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         idx -= (lw->rows / 2);
 110         if (idx + (int)lw->rows > (int)length)
 111                 idx = length - lw->rows;
 112         if (idx < 0)
 113                 idx = 0;
 114         lw->start = 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         lw->clear = 1;
 121         lw->repaint = 1;
 122
 123         return 0;
 124 }
 125
 126 static void
 127 save_pre_completion_cb(GCompletion *gcmp, mpd_unused gchar *line, void *data)
 128 {
 129         completion_callback_data_t *tmp = (completion_callback_data_t *)data;
 130         GList **list = tmp->list;
 131         mpdclient_t *c = tmp->c;
 132
 133         if( *list == NULL ) {
 134                 /* create completion list */
 135                 *list = gcmp_list_from_path(c, "", NULL, GCMP_TYPE_PLAYLIST);
 136                 g_completion_add_items(gcmp, *list);
 137         }
 138 }
 139
 140 static void
 141 save_post_completion_cb(mpd_unused GCompletion *gcmp, mpd_unused gchar *line,
 142                         GList *items, void *data)
 143 {
 144         completion_callback_data_t *tmp = (completion_callback_data_t *)data;
 145         screen_t *screen = tmp->screen;
 146
 147         if( g_list_length(items)>=1 ) {
 148                 screen_display_completion_list(screen, items);
 149                 lw->clear = 1;
 150                 lw->repaint = 1;
 151         }
 152 }
 153
 154 int
 155 playlist_save(screen_t *screen, mpdclient_t *c, char *name, char *defaultname)
 156 {
 157   gchar *filename;
 158   gint error;
 159   GCompletion *gcmp;
 160   GList *list = NULL;
 161   completion_callback_data_t data;
 162
 163   if( name==NULL )
 164     {
 165       /* initialize completion support */
 166       gcmp = g_completion_new(NULL);
 167       g_completion_set_compare(gcmp, strncmp);
 168       data.list = &list;
 169       data.dir_list = NULL;
 170       data.screen = screen;
 171       data.c = c;
 172       wrln_completion_callback_data = &data;
 173       wrln_pre_completion_callback = save_pre_completion_cb;
 174       wrln_post_completion_callback = save_post_completion_cb;
 175
 176
 177       /* query the user for a filename */
 178       filename = screen_readln(screen->status_window.w,
 179                                _("Save playlist as: "),
 180                                defaultname,
 181                                NULL,
 182                                gcmp);
 183
 184       /* destroy completion support */
 185       wrln_completion_callback_data = NULL;
 186       wrln_pre_completion_callback = NULL;
 187       wrln_post_completion_callback = NULL;
 188       g_completion_free(gcmp);
 189       list = string_list_free(list);
 190       if( filename )
 191         filename=g_strstrip(filename);
 192     }
 193   else
 194     {
 195       filename=g_strdup(name);
 196     }
 197   if( filename==NULL || filename[0]=='\0' )
 198     return -1;
 199   /* send save command to mpd */
 200   D("Saving playlist as \'%s \'...\n", filename);
 201   if( (error=mpdclient_cmd_save_playlist(c, filename)) )
 202     {
 203       gint code = GET_ACK_ERROR_CODE(error);
 204
 205       if( code == MPD_ACK_ERROR_EXIST )
 206         {
 207           char *buf;
 208           int key;
 209
 210           buf=g_strdup_printf(_("Replace %s [%s/%s] ? "), filename, YES, NO);
 211           key = tolower(screen_getch(screen->status_window.w, buf));
 212           g_free(buf);
 213           if( key == YES[0] )
 214             {
 215               if( mpdclient_cmd_delete_playlist(c, filename) )
 216                 {
 217                   g_free(filename);
 218                   return -1;
 219                 }
 220               error = playlist_save(screen, c, filename, NULL);
 221               g_free(filename);
 222               return error;
 223             }
 224           screen_status_printf(_("Aborted!"));
 225         }
 226       g_free(filename);
 227       return -1;
 228     }
 229   /* success */
 230   screen_status_printf(_("Saved %s"), filename);
 231   g_free(filename);
 232   return 0;
 233 }
 234
 235 static void add_dir(GCompletion *gcmp, gchar *dir, GList **dir_list,
 236                     GList **list, mpdclient_t *c)
 237 {
 238   g_completion_remove_items(gcmp, *list);
