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 "ncmpc.h"
  21 #include "i18n.h"
  22 #include "options.h"
  23 #include "support.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 #include "gcc.h"
  34
  35 #include <ctype.h>
  36 #include <stdlib.h>
  37 #include <string.h>
  38 #include <time.h>
  39 #include <glib.h>
  40 #include <ncurses.h>
  41
  42 #define MAX_SONG_LENGTH 512
  43
  44 typedef struct
  45 {
  46         GList **list;
  47         GList **dir_list;
  48         screen_t *screen;
  49         mpdclient_t *c;
  50 } completion_callback_data_t;
  51
  52 static list_window_t *lw = NULL;
  53 static guint timer_hide_cursor_id;
  54
  55 static void
  56 play_paint(struct mpdclient *c);
  57
  58 static void
  59 playlist_repaint(struct mpdclient *c)
  60 {
  61         play_paint(c);
  62         wrefresh(lw->w);
  63 }
  64
  65 static void
  66 playlist_repaint_if_active(struct mpdclient *c)
  67 {
  68         if (screen_is_visible(&screen_playlist))
  69                 playlist_repaint(c);
  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(c);
  89 }
  90
  91 static const char *
  92 list_callback(unsigned idx, int *highlight, void *data)
  93 {
  94         static char songname[MAX_SONG_LENGTH];
  95         mpdclient_t *c = (mpdclient_t *) data;
  96         mpd_Song *song;
  97
  98         if (idx >= playlist_length(&c->playlist))
  99                 return NULL;
 100
 101         song = playlist_get(&c->playlist, idx);
 102
 103         if (c->song != NULL && song->id == c->song->id &&
 104             c->status != NULL && !IS_STOPPED(c->status->state))
 105                 *highlight = 1;
 106
 107         strfsong(songname, MAX_SONG_LENGTH, LIST_FORMAT, song);
 108         return songname;
 109 }
 110
 111 static void
 112 center_playing_item(mpdclient_t *c)
 113 {
 114         unsigned length = c->playlist.list->len;
 115         unsigned offset = lw->selected - lw->start;
 116         int idx;
 117
 118         if (!c->song || length < lw->rows ||
 119             c->status == NULL || IS_STOPPED(c->status->state))
 120                 return;
 121
 122         /* try to center the song that are playing */
 123         idx = playlist_get_index(c, c->song);
 124         if (idx < 0)
 125                 return;
 126
 127         list_window_center(lw, length, idx);
 128
 129         /* make sure the cursor is in the window */
 130         lw->selected = lw->start+offset;
 131         list_window_check_selected(lw, length);
 132 }
 133
 134 static void
 135 save_pre_completion_cb(GCompletion *gcmp, mpd_unused gchar *line, void *data)
 136 {
 137         completion_callback_data_t *tmp = (completion_callback_data_t *)data;
 138         GList **list = tmp->list;
 139         mpdclient_t *c = tmp->c;
 140
 141         if( *list == NULL ) {
 142                 /* create completion list */
 143                 *list = gcmp_list_from_path(c, "", NULL, GCMP_TYPE_PLAYLIST);
 144                 g_completion_add_items(gcmp, *list);
 145         }
 146 }
 147
 148 static void
 149 save_post_completion_cb(mpd_unused GCompletion *gcmp, mpd_unused gchar *line,
 150                         GList *items, void *data)
 151 {
 152         completion_callback_data_t *tmp = (completion_callback_data_t *)data;
 153         screen_t *screen = tmp->screen;
 154
 155         if (g_list_length(items) >= 1)
 156                 screen_display_completion_list(screen, items);
 157 }
 158
 159 int
 160 playlist_save(screen_t *screen, mpdclient_t *c, char *name, char *defaultname)
 161 {
 162         gchar *filename;
 163         gint error;
 164         GCompletion *gcmp;
 165         GList *list = NULL;
 166         completion_callback_data_t data;
 167
 168         if (name == NULL) {
 169                 /* initialize completion support */
 170                 gcmp = g_completion_new(NULL);
 171                 g_completion_set_compare(gcmp, strncmp);
 172                 data.list = &list;
 173                 data.dir_list = NULL;
 174                 data.screen = screen;
 175                 data.c = c;
