# music_gui.cpp

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    00001 /* $Id: music_gui.cpp 21698 2011-01-02 18:12:39Z rubidium $ */
    00002
    00003 /*
    00004  * This file is part of OpenTTD.
    00005  * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
    00006  * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
    00007  * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
    00008  */
    00009
    00012 #include "stdafx.h"
    00013 #include "openttd.h"
    00014 #include "base_media_base.h"
    00015 #include "music/music_driver.hpp"
    00016 #include "window_gui.h"
    00017 #include "strings_func.h"
    00018 #include "window_func.h"
    00019 #include "sound_func.h"
    00020 #include "gfx_func.h"
    00021 #include "core/random_func.hpp"
    00022 #include "gui.h"
    00023 #include "core/geometry_func.hpp"
    00024 #include "string_func.h"
    00025
    00026 #include "table/strings.h"
    00027 #include "table/sprites.h"
    00028
    00034 static const char *GetSongName(int index)
    00035 {
    00036   return BaseMusic::GetUsedSet()->song_name[index];
    00037 }
    00038
    00044 static int GetTrackNumber(int index)
    00045 {
    00046   return BaseMusic::GetUsedSet()->track_nr[index];
    00047 }
    00048
    00050 static byte _music_wnd_cursong = 1;
    00052 static bool _song_is_active = false;
    00053
    00055 static byte _cur_playlist[NUM_SONGS_PLAYLIST + 1];
    00056
    00058 static byte _playlist_all[NUM_SONGS_AVAILABLE + 1];
    00060 static byte _playlist_old_style[NUM_SONGS_CLASS + 1];
    00062 static byte _playlist_new_style[NUM_SONGS_CLASS + 1];
    00064 static byte _playlist_ezy_street[NUM_SONGS_CLASS + 1];
    00065
    00066 assert_compile(lengthof(_msf.custom_1) == NUM_SONGS_PLAYLIST + 1);
    00067 assert_compile(lengthof(_msf.custom_2) == NUM_SONGS_PLAYLIST + 1);
    00068
    00070 static byte * const _playlists[] = {
    00071   _playlist_all,
    00072   _playlist_old_style,
    00073   _playlist_new_style,
    00074   _playlist_ezy_street,
    00075   _msf.custom_1,
    00076   _msf.custom_2,
    00077 };
    00078
    00083 void ValidatePlaylist(byte *playlist)
    00084 {
    00085   while (*playlist != 0) {
    00086     if (*playlist <= BaseMusic::GetUsedSet()->num_available) {
    00087       playlist++;
    00088       continue;
    00089     }
    00090     for (byte *p = playlist; *p != 0; p++) {
    00091       p[0] = p[1];
    00092     }
    00093   }
    00094 }
    00095
    00097 void InitializeMusic()
    00098 {
    00099   uint j = 0;
    00100   for (uint i = 0; i < NUM_SONGS_AVAILABLE; i++) {
    00101     if (StrEmpty(GetSongName(i))) continue;
    00102     _playlist_all[j++] = i + 1;
    00103   }
    00104   /* Terminate the list */
    00105   _playlist_all[j] = 0;
    00106
    00107   /* Now make the 'styled' playlists */
    00108   for (uint k = 0; k < NUM_SONG_CLASSES; k++) {
    00109     j = 0;
    00110     for (uint i = 0; i < NUM_SONGS_CLASS; i++) {
    00111       int id = k * NUM_SONGS_CLASS + i + 1;
    00112       if (StrEmpty(GetSongName(id))) continue;
    00113       _playlists[k + 1][j++] = id + 1;
    00114     }
    00115     /* Terminate the list */
    00116     _playlists[k + 1][j] = 0;
    00117   }
    00118
    00119   ValidatePlaylist(_msf.custom_1);
    00120   ValidatePlaylist(_msf.custom_2);
    00121
    00122   if (BaseMusic::GetUsedSet()->num_available < _music_wnd_cursong) {
    00123     /* If there are less songs than the currently played song,
    00124      * just pause and reset to no song. */
    00125     _music_wnd_cursong = 0;
    00126     _song_is_active = false;
    00127   }
    00128 }
    00129
    00130 static void SkipToPrevSong()
    00131 {
    00132   byte *b = _cur_playlist;
    00133   byte *p = b;
    00134   byte t;
    00135
    00136   if (b[0] == 0) return; // empty playlist
    00137
    00138   do p++; while (p[0] != 0); // find the end
    00139
    00140   t = *--p; // and copy the bytes
    00141   while (p != b) {
    00142     p--;
    00143     p[1] = p[0];
    00144   }
    00145   *b = t;
    00146
    00147   _song_is_active = false;
    00148 }
    00149
    00150 static void SkipToNextSong()
    00151 {
    00152   byte *b = _cur_playlist;
    00153   byte t;
