src/rail_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 rail_gui.cpp %File for dealing with rail construction user interface */
  11
  12 #include "stdafx.h"
  13 #include "gui.h"
  14 #include "window_gui.h"
  15 #include "station_gui.h"
  16 #include "terraform_gui.h"
  17 #include "viewport_func.h"
  18 #include "command_func.h"
  19 #include "waypoint_func.h"
  20 #include "newgrf_station.h"
  21 #include "company_base.h"
  22 #include "strings_func.h"
  23 #include "window_func.h"
  24 #include "date_func.h"
  25 #include "sound_func.h"
  26 #include "company_func.h"
  27 #include "widgets/dropdown_type.h"
  28 #include "tunnelbridge.h"
  29 #include "tilehighlight_func.h"
  30 #include "spritecache.h"
  31 #include "core/geometry_func.hpp"
  32 #include "hotkeys.h"
  33 #include "engine_base.h"
  34 #include "vehicle_func.h"
  35 #include "zoom_func.h"
  36 #include "rail_gui.h"
  37 #include "tile_cmd.h"
  38 #include "station_func.h"
  39 #include "rail.h"
  40
  41 #include "map/rail.h"
  42 #include "map/depot.h"
  43 #include "map/bridge.h"
  44
  45 #include "widgets/rail_widget.h"
  46
  47
  48 static RailType _cur_railtype;               ///< Rail type of the current build-rail toolbar.
  49 static bool _remove_button_clicked;          ///< Flag whether 'remove' toggle-button is currently enabled
  50 static DiagDirection _build_depot_direction; ///< Currently selected depot direction
  51 static byte _waypoint_count = 1;             ///< Number of waypoint types
  52 static byte _cur_waypoint_type;              ///< Currently selected waypoint type
  53 static bool _convert_signal_button;          ///< convert signal button in the signal GUI pressed
  54 static SignalVariant _cur_signal_variant;    ///< set the signal variant (for signal GUI)
  55 static SignalType _cur_signal_type;          ///< set the signal type (for signal GUI)
  56
  57 /* Map the setting: default_signal_type to the corresponding signal type */
  58 static const SignalType _default_signal_type[] = {SIGTYPE_NORMAL, SIGTYPE_PBS, SIGTYPE_PBS_ONEWAY};
  59
  60 struct RailStationGUISettings {
  61         Axis orientation;                 ///< Currently selected rail station orientation
  62
  63         bool newstations;                 ///< Are custom station definitions available?
  64         StationClassID station_class;     ///< Currently selected custom station class (if newstations is \c true )
  65         byte station_type;                ///< %Station type within the currently selected custom station class (if newstations is \c true )
  66         byte station_count;               ///< Number of custom stations (if newstations is \c true )
  67 };
  68 static RailStationGUISettings _railstation; ///< Settings of the station builder GUI
  69
  70
  71 static void HandleStationPlacement(TileIndex start, TileIndex end);
  72 static void ShowBuildTrainDepotPicker(Window *parent);
  73 static void ShowBuildWaypointPicker(Window *parent);
  74 static void ShowStationBuilder(Window *parent);
  75 static void ShowSignalBuilder(Window *parent);
  76
  77 /**
  78  * Check whether a station type can be build.
  79  * @return true if building is allowed.
  80  */
  81 static bool IsStationAvailable(const StationSpec *statspec)
  82 {
  83         if (statspec == NULL || !HasBit(statspec->callback_mask, CBM_STATION_AVAIL)) return true;
  84
  85         uint16 cb_res = GetStationCallback(CBID_STATION_AVAILABILITY, 0, 0, statspec, NULL, INVALID_TILE);
  86         if (cb_res == CALLBACK_FAILED) return true;
  87
  88         return Convert8bitBooleanCallback(statspec->grf_prop.grffile, CBID_STATION_AVAILABILITY, cb_res);
  89 }
  90
  91 void CcPlaySound1E(const CommandCost &result, TileIndex tile, uint32 p1, uint32 p2)
  92 {
  93         if (result.Succeeded() && _settings_client.sound.confirm) SndPlayTileFx(SND_20_SPLAT_2, tile);
  94 }
  95
  96 void CcRailDepot(const CommandCost &result, TileIndex tile, uint32 p1, uint32 p2)
  97 {
  98         struct PlaceDepotExtraData {
  99                 DiagDirection dir;   ///< direction to check
 100                 Track         track; ///< track to build
 101         };
 102
 103         static const PlaceDepotExtraData place_depot_extra_data[4][3] = {
 104                 { {DIAGDIR_SE, TRACK_LEFT }, {DIAGDIR_SW, TRACK_X}, {DIAGDIR_NW, TRACK_LOWER} },
 105                 { {DIAGDIR_SW, TRACK_UPPER}, {DIAGDIR_NW, TRACK_Y}, {DIAGDIR_NE, TRACK_LEFT } },
 106                 { {DIAGDIR_SE, TRACK_UPPER}, {DIAGDIR_NE, TRACK_X}, {DIAGDIR_NW, TRACK_RIGHT} },
 107                 { {DIAGDIR_SW, TRACK_RIGHT}, {DIAGDIR_SE, TRACK_Y}, {DIAGDIR_NE, TRACK_LOWER} },
 108         };
 109
 110         if (result.Failed()) return;
 111
 112         DiagDirection dir = (DiagDirection)p2;
 113
 114         if (_settings_client.sound.confirm) SndPlayTileFx(SND_20_SPLAT_2, tile);
 115         if (!_settings_client.gui.persistent_buildingtools) ResetObjectToPlace();
 116
 117         tile += TileOffsByDiagDir(dir);
 118
 119         if (IsNormalRailTile(tile) && !HasSignalOnTrack(tile, TRACK_UPPER) && !HasSignalOnTrack(tile, TRACK_LOWER)) {
 120                 for (int i = 0; i < 3; i++) {
 121                         if ((GetTrackBits(tile) & DiagdirReachesTracks(place_depot_extra_data[dir][i].dir)) != TRACK_BIT_NONE) {
 122                                 DoCommandP(tile, _cur_railtype, place_depot_extra_data[dir][i].track, CMD_BUILD_SINGLE_RAIL);
 123                         }
 124                 }
 125         }
 126 }
 127
 128 /**
 129  * Place a rail waypoint.
 130  * @param tile Position to start dragging a waypoint.
 131  */
 132 static void PlaceRail_Waypoint(TileIndex tile)
 133 {
 134         if (_remove_button_clicked) {
 135                 VpStartPlaceSizing(tile, VPM_X_AND_Y, DDSP_REMOVE_STATION);
 136                 return;
 137         }
 138
 139         Axis axis = GetAxisForNewWaypoint(tile);
 140         if (IsValidAxis(axis)) {
 141                 /* Valid tile for waypoints */
 142                 VpStartPlaceSizing(tile, axis == AXIS_X ? VPM_FIX_X : VPM_FIX_Y, DDSP_BUILD_STATION);
 143         } else {
 144                 /* Tile where we can't build rail waypoints. This is always going to fail,
 145                  * but provides the user with a proper error message. */
 146                 DoCommandP(tile, 1 << 8 | 1 << 16, STAT_CLASS_WAYP | INVALID_STATION << 16, CMD_BUILD_RAIL_WAYPOINT | CMD_MSG(STR_ERROR_CAN_T_BUILD_TRAIN_WAYPOINT));
 147         }
 148 }
 149
 150 void CcStation(const CommandCost &result, TileIndex tile, uint32 p1, uint32 p2)
 151 {
 152         if (result.Failed()) return;
 153
 154         if (_settings_client.sound.confirm) SndPlayTileFx(SND_20_SPLAT_2, tile);
 155         /* Only close the station builder window if the default station and non persistent building is chosen. */
 156         if (_railstation.station_class == STAT_CLASS_DFLT && _railstation.station_type == 0 && !_settings_client.gui.persistent_buildingtools) ResetObjectToPlace();
 157 }
 158
 159 /**
 160  * Place a rail station.
 161  * @param tile Position to place or start dragging a station.
 162  */
 163 static void PlaceRail_Station(TileIndex tile)
 164 {
 165         if (_remove_button_clicked) {
 166                 VpStartPlaceSizing(tile, VPM_X_AND_Y_LIMITED, DDSP_REMOVE_STATION);
 167                 VpSetPlaceSizingLimit(-1);
 168         } else if (_settings_client.gui.station_dragdrop) {
 169                 VpStartPlaceSizing(tile, VPM_X_AND_Y_LIMITED, DDSP_BUILD_STATION);
 170                 VpSetPlaceSizingLimit(_settings_game.station.station_spread);
 171         } else {
 172                 uint32 p1 = _cur_railtype | _railstation.orientation << 4 | _settings_client.gui.station_numtracks << 8 | _settings_client.gui.station_platlength << 16 | _ctrl_pressed << 24;
 173                 uint32 p2 = _railstation.station_class | _railstation.station_type << 8 | INVALID_STATION << 16;
 174
 175                 int w = _settings_client.gui.station_numtracks;
 176                 int h = _settings_client.gui.station_platlength;
 177                 if (!_railstation.orientation) Swap(w, h);
 178
 179                 CommandContainer cmdcont = { tile, p1, p2, CMD_BUILD_RAIL_STATION | CMD_MSG(STR_ERROR_CAN_T_BUILD_RAILROAD_STATION), CcStation, "" };
 180                 ShowSelectStationIfNeeded(cmdcont, TileArea(tile, w, h));
 181         }
 182 }
 183
 184 /**
 185  * Build a new signal or edit/remove a present signal, use CmdBuildSingleSignal() or CmdRemoveSingleSignal() in rail_cmd.cpp
 186  *
 187  * @param tile The tile where the signal will build or edit
 188  */
 189 static void GenericPlaceSignals(TileIndex tile)
 190 {
 191         TrackBits trackbits = TrackStatusToTrackBits(GetTileRailwayStatus(tile));
 192
 193         if (trackbits & TRACK_BIT_VERT) { // N-S direction
 194                 trackbits = (_tile_fract_coords.x <= _tile_fract_coords.y) ? TRACK_BIT_RIGHT : TRACK_BIT_LEFT;
 195         }
 196
 197         if (trackbits & TRACK_BIT_HORZ) { // E-W direction
 198                 trackbits = (_tile_fract_coords.x + _tile_fract_coords.y <= 15) ? TRACK_BIT_UPPER : TRACK_BIT_LOWER;
 199         }
 200
 201         Track track = FindFirstTrack(trackbits);
 202
 203         if (_remove_button_clicked) {
 204                 DoCommandP(tile, track, 0, CMD_REMOVE_SIGNALS | CMD_MSG(STR_ERROR_CAN_T_REMOVE_SIGNALS_FROM), CcPlaySound1E);
 205         } else {
 206                 const Window *w = FindWindowById(WC_BUILD_SIGNAL, 0);
 207
 208                 /* Map the setting cycle_signal_types to the allowed signal bitmask. */
 209                 static const uint signal_mask[] = {
 210                         (1 << SIGTYPE_PBS) - 1,
 211                         (1 << SIGTYPE_END) - (1 << SIGTYPE_PBS),
 212                         (1 << SIGTYPE_END) - 1,
 213                 };
 214
 215                 /* various bitstuffed elements for CmdBuildSingleSignal() */
 216                 uint32 p1 = track;
 217
 218                 if (w == NULL) {
 219                         /* signal GUI not used */
 220                         SB(p1, 4, 1, ((_cur_year < _settings_client.gui.semaphore_build_before) ^ _ctrl_pressed) ? SIG_SEMAPHORE : SIG_ELECTRIC);
 221                         SB(p1, 5, 3, _default_signal_type[_settings_client.gui.default_signal_type]);
 222                         SB(p1, 17, 3, _ctrl_pressed ? SIGNALS_CYCLE_TYPE : SIGNALS_BUILD);
 223                 } else if (!_convert_signal_button) {
 224                         /* signal GUI is used, not converting */
 225                         SB(p1, 4, 1, _cur_signal_variant ^ _ctrl_pressed);
 226                         SB(p1, 5, 3, _cur_signal_type);
 227                         SB(p1, 17, 3, _ctrl_pressed ? SIGNALS_CYCLE_TYPE : SIGNALS_BUILD);
 228                 } else {
 229                         /* signal GUI is used, converting */
 230                         SB(p1, 4, 1, _cur_signal_variant ^ _ctrl_pressed);
 231                         SB(p1, 5, 3, _cur_signal_type);
 232                         SB(p1, 17, 3, _ctrl_pressed ? SIGNALS_TOGGLE_VARIANT : SIGNALS_CONVERT);
 233                 }
 234
 235                 DoCommandP(tile, p1, signal_mask[_settings_client.gui.cycle_signal_types], CMD_BUILD_SIGNALS |
 236                                 CMD_MSG((w != NULL && _convert_signal_button) ? STR_ERROR_SIGNAL_CAN_T_CONVERT_SIGNALS_HERE : STR_ERROR_CAN_T_BUILD_SIGNALS_HERE),
 237                                 CcPlaySound1E);
 238         }
 239 }
 240
 241 /**
 242  * Start placing a rail bridge.
 243  * @param tile Position of the first tile of the bridge.
 244  * @param w    Rail toolbar window.
 245  */
 246 static void PlaceRail_Bridge(TileIndex tile, Window *w)
 247 {
 248         if (IsBridgeHeadTile(tile)) {
 249                 TileIndex other_tile = GetOtherBridgeEnd(tile);
 250                 Point pt = {0, 0};
 251                 w->OnPlaceMouseUp(VPM_X_OR_Y, DDSP_BUILD_BRIDGE, pt, other_tile, tile);
 252         } else {
 253                 VpStartPlaceSizing(tile, VPM_X_OR_Y, DDSP_BUILD_BRIDGE);
 254         }
 255 }
 256
 257 /** Command callback for building a tunnel */
 258 void CcBuildRailTunnel(const CommandCost &result, TileIndex tile, uint32 p1, uint32 p2)
 259 {
 260         if (result.Succeeded()) {
 261                 if (_settings_client.sound.confirm) SndPlayTileFx(SND_20_SPLAT_2, tile);
 262                 if (!_settings_client.gui.persistent_buildingtools) ResetObjectToPlace();
 263         } else {
 264                 SetRedErrorSquare(_build_tunnel_endtile);
 265         }
 266 }
 267
 268 /**
 269  * Toggles state of the Remove button of Build rail toolbar
 270  * @param w window the button belongs to
 271  */
 272 static void ToggleRailButton_Remove(Window *w)
 273 {
 274         DeleteWindowById(WC_SELECT_STATION, 0);
 275         w->ToggleWidgetLoweredState(WID_RAT_REMOVE);
 276         w->SetWidgetDirty(WID_RAT_REMOVE);
 277         _remove_button_clicked = w->IsWidgetLowered(WID_RAT_REMOVE);
 278         SetSelectionRed(_remove_button_clicked);
 279 }
 280
 281 /**
 282  * Updates the Remove button because of Ctrl state change
 283  * @param w window the button belongs to
 284  * @return true iff the remove button was changed
 285  */
 286 static bool RailToolbar_CtrlChanged(Window *w)
 287 {
 288         if (w->IsWidgetDisabled(WID_RAT_REMOVE)) return false;
 289
 290         /* allow ctrl to switch remove mode only for these widgets */
 291         for (uint i = WID_RAT_BUILD_NS; i <= WID_RAT_BUILD_STATION; i++) {
 292                 if ((i <= WID_RAT_AUTORAIL || i >= WID_RAT_BUILD_WAYPOINT) && w->IsWidgetLowered(i)) {
 293                         ToggleRailButton_Remove(w);
 294                         return true;
 295                 }
 296         }
 297
 298         return false;
 299 }
 300
 301
 302 /**
 303  * The "remove"-button click proc of the build-rail toolbar.
