src/rail_gui.cpp

   1 /* $Id$ */
   2
   3 /*
   4  * This file is part of OpenTTD.
   5  * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
   6  * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
   7  * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
   8  */
   9
  10 /** @file rail_gui.cpp %File for dealing with rail construction user interface */
  11
  12 #include "stdafx.h"
  13 #include "gui.h"
  14 #include "window_gui.h"
  15 #include "station_gui.h"
  16 #include "terraform_gui.h"
  17 #include "viewport_func.h"
  18 #include "command_func.h"
  19 #include "waypoint_func.h"
  20 #include "newgrf_station.h"
  21 #include "company_base.h"
  22 #include "strings_func.h"
  23 #include "window_func.h"
  24 #include "date_func.h"
  25 #include "sound_func.h"
  26 #include "company_func.h"
  27 #include "widgets/dropdown_type.h"
  28 #include "tunnelbridge.h"
  29 #include "tilehighlight_func.h"
  30 #include "spritecache.h"
  31 #include "core/geometry_func.hpp"
  32 #include "hotkeys.h"
  33 #include "engine_base.h"
  34 #include "vehicle_func.h"
  35 #include "zoom_func.h"
  36 #include "rail_gui.h"
  37 #include "tile_cmd.h"
  38 #include "station_func.h"
  39 #include "rail.h"
  40 #include "font.h"
  41
  42 #include "map/rail.h"
  43 #include "map/depot.h"
  44 #include "map/bridge.h"
  45
  46 #include "widgets/rail_widget.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 SignalVariant _cur_signal_variant;    ///< set the signal variant (for signal GUI)
  56 static SignalType _cur_signal_type;          ///< set the signal type (for signal GUI)
  57
  58 /* Map the setting: default_signal_type to the corresponding signal type */
  59 static const SignalType _default_signal_type[] = {SIGTYPE_NORMAL, SIGTYPE_PBS, SIGTYPE_PBS_ONEWAY};
  60
  61 struct RailStationGUISettings {
  62         Axis orientation;                 ///< Currently selected rail station orientation
  63
  64         bool newstations;                 ///< Are custom station definitions available?
  65         StationClassID station_class;     ///< Currently selected custom station class (if newstations is \c true )
  66         byte station_type;                ///< %Station type within the currently selected custom station class (if newstations is \c true )
  67         byte station_count;               ///< Number of custom stations (if newstations is \c true )
  68 };
  69 static RailStationGUISettings _railstation; ///< Settings of the station builder GUI
  70
  71
  72 /** Dragging actions in the rail toolbar. */
  73 enum {
  74         DRAG_DEMOLISH_AREA,     ///< Clear area
  75         DRAG_BUILD_BRIDGE,      ///< Bridge placement
  76         DRAG_PLACE_RAIL,        ///< Rail placement
  77         DRAG_BUILD_SIGNALS,     ///< Signal placement
  78         DRAG_STATION,           ///< Station placement/removal
  79         DRAG_BUILD_WAYPOINT_X,  ///< Waypoint placement along AXIS_X
  80         DRAG_BUILD_WAYPOINT_Y,  ///< Waypoint placement along AXIS_Y
  81         DRAG_REMOVE_WAYPOINT,   ///< Waypoint removal
  82         DRAG_CONVERT_RAIL,      ///< Rail conversion
  83 };
  84
  85
  86 static void HandleStationPlacement(TileIndex start, TileIndex end);
  87 static void ShowBuildTrainDepotPicker(Window *parent);
  88 static void ShowBuildWaypointPicker(Window *parent);
  89 static void ShowStationBuilder(Window *parent);
  90 static void ShowSignalBuilder(Window *parent);
  91
  92 /**
  93  * Check whether a station type can be build.
  94  * @return true if building is allowed.
  95  */
  96 static bool IsStationAvailable(const StationSpec *statspec)
  97 {
  98         if (statspec == NULL || !HasBit(statspec->callback_mask, CBM_STATION_AVAIL)) return true;
  99
 100         uint16 cb_res = GetStationCallback (CBID_STATION_AVAILABILITY, 0, 0, statspec, _cur_railtype);
 101         if (cb_res == CALLBACK_FAILED) return true;
 102
 103         return Convert8bitBooleanCallback(statspec->grf_prop.grffile, CBID_STATION_AVAILABILITY, cb_res);
 104 }
 105
 106 void CcPlaySound_SPLAT_RAIL(const CommandCost &result, TileIndex tile, uint32 p1, uint32 p2)
 107 {
 108         if (result.Succeeded() && _settings_client.sound.confirm) SndPlayTileFx(SND_20_SPLAT_RAIL, tile);
 109 }
 110
 111 void CcSingleRail(const CommandCost &result, TileIndex tile, uint32 p1, uint32 p2)
 112 {
 113         if (HasBit(p1, 31)) return;
 114
 115         CcPlaySound_SPLAT_RAIL(result, tile, p1, p2);
 116 }
 117
 118 StringID GetErrBuildSingleRail (TileIndex tile, uint32 p1, uint32 p2, const char *text)
 119 {
 120         return HasBit(p1, 31) ? 0 : STR_ERROR_CAN_T_BUILD_RAILROAD_TRACK;
 121 }
 122
 123 void CcRailDepot(const CommandCost &result, TileIndex tile, uint32 p1, uint32 p2)
 124 {
 125         struct PlaceDepotExtraData {
 126                 DiagDirection dir;   ///< direction to check
 127                 Track         track; ///< track to build
 128         };
 129
 130         static const PlaceDepotExtraData place_depot_extra_data[4][3] = {
 131                 { {DIAGDIR_SE, TRACK_LEFT }, {DIAGDIR_SW, TRACK_X}, {DIAGDIR_NW, TRACK_LOWER} },
 132                 { {DIAGDIR_SW, TRACK_UPPER}, {DIAGDIR_NW, TRACK_Y}, {DIAGDIR_NE, TRACK_LEFT } },
 133                 { {DIAGDIR_SE, TRACK_UPPER}, {DIAGDIR_NE, TRACK_X}, {DIAGDIR_NW, TRACK_RIGHT} },
 134                 { {DIAGDIR_SW, TRACK_RIGHT}, {DIAGDIR_SE, TRACK_Y}, {DIAGDIR_NE, TRACK_LOWER} },
 135         };
 136
 137         if (result.Failed()) return;
 138
 139         DiagDirection dir = (DiagDirection)p2;
 140
 141         if (_settings_client.sound.confirm) SndPlayTileFx(SND_20_SPLAT_RAIL, tile);
 142         if (!_settings_client.gui.persistent_buildingtools) ResetPointerMode();
 143
 144         tile += TileOffsByDiagDir(dir);
 145
 146         if (IsNormalRailTile(tile) && !HasSignalOnTrack(tile, TRACK_UPPER) && !HasSignalOnTrack(tile, TRACK_LOWER)) {
 147                 for (int i = 0; i < 3; i++) {
 148                         if ((GetTrackBits(tile) & DiagdirReachesTracks(place_depot_extra_data[dir][i].dir)) != TRACK_BIT_NONE) {
 149                                 DoCommandP(tile, _cur_railtype | (1 << 31), place_depot_extra_data[dir][i].track, CMD_BUILD_SINGLE_RAIL);
 150                         }
 151                 }
 152         }
 153 }
 154
 155 /**
 156  * Place a rail waypoint.
 157  * @param tile Position to start dragging a waypoint.
 158  */
 159 static void PlaceRail_Waypoint(TileIndex tile)
 160 {
 161         if (_remove_button_clicked) {
 162                 VpStartPlaceSizing(tile, VPM_X_AND_Y, DRAG_REMOVE_WAYPOINT);
 163                 return;
 164         }
 165
 166         switch (GetAxisForNewWaypoint(tile)) {
 167                 case AXIS_X:
 168                         VpStartPlaceSizing (tile, VPM_Y, DRAG_BUILD_WAYPOINT_X);
 169                         break;
 170
 171                 case AXIS_Y:
 172                         VpStartPlaceSizing (tile, VPM_X, DRAG_BUILD_WAYPOINT_Y);
 173                         break;
 174
 175                 default:
 176                         /* Tile where we can't build rail waypoints. This is always going to fail,
 177                          * but provides the user with a proper error message. */
 178                         DoCommandP (tile, 1 << 8 | 1 << 16, STAT_CLASS_WAYP | INVALID_STATION << 16, CMD_BUILD_RAIL_WAYPOINT);
 179                         return;
 180         }
 181
 182         VpSetPlaceSizingLimit (_settings_game.station.station_spread);
 183 }
 184
 185 void CcStation(const CommandCost &result, TileIndex tile, uint32 p1, uint32 p2)
 186 {
 187         if (result.Failed()) return;
 188
 189         if (_settings_client.sound.confirm) SndPlayTileFx(SND_20_SPLAT_RAIL, tile);
 190         /* Only close the station builder window if the default station and non persistent building is chosen. */
 191         if (_railstation.station_class == STAT_CLASS_DFLT && _railstation.station_type == 0 && !_settings_client.gui.persistent_buildingtools) ResetPointerMode();
 192 }
 193
 194 /** Get the only allowed bit, or a default if several are available. */
 195 static inline uint GetSingleAllowedValue (byte disallowed, uint def)
 196 {
 197         /* Sign-extend bit 7. */
 198         uint allowed = (int)(int8)(~disallowed);
 199         return HasExactlyOneBit (allowed) ? (FindFirstBit (allowed) + 1) : def;
 200 }
 201
 202 /**
 203  * Place a rail station.
 204  * @param tile Position to place or start dragging a station.
 205  */
 206 static void PlaceRail_Station(TileIndex tile)
 207 {
 208         if (_remove_button_clicked) {
 209                 VpStartPlaceSizing (tile, VPM_X_AND_Y, DRAG_STATION);
 210                 return;
 211         }
 212
 213         uint w, h;
 214         if (_settings_client.gui.station_dragdrop) {
 215                 const StationSpec *statspec = _railstation.newstations ? StationClass::Get(_railstation.station_class)->GetSpec(_railstation.station_type) : NULL;
 216                 if (statspec == NULL) {
 217                         w = h = 0;
 218                 } else {
 219                         w = GetSingleAllowedValue (statspec->disallowed_platforms, 0);
 220                         h = GetSingleAllowedValue (statspec->disallowed_lengths, 0);
 221                 }
 222
 223                 ViewportPlaceMethod method;
 224                 if (w == 0 || h == 0) {
 225                         if (w != 0) {
 226                                 /* fixed number of tracks */
 227                                 method = _railstation.orientation ? VPM_Y : VPM_X;
 228                         } else if (h != 0) {
 229                                 /* fixed platform length */
 230                                 method = _railstation.orientation ? VPM_X : VPM_Y;
 231                         } else {
 232                                 method = VPM_X_AND_Y;
 233                         }
 234                         VpStartPlaceSizing (tile, method, DRAG_STATION, _settings_game.station.station_spread);
 235                         return;
 236                 }
 237         } else {
 238                 w = _settings_client.gui.station_numtracks;
 239                 h = _settings_client.gui.station_platlength;
 240         }
 241
 242         uint32 p1 = _cur_railtype | _railstation.orientation << 4 | w << 8 | h << 16 | _ctrl_pressed << 24;
 243         uint32 p2 = _railstation.station_class | _railstation.station_type << 8 | INVALID_STATION << 16;
 244
 245         if (!_railstation.orientation) Swap (w, h);
 246
 247         Command cmdcont (tile, p1, p2, CMD_BUILD_RAIL_STATION);
 248         ShowSelectStationIfNeeded (&cmdcont, TileArea (tile, w, h));
 249 }
 250
 251 StringID GetErrBuildSignals (TileIndex tile, uint32 p1, uint32 p2, const char *text)
 252 {
 253         switch (GB(p1, 17, 3)) {
 254                 case SIGNALS_CONVERT:
 255                 case SIGNALS_TOGGLE_VARIANT:
 256                         return STR_ERROR_SIGNAL_CAN_T_CONVERT_SIGNALS_HERE;
 257
 258                 default:
 259                         return STR_ERROR_CAN_T_BUILD_SIGNALS_HERE;
 260         }
 261 }
 262
 263 /**
 264  * Build a new signal or edit/remove a present signal, use CmdBuildSingleSignal() or CmdRemoveSingleSignal() in rail_cmd.cpp
 265  *
 266  * @param tile The tile where the signal will build or edit
 267  */
 268 static void GenericPlaceSignals(TileIndex tile)
 269 {
 270         TrackBits trackbits = TrackStatusToTrackBits(GetTileRailwayStatus(tile));
 271
 272         if (trackbits & TRACK_BIT_VERT) { // N-S direction
 273                 trackbits = (_tile_fract_coords.x <= _tile_fract_coords.y) ? TRACK_BIT_RIGHT : TRACK_BIT_LEFT;
 274         }
 275
 276         if (trackbits & TRACK_BIT_HORZ) { // E-W direction
 277                 trackbits = (_tile_fract_coords.x + _tile_fract_coords.y <= 15) ? TRACK_BIT_UPPER : TRACK_BIT_LOWER;
 278         }
 279
 280         Track track = FindFirstTrack(trackbits);
 281
 282         if (_remove_button_clicked) {
 283                 DoCommandP(tile, track, 0, CMD_REMOVE_SIGNALS);
 284         } else {
 285                 const Window *w = FindWindowById(WC_BUILD_SIGNAL, 0);
 286
 287                 /* Map the setting cycle_signal_types to the allowed signal bitmask. */
 288                 static const uint signal_mask[] = {
 289                         (1 << SIGTYPE_PBS) - 1,
 290                         (1 << SIGTYPE_END) - (1 << SIGTYPE_PBS),
 291                         (1 << SIGTYPE_END) - 1,
 292                 };
 293
 294                 /* various bitstuffed elements for CmdBuildSingleSignal() */
 295                 uint32 p1 = track;
 296
 297                 if (w == NULL) {
 298                         /* signal GUI not used */
 299                         SB(p1, 4, 1, ((_cur_year < _settings_client.gui.semaphore_build_before) ^ _ctrl_pressed) ? SIG_SEMAPHORE : SIG_ELECTRIC);
 300                         SB(p1, 5, 3, _default_signal_type[_settings_client.gui.default_signal_type]);
 301                         SB(p1, 17, 3, _ctrl_pressed ? SIGNALS_CYCLE_TYPE : SIGNALS_BUILD);
 302                 } else if (!_convert_signal_button) {
 303                         /* signal GUI is used, not converting */
 304                         SB(p1, 4, 1, _cur_signal_variant ^ _ctrl_pressed);
 305                         SB(p1, 5, 3, _cur_signal_type);
 306                         SB(p1, 17, 3, _ctrl_pressed ? SIGNALS_CYCLE_TYPE : SIGNALS_BUILD);
 307                 } else {
 308                         /* signal GUI is used, converting */
 309                         SB(p1, 4, 1, _cur_signal_variant ^ _ctrl_pressed);
 310                         SB(p1, 5, 3, _cur_signal_type);
 311                         SB(p1, 17, 3, _ctrl_pressed ? SIGNALS_TOGGLE_VARIANT : SIGNALS_CONVERT);
 312                 }
 313
 314                 DoCommandP(tile, p1, signal_mask[_settings_client.gui.cycle_signal_types], CMD_BUILD_SIGNALS);
 315         }
 316 }
 317
 318 /** Show the bridge building window between a pair of tiles. */
 319 static void HandleBuildRailBridge (TileIndex start_tile, TileIndex end_tile)
 320 {
 321         if (!_settings_client.gui.persistent_buildingtools) ResetPointerMode();
 322         ShowBuildBridgeWindow (start_tile, end_tile, TRANSPORT_RAIL, _cur_railtype);
 323 }
 324
 325 /**
 326  * Toggles state of the Remove button of Build rail toolbar
 327  * @param w window the button belongs to
 328  */
 329 static void ToggleRailButton_Remove(Window *w)
 330 {
 331         DeleteWindowById(WC_SELECT_STATION, 0);
 332         w->ToggleWidgetLoweredState(WID_RAT_REMOVE);
 333         w->SetWidgetDirty(WID_RAT_REMOVE);
 334         _remove_button_clicked = w->IsWidgetLowered(WID_RAT_REMOVE);
 335         SetSelectionRed(_remove_button_clicked);
 336 }
 337
 338 /**
 339  * Updates the Remove button because of Ctrl state change
 340  * @param w window the button belongs to
 341  * @return true iff the remove button was changed
 342  */
 343 static bool RailToolbar_CtrlChanged(Window *w)
 344 {
 345         if (w->IsWidgetDisabled(WID_RAT_REMOVE)) return false;
 346
 347         /* allow ctrl to switch remove mode only for these widgets */
 348         for (uint i = WID_RAT_BUILD_NS; i <= WID_RAT_BUILD_STATION; i++) {
 349                 if ((i <= WID_RAT_AUTORAIL || i >= WID_RAT_BUILD_WAYPOINT) && w->IsWidgetLowered(i)) {
 350                         ToggleRailButton_Remove(w);
 351                         return true;
 352                 }
 353         }
 354
 355         return false;
 356 }
 357
 358
 359 /** Set the selection size for building a station. */
 360 static void SetStationTileSelectSize (void)
 361 {
 362         uint x, y;
 363         if (_settings_client.gui.station_dragdrop) {
 364                 const StationSpec *statspec = _railstation.newstations ? StationClass::Get(_railstation.station_class)->GetSpec(_railstation.station_type) : NULL;
 365                 if (statspec == NULL) {
 366                         x = y = 1;
 367                 } else {
 368                         x = GetSingleAllowedValue (statspec->disallowed_platforms, 1);
 369                         y = GetSingleAllowedValue (statspec->disallowed_lengths, 1);
 370                 }
 371         } else {
 372                 x = _settings_client.gui.station_numtracks;
 373                 y = _settings_client.gui.station_platlength;
 374         }
 375
 376         if (_railstation.orientation == AXIS_X) Swap(x, y);
 377         SetTileSelectSize (x, y);
 378         VpSetPlaceSizingLimit (_settings_game.station.station_spread);
 379 }
 380
 381 /**
 382  * The "remove"-button click proc of the build-rail toolbar.
