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       if( lw->selected<lw->start )
  56         lw->start--;
  57       break;
  58     default:
  59       break;
  60     }
  61   /* make shure the playlist is repainted */
  62   lw->clear = 1;
  63   lw->repaint = 1;
  64   list_window_check_selected(lw, c->playlist.length);
  65 }
  66
  67 static char *
  68 list_callback(int index, int *highlight, void *data)
  69 {
  70   static char songname[MAX_SONG_LENGTH];
  71   mpdclient_t *c = (mpdclient_t *) data;
  72   mpd_Song *song;
  73
  74   *highlight = 0;
  75   if( (song=playlist_get_song(c, index)) == NULL )
  76     {
  77       return NULL;
  78     }
  79
  80   if( c->song && song->id==c->song->id && !IS_STOPPED(c->status->state) )
  81     {
  82       *highlight = 1;
  83     }
  84   strfsong(songname, MAX_SONG_LENGTH, LIST_FORMAT, song);
  85   return songname;
  86 }
  87
  88 static int
  89 center_playing_item(screen_t *screen, mpdclient_t *c)
  90 {
  91   int length = c->playlist.length;
  92   int offset = lw->selected-lw->start;
  93   int index;
  94
  95   if( !lw || !c->song || length<lw->rows || IS_STOPPED(c->status->state) )
  96     return 0;
  97
  98   /* try to center the song that are playing */
  99   index = playlist_get_index(c, c->song);
 100   D("Autocenter song id:%d pos:%d index:%d\n", c->song->id,c->song->pos,index);
 101   lw->start = index-(lw->rows/2);
 102   if( lw->start+lw->rows > length )
 103     lw->start = length-lw->rows;
 104   if( lw->start<0 )
 105     lw->start=0;
 106
 107   /* make sure the cursor is in the window */
 108   lw->selected = lw->start+offset;
 109   list_window_check_selected(lw, length);
 110
 111   lw->clear = 1;
 112   lw->repaint = 1;
 113
 114   return 0;
 115 }
 116
 117
 118 int
 119 playlist_save(screen_t *screen, mpdclient_t *c, char *name, char *defaultname)
 120 {
 121   gchar *filename;
 122   gint error;
 123   GCompletion *gcmp;
 124   GList *list = NULL;
 125
 126   void pre_completion_cb(GCompletion *gcmp, gchar *line)
 127     {
 128       if( list == NULL )
 129         {
 130           /* create completion list */
 131           list = gcmp_list_from_path(c, "", NULL, GCMP_TYPE_PLAYLIST);
 132           g_completion_add_items(gcmp, list);
 133         }
 134     }
 135
 136   void post_completion_cb(GCompletion *gcmp, gchar *line, GList *items)
 137     {
 138       if( g_list_length(items)>=1 )
 139         {
 140           screen_display_completion_list(screen, items);
 141           lw->clear = 1;
 142           lw->repaint = 1;
 143         }
 144     }
 145
 146   if( name==NULL )
 147     {
 148       /* initialize completion support */
 149       gcmp = g_completion_new(NULL);
 150       g_completion_set_compare(gcmp, strncmp);
 151       wrln_pre_completion_callback = pre_completion_cb;
 152       wrln_post_completion_callback = post_completion_cb;
 153
 154       /* query the user for a filename */
 155       filename = screen_readln(screen->status_window.w,
 156                                _("Save playlist as: "),
 157                                defaultname,
 158                                NULL,
 159                                gcmp);
 160
 161       /* destroy completion support */
 162       wrln_pre_completion_callback = NULL;
 163       wrln_post_completion_callback = NULL;
 164       g_completion_free(gcmp);
 165       list = string_list_free(list);
 166       if( filename )
 167         filename=g_strstrip(filename);
 168     }
 169   else
 170     {
 171       filename=g_strdup(name);
 172     }
 173   if( filename==NULL || filename[0]=='\0' )
 174     return -1;
 175   /* send save command to mpd */
 176   D("Saving playlist as \'%s \'...\n", filename);
 177   if( (error=mpdclient_cmd_save_playlist(c, filename)) )
 178     {
 179       gint code = GET_ACK_ERROR_CODE(error);
 180
 181       if( code == MPD_ACK_ERROR_EXIST )
 182         {
 183           char *buf;
 184           int key;
 185
 186           buf=g_strdup_printf(_("Replace %s [%s/%s] ? "), filename, YES, NO);
 187           key = tolower(screen_getch(screen->status_window.w, buf));