 304  * @param w Build-rail toolbar window
 305  * @see BuildRailToolbarWindow::OnClick()
 306  */
 307 static void BuildRailClick_Remove(Window *w)
 308 {
 309         if (w->IsWidgetDisabled(WID_RAT_REMOVE)) return;
 310         ToggleRailButton_Remove(w);
 311         if (_settings_client.sound.click_beep) SndPlayFx(SND_15_BEEP);
 312
 313         /* handle station builder */
 314         if (w->IsWidgetLowered(WID_RAT_BUILD_STATION)) {
 315                 if (_remove_button_clicked) {
 316                         /* starting drag & drop remove */
 317                         if (!_settings_client.gui.station_dragdrop) {
 318                                 SetTileSelectSize(1, 1);
 319                         } else {
 320                                 VpSetPlaceSizingLimit(-1);
 321                         }
 322                 } else {
 323                         /* starting station build mode */
 324                         if (!_settings_client.gui.station_dragdrop) {
 325                                 int x = _settings_client.gui.station_numtracks;
 326                                 int y = _settings_client.gui.station_platlength;
 327                                 if (_railstation.orientation == 0) Swap(x, y);
 328                                 SetTileSelectSize(x, y);
 329                         } else {
 330                                 VpSetPlaceSizingLimit(_settings_game.station.station_spread);
 331                         }
 332                 }
 333         }
 334 }
 335
 336 static void HandleAutodirPlacement()
 337 {
 338         TileIndex endtile = TileVirtXY(_thd.selend.x, _thd.selend.y);
 339         Track track = (Track)(_thd.drawstyle & HT_DIR_MASK); // 0..5
 340
 341         if (_thd.drawstyle & HT_RAIL) { // one tile case
 342                 DoCommandP(endtile, _cur_railtype, track,
 343                                 _remove_button_clicked ?
 344                                 CMD_REMOVE_SINGLE_RAIL | CMD_MSG(STR_ERROR_CAN_T_REMOVE_RAILROAD_TRACK) :
 345                                 CMD_BUILD_SINGLE_RAIL | CMD_MSG(STR_ERROR_CAN_T_BUILD_RAILROAD_TRACK),
 346                                 CcPlaySound1E);
 347                 return;
 348         }
 349
 350         DoCommandP(TileVirtXY(_thd.selstart.x, _thd.selstart.y), endtile, _cur_railtype | (track << 4),
 351                         _remove_button_clicked ?
 352                         CMD_REMOVE_RAILROAD_TRACK | CMD_MSG(STR_ERROR_CAN_T_REMOVE_RAILROAD_TRACK) :
 353                         CMD_BUILD_RAILROAD_TRACK  | CMD_MSG(STR_ERROR_CAN_T_BUILD_RAILROAD_TRACK),
 354                         CcPlaySound1E);
 355 }
 356
 357 /**
 358  * Build new signals or remove signals or (if only one tile marked) edit a signal.
 359  *
 360  * If one tile marked abort and use GenericPlaceSignals()
 361  * else use CmdBuildSingleSignal() or CmdRemoveSingleSignal() in rail_cmd.cpp to build many signals
 362  */
 363 static void HandleAutoSignalPlacement()
 364 {
 365         uint32 p2 = GB(_thd.drawstyle, 0, 3); // 0..5
 366
 367         if ((_thd.drawstyle & HT_DRAG_MASK) == HT_RECT) { // one tile case
 368                 GenericPlaceSignals(TileVirtXY(_thd.selend.x, _thd.selend.y));
 369                 return;
 370         }
 371
 372         const Window *w = FindWindowById(WC_BUILD_SIGNAL, 0);
 373
 374         if (w != NULL) {
 375                 /* signal GUI is used */
 376                 SB(p2,  4, 1, _cur_signal_variant);
 377                 SB(p2,  6, 1, _ctrl_pressed);
 378                 SB(p2,  7, 3, _cur_signal_type);
 379                 SB(p2, 24, 8, _settings_client.gui.drag_signals_density);
 380                 SB(p2, 10, 1, !_settings_client.gui.drag_signals_fixed_distance);
 381         } else {
 382                 SB(p2,  4, 1, (_cur_year < _settings_client.gui.semaphore_build_before ? SIG_SEMAPHORE : SIG_ELECTRIC));
 383                 SB(p2,  6, 1, _ctrl_pressed);
 384                 SB(p2,  7, 3, _default_signal_type[_settings_client.gui.default_signal_type]);
 385                 SB(p2, 24, 8, _settings_client.gui.drag_signals_density);
 386                 SB(p2, 10, 1, !_settings_client.gui.drag_signals_fixed_distance);
 387         }
 388
 389         /* _settings_client.gui.drag_signals_density is given as a parameter such that each user
 390          * in a network game can specify his/her own signal density */
 391         DoCommandP(TileVirtXY(_thd.selstart.x, _thd.selstart.y), TileVirtXY(_thd.selend.x, _thd.selend.y), p2,
 392                         _remove_button_clicked ?
 393                         CMD_REMOVE_SIGNAL_TRACK | CMD_MSG(STR_ERROR_CAN_T_REMOVE_SIGNALS_FROM) :
 394                         CMD_BUILD_SIGNAL_TRACK  | CMD_MSG(STR_ERROR_CAN_T_BUILD_SIGNALS_HERE),
 395                         CcPlaySound1E);
 396 }
 397
 398
 399 /** Rail toolbar management class. */
 400 struct BuildRailToolbarWindow : Window {
 401         RailType railtype;    ///< Rail type to build.
 402         int last_user_action; ///< Last started user action.
 403
 404         BuildRailToolbarWindow(WindowDesc *desc, RailType railtype) : Window(desc)
 405         {
 406                 this->InitNested(TRANSPORT_RAIL);
 407                 this->SetupRailToolbar(railtype);
 408                 this->DisableWidget(WID_RAT_REMOVE);
 409                 this->last_user_action = WIDGET_LIST_END;
 410
 411                 if (_settings_client.gui.link_terraform_toolbar) ShowTerraformToolbar(this);
 412         }
 413
 414         ~BuildRailToolbarWindow()
 415         {
 416                 if (_settings_client.gui.link_terraform_toolbar) DeleteWindowById(WC_SCEN_LAND_GEN, 0, false);
 417         }
 418
 419         /**
 420          * Configures the rail toolbar for railtype given
 421          * @param railtype the railtype to display
 422          */
 423         void SetupRailToolbar(RailType railtype)
 424         {
 425                 this->railtype = railtype;
 426                 const RailtypeInfo *rti = GetRailTypeInfo(railtype);
 427
 428                 assert(railtype < RAILTYPE_END);
 429                 this->GetWidget<NWidgetCore>(WID_RAT_BUILD_NS)->widget_data     = rti->gui_sprites.build_ns_rail;
 430                 this->GetWidget<NWidgetCore>(WID_RAT_BUILD_X)->widget_data      = rti->gui_sprites.build_x_rail;
 431                 this->GetWidget<NWidgetCore>(WID_RAT_BUILD_EW)->widget_data     = rti->gui_sprites.build_ew_rail;
 432                 this->GetWidget<NWidgetCore>(WID_RAT_BUILD_Y)->widget_data      = rti->gui_sprites.build_y_rail;
 433                 this->GetWidget<NWidgetCore>(WID_RAT_AUTORAIL)->widget_data     = rti->gui_sprites.auto_rail;
 434                 this->GetWidget<NWidgetCore>(WID_RAT_BUILD_DEPOT)->widget_data  = rti->gui_sprites.build_depot;
 435                 this->GetWidget<NWidgetCore>(WID_RAT_CONVERT_RAIL)->widget_data = rti->gui_sprites.convert_rail;
 436                 this->GetWidget<NWidgetCore>(WID_RAT_BUILD_TUNNEL)->widget_data = rti->gui_sprites.build_tunnel;
 437         }
 438
 439         /**
 440          * Switch to another rail type.
 441          * @param railtype New rail type.
 442          */
 443         void ModifyRailType(RailType railtype)
 444         {
 445                 this->SetupRailToolbar(railtype);
 446                 this->ReInit();
 447         }
 448
 449         void UpdateRemoveWidgetStatus(int clicked_widget)
 450         {
 451                 switch (clicked_widget) {
 452                         case WID_RAT_REMOVE:
 453                                 /* If it is the removal button that has been clicked, do nothing,
 454                                  * as it is up to the other buttons to drive removal status */
 455                                 return;
 456
 457                         case WID_RAT_BUILD_NS:
 458                         case WID_RAT_BUILD_X:
 459                         case WID_RAT_BUILD_EW:
 460                         case WID_RAT_BUILD_Y:
 461                         case WID_RAT_AUTORAIL:
 462                         case WID_RAT_BUILD_WAYPOINT:
 463                         case WID_RAT_BUILD_STATION:
 464                         case WID_RAT_BUILD_SIGNALS:
 465                                 /* Removal button is enabled only if the rail/signal/waypoint/station
 466                                  * button is still lowered.  Once raised, it has to be disabled */
 467                                 this->SetWidgetDisabledState(WID_RAT_REMOVE, !this->IsWidgetLowered(clicked_widget));
 468                                 break;
 469
 470                         default:
 471                                 /* When any other buttons than rail/signal/waypoint/station, raise and
 472                                  * disable the removal button */
 473                                 this->DisableWidget(WID_RAT_REMOVE);
 474                                 this->RaiseWidget(WID_RAT_REMOVE);
 475                                 break;
 476                 }
 477         }
 478
 479         virtual void SetStringParameters(int widget) const
 480         {
 481                 if (widget == WID_RAT_CAPTION) {
 482                         const RailtypeInfo *rti = GetRailTypeInfo(this->railtype);
 483                         if (rti->max_speed > 0) {
 484                                 SetDParam(0, STR_TOOLBAR_RAILTYPE_VELOCITY);
 485                                 SetDParam(1, rti->strings.toolbar_caption);
 486                                 SetDParam(2, rti->max_speed);
 487                         } else {
 488                                 SetDParam(0, rti->strings.toolbar_caption);
 489                         }
 490                 }
 491         }
 492
 493         virtual void OnClick(Point pt, int widget, int click_count)
 494         {
 495                 if (widget < WID_RAT_BUILD_NS) return;
 496
 497                 _remove_button_clicked = false;
 498                 switch (widget) {
 499                         case WID_RAT_BUILD_NS:
 500                                 HandlePlacePushButton(this, WID_RAT_BUILD_NS, GetRailTypeInfo(_cur_railtype)->cursor.rail_ns, HT_LINE | HT_DIR_VL);
 501                                 this->last_user_action = widget;
 502                                 break;
 503
 504                         case WID_RAT_BUILD_X:
 505                                 HandlePlacePushButton(this, WID_RAT_BUILD_X, GetRailTypeInfo(_cur_railtype)->cursor.rail_swne, HT_LINE | HT_DIR_X);
 506                                 this->last_user_action = widget;
 507                                 break;
 508
 509                         case WID_RAT_BUILD_EW:
 510                                 HandlePlacePushButton(this, WID_RAT_BUILD_EW, GetRailTypeInfo(_cur_railtype)->cursor.rail_ew, HT_LINE | HT_DIR_HL);
 511                                 this->last_user_action = widget;
 512                                 break;
 513
 514                         case WID_RAT_BUILD_Y:
 515                                 HandlePlacePushButton(this, WID_RAT_BUILD_Y, GetRailTypeInfo(_cur_railtype)->cursor.rail_nwse, HT_LINE | HT_DIR_Y);
 516                                 this->last_user_action = widget;
 517                                 break;
 518
 519                         case WID_RAT_AUTORAIL:
 520                                 HandlePlacePushButton(this, WID_RAT_AUTORAIL, GetRailTypeInfo(_cur_railtype)->cursor.autorail, HT_RAIL);
 521                                 this->last_user_action = widget;
 522                                 break;
 523
 524                         case WID_RAT_DEMOLISH:
 525                                 HandlePlacePushButton(this, WID_RAT_DEMOLISH, ANIMCURSOR_DEMOLISH, HT_RECT | HT_DIAGONAL);
 526                                 this->last_user_action = widget;
 527                                 break;
 528
 529                         case WID_RAT_BUILD_DEPOT:
 530                                 if (HandlePlacePushButton(this, WID_RAT_BUILD_DEPOT, GetRailTypeInfo(_cur_railtype)->cursor.depot, HT_RECT)) {
 531                                         ShowBuildTrainDepotPicker(this);
 532                                         this->last_user_action = widget;
 533                                 }
 534                                 break;
 535
 536                         case WID_RAT_BUILD_WAYPOINT:
 537                                 this->last_user_action = widget;
 538                                 _waypoint_count = StationClass::Get(STAT_CLASS_WAYP)->GetSpecCount();
 539                                 if (HandlePlacePushButton(this, WID_RAT_BUILD_WAYPOINT, SPR_CURSOR_WAYPOINT, HT_RECT) && _waypoint_count > 1) {
 540                                         ShowBuildWaypointPicker(this);
 541                                 }
 542                                 break;
 543
 544                         case WID_RAT_BUILD_STATION:
 545                                 if (HandlePlacePushButton(this, WID_RAT_BUILD_STATION, SPR_CURSOR_RAIL_STATION, HT_RECT)) {
 546                                         ShowStationBuilder(this);
 547                                         this->last_user_action = widget;
 548                                 }
 549                                 break;
 550
 551                         case WID_RAT_BUILD_SIGNALS: {
 552                                 this->last_user_action = widget;
 553                                 bool started = HandlePlacePushButton(this, WID_RAT_BUILD_SIGNALS, ANIMCURSOR_BUILDSIGNALS, HT_RECT);
 554                                 if (started && _settings_client.gui.enable_signal_gui != _ctrl_pressed) {
 555                                         ShowSignalBuilder(this);
 556                                 }
 557                                 break;
 558                         }
 559
 560                         case WID_RAT_BUILD_BRIDGE:
 561                                 HandlePlacePushButton(this, WID_RAT_BUILD_BRIDGE, SPR_CURSOR_BRIDGE, HT_RECT);
 562                                 this->last_user_action = widget;
 563                                 break;
 564
 565                         case WID_RAT_BUILD_TUNNEL:
 566                                 HandlePlacePushButton(this, WID_RAT_BUILD_TUNNEL, GetRailTypeInfo(_cur_railtype)->cursor.tunnel, HT_SPECIAL);
 567                                 this->last_user_action = widget;
 568                                 break;
 569
 570                         case WID_RAT_REMOVE:
 571                                 BuildRailClick_Remove(this);
 572                                 break;
 573
 574                         case WID_RAT_CONVERT_RAIL:
 575                                 HandlePlacePushButton(this, WID_RAT_CONVERT_RAIL, GetRailTypeInfo(_cur_railtype)->cursor.convert, HT_RECT | HT_DIAGONAL);
 576                                 this->last_user_action = widget;
 577                                 break;
 578
 579                         default: NOT_REACHED();
 580                 }
 581                 this->UpdateRemoveWidgetStatus(widget);
 582                 if (_ctrl_pressed) RailToolbar_CtrlChanged(this);
