vcontrolpointspline.h

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/***************************************************************************
 *                                                                         *
 *   Copyright (C) 2017  Seamly, LLC                                       *
 *                                                                         *
 *   https://github.com/fashionfreedom/seamly2d                             *
 *                                                                         *
 ***************************************************************************
 **
 **  Seamly2D 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.
 **
 **  Seamly2D 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 Seamly2D.  If not, see <http://www.gnu.org/licenses/>.
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 **************************************************************************
 
 ************************************************************************
 **
 **  @file   vcontrolpointspline.h
 **  @author Roman Telezhynskyi <dismine(at)gmail.com>
 **  @date   November 15, 2013
 **
 **  @brief
 **  @copyright
 **  This source code is part of the Valentine project, a pattern making
 **  program, whose allow create and modeling patterns of clothing.
 **  Copyright (C) 2013-2015 Seamly2D project
 **  <https://github.com/fashionfreedom/seamly2d> All Rights Reserved.
 **
 **  Seamly2D 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.
 **
 **  Seamly2D 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 Seamly2D.  If not, see <http://www.gnu.org/licenses/>.
 **
 *************************************************************************/
 
#ifndef VCONTROLPOINTSPLINE_H
#define VCONTROLPOINTSPLINE_H
 
#include <qcompilerdetection.h>
#include <QGraphicsItem>
#include <QMetaObject>
#include <QObject>
#include <QPointF>
#include <QString>
#include <QVariant>
#include <QtGlobal>
 
#include "../vgeometry/vgeometrydef.h"
#include "../vgeometry/vsplinepath.h"
#include "../vmisc/def.h"
#include "scene_rect.h"
 
/**
 * @brief The VControlPointSpline class control spline point.
 */
class VControlPointSpline : public QObject, public SceneRect
{
    Q_OBJECT
public:
                        VControlPointSpline(const qint32 &indexSpline, SplinePointPosition position,
                                            QGraphicsItem * parent = nullptr);
                        VControlPointSpline(const qint32 &indexSpline, SplinePointPosition position,
                                            const QPointF &controlPoint, const QPointF &splinePoint,
                                            bool freeAngle, bool freeLength, QGraphicsItem * parent = nullptr);
    virtual            ~VControlPointSpline() =default;
 
    virtual int         type() const Q_DECL_OVERRIDE {return Type;}
    enum                { Type = UserType + static_cast<int>(Vis::ControlPointSpline)};
 
    virtual void        paint(QPainter *painter, const QStyleOptionGraphicsItem *option,
                              QWidget *widget = nullptr) Q_DECL_OVERRIDE;
signals:
    /**
     * @brief ControlPointChangePosition emit when control point change position.
     * @param indexSpline index spline in list.
     * @param position position point in spline.
     * @param pos new posotion.
     */
    void                ControlPointChangePosition(const qint32 &indexSpline, SplinePointPosition position,
                                                   const QPointF &pos);
    /**
     * @brief showContextMenu emit when need show tool's context menu.
     * @param event context menu event.
     */
    void                showContextMenu(QGraphicsSceneContextMenuEvent *event);
 
public slots:
    void                refreshCtrlPoint(const qint32 &indexSpline, SplinePointPosition pos, const QPointF &controlPoint,
                                       const QPointF &splinePoint, bool freeAngle = true, bool freeLength = true);
    void                setEnabledPoint(bool enable);
 
protected:
    /** @brief controlLine pointer to line control point. */
    VScaledLine        *controlLine;
 
    virtual void        hoverEnterEvent ( QGraphicsSceneHoverEvent * event ) Q_DECL_OVERRIDE;
    virtual void        hoverLeaveEvent ( QGraphicsSceneHoverEvent * event ) Q_DECL_OVERRIDE;
    QVariant            itemChange ( GraphicsItemChange change, const QVariant &value ) Q_DECL_OVERRIDE;
    virtual void        mousePressEvent( QGraphicsSceneMouseEvent * event ) Q_DECL_OVERRIDE;
    virtual void        mouseReleaseEvent ( QGraphicsSceneMouseEvent * event ) Q_DECL_OVERRIDE;
    virtual void        contextMenuEvent (QGraphicsSceneContextMenuEvent *event ) Q_DECL_OVERRIDE;
 
private:
    Q_DISABLE_COPY(VControlPointSpline)
    /** @brief indexSpline index spline in list.. */
    qint32              indexSpline;
 
    /** @brief position position point in spline. */
    SplinePointPosition position;
 
    bool                freeAngle;
    bool                freeLength;
 
    void                init();
    void                setCtrlLine(const QPointF &controlPoint, const QPointF &splinePoint);
};
 
#endif // VCONTROLPOINTSPLINE_H