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 "tracerestrict.h"
  38 #include "logic_signals.h"
  39 #include "error.h"
  40
  41 #include "station_map.h"
  42 #include "tunnelbridge_map.h"
  43
  44 #include "widgets/rail_widget.h"
  45
  46 #include "safeguards.h"
  47
  48
  49 static RailType _cur_railtype;               ///< Rail type of the current build-rail toolbar.
  50 static bool _remove_button_clicked;          ///< Flag whether 'remove' toggle-button is currently enabled
  51 static DiagDirection _build_depot_direction; ///< Currently selected depot direction
  52 static byte _waypoint_count = 1;             ///< Number of waypoint types
  53 static byte _cur_waypoint_type;              ///< Currently selected waypoint type
  54 static bool _convert_signal_button;          ///< convert signal button in the signal GUI pressed
  55 static bool _trace_restrict_button;          ///< trace restrict button in the signal GUI pressed
  56 static SignalVariant _cur_signal_variant;    ///< set the signal variant (for signal GUI)
  57 static SignalType _cur_signal_type;          ///< set the signal type (for signal GUI)
  58
  59 extern TileIndex _rail_track_endtile;
  60
  61 /* Map the setting: default_signal_type to the corresponding signal type */
  62 static const SignalType _default_signal_type[] = {SIGTYPE_NORMAL, SIGTYPE_PBS, SIGTYPE_PBS_ONEWAY};
  63
  64 static const int HOTKEY_POLYRAIL     = 0x1000;
  65 static const int HOTKEY_NEW_POLYRAIL = 0x1001;
  66
  67 struct RailStationGUISettings {
  68         Axis orientation;                 ///< Currently selected rail station orientation
  69
  70         bool newstations;                 ///< Are custom station definitions available?
  71         StationClassID station_class;     ///< Currently selected custom station class (if newstations is \c true )
  72         byte station_type;                ///< %Station type within the currently selected custom station class (if newstations is \c true )
  73         byte station_count;               ///< Number of custom stations (if newstations is \c true )
  74 };
  75 static RailStationGUISettings _railstation; ///< Settings of the station builder GUI
  76
  77
  78 static void HandleStationPlacement(TileIndex start, TileIndex end);
  79 static void ShowBuildTrainDepotPicker(Window *parent);
  80 static void ShowBuildWaypointPicker(Window *parent);
  81 static void ShowStationBuilder(Window *parent);
  82 static void ShowSignalBuilder(Window *parent);
  83
  84 /**
  85  * Check whether a station type can be build.
  86  * @return true if building is allowed.
  87  */
  88 static bool IsStationAvailable(const StationSpec *statspec)
  89 {
  90         if (statspec == nullptr || !HasBit(statspec->callback_mask, CBM_STATION_AVAIL)) return true;
  91
  92         uint16 cb_res = GetStationCallback(CBID_STATION_AVAILABILITY, 0, 0, statspec, nullptr, INVALID_TILE);
  93         if (cb_res == CALLBACK_FAILED) return true;
  94
  95         return Convert8bitBooleanCallback(statspec->grf_prop.grffile, CBID_STATION_AVAILABILITY, cb_res);
  96 }
  97
  98 void CcPlaySound_SPLAT_RAIL(const CommandCost &result, TileIndex tile, uint32 p1, uint32 p2)
  99 {
 100         if (result.Succeeded() && _settings_client.sound.confirm) SndPlayTileFx(SND_20_SPLAT_RAIL, tile);
 101 }
 102
 103 static CommandContainer GenericPlaceRailCmd(TileIndex tile, Track track)
 104 {
 105         CommandContainer ret = {
 106                 tile,          // tile
 107                 (uint32)_cur_railtype, // p1
 108                 (uint32)track,         // p2
 109                 _remove_button_clicked ?
 110                                 CMD_REMOVE_SINGLE_RAIL | CMD_MSG(STR_ERROR_CAN_T_REMOVE_RAILROAD_TRACK) :
 111                                 CMD_BUILD_SINGLE_RAIL | CMD_MSG(STR_ERROR_CAN_T_BUILD_RAILROAD_TRACK), // cmd
 112                         CcPlaySound_SPLAT_RAIL, // callback
 113                 0,             // binary_length
 114                 ""             // text
 115         };
 116
 117         return ret;
 118 }
 119
 120 /**
 121  * Try to add an additional rail-track at the entrance of a depot
 122  * @param tile  Tile to use for adding the rail-track
 123  * @param dir   Direction to check for already present tracks
 124  * @param track Track to add
 125  * @see CcRailDepot()
 126  */
 127 static void PlaceExtraDepotRail(TileIndex tile, DiagDirection dir, Track track)
 128 {
 129         if (GetRailTileType(tile) != RAIL_TILE_NORMAL) return;
 130         if ((GetTrackBits(tile) & DiagdirReachesTracks(dir)) == 0) return;
 131
 132         DoCommandP(tile, _cur_railtype, track, CMD_BUILD_SINGLE_RAIL);
 133 }
 134
 135 /** Additional pieces of track to add at the entrance of a depot. */
 136 static const Track _place_depot_extra_track[12] = {
 137         TRACK_LEFT,  TRACK_UPPER, TRACK_UPPER, TRACK_RIGHT, // First additional track for directions 0..3
 138         TRACK_X,     TRACK_Y,     TRACK_X,     TRACK_Y,     // Second additional track
 139         TRACK_LOWER, TRACK_LEFT,  TRACK_RIGHT, TRACK_LOWER, // Third additional track
 140 };
 141
 142 /** Direction to check for existing track pieces. */
 143 static const DiagDirection _place_depot_extra_dir[12] = {
 144         DIAGDIR_SE, DIAGDIR_SW, DIAGDIR_SE, DIAGDIR_SW,
 145         DIAGDIR_SW, DIAGDIR_NW, DIAGDIR_NE, DIAGDIR_SE,
 146         DIAGDIR_NW, DIAGDIR_NE, DIAGDIR_NW, DIAGDIR_NE,
 147 };
 148
 149 void CcRailDepot(const CommandCost &result, TileIndex tile, uint32 p1, uint32 p2)
 150 {
 151         if (result.Failed()) return;
 152
 153         DiagDirection dir = (DiagDirection)p2;
 154
 155         if (_settings_client.sound.confirm) SndPlayTileFx(SND_20_SPLAT_RAIL, tile);
 156         if (!_settings_client.gui.persistent_buildingtools) ResetObjectToPlace();
 157
 158         tile += TileOffsByDiagDir(dir);
 159
 160         if (IsTileType(tile, MP_RAILWAY)) {
 161                 PlaceExtraDepotRail(tile, _place_depot_extra_dir[dir], _place_depot_extra_track[dir]);
 162                 PlaceExtraDepotRail(tile, _place_depot_extra_dir[dir + 4], _place_depot_extra_track[dir + 4]);
 163                 PlaceExtraDepotRail(tile, _place_depot_extra_dir[dir + 8], _place_depot_extra_track[dir + 8]);
 164         }
 165 }
 166
 167 /**
 168  * Place a rail waypoint.
 169  * @param tile Position to start dragging a waypoint.
 170  */
 171 static void PlaceRail_Waypoint(TileIndex tile)
 172 {
 173         if (_remove_button_clicked) {
 174                 VpStartPlaceSizing(tile, VPM_X_AND_Y, DDSP_REMOVE_STATION);
 175                 return;
 176         }
 177
 178         Axis axis = GetAxisForNewWaypoint(tile);
 179         if (IsValidAxis(axis)) {
 180                 /* Valid tile for waypoints */
 181                 VpStartPlaceSizing(tile, axis == AXIS_X ? VPM_X_LIMITED : VPM_Y_LIMITED, DDSP_BUILD_STATION);
 182                 VpSetPlaceSizingLimit(_settings_game.station.station_spread);
 183         } else {
 184                 /* Tile where we can't build rail waypoints. This is always going to fail,
 185                  * but provides the user with a proper error message. */
 186                 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));
 187         }
 188 }
 189
 190 void CcStation(const CommandCost &result, TileIndex tile, uint32 p1, uint32 p2)
 191 {
 192         if (result.Failed()) return;
 193
 194         if (_settings_client.sound.confirm) SndPlayTileFx(SND_20_SPLAT_RAIL, tile);
 195         /* Only close the station builder window if the default station and non persistent building is chosen. */
 196         if (_railstation.station_class == STAT_CLASS_DFLT && _railstation.station_type == 0 && !_settings_client.gui.persistent_buildingtools) ResetObjectToPlace();
 197 }
 198
 199 /**
 200  * Place a rail station.
 201  * @param tile Position to place or start dragging a station.
 202  */
 203 static void PlaceRail_Station(TileIndex tile)
 204 {
 205         if (_remove_button_clicked) {
 206                 VpStartPlaceSizing(tile, VPM_X_AND_Y_LIMITED, DDSP_REMOVE_STATION);
 207                 VpSetPlaceSizingLimit(-1);
 208         } else if (_settings_client.gui.station_dragdrop) {
 209                 VpStartPlaceSizing(tile, VPM_X_AND_Y_LIMITED, DDSP_BUILD_STATION);
 210                 VpSetPlaceSizingLimit(_settings_game.station.station_spread);
 211         } else {
 212                 uint32 p1 = _cur_railtype | _railstation.orientation << 5 | _settings_client.gui.station_numtracks << 8 | _settings_client.gui.station_platlength << 16 | _ctrl_pressed << 24;
 213                 uint32 p2 = _railstation.station_class | _railstation.station_type << 8 | INVALID_STATION << 16;
 214
 215                 int w = _settings_client.gui.station_numtracks;
 216                 int h = _settings_client.gui.station_platlength;
 217                 if (!_railstation.orientation) Swap(w, h);
 218
 219                 CommandContainer cmdcont = { tile, p1, p2, CMD_BUILD_RAIL_STATION | CMD_MSG(STR_ERROR_CAN_T_BUILD_RAILROAD_STATION), CcStation, 0, "" };
 220                 ShowSelectStationIfNeeded(cmdcont, TileArea(tile, w, h));
 221         }
 222 }
 223
 224 /**
 225  * Build a new signal or edit/remove a present signal, use CmdBuildSingleSignal() or CmdRemoveSingleSignal() in rail_cmd.cpp
 226  *
 227  * @param tile The tile where the signal will build or edit
 228  */
 229 static void GenericPlaceSignals(TileIndex tile)
 230 {
 231         TrackBits trackbits = TrackStatusToTrackBits(GetTileTrackStatus(tile, TRANSPORT_RAIL, 0));
 232
 233         if (trackbits & TRACK_BIT_VERT) { // N-S direction
 234                 trackbits = (_tile_fract_coords.x <= _tile_fract_coords.y) ? TRACK_BIT_RIGHT : TRACK_BIT_LEFT;
 235         }
 236
 237         if (trackbits & TRACK_BIT_HORZ) { // E-W direction
 238                 trackbits = (_tile_fract_coords.x + _tile_fract_coords.y <= 15) ? TRACK_BIT_UPPER : TRACK_BIT_LOWER;
 239         }
 240
 241         Track track = FindFirstTrack(trackbits);
 242
 243         if (_remove_button_clicked) {
 244                 DoCommandP(tile, track, 0, CMD_REMOVE_SIGNALS | CMD_MSG(STR_ERROR_CAN_T_REMOVE_SIGNALS_FROM), CcPlaySound_SPLAT_RAIL);
 245         } else if (_trace_restrict_button) {
 246                 if (IsPlainRailTile(tile) && HasTrack(tile, track) && HasSignalOnTrack(tile, track)) {
 247                         ShowTraceRestrictProgramWindow(tile, track);
 248                 }
 249         } else {
 250                 const Window *w = FindWindowById(WC_BUILD_SIGNAL, 0);
 251
 252                 /* Map the setting cycle_signal_types to the lower and upper allowed signal type. */
 253                 static const uint cycle_bounds[] = {SIGTYPE_NORMAL | (SIGTYPE_LAST_NOPBS << 3), SIGTYPE_PBS | (SIGTYPE_LAST << 3), SIGTYPE_NORMAL | (SIGTYPE_LAST << 3)};
 254
 255                 /* various bitstuffed elements for CmdBuildSingleSignal() */
 256                 uint32 p1 = track;
 257
 258                 if (w != nullptr) {
 259                         /* signal GUI is used */
 260                         SB(p1, 3, 1, _ctrl_pressed);
 261                         SB(p1, 4, 1, _cur_signal_variant);
 262                         SB(p1, 5, 3, _cur_signal_type);
 263                         SB(p1, 8, 1, _convert_signal_button);
 264                         SB(p1, 9, 6, cycle_bounds[_settings_client.gui.cycle_signal_types]);
 265                 } else {
 266                         SB(p1, 3, 1, _ctrl_pressed);
 267                         SB(p1, 4, 1, (_cur_year < _settings_client.gui.semaphore_build_before ? SIG_SEMAPHORE : SIG_ELECTRIC));
 268                         SB(p1, 5, 3, _default_signal_type[_settings_client.gui.default_signal_type]);
 269                         SB(p1, 8, 1, 0);
 270                         SB(p1, 9, 6, cycle_bounds[_settings_client.gui.cycle_signal_types]);
 271                 }
 272
 273                 DoCommandP(tile, p1, 0, CMD_BUILD_SIGNALS |
 274                                 CMD_MSG((w != nullptr && _convert_signal_button) ? STR_ERROR_SIGNAL_CAN_T_CONVERT_SIGNALS_HERE : STR_ERROR_CAN_T_BUILD_SIGNALS_HERE),
 275                                 CcPlaySound_SPLAT_RAIL);
 276         }
 277 }
 278
 279 /**
 280  * Start placing a rail bridge.
 281  * @param tile Position of the first tile of the bridge.
 282  * @param w    Rail toolbar window.
 283  */
 284 static void PlaceRail_Bridge(TileIndex tile, Window *w)
 285 {
 286         if (IsBridgeTile(tile)) {
 287                 TileIndex other_tile = GetOtherTunnelBridgeEnd(tile);
 288                 Point pt = {0, 0};
 289                 w->OnPlaceMouseUp(VPM_X_OR_Y, DDSP_BUILD_BRIDGE, pt, other_tile, tile);
 290         } else {
 291                 VpStartPlaceSizing(tile, VPM_X_OR_Y, DDSP_BUILD_BRIDGE);
 292         }
 293 }
 294
 295 /** Command callback for building a tunnel */
 296 void CcBuildRailTunnel(const CommandCost &result, TileIndex tile, uint32 p1, uint32 p2)
 297 {
 298         if (result.Succeeded()) {
 299                 if (_settings_client.sound.confirm) SndPlayTileFx(SND_20_SPLAT_RAIL, tile);
 300                 if (!_settings_client.gui.persistent_buildingtools) ResetObjectToPlace();
 301                 StoreRailPlacementEndpoints(tile, _build_tunnel_endtile, TileX(tile) == TileX(_build_tunnel_endtile) ? TRACK_Y : TRACK_X, false);
 302         } else {
 303                 SetRedErrorSquare(_build_tunnel_endtile);
 304         }
 305 }
 306
 307 /**
 308  * Toggles state of the Remove button of Build rail toolbar
 309  * @param w window the button belongs to
 310  */
 311 static void ToggleRailButton_Remove(Window *w)
 312 {
 313         DeleteWindowById(WC_SELECT_STATION, 0);
 314         w->ToggleWidgetLoweredState(WID_RAT_REMOVE);
 315         w->SetWidgetDirty(WID_RAT_REMOVE);
 316         _remove_button_clicked = w->IsWidgetLowered(WID_RAT_REMOVE);
 317         SetSelectionRed(_remove_button_clicked);
 318 }
 319
 320 /**
 321  * Updates the Remove button because of Ctrl state change
 322  * @param w window the button belongs to
 323  * @return true iff the remove button was changed
 324  */
 325 static bool RailToolbar_CtrlChanged(Window *w)
 326 {
 327         if (w->IsWidgetDisabled(WID_RAT_REMOVE)) return false;
 328
 329         /* allow ctrl to switch remove mode only for these widgets */
 330         for (uint i = WID_RAT_BUILD_NS; i <= WID_RAT_BUILD_STATION; i++) {
 331                 if ((i <= WID_RAT_POLYRAIL || i >= WID_RAT_BUILD_WAYPOINT) && w->IsWidgetLowered(i)) {
 332                         ToggleRailButton_Remove(w);
 333                         return true;
 334                 }
 335         }
 336
 337         return false;
 338 }
 339
 340
 341 /**
 342  * The "remove"-button click proc of the build-rail toolbar.
