diff options
Diffstat (limited to 'src/com/android/gallery3d/widget/WidgetUtils.java')
-rw-r--r-- | src/com/android/gallery3d/widget/WidgetUtils.java | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/src/com/android/gallery3d/widget/WidgetUtils.java b/src/com/android/gallery3d/widget/WidgetUtils.java new file mode 100644 index 000000000..481bbddbc --- /dev/null +++ b/src/com/android/gallery3d/widget/WidgetUtils.java @@ -0,0 +1,80 @@ +/* + * Copyright (C) 2011 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package com.android.gallery3d.widget; + +import com.android.gallery3d.R; +import com.android.gallery3d.data.MediaItem; +import com.android.gallery3d.util.ThreadPool; + +import android.content.Context; +import android.content.res.Resources; +import android.graphics.Bitmap; +import android.graphics.Canvas; +import android.graphics.Paint; +import android.graphics.Bitmap.Config; +import android.util.Log; + +public class WidgetUtils { + + private static final String TAG = "WidgetUtils"; + + private static int sStackPhotoWidth = 220; + private static int sStackPhotoHeight = 170; + + private WidgetUtils() { + } + + public static void initialize(Context context) { + Resources r = context.getResources(); + sStackPhotoWidth = r.getDimensionPixelSize(R.dimen.stack_photo_width); + sStackPhotoHeight = r.getDimensionPixelSize(R.dimen.stack_photo_height); + } + + public static Bitmap createWidgetBitmap(MediaItem image) { + Bitmap bitmap = image.requestImage(MediaItem.TYPE_THUMBNAIL) + .run(ThreadPool.JOB_CONTEXT_STUB); + if (bitmap == null) { + Log.w(TAG, "fail to get image of " + image.toString()); + return null; + } + return createWidgetBitmap(bitmap, image.getRotation()); + } + + public static Bitmap createWidgetBitmap(Bitmap bitmap, int rotation) { + int w = bitmap.getWidth(); + int h = bitmap.getHeight(); + + float scale; + if (((rotation / 90) & 1) == 0) { + scale = Math.max((float) sStackPhotoWidth / w, + (float) sStackPhotoHeight / h); + } else { + scale = Math.max((float) sStackPhotoWidth / h, + (float) sStackPhotoHeight / w); + } + + Bitmap target = Bitmap.createBitmap( + sStackPhotoWidth, sStackPhotoHeight, Config.ARGB_8888); + Canvas canvas = new Canvas(target); + canvas.translate(sStackPhotoWidth / 2, sStackPhotoHeight / 2); + canvas.rotate(rotation); + canvas.scale(scale, scale); + Paint paint = new Paint(Paint.FILTER_BITMAP_FLAG | Paint.DITHER_FLAG); + canvas.drawBitmap(bitmap, -w / 2, -h / 2, paint); + return target; + } +} |