 res.getValue(com.android.internal.R.dimen.config_prefDialogWidth, mTmpValue, true); 1048 int baseSize = 0; 1049 if (mTmpValue.type == TypedValue.TYPE_DIMENSION) { 1050 baseSize = (int)mTmpValue.getDimension(packageMetrics); 1051 } 1052 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": baseSize=" + baseSize); 1053 if (baseSize != 0 && desiredWindowWidth > baseSize) { 1054 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1055 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1056 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1057 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": measured (" 1058 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1059 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1060 goodMeasure = true; 1061 } else { 1062 // Didn't fit in that size... try expanding a bit. 1063 baseSize = (baseSize+desiredWindowWidth)/2; 1064 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": next baseSize=" 1065 + baseSize); 1066 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1067 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1068 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": measured (" 1069 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1070 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1071 if (DEBUG_DIALOG) Log.v(TAG, "Good!"); 1072 goodMeasure = true; 1073 } 1074 } 1075 } 1076 } 1077 1078 if (!goodMeasure) { 1079 childWidthMeasureSpec = getRootMeasureSpec(desiredWindowWidth, lp.width); 1080 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1081 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1082 if (mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) { 1083 windowSizeMayChange = true; 1084 } 1085 } 1086 1087 if (DBG) { 1088 System.out.println("======================================"); 1089 System.out.println("performTraversals -- after measure"); 1090 host.debug(); 1091 } 1092 1093 return windowSizeMayChange; 1094 } 1095 1096 private void performTraversals() { 1097 // cache mView since it is used so much below... 1098 final View host = mView; 1099 1100 if (DBG) { 1101 System.out.println("======================================"); 1102 System.out.println("performTraversals"); 1103 host.debug(); 1104 } 1105 1106 if (host == null || !mAdded) 1107 return; 1108 1109 mWillDrawSoon = true; 1110 boolean windowSizeMayChange = false; 1111 boolean newSurface = false; 1112 boolean surfaceChanged = false; 1113 WindowManager.LayoutParams lp = mWindowAttributes; 1114 1115 int desiredWindowWidth; 1116 int desiredWindowHeight; 1117 1118 final View.AttachInfo attachInfo = mAttachInfo; 1119 1120 final int viewVisibility = getHostVisibility(); 1121 boolean viewVisibilityChanged = mViewVisibility != viewVisibility 1122 || mNewSurfaceNeeded; 1123 1124 WindowManager.LayoutParams params = null; 1125 if (mWindowAttributesChanged) { 1126 mWindowAttributesChanged = false; 1127 surfaceChanged = true; 1128 params = lp; 1129 } 1130 CompatibilityInfo compatibilityInfo = mCompatibilityInfo.get(); 1131 if (compatibilityInfo.supportsScreen() == mLastInCompatMode) { 1132 params = lp; 1133 mFullRedrawNeeded = true; 1134 mLayoutRequested = true; 1135 if (mLastInCompatMode) { 1136 params.flags &= ~WindowManager.LayoutParams.FLAG_COMPATIBLE_WINDOW; 1137 mLastInCompatMode = false; 1138 } else { 1139 params.flags |= WindowManager.LayoutParams.FLAG_COMPATIBLE_WINDOW; 1140 mLastInCompatMode = true; 1141 } 1142 } 1143 1144 mWindowAttributesChangesFlag = 0; 1145 1146 Rect frame = mWinFrame; 1147 if (mFirst) { 1148 mFullRedrawNeeded = true; 1149 mLayoutRequested = true; 1150 1151 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL) { 1152 // NOTE -- system code, won't try to do compat mode. 1153 Display disp = WindowManagerImpl.getDefault().getDefaultDisplay(); 1154 Point size = new Point(); 1155 disp.getRealSize(size); 1156 desiredWindowWidth = size.x; 1157 desiredWindowHeight = size.y; 1158 } else { 1159 DisplayMetrics packageMetrics = 1160 mView.getContext().getResources().getDisplayMetrics(); 1161 desiredWindowWidth = packageMetrics.widthPixels; 1162 desiredWindowHeight = packageMetrics.heightPixels; 1163 } 1164 1165 // For the very first time, tell the view hierarchy that it 1166 // is attached to the window. Note that at this point the surface 1167 // object is not initialized to its backing store, but soon it 1168 // will be (assuming the window is visible). 1169 attachInfo.mSurface = mSurface; 1170 // We used to use the following condition to choose 32 bits drawing caches: 1171 // PixelFormat.hasAlpha(lp.format) || lp.format == PixelFormat.RGBX_8888 1172 // However, windows are now always 32 bits by default, so choose 32 bits 1173 attachInfo.mUse32BitDrawingCache = true; 1174 attachInfo.mHasWindowFocus = false; 1175 attachInfo.mWindowVisibility = viewVisibility; 1176 attachInfo.mRecomputeGlobalAttributes = false; 1177 viewVisibilityChanged = false; 1178 mLastConfiguration.setTo(host.getResources().getConfiguration()); 1179 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1180 host.dispatchAttachedToWindow(attachInfo, 0); 1181 mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets); 1182 host.fitSystemWindows(mFitSystemWindowsInsets); 1183 //Log.i(TAG, "Screen on initialized: " + attachInfo.mKeepScreenOn); 1184 1185 } else { 1186 desiredWindowWidth = frame.width(); 1187 desiredWindowHeight = frame.height(); 1188 if (desiredWindowWidth != mWidth || desiredWindowHeight != mHeight) { 1189 if (DEBUG_ORIENTATION) Log.v(TAG, 1190 "View " + host + " resized to: " + frame); 1191 mFullRedrawNeeded = true; 1192 mLayoutRequested = true; 1193 windowSizeMayChange = true; 1194 } 1195 } 1196 1197 if (viewVisibilityChanged) { 1198 attachInfo.mWindowVisibility = viewVisibility; 1199 host.dispatchWindowVisibilityChanged(viewVisibility); 1200 if (viewVisibility != View.VISIBLE || mNewSurfaceNeeded) { 1201 destroyHardwareResources(); 1202 } 1203 if (viewVisibility == View.GONE) { 1204 // After making a window gone, we will count it as being 1205 // shown for the first time the next time it gets focus. 1206 mHasHadWindowFocus = false; 1207 } 1208 } 1209 1210 // Execute enqueued actions on every traversal in case a detached view enqueued an action 1211 getRunQueue().executeActions(attachInfo.mHandler); 1212 1213 boolean insetsChanged = false; 1214 1215 boolean layoutRequested = mLayoutRequested && !mStopped; 1216 if (layoutRequested) { 1217 1218 final Resources res = mView.getContext().getResources(); 1219 1220 if (mFirst) { 1221 // make sure touch mode code executes by setting cached value 1222 // to opposite of the added touch mode. 1223 mAttachInfo.mInTouchMode = !mAddedTouchMode; 1224 ensureTouchModeLocally(mAddedTouchMode); 1225 } else { 1226 if (!mPendingContentInsets.equals(mAttachInfo.mContentInsets)) { 1227 insetsChanged = true; 1228 } 1229 if (!mPendingVisibleInsets.equals(mAttachInfo.mVisibleInsets)) { 1230 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1231 if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: " 1232 + mAttachInfo.mVisibleInsets); 1233 } 1234 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT 1235 || lp.height == ViewGroup.LayoutParams.WRAP_CONTENT) { 1236 windowSizeMayChange = true; 1237 1238 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL) { 1239 // NOTE -- system code, won't try to do compat mode. 1240 Display disp = WindowManagerImpl.getDefault().getDefaultDisplay(); 1241 Point size = new Point(); 1242 disp.getRealSize(size); 1243 desiredWindowWidth = size.x; 1244 desiredWindowHeight = size.y; 1245 } else { 1246 DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1247 desiredWindowWidth = packageMetrics.widthPixels; 1248 desiredWindowHeight = packageMetrics.heightPixels; 1249 } 1250 } 1251 } 1252 1253 // Ask host how big it wants to be 1254 windowSizeMayChange |= measureHierarchy(host, lp, res, 1255 desiredWindowWidth, desiredWindowHeight); 1256 } 1257 1258 if (collectViewAttributes()) { 1259 params = lp; 1260 } 1261 if (attachInfo.mForceReportNewAttributes) { 1262 attachInfo.mForceReportNewAttributes = false; 1263 params = lp; 1264 } 1265 1266 if (mFirst || attachInfo.mViewVisibilityChanged) { 1267 attachInfo.mViewVisibilityChanged = false; 1268 int resizeMode = mSoftInputMode & 1269 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST; 1270 // If we are in auto resize mode, then we need to determine 1271 // what mode to use now. 1272 if (resizeMode == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 1273 final int N = attachInfo.mScrollContainers.size(); 1274 for (int i=0; i<N; i++) { 1275 if (attachInfo.mScrollContainers.get(i).isShown()) { 1276 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE; 1277 } 1278 } 1279 if (resizeMode == 0) { 1280 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_PAN; 1281 } 1282 if ((lp.softInputMode & 1283 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) != resizeMode) { 1284 lp.softInputMode = (lp.softInputMode & 1285 ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) | 1286 resizeMode; 1287 params = lp; 1288 } 1289 } 1290 } 1291 1292 if (params != null && (host.mPrivateFlags & View.REQUEST_TRANSPARENT_REGIONS) != 0) { 1293 if (!PixelFormat.formatHasAlpha(params.format)) { 1294 params.format = PixelFormat.TRANSLUCENT; 1295 } 1296 } 1297 1298 if (mFitSystemWindowsRequested) { 1299 mFitSystemWindowsRequested = false; 1300 mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets); 1301 host.fitSystemWindows(mFitSystemWindowsInsets); 1302 if (mLayoutRequested) { 1303 // Short-circuit catching a new layout request here, so 1304 // we don't need to go through two layout passes when things 1305 // change due to fitting system windows, which can happen a lot. 1306 windowSizeMayChange |= measureHierarchy(host, lp, 1307 mView.getContext().getResources(), 1308 desiredWindowWidth, desiredWindowHeight); 1309 } 1310 } 1311 1312 if (layoutRequested) { 1313 // Clear this now, so that if anything requests a layout in the 1314 // rest of this function we will catch it and re-run a full 1315 // layout pass. 1316 mLayoutRequested = false; 1317 } 1318 1319 boolean windowShouldResize = layoutRequested && windowSizeMayChange 1320 && ((mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) 1321 || (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT && 1322 frame.width() < desiredWindowWidth && frame.width() != mWidth) 1323 || (lp.height == ViewGroup.LayoutParams.WRAP_CONTENT && 1324 frame.height() < desiredWindowHeight && frame.height() != mHeight)); 1325 1326 final boolean computesInternalInsets = 1327 attachInfo.mTreeObserver.hasComputeInternalInsetsListeners(); 1328 1329 boolean insetsPending = false; 1330 int relayoutResult = 0; 1331 1332 if (mFirst || windowShouldResize || insetsChanged || 1333 viewVisibilityChanged || params != null) { 1334 1335 if (viewVisibility == View.VISIBLE) { 1336 // If this window is giving internal insets to the window 1337 // manager, and it is being added or changing its visibility, 1338 // then we want to first give the window manager "fake" 1339 // insets to cause it to effectively ignore the content of 1340 // the window during layout. This avoids it briefly causing 1341 // other windows to resize/move based on the raw frame of the 1342 // window, waiting until we can finish laying out this window 1343 // and get back to the window manager with the ultimately 1344 // computed insets. 1345 insetsPending = computesInternalInsets && (mFirst || viewVisibilityChanged); 1346 } 1347 1348 if (mSurfaceHolder != null) { 1349 mSurfaceHolder.mSurfaceLock.lock(); 1350 mDrawingAllowed = true; 1351 } 1352 1353 boolean hwInitialized = false; 1354 boolean contentInsetsChanged = false; 1355 boolean visibleInsetsChanged; 1356 boolean hadSurface = mSurface.isValid(); 1357 1358 try { 1359 if (DEBUG_LAYOUT) { 1360 Log.i(TAG, "host=w:" + host.getMeasuredWidth() + ", h:" + 1361 host.getMeasuredHeight() + ", params=" + params); 1362 } 1363 1364 final int surfaceGenerationId = mSurface.getGenerationId(); 1365 relayoutResult = relayoutWindow(params, viewVisibility, insetsPending); 1366 1367 if (DEBUG_LAYOUT) Log.v(TAG, "relayout: frame=" + frame.toShortString() 1368 + " content=" + mPendingContentInsets.toShortString() 1369 + " visible=" + mPendingVisibleInsets.toShortString() 1370 + " surface=" + mSurface); 1371 1372 if (mPendingConfiguration.seq != 0) { 1373 if (DEBUG_CONFIGURATION) Log.v(TAG, "Visible with new config: " 1374 + mPendingConfiguration); 1375 updateConfiguration(mPendingConfiguration, !mFirst); 1376 mPendingConfiguration.seq = 0; 1377 } 1378 1379 contentInsetsChanged = !mPendingContentInsets.equals( 1380 mAttachInfo.mContentInsets); 1381 visibleInsetsChanged = !mPendingVisibleInsets.equals( 1382 mAttachInfo.mVisibleInsets); 1383 if (contentInsetsChanged) { 1384 if (mWidth > 0 && mHeight > 0 && lp != null && 1385 ((lp.systemUiVisibility|lp.subtreeSystemUiVisibility) 1386 & View.SYSTEM_UI_LAYOUT_FLAGS) == 0 && 1387 mSurface != null && mSurface.isValid() && 1388 !mAttachInfo.mTurnOffWindowResizeAnim && 1389 mAttachInfo.mHardwareRenderer != null && 1390 mAttachInfo.mHardwareRenderer.isEnabled() && 1391 mAttachInfo.mHardwareRenderer.validate() && 1392 lp != null && !PixelFormat.formatHasAlpha(lp.format)) { 1393 1394 disposeResizeBuffer(); 1395 1396 boolean completed = false; 1397 HardwareCanvas hwRendererCanvas = mAttachInfo.mHardwareRenderer.getCanvas(); 1398 HardwareCanvas layerCanvas = null; 1399 try { 1400 if (mResizeBuffer == null) { 1401 mResizeBuffer = mAttachInfo.mHardwareRenderer.createHardwareLayer( 1402 mWidth, mHeight, false); 1403 } else if (mResizeBuffer.getWidth() != mWidth || 1404 mResizeBuffer.getHeight() != mHeight) { 1405 mResizeBuffer.resize(mWidth, mHeight); 1406 } 1407 layerCanvas = mResizeBuffer.start(hwRendererCanvas); 1408 layerCanvas.setViewport(mWidth, mHeight); 1409 layerCanvas.onPreDraw(null); 1410 final int restoreCount = layerCanvas.save(); 1411 1412 layerCanvas.drawColor(0xff000000, PorterDuff.Mode.SRC); 1413 1414 int yoff; 1415 final boolean scrolling = mScroller != null 1416 && mScroller.computeScrollOffset(); 1417 if (scrolling) { 1418 yoff = mScroller.getCurrY(); 1419 mScroller.abortAnimation(); 1420 } else { 1421 yoff = mScrollY; 1422 } 1423 1424 layerCanvas.translate(0, -yoff); 1425 if (mTranslator != null) { 1426 mTranslator.translateCanvas(layerCanvas); 1427 } 1428 1429 mView.draw(layerCanvas); 1430 1431 drawAccessibilityFocusedDrawableIfNeeded(layerCanvas); 1432 1433 mResizeBufferStartTime = SystemClock.uptimeMillis(); 1434 mResizeBufferDuration = mView.getResources().getInteger( 1435 com.android.internal.R.integer.config_mediumAnimTime); 1436 completed = true; 1437 1438 layerCanvas.restoreToCount(restoreCount); 1439 } catch (OutOfMemoryError e) { 1440 Log.w(TAG, "Not enough memory for content change anim buffer", e); 1441 } finally { 1442 if (layerCanvas != null) { 1443 layerCanvas.onPostDraw(); 1444 } 1445 if (mResizeBuffer != null) { 1446 mResizeBuffer.end(hwRendererCanvas); 1447 if (!completed) { 1448 mResizeBuffer.destroy(); 1449 mResizeBuffer = null; 1450 } 1451 } 1452 } 1453 } 1454 mAttachInfo.mContentInsets.set(mPendingContentInsets); 1455 if (DEBUG_LAYOUT) Log.v(TAG, "Content insets changing to: " 1456 + mAttachInfo.mContentInsets); 1457 } 1458 if (contentInsetsChanged || mLastSystemUiVisibility != 1459 mAttachInfo.mSystemUiVisibility || mFitSystemWindowsRequested) { 1460 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1461 mFitSystemWindowsRequested = false; 1462 mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets); 1463 host.fitSystemWindows(mFitSystemWindowsInsets); 1464 } 1465 if (visibleInsetsChanged) { 1466 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1467 if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: " 1468 + mAttachInfo.mVisibleInsets); 1469 } 1470 1471 if (!hadSurface) { 1472 if (mSurface.isValid()) { 1473 // If we are creating a new surface, then we need to 1474 // completely redraw it. Also, when we get to the 1475 // point of drawing it we will hold off and schedule 1476 // a new traversal instead. This is so we can tell the 1477 // window manager about all of the windows being displayed 1478 // before actually drawing them, so it can display then 1479 // all at once. 1480 newSurface = true; 1481 mFullRedrawNeeded = true; 1482 mPreviousTransparentRegion.setEmpty(); 1483 1484 if (mAttachInfo.mHardwareRenderer != null) { 1485 try { 1486 hwInitialized = mAttachInfo.mHardwareRenderer.initialize(mHolder); 1487 } catch (Surface.OutOfResourcesException e) { 1488 Log.e(TAG, "OutOfResourcesException initializing HW surface", e); 1489 try { 1490 if (!sWindowSession.outOfMemory(mWindow)) { 1491 Slog.w(TAG, "No processes killed for memory; killing self"); 1492 Process.killProcess(Process.myPid()); 1493 } 1494 } catch (RemoteException ex) { 1495 } 1496 mLayoutRequested = true; // ask wm for a new surface next time. 1497 return; 1498 } 1499 } 1500 } 1501 } else if (!mSurface.isValid()) { 1502 // If the surface has been removed, then reset the scroll 1503 // positions. 1504 mLastScrolledFocus = null; 1505 mScrollY = mCurScrollY = 0; 1506 if (mScroller != null) { 1507 mScroller.abortAnimation(); 1508 } 1509 disposeResizeBuffer(); 1510 // Our surface is gone 1511 if (mAttachInfo.mHardwareRenderer != null && 1512 mAttachInfo.mHardwareRenderer.isEnabled()) { 1513 mAttachInfo.mHardwareRenderer.destroy(true); 1514 } 1515 } else if (surfaceGenerationId != mSurface.getGenerationId() && 1516 mSurfaceHolder == null && mAttachInfo.mHardwareRenderer != null) { 1517 mFullRedrawNeeded = true; 1518 try { 1519 mAttachInfo.mHardwareRenderer.updateSurface(mHolder); 1520 } catch (Surface.OutOfResourcesException e) { 1521 Log.e(TAG, "OutOfResourcesException updating HW surface", e); 1522 try { 1523 if (!sWindowSession.outOfMemory(mWindow)) { 1524 Slog.w(TAG, "No processes killed for memory; killing self"); 1525 Process.killProcess(Process.myPid()); 1526 } 1527 } catch (RemoteException ex) { 1528 } 1529 mLayoutRequested = true; // ask wm for a new surface next time. 1530 return; 1531 } 1532 } 1533 } catch (RemoteException e) { 1534 } 1535 1536 if (DEBUG_ORIENTATION) Log.v( 1537 TAG, "Relayout returned: frame=" + frame + ", surface=" + mSurface); 1538 1539 attachInfo.mWindowLeft = frame.left; 1540 attachInfo.mWindowTop = frame.top; 1541 1542 // !!FIXME!! This next section handles the case where we did not get the 1543 // window size we asked for. We should avoid this by getting a maximum size from 1544 // the window session beforehand. 