gtkaboutdialog.c 55.6 KB
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/* GTK - The GIMP Toolkit
 * Copyright (C) 2001 CodeFactory AB
 * Copyright (C) 2001, 2002 Anders Carlsson
 * Copyright (C) 2003, 2004 Matthias Clasen <mclasen@redhat.com>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public 
 * License as published by the Free Software Foundation; either 
 * version 2 of the License, or (at your option) any later version.
 *
 * This library 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
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public
 * License along with this library; if not, write to the 
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 */

/*
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 * Author: Anders Carlsson <andersca@gnome.org>
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 *
 * Modified by the GTK+ Team and others 1997-2004.  See the AUTHORS
 * file for a list of people on the GTK+ Team.  See the ChangeLog
 * files for a list of changes.  These files are distributed with
 * GTK+ at ftp://ftp.gtk.org/pub/gtk/. 
 */

#include <config.h>

#include <gdk/gdkkeysyms.h>

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#include "gtkalias.h"

#include "gtkaboutdialog.h"
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#include "gtkbutton.h"
#include "gtkbbox.h"
#include "gtkdialog.h"
#include "gtkhbox.h"
#include "gtkimage.h"
#include "gtklabel.h"
#include "gtkmarshalers.h"
#include "gtknotebook.h"
#include "gtkscrolledwindow.h"
#include "gtkstock.h"
#include "gtktextview.h"
#include "gtkvbox.h"
#include "gtkviewport.h"
#include "gtkiconfactory.h"
#include "gtkintl.h"

#include <string.h>

typedef struct _GtkAboutDialogPrivate GtkAboutDialogPrivate;
struct _GtkAboutDialogPrivate 
{
  gchar *name;
  gchar *version;
  gchar *copyright;
  gchar *comments;
  gchar *website;
  gchar *website_label;
  gchar *translator_credits;
  gchar *license;
  
  gchar **authors;
  gchar **documenters;
  gchar **artists;
  
  GtkWidget *logo_image;
  GtkWidget *name_label;
  GtkWidget *comments_label;
  GtkWidget *copyright_label;
  GtkWidget *website_button;

  GtkWidget *credits_button;
  GtkWidget *credits_dialog;
  GtkWidget *license_button;
  GtkWidget *license_dialog;
  
  GdkCursor *hand_cursor;
  GdkCursor *regular_cursor;
  gboolean hovering_over_link;
};

#define GTK_ABOUT_DIALOG_GET_PRIVATE(obj) (G_TYPE_INSTANCE_GET_PRIVATE ((obj), GTK_TYPE_ABOUT_DIALOG, GtkAboutDialogPrivate))


enum 
{
  PROP_0,
  PROP_NAME,
  PROP_VERSION,
  PROP_COPYRIGHT,
  PROP_COMMENTS,
  PROP_WEBSITE,
  PROP_WEBSITE_LABEL,
  PROP_LICENSE,
  PROP_AUTHORS,
  PROP_DOCUMENTERS,
  PROP_TRANSLATOR_CREDITS,
  PROP_ARTISTS,
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  PROP_LOGO,
  PROP_LOGO_ICON_NAME
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};

