src/town_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 town_gui.cpp GUI for towns. */
  11
  12 #include "stdafx.h"
  13 #include "town.h"
  14 #include "viewport_func.h"
  15 #include "error.h"
  16 #include "gui.h"
  17 #include "command_func.h"
  18 #include "company_func.h"
  19 #include "company_base.h"
  20 #include "company_gui.h"
  21 #include "network/network.h"
  22 #include "string_func.h"
  23 #include "strings_func.h"
  24 #include "sound_func.h"
  25 #include "tilehighlight_func.h"
  26 #include "sortlist_type.h"
  27 #include "road_cmd.h"
  28 #include "landscape.h"
  29 #include "querystring_gui.h"
  30 #include "window_func.h"
  31 #include "townname_func.h"
  32 #include "core/geometry_func.hpp"
  33 #include "genworld.h"
  34 #include "widgets/dropdown_func.h"
  35
  36 #include "widgets/town_widget.h"
  37
  38 #include "table/strings.h"
  39
  40 #include "safeguards.h"
  41
  42 typedef GUIList<const Town*> GUITownList;
  43
  44 static const NWidgetPart _nested_town_authority_widgets[] = {
  45         NWidget(NWID_HORIZONTAL),
  46                 NWidget(WWT_CLOSEBOX, COLOUR_BROWN),
  47                 NWidget(WWT_CAPTION, COLOUR_BROWN, WID_TA_CAPTION), SetDataTip(STR_LOCAL_AUTHORITY_CAPTION, STR_TOOLTIP_WINDOW_TITLE_DRAG_THIS),
  48                 NWidget(WWT_SHADEBOX, COLOUR_BROWN),
  49                 NWidget(WWT_DEFSIZEBOX, COLOUR_BROWN),
  50                 NWidget(WWT_STICKYBOX, COLOUR_BROWN),
  51         EndContainer(),
  52         NWidget(WWT_PANEL, COLOUR_BROWN, WID_TA_RATING_INFO), SetMinimalSize(317, 92), SetResize(1, 1), EndContainer(),
  53         NWidget(NWID_HORIZONTAL),
  54                 NWidget(WWT_PANEL, COLOUR_BROWN, WID_TA_COMMAND_LIST), SetMinimalSize(305, 52), SetResize(1, 0), SetDataTip(0x0, STR_LOCAL_AUTHORITY_ACTIONS_TOOLTIP), SetScrollbar(WID_TA_SCROLLBAR), EndContainer(),
  55                 NWidget(NWID_VSCROLLBAR, COLOUR_BROWN, WID_TA_SCROLLBAR),
  56         EndContainer(),
  57         NWidget(WWT_PANEL, COLOUR_BROWN, WID_TA_ACTION_INFO), SetMinimalSize(317, 52), SetResize(1, 0), EndContainer(),
  58         NWidget(NWID_HORIZONTAL),
  59                 NWidget(WWT_PUSHTXTBTN, COLOUR_BROWN, WID_TA_EXECUTE),  SetMinimalSize(317, 12), SetResize(1, 0), SetFill(1, 0), SetDataTip(STR_LOCAL_AUTHORITY_DO_IT_BUTTON, STR_LOCAL_AUTHORITY_DO_IT_TOOLTIP),
  60                 NWidget(WWT_RESIZEBOX, COLOUR_BROWN),
  61         EndContainer()
  62 };
  63
  64 /** Town authority window. */
  65 struct TownAuthorityWindow : Window {
  66 private:
  67         Town *town;    ///< Town being displayed.
  68         int sel_index; ///< Currently selected town action, \c 0 to \c TACT_COUNT-1, \c -1 means no action selected.
  69         Scrollbar *vscroll;
  70         uint displayed_actions_on_previous_painting; ///< Actions that were available on the previous call to OnPaint()
  71
  72         /**
  73          * Get the position of the Nth set bit.
  74          *
  75          * If there is no Nth bit set return -1
  76          *
  77          * @param bits The value to search in
  78          * @param n The Nth set bit from which we want to know the position
  79          * @return The position of the Nth set bit
  80          */
  81         static int GetNthSetBit(uint32 bits, int n)
  82         {
  83                 if (n >= 0) {
  84                         uint i;
  85                         FOR_EACH_SET_BIT(i, bits) {
  86                                 n--;
  87                                 if (n < 0) return i;
  88                         }
  89                 }
  90                 return -1;
  91         }
  92
  93 public:
  94         TownAuthorityWindow(WindowDesc *desc, WindowNumber window_number) : Window(desc), sel_index(-1), displayed_actions_on_previous_painting(0)
  95         {
  96                 this->town = Town::Get(window_number);
  97                 this->InitNested(window_number);
  98                 this->vscroll = this->GetScrollbar(WID_TA_SCROLLBAR);
  99                 this->vscroll->SetCapacity((this->GetWidget<NWidgetBase>(WID_TA_COMMAND_LIST)->current_y - WD_FRAMERECT_TOP - WD_FRAMERECT_BOTTOM) / FONT_HEIGHT_NORMAL);
 100         }
 101
 102         virtual void OnPaint()
 103         {
 104                 int numact;
 105                 uint buttons = GetMaskOfTownActions(&numact, _local_company, this->town);
 106                 if (buttons != displayed_actions_on_previous_painting) this->SetDirty();
 107                 displayed_actions_on_previous_painting = buttons;
 108
 109                 this->vscroll->SetCount(numact + 1);
 110
 111                 if (this->sel_index != -1 && !HasBit(buttons, this->sel_index)) {
 112                         this->sel_index = -1;
 113                 }
 114
 115                 this->SetWidgetDisabledState(WID_TA_EXECUTE, this->sel_index == -1);
 116
 117                 this->DrawWidgets();
 118                 if (!this->IsShaded()) this->DrawRatings();
 119         }
 120
 121         /** Draw the contents of the ratings panel. May request a resize of the window if the contents does not fit. */
 122         void DrawRatings()
 123         {
 124                 NWidgetBase *nwid = this->GetWidget<NWidgetBase>(WID_TA_RATING_INFO);
 125                 uint left = nwid->pos_x + WD_FRAMERECT_LEFT;
 126                 uint right = nwid->pos_x + nwid->current_x - 1 - WD_FRAMERECT_RIGHT;
 127
 128                 uint y = nwid->pos_y + WD_FRAMERECT_TOP;
 129
 130                 DrawString(left, right, y, STR_LOCAL_AUTHORITY_COMPANY_RATINGS);
 131                 y += FONT_HEIGHT_NORMAL;
 132
 133                 Dimension icon_size = GetSpriteSize(SPR_COMPANY_ICON);
 134                 int icon_width      = icon_size.width;
 135                 int icon_y_offset   = (FONT_HEIGHT_NORMAL - icon_size.height) / 2;
 136
 137                 Dimension exclusive_size = GetSpriteSize(SPR_EXCLUSIVE_TRANSPORT);
 138                 int exclusive_width      = exclusive_size.width;
 139                 int exclusive_y_offset   = (FONT_HEIGHT_NORMAL - exclusive_size.height) / 2;
 140
 141                 bool rtl = _current_text_dir == TD_RTL;
 142                 uint text_left      = left  + (rtl ? 0 : icon_width + exclusive_width + 4);
 143                 uint text_right     = right - (rtl ? icon_width + exclusive_width + 4 : 0);
 144                 uint icon_left      = rtl ? right - icon_width : left;
 145                 uint exclusive_left = rtl ? right - icon_width - exclusive_width - 2 : left + icon_width + 2;
 146
 147                 /* Draw list of companies */
 148                 const Company *c;
 149                 FOR_ALL_COMPANIES(c) {
 150                         if ((HasBit(this->town->have_ratings, c->index) || this->town->exclusivity == c->index)) {
 151                                 DrawCompanyIcon(c->index, icon_left, y + icon_y_offset);
 152
 153                                 SetDParam(0, c->index);
 154                                 SetDParam(1, c->index);
 155
 156                                 int r = this->town->ratings[c->index];
 157                                 StringID str;
 158                                 (str = STR_CARGO_RATING_APPALLING, r <= RATING_APPALLING) || // Apalling
 159                                 (str++,                    r <= RATING_VERYPOOR)  || // Very Poor
 160                                 (str++,                    r <= RATING_POOR)      || // Poor
 161                                 (str++,                    r <= RATING_MEDIOCRE)  || // Mediocore
 162                                 (str++,                    r <= RATING_GOOD)      || // Good
 163                                 (str++,                    r <= RATING_VERYGOOD)  || // Very Good
 164                                 (str++,                    r <= RATING_EXCELLENT) || // Excellent
 165                                 (str++,                    true);                    // Outstanding
 166
 167                                 SetDParam(2, str);
 168                                 if (this->town->exclusivity == c->index) {
 169                                         DrawSprite(SPR_EXCLUSIVE_TRANSPORT, COMPANY_SPRITE_COLOUR(c->index), exclusive_left, y + exclusive_y_offset);
 170                                 }
 171
 172                                 DrawString(text_left, text_right, y, STR_LOCAL_AUTHORITY_COMPANY_RATING);
 173                                 y += FONT_HEIGHT_NORMAL;
 174                         }
 175                 }
 176
 177                 y = y + WD_FRAMERECT_BOTTOM - nwid->pos_y; // Compute needed size of the widget.