 176                 wrln_completion_callback_data = &data;
 177                 wrln_pre_completion_callback = save_pre_completion_cb;
 178                 wrln_post_completion_callback = save_post_completion_cb;
 179
 180
 181                 /* query the user for a filename */
 182                 filename = screen_readln(screen->status_window.w,
 183                                          _("Save playlist as: "),
 184                                          defaultname,
 185                                          NULL,
 186                                          gcmp);
 187
 188                 /* destroy completion support */
 189                 wrln_completion_callback_data = NULL;
 190                 wrln_pre_completion_callback = NULL;
 191                 wrln_post_completion_callback = NULL;
 192                 g_completion_free(gcmp);
 193                 list = string_list_free(list);
 194                 if( filename )
 195                         filename=g_strstrip(filename);
 196         } else
 197                         filename=g_strdup(name);
 198
 199         if (filename == NULL || filename[0] == '\0')
 200                 return -1;
 201
 202         /* send save command to mpd */
 203         if ((error = mpdclient_cmd_save_playlist(c, filename))) {
 204                 gint code = GET_ACK_ERROR_CODE(error);
 205
 206                 if (code == MPD_ACK_ERROR_EXIST) {
 207                         char *buf;
 208                         int key;
 209
 210                         buf = g_strdup_printf(_("Replace %s [%s/%s] ? "),
 211                                               filename, YES, NO);
 212                         key = tolower(screen_getch(screen->status_window.w,
 213                                                    buf));
 214                         g_free(buf);
 215
 216                         if (key == YES[0]) {
 217                                 if (mpdclient_cmd_delete_playlist(c, filename)) {
 218                                         g_free(filename);
 219                                         return -1;
 220                                 }
 221
 222                                 error = playlist_save(screen, c, filename, NULL);
 223                                 g_free(filename);
 224                                 return error;
 225                         }
 226
 227                         screen_status_printf(_("Aborted!"));
 228                 }
 229
 230                 g_free(filename);
 231                 return -1;
 232         }
 233
 234         /* success */
 235         screen_status_printf(_("Saved %s"), filename);
 236         g_free(filename);
 237         return 0;
 238 }
 239
 240 static void add_dir(GCompletion *gcmp, gchar *dir, GList **dir_list,
 241                     GList **list, mpdclient_t *c)
 242 {
 243         g_completion_remove_items(gcmp, *list);
 244         *list = string_list_remove(*list, dir);
 245         *list = gcmp_list_from_path(c, dir, *list, GCMP_TYPE_RFILE);
 246         g_completion_add_items(gcmp, *list);
 247         *dir_list = g_list_append(*dir_list, g_strdup(dir));
 248 }
 249
 250 static void add_pre_completion_cb(GCompletion *gcmp, gchar *line, void *data)
 251 {
 252         completion_callback_data_t *tmp = (completion_callback_data_t *)data;
 253         GList **dir_list = tmp->dir_list;
 254         GList **list = tmp->list;
 255         mpdclient_t *c = tmp->c;
 256
 257         if (*list == NULL) {
 258                 /* create initial list */
 259                 *list = gcmp_list_from_path(c, "", NULL, GCMP_TYPE_RFILE);
 260                 g_completion_add_items(gcmp, *list);
 261         } else if (line && line[0] && line[strlen(line)-1]=='/' &&
 262                    string_list_find(*dir_list, line) == NULL) {
 263                 /* add directory content to list */
 264                 add_dir(gcmp, line, dir_list, list, c);
 265         }
 266 }
 267
 268 static void add_post_completion_cb(GCompletion *gcmp, gchar *line,
 269                                    GList *items, void *data)
