| /* |
| * Copyright (C) 2020 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.screenshot; |
| |
| import android.content.pm.ActivityInfo; |
| import android.graphics.Canvas; |
| import android.graphics.Color; |
| import android.graphics.HardwareRenderer; |
| import android.graphics.Paint; |
| import android.graphics.RecordingCanvas; |
| import android.graphics.Rect; |
| import android.graphics.RenderNode; |
| import android.os.CancellationSignal; |
| import android.os.ICancellationSignal; |
| import android.os.RemoteException; |
| import android.view.IScrollCaptureCallbacks; |
| import android.view.IScrollCaptureConnection; |
| import android.view.Surface; |
| |
| /** |
| * An IScrollCaptureConnection which returns a sequence of solid filled rectangles in the |
| * locations requested, in alternating colors. |
| */ |
| class FakeScrollCaptureConnection extends IScrollCaptureConnection.Stub { |
| private final int[] mColors = {Color.RED, Color.GREEN, Color.BLUE}; |
| private IScrollCaptureCallbacks mCallbacks; |
| private Paint mPaint; |
| private int mNextColor; |
| private HwuiContext mHwuiContext; |
| private CancellationSignal mCancellationSignal; |
| |
| @Override |
| public ICancellationSignal startCapture(Surface surface, IScrollCaptureCallbacks callbacks) { |
| mCallbacks = callbacks; |
| mHwuiContext = new HwuiContext(surface); |
| mPaint = new Paint(Paint.ANTI_ALIAS_FLAG); |
| mPaint.setStyle(Paint.Style.FILL); |
| try { |
| mCallbacks.onCaptureStarted(); |
| } catch (RemoteException e) { |
| e.rethrowAsRuntimeException(); |
| } |
| ICancellationSignal signal = CancellationSignal.createTransport(); |
| mCancellationSignal = CancellationSignal.fromTransport(signal); |
| return signal; |
| } |
| |
| @Override |
| public ICancellationSignal requestImage(Rect rect) { |
| Canvas canvas = mHwuiContext.lockCanvas(rect.width(), rect.height()); |
| mPaint.setColor(mColors[mNextColor]); |
| canvas.drawRect(rect, mPaint); |
| mNextColor = (mNextColor++) % mColors.length; |
| mHwuiContext.unlockAndPost(canvas); |
| try { |
| mCallbacks.onImageRequestCompleted(0, rect); |
| } catch (RemoteException e) { |
| e.rethrowAsRuntimeException(); |
| } |
| ICancellationSignal signal = CancellationSignal.createTransport(); |
| mCancellationSignal = CancellationSignal.fromTransport(signal); |
| return signal; |
| } |
| |
| @Override |
| public ICancellationSignal endCapture() { |
| try { |
| mCallbacks.onCaptureEnded(); |
| } catch (RemoteException e) { |
| e.rethrowAsRuntimeException(); |
| } finally { |
| mHwuiContext.destroy(); |
| mCallbacks = null; |
| } |
| ICancellationSignal signal = CancellationSignal.createTransport(); |
| mCancellationSignal = CancellationSignal.fromTransport(signal); |
| return signal; |
| } |
| |
| @Override |
| public void close() throws RemoteException { |
| } |
| |
| // From android.view.Surface, but issues render requests synchronously with waitForPresent(true) |
| private static final class HwuiContext { |
| private final RenderNode mRenderNode; |
| private final HardwareRenderer mHardwareRenderer; |
| private RecordingCanvas mCanvas; |
| |
| HwuiContext(Surface surface) { |
| mRenderNode = RenderNode.create("HwuiCanvas", null); |
| mRenderNode.setClipToBounds(false); |
| mRenderNode.setForceDarkAllowed(false); |
| |
| mHardwareRenderer = new HardwareRenderer(); |
| mHardwareRenderer.setContentRoot(mRenderNode); |
| mHardwareRenderer.setSurface(surface, true); |
| mHardwareRenderer.setColorMode(ActivityInfo.COLOR_MODE_DEFAULT); |
| mHardwareRenderer.setLightSourceAlpha(0.0f, 0.0f); |
| mHardwareRenderer.setLightSourceGeometry(0.0f, 0.0f, 0.0f, 0.0f); |
| } |
| |
| Canvas lockCanvas(int width, int height) { |
| if (mCanvas != null) { |
| throw new IllegalStateException("Surface was already locked!"); |
| } |
| mCanvas = mRenderNode.beginRecording(width, height); |
| return mCanvas; |
| } |
| |
| void unlockAndPost(Canvas canvas) { |
| if (canvas != mCanvas) { |
| throw new IllegalArgumentException("canvas object must be the same instance that " |
| + "was previously returned by lockCanvas"); |
| } |
| mRenderNode.endRecording(); |
| mCanvas = null; |
| mHardwareRenderer.createRenderRequest() |
| .setVsyncTime(System.nanoTime()) |
| .setWaitForPresent(true) // sync! |
| .syncAndDraw(); |
| } |
| |
| void destroy() { |
| mHardwareRenderer.destroy(); |
| } |
| } |
| } |