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