1545 if (mWidth != frame.width() || mHeight != frame.height()) { 1546 mWidth = frame.width(); 1547 mHeight = frame.height(); 1548 } 1549 1550 if (mSurfaceHolder != null) { 1551 // The app owns the surface; tell it about what is going on. 1552 if (mSurface.isValid()) { 1553 // XXX .copyFrom() doesn't work! 1554 //mSurfaceHolder.mSurface.copyFrom(mSurface); 1555 mSurfaceHolder.mSurface = mSurface; 1556 } 1557 mSurfaceHolder.setSurfaceFrameSize(mWidth, mHeight); 1558 mSurfaceHolder.mSurfaceLock.unlock(); 1559 if (mSurface.isValid()) { 1560 if (!hadSurface) { 1561 mSurfaceHolder.ungetCallbacks(); 1562 1563 mIsCreating = true; 1564 mSurfaceHolderCallback.surfaceCreated(mSurfaceHolder); 1565 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1566 if (callbacks != null) { 1567 for (SurfaceHolder.Callback c : callbacks) { 1568 c.surfaceCreated(mSurfaceHolder); 1569 } 1570 } 1571 surfaceChanged = true; 1572 } 1573 if (surfaceChanged) { 1574 mSurfaceHolderCallback.surfaceChanged(mSurfaceHolder, 1575 lp.format, mWidth, mHeight); 1576 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1577 if (callbacks != null) { 1578 for (SurfaceHolder.Callback c : callbacks) { 1579 c.surfaceChanged(mSurfaceHolder, lp.format, 1580 mWidth, mHeight); 1581 } 1582 } 1583 } 1584 mIsCreating = false; 1585 } else if (hadSurface) { 1586 mSurfaceHolder.ungetCallbacks(); 1587 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1588 mSurfaceHolderCallback.surfaceDestroyed(mSurfaceHolder); 1589 if (callbacks != null) { 1590 for (SurfaceHolder.Callback c : callbacks) { 1591 c.surfaceDestroyed(mSurfaceHolder); 1592 } 1593 } 1594 mSurfaceHolder.mSurfaceLock.lock(); 1595 try { 1596 mSurfaceHolder.mSurface = new Surface(); 1597 } finally { 1598 mSurfaceHolder.mSurfaceLock.unlock(); 1599 } 1600 } 1601 } 1602 1603 if (mAttachInfo.mHardwareRenderer != null && 1604 mAttachInfo.mHardwareRenderer.isEnabled()) { 1605 if (hwInitialized || windowShouldResize || 1606 mWidth != mAttachInfo.mHardwareRenderer.getWidth() || 1607 mHeight != mAttachInfo.mHardwareRenderer.getHeight()) { 1608 mAttachInfo.mHardwareRenderer.setup(mWidth, mHeight); 1609 if (!hwInitialized) { 1610 mAttachInfo.mHardwareRenderer.invalidate(mHolder); 1611 } 1612 } 1613 } 1614 1615 if (!mStopped) { 1616 boolean focusChangedDueToTouchMode = ensureTouchModeLocally( 1617 (relayoutResult&WindowManagerImpl.RELAYOUT_RES_IN_TOUCH_MODE) != 0); 1618 if (focusChangedDueToTouchMode || mWidth != host.getMeasuredWidth() 1619 || mHeight != host.getMeasuredHeight() || contentInsetsChanged) { 1620 int childWidthMeasureSpec = getRootMeasureSpec(mWidth, lp.width); 1621 int childHeightMeasureSpec = getRootMeasureSpec(mHeight, lp.height); 1622 1623 if (DEBUG_LAYOUT) Log.v(TAG, "Ooops, something changed! mWidth=" 1624 + mWidth + " measuredWidth=" + host.getMeasuredWidth() 1625 + " mHeight=" + mHeight 1626 + " measuredHeight=" + host.getMeasuredHeight() 1627 + " coveredInsetsChanged=" + contentInsetsChanged); 1628 1629 // Ask host how big it wants to be 1630 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1631 1632 // Implementation of weights from WindowManager.LayoutParams 1633 // We just grow the dimensions as needed and re-measure if 1634 // needs be 1635 int width = host.getMeasuredWidth(); 1636 int height = host.getMeasuredHeight(); 1637 boolean measureAgain = false; 1638 1639 if (lp.horizontalWeight > 0.0f) { 1640 width += (int) ((mWidth - width) * lp.horizontalWeight); 1641 childWidthMeasureSpec = MeasureSpec.makeMeasureSpec(width, 1642 MeasureSpec.EXACTLY); 1643 measureAgain = true; 1644 } 1645 if (lp.verticalWeight > 0.0f) { 1646 height += (int) ((mHeight - height) * lp.verticalWeight); 1647 childHeightMeasureSpec = MeasureSpec.makeMeasureSpec(height, 1648 MeasureSpec.EXACTLY); 1649 measureAgain = true; 1650 } 1651 1652 if (measureAgain) { 1653 if (DEBUG_LAYOUT) Log.v(TAG, 1654 "And hey let's measure once more: width=" + width 1655 + " height=" + height); 1656 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1657 } 1658 1659 layoutRequested = true; 1660 } 1661 } 1662 } 1663 1664 final boolean didLayout = layoutRequested && !mStopped; 1665 boolean triggerGlobalLayoutListener = didLayout 1666 || attachInfo.mRecomputeGlobalAttributes; 1667 if (didLayout) { 1668 performLayout(); 1669 1670 // By this point all views have been sized and positionned 1671 // We can compute the transparent area 1672 1673 if ((host.mPrivateFlags & View.REQUEST_TRANSPARENT_REGIONS) != 0) { 1674 // start out transparent 1675 // TODO: AVOID THAT CALL BY CACHING THE RESULT? 1676 host.getLocationInWindow(mTmpLocation); 1677 mTransparentRegion.set(mTmpLocation[0], mTmpLocation[1], 1678 mTmpLocation[0] + host.mRight - host.mLeft, 1679 mTmpLocation[1] + host.mBottom - host.mTop); 1680 1681 host.gatherTransparentRegion(mTransparentRegion); 1682 if (mTranslator != null) { 1683 mTranslator.translateRegionInWindowToScreen(mTransparentRegion); 1684 } 1685 1686 if (!mTransparentRegion.equals(mPreviousTransparentRegion)) { 1687 mPreviousTransparentRegion.set(mTransparentRegion); 1688 // reconfigure window manager 1689 try { 1690 sWindowSession.setTransparentRegion(mWindow, mTransparentRegion); 1691 } catch (RemoteException e) { 1692 } 1693 } 1694 } 1695 1696 if (DBG) { 1697 System.out.println("======================================"); 1698 System.out.println("performTraversals -- after setFrame"); 1699 host.debug(); 1700 } 1701 } 1702 1703 if (triggerGlobalLayoutListener) { 1704 attachInfo.mRecomputeGlobalAttributes = false; 1705 attachInfo.mTreeObserver.dispatchOnGlobalLayout(); 1706 1707 if (AccessibilityManager.getInstance(host.mContext).isEnabled()) { 1708 postSendWindowContentChangedCallback(mView); 1709 } 1710 } 1711 1712 if (computesInternalInsets) { 1713 // Clear the original insets. 1714 final ViewTreeObserver.InternalInsetsInfo insets = attachInfo.mGivenInternalInsets; 1715 insets.reset(); 1716 1717 // Compute new insets in place. 1718 attachInfo.mTreeObserver.dispatchOnComputeInternalInsets(insets); 1719 1720 // Tell the window manager. 1721 if (insetsPending || !mLastGivenInsets.equals(insets)) { 1722 mLastGivenInsets.set(insets); 1723 1724 // Translate insets to screen coordinates if needed. 1725 final Rect contentInsets; 1726 final Rect visibleInsets; 1727 final Region touchableRegion; 1728 if (mTranslator != null) { 1729 contentInsets = mTranslator.getTranslatedContentInsets(insets.contentInsets); 1730 visibleInsets = mTranslator.getTranslatedVisibleInsets(insets.visibleInsets); 1731 touchableRegion = mTranslator.getTranslatedTouchableArea(insets.touchableRegion); 1732 } else { 1733 contentInsets = insets.contentInsets; 1734 visibleInsets = insets.visibleInsets; 1735 touchableRegion = insets.touchableRegion; 1736 } 1737 1738 try { 1739 sWindowSession.setInsets(mWindow, insets.mTouchableInsets, 1740 contentInsets, visibleInsets, touchableRegion); 1741 } catch (RemoteException e) { 1742 } 1743 } 1744 } 1745 1746 boolean skipDraw = false; 1747 1748 if (mFirst) { 1749 // handle first focus request 1750 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: mView.hasFocus()=" 1751 + mView.hasFocus()); 1752 if (mView != null) { 1753 if (!mView.hasFocus()) { 1754 mView.requestFocus(View.FOCUS_FORWARD); 1755 mFocusedView = mRealFocusedView = mView.findFocus(); 1756 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: requested focused view=" 1757 + mFocusedView); 1758 } else { 1759 mRealFocusedView = mView.findFocus(); 1760 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: existing focused view=" 1761 + mRealFocusedView); 1762 } 1763 } 1764 if ((relayoutResult&WindowManagerImpl.RELAYOUT_RES_ANIMATING) != 0) { 1765 // The first time we relayout the window, if the system is 1766 // doing window animations, we want to hold of on any future 1767 // draws until the animation is done. 1768 mWindowsAnimating = true; 1769 } 1770 } else if (mWindowsAnimating) { 1771 skipDraw = true; 1772 } 1773 1774 mFirst = false; 1775 mWillDrawSoon = false; 1776 mNewSurfaceNeeded = false; 1777 mViewVisibility = viewVisibility; 1778 1779 if (mAttachInfo.mHasWindowFocus) { 1780 final boolean imTarget = WindowManager.LayoutParams 1781 .mayUseInputMethod(mWindowAttributes.flags); 1782 if (imTarget != mLastWasImTarget) { 1783 mLastWasImTarget = imTarget; 1784 InputMethodManager imm = InputMethodManager.peekInstance(); 1785 if (imm != null && imTarget) { 1786 imm.startGettingWindowFocus(mView); 1787 imm.onWindowFocus(mView, mView.findFocus(), 1788 mWindowAttributes.softInputMode, 1789 !mHasHadWindowFocus, mWindowAttributes.flags); 1790 } 1791 } 1792 } 1793 1794 // Remember if we must report the next draw. 1795 if ((relayoutResult & WindowManagerImpl.RELAYOUT_RES_FIRST_TIME) != 0) { 1796 mReportNextDraw = true; 1797 } 1798 1799 boolean cancelDraw = attachInfo.mTreeObserver.dispatchOnPreDraw() || 1800 viewVisibility != View.VISIBLE; 1801 1802 if (!cancelDraw && !newSurface) { 1803 if (!skipDraw || mReportNextDraw) { 1804 if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 1805 for (int i = 0; i < mPendingTransitions.size(); ++i) { 1806 mPendingTransitions.get(i).startChangingAnimations(); 1807 } 1808 mPendingTransitions.clear(); 1809 } 1810 1811 performDraw(); 1812 } 1813 } else { 1814 if (viewVisibility == View.VISIBLE) { 1815 // Try again 1816 scheduleTraversals(); 1817 } else if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 1818 for (int i = 0; i < mPendingTransitions.size(); ++i) { 1819 mPendingTransitions.get(i).endChangingAnimations(); 1820 } 1821 mPendingTransitions.clear(); 1822 } 1823 } 1824 } 1825 1826 private void performMeasure(int childWidthMeasureSpec, int childHeightMeasureSpec) { 1827 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "measure"); 1828 try { 1829 mView.measure(childWidthMeasureSpec, childHeightMeasureSpec); 1830 } finally { 1831 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 1832 } 1833 } 1834 1835 private void performLayout() { 1836 mLayoutRequested = false; 1837 mScrollMayChange = true; 1838 1839 final View host = mView; 1840 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) { 1841 Log.v(TAG, "Laying out " + host + " to (" + 1842 host.getMeasuredWidth() + ", " + host.getMeasuredHeight() + ")"); 1843 } 1844 1845 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "layout"); 1846 try { 1847 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 1848 } finally { 1849 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 1850 } 1851 } 1852 1853 public void requestTransparentRegion(View child) { 1854 // the test below should not fail unless someone is messing with us 1855 checkThread(); 1856 if (mView == child) { 1857 mView.mPrivateFlags |= View.REQUEST_TRANSPARENT_REGIONS; 1858 // Need to make sure we re-evaluate the window attributes next 1859 // time around, to ensure the window has the correct format. 1860 mWindowAttributesChanged = true; 1861 mWindowAttributesChangesFlag = 0; 1862 requestLayout(); 1863 } 1864 } 1865 1866 /** 1867 * Figures out the measure spec for the root view in a window based on it's 1868 * layout params. 1869 * 1870 * @param windowSize 1871 * The available width or height of the window 1872 * 1873 * @param rootDimension 1874 * The layout params for one dimension (width or height) of the 1875 * window. 1876 * 1877 * @return The measure spec to use to measure the root view. 1878 */ 1879 private static int getRootMeasureSpec(int windowSize, int rootDimension) { 1880 int measureSpec; 1881 switch (rootDimension) { 1882 1883 case ViewGroup.LayoutParams.MATCH_PARENT: 1884 // Window can't resize. Force root view to be windowSize. 1885 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.EXACTLY); 1886 break; 1887 case ViewGroup.LayoutParams.WRAP_CONTENT: 1888 // Window can resize. Set max size for root view. 1889 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.AT_MOST); 1890 break; 1891 default: 1892 // Window wants to be an exact size. Force root view to be that size. 1893 measureSpec = MeasureSpec.makeMeasureSpec(rootDimension, MeasureSpec.EXACTLY); 1894 break; 1895 } 1896 return measureSpec; 1897 } 1898 1899 int mHardwareYOffset; 1900 int mResizeAlpha; 1901 final Paint mResizePaint = new Paint(); 1902 1903 public void onHardwarePreDraw(HardwareCanvas canvas) { 1904 canvas.translate(0, -mHardwareYOffset); 1905 } 1906 1907 public void onHardwarePostDraw(HardwareCanvas canvas) { 1908 if (mResizeBuffer != null) { 1909 mResizePaint.setAlpha(mResizeAlpha); 1910 canvas.drawHardwareLayer(mResizeBuffer, 0.0f, mHardwareYOffset, mResizePaint); 1911 } 1912 drawAccessibilityFocusedDrawableIfNeeded(canvas); 1913 } 1914 1915 /** 1916 * @hide 1917 */ 1918 void outputDisplayList(View view) { 1919 if (mAttachInfo != null && mAttachInfo.mHardwareCanvas != null) { 1920 DisplayList displayList = view.getDisplayList(); 1921 if (displayList != null) { 1922 mAttachInfo.mHardwareCanvas.outputDisplayList(displayList); 1923 } 1924 } 1925 } 1926 1927 /** 1928 * @see #PROPERTY_PROFILE_RENDERING 1929 */ 1930 private void profileRendering(boolean enabled) { 1931 if (mProfileRendering) { 1932 mRenderProfilingEnabled = enabled; 1933 if (mRenderProfiler == null) { 1934 mRenderProfiler = new Thread(new Runnable() { 1935 @Override 1936 public void run() { 1937 Log.d(TAG, "Starting profiling thread"); 1938 while (mRenderProfilingEnabled) { 1939 mAttachInfo.mHandler.post(new Runnable() { 1940 @Override 1941 public void run() { 1942 mDirty.set(0, 0, mWidth, mHeight); 1943 scheduleTraversals(); 1944 } 1945 }); 1946 try { 1947 // TODO: This should use vsync when we get an API 1948 Thread.sleep(15); 1949 } catch (InterruptedException e) { 1950 Log.d(TAG, "Exiting profiling thread"); 1951 } 1952 } 1953 } 1954 }, "Rendering Profiler"); 1955 mRenderProfiler.start(); 1956 } else { 1957 mRenderProfiler.interrupt(); 1958 mRenderProfiler = null; 1959 } 1960 } 1961 } 1962 1963 /** 1964 * Called from draw() when DEBUG_FPS is enabled 1965 */ 1966 private void trackFPS() { 1967 // Tracks frames per second drawn. First value in a series of draws may be bogus 1968 // because it down not account for the intervening idle time 1969 long nowTime = System.currentTimeMillis(); 1970 if (mFpsStartTime < 0) { 1971 mFpsStartTime = mFpsPrevTime = nowTime; 1972 mFpsNumFrames = 0; 1973 } else { 1974 ++mFpsNumFrames; 1975 String thisHash = Integer.toHexString(System.identityHashCode(this)); 1976 long frameTime = nowTime - mFpsPrevTime; 1977 long totalTime = nowTime - mFpsStartTime; 1978 Log.v(TAG, "0x" + thisHash + "\tFrame time:\t" + frameTime); 1979 mFpsPrevTime = nowTime; 1980 if (totalTime > 1000) { 1981 float fps = (float) mFpsNumFrames * 1000 / totalTime; 1982 Log.v(TAG, "0x" + thisHash + "\tFPS:\t" + fps); 1983 mFpsStartTime = nowTime; 1984 mFpsNumFrames = 0; 1985 } 1986 } 1987 } 1988 1989 private void performDraw() { 1990 if (!mAttachInfo.mScreenOn && !mReportNextDraw) { 1991 return; 1992 } 1993 1994 final boolean fullRedrawNeeded = mFullRedrawNeeded; 1995 mFullRedrawNeeded = false; 1996 1997 mIsDrawing = true; 1998 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "draw"); 1999 try { 2000 draw(fullRedrawNeeded); 2001 } finally { 2002 mIsDrawing = false; 2003 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2004 } 2005 2006 if (mReportNextDraw) { 2007 mReportNextDraw = false; 2008 2009 if (LOCAL_LOGV) { 2010 Log.v(TAG, "FINISHED DRAWING: " + mWindowAttributes.getTitle()); 2011 } 2012 if (mSurfaceHolder != null && mSurface.isValid()) { 2013 mSurfaceHolderCallback.surfaceRedrawNeeded(mSurfaceHolder); 2014 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 2015 if (callbacks != null) { 2016 for (SurfaceHolder.Callback c : callbacks) { 2017 if (c instanceof SurfaceHolder.Callback2) { 2018 ((SurfaceHolder.Callback2)c).surfaceRedrawNeeded( 2019 mSurfaceHolder); 2020 } 2021 } 2022 } 2023 } 2024 try { 2025 sWindowSession.finishDrawing(mWindow); 2026 } catch (RemoteException e) { 2027 } 2028 } 2029 } 2030 2031 private void draw(boolean fullRedrawNeeded) { 2032 Surface surface = mSurface; 2033 if (surface == null || !surface.isValid()) { 2034 return; 2035 } 2036 2037 if (DEBUG_FPS) { 2038 trackFPS(); 2039 } 2040 2041 if (!sFirstDrawComplete) { 2042 synchronized (sFirstDrawHandlers) { 2043 sFirstDrawComplete = true; 2044 final int count = sFirstDrawHandlers.size(); 2045 for (int i = 0; i< count; i++) { 2046 mHandler.post(sFirstDrawHandlers.get(i)); 2047 } 2048 } 2049 } 2050 2051 scrollToRectOrFocus(null, false); 2052 2053 final AttachInfo attachInfo = mAttachInfo; 2054 if (attachInfo.mViewScrollChanged) { 2055 attachInfo.mViewScrollChanged = false; 2056 attachInfo.mTreeObserver.dispatchOnScrollChanged(); 2057 } 2058 2059 int yoff; 2060 boolean animating = mScroller != null && mScroller.computeScrollOffset(); 2061 if (animating) { 2062 yoff = mScroller.getCurrY(); 2063 } else { 2064 yoff = mScrollY; 2065 } 2066 if (mCurScrollY != yoff) { 2067 mCurScrollY = yoff; 2068 fullRedrawNeeded = true; 2069 } 2070 2071 final float appScale = attachInfo.mApplicationScale; 2072 final boolean scalingRequired = attachInfo.mScalingRequired; 2073 2074 int resizeAlpha = 0; 2075 if (mResizeBuffer != null) { 2076 long deltaTime = SystemClock.uptimeMillis() - mResizeBufferStartTime; 2077 if (deltaTime < mResizeBufferDuration) { 2078 float amt = deltaTime/(float) mResizeBufferDuration; 2079 amt = mResizeInterpolator.getInterpolation(amt); 2080 animating = true; 2081 resizeAlpha = 255 - (int)(amt*255); 2082 } else { 2083 disposeResizeBuffer(); 2084 } 2085 } 2086 2087 final Rect dirty = mDirty; 2088 if (mSurfaceHolder != null) { 2089 // The app owns the surface, we won't draw. 2090 dirty.setEmpty(); 2091 if (animating) { 2092 if (mScroller != null) { 2093 mScroller.abortAnimation(); 2094 } 2095 disposeResizeBuffer(); 2096 } 2097 return; 2098 } 2099 2100 if (fullRedrawNeeded) { 2101 attachInfo.mIgnoreDirtyState = true; 2102 dirty.set(0, 0, (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 2103 } 2104 2105 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2106 Log.v(TAG, "Draw " + mView + "/" 2107 + mWindowAttributes.getTitle() 2108 + ": dirty={" + dirty.left + "," + dirty.top 2109 + "," + dirty.right + "," + dirty.bottom + "} surface=" 2110 + surface + " surface.isValid()=" + surface.isValid() + ", appScale:" + 2111 appScale + ", width=" + mWidth + ", height=" + mHeight); 2112 } 2113 2114 attachInfo.mTreeObserver.dispatchOnDraw(); 2115 2116 if (!dirty.isEmpty() || mIsAnimating) { 2117 if (attachInfo.mHardwareRenderer != null && attachInfo.mHardwareRenderer.isEnabled()) { 2118 // Draw with hardware renderer. 