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 17 package android.view; 18 19 import android.Manifest; 20 import android.animation.LayoutTransition; 21 import android.animation.ValueAnimator; 22 import android.app.ActivityManagerNative; 23 import android.content.ClipDescription; 24 import android.content.ComponentCallbacks; 25 import android.content.ComponentCallbacks2; 26 import android.content.Context; 27 import android.content.pm.ApplicationInfo; 28 import android.content.pm.PackageManager; 29 import android.content.res.CompatibilityInfo; 30 import android.content.res.Configuration; 31 import android.content.res.Resources; 32 import android.graphics.Canvas; 33 import android.graphics.Paint; 34 import android.graphics.PixelFormat; 35 import android.graphics.Point; 36 import android.graphics.PointF; 37 import android.graphics.PorterDuff; 38 import android.graphics.Rect; 39 import android.graphics.Region; 40 import android.graphics.drawable.Drawable; 41 import android.media.AudioManager; 42 import android.os.Binder; 43 import android.os.Bundle; 44 import android.os.Debug; 45 import android.os.Handler; 46 import android.os.LatencyTimer; 47 import android.os.Looper; 48 import android.os.Message; 49 import android.os.ParcelFileDescriptor; 50 import android.os.PowerManager; 51 import android.os.Process; 52 import android.os.RemoteException; 53 import android.os.SystemClock; 54 import android.os.SystemProperties; 55 import android.os.Trace; 56 import android.util.AndroidRuntimeException; 57 import android.util.DisplayMetrics; 58 import android.util.Log; 59 import android.util.Slog; 60 import android.util.TypedValue; 61 import android.view.View.AttachInfo; 62 import android.view.View.MeasureSpec; 63 import android.view.accessibility.AccessibilityEvent; 64 import android.view.accessibility.AccessibilityManager; 65 import android.view.accessibility.AccessibilityManager.AccessibilityStateChangeListener; 66 import android.view.accessibility.AccessibilityNodeInfo; 67 import android.view.accessibility.AccessibilityNodeProvider; 68 import android.view.accessibility.IAccessibilityInteractionConnection; 69 import android.view.accessibility.IAccessibilityInteractionConnectionCallback; 70 import android.view.animation.AccelerateDecelerateInterpolator; 71 import android.view.animation.Interpolator; 72 import android.view.inputmethod.InputConnection; 73 import android.view.inputmethod.InputMethodManager; 74 import android.widget.Scroller; 75 76 import com.android.internal.R; 77 import com.android.internal.policy.PolicyManager; 78 import com.android.internal.view.BaseSurfaceHolder; 79 import com.android.internal.view.IInputMethodCallback; 80 import com.android.internal.view.IInputMethodSession; 81 import com.android.internal.view.RootViewSurfaceTaker; 82 83 import java.io.IOException; 84 import java.io.OutputStream; 85 import java.lang.ref.WeakReference; 86 import java.util.ArrayList; 87 import 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"}) 97 public 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 int mClientWindowLayoutFlags; 233 234 // Pool of queued input events. 235 private static final int MAX_QUEUED_INPUT_EVENT_POOL_SIZE = 10; 236 private QueuedInputEvent mQueuedInputEventPool; 237 private int mQueuedInputEventPoolSize; 238 239 // Input event queue. 240 QueuedInputEvent mFirstPendingInputEvent; 241 QueuedInputEvent mCurrentInputEvent; 242 boolean mProcessInputEventsScheduled; 243 244 boolean mWindowAttributesChanged = false; 245 int mWindowAttributesChangesFlag = 0; 246 247 // These can be accessed by any thread, must be protected with a lock. 248 // Surface can never be reassigned or cleared (use Surface.clear()). 249 private final Surface mSurface = new Surface(); 250 251 boolean mAdded; 252 boolean mAddedTouchMode; 253 254 CompatibilityInfoHolder mCompatibilityInfo; 255 256 /*package*/ int mAddNesting; 257 258 // These are accessed by multiple threads. 259 final Rect mWinFrame; // frame given by window manager. 260 261 final Rect mPendingVisibleInsets = new Rect(); 262 final Rect mPendingContentInsets = new Rect(); 263 final ViewTreeObserver.InternalInsetsInfo mLastGivenInsets 264 = new ViewTreeObserver.InternalInsetsInfo(); 265 266 final Rect mFitSystemWindowsInsets = new Rect(); 267 268 final Configuration mLastConfiguration = new Configuration(); 269 final Configuration mPendingConfiguration = new Configuration(); 270 271 class ResizedInfo { 272 Rect contentInsets; 273 Rect visibleInsets; 274 Configuration newConfig; 275 } 276 277 boolean mScrollMayChange; 278 int mSoftInputMode; 279 View mLastScrolledFocus; 280 int mScrollY; 281 int mCurScrollY; 282 Scroller mScroller; 283 HardwareLayer mResizeBuffer; 284 long mResizeBufferStartTime; 285 int mResizeBufferDuration; 286 static final Interpolator mResizeInterpolator = new AccelerateDecelerateInterpolator(); 287 private ArrayList<LayoutTransition> mPendingTransitions; 288 289 final ViewConfiguration mViewConfiguration; 290 291 /* Drag/drop */ 292 ClipDescription mDragDescription; 293 View mCurrentDragView; 294 volatile Object mLocalDragState; 295 final PointF mDragPoint = new PointF(); 296 final PointF mLastTouchPoint = new PointF(); 297 298 private boolean mProfileRendering; 299 private Thread mRenderProfiler; 300 private volatile boolean mRenderProfilingEnabled; 301 302 // Variables to track frames per second, enabled via DEBUG_FPS flag 303 private long mFpsStartTime = -1; 304 private long mFpsPrevTime = -1; 305 private int mFpsNumFrames; 306 307 private final ArrayList<DisplayList> mDisplayLists = new ArrayList<DisplayList>(24); 308 309 /** 310 * see {@link #playSoundEffect(int)} 311 */ 312 AudioManager mAudioManager; 313 314 final AccessibilityManager mAccessibilityManager; 315 316 AccessibilityInteractionController mAccessibilityInteractionController; 317 318 AccessibilityInteractionConnectionManager mAccessibilityInteractionConnectionManager; 319 320 SendWindowContentChangedAccessibilityEvent mSendWindowContentChangedAccessibilityEvent; 321 322 HashSet<View> mTempHashSet; 323 324 private final int mDensity; 325 326 /** 327 * Consistency verifier for debugging purposes. 328 */ 329 protected final InputEventConsistencyVerifier mInputEventConsistencyVerifier = 330 InputEventConsistencyVerifier.isInstrumentationEnabled() ? 331 new InputEventConsistencyVerifier(this, 0) : null; 332 333 public static IWindowSession getWindowSession(Looper mainLooper) { 334 synchronized (mStaticInit) { 335 if (!mInitialized) { 336 try { 337 InputMethodManager imm = InputMethodManager.getInstance(mainLooper); 338 IWindowManager windowManager = Display.getWindowManager(); 339 sWindowSession = windowManager.openSession( 340 imm.getClient(), imm.getInputContext()); 341 float animatorScale = windowManager.getAnimationScale(2); 342 ValueAnimator.setDurationScale(animatorScale); 343 mInitialized = true; 344 } catch (RemoteException e) { 345 } 346 } 347 return sWindowSession; 348 } 349 } 350 351 static final class SystemUiVisibilityInfo { 352 int seq; 353 int globalVisibility; 354 int localValue; 355 int localChanges; 356 } 357 358 public ViewRootImpl(Context context) { 359 super(); 360 361 if (MEASURE_LATENCY) { 362 if (lt == null) { 363 lt = new LatencyTimer(100, 1000); 364 } 365 } 366 367 // Initialize the statics when this class is first instantiated. This is 368 // done here instead of in the static block because Zygote does not 369 // allow the spawning of threads. 370 getWindowSession(context.getMainLooper()); 371 372 mThread = Thread.currentThread(); 373 mLocation = new WindowLeaked(null); 374 mLocation.fillInStackTrace(); 375 mWidth = -1; 376 mHeight = -1; 377 mDirty = new Rect(); 378 mTempRect = new Rect(); 379 mVisRect = new Rect(); 380 mWinFrame = new Rect(); 381 mWindow = new W(this); 382 mTargetSdkVersion = context.getApplicationInfo().targetSdkVersion; 383 mInputMethodCallback = new InputMethodCallback(this); 384 mViewVisibility = View.GONE; 385 mTransparentRegion = new Region(); 386 mPreviousTransparentRegion = new Region(); 387 mFirst = true; // true for the first time the view is added 388 mAdded = false; 389 mAccessibilityManager = AccessibilityManager.getInstance(context); 390 mAccessibilityInteractionConnectionManager = 391 new AccessibilityInteractionConnectionManager(); 392 mAccessibilityManager.addAccessibilityStateChangeListener( 393 mAccessibilityInteractionConnectionManager); 394 mAttachInfo = new View.AttachInfo(sWindowSession, mWindow, this, mHandler, this); 395 mViewConfiguration = ViewConfiguration.get(context); 396 mDensity = context.getResources().getDisplayMetrics().densityDpi; 397 mFallbackEventHandler = PolicyManager.makeNewFallbackEventHandler(context); 398 mProfileRendering = Boolean.parseBoolean( 399 SystemProperties.get(PROPERTY_PROFILE_RENDERING, "false")); 400 mChoreographer = Choreographer.getInstance(); 401 402 PowerManager powerManager = (PowerManager) context.getSystemService(Context.POWER_SERVICE); 403 mAttachInfo.mScreenOn = powerManager.isScreenOn(); 404 loadSystemProperties(); 405 } 406 407 /** 408 * @return True if the application requests the use of a separate render thread, 409 * false otherwise 410 */ 411 private static boolean isRenderThreadRequested(Context context) { 412 if (USE_RENDER_THREAD) { 413 synchronized (sRenderThreadQueryLock) { 414 if (!sRenderThreadQueried) { 415 final PackageManager packageManager = context.getPackageManager(); 416 final String packageName = context.getApplicationInfo().packageName; 417 try { 418 ApplicationInfo applicationInfo = packageManager.getApplicationInfo(packageName, 419 PackageManager.GET_META_DATA); 420 if (applicationInfo.metaData != null) { 421 sUseRenderThread = applicationInfo.metaData.getBoolean( 422 "android.graphics.renderThread", false); 423 } 424 } catch (PackageManager.NameNotFoundException e) { 425 } finally { 426 sRenderThreadQueried = true; 427 } 428 } 429 return sUseRenderThread; 430 } 431 } else { 432 return false; 433 } 434 } 435 436 public static void addFirstDrawHandler(Runnable callback) { 437 synchronized (sFirstDrawHandlers) { 438 if (!sFirstDrawComplete) { 439 sFirstDrawHandlers.add(callback); 440 } 441 } 442 } 443 444 public static void addConfigCallback(ComponentCallbacks callback) { 445 synchronized (sConfigCallbacks) { 446 sConfigCallbacks.add(callback); 447 } 448 } 449 450 // FIXME for perf testing only 451 private boolean mProfile = false; 452 453 /** 454 * Call this to profile the next traversal call. 455 * FIXME for perf testing only. Remove eventually 456 */ 457 public void profile() { 458 mProfile = true; 459 } 460 461 /** 462 * Indicates whether we are in touch mode. Calling this method triggers an IPC 463 * call and should be avoided whenever possible. 464 * 465 * @return True, if the device is in touch mode, false otherwise. 466 * 467 * @hide 468 */ 469 static boolean isInTouchMode() { 470 if (mInitialized) { 471 try { 472 return sWindowSession.getInTouchMode(); 473 } catch (RemoteException e) { 474 } 475 } 476 return false; 477 } 478 479 /** 480 * We have one child 481 */ 482 public void setView(View view, WindowManager.LayoutParams attrs, View panelParentView) { 483 synchronized (this) { 484 if (mView == null) { 485 mView = view; 486 mFallbackEventHandler.setView(view); 487 mWindowAttributes.copyFrom(attrs); 488 attrs = mWindowAttributes; 489 // Keep track of the actual window flags supplied by the client. 490 mClientWindowLayoutFlags = attrs.flags; 491 492 setAccessibilityFocus(null, null); 493 494 if (view instanceof RootViewSurfaceTaker) { 495 mSurfaceHolderCallback = 496 ((RootViewSurfaceTaker)view).willYouTakeTheSurface(); 497 if (mSurfaceHolderCallback != null) { 498 mSurfaceHolder = new TakenSurfaceHolder(); 499 mSurfaceHolder.setFormat(PixelFormat.UNKNOWN); 500 } 501 } 502 503 CompatibilityInfo compatibilityInfo = mCompatibilityInfo.get(); 504 mTranslator = compatibilityInfo.getTranslator(); 505 506 // If the application owns the surface, don't enable hardware acceleration 507 if (mSurfaceHolder == null) { 508 enableHardwareAcceleration(mView.getContext(), attrs); 509 } 510 511 boolean restore = false; 512 if (mTranslator != null) { 513 mSurface.setCompatibilityTranslator(mTranslator); 514 restore = true; 515 attrs.backup(); 516 mTranslator.translateWindowLayout(attrs); 517 } 518 if (DEBUG_LAYOUT) Log.d(TAG, "WindowLayout in setView:" + attrs); 519 520 if (!compatibilityInfo.supportsScreen()) { 521 attrs.flags |= WindowManager.LayoutParams.FLAG_COMPATIBLE_WINDOW; 522 mLastInCompatMode = true; 523 } 524 525 mSoftInputMode = attrs.softInputMode; 526 mWindowAttributesChanged = true; 527 mWindowAttributesChangesFlag = WindowManager.LayoutParams.EVERYTHING_CHANGED; 528 mAttachInfo.mRootView = view; 529 mAttachInfo.mScalingRequired = mTranslator != null; 530 mAttachInfo.mApplicationScale = 531 mTranslator == null ? 1.0f : mTranslator.applicationScale; 532 if (panelParentView != null) { 533 mAttachInfo.mPanelParentWindowToken 534 = panelParentView.getApplicationWindowToken(); 535 } 536 mAdded = true; 537 int res; /* = WindowManagerImpl.ADD_OKAY; */ 538 539 // Schedule the first layout -before- adding to the window 540 // manager, to make sure we do the relayout before receiving 541 // any other events from the system. 542 requestLayout(); 543 if ((mWindowAttributes.inputFeatures 544 & WindowManager.LayoutParams.INPUT_FEATURE_NO_INPUT_CHANNEL) == 0) { 545 mInputChannel = new InputChannel(); 546 } 547 try { 548 mOrigWindowType = mWindowAttributes.type; 549 mAttachInfo.mRecomputeGlobalAttributes = true; 550 collectViewAttributes(); 551 res = sWindowSession.add(mWindow, mSeq, mWindowAttributes, 552 getHostVisibility(), mAttachInfo.mContentInsets, 553 mInputChannel); 554 } catch (RemoteException e) { 555 mAdded = false; 556 mView = null; 557 mAttachInfo.mRootView = null; 558 mInputChannel = null; 559 mFallbackEventHandler.setView(null); 560 unscheduleTraversals(); 561 setAccessibilityFocus(null, null); 562 throw new RuntimeException("Adding window failed", e); 563 } finally { 564 if (restore) { 565 attrs.restore(); 566 } 567 } 568 569 if (mTranslator != null) { 570 mTranslator.translateRectInScreenToAppWindow(mAttachInfo.mContentInsets); 571 } 572 mPendingContentInsets.set(mAttachInfo.mContentInsets); 573 mPendingVisibleInsets.set(0, 0, 0, 0); 574 if (DEBUG_LAYOUT) Log.v(TAG, "Added window " + mWindow); 575 if (res < WindowManagerImpl.ADD_OKAY) { 576 mView = null; 577 mAttachInfo.mRootView = null; 578 mAdded = false; 579 mFallbackEventHandler.setView(null); 580 unscheduleTraversals(); 581 setAccessibilityFocus(null, null); 582 switch (res) { 583 case WindowManagerImpl.ADD_BAD_APP_TOKEN: 584 case WindowManagerImpl.ADD_BAD_SUBWINDOW_TOKEN: 585 throw new WindowManagerImpl.BadTokenException( 586 "Unable to add window -- token " + attrs.token 587 + " is not valid; is your activity running?"); 588 case WindowManagerImpl.ADD_NOT_APP_TOKEN: 589 throw new WindowManagerImpl.BadTokenException( 590 "Unable to add window -- token " + attrs.token 591 + " is not for an application"); 592 case WindowManagerImpl.ADD_APP_EXITING: 593 throw new WindowManagerImpl.BadTokenException( 594 "Unable to add window -- app for token " + attrs.token 595 + " is exiting"); 596 case WindowManagerImpl.ADD_DUPLICATE_ADD: 597 throw new WindowManagerImpl.BadTokenException( 598 "Unable to add window -- window " + mWindow 599 + " has already been added"); 600 case WindowManagerImpl.ADD_STARTING_NOT_NEEDED: 601 // Silently ignore -- we would have just removed it 602 // right away, anyway. 603 return; 604 case WindowManagerImpl.ADD_MULTIPLE_SINGLETON: 605 throw new WindowManagerImpl.BadTokenException( 606 "Unable to add window " + mWindow + 607 " -- another window of this type already exists"); 608 case WindowManagerImpl.ADD_PERMISSION_DENIED: 609 throw new WindowManagerImpl.BadTokenException( 610 "Unable to add window " + mWindow + 611 " -- permission denied for this window type"); 612 } 613 throw new RuntimeException( 614 "Unable to add window -- unknown error code " + res); 615 } 616 617 if (view instanceof RootViewSurfaceTaker) { 618 mInputQueueCallback = 619 ((RootViewSurfaceTaker)view).willYouTakeTheInputQueue(); 620 } 621 if (mInputChannel != null) { 622 if (mInputQueueCallback != null) { 623 mInputQueue = new InputQueue(mInputChannel); 624 mInputQueueCallback.onInputQueueCreated(mInputQueue); 625 } else { 626 mInputEventReceiver = new WindowInputEventReceiver(mInputChannel, 627 Looper.myLooper()); 628 } 629 } 630 631 view.assignParent(this); 632 mAddedTouchMode = (res&WindowManagerImpl.ADD_FLAG_IN_TOUCH_MODE) != 0; 633 mAppVisible = (res&WindowManagerImpl.ADD_FLAG_APP_VISIBLE) != 0; 634 635 if (mAccessibilityManager.isEnabled()) { 636 mAccessibilityInteractionConnectionManager.ensureConnection(); 637 } 638 639 if (view.getImportantForAccessibility() == View.IMPORTANT_FOR_ACCESSIBILITY_AUTO) { 640 view.setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_YES); 641 } 642 } 643 } 644 } 645 646 void destroyHardwareResources() { 647 if (mAttachInfo.mHardwareRenderer != null) { 648 if (mAttachInfo.mHardwareRenderer.isEnabled()) { 649 mAttachInfo.mHardwareRenderer.destroyLayers(mView); 650 } 651 mAttachInfo.mHardwareRenderer.destroy(false); 652 } 653 } 654 655 void terminateHardwareResources() { 656 if (mAttachInfo.mHardwareRenderer != null) { 657 mAttachInfo.mHardwareRenderer.destroyHardwareResources(mView); 658 mAttachInfo.mHardwareRenderer.destroy(false); 659 } 660 } 661 662 void destroyHardwareLayers() { 663 if (mThread != Thread.currentThread()) { 664 if (mAttachInfo.mHardwareRenderer != null && 665 mAttachInfo.mHardwareRenderer.isEnabled()) { 666 HardwareRenderer.trimMemory(ComponentCallbacks2.TRIM_MEMORY_MODERATE); 667 } 668 } else { 669 if (mAttachInfo.mHardwareRenderer != null && 670 mAttachInfo.mHardwareRenderer.isEnabled()) { 671 mAttachInfo.mHardwareRenderer.destroyLayers(mView); 672 } 673 } 674 } 675 676 public boolean attachFunctor(int functor) { 677 //noinspection SimplifiableIfStatement 678 if (mAttachInfo.mHardwareRenderer != null && mAttachInfo.mHardwareRenderer.isEnabled()) { 679 return mAttachInfo.mHardwareRenderer.attachFunctor(mAttachInfo, functor); 680 } 681 return false; 682 } 683 684 public void detachFunctor(int functor) { 685 if (mAttachInfo.mHardwareRenderer != null) { 686 mAttachInfo.mHardwareRenderer.detachFunctor(functor); 687 } 688 } 689 690 private void enableHardwareAcceleration(Context context, WindowManager.LayoutParams attrs) { 691 mAttachInfo.mHardwareAccelerated = false; 692 mAttachInfo.mHardwareAccelerationRequested = false; 693 694 // Don't enable hardware acceleration when the application is in compatibility mode 695 if (mTranslator != null) return; 696 697 // Try to enable hardware acceleration if requested 698 final boolean hardwareAccelerated = 699 (attrs.flags & WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED) != 0; 700 701 if (hardwareAccelerated) { 702 if (!HardwareRenderer.isAvailable()) { 703 return; 704 } 705 706 // Persistent processes (including the system) should not do 707 // accelerated rendering on low-end devices. In that case, 708 // sRendererDisabled will be set. In addition, the system process 709 // itself should never do accelerated rendering. In that case, both 710 // sRendererDisabled and sSystemRendererDisabled are set. When 711 // sSystemRendererDisabled is set, PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED 712 // can be used by code on the system process to escape that and enable 713 // HW accelerated drawing. (This is basically for the lock screen.) 714 715 final boolean fakeHwAccelerated = (attrs.privateFlags & 716 WindowManager.LayoutParams.PRIVATE_FLAG_FAKE_HARDWARE_ACCELERATED) != 0; 717 final boolean forceHwAccelerated = (attrs.privateFlags & 718 WindowManager.LayoutParams.PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED) != 0; 719 720 if (!HardwareRenderer.sRendererDisabled || (HardwareRenderer.sSystemRendererDisabled 721 && forceHwAccelerated)) { 722 // Don't enable hardware acceleration when we're not on the main thread 723 if (!HardwareRenderer.sSystemRendererDisabled && 724 Looper.getMainLooper() != Looper.myLooper()) { 725 Log.w(HardwareRenderer.LOG_TAG, "Attempting to initialize hardware " 726 + "acceleration outside of the main thread, aborting"); 727 return; 728 } 729 730 final boolean renderThread = isRenderThreadRequested(context); 731 if (renderThread) { 732 Log.i(HardwareRenderer.LOG_TAG, "Render threat initiated"); 733 } 734 735 if (mAttachInfo.mHardwareRenderer != null) { 736 mAttachInfo.mHardwareRenderer.destroy(true); 737 } 738 739 final boolean translucent = attrs.format != PixelFormat.OPAQUE; 740 mAttachInfo.mHardwareRenderer = HardwareRenderer.createGlRenderer(2, translucent); 741 mAttachInfo.mHardwareAccelerated = mAttachInfo.mHardwareAccelerationRequested 742 = mAttachInfo.mHardwareRenderer != null; 743 744 } else if (fakeHwAccelerated) { 745 // The window had wanted to use hardware acceleration, but this 746 // is not allowed in its process. By setting this flag, it can 747 // still render as if it was accelerated. This is basically for 748 // the preview windows the window manager shows for launching 749 // applications, so they will look more like the app being launched. 750 mAttachInfo.mHardwareAccelerationRequested = true; 751 } 752 } 753 } 754 755 public View getView() { 756 return mView; 757 } 758 759 final WindowLeaked getLocation() { 760 return mLocation; 761 } 762 763 void setLayoutParams(WindowManager.LayoutParams attrs, boolean newView) { 764 synchronized (this) { 765 int oldSoftInputMode = mWindowAttributes.softInputMode; 766 // Keep track of the actual window flags supplied by the client. 767 mClientWindowLayoutFlags = attrs.flags; 768 // preserve compatible window flag if exists. 769 int compatibleWindowFlag = 770 mWindowAttributes.flags & WindowManager.LayoutParams.FLAG_COMPATIBLE_WINDOW; 771 // transfer over system UI visibility values as they carry current state. 