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 GTime input_timestamp;
  54 static list_window_t *lw = NULL;
  55 static long long playlist_id;
  56
  57 static void
  58 playlist_changed_callback(mpdclient_t *c, int event, gpointer data)
  59 {
  60         D("screen_play.c> playlist_callback() [%d]\n", event);
  61         switch(event) {
  62         case PLAYLIST_EVENT_DELETE:
  63                 break;
  64         case PLAYLIST_EVENT_MOVE:
  65                 lw->selected = *((int *) data);
  66                 if( lw->selected<lw->start )
  67                         lw->start--;
  68                 break;
  69         default:
  70                 break;
  71         }
  72         /* make shure the playlist is repainted */
  73         lw->clear = 1;
  74         list_window_check_selected(lw, c->playlist.list->len);
  75 }
  76
  77 static const char *
  78 list_callback(unsigned idx, int *highlight, void *data)
  79 {
  80         static char songname[MAX_SONG_LENGTH];
  81         mpdclient_t *c = (mpdclient_t *) data;
  82         mpd_Song *song;
  83
  84         if (idx >= playlist_length(&c->playlist))
  85                 return NULL;
  86
  87         song = playlist_get(&c->playlist, idx);
  88
  89         if (c->song != NULL && song->id == c->song->id &&
  90             c->status != NULL && !IS_STOPPED(c->status->state))
  91                 *highlight = 1;
  92
  93         strfsong(songname, MAX_SONG_LENGTH, LIST_FORMAT, song);
  94         return songname;
  95 }
  96
  97 static void
  98 center_playing_item(mpdclient_t *c)
  99 {
 100         unsigned length = c->playlist.list->len;
 101         unsigned offset = lw->selected - lw->start;
 102         int idx;
 103
 104         if (!c->song || length < lw->rows ||
 105             c->status == NULL || IS_STOPPED(c->status->state))
 106                 return;
 107
 108         /* try to center the song that are playing */
 109         idx = playlist_get_index(c, c->song);
 110         D("Autocenter song id:%d pos:%d index:%d\n", c->song->id,c->song->pos,idx);
 111         if (idx < 0)
 112                 return;
 113
 114         list_window_center(lw, length, idx);
 115
 116         /* make sure the cursor is in the window */
 117         lw->selected = lw->start+offset;
 118         list_window_check_selected(lw, length);
 119
 120         return;
 121 }
 122
 123 static void
 124 save_pre_completion_cb(GCompletion *gcmp, mpd_unused gchar *line, void *data)
 125 {
 126         completion_callback_data_t *tmp = (completion_callback_data_t *)data;
 127         GList **list = tmp->list;
 128         mpdclient_t *c = tmp->c;
 129
 130         if( *list == NULL ) {
 131                 /* create completion list */
 132                 *list = gcmp_list_from_path(c, "", NULL, GCMP_TYPE_PLAYLIST);
 133                 g_completion_add_items(gcmp, *list);
 134         }
 135 }
 136
 137 static void
 138 save_post_completion_cb(mpd_unused GCompletion *gcmp, mpd_unused gchar *line,
 139                         GList *items, void *data)
 140 {
 141         completion_callback_data_t *tmp = (completion_callback_data_t *)data;
 142         screen_t *screen = tmp->screen;
 143
 144         if( g_list_length(items)>=1 ) {
 145                 screen_display_completion_list(screen, items);
 146                 lw->clear = 1;
 147         }
 148 }
 149
 150 int
 151 playlist_save(screen_t *screen, mpdclient_t *c, char *name, char *defaultname)
 152 {
 153   gchar *filename;
 154   gint error;
 155   GCompletion *gcmp;
 156   GList *list = NULL;
 157   completion_callback_data_t data;
 158
 159   if( name==NULL )
 160     {
 161       /* initialize completion support */
 162       gcmp = g_completion_new(NULL);
 163       g_completion_set_compare(gcmp, strncmp);
 164       data.list = &list;
 165       data.dir_list = NULL;
 166       data.screen = screen;
 167       data.c = c;
 168       wrln_completion_callback_data = &data;
 169       wrln_pre_completion_callback = save_pre_completion_cb;
 170       wrln_post_completion_callback = save_post_completion_cb;
 171
 172
 173       /* query the user for a filename */
 174       filename = screen_readln(screen->status_window.w,
 175                                _("Save playlist as: "),
 176                                defaultname,
 177                                NULL,
 178                                gcmp);
 179
 180       /* destroy completion support */
 181       wrln_completion_callback_data = NULL;
