src/music_gui.cpp

   1 /* $Id: music_gui.cpp 25776 2013-09-15 15:56:46Z planetmaker $ */
   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 music_gui.cpp GUI for the music playback. */
  11
  12 #include "stdafx.h"
  13 #include "openttd.h"
  14 #include "base_media_base.h"
  15 #include "music/music_driver.hpp"
  16 #include "window_gui.h"
  17 #include "strings_func.h"
  18 #include "window_func.h"
  19 #include "sound_func.h"
  20 #include "gfx_func.h"
  21 #include "core/random_func.hpp"
  22 #include "error.h"
  23 #include "core/geometry_func.hpp"
  24 #include "string_func.h"
  25 #include "settings_type.h"
  26
  27 #include "widgets/music_widget.h"
  28
  29 #include "table/strings.h"
  30 #include "table/sprites.h"
  31
  32 #include "safeguards.h"
  33
  34 /**
  35  * Get the name of the song.
  36  * @param index of the song.
  37  * @return the name of the song.
  38  */
  39 static const char *GetSongName(int index)
  40 {
  41         return BaseMusic::GetUsedSet()->song_name[index];
  42 }
  43
  44 /**
  45  * Get the track number of the song.
  46  * @param index of the song.
  47  * @return the track number of the song.
  48  */
  49 static int GetTrackNumber(int index)
  50 {
  51         return BaseMusic::GetUsedSet()->track_nr[index];
  52 }
  53
  54 /** The currently played song */
  55 static byte _music_wnd_cursong = 1;
  56 /** Whether a song is currently played */
  57 static bool _song_is_active = false;
  58
  59 /** Indices of the songs in the current playlist */
  60 static byte _cur_playlist[NUM_SONGS_PLAYLIST + 1];
  61
  62 /** Indices of all songs */
  63 static byte _playlist_all[NUM_SONGS_AVAILABLE + 1];
  64 /** Indices of all old style songs */
  65 static byte _playlist_old_style[NUM_SONGS_CLASS + 1];
  66 /** Indices of all new style songs */
  67 static byte _playlist_new_style[NUM_SONGS_CLASS + 1];
  68 /** Indices of all ezy street songs */
  69 static byte _playlist_ezy_street[NUM_SONGS_CLASS + 1];
  70
  71 assert_compile(lengthof(_settings_client.music.custom_1) == NUM_SONGS_PLAYLIST + 1);
  72 assert_compile(lengthof(_settings_client.music.custom_2) == NUM_SONGS_PLAYLIST + 1);
  73
  74 /** The different playlists that can be played. */
  75 static byte * const _playlists[] = {
  76         _playlist_all,
  77         _playlist_old_style,
  78         _playlist_new_style,
  79         _playlist_ezy_street,
  80         _settings_client.music.custom_1,
  81         _settings_client.music.custom_2,
  82 };
  83
  84 /**
  85  * Validate a playlist.
  86  * @param playlist The playlist to validate.
  87  * @param last The last location in the list.
  88  */
  89 void ValidatePlaylist(byte *playlist, byte *last)
  90 {
  91         while (*playlist != 0 && playlist <= last) {
  92                 /* Song indices are saved off-by-one so 0 is "nothing". */
  93                 if (*playlist <= NUM_SONGS_AVAILABLE && !StrEmpty(GetSongName(*playlist - 1))) {
  94                         playlist++;
  95                         continue;
  96                 }
  97                 for (byte *p = playlist; *p != 0 && p <= last; p++) {
  98                         p[0] = p[1];
  99                 }
 100         }
 101
 102         /* Make sure the list is null terminated. */
 103         *last = 0;
 104 }
 105
 106 /** Initialize the playlists */
 107 void InitializeMusic()
 108 {
 109         uint j = 0;
 110         for (uint i = 0; i < NUM_SONGS_AVAILABLE; i++) {
 111                 if (StrEmpty(GetSongName(i))) continue;
 112                 _playlist_all[j++] = i + 1;
 113         }
 114         /* Terminate the list */
 115         _playlist_all[j] = 0;
 116
 117         /* Now make the 'styled' playlists */
 118         for (uint k = 0; k < NUM_SONG_CLASSES; k++) {
 119                 j = 0;
 120                 for (uint i = 0; i < NUM_SONGS_CLASS; i++) {
 121                         int id = k * NUM_SONGS_CLASS + i + 1;
 122                         if (StrEmpty(GetSongName(id))) continue;
 123                         _playlists[k + 1][j++] = id + 1;
 124                 }
 125                 /* Terminate the list */
 126                 _playlists[k + 1][j] = 0;
 127         }
 128
 129         ValidatePlaylist(_settings_client.music.custom_1, lastof(_settings_client.music.custom_1));
 130         ValidatePlaylist(_settings_client.music.custom_2, lastof(_settings_client.music.custom_2));
 131
 132         if (BaseMusic::GetUsedSet()->num_available < _music_wnd_cursong) {
 133                 /* If there are less songs than the currently played song,
 134                  * just pause and reset to no song. */
 135                 _music_wnd_cursong = 0;
 136                 _song_is_active = false;
 137         }
 138 }
 139
 140 static void SkipToPrevSong()
 141 {
 142         byte *b = _cur_playlist;
 143         byte *p = b;
 144         byte t;
 145
 146         if (b[0] == 0) return; // empty playlist
 147
 148         do p++; while (p[0] != 0); // find the end
 149
 150         t = *--p; // and copy the bytes
 151         while (p != b) {
 152                 p--;
 153                 p[1] = p[0];
 154         }
 155         *b = t;
 156
 157         _song_is_active = false;
 158 }
 159
 160 static void SkipToNextSong()
 161 {
 162         byte *b = _cur_playlist;
 163         byte t;
 164
 165         t = b[0];
 166         if (t != 0) {
 167                 while (b[1] != 0) {
 168                         b[0] = b[1];
 169                         b++;
 170                 }
 171                 b[0] = t;
 172         }
 173
 174         _song_is_active = false;
 175 }
 176
 177 static void MusicVolumeChanged(byte new_vol)
 178 {
