| /* |
| * Copyright (C) 2018 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 com.android.systemui.shared.system; |
| |
| import android.graphics.HardwareRenderer; |
| import android.graphics.Matrix; |
| import android.graphics.Rect; |
| import android.os.Handler; |
| import android.os.Handler.Callback; |
| import android.os.Message; |
| import android.os.Trace; |
| import android.view.Surface; |
| import android.view.SurfaceControl; |
| import android.view.View; |
| import android.view.ViewRootImpl; |
| |
| import java.util.function.Consumer; |
| |
| /** |
| * Helper class to apply surface transactions in sync with RenderThread. |
| * |
| * NOTE: This is a modification of {@link android.view.SyncRtSurfaceTransactionApplier}, we can't |
| * currently reference that class from the shared lib as it is hidden. |
| */ |
| public class SyncRtSurfaceTransactionApplierCompat { |
| |
| public static final int FLAG_ALL = 0xffffffff; |
| public static final int FLAG_ALPHA = 1; |
| public static final int FLAG_MATRIX = 1 << 1; |
| public static final int FLAG_WINDOW_CROP = 1 << 2; |
| public static final int FLAG_LAYER = 1 << 3; |
| public static final int FLAG_CORNER_RADIUS = 1 << 4; |
| public static final int FLAG_BACKGROUND_BLUR_RADIUS = 1 << 5; |
| public static final int FLAG_VISIBILITY = 1 << 6; |
| |
| private static final int MSG_UPDATE_SEQUENCE_NUMBER = 0; |
| |
| private final SurfaceControl mBarrierSurfaceControl; |
| private final ViewRootImpl mTargetViewRootImpl; |
| private final Handler mApplyHandler; |
| |
| private int mSequenceNumber = 0; |
| private int mPendingSequenceNumber = 0; |
| private Runnable mAfterApplyCallback; |
| |
| /** |
| * @param targetView The view in the surface that acts as synchronization anchor. |
| */ |
| public SyncRtSurfaceTransactionApplierCompat(View targetView) { |
| mTargetViewRootImpl = targetView != null ? targetView.getViewRootImpl() : null; |
| mBarrierSurfaceControl = mTargetViewRootImpl != null |
| ? mTargetViewRootImpl.getRenderSurfaceControl() : null; |
| |
| mApplyHandler = new Handler(new Callback() { |
| @Override |
| public boolean handleMessage(Message msg) { |
| if (msg.what == MSG_UPDATE_SEQUENCE_NUMBER) { |
| onApplyMessage(msg.arg1); |
| return true; |
| } |
| return false; |
| } |
| }); |
| } |
| |
| private void onApplyMessage(int seqNo) { |
| mSequenceNumber = seqNo; |
| if (mSequenceNumber == mPendingSequenceNumber && mAfterApplyCallback != null) { |
| Runnable r = mAfterApplyCallback; |
| mAfterApplyCallback = null; |
| r.run(); |
| } |
| } |
| |
| /** |
| * Schedules applying surface parameters on the next frame. |
| * |
| * @param params The surface parameters to apply. DO NOT MODIFY the list after passing into |
| * this method to avoid synchronization issues. |
| */ |
| public void scheduleApply(final SyncRtSurfaceTransactionApplierCompat.SurfaceParams... params) { |
| if (mTargetViewRootImpl == null || mTargetViewRootImpl.getView() == null) { |
| return; |
| } |
| |
| mPendingSequenceNumber++; |
| final int toApplySeqNo = mPendingSequenceNumber; |
| mTargetViewRootImpl.registerRtFrameCallback(new HardwareRenderer.FrameDrawingCallback() { |
| @Override |
| public void onFrameDraw(long frame) { |
| if (mBarrierSurfaceControl == null || !mBarrierSurfaceControl.isValid()) { |
| Message.obtain(mApplyHandler, MSG_UPDATE_SEQUENCE_NUMBER, toApplySeqNo, 0) |
| .sendToTarget(); |
| return; |
| } |
| Trace.traceBegin(Trace.TRACE_TAG_VIEW, "Sync transaction frameNumber=" + frame); |
