src/screen_play.c

   1 /*
   2  * $Id$
   3  *
   4  * (c) 2004 by Kalle Wallin <kaw@linux.se>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  18  *
  19  */
  20
  21 #include "config.h"
  22 #include "ncmpc.h"
  23 #include "options.h"
  24 #include "support.h"
  25 #include "mpdclient.h"
  26 #include "utils.h"
  27 #include "strfsong.h"
  28 #include "wreadln.h"
  29 #include "command.h"
  30 #include "colors.h"
  31 #include "screen.h"
  32 #include "screen_utils.h"
  33 #include "screen_play.h"
  34 #include "gcc.h"
  35
  36 #include <ctype.h>
  37 #include <stdlib.h>
  38 #include <string.h>
  39 #include <time.h>
  40 #include <glib.h>
  41 #include <ncurses.h>
  42
  43 #define MAX_SONG_LENGTH 512
  44
  45 typedef struct
  46 {
  47   GList **list;
  48   GList **dir_list;
  49   screen_t *screen;
  50   mpdclient_t *c;
  51 } completion_callback_data_t;
  52
  53 static list_window_t *lw = NULL;
  54 static long long playlist_id;
  55
  56 static void
  57 playlist_changed_callback(mpdclient_t *c, int event, gpointer data)
  58 {
  59         D("screen_play.c> playlist_callback() [%d]\n", event);
  60         switch(event) {
  61         case PLAYLIST_EVENT_DELETE:
  62                 break;
  63         case PLAYLIST_EVENT_MOVE:
  64                 lw->selected = *((int *) data);
  65                 if( lw->selected<lw->start )
  66                         lw->start--;
  67                 break;
  68         default:
  69                 break;
  70         }
  71         /* make shure the playlist is repainted */
  72         lw->clear = 1;
  73         lw->repaint = 1;
  74         list_window_check_selected(lw, c->playlist.list->len);
  75 }
  76
  77 static const char *
  78 list_callback(unsigned idx, int *highlight, void *data)
  79 {
  80         static char songname[MAX_SONG_LENGTH];
  81         mpdclient_t *c = (mpdclient_t *) data;
  82         mpd_Song *song;
  83
  84         if (idx >= playlist_length(&c->playlist))
  85                 return NULL;
  86
  87         song = playlist_get(&c->playlist, idx);
  88
  89         if (c->song != NULL && song->id == c->song->id &&
  90             c->status != NULL && !IS_STOPPED(c->status->state))
  91                 *highlight = 1;
  92
  93         strfsong(songname, MAX_SONG_LENGTH, LIST_FORMAT, song);
  94         return songname;
  95 }
  96
  97 static void
  98 center_playing_item(mpdclient_t *c)
  99 {
 100         unsigned length = c->playlist.list->len;
 101         unsigned offset = lw->selected - lw->start;
 102         int idx;
 103
 104         if (!c->song || length < lw->rows ||
 105             c->status == NULL || IS_STOPPED(c->status->state))
 106                 return;
 107
 108         /* try to center the song that are playing */
 109         idx = playlist_get_index(c, c->song);
 110         D("Autocenter song id:%d pos:%d index:%d\n", c->song->id,c->song->pos,idx);
 111         if (idx < 0)
 112                 return;
 113
 114         list_window_center(lw, length, idx);
 115
 116         /* make sure the cursor is in the window */
 117         lw->selected = lw->start+offset;
 118         list_window_check_selected(lw, length);
 119
 120         return;
 121 }
 122
 123 static void
 124 save_pre_completion_cb(GCompletion *gcmp, mpd_unused gchar *line, void *data)
 125 {
 126         completion_callback_data_t *tmp = (completion_callback_data_t *)data;
 127         GList **list = tmp->list;
 128         mpdclient_t *c = tmp->c;
 129
 130         if( *list == NULL ) {
 131                 /* create completion list */
 132                 *list = gcmp_list_from_path(c, "", NULL, GCMP_TYPE_PLAYLIST);
 133                 g_completion_add_items(gcmp, *list);
 134         }
 135 }
 136
 137 static void
 138 save_post_completion_cb(mpd_unused GCompletion *gcmp, mpd_unused gchar *line,
 139                         GList *items, void *data)
 140 {
 141         completion_callback_data_t *tmp = (completion_callback_data_t *)data;
 142         screen_t *screen = tmp->screen;
 143
