misc_gui.cpp

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00001 /* $Id: misc_gui.cpp 24785 2012-12-05 19:34:25Z frosch $ */
00002 
00003 /*
00004  * This file is part of OpenTTD.
00005  * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
00006  * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
00007  * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
00008  */
00009 
00012 #include "stdafx.h"
00013 #include "debug.h"
00014 #include "landscape.h"
00015 #include "error.h"
00016 #include "gui.h"
00017 #include "command_func.h"
00018 #include "company_func.h"
00019 #include "town.h"
00020 #include "string_func.h"
00021 #include "company_base.h"
00022 #include "texteff.hpp"
00023 #include "strings_func.h"
00024 #include "window_func.h"
00025 #include "querystring_gui.h"
00026 #include "core/geometry_func.hpp"
00027 #include "newgrf_debug.h"
00028 
00029 #include "widgets/misc_widget.h"
00030 
00031 #include "table/strings.h"
00032 
00034 enum OskActivation {
00035   OSKA_DISABLED,           
00036   OSKA_DOUBLE_CLICK,       
00037   OSKA_SINGLE_CLICK,       
00038   OSKA_IMMEDIATELY,        
00039 };
00040 
00041 
00042 static const NWidgetPart _nested_land_info_widgets[] = {
00043   NWidget(NWID_HORIZONTAL),
00044     NWidget(WWT_CLOSEBOX, COLOUR_GREY),
00045     NWidget(WWT_CAPTION, COLOUR_GREY), SetDataTip(STR_LAND_AREA_INFORMATION_CAPTION, STR_TOOLTIP_WINDOW_TITLE_DRAG_THIS),
00046     NWidget(WWT_DEBUGBOX, COLOUR_GREY),
00047   EndContainer(),
00048   NWidget(WWT_PANEL, COLOUR_GREY, WID_LI_BACKGROUND), EndContainer(),
00049 };
00050 
00051 static const WindowDesc _land_info_desc(
00052   WDP_AUTO, 0, 0,
00053   WC_LAND_INFO, WC_NONE,
00054   0,
00055   _nested_land_info_widgets, lengthof(_nested_land_info_widgets)
00056 );
00057 
00058 class LandInfoWindow : public Window {
00059   enum LandInfoLines {
00060     LAND_INFO_CENTERED_LINES   = 12,                       
00061     LAND_INFO_MULTICENTER_LINE = LAND_INFO_CENTERED_LINES, 
00062     LAND_INFO_LINE_END,
00063   };
00064 
00065   static const uint LAND_INFO_LINE_BUFF_SIZE = 512;
00066 
00067 public:
00068   char landinfo_data[LAND_INFO_LINE_END][LAND_INFO_LINE_BUFF_SIZE];
00069   TileIndex tile;
00070 
00071   virtual void DrawWidget(const Rect &r, int widget) const
00072   {
00073     if (widget != WID_LI_BACKGROUND) return;
00074 
00075     uint y = r.top + WD_TEXTPANEL_TOP;
00076     for (uint i = 0; i < LAND_INFO_CENTERED_LINES; i++) {
00077       if (StrEmpty(this->landinfo_data[i])) break;
00078 
00079       DrawString(r.left + WD_FRAMETEXT_LEFT, r.right - WD_FRAMETEXT_RIGHT, y, this->landinfo_data[i], i == 0 ? TC_LIGHT_BLUE : TC_FROMSTRING, SA_HOR_CENTER);
00080       y += FONT_HEIGHT_NORMAL + WD_PAR_VSEP_NORMAL;
00081       if (i == 0) y += 4;
00082     }
00083 
00084     if (!StrEmpty(this->landinfo_data[LAND_INFO_MULTICENTER_LINE])) {
00085       SetDParamStr(0, this->landinfo_data[LAND_INFO_MULTICENTER_LINE]);
00086       DrawStringMultiLine(r.left + WD_FRAMETEXT_LEFT, r.right - WD_FRAMETEXT_RIGHT, y, r.bottom - WD_TEXTPANEL_BOTTOM, STR_JUST_RAW_STRING, TC_FROMSTRING, SA_CENTER);
00087     }
00088   }
00089 
00090   virtual void UpdateWidgetSize(int widget, Dimension *size, const Dimension &padding, Dimension *fill, Dimension *resize)
00091   {
00092     if (widget != WID_LI_BACKGROUND) return;
00093 
00094     size->height = WD_TEXTPANEL_TOP + WD_TEXTPANEL_BOTTOM;
00095     for (uint i = 0; i < LAND_INFO_CENTERED_LINES; i++) {
00096       if (StrEmpty(this->landinfo_data[i])) break;
00097 
00098       uint width = GetStringBoundingBox(this->landinfo_data[i]).width + WD_FRAMETEXT_LEFT + WD_FRAMETEXT_RIGHT;
00099       size->width = max(size->width, width);
00100 
00101       size->height += FONT_HEIGHT_NORMAL + WD_PAR_VSEP_NORMAL;
00102       if (i == 0) size->height += 4;
00103     }
00104 
00105     if (!StrEmpty(this->landinfo_data[LAND_INFO_MULTICENTER_LINE])) {
00106       uint width = GetStringBoundingBox(this->landinfo_data[LAND_INFO_MULTICENTER_LINE]).width + WD_FRAMETEXT_LEFT + WD_FRAMETEXT_RIGHT;
00107       size->width = max(size->width, min(300u, width));
00108       SetDParamStr(0, this->landinfo_data[LAND_INFO_MULTICENTER_LINE]);
00109       size->height += GetStringHeight(STR_JUST_RAW_STRING, size->width - WD_FRAMETEXT_LEFT - WD_FRAMETEXT_RIGHT);
00110     }
00111   }
00112 
00113   LandInfoWindow(TileIndex tile) : Window(), tile(tile)
00114   {
00115     this->InitNested(&_land_info_desc);
00116 
00117 #if defined(_DEBUG)
00118 # define LANDINFOD_LEVEL 0
00119 #else
00120 # define LANDINFOD_LEVEL 1
00121 #endif
00122     DEBUG(misc, LANDINFOD_LEVEL, "TILE: %#x (%i,%i)", tile, TileX(tile), TileY(tile));
00123     DEBUG(misc, LANDINFOD_LEVEL, "type_height  = %#x", _m[tile].type_height);
00124     DEBUG(misc, LANDINFOD_LEVEL, "m1           = %#x", _m[tile].m1);
00125     DEBUG(misc, LANDINFOD_LEVEL, "m2           = %#x", _m[tile].m2);
00126     DEBUG(misc, LANDINFOD_LEVEL, "m3           = %#x", _m[tile].m3);
00127     DEBUG(misc, LANDINFOD_LEVEL, "m4           = %#x", _m[tile].m4);
00128     DEBUG(misc, LANDINFOD_LEVEL, "m5           = %#x", _m[tile].m5);
00129     DEBUG(misc, LANDINFOD_LEVEL, "m6           = %#x", _m[tile].m6);
00130     DEBUG(misc, LANDINFOD_LEVEL, "m7           = %#x", _me[tile].m7);
00131 #undef LANDINFOD_LEVEL
00132   }
00133 
00134   virtual void OnInit()
00135   {
00136     Town *t = ClosestTownFromTile(tile, _settings_game.economy.dist_local_authority);
00137 
00138     /* Because build_date is not set yet in every TileDesc, we make sure it is empty */
00139     TileDesc td;
00140 
00141     td.build_date = INVALID_DATE;
00142 
00143     /* Most tiles have only one owner, but
00144      *  - drivethrough roadstops can be build on town owned roads (up to 2 owners) and
00145      *  - roads can have up to four owners (railroad, road, tram, 3rd-roadtype "highway").
