slider_func.h

/*
 * This file is part of OpenTTD.
 * OpenTTD 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, version 2.
 * OpenTTD 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 OpenTTD. If not, see <http://www.gnu.org/licenses/>.
 */
 
#ifndef SLIDER_TYPE_H
#define SLIDER_TYPE_H
 
#include "core/geometry_type.hpp"
#include "gfx_type.h"
 
using SliderMarkFunc = std::optional<std::string>(int nmarks, int mark, int value);
void DrawSliderWidget(Rect r, Colours wedge_colour, Colours handle_colour, TextColour text_colour, int min_value, int max_value, int nmarks, int value, SliderMarkFunc *mark_func);
bool ClickSliderWidget(Rect r, Point pt, int min_value, int max_value, int nmarks, int &value);
 
inline bool ClickSliderWidget(Rect r, Point pt, int min_value, int max_value, int nmarks, uint8_t &value)
{
  int tmp_value = value;
  if (!ClickSliderWidget(r, pt, min_value, max_value, nmarks, tmp_value)) return false;
  value = tmp_value;
  return true;
}
 
#endif /* SLIDER_TYPE_H */