# airport_gui.cpp

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    00001 /* $Id: airport_gui.cpp 22837 2011-08-25 13:21:25Z rubidium $ */
    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 #include "sprite.h"
    00031
    00032 #include "table/strings.h"
    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   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, _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 enum AirportToolbarWidgets {
    00068   ATW_AIRPORT,
    00069   ATW_DEMOLISH,
    00070 };
    00071
    00072
    00074 struct BuildAirToolbarWindow : Window {
    00075   int last_user_action; // Last started user action.
    00076
    00077   BuildAirToolbarWindow(const WindowDesc *desc, WindowNumber window_number) : Window()
    00078   {
    00079     this->InitNested(desc, window_number);
    00080     if (_settings_client.gui.link_terraform_toolbar) ShowTerraformToolbar(this);
    00081     this->last_user_action = WIDGET_LIST_END;
    00082   }
    00083
    00084   ~BuildAirToolbarWindow()
    00085   {
    00086     if (_settings_client.gui.link_terraform_toolbar) DeleteWindowById(WC_SCEN_LAND_GEN, 0, false);
    00087   }
    00088
    00089   virtual void OnClick(Point pt, int widget, int click_count)
    00090   {
    00091     switch (widget) {
    00092       case ATW_AIRPORT:
    00093         if (HandlePlacePushButton(this, ATW_AIRPORT, SPR_CURSOR_AIRPORT, HT_RECT)) {
    00094           ShowBuildAirportPicker(this);
    00095           this->last_user_action = widget;
    00096         }
    00097         break;
    00098
    00099       case ATW_DEMOLISH:
    00100         HandlePlacePushButton(this, ATW_DEMOLISH, ANIMCURSOR_DEMOLISH, HT_RECT | HT_DIAGONAL);
    00101         this->last_user_action = widget;
    00102         break;
    00103
    00104       default: break;
    00105     }
    00106   }
    00107
    00108
    00109   virtual EventState OnKeyPress(uint16 key, uint16 keycode)
    00110   {
    00111     int num = CheckHotkeyMatch(airtoolbar_hotkeys, keycode, this);
    00112     if (num == -1) return ES_NOT_HANDLED;
    00113     this->OnClick(Point(), num, 1);
    00114     return ES_HANDLED;
    00115   }
    00116
    00117   virtual void OnPlaceObject(Point pt, TileIndex tile)
    00118   {
    00119     switch (this->last_user_action) {
    00120       case ATW_AIRPORT:
    00121         PlaceAirport(tile);
    00122         break;
    00123
    00124       case ATW_DEMOLISH:
    00125         PlaceProc_DemolishArea(tile);
    00126         break;
    00127
    00128       default: NOT_REACHED();
    00129     }
    00130   }
    00131
    00132   virtual void OnPlaceDrag(ViewportPlaceMethod select_method, ViewportDragDropSelectionProcess select_proc, Point pt)
    00133   {
    00134     VpSelectTilesWithMethod(pt.x, pt.y, select_method);
    00135   }
    00136
    00137   virtual void OnPlaceMouseUp(ViewportPlaceMethod select_method, ViewportDragDropSelectionProcess select_proc, Point pt, TileIndex start_tile, TileIndex end_tile)
    00138   {
    00139     if (pt.x != -1 && select_proc == DDSP_DEMOLISH_AREA) {
    00140       GUIPlaceProcDragXY(select_proc, start_tile, end_tile);
    00141     }
    00142   }
    00143
    00144   virtual void OnPlaceObjectAbort()
    00145   {
    00146     this->RaiseButtons();
    00147
    00148     DeleteWindowById(WC_BUILD_STATION, TRANSPORT_AIR);
    00149     DeleteWindowById(WC_SELECT_STATION, 0);