 178                 if (y > nwid->current_y) {
 179                         /* If the company list is too big to fit, mark ourself dirty and draw again. */
 180                         ResizeWindow(this, 0, y - nwid->current_y, false);
 181                 }
 182         }
 183
 184         virtual void SetStringParameters(int widget) const
 185         {
 186                 if (widget == WID_TA_CAPTION) SetDParam(0, this->window_number);
 187         }
 188
 189         virtual void DrawWidget(const Rect &r, int widget) const
 190         {
 191                 switch (widget) {
 192                         case WID_TA_ACTION_INFO:
 193                                 if (this->sel_index != -1) {
 194                                         SetDParam(0, _price[PR_TOWN_ACTION] * _town_action_costs[this->sel_index] >> 8);
 195                                         DrawStringMultiLine(r.left + WD_FRAMERECT_LEFT, r.right - WD_FRAMERECT_RIGHT, r.top + WD_FRAMERECT_TOP, r.bottom - WD_FRAMERECT_BOTTOM,
 196                                                                 STR_LOCAL_AUTHORITY_ACTION_TOOLTIP_SMALL_ADVERTISING + this->sel_index);
 197                                 }
 198                                 break;
 199                         case WID_TA_COMMAND_LIST: {
 200                                 int numact;
 201                                 uint buttons = GetMaskOfTownActions(&numact, _local_company, this->town);
 202                                 int y = r.top + WD_FRAMERECT_TOP;
 203                                 int pos = this->vscroll->GetPosition();
 204
 205                                 if (--pos < 0) {
 206                                         DrawString(r.left + WD_FRAMERECT_LEFT, r.right - WD_FRAMERECT_RIGHT, y, STR_LOCAL_AUTHORITY_ACTIONS_TITLE);
 207                                         y += FONT_HEIGHT_NORMAL;
 208                                 }
 209
 210                                 for (int i = 0; buttons; i++, buttons >>= 1) {
 211                                         if (pos <= -5) break; ///< Draw only the 5 fitting lines
 212
 213                                         if ((buttons & 1) && --pos < 0) {
 214                                                 DrawString(r.left + WD_FRAMERECT_LEFT, r.right - WD_FRAMERECT_RIGHT, y,
 215                                                                 STR_LOCAL_AUTHORITY_ACTION_SMALL_ADVERTISING_CAMPAIGN + i, this->sel_index == i ? TC_WHITE : TC_ORANGE);
 216                                                 y += FONT_HEIGHT_NORMAL;
 217                                         }
 218                                 }
 219                                 break;
 220                         }
 221                 }
 222         }
 223
 224         virtual void UpdateWidgetSize(int widget, Dimension *size, const Dimension &padding, Dimension *fill, Dimension *resize)
 225         {
 226                 switch (widget) {
 227                         case WID_TA_ACTION_INFO: {
 228                                 assert(size->width > padding.width && size->height > padding.height);
 229                                 size->width -= WD_FRAMERECT_LEFT + WD_FRAMERECT_RIGHT;
 230                                 size->height -= WD_FRAMERECT_TOP + WD_FRAMERECT_BOTTOM;
 231                                 Dimension d = {0, 0};
 232                                 for (int i = 0; i < TACT_COUNT; i++) {
 233                                         SetDParam(0, _price[PR_TOWN_ACTION] * _town_action_costs[i] >> 8);
 234                                         d = maxdim(d, GetStringMultiLineBoundingBox(STR_LOCAL_AUTHORITY_ACTION_TOOLTIP_SMALL_ADVERTISING + i, *size));
 235                                 }
 236                                 *size = maxdim(*size, d);
 237                                 size->width += WD_FRAMERECT_LEFT + WD_FRAMERECT_RIGHT;
 238                                 size->height += WD_FRAMERECT_TOP + WD_FRAMERECT_BOTTOM;
 239                                 break;
 240                         }
 241
 242                         case WID_TA_COMMAND_LIST:
 243                                 size->height = WD_FRAMERECT_TOP + 5 * FONT_HEIGHT_NORMAL + WD_FRAMERECT_BOTTOM;
 244                                 size->width = GetStringBoundingBox(STR_LOCAL_AUTHORITY_ACTIONS_TITLE).width;
 245                                 for (uint i = 0; i < TACT_COUNT; i++ ) {
 246                                         size->width = max(size->width, GetStringBoundingBox(STR_LOCAL_AUTHORITY_ACTION_SMALL_ADVERTISING_CAMPAIGN + i).width);
 247                                 }
 248                                 size->width += WD_FRAMERECT_LEFT + WD_FRAMERECT_RIGHT;
 249                                 break;
 250
 251                         case WID_TA_RATING_INFO:
 252                                 resize->height = FONT_HEIGHT_NORMAL;
 253                                 size->height = WD_FRAMERECT_TOP + 9 * FONT_HEIGHT_NORMAL + WD_FRAMERECT_BOTTOM;
 254                                 break;
 255                 }
 256         }
 257
 258         virtual void OnClick(Point pt, int widget, int click_count)
 259         {
 260                 switch (widget) {
 261                         case WID_TA_COMMAND_LIST: {
 262                                 int y = this->GetRowFromWidget(pt.y, WID_TA_COMMAND_LIST, 1, FONT_HEIGHT_NORMAL);
 263                                 if (!IsInsideMM(y, 0, 5)) return;
 264
 265                                 y = GetNthSetBit(GetMaskOfTownActions(NULL, _local_company, this->town), y + this->vscroll->GetPosition() - 1);
 266                                 if (y >= 0) {
 267                                         this->sel_index = y;
 268                                         this->SetDirty();
 269                                 }
 270                                 /* FALL THROUGH, when double-clicking. */
 271                                 if (click_count == 1 || y < 0) break;
 272                         }
 273
 274                         case WID_TA_EXECUTE:
 275                                 DoCommandP(this->town->xy, this->window_number, this->sel_index, CMD_DO_TOWN_ACTION | CMD_MSG(STR_ERROR_CAN_T_DO_THIS));
 276                                 break;
 277                 }
 278         }
 279
 280         virtual void OnHundredthTick()
 281         {
 282                 this->SetDirty();
 283         }
 284 };
 285
 286 static WindowDesc _town_authority_desc(
 287         WDP_AUTO, "view_town_authority", 317, 222,
 288         WC_TOWN_AUTHORITY, WC_NONE,
 289         0,
 290         _nested_town_authority_widgets, lengthof(_nested_town_authority_widgets)
 291 );
 292
 293 static void ShowTownAuthorityWindow(uint town)
 294 {
 295         AllocateWindowDescFront<TownAuthorityWindow>(&_town_authority_desc, town);
 296 }
 297
 298
 299 /* Town view window. */
 300 struct TownViewWindow : Window {
 301 private:
