Added an experimental artist (browser) screen

git-svn-id: https://svn.musicpd.org/ncmpc/trunk@3322 09075e82-0dd4-0310-85a5-a0d7c8717e4f

1 files changed, 389 insertions, 0 deletions

diff --git a/src/screen_artist.c b/src/screen_artist.c
new file mode 100644
index 000000000..e09d9f049
--- /dev/null
+++ b/src/screen_artist.c
@@ -0,0 +1,389 @@
+/* 
+ * $Id$
+ *
+ * (c) 2004 by Kalle Wallin <kaw@linux.se>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+
+#include <ctype.h>
+#include <stdlib.h>
+#include <string.h>
+#include <glib.h>
+#include <ncurses.h>
+
+#include "config.h"
+#ifndef DISABLE_ARTIST_SCREEN
+#include "ncmpc.h"
+#include "options.h"
+#include "support.h"
+#include "mpdclient.h"
+#include "utils.h"
+#include "strfsong.h"
+#include "command.h"
+#include "screen.h"
+#include "screen_utils.h"
+#include "screen_browse.h"
+
+#define BUFSIZE 1024
+
+static char *artist = NULL;
+static char *album  = NULL;
+static list_window_t *lw = NULL;
+static mpdclient_filelist_t *filelist = NULL;
+static int metalist_length = 0;
+static GList *metalist = NULL;
+static GList *lw_state_list = NULL;
+
+/* store current state when entering a subdirectory */
+static void
+push_lw_state(void)
+{
+  list_window_t *tmp = g_malloc(sizeof(list_window_t));
+
+  memcpy(tmp, lw, sizeof(list_window_t));
+  lw_state_list = g_list_prepend(lw_state_list, (gpointer) tmp);
+}
+
+/* get previous state when leaving a directory */
+static void
+pop_lw_state(void)
+{
+  if( lw_state_list )
+    {
+      list_window_t *tmp = lw_state_list->data;
+
+      memcpy(lw, tmp, sizeof(list_window_t));
+      g_free(tmp);
+      lw_state_list->data = NULL;
+      lw_state_list = g_list_delete_link(lw_state_list, lw_state_list);
+    }
+}
+
+/* list_window callback */
+static char *
+artist_lw_callback(int index, int *highlight, void *data)
+{
+  static char buf[BUFSIZE];
+  char *str, *str_utf8;
+  
+  *highlight = 0;
+  if( (str_utf8=(char *) g_list_nth_data(metalist,index))==NULL )
+    return NULL;
+
+  str = utf8_to_locale(str_utf8);
+  g_snprintf(buf, BUFSIZE, "[%s]", str);
+  g_free(str);
+
+  return buf;
+}
+
+/* the playlist have been updated -> fix highlights */
+static void 
+playlist_changed_callback(mpdclient_t *c, int event, gpointer data)
+{
+  if( filelist==NULL )
+    return;
+  D("screen_artist.c> playlist_callback() [%d]\n", event);
+  switch(event)
+    {
+    case PLAYLIST_EVENT_CLEAR:
+      clear_highlights(filelist);
+      break;
+    default:
+      sync_highlights(c, filelist);
+      break;
+    }
+}
+
+static void
+update_metalist(mpdclient_t *c, char *m_artist, char *m_album)
+{
+  g_free(artist);
+  g_free(album);
+  artist = NULL;
+  album = NULL;
+  if( metalist )
+    metalist = string_list_free(metalist);
+  if (filelist ) {
+    mpdclient_remove_playlist_callback(c, playlist_changed_callback);
+    filelist = mpdclient_filelist_free(filelist);
+  }
+  if( m_album ) /* retreive songs... */
+    {
+      artist = m_artist;
+      album = m_album;
+      if( album[0] == 0 )
+	{
+	  album = g_strdup(_("All tracks"));
+	  filelist = mpdclient_filelist_search_utf8(c,  
+						    MPD_TABLE_ARTIST,
+						    artist);
+	}
+      else
+	filelist = mpdclient_filelist_search_utf8(c,  
+						  MPD_TABLE_ALBUM,
+						  album);
+      /* add a dummy entry for ".." */
+      filelist_entry_t *entry = g_malloc0(sizeof(filelist_entry_t));
+      entry->entity = NULL;
+      filelist->list = g_list_insert(filelist->list, entry, 0);
+      filelist->length++;
+      /* install playlist callback and fix highlights */
+      sync_highlights(c, filelist);
+      mpdclient_install_playlist_callback(c, playlist_changed_callback);
+    }
+  else if( m_artist ) /* retreive albums... */
+    {
+      artist = m_artist;
+      metalist = mpdclient_get_albums_utf8(c, m_artist);
+      /* add a dummy entry for ".." */
+      metalist = g_list_insert(metalist, g_strdup(".."), 0);
+      /* add a dummy entry for all songs */
+      metalist = g_list_insert(metalist, g_strdup(_("All tracks")), -1);
+
+    }
+  else /* retreive artists... */
+    {
+      metalist = mpdclient_get_artists_utf8(c);
+    }
+  metalist_length = g_list_length(metalist);
+}
+
+static void
+init(WINDOW *w, int cols, int rows)
+{
+  lw = list_window_init(w, cols, rows);
+  artist = NULL;
+  album = NULL;
+}
+
+static void
+quit(void)
+{
+  /* clear list window state */
+  if( lw_state_list )
+    {
+      GList *list = lw_state_list;
+      while( list )
+	{
+	  g_free(list->data);
+	  list->data = NULL;
+	  list = list->next;
+	}