 583         }
 584
 585         virtual EventState OnHotkey(int hotkey)
 586         {
 587                 MarkTileDirtyByTile(TileVirtXY(_thd.pos.x, _thd.pos.y)); // redraw tile selection
 588                 return Window::OnHotkey(hotkey);
 589         }
 590
 591         virtual void OnPlaceObject(Point pt, TileIndex tile)
 592         {
 593                 switch (this->last_user_action) {
 594                         case WID_RAT_BUILD_NS:
 595                                 VpStartPlaceSizing(tile, VPM_FIX_VERTICAL | VPM_RAILDIRS, DDSP_PLACE_RAIL);
 596                                 break;
 597
 598                         case WID_RAT_BUILD_X:
 599                                 VpStartPlaceSizing(tile, VPM_FIX_Y | VPM_RAILDIRS, DDSP_PLACE_RAIL);
 600                                 break;
 601
 602                         case WID_RAT_BUILD_EW:
 603                                 VpStartPlaceSizing(tile, VPM_FIX_HORIZONTAL | VPM_RAILDIRS, DDSP_PLACE_RAIL);
 604                                 break;
 605
 606                         case WID_RAT_BUILD_Y:
 607                                 VpStartPlaceSizing(tile, VPM_FIX_X | VPM_RAILDIRS, DDSP_PLACE_RAIL);
 608                                 break;
 609
 610                         case WID_RAT_AUTORAIL:
 611                                 VpStartPlaceSizing(tile, VPM_RAILDIRS, DDSP_PLACE_RAIL);
 612                                 break;
 613
 614                         case WID_RAT_DEMOLISH:
 615                                 PlaceProc_DemolishArea(tile);
 616                                 break;
 617
 618                         case WID_RAT_BUILD_DEPOT:
 619                                 DoCommandP(tile, _cur_railtype, _build_depot_direction,
 620                                                 CMD_BUILD_TRAIN_DEPOT | CMD_MSG(STR_ERROR_CAN_T_BUILD_TRAIN_DEPOT),
 621                                                 CcRailDepot);
 622                                 break;
 623
 624                         case WID_RAT_BUILD_WAYPOINT:
 625                                 PlaceRail_Waypoint(tile);
 626                                 break;
 627
 628                         case WID_RAT_BUILD_STATION:
 629                                 PlaceRail_Station(tile);
 630                                 break;
 631
 632                         case WID_RAT_BUILD_SIGNALS:
 633                                 VpStartPlaceSizing(tile, VPM_SIGNALDIRS, DDSP_BUILD_SIGNALS);
 634                                 break;
 635
 636                         case WID_RAT_BUILD_BRIDGE:
 637                                 PlaceRail_Bridge(tile, this);
 638                                 break;
 639
 640                         case WID_RAT_BUILD_TUNNEL:
 641                                 DoCommandP(tile, _cur_railtype | (TRANSPORT_RAIL << 8), 0, CMD_BUILD_TUNNEL | CMD_MSG(STR_ERROR_CAN_T_BUILD_TUNNEL_HERE), CcBuildRailTunnel);
 642                                 break;
 643
 644                         case WID_RAT_CONVERT_RAIL:
 645                                 VpStartPlaceSizing(tile, VPM_X_AND_Y, DDSP_CONVERT_RAIL);
 646                                 break;
 647
 648                         default: NOT_REACHED();
 649                 }
 650         }
 651
 652         virtual void OnPlaceDrag(ViewportPlaceMethod select_method, ViewportDragDropSelectionProcess select_proc, Point pt)
 653         {
 654                 /* no dragging if you have pressed the convert button */
 655                 if (FindWindowById(WC_BUILD_SIGNAL, 0) != NULL && _convert_signal_button && this->IsWidgetLowered(WID_RAT_BUILD_SIGNALS)) return;
 656
 657                 VpSelectTilesWithMethod(pt.x, pt.y, select_method);
 658         }
 659
 660         virtual void OnPlaceMouseUp(ViewportPlaceMethod select_method, ViewportDragDropSelectionProcess select_proc, Point pt, TileIndex start_tile, TileIndex end_tile)
 661         {
 662                 if (pt.x != -1) {
 663                         switch (select_proc) {
 664                                 default: NOT_REACHED();
 665                                 case DDSP_BUILD_BRIDGE:
 666                                         if (!_settings_client.gui.persistent_buildingtools) ResetObjectToPlace();
 667                                         ShowBuildBridgeWindow(start_tile, end_tile, TRANSPORT_RAIL, _cur_railtype);
 668                                         break;
 669
 670                                 case DDSP_PLACE_RAIL:
 671                                         HandleAutodirPlacement();
 672                                         break;
 673
 674                                 case DDSP_BUILD_SIGNALS:
 675                                         HandleAutoSignalPlacement();
 676                                         break;
 677
 678                                 case DDSP_DEMOLISH_AREA:
 679                                         GUIPlaceProcDragXY(select_proc, start_tile, end_tile);
 680                                         break;
 681
 682                                 case DDSP_CONVERT_RAIL:
 683                                         DoCommandP(end_tile, start_tile, _cur_railtype | (_ctrl_pressed ? 0x10 : 0), CMD_CONVERT_RAIL | CMD_MSG(STR_ERROR_CAN_T_CONVERT_RAIL), CcPlaySound10);
 684                                         break;
 685
 686                                 case DDSP_REMOVE_STATION:
 687                                 case DDSP_BUILD_STATION:
 688                                         if (this->IsWidgetLowered(WID_RAT_BUILD_STATION)) {
 689                                                 /* Station */
 690                                                 if (_remove_button_clicked) {
 691                                                         DoCommandP(end_tile, start_tile, _ctrl_pressed ? 0 : 1, CMD_REMOVE_FROM_RAIL_STATION | CMD_MSG(STR_ERROR_CAN_T_REMOVE_PART_OF_STATION), CcPlaySound1E);
 692                                                 } else {
 693                                                         HandleStationPlacement(start_tile, end_tile);
 694                                                 }
 695                                         } else {
 696                                                 /* Waypoint */
 697                                                 if (_remove_button_clicked) {
 698                                                         DoCommandP(end_tile, start_tile, _ctrl_pressed ? 0 : 1, CMD_REMOVE_FROM_RAIL_WAYPOINT | CMD_MSG(STR_ERROR_CAN_T_REMOVE_TRAIN_WAYPOINT), CcPlaySound1E);
 699                                                 } else {
 700                                                         TileArea ta(start_tile, end_tile);
 701                                                         uint32 p1 = _cur_railtype | (select_method == VPM_FIX_X ? AXIS_X : AXIS_Y) << 4 | ta.w << 8 | ta.h << 16 | _ctrl_pressed << 24;
 702                                                         uint32 p2 = STAT_CLASS_WAYP | _cur_waypoint_type << 8 | INVALID_STATION << 16;
 703
 704                                                         CommandContainer cmdcont = { ta.tile, p1, p2, CMD_BUILD_RAIL_WAYPOINT | CMD_MSG(STR_ERROR_CAN_T_BUILD_TRAIN_WAYPOINT), CcPlaySound1E, "" };
 705                                                         ShowSelectWaypointIfNeeded(cmdcont, ta);
 706                                                 }
 707                                         }
 708                                         break;
 709                         }
 710                 }
 711         }
 712
 713         virtual void OnPlaceObjectAbort()
 714         {
 715                 this->RaiseButtons();
 716                 this->DisableWidget(WID_RAT_REMOVE);
 717                 this->SetWidgetDirty(WID_RAT_REMOVE);
 718
 719                 DeleteWindowById(WC_BUILD_SIGNAL, TRANSPORT_RAIL);
 720                 DeleteWindowById(WC_BUILD_STATION, TRANSPORT_RAIL);
 721                 DeleteWindowById(WC_BUILD_DEPOT, TRANSPORT_RAIL);
 722                 DeleteWindowById(WC_BUILD_WAYPOINT, TRANSPORT_RAIL);
 723                 DeleteWindowById(WC_SELECT_STATION, 0);
 724                 DeleteWindowByClass(WC_BUILD_BRIDGE);
 725         }
 726
 727         virtual void OnPlacePresize(Point pt, TileIndex tile)
 728         {
 729                 DoCommand(tile, _cur_railtype | (TRANSPORT_RAIL << 8), 0, DC_AUTO, CMD_BUILD_TUNNEL);
 730                 VpSetPresizeRange(tile, _build_tunnel_endtile == 0 ? tile : _build_tunnel_endtile);
 731         }
 732
 733         virtual EventState OnCTRLStateChange()
 734         {
 735                 /* do not toggle Remove button by Ctrl when placing station */
 736                 if (!this->IsWidgetLowered(WID_RAT_BUILD_STATION) && !this->IsWidgetLowered(WID_RAT_BUILD_WAYPOINT) && RailToolbar_CtrlChanged(this)) return ES_HANDLED;
 737                 return ES_NOT_HANDLED;
 738         }
 739
 740         static HotkeyList hotkeys;
 741 };
 742
 743 /**
 744  * Handler for global hotkeys of the BuildRailToolbarWindow.
 745  * @param hotkey Hotkey
 746  * @return ES_HANDLED if hotkey was accepted.
 747  */
 748 static EventState RailToolbarGlobalHotkeys(int hotkey)
 749 {
 750         if (_game_mode != GM_NORMAL || !CanBuildVehicleInfrastructure(VEH_TRAIN)) return ES_NOT_HANDLED;
 751         extern RailType _last_built_railtype;
 752         Window *w = ShowBuildRailToolbar(_last_built_railtype);
 753         if (w == NULL) return ES_NOT_HANDLED;
 754         return w->OnHotkey(hotkey);
 755 }
 756
 757 const uint16 _railtoolbar_autorail_keys[] = {'5', 'A' | WKC_GLOBAL_HOTKEY, 0};
 758
 759 static Hotkey railtoolbar_hotkeys[] = {
 760         Hotkey('1', "build_ns", WID_RAT_BUILD_NS),
 761         Hotkey('2', "build_x", WID_RAT_BUILD_X),
 762         Hotkey('3', "build_ew", WID_RAT_BUILD_EW),
 763         Hotkey('4', "build_y", WID_RAT_BUILD_Y),
 764         Hotkey(_railtoolbar_autorail_keys, "autorail", WID_RAT_AUTORAIL),
 765         Hotkey('6', "demolish", WID_RAT_DEMOLISH),
 766         Hotkey('7', "depot", WID_RAT_BUILD_DEPOT),
 767         Hotkey('8', "waypoint", WID_RAT_BUILD_WAYPOINT),
 768         Hotkey('9', "station", WID_RAT_BUILD_STATION),
 769         Hotkey('S', "signal", WID_RAT_BUILD_SIGNALS),
 770         Hotkey('B', "bridge", WID_RAT_BUILD_BRIDGE),
 771         Hotkey('T', "tunnel", WID_RAT_BUILD_TUNNEL),
 772         Hotkey('R', "remove", WID_RAT_REMOVE),
 773         Hotkey('C', "convert", WID_RAT_CONVERT_RAIL),
 774         HOTKEY_LIST_END
 775 };
 776 HotkeyList BuildRailToolbarWindow::hotkeys("railtoolbar", railtoolbar_hotkeys, RailToolbarGlobalHotkeys);
 777
 778 static const NWidgetPart _nested_build_rail_widgets[] = {
 779         NWidget(NWID_HORIZONTAL),
 780                 NWidget(WWT_CLOSEBOX, COLOUR_DARK_GREEN),
 781                 NWidget(WWT_CAPTION, COLOUR_DARK_GREEN, WID_RAT_CAPTION), SetDataTip(STR_WHITE_STRING, STR_TOOLTIP_WINDOW_TITLE_DRAG_THIS),
 782                 NWidget(WWT_STICKYBOX, COLOUR_DARK_GREEN),
 783         EndContainer(),
 784         NWidget(NWID_HORIZONTAL),
 785                 NWidget(WWT_IMGBTN, COLOUR_DARK_GREEN, WID_RAT_BUILD_NS),
 786                                                 SetFill(0, 1), SetMinimalSize(22, 22), SetDataTip(SPR_IMG_RAIL_NS, STR_RAIL_TOOLBAR_TOOLTIP_BUILD_RAILROAD_TRACK),
 787                 NWidget(WWT_IMGBTN, COLOUR_DARK_GREEN, WID_RAT_BUILD_X),
 788                                                 SetFill(0, 1), SetMinimalSize(22, 22), SetDataTip(SPR_IMG_RAIL_NE, STR_RAIL_TOOLBAR_TOOLTIP_BUILD_RAILROAD_TRACK),
 789                 NWidget(WWT_IMGBTN, COLOUR_DARK_GREEN, WID_RAT_BUILD_EW),
 790                                                 SetFill(0, 1), SetMinimalSize(22, 22), SetDataTip(SPR_IMG_RAIL_EW, STR_RAIL_TOOLBAR_TOOLTIP_BUILD_RAILROAD_TRACK),
 791                 NWidget(WWT_IMGBTN, COLOUR_DARK_GREEN, WID_RAT_BUILD_Y),
 792                                                 SetFill(0, 1), SetMinimalSize(22, 22), SetDataTip(SPR_IMG_RAIL_NW, STR_RAIL_TOOLBAR_TOOLTIP_BUILD_RAILROAD_TRACK),
 793                 NWidget(WWT_IMGBTN, COLOUR_DARK_GREEN, WID_RAT_AUTORAIL),
 794                                                 SetFill(0, 1), SetMinimalSize(22, 22), SetDataTip(SPR_IMG_AUTORAIL, STR_RAIL_TOOLBAR_TOOLTIP_BUILD_AUTORAIL),
 795
 796                 NWidget(WWT_PANEL, COLOUR_DARK_GREEN), SetMinimalSize(4, 22), SetDataTip(0x0, STR_NULL), EndContainer(),
 797
 798                 NWidget(WWT_IMGBTN, COLOUR_DARK_GREEN, WID_RAT_DEMOLISH),
 799                                                 SetFill(0, 1), SetMinimalSize(22, 22), SetDataTip(SPR_IMG_DYNAMITE, STR_TOOLTIP_DEMOLISH_BUILDINGS_ETC),
 800                 NWidget(WWT_IMGBTN, COLOUR_DARK_GREEN, WID_RAT_BUILD_DEPOT),
 801                                                 SetFill(0, 1), SetMinimalSize(22, 22), SetDataTip(SPR_IMG_DEPOT_RAIL, STR_RAIL_TOOLBAR_TOOLTIP_BUILD_TRAIN_DEPOT_FOR_BUILDING),
 802                 NWidget(WWT_IMGBTN, COLOUR_DARK_GREEN, WID_RAT_BUILD_WAYPOINT),
 803                                                 SetFill(0, 1), SetMinimalSize(22, 22), SetDataTip(SPR_IMG_WAYPOINT, STR_RAIL_TOOLBAR_TOOLTIP_CONVERT_RAIL_TO_WAYPOINT),
 804                 NWidget(WWT_IMGBTN, COLOUR_DARK_GREEN, WID_RAT_BUILD_STATION),
 805                                                 SetFill(0, 1), SetMinimalSize(42, 22), SetDataTip(SPR_IMG_RAIL_STATION, STR_RAIL_TOOLBAR_TOOLTIP_BUILD_RAILROAD_STATION),
 806                 NWidget(WWT_IMGBTN, COLOUR_DARK_GREEN, WID_RAT_BUILD_SIGNALS),
 807                                                 SetFill(0, 1), SetMinimalSize(22, 22), SetDataTip(SPR_IMG_RAIL_SIGNALS, STR_RAIL_TOOLBAR_TOOLTIP_BUILD_RAILROAD_SIGNALS),
 808                 NWidget(WWT_IMGBTN, COLOUR_DARK_GREEN, WID_RAT_BUILD_BRIDGE),
 809                                                 SetFill(0, 1), SetMinimalSize(42, 22), SetDataTip(SPR_IMG_BRIDGE, STR_RAIL_TOOLBAR_TOOLTIP_BUILD_RAILROAD_BRIDGE),
 810                 NWidget(WWT_IMGBTN, COLOUR_DARK_GREEN, WID_RAT_BUILD_TUNNEL),
 811                                                 SetFill(0, 1), SetMinimalSize(20, 22), SetDataTip(SPR_IMG_TUNNEL_RAIL, STR_RAIL_TOOLBAR_TOOLTIP_BUILD_RAILROAD_TUNNEL),
 812                 NWidget(WWT_IMGBTN, COLOUR_DARK_GREEN, WID_RAT_REMOVE),
 813                                                 SetFill(0, 1), SetMinimalSize(22, 22), SetDataTip(SPR_IMG_REMOVE, STR_RAIL_TOOLBAR_TOOLTIP_TOGGLE_BUILD_REMOVE_FOR),
 814                 NWidget(WWT_IMGBTN, COLOUR_DARK_GREEN, WID_RAT_CONVERT_RAIL),
 815                                                 SetFill(0, 1), SetMinimalSize(22, 22), SetDataTip(SPR_IMG_CONVERT_RAIL, STR_RAIL_TOOLBAR_TOOLTIP_CONVERT_RAIL),
 816         EndContainer(),
 817 };
 818
 819 static WindowDesc _build_rail_desc(
 820         WDP_ALIGN_TOOLBAR, "toolbar_rail", 0, 0,
 821         WC_BUILD_TOOLBAR, WC_NONE,
 822         WDF_CONSTRUCTION,
 823         _nested_build_rail_widgets, lengthof(_nested_build_rail_widgets),
 824         &BuildRailToolbarWindow::hotkeys
 825 );
 826
 827
 828 /**
 829  * Open the build rail toolbar window for a specific rail type.
