subsidy_gui.cpp

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00001 /* $Id: subsidy_gui.cpp 18966 2010-01-30 18:34:48Z frosch $ */
00002 
00003 /*
00004  * This file is part of OpenTTD.
00005  * 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.
00006  * 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.
00007  * 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/>.
00008  */
00009 
00012 #include "stdafx.h"
00013 #include "industry.h"
00014 #include "town.h"
00015 #include "window_gui.h"
00016 #include "strings_func.h"
00017 #include "date_func.h"
00018 #include "viewport_func.h"
00019 #include "gfx_func.h"
00020 #include "gui.h"
00021 #include "subsidy_func.h"
00022 #include "subsidy_base.h"
00023 #include "core/geometry_func.hpp"
00024 
00025 #include "table/strings.h"
00026 
00028 enum SubsidyListWidgets {
00029   SLW_PANEL,
00030   SLW_SCROLLBAR,
00031 };
00032 
00033 struct SubsidyListWindow : Window {
00034   SubsidyListWindow(const WindowDesc *desc, WindowNumber window_number) : Window()
00035   {
00036     this->InitNested(desc, window_number);
00037     this->OnInvalidateData(0);
00038   }
00039 
00040   virtual void OnClick(Point pt, int widget, int click_count)
00041   {
00042     if (widget != SLW_PANEL) return;
00043 
00044     int y = (pt.y - this->GetWidget<NWidgetBase>(SLW_PANEL)->pos_y - WD_FRAMERECT_TOP) / this->resize.step_height;
00045     if (!IsInsideMM(y, 0, this->vscroll.GetCapacity())) return;
00046 
00047     y += this->vscroll.GetPosition();
00048 
00049     int num = 0;
00050     const Subsidy *s;
00051     FOR_ALL_SUBSIDIES(s) {
00052       if (!s->IsAwarded()) {
00053         y--;
00054         if (y == 0) {
00055           this->HandleClick(s);
00056           return;
00057         }
00058         num++;
00059       }
00060     }
00061 
00062     if (num == 0) {
00063       y--; // "None"
00064       if (y < 0) return;
00065     }
00066 
00067     y -= 2; // "Services already subsidised:"
00068     if (y < 0) return;
00069 
00070     FOR_ALL_SUBSIDIES(s) {
00071       if (s->IsAwarded()) {
00072         y--;
00073         if (y == 0) {
00074           this->HandleClick(s);
00075           return;
00076         }
00077       }
00078     }
00079   }
00080 
00081   void HandleClick(const Subsidy *s)
00082   {
00083     /* determine src coordinate for subsidy and try to scroll to it */
00084     TileIndex xy;
00085     switch (s->src_type) {
00086       case ST_INDUSTRY: xy = Industry::Get(s->src)->location.tile; break;
00087       case ST_TOWN:     xy =     Town::Get(s->src)->xy; break;
00088       default: NOT_REACHED();
00089     }
00090 
00091     if (_ctrl_pressed || !ScrollMainWindowToTile(xy)) {
00092       if (_ctrl_pressed) ShowExtraViewPortWindow(xy);
00093 
00094       /* otherwise determine dst coordinate for subsidy and scroll to it */
00095       switch (s->dst_type) {
00096         case ST_INDUSTRY: xy = Industry::Get(s->dst)->location.tile; break;
00097         case ST_TOWN:     xy =     Town::Get(s->dst)->xy; break;
00098         default: NOT_REACHED();
00099       }
00100 
00101       if (_ctrl_pressed) {
00102         ShowExtraViewPortWindow(xy);
00103       } else {
00104         ScrollMainWindowToTile(xy);
00105       }
00106     }
00107   }
00108 
00109   virtual void OnPaint()
00110   {
00111     this->DrawWidgets();
00112   }
00113 
00118   uint CountLines()
00119   {
00120     /* Count number of (non) awarded subsidies */
00121     uint num_awarded = 0;
00122     uint num_not_awarded = 0;
00123     const Subsidy *s;
00124     FOR_ALL_SUBSIDIES(s) {
00125       if (!s->IsAwarded()) {
00126         num_not_awarded++;
00127       } else {
00128         num_awarded++;
00129       }
00130     }
00131 
00132     /* Count the 'none' lines */
00133     if (num_awarded     == 0) num_awarded = 1;
00134     if (num_not_awarded == 0) num_not_awarded = 1;
00135 
00136     /* Offered, accepted and an empty line before the accepted ones. */
00137     return 3 + num_awarded + num_not_awarded;
00138   }
00139 
00140   virtual void UpdateWidgetSize(int widget, Dimension *size, const Dimension &padding, Dimension *fill, Dimension *resize)
00141   {
00142     if (widget != SLW_PANEL) return;
