# airport_gui.cpp

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    00001 /* $Id$ */
    00002
    00003 /*
    00004  * This file is part of OpenTTD.
    00005  * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
    00006  * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
    00007  * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
    00008  */
    00009
    00012 #include "stdafx.h"
    00013 #include "window_gui.h"
    00014 #include "station_gui.h"
    00015 #include "terraform_gui.h"
    00016 #include "sound_func.h"
    00017 #include "window_func.h"
    00018 #include "strings_func.h"
    00019 #include "viewport_func.h"
    00020 #include "company_func.h"
    00021 #include "tilehighlight_func.h"
    00022 #include "company_base.h"
    00023 #include "station_type.h"
    00024 #include "newgrf_airport.h"
    00025 #include "newgrf_callbacks.h"
    00026 #include "widgets/dropdown_type.h"
    00027 #include "core/geometry_func.hpp"
    00028 #include "hotkeys.h"
    00029 #include "vehicle_func.h"
    00030
    00031 #include "widgets/airport_widget.h"
    00032
    00033
    00034 static AirportClassID _selected_airport_class;
    00035 static int _selected_airport_index;
    00036 static byte _selected_airport_layout;
    00037
    00038 static void ShowBuildAirportPicker(Window *parent);
    00039
    00040 SpriteID GetCustomAirportSprite(const AirportSpec *as, byte layout);
    00041
    00042 void CcBuildAirport(const CommandCost &result, TileIndex tile, uint32 p1, uint32 p2)
    00043 {
    00044   if (result.Failed()) return;
    00045
    00046   if (_settings_client.sound.confirm) SndPlayTileFx(SND_1F_SPLAT, tile);
    00047   if (!_settings_client.gui.persistent_buildingtools) ResetObjectToPlace();
    00048 }
    00049
    00054 static void PlaceAirport(TileIndex tile)
    00055 {
    00056   if (_selected_airport_index == -1) return;
    00057   uint32 p2 = _ctrl_pressed;
    00058   SB(p2, 16, 16, INVALID_STATION); // no station to join
    00059
    00060   uint32 p1 = AirportClass::Get(_selected_airport_class)->GetSpec(_selected_airport_index)->GetIndex();
    00061   p1 |= _selected_airport_layout << 8;
    00062   CommandContainer cmdcont = { tile, p1, p2, CMD_BUILD_AIRPORT | CMD_MSG(STR_ERROR_CAN_T_BUILD_AIRPORT_HERE), CcBuildAirport, "" };
    00063   ShowSelectStationIfNeeded(cmdcont, TileArea(tile, _thd.size.x / TILE_SIZE, _thd.size.y / TILE_SIZE));
    00064 }
    00065
    00067 struct BuildAirToolbarWindow : Window {
    00068   int last_user_action; // Last started user action.
    00069
    00070   BuildAirToolbarWindow(const WindowDesc *desc, WindowNumber window_number) : Window()
    00071   {
    00072     this->InitNested(desc, window_number);
    00073     if (_settings_client.gui.link_terraform_toolbar) ShowTerraformToolbar(this);
    00074     this->last_user_action = WIDGET_LIST_END;
    00075   }
    00076
    00077   ~BuildAirToolbarWindow()
    00078   {
    00079     if (_settings_client.gui.link_terraform_toolbar) DeleteWindowById(WC_SCEN_LAND_GEN, 0, false);
    00080   }
    00081
    00082   virtual void OnClick(Point pt, int widget, int click_count)
    00083   {
    00084     switch (widget) {
    00085       case WID_AT_AIRPORT:
    00086         if (HandlePlacePushButton(this, WID_AT_AIRPORT, SPR_CURSOR_AIRPORT, HT_RECT)) {
    00087           ShowBuildAirportPicker(this);
    00088           this->last_user_action = widget;
    00089         }
    00090         break;
    00091
    00092       case WID_AT_DEMOLISH:
    00093         HandlePlacePushButton(this, WID_AT_DEMOLISH, ANIMCURSOR_DEMOLISH, HT_RECT | HT_DIAGONAL);
    00094         this->last_user_action = widget;