 343  * @param w Build-rail toolbar window
 344  * @see BuildRailToolbarWindow::OnClick()
 345  */
 346 static void BuildRailClick_Remove(Window *w)
 347 {
 348         if (w->IsWidgetDisabled(WID_RAT_REMOVE)) return;
 349         ToggleRailButton_Remove(w);
 350         if (_settings_client.sound.click_beep) SndPlayFx(SND_15_BEEP);
 351
 352         /* handle station builder */
 353         if (w->IsWidgetLowered(WID_RAT_BUILD_STATION)) {
 354                 if (_remove_button_clicked) {
 355                         /* starting drag & drop remove */
 356                         if (!_settings_client.gui.station_dragdrop) {
 357                                 SetTileSelectSize(1, 1);
 358                         } else {
 359                                 VpSetPlaceSizingLimit(-1);
 360                         }
 361                 } else {
 362                         /* starting station build mode */
 363                         if (!_settings_client.gui.station_dragdrop) {
 364                                 int x = _settings_client.gui.station_numtracks;
 365                                 int y = _settings_client.gui.station_platlength;
 366                                 if (_railstation.orientation == 0) Swap(x, y);
 367                                 SetTileSelectSize(x, y);
 368                         } else {
 369                                 VpSetPlaceSizingLimit(_settings_game.station.station_spread);
 370                         }
 371                 }
 372         }
 373 }
 374
 375 static CommandContainer DoRailroadTrackCmd(TileIndex start_tile, TileIndex end_tile, Track track)
 376 {
 377         CommandContainer ret = {
 378                 start_tile,                   // tile
 379                 end_tile,                     // p1
 380                 (uint32)(_cur_railtype | (track << 5)), // p2
 381                 (uint32)(_remove_button_clicked ?
 382                                 CMD_REMOVE_RAILROAD_TRACK | CMD_MSG(STR_ERROR_CAN_T_REMOVE_RAILROAD_TRACK) :
 383                                 CMD_BUILD_RAILROAD_TRACK  | CMD_MSG(STR_ERROR_CAN_T_BUILD_RAILROAD_TRACK)), // cmd
 384                         CcPlaySound_SPLAT_RAIL, // callback
 385                 0u,                            // binary_length
 386                 ""                            // text
 387         };
 388
 389         return ret;
 390 }
 391
 392 static void HandleAutodirPlacement()
 393 {
 394         Track track = (Track)(_thd.drawstyle & HT_DIR_MASK); // 0..5
 395         TileIndex start_tile = TileVirtXY(_thd.selstart.x, _thd.selstart.y);
 396         TileIndex end_tile = TileVirtXY(_thd.selend.x, _thd.selend.y);
 397
 398         CommandContainer cmd = (_thd.drawstyle & HT_RAIL) ?
 399                         GenericPlaceRailCmd(end_tile, track) : // one tile case
 400                         DoRailroadTrackCmd(start_tile, end_tile, track); // multitile selection
 401
 402         /* When overbuilding existing tracks in polyline mode we just want to move the
 403          * snap point without altering the user with the "already built" error. Don't
 404          * execute the command right away, firstly check if tracks are being overbuilt. */
 405         if (!(_thd.place_mode & HT_POLY) || _shift_pressed ||
 406                         DoCommand(&cmd, DC_AUTO | DC_NO_WATER).GetErrorMessage() != STR_ERROR_ALREADY_BUILT) {
 407                 /* place tracks */
 408                 if (!DoCommandP(&cmd)) return;
 409         }
 410
 411         /* save new snap points for the polyline tool */
 412         if (!_shift_pressed && _rail_track_endtile != INVALID_TILE) {
 413                 StoreRailPlacementEndpoints(start_tile, _rail_track_endtile, track, true);
 414         }
 415 }
 416
 417 /**
 418  * Build new signals or remove signals or (if only one tile marked) edit a signal.
 419  *
 420  * If one tile marked abort and use GenericPlaceSignals()
 421  * else use CmdBuildSingleSignal() or CmdRemoveSingleSignal() in rail_cmd.cpp to build many signals
 422  */
 423 static void HandleAutoSignalPlacement()
 424 {
 425         uint32 p2 = GB(_thd.drawstyle, 0, 3); // 0..5
 426
 427         if ((_thd.drawstyle & HT_DRAG_MASK) == HT_RECT) { // one tile case
 428                 GenericPlaceSignals(TileVirtXY(_thd.selend.x, _thd.selend.y));
 429                 return;
 430         }
 431
 432         const Window *w = FindWindowById(WC_BUILD_SIGNAL, 0);
 433
 434         if (w != nullptr) {
 435                 /* signal GUI is used */
 436                 SB(p2,  3, 1, 0);
 437                 SB(p2,  4, 1, _cur_signal_variant);
 438                 SB(p2,  6, 1, _ctrl_pressed);
 439                 SB(p2,  7, 3, _cur_signal_type);
 440                 SB(p2, 24, 8, _settings_client.gui.drag_signals_density);
 441                 SB(p2, 10, 1, !_settings_client.gui.drag_signals_fixed_distance);
 442         } else {
 443                 SB(p2,  3, 1, 0);
 444                 SB(p2,  4, 1, (_cur_year < _settings_client.gui.semaphore_build_before ? SIG_SEMAPHORE : SIG_ELECTRIC));
 445                 SB(p2,  6, 1, _ctrl_pressed);
 446                 SB(p2,  7, 3, _default_signal_type[_settings_client.gui.default_signal_type]);
 447                 SB(p2, 24, 8, _settings_client.gui.drag_signals_density);
 448                 SB(p2, 10, 1, !_settings_client.gui.drag_signals_fixed_distance);
 449         }
 450
 451         /* _settings_client.gui.drag_signals_density is given as a parameter such that each user
 452          * in a network game can specify his/her own signal density */
 453         DoCommandP(TileVirtXY(_thd.selstart.x, _thd.selstart.y), TileVirtXY(_thd.selend.x, _thd.selend.y), p2,
 454                         _remove_button_clicked ?
 455                         CMD_REMOVE_SIGNAL_TRACK | CMD_MSG(STR_ERROR_CAN_T_REMOVE_SIGNALS_FROM) :
 456                         CMD_BUILD_SIGNAL_TRACK  | CMD_MSG(STR_ERROR_CAN_T_BUILD_SIGNALS_HERE),
 457                         CcPlaySound_SPLAT_RAIL);
 458 }
 459
 460
 461 /** Rail toolbar management class. */
 462 struct BuildRailToolbarWindow : Window {
 463         RailType railtype;    ///< Rail type to build.
 464         int last_user_action; ///< Last started user action.
 465
 466         BuildRailToolbarWindow(WindowDesc *desc, RailType railtype) : Window(desc)
 467         {
 468                 this->InitNested(TRANSPORT_RAIL);
 469                 this->SetupRailToolbar(railtype);
 470                 this->DisableWidget(WID_RAT_REMOVE);
 471                 this->last_user_action = WIDGET_LIST_END;
 472
 473                 if (_settings_client.gui.link_terraform_toolbar) ShowTerraformToolbar(this);
 474         }
 475
 476         ~BuildRailToolbarWindow()
 477         {
 478                 if (_settings_client.gui.link_terraform_toolbar) DeleteWindowById(WC_SCEN_LAND_GEN, 0, false);
 479         }
 480
 481         /**
 482          * Some data on this window has become invalid.
 483          * @param data Information about the changed data.
 484          * @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.
 485          */
 486         virtual void OnInvalidateData(int data = 0, bool gui_scope = true)
 487         {
 488                 if (!gui_scope) return;
 489
 490                 if (!CanBuildVehicleInfrastructure(VEH_TRAIN)) delete this;
 491         }
 492
 493         /**
 494          * Configures the rail toolbar for railtype given
 495          * @param railtype the railtype to display
 496          */
 497         void SetupRailToolbar(RailType railtype)
 498         {
 499                 this->railtype = railtype;
 500                 const RailtypeInfo *rti = GetRailTypeInfo(railtype);
 501
 502                 assert(railtype < RAILTYPE_END);
 503                 this->GetWidget<NWidgetCore>(WID_RAT_BUILD_NS)->widget_data     = rti->gui_sprites.build_ns_rail;
 504                 this->GetWidget<NWidgetCore>(WID_RAT_BUILD_X)->widget_data      = rti->gui_sprites.build_x_rail;
 505                 this->GetWidget<NWidgetCore>(WID_RAT_BUILD_EW)->widget_data     = rti->gui_sprites.build_ew_rail;
 506                 this->GetWidget<NWidgetCore>(WID_RAT_BUILD_Y)->widget_data      = rti->gui_sprites.build_y_rail;
 507                 this->GetWidget<NWidgetCore>(WID_RAT_AUTORAIL)->widget_data     = rti->gui_sprites.auto_rail;
 508                 this->GetWidget<NWidgetCore>(WID_RAT_POLYRAIL)->widget_data     = rti->gui_sprites.auto_rail;
 509                 this->GetWidget<NWidgetCore>(WID_RAT_BUILD_DEPOT)->widget_data  = rti->gui_sprites.build_depot;
 510                 this->GetWidget<NWidgetCore>(WID_RAT_CONVERT_RAIL)->widget_data = rti->gui_sprites.convert_rail;
 511                 this->GetWidget<NWidgetCore>(WID_RAT_BUILD_TUNNEL)->widget_data = rti->gui_sprites.build_tunnel;
 512         }
 513
 514         /**
 515          * Switch to another rail type.
 516          * @param railtype New rail type.
 517          */
 518         void ModifyRailType(RailType railtype)
 519         {
 520                 this->SetupRailToolbar(railtype);
 521                 this->ReInit();
 522         }
 523
 524         void UpdateRemoveWidgetStatus(int clicked_widget)
 525         {
 526                 switch (clicked_widget) {
 527                         case WID_RAT_REMOVE:
 528                                 /* If it is the removal button that has been clicked, do nothing,
 529                                  * as it is up to the other buttons to drive removal status */
 530                                 return;
 531
 532                         case WID_RAT_BUILD_NS:
 533                         case WID_RAT_BUILD_X:
 534                         case WID_RAT_BUILD_EW:
 535                         case WID_RAT_BUILD_Y:
 536                         case WID_RAT_AUTORAIL:
 537                         case WID_RAT_POLYRAIL:
 538                         case WID_RAT_BUILD_WAYPOINT:
 539                         case WID_RAT_BUILD_STATION:
 540                         case WID_RAT_BUILD_SIGNALS:
 541                                 /* Removal button is enabled only if the rail/signal/waypoint/station
 542                                  * button is still lowered.  Once raised, it has to be disabled */
 543                                 this->SetWidgetDisabledState(WID_RAT_REMOVE, !this->IsWidgetLowered(clicked_widget));
 544                                 break;
 545
 546                         default:
 547                                 /* When any other buttons than rail/signal/waypoint/station, raise and
 548                                  * disable the removal button */
 549                                 this->DisableWidget(WID_RAT_REMOVE);
 550                                 this->RaiseWidget(WID_RAT_REMOVE);
 551                                 break;
 552                 }
 553         }
 554
 555         virtual void SetStringParameters(int widget) const
 556         {
 557                 if (widget == WID_RAT_CAPTION) {
 558                         const RailtypeInfo *rti = GetRailTypeInfo(this->railtype);
 559                         if (rti->max_speed > 0) {
 560                                 SetDParam(0, STR_TOOLBAR_RAILTYPE_VELOCITY);
 561                                 SetDParam(1, rti->strings.toolbar_caption);
 562                                 SetDParam(2, rti->max_speed);
 563                         } else {
 564                                 SetDParam(0, rti->strings.toolbar_caption);
 565                         }
 566                 }
 567         }
 568
 569         virtual void DrawWidget(const Rect &r, int widget) const
 570         {
 571                 if (widget == WID_RAT_POLYRAIL) {
 572                         Dimension d = GetSpriteSize(SPR_BLOT);
 573                         uint offset = this->IsWidgetLowered(WID_RAT_POLYRAIL) ? 1 : 0;
 574                         DrawSprite(SPR_BLOT, PALETTE_TO_GREY, (r.left + r.right - d.width) / 2 + offset, (r.top + r.bottom - d.height) / 2 + offset);
 575                 }
 576         }
 577
 578         virtual void OnClick(Point pt, int widget, int click_count)
 579         {
 580                 if (widget < WID_RAT_BUILD_NS) return;
 581
 582                 _remove_button_clicked = false;
 583                 switch (widget) {
 584                         case WID_RAT_BUILD_NS:
 585                                 HandlePlacePushButton(this, WID_RAT_BUILD_NS, GetRailTypeInfo(_cur_railtype)->cursor.rail_ns, HT_LINE | HT_DIR_VL);
 586                                 this->last_user_action = widget;
 587                                 break;
 588
 589                         case WID_RAT_BUILD_X:
 590                                 HandlePlacePushButton(this, WID_RAT_BUILD_X, GetRailTypeInfo(_cur_railtype)->cursor.rail_swne, HT_LINE | HT_DIR_X);
 591                                 this->last_user_action = widget;
 592                                 break;
 593
 594                         case WID_RAT_BUILD_EW:
 595                                 HandlePlacePushButton(this, WID_RAT_BUILD_EW, GetRailTypeInfo(_cur_railtype)->cursor.rail_ew, HT_LINE | HT_DIR_HL);
 596                                 this->last_user_action = widget;
 597                                 break;
 598
 599                         case WID_RAT_BUILD_Y:
 600                                 HandlePlacePushButton(this, WID_RAT_BUILD_Y, GetRailTypeInfo(_cur_railtype)->cursor.rail_nwse, HT_LINE | HT_DIR_Y);
 601                                 this->last_user_action = widget;
 602                                 break;
 603
 604                         case WID_RAT_AUTORAIL:
 605                                 HandlePlacePushButton(this, WID_RAT_AUTORAIL, GetRailTypeInfo(_cur_railtype)->cursor.autorail, HT_RAIL);
 606                                 this->last_user_action = widget;
 607                                 break;
 608
 609                         case WID_RAT_POLYRAIL: {
 610                                 bool was_snap = CurrentlySnappingRailPlacement();
 611                                 bool was_open = this->IsWidgetLowered(WID_RAT_POLYRAIL);
 612                                 bool do_snap;
 613                                 bool do_open;
 614                                 /* "polyrail" hotkey     - activate polyline tool in snapping mode, close the tool if snapping mode is already active
 615                                  * "new_polyrail" hotkey - activate polyline tool in non-snapping (new line) mode, close the tool if non-snapping mode is already active
 616                                  * button ctrl-clicking  - switch between snapping and non-snapping modes, open the tool in non-snapping mode if it is closed
 617                                  * button clicking       - open the tool in non-snapping mode, close the tool if it is opened */
 618                                 if (this->last_user_action == HOTKEY_POLYRAIL) {
 619                                         do_snap = true;
 620                                         do_open = !was_open || !was_snap;
 621                                 } else if (this->last_user_action == HOTKEY_NEW_POLYRAIL) {
 622                                         do_snap = false;
 623                                         do_open = !was_open || was_snap;
 624                                 } else if (_ctrl_pressed) {
 625                                         do_snap = !was_open || !was_snap;
 626                                         do_open = true;
 627                                 } else {
