| /* |
| * Copyright (C) 2023 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.appclips; |
| |
| import static android.content.Intent.CAPTURE_CONTENT_FOR_NOTE_FAILED; |
| |
| import android.content.Intent; |
| import android.graphics.Bitmap; |
| import android.graphics.HardwareRenderer; |
| import android.graphics.RecordingCanvas; |
| import android.graphics.Rect; |
| import android.graphics.RenderNode; |
| import android.graphics.drawable.Drawable; |
| import android.net.Uri; |
| import android.os.UserHandle; |
| |
| import androidx.annotation.NonNull; |
| import androidx.lifecycle.LiveData; |
| import androidx.lifecycle.MutableLiveData; |
| import androidx.lifecycle.ViewModel; |
| import androidx.lifecycle.ViewModelProvider; |
| |
| import com.android.systemui.dagger.qualifiers.Background; |
| import com.android.systemui.dagger.qualifiers.Main; |
| import com.android.systemui.screenshot.ImageExporter; |
| |
| import com.google.common.util.concurrent.ListenableFuture; |
| |
| import java.util.UUID; |
| import java.util.concurrent.CancellationException; |
| import java.util.concurrent.ExecutionException; |
| import java.util.concurrent.Executor; |
| |
| import javax.inject.Inject; |
| |
| /** A {@link ViewModel} to help with the App Clips screenshot flow. */ |
| final class AppClipsViewModel extends ViewModel { |
| |
| private final AppClipsCrossProcessHelper mAppClipsCrossProcessHelper; |
| private final ImageExporter mImageExporter; |
| @Main |
| private final Executor mMainExecutor; |
| @Background |
| private final Executor mBgExecutor; |
| |
| private final MutableLiveData<Bitmap> mScreenshotLiveData; |
| private final MutableLiveData<Uri> mResultLiveData; |
| private final MutableLiveData<Integer> mErrorLiveData; |
| |
| AppClipsViewModel(AppClipsCrossProcessHelper appClipsCrossProcessHelper, |
| ImageExporter imageExporter, @Main Executor mainExecutor, |
| @Background Executor bgExecutor) { |
| mAppClipsCrossProcessHelper = appClipsCrossProcessHelper; |
| mImageExporter = imageExporter; |
| mMainExecutor = mainExecutor; |
| mBgExecutor = bgExecutor; |
| |
| mScreenshotLiveData = new MutableLiveData<>(); |
| mResultLiveData = new MutableLiveData<>(); |
| mErrorLiveData = new MutableLiveData<>(); |
| } |
| |
| /** Grabs a screenshot and updates the {@link Bitmap} set in screenshot {@link LiveData}. */ |
| void performScreenshot() { |
| mBgExecutor.execute(() -> { |
| Bitmap screenshot = mAppClipsCrossProcessHelper.takeScreenshot(); |
| mMainExecutor.execute(() -> { |
| if (screenshot == null) { |
| mErrorLiveData.setValue(CAPTURE_CONTENT_FOR_NOTE_FAILED); |
| } else { |
| mScreenshotLiveData.setValue(screenshot); |
| } |
| }); |
| }); |
| } |
| |
| /** Returns a {@link LiveData} that holds the captured screenshot. */ |
| LiveData<Bitmap> getScreenshot() { |
| return mScreenshotLiveData; |
| } |
| |
| /** Returns a {@link LiveData} that holds the {@link Uri} where screenshot is saved. */ |
| LiveData<Uri> getResultLiveData() { |
| return mResultLiveData; |
| } |
| |
| /** |
| * Returns a {@link LiveData} that holds the error codes for |
| * {@link Intent#EXTRA_CAPTURE_CONTENT_FOR_NOTE_STATUS_CODE}. |
| */ |
| LiveData<Integer> getErrorLiveData() { |
| return mErrorLiveData; |
| } |
| |
| /** |
| * Saves the provided {@link Drawable} to storage then informs the result {@link Uri} to |
| * {@link LiveData}. |
| */ |
| void saveScreenshotThenFinish(Drawable screenshotDrawable, Rect bounds, UserHandle user) { |
| mBgExecutor.execute(() -> { |
| // Render the screenshot bitmap in background. |
| Bitmap screenshotBitmap = renderBitmap(screenshotDrawable, bounds); |
| |
| // Export and save the screenshot in background. |
| ListenableFuture<ImageExporter.Result> exportFuture = mImageExporter.export( |
| mBgExecutor, UUID.randomUUID(), screenshotBitmap, user); |
| |
| // Get the result and update state on main thread. |
| exportFuture.addListener(() -> { |
| try { |
| ImageExporter.Result result = exportFuture.get(); |
| if (result.uri == null) { |
| mErrorLiveData.setValue(CAPTURE_CONTENT_FOR_NOTE_FAILED); |
| return; |
| } |
| |
| mResultLiveData.setValue(result.uri); |
| } catch (CancellationException | InterruptedException | ExecutionException e) { |
| mErrorLiveData.setValue(CAPTURE_CONTENT_FOR_NOTE_FAILED); |
| } |
| }, mMainExecutor); |
| }); |
| } |
| |
| private static Bitmap renderBitmap(Drawable drawable, Rect bounds) { |
| final RenderNode output = new RenderNode("Screenshot save"); |
| output.setPosition(0, 0, bounds.width(), bounds.height()); |
| RecordingCanvas canvas = output.beginRecording(); |
| canvas.translate(-bounds.left, -bounds.top); |
| canvas.clipRect(bounds); |
| drawable.draw(canvas); |
| output.endRecording(); |
| return HardwareRenderer.createHardwareBitmap(output, bounds.width(), bounds.height()); |
| } |
| |
| /** Helper factory to help with injecting {@link AppClipsViewModel}. */ |
| static final class Factory implements ViewModelProvider.Factory { |
| |
| private final AppClipsCrossProcessHelper mAppClipsCrossProcessHelper; |
| private final ImageExporter mImageExporter; |
| @Main |
| private final Executor mMainExecutor; |
| @Background |
| private final Executor mBgExecutor; |
| |
| @Inject |
| Factory(AppClipsCrossProcessHelper appClipsCrossProcessHelper, ImageExporter imageExporter, |
| @Main Executor mainExecutor, @Background Executor bgExecutor) { |
| mAppClipsCrossProcessHelper = appClipsCrossProcessHelper; |
| mImageExporter = imageExporter; |
| mMainExecutor = mainExecutor; |
| mBgExecutor = bgExecutor; |
| } |
| |
| @NonNull |
| @Override |
| public <T extends ViewModel> T create(@NonNull Class<T> modelClass) { |
| if (modelClass != AppClipsViewModel.class) { |
| throw new IllegalArgumentException(); |
| } |
| |
| //noinspection unchecked |
| return (T) new AppClipsViewModel(mAppClipsCrossProcessHelper, mImageExporter, |
| mMainExecutor, mBgExecutor); |
| } |
| } |
| } |