// Copyright (C) 2010, 2011, 2012, 2013 GlavSoft LLC.
// All rights reserved.
//
//-------------------------------------------------------------------------
// This file is part of the TightVNC software.  Please visit our Web site:
//
//                       http://www.tightvnc.com/
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License along
// with this program; if not, write to the Free Software Foundation, Inc.,
// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
//-------------------------------------------------------------------------
//

package com.glavsoft.viewer.swing;

import com.glavsoft.drawing.Renderer;
import com.glavsoft.rfb.encoding.PixelFormat;
import com.glavsoft.rfb.encoding.decoder.FramebufferUpdateRectangle;
import com.glavsoft.transport.Reader;

import java.awt.*;
import java.awt.image.*;
import java.util.concurrent.BrokenBarrierException;
import java.util.concurrent.CyclicBarrier;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;

public class RendererImpl extends Renderer implements ImageObserver {
    CyclicBarrier barrier = new CyclicBarrier(2);
	private final Image offscreanImage;

	public RendererImpl(Reader reader, int width, int height, PixelFormat pixelFormat) {
		if (0 == width) width = 1;
		if (0 == height) height = 1;
		init(reader, width, height, pixelFormat);
		ColorModel colorModel = new DirectColorModel(24, 0xff0000, 0xff00, 0xff);
		SampleModel sampleModel = colorModel.createCompatibleSampleModel(width,
				height);

		DataBuffer dataBuffer = new DataBufferInt(pixels, width * height);
		WritableRaster raster = Raster.createWritableRaster(sampleModel,
				dataBuffer, null);
		offscreanImage = new BufferedImage(colorModel, raster, false, null);
		cursor = new SoftCursorImpl(0, 0, 0, 0);
	}

	/**
	 * Draw jpeg image data
	 *
	 * @param bytes jpeg image data array
	 * @param offset start offset at data array
	 * @param jpegBufferLength jpeg image data array length
	 * @param rect image location and dimensions
	 */
	@Override
	public void drawJpegImage(byte[] bytes, int offset, int jpegBufferLength,
			FramebufferUpdateRectangle rect) {
		Image jpegImage = Toolkit.getDefaultToolkit().createImage(bytes,
				offset, jpegBufferLength);
		Toolkit.getDefaultToolkit().prepareImage(jpegImage, -1, -1, this);
		try {
			barrier.await(3, TimeUnit.SECONDS);
		} catch (InterruptedException e) {
			// nop
		} catch (BrokenBarrierException e) {
			// nop
		} catch (TimeoutException e) {
			// nop
		}
		Graphics graphics = offscreanImage.getGraphics();
		graphics.drawImage(jpegImage, rect.x, rect.y, rect.width, rect.height, this);
	}

	@Override
	public boolean imageUpdate(Image img, int infoflags, int x, int y,
			int width, int height) {
		boolean isReady = (infoflags & (ALLBITS | ABORT)) != 0;
		if (isReady) {
			try {
				barrier.await();
			} catch (InterruptedException e) {
				// nop
			} catch (BrokenBarrierException e) {
				// nop
			}
		}
		return ! isReady;
	}

	/* Swing specific interface */
	public Image getOffscreenImage() {
		return offscreanImage;
	}

	public SoftCursorImpl getCursor() {
		return (SoftCursorImpl) cursor;
	}

}