| /* |
| * Copyright (C) 2006 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package android.view; |
| |
| import static android.view.WindowManagerPolicyConstants.APPLICATION_MEDIA_OVERLAY_SUBLAYER; |
| import static android.view.WindowManagerPolicyConstants.APPLICATION_MEDIA_SUBLAYER; |
| import static android.view.WindowManagerPolicyConstants.APPLICATION_PANEL_SUBLAYER; |
| |
| import android.annotation.NonNull; |
| import android.annotation.Nullable; |
| import android.compat.annotation.UnsupportedAppUsage; |
| import android.content.ContentResolver; |
| import android.content.Context; |
| import android.content.res.CompatibilityInfo.Translator; |
| import android.graphics.BLASTBufferQueue; |
| import android.graphics.BlendMode; |
| import android.graphics.Canvas; |
| import android.graphics.Color; |
| import android.graphics.Matrix; |
| import android.graphics.Paint; |
| import android.graphics.PixelFormat; |
| import android.graphics.Point; |
| import android.graphics.Rect; |
| import android.graphics.Region; |
| import android.graphics.RenderNode; |
| import android.os.Build; |
| import android.os.Handler; |
| import android.os.IBinder; |
| import android.os.Looper; |
| import android.os.SystemClock; |
| import android.provider.Settings; |
| import android.util.AttributeSet; |
| import android.util.Log; |
| import android.view.SurfaceControl.Transaction; |
| import android.view.accessibility.AccessibilityNodeInfo; |
| import android.view.accessibility.IAccessibilityEmbeddedConnection; |
| |
| import com.android.internal.view.SurfaceCallbackHelper; |
| |
| import java.util.ArrayList; |
| import java.util.concurrent.locks.ReentrantLock; |
| |
| /** |
| * Provides a dedicated drawing surface embedded inside of a view hierarchy. |
| * You can control the format of this surface and, if you like, its size; the |
| * SurfaceView takes care of placing the surface at the correct location on the |
| * screen |
| * |
| * <p>The surface is Z ordered so that it is behind the window holding its |
| * SurfaceView; the SurfaceView punches a hole in its window to allow its |
| * surface to be displayed. The view hierarchy will take care of correctly |
| * compositing with the Surface any siblings of the SurfaceView that would |
| * normally appear on top of it. This can be used to place overlays such as |
| * buttons on top of the Surface, though note however that it can have an |
| * impact on performance since a full alpha-blended composite will be performed |
| * each time the Surface changes. |
| * |
| * <p> The transparent region that makes the surface visible is based on the |
| * layout positions in the view hierarchy. If the post-layout transform |
| * properties are used to draw a sibling view on top of the SurfaceView, the |
| * view may not be properly composited with the surface. |
| * |
| * <p>Access to the underlying surface is provided via the SurfaceHolder interface, |
| * which can be retrieved by calling {@link #getHolder}. |
| * |
| * <p>The Surface will be created for you while the SurfaceView's window is |
| * visible; you should implement {@link SurfaceHolder.Callback#surfaceCreated} |
| * and {@link SurfaceHolder.Callback#surfaceDestroyed} to discover when the |
| * Surface is created and destroyed as the window is shown and hidden. |
| * |
| * <p>One of the purposes of this class is to provide a surface in which a |
| * secondary thread can render into the screen. If you are going to use it |
| * this way, you need to be aware of some threading semantics: |
| * |
| * <ul> |
| * <li> All SurfaceView and |
| * {@link SurfaceHolder.Callback SurfaceHolder.Callback} methods will be called |
| * from the thread running the SurfaceView's window (typically the main thread |
| * of the application). They thus need to correctly synchronize with any |
| * state that is also touched by the drawing thread. |
| * <li> You must ensure that the drawing thread only touches the underlying |
| * Surface while it is valid -- between |
| * {@link SurfaceHolder.Callback#surfaceCreated SurfaceHolder.Callback.surfaceCreated()} |
| * and |
| * {@link SurfaceHolder.Callback#surfaceDestroyed SurfaceHolder.Callback.surfaceDestroyed()}. |
| * </ul> |
| * |
| * <p class="note"><strong>Note:</strong> Starting in platform version |
| * {@link android.os.Build.VERSION_CODES#N}, SurfaceView's window position is |
| * updated synchronously with other View rendering. This means that translating |
| * and scaling a SurfaceView on screen will not cause rendering artifacts. Such |
| * artifacts may occur on previous versions of the platform when its window is |
| * positioned asynchronously.</p> |
| */ |
| public class SurfaceView extends View implements ViewRootImpl.SurfaceChangedCallback { |
| private static final String TAG = "SurfaceView"; |
| private static final boolean DEBUG = false; |
| private static final boolean DEBUG_POSITION = false; |
| |
| @UnsupportedAppUsage |
| final ArrayList<SurfaceHolder.Callback> mCallbacks = new ArrayList<>(); |
| |
| final int[] mLocation = new int[2]; |
| |
| @UnsupportedAppUsage |
| final ReentrantLock mSurfaceLock = new ReentrantLock(); |
| @UnsupportedAppUsage |
| final Surface mSurface = new Surface(); // Current surface in use |
| @UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.P, trackingBug = 115609023) |
| boolean mDrawingStopped = true; |
| // We use this to track if the application has produced a frame |
| // in to the Surface. Up until that point, we should be careful not to punch |
| // holes. |
| boolean mDrawFinished = false; |
| |
| final Rect mScreenRect = new Rect(); |
| private final SurfaceSession mSurfaceSession = new SurfaceSession(); |
| |
| SurfaceControl mSurfaceControl; |
| // In the case of format changes we switch out the surface in-place |
| // we need to preserve the old one until the new one has drawn. |
| SurfaceControl mDeferredDestroySurfaceControl; |
| SurfaceControl mBackgroundControl; |
| private boolean mDisableBackgroundLayer = false; |
| |
| /** |
| * We use this lock in SOME cases when reading or writing SurfaceControl, |
| * but use the following model so that the RenderThread can run locklessly |
| * in the position up-date case. |
| * |
| * 1. UI Thread can read from mSurfaceControl (use in Transactions) without |
| * holding the lock. |
| * 2. UI Thread will hold the lock when writing to mSurfaceControl (calling release |
| * or remove). |
| * 3. Render thread will also hold the lock when writing to mSurfaceControl (e.g. |
| * calling release from positionLost). |
| * 3. RenderNode.PositionUpdateListener::positionChanged will only be called |
| * when the UI thread is paused (blocked on the Render thread). |
| * 4. positionChanged thus will not be required to hold the lock as the |
| * UI thread is blocked, and the other writer is the RT itself. |
| */ |
| final Object mSurfaceControlLock = new Object(); |
| final Rect mTmpRect = new Rect(); |
| |
| Paint mRoundedViewportPaint; |
| |
| int mSubLayer = APPLICATION_MEDIA_SUBLAYER; |
| |
| @UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.P, trackingBug = 115609023) |
| boolean mIsCreating = false; |
| private volatile boolean mRtHandlingPositionUpdates = false; |
| private volatile boolean mRtReleaseSurfaces = false; |
| |
| private final ViewTreeObserver.OnScrollChangedListener mScrollChangedListener = |
| this::updateSurface; |
| |
| @UnsupportedAppUsage |
| private final ViewTreeObserver.OnPreDrawListener mDrawListener = () -> { |
| // reposition ourselves where the surface is |
| mHaveFrame = getWidth() > 0 && getHeight() > 0; |
| updateSurface(); |
| return true; |
| }; |
| |
| boolean mRequestedVisible = false; |
| boolean mWindowVisibility = false; |
| boolean mLastWindowVisibility = false; |
| boolean mViewVisibility = false; |
| boolean mWindowStopped = false; |
| |
| @UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.P, trackingBug = 115609023) |
| int mRequestedWidth = -1; |
| @UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.P, trackingBug = 115609023) |
| int mRequestedHeight = -1; |
| /* Set SurfaceView's format to 565 by default to maintain backward |
| * compatibility with applications assuming this format. |
| */ |
| @UnsupportedAppUsage |
| int mRequestedFormat = PixelFormat.RGB_565; |
| |
| boolean mUseAlpha = false; |
| float mSurfaceAlpha = 1f; |
| boolean mClipSurfaceToBounds; |
| int mBackgroundColor = Color.BLACK; |
| |
| @UnsupportedAppUsage |
| boolean mHaveFrame = false; |
| boolean mSurfaceCreated = false; |
| @UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.P, trackingBug = 115609023) |
| long mLastLockTime = 0; |
| |
| boolean mVisible = false; |
| int mWindowSpaceLeft = -1; |
| int mWindowSpaceTop = -1; |
| int mSurfaceWidth = -1; |
| int mSurfaceHeight = -1; |
