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zhuzichu
2023-06-30 12:08:57 +08:00
parent 9f9e48659b
commit f13f1727af
3 changed files with 73 additions and 76 deletions
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43
example/src/component/CircularReveal.cpp
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@ -1,6 +1,47 @@
#include "CircularReveal.h"
#include <QGuiApplication>
#include <QQuickItemGrabResult>
#include <QPainterPath>
CircularReveal::CircularReveal()
CircularReveal::CircularReveal(QQuickItem* parent) : QQuickPaintedItem(parent)
{
_anim = new QPropertyAnimation(this, "radius", this);
_anim->setDuration(333);
_anim->setEasingCurve(QEasingCurve::OutCubic);
connect(_anim, &QPropertyAnimation::finished,this,[=](){
setVisible(false);
});
connect(this,&CircularReveal::radiusChanged,this,[=](){
update();
});
}
void CircularReveal::paint(QPainter* painter)
{
painter->save();
painter->drawImage(QRect(0, 0, static_cast<int>(width()), static_cast<int>(height())), _source);
QPainterPath path;
path.moveTo(_center.x(),_center.y());
path.addEllipse(QPointF(_center.x(),_center.y()), _radius, _radius);
painter->setCompositionMode(QPainter::CompositionMode_Clear);
painter->fillPath(path, Qt::black);
painter->restore();
}
void CircularReveal::start(int w,int h,const QPoint& center,int radius){
_anim->setStartValue(0);
_anim->setEndValue(radius);
_center = center;
_grabResult = _target->grabToImage(QSize(w,h));
connect(_grabResult.data(), &QQuickItemGrabResult::ready, this, &CircularReveal::handleGrabResult);
}
void CircularReveal::handleGrabResult(){
_grabResult.data()->image().swap(_source);
update();
setVisible(true);
Q_EMIT imageChanged();
_anim->start();
}

21
example/src/component/CircularReveal.h
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@ -2,15 +2,28 @@
#define CIRCULARREVEAL_H
#include <QQuickItem>
#include <QQuickPaintedItem>
#include <QPainter>
#include <QPropertyAnimation>
#include "src/stdafx.h"
class CircularReveal : public QQuickItem
class CircularReveal : public QQuickPaintedItem
{
Q_OBJECT
Q_PROPERTY_AUTO(QQuickItem*,target)
Q_PROPERTY_AUTO(int,radius)
public:
CircularReveal();
signals:
CircularReveal(QQuickItem* parent = nullptr);
void paint(QPainter* painter) override;
Q_INVOKABLE void start(int w,int h,const QPoint& center,int radius);
Q_SIGNAL void imageChanged();
Q_SLOT void handleGrabResult();
private:
QImage _source;
QPropertyAnimation* _anim;
QPoint _center;
QSharedPointer<QQuickItemGrabResult> _grabResult;
};
#endif // CIRCULARREVEAL_H