    00095         break;
    00096
    00097       default: break;
    00098     }
    00099   }
    00100
    00101
    00102   virtual EventState OnKeyPress(uint16 key, uint16 keycode)
    00103   {
    00104     int num = CheckHotkeyMatch(airtoolbar_hotkeys, keycode, this);
    00105     if (num == -1) return ES_NOT_HANDLED;
    00106     this->OnClick(Point(), num, 1);
    00107     return ES_HANDLED;
    00108   }
    00109
    00110   virtual void OnPlaceObject(Point pt, TileIndex tile)
    00111   {
    00112     switch (this->last_user_action) {
    00113       case WID_AT_AIRPORT:
    00114         PlaceAirport(tile);
    00115         break;
    00116
    00117       case WID_AT_DEMOLISH:
    00118         PlaceProc_DemolishArea(tile);
    00119         break;
    00120
    00121       default: NOT_REACHED();
    00122     }
    00123   }
    00124
    00125   virtual void OnPlaceDrag(ViewportPlaceMethod select_method, ViewportDragDropSelectionProcess select_proc, Point pt)
    00126   {
    00127     VpSelectTilesWithMethod(pt.x, pt.y, select_method);
    00128   }
    00129
    00130   virtual void OnPlaceMouseUp(ViewportPlaceMethod select_method, ViewportDragDropSelectionProcess select_proc, Point pt, TileIndex start_tile, TileIndex end_tile)
    00131   {
    00132     if (pt.x != -1 && select_proc == DDSP_DEMOLISH_AREA) {
    00133       GUIPlaceProcDragXY(select_proc, start_tile, end_tile);
    00134     }
    00135   }
    00136
    00137   virtual void OnPlaceObjectAbort()
    00138   {
    00139     this->RaiseButtons();
    00140
    00141     DeleteWindowById(WC_BUILD_STATION, TRANSPORT_AIR);
    00142     DeleteWindowById(WC_SELECT_STATION, 0);
    00143   }
    00144
    00145   static Hotkey<BuildAirToolbarWindow> airtoolbar_hotkeys[];
    00146 };
    00147
    00148 Hotkey<BuildAirToolbarWindow> BuildAirToolbarWindow::airtoolbar_hotkeys[] = {
    00149   Hotkey<BuildAirToolbarWindow>('1', "airport", WID_AT_AIRPORT),
    00150   Hotkey<BuildAirToolbarWindow>('2', "demolish", WID_AT_DEMOLISH),
    00151   HOTKEY_LIST_END(BuildAirToolbarWindow)
    00152 };
    00153 Hotkey<BuildAirToolbarWindow> *_airtoolbar_hotkeys = BuildAirToolbarWindow::airtoolbar_hotkeys;
    00154
    00155 static const NWidgetPart _nested_air_toolbar_widgets[] = {
    00156   NWidget(NWID_HORIZONTAL),
    00157     NWidget(WWT_CLOSEBOX, COLOUR_DARK_GREEN),
    00158     NWidget(WWT_CAPTION, COLOUR_DARK_GREEN), SetDataTip(STR_TOOLBAR_AIRCRAFT_CAPTION, STR_TOOLTIP_WINDOW_TITLE_DRAG_THIS),
    00159     NWidget(WWT_STICKYBOX, COLOUR_DARK_GREEN),
    00160   EndContainer(),
    00161   NWidget(NWID_HORIZONTAL),
    00162     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),
    00163     NWidget(WWT_PANEL, COLOUR_DARK_GREEN), SetMinimalSize(4, 22), SetFill(1, 1), EndContainer(),
    00164     NWidget(WWT_IMGBTN, COLOUR_DARK_GREEN, WID_AT_DEMOLISH), SetFill(0, 1), SetMinimalSize(22, 22), SetDataTip(SPR_IMG_DYNAMITE, STR_TOOLTIP_DEMOLISH_BUILDINGS_ETC),
    00165   EndContainer(),
    00166 };
    00167
    00168 static const WindowDesc _air_toolbar_desc(
    00169   WDP_ALIGN_TOOLBAR, 0, 0,
    00170   WC_BUILD_TOOLBAR, WC_NONE,
    00171   WDF_CONSTRUCTION,
    00172   _nested_air_toolbar_widgets, lengthof(_nested_air_toolbar_widgets)
    00173 );
    00174
    00182 Window *ShowBuildAirToolbar()
    00183 {
    00184   if (!Company::IsValidID(_local_company)) return NULL;
    00185
    00186   DeleteWindowByClass(WC_BUILD_TOOLBAR);
    00187   return AllocateWindowDescFront<BuildAirToolbarWindow>(&_air_toolbar_desc, TRANSPORT_AIR);
    00188 }
    00189
    00190 EventState AirportToolbarGlobalHotkeys(uint16 key, uint16 keycode)
    00191 {
