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 <ctype.h>
  22 #include <stdlib.h>
  23 #include <string.h>
  24 #include <glib.h>
  25 #include <ncurses.h>
  26 #include <panel.h>
  27
  28 #include "config.h"
  29 #include "ncmpc.h"
  30 #include "options.h"
  31 #include "support.h"
  32 #include "mpdclient.h"
  33 #include "utils.h"
  34 #include "strfsong.h"
  35 #include "wreadln.h"
  36 #include "command.h"
  37 #include "colors.h"
  38 #include "screen.h"
  39 #include "screen_utils.h"
  40
  41 #define MAX_SONG_LENGTH 512
  42
  43 static list_window_t *lw = NULL;
  44
  45 static void
  46 playlist_changed_callback(mpdclient_t *c, int event, gpointer data)
  47 {
  48   D("screen_play.c> playlist_callback() [%d]\n", event);
  49   switch(event)
  50     {
  51     case PLAYLIST_EVENT_DELETE:
  52       break;
  53     case PLAYLIST_EVENT_MOVE:
  54       lw->selected = *((int *) data);
  55       break;
  56     default:
  57       break;
  58     }
  59   /* make shure the playlist is repainted */
  60   lw->clear = 1;
  61   lw->repaint = 1;
  62   list_window_check_selected(lw, c->playlist.length);
  63 }
  64
  65 static char *
  66 list_callback(int index, int *highlight, void *data)
  67 {
  68   static char songname[MAX_SONG_LENGTH];
  69   mpdclient_t *c = (mpdclient_t *) data;
  70   mpd_Song *song;
  71
  72   *highlight = 0;
  73   if( (song=playlist_get_song(c, index)) == NULL )
  74     {
  75       return NULL;
  76     }
  77
  78   if( c->song && song->id==c->song->id && !IS_STOPPED(c->status->state) )
  79     {
  80       *highlight = 1;
  81     }
  82   strfsong(songname, MAX_SONG_LENGTH, LIST_FORMAT, song);
  83   return songname;
  84 }
  85
  86 static int
  87 center_playing_item(screen_t *screen, mpdclient_t *c)
  88 {
  89   int length = c->playlist.length;
  90   int offset = lw->selected-lw->start;
  91   int index;
  92
  93   if( !lw || !c->song || length<lw->rows || IS_STOPPED(c->status->state) )
  94     return 0;
  95
  96   /* try to center the song that are playing */
  97   index = playlist_get_index(c, c->song);
  98   D("Autocenter song id:%d pos:%d index:%d\n", c->song->id,c->song->pos,index);
  99   lw->start = index-(lw->rows/2);
 100   if( lw->start+lw->rows > length )
 101     lw->start = length-lw->rows;
 102   if( lw->start<0 )
 103     lw->start=0;
 104
 105   /* make sure the cursor is in the window */
 106   lw->selected = lw->start+offset;
 107   list_window_check_selected(lw, length);
 108
 109   lw->clear = 1;
 110   lw->repaint = 1;
 111
 112   return 0;
 113 }
 114
 115 static int
 116 handle_save_playlist(screen_t *screen, mpdclient_t *c, char *name)
 117 {
 118   gchar *filename;
 119   gint error;
 120   GCompletion *gcmp;
 121   GList *list = NULL;
 122
 123   void pre_completion_cb(GCompletion *gcmp, gchar *line)
 124     {
 125       if( list == NULL )
 126         {
 127           /* create completion list */
 128           list = gcmp_list_from_path(c, "", NULL, GCMP_TYPE_PLAYLIST);
 129           g_completion_add_items(gcmp, list);
 130         }
 131     }
 132
 133   void post_completion_cb(GCompletion *gcmp, gchar *line, GList *items)
 134     {
 135       if( g_list_length(items)>=1 )
 136         {
 137           screen_display_completion_list(screen, items);
 138           lw->clear = 1;
 139           lw->repaint = 1;
 140         }
 141     }
 142
 143   if( name==NULL )
 144     {
 145       /* initialize completion support */
 146       gcmp = g_completion_new(NULL);
 147       g_completion_set_compare(gcmp, strncmp);
 148       wrln_pre_completion_callback = pre_completion_cb;
 149       wrln_post_completion_callback = post_completion_cb;
 150
 151       /* query the user for a filename */
 152       filename = screen_readln(screen->status_window.w,
 153                                _("Save playlist as: "),
 154                                NULL,
 155                                NULL,
 156                                gcmp);
 157       filename=g_strstrip(filename);
