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zodiac_overlay.cpp

/* ScummVM - Scumm Interpreter
 * Copyright (C) 2001  Ludvig Strigeus
 * Copyright (C) 2001-2005 The ScummVM project
 * Copyright (C) 2002-2005 Chris Apers - PalmOS Backend
 *
 * This program 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.
 *
 * $Header: /cvsroot/scummvm/scummvm/backends/PalmOS/Src/zodiac_overlay.cpp,v 1.1.2.1 2005/10/18 02:11:14 sev Exp $
 *
 */

#include "be_zodiac.h"

void OSystem_PalmZodiac::showOverlay() {
      draw_osd(kDrawFight, _screenDest.w - 34, _screenDest.h + 2, false);
      undraw_mouse();
      _overlayVisible = true;
      clearOverlay();   
}

void OSystem_PalmZodiac::hideOverlay() {
      draw_osd(kDrawFight, _screenDest.w - 34, _screenDest.h + 2, _useNumPad, 1);
      undraw_mouse();
      _overlayVisible = false;
}

void OSystem_PalmZodiac::clearOverlay() {
      if (!_overlayVisible)
            return;

      Err e;
      TwGfxPointType pos = {0, 0};  
      TwGfxBitmapType bmp = {
            sizeof(TwGfxBitmapType),
            _screenWidth, _screenHeight, _screenWidth, twGfxPixelFormat8bpp,
            (void *)_offScreenP, _nativePal
      };
      e = TwGfxDrawBitmap(_overlayP, &pos, &bmp);
}

void OSystem_PalmZodiac::grabOverlay(OverlayColor *buf, int pitch) {
      Err e;
      OverlayColor *src;
      
      e = TwGfxLockSurface(_overlayP, (void **)&src);
      int h = _screenHeight;
      do {
            memcpy(buf, src, _screenWidth * 2);
            src += _screenWidth;
            buf += pitch;
      } while (--h);

      e = TwGfxUnlockSurface(_overlayP, 0);
}

void OSystem_PalmZodiac::copyRectToOverlay(const OverlayColor *buf, int pitch, int x, int y, int w, int h) {
      Err e;
      TwGfxPointType pos = {x, y};
      TwGfxBitmapType bmp = {
            sizeof(TwGfxBitmapType),
            w, h, pitch * 2 , twGfxPixelFormatRGB565_LE,
            (void *)buf, 0
      };
      e = TwGfxDrawBitmap(_overlayP, &pos, &bmp);
}

OverlayColor OSystem_PalmZodiac::RGBToColor(uint8 r, uint8 g, uint8 b) {
      return TwGfxMakeDisplayRGB(r, g, b);
}

void OSystem_PalmZodiac::colorToRGB(OverlayColor color, uint8 &r, uint8 &g, uint8 &b) {
#ifdef PALMOS_68K
      color = SWAP_BYTES_16(color);
#endif
      r = ((color >> 8) & 0xF8);
      g = ((color >> 3) & 0xFC);
      b = ((color << 3) & 0xF8);
}


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