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