 302         Town *town; ///< Town displayed by the window.
 303
 304 public:
 305         static const int WID_TV_HEIGHT_NORMAL = 150;
 306
 307         TownViewWindow(WindowDesc *desc, WindowNumber window_number) : Window(desc)
 308         {
 309                 this->CreateNestedTree();
 310
 311                 this->town = Town::Get(window_number);
 312                 if (this->town->larger_town) this->GetWidget<NWidgetCore>(WID_TV_CAPTION)->widget_data = STR_TOWN_VIEW_CITY_CAPTION;
 313
 314                 this->FinishInitNested(window_number);
 315
 316                 this->flags |= WF_DISABLE_VP_SCROLL;
 317                 NWidgetViewport *nvp = this->GetWidget<NWidgetViewport>(WID_TV_VIEWPORT);
 318                 nvp->InitializeViewport(this, this->town->xy, ZOOM_LVL_NEWS);
 319
 320                 /* disable renaming town in network games if you are not the server */
 321                 this->SetWidgetDisabledState(WID_TV_CHANGE_NAME, _networking && !_network_server);
 322         }
 323
 324         virtual void SetStringParameters(int widget) const
 325         {
 326                 if (widget == WID_TV_CAPTION) SetDParam(0, this->town->index);
 327         }
 328
 329         virtual void DrawWidget(const Rect &r, int widget) const
 330         {
 331                 if (widget != WID_TV_INFO) return;
 332
 333                 uint y = r.top + WD_FRAMERECT_TOP;
 334
 335                 SetDParam(0, this->town->cache.population);
 336                 SetDParam(1, this->town->cache.num_houses);
 337                 DrawString(r.left + WD_FRAMERECT_LEFT, r.right - WD_FRAMERECT_LEFT, y, STR_TOWN_VIEW_POPULATION_HOUSES);
 338
 339                 SetDParam(0, this->town->supplied[CT_PASSENGERS].old_act);
 340                 SetDParam(1, this->town->supplied[CT_PASSENGERS].old_max);
 341                 DrawString(r.left + WD_FRAMERECT_LEFT, r.right - WD_FRAMERECT_LEFT, y += FONT_HEIGHT_NORMAL, STR_TOWN_VIEW_PASSENGERS_LAST_MONTH_MAX);
 342
 343                 SetDParam(0, this->town->supplied[CT_MAIL].old_act);
 344                 SetDParam(1, this->town->supplied[CT_MAIL].old_max);
 345                 DrawString(r.left + WD_FRAMERECT_LEFT, r.right - WD_FRAMERECT_LEFT, y += FONT_HEIGHT_NORMAL, STR_TOWN_VIEW_MAIL_LAST_MONTH_MAX);
 346
 347                 bool first = true;
 348                 for (int i = TE_BEGIN; i < TE_END; i++) {
 349                         if (this->town->goal[i] == 0) continue;
 350                         if (this->town->goal[i] == TOWN_GROWTH_WINTER && (TileHeight(this->town->xy) < LowestSnowLine() || this->town->cache.population <= 90)) continue;
 351                         if (this->town->goal[i] == TOWN_GROWTH_DESERT && (GetTropicZone(this->town->xy) != TROPICZONE_DESERT || this->town->cache.population <= 60)) continue;
 352
 353                         if (first) {
 354                                 DrawString(r.left + WD_FRAMERECT_LEFT, r.right - WD_FRAMERECT_LEFT, y += FONT_HEIGHT_NORMAL, STR_TOWN_VIEW_CARGO_FOR_TOWNGROWTH);
 355                                 first = false;
 356                         }
 357
 358                         bool rtl = _current_text_dir == TD_RTL;
 359                         uint cargo_text_left = r.left + WD_FRAMERECT_LEFT + (rtl ? 0 : 20);
 360                         uint cargo_text_right = r.right - WD_FRAMERECT_RIGHT - (rtl ? 20 : 0);
 361
 362                         const CargoSpec *cargo = FindFirstCargoWithTownEffect((TownEffect)i);
 363                         assert(cargo != NULL);
 364
 365                         StringID string;
 366
 367                         if (this->town->goal[i] == TOWN_GROWTH_DESERT || this->town->goal[i] == TOWN_GROWTH_WINTER) {
 368                                 /* For 'original' gameplay, don't show the amount required (you need 1 or more ..) */
 369                                 string = STR_TOWN_VIEW_CARGO_FOR_TOWNGROWTH_DELIVERED_GENERAL;
 370                                 if (this->town->received[i].old_act == 0) {
 371                                         string = STR_TOWN_VIEW_CARGO_FOR_TOWNGROWTH_REQUIRED_GENERAL;
 372
 373                                         if (this->town->goal[i] == TOWN_GROWTH_WINTER && TileHeight(this->town->xy) < GetSnowLine()) {
 374                                                 string = STR_TOWN_VIEW_CARGO_FOR_TOWNGROWTH_REQUIRED_WINTER;
 375                                         }
 376                                 }
 377
 378                                 SetDParam(0, cargo->name);
 379                         } else {
 380                                 string = STR_TOWN_VIEW_CARGO_FOR_TOWNGROWTH_DELIVERED;
 381                                 if (this->town->received[i].old_act < this->town->goal[i]) {
 382                                         string = STR_TOWN_VIEW_CARGO_FOR_TOWNGROWTH_REQUIRED;
 383                                 }
 384
 385                                 SetDParam(0, cargo->Index());
 386                                 SetDParam(1, this->town->received[i].old_act);
 387                                 SetDParam(2, cargo->Index());
 388                                 SetDParam(3, this->town->goal[i]);
 389                         }
 390                         DrawString(cargo_text_left, cargo_text_right, y += FONT_HEIGHT_NORMAL, string);
 391                 }
 392
 393                 if (HasBit(this->town->flags, TOWN_IS_GROWING)) {
 394                         SetDParam(0, ((this->town->growth_rate & (~TOWN_GROW_RATE_CUSTOM)) * TOWN_GROWTH_TICKS + DAY_TICKS) / DAY_TICKS);
 395                         DrawString(r.left + WD_FRAMERECT_LEFT, r.right - WD_FRAMERECT_LEFT, y += FONT_HEIGHT_NORMAL, this->town->fund_buildings_months == 0 ? STR_TOWN_VIEW_TOWN_GROWS_EVERY : STR_TOWN_VIEW_TOWN_GROWS_EVERY_FUNDED);
 396                 } else {
 397                         DrawString(r.left + WD_FRAMERECT_LEFT, r.right - WD_FRAMERECT_LEFT, y += FONT_HEIGHT_NORMAL, STR_TOWN_VIEW_TOWN_GROW_STOPPED);
 398                 }
 399
 400                 /* only show the town noise, if the noise option is activated. */
 401                 if (_settings_game.economy.station_noise_level) {
 402                         SetDParam(0, this->town->noise_reached);
 403                         SetDParam(1, this->town->MaxTownNoise());
 404                         DrawString(r.left + WD_FRAMERECT_LEFT, r.right - WD_FRAMERECT_LEFT, y += FONT_HEIGHT_NORMAL, STR_TOWN_VIEW_NOISE_IN_TOWN);
 405                 }
 406
 407                 if (this->town->text != NULL) {
 408                         SetDParamStr(0, this->town->text);
 409                         DrawStringMultiLine(r.left + WD_FRAMERECT_LEFT, r.right - WD_FRAMERECT_RIGHT, y += FONT_HEIGHT_NORMAL, UINT16_MAX, STR_JUST_RAW_STRING, TC_BLACK);
 410                 }
 411         }
 412
 413         virtual void OnClick(Point pt, int widget, int click_count)
 414         {
 415                 switch (widget) {
 416                         case WID_TV_CENTER_VIEW: // scroll to location
 417                                 if (_ctrl_pressed) {
 418                                         ShowExtraViewPortWindow(this->town->xy);
 419                                 } else {
 420                                         ScrollMainWindowToTile(this->town->xy);
 421                                 }
 422                                 break;
 423
 424                         case WID_TV_SHOW_AUTHORITY: // town authority
 425                                 ShowTownAuthorityWindow(this->window_number);
 426                                 break;
 427
 428                         case WID_TV_CHANGE_NAME: // rename
 429                                 SetDParam(0, this->window_number);
 430                                 ShowQueryString(STR_TOWN_NAME, STR_TOWN_VIEW_RENAME_TOWN_BUTTON, MAX_LENGTH_TOWN_NAME_CHARS, this, CS_ALPHANUMERAL, QSF_ENABLE_DEFAULT | QSF_LEN_IN_CHARS);
 431                                 break;
 432
 433                         case WID_TV_EXPAND: { // expand town - only available on Scenario editor
 434                                 /* Warn the user if towns are not allowed to build roads, but do this only once per OpenTTD run. */
 435                                 static bool _warn_town_no_roads = false;
 436
 437                                 if (!_settings_game.economy.allow_town_roads && !_warn_town_no_roads) {
 438                                         ShowErrorMessage(STR_ERROR_TOWN_EXPAND_WARN_NO_ROADS, INVALID_STRING_ID, WL_WARNING);
 439                                         _warn_town_no_roads = true;
 440                                 }
 441
 442                                 DoCommandP(0, this->window_number, 0, CMD_EXPAND_TOWN | CMD_MSG(STR_ERROR_CAN_T_EXPAND_TOWN));
 443                                 break;
 444                         }
 445
 446                         case WID_TV_DELETE: // delete town - only available on Scenario editor
 447                                 DoCommandP(0, this->window_number, 0, CMD_DELETE_TOWN | CMD_MSG(STR_ERROR_TOWN_CAN_T_DELETE));
 448                                 break;
 449                 }
 450         }
 451
 452         virtual void UpdateWidgetSize(int widget, Dimension *size, const Dimension &padding, Dimension *fill, Dimension *resize)
 453         {
 454                 switch (widget) {
 455                         case WID_TV_INFO:
 456                                 size->height = GetDesiredInfoHeight(size->width);
 457                                 break;
 458                 }
 459         }
 460
 461         /**
 462          * Gets the desired height for the information panel.
 463          * @return the desired height in pixels.
