/*
* Copyright (C) 2003 Christian Persch
*
* 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, 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.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "ephy-zoom-control.h"
#include "ephy-marshal.h"
#include "ephy-zoom.h"
#include <gtk/gtk.h>
#include <gtk/gtkmenu.h>
#include <gtk/gtkoptionmenu.h>
#include <bonobo/bonobo-i18n.h>
/**
* Private data
*/
struct _EphyZoomControlPrivate {
GtkWidget *option_menu;
float zoom;
guint handler_id;
};
enum
{
PROP_0,
PROP_ZOOM
};
enum
{
ZOOM_TO_LEVEL_SIGNAL,
LAST_SIGNAL
};
static guint signals[LAST_SIGNAL];
static GObjectClass *parent_class = NULL;
static void ephy_zoom_control_class_init (EphyZoomControlClass *klass);
static void ephy_zoom_control_init (EphyZoomControl *control);
static void ephy_zoom_control_finalize (GObject *o);
#define MENU_ID "ephy-zoom-control-menu-id"
/**
* EphyZoomControl object
*/
GType
ephy_zoom_control_get_type (void)
{
static GType ephy_zoom_control_type = 0;
if (ephy_zoom_control_type == 0)
{
static const GTypeInfo our_info =
{
sizeof (EphyZoomControlClass),
NULL, /* base_init */
NULL, /* base_finalize */
(GClassInitFunc) ephy_zoom_control_class_init,
NULL,
NULL, /* class_data */
sizeof (EphyZoomControl),
0, /* n_preallocs */
(GInstanceInitFunc) ephy_zoom_control_init,
};
ephy_zoom_control_type = g_type_register_static (EGG_TYPE_TOOL_ITEM,
"EphyZoomControl",
&our_info, 0);
}
return ephy_zoom_control_type;
}
static void
proxy_menu_activate_cb (GtkMenuItem *menu_item, gpointer data)
{
EphyZoomControl *control;
gint index;
float zoom;
g_return_if_fail (EPHY_IS_ZOOM_CONTROL (data));
control = EPHY_ZOOM_CONTROL (data);
/* menu item was toggled OFF */
if (!gtk_check_menu_item_get_active (GTK_CHECK_MENU_ITEM (menu_item))) return;
index = GPOINTER_TO_INT (g_object_get_data (G_OBJECT (menu_item), "zoom-level"));
zoom = zoom_levels[index].level;
if (zoom != control->priv->zoom)
{
g_signal_emit (control, signals[ZOOM_TO_LEVEL_SIGNAL], 0, zoom);
}
}
static gboolean
ephy_zoom_control_create_menu_proxy (EggToolItem *item)
{
EphyZoomControl *control = EPHY_ZOOM_CONTROL (item);
EphyZoomControlPrivate *p = control->priv;
GtkWidget *menu, *menu_item;
GSList *group = NULL;
gint i;
menu = gtk_menu_new ();
for (i = 0; i < n_zoom_levels; i++)
{
menu_item = gtk_radio_menu_item_new_with_label (group, _(zoom_levels[i].name));
group = gtk_radio_menu_item_get_group (GTK_RADIO_MENU_ITEM (menu_item));
gtk_check_menu_item_set_active (GTK_CHECK_MENU_ITEM (menu_item),
p->zoom == zoom_levels[i].level);
gtk_widget_show (menu_item);
gtk_menu_shell_append (GTK_MENU_SHELL (menu), menu_item);
g_object_set_data (G_OBJECT (menu_item), "zoom-level", GINT_TO_POINTER (i));
g_signal_connect_object (G_OBJECT (menu_item), "activate",
G_CALLBACK (proxy_menu_activate_cb), control, 0);
}
menu_item = gtk_menu_item_new_with_mnemonic (_("_Zoom"));
gtk_menu_item_set_submenu (GTK_MENU_ITEM (menu_item), menu);
gtk_widget_show (menu);
gtk_widget_show (menu_item);
g_object_ref (menu_item);
gtk_object_sink (GTK_OBJECT (menu_item));
egg_tool_item_set_proxy_menu_item (item, MENU_ID, menu_item);
g_object_unref (menu_item);
return TRUE;
}
static void
option_menu_changed_cb (GtkOptionMenu *option_menu, EphyZoomControl *control)
{
gint index;
float zoom;
index = gtk_option_menu_get_history (option_menu);
zoom = zoom_levels[index].level;
if (zoom != control->priv->zoom)
{
g_signal_emit (control, signals[ZOOM_TO_LEVEL_SIGNAL], 0, zoom);
}
}
static void
sync_zoom_cb (EphyZoomControl *control, GParamSpec *pspec, gpointer data)
{
