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.gallery3d.glrenderer;
18 
19 
20 // Texture is a rectangular image which can be drawn on GLCanvas.
21 // The isOpaque() function gives a hint about whether the texture is opaque,
22 // so the drawing can be done faster.
23 //
24 // This is the current texture hierarchy:
25 //
26 // Texture
27 // -- ColorTexture
28 // -- FadeInTexture
29 // -- BasicTexture
30 //    -- UploadedTexture
31 //       -- BitmapTexture
32 //       -- Tile
33 //       -- ResourceTexture
34 //          -- NinePatchTexture
35 //       -- CanvasTexture
36 //          -- StringTexture
37 //
38 public interface Texture {
getWidth()39     public int getWidth();
getHeight()40     public int getHeight();
draw(GLCanvas canvas, int x, int y)41     public void draw(GLCanvas canvas, int x, int y);
draw(GLCanvas canvas, int x, int y, int w, int h)42     public void draw(GLCanvas canvas, int x, int y, int w, int h);
isOpaque()43     public boolean isOpaque();
44 }
45