    00154
    00155   t = b[0];
    00156   if (t != 0) {
    00157     while (b[1] != 0) {
    00158       b[0] = b[1];
    00159       b++;
    00160     }
    00161     b[0] = t;
    00162   }
    00163
    00164   _song_is_active = false;
    00165 }
    00166
    00167 static void MusicVolumeChanged(byte new_vol)
    00168 {
    00169   _music_driver->SetVolume(new_vol);
    00170 }
    00171
    00172 static void DoPlaySong()
    00173 {
    00174   char filename[MAX_PATH];
    00175   FioFindFullPath(filename, lengthof(filename), GM_DIR,
    00176       BaseMusic::GetUsedSet()->files[_music_wnd_cursong - 1].filename);
    00177   _music_driver->PlaySong(filename);
    00178   SetWindowDirty(WC_MUSIC_WINDOW, 0);
    00179 }
    00180
    00181 static void DoStopMusic()
    00182 {
    00183   _music_driver->StopSong();
    00184   SetWindowDirty(WC_MUSIC_WINDOW, 0);
    00185 }
    00186
    00187 static void SelectSongToPlay()
    00188 {
    00189   uint i = 0;
    00190   uint j = 0;
    00191
    00192   memset(_cur_playlist, 0, sizeof(_cur_playlist));
    00193   do {
    00194     const char *filename = BaseMusic::GetUsedSet()->files[_playlists[_msf.playlist][i] - 1].filename;
    00195     /* We are now checking for the existence of that file prior
    00196      * to add it to the list of available songs */
    00197     if (!StrEmpty(filename) && FioCheckFileExists(filename, GM_DIR)) {
    00198       _cur_playlist[j] = _playlists[_msf.playlist][i];
    00199       j++;
    00200     }
    00201   } while (_playlists[_msf.playlist][++i] != 0 && j < lengthof(_cur_playlist) - 1);
    00202
    00203   /* Do not shuffle when on the intro-start window, as the song to play has to be the original TTD Theme*/
    00204   if (_msf.shuffle && _game_mode != GM_MENU) {
    00205     i = 500;
    00206     do {
    00207       uint32 r = InteractiveRandom();
    00208       byte *a = &_cur_playlist[GB(r, 0, 5)];
    00209       byte *b = &_cur_playlist[GB(r, 8, 5)];
    00210
    00211       if (*a != 0 && *b != 0) {
    00212         byte t = *a;
    00213         *a = *b;
    00214         *b = t;
    00215       }
    00216     } while (--i);
    00217   }
    00218 }
    00219
    00220 static void StopMusic()
    00221 {
    00222   _music_wnd_cursong = 0;
    00223   DoStopMusic();
    00224   _song_is_active = false;
    00225   SetWindowWidgetDirty(WC_MUSIC_WINDOW, 0, 9);
    00226 }
    00227
    00228 static void PlayPlaylistSong()
    00229 {
    00230   if (_cur_playlist[0] == 0) {
    00231     SelectSongToPlay();
    00232     /* if there is not songs in the playlist, it may indicate
    00233      * no file on the gm folder, or even no gm folder.
    00234      * Stop the playback, then */
    00235     if (_cur_playlist[0] == 0) {
    00236       _song_is_active = false;
    00237       _music_wnd_cursong = 0;
    00238       _msf.playing = false;
    00239       return;
    00240     }
    00241   }
    00242   _music_wnd_cursong = _cur_playlist[0];
    00243   DoPlaySong();
    00244   _song_is_active = true;
    00245
    00246   SetWindowWidgetDirty(WC_MUSIC_WINDOW, 0, 9);
    00247 }
    00248
    00249 void ResetMusic()
    00250 {
    00251   _music_wnd_cursong = 1;
    00252   DoPlaySong();
    00253 }
    00254
    00255 void MusicLoop()
    00256 {
    00257   if (!_msf.playing && _song_is_active) {
    00258     StopMusic();
    00259   } else if (_msf.playing && !_song_is_active) {
    00260     PlayPlaylistSong();
    00261   }
    00262
    00263   if (!_song_is_active) return;
    00264
    00265   if (!_music_driver->IsSongPlaying()) {
    00266     if (_game_mode != GM_MENU) {
    00267       StopMusic();
    00268       SkipToNextSong();
    00269       PlayPlaylistSong();
    00270     } else {
    00271       ResetMusic();
    00272     }
    00273   }
    00274 }
    00275
    00276 static void SelectPlaylist(byte list)
    00277 {
    00278   _msf.playlist = list;
    00279   InvalidateWindowData(WC_MUSIC_TRACK_SELECTION, 0);
    00280   InvalidateWindowData(WC_MUSIC_WINDOW, 0);
    00281 }
    00282
    00283 enum MusicTrackSelectionWidgets {
    00284   MTSW_LIST_LEFT,
    00285   MTSW_PLAYLIST,
    00286   MTSW_LIST_RIGHT,
    00287   MTSW_ALL,
    00288   MTSW_OLD,
