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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
*
* Copyright (C) 2018 Canonical Ltd.
*
* 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#include "cc-sound-resources.h"
#include "cc-balance-slider.h"
#include "gvc-channel-map-private.h"
struct _CcBalanceSlider
{
GtkBox parent_instance;
GtkAdjustment *adjustment;
GvcChannelMap *channel_map;
guint volume_changed_handler_id;
};
G_DEFINE_TYPE (CcBalanceSlider, cc_balance_slider, GTK_TYPE_BOX)
static void
changed_cb (CcBalanceSlider *self)
{
gdouble value;
const pa_channel_map *pa_map;
pa_cvolume pa_volume;
if (self->channel_map == NULL)
return;
value = gtk_adjustment_get_value (self->adjustment);
pa_map = gvc_channel_map_get_pa_channel_map (self->channel_map);
pa_volume = *gvc_channel_map_get_cvolume (self->channel_map);
pa_cvolume_set_balance (&pa_volume, pa_map, value);
gvc_channel_map_volume_changed (self->channel_map, &pa_volume, TRUE);
}
static void
volume_changed_cb (CcBalanceSlider *self)
{
const gdouble *volumes;
volumes = gvc_channel_map_get_volume (self->channel_map);
g_signal_handlers_block_by_func (self->adjustment, volume_changed_cb, self);
gtk_adjustment_set_value (self->adjustment, volumes[BALANCE]);
g_signal_handlers_unblock_by_func (self->adjustment, volume_changed_cb, self);
}
static void
cc_balance_slider_dispose (GObject *object)
{
CcBalanceSlider *self = CC_BALANCE_SLIDER (object);
g_clear_object (&self->channel_map);
G_OBJECT_CLASS (cc_balance_slider_parent_class)->dispose (object);
}
void
cc_balance_slider_class_init (CcBalanceSliderClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
object_class->dispose = cc_balance_slider_dispose;
gtk_widget_class_set_template_from_resource (widget_class, "/org/gnome/control-center/sound/cc-balance-slider.ui");
gtk_widget_class_bind_template_child (widget_class, CcBalanceSlider, adjustment);
gtk_widget_class_bind_template_callback (widget_class, changed_cb);
}
void
cc_balance_slider_init (CcBalanceSlider *self)
{
g_resources_register (cc_sound_get_resource ());
gtk_widget_init_template (GTK_WIDGET (self));
}
void
cc_balance_slider_set_channel_map (CcBalanceSlider *self,
GvcChannelMap *channel_map)
{
g_return_if_fail (CC_IS_BALANCE_SLIDER (self));
if (self->channel_map != NULL)
{
g_signal_handler_disconnect (self->channel_map, self->volume_changed_handler_id);
self->volume_changed_handler_id = 0;
}
g_clear_object (&self->channel_map);
if (channel_map != NULL)
{
self->channel_map = g_object_ref (channel_map);
self->volume_changed_handler_id = g_signal_connect_object (channel_map,
"volume-changed",
G_CALLBACK (volume_changed_cb),
self, G_CONNECT_SWAPPED);
volume_changed_cb (self);
}
}
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