 383  * @param w Build-rail toolbar window
 384  * @see BuildRailToolbarWindow::OnClick()
 385  */
 386 static void BuildRailClick_Remove(Window *w)
 387 {
 388         if (w->IsWidgetDisabled(WID_RAT_REMOVE)) return;
 389         ToggleRailButton_Remove(w);
 390         if (_settings_client.sound.click_beep) SndPlayFx(SND_15_BEEP);
 391
 392         /* handle station builder */
 393         if (w->IsWidgetLowered(WID_RAT_BUILD_STATION)) {
 394                 if (_remove_button_clicked) {
 395                         /* starting drag & drop remove */
 396                         SetTileSelectSize(1, 1);
 397                         VpSetPlaceSizingLimit (0);
 398                 } else {
 399                         /* starting station build mode */
 400                         SetStationTileSelectSize();
 401                 }
 402         } else if (w->IsWidgetLowered(WID_RAT_BUILD_WAYPOINT)) {
 403                 /* Dragging is different for waypoints when removing,
 404                  * so reset it. */
 405                 VpStopPlaceSizing();
 406         }
 407 }
 408
 409 static void HandleAutodirPlacement (TileIndex start, TileIndex end)
 410 {
 411         Track track = (Track)(_thd.drawstyle & HT_TRACK_MASK); // 0..5
 412         assert (IsValidTrack (track));
 413
 414         if (start == end) { // one-tile case
 415                 DoCommandP (end, _cur_railtype, track,
 416                                 _remove_button_clicked ? CMD_REMOVE_SINGLE_RAIL : CMD_BUILD_SINGLE_RAIL);
 417                 return;
 418         }
 419
 420         DoCommandP (start, end, _cur_railtype | (track << 4),
 421                         _remove_button_clicked ? CMD_REMOVE_RAILROAD_TRACK : CMD_BUILD_RAILROAD_TRACK);
 422 }
 423
 424 /**
 425  * Build new signals or remove signals or (if only one tile marked) edit a signal.
 426  *
 427  * If one tile marked abort and use GenericPlaceSignals()
 428  * else use CmdBuildSingleSignal() or CmdRemoveSingleSignal() in rail_cmd.cpp to build many signals
 429  */
 430 static void HandleAutoSignalPlacement (TileIndex start, TileIndex end)
 431 {
 432         uint32 p2 = GB(_thd.drawstyle, 0, 3); // 0..5
 433
 434         if (start == end) { // one-tile case
 435                 GenericPlaceSignals (end);
 436                 return;
 437         }
 438
 439         const Window *w = FindWindowById(WC_BUILD_SIGNAL, 0);
 440
 441         if (w != NULL) {
 442                 /* signal GUI is used */
 443                 SB(p2,  4, 1, _cur_signal_variant);
 444                 SB(p2,  6, 1, _ctrl_pressed);
 445                 SB(p2,  7, 3, _cur_signal_type);
 446                 SB(p2, 24, 8, _settings_client.gui.drag_signals_density);
 447                 SB(p2, 10, 1, !_settings_client.gui.drag_signals_fixed_distance);
 448         } else {
 449                 SB(p2,  4, 1, (_cur_year < _settings_client.gui.semaphore_build_before ? SIG_SEMAPHORE : SIG_ELECTRIC));
 450                 SB(p2,  6, 1, _ctrl_pressed);
 451                 SB(p2,  7, 3, _default_signal_type[_settings_client.gui.default_signal_type]);
 452                 SB(p2, 24, 8, _settings_client.gui.drag_signals_density);
 453                 SB(p2, 10, 1, !_settings_client.gui.drag_signals_fixed_distance);
 454         }
 455
 456         /* _settings_client.gui.drag_signals_density is given as a parameter such that each user
 457          * in a network game can specify his/her own signal density */
 458         DoCommandP (start, end, p2,
 459                         _remove_button_clicked ? CMD_REMOVE_SIGNAL_TRACK : CMD_BUILD_SIGNAL_TRACK);
 460 }
 461
 462
 463 /** Rail toolbar management class. */
 464 struct BuildRailToolbarWindow : Window {
 465         RailType railtype;    ///< Rail type to build.
 466         int last_user_action; ///< Last started user action.
 467
 468         BuildRailToolbarWindow (const WindowDesc *desc, RailType railtype) :
 469                 Window (desc), railtype ((RailType)0),
 470                 last_user_action (WIDGET_LIST_END)
 471         {
 472                 this->InitNested(TRANSPORT_RAIL);
 473                 this->SetupRailToolbar(railtype);
 474                 this->DisableWidget(WID_RAT_REMOVE);
 475
 476                 if (_settings_client.gui.link_terraform_toolbar) ShowTerraformToolbar(this);
 477         }
 478
 479         void OnDelete (void) FINAL_OVERRIDE
 480         {
 481                 if (_settings_client.gui.link_terraform_toolbar) DeleteWindowById(WC_SCEN_LAND_GEN, 0, false);
 482         }
 483
 484         /**
 485          * Some data on this window has become invalid.
 486          * @param data Information about the changed data.
 487          * @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.
 488          */
 489         virtual void OnInvalidateData(int data = 0, bool gui_scope = true)
 490         {
 491                 if (!gui_scope) return;
 492
 493                 if (!CanBuildVehicleInfrastructure(VEH_TRAIN)) this->Delete();
 494         }
 495
 496         /**
 497          * Configures the rail toolbar for railtype given
 498          * @param railtype the railtype to display
 499          */
 500         void SetupRailToolbar(RailType railtype)
 501         {
 502                 this->railtype = railtype;
 503                 const RailtypeInfo *rti = GetRailTypeInfo(railtype);
 504
 505                 assert(railtype < RAILTYPE_END);
 506                 this->GetWidget<NWidgetCore>(WID_RAT_BUILD_NS)->widget_data     = rti->gui_sprites.build_ns_rail;
 507                 this->GetWidget<NWidgetCore>(WID_RAT_BUILD_X)->widget_data      = rti->gui_sprites.build_x_rail;
 508                 this->GetWidget<NWidgetCore>(WID_RAT_BUILD_EW)->widget_data     = rti->gui_sprites.build_ew_rail;
 509                 this->GetWidget<NWidgetCore>(WID_RAT_BUILD_Y)->widget_data      = rti->gui_sprites.build_y_rail;
 510                 this->GetWidget<NWidgetCore>(WID_RAT_AUTORAIL)->widget_data     = rti->gui_sprites.auto_rail;
 511                 this->GetWidget<NWidgetCore>(WID_RAT_BUILD_DEPOT)->widget_data  = rti->gui_sprites.build_depot;
 512                 this->GetWidget<NWidgetCore>(WID_RAT_CONVERT_RAIL)->widget_data = rti->gui_sprites.convert_rail;
 513                 this->GetWidget<NWidgetCore>(WID_RAT_BUILD_TUNNEL)->widget_data = rti->gui_sprites.build_tunnel;
 514         }
 515
 516         /**
 517          * Switch to another rail type.
 518          * @param railtype New rail type.
 519          */
 520         void ModifyRailType(RailType railtype)
 521         {
 522                 this->SetupRailToolbar(railtype);
 523                 this->ReInit();
 524         }
 525
 526         void UpdateRemoveWidgetStatus(int clicked_widget)
 527         {
 528                 switch (clicked_widget) {
 529                         case WID_RAT_REMOVE:
 530                                 /* If it is the removal button that has been clicked, do nothing,
 531                                  * as it is up to the other buttons to drive removal status */
 532                                 return;
 533
 534                         case WID_RAT_BUILD_NS:
 535                         case WID_RAT_BUILD_X:
 536                         case WID_RAT_BUILD_EW:
 537                         case WID_RAT_BUILD_Y:
 538                         case WID_RAT_AUTORAIL:
 539                         case WID_RAT_BUILD_WAYPOINT:
 540                         case WID_RAT_BUILD_STATION:
 541                         case WID_RAT_BUILD_SIGNALS:
 542                                 /* Removal button is enabled only if the rail/signal/waypoint/station
 543                                  * button is still lowered.  Once raised, it has to be disabled */
 544                                 this->SetWidgetDisabledState(WID_RAT_REMOVE, !this->IsWidgetLowered(clicked_widget));
 545                                 break;
 546
 547                         default:
 548                                 /* When any other buttons than rail/signal/waypoint/station, raise and
 549                                  * disable the removal button */
 550                                 this->DisableWidget(WID_RAT_REMOVE);
 551                                 this->RaiseWidget(WID_RAT_REMOVE);
 552                                 break;
 553                 }
 554         }
 555
 556         virtual void SetStringParameters(int widget) const
 557         {
 558                 if (widget == WID_RAT_CAPTION) {
 559                         const RailtypeInfo *rti = GetRailTypeInfo(this->railtype);
 560                         if (rti->max_speed > 0) {
 561                                 SetDParam(0, STR_TOOLBAR_RAILTYPE_VELOCITY);
 562                                 SetDParam(1, rti->strings.toolbar_caption);
 563                                 SetDParam(2, rti->max_speed);
 564                         } else {
 565                                 SetDParam(0, rti->strings.toolbar_caption);
 566                         }
 567                 }
 568         }
 569
 570         virtual void OnClick(Point pt, int widget, int click_count)
 571         {
 572                 if (widget < WID_RAT_BUILD_NS) return;
 573
 574                 _remove_button_clicked = false;
 575                 switch (widget) {
 576                         case WID_RAT_BUILD_NS:
 577                                 HandlePlacePushButton (this, WID_RAT_BUILD_NS, GetRailTypeInfo(_cur_railtype)->cursor.rail_ns, POINTER_RAIL_V);
 578                                 this->last_user_action = widget;
 579                                 break;
 580
 581                         case WID_RAT_BUILD_X:
 582                                 HandlePlacePushButton (this, WID_RAT_BUILD_X, GetRailTypeInfo(_cur_railtype)->cursor.rail_swne, POINTER_RAIL_X);
 583                                 this->last_user_action = widget;
 584                                 break;
 585
 586                         case WID_RAT_BUILD_EW:
 587                                 HandlePlacePushButton (this, WID_RAT_BUILD_EW, GetRailTypeInfo(_cur_railtype)->cursor.rail_ew, POINTER_RAIL_H);
 588                                 this->last_user_action = widget;
 589                                 break;
 590
 591                         case WID_RAT_BUILD_Y:
 592                                 HandlePlacePushButton (this, WID_RAT_BUILD_Y, GetRailTypeInfo(_cur_railtype)->cursor.rail_nwse, POINTER_RAIL_Y);
 593                                 this->last_user_action = widget;
 594                                 break;
 595
 596                         case WID_RAT_AUTORAIL:
 597                                 HandlePlacePushButton (this, WID_RAT_AUTORAIL, GetRailTypeInfo(_cur_railtype)->cursor.autorail, POINTER_RAIL_AUTO);
 598                                 this->last_user_action = widget;
 599                                 break;
 600
 601                         case WID_RAT_DEMOLISH:
 602                                 HandlePlacePushButton (this, WID_RAT_DEMOLISH, ANIMCURSOR_DEMOLISH, POINTER_TILE);
 603                                 this->last_user_action = widget;
 604                                 break;
 605
 606                         case WID_RAT_BUILD_DEPOT:
 607                                 if (HandlePlacePushButton (this, WID_RAT_BUILD_DEPOT, GetRailTypeInfo(_cur_railtype)->cursor.depot, POINTER_TILE)) {
 608                                         ShowBuildTrainDepotPicker(this);
 609                                         this->last_user_action = widget;
 610                                 }
 611                                 break;
 612
 613                         case WID_RAT_BUILD_WAYPOINT:
 614                                 this->last_user_action = widget;
 615                                 _waypoint_count = StationClass::Get(STAT_CLASS_WAYP)->GetSpecCount();
 616                                 if (HandlePlacePushButton (this, WID_RAT_BUILD_WAYPOINT, SPR_CURSOR_WAYPOINT, POINTER_TILE) && _waypoint_count > 1) {
 617                                         ShowBuildWaypointPicker(this);
 618                                 }
 619                                 break;
 620
 621                         case WID_RAT_BUILD_STATION:
 622                                 if (HandlePlacePushButton (this, WID_RAT_BUILD_STATION, SPR_CURSOR_RAIL_STATION, POINTER_TILE)) {
 623                                         ShowStationBuilder(this);
 624                                         this->last_user_action = widget;
 625                                 }
 626                                 break;
 627
 628                         case WID_RAT_BUILD_SIGNALS: {
 629                                 this->last_user_action = widget;
 630                                 bool started = HandlePlacePushButton (this, WID_RAT_BUILD_SIGNALS, ANIMCURSOR_BUILDSIGNALS, POINTER_TILE);
 631                                 if (started && _settings_client.gui.enable_signal_gui != _ctrl_pressed) {
 632                                         ShowSignalBuilder(this);
 633                                 }
 634                                 break;
 635                         }
 636
 637                         case WID_RAT_BUILD_BRIDGE:
 638                                 HandlePlacePushButton (this, WID_RAT_BUILD_BRIDGE, SPR_CURSOR_BRIDGE, POINTER_TILE);
 639                                 this->last_user_action = widget;
 640                                 break;
 641
 642                         case WID_RAT_BUILD_TUNNEL:
 643                                 HandlePlacePushButton (this, WID_RAT_BUILD_TUNNEL, GetRailTypeInfo(_cur_railtype)->cursor.tunnel, POINTER_AREA);
 644                                 this->last_user_action = widget;
 645                                 break;
 646
 647                         case WID_RAT_REMOVE:
 648                                 BuildRailClick_Remove(this);
 649                                 break;
 650
 651                         case WID_RAT_CONVERT_RAIL:
 652                                 HandlePlacePushButton (this, WID_RAT_CONVERT_RAIL, GetRailTypeInfo(_cur_railtype)->cursor.convert, POINTER_TILE);