 179         MusicDriver::GetInstance()->SetVolume(new_vol);
 180 }
 181
 182 static void DoPlaySong()
 183 {
 184         char filename[MAX_PATH];
 185         if (FioFindFullPath(filename, lastof(filename), BASESET_DIR, BaseMusic::GetUsedSet()->files[_music_wnd_cursong - 1].filename) == NULL) {
 186                 FioFindFullPath(filename, lastof(filename), OLD_GM_DIR, BaseMusic::GetUsedSet()->files[_music_wnd_cursong - 1].filename);
 187         }
 188         MusicDriver::GetInstance()->PlaySong(filename);
 189         SetWindowDirty(WC_MUSIC_WINDOW, 0);
 190 }
 191
 192 static void DoStopMusic()
 193 {
 194         MusicDriver::GetInstance()->StopSong();
 195         SetWindowDirty(WC_MUSIC_WINDOW, 0);
 196 }
 197
 198 static void SelectSongToPlay()
 199 {
 200         uint i = 0;
 201         uint j = 0;
 202
 203         memset(_cur_playlist, 0, sizeof(_cur_playlist));
 204         do {
 205                 /* File is the index into the file table of the music set. The play list uses 0 as 'no entry',
 206                  * so we need to subtract 1. In case of 'no entry' (file = -1), just skip adding it outright. */
 207                 int file = _playlists[_settings_client.music.playlist][i] - 1;
 208                 if (file >= 0) {
 209                         const char *filename = BaseMusic::GetUsedSet()->files[file].filename;
 210                         /* We are now checking for the existence of that file prior
 211                          * to add it to the list of available songs */
 212                         if (!StrEmpty(filename) && FioCheckFileExists(filename, BASESET_DIR)) {
 213                                 _cur_playlist[j] = _playlists[_settings_client.music.playlist][i];
 214                                 j++;
 215                         }
 216                 }
 217         } while (_playlists[_settings_client.music.playlist][++i] != 0 && j < lengthof(_cur_playlist) - 1);
 218
 219         /* Do not shuffle when on the intro-start window, as the song to play has to be the original TTD Theme*/
 220         if (_settings_client.music.shuffle && _game_mode != GM_MENU) {
 221                 i = 500;
 222                 do {
 223                         uint32 r = InteractiveRandom();
 224                         byte *a = &_cur_playlist[GB(r, 0, 5)];
 225                         byte *b = &_cur_playlist[GB(r, 8, 5)];
 226
 227                         if (*a != 0 && *b != 0) {
 228                                 byte t = *a;
 229                                 *a = *b;
 230                                 *b = t;
 231                         }
 232                 } while (--i);
 233         }
 234 }
 235
 236 static void StopMusic()
 237 {
 238         _music_wnd_cursong = 0;
 239         DoStopMusic();
 240         _song_is_active = false;
 241         SetWindowWidgetDirty(WC_MUSIC_WINDOW, 0, 9);
 242 }
 243
 244 static void PlayPlaylistSong()
 245 {
 246         if (_cur_playlist[0] == 0) {
 247                 SelectSongToPlay();
 248                 /* if there is not songs in the playlist, it may indicate
 249                  * no file on the gm folder, or even no gm folder.
 250                  * Stop the playback, then */
 251                 if (_cur_playlist[0] == 0) {
 252                         _song_is_active = false;
 253                         _music_wnd_cursong = 0;
 254                         _settings_client.music.playing = false;
 255                         return;
 256                 }
 257         }
 258         _music_wnd_cursong = _cur_playlist[0];
 259         DoPlaySong();
 260         _song_is_active = true;
 261
 262         SetWindowWidgetDirty(WC_MUSIC_WINDOW, 0, 9);
 263 }
 264
 265 void ResetMusic()
 266 {
 267         _music_wnd_cursong = 1;
 268         DoPlaySong();
 269 }
 270
 271 void MusicLoop()
 272 {
 273         if (!_settings_client.music.playing && _song_is_active) {
 274                 StopMusic();
 275         } else if (_settings_client.music.playing && !_song_is_active) {
 276                 PlayPlaylistSong();
 277         }
 278
 279         if (!_song_is_active) return;
 280
 281         if (!MusicDriver::GetInstance()->IsSongPlaying()) {
 282                 if (_game_mode != GM_MENU) {
 283                         StopMusic();
 284                         SkipToNextSong();
 285                         PlayPlaylistSong();
 286                 } else {
 287                         ResetMusic();
 288                 }
 289         }
 290 }
 291
 292 static void SelectPlaylist(byte list)
 293 {
 294         _settings_client.music.playlist = list;
 295         InvalidateWindowData(WC_MUSIC_TRACK_SELECTION, 0);
 296         InvalidateWindowData(WC_MUSIC_WINDOW, 0);
 297 }
 298
 299 struct MusicTrackSelectionWindow : public Window {
 300         MusicTrackSelectionWindow(WindowDesc *desc, WindowNumber number) : Window(desc)
 301         {
 302                 this->InitNested(number);
 303                 this->LowerWidget(WID_MTS_LIST_LEFT);
 304                 this->LowerWidget(WID_MTS_LIST_RIGHT);
 305                 this->SetWidgetDisabledState(WID_MTS_CLEAR, _settings_client.music.playlist <= 3);
 306                 this->LowerWidget(WID_MTS_ALL + _settings_client.music.playlist);
 307         }
 308
 309         virtual void SetStringParameters(int widget) const
 310         {
 311                 switch (widget) {
 312                         case WID_MTS_PLAYLIST:
 313                                 SetDParam(0, STR_MUSIC_PLAYLIST_ALL + _settings_client.music.playlist);
 314                                 break;
 315                 }
 316         }
 317
 318         /**
 319          * Some data on this window has become invalid.
