ClientConnectionCoRRE.cpp
资源名称:vnc3326s.zip [点击查看]
上传用户:sbftbdw
上传日期:2007-01-03
资源大小:379k
文件大小:3k
源码类别:
远程控制编程
开发平台:
Visual C++
- // Copyright (C) 1997, 1998 Olivetti & Oracle Research Laboratory
- //
- // This file is part of the VNC system.
- //
- // The VNC system 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
- // USA.
- //
- // If the source code for the VNC system is not available from the place
- // whence you received this file, check http://www.orl.co.uk/vnc or contact
- // the authors on vnc@orl.co.uk for information on obtaining it.
- // CoRRE (Compact Rising Rectangle Encoding)
- //
- // The bits of the ClientConnection object to do with CoRRE.
- #include "stdhdrs.h"
- #include "vncviewer.h"
- #include "ClientConnection.h"
- void ClientConnection::ReadCoRRERect(rfbFramebufferUpdateRectHeader *pfburh)
- {
- // An RRE rect is always followed by a background color
- // For speed's sake we read them together into a buffer.
- char tmpbuf[sz_rfbRREHeader+4]; // biggest pixel is 4 bytes long
- rfbRREHeader *prreh = (rfbRREHeader *) tmpbuf;
- CARD8 *pcolor = (CARD8 *) tmpbuf + sz_rfbRREHeader;
- ReadExact(tmpbuf, sz_rfbRREHeader + m_minPixelBytes);
- prreh->nSubrects = Swap32IfLE(prreh->nSubrects);
- SETUP_COLOR_SHORTCUTS;
- COLORREF color;
- switch (m_myFormat.bitsPerPixel) {
- case 8:
- color = COLOR_FROM_PIXEL8_ADDRESS(pcolor); break;
- case 16:
- color = COLOR_FROM_PIXEL16_ADDRESS(pcolor); break;
- case 24:
- case 32:
- color = COLOR_FROM_PIXEL32_ADDRESS(pcolor); break;
- }
- // Draw the background of the rectangle
- FillSolidRect(pfburh->r.x, pfburh->r.y, pfburh->r.w, pfburh->r.h, color);
- if (prreh->nSubrects == 0) return;
- // Draw the sub-rectangles
- rfbCoRRERectangle *pRect;
- rfbRectangle rect;
- // The size of an CoRRE subrect including color info
- int subRectSize = m_minPixelBytes + sz_rfbCoRRERectangle;
- // Read subrects into the buffer
- CheckBufferSize(subRectSize * prreh->nSubrects);
- ReadExact(m_netbuf, subRectSize * prreh->nSubrects);
- BYTE *p = (BYTE *) m_netbuf;
- for (CARD32 i = 0; i < prreh->nSubrects; i++) {
- pRect = (rfbCoRRERectangle *) (p + m_minPixelBytes);
- switch (m_myFormat.bitsPerPixel) {
- case 8:
- color = COLOR_FROM_PIXEL8_ADDRESS(p); break;
- case 16:
- color = COLOR_FROM_PIXEL16_ADDRESS(p); break;
- case 32:
- color = COLOR_FROM_PIXEL32_ADDRESS(p); break;
- };
- // color = COLOR_FROM_PIXEL8_ADDRESS(netbuf);
- rect.x = pRect->x + pfburh->r.x;
- rect.y = pRect->y + pfburh->r.y;
- rect.w = pRect->w;
- rect.h = pRect->h;
- FillSolidRect(rect.x, rect.y, rect.w, rect.h, color);
- p+=subRectSize;
- }
- }