 653                                 this->last_user_action = widget;
 654                                 break;
 655
 656                         default: NOT_REACHED();
 657                 }
 658                 this->UpdateRemoveWidgetStatus(widget);
 659                 if (_ctrl_pressed) RailToolbar_CtrlChanged(this);
 660         }
 661
 662         bool OnHotkey (int hotkey) OVERRIDE
 663         {
 664                 MarkTileDirtyByTile(TileVirtXY(_thd.pos.x, _thd.pos.y)); // redraw tile selection
 665                 return Window::OnHotkey(hotkey);
 666         }
 667
 668         virtual void OnPlaceObject(Point pt, TileIndex tile)
 669         {
 670                 switch (this->last_user_action) {
 671                         case WID_RAT_BUILD_NS:
 672                         case WID_RAT_BUILD_X:
 673                         case WID_RAT_BUILD_EW:
 674                         case WID_RAT_BUILD_Y:
 675                         case WID_RAT_AUTORAIL:
 676                                 VpStartPlaceSizing(tile, VPM_RAILDIRS, DRAG_PLACE_RAIL);
 677                                 break;
 678
 679                         case WID_RAT_DEMOLISH:
 680                                 VpStartPlaceSizing(tile, VPM_X_AND_Y_ROTATED, DRAG_DEMOLISH_AREA);
 681                                 break;
 682
 683                         case WID_RAT_BUILD_DEPOT:
 684                                 DoCommandP(tile, _cur_railtype, _build_depot_direction, CMD_BUILD_TRAIN_DEPOT);
 685                                 break;
 686
 687                         case WID_RAT_BUILD_WAYPOINT:
 688                                 PlaceRail_Waypoint(tile);
 689                                 break;
 690
 691                         case WID_RAT_BUILD_STATION:
 692                                 PlaceRail_Station(tile);
 693                                 break;
 694
 695                         case WID_RAT_BUILD_SIGNALS:
 696                                 VpStartPlaceSizing (tile, VPM_RAILDIRS, DRAG_BUILD_SIGNALS);
 697                                 break;
 698
 699                         case WID_RAT_BUILD_BRIDGE:
 700                                 if (IsBridgeHeadTile(tile)) {
 701                                         TileIndex other_tile = GetOtherBridgeEnd (tile);
 702                                         HandleBuildRailBridge (other_tile, tile);
 703                                 } else {
 704                                         VpStartPlaceSizing (tile, VPM_X_OR_Y, DRAG_BUILD_BRIDGE);
 705                                 }
 706                                 break;
 707
 708                         case WID_RAT_BUILD_TUNNEL:
 709                                 DoCommandP(tile, _cur_railtype | (TRANSPORT_RAIL << 8), 0, CMD_BUILD_TUNNEL);
 710                                 break;
 711
 712                         case WID_RAT_CONVERT_RAIL:
 713                                 VpStartPlaceSizing(tile, VPM_X_AND_Y_ROTATED, DRAG_CONVERT_RAIL);
 714                                 break;
 715
 716                         default: NOT_REACHED();
 717                 }
 718         }
 719
 720         bool OnPlaceDrag (int userdata, Point pt) OVERRIDE
 721         {
 722                 /* no dragging if you have pressed the convert button */
 723                 return (FindWindowById (WC_BUILD_SIGNAL, 0) == NULL)
 724                                 || !_convert_signal_button
 725                                 || !this->IsWidgetLowered (WID_RAT_BUILD_SIGNALS);
 726         }
 727
 728         void OnPlaceMouseUp (int userdata, Point pt, TileIndex start_tile, TileIndex end_tile) OVERRIDE
 729         {
 730                 if (pt.x != -1) {
 731                         switch (userdata) {
 732                                 default: NOT_REACHED();
 733                                 case DRAG_BUILD_BRIDGE:
 734                                         HandleBuildRailBridge (start_tile, end_tile);
 735                                         break;
 736
 737                                 case DRAG_PLACE_RAIL:
 738                                         HandleAutodirPlacement (start_tile, end_tile);
 739                                         break;
 740
 741                                 case DRAG_BUILD_SIGNALS:
 742                                         HandleAutoSignalPlacement (start_tile, end_tile);
 743                                         break;
 744
 745                                 case DRAG_DEMOLISH_AREA:
 746                                         HandleDemolishMouseUp (start_tile, end_tile);
 747                                         break;
 748
 749                                 case DRAG_CONVERT_RAIL:
 750                                         DoCommandP(end_tile, start_tile, _cur_railtype | (_ctrl_pressed ? 0x10 : 0), CMD_CONVERT_RAIL);
 751                                         break;
 752
 753                                 case DRAG_STATION:
 754                                         if (_remove_button_clicked) {
 755                                                 DoCommandP (end_tile, start_tile, _ctrl_pressed ? 0 : 1, CMD_REMOVE_FROM_RAIL_STATION);
 756                                         } else {
 757                                                 HandleStationPlacement (start_tile, end_tile);
 758                                         }
 759                                         break;
 760
 761                                 case DRAG_BUILD_WAYPOINT_X:
 762                                 case DRAG_BUILD_WAYPOINT_Y: {
 763                                         TileArea ta (start_tile, end_tile);
 764                                         uint32 p1 = _cur_railtype | (userdata == DRAG_BUILD_WAYPOINT_X ? AXIS_X : AXIS_Y) << 4 | ta.w << 8 | ta.h << 16 | _ctrl_pressed << 24;
 765                                         uint32 p2 = STAT_CLASS_WAYP | _cur_waypoint_type << 8 | INVALID_STATION << 16;
 766
 767                                         Command cmdcont (ta.tile, p1, p2, CMD_BUILD_RAIL_WAYPOINT);
 768                                         ShowSelectWaypointIfNeeded (&cmdcont, ta);
 769                                         break;
 770                                 }
 771
 772                                 case DRAG_REMOVE_WAYPOINT:
 773                                         DoCommandP (end_tile, start_tile, _ctrl_pressed ? 0 : 1, CMD_REMOVE_FROM_RAIL_WAYPOINT);
 774                                         break;
 775                         }
 776                 }
 777         }
 778
 779         virtual void OnPlaceObjectAbort()
 780         {
 781                 this->RaiseButtons();
 782                 this->DisableWidget(WID_RAT_REMOVE);
 783                 this->SetWidgetDirty(WID_RAT_REMOVE);
 784
 785                 DeleteWindowById(WC_BUILD_SIGNAL, TRANSPORT_RAIL);
 786                 DeleteWindowById(WC_BUILD_STATION, TRANSPORT_RAIL);
 787                 DeleteWindowById(WC_BUILD_DEPOT, TRANSPORT_RAIL);
 788                 DeleteWindowById(WC_BUILD_WAYPOINT, TRANSPORT_RAIL);
 789                 DeleteWindowById(WC_SELECT_STATION, 0);
 790                 DeleteWindowByClass(WC_BUILD_BRIDGE);
 791         }
 792
 793         void OnPlacePresize (TileIndex *tile, TileIndex *tile2) OVERRIDE
 794         {
 795                 DoCommand (*tile, _cur_railtype | (TRANSPORT_RAIL << 8), 0, DC_AUTO, CMD_BUILD_TUNNEL);
 796                 if (_build_tunnel_endtile != 0) *tile2 = _build_tunnel_endtile;
 797         }
 798
 799         bool OnCTRLStateChange (void) OVERRIDE
 800         {
 801                 /* do not toggle Remove button by Ctrl when placing station */
 802                 return !this->IsWidgetLowered (WID_RAT_BUILD_STATION)
 803                         && !this->IsWidgetLowered (WID_RAT_BUILD_WAYPOINT)
 804                         && RailToolbar_CtrlChanged (this);
 805         }
 806
 807         static HotkeyList hotkeys;
 808 };
 809
 810 /**
 811  * Handler for global hotkeys of the BuildRailToolbarWindow.
 812  * @param hotkey Hotkey
 813  * @return Whether the hotkey was handled.
 814  */
 815 static bool RailToolbarGlobalHotkeys (int hotkey)
 816 {
 817         if (_game_mode != GM_NORMAL || !CanBuildVehicleInfrastructure(VEH_TRAIN)) return false;
 818         extern RailType _last_built_railtype;
 819         Window *w = ShowBuildRailToolbar(_last_built_railtype);
 820         return (w != NULL) && w->OnHotkey (hotkey);
 821 }
 822
 823 static const Hotkey railtoolbar_hotkeys[] = {
 824         Hotkey ("build_ns", WID_RAT_BUILD_NS,       '1'),
 825         Hotkey ("build_x",  WID_RAT_BUILD_X,        '2'),
 826         Hotkey ("build_ew", WID_RAT_BUILD_EW,       '3'),
 827         Hotkey ("build_y",  WID_RAT_BUILD_Y,        '4'),
 828         Hotkey ("autorail", WID_RAT_AUTORAIL,       '5', 'A' | WKC_GLOBAL_HOTKEY),
 829         Hotkey ("demolish", WID_RAT_DEMOLISH,       '6'),
 830         Hotkey ("depot",    WID_RAT_BUILD_DEPOT,    '7'),
 831         Hotkey ("waypoint", WID_RAT_BUILD_WAYPOINT, '8'),
 832         Hotkey ("station",  WID_RAT_BUILD_STATION,  '9'),
 833         Hotkey ("signal",   WID_RAT_BUILD_SIGNALS,  'S'),
 834         Hotkey ("bridge",   WID_RAT_BUILD_BRIDGE,   'B'),
 835         Hotkey ("tunnel",   WID_RAT_BUILD_TUNNEL,   'T'),
 836         Hotkey ("remove",   WID_RAT_REMOVE,         'R'),
 837         Hotkey ("convert",  WID_RAT_CONVERT_RAIL,   'C'),
 838 };
 839 HotkeyList BuildRailToolbarWindow::hotkeys("railtoolbar", railtoolbar_hotkeys, RailToolbarGlobalHotkeys);
 840
 841 static const NWidgetPart _nested_build_rail_widgets[] = {
 842         NWidget(NWID_HORIZONTAL),
 843                 NWidget(WWT_CLOSEBOX, COLOUR_DARK_GREEN),
 844                 NWidget(WWT_CAPTION, COLOUR_DARK_GREEN, WID_RAT_CAPTION), SetDataTip(STR_WHITE_STRING, STR_TOOLTIP_WINDOW_TITLE_DRAG_THIS),
 845                 NWidget(WWT_STICKYBOX, COLOUR_DARK_GREEN),
 846         EndContainer(),
 847         NWidget(NWID_HORIZONTAL),
 848                 NWidget(WWT_IMGBTN, COLOUR_DARK_GREEN, WID_RAT_BUILD_NS),
 849                                                 SetFill(0, 1), SetMinimalSize(22, 22), SetDataTip(SPR_IMG_RAIL_NS, STR_RAIL_TOOLBAR_TOOLTIP_BUILD_RAILROAD_TRACK),
 850                 NWidget(WWT_IMGBTN, COLOUR_DARK_GREEN, WID_RAT_BUILD_X),
 851                                                 SetFill(0, 1), SetMinimalSize(22, 22), SetDataTip(SPR_IMG_RAIL_NE, STR_RAIL_TOOLBAR_TOOLTIP_BUILD_RAILROAD_TRACK),
 852                 NWidget(WWT_IMGBTN, COLOUR_DARK_GREEN, WID_RAT_BUILD_EW),
 853                                                 SetFill(0, 1), SetMinimalSize(22, 22), SetDataTip(SPR_IMG_RAIL_EW, STR_RAIL_TOOLBAR_TOOLTIP_BUILD_RAILROAD_TRACK),
 854                 NWidget(WWT_IMGBTN, COLOUR_DARK_GREEN, WID_RAT_BUILD_Y),
 855                                                 SetFill(0, 1), SetMinimalSize(22, 22), SetDataTip(SPR_IMG_RAIL_NW, STR_RAIL_TOOLBAR_TOOLTIP_BUILD_RAILROAD_TRACK),
 856                 NWidget(WWT_IMGBTN, COLOUR_DARK_GREEN, WID_RAT_AUTORAIL),
 857                                                 SetFill(0, 1), SetMinimalSize(22, 22), SetDataTip(SPR_IMG_AUTORAIL, STR_RAIL_TOOLBAR_TOOLTIP_BUILD_AUTORAIL),
 858
 859                 NWidget(WWT_PANEL, COLOUR_DARK_GREEN), SetMinimalSize(4, 22), SetDataTip(0x0, STR_NULL), EndContainer(),
 860
 861                 NWidget(WWT_IMGBTN, COLOUR_DARK_GREEN, WID_RAT_DEMOLISH),
 862                                                 SetFill(0, 1), SetMinimalSize(22, 22), SetDataTip(SPR_IMG_DYNAMITE, STR_TOOLTIP_DEMOLISH_BUILDINGS_ETC),
 863                 NWidget(WWT_IMGBTN, COLOUR_DARK_GREEN, WID_RAT_BUILD_DEPOT),
 864                                                 SetFill(0, 1), SetMinimalSize(22, 22), SetDataTip(SPR_IMG_DEPOT_RAIL, STR_RAIL_TOOLBAR_TOOLTIP_BUILD_TRAIN_DEPOT_FOR_BUILDING),
 865                 NWidget(WWT_IMGBTN, COLOUR_DARK_GREEN, WID_RAT_BUILD_WAYPOINT),
 866                                                 SetFill(0, 1), SetMinimalSize(22, 22), SetDataTip(SPR_IMG_WAYPOINT, STR_RAIL_TOOLBAR_TOOLTIP_CONVERT_RAIL_TO_WAYPOINT),
 867                 NWidget(WWT_IMGBTN, COLOUR_DARK_GREEN, WID_RAT_BUILD_STATION),
 868                                                 SetFill(0, 1), SetMinimalSize(42, 22), SetDataTip(SPR_IMG_RAIL_STATION, STR_RAIL_TOOLBAR_TOOLTIP_BUILD_RAILROAD_STATION),
 869                 NWidget(WWT_IMGBTN, COLOUR_DARK_GREEN, WID_RAT_BUILD_SIGNALS),
 870                                                 SetFill(0, 1), SetMinimalSize(22, 22), SetDataTip(SPR_IMG_RAIL_SIGNALS, STR_RAIL_TOOLBAR_TOOLTIP_BUILD_RAILROAD_SIGNALS),
 871                 NWidget(WWT_IMGBTN, COLOUR_DARK_GREEN, WID_RAT_BUILD_BRIDGE),
 872                                                 SetFill(0, 1), SetMinimalSize(42, 22), SetDataTip(SPR_IMG_BRIDGE, STR_RAIL_TOOLBAR_TOOLTIP_BUILD_RAILROAD_BRIDGE),
 873                 NWidget(WWT_IMGBTN, COLOUR_DARK_GREEN, WID_RAT_BUILD_TUNNEL),
 874                                                 SetFill(0, 1), SetMinimalSize(20, 22), SetDataTip(SPR_IMG_TUNNEL_RAIL, STR_RAIL_TOOLBAR_TOOLTIP_BUILD_RAILROAD_TUNNEL),
 875                 NWidget(WWT_IMGBTN, COLOUR_DARK_GREEN, WID_RAT_REMOVE),
 876                                                 SetFill(0, 1), SetMinimalSize(22, 22), SetDataTip(SPR_IMG_REMOVE, STR_RAIL_TOOLBAR_TOOLTIP_TOGGLE_BUILD_REMOVE_FOR),
 877                 NWidget(WWT_IMGBTN, COLOUR_DARK_GREEN, WID_RAT_CONVERT_RAIL),
 878                                                 SetFill(0, 1), SetMinimalSize(22, 22), SetDataTip(SPR_IMG_CONVERT_RAIL, STR_RAIL_TOOLBAR_TOOLTIP_CONVERT_RAIL),
 879         EndContainer(),
 880 };
 881
 882 static WindowDesc::Prefs _build_rail_prefs ("toolbar_rail");
 883
 884 static const WindowDesc _build_rail_desc(
 885         WDP_ALIGN_TOOLBAR, 0, 0,
 886         WC_BUILD_TOOLBAR, WC_NONE,
 887         WDF_CONSTRUCTION,
 888         _nested_build_rail_widgets, lengthof(_nested_build_rail_widgets),
 889         &_build_rail_prefs, &BuildRailToolbarWindow::hotkeys
 890 );
 891
 892
 893 /**
 894  * Open the build rail toolbar window for a specific rail type.
