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