 628                                         do_snap = false;
 629                                         do_open = !was_open;
 630                                 }
 631                                 /* close the tool explicitly so it can be re-opened in different snapping mode */
 632                                 if (was_open) ResetObjectToPlace();
 633                                 /* open the tool in desired mode */
 634                                 if (do_open && HandlePlacePushButton(this, WID_RAT_POLYRAIL, GetRailTypeInfo(railtype)->cursor.autorail, do_snap ? (HT_RAIL | HT_POLY) : (HT_RAIL | HT_NEW_POLY))) {
 635                                         /* if we are re-opening the tool but we couldn't switch the snapping
 636                                          * then close the tool instead of appearing to be doing nothing */
 637                                         if (was_open && do_snap != CurrentlySnappingRailPlacement()) ResetObjectToPlace();
 638                                 }
 639                                 this->last_user_action = WID_RAT_POLYRAIL;
 640                                 break;
 641                         }
 642
 643                         case WID_RAT_DEMOLISH:
 644                                 HandlePlacePushButton(this, WID_RAT_DEMOLISH, ANIMCURSOR_DEMOLISH, HT_RECT | HT_DIAGONAL);
 645                                 this->last_user_action = widget;
 646                                 break;
 647
 648                         case WID_RAT_BUILD_DEPOT:
 649                                 if (HandlePlacePushButton(this, WID_RAT_BUILD_DEPOT, GetRailTypeInfo(_cur_railtype)->cursor.depot, HT_RECT)) {
 650                                         ShowBuildTrainDepotPicker(this);
 651                                         this->last_user_action = widget;
 652                                 }
 653                                 break;
 654
 655                         case WID_RAT_BUILD_WAYPOINT:
 656                                 this->last_user_action = widget;
 657                                 _waypoint_count = StationClass::Get(STAT_CLASS_WAYP)->GetSpecCount();
 658                                 if (HandlePlacePushButton(this, WID_RAT_BUILD_WAYPOINT, SPR_CURSOR_WAYPOINT, HT_RECT) && _waypoint_count > 1) {
 659                                         ShowBuildWaypointPicker(this);
 660                                 }
 661                                 break;
 662
 663                         case WID_RAT_BUILD_STATION:
 664                                 if (HandlePlacePushButton(this, WID_RAT_BUILD_STATION, SPR_CURSOR_RAIL_STATION, HT_RECT)) {
 665                                         ShowStationBuilder(this);
 666                                         this->last_user_action = widget;
 667                                 }
 668                                 break;
 669
 670                         case WID_RAT_BUILD_SIGNALS: {
 671                                 this->last_user_action = widget;
 672                                 bool started = HandlePlacePushButton(this, WID_RAT_BUILD_SIGNALS, ANIMCURSOR_BUILDSIGNALS, HT_RECT);
 673                                 if (started && _settings_client.gui.enable_signal_gui != _ctrl_pressed) {
 674                                         ShowSignalBuilder(this);
 675                                 }
 676                                 break;
 677                         }
 678
 679                         case WID_RAT_PROGRAM_SIGNALS:
 680                                 HandlePlacePushButton(this, WID_RAT_PROGRAM_SIGNALS, SPR_CURSOR_MOUSE, HT_RECT);
 681                                 this->last_user_action = widget;
 682                                 break;
 683
 684                         case WID_RAT_BUILD_BRIDGE:
 685                                 HandlePlacePushButton(this, WID_RAT_BUILD_BRIDGE, SPR_CURSOR_BRIDGE, HT_RECT);
 686                                 this->last_user_action = widget;
 687                                 break;
 688
 689                         case WID_RAT_BUILD_TUNNEL:
 690                                 HandlePlacePushButton(this, WID_RAT_BUILD_TUNNEL, GetRailTypeInfo(_cur_railtype)->cursor.tunnel, HT_SPECIAL | HT_TUNNEL);
 691                                 this->last_user_action = widget;
 692                                 break;
 693
 694                         case WID_RAT_REMOVE:
 695                                 BuildRailClick_Remove(this);
 696                                 break;
 697
 698                         case WID_RAT_CONVERT_RAIL:
 699                                 HandlePlacePushButton(this, WID_RAT_CONVERT_RAIL, GetRailTypeInfo(_cur_railtype)->cursor.convert, HT_RECT | HT_DIAGONAL);
 700                                 this->last_user_action = widget;
 701                                 break;
 702
 703                         default: NOT_REACHED();
 704                 }
 705                 this->UpdateRemoveWidgetStatus(widget);
 706                 if (_ctrl_pressed) RailToolbar_CtrlChanged(this);
 707         }
 708
 709         virtual EventState OnHotkey(int hotkey)
 710         {
 711                 MarkTileDirtyByTile(TileVirtXY(_thd.pos.x, _thd.pos.y)); // redraw tile selection
 712
 713                 if (hotkey == HOTKEY_POLYRAIL || hotkey == HOTKEY_NEW_POLYRAIL) {
 714                         /* Indicate to the OnClick that the action comes from a hotkey rather
 715                          * then from a click and that the CTRL state should be ignored. */
 716                         this->last_user_action = hotkey;
 717                         hotkey = WID_RAT_POLYRAIL;
 718                 }
 719
 720                 return this->Window::OnHotkey(hotkey);
 721         }
 722
 723         virtual void OnPlaceObject(Point pt, TileIndex tile)
 724         {
 725                 switch (this->last_user_action) {
 726                         case WID_RAT_BUILD_NS:
 727                                 VpStartPlaceSizing(tile, VPM_FIX_VERTICAL | VPM_RAILDIRS, DDSP_PLACE_RAIL);
 728                                 break;
 729
 730                         case WID_RAT_BUILD_X:
 731                                 VpStartPlaceSizing(tile, VPM_FIX_Y | VPM_RAILDIRS, DDSP_PLACE_RAIL);
 732                                 break;
 733
 734                         case WID_RAT_BUILD_EW:
 735                                 VpStartPlaceSizing(tile, VPM_FIX_HORIZONTAL | VPM_RAILDIRS, DDSP_PLACE_RAIL);
 736                                 break;
 737
 738                         case WID_RAT_BUILD_Y:
 739                                 VpStartPlaceSizing(tile, VPM_FIX_X | VPM_RAILDIRS, DDSP_PLACE_RAIL);
 740                                 break;
 741
 742                         case WID_RAT_AUTORAIL:
 743                         case WID_RAT_POLYRAIL:
 744                                 VpStartPlaceSizing(tile, VPM_RAILDIRS, DDSP_PLACE_RAIL);
 745                                 break;
 746
 747                         case WID_RAT_DEMOLISH:
 748                                 PlaceProc_DemolishArea(tile);
 749                                 break;
 750
 751                         case WID_RAT_BUILD_DEPOT:
 752                                 DoCommandP(tile, _cur_railtype, _build_depot_direction,
 753                                                 CMD_BUILD_TRAIN_DEPOT | CMD_MSG(STR_ERROR_CAN_T_BUILD_TRAIN_DEPOT),
 754                                                 CcRailDepot);
 755                                 break;
 756
 757                         case WID_RAT_BUILD_WAYPOINT:
 758                                 PlaceRail_Waypoint(tile);
 759                                 break;
 760
 761                         case WID_RAT_BUILD_STATION:
 762                                 PlaceRail_Station(tile);
 763                                 break;
 764
 765                         case WID_RAT_BUILD_SIGNALS:
 766                                 VpStartPlaceSizing(tile, VPM_SIGNALDIRS, DDSP_BUILD_SIGNALS);
 767                                 break;
 768
 769                         case WID_RAT_PROGRAM_SIGNALS:
 770                                 if (IsPlainRailTile(tile)) {
 771                                         Track track = SignalTrackFromTile(tile);
 772
 773                                         if (HasSignalOnTrack(tile, track) && IsLogicSignal(tile, track)) {
 774                                                 ShowSignalProgramWindow(FindSignalProgram(tile, track));
 775                                                 ResetObjectToPlace();
 776                                                 return;
 777                                         }
 778                                 }
 779                                 ShowErrorMessage(STR_ERROR_PROGRAM_NOT_LOGIC_SIGNAL, INVALID_STRING_ID, WL_ERROR);
 780                                 break;
 781
 782                         case WID_RAT_BUILD_BRIDGE:
 783                                 PlaceRail_Bridge(tile, this);
 784                                 break;
 785
 786                         case WID_RAT_BUILD_TUNNEL:
 787                                 DoCommandP(tile, _cur_railtype | (TRANSPORT_RAIL << 8), 0, CMD_BUILD_TUNNEL | CMD_MSG(STR_ERROR_CAN_T_BUILD_TUNNEL_HERE), CcBuildRailTunnel);
 788                                 break;
 789
 790                         case WID_RAT_CONVERT_RAIL:
 791                                 VpStartPlaceSizing(tile, VPM_X_AND_Y, DDSP_CONVERT_RAIL);
 792                                 break;
 793
 794                         default: NOT_REACHED();
 795                 }
 796         }
 797
 798         virtual void OnPlaceDrag(ViewportPlaceMethod select_method, ViewportDragDropSelectionProcess select_proc, Point pt)
 799         {
 800                 /* no dragging if you have pressed the convert button */
 801                 if (FindWindowById(WC_BUILD_SIGNAL, 0) != nullptr && _convert_signal_button && this->IsWidgetLowered(WID_RAT_BUILD_SIGNALS)) return;
 802
 803                 VpSelectTilesWithMethod(pt.x, pt.y, select_method);
 804         }
 805
 806         virtual void OnPlaceMouseUp(ViewportPlaceMethod select_method, ViewportDragDropSelectionProcess select_proc, Point pt, TileIndex start_tile, TileIndex end_tile)
 807         {
 808                 if (pt.x != -1) {
 809                         switch (select_proc) {
 810                                 default: NOT_REACHED();
 811                                 case DDSP_BUILD_BRIDGE:
 812                                         if (!_settings_client.gui.persistent_buildingtools) ResetObjectToPlace();
 813                                         ShowBuildBridgeWindow(start_tile, end_tile, TRANSPORT_RAIL, _cur_railtype);
 814                                         break;
 815
 816                                 case DDSP_PLACE_RAIL:
 817                                         HandleAutodirPlacement();
 818                                         break;
 819
 820                                 case DDSP_BUILD_SIGNALS:
 821                                         HandleAutoSignalPlacement();
 822                                         break;
 823
 824                                 case DDSP_DEMOLISH_AREA:
 825                                         GUIPlaceProcDragXY(select_proc, start_tile, end_tile);
 826                                         break;
 827
 828                                 case DDSP_CONVERT_RAIL:
 829                                         DoCommandP(end_tile, start_tile, _cur_railtype | (_ctrl_pressed ? (1 << 5) : 0), CMD_CONVERT_RAIL | CMD_MSG(STR_ERROR_CAN_T_CONVERT_RAIL), CcPlaySound_SPLAT_RAIL);
 830                                         break;
 831
 832                                 case DDSP_REMOVE_STATION:
 833                                 case DDSP_BUILD_STATION:
 834                                         if (this->IsWidgetLowered(WID_RAT_BUILD_STATION)) {
 835                                                 /* Station */
 836                                                 if (_remove_button_clicked) {
 837                                                         DoCommandP(end_tile, start_tile, _ctrl_pressed ? 0 : 1, CMD_REMOVE_FROM_RAIL_STATION | CMD_MSG(STR_ERROR_CAN_T_REMOVE_PART_OF_STATION), CcPlaySound_SPLAT_RAIL);
 838                                                 } else {
 839                                                         HandleStationPlacement(start_tile, end_tile);
 840                                                 }
 841                                         } else {
 842                                                 /* Waypoint */
 843                                                 if (_remove_button_clicked) {
 844                                                         DoCommandP(end_tile, start_tile, _ctrl_pressed ? 0 : 1, CMD_REMOVE_FROM_RAIL_WAYPOINT | CMD_MSG(STR_ERROR_CAN_T_REMOVE_TRAIN_WAYPOINT), CcPlaySound_SPLAT_RAIL);
 845                                                 } else {
 846                                                         TileArea ta(start_tile, end_tile);
 847                                                         uint32 p1 = _cur_railtype | (select_method == VPM_X_LIMITED ? AXIS_X : AXIS_Y) << 4 | ta.w << 8 | ta.h << 16 | _ctrl_pressed << 24;
 848                                                         uint32 p2 = STAT_CLASS_WAYP | _cur_waypoint_type << 8 | INVALID_STATION << 16;
 849
 850                                                         CommandContainer cmdcont = { ta.tile, p1, p2, CMD_BUILD_RAIL_WAYPOINT | CMD_MSG(STR_ERROR_CAN_T_BUILD_TRAIN_WAYPOINT), CcPlaySound_SPLAT_RAIL, 0, "" };
 851                                                         ShowSelectWaypointIfNeeded(cmdcont, ta);
 852                                                 }
 853                                         }
 854                                         break;
 855                         }
 856                 }
 857         }
 858
 859         virtual void OnPlaceObjectAbort()
 860         {
 861                 this->RaiseButtons();
 862                 this->DisableWidget(WID_RAT_REMOVE);
 863                 this->SetWidgetDirty(WID_RAT_REMOVE);
 864
 865                 DeleteWindowById(WC_BUILD_SIGNAL, TRANSPORT_RAIL);
 866                 DeleteWindowById(WC_BUILD_STATION, TRANSPORT_RAIL);
 867                 DeleteWindowById(WC_BUILD_DEPOT, TRANSPORT_RAIL);
 868                 DeleteWindowById(WC_BUILD_WAYPOINT, TRANSPORT_RAIL);
 869                 DeleteWindowById(WC_SELECT_STATION, 0);
 870                 DeleteWindowByClass(WC_BUILD_BRIDGE);
 871         }
 872
 873         virtual void OnPlacePresize(Point pt, TileIndex tile)
 874         {
 875                 DoCommand(tile, _cur_railtype | (TRANSPORT_RAIL << 8), 0, DC_AUTO, CMD_BUILD_TUNNEL);
 876                 VpSetPresizeRange(tile, _build_tunnel_endtile == 0 ? tile : _build_tunnel_endtile);
 877         }
 878
 879         virtual EventState OnCTRLStateChange()
 880         {
 881                 /* do not toggle Remove button by Ctrl when placing station */
 882                 if (!this->IsWidgetLowered(WID_RAT_BUILD_STATION) && !this->IsWidgetLowered(WID_RAT_BUILD_WAYPOINT) && RailToolbar_CtrlChanged(this)) return ES_HANDLED;
 883                 return ES_NOT_HANDLED;
 884         }
 885
 886         static HotkeyList hotkeys;
 887 };
 888
 889 /**
 890  * Handler for global hotkeys of the BuildRailToolbarWindow.
 891  * @param hotkey Hotkey
 892  * @return ES_HANDLED if hotkey was accepted.
