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 "config.h"
  22 #include "ncmpc.h"
  23 #include "options.h"
  24 #include "support.h"
  25 #include "mpdclient.h"
  26 #include "utils.h"
  27 #include "strfsong.h"
  28 #include "wreadln.h"
  29 #include "command.h"
  30 #include "colors.h"
  31 #include "screen.h"
  32 #include "screen_utils.h"
  33 #include "screen_play.h"
  34 #include "gcc.h"
  35
  36 #include <ctype.h>
  37 #include <stdlib.h>
  38 #include <string.h>
  39 #include <time.h>
  40 #include <glib.h>
  41 #include <ncurses.h>
  42
  43 #define MAX_SONG_LENGTH 512
  44
  45 typedef struct
  46 {
  47   GList **list;
  48   GList **dir_list;
  49   screen_t *screen;
  50   mpdclient_t *c;
  51 } completion_callback_data_t;
  52
  53 static list_window_t *lw = NULL;
  54
  55 static void
  56 playlist_changed_callback(mpdclient_t *c, int event, gpointer data)
  57 {
  58         D("screen_play.c> playlist_callback() [%d]\n", event);
  59         switch(event) {
  60         case PLAYLIST_EVENT_DELETE:
  61                 break;
  62         case PLAYLIST_EVENT_MOVE:
  63                 lw->selected = *((int *) data);
  64                 if( lw->selected<lw->start )
  65                         lw->start--;
  66                 break;
  67         default:
  68                 break;
  69         }
  70         /* make shure the playlist is repainted */
  71         lw->clear = 1;
  72         lw->repaint = 1;
  73         list_window_check_selected(lw, c->playlist.list->len);
  74 }
  75
  76 static const char *
  77 list_callback(unsigned idx, int *highlight, void *data)
  78 {
  79         static char songname[MAX_SONG_LENGTH];
  80         mpdclient_t *c = (mpdclient_t *) data;
  81         mpd_Song *song;
  82
  83         if( (song=playlist_get_song(c, idx)) == NULL ) {
  84                 return NULL;
  85         }
  86
  87         if( c->song && song->id==c->song->id && !IS_STOPPED(c->status->state) ) {
  88                 *highlight = 1;
  89         }
  90         strfsong(songname, MAX_SONG_LENGTH, LIST_FORMAT, song);
  91         return songname;
  92 }
  93
  94 static int
  95 center_playing_item(mpdclient_t *c)
  96 {
  97         unsigned length = c->playlist.list->len;
  98         unsigned offset = lw->selected - lw->start;
  99         int idx;
 100
 101         if (!lw || !c->song || length<lw->rows ||
 102             IS_STOPPED(c->status->state))
 103                 return 0;
 104
 105         /* try to center the song that are playing */
 106         idx = playlist_get_index(c, c->song);
 107         D("Autocenter song id:%d pos:%d index:%d\n", c->song->id,c->song->pos,idx);
 108         if (idx < 0)
 109                 return 0;
 110
 111         list_window_center(lw, length, idx);
 112
 113         /* make sure the cursor is in the window */
 114         lw->selected = lw->start+offset;
 115         list_window_check_selected(lw, length);
 116
 117         return 0;
 118 }
 119
 120 static void
 121 save_pre_completion_cb(GCompletion *gcmp, mpd_unused gchar *line, void *data)
 122 {
 123         completion_callback_data_t *tmp = (completion_callback_data_t *)data;
 124         GList **list = tmp->list;
 125         mpdclient_t *c = tmp->c;
 126
 127         if( *list == NULL ) {
 128                 /* create completion list */
 129                 *list = gcmp_list_from_path(c, "", NULL, GCMP_TYPE_PLAYLIST);
 130                 g_completion_add_items(gcmp, *list);
 131         }
 132 }
 133
 134 static void
 135 save_post_completion_cb(mpd_unused GCompletion *gcmp, mpd_unused gchar *line,
 136                         GList *items, void *data)
 137 {
 138         completion_callback_data_t *tmp = (completion_callback_data_t *)data;
 139         screen_t *screen = tmp->screen;
 140
 141         if( g_list_length(items)>=1 ) {
 142                 screen_display_completion_list(screen, items);
 143                 lw->clear = 1;
