glade.c

   1 /* -*- Mode: C ; c-basic-offset: 2 -*- */
   2 /*****************************************************************************
   3  *
   4  *   libglade helpers
   5  *
   6  *   This file is part of gmidimonitor
   7  *
   8  *   Copyright (C) 2005,2006,2007,2008 Nedko Arnaudov <nedko@arnaudov.name>
   9  *
  10  *   This program is free software; you can redistribute it and/or modify
  11  *   it under the terms of the GNU General Public License as published by
  12  *   the Free Software Foundation; version 2 of the License
  13  *
  14  *   This program is distributed in the hope that it will be useful,
  15  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  *   GNU General Public License for more details.
  18  *
  19  *   You should have received a copy of the GNU General Public License
  20  *   along with this program; if not, write to the Free Software
  21  *   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  22  *
  23  *****************************************************************************/
  24
  25 #include <stdlib.h>
  26 #include <gtk/gtk.h>
  27 #include <glade/glade.h>
  28
  29 #include "glade.h"
  30 #include "path.h"
  31
  32 static void
  33 glade_signal_connect_func(
  34   const gchar *cb_name, GObject *obj,
  35   const gchar *signal_name, const gchar *signal_data,
  36   GObject *conn_obj, gboolean conn_after,
  37   gpointer user_data)
  38 {
  39   /** Module with all the symbols of the program */
  40   static GModule *mod_self = NULL;
  41   gpointer handler_func;
  42
  43   /* initialize gmodule */
  44   if (mod_self == NULL)
  45   {
  46     mod_self = g_module_open(NULL, 0);
  47     g_assert(mod_self != NULL);
  48 /*     g_warning("%p", mod_self); */
  49   }
  50
  51 /*   g_print("glade_signal_connect_func:" */
  52 /*           " cb_name = '%s', signal_name = '%s', " */
  53 /*           "signal_data = '%s', obj = 0x%08X, conn_after = %s\n", */
  54 /*           cb_name, signal_name, */
  55 /*           signal_data, (unsigned int)obj, conn_after?"true":"false"); */
  56
  57 /*   g_warning("%s", g_module_name(mod_self)); */
  58
  59   if (!g_module_symbol(mod_self, cb_name, &handler_func))
  60   {
  61     g_warning("callback function not found: %s", cb_name);
  62     return;
  63   }
  64
  65   /* found callback */
  66   if (conn_obj)
  67   {
  68     if (conn_after)
  69     {
  70       g_signal_connect_object(
  71         obj,
  72         signal_name,
  73         handler_func,
  74         conn_obj,
  75         G_CONNECT_AFTER);
  76     }
  77     else
  78     {
  79       g_signal_connect_object(
  80         obj,
  81         signal_name,
  82         handler_func,
  83         conn_obj,
  84         G_CONNECT_SWAPPED);
  85     }
  86   }
  87   else
  88   {
  89     /* no conn_obj; use standard connect */
  90     gpointer data = NULL;
  91
  92     data = user_data;
  93
  94     if (conn_after)
  95     {
  96       g_signal_connect_after(
  97         obj,
  98         signal_name,
  99         handler_func,
 100         data);
 101     }
 102     else
 103     {
 104       g_signal_connect(
 105         obj,
 106         signal_name,
 107         handler_func,
 108         data);
 109     }
 110   }
 111 }
 112
 113 GtkWidget *
 114 construct_glade_widget(
 115   const gchar * id)
 116 {
 117   gchar * glade_filename;
 118   GtkWidget * widget;
 119   GladeXML * xml;
 120
 121   glade_filename = path_get_data_filename("gmidimonitor.glade");
 122   if (glade_filename == NULL)
 123   {
 124     g_warning("Cannot find glade UI description file.");
 125     exit(1);
 126   }
 127
 128   /* load the interface */
 129   xml = glade_xml_new(glade_filename, id, NULL);
 130
 131   g_free(glade_filename);
 132
 133   widget = glade_xml_get_widget(xml, id);
 134
 135   /* connect the signals in the interface */
 136   glade_xml_signal_autoconnect_full(
 137     xml,
 138     (GladeXMLConnectFunc)glade_signal_connect_func,
 139     widget);
 140
 141   return widget;
 142 }
 143
 144 GtkWidget *
 145 get_glade_widget_child(
 146   GtkWidget * root,
 147   const gchar * id)
 148 {
 149   GladeXML * xml;
 150   GtkWidget * widget;
 151
 152   xml = glade_get_widget_tree(root);
 153
 154   widget = glade_xml_get_widget(xml, id);
 155
 156   return widget;
 157 }