 893  */
 894 static EventState RailToolbarGlobalHotkeys(int hotkey)
 895 {
 896         if (_game_mode != GM_NORMAL || !CanBuildVehicleInfrastructure(VEH_TRAIN)) return ES_NOT_HANDLED;
 897         extern RailType _last_built_railtype;
 898         Window *w = ShowBuildRailToolbar(_last_built_railtype);
 899         if (w == nullptr) return ES_NOT_HANDLED;
 900         return w->OnHotkey(hotkey);
 901 }
 902
 903 const uint16 _railtoolbar_autorail_keys[] = {'5', 'A' | WKC_GLOBAL_HOTKEY, 0};
 904 const uint16 _railtoolbar_polyrail_keys[] = {'5' | WKC_CTRL, 'A' | WKC_CTRL | WKC_GLOBAL_HOTKEY, 0};
 905 const uint16 _railtoolbar_new_poly_keys[] = {'5' | WKC_CTRL | WKC_SHIFT, 'A' | WKC_CTRL | WKC_SHIFT | WKC_GLOBAL_HOTKEY, 0};
 906
 907 static Hotkey railtoolbar_hotkeys[] = {
 908         Hotkey('1', "build_ns", WID_RAT_BUILD_NS),
 909         Hotkey('2', "build_x", WID_RAT_BUILD_X),
 910         Hotkey('3', "build_ew", WID_RAT_BUILD_EW),
 911         Hotkey('4', "build_y", WID_RAT_BUILD_Y),
 912         Hotkey(_railtoolbar_autorail_keys, "autorail", WID_RAT_AUTORAIL),
 913         Hotkey(_railtoolbar_polyrail_keys, "polyrail", HOTKEY_POLYRAIL),
 914         Hotkey(_railtoolbar_new_poly_keys, "new_polyrail", HOTKEY_NEW_POLYRAIL),
 915         Hotkey('6', "demolish", WID_RAT_DEMOLISH),
 916         Hotkey('7', "depot", WID_RAT_BUILD_DEPOT),
 917         Hotkey('8', "waypoint", WID_RAT_BUILD_WAYPOINT),
 918         Hotkey('9', "station", WID_RAT_BUILD_STATION),
 919         Hotkey('S', "signal", WID_RAT_BUILD_SIGNALS),
 920         Hotkey('B', "bridge", WID_RAT_BUILD_BRIDGE),
 921         Hotkey('T', "tunnel", WID_RAT_BUILD_TUNNEL),
 922         Hotkey('R', "remove", WID_RAT_REMOVE),
 923         Hotkey('C', "convert", WID_RAT_CONVERT_RAIL),
 924         HOTKEY_LIST_END
 925 };
 926 HotkeyList BuildRailToolbarWindow::hotkeys("railtoolbar", railtoolbar_hotkeys, RailToolbarGlobalHotkeys);
 927
 928 static const NWidgetPart _nested_build_rail_widgets[] = {
 929         NWidget(NWID_HORIZONTAL),
 930                 NWidget(WWT_CLOSEBOX, COLOUR_DARK_GREEN),
 931                 NWidget(WWT_CAPTION, COLOUR_DARK_GREEN, WID_RAT_CAPTION), SetDataTip(STR_WHITE_STRING, STR_TOOLTIP_WINDOW_TITLE_DRAG_THIS),
 932                 NWidget(WWT_STICKYBOX, COLOUR_DARK_GREEN),
 933         EndContainer(),
 934         NWidget(NWID_HORIZONTAL),
 935                 NWidget(WWT_IMGBTN, COLOUR_DARK_GREEN, WID_RAT_BUILD_NS),
 936                                                 SetFill(0, 1), SetMinimalSize(22, 22), SetDataTip(SPR_IMG_RAIL_NS, STR_RAIL_TOOLBAR_TOOLTIP_BUILD_RAILROAD_TRACK),
 937                 NWidget(WWT_IMGBTN, COLOUR_DARK_GREEN, WID_RAT_BUILD_X),
 938                                                 SetFill(0, 1), SetMinimalSize(22, 22), SetDataTip(SPR_IMG_RAIL_NE, STR_RAIL_TOOLBAR_TOOLTIP_BUILD_RAILROAD_TRACK),
 939                 NWidget(WWT_IMGBTN, COLOUR_DARK_GREEN, WID_RAT_BUILD_EW),
 940                                                 SetFill(0, 1), SetMinimalSize(22, 22), SetDataTip(SPR_IMG_RAIL_EW, STR_RAIL_TOOLBAR_TOOLTIP_BUILD_RAILROAD_TRACK),
 941                 NWidget(WWT_IMGBTN, COLOUR_DARK_GREEN, WID_RAT_BUILD_Y),
 942                                                 SetFill(0, 1), SetMinimalSize(22, 22), SetDataTip(SPR_IMG_RAIL_NW, STR_RAIL_TOOLBAR_TOOLTIP_BUILD_RAILROAD_TRACK),
 943                 NWidget(WWT_IMGBTN, COLOUR_DARK_GREEN, WID_RAT_AUTORAIL),
 944                                                 SetFill(0, 1), SetMinimalSize(22, 22), SetDataTip(SPR_IMG_AUTORAIL, STR_RAIL_TOOLBAR_TOOLTIP_BUILD_AUTORAIL),
 945                 NWidget(WWT_IMGBTN, COLOUR_DARK_GREEN, WID_RAT_POLYRAIL),
 946                                                 SetFill(0, 1), SetMinimalSize(22, 22), SetDataTip(SPR_IMG_AUTORAIL, STR_RAIL_TOOLBAR_TOOLTIP_BUILD_POLYRAIL),
 947
 948                 NWidget(WWT_PANEL, COLOUR_DARK_GREEN), SetMinimalSize(4, 22), SetDataTip(0x0, STR_NULL), EndContainer(),
 949
 950                 NWidget(WWT_IMGBTN, COLOUR_DARK_GREEN, WID_RAT_DEMOLISH),
 951                                                 SetFill(0, 1), SetMinimalSize(22, 22), SetDataTip(SPR_IMG_DYNAMITE, STR_TOOLTIP_DEMOLISH_BUILDINGS_ETC),
 952                 NWidget(WWT_IMGBTN, COLOUR_DARK_GREEN, WID_RAT_BUILD_DEPOT),
 953                                                 SetFill(0, 1), SetMinimalSize(22, 22), SetDataTip(SPR_IMG_DEPOT_RAIL, STR_RAIL_TOOLBAR_TOOLTIP_BUILD_TRAIN_DEPOT_FOR_BUILDING),
 954                 NWidget(WWT_IMGBTN, COLOUR_DARK_GREEN, WID_RAT_BUILD_WAYPOINT),
 955                                                 SetFill(0, 1), SetMinimalSize(22, 22), SetDataTip(SPR_IMG_WAYPOINT, STR_RAIL_TOOLBAR_TOOLTIP_CONVERT_RAIL_TO_WAYPOINT),
 956                 NWidget(WWT_IMGBTN, COLOUR_DARK_GREEN, WID_RAT_BUILD_STATION),
 957                                                 SetFill(0, 1), SetMinimalSize(42, 22), SetDataTip(SPR_IMG_RAIL_STATION, STR_RAIL_TOOLBAR_TOOLTIP_BUILD_RAILROAD_STATION),
 958                 NWidget(WWT_IMGBTN, COLOUR_DARK_GREEN, WID_RAT_BUILD_SIGNALS),
 959                                                 SetFill(0, 1), SetMinimalSize(22, 22), SetDataTip(SPR_IMG_RAIL_SIGNALS, STR_RAIL_TOOLBAR_TOOLTIP_BUILD_RAILROAD_SIGNALS),
 960                 NWidget(WWT_IMGBTN, COLOUR_DARK_GREEN, WID_RAT_PROGRAM_SIGNALS),
 961                                                 SetFill(0, 1), SetMinimalSize(22, 22), SetDataTip(SPR_IMG_SETTINGS, STR_RAIL_TOOLBAR_TOOLTIP_PROGRAM_SIGNAL),
 962                 NWidget(WWT_IMGBTN, COLOUR_DARK_GREEN, WID_RAT_BUILD_BRIDGE),
 963                                                 SetFill(0, 1), SetMinimalSize(42, 22), SetDataTip(SPR_IMG_BRIDGE, STR_RAIL_TOOLBAR_TOOLTIP_BUILD_RAILROAD_BRIDGE),
 964                 NWidget(WWT_IMGBTN, COLOUR_DARK_GREEN, WID_RAT_BUILD_TUNNEL),
 965                                                 SetFill(0, 1), SetMinimalSize(20, 22), SetDataTip(SPR_IMG_TUNNEL_RAIL, STR_RAIL_TOOLBAR_TOOLTIP_BUILD_RAILROAD_TUNNEL),
 966                 NWidget(WWT_IMGBTN, COLOUR_DARK_GREEN, WID_RAT_REMOVE),
 967                                                 SetFill(0, 1), SetMinimalSize(22, 22), SetDataTip(SPR_IMG_REMOVE, STR_RAIL_TOOLBAR_TOOLTIP_TOGGLE_BUILD_REMOVE_FOR),
 968                 NWidget(WWT_IMGBTN, COLOUR_DARK_GREEN, WID_RAT_CONVERT_RAIL),
 969                                                 SetFill(0, 1), SetMinimalSize(22, 22), SetDataTip(SPR_IMG_CONVERT_RAIL, STR_RAIL_TOOLBAR_TOOLTIP_CONVERT_RAIL),
 970         EndContainer(),
 971 };
 972
 973 static WindowDesc _build_rail_desc(
 974         WDP_ALIGN_TOOLBAR, "toolbar_rail", 0, 0,
 975         WC_BUILD_TOOLBAR, WC_NONE,
 976         WDF_CONSTRUCTION,
 977         _nested_build_rail_widgets, lengthof(_nested_build_rail_widgets),
 978         &BuildRailToolbarWindow::hotkeys
 979 );
 980
 981
 982 /**
 983  * Open the build rail toolbar window for a specific rail type.
 984  *
 985  * If the terraform toolbar is linked to the toolbar, that window is also opened.
 986  *
 987  * @param railtype Rail type to open the window for
 988  * @return newly opened rail toolbar, or nullptr if the toolbar could not be opened.
 989  */
 990 Window *ShowBuildRailToolbar(RailType railtype)
 991 {
 992         if (!Company::IsValidID(_local_company)) return nullptr;
 993         if (!ValParamRailtype(railtype)) return nullptr;
 994
 995         DeleteWindowByClass(WC_BUILD_TOOLBAR);
 996         _cur_railtype = railtype;
 997         _remove_button_clicked = false;
 998         return new BuildRailToolbarWindow(&_build_rail_desc, railtype);
 999 }
1000
1001 /* TODO: For custom stations, respect their allowed platforms/lengths bitmasks!
1002  * --pasky */
1003
1004 static void HandleStationPlacement(TileIndex start, TileIndex end)
1005 {
1006         TileArea ta(start, end);
1007         uint numtracks = ta.w;
1008         uint platlength = ta.h;
1009
1010         if (_railstation.orientation == AXIS_X) Swap(numtracks, platlength);
1011
1012         uint32 p1 = _cur_railtype | _railstation.orientation << 5 | numtracks << 8 | platlength << 16 | _ctrl_pressed << 24;
1013         uint32 p2 = _railstation.station_class | _railstation.station_type << 8 | INVALID_STATION << 16;
1014
1015         CommandContainer cmdcont = { ta.tile, p1, p2, CMD_BUILD_RAIL_STATION | CMD_MSG(STR_ERROR_CAN_T_BUILD_RAILROAD_STATION), CcStation, 0, "" };
1016         ShowSelectStationIfNeeded(cmdcont, ta);
1017 }
1018
1019 struct BuildRailStationWindow : public PickerWindowBase {
1020 private:
1021         uint line_height;     ///< Height of a single line in the newstation selection matrix (#WID_BRAS_NEWST_LIST widget).
1022         uint coverage_height; ///< Height of the coverage texts.
1023         Scrollbar *vscroll;   ///< Vertical scrollbar of the new station list.
1024         Scrollbar *vscroll2;  ///< Vertical scrollbar of the matrix with new stations.
1025
1026         /**
1027          * Verify whether the currently selected station size is allowed after selecting a new station class/type.
1028          * If not, change the station size variables ( _settings_client.gui.station_numtracks and _settings_client.gui.station_platlength ).
1029          * @param statspec Specification of the new station class/type
1030          */
1031         void CheckSelectedSize(const StationSpec *statspec)
1032         {
1033                 if (statspec == nullptr || _settings_client.gui.station_dragdrop) return;
1034
1035                 /* If current number of tracks is not allowed, make it as big as possible */
1036                 if (HasBit(statspec->disallowed_platforms, _settings_client.gui.station_numtracks - 1)) {
1037                         this->RaiseWidget(_settings_client.gui.station_numtracks + WID_BRAS_PLATFORM_NUM_BEGIN);
1038                         _settings_client.gui.station_numtracks = 1;
1039                         if (statspec->disallowed_platforms != UINT8_MAX) {
1040                                 while (HasBit(statspec->disallowed_platforms, _settings_client.gui.station_numtracks - 1)) {
1041                                         _settings_client.gui.station_numtracks++;
1042                                 }
1043                                 this->LowerWidget(_settings_client.gui.station_numtracks + WID_BRAS_PLATFORM_NUM_BEGIN);
1044                         }
1045                 }
1046
1047                 if (HasBit(statspec->disallowed_lengths, _settings_client.gui.station_platlength - 1)) {
1048                         this->RaiseWidget(_settings_client.gui.station_platlength + WID_BRAS_PLATFORM_LEN_BEGIN);
1049                         _settings_client.gui.station_platlength = 1;
1050                         if (statspec->disallowed_lengths != UINT8_MAX) {
1051                                 while (HasBit(statspec->disallowed_lengths, _settings_client.gui.station_platlength - 1)) {
1052                                         _settings_client.gui.station_platlength++;
1053                                 }
1054                                 this->LowerWidget(_settings_client.gui.station_platlength + WID_BRAS_PLATFORM_LEN_BEGIN);
1055                         }
1056                 }
1057         }
1058
1059 public:
1060         BuildRailStationWindow(WindowDesc *desc, Window *parent, bool newstation) : PickerWindowBase(desc, parent)
1061         {
1062                 this->coverage_height = 2 * FONT_HEIGHT_NORMAL + 3 * WD_PAR_VSEP_NORMAL;
1063                 this->vscroll = nullptr;
1064                 _railstation.newstations = newstation;
1065
1066                 this->CreateNestedTree();
1067                 NWidgetStacked *newst_additions = this->GetWidget<NWidgetStacked>(WID_BRAS_SHOW_NEWST_ADDITIONS);
1068                 newst_additions->SetDisplayedPlane(newstation ? 0 : SZSP_NONE);
1069                 newst_additions = this->GetWidget<NWidgetStacked>(WID_BRAS_SHOW_NEWST_MATRIX);
1070                 newst_additions->SetDisplayedPlane(newstation ? 0 : SZSP_NONE);
1071                 newst_additions = this->GetWidget<NWidgetStacked>(WID_BRAS_SHOW_NEWST_DEFSIZE);
1072                 newst_additions->SetDisplayedPlane(newstation ? 0 : SZSP_NONE);
1073                 newst_additions = this->GetWidget<NWidgetStacked>(WID_BRAS_SHOW_NEWST_RESIZE);
1074                 newst_additions->SetDisplayedPlane(newstation ? 0 : SZSP_NONE);
1075                 if (newstation) {
1076                         this->vscroll = this->GetScrollbar(WID_BRAS_NEWST_SCROLL);
1077                         this->vscroll2 = this->GetScrollbar(WID_BRAS_MATRIX_SCROLL);
1078                 }
1079                 this->FinishInitNested(TRANSPORT_RAIL);
1080
1081                 this->LowerWidget(_railstation.orientation + WID_BRAS_PLATFORM_DIR_X);
1082                 if (_settings_client.gui.station_dragdrop) {
1083                         this->LowerWidget(WID_BRAS_PLATFORM_DRAG_N_DROP);
1084                 } else {
1085                         this->LowerWidget(_settings_client.gui.station_numtracks + WID_BRAS_PLATFORM_NUM_BEGIN);
1086                         this->LowerWidget(_settings_client.gui.station_platlength + WID_BRAS_PLATFORM_LEN_BEGIN);
1087                 }
1088                 this->SetWidgetLoweredState(WID_BRAS_HIGHLIGHT_OFF, !_settings_client.gui.station_show_coverage);
1089                 this->SetWidgetLoweredState(WID_BRAS_HIGHLIGHT_ON, _settings_client.gui.station_show_coverage);
1090
1091                 if (!newstation || _railstation.station_class >= (int)StationClass::GetClassCount()) {
1092                         /* New stations are not available or changed, so ensure the default station
1093                          * type is 'selected'. */
1094                         _railstation.station_class = STAT_CLASS_DFLT;
1095                         _railstation.station_type = 0;
1096                         this->vscroll2 = nullptr;
1097                 }
1098                 if (newstation) {
1099                         _railstation.station_count = StationClass::Get(_railstation.station_class)->GetSpecCount();
1100                         _railstation.station_type = min(_railstation.station_type, _railstation.station_count - 1);
1101
1102                         int count = 0;
1103                         for (uint i = 0; i < StationClass::GetClassCount(); i++) {
1104                                 if (i == STAT_CLASS_WAYP) continue;
1105                                 count++;
1106                         }
1107                         this->vscroll->SetCount(count);
1108                         this->vscroll->SetPosition(Clamp(_railstation.station_class - 2, 0, max(this->vscroll->GetCount() - this->vscroll->GetCapacity(), 0)));
1109
1110                         NWidgetMatrix *matrix = this->GetWidget<NWidgetMatrix>(WID_BRAS_MATRIX);
1111                         matrix->SetScrollbar(this->vscroll2);
1112                         matrix->SetCount(_railstation.station_count);
1113                         matrix->SetClicked(_railstation.station_type);
1114                 }
1115         }
1116
1117         virtual ~BuildRailStationWindow()
1118         {
1119                 DeleteWindowById(WC_SELECT_STATION, 0);
1120         }
1121
1122         virtual void OnPaint()
1123         {
1124                 bool newstations = _railstation.newstations;
1125                 const StationSpec *statspec = newstations ? StationClass::Get(_railstation.station_class)->GetSpec(_railstation.station_type) : nullptr;
1126
1127                 if (_settings_client.gui.station_dragdrop) {
1128                         SetTileSelectSize(1, 1);
1129                 } else {
1130                         int x = _settings_client.gui.station_numtracks;
1131                         int y = _settings_client.gui.station_platlength;
1132                         if (_railstation.orientation == AXIS_X) Swap(x, y);
1133                         if (!_remove_button_clicked) {
1134                                 SetTileSelectSize(x, y);
1135                         }
1136                 }
1137
1138                 int rad = (_settings_game.station.modified_catchment) ? CA_TRAIN : CA_UNMODIFIED;
1139
1140                 if (_settings_client.gui.station_show_coverage) SetTileSelectBigSize(-rad, -rad, 2 * rad, 2 * rad);
1141
1142                 for (uint bits = 0; bits < 7; bits++) {
1143                         bool disable = bits >= _settings_game.station.station_spread;
1144                         if (statspec == nullptr) {
1145                                 this->SetWidgetDisabledState(bits + WID_BRAS_PLATFORM_NUM_1, disable);
1146                                 this->SetWidgetDisabledState(bits + WID_BRAS_PLATFORM_LEN_1, disable);
1147                         } else {
1148                                 this->SetWidgetDisabledState(bits + WID_BRAS_PLATFORM_NUM_1, HasBit(statspec->disallowed_platforms, bits) || disable);
1149                                 this->SetWidgetDisabledState(bits + WID_BRAS_PLATFORM_LEN_1, HasBit(statspec->disallowed_lengths,   bits) || disable);
1150                         }
1151                 }
1152
1153                 this->DrawWidgets();
1154
1155                 /* 'Accepts' and 'Supplies' texts. */
1156                 NWidgetBase *cov = this->GetWidget<NWidgetBase>(WID_BRAS_COVERAGE_TEXTS);
1157                 int top = cov->pos_y + WD_PAR_VSEP_NORMAL;
1158                 int left = cov->pos_x + WD_FRAMERECT_LEFT;
1159                 int right = cov->pos_x + cov->current_x - WD_FRAMERECT_RIGHT;
1160                 int bottom = cov->pos_y + cov->current_y;
1161                 top = DrawStationCoverageAreaText(left, right, top, SCT_ALL, rad, false) + WD_PAR_VSEP_NORMAL;
1162                 top = DrawStationCoverageAreaText(left, right, top, SCT_ALL, rad, true) + WD_PAR_VSEP_NORMAL;
1163                 /* Resize background if the window is too small.
