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