| float mCornerRadius; |
| @UnsupportedAppUsage |
| int mFormat = -1; |
| @UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.P, trackingBug = 115609023) |
| final Rect mSurfaceFrame = new Rect(); |
| int mLastSurfaceWidth = -1, mLastSurfaceHeight = -1; |
| int mTransformHint = 0; |
| |
| private boolean mGlobalListenersAdded; |
| private boolean mAttachedToWindow; |
| |
| private int mSurfaceFlags = SurfaceControl.HIDDEN; |
| |
| private int mPendingReportDraws; |
| |
| /** |
| * Transaction that should be used from the render thread. This transaction is only thread safe |
| * with other calls directly from the render thread. |
| */ |
| private final SurfaceControl.Transaction mRtTransaction = new SurfaceControl.Transaction(); |
| |
| /** |
| * Transaction that should be used whe |
| * {@link HardwareRenderer.FrameDrawingCallback#onFrameDraw} is invoked. All |
| * frame callbacks can use the same transaction since they will be thread safe |
| */ |
| private final SurfaceControl.Transaction mFrameCallbackTransaction = |
| new SurfaceControl.Transaction(); |
| |
| /** |
| * A temporary transaction holder that should only be used when applying right away. There |
| * should be no assumption about thread safety for this transaction. |
| */ |
| private final SurfaceControl.Transaction mTmpTransaction = new SurfaceControl.Transaction(); |
| |
| private int mParentSurfaceSequenceId; |
| |
| private RemoteAccessibilityController mRemoteAccessibilityController = |
| new RemoteAccessibilityController(this); |
| |
| private final Matrix mTmpMatrix = new Matrix(); |
| |
| SurfaceControlViewHost.SurfacePackage mSurfacePackage; |
| private final boolean mUseBlastSync = true; |
| |
| /** |
| * Returns {@code true} if buffers should be submitted via blast |
| */ |
| private static boolean useBlastAdapter(Context context) { |
| ContentResolver contentResolver = context.getContentResolver(); |
| return Settings.Global.getInt(contentResolver, |
| Settings.Global.DEVELOPMENT_USE_BLAST_ADAPTER_SV, 1 /* default */) == 1; |
| } |
| |
| private final boolean mUseBlastAdapter; |
| private SurfaceControl mBlastSurfaceControl; |
| private BLASTBufferQueue mBlastBufferQueue; |
| |
| public SurfaceView(Context context) { |
| this(context, null); |
| } |
| |
| public SurfaceView(Context context, AttributeSet attrs) { |
| this(context, attrs, 0); |
| } |
| |
| public SurfaceView(Context context, AttributeSet attrs, int defStyleAttr) { |
| this(context, attrs, defStyleAttr, 0); |
| } |
| |
| public SurfaceView(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) { |
| this(context, attrs, defStyleAttr, defStyleRes, false); |
| } |
| |
| /** @hide */ |
| public SurfaceView(@NonNull Context context, @Nullable AttributeSet attrs, int defStyleAttr, |
| int defStyleRes, boolean disableBackgroundLayer) { |
| super(context, attrs, defStyleAttr, defStyleRes); |
| mUseBlastAdapter = useBlastAdapter(context); |
| |
| setWillNotDraw(true); |
| mDisableBackgroundLayer = disableBackgroundLayer; |
| } |
| |
| /** |
| * Return the SurfaceHolder providing access and control over this |
| * SurfaceView's underlying surface. |
| * |
| * @return SurfaceHolder The holder of the surface. |
| */ |
| public SurfaceHolder getHolder() { |
| return mSurfaceHolder; |
| } |
| |
| private void updateRequestedVisibility() { |
| mRequestedVisible = mViewVisibility && mWindowVisibility && !mWindowStopped; |
| } |
| |
| private void setWindowStopped(boolean stopped) { |
| mWindowStopped = stopped; |
| updateRequestedVisibility(); |
| updateSurface(); |
| } |
| |
| @Override |
| protected void onAttachedToWindow() { |
| super.onAttachedToWindow(); |
| |
| getViewRootImpl().addSurfaceChangedCallback(this); |
| mWindowStopped = false; |
| |
| mViewVisibility = getVisibility() == VISIBLE; |
| updateRequestedVisibility(); |
| |
| mAttachedToWindow = true; |
| mParent.requestTransparentRegion(SurfaceView.this); |
| if (!mGlobalListenersAdded) { |
| ViewTreeObserver observer = getViewTreeObserver(); |
| observer.addOnScrollChangedListener(mScrollChangedListener); |
| observer.addOnPreDrawListener(mDrawListener); |
| mGlobalListenersAdded = true; |
| } |
| } |
| |
| @Override |
| protected void onWindowVisibilityChanged(int visibility) { |
| super.onWindowVisibilityChanged(visibility); |
| mWindowVisibility = visibility == VISIBLE; |
| updateRequestedVisibility(); |
| updateSurface(); |
| } |
| |
| @Override |
| public void setVisibility(int visibility) { |
| super.setVisibility(visibility); |
| mViewVisibility = visibility == VISIBLE; |
| boolean newRequestedVisible = mWindowVisibility && mViewVisibility && !mWindowStopped; |
| if (newRequestedVisible != mRequestedVisible) { |
| // our base class (View) invalidates the layout only when |
| // we go from/to the GONE state. However, SurfaceView needs |
| // to request a re-layout when the visibility changes at all. |
| // This is needed because the transparent region is computed |
| // as part of the layout phase, and it changes (obviously) when |
| // the visibility changes. |
| requestLayout(); |
| } |
| mRequestedVisible = newRequestedVisible; |
| updateSurface(); |
| } |
| |
| /** |
| * Make alpha value of this view reflect onto the surface. This can only be called from at most |
| * one SurfaceView within a view tree. |
| * |
| * <p class="note"><strong>Note:</strong> Alpha value of the view is ignored and the underlying |
| * surface is rendered opaque by default.</p> |
| * |
| * @hide |
| */ |
| public void setUseAlpha() { |
| if (!mUseAlpha) { |
| mUseAlpha = true; |
| updateSurfaceAlpha(); |
| } |
| } |
| |
| @Override |
| public void setAlpha(float alpha) { |
| // Sets the opacity of the view to a value, where 0 means the view is completely transparent |
| // and 1 means the view is completely opaque. |
| // |
| // Note: Alpha value of this view is ignored by default. To enable alpha blending, you need |
| // to call setUseAlpha() as well. |
| // This view doesn't support translucent opacity if the view is located z-below, since the |
| // logic to punch a hole in the view hierarchy cannot handle such case. See also |
| // #clearSurfaceViewPort(Canvas) |
| if (DEBUG) { |
| Log.d(TAG, System.identityHashCode(this) |
| + " setAlpha: mUseAlpha = " + mUseAlpha + " alpha=" + alpha); |
| } |
| super.setAlpha(alpha); |
| updateSurfaceAlpha(); |
| } |
| |
| private float getFixedAlpha() { |
| // Compute alpha value to be set on the underlying surface. |
| final float alpha = getAlpha(); |
| return mUseAlpha && (mSubLayer > 0 || alpha == 0f) ? alpha : 1f; |
| } |
| |
| private void updateSurfaceAlpha() { |
| if (!mUseAlpha) { |
| if (DEBUG) { |
| Log.d(TAG, System.identityHashCode(this) |
| + " updateSurfaceAlpha: setUseAlpha() is not called, ignored."); |
| } |
| return; |
| } |
| final float viewAlpha = getAlpha(); |
| if (mSubLayer < 0 && 0f < viewAlpha && viewAlpha < 1f) { |
| Log.w(TAG, System.identityHashCode(this) |
| + " updateSurfaceAlpha:" |
| + " translucent color is not supported for a surface placed z-below."); |
| } |
| if (!mHaveFrame) { |
| if (DEBUG) { |
| Log.d(TAG, System.identityHashCode(this) |
| + " updateSurfaceAlpha: has no surface."); |
| } |
| return; |
| } |
| final ViewRootImpl viewRoot = getViewRootImpl(); |
| if (viewRoot == null) { |
| if (DEBUG) { |
| Log.d(TAG, System.identityHashCode(this) |
| + " updateSurfaceAlpha: ViewRootImpl not available."); |
| } |
| return; |
| } |
| if (mSurfaceControl == null) { |
| if (DEBUG) { |
| Log.d(TAG, System.identityHashCode(this) |
| + "updateSurfaceAlpha:" |
| + " surface is not yet created, or already released."); |
| } |
| return; |
| } |
| final Surface parent = viewRoot.mSurface; |
| if (parent == null || !parent.isValid()) { |
| if (DEBUG) { |
| Log.d(TAG, System.identityHashCode(this) |
| + " updateSurfaceAlpha: ViewRootImpl has no valid surface"); |
| } |
| return; |
| } |
| final float alpha = getFixedAlpha(); |
| if (alpha != mSurfaceAlpha) { |
| if (isHardwareAccelerated()) { |
| /* |
| * Schedule a callback that reflects an alpha value onto the underlying surfaces. |
| * This gets called on a RenderThread worker thread, so members accessed here must |
| * be protected by a lock. |
| */ |
| viewRoot.registerRtFrameCallback(frame -> { |
| try { |
| synchronized (mSurfaceControlLock) { |
| if (!parent.isValid()) { |
| if (DEBUG) { |
| Log.d(TAG, System.identityHashCode(this) |
| + " updateSurfaceAlpha RT:" |
| + " ViewRootImpl has no valid surface"); |
| } |
| return; |
| } |
| if (mSurfaceControl == null) { |
| if (DEBUG) { |
| Log.d(TAG, System.identityHashCode(this) |
| + "updateSurfaceAlpha RT:" |
| + " mSurfaceControl has already released"); |
| } |
| return; |
| } |
| if (DEBUG) { |
| Log.d(TAG, System.identityHashCode(this) |