    00192   if (!CanBuildVehicleInfrastructure(VEH_AIRCRAFT)) return ES_NOT_HANDLED;
    00193   int num = CheckHotkeyMatch<BuildAirToolbarWindow>(_airtoolbar_hotkeys, keycode, NULL, true);
    00194   if (num == -1) return ES_NOT_HANDLED;
    00195   Window *w = ShowBuildAirToolbar();
    00196   if (w == NULL) return ES_NOT_HANDLED;
    00197   return w->OnKeyPress(key, keycode);
    00198 }
    00199
    00200 class BuildAirportWindow : public PickerWindowBase {
    00201   SpriteID preview_sprite;
    00202   int line_height;
    00203   Scrollbar *vscroll;
    00204
    00206   static DropDownList *BuildAirportClassDropDown()
    00207   {
    00208     DropDownList *list = new DropDownList();
    00209
    00210     for (uint i = 0; i < AirportClass::GetClassCount(); i++) {
    00211       list->push_back(new DropDownListStringItem(AirportClass::Get((AirportClassID)i)->name, i, false));
    00212     }
    00213
    00214     return list;
    00215   }
    00216
    00217 public:
    00218   BuildAirportWindow(const WindowDesc *desc, Window *parent) : PickerWindowBase(parent)
    00219   {
    00220     this->CreateNestedTree(desc);
    00221
    00222     this->vscroll = this->GetScrollbar(WID_AP_SCROLLBAR);
    00223     this->vscroll->SetCapacity(5);
    00224     this->vscroll->SetPosition(0);
    00225
    00226     this->FinishInitNested(desc, TRANSPORT_AIR);
    00227
    00228     this->SetWidgetLoweredState(WID_AP_BTN_DONTHILIGHT, !_settings_client.gui.station_show_coverage);
    00229     this->SetWidgetLoweredState(WID_AP_BTN_DOHILIGHT, _settings_client.gui.station_show_coverage);
    00230     this->OnInvalidateData();
    00231
    00232     this->vscroll->SetCount(AirportClass::Get(_selected_airport_class)->GetSpecCount());
    00233     this->SelectFirstAvailableAirport(true);
    00234   }
    00235
    00236   virtual ~BuildAirportWindow()
    00237   {
    00238     DeleteWindowById(WC_SELECT_STATION, 0);
    00239   }
    00240
    00241   virtual void SetStringParameters(int widget) const
    00242   {
    00243     switch (widget) {
    00244       case WID_AP_CLASS_DROPDOWN:
    00245         SetDParam(0, AirportClass::Get(_selected_airport_class)->name);
    00246         break;
    00247
    00248       case WID_AP_LAYOUT_NUM:
    00249         SetDParam(0, STR_EMPTY);
    00250         if (_selected_airport_index != -1) {
    00251           const AirportSpec *as = AirportClass::Get(_selected_airport_class)->GetSpec(_selected_airport_index);
    00252           StringID string = GetAirportTextCallback(as, _selected_airport_layout, CBID_AIRPORT_LAYOUT_NAME);
    00253           if (string != STR_UNDEFINED) {
    00254             SetDParam(0, string);
    00255           } else if (as->num_table > 1) {
    00256             SetDParam(0, STR_STATION_BUILD_AIRPORT_LAYOUT_NAME);
    00257             SetDParam(1, _selected_airport_layout + 1);
    00258           }
    00259         }
    00260         break;
    00261
    00262       default: break;
    00263     }
    00264   }
    00265
    00266   virtual void UpdateWidgetSize(int widget, Dimension *size, const Dimension &padding, Dimension *fill, Dimension *resize)
    00267   {
    00268     switch (widget) {
    00269       case WID_AP_CLASS_DROPDOWN: {
    00270         Dimension d = {0, 0};
    00271         for (uint i = 0; i < AirportClass::GetClassCount(); i++) {
    00272           SetDParam(0, AirportClass::Get((AirportClassID)i)->name);
    00273           d = maxdim(d, GetStringBoundingBox(STR_BLACK_STRING));
    00274         }
    00275         d.width += padding.width;
    00276         d.height += padding.height;
    00277         *size = maxdim(*size, d);
    00278         break;