 158
 159       /* destroy completion support */
 160       wrln_pre_completion_callback = NULL;
 161       wrln_post_completion_callback = NULL;
 162       g_completion_free(gcmp);
 163       list = string_list_free(list);
 164     }
 165   else
 166     {
 167       filename=g_strdup(name);
 168     }
 169   if( filename==NULL || filename[0]=='\0' )
 170     return -1;
 171   /* send save command to mpd */
 172   D("Saving playlist as \'%s \'...\n", filename);
 173   if( (error=mpdclient_cmd_save_playlist(c, filename)) )
 174     {
 175       gint code = GET_ACK_ERROR_CODE(error);
 176
 177       if( code == MPD_ACK_ERROR_EXIST )
 178         {
 179           char buf[256];
 180           int key;
 181
 182           snprintf(buf, 256, _("Replace %s [%s/%s] ? "), filename, YES, NO);
 183           key = tolower(screen_getch(screen->status_window.w, buf));
 184           if( key == YES[0] )
 185             {
 186               if( mpdclient_cmd_delete_playlist(c, filename) )
 187                 {
 188                   g_free(filename);
 189                   return -1;
 190                 }
 191               error = handle_save_playlist(screen, c, filename);
 192               g_free(filename);
 193               return error;
 194             }
 195           screen_status_printf(_("Aborted!"));
 196         }
 197       g_free(filename);
 198       return -1;
 199     }
 200   /* success */
 201   screen_status_printf(_("Saved %s"), filename);
 202   g_free(filename);
 203   return 0;
 204 }
 205
 206 static int
 207 handle_add_to_playlist(screen_t *screen, mpdclient_t *c)
 208 {
 209   gchar *path;
 210   GCompletion *gcmp;
 211   GList *list = NULL;
 212   GList *dir_list = NULL;
 213
 214   void add_dir(gchar *dir)
 215     {
 216       g_completion_remove_items(gcmp, list);
 217       list = string_list_remove(list, dir);
 218       list = gcmp_list_from_path(c, dir, list, GCMP_TYPE_RFILE);
 219       g_completion_add_items(gcmp, list);
 220       dir_list = g_list_append(dir_list, g_strdup(dir));
 221     }
 222
 223   void pre_completion_cb(GCompletion *gcmp, gchar *line)
 224     {
 225       D("pre_completion()...\n");
 226       if( list == NULL )
 227         {
 228           /* create initial list */
 229           list = gcmp_list_from_path(c, "", NULL, GCMP_TYPE_RFILE);
 230           g_completion_add_items(gcmp, list);
 231         }
 232       else if( line && line[0] && line[strlen(line)-1]=='/' &&
 233                string_list_find(dir_list, line) == NULL )
 234         {
 235           /* add directory content to list */
 236           add_dir(line);
 237         }
 238     }
 239
 240   void post_completion_cb(GCompletion *gcmp, gchar *line, GList *items)
 241     {
 242       D("post_completion()...\n");
 243       if( g_list_length(items)>=1 )
 244         {
 245           screen_display_completion_list(screen, items);
 246           lw->clear = 1;
 247           lw->repaint = 1;
 248         }
 249
 250       if( line && line[0] && line[strlen(line)-1]=='/' &&
 251           string_list_find(dir_list, line) == NULL )
 252         {
 253           /* add directory content to list */
 254           add_dir(line);
 255         }
 256     }
 257
 258   /* initialize completion support */
 259   gcmp = g_completion_new(NULL);
 260   g_completion_set_compare(gcmp, strncmp);
 261   wrln_pre_completion_callback = pre_completion_cb;
 262   wrln_post_completion_callback = post_completion_cb;
 263   /* get path */
 264   path = screen_readln(screen->status_window.w,
 265                        _("Add: "),
 266                        NULL,
 267                        NULL,
 268                        gcmp);
 269
 270   /* destroy completion data */
 271   wrln_pre_completion_callback = NULL;
 272   wrln_post_completion_callback = NULL;
 273   g_completion_free(gcmp);
 274   string_list_free(list);
 275   string_list_free(dir_list);
 276
 277   /* add the path to the playlist */
 278   if( path && path[0] )
