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 3 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,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU 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, see <http://www.gnu.org/licenses/>.
  17  */
  18 /** @file disobedience/popup.c
  19  * @brief Disobedience popup menus
  20  */
  21 #include "disobedience.h"
  22 #include "popup.h"
  23
  24 void popup(GtkWidget **menup,
  25            GdkEventButton *event,
  26            struct menuitem *items,
  27            int nitems,
  28            void *extra) {
  29   GtkWidget *menu = *menup;
  30
  31   /* Create the menu if it does not yet exist */
  32   if(!menu) {
  33     menu = *menup = gtk_menu_new();
  34     g_signal_connect(menu, "destroy",
  35                      G_CALLBACK(gtk_widget_destroyed), menup);
  36     for(int n = 0; n < nitems; ++n) {
  37       items[n].w = gtk_menu_item_new_with_label(items[n].name);
  38       gtk_menu_attach(GTK_MENU(menu), items[n].w, 0, 1, n, n + 1);
  39     }
  40     set_tool_colors(menu);
  41   }
  42   /* Configure item sensitivity */
  43   for(int n = 0; n < nitems; ++n) {
  44     if(items[n].handlerid)
  45       g_signal_handler_disconnect(items[n].w,
  46                                   items[n].handlerid);
  47     gtk_widget_set_sensitive(items[n].w,
  48                              items[n].sensitive(extra));
  49     items[n].handlerid = g_signal_connect(items[n].w,
  50                                           "activate",
  51                                           G_CALLBACK(items[n].activate),
  52                                           extra);
  53   }
  54   /* Pop up the menu */
  55   gtk_widget_show_all(menu);
  56   gtk_menu_popup(GTK_MENU(menu), 0, 0, 0, 0,
  57                  event->button, event->time);
  58 }
  59
  60 /** @brief Make sure the right thing is selected
  61  * @param treeview Tree view
  62  * @param event Mouse event
  63  */
  64 void ensure_selected(GtkTreeView *treeview,
  65                      GdkEventButton *event) {
  66   GtkTreeSelection *selection = gtk_tree_view_get_selection(treeview);
  67   /* Get the path of the hovered item */
  68   GtkTreePath *path;
  69   if(!gtk_tree_view_get_path_at_pos(treeview,
  70                                     event->x, event->y,
  71                                     &path,
  72                                     NULL,
  73                                     NULL, NULL))
  74     return;                     /* If there isn't one, do nothing */
  75   if(!gtk_tree_selection_path_is_selected(selection, path)) {
  76     /* We're hovered over one thing but it's not the selected row.  This is
  77      * very confusing for the poor old user so we select the hovered row. */
  78     gtk_tree_selection_unselect_all(selection);
  79     gtk_tree_selection_select_path(selection, path);
  80   }
  81   gtk_tree_path_free(path);
  82 }
  83
  84 /*
  85 Local Variables:
  86 c-basic-offset:2
  87 comment-column:40
  88 fill-column:79
  89 indent-tabs-mode:nil
  90 End:
  91 */