2119 mIsAnimating = false; 2120 mHardwareYOffset = yoff; 2121 mResizeAlpha = resizeAlpha; 2122 2123 mCurrentDirty.set(dirty); 2124 mCurrentDirty.union(mPreviousDirty); 2125 mPreviousDirty.set(dirty); 2126 dirty.setEmpty(); 2127 2128 if (attachInfo.mHardwareRenderer.draw(mView, attachInfo, this, 2129 animating ? null : mCurrentDirty)) { 2130 mPreviousDirty.set(0, 0, mWidth, mHeight); 2131 } 2132 } else if (!drawSoftware(surface, attachInfo, yoff, scalingRequired, dirty)) { 2133 return; 2134 } 2135 } 2136 2137 if (animating) { 2138 mFullRedrawNeeded = true; 2139 scheduleTraversals(); 2140 } 2141 } 2142 2143 /** 2144 * @return true if drawing was succesfull, false if an error occurred 2145 */ 2146 private boolean drawSoftware(Surface surface, AttachInfo attachInfo, int yoff, 2147 boolean scalingRequired, Rect dirty) { 2148 2149 // If we get here with a disabled & requested hardware renderer, something went 2150 // wrong (an invalidate posted right before we destroyed the hardware surface 2151 // for instance) so we should just bail out. Locking the surface with software 2152 // rendering at this point would lock it forever and prevent hardware renderer 2153 // from doing its job when it comes back. 2154 if (attachInfo.mHardwareRenderer != null && !attachInfo.mHardwareRenderer.isEnabled() && 2155 attachInfo.mHardwareRenderer.isRequested()) { 2156 mFullRedrawNeeded = true; 2157 scheduleTraversals(); 2158 return false; 2159 } 2160 2161 // Draw with software renderer. 2162 Canvas canvas; 2163 try { 2164 int left = dirty.left; 2165 int top = dirty.top; 2166 int right = dirty.right; 2167 int bottom = dirty.bottom; 2168 2169 canvas = mSurface.lockCanvas(dirty); 2170 2171 if (left != dirty.left || top != dirty.top || right != dirty.right || 2172 bottom != dirty.bottom) { 2173 attachInfo.mIgnoreDirtyState = true; 2174 } 2175 2176 // TODO: Do this in native 2177 canvas.setDensity(mDensity); 2178 } catch (Surface.OutOfResourcesException e) { 2179 Log.e(TAG, "OutOfResourcesException locking surface", e); 2180 try { 2181 if (!sWindowSession.outOfMemory(mWindow)) { 2182 Slog.w(TAG, "No processes killed for memory; killing self"); 2183 Process.killProcess(Process.myPid()); 2184 } 2185 } catch (RemoteException ex) { 2186 } 2187 mLayoutRequested = true; // ask wm for a new surface next time. 2188 return false; 2189 } catch (IllegalArgumentException e) { 2190 Log.e(TAG, "Could not lock surface", e); 2191 // Don't assume this is due to out of memory, it could be 2192 // something else, and if it is something else then we could 2193 // kill stuff (or ourself) for no reason. 2194 mLayoutRequested = true; // ask wm for a new surface next time. 2195 return false; 2196 } 2197 2198 try { 2199 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2200 Log.v(TAG, "Surface " + surface + " drawing to bitmap w=" 2201 + canvas.getWidth() + ", h=" + canvas.getHeight()); 2202 //canvas.drawARGB(255, 255, 0, 0); 2203 } 2204 2205 // If this bitmap's format includes an alpha channel, we 2206 // need to clear it before drawing so that the child will 2207 // properly re-composite its drawing on a transparent 2208 // background. This automatically respects the clip/dirty region 2209 // or 2210 // If we are applying an offset, we need to clear the area 2211 // where the offset doesn't appear to avoid having garbage 2212 // left in the blank areas. 2213 if (!canvas.isOpaque() || yoff != 0) { 2214 canvas.drawColor(0, PorterDuff.Mode.CLEAR); 2215 } 2216 2217 dirty.setEmpty(); 2218 mIsAnimating = false; 2219 attachInfo.mDrawingTime = SystemClock.uptimeMillis(); 2220 mView.mPrivateFlags |= View.DRAWN; 2221 2222 if (DEBUG_DRAW) { 2223 Context cxt = mView.getContext(); 2224 Log.i(TAG, "Drawing: package:" + cxt.getPackageName() + 2225 ", metrics=" + cxt.getResources().getDisplayMetrics() + 2226 ", compatibilityInfo=" + cxt.getResources().getCompatibilityInfo()); 2227 } 2228 try { 2229 canvas.translate(0, -yoff); 2230 if (mTranslator != null) { 2231 mTranslator.translateCanvas(canvas); 2232 } 2233 canvas.setScreenDensity(scalingRequired 2234 ? DisplayMetrics.DENSITY_DEVICE : 0); 2235 attachInfo.mSetIgnoreDirtyState = false; 2236 2237 mView.draw(canvas); 2238 2239 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2240 } finally { 2241 if (!attachInfo.mSetIgnoreDirtyState) { 2242 // Only clear the flag if it was not set during the mView.draw() call 2243 attachInfo.mIgnoreDirtyState = false; 2244 } 2245 } 2246 } finally { 2247 try { 2248 surface.unlockCanvasAndPost(canvas); 2249 } catch (IllegalArgumentException e) { 2250 Log.e(TAG, "Could not unlock surface", e); 2251 mLayoutRequested = true; // ask wm for a new surface next time. 2252 //noinspection ReturnInsideFinallyBlock 2253 return false; 2254 } 2255 2256 if (LOCAL_LOGV) { 2257 Log.v(TAG, "Surface " + surface + " unlockCanvasAndPost"); 2258 } 2259 } 2260 return true; 2261 } 2262 2263 @Override 2264 public View findViewToTakeAccessibilityFocusFromHover(View child, View descendant) { 2265 if (descendant.includeForAccessibility()) { 2266 return descendant; 2267 } 2268 return null; 2269 } 2270 2271 /** 2272 * We want to draw a highlight around the current accessibility focused. 2273 * Since adding a style for all possible view is not a viable option we 2274 * have this specialized drawing method. 2275 * 2276 * Note: We are doing this here to be able to draw the highlight for 2277 * virtual views in addition to real ones. 2278 * 2279 * @param canvas The canvas on which to draw. 2280 */ 2281 private void drawAccessibilityFocusedDrawableIfNeeded(Canvas canvas) { 2282 AccessibilityManager manager = AccessibilityManager.getInstance(mView.mContext); 2283 if (!manager.isEnabled() || !manager.isTouchExplorationEnabled()) { 2284 return; 2285 } 2286 if (mAccessibilityFocusedHost == null || mAccessibilityFocusedHost.mAttachInfo == null) { 2287 return; 2288 } 2289 Drawable drawable = getAccessibilityFocusedDrawable(); 2290 if (drawable == null) { 2291 return; 2292 } 2293 AccessibilityNodeProvider provider = 2294 mAccessibilityFocusedHost.getAccessibilityNodeProvider(); 2295 Rect bounds = mView.mAttachInfo.mTmpInvalRect; 2296 if (provider == null) { 2297 mAccessibilityFocusedHost.getDrawingRect(bounds); 2298 if (mView instanceof ViewGroup) { 2299 ViewGroup viewGroup = (ViewGroup) mView; 2300 viewGroup.offsetDescendantRectToMyCoords(mAccessibilityFocusedHost, bounds); 2301 } 2302 } else { 2303 if (mAccessibilityFocusedVirtualView == null) { 2304 mAccessibilityFocusedVirtualView = provider.findAccessibilityFocus(View.NO_ID); 2305 } 2306 if (mAccessibilityFocusedVirtualView == null) { 2307 return; 2308 } 2309 mAccessibilityFocusedVirtualView.getBoundsInScreen(bounds); 2310 bounds.offset(-mAttachInfo.mWindowLeft, -mAttachInfo.mWindowTop); 2311 } 2312 drawable.setBounds(bounds); 2313 drawable.draw(canvas); 2314 } 2315 2316 private Drawable getAccessibilityFocusedDrawable() { 2317 if (mAttachInfo != null) { 2318 // Lazily load the accessibility focus drawable. 2319 if (mAttachInfo.mAccessibilityFocusDrawable == null) { 2320 TypedValue value = new TypedValue(); 2321 final boolean resolved = mView.mContext.getTheme().resolveAttribute( 2322 R.attr.accessibilityFocusedDrawable, value, true); 2323 if (resolved) { 2324 mAttachInfo.mAccessibilityFocusDrawable = 2325 mView.mContext.getResources().getDrawable(value.resourceId); 2326 } 2327 } 2328 return mAttachInfo.mAccessibilityFocusDrawable; 2329 } 2330 return null; 2331 } 2332 2333 void invalidateDisplayLists() { 2334 final ArrayList<DisplayList> displayLists = mDisplayLists; 2335 final int count = displayLists.size(); 2336 2337 for (int i = 0; i < count; i++) { 2338 displayLists.get(i).invalidate(); 2339 } 2340 2341 displayLists.clear(); 2342 } 2343 2344 boolean scrollToRectOrFocus(Rect rectangle, boolean immediate) { 2345 final View.AttachInfo attachInfo = mAttachInfo; 2346 final Rect ci = attachInfo.mContentInsets; 2347 final Rect vi = attachInfo.mVisibleInsets; 2348 int scrollY = 0; 2349 boolean handled = false; 2350 2351 if (vi.left > ci.left || vi.top > ci.top 2352 || vi.right > ci.right || vi.bottom > ci.bottom) { 2353 // We'll assume that we aren't going to change the scroll 2354 // offset, since we want to avoid that unless it is actually 2355 // going to make the focus visible... otherwise we scroll 2356 // all over the place. 2357 scrollY = mScrollY; 2358 // We can be called for two different situations: during a draw, 2359 // to update the scroll position if the focus has changed (in which 2360 // case 'rectangle' is null), or in response to a 2361 // requestChildRectangleOnScreen() call (in which case 'rectangle' 2362 // is non-null and we just want to scroll to whatever that 2363 // rectangle is). 2364 View focus = mRealFocusedView; 2365 2366 // When in touch mode, focus points to the previously focused view, 2367 // which may have been removed from the view hierarchy. The following 2368 // line checks whether the view is still in our hierarchy. 2369 if (focus == null || focus.mAttachInfo != mAttachInfo) { 2370 mRealFocusedView = null; 2371 return false; 2372 } 2373 2374 if (focus != mLastScrolledFocus) { 2375 // If the focus has changed, then ignore any requests to scroll 2376 // to a rectangle; first we want to make sure the entire focus 2377 // view is visible. 2378 rectangle = null; 2379 } 2380 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Eval scroll: focus=" + focus 2381 + " rectangle=" + rectangle + " ci=" + ci 2382 + " vi=" + vi); 2383 if (focus == mLastScrolledFocus && !mScrollMayChange 2384 && rectangle == null) { 2385 // Optimization: if the focus hasn't changed since last 2386 // time, and no layout has happened, then just leave things 2387 // as they are. 2388 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Keeping scroll y=" 2389 + mScrollY + " vi=" + vi.toShortString()); 2390 } else if (focus != null) { 2391 // We need to determine if the currently focused view is 2392 // within the visible part of the window and, if not, apply 2393 // a pan so it can be seen. 2394 mLastScrolledFocus = focus; 2395 mScrollMayChange = false; 2396 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Need to scroll?"); 2397 // Try to find the rectangle from the focus view. 2398 if (focus.getGlobalVisibleRect(mVisRect, null)) { 2399 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Root w=" 2400 + mView.getWidth() + " h=" + mView.getHeight() 2401 + " ci=" + ci.toShortString() 2402 + " vi=" + vi.toShortString()); 2403 if (rectangle == null) { 2404 focus.getFocusedRect(mTempRect); 2405 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Focus " + focus 2406 + ": focusRect=" + mTempRect.toShortString()); 2407 if (mView instanceof ViewGroup) { 2408 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 2409 focus, mTempRect); 2410 } 2411 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2412 "Focus in window: focusRect=" 2413 + mTempRect.toShortString() 2414 + " visRect=" + mVisRect.toShortString()); 2415 } else { 2416 mTempRect.set(rectangle); 2417 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2418 "Request scroll to rect: " 2419 + mTempRect.toShortString() 2420 + " visRect=" + mVisRect.toShortString()); 2421 } 2422 if (mTempRect.intersect(mVisRect)) { 2423 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2424 "Focus window visible rect: " 2425 + mTempRect.toShortString()); 2426 if (mTempRect.height() > 2427 (mView.getHeight()-vi.top-vi.bottom)) { 2428 // If the focus simply is not going to fit, then 2429 // best is probably just to leave things as-is. 2430 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2431 "Too tall; leaving scrollY=" + scrollY); 2432 } else if ((mTempRect.top-scrollY) < vi.top) { 2433 scrollY -= vi.top - (mTempRect.top-scrollY); 2434 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2435 "Top covered; scrollY=" + scrollY); 2436 } else if ((mTempRect.bottom-scrollY) 2437 > (mView.getHeight()-vi.bottom)) { 2438 scrollY += (mTempRect.bottom-scrollY) 2439 - (mView.getHeight()-vi.bottom); 2440 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2441 "Bottom covered; scrollY=" + scrollY); 2442 } 2443 handled = true; 2444 } 2445 } 2446 } 2447 } 2448 2449 if (scrollY != mScrollY) { 2450 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Pan scroll changed: old=" 2451 + mScrollY + " , new=" + scrollY); 2452 if (!immediate && mResizeBuffer == null) { 2453 if (mScroller == null) { 2454 mScroller = new Scroller(mView.getContext()); 2455 } 2456 mScroller.startScroll(0, mScrollY, 0, scrollY-mScrollY); 2457 } else if (mScroller != null) { 2458 mScroller.abortAnimation(); 2459 } 2460 mScrollY = scrollY; 2461 } 2462 2463 return handled; 2464 } 2465 2466 /** 2467 * @hide 2468 */ 2469 public View getAccessibilityFocusedHost() { 2470 return mAccessibilityFocusedHost; 2471 } 2472 2473 /** 2474 * @hide 2475 */ 2476 public AccessibilityNodeInfo getAccessibilityFocusedVirtualView() { 2477 return mAccessibilityFocusedVirtualView; 2478 } 2479 2480 void setAccessibilityFocusedHost(View host) { 2481 // If we have a virtual view with accessibility focus we need 2482 // to clear the focus and invalidate the virtual view bounds. 2483 if (mAccessibilityFocusedVirtualView != null) { 2484 2485 AccessibilityNodeInfo focusNode = mAccessibilityFocusedVirtualView; 2486 View focusHost = mAccessibilityFocusedHost; 2487 focusHost.clearAccessibilityFocusNoCallbacks(); 2488 2489 // Wipe the state of the current accessibility focus since 2490 // the call into the provider to clear accessibility focus 2491 // will fire an accessibility event which will end up calling 2492 // this method and we want to have clean state when this 2493 // invocation happens. 2494 mAccessibilityFocusedHost = null; 2495 mAccessibilityFocusedVirtualView = null; 2496 2497 AccessibilityNodeProvider provider = focusHost.getAccessibilityNodeProvider(); 2498 if (provider != null) { 2499 // Invalidate the area of the cleared accessibility focus. 2500 focusNode.getBoundsInParent(mTempRect); 2501 focusHost.invalidate(mTempRect); 2502 // Clear accessibility focus in the virtual node. 2503 final int virtualNodeId = AccessibilityNodeInfo.getVirtualDescendantId( 2504 focusNode.getSourceNodeId()); 2505 provider.performAction(virtualNodeId, 2506 AccessibilityNodeInfo.ACTION_CLEAR_ACCESSIBILITY_FOCUS, null); 2507 } 2508 } 2509 if (mAccessibilityFocusedHost != null) { 2510 // Clear accessibility focus in the view. 2511 mAccessibilityFocusedHost.clearAccessibilityFocusNoCallbacks(); 2512 } 2513 2514 // Set the new focus host. 2515 mAccessibilityFocusedHost = host; 2516 2517 // If the host has a provide find the virtual descendant that has focus. 2518 if (mAccessibilityFocusedHost != null) { 2519 AccessibilityNodeProvider provider = 2520 mAccessibilityFocusedHost.getAccessibilityNodeProvider(); 2521 if (provider != null) { 2522 mAccessibilityFocusedVirtualView = provider.findAccessibilityFocus(View.NO_ID); 2523 return; 2524 } 2525 } 2526 } 2527 2528 public void requestChildFocus(View child, View focused) { 2529 checkThread(); 2530 2531 if (DEBUG_INPUT_RESIZE) { 2532 Log.v(TAG, "Request child focus: focus now " + focused); 2533 } 2534 2535 mAttachInfo.mTreeObserver.dispatchOnGlobalFocusChange(mOldFocusedView, focused); 2536 scheduleTraversals(); 2537 2538 mFocusedView = mRealFocusedView = focused; 2539 } 2540 2541 public void clearChildFocus(View child) { 2542 checkThread(); 2543 2544 if (DEBUG_INPUT_RESIZE) { 2545 Log.v(TAG, "Clearing child focus"); 2546 } 2547 2548 mOldFocusedView = mFocusedView; 2549 2550 // Invoke the listener only if there is no view to take focus 2551 if (focusSearch(null, View.FOCUS_FORWARD) == null) { 2552 mAttachInfo.mTreeObserver.dispatchOnGlobalFocusChange(mOldFocusedView, null); 2553 } 2554 2555 mFocusedView = mRealFocusedView = null; 2556 } 2557 2558 @Override 2559 public ViewParent getParentForAccessibility() { 2560 return null; 2561 } 2562 2563 public void focusableViewAvailable(View v) { 2564 checkThread(); 2565 if (mView != null) { 2566 if (!mView.hasFocus()) { 2567 v.requestFocus(); 2568 } else { 2569 // the one case where will transfer focus away from the current one 2570 // is if the current view is a view group that prefers to give focus 2571 // to its children first AND the view is a descendant of it. 2572 mFocusedView = mView.findFocus(); 2573 boolean descendantsHaveDibsOnFocus = 2574 (mFocusedView instanceof ViewGroup) && 2575 (((ViewGroup) mFocusedView).getDescendantFocusability() == 2576 ViewGroup.FOCUS_AFTER_DESCENDANTS); 2577 if (descendantsHaveDibsOnFocus && isViewDescendantOf(v, mFocusedView)) { 2578 // If a view gets the focus, the listener will be invoked from requestChildFocus() 2579 v.requestFocus(); 2580 } 2581 } 2582 } 2583 } 2584 2585 public void recomputeViewAttributes(View child) { 2586 checkThread(); 2587 if (mView == child) { 2588 mAttachInfo.mRecomputeGlobalAttributes = true; 2589 if (!mWillDrawSoon) { 2590 scheduleTraversals(); 2591 } 2592 } 2593 } 2594 2595 void dispatchDetachedFromWindow() { 2596 if (mView != null && mView.mAttachInfo != null) { 2597 if (mAttachInfo.mHardwareRenderer != null && 2598 mAttachInfo.mHardwareRenderer.isEnabled()) { 2599 mAttachInfo.mHardwareRenderer.validate(); 2600 } 2601 mView.dispatchDetachedFromWindow(); 2602 } 2603 2604 mAccessibilityInteractionConnectionManager.ensureNoConnection(); 2605 mAccessibilityManager.removeAccessibilityStateChangeListener( 2606 mAccessibilityInteractionConnectionManager); 2607 removeSendWindowContentChangedCallback(); 2608 2609 destroyHardwareRenderer(); 2610 2611 setAccessibilityFocusedHost(null); 2612 2613 mView = null; 2614 mAttachInfo.mRootView = null; 2615 mAttachInfo.mSurface = null; 2616 2617 mSurface.release(); 2618 2619 if (mInputQueueCallback != null && mInputQueue != null) { 2620 mInputQueueCallback.onInputQueueDestroyed(mInputQueue); 2621 mInputQueueCallback = null; 2622 mInputQueue = null; 2623 } else if (mInputEventReceiver != null) { 2624 mInputEventReceiver.dispose(); 2625 mInputEventReceiver = null; 2626 } 2627 try { 2628 sWindowSession.remove(mWindow); 2629 } catch (RemoteException e) { 2630 } 2631 2632 // Dispose the input channel after removing the window so the Window Manager 2633 // doesn't interpret the input channel being closed as an abnormal termination. 