 320          * @param data Information about the changed data.
 321          * @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.
 322          */
 323         virtual void OnInvalidateData(int data = 0, bool gui_scope = true)
 324         {
 325                 if (!gui_scope) return;
 326                 for (int i = 0; i < 6; i++) {
 327                         this->SetWidgetLoweredState(WID_MTS_ALL + i, i == _settings_client.music.playlist);
 328                 }
 329                 this->SetWidgetDisabledState(WID_MTS_CLEAR, _settings_client.music.playlist <= 3);
 330                 this->SetDirty();
 331         }
 332
 333         virtual void UpdateWidgetSize(int widget, Dimension *size, const Dimension &padding, Dimension *fill, Dimension *resize)
 334         {
 335                 switch (widget) {
 336                         case WID_MTS_PLAYLIST: {
 337                                 Dimension d = {0, 0};
 338
 339                                 for (int i = 0; i < 6; i++) {
 340                                         SetDParam(0, STR_MUSIC_PLAYLIST_ALL + i);
 341                                         d = maxdim(d, GetStringBoundingBox(STR_PLAYLIST_PROGRAM));
 342                                 }
 343                                 d.width += padding.width;
 344                                 d.height += padding.height;
 345                                 *size = maxdim(*size, d);
 346                                 break;
 347                         }
 348
 349                         case WID_MTS_LIST_LEFT: case WID_MTS_LIST_RIGHT: {
 350                                 Dimension d = {0, 0};
 351
 352                                 for (uint i = 0; i < NUM_SONGS_AVAILABLE; i++) {
 353                                         const char *song_name = GetSongName(i);
 354                                         if (StrEmpty(song_name)) continue;
 355
 356                                         SetDParam(0, GetTrackNumber(i));
 357                                         SetDParam(1, 2);
 358                                         SetDParamStr(2, GetSongName(i));
 359                                         Dimension d2 = GetStringBoundingBox(STR_PLAYLIST_TRACK_NAME);
 360                                         d.width = max(d.width, d2.width);
 361                                         d.height += d2.height;
 362                                 }
 363                                 d.width += padding.width;
 364                                 d.height += padding.height;
 365                                 *size = maxdim(*size, d);
 366                                 break;
 367                         }
 368                 }
 369         }
 370
 371         virtual void DrawWidget(const Rect &r, int widget) const
 372         {
 373                 switch (widget) {
 374                         case WID_MTS_LIST_LEFT: {
 375                                 GfxFillRect(r.left + 1, r.top + 1, r.right - 1, r.bottom - 1, PC_BLACK);
 376
 377                                 int y = r.top + WD_FRAMERECT_TOP;
 378                                 for (uint i = 0; i < NUM_SONGS_AVAILABLE; i++) {
 379                                         const char *song_name = GetSongName(i);
 380                                         if (StrEmpty(song_name)) continue;
 381
 382                                         SetDParam(0, GetTrackNumber(i));
 383                                         SetDParam(1, 2);
 384                                         SetDParamStr(2, song_name);
 385                                         DrawString(r.left + WD_FRAMERECT_LEFT, r.right - WD_FRAMERECT_RIGHT, y, STR_PLAYLIST_TRACK_NAME);
 386                                         y += FONT_HEIGHT_SMALL;
 387                                 }
 388                                 break;
 389                         }
 390
 391                         case WID_MTS_LIST_RIGHT: {
 392                                 GfxFillRect(r.left + 1, r.top + 1, r.right - 1, r.bottom - 1, PC_BLACK);
 393
 394                                 int y = r.top + WD_FRAMERECT_TOP;
 395                                 for (const byte *p = _playlists[_settings_client.music.playlist]; *p != 0; p++) {
 396                                         uint i = *p - 1;
 397                                         SetDParam(0, GetTrackNumber(i));
 398                                         SetDParam(1, 2);
 399                                         SetDParamStr(2, GetSongName(i));
 400                                         DrawString(r.left + WD_FRAMERECT_LEFT, r.right - WD_FRAMERECT_RIGHT, y, STR_PLAYLIST_TRACK_NAME);
 401                                         y += FONT_HEIGHT_SMALL;
 402                                 }
 403                                 break;
