src/airport_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 airport_gui.cpp The GUI for airports. */
  11
  12 #include "stdafx.h"
  13 #include "window_gui.h"
  14 #include "station_gui.h"
  15 #include "terraform_gui.h"
  16 #include "sound_func.h"
  17 #include "window_func.h"
  18 #include "strings_func.h"
  19 #include "viewport_func.h"
  20 #include "company_func.h"
  21 #include "tilehighlight_func.h"
  22 #include "company_base.h"
  23 #include "station_type.h"
  24 #include "newgrf_airport.h"
  25 #include "newgrf_callbacks.h"
  26 #include "widgets/dropdown_type.h"
  27 #include "core/geometry_func.hpp"
  28 #include "hotkeys.h"
  29 #include "vehicle_func.h"
  30 #include "gui.h"
  31 #include "map/subcoord.h"
  32
  33 #include "widgets/airport_widget.h"
  34
  35
  36 static AirportClassID _selected_airport_class; ///< the currently visible airport class
  37 static int _selected_airport_index;            ///< the index of the selected airport in the current class or -1
  38 static byte _selected_airport_layout;          ///< selected airport layout number.
  39
  40 static void ShowBuildAirportPicker(Window *parent);
  41
  42 SpriteID GetCustomAirportSprite(const AirportSpec *as, byte layout);
  43
  44 void CcBuildAirport(const CommandCost &result, TileIndex tile, uint32 p1, uint32 p2)
  45 {
  46         if (result.Failed()) return;
  47
  48         if (_settings_client.sound.confirm) SndPlayTileFx(SND_1F_SPLAT_OTHER, tile);
  49         if (!_settings_client.gui.persistent_buildingtools) ResetPointerMode();
  50 }
  51
  52 /**
  53  * Place an airport.
  54  * @param tile Position to put the new airport.
  55  */
  56 static void PlaceAirport(TileIndex tile)
  57 {
  58         if (_selected_airport_index == -1) return;
  59         uint32 p2 = _ctrl_pressed;
  60         SB(p2, 16, 16, INVALID_STATION); // no station to join
  61
  62         uint32 p1 = AirportClass::Get(_selected_airport_class)->GetSpec(_selected_airport_index)->GetIndex();
  63         p1 |= _selected_airport_layout << 8;
  64         Command cmdcont (tile, p1, p2, CMD_BUILD_AIRPORT);
  65         ShowSelectStationIfNeeded (&cmdcont, TileArea(tile, _thd.size.x / TILE_SIZE, _thd.size.y / TILE_SIZE));
  66 }
  67
  68 /** Airport build toolbar window handler. */
  69 struct BuildAirToolbarWindow : Window {
  70         int last_user_action; // Last started user action.
  71
  72         BuildAirToolbarWindow (const WindowDesc *desc, WindowNumber window_number)
  73                 : Window (desc), last_user_action (WIDGET_LIST_END)
  74         {
  75                 this->InitNested(window_number);
  76                 if (_settings_client.gui.link_terraform_toolbar) ShowTerraformToolbar(this);
  77         }
  78
  79         void OnDelete (void) FINAL_OVERRIDE
  80         {
  81                 if (_settings_client.gui.link_terraform_toolbar) DeleteWindowById(WC_SCEN_LAND_GEN, 0, false);
  82         }
  83
  84         /**
  85          * Some data on this window has become invalid.
  86          * @param data Information about the changed data.
  87          * @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.