1164                  * Never make the window smaller to avoid oscillating if the size change affects the acceptance.
1165                  * (This is the case, if making the window bigger moves the mouse into the window.) */
1166                 if (top > bottom) {
1167                         this->coverage_height += top - bottom;
1168                         this->ReInit();
1169                 }
1170         }
1171
1172         virtual void UpdateWidgetSize(int widget, Dimension *size, const Dimension &padding, Dimension *fill, Dimension *resize)
1173         {
1174                 switch (widget) {
1175                         case WID_BRAS_NEWST_LIST: {
1176                                 Dimension d = {0, 0};
1177                                 for (uint i = 0; i < StationClass::GetClassCount(); i++) {
1178                                         if (i == STAT_CLASS_WAYP) continue;
1179                                         d = maxdim(d, GetStringBoundingBox(StationClass::Get((StationClassID)i)->name));
1180                                 }
1181                                 size->width = max(size->width, d.width + padding.width);
1182                                 this->line_height = FONT_HEIGHT_NORMAL + WD_MATRIX_TOP + WD_MATRIX_BOTTOM;
1183                                 size->height = 5 * this->line_height;
1184                                 resize->height = this->line_height;
1185                                 break;
1186                         }
1187
1188                         case WID_BRAS_SHOW_NEWST_TYPE: {
1189                                 if (!_railstation.newstations) {
1190                                         size->width = 0;
1191                                         size->height = 0;
1192                                         break;
1193                                 }
1194
1195                                 /* If newstations exist, compute the non-zero minimal size. */
1196                                 Dimension d = {0, 0};
1197                                 StringID str = this->GetWidget<NWidgetCore>(widget)->widget_data;
1198                                 for (StationClassID statclass = STAT_CLASS_BEGIN; statclass < (StationClassID)StationClass::GetClassCount(); statclass++) {
1199                                         if (statclass == STAT_CLASS_WAYP) continue;
1200                                         StationClass *stclass = StationClass::Get(statclass);
1201                                         for (uint16 j = 0; j < stclass->GetSpecCount(); j++) {
1202                                                 const StationSpec *statspec = stclass->GetSpec(j);
1203                                                 SetDParam(0, (statspec != nullptr && statspec->name != 0) ? statspec->name : STR_STATION_CLASS_DFLT);
1204                                                 d = maxdim(d, GetStringBoundingBox(str));
1205                                         }
1206                                 }
1207                                 size->width = max(size->width, d.width + padding.width);
1208                                 size->width = min(size->width, ScaleGUITrad(400));
1209                                 break;
1210                         }
1211
1212                         case WID_BRAS_PLATFORM_DIR_X:
1213                         case WID_BRAS_PLATFORM_DIR_Y:
1214                         case WID_BRAS_IMAGE:
1215                                 size->width  = ScaleGUITrad(64) + 2;
1216                                 size->height = ScaleGUITrad(58) + 2;
1217                                 break;
1218
1219                         case WID_BRAS_COVERAGE_TEXTS:
1220                                 size->height = this->coverage_height;
1221                                 break;
1222
1223                         case WID_BRAS_MATRIX:
1224                                 fill->height = 1;
1225                                 resize->height = 1;
1226                                 break;
1227                 }
1228         }
1229
1230         virtual void DrawWidget(const Rect &r, int widget) const
1231         {
1232                 DrawPixelInfo tmp_dpi;
1233
1234                 switch (GB(widget, 0, 16)) {
1235                         case WID_BRAS_PLATFORM_DIR_X:
1236                                 /* Set up a clipping area for the '/' station preview */
1237                                 if (FillDrawPixelInfo(&tmp_dpi, r.left, r.top, r.right - r.left + 1, r.bottom - r.top + 1)) {
1238                                         DrawPixelInfo *old_dpi = _cur_dpi;
1239                                         _cur_dpi = &tmp_dpi;
1240                                         int x = ScaleGUITrad(31) + 1;
1241                                         int y = r.bottom - r.top - ScaleGUITrad(31);
1242                                         if (!DrawStationTile(x, y, _cur_railtype, AXIS_X, _railstation.station_class, _railstation.station_type)) {
1243                                                 StationPickerDrawSprite(x, y, STATION_RAIL, _cur_railtype, RoadTypeIdentifier(), 2);
1244                                         }
1245                                         _cur_dpi = old_dpi;
1246                                 }
1247                                 break;
1248
1249                         case WID_BRAS_PLATFORM_DIR_Y:
1250                                 /* Set up a clipping area for the '\' station preview */
1251                                 if (FillDrawPixelInfo(&tmp_dpi, r.left, r.top, r.right - r.left + 1, r.bottom - r.top + 1)) {
1252                                         DrawPixelInfo *old_dpi = _cur_dpi;
1253                                         _cur_dpi = &tmp_dpi;
1254                                         int x = ScaleGUITrad(31) + 1;
1255                                         int y = r.bottom - r.top - ScaleGUITrad(31);
1256                                         if (!DrawStationTile(x, y, _cur_railtype, AXIS_Y, _railstation.station_class, _railstation.station_type)) {
1257                                                 StationPickerDrawSprite(x, y, STATION_RAIL, _cur_railtype, RoadTypeIdentifier(), 3);
1258                                         }
1259                                         _cur_dpi = old_dpi;
1260                                 }
1261                                 break;
1262
1263                         case WID_BRAS_NEWST_LIST: {
1264                                 uint statclass = 0;
1265                                 uint row = 0;
1266                                 for (uint i = 0; i < StationClass::GetClassCount(); i++) {
1267                                         if (i == STAT_CLASS_WAYP) continue;
1268                                         if (this->vscroll->IsVisible(statclass)) {
1269                                                 DrawString(r.left + WD_MATRIX_LEFT, r.right - WD_MATRIX_RIGHT, row * this->line_height + r.top + WD_MATRIX_TOP,
1270                                                                 StationClass::Get((StationClassID)i)->name,
1271                                                                 (StationClassID)i == _railstation.station_class ? TC_WHITE : TC_BLACK);
1272                                                 row++;
1273                                         }
1274                                         statclass++;
1275                                 }
1276                                 break;
1277                         }
1278
1279                         case WID_BRAS_IMAGE: {
1280                                 byte type = GB(widget, 16, 16);
1281                                 assert(type < _railstation.station_count);
1282                                 /* Check station availability callback */
1283                                 const StationSpec *statspec = StationClass::Get(_railstation.station_class)->GetSpec(type);
1284                                 if (!IsStationAvailable(statspec)) {
1285                                         GfxFillRect(r.left + 1, r.top + 1, r.right - 1, r.bottom - 1, PC_BLACK, FILLRECT_CHECKER);
1286                                 }
1287
1288                                 /* Set up a clipping area for the station preview. */
1289                                 if (FillDrawPixelInfo(&tmp_dpi, r.left, r.top, r.right - r.left + 1, r.bottom - r.top + 1)) {
1290                                         DrawPixelInfo *old_dpi = _cur_dpi;
1291                                         _cur_dpi = &tmp_dpi;
1292                                         int x = ScaleGUITrad(31) + 1;
1293                                         int y = r.bottom - r.top - ScaleGUITrad(31);
1294                                         if (!DrawStationTile(x, y, _cur_railtype, _railstation.orientation, _railstation.station_class, type)) {
1295                                                 StationPickerDrawSprite(x, y, STATION_RAIL, _cur_railtype, RoadTypeIdentifier(), 2 + _railstation.orientation);
1296                                         }
1297                                         _cur_dpi = old_dpi;
1298                                 }
1299                                 break;
1300                         }
1301                 }
1302         }
1303
1304         virtual void OnResize()
1305         {
1306                 if (this->vscroll != nullptr) { // New stations available.
1307                         this->vscroll->SetCapacityFromWidget(this, WID_BRAS_NEWST_LIST);
1308                 }
1309         }
1310
1311         virtual void SetStringParameters(int widget) const
1312         {
1313                 if (widget == WID_BRAS_SHOW_NEWST_TYPE) {
1314                         const StationSpec *statspec = StationClass::Get(_railstation.station_class)->GetSpec(_railstation.station_type);
1315                         SetDParam(0, (statspec != nullptr && statspec->name != 0) ? statspec->name : STR_STATION_CLASS_DFLT);
1316                 }
1317         }
1318
1319         virtual void OnClick(Point pt, int widget, int click_count)
1320         {
1321                 switch (GB(widget, 0, 16)) {
1322                         case WID_BRAS_PLATFORM_DIR_X:
1323                         case WID_BRAS_PLATFORM_DIR_Y:
1324                                 this->RaiseWidget(_railstation.orientation + WID_BRAS_PLATFORM_DIR_X);
1325                                 _railstation.orientation = (Axis)(widget - WID_BRAS_PLATFORM_DIR_X);
1326                                 this->LowerWidget(_railstation.orientation + WID_BRAS_PLATFORM_DIR_X);
1327                                 if (_settings_client.sound.click_beep) SndPlayFx(SND_15_BEEP);
1328                                 this->SetDirty();
1329                                 DeleteWindowById(WC_SELECT_STATION, 0);
1330                                 break;
1331
1332                         case WID_BRAS_PLATFORM_NUM_1:
1333                         case WID_BRAS_PLATFORM_NUM_2:
1334                         case WID_BRAS_PLATFORM_NUM_3:
1335                         case WID_BRAS_PLATFORM_NUM_4:
1336                         case WID_BRAS_PLATFORM_NUM_5:
1337                         case WID_BRAS_PLATFORM_NUM_6:
1338                         case WID_BRAS_PLATFORM_NUM_7: {
1339                                 this->RaiseWidget(_settings_client.gui.station_numtracks + WID_BRAS_PLATFORM_NUM_BEGIN);
1340                                 this->RaiseWidget(WID_BRAS_PLATFORM_DRAG_N_DROP);
1341
1342                                 _settings_client.gui.station_numtracks = widget - WID_BRAS_PLATFORM_NUM_BEGIN;
1343                                 _settings_client.gui.station_dragdrop = false;
1344
1345                                 _settings_client.gui.station_dragdrop = false;
1346
1347                                 const StationSpec *statspec = _railstation.newstations ? StationClass::Get(_railstation.station_class)->GetSpec(_railstation.station_type) : nullptr;
1348                                 if (statspec != nullptr && HasBit(statspec->disallowed_lengths, _settings_client.gui.station_platlength - 1)) {
1349                                         /* The previously selected number of platforms in invalid */
1350                                         for (uint i = 0; i < 7; i++) {
1351                                                 if (!HasBit(statspec->disallowed_lengths, i)) {
1352                                                         this->RaiseWidget(_settings_client.gui.station_platlength + WID_BRAS_PLATFORM_LEN_BEGIN);
1353                                                         _settings_client.gui.station_platlength = i + 1;
1354                                                         break;
1355                                                 }
1356                                         }
1357                                 }
1358
1359                                 this->LowerWidget(_settings_client.gui.station_numtracks + WID_BRAS_PLATFORM_NUM_BEGIN);
1360                                 this->LowerWidget(_settings_client.gui.station_platlength + WID_BRAS_PLATFORM_LEN_BEGIN);
1361                                 if (_settings_client.sound.click_beep) SndPlayFx(SND_15_BEEP);
1362                                 this->SetDirty();
1363                                 DeleteWindowById(WC_SELECT_STATION, 0);
1364                                 break;
1365                         }
1366
1367                         case WID_BRAS_PLATFORM_LEN_1:
1368                         case WID_BRAS_PLATFORM_LEN_2:
1369                         case WID_BRAS_PLATFORM_LEN_3:
1370                         case WID_BRAS_PLATFORM_LEN_4:
1371                         case WID_BRAS_PLATFORM_LEN_5:
1372                         case WID_BRAS_PLATFORM_LEN_6:
1373                         case WID_BRAS_PLATFORM_LEN_7: {
1374                                 this->RaiseWidget(_settings_client.gui.station_platlength + WID_BRAS_PLATFORM_LEN_BEGIN);
1375                                 this->RaiseWidget(WID_BRAS_PLATFORM_DRAG_N_DROP);
1376
1377                                 _settings_client.gui.station_platlength = widget - WID_BRAS_PLATFORM_LEN_BEGIN;
1378                                 _settings_client.gui.station_dragdrop = false;
1379
1380                                 _settings_client.gui.station_dragdrop = false;
1381
1382                                 const StationSpec *statspec = _railstation.newstations ? StationClass::Get(_railstation.station_class)->GetSpec(_railstation.station_type) : nullptr;
1383                                 if (statspec != nullptr && HasBit(statspec->disallowed_platforms, _settings_client.gui.station_numtracks - 1)) {
1384                                         /* The previously selected number of tracks in invalid */
1385                                         for (uint i = 0; i < 7; i++) {
1386                                                 if (!HasBit(statspec->disallowed_platforms, i)) {
1387                                                         this->RaiseWidget(_settings_client.gui.station_numtracks + WID_BRAS_PLATFORM_NUM_BEGIN);
1388                                                         _settings_client.gui.station_numtracks = i + 1;
1389                                                         break;
1390                                                 }
1391                                         }
1392                                 }
1393
1394                                 this->LowerWidget(_settings_client.gui.station_numtracks + WID_BRAS_PLATFORM_NUM_BEGIN);
1395                                 this->LowerWidget(_settings_client.gui.station_platlength + WID_BRAS_PLATFORM_LEN_BEGIN);
1396                                 if (_settings_client.sound.click_beep) SndPlayFx(SND_15_BEEP);
1397                                 this->SetDirty();
1398                                 DeleteWindowById(WC_SELECT_STATION, 0);
1399                                 break;
1400                         }
1401
1402                         case WID_BRAS_PLATFORM_DRAG_N_DROP: {
1403                                 _settings_client.gui.station_dragdrop ^= true;
1404
1405                                 this->ToggleWidgetLoweredState(WID_BRAS_PLATFORM_DRAG_N_DROP);
1406
1407                                 /* get the first allowed length/number of platforms */
1408                                 const StationSpec *statspec = _railstation.newstations ? StationClass::Get(_railstation.station_class)->GetSpec(_railstation.station_type) : nullptr;
1409                                 if (statspec != nullptr && HasBit(statspec->disallowed_lengths, _settings_client.gui.station_platlength - 1)) {
1410                                         for (uint i = 0; i < 7; i++) {
1411                                                 if (!HasBit(statspec->disallowed_lengths, i)) {
1412                                                         this->RaiseWidget(_settings_client.gui.station_platlength + WID_BRAS_PLATFORM_LEN_BEGIN);
