452 lines
18 KiB
C++
Executable file
452 lines
18 KiB
C++
Executable file
/******************************************************************************\
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* Copyright (c) 2004-2009
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*
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* Author(s):
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* Volker Fischer
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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 it under
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* the terms of the GNU General Public License as published by the Free Software
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* Foundation; either version 2 of the License, or (at your option) any later
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* version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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* details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc.,
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* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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\******************************************************************************/
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#include "audiomixerboard.h"
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/******************************************************************************\
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* CChanneFader *
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\******************************************************************************/
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CChannelFader::CChannelFader ( QWidget* pNW,
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QHBoxLayout* pParentLayout )
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{
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// create new GUI control objects and store pointers to them
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pMainGrid = new QVBoxLayout();
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pFader = new QSlider ( Qt::Vertical, pNW );
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pcbMute = new QCheckBox ( "Mute", pNW );
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pcbSolo = new QCheckBox ( "Solo", pNW );
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pLabel = new QLabel ( "", pNW );
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// setup layout
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pMainGrid->setSpacing ( 2 );
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// setup slider
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pFader->setPageStep ( 1 );
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pFader->setTickPosition ( QSlider::TicksBothSides );
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pFader->setRange ( 0, AUD_MIX_FADER_MAX );
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pFader->setTickInterval ( AUD_MIX_FADER_MAX / 9 );
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// setup fader tag label (use white background of label)
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pLabel->setTextFormat ( Qt::PlainText );
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pLabel->setAlignment ( Qt::AlignHCenter );
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pLabel->setStyleSheet (
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"QLabel { border: 2px solid black;"
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" border-radius: 4px;"
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" padding: 4px;"
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" background-color: white;"
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" font: bold; }" );
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// add user controls to grid
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pMainGrid->addWidget( pFader, 0, Qt::AlignHCenter );
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pMainGrid->addWidget( pcbMute, 0, Qt::AlignLeft );
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pMainGrid->addWidget( pcbSolo, 0, Qt::AlignLeft );
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pMainGrid->addWidget( pLabel, 0, Qt::AlignHCenter );
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// add fader layout to audio mixer board layout
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pParentLayout->addLayout ( pMainGrid );
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// reset current fader
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Reset();
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// add help text to controls
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pFader->setWhatsThis ( "<b>Mixer Fader:</b> Adjusts the audio level of "
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"this channel. All connected clients at the server will be assigned "
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"an audio fader at each client." );
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pFader->setAccessibleName ( "Mixer level setting of the connected client "
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"at the server" );
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pcbMute->setWhatsThis ( "<b>Mute:</b> With the Mute checkbox, the current "
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"audio channel can be muted." );
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pcbMute->setAccessibleName ( "Mute button" );
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pcbSolo->setWhatsThis ( "<b>Solo:</b> With the Solo checkbox, the current "
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"audio channel can be set to solo which means that all other channels "
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"except of the current channel are muted.<br>"
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"Only one channel at a time can be set to solo." );
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pcbSolo->setAccessibleName ( "Solo button" );
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pLabel->setWhatsThis ( "<b>Mixer Fader Label:</b> Label (fader tag) "
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"identifying the connected client. The tag name can be set in the "
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"clients main window." );
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pLabel->setAccessibleName ( "Mixer level label (fader tag)" );
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// connections -------------------------------------------------------------
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QObject::connect ( pFader, SIGNAL ( valueChanged ( int ) ),
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this, SLOT ( OnGainValueChanged ( int ) ) );
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QObject::connect ( pcbMute, SIGNAL ( stateChanged ( int ) ),
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this, SLOT ( OnMuteStateChanged ( int ) ) );
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QObject::connect ( pcbSolo, SIGNAL ( stateChanged ( int ) ),
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this, SIGNAL ( soloStateChanged ( int ) ) );
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}
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void CChannelFader::SetGUIDesign ( const EGUIDesign eNewDesign )
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{
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switch ( eNewDesign )
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{
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case GD_ORIGINAL:
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// fader
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pFader->setStyleSheet (
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"QSlider { width: 30px;"
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" border-image: url(:/png/fader/res/faderbackground.png) 10px 0px 10px 0px repeat;"
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" border-top: 10px transparent;"
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" border-bottom: 10px transparent;"
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" border-left: 0px transparent;"
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" border-right: 0px transparent; }"
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"QSlider::groove { image: url();"
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" padding-top: -10px;"
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" padding-bottom: -15px; }"
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"QSlider::handle { image: url(:/png/fader/res/faderhandle.png); }" );
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// mute button
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pcbMute->setStyleSheet (
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"QCheckBox::indicator { width: 43px;"
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" height: 24px; }"
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"QCheckBox::indicator:unchecked {"
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" image: url(:/png/fader/res/ledbuttonnotpressed.png); }"
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"QCheckBox::indicator:checked {"
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" image: url(:/png/fader/res/ledbuttonpressed.png); }"
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"QCheckBox { color: rgb(148, 148, 148);"
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" font: bold; }" );
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pcbMute->setText ( "MUTE" );
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// solo button
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pcbSolo->setStyleSheet (
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"QCheckBox::indicator { width: 43px;"
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" height: 24px; }"
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"QCheckBox::indicator:unchecked {"
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" image: url(:/png/fader/res/ledbuttonnotpressed.png); }"
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"QCheckBox::indicator:checked {"
