src/screen_play.c

   1 /* ncmpc (Ncurses MPD Client)
   2  * (c) 2004-2009 The Music Player Daemon Project
   3  * Project homepage: http://musicpd.org
   4
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18 */
  19
  20 #include "config.h"
  21 #include "i18n.h"
  22 #include "charset.h"
  23 #include "options.h"
  24 #include "mpdclient.h"
  25 #include "utils.h"
  26 #include "strfsong.h"
  27 #include "wreadln.h"
  28 #include "command.h"
  29 #include "colors.h"
  30 #include "screen.h"
  31 #include "screen_utils.h"
  32 #include "screen_play.h"
  33
  34 #ifndef NCMPC_MINI
  35 #include "hscroll.h"
  36 #endif
  37
  38 #include <ctype.h>
  39 #include <stdlib.h>
  40 #include <string.h>
  41 #include <time.h>
  42 #include <glib.h>
  43
  44 #define MAX_SONG_LENGTH 512
  45
  46 #ifndef NCMPC_MINI
  47 typedef struct
  48 {
  49         GList **list;
  50         GList **dir_list;
  51         mpdclient_t *c;
  52 } completion_callback_data_t;
  53 #endif
  54
  55 static struct mpdclient_playlist *playlist;
  56 static int current_song_id = -1;
  57 static list_window_t *lw = NULL;
  58 static guint timer_hide_cursor_id;
  59
  60 static void
  61 play_paint(void);
  62
  63 static void
  64 playlist_repaint(void)
  65 {
  66         play_paint();
  67         wrefresh(lw->w);
  68 }
  69
  70 static void
  71 playlist_repaint_if_active(void)
  72 {
  73         if (screen_is_visible(&screen_playlist))
  74                 playlist_repaint();
  75 }
  76
  77 static void
  78 playlist_changed_callback(mpdclient_t *c, int event, gpointer data)
  79 {
  80         switch (event) {
  81         case PLAYLIST_EVENT_DELETE:
  82                 break;
  83         case PLAYLIST_EVENT_MOVE:
  84                 if(lw->visual_selection < 0)
  85                 {
  86                         lw->selected = *((int *) data);
  87                         if (lw->selected < lw->start)
  88                                 lw->start--;
  89                 }
  90                 break;
  91         default:
  92                 break;
  93         }
  94
  95         list_window_check_selected(lw, c->playlist.list->len);
  96         playlist_repaint_if_active();
  97 }
  98
  99 static const char *
 100 list_callback(unsigned idx, bool *highlight, G_GNUC_UNUSED void *data)
 101 {
 102         static char songname[MAX_SONG_LENGTH];
 103 #ifndef NCMPC_MINI
 104         static scroll_state_t st;
 105 #endif
 106         mpd_Song *song;
 107
 108         if (playlist == NULL || idx >= playlist_length(playlist))
 109                 return NULL;
 110
 111         song = playlist_get(playlist, idx);
 112         if (song->id == current_song_id)
 113                 *highlight = true;
 114
 115         strfsong(songname, MAX_SONG_LENGTH, options.list_format, song);
 116
 117 #ifndef NCMPC_MINI
 118         if (options.scroll && (unsigned)song->pos == lw->selected &&
 119             utf8_width(songname) > (unsigned)COLS) {
 120                 static unsigned current_song;
 121                 char *tmp;
 122
 123                 if (current_song != lw->selected) {
 124                         st.offset = 0;
 125                         current_song = lw->selected;
 126                 }
 127
 128                 tmp = strscroll(songname, options.scroll_sep,
 129                                 MAX_SONG_LENGTH, &st);
 130                 g_strlcpy(songname, tmp, MAX_SONG_LENGTH);
 131                 g_free(tmp);
 132         } else if ((unsigned)song->pos == lw->selected)
 133                 st.offset = 0;
 134 #endif
 135
 136         return songname;
 137 }
 138
 139 static void
 140 center_playing_item(mpdclient_t *c)
 141 {
 142         unsigned length = c->playlist.list->len;
 143         unsigned offset = lw->selected - lw->start;
 144         int idx;
 145
 146         if (!c->song || length < lw->rows ||
 147             c->status == NULL || IS_STOPPED(c->status->state))
 148                 return;
 149
 150         /* try to center the song that are playing */