  88          */
  89         virtual void OnInvalidateData(int data = 0, bool gui_scope = true)
  90         {
  91                 if (!gui_scope) return;
  92
  93                 if (!CanBuildVehicleInfrastructure(VEH_AIRCRAFT)) this->Delete();
  94         }
  95
  96         virtual void OnClick(Point pt, int widget, int click_count)
  97         {
  98                 switch (widget) {
  99                         case WID_AT_AIRPORT:
 100                                 if (HandlePlacePushButton (this, WID_AT_AIRPORT, SPR_CURSOR_AIRPORT, POINTER_TILE)) {
 101                                         ShowBuildAirportPicker(this);
 102                                         this->last_user_action = widget;
 103                                 }
 104                                 break;
 105
 106                         case WID_AT_DEMOLISH:
 107                                 HandlePlacePushButton (this, WID_AT_DEMOLISH, ANIMCURSOR_DEMOLISH, POINTER_TILE);
 108                                 this->last_user_action = widget;
 109                                 break;
 110
 111                         default: break;
 112                 }
 113         }
 114
 115
 116         virtual void OnPlaceObject(Point pt, TileIndex tile)
 117         {
 118                 switch (this->last_user_action) {
 119                         case WID_AT_AIRPORT:
 120                                 PlaceAirport(tile);
 121                                 break;
 122
 123                         case WID_AT_DEMOLISH:
 124                                 VpStartPlaceSizing (tile, VPM_X_AND_Y_ROTATED);
 125                                 break;
 126
 127                         default: NOT_REACHED();
 128                 }
 129         }
 130
 131         void OnPlaceMouseUp (int userdata, Point pt, TileIndex start_tile, TileIndex end_tile) OVERRIDE
 132         {
 133                 if (pt.x != -1) {
 134                         HandleDemolishMouseUp (start_tile, end_tile);
 135                 }
 136         }
 137
 138         virtual void OnPlaceObjectAbort()
 139         {
 140                 this->RaiseButtons();
 141
 142                 DeleteWindowById(WC_BUILD_STATION, TRANSPORT_AIR);
 143                 DeleteWindowById(WC_SELECT_STATION, 0);
 144         }
 145
 146         static HotkeyList hotkeys;
 147 };
 148
 149 /**
 150  * Handler for global hotkeys of the BuildAirToolbarWindow.
 151  * @param hotkey Hotkey
 152  * @return ES_HANDLED if hotkey was accepted.
 153  */
 154 static EventState AirportToolbarGlobalHotkeys(int hotkey)
 155 {
 156         if (_game_mode != GM_NORMAL || !CanBuildVehicleInfrastructure(VEH_AIRCRAFT)) return ES_NOT_HANDLED;
 157         Window *w = ShowBuildAirToolbar();
 158         if (w == NULL) return ES_NOT_HANDLED;
 159         return w->OnHotkey(hotkey);
 160 }
 161
 162 static const Hotkey airtoolbar_hotkeys[] = {
 163         Hotkey ("airport",  WID_AT_AIRPORT,  '1'),
 164         Hotkey ("demolish", WID_AT_DEMOLISH, '2'),
 165 };
 166 HotkeyList BuildAirToolbarWindow::hotkeys("airtoolbar", airtoolbar_hotkeys, AirportToolbarGlobalHotkeys);
 167
 168 static const NWidgetPart _nested_air_toolbar_widgets[] = {
 169         NWidget(NWID_HORIZONTAL),
 170                 NWidget(WWT_CLOSEBOX, COLOUR_DARK_GREEN),
 171                 NWidget(WWT_CAPTION, COLOUR_DARK_GREEN), SetDataTip(STR_TOOLBAR_AIRCRAFT_CAPTION, STR_TOOLTIP_WINDOW_TITLE_DRAG_THIS),
 172                 NWidget(WWT_STICKYBOX, COLOUR_DARK_GREEN),
 173         EndContainer(),
 174         NWidget(NWID_HORIZONTAL),
 175                 NWidget(WWT_IMGBTN, COLOUR_DARK_GREEN, WID_AT_AIRPORT), SetFill(0, 1), SetMinimalSize(42, 22), SetDataTip(SPR_IMG_AIRPORT, STR_TOOLBAR_AIRCRAFT_BUILD_AIRPORT_TOOLTIP),
 176                 NWidget(WWT_PANEL, COLOUR_DARK_GREEN), SetMinimalSize(4, 22), SetFill(1, 1), EndContainer(),
 177                 NWidget(WWT_IMGBTN, COLOUR_DARK_GREEN, WID_AT_DEMOLISH), SetFill(0, 1), SetMinimalSize(22, 22), SetDataTip(SPR_IMG_DYNAMITE, STR_TOOLTIP_DEMOLISH_BUILDINGS_ETC),
 178         EndContainer(),
 179 };
 180
 181 static WindowDesc::Prefs _air_toolbar_prefs ("toolbar_air");
 182
 183 static const WindowDesc _air_toolbar_desc(
 184         WDP_ALIGN_TOOLBAR, 0, 0,
 185         WC_BUILD_TOOLBAR, WC_NONE,
 186         WDF_CONSTRUCTION,
 187         _nested_air_toolbar_widgets, lengthof(_nested_air_toolbar_widgets),
 188         &_air_toolbar_prefs, &BuildAirToolbarWindow::hotkeys
 189 );
 190
 191 /**
 192  * Open the build airport toolbar window
 193  *
 194  * If the terraform toolbar is linked to the toolbar, that window is also opened.
