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

#include "be_base.h"

void OSystem_PalmBase::warpMouse(int x, int y) {
      if (x != _mouseCurState.x || y != _mouseCurState.y) {
            _mouseCurState.x = x;
            _mouseCurState.y = y;
            undraw_mouse();
      }
}

bool OSystem_PalmBase::showMouse(bool visible) {
      if (_mouseVisible == visible)
            return visible;
      
      bool last = _mouseVisible;
      _mouseVisible = visible;

      if (visible)
            draw_mouse();
      else
            undraw_mouse();

      return last;
}

void OSystem_PalmBase::simulate_mouse(Event &event, Int8 iHoriz, Int8 iVert, Coord *xr, Coord *yr) {
      Int16 x = _mouseCurState.x;
      Int16 y = _mouseCurState.y;
      Int16 slow;

      if (_lastKey != kKeyNone) {
            _lastKeyRepeat++;

            if (_lastKeyRepeat > 16)
                  _lastKeyRepeat = 16;
      }
      else
            _lastKeyRepeat = 0;

      slow = (iHoriz && iVert) ? 2 : 1;

      x += iHoriz * (_lastKeyRepeat >> 2) / slow;
      y += iVert * (_lastKeyRepeat >> 2) / slow;

      x = (x < 0                    ) ? 0                         : x;
      x = (x >= _screenWidth  ) ? _screenWidth - 1    : x;
      y = (y < 0                    ) ? 0                         : y;
      y = (y >= _screenHeight ) ? _screenHeight - 1   : y;
      
      *xr = x;
      *yr = y;
}

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