 464          */
 465         uint GetDesiredInfoHeight(int width) const
 466         {
 467                 uint aimed_height = 3 * FONT_HEIGHT_NORMAL + WD_FRAMERECT_TOP + WD_FRAMERECT_BOTTOM;
 468
 469                 bool first = true;
 470                 for (int i = TE_BEGIN; i < TE_END; i++) {
 471                         if (this->town->goal[i] == 0) continue;
 472                         if (this->town->goal[i] == TOWN_GROWTH_WINTER && (TileHeight(this->town->xy) < LowestSnowLine() || this->town->cache.population <= 90)) continue;
 473                         if (this->town->goal[i] == TOWN_GROWTH_DESERT && (GetTropicZone(this->town->xy) != TROPICZONE_DESERT || this->town->cache.population <= 60)) continue;
 474
 475                         if (first) {
 476                                 aimed_height += FONT_HEIGHT_NORMAL;
 477                                 first = false;
 478                         }
 479                         aimed_height += FONT_HEIGHT_NORMAL;
 480                 }
 481                 aimed_height += FONT_HEIGHT_NORMAL;
 482
 483                 if (_settings_game.economy.station_noise_level) aimed_height += FONT_HEIGHT_NORMAL;
 484
 485                 if (this->town->text != NULL) {
 486                         SetDParamStr(0, this->town->text);
 487                         aimed_height += GetStringHeight(STR_JUST_RAW_STRING, width - WD_FRAMERECT_LEFT - WD_FRAMERECT_RIGHT);
 488                 }
 489
 490                 return aimed_height;
 491         }
 492
 493         void ResizeWindowAsNeeded()
 494         {
 495                 const NWidgetBase *nwid_info = this->GetWidget<NWidgetBase>(WID_TV_INFO);
 496                 uint aimed_height = GetDesiredInfoHeight(nwid_info->current_x);
 497                 if (aimed_height > nwid_info->current_y || (aimed_height < nwid_info->current_y && nwid_info->current_y > nwid_info->smallest_y)) {
 498                         this->ReInit();
 499                 }
 500         }
 501
 502         virtual void OnResize()
 503         {
 504                 if (this->viewport != NULL) {
 505                         NWidgetViewport *nvp = this->GetWidget<NWidgetViewport>(WID_TV_VIEWPORT);
 506                         nvp->UpdateViewportCoordinates(this);
 507
 508                         ScrollWindowToTile(this->town->xy, this, true); // Re-center viewport.
 509                 }
 510         }
 511
 512         /**
 513          * Some data on this window has become invalid.
 514          * @param data Information about the changed data.
 515          * @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.
 516          */
 517         virtual void OnInvalidateData(int data = 0, bool gui_scope = true)
 518         {
 519                 if (!gui_scope) return;
 520                 /* Called when setting station noise or required cargoes have changed, in order to resize the window */
 521                 this->SetDirty(); // refresh display for current size. This will allow to avoid glitches when downgrading
 522                 this->ResizeWindowAsNeeded();
 523         }
 524
 525         virtual void OnQueryTextFinished(char *str)
 526         {
 527                 if (str == NULL) return;
 528
 529                 DoCommandP(0, this->window_number, 0, CMD_RENAME_TOWN | CMD_MSG(STR_ERROR_CAN_T_RENAME_TOWN), NULL, str);
 530         }
 531 };
 532
 533 static const NWidgetPart _nested_town_game_view_widgets[] = {
 534         NWidget(NWID_HORIZONTAL),
 535                 NWidget(WWT_CLOSEBOX, COLOUR_BROWN),
 536                 NWidget(WWT_CAPTION, COLOUR_BROWN, WID_TV_CAPTION), SetDataTip(STR_TOWN_VIEW_TOWN_CAPTION, STR_TOOLTIP_WINDOW_TITLE_DRAG_THIS),
 537                 NWidget(WWT_SHADEBOX, COLOUR_BROWN),
 538                 NWidget(WWT_DEFSIZEBOX, COLOUR_BROWN),
 539                 NWidget(WWT_STICKYBOX, COLOUR_BROWN),
 540         EndContainer(),
 541         NWidget(WWT_PANEL, COLOUR_BROWN),
 542                 NWidget(WWT_INSET, COLOUR_BROWN), SetPadding(2, 2, 2, 2),
 543                         NWidget(NWID_VIEWPORT, INVALID_COLOUR, WID_TV_VIEWPORT), SetMinimalSize(254, 86), SetFill(1, 0), SetResize(1, 1), SetPadding(1, 1, 1, 1),
 544                 EndContainer(),
 545         EndContainer(),
 546         NWidget(WWT_PANEL, COLOUR_BROWN, WID_TV_INFO), SetMinimalSize(260, 32), SetResize(1, 0), SetFill(1, 0), EndContainer(),
 547         NWidget(NWID_HORIZONTAL),
 548                 NWidget(NWID_HORIZONTAL, NC_EQUALSIZE),
 549                         NWidget(WWT_PUSHTXTBTN, COLOUR_BROWN, WID_TV_CENTER_VIEW), SetMinimalSize(80, 12), SetFill(1, 1), SetResize(1, 0), SetDataTip(STR_BUTTON_LOCATION, STR_TOWN_VIEW_CENTER_TOOLTIP),
 550                         NWidget(WWT_PUSHTXTBTN, COLOUR_BROWN, WID_TV_SHOW_AUTHORITY), SetMinimalSize(80, 12), SetFill(1, 1), SetResize(1, 0), SetDataTip(STR_TOWN_VIEW_LOCAL_AUTHORITY_BUTTON, STR_TOWN_VIEW_LOCAL_AUTHORITY_TOOLTIP),
 551                         NWidget(WWT_PUSHTXTBTN, COLOUR_BROWN, WID_TV_CHANGE_NAME), SetMinimalSize(80, 12), SetFill(1, 1), SetResize(1, 0), SetDataTip(STR_BUTTON_RENAME, STR_TOWN_VIEW_RENAME_TOOLTIP),
 552                 EndContainer(),
 553                 NWidget(WWT_RESIZEBOX, COLOUR_BROWN),
 554         EndContainer(),
 555 };
 556
 557 static WindowDesc _town_game_view_desc(
 558         WDP_AUTO, "view_town", 260, TownViewWindow::WID_TV_HEIGHT_NORMAL,
 559         WC_TOWN_VIEW, WC_NONE,
 560         0,
 561         _nested_town_game_view_widgets, lengthof(_nested_town_game_view_widgets)
 562 );
 563
 564 static const NWidgetPart _nested_town_editor_view_widgets[] = {
 565         NWidget(NWID_HORIZONTAL),
 566                 NWidget(WWT_CLOSEBOX, COLOUR_BROWN),
 567                 NWidget(WWT_CAPTION, COLOUR_BROWN, WID_TV_CAPTION), SetDataTip(STR_TOWN_VIEW_TOWN_CAPTION, STR_TOOLTIP_WINDOW_TITLE_DRAG_THIS),
 568                 NWidget(WWT_PUSHTXTBTN, COLOUR_BROWN, WID_TV_CHANGE_NAME), SetMinimalSize(76, 14), SetDataTip(STR_BUTTON_RENAME, STR_TOWN_VIEW_RENAME_TOOLTIP),
 569                 NWidget(WWT_SHADEBOX, COLOUR_BROWN),
 570                 NWidget(WWT_DEFSIZEBOX, COLOUR_BROWN),
 571                 NWidget(WWT_STICKYBOX, COLOUR_BROWN),
 572         EndContainer(),
 573         NWidget(WWT_PANEL, COLOUR_BROWN),
 574                 NWidget(WWT_INSET, COLOUR_BROWN), SetPadding(2, 2, 2, 2),
 575                         NWidget(NWID_VIEWPORT, INVALID_COLOUR, WID_TV_VIEWPORT), SetMinimalSize(254, 86), SetFill(1, 1), SetResize(1, 1), SetPadding(1, 1, 1, 1),
 576                 EndContainer(),
 577         EndContainer(),
 578         NWidget(WWT_PANEL, COLOUR_BROWN, WID_TV_INFO), SetMinimalSize(260, 32), SetResize(1, 0), SetFill(1, 0), EndContainer(),
 579         NWidget(NWID_HORIZONTAL),
 580                 NWidget(NWID_HORIZONTAL, NC_EQUALSIZE),
 581                         NWidget(WWT_PUSHTXTBTN, COLOUR_BROWN, WID_TV_CENTER_VIEW), SetMinimalSize(80, 12), SetFill(1, 1), SetResize(1, 0), SetDataTip(STR_BUTTON_LOCATION, STR_TOWN_VIEW_CENTER_TOOLTIP),
 582                         NWidget(WWT_PUSHTXTBTN, COLOUR_BROWN, WID_TV_EXPAND), SetMinimalSize(80, 12), SetFill(1, 1), SetResize(1, 0), SetDataTip(STR_TOWN_VIEW_EXPAND_BUTTON, STR_TOWN_VIEW_EXPAND_TOOLTIP),
 583                         NWidget(WWT_PUSHTXTBTN, COLOUR_BROWN, WID_TV_DELETE), SetMinimalSize(80, 12), SetFill(1, 1), SetResize(1, 0), SetDataTip(STR_TOWN_VIEW_DELETE_BUTTON, STR_TOWN_VIEW_DELETE_TOOLTIP),
 584                 EndContainer(),
 585                 NWidget(WWT_RESIZEBOX, COLOUR_BROWN),
 586         EndContainer(),
 587 };
 588
 589 static WindowDesc _town_editor_view_desc(
 590         WDP_AUTO, "view_town_scen", 260, TownViewWindow::WID_TV_HEIGHT_NORMAL,
 591         WC_TOWN_VIEW, WC_NONE,
 592         0,
 593         _nested_town_editor_view_widgets, lengthof(_nested_town_editor_view_widgets)
 594 );
 595
 596 void ShowTownViewWindow(TownID town)
 597 {
 598         if (_game_mode == GM_EDITOR) {
