com.tigervnc.vncviewer.PlatformPixelBuffer Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of sikulix2tigervnc Show documentation
... for visual testing and automation (TigerVNC support)
The newest version!
/* Copyright (C) 2002-2005 RealVNC Ltd.  All Rights Reserved.
 * Copyright (C) 2011-2012 Brian P.Hinz
 *
 * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
 * USA.
 */

package com.tigervnc.vncviewer;

import java.awt.*;
import java.awt.image.*;
import java.nio.ByteOrder;

import com.tigervnc.rfb.*;

abstract public class PlatformPixelBuffer extends PixelBuffer
{
  public PlatformPixelBuffer(int w, int h, CConn cc_, DesktopWindow desktop_) {
    cc = cc_;
    desktop = desktop_;
    PixelFormat nativePF = getNativePF();
    if (nativePF.depth > cc.serverPF.depth) {
      setPF(cc.serverPF);
    } else {
      setPF(nativePF);
    }
    resize(w, h);
  }

  // resize() resizes the image, preserving the image data where possible.
  abstract public void resize(int w, int h);

  public PixelFormat getNativePF() {
    PixelFormat pf;
    cm = tk.getColorModel();
    if (cm.getColorSpace().getType() == java.awt.color.ColorSpace.TYPE_RGB) {
      int depth = ((cm.getPixelSize() > 24) ? 24 : cm.getPixelSize());
      int bpp = (depth > 16 ? 32 : (depth > 8 ? 16 : 8));
      ByteOrder byteOrder = ByteOrder.nativeOrder();
      boolean bigEndian = (byteOrder == ByteOrder.BIG_ENDIAN ? true : false);
      boolean trueColour = (depth > 8 ? true : false);
      int redShift    = cm.getComponentSize()[0] + cm.getComponentSize()[1];
      int greenShift  = cm.getComponentSize()[0];
      int blueShift   = 0;
      pf = new PixelFormat(bpp, depth, bigEndian, trueColour,
        (depth > 8 ? 0xff : 0),
        (depth > 8 ? 0xff : 0),
        (depth > 8 ? 0xff : 0),
        (depth > 8 ? redShift : 0),
        (depth > 8 ? greenShift : 0),
        (depth > 8 ? blueShift : 0));
    } else {
      pf = new PixelFormat(8, 8, false, false, 7, 7, 3, 0, 3, 6);
    }
    vlog.debug("Native pixel format is "+pf.print());
    return pf;
  }

  abstract public void imageRect(int x, int y, int w, int h, Object pix);

  // setColourMapEntries() changes some of the entries in the colourmap.
  // However these settings won't take effect until updateColourMap() is
  // called.  This is because getting java to recalculate its internal
  // translation table and redraw the screen is expensive.

  public void setColourMapEntries(int firstColour, int nColours_,
                                               int[] rgbs) {
    nColours = nColours_;
    reds = new byte[nColours];
    blues = new byte[nColours];
    greens = new byte[nColours];
    for (int i = 0; i < nColours; i++) {
      reds[firstColour+i] = (byte)(rgbs[i*3]   >> 8);
      greens[firstColour+i] = (byte)(rgbs[i*3+1] >> 8);
      blues[firstColour+i] = (byte)(rgbs[i*3+2] >> 8);
    }
  }

  public void updateColourMap() {
    cm = new IndexColorModel(8, nColours, reds, greens, blues);
  }

  protected static Toolkit tk = Toolkit.getDefaultToolkit();

  abstract public Image getImage();

  protected Image image;

  int nColours;
  byte[] reds;
  byte[] greens;
  byte[] blues;

  CConn cc;
  DesktopWindow desktop;
  static LogWriter vlog = new LogWriter("PlatformPixelBuffer");
}