    00150   }
    00151
    00152   static Hotkey<BuildAirToolbarWindow> airtoolbar_hotkeys[];
    00153 };
    00154
    00155 Hotkey<BuildAirToolbarWindow> BuildAirToolbarWindow::airtoolbar_hotkeys[] = {
    00156   Hotkey<BuildAirToolbarWindow>('1', "airport", ATW_AIRPORT),
    00157   Hotkey<BuildAirToolbarWindow>('2', "demolish", ATW_DEMOLISH),
    00158   HOTKEY_LIST_END(BuildAirToolbarWindow)
    00159 };
    00160 Hotkey<BuildAirToolbarWindow> *_airtoolbar_hotkeys = BuildAirToolbarWindow::airtoolbar_hotkeys;
    00161
    00162 static const NWidgetPart _nested_air_toolbar_widgets[] = {
    00163   NWidget(NWID_HORIZONTAL),
    00164     NWidget(WWT_CLOSEBOX, COLOUR_DARK_GREEN),
    00165     NWidget(WWT_CAPTION, COLOUR_DARK_GREEN), SetDataTip(STR_TOOLBAR_AIRCRAFT_CAPTION, STR_TOOLTIP_WINDOW_TITLE_DRAG_THIS),
    00166     NWidget(WWT_STICKYBOX, COLOUR_DARK_GREEN),
    00167   EndContainer(),
    00168   NWidget(NWID_HORIZONTAL),
    00169     NWidget(WWT_IMGBTN, COLOUR_DARK_GREEN, ATW_AIRPORT), SetFill(0, 1), SetMinimalSize(42, 22), SetDataTip(SPR_IMG_AIRPORT, STR_TOOLBAR_AIRCRAFT_BUILD_AIRPORT_TOOLTIP),
    00170     NWidget(WWT_PANEL, COLOUR_DARK_GREEN), SetMinimalSize(4, 22), SetFill(1, 1), EndContainer(),
    00171     NWidget(WWT_IMGBTN, COLOUR_DARK_GREEN, ATW_DEMOLISH), SetFill(0, 1), SetMinimalSize(22, 22), SetDataTip(SPR_IMG_DYNAMITE, STR_TOOLTIP_DEMOLISH_BUILDINGS_ETC),
    00172   EndContainer(),
    00173 };
    00174
    00175 static const WindowDesc _air_toolbar_desc(
    00176   WDP_ALIGN_TOOLBAR, 0, 0,
    00177   WC_BUILD_TOOLBAR, WC_NONE,
    00178   WDF_CONSTRUCTION,
    00179   _nested_air_toolbar_widgets, lengthof(_nested_air_toolbar_widgets)
    00180 );
    00181
    00189 Window *ShowBuildAirToolbar()
    00190 {
    00191   if (!Company::IsValidID(_local_company)) return NULL;
    00192
    00193   DeleteWindowByClass(WC_BUILD_TOOLBAR);
    00194   return AllocateWindowDescFront<BuildAirToolbarWindow>(&_air_toolbar_desc, TRANSPORT_AIR);
    00195 }
    00196
    00197 EventState AirportToolbarGlobalHotkeys(uint16 key, uint16 keycode)
    00198 {
    00199   if (!CanBuildVehicleInfrastructure(VEH_AIRCRAFT)) return ES_NOT_HANDLED;
    00200   int num = CheckHotkeyMatch<BuildAirToolbarWindow>(_airtoolbar_hotkeys, keycode, NULL, true);
    00201   if (num == -1) return ES_NOT_HANDLED;
    00202   Window *w = ShowBuildAirToolbar();
    00203   if (w == NULL) return ES_NOT_HANDLED;
    00204   return w->OnKeyPress(key, keycode);
    00205 }
    00206
    00208 enum AirportPickerWidgets {
    00209   BAIRW_CLASS_DROPDOWN,
    00210   BAIRW_AIRPORT_LIST,
    00211   BAIRW_SCROLLBAR,
    00212   BAIRW_LAYOUT_NUM,
    00213   BAIRW_LAYOUT_DECREASE,
    00214   BAIRW_LAYOUT_INCREASE,
    00215   BAIRW_AIRPORT_SPRITE,
    00216   BAIRW_EXTRA_TEXT,
    00217   BAIRW_BOTTOMPANEL,
    00218   BAIRW_COVERAGE_LABEL,
    00219   BAIRW_BTN_DONTHILIGHT,
    00220   BAIRW_BTN_DOHILIGHT,
    00221 };
    00222
    00223 class BuildAirportWindow : public PickerWindowBase {
    00224   SpriteID preview_sprite;
    00225   int line_height;
    00226   Scrollbar *vscroll;
    00227
    00229   static DropDownList *BuildAirportClassDropDown()
    00230   {
    00231     DropDownList *list = new DropDownList();
    00232
    00233     for (uint i = 0; i < AirportClass::GetCount(); i++) {
    00234       list->push_back(new DropDownListStringItem(AirportClass::GetName((AirportClassID)i), i, false));
