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                 lw->selected = *((int *) data);
  85                 if (lw->selected < lw->start)
  86                         lw->start--;
  87                 break;
  88         default:
  89                 break;
  90         }
  91
  92         list_window_check_selected(lw, c->playlist.list->len);
  93         playlist_repaint_if_active();
  94 }
  95
  96 static const char *
  97 list_callback(unsigned idx, bool *highlight, G_GNUC_UNUSED void *data)
  98 {
  99         static char songname[MAX_SONG_LENGTH];
 100 #ifndef NCMPC_MINI
 101         static scroll_state_t st;
 102 #endif
 103         mpd_Song *song;
 104
 105         if (playlist == NULL || idx >= playlist_length(playlist))
 106                 return NULL;
 107
 108         song = playlist_get(playlist, idx);
 109         if (song->id == current_song_id)
 110                 *highlight = true;
 111
 112         strfsong(songname, MAX_SONG_LENGTH, options.list_format, song);
 113
 114 #ifndef NCMPC_MINI
 115         if (options.scroll && (unsigned)song->pos == lw->selected &&
 116             utf8_width(songname) > (unsigned)COLS) {
 117                 static unsigned current_song;
 118                 char *tmp;
 119
 120                 if (current_song != lw->selected) {
 121                         st.offset = 0;
 122                         current_song = lw->selected;
 123                 }
 124
 125                 tmp = strscroll(songname, options.scroll_sep,
 126                                 MAX_SONG_LENGTH, &st);
 127                 g_strlcpy(songname, tmp, MAX_SONG_LENGTH);
 128                 g_free(tmp);
 129         } else if ((unsigned)song->pos == lw->selected)
 130                 st.offset = 0;
 131 #endif
 132
 133         return songname;
 134 }
 135
 136 static void
 137 center_playing_item(mpdclient_t *c)
 138 {
 139         unsigned length = c->playlist.list->len;
 140         unsigned offset = lw->selected - lw->start;
 141         int idx;
 142
 143         if (!c->song || length < lw->rows ||
 144             c->status == NULL || IS_STOPPED(c->status->state))
 145                 return;
 146
 147         /* try to center the song that are playing */
 148         idx = playlist_get_index(c, c->song);
 149         if (idx < 0)
 150                 return;
 151
 152         list_window_center(lw, length, idx);
 153
 154         /* make sure the cursor is in the window */
 155         lw->selected = lw->start+offset;
 156         list_window_check_selected(lw, length);
 157 }
 158
 159 #ifndef NCMPC_MINI
 160 static void
 161 save_pre_completion_cb(GCompletion *gcmp, G_GNUC_UNUSED gchar *line,
 162                        void *data)
 163 {
 164         completion_callback_data_t *tmp = (completion_callback_data_t *)data;
 165         GList **list = tmp->list;
 166         mpdclient_t *c = tmp->c;
 167
 168         if( *list == NULL ) {
 169                 /* create completion list */
 170                 *list = gcmp_list_from_path(c, "", NULL, GCMP_TYPE_PLAYLIST);
 171                 g_completion_add_items(gcmp, *list);
 172         }
 173 }
 174
 175 static void
 176 save_post_completion_cb(G_GNUC_UNUSED GCompletion *gcmp,
 177                         G_GNUC_UNUSED gchar *line, GList *items,
 178                         G_GNUC_UNUSED void *data)
 179 {
 180         if (g_list_length(items) >= 1)
 181                 screen_display_completion_list(items);
 182 }
 183 #endif
 184
 185 #ifndef NCMPC_MINI
 186 /**
 187  * Wrapper for strncmp().  We are not allowed to pass &strncmp to
 188  * g_completion_set_compare(), because strncmp() takes size_t where
 189  * g_completion_set_compare passes a gsize value.
