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 "options.h"
  22 #include "support.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 #include "gcc.h"
  33
  34 #include <ctype.h>
  35 #include <stdlib.h>
  36 #include <string.h>
  37 #include <time.h>
  38 #include <glib.h>
  39 #include <ncurses.h>
  40
  41 #define MAX_SONG_LENGTH 512
  42
  43 typedef struct
  44 {
  45         GList **list;
  46         GList **dir_list;
  47         screen_t *screen;
  48         mpdclient_t *c;
  49 } completion_callback_data_t;
  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, int *highlight, mpd_unused void *data)
  94 {
  95         static char songname[MAX_SONG_LENGTH];
  96         mpd_Song *song;
  97
  98         if (playlist == NULL || idx >= playlist_length(playlist))
  99                 return NULL;
 100
 101         song = playlist_get(playlist, idx);
 102         if (song->id == current_song_id)
 103                 *highlight = 1;
 104
 105         strfsong(songname, MAX_SONG_LENGTH, options.list_format, song);
 106         return songname;
 107 }
 108
 109 static void
 110 center_playing_item(mpdclient_t *c)
 111 {
 112         unsigned length = c->playlist.list->len;
 113         unsigned offset = lw->selected - lw->start;
 114         int idx;
 115
 116         if (!c->song || length < lw->rows ||
 117             c->status == NULL || IS_STOPPED(c->status->state))
 118                 return;
 119
 120         /* try to center the song that are playing */
 121         idx = playlist_get_index(c, c->song);
 122         if (idx < 0)
 123                 return;
 124
 125         list_window_center(lw, length, idx);
 126
 127         /* make sure the cursor is in the window */
 128         lw->selected = lw->start+offset;
 129         list_window_check_selected(lw, length);
 130 }
 131
 132 static void
 133 save_pre_completion_cb(GCompletion *gcmp, mpd_unused gchar *line, void *data)
 134 {
 135         completion_callback_data_t *tmp = (completion_callback_data_t *)data;
 136         GList **list = tmp->list;
 137         mpdclient_t *c = tmp->c;
 138
 139         if( *list == NULL ) {
 140                 /* create completion list */
 141                 *list = gcmp_list_from_path(c, "", NULL, GCMP_TYPE_PLAYLIST);
 142                 g_completion_add_items(gcmp, *list);
 143         }
 144 }
 145
 146 static void
 147 save_post_completion_cb(mpd_unused GCompletion *gcmp, mpd_unused gchar *line,
 148                         GList *items, void *data)
 149 {
 150         completion_callback_data_t *tmp = (completion_callback_data_t *)data;
 151         screen_t *screen = tmp->screen;
 152
 153         if (g_list_length(items) >= 1)
 154                 screen_display_completion_list(screen, items);
 155 }
 156
 157 int
 158 playlist_save(screen_t *screen, mpdclient_t *c, char *name, char *defaultname)
 159 {
 160         gchar *filename;
 161         gint error;
 162         GCompletion *gcmp;
 163         GList *list = NULL;
 164         completion_callback_data_t data;
 165
 166         if (name == NULL) {
 167                 /* initialize completion support */
 168                 gcmp = g_completion_new(NULL);
 169                 g_completion_set_compare(gcmp, strncmp);
 170                 data.list = &list;
 171                 data.dir_list = NULL;
 172                 data.screen = screen;
 173                 data.c = c;
 174                 wrln_completion_callback_data = &data;
 175                 wrln_pre_completion_callback = save_pre_completion_cb;
 176                 wrln_post_completion_callback = save_post_completion_cb;
 177
 178
 179                 /* query the user for a filename */
 180                 filename = screen_readln(screen->status_window.w,
 181                                          _("Save playlist as: "),
 182                                          defaultname,
 183                                          NULL,
 184                                          gcmp);
 185
 186                 /* destroy completion support */
 187                 wrln_completion_callback_data = NULL;
 188                 wrln_pre_completion_callback = NULL;
 189                 wrln_post_completion_callback = NULL;
