src/screen_play.c

   1 /*
   2  * (c) 2004 by Kalle Wallin <kaw@linux.se>
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  * You should have received a copy of the GNU General Public License
  14  * along with this program; if not, write to the Free Software
  15  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  16  *
  17  */
  18
  19 #include "config.h"
  20 #include "i18n.h"
  21 #include "charset.h"
  22 #include "options.h"
  23 #include "mpdclient.h"
  24 #include "utils.h"
  25 #include "strfsong.h"
  26 #include "wreadln.h"
  27 #include "command.h"
  28 #include "colors.h"
  29 #include "screen.h"
  30 #include "screen_utils.h"
  31 #include "screen_play.h"
  32
  33 #ifndef NCMPC_MINI
  34 #include "hscroll.h"
  35 #endif
  36
  37 #include <ctype.h>
  38 #include <stdlib.h>
  39 #include <string.h>
  40 #include <time.h>
  41 #include <glib.h>
  42
  43 #define MAX_SONG_LENGTH 512
  44
  45 #ifndef NCMPC_MINI
  46 typedef struct
  47 {
  48         GList **list;
  49         GList **dir_list;
  50         mpdclient_t *c;
  51 } completion_callback_data_t;
  52 #endif
  53
  54 static struct mpdclient_playlist *playlist;
  55 static int current_song_id = -1;
  56 static list_window_t *lw = NULL;
  57 static guint timer_hide_cursor_id;
  58
  59 static void
  60 play_paint(void);
  61
  62 static void
  63 playlist_repaint(void)
  64 {
  65         play_paint();
  66         wrefresh(lw->w);
  67 }
  68
  69 static void
  70 playlist_repaint_if_active(void)
  71 {
  72         if (screen_is_visible(&screen_playlist))
  73                 playlist_repaint();
  74 }
  75
  76 static void
  77 playlist_changed_callback(mpdclient_t *c, int event, gpointer data)
  78 {
  79         switch (event) {
  80         case PLAYLIST_EVENT_DELETE:
  81                 break;
  82         case PLAYLIST_EVENT_MOVE:
  83                 lw->selected = *((int *) data);
  84                 if (lw->selected < lw->start)
  85                         lw->start--;
  86                 break;
  87         default:
  88                 break;
  89         }
  90
  91         list_window_check_selected(lw, c->playlist.list->len);
  92         playlist_repaint_if_active();
  93 }
  94
  95 static const char *
  96 list_callback(unsigned idx, bool *highlight, G_GNUC_UNUSED void *data)
  97 {
  98         static char songname[MAX_SONG_LENGTH];
  99 #ifndef NCMPC_MINI
 100         static scroll_state_t st;
 101 #endif
 102         mpd_Song *song;
 103
 104         if (playlist == NULL || idx >= playlist_length(playlist))
 105                 return NULL;
 106
 107         song = playlist_get(playlist, idx);
 108         if (song->id == current_song_id)
 109                 *highlight = true;
 110
 111         strfsong(songname, MAX_SONG_LENGTH, options.list_format, song);
 112
 113 #ifndef NCMPC_MINI
 114         if (options.scroll && (unsigned)song->pos == lw->selected &&
 115             utf8_width(songname) > (unsigned)COLS) {
 116                 static unsigned current_song;
 117                 char *tmp;
 118
 119                 if (current_song != lw->selected) {
 120                         st.offset = 0;
 121                         current_song = lw->selected;
 122                 }
 123
 124                 tmp = strscroll(songname, options.scroll_sep,
 125                                 MAX_SONG_LENGTH, &st);
 126                 g_strlcpy(songname, tmp, MAX_SONG_LENGTH);
 127                 g_free(tmp);
 128         } else if ((unsigned)song->pos == lw->selected)
 129                 st.offset = 0;
 130 #endif
 131
 132         return songname;
 133 }
 134
 135 static void
 136 center_playing_item(mpdclient_t *c)
 137 {
 138         unsigned length = c->playlist.list->len;
 139         unsigned offset = lw->selected - lw->start;
 140         int idx;
 141
 142         if (!c->song || length < lw->rows ||
 143             c->status == NULL || IS_STOPPED(c->status->state))
 144                 return;
 145
 146         /* try to center the song that are playing */
 147         idx = playlist_get_index(c, c->song);
 148         if (idx < 0)
 149                 return;
 150
 151         list_window_center(lw, length, idx);
 152
 153         /* make sure the cursor is in the window */