 404                         }
 405                 }
 406         }
 407
 408         virtual void OnClick(Point pt, int widget, int click_count)
 409         {
 410                 switch (widget) {
 411                         case WID_MTS_LIST_LEFT: { // add to playlist
 412                                 int y = this->GetRowFromWidget(pt.y, widget, 0, FONT_HEIGHT_SMALL);
 413
 414                                 if (_settings_client.music.playlist < 4) return;
 415                                 if (!IsInsideMM(y, 0, BaseMusic::GetUsedSet()->num_available)) return;
 416
 417                                 byte *p = _playlists[_settings_client.music.playlist];
 418                                 for (uint i = 0; i != NUM_SONGS_PLAYLIST - 1; i++) {
 419                                         if (p[i] == 0) {
 420                                                 /* Find the actual song number */
 421                                                 for (uint j = 0; j < NUM_SONGS_AVAILABLE; j++) {
 422                                                         if (GetTrackNumber(j) == y + 1) {
 423                                                                 p[i] = j + 1;
 424                                                                 break;
 425                                                         }
 426                                                 }
 427                                                 p[i + 1] = 0;
 428                                                 this->SetDirty();
 429                                                 SelectSongToPlay();
 430                                                 break;
 431                                         }
 432                                 }
 433                                 break;
 434                         }
 435
 436                         case WID_MTS_LIST_RIGHT: { // remove from playlist
 437                                 int y = this->GetRowFromWidget(pt.y, widget, 0, FONT_HEIGHT_SMALL);
 438
 439                                 if (_settings_client.music.playlist < 4) return;
 440                                 if (!IsInsideMM(y, 0, NUM_SONGS_PLAYLIST)) return;
 441
 442                                 byte *p = _playlists[_settings_client.music.playlist];
 443                                 for (uint i = y; i != NUM_SONGS_PLAYLIST - 1; i++) {
 444                                         p[i] = p[i + 1];
 445                                 }
 446
 447                                 this->SetDirty();
 448                                 SelectSongToPlay();
 449                                 break;
 450                         }
 451
 452                         case WID_MTS_CLEAR: // clear
 453                                 for (uint i = 0; _playlists[_settings_client.music.playlist][i] != 0; i++) _playlists[_settings_client.music.playlist][i] = 0;
 454                                 this->SetDirty();
 455                                 StopMusic();
 456                                 SelectSongToPlay();
 457                                 break;
 458
 459                         case WID_MTS_ALL: case WID_MTS_OLD: case WID_MTS_NEW:
 460                         case WID_MTS_EZY: case WID_MTS_CUSTOM1: case WID_MTS_CUSTOM2: // set playlist
 461                                 SelectPlaylist(widget - WID_MTS_ALL);
 462                                 StopMusic();
 463                                 SelectSongToPlay();
 464                                 break;
 465                 }
 466         }
 467 };
 468
 469 static const NWidgetPart _nested_music_track_selection_widgets[] = {
 470         NWidget(NWID_HORIZONTAL),
 471                 NWidget(WWT_CLOSEBOX, COLOUR_GREY),
 472                 NWidget(WWT_CAPTION, COLOUR_GREY), SetDataTip(STR_PLAYLIST_MUSIC_PROGRAM_SELECTION, STR_TOOLTIP_WINDOW_TITLE_DRAG_THIS),
 473         EndContainer(),
 474         NWidget(WWT_PANEL, COLOUR_GREY),
 475                 NWidget(NWID_HORIZONTAL), SetPIP(2, 4, 2),
 476                         /* Left panel. */
 477                         NWidget(NWID_VERTICAL),
 478                                 NWidget(WWT_LABEL, COLOUR_GREY), SetDataTip(STR_PLAYLIST_TRACK_INDEX, STR_NULL),
 479                                 NWidget(WWT_PANEL, COLOUR_GREY, WID_MTS_LIST_LEFT), SetMinimalSize(180, 194), SetDataTip(0x0, STR_PLAYLIST_TOOLTIP_CLICK_TO_ADD_TRACK), EndContainer(),
 480                                 NWidget(NWID_SPACER), SetMinimalSize(0, 2),
 481                         EndContainer(),
 482                         /* Middle buttons. */
 483                         NWidget(NWID_VERTICAL),
 484                                 NWidget(NWID_SPACER), SetMinimalSize(60, 30), // Space above the first button from the title bar.