 195  *
 196  * @return newly opened airport toolbar, or NULL if the toolbar could not be opened.
 197  */
 198 Window *ShowBuildAirToolbar()
 199 {
 200         if (!Company::IsValidID(_local_company)) return NULL;
 201
 202         DeleteWindowByClass(WC_BUILD_TOOLBAR);
 203         return AllocateWindowDescFront<BuildAirToolbarWindow>(&_air_toolbar_desc, TRANSPORT_AIR);
 204 }
 205
 206 class BuildAirportWindow : public PickerWindowBase {
 207         SpriteID preview_sprite; ///< Cached airport preview sprite.
 208         int line_height;
 209         Scrollbar *vscroll;
 210
 211         /** Build a dropdown list of available airport classes */
 212         static DropDownList *BuildAirportClassDropDown()
 213         {
 214                 DropDownList *list = new DropDownList();
 215
 216                 for (uint i = 0; i < AirportClass::GetClassCount(); i++) {
 217                         *list->Append() = new DropDownListStringItem(AirportClass::Get((AirportClassID)i)->name, i, false);
 218                 }
 219
 220                 return list;
 221         }
 222
 223 public:
 224         BuildAirportWindow (const WindowDesc *desc, Window *parent)
 225                 : PickerWindowBase (desc, parent),
 226                   preview_sprite (0), line_height (0), vscroll (NULL)
 227         {
 228                 this->CreateNestedTree();
 229
 230                 this->vscroll = this->GetScrollbar(WID_AP_SCROLLBAR);
 231                 this->vscroll->SetCapacity(5);
 232                 this->vscroll->SetPosition(0);
 233
 234                 this->InitNested(TRANSPORT_AIR);
 235
 236                 this->SetWidgetLoweredState(WID_AP_BTN_DONTHILIGHT, !_settings_client.gui.station_show_coverage);
 237                 this->SetWidgetLoweredState(WID_AP_BTN_DOHILIGHT, _settings_client.gui.station_show_coverage);
 238                 this->OnInvalidateData();
 239
 240                 /* Ensure airport class is valid (changing NewGRFs). */
 241                 _selected_airport_class = Clamp(_selected_airport_class, APC_BEGIN, (AirportClassID)(AirportClass::GetClassCount() - 1));
 242                 const AirportClass *ac = AirportClass::Get(_selected_airport_class);
 243                 this->vscroll->SetCount(ac->GetSpecCount());
 244
 245                 /* Ensure the airport index is valid for this class (changing NewGRFs). */
 246                 _selected_airport_index = Clamp(_selected_airport_index, -1, ac->GetSpecCount() - 1);
 247
 248                 /* Only when no valid airport was selected, we want to select the first airport. */
 249                 bool selectFirstAirport = true;
 250                 if (_selected_airport_index != -1) {
 251                         const AirportSpec *as = ac->GetSpec(_selected_airport_index);
 252                         if (as->IsAvailable()) {
 253                                 /* Ensure the airport layout is valid. */
 254                                 _selected_airport_layout = Clamp(_selected_airport_layout, 0, as->num_table - 1);
 255                                 selectFirstAirport = false;
 256                                 this->UpdateSelectSize();
 257                         }
 258                 }
 259
 260                 if (selectFirstAirport) this->SelectFirstAvailableAirport(true);
 261         }
 262
 263         void OnDelete (void) FINAL_OVERRIDE
 264         {
 265                 DeleteWindowById(WC_SELECT_STATION, 0);
 266                 this->PickerWindowBase::OnDelete();
 267         }
 268
 269         virtual void SetStringParameters(int widget) const
 270         {
 271                 switch (widget) {
 272                         case WID_AP_CLASS_DROPDOWN:
 273                                 SetDParam(0, AirportClass::Get(_selected_airport_class)->name);
 274                                 break;
 275
 276                         case WID_AP_LAYOUT_NUM:
 277                                 SetDParam(0, STR_EMPTY);
 278                                 if (_selected_airport_index != -1) {
 279                                         const AirportSpec *as = AirportClass::Get(_selected_airport_class)->GetSpec(_selected_airport_index);
 280                                         StringID string = GetAirportTextCallback(as, _selected_airport_layout, CBID_AIRPORT_LAYOUT_NAME);
 281                                         if (string != STR_UNDEFINED) {
 282                                                 SetDParam(0, string);