 190                 g_completion_free(gcmp);
 191                 list = string_list_free(list);
 192                 if( filename )
 193                         filename=g_strstrip(filename);
 194         } else
 195                         filename=g_strdup(name);
 196
 197         if (filename == NULL || filename[0] == '\0')
 198                 return -1;
 199
 200         /* send save command to mpd */
 201         if ((error = mpdclient_cmd_save_playlist(c, filename))) {
 202                 gint code = GET_ACK_ERROR_CODE(error);
 203
 204                 if (code == MPD_ACK_ERROR_EXIST) {
 205                         char *buf;
 206                         int key;
 207
 208                         buf = g_strdup_printf(_("Replace %s [%s/%s] ? "),
 209                                               filename, YES, NO);
 210                         key = tolower(screen_getch(screen->status_window.w,
 211                                                    buf));
 212                         g_free(buf);
 213
 214                         if (key == YES[0]) {
 215                                 if (mpdclient_cmd_delete_playlist(c, filename)) {
 216                                         g_free(filename);
 217                                         return -1;
 218                                 }
 219
 220                                 error = playlist_save(screen, c, filename, NULL);
 221                                 g_free(filename);
 222                                 return error;
 223                         }
 224
 225                         screen_status_printf(_("Aborted!"));
 226                 }
 227
 228                 g_free(filename);
 229                 return -1;
 230         }
 231
 232         /* success */
 233         screen_status_printf(_("Saved %s"), filename);
 234         g_free(filename);
 235         return 0;
 236 }
 237
 238 static void add_dir(GCompletion *gcmp, gchar *dir, GList **dir_list,
 239                     GList **list, mpdclient_t *c)
 240 {
 241         g_completion_remove_items(gcmp, *list);
 242         *list = string_list_remove(*list, dir);
 243         *list = gcmp_list_from_path(c, dir, *list, GCMP_TYPE_RFILE);
 244         g_completion_add_items(gcmp, *list);
 245         *dir_list = g_list_append(*dir_list, g_strdup(dir));
 246 }
 247
 248 static void add_pre_completion_cb(GCompletion *gcmp, gchar *line, void *data)
 249 {
 250         completion_callback_data_t *tmp = (completion_callback_data_t *)data;
 251         GList **dir_list = tmp->dir_list;
 252         GList **list = tmp->list;
 253         mpdclient_t *c = tmp->c;
 254
 255         if (*list == NULL) {
 256                 /* create initial list */
 257                 *list = gcmp_list_from_path(c, "", NULL, GCMP_TYPE_RFILE);
 258                 g_completion_add_items(gcmp, *list);
 259         } else if (line && line[0] && line[strlen(line)-1]=='/' &&
 260                    string_list_find(*dir_list, line) == NULL) {
 261                 /* add directory content to list */
 262                 add_dir(gcmp, line, dir_list, list, c);
 263         }
 264 }
 265
 266 static void add_post_completion_cb(GCompletion *gcmp, gchar *line,
 267                                    GList *items, void *data)
 268 {
 269         completion_callback_data_t *tmp = (completion_callback_data_t *)data;
 270         GList **dir_list = tmp->dir_list;
 271         GList **list = tmp->list;
 272         mpdclient_t *c = tmp->c;
 273         screen_t *screen = tmp->screen;
 274
 275         if (g_list_length(items) >= 1)
 276                 screen_display_completion_list(screen, items);
 277
 278         if (line && line[0] && line[strlen(line) - 1] == '/' &&
 279             string_list_find(*dir_list, line) == NULL) {
 280                 /* add directory content to list */
 281                 add_dir(gcmp, line, dir_list, list, c);
 282         }
 283 }
 284
 285 static int
 286 handle_add_to_playlist(screen_t *screen, mpdclient_t *c)
 287 {
 288         gchar *path;
 289         GCompletion *gcmp;
 290         GList *list = NULL;
 291         GList *dir_list = NULL;
 292         completion_callback_data_t data;
 293
