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->range_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, bool center_cursor)
 141 {
 142         unsigned length = c->playlist.list->len;
 143         int idx;
 144
 145         if (!c->song || c->status == NULL ||
 146                 IS_STOPPED(c->status->state))
 147                 return;
 148
 149         /* try to center the song that are playing */
 150         idx = playlist_get_index(c, c->song);
 151         if (idx < 0)
 152                 return;
 153
 154         if (length < lw->rows)
 155         {
 156                 if (center_cursor)
 157                         list_window_set_selected(lw, idx);
 158                 return;
 159         }
 160
 161         list_window_center(lw, length, idx);
 162
 163         if (center_cursor) {
 164                 list_window_set_selected(lw, idx);
 165                 return;
 166         }
 167
 168         /* make sure the cursor is in the window */
 169         if (lw->selected < lw->start) {
 170                 lw->selected = lw->start;
 171                 if (lw->range_selection) {
 172                         lw->selected_start = lw->range_base;
 173                         lw->selected_end = lw->selected;
 174                 } else {
 175                         lw->selected_start = lw->selected;
 176                         lw->selected_end = lw->selected;
 177                 }
 178         } else if (lw->selected > lw->start + lw->rows - 1) {
 179                 lw->selected = lw->start + lw->rows - 1;
 180                 if (lw->range_selection) {
 181                         lw->selected_start = lw->selected;
 182                         lw->selected_end = lw->range_base;
 183                 } else {
 184                         lw->selected_start = lw->selected;
 185                         lw->selected_end = lw->selected;
 186                 }
 187         }
 188 }
 189
 190 #ifndef NCMPC_MINI
 191 static void
 192 save_pre_completion_cb(GCompletion *gcmp, G_GNUC_UNUSED gchar *line,
 193                        void *data)
 194 {
 195         completion_callback_data_t *tmp = (completion_callback_data_t *)data;
 196         GList **list = tmp->list;
 197         mpdclient_t *c = tmp->c;
 198
 199         if( *list == NULL ) {
 200                 /* create completion list */
 201                 *list = gcmp_list_from_path(c, "", NULL, GCMP_TYPE_PLAYLIST);
 202                 g_completion_add_items(gcmp, *list);
 203         }
 204 }
 205
 206 static void
 207 save_post_completion_cb(G_GNUC_UNUSED GCompletion *gcmp,
 208                         G_GNUC_UNUSED gchar *line, GList *items,
 209                         G_GNUC_UNUSED void *data)
 210 {
 211         if (g_list_length(items) >= 1)
 212                 screen_display_completion_list(items);
 213 }
 214 #endif
 215
 216 #ifndef NCMPC_MINI
 217 /**
 218  * Wrapper for strncmp().  We are not allowed to pass &strncmp to
 219  * g_completion_set_compare(), because strncmp() takes size_t where
 220  * g_completion_set_compare passes a gsize value.
 221  */
 222 static gint
 223 completion_strncmp(const gchar *s1, const gchar *s2, gsize n)
 224 {
 225         return strncmp(s1, s2, n);
 226 }
 227 #endif
 228
 229 int
 230 playlist_save(mpdclient_t *c, char *name, char *defaultname)
 231 {
 232         gchar *filename, *filename_utf8;
 233         gint error;
 234 #ifndef NCMPC_MINI
 235         GCompletion *gcmp;
 236         GList *list = NULL;
 237         completion_callback_data_t data;
 238 #endif
 239
 240 #ifdef NCMPC_MINI
 241         (void)defaultname;
 242 #endif
 243
 244 #ifndef NCMPC_MINI
 245         if (name == NULL) {
 246                 /* initialize completion support */
 247                 gcmp = g_completion_new(NULL);
 248                 g_completion_set_compare(gcmp, completion_strncmp);
 249                 data.list = &list;
 250                 data.dir_list = NULL;
 251                 data.c = c;
 252                 wrln_completion_callback_data = &data;
 253                 wrln_pre_completion_callback = save_pre_completion_cb;
 254                 wrln_post_completion_callback = save_post_completion_cb;
 255
 256
 257                 /* query the user for a filename */
 258                 filename = screen_readln(screen.status_window.w,
 259                                          _("Save playlist as"),