    00235     }
    00236
    00237     return list;
    00238   }
    00239
    00240 public:
    00241   BuildAirportWindow(const WindowDesc *desc, Window *parent) : PickerWindowBase(parent)
    00242   {
    00243     this->CreateNestedTree(desc);
    00244
    00245     this->vscroll = this->GetScrollbar(BAIRW_SCROLLBAR);
    00246     this->vscroll->SetCapacity(5);
    00247     this->vscroll->SetPosition(0);
    00248
    00249     this->FinishInitNested(desc, TRANSPORT_AIR);
    00250
    00251     this->SetWidgetLoweredState(BAIRW_BTN_DONTHILIGHT, !_settings_client.gui.station_show_coverage);
    00252     this->SetWidgetLoweredState(BAIRW_BTN_DOHILIGHT, _settings_client.gui.station_show_coverage);
    00253     this->OnInvalidateData();
    00254
    00255     this->vscroll->SetCount(AirportClass::GetCount(_selected_airport_class));
    00256     this->SelectFirstAvailableAirport(true);
    00257   }
    00258
    00259   virtual ~BuildAirportWindow()
    00260   {
    00261     DeleteWindowById(WC_SELECT_STATION, 0);
    00262   }
    00263
    00264   virtual void SetStringParameters(int widget) const
    00265   {
    00266     switch (widget) {
    00267       case BAIRW_CLASS_DROPDOWN:
    00268         SetDParam(0, AirportClass::GetName(_selected_airport_class));
    00269         break;
    00270
    00271       case BAIRW_LAYOUT_NUM:
    00272         SetDParam(0, STR_EMPTY);
    00273         if (_selected_airport_index != -1) {
    00274           const AirportSpec *as = AirportClass::Get(_selected_airport_class, _selected_airport_index);
    00275           StringID string = GetAirportTextCallback(as, _selected_airport_layout, CBID_AIRPORT_LAYOUT_NAME);
    00276           if (string != STR_UNDEFINED) {
    00277             SetDParam(0, string);
    00278           } else if (as->num_table > 1) {
    00279             SetDParam(0, STR_STATION_BUILD_AIRPORT_LAYOUT_NAME);
    00280             SetDParam(1, _selected_airport_layout + 1);
    00281           }
    00282         }
    00283         break;
    00284
    00285       default: break;
    00286     }
    00287   }
    00288
    00289   virtual void UpdateWidgetSize(int widget, Dimension *size, const Dimension &padding, Dimension *fill, Dimension *resize)
    00290   {
    00291     switch (widget) {
    00292       case BAIRW_CLASS_DROPDOWN: {
    00293         Dimension d = {0, 0};
    00294         for (uint i = 0; i < AirportClass::GetCount(); i++) {
    00295           SetDParam(0, AirportClass::GetName((AirportClassID)i));
    00296           d = maxdim(d, GetStringBoundingBox(STR_BLACK_STRING));
    00297         }
    00298         d.width += padding.width;
    00299         d.height += padding.height;
    00300         *size = maxdim(*size, d);
    00301         break;
    00302       }
    00303
    00304       case BAIRW_AIRPORT_LIST: {
    00305         for (int i = 0; i < NUM_AIRPORTS; i++) {
    00306           const AirportSpec *as = AirportSpec::Get(i);
    00307           if (!as->enabled) continue;
    00308
    00309           size->width = max(size->width, GetStringBoundingBox(as->name).width);
    00310         }
    00311
    00312         this->line_height = FONT_HEIGHT_NORMAL + WD_MATRIX_TOP + WD_MATRIX_BOTTOM;
    00313         size->height = this->vscroll->GetCapacity() * this->line_height;
    00314         break;
    00315       }
    00316
    00317       case BAIRW_AIRPORT_SPRITE:
