7c71bb2703
Use mNeedsDrawAfterLoadingWallpaper to determine if redraw is needed. Test: manual: set different wallpapers, or use the sample app in b/110432281 Change-Id: Ibd5639ce59e9b59869f067705b9db25f7de8b201 Fixes: 110432281 Bug: 110432281 Bug: 109972857
519 lines
20 KiB
Java
519 lines
20 KiB
Java
/*
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* Copyright (C) 2009 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.systemui;
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import android.app.WallpaperManager;
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import android.content.ComponentCallbacks2;
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import android.graphics.Bitmap;
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import android.graphics.Canvas;
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import android.graphics.Rect;
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import android.graphics.RectF;
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import android.graphics.Region.Op;
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import android.os.AsyncTask;
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import android.os.Handler;
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import android.os.Trace;
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import android.service.wallpaper.WallpaperService;
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import android.util.Log;
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import android.view.Display;
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import android.view.DisplayInfo;
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import android.view.Surface;
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import android.view.SurfaceHolder;
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import android.view.WindowManager;
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import java.io.FileDescriptor;
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import java.io.IOException;
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import java.io.PrintWriter;
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/**
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* Default built-in wallpaper that simply shows a static image.
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*/
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@SuppressWarnings({"UnusedDeclaration"})
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public class ImageWallpaper extends WallpaperService {
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private static final String TAG = "ImageWallpaper";
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private static final String GL_LOG_TAG = "ImageWallpaperGL";
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private static final boolean DEBUG = false;
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private static final String PROPERTY_KERNEL_QEMU = "ro.kernel.qemu";
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private static final long DELAY_FORGET_WALLPAPER = 5000;
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private WallpaperManager mWallpaperManager;
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private DrawableEngine mEngine;
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@Override
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public void onCreate() {
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super.onCreate();
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mWallpaperManager = getSystemService(WallpaperManager.class);
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}
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@Override
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public void onTrimMemory(int level) {
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if (mEngine != null) {
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mEngine.trimMemory(level);
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}
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}
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@Override
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public Engine onCreateEngine() {
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mEngine = new DrawableEngine();
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return mEngine;
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}
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class DrawableEngine extends Engine {
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private final Runnable mUnloadWallpaperCallback = () -> {
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unloadWallpaper(false /* forgetSize */);
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};
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Bitmap mBackground;
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int mBackgroundWidth = -1, mBackgroundHeight = -1;
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int mLastSurfaceWidth = -1, mLastSurfaceHeight = -1;
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int mLastRotation = -1;
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float mXOffset = 0f;
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float mYOffset = 0f;
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float mScale = 1f;
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private Display mDefaultDisplay;
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private final DisplayInfo mTmpDisplayInfo = new DisplayInfo();
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boolean mVisible = true;
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boolean mOffsetsChanged;
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int mLastXTranslation;
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int mLastYTranslation;
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private int mRotationAtLastSurfaceSizeUpdate = -1;
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private int mDisplayWidthAtLastSurfaceSizeUpdate = -1;
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private int mDisplayHeightAtLastSurfaceSizeUpdate = -1;
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private int mLastRequestedWidth = -1;
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private int mLastRequestedHeight = -1;
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private AsyncTask<Void, Void, Bitmap> mLoader;
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private boolean mNeedsDrawAfterLoadingWallpaper;
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private boolean mSurfaceValid;
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private boolean mSurfaceRedrawNeeded;
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DrawableEngine() {
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super();
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setFixedSizeAllowed(true);
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}
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void trimMemory(int level) {
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if (level >= ComponentCallbacks2.TRIM_MEMORY_RUNNING_LOW
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&& level <= ComponentCallbacks2.TRIM_MEMORY_RUNNING_CRITICAL
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&& mBackground != null) {
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if (DEBUG) {
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Log.d(TAG, "trimMemory");
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}
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unloadWallpaper(true /* forgetSize */);
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}
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}
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@Override
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public void onCreate(SurfaceHolder surfaceHolder) {
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if (DEBUG) {
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Log.d(TAG, "onCreate");
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}
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super.onCreate(surfaceHolder);
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//noinspection ConstantConditions
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mDefaultDisplay = getSystemService(WindowManager.class).getDefaultDisplay();
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setOffsetNotificationsEnabled(false);
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updateSurfaceSize(surfaceHolder, getDefaultDisplayInfo(), false /* forDraw */);
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}
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@Override
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public void onDestroy() {
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super.onDestroy();
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mBackground = null;
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unloadWallpaper(true /* forgetSize */);
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}
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boolean updateSurfaceSize(SurfaceHolder surfaceHolder, DisplayInfo displayInfo,
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boolean forDraw) {
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boolean hasWallpaper = true;
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// Load background image dimensions, if we haven't saved them yet
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if (mBackgroundWidth <= 0 || mBackgroundHeight <= 0) {
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// Need to load the image to get dimensions
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loadWallpaper(forDraw);
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if (DEBUG) {
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Log.d(TAG, "Reloading, redoing updateSurfaceSize later.");
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}
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hasWallpaper = false;
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}
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// Force the wallpaper to cover the screen in both dimensions
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int surfaceWidth = Math.max(displayInfo.logicalWidth, mBackgroundWidth);
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int surfaceHeight = Math.max(displayInfo.logicalHeight, mBackgroundHeight);
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// Used a fixed size surface, because we are special. We can do
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// this because we know the current design of window animations doesn't
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// cause this to break.
