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