 283                                         } else if (as->num_table > 1) {
 284                                                 SetDParam(0, STR_STATION_BUILD_AIRPORT_LAYOUT_NAME);
 285                                                 SetDParam(1, _selected_airport_layout + 1);
 286                                         }
 287                                 }
 288                                 break;
 289
 290                         default: break;
 291                 }
 292         }
 293
 294         virtual void UpdateWidgetSize(int widget, Dimension *size, const Dimension &padding, Dimension *fill, Dimension *resize)
 295         {
 296                 switch (widget) {
 297                         case WID_AP_CLASS_DROPDOWN: {
 298                                 Dimension d = {0, 0};
 299                                 for (uint i = 0; i < AirportClass::GetClassCount(); i++) {
 300                                         SetDParam(0, AirportClass::Get((AirportClassID)i)->name);
 301                                         d = maxdim(d, GetStringBoundingBox(STR_BLACK_STRING));
 302                                 }
 303                                 d.width += padding.width;
 304                                 d.height += padding.height;
 305                                 *size = maxdim(*size, d);
 306                                 break;
 307                         }
 308
 309                         case WID_AP_AIRPORT_LIST: {
 310                                 for (int i = 0; i < NUM_AIRPORTS; i++) {
 311                                         const AirportSpec *as = AirportSpec::Get(i);
 312                                         if (!as->enabled) continue;
 313
 314                                         size->width = max(size->width, GetStringBoundingBox(as->name).width);
 315                                 }
 316
 317                                 this->line_height = FONT_HEIGHT_NORMAL + WD_MATRIX_TOP + WD_MATRIX_BOTTOM;
 318                                 size->height = 5 * this->line_height;
 319                                 break;
 320                         }
 321
 322                         case WID_AP_AIRPORT_SPRITE:
 323                                 for (int i = 0; i < NUM_AIRPORTS; i++) {
 324                                         const AirportSpec *as = AirportSpec::Get(i);
 325                                         if (!as->enabled) continue;
 326                                         for (byte layout = 0; layout < as->num_table; layout++) {
 327                                                 SpriteID sprite = GetCustomAirportSprite(as, layout);
 328                                                 if (sprite != 0) {
 329                                                         Dimension d = GetSpriteSize(sprite);
 330                                                         d.width += WD_FRAMERECT_LEFT + WD_FRAMERECT_RIGHT;
 331                                                         d.height += WD_FRAMERECT_TOP + WD_FRAMERECT_BOTTOM;
 332                                                         *size = maxdim(d, *size);
 333                                                 }
 334                                         }
 335                                 }
 336                                 break;
 337
 338                         case WID_AP_EXTRA_TEXT:
 339                                 for (int i = NEW_AIRPORT_OFFSET; i < NUM_AIRPORTS; i++) {
 340                                         const AirportSpec *as = AirportSpec::Get(i);
 341                                         if (!as->enabled) continue;
 342                                         for (byte layout = 0; layout < as->num_table; layout++) {
 343                                                 StringID string = GetAirportTextCallback(as, layout, CBID_AIRPORT_ADDITIONAL_TEXT);
 344                                                 if (string == STR_UNDEFINED) continue;
 345
 346                                                 /* STR_BLACK_STRING is used to start the string with {BLACK} */
 347                                                 SetDParam(0, string);
 348                                                 uint h = GetStringHeight (STR_BLACK_STRING, size->width);
 349                                                 size->height = max (h, size->height);
 350                                         }
 351                                 }
 352                                 break;
 353