    00279       }
    00280
    00281       case WID_AP_AIRPORT_LIST: {
    00282         for (int i = 0; i < NUM_AIRPORTS; i++) {
    00283           const AirportSpec *as = AirportSpec::Get(i);
    00284           if (!as->enabled) continue;
    00285
    00286           size->width = max(size->width, GetStringBoundingBox(as->name).width);
    00287         }
    00288
    00289         this->line_height = FONT_HEIGHT_NORMAL + WD_MATRIX_TOP + WD_MATRIX_BOTTOM;
    00290         size->height = this->vscroll->GetCapacity() * this->line_height;
    00291         break;
    00292       }
    00293
    00294       case WID_AP_AIRPORT_SPRITE:
    00295         for (int i = 0; i < NUM_AIRPORTS; i++) {
    00296           const AirportSpec *as = AirportSpec::Get(i);
    00297           if (!as->enabled) continue;
    00298           for (byte layout = 0; layout < as->num_table; layout++) {
    00299             SpriteID sprite = GetCustomAirportSprite(as, layout);
    00300             if (sprite != 0) {
    00301               Dimension d = GetSpriteSize(sprite);
    00302               d.width += WD_FRAMERECT_LEFT + WD_FRAMERECT_RIGHT;
    00303               d.height += WD_FRAMERECT_TOP + WD_FRAMERECT_BOTTOM;
    00304               *size = maxdim(d, *size);
    00305             }
    00306           }
    00307         }
    00308         break;
    00309
    00310       case WID_AP_EXTRA_TEXT:
    00311         for (int i = NEW_AIRPORT_OFFSET; i < NUM_AIRPORTS; i++) {
    00312           const AirportSpec *as = AirportSpec::Get(i);
    00313           if (!as->enabled) continue;
    00314           for (byte layout = 0; layout < as->num_table; layout++) {
    00315             StringID string = GetAirportTextCallback(as, layout, CBID_AIRPORT_ADDITIONAL_TEXT);
    00316             if (string == STR_UNDEFINED) continue;
    00317
    00318             /* STR_BLACK_STRING is used to start the string with {BLACK} */
    00319             SetDParam(0, string);
    00320             Dimension d = GetStringMultiLineBoundingBox(STR_BLACK_STRING, *size);
    00321             *size = maxdim(d, *size);
    00322           }
    00323         }
    00324         break;
    00325
    00326       default: break;
    00327     }
    00328   }
    00329
    00330   virtual void DrawWidget(const Rect &r, int widget) const
    00331   {
    00332     switch (widget) {
    00333       case WID_AP_AIRPORT_LIST: {
    00334         int y = r.top;
    00335         AirportClass *apclass = AirportClass::Get(_selected_airport_class);
    00336         for (uint i = this->vscroll->GetPosition(); this->vscroll->IsVisible(i) && i < apclass->GetSpecCount(); i++) {
    00337           const AirportSpec *as = apclass->GetSpec(i);
    00338           if (!as->IsAvailable()) {
    00339             GfxFillRect(r.left + 1, y + 1, r.right - 1, y + this->line_height - 2, PC_BLACK, FILLRECT_CHECKER);
    00340           }
    00341           DrawString(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);
    00342           y += this->line_height;
    00343         }
    00344         break;
    00345       }
    00346
    00347       case WID_AP_AIRPORT_SPRITE:
    00348         if (this->preview_sprite != 0) {
    00349           Dimension d = GetSpriteSize(this->preview_sprite);
    00350           DrawSprite(this->preview_sprite, COMPANY_SPRITE_COLOUR(_local_company), (r.left + r.right - d.width) / 2, (r.top + r.bottom - d.height) / 2);
    00351         }
    00352         break;
    00353
    00354       case WID_AP_EXTRA_TEXT:
    00355         if (_selected_airport_index != -1) {
    00356           const AirportSpec *as = AirportClass::Get(_selected_airport_class)->GetSpec(_selected_airport_index);