772 attrs.systemUiVisibility = mWindowAttributes.systemUiVisibility; 773 attrs.subtreeSystemUiVisibility = mWindowAttributes.subtreeSystemUiVisibility; 774 mWindowAttributesChangesFlag = mWindowAttributes.copyFrom(attrs); 775 mWindowAttributes.flags |= compatibleWindowFlag; 776 777 applyKeepScreenOnFlag(mWindowAttributes); 778 779 if (newView) { 780 mSoftInputMode = attrs.softInputMode; 781 requestLayout(); 782 } 783 // Don't lose the mode we last auto-computed. 784 if ((attrs.softInputMode&WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 785 == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 786 mWindowAttributes.softInputMode = (mWindowAttributes.softInputMode 787 & ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) 788 | (oldSoftInputMode 789 & WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST); 790 } 791 mWindowAttributesChanged = true; 792 scheduleTraversals(); 793 } 794 } 795 796 void handleAppVisibility(boolean visible) { 797 if (mAppVisible != visible) { 798 mAppVisible = visible; 799 scheduleTraversals(); 800 } 801 } 802 803 void handleGetNewSurface() { 804 mNewSurfaceNeeded = true; 805 mFullRedrawNeeded = true; 806 scheduleTraversals(); 807 } 808 809 void handleScreenStateChange(boolean on) { 810 if (on != mAttachInfo.mScreenOn) { 811 mAttachInfo.mScreenOn = on; 812 if (mView != null) { 813 mView.dispatchScreenStateChanged(on ? View.SCREEN_STATE_ON : View.SCREEN_STATE_OFF); 814 } 815 if (on) { 816 mFullRedrawNeeded = true; 817 scheduleTraversals(); 818 } 819 } 820 } 821 822 /** 823 * {@inheritDoc} 824 */ 825 public void requestFitSystemWindows() { 826 checkThread(); 827 mFitSystemWindowsRequested = true; 828 scheduleTraversals(); 829 } 830 831 /** 832 * {@inheritDoc} 833 */ 834 public void requestLayout() { 835 checkThread(); 836 mLayoutRequested = true; 837 scheduleTraversals(); 838 } 839 840 /** 841 * {@inheritDoc} 842 */ 843 public boolean isLayoutRequested() { 844 return mLayoutRequested; 845 } 846 847 void invalidate() { 848 mDirty.set(0, 0, mWidth, mHeight); 849 scheduleTraversals(); 850 } 851 852 void invalidateWorld(View view) { 853 view.invalidate(); 854 if (view instanceof ViewGroup) { 855 ViewGroup parent = (ViewGroup)view; 856 for (int i=0; i<parent.getChildCount(); i++) { 857 invalidateWorld(parent.getChildAt(i)); 858 } 859 } 860 } 861 862 public void invalidateChild(View child, Rect dirty) { 863 invalidateChildInParent(null, dirty); 864 } 865 866 public ViewParent invalidateChildInParent(int[] location, Rect dirty) { 867 checkThread(); 868 if (DEBUG_DRAW) Log.v(TAG, "Invalidate child: " + dirty); 869 870 if (dirty == null) { 871 invalidate(); 872 return null; 873 } else if (dirty.isEmpty()) { 874 return null; 875 } 876 877 if (mCurScrollY != 0 || mTranslator != null) { 878 mTempRect.set(dirty); 879 dirty = mTempRect; 880 if (mCurScrollY != 0) { 881 dirty.offset(0, -mCurScrollY); 882 } 883 if (mTranslator != null) { 884 mTranslator.translateRectInAppWindowToScreen(dirty); 885 } 886 if (mAttachInfo.mScalingRequired) { 887 dirty.inset(-1, -1); 888 } 889 } 890 891 final Rect localDirty = mDirty; 892 if (!localDirty.isEmpty() && !localDirty.contains(dirty)) { 893 mAttachInfo.mSetIgnoreDirtyState = true; 894 mAttachInfo.mIgnoreDirtyState = true; 895 } 896 897 // Add the new dirty rect to the current one 898 localDirty.union(dirty.left, dirty.top, dirty.right, dirty.bottom); 899 // Intersect with the bounds of the window to skip 900 // updates that lie outside of the visible region 901 final float appScale = mAttachInfo.mApplicationScale; 902 localDirty.intersect(0, 0, 903 (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 904 905 if (!mWillDrawSoon) { 906 scheduleTraversals(); 907 } 908 909 return null; 910 } 911 912 void setStopped(boolean stopped) { 913 if (mStopped != stopped) { 914 mStopped = stopped; 915 if (!stopped) { 916 scheduleTraversals(); 917 } 918 } 919 } 920 921 public ViewParent getParent() { 922 return null; 923 } 924 925 public boolean getChildVisibleRect(View child, Rect r, android.graphics.Point offset) { 926 if (child != mView) { 927 throw new RuntimeException("child is not mine, honest!"); 928 } 929 // Note: don't apply scroll offset, because we want to know its 930 // visibility in the virtual canvas being given to the view hierarchy. 931 return r.intersect(0, 0, mWidth, mHeight); 932 } 933 934 public void bringChildToFront(View child) { 935 } 936 937 int getHostVisibility() { 938 return mAppVisible ? mView.getVisibility() : View.GONE; 939 } 940 941 void disposeResizeBuffer() { 942 if (mResizeBuffer != null) { 943 mResizeBuffer.destroy(); 944 mResizeBuffer = null; 945 } 946 } 947 948 /** 949 * Add LayoutTransition to the list of transitions to be started in the next traversal. 950 * This list will be cleared after the transitions on the list are start()'ed. These 951 * transitionsa re added by LayoutTransition itself when it sets up animations. The setup 952 * happens during the layout phase of traversal, which we want to complete before any of the 953 * animations are started (because those animations may side-effect properties that layout 954 * depends upon, like the bounding rectangles of the affected views). So we add the transition 955 * to the list and it is started just prior to starting the drawing phase of traversal. 956 * 957 * @param transition The LayoutTransition to be started on the next traversal. 958 * 959 * @hide 960 */ 961 public void requestTransitionStart(LayoutTransition transition) { 962 if (mPendingTransitions == null || !mPendingTransitions.contains(transition)) { 963 if (mPendingTransitions == null) { 964 mPendingTransitions = new ArrayList<LayoutTransition>(); 965 } 966 mPendingTransitions.add(transition); 967 } 968 } 969 970 void scheduleTraversals() { 971 if (!mTraversalScheduled) { 972 mTraversalScheduled = true; 973 mTraversalBarrier = mHandler.getLooper().postSyncBarrier(); 974 mChoreographer.postCallback( 975 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 976 scheduleConsumeBatchedInput(); 977 } 978 } 979 980 void unscheduleTraversals() { 981 if (mTraversalScheduled) { 982 mTraversalScheduled = false; 983 mHandler.getLooper().removeSyncBarrier(mTraversalBarrier); 984 mChoreographer.removeCallbacks( 985 Choreographer.CALLBACK_TRAVERSAL, mTraversalRunnable, null); 986 } 987 } 988 989 void doTraversal() { 990 if (mTraversalScheduled) { 991 mTraversalScheduled = false; 992 mHandler.getLooper().removeSyncBarrier(mTraversalBarrier); 993 994 if (mProfile) { 995 Debug.startMethodTracing("ViewAncestor"); 996 } 997 998 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "performTraversals"); 999 try { 1000 performTraversals(); 1001 } finally { 1002 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 1003 } 1004 1005 if (mProfile) { 1006 Debug.stopMethodTracing(); 1007 mProfile = false; 1008 } 1009 } 1010 } 1011 1012 private void applyKeepScreenOnFlag(WindowManager.LayoutParams params) { 1013 // Update window's global keep screen on flag: if a view has requested 1014 // that the screen be kept on, then it is always set; otherwise, it is 1015 // set to whatever the client last requested for the global state. 1016 if (mAttachInfo.mKeepScreenOn) { 1017 params.flags |= WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON; 1018 } else { 1019 params.flags = (params.flags&~WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON) 1020 | (mClientWindowLayoutFlags&WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 1021 } 1022 } 1023 1024 private boolean collectViewAttributes() { 1025 final View.AttachInfo attachInfo = mAttachInfo; 1026 if (attachInfo.mRecomputeGlobalAttributes) { 1027 //Log.i(TAG, "Computing view hierarchy attributes!"); 1028 attachInfo.mRecomputeGlobalAttributes = false; 1029 boolean oldScreenOn = attachInfo.mKeepScreenOn; 1030 int oldVis = attachInfo.mSystemUiVisibility; 1031 boolean oldHasSystemUiListeners = attachInfo.mHasSystemUiListeners; 1032 attachInfo.mKeepScreenOn = false; 1033 attachInfo.mSystemUiVisibility = 0; 1034 attachInfo.mHasSystemUiListeners = false; 1035 mView.dispatchCollectViewAttributes(attachInfo, 0); 1036 attachInfo.mSystemUiVisibility &= ~attachInfo.mDisabledSystemUiVisibility; 1037 if (attachInfo.mKeepScreenOn != oldScreenOn 1038 || attachInfo.mSystemUiVisibility != oldVis 1039 || attachInfo.mHasSystemUiListeners != oldHasSystemUiListeners) { 1040 WindowManager.LayoutParams params = mWindowAttributes; 1041 applyKeepScreenOnFlag(params); 1042 params.subtreeSystemUiVisibility = attachInfo.mSystemUiVisibility; 1043 params.hasSystemUiListeners = attachInfo.mHasSystemUiListeners; 1044 mView.dispatchWindowSystemUiVisiblityChanged(attachInfo.mSystemUiVisibility); 1045 return true; 1046 } 1047 } 1048 return false; 1049 } 1050 1051 private boolean measureHierarchy(final View host, final WindowManager.LayoutParams lp, 1052 final Resources res, final int desiredWindowWidth, final int desiredWindowHeight) { 1053 int childWidthMeasureSpec; 1054 int childHeightMeasureSpec; 1055 boolean windowSizeMayChange = false; 1056 1057 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) Log.v(TAG, 1058 "Measuring " + host + " in display " + desiredWindowWidth 1059 + "x" + desiredWindowHeight + "..."); 1060 1061 boolean goodMeasure = false; 1062 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT) { 1063 // On large screens, we don't want to allow dialogs to just 1064 // stretch to fill the entire width of the screen to display 1065 // one line of text. First try doing the layout at a smaller 1066 // size to see if it will fit. 1067 final DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1068 res.getValue(com.android.internal.R.dimen.config_prefDialogWidth, mTmpValue, true); 1069 int baseSize = 0; 1070 if (mTmpValue.type == TypedValue.TYPE_DIMENSION) { 1071 baseSize = (int)mTmpValue.getDimension(packageMetrics); 1072 } 1073 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": baseSize=" + baseSize); 1074 if (baseSize != 0 && desiredWindowWidth > baseSize) { 1075 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1076 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1077 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1078 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": measured (" 1079 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1080 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1081 goodMeasure = true; 1082 } else { 1083 // Didn't fit in that size... try expanding a bit. 1084 baseSize = (baseSize+desiredWindowWidth)/2; 1085 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": next baseSize=" 1086 + baseSize); 1087 childWidthMeasureSpec = getRootMeasureSpec(baseSize, lp.width); 1088 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1089 if (DEBUG_DIALOG) Log.v(TAG, "Window " + mView + ": measured (" 1090 + host.getMeasuredWidth() + "," + host.getMeasuredHeight() + ")"); 1091 if ((host.getMeasuredWidthAndState()&View.MEASURED_STATE_TOO_SMALL) == 0) { 1092 if (DEBUG_DIALOG) Log.v(TAG, "Good!"); 1093 goodMeasure = true; 1094 } 1095 } 1096 } 1097 } 1098 1099 if (!goodMeasure) { 1100 childWidthMeasureSpec = getRootMeasureSpec(desiredWindowWidth, lp.width); 1101 childHeightMeasureSpec = getRootMeasureSpec(desiredWindowHeight, lp.height); 1102 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1103 if (mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) { 1104 windowSizeMayChange = true; 1105 } 1106 } 1107 1108 if (DBG) { 1109 System.out.println("======================================"); 1110 System.out.println("performTraversals -- after measure"); 1111 host.debug(); 1112 } 1113 1114 return windowSizeMayChange; 1115 } 1116 1117 private void performTraversals() { 1118 // cache mView since it is used so much below... 1119 final View host = mView; 1120 1121 if (DBG) { 1122 System.out.println("======================================"); 1123 System.out.println("performTraversals"); 1124 host.debug(); 1125 } 1126 1127 if (host == null || !mAdded) 1128 return; 1129 1130 mWillDrawSoon = true; 1131 boolean windowSizeMayChange = false; 1132 boolean newSurface = false; 1133 boolean surfaceChanged = false; 1134 WindowManager.LayoutParams lp = mWindowAttributes; 1135 1136 int desiredWindowWidth; 1137 int desiredWindowHeight; 1138 1139 final View.AttachInfo attachInfo = mAttachInfo; 1140 1141 final int viewVisibility = getHostVisibility(); 1142 boolean viewVisibilityChanged = mViewVisibility != viewVisibility 1143 || mNewSurfaceNeeded; 1144 1145 WindowManager.LayoutParams params = null; 1146 if (mWindowAttributesChanged) { 1147 mWindowAttributesChanged = false; 1148 surfaceChanged = true; 1149 params = lp; 1150 } 1151 CompatibilityInfo compatibilityInfo = mCompatibilityInfo.get(); 1152 if (compatibilityInfo.supportsScreen() == mLastInCompatMode) { 1153 params = lp; 1154 mFullRedrawNeeded = true; 1155 mLayoutRequested = true; 1156 if (mLastInCompatMode) { 1157 params.flags &= ~WindowManager.LayoutParams.FLAG_COMPATIBLE_WINDOW; 1158 mLastInCompatMode = false; 1159 } else { 1160 params.flags |= WindowManager.LayoutParams.FLAG_COMPATIBLE_WINDOW; 1161 mLastInCompatMode = true; 1162 } 1163 } 1164 1165 mWindowAttributesChangesFlag = 0; 1166 1167 Rect frame = mWinFrame; 1168 if (mFirst) { 1169 mFullRedrawNeeded = true; 1170 mLayoutRequested = true; 1171 1172 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL) { 1173 // NOTE -- system code, won't try to do compat mode. 1174 Display disp = WindowManagerImpl.getDefault().getDefaultDisplay(); 1175 Point size = new Point(); 1176 disp.getRealSize(size); 1177 desiredWindowWidth = size.x; 1178 desiredWindowHeight = size.y; 1179 } else { 1180 DisplayMetrics packageMetrics = 1181 mView.getContext().getResources().getDisplayMetrics(); 1182 desiredWindowWidth = packageMetrics.widthPixels; 1183 desiredWindowHeight = packageMetrics.heightPixels; 1184 } 1185 1186 // For the very first time, tell the view hierarchy that it 1187 // is attached to the window. Note that at this point the surface 1188 // object is not initialized to its backing store, but soon it 1189 // will be (assuming the window is visible). 1190 attachInfo.mSurface = mSurface; 1191 // We used to use the following condition to choose 32 bits drawing caches: 1192 // PixelFormat.hasAlpha(lp.format) || lp.format == PixelFormat.RGBX_8888 1193 // However, windows are now always 32 bits by default, so choose 32 bits 1194 attachInfo.mUse32BitDrawingCache = true; 1195 attachInfo.mHasWindowFocus = false; 1196 attachInfo.mWindowVisibility = viewVisibility; 1197 attachInfo.mRecomputeGlobalAttributes = false; 1198 viewVisibilityChanged = false; 1199 mLastConfiguration.setTo(host.getResources().getConfiguration()); 1200 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1201 host.dispatchAttachedToWindow(attachInfo, 0); 1202 mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets); 1203 host.fitSystemWindows(mFitSystemWindowsInsets); 1204 //Log.i(TAG, "Screen on initialized: " + attachInfo.mKeepScreenOn); 1205 1206 } else { 1207 desiredWindowWidth = frame.width(); 1208 desiredWindowHeight = frame.height(); 1209 if (desiredWindowWidth != mWidth || desiredWindowHeight != mHeight) { 1210 if (DEBUG_ORIENTATION) Log.v(TAG, 1211 "View " + host + " resized to: " + frame); 1212 mFullRedrawNeeded = true; 1213 mLayoutRequested = true; 1214 windowSizeMayChange = true; 1215 } 1216 } 1217 1218 if (viewVisibilityChanged) { 1219 attachInfo.mWindowVisibility = viewVisibility; 1220 host.dispatchWindowVisibilityChanged(viewVisibility); 1221 if (viewVisibility != View.VISIBLE || mNewSurfaceNeeded) { 1222 destroyHardwareResources(); 1223 } 1224 if (viewVisibility == View.GONE) { 1225 // After making a window gone, we will count it as being 1226 // shown for the first time the next time it gets focus. 1227 mHasHadWindowFocus = false; 1228 } 1229 } 1230 1231 // Execute enqueued actions on every traversal in case a detached view enqueued an action 1232 getRunQueue().executeActions(attachInfo.mHandler); 1233 1234 boolean insetsChanged = false; 1235 1236 boolean layoutRequested = mLayoutRequested && !mStopped; 1237 if (layoutRequested) { 1238 1239 final Resources res = mView.getContext().getResources(); 1240 1241 if (mFirst) { 1242 // make sure touch mode code executes by setting cached value 1243 // to opposite of the added touch mode. 1244 mAttachInfo.mInTouchMode = !mAddedTouchMode; 1245 ensureTouchModeLocally(mAddedTouchMode); 1246 } else { 1247 if (!mPendingContentInsets.equals(mAttachInfo.mContentInsets)) { 1248 insetsChanged = true; 1249 } 1250 if (!mPendingVisibleInsets.equals(mAttachInfo.mVisibleInsets)) { 1251 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1252 if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: " 1253 + mAttachInfo.mVisibleInsets); 1254 } 1255 if (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT 1256 || lp.height == ViewGroup.LayoutParams.WRAP_CONTENT) { 1257 windowSizeMayChange = true; 1258 1259 if (lp.type == WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL) { 1260 // NOTE -- system code, won't try to do compat mode. 1261 Display disp = WindowManagerImpl.getDefault().getDefaultDisplay(); 1262 Point size = new Point(); 1263 disp.getRealSize(size); 1264 desiredWindowWidth = size.x; 1265 desiredWindowHeight = size.y; 1266 } else { 1267 DisplayMetrics packageMetrics = res.getDisplayMetrics(); 1268 desiredWindowWidth = packageMetrics.widthPixels; 1269 desiredWindowHeight = packageMetrics.heightPixels; 1270 } 1271 } 1272 } 1273 1274 // Ask host how big it wants to be 1275 windowSizeMayChange |= measureHierarchy(host, lp, res, 1276 desiredWindowWidth, desiredWindowHeight); 1277 } 1278 1279 if (collectViewAttributes()) { 1280 params = lp; 1281 } 1282 if (attachInfo.mForceReportNewAttributes) { 1283 attachInfo.mForceReportNewAttributes = false; 1284 params = lp; 1285 } 1286 1287 if (mFirst || attachInfo.mViewVisibilityChanged) { 1288 attachInfo.mViewVisibilityChanged = false; 1289 int resizeMode = mSoftInputMode & 1290 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST; 1291 // If we are in auto resize mode, then we need to determine 1292 // what mode to use now. 1293 if (resizeMode == WindowManager.LayoutParams.SOFT_INPUT_ADJUST_UNSPECIFIED) { 1294 final int N = attachInfo.mScrollContainers.size(); 1295 for (int i=0; i<N; i++) { 1296 if (attachInfo.mScrollContainers.get(i).isShown()) { 1297 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE; 1298 } 1299 } 1300 if (resizeMode == 0) { 1301 resizeMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_PAN; 1302 } 1303 if ((lp.softInputMode & 1304 WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) != resizeMode) { 1305 lp.softInputMode = (lp.softInputMode & 1306 ~WindowManager.LayoutParams.SOFT_INPUT_MASK_ADJUST) | 1307 resizeMode; 1308 params = lp; 1309 } 1310 } 1311 } 1312 1313 if (params != null && (host.mPrivateFlags & View.REQUEST_TRANSPARENT_REGIONS) != 0) { 1314 if (!PixelFormat.formatHasAlpha(params.format)) { 1315 params.format = PixelFormat.TRANSLUCENT; 1316 } 1317 } 1318 1319 if (mFitSystemWindowsRequested) { 1320 mFitSystemWindowsRequested = false; 1321 mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets); 1322 host.fitSystemWindows(mFitSystemWindowsInsets); 1323 if (mLayoutRequested) { 1324 // Short-circuit catching a new layout request here, so 1325 // we don't need to go through two layout passes when things 1326 // change due to fitting system windows, which can happen a lot. 1327 windowSizeMayChange |= measureHierarchy(host, lp, 1328 mView.getContext().getResources(), 1329 desiredWindowWidth, desiredWindowHeight); 1330 } 1331 } 1332 1333 if (layoutRequested) { 1334 // Clear this now, so that if anything requests a layout in the 1335 // rest of this function we will catch it and re-run a full 1336 // layout pass. 1337 mLayoutRequested = false; 1338 } 1339 1340 boolean windowShouldResize = layoutRequested && windowSizeMayChange 1341 && ((mWidth != host.getMeasuredWidth() || mHeight != host.getMeasuredHeight()) 1342 || (lp.width == ViewGroup.LayoutParams.WRAP_CONTENT && 1343 frame.width() < desiredWindowWidth && frame.width() != mWidth) 1344 || (lp.height == ViewGroup.LayoutParams.WRAP_CONTENT && 1345 frame.height() < desiredWindowHeight && frame.height() != mHeight)); 1346 1347 final boolean computesInternalInsets = 1348 attachInfo.mTreeObserver.hasComputeInternalInsetsListeners(); 1349 1350 boolean insetsPending = false; 1351 int relayoutResult = 0; 1352 1353 if (mFirst || windowShouldResize || insetsChanged || 1354 viewVisibilityChanged || params != null) { 1355 1356 if (viewVisibility == View.VISIBLE) { 1357 // If this window is giving internal insets to the window 1358 // manager, and it is being added or changing its visibility, 1359 // then we want to first give the window manager "fake" 1360 // insets to cause it to effectively ignore the content of 1361 // the window during layout. This avoids it briefly causing 1362 // other windows to resize/move based on the raw frame of the 1363 // window, waiting until we can finish laying out this window 1364 // and get back to the window manager with the ultimately 1365 // computed insets. 