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/*
This file is part of GNUnet
Copyright (C) 2005, 2006, 2010, 2011 Christian Grothoff (and other contributing authors)
GNUnet is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published
by the Free Software Foundation; either version 3, or (at your
option) any later version.
GNUnet is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with GNUnet; see the file COPYING. If not, write to the
Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
*/
/**
* @file src/lib/about.c
* @brief code to display an about dialog
* @author Christian Grothoff
* @author Igor Wronsky
*/
#include "gnunet_gtk.h"
/**
* Context for an about dialog.
*/
struct AboutDialogContext
{
/**
* Gtk builder for access to the widgets.
*/
GtkBuilder *builder;
/**
* The main window of the dialog.
*/
GtkWidget *ad;
/**
* Credits notebook.
*/
GtkWidget *about_credits_notebook;
/**
* License notebook.
*/
GtkWidget *about_license_scroller;
/**
* Buffer with the license text.
*/
GtkTextBuffer *license_contents;
};
/**
* Destroy all resources associated with the about dialog.
*
* @param ctx the dialog's context
*/
static void
destroy_about_dialog (struct AboutDialogContext *ctx)
{
gtk_widget_destroy (ctx->ad);
g_object_unref (G_OBJECT (ctx->builder));
GNUNET_free (ctx);
}
/**
* Helper function that makes one and only one of the
* three areas of the dialog visible.
*
* @param ctx the dialog context
* @param name name of the area to make visible, NULL for default
*/
static void
about_window_show_exclusively (struct AboutDialogContext *ctx,
const gchar * name)
{
if (NULL == name)
{
gtk_widget_hide (ctx->about_credits_notebook);
gtk_widget_hide (ctx->about_license_scroller);
}
else if (strcmp ("about_credits_notebook", name) == 0)
{
gtk_widget_show (ctx->about_credits_notebook);
gtk_widget_hide (ctx->about_license_scroller);
}
else if (strcmp ("about_license_scroller", name) == 0)
{
gtk_widget_show (ctx->about_license_scroller);
gtk_widget_hide (ctx->about_credits_notebook);
}
}
/**
* The about window has been realized; load the license file
* from our resource directory.
*
* @param widget unused
* @param ctx the dialog context
*/
G_MODULE_EXPORT void
GNUNET_GTK_about_window_realized (GtkWidget * widget,
struct AboutDialogContext *ctx)
{
gchar *license = NULL;
const char *path;
char *license_path;
path = GNUNET_OS_installation_get_path (GNUNET_OS_IPK_DOCDIR);
if (path != NULL)
GNUNET_asprintf (&license_path, "%s%s", path, "COPYING");
else
license_path = GNUNET_strdup ("COPYING");
if (g_file_get_contents (license_path, &license, NULL, NULL) &&
(license != NULL))
{
gtk_text_buffer_set_text (ctx->license_contents, license, -1);
g_free (license);
}
GNUNET_free_non_null (license_path);
}
/**
* The user clicked the "close" button, close the dialog.
*
* @param widget the button that was clicked
* @param ctx our dialog context
*/
G_MODULE_EXPORT void
GNUNET_GTK_about_close_button_clicked (GtkButton * widget,
struct AboutDialogContext *ctx)
{
destroy_about_dialog (ctx);
}
/**
* The user pushed the "delete" button, close the dialog.
*
* @param widget the widget that received the button
* @param event the button event
* @param ctx our dialog context
*/
G_MODULE_EXPORT gboolean
GNUNET_GTK_about_window_got_delete_event (GtkWidget * widget,
GdkEvent * event,
struct AboutDialogContext *ctx)
{
destroy_about_dialog (ctx);
return FALSE;
}
/**
* The user clicked the "credits" button, display the credits.
*
* @param widget the button that was clicked
* @param ctx our dialog context
*/
G_MODULE_EXPORT void
GNUNET_GTK_about_credits_button_clicked (GtkButton * widget,
struct AboutDialogContext *ctx)
{
about_window_show_exclusively (ctx, "about_credits_notebook");
}
/**
* The user clicked the "license" button, display the license.
*
* @param widget the button that was clicked
* @param ctx our dialog context
*/
G_MODULE_EXPORT void
GNUNET_GTK_about_license_button_clicked (GtkButton * widget,
struct AboutDialogContext *ctx)
{
about_window_show_exclusively (ctx, "about_license_scroller");
}
/**
* This displays an about dialog. The dialog must be called
* "about_window" with "about_credits_notebook" and
* "about_license_scroller" and "about_license_contents" being the
* respective subdialogs.
*
* @param dialogfile name of the glade file containing the dialog
*/
void
GNUNET_GTK_display_about (const char *dialogfile)
{
struct AboutDialogContext *ctx;
ctx = GNUNET_new (struct AboutDialogContext);
ctx->builder = GNUNET_GTK_get_new_builder (dialogfile, ctx);
if (NULL == ctx->builder)
{
GNUNET_free (ctx);
return;
}
ctx->about_credits_notebook =
GTK_WIDGET (gtk_builder_get_object (ctx->builder, "about_credits_notebook"));
ctx->about_license_scroller =
GTK_WIDGET (gtk_builder_get_object (ctx->builder, "about_license_scroller"));
ctx->ad = GTK_WIDGET (gtk_builder_get_object (ctx->builder, "about_window"));
ctx->license_contents =
GTK_TEXT_BUFFER (gtk_builder_get_object (ctx->builder, "license_contents"));
gtk_widget_show (ctx->ad);
}
/* end of about.c */
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