+      g_list_free(lw_state_list);
+      lw_state_list = NULL;
+    }
+  
+  if( filelist )
+    filelist = mpdclient_filelist_free(filelist);
+  if( metalist )
+    metalist = string_list_free(metalist);
+  g_free(artist);
+  g_free(album);
+  artist = NULL;
+  album = NULL;
+  list_window_free(lw);  
+}
+
+static void
+open(screen_t *screen, mpdclient_t *c)
+{
+  if( metalist==NULL && filelist ==NULL)
+    update_metalist(c, NULL, NULL);
+}
+
+static void
+resize(int cols, int rows)
+{
+  lw->cols = cols;
+  lw->rows = rows;
+}
+
+static void
+close(void)
+{
+}
+
+static void 
+paint(screen_t *screen, mpdclient_t *c)
+{
+  lw->clear = 1;
+  
+  if( filelist )
+    {
+      list_window_paint(lw, browse_lw_callback, (void *) filelist);
+      filelist->updated = FALSE;
+    }
+  else if( metalist )
+    {
+      list_window_paint(lw, artist_lw_callback, (void *) metalist);
+    }
+  else
+    {
+      wmove(lw->w, 0, 0);
+      wclrtobot(lw->w);
+    }
+  wnoutrefresh(lw->w);
+}
+
+static void 
+update(screen_t *screen, mpdclient_t *c)
+{
+  if( filelist==NULL || filelist->updated )
+    {
+      paint(screen, c);
+      return;
+    }
+  list_window_paint(lw, browse_lw_callback, (void *) filelist);
+  wnoutrefresh(lw->w);
+}
+
+static char *
+get_title(char *str, size_t size)
+{
+  char *s1 = artist ? utf8_to_locale(artist) : NULL;
+  char *s2 = album ? utf8_to_locale(album) : NULL;
+
+  if( album )
+    g_snprintf(str, size,  _("Artist: %s - %s"), s1, s2);
+  else if( artist )
+    g_snprintf(str, size,  _("Artist: %s"), s1);
+  else
+    g_snprintf(str, size,  _("Artist: [db browser - EXPERIMENTAL]"));
+  g_free(s1);
+  g_free(s2);
+  return str;
+}
+
+static list_window_t *
+get_filelist_window()
+{
+  return lw;
+}
+
+static int 
+artist_cmd(screen_t *screen, mpdclient_t *c, command_t cmd)
+{
+  switch(cmd)
+    {
+    case CMD_PLAY:
+      if( artist && album )
+	{
+	  if( lw->selected==0 )  /* handle ".." */
+	    {
+	      update_metalist(c, g_strdup(artist), NULL);
+	      list_window_reset(lw);
+	      /* restore previous list window state */
+	      pop_lw_state(); 
+	    }
+	  else
+	    browse_handle_enter(screen, c, lw, filelist);
+	}
+      else if ( artist )
+	{
+	  if( lw->selected == 0 )  /* handle ".." */
+
+	    {
+	      update_metalist(c, NULL, NULL);
+	      list_window_reset(lw);
+	      /* restore previous list window state */
+	      pop_lw_state(); 
+	    }
+	  else if( lw->selected == metalist_length-1) /* handle "show all" */
+	    {
+	      update_metalist(c, g_strdup(artist), g_strdup("\0"));
+	      push_lw_state(); 
+	      list_window_reset(lw);
+	    }
+	  else /* select album */
+	    {
+	      char *selected = (char *) g_list_nth_data(metalist, lw->selected);
+	      update_metalist(c, g_strdup(artist), g_strdup(selected));
+	      push_lw_state(); 
+	      list_window_reset(lw);
+	    }
+	}
+      else
+	{
+	  char *selected = (char *) g_list_nth_data(metalist, lw->selected);
+	  update_metalist(c, g_strdup(selected), NULL);
+	  push_lw_state(); 
+	  list_window_reset(lw);
+	}
+      return 1;
+
+    case CMD_SELECT:
+      if( browse_handle_select(screen, c, lw, filelist) == 0 )
+	{
+	  /* continue and select next item... */
+	  cmd = CMD_LIST_NEXT;
+	}
+      return 1;
+
+      /* continue and update... */
+    case CMD_SCREEN_UPDATE:
+      return 0;
+
+    case CMD_LIST_FIND:
+    case CMD_LIST_RFIND:
+    case CMD_LIST_FIND_NEXT:
+    case CMD_LIST_RFIND_NEXT:
+      if( filelist )
+	return screen_find(screen, c, 
+			   lw, filelist->length,
+			   cmd, browse_lw_callback, (void *) filelist);
+      else if ( metalist )
+	return screen_find(screen, c, 
+			   lw, metalist_length,
+			   cmd, artist_lw_callback, (void *) metalist);
+      else
+	return 1;
+
+    case CMD_MOUSE_EVENT:
+      return browse_handle_mouse_event(screen,c,lw,filelist);
+
+    default:
+      if( filelist )
+	return list_window_cmd(lw, filelist->length, cmd);
+      else if( metalist )
+	return list_window_cmd(lw, metalist_length, cmd);
+    }
+  
+  return 0;
+}
+
+screen_functions_t *
+get_screen_artist(void)
+{
+  static screen_functions_t functions;
+
+  memset(&functions, 0, sizeof(screen_functions_t));
+  functions.init   = init;
+  functions.exit   = quit;
+  functions.open   = open;
+  functions.close  = close;
+  functions.resize = resize;
+  functions.paint  = paint;
+  functions.update = update;
+  functions.cmd    = artist_cmd;
+  functions.get_lw = get_filelist_window;
+  functions.get_title = get_title;
+
+  return &functions;
+}
+
+
+#endif /* ENABLE_ARTIST_SCREEN */