    00289   MTSW_NEW,
    00290   MTSW_EZY,
    00291   MTSW_CUSTOM1,
    00292   MTSW_CUSTOM2,
    00293   MTSW_CLEAR,
    00294 };
    00295
    00296 struct MusicTrackSelectionWindow : public Window {
    00297   MusicTrackSelectionWindow(const WindowDesc *desc, WindowNumber number) : Window()
    00298   {
    00299     this->InitNested(desc, number);
    00300     this->LowerWidget(MTSW_LIST_LEFT);
    00301     this->LowerWidget(MTSW_LIST_RIGHT);
    00302     this->SetWidgetDisabledState(MTSW_CLEAR, _msf.playlist <= 3);
    00303     this->LowerWidget(MTSW_ALL + _msf.playlist);
    00304   }
    00305
    00306   virtual void SetStringParameters(int widget) const
    00307   {
    00308     switch (widget) {
    00309       case MTSW_PLAYLIST:
    00310         SetDParam(0, STR_MUSIC_PLAYLIST_ALL + _msf.playlist);
    00311         break;
    00312     }
    00313   }
    00314
    00315   virtual void OnInvalidateData(int data = 0)
    00316   {
    00317     for (int i = 0; i < 6; i++) {
    00318       this->SetWidgetLoweredState(MTSW_ALL + i, i == _msf.playlist);
    00319     }
    00320     this->SetWidgetDisabledState(MTSW_CLEAR, _msf.playlist <= 3);
    00321     this->SetDirty();
    00322   }
    00323
    00324   virtual void UpdateWidgetSize(int widget, Dimension *size, const Dimension &padding, Dimension *fill, Dimension *resize)
    00325   {
    00326     switch (widget) {
    00327       case MTSW_PLAYLIST: {
    00328         Dimension d = {0, 0};
    00329
    00330         for (int i = 0; i < 6; i++) {
    00331           SetDParam(0, STR_MUSIC_PLAYLIST_ALL + i);
    00332           d = maxdim(d, GetStringBoundingBox(STR_PLAYLIST_PROGRAM));
    00333         }
    00334         d.width += padding.width;
    00335         d.height += padding.height;
    00336         *size = maxdim(*size, d);
    00337         break;
    00338       }
    00339
    00340       case MTSW_LIST_LEFT: case MTSW_LIST_RIGHT: {
    00341         Dimension d = {0, 0};
    00342
    00343         for (uint i = 0; i < NUM_SONGS_AVAILABLE; i++) {
    00344           const char *song_name = GetSongName(i);
    00345           if (StrEmpty(song_name)) continue;
    00346
    00347           SetDParam(0, GetTrackNumber(i));
    00348           SetDParam(1, 2);
    00349           SetDParamStr(2, GetSongName(i));
    00350           Dimension d2 = GetStringBoundingBox(STR_PLAYLIST_TRACK_NAME);
    00351           d.width = max(d.width, d2.width);
    00352           d.height += d2.height;
    00353         }
    00354         d.width += padding.width;
    00355         d.height += padding.height;
    00356         *size = maxdim(*size, d);
    00357         break;
    00358       }
    00359     }
    00360   }
    00361
    00362   virtual void DrawWidget(const Rect &r, int widget) const
    00363   {
    00364     switch (widget) {
    00365       case MTSW_LIST_LEFT: {
    00366         GfxFillRect(r.left + 1, r.top + 1, r.right - 1, r.bottom - 1, 0);
    00367
    00368         int y = r.top + WD_FRAMERECT_TOP;
    00369         for (uint i = 0; i < NUM_SONGS_AVAILABLE; i++) {
    00370           const char *song_name = GetSongName(i);
    00371           if (StrEmpty(song_name)) continue;
    00372
    00373           SetDParam(0, GetTrackNumber(i));
    00374           SetDParam(1, 2);
    00375           SetDParamStr(2, song_name);
    00376           DrawString(r.left + WD_FRAMERECT_LEFT, r.right - WD_FRAMERECT_RIGHT, y, STR_PLAYLIST_TRACK_NAME);
    00377           y += FONT_HEIGHT_SMALL;
    00378         }
    00379         break;
    00380       }
    00381
    00382       case MTSW_LIST_RIGHT: {
    00383         GfxFillRect(r.left + 1, r.top + 1, r.right - 1, r.bottom - 1, 0);
    00384
    00385         int y = r.top + WD_FRAMERECT_TOP;
    00386         for (const byte *p = _playlists[_msf.playlist]; *p != 0; p++) {
    00387           uint i = *p - 1;
    00388           SetDParam(0, GetTrackNumber(i));
    00389           SetDParam(1, 2);
    00390           SetDParamStr(2, GetSongName(i));
    00391           DrawString(r.left + WD_FRAMERECT_LEFT, r.right - WD_FRAMERECT_RIGHT, y, STR_PLAYLIST_TRACK_NAME);
    00392           y += FONT_HEIGHT_SMALL;
    00393         }
    00394         break;
    00395       }
    00396     }