2634 if (mInputChannel != null) { 2635 mInputChannel.dispose(); 2636 mInputChannel = null; 2637 } 2638 2639 unscheduleTraversals(); 2640 } 2641 2642 void updateConfiguration(Configuration config, boolean force) { 2643 if (DEBUG_CONFIGURATION) Log.v(TAG, 2644 "Applying new config to window " 2645 + mWindowAttributes.getTitle() 2646 + ": " + config); 2647 2648 CompatibilityInfo ci = mCompatibilityInfo.getIfNeeded(); 2649 if (ci != null) { 2650 config = new Configuration(config); 2651 ci.applyToConfiguration(config); 2652 } 2653 2654 synchronized (sConfigCallbacks) { 2655 for (int i=sConfigCallbacks.size()-1; i>=0; i--) { 2656 sConfigCallbacks.get(i).onConfigurationChanged(config); 2657 } 2658 } 2659 if (mView != null) { 2660 // At this point the resources have been updated to 2661 // have the most recent config, whatever that is. Use 2662 // the on in them which may be newer. 2663 config = mView.getResources().getConfiguration(); 2664 if (force || mLastConfiguration.diff(config) != 0) { 2665 mLastConfiguration.setTo(config); 2666 mView.dispatchConfigurationChanged(config); 2667 } 2668 } 2669 } 2670 2671 /** 2672 * Return true if child is an ancestor of parent, (or equal to the parent). 2673 */ 2674 public static boolean isViewDescendantOf(View child, View parent) { 2675 if (child == parent) { 2676 return true; 2677 } 2678 2679 final ViewParent theParent = child.getParent(); 2680 return (theParent instanceof ViewGroup) && isViewDescendantOf((View) theParent, parent); 2681 } 2682 2683 private static void forceLayout(View view) { 2684 view.forceLayout(); 2685 if (view instanceof ViewGroup) { 2686 ViewGroup group = (ViewGroup) view; 2687 final int count = group.getChildCount(); 2688 for (int i = 0; i < count; i++) { 2689 forceLayout(group.getChildAt(i)); 2690 } 2691 } 2692 } 2693 2694 private final static int MSG_INVALIDATE = 1; 2695 private final static int MSG_INVALIDATE_RECT = 2; 2696 private final static int MSG_DIE = 3; 2697 private final static int MSG_RESIZED = 4; 2698 private final static int MSG_RESIZED_REPORT = 5; 2699 private final static int MSG_WINDOW_FOCUS_CHANGED = 6; 2700 private final static int MSG_DISPATCH_KEY = 7; 2701 private final static int MSG_DISPATCH_APP_VISIBILITY = 8; 2702 private final static int MSG_DISPATCH_GET_NEW_SURFACE = 9; 2703 private final static int MSG_IME_FINISHED_EVENT = 10; 2704 private final static int MSG_DISPATCH_KEY_FROM_IME = 11; 2705 private final static int MSG_FINISH_INPUT_CONNECTION = 12; 2706 private final static int MSG_CHECK_FOCUS = 13; 2707 private final static int MSG_CLOSE_SYSTEM_DIALOGS = 14; 2708 private final static int MSG_DISPATCH_DRAG_EVENT = 15; 2709 private final static int MSG_DISPATCH_DRAG_LOCATION_EVENT = 16; 2710 private final static int MSG_DISPATCH_SYSTEM_UI_VISIBILITY = 17; 2711 private final static int MSG_UPDATE_CONFIGURATION = 18; 2712 private final static int MSG_PROCESS_INPUT_EVENTS = 19; 2713 private final static int MSG_DISPATCH_SCREEN_STATE = 20; 2714 private final static int MSG_INVALIDATE_DISPLAY_LIST = 21; 2715 private final static int MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST = 22; 2716 private final static int MSG_DISPATCH_DONE_ANIMATING = 23; 2717 private final static int MSG_INVALIDATE_WORLD = 24; 2718 2719 final class ViewRootHandler extends Handler { 2720 @Override 2721 public String getMessageName(Message message) { 2722 switch (message.what) { 2723 case MSG_INVALIDATE: 2724 return "MSG_INVALIDATE"; 2725 case MSG_INVALIDATE_RECT: 2726 return "MSG_INVALIDATE_RECT"; 2727 case MSG_DIE: 2728 return "MSG_DIE"; 2729 case MSG_RESIZED: 2730 return "MSG_RESIZED"; 2731 case MSG_RESIZED_REPORT: 2732 return "MSG_RESIZED_REPORT"; 2733 case MSG_WINDOW_FOCUS_CHANGED: 2734 return "MSG_WINDOW_FOCUS_CHANGED"; 2735 case MSG_DISPATCH_KEY: 2736 return "MSG_DISPATCH_KEY"; 2737 case MSG_DISPATCH_APP_VISIBILITY: 2738 return "MSG_DISPATCH_APP_VISIBILITY"; 2739 case MSG_DISPATCH_GET_NEW_SURFACE: 2740 return "MSG_DISPATCH_GET_NEW_SURFACE"; 2741 case MSG_IME_FINISHED_EVENT: 2742 return "MSG_IME_FINISHED_EVENT"; 2743 case MSG_DISPATCH_KEY_FROM_IME: 2744 return "MSG_DISPATCH_KEY_FROM_IME"; 2745 case MSG_FINISH_INPUT_CONNECTION: 2746 return "MSG_FINISH_INPUT_CONNECTION"; 2747 case MSG_CHECK_FOCUS: 2748 return "MSG_CHECK_FOCUS"; 2749 case MSG_CLOSE_SYSTEM_DIALOGS: 2750 return "MSG_CLOSE_SYSTEM_DIALOGS"; 2751 case MSG_DISPATCH_DRAG_EVENT: 2752 return "MSG_DISPATCH_DRAG_EVENT"; 2753 case MSG_DISPATCH_DRAG_LOCATION_EVENT: 2754 return "MSG_DISPATCH_DRAG_LOCATION_EVENT"; 2755 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: 2756 return "MSG_DISPATCH_SYSTEM_UI_VISIBILITY"; 2757 case MSG_UPDATE_CONFIGURATION: 2758 return "MSG_UPDATE_CONFIGURATION"; 2759 case MSG_PROCESS_INPUT_EVENTS: 2760 return "MSG_PROCESS_INPUT_EVENTS"; 2761 case MSG_DISPATCH_SCREEN_STATE: 2762 return "MSG_DISPATCH_SCREEN_STATE"; 2763 case MSG_INVALIDATE_DISPLAY_LIST: 2764 return "MSG_INVALIDATE_DISPLAY_LIST"; 2765 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: 2766 return "MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST"; 2767 case MSG_DISPATCH_DONE_ANIMATING: 2768 return "MSG_DISPATCH_DONE_ANIMATING"; 2769 } 2770 return super.getMessageName(message); 2771 } 2772 2773 @Override 2774 public void handleMessage(Message msg) { 2775 switch (msg.what) { 2776 case MSG_INVALIDATE: 2777 ((View) msg.obj).invalidate(); 2778 break; 2779 case MSG_INVALIDATE_RECT: 2780 final View.AttachInfo.InvalidateInfo info = (View.AttachInfo.InvalidateInfo) msg.obj; 2781 info.target.invalidate(info.left, info.top, info.right, info.bottom); 2782 info.release(); 2783 break; 2784 case MSG_IME_FINISHED_EVENT: 2785 handleImeFinishedEvent(msg.arg1, msg.arg2 != 0); 2786 break; 2787 case MSG_PROCESS_INPUT_EVENTS: 2788 mProcessInputEventsScheduled = false; 2789 doProcessInputEvents(); 2790 break; 2791 case MSG_DISPATCH_APP_VISIBILITY: 2792 handleAppVisibility(msg.arg1 != 0); 2793 break; 2794 case MSG_DISPATCH_GET_NEW_SURFACE: 2795 handleGetNewSurface(); 2796 break; 2797 case MSG_RESIZED: 2798 ResizedInfo ri = (ResizedInfo)msg.obj; 2799 2800 if (mWinFrame.width() == msg.arg1 && mWinFrame.height() == msg.arg2 2801 && mPendingContentInsets.equals(ri.contentInsets) 2802 && mPendingVisibleInsets.equals(ri.visibleInsets) 2803 && ((ResizedInfo)msg.obj).newConfig == null) { 2804 break; 2805 } 2806 // fall through... 2807 case MSG_RESIZED_REPORT: 2808 if (mAdded) { 2809 Configuration config = ((ResizedInfo)msg.obj).newConfig; 2810 if (config != null) { 2811 updateConfiguration(config, false); 2812 } 2813 mWinFrame.left = 0; 2814 mWinFrame.right = msg.arg1; 2815 mWinFrame.top = 0; 2816 mWinFrame.bottom = msg.arg2; 2817 mPendingContentInsets.set(((ResizedInfo)msg.obj).contentInsets); 2818 mPendingVisibleInsets.set(((ResizedInfo)msg.obj).visibleInsets); 2819 if (msg.what == MSG_RESIZED_REPORT) { 2820 mReportNextDraw = true; 2821 } 2822 2823 if (mView != null) { 2824 forceLayout(mView); 2825 } 2826 requestLayout(); 2827 } 2828 break; 2829 case MSG_WINDOW_FOCUS_CHANGED: { 2830 if (mAdded) { 2831 boolean hasWindowFocus = msg.arg1 != 0; 2832 mAttachInfo.mHasWindowFocus = hasWindowFocus; 2833 2834 profileRendering(hasWindowFocus); 2835 2836 if (hasWindowFocus) { 2837 boolean inTouchMode = msg.arg2 != 0; 2838 ensureTouchModeLocally(inTouchMode); 2839 2840 if (mAttachInfo.mHardwareRenderer != null && 2841 mSurface != null && mSurface.isValid()) { 2842 mFullRedrawNeeded = true; 2843 try { 2844 mAttachInfo.mHardwareRenderer.initializeIfNeeded(mWidth, mHeight, 2845 mHolder); 2846 } catch (Surface.OutOfResourcesException e) { 2847 Log.e(TAG, "OutOfResourcesException locking surface", e); 2848 try { 2849 if (!sWindowSession.outOfMemory(mWindow)) { 2850 Slog.w(TAG, "No processes killed for memory; killing self"); 2851 Process.killProcess(Process.myPid()); 2852 } 2853 } catch (RemoteException ex) { 2854 } 2855 // Retry in a bit. 2856 sendMessageDelayed(obtainMessage(msg.what, msg.arg1, msg.arg2), 500); 2857 return; 2858 } 2859 } 2860 } 2861 2862 mLastWasImTarget = WindowManager.LayoutParams 2863 .mayUseInputMethod(mWindowAttributes.flags); 2864 2865 InputMethodManager imm = InputMethodManager.peekInstance(); 2866 if (mView != null) { 2867 if (hasWindowFocus && imm != null && mLastWasImTarget) { 2868 imm.startGettingWindowFocus(mView); 2869 } 2870 mAttachInfo.mKeyDispatchState.reset(); 2871 mView.dispatchWindowFocusChanged(hasWindowFocus); 2872 } 2873 2874 // Note: must be done after the focus change callbacks, 2875 // so all of the view state is set up correctly. 2876 if (hasWindowFocus) { 2877 if (imm != null && mLastWasImTarget) { 2878 imm.onWindowFocus(mView, mView.findFocus(), 2879 mWindowAttributes.softInputMode, 2880 !mHasHadWindowFocus, mWindowAttributes.flags); 2881 } 2882 // Clear the forward bit. We can just do this directly, since 2883 // the window manager doesn't care about it. 2884 mWindowAttributes.softInputMode &= 2885 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 2886 ((WindowManager.LayoutParams)mView.getLayoutParams()) 2887 .softInputMode &= 2888 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 2889 mHasHadWindowFocus = true; 2890 } 2891 2892 setAccessibilityFocusedHost(null); 2893 2894 if (mView != null && mAccessibilityManager.isEnabled()) { 2895 if (hasWindowFocus) { 2896 mView.sendAccessibilityEvent( 2897 AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 2898 // Give accessibility focus to the view that has input 2899 // focus if such, otherwise to the first one. 2900 if (mView instanceof ViewGroup) { 2901 ViewGroup viewGroup = (ViewGroup) mView; 2902 View focused = viewGroup.findFocus(); 2903 if (focused != null) { 2904 focused.requestAccessibilityFocus(); 2905 } 2906 } 2907 // There is no accessibility focus, despite our effort 2908 // above, now just give it to the first view. 2909 if (mAccessibilityFocusedHost == null) { 2910 mView.requestAccessibilityFocus(); 2911 } 2912 } 2913 } 2914 } 2915 } break; 2916 case MSG_DIE: 2917 doDie(); 2918 break; 2919 case MSG_DISPATCH_KEY: { 2920 KeyEvent event = (KeyEvent)msg.obj; 2921 enqueueInputEvent(event, null, 0, true); 2922 } break; 2923 case MSG_DISPATCH_KEY_FROM_IME: { 2924 if (LOCAL_LOGV) Log.v( 2925 TAG, "Dispatching key " 2926 + msg.obj + " from IME to " + mView); 2927 KeyEvent event = (KeyEvent)msg.obj; 2928 if ((event.getFlags()&KeyEvent.FLAG_FROM_SYSTEM) != 0) { 2929 // The IME is trying to say this event is from the 2930 // system! Bad bad bad! 2931 //noinspection UnusedAssignment 2932 event = KeyEvent.changeFlags(event, event.getFlags() & ~KeyEvent.FLAG_FROM_SYSTEM); 2933 } 2934 enqueueInputEvent(event, null, QueuedInputEvent.FLAG_DELIVER_POST_IME, true); 2935 } break; 2936 case MSG_FINISH_INPUT_CONNECTION: { 2937 InputMethodManager imm = InputMethodManager.peekInstance(); 2938 if (imm != null) { 2939 imm.reportFinishInputConnection((InputConnection)msg.obj); 2940 } 2941 } break; 2942 case MSG_CHECK_FOCUS: { 2943 InputMethodManager imm = InputMethodManager.peekInstance(); 2944 if (imm != null) { 2945 imm.checkFocus(); 2946 } 2947 } break; 2948 case MSG_CLOSE_SYSTEM_DIALOGS: { 2949 if (mView != null) { 2950 mView.onCloseSystemDialogs((String)msg.obj); 2951 } 2952 } break; 2953 case MSG_DISPATCH_DRAG_EVENT: 2954 case MSG_DISPATCH_DRAG_LOCATION_EVENT: { 2955 DragEvent event = (DragEvent)msg.obj; 2956 event.mLocalState = mLocalDragState; // only present when this app called startDrag() 2957 handleDragEvent(event); 2958 } break; 2959 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: { 2960 handleDispatchSystemUiVisibilityChanged((SystemUiVisibilityInfo)msg.obj); 2961 } break; 2962 case MSG_UPDATE_CONFIGURATION: { 2963 Configuration config = (Configuration)msg.obj; 2964 if (config.isOtherSeqNewer(mLastConfiguration)) { 2965 config = mLastConfiguration; 2966 } 2967 updateConfiguration(config, false); 2968 } break; 2969 case MSG_DISPATCH_SCREEN_STATE: { 2970 if (mView != null) { 2971 handleScreenStateChange(msg.arg1 == 1); 2972 } 2973 } break; 2974 case MSG_INVALIDATE_DISPLAY_LIST: { 2975 invalidateDisplayLists(); 2976 } break; 2977 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: { 2978 setAccessibilityFocusedHost(null); 2979 } break; 2980 case MSG_DISPATCH_DONE_ANIMATING: { 2981 handleDispatchDoneAnimating(); 2982 } break; 2983 case MSG_INVALIDATE_WORLD: { 2984 invalidateWorld(mView); 2985 } break; 2986 } 2987 } 2988 } 2989 2990 final ViewRootHandler mHandler = new ViewRootHandler(); 2991 2992 /** 2993 * Something in the current window tells us we need to change the touch mode. For 2994 * example, we are not in touch mode, and the user touches the screen. 2995 * 2996 * If the touch mode has changed, tell the window manager, and handle it locally. 2997 * 2998 * @param inTouchMode Whether we want to be in touch mode. 2999 * @return True if the touch mode changed and focus changed was changed as a result 3000 */ 3001 boolean ensureTouchMode(boolean inTouchMode) { 3002 if (DBG) Log.d("touchmode", "ensureTouchMode(" + inTouchMode + "), current " 3003 + "touch mode is " + mAttachInfo.mInTouchMode); 3004 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3005 3006 // tell the window manager 3007 try { 3008 sWindowSession.setInTouchMode(inTouchMode); 3009 } catch (RemoteException e) { 3010 throw new RuntimeException(e); 3011 } 3012 3013 // handle the change 3014 return ensureTouchModeLocally(inTouchMode); 3015 } 3016 3017 /** 3018 * Ensure that the touch mode for this window is set, and if it is changing, 3019 * take the appropriate action. 3020 * @param inTouchMode Whether we want to be in touch mode. 3021 * @return True if the touch mode changed and focus changed was changed as a result 3022 */ 3023 private boolean ensureTouchModeLocally(boolean inTouchMode) { 3024 if (DBG) Log.d("touchmode", "ensureTouchModeLocally(" + inTouchMode + "), current " 3025 + "touch mode is " + mAttachInfo.mInTouchMode); 3026 3027 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3028 3029 mAttachInfo.mInTouchMode = inTouchMode; 3030 mAttachInfo.mTreeObserver.dispatchOnTouchModeChanged(inTouchMode); 3031 3032 return (inTouchMode) ? enterTouchMode() : leaveTouchMode(); 3033 } 3034 3035 private boolean enterTouchMode() { 3036 if (mView != null) { 3037 if (mView.hasFocus()) { 3038 // note: not relying on mFocusedView here because this could 3039 // be when the window is first being added, and mFocused isn't 3040 // set yet. 3041 final View focused = mView.findFocus(); 3042 if (focused != null && !focused.isFocusableInTouchMode()) { 3043 3044 final ViewGroup ancestorToTakeFocus = 3045 findAncestorToTakeFocusInTouchMode(focused); 3046 if (ancestorToTakeFocus != null) { 3047 // there is an ancestor that wants focus after its descendants that 3048 // is focusable in touch mode.. give it focus 3049 return ancestorToTakeFocus.requestFocus(); 3050 } else { 3051 // nothing appropriate to have focus in touch mode, clear it out 3052 mView.unFocus(); 3053 mAttachInfo.mTreeObserver.dispatchOnGlobalFocusChange(focused, null); 3054 mFocusedView = null; 3055 mOldFocusedView = null; 3056 return true; 3057 } 3058 } 3059 } 3060 } 3061 return false; 3062 } 3063 3064 /** 3065 * Find an ancestor of focused that wants focus after its descendants and is 3066 * focusable in touch mode. 3067 * @param focused The currently focused view. 3068 * @return An appropriate view, or null if no such view exists. 3069 */ 3070 private static ViewGroup findAncestorToTakeFocusInTouchMode(View focused) { 3071 ViewParent parent = focused.getParent(); 3072 while (parent instanceof ViewGroup) { 3073 final ViewGroup vgParent = (ViewGroup) parent; 3074 if (vgParent.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 3075 && vgParent.isFocusableInTouchMode()) { 3076 return vgParent; 3077 } 3078 if (vgParent.isRootNamespace()) { 3079 return null; 3080 } else { 3081 parent = vgParent.getParent(); 3082 } 3083 } 3084 return null; 3085 } 3086 3087 private boolean leaveTouchMode() { 3088 if (mView != null) { 3089 if (mView.hasFocus()) { 3090 // i learned the hard way to not trust mFocusedView :) 3091 mFocusedView = mView.findFocus(); 3092 if (!