00146      */
00147     td.owner_type[0] = STR_LAND_AREA_INFORMATION_OWNER; // At least one owner is displayed, though it might be "N/A".
00148     td.owner_type[1] = STR_NULL;       // STR_NULL results in skipping the owner
00149     td.owner_type[2] = STR_NULL;
00150     td.owner_type[3] = STR_NULL;
00151     td.owner[0] = OWNER_NONE;
00152     td.owner[1] = OWNER_NONE;
00153     td.owner[2] = OWNER_NONE;
00154     td.owner[3] = OWNER_NONE;
00155 
00156     td.station_class = STR_NULL;
00157     td.station_name = STR_NULL;
00158     td.airport_class = STR_NULL;
00159     td.airport_name = STR_NULL;
00160     td.airport_tile_name = STR_NULL;
00161     td.rail_speed = 0;
00162 
00163     td.grf = NULL;
00164 
00165     CargoArray acceptance;
00166     AddAcceptedCargo(tile, acceptance, NULL);
00167     GetTileDesc(tile, &td);
00168 
00169     uint line_nr = 0;
00170 
00171     /* Tiletype */
00172     SetDParam(0, td.dparam[0]);
00173     GetString(this->landinfo_data[line_nr], td.str, lastof(this->landinfo_data[line_nr]));
00174     line_nr++;
00175 
00176     /* Up to four owners */
00177     for (uint i = 0; i < 4; i++) {
00178       if (td.owner_type[i] == STR_NULL) continue;
00179 
00180       SetDParam(0, STR_LAND_AREA_INFORMATION_OWNER_N_A);
00181       if (td.owner[i] != OWNER_NONE && td.owner[i] != OWNER_WATER) GetNameOfOwner(td.owner[i], tile);
00182       GetString(this->landinfo_data[line_nr], td.owner_type[i], lastof(this->landinfo_data[line_nr]));
00183       line_nr++;
00184     }
00185 
00186     /* Cost to clear/revenue when cleared */
00187     StringID str = STR_LAND_AREA_INFORMATION_COST_TO_CLEAR_N_A;
00188     Company *c = Company::GetIfValid(_local_company);
00189     if (c != NULL) {
00190       Money old_money = c->money;
00191       c->money = INT64_MAX;
00192       assert(_current_company == _local_company);
00193       CommandCost costclear = DoCommand(tile, 0, 0, DC_NONE, CMD_LANDSCAPE_CLEAR);
00194       c->money = old_money;
00195       if (costclear.Succeeded()) {
00196         Money cost = costclear.GetCost();
00197         if (cost < 0) {
00198           cost = -cost; // Negate negative cost to a positive revenue
00199           str = STR_LAND_AREA_INFORMATION_REVENUE_WHEN_CLEARED;
00200         } else {
00201           str = STR_LAND_AREA_INFORMATION_COST_TO_CLEAR;
00202         }
00203         SetDParam(0, cost);
00204       }
00205     }
00206     GetString(this->landinfo_data[line_nr], str, lastof(this->landinfo_data[line_nr]));
00207     line_nr++;
00208 
00209     /* Location */
00210     char tmp[16];
00211     snprintf(tmp, lengthof(tmp), "0x%.4X", tile);
00212     SetDParam(0, TileX(tile));
00213     SetDParam(1, TileY(tile));
00214     SetDParam(2, GetTileZ(tile));
00215     SetDParamStr(3, tmp);
00216     GetString(this->landinfo_data[line_nr], STR_LAND_AREA_INFORMATION_LANDINFO_COORDS, lastof(this->landinfo_data[line_nr]));
00217     line_nr++;
00218 
00219     /* Local authority */
00220     SetDParam(0, STR_LAND_AREA_INFORMATION_LOCAL_AUTHORITY_NONE);
00221     if (t != NULL) {
00222       SetDParam(0, STR_TOWN_NAME);
00223       SetDParam(1, t->index);
00224     }
00225     GetString(this->landinfo_data[line_nr], STR_LAND_AREA_INFORMATION_LOCAL_AUTHORITY, lastof(this->landinfo_data[line_nr]));
00226     line_nr++;
00227 
00228     /* Build date */
00229     if (td.build_date != INVALID_DATE) {
00230       SetDParam(0, td.build_date);
00231       GetString(this->landinfo_data[line_nr], STR_LAND_AREA_INFORMATION_BUILD_DATE, lastof(this->landinfo_data[line_nr]));
00232       line_nr++;
00233     }
00234 
00235     /* Station class */
00236     if (td.station_class != STR_NULL) {
00237       SetDParam(0, td.station_class);
00238       GetString(this->landinfo_data[line_nr], STR_LAND_AREA_INFORMATION_STATION_CLASS, lastof(this->landinfo_data[line_nr]));
00239       line_nr++;
00240     }
00241 
00242     /* Station type name */
00243     if (td.station_name != STR_NULL) {
00244       SetDParam(0, td.station_name);
00245       GetString(this->landinfo_data[line_nr], STR_LAND_AREA_INFORMATION_STATION_TYPE, lastof(this->landinfo_data[line_nr]));
00246       line_nr++;
00247     }
00248 
00249     /* Airport class */
00250     if (td.airport_class != STR_NULL) {
00251       SetDParam(0, td.airport_class);
00252       GetString(this->landinfo_data[line_nr], STR_LAND_AREA_INFORMATION_AIRPORT_CLASS, lastof(this->landinfo_data[line_nr]));
00253       line_nr++;
00254     }
00255 
00256     /* Airport name */
00257     if (td.airport_name != STR_NULL) {
00258       SetDParam(0, td.airport_name);
00259       GetString(this->landinfo_data[line_nr], STR_LAND_AREA_INFORMATION_AIRPORT_NAME, lastof(this->landinfo_data[line_nr]));
00260       line_nr++;
00261     }
00262 
00263     /* Airport tile name */
00264     if (td.airport_tile_name != STR_NULL) {
00265       SetDParam(0, td.airport_tile_name);
00266       GetString(this->landinfo_data[line_nr], STR_LAND_AREA_INFORMATION_AIRPORTTILE_NAME, lastof(this->landinfo_data[line_nr]));
00267       line_nr++;
00268     }
00269 
00270     /* Rail speed limit */
00271     if (td.rail_speed != 0) {
00272       SetDParam(0, td.rail_speed);
00273       GetString(this->landinfo_data[line_nr], STR_LANG_AREA_INFORMATION_RAIL_SPEED_LIMIT, lastof(this->landinfo_data[line_nr]));