| + " updateSurfaceAlpha RT: set alpha=" + alpha); |
| } |
| |
| mFrameCallbackTransaction.setAlpha(mSurfaceControl, alpha); |
| applyOrMergeTransaction(mFrameCallbackTransaction, frame); |
| } |
| // It's possible that mSurfaceControl is released in the UI thread before |
| // the transaction completes. If that happens, an exception is thrown, which |
| // must be caught immediately. |
| } catch (Exception e) { |
| Log.e(TAG, System.identityHashCode(this) |
| + "updateSurfaceAlpha RT: Exception during surface transaction", e); |
| } |
| }); |
| damageInParent(); |
| } else { |
| if (DEBUG) { |
| Log.d(TAG, System.identityHashCode(this) |
| + " updateSurfaceAlpha: set alpha=" + alpha); |
| } |
| mTmpTransaction.setAlpha(mSurfaceControl, alpha).apply(); |
| } |
| mSurfaceAlpha = alpha; |
| } |
| } |
| |
| private void performDrawFinished() { |
| if (mDeferredDestroySurfaceControl != null) { |
| synchronized (mSurfaceControlLock) { |
| mTmpTransaction.remove(mDeferredDestroySurfaceControl).apply(); |
| mDeferredDestroySurfaceControl = null; |
| } |
| } |
| |
| if (mPendingReportDraws > 0) { |
| mDrawFinished = true; |
| if (mAttachedToWindow) { |
| mParent.requestTransparentRegion(SurfaceView.this); |
| notifyDrawFinished(); |
| invalidate(); |
| } |
| } else { |
| Log.e(TAG, System.identityHashCode(this) + "finished drawing" |
| + " but no pending report draw (extra call" |
| + " to draw completion runnable?)"); |
| } |
| } |
| |
| void notifyDrawFinished() { |
| ViewRootImpl viewRoot = getViewRootImpl(); |
| if (viewRoot != null) { |
| viewRoot.pendingDrawFinished(); |
| } |
| mPendingReportDraws--; |
| } |
| |
| @Override |
| protected void onDetachedFromWindow() { |
| ViewRootImpl viewRoot = getViewRootImpl(); |
| // It's possible to create a SurfaceView using the default constructor and never |
| // attach it to a view hierarchy, this is a common use case when dealing with |
| // OpenGL. A developer will probably create a new GLSurfaceView, and let it manage |
| // the lifecycle. Instead of attaching it to a view, they can just pass |
| // the SurfaceHolder forward, most live wallpapers do it. |
| if (viewRoot != null) { |
| viewRoot.removeSurfaceChangedCallback(this); |
| } |
| |
| mAttachedToWindow = false; |
| if (mGlobalListenersAdded) { |
| ViewTreeObserver observer = getViewTreeObserver(); |
| observer.removeOnScrollChangedListener(mScrollChangedListener); |
| observer.removeOnPreDrawListener(mDrawListener); |
| mGlobalListenersAdded = false; |
| } |
| |
| while (mPendingReportDraws > 0) { |
| notifyDrawFinished(); |
| } |
| |
| mRequestedVisible = false; |
| |
| updateSurface(); |
| tryReleaseSurfaces(); |
| |
| // We don't release this as part of releaseSurfaces as |
| // that is also called on transient visibility changes. We can't |
| // recreate this Surface, so only release it when we are fully |
| // detached. |
| if (mSurfacePackage != null) { |
| final SurfaceControl sc = mSurfacePackage.getSurfaceControl(); |
| if (sc != null && sc.isValid()) { |
| mTmpTransaction.reparent(sc, null).apply(); |
| } |
| mSurfacePackage.release(); |
| mSurfacePackage = null; |
| } |
| |
| mHaveFrame = false; |
| super.onDetachedFromWindow(); |
| } |
| |
| @Override |
| protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { |
| int width = mRequestedWidth >= 0 |
| ? resolveSizeAndState(mRequestedWidth, widthMeasureSpec, 0) |
| : getDefaultSize(0, widthMeasureSpec); |
| int height = mRequestedHeight >= 0 |
| ? resolveSizeAndState(mRequestedHeight, heightMeasureSpec, 0) |
| : getDefaultSize(0, heightMeasureSpec); |
| setMeasuredDimension(width, height); |
| } |
| |
| /** @hide */ |
| @Override |
| @UnsupportedAppUsage |
| protected boolean setFrame(int left, int top, int right, int bottom) { |
| boolean result = super.setFrame(left, top, right, bottom); |
| updateSurface(); |
| return result; |
| } |
| |
| @Override |
| public boolean gatherTransparentRegion(Region region) { |
| if (isAboveParent() || !mDrawFinished) { |
| return super.gatherTransparentRegion(region); |
| } |
| |
| boolean opaque = true; |
| if ((mPrivateFlags & PFLAG_SKIP_DRAW) == 0) { |
| // this view draws, remove it from the transparent region |
| opaque = super.gatherTransparentRegion(region); |
| } else if (region != null) { |
| int w = getWidth(); |
| int h = getHeight(); |
| if (w>0 && h>0) { |
| getLocationInWindow(mLocation); |
| // otherwise, punch a hole in the whole hierarchy |
| int l = mLocation[0]; |
| int t = mLocation[1]; |
| region.op(l, t, l+w, t+h, Region.Op.UNION); |
| } |
| } |
| if (PixelFormat.formatHasAlpha(mRequestedFormat)) { |
| opaque = false; |
| } |
| return opaque; |
| } |
| |
| @Override |
| public void draw(Canvas canvas) { |
| if (mDrawFinished && !isAboveParent()) { |
| // draw() is not called when SKIP_DRAW is set |
| if ((mPrivateFlags & PFLAG_SKIP_DRAW) == 0) { |
| // punch a whole in the view-hierarchy below us |
| clearSurfaceViewPort(canvas); |
| } |
| } |
| super.draw(canvas); |
| } |
| |
| @Override |
| protected void dispatchDraw(Canvas canvas) { |
| if (mDrawFinished && !isAboveParent()) { |
| // draw() is not called when SKIP_DRAW is set |
| if ((mPrivateFlags & PFLAG_SKIP_DRAW) == PFLAG_SKIP_DRAW) { |
| // punch a whole in the view-hierarchy below us |
| clearSurfaceViewPort(canvas); |
| } |
| } |
| super.dispatchDraw(canvas); |
| } |
| |
| /** |
| * Control whether the surface is clipped to the same bounds as the View. If true, then |
| * the bounds set by {@link #setClipBounds(Rect)} are applied to the surface as window-crop. |
| * |
| * @param enabled whether to enable surface clipping |
| * @hide |
| */ |
| public void setEnableSurfaceClipping(boolean enabled) { |
| mClipSurfaceToBounds = enabled; |
| invalidate(); |
| } |
| |
| @Override |
| public void setClipBounds(Rect clipBounds) { |
| super.setClipBounds(clipBounds); |
| |
| if (!mClipSurfaceToBounds) { |
| return; |
| } |
| |
| // When cornerRadius is non-zero, a draw() is required to update |
| // the viewport (rounding the corners of the clipBounds). |
| if (mCornerRadius > 0f && !isAboveParent()) { |
| invalidate(); |
| } |
| |
| if (mSurfaceControl != null) { |
| if (mClipBounds != null) { |
| mTmpRect.set(mClipBounds); |
| } else { |
| mTmpRect.set(0, 0, mSurfaceWidth, mSurfaceHeight); |
| } |
| SyncRtSurfaceTransactionApplier applier = new SyncRtSurfaceTransactionApplier(this); |
| applier.scheduleApply( |
| new SyncRtSurfaceTransactionApplier.SurfaceParams.Builder(mSurfaceControl) |
| .withWindowCrop(mTmpRect) |
| .build()); |
| } |
| } |
| |
| private void clearSurfaceViewPort(Canvas canvas) { |
| if (mCornerRadius > 0f) { |
| canvas.getClipBounds(mTmpRect); |
| if (mClipSurfaceToBounds && mClipBounds != null) { |
| mTmpRect.intersect(mClipBounds); |
| } |
| canvas.punchHole( |
| mTmpRect.left, |
| mTmpRect.top, |
| mTmpRect.right, |
| mTmpRect.bottom, |
| mCornerRadius, |
| mCornerRadius |
| ); |
| } else { |
| canvas.punchHole(0f, 0f, getWidth(), getHeight(), 0f, 0f); |
| } |
| } |
| |
| /** |
| * Sets the corner radius for the SurfaceView. This will round both the corners of the |
| * underlying surface, as well as the corners of the hole created to expose the surface. |
| * |
| * @param cornerRadius the new radius of the corners in pixels |
| * @hide |
| */ |
| public void setCornerRadius(float cornerRadius) { |
| mCornerRadius = cornerRadius; |
| if (mCornerRadius > 0f && mRoundedViewportPaint == null) { |
| mRoundedViewportPaint = new Paint(Paint.ANTI_ALIAS_FLAG); |
| mRoundedViewportPaint.setBlendMode(BlendMode.CLEAR); |
| mRoundedViewportPaint.setColor(0); |
| } |
| invalidate(); |
| } |
| |
| /** |
| * Returns the corner radius for the SurfaceView. |
| |
| * @return the radius of the corners in pixels |
| * @hide |
| */ |
| public float getCornerRadius() { |
| return mCornerRadius; |
| } |
| |
| /** |
| * Control whether the surface view's surface is placed on top of another |
| * regular surface view in the window (but still behind the window itself). |
| * This is typically used to place overlays on top of an underlying media |
| * surface view. |
| * |
| * <p>Note that this must be set before the surface view's containing |
| * window is attached to the window manager. |
| * |
| * <p>Calling this overrides any previous call to {@link #setZOrderOnTop}. |
| */ |
| public void setZOrderMediaOverlay(boolean isMediaOverlay) { |
| mSubLayer = isMediaOverlay |
| ? APPLICATION_MEDIA_OVERLAY_SUBLAYER : APPLICATION_MEDIA_SUBLAYER; |
| } |
| |
| /** |
| * Control whether the surface view's surface is placed on top of its |
| * window. Normally it is placed behind the window, to allow it to |
| * (for the most part) appear to composite with the views in the |
| * hierarchy. By setting this, you cause it to be placed above the |