 830  *
 831  * If the terraform toolbar is linked to the toolbar, that window is also opened.
 832  *
 833  * @param railtype Rail type to open the window for
 834  * @return newly opened rail toolbar, or NULL if the toolbar could not be opened.
 835  */
 836 Window *ShowBuildRailToolbar(RailType railtype)
 837 {
 838         if (!Company::IsValidID(_local_company)) return NULL;
 839         if (!ValParamRailtype(railtype)) return NULL;
 840
 841         DeleteWindowByClass(WC_BUILD_TOOLBAR);
 842         _cur_railtype = railtype;
 843         _remove_button_clicked = false;
 844         return new BuildRailToolbarWindow(&_build_rail_desc, railtype);
 845 }
 846
 847 /* TODO: For custom stations, respect their allowed platforms/lengths bitmasks!
 848  * --pasky */
 849
 850 static void HandleStationPlacement(TileIndex start, TileIndex end)
 851 {
 852         TileArea ta(start, end);
 853         uint numtracks = ta.w;
 854         uint platlength = ta.h;
 855
 856         if (_railstation.orientation == AXIS_X) Swap(numtracks, platlength);
 857
 858         uint32 p1 = _cur_railtype | _railstation.orientation << 4 | numtracks << 8 | platlength << 16 | _ctrl_pressed << 24;
 859         uint32 p2 = _railstation.station_class | _railstation.station_type << 8 | INVALID_STATION << 16;
 860
 861         CommandContainer cmdcont = { ta.tile, p1, p2, CMD_BUILD_RAIL_STATION | CMD_MSG(STR_ERROR_CAN_T_BUILD_RAILROAD_STATION), CcStation, "" };
 862         ShowSelectStationIfNeeded(cmdcont, ta);
 863 }
 864
 865 struct BuildRailStationWindow : public PickerWindowBase {
 866 private:
 867         uint line_height;     ///< Height of a single line in the newstation selection matrix (#WID_BRAS_NEWST_LIST widget).
 868         uint coverage_height; ///< Height of the coverage texts.
 869         Scrollbar *vscroll;   ///< Vertical scrollbar of the new station list.
 870         Scrollbar *vscroll2;  ///< Vertical scrollbar of the matrix with new stations.
 871
 872         /**
 873          * Verify whether the currently selected station size is allowed after selecting a new station class/type.
 874          * If not, change the station size variables ( _settings_client.gui.station_numtracks and _settings_client.gui.station_platlength ).
 875          * @param statspec Specification of the new station class/type
 876          */
 877         void CheckSelectedSize(const StationSpec *statspec)
 878         {
 879                 if (statspec == NULL || _settings_client.gui.station_dragdrop) return;
 880
 881                 /* If current number of tracks is not allowed, make it as big as possible (which is always less than currently selected) */
 882                 if (HasBit(statspec->disallowed_platforms, _settings_client.gui.station_numtracks - 1)) {
 883                         this->RaiseWidget(_settings_client.gui.station_numtracks + WID_BRAS_PLATFORM_NUM_BEGIN);
 884                         _settings_client.gui.station_numtracks = 1;
 885                         while (HasBit(statspec->disallowed_platforms, _settings_client.gui.station_numtracks - 1)) {
 886                                 _settings_client.gui.station_numtracks++;
 887                         }
 888                         this->LowerWidget(_settings_client.gui.station_numtracks + WID_BRAS_PLATFORM_NUM_BEGIN);
 889                 }
 890
 891                 if (HasBit(statspec->disallowed_lengths, _settings_client.gui.station_platlength - 1)) {
 892                         this->RaiseWidget(_settings_client.gui.station_platlength + WID_BRAS_PLATFORM_LEN_BEGIN);
 893                         _settings_client.gui.station_platlength = 1;
 894                         while (HasBit(statspec->disallowed_lengths, _settings_client.gui.station_platlength - 1)) {
 895                                 _settings_client.gui.station_platlength++;
 896                         }
 897                         this->LowerWidget(_settings_client.gui.station_platlength + WID_BRAS_PLATFORM_LEN_BEGIN);
 898                 }
 899         }
 900
 901 public:
 902         BuildRailStationWindow(WindowDesc *desc, Window *parent, bool newstation) : PickerWindowBase(desc, parent)
 903         {
 904                 this->coverage_height = 2 * FONT_HEIGHT_NORMAL + 3 * WD_PAR_VSEP_NORMAL;
 905                 this->vscroll = NULL;
 906                 _railstation.newstations = newstation;
 907
 908                 this->CreateNestedTree();
 909                 NWidgetStacked *newst_additions = this->GetWidget<NWidgetStacked>(WID_BRAS_SHOW_NEWST_ADDITIONS);
 910                 newst_additions->SetDisplayedPlane(newstation ? 0 : SZSP_NONE);
 911                 newst_additions = this->GetWidget<NWidgetStacked>(WID_BRAS_SHOW_NEWST_MATRIX);
 912                 newst_additions->SetDisplayedPlane(newstation ? 0 : SZSP_NONE);
 913                 newst_additions = this->GetWidget<NWidgetStacked>(WID_BRAS_SHOW_NEWST_DEFSIZE);
 914                 newst_additions->SetDisplayedPlane(newstation ? 0 : SZSP_NONE);
 915                 newst_additions = this->GetWidget<NWidgetStacked>(WID_BRAS_SHOW_NEWST_RESIZE);
 916                 newst_additions->SetDisplayedPlane(newstation ? 0 : SZSP_NONE);
 917                 if (newstation) {
 918                         this->vscroll = this->GetScrollbar(WID_BRAS_NEWST_SCROLL);
 919                         this->vscroll2 = this->GetScrollbar(WID_BRAS_MATRIX_SCROLL);
 920                 }
 921                 this->FinishInitNested(TRANSPORT_RAIL);
 922
 923                 this->LowerWidget(_railstation.orientation + WID_BRAS_PLATFORM_DIR_X);
 924                 if (_settings_client.gui.station_dragdrop) {
 925                         this->LowerWidget(WID_BRAS_PLATFORM_DRAG_N_DROP);
 926                 } else {
 927                         this->LowerWidget(_settings_client.gui.station_numtracks + WID_BRAS_PLATFORM_NUM_BEGIN);
 928                         this->LowerWidget(_settings_client.gui.station_platlength + WID_BRAS_PLATFORM_LEN_BEGIN);
 929                 }
 930                 this->SetWidgetLoweredState(WID_BRAS_HIGHLIGHT_OFF, !_settings_client.gui.station_show_coverage);
 931                 this->SetWidgetLoweredState(WID_BRAS_HIGHLIGHT_ON, _settings_client.gui.station_show_coverage);
 932
 933                 if (!newstation || _railstation.station_class >= (int)StationClass::GetClassCount()) {
 934                         /* New stations are not available or changed, so ensure the default station
 935                          * type is 'selected'. */
 936                         _railstation.station_class = STAT_CLASS_DFLT;
 937                         _railstation.station_type = 0;
 938                         this->vscroll2 = NULL;
 939                 }
 940                 if (newstation) {
 941                         _railstation.station_count = StationClass::Get(_railstation.station_class)->GetSpecCount();
 942                         _railstation.station_type = min(_railstation.station_type, _railstation.station_count - 1);
 943
 944                         int count = 0;
 945                         for (uint i = 0; i < StationClass::GetClassCount(); i++) {
 946                                 if (i == STAT_CLASS_WAYP) continue;
 947                                 count++;
 948                         }
 949                         this->vscroll->SetCount(count);
 950                         this->vscroll->SetPosition(Clamp(_railstation.station_class - 2, 0, max(this->vscroll->GetCount() - this->vscroll->GetCapacity(), 0)));
 951
 952                         NWidgetMatrix *matrix = this->GetWidget<NWidgetMatrix>(WID_BRAS_MATRIX);
 953                         matrix->SetScrollbar(this->vscroll2);
 954                         matrix->SetCount(_railstation.station_count);
 955                         matrix->SetClicked(_railstation.station_type);
 956                 }
 957         }
 958
 959         virtual ~BuildRailStationWindow()
 960         {
 961                 DeleteWindowById(WC_SELECT_STATION, 0);
 962         }
 963
 964         virtual void OnPaint()
 965         {
 966                 bool newstations = _railstation.newstations;
 967                 const StationSpec *statspec = newstations ? StationClass::Get(_railstation.station_class)->GetSpec(_railstation.station_type) : NULL;
 968
 969                 if (_settings_client.gui.station_dragdrop) {
 970                         SetTileSelectSize(1, 1);
 971                 } else {
 972                         int x = _settings_client.gui.station_numtracks;
 973                         int y = _settings_client.gui.station_platlength;
 974                         if (_railstation.orientation == AXIS_X) Swap(x, y);
 975                         if (!_remove_button_clicked) {
 976                                 SetTileSelectSize(x, y);
 977                         }
 978                 }
 979
 980                 int rad = (_settings_game.station.modified_catchment) ? CA_TRAIN : CA_UNMODIFIED;
 981
 982                 if (_settings_client.gui.station_show_coverage) SetTileSelectBigSize(-rad, -rad, 2 * rad, 2 * rad);
 983
 984                 for (uint bits = 0; bits < 7; bits++) {
 985                         bool disable = bits >= _settings_game.station.station_spread;
 986                         if (statspec == NULL) {
 987                                 this->SetWidgetDisabledState(bits + WID_BRAS_PLATFORM_NUM_1, disable);
 988                                 this->SetWidgetDisabledState(bits + WID_BRAS_PLATFORM_LEN_1, disable);
 989                         } else {
 990                                 this->SetWidgetDisabledState(bits + WID_BRAS_PLATFORM_NUM_1, HasBit(statspec->disallowed_platforms, bits) || disable);
 991                                 this->SetWidgetDisabledState(bits + WID_BRAS_PLATFORM_LEN_1, HasBit(statspec->disallowed_lengths,   bits) || disable);
 992                         }
 993                 }
 994
 995                 this->DrawWidgets();
 996
 997                 /* 'Accepts' and 'Supplies' texts. */
 998                 NWidgetBase *cov = this->GetWidget<NWidgetBase>(WID_BRAS_COVERAGE_TEXTS);
 999                 int top = cov->pos_y + WD_PAR_VSEP_NORMAL;
1000                 int left = cov->pos_x + WD_FRAMERECT_LEFT;
1001                 int right = cov->pos_x + cov->current_x - WD_FRAMERECT_RIGHT;
1002                 int bottom = cov->pos_y + cov->current_y;
1003                 top = DrawStationCoverageAreaText(left, right, top, SCT_ALL, rad, false) + WD_PAR_VSEP_NORMAL;
1004                 top = DrawStationCoverageAreaText(left, right, top, SCT_ALL, rad, true) + WD_PAR_VSEP_NORMAL;
1005                 /* Resize background if the window is too small.
1006                  * Never make the window smaller to avoid oscillating if the size change affects the acceptance.