 599                 AllocateWindowDescFront<TownViewWindow>(&_town_editor_view_desc, town);
 600         } else {
 601                 AllocateWindowDescFront<TownViewWindow>(&_town_game_view_desc, town);
 602         }
 603 }
 604
 605 static const NWidgetPart _nested_town_directory_widgets[] = {
 606         NWidget(NWID_HORIZONTAL),
 607                 NWidget(WWT_CLOSEBOX, COLOUR_BROWN),
 608                 NWidget(WWT_CAPTION, COLOUR_BROWN), SetDataTip(STR_TOWN_DIRECTORY_CAPTION, STR_TOOLTIP_WINDOW_TITLE_DRAG_THIS),
 609                 NWidget(WWT_SHADEBOX, COLOUR_BROWN),
 610                 NWidget(WWT_DEFSIZEBOX, COLOUR_BROWN),
 611                 NWidget(WWT_STICKYBOX, COLOUR_BROWN),
 612         EndContainer(),
 613         NWidget(NWID_HORIZONTAL),
 614                 NWidget(NWID_VERTICAL),
 615                         NWidget(NWID_HORIZONTAL),
 616                                 NWidget(WWT_TEXTBTN, COLOUR_BROWN, WID_TD_SORT_ORDER), SetDataTip(STR_BUTTON_SORT_BY, STR_TOOLTIP_SORT_ORDER),
 617                                 NWidget(WWT_DROPDOWN, COLOUR_BROWN, WID_TD_SORT_CRITERIA), SetDataTip(STR_JUST_STRING, STR_TOOLTIP_SORT_CRITERIA),
 618                                 NWidget(WWT_PANEL, COLOUR_BROWN), SetResize(1, 0), EndContainer(),
 619                         EndContainer(),
 620                         NWidget(WWT_PANEL, COLOUR_BROWN, WID_TD_LIST), SetMinimalSize(196, 0), SetDataTip(0x0, STR_TOWN_DIRECTORY_LIST_TOOLTIP),
 621                                                         SetFill(1, 0), SetResize(0, 10), SetScrollbar(WID_TD_SCROLLBAR), EndContainer(),
 622                         NWidget(WWT_PANEL, COLOUR_BROWN),
 623                                 NWidget(WWT_TEXT, COLOUR_BROWN, WID_TD_WORLD_POPULATION), SetPadding(2, 0, 0, 2), SetMinimalSize(196, 12), SetFill(1, 0), SetDataTip(STR_TOWN_POPULATION, STR_NULL),
 624                         EndContainer(),
 625                 EndContainer(),
 626                 NWidget(NWID_VERTICAL),
 627                         NWidget(NWID_VSCROLLBAR, COLOUR_BROWN, WID_TD_SCROLLBAR),
 628                         NWidget(WWT_RESIZEBOX, COLOUR_BROWN),
 629                 EndContainer(),
 630         EndContainer(),
 631 };
 632
 633 /** Town directory window class. */
 634 struct TownDirectoryWindow : public Window {
 635 private:
 636         /* Runtime saved values */
 637         static Listing last_sorting;
 638         static const Town *last_town;
 639
 640         /* Constants for sorting towns */
 641         static const StringID sorter_names[];
 642         static GUITownList::SortFunction * const sorter_funcs[];
 643
 644         GUITownList towns;
 645
 646         Scrollbar *vscroll;
 647
 648         void BuildSortTownList()
 649         {
 650                 if (this->towns.NeedRebuild()) {
 651                         this->towns.Clear();
 652
 653                         const Town *t;
 654                         FOR_ALL_TOWNS(t) {
 655                                 *this->towns.Append() = t;
 656                         }
 657
 658                         this->towns.Compact();
 659                         this->towns.RebuildDone();
 660                         this->vscroll->SetCount(this->towns.Length()); // Update scrollbar as well.
 661                 }
 662                 /* Always sort the towns. */
 663                 this->last_town = NULL;
 664                 this->towns.Sort();
 665                 this->SetWidgetDirty(WID_TD_LIST); // Force repaint of the displayed towns.
 666         }
 667
 668         /** Sort by town name */
 669         static int CDECL TownNameSorter(const Town * const *a, const Town * const *b)
 670         {
 671                 static char buf_cache[64];
 672                 const Town *ta = *a;
 673                 const Town *tb = *b;
 674                 char buf[64];
 675
 676                 SetDParam(0, ta->index);
 677                 GetString(buf, STR_TOWN_NAME, lastof(buf));
 678
 679                 /* If 'b' is the same town as in the last round, use the cached value
 680                  * We do this to speed stuff up ('b' is called with the same value a lot of
 681                  * times after each other) */
 682                 if (tb != last_town) {
 683                         last_town = tb;
 684                         SetDParam(0, tb->index);
 685                         GetString(buf_cache, STR_TOWN_NAME, lastof(buf_cache));
 686                 }
 687
 688                 return strnatcmp(buf, buf_cache); // Sort by name (natural sorting).
 689         }
 690
 691         /** Sort by population (default descending, as big towns are of the most interest). */
 692         static int CDECL TownPopulationSorter(const Town * const *a, const Town * const *b)
 693         {
 694                 uint32 a_population = (*a)->cache.population;
 695                 uint32 b_population = (*b)->cache.population;
 696                 if (a_population == b_population) return TownDirectoryWindow::TownNameSorter(a, b);
 697                 return (a_population < b_population) ? -1 : 1;
 698         }
 699
 700         /** Sort by town rating */
 701         static int CDECL TownRatingSorter(const Town * const *a, const Town * const *b)
 702         {
 703                 int before = TownDirectoryWindow::last_sorting.order ? 1 : -1; // Value to get 'a' before 'b'.
 704
 705                 /* Towns without rating are always after towns with rating. */
 706                 if (HasBit((*a)->have_ratings, _local_company)) {
 707                         if (HasBit((*b)->have_ratings, _local_company)) {
 708                                 int16 a_rating = (*a)->ratings[_local_company];
 709                                 int16 b_rating = (*b)->ratings[_local_company];
 710                                 if (a_rating == b_rating) return TownDirectoryWindow::TownNameSorter(a, b);
 711                                 return (a_rating < b_rating) ? -1 : 1;
 712                         }
 713                         return before;
 714                 }
 715                 if (HasBit((*b)->have_ratings, _local_company)) return -before;
 716                 return -before * TownDirectoryWindow::TownNameSorter(a, b); // Sort unrated towns always on ascending town name.
 717         }
 718
 719 public:
 720         TownDirectoryWindow(WindowDesc *desc) : Window(desc)
 721         {
 722                 this->CreateNestedTree();
 723
 724                 this->vscroll = this->GetScrollbar(WID_TD_SCROLLBAR);
 725
 726                 this->towns.SetListing(this->last_sorting);
 727                 this->towns.SetSortFuncs(TownDirectoryWindow::sorter_funcs);
 728                 this->towns.ForceRebuild();
 729                 this->BuildSortTownList();
 730
 731                 this->FinishInitNested(0);
 732         }
 733
 734         virtual void SetStringParameters(int widget) const
 735         {
 736                 switch (widget) {
 737                         case WID_TD_WORLD_POPULATION:
 738                                 SetDParam(0, GetWorldPopulation());
 739                                 break;
 740
 741                         case WID_TD_SORT_CRITERIA:
 742                                 SetDParam(0, TownDirectoryWindow::sorter_names[this->towns.SortType()]);
 743                                 break;
 744                 }
 745         }
 746
 747         virtual void DrawWidget(const Rect &r, int widget) const
 748         {
 749                 switch (widget) {
 750                         case WID_TD_SORT_ORDER:
 751                                 this->DrawSortButtonState(widget, this->towns.IsDescSortOrder() ? SBS_DOWN : SBS_UP);
 752                                 break;
 753
 754                         case WID_TD_LIST: {
 755                                 int n = 0;
 756                                 int y = r.top + WD_FRAMERECT_TOP;
 757                                 if (this->towns.Length() == 0) { // No towns available.
