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142 lines
4.1 KiB
142 lines
4.1 KiB
/***************************************************************************
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radioview_volume.cpp - description
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-------------------
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begin : Don Jun 19 2003
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copyright : (C) 2003 by Martin Witte
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email : witte@kawo1.rwth-aachen.de
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***************************************************************************/
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/***************************************************************************
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* *
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* This program 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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* *
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***************************************************************************/
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#include <math.h>
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#include <qslider.h>
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#include <qlayout.h>
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#include <qaccel.h>
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#include <qtooltip.h>
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#include <klocale.h>
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#include "radioview_volume.h"
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#include "../../src/include/plugins.h"
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#define SLIDER_MINVAL 0
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#define SLIDER_MAXVAL 32768
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#define SLIDER_RANGE (SLIDER_MAXVAL - SLIDER_MINVAL)
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RadioViewVolume::RadioViewVolume(QWidget *parent, const QString &name)
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: RadioViewElement (parent, name, clsRadioSound),
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m_slider(NULL),
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m_handlingSlot(false)
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{
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float v = 0;
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SoundStreamID ssid = queryCurrentSoundStreamID();
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sendLogDebug (QString ("RadioViewVolume: ssid=%1").arg(ssid.getID()));
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queryPlaybackVolume(ssid, v);
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m_slider = new QSlider(SLIDER_MINVAL,
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SLIDER_MAXVAL,
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SLIDER_RANGE/10,
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getSlider4Volume(v),
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Qt::Vertical, this);
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QObject::connect(m_slider, SIGNAL(valueChanged(int)),
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this, SLOT(slotVolumeChanged(int)));
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QBoxLayout *l = new QBoxLayout(this, QBoxLayout::LeftToRight);
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l->addWidget(m_slider);
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// Tooltips
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QToolTip::add(m_slider, i18n("Change Volume"));
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// Accelerators
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QAccel *Accel = new QAccel (this);
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Accel->insertItem (Key_Up, 100);
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Accel->insertItem (Key_Down, 101);
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Accel->connectItem (100, m_slider, SLOT(subtractStep()));
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Accel->connectItem (101, m_slider, SLOT(addStep()));
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}
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RadioViewVolume::~RadioViewVolume()
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{
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}
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float RadioViewVolume::getUsability (Interface */*i*/) const
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{
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return 0.5; // there could be more features like mute control, capture settings, ...
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}
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bool RadioViewVolume::connectI (Interface *i)
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{
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bool a = IRadioDeviceClient::connectI(i);
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bool b = ISoundStreamClient::connectI(i);
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return a || b;
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}
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bool RadioViewVolume::disconnectI(Interface *i)
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{
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bool a = IRadioDeviceClient::disconnectI(i);
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bool b = ISoundStreamClient::disconnectI(i);
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return a || b;
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}
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void RadioViewVolume::noticeConnectedI (ISoundStreamServer *s, bool pointer_valid)
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{
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ISoundStreamClient::noticeConnectedI(s, pointer_valid);
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if (s && pointer_valid) {
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s->register4_notifyPlaybackVolumeChanged(this);
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}
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}
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// ISoundStreamClient
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bool RadioViewVolume::noticePlaybackVolumeChanged(SoundStreamID id, float v)
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{
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if (queryCurrentSoundStreamID() != id)
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return false;
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m_slider->setValue(getSlider4Volume(v));
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return true;
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}
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void RadioViewVolume::slotVolumeChanged(int val)
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{
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if (m_handlingSlot) return;
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m_handlingSlot = true;
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SoundStreamID ssid = queryCurrentSoundStreamID();
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sendPlaybackVolume(ssid, getVolume4Slider(val));
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m_handlingSlot = false;
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}
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int RadioViewVolume::getSlider4Volume(float volume)
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{
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if (volume >= 1) volume = 1;
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if (volume < 0) volume = 0;
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return SLIDER_MAXVAL - (int)rint(SLIDER_RANGE * volume);
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}
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float RadioViewVolume::getVolume4Slider(int sl)
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{
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if (sl > SLIDER_MAXVAL) sl = SLIDER_MAXVAL;
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if (sl < SLIDER_MINVAL) sl = SLIDER_MINVAL;
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return (float)(SLIDER_MAXVAL - sl) / (float)SLIDER_RANGE;
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}
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#include "radioview_volume.moc"
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