    00318         for (int i = 0; i < NUM_AIRPORTS; i++) {
    00319           const AirportSpec *as = AirportSpec::Get(i);
    00320           if (!as->enabled) continue;
    00321           for (byte layout = 0; layout < as->num_table; layout++) {
    00322             SpriteID sprite = GetCustomAirportSprite(as, layout);
    00323             if (sprite != 0) {
    00324               Dimension d = GetSpriteSize(sprite);
    00325               d.width += WD_FRAMERECT_LEFT + WD_FRAMERECT_RIGHT;
    00326               d.height += WD_FRAMERECT_TOP + WD_FRAMERECT_BOTTOM;
    00327               *size = maxdim(d, *size);
    00328             }
    00329           }
    00330         }
    00331         break;
    00332
    00333       case BAIRW_EXTRA_TEXT:
    00334         for (int i = NEW_AIRPORT_OFFSET; i < NUM_AIRPORTS; i++) {
    00335           const AirportSpec *as = AirportSpec::Get(i);
    00336           if (!as->enabled) continue;
    00337           for (byte layout = 0; layout < as->num_table; layout++) {
    00338             StringID string = GetAirportTextCallback(as, layout, CBID_AIRPORT_ADDITIONAL_TEXT);
    00339             if (string == STR_UNDEFINED) continue;
    00340
    00341             /* STR_BLACK_STRING is used to start the string with {BLACK} */
    00342             SetDParam(0, string);
    00343             Dimension d = GetStringMultiLineBoundingBox(STR_BLACK_STRING, *size);
    00344             *size = maxdim(d, *size);
    00345           }
    00346         }
    00347         break;
    00348
    00349       default: break;
    00350     }
    00351   }
    00352
    00353   virtual void DrawWidget(const Rect &r, int widget) const
    00354   {
    00355     switch (widget) {
    00356       case BAIRW_AIRPORT_LIST: {
    00357         int y = r.top;
    00358         for (uint i = this->vscroll->GetPosition(); this->vscroll->IsVisible(i) && i < AirportClass::GetCount(_selected_airport_class); i++) {
    00359           const AirportSpec *as = AirportClass::Get(_selected_airport_class, i);
    00360           if (!as->IsAvailable()) {
    00361             GfxFillRect(r.left + 1, y + 1, r.right - 1, y + this->line_height - 2, 0, FILLRECT_CHECKER);
    00362           }
    00363           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);
    00364           y += this->line_height;
    00365         }
    00366         break;
    00367       }
    00368
    00369       case BAIRW_AIRPORT_SPRITE:
    00370         if (this->preview_sprite != 0) {
    00371           Dimension d = GetSpriteSize(this->preview_sprite);
    00372           DrawSprite(this->preview_sprite, COMPANY_SPRITE_COLOUR(_local_company), (r.left + r.right - d.width) / 2, (r.top + r.bottom - d.height) / 2);
    00373         }
    00374         break;
    00375
    00376       case BAIRW_EXTRA_TEXT:
    00377         if (_selected_airport_index != -1) {
    00378           const AirportSpec *as = AirportClass::Get(_selected_airport_class, _selected_airport_index);
    00379           StringID string = GetAirportTextCallback(as, _selected_airport_layout, CBID_AIRPORT_ADDITIONAL_TEXT);
    00380           if (string != STR_UNDEFINED) {
    00381             SetDParam(0, string);
    00382             DrawStringMultiLine(r.left, r.right, r.top, r.bottom, STR_BLACK_STRING);
    00383           }
    00384         }
    00385         break;
    00386     }
    00387   }
    00388
    00389   virtual void OnPaint()
