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/*
* This file is a part of hildon
*
* Copyright (C) 2005, 2006 Nokia Corporation, all rights reserved.
*
* Contact: Michael Dominic Kostrzewa <michael.kostrzewa@nokia.com>
*
* This library 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; version 2.1 of
* the License.
*
* This library 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 this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA
*
*/
/**
* SECTION:hildon-vvolumebar
* @short_description: A widget that displays a vertical volume bar.
* @see_also: #HildonVolumebar, #HildonHVolumebar
*
* #HildonVVolumebar is a subclass of #HildonVolumebar. It displays a
* vertical volume bar that allows increasing or decreasing volume
* within a predefined range, and muting when users click the mute icon.
*
* Here is an example that creates a vertical volume bar and connects
* both its signals.
* <example>
* <title>HildonVVolumebar example</title>
* <programlisting>
* GtkWidget *volbar = hildon_vvolumebar_new ();
* g_signal_connect (G_OBJECT (volbar), "mute_toggled", G_CALLBACK (mute_toggle), NULL);
* g_signal_connect (G_OBJECT (volbar), "level_changed", G_CALLBACK (level_change), NULL);
* </programlisting>
* </example>
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "hildon-vvolumebar.h"
#include <gtk/gtk.h>
#include "hildon-volumebar-range.h"
#include "hildon-volumebar-private.h"
/* Volume bar */
#define DEFAULT_BAR_WIDTH 58
#define MINIMUM_BAR_HEIGHT 165
/* Toggle button */
#define DEFAULT_VERTICAL_TBUTTON_WIDTH 26
#define DEFAULT_VERTICAL_TBUTTON_HEIGHT 26
#define DEFAULT_ENDING_SIZE 20
/* Gap to leave for mute button */
#define HORIZONTAL_MUTE_GAP 16
#define VERTICAL_MUTE_GAP 6
static HildonVolumebarClass* parent_class;
static void
hildon_vvolumebar_class_init (HildonVVolumebarClass * klass);
static void
hildon_vvolumebar_init (HildonVVolumebar * vvolumebar);
static gboolean
hildon_vvolumebar_expose (GtkWidget * widget,
GdkEventExpose * event);
static void
hildon_vvolumebar_size_request (GtkWidget * widget,
GtkRequisition * requisition);
static void
hildon_vvolumebar_size_allocate (GtkWidget * widget,
GtkAllocation * allocation);
/**
* hildon_vvolumebar_get_type:
*
* Initializes and returns the type of a hildon vvolumebar.
*
* @Returns: GType of #HildonVVolumebar
*/
GType G_GNUC_CONST
hildon_vvolumebar_get_type (void)
{
static GType type = 0;
if (!type) {
static const GTypeInfo info = {
sizeof (HildonVVolumebarClass),
NULL, /* base_init */
NULL, /* base_finalize */
(GClassInitFunc) hildon_vvolumebar_class_init, /* class_init */
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (HildonVVolumebar),
0,
(GInstanceInitFunc) hildon_vvolumebar_init,
};
type =
g_type_register_static (HILDON_TYPE_VOLUMEBAR,
"HildonVVolumebar", &info, 0);
}
return type;
}
static void
hildon_vvolumebar_class_init (HildonVVolumebarClass *klass)
{
GtkWidgetClass *volumebar_class = GTK_WIDGET_CLASS(klass);
parent_class = g_type_class_peek_parent(klass);
volumebar_class->size_request = hildon_vvolumebar_size_request;
volumebar_class->size_allocate = hildon_vvolumebar_size_allocate;
volumebar_class->expose_event = hildon_vvolumebar_expose;
}
static void
hildon_vvolumebar_init (HildonVVolumebar *vvolumebar)
{
HildonVolumebarPrivate *priv;
priv = HILDON_VOLUMEBAR_GET_PRIVATE (vvolumebar);
g_assert (priv);
priv->volumebar = HILDON_VOLUMEBAR_RANGE (hildon_volumebar_range_new
(GTK_ORIENTATION_VERTICAL));
GTK_WIDGET_UNSET_FLAGS (GTK_WIDGET (vvolumebar), GTK_CAN_FOCUS);
gtk_widget_set_parent (GTK_WIDGET (priv->tbutton), GTK_WIDGET (vvolumebar));
gtk_widget_set_parent (GTK_WIDGET (priv->volumebar), GTK_WIDGET (vvolumebar));
gtk_scale_set_draw_value (GTK_SCALE (priv->volumebar), FALSE);
/* Signals */
g_signal_connect_swapped(G_OBJECT(priv->volumebar), "value-changed",
G_CALLBACK(hildon_volumebar_level_change),
vvolumebar);
g_signal_connect_swapped(priv->tbutton, "toggled",
G_CALLBACK(hildon_volumebar_mute_toggled), vvolumebar);
/* FIXME Not sure why this is here */
gtk_widget_show (GTK_WIDGET (priv->volumebar));
}
/**
* hildon_vvolumebar_new:
*
* Creates a new #HildonVVolumebar widget.
