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os5_gfx.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/os5_gfx.cpp,v 1.1.2.1 2005/10/18 02:11:14 sev Exp $
 *
 */

#include "be_os5.h"

#ifdef PALMOS_ARM
#include "pace.h"
#include "oscalls.h"
#endif

void OSystem_PalmOS5::int_initSize(uint w, uint h, int overlayScale) {
}

void OSystem_PalmOS5::load_gfx_mode() {
      Err e;
      
      if (_gfxLoaded)
            return;
      _gfxLoaded = true;

      _sysOldCoord = WinSetCoordinateSystem(kCoordinatesNative);

#ifdef PALMOS_68K
      // init mouse (must be here, after WinSetCoordinateSystem)
      _mouseBackupH = WinCreateOffscreenWindow(MAX_MOUSE_W, MAX_MOUSE_H, nativeFormat, &e);
      _mouseBackupP = (byte *)(BmpGetBits(WinGetBitmap(_mouseBackupH)));

      _offScreenH = WinCreateOffscreenWindow(_screenWidth, _screenHeight, nativeFormat, &e);
      _screenH = WinGetDisplayWindow();
      _offScreenP = (byte *)(BmpGetBits(WinGetBitmap(_offScreenH)));
      _screenP = (byte *)(BmpGetBits(WinGetBitmap(_screenH)));
#endif

      _screenOffset.x = (gVars->screenWidth - _screenWidth) / 2;
      _screenOffset.y = (gVars->screenHeight - _screenHeight)  / 2;
}

void OSystem_PalmOS5::unload_gfx_mode() {
      if (!_gfxLoaded)
            return;     
      _gfxLoaded = false;
      
      if (_mouseBackupH)
            WinDeleteWindow(_mouseBackupH, false);
}

void OSystem_PalmOS5::copyRectToScreen(const byte *buf, int pitch, int x, int y, int w, int h) {
      // Clip the coordinates
      if (x < 0) {
            w += x;
            buf -= x;
            x = 0;
      }

      if (y < 0) {
            h += y;
            buf -= y * pitch;
            y = 0;
      }

      if (w > _screenWidth - x)
            w = _screenWidth - x;

      if (h > _screenHeight - y)
            h = _screenHeight - y;

      if (w <= 0 || h <= 0)
            return;

#ifdef PALMOS_68K
      BitmapTypeV1 nfo = {
            w, h, pitch,
            {0,0,0,0,0,0,0,0,0},
            8, BitmapVersionOne, 0
      };
      
      BitmapTypeV3 *v3 = BmpCreateBitmapV3((BitmapType*)&nfo, kDensityDouble, (void *)buf, 0);

      WinSetDrawWindow(_offScreenH);
      WinDrawBitmap((BitmapPtr)v3, x, y);
      BmpDelete((BitmapPtr)v3);
#else
      byte *dst = _offScreenP + y * _screenWidth + x;

      if (w == pitch && w == _screenWidth) {
            MemMove(dst, buf, w*h);
      } else {
            do {
                  MemMove(dst, buf, w);
                  dst += _screenWidth;
                  buf += pitch;
            } while (--h);
      }
#endif
}

void OSystem_PalmOS5::int_updateScreen() {
#ifdef PALMOS_68K
      RectangleType r;
      RctSetRectangle(&r, 0, 0, _screenWidth, _screenHeight - _current_shake_pos);
      WinCopyRectangle(_offScreenH, _screenH, &r, _screenOffset.x, _screenOffset.y + _current_shake_pos, winPaint);
#endif
}

void OSystem_PalmOS5::clearScreen() {
      RGBColorType rgb = { 0,0,0,0 };
      WinSetDrawWindow(WinGetDisplayWindow());
      WinSetBackColorRGB(&rgb, 0);
      WinEraseWindow();
}

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