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/*
* 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.launcher3.uioverrides;
import static android.app.WallpaperManager.FLAG_SYSTEM;
import android.annotation.TargetApi;
import android.app.WallpaperColors;
import android.app.WallpaperManager;
import android.app.WallpaperManager.OnColorsChangedListener;
import android.content.Context;
import android.os.Build;
import android.os.Handler;
import android.os.Looper;
import com.android.systemui.shared.system.TonalCompat;
import com.android.systemui.shared.system.TonalCompat.ExtractionInfo;
import java.util.ArrayList;
@TargetApi(Build.VERSION_CODES.P)
public class WallpaperColorInfo implements OnColorsChangedListener {
private static final int MAIN_COLOR_LIGHT = 0xffdadce0;
private static final int MAIN_COLOR_DARK = 0xff202124;
private static final int MAIN_COLOR_REGULAR = 0xff000000;
private static final Object sInstanceLock = new Object();
private static WallpaperColorInfo sInstance;
public static WallpaperColorInfo getInstance(Context context) {
synchronized (sInstanceLock) {
if (sInstance == null) {
sInstance = new WallpaperColorInfo(context.getApplicationContext());
}
return sInstance;
}
}
private final ArrayList<OnChangeListener> mListeners = new ArrayList<>();
private final WallpaperManager mWallpaperManager;
private final TonalCompat mTonalCompat;
private ExtractionInfo mExtractionInfo;
private OnChangeListener[] mTempListeners = new OnChangeListener[0];
private WallpaperColorInfo(Context context) {
mWallpaperManager = context.getSystemService(WallpaperManager.class);
mTonalCompat = new TonalCompat(context);
mWallpaperManager.addOnColorsChangedListener(this, new Handler(Looper.getMainLooper()));
update(mWallpaperManager.getWallpaperColors(FLAG_SYSTEM));
}
public int getMainColor() {
return mExtractionInfo.mainColor;
}
public int getSecondaryColor() {
return mExtractionInfo.secondaryColor;
}
public boolean isDark() {
return mExtractionInfo.supportsDarkTheme;
}
public boolean supportsDarkText() {
return mExtractionInfo.supportsDarkText;
}
public boolean isMainColorDark() {
return mExtractionInfo.mainColor == MAIN_COLOR_DARK;
}
@Override
public void onColorsChanged(WallpaperColors colors, int which) {
if ((which & FLAG_SYSTEM) != 0) {
update(colors);
notifyChange();
}
}
private void update(WallpaperColors wallpaperColors) {
mExtractionInfo = mTonalCompat.extractDarkColors(wallpaperColors);
}
public void addOnChangeListener(OnChangeListener listener) {
mListeners.add(listener);
}
public void removeOnChangeListener(OnChangeListener listener) {
mListeners.remove(listener);
}
private void notifyChange() {
// Create a new array to avoid concurrent modification when the activity destroys itself.
mTempListeners = mListeners.toArray(mTempListeners);
for (OnChangeListener listener : mTempListeners) {
if (listener != null) {
listener.onExtractedColorsChanged(this);
}
}
}
public interface OnChangeListener {
void onExtractedColorsChanged(WallpaperColorInfo wallpaperColorInfo);
}
}
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