1366 insetsPending = computesInternalInsets && (mFirst || viewVisibilityChanged); 1367 } 1368 1369 if (mSurfaceHolder != null) { 1370 mSurfaceHolder.mSurfaceLock.lock(); 1371 mDrawingAllowed = true; 1372 } 1373 1374 boolean hwInitialized = false; 1375 boolean contentInsetsChanged = false; 1376 boolean visibleInsetsChanged; 1377 boolean hadSurface = mSurface.isValid(); 1378 1379 try { 1380 if (DEBUG_LAYOUT) { 1381 Log.i(TAG, "host=w:" + host.getMeasuredWidth() + ", h:" + 1382 host.getMeasuredHeight() + ", params=" + params); 1383 } 1384 1385 final int surfaceGenerationId = mSurface.getGenerationId(); 1386 relayoutResult = relayoutWindow(params, viewVisibility, insetsPending); 1387 1388 if (DEBUG_LAYOUT) Log.v(TAG, "relayout: frame=" + frame.toShortString() 1389 + " content=" + mPendingContentInsets.toShortString() 1390 + " visible=" + mPendingVisibleInsets.toShortString() 1391 + " surface=" + mSurface); 1392 1393 if (mPendingConfiguration.seq != 0) { 1394 if (DEBUG_CONFIGURATION) Log.v(TAG, "Visible with new config: " 1395 + mPendingConfiguration); 1396 updateConfiguration(mPendingConfiguration, !mFirst); 1397 mPendingConfiguration.seq = 0; 1398 } 1399 1400 contentInsetsChanged = !mPendingContentInsets.equals( 1401 mAttachInfo.mContentInsets); 1402 visibleInsetsChanged = !mPendingVisibleInsets.equals( 1403 mAttachInfo.mVisibleInsets); 1404 if (contentInsetsChanged) { 1405 if (mWidth > 0 && mHeight > 0 && lp != null && 1406 ((lp.systemUiVisibility|lp.subtreeSystemUiVisibility) 1407 & View.SYSTEM_UI_LAYOUT_FLAGS) == 0 && 1408 mSurface != null && mSurface.isValid() && 1409 !mAttachInfo.mTurnOffWindowResizeAnim && 1410 mAttachInfo.mHardwareRenderer != null && 1411 mAttachInfo.mHardwareRenderer.isEnabled() && 1412 mAttachInfo.mHardwareRenderer.validate() && 1413 lp != null && !PixelFormat.formatHasAlpha(lp.format)) { 1414 1415 disposeResizeBuffer(); 1416 1417 boolean completed = false; 1418 HardwareCanvas hwRendererCanvas = mAttachInfo.mHardwareRenderer.getCanvas(); 1419 HardwareCanvas layerCanvas = null; 1420 try { 1421 if (mResizeBuffer == null) { 1422 mResizeBuffer = mAttachInfo.mHardwareRenderer.createHardwareLayer( 1423 mWidth, mHeight, false); 1424 } else if (mResizeBuffer.getWidth() != mWidth || 1425 mResizeBuffer.getHeight() != mHeight) { 1426 mResizeBuffer.resize(mWidth, mHeight); 1427 } 1428 layerCanvas = mResizeBuffer.start(hwRendererCanvas); 1429 layerCanvas.setViewport(mWidth, mHeight); 1430 layerCanvas.onPreDraw(null); 1431 final int restoreCount = layerCanvas.save(); 1432 1433 layerCanvas.drawColor(0xff000000, PorterDuff.Mode.SRC); 1434 1435 int yoff; 1436 final boolean scrolling = mScroller != null 1437 && mScroller.computeScrollOffset(); 1438 if (scrolling) { 1439 yoff = mScroller.getCurrY(); 1440 mScroller.abortAnimation(); 1441 } else { 1442 yoff = mScrollY; 1443 } 1444 1445 layerCanvas.translate(0, -yoff); 1446 if (mTranslator != null) { 1447 mTranslator.translateCanvas(layerCanvas); 1448 } 1449 1450 mView.draw(layerCanvas); 1451 1452 drawAccessibilityFocusedDrawableIfNeeded(layerCanvas); 1453 1454 mResizeBufferStartTime = SystemClock.uptimeMillis(); 1455 mResizeBufferDuration = mView.getResources().getInteger( 1456 com.android.internal.R.integer.config_mediumAnimTime); 1457 completed = true; 1458 1459 layerCanvas.restoreToCount(restoreCount); 1460 } catch (OutOfMemoryError e) { 1461 Log.w(TAG, "Not enough memory for content change anim buffer", e); 1462 } finally { 1463 if (layerCanvas != null) { 1464 layerCanvas.onPostDraw(); 1465 } 1466 if (mResizeBuffer != null) { 1467 mResizeBuffer.end(hwRendererCanvas); 1468 if (!completed) { 1469 mResizeBuffer.destroy(); 1470 mResizeBuffer = null; 1471 } 1472 } 1473 } 1474 } 1475 mAttachInfo.mContentInsets.set(mPendingContentInsets); 1476 if (DEBUG_LAYOUT) Log.v(TAG, "Content insets changing to: " 1477 + mAttachInfo.mContentInsets); 1478 } 1479 if (contentInsetsChanged || mLastSystemUiVisibility != 1480 mAttachInfo.mSystemUiVisibility || mFitSystemWindowsRequested) { 1481 mLastSystemUiVisibility = mAttachInfo.mSystemUiVisibility; 1482 mFitSystemWindowsRequested = false; 1483 mFitSystemWindowsInsets.set(mAttachInfo.mContentInsets); 1484 host.fitSystemWindows(mFitSystemWindowsInsets); 1485 } 1486 if (visibleInsetsChanged) { 1487 mAttachInfo.mVisibleInsets.set(mPendingVisibleInsets); 1488 if (DEBUG_LAYOUT) Log.v(TAG, "Visible insets changing to: " 1489 + mAttachInfo.mVisibleInsets); 1490 } 1491 1492 if (!hadSurface) { 1493 if (mSurface.isValid()) { 1494 // If we are creating a new surface, then we need to 1495 // completely redraw it. Also, when we get to the 1496 // point of drawing it we will hold off and schedule 1497 // a new traversal instead. This is so we can tell the 1498 // window manager about all of the windows being displayed 1499 // before actually drawing them, so it can display then 1500 // all at once. 1501 newSurface = true; 1502 mFullRedrawNeeded = true; 1503 mPreviousTransparentRegion.setEmpty(); 1504 1505 if (mAttachInfo.mHardwareRenderer != null) { 1506 try { 1507 hwInitialized = mAttachInfo.mHardwareRenderer.initialize(mHolder); 1508 } catch (Surface.OutOfResourcesException e) { 1509 Log.e(TAG, "OutOfResourcesException initializing HW surface", e); 1510 try { 1511 if (!sWindowSession.outOfMemory(mWindow)) { 1512 Slog.w(TAG, "No processes killed for memory; killing self"); 1513 Process.killProcess(Process.myPid()); 1514 } 1515 } catch (RemoteException ex) { 1516 } 1517 mLayoutRequested = true; // ask wm for a new surface next time. 1518 return; 1519 } 1520 } 1521 } 1522 } else if (!mSurface.isValid()) { 1523 // If the surface has been removed, then reset the scroll 1524 // positions. 1525 mLastScrolledFocus = null; 1526 mScrollY = mCurScrollY = 0; 1527 if (mScroller != null) { 1528 mScroller.abortAnimation(); 1529 } 1530 disposeResizeBuffer(); 1531 // Our surface is gone 1532 if (mAttachInfo.mHardwareRenderer != null && 1533 mAttachInfo.mHardwareRenderer.isEnabled()) { 1534 mAttachInfo.mHardwareRenderer.destroy(true); 1535 } 1536 } else if (surfaceGenerationId != mSurface.getGenerationId() && 1537 mSurfaceHolder == null && mAttachInfo.mHardwareRenderer != null) { 1538 mFullRedrawNeeded = true; 1539 try { 1540 mAttachInfo.mHardwareRenderer.updateSurface(mHolder); 1541 } catch (Surface.OutOfResourcesException e) { 1542 Log.e(TAG, "OutOfResourcesException updating HW surface", e); 1543 try { 1544 if (!sWindowSession.outOfMemory(mWindow)) { 1545 Slog.w(TAG, "No processes killed for memory; killing self"); 1546 Process.killProcess(Process.myPid()); 1547 } 1548 } catch (RemoteException ex) { 1549 } 1550 mLayoutRequested = true; // ask wm for a new surface next time. 1551 return; 1552 } 1553 } 1554 } catch (RemoteException e) { 1555 } 1556 1557 if (DEBUG_ORIENTATION) Log.v( 1558 TAG, "Relayout returned: frame=" + frame + ", surface=" + mSurface); 1559 1560 attachInfo.mWindowLeft = frame.left; 1561 attachInfo.mWindowTop = frame.top; 1562 1563 // !!FIXME!! This next section handles the case where we did not get the 1564 // window size we asked for. We should avoid this by getting a maximum size from 1565 // the window session beforehand. 1566 if (mWidth != frame.width() || mHeight != frame.height()) { 1567 mWidth = frame.width(); 1568 mHeight = frame.height(); 1569 } 1570 1571 if (mSurfaceHolder != null) { 1572 // The app owns the surface; tell it about what is going on. 1573 if (mSurface.isValid()) { 1574 // XXX .copyFrom() doesn't work! 1575 //mSurfaceHolder.mSurface.copyFrom(mSurface); 1576 mSurfaceHolder.mSurface = mSurface; 1577 } 1578 mSurfaceHolder.setSurfaceFrameSize(mWidth, mHeight); 1579 mSurfaceHolder.mSurfaceLock.unlock(); 1580 if (mSurface.isValid()) { 1581 if (!hadSurface) { 1582 mSurfaceHolder.ungetCallbacks(); 1583 1584 mIsCreating = true; 1585 mSurfaceHolderCallback.surfaceCreated(mSurfaceHolder); 1586 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1587 if (callbacks != null) { 1588 for (SurfaceHolder.Callback c : callbacks) { 1589 c.surfaceCreated(mSurfaceHolder); 1590 } 1591 } 1592 surfaceChanged = true; 1593 } 1594 if (surfaceChanged) { 1595 mSurfaceHolderCallback.surfaceChanged(mSurfaceHolder, 1596 lp.format, mWidth, mHeight); 1597 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1598 if (callbacks != null) { 1599 for (SurfaceHolder.Callback c : callbacks) { 1600 c.surfaceChanged(mSurfaceHolder, lp.format, 1601 mWidth, mHeight); 1602 } 1603 } 1604 } 1605 mIsCreating = false; 1606 } else if (hadSurface) { 1607 mSurfaceHolder.ungetCallbacks(); 1608 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 1609 mSurfaceHolderCallback.surfaceDestroyed(mSurfaceHolder); 1610 if (callbacks != null) { 1611 for (SurfaceHolder.Callback c : callbacks) { 1612 c.surfaceDestroyed(mSurfaceHolder); 1613 } 1614 } 1615 mSurfaceHolder.mSurfaceLock.lock(); 1616 try { 1617 mSurfaceHolder.mSurface = new Surface(); 1618 } finally { 1619 mSurfaceHolder.mSurfaceLock.unlock(); 1620 } 1621 } 1622 } 1623 1624 if (mAttachInfo.mHardwareRenderer != null && 1625 mAttachInfo.mHardwareRenderer.isEnabled()) { 1626 if (hwInitialized || windowShouldResize || 1627 mWidth != mAttachInfo.mHardwareRenderer.getWidth() || 1628 mHeight != mAttachInfo.mHardwareRenderer.getHeight()) { 1629 mAttachInfo.mHardwareRenderer.setup(mWidth, mHeight); 1630 if (!hwInitialized) { 1631 mAttachInfo.mHardwareRenderer.invalidate(mHolder); 1632 } 1633 } 1634 } 1635 1636 if (!mStopped) { 1637 boolean focusChangedDueToTouchMode = ensureTouchModeLocally( 1638 (relayoutResult&WindowManagerImpl.RELAYOUT_RES_IN_TOUCH_MODE) != 0); 1639 if (focusChangedDueToTouchMode || mWidth != host.getMeasuredWidth() 1640 || mHeight != host.getMeasuredHeight() || contentInsetsChanged) { 1641 int childWidthMeasureSpec = getRootMeasureSpec(mWidth, lp.width); 1642 int childHeightMeasureSpec = getRootMeasureSpec(mHeight, lp.height); 1643 1644 if (DEBUG_LAYOUT) Log.v(TAG, "Ooops, something changed! mWidth=" 1645 + mWidth + " measuredWidth=" + host.getMeasuredWidth() 1646 + " mHeight=" + mHeight 1647 + " measuredHeight=" + host.getMeasuredHeight() 1648 + " coveredInsetsChanged=" + contentInsetsChanged); 1649 1650 // Ask host how big it wants to be 1651 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1652 1653 // Implementation of weights from WindowManager.LayoutParams 1654 // We just grow the dimensions as needed and re-measure if 1655 // needs be 1656 int width = host.getMeasuredWidth(); 1657 int height = host.getMeasuredHeight(); 1658 boolean measureAgain = false; 1659 1660 if (lp.horizontalWeight > 0.0f) { 1661 width += (int) ((mWidth - width) * lp.horizontalWeight); 1662 childWidthMeasureSpec = MeasureSpec.makeMeasureSpec(width, 1663 MeasureSpec.EXACTLY); 1664 measureAgain = true; 1665 } 1666 if (lp.verticalWeight > 0.0f) { 1667 height += (int) ((mHeight - height) * lp.verticalWeight); 1668 childHeightMeasureSpec = MeasureSpec.makeMeasureSpec(height, 1669 MeasureSpec.EXACTLY); 1670 measureAgain = true; 1671 } 1672 1673 if (measureAgain) { 1674 if (DEBUG_LAYOUT) Log.v(TAG, 1675 "And hey let's measure once more: width=" + width 1676 + " height=" + height); 1677 performMeasure(childWidthMeasureSpec, childHeightMeasureSpec); 1678 } 1679 1680 layoutRequested = true; 1681 } 1682 } 1683 } 1684 1685 final boolean didLayout = layoutRequested && !mStopped; 1686 boolean triggerGlobalLayoutListener = didLayout 1687 || attachInfo.mRecomputeGlobalAttributes; 1688 if (didLayout) { 1689 performLayout(); 1690 1691 // By this point all views have been sized and positionned 1692 // We can compute the transparent area 1693 1694 if ((host.mPrivateFlags & View.REQUEST_TRANSPARENT_REGIONS) != 0) { 1695 // start out transparent 1696 // TODO: AVOID THAT CALL BY CACHING THE RESULT? 1697 host.getLocationInWindow(mTmpLocation); 1698 mTransparentRegion.set(mTmpLocation[0], mTmpLocation[1], 1699 mTmpLocation[0] + host.mRight - host.mLeft, 1700 mTmpLocation[1] + host.mBottom - host.mTop); 1701 1702 host.gatherTransparentRegion(mTransparentRegion); 1703 if (mTranslator != null) { 1704 mTranslator.translateRegionInWindowToScreen(mTransparentRegion); 1705 } 1706 1707 if (!mTransparentRegion.equals(mPreviousTransparentRegion)) { 1708 mPreviousTransparentRegion.set(mTransparentRegion); 1709 // reconfigure window manager 1710 try { 1711 sWindowSession.setTransparentRegion(mWindow, mTransparentRegion); 1712 } catch (RemoteException e) { 1713 } 1714 } 1715 } 1716 1717 if (DBG) { 1718 System.out.println("======================================"); 1719 System.out.println("performTraversals -- after setFrame"); 1720 host.debug(); 1721 } 1722 } 1723 1724 if (triggerGlobalLayoutListener) { 1725 attachInfo.mRecomputeGlobalAttributes = false; 1726 attachInfo.mTreeObserver.dispatchOnGlobalLayout(); 1727 1728 if (AccessibilityManager.getInstance(host.mContext).isEnabled()) { 1729 postSendWindowContentChangedCallback(mView); 1730 } 1731 } 1732 1733 if (computesInternalInsets) { 1734 // Clear the original insets. 1735 final ViewTreeObserver.InternalInsetsInfo insets = attachInfo.mGivenInternalInsets; 1736 insets.reset(); 1737 1738 // Compute new insets in place. 1739 attachInfo.mTreeObserver.dispatchOnComputeInternalInsets(insets); 1740 1741 // Tell the window manager. 1742 if (insetsPending || !mLastGivenInsets.equals(insets)) { 1743 mLastGivenInsets.set(insets); 1744 1745 // Translate insets to screen coordinates if needed. 1746 final Rect contentInsets; 1747 final Rect visibleInsets; 1748 final Region touchableRegion; 1749 if (mTranslator != null) { 1750 contentInsets = mTranslator.getTranslatedContentInsets(insets.contentInsets); 1751 visibleInsets = mTranslator.getTranslatedVisibleInsets(insets.visibleInsets); 1752 touchableRegion = mTranslator.getTranslatedTouchableArea(insets.touchableRegion); 1753 } else { 1754 contentInsets = insets.contentInsets; 1755 visibleInsets = insets.visibleInsets; 1756 touchableRegion = insets.touchableRegion; 1757 } 1758 1759 try { 1760 sWindowSession.setInsets(mWindow, insets.mTouchableInsets, 1761 contentInsets, visibleInsets, touchableRegion); 1762 } catch (RemoteException e) { 1763 } 1764 } 1765 } 1766 1767 boolean skipDraw = false; 1768 1769 if (mFirst) { 1770 // handle first focus request 1771 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: mView.hasFocus()=" 1772 + mView.hasFocus()); 1773 if (mView != null) { 1774 if (!mView.hasFocus()) { 1775 mView.requestFocus(View.FOCUS_FORWARD); 1776 mFocusedView = mRealFocusedView = mView.findFocus(); 1777 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: requested focused view=" 1778 + mFocusedView); 1779 } else { 1780 mRealFocusedView = mView.findFocus(); 1781 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "First: existing focused view=" 1782 + mRealFocusedView); 1783 } 1784 } 1785 if ((relayoutResult&WindowManagerImpl.RELAYOUT_RES_ANIMATING) != 0) { 1786 // The first time we relayout the window, if the system is 1787 // doing window animations, we want to hold of on any future 1788 // draws until the animation is done. 1789 mWindowsAnimating = true; 1790 } 1791 } else if (mWindowsAnimating) { 1792 skipDraw = true; 1793 } 1794 1795 mFirst = false; 1796 mWillDrawSoon = false; 1797 mNewSurfaceNeeded = false; 1798 mViewVisibility = viewVisibility; 1799 1800 if (mAttachInfo.mHasWindowFocus) { 1801 final boolean imTarget = WindowManager.LayoutParams 1802 .mayUseInputMethod(mWindowAttributes.flags); 1803 if (imTarget != mLastWasImTarget) { 1804 mLastWasImTarget = imTarget; 1805 InputMethodManager imm = InputMethodManager.peekInstance(); 1806 if (imm != null && imTarget) { 1807 imm.startGettingWindowFocus(mView); 1808 imm.onWindowFocus(mView, mView.findFocus(), 1809 mWindowAttributes.softInputMode, 1810 !mHasHadWindowFocus, mWindowAttributes.flags); 1811 } 1812 } 1813 } 1814 1815 // Remember if we must report the next draw. 1816 if ((relayoutResult & WindowManagerImpl.RELAYOUT_RES_FIRST_TIME) != 0) { 1817 mReportNextDraw = true; 1818 } 1819 1820 boolean cancelDraw = attachInfo.mTreeObserver.dispatchOnPreDraw() || 1821 viewVisibility != View.VISIBLE; 1822 1823 if (!cancelDraw && !newSurface) { 1824 if (!skipDraw || mReportNextDraw) { 1825 if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 1826 for (int i = 0; i < mPendingTransitions.size(); ++i) { 1827 mPendingTransitions.get(i).startChangingAnimations(); 1828 } 1829 mPendingTransitions.clear(); 1830 } 1831 1832 performDraw(); 1833 } 1834 } else { 1835 if (viewVisibility == View.VISIBLE) { 1836 // Try again 1837 scheduleTraversals(); 1838 } else if (mPendingTransitions != null && mPendingTransitions.size() > 0) { 1839 for (int i = 0; i < mPendingTransitions.size(); ++i) { 1840 mPendingTransitions.get(i).endChangingAnimations(); 1841 } 1842 mPendingTransitions.clear(); 1843 } 1844 } 1845 } 1846 1847 private void performMeasure(int childWidthMeasureSpec, int childHeightMeasureSpec) { 1848 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "measure"); 1849 try { 1850 mView.measure(childWidthMeasureSpec, childHeightMeasureSpec); 1851 } finally { 1852 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 1853 } 1854 } 1855 1856 private void performLayout() { 1857 mLayoutRequested = false; 1858 mScrollMayChange = true; 1859 1860 final View host = mView; 1861 if (DEBUG_ORIENTATION || DEBUG_LAYOUT) { 1862 Log.v(TAG, "Laying out " + host + " to (" + 1863 host.getMeasuredWidth() + ", " + host.getMeasuredHeight() + ")"); 1864 } 1865 1866 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "layout"); 1867 try { 1868 host.layout(0, 0, host.getMeasuredWidth(), host.getMeasuredHeight()); 1869 } finally { 1870 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 1871 } 1872 } 1873 1874 public void requestTransparentRegion(View child) { 1875 // the test below should not fail unless someone is messing with us 1876 checkThread(); 1877 if (mView == child) { 1878 mView.mPrivateFlags |= View.REQUEST_TRANSPARENT_REGIONS; 1879 // Need to make sure we re-evaluate the window attributes next 1880 // time around, to ensure the window has the correct format. 1881 mWindowAttributesChanged = true; 1882 mWindowAttributesChangesFlag = 0; 1883 requestLayout(); 1884 } 1885 } 1886 1887 /** 1888 * Figures out the measure spec for the root view in a window based on it's 1889 * layout params. 1890 * 1891 * @param windowSize 1892 * The available width or height of the window 1893 * 1894 * @param rootDimension 1895 * The layout params for one dimension (width or height) of the 1896 * window. 1897 * 1898 * @return The measure spec to use to measure the root view. 1899 */ 1900 private static int getRootMeasureSpec(int windowSize, int rootDimension) { 1901 int measureSpec; 1902 switch (rootDimension) { 1903 1904 case ViewGroup.LayoutParams.MATCH_PARENT: 1905 // Window can't resize. Force root view to be windowSize. 1906 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.EXACTLY); 1907 break; 1908 case ViewGroup.LayoutParams.WRAP_CONTENT: 1909 // Window can resize. Set max size for root view. 1910 measureSpec = MeasureSpec.makeMeasureSpec(windowSize, MeasureSpec.AT_MOST); 1911 break; 1912 default: 1913 // Window wants to be an exact size. Force root view to be that size. 1914 measureSpec = MeasureSpec.makeMeasureSpec(rootDimension, MeasureSpec.EXACTLY); 1915 break; 1916 } 1917 return measureSpec; 1918 } 1919 1920 int mHardwareYOffset; 1921 int mResizeAlpha; 1922 final Paint mResizePaint = new Paint(); 1923 1924 public void onHardwarePreDraw(HardwareCanvas canvas) { 1925 canvas.translate(0, -mHardwareYOffset); 1926 } 1927 1928 public void onHardwarePostDraw(HardwareCanvas canvas) { 1929 if (mResizeBuffer != null) { 1930 mResizePaint.setAlpha(mResizeAlpha); 1931 canvas.drawHardwareLayer(mResizeBuffer, 0.0f, mHardwareYOffset, mResizePaint); 1932 } 1933 drawAccessibilityFocusedDrawableIfNeeded(canvas); 1934 } 1935 1936 /** 1937 * @hide 1938 */ 1939 void outputDisplayList(View view) { 1940 if (mAttachInfo != null && mAttachInfo.mHardwareCanvas != null) { 1941 DisplayList displayList = view.getDisplayList(); 1942 if (displayList != null) { 1943 mAttachInfo.mHardwareCanvas.outputDisplayList(displayList); 1944 } 1945 } 1946 } 1947 1948 /** 1949 * @see #PROPERTY_PROFILE_RENDERING 1950 */ 1951 private void profileRendering(boolean enabled) { 1952 if (mProfileRendering) { 1953 mRenderProfilingEnabled = enabled; 1954 if (mRenderProfiler == null) { 1955 mRenderProfiler = new Thread(new Runnable() { 1956 @Override 1957 public void run() { 1958 Log.d(TAG, "Starting profiling thread"); 1959 while (mRenderProfilingEnabled) { 1960 mAttachInfo.mHandler.post(new Runnable() { 1961 @Override 1962 public void run() { 1963 mDirty.set(0, 0, mWidth, mHeight); 1964 scheduleTraversals(); 1965 } 1966 }); 1967 try { 1968 // TODO: This should use vsync when we get an API 1969 Thread.sleep(15); 1970 } catch (InterruptedException e) { 1971 Log.d(TAG, "Exiting profiling thread"); 1972 } 1973 } 1974 } 1975 }, "Rendering Profiler"); 1976 mRenderProfiler.start(); 1977 } else { 1978 mRenderProfiler.interrupt(); 1979 mRenderProfiler = null; 1980 } 1981 } 1982 } 1983 1984 /** 1985 * Called from draw() when DEBUG_FPS is enabled 1986 */ 1987 private void trackFPS() { 1988 // Tracks frames per second drawn. First value in a series of draws may be bogus 1989 // because it down not account for the intervening idle time 1990 long nowTime = System.currentTimeMillis(); 1991 if (mFpsStartTime < 0) { 1992 mFpsStartTime = mFpsPrevTime = nowTime; 1993 mFpsNumFrames = 0; 1994 } else { 1995 ++mFpsNumFrames; 1996 String thisHash = Integer.toHexString(System.identityHashCode(this)); 1997 long frameTime = nowTime - mFpsPrevTime; 1998 long totalTime = nowTime - mFpsStartTime; 1999 Log.v(TAG, "0x" + thisHash + "\tFrame time:\t" + frameTime); 2000 mFpsPrevTime = nowTime; 2001 if (totalTime > 1000) { 2002 float fps = (float) mFpsNumFrames * 1000 / totalTime; 2003 Log.v(TAG, "0x" + thisHash + "\tFPS:\t" + fps); 2004 mFpsStartTime = nowTime; 2005 mFpsNumFrames = 0; 2006 } 2007 } 2008 } 2009 2010 private void performDraw() { 2011 if (!mAttachInfo.mScreenOn && !mReportNextDraw) { 2012 return; 2013 } 2014 2015 final boolean fullRedrawNeeded = mFullRedrawNeeded; 2016 mFullRedrawNeeded = false; 2017 2018 mIsDrawing = true; 2019 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "draw"); 2020 try { 2021 draw(fullRedrawNeeded); 2022 } finally { 2023 mIsDrawing = false; 2024 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 2025 } 2026 2027 if (mReportNextDraw) { 2028 mReportNextDraw = false; 2029 2030 if (LOCAL_LOGV) { 2031 Log.v(TAG, "FINISHED DRAWING: " + mWindowAttributes.getTitle()); 2032 } 2033 if (mSurfaceHolder != null && mSurface.isValid()) { 2034 mSurfaceHolderCallback.surfaceRedrawNeeded(mSurfaceHolder); 2035 SurfaceHolder.Callback callbacks[] = mSurfaceHolder.getCallbacks(); 2036 if (callbacks != null) { 2037 for (SurfaceHolder.Callback c : callbacks) { 2038 if (c instanceof SurfaceHolder.Callback2) { 2039 ((SurfaceHolder.Callback2)c).surfaceRedrawNeeded( 2040 mSurfaceHolder); 2041 } 2042 } 2043 } 2044 } 2045 try { 2046 sWindowSession.finishDrawing(mWindow); 2047 } catch (RemoteException e) { 2048 } 2049 } 2050 } 2051 2052 private void draw(boolean fullRedrawNeeded) { 2053 Surface surface = mSurface; 2054 if (surface == null || !surface.isValid()) { 2055 return; 2056 } 2057 2058 if (DEBUG_FPS) { 2059 trackFPS(); 2060 } 2061 2062 if (!sFirstDrawComplete) { 2063 synchronized (sFirstDrawHandlers) { 2064 sFirstDrawComplete = true; 2065 final int count = sFirstDrawHandlers.size(); 2066 for (int i = 0; i< count; i++) { 2067 mHandler.post(sFirstDrawHandlers.get(i)); 2068 } 2069 } 2070 } 2071 2072 scrollToRectOrFocus(null, false); 2073 2074 final AttachInfo attachInfo = mAttachInfo; 2075 if (attachInfo.mViewScrollChanged) { 2076 attachInfo.mViewScrollChanged = false; 2077 attachInfo.mTreeObserver.dispatchOnScrollChanged(); 2078 } 2079 2080 int yoff; 2081 boolean animating = mScroller != null && mScroller.computeScrollOffset(); 2082 if (animating) { 2083 yoff = mScroller.getCurrY(); 2084 } else { 2085 yoff = mScrollY; 2086 } 2087 if (mCurScrollY != yoff) { 2088 mCurScrollY = yoff; 2089 fullRedrawNeeded = true; 2090 } 2091 2092 final float appScale = attachInfo.mApplicationScale; 2093 final boolean scalingRequired = attachInfo.mScalingRequired; 2094 2095 int resizeAlpha = 0; 2096 if (mResizeBuffer != null) { 2097 long deltaTime = SystemClock.uptimeMillis() - mResizeBufferStartTime; 2098 if (deltaTime < mResizeBufferDuration) { 2099 float amt = deltaTime/(float) mResizeBufferDuration; 2100 amt = mResizeInterpolator.getInterpolation(amt); 2101 animating = true; 2102 resizeAlpha = 255 - (int)(amt*255); 2103 } else { 2104 disposeResizeBuffer(); 2105 } 2106 } 2107 2108 final Rect dirty = mDirty; 2109 if (mSurfaceHolder != null) { 2110 // The app owns the surface, we won't draw. 2111 dirty.setEmpty(); 2112 if (animating) { 2113 if (mScroller != null) { 2114 mScroller.abortAnimation(); 2115 } 2116 disposeResizeBuffer(); 2117 } 2118 return; 2119 } 2120 2121 if (fullRedrawNeeded) { 2122 attachInfo.mIgnoreDirtyState = true; 2123 dirty.set(0, 0, (int) (mWidth * appScale + 0.5f), (int) (mHeight * appScale + 0.5f)); 2124 } 2125 2126 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2127 Log.v(TAG, "Draw " + mView + "/" 2128 + mWindowAttributes.getTitle() 2129 + ": dirty={" + dirty.left + "," + dirty.top 2130 + "," + dirty.right + "," + dirty.bottom + "} surface=" 2131 + surface + " surface.isValid()=" + surface.isValid() + ", appScale:" + 2132 appScale + ", width=" + mWidth + ", height=" + mHeight); 2133 } 2134 2135 attachInfo.mTreeObserver.dispatchOnDraw(); 2136 2137 if (!dirty.isEmpty() || mIsAnimating) { 2138 if (attachInfo.mHardwareRenderer != null && attachInfo.mHardwareRenderer.isEnabled()) { 2139 // Draw with hardware renderer. 