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 "gui.h"
00020 #include "subsidy_func.h"
00021 #include "subsidy_base.h"
00022 #include "core/geometry_func.hpp"
00023 
00024 #include "widgets/subsidy_widget.h"
00025 
00026 #include "table/strings.h"
00027 
00028 struct SubsidyListWindow : Window {
00029   Scrollbar *vscroll;
00030 
00031   SubsidyListWindow(WindowDesc *desc, WindowNumber window_number) : Window(desc)
00032   {
00033     this->CreateNestedTree();
00034     this->vscroll = this->GetScrollbar(WID_SUL_SCROLLBAR);
00035     this->FinishInitNested(window_number);
00036     this->OnInvalidateData(0);
00037   }
00038 
00039   virtual void OnClick(Point pt, int widget, int click_count)
00040   {
00041     if (widget != WID_SUL_PANEL) return;
00042 
00043     int y = this->vscroll->GetScrolledRowFromWidget(pt.y, this, WID_SUL_PANEL, WD_FRAMERECT_TOP);
00044     int num = 0;
00045     const Subsidy *s;
00046     FOR_ALL_SUBSIDIES(s) {
00047       if (!s->IsAwarded()) {
00048         y--;
00049         if (y == 0) {
00050           this->HandleClick(s);
00051           return;
00052         }
00053         num++;
00054       }
00055     }
00056 
00057     if (num == 0) {
00058       y--; // "None"
00059       if (y < 0) return;
00060     }
00061 
00062     y -= 2; // "Services already subsidised:"
00063     if (y < 0) return;
00064 
00065     FOR_ALL_SUBSIDIES(s) {
00066       if (s->IsAwarded()) {
00067         y--;
00068         if (y == 0) {
00069           this->HandleClick(s);
00070           return;
00071         }
00072       }
00073     }
00074   }
00075 
00076   void HandleClick(const Subsidy *s)
00077   {
00078     /* determine src coordinate for subsidy and try to scroll to it */
00079     TileIndex xy;
00080     switch (s->src_type) {
00081       case ST_INDUSTRY: xy = Industry::Get(s->src)->location.tile; break;
00082       case ST_TOWN:     xy =     Town::Get(s->src)->xy; break;
00083       default: NOT_REACHED();
00084     }
00085 
00086     if (_ctrl_pressed || !ScrollMainWindowToTile(xy)) {
00087       if (_ctrl_pressed) ShowExtraViewPortWindow(xy);
00088 
00089       /* otherwise determine dst coordinate for subsidy and scroll to it */
00090       switch (s->dst_type) {
00091         case ST_INDUSTRY: xy = Industry::Get(s->dst)->location.tile; break;
00092         case ST_TOWN:     xy =     Town::Get(s->dst)->xy; break;
00093         default: NOT_REACHED();
00094       }
00095 
00096       if (_ctrl_pressed) {
00097         ShowExtraViewPortWindow(xy);
00098       } else {
00099         ScrollMainWindowToTile(xy);
00100       }
00101     }
00102   }
00103 
00108   uint CountLines()
00109   {
00110     /* Count number of (non) awarded subsidies */
00111     uint num_awarded = 0;
00112     uint num_not_awarded = 0;
00113     const Subsidy *s;
00114     FOR_ALL_SUBSIDIES(s) {
00115       if (!s->IsAwarded()) {
00116         num_not_awarded++;
00117       } else {
00118         num_awarded++;
00119       }
00120     }
00121 
00122     /* Count the 'none' lines */
00123     if (num_awarded     == 0) num_awarded = 1;
00124     if (num_not_awarded == 0) num_not_awarded = 1;
00125 
00126     /* Offered, accepted and an empty line before the accepted ones. */
00127     return 3 + num_awarded + num_not_awarded;
00128   }
00129 
00130   virtual void UpdateWidgetSize(int widget, Dimension *size, const Dimension &padding, Dimension *fill, Dimension *resize)
00131   {
00132     if (widget != WID_SUL_PANEL) return;
00133     Dimension d = maxdim(GetStringBoundingBox(STR_SUBSIDIES_OFFERED_TITLE), GetStringBoundingBox(STR_SUBSIDIES_SUBSIDISED_TITLE));
00134 
00135     resize->height = d.height;
00136 
00137     d.height *= 5;
00138     d.width += padding.width + WD_FRAMERECT_RIGHT + WD_FRAMERECT_LEFT;
00139     d.height += padding.height + WD_FRAMERECT_TOP + WD_FRAMERECT_BOTTOM;
00140     *size = maxdim(*size, d);
00141   }
00142 