 354                         default: break;
 355                 }
 356         }
 357
 358         void DrawWidget (BlitArea *dpi, const Rect &r, int widget) const OVERRIDE
 359         {
 360                 switch (widget) {
 361                         case WID_AP_AIRPORT_LIST: {
 362                                 int y = r.top;
 363                                 AirportClass *apclass = AirportClass::Get(_selected_airport_class);
 364                                 for (uint i = this->vscroll->GetPosition(); this->vscroll->IsVisible(i) && i < apclass->GetSpecCount(); i++) {
 365                                         const AirportSpec *as = apclass->GetSpec(i);
 366                                         if (!as->IsAvailable()) {
 367                                                 GfxFillRect (dpi, r.left + 1, y + 1, r.right - 1, y + this->line_height - 2, PC_BLACK, FILLRECT_CHECKER);
 368                                         }
 369                                         DrawString (dpi, r.left + WD_MATRIX_LEFT, r.right - WD_MATRIX_RIGHT, y + WD_MATRIX_TOP, as->name, ((int)i == _selected_airport_index) ? TC_WHITE : TC_BLACK);
 370                                         y += this->line_height;
 371                                 }
 372                                 break;
 373                         }
 374
 375                         case WID_AP_AIRPORT_SPRITE:
 376                                 if (this->preview_sprite != 0) {
 377                                         Dimension d = GetSpriteSize(this->preview_sprite);
 378                                         DrawSprite (dpi, this->preview_sprite, COMPANY_SPRITE_COLOUR(_local_company), (r.left + r.right - d.width) / 2, (r.top + r.bottom - d.height) / 2);
 379                                 }
 380                                 break;
 381
 382                         case WID_AP_EXTRA_TEXT:
 383                                 if (_selected_airport_index != -1) {
 384                                         const AirportSpec *as = AirportClass::Get(_selected_airport_class)->GetSpec(_selected_airport_index);
 385                                         StringID string = GetAirportTextCallback(as, _selected_airport_layout, CBID_AIRPORT_ADDITIONAL_TEXT);
 386                                         if (string != STR_UNDEFINED) {
 387                                                 SetDParam(0, string);
 388                                                 DrawStringMultiLine (dpi, r.left, r.right, r.top, r.bottom, STR_BLACK_STRING);
 389                                         }
 390                                 }
 391                                 break;
 392                 }
 393         }
 394
 395         void OnPaint (BlitArea *dpi) OVERRIDE
 396         {
 397                 this->DrawWidgets (dpi);
 398
 399                 uint16 top = this->GetWidget<NWidgetBase>(WID_AP_BTN_DOHILIGHT)->pos_y + this->GetWidget<NWidgetBase>(WID_AP_BTN_DOHILIGHT)->current_y + WD_PAR_VSEP_NORMAL;
 400                 NWidgetBase *panel_nwi = this->GetWidget<NWidgetBase>(WID_AP_BOTTOMPANEL);
 401
 402                 int right = panel_nwi->pos_x +  panel_nwi->current_x;
 403                 int bottom = panel_nwi->pos_y +  panel_nwi->current_y;
 404
 405                 if (_selected_airport_index != -1) {
 406                         const AirportSpec *as = AirportClass::Get(_selected_airport_class)->GetSpec(_selected_airport_index);
 407                         int rad = _settings_game.station.modified_catchment ? as->catchment : (uint)CA_UNMODIFIED;
 408
 409                         /* only show the station (airport) noise, if the noise option is activated */
 410                         if (_settings_game.economy.station_noise_level) {
 411                                 /* show the noise of the selected airport */
 412                                 SetDParam(0, as->noise_level);
 413                                 DrawString (dpi, panel_nwi->pos_x + WD_FRAMERECT_LEFT, right - WD_FRAMERECT_RIGHT, top, STR_STATION_BUILD_NOISE);
 414                                 top += FONT_HEIGHT_NORMAL + WD_PAR_VSEP_NORMAL;
 415                         }
 416
 417                         /* strings such as 'Size' and 'Coverage Area' */
 418                         top = DrawStationCoverageAreaText (dpi, panel_nwi->pos_x + WD_FRAMERECT_LEFT, right - WD_FRAMERECT_RIGHT, top, rad);
 419                 }
 420
 421                 /* Resize background if the window is too small.