 190  */
 191 static gint
 192 completion_strncmp(const gchar *s1, const gchar *s2, gsize n)
 193 {
 194         return strncmp(s1, s2, n);
 195 }
 196 #endif
 197
 198 int
 199 playlist_save(mpdclient_t *c, char *name, char *defaultname)
 200 {
 201         gchar *filename, *filename_utf8;
 202         gint error;
 203 #ifndef NCMPC_MINI
 204         GCompletion *gcmp;
 205         GList *list = NULL;
 206         completion_callback_data_t data;
 207 #endif
 208
 209 #ifdef NCMPC_MINI
 210         (void)defaultname;
 211 #endif
 212
 213 #ifndef NCMPC_MINI
 214         if (name == NULL) {
 215                 /* initialize completion support */
 216                 gcmp = g_completion_new(NULL);
 217                 g_completion_set_compare(gcmp, completion_strncmp);
 218                 data.list = &list;
 219                 data.dir_list = NULL;
 220                 data.c = c;
 221                 wrln_completion_callback_data = &data;
 222                 wrln_pre_completion_callback = save_pre_completion_cb;
 223                 wrln_post_completion_callback = save_post_completion_cb;
 224
 225
 226                 /* query the user for a filename */
 227                 filename = screen_readln(screen.status_window.w,
 228                                          _("Save playlist as: "),
 229                                          defaultname,
 230                                          NULL,
 231                                          gcmp);
 232
 233                 /* destroy completion support */
 234                 wrln_completion_callback_data = NULL;
 235                 wrln_pre_completion_callback = NULL;
 236                 wrln_post_completion_callback = NULL;
 237                 g_completion_free(gcmp);
 238                 list = string_list_free(list);
 239                 if( filename )
 240                         filename=g_strstrip(filename);
 241         } else
 242 #endif
 243                         filename=g_strdup(name);
 244
 245         if (filename == NULL)
 246                 return -1;
 247
 248         /* send save command to mpd */
 249
 250         filename_utf8 = locale_to_utf8(filename);
 251         error = mpdclient_cmd_save_playlist(c, filename_utf8);
 252         g_free(filename_utf8);
 253
 254         if (error) {
 255                 gint code = GET_ACK_ERROR_CODE(error);
 256
 257                 if (code == MPD_ACK_ERROR_EXIST) {
 258                         char *buf;
 259                         int key;
 260
 261                         buf = g_strdup_printf(_("Replace %s [%s/%s] ? "),
 262                                               filename, YES, NO);
 263                         key = tolower(screen_getch(screen.status_window.w,
 264                                                    buf));
 265                         g_free(buf);
 266
 267                         if (key == YES[0]) {
 268                                 filename_utf8 = locale_to_utf8(filename);
 269                                 error = mpdclient_cmd_delete_playlist(c, filename_utf8);
 270                                 g_free(filename_utf8);
 271
 272                                 if (error) {
 273                                         g_free(filename);
 274                                         return -1;
 275                                 }
 276
 277                                 error = playlist_save(c, filename, NULL);
 278                                 g_free(filename);
 279                                 return error;
 280                         }
 281
 282                         screen_status_printf(_("Aborted"));
 283                 }
 284
 285                 g_free(filename);
 286                 return -1;
 287         }
 288
 289         /* success */
 290         screen_status_printf(_("Saved %s"), filename);
 291         g_free(filename);
 292         return 0;
 293 }
 294
 295 #ifndef NCMPC_MINI
 296 static void add_dir(GCompletion *gcmp, gchar *dir, GList **dir_list,
 297                     GList **list, mpdclient_t *c)
 298 {
 299         g_completion_remove_items(gcmp, *list);
 300         *list = string_list_remove(*list, dir);
 301         *list = gcmp_list_from_path(c, dir, *list, GCMP_TYPE_RFILE);
 302         g_completion_add_items(gcmp, *list);
 303         *dir_list = g_list_append(*dir_list, g_strdup(dir));
 304 }
 305
 306 static void add_pre_completion_cb(GCompletion *gcmp, gchar *line, void *data)
 307 {
 308         completion_callback_data_t *tmp = (completion_callback_data_t *)data;
 309         GList **dir_list = tmp->dir_list;
 310         GList **list = tmp->list;
 311         mpdclient_t *c = tmp->c;
 312
 313         if (*list == NULL) {
 314                 /* create initial list */
 315                 *list = gcmp_list_from_path(c, "", NULL, GCMP_TYPE_RFILE);
 316                 g_completion_add_items(gcmp, *list);
 317         } else if (line && line[0] && line[strlen(line)-1]=='/' &&
 318                    string_list_find(*dir_list, line) == NULL) {
 319                 /* add directory content to list */
 320                 add_dir(gcmp, line, dir_list, list, c);
 321         }
 322 }
 323
 324 static void add_post_completion_cb(GCompletion *gcmp, gchar *line,