 758                                         DrawString(r.left + WD_FRAMERECT_LEFT, r.right, y, STR_TOWN_DIRECTORY_NONE);
 759                                         break;
 760                                 }
 761
 762                                 /* At least one town available. */
 763                                 bool rtl = _current_text_dir == TD_RTL;
 764                                 Dimension icon_size = GetSpriteSize(SPR_TOWN_RATING_GOOD);
 765                                 int text_left  = r.left + WD_FRAMERECT_LEFT + (rtl ? 0 : icon_size.width + 2);
 766                                 int text_right = r.right - WD_FRAMERECT_RIGHT - (rtl ? icon_size.width + 2 : 0);
 767                                 int icon_x = rtl ? r.right - WD_FRAMERECT_RIGHT - icon_size.width : r.left + WD_FRAMERECT_LEFT;
 768
 769                                 for (uint i = this->vscroll->GetPosition(); i < this->towns.Length(); i++) {
 770                                         const Town *t = this->towns[i];
 771                                         assert(t->xy != INVALID_TILE);
 772
 773                                         /* Draw rating icon. */
 774                                         if (_game_mode == GM_EDITOR || !HasBit(t->have_ratings, _local_company)) {
 775                                                 DrawSprite(SPR_TOWN_RATING_NA, PAL_NONE, icon_x, y + (this->resize.step_height - icon_size.height) / 2);
 776                                         } else {
 777                                                 SpriteID icon = SPR_TOWN_RATING_APALLING;
 778                                                 if (t->ratings[_local_company] > RATING_VERYPOOR) icon = SPR_TOWN_RATING_MEDIOCRE;
 779                                                 if (t->ratings[_local_company] > RATING_GOOD)     icon = SPR_TOWN_RATING_GOOD;
 780                                                 DrawSprite(icon, PAL_NONE, icon_x, y + (this->resize.step_height - icon_size.height) / 2);
 781                                         }
 782
 783                                         SetDParam(0, t->index);
 784                                         SetDParam(1, t->cache.population);
 785                                         DrawString(text_left, text_right, y + (this->resize.step_height - FONT_HEIGHT_NORMAL) / 2, STR_TOWN_DIRECTORY_TOWN);
 786
 787                                         y += this->resize.step_height;
 788                                         if (++n == this->vscroll->GetCapacity()) break; // max number of towns in 1 window
 789                                 }
 790                                 break;
 791                         }
 792                 }
 793         }
 794
 795         virtual void UpdateWidgetSize(int widget, Dimension *size, const Dimension &padding, Dimension *fill, Dimension *resize)
 796         {
 797                 switch (widget) {
 798                         case WID_TD_SORT_ORDER: {
 799                                 Dimension d = GetStringBoundingBox(this->GetWidget<NWidgetCore>(widget)->widget_data);
 800                                 d.width += padding.width + Window::SortButtonWidth() * 2; // Doubled since the string is centred and it also looks better.
 801                                 d.height += padding.height;
 802                                 *size = maxdim(*size, d);
 803                                 break;
 804                         }
 805                         case WID_TD_SORT_CRITERIA: {
 806                                 Dimension d = {0, 0};
 807                                 for (uint i = 0; TownDirectoryWindow::sorter_names[i] != INVALID_STRING_ID; i++) {
 808                                         d = maxdim(d, GetStringBoundingBox(TownDirectoryWindow::sorter_names[i]));
 809                                 }
 810                                 d.width += padding.width;
 811                                 d.height += padding.height;
 812                                 *size = maxdim(*size, d);
 813                                 break;
 814                         }
 815                         case WID_TD_LIST: {
 816                                 Dimension d = GetStringBoundingBox(STR_TOWN_DIRECTORY_NONE);
 817                                 for (uint i = 0; i < this->towns.Length(); i++) {
 818                                         const Town *t = this->towns[i];
 819
 820                                         assert(t != NULL);
 821
 822                                         SetDParam(0, t->index);
 823                                         SetDParamMaxDigits(1, 8);
 824                                         d = maxdim(d, GetStringBoundingBox(STR_TOWN_DIRECTORY_TOWN));
 825                                 }
 826                                 Dimension icon_size = GetSpriteSize(SPR_TOWN_RATING_GOOD);
 827                                 d.width += icon_size.width + 2;
 828                                 d.height = max(d.height, icon_size.height);
 829                                 resize->height = d.height;
 830                                 d.height *= 5;
 831                                 d.width += padding.width + WD_FRAMERECT_LEFT + WD_FRAMERECT_RIGHT;
 832                                 d.height += padding.height + WD_FRAMERECT_TOP + WD_FRAMERECT_BOTTOM;
 833                                 *size = maxdim(*size, d);
 834                                 break;
 835                         }
 836                         case WID_TD_WORLD_POPULATION: {
 837                                 SetDParamMaxDigits(0, 10);
 838                                 Dimension d = GetStringBoundingBox(STR_TOWN_POPULATION);
 839                                 d.width += padding.width;
 840                                 d.height += padding.height;
 841                                 *size = maxdim(*size, d);
 842                                 break;
 843                         }
 844                 }
 845         }
 846
 847         virtual void OnClick(Point pt, int widget, int click_count)
 848         {
 849                 switch (widget) {
 850                         case WID_TD_SORT_ORDER: // Click on sort order button
 851                                 if (this->towns.SortType() != 2) { // A different sort than by rating.
 852                                         this->towns.ToggleSortOrder();
 853                                         this->last_sorting = this->towns.GetListing(); // Store new sorting order.
 854                                 } else {
 855                                         /* Some parts are always sorted ascending on name. */
 856                                         this->last_sorting.order = !this->last_sorting.order;
 857                                         this->towns.SetListing(this->last_sorting);
 858                                         this->towns.ForceResort();
 859                                         this->towns.Sort();
 860                                 }
 861                                 this->SetDirty();
 862                                 break;
 863
 864                         case WID_TD_SORT_CRITERIA: // Click on sort criteria dropdown
 865                                 ShowDropDownMenu(this, TownDirectoryWindow::sorter_names, this->towns.SortType(), WID_TD_SORT_CRITERIA, 0, 0);
 866                                 break;
 867
 868                         case WID_TD_LIST: { // Click on Town Matrix
 869                                 uint id_v = this->vscroll->GetScrolledRowFromWidget(pt.y, this, WID_TD_LIST, WD_FRAMERECT_TOP);
 870                                 if (id_v >= this->towns.Length()) return; // click out of town bounds
 871
 872                                 const Town *t = this->towns[id_v];
 873                                 assert(t != NULL);
 874                                 if (_ctrl_pressed) {
 875                                         ShowExtraViewPortWindow(t->xy);
 876                                 } else {
 877                                         ScrollMainWindowToTile(t->xy);
 878                                 }
 879                                 break;
 880                         }
 881                 }
 882         }
 883
 884         virtual void OnDropdownSelect(int widget, int index)
 885         {
 886                 if (widget != WID_TD_SORT_CRITERIA) return;
 887
 888                 if (this->towns.SortType() != index) {
 889                         this->towns.SetSortType(index);
 890                         this->last_sorting = this->towns.GetListing(); // Store new sorting order.
 891                         this->BuildSortTownList();
 892                 }
 893         }
 894
 895         virtual void OnPaint()
 896         {
 897                 if (this->towns.NeedRebuild()) this->BuildSortTownList();
 898                 this->DrawWidgets();
 899         }
 900
 901         virtual void OnHundredthTick()
 902         {
 903                 this->BuildSortTownList();
 904                 this->SetDirty();
 905         }
 906
 907         virtual void OnResize()
 908         {
 909                 this->vscroll->SetCapacityFromWidget(this, WID_TD_LIST);
 910         }
 911
 912         /**
 913          * Some data on this window has become invalid.
 914          * @param data Information about the changed data.
 915          * @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.