00274       line_nr++;
00275     }
00276 
00277     /* NewGRF name */
00278     if (td.grf != NULL) {
00279       SetDParamStr(0, td.grf);
00280       GetString(this->landinfo_data[line_nr], STR_LAND_AREA_INFORMATION_NEWGRF_NAME, lastof(this->landinfo_data[line_nr]));
00281       line_nr++;
00282     }
00283 
00284     assert(line_nr < LAND_INFO_CENTERED_LINES);
00285 
00286     /* Mark last line empty */
00287     this->landinfo_data[line_nr][0] = '\0';
00288 
00289     /* Cargo acceptance is displayed in a extra multiline */
00290     char *strp = GetString(this->landinfo_data[LAND_INFO_MULTICENTER_LINE], STR_LAND_AREA_INFORMATION_CARGO_ACCEPTED, lastof(this->landinfo_data[LAND_INFO_MULTICENTER_LINE]));
00291     bool found = false;
00292 
00293     for (CargoID i = 0; i < NUM_CARGO; ++i) {
00294       if (acceptance[i] > 0) {
00295         /* Add a comma between each item. */
00296         if (found) {
00297           *strp++ = ',';
00298           *strp++ = ' ';
00299         }
00300         found = true;
00301 
00302         /* If the accepted value is less than 8, show it in 1/8:ths */
00303         if (acceptance[i] < 8) {
00304           SetDParam(0, acceptance[i]);
00305           SetDParam(1, CargoSpec::Get(i)->name);
00306           strp = GetString(strp, STR_LAND_AREA_INFORMATION_CARGO_EIGHTS, lastof(this->landinfo_data[LAND_INFO_MULTICENTER_LINE]));
00307         } else {
00308           strp = GetString(strp, CargoSpec::Get(i)->name, lastof(this->landinfo_data[LAND_INFO_MULTICENTER_LINE]));
00309         }
00310       }
00311     }
00312     if (!found) this->landinfo_data[LAND_INFO_MULTICENTER_LINE][0] = '\0';
00313   }
00314 
00315   virtual bool IsNewGRFInspectable() const
00316   {
00317     return ::IsNewGRFInspectable(GetGrfSpecFeature(this->tile), this->tile);
00318   }
00319 
00320   virtual void ShowNewGRFInspectWindow() const
00321   {
00322 		::ShowNewGRFInspectWindow(GetGrfSpecFeature(this->tile), this->tile);
00323   }
00324 
00330   virtual void OnInvalidateData(int data = 0, bool gui_scope = true)
00331   {
00332     if (!gui_scope) return;
00333     switch (data) {
00334       case 1:
00335         /* ReInit, "debug" sprite might have changed */
00336         this->ReInit();
00337         break;
00338     }
00339   }
00340 };
00341 
00346 void ShowLandInfo(TileIndex tile)
00347 {
00348   DeleteWindowById(WC_LAND_INFO, 0);
00349   new LandInfoWindow(tile);
00350 }
00351 
00352 static const NWidgetPart _nested_about_widgets[] = {
00353   NWidget(NWID_HORIZONTAL),
00354     NWidget(WWT_CLOSEBOX, COLOUR_GREY),
00355     NWidget(WWT_CAPTION, COLOUR_GREY), SetDataTip(STR_ABOUT_OPENTTD, STR_TOOLTIP_WINDOW_TITLE_DRAG_THIS),
00356   EndContainer(),
00357   NWidget(WWT_PANEL, COLOUR_GREY), SetPIP(4, 2, 4),
00358     NWidget(WWT_LABEL, COLOUR_GREY), SetDataTip(STR_ABOUT_ORIGINAL_COPYRIGHT, STR_NULL),
00359     NWidget(WWT_LABEL, COLOUR_GREY), SetDataTip(STR_ABOUT_VERSION, STR_NULL),
00360     NWidget(WWT_FRAME, COLOUR_GREY), SetPadding(0, 5, 1, 5),
00361       NWidget(WWT_EMPTY, INVALID_COLOUR, WID_A_SCROLLING_TEXT),
00362     EndContainer(),
00363     NWidget(WWT_LABEL, COLOUR_GREY, WID_A_WEBSITE), SetDataTip(STR_BLACK_RAW_STRING, STR_NULL),
00364     NWidget(WWT_LABEL, COLOUR_GREY), SetDataTip(STR_ABOUT_COPYRIGHT_OPENTTD, STR_NULL),
00365   EndContainer(),
00366 };
00367 
00368 static const WindowDesc _about_desc(
00369   WDP_CENTER, 0, 0,
00370   WC_GAME_OPTIONS, WC_NONE,
00371   0,
00372   _nested_about_widgets, lengthof(_nested_about_widgets)
00373 );
00374 
00375 static const char * const _credits[] = {
00376   "Original design by Chris Sawyer",
00377   "Original graphics by Simon Foster",
00378   "",
00379   "The OpenTTD team (in alphabetical order):",
00380   "  Albert Hofkamp (Alberth) - GUI expert",
00381   "  Jean-Fran\xC3\xA7ois Claeys (Belugas) - GUI, newindustries and more",
00382   "  Matthijs Kooijman (blathijs) - Pathfinder-guru, pool rework",
00383   "  Christoph Elsenhans (frosch) - General coding",
00384   "  Lo\xC3\xAF""c Guilloux (glx) - Windows Expert",
00385   "  Michael Lutz (michi_cc) - Path based signals",
00386   "  Owen Rudge (orudge) - Forum host, OS/2 port",
00387   "  Peter Nelson (peter1138) - Spiritual descendant from NewGRF gods",
00388   "  Ingo von Borstel (planetmaker) - Support",
00389   "  Remko Bijker (Rubidium) - Lead coder and way more",
00390   "  Zden\xC4\x9Bk Sojka (SmatZ) - Bug finder and fixer",
00391   "  Jos\xC3\xA9 Soler (Terkhen) - General coding",
00392   "  Thijs Marinussen (Yexo) - AI Framework",
00393   "  Leif Linse (Zuu) - AI/Game Script",
00394   "",
00395   "Inactive Developers:",
00396   "  Bjarni Corfitzen (Bjarni) - MacOSX port, coder and vehicles",
00397   "  Victor Fischer (Celestar) - Programming everywhere you need him to",
00398   "  Tam\xC3\xA1s Farag\xC3\xB3 (Darkvater) - Ex-Lead coder",
00399   "  Jaroslav Mazanec (KUDr) - YAPG (Yet Another Pathfinder God) ;)",
00400   "  Jonathan Coome (Maedhros) - High priest of the NewGRF Temple",
00401   "  Attila B\xC3\xA1n (MiHaMiX) - Developer WebTranslator 1 and 2",
00402   "  Christoph Mallon (Tron) - Programmer, code correctness police",
00403   "",
00404   "Retired Developers:",