(mFocusedView instanceof ViewGroup)) { 3093 // some view has focus, let it keep it 3094 return false; 3095 } else if (((ViewGroup)mFocusedView).getDescendantFocusability() != 3096 ViewGroup.FOCUS_AFTER_DESCENDANTS) { 3097 // some view group has focus, and doesn't prefer its children 3098 // over itself for focus, so let them keep it. 3099 return false; 3100 } 3101 } 3102 3103 // find the best view to give focus to in this brave new non-touch-mode 3104 // world 3105 final View focused = focusSearch(null, View.FOCUS_DOWN); 3106 if (focused != null) { 3107 return focused.requestFocus(View.FOCUS_DOWN); 3108 } 3109 } 3110 return false; 3111 } 3112 3113 private void deliverInputEvent(QueuedInputEvent q) { 3114 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "deliverInputEvent"); 3115 try { 3116 if (q.mEvent instanceof KeyEvent) { 3117 deliverKeyEvent(q); 3118 } else { 3119 final int source = q.mEvent.getSource(); 3120 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 3121 deliverPointerEvent(q); 3122 } else if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 3123 deliverTrackballEvent(q); 3124 } else { 3125 deliverGenericMotionEvent(q); 3126 } 3127 } 3128 } finally { 3129 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 3130 } 3131 } 3132 3133 private void deliverPointerEvent(QueuedInputEvent q) { 3134 final MotionEvent event = (MotionEvent)q.mEvent; 3135 final boolean isTouchEvent = event.isTouchEvent(); 3136 if (mInputEventConsistencyVerifier != null) { 3137 if (isTouchEvent) { 3138 mInputEventConsistencyVerifier.onTouchEvent(event, 0); 3139 } else { 3140 mInputEventConsistencyVerifier.onGenericMotionEvent(event, 0); 3141 } 3142 } 3143 3144 // If there is no view, then the event will not be handled. 3145 if (mView == null || !mAdded) { 3146 finishInputEvent(q, false); 3147 return; 3148 } 3149 3150 // Translate the pointer event for compatibility, if needed. 3151 if (mTranslator != null) { 3152 mTranslator.translateEventInScreenToAppWindow(event); 3153 } 3154 3155 // Enter touch mode on down or scroll. 3156 final int action = event.getAction(); 3157 if (action == MotionEvent.ACTION_DOWN || action == MotionEvent.ACTION_SCROLL) { 3158 ensureTouchMode(true); 3159 } 3160 3161 // Offset the scroll position. 3162 if (mCurScrollY != 0) { 3163 event.offsetLocation(0, mCurScrollY); 3164 } 3165 if (MEASURE_LATENCY) { 3166 lt.sample("A Dispatching PointerEvents", System.nanoTime() - event.getEventTimeNano()); 3167 } 3168 3169 // Remember the touch position for possible drag-initiation. 3170 if (isTouchEvent) { 3171 mLastTouchPoint.x = event.getRawX(); 3172 mLastTouchPoint.y = event.getRawY(); 3173 } 3174 3175 // Dispatch touch to view hierarchy. 3176 boolean handled = mView.dispatchPointerEvent(event); 3177 if (MEASURE_LATENCY) { 3178 lt.sample("B Dispatched PointerEvents ", System.nanoTime() - event.getEventTimeNano()); 3179 } 3180 if (handled) { 3181 finishInputEvent(q, true); 3182 return; 3183 } 3184 3185 // Pointer event was unhandled. 3186 finishInputEvent(q, false); 3187 } 3188 3189 private void deliverTrackballEvent(QueuedInputEvent q) { 3190 final MotionEvent event = (MotionEvent)q.mEvent; 3191 if (mInputEventConsistencyVerifier != null) { 3192 mInputEventConsistencyVerifier.onTrackballEvent(event, 0); 3193 } 3194 3195 // If there is no view, then the event will not be handled. 3196 if (mView == null || !mAdded) { 3197 finishInputEvent(q, false); 3198 return; 3199 } 3200 3201 // Deliver the trackball event to the view. 3202 if (mView.dispatchTrackballEvent(event)) { 3203 // If we reach this, we delivered a trackball event to mView and 3204 // mView consumed it. Because we will not translate the trackball 3205 // event into a key event, touch mode will not exit, so we exit 3206 // touch mode here. 3207 ensureTouchMode(false); 3208 3209 finishInputEvent(q, true); 3210 mLastTrackballTime = Integer.MIN_VALUE; 3211 return; 3212 } 3213 3214 // Translate the trackball event into DPAD keys and try to deliver those. 3215 final TrackballAxis x = mTrackballAxisX; 3216 final TrackballAxis y = mTrackballAxisY; 3217 3218 long curTime = SystemClock.uptimeMillis(); 3219 if ((mLastTrackballTime + MAX_TRACKBALL_DELAY) < curTime) { 3220 // It has been too long since the last movement, 3221 // so restart at the beginning. 3222 x.reset(0); 3223 y.reset(0); 3224 mLastTrackballTime = curTime; 3225 } 3226 3227 final int action = event.getAction(); 3228 final int metaState = event.getMetaState(); 3229 switch (action) { 3230 case MotionEvent.ACTION_DOWN: 3231 x.reset(2); 3232 y.reset(2); 3233 enqueueInputEvent(new KeyEvent(curTime, curTime, 3234 KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 3235 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 3236 InputDevice.SOURCE_KEYBOARD)); 3237 break; 3238 case MotionEvent.ACTION_UP: 3239 x.reset(2); 3240 y.reset(2); 3241 enqueueInputEvent(new KeyEvent(curTime, curTime, 3242 KeyEvent.ACTION_UP, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 3243 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 3244 InputDevice.SOURCE_KEYBOARD)); 3245 break; 3246 } 3247 3248 if (DEBUG_TRACKBALL) Log.v(TAG, "TB X=" + x.position + " step=" 3249 + x.step + " dir=" + x.dir + " acc=" + x.acceleration 3250 + " move=" + event.getX() 3251 + " / Y=" + y.position + " step=" 3252 + y.step + " dir=" + y.dir + " acc=" + y.acceleration 3253 + " move=" + event.getY()); 3254 final float xOff = x.collect(event.getX(), event.getEventTime(), "X"); 3255 final float yOff = y.collect(event.getY(), event.getEventTime(), "Y"); 3256 3257 // Generate DPAD events based on the trackball movement. 3258 // We pick the axis that has moved the most as the direction of 3259 // the DPAD. When we generate DPAD events for one axis, then the 3260 // other axis is reset -- we don't want to perform DPAD jumps due 3261 // to slight movements in the trackball when making major movements 3262 // along the other axis. 3263 int keycode = 0; 3264 int movement = 0; 3265 float accel = 1; 3266 if (xOff > yOff) { 3267 movement = x.generate((2/event.getXPrecision())); 3268 if (movement != 0) { 3269 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_RIGHT 3270 : KeyEvent.KEYCODE_DPAD_LEFT; 3271 accel = x.acceleration; 3272 y.reset(2); 3273 } 3274 } else if (yOff > 0) { 3275 movement = y.generate((2/event.getYPrecision())); 3276 if (movement != 0) { 3277 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_DOWN 3278 : KeyEvent.KEYCODE_DPAD_UP; 3279 accel = y.acceleration; 3280 x.reset(2); 3281 } 3282 } 3283 3284 if (keycode != 0) { 3285 if (movement < 0) movement = -movement; 3286 int accelMovement = (int)(movement * accel); 3287 if (DEBUG_TRACKBALL) Log.v(TAG, "Move: movement=" + movement 3288 + " accelMovement=" + accelMovement 3289 + " accel=" + accel); 3290 if (accelMovement > movement) { 3291 if (DEBUG_TRACKBALL) Log.v("foo", "Delivering fake DPAD: " 3292 + keycode); 3293 movement--; 3294 int repeatCount = accelMovement - movement; 3295 enqueueInputEvent(new KeyEvent(curTime, curTime, 3296 KeyEvent.ACTION_MULTIPLE, keycode, repeatCount, metaState, 3297 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 3298 InputDevice.SOURCE_KEYBOARD)); 3299 } 3300 while (movement > 0) { 3301 if (DEBUG_TRACKBALL) Log.v("foo", "Delivering fake DPAD: " 3302 + keycode); 3303 movement--; 3304 curTime = SystemClock.uptimeMillis(); 3305 enqueueInputEvent(new KeyEvent(curTime, curTime, 3306 KeyEvent.ACTION_DOWN, keycode, 0, metaState, 3307 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 3308 InputDevice.SOURCE_KEYBOARD)); 3309 enqueueInputEvent(new KeyEvent(curTime, curTime, 3310 KeyEvent.ACTION_UP, keycode, 0, metaState, 3311 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 3312 InputDevice.SOURCE_KEYBOARD)); 3313 } 3314 mLastTrackballTime = curTime; 3315 } 3316 3317 // Unfortunately we can't tell whether the application consumed the keys, so 3318 // we always consider the trackball event handled. 3319 finishInputEvent(q, true); 3320 } 3321 3322 private void deliverGenericMotionEvent(QueuedInputEvent q) { 3323 final MotionEvent event = (MotionEvent)q.mEvent; 3324 if (mInputEventConsistencyVerifier != null) { 3325 mInputEventConsistencyVerifier.onGenericMotionEvent(event, 0); 3326 } 3327 3328 final int source = event.getSource(); 3329 final boolean isJoystick = (source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0; 3330 3331 // If there is no view, then the event will not be handled. 3332 if (mView == null || !mAdded) { 3333 if (isJoystick) { 3334 updateJoystickDirection(event, false); 3335 } 3336 finishInputEvent(q, false); 3337 return; 3338 } 3339 3340 // Deliver the event to the view. 3341 if (mView.dispatchGenericMotionEvent(event)) { 3342 if (isJoystick) { 3343 updateJoystickDirection(event, false); 3344 } 3345 finishInputEvent(q, true); 3346 return; 3347 } 3348 3349 if (isJoystick) { 3350 // Translate the joystick event into DPAD keys and try to deliver those. 3351 updateJoystickDirection(event, true); 3352 finishInputEvent(q, true); 3353 } else { 3354 finishInputEvent(q, false); 3355 } 3356 } 3357 3358 private void updateJoystickDirection(MotionEvent event, boolean synthesizeNewKeys) { 3359 final long time = event.getEventTime(); 3360 final int metaState = event.getMetaState(); 3361 final int deviceId = event.getDeviceId(); 3362 final int source = event.getSource(); 3363 3364 int xDirection = joystickAxisValueToDirection(event.getAxisValue(MotionEvent.AXIS_HAT_X)); 3365 if (xDirection == 0) { 3366 xDirection = joystickAxisValueToDirection(event.getX()); 3367 } 3368 3369 int yDirection = joystickAxisValueToDirection(event.getAxisValue(MotionEvent.AXIS_HAT_Y)); 3370 if (yDirection == 0) { 3371 yDirection = joystickAxisValueToDirection(event.getY()); 3372 } 3373 3374 if (xDirection != mLastJoystickXDirection) { 3375 if (mLastJoystickXKeyCode != 0) { 3376 enqueueInputEvent(new KeyEvent(time, time, 3377 KeyEvent.ACTION_UP, mLastJoystickXKeyCode, 0, metaState, 3378 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 3379 mLastJoystickXKeyCode = 0; 3380 } 3381 3382 mLastJoystickXDirection = xDirection; 3383 3384 if (xDirection != 0 && synthesizeNewKeys) { 3385 mLastJoystickXKeyCode = xDirection > 0 3386 ? KeyEvent.KEYCODE_DPAD_RIGHT : KeyEvent.KEYCODE_DPAD_LEFT; 3387 enqueueInputEvent(new KeyEvent(time, time, 3388 KeyEvent.ACTION_DOWN, mLastJoystickXKeyCode, 0, metaState, 3389 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 3390 } 3391 } 3392 3393 if (yDirection != mLastJoystickYDirection) { 3394 if (mLastJoystickYKeyCode != 0) { 3395 enqueueInputEvent(new KeyEvent(time, time, 3396 KeyEvent.ACTION_UP, mLastJoystickYKeyCode, 0, metaState, 3397 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 3398 mLastJoystickYKeyCode = 0; 3399 } 3400 3401 mLastJoystickYDirection = yDirection; 3402 3403 if (yDirection != 0 && synthesizeNewKeys) { 3404 mLastJoystickYKeyCode = yDirection > 0 3405 ? KeyEvent.KEYCODE_DPAD_DOWN : KeyEvent.KEYCODE_DPAD_UP; 3406 enqueueInputEvent(new KeyEvent(time, time, 3407 KeyEvent.ACTION_DOWN, mLastJoystickYKeyCode, 0, metaState, 3408 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 3409 } 3410 } 3411 } 3412 3413 private static int joystickAxisValueToDirection(float value) { 3414 if (value >= 0.5f) { 3415 return 1; 3416 } else if (value <= -0.5f) { 3417 return -1; 3418 } else { 3419 return 0; 3420 } 3421 } 3422 3423 /** 3424 * Returns true if the key is used for keyboard navigation. 3425 * @param keyEvent The key event. 3426 * @return True if the key is used for keyboard navigation. 3427 */ 3428 private static boolean isNavigationKey(KeyEvent keyEvent) { 3429 switch (keyEvent.getKeyCode()) { 3430 case KeyEvent.KEYCODE_DPAD_LEFT: 3431 case KeyEvent.KEYCODE_DPAD_RIGHT: 3432 case KeyEvent.KEYCODE_DPAD_UP: 3433 case KeyEvent.KEYCODE_DPAD_DOWN: 3434 case KeyEvent.KEYCODE_DPAD_CENTER: 3435 case KeyEvent.KEYCODE_PAGE_UP: 3436 case KeyEvent.KEYCODE_PAGE_DOWN: 3437 case KeyEvent.KEYCODE_MOVE_HOME: 3438 case KeyEvent.KEYCODE_MOVE_END: 3439 case KeyEvent.KEYCODE_TAB: 3440 case KeyEvent.KEYCODE_SPACE: 3441 case KeyEvent.KEYCODE_ENTER: 3442 return true; 3443 } 3444 return false; 3445 } 3446 3447 /** 3448 * Returns true if the key is used for typing. 3449 * @param keyEvent The key event. 3450 * @return True if the key is used for typing. 3451 */ 3452 private static boolean isTypingKey(KeyEvent keyEvent) { 3453 return keyEvent.getUnicodeChar() > 0; 3454 } 3455 3456 /** 3457 * See if the key event means we should leave touch mode (and leave touch mode if so). 3458 * @param event The key event. 3459 * @return Whether this key event should be consumed (meaning the act of 3460 * leaving touch mode alone is considered the event). 3461 */ 3462 private boolean checkForLeavingTouchModeAndConsume(KeyEvent event) { 3463 // Only relevant in touch mode. 3464 if (!mAttachInfo.mInTouchMode) { 3465 return false; 3466 } 3467 3468 // Only consider leaving touch mode on DOWN or MULTIPLE actions, never on UP. 3469 final int action = event.getAction(); 3470 if (action != KeyEvent.ACTION_DOWN && action != KeyEvent.ACTION_MULTIPLE) { 3471 return false; 3472 } 3473 3474 // Don't leave touch mode if the IME told us not to. 3475 if ((event.getFlags() & KeyEvent.FLAG_KEEP_TOUCH_MODE) != 0) { 3476 return false; 3477 } 3478 3479 // If the key can be used for keyboard navigation then leave touch mode 3480 // and select a focused view if needed (in ensureTouchMode). 3481 // When a new focused view is selected, we consume the navigation key because 3482 // navigation doesn't make much sense unless a view already has focus so 3483 // the key's purpose is to set focus. 3484 if (isNavigationKey(event)) { 3485 return ensureTouchMode(false); 3486 } 3487 3488 // If the key can be used for typing then leave touch mode 3489 // and select a focused view if needed (in ensureTouchMode). 3490 // Always allow the view to process the typing key. 3491 if (isTypingKey(event)) { 3492 ensureTouchMode(false); 3493 return false; 3494 } 3495 3496 return false; 3497 } 3498 3499 private void deliverKeyEvent(QueuedInputEvent q) { 3500 final KeyEvent event = (KeyEvent)q.mEvent; 3501 if (mInputEventConsistencyVerifier != null) { 3502 mInputEventConsistencyVerifier.onKeyEvent(event, 0); 3503 } 3504 3505 if ((q.mFlags & QueuedInputEvent.FLAG_DELIVER_POST_IME) == 0) { 3506 // If there is no view, then the event will not be handled. 3507 if (mView == null || !mAdded) { 3508 finishInputEvent(q, false); 3509 return; 3510 } 3511 3512 if (LOCAL_LOGV) Log.v(TAG, "Dispatching key " + event + " to " + mView); 3513 3514 // Perform predispatching before the IME. 3515 if (mView.dispatchKeyEventPreIme(event)) { 3516 finishInputEvent(q, true); 3517 return; 3518 } 3519 3520 // Dispatch to the IME before propagating down the view hierarchy. 3521 // The IME will eventually call back into handleImeFinishedEvent. 3522 if (mLastWasImTarget) { 3523 InputMethodManager imm = InputMethodManager.peekInstance(); 3524 if (imm != null) { 3525 final int seq = event.getSequenceNumber(); 3526 if (DEBUG_IMF) Log.v(TAG, "Sending key event to IME: seq=" 3527 + seq + " event=" + event); 3528 imm.dispatchKeyEvent(mView.getContext(), seq, event, mInputMethodCallback); 3529 return; 3530 } 3531 } 3532 } 3533 3534 // Not dispatching to IME, continue with post IME actions. 3535 deliverKeyEventPostIme(q); 3536 } 3537 3538 void handleImeFinishedEvent(int seq, boolean handled) { 3539 final QueuedInputEvent q = mCurrentInputEvent; 3540 if (q != null && q.mEvent.getSequenceNumber() == seq) { 3541 final KeyEvent event = (KeyEvent)q.mEvent; 3542 if (DEBUG_IMF) { 3543 Log.v(TAG, "IME finished event: seq=" + seq 3544 + " handled=" + handled + " event=" + event); 3545 } 3546 if (handled) { 3547 finishInputEvent(q, true); 3548 } else { 3549 deliverKeyEventPostIme(q); 3550 } 3551 } else { 3552 if (DEBUG_IMF) { 3553 Log.v(TAG, "IME finished event: seq=" + seq 3554 + " handled=" + handled + ", event not found!"); 3555 } 3556 } 3557 } 3558 3559 private void deliverKeyEventPostIme(QueuedInputEvent q) { 3560 final KeyEvent event = (KeyEvent)q.mEvent; 3561 3562 // If the view went away, then the event will not be handled. 3563 if (mView == null || !mAdded) { 3564 finishInputEvent(q, false); 3565 return; 3566 } 3567 3568 // If the key's purpose is to exit touch mode then we consume it and consider it handled. 3569 if (checkForLeavingTouchModeAndConsume(event)) { 3570 finishInputEvent(q, true); 3571 return; 3572 } 3573 3574 // Make sure the fallback event policy sees all keys that will be delivered to the 3575 // view hierarchy. 3576 mFallbackEventHandler.preDispatchKeyEvent(event); 3577 3578 // Deliver the key to the view hierarchy. 3579 if (mView.dispatchKeyEvent(event)) { 3580 finishInputEvent(q, true); 3581 return; 3582 } 3583 3584 // If the Control modifier is held, try to interpret the key as a shortcut. 3585 if (event.getAction() == KeyEvent.ACTION_DOWN 3586 && event.isCtrlPressed() 3587 && event.getRepeatCount() == 0 3588 && !KeyEvent.isModifierKey(event.getKeyCode())) { 3589 if (mView.dispatchKeyShortcutEvent(event)) { 3590 finishInputEvent(q, true); 3591 return; 3592 } 3593 } 3594 3595 // Apply the fallback event policy. 3596 if (mFallbackEventHandler.dispatchKeyEvent(event)) { 3597 finishInputEvent(q, true); 3598 return; 3599 } 3600 3601 // Handle automatic focus changes. 3602 if (event.getAction() == KeyEvent.ACTION_DOWN) { 3603 int direction = 0; 3604 switch (event.getKeyCode()) { 3605 case KeyEvent.KEYCODE_DPAD_LEFT: 3606 if (event.hasNoModifiers()) { 3607 direction = View.FOCUS_LEFT; 3608 } 3609 break; 3610 case KeyEvent.KEYCODE_DPAD_RIGHT: 3611 if (event.hasNoModifiers()) { 3612 direction = View.FOCUS_RIGHT; 3613 } 3614 break; 3615 case KeyEvent.KEYCODE_DPAD_UP: 3616 if (event.hasNoModifiers()) { 3617 direction = View.FOCUS_UP; 3618 } 3619 break; 3620 case KeyEvent.KEYCODE_DPAD_DOWN: 3621 if (event.hasNoModifiers()) { 3622 direction = View.FOCUS_DOWN; 3623 } 3624 break; 3625 case KeyEvent.KEYCODE_TAB: 3626 if (event.hasNoModifiers()) { 3627 direction = View.FOCUS_FORWARD; 3628 } else if (event.hasModifiers(KeyEvent.META_SHIFT_ON)) { 3629 direction = View.FOCUS_BACKWARD; 3630 } 3631 break; 3632 } 3633 if (direction != 0) { 3634 View focused = mView.findFocus(); 3635 if (focused != null) { 3636 View v = focused.focusSearch(direction); 3637 if (v != null && v != focused) { 3638 // do the math the get the interesting rect 3639 // of previous focused into the coord system of 3640 // newly focused view 3641 focused.getFocusedRect(mTempRect); 3642 if (mView instanceof ViewGroup) { 3643 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 3644 focused, mTempRect); 3645 ((ViewGroup) mView).offsetRectIntoDescendantCoords( 3646 v, mTempRect); 3647 } 3648 if (v.requestFocus(direction, mTempRect)) { 3649 playSoundEffect(SoundEffectConstants 3650 .getContantForFocusDirection(direction)); 3651 finishInputEvent(q, true); 3652 return; 3653 } 3654 } 3655 3656 // Give the focused view a last chance to handle the dpad key. 3657 if (mView.dispatchUnhandledMove(focused, direction)) { 3658 finishInputEvent(q, true); 3659 return; 3660 } 3661 } 3662 } 3663 } 3664 3665 // Key was unhandled. 