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         *highlight = 0;
  84         if( (song=playlist_get_song(c, idx)) == NULL ) {
  85                 return NULL;
  86         }
  87
  88         if( c->song && song->id==c->song->id && !IS_STOPPED(c->status->state) ) {
  89                 *highlight = 1;
  90         }
  91         strfsong(songname, MAX_SONG_LENGTH, LIST_FORMAT, song);
  92         return songname;
  93 }
  94
  95 static int
  96 center_playing_item(mpdclient_t *c)
  97 {
  98         unsigned length = c->playlist.list->len;
  99         unsigned offset = lw->selected - lw->start;
 100         int idx;
 101
 102         if (!lw || !c->song || length<lw->rows ||
 103             IS_STOPPED(c->status->state))
 104                 return 0;
 105
 106         /* try to center the song that are playing */
 107         idx = playlist_get_index(c, c->song);
 108         D("Autocenter song id:%d pos:%d index:%d\n", c->song->id,c->song->pos,idx);
 109         if (idx < 0)
 110                 return 0;
 111
 112         list_window_center(lw, length, idx);
 113
 114         /* make sure the cursor is in the window */
 115         lw->selected = lw->start+offset;
 116         list_window_check_selected(lw, length);
 117
 118         return 0;
 119 }
 120
 121 static void
 122 save_pre_completion_cb(GCompletion *gcmp, mpd_unused gchar *line, void *data)
 123 {
 124         completion_callback_data_t *tmp = (completion_callback_data_t *)data;
 125         GList **list = tmp->list;
 126         mpdclient_t *c = tmp->c;
 127
 128         if( *list == NULL ) {
 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 static void
 136 save_post_completion_cb(mpd_unused GCompletion *gcmp, mpd_unused gchar *line,
 137                         GList *items, void *data)
 138 {
 139         completion_callback_data_t *tmp = (completion_callback_data_t *)data;
 140         screen_t *screen = tmp->screen;
 141
 142         if( g_list_length(items)>=1 ) {
 143                 screen_display_completion_list(screen, items);
 144                 lw->clear = 1;
 145                 lw->repaint = 1;
 146         }
 147 }
 148
 149 int
 150 playlist_save(screen_t *screen, mpdclient_t *c, char *name, char *defaultname)
 151 {
 152   gchar *filename;
 153   gint error;
 154   GCompletion *gcmp;
 155   GList *list = NULL;
 156   completion_callback_data_t data;
 157
 158   if( name==NULL )
 159     {
 160       /* initialize completion support */
 161       gcmp = g_completion_new(NULL);
 162       g_completion_set_compare(gcmp, strncmp);
 163       data.list = &list;
 164       data.dir_list = NULL;
 165       data.screen = screen;
 166       data.c = c;
 167       wrln_completion_callback_data = &data;
 168       wrln_pre_completion_callback = save_pre_completion_cb;
 169       wrln_post_completion_callback = save_post_completion_cb;
 170
 171
 172       /* query the user for a filename */
 173       filename = screen_readln(screen->status_window.w,
 174                                _("Save playlist as: "),
 175                                defaultname,
 176                                NULL,
 177                                gcmp);
 178
 179       /* destroy completion support */
 180       wrln_completion_callback_data = NULL;
 181       wrln_pre_completion_callback = NULL;
 182       wrln_post_completion_callback = NULL;
 183       g_completion_free(gcmp);
 184       list = string_list_free(list);
 185       if( filename )
 186         filename=g_strstrip(filename);
 187     }
 188   else
 189     {
 190       filename=g_strdup(name);
 191     }
 192   if( filename==NULL || filename[0]=='\0' )
 193     return -1;
 194   /* send save command to mpd */
 195   D("Saving playlist as \'%s \'...\n", filename);
 196   if( (error=mpdclient_cmd_save_playlist(c, filename)) )
 197     {
 198       gint code = GET_ACK_ERROR_CODE(error);
 199
 200       if( code == MPD_ACK_ERROR_EXIST )
 201         {
 202           char *buf;
 203           int key;
 204
 205           buf=g_strdup_printf(_("Replace %s [%s/%s] ? "), filename, YES, NO);
 206           key = tolower(screen_getch(screen->status_window.w, buf));
 207           g_free(buf);
 208           if( key == YES[0] )
 209             {
 210               if( mpdclient_cmd_delete_playlist(c, filename) )
 211                 {
 212                   g_free(filename);
 213                   return -1;
 214                 }
 215               error = playlist_save(screen, c, filename, NULL);
 216               g_free(filename);
 217               return error;
 218             }
 219           screen_status_printf(_("Aborted!"));