00405   "  Ludvig Strigeus (ludde) - OpenTTD author, main coder (0.1 - 0.3.3)",
00406   "  Serge Paquet (vurlix) - Assistant project manager, coder (0.1 - 0.3.3)",
00407   "  Dominik Scherer (dominik81) - Lead programmer, GUI expert (0.3.0 - 0.3.6)",
00408   "  Benedikt Br\xC3\xBCggemeier (skidd13) - Bug fixer and code reworker",
00409   "  Patric Stout (TrueBrain) - NoProgrammer (0.3 - 1.2), sys op (active)",
00410   "",
00411   "Special thanks go out to:",
00412   "  Josef Drexler - For his great work on TTDPatch",
00413   "  Marcin Grzegorczyk - For describing Transport Tycoon Deluxe internals",
00414   "  Petr Baudi\xC5\xA1 (pasky) - Many patches, newGRF support",
00415   "  Simon Sasburg (HackyKid) - Many bugfixes he has blessed us with",
00416   "  Stefan Mei\xC3\x9Fner (sign_de) - For his work on the console",
00417   "  Mike Ragsdale - OpenTTD installer",
00418   "  Cian Duffy (MYOB) - BeOS port / manual writing",
00419   "  Christian Rosentreter (tokai) - MorphOS / AmigaOS port",
00420   "  Richard Kempton (richK) - additional airports, initial TGP implementation",
00421   "",
00422   "  Alberto Demichelis - Squirrel scripting language \xC2\xA9 2003-2008",
00423   "  L. Peter Deutsch - MD5 implementation \xC2\xA9 1999, 2000, 2002",
00424   "  Michael Blunck - Pre-signals and semaphores \xC2\xA9 2003",
00425   "  George - Canal/Lock graphics \xC2\xA9 2003-2004",
00426   "  Andrew Parkhouse (andythenorth) - River graphics",
00427   "  David Dallaston (Pikka) - Tram tracks",
00428   "  Marcin Grzegorczyk - Foundations for tracks on slopes",
00429   "  All Translators - Who made OpenTTD a truly international game",
00430   "  Bug Reporters - Without whom OpenTTD would still be full of bugs!",
00431   "",
00432   "",
00433   "And last but not least:",
00434   "  Chris Sawyer - For an amazing game!"
00435 };
00436 
00437 struct AboutWindow : public Window {
00438   int text_position;                       
00439   byte counter;                            
00440   int line_height;                         
00441   static const int num_visible_lines = 19; 
00442 
00443   AboutWindow() : Window()
00444   {
00445     this->InitNested(&_about_desc, WN_GAME_OPTIONS_ABOUT);
00446 
00447     this->counter = 5;
00448     this->text_position = this->GetWidget<NWidgetBase>(WID_A_SCROLLING_TEXT)->pos_y + this->GetWidget<NWidgetBase>(WID_A_SCROLLING_TEXT)->current_y;
00449   }
00450 
00451   virtual void SetStringParameters(int widget) const
00452   {
00453     if (widget == WID_A_WEBSITE) SetDParamStr(0, "Website: http://www.openttd.org");
00454   }
00455 
00456   virtual void UpdateWidgetSize(int widget, Dimension *size, const Dimension &padding, Dimension *fill, Dimension *resize)
00457   {
00458     if (widget != WID_A_SCROLLING_TEXT) return;
00459 
00460     this->line_height = FONT_HEIGHT_NORMAL;
00461 
00462     Dimension d;
00463     d.height = this->line_height * num_visible_lines;
00464 
00465     d.width = 0;
00466     for (uint i = 0; i < lengthof(_credits); i++) {
00467       d.width = max(d.width, GetStringBoundingBox(_credits[i]).width);
00468     }
00469     *size = maxdim(*size, d);
00470   }
00471 
00472   virtual void DrawWidget(const Rect &r, int widget) const
00473   {
00474     if (widget != WID_A_SCROLLING_TEXT) return;
00475 
00476     int y = this->text_position;
00477 
00478     /* Show all scrolling _credits */
00479     for (uint i = 0; i < lengthof(_credits); i++) {
00480       if (y >= r.top + 7 && y < r.bottom - this->line_height) {
00481         DrawString(r.left, r.right, y, _credits[i], TC_BLACK, SA_LEFT | SA_FORCE);
00482       }
00483       y += this->line_height;
00484     }
00485   }
00486 
00487   virtual void OnTick()
00488   {
00489     if (--this->counter == 0) {
00490       this->counter = 5;
00491       this->text_position--;
00492       /* If the last text has scrolled start a new from the start */
00493       if (this->text_position < (int)(this->GetWidget<NWidgetBase>(WID_A_SCROLLING_TEXT)->pos_y - lengthof(_credits) * this->line_height)) {
00494         this->text_position = this->GetWidget<NWidgetBase>(WID_A_SCROLLING_TEXT)->pos_y + this->GetWidget<NWidgetBase>(WID_A_SCROLLING_TEXT)->current_y;
00495       }
00496       this->SetDirty();
00497     }
00498   }
00499 };
00500 
00501 void ShowAboutWindow()
00502 {
00503   DeleteWindowByClass(WC_GAME_OPTIONS);
00504   new AboutWindow();
00505 }
00506 
00513 void ShowEstimatedCostOrIncome(Money cost, int x, int y)
00514 {
00515   StringID msg = STR_MESSAGE_ESTIMATED_COST;
00516 
00517   if (cost < 0) {
00518     cost = -cost;
00519     msg = STR_MESSAGE_ESTIMATED_INCOME;
00520   }
00521   SetDParam(0, cost);
00522   ShowErrorMessage(msg, INVALID_STRING_ID, WL_INFO, x, y);
00523 }
00524 
00532 void ShowCostOrIncomeAnimation(int x, int y, int z, Money cost)
00533 {
00534   Point pt = RemapCoords(x, y, z);
00535   StringID msg = STR_INCOME_FLOAT_COST;
00536 
00537   if (cost < 0) {
00538     cost = -cost;
00539     msg = STR_INCOME_FLOAT_INCOME;
00540   }
00541   SetDParam(0, cost);
00542   AddTextEffect(msg, pt.x, pt.y, DAY_TICKS, TE_RISING);
00543 }
00544 
00552 void ShowFeederIncomeAnimation(int x, int y, int z, Money cost)
00553 {
00554   Point pt = RemapCoords(x, y, z);
00555 
00556   SetDParam(0, cost);