EphyZoomControlPrivate *p = control->priv;
guint index;
index = ephy_zoom_get_zoom_level_index (p->zoom);
g_signal_handler_block (p->option_menu, p->handler_id);
gtk_option_menu_set_history (GTK_OPTION_MENU (p->option_menu), index);
g_signal_handler_unblock (p->option_menu, p->handler_id);
}
static void
ephy_zoom_control_init (EphyZoomControl *control)
{
EphyZoomControlPrivate *p;
GtkWidget *item, *menu, *box;
guint i;
p = g_new0 (EphyZoomControlPrivate, 1);
control->priv = p;
p->zoom = 1.0;
p->option_menu = gtk_option_menu_new ();
menu = gtk_menu_new ();
for (i = 0; i < n_zoom_levels; i++)
{
item = gtk_menu_item_new_with_label (_(zoom_levels[i].name));
gtk_menu_shell_append (GTK_MENU_SHELL (menu),item);
gtk_widget_show (item);
}
gtk_option_menu_set_menu (GTK_OPTION_MENU (p->option_menu), menu);
gtk_widget_show (menu);
gtk_widget_show (p->option_menu);
i = ephy_zoom_get_zoom_level_index (p->zoom);
gtk_option_menu_set_history (GTK_OPTION_MENU (p->option_menu), i);
g_object_ref (p->option_menu);
gtk_object_sink (GTK_OBJECT (p->option_menu));
box = gtk_vbox_new (TRUE, 0);
gtk_box_pack_start (GTK_BOX (box), p->option_menu, TRUE, FALSE, 0);
gtk_widget_show (box);
gtk_container_add (GTK_CONTAINER (control), box);
p->handler_id = g_signal_connect (p->option_menu, "changed",
G_CALLBACK (option_menu_changed_cb), control);
g_signal_connect_object (control, "notify::zoom",
G_CALLBACK (sync_zoom_cb), NULL, 0);
}
static void
ephy_zoom_control_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
EphyZoomControl *control;
EphyZoomControlPrivate *p;
control = EPHY_ZOOM_CONTROL (object);
p = control->priv;
switch (prop_id)
{
case PROP_ZOOM:
p->zoom = g_value_get_float (value);
g_object_notify (object, "zoom");
break;
}
}
static void
ephy_zoom_control_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
EphyZoomControl *control;
EphyZoomControlPrivate *p;
control = EPHY_ZOOM_CONTROL (object);
p = control->priv;
switch (prop_id)
{
case PROP_ZOOM:
g_value_set_float (value, p->zoom);
break;
}
}
static void
ephy_zoom_control_class_init (EphyZoomControlClass *klass)
{
GObjectClass *object_class;
EggToolItemClass *tool_item_class;
parent_class = g_type_class_peek_parent (klass);
object_class = (GObjectClass *)klass;
tool_item_class = (EggToolItemClass *)klass;
object_class->set_property = ephy_zoom_control_set_property;
object_class->get_property = ephy_zoom_control_get_property;
object_class->finalize = ephy_zoom_control_finalize;
tool_item_class->create_menu_proxy = ephy_zoom_control_create_menu_proxy;
g_object_class_install_property (object_class,
PROP_ZOOM,
g_param_spec_float ("zoom",
"Zoom",
"Zoom level to display in the item.",
ZOOM_MINIMAL,
ZOOM_MAXIMAL,
1.0,
G_PARAM_READWRITE));
signals[ZOOM_TO_LEVEL_SIGNAL] =
g_signal_new ("zoom_to_level",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (EphyZoomControlClass,
zoom_to_level),
NULL, NULL,
g_cclosure_marshal_VOID__FLOAT,
G_TYPE_NONE,
1,
G_TYPE_FLOAT);
}
static void
ephy_zoom_control_finalize (GObject *o)
{
EphyZoomControl *control = EPHY_ZOOM_CONTROL (o);
g_object_unref (control->priv->option_menu);
g_free (control->priv);
G_OBJECT_CLASS (parent_class)->finalize (o);
}
void
ephy_zoom_control_set_zoom_level (EphyZoomControl *control, float zoom)
{
g_return_if_fail (EPHY_IS_ZOOM_CONTROL (control));
if (zoom < ZOOM_MINIMAL || zoom > ZOOM_MAXIMAL) return;
control->priv->zoom = zoom;
g_object_notify (G_OBJECT (control), "zoom");
}
float
ephy_zoom_control_get_zoom_level (EphyZoomControl *control)
{
g_return_val_if_fail (EPHY_IS_ZOOM_CONTROL (control), 1.0);
return control->priv->zoom;
}