*
* Returns: a new #HildonVVolumebar
*/
GtkWidget*
hildon_vvolumebar_new (void)
{
return GTK_WIDGET (g_object_new(HILDON_TYPE_VVOLUMEBAR, NULL));
}
static gboolean
hildon_vvolumebar_expose (GtkWidget *widget,
GdkEventExpose *event)
{
HildonVolumebarPrivate *priv;
priv = HILDON_VOLUMEBAR_GET_PRIVATE(HILDON_VOLUMEBAR(widget));
g_assert (priv);
if (GTK_WIDGET_DRAWABLE (widget)) {
/* Paint background */
gtk_paint_box (widget->style, widget->window,
GTK_WIDGET_STATE (priv->volumebar), GTK_SHADOW_OUT,
NULL, widget, "background",
widget->allocation.x,
widget->allocation.y,
widget->allocation.width,
widget->allocation.height);
/* The contents of the widget can paint themselves */
(*GTK_WIDGET_CLASS (parent_class)->expose_event) (widget, event);
}
return FALSE;
}
static void
hildon_vvolumebar_size_request (GtkWidget *widget,
GtkRequisition *requisition)
{
requisition->height = MINIMUM_BAR_HEIGHT;
requisition->width = DEFAULT_BAR_WIDTH;
}
static void
hildon_vvolumebar_size_allocate (GtkWidget *widget,
GtkAllocation *allocation)
{
HildonVolumebarPrivate *priv;
GtkAllocation range_allocation, button_allocation;
priv = HILDON_VOLUMEBAR_GET_PRIVATE(widget);
g_assert (priv);
/* Center the widget horizontally */
if (allocation->width > DEFAULT_BAR_WIDTH) {
allocation->x +=
(allocation->width - DEFAULT_BAR_WIDTH) / 2;
allocation->width = DEFAULT_BAR_WIDTH;
}
GTK_WIDGET_CLASS (parent_class)->size_allocate (widget, allocation);
if (priv->volumebar && GTK_WIDGET_VISIBLE (priv->volumebar)) {
/* Allocate space for the slider */
range_allocation.x = allocation->x;
range_allocation.y = allocation->y + DEFAULT_ENDING_SIZE;
range_allocation.width = DEFAULT_BAR_WIDTH;
if (priv->tbutton && GTK_WIDGET_VISIBLE (priv->tbutton))
{
/* Leave room for the mute button */
range_allocation.height = MAX (0,
allocation->height
- 2 * DEFAULT_ENDING_SIZE
- DEFAULT_VERTICAL_TBUTTON_HEIGHT
- VERTICAL_MUTE_GAP);
}
else
{
range_allocation.height = MAX (0,
allocation->height
- 2 * DEFAULT_ENDING_SIZE);
}
gtk_widget_size_allocate (GTK_WIDGET (priv->volumebar),
&range_allocation);
}
if (priv->tbutton && GTK_WIDGET_VISIBLE (priv->tbutton)) {
/* Allocate space for the mute button */
button_allocation.x = allocation->x + HORIZONTAL_MUTE_GAP;
button_allocation.y = allocation->y + allocation->height -
VERTICAL_MUTE_GAP - 2 * DEFAULT_ENDING_SIZE;
button_allocation.width = DEFAULT_VERTICAL_TBUTTON_WIDTH;
button_allocation.height = DEFAULT_VERTICAL_TBUTTON_HEIGHT;
gtk_widget_size_allocate (GTK_WIDGET (priv->tbutton),
&button_allocation);
}
}
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