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make knobs easier to tune

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This commit is contained in:
Andrew Kelley
2009-04-27 17:53:24 -07:00
parent f40b61045a
commit 57824bb2d1
3 changed files with 30 additions and 5 deletions
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29
src/gui/widgets/knob.cpp
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@@ -85,6 +85,9 @@ knob::knob( int _knob_num, QWidget * _parent, const QString & _name ) :
setFixedSize( m_knobPixmap->width(), m_knobPixmap->height() );
}
m_fineModelValue = model()->value();
setTotalAngle( 270.0f );
setInnerRadius( 1.0f );
setOuterRadius( 10.0f );
@@ -262,7 +265,7 @@ bool knob::updateAngle( void )
int angle = 0;
if( model() && model()->maxValue() != model()->minValue() )
{
float a = ( model()->value() - 0.5 * ( model()->minValue() +
float a = ( m_fineModelValue - 0.5 * ( model()->minValue() +
model()->maxValue() ) ) /
( model()->maxValue() - model()->minValue() ) *
m_totalAngle;
@@ -375,9 +378,15 @@ float knob::getValue( const QPoint & _p )
{
if( engine::getMainWindow()->isShiftPressed() )
{
return( ( _p.y() - m_origMousePos.y() ) * model()->step<float>() );
//return( ( _p.y() - m_origMousePos.y() ) * model()->step<float>() );
return( ( _p.y() - m_origMousePos.y() ) * pageSize() );
}
else
{
return (float)( _p.y() - m_origMousePos.y() ) / (float)(m_pixelHeight)
* (model()->maxValue() - model()->minValue()) ;
//+ model()->minValue();
}
return( ( _p.y() - m_origMousePos.y() ) * pageSize() );
}
@@ -563,7 +572,19 @@ void knob::wheelEvent( QWheelEvent * _we )
void knob::setPosition( const QPoint & _p )
{
model()->setValue( model()->value() - getValue( _p ) );
// this variable will be exactly where the knob is turned to
m_fineModelValue -= getValue( _p );
if( m_fineModelValue < model()->minValue() )
{
m_fineModelValue = model()->minValue();
}
else if( m_fineModelValue > model()->maxValue() )
{
m_fineModelValue = model()->maxValue();
}
// this can round
model()->setValue( m_fineModelValue );
}