shadow_effect.h

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// MIT License
// 
// Copyright (c) 2019 Ruhr University Bochum, Chair for Embedded Security. All Rights reserved.
// Copyright (c) 2019 Marc Fyrbiak, Sebastian Wallat, Max Hoffmann ("ORIGINAL AUTHORS"). All rights reserved.
// Copyright (c) 2021 Max Planck Institute for Security and Privacy. All Rights reserved.
// Copyright (c) 2021 Jörn Langheinrich, Julian Speith, Nils Albartus, René Walendy, Simon Klix ("ORIGINAL AUTHORS"). All Rights reserved.
// 
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
// 
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
 
#pragma once
 
#include <QGraphicsEffect>
 
namespace hal
{
 
    class ShadowEffect : public QGraphicsEffect
    {
        Q_OBJECT
 
    public:
        explicit ShadowEffect(QObject* parent = nullptr);
 
        void draw(QPainter* painter);
 
        QRectF boundingRectFor(const QRectF& rect) const;
 
        inline void setDistance(qreal distance)
        {
            mDistance = distance;
            updateBoundingRect();
        }
 
        inline qreal distance() const
        {
            return mDistance;
        }
 
        inline void setBlurRadius(qreal blurRadius)
        {
            mBlurRadius = blurRadius;
            updateBoundingRect();
        }
 
        inline qreal blurRadius() const
        {
            return mBlurRadius;
        }
 
        inline void setColor(const QColor& color)
        {
            mColor = color;
        }
 
        inline QColor color() const
        {
            return mColor;
        }
 
    private:
        qreal mDistance;
        qreal mBlurRadius;
        QColor mColor;
    };
}