00557   AddTextEffect(STR_FEEDER, pt.x, pt.y, DAY_TICKS, TE_RISING);
00558 }
00559 
00569 TextEffectID ShowFillingPercent(int x, int y, int z, uint8 percent, StringID string)
00570 {
00571   Point pt = RemapCoords(x, y, z);
00572 
00573   assert(string != STR_NULL);
00574 
00575   SetDParam(0, percent);
00576   return AddTextEffect(string, pt.x, pt.y, 0, TE_STATIC);
00577 }
00578 
00584 void UpdateFillingPercent(TextEffectID te_id, uint8 percent, StringID string)
00585 {
00586   assert(string != STR_NULL);
00587 
00588   SetDParam(0, percent);
00589   UpdateTextEffect(te_id, string);
00590 }
00591 
00596 void HideFillingPercent(TextEffectID *te_id)
00597 {
00598   if (*te_id == INVALID_TE_ID) return;
00599 
00600   RemoveTextEffect(*te_id);
00601   *te_id = INVALID_TE_ID;
00602 }
00603 
00604 static const NWidgetPart _nested_tooltips_widgets[] = {
00605   NWidget(WWT_PANEL, COLOUR_GREY, WID_TT_BACKGROUND), SetMinimalSize(200, 32), EndContainer(),
00606 };
00607 
00608 static const WindowDesc _tool_tips_desc(
00609   WDP_MANUAL, 0, 0, // Coordinates and sizes are not used,
00610   WC_TOOLTIPS, WC_NONE,
00611   0,
00612   _nested_tooltips_widgets, lengthof(_nested_tooltips_widgets)
00613 );
00614 
00616 struct TooltipsWindow : public Window
00617 {
00618   StringID string_id;               
00619   byte paramcount;                  
00620   uint64 params[5];                 
00621   TooltipCloseCondition close_cond; 
00622 
00623   TooltipsWindow(Window *parent, StringID str, uint paramcount, const uint64 params[], TooltipCloseCondition close_tooltip) : Window()
00624   {
00625     this->parent = parent;
00626     this->string_id = str;
00627     assert_compile(sizeof(this->params[0]) == sizeof(params[0]));
00628     assert(paramcount <= lengthof(this->params));
00629     memcpy(this->params, params, sizeof(this->params[0]) * paramcount);
00630     this->paramcount = paramcount;
00631     this->close_cond = close_tooltip;
00632 
00633     this->InitNested(&_tool_tips_desc);
00634 
00635     CLRBITS(this->flags, WF_WHITE_BORDER);
00636   }
00637 
00638   virtual Point OnInitialPosition(const WindowDesc *desc, int16 sm_width, int16 sm_height, int window_number)
00639   {
00640     /* Find the free screen space between the main toolbar at the top, and the statusbar at the bottom.
00641      * Add a fixed distance 2 so the tooltip floats free from both bars.
00642      */
00643     int scr_top = GetMainViewTop() + 2;
00644     int scr_bot = GetMainViewBottom() - 2;
00645 
00646     Point pt;
00647 
00648     /* Correctly position the tooltip position, watch out for window and cursor size
00649      * Clamp value to below main toolbar and above statusbar. If tooltip would
00650      * go below window, flip it so it is shown above the cursor */
00651     pt.y = Clamp(_cursor.pos.y + _cursor.size.y + _cursor.offs.y + 5, scr_top, scr_bot);
00652     if (pt.y + sm_height > scr_bot) pt.y = min(_cursor.pos.y + _cursor.offs.y - 5, scr_bot) - sm_height;
00653     pt.x = sm_width >= _screen.width ? 0 : Clamp(_cursor.pos.x - (sm_width >> 1), 0, _screen.width - sm_width);
00654 
00655     return pt;
00656   }
00657 
00658   virtual void UpdateWidgetSize(int widget, Dimension *size, const Dimension &padding, Dimension *fill, Dimension *resize)
00659   {
00660     /* There is only one widget. */
00661     for (uint i = 0; i != this->paramcount; i++) SetDParam(i, this->params[i]);
00662 
00663     size->width  = min(GetStringBoundingBox(this->string_id).width, 194);
00664     size->height = GetStringHeight(this->string_id, size->width);
00665 
00666     /* Increase slightly to have some space around the box. */
00667     size->width  += 2 + WD_FRAMERECT_LEFT + WD_FRAMERECT_RIGHT;
00668     size->height += 2 + WD_FRAMERECT_TOP + WD_FRAMERECT_BOTTOM;
00669   }
00670 
00671   virtual void DrawWidget(const Rect &r, int widget) const
00672   {
00673     /* There is only one widget. */
00674     GfxFillRect(r.left, r.top, r.right, r.bottom, PC_BLACK);
00675     GfxFillRect(r.left + 1, r.top + 1, r.right - 1, r.bottom - 1, PC_LIGHT_YELLOW);
00676 
00677     for (uint arg = 0; arg < this->paramcount; arg++) {
00678       SetDParam(arg, this->params[arg]);
00679     }
00680     DrawStringMultiLine(r.left + WD_FRAMERECT_LEFT, r.right - WD_FRAMERECT_RIGHT, r.top + WD_FRAMERECT_TOP, r.bottom - WD_FRAMERECT_BOTTOM, this->string_id, TC_FROMSTRING, SA_CENTER);
00681   }
00682 
00683   virtual void OnMouseLoop()
00684   {
00685     /* Always close tooltips when the cursor is not in our window. */
00686     if (!_cursor.in_window) {
00687       delete this;
00688       return;
00689     }
00690 
00691     /* We can show tooltips while dragging tools. These are shown as long as
00692      * we are dragging the tool. Normal tooltips work with hover or rmb. */
00693     switch (this->close_cond) {
00694       case TCC_RIGHT_CLICK: if (!_right_button_down) delete this; break;
00695       case TCC_LEFT_CLICK: if (!_left_button_down) delete this; break;
00696       case TCC_HOVER: if (!_mouse_hovering) delete this; break;
00697     }
00698   }
00699 };
00700 
00709 void GuiShowTooltips(Window *parent, StringID str, uint paramcount, const uint64 params[], TooltipCloseCondition close_tooltip)
00710 {
00711   DeleteWindowById(WC_TOOLTIPS, 0);