1413                                                         _settings_client.gui.station_platlength = i + 1;
1414                                                         break;
1415                                                 }
1416                                         }
1417                                 }
1418                                 if (statspec != nullptr && HasBit(statspec->disallowed_platforms, _settings_client.gui.station_numtracks - 1)) {
1419                                         for (uint i = 0; i < 7; i++) {
1420                                                 if (!HasBit(statspec->disallowed_platforms, i)) {
1421                                                         this->RaiseWidget(_settings_client.gui.station_numtracks + WID_BRAS_PLATFORM_NUM_BEGIN);
1422                                                         _settings_client.gui.station_numtracks = i + 1;
1423                                                         break;
1424                                                 }
1425                                         }
1426                                 }
1427
1428                                 this->SetWidgetLoweredState(_settings_client.gui.station_numtracks + WID_BRAS_PLATFORM_NUM_BEGIN, !_settings_client.gui.station_dragdrop);
1429                                 this->SetWidgetLoweredState(_settings_client.gui.station_platlength + WID_BRAS_PLATFORM_LEN_BEGIN, !_settings_client.gui.station_dragdrop);
1430                                 if (_settings_client.sound.click_beep) SndPlayFx(SND_15_BEEP);
1431                                 this->SetDirty();
1432                                 DeleteWindowById(WC_SELECT_STATION, 0);
1433                                 break;
1434                         }
1435
1436                         case WID_BRAS_HIGHLIGHT_OFF:
1437                         case WID_BRAS_HIGHLIGHT_ON:
1438                                 _settings_client.gui.station_show_coverage = (widget != WID_BRAS_HIGHLIGHT_OFF);
1439
1440                                 this->SetWidgetLoweredState(WID_BRAS_HIGHLIGHT_OFF, !_settings_client.gui.station_show_coverage);
1441                                 this->SetWidgetLoweredState(WID_BRAS_HIGHLIGHT_ON, _settings_client.gui.station_show_coverage);
1442                                 if (_settings_client.sound.click_beep) SndPlayFx(SND_15_BEEP);
1443                                 this->SetDirty();
1444                                 break;
1445
1446                         case WID_BRAS_NEWST_LIST: {
1447                                 int y = this->vscroll->GetScrolledRowFromWidget(pt.y, this, WID_BRAS_NEWST_LIST, 0, this->line_height);
1448                                 if (y >= (int)StationClass::GetClassCount()) return;
1449                                 for (uint i = 0; i < StationClass::GetClassCount(); i++) {
1450                                         if (i == STAT_CLASS_WAYP) continue;
1451                                         if (y == 0) {
1452                                                 if (_railstation.station_class != (StationClassID)i) {
1453                                                         _railstation.station_class = (StationClassID)i;
1454                                                         StationClass *stclass = StationClass::Get(_railstation.station_class);
1455                                                         _railstation.station_count = stclass->GetSpecCount();
1456                                                         _railstation.station_type  = min((int)_railstation.station_type, max(0, (int)_railstation.station_count - 1));
1457
1458                                                         this->CheckSelectedSize(stclass->GetSpec(_railstation.station_type));
1459
1460                                                         NWidgetMatrix *matrix = this->GetWidget<NWidgetMatrix>(WID_BRAS_MATRIX);
1461                                                         matrix->SetCount(_railstation.station_count);
1462                                                         matrix->SetClicked(_railstation.station_type);
1463                                                 }
1464                                                 if (_settings_client.sound.click_beep) SndPlayFx(SND_15_BEEP);
1465                                                 this->SetDirty();
1466                                                 DeleteWindowById(WC_SELECT_STATION, 0);
1467                                                 break;
1468                                         }
1469                                         y--;
1470                                 }
1471                                 break;
1472                         }
1473
1474                         case WID_BRAS_IMAGE: {
1475                                 int y = GB(widget, 16, 16);
1476                                 if (y >= _railstation.station_count) return;
1477
1478                                 /* Check station availability callback */
1479                                 const StationSpec *statspec = StationClass::Get(_railstation.station_class)->GetSpec(y);
1480                                 if (!IsStationAvailable(statspec)) return;
1481
1482                                 _railstation.station_type = y;
1483
1484                                 this->CheckSelectedSize(statspec);
1485                                 this->GetWidget<NWidgetMatrix>(WID_BRAS_MATRIX)->SetClicked(_railstation.station_type);
1486
1487                                 if (_settings_client.sound.click_beep) SndPlayFx(SND_15_BEEP);
1488                                 this->SetDirty();
1489                                 DeleteWindowById(WC_SELECT_STATION, 0);
1490                                 break;
1491                         }
1492                 }
1493         }
1494
1495         virtual void OnTick()
1496         {
1497                 CheckRedrawStationCoverage(this);
1498         }
1499 };
1500
1501 static const NWidgetPart _nested_station_builder_widgets[] = {
1502         NWidget(NWID_HORIZONTAL),
1503                 NWidget(WWT_CLOSEBOX, COLOUR_DARK_GREEN),
1504                 NWidget(WWT_CAPTION, COLOUR_DARK_GREEN), SetDataTip(STR_STATION_BUILD_RAIL_CAPTION, STR_TOOLTIP_WINDOW_TITLE_DRAG_THIS),
1505                 NWidget(NWID_SELECTION, INVALID_COLOUR, WID_BRAS_SHOW_NEWST_DEFSIZE),
1506                         NWidget(WWT_DEFSIZEBOX, COLOUR_DARK_GREEN),
1507                 EndContainer(),
1508         EndContainer(),
1509         NWidget(WWT_PANEL, COLOUR_DARK_GREEN),
1510                 NWidget(NWID_HORIZONTAL),
1511                         NWidget(NWID_VERTICAL),
1512                                 NWidget(NWID_SELECTION, INVALID_COLOUR, WID_BRAS_SHOW_NEWST_ADDITIONS),
1513                                         NWidget(NWID_HORIZONTAL), SetPIP(7, 0, 7), SetPadding(2, 0, 1, 0),
1514                                                 NWidget(WWT_MATRIX, COLOUR_GREY, WID_BRAS_NEWST_LIST), SetMinimalSize(122, 71), SetFill(1, 0),
1515                                                                 SetMatrixDataTip(1, 0, STR_STATION_BUILD_STATION_CLASS_TOOLTIP), SetScrollbar(WID_BRAS_NEWST_SCROLL),
1516                                                 NWidget(NWID_VSCROLLBAR, COLOUR_GREY, WID_BRAS_NEWST_SCROLL),
1517                                         EndContainer(),
1518                                 EndContainer(),
1519                                 NWidget(WWT_LABEL, COLOUR_DARK_GREEN), SetMinimalSize(144, 11), SetDataTip(STR_STATION_BUILD_ORIENTATION, STR_NULL), SetPadding(1, 2, 0, 2),
1520                                 NWidget(NWID_HORIZONTAL),
1521                                         NWidget(NWID_SPACER), SetMinimalSize(7, 0), SetFill(1, 0),
1522                                         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(),
1523                                         NWidget(NWID_SPACER), SetMinimalSize(2, 0), SetFill(1, 0),
1524                                         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(),
1525                                         NWidget(NWID_SPACER), SetMinimalSize(7, 0), SetFill(1, 0),
1526                                 EndContainer(),
1527                                 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),
1528                                 NWidget(WWT_LABEL, COLOUR_DARK_GREEN), SetMinimalSize(144, 11), SetDataTip(STR_STATION_BUILD_NUMBER_OF_TRACKS, STR_NULL), SetPadding(0, 2, 0, 2),
1529                                 NWidget(NWID_HORIZONTAL),
1530                                         NWidget(NWID_SPACER), SetFill(1, 0),
1531                                         NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_BRAS_PLATFORM_NUM_1), SetMinimalSize(15, 12), SetDataTip(STR_BLACK_1, STR_STATION_BUILD_NUMBER_OF_TRACKS_TOOLTIP),
1532                                         NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_BRAS_PLATFORM_NUM_2), SetMinimalSize(15, 12), SetDataTip(STR_BLACK_2, STR_STATION_BUILD_NUMBER_OF_TRACKS_TOOLTIP),
1533                                         NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_BRAS_PLATFORM_NUM_3), SetMinimalSize(15, 12), SetDataTip(STR_BLACK_3, STR_STATION_BUILD_NUMBER_OF_TRACKS_TOOLTIP),
1534                                         NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_BRAS_PLATFORM_NUM_4), SetMinimalSize(15, 12), SetDataTip(STR_BLACK_4, STR_STATION_BUILD_NUMBER_OF_TRACKS_TOOLTIP),
1535                                         NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_BRAS_PLATFORM_NUM_5), SetMinimalSize(15, 12), SetDataTip(STR_BLACK_5, STR_STATION_BUILD_NUMBER_OF_TRACKS_TOOLTIP),
1536                                         NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_BRAS_PLATFORM_NUM_6), SetMinimalSize(15, 12), SetDataTip(STR_BLACK_6, STR_STATION_BUILD_NUMBER_OF_TRACKS_TOOLTIP),
1537                                         NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_BRAS_PLATFORM_NUM_7), SetMinimalSize(15, 12), SetDataTip(STR_BLACK_7, STR_STATION_BUILD_NUMBER_OF_TRACKS_TOOLTIP),
1538                                         NWidget(NWID_SPACER), SetFill(1, 0),
1539                                 EndContainer(),
1540                                 NWidget(WWT_LABEL, COLOUR_DARK_GREEN), SetMinimalSize(144, 11), SetDataTip(STR_STATION_BUILD_PLATFORM_LENGTH, STR_NULL), SetPadding(2, 2, 0, 2),
1541                                 NWidget(NWID_HORIZONTAL),
1542                                         NWidget(NWID_SPACER), SetFill(1, 0),
1543                                         NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_BRAS_PLATFORM_LEN_1), SetMinimalSize(15, 12), SetDataTip(STR_BLACK_1, STR_STATION_BUILD_PLATFORM_LENGTH_TOOLTIP),
1544                                         NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_BRAS_PLATFORM_LEN_2), SetMinimalSize(15, 12), SetDataTip(STR_BLACK_2, STR_STATION_BUILD_PLATFORM_LENGTH_TOOLTIP),
1545                                         NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_BRAS_PLATFORM_LEN_3), SetMinimalSize(15, 12), SetDataTip(STR_BLACK_3, STR_STATION_BUILD_PLATFORM_LENGTH_TOOLTIP),
1546                                         NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_BRAS_PLATFORM_LEN_4), SetMinimalSize(15, 12), SetDataTip(STR_BLACK_4, STR_STATION_BUILD_PLATFORM_LENGTH_TOOLTIP),
1547                                         NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_BRAS_PLATFORM_LEN_5), SetMinimalSize(15, 12), SetDataTip(STR_BLACK_5, STR_STATION_BUILD_PLATFORM_LENGTH_TOOLTIP),
1548                                         NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_BRAS_PLATFORM_LEN_6), SetMinimalSize(15, 12), SetDataTip(STR_BLACK_6, STR_STATION_BUILD_PLATFORM_LENGTH_TOOLTIP),
1549                                         NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_BRAS_PLATFORM_LEN_7), SetMinimalSize(15, 12), SetDataTip(STR_BLACK_7, STR_STATION_BUILD_PLATFORM_LENGTH_TOOLTIP),
1550                                         NWidget(NWID_SPACER), SetFill(1, 0),
1551                                 EndContainer(),
1552                                 NWidget(NWID_SPACER), SetMinimalSize(0, 2),
1553                                 NWidget(NWID_HORIZONTAL),
1554                                         NWidget(NWID_SPACER), SetMinimalSize(2, 0), SetFill(1, 0),
1555                                         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),
1556                                         NWidget(NWID_SPACER), SetMinimalSize(2, 0), SetFill(1, 0),
1557                                 EndContainer(),
1558                                 NWidget(WWT_LABEL, COLOUR_DARK_GREEN), SetMinimalSize(144, 11), SetDataTip(STR_STATION_BUILD_COVERAGE_AREA_TITLE, STR_NULL), SetPadding(3, 2, 0, 2),
1559                                 NWidget(NWID_HORIZONTAL),
1560                                         NWidget(NWID_SPACER), SetMinimalSize(2, 0), SetFill(1, 0),
1561                                         NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_BRAS_HIGHLIGHT_OFF), SetMinimalSize(60, 12),
1562                                                                                                 SetDataTip(STR_STATION_BUILD_COVERAGE_OFF, STR_STATION_BUILD_COVERAGE_AREA_OFF_TOOLTIP),
1563                                         NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_BRAS_HIGHLIGHT_ON), SetMinimalSize(60, 12),
1564                                                                                                 SetDataTip(STR_STATION_BUILD_COVERAGE_ON, STR_STATION_BUILD_COVERAGE_AREA_ON_TOOLTIP),
1565                                         NWidget(NWID_SPACER), SetMinimalSize(2, 0), SetFill(1, 0),
1566                                 EndContainer(),
1567                         EndContainer(),
1568                         NWidget(NWID_SELECTION, INVALID_COLOUR, WID_BRAS_SHOW_NEWST_MATRIX),
1569                                 /* We need an additional background for the matrix, as the matrix cannot handle the scrollbar due to not being an NWidgetCore. */
1570                                 NWidget(WWT_PANEL, COLOUR_DARK_GREEN), SetScrollbar(WID_BRAS_MATRIX_SCROLL),
1571                                         NWidget(NWID_HORIZONTAL),
1572                                                 NWidget(NWID_MATRIX, COLOUR_DARK_GREEN, WID_BRAS_MATRIX), SetScrollbar(WID_BRAS_MATRIX_SCROLL), SetPIP(0, 2, 0), SetPadding(2, 0, 0, 0),
1573                                                         NWidget(WWT_PANEL, COLOUR_DARK_GREEN, WID_BRAS_IMAGE), SetMinimalSize(66, 60),
1574                                                                         SetFill(0, 0), SetResize(0, 0), SetDataTip(0x0, STR_STATION_BUILD_STATION_TYPE_TOOLTIP), SetScrollbar(WID_BRAS_MATRIX_SCROLL),
1575                                                         EndContainer(),
1576                                                 EndContainer(),
1577                                                 NWidget(NWID_VSCROLLBAR, COLOUR_DARK_GREEN, WID_BRAS_MATRIX_SCROLL),
1578                                         EndContainer(),
1579                                 EndContainer(),
1580                         EndContainer(),
1581                 EndContainer(),
1582                 NWidget(NWID_HORIZONTAL),
1583                         NWidget(WWT_EMPTY, INVALID_COLOUR, WID_BRAS_COVERAGE_TEXTS), SetFill(1, 1), SetResize(1, 0),
1584                         NWidget(NWID_SELECTION, INVALID_COLOUR, WID_BRAS_SHOW_NEWST_RESIZE),
1585                                 NWidget(NWID_VERTICAL),
1586                                         NWidget(WWT_PANEL, COLOUR_DARK_GREEN), SetFill(0, 1), EndContainer(),
1587                                         NWidget(WWT_RESIZEBOX, COLOUR_DARK_GREEN),
1588                                 EndContainer(),
1589                         EndContainer(),
1590                 EndContainer(),
1591         EndContainer(),
1592 };
1593
1594 /** High level window description of the station-build window (default & newGRF) */
1595 static WindowDesc _station_builder_desc(
1596         WDP_AUTO, "build_station_rail", 350, 0,
1597         WC_BUILD_STATION, WC_BUILD_TOOLBAR,
1598         WDF_CONSTRUCTION,
1599         _nested_station_builder_widgets, lengthof(_nested_station_builder_widgets)
1600 );
1601
1602 /** Open station build window */
1603 static void ShowStationBuilder(Window *parent)
1604 {
1605         bool newstations = StationClass::GetClassCount() > 2 || StationClass::Get(STAT_CLASS_DFLT)->GetSpecCount() != 1;
1606         new BuildRailStationWindow(&_station_builder_desc, parent, newstations);
1607 }
1608
1609 struct BuildSignalWindow : public PickerWindowBase {
1610 private:
1611         Dimension sig_sprite_size;     ///< Maximum size of signal GUI sprites.
1612         int sig_sprite_bottom_offset;  ///< Maximum extent of signal GUI sprite from reference point towards bottom.