static void                 gtk_about_dialog_finalize       (GObject            *object);
static void                 gtk_about_dialog_get_property   (GObject            *object,
							     guint               prop_id,
							     GValue             *value,
							     GParamSpec         *pspec);
static void                 gtk_about_dialog_set_property   (GObject            *object,
							     guint               prop_id,
							     const GValue       *value,
							     GParamSpec         *pspec);
static void                 update_name_version             (GtkAboutDialog     *about);
static GtkIconSet *         icon_set_new_from_pixbufs       (GList              *pixbufs);
static void                 activate_url                    (GtkWidget          *widget,
							     gpointer            data);
static void                 set_link_button_text            (GtkWidget          *about,
							     GtkWidget          *button,
							     gchar              *text);
static GtkWidget *          create_link_button              (GtkWidget          *about,
							     gchar              *text,
							     gchar              *url,
							     GCallback           callback,
							     gpointer            data);
static void                 follow_if_link                  (GtkAboutDialog     *about,
							     GtkTextIter        *iter);
static void                 set_cursor_if_appropriate       (GtkAboutDialog     *about,
							     GtkTextView        *text_view,
							     gint                x,
							     gint                y);
static void                 add_credits_page                (GtkAboutDialog     *about,
							     GtkWidget          *notebook,
							     gchar              *title,
							     gchar             **people);
static gboolean             credits_key_press_event         (GtkWidget          *text_view,
							     GdkEventKey        *event,
							     GtkAboutDialog     *about);
static gboolean             credits_event_after             (GtkWidget          *text_view,
							     GdkEvent           *event,
							     GtkAboutDialog     *about);
static gboolean             credits_motion_notify_event     (GtkWidget          *text_view,
							     GdkEventMotion     *event,
							     GtkAboutDialog     *about);
static gboolean             credits_visibility_notify_event (GtkWidget          *text_view,
							     GdkEventVisibility *event,
							     GtkAboutDialog     *about);
static void                 display_credits_dialog          (GtkWidget          *button,
							     gpointer            data);
static void                 display_license_dialog          (GtkWidget          *button,
							     gpointer            data);
				 
				 				       
static GtkAboutDialogActivateLinkFunc activate_email_hook = NULL;
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static gpointer activate_email_hook_data = NULL;
static GDestroyNotify activate_email_hook_destroy = NULL;

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static GtkAboutDialogActivateLinkFunc activate_url_hook = NULL;
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static gpointer activate_url_hook_data = NULL;
static GDestroyNotify activate_url_hook_destroy = NULL;
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G_DEFINE_TYPE (GtkAboutDialog, gtk_about_dialog, GTK_TYPE_DIALOG);

static void
gtk_about_dialog_class_init (GtkAboutDialogClass *klass)
{
  GObjectClass *object_class;
  GtkWidgetClass *widget_class;
  GtkDialogClass *dialog_class;
	
  object_class = (GObjectClass *)klass;
  widget_class = (GtkWidgetClass *)klass;
  dialog_class = (GtkDialogClass *)klass;
	
  object_class->set_property = gtk_about_dialog_set_property;
  object_class->get_property = gtk_about_dialog_get_property;

  object_class->finalize = gtk_about_dialog_finalize;

  g_object_class_install_property (object_class,
				   PROP_NAME,
				   g_param_spec_string ("name",
							P_("Program name"),
							P_("The name of the program. If this is not set, it defaults to g_get_application_name()"),
							NULL,
							G_PARAM_READWRITE));

  g_object_class_install_property (object_class,
				   PROP_VERSION,
				   g_param_spec_string ("version",
							P_("Program version"),
							P_("The version of the program"),
							NULL,
							G_PARAM_READWRITE));
  g_object_class_install_property (object_class,
				   PROP_COPYRIGHT,
				   g_param_spec_string ("copyright",
							P_("Copyright string"),
							P_("Copyright information for the program"),
							NULL,
							G_PARAM_READWRITE));
	
  g_object_class_install_property (object_class,
				   PROP_COMMENTS,
				   g_param_spec_string ("comments",
							P_("Comments string"),
							P_("Comments about the program"),
							NULL,
							G_PARAM_READWRITE));
  g_object_class_install_property (object_class,
				   PROP_LICENSE,
				   g_param_spec_string ("license",
							_("License"),
							_("The license of the program"),
							NULL,
							G_PARAM_READWRITE));

  g_object_class_install_property (object_class,
				   PROP_WEBSITE,
				   g_param_spec_string ("website",
							P_("Website URL"),
							P_("The URL for the link to the website of the program"),
							NULL,
							G_PARAM_READWRITE));

  g_object_class_install_property (object_class,
				   PROP_WEBSITE_LABEL,
				   g_param_spec_string ("website_label",
							P_("Website label"),
							P_("The label for the link to the website of the program. If this is not set, it defaults to the URL"),
							NULL,
							G_PARAM_READWRITE));