    00390   {
    00391     this->DrawWidgets();
    00392
    00393     uint16 top = this->GetWidget<NWidgetBase>(BAIRW_BTN_DOHILIGHT)->pos_y + this->GetWidget<NWidgetBase>(BAIRW_BTN_DOHILIGHT)->current_y + WD_PAR_VSEP_NORMAL;
    00394     NWidgetBase *panel_nwi = this->GetWidget<NWidgetBase>(BAIRW_BOTTOMPANEL);
    00395
    00396     int right = panel_nwi->pos_x +  panel_nwi->current_x;
    00397     int bottom = panel_nwi->pos_y +  panel_nwi->current_y;
    00398
    00399     if (_selected_airport_index != -1) {
    00400       const AirportSpec *as = AirportClass::Get(_selected_airport_class, _selected_airport_index);
    00401       int rad = _settings_game.station.modified_catchment ? as->catchment : (uint)CA_UNMODIFIED;
    00402
    00403       /* only show the station (airport) noise, if the noise option is activated */
    00404       if (_settings_game.economy.station_noise_level) {
    00405         /* show the noise of the selected airport */
    00406         SetDParam(0, as->noise_level);
    00407         DrawString(panel_nwi->pos_x + WD_FRAMERECT_LEFT, right - WD_FRAMERECT_RIGHT, top, STR_STATION_BUILD_NOISE);
    00408         top += FONT_HEIGHT_NORMAL + WD_PAR_VSEP_NORMAL;
    00409       }
    00410
    00411       /* strings such as 'Size' and 'Coverage Area' */
    00412       top = DrawStationCoverageAreaText(panel_nwi->pos_x + WD_FRAMERECT_LEFT, right - WD_FRAMERECT_RIGHT, top, SCT_ALL, rad, false) + WD_PAR_VSEP_NORMAL;
    00413       top = DrawStationCoverageAreaText(panel_nwi->pos_x + WD_FRAMERECT_LEFT, right - WD_FRAMERECT_RIGHT, top, SCT_ALL, rad, true) + WD_PAR_VSEP_NORMAL;
    00414     }
    00415
    00416     /* Resize background if the text is not equally long as the window. */
    00417     if (top > bottom || (top < bottom && panel_nwi->current_y > panel_nwi->smallest_y)) {
    00418       ResizeWindow(this, 0, top - bottom);
    00419     }
    00420   }
    00421
    00422   void SelectOtherAirport(int airport_index)
    00423   {
    00424     _selected_airport_index = airport_index;
    00425     _selected_airport_layout = 0;
    00426
    00427     this->UpdateSelectSize();
    00428     this->SetDirty();
    00429   }
    00430
    00431   void UpdateSelectSize()
    00432   {
    00433     if (_selected_airport_index == -1) {
    00434       SetTileSelectSize(1, 1);
    00435       this->DisableWidget(BAIRW_LAYOUT_DECREASE);
    00436       this->DisableWidget(BAIRW_LAYOUT_INCREASE);
    00437     } else {
    00438       const AirportSpec *as = AirportClass::Get(_selected_airport_class, _selected_airport_index);
    00439       int w = as->size_x;
    00440       int h = as->size_y;
    00441       Direction rotation = as->rotation[_selected_airport_layout];
    00442       if (rotation == DIR_E || rotation == DIR_W) Swap(w, h);
    00443       SetTileSelectSize(w, h);
    00444
    00445       this->preview_sprite = GetCustomAirportSprite(as, _selected_airport_layout);
    00446
    00447       this->SetWidgetDisabledState(BAIRW_LAYOUT_DECREASE, _selected_airport_layout == 0);
    00448       this->SetWidgetDisabledState(BAIRW_LAYOUT_INCREASE, _selected_airport_layout + 1 >= as->num_table);
    00449
    00450       int rad = _settings_game.station.modified_catchment ? as->catchment : (uint)CA_UNMODIFIED;
    00451       if (_settings_client.gui.station_show_coverage) SetTileSelectBigSize(-rad, -rad, 2 * rad, 2 * rad);
    00452     }
    00453   }
    00454