 182       wrln_pre_completion_callback = NULL;
 183       wrln_post_completion_callback = NULL;
 184       g_completion_free(gcmp);
 185       list = string_list_free(list);
 186       if( filename )
 187         filename=g_strstrip(filename);
 188     }
 189   else
 190     {
 191       filename=g_strdup(name);
 192     }
 193   if( filename==NULL || filename[0]=='\0' )
 194     return -1;
 195   /* send save command to mpd */
 196   D("Saving playlist as \'%s \'...\n", filename);
 197   if( (error=mpdclient_cmd_save_playlist(c, filename)) )
 198     {
 199       gint code = GET_ACK_ERROR_CODE(error);
 200
 201       if( code == MPD_ACK_ERROR_EXIST )
 202         {
 203           char *buf;
 204           int key;
 205
 206           buf=g_strdup_printf(_("Replace %s [%s/%s] ? "), filename, YES, NO);
 207           key = tolower(screen_getch(screen->status_window.w, buf));
 208           g_free(buf);
 209           if( key == YES[0] )
 210             {
 211               if( mpdclient_cmd_delete_playlist(c, filename) )
 212                 {
 213                   g_free(filename);
 214                   return -1;
 215                 }
 216               error = playlist_save(screen, c, filename, NULL);
 217               g_free(filename);
 218               return error;
 219             }
 220           screen_status_printf(_("Aborted!"));
 221         }
 222       g_free(filename);
 223       return -1;
 224     }
 225   /* success */
 226   screen_status_printf(_("Saved %s"), filename);
 227   g_free(filename);
 228   return 0;
 229 }
 230
 231 static void add_dir(GCompletion *gcmp, gchar *dir, GList **dir_list,
 232                     GList **list, mpdclient_t *c)
 233 {
 234   g_completion_remove_items(gcmp, *list);
 235   *list = string_list_remove(*list, dir);
 236   *list = gcmp_list_from_path(c, dir, *list, GCMP_TYPE_RFILE);
 237   g_completion_add_items(gcmp, *list);
 238   *dir_list = g_list_append(*dir_list, g_strdup(dir));
 239 }
 240
 241 static void add_pre_completion_cb(GCompletion *gcmp, gchar *line, void *data)
 242 {
 243   completion_callback_data_t *tmp = (completion_callback_data_t *)data;
 244   GList **dir_list = tmp->dir_list;
 245   GList **list = tmp->list;
 246   mpdclient_t *c = tmp->c;
 247
 248   D("pre_completion()...\n");
 249   if( *list == NULL )
 250     {
 251       /* create initial list */
 252       *list = gcmp_list_from_path(c, "", NULL, GCMP_TYPE_RFILE);
 253       g_completion_add_items(gcmp, *list);
 254     }
 255   else if( line && line[0] && line[strlen(line)-1]=='/' &&
 256            string_list_find(*dir_list, line) == NULL )
 257     {
 258       /* add directory content to list */
 259       add_dir(gcmp, line, dir_list, list, c);
 260     }
 261 }
 262
 263 static void add_post_completion_cb(GCompletion *gcmp, gchar *line,
 264                                    GList *items, void *data)
 265 {
 266   completion_callback_data_t *tmp = (completion_callback_data_t *)data;
 267   GList **dir_list = tmp->dir_list;
 268   GList **list = tmp->list;
 269   mpdclient_t *c = tmp->c;
 270   screen_t *screen = tmp->screen;
 271
 272   D("post_completion()...\n");
 273   if( g_list_length(items)>=1 )
 274     {
 275       screen_display_completion_list(screen, items);
 276       lw->clear = 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         input_timestamp = time(NULL);
 340
 341         if (install_cb) {
 342                 mpdclient_install_playlist_callback(c, playlist_changed_callback);
 343                 install_cb = FALSE;
 344         }
 345 }
 346
 347 static void
 348 play_resize(int cols, int rows)
 349 {
 350         lw->cols = cols;
 351         lw->rows = rows;
 352 }
 353
 354
 355 static void
 356 play_exit(void)
 357 {
 358         list_window_free(lw);
 359 }
 360
 361 static const char *
 362 play_title(char *str, size_t size)
 363 {
 364         if( strcmp(options.host, "localhost") == 0 )
 365                 return _("Playlist");
 366
 367         g_snprintf(str, size, _("Playlist on %s"), options.host);
 368         return str;
 369 }
 370
 371 static void
 372 play_paint(mpd_unused screen_t *screen, mpdclient_t *c)
 373 {
 374         lw->clear = 1;
 375
 376         list_window_paint(lw, list_callback, (void *) c);
 377         wnoutrefresh(lw->w);
 378 }
 379
 380 static void
 381 play_update(screen_t *screen, mpdclient_t *c)
 382 {
 383         /* hide the cursor when mpd are playing and the user are inactive */
 384         if (options.hide_cursor > 0 &&
