1 files changed, 109 insertions, 0 deletions
diff --git a/src/channelwidget.cc b/src/channelwidget.cc
new file mode 100644
index 0000000..f30a01a
--- /dev/null
+++ b/src/channelwidget.cc
@@ -0,0 +1,109 @@
+/***
+  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/>.
+***/
+
+#include "channelwidget.h"
+#include "streamwidget.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);
+
+    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("-&#8734;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);
+}