 422                  * Never make the window smaller to avoid oscillating if the size change affects the acceptance.
 423                  * (This is the case, if making the window bigger moves the mouse into the window.) */
 424                 if (top > bottom) {
 425                         ResizeWindow(this, 0, top - bottom, false);
 426                 }
 427         }
 428
 429         void SelectOtherAirport(int airport_index)
 430         {
 431                 _selected_airport_index = airport_index;
 432                 _selected_airport_layout = 0;
 433
 434                 this->UpdateSelectSize();
 435                 this->SetDirty();
 436         }
 437
 438         void UpdateSelectSize()
 439         {
 440                 if (_selected_airport_index == -1) {
 441                         SetTileSelectSize(1, 1);
 442                         this->DisableWidget(WID_AP_LAYOUT_DECREASE);
 443                         this->DisableWidget(WID_AP_LAYOUT_INCREASE);
 444                 } else {
 445                         const AirportSpec *as = AirportClass::Get(_selected_airport_class)->GetSpec(_selected_airport_index);
 446                         int w = as->size_x;
 447                         int h = as->size_y;
 448                         Direction rotation = as->rotation[_selected_airport_layout];
 449                         if (rotation == DIR_E || rotation == DIR_W) Swap(w, h);
 450                         SetTileSelectSize(w, h);
 451
 452                         this->preview_sprite = GetCustomAirportSprite(as, _selected_airport_layout);
 453
 454                         this->SetWidgetDisabledState(WID_AP_LAYOUT_DECREASE, _selected_airport_layout == 0);
 455                         this->SetWidgetDisabledState(WID_AP_LAYOUT_INCREASE, _selected_airport_layout + 1 >= as->num_table);
 456
 457                         int rad = _settings_game.station.modified_catchment ? as->catchment : (uint)CA_UNMODIFIED;
 458                         if (_settings_client.gui.station_show_coverage) SetTileSelectBigSize(-rad, -rad, 2 * rad, 2 * rad);
 459                 }
 460         }
 461
 462         virtual void OnClick(Point pt, int widget, int click_count)
 463         {
 464                 switch (widget) {
 465                         case WID_AP_CLASS_DROPDOWN:
 466                                 ShowDropDownList(this, BuildAirportClassDropDown(), _selected_airport_class, WID_AP_CLASS_DROPDOWN);
 467                                 break;
 468
 469                         case WID_AP_AIRPORT_LIST: {
 470                                 int num_clicked = this->vscroll->GetPosition() + (pt.y - this->nested_array[widget]->pos_y) / this->line_height;
 471                                 if (num_clicked >= this->vscroll->GetCount()) break;
 472                                 const AirportSpec *as = AirportClass::Get(_selected_airport_class)->GetSpec(num_clicked);
 473                                 if (as->IsAvailable()) this->SelectOtherAirport(num_clicked);
 474                                 break;
 475                         }
 476
 477                         case WID_AP_BTN_DONTHILIGHT: case WID_AP_BTN_DOHILIGHT:
 478                                 _settings_client.gui.station_show_coverage = (widget != WID_AP_BTN_DONTHILIGHT);
 479                                 this->SetWidgetLoweredState(WID_AP_BTN_DONTHILIGHT, !_settings_client.gui.station_show_coverage);
 480                                 this->SetWidgetLoweredState(WID_AP_BTN_DOHILIGHT, _settings_client.gui.station_show_coverage);
 481                                 this->SetDirty();
 482                                 if (_settings_client.sound.click_beep) SndPlayFx(SND_15_BEEP);
 483                                 this->UpdateSelectSize();
 484                                 break;
 485
 486                         case WID_AP_LAYOUT_DECREASE:
 487                                 _selected_airport_layout--;
 488                                 this->UpdateSelectSize();
 489                                 this->SetDirty();
 490                                 break;
 491
 492                         case WID_AP_LAYOUT_INCREASE:
 493                                 _selected_airport_layout++;
 494                                 this->UpdateSelectSize();
 495                                 this->SetDirty();
 496                                 break;
 497                 }
 498         }
 499
 500         /**
 501          * Select the first available airport.