    00357           StringID string = GetAirportTextCallback(as, _selected_airport_layout, CBID_AIRPORT_ADDITIONAL_TEXT);
    00358           if (string != STR_UNDEFINED) {
    00359             SetDParam(0, string);
    00360             DrawStringMultiLine(r.left, r.right, r.top, r.bottom, STR_BLACK_STRING);
    00361           }
    00362         }
    00363         break;
    00364     }
    00365   }
    00366
    00367   virtual void OnPaint()
    00368   {
    00369     this->DrawWidgets();
    00370
    00371     uint16 top = this->GetWidget<NWidgetBase>(WID_AP_BTN_DOHILIGHT)->pos_y + this->GetWidget<NWidgetBase>(WID_AP_BTN_DOHILIGHT)->current_y + WD_PAR_VSEP_NORMAL;
    00372     NWidgetBase *panel_nwi = this->GetWidget<NWidgetBase>(WID_AP_BOTTOMPANEL);
    00373
    00374     int right = panel_nwi->pos_x +  panel_nwi->current_x;
    00375     int bottom = panel_nwi->pos_y +  panel_nwi->current_y;
    00376
    00377     if (_selected_airport_index != -1) {
    00378       const AirportSpec *as = AirportClass::Get(_selected_airport_class)->GetSpec(_selected_airport_index);
    00379       int rad = _settings_game.station.modified_catchment ? as->catchment : (uint)CA_UNMODIFIED;
    00380
    00381       /* only show the station (airport) noise, if the noise option is activated */
    00382       if (_settings_game.economy.station_noise_level) {
    00383         /* show the noise of the selected airport */
    00384         SetDParam(0, as->noise_level);
    00385         DrawString(panel_nwi->pos_x + WD_FRAMERECT_LEFT, right - WD_FRAMERECT_RIGHT, top, STR_STATION_BUILD_NOISE);
    00386         top += FONT_HEIGHT_NORMAL + WD_PAR_VSEP_NORMAL;
    00387       }
    00388
    00389       /* strings such as 'Size' and 'Coverage Area' */
    00390       top = DrawStationCoverageAreaText(panel_nwi->pos_x + WD_FRAMERECT_LEFT, right - WD_FRAMERECT_RIGHT, top, SCT_ALL, rad, false) + WD_PAR_VSEP_NORMAL;
    00391       top = DrawStationCoverageAreaText(panel_nwi->pos_x + WD_FRAMERECT_LEFT, right - WD_FRAMERECT_RIGHT, top, SCT_ALL, rad, true) + WD_PAR_VSEP_NORMAL;
    00392     }
    00393
    00394     /* Resize background if the text is not equally long as the window. */
    00395     if (top > bottom || (top < bottom && panel_nwi->current_y > panel_nwi->smallest_y)) {
    00396       ResizeWindow(this, 0, top - bottom);
    00397     }
    00398   }
    00399
    00400   void SelectOtherAirport(int airport_index)
    00401   {
    00402     _selected_airport_index = airport_index;
    00403     _selected_airport_layout = 0;
    00404
    00405     this->UpdateSelectSize();
    00406     this->SetDirty();
    00407   }
    00408
    00409   void UpdateSelectSize()
    00410   {
    00411     if (_selected_airport_index == -1) {
    00412       SetTileSelectSize(1, 1);
    00413       this->DisableWidget(WID_AP_LAYOUT_DECREASE);
    00414       this->DisableWidget(WID_AP_LAYOUT_INCREASE);
    00415     } else {
    00416       const AirportSpec *as = AirportClass::Get(_selected_airport_class)->GetSpec(_selected_airport_index);
    00417       int w = as->size_x;
    00418       int h = as->size_y;
    00419       Direction rotation = as->rotation[_selected_airport_layout];
    00420       if (rotation == DIR_E || rotation == DIR_W) Swap(w, h);
    00421       SetTileSelectSize(w, h);
    00422
    00423       this->preview_sprite = GetCustomAirportSprite(as, _selected_airport_layout);
    00424
    00425       this->SetWidgetDisabledState(WID_AP_LAYOUT_DECREASE, _selected_airport_layout == 0);
    00426       this->SetWidgetDisabledState(WID_AP_LAYOUT_INCREASE, _selected_airport_layout + 1 >= as->num_table);
    00427
