src/smallmap_gui.h

   1 /* $Id$ */
   2
   3 /*
   4  * This file is part of OpenTTD.
   5  * 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.
   6  * 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.
   7  * 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/>.
   8  */
   9
  10 /** @file smallmap_gui.h Smallmap GUI functions. */
  11
  12 #ifndef SMALLMAP_GUI_H
  13 #define SMALLMAP_GUI_H
  14
  15 #include "industry_type.h"
  16 #include "company_base.h"
  17 #include "window_gui.h"
  18 #include "strings_func.h"
  19 #include "blitter/factory.hpp"
  20 #include "linkgraph/linkgraph_gui.h"
  21 #include "widgets/smallmap_widget.h"
  22
  23 /* set up the cargos to be displayed in the smallmap's route legend */
  24 void BuildLinkStatsLegend();
  25
  26 void BuildIndustriesLegend();
  27 void ShowSmallMap();
  28 void BuildLandLegend();
  29 void BuildOwnerLegend();
  30
  31 /** Structure for holding relevant data for legends in small map */
  32 struct LegendAndColour {
  33         uint8 colour;              ///< Colour of the item on the map.
  34         StringID legend;           ///< String corresponding to the coloured item.
  35         IndustryType type;         ///< Type of industry. Only valid for industry entries.
  36         uint8 height;              ///< Height in tiles. Only valid for height legend entries.
  37         CompanyID company;         ///< Company to display. Only valid for company entries of the owner legend.
  38         bool show_on_map;          ///< For filtering industries, if \c true, industry is shown on the map in colour.
  39         bool end;                  ///< This is the end of the list.
  40         bool col_break;            ///< Perform a column break and go further at the next column.
  41 };
  42
  43 /** Class managing the smallmap window. */
  44 class SmallMapWindow : public Window {
  45 protected:
  46         /** Types of legends in the #WID_SM_LEGEND widget. */
  47         enum SmallMapType {
  48                 SMT_CONTOUR,
  49                 SMT_VEHICLES,
  50                 SMT_INDUSTRY,
  51                 SMT_LINKSTATS,
  52                 SMT_ROUTES,
  53                 SMT_VEGETATION,
  54                 SMT_OWNER,
  55         };
  56
  57         /** Available kinds of zoomlevel changes. */
  58         enum ZoomLevelChange {
  59                 ZLC_INITIALIZE, ///< Initialize zoom level.
  60                 ZLC_ZOOM_OUT,   ///< Zoom out.
  61                 ZLC_ZOOM_IN,    ///< Zoom in.
  62         };
  63
  64         static SmallMapType map_type; ///< Currently displayed legends.
  65         static bool show_towns;       ///< Display town names in the smallmap.
  66         static int max_heightlevel;   ///< Currently used/cached maximum heightlevel.
  67
  68         static const uint LEGEND_BLOB_WIDTH = 8;              ///< Width of the coloured blob in front of a line text in the #WID_SM_LEGEND widget.
  69         static const uint INDUSTRY_MIN_NUMBER_OF_COLUMNS = 2; ///< Minimal number of columns in the #WID_SM_LEGEND widget for the #SMT_INDUSTRY legend.
  70         static const uint FORCE_REFRESH_PERIOD = 0x1F; ///< map is redrawn after that many ticks
  71         static const uint BLINK_PERIOD         = 0x0F; ///< highlight blinking interval
  72
  73         uint min_number_of_columns;    ///< Minimal number of columns in legends.
  74         uint min_number_of_fixed_rows; ///< Minimal number of rows in the legends for the fixed layouts only (all except #SMT_INDUSTRY).
  75         uint column_width;             ///< Width of a column in the #WID_SM_LEGEND widget.
  76
  77         int32 scroll_x;  ///< Horizontal world coordinate of the base tile left of the top-left corner of the smallmap display.
  78         int32 scroll_y;  ///< Vertical world coordinate of the base tile left of the top-left corner of the smallmap display.
  79         int32 subscroll; ///< Number of pixels (0..3) between the right end of the base tile and the pixel at the top-left corner of the smallmap display.
  80         int zoom;        ///< Zoom level. Bigger number means more zoom-out (further away).
  81
  82         uint8 refresh;   ///< Refresh counter, zeroed every FORCE_REFRESH_PERIOD ticks.
