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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 "minimalstreamwidget.h"
#include "i18n.h"
/*** ChannelWidget ***/
ChannelWidget::ChannelWidget(BaseObjectType* cobject, const Glib::RefPtr<Gtk::Builder>& x) :
Gtk::Widget(cobject),
can_decibel(false),
volumeScaleEnabled(true),
last(false) {
channelLabel = x->get_widget<Gtk::Label>("channelLabel");
volumeLabel = x->get_widget<Gtk::Label>("volumeLabel");
volumeScale = x->get_widget<Gtk::Scale>("volumeScale");
volumeScale->set_range((double)PA_VOLUME_MUTED, (double)PA_VOLUME_UI_MAX);
volumeScale->set_value((double)PA_VOLUME_NORM);
volumeScale->set_increments(((double)PA_VOLUME_NORM)/100.0, ((double)PA_VOLUME_NORM)/20.0);
setBaseVolume(PA_VOLUME_NORM);
volumeScale->signal_value_changed().connect(sigc::mem_fun(*this, &ChannelWidget::onVolumeScaleValueChanged));
}
ChannelWidget* ChannelWidget::createOne(MinimalStreamWidget *owner, int channelIndex, pa_channel_position channelPosition, bool can_decibel) {
ChannelWidget* w;
Glib::RefPtr<Gtk::Builder> x = Gtk::Builder::create();
x->add_from_file(GLADE_FILE, "adjustment1");
x->add_from_file(GLADE_FILE, "channelWidget");
w = Gtk::Builder::get_widget_derived<ChannelWidget>(x, "channelWidget");
w->reference();
w->channel = channelIndex;
w->can_decibel = can_decibel;
w->minimalStreamWidget = owner;
char text[64];
snprintf(text, sizeof(text), "<b>%s</b>", pa_channel_position_to_pretty_string(channelPosition));
w->channelLabel->set_markup(text);
return w;
}
void ChannelWidget::create(MinimalStreamWidget *owner, const pa_channel_map &m, bool can_decibel, ChannelWidget *widgets[PA_CHANNELS_MAX]) {
int maxLabelWidth = 0;
for (int i = 0; i < m.channels; i++) {
widgets[i] = ChannelWidget::createOne(owner, i, m.map[i], can_decibel);
Gtk::Requisition minimumSize;
Gtk::Requisition naturalSize;
widgets[i]->channelLabel->get_preferred_size(minimumSize, naturalSize);
if (naturalSize.get_width() > maxLabelWidth)
maxLabelWidth = naturalSize.get_width();
}
widgets[m.channels - 1]->last = true;
/* The channel labels have different widths by default, which makes the
* volume slider widths different too. The volume sliders must have the
* same width, otherwise it's very hard to see how the volumes of different
* channels relate to each other, so we have to change all channel labels
* to have the same width. */
for (int i = 0; i < m.channels; i++)
widgets[i]->channelLabel->set_size_request(maxLabelWidth, -1);
}
void ChannelWidget::setVolume(pa_volume_t volume) {
double v;
char txt[64];
v = ((gdouble) volume * 100) / PA_VOLUME_NORM;
if (can_decibel) {
double dB = pa_sw_volume_to_dB(volume);
if (dB > PA_DECIBEL_MININFTY)
snprintf(txt, sizeof(txt), _("<small>%0.0f%% (%0.2f dB)</small>"), v, dB);
else
snprintf(txt, sizeof(txt), _("<small>%0.0f%% (-∞ dB)</small>"), v);
}
else
snprintf(txt, sizeof(txt), _("%0.0f%%"), v);
volumeLabel->set_markup(txt);
volumeScaleEnabled = false;
volumeScale->set_value(volume > PA_VOLUME_UI_MAX ? PA_VOLUME_UI_MAX : volume);
currentVolume = volumeScale->get_value();
volumeScaleEnabled = true;
}
void ChannelWidget::onVolumeScaleValueChanged() {
if (!volumeScaleEnabled)
return;
if (minimalStreamWidget->updating)
return;
pa_volume_t volume = (pa_volume_t) volumeScale->get_value();
if (volume != currentVolume)
minimalStreamWidget->updateChannelVolume(channel, volume);
}
void ChannelWidget::set_sensitive(bool enabled) {
Gtk::Widget::set_sensitive(enabled);
channelLabel->set_sensitive(enabled);
volumeLabel->set_sensitive(enabled);
volumeScale->set_sensitive(enabled);
}
void ChannelWidget::setBaseVolume(pa_volume_t v) {
gtk_scale_clear_marks(GTK_SCALE(volumeScale->gobj()));
gtk_scale_add_mark(GTK_SCALE(volumeScale->gobj()), (double)PA_VOLUME_MUTED, (GtkPositionType) GTK_POS_BOTTOM,
last ? (can_decibel ? _("<small>Silence</small>") : _("<small>Min</small>")) : NULL);
gtk_scale_add_mark(GTK_SCALE(volumeScale->gobj()), (double)PA_VOLUME_NORM, (GtkPositionType) GTK_POS_BOTTOM,
last ? _("<small>100% (0 dB)</small>") : NULL);
if (v > PA_VOLUME_MUTED && v < PA_VOLUME_NORM) {
gtk_scale_add_mark(GTK_SCALE(volumeScale->gobj()), (double)v, (GtkPositionType) GTK_POS_BOTTOM,
last ? _("<small><i>Base</i></small>") : NULL);
}
}
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