1007                  * (This is the case, if making the window bigger moves the mouse into the window.) */
1008                 if (top > bottom) {
1009                         this->coverage_height += top - bottom;
1010                         this->ReInit();
1011                 }
1012         }
1013
1014         virtual void UpdateWidgetSize(int widget, Dimension *size, const Dimension &padding, Dimension *fill, Dimension *resize)
1015         {
1016                 switch (widget) {
1017                         case WID_BRAS_NEWST_LIST: {
1018                                 Dimension d = {0, 0};
1019                                 for (uint i = 0; i < StationClass::GetClassCount(); i++) {
1020                                         if (i == STAT_CLASS_WAYP) continue;
1021                                         SetDParam(0, StationClass::Get((StationClassID)i)->name);
1022                                         d = maxdim(d, GetStringBoundingBox(STR_BLACK_STRING));
1023                                 }
1024                                 size->width = max(size->width, d.width + padding.width);
1025                                 this->line_height = FONT_HEIGHT_NORMAL + WD_MATRIX_TOP + WD_MATRIX_BOTTOM;
1026                                 size->height = 5 * this->line_height;
1027                                 resize->height = this->line_height;
1028                                 break;
1029                         }
1030
1031                         case WID_BRAS_SHOW_NEWST_TYPE: {
1032                                 if (!_railstation.newstations) {
1033                                         size->width = 0;
1034                                         size->height = 0;
1035                                         break;
1036                                 }
1037
1038                                 /* If newstations exist, compute the non-zero minimal size. */
1039                                 Dimension d = {0, 0};
1040                                 StringID str = this->GetWidget<NWidgetCore>(widget)->widget_data;
1041                                 for (StationClassID statclass = STAT_CLASS_BEGIN; statclass < (StationClassID)StationClass::GetClassCount(); statclass++) {
1042                                         if (statclass == STAT_CLASS_WAYP) continue;
1043                                         StationClass *stclass = StationClass::Get(statclass);
1044                                         for (uint16 j = 0; j < stclass->GetSpecCount(); j++) {
1045                                                 const StationSpec *statspec = stclass->GetSpec(j);
1046                                                 SetDParam(0, (statspec != NULL && statspec->name != 0) ? statspec->name : STR_STATION_CLASS_DFLT);
1047                                                 d = maxdim(d, GetStringBoundingBox(str));
1048                                         }
1049                                 }
1050                                 size->width = max(size->width, d.width + padding.width);
1051                                 break;
1052                         }
1053
1054                         case WID_BRAS_COVERAGE_TEXTS:
1055                                 size->height = this->coverage_height;
1056                                 break;
1057
1058                         case WID_BRAS_MATRIX:
1059                                 fill->height = 1;
1060                                 resize->height = 1;
1061                                 break;
1062                 }
1063         }
1064
1065         virtual void DrawWidget(const Rect &r, int widget) const
1066         {
1067                 DrawPixelInfo tmp_dpi;
1068
1069                 switch (GB(widget, 0, 16)) {
1070                         case WID_BRAS_PLATFORM_DIR_X:
1071                                 /* Set up a clipping area for the '/' station preview */
1072                                 if (FillDrawPixelInfo(&tmp_dpi, r.left, r.top, r.right - r.left + 1, r.bottom - r.top + 1)) {
1073                                         DrawPixelInfo *old_dpi = _cur_dpi;
1074                                         _cur_dpi = &tmp_dpi;
1075                                         if (!DrawStationTile(32, 28, _cur_railtype, AXIS_X, _railstation.station_class, _railstation.station_type)) {
1076                                                 StationPickerDrawSprite(32, 28, STATION_RAIL, _cur_railtype, INVALID_ROADTYPE, 2);
1077                                         }
1078                                         _cur_dpi = old_dpi;
1079                                 }
1080                                 break;
1081
1082                         case WID_BRAS_PLATFORM_DIR_Y:
1083                                 /* Set up a clipping area for the '\' station preview */
1084                                 if (FillDrawPixelInfo(&tmp_dpi, r.left, r.top, r.right - r.left + 1, r.bottom - r.top + 1)) {
1085                                         DrawPixelInfo *old_dpi = _cur_dpi;
1086                                         _cur_dpi = &tmp_dpi;
1087                                         if (!DrawStationTile(32, 28, _cur_railtype, AXIS_Y, _railstation.station_class, _railstation.station_type)) {
1088                                                 StationPickerDrawSprite(32, 28, STATION_RAIL, _cur_railtype, INVALID_ROADTYPE, 3);
1089                                         }
1090                                         _cur_dpi = old_dpi;
1091                                 }
1092                                 break;
1093
1094                         case WID_BRAS_NEWST_LIST: {
1095                                 uint statclass = 0;
1096                                 uint row = 0;
1097                                 for (uint i = 0; i < StationClass::GetClassCount(); i++) {
1098                                         if (i == STAT_CLASS_WAYP) continue;
1099                                         if (this->vscroll->IsVisible(statclass)) {
1100                                                 SetDParam(0, StationClass::Get((StationClassID)i)->name);
1101                                                 DrawString(r.left + WD_MATRIX_LEFT, r.right - WD_MATRIX_RIGHT, row * this->line_height + r.top + WD_MATRIX_TOP, STR_JUST_STRING,
1102                                                                 (StationClassID)i == _railstation.station_class ? TC_WHITE : TC_BLACK);
1103                                                 row++;
1104                                         }
1105                                         statclass++;
1106                                 }
1107                                 break;
1108                         }
1109
1110                         case WID_BRAS_IMAGE: {
1111                                 byte type = GB(widget, 16, 16);
1112                                 assert(type < _railstation.station_count);
1113                                 /* Check station availability callback */
1114                                 const StationSpec *statspec = StationClass::Get(_railstation.station_class)->GetSpec(type);
1115                                 if (!IsStationAvailable(statspec)) {
1116                                         GfxFillRect(r.left + 1, r.top + 1, r.right - 1, r.bottom - 1, PC_BLACK, FILLRECT_CHECKER);
1117                                 }
1118
1119                                 /* Set up a clipping area for the station preview. */
1120                                 if (FillDrawPixelInfo(&tmp_dpi, r.left, r.top, r.right - r.left + 1, r.bottom - r.top + 1)) {
1121                                         DrawPixelInfo *old_dpi = _cur_dpi;
1122                                         _cur_dpi = &tmp_dpi;
1123                                         if (!DrawStationTile(32, 28, _cur_railtype, _railstation.orientation, _railstation.station_class, type)) {
1124                                                 StationPickerDrawSprite(32, 28, STATION_RAIL, _cur_railtype, INVALID_ROADTYPE, 2 + _railstation.orientation);
1125                                         }
1126                                         _cur_dpi = old_dpi;
1127                                 }
1128                                 break;
1129                         }
1130                 }
1131         }
1132
1133         virtual void OnResize()
1134         {
1135                 if (this->vscroll != NULL) { // New stations available.
1136                         this->vscroll->SetCapacityFromWidget(this, WID_BRAS_NEWST_LIST);
1137                 }
1138         }
1139
1140         virtual void SetStringParameters(int widget) const
1141         {
1142                 if (widget == WID_BRAS_SHOW_NEWST_TYPE) {
1143                         const StationSpec *statspec = StationClass::Get(_railstation.station_class)->GetSpec(_railstation.station_type);
1144                         SetDParam(0, (statspec != NULL && statspec->name != 0) ? statspec->name : STR_STATION_CLASS_DFLT);
1145                 }
1146         }
1147
1148         virtual void OnClick(Point pt, int widget, int click_count)
1149         {
1150                 switch (GB(widget, 0, 16)) {
1151                         case WID_BRAS_PLATFORM_DIR_X:
1152                         case WID_BRAS_PLATFORM_DIR_Y:
1153                                 this->RaiseWidget(_railstation.orientation + WID_BRAS_PLATFORM_DIR_X);
1154                                 _railstation.orientation = (Axis)(widget - WID_BRAS_PLATFORM_DIR_X);
1155                                 this->LowerWidget(_railstation.orientation + WID_BRAS_PLATFORM_DIR_X);
1156                                 if (_settings_client.sound.click_beep) SndPlayFx(SND_15_BEEP);
1157                                 this->SetDirty();
1158                                 DeleteWindowById(WC_SELECT_STATION, 0);
1159                                 break;
1160
1161                         case WID_BRAS_PLATFORM_NUM_1:
1162                         case WID_BRAS_PLATFORM_NUM_2:
1163                         case WID_BRAS_PLATFORM_NUM_3:
1164                         case WID_BRAS_PLATFORM_NUM_4:
1165                         case WID_BRAS_PLATFORM_NUM_5:
1166                         case WID_BRAS_PLATFORM_NUM_6:
1167                         case WID_BRAS_PLATFORM_NUM_7: {
1168                                 this->RaiseWidget(_settings_client.gui.station_numtracks + WID_BRAS_PLATFORM_NUM_BEGIN);
1169                                 this->RaiseWidget(WID_BRAS_PLATFORM_DRAG_N_DROP);
1170
1171                                 _settings_client.gui.station_numtracks = widget - WID_BRAS_PLATFORM_NUM_BEGIN;
1172                                 _settings_client.gui.station_dragdrop = false;
1173
1174                                 _settings_client.gui.station_dragdrop = false;
1175
1176                                 const StationSpec *statspec = _railstation.newstations ? StationClass::Get(_railstation.station_class)->GetSpec(_railstation.station_type) : NULL;
1177                                 if (statspec != NULL && HasBit(statspec->disallowed_lengths, _settings_client.gui.station_platlength - 1)) {
1178                                         /* The previously selected number of platforms in invalid */
1179                                         for (uint i = 0; i < 7; i++) {
1180                                                 if (!HasBit(statspec->disallowed_lengths, i)) {
1181                                                         this->RaiseWidget(_settings_client.gui.station_platlength + WID_BRAS_PLATFORM_LEN_BEGIN);
1182                                                         _settings_client.gui.station_platlength = i + 1;
1183                                                         break;
1184                                                 }
1185                                         }
1186                                 }
1187
1188                                 this->LowerWidget(_settings_client.gui.station_numtracks + WID_BRAS_PLATFORM_NUM_BEGIN);
1189                                 this->LowerWidget(_settings_client.gui.station_platlength + WID_BRAS_PLATFORM_LEN_BEGIN);
1190                                 if (_settings_client.sound.click_beep) SndPlayFx(SND_15_BEEP);
1191                                 this->SetDirty();
1192                                 DeleteWindowById(WC_SELECT_STATION, 0);
1193                                 break;
1194                         }
1195
1196                         case WID_BRAS_PLATFORM_LEN_1:
1197                         case WID_BRAS_PLATFORM_LEN_2:
1198                         case WID_BRAS_PLATFORM_LEN_3:
1199                         case WID_BRAS_PLATFORM_LEN_4:
1200                         case WID_BRAS_PLATFORM_LEN_5:
1201                         case WID_BRAS_PLATFORM_LEN_6:
1202                         case WID_BRAS_PLATFORM_LEN_7: {
1203                                 this->RaiseWidget(_settings_client.gui.station_platlength + WID_BRAS_PLATFORM_LEN_BEGIN);
1204                                 this->RaiseWidget(WID_BRAS_PLATFORM_DRAG_N_DROP);
1205
1206                                 _settings_client.gui.station_platlength = widget - WID_BRAS_PLATFORM_LEN_BEGIN;
1207                                 _settings_client.gui.station_dragdrop = false;
1208
1209                                 _settings_client.gui.station_dragdrop = false;
1210
1211                                 const StationSpec *statspec = _railstation.newstations ? StationClass::Get(_railstation.station_class)->GetSpec(_railstation.station_type) : NULL;
1212                                 if (statspec != NULL && HasBit(statspec->disallowed_platforms, _settings_client.gui.station_numtracks - 1)) {
1213                                         /* The previously selected number of tracks in invalid */
1214                                         for (uint i = 0; i < 7; i++) {
1215                                                 if (!HasBit(statspec->disallowed_platforms, i)) {
1216                                                         this->RaiseWidget(_settings_client.gui.station_numtracks + WID_BRAS_PLATFORM_NUM_BEGIN);
1217                                                         _settings_client.gui.station_numtracks = i + 1;
1218                                                         break;
1219                                                 }
1220                                         }
1221                                 }
1222
1223                                 this->LowerWidget(_settings_client.gui.station_numtracks + WID_BRAS_PLATFORM_NUM_BEGIN);
1224                                 this->LowerWidget(_settings_client.gui.station_platlength + WID_BRAS_PLATFORM_LEN_BEGIN);
1225                                 if (_settings_client.sound.click_beep) SndPlayFx(SND_15_BEEP);
1226                                 this->SetDirty();
1227                                 DeleteWindowById(WC_SELECT_STATION, 0);
1228                                 break;
1229                         }
1230
1231                         case WID_BRAS_PLATFORM_DRAG_N_DROP: {
1232                                 _settings_client.gui.station_dragdrop ^= true;
1233
1234                                 this->ToggleWidgetLoweredState(WID_BRAS_PLATFORM_DRAG_N_DROP);
1235
1236                                 /* get the first allowed length/number of platforms */
1237                                 const StationSpec *statspec = _railstation.newstations ? StationClass::Get(_railstation.station_class)->GetSpec(_railstation.station_type) : NULL;
1238                                 if (statspec != NULL && HasBit(statspec->disallowed_lengths, _settings_client.gui.station_platlength - 1)) {
1239                                         for (uint i = 0; i < 7; i++) {
1240                                                 if (!HasBit(statspec->disallowed_lengths, i)) {
1241                                                         this->RaiseWidget(_settings_client.gui.station_platlength + WID_BRAS_PLATFORM_LEN_BEGIN);
1242                                                         _settings_client.gui.station_platlength = i + 1;
1243                                                         break;
1244                                                 }
1245                                         }
1246                                 }
1247                                 if (statspec != NULL && HasBit(statspec->disallowed_platforms, _settings_client.gui.station_numtracks - 1)) {
1248                                         for (uint i = 0; i < 7; i++) {
1249                                                 if (!HasBit(statspec->disallowed_platforms, i)) {
1250                                                         this->RaiseWidget(_settings_client.gui.station_numtracks + WID_BRAS_PLATFORM_NUM_BEGIN);