 260                                          defaultname,
 261                                          NULL,
 262                                          gcmp);
 263
 264                 /* destroy completion support */
 265                 wrln_completion_callback_data = NULL;
 266                 wrln_pre_completion_callback = NULL;
 267                 wrln_post_completion_callback = NULL;
 268                 g_completion_free(gcmp);
 269                 list = string_list_free(list);
 270                 if( filename )
 271                         filename=g_strstrip(filename);
 272         } else
 273 #endif
 274                         filename=g_strdup(name);
 275
 276         if (filename == NULL)
 277                 return -1;
 278
 279         /* send save command to mpd */
 280
 281         filename_utf8 = locale_to_utf8(filename);
 282         error = mpdclient_cmd_save_playlist(c, filename_utf8);
 283         g_free(filename_utf8);
 284
 285         if (error) {
 286                 gint code = GET_ACK_ERROR_CODE(error);
 287
 288                 if (code == MPD_ACK_ERROR_EXIST) {
 289                         char *buf;
 290                         int key;
 291
 292                         buf = g_strdup_printf(_("Replace %s [%s/%s] ? "),
 293                                               filename, YES, NO);
 294                         key = tolower(screen_getch(screen.status_window.w,
 295                                                    buf));
 296                         g_free(buf);
 297
 298                         if (key == YES[0]) {
 299                                 filename_utf8 = locale_to_utf8(filename);
 300                                 error = mpdclient_cmd_delete_playlist(c, filename_utf8);
 301                                 g_free(filename_utf8);
 302
 303                                 if (error) {
 304                                         g_free(filename);
 305                                         return -1;
 306                                 }
 307
 308                                 error = playlist_save(c, filename, NULL);
 309                                 g_free(filename);
 310                                 return error;
 311                         }
 312
 313                         screen_status_printf(_("Aborted"));
 314                 }
 315
 316                 g_free(filename);
 317                 return -1;
 318         }
 319
 320         /* success */
 321         screen_status_printf(_("Saved %s"), filename);
 322         g_free(filename);
 323         return 0;
 324 }
 325
 326 #ifndef NCMPC_MINI
 327 static void add_dir(GCompletion *gcmp, gchar *dir, GList **dir_list,
 328                     GList **list, mpdclient_t *c)
 329 {
 330         g_completion_remove_items(gcmp, *list);
 331         *list = string_list_remove(*list, dir);
 332         *list = gcmp_list_from_path(c, dir, *list, GCMP_TYPE_RFILE);
 333         g_completion_add_items(gcmp, *list);
 334         *dir_list = g_list_append(*dir_list, g_strdup(dir));
 335 }
 336
 337 static void add_pre_completion_cb(GCompletion *gcmp, gchar *line, void *data)
 338 {
 339         completion_callback_data_t *tmp = (completion_callback_data_t *)data;
 340         GList **dir_list = tmp->dir_list;
 341         GList **list = tmp->list;
 342         mpdclient_t *c = tmp->c;
 343
 344         if (*list == NULL) {
 345                 /* create initial list */
 346                 *list = gcmp_list_from_path(c, "", NULL, GCMP_TYPE_RFILE);
 347                 g_completion_add_items(gcmp, *list);
 348         } else if (line && line[0] && line[strlen(line)-1]=='/' &&
 349                    string_list_find(*dir_list, line) == NULL) {
 350                 /* add directory content to list */
 351                 add_dir(gcmp, line, dir_list, list, c);
 352         }
 353 }
 354
 355 static void add_post_completion_cb(GCompletion *gcmp, gchar *line,
 356                                    GList *items, void *data)
 357 {
 358         completion_callback_data_t *tmp = (completion_callback_data_t *)data;
 359         GList **dir_list = tmp->dir_list;
 360         GList **list = tmp->list;
 361         mpdclient_t *c = tmp->c;
 362
 363         if (g_list_length(items) >= 1)
 364                 screen_display_completion_list(items);
 365
 366         if (line && line[0] && line[strlen(line) - 1] == '/' &&