  g_object_class_install_property (object_class,
				   PROP_AUTHORS,
				   g_param_spec_boxed ("authors",
						       P_("Authors"),
						       P_("List of authors of the programs"),
						       G_TYPE_STRV,
						       G_PARAM_READWRITE));
  g_object_class_install_property (object_class,
				   PROP_DOCUMENTERS,
				   g_param_spec_boxed ("documenters",
						       P_("Documenters"),
						       P_("List of people documenting the program"),
						       G_TYPE_STRV,
						       G_PARAM_READWRITE));

  g_object_class_install_property (object_class,
				   PROP_ARTISTS,
				   g_param_spec_boxed ("artists",
						       P_("Artists"),
						       P_("List of people who have contributed artwork to the program"),
						       G_TYPE_STRV,
						       G_PARAM_READWRITE));

  g_object_class_install_property (object_class,
				   PROP_TRANSLATOR_CREDITS,
				   g_param_spec_string ("translator_credits",
							P_("Translator credits"),
							P_("Credits to the translators. This string should be marked as translatable"),
							NULL,
							G_PARAM_READWRITE));
	
  g_object_class_install_property (object_class,
				   PROP_LOGO,
				   g_param_spec_object ("logo",
							P_("Logo"),
							P_("A logo for the about box. If this is not set, it defaults to gtk_window_get_default_icon_list()"),
							GDK_TYPE_PIXBUF,
							G_PARAM_READWRITE));

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  g_object_class_install_property (object_class,
				   PROP_LOGO_ICON_NAME,
				   g_param_spec_string ("logo_icon_name",
							P_("Logo Icon Name"),
							P_("A named icon to use as the logo for the about box."),
							NULL,
							G_PARAM_READWRITE));

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  /* Style properties */
  gtk_widget_class_install_style_property (widget_class,
                                           g_param_spec_boxed ("link_color",
                                                               P_("Link Color"),
                                                               P_("Color of hyperlinks"),
                                                               GDK_TYPE_COLOR,
                                                               G_PARAM_READABLE));

  g_type_class_add_private (object_class, sizeof (GtkAboutDialogPrivate));
}

static void
gtk_about_dialog_init (GtkAboutDialog *about)
{
  GtkAboutDialogPrivate *priv;
  GtkWidget *vbox, *hbox, *button;

  /* Data */
  priv = GTK_ABOUT_DIALOG_GET_PRIVATE (about);
  about->private_data = priv;

  priv->name = NULL;
  priv->version = NULL;
  priv->copyright = NULL;
  priv->comments = NULL;
  priv->website = NULL;
  priv->website_label = NULL;
  priv->translator_credits = NULL;
  priv->authors = NULL;
  priv->documenters = NULL;
  priv->artists = NULL;

  priv->hand_cursor = gdk_cursor_new (GDK_HAND2);
  priv->regular_cursor = gdk_cursor_new (GDK_XTERM);
  priv->hovering_over_link = FALSE;

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  gtk_dialog_set_has_separator (GTK_DIALOG (about), FALSE);
  
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  /* Widgets */
  gtk_widget_push_composite_child ();
  vbox = gtk_vbox_new (FALSE, 8);
  gtk_container_set_border_width (GTK_CONTAINER (vbox), 8);

  gtk_box_pack_start (GTK_BOX (GTK_DIALOG (about)->vbox), vbox, TRUE, TRUE, 0);

  priv->logo_image = gtk_image_new ();
  gtk_box_pack_start (GTK_BOX (vbox), priv->logo_image, FALSE, FALSE, 0);

  priv->name_label = gtk_label_new (NULL);
  gtk_label_set_selectable (GTK_LABEL (priv->name_label), TRUE);
  gtk_label_set_justify (GTK_LABEL (priv->name_label), GTK_JUSTIFY_CENTER);
  gtk_box_pack_start (GTK_BOX (vbox), priv->name_label, FALSE, FALSE, 0);

  priv->comments_label = gtk_label_new (NULL);
  gtk_label_set_selectable (GTK_LABEL (priv->comments_label), TRUE);
  gtk_label_set_justify (GTK_LABEL (priv->comments_label), GTK_JUSTIFY_CENTER);
  gtk_label_set_line_wrap (GTK_LABEL (priv->comments_label), TRUE);
  gtk_box_pack_start (GTK_BOX (vbox), priv->comments_label, FALSE, FALSE, 0);