3666 finishInputEvent(q, false); 3667 } 3668 3669 /* drag/drop */ 3670 void setLocalDragState(Object obj) { 3671 mLocalDragState = obj; 3672 } 3673 3674 private void handleDragEvent(DragEvent event) { 3675 // From the root, only drag start/end/location are dispatched. entered/exited 3676 // are determined and dispatched by the viewgroup hierarchy, who then report 3677 // that back here for ultimate reporting back to the framework. 3678 if (mView != null && mAdded) { 3679 final int what = event.mAction; 3680 3681 if (what == DragEvent.ACTION_DRAG_EXITED) { 3682 // A direct EXITED event means that the window manager knows we've just crossed 3683 // a window boundary, so the current drag target within this one must have 3684 // just been exited. Send it the usual notifications and then we're done 3685 // for now. 3686 mView.dispatchDragEvent(event); 3687 } else { 3688 // Cache the drag description when the operation starts, then fill it in 3689 // on subsequent calls as a convenience 3690 if (what == DragEvent.ACTION_DRAG_STARTED) { 3691 mCurrentDragView = null; // Start the current-recipient tracking 3692 mDragDescription = event.mClipDescription; 3693 } else { 3694 event.mClipDescription = mDragDescription; 3695 } 3696 3697 // For events with a [screen] location, translate into window coordinates 3698 if ((what == DragEvent.ACTION_DRAG_LOCATION) || (what == DragEvent.ACTION_DROP)) { 3699 mDragPoint.set(event.mX, event.mY); 3700 if (mTranslator != null) { 3701 mTranslator.translatePointInScreenToAppWindow(mDragPoint); 3702 } 3703 3704 if (mCurScrollY != 0) { 3705 mDragPoint.offset(0, mCurScrollY); 3706 } 3707 3708 event.mX = mDragPoint.x; 3709 event.mY = mDragPoint.y; 3710 } 3711 3712 // Remember who the current drag target is pre-dispatch 3713 final View prevDragView = mCurrentDragView; 3714 3715 // Now dispatch the drag/drop event 3716 boolean result = mView.dispatchDragEvent(event); 3717 3718 // If we changed apparent drag target, tell the OS about it 3719 if (prevDragView != mCurrentDragView) { 3720 try { 3721 if (prevDragView != null) { 3722 sWindowSession.dragRecipientExited(mWindow); 3723 } 3724 if (mCurrentDragView != null) { 3725 sWindowSession.dragRecipientEntered(mWindow); 3726 } 3727 } catch (RemoteException e) { 3728 Slog.e(TAG, "Unable to note drag target change"); 3729 } 3730 } 3731 3732 // Report the drop result when we're done 3733 if (what == DragEvent.ACTION_DROP) { 3734 mDragDescription = null; 3735 try { 3736 Log.i(TAG, "Reporting drop result: " + result); 3737 sWindowSession.reportDropResult(mWindow, result); 3738 } catch (RemoteException e) { 3739 Log.e(TAG, "Unable to report drop result"); 3740 } 3741 } 3742 3743 // When the drag operation ends, release any local state object 3744 // that may have been in use 3745 if (what == DragEvent.ACTION_DRAG_ENDED) { 3746 setLocalDragState(null); 3747 } 3748 } 3749 } 3750 event.recycle(); 3751 } 3752 3753 public void handleDispatchSystemUiVisibilityChanged(SystemUiVisibilityInfo args) { 3754 if (mSeq != args.seq) { 3755 // The sequence has changed, so we need to update our value and make 3756 // sure to do a traversal afterward so the window manager is given our 3757 // most recent data. 3758 mSeq = args.seq; 3759 mAttachInfo.mForceReportNewAttributes = true; 3760 scheduleTraversals(); 3761 } 3762 if (mView == null) return; 3763 if (args.localChanges != 0) { 3764 mView.updateLocalSystemUiVisibility(args.localValue, args.localChanges); 3765 } 3766 if (mAttachInfo != null) { 3767 int visibility = args.globalVisibility&View.SYSTEM_UI_CLEARABLE_FLAGS; 3768 if (visibility != mAttachInfo.mGlobalSystemUiVisibility) { 3769 mAttachInfo.mGlobalSystemUiVisibility = visibility; 3770 mView.dispatchSystemUiVisibilityChanged(visibility); 3771 } 3772 } 3773 } 3774 3775 public void handleDispatchDoneAnimating() { 3776 if (mWindowsAnimating) { 3777 mWindowsAnimating = false; 3778 if (!mDirty.isEmpty() || mIsAnimating) { 3779 scheduleTraversals(); 3780 } 3781 } 3782 } 3783 3784 public void getLastTouchPoint(Point outLocation) { 3785 outLocation.x = (int) mLastTouchPoint.x; 3786 outLocation.y = (int) mLastTouchPoint.y; 3787 } 3788 3789 public void setDragFocus(View newDragTarget) { 3790 if (mCurrentDragView != newDragTarget) { 3791 mCurrentDragView = newDragTarget; 3792 } 3793 } 3794 3795 private AudioManager getAudioManager() { 3796 if (mView == null) { 3797 throw new IllegalStateException("getAudioManager called when there is no mView"); 3798 } 3799 if (mAudioManager == null) { 3800 mAudioManager = (AudioManager) mView.getContext().getSystemService(Context.AUDIO_SERVICE); 3801 } 3802 return mAudioManager; 3803 } 3804 3805 public AccessibilityInteractionController getAccessibilityInteractionController() { 3806 if (mView == null) { 3807 throw new IllegalStateException("getAccessibilityInteractionController" 3808 + " called when there is no mView"); 3809 } 3810 if (mAccessibilityInteractionController == null) { 3811 mAccessibilityInteractionController = new AccessibilityInteractionController(this); 3812 } 3813 return mAccessibilityInteractionController; 3814 } 3815 3816 private int relayoutWindow(WindowManager.LayoutParams params, int viewVisibility, 3817 boolean insetsPending) throws RemoteException { 3818 3819 float appScale = mAttachInfo.mApplicationScale; 3820 boolean restore = false; 3821 if (params != null && mTranslator != null) { 3822 restore = true; 3823 params.backup(); 3824 mTranslator.translateWindowLayout(params); 3825 } 3826 if (params != null) { 3827 if (DBG) Log.d(TAG, "WindowLayout in layoutWindow:" + params); 3828 } 3829 mPendingConfiguration.seq = 0; 3830 //Log.d(TAG, ">>>>>> CALLING relayout"); 3831 if (params != null && mOrigWindowType != params.type) { 3832 // For compatibility with old apps, don't crash here. 3833 if (mTargetSdkVersion < android.os.Build.VERSION_CODES.ICE_CREAM_SANDWICH) { 3834 Slog.w(TAG, "Window type can not be changed after " 3835 + "the window is added; ignoring change of " + mView); 3836 params.type = mOrigWindowType; 3837 } 3838 } 3839 int relayoutResult = sWindowSession.relayout( 3840 mWindow, mSeq, params, 3841 (int) (mView.getMeasuredWidth() * appScale + 0.5f), 3842 (int) (mView.getMeasuredHeight() * appScale + 0.5f), 3843 viewVisibility, insetsPending ? WindowManagerImpl.RELAYOUT_INSETS_PENDING : 0, 3844 mWinFrame, mPendingContentInsets, mPendingVisibleInsets, 3845 mPendingConfiguration, mSurface); 3846 //Log.d(TAG, "<<<<<< BACK FROM relayout"); 3847 if (restore) { 3848 params.restore(); 3849 } 3850 3851 if (mTranslator != null) { 3852 mTranslator.translateRectInScreenToAppWinFrame(mWinFrame); 3853 mTranslator.translateRectInScreenToAppWindow(mPendingContentInsets); 3854 mTranslator.translateRectInScreenToAppWindow(mPendingVisibleInsets); 3855 } 3856 return relayoutResult; 3857 } 3858 3859 /** 3860 * {@inheritDoc} 3861 */ 3862 public void playSoundEffect(int effectId) { 3863 checkThread(); 3864 3865 try { 3866 final AudioManager audioManager = getAudioManager(); 3867 3868 switch (effectId) { 3869 case SoundEffectConstants.CLICK: 3870 audioManager.playSoundEffect(AudioManager.FX_KEY_CLICK); 3871 return; 3872 case SoundEffectConstants.NAVIGATION_DOWN: 3873 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_DOWN); 3874 return; 3875 case SoundEffectConstants.NAVIGATION_LEFT: 3876 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_LEFT); 3877 return; 3878 case SoundEffectConstants.NAVIGATION_RIGHT: 3879 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_RIGHT); 3880 return; 3881 case SoundEffectConstants.NAVIGATION_UP: 3882 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_UP); 3883 return; 3884 default: 3885 throw new IllegalArgumentException("unknown effect id " + effectId + 3886 " not defined in " + SoundEffectConstants.class.getCanonicalName()); 3887 } 3888 } catch (IllegalStateException e) { 3889 // Exception thrown by getAudioManager() when mView is null 3890 Log.e(TAG, "FATAL EXCEPTION when attempting to play sound effect: " + e); 3891 e.printStackTrace(); 3892 } 3893 } 3894 3895 /** 3896 * {@inheritDoc} 3897 */ 3898 public boolean performHapticFeedback(int effectId, boolean always) { 3899 try { 3900 return sWindowSession.performHapticFeedback(mWindow, effectId, always); 3901 } catch (RemoteException e) { 3902 return false; 3903 } 3904 } 3905 3906 /** 3907 * {@inheritDoc} 3908 */ 3909 public View focusSearch(View focused, int direction) { 3910 checkThread(); 3911 if (!(mView instanceof ViewGroup)) { 3912 return null; 3913 } 3914 return FocusFinder.getInstance().findNextFocus((ViewGroup) mView, focused, direction); 3915 } 3916 3917 public void debug() { 3918 mView.debug(); 3919 } 3920 3921 public void dumpGfxInfo(int[] info) { 3922 if (mView != null) { 3923 getGfxInfo(mView, info); 3924 } else { 3925 info[0] = info[1] = 0; 3926 } 3927 } 3928 3929 private static void getGfxInfo(View view, int[] info) { 3930 DisplayList displayList = view.mDisplayList; 3931 info[0]++; 3932 if (displayList != null) { 3933 info[1] += displayList.getSize(); 3934 } 3935 3936 if (view instanceof ViewGroup) { 3937 ViewGroup group = (ViewGroup) view; 3938 3939 int count = group.getChildCount(); 3940 for (int i = 0; i < count; i++) { 3941 getGfxInfo(group.getChildAt(i), info); 3942 } 3943 } 3944 } 3945 3946 public void die(boolean immediate) { 3947 if (immediate) { 3948 doDie(); 3949 } else { 3950 if (!mIsDrawing) { 3951 destroyHardwareRenderer(); 3952 } else { 3953 Log.e(TAG, "Attempting to destroy the window while drawing!\n" + 3954 " window=" + this + ", title=" + mWindowAttributes.getTitle()); 3955 } 3956 mHandler.sendEmptyMessage(MSG_DIE); 3957 } 3958 } 3959 3960 void doDie() { 3961 checkThread(); 3962 if (LOCAL_LOGV) Log.v(TAG, "DIE in " + this + " of " + mSurface); 3963 synchronized (this) { 3964 if (mAdded) { 3965 dispatchDetachedFromWindow(); 3966 } 3967 3968 if (mAdded && !mFirst) { 3969 destroyHardwareRenderer(); 3970 3971 if (mView != null) { 3972 int viewVisibility = mView.getVisibility(); 3973 boolean viewVisibilityChanged = mViewVisibility != viewVisibility; 3974 if (mWindowAttributesChanged || viewVisibilityChanged) { 3975 // If layout params have been changed, first give them 3976 // to the window manager to make sure it has the correct 3977 // animation info. 3978 try { 3979 if ((relayoutWindow(mWindowAttributes, viewVisibility, false) 3980 & WindowManagerImpl.RELAYOUT_RES_FIRST_TIME) != 0) { 3981 sWindowSession.finishDrawing(mWindow); 3982 } 3983 } catch (RemoteException e) { 3984 } 3985 } 3986 3987 mSurface.release(); 3988 } 3989 } 3990 3991 mAdded = false; 3992 } 3993 } 3994 3995 public void requestUpdateConfiguration(Configuration config) { 3996 Message msg = mHandler.obtainMessage(MSG_UPDATE_CONFIGURATION, config); 3997 mHandler.sendMessage(msg); 3998 } 3999 4000 public void loadSystemProperties() { 4001 boolean layout = SystemProperties.getBoolean( 4002 View.DEBUG_LAYOUT_PROPERTY, false); 4003 if (layout != mAttachInfo.mDebugLayout) { 4004 mAttachInfo.mDebugLayout = layout; 4005 if (!mHandler.hasMessages(MSG_INVALIDATE_WORLD)) { 4006 mHandler.sendEmptyMessageDelayed(MSG_INVALIDATE_WORLD, 200); 4007 } 4008 } 4009 } 4010 4011 private void destroyHardwareRenderer() { 4012 AttachInfo attachInfo = mAttachInfo; 4013 HardwareRenderer hardwareRenderer = attachInfo.mHardwareRenderer; 4014 4015 if (hardwareRenderer != null) { 4016 if (mView != null) { 4017 hardwareRenderer.destroyHardwareResources(mView); 4018 } 4019 hardwareRenderer.destroy(true); 4020 hardwareRenderer.setRequested(false); 4021 4022 attachInfo.mHardwareRenderer = null; 4023 attachInfo.mHardwareAccelerated = false; 4024 } 4025 } 4026 4027 void dispatchImeFinishedEvent(int seq, boolean handled) { 4028 Message msg = mHandler.obtainMessage(MSG_IME_FINISHED_EVENT); 4029 msg.arg1 = seq; 4030 msg.arg2 = handled ? 1 : 0; 4031 msg.setAsynchronous(true); 4032 mHandler.sendMessage(msg); 4033 } 4034 4035 public void dispatchFinishInputConnection(InputConnection connection) { 4036 Message msg = mHandler.obtainMessage(MSG_FINISH_INPUT_CONNECTION, connection); 4037 mHandler.sendMessage(msg); 4038 } 4039 4040 public void dispatchResized(int w, int h, Rect contentInsets, 4041 Rect visibleInsets, boolean reportDraw, Configuration newConfig) { 4042 if (DEBUG_LAYOUT) Log.v(TAG, "Resizing " + this + ": w=" + w 4043 + " h=" + h + " contentInsets=" + contentInsets.toShortString() 4044 + " visibleInsets=" + visibleInsets.toShortString() 4045 + " reportDraw=" + reportDraw); 4046 Message msg = mHandler.obtainMessage(reportDraw ? MSG_RESIZED_REPORT :MSG_RESIZED); 4047 if (mTranslator != null) { 4048 mTranslator.translateRectInScreenToAppWindow(contentInsets); 4049 mTranslator.translateRectInScreenToAppWindow(visibleInsets); 4050 w *= mTranslator.applicationInvertedScale; 4051 h *= mTranslator.applicationInvertedScale; 4052 } 4053 msg.arg1 = w; 4054 msg.arg2 = h; 4055 ResizedInfo ri = new ResizedInfo(); 4056 ri.contentInsets = new Rect(contentInsets); 4057 ri.visibleInsets = new Rect(visibleInsets); 4058 ri.newConfig = newConfig; 4059 msg.obj = ri; 4060 mHandler.sendMessage(msg); 4061 } 4062 4063 /** 4064 * Represents a pending input event that is waiting in a queue. 4065 * 4066 * Input events are processed in serial order by the timestamp specified by 4067 * {@link InputEvent#getEventTimeNano()}. In general, the input dispatcher delivers 4068 * one input event to the application at a time and waits for the application 4069 * to finish handling it before delivering the next one. 4070 * 4071 * However, because the application or IME can synthesize and inject multiple 4072 * key events at a time without going through the input dispatcher, we end up 4073 * needing a queue on the application's side. 4074 */ 4075 private static final class QueuedInputEvent { 4076 public static final int FLAG_DELIVER_POST_IME = 1; 4077 4078 public QueuedInputEvent mNext; 4079 4080 public InputEvent mEvent; 4081 public InputEventReceiver mReceiver; 4082 public int mFlags; 4083 } 4084 4085 private QueuedInputEvent obtainQueuedInputEvent(InputEvent event, 4086 InputEventReceiver receiver, int flags) { 4087 QueuedInputEvent q = mQueuedInputEventPool; 4088 if (q != null) { 4089 mQueuedInputEventPoolSize -= 1; 4090 mQueuedInputEventPool = q.mNext; 4091 q.mNext = null; 4092 } else { 4093 q = new QueuedInputEvent(); 4094 } 4095 4096 q.mEvent = event; 4097 q.mReceiver = receiver; 4098 q.mFlags = flags; 4099 return q; 4100 } 4101 4102 private void recycleQueuedInputEvent(QueuedInputEvent q) { 4103 q.mEvent = null; 4104 q.mReceiver = null; 4105 4106 if (mQueuedInputEventPoolSize < MAX_QUEUED_INPUT_EVENT_POOL_SIZE) { 4107 mQueuedInputEventPoolSize += 1; 4108 q.mNext = mQueuedInputEventPool; 4109 mQueuedInputEventPool = q; 4110 } 4111 } 4112 4113 void enqueueInputEvent(InputEvent event) { 4114 enqueueInputEvent(event, null, 0, false); 4115 } 4116 4117 void enqueueInputEvent(InputEvent event, 4118 InputEventReceiver receiver, int flags, boolean processImmediately) { 4119 QueuedInputEvent q = obtainQueuedInputEvent(event, receiver, flags); 4120 4121 // Always enqueue the input event in order, regardless of its time stamp. 4122 // We do this because the application or the IME may inject key events 4123 // in response to touch events and we want to ensure that the injected keys 4124 // are processed in the order they were received and we cannot trust that 4125 // the time stamp of injected events are monotonic. 4126 QueuedInputEvent last = mFirstPendingInputEvent; 4127 if (last == null) { 4128 mFirstPendingInputEvent = q; 4129 } else { 4130 while (last.mNext != null) { 4131 last = last.mNext; 4132 } 4133 last.mNext = q; 4134 } 4135 4136 if (processImmediately) { 4137 doProcessInputEvents(); 4138 } else { 4139 scheduleProcessInputEvents(); 4140 } 4141 } 4142 4143 private void scheduleProcessInputEvents() { 4144 if (!mProcessInputEventsScheduled) { 4145 mProcessInputEventsScheduled = true; 4146 Message msg = mHandler.obtainMessage(MSG_PROCESS_INPUT_EVENTS); 4147 msg.setAsynchronous(true); 4148 mHandler.sendMessage(msg); 4149 } 4150 } 4151 4152 void doProcessInputEvents() { 4153 while (mCurrentInputEvent == null && mFirstPendingInputEvent != null) { 4154 QueuedInputEvent q = mFirstPendingInputEvent; 4155 mFirstPendingInputEvent = q.mNext; 4156 q.mNext = null; 4157 mCurrentInputEvent = q; 4158 deliverInputEvent(q); 4159 } 4160 4161 // We are done processing all input events that we can process right now 4162 // so we can clear the pending flag immediately. 