00143     Dimension d = maxdim(GetStringBoundingBox(STR_SUBSIDIES_OFFERED_TITLE), GetStringBoundingBox(STR_SUBSIDIES_SUBSIDISED_TITLE));
00144 
00145     resize->height = d.height;
00146 
00147     d.height *= 5;
00148     d.width += padding.width + WD_FRAMERECT_RIGHT + WD_FRAMERECT_LEFT;
00149     d.height += padding.height + WD_FRAMERECT_TOP + WD_FRAMERECT_BOTTOM;
00150     *size = maxdim(*size, d);
00151   }
00152 
00153   virtual void DrawWidget(const Rect &r, int widget) const
00154   {
00155     if (widget != SLW_PANEL) return;
00156 
00157     YearMonthDay ymd;
00158     ConvertDateToYMD(_date, &ymd);
00159 
00160     int right = r.right - WD_FRAMERECT_RIGHT;
00161     int y = r.top + WD_FRAMERECT_TOP;
00162     int x = r.left + WD_FRAMERECT_LEFT;
00163 
00164     int pos = -this->vscroll.GetPosition();
00165     const int cap = this->vscroll.GetCapacity();
00166 
00167     /* Section for drawing the offered subisidies */
00168     if (IsInsideMM(pos, 0, cap)) DrawString(x, right, y + pos * FONT_HEIGHT_NORMAL, STR_SUBSIDIES_OFFERED_TITLE);
00169     pos++;
00170 
00171     uint num = 0;
00172     const Subsidy *s;
00173     FOR_ALL_SUBSIDIES(s) {
00174       if (!s->IsAwarded()) {
00175         if (IsInsideMM(pos, 0, cap)) {
00176           /* Displays the two offered towns */
00177           SetupSubsidyDecodeParam(s, 1);
00178           SetDParam(7, _date - ymd.day + s->remaining * 32);
00179           DrawString(x, right, y + pos * FONT_HEIGHT_NORMAL, STR_SUBSIDIES_OFFERED_FROM_TO);
00180         }
00181         pos++;
00182         num++;
00183       }
00184     }
00185 
00186     if (num == 0) {
00187       if (IsInsideMM(pos, 0, cap)) DrawString(x, right, y + pos * FONT_HEIGHT_NORMAL, STR_SUBSIDIES_NONE);
00188       pos++;
00189     }
00190 
00191     /* Section for drawing the already granted subisidies */
00192     pos++;
00193     if (IsInsideMM(pos, 0, cap)) DrawString(x, right, y + pos * FONT_HEIGHT_NORMAL, STR_SUBSIDIES_SUBSIDISED_TITLE);
00194     pos++;
00195     num = 0;
00196 
00197     FOR_ALL_SUBSIDIES(s) {
00198       if (s->IsAwarded()) {
00199         if (IsInsideMM(pos, 0, cap)) {
00200           SetupSubsidyDecodeParam(s, 1);
00201           SetDParam(7, s->awarded);
00202           SetDParam(8, _date - ymd.day + s->remaining * 32);
00203 
00204           /* Displays the two connected stations */
00205           DrawString(x, right, y + pos * FONT_HEIGHT_NORMAL, STR_SUBSIDIES_SUBSIDISED_FROM_TO);
00206         }
00207         pos++;
00208         num++;
00209       }
00210     }
00211 
00212     if (num == 0) {
00213       if (IsInsideMM(pos, 0, cap)) DrawString(x, right, y + pos * FONT_HEIGHT_NORMAL, STR_SUBSIDIES_NONE);
00214       pos++;
00215     }
00216   }
00217 
00218   virtual void OnResize()
00219   {
00220     this->vscroll.SetCapacityFromWidget(this, SLW_PANEL);
00221   }
00222 
00223   virtual void OnInvalidateData(int data)
00224   {
00225     this->vscroll.SetCount(this->CountLines());
00226   }
00227 };
00228 
00229 static const NWidgetPart _nested_subsidies_list_widgets[] = {
00230   NWidget(NWID_HORIZONTAL),
00231     NWidget(WWT_CLOSEBOX, COLOUR_BROWN),
00232     NWidget(WWT_CAPTION, COLOUR_BROWN), SetDataTip(STR_SUBSIDIES_CAPTION, STR_TOOLTIP_WINDOW_TITLE_DRAG_THIS),
00233     NWidget(WWT_SHADEBOX, COLOUR_BROWN),
00234     NWidget(WWT_STICKYBOX, COLOUR_BROWN),
00235   EndContainer(),
00236   NWidget(NWID_HORIZONTAL),
00237     NWidget(WWT_PANEL, COLOUR_BROWN, SLW_PANEL), SetDataTip(0x0, STR_SUBSIDIES_TOOLTIP_CLICK_ON_SERVICE_TO_CENTER), SetResize(1, 1), EndContainer(),
00238     NWidget(NWID_VERTICAL),
00239       NWidget(WWT_SCROLLBAR, COLOUR_BROWN, SLW_SCROLLBAR),
00240       NWidget(WWT_RESIZEBOX, COLOUR_BROWN),
00241     EndContainer(),
00242   EndContainer(),
00243 };
00244 
00245 static const WindowDesc _subsidies_list_desc(
00246   WDP_AUTO, 500, 127,
00247   WC_SUBSIDIES_LIST, WC_NONE,
00248   0,
00249   _nested_subsidies_list_widgets, lengthof(_nested_subsidies_list_widgets)
00250 );
00251 
00252 
00253 void ShowSubsidiesList()
00254 {
00255   AllocateWindowDescFront<SubsidyListWindow>(&_subsidies_list_desc, 0);
00256 }

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