 385             (c->status != NULL && c->status->state == MPD_STATUS_STATE_PLAY) &&
 386             time(NULL) - input_timestamp >= options.hide_cursor ) {
 387                 lw->flags |= LW_HIDE_CURSOR;
 388         } else {
 389                 lw->flags &= ~LW_HIDE_CURSOR;
 390         }
 391
 392         /* center the cursor */
 393         if( options.auto_center ) {
 394                 static int prev_song_id = 0;
 395
 396                 if( c->song && prev_song_id != c->song->id ) {
 397                         center_playing_item(c);
 398                         prev_song_id = c->song->id;
 399                 }
 400         }
 401
 402         if (c->playlist.id != playlist_id) {
 403                 if (lw->selected >= c->playlist.list->len)
 404                         lw->selected = c->playlist.list->len - 1;
 405                 if (lw->start >= c->playlist.list->len)
 406                         list_window_reset(lw);
 407
 408                 play_paint(screen, c);
 409                 playlist_id = c->playlist.id;
 410         } else {
 411                 list_window_paint(lw, list_callback, (void *) c);
 412                 wnoutrefresh(lw->w);
 413         }
 414 }
 415
 416 #ifdef HAVE_GETMOUSE
 417 static int
 418 handle_mouse_event(mpd_unused screen_t *screen, mpdclient_t *c)
 419 {
 420         int row;
 421         unsigned selected;
 422         unsigned long bstate;
 423
 424         if (screen_get_mouse_event(c, &bstate, &row) ||
 425             list_window_mouse(lw, c->playlist.list->len, bstate, row))
 426                 return 1;
 427
 428         if (bstate & BUTTON1_DOUBLE_CLICKED) {
 429                 /* stop */
 430                 screen_cmd(c, CMD_STOP);
 431                 return 1;
 432         }
 433
 434         selected = lw->start + row;
 435
 436         if (bstate & BUTTON1_CLICKED) {
 437                 /* play */
 438                 if (lw->start + row < c->playlist.list->len)
 439                         mpdclient_cmd_play(c, lw->start + row);
 440         } else if (bstate & BUTTON3_CLICKED) {
 441                 /* delete */
 442                 if (selected == lw->selected)
 443                         mpdclient_cmd_delete(c, lw->selected);
 444         }
 445
 446         lw->selected = selected;
 447         list_window_check_selected(lw, c->playlist.list->len);
 448
 449         return 1;
 450 }
 451 #else
 452 #define handle_mouse_event(s,c) (0)
 453 #endif
 454
 455 static int
 456 play_cmd(screen_t *screen, mpdclient_t *c, command_t cmd)
 457 {
 458         input_timestamp = time(NULL);
 459
 460         switch(cmd) {
 461         case CMD_PLAY:
 462                 mpdclient_cmd_play(c, lw->selected);
 463                 return 1;
 464         case CMD_DELETE:
 465                 mpdclient_cmd_delete(c, lw->selected);
 466                 return 1;
 467         case CMD_SAVE_PLAYLIST:
 468                 playlist_save(screen, c, NULL, NULL);
 469                 return 1;
 470         case CMD_ADD:
 471                 handle_add_to_playlist(screen, c);
 472                 return 1;
 473         case CMD_SCREEN_UPDATE:
 474                 screen->painted = 0;
 475                 lw->clear = 1;
 476                 center_playing_item(c);
 477                 return 1;
 478         case CMD_LIST_MOVE_UP:
 479                 mpdclient_cmd_move(c, lw->selected, lw->selected-1);
 480                 return 1;
 481         case CMD_LIST_MOVE_DOWN:
 482                 mpdclient_cmd_move(c, lw->selected, lw->selected+1);
 483                 return 1;
 484         case CMD_LIST_FIND:
 485         case CMD_LIST_RFIND:
 486         case CMD_LIST_FIND_NEXT:
 487         case CMD_LIST_RFIND_NEXT:
 488                 return screen_find(screen,
 489                                    lw, c->playlist.list->len,
 490                                    cmd, list_callback, (void *) c);
 491         case CMD_MOUSE_EVENT:
 492                 return handle_mouse_event(screen,c);
 493         default:
 494                 break;
 495         }
 496         return list_window_cmd(lw, c->playlist.list->len, cmd);
 497 }
 498
 499 const struct screen_functions screen_playlist = {
 500         .init = play_init,
 501         .exit = play_exit,
 502         .open = play_open,
 503         .close = NULL,
 504         .resize = play_resize,
 505         .paint = play_paint,
 506         .update = play_update,
 507         .cmd = play_cmd,
 508         .get_title = play_title,
 509 };