 154         lw->selected = lw->start+offset;
 155         list_window_check_selected(lw, length);
 156 }
 157
 158 #ifndef NCMPC_MINI
 159 static void
 160 save_pre_completion_cb(GCompletion *gcmp, G_GNUC_UNUSED gchar *line,
 161                        void *data)
 162 {
 163         completion_callback_data_t *tmp = (completion_callback_data_t *)data;
 164         GList **list = tmp->list;
 165         mpdclient_t *c = tmp->c;
 166
 167         if( *list == NULL ) {
 168                 /* create completion list */
 169                 *list = gcmp_list_from_path(c, "", NULL, GCMP_TYPE_PLAYLIST);
 170                 g_completion_add_items(gcmp, *list);
 171         }
 172 }
 173
 174 static void
 175 save_post_completion_cb(G_GNUC_UNUSED GCompletion *gcmp,
 176                         G_GNUC_UNUSED gchar *line, GList *items,
 177                         G_GNUC_UNUSED void *data)
 178 {
 179         if (g_list_length(items) >= 1)
 180                 screen_display_completion_list(items);
 181 }
 182 #endif
 183
 184 #ifndef NCMPC_MINI
 185 /**
 186  * Wrapper for strncmp().  We are not allowed to pass &strncmp to
 187  * g_completion_set_compare(), because strncmp() takes size_t where
 188  * g_completion_set_compare passes a gsize value.
 189  */
 190 static gint
 191 completion_strncmp(const gchar *s1, const gchar *s2, gsize n)
 192 {
 193         return strncmp(s1, s2, n);
 194 }
 195 #endif
 196
 197 int
 198 playlist_save(mpdclient_t *c, char *name, char *defaultname)
 199 {
 200         gchar *filename, *filename_utf8;
 201         gint error;
 202 #ifndef NCMPC_MINI
 203         GCompletion *gcmp;
 204         GList *list = NULL;
 205         completion_callback_data_t data;
 206 #endif
 207
 208 #ifdef NCMPC_MINI
 209         (void)defaultname;
 210 #endif
 211
 212 #ifndef NCMPC_MINI
 213         if (name == NULL) {
 214                 /* initialize completion support */
 215                 gcmp = g_completion_new(NULL);
 216                 g_completion_set_compare(gcmp, completion_strncmp);
 217                 data.list = &list;
 218                 data.dir_list = NULL;
 219                 data.c = c;
 220                 wrln_completion_callback_data = &data;
 221                 wrln_pre_completion_callback = save_pre_completion_cb;
 222                 wrln_post_completion_callback = save_post_completion_cb;
 223
 224
 225                 /* query the user for a filename */
 226                 filename = screen_readln(screen.status_window.w,
 227                                          _("Save playlist as: "),
 228                                          defaultname,
 229                                          NULL,
 230                                          gcmp);
 231
 232                 /* destroy completion support */
 233                 wrln_completion_callback_data = NULL;
 234                 wrln_pre_completion_callback = NULL;
 235                 wrln_post_completion_callback = NULL;
 236                 g_completion_free(gcmp);
 237                 list = string_list_free(list);
 238                 if( filename )
 239                         filename=g_strstrip(filename);
 240         } else
 241 #endif
 242                         filename=g_strdup(name);
 243
 244         if (filename == NULL)
 245                 return -1;
 246
 247         /* send save command to mpd */
 248
 249         filename_utf8 = locale_to_utf8(filename);
 250         error = mpdclient_cmd_save_playlist(c, filename_utf8);
 251         g_free(filename_utf8);
 252
 253         if (error) {
 254                 gint code = GET_ACK_ERROR_CODE(error);
 255
 256                 if (code == MPD_ACK_ERROR_EXIST) {
 257                         char *buf;
 258                         int key;
 259
 260                         buf = g_strdup_printf(_("Replace %s [%s/%s] ? "),
 261                                               filename, YES, NO);
 262                         key = tolower(screen_getch(screen.status_window.w,
 263                                                    buf));
 264                         g_free(buf);
 265
 266                         if (key == YES[0]) {
 267                                 filename_utf8 = locale_to_utf8(filename);