 367             string_list_find(*dir_list, line) == NULL) {
 368                 /* add directory content to list */
 369                 add_dir(gcmp, line, dir_list, list, c);
 370         }
 371 }
 372 #endif
 373
 374 static int
 375 handle_add_to_playlist(mpdclient_t *c)
 376 {
 377         gchar *path;
 378 #ifndef NCMPC_MINI
 379         GCompletion *gcmp;
 380         GList *list = NULL;
 381         GList *dir_list = NULL;
 382         completion_callback_data_t data;
 383
 384         /* initialize completion support */
 385         gcmp = g_completion_new(NULL);
 386         g_completion_set_compare(gcmp, completion_strncmp);
 387         data.list = &list;
 388         data.dir_list = &dir_list;
 389         data.c = c;
 390         wrln_completion_callback_data = &data;
 391         wrln_pre_completion_callback = add_pre_completion_cb;
 392         wrln_post_completion_callback = add_post_completion_cb;
 393 #endif
 394
 395         /* get path */
 396         path = screen_readln(screen.status_window.w,
 397                              _("Add"),
 398                              NULL,
 399                              NULL,
 400 #ifdef NCMPC_MINI
 401                              NULL
 402 #else
 403                              gcmp
 404 #endif
 405                              );
 406
 407         /* destroy completion data */
 408 #ifndef NCMPC_MINI
 409         wrln_completion_callback_data = NULL;
 410         wrln_pre_completion_callback = NULL;
 411         wrln_post_completion_callback = NULL;
 412         g_completion_free(gcmp);
 413         string_list_free(list);
 414         string_list_free(dir_list);
 415 #endif
 416
 417         /* add the path to the playlist */
 418         if (path != NULL) {
 419                 char *path_utf8 = locale_to_utf8(path);
 420                 mpdclient_cmd_add_path(c, path_utf8);
 421                 g_free(path_utf8);
 422         }
 423
 424         g_free(path);
 425         return 0;
 426 }
 427
 428 static void
 429 play_init(WINDOW *w, int cols, int rows)
 430 {
 431         lw = list_window_init(w, cols, rows);
 432 }
 433
 434 static gboolean
 435 timer_hide_cursor(gpointer data)
 436 {
 437         struct mpdclient *c = data;
 438
 439         assert(options.hide_cursor > 0);
 440         assert(timer_hide_cursor_id != 0);
 441
 442         timer_hide_cursor_id = 0;
 443
 444         /* hide the cursor when mpd is playing and the user is inactive */
 445
 446         if (c->status != NULL && c->status->state == MPD_STATUS_STATE_PLAY) {
 447                 lw->hide_cursor = true;
 448                 playlist_repaint();
 449         } else
 450                 timer_hide_cursor_id = g_timeout_add(options.hide_cursor * 1000,
 451                                                      timer_hide_cursor, c);
 452
 453         return FALSE;
 454 }
 455
 456 static void
 457 play_open(mpdclient_t *c)
 458 {
 459         static gboolean install_cb = TRUE;
 460
 461         playlist = &c->playlist;
 462
 463         assert(timer_hide_cursor_id == 0);
 464         if (options.hide_cursor > 0) {
 465                 lw->hide_cursor = false;
 466                 timer_hide_cursor_id = g_timeout_add(options.hide_cursor * 1000,
 467                                                      timer_hide_cursor, c);
 468         }
 469
 470         if (install_cb) {
 471                 mpdclient_install_playlist_callback(c, playlist_changed_callback);
 472                 install_cb = FALSE;
 473         }
 474 }
 475
 476 static void
 477 play_close(void)
 478 {
 479         if (timer_hide_cursor_id != 0) {
 480                 g_source_remove(timer_hide_cursor_id);
 481                 timer_hide_cursor_id = 0;
 482         }
 483 }
 484
 485 static void
 486 play_resize(int cols, int rows)
 487 {
 488         lw->cols = cols;
 489         lw->rows = rows;
 490 }
 491
 492
 493 static void
 494 play_exit(void)
 495 {
 496         list_window_free(lw);
 497 }
 498
 499 static const char *
 500 play_title(char *str, size_t size)
 501 {
 502         if( strcmp(options.host, "localhost") == 0 )
 503                 return _("Playlist");
 504
 505         g_snprintf(str, size, _("Playlist on %s"), options.host);
 506         return str;
 507 }
 508
 509 static void
 510 play_paint(void)
 511 {
 512         list_window_paint(lw, list_callback, NULL);
 513 }
 514
 515 static void
