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      1 /*
      2  * Copyright (C) 2010 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.camera.ui;
     18 
     19 import android.content.Context;
     20 import android.graphics.Bitmap;
     21 import android.graphics.BitmapFactory;
     22 import android.graphics.Rect;
     23 
     24 class NinePatchTexture extends ResourceTexture {
     25     private NinePatchChunk mChunk;
     26 
     27     public NinePatchTexture(Context context, int resId) {
     28         super(context, resId);
     29     }
     30 
     31     @Override
     32     protected Bitmap getBitmap() {
     33         if (mBitmap != null) return mBitmap;
     34 
     35         BitmapFactory.Options options = new BitmapFactory.Options();
     36         options.inPreferredConfig = Bitmap.Config.ARGB_8888;
     37         Bitmap bitmap = BitmapFactory.decodeResource(
     38                 mContext.getResources(), mResId, options);
     39         mBitmap = bitmap;
     40         setSize(bitmap.getWidth(), bitmap.getHeight());
     41         mChunk = NinePatchChunk.deserialize(bitmap.getNinePatchChunk());
     42         if (mChunk == null) {
     43             throw new RuntimeException("invalid nine-patch image: " + mResId);
     44         }
     45         return bitmap;
     46     }
     47 
     48     public Rect getPaddings() {
     49         // get the paddings from nine patch
     50         if (mChunk == null) getBitmap();
     51         return mChunk.mPaddings;
     52     }
     53 
     54     public NinePatchChunk getNinePatchChunk() {
     55         if (mChunk == null) getBitmap();
     56         return mChunk;
     57     }
     58 
     59     @Override
     60     public void draw(GLRootView root, int x, int y, int w, int h) {
     61         root.drawNinePatch(this, x, y, w, h);
     62     }
     63 }
     64