 294         /* initialize completion support */
 295         gcmp = g_completion_new(NULL);
 296         g_completion_set_compare(gcmp, strncmp);
 297         data.list = &list;
 298         data.dir_list = &dir_list;
 299         data.screen = screen;
 300         data.c = c;
 301         wrln_completion_callback_data = &data;
 302         wrln_pre_completion_callback = add_pre_completion_cb;
 303         wrln_post_completion_callback = add_post_completion_cb;
 304
 305         /* get path */
 306         path = screen_readln(screen->status_window.w,
 307                              _("Add: "),
 308                              NULL,
 309                              NULL,
 310                              gcmp);
 311
 312         /* destroy completion data */
 313         wrln_completion_callback_data = NULL;
 314         wrln_pre_completion_callback = NULL;
 315         wrln_post_completion_callback = NULL;
 316         g_completion_free(gcmp);
 317         string_list_free(list);
 318         string_list_free(dir_list);
 319
 320         /* add the path to the playlist */
 321         if (path && path[0])
 322                 mpdclient_cmd_add_path(c, path);
 323
 324         return 0;
 325 }
 326
 327 static void
 328 play_init(WINDOW *w, int cols, int rows)
 329 {
 330         lw = list_window_init(w, cols, rows);
 331 }
 332
 333 static gboolean
 334 timer_hide_cursor(gpointer data)
 335 {
 336         struct mpdclient *c = data;
 337
 338         assert(options.hide_cursor > 0);
 339         assert(timer_hide_cursor_id != 0);
 340
 341         timer_hide_cursor_id = 0;
 342
 343         /* hide the cursor when mpd is playing and the user is inactive */
 344
 345         if (c->status != NULL && c->status->state == MPD_STATUS_STATE_PLAY) {
 346                 lw->flags |= LW_HIDE_CURSOR;
 347                 playlist_repaint();
 348         } else
 349                 timer_hide_cursor_id = g_timeout_add(options.hide_cursor * 1000,
 350                                                      timer_hide_cursor, c);
 351
 352         return FALSE;
 353 }
 354
 355 static void
 356 play_open(mpd_unused screen_t *screen, mpdclient_t *c)
 357 {
 358         static gboolean install_cb = TRUE;
 359
 360         playlist = &c->playlist;
 361
 362         assert(timer_hide_cursor_id == 0);
 363         if (options.hide_cursor > 0) {
 364                 lw->flags &= ~LW_HIDE_CURSOR;
 365                 timer_hide_cursor_id = g_timeout_add(options.hide_cursor * 1000,
 366                                                      timer_hide_cursor, c);
 367         }
 368
 369         if (install_cb) {
 370                 mpdclient_install_playlist_callback(c, playlist_changed_callback);
 371                 install_cb = FALSE;
 372         }
 373 }
 374
 375 static void
 376 play_close(void)
 377 {
 378         if (timer_hide_cursor_id != 0) {
 379                 g_source_remove(timer_hide_cursor_id);
 380                 timer_hide_cursor_id = 0;
 381         }
 382 }
 383
 384 static void
 385 play_resize(int cols, int rows)
 386 {
 387         lw->cols = cols;
 388         lw->rows = rows;
 389 }
 390
 391
 392 static void
 393 play_exit(void)
 394 {
 395         list_window_free(lw);
 396 }
 397
 398 static const char *
 399 play_title(char *str, size_t size)
 400 {
 401         if( strcmp(options.host, "localhost") == 0 )
 402                 return _("Playlist");
 403
 404         g_snprintf(str, size, _("Playlist on %s"), options.host);
 405         return str;
 406 }
 407
 408 static void
 409 play_paint(void)
 410 {
 411         list_window_paint(lw, list_callback, NULL);
 412 }
 413
 414 static void
 415 play_update(mpdclient_t *c)
 416 {
 417         static int prev_song_id = -1;
 418
 419         current_song_id = c->song != NULL && c->status != NULL &&
 420                 !IS_STOPPED(c->status->state) ? c->song->id : -1;
 421
 422         if (current_song_id != prev_song_id) {
 423                 prev_song_id = current_song_id;
 424
 425                 /* center the cursor */
 426                 if (options.auto_center && current_song_id != -1)
 427                         center_playing_item(c);
 428
 429                 playlist_repaint();
 430         }
 431 }
