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      1 /*
      2  * Copyright (C) 2012 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 package com.android.gallery3d.ui;
     17 
     18 import android.graphics.RectF;
     19 
     20 import com.android.gallery3d.glrenderer.GLCanvas;
     21 
     22 public interface ScreenNail {
     23     public int getWidth();
     24     public int getHeight();
     25     public void draw(GLCanvas canvas, int x, int y, int width, int height);
     26 
     27     // We do not need to draw this ScreenNail in this frame.
     28     public void noDraw();
     29 
     30     // This ScreenNail will not be used anymore. Release related resources.
     31     public void recycle();
     32 
     33     // This is only used by TileImageView to back up the tiles not yet loaded.
     34     public void draw(GLCanvas canvas, RectF source, RectF dest);
     35 }
     36