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