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surfaceHolder.setFixedSize(surfaceWidth, surfaceHeight);
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mLastRequestedWidth = surfaceWidth;
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mLastRequestedHeight = surfaceHeight;
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return hasWallpaper;
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}
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@Override
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public void onVisibilityChanged(boolean visible) {
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if (DEBUG) {
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Log.d(TAG, "onVisibilityChanged: mVisible, visible=" + mVisible + ", " + visible);
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}
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if (mVisible != visible) {
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if (DEBUG) {
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Log.d(TAG, "Visibility changed to visible=" + visible);
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}
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mVisible = visible;
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if (visible) {
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drawFrame();
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}
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}
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}
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@Override
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public void onOffsetsChanged(float xOffset, float yOffset,
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float xOffsetStep, float yOffsetStep,
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int xPixels, int yPixels) {
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if (DEBUG) {
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Log.d(TAG, "onOffsetsChanged: xOffset=" + xOffset + ", yOffset=" + yOffset
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+ ", xOffsetStep=" + xOffsetStep + ", yOffsetStep=" + yOffsetStep
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+ ", xPixels=" + xPixels + ", yPixels=" + yPixels);
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}
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if (mXOffset != xOffset || mYOffset != yOffset) {
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if (DEBUG) {
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Log.d(TAG, "Offsets changed to (" + xOffset + "," + yOffset + ").");
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}
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mXOffset = xOffset;
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mYOffset = yOffset;
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mOffsetsChanged = true;
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}
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drawFrame();
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}
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@Override
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public void onSurfaceChanged(SurfaceHolder holder, int format, int width, int height) {
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if (DEBUG) {
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Log.d(TAG, "onSurfaceChanged: width=" + width + ", height=" + height);
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}
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super.onSurfaceChanged(holder, format, width, height);
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drawFrame();
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}
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@Override
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public void onSurfaceDestroyed(SurfaceHolder holder) {
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super.onSurfaceDestroyed(holder);
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if (DEBUG) {
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Log.i(TAG, "onSurfaceDestroyed");
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}
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mLastSurfaceWidth = mLastSurfaceHeight = -1;
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mSurfaceValid = false;
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}
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@Override
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public void onSurfaceCreated(SurfaceHolder holder) {
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super.onSurfaceCreated(holder);
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if (DEBUG) {
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Log.i(TAG, "onSurfaceCreated");
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}
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mLastSurfaceWidth = mLastSurfaceHeight = -1;
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mSurfaceValid = true;
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}
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@Override
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public void onSurfaceRedrawNeeded(SurfaceHolder holder) {
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if (DEBUG) {
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Log.d(TAG, "onSurfaceRedrawNeeded");
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}
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super.onSurfaceRedrawNeeded(holder);
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// At the end of this method we should have drawn into the surface.
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// This means that the bitmap should be loaded synchronously if
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// it was already unloaded.
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if (mBackground == null) {
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updateBitmap(mWallpaperManager.getBitmap(true /* hardware */));
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}
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mSurfaceRedrawNeeded = true;
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drawFrame();
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}
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private DisplayInfo getDefaultDisplayInfo() {
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mDefaultDisplay.getDisplayInfo(mTmpDisplayInfo);
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return mTmpDisplayInfo;
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}
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void drawFrame() {
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if (!mSurfaceValid) {
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return;
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}
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try {
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Trace.traceBegin(Trace.TRACE_TAG_VIEW, "drawWallpaper");
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DisplayInfo displayInfo = getDefaultDisplayInfo();
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int newRotation = displayInfo.rotation;
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// Sometimes a wallpaper is not large enough to cover the screen in one dimension.