 485                                 NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_MTS_ALL), SetFill(1, 0), SetDataTip(STR_MUSIC_PLAYLIST_ALL, STR_MUSIC_TOOLTIP_SELECT_ALL_TRACKS_PROGRAM),
 486                                 NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_MTS_OLD), SetFill(1, 0), SetDataTip(STR_MUSIC_PLAYLIST_OLD_STYLE, STR_MUSIC_TOOLTIP_SELECT_OLD_STYLE_MUSIC),
 487                                 NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_MTS_NEW), SetFill(1, 0), SetDataTip(STR_MUSIC_PLAYLIST_NEW_STYLE, STR_MUSIC_TOOLTIP_SELECT_NEW_STYLE_MUSIC),
 488                                 NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_MTS_EZY), SetFill(1, 0), SetDataTip(STR_MUSIC_PLAYLIST_EZY_STREET, STR_MUSIC_TOOLTIP_SELECT_EZY_STREET_STYLE),
 489                                 NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_MTS_CUSTOM1), SetFill(1, 0), SetDataTip(STR_MUSIC_PLAYLIST_CUSTOM_1, STR_MUSIC_TOOLTIP_SELECT_CUSTOM_1_USER_DEFINED),
 490                                 NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_MTS_CUSTOM2), SetFill(1, 0), SetDataTip(STR_MUSIC_PLAYLIST_CUSTOM_2, STR_MUSIC_TOOLTIP_SELECT_CUSTOM_2_USER_DEFINED),
 491                                 NWidget(NWID_SPACER), SetMinimalSize(0, 16), // Space above 'clear' button
 492                                 NWidget(WWT_PUSHTXTBTN, COLOUR_GREY, WID_MTS_CLEAR), SetFill(1, 0), SetDataTip(STR_PLAYLIST_CLEAR, STR_PLAYLIST_TOOLTIP_CLEAR_CURRENT_PROGRAM_CUSTOM1),
 493                                 NWidget(NWID_SPACER), SetFill(0, 1),
 494                         EndContainer(),
 495                         /* Right panel. */
 496                         NWidget(NWID_VERTICAL),
 497                                 NWidget(WWT_LABEL, COLOUR_GREY, WID_MTS_PLAYLIST), SetDataTip(STR_PLAYLIST_PROGRAM, STR_NULL),
 498                                 NWidget(WWT_PANEL, COLOUR_GREY, WID_MTS_LIST_RIGHT), SetMinimalSize(180, 194), SetDataTip(0x0, STR_PLAYLIST_TOOLTIP_CLICK_TO_REMOVE_TRACK), EndContainer(),
 499                                 NWidget(NWID_SPACER), SetMinimalSize(0, 2),
 500                         EndContainer(),
 501                 EndContainer(),
 502         EndContainer(),
 503 };
 504
 505 static WindowDesc _music_track_selection_desc(
 506         WDP_AUTO, "music_track", 0, 0,
 507         WC_MUSIC_TRACK_SELECTION, WC_NONE,
 508         0,
 509         _nested_music_track_selection_widgets, lengthof(_nested_music_track_selection_widgets)
 510 );
 511
 512 static void ShowMusicTrackSelection()
 513 {
 514         AllocateWindowDescFront<MusicTrackSelectionWindow>(&_music_track_selection_desc, 0);
 515 }
 516
 517 struct MusicWindow : public Window {
 518         static const int slider_width = 3;
 519
 520         MusicWindow(WindowDesc *desc, WindowNumber number) : Window(desc)
 521         {
 522                 this->InitNested(number);
 523                 this->LowerWidget(_settings_client.music.playlist + WID_M_ALL);
 524                 this->SetWidgetLoweredState(WID_M_SHUFFLE, _settings_client.music.shuffle);
 525         }
 526
 527         virtual void UpdateWidgetSize(int widget, Dimension *size, const Dimension &padding, Dimension *fill, Dimension *resize)
 528         {
 529                 switch (widget) {
 530                         /* Make sure that WID_M_SHUFFLE and WID_M_PROGRAMME have the same size.
 531                          * This can't be done by using NC_EQUALSIZE as the WID_M_INFO is
 532                          * between those widgets and of different size. */
 533                         case WID_M_SHUFFLE: case WID_M_PROGRAMME: {
 534                                 Dimension d = maxdim(GetStringBoundingBox(STR_MUSIC_PROGRAM), GetStringBoundingBox(STR_MUSIC_SHUFFLE));
 535                                 d.width += padding.width;
 536                                 d.height += padding.height;
 537                                 *size = maxdim(*size, d);
 538                                 break;
 539                         }
 540
 541                         case WID_M_TRACK_NR: {
 542                                 Dimension d = GetStringBoundingBox(STR_MUSIC_TRACK_NONE);
 543                                 d.width += WD_FRAMERECT_LEFT + WD_FRAMERECT_RIGHT;
 544                                 d.height += WD_FRAMERECT_TOP + WD_FRAMERECT_BOTTOM;
 545                                 *size = maxdim(*size, d);
 546                                 break;
 547                         }
 548
 549                         case WID_M_TRACK_NAME: {
 550                                 Dimension d = GetStringBoundingBox(STR_MUSIC_TITLE_NONE);
 551                                 for (uint i = 0; i < NUM_SONGS_AVAILABLE; i++) {
 552                                         SetDParamStr(0, GetSongName(i));
 553                                         d = maxdim(d, GetStringBoundingBox(STR_MUSIC_TITLE_NAME));
 554                                 }
 555                                 d.width += WD_FRAMERECT_LEFT + WD_FRAMERECT_RIGHT;
 556                                 d.height += WD_FRAMERECT_TOP + WD_FRAMERECT_BOTTOM;
 557                                 *size = maxdim(*size, d);
 558                                 break;
 559                         }
 560