| TransactionCompat t = new TransactionCompat(); |
| for (int i = params.length - 1; i >= 0; i--) { |
| SyncRtSurfaceTransactionApplierCompat.SurfaceParams surfaceParams = |
| params[i]; |
| SurfaceControlCompat surface = surfaceParams.surface; |
| t.deferTransactionUntil(surface, mBarrierSurfaceControl, frame); |
| applyParams(t, surfaceParams); |
| } |
| t.setEarlyWakeup(); |
| t.apply(); |
| Trace.traceEnd(Trace.TRACE_TAG_VIEW); |
| Message.obtain(mApplyHandler, MSG_UPDATE_SEQUENCE_NUMBER, toApplySeqNo, 0) |
| .sendToTarget(); |
| } |
| }); |
| |
| // Make sure a frame gets scheduled. |
| mTargetViewRootImpl.getView().invalidate(); |
| } |
| |
| /** |
| * Calls the runnable when any pending apply calls have completed |
| */ |
| public void addAfterApplyCallback(final Runnable afterApplyCallback) { |
| if (mSequenceNumber == mPendingSequenceNumber) { |
| afterApplyCallback.run(); |
| } else { |
| if (mAfterApplyCallback == null) { |
| mAfterApplyCallback = afterApplyCallback; |
| } else { |
| final Runnable oldCallback = mAfterApplyCallback; |
| mAfterApplyCallback = new Runnable() { |
| @Override |
| public void run() { |
| afterApplyCallback.run(); |
| oldCallback.run(); |
| } |
| }; |
| } |
| } |
| } |
| |
| public static void applyParams(TransactionCompat t, |
| SyncRtSurfaceTransactionApplierCompat.SurfaceParams params) { |
| if ((params.flags & FLAG_MATRIX) != 0) { |
| t.setMatrix(params.surface, params.matrix); |
| } |
| if ((params.flags & FLAG_WINDOW_CROP) != 0) { |
| t.setWindowCrop(params.surface, params.windowCrop); |
| } |
| if ((params.flags & FLAG_ALPHA) != 0) { |
| t.setAlpha(params.surface, params.alpha); |
| } |
| if ((params.flags & FLAG_LAYER) != 0) { |
| t.setLayer(params.surface, params.layer); |
| } |
| if ((params.flags & FLAG_CORNER_RADIUS) != 0) { |
| t.setCornerRadius(params.surface, params.cornerRadius); |
| } |
| if ((params.flags & FLAG_BACKGROUND_BLUR_RADIUS) != 0) { |
| t.setBackgroundBlurRadius(params.surface, params.backgroundBlurRadius); |
| } |
| if ((params.flags & FLAG_VISIBILITY) != 0) { |
| if (params.visible) { |
| t.show(params.surface); |
| } else { |
| t.hide(params.surface); |
| } |
| } |
| } |
| |
| /** |
| * Creates an instance of SyncRtSurfaceTransactionApplier, deferring until the target view is |
| * attached if necessary. |
| */ |
| public static void create(final View targetView, |
| final Consumer<SyncRtSurfaceTransactionApplierCompat> callback) { |
| if (targetView == null) { |
| // No target view, no applier |
| callback.accept(null); |
| } else if (targetView.getViewRootImpl() != null) { |
| // Already attached, we're good to go |
| callback.accept(new SyncRtSurfaceTransactionApplierCompat(targetView)); |
| } else { |
| // Haven't been attached before we can get the view root |
| targetView.addOnAttachStateChangeListener(new View.OnAttachStateChangeListener() { |
| @Override |
| public void onViewAttachedToWindow(View v) { |
| targetView.removeOnAttachStateChangeListener(this); |
| callback.accept(new SyncRtSurfaceTransactionApplierCompat(targetView)); |
| } |
| |
| @Override |
| public void onViewDetachedFromWindow(View v) { |
| // Do nothing |
| } |
| }); |
| } |
| } |
| |
| public static class SurfaceParams { |
| public static class Builder { |
| final SurfaceControlCompat surface; |
| int flags; |
| float alpha; |
| float cornerRadius; |
| int backgroundBlurRadius; |
| Matrix matrix; |
| Rect windowCrop; |
| int layer; |
| boolean visible; |
| |
| /** |
| * @param surface The surface to modify. |
| */ |
