1 /* 2 * Copyright (C) 2018 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.car.dialer.ui; 17 18 import android.content.res.Resources; 19 import android.graphics.Bitmap; 20 import android.graphics.Canvas; 21 import android.graphics.ColorFilter; 22 import android.graphics.PixelFormat; 23 import android.graphics.Rect; 24 import android.graphics.drawable.Drawable; 25 import android.support.annotation.NonNull; 26 import android.support.v4.graphics.drawable.RoundedBitmapDrawable; 27 import android.support.v4.graphics.drawable.RoundedBitmapDrawableFactory; 28 29 30 /** 31 * A drawable for displaying a circular bitmap. This is a wrapper over {@link RoundedBitmapDrawable} 32 * since that implementation doesn't behave quite as desired. 33 * 34 * <p>Note that not all drawable functionality is passed to the RoundedBitmapDrawable at this 35 * time. Feel free to add more as necessary. 36 */ 37 public class CircleBitmapDrawable extends Drawable { 38 private final Resources mResources; 39 40 private Bitmap mBitmap; 41 private RoundedBitmapDrawable mDrawable; 42 private int mAlpha = -1; 43 private ColorFilter mCf = null; 44 CircleBitmapDrawable(@onNull Resources res, @NonNull Bitmap bitmap)45 public CircleBitmapDrawable(@NonNull Resources res, @NonNull Bitmap bitmap) { 46 mBitmap = bitmap; 47 mResources = res; 48 } 49 50 @Override onBoundsChange(Rect bounds)51 public void onBoundsChange(Rect bounds) { 52 super.onBoundsChange(bounds); 53 int width = bounds.right - bounds.left; 54 int height = bounds.bottom - bounds.top; 55 56 Bitmap processed = mBitmap; 57 mDrawable = RoundedBitmapDrawableFactory.create(mResources, processed); 58 mDrawable.setBounds(bounds); 59 mDrawable.setAntiAlias(true); 60 mDrawable.setCornerRadius(Math.min(width, height) / 2f); 61 if (mAlpha != -1) { 62 mDrawable.setAlpha(mAlpha); 63 } 64 if (mCf != null) { 65 mDrawable.setColorFilter(mCf); 66 } 67 invalidateSelf(); 68 } 69 70 @Override draw(Canvas canvas)71 public void draw(Canvas canvas) { 72 if (mDrawable != null) { 73 mDrawable.draw(canvas); 74 } 75 } 76 77 @Override getOpacity()78 public int getOpacity() { 79 return mDrawable != null ? mDrawable.getOpacity() : PixelFormat.TRANSLUCENT; 80 } 81 82 @Override setAlpha(int alpha)83 public void setAlpha(int alpha) { 84 mAlpha = alpha; 85 if (mDrawable != null) { 86 mDrawable.setAlpha(alpha); 87 invalidateSelf(); 88 } 89 } 90 91 @Override setColorFilter(ColorFilter cf)92 public void setColorFilter(ColorFilter cf) { 93 mCf = cf; 94 if (mDrawable != null) { 95 mDrawable.setColorFilter(cf); 96 invalidateSelf(); 97 } 98 } 99 100 /** 101 * Convert the drawable to a bitmap. 102 * @param size The target size of the bitmap in pixels. 103 * @return A bitmap representation of the drawable. 104 */ toBitmap(int size)105 public Bitmap toBitmap(int size) { 106 Bitmap largeIcon = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888); 107 Canvas canvas = new Canvas(largeIcon); 108 Rect bounds = getBounds(); 109 setBounds(0, 0, canvas.getWidth(), canvas.getHeight()); 110 draw(canvas); 111 setBounds(bounds); 112 return largeIcon; 113 } 114 } 115 116