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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"
static gpointer parent_class;
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;
GList *children;
menu = gtk_menu_tool_button_get_menu (menu_tool_button);
if (!GTK_IS_MENU (menu))
return NULL;
/* XXX GTK+ 2.12 provides no accessor function. */
children = GTK_MENU_SHELL (menu)->children;
if (children == NULL)
return NULL;
return GTK_MENU_ITEM (children->data);
}
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_size_request (GtkWidget *widget,
GtkRequisition *requisition)
{
gint minimum_width;
/* Chain up to parent's size_request() method. */
GTK_WIDGET_CLASS (parent_class)->size_request (widget, requisition);
/* 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. */
minimum_width = requisition->height * 2;
requisition->width = MAX (minimum_width, requisition->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
menu_tool_button_class_init (EMenuToolButtonClass *class)
{
GtkWidgetClass *widget_class;
GtkToolButtonClass *tool_button_class;
parent_class = g_type_class_peek_parent (class);
widget_class = GTK_WIDGET_CLASS (class);
widget_class->size_request = menu_tool_button_size_request;
tool_button_class = GTK_TOOL_BUTTON_CLASS (class);
tool_button_class->clicked = menu_tool_button_clicked;
}
static void
menu_tool_button_init (EMenuToolButton *button)
{
g_signal_connect (
button, "notify::menu",
G_CALLBACK (menu_tool_button_update_button), NULL);
}
GType
e_menu_tool_button_get_type (void)
{
static GType type = 0;
if (G_UNLIKELY (type == 0)) {
const GTypeInfo type_info = {
sizeof (EMenuToolButtonClass),
(GBaseInitFunc) NULL,
(GBaseFinalizeFunc) NULL,
(GClassInitFunc) menu_tool_button_class_init,
(GClassFinalizeFunc) NULL,
NULL, /* class_data */
sizeof (EMenuToolButton),
0, /* n_preallocs */
(GInstanceInitFunc) menu_tool_button_init,
NULL /* value_table */
};
type = g_type_register_static (
GTK_TYPE_MENU_TOOL_BUTTON, "EMenuToolButton",
&type_info, 0);
}
return type;
}
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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