    00455   virtual void OnClick(Point pt, int widget, int click_count)
    00456   {
    00457     switch (widget) {
    00458       case BAIRW_CLASS_DROPDOWN:
    00459         ShowDropDownList(this, BuildAirportClassDropDown(), _selected_airport_class, BAIRW_CLASS_DROPDOWN);
    00460         break;
    00461
    00462       case BAIRW_AIRPORT_LIST: {
    00463         int num_clicked = this->vscroll->GetPosition() + (pt.y - this->nested_array[widget]->pos_y) / this->line_height;
    00464         if (num_clicked >= this->vscroll->GetCount()) break;
    00465         const AirportSpec *as = AirportClass::Get(_selected_airport_class, num_clicked);
    00466         if (as->IsAvailable()) this->SelectOtherAirport(num_clicked);
    00467         break;
    00468       }
    00469
    00470       case BAIRW_BTN_DONTHILIGHT: case BAIRW_BTN_DOHILIGHT:
    00471         _settings_client.gui.station_show_coverage = (widget != BAIRW_BTN_DONTHILIGHT);
    00472         this->SetWidgetLoweredState(BAIRW_BTN_DONTHILIGHT, !_settings_client.gui.station_show_coverage);
    00473         this->SetWidgetLoweredState(BAIRW_BTN_DOHILIGHT, _settings_client.gui.station_show_coverage);
    00474         this->SetDirty();
    00475         SndPlayFx(SND_15_BEEP);
    00476         this->UpdateSelectSize();
    00477         break;
    00478
    00479       case BAIRW_LAYOUT_DECREASE:
    00480         _selected_airport_layout--;
    00481         this->UpdateSelectSize();
    00482         this->SetDirty();
    00483         break;
    00484
    00485       case BAIRW_LAYOUT_INCREASE:
    00486         _selected_airport_layout++;
    00487         this->UpdateSelectSize();
    00488         this->SetDirty();
    00489         break;
    00490     }
    00491   }
    00492
    00498   void SelectFirstAvailableAirport(bool change_class)
    00499   {
    00500     /* First try to select an airport in the selected class. */
    00501     for (uint i = 0; i < AirportClass::GetCount(_selected_airport_class); i++) {
    00502       const AirportSpec *as = AirportClass::Get(_selected_airport_class, i);
    00503       if (as->IsAvailable()) {
    00504         this->SelectOtherAirport(i);
    00505         return;
    00506       }
    00507     }
    00508     if (change_class) {
    00509       /* If that fails, select the first available airport
    00510        * from a random class. */
    00511       for (AirportClassID j = APC_BEGIN; j < APC_MAX; j++) {
    00512         for (uint i = 0; i < AirportClass::GetCount(j); i++) {
    00513           const AirportSpec *as = AirportClass::Get(j, i);
    00514           if (as->IsAvailable()) {
    00515             _selected_airport_class = j;
    00516             this->SelectOtherAirport(i);
    00517             return;
    00518           }
    00519         }
    00520       }
    00521     }
    00522     /* If all airports are unavailable, select nothing. */
    00523     this->SelectOtherAirport(-1);
    00524   }
    00525
    00526   virtual void OnDropdownSelect(int widget, int index)
    00527   {
    00528     assert(widget == BAIRW_CLASS_DROPDOWN);
    00529     _selected_airport_class = (AirportClassID)index;
    00530     this->vscroll->SetCount(AirportClass::GetCount(_selected_airport_class));
    00531     this->SelectFirstAvailableAirport(false);
    00532   }
    00533
    00534   virtual void OnTick()
    00535   {
    00536     CheckRedrawStationCoverage(this);
