# subsidy_gui.cpp

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    00001 /* $Id$ */
    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   Scrollbar *vscroll;
    00035
    00036   SubsidyListWindow(const WindowDesc *desc, WindowNumber window_number) : Window()
    00037   {
    00038     this->CreateNestedTree(desc);
    00039     this->vscroll = this->GetScrollbar(SLW_SCROLLBAR);
    00040     this->FinishInitNested(desc, window_number);
    00041     this->OnInvalidateData(0);
    00042   }
    00043
    00044   virtual void OnClick(Point pt, int widget, int click_count)
    00045   {
    00046     if (widget != SLW_PANEL) return;
    00047
    00048     int y = this->vscroll->GetScrolledRowFromWidget(pt.y, this, SLW_PANEL, WD_FRAMERECT_TOP);
    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
    00113   uint CountLines()
    00114   {
    00115     /* Count number of (non) awarded subsidies */
    00116     uint num_awarded = 0;
    00117     uint num_not_awarded = 0;
    00118     const Subsidy *s;
    00119     FOR_ALL_SUBSIDIES(s) {
    00120       if (!s->IsAwarded()) {
    00121         num_not_awarded++;
    00122       } else {
    00123         num_awarded++;
    00124       }
    00125     }
    00126
    00127     /* Count the 'none' lines */
    00128     if (num_awarded     == 0) num_awarded = 1;
    00129     if (num_not_awarded == 0) num_not_awarded = 1;
    00130
    00131     /* Offered, accepted and an empty line before the accepted ones. */
    00132     return 3 + num_awarded + num_not_awarded;
    00133   }
    00134
    00135   virtual void UpdateWidgetSize(int widget, Dimension *size, const Dimension &padding, Dimension *fill, Dimension *resize)
    00136   {
    00137     if (widget != SLW_PANEL) return;
    00138     Dimension d = maxdim(GetStringBoundingBox(STR_SUBSIDIES_OFFERED_TITLE), GetStringBoundingBox(STR_SUBSIDIES_SUBSIDISED_TITLE));
    00139
    00140     resize->height = d.height;
    00141
    00142     d.height *= 5;
    00143     d.width += padding.width + WD_FRAMERECT_RIGHT + WD_FRAMERECT_LEFT;
    00144     d.height += padding.height + WD_FRAMERECT_TOP + WD_FRAMERECT_BOTTOM;
    00145     *size = maxdim(*size, d);
    00146   }
    00147
    00148   virtual void DrawWidget(const Rect &r, int widget) const
    00149   {
    00150     if (widget != SLW_PANEL) return;
    00151
    00152     YearMonthDay ymd;
    00153     ConvertDateToYMD(_date, &ymd);
    00154
    00155     int right = r.right - WD_FRAMERECT_RIGHT;
    00156     int y = r.top + WD_FRAMERECT_TOP;
    00157     int x = r.left + WD_FRAMERECT_LEFT;
    00158
    00159     int pos = -this->vscroll->GetPosition();
    00160     const int cap = this->vscroll->GetCapacity();
    00161
    00162     /* Section for drawing the offered subisidies */
    00163     if (IsInsideMM(pos, 0, cap)) DrawString(x, right, y + pos * FONT_HEIGHT_NORMAL, STR_SUBSIDIES_OFFERED_TITLE);
    00164     pos++;
    00165
    00166     uint num = 0;
    00167     const Subsidy *s;
    00168     FOR_ALL_SUBSIDIES(s) {
    00169       if (!s->IsAwarded()) {
    00170         if (IsInsideMM(pos, 0, cap)) {
    00171           /* Displays the two offered towns */
