1 files changed, 118 insertions, 0 deletions
diff --git a/src/com/android/magicsmoke/RenderScriptWallpaper.java b/src/com/android/magicsmoke/RenderScriptWallpaper.java
new file mode 100644
index 0000000..87c8729
--- /dev/null
+++ b/src/com/android/magicsmoke/RenderScriptWallpaper.java
@@ -0,0 +1,118 @@
+/*
+ * Copyright (C) 2009 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.magicsmoke;
+
+import android.service.wallpaper.WallpaperService;
+import android.renderscript.RenderScript;
+import android.util.Log;
+import android.view.MotionEvent;
+import android.view.SurfaceHolder;
+import android.view.Surface;
+
+public abstract class RenderScriptWallpaper<T extends RenderScriptScene> extends WallpaperService {
+    public Engine onCreateEngine() {
+        return new RenderScriptEngine();
+    }
+
+    protected abstract T createScene(int width, int height);
+
+    private class RenderScriptEngine extends Engine {
+        private RenderScript mRs;
+        private T mRenderer;
+
+        @Override
+        public void onCreate(SurfaceHolder surfaceHolder) {
+            super.onCreate(surfaceHolder);
+            setTouchEventsEnabled(true);
+            surfaceHolder.setSizeFromLayout();
+        }
+
+        @Override
+        public void onDestroy() {
+            super.onDestroy();
+            destroyRenderer();
+        }
+
+        private void destroyRenderer() {
+            if (mRenderer != null) {
+                mRenderer.stop();
+                mRenderer = null;
+            }
+            if (mRs != null) {
+                mRs.destroy();
+                mRs = null;
+            }            
+        }
+
+        @Override
+        public void onVisibilityChanged(boolean visible) {
+            super.onVisibilityChanged(visible);
+            if (mRenderer != null) {
+                if (visible) {
+                    mRenderer.start();                
+                } else {
+                    mRenderer.stop();
+                }
+            }
+        }
+
+        @Override
+        public void onSurfaceChanged(SurfaceHolder holder, int format, int width, int height) {
+            super.onSurfaceChanged(holder, format, width, height);
+            if (mRs != null) {
+                mRs.contextSetSurface(width, height, holder.getSurface());
+            }
+            if (mRenderer == null) {
+                mRenderer = createScene(width, height);
+                mRenderer.init(mRs, getResources(), isPreview());
+                mRenderer.start();
+            } else {
+                mRenderer.resize(width, height);
+            }
+        }
+
+        @Override
+        public void onTouchEvent(MotionEvent event) {
+            mRenderer.onTouchEvent(event);
+        }
+        
+        @Override
+        public void onOffsetsChanged(float xOffset, float yOffset,
+                float xStep, float yStep, int xPixels, int yPixels) {
+            mRenderer.setOffset(xOffset, yOffset, xStep, yStep, xPixels, yPixels);
+        }
+
+        @Override
+        public void onSurfaceCreated(SurfaceHolder holder) {
+            super.onSurfaceCreated(holder);
+
+            Surface surface = null;
+            while (surface == null) {
+                surface = holder.getSurface();
+            }
+            mRs = new RenderScript(false, false);
+            mRs.contextSetPriority(RenderScript.Priority.LOW);
+        }
+
+        @Override
+        public void onSurfaceDestroyed(SurfaceHolder holder) {
+            super.onSurfaceDestroyed(holder);
+            destroyRenderer();
+        }
+    }
+}