 144         if( g_list_length(items)>=1 ) {
 145                 screen_display_completion_list(screen, items);
 146                 lw->clear = 1;
 147                 lw->repaint = 1;
 148         }
 149 }
 150
 151 int
 152 playlist_save(screen_t *screen, mpdclient_t *c, char *name, char *defaultname)
 153 {
 154   gchar *filename;
 155   gint error;
 156   GCompletion *gcmp;
 157   GList *list = NULL;
 158   completion_callback_data_t data;
 159
 160   if( name==NULL )
 161     {
 162       /* initialize completion support */
 163       gcmp = g_completion_new(NULL);
 164       g_completion_set_compare(gcmp, strncmp);
 165       data.list = &list;
 166       data.dir_list = NULL;
 167       data.screen = screen;
 168       data.c = c;
 169       wrln_completion_callback_data = &data;
 170       wrln_pre_completion_callback = save_pre_completion_cb;
 171       wrln_post_completion_callback = save_post_completion_cb;
 172
 173
 174       /* query the user for a filename */
 175       filename = screen_readln(screen->status_window.w,
 176                                _("Save playlist as: "),
 177                                defaultname,
 178                                NULL,
 179                                gcmp);
 180
 181       /* destroy completion support */
 182       wrln_completion_callback_data = NULL;
 183       wrln_pre_completion_callback = NULL;
 184       wrln_post_completion_callback = NULL;
 185       g_completion_free(gcmp);
 186       list = string_list_free(list);
 187       if( filename )
 188         filename=g_strstrip(filename);
 189     }
 190   else
 191     {
 192       filename=g_strdup(name);
 193     }
 194   if( filename==NULL || filename[0]=='\0' )
 195     return -1;
 196   /* send save command to mpd */
 197   D("Saving playlist as \'%s \'...\n", filename);
 198   if( (error=mpdclient_cmd_save_playlist(c, filename)) )
 199     {
 200       gint code = GET_ACK_ERROR_CODE(error);
 201
 202       if( code == MPD_ACK_ERROR_EXIST )
 203         {
 204           char *buf;
 205           int key;
 206
 207           buf=g_strdup_printf(_("Replace %s [%s/%s] ? "), filename, YES, NO);
 208           key = tolower(screen_getch(screen->status_window.w, buf));
 209           g_free(buf);
 210           if( key == YES[0] )
 211             {
 212               if( mpdclient_cmd_delete_playlist(c, filename) )
 213                 {
 214                   g_free(filename);
 215                   return -1;
 216                 }
 217               error = playlist_save(screen, c, filename, NULL);
 218               g_free(filename);
 219               return error;
 220             }
 221           screen_status_printf(_("Aborted!"));
 222         }
 223       g_free(filename);
 224       return -1;
 225     }
 226   /* success */
 227   screen_status_printf(_("Saved %s"), filename);
 228   g_free(filename);
 229   return 0;
 230 }
 231
 232 static void add_dir(GCompletion *gcmp, gchar *dir, GList **dir_list,
 233                     GList **list, mpdclient_t *c)
 234 {
 235   g_completion_remove_items(gcmp, *list);
 236   *list = string_list_remove(*list, dir);
 237   *list = gcmp_list_from_path(c, dir, *list, GCMP_TYPE_RFILE);
 238   g_completion_add_items(gcmp, *list);
 239   *dir_list = g_list_append(*dir_list, g_strdup(dir));
 240 }
 241
 242 static void add_pre_completion_cb(GCompletion *gcmp, gchar *line, void *data)
 243 {
 244   completion_callback_data_t *tmp = (completion_callback_data_t *)data;
 245   GList **dir_list = tmp->dir_list;
 246   GList **list = tmp->list;
 247   mpdclient_t *c = tmp->c;
 248
 249   D("pre_completion()...\n");
 250   if( *list == NULL )
 251     {
 252       /* create initial list */
 253       *list = gcmp_list_from_path(c, "", NULL, GCMP_TYPE_RFILE);
 254       g_completion_add_items(gcmp, *list);
 255     }
 256   else if( line && line[0] && line[strlen(line)-1]=='/' &&
 257            string_list_find(*dir_list, line) == NULL )
 258     {
 259       /* add directory content to list */
 260       add_dir(gcmp, line, dir_list, list, c);