    00537   }
    00538 };
    00539
    00540 static const NWidgetPart _nested_build_airport_widgets[] = {
    00541   NWidget(NWID_HORIZONTAL),
    00542     NWidget(WWT_CLOSEBOX, COLOUR_DARK_GREEN),
    00543     NWidget(WWT_CAPTION, COLOUR_DARK_GREEN), SetDataTip(STR_STATION_BUILD_AIRPORT_CAPTION, STR_TOOLTIP_WINDOW_TITLE_DRAG_THIS),
    00544   EndContainer(),
    00545   NWidget(WWT_PANEL, COLOUR_DARK_GREEN), SetFill(1, 0), SetPIP(2, 0, 2),
    00546     NWidget(WWT_LABEL, COLOUR_DARK_GREEN), SetDataTip(STR_STATION_BUILD_AIRPORT_CLASS_LABEL, STR_NULL), SetFill(1, 0),
    00547     NWidget(WWT_DROPDOWN, COLOUR_GREY, BAIRW_CLASS_DROPDOWN), SetFill(1, 0), SetDataTip(STR_BLACK_STRING, STR_NULL),
    00548     NWidget(NWID_HORIZONTAL),
    00549       NWidget(WWT_MATRIX, COLOUR_GREY, BAIRW_AIRPORT_LIST), SetFill(1, 0), SetDataTip(0x501, STR_NULL), SetScrollbar(BAIRW_SCROLLBAR),
    00550       NWidget(NWID_VSCROLLBAR, COLOUR_GREY, BAIRW_SCROLLBAR),
    00551     EndContainer(),
    00552     NWidget(NWID_HORIZONTAL),
    00553       NWidget(WWT_PUSHARROWBTN, COLOUR_GREY, BAIRW_LAYOUT_DECREASE), SetMinimalSize(12, 0), SetDataTip(AWV_DECREASE, STR_NULL),
    00554       NWidget(WWT_LABEL, COLOUR_GREY, BAIRW_LAYOUT_NUM), SetResize(1, 0), SetFill(1, 0), SetDataTip(STR_BLACK_STRING, STR_NULL),
    00555       NWidget(WWT_PUSHARROWBTN, COLOUR_GREY, BAIRW_LAYOUT_INCREASE), SetMinimalSize(12, 0), SetDataTip(AWV_INCREASE, STR_NULL),
    00556     EndContainer(),
    00557     NWidget(WWT_EMPTY, COLOUR_DARK_GREEN, BAIRW_AIRPORT_SPRITE), SetFill(1, 0),
    00558     NWidget(WWT_EMPTY, COLOUR_DARK_GREEN, BAIRW_EXTRA_TEXT), SetFill(1, 0), SetMinimalSize(150, 0),
    00559   EndContainer(),
    00560   /* Bottom panel. */
    00561   NWidget(WWT_PANEL, COLOUR_DARK_GREEN, BAIRW_BOTTOMPANEL), SetPIP(2, 2, 2),
    00562     NWidget(WWT_LABEL, COLOUR_DARK_GREEN), SetDataTip(STR_STATION_BUILD_COVERAGE_AREA_TITLE, STR_NULL), SetFill(1, 0),
    00563     NWidget(NWID_HORIZONTAL),
    00564       NWidget(NWID_SPACER), SetMinimalSize(14, 0), SetFill(1, 0),
    00565       NWidget(NWID_HORIZONTAL, NC_EQUALSIZE),
    00566         NWidget(WWT_TEXTBTN, COLOUR_GREY, BAIRW_BTN_DONTHILIGHT), SetMinimalSize(60, 12), SetFill(1, 0),
    00567                       SetDataTip(STR_STATION_BUILD_COVERAGE_OFF, STR_STATION_BUILD_COVERAGE_AREA_OFF_TOOLTIP),
    00568         NWidget(WWT_TEXTBTN, COLOUR_GREY, BAIRW_BTN_DOHILIGHT), SetMinimalSize(60, 12), SetFill(1, 0),
    00569                       SetDataTip(STR_STATION_BUILD_COVERAGE_ON, STR_STATION_BUILD_COVERAGE_AREA_ON_TOOLTIP),
    00570       EndContainer(),
    00571       NWidget(NWID_SPACER), SetMinimalSize(14, 0), SetFill(1, 0),
    00572     EndContainer(),
    00573     NWidget(NWID_SPACER), SetMinimalSize(0, 10), SetResize(0, 1), SetFill(1, 0),
    00574   EndContainer(),
    00575 };
    00576
    00577 static const WindowDesc _build_airport_desc(
    00578   WDP_AUTO, 0, 0,
    00579   WC_BUILD_STATION, WC_BUILD_TOOLBAR,
    00580   WDF_CONSTRUCTION | WDF_UNCLICK_BUTTONS,
    00581   _nested_build_airport_widgets, lengthof(_nested_build_airport_widgets)
    00582 );
    00583
    00584 static void ShowBuildAirportPicker(Window *parent)
    00585 {
    00586   new BuildAirportWindow(&_build_airport_desc, parent);
    00587 }
    00588
    00589 void InitializeAirportGui()
    00590 {
    00591   _selected_airport_class = APC_BEGIN;
    00592   _selected_airport_index = -1;
    00593 }