 279     mpdclient_cmd_add_path(c, path);
 280
 281   return 0;
 282 }
 283
 284 static void
 285 play_init(WINDOW *w, int cols, int rows)
 286 {
 287   lw = list_window_init(w, cols, rows);
 288 }
 289
 290 static void
 291 play_open(screen_t *screen, mpdclient_t *c)
 292 {
 293   static gboolean install_cb = TRUE;
 294
 295   if( install_cb )
 296     {
 297       mpdclient_install_playlist_callback(c, playlist_changed_callback);
 298       install_cb = FALSE;
 299     }
 300 }
 301
 302 static void
 303 play_resize(int cols, int rows)
 304 {
 305   lw->cols = cols;
 306   lw->rows = rows;
 307 }
 308
 309
 310 static void
 311 play_exit(void)
 312 {
 313   list_window_free(lw);
 314 }
 315
 316 static char *
 317 play_title(char *str, size_t size)
 318 {
 319   if( strcmp(options.host, "localhost") == 0 )
 320     return _("Playlist");
 321
 322   snprintf(str, size, _("Playlist on %s"), options.host);
 323
 324   return str;
 325 }
 326
 327 static void
 328 play_paint(screen_t *screen, mpdclient_t *c)
 329 {
 330   lw->clear = 1;
 331
 332   list_window_paint(lw, list_callback, (void *) c);
 333   wnoutrefresh(lw->w);
 334 }
 335
 336 static void
 337 play_update(screen_t *screen, mpdclient_t *c)
 338 {
 339   if( options.auto_center )
 340     {
 341       static int prev_song_id = 0;
 342
 343       if( c->song && prev_song_id != c->song->id )
 344         {
 345           center_playing_item(screen, c);
 346           prev_song_id = c->song->id;
 347         }
 348     }
 349
 350   if( c->playlist.updated )
 351     {
 352       if( lw->selected >= c->playlist.length )
 353         lw->selected = c->playlist.length-1;
 354       if( lw->start    >= c->playlist.length )
 355         list_window_reset(lw);
 356
 357       play_paint(screen, c);
 358       c->playlist.updated = FALSE;
 359     }
 360   else if( lw->repaint || 1)
 361     {
 362       list_window_paint(lw, list_callback, (void *) c);
 363       wnoutrefresh(lw->w);
 364       lw->repaint = 0;
 365     }
 366 }
 367
 368 static int
 369 play_cmd(screen_t *screen, mpdclient_t *c, command_t cmd)
 370 {
 371   switch(cmd)
 372     {
 373     case CMD_PLAY:
 374       mpdclient_cmd_play(c, lw->selected);
 375       return 1;
 376     case CMD_DELETE:
 377       mpdclient_cmd_delete(c, lw->selected);
 378       return 1;
 379     case CMD_SAVE_PLAYLIST:
 380       handle_save_playlist(screen, c, NULL);
 381       return 1;
 382     case CMD_ADD:
 383       handle_add_to_playlist(screen, c);
 384       return 1;
 385     case CMD_SCREEN_UPDATE:
 386       screen->painted = 0;
 387       lw->clear = 1;
 388       lw->repaint = 1;
 389       center_playing_item(screen, c);
 390       return 1;
 391     case CMD_LIST_MOVE_UP:
 392       mpdclient_cmd_move(c, lw->selected, lw->selected-1);
 393       return 1;
 394     case CMD_LIST_MOVE_DOWN:
 395       mpdclient_cmd_move(c, lw->selected, lw->selected+1);
 396       return 1;
 397     case CMD_LIST_FIND:
 398     case CMD_LIST_RFIND:
 399     case CMD_LIST_FIND_NEXT:
 400     case CMD_LIST_RFIND_NEXT:
 401       return screen_find(screen, c,
 402                          lw, c->playlist.length,
 403                          cmd, list_callback);
 404     default:
 405       break;
 406     }
 407   return list_window_cmd(lw, c->playlist.length, cmd) ;
 408 }
 409
 410
 411
 412 static list_window_t *
 413 play_lw(void)
 414 {
 415   return lw;
 416 }
 417
 418
 419 screen_functions_t *
 420 get_screen_playlist(void)
 421 {
 422   static screen_functions_t functions;
 423
 424   memset(&functions, 0, sizeof(screen_functions_t));
 425   functions.init   = play_init;
 426   functions.exit   = play_exit;
 427   functions.open   = play_open;
 428   functions.close  = NULL;
 429   functions.resize = play_resize;
 430   functions.paint  = play_paint;
 431   functions.update = play_update;
 432   functions.cmd    = play_cmd;
 433   functions.get_lw = play_lw;
 434   functions.get_title = play_title;
 435
 436   return &functions;
 437 }