2140 mIsAnimating = false; 2141 mHardwareYOffset = yoff; 2142 mResizeAlpha = resizeAlpha; 2143 2144 mCurrentDirty.set(dirty); 2145 mCurrentDirty.union(mPreviousDirty); 2146 mPreviousDirty.set(dirty); 2147 dirty.setEmpty(); 2148 2149 if (attachInfo.mHardwareRenderer.draw(mView, attachInfo, this, 2150 animating ? null : mCurrentDirty)) { 2151 mPreviousDirty.set(0, 0, mWidth, mHeight); 2152 } 2153 } else if (!drawSoftware(surface, attachInfo, yoff, scalingRequired, dirty)) { 2154 return; 2155 } 2156 } 2157 2158 if (animating) { 2159 mFullRedrawNeeded = true; 2160 scheduleTraversals(); 2161 } 2162 } 2163 2164 /** 2165 * @return true if drawing was succesfull, false if an error occurred 2166 */ 2167 private boolean drawSoftware(Surface surface, AttachInfo attachInfo, int yoff, 2168 boolean scalingRequired, Rect dirty) { 2169 2170 // If we get here with a disabled & requested hardware renderer, something went 2171 // wrong (an invalidate posted right before we destroyed the hardware surface 2172 // for instance) so we should just bail out. Locking the surface with software 2173 // rendering at this point would lock it forever and prevent hardware renderer 2174 // from doing its job when it comes back. 2175 if (attachInfo.mHardwareRenderer != null && !attachInfo.mHardwareRenderer.isEnabled() && 2176 attachInfo.mHardwareRenderer.isRequested()) { 2177 mFullRedrawNeeded = true; 2178 scheduleTraversals(); 2179 return false; 2180 } 2181 2182 // Draw with software renderer. 2183 Canvas canvas; 2184 try { 2185 int left = dirty.left; 2186 int top = dirty.top; 2187 int right = dirty.right; 2188 int bottom = dirty.bottom; 2189 2190 canvas = mSurface.lockCanvas(dirty); 2191 2192 if (left != dirty.left || top != dirty.top || right != dirty.right || 2193 bottom != dirty.bottom) { 2194 attachInfo.mIgnoreDirtyState = true; 2195 } 2196 2197 // TODO: Do this in native 2198 canvas.setDensity(mDensity); 2199 } catch (Surface.OutOfResourcesException e) { 2200 Log.e(TAG, "OutOfResourcesException locking surface", e); 2201 try { 2202 if (!sWindowSession.outOfMemory(mWindow)) { 2203 Slog.w(TAG, "No processes killed for memory; killing self"); 2204 Process.killProcess(Process.myPid()); 2205 } 2206 } catch (RemoteException ex) { 2207 } 2208 mLayoutRequested = true; // ask wm for a new surface next time. 2209 return false; 2210 } catch (IllegalArgumentException e) { 2211 Log.e(TAG, "Could not lock surface", e); 2212 // Don't assume this is due to out of memory, it could be 2213 // something else, and if it is something else then we could 2214 // kill stuff (or ourself) for no reason. 2215 mLayoutRequested = true; // ask wm for a new surface next time. 2216 return false; 2217 } 2218 2219 try { 2220 if (DEBUG_ORIENTATION || DEBUG_DRAW) { 2221 Log.v(TAG, "Surface " + surface + " drawing to bitmap w=" 2222 + canvas.getWidth() + ", h=" + canvas.getHeight()); 2223 //canvas.drawARGB(255, 255, 0, 0); 2224 } 2225 2226 // If this bitmap's format includes an alpha channel, we 2227 // need to clear it before drawing so that the child will 2228 // properly re-composite its drawing on a transparent 2229 // background. This automatically respects the clip/dirty region 2230 // or 2231 // If we are applying an offset, we need to clear the area 2232 // where the offset doesn't appear to avoid having garbage 2233 // left in the blank areas. 2234 if (!canvas.isOpaque() || yoff != 0) { 2235 canvas.drawColor(0, PorterDuff.Mode.CLEAR); 2236 } 2237 2238 dirty.setEmpty(); 2239 mIsAnimating = false; 2240 attachInfo.mDrawingTime = SystemClock.uptimeMillis(); 2241 mView.mPrivateFlags |= View.DRAWN; 2242 2243 if (DEBUG_DRAW) { 2244 Context cxt = mView.getContext(); 2245 Log.i(TAG, "Drawing: package:" + cxt.getPackageName() + 2246 ", metrics=" + cxt.getResources().getDisplayMetrics() + 2247 ", compatibilityInfo=" + cxt.getResources().getCompatibilityInfo()); 2248 } 2249 try { 2250 canvas.translate(0, -yoff); 2251 if (mTranslator != null) { 2252 mTranslator.translateCanvas(canvas); 2253 } 2254 canvas.setScreenDensity(scalingRequired 2255 ? DisplayMetrics.DENSITY_DEVICE : 0); 2256 attachInfo.mSetIgnoreDirtyState = false; 2257 2258 mView.draw(canvas); 2259 2260 drawAccessibilityFocusedDrawableIfNeeded(canvas); 2261 } finally { 2262 if (!attachInfo.mSetIgnoreDirtyState) { 2263 // Only clear the flag if it was not set during the mView.draw() call 2264 attachInfo.mIgnoreDirtyState = false; 2265 } 2266 } 2267 } finally { 2268 try { 2269 surface.unlockCanvasAndPost(canvas); 2270 } catch (IllegalArgumentException e) { 2271 Log.e(TAG, "Could not unlock surface", e); 2272 mLayoutRequested = true; // ask wm for a new surface next time. 2273 //noinspection ReturnInsideFinallyBlock 2274 return false; 2275 } 2276 2277 if (LOCAL_LOGV) { 2278 Log.v(TAG, "Surface " + surface + " unlockCanvasAndPost"); 2279 } 2280 } 2281 return true; 2282 } 2283 2284 @Override 2285 public View findViewToTakeAccessibilityFocusFromHover(View child, View descendant) { 2286 if (descendant.includeForAccessibility()) { 2287 return descendant; 2288 } 2289 return null; 2290 } 2291 2292 /** 2293 * We want to draw a highlight around the current accessibility focused. 2294 * Since adding a style for all possible view is not a viable option we 2295 * have this specialized drawing method. 2296 * 2297 * Note: We are doing this here to be able to draw the highlight for 2298 * virtual views in addition to real ones. 2299 * 2300 * @param canvas The canvas on which to draw. 2301 */ 2302 private void drawAccessibilityFocusedDrawableIfNeeded(Canvas canvas) { 2303 AccessibilityManager manager = AccessibilityManager.getInstance(mView.mContext); 2304 if (!manager.isEnabled() || !manager.isTouchExplorationEnabled()) { 2305 return; 2306 } 2307 if (mAccessibilityFocusedHost == null || mAccessibilityFocusedHost.mAttachInfo == null) { 2308 return; 2309 } 2310 Drawable drawable = getAccessibilityFocusedDrawable(); 2311 if (drawable == null) { 2312 return; 2313 } 2314 AccessibilityNodeProvider provider = 2315 mAccessibilityFocusedHost.getAccessibilityNodeProvider(); 2316 Rect bounds = mView.mAttachInfo.mTmpInvalRect; 2317 if (provider == null) { 2318 mAccessibilityFocusedHost.getDrawingRect(bounds); 2319 if (mView instanceof ViewGroup) { 2320 ViewGroup viewGroup = (ViewGroup) mView; 2321 viewGroup.offsetDescendantRectToMyCoords(mAccessibilityFocusedHost, bounds); 2322 } 2323 } else { 2324 if (mAccessibilityFocusedVirtualView == null) { 2325 return; 2326 } 2327 mAccessibilityFocusedVirtualView.getBoundsInScreen(bounds); 2328 bounds.offset(-mAttachInfo.mWindowLeft, -mAttachInfo.mWindowTop); 2329 } 2330 drawable.setBounds(bounds); 2331 drawable.draw(canvas); 2332 } 2333 2334 private Drawable getAccessibilityFocusedDrawable() { 2335 if (mAttachInfo != null) { 2336 // Lazily load the accessibility focus drawable. 2337 if (mAttachInfo.mAccessibilityFocusDrawable == null) { 2338 TypedValue value = new TypedValue(); 2339 final boolean resolved = mView.mContext.getTheme().resolveAttribute( 2340 R.attr.accessibilityFocusedDrawable, value, true); 2341 if (resolved) { 2342 mAttachInfo.mAccessibilityFocusDrawable = 2343 mView.mContext.getResources().getDrawable(value.resourceId); 2344 } 2345 } 2346 return mAttachInfo.mAccessibilityFocusDrawable; 2347 } 2348 return null; 2349 } 2350 2351 void invalidateDisplayLists() { 2352 final ArrayList<DisplayList> displayLists = mDisplayLists; 2353 final int count = displayLists.size(); 2354 2355 for (int i = 0; i < count; i++) { 2356 final DisplayList displayList = displayLists.get(i); 2357 displayList.invalidate(); 2358 displayList.clear(); 2359 } 2360 2361 displayLists.clear(); 2362 } 2363 2364 boolean scrollToRectOrFocus(Rect rectangle, boolean immediate) { 2365 final View.AttachInfo attachInfo = mAttachInfo; 2366 final Rect ci = attachInfo.mContentInsets; 2367 final Rect vi = attachInfo.mVisibleInsets; 2368 int scrollY = 0; 2369 boolean handled = false; 2370 2371 if (vi.left > ci.left || vi.top > ci.top 2372 || vi.right > ci.right || vi.bottom > ci.bottom) { 2373 // We'll assume that we aren't going to change the scroll 2374 // offset, since we want to avoid that unless it is actually 2375 // going to make the focus visible... otherwise we scroll 2376 // all over the place. 2377 scrollY = mScrollY; 2378 // We can be called for two different situations: during a draw, 2379 // to update the scroll position if the focus has changed (in which 2380 // case 'rectangle' is null), or in response to a 2381 // requestChildRectangleOnScreen() call (in which case 'rectangle' 2382 // is non-null and we just want to scroll to whatever that 2383 // rectangle is). 2384 View focus = mRealFocusedView; 2385 2386 // When in touch mode, focus points to the previously focused view, 2387 // which may have been removed from the view hierarchy. The following 2388 // line checks whether the view is still in our hierarchy. 2389 if (focus == null || focus.mAttachInfo != mAttachInfo) { 2390 mRealFocusedView = null; 2391 return false; 2392 } 2393 2394 if (focus != mLastScrolledFocus) { 2395 // If the focus has changed, then ignore any requests to scroll 2396 // to a rectangle; first we want to make sure the entire focus 2397 // view is visible. 2398 rectangle = null; 2399 } 2400 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Eval scroll: focus=" + focus 2401 + " rectangle=" + rectangle + " ci=" + ci 2402 + " vi=" + vi); 2403 if (focus == mLastScrolledFocus && !mScrollMayChange 2404 && rectangle == null) { 2405 // Optimization: if the focus hasn't changed since last 2406 // time, and no layout has happened, then just leave things 2407 // as they are. 2408 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Keeping scroll y=" 2409 + mScrollY + " vi=" + vi.toShortString()); 2410 } else if (focus != null) { 2411 // We need to determine if the currently focused view is 2412 // within the visible part of the window and, if not, apply 2413 // a pan so it can be seen. 2414 mLastScrolledFocus = focus; 2415 mScrollMayChange = false; 2416 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Need to scroll?"); 2417 // Try to find the rectangle from the focus view. 2418 if (focus.getGlobalVisibleRect(mVisRect, null)) { 2419 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Root w=" 2420 + mView.getWidth() + " h=" + mView.getHeight() 2421 + " ci=" + ci.toShortString() 2422 + " vi=" + vi.toShortString()); 2423 if (rectangle == null) { 2424 focus.getFocusedRect(mTempRect); 2425 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Focus " + focus 2426 + ": focusRect=" + mTempRect.toShortString()); 2427 if (mView instanceof ViewGroup) { 2428 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 2429 focus, mTempRect); 2430 } 2431 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2432 "Focus in window: focusRect=" 2433 + mTempRect.toShortString() 2434 + " visRect=" + mVisRect.toShortString()); 2435 } else { 2436 mTempRect.set(rectangle); 2437 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2438 "Request scroll to rect: " 2439 + mTempRect.toShortString() 2440 + " visRect=" + mVisRect.toShortString()); 2441 } 2442 if (mTempRect.intersect(mVisRect)) { 2443 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2444 "Focus window visible rect: " 2445 + mTempRect.toShortString()); 2446 if (mTempRect.height() > 2447 (mView.getHeight()-vi.top-vi.bottom)) { 2448 // If the focus simply is not going to fit, then 2449 // best is probably just to leave things as-is. 2450 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2451 "Too tall; leaving scrollY=" + scrollY); 2452 } else if ((mTempRect.top-scrollY) < vi.top) { 2453 scrollY -= vi.top - (mTempRect.top-scrollY); 2454 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2455 "Top covered; scrollY=" + scrollY); 2456 } else if ((mTempRect.bottom-scrollY) 2457 > (mView.getHeight()-vi.bottom)) { 2458 scrollY += (mTempRect.bottom-scrollY) 2459 - (mView.getHeight()-vi.bottom); 2460 if (DEBUG_INPUT_RESIZE) Log.v(TAG, 2461 "Bottom covered; scrollY=" + scrollY); 2462 } 2463 handled = true; 2464 } 2465 } 2466 } 2467 } 2468 2469 if (scrollY != mScrollY) { 2470 if (DEBUG_INPUT_RESIZE) Log.v(TAG, "Pan scroll changed: old=" 2471 + mScrollY + " , new=" + scrollY); 2472 if (!immediate && mResizeBuffer == null) { 2473 if (mScroller == null) { 2474 mScroller = new Scroller(mView.getContext()); 2475 } 2476 mScroller.startScroll(0, mScrollY, 0, scrollY-mScrollY); 2477 } else if (mScroller != null) { 2478 mScroller.abortAnimation(); 2479 } 2480 mScrollY = scrollY; 2481 } 2482 2483 return handled; 2484 } 2485 2486 /** 2487 * @hide 2488 */ 2489 public View getAccessibilityFocusedHost() { 2490 return mAccessibilityFocusedHost; 2491 } 2492 2493 /** 2494 * @hide 2495 */ 2496 public AccessibilityNodeInfo getAccessibilityFocusedVirtualView() { 2497 return mAccessibilityFocusedVirtualView; 2498 } 2499 2500 void setAccessibilityFocus(View view, AccessibilityNodeInfo node) { 2501 // If we have a virtual view with accessibility focus we need 2502 // to clear the focus and invalidate the virtual view bounds. 2503 if (mAccessibilityFocusedVirtualView != null) { 2504 2505 AccessibilityNodeInfo focusNode = mAccessibilityFocusedVirtualView; 2506 View focusHost = mAccessibilityFocusedHost; 2507 focusHost.clearAccessibilityFocusNoCallbacks(); 2508 2509 // Wipe the state of the current accessibility focus since 2510 // the call into the provider to clear accessibility focus 2511 // will fire an accessibility event which will end up calling 2512 // this method and we want to have clean state when this 2513 // invocation happens. 2514 mAccessibilityFocusedHost = null; 2515 mAccessibilityFocusedVirtualView = null; 2516 2517 AccessibilityNodeProvider provider = focusHost.getAccessibilityNodeProvider(); 2518 if (provider != null) { 2519 // Invalidate the area of the cleared accessibility focus. 2520 focusNode.getBoundsInParent(mTempRect); 2521 focusHost.invalidate(mTempRect); 2522 // Clear accessibility focus in the virtual node. 2523 final int virtualNodeId = AccessibilityNodeInfo.getVirtualDescendantId( 2524 focusNode.getSourceNodeId()); 2525 provider.performAction(virtualNodeId, 2526 AccessibilityNodeInfo.ACTION_CLEAR_ACCESSIBILITY_FOCUS, null); 2527 } 2528 focusNode.recycle(); 2529 } 2530 if (mAccessibilityFocusedHost != null) { 2531 // Clear accessibility focus in the view. 2532 mAccessibilityFocusedHost.clearAccessibilityFocusNoCallbacks(); 2533 } 2534 2535 // Set the new focus host and node. 2536 mAccessibilityFocusedHost = view; 2537 mAccessibilityFocusedVirtualView = node; 2538 } 2539 2540 public void requestChildFocus(View child, View focused) { 2541 checkThread(); 2542 2543 if (DEBUG_INPUT_RESIZE) { 2544 Log.v(TAG, "Request child focus: focus now " + focused); 2545 } 2546 2547 mAttachInfo.mTreeObserver.dispatchOnGlobalFocusChange(mOldFocusedView, focused); 2548 scheduleTraversals(); 2549 2550 mFocusedView = mRealFocusedView = focused; 2551 } 2552 2553 public void clearChildFocus(View child) { 2554 checkThread(); 2555 2556 if (DEBUG_INPUT_RESIZE) { 2557 Log.v(TAG, "Clearing child focus"); 2558 } 2559 2560 mOldFocusedView = mFocusedView; 2561 2562 // Invoke the listener only if there is no view to take focus 2563 if (focusSearch(null, View.FOCUS_FORWARD) == null) { 2564 mAttachInfo.mTreeObserver.dispatchOnGlobalFocusChange(mOldFocusedView, null); 2565 } 2566 2567 mFocusedView = mRealFocusedView = null; 2568 } 2569 2570 @Override 2571 public ViewParent getParentForAccessibility() { 2572 return null; 2573 } 2574 2575 public void focusableViewAvailable(View v) { 2576 checkThread(); 2577 if (mView != null) { 2578 if (!mView.hasFocus()) { 2579 v.requestFocus(); 2580 } else { 2581 // the one case where will transfer focus away from the current one 2582 // is if the current view is a view group that prefers to give focus 2583 // to its children first AND the view is a descendant of it. 2584 mFocusedView = mView.findFocus(); 2585 boolean descendantsHaveDibsOnFocus = 2586 (mFocusedView instanceof ViewGroup) && 2587 (((ViewGroup) mFocusedView).getDescendantFocusability() == 2588 ViewGroup.FOCUS_AFTER_DESCENDANTS); 2589 if (descendantsHaveDibsOnFocus && isViewDescendantOf(v, mFocusedView)) { 2590 // If a view gets the focus, the listener will be invoked from requestChildFocus() 2591 v.requestFocus(); 2592 } 2593 } 2594 } 2595 } 2596 2597 public void recomputeViewAttributes(View child) { 2598 checkThread(); 2599 if (mView == child) { 2600 mAttachInfo.mRecomputeGlobalAttributes = true; 2601 if (!mWillDrawSoon) { 2602 scheduleTraversals(); 2603 } 2604 } 2605 } 2606 2607 void dispatchDetachedFromWindow() { 2608 if (mView != null && mView.mAttachInfo != null) { 2609 if (mAttachInfo.mHardwareRenderer != null && 2610 mAttachInfo.mHardwareRenderer.isEnabled()) { 2611 mAttachInfo.mHardwareRenderer.validate(); 2612 } 2613 mView.dispatchDetachedFromWindow(); 2614 } 2615 2616 mAccessibilityInteractionConnectionManager.ensureNoConnection(); 2617 mAccessibilityManager.removeAccessibilityStateChangeListener( 2618 mAccessibilityInteractionConnectionManager); 2619 removeSendWindowContentChangedCallback(); 2620 2621 destroyHardwareRenderer(); 2622 2623 setAccessibilityFocus(null, null); 2624 2625 mView = null; 2626 mAttachInfo.mRootView = null; 2627 mAttachInfo.mSurface = null; 2628 2629 mSurface.release(); 2630 2631 if (mInputQueueCallback != null && mInputQueue != null) { 2632 mInputQueueCallback.onInputQueueDestroyed(mInputQueue); 2633 mInputQueueCallback = null; 2634 mInputQueue = null; 2635 } else if (mInputEventReceiver != null) { 2636 mInputEventReceiver.dispose(); 2637 mInputEventReceiver = null; 2638 } 2639 try { 2640 sWindowSession.remove(mWindow); 2641 } catch (RemoteException e) { 2642 } 2643 2644 // Dispose the input channel after removing the window so the Window Manager 2645 // doesn't interpret the input channel being closed as an abnormal termination. 2646 if (mInputChannel != null) { 2647 mInputChannel.dispose(); 2648 mInputChannel = null; 2649 } 2650 2651 unscheduleTraversals(); 2652 } 2653 2654 void updateConfiguration(Configuration config, boolean force) { 2655 if (DEBUG_CONFIGURATION) Log.v(TAG, 2656 "Applying new config to window " 2657 + mWindowAttributes.getTitle() 2658 + ": " + config); 2659 2660 CompatibilityInfo ci = mCompatibilityInfo.getIfNeeded(); 2661 if (ci != null) { 2662 config = new Configuration(config); 2663 ci.applyToConfiguration(config); 2664 } 2665 2666 synchronized (sConfigCallbacks) { 2667 for (int i=sConfigCallbacks.size()-1; i>=0; i--) { 2668 sConfigCallbacks.get(i).onConfigurationChanged(config); 2669 } 2670 } 2671 if (mView != null) { 2672 // At this point the resources have been updated to 2673 // have the most recent config, whatever that is. Use 2674 // the on in them which may be newer. 2675 config = mView.getResources().getConfiguration(); 2676 if (force || mLastConfiguration.diff(config) != 0) { 2677 mLastConfiguration.setTo(config); 2678 mView.dispatchConfigurationChanged(config); 2679 } 2680 } 2681 } 2682 2683 /** 2684 * Return true if child is an ancestor of parent, (or equal to the parent). 