mirror of
https://github.com/crystalidea/qt6windows7.git
synced 2024-11-24 04:20:46 +08:00
32 lines
688 B
C++
32 lines
688 B
C++
|
// Copyright (C) 2016 The Qt Company Ltd.
|
||
|
|
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
|
||
|
|
|
||
|
|
#include "blureffect.h"
|
||
|
|
|
||
|
|
#include <QDebug>
|
||
|
|
|
||
|
|
BlurEffect::BlurEffect(QGraphicsItem *item)
|
||
|
|
: QGraphicsBlurEffect()
|
||
|
|
, m_baseLine(200), item(item)
|
||
|
|
{
|
||
|
|
}
|
||
|
|
|
||
|
|
void BlurEffect::adjustForItem()
|
||
|
|
{
|
||
|
|
qreal y = m_baseLine - item->pos().y();
|
||
|
|
qreal radius = qBound(qreal(0.0), y / 32, qreal(16.0));
|
||
|
|
setBlurRadius(radius);
|
||
|
|
}
|
||
|
|
|
||
|
|
QRectF BlurEffect::boundingRect() const
|
||
|
|
{
|
||
|
|
const_cast<BlurEffect *>(this)->adjustForItem();
|
||
|
|
return QGraphicsBlurEffect::boundingRect();
|
||
|
|
}
|
||
|
|
|
||
|
|
void BlurEffect::draw(QPainter *painter)
|
||
|
|
{
|
||
|
|
adjustForItem();
|
||
|
|
QGraphicsBlurEffect::draw(painter);
|
||
|
|
}
|