 895  *
 896  * If the terraform toolbar is linked to the toolbar, that window is also opened.
 897  *
 898  * @param railtype Rail type to open the window for
 899  * @return newly opened rail toolbar, or NULL if the toolbar could not be opened.
 900  */
 901 Window *ShowBuildRailToolbar(RailType railtype)
 902 {
 903         if (!Company::IsValidID(_local_company)) return NULL;
 904         if (!ValParamRailtype(railtype)) return NULL;
 905
 906         DeleteWindowByClass(WC_BUILD_TOOLBAR);
 907         _cur_railtype = railtype;
 908         _remove_button_clicked = false;
 909         return new BuildRailToolbarWindow(&_build_rail_desc, railtype);
 910 }
 911
 912 /* TODO: For custom stations, respect their allowed platforms/lengths bitmasks!
 913  * --pasky */
 914
 915 static void HandleStationPlacement(TileIndex start, TileIndex end)
 916 {
 917         TileArea ta(start, end);
 918         uint numtracks = ta.w;
 919         uint platlength = ta.h;
 920
 921         if (_railstation.orientation == AXIS_X) Swap(numtracks, platlength);
 922
 923         uint32 p1 = _cur_railtype | _railstation.orientation << 4 | numtracks << 8 | platlength << 16 | _ctrl_pressed << 24;
 924         uint32 p2 = _railstation.station_class | _railstation.station_type << 8 | INVALID_STATION << 16;
 925
 926         Command cmdcont (ta.tile, p1, p2, CMD_BUILD_RAIL_STATION);
 927         ShowSelectStationIfNeeded (&cmdcont, ta);
 928 }
 929
 930 /** Check the selected number of tracks when turning drag&drop off. */
 931 static void CheckPlatformWidth (const StationSpec *statspec)
 932 {
 933         byte disallowed = statspec->disallowed_platforms;
 934         if (HasBit(disallowed, _settings_client.gui.station_numtracks - 1)) {
 935                 /* The previously selected number of tracks is invalid. */
 936                 for (uint i = 0; i < 7; i++) {
 937                         if (!HasBit(disallowed, i)) {
 938                                 _settings_client.gui.station_numtracks = i + 1;
 939                                 break;
 940                         }
 941                 }
 942         }
 943 }
 944
 945 /** Check the selected platform length when turning drag&drop off. */
 946 static void CheckPlatformLength (const StationSpec *statspec)
 947 {
 948         byte disallowed = statspec->disallowed_lengths;
 949         if (HasBit(disallowed, _settings_client.gui.station_platlength - 1)) {
 950                 /* The previously selected number of platforms is invalid. */
 951                 for (uint i = 0; i < 7; i++) {
 952                         if (!HasBit(disallowed, i)) {
 953                                 _settings_client.gui.station_platlength = i + 1;
 954                                 break;
 955                         }
 956                 }
 957         }
 958 }
 959
 960 /** Draw a station preview in a widget. */
 961 static void DrawStationPreview (BlitArea *dpi, const Rect &r,
 962         StationClassID cls, uint type, uint image, bool check_avail)
 963 {
 964         /* Set up a clipping area for the station preview. */
 965         BlitArea tmp_dpi;
 966         if (InitBlitArea (dpi, &tmp_dpi, r.left, r.top, r.right - r.left + 1, r.bottom - r.top + 1)) {
 967                 int x = ScaleGUITrad(31) + 1;
 968                 int y = r.bottom - r.top - ScaleGUITrad(31);
 969                 if (!DrawStationTile (&tmp_dpi, x, y, _cur_railtype, (Axis)(image % 2), cls, type)) {
 970                         RailStationPickerDrawSprite (&tmp_dpi, x, y, cls == STAT_CLASS_WAYP, _cur_railtype, image);
 971                 }
 972         }
 973
 974         /* Check station availability callback */
 975         if (check_avail && !IsStationAvailable (StationClass::Get(cls)->GetSpec(type))) {
 976                 GfxFillRect (dpi, r.left + 1, r.top + 1, r.right - 1, r.bottom - 1, PC_BLACK, FILLRECT_CHECKER);
 977         }
 978 }
 979
 980 struct BuildRailStationWindow : public PickerWindowBase {
 981 private:
 982         uint line_height;     ///< Height of a single line in the newstation selection matrix (#WID_BRAS_NEWST_LIST widget).
 983         uint coverage_height; ///< Height of the coverage texts.
 984         Scrollbar *vscroll;   ///< Vertical scrollbar of the new station list.
 985         Scrollbar *vscroll2;  ///< Vertical scrollbar of the matrix with new stations.
 986
 987         /**
 988          * Verify whether the currently selected station size is allowed after selecting a new station class/type.
 989          * If not, change the station size variables ( _settings_client.gui.station_numtracks and _settings_client.gui.station_platlength ).
 990          * @param statspec Specification of the new station class/type
 991          */
 992         void CheckSelectedSize(const StationSpec *statspec)
 993         {
 994                 if (statspec == NULL || _settings_client.gui.station_dragdrop) return;
 995
 996                 /* If current number of tracks is not allowed, make it as big as possible */
 997                 if (HasBit(statspec->disallowed_platforms, _settings_client.gui.station_numtracks - 1)) {
 998                         this->RaiseWidget(_settings_client.gui.station_numtracks + WID_BRAS_PLATFORM_NUM_BEGIN);
 999                         _settings_client.gui.station_numtracks = 1;
1000                         if (statspec->disallowed_platforms != UINT8_MAX) {
1001                                 while (HasBit(statspec->disallowed_platforms, _settings_client.gui.station_numtracks - 1)) {
1002                                         _settings_client.gui.station_numtracks++;
1003                                 }
1004                                 this->LowerWidget(_settings_client.gui.station_numtracks + WID_BRAS_PLATFORM_NUM_BEGIN);
1005                         }
1006                 }
1007
1008                 if (HasBit(statspec->disallowed_lengths, _settings_client.gui.station_platlength - 1)) {
1009                         this->RaiseWidget(_settings_client.gui.station_platlength + WID_BRAS_PLATFORM_LEN_BEGIN);
1010                         _settings_client.gui.station_platlength = 1;
1011                         if (statspec->disallowed_lengths != UINT8_MAX) {
1012                                 while (HasBit(statspec->disallowed_lengths, _settings_client.gui.station_platlength - 1)) {
1013                                         _settings_client.gui.station_platlength++;
1014                                 }
1015                                 this->LowerWidget(_settings_client.gui.station_platlength + WID_BRAS_PLATFORM_LEN_BEGIN);
1016                         }
1017                 }
1018         }
1019
1020 public:
1021         BuildRailStationWindow (const WindowDesc *desc, Window *parent, bool newstation) :
1022                 PickerWindowBase (desc, parent), line_height (0),
1023                 coverage_height (2 * FONT_HEIGHT_NORMAL + 3 * WD_PAR_VSEP_NORMAL),
1024                 vscroll (NULL), vscroll2 (NULL)
1025         {
1026                 _railstation.newstations = newstation;
1027
1028                 this->CreateNestedTree();
1029                 NWidgetStacked *newst_additions = this->GetWidget<NWidgetStacked>(WID_BRAS_SHOW_NEWST_ADDITIONS);
1030                 newst_additions->SetDisplayedPlane(newstation ? 0 : SZSP_NONE);
1031                 newst_additions = this->GetWidget<NWidgetStacked>(WID_BRAS_SHOW_NEWST_MATRIX);
1032                 newst_additions->SetDisplayedPlane(newstation ? 0 : SZSP_NONE);
1033                 newst_additions = this->GetWidget<NWidgetStacked>(WID_BRAS_SHOW_NEWST_DEFSIZE);
1034                 newst_additions->SetDisplayedPlane(newstation ? 0 : SZSP_NONE);
1035                 newst_additions = this->GetWidget<NWidgetStacked>(WID_BRAS_SHOW_NEWST_RESIZE);
1036                 newst_additions->SetDisplayedPlane(newstation ? 0 : SZSP_NONE);
1037                 if (newstation) {
1038                         this->vscroll = this->GetScrollbar(WID_BRAS_NEWST_SCROLL);
1039                         this->vscroll2 = this->GetScrollbar(WID_BRAS_MATRIX_SCROLL);
1040                 }
1041                 this->InitNested(TRANSPORT_RAIL);
1042
1043                 this->LowerWidget(_railstation.orientation + WID_BRAS_PLATFORM_DIR_X);
1044                 if (_settings_client.gui.station_dragdrop) {
1045                         this->LowerWidget(WID_BRAS_PLATFORM_DRAG_N_DROP);
1046                 } else {
1047                         this->LowerWidget(_settings_client.gui.station_numtracks + WID_BRAS_PLATFORM_NUM_BEGIN);
1048                         this->LowerWidget(_settings_client.gui.station_platlength + WID_BRAS_PLATFORM_LEN_BEGIN);
1049                 }
1050                 this->SetWidgetLoweredState(WID_BRAS_HIGHLIGHT_OFF, !_settings_client.gui.station_show_coverage);
1051                 this->SetWidgetLoweredState(WID_BRAS_HIGHLIGHT_ON, _settings_client.gui.station_show_coverage);
1052
1053                 if (!newstation || _railstation.station_class >= (int)StationClass::GetClassCount()) {
1054                         /* New stations are not available or changed, so ensure the default station
1055                          * type is 'selected'. */
1056                         _railstation.station_class = STAT_CLASS_DFLT;
1057                         _railstation.station_type = 0;
1058                         this->vscroll2 = NULL;
1059                 }
1060                 if (newstation) {
1061                         _railstation.station_count = StationClass::Get(_railstation.station_class)->GetSpecCount();
1062                         _railstation.station_type = min(_railstation.station_type, _railstation.station_count - 1);
1063
1064                         int count = 0;
1065                         for (uint i = 0; i < StationClass::GetClassCount(); i++) {
1066                                 if (i == STAT_CLASS_WAYP) continue;
1067                                 count++;
1068                         }
1069                         this->vscroll->SetCount(count);
1070                         this->vscroll->SetPosition(Clamp(_railstation.station_class - 2, 0, max(this->vscroll->GetCount() - this->vscroll->GetCapacity(), 0)));
1071
1072                         NWidgetMatrix *matrix = this->GetWidget<NWidgetMatrix>(WID_BRAS_MATRIX);
1073                         matrix->SetScrollbar(this->vscroll2);
1074                         matrix->SetCount(_railstation.station_count);
1075                         matrix->SetClicked(_railstation.station_type);
1076                 }
1077         }
1078
1079         void OnDelete (void) FINAL_OVERRIDE
1080         {
1081                 DeleteWindowById(WC_SELECT_STATION, 0);
1082                 this->PickerWindowBase::OnDelete();
1083         }
1084
1085         void OnPaint (BlitArea *dpi) OVERRIDE
1086         {
1087                 bool newstations = _railstation.newstations;
1088                 const StationSpec *statspec = newstations ? StationClass::Get(_railstation.station_class)->GetSpec(_railstation.station_type) : NULL;
1089
1090                 int rad = (_settings_game.station.modified_catchment) ? CA_TRAIN : CA_UNMODIFIED;
1091
1092                 if (_settings_client.gui.station_show_coverage) SetTileSelectBigSize(-rad, -rad, 2 * rad, 2 * rad);
1093
1094                 for (uint bits = 0; bits < 7; bits++) {
1095                         bool disable = bits >= _settings_game.station.station_spread;
1096                         if (statspec == NULL) {
1097                                 this->SetWidgetDisabledState(bits + WID_BRAS_PLATFORM_NUM_1, disable);
1098                                 this->SetWidgetDisabledState(bits + WID_BRAS_PLATFORM_LEN_1, disable);
1099                         } else {
1100                                 this->SetWidgetDisabledState(bits + WID_BRAS_PLATFORM_NUM_1, HasBit(statspec->disallowed_platforms, bits) || disable);
1101                                 this->SetWidgetDisabledState(bits + WID_BRAS_PLATFORM_LEN_1, HasBit(statspec->disallowed_lengths,   bits) || disable);
1102                         }
1103                 }
1104
1105                 this->DrawWidgets (dpi);
1106
1107                 /* 'Accepts' and 'Supplies' texts. */
1108                 NWidgetBase *cov = this->GetWidget<NWidgetBase>(WID_BRAS_COVERAGE_TEXTS);
1109                 int top = cov->pos_y + WD_PAR_VSEP_NORMAL;
1110                 int left = cov->pos_x + WD_FRAMERECT_LEFT;
1111                 int right = cov->pos_x + cov->current_x - WD_FRAMERECT_RIGHT;
1112                 int bottom = cov->pos_y + cov->current_y;
1113                 top = DrawStationCoverageAreaText (dpi, left, right, top, rad);
1114                 /* Resize background if the window is too small.
