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examples / src / main / java / org / distorted / examples / plainmonalisa / PlainMonaLisaSurfaceView.java @ f6d884d5

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///////////////////////////////////////////////////////////////////////////////////////////////////
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// Copyright 2016 Leszek Koltunski                                                               //
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//                                                                                               //
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// This file is part of Distorted.                                                               //
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//                                                                                               //
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// Distorted is free software: you can redistribute it and/or modify                             //
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// it under the terms of the GNU General Public License as published by                          //
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// the Free Software Foundation, either version 2 of the License, or                             //
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// (at your option) any later version.                                                           //
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//                                                                                               //
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// Distorted is distributed in the hope that it will be useful,                                  //
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// but WITHOUT ANY WARRANTY; without even the implied warranty of                                //
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the                                 //
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// GNU General Public License for more details.                                                  //
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//                                                                                               //
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// You should have received a copy of the GNU General Public License                             //
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// along with Distorted.  If not, see <http://www.gnu.org/licenses/>.                            //
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///////////////////////////////////////////////////////////////////////////////////////////////////
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package org.distorted.examples.plainmonalisa;
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import android.content.Context;
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import android.view.Choreographer;
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import android.view.SurfaceView;
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import android.view.SurfaceHolder;
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import android.util.Log;
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///////////////////////////////////////////////////////////////////////////////////////////////////
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class PlainMonaLisaSurfaceView extends SurfaceView implements SurfaceHolder.Callback, Choreographer.FrameCallback
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  {
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  private static final String TAG = "MonaLisaSurface";
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  private RenderThread mRenderThread;
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  private static volatile boolean mPaused = true;
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///////////////////////////////////////////////////////////////////////////////////////////////////
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  public PlainMonaLisaSurfaceView(Context context)
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    {
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    super(context);
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    getHolder().addCallback(this);
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    }
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///////////////////////////////////////////////////////////////////////////////////////////////////
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  public void surfaceCreated(SurfaceHolder holder)
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    {
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    Log.d(TAG, "surfaceCreated holder=" + holder);
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    mRenderThread = new RenderThread(holder, this);
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    mRenderThread.setName("GL render");
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    mRenderThread.start();
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    mRenderThread.waitUntilReady();
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    RenderHandler rh = mRenderThread.getHandler();
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    if (rh != null)
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      {
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      rh.sendSurfaceCreated();
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      }
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    Choreographer.getInstance().postFrameCallback(this);
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    }
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///////////////////////////////////////////////////////////////////////////////////////////////////
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  public void surfaceChanged(SurfaceHolder holder, int format, int width, int height)
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    {
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    Log.d(TAG, "surfaceChanged fmt=" + format + " size=" + width + "x" + height +" holder=" + holder);
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    RenderHandler rh = mRenderThread.getHandler();
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    if (rh != null)
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      {
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      rh.sendSurfaceChanged(format, width, height);
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      }
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    }
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///////////////////////////////////////////////////////////////////////////////////////////////////
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  public void surfaceDestroyed(SurfaceHolder holder)
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    {
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    Log.d(TAG, "surfaceDestroyed holder=" + holder);
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    // We need to wait for the render thread to shut down before continuing because we
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    // don't want the Surface to disappear out from under it mid-render.  The frame
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    // notifications will have been stopped back in onPause(), but there might have
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    // been one in progress.
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    RenderHandler rh = mRenderThread.getHandler();
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    if (rh != null)
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      {
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      rh.sendShutdown();
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      try
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        {
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        mRenderThread.join();
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        }
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      catch (InterruptedException ie)
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        {
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        throw new RuntimeException("join was interrupted", ie);
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        }
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      }
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    mRenderThread = null;
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    Log.d(TAG, "surfaceDestroyed complete");
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    }
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///////////////////////////////////////////////////////////////////////////////////////////////////
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  public void onPause()
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    {
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    mPaused = true;
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    Log.d(TAG, "onPause unhooking choreographer");
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    Choreographer.getInstance().removeFrameCallback(this);
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    }
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///////////////////////////////////////////////////////////////////////////////////////////////////
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  public void onResume()
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    {
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    mPaused = false;
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    if (mRenderThread != null)
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      {
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      Log.d(TAG, "onResume re-hooking choreographer");
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      Choreographer.getInstance().postFrameCallback(this);
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      }
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    }
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///////////////////////////////////////////////////////////////////////////////////////////////////
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  public static boolean isPaused()
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    {
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    return mPaused;
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    }
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///////////////////////////////////////////////////////////////////////////////////////////////////
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  @Override
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  public void doFrame(long frameTimeNanos)
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    {
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    RenderHandler rh = mRenderThread.getHandler();
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    if (rh != null)
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      {
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      Choreographer.getInstance().postFrameCallback(this);
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      rh.sendDoFrame(frameTimeNanos);
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      }
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    }
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  }
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