  priv->copyright_label = gtk_label_new (NULL);
  gtk_label_set_selectable (GTK_LABEL (priv->copyright_label), TRUE);	
  gtk_label_set_justify (GTK_LABEL (priv->copyright_label), GTK_JUSTIFY_CENTER);
  gtk_box_pack_start (GTK_BOX (vbox), priv->copyright_label, FALSE, FALSE, 0);

  button = create_link_button (GTK_WIDGET (about), "", "", 
			       G_CALLBACK (activate_url), about);

  hbox = gtk_hbox_new (TRUE, 0);
  gtk_box_pack_start (GTK_BOX (hbox), button, FALSE, FALSE, 0);
  gtk_box_pack_start (GTK_BOX (vbox), hbox, TRUE, FALSE, 0); 
  priv->website_button = button;
  
  gtk_widget_show (vbox);
  gtk_widget_show (priv->logo_image);
  gtk_widget_show (priv->name_label);
  gtk_widget_show (hbox);

  /* Add the OK button */
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  gtk_dialog_add_button (GTK_DIALOG (about), GTK_STOCK_CLOSE, GTK_RESPONSE_CLOSE);
  gtk_dialog_set_default_response (GTK_DIALOG (about), GTK_RESPONSE_CLOSE);
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  /* Add the credits button */
  button = gtk_button_new_from_stock (_("_Credits"));
  gtk_box_pack_end (GTK_BOX (GTK_DIALOG (about)->action_area), 
		    button, FALSE, TRUE, 0); 
  gtk_button_box_set_child_secondary (GTK_BUTTON_BOX (GTK_DIALOG (about)->action_area), button, TRUE);
  g_signal_connect (button, "clicked", G_CALLBACK (display_credits_dialog), about);
  priv->credits_button = button;
  priv->credits_dialog = NULL;

  /* Add the license button */
  button = gtk_button_new_from_stock (_("_License"));
  gtk_box_pack_end (GTK_BOX (GTK_DIALOG (about)->action_area), 
		    button, FALSE, TRUE, 0); 
  gtk_button_box_set_child_secondary (GTK_BUTTON_BOX (GTK_DIALOG (about)->action_area), button, TRUE);
  g_signal_connect (button, "clicked", G_CALLBACK (display_license_dialog), about);
  priv->license_button = button;
  priv->license_dialog = NULL;

  gtk_window_set_resizable (GTK_WINDOW (about), FALSE);

  gtk_widget_pop_composite_child ();
}

static void
gtk_about_dialog_finalize (GObject *object)
{
  GtkAboutDialog *about = GTK_ABOUT_DIALOG (object);
  GtkAboutDialogPrivate *priv = (GtkAboutDialogPrivate *)about->private_data;

  g_free (priv->name);
  g_free (priv->version);
  g_free (priv->copyright);
  g_free (priv->comments);
  g_free (priv->license);
  g_free (priv->website);
  g_free (priv->website_label);
  g_free (priv->translator_credits);

  g_strfreev (priv->authors);
  g_strfreev (priv->documenters);
  g_strfreev (priv->artists);

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  gdk_cursor_unref (priv->hand_cursor);
  gdk_cursor_unref (priv->regular_cursor);

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  G_OBJECT_CLASS (gtk_about_dialog_parent_class)->finalize (object);
}

static void
gtk_about_dialog_set_property (GObject      *object, 
			       guint         prop_id, 
			       const GValue *value, 
			       GParamSpec   *pspec)
{
  GtkAboutDialog *about = GTK_ABOUT_DIALOG (object);