 561                         /* Hack-ish: set the proper widget data; only needs to be done once
 562                          * per (Re)Init as that's the only time the language changes. */
 563                         case WID_M_PREV: this->GetWidget<NWidgetCore>(WID_M_PREV)->widget_data = _current_text_dir == TD_RTL ? SPR_IMG_SKIP_TO_NEXT : SPR_IMG_SKIP_TO_PREV; break;
 564                         case WID_M_NEXT: this->GetWidget<NWidgetCore>(WID_M_NEXT)->widget_data = _current_text_dir == TD_RTL ? SPR_IMG_SKIP_TO_PREV : SPR_IMG_SKIP_TO_NEXT; break;
 565                         case WID_M_PLAY: this->GetWidget<NWidgetCore>(WID_M_PLAY)->widget_data = _current_text_dir == TD_RTL ? SPR_IMG_PLAY_MUSIC_RTL : SPR_IMG_PLAY_MUSIC; break;
 566                 }
 567         }
 568
 569         virtual void DrawWidget(const Rect &r, int widget) const
 570         {
 571                 switch (widget) {
 572                         case WID_M_TRACK_NR: {
 573                                 GfxFillRect(r.left + 1, r.top + 1, r.right, r.bottom, PC_BLACK);
 574                                 StringID str = STR_MUSIC_TRACK_NONE;
 575                                 if (_song_is_active != 0 && _music_wnd_cursong != 0) {
 576                                         SetDParam(0, GetTrackNumber(_music_wnd_cursong - 1));
 577                                         SetDParam(1, 2);
 578                                         str = STR_MUSIC_TRACK_DIGIT;
 579                                 }
 580                                 DrawString(r.left + WD_FRAMERECT_LEFT, r.right - WD_FRAMERECT_RIGHT, r.top + WD_FRAMERECT_TOP, str);
 581                                 break;
 582                         }
 583
 584                         case WID_M_TRACK_NAME: {
 585                                 GfxFillRect(r.left, r.top + 1, r.right - 1, r.bottom, PC_BLACK);
 586                                 StringID str = STR_MUSIC_TITLE_NONE;
 587                                 if (_song_is_active != 0 && _music_wnd_cursong != 0) {
 588                                         str = STR_MUSIC_TITLE_NAME;
 589                                         SetDParamStr(0, GetSongName(_music_wnd_cursong - 1));
 590                                 }
 591                                 DrawString(r.left + WD_FRAMERECT_LEFT, r.right - WD_FRAMERECT_RIGHT, r.top + WD_FRAMERECT_TOP, str, TC_FROMSTRING, SA_HOR_CENTER);
 592                                 break;
 593                         }
 594
 595                         case WID_M_MUSIC_VOL: case WID_M_EFFECT_VOL: {
 596                                 DrawFrameRect(r.left, r.top + 2, r.right, r.bottom - 2, COLOUR_GREY, FR_LOWERED);
 597                                 byte volume = (widget == WID_M_MUSIC_VOL) ? _settings_client.music.music_vol : _settings_client.music.effect_vol;
 598                                 int x = (volume * (r.right - r.left) / 127);
 599                                 if (_current_text_dir == TD_RTL) {
 600                                         x = r.right - x;
 601                                 } else {
 602                                         x += r.left;
 603                                 }
 604                                 DrawFrameRect(x, r.top, x + slider_width, r.bottom, COLOUR_GREY, FR_NONE);
 605                                 break;
 606                         }
 607                 }
 608         }
 609
 610         /**
 611          * Some data on this window has become invalid.
 612          * @param data Information about the changed data.
 613          * @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.
 614          */
 615         virtual void OnInvalidateData(int data = 0, bool gui_scope = true)
 616         {
 617                 if (!gui_scope) return;
 618                 for (int i = 0; i < 6; i++) {
 619                         this->SetWidgetLoweredState(WID_M_ALL + i, i == _settings_client.music.playlist);
 620                 }
 621                 this->SetDirty();
 622         }
 623
 624         virtual void OnClick(Point pt, int widget, int click_count)
 625         {
 626                 switch (widget) {
 627                         case WID_M_PREV: // skip to prev
 628                                 if (!_song_is_active) return;
 629                                 SkipToPrevSong();
 630                                 this->SetDirty();
 631                                 break;
 632
 633                         case WID_M_NEXT: // skip to next
 634                                 if (!_song_is_active) return;
 635                                 SkipToNextSong();
 636                                 this->SetDirty();
 637                                 break;
 638
 639                         case WID_M_STOP: // stop playing
 640                                 _settings_client.music.playing = false;
 641                                 break;
 642
 643                         case WID_M_PLAY: // start playing
 644                                 _settings_client.music.playing = true;
 645                                 break;
 646
 647                         case WID_M_MUSIC_VOL: case WID_M_EFFECT_VOL: { // volume sliders
 648                                 int x = pt.x - this->GetWidget<NWidgetBase>(widget)->pos_x;
 649