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" image: url(:/png/fader/res/ledbuttonpressed.png); }"
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"QCheckBox { color: rgb(148, 148, 148);"
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" font: bold; }" );
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pcbSolo->setText ( "SOLO" );
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break;
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default:
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// reset style sheet and set original paramters
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pFader->setStyleSheet ( "" );
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pcbMute->setStyleSheet ( "" );
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pcbSolo->setStyleSheet ( "" );
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pcbMute->setText ( "Mute" );
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pcbSolo->setText ( "Solo" );
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break;
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}
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}
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void CChannelFader::Reset()
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{
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// init gain value -> maximum value as definition according to server
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pFader->setValue ( AUD_MIX_FADER_MAX );
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// reset mute/solo check boxes
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pcbMute->setChecked ( false );
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pcbSolo->setChecked ( false );
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// clear label
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pLabel->setText ( "" );
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bOtherChannelIsSolo = false;
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}
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void CChannelFader::OnGainValueChanged ( int value )
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{
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// if mute flag is set, do not apply the new fader value
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if ( pcbMute->checkState() == Qt::Unchecked )
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{
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// emit signal for new fader gain value
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emit gainValueChanged ( CalcFaderGain ( value ) );
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}
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}
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void CChannelFader::OnMuteStateChanged ( int value )
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{
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// call muting function
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SetMute ( static_cast<Qt::CheckState> ( value ) == Qt::Checked );
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}
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void CChannelFader::SetMute ( const bool bState )
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{
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if ( bState )
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{
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// mute channel -> send gain of 0
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emit gainValueChanged ( 0 );
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}
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else
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{
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// only unmute if no other channel is on solo
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if ( !bOtherChannelIsSolo )
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{
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// mute was unchecked, get current fader value and apply
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emit gainValueChanged ( CalcFaderGain ( pFader->value() ) );
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}
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}
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}
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void CChannelFader::ResetSoloState()
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{
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// reset solo state -> since solo state means that this channel is not
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// muted but all others, we simply have to uncheck the check box
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pcbSolo->setChecked ( false );
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}
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void CChannelFader::SetOtherSoloState ( const bool bState )
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{
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// store state (must be done before the SetMute() call!)
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bOtherChannelIsSolo = bState;
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// check if we are in solo on state, in that case we first have to disable
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// our solo state since only one channel can be set to solo
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if ( bState && pcbSolo->isChecked() )
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{
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pcbSolo->setChecked ( false );
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}
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// if other channel is solo, mute this channel, else enable channel gain
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// (only enable channel gain if local mute switch is not set to on)
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if ( !pcbMute->isChecked() )
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{
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SetMute ( bState );
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}
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}
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void CChannelFader::SetText ( const QString sText )
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{
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const int iBreakPos = MAX_LEN_FADER_TAG / 2;
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// break text at predefined position, if text is too short, break anyway to
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// make sure we have two lines for fader tag
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QString sModText = sText;
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if ( sModText.length() > iBreakPos )
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{
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sModText.insert ( iBreakPos, QString ( "\n" ) );
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}
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else
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{
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// insert line break at the beginning of the string -> make sure
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// if we only have one line that the text appears at the bottom line
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sModText.prepend ( QString ( "\n" ) );
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}
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pLabel->setText ( sModText );
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}
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double CChannelFader::CalcFaderGain ( const int value )
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{
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// convert actual slider range in gain values
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// and normalize so that maximum gain is 1
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return static_cast<double> ( value ) / AUD_MIX_FADER_MAX;
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}
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/******************************************************************************\
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* CAudioMixerBoard *
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\******************************************************************************/
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CAudioMixerBoard::CAudioMixerBoard ( QWidget* parent, Qt::WindowFlags f ) :
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QGroupBox ( parent )
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{
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// set title text and title properties
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setTitle ( "Server" );
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// add hboxlayout
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pMainLayout = new QHBoxLayout ( this );
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// create all mixer controls and make them invisible
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vecpChanFader.Init ( MAX_NUM_CHANNELS );
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for ( int i = 0; i < MAX_NUM_CHANNELS; i++ )
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{
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vecpChanFader[i] = new CChannelFader ( this, pMainLayout );
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vecpChanFader[i]->Hide();
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}
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// insert horizontal spacer
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pMainLayout->addItem ( new QSpacerItem ( 0, 0, QSizePolicy::Expanding ) );
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// connections -------------------------------------------------------------
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// CODE TAG: MAX_NUM_CHANNELS_TAG
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// make sure we have MAX_NUM_CHANNELS connections!!!