2685 */ 2686 public static boolean isViewDescendantOf(View child, View parent) { 2687 if (child == parent) { 2688 return true; 2689 } 2690 2691 final ViewParent theParent = child.getParent(); 2692 return (theParent instanceof ViewGroup) && isViewDescendantOf((View) theParent, parent); 2693 } 2694 2695 private static void forceLayout(View view) { 2696 view.forceLayout(); 2697 if (view instanceof ViewGroup) { 2698 ViewGroup group = (ViewGroup) view; 2699 final int count = group.getChildCount(); 2700 for (int i = 0; i < count; i++) { 2701 forceLayout(group.getChildAt(i)); 2702 } 2703 } 2704 } 2705 2706 private final static int MSG_INVALIDATE = 1; 2707 private final static int MSG_INVALIDATE_RECT = 2; 2708 private final static int MSG_DIE = 3; 2709 private final static int MSG_RESIZED = 4; 2710 private final static int MSG_RESIZED_REPORT = 5; 2711 private final static int MSG_WINDOW_FOCUS_CHANGED = 6; 2712 private final static int MSG_DISPATCH_KEY = 7; 2713 private final static int MSG_DISPATCH_APP_VISIBILITY = 8; 2714 private final static int MSG_DISPATCH_GET_NEW_SURFACE = 9; 2715 private final static int MSG_IME_FINISHED_EVENT = 10; 2716 private final static int MSG_DISPATCH_KEY_FROM_IME = 11; 2717 private final static int MSG_FINISH_INPUT_CONNECTION = 12; 2718 private final static int MSG_CHECK_FOCUS = 13; 2719 private final static int MSG_CLOSE_SYSTEM_DIALOGS = 14; 2720 private final static int MSG_DISPATCH_DRAG_EVENT = 15; 2721 private final static int MSG_DISPATCH_DRAG_LOCATION_EVENT = 16; 2722 private final static int MSG_DISPATCH_SYSTEM_UI_VISIBILITY = 17; 2723 private final static int MSG_UPDATE_CONFIGURATION = 18; 2724 private final static int MSG_PROCESS_INPUT_EVENTS = 19; 2725 private final static int MSG_DISPATCH_SCREEN_STATE = 20; 2726 private final static int MSG_INVALIDATE_DISPLAY_LIST = 21; 2727 private final static int MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST = 22; 2728 private final static int MSG_DISPATCH_DONE_ANIMATING = 23; 2729 private final static int MSG_INVALIDATE_WORLD = 24; 2730 2731 final class ViewRootHandler extends Handler { 2732 @Override 2733 public String getMessageName(Message message) { 2734 switch (message.what) { 2735 case MSG_INVALIDATE: 2736 return "MSG_INVALIDATE"; 2737 case MSG_INVALIDATE_RECT: 2738 return "MSG_INVALIDATE_RECT"; 2739 case MSG_DIE: 2740 return "MSG_DIE"; 2741 case MSG_RESIZED: 2742 return "MSG_RESIZED"; 2743 case MSG_RESIZED_REPORT: 2744 return "MSG_RESIZED_REPORT"; 2745 case MSG_WINDOW_FOCUS_CHANGED: 2746 return "MSG_WINDOW_FOCUS_CHANGED"; 2747 case MSG_DISPATCH_KEY: 2748 return "MSG_DISPATCH_KEY"; 2749 case MSG_DISPATCH_APP_VISIBILITY: 2750 return "MSG_DISPATCH_APP_VISIBILITY"; 2751 case MSG_DISPATCH_GET_NEW_SURFACE: 2752 return "MSG_DISPATCH_GET_NEW_SURFACE"; 2753 case MSG_IME_FINISHED_EVENT: 2754 return "MSG_IME_FINISHED_EVENT"; 2755 case MSG_DISPATCH_KEY_FROM_IME: 2756 return "MSG_DISPATCH_KEY_FROM_IME"; 2757 case MSG_FINISH_INPUT_CONNECTION: 2758 return "MSG_FINISH_INPUT_CONNECTION"; 2759 case MSG_CHECK_FOCUS: 2760 return "MSG_CHECK_FOCUS"; 2761 case MSG_CLOSE_SYSTEM_DIALOGS: 2762 return "MSG_CLOSE_SYSTEM_DIALOGS"; 2763 case MSG_DISPATCH_DRAG_EVENT: 2764 return "MSG_DISPATCH_DRAG_EVENT"; 2765 case MSG_DISPATCH_DRAG_LOCATION_EVENT: 2766 return "MSG_DISPATCH_DRAG_LOCATION_EVENT"; 2767 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: 2768 return "MSG_DISPATCH_SYSTEM_UI_VISIBILITY"; 2769 case MSG_UPDATE_CONFIGURATION: 2770 return "MSG_UPDATE_CONFIGURATION"; 2771 case MSG_PROCESS_INPUT_EVENTS: 2772 return "MSG_PROCESS_INPUT_EVENTS"; 2773 case MSG_DISPATCH_SCREEN_STATE: 2774 return "MSG_DISPATCH_SCREEN_STATE"; 2775 case MSG_INVALIDATE_DISPLAY_LIST: 2776 return "MSG_INVALIDATE_DISPLAY_LIST"; 2777 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: 2778 return "MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST"; 2779 case MSG_DISPATCH_DONE_ANIMATING: 2780 return "MSG_DISPATCH_DONE_ANIMATING"; 2781 } 2782 return super.getMessageName(message); 2783 } 2784 2785 @Override 2786 public void handleMessage(Message msg) { 2787 switch (msg.what) { 2788 case MSG_INVALIDATE: 2789 ((View) msg.obj).invalidate(); 2790 break; 2791 case MSG_INVALIDATE_RECT: 2792 final View.AttachInfo.InvalidateInfo info = (View.AttachInfo.InvalidateInfo) msg.obj; 2793 info.target.invalidate(info.left, info.top, info.right, info.bottom); 2794 info.release(); 2795 break; 2796 case MSG_IME_FINISHED_EVENT: 2797 handleImeFinishedEvent(msg.arg1, msg.arg2 != 0); 2798 break; 2799 case MSG_PROCESS_INPUT_EVENTS: 2800 mProcessInputEventsScheduled = false; 2801 doProcessInputEvents(); 2802 break; 2803 case MSG_DISPATCH_APP_VISIBILITY: 2804 handleAppVisibility(msg.arg1 != 0); 2805 break; 2806 case MSG_DISPATCH_GET_NEW_SURFACE: 2807 handleGetNewSurface(); 2808 break; 2809 case MSG_RESIZED: 2810 ResizedInfo ri = (ResizedInfo)msg.obj; 2811 2812 if (mWinFrame.width() == msg.arg1 && mWinFrame.height() == msg.arg2 2813 && mPendingContentInsets.equals(ri.contentInsets) 2814 && mPendingVisibleInsets.equals(ri.visibleInsets) 2815 && ((ResizedInfo)msg.obj).newConfig == null) { 2816 break; 2817 } 2818 // fall through... 2819 case MSG_RESIZED_REPORT: 2820 if (mAdded) { 2821 Configuration config = ((ResizedInfo)msg.obj).newConfig; 2822 if (config != null) { 2823 updateConfiguration(config, false); 2824 } 2825 mWinFrame.left = 0; 2826 mWinFrame.right = msg.arg1; 2827 mWinFrame.top = 0; 2828 mWinFrame.bottom = msg.arg2; 2829 mPendingContentInsets.set(((ResizedInfo)msg.obj).contentInsets); 2830 mPendingVisibleInsets.set(((ResizedInfo)msg.obj).visibleInsets); 2831 if (msg.what == MSG_RESIZED_REPORT) { 2832 mReportNextDraw = true; 2833 } 2834 2835 if (mView != null) { 2836 forceLayout(mView); 2837 } 2838 requestLayout(); 2839 } 2840 break; 2841 case MSG_WINDOW_FOCUS_CHANGED: { 2842 if (mAdded) { 2843 boolean hasWindowFocus = msg.arg1 != 0; 2844 mAttachInfo.mHasWindowFocus = hasWindowFocus; 2845 2846 profileRendering(hasWindowFocus); 2847 2848 if (hasWindowFocus) { 2849 boolean inTouchMode = msg.arg2 != 0; 2850 ensureTouchModeLocally(inTouchMode); 2851 2852 if (mAttachInfo.mHardwareRenderer != null && 2853 mSurface != null && mSurface.isValid()) { 2854 mFullRedrawNeeded = true; 2855 try { 2856 mAttachInfo.mHardwareRenderer.initializeIfNeeded(mWidth, mHeight, 2857 mHolder); 2858 } catch (Surface.OutOfResourcesException e) { 2859 Log.e(TAG, "OutOfResourcesException locking surface", e); 2860 try { 2861 if (!sWindowSession.outOfMemory(mWindow)) { 2862 Slog.w(TAG, "No processes killed for memory; killing self"); 2863 Process.killProcess(Process.myPid()); 2864 } 2865 } catch (RemoteException ex) { 2866 } 2867 // Retry in a bit. 2868 sendMessageDelayed(obtainMessage(msg.what, msg.arg1, msg.arg2), 500); 2869 return; 2870 } 2871 } 2872 } 2873 2874 mLastWasImTarget = WindowManager.LayoutParams 2875 .mayUseInputMethod(mWindowAttributes.flags); 2876 2877 InputMethodManager imm = InputMethodManager.peekInstance(); 2878 if (mView != null) { 2879 if (hasWindowFocus && imm != null && mLastWasImTarget) { 2880 imm.startGettingWindowFocus(mView); 2881 } 2882 mAttachInfo.mKeyDispatchState.reset(); 2883 mView.dispatchWindowFocusChanged(hasWindowFocus); 2884 } 2885 2886 // Note: must be done after the focus change callbacks, 2887 // so all of the view state is set up correctly. 2888 if (hasWindowFocus) { 2889 if (imm != null && mLastWasImTarget) { 2890 imm.onWindowFocus(mView, mView.findFocus(), 2891 mWindowAttributes.softInputMode, 2892 !mHasHadWindowFocus, mWindowAttributes.flags); 2893 } 2894 // Clear the forward bit. We can just do this directly, since 2895 // the window manager doesn't care about it. 2896 mWindowAttributes.softInputMode &= 2897 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 2898 ((WindowManager.LayoutParams)mView.getLayoutParams()) 2899 .softInputMode &= 2900 ~WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION; 2901 mHasHadWindowFocus = true; 2902 } 2903 2904 setAccessibilityFocus(null, null); 2905 2906 if (mView != null && mAccessibilityManager.isEnabled()) { 2907 if (hasWindowFocus) { 2908 mView.sendAccessibilityEvent( 2909 AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 2910 } 2911 } 2912 } 2913 } break; 2914 case MSG_DIE: 2915 doDie(); 2916 break; 2917 case MSG_DISPATCH_KEY: { 2918 KeyEvent event = (KeyEvent)msg.obj; 2919 enqueueInputEvent(event, null, 0, true); 2920 } break; 2921 case MSG_DISPATCH_KEY_FROM_IME: { 2922 if (LOCAL_LOGV) Log.v( 2923 TAG, "Dispatching key " 2924 + msg.obj + " from IME to " + mView); 2925 KeyEvent event = (KeyEvent)msg.obj; 2926 if ((event.getFlags()&KeyEvent.FLAG_FROM_SYSTEM) != 0) { 2927 // The IME is trying to say this event is from the 2928 // system! Bad bad bad! 2929 //noinspection UnusedAssignment 2930 event = KeyEvent.changeFlags(event, event.getFlags() & ~KeyEvent.FLAG_FROM_SYSTEM); 2931 } 2932 enqueueInputEvent(event, null, QueuedInputEvent.FLAG_DELIVER_POST_IME, true); 2933 } break; 2934 case MSG_FINISH_INPUT_CONNECTION: { 2935 InputMethodManager imm = InputMethodManager.peekInstance(); 2936 if (imm != null) { 2937 imm.reportFinishInputConnection((InputConnection)msg.obj); 2938 } 2939 } break; 2940 case MSG_CHECK_FOCUS: { 2941 InputMethodManager imm = InputMethodManager.peekInstance(); 2942 if (imm != null) { 2943 imm.checkFocus(); 2944 } 2945 } break; 2946 case MSG_CLOSE_SYSTEM_DIALOGS: { 2947 if (mView != null) { 2948 mView.onCloseSystemDialogs((String)msg.obj); 2949 } 2950 } break; 2951 case MSG_DISPATCH_DRAG_EVENT: 2952 case MSG_DISPATCH_DRAG_LOCATION_EVENT: { 2953 DragEvent event = (DragEvent)msg.obj; 2954 event.mLocalState = mLocalDragState; // only present when this app called startDrag() 2955 handleDragEvent(event); 2956 } break; 2957 case MSG_DISPATCH_SYSTEM_UI_VISIBILITY: { 2958 handleDispatchSystemUiVisibilityChanged((SystemUiVisibilityInfo)msg.obj); 2959 } break; 2960 case MSG_UPDATE_CONFIGURATION: { 2961 Configuration config = (Configuration)msg.obj; 2962 if (config.isOtherSeqNewer(mLastConfiguration)) { 2963 config = mLastConfiguration; 2964 } 2965 updateConfiguration(config, false); 2966 } break; 2967 case MSG_DISPATCH_SCREEN_STATE: { 2968 if (mView != null) { 2969 handleScreenStateChange(msg.arg1 == 1); 2970 } 2971 } break; 2972 case MSG_INVALIDATE_DISPLAY_LIST: { 2973 invalidateDisplayLists(); 2974 } break; 2975 case MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST: { 2976 setAccessibilityFocus(null, null); 2977 } break; 2978 case MSG_DISPATCH_DONE_ANIMATING: { 2979 handleDispatchDoneAnimating(); 2980 } break; 2981 case MSG_INVALIDATE_WORLD: { 2982 invalidateWorld(mView); 2983 } break; 2984 } 2985 } 2986 } 2987 2988 final ViewRootHandler mHandler = new ViewRootHandler(); 2989 2990 /** 2991 * Something in the current window tells us we need to change the touch mode. For 2992 * example, we are not in touch mode, and the user touches the screen. 2993 * 2994 * If the touch mode has changed, tell the window manager, and handle it locally. 2995 * 2996 * @param inTouchMode Whether we want to be in touch mode. 2997 * @return True if the touch mode changed and focus changed was changed as a result 2998 */ 2999 boolean ensureTouchMode(boolean inTouchMode) { 3000 if (DBG) Log.d("touchmode", "ensureTouchMode(" + inTouchMode + "), current " 3001 + "touch mode is " + mAttachInfo.mInTouchMode); 3002 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3003 3004 // tell the window manager 3005 try { 3006 sWindowSession.setInTouchMode(inTouchMode); 3007 } catch (RemoteException e) { 3008 throw new RuntimeException(e); 3009 } 3010 3011 // handle the change 3012 return ensureTouchModeLocally(inTouchMode); 3013 } 3014 3015 /** 3016 * Ensure that the touch mode for this window is set, and if it is changing, 3017 * take the appropriate action. 3018 * @param inTouchMode Whether we want to be in touch mode. 3019 * @return True if the touch mode changed and focus changed was changed as a result 3020 */ 3021 private boolean ensureTouchModeLocally(boolean inTouchMode) { 3022 if (DBG) Log.d("touchmode", "ensureTouchModeLocally(" + inTouchMode + "), current " 3023 + "touch mode is " + mAttachInfo.mInTouchMode); 3024 3025 if (mAttachInfo.mInTouchMode == inTouchMode) return false; 3026 3027 mAttachInfo.mInTouchMode = inTouchMode; 3028 mAttachInfo.mTreeObserver.dispatchOnTouchModeChanged(inTouchMode); 3029 3030 return (inTouchMode) ? enterTouchMode() : leaveTouchMode(); 3031 } 3032 3033 private boolean enterTouchMode() { 3034 if (mView != null) { 3035 if (mView.hasFocus()) { 3036 // note: not relying on mFocusedView here because this could 3037 // be when the window is first being added, and mFocused isn't 3038 // set yet. 3039 final View focused = mView.findFocus(); 3040 if (focused != null && !focused.isFocusableInTouchMode()) { 3041 3042 final ViewGroup ancestorToTakeFocus = 3043 findAncestorToTakeFocusInTouchMode(focused); 3044 if (ancestorToTakeFocus != null) { 3045 // there is an ancestor that wants focus after its descendants that 3046 // is focusable in touch mode.. give it focus 3047 return ancestorToTakeFocus.requestFocus(); 3048 } else { 3049 // nothing appropriate to have focus in touch mode, clear it out 3050 mView.unFocus(); 3051 mAttachInfo.mTreeObserver.dispatchOnGlobalFocusChange(focused, null); 3052 mFocusedView = null; 3053 mOldFocusedView = null; 3054 return true; 3055 } 3056 } 3057 } 3058 } 3059 return false; 3060 } 3061 3062 /** 3063 * Find an ancestor of focused that wants focus after its descendants and is 3064 * focusable in touch mode. 3065 * @param focused The currently focused view. 3066 * @return An appropriate view, or null if no such view exists. 3067 */ 3068 private static ViewGroup findAncestorToTakeFocusInTouchMode(View focused) { 3069 ViewParent parent = focused.getParent(); 3070 while (parent instanceof ViewGroup) { 3071 final ViewGroup vgParent = (ViewGroup) parent; 3072 if (vgParent.getDescendantFocusability() == ViewGroup.FOCUS_AFTER_DESCENDANTS 3073 && vgParent.isFocusableInTouchMode()) { 3074 return vgParent; 3075 } 3076 if (vgParent.isRootNamespace()) { 3077 return null; 3078 } else { 3079 parent = vgParent.getParent(); 3080 } 3081 } 3082 return null; 3083 } 3084 3085 private boolean leaveTouchMode() { 3086 if (mView != null) { 3087 if (mView.hasFocus()) { 3088 // i learned the hard way to not trust mFocusedView :) 3089 mFocusedView = mView.findFocus(); 3090 if (!(mFocusedView instanceof ViewGroup)) { 3091 // some view has focus, let it keep it 3092 return false; 3093 } else if (((ViewGroup)mFocusedView).getDescendantFocusability() != 3094 ViewGroup.FOCUS_AFTER_DESCENDANTS) { 3095 // some view group has focus, and doesn't prefer its children 3096 // over itself for focus, so let them keep it. 3097 return false; 3098 } 3099 } 3100 3101 // find the best view to give focus to in this brave new non-touch-mode 3102 // world 3103 final View focused = focusSearch(null, View.FOCUS_DOWN); 3104 if (focused != null) { 3105 return focused.requestFocus(View.FOCUS_DOWN); 3106 } 3107 } 3108 return false; 3109 } 3110 3111 private void deliverInputEvent(QueuedInputEvent q) { 3112 Trace.traceBegin(Trace.TRACE_TAG_VIEW, "deliverInputEvent"); 3113 try { 3114 if (q.mEvent instanceof KeyEvent) { 3115 deliverKeyEvent(q); 3116 } else { 3117 final int source = q.mEvent.getSource(); 3118 if ((source & InputDevice.SOURCE_CLASS_POINTER) != 0) { 3119 deliverPointerEvent(q); 3120 } else if ((source & InputDevice.SOURCE_CLASS_TRACKBALL) != 0) { 3121 deliverTrackballEvent(q); 3122 } else { 3123 deliverGenericMotionEvent(q); 3124 } 3125 } 3126 } finally { 3127 Trace.traceEnd(Trace.TRACE_TAG_VIEW); 3128 } 3129 } 3130 3131 private void deliverPointerEvent(QueuedInputEvent q) { 3132 final MotionEvent event = (MotionEvent)q.mEvent; 3133 final boolean isTouchEvent = event.isTouchEvent(); 3134 if (mInputEventConsistencyVerifier != null) { 3135 if (isTouchEvent) { 3136 mInputEventConsistencyVerifier.onTouchEvent(event, 0); 3137 } else { 3138 mInputEventConsistencyVerifier.onGenericMotionEvent(event, 0); 3139 } 3140 } 3141 3142 // If there is no view, then the event will not be handled. 3143 if (mView == null || !mAdded) { 3144 finishInputEvent(q, false); 3145 return; 3146 } 3147 3148 // Translate the pointer event for compatibility, if needed. 3149 if (mTranslator != null) { 3150 mTranslator.translateEventInScreenToAppWindow(event); 3151 } 3152 3153 // Enter touch mode on down or scroll. 3154 final int action = event.getAction(); 3155 if (action == MotionEvent.ACTION_DOWN || action == MotionEvent.ACTION_SCROLL) { 3156 ensureTouchMode(true); 3157 } 3158 3159 // Offset the scroll position. 3160 if (mCurScrollY != 0) { 3161 event.offsetLocation(0, mCurScrollY); 3162 } 3163 if (MEASURE_LATENCY) { 3164 lt.sample("A Dispatching PointerEvents", System.nanoTime() - event.getEventTimeNano()); 3165 } 3166 3167 // Remember the touch position for possible drag-initiation. 3168 if (isTouchEvent) { 3169 mLastTouchPoint.x = event.getRawX(); 3170 mLastTouchPoint.y = event.getRawY(); 3171 } 3172 3173 // Dispatch touch to view hierarchy. 3174 boolean handled = mView.dispatchPointerEvent(event); 3175 if (MEASURE_LATENCY) { 3176 lt.sample("B Dispatched PointerEvents ", System.nanoTime() - event.getEventTimeNano()); 3177 } 3178 if (handled) { 3179 finishInputEvent(q, true); 3180 return; 3181 } 3182 3183 // Pointer event was unhandled. 3184 finishInputEvent(q, false); 3185 } 3186 3187 private void deliverTrackballEvent(QueuedInputEvent q) { 3188 final MotionEvent event = (MotionEvent)q.mEvent; 3189 if (mInputEventConsistencyVerifier != null) { 3190 mInputEventConsistencyVerifier.onTrackballEvent(event, 0); 3191 } 3192 3193 // If there is no view, then the event will not be handled. 3194 if (mView == null || !mAdded) { 3195 finishInputEvent(q, false); 3196 return; 3197 } 3198 3199 // Deliver the trackball event to the view. 3200 if (mView.dispatchTrackballEvent(event)) { 3201 // If we reach this, we delivered a trackball event to mView and 3202 // mView consumed it. Because we will not translate the trackball 3203 // event into a key event, touch mode will not exit, so we exit 3204 // touch mode here. 3205 ensureTouchMode(false); 3206 3207 finishInputEvent(q, true); 3208 mLastTrackballTime = Integer.MIN_VALUE; 3209 return; 3210 } 3211 3212 // Translate the trackball event into DPAD keys and try to deliver those. 3213 final TrackballAxis x = mTrackballAxisX; 3214 final TrackballAxis y = mTrackballAxisY; 3215 3216 long curTime = SystemClock.uptimeMillis(); 3217 if ((mLastTrackballTime + MAX_TRACKBALL_DELAY) < curTime) { 3218 // It has been too long since the last movement, 3219 // so restart at the beginning. 3220 x.reset(0); 3221 y.reset(0); 3222 mLastTrackballTime = curTime; 3223 } 3224 3225 final int action = event.getAction(); 3226 final int metaState = event.getMetaState(); 3227 switch (action) { 3228 case MotionEvent.ACTION_DOWN: 3229 x.reset(2); 3230 y.reset(2); 3231 enqueueInputEvent(new KeyEvent(curTime, curTime, 3232 KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 3233 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 3234 InputDevice.SOURCE_KEYBOARD)); 3235 break; 3236 case MotionEvent.ACTION_UP: 3237 x.reset(2); 3238 y.reset(2); 3239 enqueueInputEvent(new KeyEvent(curTime, curTime, 3240 KeyEvent.ACTION_UP, KeyEvent.KEYCODE_DPAD_CENTER, 0, metaState, 3241 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 3242 InputDevice.SOURCE_KEYBOARD)); 3243 break; 3244 } 3245 3246 if (DEBUG_TRACKBALL) Log.v(TAG, "TB X=" + x.position + " step=" 3247 + x.step + " dir=" + x.dir + " acc=" + x.acceleration 3248 + " move=" + event.getX() 3249 + " / Y=" + y.position + " step=" 3250 + y.step + " dir=" + y.dir + " acc=" + y.acceleration 3251 + " move=" + event.getY()); 3252 final float xOff = x.collect(event.getX(), event.getEventTime(), "X"); 3253 final float yOff = y.collect(event.getY(), event.getEventTime(), "Y"); 3254 3255 // Generate DPAD events based on the trackball movement. 3256 // We pick the axis that has moved the most as the direction of 3257 // the DPAD. When we generate DPAD events for one axis, then the 3258 // other axis is reset -- we don't want to perform DPAD jumps due 3259 // to slight movements in the trackball when making major movements 3260 // along the other axis. 3261 int keycode = 0; 3262 int movement = 0; 3263 float accel = 1; 3264 if (xOff > yOff) { 3265 movement = x.generate((2/event.getXPrecision())); 3266 if (movement != 0) { 3267 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_RIGHT 3268 : KeyEvent.KEYCODE_DPAD_LEFT; 3269 accel = x.acceleration; 3270 y.reset(2); 3271 } 3272 } else if (yOff > 0) { 3273 movement = y.generate((2/event.getYPrecision())); 3274 if (movement != 0) { 3275 keycode = movement > 0 ? KeyEvent.KEYCODE_DPAD_DOWN 3276 : KeyEvent.KEYCODE_DPAD_UP; 3277 accel = y.acceleration; 3278 x.reset(2); 3279 } 3280 } 3281 3282 if (keycode != 0) { 3283 if (movement < 0) movement = -movement; 3284 int accelMovement = (int)(movement * accel); 3285 if (DEBUG_TRACKBALL) Log.v(TAG, "Move: movement=" + movement 3286 + " accelMovement=" + accelMovement 3287 + " accel=" + accel); 3288 if (accelMovement > movement) { 3289 if (DEBUG_TRACKBALL) Log.v("foo", "Delivering fake DPAD: " 3290 + keycode); 3291 movement--; 3292 int repeatCount = accelMovement - movement; 3293 enqueueInputEvent(new KeyEvent(curTime, curTime, 3294 KeyEvent.ACTION_MULTIPLE, keycode, repeatCount, metaState, 3295 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 3296 InputDevice.SOURCE_KEYBOARD)); 3297 } 3298 while (movement > 0) { 3299 if (DEBUG_TRACKBALL) Log.v("foo", "Delivering fake DPAD: " 3300 + keycode); 3301 movement--; 3302 curTime = SystemClock.uptimeMillis(); 3303 enqueueInputEvent(new KeyEvent(curTime, curTime, 3304 KeyEvent.ACTION_DOWN, keycode, 0, metaState, 3305 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 3306 InputDevice.SOURCE_KEYBOARD)); 3307 enqueueInputEvent(new KeyEvent(curTime, curTime, 3308 KeyEvent.ACTION_UP, keycode, 0, metaState, 3309 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, KeyEvent.FLAG_FALLBACK, 3310 InputDevice.SOURCE_KEYBOARD)); 3311 } 3312 mLastTrackballTime = curTime; 3313 } 3314 3315 // Unfortunately we can't tell whether the application consumed the keys, so 3316 // we always consider the trackball event handled. 