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Add fine tune for STF slider

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This commit is contained in:
Dušan Poizl
2022-12-22 12:45:47 +01:00
parent 5cc8fdd83d
commit c1aca3ca65
2 changed files with 28 additions and 3 deletions
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stfslider.cpp
+26 -3
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@@ -21,6 +21,8 @@ STFSlider::STFSlider(QWidget *parent) : QWidget(parent)
m_midPoint = 0.5;
m_whitePoint = 1;
m_grabbed = -1;
m_fineTune = false;
setToolTip(tr("Press Shift for fine tuning"));
}
float STFSlider::blackPoint() const
@@ -94,20 +96,34 @@ void STFSlider::mouseMoveEvent(QMouseEvent *event)
else
unsetCursor();
qreal x = (qreal)event->x()/width();
if(event->modifiers() & Qt::ShiftModifier && !m_fineTune)
{
m_fineTune = true;
m_fineTuneX = x;
}
if(!(event->modifiers() & Qt::ShiftModifier) && m_fineTune)
m_fineTune = false;
if(m_fineTune)
{
x = m_fineTuneX + (x - m_fineTuneX) * 0.2;
}
switch(m_grabbed)
{
case 0:
m_blackPoint = clamp((qreal)event->x()/width());
m_blackPoint = clamp(x);
m_whitePoint = std::max(m_whitePoint, m_blackPoint);
QToolTip::showText(event->globalPos(), QString::number(m_blackPoint), this);
break;
case 1:
m_midPoint = ((qreal)event->x()/width() - m_blackPoint) / (m_whitePoint - m_blackPoint);
m_midPoint = (x - m_blackPoint) / (m_whitePoint - m_blackPoint);
m_midPoint = clamp(m_midPoint);
QToolTip::showText(event->globalPos(), QString::number(m_midPoint), this);
break;
case 2:
m_whitePoint = clamp((qreal)event->x()/width());
m_whitePoint = clamp(x);
m_blackPoint = std::min(m_blackPoint, m_whitePoint);
QToolTip::showText(event->globalPos(), QString::number(m_whitePoint), this);
break;
@@ -121,6 +137,12 @@ void STFSlider::mouseMoveEvent(QMouseEvent *event)
void STFSlider::mousePressEvent(QMouseEvent *event)
{
if(event->modifiers() & Qt::ShiftModifier)
{
m_fineTune = true;
m_fineTuneX = (qreal)event->x()/width();
}
if(std::abs((m_blackPoint + (m_whitePoint - m_blackPoint) * m_midPoint)*width() - event->x()) < 5)
m_grabbed = 1;
else if(std::abs(m_blackPoint*width() - event->x()) < 5)
@@ -134,5 +156,6 @@ void STFSlider::mousePressEvent(QMouseEvent *event)
void STFSlider::mouseReleaseEvent(QMouseEvent *)
{
m_grabbed = -1;
m_fineTune = false;
emit paramChanged(m_blackPoint, midPoint(), m_whitePoint);
}