  switch (prop_id) 
    {
    case PROP_NAME:
      gtk_about_dialog_set_name (about, g_value_get_string (value));
      break;
    case PROP_VERSION:
      gtk_about_dialog_set_version (about, g_value_get_string (value));
      break;
    case PROP_COMMENTS:
      gtk_about_dialog_set_comments (about, g_value_get_string (value));
      break;
    case PROP_WEBSITE:
      gtk_about_dialog_set_website (about, g_value_get_string (value));
      break;
    case PROP_WEBSITE_LABEL:
      gtk_about_dialog_set_website_label (about, g_value_get_string (value));
      break;
    case PROP_LICENSE:
      gtk_about_dialog_set_license (about, g_value_get_string (value));
      break;
    case PROP_COPYRIGHT:
      gtk_about_dialog_set_copyright (about, g_value_get_string (value));
      break;
    case PROP_LOGO:
      gtk_about_dialog_set_logo (about, g_value_get_object (value));
      break; 
    case PROP_AUTHORS:
      gtk_about_dialog_set_authors (about, (gchar**)g_value_get_boxed (value));
      break;
    case PROP_DOCUMENTERS:
      gtk_about_dialog_set_documenters (about, (gchar**)g_value_get_boxed (value));
      break;	
    case PROP_ARTISTS:
      gtk_about_dialog_set_artists (about, (gchar**)g_value_get_boxed (value));
      break;	
    case PROP_TRANSLATOR_CREDITS:
      gtk_about_dialog_set_translator_credits (about, g_value_get_string (value));
      break;
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    case PROP_LOGO_ICON_NAME:
      gtk_about_dialog_set_logo_icon_name (about, g_value_get_string (value));
      break;
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    default:
      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
      break;
    }
}

static void
gtk_about_dialog_get_property (GObject    *object, 
			       guint       prop_id, 
			       GValue     *value, 
			       GParamSpec *pspec)
{
  GtkAboutDialog *about = GTK_ABOUT_DIALOG (object);
  GtkAboutDialogPrivate *priv = (GtkAboutDialogPrivate *)about->private_data;
	
  switch (prop_id) 
    {
    case PROP_NAME:
      g_value_set_string (value, priv->name);
      break;
    case PROP_VERSION:
      g_value_set_string (value, priv->version);
      break;
    case PROP_COPYRIGHT:
      g_value_set_string (value, priv->copyright);
      break;
    case PROP_COMMENTS:
      g_value_set_string (value, priv->comments);
      break;
    case PROP_WEBSITE:
      g_value_set_string (value, priv->website);
      break;
    case PROP_WEBSITE_LABEL:
      g_value_set_string (value, priv->website_label);
      break;
    case PROP_LICENSE:
      g_value_set_string (value, priv->license);
      break;
    case PROP_TRANSLATOR_CREDITS:
      g_value_set_string (value, priv->translator_credits);
      break;
    case PROP_AUTHORS:
      g_value_set_boxed (value, priv->authors);
      break;
    case PROP_DOCUMENTERS:
      g_value_set_boxed (value, priv->documenters);
      break;
    case PROP_ARTISTS:
      g_value_set_boxed (value, priv->artists);
      break;
    case PROP_LOGO:
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      if (gtk_image_get_storage_type (GTK_IMAGE (priv->logo_image)) == GTK_IMAGE_PIXBUF)
	g_value_set_object (value, gtk_image_get_pixbuf (GTK_IMAGE (priv->logo_image)));
      else
	g_value_set_object (value, NULL);
      break;
    case PROP_LOGO_ICON_NAME:
      if (gtk_image_get_storage_type (GTK_IMAGE (priv->logo_image)) == GTK_IMAGE_ICON_NAME)
	{
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	  const gchar *icon_name;
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	  gtk_image_get_icon_name (GTK_IMAGE (priv->logo_image), &icon_name, NULL);
	  g_value_set_string (value, icon_name);
	}
      else
	g_value_set_string (value, NULL);
Matthias Clasen's avatar
Matthias Clasen committed
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      break;
    default:
      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
      break;
    }
}

/**
 * gtk_about_dialog_get_name:
 * @about: a #GtkAboutDialog
 * 
 * Returns the program name displayed in the about dialog.
 * 
 * Return value: The program name. The string is owned by the about
 *  dialog and must not be modified.
 *
 * Since: 2.6
 **/
G_CONST_RETURN gchar *
gtk_about_dialog_get_name (GtkAboutDialog *about)
{
  GtkAboutDialogPrivate *priv;
  
  g_return_val_if_fail (GTK_IS_ABOUT_DIALOG (about), NULL);

  priv = (GtkAboutDialogPrivate *)about->private_data;

