node_drag_shadow.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 <QGraphicsItem>
#include <QRectF>
#include <QList>
 
namespace hal
{
    class NodeDragShadow : public QGraphicsItem
    {
 
    public:
        enum class DragCue
        {
            Movable   = 0,
            Swappable = 1,
            Rejected  = 2
        };
 
        NodeDragShadow();
 
        void start(const QPointF& posF, const QSizeF& sizeF);
        void stop();
 
        /*
        qreal width() const;
        qreal height() const;
        QSizeF size() const;
 
        void setWidth(const qreal width);
        void setHeight(const qreal height);
*/
 
        void setVisualCue(const DragCue cue);
        QList<QPoint> multiMoveGridPositions() const;
 
        static void setLod(const qreal lod);
        static void loadSettings();
 
    protected:
        void paint(QPainter* painter, const QStyleOptionGraphicsItem* option, QWidget* widget = nullptr) override;
        QRectF boundingRect() const override;
        QPainterPath shape() const override;
 
    private:
        static qreal sLod;
        static QPen sPen;
        static QColor sColorPen[];
        static QColor sColorSolid[];
        static QColor sColorTranslucent[];
 
        DragCue mCue;
        QRectF mRect;
    };
}    // namespace hal