 151         idx = playlist_get_index(c, c->song);
 152         if (idx < 0)
 153                 return;
 154
 155         list_window_center(lw, length, idx);
 156
 157         /* make sure the cursor is in the window */
 158         lw->selected = lw->start+offset;
 159         lw->selected_start = lw->selected;
 160         lw->selected_end = lw->selected;
 161         list_window_check_selected(lw, length);
 162 }
 163
 164 #ifndef NCMPC_MINI
 165 static void
 166 save_pre_completion_cb(GCompletion *gcmp, G_GNUC_UNUSED gchar *line,
 167                        void *data)
 168 {
 169         completion_callback_data_t *tmp = (completion_callback_data_t *)data;
 170         GList **list = tmp->list;
 171         mpdclient_t *c = tmp->c;
 172
 173         if( *list == NULL ) {
 174                 /* create completion list */
 175                 *list = gcmp_list_from_path(c, "", NULL, GCMP_TYPE_PLAYLIST);
 176                 g_completion_add_items(gcmp, *list);
 177         }
 178 }
 179
 180 static void
 181 save_post_completion_cb(G_GNUC_UNUSED GCompletion *gcmp,
 182                         G_GNUC_UNUSED gchar *line, GList *items,
 183                         G_GNUC_UNUSED void *data)
 184 {
 185         if (g_list_length(items) >= 1)
 186                 screen_display_completion_list(items);
 187 }
 188 #endif
 189
 190 #ifndef NCMPC_MINI
 191 /**
 192  * Wrapper for strncmp().  We are not allowed to pass &strncmp to
 193  * g_completion_set_compare(), because strncmp() takes size_t where
 194  * g_completion_set_compare passes a gsize value.
 195  */
 196 static gint
 197 completion_strncmp(const gchar *s1, const gchar *s2, gsize n)
 198 {
 199         return strncmp(s1, s2, n);
 200 }
 201 #endif
 202
 203 int
 204 playlist_save(mpdclient_t *c, char *name, char *defaultname)
 205 {
 206         gchar *filename, *filename_utf8;
 207         gint error;
 208 #ifndef NCMPC_MINI
 209         GCompletion *gcmp;
 210         GList *list = NULL;
 211         completion_callback_data_t data;
 212 #endif
 213
 214 #ifdef NCMPC_MINI
 215         (void)defaultname;
 216 #endif
 217
 218 #ifndef NCMPC_MINI
 219         if (name == NULL) {
 220                 /* initialize completion support */
 221                 gcmp = g_completion_new(NULL);
 222                 g_completion_set_compare(gcmp, completion_strncmp);
 223                 data.list = &list;
 224                 data.dir_list = NULL;
 225                 data.c = c;
 226                 wrln_completion_callback_data = &data;
 227                 wrln_pre_completion_callback = save_pre_completion_cb;
 228                 wrln_post_completion_callback = save_post_completion_cb;
 229
 230
 231                 /* query the user for a filename */
 232                 filename = screen_readln(screen.status_window.w,
 233                                          _("Save playlist as: "),
 234                                          defaultname,
 235                                          NULL,
 236                                          gcmp);
 237
 238                 /* destroy completion support */
 239                 wrln_completion_callback_data = NULL;
 240                 wrln_pre_completion_callback = NULL;
 241                 wrln_post_completion_callback = NULL;
 242                 g_completion_free(gcmp);
 243                 list = string_list_free(list);
 244                 if( filename )
 245                         filename=g_strstrip(filename);
 246         } else
 247 #endif
 248                         filename=g_strdup(name);
 249
 250         if (filename == NULL)
 251                 return -1;
 252
 253         /* send save command to mpd */
 254
 255         filename_utf8 = locale_to_utf8(filename);
 256         error = mpdclient_cmd_save_playlist(c, filename_utf8);
 257         g_free(filename_utf8);
 258
 259         if (error) {
 260                 gint code = GET_ACK_ERROR_CODE(error);
 261
 262                 if (code == MPD_ACK_ERROR_EXIST) {