 916          */
 917         virtual void OnInvalidateData(int data = 0, bool gui_scope = true)
 918         {
 919                 if (data == 0) {
 920                         /* This needs to be done in command-scope to enforce rebuilding before resorting invalid data */
 921                         this->towns.ForceRebuild();
 922                 } else {
 923                         this->towns.ForceResort();
 924                 }
 925         }
 926 };
 927
 928 Listing TownDirectoryWindow::last_sorting = {false, 0};
 929 const Town *TownDirectoryWindow::last_town = NULL;
 930
 931 /** Names of the sorting functions. */
 932 const StringID TownDirectoryWindow::sorter_names[] = {
 933         STR_SORT_BY_NAME,
 934         STR_SORT_BY_POPULATION,
 935         STR_SORT_BY_RATING,
 936         INVALID_STRING_ID
 937 };
 938
 939 /** Available town directory sorting functions. */
 940 GUITownList::SortFunction * const TownDirectoryWindow::sorter_funcs[] = {
 941         &TownNameSorter,
 942         &TownPopulationSorter,
 943         &TownRatingSorter,
 944 };
 945
 946 static WindowDesc _town_directory_desc(
 947         WDP_AUTO, "list_towns", 208, 202,
 948         WC_TOWN_DIRECTORY, WC_NONE,
 949         0,
 950         _nested_town_directory_widgets, lengthof(_nested_town_directory_widgets)
 951 );
 952
 953 void ShowTownDirectory()
 954 {
 955         if (BringWindowToFrontById(WC_TOWN_DIRECTORY, 0)) return;
 956         new TownDirectoryWindow(&_town_directory_desc);
 957 }
 958
 959 void CcFoundTown(const CommandCost &result, TileIndex tile, uint32 p1, uint32 p2)
 960 {
 961         if (result.Failed()) return;
 962
 963         if (_settings_client.sound.confirm) SndPlayTileFx(SND_1F_SPLAT_OTHER, tile);
 964         if (!_settings_client.gui.persistent_buildingtools) ResetObjectToPlace();
 965 }
 966
 967 void CcFoundRandomTown(const CommandCost &result, TileIndex tile, uint32 p1, uint32 p2)
 968 {
 969         if (result.Succeeded()) ScrollMainWindowToTile(Town::Get(_new_town_id)->xy);
 970 }
 971
 972 static const NWidgetPart _nested_found_town_widgets[] = {
 973         NWidget(NWID_HORIZONTAL),
 974                 NWidget(WWT_CLOSEBOX, COLOUR_DARK_GREEN),
 975                 NWidget(WWT_CAPTION, COLOUR_DARK_GREEN), SetDataTip(STR_FOUND_TOWN_CAPTION, STR_TOOLTIP_WINDOW_TITLE_DRAG_THIS),
 976                 NWidget(WWT_SHADEBOX, COLOUR_DARK_GREEN),
 977                 NWidget(WWT_STICKYBOX, COLOUR_DARK_GREEN),
 978         EndContainer(),
 979         /* Construct new town(s) buttons. */
 980         NWidget(WWT_PANEL, COLOUR_DARK_GREEN),
 981                 NWidget(NWID_SPACER), SetMinimalSize(0, 2),
 982                 NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_TF_NEW_TOWN), SetMinimalSize(156, 12), SetFill(1, 0),
 983                                                                                 SetDataTip(STR_FOUND_TOWN_NEW_TOWN_BUTTON, STR_FOUND_TOWN_NEW_TOWN_TOOLTIP), SetPadding(0, 2, 1, 2),
 984                 NWidget(WWT_PUSHTXTBTN, COLOUR_GREY, WID_TF_RANDOM_TOWN), SetMinimalSize(156, 12), SetFill(1, 0),
 985                                                                                 SetDataTip(STR_FOUND_TOWN_RANDOM_TOWN_BUTTON, STR_FOUND_TOWN_RANDOM_TOWN_TOOLTIP), SetPadding(0, 2, 1, 2),
 986                 NWidget(WWT_PUSHTXTBTN, COLOUR_GREY, WID_TF_MANY_RANDOM_TOWNS), SetMinimalSize(156, 12), SetFill(1, 0),
 987                                                                                 SetDataTip(STR_FOUND_TOWN_MANY_RANDOM_TOWNS, STR_FOUND_TOWN_RANDOM_TOWNS_TOOLTIP), SetPadding(0, 2, 0, 2),
 988                 /* Town name selection. */
 989                 NWidget(WWT_LABEL, COLOUR_DARK_GREEN), SetMinimalSize(156, 14), SetPadding(0, 2, 0, 2), SetDataTip(STR_FOUND_TOWN_NAME_TITLE, STR_NULL),
 990                 NWidget(WWT_EDITBOX, COLOUR_GREY, WID_TF_TOWN_NAME_EDITBOX), SetMinimalSize(156, 12), SetPadding(0, 2, 3, 2),
 991                                                                                 SetDataTip(STR_FOUND_TOWN_NAME_EDITOR_TITLE, STR_FOUND_TOWN_NAME_EDITOR_HELP),
 992                 NWidget(WWT_PUSHTXTBTN, COLOUR_GREY, WID_TF_TOWN_NAME_RANDOM), SetMinimalSize(78, 12), SetPadding(0, 2, 0, 2), SetFill(1, 0),
 993                                                                                 SetDataTip(STR_FOUND_TOWN_NAME_RANDOM_BUTTON, STR_FOUND_TOWN_NAME_RANDOM_TOOLTIP),
 994                 /* Town size selection. */
 995                 NWidget(NWID_HORIZONTAL), SetPIP(2, 0, 2),
 996                         NWidget(NWID_SPACER), SetFill(1, 0),
 997                         NWidget(WWT_LABEL, COLOUR_DARK_GREEN), SetMinimalSize(148, 14), SetDataTip(STR_FOUND_TOWN_INITIAL_SIZE_TITLE, STR_NULL),
 998                         NWidget(NWID_SPACER), SetFill(1, 0),
 999                 EndContainer(),
1000                 NWidget(NWID_HORIZONTAL, NC_EQUALSIZE), SetPIP(2, 0, 2),
1001                         NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_TF_SIZE_SMALL), SetMinimalSize(78, 12), SetFill(1, 0),
1002                                                                                 SetDataTip(STR_FOUND_TOWN_INITIAL_SIZE_SMALL_BUTTON, STR_FOUND_TOWN_INITIAL_SIZE_TOOLTIP),
1003                         NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_TF_SIZE_MEDIUM), SetMinimalSize(78, 12), SetFill(1, 0),
1004                                                                                 SetDataTip(STR_FOUND_TOWN_INITIAL_SIZE_MEDIUM_BUTTON, STR_FOUND_TOWN_INITIAL_SIZE_TOOLTIP),
1005                 EndContainer(),
1006                 NWidget(NWID_SPACER), SetMinimalSize(0, 1),
1007                 NWidget(NWID_HORIZONTAL, NC_EQUALSIZE), SetPIP(2, 0, 2),
1008                         NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_TF_SIZE_LARGE), SetMinimalSize(78, 12), SetFill(1, 0),
1009                                                                                 SetDataTip(STR_FOUND_TOWN_INITIAL_SIZE_LARGE_BUTTON, STR_FOUND_TOWN_INITIAL_SIZE_TOOLTIP),
1010                         NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_TF_SIZE_RANDOM), SetMinimalSize(78, 12), SetFill(1, 0),
1011                                                                                 SetDataTip(STR_FOUND_TOWN_SIZE_RANDOM, STR_FOUND_TOWN_INITIAL_SIZE_TOOLTIP),
1012                 EndContainer(),
1013                 NWidget(NWID_SPACER), SetMinimalSize(0, 3),
1014                 NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_TF_CITY), SetPadding(0, 2, 0, 2), SetMinimalSize(156, 12), SetFill(1, 0),
1015                                                                                 SetDataTip(STR_FOUND_TOWN_CITY, STR_FOUND_TOWN_CITY_TOOLTIP), SetFill(1, 0),
1016                 /* Town roads selection. */
1017                 NWidget(NWID_HORIZONTAL), SetPIP(2, 0, 2),
1018                         NWidget(NWID_SPACER), SetFill(1, 0),
1019                         NWidget(WWT_LABEL, COLOUR_DARK_GREEN), SetMinimalSize(148, 14), SetDataTip(STR_FOUND_TOWN_ROAD_LAYOUT, STR_NULL),
1020                         NWidget(NWID_SPACER), SetFill(1, 0),
1021                 EndContainer(),
1022                 NWidget(NWID_HORIZONTAL, NC_EQUALSIZE), SetPIP(2, 0, 2),
1023                         NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_TF_LAYOUT_ORIGINAL), SetMinimalSize(78, 12), SetFill(1, 0), SetDataTip(STR_FOUND_TOWN_SELECT_LAYOUT_ORIGINAL, STR_FOUND_TOWN_SELECT_TOWN_ROAD_LAYOUT),
1024                         NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_TF_LAYOUT_BETTER), SetMinimalSize(78, 12), SetFill(1, 0), SetDataTip(STR_FOUND_TOWN_SELECT_LAYOUT_BETTER_ROADS, STR_FOUND_TOWN_SELECT_TOWN_ROAD_LAYOUT),
1025                 EndContainer(),
1026                 NWidget(NWID_SPACER), SetMinimalSize(0, 1),
1027                 NWidget(NWID_HORIZONTAL, NC_EQUALSIZE), SetPIP(2, 0, 2),
1028                         NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_TF_LAYOUT_GRID2), SetMinimalSize(78, 12), SetFill(1, 0), SetDataTip(STR_FOUND_TOWN_SELECT_LAYOUT_2X2_GRID, STR_FOUND_TOWN_SELECT_TOWN_ROAD_LAYOUT),
1029                         NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_TF_LAYOUT_GRID3), SetMinimalSize(78, 12), SetFill(1, 0), SetDataTip(STR_FOUND_TOWN_SELECT_LAYOUT_3X3_GRID, STR_FOUND_TOWN_SELECT_TOWN_ROAD_LAYOUT),
1030                 EndContainer(),
1031                 NWidget(NWID_SPACER), SetMinimalSize(0, 1),
1032                 NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_TF_LAYOUT_RANDOM), SetPadding(0, 2, 0, 2), SetMinimalSize(0, 12), SetFill(1, 0),
1033                                                                                 SetDataTip(STR_FOUND_TOWN_SELECT_LAYOUT_RANDOM, STR_FOUND_TOWN_SELECT_TOWN_ROAD_LAYOUT), SetFill(1, 0),
1034                 NWidget(NWID_SPACER), SetMinimalSize(0, 2),
1035         EndContainer(),
1036 };
1037
1038 /** Found a town window class. */
1039 struct FoundTownWindow : Window {
1040 private:
1041         TownSize town_size;     ///< Selected town size
1042         TownLayout town_layout; ///< Selected town layout
1043         bool city;              ///< Are we building a city?