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QObject::connect ( vecpChanFader[0], SIGNAL ( gainValueChanged ( double ) ), this, SLOT ( OnGainValueChangedCh0 ( double ) ) );
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QObject::connect ( vecpChanFader[1], SIGNAL ( gainValueChanged ( double ) ), this, SLOT ( OnGainValueChangedCh1 ( double ) ) );
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QObject::connect ( vecpChanFader[2], SIGNAL ( gainValueChanged ( double ) ), this, SLOT ( OnGainValueChangedCh2 ( double ) ) );
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QObject::connect ( vecpChanFader[3], SIGNAL ( gainValueChanged ( double ) ), this, SLOT ( OnGainValueChangedCh3 ( double ) ) );
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QObject::connect ( vecpChanFader[4], SIGNAL ( gainValueChanged ( double ) ), this, SLOT ( OnGainValueChangedCh4 ( double ) ) );
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QObject::connect ( vecpChanFader[5], SIGNAL ( gainValueChanged ( double ) ), this, SLOT ( OnGainValueChangedCh5 ( double ) ) );
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QObject::connect ( vecpChanFader[6], SIGNAL ( gainValueChanged ( double ) ), this, SLOT ( OnGainValueChangedCh6 ( double ) ) );
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QObject::connect ( vecpChanFader[7], SIGNAL ( gainValueChanged ( double ) ), this, SLOT ( OnGainValueChangedCh7 ( double ) ) );
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QObject::connect ( vecpChanFader[8], SIGNAL ( gainValueChanged ( double ) ), this, SLOT ( OnGainValueChangedCh8 ( double ) ) );
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QObject::connect ( vecpChanFader[9], SIGNAL ( gainValueChanged ( double ) ), this, SLOT ( OnGainValueChangedCh9 ( double ) ) );
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QObject::connect ( vecpChanFader[0], SIGNAL ( soloStateChanged ( int ) ), this, SLOT ( OnChSoloStateChangedCh0 ( int ) ) );
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QObject::connect ( vecpChanFader[1], SIGNAL ( soloStateChanged ( int ) ), this, SLOT ( OnChSoloStateChangedCh1 ( int ) ) );
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QObject::connect ( vecpChanFader[2], SIGNAL ( soloStateChanged ( int ) ), this, SLOT ( OnChSoloStateChangedCh2 ( int ) ) );
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QObject::connect ( vecpChanFader[3], SIGNAL ( soloStateChanged ( int ) ), this, SLOT ( OnChSoloStateChangedCh3 ( int ) ) );
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QObject::connect ( vecpChanFader[4], SIGNAL ( soloStateChanged ( int ) ), this, SLOT ( OnChSoloStateChangedCh4 ( int ) ) );
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QObject::connect ( vecpChanFader[5], SIGNAL ( soloStateChanged ( int ) ), this, SLOT ( OnChSoloStateChangedCh5 ( int ) ) );
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QObject::connect ( vecpChanFader[6], SIGNAL ( soloStateChanged ( int ) ), this, SLOT ( OnChSoloStateChangedCh6 ( int ) ) );
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QObject::connect ( vecpChanFader[7], SIGNAL ( soloStateChanged ( int ) ), this, SLOT ( OnChSoloStateChangedCh7 ( int ) ) );
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QObject::connect ( vecpChanFader[8], SIGNAL ( soloStateChanged ( int ) ), this, SLOT ( OnChSoloStateChangedCh8 ( int ) ) );
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QObject::connect ( vecpChanFader[9], SIGNAL ( soloStateChanged ( int ) ), this, SLOT ( OnChSoloStateChangedCh9 ( int ) ) );
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}
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void CAudioMixerBoard::SetGUIDesign ( const EGUIDesign eNewDesign )
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{
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// apply GUI design to current window
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switch ( eNewDesign )
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{
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case GD_ORIGINAL:
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// group box
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setStyleSheet (
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"QGroupBox { border-image: url(:/png/fader/res/mixerboardbackground.png) 34px 30px 40px 40px;"
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" border-top: 34px transparent;"
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" border-bottom: 40px transparent;"
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" border-left: 30px transparent;"
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" border-right: 40px transparent;"
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" padding: -5px;"
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" margin: -5px, -5px, 0px, 0px; }"
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"QGroupBox::title { margin-top: 13px;"
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" margin-left: 35px;"
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" background-color: transparent;"
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" color: rgb(148, 148, 148); }" );
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layout()->setMargin ( 3 );
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break;
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default:
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// reset style sheet and set original paramters
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setStyleSheet ( "" );
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layout()->setMargin ( 9 );
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break;
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}
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// also apply GUI design to child GUI controls
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for ( int i = 0; i < USED_NUM_CHANNELS; i++ )
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{
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vecpChanFader[i]->SetGUIDesign ( eNewDesign );
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}
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}
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void CAudioMixerBoard::HideAll()
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{
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// make all controls invisible
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for ( int i = 0; i < USED_NUM_CHANNELS; i++ )
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{
