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       /* TODO accelerators would be useful here.  There might be some
  39        * interaction with the main menu accelerators, _except_ for playlist
  40        * case!  */
  41       gtk_menu_attach(GTK_MENU(menu), items[n].w, 0, 1, n, n + 1);
  42     }
  43     set_tool_colors(menu);
  44   }
  45   /* Configure item sensitivity */
  46   for(int n = 0; n < nitems; ++n) {
  47     if(items[n].handlerid)
  48       g_signal_handler_disconnect(items[n].w,
  49                                   items[n].handlerid);
  50     gtk_widget_set_sensitive(items[n].w,
  51                              items[n].sensitive(extra));
  52     items[n].handlerid = g_signal_connect(items[n].w,
  53                                           "activate",
  54                                           G_CALLBACK(items[n].activate),
  55                                           extra);
  56   }
  57   /* Pop up the menu */
  58   gtk_widget_show_all(menu);
  59   gtk_menu_popup(GTK_MENU(menu), 0, 0, 0, 0,
  60                  event->button, event->time);
  61 }
  62
  63 /** @brief Make sure the right thing is selected
  64  * @param treeview Tree view
  65  * @param event Mouse event
  66  */
  67 void ensure_selected(GtkTreeView *treeview,
  68                      GdkEventButton *event) {
  69   GtkTreeSelection *selection = gtk_tree_view_get_selection(treeview);
  70   /* Get the path of the hovered item */
  71   GtkTreePath *path;
  72   if(!gtk_tree_view_get_path_at_pos(treeview,
  73                                     event->x, event->y,
  74                                     &path,
  75                                     NULL,
  76                                     NULL, NULL))
  77     return;                     /* If there isn't one, do nothing */
  78   if(!gtk_tree_selection_path_is_selected(selection, path)) {
  79     /* We're hovered over one thing but it's not the selected row.  This is
  80      * very confusing for the poor old user so we select the hovered row. */
  81     gtk_tree_selection_unselect_all(selection);
  82     gtk_tree_selection_select_path(selection, path);
  83   }
  84   gtk_tree_path_free(path);
  85 }
  86
  87 /*
  88 Local Variables:
  89 c-basic-offset:2
  90 comment-column:40
  91 fill-column:79
  92 indent-tabs-mode:nil
  93 End:
  94 */