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Individual knob labels rendered using the widget font #7525

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Individual knob labels rendered using the widget font #7525

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6863e01
Knob with correct label rendering
michaelgregorius Sep 28, 2024
845b51f
Switch from `setLabel` to `setLabelLegacy`
michaelgregorius Sep 28, 2024
bbca164
Remove parameter `legacyMode` from `setLabel`
michaelgregorius Sep 28, 2024
21ba9f3
Extract methods
michaelgregorius Sep 28, 2024
01a46d0
Introduce legacy knob builders
michaelgregorius Sep 28, 2024
f72290a
Legacy knob builders in GUI
michaelgregorius Sep 28, 2024
eb6d27f
Remove `Knob::setLabelLegacy`
michaelgregorius Sep 28, 2024
ee2ccb6
Use descent to calculate base line
michaelgregorius Sep 28, 2024
e065d24
Extract `Knob::drawLabel`
michaelgregorius Sep 28, 2024
86a5ca0
Use non-legacy knobs for instrument and sample track
michaelgregorius Sep 28, 2024
b891120
Introduce `buildKnobWithSmallPixelFont`
michaelgregorius Sep 29, 2024
cd43423
Non-legacy knobs for VSTs
michaelgregorius Sep 29, 2024
d31c90e
Fix styled knobs
michaelgregorius Sep 29, 2024
39e1e9f
Code review changes
michaelgregorius Sep 30, 2024
3991612
Code review changes
michaelgregorius Oct 10, 2024
e66d841
Add documentation for legacy mode
michaelgregorius Oct 10, 2024
c4077e9
Code review
michaelgregorius Oct 10, 2024
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2 changes: 2 additions & 0 deletions include/CustomTextKnob.h
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Expand Up @@ -42,6 +42,8 @@ class LMMS_EXPORT CustomTextKnob : public Knob

CustomTextKnob( const Knob& other ) = delete;

static CustomTextKnob* buildKnobWithSmallPixelFont(KnobType knob_num, QWidget* parent, const QString& description, const QString& label);
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You don't need to mention "Knob" in the function name. createWithSmallFont might be better.

Or just make this a constructor.


inline void setValueText(const QString & _value_text)
{
m_value_text = _value_text;
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12 changes: 11 additions & 1 deletion include/Knob.h
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Expand Up @@ -81,9 +81,15 @@ class LMMS_EXPORT Knob : public FloatModelEditorBase
Knob( QWidget * _parent = nullptr, const QString & _name = QString() ); //!< default ctor
Knob( const Knob& other ) = delete;

void setLabel( const QString & txt );
static Knob* buildLegacyKnob(KnobType knob_num, const QString& label, QWidget* parent, const QString & _name = QString());
static Knob* buildKnobWithSmallPixelFont(KnobType knob_num, const QString& label, QWidget* parent, const QString & _name = QString());

void setLabel(const QString & txt);
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void setHtmlLabel( const QString &htmltxt );

bool legacyMode() const { return m_legacyMode; }
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void setLegacyMode(bool legacyMode);

void setTotalAngle( float angle );

// Begin styled knob accessors
Expand Down Expand Up @@ -122,14 +128,18 @@ class LMMS_EXPORT Knob : public FloatModelEditorBase
float _innerRadius = 1) const;

void drawKnob( QPainter * _p );
void drawLabel(QPainter& p);
bool updateAngle();

int angleFromValue( float value, float minValue, float maxValue, float totalAngle ) const
{
return static_cast<int>( ( value - 0.5 * ( minValue + maxValue ) ) / ( maxValue - minValue ) * m_totalAngle ) % 360;
}

void updateFixedSize();

QString m_label;
bool m_legacyMode = false;
bool m_isHtmlLabel;
QTextDocument* m_tdRenderer;

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3 changes: 3 additions & 0 deletions include/TempoSyncKnob.h
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Expand Up @@ -44,6 +44,9 @@ class LMMS_EXPORT TempoSyncKnob : public Knob
TempoSyncKnob( KnobType knobNum, QWidget* parent = nullptr, const QString& name = QString() );
~TempoSyncKnob() override;

static TempoSyncKnob* buildLegacyKnob(KnobType knob_num, const QString& label, QWidget* parent);
static TempoSyncKnob* buildKnobWithSmallPixelFont(KnobType knob_num, const QString& label, QWidget* parent);
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I feel like these could also be given more concise names or be made constructors.

