mixercurveline.h

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/*
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
 * for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, see <http://www.gnu.org/licenses/>
 */

/*
 * This is inspired by the elastic nodes and edges demo in the Qt examples
 * I have reinventing the wheel!
 */

#ifndef MIXERCURVELINE_H
#define MIXERCURVELINE_H

#include <QGraphicsItem>

class MixerNode;

class Edge : public QGraphicsItem
{
public:
    Edge(MixerNode *sourceNode, MixerNode *destNode);
    ~Edge();

    MixerNode *sourceNode() const;
    void setSourceNode(MixerNode *node);

    MixerNode *destNode() const;
    void setDestNode(MixerNode *node);

    void adjust();

    enum { Type = UserType + 12 };
    int type() const { return Type; }

protected:
    QRectF boundingRect() const;
    void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget);

private:
    MixerNode *source, *dest;

    QPointF sourcePoint;
    QPointF destPoint;
    qreal arrowSize;
};

#endif // MIXERCURVELINE_H