4163 if (mProcessInputEventsScheduled) { 4164 mProcessInputEventsScheduled = false; 4165 mHandler.removeMessages(MSG_PROCESS_INPUT_EVENTS); 4166 } 4167 } 4168 4169 private void finishInputEvent(QueuedInputEvent q, boolean handled) { 4170 if (q != mCurrentInputEvent) { 4171 throw new IllegalStateException("finished input event out of order"); 4172 } 4173 4174 if (q.mReceiver != null) { 4175 q.mReceiver.finishInputEvent(q.mEvent, handled); 4176 } else { 4177 q.mEvent.recycleIfNeededAfterDispatch(); 4178 } 4179 4180 recycleQueuedInputEvent(q); 4181 4182 mCurrentInputEvent = null; 4183 if (mFirstPendingInputEvent != null) { 4184 scheduleProcessInputEvents(); 4185 } 4186 } 4187 4188 void scheduleConsumeBatchedInput() { 4189 if (!mConsumeBatchedInputScheduled) { 4190 mConsumeBatchedInputScheduled = true; 4191 mChoreographer.postCallback(Choreographer.CALLBACK_INPUT, 4192 mConsumedBatchedInputRunnable, null); 4193 } 4194 } 4195 4196 void unscheduleConsumeBatchedInput() { 4197 if (mConsumeBatchedInputScheduled) { 4198 mConsumeBatchedInputScheduled = false; 4199 mChoreographer.removeCallbacks(Choreographer.CALLBACK_INPUT, 4200 mConsumedBatchedInputRunnable, null); 4201 } 4202 } 4203 4204 void doConsumeBatchedInput(long frameTimeNanos) { 4205 if (mConsumeBatchedInputScheduled) { 4206 mConsumeBatchedInputScheduled = false; 4207 if (mInputEventReceiver != null) { 4208 mInputEventReceiver.consumeBatchedInputEvents(frameTimeNanos); 4209 } 4210 doProcessInputEvents(); 4211 } 4212 } 4213 4214 final class TraversalRunnable implements Runnable { 4215 @Override 4216 public void run() { 4217 doTraversal(); 4218 } 4219 } 4220 final TraversalRunnable mTraversalRunnable = new TraversalRunnable(); 4221 4222 final class WindowInputEventReceiver extends InputEventReceiver { 4223 public WindowInputEventReceiver(InputChannel inputChannel, Looper looper) { 4224 super(inputChannel, looper); 4225 } 4226 4227 @Override 4228 public void onInputEvent(InputEvent event) { 4229 enqueueInputEvent(event, this, 0, true); 4230 } 4231 4232 @Override 4233 public void onBatchedInputEventPending() { 4234 scheduleConsumeBatchedInput(); 4235 } 4236 4237 @Override 4238 public void dispose() { 4239 unscheduleConsumeBatchedInput(); 4240 super.dispose(); 4241 } 4242 } 4243 WindowInputEventReceiver mInputEventReceiver; 4244 4245 final class ConsumeBatchedInputRunnable implements Runnable { 4246 @Override 4247 public void run() { 4248 doConsumeBatchedInput(mChoreographer.getFrameTimeNanos()); 4249 } 4250 } 4251 final ConsumeBatchedInputRunnable mConsumedBatchedInputRunnable = 4252 new ConsumeBatchedInputRunnable(); 4253 boolean mConsumeBatchedInputScheduled; 4254 4255 final class InvalidateOnAnimationRunnable implements Runnable { 4256 private boolean mPosted; 4257 private ArrayList<View> mViews = new ArrayList<View>(); 4258 private ArrayList<AttachInfo.InvalidateInfo> mViewRects = 4259 new ArrayList<AttachInfo.InvalidateInfo>(); 4260 private View[] mTempViews; 4261 private AttachInfo.InvalidateInfo[] mTempViewRects; 4262 4263 public void addView(View view) { 4264 synchronized (this) { 4265 mViews.add(view); 4266 postIfNeededLocked(); 4267 } 4268 } 4269 4270 public void addViewRect(AttachInfo.InvalidateInfo info) { 4271 synchronized (this) { 4272 mViewRects.add(info); 4273 postIfNeededLocked(); 4274 } 4275 } 4276 4277 public void removeView(View view) { 4278 synchronized (this) { 4279 mViews.remove(view); 4280 4281 for (int i = mViewRects.size(); i-- > 0; ) { 4282 AttachInfo.InvalidateInfo info = mViewRects.get(i); 4283 if (info.target == view) { 4284 mViewRects.remove(i); 4285 info.release(); 4286 } 4287 } 4288 4289 if (mPosted && mViews.isEmpty() && mViewRects.isEmpty()) { 4290 mChoreographer.removeCallbacks(Choreographer.CALLBACK_ANIMATION, this, null); 4291 mPosted = false; 4292 } 4293 } 4294 } 4295 4296 @Override 4297 public void run() { 4298 final int viewCount; 4299 final int viewRectCount; 4300 synchronized (this) { 4301 mPosted = false; 4302 4303 viewCount = mViews.size(); 4304 if (viewCount != 0) { 4305 mTempViews = mViews.toArray(mTempViews != null 4306 ? mTempViews : new View[viewCount]); 4307 mViews.clear(); 4308 } 4309 4310 viewRectCount = mViewRects.size(); 4311 if (viewRectCount != 0) { 4312 mTempViewRects = mViewRects.toArray(mTempViewRects != null 4313 ? mTempViewRects : new AttachInfo.InvalidateInfo[viewRectCount]); 4314 mViewRects.clear(); 4315 } 4316 } 4317 4318 for (int i = 0; i < viewCount; i++) { 4319 mTempViews[i].invalidate(); 4320 mTempViews[i] = null; 4321 } 4322 4323 for (int i = 0; i < viewRectCount; i++) { 4324 final View.AttachInfo.InvalidateInfo info = mTempViewRects[i]; 4325 info.target.invalidate(info.left, info.top, info.right, info.bottom); 4326 info.release(); 4327 } 4328 } 4329 4330 private void postIfNeededLocked() { 4331 if (!mPosted) { 4332 mChoreographer.postCallback(Choreographer.CALLBACK_ANIMATION, this, null); 4333 mPosted = true; 4334 } 4335 } 4336 } 4337 final InvalidateOnAnimationRunnable mInvalidateOnAnimationRunnable = 4338 new InvalidateOnAnimationRunnable(); 4339 4340 public void dispatchInvalidateDelayed(View view, long delayMilliseconds) { 4341 Message msg = mHandler.obtainMessage(MSG_INVALIDATE, view); 4342 mHandler.sendMessageDelayed(msg, delayMilliseconds); 4343 } 4344 4345 public void dispatchInvalidateRectDelayed(AttachInfo.InvalidateInfo info, 4346 long delayMilliseconds) { 4347 final Message msg = mHandler.obtainMessage(MSG_INVALIDATE_RECT, info); 4348 mHandler.sendMessageDelayed(msg, delayMilliseconds); 4349 } 4350 4351 public void dispatchInvalidateOnAnimation(View view) { 4352 mInvalidateOnAnimationRunnable.addView(view); 4353 } 4354 4355 public void dispatchInvalidateRectOnAnimation(AttachInfo.InvalidateInfo info) { 4356 mInvalidateOnAnimationRunnable.addViewRect(info); 4357 } 4358 4359 public void enqueueDisplayList(DisplayList displayList) { 4360 mDisplayLists.add(displayList); 4361 4362 mHandler.removeMessages(MSG_INVALIDATE_DISPLAY_LIST); 4363 Message msg = mHandler.obtainMessage(MSG_INVALIDATE_DISPLAY_LIST); 4364 mHandler.sendMessage(msg); 4365 } 4366 4367 public void dequeueDisplayList(DisplayList displayList) { 4368 if (mDisplayLists.remove(displayList)) { 4369 displayList.invalidate(); 4370 if (mDisplayLists.size() == 0) { 4371 mHandler.removeMessages(MSG_INVALIDATE_DISPLAY_LIST); 4372 } 4373 } 4374 } 4375 4376 public void cancelInvalidate(View view) { 4377 mHandler.removeMessages(MSG_INVALIDATE, view); 4378 // fixme: might leak the AttachInfo.InvalidateInfo objects instead of returning 4379 // them to the pool 4380 mHandler.removeMessages(MSG_INVALIDATE_RECT, view); 4381 mInvalidateOnAnimationRunnable.removeView(view); 4382 } 4383 4384 public void dispatchKey(KeyEvent event) { 4385 Message msg = mHandler.obtainMessage(MSG_DISPATCH_KEY, event); 4386 msg.setAsynchronous(true); 4387 mHandler.sendMessage(msg); 4388 } 4389 4390 public void dispatchKeyFromIme(KeyEvent event) { 4391 Message msg = mHandler.obtainMessage(MSG_DISPATCH_KEY_FROM_IME, event); 4392 msg.setAsynchronous(true); 4393 mHandler.sendMessage(msg); 4394 } 4395 4396 public void dispatchUnhandledKey(KeyEvent event) { 4397 if ((event.getFlags() & KeyEvent.FLAG_FALLBACK) == 0) { 4398 final KeyCharacterMap kcm = event.getKeyCharacterMap(); 4399 final int keyCode = event.getKeyCode(); 4400 final int metaState = event.getMetaState(); 4401 4402 // Check for fallback actions specified by the key character map. 4403 KeyCharacterMap.FallbackAction fallbackAction = 4404 kcm.getFallbackAction(keyCode, metaState); 4405 if (fallbackAction != null) { 4406 final int flags = event.getFlags() | KeyEvent.FLAG_FALLBACK; 4407 KeyEvent fallbackEvent = KeyEvent.obtain( 4408 event.getDownTime(), event.getEventTime(), 4409 event.getAction(), fallbackAction.keyCode, 4410 event.getRepeatCount(), fallbackAction.metaState, 4411 event.getDeviceId(), event.getScanCode(), 4412 flags, event.getSource(), null); 4413 fallbackAction.recycle(); 4414 4415 dispatchKey(fallbackEvent); 4416 } 4417 } 4418 } 4419 4420 public void dispatchAppVisibility(boolean visible) { 4421 Message msg = mHandler.obtainMessage(MSG_DISPATCH_APP_VISIBILITY); 4422 msg.arg1 = visible ? 1 : 0; 4423 mHandler.sendMessage(msg); 4424 } 4425 4426 public void dispatchScreenStateChange(boolean on) { 4427 Message msg = mHandler.obtainMessage(MSG_DISPATCH_SCREEN_STATE); 4428 msg.arg1 = on ? 1 : 0; 4429 mHandler.sendMessage(msg); 4430 } 4431 4432 public void dispatchGetNewSurface() { 4433 Message msg = mHandler.obtainMessage(MSG_DISPATCH_GET_NEW_SURFACE); 4434 mHandler.sendMessage(msg); 4435 } 4436 4437 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 4438 Message msg = Message.obtain(); 4439 msg.what = MSG_WINDOW_FOCUS_CHANGED; 4440 msg.arg1 = hasFocus ? 1 : 0; 4441 msg.arg2 = inTouchMode ? 1 : 0; 4442 mHandler.sendMessage(msg); 4443 } 4444 4445 public void dispatchCloseSystemDialogs(String reason) { 4446 Message msg = Message.obtain(); 4447 msg.what = MSG_CLOSE_SYSTEM_DIALOGS; 4448 msg.obj = reason; 4449 mHandler.sendMessage(msg); 4450 } 4451 4452 public void dispatchDragEvent(DragEvent event) { 4453 final int what; 4454 if (event.getAction() == DragEvent.ACTION_DRAG_LOCATION) { 4455 what = MSG_DISPATCH_DRAG_LOCATION_EVENT; 4456 mHandler.removeMessages(what); 4457 } else { 4458 what = MSG_DISPATCH_DRAG_EVENT; 4459 } 4460 Message msg = mHandler.obtainMessage(what, event); 4461 mHandler.sendMessage(msg); 4462 } 4463 4464 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 4465 int localValue, int localChanges) { 4466 SystemUiVisibilityInfo args = new SystemUiVisibilityInfo(); 4467 args.seq = seq; 4468 args.globalVisibility = globalVisibility; 4469 args.localValue = localValue; 4470 args.localChanges = localChanges; 4471 mHandler.sendMessage(mHandler.obtainMessage(MSG_DISPATCH_SYSTEM_UI_VISIBILITY, args)); 4472 } 4473 4474 public void dispatchDoneAnimating() { 4475 mHandler.sendEmptyMessage(MSG_DISPATCH_DONE_ANIMATING); 4476 } 4477 4478 public void dispatchCheckFocus() { 4479 if (!mHandler.hasMessages(MSG_CHECK_FOCUS)) { 4480 // This will result in a call to checkFocus() below. 4481 mHandler.sendEmptyMessage(MSG_CHECK_FOCUS); 4482 } 4483 } 4484 4485 /** 4486 * Post a callback to send a 4487 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 4488 * This event is send at most once every 4489 * {@link ViewConfiguration#getSendRecurringAccessibilityEventsInterval()}. 4490 */ 4491 private void postSendWindowContentChangedCallback(View source) { 4492 if (mSendWindowContentChangedAccessibilityEvent == null) { 4493 mSendWindowContentChangedAccessibilityEvent = 4494 new SendWindowContentChangedAccessibilityEvent(); 4495 } 4496 View oldSource = mSendWindowContentChangedAccessibilityEvent.mSource; 4497 if (oldSource == null) { 4498 mSendWindowContentChangedAccessibilityEvent.mSource = source; 4499 mHandler.postDelayed(mSendWindowContentChangedAccessibilityEvent, 4500 ViewConfiguration.getSendRecurringAccessibilityEventsInterval()); 4501 } else { 4502 mSendWindowContentChangedAccessibilityEvent.mSource = 4503 getCommonPredecessor(oldSource, source); 4504 } 4505 } 4506 4507 /** 4508 * Remove a posted callback to send a 4509 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 4510 */ 4511 private void removeSendWindowContentChangedCallback() { 4512 if (mSendWindowContentChangedAccessibilityEvent != null) { 4513 mHandler.removeCallbacks(mSendWindowContentChangedAccessibilityEvent); 4514 } 4515 } 4516 4517 public boolean showContextMenuForChild(View originalView) { 4518 return false; 4519 } 4520 4521 public ActionMode startActionModeForChild(View originalView, ActionMode.Callback callback) { 4522 return null; 4523 } 4524 4525 public void createContextMenu(ContextMenu menu) { 4526 } 4527 4528 public void childDrawableStateChanged(View child) { 4529 } 4530 4531 public boolean requestSendAccessibilityEvent(View child, AccessibilityEvent event) { 4532 if (mView == null) { 4533 return false; 4534 } 4535 // Watch for accessibility focus change events from virtual nodes 4536 // to keep track of accessibility focus being on a virtual node. 4537 final int eventType = event.getEventType(); 4538 switch (eventType) { 4539 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUSED: { 4540 final long sourceId = event.getSourceNodeId(); 4541 // If the event is not from a virtual node we are not interested. 4542 final int virtualViewId = AccessibilityNodeInfo.getVirtualDescendantId(sourceId); 4543 if (virtualViewId == AccessibilityNodeInfo.UNDEFINED) { 4544 break; 4545 } 4546 final int realViewId = AccessibilityNodeInfo.getAccessibilityViewId(sourceId); 4547 View focusHost = mView.findViewByAccessibilityId(realViewId); 4548 setAccessibilityFocusedHost(focusHost); 4549 } break; 4550 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUS_CLEARED: { 4551 final long sourceId = event.getSourceNodeId(); 4552 // If the event is not from a virtual node we are not interested. 4553 final int virtualViewId = AccessibilityNodeInfo.getVirtualDescendantId(sourceId); 4554 if (virtualViewId == AccessibilityNodeInfo.UNDEFINED) { 4555 break; 4556 } 4557 setAccessibilityFocusedHost(null); 4558 } break; 4559 } 4560 mAccessibilityManager.sendAccessibilityEvent(event); 4561 return true; 4562 } 4563 4564 @Override 4565 public void childAccessibilityStateChanged(View child) { 4566 postSendWindowContentChangedCallback(child); 4567 } 4568 4569 private View getCommonPredecessor(View first, View second) { 4570 if (mAttachInfo != null) { 4571 if (mTempHashSet == null) { 4572 mTempHashSet = new HashSet<View>(); 4573 } 4574 HashSet<View> seen = mTempHashSet; 4575 seen.clear(); 4576 View firstCurrent = first; 4577 while (firstCurrent != null) { 4578 seen.add(firstCurrent); 4579 ViewParent firstCurrentParent = firstCurrent.mParent; 4580 if (firstCurrentParent instanceof View) { 4581 firstCurrent = (View) firstCurrentParent; 4582 } else { 4583 firstCurrent = null; 4584 } 4585 } 4586 View secondCurrent = second; 4587 while (secondCurrent != null) { 4588 if (seen.contains(secondCurrent)) { 4589 seen.clear(); 4590 return secondCurrent; 4591 } 4592 ViewParent secondCurrentParent = secondCurrent.mParent; 4593 if (secondCurrentParent instanceof View) { 4594 secondCurrent = (View) secondCurrentParent; 4595 } else { 4596 secondCurrent = null; 4597 } 4598 } 4599 seen.clear(); 4600 } 4601 return null; 4602 } 4603 4604 void checkThread() { 4605 if (mThread != Thread.currentThread()) { 4606 throw new CalledFromWrongThreadException( 4607 "Only the original thread that created a view hierarchy can touch its views."); 4608 } 4609 } 4610 4611 public void requestDisallowInterceptTouchEvent(boolean disallowIntercept) { 4612 // ViewAncestor never intercepts touch event, so this can be a no-op 4613 } 4614 4615 public boolean requestChildRectangleOnScreen(View child, Rect rectangle, 4616 boolean immediate) { 4617 return scrollToRectOrFocus(rectangle, immediate); 4618 } 4619 4620 public void childHasTransientStateChanged(View child, boolean hasTransientState) { 4621 // Do nothing. 4622 } 4623 4624 class TakenSurfaceHolder extends BaseSurfaceHolder { 4625 @Override 4626 public boolean onAllowLockCanvas() { 4627 return mDrawingAllowed; 4628 } 4629 4630 @Override 4631 public void onRelayoutContainer() { 4632 // Not currently interesting -- from changing between fixed and layout size. 4633 } 4634 4635 public void setFormat(int format) { 4636 ((RootViewSurfaceTaker)mView).setSurfaceFormat(format); 4637 } 4638 4639 public void setType(int type) { 4640 ((RootViewSurfaceTaker)mView).setSurfaceType(type); 4641 } 4642 4643 @Override 4644 public void onUpdateSurface() { 4645 // We take care of format and type changes on our own. 4646 throw new IllegalStateException("Shouldn't be here"); 4647 } 4648 4649 public boolean isCreating() { 4650 return mIsCreating; 4651 } 4652 4653 @Override 4654 public void setFixedSize(int width, int height) { 4655 throw new UnsupportedOperationException( 4656 "Currently only support sizing from layout"); 4657 } 4658 4659 public void setKeepScreenOn(boolean screenOn) { 4660 ((RootViewSurfaceTaker)mView).setSurfaceKeepScreenOn(screenOn); 4661 } 4662 } 4663 4664 static class InputMethodCallback extends IInputMethodCallback.Stub { 4665 private WeakReference<ViewRootImpl> mViewAncestor; 4666 4667 public InputMethodCallback(ViewRootImpl viewAncestor) { 4668 mViewAncestor = new WeakReference<ViewRootImpl>(viewAncestor); 4669 } 4670 4671 public void finishedEvent(int seq, boolean handled) { 4672 final ViewRootImpl viewAncestor = mViewAncestor.get(); 4673 if (viewAncestor != null) { 4674 viewAncestor.dispatchImeFinishedEvent(seq, handled); 4675 } 4676 } 4677 4678 public void sessionCreated(IInputMethodSession session) { 4679 // Stub -- not for use in the client. 4680 } 4681 } 4682 4683 static class W extends IWindow.Stub { 4684 private final WeakReference<ViewRootImpl> mViewAncestor; 4685 4686 W(ViewRootImpl viewAncestor) { 4687 mViewAncestor = new WeakReference<ViewRootImpl>(viewAncestor); 4688 } 4689 4690 public void resized(int w, int h, Rect contentInsets, 4691 Rect visibleInsets, boolean reportDraw, Configuration newConfig) { 4692 final ViewRootImpl viewAncestor = mViewAncestor.get(); 4693 if (viewAncestor != null) { 4694 viewAncestor.dispatchResized(w, h, contentInsets, 4695 visibleInsets, reportDraw, newConfig); 4696 } 4697 } 4698 4699 public void dispatchAppVisibility(boolean visible) { 4700 final ViewRootImpl viewAncestor = mViewAncestor.get(); 4701 if (viewAncestor != null) { 4702 viewAncestor.dispatchAppVisibility(visible); 4703 } 4704 } 4705 4706 public void dispatchScreenState(boolean on) { 4707 final ViewRootImpl viewAncestor = mViewAncestor.get(); 4708 if (viewAncestor != null) { 4709 viewAncestor.dispatchScreenStateChange(on); 4710 } 4711 } 4712 4713 public void dispatchGetNewSurface() { 4714 final ViewRootImpl viewAncestor = mViewAncestor.get(); 4715 if (viewAncestor != null) { 4716 viewAncestor.dispatchGetNewSurface(); 4717 } 4718 } 4719 4720 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 4721 final ViewRootImpl viewAncestor = mViewAncestor.get(); 4722 if (viewAncestor != null) { 4723 viewAncestor.windowFocusChanged(hasFocus, inTouchMode); 4724 } 4725 } 4726 4727 private static int checkCallingPermission(String permission) { 4728 try { 4729 return ActivityManagerNative.getDefault().checkPermission( 4730 permission, Binder.getCallingPid(), Binder.getCallingUid()); 4731 } catch (RemoteException e) { 4732 return PackageManager.PERMISSION_DENIED; 4733 } 4734 } 4735 4736 public void executeCommand(String command, String parameters, ParcelFileDescriptor out) { 4737 final ViewRootImpl viewAncestor = mViewAncestor.get(); 4738 if (viewAncestor != null) { 4739 final View view = viewAncestor.mView; 4740 if (view != null) { 4741 if (checkCallingPermission(Manifest.permission.DUMP) != 4742 PackageManager.PERMISSION_GRANTED) { 4743 throw new SecurityException("Insufficient permissions to invoke" 4744 + " executeCommand() from pid=" + Binder.getCallingPid() 4745 + ", uid=" + Binder.getCallingUid()); 4746 } 4747 4748 OutputStream clientStream = null; 4749 try { 4750 clientStream = new ParcelFileDescriptor.AutoCloseOutputStream(out); 4751 ViewDebug.dispatchCommand(view, command, parameters, clientStream); 4752 } catch (IOException e) { 4753 e.printStackTrace(); 4754 } finally { 4755 if (clientStream != null) { 4756 try { 4757 clientStream.close(); 4758 } catch (IOException e) { 4759 e.printStackTrace(); 4760 } 4761 } 4762 } 4763 } 4764 } 4765 } 4766 4767 public void closeSystemDialogs(String reason) { 4768 final ViewRootImpl viewAncestor = mViewAncestor.get(); 4769 if (viewAncestor != null) { 4770 viewAncestor.dispatchCloseSystemDialogs(reason); 4771 } 4772 } 4773 4774 public void dispatchWallpaperOffsets(float x, float y, float xStep, float yStep, 4775 boolean sync) { 4776 if (sync) { 4777 try { 4778 sWindowSession.wallpaperOffsetsComplete(asBinder()); 4779 } catch (RemoteException e) { 4780 } 4781 } 4782 } 4783 4784 public void dispatchWallpaperCommand(String action, int x, int y, 4785 int z, Bundle extras, boolean sync) { 4786 if (sync) { 4787 try { 4788 sWindowSession.wallpaperCommandComplete(asBinder(), null); 4789 } catch (RemoteException e) { 4790 } 4791 } 4792 } 4793 4794 /* Drag/drop */ 4795 public void dispatchDragEvent(DragEvent event) { 4796 final ViewRootImpl viewAncestor = mViewAncestor.get(); 4797 if (viewAncestor != null) { 4798 viewAncestor.dispatchDragEvent(event); 4799 } 4800 } 4801 4802 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 4803 int localValue, int localChanges) { 4804 final ViewRootImpl viewAncestor = mViewAncestor.get(); 4805 if (viewAncestor != null) { 4806 viewAncestor.dispatchSystemUiVisibilityChanged(seq, globalVisibility, 4807 localValue, localChanges); 4808 } 4809 } 4810 4811 public void doneAnimating() { 4812 final ViewRootImpl viewAncestor = mViewAncestor.get(); 4813 if (viewAncestor != null) { 4814 viewAncestor.dispatchDoneAnimating(); 4815 } 4816 } 4817 } 4818 4819 /** 4820 * Maintains state information for a single trackball axis, generating 4821 * discrete (DPAD) movements based on raw trackball motion. 