00712 
00713   if (str == STR_NULL) return;
00714 
00715   new TooltipsWindow(parent, str, paramcount, params, close_tooltip);
00716 }
00717 
00718 HandleEditBoxResult QueryString::HandleEditBoxKey(Window *w, int wid, uint16 key, uint16 keycode, EventState &state)
00719 {
00720   if (!w->IsWidgetGloballyFocused(wid)) return HEBR_NOT_FOCUSED;
00721 
00722   state = ES_HANDLED;
00723 
00724   bool edited = false;
00725 
00726   switch (keycode) {
00727     case WKC_ESC: return HEBR_CANCEL;
00728 
00729     case WKC_RETURN: case WKC_NUM_ENTER: return HEBR_CONFIRM;
00730 
00731 #ifdef WITH_COCOA
00732     case (WKC_META | 'V'):
00733 #endif
00734     case (WKC_CTRL | 'V'):
00735       edited = this->text.InsertClipboard();
00736       break;
00737 
00738 #ifdef WITH_COCOA
00739     case (WKC_META | 'U'):
00740 #endif
00741     case (WKC_CTRL | 'U'):
00742       this->text.DeleteAll();
00743       edited = true;
00744       break;
00745 
00746     case WKC_BACKSPACE: case WKC_DELETE:
00747     case WKC_CTRL | WKC_BACKSPACE: case WKC_CTRL | WKC_DELETE:
00748       edited = this->text.DeleteChar(keycode);
00749       break;
00750 
00751     case WKC_LEFT: case WKC_RIGHT: case WKC_END: case WKC_HOME:
00752     case WKC_CTRL | WKC_LEFT: case WKC_CTRL | WKC_RIGHT:
00753       this->text.MovePos(keycode);
00754       break;
00755 
00756     default:
00757       if (IsValidChar(key, this->afilter)) {
00758         edited = this->text.InsertChar(key);
00759       } else {
00760         state = ES_NOT_HANDLED;
00761       }
00762       break;
00763   }
00764 
00765   return edited ? HEBR_EDITING : HEBR_CURSOR;
00766 }
00767 
00768 void QueryString::HandleEditBox(Window *w, int wid)
00769 {
00770   if (w->IsWidgetGloballyFocused(wid) && this->text.HandleCaret()) {
00771     w->SetWidgetDirty(wid);
00772 
00773     /* For the OSK also invalidate the parent window */
00774     if (w->window_class == WC_OSK) w->InvalidateData();
00775   }
00776 }
00777 
00778 void QueryString::DrawEditBox(const Window *w, int wid) const
00779 {
00780   const NWidgetLeaf *wi = w->GetWidget<NWidgetLeaf>(wid);
00781 
00782   assert((wi->type & WWT_MASK) == WWT_EDITBOX);
00783 
00784   bool rtl = _current_text_dir == TD_RTL;
00785   Dimension sprite_size = GetSpriteSize(rtl ? SPR_IMG_DELETE_RIGHT : SPR_IMG_DELETE_LEFT);
00786   int clearbtn_width = sprite_size.width + WD_IMGBTN_LEFT + WD_IMGBTN_RIGHT;
00787 
00788   int clearbtn_left  = wi->pos_x + (rtl ? 0 : wi->current_x - clearbtn_width);
00789   int clearbtn_right = wi->pos_x + (rtl ? clearbtn_width : wi->current_x) - 1;
00790   int left   = wi->pos_x + (rtl ? clearbtn_width : 0);
00791   int right  = wi->pos_x + (rtl ? wi->current_x : wi->current_x - clearbtn_width) - 1;
00792 
00793   int top    = wi->pos_y;
00794   int bottom = wi->pos_y + wi->current_y - 1;
00795 
00796   DrawFrameRect(clearbtn_left, top, clearbtn_right, bottom, wi->colour, wi->IsLowered() ? FR_LOWERED : FR_NONE);
00797   DrawSprite(rtl ? SPR_IMG_DELETE_RIGHT : SPR_IMG_DELETE_LEFT, PAL_NONE, clearbtn_left + WD_IMGBTN_LEFT + (wi->IsLowered() ? 1 : 0), (top + bottom - sprite_size.height) / 2 + (wi->IsLowered() ? 1 : 0));
00798   if (this->text.bytes == 1) GfxFillRect(clearbtn_left + 1, top + 1, clearbtn_right - 1, bottom - 1, _colour_gradient[wi->colour & 0xF][2], FILLRECT_CHECKER);
00799 
00800   DrawFrameRect(left, top, right, bottom, wi->colour, FR_LOWERED | FR_DARKENED);
00801   GfxFillRect(left + 1, top + 1, right - 1, bottom - 1, PC_BLACK);
00802 
00803   /* Limit the drawing of the string inside the widget boundaries */
00804   DrawPixelInfo dpi;
00805   if (!FillDrawPixelInfo(&dpi, left + WD_FRAMERECT_LEFT, top + WD_FRAMERECT_TOP, right - left - WD_FRAMERECT_RIGHT, bottom - top - WD_FRAMERECT_BOTTOM)) return;
00806 
00807   DrawPixelInfo *old_dpi = _cur_dpi;
00808   _cur_dpi = &dpi;
00809 
00810   /* We will take the current widget length as maximum width, with a small
00811    * space reserved at the end for the caret to show */
00812   const Textbuf *tb = &this->text;
00813   int delta = min(0, (right - left) - tb->pixels - 10);
00814 
00815   if (tb->caretxoffs + delta < 0) delta = -tb->caretxoffs;
00816 
00817   DrawString(delta, tb->pixels, 0, tb->buf, TC_YELLOW);
00818   bool focussed = w->IsWidgetGloballyFocused(wid) || IsOSKOpenedFor(w, wid);
00819   if (focussed && tb->caret) {
00820     int caret_width = GetStringBoundingBox("_").width;
00821     DrawString(tb->caretxoffs + delta, tb->caretxoffs + delta + caret_width, 0, "_", TC_WHITE);
00822   }
00823 
00824   _cur_dpi = old_dpi;
00825 }
00826 
00827 void QueryString::ClickEditBox(Window *w, Point pt, int wid, int click_count, bool focus_changed)
00828 {
00829   const NWidgetLeaf *wi = w->GetWidget<NWidgetLeaf>(wid);
00830 
00831   assert((wi->type & WWT_MASK) == WWT_EDITBOX);
00832 
00833   bool rtl = _current_text_dir == TD_RTL;
00834   int clearbtn_width = GetSpriteSize(rtl ? SPR_IMG_DELETE_RIGHT : SPR_IMG_DELETE_LEFT).width;
00835 
00836   int clearbtn_left  = wi->pos_x + (rtl ? 0 : wi->current_x - clearbtn_width);
00837 
00838   if (IsInsideBS(pt.x, clearbtn_left, clearbtn_width)) {
00839     if (this->text.bytes > 1) {
00840       this->text.DeleteAll();
00841       w->HandleButtonClick(wid);
00842       w->OnEditboxChanged(wid);
