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 list_window_t *lw = NULL;
  52 static guint timer_hide_cursor_id;
  53
  54 static void
  55 play_paint(struct mpdclient *c);
  56
  57 static void
  58 playlist_repaint(struct mpdclient *c)
  59 {
  60         play_paint(c);
  61         wrefresh(lw->w);
  62 }
  63
  64 static void
  65 playlist_repaint_if_active(struct mpdclient *c)
  66 {
  67         if (screen_is_visible(&screen_playlist))
  68                 playlist_repaint(c);
  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(c);
  88 }
  89
  90 static const char *
  91 list_callback(unsigned idx, int *highlight, void *data)
  92 {
  93         static char songname[MAX_SONG_LENGTH];
  94         mpdclient_t *c = (mpdclient_t *) data;
  95         mpd_Song *song;
  96
  97         if (idx >= playlist_length(&c->playlist))
  98                 return NULL;
  99
 100         song = playlist_get(&c->playlist, idx);
 101
 102         if (c->song != NULL && song->id == c->song->id &&
 103             c->status != NULL && !IS_STOPPED(c->status->state))
 104                 *highlight = 1;
 105
 106         strfsong(songname, MAX_SONG_LENGTH, options.list_format, song);
 107         return songname;
 108 }
 109
 110 static void
 111 center_playing_item(mpdclient_t *c)
 112 {
 113         unsigned length = c->playlist.list->len;
 114         unsigned offset = lw->selected - lw->start;
 115         int idx;
 116
 117         if (!c->song || length < lw->rows ||
 118             c->status == NULL || IS_STOPPED(c->status->state))
 119                 return;
 120
 121         /* try to center the song that are playing */
 122         idx = playlist_get_index(c, c->song);
 123         if (idx < 0)
 124                 return;
 125
 126         list_window_center(lw, length, idx);
 127
 128         /* make sure the cursor is in the window */
 129         lw->selected = lw->start+offset;
 130         list_window_check_selected(lw, length);
 131 }
 132
 133 static void
 134 save_pre_completion_cb(GCompletion *gcmp, mpd_unused gchar *line, void *data)
 135 {
 136         completion_callback_data_t *tmp = (completion_callback_data_t *)data;
 137         GList **list = tmp->list;
 138         mpdclient_t *c = tmp->c;
 139
 140         if( *list == NULL ) {
 141                 /* create completion list */
 142                 *list = gcmp_list_from_path(c, "", NULL, GCMP_TYPE_PLAYLIST);
 143                 g_completion_add_items(gcmp, *list);
 144         }
 145 }
 146
 147 static void
 148 save_post_completion_cb(mpd_unused GCompletion *gcmp, mpd_unused gchar *line,
 149                         GList *items, void *data)
 150 {
 151         completion_callback_data_t *tmp = (completion_callback_data_t *)data;
 152         screen_t *screen = tmp->screen;
 153
 154         if (g_list_length(items) >= 1)
 155                 screen_display_completion_list(screen, items);
 156 }
 157
 158 int
 159 playlist_save(screen_t *screen, mpdclient_t *c, char *name, char *defaultname)
 160 {
 161         gchar *filename;
 162         gint error;
 163         GCompletion *gcmp;
 164         GList *list = NULL;
 165         completion_callback_data_t data;
 166
 167         if (name == NULL) {
 168                 /* initialize completion support */
 169                 gcmp = g_completion_new(NULL);
 170                 g_completion_set_compare(gcmp, strncmp);
 171                 data.list = &list;
 172                 data.dir_list = NULL;
 173                 data.screen = screen;
 174                 data.c = c;
 175                 wrln_completion_callback_data = &data;
 176                 wrln_pre_completion_callback = save_pre_completion_cb;
 177                 wrln_post_completion_callback = save_post_completion_cb;
 178
 179
 180                 /* query the user for a filename */
 181                 filename = screen_readln(screen->status_window.w,
 182                                          _("Save playlist as: "),
 183                                          defaultname,
 184                                          NULL,
 185                                          gcmp);
 186
 187                 /* destroy completion support */
 188                 wrln_completion_callback_data = NULL;
 189                 wrln_pre_completion_callback = NULL;
 190                 wrln_post_completion_callback = NULL;
 191                 g_completion_free(gcmp);
 192                 list = string_list_free(list);
 193                 if( filename )
 194                         filename=g_strstrip(filename);
 195         } else
 196                         filename=g_strdup(name);
 197
 198         if (filename == NULL || filename[0] == '\0')
 199                 return -1;
 200
 201         /* send save command to mpd */
 202         if ((error = mpdclient_cmd_save_playlist(c, filename))) {
 203                 gint code = GET_ACK_ERROR_CODE(error);
 204
 205                 if (code == MPD_ACK_ERROR_EXIST) {
 206                         char *buf;
 207                         int key;
 208