 263                         char *buf;
 264                         int key;
 265
 266                         buf = g_strdup_printf(_("Replace %s [%s/%s] ? "),
 267                                               filename, YES, NO);
 268                         key = tolower(screen_getch(screen.status_window.w,
 269                                                    buf));
 270                         g_free(buf);
 271
 272                         if (key == YES[0]) {
 273                                 filename_utf8 = locale_to_utf8(filename);
 274                                 error = mpdclient_cmd_delete_playlist(c, filename_utf8);
 275                                 g_free(filename_utf8);
 276
 277                                 if (error) {
 278                                         g_free(filename);
 279                                         return -1;
 280                                 }
 281
 282                                 error = playlist_save(c, filename, NULL);
 283                                 g_free(filename);
 284                                 return error;
 285                         }
 286
 287                         screen_status_printf(_("Aborted"));
 288                 }
 289
 290                 g_free(filename);
 291                 return -1;
 292         }
 293
 294         /* success */
 295         screen_status_printf(_("Saved %s"), filename);
 296         g_free(filename);
 297         return 0;
 298 }
 299
 300 #ifndef NCMPC_MINI
 301 static void add_dir(GCompletion *gcmp, gchar *dir, GList **dir_list,
 302                     GList **list, mpdclient_t *c)
 303 {
 304         g_completion_remove_items(gcmp, *list);
 305         *list = string_list_remove(*list, dir);
 306         *list = gcmp_list_from_path(c, dir, *list, GCMP_TYPE_RFILE);
 307         g_completion_add_items(gcmp, *list);
 308         *dir_list = g_list_append(*dir_list, g_strdup(dir));
 309 }
 310
 311 static void add_pre_completion_cb(GCompletion *gcmp, gchar *line, void *data)
 312 {
 313         completion_callback_data_t *tmp = (completion_callback_data_t *)data;
 314         GList **dir_list = tmp->dir_list;
 315         GList **list = tmp->list;
 316         mpdclient_t *c = tmp->c;
 317
 318         if (*list == NULL) {
 319                 /* create initial list */
 320                 *list = gcmp_list_from_path(c, "", NULL, GCMP_TYPE_RFILE);
 321                 g_completion_add_items(gcmp, *list);
 322         } else if (line && line[0] && line[strlen(line)-1]=='/' &&
 323                    string_list_find(*dir_list, line) == NULL) {
 324                 /* add directory content to list */
 325                 add_dir(gcmp, line, dir_list, list, c);
 326         }
 327 }
 328
 329 static void add_post_completion_cb(GCompletion *gcmp, gchar *line,
 330                                    GList *items, void *data)
 331 {
 332         completion_callback_data_t *tmp = (completion_callback_data_t *)data;
 333         GList **dir_list = tmp->dir_list;
 334         GList **list = tmp->list;
 335         mpdclient_t *c = tmp->c;
 336
 337         if (g_list_length(items) >= 1)
 338                 screen_display_completion_list(items);
 339
 340         if (line && line[0] && line[strlen(line) - 1] == '/' &&
 341             string_list_find(*dir_list, line) == NULL) {
 342                 /* add directory content to list */
 343                 add_dir(gcmp, line, dir_list, list, c);
 344         }
 345 }
 346 #endif
 347
 348 static int
 349 handle_add_to_playlist(mpdclient_t *c)
 350 {
 351         gchar *path;
 352 #ifndef NCMPC_MINI
 353         GCompletion *gcmp;
 354         GList *list = NULL;
 355         GList *dir_list = NULL;
 356         completion_callback_data_t data;
 357
 358         /* initialize completion support */
 359         gcmp = g_completion_new(NULL);
 360         g_completion_set_compare(gcmp, completion_strncmp);
 361         data.list = &list;
 362         data.dir_list = &dir_list;