1613
1614         /**
1615          * Draw dynamic a signal-sprite in a button in the signal GUI
1616          * Draw the sprite +1px to the right and down if the button is lowered
1617          *
1618          * @param widget_index index of this widget in the window
1619          * @param image        the sprite to draw
1620          */
1621         void DrawSignalSprite(byte widget_index, SpriteID image) const
1622         {
1623                 Point offset;
1624                 Dimension sprite_size = GetSpriteSize(image, &offset);
1625                 const NWidgetBase *widget = this->GetWidget<NWidgetBase>(widget_index);
1626                 int x = widget->pos_x - offset.x +
1627                                 (widget->current_x - sprite_size.width + offset.x) / 2;  // centered
1628                 int y = widget->pos_y - sig_sprite_bottom_offset + WD_IMGBTN_TOP +
1629                                 (widget->current_y - WD_IMGBTN_TOP - WD_IMGBTN_BOTTOM + sig_sprite_size.height) / 2; // aligned to bottom
1630
1631                 DrawSprite(image, PAL_NONE,
1632                                 x + this->IsWidgetLowered(widget_index),
1633                                 y + this->IsWidgetLowered(widget_index));
1634         }
1635
1636 public:
1637         BuildSignalWindow(WindowDesc *desc, Window *parent) : PickerWindowBase(desc, parent)
1638         {
1639                 this->InitNested(TRANSPORT_RAIL);
1640                 this->OnInvalidateData();
1641         }
1642
1643         ~BuildSignalWindow()
1644         {
1645                 _convert_signal_button = false;
1646                 _trace_restrict_button = false;
1647         }
1648
1649         virtual void OnInit()
1650         {
1651                 /* Calculate maximum signal sprite size. */
1652                 this->sig_sprite_size.width = 0;
1653                 this->sig_sprite_size.height = 0;
1654                 this->sig_sprite_bottom_offset = 0;
1655                 const RailtypeInfo *rti = GetRailTypeInfo(_cur_railtype);
1656                 for (uint type = SIGTYPE_NORMAL; type < SIGTYPE_END; type++) {
1657                         for (uint variant = SIG_ELECTRIC; variant <= SIG_SEMAPHORE; variant++) {
1658                                 for (uint lowered = 0; lowered < 2; lowered++) {
1659                                         Point offset;
1660                                         Dimension sprite_size = GetSpriteSize(rti->gui_sprites.signals[type][variant][lowered], &offset);
1661                                         this->sig_sprite_bottom_offset = max<int>(this->sig_sprite_bottom_offset, sprite_size.height);
1662                                         this->sig_sprite_size.width = max<int>(this->sig_sprite_size.width, sprite_size.width - offset.x);
1663                                         this->sig_sprite_size.height = max<int>(this->sig_sprite_size.height, sprite_size.height - offset.y);
1664                                 }
1665                         }
1666                 }
1667         }
1668
1669         virtual void UpdateWidgetSize(int widget, Dimension *size, const Dimension &padding, Dimension *fill, Dimension *resize)
1670         {
1671                 if (widget == WID_BS_DRAG_SIGNALS_DENSITY_LABEL) {
1672                         /* Two digits for signals density. */
1673                         size->width = max(size->width, 2 * GetDigitWidth() + padding.width + WD_FRAMERECT_LEFT + WD_FRAMERECT_RIGHT);
1674                 } else if (IsInsideMM(widget, WID_BS_SEMAPHORE_NORM, WID_BS_ELECTRIC_PBS_OWAY + 1)) {
1675                         size->width = max(size->width, this->sig_sprite_size.width + WD_IMGBTN_LEFT + WD_IMGBTN_RIGHT);
1676                         size->height = max(size->height, this->sig_sprite_size.height + WD_IMGBTN_TOP + WD_IMGBTN_BOTTOM);
1677                 }
1678         }
1679
1680         virtual void SetStringParameters(int widget) const
1681         {
1682                 switch (widget) {
1683                         case WID_BS_DRAG_SIGNALS_DENSITY_LABEL:
1684                                 SetDParam(0, _settings_client.gui.drag_signals_density);
1685                                 break;
1686                 }
1687         }
1688
1689         virtual void DrawWidget(const Rect &r, int widget) const
1690         {
1691                 if (IsInsideMM(widget, WID_BS_SEMAPHORE_NORM, WID_BS_ELECTRIC_LOGIC + 1)) {
1692                         /* Extract signal from widget number. */
1693                         int type = (widget - WID_BS_SEMAPHORE_NORM) % SIGTYPE_END;
1694                         int var = SIG_SEMAPHORE - (widget - WID_BS_SEMAPHORE_NORM) / SIGTYPE_END; // SignalVariant order is reversed compared to the widgets.
1695                         SpriteID sprite = GetRailTypeInfo(_cur_railtype)->gui_sprites.signals[type][var][this->IsWidgetLowered(widget)];
1696
1697                         this->DrawSignalSprite(widget, sprite);
1698                 }
1699         }
1700
1701         virtual void OnClick(Point pt, int widget, int click_count)
1702         {
1703                 switch (widget) {
1704                         case WID_BS_SEMAPHORE_NORM:
1705                         case WID_BS_SEMAPHORE_ENTRY:
1706                         case WID_BS_SEMAPHORE_EXIT:
1707                         case WID_BS_SEMAPHORE_COMBO:
1708                         case WID_BS_SEMAPHORE_PBS:
1709                         case WID_BS_SEMAPHORE_PBS_OWAY:
1710                         case WID_BS_SEMAPHORE_LOGIC:
1711                         case WID_BS_ELECTRIC_NORM:
1712                         case WID_BS_ELECTRIC_ENTRY:
1713                         case WID_BS_ELECTRIC_EXIT:
1714                         case WID_BS_ELECTRIC_COMBO:
1715                         case WID_BS_ELECTRIC_PBS:
1716                         case WID_BS_ELECTRIC_PBS_OWAY:
1717                         case WID_BS_ELECTRIC_LOGIC:
1718                                 this->RaiseWidget((_cur_signal_variant == SIG_ELECTRIC ? WID_BS_ELECTRIC_NORM : WID_BS_SEMAPHORE_NORM) + _cur_signal_type);
1719
1720                                 _cur_signal_type = (SignalType)((uint)((widget - WID_BS_SEMAPHORE_NORM) % (SIGTYPE_LAST + 1)));
1721                                 _cur_signal_variant = widget >= WID_BS_ELECTRIC_NORM ? SIG_ELECTRIC : SIG_SEMAPHORE;
1722
1723                                 /* If 'remove' button of rail build toolbar is active, disable it. */
1724                                 if (_remove_button_clicked) {
1725                                         Window *w = FindWindowById(WC_BUILD_TOOLBAR, TRANSPORT_RAIL);
1726                                         if (w != nullptr) ToggleRailButton_Remove(w);
1727                                 }
1728
1729                                 break;
1730
1731                         case WID_BS_CONVERT:
1732                                 _convert_signal_button = !_convert_signal_button;
1733                                 if (_convert_signal_button) _trace_restrict_button = false;
1734                                 break;
1735
1736                         case WID_BS_TRACE_RESTRICT:
1737                                 _trace_restrict_button = !_trace_restrict_button;
1738                                 if (_trace_restrict_button) _convert_signal_button = false;
1739                                 break;
1740
1741                         case WID_BS_DRAG_SIGNALS_DENSITY_DECREASE:
1742                                 if (_settings_client.gui.drag_signals_density > 1) {
1743                                         _settings_client.gui.drag_signals_density--;
1744                                         SetWindowDirty(WC_GAME_OPTIONS, WN_GAME_OPTIONS_GAME_SETTINGS);
1745                                 }
1746                                 break;
1747
1748                         case WID_BS_DRAG_SIGNALS_DENSITY_INCREASE:
1749                                 if (_settings_client.gui.drag_signals_density < 20) {
1750                                         _settings_client.gui.drag_signals_density++;
1751                                         SetWindowDirty(WC_GAME_OPTIONS, WN_GAME_OPTIONS_GAME_SETTINGS);
1752                                 }
1753                                 break;
1754
1755                         default: break;
1756                 }
1757
1758                 this->InvalidateData();
1759         }
1760
1761         /**
1762          * Some data on this window has become invalid.
1763          * @param data Information about the changed data.
1764          * @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.
1765          */
1766         virtual void OnInvalidateData(int data = 0, bool gui_scope = true)
1767         {
1768                 if (!gui_scope) return;
1769                 this->LowerWidget((_cur_signal_variant == SIG_ELECTRIC ? WID_BS_ELECTRIC_NORM : WID_BS_SEMAPHORE_NORM) + _cur_signal_type);
1770
1771                 this->SetWidgetLoweredState(WID_BS_CONVERT, _convert_signal_button);
1772                 this->SetWidgetLoweredState(WID_BS_TRACE_RESTRICT, _trace_restrict_button);
1773
1774                 this->SetWidgetDisabledState(WID_BS_DRAG_SIGNALS_DENSITY_DECREASE, _settings_client.gui.drag_signals_density == 1);
1775                 this->SetWidgetDisabledState(WID_BS_DRAG_SIGNALS_DENSITY_INCREASE, _settings_client.gui.drag_signals_density == 20);
1776         }
1777 };
1778
1779 /** Nested widget definition of the build signal window */
1780 static const NWidgetPart _nested_signal_builder_widgets[] = {
1781         NWidget(NWID_HORIZONTAL),
1782                 NWidget(WWT_CLOSEBOX, COLOUR_DARK_GREEN),
1783                 NWidget(WWT_CAPTION, COLOUR_DARK_GREEN), SetDataTip(STR_BUILD_SIGNAL_CAPTION, STR_TOOLTIP_WINDOW_TITLE_DRAG_THIS),
1784         EndContainer(),
1785         NWidget(NWID_VERTICAL, NC_EQUALSIZE),
1786                 NWidget(NWID_HORIZONTAL, NC_EQUALSIZE),
1787                         NWidget(WWT_PANEL, COLOUR_DARK_GREEN, WID_BS_SEMAPHORE_NORM), SetDataTip(STR_NULL, STR_BUILD_SIGNAL_SEMAPHORE_NORM_TOOLTIP), EndContainer(), SetFill(1, 1),
1788                         NWidget(WWT_PANEL, COLOUR_DARK_GREEN, WID_BS_SEMAPHORE_ENTRY), SetDataTip(STR_NULL, STR_BUILD_SIGNAL_SEMAPHORE_ENTRY_TOOLTIP), EndContainer(), SetFill(1, 1),
1789                         NWidget(WWT_PANEL, COLOUR_DARK_GREEN, WID_BS_SEMAPHORE_EXIT), SetDataTip(STR_NULL, STR_BUILD_SIGNAL_SEMAPHORE_EXIT_TOOLTIP), EndContainer(), SetFill(1, 1),
1790                         NWidget(WWT_PANEL, COLOUR_DARK_GREEN, WID_BS_SEMAPHORE_COMBO), SetDataTip(STR_NULL, STR_BUILD_SIGNAL_SEMAPHORE_COMBO_TOOLTIP), EndContainer(), SetFill(1, 1),
1791                         NWidget(WWT_PANEL, COLOUR_DARK_GREEN, WID_BS_SEMAPHORE_PBS), SetDataTip(STR_NULL, STR_BUILD_SIGNAL_SEMAPHORE_PBS_TOOLTIP), EndContainer(), SetFill(1, 1),
1792                         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),
1793                         NWidget(WWT_PANEL, COLOUR_DARK_GREEN, WID_BS_SEMAPHORE_LOGIC), SetDataTip(STR_NULL, STR_BUILD_SIGNAL_SEMAPHORE_LOGIC_TOOLTIP), EndContainer(), SetFill(1, 1),
1794                         NWidget(WWT_IMGBTN, COLOUR_DARK_GREEN, WID_BS_CONVERT), SetDataTip(SPR_IMG_SIGNAL_CONVERT, STR_BUILD_SIGNAL_CONVERT_TOOLTIP), SetFill(1, 1),
1795                         NWidget(WWT_IMGBTN, COLOUR_DARK_GREEN, WID_BS_TRACE_RESTRICT), SetDataTip(SPR_IMG_SETTINGS, STR_TRACE_RESTRICT_SIGNAL_GUI_TOOLTIP), SetFill(1, 1),
1796                 EndContainer(),
1797                 NWidget(NWID_HORIZONTAL, NC_EQUALSIZE),
1798                         NWidget(WWT_PANEL, COLOUR_DARK_GREEN, WID_BS_ELECTRIC_NORM), SetDataTip(STR_NULL, STR_BUILD_SIGNAL_ELECTRIC_NORM_TOOLTIP), EndContainer(), SetFill(1, 1),
1799                         NWidget(WWT_PANEL, COLOUR_DARK_GREEN, WID_BS_ELECTRIC_ENTRY), SetDataTip(STR_NULL, STR_BUILD_SIGNAL_ELECTRIC_ENTRY_TOOLTIP), EndContainer(), SetFill(1, 1),
1800                         NWidget(WWT_PANEL, COLOUR_DARK_GREEN, WID_BS_ELECTRIC_EXIT), SetDataTip(STR_NULL, STR_BUILD_SIGNAL_ELECTRIC_EXIT_TOOLTIP), EndContainer(), SetFill(1, 1),
1801                         NWidget(WWT_PANEL, COLOUR_DARK_GREEN, WID_BS_ELECTRIC_COMBO), SetDataTip(STR_NULL, STR_BUILD_SIGNAL_ELECTRIC_COMBO_TOOLTIP), EndContainer(), SetFill(1, 1),
1802                         NWidget(WWT_PANEL, COLOUR_DARK_GREEN, WID_BS_ELECTRIC_PBS), SetDataTip(STR_NULL, STR_BUILD_SIGNAL_ELECTRIC_PBS_TOOLTIP), EndContainer(), SetFill(1, 1),
1803                         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),
1804                         NWidget(WWT_PANEL, COLOUR_DARK_GREEN, WID_BS_ELECTRIC_LOGIC), SetDataTip(STR_NULL, STR_BUILD_SIGNAL_ELECTRIC_LOGIC_TOOLTIP), EndContainer(), SetFill(1, 1),
1805                         NWidget(WWT_PANEL, COLOUR_DARK_GREEN), SetDataTip(STR_NULL, STR_BUILD_SIGNAL_DRAG_SIGNALS_DENSITY_TOOLTIP), SetFill(1, 1),
1806                                 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),
1807                                 NWidget(NWID_HORIZONTAL), SetPIP(2, 0, 2),
1808                                         NWidget(NWID_SPACER), SetFill(1, 0),
1809                                         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),
1810                                         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),
1811                                         NWidget(NWID_SPACER), SetFill(1, 0),
1812                                 EndContainer(),
1813                                 NWidget(NWID_SPACER), SetMinimalSize(0, 2), SetFill(1, 0),
1814                         EndContainer(),
1815                         NWidget(WWT_PANEL, COLOUR_DARK_GREEN), EndContainer(), SetFill(1, 1),
1816                 EndContainer(),
1817         EndContainer(),
1818 };
1819
1820 /** Signal selection window description */
1821 static WindowDesc _signal_builder_desc(
1822         WDP_AUTO, "build_signal", 0, 0,
1823         WC_BUILD_SIGNAL, WC_BUILD_TOOLBAR,
1824         WDF_CONSTRUCTION,
1825         _nested_signal_builder_widgets, lengthof(_nested_signal_builder_widgets)
1826 );
1827
1828 /**
1829  * Open the signal selection window
1830  */
1831 static void ShowSignalBuilder(Window *parent)
1832 {
1833         new BuildSignalWindow(&_signal_builder_desc, parent);
1834 }
1835
1836 struct BuildRailDepotWindow : public PickerWindowBase {
1837         BuildRailDepotWindow(WindowDesc *desc, Window *parent) : PickerWindowBase(desc, parent)
1838         {
1839                 this->InitNested(TRANSPORT_RAIL);
1840                 this->LowerWidget(_build_depot_direction + WID_BRAD_DEPOT_NE);
1841         }
1842
1843         virtual void UpdateWidgetSize(int widget, Dimension *size, const Dimension &padding, Dimension *fill, Dimension *resize)
1844         {
1845                 if (!IsInsideMM(widget, WID_BRAD_DEPOT_NE, WID_BRAD_DEPOT_NW + 1)) return;
1846
1847                 size->width  = ScaleGUITrad(64) + 2;
1848                 size->height = ScaleGUITrad(48) + 2;
1849         }
1850
1851         virtual void DrawWidget(const Rect &r, int widget) const
1852         {
1853                 if (!IsInsideMM(widget, WID_BRAD_DEPOT_NE, WID_BRAD_DEPOT_NW + 1)) return;
1854
1855                 DrawTrainDepotSprite(r.left + 1 + ScaleGUITrad(31), r.bottom - ScaleGUITrad(31), widget - WID_BRAD_DEPOT_NE + DIAGDIR_NE, _cur_railtype);