And it would be good to cut down on duplicate code by not having these build functions in all 3 knob classes.

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Turning it into a constructor would lead to lots of verbose code in several areas. With this PR the Knob is intended to render the label using the font that's currently set for it. Without any intervention this normally would be the font that's used by its parent (as is also the case for Qt widgets).

Let's see what Knob::buildKnobWithSmallPixelFont does:

auto result = new Knob(knobNum, parent, name);
result->setFont(adjustedToPixelSize(result->font(), SMALL_FONT_SIZE));
result->setLabel(label);

return result;

One of the things that it does is to set the font to the small font size by using adjustedToPixelSize. This would have to be repeated in all places where clients currently use buildKnobWithSmallPixelFont. The label would also need to be set explicitly because the Knob constructor does not support taking the label. Therefore I propose to keep the builder/factory methods for now.

What do you think about moving the build methods that are currently provided by Knob, CustomTextKnob and TempoSyncKnob into a factory class?


const QString & syncDescription();
void setSyncDescription( const QString & _new_description );

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21 changes: 12 additions & 9 deletions plugins/Amplifier/AmplifierControlDialog.cpp
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Expand Up @@ -28,6 +28,9 @@
#include "embed.h"
#include "Knob.h"

#include <QGridLayout>


namespace lmms::gui
{

Expand All @@ -38,23 +41,23 @@ AmplifierControlDialog::AmplifierControlDialog(AmplifierControls* controls) :
QPalette pal;
pal.setBrush(backgroundRole(), PLUGIN_NAME::getIconPixmap("artwork"));
setPalette(pal);
setFixedSize(100, 110);

QGridLayout* gridLayout = new QGridLayout(this);

auto makeKnob = [this](int x, int y, const QString& label, const QString& hintText, const QString& unit, FloatModel* model, bool isVolume)
auto makeKnob = [this](const QString& label, const QString& hintText, const QString& unit, FloatModel* model, bool isVolume)
{
Knob* newKnob = new Knob(KnobType::Bright26, this);
newKnob->move(x, y);
Knob* newKnob = new Knob(KnobType::Bright26, this);
newKnob->setModel(model);
newKnob->setLabel(label);
newKnob->setLabel(label);
newKnob->setHintText(hintText, unit);
newKnob->setVolumeKnob(isVolume);
return newKnob;
};

makeKnob(16, 10, tr("VOL"), tr("Volume:"), "%", &controls->m_volumeModel, true);
makeKnob(57, 10, tr("PAN"), tr("Panning:"), "%", &controls->m_panModel, false);
makeKnob(16, 65, tr("LEFT"), tr("Left gain:"), "%", &controls->m_leftModel, true);
makeKnob(57, 65, tr("RIGHT"), tr("Right gain:"), "%", &controls->m_rightModel, true);
gridLayout->addWidget(makeKnob(tr("VOL"), tr("Volume:"), "%", &controls->m_volumeModel, true), 0, 0, Qt::AlignHCenter);
gridLayout->addWidget(makeKnob(tr("PAN"), tr("Panning:"), "%", &controls->m_panModel, false), 0, 1, Qt::AlignHCenter);
gridLayout->addWidget(makeKnob(tr("LEFT"), tr("Left gain:"), "%", &controls->m_leftModel, true), 1, 0, Qt::AlignHCenter);
gridLayout->addWidget(makeKnob(tr("RIGHT"), tr("Right gain:"), "%", &controls->m_rightModel, true), 1, 1, Qt::AlignHCenter);
}