1115                  * Never make the window smaller to avoid oscillating if the size change affects the acceptance.
1116                  * (This is the case, if making the window bigger moves the mouse into the window.) */
1117                 if (top > bottom) {
1118                         this->coverage_height += top - bottom;
1119                         this->ReInit();
1120                 }
1121         }
1122
1123         virtual void UpdateWidgetSize(int widget, Dimension *size, const Dimension &padding, Dimension *fill, Dimension *resize)
1124         {
1125                 switch (widget) {
1126                         case WID_BRAS_NEWST_LIST: {
1127                                 Dimension d = {0, 0};
1128                                 for (uint i = 0; i < StationClass::GetClassCount(); i++) {
1129                                         if (i == STAT_CLASS_WAYP) continue;
1130                                         d = maxdim(d, GetStringBoundingBox(StationClass::Get((StationClassID)i)->name));
1131                                 }
1132                                 size->width = max(size->width, d.width + padding.width);
1133                                 this->line_height = FONT_HEIGHT_NORMAL + WD_MATRIX_TOP + WD_MATRIX_BOTTOM;
1134                                 size->height = 5 * this->line_height;
1135                                 resize->height = this->line_height;
1136                                 break;
1137                         }
1138
1139                         case WID_BRAS_SHOW_NEWST_TYPE: {
1140                                 if (!_railstation.newstations) {
1141                                         size->width = 0;
1142                                         size->height = 0;
1143                                         break;
1144                                 }
1145
1146                                 /* If newstations exist, compute the non-zero minimal size. */
1147                                 Dimension d = {0, 0};
1148                                 StringID str = this->GetWidget<NWidgetCore>(widget)->widget_data;
1149                                 for (StationClassID statclass = STAT_CLASS_BEGIN; statclass < (StationClassID)StationClass::GetClassCount(); statclass++) {
1150                                         if (statclass == STAT_CLASS_WAYP) continue;
1151                                         StationClass *stclass = StationClass::Get(statclass);
1152                                         for (uint16 j = 0; j < stclass->GetSpecCount(); j++) {
1153                                                 const StationSpec *statspec = stclass->GetSpec(j);
1154                                                 SetDParam(0, (statspec != NULL && statspec->name != 0) ? statspec->name : STR_STATION_CLASS_DFLT);
1155                                                 d = maxdim(d, GetStringBoundingBox(str));
1156                                         }
1157                                 }
1158                                 size->width = max(size->width, d.width + padding.width);
1159                                 break;
1160                         }
1161
1162                         case WID_BRAS_PLATFORM_DIR_X:
1163                         case WID_BRAS_PLATFORM_DIR_Y:
1164                         case WID_BRAS_IMAGE:
1165                                 size->width  = ScaleGUITrad(64) + 2;
1166                                 size->height = ScaleGUITrad(58) + 2;
1167                                 break;
1168
1169                         case WID_BRAS_COVERAGE_TEXTS:
1170                                 size->height = this->coverage_height;
1171                                 break;
1172
1173                         case WID_BRAS_MATRIX:
1174                                 fill->height = 1;
1175                                 resize->height = 1;
1176                                 break;
1177                 }
1178         }
1179
1180         void DrawWidget (BlitArea *dpi, const Rect &r, int widget) const OVERRIDE
1181         {
1182                 int widn = GB(widget, 0, 16);
1183                 switch (widn) {
1184                         case WID_BRAS_PLATFORM_DIR_X:
1185                         case WID_BRAS_PLATFORM_DIR_Y:
1186                                 assert_compile (WID_BRAS_PLATFORM_DIR_X == 0);
1187                                 assert_compile (WID_BRAS_PLATFORM_DIR_Y == 1);
1188                                 DrawStationPreview (dpi, r, _railstation.station_class, _railstation.station_type, 2 + widn, false);
1189                                 break;
1190
1191                         case WID_BRAS_NEWST_LIST: {
1192                                 uint statclass = 0;
1193                                 uint row = 0;
1194                                 for (uint i = 0; i < StationClass::GetClassCount(); i++) {
1195                                         if (i == STAT_CLASS_WAYP) continue;
1196                                         if (this->vscroll->IsVisible(statclass)) {
1197                                                 DrawString (dpi, r.left + WD_MATRIX_LEFT, r.right - WD_MATRIX_RIGHT, row * this->line_height + r.top + WD_MATRIX_TOP,
1198                                                                 StationClass::Get((StationClassID)i)->name,
1199                                                                 (StationClassID)i == _railstation.station_class ? TC_WHITE : TC_BLACK);
1200                                                 row++;
1201                                         }
1202                                         statclass++;
1203                                 }
1204                                 break;
1205                         }
1206
1207                         case WID_BRAS_IMAGE: {
1208                                 byte type = GB(widget, 16, 16);
1209                                 assert(type < _railstation.station_count);
1210                                 DrawStationPreview (dpi, r, _railstation.station_class, type, 2 + _railstation.orientation, true);
1211                                 break;
1212                         }
1213                 }
1214         }
1215
1216         virtual void OnResize()
1217         {
1218                 if (this->vscroll != NULL) { // New stations available.
1219                         this->vscroll->SetCapacityFromWidget(this, WID_BRAS_NEWST_LIST);
1220                 }
1221         }
1222
1223         virtual void SetStringParameters(int widget) const
1224         {
1225                 if (widget == WID_BRAS_SHOW_NEWST_TYPE) {
1226                         const StationSpec *statspec = StationClass::Get(_railstation.station_class)->GetSpec(_railstation.station_type);
1227                         SetDParam(0, (statspec != NULL && statspec->name != 0) ? statspec->name : STR_STATION_CLASS_DFLT);
1228                 }
1229         }
1230
1231         virtual void OnClick(Point pt, int widget, int click_count)
1232         {
1233                 enum {
1234                         CHANGED_NONE,  ///< Nothing changed.
1235                         CHANGED_DIRTY, ///< Play a sound and mark window dirty.
1236                         CHANGED_RESET, ///< The same, plus reset construction.
1237                 } changed = CHANGED_NONE;
1238
1239                 switch (GB(widget, 0, 16)) {
1240                         case WID_BRAS_PLATFORM_DIR_X:
1241                         case WID_BRAS_PLATFORM_DIR_Y:
1242                                 this->RaiseWidget(_railstation.orientation + WID_BRAS_PLATFORM_DIR_X);
1243                                 _railstation.orientation = (Axis)(widget - WID_BRAS_PLATFORM_DIR_X);
1244                                 this->LowerWidget(_railstation.orientation + WID_BRAS_PLATFORM_DIR_X);
1245                                 changed = CHANGED_RESET;
1246                                 break;
1247
1248                         case WID_BRAS_PLATFORM_NUM_1:
1249                         case WID_BRAS_PLATFORM_NUM_2:
1250                         case WID_BRAS_PLATFORM_NUM_3:
1251                         case WID_BRAS_PLATFORM_NUM_4:
1252                         case WID_BRAS_PLATFORM_NUM_5:
1253                         case WID_BRAS_PLATFORM_NUM_6:
1254                         case WID_BRAS_PLATFORM_NUM_7: {
1255                                 this->RaiseWidget(_settings_client.gui.station_numtracks + WID_BRAS_PLATFORM_NUM_BEGIN);
1256                                 this->RaiseWidget(WID_BRAS_PLATFORM_DRAG_N_DROP);
1257
1258                                 _settings_client.gui.station_numtracks = widget - WID_BRAS_PLATFORM_NUM_BEGIN;
1259                                 _settings_client.gui.station_dragdrop = false;
1260
1261                                 _settings_client.gui.station_dragdrop = false;
1262
1263                                 const StationSpec *statspec = _railstation.newstations ? StationClass::Get(_railstation.station_class)->GetSpec(_railstation.station_type) : NULL;
1264                                 if (statspec != NULL) CheckPlatformLength (statspec);
1265
1266                                 this->LowerWidget(_settings_client.gui.station_numtracks + WID_BRAS_PLATFORM_NUM_BEGIN);
1267                                 this->LowerWidget(_settings_client.gui.station_platlength + WID_BRAS_PLATFORM_LEN_BEGIN);
1268                                 changed = CHANGED_RESET;
1269                                 break;
1270                         }
1271
1272                         case WID_BRAS_PLATFORM_LEN_1:
1273                         case WID_BRAS_PLATFORM_LEN_2:
1274                         case WID_BRAS_PLATFORM_LEN_3:
1275                         case WID_BRAS_PLATFORM_LEN_4:
1276                         case WID_BRAS_PLATFORM_LEN_5:
1277                         case WID_BRAS_PLATFORM_LEN_6:
1278                         case WID_BRAS_PLATFORM_LEN_7: {
1279                                 this->RaiseWidget(_settings_client.gui.station_platlength + WID_BRAS_PLATFORM_LEN_BEGIN);
1280                                 this->RaiseWidget(WID_BRAS_PLATFORM_DRAG_N_DROP);
1281
1282                                 _settings_client.gui.station_platlength = widget - WID_BRAS_PLATFORM_LEN_BEGIN;
1283                                 _settings_client.gui.station_dragdrop = false;
1284
1285                                 _settings_client.gui.station_dragdrop = false;
1286
1287                                 const StationSpec *statspec = _railstation.newstations ? StationClass::Get(_railstation.station_class)->GetSpec(_railstation.station_type) : NULL;
1288                                 if (statspec != NULL) CheckPlatformWidth (statspec);
1289
1290                                 this->LowerWidget(_settings_client.gui.station_numtracks + WID_BRAS_PLATFORM_NUM_BEGIN);
1291                                 this->LowerWidget(_settings_client.gui.station_platlength + WID_BRAS_PLATFORM_LEN_BEGIN);
1292                                 changed = CHANGED_RESET;
1293                                 break;
1294                         }
1295
1296                         case WID_BRAS_PLATFORM_DRAG_N_DROP: {
1297                                 _settings_client.gui.station_dragdrop ^= true;
1298
1299                                 this->ToggleWidgetLoweredState(WID_BRAS_PLATFORM_DRAG_N_DROP);
1300
1301                                 /* get the first allowed length/number of platforms */
1302                                 const StationSpec *statspec = _railstation.newstations ? StationClass::Get(_railstation.station_class)->GetSpec(_railstation.station_type) : NULL;
1303                                 if (statspec != NULL) {
1304                                         CheckPlatformLength (statspec);
1305                                         CheckPlatformWidth (statspec);
1306                                 }
1307
1308                                 this->SetWidgetLoweredState(_settings_client.gui.station_numtracks + WID_BRAS_PLATFORM_NUM_BEGIN, !_settings_client.gui.station_dragdrop);
1309                                 this->SetWidgetLoweredState(_settings_client.gui.station_platlength + WID_BRAS_PLATFORM_LEN_BEGIN, !_settings_client.gui.station_dragdrop);
1310                                 changed = CHANGED_RESET;
1311                                 break;
1312                         }
1313
1314                         case WID_BRAS_HIGHLIGHT_OFF:
1315                         case WID_BRAS_HIGHLIGHT_ON:
1316                                 _settings_client.gui.station_show_coverage = (widget != WID_BRAS_HIGHLIGHT_OFF);
1317
1318                                 this->SetWidgetLoweredState(WID_BRAS_HIGHLIGHT_OFF, !_settings_client.gui.station_show_coverage);
1319                                 this->SetWidgetLoweredState(WID_BRAS_HIGHLIGHT_ON, _settings_client.gui.station_show_coverage);
1320                                 changed = CHANGED_DIRTY;
1321                                 break;
1322
1323                         case WID_BRAS_NEWST_LIST: {
1324                                 int y = this->vscroll->GetScrolledRowFromWidget(pt.y, this, WID_BRAS_NEWST_LIST, 0, this->line_height);
1325                                 if (y >= (int)StationClass::GetClassCount()) return;
1326                                 for (uint i = 0; i < StationClass::GetClassCount(); i++) {
1327                                         if (i == STAT_CLASS_WAYP) continue;
1328                                         if (y == 0) {
1329                                                 if (_railstation.station_class != (StationClassID)i) {
1330                                                         _railstation.station_class = (StationClassID)i;
1331                                                         StationClass *stclass = StationClass::Get(_railstation.station_class);
1332                                                         _railstation.station_count = stclass->GetSpecCount();
