1/* 2 * Copyright (C) 2014 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 17package android.support.v4.graphics.drawable; 18 19import android.content.res.Resources; 20import android.graphics.Bitmap; 21import android.graphics.BitmapFactory; 22import android.graphics.Rect; 23import android.os.Build; 24import android.support.v4.graphics.BitmapCompat; 25import android.support.v4.view.GravityCompat; 26import android.support.v4.view.ViewCompat; 27import android.util.Log; 28 29/** 30 * Constructs {@link RoundedBitmapDrawable RoundedBitmapDrawable} objects, 31 * either from Bitmaps directly, or from streams and files. 32 */ 33public final class RoundedBitmapDrawableFactory { 34 private static final String TAG = "RoundedBitmapDrawableFactory"; 35 36 private static class DefaultRoundedBitmapDrawable extends RoundedBitmapDrawable { 37 DefaultRoundedBitmapDrawable(Resources res, Bitmap bitmap) { 38 super(res, bitmap); 39 } 40 41 @Override 42 public void setMipMap(boolean mipMap) { 43 if (mBitmap != null) { 44 BitmapCompat.setHasMipMap(mBitmap, mipMap); 45 invalidateSelf(); 46 } 47 } 48 49 @Override 50 public boolean hasMipMap() { 51 return mBitmap != null && BitmapCompat.hasMipMap(mBitmap); 52 } 53 54 @Override 55 void gravityCompatApply(int gravity, int bitmapWidth, int bitmapHeight, 56 Rect bounds, Rect outRect) { 57 GravityCompat.apply(gravity, bitmapWidth, bitmapHeight, 58 bounds, outRect, ViewCompat.LAYOUT_DIRECTION_LTR); 59 } 60 } 61 62 /** 63 * Returns a new drawable by creating it from a bitmap, setting initial target density based on 64 * the display metrics of the resources. 65 */ 66 public static RoundedBitmapDrawable create(Resources res, Bitmap bitmap) { 67 if (Build.VERSION.SDK_INT >= 21) { 68 return new RoundedBitmapDrawable21(res, bitmap); 69 } 70 return new DefaultRoundedBitmapDrawable(res, bitmap); 71 } 72 73 /** 74 * Returns a new drawable, creating it by opening a given file path and decoding the bitmap. 75 */ 76 public static RoundedBitmapDrawable create(Resources res, 77 String filepath) { 78 final RoundedBitmapDrawable drawable = create(res, BitmapFactory.decodeFile(filepath)); 79 if (drawable.getBitmap() == null) { 80 Log.w(TAG, "RoundedBitmapDrawable cannot decode " + filepath); 81 } 82 return drawable; 83 } 84 85 86 /** 87 * Returns a new drawable, creating it by decoding a bitmap from the given input stream. 88 */ 89 public static RoundedBitmapDrawable create(Resources res, 90 java.io.InputStream is) { 91 final RoundedBitmapDrawable drawable = create(res, BitmapFactory.decodeStream(is)); 92 if (drawable.getBitmap() == null) { 93 Log.w(TAG, "RoundedBitmapDrawable cannot decode " + is); 94 } 95 return drawable; 96 } 97 98 private RoundedBitmapDrawableFactory() {} 99 100} 101