  return priv->name;
}

static void
update_name_version (GtkAboutDialog *about)
{
  GtkAboutDialogPrivate *priv;
  gchar *title_string, *name_string;

  priv = (GtkAboutDialogPrivate *)about->private_data;

  title_string = g_strdup_printf (_("About %s"), priv->name);
  gtk_window_set_title (GTK_WINDOW (about), title_string);
  g_free (title_string);

  if (priv->version != NULL) 
    name_string = g_markup_printf_escaped ("<span size=\"xx-large\" weight=\"bold\">%s %s</span>", 
					     priv->name, priv->version);
  else
    name_string = g_markup_printf_escaped ("<span size=\"xx-large\" weight=\"bold\">%s</span>", 
					   priv->name);

  gtk_label_set_markup (GTK_LABEL (priv->name_label), name_string);

  g_free (name_string);
}

/**
 * gtk_about_dialog_set_name:
 * @about: a #GtkAboutDialog
 * @name: the program name
 *
 * Sets the name to display in the about dialog. 
 * If this is not set, it defaults to g_get_application_name().
 * 
 * Since: 2.6
 **/
void
gtk_about_dialog_set_name (GtkAboutDialog *about, 
			   const gchar    *name)
{
  GtkAboutDialogPrivate *priv;
  gchar *tmp;

  g_return_if_fail (GTK_IS_ABOUT_DIALOG (about));
	
  priv = (GtkAboutDialogPrivate *)about->private_data;
  tmp = priv->name;
  priv->name = g_strdup (name ? name : g_get_application_name ());
  g_free (tmp);

  update_name_version (about);

  g_object_notify (G_OBJECT (about), "name");
}

/**
 * gtk_about_dialog_get_version:
 * @about: a #GtkAboutDialog
 * 
 * Returns the version string.
 * 
 * Return value: The version string. The string is owned by the about
 *  dialog and must not be modified.
 *
 * Since: 2.6
 **/
G_CONST_RETURN gchar *
gtk_about_dialog_get_version (GtkAboutDialog *about)
{
  GtkAboutDialogPrivate *priv;
  
  g_return_val_if_fail (GTK_IS_ABOUT_DIALOG (about), NULL);

  priv = (GtkAboutDialogPrivate *)about->private_data;

  return priv->version;
}

/**
 * gtk_about_dialog_set_version:
 * @about: a #GtkAboutDialog
 * @version: the version string 
 *
 * Sets the version string to display in the about dialog.
 * 
 * Since: 2.6
 **/
void
gtk_about_dialog_set_version (GtkAboutDialog *about, 
			      const gchar    *version)
{
  GtkAboutDialogPrivate *priv;
  gchar *tmp;

  g_return_if_fail (GTK_IS_ABOUT_DIALOG (about));

  priv = (GtkAboutDialogPrivate *)about->private_data;
  
  tmp = priv->version;
  priv->version = version ? g_strdup (version) : NULL;
  g_free (tmp);

  update_name_version (about);

  g_object_notify (G_OBJECT (about), "version");
}

/**
 * gtk_about_dialog_get_copyright:
 * @about: a #GtkAboutDialog
 * 
 * Returns the copyright string.
 * 
 * Return value: The copyright string. The string is owned by the about
 *  dialog and must not be modified.
 *
 * Since: 2.6
 **/
G_CONST_RETURN gchar *
gtk_about_dialog_get_copyright (GtkAboutDialog *about)
{
  GtkAboutDialogPrivate *priv;
  
  g_return_val_if_fail (GTK_IS_ABOUT_DIALOG (about), NULL);

  priv = (GtkAboutDialogPrivate *)about->private_data;

  return priv->copyright;
}

/**
 * gtk_about_dialog_set_copyright:
 * @about: a #GtkAboutDialog
 * @copyright: the copyright string
 * 
 * Sets the copyright string to display in the about dialog.
 * This should be a short string of one or two lines. 
 *
 * Since: 2.6
 **/
void
gtk_about_dialog_set_copyright (GtkAboutDialog *about, 
				const gchar    *copyright)
{
  GtkAboutDialogPrivate *priv;
  gchar *copyright_string, *tmp;

  g_return_if_fail (GTK_IS_ABOUT_DIALOG (about));

