104 lines
2.7 KiB
C++
104 lines
2.7 KiB
C++
/***
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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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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include "minimalstreamwidget.h"
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/*** MinimalStreamWidget ***/
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MinimalStreamWidget::MinimalStreamWidget(BaseObjectType* cobject) :
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Gtk::Box(cobject),
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channelsVBox(NULL),
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nameLabel(NULL),
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boldNameLabel(NULL),
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iconImage(NULL),
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peakProgressBar(),
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lastPeak(0),
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peak(NULL),
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updating(false),
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volumeMeterEnabled(false),
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volumeMeterVisible(true) {
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}
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MinimalStreamWidget::~MinimalStreamWidget() {
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if (peak) {
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pa_stream_disconnect(peak);
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pa_stream_unref(peak);
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peak = NULL;
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}
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}
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void MinimalStreamWidget::init() {
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/* Set up the peak meter. This is not done in the constructor, because
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* channelsVBox is initialized by the subclasses, so it's not yet available
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* in the constructor. */
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peakProgressBar.set_size_request(-1, 10);
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channelsVBox->append(peakProgressBar);
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/* XXX: Why is the peak meter hidden by default? Maybe the idea is that if
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* setting up the monitoring stream fails for whatever reason, then we
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* shouldn't show the peak meter at all. */
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peakProgressBar.hide();
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}
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#define DECAY_STEP (1.0 / PEAKS_RATE)
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void MinimalStreamWidget::updatePeak(double v) {
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if (lastPeak >= DECAY_STEP)
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if (v < lastPeak - DECAY_STEP)
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v = lastPeak - DECAY_STEP;
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lastPeak = v;
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if (v >= 0) {
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peakProgressBar.set_sensitive(TRUE);
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peakProgressBar.set_fraction(v);
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} else {
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peakProgressBar.set_sensitive(FALSE);
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peakProgressBar.set_fraction(0);
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}
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enableVolumeMeter();
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}
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void MinimalStreamWidget::enableVolumeMeter() {
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if (volumeMeterEnabled)
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return;
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volumeMeterEnabled = true;
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if (volumeMeterVisible) {
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peakProgressBar.show();
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}
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}
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void MinimalStreamWidget::setVolumeMeterVisible(bool v) {
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volumeMeterVisible = v;
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if (v) {
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if (volumeMeterEnabled) {
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peakProgressBar.show();
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}
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} else {
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peakProgressBar.hide();
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}
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}
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