 220         }
 221       g_free(filename);
 222       return -1;
 223     }
 224   /* success */
 225   screen_status_printf(_("Saved %s"), filename);
 226   g_free(filename);
 227   return 0;
 228 }
 229
 230 static void add_dir(GCompletion *gcmp, gchar *dir, GList **dir_list,
 231                     GList **list, mpdclient_t *c)
 232 {
 233   g_completion_remove_items(gcmp, *list);
 234   *list = string_list_remove(*list, dir);
 235   *list = gcmp_list_from_path(c, dir, *list, GCMP_TYPE_RFILE);
 236   g_completion_add_items(gcmp, *list);
 237   *dir_list = g_list_append(*dir_list, g_strdup(dir));
 238 }
 239
 240 static void add_pre_completion_cb(GCompletion *gcmp, gchar *line, void *data)
 241 {
 242   completion_callback_data_t *tmp = (completion_callback_data_t *)data;
 243   GList **dir_list = tmp->dir_list;
 244   GList **list = tmp->list;
 245   mpdclient_t *c = tmp->c;
 246
 247   D("pre_completion()...\n");
 248   if( *list == NULL )
 249     {
 250       /* create initial list */
 251       *list = gcmp_list_from_path(c, "", NULL, GCMP_TYPE_RFILE);
 252       g_completion_add_items(gcmp, *list);
 253     }
 254   else 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(gcmp, line, dir_list, list, c);
 259     }
 260 }
 261
 262 static void add_post_completion_cb(GCompletion *gcmp, gchar *line,
 263                                    GList *items, void *data)
 264 {
 265   completion_callback_data_t *tmp = (completion_callback_data_t *)data;
 266   GList **dir_list = tmp->dir_list;
 267   GList **list = tmp->list;
 268   mpdclient_t *c = tmp->c;
 269   screen_t *screen = tmp->screen;
 270
 271   D("post_completion()...\n");
 272   if( g_list_length(items)>=1 )
 273     {
 274       screen_display_completion_list(screen, items);
 275       lw->clear = 1;
 276       lw->repaint = 1;
 277     }
 278
 279   if( line && line[0] && line[strlen(line)-1]=='/' &&
 280       string_list_find(*dir_list, line) == NULL )
 281     {
 282       /* add directory content to list */
 283       add_dir(gcmp, line, dir_list, list, c);
 284     }
 285 }
 286
 287 static int
 288 handle_add_to_playlist(screen_t *screen, mpdclient_t *c)
 289 {
 290   gchar *path;
 291   GCompletion *gcmp;
 292   GList *list = NULL;
 293   GList *dir_list = NULL;
 294   completion_callback_data_t data;
 295
 296   /* initialize completion support */
 297   gcmp = g_completion_new(NULL);
 298   g_completion_set_compare(gcmp, strncmp);
 299   data.list = &list;
 300   data.dir_list = &dir_list;
 301   data.screen = screen;
 302   data.c = c;
 303   wrln_completion_callback_data = &data;
 304   wrln_pre_completion_callback = add_pre_completion_cb;
 305   wrln_post_completion_callback = add_post_completion_cb;
 306   /* get path */
 307   path = screen_readln(screen->status_window.w,
 308                        _("Add: "),
 309                        NULL,
 310                        NULL,
 311                        gcmp);
 312
 313   /* destroy completion data */
 314   wrln_completion_callback_data = NULL;
 315   wrln_pre_completion_callback = NULL;
 316   wrln_post_completion_callback = NULL;
 317   g_completion_free(gcmp);
 318   string_list_free(list);
 319   string_list_free(dir_list);
 320
 321   /* add the path to the playlist */
 322   if( path && path[0] )
 323     mpdclient_cmd_add_path(c, path);
 324
 325   return 0;
 326 }
 327
 328 static void
 329 play_init(WINDOW *w, int cols, int rows)
 330 {
 331         lw = list_window_init(w, cols, rows);
 332 }
 333
 334 static void
 335 play_open(mpd_unused screen_t *screen, mpdclient_t *c)
 336 {
 337         static gboolean install_cb = TRUE;
 338
 339         if (install_cb) {
 340                 mpdclient_install_playlist_callback(c, playlist_changed_callback);
 341                 install_cb = FALSE;
 342         }
 343 }
 344
 345 static void
 346 play_resize(int cols, int rows)
 347 {
 348         lw->cols = cols;
 349         lw->rows = rows;
 350 }
 351
 352
 353 static void
 354 play_exit(void)
 355 {
 356         list_window_free(lw);
 357 }
 358
 359 static const char *
 360 play_title(char *str, size_t size)
 361 {
 362         if( strcmp(options.host, "localhost") == 0 )
 363                 return _("Playlist");
 364
 365         g_snprintf(str, size, _("Playlist on %s"), options.host);
 366         return str;
 367 }
 368
 369 static void
 370 play_paint(mpd_unused screen_t *screen, mpdclient_t *c)
 371 {
 372         lw->clear = 1;
 373
 374         list_window_paint(lw, list_callback, (void *) c);
 375         wnoutrefresh(lw->w);
 376 }
 377
 378 static void
