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#include <QPainter>
#include "Ripple.h"
#include "RippleOverlay.h"
RippleOverlay::RippleOverlay(QWidget *parent)
: OverlayWidget(parent)
, use_clip_(false)
{
setAttribute(Qt::WA_TransparentForMouseEvents);
setAttribute(Qt::WA_NoSystemBackground);
}
void
RippleOverlay::addRipple(Ripple *ripple)
{
ripple->setOverlay(this);
ripples_.push_back(ripple);
ripple->start();
}
void
RippleOverlay::addRipple(const QPoint &position, qreal radius)
{
Ripple *ripple = new Ripple(position);
ripple->setRadiusEndValue(radius);
addRipple(ripple);
}
void
RippleOverlay::removeRipple(Ripple *ripple)
{
if (ripples_.removeOne(ripple))
delete ripple;
}
void
RippleOverlay::paintEvent(QPaintEvent *event)
{
Q_UNUSED(event)
QPainter painter(this);
painter.setRenderHint(QPainter::Antialiasing);
painter.setPen(Qt::NoPen);
if (use_clip_)
painter.setClipPath(clip_path_);
for (auto it = ripples_.constBegin(); it != ripples_.constEnd(); ++it)
paintRipple(&painter, *it);
}
void
RippleOverlay::paintRipple(QPainter *painter, Ripple *ripple)
{
const qreal radius = ripple->radius();
const QPointF center = ripple->center();
painter->setOpacity(ripple->opacity());
painter->setBrush(ripple->brush());
painter->drawEllipse(center, radius, radius);
}
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