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/*
* e-menu-tool-button.c
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) version 3.
*
* This program 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with the program; if not, see <http://www.gnu.org/licenses/>
*
*
* Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
*
*/
#include "e-menu-tool-button.h"
G_DEFINE_TYPE (
EMenuToolButton,
e_menu_tool_button,
GTK_TYPE_MENU_TOOL_BUTTON)
static GtkWidget *
menu_tool_button_clone_image (GtkWidget *source)
{
GtkIconSize size;
GtkImageType image_type;
const gchar *icon_name;
/* XXX This isn't general purpose because it requires that the
* source image be using a named icon. Somewhat surprised
* GTK+ doesn't offer something like this. */
image_type = gtk_image_get_storage_type (GTK_IMAGE (source));
g_return_val_if_fail (image_type == GTK_IMAGE_ICON_NAME, NULL);
gtk_image_get_icon_name (GTK_IMAGE (source), &icon_name, &size);
return gtk_image_new_from_icon_name (icon_name, size);
}
static GtkMenuItem *
menu_tool_button_get_first_menu_item (GtkMenuToolButton *menu_tool_button)
{
GtkWidget *menu;
GtkMenuItem *item;
GList *children;
menu = gtk_menu_tool_button_get_menu (menu_tool_button);
if (!GTK_IS_MENU (menu))
return NULL;
children = gtk_container_get_children (GTK_CONTAINER (menu));
if (children == NULL)
return NULL;
item = GTK_MENU_ITEM (children->data);
g_list_free (children);
return item;
}
static void
menu_tool_button_update_button (GtkToolButton *tool_button)
{
GtkMenuItem *menu_item;
GtkMenuToolButton *menu_tool_button;
GtkImageMenuItem *image_menu_item;
GtkAction *action;
GtkWidget *image;
gchar *tooltip = NULL;
menu_tool_button = GTK_MENU_TOOL_BUTTON (tool_button);
menu_item = menu_tool_button_get_first_menu_item (menu_tool_button);
if (!GTK_IS_IMAGE_MENU_ITEM (menu_item))
return;
image_menu_item = GTK_IMAGE_MENU_ITEM (menu_item);
image = gtk_image_menu_item_get_image (image_menu_item);
if (!GTK_IS_IMAGE (image))
return;
image = menu_tool_button_clone_image (image);
gtk_tool_button_set_icon_widget (tool_button, image);
gtk_widget_show (image);
/* If the menu item is a proxy for a GtkAction, extract
* the action's tooltip and use it as our own tooltip. */
action = gtk_activatable_get_related_action (
GTK_ACTIVATABLE (menu_item));
if (action != NULL)
g_object_get (action, "tooltip", &tooltip, NULL);
gtk_widget_set_tooltip_text (GTK_WIDGET (tool_button), tooltip);
g_free (tooltip);
}
static void
menu_tool_button_get_preferred_height (GtkWidget *widget,
gint *minimal_height,
gint *natural_height)
{
GTK_WIDGET_CLASS (e_menu_tool_button_parent_class)->
get_preferred_height (widget, minimal_height, natural_height);
}
static void
menu_tool_button_get_preferred_width (GtkWidget *widget,
gint *minimal_width,
gint *natural_width)
{
gint minimum_width, min_height, nat_height;
GTK_WIDGET_CLASS (e_menu_tool_button_parent_class)->
get_preferred_width (widget, minimal_width, natural_width);
/* XXX This is a hack. This widget is only used for the New
* button in the main window toolbar. The New button is
* pretty important, but the word "New" is pretty short
* (in English, anyway) and this results in a small screen
* target when using a "text below item" toolbar style.
*
* We can't go hard-coding a width, but we -can- use a
* heuristic based on the toolbar button height. */
menu_tool_button_get_preferred_height (widget, &min_height, &nat_height);
minimum_width = min_height * 2;
*minimal_width = *natural_width = MAX (minimum_width, *minimal_width);
}
static void
menu_tool_button_clicked (GtkToolButton *tool_button)
{
GtkMenuItem *menu_item;
GtkMenuToolButton *menu_tool_button;
menu_tool_button = GTK_MENU_TOOL_BUTTON (tool_button);
menu_item = menu_tool_button_get_first_menu_item (menu_tool_button);
if (GTK_IS_MENU_ITEM (menu_item))
gtk_menu_item_activate (menu_item);
}
static void
e_menu_tool_button_class_init (EMenuToolButtonClass *class)
{
GtkWidgetClass *widget_class;
GtkToolButtonClass *tool_button_class;
widget_class = GTK_WIDGET_CLASS (class);
widget_class->get_preferred_height = menu_tool_button_get_preferred_height;
widget_class->get_preferred_width = menu_tool_button_get_preferred_width;
tool_button_class = GTK_TOOL_BUTTON_CLASS (class);
tool_button_class->clicked = menu_tool_button_clicked;
}
static void
e_menu_tool_button_init (EMenuToolButton *button)
{
g_signal_connect (
button, "notify::menu",
G_CALLBACK (menu_tool_button_update_button), NULL);
}
GtkToolItem *
e_menu_tool_button_new (const gchar *label)
{
return g_object_new (E_TYPE_MENU_TOOL_BUTTON, "label", label, NULL);
}
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