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