1251                                                         _settings_client.gui.station_numtracks = i + 1;
1252                                                         break;
1253                                                 }
1254                                         }
1255                                 }
1256
1257                                 this->SetWidgetLoweredState(_settings_client.gui.station_numtracks + WID_BRAS_PLATFORM_NUM_BEGIN, !_settings_client.gui.station_dragdrop);
1258                                 this->SetWidgetLoweredState(_settings_client.gui.station_platlength + WID_BRAS_PLATFORM_LEN_BEGIN, !_settings_client.gui.station_dragdrop);
1259                                 if (_settings_client.sound.click_beep) SndPlayFx(SND_15_BEEP);
1260                                 this->SetDirty();
1261                                 DeleteWindowById(WC_SELECT_STATION, 0);
1262                                 break;
1263                         }
1264
1265                         case WID_BRAS_HIGHLIGHT_OFF:
1266                         case WID_BRAS_HIGHLIGHT_ON:
1267                                 _settings_client.gui.station_show_coverage = (widget != WID_BRAS_HIGHLIGHT_OFF);
1268
1269                                 this->SetWidgetLoweredState(WID_BRAS_HIGHLIGHT_OFF, !_settings_client.gui.station_show_coverage);
1270                                 this->SetWidgetLoweredState(WID_BRAS_HIGHLIGHT_ON, _settings_client.gui.station_show_coverage);
1271                                 if (_settings_client.sound.click_beep) SndPlayFx(SND_15_BEEP);
1272                                 this->SetDirty();
1273                                 break;
1274
1275                         case WID_BRAS_NEWST_LIST: {
1276                                 int y = this->vscroll->GetScrolledRowFromWidget(pt.y, this, WID_BRAS_NEWST_LIST, 0, this->line_height);
1277                                 if (y >= (int)StationClass::GetClassCount()) return;
1278                                 for (uint i = 0; i < StationClass::GetClassCount(); i++) {
1279                                         if (i == STAT_CLASS_WAYP) continue;
1280                                         if (y == 0) {
1281                                                 if (_railstation.station_class != (StationClassID)i) {
1282                                                         _railstation.station_class = (StationClassID)i;
1283                                                         StationClass *stclass = StationClass::Get(_railstation.station_class);
1284                                                         _railstation.station_count = stclass->GetSpecCount();
1285                                                         _railstation.station_type  = min((int)_railstation.station_type, max(0, (int)_railstation.station_count - 1));
1286
1287                                                         this->CheckSelectedSize(stclass->GetSpec(_railstation.station_type));
1288
1289                                                         NWidgetMatrix *matrix = this->GetWidget<NWidgetMatrix>(WID_BRAS_MATRIX);
1290                                                         matrix->SetCount(_railstation.station_count);
1291                                                         matrix->SetClicked(_railstation.station_type);
1292                                                 }
1293                                                 if (_settings_client.sound.click_beep) SndPlayFx(SND_15_BEEP);
1294                                                 this->SetDirty();
1295                                                 DeleteWindowById(WC_SELECT_STATION, 0);
1296                                                 break;
1297                                         }
1298                                         y--;
1299                                 }
1300                                 break;
1301                         }
1302
1303                         case WID_BRAS_IMAGE: {
1304                                 int y = GB(widget, 16, 16);
1305                                 if (y >= _railstation.station_count) return;
1306
1307                                 /* Check station availability callback */
1308                                 const StationSpec *statspec = StationClass::Get(_railstation.station_class)->GetSpec(y);
1309                                 if (!IsStationAvailable(statspec)) return;
1310
1311                                 _railstation.station_type = y;
1312
1313                                 this->CheckSelectedSize(statspec);
1314                                 this->GetWidget<NWidgetMatrix>(WID_BRAS_MATRIX)->SetClicked(_railstation.station_type);
1315
1316                                 if (_settings_client.sound.click_beep) SndPlayFx(SND_15_BEEP);
1317                                 this->SetDirty();
1318                                 DeleteWindowById(WC_SELECT_STATION, 0);
1319                                 break;
1320                         }
1321                 }
1322         }
1323
1324         virtual void OnTick()
1325         {
1326                 CheckRedrawStationCoverage(this);
1327         }
1328 };
1329
1330 static const NWidgetPart _nested_station_builder_widgets[] = {
1331         NWidget(NWID_HORIZONTAL),
1332                 NWidget(WWT_CLOSEBOX, COLOUR_DARK_GREEN),
1333                 NWidget(WWT_CAPTION, COLOUR_DARK_GREEN), SetDataTip(STR_STATION_BUILD_RAIL_CAPTION, STR_TOOLTIP_WINDOW_TITLE_DRAG_THIS),
1334                 NWidget(NWID_SELECTION, INVALID_COLOUR, WID_BRAS_SHOW_NEWST_DEFSIZE),
1335                         NWidget(WWT_DEFSIZEBOX, COLOUR_DARK_GREEN),
1336                 EndContainer(),
1337         EndContainer(),
1338         NWidget(WWT_PANEL, COLOUR_DARK_GREEN),
1339                 NWidget(NWID_HORIZONTAL),
1340                         NWidget(NWID_VERTICAL),
1341                                 NWidget(NWID_SELECTION, INVALID_COLOUR, WID_BRAS_SHOW_NEWST_ADDITIONS),
1342                                         NWidget(NWID_HORIZONTAL), SetPIP(7, 0, 7), SetPadding(2, 0, 1, 0),
1343                                                 NWidget(WWT_MATRIX, COLOUR_GREY, WID_BRAS_NEWST_LIST), SetMinimalSize(122, 71), SetFill(1, 0),
1344                                                                 SetMatrixDataTip(1, 0, STR_STATION_BUILD_STATION_CLASS_TOOLTIP), SetScrollbar(WID_BRAS_NEWST_SCROLL),
1345                                                 NWidget(NWID_VSCROLLBAR, COLOUR_GREY, WID_BRAS_NEWST_SCROLL),
1346                                         EndContainer(),
1347                                 EndContainer(),
1348                                 NWidget(WWT_LABEL, COLOUR_DARK_GREEN), SetMinimalSize(144, 11), SetDataTip(STR_STATION_BUILD_ORIENTATION, STR_NULL), SetPadding(1, 2, 0, 2),
1349                                 NWidget(NWID_HORIZONTAL),
1350                                         NWidget(NWID_SPACER), SetMinimalSize(7, 0), SetFill(1, 0),
1351                                         NWidget(WWT_PANEL, COLOUR_GREY, WID_BRAS_PLATFORM_DIR_X), SetMinimalSize(66, 60), SetFill(0, 0), SetDataTip(0x0, STR_STATION_BUILD_RAILROAD_ORIENTATION_TOOLTIP), EndContainer(),
1352                                         NWidget(NWID_SPACER), SetMinimalSize(2, 0), SetFill(1, 0),
1353                                         NWidget(WWT_PANEL, COLOUR_GREY, WID_BRAS_PLATFORM_DIR_Y), SetMinimalSize(66, 60), SetFill(0, 0), SetDataTip(0x0, STR_STATION_BUILD_RAILROAD_ORIENTATION_TOOLTIP), EndContainer(),
1354                                         NWidget(NWID_SPACER), SetMinimalSize(7, 0), SetFill(1, 0),
1355                                 EndContainer(),
1356                                 NWidget(WWT_LABEL, COLOUR_DARK_GREEN, WID_BRAS_SHOW_NEWST_TYPE), SetMinimalSize(144, 11), SetDataTip(STR_ORANGE_STRING, STR_NULL), SetPadding(1, 2, 4, 2),
1357                                 NWidget(WWT_LABEL, COLOUR_DARK_GREEN), SetMinimalSize(144, 11), SetDataTip(STR_STATION_BUILD_NUMBER_OF_TRACKS, STR_NULL), SetPadding(0, 2, 0, 2),
1358                                 NWidget(NWID_HORIZONTAL),
1359                                         NWidget(NWID_SPACER), SetFill(1, 0),
1360                                         NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_BRAS_PLATFORM_NUM_1), SetMinimalSize(15, 12), SetDataTip(STR_BLACK_1, STR_STATION_BUILD_NUMBER_OF_TRACKS_TOOLTIP),
1361                                         NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_BRAS_PLATFORM_NUM_2), SetMinimalSize(15, 12), SetDataTip(STR_BLACK_2, STR_STATION_BUILD_NUMBER_OF_TRACKS_TOOLTIP),
1362                                         NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_BRAS_PLATFORM_NUM_3), SetMinimalSize(15, 12), SetDataTip(STR_BLACK_3, STR_STATION_BUILD_NUMBER_OF_TRACKS_TOOLTIP),
1363                                         NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_BRAS_PLATFORM_NUM_4), SetMinimalSize(15, 12), SetDataTip(STR_BLACK_4, STR_STATION_BUILD_NUMBER_OF_TRACKS_TOOLTIP),
1364                                         NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_BRAS_PLATFORM_NUM_5), SetMinimalSize(15, 12), SetDataTip(STR_BLACK_5, STR_STATION_BUILD_NUMBER_OF_TRACKS_TOOLTIP),
1365                                         NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_BRAS_PLATFORM_NUM_6), SetMinimalSize(15, 12), SetDataTip(STR_BLACK_6, STR_STATION_BUILD_NUMBER_OF_TRACKS_TOOLTIP),
1366                                         NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_BRAS_PLATFORM_NUM_7), SetMinimalSize(15, 12), SetDataTip(STR_BLACK_7, STR_STATION_BUILD_NUMBER_OF_TRACKS_TOOLTIP),
1367                                         NWidget(NWID_SPACER), SetFill(1, 0),
1368                                 EndContainer(),
1369                                 NWidget(WWT_LABEL, COLOUR_DARK_GREEN), SetMinimalSize(144, 11), SetDataTip(STR_STATION_BUILD_PLATFORM_LENGTH, STR_NULL), SetPadding(2, 2, 0, 2),
1370                                 NWidget(NWID_HORIZONTAL),
1371                                         NWidget(NWID_SPACER), SetFill(1, 0),
1372                                         NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_BRAS_PLATFORM_LEN_1), SetMinimalSize(15, 12), SetDataTip(STR_BLACK_1, STR_STATION_BUILD_PLATFORM_LENGTH_TOOLTIP),
1373                                         NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_BRAS_PLATFORM_LEN_2), SetMinimalSize(15, 12), SetDataTip(STR_BLACK_2, STR_STATION_BUILD_PLATFORM_LENGTH_TOOLTIP),
1374                                         NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_BRAS_PLATFORM_LEN_3), SetMinimalSize(15, 12), SetDataTip(STR_BLACK_3, STR_STATION_BUILD_PLATFORM_LENGTH_TOOLTIP),
1375                                         NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_BRAS_PLATFORM_LEN_4), SetMinimalSize(15, 12), SetDataTip(STR_BLACK_4, STR_STATION_BUILD_PLATFORM_LENGTH_TOOLTIP),
1376                                         NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_BRAS_PLATFORM_LEN_5), SetMinimalSize(15, 12), SetDataTip(STR_BLACK_5, STR_STATION_BUILD_PLATFORM_LENGTH_TOOLTIP),
1377                                         NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_BRAS_PLATFORM_LEN_6), SetMinimalSize(15, 12), SetDataTip(STR_BLACK_6, STR_STATION_BUILD_PLATFORM_LENGTH_TOOLTIP),
1378                                         NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_BRAS_PLATFORM_LEN_7), SetMinimalSize(15, 12), SetDataTip(STR_BLACK_7, STR_STATION_BUILD_PLATFORM_LENGTH_TOOLTIP),
1379                                         NWidget(NWID_SPACER), SetFill(1, 0),
1380                                 EndContainer(),
1381                                 NWidget(NWID_SPACER), SetMinimalSize(0, 2),
1382                                 NWidget(NWID_HORIZONTAL),
1383                                         NWidget(NWID_SPACER), SetMinimalSize(2, 0), SetFill(1, 0),
1384                                         NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_BRAS_PLATFORM_DRAG_N_DROP), SetMinimalSize(75, 12), SetDataTip(STR_STATION_BUILD_DRAG_DROP, STR_STATION_BUILD_DRAG_DROP_TOOLTIP),
1385                                         NWidget(NWID_SPACER), SetMinimalSize(2, 0), SetFill(1, 0),
1386                                 EndContainer(),
1387                                 NWidget(WWT_LABEL, COLOUR_DARK_GREEN), SetMinimalSize(144, 11), SetDataTip(STR_STATION_BUILD_COVERAGE_AREA_TITLE, STR_NULL), SetPadding(3, 2, 0, 2),
1388                                 NWidget(NWID_HORIZONTAL),
1389                                         NWidget(NWID_SPACER), SetMinimalSize(2, 0), SetFill(1, 0),
1390                                         NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_BRAS_HIGHLIGHT_OFF), SetMinimalSize(60, 12),
1391                                                                                                 SetDataTip(STR_STATION_BUILD_COVERAGE_OFF, STR_STATION_BUILD_COVERAGE_AREA_OFF_TOOLTIP),
1392                                         NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_BRAS_HIGHLIGHT_ON), SetMinimalSize(60, 12),
1393                                                                                                 SetDataTip(STR_STATION_BUILD_COVERAGE_ON, STR_STATION_BUILD_COVERAGE_AREA_ON_TOOLTIP),
1394                                         NWidget(NWID_SPACER), SetMinimalSize(2, 0), SetFill(1, 0),
1395                                 EndContainer(),
1396                         EndContainer(),
1397                         NWidget(NWID_SELECTION, INVALID_COLOUR, WID_BRAS_SHOW_NEWST_MATRIX),
1398                                 /* We need an additional background for the matrix, as the matrix cannot handle the scrollbar due to not being an NWidgetCore. */
1399                                 NWidget(WWT_PANEL, COLOUR_DARK_GREEN), SetScrollbar(WID_BRAS_MATRIX_SCROLL),
1400                                         NWidget(NWID_HORIZONTAL),
1401                                                 NWidget(NWID_MATRIX, COLOUR_DARK_GREEN, WID_BRAS_MATRIX), SetScrollbar(WID_BRAS_MATRIX_SCROLL), SetPIP(0, 2, 0), SetPadding(2, 0, 0, 0),
1402                                                         NWidget(WWT_PANEL, COLOUR_DARK_GREEN, WID_BRAS_IMAGE), SetMinimalSize(66, 60),
1403                                                                         SetFill(0, 0), SetResize(0, 0), SetDataTip(0x0, STR_STATION_BUILD_STATION_TYPE_TOOLTIP), SetScrollbar(WID_BRAS_MATRIX_SCROLL),
1404                                                         EndContainer(),
1405                                                 EndContainer(),
1406                                                 NWidget(NWID_VSCROLLBAR, COLOUR_DARK_GREEN, WID_BRAS_MATRIX_SCROLL),
1407                                         EndContainer(),
1408                                 EndContainer(),
1409                         EndContainer(),
1410                 EndContainer(),
1411                 NWidget(NWID_HORIZONTAL),
1412                         NWidget(WWT_EMPTY, INVALID_COLOUR, WID_BRAS_COVERAGE_TEXTS), SetFill(1, 1), SetResize(1, 0),
1413                         NWidget(NWID_SELECTION, INVALID_COLOUR, WID_BRAS_SHOW_NEWST_RESIZE),
1414                                 NWidget(NWID_VERTICAL),
1415                                         NWidget(WWT_PANEL, COLOUR_DARK_GREEN), SetFill(0, 1), EndContainer(),
1416                                         NWidget(WWT_RESIZEBOX, COLOUR_DARK_GREEN),
1417                                 EndContainer(),
1418                         EndContainer(),
1419                 EndContainer(),
1420         EndContainer(),
1421 };
1422
1423 /** High level window description of the station-build window (default & newGRF) */
1424 static WindowDesc _station_builder_desc(
1425         WDP_AUTO, "build_station_rail", 350, 0,
1426         WC_BUILD_STATION, WC_BUILD_TOOLBAR,
1427         WDF_CONSTRUCTION,
1428         _nested_station_builder_widgets, lengthof(_nested_station_builder_widgets)
1429 );
1430
1431 /** Open station build window */
1432 static void ShowStationBuilder(Window *parent)
1433 {
1434         bool newstations = StationClass::GetClassCount() > 2 || StationClass::Get(STAT_CLASS_DFLT)->GetSpecCount() != 1;
1435         new BuildRailStationWindow(&_station_builder_desc, parent, newstations);
1436 }
1437
1438 struct BuildSignalWindow : public PickerWindowBase {
1439 private:
1440         Dimension sig_sprite_size;     ///< Maximum size of signal GUI sprites.
1441         int sig_sprite_bottom_offset;  ///< Maximum extent of signal GUI sprite from reference point towards bottom.