} // namespace lmms::gui
7 changes: 3 additions & 4 deletions plugins/BassBooster/BassBoosterControlDialog.cpp
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Expand Up @@ -43,7 +43,6 @@ BassBoosterControlDialog::BassBoosterControlDialog( BassBoosterControls* control
QPalette pal;
pal.setBrush( backgroundRole(), PLUGIN_NAME::getIconPixmap( "artwork" ) );
setPalette( pal );
setFixedSize( 120, 60 );

auto tl = new QVBoxLayout(this);
tl->addSpacing( 4 );
Expand All @@ -52,17 +51,17 @@ BassBoosterControlDialog::BassBoosterControlDialog( BassBoosterControls* control

auto freqKnob = new Knob(KnobType::Bright26, this);
freqKnob->setModel( &controls->m_freqModel );
freqKnob->setLabel( tr( "FREQ" ) );
freqKnob->setLabel(tr("FREQ"));
freqKnob->setHintText( tr( "Frequency:" ) , "Hz" );

auto gainKnob = new Knob(KnobType::Bright26, this);
gainKnob->setModel( &controls->m_gainModel );
gainKnob->setLabel( tr( "GAIN" ) );
gainKnob->setLabel(tr("GAIN"));
gainKnob->setHintText( tr( "Gain:" ) , "" );

auto ratioKnob = new Knob(KnobType::Bright26, this);
ratioKnob->setModel( &controls->m_ratioModel );
ratioKnob->setLabel( tr( "RATIO" ) );
ratioKnob->setLabel(tr("RATIO"));
ratioKnob->setHintText( tr( "Ratio:" ) , "" );

l->addWidget( freqKnob );
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26 changes: 12 additions & 14 deletions plugins/Bitcrush/BitcrushControlDialog.cpp
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Expand Up @@ -29,6 +29,7 @@
#include "embed.h"
#include "BitcrushControlDialog.h"
#include "BitcrushControls.h"
#include "FontHelper.h"
#include "LedCheckBox.h"
#include "Knob.h"

Expand All @@ -46,37 +47,37 @@ BitcrushControlDialog::BitcrushControlDialog( BitcrushControls * controls ) :
setFixedSize( 181, 128 );

// labels
const auto labelFont = adjustedToPixelSize(font(), DEFAULT_FONT_SIZE);

auto inLabel = new QLabel(tr("IN"), this);
inLabel->setFont(labelFont);
inLabel->move( 24, 15 );

auto outLabel = new QLabel(tr("OUT"), this);
outLabel->setFont(labelFont);
outLabel->move( 139, 15 );

// input knobs
auto inGain = new Knob(KnobType::Bright26, this);
auto inGain = Knob::buildKnobWithSmallPixelFont(KnobType::Bright26, tr("GAIN"), this);
inGain->move( 16, 32 );
inGain->setModel( & controls->m_inGain );
inGain->setLabel( tr( "GAIN" ) );
inGain->setHintText( tr( "Input gain:" ) , " dBFS" );

auto inNoise = new Knob(KnobType::Bright26, this);
auto inNoise = Knob::buildKnobWithSmallPixelFont(KnobType::Bright26, tr("NOISE"), this);
inNoise->move( 14, 76 );
inNoise->setModel( & controls->m_inNoise );
inNoise->setLabel( tr( "NOISE" ) );
inNoise->setHintText( tr( "Input noise:" ) , "%" );


// output knobs
auto outGain = new Knob(KnobType::Bright26, this);
auto outGain = Knob::buildKnobWithSmallPixelFont(KnobType::Bright26, tr("GAIN"), this);
outGain->move( 138, 32 );
outGain->setModel( & controls->m_outGain );
outGain->setLabel( tr( "GAIN" ) );
outGain->setHintText( tr( "Output gain:" ) , " dBFS" );

auto outClip = new Knob(KnobType::Bright26, this);
auto outClip = Knob::buildKnobWithSmallPixelFont(KnobType::Bright26, tr("CLIP"), this);
outClip->move( 138, 76 );
outClip->setModel( & controls->m_outClip );
outClip->setLabel( tr( "CLIP" ) );
outClip->setHintText( tr( "Output clip:" ) , " dBFS");