 270 {
 271         completion_callback_data_t *tmp = (completion_callback_data_t *)data;
 272         GList **dir_list = tmp->dir_list;
 273         GList **list = tmp->list;
 274         mpdclient_t *c = tmp->c;
 275         screen_t *screen = tmp->screen;
 276
 277         if (g_list_length(items) >= 1)
 278                 screen_display_completion_list(screen, items);
 279
 280         if (line && line[0] && line[strlen(line) - 1] == '/' &&
 281             string_list_find(*dir_list, line) == NULL) {
 282                 /* add directory content to list */
 283                 add_dir(gcmp, line, dir_list, list, c);
 284         }
 285 }
 286
 287 static int
 288 handle_add_to_playlist(screen_t *screen, mpdclient_t *c)
 289 {
 290         gchar *path;
 291         GCompletion *gcmp;
 292         GList *list = NULL;
 293         GList *dir_list = NULL;
 294         completion_callback_data_t data;
 295
 296         /* initialize completion support */
 297         gcmp = g_completion_new(NULL);
 298         g_completion_set_compare(gcmp, strncmp);
 299         data.list = &list;
 300         data.dir_list = &dir_list;
 301         data.screen = screen;
 302         data.c = c;
 303         wrln_completion_callback_data = &data;
 304         wrln_pre_completion_callback = add_pre_completion_cb;
 305         wrln_post_completion_callback = add_post_completion_cb;
 306
 307         /* get path */
 308         path = screen_readln(screen->status_window.w,
 309                              _("Add: "),
 310                              NULL,
 311                              NULL,
 312                              gcmp);
 313
 314         /* destroy completion data */
 315         wrln_completion_callback_data = NULL;
 316         wrln_pre_completion_callback = NULL;
 317         wrln_post_completion_callback = NULL;
 318         g_completion_free(gcmp);
 319         string_list_free(list);
 320         string_list_free(dir_list);
 321
 322         /* add the path to the playlist */
 323         if (path && path[0])
 324                 mpdclient_cmd_add_path(c, path);
 325
 326         return 0;
 327 }
 328
 329 static void
 330 play_init(WINDOW *w, int cols, int rows)
 331 {
 332         lw = list_window_init(w, cols, rows);
 333 }
 334
 335 static gboolean
 336 timer_hide_cursor(gpointer data)
 337 {
 338         struct mpdclient *c = data;
 339
 340         assert(options.hide_cursor > 0);
 341         assert(timer_hide_cursor_id != 0);
 342
 343         timer_hide_cursor_id = 0;
 344
 345         /* hide the cursor when mpd is playing and the user is inactive */
 346
 347         if (c->status != NULL && c->status->state == MPD_STATUS_STATE_PLAY) {
 348                 lw->flags |= LW_HIDE_CURSOR;
 349                 playlist_repaint(c);
 350         } else
 351                 timer_hide_cursor_id = g_timeout_add(options.hide_cursor * 1000,
 352                                                      timer_hide_cursor, c);
 353
 354         return FALSE;
 355 }
 356
 357 static void
 358 play_open(mpd_unused screen_t *screen, mpdclient_t *c)
 359 {
 360         static gboolean install_cb = TRUE;
 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(mpdclient_t *c)
 410 {
 411         list_window_paint(lw, list_callback, (void *) c);
 412 }
 413
 414 static void
 415 play_update(mpdclient_t *c)
 416 {
 417         static int prev_song_id = -1;
 418         int current_song_id = c->song != NULL && c->status != NULL &&
 419                 !IS_STOPPED(c->status->state) ? c->song->id : -1;
 420
 421         if (current_song_id != prev_song_id) {
 422                 prev_song_id = current_song_id;
 423
 424                 /* center the cursor */
 425                 if (options.auto_center && current_song_id != -1)
 426                         center_playing_item(c);
 427
 428                 playlist_repaint(c);
 429         }
 430 }
 431
 432 #ifdef HAVE_GETMOUSE
 433 static int
 434 handle_mouse_event(mpd_unused screen_t *screen, mpdclient_t *c)
 435 {
 436         int row;
 437         unsigned selected;
