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;
 182           int key;
 183
 184           buf=g_strdup_printf(_("Replace %s [%s/%s] ? "), filename, YES, NO);
 185           key = tolower(screen_getch(screen->status_window.w, buf));
 186           g_free(buf);
 187           if( key == YES[0] )
 188             {
 189               if( mpdclient_cmd_delete_playlist(c, filename) )
 190                 {
 191                   g_free(filename);
 192                   return -1;
 193                 }
 194               error = handle_save_playlist(screen, c, filename);
 195               g_free(filename);
 196               return error;
 197             }
 198           screen_status_printf(_("Aborted!"));
 199         }
 200       g_free(filename);
 201       return -1;
 202     }
 203   /* success */
 204   screen_status_printf(_("Saved %s"), filename);
 205   g_free(filename);
 206   return 0;
 207 }
 208
 209 static int
 210 handle_add_to_playlist(screen_t *screen, mpdclient_t *c)
 211 {
 212   gchar *path;
 213   GCompletion *gcmp;
 214   GList *list = NULL;
 215   GList *dir_list = NULL;
 216
 217   void add_dir(gchar *dir)
 218     {
 219       g_completion_remove_items(gcmp, list);
 220       list = string_list_remove(list, dir);
 221       list = gcmp_list_from_path(c, dir, list, GCMP_TYPE_RFILE);
 222       g_completion_add_items(gcmp, list);
 223       dir_list = g_list_append(dir_list, g_strdup(dir));
 224     }
 225
 226   void pre_completion_cb(GCompletion *gcmp, gchar *line)
 227     {
 228       D("pre_completion()...\n");
 229       if( list == NULL )
 230         {
 231           /* create initial list */
 232           list = gcmp_list_from_path(c, "", NULL, GCMP_TYPE_RFILE);
 233           g_completion_add_items(gcmp, list);
 234         }
 235       else if( line && line[0] && line[strlen(line)-1]=='/' &&
 236                string_list_find(dir_list, line) == NULL )
 237         {
 238           /* add directory content to list */
 239           add_dir(line);
 240         }
 241     }
 242
 243   void post_completion_cb(GCompletion *gcmp, gchar *line, GList *items)
 244     {
 245       D("post_completion()...\n");
 246       if( g_list_length(items)>=1 )
 247         {
 248           screen_display_completion_list(screen, items);
 249           lw->clear = 1;
 250           lw->repaint = 1;
 251         }
 252
 253       if( line && line[0] && line[strlen(line)-1]=='/' &&
 254           string_list_find(dir_list, line) == NULL )
 255         {
 256           /* add directory content to list */
 257           add_dir(line);
 258         }
 259     }
 260
 261   /* initialize completion support */
 262   gcmp = g_completion_new(NULL);
 263   g_completion_set_compare(gcmp, strncmp);
 264   wrln_pre_completion_callback = pre_completion_cb;
 265   wrln_post_completion_callback = post_completion_cb;
 266   /* get path */
 267   path = screen_readln(screen->status_window.w,
 268                        _("Add: "),
 269                        NULL,
 270                        NULL,
 271                        gcmp);
 272
 273   /* destroy completion data */
 274   wrln_pre_completion_callback = NULL;
 275   wrln_post_completion_callback = NULL;
 276   g_completion_free(gcmp);
 277   string_list_free(list);
 278   string_list_free(dir_list);
 279
 280   /* add the path to the playlist */
 281   if( path && path[0] )
 282     mpdclient_cmd_add_path(c, path);
 283
 284   return 0;
 285 }
 286
 287 static void
 288 play_init(WINDOW *w, int cols, int rows)
 289 {
 290   lw = list_window_init(w, cols, rows);
 291 }
 292
 293 static void
 294 play_open(screen_t *screen, mpdclient_t *c)
 295 {
 296   static gboolean install_cb = TRUE;
 297
 298   if( install_cb )
 299     {
 300       mpdclient_install_playlist_callback(c, playlist_changed_callback);
 301       install_cb = FALSE;
 302     }
 303 }
 304
 305 static void
 306 play_resize(int cols, int rows)
 307 {
 308   lw->cols = cols;
 309   lw->rows = rows;
 310 }
 311
 312
 313 static void
 314 play_exit(void)
 315 {
 316   list_window_free(lw);
 317 }
 318
 319 static char *
 320 play_title(char *str, size_t size)
 321 {
 322   if( strcmp(options.host, "localhost") == 0 )
 323     return _("Playlist");
 324
