1 files changed, 141 insertions, 0 deletions
diff --git a/kradio3/plugins/gui-standard-display/radioview_volume.cpp b/kradio3/plugins/gui-standard-display/radioview_volume.cpp
new file mode 100644
index 0000000..d642aa4
--- /dev/null
+++ b/kradio3/plugins/gui-standard-display/radioview_volume.cpp
@@ -0,0 +1,141 @@
+/***************************************************************************
+                          radioview_volume.cpp  -  description
+                             -------------------
+    begin                : Don Jun 19 2003
+    copyright            : (C) 2003 by Martin Witte
+    email                : [email protected]
+ ***************************************************************************/
+
+/***************************************************************************
+ *                                                                         *
+ *   This program 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.                                   *
+ *                                                                         *
+ ***************************************************************************/
+
+#include <math.h>
+#include <qslider.h>
+#include <qlayout.h>
+#include <qaccel.h>
+#include <qtooltip.h>
+
+#include <klocale.h>
+
+#include "radioview_volume.h"
+#include "../../src/include/plugins.h"
+
+#define SLIDER_MINVAL   0
+#define SLIDER_MAXVAL   32768
+#define SLIDER_RANGE    (SLIDER_MAXVAL - SLIDER_MINVAL)
+
+RadioViewVolume::RadioViewVolume(QWidget *parent, const QString &name)
+  : RadioViewElement (parent, name, clsRadioSound),
+    m_slider(NULL),
+    m_handlingSlot(false)
+{
+    float v = 0;
+    SoundStreamID ssid = queryCurrentSoundStreamID();
+    sendLogDebug (QString ("RadioViewVolume: ssid=%1").arg(ssid.getID()));
+    queryPlaybackVolume(ssid, v);
+    m_slider = new QSlider(SLIDER_MINVAL,
+                           SLIDER_MAXVAL,
+                           SLIDER_RANGE/10,
+                           getSlider4Volume(v),
+                           Qt::Vertical, this);
+
+    QObject::connect(m_slider, SIGNAL(valueChanged(int)),
+                     this,     SLOT(slotVolumeChanged(int)));
+
+    QBoxLayout *l = new QBoxLayout(this, QBoxLayout::LeftToRight);
+    l->addWidget(m_slider);
+
+    // Tooltips
+
+    QToolTip::add(m_slider, i18n("Change Volume"));
+
+    // Accelerators
+    QAccel *Accel = new QAccel (this);
+    Accel->insertItem (Key_Up,  100);
+    Accel->insertItem (Key_Down, 101);
+    Accel->connectItem (100, m_slider, SLOT(subtractStep()));
+    Accel->connectItem (101, m_slider, SLOT(addStep()));
+
+}
+
+
+RadioViewVolume::~RadioViewVolume()
+{
+}
+
+
+float RadioViewVolume::getUsability (Interface */*i*/) const
+{
+    return 0.5;  // there could be more features like mute control, capture settings, ...
+}
+
+
+bool RadioViewVolume::connectI   (Interface *i)
+{
+    bool a = IRadioDeviceClient::connectI(i);
+    bool b = ISoundStreamClient::connectI(i);
+    return a || b;
+}
+
+
+bool RadioViewVolume::disconnectI(Interface *i)
+{
+    bool a = IRadioDeviceClient::disconnectI(i);
+    bool b = ISoundStreamClient::disconnectI(i);
+    return a || b;
+}
+
+void RadioViewVolume::noticeConnectedI (ISoundStreamServer *s, bool pointer_valid)
+{
+    ISoundStreamClient::noticeConnectedI(s, pointer_valid);
+    if (s && pointer_valid) {
+        s->register4_notifyPlaybackVolumeChanged(this);
+    }
+}
+
+// ISoundStreamClient
+
+bool RadioViewVolume::noticePlaybackVolumeChanged(SoundStreamID id, float v)
+{
+    if (queryCurrentSoundStreamID() != id)
+        return false;
+    m_slider->setValue(getSlider4Volume(v));
+    return true;
+}
+
+
+
+void RadioViewVolume::slotVolumeChanged(int val)
+{
+    if (m_handlingSlot) return;
+    m_handlingSlot = true;
+    SoundStreamID ssid = queryCurrentSoundStreamID();
+    sendPlaybackVolume(ssid, getVolume4Slider(val));
+    m_handlingSlot = false;
+}
+
+
+int RadioViewVolume::getSlider4Volume(float volume)
+{
+    if (volume >= 1) volume = 1;
+    if (volume < 0) volume = 0;
+    return SLIDER_MAXVAL - (int)rint(SLIDER_RANGE * volume);
+}
+
+
+float RadioViewVolume::getVolume4Slider(int sl)
+{
+    if (sl > SLIDER_MAXVAL) sl = SLIDER_MAXVAL;
+    if (sl < SLIDER_MINVAL) sl = SLIDER_MINVAL;
+    return (float)(SLIDER_MAXVAL - sl) / (float)SLIDER_RANGE;
+}
+
+
+
+#include "radioview_volume.moc"