 268                                 error = mpdclient_cmd_delete_playlist(c, filename_utf8);
 269                                 g_free(filename_utf8);
 270
 271                                 if (error) {
 272                                         g_free(filename);
 273                                         return -1;
 274                                 }
 275
 276                                 error = playlist_save(c, filename, NULL);
 277                                 g_free(filename);
 278                                 return error;
 279                         }
 280
 281                         screen_status_printf(_("Aborted"));
 282                 }
 283
 284                 g_free(filename);
 285                 return -1;
 286         }
 287
 288         /* success */
 289         screen_status_printf(_("Saved %s"), filename);
 290         g_free(filename);
 291         return 0;
 292 }
 293
 294 #ifndef NCMPC_MINI
 295 static void add_dir(GCompletion *gcmp, gchar *dir, GList **dir_list,
 296                     GList **list, mpdclient_t *c)
 297 {
 298         g_completion_remove_items(gcmp, *list);
 299         *list = string_list_remove(*list, dir);
 300         *list = gcmp_list_from_path(c, dir, *list, GCMP_TYPE_RFILE);
 301         g_completion_add_items(gcmp, *list);
 302         *dir_list = g_list_append(*dir_list, g_strdup(dir));
 303 }
 304
 305 static void add_pre_completion_cb(GCompletion *gcmp, gchar *line, void *data)
 306 {
 307         completion_callback_data_t *tmp = (completion_callback_data_t *)data;
 308         GList **dir_list = tmp->dir_list;
 309         GList **list = tmp->list;
 310         mpdclient_t *c = tmp->c;
 311
 312         if (*list == NULL) {
 313                 /* create initial list */
 314                 *list = gcmp_list_from_path(c, "", NULL, GCMP_TYPE_RFILE);
 315                 g_completion_add_items(gcmp, *list);
 316         } else if (line && line[0] && line[strlen(line)-1]=='/' &&
 317                    string_list_find(*dir_list, line) == NULL) {
 318                 /* add directory content to list */
 319                 add_dir(gcmp, line, dir_list, list, c);
 320         }
 321 }
 322
 323 static void add_post_completion_cb(GCompletion *gcmp, gchar *line,
 324                                    GList *items, void *data)
 325 {
 326         completion_callback_data_t *tmp = (completion_callback_data_t *)data;
 327         GList **dir_list = tmp->dir_list;
 328         GList **list = tmp->list;
 329         mpdclient_t *c = tmp->c;
 330
 331         if (g_list_length(items) >= 1)
 332                 screen_display_completion_list(items);
 333
 334         if (line && line[0] && line[strlen(line) - 1] == '/' &&
 335             string_list_find(*dir_list, line) == NULL) {
 336                 /* add directory content to list */
 337                 add_dir(gcmp, line, dir_list, list, c);
 338         }
 339 }
 340 #endif
 341
 342 static int
 343 handle_add_to_playlist(mpdclient_t *c)
 344 {
 345         gchar *path;
 346 #ifndef NCMPC_MINI
 347         GCompletion *gcmp;
 348         GList *list = NULL;
 349         GList *dir_list = NULL;
 350         completion_callback_data_t data;
 351
 352         /* initialize completion support */
 353         gcmp = g_completion_new(NULL);
 354         g_completion_set_compare(gcmp, completion_strncmp);
 355         data.list = &list;
 356         data.dir_list = &dir_list;
 357         data.c = c;
 358         wrln_completion_callback_data = &data;
 359         wrln_pre_completion_callback = add_pre_completion_cb;
 360         wrln_post_completion_callback = add_post_completion_cb;
 361 #endif
 362
 363         /* get path */
 364         path = screen_readln(screen.status_window.w,
 365                              _("Add: "),
 366                              NULL,
 367                              NULL,
 368 #ifdef NCMPC_MINI
 369                              NULL
 370 #else
 371                              gcmp
 372 #endif
 373                              );
 374
 375         /* destroy completion data */
 376 #ifndef NCMPC_MINI
 377         wrln_completion_callback_data = NULL;
 378         wrln_pre_completion_callback = NULL;
 379         wrln_post_completion_callback = NULL;