| * window. This means that none of the contents of the window this |
| * SurfaceView is in will be visible on top of its surface. |
| * |
| * <p>Note that this must be set before the surface view's containing |
| * window is attached to the window manager. If you target {@link Build.VERSION_CODES#R} |
| * the Z ordering can be changed dynamically if the backing surface is |
| * created, otherwise it would be applied at surface construction time. |
| * |
| * <p>Calling this overrides any previous call to {@link #setZOrderMediaOverlay}. |
| * |
| * @param onTop Whether to show the surface on top of this view's window. |
| */ |
| public void setZOrderOnTop(boolean onTop) { |
| // In R and above we allow dynamic layer changes. |
| final boolean allowDynamicChange = getContext().getApplicationInfo().targetSdkVersion |
| > Build.VERSION_CODES.Q; |
| setZOrderedOnTop(onTop, allowDynamicChange); |
| } |
| |
| /** |
| * @return Whether the surface backing this view appears on top of its parent. |
| * |
| * @hide |
| */ |
| public boolean isZOrderedOnTop() { |
| return mSubLayer > 0; |
| } |
| |
| /** |
| * Controls whether the surface view's surface is placed on top of its |
| * window. Normally it is placed behind the window, to allow it to |
| * (for the most part) appear to composite with the views in the |
| * hierarchy. By setting this, you cause it to be placed above the |
| * window. This means that none of the contents of the window this |
| * SurfaceView is in will be visible on top of its surface. |
| * |
| * <p>Calling this overrides any previous call to {@link #setZOrderMediaOverlay}. |
| * |
| * @param onTop Whether to show the surface on top of this view's window. |
| * @param allowDynamicChange Whether this can happen after the surface is created. |
| * @return Whether the Z ordering changed. |
| * |
| * @hide |
| */ |
| public boolean setZOrderedOnTop(boolean onTop, boolean allowDynamicChange) { |
| final int subLayer; |
| if (onTop) { |
| subLayer = APPLICATION_PANEL_SUBLAYER; |
| } else { |
| subLayer = APPLICATION_MEDIA_SUBLAYER; |
| } |
| if (mSubLayer == subLayer) { |
| return false; |
| } |
| mSubLayer = subLayer; |
| |
| if (!allowDynamicChange) { |
| return false; |
| } |
| if (mSurfaceControl == null) { |
| return true; |
| } |
| final ViewRootImpl viewRoot = getViewRootImpl(); |
| if (viewRoot == null) { |
| return true; |
| } |
| final Surface parent = viewRoot.mSurface; |
| if (parent == null || !parent.isValid()) { |
| return true; |
| } |
| |
| /* |
| * Schedule a callback that reflects an alpha value onto the underlying surfaces. |
| * This gets called on a RenderThread worker thread, so members accessed here must |
| * be protected by a lock. |
| */ |
| viewRoot.registerRtFrameCallback(frame -> { |
| try { |
| synchronized (mSurfaceControlLock) { |
| if (!parent.isValid() || mSurfaceControl == null) { |
| return; |
| } |
| |
| updateRelativeZ(mFrameCallbackTransaction); |
| applyOrMergeTransaction(mFrameCallbackTransaction, frame); |
| } |
| // It's possible that mSurfaceControl is released in the UI thread before |
| // the transaction completes. If that happens, an exception is thrown, which |
| // must be caught immediately. |
| } catch (Exception e) { |
| Log.e(TAG, System.identityHashCode(this) |
| + "setZOrderOnTop RT: Exception during surface transaction", e); |
| } |
| }); |
| |
| invalidate(); |
| |
| return true; |
| } |
| |
| /** |
| * Control whether the surface view's content should be treated as secure, |
| * preventing it from appearing in screenshots or from being viewed on |
| * non-secure displays. |
| * |
| * <p>Note that this must be set before the surface view's containing |
| * window is attached to the window manager. |
| * |
| * <p>See {@link android.view.Display#FLAG_SECURE} for details. |
| * |
| * @param isSecure True if the surface view is secure. |
| */ |
| public void setSecure(boolean isSecure) { |
| if (isSecure) { |
| mSurfaceFlags |= SurfaceControl.SECURE; |
| } else { |
| mSurfaceFlags &= ~SurfaceControl.SECURE; |
| } |
| } |
| |
| private void updateOpaqueFlag() { |
| if (!PixelFormat.formatHasAlpha(mRequestedFormat)) { |
| mSurfaceFlags |= SurfaceControl.OPAQUE; |
| } else { |
| mSurfaceFlags &= ~SurfaceControl.OPAQUE; |
| } |
| } |
| |
| private void updateBackgroundVisibility(Transaction t) { |
| if (mBackgroundControl == null) { |
| return; |
| } |
| if ((mSubLayer < 0) && ((mSurfaceFlags & SurfaceControl.OPAQUE) != 0) |
| && !mDisableBackgroundLayer) { |
| t.show(mBackgroundControl); |
| } else { |
| t.hide(mBackgroundControl); |
| } |
| } |
| |
| private Transaction updateBackgroundColor(Transaction t) { |
| final float[] colorComponents = new float[] { Color.red(mBackgroundColor) / 255.f, |
| Color.green(mBackgroundColor) / 255.f, Color.blue(mBackgroundColor) / 255.f }; |
| t.setColor(mBackgroundControl, colorComponents); |
| return t; |
| } |
| |
| private void tryReleaseSurfaces() { |
| mSurfaceAlpha = 1f; |
| |
| synchronized (mSurfaceControlLock) { |
| mSurface.destroy(); |
| if (mBlastBufferQueue != null) { |
| mBlastBufferQueue.destroy(); |
| mBlastBufferQueue = null; |
| } |
| |
| if (mRtHandlingPositionUpdates) { |
| mRtReleaseSurfaces = true; |
| return; |
| } |
| |
| releaseSurfaces(mTmpTransaction); |
| mTmpTransaction.apply(); |
| } |
| } |
| |
| private void releaseSurfaces(Transaction transaction) { |
| if (mSurfaceControl != null) { |
| transaction.remove(mSurfaceControl); |
| mSurfaceControl = null; |
| } |
| if (mBackgroundControl != null) { |
| transaction.remove(mBackgroundControl); |
| mBackgroundControl = null; |
| } |
| if (mBlastSurfaceControl != null) { |
| transaction.remove(mBlastSurfaceControl); |
| mBlastSurfaceControl = null; |
| } |
| } |
| |
| |
| // The position update listener is used to safely share the surface size between render thread |
| // workers and the UI thread. Both threads need to know the surface size to determine the scale. |
| // The parent layer scales the surface size to view size. The child (BBQ) layer scales |
| // the buffer to the surface size. Both scales along with the window crop must be applied |
| // synchronously otherwise we may see flickers. |
| // When the listener is updated, we will get at least a single position update call so we can |
| // guarantee any changes we post will be applied. |
| private void replacePositionUpdateListener(int surfaceWidth, int surfaceHeight, |
| @Nullable Transaction geometryTransaction) { |
| if (mPositionListener != null) { |
| mRenderNode.removePositionUpdateListener(mPositionListener); |
| } |
| mPositionListener = new SurfaceViewPositionUpdateListener(surfaceWidth, surfaceHeight, |
| geometryTransaction); |
| mRenderNode.addPositionUpdateListener(mPositionListener); |
| } |
| |
| private boolean performSurfaceTransaction(ViewRootImpl viewRoot, Translator translator, |
| boolean creating, boolean sizeChanged, boolean hintChanged) { |
| boolean realSizeChanged = false; |
| |
| mSurfaceLock.lock(); |
| try { |
| mDrawingStopped = !mVisible; |
| |
| if (DEBUG) Log.i(TAG, System.identityHashCode(this) + " " |
| + "Cur surface: " + mSurface); |
| |
| // If we are creating the surface control or the parent surface has not |
| // changed, then set relative z. Otherwise allow the parent |
| // SurfaceChangedCallback to update the relative z. This is needed so that |
| // we do not change the relative z before the server is ready to swap the |
| // parent surface. |
| if (creating || (mParentSurfaceSequenceId == viewRoot.getSurfaceSequenceId())) { |
| updateRelativeZ(mTmpTransaction); |
| } |
| mParentSurfaceSequenceId = viewRoot.getSurfaceSequenceId(); |
| |
| if (mViewVisibility) { |
| mTmpTransaction.show(mSurfaceControl); |
| } else { |
| mTmpTransaction.hide(mSurfaceControl); |
| } |
| |
| if (mSurfacePackage != null) { |
| reparentSurfacePackage(mTmpTransaction, mSurfacePackage); |
| } |
| |
| updateBackgroundVisibility(mTmpTransaction); |
| updateBackgroundColor(mTmpTransaction); |
| if (mUseAlpha) { |
| float alpha = getFixedAlpha(); |
| mTmpTransaction.setAlpha(mSurfaceControl, alpha); |
| mSurfaceAlpha = alpha; |
| } |
| |
| // While creating the surface, we will set it's initial |
| // geometry. Outside of that though, we should generally |
| // leave it to the RenderThread. |
| Transaction geometryTransaction = new Transaction(); |
| geometryTransaction.setCornerRadius(mSurfaceControl, mCornerRadius); |
| if ((sizeChanged || hintChanged) && !creating) { |
| setBufferSize(geometryTransaction); |
| } |
| if (sizeChanged || creating || !isHardwareAccelerated()) { |
| onSetSurfacePositionAndScaleRT(geometryTransaction, mSurfaceControl, |
| mScreenRect.left, /*positionLeft*/ |
| mScreenRect.top /*positionTop*/ , |
| mScreenRect.width() / (float) mSurfaceWidth /*postScaleX*/, |
