mirror of
https://github.com/apache/cloudstack.git
synced 2025-10-26 08:42:29 +01:00
95 lines
3.3 KiB
C++
95 lines
3.3 KiB
C++
// Copyright (C) 1999 AT&T Laboratories Cambridge. All Rights Reserved.
|
|
//
|
|
// 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.uk.research.att.com/vnc or
|
|
// contact the authors on vnc@uk.research.att.com for information on obtaining it.
|
|
//
|
|
// RRE (Rising Rectangle Encoding)
|
|
//
|
|
// The bits of the ClientConnection object to do with RRE.
|
|
|
|
#include "stdhdrs.h"
|
|
#include "vncviewer.h"
|
|
#include "ClientConnection.h"
|
|
|
|
void ClientConnection::ReadRRERect(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;
|
|
}
|
|
|
|
// No other threads can use bitmap DC
|
|
omni_mutex_lock l(m_bitmapdcMutex);
|
|
ObjectSelector b(m_hBitmapDC, m_hBitmap);
|
|
PaletteSelector ps(m_hBitmapDC, m_hPalette);
|
|
|
|
// 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
|
|
rfbRectangle rect, *pRect;
|
|
// The size of an RRE subrect including color info
|
|
int subRectSize = m_minPixelBytes + sz_rfbRectangle;
|
|
|
|
// 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 = (rfbRectangle *) (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;
|
|
};
|
|
|
|
rect.x = (CARD16) (Swap16IfLE(pRect->x) + pfburh->r.x);
|
|
rect.y = (CARD16) (Swap16IfLE(pRect->y) + pfburh->r.y);
|
|
rect.w = Swap16IfLE(pRect->w);
|
|
rect.h = Swap16IfLE(pRect->h);
|
|
|
|
FillSolidRect(rect.x, rect.y, rect.w, rect.h, color);
|
|
p+=subRectSize;
|
|
}
|
|
}
|