 650                                 byte *vol = (widget == WID_M_MUSIC_VOL) ? &_settings_client.music.music_vol : &_settings_client.music.effect_vol;
 651
 652                                 byte new_vol = x * 127 / this->GetWidget<NWidgetBase>(widget)->current_x;
 653                                 if (_current_text_dir == TD_RTL) new_vol = 127 - new_vol;
 654                                 if (new_vol != *vol) {
 655                                         *vol = new_vol;
 656                                         if (widget == WID_M_MUSIC_VOL) MusicVolumeChanged(new_vol);
 657                                         this->SetDirty();
 658                                 }
 659
 660                                 _left_button_clicked = false;
 661                                 break;
 662                         }
 663
 664                         case WID_M_SHUFFLE: // toggle shuffle
 665                                 _settings_client.music.shuffle ^= 1;
 666                                 this->SetWidgetLoweredState(WID_M_SHUFFLE, _settings_client.music.shuffle);
 667                                 this->SetWidgetDirty(WID_M_SHUFFLE);
 668                                 StopMusic();
 669                                 SelectSongToPlay();
 670                                 this->SetDirty();
 671                                 break;
 672
 673                         case WID_M_PROGRAMME: // show track selection
 674                                 ShowMusicTrackSelection();
 675                                 break;
 676
 677                         case WID_M_ALL: case WID_M_OLD: case WID_M_NEW:
 678                         case WID_M_EZY: case WID_M_CUSTOM1: case WID_M_CUSTOM2: // playlist
 679                                 SelectPlaylist(widget - WID_M_ALL);
 680                                 StopMusic();
 681                                 SelectSongToPlay();
 682                                 this->SetDirty();
 683                                 break;
 684                 }
 685         }
 686 };
 687
 688 static const NWidgetPart _nested_music_window_widgets[] = {
 689         NWidget(NWID_HORIZONTAL),
 690                 NWidget(WWT_CLOSEBOX, COLOUR_GREY),
 691                 NWidget(WWT_CAPTION, COLOUR_GREY), SetDataTip(STR_MUSIC_JAZZ_JUKEBOX_CAPTION, STR_TOOLTIP_WINDOW_TITLE_DRAG_THIS),
 692                 NWidget(WWT_SHADEBOX, COLOUR_GREY),
 693                 NWidget(WWT_STICKYBOX, COLOUR_GREY),
 694         EndContainer(),
 695
 696         NWidget(NWID_HORIZONTAL),
 697                 NWidget(NWID_VERTICAL),
 698                         NWidget(WWT_PANEL, COLOUR_GREY, -1), SetFill(1, 1), EndContainer(),
 699                         NWidget(NWID_HORIZONTAL),
 700                                 NWidget(WWT_PUSHIMGBTN, COLOUR_GREY, WID_M_PREV), SetMinimalSize(22, 22), SetDataTip(SPR_IMG_SKIP_TO_PREV, STR_MUSIC_TOOLTIP_SKIP_TO_PREVIOUS_TRACK),
 701                                 NWidget(WWT_PUSHIMGBTN, COLOUR_GREY, WID_M_NEXT), SetMinimalSize(22, 22), SetDataTip(SPR_IMG_SKIP_TO_NEXT, STR_MUSIC_TOOLTIP_SKIP_TO_NEXT_TRACK_IN_SELECTION),
 702                                 NWidget(WWT_PUSHIMGBTN, COLOUR_GREY, WID_M_STOP), SetMinimalSize(22, 22), SetDataTip(SPR_IMG_STOP_MUSIC, STR_MUSIC_TOOLTIP_STOP_PLAYING_MUSIC),
 703                                 NWidget(WWT_PUSHIMGBTN, COLOUR_GREY, WID_M_PLAY), SetMinimalSize(22, 22), SetDataTip(SPR_IMG_PLAY_MUSIC, STR_MUSIC_TOOLTIP_START_PLAYING_MUSIC),
 704                         EndContainer(),
 705                         NWidget(WWT_PANEL, COLOUR_GREY, -1), SetFill(1, 1), EndContainer(),
 706                 EndContainer(),
 707                 NWidget(WWT_PANEL, COLOUR_GREY, WID_M_SLIDERS),
 708                         NWidget(NWID_HORIZONTAL), SetPIP(20, 20, 20),
 709                                 NWidget(NWID_VERTICAL),
 710                                         NWidget(WWT_LABEL, COLOUR_GREY, -1), SetFill(1, 0), SetDataTip(STR_MUSIC_MUSIC_VOLUME, STR_NULL),
 711                                         NWidget(WWT_EMPTY, COLOUR_GREY, WID_M_MUSIC_VOL), SetMinimalSize(67, 0), SetMinimalTextLines(1, 0), SetFill(1, 0), SetDataTip(0x0, STR_MUSIC_TOOLTIP_DRAG_SLIDERS_TO_SET_MUSIC),
 712                                         NWidget(NWID_HORIZONTAL),
 713                                                 NWidget(WWT_LABEL, COLOUR_GREY, -1), SetDataTip(STR_MUSIC_RULER_MIN, STR_NULL),
 714                                                 NWidget(WWT_LABEL, COLOUR_GREY, -1), SetDataTip(STR_MUSIC_RULER_MARKER, STR_NULL), SetFill(1, 0),
 715                                                 NWidget(WWT_LABEL, COLOUR_GREY, -1), SetDataTip(STR_MUSIC_RULER_MARKER, STR_NULL), SetFill(1, 0),
 716                                                 NWidget(WWT_LABEL, COLOUR_GREY, -1), SetDataTip(STR_MUSIC_RULER_MARKER, STR_NULL), SetFill(1, 0),
 717                                                 NWidget(WWT_LABEL, COLOUR_GREY, -1), SetDataTip(STR_MUSIC_RULER_MARKER, STR_NULL), SetFill(1, 0),
 718                                                 NWidget(WWT_LABEL, COLOUR_GREY, -1), SetDataTip(STR_MUSIC_RULER_MARKER, STR_NULL), SetFill(1, 0),
 719                                                 NWidget(WWT_LABEL, COLOUR_GREY, -1), SetDataTip(STR_MUSIC_RULER_MAX, STR_NULL),
