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Android example source code file (RSSurfaceView.java)

This example Android source code file (RSSurfaceView.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Android by Example" TM.

Java - Android tags/keywords

android, attributeset, os, override, renderscriptgl, rssurfaceview, surfaceholder, ui, util, utilities, utils, view

The RSSurfaceView.java Android example source code

/*
 * Copyright (C) 2008 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 android.renderscript;

import java.io.Writer;
import java.util.ArrayList;
import java.util.concurrent.Semaphore;

import android.content.Context;
import android.os.Handler;
import android.os.Message;
import android.util.AttributeSet;
import android.util.Log;
import android.util.Log;
import android.view.Surface;
import android.view.SurfaceHolder;
import android.view.SurfaceView;

/**
 * @hide
 *
 **/
public class RSSurfaceView extends SurfaceView implements SurfaceHolder.Callback {
    private SurfaceHolder mSurfaceHolder;
    private RenderScriptGL mRS;

    /**
     * Standard View constructor. In order to render something, you
     * must call {@link #setRenderer} to register a renderer.
     */
    public RSSurfaceView(Context context) {
        super(context);
        init();
        //Log.v(RenderScript.LOG_TAG, "RSSurfaceView");
    }

    /**
     * Standard View constructor. In order to render something, you
     * must call {@link #setRenderer} to register a renderer.
     */
    public RSSurfaceView(Context context, AttributeSet attrs) {
        super(context, attrs);
        init();
        //Log.v(RenderScript.LOG_TAG, "RSSurfaceView");
    }

    private void init() {
        // Install a SurfaceHolder.Callback so we get notified when the
        // underlying surface is created and destroyed
        SurfaceHolder holder = getHolder();
        holder.addCallback(this);
    }

    /**
     * This method is part of the SurfaceHolder.Callback interface, and is
     * not normally called or subclassed by clients of RSSurfaceView.
     */
    public void surfaceCreated(SurfaceHolder holder) {
        Log.v(RenderScript.LOG_TAG, "surfaceCreated");
        mSurfaceHolder = holder;
    }

    /**
     * This method is part of the SurfaceHolder.Callback interface, and is
     * not normally called or subclassed by clients of RSSurfaceView.
     */
    public void surfaceDestroyed(SurfaceHolder holder) {
        // Surface will be destroyed when we return
        Log.v(RenderScript.LOG_TAG, "surfaceDestroyed");
        if (mRS != null) {
            mRS.contextSetSurface(0, 0, null);
        }
    }

    /**
     * This method is part of the SurfaceHolder.Callback interface, and is
     * not normally called or subclassed by clients of RSSurfaceView.
     */
    public void surfaceChanged(SurfaceHolder holder, int format, int w, int h) {
        Log.v(RenderScript.LOG_TAG, "surfaceChanged");
        if (mRS != null) {
            mRS.contextSetSurface(w, h, holder.getSurface());
        }
    }

    /**
     * Inform the view that the activity is paused. The owner of this view must
     * call this method when the activity is paused. Calling this method will
     * pause the rendering thread.
     * Must not be called before a renderer has been set.
     */
    public void onPause() {
        if(mRS != null) {
            mRS.pause();
        }
        //Log.v(RenderScript.LOG_TAG, "onPause");
    }

    /**
     * Inform the view that the activity is resumed. The owner of this view must
     * call this method when the activity is resumed. Calling this method will
     * recreate the OpenGL display and resume the rendering
     * thread.
     * Must not be called before a renderer has been set.
     */
    public void onResume() {
        if(mRS != null) {
            mRS.resume();
        }
        //Log.v(RenderScript.LOG_TAG, "onResume");
    }

    /**
     * Queue a runnable to be run on the GL rendering thread. This can be used
     * to communicate with the Renderer on the rendering thread.
     * Must not be called before a renderer has been set.
     * @param r the runnable to be run on the GL rendering thread.
     */
    public void queueEvent(Runnable r) {
        //Log.v(RenderScript.LOG_TAG, "queueEvent");
    }

    /**
     * This method is used as part of the View class and is not normally
     * called or subclassed by clients of RSSurfaceView.
     * Must not be called before a renderer has been set.
     */
    @Override
    protected void onDetachedFromWindow() {
        super.onDetachedFromWindow();
    }

    // ----------------------------------------------------------------------

    public RenderScriptGL createRenderScript(boolean useDepth, boolean forceSW) {
        Log.v(RenderScript.LOG_TAG, "createRenderScript");
        mRS = new RenderScriptGL(useDepth, forceSW);
        return mRS;
    }

    public RenderScriptGL createRenderScript(boolean useDepth) {
        return createRenderScript(useDepth, false);
    }

    public void destroyRenderScript() {
        Log.v(RenderScript.LOG_TAG, "destroyRenderScript");
        mRS.destroy();
        mRS = null;
    }
    
    public void createRenderScript(RenderScriptGL rs) {
        mRS = rs;
    }
}

Other Android examples (source code examples)

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