 325   g_snprintf(str, size, _("Playlist on %s"), options.host);
 326
 327   return str;
 328 }
 329
 330 static void
 331 play_paint(screen_t *screen, mpdclient_t *c)
 332 {
 333   lw->clear = 1;
 334
 335   list_window_paint(lw, list_callback, (void *) c);
 336   wnoutrefresh(lw->w);
 337 }
 338
 339 static void
 340 play_update(screen_t *screen, mpdclient_t *c)
 341 {
 342   if( options.auto_center )
 343     {
 344       static int prev_song_id = 0;
 345
 346       if( c->song && prev_song_id != c->song->id )
 347         {
 348           center_playing_item(screen, c);
 349           prev_song_id = c->song->id;
 350         }
 351     }
 352
 353   if( c->playlist.updated )
 354     {
 355       if( lw->selected >= c->playlist.length )
 356         lw->selected = c->playlist.length-1;
 357       if( lw->start    >= c->playlist.length )
 358         list_window_reset(lw);
 359
 360       play_paint(screen, c);
 361       c->playlist.updated = FALSE;
 362     }
 363   else if( lw->repaint || 1)
 364     {
 365       list_window_paint(lw, list_callback, (void *) c);
 366       wnoutrefresh(lw->w);
 367       lw->repaint = 0;
 368     }
 369 }
 370
 371 #ifdef HAVE_GETMOUSE
 372 static int
 373 handle_mouse_event(screen_t *screen, mpdclient_t *c)
 374 {
 375   int row;
 376   int selected;
 377   unsigned long bstate;
 378
 379   if( screen_get_mouse_event(c, lw, c->playlist.length, &bstate, &row) )
 380     return 1;
 381
 382   if( bstate & BUTTON1_DOUBLE_CLICKED )
 383     {
 384       /* stop */
 385       screen_cmd(c, CMD_STOP);
 386       return 1;
 387     }
 388
 389   selected = lw->start+row;
 390
 391   if( bstate & BUTTON1_CLICKED )
 392     {
 393       /* play */
 394       if( lw->start+row < c->playlist.length )
 395         mpdclient_cmd_play(c, lw->start+row);
 396     }
 397   else if( bstate & BUTTON3_CLICKED )
 398     {
 399       /* delete */
 400       if( selected == lw->selected )
 401         mpdclient_cmd_delete(c, lw->selected);
 402     }
 403   lw->selected = selected;
 404   list_window_check_selected(lw, c->playlist.length);
 405
 406   return 1;
 407 }
 408 #else
 409 #define handle_mouse_event(s,c) (0)
 410 #endif
 411
 412 static int
 413 play_cmd(screen_t *screen, mpdclient_t *c, command_t cmd)
 414 {
 415   switch(cmd)
 416     {
 417     case CMD_PLAY:
 418       mpdclient_cmd_play(c, lw->selected);
 419       return 1;
 420     case CMD_DELETE:
 421       mpdclient_cmd_delete(c, lw->selected);
 422       return 1;
 423     case CMD_SAVE_PLAYLIST:
 424       handle_save_playlist(screen, c, NULL);
 425       return 1;
 426     case CMD_ADD:
 427       handle_add_to_playlist(screen, c);
 428       return 1;
 429     case CMD_SCREEN_UPDATE:
 430       screen->painted = 0;
 431       lw->clear = 1;
 432       lw->repaint = 1;
 433       center_playing_item(screen, c);
 434       return 1;
 435     case CMD_LIST_MOVE_UP:
 436       mpdclient_cmd_move(c, lw->selected, lw->selected-1);
 437       return 1;
 438     case CMD_LIST_MOVE_DOWN:
 439       mpdclient_cmd_move(c, lw->selected, lw->selected+1);
 440       return 1;
 441     case CMD_LIST_FIND:
 442     case CMD_LIST_RFIND:
 443     case CMD_LIST_FIND_NEXT:
 444     case CMD_LIST_RFIND_NEXT:
 445       return screen_find(screen, c,
 446                          lw, c->playlist.length,
 447                          cmd, list_callback, (void *) c);
 448     case CMD_MOUSE_EVENT:
 449       return handle_mouse_event(screen,c);
 450     default:
 451       break;
 452     }
 453   return list_window_cmd(lw, c->playlist.length, cmd) ;
 454 }
 455
 456
 457
 458 static list_window_t *
 459 play_lw(void)
 460 {
 461   return lw;
 462 }
 463
 464
 465 screen_functions_t *
 466 get_screen_playlist(void)
 467 {
 468   static screen_functions_t functions;
 469
 470   memset(&functions, 0, sizeof(screen_functions_t));
 471   functions.init   = play_init;
 472   functions.exit   = play_exit;
 473   functions.open   = play_open;
 474   functions.close  = NULL;
 475   functions.resize = play_resize;
 476   functions.paint  = play_paint;
 477   functions.update = play_update;
 478   functions.cmd    = play_cmd;
 479   functions.get_lw = play_lw;
 480   functions.get_title = play_title;
 481
 482   return &functions;
 483 }