| mScreenRect.height() / (float) mSurfaceHeight /*postScaleY*/); |
| |
| // Set a window crop when creating the surface or changing its size to |
| // crop the buffer to the surface size since the buffer producer may |
| // use SCALING_MODE_SCALE and submit a larger size than the surface |
| // size. |
| if (mClipSurfaceToBounds && mClipBounds != null) { |
| geometryTransaction.setWindowCrop(mSurfaceControl, mClipBounds); |
| } else { |
| geometryTransaction.setWindowCrop(mSurfaceControl, mSurfaceWidth, |
| mSurfaceHeight); |
| } |
| |
| boolean applyChangesOnRenderThread = |
| sizeChanged && !creating && isHardwareAccelerated(); |
| if (isHardwareAccelerated()) { |
| // This will consume the passed in transaction and the transaction will be |
| // applied on a render worker thread. |
| replacePositionUpdateListener(mSurfaceWidth, mSurfaceHeight, |
| applyChangesOnRenderThread ? geometryTransaction : null); |
| } |
| if (DEBUG_POSITION) { |
| Log.d(TAG, String.format( |
| "%d updateSurfacePosition %s" |
| + "position = [%d, %d, %d, %d] surfaceSize = %dx%d", |
| System.identityHashCode(this), |
| applyChangesOnRenderThread ? "RenderWorker" : "UiThread", |
| mScreenRect.left, mScreenRect.top, mScreenRect.right, |
| mScreenRect.bottom, mSurfaceWidth, mSurfaceHeight)); |
| } |
| } |
| mTmpTransaction.merge(geometryTransaction); |
| mTmpTransaction.apply(); |
| updateEmbeddedAccessibilityMatrix(); |
| |
| mSurfaceFrame.left = 0; |
| mSurfaceFrame.top = 0; |
| if (translator == null) { |
| mSurfaceFrame.right = mSurfaceWidth; |
| mSurfaceFrame.bottom = mSurfaceHeight; |
| } else { |
| float appInvertedScale = translator.applicationInvertedScale; |
| mSurfaceFrame.right = (int) (mSurfaceWidth * appInvertedScale + 0.5f); |
| mSurfaceFrame.bottom = (int) (mSurfaceHeight * appInvertedScale + 0.5f); |
| } |
| final int surfaceWidth = mSurfaceFrame.right; |
| final int surfaceHeight = mSurfaceFrame.bottom; |
| realSizeChanged = mLastSurfaceWidth != surfaceWidth |
| || mLastSurfaceHeight != surfaceHeight; |
| mLastSurfaceWidth = surfaceWidth; |
| mLastSurfaceHeight = surfaceHeight; |
| } finally { |
| mSurfaceLock.unlock(); |
| } |
| return realSizeChanged; |
| } |
| |
| /** @hide */ |
| protected void updateSurface() { |
| if (!mHaveFrame) { |
| if (DEBUG) { |
| Log.d(TAG, System.identityHashCode(this) + " updateSurface: has no frame"); |
| } |
| return; |
| } |
| final ViewRootImpl viewRoot = getViewRootImpl(); |
| |
| if (viewRoot == null) { |
| return; |
| } |
| |
| if (viewRoot.mSurface == null || !viewRoot.mSurface.isValid()) { |
| notifySurfaceDestroyed(); |
| tryReleaseSurfaces(); |
| return; |
| } |
| |
| final Translator translator = viewRoot.mTranslator; |
| if (translator != null) { |
| mSurface.setCompatibilityTranslator(translator); |
| } |
| |
| int myWidth = mRequestedWidth; |
| if (myWidth <= 0) myWidth = getWidth(); |
| int myHeight = mRequestedHeight; |
| if (myHeight <= 0) myHeight = getHeight(); |
| |
| final float alpha = getFixedAlpha(); |
| final boolean formatChanged = mFormat != mRequestedFormat; |
| final boolean visibleChanged = mVisible != mRequestedVisible; |
| final boolean alphaChanged = mSurfaceAlpha != alpha; |
| final boolean creating = (mSurfaceControl == null || formatChanged || visibleChanged) |
| && mRequestedVisible; |
| final boolean sizeChanged = mSurfaceWidth != myWidth || mSurfaceHeight != myHeight; |
| final boolean windowVisibleChanged = mWindowVisibility != mLastWindowVisibility; |
| getLocationInSurface(mLocation); |
| final boolean positionChanged = mWindowSpaceLeft != mLocation[0] |
| || mWindowSpaceTop != mLocation[1]; |
| final boolean layoutSizeChanged = getWidth() != mScreenRect.width() |
| || getHeight() != mScreenRect.height(); |
| final boolean hintChanged = (viewRoot.getSurfaceTransformHint() != mTransformHint) |
| && mRequestedVisible; |
| |
| if (creating || formatChanged || sizeChanged || visibleChanged || |
| (mUseAlpha && alphaChanged) || windowVisibleChanged || |
| positionChanged || layoutSizeChanged || hintChanged) { |
| getLocationInWindow(mLocation); |
| |
| if (DEBUG) Log.i(TAG, System.identityHashCode(this) + " " |
| + "Changes: creating=" + creating |
| + " format=" + formatChanged + " size=" + sizeChanged |
| + " visible=" + visibleChanged + " alpha=" + alphaChanged |
| + " hint=" + hintChanged |
| + " mUseAlpha=" + mUseAlpha |
| + " visible=" + visibleChanged |
| + " left=" + (mWindowSpaceLeft != mLocation[0]) |
| + " top=" + (mWindowSpaceTop != mLocation[1])); |
| |
| try { |
| mVisible = mRequestedVisible; |
| mWindowSpaceLeft = mLocation[0]; |
| mWindowSpaceTop = mLocation[1]; |
| mSurfaceWidth = myWidth; |
| mSurfaceHeight = myHeight; |
| mFormat = mRequestedFormat; |
| mLastWindowVisibility = mWindowVisibility; |
| mTransformHint = viewRoot.getSurfaceTransformHint(); |
| |
| mScreenRect.left = mWindowSpaceLeft; |
| mScreenRect.top = mWindowSpaceTop; |
| mScreenRect.right = mWindowSpaceLeft + getWidth(); |
| mScreenRect.bottom = mWindowSpaceTop + getHeight(); |
| if (translator != null) { |
| translator.translateRectInAppWindowToScreen(mScreenRect); |
| } |
| |
| final Rect surfaceInsets = viewRoot.mWindowAttributes.surfaceInsets; |
| mScreenRect.offset(surfaceInsets.left, surfaceInsets.top); |
| |
| if (creating) { |
| updateOpaqueFlag(); |
| final String name = "SurfaceView[" + viewRoot.getTitle().toString() + "]"; |
| if (mUseBlastAdapter) { |
| createBlastSurfaceControls(viewRoot, name); |
| } else { |
| mDeferredDestroySurfaceControl = createSurfaceControls(viewRoot, name); |
| } |
| } else if (mSurfaceControl == null) { |
| return; |
| } |
| |
| final boolean realSizeChanged = performSurfaceTransaction(viewRoot, |
| translator, creating, sizeChanged, hintChanged); |
| final boolean redrawNeeded = sizeChanged || creating || hintChanged |
| || (mVisible && !mDrawFinished); |
| |
| try { |
| SurfaceHolder.Callback[] callbacks = null; |
| |
| final boolean surfaceChanged = creating; |
| if (mSurfaceCreated && (surfaceChanged || (!mVisible && visibleChanged))) { |
| mSurfaceCreated = false; |
| notifySurfaceDestroyed(); |
| } |
| |
| copySurface(creating /* surfaceControlCreated */, sizeChanged); |
| |
| if (mVisible && mSurface.isValid()) { |
| if (!mSurfaceCreated && (surfaceChanged || visibleChanged)) { |
| mSurfaceCreated = true; |
| mIsCreating = true; |
| if (DEBUG) Log.i(TAG, System.identityHashCode(this) + " " |
| + "visibleChanged -- surfaceCreated"); |
| if (callbacks == null) { |
| callbacks = getSurfaceCallbacks(); |
| } |
| for (SurfaceHolder.Callback c : callbacks) { |
| c.surfaceCreated(mSurfaceHolder); |
| } |
| } |
| if (creating || formatChanged || sizeChanged || hintChanged |
| || visibleChanged || realSizeChanged) { |
| if (DEBUG) Log.i(TAG, System.identityHashCode(this) + " " |
| + "surfaceChanged -- format=" + mFormat |
| + " w=" + myWidth + " h=" + myHeight); |
| if (callbacks == null) { |
| callbacks = getSurfaceCallbacks(); |
| } |
| for (SurfaceHolder.Callback c : callbacks) { |
| c.surfaceChanged(mSurfaceHolder, mFormat, myWidth, myHeight); |
| } |
| } |
| if (redrawNeeded) { |
| if (DEBUG) Log.i(TAG, System.identityHashCode(this) + " " |
| + "surfaceRedrawNeeded"); |
| if (callbacks == null) { |
| callbacks = getSurfaceCallbacks(); |
| } |
| |
| mPendingReportDraws++; |
| viewRoot.drawPending(); |
| SurfaceCallbackHelper sch = |
| new SurfaceCallbackHelper(this::onDrawFinished); |
| sch.dispatchSurfaceRedrawNeededAsync(mSurfaceHolder, callbacks); |
| } |
| } |
| } finally { |
| mIsCreating = false; |
| if (mSurfaceControl != null && !mSurfaceCreated) { |
| tryReleaseSurfaces(); |
| } |
| } |
| } catch (Exception ex) { |
| Log.e(TAG, "Exception configuring surface", ex); |
| } |
| if (DEBUG) Log.v( |
| TAG, "Layout: x=" + mScreenRect.left + " y=" + mScreenRect.top |
| + " w=" + mScreenRect.width() + " h=" + mScreenRect.height() |
| + ", frame=" + mSurfaceFrame); |
| } |
| } |
| |
| /** |
| * Copy the Surface from the SurfaceControl or the blast adapter. |
| * |
| * @param surfaceControlCreated true if we created the SurfaceControl and need to update our |
| * Surface if needed. |
| * @param bufferSizeChanged true if the BufferSize has changed and we need to recreate the |
| * Surface for compatibility reasons. |
| */ |
| private void copySurface(boolean surfaceControlCreated, boolean bufferSizeChanged) { |
| if (surfaceControlCreated) { |
| if (mUseBlastAdapter) { |
| mSurface.copyFrom(mBlastBufferQueue); |
| } else { |
| mSurface.copyFrom(mSurfaceControl); |
| } |
| } |
| |
| if (bufferSizeChanged && getContext().getApplicationInfo().targetSdkVersion |
| < Build.VERSION_CODES.O) { |
| // Some legacy applications use the underlying native {@link Surface} object |
| // as a key to whether anything has changed. In these cases, updates to the |