    00397   }
    00398
    00399   virtual void OnClick(Point pt, int widget, int click_count)
    00400   {
    00401     switch (widget) {
    00402       case MTSW_LIST_LEFT: { // add to playlist
    00403         int y = this->GetRowFromWidget(pt.y, widget, 0, FONT_HEIGHT_SMALL);
    00404
    00405         if (_msf.playlist < 4) return;
    00406         if (!IsInsideMM(y, 0, BaseMusic::GetUsedSet()->num_available)) return;
    00407
    00408         byte *p = _playlists[_msf.playlist];
    00409         for (uint i = 0; i != NUM_SONGS_PLAYLIST - 1; i++) {
    00410           if (p[i] == 0) {
    00411             /* Find the actual song number */
    00412             for (uint j = 0; j < NUM_SONGS_AVAILABLE; j++) {
    00413               if (GetTrackNumber(j) == y + 1) {
    00414                 p[i] = j + 1;
    00415                 break;
    00416               }
    00417             }
    00418             p[i + 1] = 0;
    00419             this->SetDirty();
    00420             SelectSongToPlay();
    00421             break;
    00422           }
    00423         }
    00424         break;
    00425       }
    00426
    00427       case MTSW_LIST_RIGHT: { // remove from playlist
    00428         int y = this->GetRowFromWidget(pt.y, widget, 0, FONT_HEIGHT_SMALL);
    00429
    00430         if (_msf.playlist < 4) return;
    00431         if (!IsInsideMM(y, 0, NUM_SONGS_PLAYLIST)) return;
    00432
    00433         byte *p = _playlists[_msf.playlist];
    00434         for (uint i = y; i != NUM_SONGS_PLAYLIST - 1; i++) {
    00435           p[i] = p[i + 1];
    00436         }
    00437
    00438         this->SetDirty();
    00439         SelectSongToPlay();
    00440         break;
    00441       }
    00442
    00443       case MTSW_CLEAR: // clear
    00444         for (uint i = 0; _playlists[_msf.playlist][i] != 0; i++) _playlists[_msf.playlist][i] = 0;
    00445         this->SetDirty();
    00446         StopMusic();
    00447         SelectSongToPlay();
    00448         break;
    00449
    00450       case MTSW_ALL: case MTSW_OLD: case MTSW_NEW:
    00451       case MTSW_EZY: case MTSW_CUSTOM1: case MTSW_CUSTOM2: // set playlist
    00452         SelectPlaylist(widget - MTSW_ALL);
    00453         StopMusic();
    00454         SelectSongToPlay();
    00455         break;
    00456     }
    00457   }
    00458 };
    00459
    00460 static const NWidgetPart _nested_music_track_selection_widgets[] = {
    00461   NWidget(NWID_HORIZONTAL),
    00462     NWidget(WWT_CLOSEBOX, COLOUR_GREY),
    00463     NWidget(WWT_CAPTION, COLOUR_GREY), SetDataTip(STR_PLAYLIST_MUSIC_PROGRAM_SELECTION, STR_TOOLTIP_WINDOW_TITLE_DRAG_THIS),
    00464   EndContainer(),
    00465   NWidget(WWT_PANEL, COLOUR_GREY),
    00466     NWidget(NWID_HORIZONTAL), SetPIP(2, 4, 2),
    00467       /* Left panel. */
    00468       NWidget(NWID_VERTICAL),
    00469         NWidget(WWT_LABEL, COLOUR_GREY), SetDataTip(STR_PLAYLIST_TRACK_INDEX, STR_NULL),
    00470         NWidget(WWT_PANEL, COLOUR_GREY, MTSW_LIST_LEFT), SetMinimalSize(180, 194), SetDataTip(0x0, STR_PLAYLIST_TOOLTIP_CLICK_TO_ADD_TRACK), EndContainer(),
    00471         NWidget(NWID_SPACER), SetMinimalSize(0, 2),
    00472       EndContainer(),
    00473       /* Middle buttons. */
    00474       NWidget(NWID_VERTICAL),
    00475         NWidget(NWID_SPACER), SetMinimalSize(60, 30), // Space above the first button from the title bar.
    00476         NWidget(WWT_TEXTBTN, COLOUR_GREY, MTSW_ALL), SetFill(1, 0), SetDataTip(STR_MUSIC_PLAYLIST_ALL, STR_MUSIC_TOOLTIP_SELECT_ALL_TRACKS_PROGRAM),
    00477         NWidget(WWT_TEXTBTN, COLOUR_GREY, MTSW_OLD), SetFill(1, 0), SetDataTip(STR_MUSIC_PLAYLIST_OLD_STYLE, STR_MUSIC_TOOLTIP_SELECT_OLD_STYLE_MUSIC),
    00478         NWidget(WWT_TEXTBTN, COLOUR_GREY, MTSW_NEW), SetFill(1, 0), SetDataTip(STR_MUSIC_PLAYLIST_NEW_STYLE, STR_MUSIC_TOOLTIP_SELECT_NEW_STYLE_MUSIC),
    00479         NWidget(WWT_TEXTBTN, COLOUR_GREY, MTSW_EZY), SetFill(1, 0), SetDataTip(STR_MUSIC_PLAYLIST_EZY_STREET, STR_MUSIC_TOOLTIP_SELECT_EZY_STREET_STYLE),
    00480         NWidget(WWT_TEXTBTN, COLOUR_GREY, MTSW_CUSTOM1), SetFill(1, 0), SetDataTip(STR_MUSIC_PLAYLIST_CUSTOM_1, STR_MUSIC_TOOLTIP_SELECT_CUSTOM_1_USER_DEFINED),