 720                                         EndContainer(),
 721                                 EndContainer(),
 722                                 NWidget(NWID_VERTICAL),
 723                                         NWidget(WWT_LABEL, COLOUR_GREY, -1), SetFill(1, 0), SetDataTip(STR_MUSIC_EFFECTS_VOLUME, STR_NULL),
 724                                         NWidget(WWT_EMPTY, COLOUR_GREY, WID_M_EFFECT_VOL), SetMinimalSize(67, 0), SetMinimalTextLines(1, 0), SetFill(1, 0), SetDataTip(0x0, STR_MUSIC_TOOLTIP_DRAG_SLIDERS_TO_SET_MUSIC),
 725                                         NWidget(NWID_HORIZONTAL),
 726                                                 NWidget(WWT_LABEL, COLOUR_GREY, -1), SetDataTip(STR_MUSIC_RULER_MIN, STR_NULL),
 727                                                 NWidget(WWT_LABEL, COLOUR_GREY, -1), SetDataTip(STR_MUSIC_RULER_MARKER, STR_NULL), SetFill(1, 0),
 728                                                 NWidget(WWT_LABEL, COLOUR_GREY, -1), SetDataTip(STR_MUSIC_RULER_MARKER, STR_NULL), SetFill(1, 0),
 729                                                 NWidget(WWT_LABEL, COLOUR_GREY, -1), SetDataTip(STR_MUSIC_RULER_MARKER, STR_NULL), SetFill(1, 0),
 730                                                 NWidget(WWT_LABEL, COLOUR_GREY, -1), SetDataTip(STR_MUSIC_RULER_MARKER, STR_NULL), SetFill(1, 0),
 731                                                 NWidget(WWT_LABEL, COLOUR_GREY, -1), SetDataTip(STR_MUSIC_RULER_MARKER, STR_NULL), SetFill(1, 0),
 732                                                 NWidget(WWT_LABEL, COLOUR_GREY, -1), SetDataTip(STR_MUSIC_RULER_MAX, STR_NULL),
 733                                         EndContainer(),
 734                                 EndContainer(),
 735                         EndContainer(),
 736                 EndContainer(),
 737         EndContainer(),
 738         NWidget(WWT_PANEL, COLOUR_GREY, WID_M_BACKGROUND),
 739                 NWidget(NWID_HORIZONTAL), SetPIP(6, 0, 6),
 740                         NWidget(NWID_VERTICAL),
 741                                 NWidget(NWID_SPACER), SetFill(0, 1),
 742                                 NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_M_SHUFFLE), SetMinimalSize(50, 8), SetDataTip(STR_MUSIC_SHUFFLE, STR_MUSIC_TOOLTIP_TOGGLE_PROGRAM_SHUFFLE),
 743                                 NWidget(NWID_SPACER), SetFill(0, 1),
 744                         EndContainer(),
 745                         NWidget(NWID_VERTICAL), SetPadding(0, 0, 3, 3),
 746                                 NWidget(WWT_LABEL, COLOUR_GREY, WID_M_TRACK), SetFill(0, 0), SetDataTip(STR_MUSIC_TRACK, STR_NULL),
 747                                 NWidget(WWT_PANEL, COLOUR_GREY, WID_M_TRACK_NR), EndContainer(),
 748                         EndContainer(),
 749                         NWidget(NWID_VERTICAL), SetPadding(0, 3, 3, 0),
 750                                 NWidget(WWT_LABEL, COLOUR_GREY, WID_M_TRACK_TITLE), SetFill(1, 0), SetDataTip(STR_MUSIC_XTITLE, STR_NULL),
 751                                 NWidget(WWT_PANEL, COLOUR_GREY, WID_M_TRACK_NAME), SetFill(1, 0), EndContainer(),
 752                         EndContainer(),
 753                         NWidget(NWID_VERTICAL),
 754                                 NWidget(NWID_SPACER), SetFill(0, 1),
 755                                 NWidget(WWT_PUSHTXTBTN, COLOUR_GREY, WID_M_PROGRAMME), SetMinimalSize(50, 8), SetDataTip(STR_MUSIC_PROGRAM, STR_MUSIC_TOOLTIP_SHOW_MUSIC_TRACK_SELECTION),
 756                                 NWidget(NWID_SPACER), SetFill(0, 1),
 757                         EndContainer(),
 758                 EndContainer(),
 759         EndContainer(),
 760         NWidget(NWID_HORIZONTAL, NC_EQUALSIZE),
 761                 NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_M_ALL), SetFill(1, 0), SetDataTip(STR_MUSIC_PLAYLIST_ALL, STR_MUSIC_TOOLTIP_SELECT_ALL_TRACKS_PROGRAM),
 762                 NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_M_OLD), SetFill(1, 0), SetDataTip(STR_MUSIC_PLAYLIST_OLD_STYLE, STR_MUSIC_TOOLTIP_SELECT_OLD_STYLE_MUSIC),
 763                 NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_M_NEW), SetFill(1, 0), SetDataTip(STR_MUSIC_PLAYLIST_NEW_STYLE, STR_MUSIC_TOOLTIP_SELECT_NEW_STYLE_MUSIC),
 764                 NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_M_EZY), SetFill(1, 0), SetDataTip(STR_MUSIC_PLAYLIST_EZY_STREET, STR_MUSIC_TOOLTIP_SELECT_EZY_STREET_STYLE),
 765                 NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_M_CUSTOM1), SetFill(1, 0), SetDataTip(STR_MUSIC_PLAYLIST_CUSTOM_1, STR_MUSIC_TOOLTIP_SELECT_CUSTOM_1_USER_DEFINED),
 766                 NWidget(WWT_TEXTBTN, COLOUR_GREY, WID_M_CUSTOM2), SetFill(1, 0), SetDataTip(STR_MUSIC_PLAYLIST_CUSTOM_2, STR_MUSIC_TOOLTIP_SELECT_CUSTOM_2_USER_DEFINED),
 767         EndContainer(),
 768 };
 769
 770 static WindowDesc _music_window_desc(
 771         WDP_AUTO, "music", 0, 0,
 772         WC_MUSIC_WINDOW, WC_NONE,
 773         0,
 774         _nested_music_window_widgets, lengthof(_nested_music_window_widgets)
 775 );
 776
 777 void ShowMusicWindow()
 778 {
 779         if (BaseMusic::GetUsedSet()->num_available == 0) ShowErrorMessage(STR_ERROR_NO_SONGS, INVALID_STRING_ID, WL_WARNING);
 780         AllocateWindowDescFront<MusicWindow>(&_music_window_desc, 0);
 781 }