Expand All @@ -94,24 +95,21 @@ BitcrushControlDialog::BitcrushControlDialog( BitcrushControls * controls ) :


// rate crushing knobs
auto rate = new Knob(KnobType::Bright26, this);
auto rate = Knob::buildKnobWithSmallPixelFont(KnobType::Bright26, tr("FREQ"), this);
rate->move( 59, 32 );
rate->setModel( & controls->m_rate );
rate->setLabel( tr( "FREQ" ) );
rate->setHintText( tr( "Sample rate:" ) , " Hz" );

auto stereoDiff = new Knob(KnobType::Bright26, this);
auto stereoDiff = Knob::buildKnobWithSmallPixelFont(KnobType::Bright26, tr("STEREO"), this);
stereoDiff->move( 72, 76 );
stereoDiff->setModel( & controls->m_stereoDiff );
stereoDiff->setLabel( tr( "STEREO" ) );
stereoDiff->setHintText( tr( "Stereo difference:" ) , "%" );


// depth crushing knob
auto levels = new Knob(KnobType::Bright26, this);
auto levels = Knob::buildKnobWithSmallPixelFont(KnobType::Bright26, tr("QUANT"), this);
levels->move( 92, 32 );
levels->setModel( & controls->m_levels );
levels->setLabel( tr( "QUANT" ) );
levels->setHintText( tr( "Levels:" ) , "" );
}

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5 changes: 2 additions & 3 deletions plugins/CarlaBase/Carla.cpp
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Expand Up @@ -1007,10 +1007,9 @@ void CarlaParamsView::refreshKnobs()
for (uint32_t i = 0; i < m_carlaInstrument->m_paramModels.size(); ++i)
{
bool enabled = m_carlaInstrument->m_paramModels[i]->enabled();
m_knobs.push_back(new Knob(KnobType::Dark28, m_inputScrollAreaWidgetContent));
QString name = (*m_carlaInstrument->m_paramModels[i]).displayName();
const QString name = (*m_carlaInstrument->m_paramModels[i]).displayName();
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m_knobs.push_back(Knob::buildLegacyKnob(KnobType::Dark28, name, m_inputScrollAreaWidgetContent));
m_knobs[i]->setHintText(name, "");
m_knobs[i]->setLabel(name);
m_knobs[i]->setObjectName(name); // this is being used for filtering the knobs.

// Set the newly created model to the knob.
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9 changes: 3 additions & 6 deletions plugins/CrossoverEQ/CrossoverEQControlDialog.cpp
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Expand Up @@ -49,22 +49,19 @@ CrossoverEQControlDialog::CrossoverEQControlDialog( CrossoverEQControls * contro
setFixedSize( 167, 178 );

// knobs
auto xover12 = new Knob(KnobType::Bright26, this);
auto xover12 = Knob::buildKnobWithSmallPixelFont(KnobType::Bright26, "1/2", this);
xover12->move( 29, 11 );
xover12->setModel( & controls->m_xover12 );
xover12->setLabel( "1/2" );
xover12->setHintText( tr( "Band 1/2 crossover:" ), " Hz" );

auto xover23 = new Knob(KnobType::Bright26, this);
auto xover23 = Knob::buildKnobWithSmallPixelFont(KnobType::Bright26, "2/3", this);
xover23->move( 69, 11 );
xover23->setModel( & controls->m_xover23 );
xover23->setLabel( "2/3" );
xover23->setHintText( tr( "Band 2/3 crossover:" ), " Hz" );

auto xover34 = new Knob(KnobType::Bright26, this);
auto xover34 = Knob::buildKnobWithSmallPixelFont(KnobType::Bright26, "3/4", this);
xover34->move( 109, 11 );
xover34->setModel( & controls->m_xover34 );
xover34->setLabel( "3/4" );
xover34->setHintText( tr( "Band 3/4 crossover:" ), " Hz" );