1333                                                         _railstation.station_type  = min((int)_railstation.station_type, max(0, (int)_railstation.station_count - 1));
1334
1335                                                         this->CheckSelectedSize(stclass->GetSpec(_railstation.station_type));
1336
1337                                                         NWidgetMatrix *matrix = this->GetWidget<NWidgetMatrix>(WID_BRAS_MATRIX);
1338                                                         matrix->SetCount(_railstation.station_count);
1339                                                         matrix->SetClicked(_railstation.station_type);
1340                                                 }
1341                                                 changed = CHANGED_RESET;
1342                                                 break;
1343                                         }
1344                                         y--;
1345                                 }
1346                                 break;
1347                         }
1348
1349                         case WID_BRAS_IMAGE: {
1350                                 int y = GB(widget, 16, 16);
1351                                 if (y >= _railstation.station_count) return;
1352
1353                                 /* Check station availability callback */
1354                                 const StationSpec *statspec = StationClass::Get(_railstation.station_class)->GetSpec(y);
1355                                 if (!IsStationAvailable(statspec)) return;
1356
1357                                 _railstation.station_type = y;
1358
1359                                 this->CheckSelectedSize(statspec);
1360                                 this->GetWidget<NWidgetMatrix>(WID_BRAS_MATRIX)->SetClicked(_railstation.station_type);
1361
1362                                 changed = CHANGED_RESET;
1363                                 break;
1364                         }
1365                 }
1366
1367                 switch (changed) {
1368                         case CHANGED_RESET:
1369                                 DeleteWindowById (WC_SELECT_STATION, 0);
1370                                 SetStationTileSelectSize();
1371                                 /* fall through */
1372                         case CHANGED_DIRTY:
1373                                 if (_settings_client.sound.click_beep) SndPlayFx(SND_15_BEEP);
1374                                 this->SetDirty();
1375                                 /* fall through */
1376                         default: ;
1377                 }
1378         }
1379
1380         virtual void OnTick()
1381         {
1382                 CheckRedrawStationCoverage(this);
1383         }
1384 };
1385
1386 static const NWidgetPart _nested_station_builder_widgets[] = {
1387         NWidget(NWID_HORIZONTAL),
1388                 NWidget(WWT_CLOSEBOX, COLOUR_DARK_GREEN),
1389                 NWidget(WWT_CAPTION, COLOUR_DARK_GREEN), SetDataTip(STR_STATION_BUILD_RAIL_CAPTION, STR_TOOLTIP_WINDOW_TITLE_DRAG_THIS),
1390                 NWidget(NWID_SELECTION, INVALID_COLOUR, WID_BRAS_SHOW_NEWST_DEFSIZE),
1391                         NWidget(WWT_DEFSIZEBOX, COLOUR_DARK_GREEN),
1392                 EndContainer(),
1393         EndContainer(),
1394         NWidget(WWT_PANEL, COLOUR_DARK_GREEN),
1395                 NWidget(NWID_HORIZONTAL),
1396                         NWidget(NWID_VERTICAL),
1397                                 NWidget(NWID_SELECTION, INVALID_COLOUR, WID_BRAS_SHOW_NEWST_ADDITIONS),
1398                                         NWidget(NWID_HORIZONTAL), SetPIP(7, 0, 7), SetPadding(2, 0, 1, 0),
1399                                                 NWidget(WWT_MATRIX, COLOUR_GREY, WID_BRAS_NEWST_LIST), SetMinimalSize(122, 71), SetFill(1, 0),
1400                                                                 SetMatrixDataTip(1, 0, STR_STATION_BUILD_STATION_CLASS_TOOLTIP), SetScrollbar(WID_BRAS_NEWST_SCROLL),
1401                                                 NWidget(NWID_VSCROLLBAR, COLOUR_GREY, WID_BRAS_NEWST_SCROLL),
1402                                         EndContainer(),
1403                                 EndContainer(),
1404                                 NWidget(WWT_LABEL, COLOUR_DARK_GREEN), SetMinimalSize(144, 11), SetDataTip(STR_STATION_BUILD_ORIENTATION, STR_NULL), SetPadding(1, 2, 0, 2),
1405                                 NWidget(NWID_HORIZONTAL),
1406                                         NWidget(NWID_SPACER), SetMinimalSize(7, 0), SetFill(1, 0),
1407                                         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(),
1408                                         NWidget(NWID_SPACER), SetMinimalSize(2, 0), SetFill(1, 0),
1409                                         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(),
1410                                         NWidget(NWID_SPACER), SetMinimalSize(7, 0), SetFill(1, 0),
1411                                 EndContainer(),
1412                                 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),
1413                                 NWidget(WWT_LABEL, COLOUR_DARK_GREEN), SetMinimalSize(144, 11), SetDataTip(STR_STATION_BUILD_NUMBER_OF_TRACKS, STR_NULL), SetPadding(0, 2, 0, 2),
1414                                 NWidget(NWID_HORIZONTAL),
1415                                         NWidget(NWID_SPACER), SetFill(1, 0),
1416                                         NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_BRAS_PLATFORM_NUM_1), SetMinimalSize(15, 12), SetDataTip(STR_BLACK_1, STR_STATION_BUILD_NUMBER_OF_TRACKS_TOOLTIP),
1417                                         NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_BRAS_PLATFORM_NUM_2), SetMinimalSize(15, 12), SetDataTip(STR_BLACK_2, STR_STATION_BUILD_NUMBER_OF_TRACKS_TOOLTIP),
1418                                         NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_BRAS_PLATFORM_NUM_3), SetMinimalSize(15, 12), SetDataTip(STR_BLACK_3, STR_STATION_BUILD_NUMBER_OF_TRACKS_TOOLTIP),
1419                                         NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_BRAS_PLATFORM_NUM_4), SetMinimalSize(15, 12), SetDataTip(STR_BLACK_4, STR_STATION_BUILD_NUMBER_OF_TRACKS_TOOLTIP),
1420                                         NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_BRAS_PLATFORM_NUM_5), SetMinimalSize(15, 12), SetDataTip(STR_BLACK_5, STR_STATION_BUILD_NUMBER_OF_TRACKS_TOOLTIP),
1421                                         NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_BRAS_PLATFORM_NUM_6), SetMinimalSize(15, 12), SetDataTip(STR_BLACK_6, STR_STATION_BUILD_NUMBER_OF_TRACKS_TOOLTIP),
1422                                         NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_BRAS_PLATFORM_NUM_7), SetMinimalSize(15, 12), SetDataTip(STR_BLACK_7, STR_STATION_BUILD_NUMBER_OF_TRACKS_TOOLTIP),
1423                                         NWidget(NWID_SPACER), SetFill(1, 0),
1424                                 EndContainer(),
1425                                 NWidget(WWT_LABEL, COLOUR_DARK_GREEN), SetMinimalSize(144, 11), SetDataTip(STR_STATION_BUILD_PLATFORM_LENGTH, STR_NULL), SetPadding(2, 2, 0, 2),
1426                                 NWidget(NWID_HORIZONTAL),
1427                                         NWidget(NWID_SPACER), SetFill(1, 0),
1428                                         NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_BRAS_PLATFORM_LEN_1), SetMinimalSize(15, 12), SetDataTip(STR_BLACK_1, STR_STATION_BUILD_PLATFORM_LENGTH_TOOLTIP),
1429                                         NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_BRAS_PLATFORM_LEN_2), SetMinimalSize(15, 12), SetDataTip(STR_BLACK_2, STR_STATION_BUILD_PLATFORM_LENGTH_TOOLTIP),
1430                                         NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_BRAS_PLATFORM_LEN_3), SetMinimalSize(15, 12), SetDataTip(STR_BLACK_3, STR_STATION_BUILD_PLATFORM_LENGTH_TOOLTIP),
1431                                         NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_BRAS_PLATFORM_LEN_4), SetMinimalSize(15, 12), SetDataTip(STR_BLACK_4, STR_STATION_BUILD_PLATFORM_LENGTH_TOOLTIP),
1432                                         NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_BRAS_PLATFORM_LEN_5), SetMinimalSize(15, 12), SetDataTip(STR_BLACK_5, STR_STATION_BUILD_PLATFORM_LENGTH_TOOLTIP),
1433                                         NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_BRAS_PLATFORM_LEN_6), SetMinimalSize(15, 12), SetDataTip(STR_BLACK_6, STR_STATION_BUILD_PLATFORM_LENGTH_TOOLTIP),
1434                                         NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_BRAS_PLATFORM_LEN_7), SetMinimalSize(15, 12), SetDataTip(STR_BLACK_7, STR_STATION_BUILD_PLATFORM_LENGTH_TOOLTIP),
1435                                         NWidget(NWID_SPACER), SetFill(1, 0),
1436                                 EndContainer(),
1437                                 NWidget(NWID_SPACER), SetMinimalSize(0, 2),
1438                                 NWidget(NWID_HORIZONTAL),
1439                                         NWidget(NWID_SPACER), SetMinimalSize(2, 0), SetFill(1, 0),
1440                                         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),
1441                                         NWidget(NWID_SPACER), SetMinimalSize(2, 0), SetFill(1, 0),
1442                                 EndContainer(),
1443                                 NWidget(WWT_LABEL, COLOUR_DARK_GREEN), SetMinimalSize(144, 11), SetDataTip(STR_STATION_BUILD_COVERAGE_AREA_TITLE, STR_NULL), SetPadding(3, 2, 0, 2),
1444                                 NWidget(NWID_HORIZONTAL),
1445                                         NWidget(NWID_SPACER), SetMinimalSize(2, 0), SetFill(1, 0),
1446                                         NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_BRAS_HIGHLIGHT_OFF), SetMinimalSize(60, 12),
1447                                                                                                 SetDataTip(STR_STATION_BUILD_COVERAGE_OFF, STR_STATION_BUILD_COVERAGE_AREA_OFF_TOOLTIP),
1448                                         NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_BRAS_HIGHLIGHT_ON), SetMinimalSize(60, 12),
1449                                                                                                 SetDataTip(STR_STATION_BUILD_COVERAGE_ON, STR_STATION_BUILD_COVERAGE_AREA_ON_TOOLTIP),
1450                                         NWidget(NWID_SPACER), SetMinimalSize(2, 0), SetFill(1, 0),
1451                                 EndContainer(),
1452                         EndContainer(),
1453                         NWidget(NWID_SELECTION, INVALID_COLOUR, WID_BRAS_SHOW_NEWST_MATRIX),
1454                                 /* We need an additional background for the matrix, as the matrix cannot handle the scrollbar due to not being an NWidgetCore. */
1455                                 NWidget(WWT_PANEL, COLOUR_DARK_GREEN), SetScrollbar(WID_BRAS_MATRIX_SCROLL),
1456                                         NWidget(NWID_HORIZONTAL),
1457                                                 NWidget(NWID_MATRIX, COLOUR_DARK_GREEN, WID_BRAS_MATRIX), SetScrollbar(WID_BRAS_MATRIX_SCROLL), SetPIP(0, 2, 0), SetPadding(2, 0, 0, 0),
1458                                                         NWidget(WWT_PANEL, COLOUR_DARK_GREEN, WID_BRAS_IMAGE), SetMinimalSize(66, 60),
1459                                                                         SetFill(0, 0), SetResize(0, 0), SetDataTip(0x0, STR_STATION_BUILD_STATION_TYPE_TOOLTIP), SetScrollbar(WID_BRAS_MATRIX_SCROLL),
1460                                                         EndContainer(),
1461                                                 EndContainer(),
1462                                                 NWidget(NWID_VSCROLLBAR, COLOUR_DARK_GREEN, WID_BRAS_MATRIX_SCROLL),
1463                                         EndContainer(),
1464                                 EndContainer(),
1465                         EndContainer(),
1466                 EndContainer(),
1467                 NWidget(NWID_HORIZONTAL),
1468                         NWidget(WWT_EMPTY, INVALID_COLOUR, WID_BRAS_COVERAGE_TEXTS), SetFill(1, 1), SetResize(1, 0),
1469                         NWidget(NWID_SELECTION, INVALID_COLOUR, WID_BRAS_SHOW_NEWST_RESIZE),
1470                                 NWidget(NWID_VERTICAL),
1471                                         NWidget(WWT_PANEL, COLOUR_DARK_GREEN), SetFill(0, 1), EndContainer(),
1472                                         NWidget(WWT_RESIZEBOX, COLOUR_DARK_GREEN),
1473                                 EndContainer(),
1474                         EndContainer(),
1475                 EndContainer(),
1476         EndContainer(),
1477 };
1478
1479 /** Window preferences of the station-build window (default & newGRF) */
1480 static WindowDesc::Prefs _station_builder_prefs ("build_station_rail");
1481
1482 /** High level window description of the station-build window (default & newGRF) */
1483 static const WindowDesc _station_builder_desc(
1484         WDP_AUTO, 350, 0,
1485         WC_BUILD_STATION, WC_BUILD_TOOLBAR,
1486         WDF_CONSTRUCTION,
1487         _nested_station_builder_widgets, lengthof(_nested_station_builder_widgets),
1488         &_station_builder_prefs
1489 );
1490
1491 /** Open station build window */
1492 static void ShowStationBuilder(Window *parent)
1493 {
1494         bool newstations = StationClass::GetClassCount() > 2 || StationClass::Get(STAT_CLASS_DFLT)->GetSpecCount() != 1;
1495         new BuildRailStationWindow(&_station_builder_desc, parent, newstations);
1496 }
1497
1498 struct BuildSignalWindow : public PickerWindowBase {
1499 private:
1500         Dimension sig_sprite_size;     ///< Maximum size of signal GUI sprites.
1501         int sig_sprite_bottom_offset;  ///< Maximum extent of signal GUI sprite from reference point towards bottom.
