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
 160       /* destroy completion support */
 161       wrln_pre_completion_callback = NULL;
 162       wrln_post_completion_callback = NULL;
 163       g_completion_free(gcmp);
 164       list = string_list_free(list);
 165       if( filename )
 166         filename=g_strstrip(filename);
 167     }
 168   else
 169     {
 170       filename=g_strdup(name);
 171     }
 172   if( filename==NULL || filename[0]=='\0' )
 173     return -1;
 174   /* send save command to mpd */
 175   D("Saving playlist as \'%s \'...\n", filename);
 176   if( (error=mpdclient_cmd_save_playlist(c, filename)) )
 177     {
 178       gint code = GET_ACK_ERROR_CODE(error);
 179
 180       if( code == MPD_ACK_ERROR_EXIST )
 181         {
 182           char *buf;
 183           int key;
 184
 185           buf=g_strdup_printf(_("Replace %s [%s/%s] ? "), filename, YES, NO);
 186           key = tolower(screen_getch(screen->status_window.w, buf));
 187           g_free(buf);
 188           if( key == YES[0] )
 189             {
 190               if( mpdclient_cmd_delete_playlist(c, filename) )
 191                 {
 192                   g_free(filename);
 193                   return -1;
 194                 }
 195               error = handle_save_playlist(screen, c, filename);
 196               g_free(filename);
 197               return error;
 198             }
 199           screen_status_printf(_("Aborted!"));
 200         }
 201       g_free(filename);
 202       return -1;
 203     }
 204   /* success */
 205   screen_status_printf(_("Saved %s"), filename);
 206   g_free(filename);
 207   return 0;
 208 }
 209
 210 static int
 211 handle_add_to_playlist(screen_t *screen, mpdclient_t *c)
 212 {
 213   gchar *path;
 214   GCompletion *gcmp;
 215   GList *list = NULL;
 216   GList *dir_list = NULL;
 217
 218   void add_dir(gchar *dir)
 219     {
 220       g_completion_remove_items(gcmp, list);
 221       list = string_list_remove(list, dir);
 222       list = gcmp_list_from_path(c, dir, list, GCMP_TYPE_RFILE);
 223       g_completion_add_items(gcmp, list);
 224       dir_list = g_list_append(dir_list, g_strdup(dir));
 225     }
 226
 227   void pre_completion_cb(GCompletion *gcmp, gchar *line)
 228     {
 229       D("pre_completion()...\n");
 230       if( list == NULL )
 231         {
 232           /* create initial list */
 233           list = gcmp_list_from_path(c, "", NULL, GCMP_TYPE_RFILE);
 234           g_completion_add_items(gcmp, list);
 235         }
 236       else if( line && line[0] && line[strlen(line)-1]=='/' &&
 237                string_list_find(dir_list, line) == NULL )
 238         {
 239           /* add directory content to list */
 240           add_dir(line);
 241         }
 242     }
 243
 244   void post_completion_cb(GCompletion *gcmp, gchar *line, GList *items)
 245     {
 246       D("post_completion()...\n");
 247       if( g_list_length(items)>=1 )
 248         {
 249           screen_display_completion_list(screen, items);
 250           lw->clear = 1;
 251           lw->repaint = 1;
 252         }
 253
 254       if( line && line[0] && line[strlen(line)-1]=='/' &&
 255           string_list_find(dir_list, line) == NULL )
 256         {
 257           /* add directory content to list */
 258           add_dir(line);
 259         }
 260     }
 261
 262   /* initialize completion support */
 263   gcmp = g_completion_new(NULL);
 264   g_completion_set_compare(gcmp, strncmp);
 265   wrln_pre_completion_callback = pre_completion_cb;
 266   wrln_post_completion_callback = post_completion_cb;
 267   /* get path */
 268   path = screen_readln(screen->status_window.w,
 269                        _("Add: "),
 270                        NULL,
 271                        NULL,
 272                        gcmp);
 273
 274   /* destroy completion data */
 275   wrln_pre_completion_callback = NULL;
 276   wrln_post_completion_callback = NULL;
 277   g_completion_free(gcmp);
 278   string_list_free(list);
 279   string_list_free(dir_list);
 280
 281   /* add the path to the playlist */
 282   if( path && path[0] )
 283     mpdclient_cmd_add_path(c, path);
 284
 285   return 0;
 286 }
 287
 288 static void
 289 play_init(WINDOW *w, int cols, int rows)
 290 {
 291   lw = list_window_init(w, cols, rows);
 292 }
 293
 294 static void
 295 play_open(screen_t *screen, mpdclient_t *c)
 296 {
 297   static gboolean install_cb = TRUE;
 298
 299   if( install_cb )
 300     {
 301       mpdclient_install_playlist_callback(c, playlist_changed_callback);
 302       install_cb = FALSE;
 303     }
 304 }
 305