 209                         buf = g_strdup_printf(_("Replace %s [%s/%s] ? "),
 210                                               filename, YES, NO);
 211                         key = tolower(screen_getch(screen->status_window.w,
 212                                                    buf));
 213                         g_free(buf);
 214
 215                         if (key == YES[0]) {
 216                                 if (mpdclient_cmd_delete_playlist(c, filename)) {
 217                                         g_free(filename);
 218                                         return -1;
 219                                 }
 220
 221                                 error = playlist_save(screen, c, filename, NULL);
 222                                 g_free(filename);
 223                                 return error;
 224                         }
 225
 226                         screen_status_printf(_("Aborted!"));
 227                 }
 228
 229                 g_free(filename);
 230                 return -1;
 231         }
 232
 233         /* success */
 234         screen_status_printf(_("Saved %s"), filename);
 235         g_free(filename);
 236         return 0;
 237 }
 238
 239 static void add_dir(GCompletion *gcmp, gchar *dir, GList **dir_list,
 240                     GList **list, mpdclient_t *c)
 241 {
 242         g_completion_remove_items(gcmp, *list);
 243         *list = string_list_remove(*list, dir);
 244         *list = gcmp_list_from_path(c, dir, *list, GCMP_TYPE_RFILE);
 245         g_completion_add_items(gcmp, *list);
 246         *dir_list = g_list_append(*dir_list, g_strdup(dir));
 247 }
 248
 249 static void add_pre_completion_cb(GCompletion *gcmp, gchar *line, void *data)
 250 {
 251         completion_callback_data_t *tmp = (completion_callback_data_t *)data;
 252         GList **dir_list = tmp->dir_list;
 253         GList **list = tmp->list;
 254         mpdclient_t *c = tmp->c;
 255
 256         if (*list == NULL) {
 257                 /* create initial list */
 258                 *list = gcmp_list_from_path(c, "", NULL, GCMP_TYPE_RFILE);
 259                 g_completion_add_items(gcmp, *list);
 260         } else if (line && line[0] && line[strlen(line)-1]=='/' &&
 261                    string_list_find(*dir_list, line) == NULL) {
 262                 /* add directory content to list */
 263                 add_dir(gcmp, line, dir_list, list, c);
 264         }
 265 }
 266
 267 static void add_post_completion_cb(GCompletion *gcmp, gchar *line,
 268                                    GList *items, void *data)
 269 {
 270         completion_callback_data_t *tmp = (completion_callback_data_t *)data;
 271         GList **dir_list = tmp->dir_list;
 272         GList **list = tmp->list;
 273         mpdclient_t *c = tmp->c;
 274         screen_t *screen = tmp->screen;
 275
 276         if (g_list_length(items) >= 1)
 277                 screen_display_completion_list(screen, items);
 278
 279         if (line && line[0] && line[strlen(line) - 1] == '/' &&
 280             string_list_find(*dir_list, line) == NULL) {
 281                 /* add directory content to list */
 282                 add_dir(gcmp, line, dir_list, list, c);
 283         }
 284 }
 285
 286 static int
 287 handle_add_to_playlist(screen_t *screen, mpdclient_t *c)
 288 {
 289         gchar *path;
 290         GCompletion *gcmp;
 291         GList *list = NULL;
 292         GList *dir_list = NULL;
 293         completion_callback_data_t data;
 294
 295         /* initialize completion support */
 296         gcmp = g_completion_new(NULL);
 297         g_completion_set_compare(gcmp, strncmp);
 298         data.list = &list;
 299         data.dir_list = &dir_list;
 300         data.screen = screen;
 301         data.c = c;
 302         wrln_completion_callback_data = &data;
 303         wrln_pre_completion_callback = add_pre_completion_cb;
 304         wrln_post_completion_callback = add_post_completion_cb;
 305
 306         /* get path */
 307         path = screen_readln(screen->status_window.w,
 308                              _("Add: "),
 309                              NULL,
 310                              NULL,
 311                              gcmp);
 312
 313         /* destroy completion data */
 314         wrln_completion_callback_data = NULL;
 315         wrln_pre_completion_callback = NULL;
 316         wrln_post_completion_callback = NULL;
 317         g_completion_free(gcmp);
 318         string_list_free(list);
 319         string_list_free(dir_list);
 320
 321         /* add the path to the playlist */
 322         if (path && path[0])
 323                 mpdclient_cmd_add_path(c, path);
 324
 325         return 0;
 326 }
 327
 328 static void
 329 play_init(WINDOW *w, int cols, int rows)
 330 {
 331         lw = list_window_init(w, cols, rows);
 332 }
 333
 334 static gboolean
 335 timer_hide_cursor(gpointer data)
 336 {
 337         struct mpdclient *c = data;
 338
 339         assert(options.hide_cursor > 0);
 340         assert(timer_hide_cursor_id != 0);
 341
 342         timer_hide_cursor_id = 0;
 343