 261     }
 262 }
 263
 264 static void add_post_completion_cb(GCompletion *gcmp, gchar *line,
 265                                    GList *items, void *data)
 266 {
 267   completion_callback_data_t *tmp = (completion_callback_data_t *)data;
 268   GList **dir_list = tmp->dir_list;
 269   GList **list = tmp->list;
 270   mpdclient_t *c = tmp->c;
 271   screen_t *screen = tmp->screen;
 272
 273   D("post_completion()...\n");
 274   if( g_list_length(items)>=1 )
 275     {
 276       screen_display_completion_list(screen, items);
 277       lw->clear = 1;
 278       lw->repaint = 1;
 279     }
 280
 281   if( line && line[0] && line[strlen(line)-1]=='/' &&
 282       string_list_find(*dir_list, line) == NULL )
 283     {
 284       /* add directory content to list */
 285       add_dir(gcmp, line, dir_list, list, c);
 286     }
 287 }
 288
 289 static int
 290 handle_add_to_playlist(screen_t *screen, mpdclient_t *c)
 291 {
 292   gchar *path;
 293   GCompletion *gcmp;
 294   GList *list = NULL;
 295   GList *dir_list = NULL;
 296   completion_callback_data_t data;
 297
 298   /* initialize completion support */
 299   gcmp = g_completion_new(NULL);
 300   g_completion_set_compare(gcmp, strncmp);
 301   data.list = &list;
 302   data.dir_list = &dir_list;
 303   data.screen = screen;
 304   data.c = c;
 305   wrln_completion_callback_data = &data;
 306   wrln_pre_completion_callback = add_pre_completion_cb;
 307   wrln_post_completion_callback = add_post_completion_cb;
 308   /* get path */
 309   path = screen_readln(screen->status_window.w,
 310                        _("Add: "),
 311                        NULL,
 312                        NULL,
 313                        gcmp);
 314
 315   /* destroy completion data */
 316   wrln_completion_callback_data = NULL;
 317   wrln_pre_completion_callback = NULL;
 318   wrln_post_completion_callback = NULL;
 319   g_completion_free(gcmp);
 320   string_list_free(list);
 321   string_list_free(dir_list);
 322
 323   /* add the path to the playlist */
 324   if( path && path[0] )
 325     mpdclient_cmd_add_path(c, path);
 326
 327   return 0;
 328 }
 329
 330 static void
 331 play_init(WINDOW *w, int cols, int rows)
 332 {
 333         lw = list_window_init(w, cols, rows);
 334 }
 335
 336 static void
 337 play_open(mpd_unused screen_t *screen, mpdclient_t *c)
 338 {
 339         static gboolean install_cb = TRUE;
 340
 341         if (install_cb) {
 342                 mpdclient_install_playlist_callback(c, playlist_changed_callback);
 343                 install_cb = FALSE;
 344         }
 345 }
 346
 347 static void
 348 play_resize(int cols, int rows)
 349 {
 350         lw->cols = cols;
 351         lw->rows = rows;
 352 }
 353
 354
 355 static void
 356 play_exit(void)
 357 {
 358         list_window_free(lw);
 359 }
 360
 361 static const char *
 362 play_title(char *str, size_t size)
 363 {
 364         if( strcmp(options.host, "localhost") == 0 )
 365                 return _("Playlist");
 366
 367         g_snprintf(str, size, _("Playlist on %s"), options.host);
 368         return str;
 369 }
 370
 371 static void
 372 play_paint(mpd_unused screen_t *screen, mpdclient_t *c)
 373 {
 374         lw->clear = 1;
 375
 376         list_window_paint(lw, list_callback, (void *) c);
 377         wnoutrefresh(lw->w);
 378 }
 379
 380 static void
 381 play_update(screen_t *screen, mpdclient_t *c)
 382 {
 383         /* hide the cursor when mpd are playing and the user are inactive */
 384         if (options.hide_cursor > 0 &&
 385             (c->status != NULL && c->status->state == MPD_STATUS_STATE_PLAY) &&
 386             time(NULL)-screen->input_timestamp >= options.hide_cursor ) {
 387                 lw->flags |= LW_HIDE_CURSOR;
 388         } else {
 389                 lw->flags &= ~LW_HIDE_CURSOR;
 390         }
 391
 392         /* center the cursor */
 393         if( options.auto_center ) {
 394                 static int prev_song_id = 0;
 395
 396                 if( c->song && prev_song_id != c->song->id ) {
