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/***
This file is part of pavucontrol.
Copyright 2006-2008 Lennart Poettering
Copyright 2009 Colin Guthrie
pavucontrol 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.
pavucontrol 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 pavucontrol. If not, see <http://www.gnu.org/licenses/>.
***/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "channelwidget.h"
#include "streamwidget.h"
#include "i18n.h"
static bool show_decibel = true;
/*** ChannelWidget ***/
ChannelWidget::ChannelWidget(BaseObjectType* cobject, const Glib::RefPtr<Gnome::Glade::Xml>& x) :
Gtk::EventBox(cobject),
volumeScaleEnabled(true) {
x->get_widget("channelLabel", channelLabel);
x->get_widget("volumeLabel", volumeLabel);
x->get_widget("volumeScale", volumeScale);
volumeScale->set_value(100.0);
volumeScale->set_increments(100.0/PA_VOLUME_NORM, 100.0/PA_VOLUME_NORM);
volumeScale->signal_value_changed().connect(sigc::mem_fun(*this, &ChannelWidget::onVolumeScaleValueChanged));
}
ChannelWidget* ChannelWidget::create() {
ChannelWidget* w;
Glib::RefPtr<Gnome::Glade::Xml> x = Gnome::Glade::Xml::create(GLADE_FILE, "channelWidget");
x->get_widget_derived("channelWidget", w);
return w;
}
void ChannelWidget::setVolume(pa_volume_t volume) {
double v;
char txt[64];
v = ((gdouble) volume * 100) / PA_VOLUME_NORM;
if (can_decibel && show_decibel) {
double dB = pa_sw_volume_to_dB(volume);
if (dB > PA_DECIBEL_MININFTY) {
snprintf(txt, sizeof(txt), "%0.2f dB", dB);
volumeLabel->set_tooltip_text(txt);
} else
volumeLabel->set_tooltip_markup("-∞dB");
volumeLabel->set_has_tooltip(TRUE);
} else
volumeLabel->set_has_tooltip(FALSE);
snprintf(txt, sizeof(txt), "%0.0f%%", v);
volumeLabel->set_text(txt);
volumeScaleEnabled = false;
volumeScale->set_value(v > 100 ? 100 : v);
volumeScaleEnabled = true;
}
void ChannelWidget::onVolumeScaleValueChanged() {
if (!volumeScaleEnabled)
return;
if (streamWidget->updating)
return;
pa_volume_t volume = (pa_volume_t) ((volumeScale->get_value() * PA_VOLUME_NORM) / 100);
streamWidget->updateChannelVolume(channel, volume);
if (beepDevice != "") {
ca_context_change_device(ca_gtk_context_get(), beepDevice.c_str());
ca_context_cancel(ca_gtk_context_get(), 2);
ca_gtk_play_for_widget(GTK_WIDGET(volumeScale->gobj()),
2,
CA_PROP_EVENT_DESCRIPTION, _("Volume Control Feedback Sound"),
CA_PROP_EVENT_ID, "audio-volume-change",
CA_PROP_CANBERRA_CACHE_CONTROL, "permanent",
CA_PROP_CANBERRA_VOLUME, "0",
CA_PROP_CANBERRA_ENABLE, "1",
NULL);
ca_context_change_device(ca_gtk_context_get(), NULL);
}
}
void ChannelWidget::set_sensitive(bool enabled) {
Gtk::EventBox::set_sensitive(enabled);
channelLabel->set_sensitive(enabled);
volumeLabel->set_sensitive(enabled);
volumeScale->set_sensitive(enabled);
}
void ChannelWidget::setBaseVolume(pa_volume_t v) {
gtk_scale_add_mark(GTK_SCALE(volumeScale->gobj()), 0.0, (GtkPositionType) GTK_POS_BOTTOM, _("<small>Silence</small>"));
gtk_scale_add_mark(GTK_SCALE(volumeScale->gobj()), 100.0, (GtkPositionType) GTK_POS_BOTTOM, _("<small>Max</small>"));
if (v > PA_VOLUME_MUTED && v < PA_VOLUME_NORM) {
double p = ((double) v * 100) / PA_VOLUME_NORM;
gtk_scale_add_mark(GTK_SCALE(volumeScale->gobj()), p, (GtkPositionType) GTK_POS_BOTTOM, _("<small><i>Base</i></small>"));
}
}
void ChannelWidget::setSteps(unsigned n) {
volumeScale->set_increments(100.0/(n-1), 100.0/(n-1));
}
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