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// Call updateSurfaceSize -- it will only actually do the update if the dimensions
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// should change
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if (newRotation != mLastRotation) {
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// Update surface size (if necessary)
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if (!updateSurfaceSize(getSurfaceHolder(), displayInfo, true /* forDraw */)) {
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return; // had to reload wallpaper, will retry later
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}
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mRotationAtLastSurfaceSizeUpdate = newRotation;
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mDisplayWidthAtLastSurfaceSizeUpdate = displayInfo.logicalWidth;
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mDisplayHeightAtLastSurfaceSizeUpdate = displayInfo.logicalHeight;
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}
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SurfaceHolder sh = getSurfaceHolder();
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final Rect frame = sh.getSurfaceFrame();
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final int dw = frame.width();
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final int dh = frame.height();
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boolean surfaceDimensionsChanged = dw != mLastSurfaceWidth
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|| dh != mLastSurfaceHeight;
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boolean redrawNeeded = surfaceDimensionsChanged || newRotation != mLastRotation
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|| mSurfaceRedrawNeeded || mNeedsDrawAfterLoadingWallpaper;
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if (!redrawNeeded && !mOffsetsChanged) {
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if (DEBUG) {
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Log.d(TAG, "Suppressed drawFrame since redraw is not needed "
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+ "and offsets have not changed.");
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}
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return;
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}
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mLastRotation = newRotation;
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mSurfaceRedrawNeeded = false;
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// Load bitmap if it is not yet loaded
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if (mBackground == null) {
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loadWallpaper(true);
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if (DEBUG) {
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Log.d(TAG, "Reloading, resuming draw later");
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}
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return;
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}
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// Left align the scaled image
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mScale = Math.max(1f, Math.max(dw / (float) mBackground.getWidth(),
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dh / (float) mBackground.getHeight()));
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final int availw = (int) (mBackground.getWidth() * mScale) - dw;
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final int availh = (int) (mBackground.getHeight() * mScale) - dh;
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int xPixels = (int) (availw * mXOffset);
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int yPixels = (int) (availh * mYOffset);
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mOffsetsChanged = false;
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if (surfaceDimensionsChanged) {
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mLastSurfaceWidth = dw;
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mLastSurfaceHeight = dh;
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}
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if (!redrawNeeded && xPixels == mLastXTranslation && yPixels == mLastYTranslation) {
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if (DEBUG) {
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Log.d(TAG, "Suppressed drawFrame since the image has not "
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+ "actually moved an integral number of pixels.");
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}
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return;
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}
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mLastXTranslation = xPixels;
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mLastYTranslation = yPixels;
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if (DEBUG) {
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Log.d(TAG, "Redrawing wallpaper");
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}
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drawWallpaperWithCanvas(sh, availw, availh, xPixels, yPixels);
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scheduleUnloadWallpaper();
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} finally {
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Trace.traceEnd(Trace.TRACE_TAG_VIEW);
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}
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}
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/**
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* Loads the wallpaper on background thread and schedules updating the surface frame,
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* and if {@param needsDraw} is set also draws a frame.
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*
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* If loading is already in-flight, subsequent loads are ignored (but needDraw is or-ed to
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* the active request).
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*
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* If {@param needsReset} is set also clears the cache in WallpaperManager first.
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*/
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private void loadWallpaper(boolean needsDraw) {
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mNeedsDrawAfterLoadingWallpaper |= needsDraw;
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if (mLoader != null) {
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if (DEBUG) {
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Log.d(TAG, "Skipping loadWallpaper, already in flight ");
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}
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return;
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}
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mLoader = new AsyncTask<Void, Void, Bitmap>() {
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@Override
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protected Bitmap doInBackground(Void... params) {
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Throwable exception;
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try {
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return mWallpaperManager.getBitmap(true /* hardware */);
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} catch (RuntimeException | OutOfMemoryError e) {
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exception = e;
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}
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if (isCancelled()) {
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return null;
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}
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// Note that if we do fail at this, and the default wallpaper can't
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// be loaded, we will go into a cycle. Don't do a build where the
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// default wallpaper can't be loaded.
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Log.w(TAG, "Unable to load wallpaper!", exception);
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try {
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mWallpaperManager.clear();
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} catch (IOException ex) {
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// now we're really screwed.