 344         /* hide the cursor when mpd is playing and the user is inactive */
 345
 346         if (c->status != NULL && c->status->state == MPD_STATUS_STATE_PLAY) {
 347                 lw->flags |= LW_HIDE_CURSOR;
 348                 playlist_repaint(c);
 349         } else
 350                 timer_hide_cursor_id = g_timeout_add(options.hide_cursor * 1000,
 351                                                      timer_hide_cursor, c);
 352
 353         return FALSE;
 354 }
 355
 356 static void
 357 play_open(mpd_unused screen_t *screen, mpdclient_t *c)
 358 {
 359         static gboolean install_cb = TRUE;
 360
 361         assert(timer_hide_cursor_id == 0);
 362         if (options.hide_cursor > 0) {
 363                 lw->flags &= ~LW_HIDE_CURSOR;
 364                 timer_hide_cursor_id = g_timeout_add(options.hide_cursor * 1000,
 365                                                      timer_hide_cursor, c);
 366         }
 367
 368         if (install_cb) {
 369                 mpdclient_install_playlist_callback(c, playlist_changed_callback);
 370                 install_cb = FALSE;
 371         }
 372 }
 373
 374 static void
 375 play_close(void)
 376 {
 377         if (timer_hide_cursor_id != 0) {
 378                 g_source_remove(timer_hide_cursor_id);
 379                 timer_hide_cursor_id = 0;
 380         }
 381 }
 382
 383 static void
 384 play_resize(int cols, int rows)
 385 {
 386         lw->cols = cols;
 387         lw->rows = rows;
 388 }
 389
 390
 391 static void
 392 play_exit(void)
 393 {
 394         list_window_free(lw);
 395 }
 396
 397 static const char *
 398 play_title(char *str, size_t size)
 399 {
 400         if( strcmp(options.host, "localhost") == 0 )
 401                 return _("Playlist");
 402
 403         g_snprintf(str, size, _("Playlist on %s"), options.host);
 404         return str;
 405 }
 406
 407 static void
 408 play_paint(mpdclient_t *c)
 409 {
 410         list_window_paint(lw, list_callback, (void *) c);
 411 }
 412
 413 static void
 414 play_update(mpdclient_t *c)
 415 {
 416         static int prev_song_id = -1;
 417         int current_song_id = c->song != NULL && c->status != NULL &&
 418                 !IS_STOPPED(c->status->state) ? c->song->id : -1;
 419
 420         if (current_song_id != prev_song_id) {
 421                 prev_song_id = current_song_id;
 422
 423                 /* center the cursor */
 424                 if (options.auto_center && current_song_id != -1)
 425                         center_playing_item(c);
 426
 427                 playlist_repaint(c);
 428         }
 429 }
 430
 431 #ifdef HAVE_GETMOUSE
 432 static int
 433 handle_mouse_event(mpd_unused screen_t *screen, mpdclient_t *c)
 434 {
 435         int row;
 436         unsigned selected;
 437         unsigned long bstate;
 438
 439         if (screen_get_mouse_event(c, &bstate, &row) ||
 440             list_window_mouse(lw, c->playlist.list->len, bstate, row)) {
 441                 playlist_repaint(c);
 442                 return 1;
 443         }
 444
 445         if (bstate & BUTTON1_DOUBLE_CLICKED) {
 446                 /* stop */
 447                 screen_cmd(c, CMD_STOP);
 448                 return 1;
 449         }
 450
 451         selected = lw->start + row;
 452
 453         if (bstate & BUTTON1_CLICKED) {
 454                 /* play */
 455                 if (lw->start + row < c->playlist.list->len)
 456                         mpdclient_cmd_play(c, lw->start + row);
 457         } else if (bstate & BUTTON3_CLICKED) {
 458                 /* delete */
 459                 if (selected == lw->selected)
 460                         mpdclient_cmd_delete(c, lw->selected);
 461         }
 462
 463         lw->selected = selected;
 464         list_window_check_selected(lw, c->playlist.list->len);
 465         playlist_repaint(c);
 466
 467         return 1;
 468 }
 469 #else
 470 #define handle_mouse_event(s,c) (0)
 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(c);
 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(c);
 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, c);
 521                 playlist_repaint(c);
 522                 return 1;
 523
 524         case CMD_MOUSE_EVENT:
 525                 return handle_mouse_event(screen,c);
 526
 527 #ifdef ENABLE_LYRICS_SCREEN
 528         case CMD_SCREEN_LYRICS:
 529                 if (lw->selected < playlist_length(&c->playlist)) {
 530                         screen_lyrics_switch(c, playlist_get(&c->playlist, lw->selected));
 531                         return 1;
 532                 }
 533
 534                 break;
 535 #endif
 536
 537         default:
 538                 break;
 539         }
 540
 541         return 0;
 542 }
 543
 544 const struct screen_functions screen_playlist = {
 545         .init = play_init,
 546         .exit = play_exit,
 547         .open = play_open,
 548         .close = play_close,
 549         .resize = play_resize,
 550         .paint = play_paint,
 551         .update = play_update,
 552         .cmd = play_cmd,
 553         .get_title = play_title,
 554 };