00843     }
00844     return;
00845   }
00846 
00847   if (w->window_class != WC_OSK && _settings_client.gui.osk_activation != OSKA_DISABLED &&
00848     (!focus_changed || _settings_client.gui.osk_activation == OSKA_IMMEDIATELY) &&
00849     (click_count == 2 || _settings_client.gui.osk_activation != OSKA_DOUBLE_CLICK)) {
00850     /* Open the OSK window */
00851     ShowOnScreenKeyboard(w, wid);
00852   }
00853 }
00854 
00856 struct QueryStringWindow : public Window
00857 {
00858   QueryString editbox;    
00859   QueryStringFlags flags; 
00860 
00861   QueryStringWindow(StringID str, StringID caption, uint max_bytes, uint max_chars, const WindowDesc *desc, Window *parent, CharSetFilter afilter, QueryStringFlags flags) :
00862       editbox(max_bytes, max_chars)
00863   {
00864     char *last_of = &this->editbox.text.buf[this->editbox.text.max_bytes - 1];
00865     GetString(this->editbox.text.buf, str, last_of);
00866     str_validate(this->editbox.text.buf, last_of, SVS_NONE);
00867 
00868     /* Make sure the name isn't too long for the text buffer in the number of
00869      * characters (not bytes). max_chars also counts the '\0' characters. */
00870     while (Utf8StringLength(this->editbox.text.buf) + 1 > this->editbox.text.max_chars) {
00871       *Utf8PrevChar(this->editbox.text.buf + strlen(this->editbox.text.buf)) = '\0';
00872     }
00873 
00874     this->editbox.text.UpdateSize();
00875 
00876     if ((flags & QSF_ACCEPT_UNCHANGED) == 0) this->editbox.orig = strdup(this->editbox.text.buf);
00877 
00878     this->querystrings[WID_QS_TEXT] = &this->editbox;
00879     this->editbox.caption = caption;
00880     this->editbox.cancel_button = WID_QS_CANCEL;
00881     this->editbox.ok_button = WID_QS_OK;
00882     this->editbox.afilter = afilter;
00883     this->flags = flags;
00884 
00885     this->InitNested(desc, WN_QUERY_STRING);
00886 
00887     this->parent = parent;
00888 
00889     this->SetFocusedWidget(WID_QS_TEXT);
00890   }
00891 
00892   virtual void UpdateWidgetSize(int widget, Dimension *size, const Dimension &padding, Dimension *fill, Dimension *resize)
00893   {
00894     if (widget == WID_QS_DEFAULT && (this->flags & QSF_ENABLE_DEFAULT) == 0) {
00895       /* We don't want this widget to show! */
00896       fill->width = 0;
00897       resize->width = 0;
00898       size->width = 0;
00899     }
00900   }
00901 
00902   virtual void SetStringParameters(int widget) const
00903   {
00904     if (widget == WID_QS_CAPTION) SetDParam(0, this->editbox.caption);
00905   }
00906 
00907   void OnOk()
00908   {
00909     if (this->editbox.orig == NULL || strcmp(this->editbox.text.buf, this->editbox.orig) != 0) {
00910       /* If the parent is NULL, the editbox is handled by general function
00911        * HandleOnEditText */
00912       if (this->parent != NULL) {
00913         this->parent->OnQueryTextFinished(this->editbox.text.buf);
00914       } else {
00915         HandleOnEditText(this->editbox.text.buf);
00916       }
00917       this->editbox.handled = true;
00918     }
00919   }
00920 
00921   virtual void OnClick(Point pt, int widget, int click_count)
00922   {
00923     switch (widget) {
00924       case WID_QS_DEFAULT:
00925         this->editbox.text.DeleteAll();
00926         /* FALL THROUGH */
00927       case WID_QS_OK:
00928         this->OnOk();
00929         /* FALL THROUGH */
00930       case WID_QS_CANCEL:
00931         delete this;
00932         break;
00933     }
00934   }
00935 
00936   ~QueryStringWindow()
00937   {
00938     if (!this->editbox.handled && this->parent != NULL) {
00939       Window *parent = this->parent;
00940       this->parent = NULL; // so parent doesn't try to delete us again
00941       parent->OnQueryTextFinished(NULL);
00942     }
00943   }
00944 };
00945 
00946 static const NWidgetPart _nested_query_string_widgets[] = {
00947   NWidget(NWID_HORIZONTAL),
00948     NWidget(WWT_CLOSEBOX, COLOUR_GREY),
00949     NWidget(WWT_CAPTION, COLOUR_GREY, WID_QS_CAPTION), SetDataTip(STR_WHITE_STRING, STR_NULL),
00950   EndContainer(),
00951   NWidget(WWT_PANEL, COLOUR_GREY),
00952     NWidget(WWT_EDITBOX, COLOUR_GREY, WID_QS_TEXT), SetMinimalSize(256, 12), SetFill(1, 1), SetPadding(2, 2, 2, 2),
00953   EndContainer(),
00954   NWidget(NWID_HORIZONTAL, NC_EQUALSIZE),
00955     NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_QS_DEFAULT), SetMinimalSize(87, 12), SetFill(1, 1), SetDataTip(STR_BUTTON_DEFAULT, STR_NULL),
00956     NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_QS_CANCEL), SetMinimalSize(86, 12), SetFill(1, 1), SetDataTip(STR_BUTTON_CANCEL, STR_NULL),
00957     NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_QS_OK), SetMinimalSize(87, 12), SetFill(1, 1), SetDataTip(STR_BUTTON_OK, STR_NULL),
00958   EndContainer(),
00959 };
00960 
00961 static const WindowDesc _query_string_desc(
00962   WDP_CENTER, 0, 0,
00963   WC_QUERY_STRING, WC_NONE,
00964   0,
00965   _nested_query_string_widgets, lengthof(_nested_query_string_widgets)
00966 );
00967 
00978 void ShowQueryString(StringID str, StringID caption, uint maxsize, Window *parent, CharSetFilter afilter, QueryStringFlags flags)
00979 {
00980   DeleteWindowByClass(WC_QUERY_STRING);