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Log.w(TAG, "Unable reset to default wallpaper!", ex);
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}
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if (isCancelled()) {
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return null;
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}
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try {
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return mWallpaperManager.getBitmap(true /* hardware */);
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} catch (RuntimeException | OutOfMemoryError e) {
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Log.w(TAG, "Unable to load default wallpaper!", e);
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}
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return null;
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}
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@Override
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protected void onPostExecute(Bitmap b) {
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updateBitmap(b);
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if (mNeedsDrawAfterLoadingWallpaper) {
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drawFrame();
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}
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mLoader = null;
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mNeedsDrawAfterLoadingWallpaper = false;
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}
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}.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR);
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}
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private void updateBitmap(Bitmap bitmap) {
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mBackground = null;
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mBackgroundWidth = -1;
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mBackgroundHeight = -1;
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if (bitmap != null) {
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mBackground = bitmap;
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mBackgroundWidth = mBackground.getWidth();
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mBackgroundHeight = mBackground.getHeight();
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}
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if (DEBUG) {
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Log.d(TAG, "Wallpaper loaded: " + mBackground);
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}
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updateSurfaceSize(getSurfaceHolder(), getDefaultDisplayInfo(),
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false /* forDraw */);
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}
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private void unloadWallpaper(boolean forgetSize) {
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if (mLoader != null) {
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mLoader.cancel(false);
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mLoader = null;
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}
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mBackground = null;
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if (forgetSize) {
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mBackgroundWidth = -1;
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mBackgroundHeight = -1;
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}
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final Surface surface = getSurfaceHolder().getSurface();
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surface.hwuiDestroy();
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mWallpaperManager.forgetLoadedWallpaper();
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}
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private void scheduleUnloadWallpaper() {
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Handler handler = getMainThreadHandler();
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handler.removeCallbacks(mUnloadWallpaperCallback);
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handler.postDelayed(mUnloadWallpaperCallback, DELAY_FORGET_WALLPAPER);
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}
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@Override
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protected void dump(String prefix, FileDescriptor fd, PrintWriter out, String[] args) {
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super.dump(prefix, fd, out, args);
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out.print(prefix); out.println("ImageWallpaper.DrawableEngine:");
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out.print(prefix); out.print(" mBackground="); out.print(mBackground);
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out.print(" mBackgroundWidth="); out.print(mBackgroundWidth);
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out.print(" mBackgroundHeight="); out.println(mBackgroundHeight);
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out.print(prefix); out.print(" mLastRotation="); out.print(mLastRotation);
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out.print(" mLastSurfaceWidth="); out.print(mLastSurfaceWidth);
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out.print(" mLastSurfaceHeight="); out.println(mLastSurfaceHeight);
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out.print(prefix); out.print(" mXOffset="); out.print(mXOffset);
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out.print(" mYOffset="); out.println(mYOffset);
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out.print(prefix); out.print(" mVisible="); out.print(mVisible);
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out.print(" mOffsetsChanged="); out.println(mOffsetsChanged);
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out.print(prefix); out.print(" mLastXTranslation="); out.print(mLastXTranslation);
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out.print(" mLastYTranslation="); out.print(mLastYTranslation);
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out.print(" mScale="); out.println(mScale);
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out.print(prefix); out.print(" mLastRequestedWidth="); out.print(mLastRequestedWidth);
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out.print(" mLastRequestedHeight="); out.println(mLastRequestedHeight);
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out.print(prefix); out.println(" DisplayInfo at last updateSurfaceSize:");
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out.print(prefix);
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out.print(" rotation="); out.print(mRotationAtLastSurfaceSizeUpdate);
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out.print(" width="); out.print(mDisplayWidthAtLastSurfaceSizeUpdate);
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out.print(" height="); out.println(mDisplayHeightAtLastSurfaceSizeUpdate);
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}
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private void drawWallpaperWithCanvas(SurfaceHolder sh, int w, int h, int left, int top) {
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Canvas c = sh.lockHardwareCanvas();
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if (c != null) {
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try {
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if (DEBUG) {
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Log.d(TAG, "Redrawing: left=" + left + ", top=" + top);
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}
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final float right = left + mBackground.getWidth() * mScale;
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final float bottom = top + mBackground.getHeight() * mScale;
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if (w < 0 || h < 0) {
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c.save(Canvas.CLIP_SAVE_FLAG);
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c.clipRect(left, top, right, bottom,
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Op.DIFFERENCE);
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c.drawColor(0xff000000);
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c.restore();
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}
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if (mBackground != null) {
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RectF dest = new RectF(left, top, right, bottom);
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Log.i(TAG, "Redrawing in rect: " + dest + " with surface size: "
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+ mLastRequestedWidth + "x" + mLastRequestedHeight);
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c.drawBitmap(mBackground, null, dest, null);
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}
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} finally {
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sh.unlockCanvasAndPost(c);
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}
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}
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}
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}
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}
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