/*
* Copyright © 2003, 2004 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
#include "config.h"
#include <glib/gi18n.h>
#include "ephy-zoom-control.h"
#include "ephy-zoom.h"
/**
* SECTION:ephy-zoom-control
* @short_description: A #GtkToolItem implementing a zoom control
*
* #EphyZoomControl implements the zoom control used in Epiphany's toolbar.
*/
#define EPHY_ZOOM_CONTROL_GET_PRIVATE(object)(G_TYPE_INSTANCE_GET_PRIVATE ((object), EPHY_TYPE_ZOOM_CONTROL, EphyZoomControlPrivate))
struct _EphyZoomControlPrivate
{
GtkComboBox *combo;
float zoom;
guint handler_id;
};
enum
{
PROP_0,
PROP_ZOOM
};
enum
{
ZOOM_TO_LEVEL_SIGNAL,
LAST_SIGNAL
};
static guint signals[LAST_SIGNAL];
static void ephy_zoom_control_class_init (EphyZoomControlClass *klass);
static void ephy_zoom_control_init (EphyZoomControl *control);
static void ephy_zoom_control_dispose (GObject *o);
G_DEFINE_TYPE (EphyZoomControl, ephy_zoom_control, GTK_TYPE_TOOL_ITEM)
static void
combo_changed_cb (GtkComboBox *combo, EphyZoomControl *control)
{
gint index;
float zoom;
index = gtk_combo_box_get_active (combo);
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->combo, p->handler_id);
gtk_combo_box_set_active (p->combo, index);
g_signal_handler_unblock (p->combo, p->handler_id);
}
static void
ephy_zoom_control_init (EphyZoomControl *control)
{
EphyZoomControlPrivate *p;
GtkComboBox *combo;
GtkWidget *vbox;
guint i;
p = EPHY_ZOOM_CONTROL_GET_PRIVATE (control);
control->priv = p;
p->zoom = 1.0;
combo = p->combo = GTK_COMBO_BOX (gtk_combo_box_new_text ());
for (i = 0; i < n_zoom_levels; i++)
{
gtk_combo_box_append_text (combo, _(zoom_levels[i].name));
}
p->combo = combo;
gtk_combo_box_set_focus_on_click (GTK_COMBO_BOX (p->combo), FALSE);
g_object_ref_sink (combo);
gtk_widget_show (GTK_WIDGET (combo));
i = ephy_zoom_get_zoom_level_index (p->zoom);
gtk_combo_box_set_active (combo, i);
vbox = gtk_vbox_new (TRUE, 0);
gtk_box_pack_start (GTK_BOX (vbox), GTK_WIDGET (combo), TRUE, FALSE, 0);
gtk_widget_show (vbox);
gtk_container_add (GTK_CONTAINER (control), vbox);
p->handler_id = g_signal_connect (combo, "changed",
G_CALLBACK (combo_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);
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;
GtkToolItemClass *tool_item_class;
object_class = (GObjectClass *)klass;
tool_item_class = (GtkToolItemClass *)klass;
object_class->set_property = ephy_zoom_control_set_property;
object_class->get_property = ephy_zoom_control_get_property;
object_class->dispose = ephy_zoom_control_dispose;
/**
* EphyZoomControl:zoom:
*
* The current value of #EphyZoomControl, as a float.
*/
g_object_class_install_property (object_class,
PROP_ZOOM,
g_param_spec_float ("zoom", NULL, NULL,
ZOOM_MINIMAL,
ZOOM_MAXIMAL,
1.0,
G_PARAM_READWRITE | G_PARAM_STATIC_NAME | G_PARAM_STATIC_NICK | G_PARAM_STATIC_BLURB));
/**
* EphyZoomControl::zoom-to-level:
* @control: the object on which the signal is emitted
* @level: new zoom level
*
* Emitted when the user changes the value of the #EphyZoomControl.
*/
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);
g_type_class_add_private (object_class, sizeof (EphyZoomControlPrivate));
}
static void
ephy_zoom_control_dispose (GObject *o)
{
EphyZoomControl *control = EPHY_ZOOM_CONTROL (o);
if (control->priv->combo)
{
g_object_unref (control->priv->combo);
control->priv->combo = NULL;
}
G_OBJECT_CLASS (ephy_zoom_control_parent_class)->dispose (o);
}
/**
* ephy_zoom_control_set_zoom_level:
* @control: an #EphyZoomControl
* @zoom: the new value for the zoom level
*
* Sets the zoom level of @control.
**/
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");
}
/**
* ephy_zoom_control_get_zoom_level:
* @control: an #EphyZoomControl
*
* Get the current zoom level of @control.
*
* Returns: the zoom level as a float
**/
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;
}
