src/com/android/gallery3d/ui/Texture.java

/*
 * Copyright (C) 2010 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.ui;

// Texture is a rectangular image which can be drawn on GLCanvas.
// The isOpaque() function gives a hint about whether the texture is opaque,
// so the drawing can be done faster.
//
// This is the current texture hierarchy:
//
// Texture
// -- ColorTexture
// -- FadeInTexture
// -- BasicTexture
//    -- UploadedTexture
//       -- BitmapTexture
//       -- Tile
//       -- ResourceTexture
//          -- NinePatchTexture
//       -- CanvasTexture
//          -- StringTexture
//
public interface Texture {
    public int getWidth();
    public int getHeight();
    public void draw(GLCanvas canvas, int x, int y);
    public void draw(GLCanvas canvas, int x, int y, int w, int h);
    public boolean isOpaque();
}