    00428       int rad = _settings_game.station.modified_catchment ? as->catchment : (uint)CA_UNMODIFIED;
    00429       if (_settings_client.gui.station_show_coverage) SetTileSelectBigSize(-rad, -rad, 2 * rad, 2 * rad);
    00430     }
    00431   }
    00432
    00433   virtual void OnClick(Point pt, int widget, int click_count)
    00434   {
    00435     switch (widget) {
    00436       case WID_AP_CLASS_DROPDOWN:
    00437         ShowDropDownList(this, BuildAirportClassDropDown(), _selected_airport_class, WID_AP_CLASS_DROPDOWN);
    00438         break;
    00439
    00440       case WID_AP_AIRPORT_LIST: {
    00441         int num_clicked = this->vscroll->GetPosition() + (pt.y - this->nested_array[widget]->pos_y) / this->line_height;
    00442         if (num_clicked >= this->vscroll->GetCount()) break;
    00443         const AirportSpec *as = AirportClass::Get(_selected_airport_class)->GetSpec(num_clicked);
    00444         if (as->IsAvailable()) this->SelectOtherAirport(num_clicked);
    00445         break;
    00446       }
    00447
    00448       case WID_AP_BTN_DONTHILIGHT: case WID_AP_BTN_DOHILIGHT:
    00449         _settings_client.gui.station_show_coverage = (widget != WID_AP_BTN_DONTHILIGHT);
    00450         this->SetWidgetLoweredState(WID_AP_BTN_DONTHILIGHT, !_settings_client.gui.station_show_coverage);
    00451         this->SetWidgetLoweredState(WID_AP_BTN_DOHILIGHT, _settings_client.gui.station_show_coverage);
    00452         this->SetDirty();
    00453         if (_settings_client.sound.click_beep) SndPlayFx(SND_15_BEEP);
    00454         this->UpdateSelectSize();
    00455         break;
    00456
    00457       case WID_AP_LAYOUT_DECREASE:
    00458         _selected_airport_layout--;
    00459         this->UpdateSelectSize();
    00460         this->SetDirty();
    00461         break;
    00462
    00463       case WID_AP_LAYOUT_INCREASE:
    00464         _selected_airport_layout++;
    00465         this->UpdateSelectSize();
    00466         this->SetDirty();
    00467         break;
    00468     }
    00469   }
    00470
    00476   void SelectFirstAvailableAirport(bool change_class)
    00477   {
    00478     /* First try to select an airport in the selected class. */
    00479     AirportClass *sel_apclass = AirportClass::Get(_selected_airport_class);
    00480     for (uint i = 0; i < sel_apclass->GetSpecCount(); i++) {
    00481       const AirportSpec *as = sel_apclass->GetSpec(i);
    00482       if (as->IsAvailable()) {
    00483         this->SelectOtherAirport(i);
    00484         return;
    00485       }
    00486     }
    00487     if (change_class) {
    00488       /* If that fails, select the first available airport
    00489        * from a random class. */
    00490       for (AirportClassID j = APC_BEGIN; j < APC_MAX; j++) {
    00491         AirportClass *apclass = AirportClass::Get(j);
    00492         for (uint i = 0; i < apclass->GetSpecCount(); i++) {
    00493           const AirportSpec *as = apclass->GetSpec(i);
    00494           if (as->IsAvailable()) {
    00495             _selected_airport_class = j;
    00496             this->SelectOtherAirport(i);
    00497             return;
    00498           }
    00499         }
    00500       }
    00501     }
    00502     /* If all airports are unavailable, select nothing. */
    00503     this->SelectOtherAirport(-1);
    00504   }
    00505
    00506   virtual void OnDropdownSelect(int widget, int index)
    00507   {
    00508     assert(widget == WID_AP_CLASS_DROPDOWN);
    00509     _selected_airport_class = (AirportClassID)index;
    00510     this->vscroll->SetCount(AirportClass::Get(_selected_airport_class)->GetSpecCount());