 325                                    GList *items, void *data)
 326 {
 327         completion_callback_data_t *tmp = (completion_callback_data_t *)data;
 328         GList **dir_list = tmp->dir_list;
 329         GList **list = tmp->list;
 330         mpdclient_t *c = tmp->c;
 331
 332         if (g_list_length(items) >= 1)
 333                 screen_display_completion_list(items);
 334
 335         if (line && line[0] && line[strlen(line) - 1] == '/' &&
 336             string_list_find(*dir_list, line) == NULL) {
 337                 /* add directory content to list */
 338                 add_dir(gcmp, line, dir_list, list, c);
 339         }
 340 }
 341 #endif
 342
 343 static int
 344 handle_add_to_playlist(mpdclient_t *c)
 345 {
 346         gchar *path;
 347 #ifndef NCMPC_MINI
 348         GCompletion *gcmp;
 349         GList *list = NULL;
 350         GList *dir_list = NULL;
 351         completion_callback_data_t data;
 352
 353         /* initialize completion support */
 354         gcmp = g_completion_new(NULL);
 355         g_completion_set_compare(gcmp, completion_strncmp);
 356         data.list = &list;
 357         data.dir_list = &dir_list;
 358         data.c = c;
 359         wrln_completion_callback_data = &data;
 360         wrln_pre_completion_callback = add_pre_completion_cb;
 361         wrln_post_completion_callback = add_post_completion_cb;
 362 #endif
 363
 364         /* get path */
 365         path = screen_readln(screen.status_window.w,
 366                              _("Add: "),
 367                              NULL,
 368                              NULL,
 369 #ifdef NCMPC_MINI
 370                              NULL
 371 #else
 372                              gcmp
 373 #endif
 374                              );
 375
 376         /* destroy completion data */
 377 #ifndef NCMPC_MINI
 378         wrln_completion_callback_data = NULL;
 379         wrln_pre_completion_callback = NULL;
 380         wrln_post_completion_callback = NULL;
 381         g_completion_free(gcmp);
 382         string_list_free(list);
 383         string_list_free(dir_list);
 384 #endif
 385
 386         /* add the path to the playlist */
 387         if (path != NULL) {
 388                 char *path_utf8 = locale_to_utf8(path);
 389                 mpdclient_cmd_add_path(c, path_utf8);
 390                 g_free(path_utf8);
 391         }
 392
 393         g_free(path);
 394         return 0;
 395 }
 396
 397 static void
 398 play_init(WINDOW *w, int cols, int rows)
 399 {
 400         lw = list_window_init(w, cols, rows);
 401 }
 402
 403 static gboolean
 404 timer_hide_cursor(gpointer data)
 405 {
 406         struct mpdclient *c = data;
 407
 408         assert(options.hide_cursor > 0);
 409         assert(timer_hide_cursor_id != 0);
 410
 411         timer_hide_cursor_id = 0;
 412
 413         /* hide the cursor when mpd is playing and the user is inactive */
 414
 415         if (c->status != NULL && c->status->state == MPD_STATUS_STATE_PLAY) {
 416                 lw->hide_cursor = true;
 417                 playlist_repaint();
 418         } else
 419                 timer_hide_cursor_id = g_timeout_add(options.hide_cursor * 1000,
 420                                                      timer_hide_cursor, c);
 421
 422         return FALSE;
 423 }
 424
 425 static void
 426 play_open(mpdclient_t *c)
 427 {
 428         static gboolean install_cb = TRUE;
 429
 430         playlist = &c->playlist;
 431
 432         assert(timer_hide_cursor_id == 0);
 433         if (options.hide_cursor > 0) {
 434                 lw->hide_cursor = false;
 435                 timer_hide_cursor_id = g_timeout_add(options.hide_cursor * 1000,
 436                                                      timer_hide_cursor, c);
 437         }
 438
 439         if (install_cb) {
 440                 mpdclient_install_playlist_callback(c, playlist_changed_callback);
 441                 install_cb = FALSE;
 442         }
 443 }
 444
 445 static void
 446 play_close(void)
 447 {
 448         if (timer_hide_cursor_id != 0) {
 449                 g_source_remove(timer_hide_cursor_id);
 450                 timer_hide_cursor_id = 0;
 451         }
 452 }
 453
 454 static void
 455 play_resize(int cols, int rows)
 456 {
 457         lw->cols = cols;
 458         lw->rows = rows;
 459 }
 460
 461
 462 static void
 463 play_exit(void)
 464 {
 465         list_window_free(lw);
 466 }
 467
 468 static const char *
 469 play_title(char *str, size_t size)
 470 {
 471         if( strcmp(options.host, "localhost") == 0 )
 472                 return _("Playlist");
 473
 474         g_snprintf(str, size, _("Playlist on %s"), options.host);
 475         return str;
 476 }
 477
 478 static void
 479 play_paint(void)
 480 {
 481         list_window_paint(lw, list_callback, NULL);
 482 }
 483
 484 static void
 485 play_update(mpdclient_t *c)
 486 {
 487         static int prev_song_id = -1;
 488
 489         current_song_id = c->song != NULL && c->status != NULL &&
 490                 !IS_STOPPED(c->status->state) ? c->song->id : -1;
 491
 492         if (current_song_id != prev_song_id) {
 493                 prev_song_id = current_song_id;
 494
 495                 /* center the cursor */
