110 lines
3.4 KiB
C++
110 lines
3.4 KiB
C++
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/***
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This file is part of pavucontrol.
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Copyright 2006-2008 Lennart Poettering
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Copyright 2009 Colin Guthrie
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pavucontrol is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 2 of the License, or
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(at your option) any later version.
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pavucontrol is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with pavucontrol. If not, see <http://www.gnu.org/licenses/>.
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***/
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#include "channelwidget.h"
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#include "streamwidget.h"
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static bool show_decibel = true;
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/*** ChannelWidget ***/
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ChannelWidget::ChannelWidget(BaseObjectType* cobject, const Glib::RefPtr<Gnome::Glade::Xml>& x) :
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Gtk::EventBox(cobject),
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volumeScaleEnabled(true) {
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x->get_widget("channelLabel", channelLabel);
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x->get_widget("volumeLabel", volumeLabel);
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x->get_widget("volumeScale", volumeScale);
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volumeScale->set_value(100);
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volumeScale->signal_value_changed().connect(sigc::mem_fun(*this, &ChannelWidget::onVolumeScaleValueChanged));
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}
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ChannelWidget* ChannelWidget::create() {
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ChannelWidget* w;
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Glib::RefPtr<Gnome::Glade::Xml> x = Gnome::Glade::Xml::create(GLADE_FILE, "channelWidget");
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x->get_widget_derived("channelWidget", w);
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return w;
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}
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void ChannelWidget::setVolume(pa_volume_t volume) {
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double v;
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char txt[64];
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v = ((gdouble) volume * 100) / PA_VOLUME_NORM;
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if (can_decibel && show_decibel) {
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double dB = pa_sw_volume_to_dB(volume);
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if (dB > PA_DECIBEL_MININFTY) {
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snprintf(txt, sizeof(txt), "%0.2f dB", dB);
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volumeLabel->set_tooltip_text(txt);
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} else
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volumeLabel->set_tooltip_markup("-∞dB");
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volumeLabel->set_has_tooltip(TRUE);
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} else
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volumeLabel->set_has_tooltip(FALSE);
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snprintf(txt, sizeof(txt), "%0.0f%%", v);
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volumeLabel->set_text(txt);
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volumeScaleEnabled = false;
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volumeScale->set_value(v > 100 ? 100 : v);
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volumeScaleEnabled = true;
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}
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void ChannelWidget::onVolumeScaleValueChanged() {
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if (!volumeScaleEnabled)
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return;
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if (streamWidget->updating)
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return;
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pa_volume_t volume = (pa_volume_t) ((volumeScale->get_value() * PA_VOLUME_NORM) / 100);
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streamWidget->updateChannelVolume(channel, volume);
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if (beepDevice != "") {
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ca_context_change_device(ca_gtk_context_get(), beepDevice.c_str());
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ca_context_cancel(ca_gtk_context_get(), 2);
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ca_gtk_play_for_widget(GTK_WIDGET(volumeScale->gobj()),
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2,
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CA_PROP_EVENT_DESCRIPTION, _("Volume Control Feedback Sound"),
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CA_PROP_EVENT_ID, "audio-volume-change",
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CA_PROP_CANBERRA_CACHE_CONTROL, "permanent",
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CA_PROP_CANBERRA_VOLUME, "0",
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CA_PROP_CANBERRA_ENABLE, "1",
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NULL);
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ca_context_change_device(ca_gtk_context_get(), NULL);
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}
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}
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void ChannelWidget::set_sensitive(bool enabled) {
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Gtk::EventBox::set_sensitive(enabled);
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channelLabel->set_sensitive(enabled);
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volumeLabel->set_sensitive(enabled);
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volumeScale->set_sensitive(enabled);
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}
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