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      1 /*
      2  * Copyright (C) 2012 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 
     17 package com.android.dialer.util;
     18 
     19 import android.content.Context;
     20 import android.graphics.Bitmap;
     21 import android.graphics.Canvas;
     22 import android.graphics.drawable.BitmapDrawable;
     23 import android.graphics.drawable.Drawable;
     24 import android.support.annotation.NonNull;
     25 import android.support.annotation.Nullable;
     26 import android.support.v4.graphics.drawable.RoundedBitmapDrawable;
     27 import android.support.v4.graphics.drawable.RoundedBitmapDrawableFactory;
     28 import com.android.dialer.common.LogUtil;
     29 
     30 /** Provides utilities for bitmaps and drawables. */
     31 public class DrawableConverter {
     32 
     33   private DrawableConverter() {}
     34 
     35   /** Converts the provided drawable to a bitmap using the drawable's intrinsic width and height. */
     36   @Nullable
     37   public static Bitmap drawableToBitmap(@Nullable Drawable drawable) {
     38     return drawableToBitmap(drawable, 0, 0);
     39   }
     40 
     41   /**
     42    * Converts the provided drawable to a bitmap with the specified width and height.
     43    *
     44    * <p>If both width and height are 0, the drawable's intrinsic width and height are used (but in
     45    * that case {@link #drawableToBitmap(Drawable)} should be used).
     46    */
     47   @Nullable
     48   public static Bitmap drawableToBitmap(@Nullable Drawable drawable, int width, int height) {
     49     if (drawable == null) {
     50       return null;
     51     }
     52 
     53     Bitmap bitmap;
     54     if (drawable instanceof BitmapDrawable) {
     55       bitmap = ((BitmapDrawable) drawable).getBitmap();
     56     } else {
     57       if (width > 0 || height > 0) {
     58         bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
     59       } else if (drawable.getIntrinsicWidth() <= 0 || drawable.getIntrinsicHeight() <= 0) {
     60         // Needed for drawables that are just a colour.
     61         bitmap = Bitmap.createBitmap(1, 1, Bitmap.Config.ARGB_8888);
     62       } else {
     63         bitmap =
     64             Bitmap.createBitmap(
     65                 drawable.getIntrinsicWidth(),
     66                 drawable.getIntrinsicHeight(),
     67                 Bitmap.Config.ARGB_8888);
     68       }
     69 
     70       LogUtil.i(
     71           "DrawableConverter.drawableToBitmap",
     72           "created bitmap with width: %d, height: %d",
     73           bitmap.getWidth(),
     74           bitmap.getHeight());
     75 
     76       Canvas canvas = new Canvas(bitmap);
     77       drawable.setBounds(0, 0, canvas.getWidth(), canvas.getHeight());
     78       drawable.draw(canvas);
     79     }
     80     return bitmap;
     81   }
     82 
     83   @Nullable
     84   public static Drawable getRoundedDrawable(
     85       @NonNull Context context, @Nullable Drawable photo, int width, int height) {
     86     Bitmap bitmap = drawableToBitmap(photo);
     87     if (bitmap != null) {
     88       Bitmap scaledBitmap = Bitmap.createScaledBitmap(bitmap, width, height, false);
     89       RoundedBitmapDrawable drawable =
     90           RoundedBitmapDrawableFactory.create(context.getResources(), scaledBitmap);
     91       drawable.setAntiAlias(true);
     92       drawable.setCornerRadius(drawable.getIntrinsicHeight() / 2);
     93       return drawable;
     94     }
     95     return null;
     96   }
     97 }
     98