QPixmap const fader_knob(PLUGIN_NAME::getIconPixmap("fader_knob2"));
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12 changes: 4 additions & 8 deletions plugins/Delay/DelayControlsDialog.cpp
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Expand Up @@ -44,32 +44,28 @@ DelayControlsDialog::DelayControlsDialog( DelayControls *controls ) :
setPalette( pal );
setFixedSize( 300, 208 );

auto sampleDelayKnob = new TempoSyncKnob(KnobType::Bright26, this);
auto sampleDelayKnob = TempoSyncKnob::buildLegacyKnob(KnobType::Bright26, tr("DELAY"), this);
sampleDelayKnob->move( 10,14 );
sampleDelayKnob->setVolumeKnob( false );
sampleDelayKnob->setModel( &controls->m_delayTimeModel );
sampleDelayKnob->setLabel( tr( "DELAY" ) );
sampleDelayKnob->setHintText( tr( "Delay time" ) + " ", " s" );

auto feedbackKnob = new Knob(KnobType::Bright26, this);
auto feedbackKnob = Knob::buildLegacyKnob(KnobType::Bright26, tr("FDBK"), this);
feedbackKnob->move( 11, 58 );
feedbackKnob->setVolumeKnob( true) ;
feedbackKnob->setModel( &controls->m_feedbackModel);
feedbackKnob->setLabel( tr( "FDBK" ) );
feedbackKnob->setHintText( tr ( "Feedback amount" ) + " " , "" );

auto lfoFreqKnob = new TempoSyncKnob(KnobType::Bright26, this);
auto lfoFreqKnob = TempoSyncKnob::buildLegacyKnob(KnobType::Bright26, tr("RATE"), this);
lfoFreqKnob->move( 11, 119 );
lfoFreqKnob->setVolumeKnob( false );
lfoFreqKnob->setModel( &controls->m_lfoTimeModel );
lfoFreqKnob->setLabel( tr( "RATE" ) );
lfoFreqKnob->setHintText( tr ( "LFO frequency") + " ", " s" );

auto lfoAmtKnob = new TempoSyncKnob(KnobType::Bright26, this);
auto lfoAmtKnob = TempoSyncKnob::buildLegacyKnob(KnobType::Bright26, tr("AMNT"), this);
lfoAmtKnob->move( 11, 159 );
lfoAmtKnob->setVolumeKnob( false );
lfoAmtKnob->setModel( &controls->m_lfoAmountModel );
lfoAmtKnob->setLabel( tr( "AMNT" ) );
lfoAmtKnob->setHintText( tr ( "LFO amount" ) + " " , " s" );

auto outFader
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16 changes: 10 additions & 6 deletions plugins/Dispersion/DispersionControlDialog.cpp
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Expand Up @@ -31,6 +31,8 @@
#include "LcdSpinBox.h"
#include "PixmapButton.h"

#include <QHBoxLayout>


namespace lmms::gui
{
Expand All @@ -43,39 +45,41 @@ DispersionControlDialog::DispersionControlDialog(DispersionControls* controls) :
QPalette pal;
pal.setBrush(backgroundRole(), PLUGIN_NAME::getIconPixmap("artwork"));
setPalette(pal);
setFixedSize(207, 50);

auto layout = new QHBoxLayout(this);

LcdSpinBox * m_amountBox = new LcdSpinBox(3, this, "Amount");
m_amountBox->setModel(&controls->m_amountModel);
m_amountBox->move(5, 10);
m_amountBox->setLabel(tr("AMOUNT"));
m_amountBox->setToolTip(tr("Number of all-pass filters"));

Knob * freqKnob = new Knob(KnobType::Bright26, this);
freqKnob->move(59, 8);
freqKnob->setModel(&controls->m_freqModel);
freqKnob->setLabel(tr("FREQ"));
freqKnob->setHintText(tr("Frequency:") , " Hz");

Knob * resoKnob = new Knob(KnobType::Bright26, this);
resoKnob->move(99, 8);
resoKnob->setModel(&controls->m_resoModel);
resoKnob->setLabel(tr("RESO"));
resoKnob->setHintText(tr("Resonance:") , " octaves");