 239   *list = string_list_remove(*list, dir);
 240   *list = gcmp_list_from_path(c, dir, *list, GCMP_TYPE_RFILE);
 241   g_completion_add_items(gcmp, *list);
 242   *dir_list = g_list_append(*dir_list, g_strdup(dir));
 243 }
 244
 245 static void add_pre_completion_cb(GCompletion *gcmp, gchar *line, void *data)
 246 {
 247   completion_callback_data_t *tmp = (completion_callback_data_t *)data;
 248   GList **dir_list = tmp->dir_list;
 249   GList **list = tmp->list;
 250   mpdclient_t *c = tmp->c;
 251
 252   D("pre_completion()...\n");
 253   if( *list == NULL )
 254     {
 255       /* create initial list */
 256       *list = gcmp_list_from_path(c, "", NULL, GCMP_TYPE_RFILE);
 257       g_completion_add_items(gcmp, *list);
 258     }
 259   else if( line && line[0] && line[strlen(line)-1]=='/' &&
 260            string_list_find(*dir_list, line) == NULL )
 261     {
 262       /* add directory content to list */
 263       add_dir(gcmp, line, dir_list, list, c);
 264     }
 265 }
 266
 267 static void add_post_completion_cb(GCompletion *gcmp, gchar *line,
 268                                    GList *items, void *data)
 269 {
 270   completion_callback_data_t *tmp = (completion_callback_data_t *)data;
 271   GList **dir_list = tmp->dir_list;
 272   GList **list = tmp->list;
 273   mpdclient_t *c = tmp->c;
 274   screen_t *screen = tmp->screen;
 275
 276   D("post_completion()...\n");
 277   if( g_list_length(items)>=1 )
 278     {
 279       screen_display_completion_list(screen, items);
 280       lw->clear = 1;
 281       lw->repaint = 1;
 282     }
 283
 284   if( line && line[0] && line[strlen(line)-1]=='/' &&
 285       string_list_find(*dir_list, line) == NULL )
 286     {
 287       /* add directory content to list */
 288       add_dir(gcmp, line, dir_list, list, c);
 289     }
 290 }
 291
 292 static int
 293 handle_add_to_playlist(screen_t *screen, mpdclient_t *c)
 294 {
 295   gchar *path;
 296   GCompletion *gcmp;
 297   GList *list = NULL;
 298   GList *dir_list = NULL;
 299   completion_callback_data_t data;
 300
 301   /* initialize completion support */
 302   gcmp = g_completion_new(NULL);
 303   g_completion_set_compare(gcmp, strncmp);
 304   data.list = &list;
 305   data.dir_list = &dir_list;
 306   data.screen = screen;
 307   data.c = c;
 308   wrln_completion_callback_data = &data;
 309   wrln_pre_completion_callback = add_pre_completion_cb;
 310   wrln_post_completion_callback = add_post_completion_cb;
 311   /* get path */
 312   path = screen_readln(screen->status_window.w,
 313                        _("Add: "),
 314                        NULL,
 315                        NULL,
 316                        gcmp);
 317
 318   /* destroy completion data */
 319   wrln_completion_callback_data = NULL;
 320   wrln_pre_completion_callback = NULL;
 321   wrln_post_completion_callback = NULL;
 322   g_completion_free(gcmp);
 323   string_list_free(list);
 324   string_list_free(dir_list);
 325
 326   /* add the path to the playlist */
 327   if( path && path[0] )
 328     mpdclient_cmd_add_path(c, path);
 329
 330   return 0;
 331 }
 332
 333 static void
 334 play_init(WINDOW *w, int cols, int rows)
 335 {
 336         lw = list_window_init(w, cols, rows);
 337 }
 338
 339 static void
 340 play_open(mpd_unused screen_t *screen, mpdclient_t *c)
 341 {
 342         static gboolean install_cb = TRUE;
 343
 344         if (install_cb) {
 345                 mpdclient_install_playlist_callback(c, playlist_changed_callback);
 346                 install_cb = FALSE;
 347         }
 348 }
 349
 350 static void
 351 play_resize(int cols, int rows)
 352 {
 353         lw->cols = cols;
 354         lw->rows = rows;
 355 }
 356
 357
 358 static void
 359 play_exit(void)
 360 {
 361         list_window_free(lw);
 362 }
 363
 364 static const char *
 365 play_title(char *str, size_t size)
 366 {
 367         if( strcmp(options.host, "localhost") == 0 )
 368                 return _("Playlist");
 369
 370         g_snprintf(str, size, _("Playlist on %s"), options.host);
 371         return str;
 372 }
 373
 374 static void
 375 play_paint(mpd_unused screen_t *screen, mpdclient_t *c)
 376 {
 377         lw->clear = 1;
 378
 379         list_window_paint(lw, list_callback, (void *) c);
 380         wnoutrefresh(lw->w);
 381 }
 382
 383 static void
 384 play_update(screen_t *screen, mpdclient_t *c)