 188           g_free(buf);
 189           if( key == YES[0] )
 190             {
 191               if( mpdclient_cmd_delete_playlist(c, filename) )
 192                 {
 193                   g_free(filename);
 194                   return -1;
 195                 }
 196               error = playlist_save(screen, c, filename, NULL);
 197               g_free(filename);
 198               return error;
 199             }
 200           screen_status_printf(_("Aborted!"));
 201         }
 202       g_free(filename);
 203       return -1;
 204     }
 205   /* success */
 206   screen_status_printf(_("Saved %s"), filename);
 207   g_free(filename);
 208   return 0;
 209 }
 210
 211 static int
 212 handle_add_to_playlist(screen_t *screen, mpdclient_t *c)
 213 {
 214   gchar *path;
 215   GCompletion *gcmp;
 216   GList *list = NULL;
 217   GList *dir_list = NULL;
 218
 219   void add_dir(gchar *dir)
 220     {
 221       g_completion_remove_items(gcmp, list);
 222       list = string_list_remove(list, dir);
 223       list = gcmp_list_from_path(c, dir, list, GCMP_TYPE_RFILE);
 224       g_completion_add_items(gcmp, list);
 225       dir_list = g_list_append(dir_list, g_strdup(dir));
 226     }
 227
 228   void pre_completion_cb(GCompletion *gcmp, gchar *line)
 229     {
 230       D("pre_completion()...\n");
 231       if( list == NULL )
 232         {
 233           /* create initial list */
 234           list = gcmp_list_from_path(c, "", NULL, GCMP_TYPE_RFILE);
 235           g_completion_add_items(gcmp, list);
 236         }
 237       else if( line && line[0] && line[strlen(line)-1]=='/' &&
 238                string_list_find(dir_list, line) == NULL )
 239         {
 240           /* add directory content to list */
 241           add_dir(line);
 242         }
 243     }
 244
 245   void post_completion_cb(GCompletion *gcmp, gchar *line, GList *items)
 246     {
 247       D("post_completion()...\n");
 248       if( g_list_length(items)>=1 )
 249         {
 250           screen_display_completion_list(screen, items);
 251           lw->clear = 1;
 252           lw->repaint = 1;
 253         }
 254
 255       if( line && line[0] && line[strlen(line)-1]=='/' &&
 256           string_list_find(dir_list, line) == NULL )
 257         {
 258           /* add directory content to list */
 259           add_dir(line);
 260         }
 261     }
 262
 263   /* initialize completion support */
 264   gcmp = g_completion_new(NULL);
 265   g_completion_set_compare(gcmp, strncmp);
 266   wrln_pre_completion_callback = pre_completion_cb;
 267   wrln_post_completion_callback = post_completion_cb;
 268   /* get path */
 269   path = screen_readln(screen->status_window.w,
 270                        _("Add: "),
 271                        NULL,
 272                        NULL,
 273                        gcmp);
 274
 275   /* destroy completion data */
 276   wrln_pre_completion_callback = NULL;
 277   wrln_post_completion_callback = NULL;
 278   g_completion_free(gcmp);
 279   string_list_free(list);
 280   string_list_free(dir_list);
 281
 282   /* add the path to the playlist */
 283   if( path && path[0] )
 284     mpdclient_cmd_add_path(c, path);
 285
 286   return 0;
 287 }
 288
 289 static void
 290 play_init(WINDOW *w, int cols, int rows)
 291 {
 292   lw = list_window_init(w, cols, rows);
 293 }
 294
 295 static void
 296 play_open(screen_t *screen, mpdclient_t *c)
 297 {
 298   static gboolean install_cb = TRUE;
 299
 300   if( install_cb )
 301     {
 302       mpdclient_install_playlist_callback(c, playlist_changed_callback);
 303       install_cb = FALSE;
 304     }
 305 }
 306
 307 static void
 308 play_resize(int cols, int rows)
 309 {
 310   lw->cols = cols;
 311   lw->rows = rows;
 312 }
 313
 314
 315 static void
 316 play_exit(void)
 317 {
 318   list_window_free(lw);
 319 }
 320
 321 static char *
 322 play_title(char *str, size_t size)
 323 {
 324   if( strcmp(options.host, "localhost") == 0 )
 325     return _("Playlist");
 326
 327   g_snprintf(str, size, _("Playlist on %s"), options.host);
 328
 329   return str;
 330 }
 331
 332 static void
