src/subsidy_gui.cpp

   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 subsidy_gui.cpp GUI for subsidies. */
  11
  12 #include "stdafx.h"
  13 #include "industry.h"
  14 #include "town.h"
  15 #include "window_gui.h"
  16 #include "strings_func.h"
  17 #include "date_func.h"
  18 #include "viewport_func.h"
  19 #include "gui.h"
  20 #include "subsidy_func.h"
  21 #include "subsidy_base.h"
  22 #include "core/geometry_func.hpp"
  23
  24 #include "widgets/subsidy_widget.h"
  25
  26 #include "table/strings.h"
  27
  28 struct SubsidyListWindow : Window {
  29         Scrollbar *vscroll;
  30
  31         SubsidyListWindow(WindowDesc *desc, WindowNumber window_number) : Window(desc)
  32         {
  33                 this->CreateNestedTree();
  34                 this->vscroll = this->GetScrollbar(WID_SUL_SCROLLBAR);
  35                 this->FinishInitNested(window_number);
  36                 this->OnInvalidateData(0);
  37         }
  38
  39         virtual void OnClick(Point pt, int widget, int click_count)
  40         {
  41                 if (widget != WID_SUL_PANEL) return;
  42
  43                 int y = this->vscroll->GetScrolledRowFromWidget(pt.y, this, WID_SUL_PANEL, WD_FRAMERECT_TOP);
  44                 int num = 0;
  45                 const Subsidy *s;
  46                 FOR_ALL_SUBSIDIES(s) {
  47                         if (!s->IsAwarded()) {
  48                                 y--;
  49                                 if (y == 0) {
  50                                         this->HandleClick(s);
  51                                         return;
  52                                 }
  53                                 num++;
  54                         }
  55                 }
  56
  57                 if (num == 0) {
  58                         y--; // "None"
  59                         if (y < 0) return;
  60                 }
  61
  62                 y -= 2; // "Services already subsidised:"
  63                 if (y < 0) return;
  64
  65                 FOR_ALL_SUBSIDIES(s) {
  66                         if (s->IsAwarded()) {
  67                                 y--;
  68                                 if (y == 0) {
  69                                         this->HandleClick(s);
  70                                         return;
  71                                 }
  72                         }
  73                 }
  74         }
  75
  76         void HandleClick(const Subsidy *s)
  77         {
  78                 /* determine src coordinate for subsidy and try to scroll to it */
  79                 TileIndex xy;
  80                 switch (s->src_type) {
  81                         case ST_INDUSTRY: xy = Industry::Get(s->src)->location.tile; break;
  82                         case ST_TOWN:     xy =     Town::Get(s->src)->xy; break;
  83                         default: NOT_REACHED();
  84                 }
  85
  86                 if (_ctrl_pressed || !ScrollMainWindowToTile(xy)) {
  87                         if (_ctrl_pressed) ShowExtraViewPortWindow(xy);
  88
  89                         /* otherwise determine dst coordinate for subsidy and scroll to it */
  90                         switch (s->dst_type) {
  91                                 case ST_INDUSTRY: xy = Industry::Get(s->dst)->location.tile; break;
  92                                 case ST_TOWN:     xy =     Town::Get(s->dst)->xy; break;
  93                                 default: NOT_REACHED();
  94                         }
  95
  96                         if (_ctrl_pressed) {
  97                                 ShowExtraViewPortWindow(xy);
  98                         } else {
  99                                 ScrollMainWindowToTile(xy);
 100                         }
 101                 }
 102         }
 103
 104         /**
 105          * Count the number of lines in this window.
 106          * @return the number of lines
 107          */
 108         uint CountLines()
 109         {
 110                 /* Count number of (non) awarded subsidies */
 111                 uint num_awarded = 0;
 112                 uint num_not_awarded = 0;
 113                 const Subsidy *s;
 114                 FOR_ALL_SUBSIDIES(s) {
 115                         if (!s->IsAwarded()) {
 116                                 num_not_awarded++;
 117                         } else {
 118                                 num_awarded++;
 119                         }
 120                 }
 121
 122                 /* Count the 'none' lines */
 123                 if (num_awarded     == 0) num_awarded = 1;
 124                 if (num_not_awarded == 0) num_not_awarded = 1;
 125
 126                 /* Offered, accepted and an empty line before the accepted ones. */
 127                 return 3 + num_awarded + num_not_awarded;
 128         }
 129
 130         virtual void UpdateWidgetSize(int widget, Dimension *size, const Dimension &padding, Dimension *fill, Dimension *resize)
 131         {
 132                 if (widget != WID_SUL_PANEL) return;
 133                 Dimension d = maxdim(GetStringBoundingBox(STR_SUBSIDIES_OFFERED_TITLE), GetStringBoundingBox(STR_SUBSIDIES_SUBSIDISED_TITLE));
 134
 135                 resize->height = d.height;
 136
 137                 d.height *= 5;
 138                 d.width += padding.width + WD_FRAMERECT_RIGHT + WD_FRAMERECT_LEFT;
