java/com/tigervnc/vncviewer/BIPixelBuffer.java

/* Copyright (C) 2002-2005 RealVNC Ltd.  All Rights Reserved.
 * Copyright (C) 2011-2012 TigerVNC Team.
 * 
 * This 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 software 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 software; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,
 * USA.
 */

package com.tigervnc.vncviewer;

import java.awt.*;
import java.awt.image.*;

import com.tigervnc.rfb.*;
import com.tigervnc.rfb.Exception;

public class BIPixelBuffer extends PlatformPixelBuffer
{
  public BIPixelBuffer(int w, int h, CConn cc_, DesktopWindow desktop_) {
    super(w, h, cc_, desktop_);
  }

  // resize() resizes the image, preserving the image data where possible.
  public void resize(int w, int h) {
    if (w == width() && h == height()) return;

    width_ = w;
    height_ = h;
    GraphicsEnvironment ge =
      GraphicsEnvironment.getLocalGraphicsEnvironment();
    GraphicsDevice gd = ge.getDefaultScreenDevice();
    GraphicsConfiguration gc = gd.getDefaultConfiguration();
    image = gc.createCompatibleImage(w, h, Transparency.OPAQUE);
    image.setAccelerationPriority(1);
    image.createGraphics();
  }

  public void fillRect(int x, int y, int w, int h, int pix) {
    Graphics2D graphics = (Graphics2D)image.getGraphics();
    switch (format.depth) {
    case 24:
      graphics.setColor(new Color(pix)); 
      graphics.fillRect(x, y, w, h); 
      break;
    default:
      Color color = new Color((0xff << 24) | (cm.getRed(pix) << 16) |
                              (cm.getGreen(pix) << 8) | (cm.getBlue(pix)));
      graphics.setColor(color); 
      graphics.fillRect(x, y, w, h); 
      break;
    }
    graphics.dispose();
  }

  public void imageRect(int x, int y, int w, int h, Object pix) {
    Graphics2D graphics = (Graphics2D)image.getGraphics();
    Image img;
    if (pix instanceof Image) {
      img = (Image)pix;
    } else {
      img = tk.createImage(new MemoryImageSource(w, h, cm, (int[])pix, 0, w));
      img.setAccelerationPriority(1);
    }
    boolean ret = tk.prepareImage(img, -1, -1, null);
    if (!ret) {
      while ((tk.checkImage(img, -1, -1, null) & ImageObserver.ALLBITS) == 0) {
        synchronized (this) {
          try {
            this.wait(0, 10000);
          } catch (InterruptedException e) {
            throw new Exception("Error decoding JPEG data");
          }
        }
      }
    } 
    graphics.drawImage(img, x, y, w, h, null); 
    graphics.dispose();
    img.flush();
  }

  public void copyRect(int x, int y, int w, int h, int srcX, int srcY) {
    Graphics2D graphics = (Graphics2D)image.getGraphics();
    graphics.copyArea(srcX, srcY, w, h, x - srcX, y - srcY);
    graphics.dispose();
  }

  public Image getImage() {
    return (Image)image;
  }

  BufferedImage image;

  static LogWriter vlog = new LogWriter("BIPixelBuffer");
}