1442
1443         /**
1444          * Draw dynamic a signal-sprite in a button in the signal GUI
1445          * Draw the sprite +1px to the right and down if the button is lowered
1446          *
1447          * @param widget_index index of this widget in the window
1448          * @param image        the sprite to draw
1449          */
1450         void DrawSignalSprite(byte widget_index, SpriteID image) const
1451         {
1452                 Point offset;
1453                 Dimension sprite_size = GetSpriteSize(image, &offset);
1454                 const NWidgetBase *widget = this->GetWidget<NWidgetBase>(widget_index);
1455                 int x = widget->pos_x - offset.x +
1456                                 (widget->current_x - sprite_size.width + offset.x) / 2;  // centered
1457                 int y = widget->pos_y - sig_sprite_bottom_offset + WD_IMGBTN_TOP +
1458                                 (widget->current_y - WD_IMGBTN_TOP - WD_IMGBTN_BOTTOM + sig_sprite_size.height) / 2; // aligned to bottom
1459
1460                 DrawSprite(image, PAL_NONE,
1461                                 x + this->IsWidgetLowered(widget_index),
1462                                 y + this->IsWidgetLowered(widget_index));
1463         }
1464
1465 public:
1466         BuildSignalWindow(WindowDesc *desc, Window *parent) : PickerWindowBase(desc, parent)
1467         {
1468                 this->InitNested(TRANSPORT_RAIL);
1469                 this->OnInvalidateData();
1470         }
1471
1472         ~BuildSignalWindow()
1473         {
1474                 _convert_signal_button = false;
1475         }
1476
1477         virtual void OnInit()
1478         {
1479                 /* Calculate maximum signal sprite size. */
1480                 this->sig_sprite_size.width = 0;
1481                 this->sig_sprite_size.height = 0;
1482                 this->sig_sprite_bottom_offset = 0;
1483                 const RailtypeInfo *rti = GetRailTypeInfo(_cur_railtype);
1484                 for (uint type = SIGTYPE_NORMAL; type < SIGTYPE_END; type++) {
1485                         for (uint variant = SIG_ELECTRIC; variant <= SIG_SEMAPHORE; variant++) {
1486                                 for (uint lowered = 0; lowered < 2; lowered++) {
1487                                         Point offset;
1488                                         Dimension sprite_size = GetSpriteSize(rti->gui_sprites.signals[type][variant][lowered], &offset);
1489                                         this->sig_sprite_bottom_offset = max<int>(this->sig_sprite_bottom_offset, sprite_size.height);
1490                                         this->sig_sprite_size.width = max<int>(this->sig_sprite_size.width, sprite_size.width - offset.x);
1491                                         this->sig_sprite_size.height = max<int>(this->sig_sprite_size.height, sprite_size.height - offset.y);
1492                                 }
1493                         }
1494                 }
1495         }
1496
1497         virtual void UpdateWidgetSize(int widget, Dimension *size, const Dimension &padding, Dimension *fill, Dimension *resize)
1498         {
1499                 if (widget == WID_BS_DRAG_SIGNALS_DENSITY_LABEL) {
1500                         /* Two digits for signals density. */
1501                         size->width = max(size->width, 2 * GetDigitWidth() + padding.width + WD_FRAMERECT_LEFT + WD_FRAMERECT_RIGHT);
1502                 } else if (IsInsideMM(widget, WID_BS_SEMAPHORE_NORM, WID_BS_ELECTRIC_PBS_OWAY + 1)) {
1503                         size->width = max(size->width, this->sig_sprite_size.width + WD_IMGBTN_LEFT + WD_IMGBTN_RIGHT);
1504                         size->height = max(size->height, this->sig_sprite_size.height + WD_IMGBTN_TOP + WD_IMGBTN_BOTTOM);
1505                 }
1506         }
1507
1508         virtual void SetStringParameters(int widget) const
1509         {
1510                 switch (widget) {
1511                         case WID_BS_DRAG_SIGNALS_DENSITY_LABEL:
1512                                 SetDParam(0, _settings_client.gui.drag_signals_density);
1513                                 break;
1514                 }
1515         }
1516
1517         virtual void DrawWidget(const Rect &r, int widget) const
1518         {
1519                 if (IsInsideMM(widget, WID_BS_SEMAPHORE_NORM, WID_BS_ELECTRIC_PBS_OWAY + 1)) {
1520                         /* Extract signal from widget number. */
1521                         int type = (widget - WID_BS_SEMAPHORE_NORM) % SIGTYPE_END;
1522                         int var = SIG_SEMAPHORE - (widget - WID_BS_SEMAPHORE_NORM) / SIGTYPE_END; // SignalVariant order is reversed compared to the widgets.
1523                         SpriteID sprite = GetRailTypeInfo(_cur_railtype)->gui_sprites.signals[type][var][this->IsWidgetLowered(widget)];
1524
1525                         this->DrawSignalSprite(widget, sprite);
1526                 }
1527         }
1528
1529         virtual void OnClick(Point pt, int widget, int click_count)
1530         {
1531                 switch (widget) {
1532                         case WID_BS_SEMAPHORE_NORM:
1533                         case WID_BS_SEMAPHORE_ENTRY:
1534                         case WID_BS_SEMAPHORE_EXIT:
1535                         case WID_BS_SEMAPHORE_COMBO:
1536                         case WID_BS_SEMAPHORE_PBS:
1537                         case WID_BS_SEMAPHORE_PBS_OWAY:
1538                         case WID_BS_ELECTRIC_NORM:
1539                         case WID_BS_ELECTRIC_ENTRY:
1540                         case WID_BS_ELECTRIC_EXIT:
1541                         case WID_BS_ELECTRIC_COMBO:
1542                         case WID_BS_ELECTRIC_PBS:
1543                         case WID_BS_ELECTRIC_PBS_OWAY:
1544                                 this->RaiseWidget((_cur_signal_variant == SIG_ELECTRIC ? WID_BS_ELECTRIC_NORM : WID_BS_SEMAPHORE_NORM) + _cur_signal_type);
1545
1546                                 _cur_signal_type = (SignalType)((uint)((widget - WID_BS_SEMAPHORE_NORM) % (SIGTYPE_LAST + 1)));
1547                                 _cur_signal_variant = widget >= WID_BS_ELECTRIC_NORM ? SIG_ELECTRIC : SIG_SEMAPHORE;
1548
1549                                 /* If 'remove' button of rail build toolbar is active, disable it. */
1550                                 if (_remove_button_clicked) {
1551                                         Window *w = FindWindowById(WC_BUILD_TOOLBAR, TRANSPORT_RAIL);
1552                                         if (w != NULL) ToggleRailButton_Remove(w);
1553                                 }
1554
1555                                 break;
1556
1557                         case WID_BS_CONVERT:
1558                                 _convert_signal_button = !_convert_signal_button;
1559                                 break;
1560
1561                         case WID_BS_DRAG_SIGNALS_DENSITY_DECREASE:
1562                                 if (_settings_client.gui.drag_signals_density > 1) {
1563                                         _settings_client.gui.drag_signals_density--;
1564                                         SetWindowDirty(WC_GAME_OPTIONS, WN_GAME_OPTIONS_GAME_SETTINGS);
1565                                 }
1566                                 break;
1567
1568                         case WID_BS_DRAG_SIGNALS_DENSITY_INCREASE:
1569                                 if (_settings_client.gui.drag_signals_density < 20) {
1570                                         _settings_client.gui.drag_signals_density++;
1571                                         SetWindowDirty(WC_GAME_OPTIONS, WN_GAME_OPTIONS_GAME_SETTINGS);
1572                                 }
1573                                 break;
1574
1575                         default: break;
1576                 }
1577
1578                 this->InvalidateData();
1579         }
1580
1581         /**
1582          * Some data on this window has become invalid.
1583          * @param data Information about the changed data.
1584          * @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.
1585          */
1586         virtual void OnInvalidateData(int data = 0, bool gui_scope = true)
1587         {
1588                 if (!gui_scope) return;
1589                 this->LowerWidget((_cur_signal_variant == SIG_ELECTRIC ? WID_BS_ELECTRIC_NORM : WID_BS_SEMAPHORE_NORM) + _cur_signal_type);
1590
1591                 this->SetWidgetLoweredState(WID_BS_CONVERT, _convert_signal_button);
1592
1593                 this->SetWidgetDisabledState(WID_BS_DRAG_SIGNALS_DENSITY_DECREASE, _settings_client.gui.drag_signals_density == 1);
1594                 this->SetWidgetDisabledState(WID_BS_DRAG_SIGNALS_DENSITY_INCREASE, _settings_client.gui.drag_signals_density == 20);
1595         }
1596 };
1597
1598 /** Nested widget definition of the build signal window */
1599 static const NWidgetPart _nested_signal_builder_widgets[] = {
1600         NWidget(NWID_HORIZONTAL),
1601                 NWidget(WWT_CLOSEBOX, COLOUR_DARK_GREEN),
1602                 NWidget(WWT_CAPTION, COLOUR_DARK_GREEN), SetDataTip(STR_BUILD_SIGNAL_CAPTION, STR_TOOLTIP_WINDOW_TITLE_DRAG_THIS),
1603         EndContainer(),
1604         NWidget(NWID_VERTICAL, NC_EQUALSIZE),
1605                 NWidget(NWID_HORIZONTAL, NC_EQUALSIZE),
1606                         NWidget(WWT_PANEL, COLOUR_DARK_GREEN, WID_BS_SEMAPHORE_NORM), SetDataTip(STR_NULL, STR_BUILD_SIGNAL_SEMAPHORE_NORM_TOOLTIP), EndContainer(), SetFill(1, 1),
1607                         NWidget(WWT_PANEL, COLOUR_DARK_GREEN, WID_BS_SEMAPHORE_ENTRY), SetDataTip(STR_NULL, STR_BUILD_SIGNAL_SEMAPHORE_ENTRY_TOOLTIP), EndContainer(), SetFill(1, 1),
1608                         NWidget(WWT_PANEL, COLOUR_DARK_GREEN, WID_BS_SEMAPHORE_EXIT), SetDataTip(STR_NULL, STR_BUILD_SIGNAL_SEMAPHORE_EXIT_TOOLTIP), EndContainer(), SetFill(1, 1),
1609                         NWidget(WWT_PANEL, COLOUR_DARK_GREEN, WID_BS_SEMAPHORE_COMBO), SetDataTip(STR_NULL, STR_BUILD_SIGNAL_SEMAPHORE_COMBO_TOOLTIP), EndContainer(), SetFill(1, 1),
1610                         NWidget(WWT_PANEL, COLOUR_DARK_GREEN, WID_BS_SEMAPHORE_PBS), SetDataTip(STR_NULL, STR_BUILD_SIGNAL_SEMAPHORE_PBS_TOOLTIP), EndContainer(), SetFill(1, 1),
1611                         NWidget(WWT_PANEL, COLOUR_DARK_GREEN, WID_BS_SEMAPHORE_PBS_OWAY), SetDataTip(STR_NULL, STR_BUILD_SIGNAL_SEMAPHORE_PBS_OWAY_TOOLTIP), EndContainer(), SetFill(1, 1),
1612                         NWidget(WWT_IMGBTN, COLOUR_DARK_GREEN, WID_BS_CONVERT), SetDataTip(SPR_IMG_SIGNAL_CONVERT, STR_BUILD_SIGNAL_CONVERT_TOOLTIP), SetFill(1, 1),
1613                 EndContainer(),
1614                 NWidget(NWID_HORIZONTAL, NC_EQUALSIZE),
1615                         NWidget(WWT_PANEL, COLOUR_DARK_GREEN, WID_BS_ELECTRIC_NORM), SetDataTip(STR_NULL, STR_BUILD_SIGNAL_ELECTRIC_NORM_TOOLTIP), EndContainer(), SetFill(1, 1),
1616                         NWidget(WWT_PANEL, COLOUR_DARK_GREEN, WID_BS_ELECTRIC_ENTRY), SetDataTip(STR_NULL, STR_BUILD_SIGNAL_ELECTRIC_ENTRY_TOOLTIP), EndContainer(), SetFill(1, 1),
1617                         NWidget(WWT_PANEL, COLOUR_DARK_GREEN, WID_BS_ELECTRIC_EXIT), SetDataTip(STR_NULL, STR_BUILD_SIGNAL_ELECTRIC_EXIT_TOOLTIP), EndContainer(), SetFill(1, 1),
1618                         NWidget(WWT_PANEL, COLOUR_DARK_GREEN, WID_BS_ELECTRIC_COMBO), SetDataTip(STR_NULL, STR_BUILD_SIGNAL_ELECTRIC_COMBO_TOOLTIP), EndContainer(), SetFill(1, 1),
1619                         NWidget(WWT_PANEL, COLOUR_DARK_GREEN, WID_BS_ELECTRIC_PBS), SetDataTip(STR_NULL, STR_BUILD_SIGNAL_ELECTRIC_PBS_TOOLTIP), EndContainer(), SetFill(1, 1),
1620                         NWidget(WWT_PANEL, COLOUR_DARK_GREEN, WID_BS_ELECTRIC_PBS_OWAY), SetDataTip(STR_NULL, STR_BUILD_SIGNAL_ELECTRIC_PBS_OWAY_TOOLTIP), EndContainer(), SetFill(1, 1),
1621                         NWidget(WWT_PANEL, COLOUR_DARK_GREEN), SetDataTip(STR_NULL, STR_BUILD_SIGNAL_DRAG_SIGNALS_DENSITY_TOOLTIP), SetFill(1, 1),
1622                                 NWidget(WWT_LABEL, COLOUR_DARK_GREEN, WID_BS_DRAG_SIGNALS_DENSITY_LABEL), SetDataTip(STR_ORANGE_INT, STR_BUILD_SIGNAL_DRAG_SIGNALS_DENSITY_TOOLTIP), SetFill(1, 1),
1623                                 NWidget(NWID_HORIZONTAL), SetPIP(2, 0, 2),
1624                                         NWidget(NWID_SPACER), SetFill(1, 0),
1625                                         NWidget(WWT_PUSHARROWBTN, COLOUR_GREY, WID_BS_DRAG_SIGNALS_DENSITY_DECREASE), SetMinimalSize(9, 12), SetDataTip(AWV_DECREASE, STR_BUILD_SIGNAL_DRAG_SIGNALS_DENSITY_DECREASE_TOOLTIP),
1626                                         NWidget(WWT_PUSHARROWBTN, COLOUR_GREY, WID_BS_DRAG_SIGNALS_DENSITY_INCREASE), SetMinimalSize(9, 12), SetDataTip(AWV_INCREASE, STR_BUILD_SIGNAL_DRAG_SIGNALS_DENSITY_INCREASE_TOOLTIP),
1627                                         NWidget(NWID_SPACER), SetFill(1, 0),
1628                                 EndContainer(),
1629                                 NWidget(NWID_SPACER), SetMinimalSize(0, 2), SetFill(1, 0),
1630                         EndContainer(),
1631                 EndContainer(),
1632         EndContainer(),
1633 };
1634
1635 /** Signal selection window description */
1636 static WindowDesc _signal_builder_desc(
1637         WDP_AUTO, "build_signal", 0, 0,
1638         WC_BUILD_SIGNAL, WC_BUILD_TOOLBAR,
1639         WDF_CONSTRUCTION,
1640         _nested_signal_builder_widgets, lengthof(_nested_signal_builder_widgets)
1641 );
1642
1643 /**
1644  * Open the signal selection window
1645  */
1646 static void ShowSignalBuilder(Window *parent)
1647 {
1648         new BuildSignalWindow(&_signal_builder_desc, parent);
1649 }
1650
1651 struct BuildRailDepotWindow : public PickerWindowBase {
1652         BuildRailDepotWindow(WindowDesc *desc, Window *parent) : PickerWindowBase(desc, parent)
1653         {
1654                 this->InitNested(TRANSPORT_RAIL);
1655                 this->LowerWidget(_build_depot_direction + WID_BRAD_DEPOT_NE);
1656         }
1657
1658         virtual void DrawWidget(const Rect &r, int widget) const
1659         {
1660                 if (!IsInsideMM(widget, WID_BRAD_DEPOT_NE, WID_BRAD_DEPOT_NW + 1)) return;
1661
1662                 DrawTrainDepotSprite(r.left - 1, r.top, widget - WID_BRAD_DEPOT_NE + DIAGDIR_NE, _cur_railtype);
1663         }
1664
1665         virtual void OnClick(Point pt, int widget, int click_count)
1666         {
1667                 switch (widget) {
1668                         case WID_BRAD_DEPOT_NE:
1669                         case WID_BRAD_DEPOT_SE:
1670                         case WID_BRAD_DEPOT_SW:
1671                         case WID_BRAD_DEPOT_NW:
1672                                 this->RaiseWidget(_build_depot_direction + WID_BRAD_DEPOT_NE);