 385 {
 386         /* hide the cursor when mpd are playing and the user are inactive */
 387         if( options.hide_cursor>0 && c->status->state == MPD_STATUS_STATE_PLAY &&
 388             time(NULL)-screen->input_timestamp >= options.hide_cursor ) {
 389                 lw->flags |= LW_HIDE_CURSOR;
 390         } else {
 391                 lw->flags &= ~LW_HIDE_CURSOR;
 392         }
 393
 394         /* center the cursor */
 395         if( options.auto_center ) {
 396                 static int prev_song_id = 0;
 397
 398                 if( c->song && prev_song_id != c->song->id ) {
 399                         center_playing_item(c);
 400                         prev_song_id = c->song->id;
 401                 }
 402         }
 403
 404         if( c->playlist.updated ) {
 405                 if (lw->selected >= c->playlist.list->len)
 406                         lw->selected = c->playlist.list->len - 1;
 407                 if (lw->start >= c->playlist.list->len)
 408                         list_window_reset(lw);
 409
 410                 play_paint(screen, c);
 411                 c->playlist.updated = FALSE;
 412         } else if( lw->repaint || 1) {
 413                 list_window_paint(lw, list_callback, (void *) c);
 414                 wnoutrefresh(lw->w);
 415                 lw->repaint = 0;
 416         }
 417 }
 418
 419 #ifdef HAVE_GETMOUSE
 420 static int
 421 handle_mouse_event(mpd_unused screen_t *screen, mpdclient_t *c)
 422 {
 423         int row;
 424         unsigned selected;
 425         unsigned long bstate;
 426
 427         if (screen_get_mouse_event(c, lw, c->playlist.list->len, &bstate, &row))
 428                 return 1;
 429
 430         if (bstate & BUTTON1_DOUBLE_CLICKED) {
 431                 /* stop */
 432                 screen_cmd(c, CMD_STOP);
 433                 return 1;
 434         }
 435
 436         selected = lw->start + row;
 437
 438         if (bstate & BUTTON1_CLICKED) {
 439                 /* play */
 440                 if (lw->start + row < c->playlist.list->len)
 441                         mpdclient_cmd_play(c, lw->start + row);
 442         } else if (bstate & BUTTON3_CLICKED) {
 443                 /* delete */
 444                 if (selected == lw->selected)
 445                         mpdclient_cmd_delete(c, lw->selected);
 446         }
 447
 448         lw->selected = selected;
 449         list_window_check_selected(lw, c->playlist.list->len);
 450
 451         return 1;
 452 }
 453 #else
 454 #define handle_mouse_event(s,c) (0)
 455 #endif
 456
 457 static int
 458 play_cmd(screen_t *screen, mpdclient_t *c, command_t cmd)
 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                 lw->repaint = 1;
 477                 center_playing_item(c);
 478                 return 1;
 479         case CMD_LIST_MOVE_UP:
 480                 mpdclient_cmd_move(c, lw->selected, lw->selected-1);
 481                 return 1;
 482         case CMD_LIST_MOVE_DOWN:
 483                 mpdclient_cmd_move(c, lw->selected, lw->selected+1);
 484                 return 1;
 485         case CMD_LIST_FIND:
 486         case CMD_LIST_RFIND:
 487         case CMD_LIST_FIND_NEXT:
 488         case CMD_LIST_RFIND_NEXT:
 489                 return screen_find(screen,
 490                                    lw, c->playlist.list->len,
 491                                    cmd, list_callback, (void *) c);
 492         case CMD_MOUSE_EVENT:
 493                 return handle_mouse_event(screen,c);
 494         default:
 495                 break;
 496         }
 497         return list_window_cmd(lw, c->playlist.list->len, cmd);
 498 }
 499
 500 static list_window_t *
 501 play_lw(void)
 502 {
 503   return lw;
 504 }
 505
 506 screen_functions_t *
 507 get_screen_playlist(void)
 508 {
 509   static screen_functions_t functions;
 510
 511   memset(&functions, 0, sizeof(screen_functions_t));
 512   functions.init   = play_init;
 513   functions.exit   = play_exit;
 514   functions.open   = play_open;
 515   functions.close  = NULL;
 516   functions.resize = play_resize;
 517   functions.paint  = play_paint;
 518   functions.update = play_update;
 519   functions.cmd    = play_cmd;
 520   functions.get_lw = play_lw;
 521   functions.get_title = play_title;
 522
 523   return &functions;
 524 }