 139                 d.height += padding.height + WD_FRAMERECT_TOP + WD_FRAMERECT_BOTTOM;
 140                 *size = maxdim(*size, d);
 141         }
 142
 143         virtual void DrawWidget(const Rect &r, int widget) const
 144         {
 145                 if (widget != WID_SUL_PANEL) return;
 146
 147                 YearMonthDay ymd;
 148                 ConvertDateToYMD(_date, &ymd);
 149
 150                 int right = r.right - WD_FRAMERECT_RIGHT;
 151                 int y = r.top + WD_FRAMERECT_TOP;
 152                 int x = r.left + WD_FRAMERECT_LEFT;
 153
 154                 int pos = -this->vscroll->GetPosition();
 155                 const int cap = this->vscroll->GetCapacity();
 156
 157                 /* Section for drawing the offered subsidies */
 158                 if (IsInsideMM(pos, 0, cap)) DrawString(x, right, y + pos * FONT_HEIGHT_NORMAL, STR_SUBSIDIES_OFFERED_TITLE);
 159                 pos++;
 160
 161                 uint num = 0;
 162                 const Subsidy *s;
 163                 FOR_ALL_SUBSIDIES(s) {
 164                         if (!s->IsAwarded()) {
 165                                 if (IsInsideMM(pos, 0, cap)) {
 166                                         /* Displays the two offered towns */
 167                                         SetupSubsidyDecodeParam(s, true);
 168                                         SetDParam(7, _date - ymd.day + s->remaining * 32);
 169                                         DrawString(x, right, y + pos * FONT_HEIGHT_NORMAL, STR_SUBSIDIES_OFFERED_FROM_TO);
 170                                 }
 171                                 pos++;
 172                                 num++;
 173                         }
 174                 }
 175
 176                 if (num == 0) {
 177                         if (IsInsideMM(pos, 0, cap)) DrawString(x, right, y + pos * FONT_HEIGHT_NORMAL, STR_SUBSIDIES_NONE);
 178                         pos++;
 179                 }
 180
 181                 /* Section for drawing the already granted subsidies */
 182                 pos++;
 183                 if (IsInsideMM(pos, 0, cap)) DrawString(x, right, y + pos * FONT_HEIGHT_NORMAL, STR_SUBSIDIES_SUBSIDISED_TITLE);
 184                 pos++;
 185                 num = 0;
 186
 187                 FOR_ALL_SUBSIDIES(s) {
 188                         if (s->IsAwarded()) {
 189                                 if (IsInsideMM(pos, 0, cap)) {
 190                                         SetupSubsidyDecodeParam(s, true);
 191                                         SetDParam(7, s->awarded);
 192                                         SetDParam(8, _date - ymd.day + s->remaining * 32);
 193
 194                                         /* Displays the two connected stations */
 195                                         DrawString(x, right, y + pos * FONT_HEIGHT_NORMAL, STR_SUBSIDIES_SUBSIDISED_FROM_TO);
 196                                 }
 197                                 pos++;
 198                                 num++;
 199                         }
 200                 }
 201
 202                 if (num == 0) {
 203                         if (IsInsideMM(pos, 0, cap)) DrawString(x, right, y + pos * FONT_HEIGHT_NORMAL, STR_SUBSIDIES_NONE);
 204                         pos++;
 205                 }
 206         }
 207
 208         virtual void OnResize()
 209         {
 210                 this->vscroll->SetCapacityFromWidget(this, WID_SUL_PANEL);
 211         }
 212
 213         /**
 214          * Some data on this window has become invalid.
 215          * @param data Information about the changed data.
 216          * @param gui_scope Whether the call is done from GUI scope. You may not do everything when not in GUI scope. See #InvalidateWindowData() for details.
 217          */
 218         virtual void OnInvalidateData(int data = 0, bool gui_scope = true)
 219         {
 220                 if (!gui_scope) return;
 221                 this->vscroll->SetCount(this->CountLines());
 222         }
 223 };
 224
 225 static const NWidgetPart _nested_subsidies_list_widgets[] = {
 226         NWidget(NWID_HORIZONTAL),
 227                 NWidget(WWT_CLOSEBOX, COLOUR_BROWN),
 228                 NWidget(WWT_CAPTION, COLOUR_BROWN), SetDataTip(STR_SUBSIDIES_CAPTION, STR_TOOLTIP_WINDOW_TITLE_DRAG_THIS),
 229                 NWidget(WWT_SHADEBOX, COLOUR_BROWN),
 230                 NWidget(WWT_DEFSIZEBOX, COLOUR_BROWN),
 231                 NWidget(WWT_STICKYBOX, COLOUR_BROWN),
 232         EndContainer(),
 233         NWidget(NWID_HORIZONTAL),
 234                 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(),
 235                 NWidget(NWID_VERTICAL),
 236                         NWidget(NWID_VSCROLLBAR, COLOUR_BROWN, WID_SUL_SCROLLBAR),
 237                         NWidget(WWT_RESIZEBOX, COLOUR_BROWN),
 238                 EndContainer(),
 239         EndContainer(),
 240 };
 241
 242 static WindowDesc _subsidies_list_desc(
 243         WDP_AUTO, "list_subsidies", 500, 127,
 244         WC_SUBSIDIES_LIST, WC_NONE,
 245         0,
 246         _nested_subsidies_list_widgets, lengthof(_nested_subsidies_list_widgets)
 247 );
 248
 249
 250 void ShowSubsidiesList()
 251 {
 252         AllocateWindowDescFront<SubsidyListWindow>(&_subsidies_list_desc, 0);
 253 }