115 lines
4.2 KiB
C++
115 lines
4.2 KiB
C++
/* $Id$ */
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/*
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* This file is part of OpenTTD.
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* 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.
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* 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.
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* 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/>.
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*/
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/** @file linkgraph_gui.h Declaration of linkgraph overlay GUI. */
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#ifndef LINKGRAPH_GUI_H
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#define LINKGRAPH_GUI_H
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#include "../company_func.h"
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#include "../station_base.h"
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#include "../widget_type.h"
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#include "linkgraph_base.h"
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#include <map>
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#include <list>
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/**
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* Properties of a link between two stations.
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*/
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struct LinkProperties {
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LinkProperties() : capacity(0), usage(0), planned(0) {}
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uint capacity; ///< Capacity of the link.
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uint usage; ///< Actual usage of the link.
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uint planned; ///< Planned usage of the link.
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};
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/**
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* Handles drawing of links into some window.
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* The window must either be a smallmap or have a valid viewport.
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*/
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class LinkGraphOverlay {
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public:
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typedef std::map<StationID, LinkProperties> StationLinkMap;
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typedef std::map<StationID, StationLinkMap> LinkMap;
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typedef std::list<std::pair<StationID, uint> > StationSupplyList;
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static const uint8 LINK_COLOURS[];
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/**
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* Create a link graph overlay for the specified window.
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* @param w Window to be drawn into.
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* @param wid ID of the widget to draw into.
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* @param cargo_mask Bitmask of cargoes to be shown.
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* @param company_mask Bitmask of companies to be shown.
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* @param scale Desired thickness of lines and size of station dots.
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*/
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LinkGraphOverlay(const Window *w, uint wid, uint32 cargo_mask = 0xFFFFFFFF,
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uint32 company_mask = 1 << _local_company, uint scale = 1) :
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window(w), widget_id(wid), cargo_mask(cargo_mask), company_mask(company_mask), scale(scale)
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{}
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void RebuildCache();
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void Draw(const DrawPixelInfo *dpi) const;
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void SetCargoMask(uint32 cargo_mask);
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void SetCompanyMask(uint32 company_mask);
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/** Get a bitmask of the currently shown cargoes. */
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uint32 GetCargoMask() { return this->cargo_mask; }
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/** Get a bitmask of the currently shown companies. */
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uint32 GetCompanyMask() { return this->company_mask; }
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protected:
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const Window *window; ///< Window to be drawn into.
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const uint widget_id; ///< ID of Widget in Window to be drawn to.
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uint32 cargo_mask; ///< Bitmask of cargos to be displayed.
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uint32 company_mask; ///< Bitmask of companies to be displayed.
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LinkMap cached_links; ///< Cache for links to reduce recalculation.
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StationSupplyList cached_stations; ///< Cache for stations to be drawn.
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uint scale; ///< Width of link lines.
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Point GetStationMiddle(const Station *st) const;
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void DrawForwBackLinks(Point pta, StationID sta, Point ptb, StationID stb) const;
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void AddLinks(const Station *sta, const Station *stb);
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void DrawLinks(const DrawPixelInfo *dpi) const;
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void DrawStationDots(const DrawPixelInfo *dpi) const;
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void DrawContent(Point pta, Point ptb, const LinkProperties &cargo) const;
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bool IsLinkVisible(Point pta, Point ptb, const DrawPixelInfo *dpi, int padding = 0) const;
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bool IsPointVisible(Point pt, const DrawPixelInfo *dpi, int padding = 0) const;
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void GetWidgetDpi(DrawPixelInfo *dpi) const;
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static void AddStats(uint new_cap, uint new_usg, uint new_flow, LinkProperties &cargo);
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static void DrawVertex(int x, int y, int size, int colour, int border_colour);
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};
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void ShowLinkGraphLegend();
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/**
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* Menu window to select cargoes and companies to show in a link graph overlay.
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*/
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struct LinkGraphLegendWindow : Window {
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public:
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LinkGraphLegendWindow(WindowDesc *desc, int window_number);
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void SetOverlay(LinkGraphOverlay *overlay);
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virtual void DrawWidget(const Rect &r, int widget) const;
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virtual void OnClick(Point pt, int widget, int click_count);
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virtual void OnInvalidateData(int data = 0, bool gui_scope = true);
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private:
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LinkGraphOverlay *overlay;
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void UpdateOverlayCompanies();
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void UpdateOverlayCargoes();
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};
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#endif /* LINKGRAPH_GUI_H */
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