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