1502
1503         /**
1504          * Draw dynamic a signal-sprite in a button in the signal GUI
1505          * Draw the sprite +1px to the right and down if the button is lowered
1506          *
1507          * @param widget_index index of this widget in the window
1508          * @param image        the sprite to draw
1509          */
1510         void DrawSignalSprite (BlitArea *dpi, byte widget_index, SpriteID image) const
1511         {
1512                 Point offset;
1513                 Dimension sprite_size = GetSpriteSize(image, &offset);
1514                 const NWidgetBase *widget = this->GetWidget<NWidgetBase>(widget_index);
1515                 int x = widget->pos_x - offset.x +
1516                                 (widget->current_x - sprite_size.width + offset.x) / 2;  // centered
1517                 int y = widget->pos_y - sig_sprite_bottom_offset + WD_IMGBTN_TOP +
1518                                 (widget->current_y - WD_IMGBTN_TOP - WD_IMGBTN_BOTTOM + sig_sprite_size.height) / 2; // aligned to bottom
1519
1520                 DrawSprite (dpi, image, PAL_NONE,
1521                                 x + this->IsWidgetLowered(widget_index),
1522                                 y + this->IsWidgetLowered(widget_index));
1523         }
1524
1525 public:
1526         BuildSignalWindow (const WindowDesc *desc, Window *parent) :
1527                 PickerWindowBase (desc, parent), sig_sprite_bottom_offset (0)
1528         {
1529                 this->sig_sprite_size.width  = 0;
1530                 this->sig_sprite_size.height = 0;
1531
1532                 this->InitNested(TRANSPORT_RAIL);
1533                 this->OnInvalidateData();
1534         }
1535
1536         void OnDelete (void) FINAL_OVERRIDE
1537         {
1538                 _convert_signal_button = false;
1539                 this->PickerWindowBase::OnDelete();
1540         }
1541
1542         virtual void OnInit()
1543         {
1544                 /* Calculate maximum signal sprite size. */
1545                 this->sig_sprite_size.width = 0;
1546                 this->sig_sprite_size.height = 0;
1547                 this->sig_sprite_bottom_offset = 0;
1548                 const RailtypeInfo *rti = GetRailTypeInfo(_cur_railtype);
1549                 for (uint type = SIGTYPE_NORMAL; type < SIGTYPE_END; type++) {
1550                         for (uint variant = SIG_ELECTRIC; variant <= SIG_SEMAPHORE; variant++) {
1551                                 for (uint lowered = 0; lowered < 2; lowered++) {
1552                                         Point offset;
1553                                         Dimension sprite_size = GetSpriteSize(rti->gui_sprites.signals[type][variant][lowered], &offset);
1554                                         this->sig_sprite_bottom_offset = max<int>(this->sig_sprite_bottom_offset, sprite_size.height);
1555                                         this->sig_sprite_size.width = max<int>(this->sig_sprite_size.width, sprite_size.width - offset.x);
1556                                         this->sig_sprite_size.height = max<int>(this->sig_sprite_size.height, sprite_size.height - offset.y);
1557                                 }
1558                         }
1559                 }
1560         }
1561
1562         virtual void UpdateWidgetSize(int widget, Dimension *size, const Dimension &padding, Dimension *fill, Dimension *resize)
1563         {
1564                 if (widget == WID_BS_DRAG_SIGNALS_DENSITY_LABEL) {
1565                         /* Two digits for signals density. */
1566                         size->width = max(size->width, 2 * GetDigitWidth() + padding.width + WD_FRAMERECT_LEFT + WD_FRAMERECT_RIGHT);
1567                 } else if (IsInsideMM(widget, WID_BS_SEMAPHORE_NORM, WID_BS_ELECTRIC_PBS_OWAY + 1)) {
1568                         size->width = max(size->width, this->sig_sprite_size.width + WD_IMGBTN_LEFT + WD_IMGBTN_RIGHT);
1569                         size->height = max(size->height, this->sig_sprite_size.height + WD_IMGBTN_TOP + WD_IMGBTN_BOTTOM);
1570                 }
1571         }
1572
1573         virtual void SetStringParameters(int widget) const
1574         {
1575                 switch (widget) {
1576                         case WID_BS_DRAG_SIGNALS_DENSITY_LABEL:
1577                                 SetDParam(0, _settings_client.gui.drag_signals_density);
1578                                 break;
1579                 }
1580         }
1581
1582         void DrawWidget (BlitArea *dpi, const Rect &r, int widget) const OVERRIDE
1583         {
1584                 if (IsInsideMM(widget, WID_BS_SEMAPHORE_NORM, WID_BS_ELECTRIC_PBS_OWAY + 1)) {
1585                         /* Extract signal from widget number. */
1586                         int type = (widget - WID_BS_SEMAPHORE_NORM) % SIGTYPE_END;
1587                         int var = SIG_SEMAPHORE - (widget - WID_BS_SEMAPHORE_NORM) / SIGTYPE_END; // SignalVariant order is reversed compared to the widgets.
1588                         SpriteID sprite = GetRailTypeInfo(_cur_railtype)->gui_sprites.signals[type][var][this->IsWidgetLowered(widget)];
1589
1590                         this->DrawSignalSprite (dpi, widget, sprite);
1591                 }
1592         }
1593
1594         virtual void OnClick(Point pt, int widget, int click_count)
1595         {
1596                 switch (widget) {
1597                         case WID_BS_SEMAPHORE_NORM:
1598                         case WID_BS_SEMAPHORE_ENTRY:
1599                         case WID_BS_SEMAPHORE_EXIT:
1600                         case WID_BS_SEMAPHORE_COMBO:
1601                         case WID_BS_SEMAPHORE_PBS:
1602                         case WID_BS_SEMAPHORE_PBS_OWAY:
1603                         case WID_BS_ELECTRIC_NORM:
1604                         case WID_BS_ELECTRIC_ENTRY:
1605                         case WID_BS_ELECTRIC_EXIT:
1606                         case WID_BS_ELECTRIC_COMBO:
1607                         case WID_BS_ELECTRIC_PBS:
1608                         case WID_BS_ELECTRIC_PBS_OWAY:
1609                                 this->RaiseWidget((_cur_signal_variant == SIG_ELECTRIC ? WID_BS_ELECTRIC_NORM : WID_BS_SEMAPHORE_NORM) + _cur_signal_type);
1610
1611                                 _cur_signal_type = (SignalType)((uint)((widget - WID_BS_SEMAPHORE_NORM) % SIGTYPE_END));
1612                                 _cur_signal_variant = widget >= WID_BS_ELECTRIC_NORM ? SIG_ELECTRIC : SIG_SEMAPHORE;
1613
1614                                 /* If 'remove' button of rail build toolbar is active, disable it. */
1615                                 if (_remove_button_clicked) {
1616                                         Window *w = FindWindowById(WC_BUILD_TOOLBAR, TRANSPORT_RAIL);
1617                                         if (w != NULL) ToggleRailButton_Remove(w);
1618                                 }
1619
1620                                 break;
1621
1622                         case WID_BS_CONVERT:
1623                                 _convert_signal_button = !_convert_signal_button;
1624                                 break;
1625
1626                         case WID_BS_DRAG_SIGNALS_DENSITY_DECREASE:
1627                                 if (_settings_client.gui.drag_signals_density > 1) {
1628                                         _settings_client.gui.drag_signals_density--;
1629                                         SetWindowDirty(WC_GAME_OPTIONS, WN_GAME_OPTIONS_GAME_SETTINGS);
1630                                 }
1631                                 break;
1632
1633                         case WID_BS_DRAG_SIGNALS_DENSITY_INCREASE:
1634                                 if (_settings_client.gui.drag_signals_density < 20) {
1635                                         _settings_client.gui.drag_signals_density++;
1636                                         SetWindowDirty(WC_GAME_OPTIONS, WN_GAME_OPTIONS_GAME_SETTINGS);
1637                                 }
1638                                 break;
1639
1640                         default: break;
1641                 }
1642
1643                 this->InvalidateData();
1644         }
1645
1646         /**
1647          * Some data on this window has become invalid.
1648          * @param data Information about the changed data.
1649          * @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.
1650          */
1651         virtual void OnInvalidateData(int data = 0, bool gui_scope = true)
1652         {
1653                 if (!gui_scope) return;
1654                 this->LowerWidget((_cur_signal_variant == SIG_ELECTRIC ? WID_BS_ELECTRIC_NORM : WID_BS_SEMAPHORE_NORM) + _cur_signal_type);
1655
1656                 this->SetWidgetLoweredState(WID_BS_CONVERT, _convert_signal_button);
1657
1658                 this->SetWidgetDisabledState(WID_BS_DRAG_SIGNALS_DENSITY_DECREASE, _settings_client.gui.drag_signals_density == 1);
1659                 this->SetWidgetDisabledState(WID_BS_DRAG_SIGNALS_DENSITY_INCREASE, _settings_client.gui.drag_signals_density == 20);
1660         }
1661 };
1662
1663 /** Nested widget definition of the build signal window */
1664 static const NWidgetPart _nested_signal_builder_widgets[] = {
1665         NWidget(NWID_HORIZONTAL),
1666                 NWidget(WWT_CLOSEBOX, COLOUR_DARK_GREEN),
1667                 NWidget(WWT_CAPTION, COLOUR_DARK_GREEN), SetDataTip(STR_BUILD_SIGNAL_CAPTION, STR_TOOLTIP_WINDOW_TITLE_DRAG_THIS),
1668         EndContainer(),
1669         NWidget(NWID_VERTICAL, NC_EQUALSIZE),
1670                 NWidget(NWID_HORIZONTAL, NC_EQUALSIZE),
1671                         NWidget(WWT_PANEL, COLOUR_DARK_GREEN, WID_BS_SEMAPHORE_NORM), SetDataTip(STR_NULL, STR_BUILD_SIGNAL_SEMAPHORE_NORM_TOOLTIP), EndContainer(), SetFill(1, 1),
1672                         NWidget(WWT_PANEL, COLOUR_DARK_GREEN, WID_BS_SEMAPHORE_ENTRY), SetDataTip(STR_NULL, STR_BUILD_SIGNAL_SEMAPHORE_ENTRY_TOOLTIP), EndContainer(), SetFill(1, 1),
1673                         NWidget(WWT_PANEL, COLOUR_DARK_GREEN, WID_BS_SEMAPHORE_EXIT), SetDataTip(STR_NULL, STR_BUILD_SIGNAL_SEMAPHORE_EXIT_TOOLTIP), EndContainer(), SetFill(1, 1),
1674                         NWidget(WWT_PANEL, COLOUR_DARK_GREEN, WID_BS_SEMAPHORE_COMBO), SetDataTip(STR_NULL, STR_BUILD_SIGNAL_SEMAPHORE_COMBO_TOOLTIP), EndContainer(), SetFill(1, 1),
1675                         NWidget(WWT_PANEL, COLOUR_DARK_GREEN, WID_BS_SEMAPHORE_PBS), SetDataTip(STR_NULL, STR_BUILD_SIGNAL_SEMAPHORE_PBS_TOOLTIP), EndContainer(), SetFill(1, 1),
1676                         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),
1677                         NWidget(WWT_IMGBTN, COLOUR_DARK_GREEN, WID_BS_CONVERT), SetDataTip(SPR_IMG_SIGNAL_CONVERT, STR_BUILD_SIGNAL_CONVERT_TOOLTIP), SetFill(1, 1),
1678                 EndContainer(),
1679                 NWidget(NWID_HORIZONTAL, NC_EQUALSIZE),
1680                         NWidget(WWT_PANEL, COLOUR_DARK_GREEN, WID_BS_ELECTRIC_NORM), SetDataTip(STR_NULL, STR_BUILD_SIGNAL_ELECTRIC_NORM_TOOLTIP), EndContainer(), SetFill(1, 1),
1681                         NWidget(WWT_PANEL, COLOUR_DARK_GREEN, WID_BS_ELECTRIC_ENTRY), SetDataTip(STR_NULL, STR_BUILD_SIGNAL_ELECTRIC_ENTRY_TOOLTIP), EndContainer(), SetFill(1, 1),
1682                         NWidget(WWT_PANEL, COLOUR_DARK_GREEN, WID_BS_ELECTRIC_EXIT), SetDataTip(STR_NULL, STR_BUILD_SIGNAL_ELECTRIC_EXIT_TOOLTIP), EndContainer(), SetFill(1, 1),
1683                         NWidget(WWT_PANEL, COLOUR_DARK_GREEN, WID_BS_ELECTRIC_COMBO), SetDataTip(STR_NULL, STR_BUILD_SIGNAL_ELECTRIC_COMBO_TOOLTIP), EndContainer(), SetFill(1, 1),
1684                         NWidget(WWT_PANEL, COLOUR_DARK_GREEN, WID_BS_ELECTRIC_PBS), SetDataTip(STR_NULL, STR_BUILD_SIGNAL_ELECTRIC_PBS_TOOLTIP), EndContainer(), SetFill(1, 1),
1685                         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),
1686                         NWidget(WWT_PANEL, COLOUR_DARK_GREEN), SetDataTip(STR_NULL, STR_BUILD_SIGNAL_DRAG_SIGNALS_DENSITY_TOOLTIP), SetFill(1, 1),
1687                                 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),
1688                                 NWidget(NWID_HORIZONTAL), SetPIP(2, 0, 2),
1689                                         NWidget(NWID_SPACER), SetFill(1, 0),
1690                                         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),
1691                                         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),
1692                                         NWidget(NWID_SPACER), SetFill(1, 0),
1693                                 EndContainer(),
1694                                 NWidget(NWID_SPACER), SetMinimalSize(0, 2), SetFill(1, 0),
1695                         EndContainer(),
1696                 EndContainer(),
1697         EndContainer(),
1698 };
1699
1700 /** Signal selection window preferences */
1701 static WindowDesc::Prefs _signal_builder_prefs ("build_signal");
1702
1703 /** Signal selection window description */
1704 static const WindowDesc _signal_builder_desc(
1705         WDP_AUTO, 0, 0,
1706         WC_BUILD_SIGNAL, WC_BUILD_TOOLBAR,
1707         WDF_CONSTRUCTION,
1708         _nested_signal_builder_widgets, lengthof(_nested_signal_builder_widgets),
1709         &_signal_builder_prefs
1710 );
1711
1712 /**
1713  * Open the signal selection window
1714  */
1715 static void ShowSignalBuilder(Window *parent)
1716 {
1717         new BuildSignalWindow(&_signal_builder_desc, parent);
1718 }
1719
1720 struct BuildRailDepotWindow : public PickerWindowBase {
1721         BuildRailDepotWindow (const WindowDesc *desc, Window *parent) : PickerWindowBase(desc, parent)
1722         {
1723                 this->InitNested(TRANSPORT_RAIL);
1724                 this->LowerWidget(_build_depot_direction + WID_BRAD_DEPOT_NE);
1725         }
1726
1727         virtual void UpdateWidgetSize(int widget, Dimension *size, const Dimension &padding, Dimension *fill, Dimension *resize)
1728         {
1729                 if (!IsInsideMM(widget, WID_BRAD_DEPOT_NE, WID_BRAD_DEPOT_NW + 1)) return;
1730
1731                 size->width  = ScaleGUITrad(64) + 2;
1732                 size->height = ScaleGUITrad(48) + 2;
1733         }
1734
1735         void DrawWidget (BlitArea *dpi, const Rect &r, int widget) const OVERRIDE
1736         {
1737                 if (!IsInsideMM(widget, WID_BRAD_DEPOT_NE, WID_BRAD_DEPOT_NW + 1)) return;
1738
1739                 DrawTrainDepotSprite (dpi, r.left + 1 + ScaleGUITrad(31), r.bottom - ScaleGUITrad(31), widget - WID_BRAD_DEPOT_NE + DIAGDIR_NE, _cur_railtype);
1740         }
1741
1742         virtual void OnClick(Point pt, int widget, int click_count)