 432
 433 #ifdef HAVE_GETMOUSE
 434 static int
 435 handle_mouse_event(struct mpdclient *c)
 436 {
 437         int row;
 438         unsigned selected;
 439         unsigned long bstate;
 440
 441         if (screen_get_mouse_event(c, &bstate, &row) ||
 442             list_window_mouse(lw, playlist_length(playlist), bstate, row)) {
 443                 playlist_repaint();
 444                 return 1;
 445         }
 446
 447         if (bstate & BUTTON1_DOUBLE_CLICKED) {
 448                 /* stop */
 449                 screen_cmd(c, CMD_STOP);
 450                 return 1;
 451         }
 452
 453         selected = lw->start + row;
 454
 455         if (bstate & BUTTON1_CLICKED) {
 456                 /* play */
 457                 if (lw->start + row < playlist_length(playlist))
 458                         mpdclient_cmd_play(c, lw->start + row);
 459         } else if (bstate & BUTTON3_CLICKED) {
 460                 /* delete */
 461                 if (selected == lw->selected)
 462                         mpdclient_cmd_delete(c, lw->selected);
 463         }
 464
 465         lw->selected = selected;
 466         list_window_check_selected(lw, playlist_length(playlist));
 467         playlist_repaint();
 468
 469         return 1;
 470 }
 471 #endif
 472
 473 static int
 474 play_cmd(screen_t *screen, mpdclient_t *c, command_t cmd)
 475 {
 476         lw->flags &= ~LW_HIDE_CURSOR;
 477
 478         if (options.hide_cursor > 0) {
 479                 if (timer_hide_cursor_id != 0)
 480                         g_source_remove(timer_hide_cursor_id);
 481                 timer_hide_cursor_id = g_timeout_add(options.hide_cursor * 1000,
 482                                                      timer_hide_cursor, c);
 483         }
 484
 485         if (list_window_cmd(lw, playlist_length(&c->playlist), cmd)) {
 486                 playlist_repaint();
 487                 return 1;
 488         }
 489
 490         switch(cmd) {
 491         case CMD_PLAY:
 492                 mpdclient_cmd_play(c, lw->selected);
 493                 return 1;
 494         case CMD_DELETE:
 495                 mpdclient_cmd_delete(c, lw->selected);
 496                 return 1;
 497         case CMD_SAVE_PLAYLIST:
 498                 playlist_save(screen, c, NULL, NULL);
 499                 return 1;
 500         case CMD_ADD:
 501                 handle_add_to_playlist(screen, c);
 502                 return 1;
 503         case CMD_SCREEN_UPDATE:
 504                 center_playing_item(c);
 505                 playlist_repaint();
 506                 return 0;
 507
 508         case CMD_LIST_MOVE_UP:
 509                 mpdclient_cmd_move(c, lw->selected, lw->selected-1);
 510                 return 1;
 511         case CMD_LIST_MOVE_DOWN:
 512                 mpdclient_cmd_move(c, lw->selected, lw->selected+1);
 513                 return 1;
 514         case CMD_LIST_FIND:
 515         case CMD_LIST_RFIND:
 516         case CMD_LIST_FIND_NEXT:
 517         case CMD_LIST_RFIND_NEXT:
 518                 screen_find(screen,
 519                             lw, playlist_length(&c->playlist),
 520                             cmd, list_callback, NULL);
 521                 playlist_repaint();
 522                 return 1;
 523
 524 #ifdef HAVE_GETMOUSE
 525         case CMD_MOUSE_EVENT:
 526                 return handle_mouse_event(c);
 527 #endif
 528
 529 #ifdef ENABLE_LYRICS_SCREEN
 530         case CMD_SCREEN_LYRICS:
 531                 if (lw->selected < playlist_length(&c->playlist)) {
 532                         screen_lyrics_switch(c, playlist_get(&c->playlist, lw->selected));
 533                         return 1;
 534                 }
 535
 536                 break;
 537 #endif
 538
 539         default:
 540                 break;
 541         }
 542
 543         return 0;
 544 }
 545
 546 const struct screen_functions screen_playlist = {
 547         .init = play_init,
 548         .exit = play_exit,
 549         .open = play_open,
 550         .close = play_close,
 551         .resize = play_resize,
 552         .paint = play_paint,
 553         .update = play_update,
 554         .cmd = play_cmd,
 555         .get_title = play_title,
 556 };