3317 finishInputEvent(q, true); 3318 } 3319 3320 private void deliverGenericMotionEvent(QueuedInputEvent q) { 3321 final MotionEvent event = (MotionEvent)q.mEvent; 3322 if (mInputEventConsistencyVerifier != null) { 3323 mInputEventConsistencyVerifier.onGenericMotionEvent(event, 0); 3324 } 3325 3326 final int source = event.getSource(); 3327 final boolean isJoystick = (source & InputDevice.SOURCE_CLASS_JOYSTICK) != 0; 3328 3329 // If there is no view, then the event will not be handled. 3330 if (mView == null || !mAdded) { 3331 if (isJoystick) { 3332 updateJoystickDirection(event, false); 3333 } 3334 finishInputEvent(q, false); 3335 return; 3336 } 3337 3338 // Deliver the event to the view. 3339 if (mView.dispatchGenericMotionEvent(event)) { 3340 if (isJoystick) { 3341 updateJoystickDirection(event, false); 3342 } 3343 finishInputEvent(q, true); 3344 return; 3345 } 3346 3347 if (isJoystick) { 3348 // Translate the joystick event into DPAD keys and try to deliver those. 3349 updateJoystickDirection(event, true); 3350 finishInputEvent(q, true); 3351 } else { 3352 finishInputEvent(q, false); 3353 } 3354 } 3355 3356 private void updateJoystickDirection(MotionEvent event, boolean synthesizeNewKeys) { 3357 final long time = event.getEventTime(); 3358 final int metaState = event.getMetaState(); 3359 final int deviceId = event.getDeviceId(); 3360 final int source = event.getSource(); 3361 3362 int xDirection = joystickAxisValueToDirection(event.getAxisValue(MotionEvent.AXIS_HAT_X)); 3363 if (xDirection == 0) { 3364 xDirection = joystickAxisValueToDirection(event.getX()); 3365 } 3366 3367 int yDirection = joystickAxisValueToDirection(event.getAxisValue(MotionEvent.AXIS_HAT_Y)); 3368 if (yDirection == 0) { 3369 yDirection = joystickAxisValueToDirection(event.getY()); 3370 } 3371 3372 if (xDirection != mLastJoystickXDirection) { 3373 if (mLastJoystickXKeyCode != 0) { 3374 enqueueInputEvent(new KeyEvent(time, time, 3375 KeyEvent.ACTION_UP, mLastJoystickXKeyCode, 0, metaState, 3376 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 3377 mLastJoystickXKeyCode = 0; 3378 } 3379 3380 mLastJoystickXDirection = xDirection; 3381 3382 if (xDirection != 0 && synthesizeNewKeys) { 3383 mLastJoystickXKeyCode = xDirection > 0 3384 ? KeyEvent.KEYCODE_DPAD_RIGHT : KeyEvent.KEYCODE_DPAD_LEFT; 3385 enqueueInputEvent(new KeyEvent(time, time, 3386 KeyEvent.ACTION_DOWN, mLastJoystickXKeyCode, 0, metaState, 3387 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 3388 } 3389 } 3390 3391 if (yDirection != mLastJoystickYDirection) { 3392 if (mLastJoystickYKeyCode != 0) { 3393 enqueueInputEvent(new KeyEvent(time, time, 3394 KeyEvent.ACTION_UP, mLastJoystickYKeyCode, 0, metaState, 3395 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 3396 mLastJoystickYKeyCode = 0; 3397 } 3398 3399 mLastJoystickYDirection = yDirection; 3400 3401 if (yDirection != 0 && synthesizeNewKeys) { 3402 mLastJoystickYKeyCode = yDirection > 0 3403 ? KeyEvent.KEYCODE_DPAD_DOWN : KeyEvent.KEYCODE_DPAD_UP; 3404 enqueueInputEvent(new KeyEvent(time, time, 3405 KeyEvent.ACTION_DOWN, mLastJoystickYKeyCode, 0, metaState, 3406 deviceId, 0, KeyEvent.FLAG_FALLBACK, source)); 3407 } 3408 } 3409 } 3410 3411 private static int joystickAxisValueToDirection(float value) { 3412 if (value >= 0.5f) { 3413 return 1; 3414 } else if (value <= -0.5f) { 3415 return -1; 3416 } else { 3417 return 0; 3418 } 3419 } 3420 3421 /** 3422 * Returns true if the key is used for keyboard navigation. 3423 * @param keyEvent The key event. 3424 * @return True if the key is used for keyboard navigation. 3425 */ 3426 private static boolean isNavigationKey(KeyEvent keyEvent) { 3427 switch (keyEvent.getKeyCode()) { 3428 case KeyEvent.KEYCODE_DPAD_LEFT: 3429 case KeyEvent.KEYCODE_DPAD_RIGHT: 3430 case KeyEvent.KEYCODE_DPAD_UP: 3431 case KeyEvent.KEYCODE_DPAD_DOWN: 3432 case KeyEvent.KEYCODE_DPAD_CENTER: 3433 case KeyEvent.KEYCODE_PAGE_UP: 3434 case KeyEvent.KEYCODE_PAGE_DOWN: 3435 case KeyEvent.KEYCODE_MOVE_HOME: 3436 case KeyEvent.KEYCODE_MOVE_END: 3437 case KeyEvent.KEYCODE_TAB: 3438 case KeyEvent.KEYCODE_SPACE: 3439 case KeyEvent.KEYCODE_ENTER: 3440 return true; 3441 } 3442 return false; 3443 } 3444 3445 /** 3446 * Returns true if the key is used for typing. 3447 * @param keyEvent The key event. 3448 * @return True if the key is used for typing. 3449 */ 3450 private static boolean isTypingKey(KeyEvent keyEvent) { 3451 return keyEvent.getUnicodeChar() > 0; 3452 } 3453 3454 /** 3455 * See if the key event means we should leave touch mode (and leave touch mode if so). 3456 * @param event The key event. 3457 * @return Whether this key event should be consumed (meaning the act of 3458 * leaving touch mode alone is considered the event). 3459 */ 3460 private boolean checkForLeavingTouchModeAndConsume(KeyEvent event) { 3461 // Only relevant in touch mode. 3462 if (!mAttachInfo.mInTouchMode) { 3463 return false; 3464 } 3465 3466 // Only consider leaving touch mode on DOWN or MULTIPLE actions, never on UP. 3467 final int action = event.getAction(); 3468 if (action != KeyEvent.ACTION_DOWN && action != KeyEvent.ACTION_MULTIPLE) { 3469 return false; 3470 } 3471 3472 // Don't leave touch mode if the IME told us not to. 3473 if ((event.getFlags() & KeyEvent.FLAG_KEEP_TOUCH_MODE) != 0) { 3474 return false; 3475 } 3476 3477 // If the key can be used for keyboard navigation then leave touch mode 3478 // and select a focused view if needed (in ensureTouchMode). 3479 // When a new focused view is selected, we consume the navigation key because 3480 // navigation doesn't make much sense unless a view already has focus so 3481 // the key's purpose is to set focus. 3482 if (isNavigationKey(event)) { 3483 return ensureTouchMode(false); 3484 } 3485 3486 // If the key can be used for typing then leave touch mode 3487 // and select a focused view if needed (in ensureTouchMode). 3488 // Always allow the view to process the typing key. 3489 if (isTypingKey(event)) { 3490 ensureTouchMode(false); 3491 return false; 3492 } 3493 3494 return false; 3495 } 3496 3497 private void deliverKeyEvent(QueuedInputEvent q) { 3498 final KeyEvent event = (KeyEvent)q.mEvent; 3499 if (mInputEventConsistencyVerifier != null) { 3500 mInputEventConsistencyVerifier.onKeyEvent(event, 0); 3501 } 3502 3503 if ((q.mFlags & QueuedInputEvent.FLAG_DELIVER_POST_IME) == 0) { 3504 // If there is no view, then the event will not be handled. 3505 if (mView == null || !mAdded) { 3506 finishInputEvent(q, false); 3507 return; 3508 } 3509 3510 if (LOCAL_LOGV) Log.v(TAG, "Dispatching key " + event + " to " + mView); 3511 3512 // Perform predispatching before the IME. 3513 if (mView.dispatchKeyEventPreIme(event)) { 3514 finishInputEvent(q, true); 3515 return; 3516 } 3517 3518 // Dispatch to the IME before propagating down the view hierarchy. 3519 // The IME will eventually call back into handleImeFinishedEvent. 3520 if (mLastWasImTarget) { 3521 InputMethodManager imm = InputMethodManager.peekInstance(); 3522 if (imm != null) { 3523 final int seq = event.getSequenceNumber(); 3524 if (DEBUG_IMF) Log.v(TAG, "Sending key event to IME: seq=" 3525 + seq + " event=" + event); 3526 imm.dispatchKeyEvent(mView.getContext(), seq, event, mInputMethodCallback); 3527 return; 3528 } 3529 } 3530 } 3531 3532 // Not dispatching to IME, continue with post IME actions. 3533 deliverKeyEventPostIme(q); 3534 } 3535 3536 void handleImeFinishedEvent(int seq, boolean handled) { 3537 final QueuedInputEvent q = mCurrentInputEvent; 3538 if (q != null && q.mEvent.getSequenceNumber() == seq) { 3539 final KeyEvent event = (KeyEvent)q.mEvent; 3540 if (DEBUG_IMF) { 3541 Log.v(TAG, "IME finished event: seq=" + seq 3542 + " handled=" + handled + " event=" + event); 3543 } 3544 if (handled) { 3545 finishInputEvent(q, true); 3546 } else { 3547 deliverKeyEventPostIme(q); 3548 } 3549 } else { 3550 if (DEBUG_IMF) { 3551 Log.v(TAG, "IME finished event: seq=" + seq 3552 + " handled=" + handled + ", event not found!"); 3553 } 3554 } 3555 } 3556 3557 private void deliverKeyEventPostIme(QueuedInputEvent q) { 3558 final KeyEvent event = (KeyEvent)q.mEvent; 3559 3560 // If the view went away, then the event will not be handled. 3561 if (mView == null || !mAdded) { 3562 finishInputEvent(q, false); 3563 return; 3564 } 3565 3566 // If the key's purpose is to exit touch mode then we consume it and consider it handled. 3567 if (checkForLeavingTouchModeAndConsume(event)) { 3568 finishInputEvent(q, true); 3569 return; 3570 } 3571 3572 // Make sure the fallback event policy sees all keys that will be delivered to the 3573 // view hierarchy. 3574 mFallbackEventHandler.preDispatchKeyEvent(event); 3575 3576 // Deliver the key to the view hierarchy. 3577 if (mView.dispatchKeyEvent(event)) { 3578 finishInputEvent(q, true); 3579 return; 3580 } 3581 3582 // If the Control modifier is held, try to interpret the key as a shortcut. 3583 if (event.getAction() == KeyEvent.ACTION_DOWN 3584 && event.isCtrlPressed() 3585 && event.getRepeatCount() == 0 3586 && !KeyEvent.isModifierKey(event.getKeyCode())) { 3587 if (mView.dispatchKeyShortcutEvent(event)) { 3588 finishInputEvent(q, true); 3589 return; 3590 } 3591 } 3592 3593 // Apply the fallback event policy. 3594 if (mFallbackEventHandler.dispatchKeyEvent(event)) { 3595 finishInputEvent(q, true); 3596 return; 3597 } 3598 3599 // Handle automatic focus changes. 3600 if (event.getAction() == KeyEvent.ACTION_DOWN) { 3601 int direction = 0; 3602 switch (event.getKeyCode()) { 3603 case KeyEvent.KEYCODE_DPAD_LEFT: 3604 if (event.hasNoModifiers()) { 3605 direction = View.FOCUS_LEFT; 3606 } 3607 break; 3608 case KeyEvent.KEYCODE_DPAD_RIGHT: 3609 if (event.hasNoModifiers()) { 3610 direction = View.FOCUS_RIGHT; 3611 } 3612 break; 3613 case KeyEvent.KEYCODE_DPAD_UP: 3614 if (event.hasNoModifiers()) { 3615 direction = View.FOCUS_UP; 3616 } 3617 break; 3618 case KeyEvent.KEYCODE_DPAD_DOWN: 3619 if (event.hasNoModifiers()) { 3620 direction = View.FOCUS_DOWN; 3621 } 3622 break; 3623 case KeyEvent.KEYCODE_TAB: 3624 if (event.hasNoModifiers()) { 3625 direction = View.FOCUS_FORWARD; 3626 } else if (event.hasModifiers(KeyEvent.META_SHIFT_ON)) { 3627 direction = View.FOCUS_BACKWARD; 3628 } 3629 break; 3630 } 3631 if (direction != 0) { 3632 View focused = mView.findFocus(); 3633 if (focused != null) { 3634 View v = focused.focusSearch(direction); 3635 if (v != null && v != focused) { 3636 // do the math the get the interesting rect 3637 // of previous focused into the coord system of 3638 // newly focused view 3639 focused.getFocusedRect(mTempRect); 3640 if (mView instanceof ViewGroup) { 3641 ((ViewGroup) mView).offsetDescendantRectToMyCoords( 3642 focused, mTempRect); 3643 ((ViewGroup) mView).offsetRectIntoDescendantCoords( 3644 v, mTempRect); 3645 } 3646 if (v.requestFocus(direction, mTempRect)) { 3647 playSoundEffect(SoundEffectConstants 3648 .getContantForFocusDirection(direction)); 3649 finishInputEvent(q, true); 3650 return; 3651 } 3652 } 3653 3654 // Give the focused view a last chance to handle the dpad key. 3655 if (mView.dispatchUnhandledMove(focused, direction)) { 3656 finishInputEvent(q, true); 3657 return; 3658 } 3659 } 3660 } 3661 } 3662 3663 // Key was unhandled. 3664 finishInputEvent(q, false); 3665 } 3666 3667 /* drag/drop */ 3668 void setLocalDragState(Object obj) { 3669 mLocalDragState = obj; 3670 } 3671 3672 private void handleDragEvent(DragEvent event) { 3673 // From the root, only drag start/end/location are dispatched. entered/exited 3674 // are determined and dispatched by the viewgroup hierarchy, who then report 3675 // that back here for ultimate reporting back to the framework. 3676 if (mView != null && mAdded) { 3677 final int what = event.mAction; 3678 3679 if (what == DragEvent.ACTION_DRAG_EXITED) { 3680 // A direct EXITED event means that the window manager knows we've just crossed 3681 // a window boundary, so the current drag target within this one must have 3682 // just been exited. Send it the usual notifications and then we're done 3683 // for now. 3684 mView.dispatchDragEvent(event); 3685 } else { 3686 // Cache the drag description when the operation starts, then fill it in 3687 // on subsequent calls as a convenience 3688 if (what == DragEvent.ACTION_DRAG_STARTED) { 3689 mCurrentDragView = null; // Start the current-recipient tracking 3690 mDragDescription = event.mClipDescription; 3691 } else { 3692 event.mClipDescription = mDragDescription; 3693 } 3694 3695 // For events with a [screen] location, translate into window coordinates 3696 if ((what == DragEvent.ACTION_DRAG_LOCATION) || (what == DragEvent.ACTION_DROP)) { 3697 mDragPoint.set(event.mX, event.mY); 3698 if (mTranslator != null) { 3699 mTranslator.translatePointInScreenToAppWindow(mDragPoint); 3700 } 3701 3702 if (mCurScrollY != 0) { 3703 mDragPoint.offset(0, mCurScrollY); 3704 } 3705 3706 event.mX = mDragPoint.x; 3707 event.mY = mDragPoint.y; 3708 } 3709 3710 // Remember who the current drag target is pre-dispatch 3711 final View prevDragView = mCurrentDragView; 3712 3713 // Now dispatch the drag/drop event 3714 boolean result = mView.dispatchDragEvent(event); 3715 3716 // If we changed apparent drag target, tell the OS about it 3717 if (prevDragView != mCurrentDragView) { 3718 try { 3719 if (prevDragView != null) { 3720 sWindowSession.dragRecipientExited(mWindow); 3721 } 3722 if (mCurrentDragView != null) { 3723 sWindowSession.dragRecipientEntered(mWindow); 3724 } 3725 } catch (RemoteException e) { 3726 Slog.e(TAG, "Unable to note drag target change"); 3727 } 3728 } 3729 3730 // Report the drop result when we're done 3731 if (what == DragEvent.ACTION_DROP) { 3732 mDragDescription = null; 3733 try { 3734 Log.i(TAG, "Reporting drop result: " + result); 3735 sWindowSession.reportDropResult(mWindow, result); 3736 } catch (RemoteException e) { 3737 Log.e(TAG, "Unable to report drop result"); 3738 } 3739 } 3740 3741 // When the drag operation ends, release any local state object 3742 // that may have been in use 3743 if (what == DragEvent.ACTION_DRAG_ENDED) { 3744 setLocalDragState(null); 3745 } 3746 } 3747 } 3748 event.recycle(); 3749 } 3750 3751 public void handleDispatchSystemUiVisibilityChanged(SystemUiVisibilityInfo args) { 3752 if (mSeq != args.seq) { 3753 // The sequence has changed, so we need to update our value and make 3754 // sure to do a traversal afterward so the window manager is given our 3755 // most recent data. 3756 mSeq = args.seq; 3757 mAttachInfo.mForceReportNewAttributes = true; 3758 scheduleTraversals(); 3759 } 3760 if (mView == null) return; 3761 if (args.localChanges != 0) { 3762 mView.updateLocalSystemUiVisibility(args.localValue, args.localChanges); 3763 } 3764 if (mAttachInfo != null) { 3765 int visibility = args.globalVisibility&View.SYSTEM_UI_CLEARABLE_FLAGS; 3766 if (visibility != mAttachInfo.mGlobalSystemUiVisibility) { 3767 mAttachInfo.mGlobalSystemUiVisibility = visibility; 3768 mView.dispatchSystemUiVisibilityChanged(visibility); 3769 } 3770 } 3771 } 3772 3773 public void handleDispatchDoneAnimating() { 3774 if (mWindowsAnimating) { 3775 mWindowsAnimating = false; 3776 if (!mDirty.isEmpty() || mIsAnimating) { 3777 scheduleTraversals(); 3778 } 3779 } 3780 } 3781 3782 public void getLastTouchPoint(Point outLocation) { 3783 outLocation.x = (int) mLastTouchPoint.x; 3784 outLocation.y = (int) mLastTouchPoint.y; 3785 } 3786 3787 public void setDragFocus(View newDragTarget) { 3788 if (mCurrentDragView != newDragTarget) { 3789 mCurrentDragView = newDragTarget; 3790 } 3791 } 3792 3793 private AudioManager getAudioManager() { 3794 if (mView == null) { 3795 throw new IllegalStateException("getAudioManager called when there is no mView"); 3796 } 3797 if (mAudioManager == null) { 3798 mAudioManager = (AudioManager) mView.getContext().getSystemService(Context.AUDIO_SERVICE); 3799 } 3800 return mAudioManager; 3801 } 3802 3803 public AccessibilityInteractionController getAccessibilityInteractionController() { 3804 if (mView == null) { 3805 throw new IllegalStateException("getAccessibilityInteractionController" 3806 + " called when there is no mView"); 3807 } 3808 if (mAccessibilityInteractionController == null) { 3809 mAccessibilityInteractionController = new AccessibilityInteractionController(this); 3810 } 3811 return mAccessibilityInteractionController; 3812 } 3813 3814 private int relayoutWindow(WindowManager.LayoutParams params, int viewVisibility, 3815 boolean insetsPending) throws RemoteException { 3816 3817 float appScale = mAttachInfo.mApplicationScale; 3818 boolean restore = false; 3819 if (params != null && mTranslator != null) { 3820 restore = true; 3821 params.backup(); 3822 mTranslator.translateWindowLayout(params); 3823 } 3824 if (params != null) { 3825 if (DBG) Log.d(TAG, "WindowLayout in layoutWindow:" + params); 3826 } 3827 mPendingConfiguration.seq = 0; 3828 //Log.d(TAG, ">>>>>> CALLING relayout"); 3829 if (params != null && mOrigWindowType != params.type) { 3830 // For compatibility with old apps, don't crash here. 3831 if (mTargetSdkVersion < android.os.Build.VERSION_CODES.ICE_CREAM_SANDWICH) { 3832 Slog.w(TAG, "Window type can not be changed after " 3833 + "the window is added; ignoring change of " + mView); 3834 params.type = mOrigWindowType; 3835 } 3836 } 3837 int relayoutResult = sWindowSession.relayout( 3838 mWindow, mSeq, params, 3839 (int) (mView.getMeasuredWidth() * appScale + 0.5f), 3840 (int) (mView.getMeasuredHeight() * appScale + 0.5f), 3841 viewVisibility, insetsPending ? WindowManagerImpl.RELAYOUT_INSETS_PENDING : 0, 3842 mWinFrame, mPendingContentInsets, mPendingVisibleInsets, 3843 mPendingConfiguration, mSurface); 3844 //Log.d(TAG, "<<<<<< BACK FROM relayout"); 3845 if (restore) { 3846 params.restore(); 3847 } 3848 3849 if (mTranslator != null) { 3850 mTranslator.translateRectInScreenToAppWinFrame(mWinFrame); 3851 mTranslator.translateRectInScreenToAppWindow(mPendingContentInsets); 3852 mTranslator.translateRectInScreenToAppWindow(mPendingVisibleInsets); 3853 } 3854 return relayoutResult; 3855 } 3856 3857 /** 3858 * {@inheritDoc} 3859 */ 3860 public void playSoundEffect(int effectId) { 3861 checkThread(); 3862 3863 try { 3864 final AudioManager audioManager = getAudioManager(); 3865 3866 switch (effectId) { 3867 case SoundEffectConstants.CLICK: 3868 audioManager.playSoundEffect(AudioManager.FX_KEY_CLICK); 3869 return; 3870 case SoundEffectConstants.NAVIGATION_DOWN: 3871 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_DOWN); 3872 return; 3873 case SoundEffectConstants.NAVIGATION_LEFT: 3874 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_LEFT); 3875 return; 3876 case SoundEffectConstants.NAVIGATION_RIGHT: 3877 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_RIGHT); 3878 return; 3879 case SoundEffectConstants.NAVIGATION_UP: 3880 audioManager.playSoundEffect(AudioManager.FX_FOCUS_NAVIGATION_UP); 3881 return; 3882 default: 3883 throw new IllegalArgumentException("unknown effect id " + effectId + 3884 " not defined in " + SoundEffectConstants.class.getCanonicalName()); 3885 } 3886 } catch (IllegalStateException e) { 3887 // Exception thrown by getAudioManager() when mView is null 3888 Log.e(TAG, "FATAL EXCEPTION when attempting to play sound effect: " + e); 3889 e.printStackTrace(); 3890 } 3891 } 3892 3893 /** 3894 * {@inheritDoc} 3895 */ 3896 public boolean performHapticFeedback(int effectId, boolean always) { 3897 try { 3898 return sWindowSession.performHapticFeedback(mWindow, effectId, always); 3899 } catch (RemoteException e) { 3900 return false; 3901 } 3902 } 3903 3904 /** 3905 * {@inheritDoc} 3906 */ 3907 public View focusSearch(View focused, int direction) { 3908 checkThread(); 3909 if (!(mView instanceof ViewGroup)) { 3910 return null; 3911 } 3912 return FocusFinder.getInstance().findNextFocus((ViewGroup) mView, focused, direction); 3913 } 3914 3915 public void debug() { 3916 mView.debug(); 3917 } 3918 3919 public void dumpGfxInfo(int[] info) { 3920 info[0] = info[1] = 0; 3921 if (mView != null) { 3922 getGfxInfo(mView, info); 3923 } 3924 } 3925 3926 private static void getGfxInfo(View view, int[] info) { 3927 DisplayList displayList = view.mDisplayList; 3928 info[0]++; 3929 if (displayList != null) { 3930 info[1] += displayList.getSize(); 3931 } 3932 3933 if (view instanceof ViewGroup) { 3934 ViewGroup group = (ViewGroup) view; 3935 3936 int count = group.getChildCount(); 3937 for (int i = 0; i < count; i++) { 3938 getGfxInfo(group.getChildAt(i), info); 3939 } 3940 } 3941 } 3942 3943 public void die(boolean immediate) { 3944 if (immediate) { 3945 doDie(); 3946 } else { 3947 if (!mIsDrawing) { 3948 destroyHardwareRenderer(); 3949 } else { 3950 Log.e(TAG, "Attempting to destroy the window while drawing!