 516 play_update(mpdclient_t *c)
 517 {
 518         static int prev_song_id = -1;
 519
 520         current_song_id = c->song != NULL && c->status != NULL &&
 521                 !IS_STOPPED(c->status->state) ? c->song->id : -1;
 522
 523         if (current_song_id != prev_song_id) {
 524                 prev_song_id = current_song_id;
 525
 526                 /* center the cursor */
 527                 if (options.auto_center && current_song_id != -1 && ! lw->range_selection)
 528                         center_playing_item(c, false);
 529
 530                 playlist_repaint();
 531 #ifndef NCMPC_MINI
 532         } else if (options.scroll) {
 533                 /* always repaint if horizontal scrolling is
 534                    enabled */
 535                 playlist_repaint();
 536 #endif
 537         }
 538 }
 539
 540 #ifdef HAVE_GETMOUSE
 541 static bool
 542 handle_mouse_event(struct mpdclient *c)
 543 {
 544         int row;
 545         unsigned selected;
 546         unsigned long bstate;
 547
 548         if (screen_get_mouse_event(c, &bstate, &row) ||
 549             list_window_mouse(lw, playlist_length(playlist), bstate, row)) {
 550                 playlist_repaint();
 551                 return true;
 552         }
 553
 554         if (bstate & BUTTON1_DOUBLE_CLICKED) {
 555                 /* stop */
 556                 screen_cmd(c, CMD_STOP);
 557                 return true;
 558         }
 559
 560         selected = lw->start + row;
 561
 562         if (bstate & BUTTON1_CLICKED) {
 563                 /* play */
 564                 if (lw->start + row < playlist_length(playlist))
 565                         mpdclient_cmd_play(c, lw->start + row);
 566         } else if (bstate & BUTTON3_CLICKED) {
 567                 /* delete */
 568                 if (selected == lw->selected)
 569                         mpdclient_cmd_delete(c, lw->selected);
 570         }
 571
 572         lw->selected = selected;
 573         list_window_check_selected(lw, playlist_length(playlist));
 574         playlist_repaint();
 575
 576         return true;
 577 }
 578 #endif
 579
 580 static bool
 581 play_cmd(mpdclient_t *c, command_t cmd)
 582 {
 583         static command_t cached_cmd = CMD_NONE;
 584         command_t prev_cmd = cached_cmd;
 585         cached_cmd = cmd;
 586
 587         lw->hide_cursor = false;
 588
 589         if (options.hide_cursor > 0) {
 590                 if (timer_hide_cursor_id != 0)
 591                         g_source_remove(timer_hide_cursor_id);
 592                 timer_hide_cursor_id = g_timeout_add(options.hide_cursor * 1000,
 593                                                      timer_hide_cursor, c);
 594         }
 595
 596         if (list_window_cmd(lw, playlist_length(&c->playlist), cmd)) {
 597                 playlist_repaint();
 598                 return true;
 599         }
 600
 601         switch(cmd) {
 602         case CMD_PLAY:
 603                 mpdclient_cmd_play(c, lw->selected);
 604                 return true;
 605         case CMD_DELETE:
 606         {
 607                 int i = lw->selected_end, start = lw->selected_start;
 608                 for(; i >= start; --i)
 609                         mpdclient_cmd_delete(c, i);
 610
 611                 i++;
 612                 if(i >= (int)playlist_length(&c->playlist))
 613                         i--;
 614                 lw->selected = i;
 615                 lw->selected_start = i;
 616                 lw->selected_end = i;
 617                 lw->range_selection = false;
 618
 619                 return true;
 620         }
 621         case CMD_SAVE_PLAYLIST:
 622                 playlist_save(c, NULL, NULL);
 623                 return true;
 624         case CMD_ADD:
 625                 handle_add_to_playlist(c);
 626                 return true;
 627         case CMD_SCREEN_UPDATE:
 628                 center_playing_item(c, prev_cmd == CMD_SCREEN_UPDATE);
 629                 playlist_repaint();
 630                 return false;
 631         case CMD_SHUFFLE:
 632         {
 633                 if(!lw->range_selection)
 634                         /* No range selection, shuffle all list. */
 635                         break;
 636
 637                 if (mpdclient_cmd_shuffle_range(c, lw->selected_start, lw->selected_end+1) == 0)
 638                         screen_status_message(_("Shuffled playlist"));
