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      1 /*
      2  * Copyright (C) 2017 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 package com.android.launcher3.compat;
     17 
     18 import android.annotation.TargetApi;
     19 import android.app.WallpaperColors;
     20 import android.app.WallpaperManager;
     21 import android.app.WallpaperManager.OnColorsChangedListener;
     22 import android.content.Context;
     23 import android.graphics.Color;
     24 import android.support.annotation.Nullable;
     25 import android.util.Log;
     26 
     27 import java.lang.reflect.Method;
     28 
     29 
     30 @TargetApi(27)
     31 public class WallpaperManagerCompatVOMR1 extends WallpaperManagerCompat {
     32 
     33     private static final String TAG = "WMCompatVOMR1";
     34 
     35     private final WallpaperManager mWm;
     36     private Method mWCColorHintsMethod;
     37 
     38     WallpaperManagerCompatVOMR1(Context context) throws Throwable {
     39         mWm = context.getSystemService(WallpaperManager.class);
     40         String className = WallpaperColors.class.getName();
     41         try {
     42             mWCColorHintsMethod = WallpaperColors.class.getDeclaredMethod("getColorHints");
     43         } catch (Exception exc) {
     44             Log.e(TAG, "getColorHints not available", exc);
     45         }
     46     }
     47 
     48     @Nullable
     49     @Override
     50     public WallpaperColorsCompat getWallpaperColors(int which) {
     51         return convertColorsObject(mWm.getWallpaperColors(which));
     52     }
     53 
     54     @Override
     55     public void addOnColorsChangedListener(final OnColorsChangedListenerCompat listener) {
     56         OnColorsChangedListener onChangeListener = new OnColorsChangedListener() {
     57             @Override
     58             public void onColorsChanged(WallpaperColors colors, int which) {
     59                 listener.onColorsChanged(convertColorsObject(colors), which);
     60             }
     61         };
     62         mWm.addOnColorsChangedListener(onChangeListener, null);
     63     }
     64 
     65     private WallpaperColorsCompat convertColorsObject(WallpaperColors colors) {
     66         if (colors == null) {
     67             return null;
     68         }
     69         Color primary = colors.getPrimaryColor();
     70         Color secondary = colors.getSecondaryColor();
     71         Color tertiary = colors.getTertiaryColor();
     72         int primaryVal = primary != null ? primary.toArgb() : 0;
     73         int secondaryVal = secondary != null ? secondary.toArgb() : 0;
     74         int tertiaryVal = tertiary != null ? tertiary.toArgb() : 0;
     75         int colorHints = 0;
     76         try {
     77             if (mWCColorHintsMethod != null) {
     78                 colorHints = (Integer) mWCColorHintsMethod.invoke(colors);
     79             }
     80         } catch (Exception exc) {
     81             Log.e(TAG, "error calling color hints", exc);
     82         }
     83         return new WallpaperColorsCompat(primaryVal, secondaryVal, tertiaryVal, colorHints);
     84     }
     85 }
     86