1743         {
1744                 switch (widget) {
1745                         case WID_BRAD_DEPOT_NE:
1746                         case WID_BRAD_DEPOT_SE:
1747                         case WID_BRAD_DEPOT_SW:
1748                         case WID_BRAD_DEPOT_NW:
1749                                 this->RaiseWidget(_build_depot_direction + WID_BRAD_DEPOT_NE);
1750                                 _build_depot_direction = (DiagDirection)(widget - WID_BRAD_DEPOT_NE);
1751                                 this->LowerWidget(_build_depot_direction + WID_BRAD_DEPOT_NE);
1752                                 if (_settings_client.sound.click_beep) SndPlayFx(SND_15_BEEP);
1753                                 this->SetDirty();
1754                                 break;
1755                 }
1756         }
1757 };
1758
1759 /** Nested widget definition of the build rail depot window */
1760 static const NWidgetPart _nested_build_depot_widgets[] = {
1761         NWidget(NWID_HORIZONTAL),
1762                 NWidget(WWT_CLOSEBOX, COLOUR_DARK_GREEN),
1763                 NWidget(WWT_CAPTION, COLOUR_DARK_GREEN), SetDataTip(STR_BUILD_DEPOT_TRAIN_ORIENTATION_CAPTION, STR_TOOLTIP_WINDOW_TITLE_DRAG_THIS),
1764         EndContainer(),
1765         NWidget(WWT_PANEL, COLOUR_DARK_GREEN),
1766                 NWidget(NWID_SPACER), SetMinimalSize(0, 3),
1767                 NWidget(NWID_HORIZONTAL_LTR),
1768                         NWidget(NWID_SPACER), SetMinimalSize(3, 0), SetFill(1, 0),
1769                         NWidget(NWID_VERTICAL),
1770                                 NWidget(WWT_PANEL, COLOUR_GREY, WID_BRAD_DEPOT_NW), SetMinimalSize(66, 50), SetDataTip(0x0, STR_BUILD_DEPOT_TRAIN_ORIENTATION_TOOLTIP),
1771                                 EndContainer(),
1772                                 NWidget(NWID_SPACER), SetMinimalSize(0, 2),
1773                                 NWidget(WWT_PANEL, COLOUR_GREY, WID_BRAD_DEPOT_SW), SetMinimalSize(66, 50), SetDataTip(0x0, STR_BUILD_DEPOT_TRAIN_ORIENTATION_TOOLTIP),
1774                                 EndContainer(),
1775                         EndContainer(),
1776                         NWidget(NWID_SPACER), SetMinimalSize(2, 0),
1777                         NWidget(NWID_VERTICAL),
1778                                 NWidget(WWT_PANEL, COLOUR_GREY, WID_BRAD_DEPOT_NE), SetMinimalSize(66, 50), SetDataTip(0x0, STR_BUILD_DEPOT_TRAIN_ORIENTATION_TOOLTIP),
1779                                 EndContainer(),
1780                                 NWidget(NWID_SPACER), SetMinimalSize(0, 2),
1781                                 NWidget(WWT_PANEL, COLOUR_GREY, WID_BRAD_DEPOT_SE), SetMinimalSize(66, 50), SetDataTip(0x0, STR_BUILD_DEPOT_TRAIN_ORIENTATION_TOOLTIP),
1782                                 EndContainer(),
1783                         EndContainer(),
1784                         NWidget(NWID_SPACER), SetMinimalSize(3, 0), SetFill(1, 0),
1785                 EndContainer(),
1786                 NWidget(NWID_SPACER), SetMinimalSize(0, 3),
1787         EndContainer(),
1788 };
1789
1790 static const WindowDesc _build_depot_desc(
1791         WDP_AUTO, 0, 0,
1792         WC_BUILD_DEPOT, WC_BUILD_TOOLBAR,
1793         WDF_CONSTRUCTION,
1794         _nested_build_depot_widgets, lengthof(_nested_build_depot_widgets)
1795 );
1796
1797 static void ShowBuildTrainDepotPicker(Window *parent)
1798 {
1799         new BuildRailDepotWindow(&_build_depot_desc, parent);
1800 }
1801
1802 struct BuildRailWaypointWindow : PickerWindowBase {
1803         BuildRailWaypointWindow (const WindowDesc *desc, Window *parent) : PickerWindowBase(desc, parent)
1804         {
1805                 this->CreateNestedTree();
1806
1807                 NWidgetMatrix *matrix = this->GetWidget<NWidgetMatrix>(WID_BRW_WAYPOINT_MATRIX);
1808                 matrix->SetScrollbar(this->GetScrollbar(WID_BRW_SCROLL));
1809
1810                 this->InitNested(TRANSPORT_RAIL);
1811
1812                 matrix->SetCount(_waypoint_count);
1813                 matrix->SetClicked(_cur_waypoint_type);
1814         }
1815
1816         virtual void UpdateWidgetSize(int widget, Dimension *size, const Dimension &padding, Dimension *fill, Dimension *resize)
1817         {
1818                 switch (widget) {
1819                         case WID_BRW_WAYPOINT_MATRIX:
1820                                 /* Three blobs high and wide. */
1821                                 size->width  += resize->width  * 2;
1822                                 size->height += resize->height * 2;
1823
1824                                 /* Resizing in X direction only at blob size, but at pixel level in Y. */
1825                                 resize->height = 1;
1826                                 break;
1827
1828                         case WID_BRW_WAYPOINT:
1829                                 size->width  = ScaleGUITrad(64) + 2;
1830                                 size->height = ScaleGUITrad(58) + 2;
1831                                 break;
1832                 }
1833         }
1834
1835         void DrawWidget (BlitArea *dpi, const Rect &r, int widget) const OVERRIDE
1836         {
1837                 switch (GB(widget, 0, 16)) {
1838                         case WID_BRW_WAYPOINT: {
1839                                 byte type = GB(widget, 16, 16);
1840                                 DrawStationPreview (dpi, r, STAT_CLASS_WAYP, type, AXIS_X, true);
1841                                 break;
1842                         }
1843                 }
1844         }
1845
1846         virtual void OnClick(Point pt, int widget, int click_count)
1847         {
1848                 switch (GB(widget, 0, 16)) {
1849                         case WID_BRW_WAYPOINT: {
1850                                 byte type = GB(widget, 16, 16);
1851                                 this->GetWidget<NWidgetMatrix>(WID_BRW_WAYPOINT_MATRIX)->SetClicked(_cur_waypoint_type);
1852
1853                                 /* Check station availability callback */
1854                                 const StationSpec *statspec = StationClass::Get(STAT_CLASS_WAYP)->GetSpec(type);
1855                                 if (!IsStationAvailable(statspec)) return;
1856
1857                                 _cur_waypoint_type = type;
1858                                 this->GetWidget<NWidgetMatrix>(WID_BRW_WAYPOINT_MATRIX)->SetClicked(_cur_waypoint_type);
1859                                 if (_settings_client.sound.click_beep) SndPlayFx(SND_15_BEEP);
1860                                 this->SetDirty();
1861                                 break;
1862                         }
1863                 }
1864         }
1865 };
1866
1867 /** Nested widget definition for the build NewGRF rail waypoint window */
1868 static const NWidgetPart _nested_build_waypoint_widgets[] = {
1869         NWidget(NWID_HORIZONTAL),
1870                 NWidget(WWT_CLOSEBOX, COLOUR_DARK_GREEN),
1871                 NWidget(WWT_CAPTION, COLOUR_DARK_GREEN), SetDataTip(STR_WAYPOINT_CAPTION, STR_TOOLTIP_WINDOW_TITLE_DRAG_THIS),
1872                 NWidget(WWT_DEFSIZEBOX, COLOUR_DARK_GREEN),
1873         EndContainer(),
1874         NWidget(NWID_HORIZONTAL),
1875                 NWidget(NWID_MATRIX, COLOUR_DARK_GREEN, WID_BRW_WAYPOINT_MATRIX), SetPIP(3, 2, 3), SetScrollbar(WID_BRW_SCROLL),
1876                         NWidget(WWT_PANEL, COLOUR_DARK_GREEN, WID_BRW_WAYPOINT), SetMinimalSize(66, 60), SetDataTip(0x0, STR_WAYPOINT_GRAPHICS_TOOLTIP), SetScrollbar(WID_BRW_SCROLL), EndContainer(),
1877                 EndContainer(),
1878                 NWidget(NWID_VERTICAL),
1879                         NWidget(NWID_VSCROLLBAR, COLOUR_DARK_GREEN, WID_BRW_SCROLL),
1880                         NWidget(WWT_RESIZEBOX, COLOUR_DARK_GREEN),
1881                 EndContainer(),
1882         EndContainer(),
1883 };
1884
1885 static WindowDesc::Prefs _build_waypoint_prefs ("build_waypoint");
1886
1887 static const WindowDesc _build_waypoint_desc(
1888         WDP_AUTO, 0, 0,
1889         WC_BUILD_WAYPOINT, WC_BUILD_TOOLBAR,
1890         WDF_CONSTRUCTION,
1891         _nested_build_waypoint_widgets, lengthof(_nested_build_waypoint_widgets),
1892         &_build_waypoint_prefs
1893 );
1894
1895 static void ShowBuildWaypointPicker(Window *parent)
1896 {
1897         new BuildRailWaypointWindow(&_build_waypoint_desc, parent);
1898 }
1899
1900 /**
1901  * Initialize rail building GUI settings
1902  */
1903 void InitializeRailGui()
1904 {
1905         _build_depot_direction = DIAGDIR_NW;
1906 }
1907
1908 /**
1909  * Re-initialize rail-build toolbar after toggling support for electric trains
1910  * @param disable Boolean whether electric trains are disabled (removed from the game)
1911  */
1912 void ReinitGuiAfterToggleElrail(bool disable)
1913 {
1914         extern RailType _last_built_railtype;
1915         if (disable && _last_built_railtype == RAILTYPE_ELECTRIC) {
1916                 _last_built_railtype = _cur_railtype = RAILTYPE_RAIL;
1917                 BuildRailToolbarWindow *w = dynamic_cast<BuildRailToolbarWindow *>(FindWindowById(WC_BUILD_TOOLBAR, TRANSPORT_RAIL));
1918                 if (w != NULL) w->ModifyRailType(_cur_railtype);
1919         }
1920         MarkWholeScreenDirty();
1921 }
1922
1923 /** Set the initial (default) railtype to use */
1924 static void SetDefaultRailGui()
1925 {
1926         if (_local_company == COMPANY_SPECTATOR || !Company::IsValidID(_local_company)) return;
1927
1928         extern RailType _last_built_railtype;
1929         RailType rt = (RailType)(_settings_client.gui.default_rail_type + RAILTYPE_END);
1930         if (rt == DEF_RAILTYPE_MOST_USED) {
1931                 /* Find the most used rail type */
1932                 RailType count[RAILTYPE_END];
1933                 memset(count, 0, sizeof(count));
1934                 for (TileIndex t = 0; t < MapSize(); t++) {
1935                         if (IsRailwayTile(t) || IsRailDepotTile(t) || IsLevelCrossingTile(t) || HasStationTileRail(t) ||
1936                                         maptile_is_rail_tunnel(t)) {
1937                                 count[GetRailType(t)]++;
1938                         }
1939                 }
1940
1941                 rt = RAILTYPE_RAIL;
1942                 for (RailType r = RAILTYPE_ELECTRIC; r < RAILTYPE_END; r++) {
1943                         if (count[r] >= count[rt]) rt = r;
1944                 }
1945
1946                 /* No rail, just get the first available one */
1947                 if (count[rt] == 0) rt = DEF_RAILTYPE_FIRST;
1948         }
1949         switch (rt) {
1950                 case DEF_RAILTYPE_FIRST:
1951                         rt = RAILTYPE_RAIL;
1952                         while (rt < RAILTYPE_END && !HasRailtypeAvail(_local_company, rt)) rt++;
1953                         break;
1954
1955                 case DEF_RAILTYPE_LAST:
1956                         rt = GetBestRailtype(_local_company);
1957                         break;
1958
1959                 default:
1960                         break;
1961         }
1962
1963         _last_built_railtype = _cur_railtype = rt;
1964         BuildRailToolbarWindow *w = dynamic_cast<BuildRailToolbarWindow *>(FindWindowById(WC_BUILD_TOOLBAR, TRANSPORT_RAIL));
1965         if (w != NULL) w->ModifyRailType(_cur_railtype);
1966 }
1967
1968 /**
1969  * Updates the current signal variant used in the signal GUI
1970  * to the one adequate to current year.
1971  * @param p needed to be called when a setting changes
1972  * @return success, needed for settings
1973  */
1974 bool ResetSignalVariant(int32 p)
1975 {
1976         SignalVariant new_variant = (_cur_year < _settings_client.gui.semaphore_build_before ? SIG_SEMAPHORE : SIG_ELECTRIC);
1977
1978         if (new_variant != _cur_signal_variant) {
1979                 Window *w = FindWindowById(WC_BUILD_SIGNAL, 0);
1980                 if (w != NULL) {
1981                         w->SetDirty();
1982                         w->RaiseWidget((_cur_signal_variant == SIG_ELECTRIC ? WID_BS_ELECTRIC_NORM : WID_BS_SEMAPHORE_NORM) + _cur_signal_type);
1983                 }
1984                 _cur_signal_variant = new_variant;
1985         }
1986
1987         return true;
1988 }
1989
1990 /**
1991  * Resets the rail GUI - sets default railtype to build
1992  * and resets the signal GUI
1993  */
1994 void InitializeRailGUI()
1995 {
1996         SetDefaultRailGui();
1997
1998         _convert_signal_button = false;
1999         _cur_signal_type = _default_signal_type[_settings_client.gui.default_signal_type];
2000         ResetSignalVariant();
2001 }
2002
2003 /**
2004  * Create a drop down list for all the rail types of the local company.
2005  * @param for_replacement Whether this list is for the replacement window.
2006  * @param all_option Whether to add an 'all types' item.
2007  * @return The populated and sorted #DropDownList.
2008  */
2009 DropDownList *GetRailTypeDropDownList(bool for_replacement, bool all_option)
2010 {
2011         RailTypes used_railtypes = RAILTYPES_NONE;
2012
2013         /* Find the used railtypes. */
2014         Engine *e;
2015         FOR_ALL_ENGINES_OF_TYPE(e, VEH_TRAIN) {
2016                 if (!HasBit(e->info.climates, _settings_game.game_creation.landscape)) continue;
2017
2018                 used_railtypes |= GetRailTypeInfo(e->u.rail.railtype)->introduces_railtypes;
2019         }
2020
2021         /* Get the date introduced railtypes as well. */
2022         used_railtypes = AddDateIntroducedRailTypes(used_railtypes, MAX_DAY);
2023
2024         const Company *c = Company::Get(_local_company);
2025         DropDownList *list = new DropDownList();
2026
2027         if (all_option) {
2028                 DropDownListStringItem *item = new DropDownListStringItem(STR_REPLACE_ALL_RAILTYPE, INVALID_RAILTYPE, false);
2029                 *list->Append() = item;
2030         }
2031
2032         RailType rt;
2033         FOR_ALL_SORTED_RAILTYPES(rt) {
2034                 /* If it's not used ever, don't show it to the user. */
2035                 if (!HasBit(used_railtypes, rt)) continue;
2036
2037                 const RailtypeInfo *rti = GetRailTypeInfo(rt);
2038
2039                 StringID str = for_replacement ? rti->strings.replace_text : (rti->max_speed > 0 ? STR_TOOLBAR_RAILTYPE_VELOCITY : STR_JUST_STRING);
2040                 DropDownListParamStringItem *item = new DropDownListParamStringItem(str, rt, !HasBit(c->avail_railtypes, rt));
2041                 item->SetParam(0, rti->strings.menu_text);
2042                 item->SetParam(1, rti->max_speed);
2043                 *list->Append() = item;
2044         }
2045         return list;
2046 }