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 #include "disobedience.h"
  19 #include "popup.h"
  20
  21 void popup(GtkWidget **menup,
  22            GdkEventButton *event,
  23            struct menuitem *items,
  24            int nitems,
  25            void *extra) {
  26   GtkWidget *menu = *menup;
  27
  28   /* Create the menu if it does not yet exist */
  29   if(!menu) {
  30     menu = *menup = gtk_menu_new();
  31     g_signal_connect(menu, "destroy",
  32                      G_CALLBACK(gtk_widget_destroyed), menup);
  33     for(int n = 0; n < nitems; ++n) {
  34       items[n].w = gtk_menu_item_new_with_label(items[n].name);
  35       gtk_menu_attach(GTK_MENU(menu), items[n].w, 0, 1, n, n + 1);
  36     }
  37     set_tool_colors(menu);
  38   }
  39   /* Configure item sensitivity */
  40   for(int n = 0; n < nitems; ++n) {
  41     if(items[n].handlerid)
  42       g_signal_handler_disconnect(items[n].w,
  43                                   items[n].handlerid);
  44     gtk_widget_set_sensitive(items[n].w,
  45                              items[n].sensitive(extra));
  46     items[n].handlerid = g_signal_connect(items[n].w,
  47                                           "activate",
  48                                           G_CALLBACK(items[n].activate),
  49                                           extra);
  50   }
  51   /* Pop up the menu */
  52   gtk_widget_show_all(menu);
  53   gtk_menu_popup(GTK_MENU(menu), 0, 0, 0, 0,
  54                  event->button, event->time);
  55 }
  56
  57 /** @brief Make sure the right thing is selected
  58  * @param widget Tree view
  59  * @param event Mouse event
  60  */
  61 void ensure_selected(GtkTreeView *treeview,
  62                      GdkEventButton *event) {
  63   GtkTreeSelection *selection = gtk_tree_view_get_selection(treeview);
  64   /* Get the path of the hovered item */
  65   GtkTreePath *path;
  66   if(!gtk_tree_view_get_path_at_pos(treeview,
  67                                     event->x, event->y,
  68                                     &path,
  69                                     NULL,
  70                                     NULL, NULL))
  71     return;                     /* If there isn't one, do nothing */
  72   if(!gtk_tree_selection_path_is_selected(selection, path)) {
  73     /* We're hovered over one thing but it's not the selected row.  This is
  74      * very confusing for the poor old user so we select the hovered row. */
  75     gtk_tree_selection_unselect_all(selection);
  76     gtk_tree_selection_select_path(selection, path);
  77   }
  78   gtk_tree_path_free(path);
  79 }
  80
  81 /*
  82 Local Variables:
  83 c-basic-offset:2
  84 comment-column:40
  85 fill-column:79
  86 indent-tabs-mode:nil
  87 End:
  88 */