 502          * @param change_class If true, change the class if no airport in the current
 503          *   class is available.
 504          */
 505         void SelectFirstAvailableAirport(bool change_class)
 506         {
 507                 /* First try to select an airport in the selected class. */
 508                 AirportClass *sel_apclass = AirportClass::Get(_selected_airport_class);
 509                 for (uint i = 0; i < sel_apclass->GetSpecCount(); i++) {
 510                         const AirportSpec *as = sel_apclass->GetSpec(i);
 511                         if (as->IsAvailable()) {
 512                                 this->SelectOtherAirport(i);
 513                                 return;
 514                         }
 515                 }
 516                 if (change_class) {
 517                         /* If that fails, select the first available airport
 518                          * from a random class. */
 519                         for (AirportClassID j = APC_BEGIN; j < APC_MAX; j++) {
 520                                 AirportClass *apclass = AirportClass::Get(j);
 521                                 for (uint i = 0; i < apclass->GetSpecCount(); i++) {
 522                                         const AirportSpec *as = apclass->GetSpec(i);
 523                                         if (as->IsAvailable()) {
 524                                                 _selected_airport_class = j;
 525                                                 this->SelectOtherAirport(i);
 526                                                 return;
 527                                         }
 528                                 }
 529                         }
 530                 }
 531                 /* If all airports are unavailable, select nothing. */
 532                 this->SelectOtherAirport(-1);
 533         }
 534
 535         virtual void OnDropdownSelect(int widget, int index)
 536         {
 537                 assert(widget == WID_AP_CLASS_DROPDOWN);
 538                 _selected_airport_class = (AirportClassID)index;
 539                 this->vscroll->SetCount(AirportClass::Get(_selected_airport_class)->GetSpecCount());
 540                 this->SelectFirstAvailableAirport(false);
 541         }
 542
 543         virtual void OnTick()
 544         {
 545                 CheckRedrawStationCoverage(this);
 546         }
 547 };
 548
 549 static const NWidgetPart _nested_build_airport_widgets[] = {
 550         NWidget(NWID_HORIZONTAL),
 551                 NWidget(WWT_CLOSEBOX, COLOUR_DARK_GREEN),
 552                 NWidget(WWT_CAPTION, COLOUR_DARK_GREEN), SetDataTip(STR_STATION_BUILD_AIRPORT_CAPTION, STR_TOOLTIP_WINDOW_TITLE_DRAG_THIS),
 553         EndContainer(),
 554         NWidget(WWT_PANEL, COLOUR_DARK_GREEN), SetFill(1, 0), SetPIP(2, 0, 2),
 555                 NWidget(WWT_LABEL, COLOUR_DARK_GREEN), SetDataTip(STR_STATION_BUILD_AIRPORT_CLASS_LABEL, STR_NULL), SetFill(1, 0),
 556                 NWidget(WWT_DROPDOWN, COLOUR_GREY, WID_AP_CLASS_DROPDOWN), SetFill(1, 0), SetDataTip(STR_BLACK_STRING, STR_STATION_BUILD_AIRPORT_TOOLTIP),
