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/* 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.
*/
//
// PixelBufferImage is an PixelBuffer which also acts as an ImageProducer.
// Currently it only supports 8-bit colourmapped pixel format.
//
package com.tigervnc.vncviewer;
import java.awt.*;
import java.awt.image.*;
import java.nio.ByteOrder;
import com.tigervnc.rfb.*;
public class PixelBufferImage extends PixelBuffer
{
public PixelBufferImage(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.
public void resize(int w, int h) {
if (w == width() && h == height()) return;
width_ = w;
height_ = h;
switch (format.depth) {
case 3:
// Fall-through to depth 8
case 6:
// Fall-through to depth 8
case 8:
image = new BufferedImage(w, h, BufferedImage.TYPE_BYTE_INDEXED);
break;
default:
GraphicsEnvironment ge =
GraphicsEnvironment.getLocalGraphicsEnvironment();
GraphicsDevice gd = ge.getDefaultScreenDevice();
GraphicsConfiguration gc = gd.getDefaultConfiguration();
image = gc.createCompatibleImage(w, h, Transparency.OPAQUE);
break;
}
image.setAccelerationPriority(1);
graphics = image.createGraphics();
}
public PixelFormat getNativePF() {
PixelFormat pf;
cm = tk.getColorModel();
if (cm.getColorSpace().getType() == java.awt.color.ColorSpace.TYPE_RGB) {
int depth = 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;
}
public void fillRect(int x, int y, int w, int h, int pix) {
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;
}
}
public void imageRect(int x, int y, int w, int h, Object pix) {
if (pix instanceof java.awt.Image) {
graphics.drawImage((Image)pix, x, y, w, h, null);
} else {
Image img = tk.createImage(new MemoryImageSource(w, h, cm, (int[])pix, 0, w));
graphics.drawImage(img, x, y, w, h, null);
img.flush();
}
}
public void copyRect(int x, int y, int w, int h, int srcX, int srcY) {
graphics.copyArea(srcX, srcY, w, h, x - srcX, y - srcY);
}
// 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);
}
private static Toolkit tk = java.awt.Toolkit.getDefaultToolkit();
Graphics2D graphics;
BufferedImage image;
ImageConsumer ic;
int nColours;
byte[] reds;
byte[] greens;
byte[] blues;
CConn cc;
DesktopWindow desktop;
static LogWriter vlog = new LogWriter("PixelBufferImage");
}
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