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vecpChanFader[i]->Hide();
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}
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// emit status of connected clients
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emit NumClientsChanged ( 0 ); // -> no clients connected
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}
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void CAudioMixerBoard::ApplyNewConClientList ( CVector<CChannelShortInfo>& vecChanInfo )
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{
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// get number of connected clients
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const int iNumConnectedClients = vecChanInfo.Size();
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// search for channels with are already present and preserver their gain
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// setting, for all other channels, reset gain
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for ( int i = 0; i < USED_NUM_CHANNELS; i++ )
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{
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bool bFaderIsUsed = false;
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for ( int j = 0; j < iNumConnectedClients; j++ )
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{
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// check if current fader is used
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if ( vecChanInfo[j].iChanID == i )
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{
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// check if fader was already in use -> preserve gain value
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if ( !vecpChanFader[i]->IsVisible() )
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{
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vecpChanFader[i]->Reset();
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// show fader
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vecpChanFader[i]->Show();
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}
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else
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{
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// by definition disable all Solo switches if the number of
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// channels at the server has changed
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vecpChanFader[i]->SetOtherSoloState ( false );
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vecpChanFader[i]->ResetSoloState();
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}
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// update text
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vecpChanFader[i]->SetText ( GenFaderText ( vecChanInfo[j] ) );
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bFaderIsUsed = true;
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}
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}
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// if current fader is not used, hide it
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if ( !bFaderIsUsed )
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{
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vecpChanFader[i]->Hide();
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}
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}
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// emit status of connected clients
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emit NumClientsChanged ( iNumConnectedClients );
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}
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void CAudioMixerBoard::OnChSoloStateChanged ( const int iChannelIdx, const int iValue )
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{
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// if channel iChannelIdx has just activated the solo switch, mute all
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// other channels, else enable them again
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const bool bSetOtherSoloState =
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( static_cast<Qt::CheckState> ( iValue ) == Qt::Checked );
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// apply "other solo state" for all other channels
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for ( int i = 0; i < USED_NUM_CHANNELS; i++ )
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{
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if ( i != iChannelIdx )
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{
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// check if fader is in use
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if ( vecpChanFader[i]->IsVisible() )
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{
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vecpChanFader[i]->SetOtherSoloState ( bSetOtherSoloState );
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}
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}
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}
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}
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QString CAudioMixerBoard::GenFaderText ( CChannelShortInfo& ChanInfo )
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{
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// if text is empty, show IP address instead
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if ( ChanInfo.strName.isEmpty() )
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{
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// convert IP address to text and show it (use dummy port number
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// since it is not used here)
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const CHostAddress TempAddr =
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CHostAddress ( QHostAddress ( ChanInfo.iIpAddr ), 0 );
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return TempAddr.GetIpAddressStringNoLastByte();
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}
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else
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{
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// show name of channel
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return ChanInfo.strName;
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}
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}
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