 363         data.c = c;
 364         wrln_completion_callback_data = &data;
 365         wrln_pre_completion_callback = add_pre_completion_cb;
 366         wrln_post_completion_callback = add_post_completion_cb;
 367 #endif
 368
 369         /* get path */
 370         path = screen_readln(screen.status_window.w,
 371                              _("Add: "),
 372                              NULL,
 373                              NULL,
 374 #ifdef NCMPC_MINI
 375                              NULL
 376 #else
 377                              gcmp
 378 #endif
 379                              );
 380
 381         /* destroy completion data */
 382 #ifndef NCMPC_MINI
 383         wrln_completion_callback_data = NULL;
 384         wrln_pre_completion_callback = NULL;
 385         wrln_post_completion_callback = NULL;
 386         g_completion_free(gcmp);
 387         string_list_free(list);
 388         string_list_free(dir_list);
 389 #endif
 390
 391         /* add the path to the playlist */
 392         if (path != NULL) {
 393                 char *path_utf8 = locale_to_utf8(path);
 394                 mpdclient_cmd_add_path(c, path_utf8);
 395                 g_free(path_utf8);
 396         }
 397
 398         g_free(path);
 399         return 0;
 400 }
 401
 402 static void
 403 play_init(WINDOW *w, int cols, int rows)
 404 {
 405         lw = list_window_init(w, cols, rows);
 406 }
 407
 408 static gboolean
 409 timer_hide_cursor(gpointer data)
 410 {
 411         struct mpdclient *c = data;
 412
 413         assert(options.hide_cursor > 0);
 414         assert(timer_hide_cursor_id != 0);
 415
 416         timer_hide_cursor_id = 0;
 417
 418         /* hide the cursor when mpd is playing and the user is inactive */
 419
 420         if (c->status != NULL && c->status->state == MPD_STATUS_STATE_PLAY) {
 421                 lw->hide_cursor = true;
 422                 playlist_repaint();
 423         } else
 424                 timer_hide_cursor_id = g_timeout_add(options.hide_cursor * 1000,
 425                                                      timer_hide_cursor, c);
 426
 427         return FALSE;
 428 }
 429
 430 static void
 431 play_open(mpdclient_t *c)
 432 {
 433         static gboolean install_cb = TRUE;
 434
 435         playlist = &c->playlist;
 436
 437         assert(timer_hide_cursor_id == 0);
 438         if (options.hide_cursor > 0) {
 439                 lw->hide_cursor = false;
 440                 timer_hide_cursor_id = g_timeout_add(options.hide_cursor * 1000,
 441                                                      timer_hide_cursor, c);
 442         }
 443
 444         if (install_cb) {
 445                 mpdclient_install_playlist_callback(c, playlist_changed_callback);
 446                 install_cb = FALSE;
 447         }
 448 }
 449
 450 static void
 451 play_close(void)
 452 {
 453         if (timer_hide_cursor_id != 0) {
 454                 g_source_remove(timer_hide_cursor_id);
 455                 timer_hide_cursor_id = 0;
 456         }
 457 }
 458
 459 static void
 460 play_resize(int cols, int rows)
 461 {
 462         lw->cols = cols;
 463         lw->rows = rows;
 464 }
 465
 466
 467 static void
 468 play_exit(void)
 469 {
 470         list_window_free(lw);
 471 }
 472
 473 static const char *
 474 play_title(char *str, size_t size)
 475 {
 476         if( strcmp(options.host, "localhost") == 0 )
 477                 return _("Playlist");
 478
 479         g_snprintf(str, size, _("Playlist on %s"), options.host);
 480         return str;
 481 }
 482
 483 static void
 484 play_paint(void)
 485 {
 486         list_window_paint(lw, list_callback, NULL);
 487 }
 488
 489 static void
 490 play_update(mpdclient_t *c)
 491 {
 492         static int prev_song_id = -1;
 493
 494         current_song_id = c->song != NULL && c->status != NULL &&
 495                 !IS_STOPPED(c->status->state) ? c->song->id : -1;
 496
 497         if (current_song_id != prev_song_id) {