 380         g_completion_free(gcmp);
 381         string_list_free(list);
 382         string_list_free(dir_list);
 383 #endif
 384
 385         /* add the path to the playlist */
 386         if (path != NULL) {
 387                 char *path_utf8 = locale_to_utf8(path);
 388                 mpdclient_cmd_add_path(c, path_utf8);
 389                 g_free(path_utf8);
 390         }
 391
 392         g_free(path);
 393         return 0;
 394 }
 395
 396 static void
 397 play_init(WINDOW *w, int cols, int rows)
 398 {
 399         lw = list_window_init(w, cols, rows);
 400 }
 401
 402 static gboolean
 403 timer_hide_cursor(gpointer data)
 404 {
 405         struct mpdclient *c = data;
 406
 407         assert(options.hide_cursor > 0);
 408         assert(timer_hide_cursor_id != 0);
 409
 410         timer_hide_cursor_id = 0;
 411
 412         /* hide the cursor when mpd is playing and the user is inactive */
 413
 414         if (c->status != NULL && c->status->state == MPD_STATUS_STATE_PLAY) {
 415                 lw->hide_cursor = true;
 416                 playlist_repaint();
 417         } else
 418                 timer_hide_cursor_id = g_timeout_add(options.hide_cursor * 1000,
 419                                                      timer_hide_cursor, c);
 420
 421         return FALSE;
 422 }
 423
 424 static void
 425 play_open(mpdclient_t *c)
 426 {
 427         static gboolean install_cb = TRUE;
 428
 429         playlist = &c->playlist;
 430
 431         assert(timer_hide_cursor_id == 0);
 432         if (options.hide_cursor > 0) {
 433                 lw->hide_cursor = false;
 434                 timer_hide_cursor_id = g_timeout_add(options.hide_cursor * 1000,
 435                                                      timer_hide_cursor, c);
 436         }
 437
 438         if (install_cb) {
 439                 mpdclient_install_playlist_callback(c, playlist_changed_callback);
 440                 install_cb = FALSE;
 441         }
 442 }
 443
 444 static void
 445 play_close(void)
 446 {
 447         if (timer_hide_cursor_id != 0) {
 448                 g_source_remove(timer_hide_cursor_id);
 449                 timer_hide_cursor_id = 0;
 450         }
 451 }
 452
 453 static void
 454 play_resize(int cols, int rows)
 455 {
 456         lw->cols = cols;
 457         lw->rows = rows;
 458 }
 459
 460
 461 static void
 462 play_exit(void)
 463 {
 464         list_window_free(lw);
 465 }
 466
 467 static const char *
 468 play_title(char *str, size_t size)
 469 {
 470         if( strcmp(options.host, "localhost") == 0 )
 471                 return _("Playlist");
 472
 473         g_snprintf(str, size, _("Playlist on %s"), options.host);
 474         return str;
 475 }
 476
 477 static void
 478 play_paint(void)
 479 {
 480         list_window_paint(lw, list_callback, NULL);
 481 }
 482
 483 static void
 484 play_update(mpdclient_t *c)
 485 {
 486         static int prev_song_id = -1;
 487
 488         current_song_id = c->song != NULL && c->status != NULL &&
 489                 !IS_STOPPED(c->status->state) ? c->song->id : -1;
 490
 491         if (current_song_id != prev_song_id) {
 492                 prev_song_id = current_song_id;
 493
 494                 /* center the cursor */
 495                 if (options.auto_center && current_song_id != -1)
 496                         center_playing_item(c);
 497
 498                 playlist_repaint();
 499 #ifndef NCMPC_MINI
 500         } else if (options.scroll) {
 501                 /* always repaint if horizontal scrolling is
 502                    enabled */
 503                 playlist_repaint();
 504 #endif
 505         }
 506 }
 507
 508 #ifdef HAVE_GETMOUSE
 509 static bool
 510 handle_mouse_event(struct mpdclient *c)
 511 {
 512         int row;
 513         unsigned selected;
 514         unsigned long bstate;
 515
 516         if (screen_get_mouse_event(c, &bstate, &row) ||
 517             list_window_mouse(lw, playlist_length(playlist), bstate, row)) {
 518                 playlist_repaint();
 519                 return true;
 520         }
 521
 522         if (bstate & BUTTON1_DOUBLE_CLICKED) {
 523                 /* stop */
 524                 screen_cmd(c, CMD_STOP);
 525                 return true;