 144                 lw->repaint = 1;
 145         }
 146 }
 147
 148 int
 149 playlist_save(screen_t *screen, mpdclient_t *c, char *name, char *defaultname)
 150 {
 151   gchar *filename;
 152   gint error;
 153   GCompletion *gcmp;
 154   GList *list = NULL;
 155   completion_callback_data_t data;
 156
 157   if( name==NULL )
 158     {
 159       /* initialize completion support */
 160       gcmp = g_completion_new(NULL);
 161       g_completion_set_compare(gcmp, strncmp);
 162       data.list = &list;
 163       data.dir_list = NULL;
 164       data.screen = screen;
 165       data.c = c;
 166       wrln_completion_callback_data = &data;
 167       wrln_pre_completion_callback = save_pre_completion_cb;
 168       wrln_post_completion_callback = save_post_completion_cb;
 169
 170
 171       /* query the user for a filename */
 172       filename = screen_readln(screen->status_window.w,
 173                                _("Save playlist as: "),
 174                                defaultname,
 175                                NULL,
 176                                gcmp);
 177
 178       /* destroy completion support */
 179       wrln_completion_callback_data = NULL;
 180       wrln_pre_completion_callback = NULL;
 181       wrln_post_completion_callback = NULL;
 182       g_completion_free(gcmp);
 183       list = string_list_free(list);
 184       if( filename )
 185         filename=g_strstrip(filename);
 186     }
 187   else
 188     {
 189       filename=g_strdup(name);
 190     }
 191   if( filename==NULL || filename[0]=='\0' )
 192     return -1;
 193   /* send save command to mpd */
 194   D("Saving playlist as \'%s \'...\n", filename);
 195   if( (error=mpdclient_cmd_save_playlist(c, filename)) )
 196     {
 197       gint code = GET_ACK_ERROR_CODE(error);
 198
 199       if( code == MPD_ACK_ERROR_EXIST )
 200         {
 201           char *buf;
 202           int key;
 203
 204           buf=g_strdup_printf(_("Replace %s [%s/%s] ? "), filename, YES, NO);
 205           key = tolower(screen_getch(screen->status_window.w, buf));
 206           g_free(buf);
 207           if( key == YES[0] )
 208             {
 209               if( mpdclient_cmd_delete_playlist(c, filename) )
 210                 {
 211                   g_free(filename);
 212                   return -1;
 213                 }
 214               error = playlist_save(screen, c, filename, NULL);
 215               g_free(filename);
 216               return error;
 217             }
 218           screen_status_printf(_("Aborted!"));
 219         }
 220       g_free(filename);
 221       return -1;
 222     }
 223   /* success */
 224   screen_status_printf(_("Saved %s"), filename);
 225   g_free(filename);
 226   return 0;
 227 }
 228
 229 static void add_dir(GCompletion *gcmp, gchar *dir, GList **dir_list,
 230                     GList **list, mpdclient_t *c)
 231 {
 232   g_completion_remove_items(gcmp, *list);
 233   *list = string_list_remove(*list, dir);
 234   *list = gcmp_list_from_path(c, dir, *list, GCMP_TYPE_RFILE);
 235   g_completion_add_items(gcmp, *list);
 236   *dir_list = g_list_append(*dir_list, g_strdup(dir));
 237 }
 238
 239 static void add_pre_completion_cb(GCompletion *gcmp, gchar *line, void *data)
 240 {
 241   completion_callback_data_t *tmp = (completion_callback_data_t *)data;
 242   GList **dir_list = tmp->dir_list;
 243   GList **list = tmp->list;
 244   mpdclient_t *c = tmp->c;
 245
 246   D("pre_completion()...\n");
 247   if( *list == NULL )
 248     {
 249       /* create initial list */
 250       *list = gcmp_list_from_path(c, "", NULL, GCMP_TYPE_RFILE);
 251       g_completion_add_items(gcmp, *list);
 252     }
 253   else 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(gcmp, line, dir_list, list, c);
 258     }
 259 }
 260
 261 static void add_post_completion_cb(GCompletion *gcmp, gchar *line,
 262                                    GList *items, void *data)