\n" + 3951 " window=" + this + ", title=" + mWindowAttributes.getTitle()); 3952 } 3953 mHandler.sendEmptyMessage(MSG_DIE); 3954 } 3955 } 3956 3957 void doDie() { 3958 checkThread(); 3959 if (LOCAL_LOGV) Log.v(TAG, "DIE in " + this + " of " + mSurface); 3960 synchronized (this) { 3961 if (mAdded) { 3962 dispatchDetachedFromWindow(); 3963 } 3964 3965 if (mAdded && !mFirst) { 3966 destroyHardwareRenderer(); 3967 3968 if (mView != null) { 3969 int viewVisibility = mView.getVisibility(); 3970 boolean viewVisibilityChanged = mViewVisibility != viewVisibility; 3971 if (mWindowAttributesChanged || viewVisibilityChanged) { 3972 // If layout params have been changed, first give them 3973 // to the window manager to make sure it has the correct 3974 // animation info. 3975 try { 3976 if ((relayoutWindow(mWindowAttributes, viewVisibility, false) 3977 & WindowManagerImpl.RELAYOUT_RES_FIRST_TIME) != 0) { 3978 sWindowSession.finishDrawing(mWindow); 3979 } 3980 } catch (RemoteException e) { 3981 } 3982 } 3983 3984 mSurface.release(); 3985 } 3986 } 3987 3988 mAdded = false; 3989 } 3990 } 3991 3992 public void requestUpdateConfiguration(Configuration config) { 3993 Message msg = mHandler.obtainMessage(MSG_UPDATE_CONFIGURATION, config); 3994 mHandler.sendMessage(msg); 3995 } 3996 3997 public void loadSystemProperties() { 3998 boolean layout = SystemProperties.getBoolean( 3999 View.DEBUG_LAYOUT_PROPERTY, false); 4000 if (layout != mAttachInfo.mDebugLayout) { 4001 mAttachInfo.mDebugLayout = layout; 4002 if (!mHandler.hasMessages(MSG_INVALIDATE_WORLD)) { 4003 mHandler.sendEmptyMessageDelayed(MSG_INVALIDATE_WORLD, 200); 4004 } 4005 } 4006 } 4007 4008 private void destroyHardwareRenderer() { 4009 AttachInfo attachInfo = mAttachInfo; 4010 HardwareRenderer hardwareRenderer = attachInfo.mHardwareRenderer; 4011 4012 if (hardwareRenderer != null) { 4013 if (mView != null) { 4014 hardwareRenderer.destroyHardwareResources(mView); 4015 } 4016 hardwareRenderer.destroy(true); 4017 hardwareRenderer.setRequested(false); 4018 4019 attachInfo.mHardwareRenderer = null; 4020 attachInfo.mHardwareAccelerated = false; 4021 } 4022 } 4023 4024 void dispatchImeFinishedEvent(int seq, boolean handled) { 4025 Message msg = mHandler.obtainMessage(MSG_IME_FINISHED_EVENT); 4026 msg.arg1 = seq; 4027 msg.arg2 = handled ? 1 : 0; 4028 msg.setAsynchronous(true); 4029 mHandler.sendMessage(msg); 4030 } 4031 4032 public void dispatchFinishInputConnection(InputConnection connection) { 4033 Message msg = mHandler.obtainMessage(MSG_FINISH_INPUT_CONNECTION, connection); 4034 mHandler.sendMessage(msg); 4035 } 4036 4037 public void dispatchResized(int w, int h, Rect contentInsets, 4038 Rect visibleInsets, boolean reportDraw, Configuration newConfig) { 4039 if (DEBUG_LAYOUT) Log.v(TAG, "Resizing " + this + ": w=" + w 4040 + " h=" + h + " contentInsets=" + contentInsets.toShortString() 4041 + " visibleInsets=" + visibleInsets.toShortString() 4042 + " reportDraw=" + reportDraw); 4043 Message msg = mHandler.obtainMessage(reportDraw ? MSG_RESIZED_REPORT :MSG_RESIZED); 4044 if (mTranslator != null) { 4045 mTranslator.translateRectInScreenToAppWindow(contentInsets); 4046 mTranslator.translateRectInScreenToAppWindow(visibleInsets); 4047 w *= mTranslator.applicationInvertedScale; 4048 h *= mTranslator.applicationInvertedScale; 4049 } 4050 msg.arg1 = w; 4051 msg.arg2 = h; 4052 ResizedInfo ri = new ResizedInfo(); 4053 ri.contentInsets = new Rect(contentInsets); 4054 ri.visibleInsets = new Rect(visibleInsets); 4055 ri.newConfig = newConfig; 4056 msg.obj = ri; 4057 mHandler.sendMessage(msg); 4058 } 4059 4060 /** 4061 * Represents a pending input event that is waiting in a queue. 4062 * 4063 * Input events are processed in serial order by the timestamp specified by 4064 * {@link InputEvent#getEventTimeNano()}. In general, the input dispatcher delivers 4065 * one input event to the application at a time and waits for the application 4066 * to finish handling it before delivering the next one. 4067 * 4068 * However, because the application or IME can synthesize and inject multiple 4069 * key events at a time without going through the input dispatcher, we end up 4070 * needing a queue on the application's side. 4071 */ 4072 private static final class QueuedInputEvent { 4073 public static final int FLAG_DELIVER_POST_IME = 1; 4074 4075 public QueuedInputEvent mNext; 4076 4077 public InputEvent mEvent; 4078 public InputEventReceiver mReceiver; 4079 public int mFlags; 4080 } 4081 4082 private QueuedInputEvent obtainQueuedInputEvent(InputEvent event, 4083 InputEventReceiver receiver, int flags) { 4084 QueuedInputEvent q = mQueuedInputEventPool; 4085 if (q != null) { 4086 mQueuedInputEventPoolSize -= 1; 4087 mQueuedInputEventPool = q.mNext; 4088 q.mNext = null; 4089 } else { 4090 q = new QueuedInputEvent(); 4091 } 4092 4093 q.mEvent = event; 4094 q.mReceiver = receiver; 4095 q.mFlags = flags; 4096 return q; 4097 } 4098 4099 private void recycleQueuedInputEvent(QueuedInputEvent q) { 4100 q.mEvent = null; 4101 q.mReceiver = null; 4102 4103 if (mQueuedInputEventPoolSize < MAX_QUEUED_INPUT_EVENT_POOL_SIZE) { 4104 mQueuedInputEventPoolSize += 1; 4105 q.mNext = mQueuedInputEventPool; 4106 mQueuedInputEventPool = q; 4107 } 4108 } 4109 4110 void enqueueInputEvent(InputEvent event) { 4111 enqueueInputEvent(event, null, 0, false); 4112 } 4113 4114 void enqueueInputEvent(InputEvent event, 4115 InputEventReceiver receiver, int flags, boolean processImmediately) { 4116 QueuedInputEvent q = obtainQueuedInputEvent(event, receiver, flags); 4117 4118 // Always enqueue the input event in order, regardless of its time stamp. 4119 // We do this because the application or the IME may inject key events 4120 // in response to touch events and we want to ensure that the injected keys 4121 // are processed in the order they were received and we cannot trust that 4122 // the time stamp of injected events are monotonic. 4123 QueuedInputEvent last = mFirstPendingInputEvent; 4124 if (last == null) { 4125 mFirstPendingInputEvent = q; 4126 } else { 4127 while (last.mNext != null) { 4128 last = last.mNext; 4129 } 4130 last.mNext = q; 4131 } 4132 4133 if (processImmediately) { 4134 doProcessInputEvents(); 4135 } else { 4136 scheduleProcessInputEvents(); 4137 } 4138 } 4139 4140 private void scheduleProcessInputEvents() { 4141 if (!mProcessInputEventsScheduled) { 4142 mProcessInputEventsScheduled = true; 4143 Message msg = mHandler.obtainMessage(MSG_PROCESS_INPUT_EVENTS); 4144 msg.setAsynchronous(true); 4145 mHandler.sendMessage(msg); 4146 } 4147 } 4148 4149 void doProcessInputEvents() { 4150 while (mCurrentInputEvent == null && mFirstPendingInputEvent != null) { 4151 QueuedInputEvent q = mFirstPendingInputEvent; 4152 mFirstPendingInputEvent = q.mNext; 4153 q.mNext = null; 4154 mCurrentInputEvent = q; 4155 deliverInputEvent(q); 4156 } 4157 4158 // We are done processing all input events that we can process right now 4159 // so we can clear the pending flag immediately. 4160 if (mProcessInputEventsScheduled) { 4161 mProcessInputEventsScheduled = false; 4162 mHandler.removeMessages(MSG_PROCESS_INPUT_EVENTS); 4163 } 4164 } 4165 4166 private void finishInputEvent(QueuedInputEvent q, boolean handled) { 4167 if (q != mCurrentInputEvent) { 4168 throw new IllegalStateException("finished input event out of order"); 4169 } 4170 4171 if (q.mReceiver != null) { 4172 q.mReceiver.finishInputEvent(q.mEvent, handled); 4173 } else { 4174 q.mEvent.recycleIfNeededAfterDispatch(); 4175 } 4176 4177 recycleQueuedInputEvent(q); 4178 4179 mCurrentInputEvent = null; 4180 if (mFirstPendingInputEvent != null) { 4181 scheduleProcessInputEvents(); 4182 } 4183 } 4184 4185 void scheduleConsumeBatchedInput() { 4186 if (!mConsumeBatchedInputScheduled) { 4187 mConsumeBatchedInputScheduled = true; 4188 mChoreographer.postCallback(Choreographer.CALLBACK_INPUT, 4189 mConsumedBatchedInputRunnable, null); 4190 } 4191 } 4192 4193 void unscheduleConsumeBatchedInput() { 4194 if (mConsumeBatchedInputScheduled) { 4195 mConsumeBatchedInputScheduled = false; 4196 mChoreographer.removeCallbacks(Choreographer.CALLBACK_INPUT, 4197 mConsumedBatchedInputRunnable, null); 4198 } 4199 } 4200 4201 void doConsumeBatchedInput(long frameTimeNanos) { 4202 if (mConsumeBatchedInputScheduled) { 4203 mConsumeBatchedInputScheduled = false; 4204 if (mInputEventReceiver != null) { 4205 mInputEventReceiver.consumeBatchedInputEvents(frameTimeNanos); 4206 } 4207 doProcessInputEvents(); 4208 } 4209 } 4210 4211 final class TraversalRunnable implements Runnable { 4212 @Override 4213 public void run() { 4214 doTraversal(); 4215 } 4216 } 4217 final TraversalRunnable mTraversalRunnable = new TraversalRunnable(); 4218 4219 final class WindowInputEventReceiver extends InputEventReceiver { 4220 public WindowInputEventReceiver(InputChannel inputChannel, Looper looper) { 4221 super(inputChannel, looper); 4222 } 4223 4224 @Override 4225 public void onInputEvent(InputEvent event) { 4226 enqueueInputEvent(event, this, 0, true); 4227 } 4228 4229 @Override 4230 public void onBatchedInputEventPending() { 4231 scheduleConsumeBatchedInput(); 4232 } 4233 4234 @Override 4235 public void dispose() { 4236 unscheduleConsumeBatchedInput(); 4237 super.dispose(); 4238 } 4239 } 4240 WindowInputEventReceiver mInputEventReceiver; 4241 4242 final class ConsumeBatchedInputRunnable implements Runnable { 4243 @Override 4244 public void run() { 4245 doConsumeBatchedInput(mChoreographer.getFrameTimeNanos()); 4246 } 4247 } 4248 final ConsumeBatchedInputRunnable mConsumedBatchedInputRunnable = 4249 new ConsumeBatchedInputRunnable(); 4250 boolean mConsumeBatchedInputScheduled; 4251 4252 final class InvalidateOnAnimationRunnable implements Runnable { 4253 private boolean mPosted; 4254 private ArrayList<View> mViews = new ArrayList<View>(); 4255 private ArrayList<AttachInfo.InvalidateInfo> mViewRects = 4256 new ArrayList<AttachInfo.InvalidateInfo>(); 4257 private View[] mTempViews; 4258 private AttachInfo.InvalidateInfo[] mTempViewRects; 4259 4260 public void addView(View view) { 4261 synchronized (this) { 4262 mViews.add(view); 4263 postIfNeededLocked(); 4264 } 4265 } 4266 4267 public void addViewRect(AttachInfo.InvalidateInfo info) { 4268 synchronized (this) { 4269 mViewRects.add(info); 4270 postIfNeededLocked(); 4271 } 4272 } 4273 4274 public void removeView(View view) { 4275 synchronized (this) { 4276 mViews.remove(view); 4277 4278 for (int i = mViewRects.size(); i-- > 0; ) { 4279 AttachInfo.InvalidateInfo info = mViewRects.get(i); 4280 if (info.target == view) { 4281 mViewRects.remove(i); 4282 info.release(); 4283 } 4284 } 4285 4286 if (mPosted && mViews.isEmpty() && mViewRects.isEmpty()) { 4287 mChoreographer.removeCallbacks(Choreographer.CALLBACK_ANIMATION, this, null); 4288 mPosted = false; 4289 } 4290 } 4291 } 4292 4293 @Override 4294 public void run() { 4295 final int viewCount; 4296 final int viewRectCount; 4297 synchronized (this) { 4298 mPosted = false; 4299 4300 viewCount = mViews.size(); 4301 if (viewCount != 0) { 4302 mTempViews = mViews.toArray(mTempViews != null 4303 ? mTempViews : new View[viewCount]); 4304 mViews.clear(); 4305 } 4306 4307 viewRectCount = mViewRects.size(); 4308 if (viewRectCount != 0) { 4309 mTempViewRects = mViewRects.toArray(mTempViewRects != null 4310 ? mTempViewRects : new AttachInfo.InvalidateInfo[viewRectCount]); 4311 mViewRects.clear(); 4312 } 4313 } 4314 4315 for (int i = 0; i < viewCount; i++) { 4316 mTempViews[i].invalidate(); 4317 mTempViews[i] = null; 4318 } 4319 4320 for (int i = 0; i < viewRectCount; i++) { 4321 final View.AttachInfo.InvalidateInfo info = mTempViewRects[i]; 4322 info.target.invalidate(info.left, info.top, info.right, info.bottom); 4323 info.release(); 4324 } 4325 } 4326 4327 private void postIfNeededLocked() { 4328 if (!mPosted) { 4329 mChoreographer.postCallback(Choreographer.CALLBACK_ANIMATION, this, null); 4330 mPosted = true; 4331 } 4332 } 4333 } 4334 final InvalidateOnAnimationRunnable mInvalidateOnAnimationRunnable = 4335 new InvalidateOnAnimationRunnable(); 4336 4337 public void dispatchInvalidateDelayed(View view, long delayMilliseconds) { 4338 Message msg = mHandler.obtainMessage(MSG_INVALIDATE, view); 4339 mHandler.sendMessageDelayed(msg, delayMilliseconds); 4340 } 4341 4342 public void dispatchInvalidateRectDelayed(AttachInfo.InvalidateInfo info, 4343 long delayMilliseconds) { 4344 final Message msg = mHandler.obtainMessage(MSG_INVALIDATE_RECT, info); 4345 mHandler.sendMessageDelayed(msg, delayMilliseconds); 4346 } 4347 4348 public void dispatchInvalidateOnAnimation(View view) { 4349 mInvalidateOnAnimationRunnable.addView(view); 4350 } 4351 4352 public void dispatchInvalidateRectOnAnimation(AttachInfo.InvalidateInfo info) { 4353 mInvalidateOnAnimationRunnable.addViewRect(info); 4354 } 4355 4356 public void enqueueDisplayList(DisplayList displayList) { 4357 mDisplayLists.add(displayList); 4358 4359 mHandler.removeMessages(MSG_INVALIDATE_DISPLAY_LIST); 4360 Message msg = mHandler.obtainMessage(MSG_INVALIDATE_DISPLAY_LIST); 4361 mHandler.sendMessage(msg); 4362 } 4363 4364 public void dequeueDisplayList(DisplayList displayList) { 4365 if (mDisplayLists.remove(displayList)) { 4366 displayList.invalidate(); 4367 if (mDisplayLists.size() == 0) { 4368 mHandler.removeMessages(MSG_INVALIDATE_DISPLAY_LIST); 4369 } 4370 } 4371 } 4372 4373 public void cancelInvalidate(View view) { 4374 mHandler.removeMessages(MSG_INVALIDATE, view); 4375 // fixme: might leak the AttachInfo.InvalidateInfo objects instead of returning 4376 // them to the pool 4377 mHandler.removeMessages(MSG_INVALIDATE_RECT, view); 4378 mInvalidateOnAnimationRunnable.removeView(view); 4379 } 4380 4381 public void dispatchKey(KeyEvent event) { 4382 Message msg = mHandler.obtainMessage(MSG_DISPATCH_KEY, event); 4383 msg.setAsynchronous(true); 4384 mHandler.sendMessage(msg); 4385 } 4386 4387 public void dispatchKeyFromIme(KeyEvent event) { 4388 Message msg = mHandler.obtainMessage(MSG_DISPATCH_KEY_FROM_IME, event); 4389 msg.setAsynchronous(true); 4390 mHandler.sendMessage(msg); 4391 } 4392 4393 public void dispatchUnhandledKey(KeyEvent event) { 4394 if ((event.getFlags() & KeyEvent.FLAG_FALLBACK) == 0) { 4395 final KeyCharacterMap kcm = event.getKeyCharacterMap(); 4396 final int keyCode = event.getKeyCode(); 4397 final int metaState = event.getMetaState(); 4398 4399 // Check for fallback actions specified by the key character map. 4400 KeyCharacterMap.FallbackAction fallbackAction = 4401 kcm.getFallbackAction(keyCode, metaState); 4402 if (fallbackAction != null) { 4403 final int flags = event.getFlags() | KeyEvent.FLAG_FALLBACK; 4404 KeyEvent fallbackEvent = KeyEvent.obtain( 4405 event.getDownTime(), event.getEventTime(), 4406 event.getAction(), fallbackAction.keyCode, 4407 event.getRepeatCount(), fallbackAction.metaState, 4408 event.getDeviceId(), event.getScanCode(), 4409 flags, event.getSource(), null); 4410 fallbackAction.recycle(); 4411 4412 dispatchKey(fallbackEvent); 4413 } 4414 } 4415 } 4416 4417 public void dispatchAppVisibility(boolean visible) { 4418 Message msg = mHandler.obtainMessage(MSG_DISPATCH_APP_VISIBILITY); 4419 msg.arg1 = visible ? 1 : 0; 4420 mHandler.sendMessage(msg); 4421 } 4422 4423 public void dispatchScreenStateChange(boolean on) { 4424 Message msg = mHandler.obtainMessage(MSG_DISPATCH_SCREEN_STATE); 4425 msg.arg1 = on ? 1 : 0; 4426 mHandler.sendMessage(msg); 4427 } 4428 4429 public void dispatchGetNewSurface() { 4430 Message msg = mHandler.obtainMessage(MSG_DISPATCH_GET_NEW_SURFACE); 4431 mHandler.sendMessage(msg); 4432 } 4433 4434 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 4435 Message msg = Message.obtain(); 4436 msg.what = MSG_WINDOW_FOCUS_CHANGED; 4437 msg.arg1 = hasFocus ? 1 : 0; 4438 msg.arg2 = inTouchMode ? 1 : 0; 4439 mHandler.sendMessage(msg); 4440 } 4441 4442 public void dispatchCloseSystemDialogs(String reason) { 4443 Message msg = Message.obtain(); 4444 msg.what = MSG_CLOSE_SYSTEM_DIALOGS; 4445 msg.obj = reason; 4446 mHandler.sendMessage(msg); 4447 } 4448 4449 public void dispatchDragEvent(DragEvent event) { 4450 final int what; 4451 if (event.getAction() == DragEvent.ACTION_DRAG_LOCATION) { 4452 what = MSG_DISPATCH_DRAG_LOCATION_EVENT; 4453 mHandler.removeMessages(what); 4454 } else { 4455 what = MSG_DISPATCH_DRAG_EVENT; 4456 } 4457 Message msg = mHandler.obtainMessage(what, event); 4458 mHandler.sendMessage(msg); 4459 } 4460 4461 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 4462 int localValue, int localChanges) { 4463 SystemUiVisibilityInfo args = new SystemUiVisibilityInfo(); 4464 args.seq = seq; 4465 args.globalVisibility = globalVisibility; 4466 args.localValue = localValue; 4467 args.localChanges = localChanges; 4468 mHandler.sendMessage(mHandler.obtainMessage(MSG_DISPATCH_SYSTEM_UI_VISIBILITY, args)); 4469 } 4470 4471 public void dispatchDoneAnimating() { 4472 mHandler.sendEmptyMessage(MSG_DISPATCH_DONE_ANIMATING); 4473 } 4474 4475 public void dispatchCheckFocus() { 4476 if (!mHandler.hasMessages(MSG_CHECK_FOCUS)) { 4477 // This will result in a call to checkFocus() below. 4478 mHandler.sendEmptyMessage(MSG_CHECK_FOCUS); 4479 } 4480 } 4481 4482 /** 4483 * Post a callback to send a 4484 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 4485 * This event is send at most once every 4486 * {@link ViewConfiguration#getSendRecurringAccessibilityEventsInterval()}. 4487 */ 4488 private void postSendWindowContentChangedCallback(View source) { 4489 if (mSendWindowContentChangedAccessibilityEvent == null) { 4490 mSendWindowContentChangedAccessibilityEvent = 4491 new SendWindowContentChangedAccessibilityEvent(); 4492 } 4493 View oldSource = mSendWindowContentChangedAccessibilityEvent.mSource; 4494 if (oldSource == null) { 4495 mSendWindowContentChangedAccessibilityEvent.mSource = source; 4496 mHandler.postDelayed(mSendWindowContentChangedAccessibilityEvent, 4497 ViewConfiguration.getSendRecurringAccessibilityEventsInterval()); 4498 } else { 4499 mSendWindowContentChangedAccessibilityEvent.mSource = 4500 getCommonPredecessor(oldSource, source); 4501 } 4502 } 4503 4504 /** 4505 * Remove a posted callback to send a 4506 * {@link AccessibilityEvent#TYPE_WINDOW_CONTENT_CHANGED} event. 4507 */ 4508 private void removeSendWindowContentChangedCallback() { 4509 if (mSendWindowContentChangedAccessibilityEvent != null) { 4510 mHandler.removeCallbacks(mSendWindowContentChangedAccessibilityEvent); 4511 } 4512 } 4513 4514 public boolean showContextMenuForChild(View originalView) { 4515 return false; 4516 } 4517 4518 public ActionMode startActionModeForChild(View originalView, ActionMode.Callback callback) { 4519 return null; 4520 } 4521 4522 public void createContextMenu(ContextMenu menu) { 4523 } 4524 4525 public void childDrawableStateChanged(View child) { 4526 } 4527 4528 public boolean requestSendAccessibilityEvent(View child, AccessibilityEvent event) { 4529 if (mView == null) { 4530 return false; 4531 } 4532 // Intercept accessibility focus events fired by virtual nodes to keep 4533 // track of accessibility focus position in such nodes. 4534 final int eventType = event.getEventType(); 4535 switch (eventType) { 4536 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUSED: { 4537 final long sourceNodeId = event.getSourceNodeId(); 4538 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 4539 sourceNodeId); 4540 View source = mView.findViewByAccessibilityId(accessibilityViewId); 4541 if (source != null) { 4542 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 4543 if (provider != null) { 4544 AccessibilityNodeInfo node = provider.createAccessibilityNodeInfo( 4545 AccessibilityNodeInfo.getVirtualDescendantId(sourceNodeId)); 4546 setAccessibilityFocus(source, node); 4547 } 4548 } 4549 } break; 4550 case AccessibilityEvent.TYPE_VIEW_ACCESSIBILITY_FOCUS_CLEARED: { 4551 final long sourceNodeId = event.getSourceNodeId(); 4552 final int accessibilityViewId = AccessibilityNodeInfo.getAccessibilityViewId( 4553 sourceNodeId); 4554 View source = mView.findViewByAccessibilityId(accessibilityViewId); 4555 if (source != null) { 4556 AccessibilityNodeProvider provider = source.getAccessibilityNodeProvider(); 4557 if (provider != null) { 4558 setAccessibilityFocus(null, null); 4559 } 4560 } 4561 } break; 4562 } 4563 mAccessibilityManager.sendAccessibilityEvent(event); 4564 return true; 4565 } 4566 4567 @Override 4568 public void childAccessibilityStateChanged(View child) { 4569 postSendWindowContentChangedCallback(child); 4570 } 4571 4572 private View getCommonPredecessor(View first, View second) { 4573 if (mAttachInfo != null) { 4574 if (mTempHashSet == null) { 4575 mTempHashSet = new HashSet<View>(); 4576 } 4577 HashSet<View> seen = mTempHashSet; 4578 seen.clear(); 4579 View firstCurrent = first; 4580 while (firstCurrent != null) { 4581 seen.add(firstCurrent); 4582 ViewParent firstCurrentParent = firstCurrent.mParent; 4583 if (firstCurrentParent instanceof View) { 4584 firstCurrent = (View) firstCurrentParent; 4585 } else { 4586 firstCurrent = null; 4587 } 4588 } 4589 View secondCurrent = second; 4590 while (secondCurrent != null) { 4591 if (seen.contains(secondCurrent)) { 4592 seen.clear(); 4593 return secondCurrent; 4594 } 4595 ViewParent secondCurrentParent = secondCurrent.mParent; 4596 if (secondCurrentParent instanceof View) { 4597 secondCurrent = (View) secondCurrentParent; 4598 } else { 4599 secondCurrent = null; 4600 } 4601 } 4602 seen.clear(); 4603 } 4604 return null; 4605 } 4606 4607 void checkThread() { 4608 if (mThread != Thread.currentThread()) { 4609 throw new CalledFromWrongThreadException( 4610 "Only the original thread that created a view hierarchy can touch its views."); 4611 } 4612 } 4613 4614 public void requestDisallowInterceptTouchEvent(boolean disallowIntercept) { 4615 // ViewAncestor never intercepts touch event, so this can be a no-op 4616 } 4617 4618 public boolean requestChildRectangleOnScreen(View child, Rect rectangle, 4619 boolean immediate) { 4620 return scrollToRectOrFocus(rectangle, immediate); 4621 } 4622 4623 public void childHasTransientStateChanged(View child, boolean hasTransientState) { 4624 // Do nothing. 4625 } 4626 4627 class TakenSurfaceHolder extends BaseSurfaceHolder { 4628 @Override 4629 public boolean onAllowLockCanvas() { 4630 return mDrawingAllowed; 4631 } 4632 4633 @Override 4634 public void onRelayoutContainer() { 4635 // Not currently interesting -- from changing between fixed and layout size. 4636 } 4637 4638 public void setFormat(int format) { 4639 ((RootViewSurfaceTaker)mView).setSurfaceFormat(format); 4640 } 4641 4642 public void setType(int type) { 4643 ((RootViewSurfaceTaker)mView).setSurfaceType(type); 4644 } 4645 4646 @Override 4647 public void onUpdateSurface() { 4648 // We take care of format and type changes on our own. 4649 throw new IllegalStateException("Shouldn't be here"); 4650 } 4651 4652 public boolean isCreating() { 4653 return mIsCreating; 4654 } 4655 4656 @Override 4657 public void setFixedSize(int width, int height) { 4658 throw new UnsupportedOperationException( 4659 "Currently only support sizing from layout"); 4660 } 4661 4662 public void setKeepScreenOn(boolean screenOn) { 4663 ((RootViewSurfaceTaker)mView).setSurfaceKeepScreenOn(screenOn); 4664 } 4665 } 4666 4667 static class InputMethodCallback extends IInputMethodCallback.Stub { 4668 private WeakReference<ViewRootImpl> mViewAncestor; 4669 4670 public InputMethodCallback(ViewRootImpl viewAncestor) { 4671 mViewAncestor = new WeakReference<ViewRootImpl>(viewAncestor); 4672 } 4673 4674 public void finishedEvent(int seq, boolean handled) { 4675 final ViewRootImpl viewAncestor = mViewAncestor.get(); 4676 if (viewAncestor != null) { 4677 viewAncestor.dispatchImeFinishedEvent(seq, handled); 4678 } 4679 } 4680 4681 public void sessionCreated(IInputMethodSession session) { 4682 // Stub -- not for use in the client. 