82 lines
1.9 KiB
C++
82 lines
1.9 KiB
C++
#include "rippleoverlay.h"
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#include <QDebug>
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#include <QPainter>
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#include "ripple.h"
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RippleOverlay::RippleOverlay(QWidget *parent)
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: QWidget(parent),
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useClip(false)
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{
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setAttribute(Qt::WA_TransparentForMouseEvents);
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setAttribute(Qt::WA_NoSystemBackground);
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}
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RippleOverlay::~RippleOverlay()
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{
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}
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void RippleOverlay::addRipple(const QPoint &position, qreal radius)
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{
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Ripple *ripple = new Ripple(position, this);
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ripple->setRadiusEndValue(radius);
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addRipple(ripple);
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}
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void RippleOverlay::addRipple(Ripple *ripple)
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{
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ripple->setOverlay(this);
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ripples.push_back(ripple);
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connect(ripple, SIGNAL(finished()), this, SLOT(deleteRipple()));
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ripple->startAnimation();
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}
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void RippleOverlay::setColor(const QColor &color)
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{
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QList<Ripple *>::const_iterator i;
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for (i = ripples.begin(); i != ripples.end(); ++i)
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(*i)->setColor(color);
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}
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void RippleOverlay::paintEvent(QPaintEvent *event)
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{
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Q_UNUSED(event)
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QPainter painter(this);
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painter.setRenderHint(QPainter::Antialiasing);
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painter.setPen(Qt::NoPen);
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if (useClip) {
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painter.setClipPath(clipPath);
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}
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QList<Ripple *>::const_iterator i;
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for (i = ripples.begin(); i != ripples.end(); ++i)
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{
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const Ripple *ripple = *i;
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const qreal radius = ripple->radius();
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const QPointF ¢er = ripple->center();
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painter.setOpacity(ripple->opacity());
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painter.setBrush(ripple->brush());
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painter.drawEllipse(center, radius, radius);
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}
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#ifdef DEBUG_LAYOUT
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QPen pen;
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pen.setColor(Qt::red);
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pen.setWidth(2);
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painter.setOpacity(1);
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painter.setPen(pen);
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painter.setBrush(Qt::NoBrush);
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painter.drawRect(rect());
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#endif
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}
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void RippleOverlay::deleteRipple()
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{
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if (ripples.isEmpty()) {
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qWarning() << "RippleOverlay::deleteRipple was called when no ripples were active.";
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return;
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}
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ripples.takeFirst()->deleteLater();
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}
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