 263 {
 264   completion_callback_data_t *tmp = (completion_callback_data_t *)data;
 265   GList **dir_list = tmp->dir_list;
 266   GList **list = tmp->list;
 267   mpdclient_t *c = tmp->c;
 268   screen_t *screen = tmp->screen;
 269
 270   D("post_completion()...\n");
 271   if( g_list_length(items)>=1 )
 272     {
 273       screen_display_completion_list(screen, items);
 274       lw->clear = 1;
 275       lw->repaint = 1;
 276     }
 277
 278   if( line && line[0] && line[strlen(line)-1]=='/' &&
 279       string_list_find(*dir_list, line) == NULL )
 280     {
 281       /* add directory content to list */
 282       add_dir(gcmp, line, dir_list, list, c);
 283     }
 284 }
 285
 286 static int
 287 handle_add_to_playlist(screen_t *screen, mpdclient_t *c)
 288 {
 289   gchar *path;
 290   GCompletion *gcmp;
 291   GList *list = NULL;
 292   GList *dir_list = NULL;
 293   completion_callback_data_t data;
 294
 295   /* initialize completion support */
 296   gcmp = g_completion_new(NULL);
 297   g_completion_set_compare(gcmp, strncmp);
 298   data.list = &list;
 299   data.dir_list = &dir_list;
 300   data.screen = screen;
 301   data.c = c;
 302   wrln_completion_callback_data = &data;
 303   wrln_pre_completion_callback = add_pre_completion_cb;
 304   wrln_post_completion_callback = add_post_completion_cb;
 305   /* get path */
 306   path = screen_readln(screen->status_window.w,
 307                        _("Add: "),
 308                        NULL,
 309                        NULL,
 310                        gcmp);
 311
 312   /* destroy completion data */
 313   wrln_completion_callback_data = NULL;
 314   wrln_pre_completion_callback = NULL;
 315   wrln_post_completion_callback = NULL;
 316   g_completion_free(gcmp);
 317   string_list_free(list);
 318   string_list_free(dir_list);
 319
 320   /* add the path to the playlist */
 321   if( path && path[0] )
 322     mpdclient_cmd_add_path(c, path);
 323
 324   return 0;
 325 }
 326
 327 static void
 328 play_init(WINDOW *w, int cols, int rows)
 329 {
 330         lw = list_window_init(w, cols, rows);
 331 }
 332
 333 static void
 334 play_open(mpd_unused screen_t *screen, mpdclient_t *c)
 335 {
 336         static gboolean install_cb = TRUE;
 337
 338         if (install_cb) {
 339                 mpdclient_install_playlist_callback(c, playlist_changed_callback);
 340                 install_cb = FALSE;
 341         }
 342 }
 343
 344 static void
 345 play_resize(int cols, int rows)
 346 {
 347         lw->cols = cols;
 348         lw->rows = rows;
 349 }
 350
 351
 352 static void
 353 play_exit(void)
 354 {
 355         list_window_free(lw);
 356 }
 357
 358 static const char *
 359 play_title(char *str, size_t size)
 360 {
 361         if( strcmp(options.host, "localhost") == 0 )
 362                 return _("Playlist");
 363
 364         g_snprintf(str, size, _("Playlist on %s"), options.host);
 365         return str;
 366 }
 367
 368 static void
 369 play_paint(mpd_unused screen_t *screen, mpdclient_t *c)
 370 {
 371         lw->clear = 1;
 372
 373         list_window_paint(lw, list_callback, (void *) c);
 374         wnoutrefresh(lw->w);
 375 }
 376
 377 static void
 378 play_update(screen_t *screen, mpdclient_t *c)
 379 {
 380         /* hide the cursor when mpd are playing and the user are inactive */
 381         if( options.hide_cursor>0 && c->status->state == MPD_STATUS_STATE_PLAY &&
 382             time(NULL)-screen->input_timestamp >= options.hide_cursor ) {
 383                 lw->flags |= LW_HIDE_CURSOR;
 384         } else {
 385                 lw->flags &= ~LW_HIDE_CURSOR;
 386         }
 387
 388         /* center the cursor */
 389         if( options.auto_center ) {
 390                 static int prev_song_id = 0;
 391
 392                 if( c->song && prev_song_id != c->song->id ) {
 393                         center_playing_item(c);
