src/zoom_type.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 zoom_type.h Types related to zooming in and out. */
   9
  10 #ifndef ZOOM_TYPE_H
  11 #define ZOOM_TYPE_H
  12
  13 #include "core/enum_type.hpp"
  14
  15 static uint const ZOOM_LVL_SHIFT = 2;
  16 static uint const ZOOM_LVL_BASE  = 1 << ZOOM_LVL_SHIFT;
  17
  18 static const int8 ZOOM_LVL_CFG_AUTO = -1;
  19
  20 /** All zoom levels we know. */
  21 enum ZoomLevel : byte {
  22         /* Our possible zoom-levels */
  23         ZOOM_LVL_BEGIN  = 0, ///< Begin for iteration.
  24         ZOOM_LVL_NORMAL = 0, ///< The normal zoom level.
  25         ZOOM_LVL_OUT_2X,     ///< Zoomed 2 times out.
  26         ZOOM_LVL_OUT_4X,     ///< Zoomed 4 times out.
  27         ZOOM_LVL_OUT_8X,     ///< Zoomed 8 times out.
  28         ZOOM_LVL_OUT_16X,    ///< Zoomed 16 times out.
  29         ZOOM_LVL_OUT_32X,    ///< Zoomed 32 times out.
  30         ZOOM_LVL_END,        ///< End for iteration.
  31
  32         ZOOM_LVL_COUNT = ZOOM_LVL_END - ZOOM_LVL_BEGIN, ///< Number of zoom levels.
  33
  34         /* Here we define in which zoom viewports are */
  35         ZOOM_LVL_VIEWPORT = ZOOM_LVL_OUT_4X, ///< Default zoom level for viewports.
  36         ZOOM_LVL_NEWS     = ZOOM_LVL_OUT_4X, ///< Default zoom level for the news messages.
  37         ZOOM_LVL_INDUSTRY = ZOOM_LVL_OUT_8X, ///< Default zoom level for the industry view.
  38         ZOOM_LVL_TOWN     = ZOOM_LVL_OUT_4X, ///< Default zoom level for the town view.
  39         ZOOM_LVL_AIRCRAFT = ZOOM_LVL_OUT_4X, ///< Default zoom level for the aircraft view.
  40         ZOOM_LVL_SHIP     = ZOOM_LVL_OUT_4X, ///< Default zoom level for the ship view.
  41         ZOOM_LVL_TRAIN    = ZOOM_LVL_OUT_4X, ///< Default zoom level for the train view.
  42         ZOOM_LVL_ROADVEH  = ZOOM_LVL_OUT_4X, ///< Default zoom level for the road vehicle view.
  43         ZOOM_LVL_WORLD_SCREENSHOT = ZOOM_LVL_OUT_4X, ///< Default zoom level for the world screen shot.
  44
  45         ZOOM_LVL_DETAIL   = ZOOM_LVL_OUT_8X, ///< All zoomlevels below or equal to this, will result in details on the screen, like road-work, ...
  46
  47         ZOOM_LVL_MIN      = ZOOM_LVL_NORMAL, ///< Minimum zoom level.
  48         ZOOM_LVL_MAX      = ZOOM_LVL_OUT_32X, ///< Maximum zoom level.
  49
  50 };
  51 DECLARE_POSTFIX_INCREMENT(ZoomLevel)
  52
  53 extern int8 _gui_zoom_cfg;
  54 extern int8 _font_zoom_cfg;
  55
  56 extern ZoomLevel _gui_zoom;
  57 extern ZoomLevel _font_zoom;
  58 #define ZOOM_LVL_GUI (_gui_zoom)
  59 #define ZOOM_LVL_FONT (_font_zoom)
  60
  61 #endif /* ZOOM_TYPE_H */