1 /* 2 * Copyright (C) 2008 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.example.android.apis.graphics; 18 19 import android.graphics.Canvas; 20 import android.graphics.ColorFilter; 21 import android.graphics.PixelFormat; 22 import android.graphics.drawable.Drawable; 23 24 public class ProxyDrawable extends Drawable { 25 26 private Drawable mProxy; 27 private boolean mMutated; 28 ProxyDrawable(Drawable target)29 public ProxyDrawable(Drawable target) { 30 mProxy = target; 31 } 32 getProxy()33 public Drawable getProxy() { 34 return mProxy; 35 } 36 setProxy(Drawable proxy)37 public void setProxy(Drawable proxy) { 38 if (proxy != this) { 39 mProxy = proxy; 40 } 41 } 42 43 @Override draw(Canvas canvas)44 public void draw(Canvas canvas) { 45 if (mProxy != null) { 46 mProxy.draw(canvas); 47 } 48 } 49 50 @Override getIntrinsicWidth()51 public int getIntrinsicWidth() { 52 return mProxy != null ? mProxy.getIntrinsicWidth() : -1; 53 } 54 55 @Override getIntrinsicHeight()56 public int getIntrinsicHeight() { 57 return mProxy != null ? mProxy.getIntrinsicHeight() : -1; 58 } 59 60 @Override getOpacity()61 public int getOpacity() { 62 return mProxy != null ? mProxy.getOpacity() : PixelFormat.TRANSPARENT; 63 } 64 65 @Override setFilterBitmap(boolean filter)66 public void setFilterBitmap(boolean filter) { 67 if (mProxy != null) { 68 mProxy.setFilterBitmap(filter); 69 } 70 } 71 72 @Override setDither(boolean dither)73 public void setDither(boolean dither) { 74 if (mProxy != null) { 75 mProxy.setDither(dither); 76 } 77 } 78 79 @Override setColorFilter(ColorFilter colorFilter)80 public void setColorFilter(ColorFilter colorFilter) { 81 if (mProxy != null) { 82 mProxy.setColorFilter(colorFilter); 83 } 84 } 85 86 @Override setAlpha(int alpha)87 public void setAlpha(int alpha) { 88 if (mProxy != null) { 89 mProxy.setAlpha(alpha); 90 } 91 } 92 93 @Override mutate()94 public Drawable mutate() { 95 if (mProxy != null && !mMutated && super.mutate() == this) { 96 mProxy.mutate(); 97 mMutated = true; 98 } 99 return this; 100 } 101 } 102 103