// scale and adjust the upper slider group
void TriangleDensityWidget::resetSliders(double norm)
{
TriangleList triangles = triangleScene->triangles();
int n = 0;
foreach (Triangle* t, triangles)
{
QSlider* sl = sliders[n];
QLabel* la = slider_names[n];
sl->blockSignals(true);
sl->setSliderPosition((int)( t->xform()->density / norm * 1000. ));
sl->blockSignals(false);
sl->setVisible(true);
la->setVisible(true);
sl->setToolTip(triangleScene->getInfoLabel(t));
if (genome_ptr->final_xform_enable
&& genome_ptr->final_xform_index == n)
{
sl->setEnabled(false);
la->setEnabled(false);
}
else
{
sl->setEnabled(true);
la->setEnabled(true);
}
n++;
}
void QtSliderFactory::slotSingleStepChanged(QtProperty *property, int step)
{
if (!m_createdEditors.contains(property))
return;
QListIterator<QSlider *> itEditor(m_createdEditors[property]);
while (itEditor.hasNext()) {
QSlider *editor = itEditor.next();
editor->blockSignals(true);
editor->setSingleStep(step);
editor->blockSignals(false);
}
}
void QtSliderFactory::slotRangeChanged(QtProperty *property, int min, int max)
{
if (!m_createdEditors.contains(property))
return;
QtIntPropertyManager *manager = this->propertyManager(property);
if (!manager)
return;
QListIterator<QSlider *> itEditor(m_createdEditors[property]);
while (itEditor.hasNext()) {
QSlider *editor = itEditor.next();
editor->blockSignals(true);
editor->setRange(min, max);
editor->setValue(manager->value(property));
editor->blockSignals(false);
}
}
QWidget* CanvasContainer::scaleSlider()
{
if (!scaleSliderWidget)
{
scaleSliderWidget = new QWidget(this);
QHBoxLayout *layout = new QHBoxLayout(scaleSliderWidget);
QSlider *slider = new QSlider(Qt::Horizontal, scaleSliderWidget);
QLabel *label = new QLabel("100%", scaleSliderWidget);
label->setFixedWidth(label->fontMetrics().width("100.%"));
label->setAlignment(Qt::AlignHCenter | Qt::AlignVCenter);
//label->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed); //not working?
scaleSliderWidget->setLayout(layout);
layout->addWidget(slider);
layout->addWidget(label);
layout->setContentsMargins(0, 0, 0, 0);
qreal internalFactor = -100 * qLn(MIN_SCALE_FACTOR) / MIN_SCALE_FACTOR / qLn(2);
slider->setRange(-qCeil(MIN_SCALE_FACTOR * internalFactor),
qCeil(MAX_SCALE_FACTOR - 1) * 100);
slider->setPageStep(100);
slider->setTickPosition(QSlider::TicksBelow);
auto setScaleOrigin = [=]()
{
if (proxy)
{
QPointF position = proxy->mapFromScene(mapToScene(viewport()->rect().center()));
if (proxy->rect().contains(position))
proxy->setTransformOriginPoint(position);
}
};
auto calculateScale = [=](int sliderValue)
{
if (sliderValue >= 0)
{
qreal newScale = 1.0 + 0.01 * sliderValue;
if (!qFuzzyCompare(newScale, currentScaleFactor()))
{
setScaleOrigin();
setScaleFactor(1.0 + 0.01 * sliderValue);
label->setText(QString("%1%").arg(100 + sliderValue));
}
}
else
{
qreal newScale = qPow(MIN_SCALE_FACTOR, -sliderValue / internalFactor / MIN_SCALE_FACTOR);
if (!qFuzzyCompare(newScale, currentScaleFactor()))
{
setScaleOrigin();
setScaleFactor(newScale);
label->setText(QString("%1%").arg(newScale * 100, 0, 'f', 1));
}
}
};
auto calculateValue = [=](qreal scaleFactor)
{
slider->blockSignals(true);
if (scaleFactor >= 1.0)
{
int newValue = 100 * scaleFactor - 100;
if (newValue != slider->value())
{
slider->setValue(newValue);
label->setText(QString("%1%").arg(qFloor(100 * scaleFactor)));
}
}
else
{
int newValue = -internalFactor * MIN_SCALE_FACTOR / qLn(MIN_SCALE_FACTOR) * qLn(scaleFactor);
if (newValue != slider->value())
{
slider->setValue(newValue);
label->setText(QString("%1%").arg(100 * scaleFactor, 0, 'f', 1));
}
}
slider->blockSignals(false);
};
connect(slider, &QSlider::valueChanged, calculateScale);
connect(this, &CanvasContainer::scaled, calculateValue);
}
return scaleSliderWidget;
}