    00481         NWidget(WWT_TEXTBTN, COLOUR_GREY, MTSW_CUSTOM2), SetFill(1, 0), SetDataTip(STR_MUSIC_PLAYLIST_CUSTOM_2, STR_MUSIC_TOOLTIP_SELECT_CUSTOM_2_USER_DEFINED),
    00482         NWidget(NWID_SPACER), SetMinimalSize(0, 16), // Space above 'clear' button
    00483         NWidget(WWT_PUSHTXTBTN, COLOUR_GREY, MTSW_CLEAR), SetFill(1, 0), SetDataTip(STR_PLAYLIST_CLEAR, STR_PLAYLIST_TOOLTIP_CLEAR_CURRENT_PROGRAM_CUSTOM1),
    00484         NWidget(NWID_SPACER), SetFill(0, 1),
    00485       EndContainer(),
    00486       /* Right panel. */
    00487       NWidget(NWID_VERTICAL),
    00488         NWidget(WWT_LABEL, COLOUR_GREY, MTSW_PLAYLIST), SetDataTip(STR_PLAYLIST_PROGRAM, STR_NULL),
    00489         NWidget(WWT_PANEL, COLOUR_GREY, MTSW_LIST_RIGHT), SetMinimalSize(180, 194), SetDataTip(0x0, STR_PLAYLIST_TOOLTIP_CLICK_TO_REMOVE_TRACK), EndContainer(),
    00490         NWidget(NWID_SPACER), SetMinimalSize(0, 2),
    00491       EndContainer(),
    00492     EndContainer(),
    00493   EndContainer(),
    00494 };
    00495
    00496 static const WindowDesc _music_track_selection_desc(
    00497   WDP_AUTO, 0, 0,
    00498   WC_MUSIC_TRACK_SELECTION, WC_NONE,
    00499   WDF_UNCLICK_BUTTONS,
    00500   _nested_music_track_selection_widgets, lengthof(_nested_music_track_selection_widgets)
    00501 );
    00502
    00503 static void ShowMusicTrackSelection()
    00504 {
    00505   AllocateWindowDescFront<MusicTrackSelectionWindow>(&_music_track_selection_desc, 0);
    00506 }
    00507
    00508 enum MusicWidgets {
    00509   MW_PREV,
    00510   MW_NEXT,
    00511   MW_STOP,
    00512   MW_PLAY,
    00513   MW_SLIDERS,
    00514   MW_MUSIC_VOL,
    00515   MW_GAUGE,
    00516   MW_EFFECT_VOL,
    00517   MW_BACKGROUND,
    00518   MW_TRACK,
    00519   MW_TRACK_NR,
    00520   MW_TRACK_TITLE,
    00521   MW_TRACK_NAME,
    00522   MW_SHUFFLE,
    00523   MW_PROGRAMME,
    00524   MW_ALL,
    00525   MW_OLD,
    00526   MW_NEW,
    00527   MW_EZY,
    00528   MW_CUSTOM1,
    00529   MW_CUSTOM2,
    00530 };
    00531
    00532 struct MusicWindow : public Window {
    00533   static const int slider_width = 3;
    00534
    00535   MusicWindow(const WindowDesc *desc, WindowNumber number) : Window()
    00536   {
    00537     this->InitNested(desc, number);
    00538     this->LowerWidget(_msf.playlist + MW_ALL);
    00539     this->SetWidgetLoweredState(MW_SHUFFLE, _msf.shuffle);
    00540   }
    00541
    00542   virtual void UpdateWidgetSize(int widget, Dimension *size, const Dimension &padding, Dimension *fill, Dimension *resize)
    00543   {
    00544     switch (widget) {
    00545       /* Make sure that MW_SHUFFLE and MW_PROGRAMME have the same size.
    00546        * This can't be done by using NC_EQUALSIZE as the MW_INFO is
    00547        * between those widgets and of different size. */
    00548       case MW_SHUFFLE: case MW_PROGRAMME: {
    00549         Dimension d = maxdim(GetStringBoundingBox(STR_MUSIC_PROGRAM), GetStringBoundingBox(STR_MUSIC_SHUFFLE));
    00550         d.width += padding.width;
    00551         d.height += padding.height;
    00552         *size = maxdim(*size, d);
    00553         break;
    00554       }
    00555
    00556       case MW_TRACK_NR: {
    00557         Dimension d = GetStringBoundingBox(STR_MUSIC_TRACK_NONE);
    00558         d.width += WD_FRAMERECT_LEFT + WD_FRAMERECT_RIGHT;
    00559         d.height += WD_FRAMERECT_TOP + WD_FRAMERECT_BOTTOM;
    00560         *size = maxdim(*size, d);
    00561         break;
    00562       }
    00563
    00564       case MW_TRACK_NAME: {
    00565         Dimension d = GetStringBoundingBox(STR_MUSIC_TITLE_NONE);
    00566         for (uint i = 0; i < NUM_SONGS_AVAILABLE; i++) {
    00567           SetDParamStr(0, GetSongName(i));
    00568           d = maxdim(d, GetStringBoundingBox(STR_MUSIC_TITLE_NAME));
    00569         }
    00570         d.width += WD_FRAMERECT_LEFT + WD_FRAMERECT_RIGHT;
    00571         d.height += WD_FRAMERECT_TOP + WD_FRAMERECT_BOTTOM;
    00572         *size = maxdim(*size, d);
    00573         break;
    00574       }
    00575
    00576       /* Hack-ish: set the proper widget data; only needs to be done once
    00577        * per (Re)Init as that's the only time the language changes. */
