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/*
* Copyright (C) 2017 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.colorextraction;
import android.app.WallpaperColors;
import android.app.WallpaperManager;
import android.content.Context;
import android.os.Handler;
import android.os.RemoteException;
import android.os.UserHandle;
import android.util.Log;
import android.view.Display;
import android.view.IWallpaperVisibilityListener;
import android.view.IWindowManager;
import android.view.WindowManagerGlobal;
import com.android.internal.annotations.VisibleForTesting;
import com.android.internal.colorextraction.ColorExtractor;
import com.android.internal.colorextraction.types.ExtractionType;
import com.android.internal.colorextraction.types.Tonal;
import com.android.keyguard.KeyguardUpdateMonitor;
import com.android.systemui.Dumpable;
import java.io.FileDescriptor;
import java.io.PrintWriter;
import java.util.Arrays;
/**
* ColorExtractor aware of wallpaper visibility
*/
public class SysuiColorExtractor extends ColorExtractor implements Dumpable {
private static final String TAG = "SysuiColorExtractor";
private boolean mWallpaperVisible;
private boolean mHasBackdrop;
// Colors to return when the wallpaper isn't visible
private final GradientColors mWpHiddenColors;
public SysuiColorExtractor(Context context) {
this(context, new Tonal(context), true);
}
@VisibleForTesting
public SysuiColorExtractor(Context context, ExtractionType type, boolean registerVisibility) {
super(context, type);
mWpHiddenColors = new GradientColors();
WallpaperColors systemColors = getWallpaperColors(WallpaperManager.FLAG_SYSTEM);
updateDefaultGradients(systemColors);
if (registerVisibility) {
try {
IWindowManager windowManagerService = WindowManagerGlobal.getWindowManagerService();
Handler handler = Handler.getMain();
boolean visible = windowManagerService.registerWallpaperVisibilityListener(
new IWallpaperVisibilityListener.Stub() {
@Override
public void onWallpaperVisibilityChanged(boolean newVisibility,
int displayId) throws RemoteException {
handler.post(() -> setWallpaperVisible(newVisibility));
}
}, Display.DEFAULT_DISPLAY);
setWallpaperVisible(visible);
} catch (RemoteException e) {
Log.w(TAG, "Can't listen to wallpaper visibility changes", e);
}
}
WallpaperManager wallpaperManager = context.getSystemService(WallpaperManager.class);
if (wallpaperManager != null) {
// Listen to all users instead of only the current one.
wallpaperManager.removeOnColorsChangedListener(this);
wallpaperManager.addOnColorsChangedListener(this, null /* handler */,
UserHandle.USER_ALL);
}
}
private void updateDefaultGradients(WallpaperColors colors) {
Tonal.applyFallback(colors, mWpHiddenColors);
}
@Override
public void onColorsChanged(WallpaperColors colors, int which, int userId) {
if (userId != KeyguardUpdateMonitor.getCurrentUser()) {
// Colors do not belong to current user, ignoring.
return;
}
super.onColorsChanged(colors, which);
if ((which & WallpaperManager.FLAG_SYSTEM) != 0) {
updateDefaultGradients(colors);
}
}
@VisibleForTesting
GradientColors getFallbackColors() {
return mWpHiddenColors;
}
/**
* Get TYPE_NORMAL colors when wallpaper is visible, or fallback otherwise.
*
* @param which FLAG_LOCK or FLAG_SYSTEM
* @return colors
*/
@Override
public GradientColors getColors(int which) {
return getColors(which, TYPE_DARK);
}
/**
* Wallpaper colors when the wallpaper is visible, fallback otherwise.
*
* @param which FLAG_LOCK or FLAG_SYSTEM
* @param type TYPE_NORMAL, TYPE_DARK or TYPE_EXTRA_DARK
* @return colors
*/
@Override
public GradientColors getColors(int which, int type) {
return getColors(which, type, false /* ignoreVisibility */);
}
/**
* Get TYPE_NORMAL colors, possibly ignoring wallpaper visibility.
*
* @param which FLAG_LOCK or FLAG_SYSTEM
* @param ignoreWallpaperVisibility whether you want fallback colors or not if the wallpaper
* isn't visible
* @return
*/
public GradientColors getColors(int which, boolean ignoreWallpaperVisibility) {
return getColors(which, TYPE_NORMAL, ignoreWallpaperVisibility);
}
/**
*
* @param which FLAG_LOCK or FLAG_SYSTEM
* @param type TYPE_NORMAL, TYPE_DARK or TYPE_EXTRA_DARK
* @param ignoreWallpaperVisibility true if true wallpaper colors should be returning
* if it's visible or not
* @return colors
*/
public GradientColors getColors(int which, int type, boolean ignoreWallpaperVisibility) {
// mWallpaperVisible only handles the "system wallpaper" and will be always set to false
// if we have different lock and system wallpapers.
if (which == WallpaperManager.FLAG_SYSTEM) {
if (mWallpaperVisible || ignoreWallpaperVisibility) {
return super.getColors(which, type);
} else {
return mWpHiddenColors;
}
} else {
if (mHasBackdrop) {
return mWpHiddenColors;
} else {
return super.getColors(which, type);
}
}
}
@VisibleForTesting
void setWallpaperVisible(boolean visible) {
if (mWallpaperVisible != visible) {
mWallpaperVisible = visible;
triggerColorsChanged(WallpaperManager.FLAG_SYSTEM);
}
}
public void setHasBackdrop(boolean hasBackdrop) {
if (mHasBackdrop != hasBackdrop) {
mHasBackdrop = hasBackdrop;
triggerColorsChanged(WallpaperManager.FLAG_LOCK);
}
}
@Override
public void dump(FileDescriptor fd, PrintWriter pw, String[] args) {
pw.println("SysuiColorExtractor:");
pw.println(" Current wallpaper colors:");
pw.println(" system: " + mSystemColors);
pw.println(" lock: " + mLockColors);
GradientColors[] system = mGradientColors.get(WallpaperManager.FLAG_SYSTEM);
GradientColors[] lock = mGradientColors.get(WallpaperManager.FLAG_LOCK);
pw.println(" Gradients:");
pw.println(" system: " + Arrays.toString(system));
pw.println(" lock: " + Arrays.toString(lock));
pw.println(" Default scrim: " + mWpHiddenColors);
}
}
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