blob: 2e2b8c8d6ba99329aa370cb57e13dd998567445d (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
|
// 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);
}
|