chiark - git - mdw - disorder/blob - disobedience/choose-menu.c

   1 /*
   2  * This file is part of DisOrder
   3  * Copyright (C) 2008 Richard Kettlewell
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * General Public License for more details.
  14  *
  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
  18  * USA
  19  */
  20 #include "disobedience.h"
  21 #include "popup.h"
  22 #include "choose.h"
  23
  24 /** @brief Popup menu */
  25 static GtkWidget *choose_menu;
  26
  27 /** @brief Recursion step for choose_get_visible()
  28  * @param parent A visible node, or NULL for the root
  29  * @param callback Called for each visible node
  30  * @param userdata Passed to @p callback
  31  *
  32  * If @p callback returns nonzero, the walk stops immediately.
  33  */
  34 static int choose_visible_recurse(GtkTreeIter *parent,
  35                                   int (*callback)(GtkTreeIter *it,
  36                                                   int isfile,
  37                                                   void *userdata),
  38                                   void *userdata) {
  39   int expanded;
  40   if(parent) {
  41     /* Skip placeholders */
  42     if(choose_is_placeholder(parent))
  43       return 0;
  44     const int isfile = choose_is_file(parent);
  45     if(callback(parent, isfile, userdata))
  46       return 1;
  47     if(isfile)
  48       return 0;                 /* Files never have children */
  49     GtkTreePath *parent_path
  50       = gtk_tree_model_get_path(GTK_TREE_MODEL(choose_store),
  51                                 parent);
  52     expanded = gtk_tree_view_row_expanded(GTK_TREE_VIEW(choose_view),
  53                                           parent_path);
  54     gtk_tree_path_free(parent_path);
  55   } else
  56     expanded = 1;
  57   /* See if parent is expanded */
  58   if(expanded) {
  59     /* Parent is expanded, visit all its children */
  60     GtkTreeIter it[1];
  61     gboolean itv = gtk_tree_model_iter_children(GTK_TREE_MODEL(choose_store),
  62                                                 it,
  63                                                 parent);
  64     while(itv) {
  65       if(choose_visible_recurse(it, callback, userdata))
  66         return TRUE;
  67       itv = gtk_tree_model_iter_next(GTK_TREE_MODEL(choose_store), it);
  68     }
  69   }
  70   return 0;
  71 }
  72
  73 static void choose_visible_visit(int (*callback)(GtkTreeIter *it,
  74                                                  int isfile,
  75                                                  void *userdata),
  76                                  void *userdata) {
  77   choose_visible_recurse(NULL, callback, userdata);
  78 }
  79
  80 static int choose_selectall_sensitive_callback
  81    (GtkTreeIter attribute((unused)) *it,
  82      int isfile,
  83      void *userdata) {
  84   if(isfile) {
  85     *(int *)userdata = 1;
  86     return 1;
  87   }
  88   return 0;
  89 }
  90
  91 /** @brief Should 'select all' be sensitive?
  92  *
  93  * Yes if there are visible files.
  94  */
  95 static int choose_selectall_sensitive(void attribute((unused)) *extra) {
  96   int files = 0;
  97   choose_visible_visit(choose_selectall_sensitive_callback, &files);
  98   return files > 0;
  99 }
 100
 101 static int choose_selectall_activate_callback
 102     (GtkTreeIter *it,
 103      int isfile,
 104      void attribute((unused)) *userdata) {
 105   if(isfile)
 106     gtk_tree_selection_select_iter(choose_selection, it);
 107   else
 108     gtk_tree_selection_unselect_iter(choose_selection, it);
 109   return 0;
 110 }
 111
 112 /** @brief Activate select all
 113  *
 114  * Selects all files and deselects everything else.
 115  */
 116 static void choose_selectall_activate(GtkMenuItem attribute((unused)) *item,
 117                                       gpointer attribute((unused)) userdata) {
 118   choose_visible_visit(choose_selectall_activate_callback, 0);
 119 }
 120
 121 /** @brief Should 'select none' be sensitive
 122  *
 123  * Yes if anything is selected.