    00172           SetupSubsidyDecodeParam(s, true);
    00173           SetDParam(7, _date - ymd.day + s->remaining * 32);
    00174           DrawString(x, right, y + pos * FONT_HEIGHT_NORMAL, STR_SUBSIDIES_OFFERED_FROM_TO);
    00175         }
    00176         pos++;
    00177         num++;
    00178       }
    00179     }
    00180
    00181     if (num == 0) {
    00182       if (IsInsideMM(pos, 0, cap)) DrawString(x, right, y + pos * FONT_HEIGHT_NORMAL, STR_SUBSIDIES_NONE);
    00183       pos++;
    00184     }
    00185
    00186     /* Section for drawing the already granted subisidies */
    00187     pos++;
    00188     if (IsInsideMM(pos, 0, cap)) DrawString(x, right, y + pos * FONT_HEIGHT_NORMAL, STR_SUBSIDIES_SUBSIDISED_TITLE);
    00189     pos++;
    00190     num = 0;
    00191
    00192     FOR_ALL_SUBSIDIES(s) {
    00193       if (s->IsAwarded()) {
    00194         if (IsInsideMM(pos, 0, cap)) {
    00195           SetupSubsidyDecodeParam(s, true);
    00196           SetDParam(7, s->awarded);
    00197           SetDParam(8, _date - ymd.day + s->remaining * 32);
    00198
    00199           /* Displays the two connected stations */
    00200           DrawString(x, right, y + pos * FONT_HEIGHT_NORMAL, STR_SUBSIDIES_SUBSIDISED_FROM_TO);
    00201         }
    00202         pos++;
    00203         num++;
    00204       }
    00205     }
    00206
    00207     if (num == 0) {
    00208       if (IsInsideMM(pos, 0, cap)) DrawString(x, right, y + pos * FONT_HEIGHT_NORMAL, STR_SUBSIDIES_NONE);
    00209       pos++;
    00210     }
    00211   }
    00212
    00213   virtual void OnResize()
    00214   {
    00215     this->vscroll->SetCapacityFromWidget(this, SLW_PANEL);
    00216   }
    00217
    00223   virtual void OnInvalidateData(int data = 0, bool gui_scope = true)
    00224   {
    00225     if (!gui_scope) return;
    00226     this->vscroll->SetCount(this->CountLines());
    00227   }
    00228 };
    00229
    00230 static const NWidgetPart _nested_subsidies_list_widgets[] = {
    00231   NWidget(NWID_HORIZONTAL),
    00232     NWidget(WWT_CLOSEBOX, COLOUR_BROWN),
    00233     NWidget(WWT_CAPTION, COLOUR_BROWN), SetDataTip(STR_SUBSIDIES_CAPTION, STR_TOOLTIP_WINDOW_TITLE_DRAG_THIS),
    00234     NWidget(WWT_SHADEBOX, COLOUR_BROWN),
    00235     NWidget(WWT_STICKYBOX, COLOUR_BROWN),
    00236   EndContainer(),
    00237   NWidget(NWID_HORIZONTAL),
    00238     NWidget(WWT_PANEL, COLOUR_BROWN, SLW_PANEL), SetDataTip(0x0, STR_SUBSIDIES_TOOLTIP_CLICK_ON_SERVICE_TO_CENTER), SetResize(1, 1), SetScrollbar(SLW_SCROLLBAR), EndContainer(),
    00239     NWidget(NWID_VERTICAL),
    00240       NWidget(NWID_VSCROLLBAR, COLOUR_BROWN, SLW_SCROLLBAR),
    00241       NWidget(WWT_RESIZEBOX, COLOUR_BROWN),
    00242     EndContainer(),
    00243   EndContainer(),
    00244 };
    00245
    00246 static const WindowDesc _subsidies_list_desc(
    00247   WDP_AUTO, 500, 127,
    00248   WC_SUBSIDIES_LIST, WC_NONE,
    00249   0,
    00250   _nested_subsidies_list_widgets, lengthof(_nested_subsidies_list_widgets)
    00251 );
    00252
    00253
    00254 void ShowSubsidiesList()
    00255 {
    00256   AllocateWindowDescFront<SubsidyListWindow>(&_subsidies_list_desc, 0);
    00257 }