1044         QueryString townname_editbox; ///< Townname editbox
1045         bool townnamevalid;     ///< Is generated town name valid?
1046         uint32 townnameparts;   ///< Generated town name
1047         TownNameParams params;  ///< Town name parameters
1048
1049 public:
1050         FoundTownWindow(WindowDesc *desc, WindowNumber window_number) :
1051                         Window(desc),
1052                         town_size(TSZ_MEDIUM),
1053                         town_layout(_settings_game.economy.town_layout),
1054                         townname_editbox(MAX_LENGTH_TOWN_NAME_CHARS * MAX_CHAR_LENGTH, MAX_LENGTH_TOWN_NAME_CHARS),
1055                         params(_settings_game.game_creation.town_name)
1056         {
1057                 this->InitNested(window_number);
1058                 this->querystrings[WID_TF_TOWN_NAME_EDITBOX] = &this->townname_editbox;
1059                 this->RandomTownName();
1060                 this->UpdateButtons(true);
1061         }
1062
1063         void RandomTownName()
1064         {
1065                 this->townnamevalid = GenerateTownName(&this->townnameparts);
1066
1067                 if (!this->townnamevalid) {
1068                         this->townname_editbox.text.DeleteAll();
1069                 } else {
1070                         GetTownName(this->townname_editbox.text.buf, &this->params, this->townnameparts, &this->townname_editbox.text.buf[this->townname_editbox.text.max_bytes - 1]);
1071                         this->townname_editbox.text.UpdateSize();
1072                 }
1073                 UpdateOSKOriginalText(this, WID_TF_TOWN_NAME_EDITBOX);
1074
1075                 this->SetWidgetDirty(WID_TF_TOWN_NAME_EDITBOX);
1076         }
1077
1078         void UpdateButtons(bool check_availability)
1079         {
1080                 if (check_availability && _game_mode != GM_EDITOR) {
1081                         this->SetWidgetsDisabledState(true, WID_TF_RANDOM_TOWN, WID_TF_MANY_RANDOM_TOWNS, WID_TF_SIZE_LARGE, WIDGET_LIST_END);
1082                         this->SetWidgetsDisabledState(_settings_game.economy.found_town != TF_CUSTOM_LAYOUT,
1083                                         WID_TF_LAYOUT_ORIGINAL, WID_TF_LAYOUT_BETTER, WID_TF_LAYOUT_GRID2, WID_TF_LAYOUT_GRID3, WID_TF_LAYOUT_RANDOM, WIDGET_LIST_END);
1084                         if (_settings_game.economy.found_town != TF_CUSTOM_LAYOUT) town_layout = _settings_game.economy.town_layout;
1085                 }
1086
1087                 for (int i = WID_TF_SIZE_SMALL; i <= WID_TF_SIZE_RANDOM; i++) {
1088                         this->SetWidgetLoweredState(i, i == WID_TF_SIZE_SMALL + this->town_size);
1089                 }
1090
1091                 this->SetWidgetLoweredState(WID_TF_CITY, this->city);
1092
1093                 for (int i = WID_TF_LAYOUT_ORIGINAL; i <= WID_TF_LAYOUT_RANDOM; i++) {
1094                         this->SetWidgetLoweredState(i, i == WID_TF_LAYOUT_ORIGINAL + this->town_layout);
1095                 }
1096
1097                 this->SetDirty();
1098         }
1099
1100         void ExecuteFoundTownCommand(TileIndex tile, bool random, StringID errstr, CommandCallback cc)
1101         {
1102                 const char *name = NULL;
1103
1104                 if (!this->townnamevalid) {
1105                         name = this->townname_editbox.text.buf;
1106                 } else {
1107                         /* If user changed the name, send it */
1108                         char buf[MAX_LENGTH_TOWN_NAME_CHARS * MAX_CHAR_LENGTH];
1109                         GetTownName(buf, &this->params, this->townnameparts, lastof(buf));
1110                         if (strcmp(buf, this->townname_editbox.text.buf) != 0) name = this->townname_editbox.text.buf;
1111                 }
1112
1113                 bool success = DoCommandP(tile, this->town_size | this->city << 2 | this->town_layout << 3 | random << 6,
1114                                 townnameparts, CMD_FOUND_TOWN | CMD_MSG(errstr), cc, name);
1115
1116                 /* Rerandomise name, if success and no cost-estimation. */
1117                 if (success && !_shift_pressed) this->RandomTownName();
1118         }
1119
1120         virtual void OnClick(Point pt, int widget, int click_count)
1121         {
1122                 switch (widget) {
1123                         case WID_TF_NEW_TOWN:
1124                                 HandlePlacePushButton(this, WID_TF_NEW_TOWN, SPR_CURSOR_TOWN, HT_RECT);
1125                                 break;
1126
1127                         case WID_TF_RANDOM_TOWN:
1128                                 this->ExecuteFoundTownCommand(0, true, STR_ERROR_CAN_T_GENERATE_TOWN, CcFoundRandomTown);
1129                                 break;
1130
1131                         case WID_TF_TOWN_NAME_RANDOM:
1132                                 this->RandomTownName();
1133                                 this->SetFocusedWidget(WID_TF_TOWN_NAME_EDITBOX);
1134                                 break;
1135
1136                         case WID_TF_MANY_RANDOM_TOWNS:
1137                                 _generating_world = true;
1138                                 UpdateNearestTownForRoadTiles(true);
1139                                 if (!GenerateTowns(this->town_layout)) {
1140                                         ShowErrorMessage(STR_ERROR_CAN_T_GENERATE_TOWN, STR_ERROR_NO_SPACE_FOR_TOWN, WL_INFO);
1141                                 }
1142                                 UpdateNearestTownForRoadTiles(false);
1143                                 _generating_world = false;
1144                                 break;
1145
1146                         case WID_TF_SIZE_SMALL: case WID_TF_SIZE_MEDIUM: case WID_TF_SIZE_LARGE: case WID_TF_SIZE_RANDOM:
1147                                 this->town_size = (TownSize)(widget - WID_TF_SIZE_SMALL);
1148                                 this->UpdateButtons(false);
1149                                 break;
1150
1151                         case WID_TF_CITY:
1152                                 this->city ^= true;
1153                                 this->SetWidgetLoweredState(WID_TF_CITY, this->city);
1154                                 this->SetDirty();
1155                                 break;
1156
1157                         case WID_TF_LAYOUT_ORIGINAL: case WID_TF_LAYOUT_BETTER: case WID_TF_LAYOUT_GRID2:
1158                         case WID_TF_LAYOUT_GRID3: case WID_TF_LAYOUT_RANDOM:
1159                                 this->town_layout = (TownLayout)(widget - WID_TF_LAYOUT_ORIGINAL);
1160                                 this->UpdateButtons(false);
1161                                 break;
1162                 }
1163         }
1164
1165         virtual void OnPlaceObject(Point pt, TileIndex tile)
1166         {
1167                 this->ExecuteFoundTownCommand(tile, false, STR_ERROR_CAN_T_FOUND_TOWN_HERE, CcFoundTown);
1168         }
1169
1170         virtual void OnPlaceObjectAbort()
1171         {
1172                 this->RaiseButtons();
1173                 this->UpdateButtons(false);
1174         }
1175
1176         /**
1177          * Some data on this window has become invalid.
1178          * @param data Information about the changed data.
1179          * @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.
1180          */
1181         virtual void OnInvalidateData(int data = 0, bool gui_scope = true)
1182         {
1183                 if (!gui_scope) return;
1184                 this->UpdateButtons(true);
1185         }
1186 };
1187
1188 static WindowDesc _found_town_desc(
1189         WDP_AUTO, "build_town", 160, 162,
1190         WC_FOUND_TOWN, WC_NONE,
1191         WDF_CONSTRUCTION,
1192         _nested_found_town_widgets, lengthof(_nested_found_town_widgets)
1193 );
1194
1195 void ShowFoundTownWindow()
1196 {
1197         if (_game_mode != GM_EDITOR && !Company::IsValidID(_local_company)) return;
1198         AllocateWindowDescFront<FoundTownWindow>(&_found_town_desc, 0);
1199 }