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package com.android.launcher3.dynamicui;
import android.content.Context;
import android.graphics.Color;
import android.support.v4.graphics.ColorUtils;
import android.util.Pair;
import com.android.launcher3.compat.WallpaperColorsCompat;
import com.android.launcher3.compat.WallpaperManagerCompat;
import java.util.ArrayList;
import static android.app.WallpaperManager.FLAG_SYSTEM;
public class WallpaperColorInfo implements WallpaperManagerCompat.OnColorsChangedListenerCompat {
private static final int FALLBACK_COLOR = Color.WHITE;
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 WallpaperManagerCompat mWallpaperManager;
private final ColorExtractionAlgorithm mExtractionType;
private int mMainColor;
private int mSecondaryColor;
private boolean mIsDark;
private boolean mSupportsDarkText;
private OnThemeChangeListener mOnThemeChangeListener;
private WallpaperColorInfo(Context context) {
mWallpaperManager = WallpaperManagerCompat.getInstance(context);
mWallpaperManager.addOnColorsChangedListener(this);
mExtractionType = ColorExtractionAlgorithm.newInstance(context);
update(mWallpaperManager.getWallpaperColors(FLAG_SYSTEM));
}
public int getMainColor() {
return mMainColor;
}
public int getSecondaryColor() {
return mSecondaryColor;
}
public boolean isDark() {
return mIsDark;
}
public boolean supportsDarkText() {
return mSupportsDarkText;
}
@Override
public void onColorsChanged(WallpaperColorsCompat colors, int which) {
if (which == FLAG_SYSTEM) {
boolean wasDarkTheme = mIsDark;
update(colors);
notifyChange(wasDarkTheme != mIsDark);
}
}
private void update(WallpaperColorsCompat wallpaperColors) {
Pair<Integer, Integer> colors = mExtractionType.extractInto(wallpaperColors);
if (colors != null) {
mMainColor = colors.first;
mSecondaryColor = colors.second;
} else {
mMainColor = FALLBACK_COLOR;
mSecondaryColor = FALLBACK_COLOR;
}
mSupportsDarkText = wallpaperColors != null ? wallpaperColors.supportsDarkText() : false;
float[] hsl = new float[3];
ColorUtils.colorToHSL(mMainColor, hsl);
mIsDark = hsl[2] < 0.2f;
}
public void setOnThemeChangeListener(OnThemeChangeListener onThemeChangeListener) {
this.mOnThemeChangeListener = onThemeChangeListener;
}
public void addOnChangeListener(OnChangeListener listener) {
mListeners.add(listener);
}
public void removeOnChangeListener(OnChangeListener listener) {
mListeners.remove(listener);
}
public void notifyChange(boolean themeChanged) {
if (themeChanged) {
if (mOnThemeChangeListener != null) {
mOnThemeChangeListener.onThemeChanged();
}
} else {
for (OnChangeListener listener : mListeners) {
listener.onExtractedColorsChanged(this);
}
}
}
public interface OnChangeListener {
void onExtractedColorsChanged(WallpaperColorInfo wallpaperColorInfo);
}
public interface OnThemeChangeListener {
void onThemeChanged();
}
}
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