00981   new QueryStringWindow(str, caption, ((flags & QSF_LEN_IN_CHARS) ? MAX_CHAR_LENGTH : 1) * maxsize, maxsize, &_query_string_desc, parent, afilter, flags);
00982 }
00983 
00987 struct QueryWindow : public Window {
00988   QueryCallbackProc *proc; 
00989   uint64 params[10];       
00990   StringID message;        
00991   StringID caption;        
00992 
00993   QueryWindow(const WindowDesc *desc, StringID caption, StringID message, Window *parent, QueryCallbackProc *callback) : Window()
00994   {
00995     /* Create a backup of the variadic arguments to strings because it will be
00996      * overridden pretty often. We will copy these back for drawing */
00997     CopyOutDParam(this->params, 0, lengthof(this->params));
00998     this->caption = caption;
00999     this->message = message;
01000     this->proc    = callback;
01001 
01002     this->InitNested(desc, WN_CONFIRM_POPUP_QUERY);
01003 
01004     this->parent = parent;
01005     this->left = parent->left + (parent->width / 2) - (this->width / 2);
01006     this->top = parent->top + (parent->height / 2) - (this->height / 2);
01007   }
01008 
01009   ~QueryWindow()
01010   {
01011     if (this->proc != NULL) this->proc(this->parent, false);
01012   }
01013 
01014   virtual void SetStringParameters(int widget) const
01015   {
01016     switch (widget) {
01017       case WID_Q_CAPTION:
01018         CopyInDParam(1, this->params, lengthof(this->params));
01019         SetDParam(0, this->caption);
01020         break;
01021 
01022       case WID_Q_TEXT:
01023         CopyInDParam(0, this->params, lengthof(this->params));
01024         break;
01025     }
01026   }
01027 
01028   virtual void UpdateWidgetSize(int widget, Dimension *size, const Dimension &padding, Dimension *fill, Dimension *resize)
01029   {
01030     if (widget != WID_Q_TEXT) return;
01031 
01032     Dimension d = GetStringMultiLineBoundingBox(this->message, *size);
01033     d.width += WD_FRAMETEXT_LEFT + WD_FRAMETEXT_RIGHT;
01034     d.height += WD_FRAMERECT_TOP + WD_FRAMERECT_BOTTOM;
01035     *size = d;
01036   }
01037 
01038   virtual void DrawWidget(const Rect &r, int widget) const
01039   {
01040     if (widget != WID_Q_TEXT) return;
01041 
01042     DrawStringMultiLine(r.left + WD_FRAMETEXT_LEFT, r.right - WD_FRAMETEXT_RIGHT, r.top + WD_FRAMERECT_TOP, r.bottom - WD_FRAMERECT_BOTTOM,
01043         this->message, TC_FROMSTRING, SA_CENTER);
01044   }
01045 
01046   virtual void OnClick(Point pt, int widget, int click_count)
01047   {
01048     switch (widget) {
01049       case WID_Q_YES: {
01050         /* in the Generate New World window, clicking 'Yes' causes
01051          * DeleteNonVitalWindows() to be called - we shouldn't be in a window then */
01052         QueryCallbackProc *proc = this->proc;
01053         Window *parent = this->parent;
01054         /* Prevent the destructor calling the callback function */
01055         this->proc = NULL;
01056         delete this;
01057         if (proc != NULL) {
01058           proc(parent, true);
01059           proc = NULL;
01060         }
01061         break;
01062       }
01063       case WID_Q_NO:
01064         delete this;
01065         break;
01066     }
01067   }
01068 
01069   virtual EventState OnKeyPress(uint16 key, uint16 keycode)
01070   {
01071     /* ESC closes the window, Enter confirms the action */
01072     switch (keycode) {
01073       case WKC_RETURN:
01074       case WKC_NUM_ENTER:
01075         if (this->proc != NULL) {
01076           this->proc(this->parent, true);
01077           this->proc = NULL;
01078         }
01079         /* FALL THROUGH */
01080       case WKC_ESC:
01081         delete this;
01082         return ES_HANDLED;
01083     }
01084     return ES_NOT_HANDLED;
01085   }
01086 };
01087 
01088 static const NWidgetPart _nested_query_widgets[] = {
01089   NWidget(NWID_HORIZONTAL),
01090     NWidget(WWT_CLOSEBOX, COLOUR_RED),
01091     NWidget(WWT_CAPTION, COLOUR_RED, WID_Q_CAPTION), SetDataTip(STR_JUST_STRING, STR_NULL),
01092   EndContainer(),
01093   NWidget(WWT_PANEL, COLOUR_RED), SetPIP(8, 15, 8),
01094     NWidget(WWT_TEXT, COLOUR_RED, WID_Q_TEXT), SetMinimalSize(200, 12),
01095     NWidget(NWID_HORIZONTAL, NC_EQUALSIZE), SetPIP(20, 29, 20),
01096       NWidget(WWT_PUSHTXTBTN, COLOUR_YELLOW, WID_Q_NO), SetMinimalSize(71, 12), SetDataTip(STR_QUIT_NO, STR_NULL),
01097       NWidget(WWT_PUSHTXTBTN, COLOUR_YELLOW, WID_Q_YES), SetMinimalSize(71, 12), SetDataTip(STR_QUIT_YES, STR_NULL),
01098     EndContainer(),
01099   EndContainer(),
01100 };
01101 
01102 static const WindowDesc _query_desc(
01103   WDP_CENTER, 0, 0,
01104   WC_CONFIRM_POPUP_QUERY, WC_NONE,
01105   WDF_MODAL,
01106   _nested_query_widgets, lengthof(_nested_query_widgets)
01107 );
01108 
01118 void ShowQuery(StringID caption, StringID message, Window *parent, QueryCallbackProc *callback)
01119 {
01120   if (parent == NULL) parent = FindWindowById(WC_MAIN_WINDOW, 0);
01121 
01122   const Window *w;
01123   FOR_ALL_WINDOWS_FROM_BACK(w) {
01124     if (w->window_class != WC_CONFIRM_POPUP_QUERY) continue;
01125 
01126     const QueryWindow *qw = (const QueryWindow *)w;
01127     if (qw->parent != parent || qw->proc != callback) continue;
01128 
01129     delete qw;
01130     break;
01131   }
01132 
01133   new QueryWindow(&_query_desc, caption, message, parent, callback);
01134 }