107 lines
2.8 KiB
C++
107 lines
2.8 KiB
C++
#include "sliderthumb.h"
|
|
#include <QEvent>
|
|
#include <QPainter>
|
|
#include <QDebug>
|
|
#include "lib/style.h"
|
|
#include "slider.h"
|
|
|
|
SliderThumb::SliderThumb(Slider *slider)
|
|
: QWidget(slider->parentWidget()),
|
|
slider(slider),
|
|
_diameter(11),
|
|
_borderWidth(2),
|
|
_haloSize(0)
|
|
{
|
|
slider->installEventFilter(this);
|
|
setAttribute(Qt::WA_TransparentForMouseEvents, true);
|
|
|
|
connect(slider, SIGNAL(sliderMoved(int)), this, SLOT(update()));
|
|
connect(slider, SIGNAL(valueChanged(int)), this, SLOT(update()));
|
|
}
|
|
|
|
SliderThumb::~SliderThumb()
|
|
{
|
|
}
|
|
|
|
bool SliderThumb::eventFilter(QObject *obj, QEvent *event)
|
|
{
|
|
QEvent::Type type = event->type();
|
|
|
|
if (QEvent::ParentChange == type) {
|
|
setParent(slider->parentWidget());
|
|
} else if (QEvent::Resize == type || QEvent::Move == type) {
|
|
QWidget *widget;
|
|
if ((widget = parentWidget())) {
|
|
setGeometry(widget->rect());
|
|
}
|
|
}
|
|
return QWidget::eventFilter(obj, event);
|
|
}
|
|
|
|
void SliderThumb::paintEvent(QPaintEvent *event)
|
|
{
|
|
QPainter painter(this);
|
|
|
|
// Halo
|
|
|
|
QBrush brush;
|
|
brush.setStyle(Qt::SolidPattern);
|
|
brush.setColor(_haloColor);
|
|
painter.setBrush(brush);
|
|
painter.setPen(Qt::NoPen);
|
|
|
|
painter.setRenderHint(QPainter::Antialiasing);
|
|
|
|
QPointF disp = Qt::Horizontal == slider->orientation()
|
|
? QPointF(SLIDER_MARGIN + slider->thumbOffset(), slider->height()/2)
|
|
: QPointF(slider->width()/2, SLIDER_MARGIN + slider->thumbOffset());
|
|
|
|
QRectF halo((slider->pos() - QPointF(_haloSize, _haloSize)/2) + disp,
|
|
QSizeF(_haloSize, _haloSize));
|
|
|
|
painter.drawEllipse(halo);
|
|
|
|
// Knob
|
|
|
|
brush.setColor(slider->value() > slider->minimum()
|
|
? (slider->isEnabled()
|
|
? _fillColor : Style::instance().themeColor("disabled"))
|
|
: _minFillColor);
|
|
painter.setBrush(brush);
|
|
|
|
if (_borderWidth > 0) {
|
|
QPen pen;
|
|
pen.setColor(Style::instance().themeColor("accent3"));
|
|
pen.setWidthF(_borderWidth);
|
|
painter.setPen(pen);
|
|
} else {
|
|
painter.setPen(Qt::NoPen);
|
|
}
|
|
|
|
QRectF geometry = Qt::Horizontal == slider->orientation()
|
|
? QRectF(slider->thumbOffset(), slider->height()/2 - SLIDER_MARGIN,
|
|
SLIDER_MARGIN*2, SLIDER_MARGIN*2).translated(slider->pos())
|
|
: QRectF(slider->width()/2 - SLIDER_MARGIN, slider->thumbOffset(),
|
|
SLIDER_MARGIN*2, SLIDER_MARGIN*2).translated(slider->pos());
|
|
|
|
QRectF thumb(0, 0, _diameter, _diameter);
|
|
|
|
thumb.moveCenter(geometry.center());
|
|
|
|
painter.drawEllipse(thumb);
|
|
|
|
#ifdef DEBUG_LAYOUT
|
|
QPen pen;
|
|
pen.setColor(Qt::red);
|
|
pen.setWidth(2);
|
|
painter.setPen(pen);
|
|
painter.setBrush(Qt::NoBrush);
|
|
|
|
painter.drawRect(geometry);
|
|
|
|
painter.drawRect(rect().adjusted(0, 0, -2, -2));
|
|
#endif
|
|
|
|
QWidget::paintEvent(event);
|
|
}
|