 397                         center_playing_item(c);
 398                         prev_song_id = c->song->id;
 399                 }
 400         }
 401
 402         if (c->playlist.id != playlist_id) {
 403                 if (lw->selected >= c->playlist.list->len)
 404                         lw->selected = c->playlist.list->len - 1;
 405                 if (lw->start >= c->playlist.list->len)
 406                         list_window_reset(lw);
 407
 408                 play_paint(screen, c);
 409                 playlist_id = c->playlist.id;
 410         } else if( lw->repaint || 1) {
 411                 list_window_paint(lw, list_callback, (void *) c);
 412                 wnoutrefresh(lw->w);
 413                 lw->repaint = 0;
 414         }
 415 }
 416
 417 #ifdef HAVE_GETMOUSE
 418 static int
 419 handle_mouse_event(mpd_unused screen_t *screen, mpdclient_t *c)
 420 {
 421         int row;
 422         unsigned selected;
 423         unsigned long bstate;
 424
 425         if (screen_get_mouse_event(c, &bstate, &row) ||
 426             list_window_mouse(lw, c->playlist.list->len, bstate, row))
 427                 return 1;
 428
 429         if (bstate & BUTTON1_DOUBLE_CLICKED) {
 430                 /* stop */
 431                 screen_cmd(c, CMD_STOP);
 432                 return 1;
 433         }
 434
 435         selected = lw->start + row;
 436
 437         if (bstate & BUTTON1_CLICKED) {
 438                 /* play */
 439                 if (lw->start + row < c->playlist.list->len)
 440                         mpdclient_cmd_play(c, lw->start + row);
 441         } else if (bstate & BUTTON3_CLICKED) {
 442                 /* delete */
 443                 if (selected == lw->selected)
 444                         mpdclient_cmd_delete(c, lw->selected);
 445         }
 446
 447         lw->selected = selected;
 448         list_window_check_selected(lw, c->playlist.list->len);
 449
 450         return 1;
 451 }
 452 #else
 453 #define handle_mouse_event(s,c) (0)
 454 #endif
 455
 456 static int
 457 play_cmd(screen_t *screen, mpdclient_t *c, command_t cmd)
 458 {
 459         switch(cmd) {
 460         case CMD_PLAY:
 461                 mpdclient_cmd_play(c, lw->selected);
 462                 return 1;
 463         case CMD_DELETE:
 464                 mpdclient_cmd_delete(c, lw->selected);
 465                 return 1;
 466         case CMD_SAVE_PLAYLIST:
 467                 playlist_save(screen, c, NULL, NULL);
 468                 return 1;
 469         case CMD_ADD:
 470                 handle_add_to_playlist(screen, c);
 471                 return 1;
 472         case CMD_SCREEN_UPDATE:
 473                 screen->painted = 0;
 474                 lw->clear = 1;
 475                 lw->repaint = 1;
 476                 center_playing_item(c);
 477                 return 1;
 478         case CMD_LIST_MOVE_UP:
 479                 mpdclient_cmd_move(c, lw->selected, lw->selected-1);
 480                 return 1;
 481         case CMD_LIST_MOVE_DOWN:
 482                 mpdclient_cmd_move(c, lw->selected, lw->selected+1);
 483                 return 1;
 484         case CMD_LIST_FIND:
 485         case CMD_LIST_RFIND:
 486         case CMD_LIST_FIND_NEXT:
 487         case CMD_LIST_RFIND_NEXT:
 488                 return screen_find(screen,
 489                                    lw, c->playlist.list->len,
 490                                    cmd, list_callback, (void *) c);
 491         case CMD_MOUSE_EVENT:
 492                 return handle_mouse_event(screen,c);
 493         default:
 494                 break;
 495         }
 496         return list_window_cmd(lw, c->playlist.list->len, cmd);
 497 }
 498
 499 const struct screen_functions screen_playlist = {
 500         .init = play_init,
 501         .exit = play_exit,
 502         .open = play_open,
 503         .close = NULL,
 504         .resize = play_resize,
 505         .paint = play_paint,
 506         .update = play_update,
 507         .cmd = play_cmd,
 508         .get_title = play_title,
 509 };