QCurveWidget.h

/*
 *   Copyright 2011, 2012 Lukas Jirkovsky
 *
 *   This file is part of FotoSHOCK.
 *
 *   FotoSHOCK 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, version 3 of the License.
 *
 *   FotoSHOCK 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 FotoSHOCK.  If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef QCURVEWIDGET_H
#define QCURVEWIDGET_H

#include "HermiteCurve.h"

#include <GraphNode.hpp>

#include <QtGui/QWidget>
#include <QtGui/QCursor>

class QCurveWidget : public QWidget
{
Q_OBJECT
    public:
        QCurveWidget(FotoSHOCKcore::GraphNode* node, const uint x, const uint y, HermiteCurve* curves, std::size_t numOfCurves, QWidget* parent = 0);
        virtual ~QCurveWidget();
    public slots:
        void visibleAll(bool visibility);
        void setActive(int active);
    protected:
        virtual void mousePressEvent(QMouseEvent *event);
        virtual void mouseReleaseEvent(QMouseEvent *event);
        virtual void mouseMoveEvent(QMouseEvent *event);
        virtual void paintEvent (QPaintEvent * event);
    private:
        // draw the whole curve
        inline void drawCurve(QPainter& p, std::size_t active);
        inline void drawHermite(QPainter& p, const QHermiteControlPoint& x0, const QHermiteControlPoint& x1);

        HermiteCurve* curvesArray;
        std::size_t curvesArraySize;
        std::size_t activeCurve;

        bool m_visibleAll;

        // the point which would be moved if I press mouse button
        // -1 if there is none
        int movePointIndex;
        // true if I'm moving some point right now
        bool movingPoint;

        FotoSHOCKcore::GraphNode* m_parentNode;
};

#endif // QCURVEWIDGET_H