 124  */
 125 static int choose_selectnone_sensitive(void attribute((unused)) *extra) {
 126   return gtk_tree_selection_count_selected_rows(choose_selection) > 0;
 127 }
 128
 129 /** @brief Activate select none */
 130 static void choose_selectnone_activate(GtkMenuItem attribute((unused)) *item,
 131                                        gpointer attribute((unused)) userdata) {
 132   gtk_tree_selection_unselect_all(choose_selection);
 133 }
 134
 135 static void choose_play_sensitive_callback(GtkTreeModel attribute((unused)) *model,
 136                                            GtkTreePath attribute((unused)) *path,
 137                                            GtkTreeIter *iter,
 138                                            gpointer data) {
 139   int *filesp = data;
 140
 141   if(*filesp == -1)
 142     return;
 143   if(choose_is_dir(iter))
 144     *filesp = -1;
 145   else if(choose_is_file(iter))
 146     ++*filesp;
 147 }
 148
 149 /** @brief Should 'play' be sensitive?
 150  *
 151  * Yes if tracks are selected and no directories are */
 152 static int choose_play_sensitive(void attribute((unused)) *extra) {
 153   int files = 0;
 154
 155   gtk_tree_selection_selected_foreach(choose_selection,
 156                                       choose_play_sensitive_callback,
 157                                       &files);
 158   return files > 0;
 159 }
 160
 161 static void choose_gather_selected_files_callback(GtkTreeModel attribute((unused)) *model,
 162                                                   GtkTreePath attribute((unused)) *path,
 163                                                   GtkTreeIter *iter,
 164                                                   gpointer data) {
 165   struct vector *v = data;
 166
 167   if(choose_is_file(iter))
 168     vector_append(v, choose_get_track(iter));
 169 }
 170
 171
 172 static void choose_play_activate(GtkMenuItem attribute((unused)) *item,
 173                                  gpointer attribute((unused)) userdata) {
 174   struct vector v[1];
 175   vector_init(v);
 176   gtk_tree_selection_selected_foreach(choose_selection,
 177                                       choose_gather_selected_files_callback,
 178                                       v);
 179   for(int n = 0; n < v->nvec; ++n)
 180     disorder_eclient_play(client, v->vec[n], choose_play_completed, 0);
 181 }
 182
 183 static int choose_properties_sensitive(void *extra) {
 184   return choose_play_sensitive(extra);
 185 }
 186
 187 static void choose_properties_activate(GtkMenuItem attribute((unused)) *item,
 188                                        gpointer attribute((unused)) userdata) {
 189   struct vector v[1];
 190   vector_init(v);
 191   gtk_tree_selection_selected_foreach(choose_selection,
 192                                       choose_gather_selected_files_callback,
 193                                       v);
 194   properties(v->nvec, (const char **)v->vec);
 195 }
 196
 197 /** @brief Pop-up menu for choose */
 198 static struct menuitem choose_menuitems[] = {
 199   {
 200     "Play track",
 201     choose_play_activate,
 202     choose_play_sensitive,
 203     0,
 204     0
 205   },
 206   {
 207     "Track properties",
 208     choose_properties_activate,
 209     choose_properties_sensitive,
 210     0,
 211     0
 212   },
 213   {
 214     "Select all tracks",
 215     choose_selectall_activate,
 216     choose_selectall_sensitive,
 217     0,
 218     0
 219   },
 220   {
 221     "Deselect all tracks",
 222     choose_selectnone_activate,
 223     choose_selectnone_sensitive,
 224     0,
 225     0
 226   },
 227 };
 228
 229 const struct tabtype choose_tabtype = {
 230   choose_properties_sensitive,
 231   choose_selectall_sensitive,
 232   choose_selectnone_sensitive,
 233   choose_properties_activate,
 234   choose_selectall_activate,
 235   choose_selectnone_activate,
 236   0,
 237   0
 238 };
 239
 240 /** @brief Called when a mouse button is pressed or released */
 241 gboolean choose_button_event(GtkWidget attribute((unused)) *widget,
 242                              GdkEventButton *event,
 243                              gpointer attribute((unused)) user_data) {
 244   if(event->type == GDK_BUTTON_RELEASE && event->button == 2) {
 245     /* Middle click release - play track */
 246     ensure_selected(GTK_TREE_VIEW(choose_view), event);
 247     choose_play_activate(NULL, NULL);
 248   } else if(event->type == GDK_BUTTON_PRESS && event->button == 3) {
 249     /* Right click press - pop up the menu */
 250     ensure_selected(GTK_TREE_VIEW(choose_view), event);
 251     popup(&choose_menu, event,
 252           choose_menuitems, sizeof choose_menuitems / sizeof *choose_menuitems,
 253           0);
 254     return TRUE;
 255   }
 256   return FALSE;
 257 }
 258
 259 /*
 260 Local Variables:
 261 c-basic-offset:2
 262 comment-column:40
 263 fill-column:79
 264 indent-tabs-mode:nil
 265 End:
 266 */