 557                 NWidget(WWT_EMPTY, COLOUR_DARK_GREEN, WID_AP_AIRPORT_SPRITE), SetFill(1, 0),
 558                 NWidget(NWID_HORIZONTAL),
 559                         NWidget(WWT_MATRIX, COLOUR_GREY, WID_AP_AIRPORT_LIST), SetFill(1, 0), SetMatrixDataTip(1, 5, STR_STATION_BUILD_AIRPORT_TOOLTIP), SetScrollbar(WID_AP_SCROLLBAR),
 560                         NWidget(NWID_VSCROLLBAR, COLOUR_GREY, WID_AP_SCROLLBAR),
 561                 EndContainer(),
 562                 NWidget(NWID_HORIZONTAL),
 563                         NWidget(WWT_PUSHARROWBTN, COLOUR_GREY, WID_AP_LAYOUT_DECREASE), SetMinimalSize(12, 0), SetDataTip(AWV_DECREASE, STR_NULL),
 564                         NWidget(WWT_LABEL, COLOUR_GREY, WID_AP_LAYOUT_NUM), SetResize(1, 0), SetFill(1, 0), SetDataTip(STR_BLACK_STRING, STR_NULL),
 565                         NWidget(WWT_PUSHARROWBTN, COLOUR_GREY, WID_AP_LAYOUT_INCREASE), SetMinimalSize(12, 0), SetDataTip(AWV_INCREASE, STR_NULL),
 566                 EndContainer(),
 567                 NWidget(WWT_EMPTY, COLOUR_DARK_GREEN, WID_AP_EXTRA_TEXT), SetFill(1, 0), SetMinimalSize(150, 0),
 568         EndContainer(),
 569         /* Bottom panel. */
 570         NWidget(WWT_PANEL, COLOUR_DARK_GREEN, WID_AP_BOTTOMPANEL), SetPIP(2, 2, 2),
 571                 NWidget(WWT_LABEL, COLOUR_DARK_GREEN), SetDataTip(STR_STATION_BUILD_COVERAGE_AREA_TITLE, STR_NULL), SetFill(1, 0),
 572                 NWidget(NWID_HORIZONTAL),
 573                         NWidget(NWID_SPACER), SetMinimalSize(14, 0), SetFill(1, 0),
 574                         NWidget(NWID_HORIZONTAL, NC_EQUALSIZE),
 575                                 NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_AP_BTN_DONTHILIGHT), SetMinimalSize(60, 12), SetFill(1, 0),
 576                                                                                         SetDataTip(STR_STATION_BUILD_COVERAGE_OFF, STR_STATION_BUILD_COVERAGE_AREA_OFF_TOOLTIP),
 577                                 NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_AP_BTN_DOHILIGHT), SetMinimalSize(60, 12), SetFill(1, 0),
 578                                                                                         SetDataTip(STR_STATION_BUILD_COVERAGE_ON, STR_STATION_BUILD_COVERAGE_AREA_ON_TOOLTIP),
 579                         EndContainer(),
 580                         NWidget(NWID_SPACER), SetMinimalSize(14, 0), SetFill(1, 0),
 581                 EndContainer(),
 582                 NWidget(NWID_SPACER), SetMinimalSize(0, 10), SetResize(0, 1), SetFill(1, 0),
 583         EndContainer(),
 584 };
 585
 586 static WindowDesc::Prefs _build_airport_prefs ("build_station_air");
 587
 588 static const WindowDesc _build_airport_desc(
 589         WDP_AUTO, 0, 0,
 590         WC_BUILD_STATION, WC_BUILD_TOOLBAR,
 591         WDF_CONSTRUCTION,
 592         _nested_build_airport_widgets, lengthof(_nested_build_airport_widgets),
 593         &_build_airport_prefs
 594 );
 595
 596 static void ShowBuildAirportPicker(Window *parent)
 597 {
 598         new BuildAirportWindow(&_build_airport_desc, parent);
 599 }
 600
 601 void InitializeAirportGui()
 602 {
 603         _selected_airport_class = APC_BEGIN;
 604         _selected_airport_index = -1;
 605 }