  83         LinkGraphOverlay *overlay;
  84
  85         static void BreakIndustryChainLink();
  86         Point SmallmapRemapCoords(int x, int y) const;
  87
  88         /**
  89          * Draws vertical part of map indicator
  90          * @param x X coord of left/right border of main viewport
  91          * @param y Y coord of top border of main viewport
  92          * @param y2 Y coord of bottom border of main viewport
  93          */
  94         static inline void DrawVertMapIndicator(int x, int y, int y2)
  95         {
  96                 GfxFillRect(x, y,      x, y + 3, PC_VERY_LIGHT_YELLOW);
  97                 GfxFillRect(x, y2 - 3, x, y2,    PC_VERY_LIGHT_YELLOW);
  98         }
  99
 100         /**
 101          * Draws horizontal part of map indicator
 102          * @param x X coord of left border of main viewport
 103          * @param x2 X coord of right border of main viewport
 104          * @param y Y coord of top/bottom border of main viewport
 105          */
 106         static inline void DrawHorizMapIndicator(int x, int x2, int y)
 107         {
 108                 GfxFillRect(x,      y, x + 3, y, PC_VERY_LIGHT_YELLOW);
 109                 GfxFillRect(x2 - 3, y, x2,    y, PC_VERY_LIGHT_YELLOW);
 110         }
 111
 112         /**
 113          * Compute minimal required width of the legends.
 114          * @return Minimally needed width for displaying the smallmap legends in pixels.
 115          */
 116         inline uint GetMinLegendWidth() const
 117         {
 118                 return WD_FRAMERECT_LEFT + this->min_number_of_columns * this->column_width;
 119         }
 120
 121         /**
 122          * Return number of columns that can be displayed in \a width pixels.
 123          * @return Number of columns to display.
 124          */
 125         inline uint GetNumberColumnsLegend(uint width) const
 126         {
 127                 return width / this->column_width;
 128         }
 129
 130         /**
 131          * Compute height given a number of columns.
 132          * @param num_columns Number of columns.
 133          * @return Needed height for displaying the smallmap legends in pixels.
 134          */
 135         inline uint GetLegendHeight(uint num_columns) const
 136         {
 137                 return WD_FRAMERECT_TOP + WD_FRAMERECT_BOTTOM +
 138                                 this->GetNumberRowsLegend(num_columns) * FONT_HEIGHT_SMALL;
 139         }
 140
 141         /**
 142          * Get a bitmask for company links to be displayed. Usually this will be
 143          * the _local_company. Spectators get to see all companies' links.
 144          * @return Company mask.
 145          */
 146         inline uint32 GetOverlayCompanyMask() const
 147         {
 148                 return Company::IsValidID(_local_company) ? 1U << _local_company : 0xffffffff;
 149         }
 150
 151         void RebuildColourIndexIfNecessary();
 152         uint GetNumberRowsLegend(uint columns) const;
 153         void SelectLegendItem(int click_pos, LegendAndColour *legend, int end_legend_item, int begin_legend_item = 0);
 154         void SwitchMapType(SmallMapType map_type);
 155         void SetNewScroll(int sx, int sy, int sub);
 156
 157         void DrawMapIndicators() const;
 158         void DrawSmallMapColumn(void *dst, uint xc, uint yc, int pitch, int reps, int start_pos, int end_pos, Blitter *blitter) const;
 159         void DrawVehicles(const DrawPixelInfo *dpi, Blitter *blitter) const;
 160         void DrawTowns(const DrawPixelInfo *dpi) const;
 161         void DrawSmallMap(DrawPixelInfo *dpi) const;
 162
 163         Point RemapTile(int tile_x, int tile_y) const;
 164         Point PixelToTile(int px, int py, int *sub, bool add_sub = true) const;
 165         Point ComputeScroll(int tx, int ty, int x, int y, int *sub);
 166         void SetZoomLevel(ZoomLevelChange change, const Point *zoom_pt);
 167         void SetOverlayCargoMask();
 168         void SetupWidgetData();
 169         uint32 GetTileColours(const TileArea &ta) const;
 170
 171         int GetPositionOnLegend(Point pt);
 172
 173 public:
 174         friend class NWidgetSmallmapDisplay;
 175
 176         SmallMapWindow(WindowDesc *desc, int window_number);
 177         virtual ~SmallMapWindow();
 178
 179         void SmallMapCenterOnCurrentPos();
 180         Point GetStationMiddle(const Station *st) const;
 181
 182         virtual void SetStringParameters(int widget) const;
 183         virtual void OnInit();
 184         virtual void OnPaint();
 185         virtual void DrawWidget(const Rect &r, int widget) const;
 186         virtual void OnClick(Point pt, int widget, int click_count);
 187         virtual void OnInvalidateData(int data = 0, bool gui_scope = true);
 188         virtual bool OnRightClick(Point pt, int widget);
 189         virtual void OnMouseWheel(int wheel);
 190         virtual void OnTick();
 191         virtual void OnScroll(Point delta);
 192         virtual void OnMouseOver(Point pt, int widget);
 193 };
 194
 195 #endif /* SMALLMAP_GUI_H */