//  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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
//  USA.

#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;                                                      \
  InitSetPixels();                                                            \
                                                                              \
  for (y = ry; y < ry + rh; y += 16) {                                        \
    omni_mutex_lock l(m_bitmapdcMutex);                                       \
    ObjectSelector b(m_hBitmapDC, m_hBitmap);                                 \
    PaletteSelector p(m_hBitmapDC, m_hPalette);                               \
    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(m_netbuf, 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++) {                                     \
          fgcolor = COLOR_FROM_PIXEL##bpp##_ADDRESS(ptr);                     \
          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)