| // existing {@link Surface} will be ignored when the size changes. |
| // Therefore, we must explicitly recreate the {@link Surface} in these |
| // cases. |
| if (mUseBlastAdapter) { |
| if (mBlastBufferQueue != null) { |
| mSurface.transferFrom(mBlastBufferQueue.createSurfaceWithHandle()); |
| } |
| } else { |
| mSurface.createFrom(mSurfaceControl); |
| } |
| } |
| } |
| |
| private void setBufferSize(Transaction transaction) { |
| if (mUseBlastAdapter) { |
| mBlastSurfaceControl.setTransformHint(mTransformHint); |
| if (mBlastBufferQueue != null) { |
| mBlastBufferQueue.update(mBlastSurfaceControl, mSurfaceWidth, mSurfaceHeight, |
| mFormat, transaction); |
| } |
| } else { |
| transaction.setBufferSize(mSurfaceControl, mSurfaceWidth, mSurfaceHeight); |
| } |
| } |
| |
| /** |
| * Creates the surface control hierarchy as follows |
| * ViewRootImpl surface |
| * bounds layer (crops all child surfaces to parent surface insets) |
| * * SurfaceView surface (drawn relative to ViewRootImpl surface) |
| * * Blast surface (if enabled) |
| * * Background color layer (drawn behind all SurfaceView surfaces) |
| * |
| * The bounds layer is used to crop the surface view so it does not draw into the parent |
| * surface inset region. Since there can be multiple surface views below or above the parent |
| * surface, one option is to create multiple bounds layer for each z order. The other option, |
| * the one implement is to create a single bounds layer and set z order for each child surface |
| * relative to the parent surface. |
| * When creating the surface view, we parent it to the bounds layer and then set the relative z |
| * order. When the parent surface changes, we have to make sure to update the relative z via |
| * ViewRootImpl.SurfaceChangedCallback. |
| * |
| * @return previous SurfaceControl where the content was rendered. In the surface is switched |
| * out, the old surface can be persevered until the new one has drawn by keeping the reference |
| * of the old SurfaceControl alive. |
| */ |
| private SurfaceControl createSurfaceControls(ViewRootImpl viewRoot, String name) { |
| final SurfaceControl previousSurfaceControl = mSurfaceControl; |
| mSurfaceControl = new SurfaceControl.Builder(mSurfaceSession) |
| .setName(name) |
| .setLocalOwnerView(this) |
| .setParent(viewRoot.getBoundsLayer()) |
| .setCallsite("SurfaceView.updateSurface") |
| .setBufferSize(mSurfaceWidth, mSurfaceHeight) |
| .setFlags(mSurfaceFlags) |
| .setFormat(mFormat) |
| .build(); |
| mBackgroundControl = createBackgroundControl(name); |
| return previousSurfaceControl; |
| } |
| |
| private SurfaceControl createBackgroundControl(String name) { |
| return new SurfaceControl.Builder(mSurfaceSession) |
| .setName("Background for " + name) |
| .setLocalOwnerView(this) |
| .setOpaque(true) |
| .setColorLayer() |
| .setParent(mSurfaceControl) |
| .setCallsite("SurfaceView.updateSurface") |
| .build(); |
| } |
| |
| // We don't recreate the surface controls but only recreate the adapter. Since the blast layer |
| // is still alive, the old buffers will continue to be presented until replaced by buffers from |
| // the new adapter. This means we do not need to track the old surface control and destroy it |
| // after the client has drawn to avoid any flickers. |
| private void createBlastSurfaceControls(ViewRootImpl viewRoot, String name) { |
| if (mSurfaceControl == null) { |
| mSurfaceControl = new SurfaceControl.Builder(mSurfaceSession) |
| .setName(name) |
| .setLocalOwnerView(this) |
| .setParent(viewRoot.getBoundsLayer()) |
| .setCallsite("SurfaceView.updateSurface") |
| .setContainerLayer() |
| .build(); |
| } |
| |
| if (mBlastSurfaceControl == null) { |
| mBlastSurfaceControl = new SurfaceControl.Builder(mSurfaceSession) |
| .setName(name + "(BLAST)") |
| .setLocalOwnerView(this) |
| .setParent(mSurfaceControl) |
| .setFlags(mSurfaceFlags) |
| .setHidden(false) |
| .setBLASTLayer() |
| .setCallsite("SurfaceView.updateSurface") |
| .build(); |
| } else { |
| // update blast layer |
| mTmpTransaction |
| .setOpaque(mBlastSurfaceControl, (mSurfaceFlags & SurfaceControl.OPAQUE) != 0) |
| .setSecure(mBlastSurfaceControl, (mSurfaceFlags & SurfaceControl.SECURE) != 0) |
| .show(mBlastSurfaceControl) |
| .apply(); |
| } |
| |
| if (mBackgroundControl == null) { |
| mBackgroundControl = createBackgroundControl(name); |
| } |
| |
| // Always recreate the IGBP for compatibility. This can be optimized in the future but |
| // the behavior change will need to be gated by SDK version. |
| if (mBlastBufferQueue != null) { |
| mBlastBufferQueue.destroy(); |
| } |
| mTransformHint = viewRoot.getSurfaceTransformHint(); |
| mBlastSurfaceControl.setTransformHint(mTransformHint); |
| mBlastBufferQueue = new BLASTBufferQueue(name, mBlastSurfaceControl, mSurfaceWidth, |
| mSurfaceHeight, mFormat); |
| } |
| |
| private void onDrawFinished() { |
| if (DEBUG) { |
| Log.i(TAG, System.identityHashCode(this) + " " |
| + "finishedDrawing"); |
| } |
| |
| runOnUiThread(this::performDrawFinished); |
| } |
| |
| /** |
| * A place to over-ride for applying child-surface transactions. |
| * These can be synchronized with the viewroot surface using deferTransaction. |
| * |
| * Called from RenderWorker while UI thread is paused. |
| * @hide |
| */ |
| protected void applyChildSurfaceTransaction_renderWorker(SurfaceControl.Transaction t, |
| Surface viewRootSurface, long nextViewRootFrameNumber) { |
| } |
| |
| /** |
| * Sets the surface position and scale. Can be called on |
| * the UI thread as well as on the renderer thread. |
| * |
| * @param transaction Transaction in which to execute. |
| * @param surface Surface whose location to set. |
| * @param positionLeft The left position to set. |
| * @param positionTop The top position to set. |
| * @param postScaleX The X axis post scale |
| * @param postScaleY The Y axis post scale |
| * |
| * @hide |
| */ |
| protected void onSetSurfacePositionAndScaleRT(@NonNull Transaction transaction, |
| @NonNull SurfaceControl surface, int positionLeft, int positionTop, |
| float postScaleX, float postScaleY) { |
| transaction.setPosition(surface, positionLeft, positionTop); |
| transaction.setMatrix(surface, postScaleX /*dsdx*/, 0f /*dtdx*/, |
| 0f /*dtdy*/, postScaleY /*dsdy*/); |
| } |
| |
| /** @hide */ |
| public void requestUpdateSurfacePositionAndScale() { |
| if (mSurfaceControl == null) { |
| return; |
| } |
| onSetSurfacePositionAndScaleRT(mTmpTransaction, mSurfaceControl, |
| mScreenRect.left, /*positionLeft*/ |
| mScreenRect.top/*positionTop*/ , |
| mScreenRect.width() / (float) mSurfaceWidth /*postScaleX*/, |
| mScreenRect.height() / (float) mSurfaceHeight /*postScaleY*/); |
| mTmpTransaction.apply(); |
| } |
| |
| /** |
| * @return The last render position of the backing surface or an empty rect. |
| * |
| * @hide |
| */ |
| public @NonNull Rect getSurfaceRenderPosition() { |
| return mRTLastReportedPosition; |
| } |
| |
| private void applyOrMergeTransaction(Transaction t, long frameNumber) { |
| final ViewRootImpl viewRoot = getViewRootImpl(); |
| boolean useBLAST = viewRoot != null && useBLASTSync(viewRoot); |
| if (useBLAST) { |
| // If we are using BLAST, merge the transaction with the viewroot buffer transaction. |
| viewRoot.mergeWithNextTransaction(t, frameNumber); |
| } else { |
| t.apply(); |
| } |
| } |
| |
| private Rect mRTLastReportedPosition = new Rect(); |
| private Point mRTLastReportedSurfaceSize = new Point(); |
| |
| private class SurfaceViewPositionUpdateListener implements RenderNode.PositionUpdateListener { |
| int mRtSurfaceWidth = -1; |
| int mRtSurfaceHeight = -1; |
| private final SurfaceControl.Transaction mPositionChangedTransaction = |
| new SurfaceControl.Transaction(); |
| boolean mPendingTransaction = false; |
| |
| SurfaceViewPositionUpdateListener(int surfaceWidth, int surfaceHeight, |
| @Nullable Transaction t) { |
| mRtSurfaceWidth = surfaceWidth; |
| mRtSurfaceHeight = surfaceHeight; |
| if (t != null) { |
| mPositionChangedTransaction.merge(t); |
| mPendingTransaction = true; |
| } |
| } |
| |
| @Override |
| public void positionChanged(long frameNumber, int left, int top, int right, int bottom) { |
| if (mSurfaceControl == null) { |
| return; |
| } |
| |
| // TODO: This is teensy bit racey in that a brand new SurfaceView moving on |
| // its 2nd frame if RenderThread is running slowly could potentially see |
| // this as false, enter the branch, get pre-empted, then this comes along |
| // and reports a new position, then the UI thread resumes and reports |
| // its position. This could therefore be de-sync'd in that interval, but |
| // the synchronization would violate the rule that RT must never block |
| // on the UI thread which would open up potential deadlocks. The risk of |