 394                         prev_song_id = c->song->id;
 395                 }
 396         }
 397
 398         if( c->playlist.updated ) {
 399                 if (lw->selected >= c->playlist.list->len)
 400                         lw->selected = c->playlist.list->len - 1;
 401                 if (lw->start >= c->playlist.list->len)
 402                         list_window_reset(lw);
 403
 404                 play_paint(screen, c);
 405                 c->playlist.updated = FALSE;
 406         } else if( lw->repaint || 1) {
 407                 list_window_paint(lw, list_callback, (void *) c);
 408                 wnoutrefresh(lw->w);
 409                 lw->repaint = 0;
 410         }
 411 }
 412
 413 #ifdef HAVE_GETMOUSE
 414 static int
 415 handle_mouse_event(mpd_unused screen_t *screen, mpdclient_t *c)
 416 {
 417         int row;
 418         unsigned selected;
 419         unsigned long bstate;
 420
 421         if (screen_get_mouse_event(c, lw, c->playlist.list->len, &bstate, &row))
 422                 return 1;
 423
 424         if (bstate & BUTTON1_DOUBLE_CLICKED) {
 425                 /* stop */
 426                 screen_cmd(c, CMD_STOP);
 427                 return 1;
 428         }
 429
 430         selected = lw->start + row;
 431
 432         if (bstate & BUTTON1_CLICKED) {
 433                 /* play */
 434                 if (lw->start + row < c->playlist.list->len)
 435                         mpdclient_cmd_play(c, lw->start + row);
 436         } else if (bstate & BUTTON3_CLICKED) {
 437                 /* delete */
 438                 if (selected == lw->selected)
 439                         mpdclient_cmd_delete(c, lw->selected);
 440         }
 441
 442         lw->selected = selected;
 443         list_window_check_selected(lw, c->playlist.list->len);
 444
 445         return 1;
 446 }
 447 #else
 448 #define handle_mouse_event(s,c) (0)
 449 #endif
 450
 451 static int
 452 play_cmd(screen_t *screen, mpdclient_t *c, command_t cmd)
 453 {
 454         switch(cmd) {
 455         case CMD_PLAY:
 456                 mpdclient_cmd_play(c, lw->selected);
 457                 return 1;
 458         case CMD_DELETE:
 459                 mpdclient_cmd_delete(c, lw->selected);
 460                 return 1;
 461         case CMD_SAVE_PLAYLIST:
 462                 playlist_save(screen, c, NULL, NULL);
 463                 return 1;
 464         case CMD_ADD:
 465                 handle_add_to_playlist(screen, c);
 466                 return 1;
 467         case CMD_SCREEN_UPDATE:
 468                 screen->painted = 0;
 469                 lw->clear = 1;
 470                 lw->repaint = 1;
 471                 center_playing_item(c);
 472                 return 1;
 473         case CMD_LIST_MOVE_UP:
 474                 mpdclient_cmd_move(c, lw->selected, lw->selected-1);
 475                 return 1;
 476         case CMD_LIST_MOVE_DOWN:
 477                 mpdclient_cmd_move(c, lw->selected, lw->selected+1);
 478                 return 1;
 479         case CMD_LIST_FIND:
 480         case CMD_LIST_RFIND:
 481         case CMD_LIST_FIND_NEXT:
 482         case CMD_LIST_RFIND_NEXT:
 483                 return screen_find(screen,
 484                                    lw, c->playlist.list->len,
 485                                    cmd, list_callback, (void *) c);
 486         case CMD_MOUSE_EVENT:
 487                 return handle_mouse_event(screen,c);
 488         default:
 489                 break;
 490         }
 491         return list_window_cmd(lw, c->playlist.list->len, cmd);
 492 }
 493
 494 const struct screen_functions screen_playlist = {
 495         .init = play_init,
 496         .exit = play_exit,
 497         .open = play_open,
 498         .close = NULL,
 499         .resize = play_resize,
 500         .paint = play_paint,
 501         .update = play_update,
 502         .cmd = play_cmd,
 503         .get_title = play_title,
 504 };