/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */
/* e-dropdown-menu.c
*
* Copyright (C) 2001 Ximian, Inc.
*
* This program 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 2 of the
* License, or (at your option) any later version.
*
* 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public
* License along with this program; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*
* Authors:
* Ettore Perazzoli <ettore@ximian.com>
* Damon Chaplin <damon@ximian.com>
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <gtk/gtk.h>
#include <gal/util/e-util.h>
#include "e-dropdown-button.h"
struct _EDropdownButtonPrivate {
GtkAccelGroup *accel_group;
GtkWidget *menu;
};
#define PARENT_TYPE gtk_button_get_type ()
static GtkButtonClass *parent_class = NULL;
/* Callback to position the pop-up menu. */
static void
menu_position_cb (GtkMenu *menu,
int *x,
int *y,
void *data)
{
EDropdownButton *dropdown_button;
EDropdownButtonPrivate *priv;
GtkRequisition menu_requisition;
int max_x, max_y;
dropdown_button = E_DROPDOWN_BUTTON (data);
priv = dropdown_button->priv;
/* Calculate our preferred position. */
gdk_window_get_origin (GTK_WIDGET (dropdown_button)->window, x, y);
*y += GTK_WIDGET (dropdown_button)->allocation.height;
/* Now make sure we are on the screen. */
gtk_widget_size_request (GTK_WIDGET (priv->menu), &menu_requisition);
max_x = MAX (0, gdk_screen_width () - menu_requisition.width);
max_y = MAX (0, gdk_screen_height () - menu_requisition.height);
*x = CLAMP (*x, 0, max_x);
*y = CLAMP (*y, 0, max_y);
}
/* GtkObject methods. */
static void
impl_destroy (GtkObject *object)
{
EDropdownButton *dropdown_button;
EDropdownButtonPrivate *priv;
dropdown_button = E_DROPDOWN_BUTTON (object);
priv = dropdown_button->priv;
gtk_accel_group_unref (priv->accel_group);
gtk_widget_destroy (priv->menu);
g_free (priv);
}
/* GtkButton methods. */
static void
impl_clicked (GtkButton *button)
{
EDropdownButton *dropdown_button;
EDropdownButtonPrivate *priv;
dropdown_button = E_DROPDOWN_BUTTON (button);
priv = dropdown_button->priv;
if (GTK_BUTTON_CLASS (parent_class)->clicked != NULL)
(* GTK_BUTTON_CLASS (parent_class)->clicked) (button);
gtk_menu_popup (GTK_MENU (priv->menu), NULL, NULL,
menu_position_cb, dropdown_button,
1, GDK_CURRENT_TIME);
}
static void
class_init (EDropdownButtonClass *klass)
{
GtkObjectClass *object_class;
GtkButtonClass *button_class;
object_class = GTK_OBJECT_CLASS (klass);
button_class = GTK_BUTTON_CLASS (klass);
object_class->destroy = impl_destroy;
button_class->clicked = impl_clicked;
parent_class = gtk_type_class (gtk_button_get_type ());
}
static void
init (EDropdownButton *dropdown_button)
{
EDropdownButtonPrivate *priv;
priv = g_new (EDropdownButtonPrivate, 1);
priv->accel_group = gtk_accel_group_new ();
priv->menu = NULL;
dropdown_button->priv = priv;
}
void
e_dropdown_button_construct (EDropdownButton *dropdown_button,
const char *label_text,
GtkMenu *menu,
GnomeUIInfo *ui_info,
void *data)
{
EDropdownButtonPrivate *priv;
GtkWidget *hbox;
GtkWidget *arrow;
GtkWidget *label;
unsigned int accel_key;
g_return_if_fail (dropdown_button != NULL);
g_return_if_fail (E_IS_DROPDOWN_BUTTON (dropdown_button));
g_return_if_fail (label_text != NULL);
g_return_if_fail (menu != NULL);
g_return_if_fail (GTK_IS_MENU (menu));
g_return_if_fail (ui_info != NULL);
priv = dropdown_button->priv;
hbox = gtk_hbox_new (FALSE, 2);
gtk_container_add (GTK_CONTAINER (dropdown_button), hbox);
gtk_widget_show (hbox);
label = gtk_label_new ("");
accel_key = gtk_label_parse_uline (GTK_LABEL (label), label_text);
gtk_box_pack_start (GTK_BOX (hbox), label, TRUE, TRUE, 0);
gtk_widget_show (label);
gtk_widget_add_accelerator (GTK_WIDGET (dropdown_button), "clicked",
priv->accel_group, accel_key, GDK_MOD1_MASK, 0);
arrow = gtk_arrow_new (GTK_ARROW_DOWN, GTK_SHADOW_OUT);
gtk_box_pack_start (GTK_BOX (hbox), arrow, FALSE, FALSE, 2);
gtk_widget_show (arrow);
priv->menu = GTK_WIDGET (menu);
gnome_app_fill_menu_with_data (GTK_MENU_SHELL (priv->menu), ui_info,
priv->accel_group, TRUE, 0, data);
}
/**
* e_dropdown_button_new:
* @label_text:
* @menu:
* @ui_info:
* @data:
*
* Create a new dropdown button.
*
* Return value:
**/
GtkWidget *
e_dropdown_button_new (const char *label_text,
GtkMenu *menu,
GnomeUIInfo *ui_info,
void *data)
{
GtkWidget *widget;
g_return_val_if_fail (label_text != NULL, NULL);
g_return_val_if_fail (menu != NULL, NULL);
g_return_val_if_fail (GTK_IS_MENU (menu), NULL);
g_return_val_if_fail (ui_info != NULL, NULL);
widget = gtk_type_new (e_dropdown_button_get_type ());
e_dropdown_button_construct (E_DROPDOWN_BUTTON (widget), label_text, menu, ui_info, data);
return widget;
}
E_MAKE_TYPE (e_dropdown_button, "EDropdownButton", EDropdownButton, class_init, init, PARENT_TYPE)