| // a single-frame desync is therefore preferable for now. |
| synchronized(mSurfaceControlLock) { |
| mRtHandlingPositionUpdates = true; |
| } |
| if (mRTLastReportedPosition.left == left |
| && mRTLastReportedPosition.top == top |
| && mRTLastReportedPosition.right == right |
| && mRTLastReportedPosition.bottom == bottom |
| && mRTLastReportedSurfaceSize.x == mRtSurfaceWidth |
| && mRTLastReportedSurfaceSize.y == mRtSurfaceHeight |
| && !mPendingTransaction) { |
| return; |
| } |
| try { |
| if (DEBUG_POSITION) { |
| Log.d(TAG, String.format( |
| "%d updateSurfacePosition RenderWorker, frameNr = %d, " |
| + "position = [%d, %d, %d, %d] surfaceSize = %dx%d", |
| System.identityHashCode(SurfaceView.this), frameNumber, |
| left, top, right, bottom, mRtSurfaceWidth, mRtSurfaceHeight)); |
| } |
| mRTLastReportedPosition.set(left, top, right, bottom); |
| mRTLastReportedSurfaceSize.set(mRtSurfaceWidth, mRtSurfaceHeight); |
| onSetSurfacePositionAndScaleRT(mPositionChangedTransaction, mSurfaceControl, |
| mRTLastReportedPosition.left /*positionLeft*/, |
| mRTLastReportedPosition.top /*positionTop*/, |
| mRTLastReportedPosition.width() / (float) mRtSurfaceWidth /*postScaleX*/, |
| mRTLastReportedPosition.height() / (float) mRtSurfaceHeight /*postScaleY*/); |
| if (mViewVisibility) { |
| mPositionChangedTransaction.show(mSurfaceControl); |
| } |
| applyChildSurfaceTransaction_renderWorker(mPositionChangedTransaction, |
| getViewRootImpl().mSurface, frameNumber); |
| applyOrMergeTransaction(mPositionChangedTransaction, frameNumber); |
| mPendingTransaction = false; |
| } catch (Exception ex) { |
| Log.e(TAG, "Exception from repositionChild", ex); |
| } |
| } |
| |
| @Override |
| public void applyStretch(long frameNumber, float width, float height, |
| float vecX, float vecY, float maxStretchX, float maxStretchY, |
| float childRelativeLeft, float childRelativeTop, float childRelativeRight, |
| float childRelativeBottom) { |
| mRtTransaction.setStretchEffect(mSurfaceControl, width, height, vecX, vecY, |
| maxStretchX, maxStretchY, childRelativeLeft, childRelativeTop, |
| childRelativeRight, childRelativeBottom); |
| applyOrMergeTransaction(mRtTransaction, frameNumber); |
| } |
| |
| @Override |
| public void positionLost(long frameNumber) { |
| if (DEBUG) { |
| Log.d(TAG, String.format("%d windowPositionLost, frameNr = %d", |
| System.identityHashCode(this), frameNumber)); |
| } |
| mRTLastReportedPosition.setEmpty(); |
| mRTLastReportedSurfaceSize.set(-1, -1); |
| if (mPendingTransaction) { |
| Log.w(TAG, System.identityHashCode(SurfaceView.this) |
| + "Pending transaction cleared."); |
| mPositionChangedTransaction.clear(); |
| mPendingTransaction = false; |
| } |
| if (mSurfaceControl == null) { |
| return; |
| } |
| |
| /** |
| * positionLost can be called while UI thread is un-paused so we |
| * need to hold the lock here. |
| */ |
| synchronized (mSurfaceControlLock) { |
| mRtTransaction.hide(mSurfaceControl); |
| if (mRtReleaseSurfaces) { |
| mRtReleaseSurfaces = false; |
| releaseSurfaces(mRtTransaction); |
| } |
| applyOrMergeTransaction(mRtTransaction, frameNumber); |
| mRtHandlingPositionUpdates = false; |
| } |
| } |
| } |
| |
| private SurfaceViewPositionUpdateListener mPositionListener = null; |
| |
| private SurfaceHolder.Callback[] getSurfaceCallbacks() { |
| SurfaceHolder.Callback[] callbacks; |
| synchronized (mCallbacks) { |
| callbacks = new SurfaceHolder.Callback[mCallbacks.size()]; |
| mCallbacks.toArray(callbacks); |
| } |
| return callbacks; |
| } |
| |
| private void runOnUiThread(Runnable runnable) { |
| Handler handler = getHandler(); |
| if (handler != null && handler.getLooper() != Looper.myLooper()) { |
| handler.post(runnable); |
| } else { |
| runnable.run(); |
| } |
| } |
| |
| /** |
| * Check to see if the surface has fixed size dimensions or if the surface's |
| * dimensions are dimensions are dependent on its current layout. |
| * |
| * @return true if the surface has dimensions that are fixed in size |
| * @hide |
| */ |
| @UnsupportedAppUsage |
| public boolean isFixedSize() { |
| return (mRequestedWidth != -1 || mRequestedHeight != -1); |
| } |
| |
| private boolean isAboveParent() { |
| return mSubLayer >= 0; |
| } |
| |
| /** |
| * Set an opaque background color to use with this {@link SurfaceView} when it's being resized |
| * and size of the content hasn't updated yet. This color will fill the expanded area when the |
| * view becomes larger. |
| * @param bgColor An opaque color to fill the background. Alpha component will be ignored. |
| * @hide |
| */ |
| public void setResizeBackgroundColor(int bgColor) { |
| if (mBackgroundControl == null) { |
| return; |
| } |
| |
| mBackgroundColor = bgColor; |
| updateBackgroundColor(mTmpTransaction).apply(); |
| } |
| |
| @UnsupportedAppUsage |
| private final SurfaceHolder mSurfaceHolder = new SurfaceHolder() { |
| private static final String LOG_TAG = "SurfaceHolder"; |
| |
| @Override |
| public boolean isCreating() { |
| return mIsCreating; |
| } |
| |
| @Override |
| public void addCallback(Callback callback) { |
| synchronized (mCallbacks) { |
| // This is a linear search, but in practice we'll |
| // have only a couple callbacks, so it doesn't matter. |
| if (!mCallbacks.contains(callback)) { |
| mCallbacks.add(callback); |
| } |
| } |
| } |
| |
| @Override |
| public void removeCallback(Callback callback) { |
| synchronized (mCallbacks) { |
| mCallbacks.remove(callback); |
| } |
| } |
| |
| @Override |
| public void setFixedSize(int width, int height) { |
| if (mRequestedWidth != width || mRequestedHeight != height) { |
| mRequestedWidth = width; |
| mRequestedHeight = height; |
| requestLayout(); |
| } |
| } |
| |
| @Override |
| public void setSizeFromLayout() { |
| if (mRequestedWidth != -1 || mRequestedHeight != -1) { |
| mRequestedWidth = mRequestedHeight = -1; |
| requestLayout(); |
| } |
| } |
| |
| @Override |
| public void setFormat(int format) { |
| // for backward compatibility reason, OPAQUE always |
| // means 565 for SurfaceView |
| if (format == PixelFormat.OPAQUE) |
| format = PixelFormat.RGB_565; |
| |
| mRequestedFormat = format; |
| if (mSurfaceControl != null) { |
| updateSurface(); |
| } |
| } |
| |
| /** |
| * @deprecated setType is now ignored. |
| */ |
| @Override |
| @Deprecated |
| public void setType(int type) { } |
| |
| @Override |
| public void setKeepScreenOn(boolean screenOn) { |
| runOnUiThread(() -> SurfaceView.this.setKeepScreenOn(screenOn)); |
| } |
| |
| /** |
| * Gets a {@link Canvas} for drawing into the SurfaceView's Surface |
| * |
| * After drawing into the provided {@link Canvas}, the caller must |
| * invoke {@link #unlockCanvasAndPost} to post the new contents to the surface. |
| * |
| * The caller must redraw the entire surface. |
| * @return A canvas for drawing into the surface. |
| */ |
| @Override |
| public Canvas lockCanvas() { |
| return internalLockCanvas(null, false); |
| } |
| |
| /** |
| * Gets a {@link Canvas} for drawing into the SurfaceView's Surface |
| * |
| * After drawing into the provided {@link Canvas}, the caller must |
| * invoke {@link #unlockCanvasAndPost} to post the new contents to the surface. |
| * |
| * @param inOutDirty A rectangle that represents the dirty region that the caller wants |
| * to redraw. This function may choose to expand the dirty rectangle if for example |
| * the surface has been resized or if the previous contents of the surface were |
| * not available. The caller must redraw the entire dirty region as represented |
| * by the contents of the inOutDirty rectangle upon return from this function. |
| * The caller may also pass <code>null</code> instead, in the case where the |
| * entire surface should be redrawn. |
| * @return A canvas for drawing into the surface. |
| */ |
| @Override |
| public Canvas lockCanvas(Rect inOutDirty) { |
| return internalLockCanvas(inOutDirty, false); |
| } |
| |
| @Override |
| public Canvas lockHardwareCanvas() { |
| return internalLockCanvas(null, true); |
| } |
| |
| private Canvas internalLockCanvas(Rect dirty, boolean hardware) { |
| mSurfaceLock.lock(); |
| |
| if (DEBUG) Log.i(TAG, System.identityHashCode(this) + " " + "Locking canvas... stopped=" |
| + mDrawingStopped + ", surfaceControl=" + mSurfaceControl); |
| |
| Canvas c = null; |
| if (!mDrawingStopped && mSurfaceControl != null) { |
| try { |
| if (hardware) { |
| c = mSurface.lockHardwareCanvas(); |
| } else { |
| c = mSurface.lockCanvas(dirty); |
| } |
| } catch (Exception e) { |
| Log.e(LOG_TAG, "Exception locking surface", e); |
| } |
| } |
| |
| if (DEBUG) Log.i(TAG, System.identityHashCode(this) + " " + "Returned canvas: " + c); |
| if (c != null) { |
| mLastLockTime = SystemClock.uptimeMillis(); |
| return c; |
| } |
| |
