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 com.android.gallery3d.gadget; 18 19 import android.content.Context; 20 import android.content.res.Resources; 21 import android.graphics.Bitmap; 22 import android.graphics.Bitmap.Config; 23 import android.graphics.Canvas; 24 import android.graphics.Paint; 25 import android.util.Log; 26 27 import com.android.gallery3d.R; 28 import com.android.gallery3d.data.MediaItem; 29 import com.android.gallery3d.util.ThreadPool; 30 31 public class WidgetUtils { 32 33 private static final String TAG = "WidgetUtils"; 34 35 private static int sStackPhotoWidth = 220; 36 private static int sStackPhotoHeight = 170; 37 38 private WidgetUtils() { 39 } 40 41 public static void initialize(Context context) { 42 Resources r = context.getResources(); 43 sStackPhotoWidth = r.getDimensionPixelSize(R.dimen.stack_photo_width); 44 sStackPhotoHeight = r.getDimensionPixelSize(R.dimen.stack_photo_height); 45 } 46 47 public static Bitmap createWidgetBitmap(MediaItem image) { 48 Bitmap bitmap = image.requestImage(MediaItem.TYPE_THUMBNAIL) 49 .run(ThreadPool.JOB_CONTEXT_STUB); 50 if (bitmap == null) { 51 Log.w(TAG, "fail to get image of " + image.toString()); 52 return null; 53 } 54 return createWidgetBitmap(bitmap, image.getRotation()); 55 } 56 57 public static Bitmap createWidgetBitmap(Bitmap bitmap, int rotation) { 58 int w = bitmap.getWidth(); 59 int h = bitmap.getHeight(); 60 61 float scale; 62 if (((rotation / 90) & 1) == 0) { 63 scale = Math.max((float) sStackPhotoWidth / w, 64 (float) sStackPhotoHeight / h); 65 } else { 66 scale = Math.max((float) sStackPhotoWidth / h, 67 (float) sStackPhotoHeight / w); 68 } 69 70 Bitmap target = Bitmap.createBitmap( 71 sStackPhotoWidth, sStackPhotoHeight, Config.ARGB_8888); 72 Canvas canvas = new Canvas(target); 73 canvas.translate(sStackPhotoWidth / 2, sStackPhotoHeight / 2); 74 canvas.rotate(rotation); 75 canvas.scale(scale, scale); 76 Paint paint = new Paint(Paint.FILTER_BITMAP_FLAG | Paint.DITHER_FLAG); 77 canvas.drawBitmap(bitmap, -w / 2, -h / 2, paint); 78 return target; 79 } 80 } 81
