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Copy pathClientConnectionHextile.cpp
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executable file
·134 lines (126 loc) · 7.79 KB
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// Copyright (C) 1997, 1998 Olivetti & Oracle Research Laboratory
// Copyright (C) 2025-2026 RasPython3
//
// 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.
// Hextile Encoding
//
// The bits of the ClientConnection object to do with Hextile.
#include "stdhdrs.h"
#include "vncviewer.h"
#include "ClientConnection.h"
void ClientConnection::ReadHextileRect(rfbFramebufferUpdateRectHeader *pfburh)
{
switch (m_myFormat.bitsPerPixel) {
case 8:
HandleHextileEncoding8(pfburh->r.x, pfburh->r.y, pfburh->r.w, pfburh->r.h);
break;
case 16:
HandleHextileEncoding16(pfburh->r.x, pfburh->r.y, pfburh->r.w, pfburh->r.h);
break;
case 32:
HandleHextileEncoding32(pfburh->r.x, pfburh->r.y, pfburh->r.w, pfburh->r.h);
break;
}
}
#define DEFINE_HEXTILE(bpp) \
void ClientConnection::HandleHextileEncoding##bpp(int rx, int ry, int rw, int rh) \
{ \
CARD##bpp bg, fg; \
COLORREF bgcolor, fgcolor; \
int i; \
CARD8 *ptr; \
int x, y, w, h; \
int sx, sy, sw, sh; \
CARD8 subencoding; \
CARD8 nSubrects; \
\
CheckBufferSize( 16 * 16 * bpp ); \
SETUP_COLOR_SHORTCUTS; \
\
for (y = ry; y < ry+rh; y += 16) { \
for (x = rx; x < rx+rw; x += 16) { \
w = h = 16; \
if (rx+rw - x < 16) \
w = rx+rw - x; \
if (ry+rh - y < 16) \
h = ry+rh - y; \
\
ReadExact((char *)&subencoding, 1); \
\
if (subencoding & rfbHextileRaw) { \
ReadExact(m_netbuf, w * h * (bpp / 8)); \
SETPIXELS(bpp, x,y,w,h) \
continue; \
} \
\
if (subencoding & rfbHextileBackgroundSpecified) { \
ReadExact((char *)&bg, (bpp/8)); \
bgcolor = COLOR_FROM_PIXEL##bpp##_ADDRESS(&bg); \
} \
FillSolidRect(x,y,w,h,bgcolor); \
\
if (subencoding & rfbHextileForegroundSpecified) { \
ReadExact((char *)&fg, (bpp/8)); \
fgcolor = COLOR_FROM_PIXEL##bpp##_ADDRESS(&fg); \
} \
\
if (!(subencoding & rfbHextileAnySubrects)) { \
continue; \
} \
\
ReadExact( (char *)&nSubrects, 1) ; \
\
ptr = (CARD8 *)m_netbuf; \
\
if (subencoding & rfbHextileSubrectsColoured) { \
\
ReadExact( m_netbuf, nSubrects * (2 + (bpp / 8))); \
\
for (i = 0; i < nSubrects; i++) { \
memcpy(&fg, ptr, bpp/8); \
fgcolor = COLOR_FROM_PIXEL##bpp##_ADDRESS(&fg); \
ptr += (bpp/8); \
sx = *ptr >> 4; \
sy = *ptr++ & 0x0f; \
sw = (*ptr >> 4) + 1; \
sh = (*ptr++ & 0x0f) + 1; \
FillSolidRect(x+sx, y+sy, sw, sh, fgcolor); \
} \
\
} else { \
ReadExact(m_netbuf, nSubrects * 2); \
\
for (i = 0; i < nSubrects; i++) { \
sx = *ptr >> 4; \
sy = *ptr++ & 0x0f; \
sw = (*ptr >> 4) + 1; \
sh = (*ptr++ & 0x0f) + 1; \
FillSolidRect(x+sx, y+sy, sw, sh, fgcolor); \
} \
} \
} \
} \
\
}
DEFINE_HEXTILE(8)
DEFINE_HEXTILE(16)
DEFINE_HEXTILE(32)