1 /* 2 * Copyright (C) 2011 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 android.holo.cts; 18 19 import android.content.Context; 20 import android.content.res.Resources; 21 import android.graphics.Bitmap; 22 import android.graphics.Bitmap.CompressFormat; 23 import android.graphics.drawable.BitmapDrawable; 24 import android.graphics.drawable.Drawable; 25 import android.holo.cts.LayoutAdapter.LayoutInfo; 26 import android.holo.cts.ThemeAdapter.ThemeInfo; 27 import android.os.Environment; 28 import android.util.Log; 29 30 import java.io.File; 31 import java.io.FileOutputStream; 32 import java.io.IOException; 33 34 /** 35 * Collection of utility methods to handle creation and deletion of assets. 36 * 37 * It creates a directory called "cts-holo-assets" on the external storage. 38 * Below that it creates a directory called "reference" to store images 39 * generated by the generator and "failure" to store images that failed to 40 * match when running the test. 41 */ 42 class BitmapAssets { 43 44 private static final String TAG = BitmapAssets.class.getSimpleName(); 45 46 static final int TYPE_REFERENCE = 0; 47 48 static final int TYPE_FAILED = 1; 49 50 static final int TYPE_DIFF = 2; 51 clearDirectory(int type)52 public static boolean clearDirectory(int type) { 53 if (!isExternalStorageReady()) { 54 return false; 55 } 56 57 File dir = getBitmapDir(type); 58 if (dir.exists()) { 59 File[] files = dir.listFiles(); 60 int numFiles = files.length; 61 for (int i = 0; i < numFiles; i++) { 62 files[i].delete(); 63 } 64 } 65 return true; 66 } 67 isExternalStorageReady()68 private static boolean isExternalStorageReady() { 69 return Environment.MEDIA_MOUNTED.equals(Environment.getExternalStorageState()); 70 } 71 getBitmapDir(int type)72 public static File getBitmapDir(int type) { 73 String subDir; 74 switch (type) { 75 case TYPE_REFERENCE: 76 subDir = "reference"; 77 break; 78 case TYPE_FAILED: 79 subDir = "failed"; 80 break; 81 case TYPE_DIFF: 82 subDir = "diff"; 83 break; 84 default: 85 throw new IllegalArgumentException("Bad type: " + type); 86 } 87 88 File file = new File(Environment.getExternalStorageDirectory(), "cts-holo-assets"); 89 return new File(file, subDir); 90 } 91 getBitmapName(ThemeInfo themeInfo, LayoutInfo layoutInfo)92 public static String getBitmapName(ThemeInfo themeInfo, LayoutInfo layoutInfo) { 93 return themeInfo.getBitmapName() + "_" + layoutInfo.getBitmapName(); 94 } 95 getBitmap(Context context, String bitmapName)96 public static Bitmap getBitmap(Context context, String bitmapName) { 97 Resources resources = context.getResources(); 98 int resourceId = resources.getIdentifier(bitmapName, "drawable", context.getPackageName()); 99 return ((BitmapDrawable) resources.getDrawable(resourceId)).getBitmap(); 100 } 101 getBitmapPath(String bitmapName, int type)102 public static File getBitmapPath(String bitmapName, int type) { 103 String prefix; 104 switch (type) { 105 case TYPE_REFERENCE: 106 prefix = ""; 107 break; 108 case TYPE_FAILED: 109 prefix = "failed_"; 110 break; 111 case TYPE_DIFF: 112 prefix = "diff_"; 113 break; 114 default: 115 throw new IllegalArgumentException("Bad type: " + type); 116 } 117 118 return new File(getBitmapDir(type), prefix + bitmapName + ".png"); 119 } 120 saveBitmap(Bitmap bitmap, String bitmapName, int type)121 public static String saveBitmap(Bitmap bitmap, String bitmapName, int type) throws IOException { 122 if (!isExternalStorageReady()) { 123 Log.i(TAG, "External storage for saving bitmaps is not mounted"); 124 return null; 125 } 126 127 File file = getBitmapPath(bitmapName, type); 128 File dir = file.getParentFile(); 129 dir.mkdirs(); 130 131 FileOutputStream stream = new FileOutputStream(file); 132 bitmap.compress(CompressFormat.PNG, 100, stream); 133 stream.close(); 134 return file.getAbsolutePath(); 135 } 136 } 137