 333 play_paint(screen_t *screen, mpdclient_t *c)
 334 {
 335   lw->clear = 1;
 336
 337   list_window_paint(lw, list_callback, (void *) c);
 338   wnoutrefresh(lw->w);
 339 }
 340
 341 static void
 342 play_update(screen_t *screen, mpdclient_t *c)
 343 {
 344   if( options.auto_center )
 345     {
 346       static int prev_song_id = 0;
 347
 348       if( c->song && prev_song_id != c->song->id )
 349         {
 350           center_playing_item(screen, c);
 351           prev_song_id = c->song->id;
 352         }
 353     }
 354
 355   if( c->playlist.updated )
 356     {
 357       if( lw->selected >= c->playlist.length )
 358         lw->selected = c->playlist.length-1;
 359       if( lw->start    >= c->playlist.length )
 360         list_window_reset(lw);
 361
 362       play_paint(screen, c);
 363       c->playlist.updated = FALSE;
 364     }
 365   else if( lw->repaint || 1)
 366     {
 367       list_window_paint(lw, list_callback, (void *) c);
 368       wnoutrefresh(lw->w);
 369       lw->repaint = 0;
 370     }
 371 }
 372
 373 #ifdef HAVE_GETMOUSE
 374 static int
 375 handle_mouse_event(screen_t *screen, mpdclient_t *c)
 376 {
 377   int row;
 378   int selected;
 379   unsigned long bstate;
 380
 381   if( screen_get_mouse_event(c, lw, c->playlist.length, &bstate, &row) )
 382     return 1;
 383
 384   if( bstate & BUTTON1_DOUBLE_CLICKED )
 385     {
 386       /* stop */
 387       screen_cmd(c, CMD_STOP);
 388       return 1;
 389     }
 390
 391   selected = lw->start+row;
 392
 393   if( bstate & BUTTON1_CLICKED )
 394     {
 395       /* play */
 396       if( lw->start+row < c->playlist.length )
 397         mpdclient_cmd_play(c, lw->start+row);
 398     }
 399   else if( bstate & BUTTON3_CLICKED )
 400     {
 401       /* delete */
 402       if( selected == lw->selected )
 403         mpdclient_cmd_delete(c, lw->selected);
 404     }
 405   lw->selected = selected;
 406   list_window_check_selected(lw, c->playlist.length);
 407
 408   return 1;
 409 }
 410 #else
 411 #define handle_mouse_event(s,c) (0)
 412 #endif
 413
 414 static int
 415 play_cmd(screen_t *screen, mpdclient_t *c, command_t cmd)
 416 {
 417   switch(cmd)
 418     {
 419     case CMD_PLAY:
 420       mpdclient_cmd_play(c, lw->selected);
 421       return 1;
 422     case CMD_DELETE:
 423       mpdclient_cmd_delete(c, lw->selected);
 424       return 1;
 425     case CMD_SAVE_PLAYLIST:
 426       playlist_save(screen, c, NULL, NULL);
 427       return 1;
 428     case CMD_ADD:
 429       handle_add_to_playlist(screen, c);
 430       return 1;
 431     case CMD_SCREEN_UPDATE:
 432       screen->painted = 0;
 433       lw->clear = 1;
 434       lw->repaint = 1;
 435       center_playing_item(screen, c);
 436       return 1;
 437     case CMD_LIST_MOVE_UP:
 438       mpdclient_cmd_move(c, lw->selected, lw->selected-1);
 439       return 1;
 440     case CMD_LIST_MOVE_DOWN:
 441       mpdclient_cmd_move(c, lw->selected, lw->selected+1);
 442       return 1;
 443     case CMD_LIST_FIND:
 444     case CMD_LIST_RFIND:
 445     case CMD_LIST_FIND_NEXT:
 446     case CMD_LIST_RFIND_NEXT:
 447       return screen_find(screen, c,
 448                          lw, c->playlist.length,
 449                          cmd, list_callback, (void *) c);
 450     case CMD_MOUSE_EVENT:
 451       return handle_mouse_event(screen,c);
 452     default:
 453       break;
 454     }
 455   return list_window_cmd(lw, c->playlist.length, cmd) ;
 456 }
 457
 458
 459
 460 static list_window_t *
 461 play_lw(void)
 462 {
 463   return lw;
 464 }
 465
 466
 467 screen_functions_t *
 468 get_screen_playlist(void)
 469 {
 470   static screen_functions_t functions;
 471
 472   memset(&functions, 0, sizeof(screen_functions_t));
 473   functions.init   = play_init;
 474   functions.exit   = play_exit;
 475   functions.open   = play_open;
 476   functions.close  = NULL;
 477   functions.resize = play_resize;
 478   functions.paint  = play_paint;
 479   functions.update = play_update;
 480   functions.cmd    = play_cmd;
 481   functions.get_lw = play_lw;
 482   functions.get_title = play_title;
 483
 484   return &functions;
 485 }