GLWallpaperService.java

/*
 * Copyright (C) Winson Chiu
 *
 * 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 cw.kop.autobackground;

import android.content.Context;
import android.opengl.GLSurfaceView;
import android.service.wallpaper.WallpaperService;
import android.view.SurfaceHolder;

public abstract class GLWallpaperService extends WallpaperService {

    public class GLEngine extends Engine {

        private WallpaperGLSurfaceView glSurfaceView;
        private boolean rendererHasBeenSet;

        @Override
        public void onCreate(SurfaceHolder surfaceHolder) {
            super.onCreate(surfaceHolder);
            glSurfaceView = new WallpaperGLSurfaceView(GLWallpaperService.this);
        }

        @Override
        public void onDestroy() {
            super.onDestroy();
            glSurfaceView.onDestroy();
        }

        protected void setRenderer(GLSurfaceView.Renderer renderer) {
            glSurfaceView.setEGLConfigChooser(8, 8, 8, 8, 16, 0);
            glSurfaceView.setRenderer(renderer);
            rendererHasBeenSet = true;
        }

        protected void setRendererMode(int mode) {
            glSurfaceView.setRenderMode(mode);
        }

        protected void render() {
            glSurfaceView.requestRender();
        }

        protected void addEvent(Runnable runnable) {
            glSurfaceView.queueEvent(runnable);
        }

        protected void setEGLContextClientVersion(int version) {
            glSurfaceView.setEGLContextClientVersion(version);
        }

        protected void setPreserveEGLContextOnPause(boolean preserve) {
            glSurfaceView.setPreserveEGLContextOnPause(preserve);
        }

        public void pause() {
            if (rendererHasBeenSet) {
                glSurfaceView.onPause();
            }
        }

        public void resume() {
            if (rendererHasBeenSet) {
                glSurfaceView.onResume();
            }
        }

        class WallpaperGLSurfaceView extends GLSurfaceView {

            WallpaperGLSurfaceView(Context context) {
                super(context);
            }

            @Override
            public SurfaceHolder getHolder() {
                return getSurfaceHolder();
            }

            public void onDestroy() {
                super.onDetachedFromWindow();
            }
        }

    }

}