00143   virtual void DrawWidget(const Rect &r, int widget) const
00144   {
00145     if (widget != WID_SUL_PANEL) return;
00146 
00147     YearMonthDay ymd;
00148     ConvertDateToYMD(_date, &ymd);
00149 
00150     int right = r.right - WD_FRAMERECT_RIGHT;
00151     int y = r.top + WD_FRAMERECT_TOP;
00152     int x = r.left + WD_FRAMERECT_LEFT;
00153 
00154     int pos = -this->vscroll->GetPosition();
00155     const int cap = this->vscroll->GetCapacity();
00156 
00157     /* Section for drawing the offered subsidies */
00158     if (IsInsideMM(pos, 0, cap)) DrawString(x, right, y + pos * FONT_HEIGHT_NORMAL, STR_SUBSIDIES_OFFERED_TITLE);
00159     pos++;
00160 
00161     uint num = 0;
00162     const Subsidy *s;
00163     FOR_ALL_SUBSIDIES(s) {
00164       if (!s->IsAwarded()) {
00165         if (IsInsideMM(pos, 0, cap)) {
00166           /* Displays the two offered towns */
00167           SetupSubsidyDecodeParam(s, true);
00168           SetDParam(7, _date - ymd.day + s->remaining * 32);
00169           DrawString(x, right, y + pos * FONT_HEIGHT_NORMAL, STR_SUBSIDIES_OFFERED_FROM_TO);
00170         }
00171         pos++;
00172         num++;
00173       }
00174     }
00175 
00176     if (num == 0) {
00177       if (IsInsideMM(pos, 0, cap)) DrawString(x, right, y + pos * FONT_HEIGHT_NORMAL, STR_SUBSIDIES_NONE);
00178       pos++;
00179     }
00180 
00181     /* Section for drawing the already granted subsidies */
00182     pos++;
00183     if (IsInsideMM(pos, 0, cap)) DrawString(x, right, y + pos * FONT_HEIGHT_NORMAL, STR_SUBSIDIES_SUBSIDISED_TITLE);
00184     pos++;
00185     num = 0;
00186 
00187     FOR_ALL_SUBSIDIES(s) {
00188       if (s->IsAwarded()) {
00189         if (IsInsideMM(pos, 0, cap)) {
00190           SetupSubsidyDecodeParam(s, true);
00191           SetDParam(7, s->awarded);
00192           SetDParam(8, _date - ymd.day + s->remaining * 32);
00193 
00194           /* Displays the two connected stations */
00195           DrawString(x, right, y + pos * FONT_HEIGHT_NORMAL, STR_SUBSIDIES_SUBSIDISED_FROM_TO);
00196         }
00197         pos++;
00198         num++;
00199       }
00200     }
00201 
00202     if (num == 0) {
00203       if (IsInsideMM(pos, 0, cap)) DrawString(x, right, y + pos * FONT_HEIGHT_NORMAL, STR_SUBSIDIES_NONE);
00204       pos++;
00205     }
00206   }
00207 
00208   virtual void OnResize()
00209   {
00210     this->vscroll->SetCapacityFromWidget(this, WID_SUL_PANEL);
00211   }
00212 
00218   virtual void OnInvalidateData(int data = 0, bool gui_scope = true)
00219   {
00220     if (!gui_scope) return;
00221     this->vscroll->SetCount(this->CountLines());
00222   }
00223 };
00224 
00225 static const NWidgetPart _nested_subsidies_list_widgets[] = {
00226   NWidget(NWID_HORIZONTAL),
00227     NWidget(WWT_CLOSEBOX, COLOUR_BROWN),
00228     NWidget(WWT_CAPTION, COLOUR_BROWN), SetDataTip(STR_SUBSIDIES_CAPTION, STR_TOOLTIP_WINDOW_TITLE_DRAG_THIS),
00229     NWidget(WWT_SHADEBOX, COLOUR_BROWN),
00230     NWidget(WWT_DEFSIZEBOX, COLOUR_BROWN),
00231     NWidget(WWT_STICKYBOX, COLOUR_BROWN),
00232   EndContainer(),
00233   NWidget(NWID_HORIZONTAL),
00234     NWidget(WWT_PANEL, COLOUR_BROWN, WID_SUL_PANEL), SetDataTip(0x0, STR_SUBSIDIES_TOOLTIP_CLICK_ON_SERVICE_TO_CENTER), SetResize(1, 1), SetScrollbar(WID_SUL_SCROLLBAR), EndContainer(),
00235     NWidget(NWID_VERTICAL),
00236       NWidget(NWID_VSCROLLBAR, COLOUR_BROWN, WID_SUL_SCROLLBAR),
00237       NWidget(WWT_RESIZEBOX, COLOUR_BROWN),
00238     EndContainer(),
00239   EndContainer(),
00240 };
00241 
00242 static WindowDesc _subsidies_list_desc(
00243   WDP_AUTO, "list_subsidies", 500, 127,
00244   WC_SUBSIDIES_LIST, WC_NONE,
00245   0,
00246   _nested_subsidies_list_widgets, lengthof(_nested_subsidies_list_widgets)
00247 );
00248 
00249 
00250 void ShowSubsidiesList()
00251 {
00252   AllocateWindowDescFront<SubsidyListWindow>(&_subsidies_list_desc, 0);
00253 }