    00511     this->SelectFirstAvailableAirport(false);
    00512   }
    00513
    00514   virtual void OnTick()
    00515   {
    00516     CheckRedrawStationCoverage(this);
    00517   }
    00518 };
    00519
    00520 static const NWidgetPart _nested_build_airport_widgets[] = {
    00521   NWidget(NWID_HORIZONTAL),
    00522     NWidget(WWT_CLOSEBOX, COLOUR_DARK_GREEN),
    00523     NWidget(WWT_CAPTION, COLOUR_DARK_GREEN), SetDataTip(STR_STATION_BUILD_AIRPORT_CAPTION, STR_TOOLTIP_WINDOW_TITLE_DRAG_THIS),
    00524   EndContainer(),
    00525   NWidget(WWT_PANEL, COLOUR_DARK_GREEN), SetFill(1, 0), SetPIP(2, 0, 2),
    00526     NWidget(WWT_LABEL, COLOUR_DARK_GREEN), SetDataTip(STR_STATION_BUILD_AIRPORT_CLASS_LABEL, STR_NULL), SetFill(1, 0),
    00527     NWidget(WWT_DROPDOWN, COLOUR_GREY, WID_AP_CLASS_DROPDOWN), SetFill(1, 0), SetDataTip(STR_BLACK_STRING, STR_STATION_BUILD_AIRPORT_TOOLTIP),
    00528     NWidget(NWID_HORIZONTAL),
    00529       NWidget(WWT_MATRIX, COLOUR_GREY, WID_AP_AIRPORT_LIST), SetFill(1, 0), SetDataTip(0x501, STR_STATION_BUILD_AIRPORT_TOOLTIP), SetScrollbar(WID_AP_SCROLLBAR),
    00530       NWidget(NWID_VSCROLLBAR, COLOUR_GREY, WID_AP_SCROLLBAR),
    00531     EndContainer(),
    00532     NWidget(NWID_HORIZONTAL),
    00533       NWidget(WWT_PUSHARROWBTN, COLOUR_GREY, WID_AP_LAYOUT_DECREASE), SetMinimalSize(12, 0), SetDataTip(AWV_DECREASE, STR_NULL),
    00534       NWidget(WWT_LABEL, COLOUR_GREY, WID_AP_LAYOUT_NUM), SetResize(1, 0), SetFill(1, 0), SetDataTip(STR_BLACK_STRING, STR_NULL),
    00535       NWidget(WWT_PUSHARROWBTN, COLOUR_GREY, WID_AP_LAYOUT_INCREASE), SetMinimalSize(12, 0), SetDataTip(AWV_INCREASE, STR_NULL),
    00536     EndContainer(),
    00537     NWidget(WWT_EMPTY, COLOUR_DARK_GREEN, WID_AP_AIRPORT_SPRITE), SetFill(1, 0),
    00538     NWidget(WWT_EMPTY, COLOUR_DARK_GREEN, WID_AP_EXTRA_TEXT), SetFill(1, 0), SetMinimalSize(150, 0),
    00539   EndContainer(),
    00540   /* Bottom panel. */
    00541   NWidget(WWT_PANEL, COLOUR_DARK_GREEN, WID_AP_BOTTOMPANEL), SetPIP(2, 2, 2),
    00542     NWidget(WWT_LABEL, COLOUR_DARK_GREEN), SetDataTip(STR_STATION_BUILD_COVERAGE_AREA_TITLE, STR_NULL), SetFill(1, 0),
    00543     NWidget(NWID_HORIZONTAL),
    00544       NWidget(NWID_SPACER), SetMinimalSize(14, 0), SetFill(1, 0),
    00545       NWidget(NWID_HORIZONTAL, NC_EQUALSIZE),
    00546         NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_AP_BTN_DONTHILIGHT), SetMinimalSize(60, 12), SetFill(1, 0),
    00547                       SetDataTip(STR_STATION_BUILD_COVERAGE_OFF, STR_STATION_BUILD_COVERAGE_AREA_OFF_TOOLTIP),
    00548         NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_AP_BTN_DOHILIGHT), SetMinimalSize(60, 12), SetFill(1, 0),
    00549                       SetDataTip(STR_STATION_BUILD_COVERAGE_ON, STR_STATION_BUILD_COVERAGE_AREA_ON_TOOLTIP),
    00550       EndContainer(),
    00551       NWidget(NWID_SPACER), SetMinimalSize(14, 0), SetFill(1, 0),
    00552     EndContainer(),
    00553     NWidget(NWID_SPACER), SetMinimalSize(0, 10), SetResize(0, 1), SetFill(1, 0),
    00554   EndContainer(),
    00555 };
    00556
    00557 static const WindowDesc _build_airport_desc(
    00558   WDP_AUTO, 0, 0,
    00559   WC_BUILD_STATION, WC_BUILD_TOOLBAR,
    00560   WDF_CONSTRUCTION,
    00561   _nested_build_airport_widgets, lengthof(_nested_build_airport_widgets)
    00562 );
    00563
    00564 static void ShowBuildAirportPicker(Window *parent)
    00565 {
    00566   new BuildAirportWindow(&_build_airport_desc, parent);
    00567 }
    00568
    00569 void InitializeAirportGui()
    00570 {
    00571   _selected_airport_class = APC_BEGIN;
    00572   _selected_airport_index = -1;
    00573 }