1673                                 _build_depot_direction = (DiagDirection)(widget - WID_BRAD_DEPOT_NE);
1674                                 this->LowerWidget(_build_depot_direction + WID_BRAD_DEPOT_NE);
1675                                 if (_settings_client.sound.click_beep) SndPlayFx(SND_15_BEEP);
1676                                 this->SetDirty();
1677                                 break;
1678                 }
1679         }
1680 };
1681
1682 /** Nested widget definition of the build rail depot window */
1683 static const NWidgetPart _nested_build_depot_widgets[] = {
1684         NWidget(NWID_HORIZONTAL),
1685                 NWidget(WWT_CLOSEBOX, COLOUR_DARK_GREEN),
1686                 NWidget(WWT_CAPTION, COLOUR_DARK_GREEN), SetDataTip(STR_BUILD_DEPOT_TRAIN_ORIENTATION_CAPTION, STR_TOOLTIP_WINDOW_TITLE_DRAG_THIS),
1687         EndContainer(),
1688         NWidget(WWT_PANEL, COLOUR_DARK_GREEN),
1689                 NWidget(NWID_SPACER), SetMinimalSize(0, 3),
1690                 NWidget(NWID_HORIZONTAL_LTR),
1691                         NWidget(NWID_SPACER), SetMinimalSize(3, 0), SetFill(1, 0),
1692                         NWidget(NWID_VERTICAL),
1693                                 NWidget(WWT_PANEL, COLOUR_GREY, WID_BRAD_DEPOT_NW), SetMinimalSize(66, 50), SetDataTip(0x0, STR_BUILD_DEPOT_TRAIN_ORIENTATION_TOOLTIP),
1694                                 EndContainer(),
1695                                 NWidget(NWID_SPACER), SetMinimalSize(0, 2),
1696                                 NWidget(WWT_PANEL, COLOUR_GREY, WID_BRAD_DEPOT_SW), SetMinimalSize(66, 50), SetDataTip(0x0, STR_BUILD_DEPOT_TRAIN_ORIENTATION_TOOLTIP),
1697                                 EndContainer(),
1698                         EndContainer(),
1699                         NWidget(NWID_SPACER), SetMinimalSize(2, 0),
1700                         NWidget(NWID_VERTICAL),
1701                                 NWidget(WWT_PANEL, COLOUR_GREY, WID_BRAD_DEPOT_NE), SetMinimalSize(66, 50), SetDataTip(0x0, STR_BUILD_DEPOT_TRAIN_ORIENTATION_TOOLTIP),
1702                                 EndContainer(),
1703                                 NWidget(NWID_SPACER), SetMinimalSize(0, 2),
1704                                 NWidget(WWT_PANEL, COLOUR_GREY, WID_BRAD_DEPOT_SE), SetMinimalSize(66, 50), SetDataTip(0x0, STR_BUILD_DEPOT_TRAIN_ORIENTATION_TOOLTIP),
1705                                 EndContainer(),
1706                         EndContainer(),
1707                         NWidget(NWID_SPACER), SetMinimalSize(3, 0), SetFill(1, 0),
1708                 EndContainer(),
1709                 NWidget(NWID_SPACER), SetMinimalSize(0, 3),
1710         EndContainer(),
1711 };
1712
1713 static WindowDesc _build_depot_desc(
1714         WDP_AUTO, NULL, 0, 0,
1715         WC_BUILD_DEPOT, WC_BUILD_TOOLBAR,
1716         WDF_CONSTRUCTION,
1717         _nested_build_depot_widgets, lengthof(_nested_build_depot_widgets)
1718 );
1719
1720 static void ShowBuildTrainDepotPicker(Window *parent)
1721 {
1722         new BuildRailDepotWindow(&_build_depot_desc, parent);
1723 }
1724
1725 struct BuildRailWaypointWindow : PickerWindowBase {
1726         BuildRailWaypointWindow(WindowDesc *desc, Window *parent) : PickerWindowBase(desc, parent)
1727         {
1728                 this->CreateNestedTree();
1729
1730                 NWidgetMatrix *matrix = this->GetWidget<NWidgetMatrix>(WID_BRW_WAYPOINT_MATRIX);
1731                 matrix->SetScrollbar(this->GetScrollbar(WID_BRW_SCROLL));
1732
1733                 this->FinishInitNested(TRANSPORT_RAIL);
1734
1735                 matrix->SetCount(_waypoint_count);
1736                 matrix->SetClicked(_cur_waypoint_type);
1737         }
1738
1739         virtual void UpdateWidgetSize(int widget, Dimension *size, const Dimension &padding, Dimension *fill, Dimension *resize)
1740         {
1741                 switch (widget) {
1742                         case WID_BRW_WAYPOINT_MATRIX:
1743                                 /* Three blobs high and wide. */
1744                                 size->width  += resize->width  * 2;
1745                                 size->height += resize->height * 2;
1746
1747                                 /* Resizing in X direction only at blob size, but at pixel level in Y. */
1748                                 resize->height = 1;
1749                                 break;
1750                 }
1751         }
1752
1753         virtual void DrawWidget(const Rect &r, int widget) const
1754         {
1755                 switch (GB(widget, 0, 16)) {
1756                         case WID_BRW_WAYPOINT: {
1757                                 byte type = GB(widget, 16, 16);
1758                                 const StationSpec *statspec = StationClass::Get(STAT_CLASS_WAYP)->GetSpec(type);
1759                                 DrawWaypointSprite(r.left + TILE_PIXELS, r.bottom - TILE_PIXELS, type, _cur_railtype);
1760
1761                                 if (!IsStationAvailable(statspec)) {
1762                                         GfxFillRect(r.left + 1, r.top + 1, r.right - 1, r.bottom - 1, PC_BLACK, FILLRECT_CHECKER);
1763                                 }
1764                         }
1765                 }
1766         }
1767
1768         virtual void OnClick(Point pt, int widget, int click_count)
1769         {
1770                 switch (GB(widget, 0, 16)) {
1771                         case WID_BRW_WAYPOINT: {
1772                                 byte type = GB(widget, 16, 16);
1773                                 this->GetWidget<NWidgetMatrix>(WID_BRW_WAYPOINT_MATRIX)->SetClicked(_cur_waypoint_type);
1774
1775                                 /* Check station availability callback */
1776                                 const StationSpec *statspec = StationClass::Get(STAT_CLASS_WAYP)->GetSpec(type);
1777                                 if (!IsStationAvailable(statspec)) return;
1778
1779                                 _cur_waypoint_type = type;
1780                                 this->GetWidget<NWidgetMatrix>(WID_BRW_WAYPOINT_MATRIX)->SetClicked(_cur_waypoint_type);
1781                                 if (_settings_client.sound.click_beep) SndPlayFx(SND_15_BEEP);
1782                                 this->SetDirty();
1783                                 break;
1784                         }
1785                 }
1786         }
1787 };
1788
1789 /** Nested widget definition for the build NewGRF rail waypoint window */
1790 static const NWidgetPart _nested_build_waypoint_widgets[] = {
1791         NWidget(NWID_HORIZONTAL),
1792                 NWidget(WWT_CLOSEBOX, COLOUR_DARK_GREEN),
1793                 NWidget(WWT_CAPTION, COLOUR_DARK_GREEN), SetDataTip(STR_WAYPOINT_CAPTION, STR_TOOLTIP_WINDOW_TITLE_DRAG_THIS),
1794                 NWidget(WWT_DEFSIZEBOX, COLOUR_DARK_GREEN),
1795         EndContainer(),
1796         NWidget(NWID_HORIZONTAL),
1797                 NWidget(NWID_MATRIX, COLOUR_DARK_GREEN, WID_BRW_WAYPOINT_MATRIX), SetPIP(3, 2, 3), SetScrollbar(WID_BRW_SCROLL),
1798                         NWidget(WWT_PANEL, COLOUR_DARK_GREEN, WID_BRW_WAYPOINT), SetMinimalSize(66, 60), SetDataTip(0x0, STR_WAYPOINT_GRAPHICS_TOOLTIP), SetScrollbar(WID_BRW_SCROLL), EndContainer(),
1799                 EndContainer(),
1800                 NWidget(NWID_VERTICAL),
1801                         NWidget(NWID_VSCROLLBAR, COLOUR_DARK_GREEN, WID_BRW_SCROLL),
1802                         NWidget(WWT_RESIZEBOX, COLOUR_DARK_GREEN),
1803                 EndContainer(),
1804         EndContainer(),
1805 };
1806
1807 static WindowDesc _build_waypoint_desc(
1808         WDP_AUTO, "build_waypoint", 0, 0,
1809         WC_BUILD_WAYPOINT, WC_BUILD_TOOLBAR,
1810         WDF_CONSTRUCTION,
1811         _nested_build_waypoint_widgets, lengthof(_nested_build_waypoint_widgets)
1812 );
1813
1814 static void ShowBuildWaypointPicker(Window *parent)
1815 {
1816         new BuildRailWaypointWindow(&_build_waypoint_desc, parent);
1817 }
1818
1819 /**
1820  * Initialize rail building GUI settings
1821  */
1822 void InitializeRailGui()
1823 {
1824         _build_depot_direction = DIAGDIR_NW;
1825 }
1826
1827 /**
1828  * Re-initialize rail-build toolbar after toggling support for electric trains
1829  * @param disable Boolean whether electric trains are disabled (removed from the game)
1830  */
1831 void ReinitGuiAfterToggleElrail(bool disable)
1832 {
1833         extern RailType _last_built_railtype;
1834         if (disable && _last_built_railtype == RAILTYPE_ELECTRIC) {
1835                 _last_built_railtype = _cur_railtype = RAILTYPE_RAIL;
1836                 BuildRailToolbarWindow *w = dynamic_cast<BuildRailToolbarWindow *>(FindWindowById(WC_BUILD_TOOLBAR, TRANSPORT_RAIL));
1837                 if (w != NULL) w->ModifyRailType(_cur_railtype);
1838         }
1839         MarkWholeScreenDirty();
1840 }
1841
1842 /** Set the initial (default) railtype to use */
1843 static void SetDefaultRailGui()
1844 {
1845         if (_local_company == COMPANY_SPECTATOR || !Company::IsValidID(_local_company)) return;
1846
1847         extern RailType _last_built_railtype;
1848         RailType rt = (RailType)(_settings_client.gui.default_rail_type + RAILTYPE_END);
1849         if (rt == DEF_RAILTYPE_MOST_USED) {
1850                 /* Find the most used rail type */
1851                 RailType count[RAILTYPE_END];
1852                 memset(count, 0, sizeof(count));
1853                 for (TileIndex t = 0; t < MapSize(); t++) {
1854                         if (IsRailwayTile(t) || IsRailDepotTile(t) || IsLevelCrossingTile(t) || HasStationTileRail(t) ||
1855                                         maptile_is_rail_tunnel(t)) {
1856                                 count[GetRailType(t)]++;
1857                         }
1858                 }
1859
1860                 rt = RAILTYPE_RAIL;
1861                 for (RailType r = RAILTYPE_ELECTRIC; r < RAILTYPE_END; r++) {
1862                         if (count[r] >= count[rt]) rt = r;
1863                 }
1864
1865                 /* No rail, just get the first available one */
1866                 if (count[rt] == 0) rt = DEF_RAILTYPE_FIRST;
1867         }
1868         switch (rt) {
1869                 case DEF_RAILTYPE_FIRST:
1870                         rt = RAILTYPE_RAIL;
1871                         while (rt < RAILTYPE_END && !HasRailtypeAvail(_local_company, rt)) rt++;
1872                         break;
1873
1874                 case DEF_RAILTYPE_LAST:
1875                         rt = GetBestRailtype(_local_company);
1876                         break;
1877
1878                 default:
1879                         break;
1880         }
1881
1882         _last_built_railtype = _cur_railtype = rt;
1883         BuildRailToolbarWindow *w = dynamic_cast<BuildRailToolbarWindow *>(FindWindowById(WC_BUILD_TOOLBAR, TRANSPORT_RAIL));
1884         if (w != NULL) w->ModifyRailType(_cur_railtype);
1885 }
1886
1887 /**
1888  * Updates the current signal variant used in the signal GUI
1889  * to the one adequate to current year.
1890  * @param p needed to be called when a setting changes
1891  * @return success, needed for settings
1892  */
1893 bool ResetSignalVariant(int32 p)
1894 {
1895         SignalVariant new_variant = (_cur_year < _settings_client.gui.semaphore_build_before ? SIG_SEMAPHORE : SIG_ELECTRIC);
1896
1897         if (new_variant != _cur_signal_variant) {
1898                 Window *w = FindWindowById(WC_BUILD_SIGNAL, 0);
1899                 if (w != NULL) {
1900                         w->SetDirty();
1901                         w->RaiseWidget((_cur_signal_variant == SIG_ELECTRIC ? WID_BS_ELECTRIC_NORM : WID_BS_SEMAPHORE_NORM) + _cur_signal_type);
1902                 }
1903                 _cur_signal_variant = new_variant;
1904         }
1905
1906         return true;
1907 }
1908
1909 /**
1910  * Resets the rail GUI - sets default railtype to build
1911  * and resets the signal GUI
1912  */
1913 void InitializeRailGUI()
1914 {
1915         SetDefaultRailGui();
1916
1917         _convert_signal_button = false;
1918         _cur_signal_type = _default_signal_type[_settings_client.gui.default_signal_type];
1919         ResetSignalVariant();
1920 }
1921
1922 /**
1923  * Compare railtypes based on their sorting order.
1924  * @param first  The railtype to compare to.
1925  * @param second The railtype to compare.
1926  * @return True iff the first should be sorted before the second.
1927  */
1928 static int CDECL CompareRailTypes(const DropDownListItem * const *first, const DropDownListItem * const *second)
1929 {
1930         return GetRailTypeInfo((RailType)(*first)->result)->sorting_order - GetRailTypeInfo((RailType)(*second)->result)->sorting_order;
1931 }
1932
1933 /**
1934  * Create a drop down list for all the rail types of the local company.
1935  * @param for_replacement Whether this list is for the replacement window.
1936  * @return The populated and sorted #DropDownList.
1937  */
1938 DropDownList *GetRailTypeDropDownList(bool for_replacement)
1939 {
1940         RailTypes used_railtypes = RAILTYPES_NONE;
1941
1942         /* Find the used railtypes. */
1943         Engine *e;
1944         FOR_ALL_ENGINES_OF_TYPE(e, VEH_TRAIN) {
1945                 if (!HasBit(e->info.climates, _settings_game.game_creation.landscape)) continue;
1946
1947                 used_railtypes |= GetRailTypeInfo(e->u.rail.railtype)->introduces_railtypes;
1948         }
1949
1950         /* Get the date introduced railtypes as well. */
1951         used_railtypes = AddDateIntroducedRailTypes(used_railtypes, MAX_DAY);
1952
1953         const Company *c = Company::Get(_local_company);
1954         DropDownList *list = new DropDownList();
1955         for (RailType rt = RAILTYPE_BEGIN; rt != RAILTYPE_END; rt++) {
1956                 /* If it's not used ever, don't show it to the user. */
1957                 if (!HasBit(used_railtypes, rt)) continue;
1958
1959                 const RailtypeInfo *rti = GetRailTypeInfo(rt);
1960                 /* Skip rail type if it has no label */
1961                 if (rti->label == 0) continue;
1962
1963                 StringID str = for_replacement ? rti->strings.replace_text : (rti->max_speed > 0 ? STR_TOOLBAR_RAILTYPE_VELOCITY : STR_JUST_STRING);
1964                 DropDownListParamStringItem *item = new DropDownListParamStringItem(str, rt, !HasBit(c->avail_railtypes, rt));
1965                 item->SetParam(0, rti->strings.menu_text);
1966                 item->SetParam(1, rti->max_speed);
1967                 *list->Append() = item;
1968         }
1969         QSortT(list->Begin(), list->Length(), CompareRailTypes);
1970         return list;
1971 }