 639
 640                 return true;
 641         }
 642         case CMD_LIST_MOVE_UP:
 643                 if(lw->selected_start == 0)
 644                         return false;
 645                 if(lw->range_selection)
 646                 {
 647                         unsigned i = lw->selected_start;
 648                         unsigned last_selected = lw->selected;
 649                         for(; i <= lw->selected_end; ++i)
 650                                 mpdclient_cmd_move(c, i, i-1);
 651                         lw->selected_start--;
 652                         lw->selected_end--;
 653                         lw->selected = last_selected - 1;
 654                         lw->range_base--;
 655                 }
 656                 else
 657                 {
 658                         mpdclient_cmd_move(c, lw->selected, lw->selected-1);
 659                         lw->selected--;
 660                         lw->selected_start--;
 661                         lw->selected_end--;
 662                 }
 663                 return true;
 664         case CMD_LIST_MOVE_DOWN:
 665                 if(lw->selected_end+1 >= playlist_length(&c->playlist))
 666                         return false;
 667                 if(lw->range_selection)
 668                 {
 669                         int i = lw->selected_end;
 670                         unsigned last_selected = lw->selected;
 671                         for(; i >= (int)lw->selected_start; --i)
 672                                 mpdclient_cmd_move(c, i, i+1);
 673                         lw->selected_start++;
 674                         lw->selected_end++;
 675                         lw->selected = last_selected + 1;
 676                         lw->range_base++;
 677                 }
 678                 else
 679                 {
 680                         mpdclient_cmd_move(c, lw->selected, lw->selected+1);
 681                         lw->selected++;
 682                         lw->selected_start++;
 683                         lw->selected_end++;
 684                 }
 685                 return true;
 686         case CMD_LIST_FIND:
 687         case CMD_LIST_RFIND:
 688         case CMD_LIST_FIND_NEXT:
 689         case CMD_LIST_RFIND_NEXT:
 690                 screen_find(lw, playlist_length(&c->playlist),
 691                             cmd, list_callback, NULL);
 692                 playlist_repaint();
 693                 return true;
 694         case CMD_LIST_JUMP:
 695                 screen_jump(lw, list_callback, NULL);
 696                 playlist_repaint();
 697                 return true;
 698
 699 #ifdef HAVE_GETMOUSE
 700         case CMD_MOUSE_EVENT:
 701                 return handle_mouse_event(c);
 702 #endif
 703
 704 #ifdef ENABLE_SONG_SCREEN
 705         case CMD_SCREEN_SONG:
 706                 if (lw->selected < playlist_length(&c->playlist)) {
 707                         screen_song_switch(c, playlist_get(&c->playlist, lw->selected));
 708                         return true;
 709                 }
 710
 711                 break;
 712 #endif
 713
 714         case CMD_LOCATE:
 715                 if (lw->selected < playlist_length(&c->playlist)) {
 716                         screen_file_goto_song(c, playlist_get(&c->playlist, lw->selected));
 717                         return true;
 718                 }
 719
 720                 break;
 721
 722 #ifdef ENABLE_LYRICS_SCREEN
 723         case CMD_SCREEN_LYRICS:
 724                 if (lw->selected < playlist_length(&c->playlist)) {
 725                         screen_lyrics_switch(c, playlist_get(&c->playlist, lw->selected));
 726                         return true;
 727                 }
 728
 729                 break;
 730 #endif
 731         case CMD_SCREEN_SWAP:
 732                 screen_swap(c, playlist_get(&c->playlist, lw->selected));
 733                 return true;
 734
 735         default:
 736                 break;
 737         }
 738
 739         return false;
 740 }
 741
 742 const struct screen_functions screen_playlist = {
 743         .init = play_init,
 744         .exit = play_exit,
 745         .open = play_open,
 746         .close = play_close,
 747         .resize = play_resize,
 748         .paint = play_paint,
 749         .update = play_update,
 750         .cmd = play_cmd,
 751         .get_title = play_title,
 752 };