 498                 prev_song_id = current_song_id;
 499
 500                 /* center the cursor */
 501                 if (options.auto_center && current_song_id != -1)
 502                         center_playing_item(c);
 503
 504                 playlist_repaint();
 505 #ifndef NCMPC_MINI
 506         } else if (options.scroll) {
 507                 /* always repaint if horizontal scrolling is
 508                    enabled */
 509                 playlist_repaint();
 510 #endif
 511         }
 512 }
 513
 514 #ifdef HAVE_GETMOUSE
 515 static bool
 516 handle_mouse_event(struct mpdclient *c)
 517 {
 518         int row;
 519         unsigned selected;
 520         unsigned long bstate;
 521
 522         if (screen_get_mouse_event(c, &bstate, &row) ||
 523             list_window_mouse(lw, playlist_length(playlist), bstate, row)) {
 524                 playlist_repaint();
 525                 return true;
 526         }
 527
 528         if (bstate & BUTTON1_DOUBLE_CLICKED) {
 529                 /* stop */
 530                 screen_cmd(c, CMD_STOP);
 531                 return true;
 532         }
 533
 534         selected = lw->start + row;
 535
 536         if (bstate & BUTTON1_CLICKED) {
 537                 /* play */
 538                 if (lw->start + row < playlist_length(playlist))
 539                         mpdclient_cmd_play(c, lw->start + row);
 540         } else if (bstate & BUTTON3_CLICKED) {
 541                 /* delete */
 542                 if (selected == lw->selected)
 543                         mpdclient_cmd_delete(c, lw->selected);
 544         }
 545
 546         lw->selected = selected;
 547         list_window_check_selected(lw, playlist_length(playlist));
 548         playlist_repaint();
 549
 550         return true;
 551 }
 552 #endif
 553
 554 static bool
 555 play_cmd(mpdclient_t *c, command_t cmd)
 556 {
 557         lw->hide_cursor = false;
 558
 559         if (options.hide_cursor > 0) {
 560                 if (timer_hide_cursor_id != 0)
 561                         g_source_remove(timer_hide_cursor_id);
 562                 timer_hide_cursor_id = g_timeout_add(options.hide_cursor * 1000,
 563                                                      timer_hide_cursor, c);
 564         }
 565
 566         if (list_window_cmd(lw, playlist_length(&c->playlist), cmd)) {
 567                 playlist_repaint();
 568                 return true;
 569         }
 570
 571         switch(cmd) {
 572         case CMD_PLAY:
 573                 mpdclient_cmd_play(c, lw->selected);
 574                 return true;
 575         case CMD_DELETE:
 576         {
 577                 int i = lw->selected_end, start = lw->selected_start;
 578                 for(; i >= start; --i)
 579                         mpdclient_cmd_delete(c, i);
 580
 581                 i++;
 582                 if(i >= (int)playlist_length(&c->playlist))
 583                         i--;
 584                 lw->selected = i;
 585                 lw->selected_start = i;
 586                 lw->selected_end = i;
 587                 lw->visual_selection = false;
 588
 589                 return true;
 590         }
 591         case CMD_SAVE_PLAYLIST:
 592                 playlist_save(c, NULL, NULL);
 593                 return true;
 594         case CMD_ADD:
 595                 handle_add_to_playlist(c);
 596                 return true;
 597         case CMD_SCREEN_UPDATE:
 598                 center_playing_item(c);
 599                 playlist_repaint();
 600                 return false;
 601         case CMD_SHUFFLE:
 602         {
 603                 unsigned i = lw->selected_start + 1;
 604                 unsigned last_selected = lw->selected;
 605                 if(!lw->visual_selection)
 606                         /* No visual selection, shuffle all list. */
 607                         break;
 608                 for(; i <= lw->selected_end; ++i)
 609                         mpdclient_cmd_move(c, i, lw->selected_start + (rand() % ((i - lw->selected_start) + 1)));