 438         unsigned long bstate;
 439
 440         if (screen_get_mouse_event(c, &bstate, &row) ||
 441             list_window_mouse(lw, c->playlist.list->len, bstate, row)) {
 442                 playlist_repaint(c);
 443                 return 1;
 444         }
 445
 446         if (bstate & BUTTON1_DOUBLE_CLICKED) {
 447                 /* stop */
 448                 screen_cmd(c, CMD_STOP);
 449                 return 1;
 450         }
 451
 452         selected = lw->start + row;
 453
 454         if (bstate & BUTTON1_CLICKED) {
 455                 /* play */
 456                 if (lw->start + row < c->playlist.list->len)
 457                         mpdclient_cmd_play(c, lw->start + row);
 458         } else if (bstate & BUTTON3_CLICKED) {
 459                 /* delete */
 460                 if (selected == lw->selected)
 461                         mpdclient_cmd_delete(c, lw->selected);
 462         }
 463
 464         lw->selected = selected;
 465         list_window_check_selected(lw, c->playlist.list->len);
 466         playlist_repaint(c);
 467
 468         return 1;
 469 }
 470 #else
 471 #define handle_mouse_event(s,c) (0)
 472 #endif
 473
 474 static int
 475 play_cmd(screen_t *screen, mpdclient_t *c, command_t cmd)
 476 {
 477         lw->flags &= ~LW_HIDE_CURSOR;
 478
 479         if (options.hide_cursor > 0) {
 480                 if (timer_hide_cursor_id != 0)
 481                         g_source_remove(timer_hide_cursor_id);
 482                 timer_hide_cursor_id = g_timeout_add(options.hide_cursor * 1000,
 483                                                      timer_hide_cursor, c);
 484         }
 485
 486         if (list_window_cmd(lw, playlist_length(&c->playlist), cmd)) {
 487                 playlist_repaint(c);
 488                 return 1;
 489         }
 490
 491         switch(cmd) {
 492         case CMD_PLAY:
 493                 mpdclient_cmd_play(c, lw->selected);
 494                 return 1;
 495         case CMD_DELETE:
 496                 mpdclient_cmd_delete(c, lw->selected);
 497                 return 1;
 498         case CMD_SAVE_PLAYLIST:
 499                 playlist_save(screen, c, NULL, NULL);
 500                 return 1;
 501         case CMD_ADD:
 502                 handle_add_to_playlist(screen, c);
 503                 return 1;
 504         case CMD_SCREEN_UPDATE:
 505                 center_playing_item(c);
 506                 playlist_repaint(c);
 507                 return 0;
 508
 509         case CMD_LIST_MOVE_UP:
 510                 mpdclient_cmd_move(c, lw->selected, lw->selected-1);
 511                 return 1;
 512         case CMD_LIST_MOVE_DOWN:
 513                 mpdclient_cmd_move(c, lw->selected, lw->selected+1);
 514                 return 1;
 515         case CMD_LIST_FIND:
 516         case CMD_LIST_RFIND:
 517         case CMD_LIST_FIND_NEXT:
 518         case CMD_LIST_RFIND_NEXT:
 519                 screen_find(screen,
 520                             lw, playlist_length(&c->playlist),
 521                             cmd, list_callback, c);
 522                 playlist_repaint(c);
 523                 return 1;
 524
 525         case CMD_MOUSE_EVENT:
 526                 return handle_mouse_event(screen,c);
 527
 528 #ifdef ENABLE_LYRICS_SCREEN
 529         case CMD_SCREEN_LYRICS:
 530                 if (lw->selected < playlist_length(&c->playlist)) {
 531                         screen_lyrics_switch(c, playlist_get(&c->playlist, lw->selected));
 532                         return 1;
 533                 }
 534
 535                 break;
 536 #endif
 537
 538         default:
 539                 break;
 540         }
 541
 542         return 0;
 543 }
 544
 545 const struct screen_functions screen_playlist = {
 546         .init = play_init,
 547         .exit = play_exit,
 548         .open = play_open,
 549         .close = play_close,
 550         .resize = play_resize,
 551         .paint = play_paint,
 552         .update = play_update,
 553         .cmd = play_cmd,
 554         .get_title = play_title,
 555 };