chiark - git - mdw - disorder/blob - disobedience/popup.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
  23 void popup(GtkWidget **menup,
  24            GdkEventButton *event,
  25            struct menuitem *items,
  26            int nitems,
  27            void *extra) {
  28   GtkWidget *menu = *menup;
  29
  30   /* Create the menu if it does not yet exist */
  31   if(!menu) {
  32     menu = *menup = gtk_menu_new();
  33     g_signal_connect(menu, "destroy",
  34                      G_CALLBACK(gtk_widget_destroyed), menup);
  35     for(int n = 0; n < nitems; ++n) {
  36       items[n].w = gtk_menu_item_new_with_label(items[n].name);
  37       gtk_menu_attach(GTK_MENU(menu), items[n].w, 0, 1, n, n + 1);
  38     }
  39     set_tool_colors(menu);
  40   }
  41   /* Configure item sensitivity */
  42   for(int n = 0; n < nitems; ++n) {
  43     if(items[n].handlerid)
  44       g_signal_handler_disconnect(items[n].w,
  45                                   items[n].handlerid);
  46     gtk_widget_set_sensitive(items[n].w,
  47                              items[n].sensitive(extra));
  48     items[n].handlerid = g_signal_connect(items[n].w,
  49                                           "activate",
  50                                           G_CALLBACK(items[n].activate),
  51                                           extra);
  52   }
  53   /* Pop up the menu */
  54   gtk_widget_show_all(menu);
  55   gtk_menu_popup(GTK_MENU(menu), 0, 0, 0, 0,
  56                  event->button, event->time);
  57 }
  58
  59 /** @brief Make sure that something is selected
  60  * @param widget Tree view
  61  * @param event Mouse event (the hovered row will be selected)
  62  */
  63 void ensure_selected(GtkTreeView *treeview,
  64                      GdkEventButton *event) {
  65   GtkTreeSelection *selection = gtk_tree_view_get_selection(treeview);
  66   if(gtk_tree_selection_count_selected_rows(selection) == 0) {
  67     GtkTreePath *path;
  68     if(gtk_tree_view_get_path_at_pos(treeview,
  69                                      event->x, event->y,
  70                                      &path,
  71                                      NULL,
  72                                      NULL, NULL))
  73       gtk_tree_selection_select_path(selection, path);
  74     gtk_tree_path_free(path);
  75   }
  76 }
  77
  78 /*
  79 Local Variables:
  80 c-basic-offset:2
  81 comment-column:40
  82 fill-column:79
  83 indent-tabs-mode:nil
  84 End:
  85 */