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/*
* Copyright (C) 2000 heXoNet Support GmbH, D-66424 Homburg.
* All Rights Reserved.
*
* 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.
*/
#ifndef _hexonet_rfb_XUpdateScanner_h_
#define _hexonet_rfb_XUpdateScanner_h_
#include <tqptrlist.h>
#include <X11/Xlib.h>
#include <X11/extensions/XShm.h>
class Hint {
public:
int x, y, w, h;
Hint() :
x(0),
y(0),
w(0),
h(0)
{}
Hint(Hint &h) :
x(h.x),
y(h.y),
w(h.w),
h(h.h)
{
}
int left() {
return x;
}
int right() {
return x+w;
}
int top() {
return y;
}
int bottom() {
return y+h;
}
};
struct TileChangeRegion {
short firstLine, lastLine;
};
class XUpdateScanner
{
public:
XUpdateScanner( Display *_dpy,
Window _window,
unsigned char *_fb,
int _width, int _height,
int _bitsPerPixel, int _bytesPerLine,
bool useXShm);
~XUpdateScanner();
// hitList: returns list of changes
// ptrY: ptrY: position of the cursor
void searchUpdates( TQPtrList<Hint> &hintList, int ptrY);
private:
void testScanline(int y, bool rememberHits);
bool copyTile(int x, int y, int tx, int ty);
void copyAllTiles();
void flushHint(int x, int y, int &x0, Hint &hint,
TQPtrList<Hint> &hintList);
void createHints(TQPtrList<Hint> &hintList);
void addTileToHint(int x, int y, int th, Hint &hint);
void createHintFromTile(int x, int y, int th, Hint &hint);
Display *dpy;
Window window;
unsigned char *fb;
int width, height;
int bitsPerPixel, bytesPerLine;
unsigned int tileWidth, tileHeight;
unsigned int count;
bool useShm;
XImage *scanline;
XShmSegmentInfo shminfo_scanline;
XImage *tile;
XShmSegmentInfo shminfo_tile;
unsigned int tilesX, tilesY;
bool *tileMap;
struct TileChangeRegion *tileRegionMap;
};
#endif // _hexonet_rfb_XUpdateScanner_h_
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