 610
 611                 lw->selected = last_selected;
 612                 screen_status_printf(_("Shuffled selection!"));
 613
 614                 return true;
 615         }
 616         case CMD_LIST_MOVE_UP:
 617                 if(lw->selected_start == 0)
 618                         return false;
 619                 if(lw->visual_selection)
 620                 {
 621                         unsigned i = lw->selected_start;
 622                         unsigned last_selected = lw->selected;
 623                         for(; i <= lw->selected_end; ++i)
 624                                 mpdclient_cmd_move(c, i, i-1);
 625                         lw->selected_start--;
 626                         lw->selected_end--;
 627                         lw->selected = last_selected - 1;
 628                         lw->visual_base--;
 629                 }
 630                 else
 631                         mpdclient_cmd_move(c, lw->selected, lw->selected-1);
 632                 return true;
 633         case CMD_LIST_MOVE_DOWN:
 634                 if(lw->selected_end+1 >= playlist_length(&c->playlist))
 635                         return false;
 636                 if(lw->visual_selection)
 637                 {
 638                         int i = lw->selected_end;
 639                         unsigned last_selected = lw->selected;
 640                         for(; i >= (int)lw->selected_start; --i)
 641                                 mpdclient_cmd_move(c, i, i+1);
 642                         lw->selected_start++;
 643                         lw->selected_end++;
 644                         lw->selected = last_selected + 1;
 645                         lw->visual_base++;
 646                 }
 647                 else
 648                         mpdclient_cmd_move(c, lw->selected, lw->selected+1);
 649                 return true;
 650         case CMD_LIST_FIND:
 651         case CMD_LIST_RFIND:
 652         case CMD_LIST_FIND_NEXT:
 653         case CMD_LIST_RFIND_NEXT:
 654                 screen_find(lw, playlist_length(&c->playlist),
 655                             cmd, list_callback, NULL);
 656                 playlist_repaint();
 657                 return true;
 658         case CMD_LIST_JUMP:
 659                 screen_jump(lw, list_callback, NULL);
 660                 playlist_repaint();
 661                 return true;
 662
 663 #ifdef HAVE_GETMOUSE
 664         case CMD_MOUSE_EVENT:
 665                 return handle_mouse_event(c);
 666 #endif
 667
 668 #ifdef ENABLE_SONG_SCREEN
 669         case CMD_VIEW:
 670                 if (lw->selected < playlist_length(&c->playlist)) {
 671                         screen_song_switch(c, playlist_get(&c->playlist, lw->selected));
 672                         return true;
 673                 }
 674
 675                 break;
 676 #endif
 677
 678         case CMD_LOCATE:
 679                 if (lw->selected < playlist_length(&c->playlist)) {
 680                         screen_file_goto_song(c, playlist_get(&c->playlist, lw->selected));
 681                         return true;
 682                 }
 683
 684                 break;
 685
 686 #ifdef ENABLE_LYRICS_SCREEN
 687         case CMD_SCREEN_LYRICS:
 688                 if (lw->selected < playlist_length(&c->playlist)) {
 689                         screen_lyrics_switch(c, playlist_get(&c->playlist, lw->selected));
 690                         return true;
 691                 }
 692
 693                 break;
 694 #endif
 695
 696         default:
 697                 break;
 698         }
 699
 700         return false;
 701 }
 702
 703 const struct screen_functions screen_playlist = {
 704         .init = play_init,
 705         .exit = play_exit,
 706         .open = play_open,
 707         .close = play_close,
 708         .resize = play_resize,
 709         .paint = play_paint,
 710         .update = play_update,
 711         .cmd = play_cmd,
 712         .get_title = play_title,
 713 };