 306 static void
 307 play_resize(int cols, int rows)
 308 {
 309   lw->cols = cols;
 310   lw->rows = rows;
 311 }
 312
 313
 314 static void
 315 play_exit(void)
 316 {
 317   list_window_free(lw);
 318 }
 319
 320 static char *
 321 play_title(char *str, size_t size)
 322 {
 323   if( strcmp(options.host, "localhost") == 0 )
 324     return _("Playlist");
 325
 326   g_snprintf(str, size, _("Playlist on %s"), options.host);
 327
 328   return str;
 329 }
 330
 331 static void
 332 play_paint(screen_t *screen, mpdclient_t *c)
 333 {
 334   lw->clear = 1;
 335
 336   list_window_paint(lw, list_callback, (void *) c);
 337   wnoutrefresh(lw->w);
 338 }
 339
 340 static void
 341 play_update(screen_t *screen, mpdclient_t *c)
 342 {
 343   if( options.auto_center )
 344     {
 345       static int prev_song_id = 0;
 346
 347       if( c->song && prev_song_id != c->song->id )
 348         {
 349           center_playing_item(screen, c);
 350           prev_song_id = c->song->id;
 351         }
 352     }
 353
 354   if( c->playlist.updated )
 355     {
 356       if( lw->selected >= c->playlist.length )
 357         lw->selected = c->playlist.length-1;
 358       if( lw->start    >= c->playlist.length )
 359         list_window_reset(lw);
 360
 361       play_paint(screen, c);
 362       c->playlist.updated = FALSE;
 363     }
 364   else if( lw->repaint || 1)
 365     {
 366       list_window_paint(lw, list_callback, (void *) c);
 367       wnoutrefresh(lw->w);
 368       lw->repaint = 0;
 369     }
 370 }
 371
 372 #ifdef HAVE_GETMOUSE
 373 static int
 374 handle_mouse_event(screen_t *screen, mpdclient_t *c)
 375 {
 376   int row;
 377   int selected;
 378   unsigned long bstate;
 379
 380   if( screen_get_mouse_event(c, lw, c->playlist.length, &bstate, &row) )
 381     return 1;
 382
 383   if( bstate & BUTTON1_DOUBLE_CLICKED )
 384     {
 385       /* stop */
 386       screen_cmd(c, CMD_STOP);
 387       return 1;
 388     }
 389
 390   selected = lw->start+row;
 391
 392   if( bstate & BUTTON1_CLICKED )
 393     {
 394       /* play */
 395       if( lw->start+row < c->playlist.length )
 396         mpdclient_cmd_play(c, lw->start+row);
 397     }
 398   else if( bstate & BUTTON3_CLICKED )
 399     {
 400       /* delete */
 401       if( selected == lw->selected )
 402         mpdclient_cmd_delete(c, lw->selected);
 403     }
 404   lw->selected = selected;
 405   list_window_check_selected(lw, c->playlist.length);
 406
 407   return 1;
 408 }
 409 #else
 410 #define handle_mouse_event(s,c) (0)
 411 #endif
 412
 413 static int
 414 play_cmd(screen_t *screen, mpdclient_t *c, command_t cmd)
 415 {
 416   switch(cmd)
 417     {
 418     case CMD_PLAY:
 419       mpdclient_cmd_play(c, lw->selected);
 420       return 1;
 421     case CMD_DELETE:
 422       mpdclient_cmd_delete(c, lw->selected);
 423       return 1;
 424     case CMD_SAVE_PLAYLIST:
 425       handle_save_playlist(screen, c, NULL);
 426       return 1;
 427     case CMD_ADD:
 428       handle_add_to_playlist(screen, c);
 429       return 1;
 430     case CMD_SCREEN_UPDATE:
 431       screen->painted = 0;
 432       lw->clear = 1;
 433       lw->repaint = 1;
 434       center_playing_item(screen, c);
 435       return 1;
 436     case CMD_LIST_MOVE_UP:
 437       mpdclient_cmd_move(c, lw->selected, lw->selected-1);
 438       return 1;
 439     case CMD_LIST_MOVE_DOWN:
 440       mpdclient_cmd_move(c, lw->selected, lw->selected+1);
 441       return 1;
 442     case CMD_LIST_FIND:
 443     case CMD_LIST_RFIND:
 444     case CMD_LIST_FIND_NEXT:
 445     case CMD_LIST_RFIND_NEXT:
 446       return screen_find(screen, c,
 447                          lw, c->playlist.length,
 448                          cmd, list_callback, (void *) c);
 449     case CMD_MOUSE_EVENT:
 450       return handle_mouse_event(screen,c);
 451     default:
 452       break;
 453     }
 454   return list_window_cmd(lw, c->playlist.length, cmd) ;
 455 }
 456
 457
 458
 459 static list_window_t *
 460 play_lw(void)
 461 {
 462   return lw;
 463 }
 464
 465
 466 screen_functions_t *
 467 get_screen_playlist(void)
 468 {
 469   static screen_functions_t functions;
 470
 471   memset(&functions, 0, sizeof(screen_functions_t));
 472   functions.init   = play_init;
 473   functions.exit   = play_exit;
 474   functions.open   = play_open;
 475   functions.close  = NULL;
 476   functions.resize = play_resize;
 477   functions.paint  = play_paint;
 478   functions.update = play_update;
 479   functions.cmd    = play_cmd;
 480   functions.get_lw = play_lw;
 481   functions.get_title = play_title;
 482
 483   return &functions;
 484 }