    00578       case MW_PREV: this->GetWidget<NWidgetCore>(MW_PREV)->widget_data = _current_text_dir == TD_RTL ? SPR_IMG_SKIP_TO_NEXT : SPR_IMG_SKIP_TO_PREV; break;
    00579       case MW_NEXT: this->GetWidget<NWidgetCore>(MW_NEXT)->widget_data = _current_text_dir == TD_RTL ? SPR_IMG_SKIP_TO_PREV : SPR_IMG_SKIP_TO_NEXT; break;
    00580       case MW_PLAY: this->GetWidget<NWidgetCore>(MW_PLAY)->widget_data = _current_text_dir == TD_RTL ? SPR_IMG_PLAY_MUSIC_RTL : SPR_IMG_PLAY_MUSIC; break;
    00581     }
    00582   }
    00583
    00584   virtual void DrawWidget(const Rect &r, int widget) const
    00585   {
    00586     switch (widget) {
    00587       case MW_GAUGE:
    00588         GfxFillRect(r.left, r.top, r.right, r.bottom, 0);
    00589
    00590         for (uint i = 0; i != 8; i++) {
    00591           int colour = 0xD0;
    00592           if (i > 4) {
    00593             colour = 0xBF;
    00594             if (i > 6) {
    00595               colour = 0xB8;
    00596             }
    00597           }
    00598           GfxFillRect(r.left, r.bottom - i * 2, r.right, r.bottom - i * 2, colour);
    00599         }
    00600         break;
    00601
    00602       case MW_TRACK_NR: {
    00603         GfxFillRect(r.left + 1, r.top + 1, r.right, r.bottom, 0);
    00604         StringID str = STR_MUSIC_TRACK_NONE;
    00605         if (_song_is_active != 0 && _music_wnd_cursong != 0) {
    00606           SetDParam(0, GetTrackNumber(_music_wnd_cursong - 1));
    00607           SetDParam(1, 2);
    00608           str = STR_MUSIC_TRACK_DIGIT;
    00609         }
    00610         DrawString(r.left + WD_FRAMERECT_LEFT, r.right - WD_FRAMERECT_RIGHT, r.top + WD_FRAMERECT_TOP, str);
    00611         break;
    00612       }
    00613
    00614       case MW_TRACK_NAME: {
    00615         GfxFillRect(r.left, r.top + 1, r.right - 1, r.bottom, 0);
    00616         StringID str = STR_MUSIC_TITLE_NONE;
    00617         if (_song_is_active != 0 && _music_wnd_cursong != 0) {
    00618           str = STR_MUSIC_TITLE_NAME;
    00619           SetDParamStr(0, GetSongName(_music_wnd_cursong - 1));
    00620         }
    00621         DrawString(r.left + WD_FRAMERECT_LEFT, r.right - WD_FRAMERECT_RIGHT, r.top + WD_FRAMERECT_TOP, str, TC_FROMSTRING, SA_HOR_CENTER);
    00622         break;
    00623       }
    00624
    00625       case MW_MUSIC_VOL: case MW_EFFECT_VOL: {
    00626         DrawFrameRect(r.left, r.top + 2, r.right, r.bottom - 2, COLOUR_GREY, FR_LOWERED);
    00627         byte volume = (widget == MW_MUSIC_VOL) ? _msf.music_vol : _msf.effect_vol;
    00628         int x = (volume * (r.right - r.left) / 127);
    00629         if (_current_text_dir == TD_RTL) {
    00630           x = r.right - x;
    00631         } else {
    00632           x += r.left;
    00633         }
    00634         DrawFrameRect(x, r.top, x + slider_width, r.bottom, COLOUR_GREY, FR_NONE);
    00635         break;
    00636       }
    00637     }
    00638   }
    00639
    00640   virtual void OnInvalidateData(int data = 0)
    00641   {
    00642     for (int i = 0; i < 6; i++) {
    00643       this->SetWidgetLoweredState(MW_ALL + i, i == _msf.playlist);
    00644     }
    00645     this->SetDirty();
    00646   }
    00647
    00648   virtual void OnClick(Point pt, int widget, int click_count)
    00649   {
    00650     switch (widget) {
    00651       case MW_PREV: // skip to prev
    00652         if (!_song_is_active) return;
    00653         SkipToPrevSong();
    00654         this->SetDirty();
    00655         break;
    00656
    00657       case MW_NEXT: // skip to next
    00658         if (!_song_is_active) return;
    00659         SkipToNextSong();
    00660         this->SetDirty();
    00661         break;
    00662
    00663       case MW_STOP: // stop playing
    00664         _msf.playing = false;
    00665         break;
    00666
    00667       case MW_PLAY: // start playing
    00668         _msf.playing = true;
    00669         break;
    00670
    00671       case MW_MUSIC_VOL: case MW_EFFECT_VOL: { // volume sliders
    00672         int x = pt.x - this->GetWidget<NWidgetBase>(widget)->pos_x;
    00673
    00674         byte *vol = (widget == MW_MUSIC_VOL) ? &_msf.music_vol : &_msf.effect_vol;
    00675
