zoom_type.h

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/*
 * 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 <https://www.gnu.org/licenses/old-licenses/gpl-2.0>.
 */

 
#ifndef ZOOM_TYPE_H
#define ZOOM_TYPE_H
 
#include "core/enum_type.hpp"

enum class ZoomLevel : int8_t {
  /* Our possible zoom-levels */
  Begin = 0, 
  Min = Begin, 
  In4x = Begin, 
  In2x, 
  Normal, 
  Out2x, 
  Out4x, 
  Out8x, 
  Max = Out8x, 
  End, 
 
  /* Here we define in which zoom viewports are */
  Viewport = Normal, 
  News = Normal, 
  Industry = Out2x, 
  Town = Normal, 
  Aircraft = Normal, 
  Ship = Normal, 
  Train = Normal, 
  RoadVehicle = Normal, 
  WorldScreenshot = Normal, 
 
  Detail = Out2x, 
  TextEffect = Out2x, 
};
DECLARE_INCREMENT_DECREMENT_OPERATORS(ZoomLevel)
DECLARE_ENUM_AS_SEQUENTIAL(ZoomLevel)
 

using ZoomLevels = EnumBitSet<ZoomLevel, uint8_t>;
 
static const uint ZOOM_BASE_SHIFT = to_underlying(ZoomLevel::Normal);
static uint const ZOOM_BASE = 1U << ZOOM_BASE_SHIFT;
 
extern int _gui_scale;
extern int _gui_scale_cfg;
 
extern ZoomLevel _gui_zoom;
extern ZoomLevel _font_zoom;
 
static const int MIN_INTERFACE_SCALE = 100;
static const int MAX_INTERFACE_SCALE = 500;
 
#endif /* ZOOM_TYPE_H */