| // If the Surface is not ready to be drawn, then return null, |
| // but throttle calls to this function so it isn't called more |
| // than every 100ms. |
| long now = SystemClock.uptimeMillis(); |
| long nextTime = mLastLockTime + 100; |
| if (nextTime > now) { |
| try { |
| Thread.sleep(nextTime-now); |
| } catch (InterruptedException e) { |
| } |
| now = SystemClock.uptimeMillis(); |
| } |
| mLastLockTime = now; |
| mSurfaceLock.unlock(); |
| |
| return null; |
| } |
| |
| /** |
| * Posts the new contents of the {@link Canvas} to the surface and |
| * releases the {@link Canvas}. |
| * |
| * @param canvas The canvas previously obtained from {@link #lockCanvas}. |
| */ |
| @Override |
| public void unlockCanvasAndPost(Canvas canvas) { |
| mSurface.unlockCanvasAndPost(canvas); |
| mSurfaceLock.unlock(); |
| } |
| |
| @Override |
| public Surface getSurface() { |
| return mSurface; |
| } |
| |
| @Override |
| public Rect getSurfaceFrame() { |
| return mSurfaceFrame; |
| } |
| }; |
| |
| /** |
| * Return a SurfaceControl which can be used for parenting Surfaces to |
| * this SurfaceView. |
| * |
| * @return The SurfaceControl for this SurfaceView. |
| */ |
| public SurfaceControl getSurfaceControl() { |
| return mSurfaceControl; |
| } |
| |
| /** |
| * A token used for constructing {@link SurfaceControlViewHost}. This token should |
| * be passed from the host process to the client process. |
| * |
| * @return The token |
| */ |
| public @Nullable IBinder getHostToken() { |
| final ViewRootImpl viewRoot = getViewRootImpl(); |
| if (viewRoot == null) { |
| return null; |
| } |
| return viewRoot.getInputToken(); |
| } |
| |
| /** |
| * Set window stopped to false and update surface visibility when ViewRootImpl surface is |
| * created. |
| * @hide |
| */ |
| @Override |
| public void surfaceCreated(SurfaceControl.Transaction t) { |
| setWindowStopped(false); |
| } |
| |
| /** |
| * Set window stopped to true and update surface visibility when ViewRootImpl surface is |
| * destroyed. |
| * @hide |
| */ |
| @Override |
| public void surfaceDestroyed() { |
| setWindowStopped(true); |
| mRemoteAccessibilityController.disassosciateHierarchy(); |
| } |
| |
| /** |
| * Called when a valid ViewRootImpl surface is replaced by another valid surface. In this |
| * case update relative z to the new parent surface. |
| * @hide |
| */ |
| @Override |
| public void surfaceReplaced(Transaction t) { |
| if (mSurfaceControl != null && mBackgroundControl != null) { |
| updateRelativeZ(t); |
| } |
| } |
| |
| private void updateRelativeZ(Transaction t) { |
| final ViewRootImpl viewRoot = getViewRootImpl(); |
| if (viewRoot == null) { |
| // We were just detached. |
| return; |
| } |
| final SurfaceControl viewRootControl = viewRoot.getSurfaceControl(); |
| t.setRelativeLayer(mBackgroundControl, viewRootControl, Integer.MIN_VALUE); |
| t.setRelativeLayer(mSurfaceControl, viewRootControl, mSubLayer); |
| } |
| |
| /** |
| * Display the view-hierarchy embedded within a {@link SurfaceControlViewHost.SurfacePackage} |
| * within this SurfaceView. |
| * |
| * This can be called independently of the SurfaceView lifetime callbacks. SurfaceView |
| * will internally manage reparenting the package to our Surface as it is created |
| * and destroyed. |
| * |
| * If this SurfaceView is above its host Surface (see |
| * {@link #setZOrderOnTop} then the embedded Surface hierarchy will be able to receive |
| * input. |
| * |
| * This will take ownership of the SurfaceControl contained inside the SurfacePackage |
| * and free the caller of the obligation to call |
| * {@link SurfaceControlViewHost.SurfacePackage#release}. However, note that |
| * {@link SurfaceControlViewHost.SurfacePackage#release} and |
| * {@link SurfaceControlViewHost#release} are not the same. While the ownership |
| * of this particular {@link SurfaceControlViewHost.SurfacePackage} will be taken by the |
| * SurfaceView the underlying {@link SurfaceControlViewHost} remains managed by it's original |
| * remote-owner. |
| * |
| * @param p The SurfacePackage to embed. |
| */ |
| public void setChildSurfacePackage(@NonNull SurfaceControlViewHost.SurfacePackage p) { |
| final SurfaceControl lastSc = mSurfacePackage != null ? |
| mSurfacePackage.getSurfaceControl() : null; |
| if (mSurfaceControl != null && lastSc != null) { |
| mTmpTransaction.reparent(lastSc, null).apply(); |
| mSurfacePackage.release(); |
| } else if (mSurfaceControl != null) { |
| reparentSurfacePackage(mTmpTransaction, p); |
| mTmpTransaction.apply(); |
| } |
| mSurfacePackage = p; |
| } |
| |
| private void reparentSurfacePackage(SurfaceControl.Transaction t, |
| SurfaceControlViewHost.SurfacePackage p) { |
| final SurfaceControl sc = p.getSurfaceControl(); |
| if (sc == null || !sc.isValid()) { |
| return; |
| } |
| initEmbeddedHierarchyForAccessibility(p); |
| final SurfaceControl parent; |
| if (mUseBlastAdapter) { |
| parent = mBlastSurfaceControl; |
| } else { |
| parent = mSurfaceControl; |
| } |
| |
| t.reparent(sc, parent).show(sc); |
| } |
| |
| /** @hide */ |
| @Override |
| public void onInitializeAccessibilityNodeInfoInternal(AccessibilityNodeInfo info) { |
| super.onInitializeAccessibilityNodeInfoInternal(info); |
| if (!mRemoteAccessibilityController.connected()) { |
| return; |
| } |
| // Add a leashed child when this SurfaceView embeds another view hierarchy. Getting this |
| // leashed child would return the root node in the embedded hierarchy |
| info.addChild(mRemoteAccessibilityController.getLeashToken()); |
| } |
| |
| @Override |
| public int getImportantForAccessibility() { |
| final int mode = super.getImportantForAccessibility(); |
| // If developers explicitly set the important mode for it, don't change the mode. |
| // Only change the mode to important when this SurfaceView isn't explicitly set and has |
| // an embedded hierarchy. |
| if ((mRemoteAccessibilityController!= null && !mRemoteAccessibilityController.connected()) |
| || mode != IMPORTANT_FOR_ACCESSIBILITY_AUTO) { |
| return mode; |
| } |
| return IMPORTANT_FOR_ACCESSIBILITY_YES; |
| } |
| |
| private void initEmbeddedHierarchyForAccessibility(SurfaceControlViewHost.SurfacePackage p) { |
| final IAccessibilityEmbeddedConnection connection = p.getAccessibilityEmbeddedConnection(); |
| if (mRemoteAccessibilityController.alreadyAssociated(connection)) { |
| return; |
| } |
| mRemoteAccessibilityController.assosciateHierarchy(connection, |
| getViewRootImpl().mLeashToken, getAccessibilityViewId()); |
| |
| updateEmbeddedAccessibilityMatrix(); |
| } |
| |
| private void notifySurfaceDestroyed() { |
| if (mSurface.isValid()) { |
| if (DEBUG) Log.i(TAG, System.identityHashCode(this) + " " |
| + "surfaceDestroyed"); |
| SurfaceHolder.Callback[] callbacks = getSurfaceCallbacks(); |
| for (SurfaceHolder.Callback c : callbacks) { |
| c.surfaceDestroyed(mSurfaceHolder); |
| } |
| // Since Android N the same surface may be reused and given to us |
| // again by the system server at a later point. However |
| // as we didn't do this in previous releases, clients weren't |
| // necessarily required to clean up properly in |
| // surfaceDestroyed. This leads to problems for example when |
| // clients don't destroy their EGL context, and try |
| // and create a new one on the same surface following reuse. |
| // Since there is no valid use of the surface in-between |
| // surfaceDestroyed and surfaceCreated, we force a disconnect, |
| // so the next connect will always work if we end up reusing |
| // the surface. |
| if (mSurface.isValid()) { |
| mSurface.forceScopedDisconnect(); |
| } |
| } |
| } |
| |
| void updateEmbeddedAccessibilityMatrix() { |
| if (!mRemoteAccessibilityController.connected()) { |
| return; |
| } |
| getBoundsOnScreen(mTmpRect); |
| mTmpMatrix.reset(); |
| mTmpMatrix.setTranslate(mTmpRect.left, mTmpRect.top); |
| mTmpMatrix.postScale(mScreenRect.width() / (float) mSurfaceWidth, |
| mScreenRect.height() / (float) mSurfaceHeight); |
| mRemoteAccessibilityController.setScreenMatrix(mTmpMatrix); |
| } |
| |
| @Override |
| protected void onFocusChanged(boolean gainFocus, @FocusDirection int direction, |
| @Nullable Rect previouslyFocusedRect) { |
| super.onFocusChanged(gainFocus, direction, previouslyFocusedRect); |
| final ViewRootImpl viewRoot = getViewRootImpl(); |
| if (mSurfacePackage == null || viewRoot == null) { |
| return; |
| } |
| try { |
| viewRoot.mWindowSession.grantEmbeddedWindowFocus(viewRoot.mWindow, |
| mSurfacePackage.getInputToken(), gainFocus); |
| } catch (Exception e) { |
| Log.e(TAG, System.identityHashCode(this) |
| + "Exception requesting focus on embedded window", e); |
| } |
| } |
| |
| private boolean useBLASTSync(ViewRootImpl viewRoot) { |
| return viewRoot.useBLAST() && mUseBlastAdapter && mUseBlastSync; |
| } |
| } |