 496                 if (options.auto_center && current_song_id != -1)
 497                         center_playing_item(c);
 498
 499                 playlist_repaint();
 500 #ifndef NCMPC_MINI
 501         } else if (options.scroll) {
 502                 /* always repaint if horizontal scrolling is
 503                    enabled */
 504                 playlist_repaint();
 505 #endif
 506         }
 507 }
 508
 509 #ifdef HAVE_GETMOUSE
 510 static bool
 511 handle_mouse_event(struct mpdclient *c)
 512 {
 513         int row;
 514         unsigned selected;
 515         unsigned long bstate;
 516
 517         if (screen_get_mouse_event(c, &bstate, &row) ||
 518             list_window_mouse(lw, playlist_length(playlist), bstate, row)) {
 519                 playlist_repaint();
 520                 return true;
 521         }
 522
 523         if (bstate & BUTTON1_DOUBLE_CLICKED) {
 524                 /* stop */
 525                 screen_cmd(c, CMD_STOP);
 526                 return true;
 527         }
 528
 529         selected = lw->start + row;
 530
 531         if (bstate & BUTTON1_CLICKED) {
 532                 /* play */
 533                 if (lw->start + row < playlist_length(playlist))
 534                         mpdclient_cmd_play(c, lw->start + row);
 535         } else if (bstate & BUTTON3_CLICKED) {
 536                 /* delete */
 537                 if (selected == lw->selected)
 538                         mpdclient_cmd_delete(c, lw->selected);
 539         }
 540
 541         lw->selected = selected;
 542         list_window_check_selected(lw, playlist_length(playlist));
 543         playlist_repaint();
 544
 545         return true;
 546 }
 547 #endif
 548
 549 static bool
 550 play_cmd(mpdclient_t *c, command_t cmd)
 551 {
 552         lw->hide_cursor = false;
 553
 554         if (options.hide_cursor > 0) {
 555                 if (timer_hide_cursor_id != 0)
 556                         g_source_remove(timer_hide_cursor_id);
 557                 timer_hide_cursor_id = g_timeout_add(options.hide_cursor * 1000,
 558                                                      timer_hide_cursor, c);
 559         }
 560
 561         if (list_window_cmd(lw, playlist_length(&c->playlist), cmd)) {
 562                 playlist_repaint();
 563                 return true;
 564         }
 565
 566         switch(cmd) {
 567         case CMD_PLAY:
 568                 mpdclient_cmd_play(c, lw->selected);
 569                 return true;
 570         case CMD_DELETE:
 571                 mpdclient_cmd_delete(c, lw->selected);
 572                 return true;
 573         case CMD_SAVE_PLAYLIST:
 574                 playlist_save(c, NULL, NULL);
 575                 return true;
 576         case CMD_ADD:
 577                 handle_add_to_playlist(c);
 578                 return true;
 579         case CMD_SCREEN_UPDATE:
 580                 center_playing_item(c);
 581                 playlist_repaint();
 582                 return false;
 583
 584         case CMD_LIST_MOVE_UP:
 585                 mpdclient_cmd_move(c, lw->selected, lw->selected-1);
 586                 return true;
 587         case CMD_LIST_MOVE_DOWN:
 588                 mpdclient_cmd_move(c, lw->selected, lw->selected+1);
 589                 return true;
 590         case CMD_LIST_FIND:
 591         case CMD_LIST_RFIND:
 592         case CMD_LIST_FIND_NEXT:
 593         case CMD_LIST_RFIND_NEXT:
 594                 screen_find(lw, playlist_length(&c->playlist),
 595                             cmd, list_callback, NULL);
 596                 playlist_repaint();
 597                 return true;
 598
 599 #ifdef HAVE_GETMOUSE
 600         case CMD_MOUSE_EVENT:
 601                 return handle_mouse_event(c);
 602 #endif
 603
 604 #ifdef ENABLE_SONG_SCREEN
 605         case CMD_VIEW:
 606                 if (lw->selected < playlist_length(&c->playlist)) {
 607                         screen_song_switch(c, playlist_get(&c->playlist, lw->selected));
 608                         return true;
 609                 }
 610
 611                 break;
 612 #endif
 613
 614         case CMD_LOCATE:
 615                 if (lw->selected < playlist_length(&c->playlist)) {
 616                         screen_file_goto_song(c, playlist_get(&c->playlist, lw->selected));
 617                         return true;
 618                 }
 619
 620                 break;
 621
 622 #ifdef ENABLE_LYRICS_SCREEN
 623         case CMD_SCREEN_LYRICS:
 624                 if (lw->selected < playlist_length(&c->playlist)) {
 625                         screen_lyrics_switch(c, playlist_get(&c->playlist, lw->selected));
 626                         return true;
 627                 }
 628
 629                 break;
 630 #endif
 631
 632         default:
 633                 break;
 634         }
 635
 636         return false;
 637 }
 638
 639 const struct screen_functions screen_playlist = {
 640         .init = play_init,
 641         .exit = play_exit,
 642         .open = play_open,
 643         .close = play_close,
 644         .resize = play_resize,
 645         .paint = play_paint,
 646         .update = play_update,
 647         .cmd = play_cmd,
 648         .get_title = play_title,
 649 };