 526         }
 527
 528         selected = lw->start + row;
 529
 530         if (bstate & BUTTON1_CLICKED) {
 531                 /* play */
 532                 if (lw->start + row < playlist_length(playlist))
 533                         mpdclient_cmd_play(c, lw->start + row);
 534         } else if (bstate & BUTTON3_CLICKED) {
 535                 /* delete */
 536                 if (selected == lw->selected)
 537                         mpdclient_cmd_delete(c, lw->selected);
 538         }
 539
 540         lw->selected = selected;
 541         list_window_check_selected(lw, playlist_length(playlist));
 542         playlist_repaint();
 543
 544         return true;
 545 }
 546 #endif
 547
 548 static bool
 549 play_cmd(mpdclient_t *c, command_t cmd)
 550 {
 551         lw->hide_cursor = false;
 552
 553         if (options.hide_cursor > 0) {
 554                 if (timer_hide_cursor_id != 0)
 555                         g_source_remove(timer_hide_cursor_id);
 556                 timer_hide_cursor_id = g_timeout_add(options.hide_cursor * 1000,
 557                                                      timer_hide_cursor, c);
 558         }
 559
 560         if (list_window_cmd(lw, playlist_length(&c->playlist), cmd)) {
 561                 playlist_repaint();
 562                 return true;
 563         }
 564
 565         switch(cmd) {
 566         case CMD_PLAY:
 567                 mpdclient_cmd_play(c, lw->selected);
 568                 return true;
 569         case CMD_DELETE:
 570                 mpdclient_cmd_delete(c, lw->selected);
 571                 return true;
 572         case CMD_SAVE_PLAYLIST:
 573                 playlist_save(c, NULL, NULL);
 574                 return true;
 575         case CMD_ADD:
 576                 handle_add_to_playlist(c);
 577                 return true;
 578         case CMD_SCREEN_UPDATE:
 579                 center_playing_item(c);
 580                 playlist_repaint();
 581                 return false;
 582
 583         case CMD_LIST_MOVE_UP:
 584                 mpdclient_cmd_move(c, lw->selected, lw->selected-1);
 585                 return true;
 586         case CMD_LIST_MOVE_DOWN:
 587                 mpdclient_cmd_move(c, lw->selected, lw->selected+1);
 588                 return true;
 589         case CMD_LIST_FIND:
 590         case CMD_LIST_RFIND:
 591         case CMD_LIST_FIND_NEXT:
 592         case CMD_LIST_RFIND_NEXT:
 593                 screen_find(lw, playlist_length(&c->playlist),
 594                             cmd, list_callback, NULL);
 595                 playlist_repaint();
 596                 return true;
 597
 598 #ifdef HAVE_GETMOUSE
 599         case CMD_MOUSE_EVENT:
 600                 return handle_mouse_event(c);
 601 #endif
 602
 603 #ifdef ENABLE_SONG_SCREEN
 604         case CMD_VIEW:
 605                 if (lw->selected < playlist_length(&c->playlist)) {
 606                         screen_song_switch(c, playlist_get(&c->playlist, lw->selected));
 607                         return true;
 608                 }
 609
 610                 break;
 611 #endif
 612
 613         case CMD_LOCATE:
 614                 if (lw->selected < playlist_length(&c->playlist)) {
 615                         screen_file_goto_song(c, playlist_get(&c->playlist, lw->selected));
 616                         return true;
 617                 }
 618
 619                 break;
 620
 621 #ifdef ENABLE_LYRICS_SCREEN
 622         case CMD_SCREEN_LYRICS:
 623                 if (lw->selected < playlist_length(&c->playlist)) {
 624                         screen_lyrics_switch(c, playlist_get(&c->playlist, lw->selected));
 625                         return true;
 626                 }
 627
 628                 break;
 629 #endif
 630
 631         default:
 632                 break;
 633         }
 634
 635         return false;
 636 }
 637
 638 const struct screen_functions screen_playlist = {
 639         .init = play_init,
 640         .exit = play_exit,
 641         .open = play_open,
 642         .close = play_close,
 643         .resize = play_resize,
 644         .paint = play_paint,
 645         .update = play_update,
 646         .cmd = play_cmd,
 647         .get_title = play_title,
 648 };