1856         }
1857
1858         virtual void OnClick(Point pt, int widget, int click_count)
1859         {
1860                 switch (widget) {
1861                         case WID_BRAD_DEPOT_NE:
1862                         case WID_BRAD_DEPOT_SE:
1863                         case WID_BRAD_DEPOT_SW:
1864                         case WID_BRAD_DEPOT_NW:
1865                                 this->RaiseWidget(_build_depot_direction + WID_BRAD_DEPOT_NE);
1866                                 _build_depot_direction = (DiagDirection)(widget - WID_BRAD_DEPOT_NE);
1867                                 this->LowerWidget(_build_depot_direction + WID_BRAD_DEPOT_NE);
1868                                 if (_settings_client.sound.click_beep) SndPlayFx(SND_15_BEEP);
1869                                 this->SetDirty();
1870                                 break;
1871                 }
1872         }
1873 };
1874
1875 /** Nested widget definition of the build rail depot window */
1876 static const NWidgetPart _nested_build_depot_widgets[] = {
1877         NWidget(NWID_HORIZONTAL),
1878                 NWidget(WWT_CLOSEBOX, COLOUR_DARK_GREEN),
1879                 NWidget(WWT_CAPTION, COLOUR_DARK_GREEN), SetDataTip(STR_BUILD_DEPOT_TRAIN_ORIENTATION_CAPTION, STR_TOOLTIP_WINDOW_TITLE_DRAG_THIS),
1880         EndContainer(),
1881         NWidget(WWT_PANEL, COLOUR_DARK_GREEN),
1882                 NWidget(NWID_SPACER), SetMinimalSize(0, 3),
1883                 NWidget(NWID_HORIZONTAL_LTR),
1884                         NWidget(NWID_SPACER), SetMinimalSize(3, 0), SetFill(1, 0),
1885                         NWidget(NWID_VERTICAL),
1886                                 NWidget(WWT_PANEL, COLOUR_GREY, WID_BRAD_DEPOT_NW), SetMinimalSize(66, 50), SetDataTip(0x0, STR_BUILD_DEPOT_TRAIN_ORIENTATION_TOOLTIP),
1887                                 EndContainer(),
1888                                 NWidget(NWID_SPACER), SetMinimalSize(0, 2),
1889                                 NWidget(WWT_PANEL, COLOUR_GREY, WID_BRAD_DEPOT_SW), SetMinimalSize(66, 50), SetDataTip(0x0, STR_BUILD_DEPOT_TRAIN_ORIENTATION_TOOLTIP),
1890                                 EndContainer(),
1891                         EndContainer(),
1892                         NWidget(NWID_SPACER), SetMinimalSize(2, 0),
1893                         NWidget(NWID_VERTICAL),
1894                                 NWidget(WWT_PANEL, COLOUR_GREY, WID_BRAD_DEPOT_NE), SetMinimalSize(66, 50), SetDataTip(0x0, STR_BUILD_DEPOT_TRAIN_ORIENTATION_TOOLTIP),
1895                                 EndContainer(),
1896                                 NWidget(NWID_SPACER), SetMinimalSize(0, 2),
1897                                 NWidget(WWT_PANEL, COLOUR_GREY, WID_BRAD_DEPOT_SE), SetMinimalSize(66, 50), SetDataTip(0x0, STR_BUILD_DEPOT_TRAIN_ORIENTATION_TOOLTIP),
1898                                 EndContainer(),
1899                         EndContainer(),
1900                         NWidget(NWID_SPACER), SetMinimalSize(3, 0), SetFill(1, 0),
1901                 EndContainer(),
1902                 NWidget(NWID_SPACER), SetMinimalSize(0, 3),
1903         EndContainer(),
1904 };
1905
1906 static WindowDesc _build_depot_desc(
1907         WDP_AUTO, nullptr, 0, 0,
1908         WC_BUILD_DEPOT, WC_BUILD_TOOLBAR,
1909         WDF_CONSTRUCTION,
1910         _nested_build_depot_widgets, lengthof(_nested_build_depot_widgets)
1911 );
1912
1913 static void ShowBuildTrainDepotPicker(Window *parent)
1914 {
1915         new BuildRailDepotWindow(&_build_depot_desc, parent);
1916 }
1917
1918 struct BuildRailWaypointWindow : PickerWindowBase {
1919         BuildRailWaypointWindow(WindowDesc *desc, Window *parent) : PickerWindowBase(desc, parent)
1920         {
1921                 this->CreateNestedTree();
1922
1923                 NWidgetMatrix *matrix = this->GetWidget<NWidgetMatrix>(WID_BRW_WAYPOINT_MATRIX);
1924                 matrix->SetScrollbar(this->GetScrollbar(WID_BRW_SCROLL));
1925
1926                 this->FinishInitNested(TRANSPORT_RAIL);
1927
1928                 matrix->SetCount(_waypoint_count);
1929                 matrix->SetClicked(_cur_waypoint_type);
1930         }
1931
1932         virtual void UpdateWidgetSize(int widget, Dimension *size, const Dimension &padding, Dimension *fill, Dimension *resize)
1933         {
1934                 switch (widget) {
1935                         case WID_BRW_WAYPOINT_MATRIX:
1936                                 /* Three blobs high and wide. */
1937                                 size->width  += resize->width  * 2;
1938                                 size->height += resize->height * 2;
1939
1940                                 /* Resizing in X direction only at blob size, but at pixel level in Y. */
1941                                 resize->height = 1;
1942                                 break;
1943
1944                         case WID_BRW_WAYPOINT:
1945                                 size->width  = ScaleGUITrad(64) + 2;
1946                                 size->height = ScaleGUITrad(58) + 2;
1947                                 break;
1948                 }
1949         }
1950
1951         virtual void DrawWidget(const Rect &r, int widget) const
1952         {
1953                 switch (GB(widget, 0, 16)) {
1954                         case WID_BRW_WAYPOINT: {
1955                                 byte type = GB(widget, 16, 16);
1956                                 const StationSpec *statspec = StationClass::Get(STAT_CLASS_WAYP)->GetSpec(type);
1957                                 DrawWaypointSprite(r.left + 1 + ScaleGUITrad(31), r.bottom - ScaleGUITrad(31), type, _cur_railtype);
1958
1959                                 if (!IsStationAvailable(statspec)) {
1960                                         GfxFillRect(r.left + 1, r.top + 1, r.right - 1, r.bottom - 1, PC_BLACK, FILLRECT_CHECKER);
1961                                 }
1962                         }
1963                 }
1964         }
1965
1966         virtual void OnClick(Point pt, int widget, int click_count)
1967         {
1968                 switch (GB(widget, 0, 16)) {
1969                         case WID_BRW_WAYPOINT: {
1970                                 byte type = GB(widget, 16, 16);
1971                                 this->GetWidget<NWidgetMatrix>(WID_BRW_WAYPOINT_MATRIX)->SetClicked(_cur_waypoint_type);
1972
1973                                 /* Check station availability callback */
1974                                 const StationSpec *statspec = StationClass::Get(STAT_CLASS_WAYP)->GetSpec(type);
1975                                 if (!IsStationAvailable(statspec)) return;
1976
1977                                 _cur_waypoint_type = type;
1978                                 this->GetWidget<NWidgetMatrix>(WID_BRW_WAYPOINT_MATRIX)->SetClicked(_cur_waypoint_type);
1979                                 if (_settings_client.sound.click_beep) SndPlayFx(SND_15_BEEP);
1980                                 this->SetDirty();
1981                                 break;
1982                         }
1983                 }
1984         }
1985 };
1986
1987 /** Nested widget definition for the build NewGRF rail waypoint window */
1988 static const NWidgetPart _nested_build_waypoint_widgets[] = {
1989         NWidget(NWID_HORIZONTAL),
1990                 NWidget(WWT_CLOSEBOX, COLOUR_DARK_GREEN),
1991                 NWidget(WWT_CAPTION, COLOUR_DARK_GREEN), SetDataTip(STR_WAYPOINT_CAPTION, STR_TOOLTIP_WINDOW_TITLE_DRAG_THIS),
1992                 NWidget(WWT_DEFSIZEBOX, COLOUR_DARK_GREEN),
1993         EndContainer(),
1994         NWidget(NWID_HORIZONTAL),
1995                 NWidget(NWID_MATRIX, COLOUR_DARK_GREEN, WID_BRW_WAYPOINT_MATRIX), SetPIP(3, 2, 3), SetScrollbar(WID_BRW_SCROLL),
1996                         NWidget(WWT_PANEL, COLOUR_DARK_GREEN, WID_BRW_WAYPOINT), SetMinimalSize(66, 60), SetDataTip(0x0, STR_WAYPOINT_GRAPHICS_TOOLTIP), SetScrollbar(WID_BRW_SCROLL), EndContainer(),
1997                 EndContainer(),
1998                 NWidget(NWID_VERTICAL),
1999                         NWidget(NWID_VSCROLLBAR, COLOUR_DARK_GREEN, WID_BRW_SCROLL),
2000                         NWidget(WWT_RESIZEBOX, COLOUR_DARK_GREEN),
2001                 EndContainer(),
2002         EndContainer(),
2003 };
2004
2005 static WindowDesc _build_waypoint_desc(
2006         WDP_AUTO, "build_waypoint", 0, 0,
2007         WC_BUILD_WAYPOINT, WC_BUILD_TOOLBAR,
2008         WDF_CONSTRUCTION,
2009         _nested_build_waypoint_widgets, lengthof(_nested_build_waypoint_widgets)
2010 );
2011
2012 static void ShowBuildWaypointPicker(Window *parent)
2013 {
2014         new BuildRailWaypointWindow(&_build_waypoint_desc, parent);
2015 }
2016
2017 /**
2018  * Initialize rail building GUI settings
2019  */
2020 void InitializeRailGui()
2021 {
2022         _build_depot_direction = DIAGDIR_NW;
2023 }
2024
2025 /**
2026  * Re-initialize rail-build toolbar after toggling support for electric trains
2027  * @param disable Boolean whether electric trains are disabled (removed from the game)
2028  */
2029 void ReinitGuiAfterToggleElrail(bool disable)
2030 {
2031         extern RailType _last_built_railtype;
2032         if (disable && _last_built_railtype == RAILTYPE_ELECTRIC) {
2033                 _last_built_railtype = _cur_railtype = RAILTYPE_RAIL;
2034                 BuildRailToolbarWindow *w = dynamic_cast<BuildRailToolbarWindow *>(FindWindowById(WC_BUILD_TOOLBAR, TRANSPORT_RAIL));
2035                 if (w != nullptr) w->ModifyRailType(_cur_railtype);
2036         }
2037         MarkWholeScreenDirty();
2038 }
2039
2040 /** Set the initial (default) railtype to use */
2041 static void SetDefaultRailGui()
2042 {
2043         if (_local_company == COMPANY_SPECTATOR || !Company::IsValidID(_local_company)) return;
2044
2045         extern RailType _last_built_railtype;
2046         RailType rt = (RailType)(_settings_client.gui.default_rail_type + RAILTYPE_END);
2047         if (rt == DEF_RAILTYPE_MOST_USED) {
2048                 /* Find the most used rail type */
2049                 RailType count[RAILTYPE_END];
2050                 memset(count, 0, sizeof(count));
2051                 for (TileIndex t = 0; t < MapSize(); t++) {
2052                         if (IsTileType(t, MP_RAILWAY) || IsLevelCrossingTile(t) || HasStationTileRail(t) ||
2053                                         (IsTileType(t, MP_TUNNELBRIDGE) && GetTunnelBridgeTransportType(t) == TRANSPORT_RAIL)) {
2054                                 count[GetRailType(t)]++;
2055                         }
2056                 }
2057
2058                 rt = RAILTYPE_RAIL;
2059                 for (RailType r = RAILTYPE_ELECTRIC; r < RAILTYPE_END; r++) {
2060                         if (count[r] >= count[rt]) rt = r;
2061                 }
2062
2063                 /* No rail, just get the first available one */
2064                 if (count[rt] == 0) rt = DEF_RAILTYPE_FIRST;
2065         }
2066         switch (rt) {
2067                 case DEF_RAILTYPE_FIRST:
2068                         rt = RAILTYPE_RAIL;
2069                         while (rt < RAILTYPE_END && !HasRailtypeAvail(_local_company, rt)) rt++;
2070                         break;
2071
2072                 case DEF_RAILTYPE_LAST:
2073                         rt = GetBestRailtype(_local_company);
2074                         break;
2075
2076                 default:
2077                         break;
2078         }
2079
2080         _last_built_railtype = _cur_railtype = rt;
2081         BuildRailToolbarWindow *w = dynamic_cast<BuildRailToolbarWindow *>(FindWindowById(WC_BUILD_TOOLBAR, TRANSPORT_RAIL));
2082         if (w != nullptr) w->ModifyRailType(_cur_railtype);
2083 }
2084
2085 /**
2086  * Updates the current signal variant used in the signal GUI
2087  * to the one adequate to current year.
2088  * @param p needed to be called when a setting changes
2089  * @return success, needed for settings
2090  */
2091 bool ResetSignalVariant(int32 p)
2092 {
2093         SignalVariant new_variant = (_cur_year < _settings_client.gui.semaphore_build_before ? SIG_SEMAPHORE : SIG_ELECTRIC);
2094
2095         if (new_variant != _cur_signal_variant) {
2096                 Window *w = FindWindowById(WC_BUILD_SIGNAL, 0);
2097                 if (w != nullptr) {
2098                         w->SetDirty();
2099                         w->RaiseWidget((_cur_signal_variant == SIG_ELECTRIC ? WID_BS_ELECTRIC_NORM : WID_BS_SEMAPHORE_NORM) + _cur_signal_type);
2100                 }
2101                 _cur_signal_variant = new_variant;
2102         }
2103
2104         return true;
2105 }
2106
2107 /**
2108  * Resets the rail GUI - sets default railtype to build
2109  * and resets the signal GUI
2110  */
2111 void InitializeRailGUI()
2112 {
2113         SetDefaultRailGui();
2114
2115         _convert_signal_button = false;
2116         _trace_restrict_button = false;
2117         _cur_signal_type = _default_signal_type[_settings_client.gui.default_signal_type];
2118         ResetSignalVariant();
2119 }
2120
2121 /**
2122  * Create a drop down list for all the rail types of the local company.
2123  * @param for_replacement Whether this list is for the replacement window.
2124  * @param all_option Whether to add an 'all types' item.
2125  * @return The populated and sorted #DropDownList.
2126  */
2127 DropDownList *GetRailTypeDropDownList(bool for_replacement, bool all_option)
2128 {
2129         RailTypes used_railtypes = RAILTYPES_NONE;
2130
2131         /* Find the used railtypes. */
2132         Engine *e;
2133         FOR_ALL_ENGINES_OF_TYPE(e, VEH_TRAIN) {
2134                 if (!HasBit(e->info.climates, _settings_game.game_creation.landscape)) continue;
2135
2136                 used_railtypes |= GetRailTypeInfo(e->u.rail.railtype)->introduces_railtypes;
2137         }
2138
2139         /* Get the date introduced railtypes as well. */
2140         used_railtypes = AddDateIntroducedRailTypes(used_railtypes, MAX_DAY);
2141
2142         const Company *c = Company::Get(_local_company);
2143         DropDownList *list = new DropDownList();
2144
2145         if (all_option) {
2146                 DropDownListStringItem *item = new DropDownListStringItem(STR_REPLACE_ALL_RAILTYPE, INVALID_RAILTYPE, false);
2147                 *list->Append() = item;
2148         }
2149
2150         RailType rt;
2151         FOR_ALL_SORTED_RAILTYPES(rt) {
2152                 /* If it's not used ever, don't show it to the user. */
2153                 if (!HasBit(used_railtypes, rt)) continue;
2154
2155                 const RailtypeInfo *rti = GetRailTypeInfo(rt);
2156
2157                 StringID str = for_replacement ? rti->strings.replace_text : (rti->max_speed > 0 ? STR_TOOLBAR_RAILTYPE_VELOCITY : STR_JUST_STRING);
2158                 DropDownListParamStringItem *item = new DropDownListParamStringItem(str, rt, !HasBit(c->avail_railtypes, rt));
2159                 item->SetParam(0, rti->strings.menu_text);
2160                 item->SetParam(1, rti->max_speed);
2161                 *list->Append() = item;
2162         }
2163
2164         if (list->Length() == 0) {
2165                 /* Empty dropdowns are not allowed */
2166                 *list->Append() = new DropDownListStringItem(STR_NONE, INVALID_RAILTYPE, true);
2167         }
2168
2169         return list;
2170 }