    00676         byte new_vol = x * 127 / this->GetWidget<NWidgetBase>(widget)->current_x;
    00677         if (_current_text_dir == TD_RTL) new_vol = 127 - new_vol;
    00678         if (new_vol != *vol) {
    00679           *vol = new_vol;
    00680           if (widget == MW_MUSIC_VOL) MusicVolumeChanged(new_vol);
    00681           this->SetDirty();
    00682         }
    00683
    00684         _left_button_clicked = false;
    00685         break;
    00686       }
    00687
    00688       case MW_SHUFFLE: // toggle shuffle
    00689         _msf.shuffle ^= 1;
    00690         this->SetWidgetLoweredState(MW_SHUFFLE, _msf.shuffle);
    00691         this->SetWidgetDirty(MW_SHUFFLE);
    00692         StopMusic();
    00693         SelectSongToPlay();
    00694         this->SetDirty();
    00695         break;
    00696
    00697       case MW_PROGRAMME: // show track selection
    00698         ShowMusicTrackSelection();
    00699         break;
    00700
    00701       case MW_ALL: case MW_OLD: case MW_NEW:
    00702       case MW_EZY: case MW_CUSTOM1: case MW_CUSTOM2: // playlist
    00703         SelectPlaylist(widget - MW_ALL);
    00704         StopMusic();
    00705         SelectSongToPlay();
    00706         this->SetDirty();
    00707         break;
    00708     }
    00709   }
    00710 };
    00711
    00712 static const NWidgetPart _nested_music_window_widgets[] = {
    00713   NWidget(NWID_HORIZONTAL),
    00714     NWidget(WWT_CLOSEBOX, COLOUR_GREY),
    00715     NWidget(WWT_CAPTION, COLOUR_GREY), SetDataTip(STR_MUSIC_JAZZ_JUKEBOX_CAPTION, STR_TOOLTIP_WINDOW_TITLE_DRAG_THIS),
    00716   EndContainer(),
    00717
    00718   NWidget(NWID_HORIZONTAL),
    00719     NWidget(NWID_VERTICAL),
    00720       NWidget(WWT_PANEL, COLOUR_GREY, -1), SetFill(1, 1), EndContainer(),
    00721       NWidget(NWID_HORIZONTAL),
    00722         NWidget(WWT_PUSHIMGBTN, COLOUR_GREY, MW_PREV), SetMinimalSize(22, 22), SetDataTip(SPR_IMG_SKIP_TO_PREV, STR_MUSIC_TOOLTIP_SKIP_TO_PREVIOUS_TRACK),
    00723         NWidget(WWT_PUSHIMGBTN, COLOUR_GREY, MW_NEXT), SetMinimalSize(22, 22), SetDataTip(SPR_IMG_SKIP_TO_NEXT, STR_MUSIC_TOOLTIP_SKIP_TO_NEXT_TRACK_IN_SELECTION),
    00724         NWidget(WWT_PUSHIMGBTN, COLOUR_GREY, MW_STOP), SetMinimalSize(22, 22), SetDataTip(SPR_IMG_STOP_MUSIC, STR_MUSIC_TOOLTIP_STOP_PLAYING_MUSIC),
    00725         NWidget(WWT_PUSHIMGBTN, COLOUR_GREY, MW_PLAY), SetMinimalSize(22, 22), SetDataTip(SPR_IMG_PLAY_MUSIC, STR_MUSIC_TOOLTIP_START_PLAYING_MUSIC),
    00726       EndContainer(),
    00727       NWidget(WWT_PANEL, COLOUR_GREY, -1), SetFill(1, 1), EndContainer(),
    00728     EndContainer(),
    00729     NWidget(WWT_PANEL, COLOUR_GREY, MW_SLIDERS),
    00730       NWidget(NWID_HORIZONTAL), SetPIP(20, 0, 20),
    00731         NWidget(NWID_VERTICAL),
    00732           NWidget(WWT_LABEL, COLOUR_GREY, -1), SetFill(1, 0), SetDataTip(STR_MUSIC_MUSIC_VOLUME, STR_NULL),
    00733           NWidget(WWT_EMPTY, COLOUR_GREY, MW_MUSIC_VOL), SetMinimalSize(67, 0), SetMinimalTextLines(1, 0), SetFill(1, 0), SetDataTip(0x0, STR_MUSIC_TOOLTIP_DRAG_SLIDERS_TO_SET_MUSIC),
    00734           NWidget(NWID_HORIZONTAL),
    00735             NWidget(WWT_LABEL, COLOUR_GREY, -1), SetDataTip(STR_MUSIC_RULER_MIN, STR_NULL),
    00736             NWidget(WWT_LABEL, COLOUR_GREY, -1), SetDataTip(STR_MUSIC_RULER_MARKER, STR_NULL), SetFill(1, 0),
    00737             NWidget(WWT_LABEL, COLOUR_GREY, -1), SetDataTip(STR_MUSIC_RULER_MARKER, STR_NULL), SetFill(1, 0),
    00738             NWidget(WWT_LABEL, COLOUR_GREY, -1), SetDataTip(STR_MUSIC_RULER_MARKER, STR_NULL), SetFill(1, 0),
    00739             NWidget(WWT_LABEL, COLOUR_GREY, -1), SetDataTip(STR_MUSIC_RULER_MARKER, STR_NULL), SetFill(1, 0),
    00740             NWidget(WWT_LABEL, COLOUR_GREY, -1), SetDataTip(STR_MUSIC_RULER_MARKER, STR_NULL), SetFill(1, 0),
    00741             NWidget(WWT_LABEL, COLOUR_GREY, -1), SetDataTip(STR_MUSIC_RULER_MAX, STR_NULL),
    00742           EndContainer(),
    00743         EndContainer(),
    00744         NWidget(WWT_PANEL, COLOUR_GREY, MW_GAUGE), SetMinimalSize(16, 20), SetPadding(1, 11, 1, 11), SetFill(0, 0), EndContainer(),
    00745         NWidget(NWID_VERTICAL),
    00746           NWidget(WWT_LABEL, COLOUR_GREY, -1), SetFill(1, 0), SetDataTip(STR_MUSIC_EFFECTS_VOLUME, STR_NULL),