4683 } 4684 } 4685 4686 static class W extends IWindow.Stub { 4687 private final WeakReference<ViewRootImpl> mViewAncestor; 4688 4689 W(ViewRootImpl viewAncestor) { 4690 mViewAncestor = new WeakReference<ViewRootImpl>(viewAncestor); 4691 } 4692 4693 public void resized(int w, int h, Rect contentInsets, 4694 Rect visibleInsets, boolean reportDraw, Configuration newConfig) { 4695 final ViewRootImpl viewAncestor = mViewAncestor.get(); 4696 if (viewAncestor != null) { 4697 viewAncestor.dispatchResized(w, h, contentInsets, 4698 visibleInsets, reportDraw, newConfig); 4699 } 4700 } 4701 4702 public void dispatchAppVisibility(boolean visible) { 4703 final ViewRootImpl viewAncestor = mViewAncestor.get(); 4704 if (viewAncestor != null) { 4705 viewAncestor.dispatchAppVisibility(visible); 4706 } 4707 } 4708 4709 public void dispatchScreenState(boolean on) { 4710 final ViewRootImpl viewAncestor = mViewAncestor.get(); 4711 if (viewAncestor != null) { 4712 viewAncestor.dispatchScreenStateChange(on); 4713 } 4714 } 4715 4716 public void dispatchGetNewSurface() { 4717 final ViewRootImpl viewAncestor = mViewAncestor.get(); 4718 if (viewAncestor != null) { 4719 viewAncestor.dispatchGetNewSurface(); 4720 } 4721 } 4722 4723 public void windowFocusChanged(boolean hasFocus, boolean inTouchMode) { 4724 final ViewRootImpl viewAncestor = mViewAncestor.get(); 4725 if (viewAncestor != null) { 4726 viewAncestor.windowFocusChanged(hasFocus, inTouchMode); 4727 } 4728 } 4729 4730 private static int checkCallingPermission(String permission) { 4731 try { 4732 return ActivityManagerNative.getDefault().checkPermission( 4733 permission, Binder.getCallingPid(), Binder.getCallingUid()); 4734 } catch (RemoteException e) { 4735 return PackageManager.PERMISSION_DENIED; 4736 } 4737 } 4738 4739 public void executeCommand(String command, String parameters, ParcelFileDescriptor out) { 4740 final ViewRootImpl viewAncestor = mViewAncestor.get(); 4741 if (viewAncestor != null) { 4742 final View view = viewAncestor.mView; 4743 if (view != null) { 4744 if (checkCallingPermission(Manifest.permission.DUMP) != 4745 PackageManager.PERMISSION_GRANTED) { 4746 throw new SecurityException("Insufficient permissions to invoke" 4747 + " executeCommand() from pid=" + Binder.getCallingPid() 4748 + ", uid=" + Binder.getCallingUid()); 4749 } 4750 4751 OutputStream clientStream = null; 4752 try { 4753 clientStream = new ParcelFileDescriptor.AutoCloseOutputStream(out); 4754 ViewDebug.dispatchCommand(view, command, parameters, clientStream); 4755 } catch (IOException e) { 4756 e.printStackTrace(); 4757 } finally { 4758 if (clientStream != null) { 4759 try { 4760 clientStream.close(); 4761 } catch (IOException e) { 4762 e.printStackTrace(); 4763 } 4764 } 4765 } 4766 } 4767 } 4768 } 4769 4770 public void closeSystemDialogs(String reason) { 4771 final ViewRootImpl viewAncestor = mViewAncestor.get(); 4772 if (viewAncestor != null) { 4773 viewAncestor.dispatchCloseSystemDialogs(reason); 4774 } 4775 } 4776 4777 public void dispatchWallpaperOffsets(float x, float y, float xStep, float yStep, 4778 boolean sync) { 4779 if (sync) { 4780 try { 4781 sWindowSession.wallpaperOffsetsComplete(asBinder()); 4782 } catch (RemoteException e) { 4783 } 4784 } 4785 } 4786 4787 public void dispatchWallpaperCommand(String action, int x, int y, 4788 int z, Bundle extras, boolean sync) { 4789 if (sync) { 4790 try { 4791 sWindowSession.wallpaperCommandComplete(asBinder(), null); 4792 } catch (RemoteException e) { 4793 } 4794 } 4795 } 4796 4797 /* Drag/drop */ 4798 public void dispatchDragEvent(DragEvent event) { 4799 final ViewRootImpl viewAncestor = mViewAncestor.get(); 4800 if (viewAncestor != null) { 4801 viewAncestor.dispatchDragEvent(event); 4802 } 4803 } 4804 4805 public void dispatchSystemUiVisibilityChanged(int seq, int globalVisibility, 4806 int localValue, int localChanges) { 4807 final ViewRootImpl viewAncestor = mViewAncestor.get(); 4808 if (viewAncestor != null) { 4809 viewAncestor.dispatchSystemUiVisibilityChanged(seq, globalVisibility, 4810 localValue, localChanges); 4811 } 4812 } 4813 4814 public void doneAnimating() { 4815 final ViewRootImpl viewAncestor = mViewAncestor.get(); 4816 if (viewAncestor != null) { 4817 viewAncestor.dispatchDoneAnimating(); 4818 } 4819 } 4820 } 4821 4822 /** 4823 * Maintains state information for a single trackball axis, generating 4824 * discrete (DPAD) movements based on raw trackball motion. 4825 */ 4826 static final class TrackballAxis { 4827 /** 4828 * The maximum amount of acceleration we will apply. 4829 */ 4830 static final float MAX_ACCELERATION = 20; 4831 4832 /** 4833 * The maximum amount of time (in milliseconds) between events in order 4834 * for us to consider the user to be doing fast trackball movements, 4835 * and thus apply an acceleration. 4836 */ 4837 static final long FAST_MOVE_TIME = 150; 4838 4839 /** 4840 * Scaling factor to the time (in milliseconds) between events to how 4841 * much to multiple/divide the current acceleration. When movement 4842 * is < FAST_MOVE_TIME this multiplies the acceleration; when > 4843 * FAST_MOVE_TIME it divides it. 4844 */ 4845 static final float ACCEL_MOVE_SCALING_FACTOR = (1.0f/40); 4846 4847 float position; 4848 float absPosition; 4849 float acceleration = 1; 4850 long lastMoveTime = 0; 4851 int step; 4852 int dir; 4853 int nonAccelMovement; 4854 4855 void reset(int _step) { 4856 position = 0; 4857 acceleration = 1; 4858 lastMoveTime = 0; 4859 step = _step; 4860 dir = 0; 4861 } 4862 4863 /** 4864 * Add trackball movement into the state. If the direction of movement 4865 * has been reversed, the state is reset before adding the 4866 * movement (so that you don't have to compensate for any previously 4867 * collected movement before see the result of the movement in the 4868 * new direction). 4869 * 4870 * @return Returns the absolute value of the amount of movement 4871 * collected so far. 4872 */ 4873 float collect(float off, long time, String axis) { 4874 long normTime; 4875 if (off > 0) { 4876 normTime = (long)(off * FAST_MOVE_TIME); 4877 if (dir < 0) { 4878 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to positive!"); 4879 position = 0; 4880 step = 0; 4881 acceleration = 1; 4882 lastMoveTime = 0; 4883 } 4884 dir = 1; 4885 } else if (off < 0) { 4886 normTime = (long)((-off) * FAST_MOVE_TIME); 4887 if (dir > 0) { 4888 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " reversed to negative!"); 4889 position = 0; 4890 step = 0; 4891 acceleration = 1; 4892 lastMoveTime = 0; 4893 } 4894 dir = -1; 4895 } else { 4896 normTime = 0; 4897 } 4898 4899 // The number of milliseconds between each movement that is 4900 // considered "normal" and will not result in any acceleration 4901 // or deceleration, scaled by the offset we have here. 4902 if (normTime > 0) { 4903 long delta = time - lastMoveTime; 4904 lastMoveTime = time; 4905 float acc = acceleration; 4906 if (delta < normTime) { 4907 // The user is scrolling rapidly, so increase acceleration. 4908 float scale = (normTime-delta) * ACCEL_MOVE_SCALING_FACTOR; 4909 if (scale > 1) acc *= scale; 4910 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " accelerate: off=" 4911 + off + " normTime=" + normTime + " delta=" + delta 4912 + " scale=" + scale + " acc=" + acc); 4913 acceleration = acc < MAX_ACCELERATION ? acc : MAX_ACCELERATION; 4914 } else { 4915 // The user is scrolling slowly, so decrease acceleration. 4916 float scale = (delta-normTime) * ACCEL_MOVE_SCALING_FACTOR; 4917 if (scale > 1) acc /= scale; 4918 if (DEBUG_TRACKBALL) Log.v(TAG, axis + " deccelerate: off=" 4919 + off + " normTime=" + normTime + " delta=" + delta 4920 + " scale=" + scale + " acc=" + acc); 4921 acceleration = acc > 1 ? acc : 1; 4922 } 4923 } 4924 position += off; 4925 return (absPosition = Math.abs(position)); 4926 } 4927 4928 /** 4929 * Generate the number of discrete movement events appropriate for 4930 * the currently collected trackball movement. 4931 * 4932 * @param precision The minimum movement required to generate the 4933 * first discrete movement. 4934 * 4935 * @return Returns the number of discrete movements, either positive 4936 * or negative, or 0 if there is not enough trackball movement yet 4937 * for a discrete movement. 4938 */ 4939 int generate(float precision) { 4940 int movement = 0; 4941 nonAccelMovement = 0; 4942 do { 4943 final int dir = position >= 0 ? 1 : -1; 4944 switch (step) { 4945 // If we are going to execute the first step, then we want 4946 // to do this as soon as possible instead of waiting for 4947 // a full movement, in order to make things look responsive. 4948 case 0: 4949 if (absPosition < precision) { 4950 return movement; 4951 } 4952 movement += dir; 4953 nonAccelMovement += dir; 4954 step = 1; 4955 break; 4956 // If we have generated the first movement, then we need 4957 // to wait for the second complete trackball motion before 4958 // generating the second discrete movement. 4959 case 1: 4960 if (absPosition < 2) { 4961 return movement; 4962 } 4963 movement += dir; 4964 nonAccelMovement += dir; 4965 position += dir > 0 ? -2 : 2; 4966 absPosition = Math.abs(position); 4967 step = 2; 4968 break; 4969 // After the first two, we generate discrete movements 4970 // consistently with the trackball, applying an acceleration 4971 // if the trackball is moving quickly. This is a simple 4972 // acceleration on top of what we already compute based 4973 // on how quickly the wheel is being turned, to apply 4974 // a longer increasing acceleration to continuous movement 4975 // in one direction. 4976 default: 4977 if (absPosition < 1) { 4978 return movement; 4979 } 4980 movement += dir; 4981 position += dir >= 0 ? -1 : 1; 4982 absPosition = Math.abs(position); 4983 float acc = acceleration; 4984 acc *= 1.1f; 4985 acceleration = acc < MAX_ACCELERATION ? acc : acceleration; 4986 break; 4987 } 4988 } while (true); 4989 } 4990 } 4991 4992 public static final class CalledFromWrongThreadException extends AndroidRuntimeException { 4993 public CalledFromWrongThreadException(String msg) { 4994 super(msg); 4995 } 4996 } 4997 4998 private SurfaceHolder mHolder = new SurfaceHolder() { 4999 // we only need a SurfaceHolder for opengl. it would be nice 5000 // to implement everything else though, especially the callback 5001 // support (opengl doesn't make use of it right now, but eventually 5002 // will). 5003 public Surface getSurface() { 5004 return mSurface; 5005 } 5006 5007 public boolean isCreating() { 5008 return false; 5009 } 5010 5011 public void addCallback(Callback callback) { 5012 } 5013 5014 public void removeCallback(Callback callback) { 5015 } 5016 5017 public void setFixedSize(int width, int height) { 5018 } 5019 5020 public void setSizeFromLayout() { 5021 } 5022 5023 public void setFormat(int format) { 5024 } 5025 5026 public void setType(int type) { 5027 } 5028 5029 public void setKeepScreenOn(boolean screenOn) { 5030 } 5031 5032 public Canvas lockCanvas() { 5033 return null; 5034 } 5035 5036 public Canvas lockCanvas(Rect dirty) { 5037 return null; 5038 } 5039 5040 public void unlockCanvasAndPost(Canvas canvas) { 5041 } 5042 public Rect getSurfaceFrame() { 5043 return null; 5044 } 5045 }; 5046 5047 static RunQueue getRunQueue() { 5048 RunQueue rq = sRunQueues.get(); 5049 if (rq != null) { 5050 return rq; 5051 } 5052 rq = new RunQueue(); 5053 sRunQueues.set(rq); 5054 return rq; 5055 } 5056 5057 /** 5058 * The run queue is used to enqueue pending work from Views when no Handler is 5059 * attached. The work is executed during the next call to performTraversals on 5060 * the thread. 5061 * @hide 5062 */ 5063 static final class RunQueue { 5064 private final ArrayList<HandlerAction> mActions = new ArrayList<HandlerAction>(); 5065 5066 void post(Runnable action) { 5067 postDelayed(action, 0); 5068 } 5069 5070 void postDelayed(Runnable action, long delayMillis) { 5071 HandlerAction handlerAction = new HandlerAction(); 5072 handlerAction.action = action; 5073 handlerAction.delay = delayMillis; 5074 5075 synchronized (mActions) { 5076 mActions.add(handlerAction); 5077 } 5078 } 5079 5080 void removeCallbacks(Runnable action) { 5081 final HandlerAction handlerAction = new HandlerAction(); 5082 handlerAction.action = action; 5083 5084 synchronized (mActions) { 5085 final ArrayList<HandlerAction> actions = mActions; 5086 5087 while (actions.remove(handlerAction)) { 5088 // Keep going 5089 } 5090 } 5091 } 5092 5093 void executeActions(Handler handler) { 5094 synchronized (mActions) { 5095 final ArrayList<HandlerAction> actions = mActions; 5096 final int count = actions.size(); 5097 5098 for (int i = 0; i < count; i++) { 5099 final HandlerAction handlerAction = actions.get(i); 5100 handler.postDelayed(handlerAction.action, handlerAction.delay); 5101 } 5102 5103 actions.clear(); 5104 } 5105 } 5106 5107 private static class HandlerAction { 5108 Runnable action; 5109 long delay; 5110 5111 @Override 5112 public boolean equals(Object o) { 5113 if (this == o) return true; 5114 if (o == null || getClass() != o.getClass()) return false; 5115 5116 HandlerAction that = (HandlerAction) o; 5117 return !(action != null ? !action.equals(that.action) : that.action != null); 5118 5119 } 5120 5121 @Override 5122 public int hashCode() { 5123 int result = action != null ? action.hashCode() : 0; 5124 result = 31 * result + (int) (delay ^ (delay >>> 32)); 5125 return result; 5126 } 5127 } 5128 } 5129 5130 /** 5131 * Class for managing the accessibility interaction connection 5132 * based on the global accessibility state. 5133 */ 5134 final class AccessibilityInteractionConnectionManager 5135 implements AccessibilityStateChangeListener { 5136 public void onAccessibilityStateChanged(boolean enabled) { 5137 if (enabled) { 5138 ensureConnection(); 5139 if (mAttachInfo != null && mAttachInfo.mHasWindowFocus) { 5140 mView.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED); 5141 View focusedView = mView.findFocus(); 5142 if (focusedView != null && focusedView != mView) { 5143 focusedView.sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_FOCUSED); 5144 } 5145 } 5146 } else { 5147 ensureNoConnection(); 5148 mHandler.obtainMessage(MSG_CLEAR_ACCESSIBILITY_FOCUS_HOST).sendToTarget(); 5149 } 5150 } 5151 5152 public void ensureConnection() { 5153 if (mAttachInfo != null) { 5154 final boolean registered = 5155 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED; 5156 if (!registered) { 5157 mAttachInfo.mAccessibilityWindowId = 5158 mAccessibilityManager.addAccessibilityInteractionConnection(mWindow, 5159 new AccessibilityInteractionConnection(ViewRootImpl.this)); 5160 } 5161 } 5162 } 5163 5164 public void ensureNoConnection() { 5165 final boolean registered = 5166 mAttachInfo.mAccessibilityWindowId != AccessibilityNodeInfo.UNDEFINED; 5167 if (registered) { 5168 mAttachInfo.mAccessibilityWindowId = AccessibilityNodeInfo.UNDEFINED; 5169 mAccessibilityManager.removeAccessibilityInteractionConnection(mWindow); 5170 } 5171 } 5172 } 5173 5174 /** 5175 * This class is an interface this ViewAncestor provides to the 5176 * AccessibilityManagerService to the latter can interact with 5177 * the view hierarchy in this ViewAncestor. 5178 */ 5179 static final class AccessibilityInteractionConnection 5180 extends IAccessibilityInteractionConnection.Stub { 5181 private final WeakReference<ViewRootImpl> mViewRootImpl; 5182 5183 AccessibilityInteractionConnection(ViewRootImpl viewRootImpl) { 5184 mViewRootImpl = new WeakReference<ViewRootImpl>(viewRootImpl); 5185 } 5186 5187 @Override 5188 public void findAccessibilityNodeInfoByAccessibilityId(long accessibilityNodeId, 5189 int windowLeft, int windowTop, int interactionId, 5190 IAccessibilityInteractionConnectionCallback callback, int flags, 5191 int interrogatingPid, long interrogatingTid) { 5192 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 5193 if (viewRootImpl != null && viewRootImpl.mView != null) { 5194 viewRootImpl.getAccessibilityInteractionController() 5195 .findAccessibilityNodeInfoByAccessibilityIdClientThread(accessibilityNodeId, 5196 windowLeft, windowTop, interactionId, callback, flags, interrogatingPid, 5197 interrogatingTid); 5198 } else { 5199 // We cannot make the call and notify the caller so it does not wait. 5200 try { 5201 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 5202 } catch (RemoteException re) { 5203 /* best effort - ignore */ 5204 } 5205 } 5206 } 5207 5208 @Override 5209 public void performAccessibilityAction(long accessibilityNodeId, int action, 5210 Bundle arguments, int interactionId, 5211 IAccessibilityInteractionConnectionCallback callback, int flags, 5212 int interogatingPid, long interrogatingTid) { 5213 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 5214 if (viewRootImpl != null && viewRootImpl.mView != null) { 5215 viewRootImpl.getAccessibilityInteractionController() 5216 .performAccessibilityActionClientThread(accessibilityNodeId, action, arguments, 5217 interactionId, callback, flags, interogatingPid, interrogatingTid); 5218 } else { 5219 // We cannot make the call and notify the caller so it does not wait. 5220 try { 5221 callback.setPerformAccessibilityActionResult(false, interactionId); 5222 } catch (RemoteException re) { 5223 /* best effort - ignore */ 5224 } 5225 } 5226 } 5227 5228 @Override 5229 public void findAccessibilityNodeInfoByViewId(long accessibilityNodeId, int viewId, 5230 int windowLeft, int windowTop, int interactionId, 5231 IAccessibilityInteractionConnectionCallback callback, int flags, 5232 int interrogatingPid, long interrogatingTid) { 5233 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 5234 if (viewRootImpl != null && viewRootImpl.mView != null) { 5235 viewRootImpl.getAccessibilityInteractionController() 5236 .findAccessibilityNodeInfoByViewIdClientThread(accessibilityNodeId, viewId, 5237 windowLeft, windowTop, interactionId, callback, flags, interrogatingPid, 5238 interrogatingTid); 5239 } else { 5240 // We cannot make the call and notify the caller so it does not wait. 5241 try { 5242 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 5243 } catch (RemoteException re) { 5244 /* best effort - ignore */ 5245 } 5246 } 5247 } 5248 5249 @Override 5250 public void findAccessibilityNodeInfosByText(long accessibilityNodeId, String text, 5251 int windowLeft, int windowTop, int interactionId, 5252 IAccessibilityInteractionConnectionCallback callback, int flags, 5253 int interrogatingPid, long interrogatingTid) { 5254 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 5255 if (viewRootImpl != null && viewRootImpl.mView != null) { 5256 viewRootImpl.getAccessibilityInteractionController() 5257 .findAccessibilityNodeInfosByTextClientThread(accessibilityNodeId, text, 5258 windowLeft, windowTop, interactionId, callback, flags, interrogatingPid, 5259 interrogatingTid); 5260 } else { 5261 // We cannot make the call and notify the caller so it does not wait. 5262 try { 5263 callback.setFindAccessibilityNodeInfosResult(null, interactionId); 5264 } catch (RemoteException re) { 5265 /* best effort - ignore */ 5266 } 5267 } 5268 } 5269 5270 @Override 5271 public void findFocus(long accessibilityNodeId, int focusType, int windowLeft, 5272 int windowTop, int interactionId, 5273 IAccessibilityInteractionConnectionCallback callback, int flags, 5274 int interrogatingPid, long interrogatingTid) { 5275 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 5276 if (viewRootImpl != null && viewRootImpl.mView != null) { 5277 viewRootImpl.getAccessibilityInteractionController() 5278 .findFocusClientThread(accessibilityNodeId, focusType, windowLeft, windowTop, 5279 interactionId, callback, flags, interrogatingPid, interrogatingTid); 5280 } else { 5281 // We cannot make the call and notify the caller so it does not wait. 5282 try { 5283 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 5284 } catch (RemoteException re) { 5285 /* best effort - ignore */ 5286 } 5287 } 5288 } 5289 5290 @Override 5291 public void focusSearch(long accessibilityNodeId, int direction, int windowLeft, 5292 int windowTop, int interactionId, 5293 IAccessibilityInteractionConnectionCallback callback, int flags, 5294 int interrogatingPid, long interrogatingTid) { 5295 ViewRootImpl viewRootImpl = mViewRootImpl.get(); 5296 if (viewRootImpl != null && viewRootImpl.mView != null) { 5297 viewRootImpl.getAccessibilityInteractionController() 5298 .focusSearchClientThread(accessibilityNodeId, direction, windowLeft, windowTop, 5299 interactionId, callback, flags, interrogatingPid, interrogatingTid); 5300 } else { 5301 // We cannot make the call and notify the caller so it does not wait. 5302 try { 5303 callback.setFindAccessibilityNodeInfoResult(null, interactionId); 5304 } catch (RemoteException re) { 5305 /* best effort - ignore */ 5306 } 5307 } 5308 } 5309 } 5310 5311 private class SendWindowContentChangedAccessibilityEvent implements Runnable { 5312 public View mSource; 5313 5314 public void run() { 5315 if (mSource != null) { 5316 mSource.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED); 5317 mSource.resetAccessibilityStateChanged(); 5318 mSource = null; 5319 } 5320 } 5321 } 5322 } 5323