  priv = (GtkAboutDialogPrivate *)about->private_data;
	
  tmp = priv->copyright;
  priv->copyright = copyright ? g_strdup (copyright) : NULL;
  g_free (tmp);
  
  if (priv->copyright != NULL) 
    {
      copyright_string = g_markup_printf_escaped ("<span size=\"small\">%s</span>", 
						  priv->copyright);
      gtk_label_set_markup (GTK_LABEL (priv->copyright_label), copyright_string);
      g_free (copyright_string);
  
      gtk_widget_show (priv->copyright_label);
    }
  else 
    gtk_widget_hide (priv->copyright_label);
  
  g_object_notify (G_OBJECT (about), "copyright");
}

/**
 * gtk_about_dialog_get_comments:
 * @about: a #GtkAboutDialog
 * 
 * Returns the comments string.
 * 
 * Return value: The comments. The string is owned by the about
 *  dialog and must not be modified.
 *
 * Since: 2.6
 **/
G_CONST_RETURN gchar *
gtk_about_dialog_get_comments (GtkAboutDialog *about)
{
  GtkAboutDialogPrivate *priv;
  
  g_return_val_if_fail (GTK_IS_ABOUT_DIALOG (about), NULL);

  priv = (GtkAboutDialogPrivate *)about->private_data;

  return priv->comments;
}

/**
 * gtk_about_dialog_set_comments:
 * @about: a #GtkAboutDialog
 * @comments: a comments string
 * 
 * Sets the comments string to display in the about 
 * dialog. This should be a short string of one or
 * two lines.
 *
 * Since: 2.6
 **/
void
gtk_about_dialog_set_comments (GtkAboutDialog *about, 
			       const gchar    *comments)
{
  GtkAboutDialogPrivate *priv;
  gchar *tmp;

  g_return_if_fail (GTK_IS_ABOUT_DIALOG (about));

  priv = (GtkAboutDialogPrivate *)about->private_data;
  
  tmp = priv->comments;
  if (comments) 
    {
      priv->comments = g_strdup (comments);
      gtk_label_set_text (GTK_LABEL (priv->comments_label), priv->comments);
      gtk_widget_show (priv->comments_label);
    }
  else
    {
      priv->comments = NULL;
      gtk_widget_hide (priv->comments_label);
    }
  g_free (tmp);

  g_object_notify (G_OBJECT (about), "comments");
}

/**
 * gtk_about_dialog_get_license:
 * @about: a #GtkAboutDialog
 * 
 * Returns the license information.
 * 
 * Return value: The license information. The string is owned by the about
 *  dialog and must not be modified.
 *
 * Since: 2.6
 **/
G_CONST_RETURN gchar *
gtk_about_dialog_get_license (GtkAboutDialog *about)
{
  GtkAboutDialogPrivate *priv;
  
  g_return_val_if_fail (GTK_IS_ABOUT_DIALOG (about), NULL);

  priv = (GtkAboutDialogPrivate *)about->private_data;

  return priv->license;
}

/**
 * gtk_about_dialog_set_license:
 * @about: a #GtkAboutDialog
 * @license: the license information or %NULL
 *
 * Sets the license information to be displayed in the secondary
 * license dialog. If @license is %NULL, the license button is
 * hidden.
 * 
 * Since: 2.6
 **/
void
gtk_about_dialog_set_license (GtkAboutDialog *about, 
			      const gchar    *license)
{
  GtkAboutDialogPrivate *priv;
  gchar *tmp;

  g_return_if_fail (GTK_IS_ABOUT_DIALOG (about));

  priv = (GtkAboutDialogPrivate *)about->private_data;

  tmp = priv->license;
  if (license) 
    {
      priv->license = g_strdup (license);
      gtk_widget_show (priv->license_button);
    }
  else
    {
      priv->license = NULL;
      gtk_widget_hide (priv->license_button);
    }
  g_free (tmp);

