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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 <glib/gi18n.h>
#include <math.h>
#include <pulse/pulseaudio.h>
#include <gvc-mixer-control.h>
#include "cc-sound-resources.h"
#include "cc-volume-slider.h"
struct _CcVolumeSlider
{
GtkBox parent_instance;
GtkToggleButton *mute_button;
GtkImage *stream_type_icon;
GtkAdjustment *volume_adjustment;
GtkScale *volume_scale;
gboolean is_amplified;
GvcMixerControl *mixer_control;
GvcMixerStream *stream;
guint notify_volume_handler_id;
guint notify_is_muted_handler_id;
};
G_DEFINE_TYPE (CcVolumeSlider, cc_volume_slider, GTK_TYPE_BOX)
static void
update_volume_icon (CcVolumeSlider *self)
{
const gchar *icon_name = NULL;
gdouble volume, fraction;
volume = gtk_adjustment_get_value (self->volume_adjustment);
fraction = (100.0 * volume) / gtk_adjustment_get_upper (self->volume_adjustment);
if (gtk_toggle_button_get_active (self->mute_button))
icon_name = "audio-volume-muted-symbolic";
else if (fraction > 0.0 && fraction < 30.0)
icon_name = "audio-volume-low-symbolic";
else if (fraction > 30.0 && fraction < 70.0)
icon_name = "audio-volume-medium-symbolic";
else
icon_name = "audio-volume-high-symbolic";
gtk_image_set_from_icon_name (self->stream_type_icon, icon_name, GTK_ICON_SIZE_BUTTON);
}
static void
volume_changed_cb (CcVolumeSlider *self)
{
gdouble volume, rounded;
if (self->stream == NULL)
return;
volume = gtk_adjustment_get_value (self->volume_adjustment);
rounded = round (volume);
gtk_toggle_button_set_active (self->mute_button, volume == 0.0);
if (gvc_mixer_stream_set_volume (self->stream, (pa_volume_t) rounded))
gvc_mixer_stream_push_volume (self->stream);
update_volume_icon (self);
}
static void
notify_volume_cb (CcVolumeSlider *self)
{
g_signal_handlers_block_by_func (self->volume_adjustment, volume_changed_cb, self);
if (gtk_toggle_button_get_active (self->mute_button))
gtk_adjustment_set_value (self->volume_adjustment, 0.0);
else
gtk_adjustment_set_value (self->volume_adjustment, gvc_mixer_stream_get_volume (self->stream));
g_signal_handlers_unblock_by_func (self->volume_adjustment, volume_changed_cb, self);
}
static void
update_ranges (CcVolumeSlider *self)
{
gdouble vol_max_norm;
if (self->mixer_control == NULL)
return;
vol_max_norm = gvc_mixer_control_get_vol_max_norm (self->mixer_control);
gtk_scale_clear_marks (self->volume_scale);
if (self->is_amplified)
{
gtk_adjustment_set_upper (self->volume_adjustment, gvc_mixer_control_get_vol_max_amplified (self->mixer_control));
gtk_scale_add_mark (self->volume_scale,
vol_max_norm,
GTK_POS_BOTTOM,
C_("volume", "100%"));
}
else
{
gtk_adjustment_set_upper (self->volume_adjustment, vol_max_norm);
}
gtk_adjustment_set_page_increment (self->volume_adjustment, vol_max_norm / 100.0);
if (self->stream)
notify_volume_cb (self);
}
static void
mute_button_toggled_cb (CcVolumeSlider *self)
{
if (self->stream == NULL)
return;
gvc_mixer_stream_change_is_muted (self->stream, gtk_toggle_button_get_active (self->mute_button));
update_volume_icon (self);
}
static void
notify_is_muted_cb (CcVolumeSlider *self)
{
g_signal_handlers_block_by_func (self->mute_button, mute_button_toggled_cb, self);
gtk_toggle_button_set_active (self->mute_button, gvc_mixer_stream_get_is_muted (self->stream));
g_signal_handlers_unblock_by_func (self->mute_button, mute_button_toggled_cb, self);
notify_volume_cb (self);
}
static void
cc_volume_slider_dispose (GObject *object)
{
CcVolumeSlider *self = CC_VOLUME_SLIDER (object);
g_clear_object (&self->mixer_control);
g_clear_object (&self->stream);
G_OBJECT_CLASS (cc_volume_slider_parent_class)->dispose (object);
}
void
cc_volume_slider_class_init (CcVolumeSliderClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
object_class->dispose = cc_volume_slider_dispose;
gtk_widget_class_set_template_from_resource (widget_class, "/org/gnome/control-center/sound/cc-volume-slider.ui");
gtk_widget_class_bind_template_child (widget_class, CcVolumeSlider, mute_button);
gtk_widget_class_bind_template_child (widget_class, CcVolumeSlider, stream_type_icon);
gtk_widget_class_bind_template_child (widget_class, CcVolumeSlider, volume_adjustment);
gtk_widget_class_bind_template_child (widget_class, CcVolumeSlider, volume_scale);
gtk_widget_class_bind_template_callback (widget_class, mute_button_toggled_cb);
gtk_widget_class_bind_template_callback (widget_class, volume_changed_cb);
}
void
cc_volume_slider_init (CcVolumeSlider *self)
{
g_resources_register (cc_sound_get_resource ());
gtk_widget_init_template (GTK_WIDGET (self));
}
void
cc_volume_slider_set_mixer_control (CcVolumeSlider *self,
GvcMixerControl *mixer_control)
{
g_return_if_fail (CC_IS_VOLUME_SLIDER (self));
g_set_object (&self->mixer_control, mixer_control);
update_ranges (self);
}
void
cc_volume_slider_set_stream (CcVolumeSlider *self,
GvcMixerStream *stream,
CcStreamType type)
{
g_return_if_fail (CC_IS_VOLUME_SLIDER (self));
if (self->stream != NULL)
{
g_signal_handler_disconnect (self->stream, self->notify_volume_handler_id);
self->notify_volume_handler_id = 0;
g_signal_handler_disconnect (self->stream, self->notify_is_muted_handler_id);
self->notify_is_muted_handler_id = 0;
}
g_clear_object (&self->stream);
switch (type)
{
case CC_STREAM_TYPE_INPUT:
gtk_image_set_from_icon_name (self->stream_type_icon,
"microphone-sensitivity-muted-symbolic",
GTK_ICON_SIZE_BUTTON);
break;
case CC_STREAM_TYPE_OUTPUT:
gtk_image_set_from_icon_name (self->stream_type_icon,
"audio-volume-muted-symbolic",
GTK_ICON_SIZE_BUTTON);
break;
default:
g_assert_not_reached ();
break;
}
if (stream != NULL)
{
self->stream = g_object_ref (stream);
self->notify_volume_handler_id = g_signal_connect_object (stream,
"notify::volume",
G_CALLBACK (notify_volume_cb),
self, G_CONNECT_SWAPPED);
self->notify_is_muted_handler_id = g_signal_connect_object (stream,
"notify::is-muted",
G_CALLBACK (notify_is_muted_cb),
self, G_CONNECT_SWAPPED);
notify_volume_cb (self);
notify_is_muted_cb (self);
update_volume_icon (self);
}
}
void
cc_volume_slider_set_is_amplified (CcVolumeSlider *self,
gboolean is_amplified)
{
g_return_if_fail (CC_IS_VOLUME_SLIDER (self));
self->is_amplified = is_amplified;
update_ranges (self);
}
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