    00747           NWidget(WWT_EMPTY, COLOUR_GREY, MW_EFFECT_VOL), SetMinimalSize(67, 0), SetMinimalTextLines(1, 0), SetFill(1, 0), SetDataTip(0x0, STR_MUSIC_TOOLTIP_DRAG_SLIDERS_TO_SET_MUSIC),
    00748           NWidget(NWID_HORIZONTAL),
    00749             NWidget(WWT_LABEL, COLOUR_GREY, -1), SetDataTip(STR_MUSIC_RULER_MIN, STR_NULL),
    00750             NWidget(WWT_LABEL, COLOUR_GREY, -1), SetDataTip(STR_MUSIC_RULER_MARKER, STR_NULL), SetFill(1, 0),
    00751             NWidget(WWT_LABEL, COLOUR_GREY, -1), SetDataTip(STR_MUSIC_RULER_MARKER, STR_NULL), SetFill(1, 0),
    00752             NWidget(WWT_LABEL, COLOUR_GREY, -1), SetDataTip(STR_MUSIC_RULER_MARKER, STR_NULL), SetFill(1, 0),
    00753             NWidget(WWT_LABEL, COLOUR_GREY, -1), SetDataTip(STR_MUSIC_RULER_MARKER, STR_NULL), SetFill(1, 0),
    00754             NWidget(WWT_LABEL, COLOUR_GREY, -1), SetDataTip(STR_MUSIC_RULER_MARKER, STR_NULL), SetFill(1, 0),
    00755             NWidget(WWT_LABEL, COLOUR_GREY, -1), SetDataTip(STR_MUSIC_RULER_MAX, STR_NULL),
    00756           EndContainer(),
    00757         EndContainer(),
    00758       EndContainer(),
    00759     EndContainer(),
    00760   EndContainer(),
    00761   NWidget(WWT_PANEL, COLOUR_GREY, MW_BACKGROUND),
    00762     NWidget(NWID_HORIZONTAL), SetPIP(6, 0, 6),
    00763       NWidget(NWID_VERTICAL),
    00764         NWidget(NWID_SPACER), SetFill(0, 1),
    00765         NWidget(WWT_TEXTBTN, COLOUR_GREY, MW_SHUFFLE), SetMinimalSize(50, 8), SetDataTip(STR_MUSIC_SHUFFLE, STR_MUSIC_TOOLTIP_TOGGLE_PROGRAM_SHUFFLE),
    00766         NWidget(NWID_SPACER), SetFill(0, 1),
    00767       EndContainer(),
    00768       NWidget(NWID_VERTICAL), SetPadding(0, 0, 3, 3),
    00769         NWidget(WWT_LABEL, COLOUR_GREY, MW_TRACK), SetFill(0, 0), SetDataTip(STR_MUSIC_TRACK, STR_NULL),
    00770         NWidget(WWT_PANEL, COLOUR_GREY, MW_TRACK_NR), EndContainer(),
    00771       EndContainer(),
    00772       NWidget(NWID_VERTICAL), SetPadding(0, 3, 3, 0),
    00773         NWidget(WWT_LABEL, COLOUR_GREY, MW_TRACK_TITLE), SetFill(1, 0), SetDataTip(STR_MUSIC_XTITLE, STR_NULL),
    00774         NWidget(WWT_PANEL, COLOUR_GREY, MW_TRACK_NAME), SetFill(1, 0), EndContainer(),
    00775       EndContainer(),
    00776       NWidget(NWID_VERTICAL),
    00777         NWidget(NWID_SPACER), SetFill(0, 1),
    00778         NWidget(WWT_PUSHTXTBTN, COLOUR_GREY, MW_PROGRAMME), SetMinimalSize(50, 8), SetDataTip(STR_MUSIC_PROGRAM, STR_MUSIC_TOOLTIP_SHOW_MUSIC_TRACK_SELECTION),
    00779         NWidget(NWID_SPACER), SetFill(0, 1),
    00780       EndContainer(),
    00781     EndContainer(),
    00782   EndContainer(),
    00783   NWidget(NWID_HORIZONTAL, NC_EQUALSIZE),
    00784     NWidget(WWT_TEXTBTN, COLOUR_GREY, MW_ALL), SetFill(1, 0), SetDataTip(STR_MUSIC_PLAYLIST_ALL, STR_MUSIC_TOOLTIP_SELECT_ALL_TRACKS_PROGRAM),
    00785     NWidget(WWT_TEXTBTN, COLOUR_GREY, MW_OLD), SetFill(1, 0), SetDataTip(STR_MUSIC_PLAYLIST_OLD_STYLE, STR_MUSIC_TOOLTIP_SELECT_OLD_STYLE_MUSIC),
    00786     NWidget(WWT_TEXTBTN, COLOUR_GREY, MW_NEW), SetFill(1, 0), SetDataTip(STR_MUSIC_PLAYLIST_NEW_STYLE, STR_MUSIC_TOOLTIP_SELECT_NEW_STYLE_MUSIC),
    00787     NWidget(WWT_TEXTBTN, COLOUR_GREY, MW_EZY), SetFill(1, 0), SetDataTip(STR_MUSIC_PLAYLIST_EZY_STREET, STR_MUSIC_TOOLTIP_SELECT_EZY_STREET_STYLE),
    00788     NWidget(WWT_TEXTBTN, COLOUR_GREY, MW_CUSTOM1), SetFill(1, 0), SetDataTip(STR_MUSIC_PLAYLIST_CUSTOM_1, STR_MUSIC_TOOLTIP_SELECT_CUSTOM_1_USER_DEFINED),
    00789     NWidget(WWT_TEXTBTN, COLOUR_GREY, MW_CUSTOM2), SetFill(1, 0), SetDataTip(STR_MUSIC_PLAYLIST_CUSTOM_2, STR_MUSIC_TOOLTIP_SELECT_CUSTOM_2_USER_DEFINED),
    00790   EndContainer(),
    00791 };
    00792
    00793 static const WindowDesc _music_window_desc(
    00794   WDP_AUTO, 0, 0,
    00795   WC_MUSIC_WINDOW, WC_NONE,
    00796   WDF_UNCLICK_BUTTONS,
    00797   _nested_music_window_widgets, lengthof(_nested_music_window_widgets)
    00798 );
    00799
    00800 void ShowMusicWindow()
    00801 {
    00802   if (BaseMusic::GetUsedSet()->num_available == 0) ShowErrorMessage(STR_ERROR_NO_SONGS, INVALID_STRING_ID, WL_WARNING);
    00803   AllocateWindowDescFront<MusicWindow>(&_music_window_desc, 0);
    00804 }