 379 play_update(screen_t *screen, mpdclient_t *c)
 380 {
 381         /* hide the cursor when mpd are playing and the user are inactive */
 382         if( options.hide_cursor>0 && c->status->state == MPD_STATUS_STATE_PLAY &&
 383             time(NULL)-screen->input_timestamp >= options.hide_cursor ) {
 384                 lw->flags |= LW_HIDE_CURSOR;
 385         } else {
 386                 lw->flags &= ~LW_HIDE_CURSOR;
 387         }
 388
 389         /* center the cursor */
 390         if( options.auto_center ) {
 391                 static int prev_song_id = 0;
 392
 393                 if( c->song && prev_song_id != c->song->id ) {
 394                         center_playing_item(c);
 395                         prev_song_id = c->song->id;
 396                 }
 397         }
 398
 399         if( c->playlist.updated ) {
 400                 if (lw->selected >= c->playlist.list->len)
 401                         lw->selected = c->playlist.list->len - 1;
 402                 if (lw->start >= c->playlist.list->len)
 403                         list_window_reset(lw);
 404
 405                 play_paint(screen, c);
 406                 c->playlist.updated = FALSE;
 407         } else if( lw->repaint || 1) {
 408                 list_window_paint(lw, list_callback, (void *) c);
 409                 wnoutrefresh(lw->w);
 410                 lw->repaint = 0;
 411         }
 412 }
 413
 414 #ifdef HAVE_GETMOUSE
 415 static int
 416 handle_mouse_event(mpd_unused screen_t *screen, mpdclient_t *c)
 417 {
 418         int row;
 419         unsigned selected;
 420         unsigned long bstate;
 421
 422         if (screen_get_mouse_event(c, lw, c->playlist.list->len, &bstate, &row))
 423                 return 1;
 424
 425         if (bstate & BUTTON1_DOUBLE_CLICKED) {
 426                 /* stop */
 427                 screen_cmd(c, CMD_STOP);
 428                 return 1;
 429         }
 430
 431         selected = lw->start + row;
 432
 433         if (bstate & BUTTON1_CLICKED) {
 434                 /* play */
 435                 if (lw->start + row < c->playlist.list->len)
 436                         mpdclient_cmd_play(c, lw->start + row);
 437         } else if (bstate & BUTTON3_CLICKED) {
 438                 /* delete */
 439                 if (selected == lw->selected)
 440                         mpdclient_cmd_delete(c, lw->selected);
 441         }
 442
 443         lw->selected = selected;
 444         list_window_check_selected(lw, c->playlist.list->len);
 445
 446         return 1;
 447 }
 448 #else
 449 #define handle_mouse_event(s,c) (0)
 450 #endif
 451
 452 static int
 453 play_cmd(screen_t *screen, mpdclient_t *c, command_t cmd)
 454 {
 455         switch(cmd) {
 456         case CMD_PLAY:
 457                 mpdclient_cmd_play(c, lw->selected);
 458                 return 1;
 459         case CMD_DELETE:
 460                 mpdclient_cmd_delete(c, lw->selected);
 461                 return 1;
 462         case CMD_SAVE_PLAYLIST:
 463                 playlist_save(screen, c, NULL, NULL);
 464                 return 1;
 465         case CMD_ADD:
 466                 handle_add_to_playlist(screen, c);
 467                 return 1;
 468         case CMD_SCREEN_UPDATE:
 469                 screen->painted = 0;
 470                 lw->clear = 1;
 471                 lw->repaint = 1;
 472                 center_playing_item(c);
 473                 return 1;
 474         case CMD_LIST_MOVE_UP:
 475                 mpdclient_cmd_move(c, lw->selected, lw->selected-1);
 476                 return 1;
 477         case CMD_LIST_MOVE_DOWN:
 478                 mpdclient_cmd_move(c, lw->selected, lw->selected+1);
 479                 return 1;
 480         case CMD_LIST_FIND:
 481         case CMD_LIST_RFIND:
 482         case CMD_LIST_FIND_NEXT:
 483         case CMD_LIST_RFIND_NEXT:
 484                 return screen_find(screen,
 485                                    lw, c->playlist.list->len,
 486                                    cmd, list_callback, (void *) c);
 487         case CMD_MOUSE_EVENT:
 488                 return handle_mouse_event(screen,c);
 489         default:
 490                 break;
 491         }
 492         return list_window_cmd(lw, c->playlist.list->len, cmd);
 493 }
 494
 495 const struct screen_functions screen_playlist = {
 496         .init = play_init,
 497         .exit = play_exit,
 498         .open = play_open,
 499         .close = NULL,
 500         .resize = play_resize,
 501         .paint = play_paint,
 502         .update = play_update,
 503         .cmd = play_cmd,
 504         .get_title = play_title,
 505 };