| package com.android.noisefield; |
| |
| import android.app.Service; |
| import android.graphics.PixelFormat; |
| import android.os.Bundle; |
| import android.renderscript.RenderScript; |
| import android.renderscript.RenderScriptGL; |
| import android.service.wallpaper.WallpaperService; |
| import android.service.wallpaper.WallpaperService.Engine; |
| import android.util.DisplayMetrics; |
| import android.view.SurfaceHolder; |
| import android.view.WindowManager; |
| import android.util.Log; |
| import android.view.MotionEvent; |
| |
| public class NoiseFieldWallpaper extends WallpaperService { |
| |
| @Override |
| public Engine onCreateEngine() { |
| return new RenderScriptEngine(); |
| } |
| |
| private class RenderScriptEngine extends Engine { |
| private RenderScriptGL mRenderScript = null; |
| private NoiseFieldRS mWallpaperRS = null; |
| private int mDensityDPI; |
| |
| @Override |
| public void onCreate(SurfaceHolder surfaceHolder) { |
| super.onCreate(surfaceHolder); |
| setTouchEventsEnabled(true); |
| surfaceHolder.setSizeFromLayout(); |
| surfaceHolder.setFormat(PixelFormat.RGB_888); |
| |
| DisplayMetrics metrics = new DisplayMetrics(); |
| ((WindowManager) getApplication().getSystemService(Service.WINDOW_SERVICE)) |
| .getDefaultDisplay().getMetrics(metrics); |
| mDensityDPI = metrics.densityDpi; |
| } |
| |
| @Override |
| public void onDestroy() { |
| super.onDestroy(); |
| destroyRenderer(); |
| } |
| |
| public void destroyRenderer() { |
| if (mWallpaperRS != null) { |
| mWallpaperRS.stop(); |
| mWallpaperRS = null; |
| } |
| |
| if (mRenderScript != null) { |
| mRenderScript.setSurface(null, 0, 0); |
| mRenderScript.destroy(); |
| mRenderScript = null; |
| } |
| } |
| |
| @Override |
| public void onSurfaceCreated(SurfaceHolder surfaceHolder) { |
| super.onSurfaceCreated(surfaceHolder); |
| |
| RenderScriptGL.SurfaceConfig sc = new RenderScriptGL.SurfaceConfig(); |
| mRenderScript = new RenderScriptGL(NoiseFieldWallpaper.this, sc); |
| mRenderScript.setPriority(RenderScript.Priority.LOW); |
| } |
| |
| @Override |
| public void onSurfaceDestroyed(SurfaceHolder surfaceHolder) { |
| super.onSurfaceDestroyed(surfaceHolder); |
| destroyRenderer(); |
| } |
| |
| @Override |
| public void onSurfaceChanged(SurfaceHolder surfaceHolder, |
| int format, |
| int width, |
| int height) { |
| super.onSurfaceChanged(surfaceHolder, format, width, height); |
| |
| if (mRenderScript != null) { |
| mRenderScript.setSurface(surfaceHolder, width, height); |
| } |
| |
| if (mWallpaperRS == null) { |
| mWallpaperRS = new NoiseFieldRS(); |
| mWallpaperRS.init(mDensityDPI, mRenderScript, getResources(), width, height); |
| mWallpaperRS.start(); |
| } |
| |
| mWallpaperRS.resize(width, height); |
| } |
| |
| @Override |
| public void onTouchEvent(MotionEvent ev) { |
| super.onTouchEvent(ev); |
| if (mWallpaperRS != null) { |
| mWallpaperRS.onTouchEvent(ev); |
| } |
| } |
| |
| @Override |
| public void onVisibilityChanged(boolean visible) { |
| super.onVisibilityChanged(visible); |
| if (mWallpaperRS != null) { |
| if (visible) { |
| mWallpaperRS.start(); |
| } else { |
| mWallpaperRS.stop(); |
| } |
| } |
| } |
| } |
| } |