4822 */ 4823 static final class TrackballAxis { 4824 /** 4825 * The maximum amount of acceleration we will apply. 4826 */ 4827 static final float MAX_ACCELERATION = 20; 4828 4829 /** 4830 * The maximum amount of time (in milliseconds) between events in order 4831 * for us to consider the user to be doing fast trackball movements, 4832 * and thus apply an acceleration. 4833 */ 4834 static final long FAST_MOVE_TIME = 150; 4835 4836 /** 4837 * Scaling factor to the time (in milliseconds) between events to how 4838 * much to multiple/divide the current acceleration. When movement 4839 * is < FAST_MOVE_TIME this multiplies the acceleration; when > 4840 * FAST_MOVE_TIME it divides it. 4841 */ 4842 static final float ACCEL_MOVE_SCALING_FACTOR = (1.0f/40); 4843 4844 float position; 4845 float absPosition; 4846 float acceleration = 1; 4847 long lastMoveTime = 0; 4848 int step; 4849 int dir; 4850 int nonAccelMovement; 4851 4852 void reset(int _step) { 4853 position = 0; 4854 acceleration = 1; 4855 lastMoveTime = 0; 4856 step = _step; 4857 dir = 0; 4858 } 4859 4860 /** 4861 * Add trackball movement into the state. If the direction of movement 4862 * has been reversed, the state is reset before adding the 4863 * movement (so that you don't have to compensate for any previously 4864 * collected movement before see the result of the movement in the 4865 * new direction). 4866 * 4867 * @return Returns the absolute value of the amount of movement 4868 * collected so far. 4869 */ 4870 float collect(float off, long time, String axis) { 4871 long normTime; 4872 if (off > 0) { 4873 normTime = (long)(off * FAST_MOVE_TIME); 4874 if (dir < 0) { 4875 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to positive!"); 4876 position = 0; 4877 step = 0; 4878 acceleration = 1; 4879 lastMoveTime = 0; 4880 } 4881 dir = 1; 4882 } else if (off < 0) { 4883 normTime = (long)((-off) * FAST_MOVE_TIME); 4884 if (dir > 0) { 4885 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to negative!"); 4886 position = 0; 4887 step = 0; 4888 acceleration = 1; 4889 lastMoveTime = 0; 4890 } 4891 dir = -1; 4892 } else { 4893 normTime = 0; 4894 } 4895 4896 // The number of milliseconds between each movement that is 4897 // considered "normal" and will not result in any acceleration 4898 // or deceleration, scaled by the offset we have here. 4899 if (normTime > 0) { 4900 long delta = time - lastMoveTime; 4901 lastMoveTime = time; 4902 float acc = acceleration; 4903 if (delta < normTime) { 4904 // The user is scrolling rapidly, so increase acceleration. 4905 float scale = (normTime-delta) * ACCEL_MOVE_SCALING_FACTOR; 4906 if (scale > 1) acc *= scale; 4907 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " accelerate: off=" 4908 + off + " normTime=" + normTime + " delta=" + delta 4909 + " scale=" + scale + " acc=" + acc); 4910 acceleration = acc < MAX_ACCELERATION ? acc : MAX_ACCELERATION; 4911 } else { 4912 // The user is scrolling slowly, so decrease acceleration. 4913 float scale = (delta-normTime) * ACCEL_MOVE_SCALING_FACTOR; 4914 if (scale > 1) acc /= scale; 4915 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " deccelerate: off=" 4916 + off + " normTime=" + normTime + " delta=" + delta 4917 + " scale=" + scale + " acc=" + acc); 4918 acceleration = acc > 1 ? acc : 1; 4919 } 4920 } 4921 position += off; 4922 return (absPosition = Math.abs(position)); 4923 } 4924 4925 /** 4926 * Generate the number of discrete movement events appropriate for 4927 * the currently collected trackball movement. 4928 * 4929 * @param precision The minimum movement required to generate the 4930 * first discrete movement. 4931 * 4932 * @return Returns the number of discrete movements, either positive 4933 * or negative, or 0 if there is not enough trackball movement yet 4934 * for a discrete movement. 4935 */ 4936 int generate(float precision) { 4937 int movement = 0; 4938 nonAccelMovement = 0; 4939 do { 4940 final int dir = position >= 0 ? 1 : -1; 4941 switch (step) { 4942 // If we are going to execute the first step, then we want 4943 // to do this as soon as possible instead of waiting for 4944 // a full movement, in order to make things look responsive. 4945 case 0: 4946 if (absPosition < precision) { 4947 return movement; 4948 } 4949 movement += dir; 4950 nonAccelMovement += dir; 4951 step = 1; 4952 break; 4953 // If we have generated the first movement, then we need 4954 // to wait for the second complete trackball motion before 4955 // generating the second discrete movement. 4956 case 1: 4957 if (absPosition < 2) { 4958 return movement; 4959 } 4960 movement += dir; 4961 nonAccelMovement += dir; 4962 position += dir > 0 ? -2 : 2; 4963 absPosition = Math.abs(position); 4964 step = 2; 4965 break; 4966 // After the first two, we generate discrete movements 4967 // consistently with the trackball, applying an acceleration 4968 // if the trackball is moving quickly. This is a simple 4969 // acceleration on top of what we already compute based 4970 // on how quickly the wheel is being turned, to apply 4971 // a longer increasing acceleration to continuous movement 4972 // in one direction. 4973 default: 4974 if (absPosition < 1) { 4975 return movement; 4976 } 4977 movement += dir; 4978 position += dir >= 0 ? -1 : 1; 4979 absPosition = Math.abs(position); 4980 float acc = acceleration; 4981 acc *= 1.1f; 4982 acceleration = acc < MAX_ACCELERATION ? acc : acceleration; 4983 break; 4984 } 4985 } while (true); 4986 } 4987 } 4988 4989 public static final class CalledFromWrongThreadException extends AndroidRuntimeException { 4990 public CalledFromWrongThreadException(String msg) { 4991 super(msg); 4992 } 4993 } 4994 4995 private SurfaceHolder mHolder = new SurfaceHolder() { 4996 // we only need a SurfaceHolder for opengl. it would be nice 4997 // to implement everything else though, especially the callback 4998 // support (opengl doesn't make use of it right now, but eventually 4999 // will). 5000 public Surface getSurface() { 5001 return mSurface; 5002 } 5003 5004 public boolean isCreating() { 5005 return false; 5006 } 5007 5008 public void addCallback(Callback callback) { 5009 } 5010 5011 public void removeCallback(Callback callback) { 5012 } 5013 5014 public void setFixedSize(int width, int height) { 5015 } 5016 5017 public void setSizeFromLayout() { 5018 } 5019 5020 public void setFormat(int format) { 5021 } 5022 5023 public void setType(int type) { 5024 } 5025 5026 public void setKeepScreenOn(boolean screenOn) { 5027 } 5028 5029 public Canvas lockCanvas() { 5030 return null; 5031 } 5032 5033 public Canvas lockCanvas(Rect dirty) { 5034 return null; 5035 } 5036 5037 public void unlockCanvasAndPost(Canvas canvas) { 5038 } 5039 public Rect getSurfaceFrame() { 5040 return null; 5041 } 5042 }; 5043 5044 static RunQueue getRunQueue() { 5045 RunQueue rq = sRunQueues.get(); 5046 if (rq != null) { 5047 return rq; 5048 } 5049 rq = new RunQueue(); 5050 sRunQueues.set(rq); 5051 return rq; 5052 } 5053 5054 /** 5055 * The run queue is used to enqueue pending work from Views when no Handler is 5056 * attached. The work is executed during the next call to performTraversals on 5057 * the thread. 5058 * @hide 5059 */ 5060 static final class RunQueue { 5061 private final ArrayList<HandlerAction> mActions = new ArrayList<HandlerAction>(); 5062 5063 void post(Runnable action) { 5064 postDelayed(action, 0); 5065 } 5066 5067 void postDelayed(Runnable action, long delayMillis) { 5068 HandlerAction handlerAction = new HandlerAction(); 5069 handlerAction.action = action; 5070 handlerAction.delay = delayMillis; 5071 5072 synchronized (mActions) { 5073 mActions.add(handlerAction); 5074 } 5075 } 5076 5077 void removeCallbacks(Runnable action) { 5078 final HandlerAction handlerAction = new HandlerAction(); 5079 handlerAction.action = action; 5080 5081 synchronized (mActions) { 5082 final ArrayList<HandlerAction> actions = mActions; 5083 5084 while (actions.remove(handlerAction)) { 5085 // Keep going 5086 } 5087 } 5088 } 5089 5090 void executeActions(Handler handler) { 5091 synchronized (mActions) { 5092 final ArrayList<HandlerAction> actions = mActions; 5093 final int count = actions.size(); 5094 5095 for (int i = 0; i < count; i++) { 5096 final HandlerAction handlerAction = actions.get(i); 5097 handler.postDelayed(handlerAction.action, handlerAction.delay); 5098 } 5099 5100 actions.clear(); 5101 } 5102 } 5103 5104 private static class HandlerAction { 5105 Runnable action; 5106 long delay; 5107 5108 @Override 5109 public boolean equals(Object o) { 5110 if (this == o) return true; 5111 if (o == null || getClass() != o.getClass()) return false; 5112 5113 HandlerAction that = (HandlerAction) o; 5114 return !(action != null ? !action.equals(that.action) : that.action != null); 5115 5116 } 5117 5118 @Override 5119 public int hashCode() { 5120 int result = action != null ? action.hashCode() : 0; 5121 result = 31 * result + (int) (delay ^ (delay >>> 32)); 5122 return result; 5123 } 5124 } 5125 } 5126 5127 /** 5128 * Class for managing the accessibility interaction connection 5129 * based on the global accessibility state. 5130 */ 5131 final class AccessibilityInteractionConnectionManager 5132 implements AccessibilityStateChangeListener { 5133 public void onAccessibilityStateChanged(boolean enabled) { 5134 if (enabled) { 5135 ensureConnection(); 5136 if (mAttachInfo != null && mAttachInfo.mHasWindowFocus) { 5137 mView.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 5138 View focusedView = mView.findFocus(); 5139 if (focusedView != null && focusedView != mView) { 5140 focusedView.sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_FOCUSED); 5141 } 5142 } 5143 } else { 5144 ensureNoConnection(); 5145 mHandler.obtainMessage(MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST).sendToTarget(); 5146 } 5147 } 5148 5149 public void ensureConnection() { 5150 if (mAttachInfo != null) { 5151 final boolean registered = 5152 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED; 5153 if (!registered) { 5154 mAttachInfo.mAccessibilityWindowId = 5155 mAccessibilityManager.addAccessibilityInteractionConnection(mWindow, 5156 new AccessibilityInteractionConnection(ViewRootImpl.this)); 5157 } 5158 } 5159 } 5160 5161 public void ensureNoConnection() { 5162 final boolean registered = 5163 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED; 5164 if (registered) { 5165 mAttachInfo.mAccessibilityWindowId = AccessibilityNodeInfo.UNDEFINED; 5166 mAccessibilityManager.removeAccessibilityInteractionConnection(mWindow); 5167 } 5168 } 5169 } 5170 5171 /** 5172 * This class is an interface this ViewAncestor provides to the 5173 * AccessibilityManagerService to the latter can interact with 5174 * the view hierarchy in this ViewAncestor. 5175 */ 5176 static final class AccessibilityInteractionConnection 5177 extends IAccessibilityInteractionConnection.Stub { 5178 private final WeakReference<ViewRootImpl> mViewRootImpl; 5179 5180 AccessibilityInteractionConnection(ViewRootImpl viewRootImpl) { 5181 mViewRootImpl = new WeakReference<ViewRootImpl>(viewRootImpl); 5182 } 5183 5184 @Override 5185 public void findAccessibilityNodeInfoByAccessibilityId(long accessibilityNodeId, 5186 int interactionId, IAccessibilityInteractionConnectionCallback callback, 5187 int flags, int interrogatingPid, long interrogatingTid) { 5188 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 5189 if (viewRootImpl != null && viewRootImpl.mView != null) { 5190 viewRootImpl.getAccessibilityInteractionController() 5191 .findAccessibilityNodeInfoByAccessibilityIdClientThread(accessibilityNodeId, 5192 interactionId, callback, flags, interrogatingPid, interrogatingTid); 5193 } else { 5194 // We cannot make the call and notify the caller so it does not wait. 5195 try { 5196 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 5197 } catch (RemoteException re) { 5198 /* best effort - ignore */ 5199 } 5200 } 5201 } 5202 5203 @Override 5204 public void performAccessibilityAction(long accessibilityNodeId, int action, 5205 Bundle arguments, int interactionId, 5206 IAccessibilityInteractionConnectionCallback callback, int flags, 5207 int interogatingPid, long interrogatingTid) { 5208 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 5209 if (viewRootImpl != null && viewRootImpl.mView != null) { 5210 viewRootImpl.getAccessibilityInteractionController() 5211 .performAccessibilityActionClientThread(accessibilityNodeId, action, arguments, 5212 interactionId, callback, flags, interogatingPid, interrogatingTid); 5213 } else { 5214 // We cannot make the call and notify the caller so it does not wait. 5215 try { 5216 callback.setPerformAccessibilityActionResult(false, interactionId); 5217 } catch (RemoteException re) { 5218 /* best effort - ignore */ 5219 } 5220 } 5221 } 5222 5223 @Override 5224 public void findAccessibilityNodeInfoByViewId(long accessibilityNodeId, int viewId, 5225 int interactionId, IAccessibilityInteractionConnectionCallback callback, 5226 int flags, int interrogatingPid, long interrogatingTid) { 5227 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 5228 if (viewRootImpl != null && viewRootImpl.mView != null) { 5229 viewRootImpl.getAccessibilityInteractionController() 5230 .findAccessibilityNodeInfoByViewIdClientThread(accessibilityNodeId, viewId, 5231 interactionId, callback, flags, interrogatingPid, interrogatingTid); 5232 } else { 5233 // We cannot make the call and notify the caller so it does not wait. 5234 try { 5235 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 5236 } catch (RemoteException re) { 5237 /* best effort - ignore */ 5238 } 5239 } 5240 } 5241 5242 @Override 5243 public void findAccessibilityNodeInfosByText(long accessibilityNodeId, String text, 5244 int interactionId, IAccessibilityInteractionConnectionCallback callback, 5245 int flags, int interrogatingPid, long interrogatingTid) { 5246 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 5247 if (viewRootImpl != null && viewRootImpl.mView != null) { 5248 viewRootImpl.getAccessibilityInteractionController() 5249 .findAccessibilityNodeInfosByTextClientThread(accessibilityNodeId, text, 5250 interactionId, callback, flags, interrogatingPid, interrogatingTid); 5251 } else { 5252 // We cannot make the call and notify the caller so it does not wait. 5253 try { 5254 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 5255 } catch (RemoteException re) { 5256 /* best effort - ignore */ 5257 } 5258 } 5259 } 5260 5261 @Override 5262 public void findFocus(long accessibilityNodeId, int interactionId, int focusType, 5263 IAccessibilityInteractionConnectionCallback callback, int flags, 5264 int interrogatingPid, long interrogatingTid) { 5265 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 5266 if (viewRootImpl != null && viewRootImpl.mView != null) { 5267 viewRootImpl.getAccessibilityInteractionController() 5268 .findFocusClientThread(accessibilityNodeId, interactionId, focusType, 5269 callback, flags, interrogatingPid, interrogatingTid); 5270 } else { 5271 // We cannot make the call and notify the caller so it does not wait. 5272 try { 5273 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 5274 } catch (RemoteException re) { 5275 /* best effort - ignore */ 5276 } 5277 } 5278 } 5279 5280 @Override 5281 public void focusSearch(long accessibilityNodeId, int interactionId, int direction, 5282 IAccessibilityInteractionConnectionCallback callback, int flags, 5283 int interrogatingPid, long interrogatingTid) { 5284 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 5285 if (viewRootImpl != null && viewRootImpl.mView != null) { 5286 viewRootImpl.getAccessibilityInteractionController() 5287 .focusSearchClientThread(accessibilityNodeId, interactionId, direction, 5288 callback, flags, interrogatingPid, interrogatingTid); 5289 } else { 5290 // We cannot make the call and notify the caller so it does not wait. 5291 try { 5292 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 5293 } catch (RemoteException re) { 5294 /* best effort - ignore */ 5295 } 5296 } 5297 } 5298 } 5299 5300 private class SendWindowContentChangedAccessibilityEvent implements Runnable { 5301 public View mSource; 5302 5303 public void run() { 5304 if (mSource != null) { 5305 mSource.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED); 5306 mSource.resetAccessibilityStateChanged(); 5307 mSource = null; 5308 } 5309 } 5310 } 5311} 5312