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32 lines
688 B
C++
32 lines
688 B
C++
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// Copyright (C) 2016 The Qt Company Ltd.
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// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
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#include "blureffect.h"
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#include <QDebug>
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BlurEffect::BlurEffect(QGraphicsItem *item)
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: QGraphicsBlurEffect()
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, m_baseLine(200), item(item)
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{
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}
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void BlurEffect::adjustForItem()
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{
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qreal y = m_baseLine - item->pos().y();
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qreal radius = qBound(qreal(0.0), y / 32, qreal(16.0));
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setBlurRadius(radius);
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}
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QRectF BlurEffect::boundingRect() const
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{
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const_cast<BlurEffect *>(this)->adjustForItem();
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return QGraphicsBlurEffect::boundingRect();
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}
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void BlurEffect::draw(QPainter *painter)
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{
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adjustForItem();
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QGraphicsBlurEffect::draw(painter);
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}
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