Knob * feedbackKnob = new Knob(KnobType::Bright26, this);
feedbackKnob->move(139, 8);
feedbackKnob->setModel(&controls->m_feedbackModel);
feedbackKnob->setLabel(tr("FEED"));
feedbackKnob->setHintText(tr("Feedback:") , "");

PixmapButton * dcButton = new PixmapButton(this, tr("DC Offset Removal"));
dcButton->move(176, 16);
dcButton->setActiveGraphic(PLUGIN_NAME::getIconPixmap("dc_active"));
dcButton->setInactiveGraphic(PLUGIN_NAME::getIconPixmap("dc_inactive"));
dcButton->setCheckable(true);
dcButton->setModel(&controls->m_dcModel);
dcButton->setToolTip(tr("Remove DC Offset"));

layout->addWidget(m_amountBox);
layout->addWidget(freqKnob);
layout->addWidget(resoKnob);
layout->addWidget(feedbackKnob);
layout->addWidget(dcButton);
}


Expand Down
3 changes: 1 addition & 2 deletions plugins/DualFilter/DualFilterControlDialog.cpp
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Expand Up @@ -35,10 +35,9 @@ namespace lmms::gui


#define makeknob( name, x, y, model, label, hint, unit ) \
Knob * name = new Knob( KnobType::Bright26, this); \
Knob * name = Knob::buildKnobWithSmallPixelFont(KnobType::Bright26, label, this); \
(name) -> move( x, y ); \
(name) ->setModel( &controls-> model ); \
(name) ->setLabel( label ); \
(name) ->setHintText( hint, unit );


Expand Down
12 changes: 4 additions & 8 deletions plugins/DynamicsProcessor/DynamicsProcessorControlDialog.cpp
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Expand Up @@ -58,32 +58,28 @@ DynProcControlDialog::DynProcControlDialog(
waveGraph->setGraphColor( QColor( 85, 204, 145 ) );
waveGraph -> setMaximumSize( 204, 205 );

auto inputKnob = new Knob(KnobType::Bright26, this);
auto inputKnob = Knob::buildKnobWithSmallPixelFont(KnobType::Bright26, tr("INPUT"), this);
inputKnob -> setVolumeKnob( true );
inputKnob -> setVolumeRatio( 1.0 );
inputKnob -> move( 26, 223 );
inputKnob->setModel( &_controls->m_inputModel );
inputKnob->setLabel( tr( "INPUT" ) );
inputKnob->setHintText( tr( "Input gain:" ) , "" );

auto outputKnob = new Knob(KnobType::Bright26, this);
auto outputKnob = Knob::buildKnobWithSmallPixelFont(KnobType::Bright26, tr("OUTPUT"), this);
outputKnob -> setVolumeKnob( true );
outputKnob -> setVolumeRatio( 1.0 );
outputKnob -> move( 76, 223 );
outputKnob->setModel( &_controls->m_outputModel );
outputKnob->setLabel( tr( "OUTPUT" ) );
outputKnob->setHintText( tr( "Output gain:" ) , "" );

auto attackKnob = new Knob(KnobType::Bright26, this);
auto attackKnob = Knob::buildKnobWithSmallPixelFont(KnobType::Bright26, tr("ATTACK"), this);
attackKnob -> move( 24, 268 );
attackKnob->setModel( &_controls->m_attackModel );
attackKnob->setLabel( tr( "ATTACK" ) );
attackKnob->setHintText( tr( "Peak attack time:" ) , "ms" );

auto releaseKnob = new Knob(KnobType::Bright26, this);
auto releaseKnob = Knob::buildKnobWithSmallPixelFont(KnobType::Bright26, tr("RELEASE"), this);
releaseKnob -> move( 74, 268 );
releaseKnob->setModel( &_controls->m_releaseModel );
releaseKnob->setLabel( tr( "RELEASE" ) );
releaseKnob->setHintText( tr( "Peak release time:" ) , "ms" );

//wavegraph control buttons
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