src/slider_func.h

   1 /*
   2  * This file is part of OpenTTD.
   3  * 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.
   4  * 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.
   5  * 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/>.
   6  */
   7
   8 /** @file slider_type.h Types related to the horizontal slider widget. */
   9
  10 #ifndef SLIDER_TYPE_H
  11 #define SLIDER_TYPE_H
  12
  13 #include "core/geometry_type.hpp"
  14 #include "strings_type.h"
  15
  16 using SliderMarkFunc = StringID(int nmarks, int mark, int value);
  17 void DrawSliderWidget(Rect r, int min_value, int max_value, int nmarks, int value, SliderMarkFunc *mark_func);
  18 bool ClickSliderWidget(Rect r, Point pt, int min_value, int max_value, int nmarks, int &value);
  19
  20 inline bool ClickSliderWidget(Rect r, Point pt, int min_value, int max_value, int nmarks, uint8_t &value)
  21 {
  22         int tmp_value = value;
  23         if (!ClickSliderWidget(r, pt, min_value, max_value, nmarks, tmp_value)) return false;
  24         value = tmp_value;
  25         return true;
  26 }
  27
  28 #endif /* SLIDER_TYPE_H */