  g_object_notify (G_OBJECT (about), "license");
}

/**
 * gtk_about_dialog_get_website:
 * @about: a #GtkAboutDialog
 * 
 * Returns the website URL.
 * 
 * Return value: The website URL. The string is owned by the about
 *  dialog and must not be modified.
 *
 * Since: 2.6
 **/
G_CONST_RETURN gchar *
gtk_about_dialog_get_website (GtkAboutDialog *about)
{
  GtkAboutDialogPrivate *priv;
  
  g_return_val_if_fail (GTK_IS_ABOUT_DIALOG (about), NULL);

  priv = (GtkAboutDialogPrivate *)about->private_data;

  return priv->website;
}

/**
 * gtk_about_dialog_set_website:
 * @about: a #GtkAboutDialog
 * @website: a URL string starting with "http://"
 * 
 * Sets the URL to use for the website link.
 *
 * Since: 2.6
 **/
void
gtk_about_dialog_set_website (GtkAboutDialog *about, 
			      const gchar    *website)
{
  GtkAboutDialogPrivate *priv;
  gchar *tmp;

  g_return_if_fail (GTK_IS_ABOUT_DIALOG (about));

  priv = (GtkAboutDialogPrivate *)about->private_data;
  
  tmp = priv->website;
  if (website != NULL)
    {
      priv->website = g_strdup (website);
      if (activate_url_hook != NULL)
	{
	  g_object_set_data_full (G_OBJECT (priv->website_button), 
				  "url", g_strdup (website), g_free);  
	  if (priv->website_label == NULL) 
	    gtk_about_dialog_set_website_label (about, website);
	}
      else 
	{
	  GtkWidget *hbox = priv->website_button->parent;
	  gtk_widget_destroy (priv->website_button);
	  priv->website_button = gtk_label_new (website);
	  gtk_label_set_selectable (GTK_LABEL (priv->website_button), TRUE);
	  gtk_container_add (GTK_CONTAINER (hbox), priv->website_button);
	  gtk_widget_show (priv->website_button);
	}
    }
  else 
    {
      priv->website = NULL;
      g_object_set_data (G_OBJECT (priv->website_button), "url", NULL);
    }
  g_free (tmp);

  g_object_notify (G_OBJECT (about), "website");
}

/**
 * gtk_about_dialog_get_website_label:
 * @about: a #GtkAboutDialog
 * 
 * Returns the label used for the website link. 
 * 
 * Return value: The label used for the website link. The string is owned by the about
 *  dialog and must not be modified.
 *
 * Since: 2.6
 **/
G_CONST_RETURN gchar *
gtk_about_dialog_get_website_label (GtkAboutDialog *about)
{
  GtkAboutDialogPrivate *priv;
  
  g_return_val_if_fail (GTK_IS_ABOUT_DIALOG (about), NULL);

  priv = (GtkAboutDialogPrivate *)about->private_data;

  return priv->website_label;
}

/**
 * gtk_about_dialog_set_website_label:
 * @about: a #GtkAboutDialog
 * @website_label: the label used for the website link
 * 
 * Sets the label to be used for the website link.
 * It defaults to the website URL.
 *
 * Since: 2.6
 **/
void
gtk_about_dialog_set_website_label (GtkAboutDialog *about, 
				    const gchar    *website_label)
{
  GtkAboutDialogPrivate *priv;
  gchar *tmp;

  g_return_if_fail (GTK_IS_ABOUT_DIALOG (about));

  priv = (GtkAboutDialogPrivate *)about->private_data;

  tmp = priv->website_label;
  if (activate_url_hook != NULL)
    {
      if (website_label != NULL) 
	{
	  priv->website_label = g_strdup (website_label);
	  set_link_button_text (GTK_WIDGET (about),
				priv->website_button, 
				priv->website_label);
	  gtk_widget_show (priv->website_button);
	}
      else 
	{
	  priv->website_label = NULL;
	  gtk_widget_hide (priv->website_button);
	}
    }
  g_free (tmp);

  g_object_notify (G_OBJECT (about), "website_label");
}

/**
 * gtk_about_dialog_get_authors:
 * @about: a #GtkAboutDialog
 * 
 * Returns the string which are displayed in the authors tab
 * of the secondary credits dialog.
 * 
 * Return value: A %NULL-terminated string array containing
 *  the authors. The array is owned by the about dialog 
 *  and must not be modified.
 *
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