| public Builder(SurfaceControlCompat surface) { |
| this.surface = surface; |
| } |
| |
| /** |
| * @param alpha The alpha value to apply to the surface. |
| * @return this Builder |
| */ |
| public Builder withAlpha(float alpha) { |
| this.alpha = alpha; |
| flags |= FLAG_ALPHA; |
| return this; |
| } |
| |
| /** |
| * @param matrix The matrix to apply to the surface. |
| * @return this Builder |
| */ |
| public Builder withMatrix(Matrix matrix) { |
| this.matrix = matrix; |
| flags |= FLAG_MATRIX; |
| return this; |
| } |
| |
| /** |
| * @param windowCrop The window crop to apply to the surface. |
| * @return this Builder |
| */ |
| public Builder withWindowCrop(Rect windowCrop) { |
| this.windowCrop = windowCrop; |
| flags |= FLAG_WINDOW_CROP; |
| return this; |
| } |
| |
| /** |
| * @param layer The layer to assign the surface. |
| * @return this Builder |
| */ |
| public Builder withLayer(int layer) { |
| this.layer = layer; |
| flags |= FLAG_LAYER; |
| return this; |
| } |
| |
| /** |
| * @param radius the Radius for rounded corners to apply to the surface. |
| * @return this Builder |
| */ |
| public Builder withCornerRadius(float radius) { |
| this.cornerRadius = radius; |
| flags |= FLAG_CORNER_RADIUS; |
| return this; |
| } |
| |
| /** |
| * @param radius the Radius for blur to apply to the background surfaces. |
| * @return this Builder |
| */ |
| public Builder withBackgroundBlur(int radius) { |
| this.backgroundBlurRadius = radius; |
| flags |= FLAG_BACKGROUND_BLUR_RADIUS; |
| return this; |
| } |
| |
| /** |
| * @param visible The visibility to apply to the surface. |
| * @return this Builder |
| */ |
| public Builder withVisibility(boolean visible) { |
| this.visible = visible; |
| flags |= FLAG_VISIBILITY; |
| return this; |
| } |
| |
| /** |
| * @return a new SurfaceParams instance |
| */ |
| public SurfaceParams build() { |
| return new SurfaceParams(surface, flags, alpha, matrix, windowCrop, layer, |
| cornerRadius, backgroundBlurRadius, visible); |
| } |
| } |
| |
| /** |
| * Constructs surface parameters to be applied when the current view state gets pushed to |
| * RenderThread. |
| * |
| * @param surface The surface to modify. |
| * @param alpha Alpha to apply. |
| * @param matrix Matrix to apply. |
| * @param windowCrop Crop to apply, only applied if not {@code null} |
| */ |
| public SurfaceParams(SurfaceControlCompat surface, float alpha, Matrix matrix, |
| Rect windowCrop, int layer, float cornerRadius) { |
| this(surface, FLAG_ALL & ~(FLAG_VISIBILITY | FLAG_BACKGROUND_BLUR_RADIUS), alpha, |
| matrix, windowCrop, layer, cornerRadius, 0 /* backgroundBlurRadius */, true); |
| } |
| |
| private SurfaceParams(SurfaceControlCompat surface, int flags, float alpha, Matrix matrix, |
| Rect windowCrop, int layer, float cornerRadius, int backgroundBlurRadius, |
| boolean visible) { |
| this.flags = flags; |
| this.surface = surface; |
| this.alpha = alpha; |
| this.matrix = new Matrix(matrix); |
| this.windowCrop = windowCrop != null ? new Rect(windowCrop) : null; |
| this.layer = layer; |
| this.cornerRadius = cornerRadius; |
| this.backgroundBlurRadius = backgroundBlurRadius; |
| this.visible = visible; |
| } |
| |
| private final int flags; |
| |
| public final SurfaceControlCompat surface; |
| public final float alpha; |
| public final float cornerRadius; |
| public final int backgroundBlurRadius; |
| public final Matrix matrix; |
| public final Rect windowCrop; |
| public final int layer; |
| public final boolean visible; |
| } |
| } |