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80 lines
2.0 KiB
80 lines
2.0 KiB
/* ============================================================
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*
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* Copyright 2004-2005 by Gilles Caulier (original work as digikam curveswidget)
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* Copyright 2005 by Casper Boemann (reworked to be generic)
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*
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* This program is free software; you can redistribute it
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* and/or modify it under the terms of the GNU General
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* Public License as published by the Free Software Foundation;
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* either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* ============================================================ */
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#ifndef KCURVE_H
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#define KCURVE_H
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// Qt includes.
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#include <qwidget.h>
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#include <qcolor.h>
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#include <qpair.h>
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#include <qsortedlist.h>
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#include <koffice_export.h>
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class KRITAUI_EXPORT KCurve : public QWidget
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{
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Q_OBJECT
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public:
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KCurve(QWidget *parent = 0, const char *name = 0, WFlags f = 0);
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virtual ~KCurve();
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void reset(void);
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void setCurveGuide(QColor color);
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void setPixmap(QPixmap pix);
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signals:
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void modified(void);
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protected:
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void keyPressEvent(QKeyEvent *);
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void paintEvent(QPaintEvent *);
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void mousePressEvent (QMouseEvent * e);
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void mouseReleaseEvent ( QMouseEvent * e );
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void mouseMoveEvent ( QMouseEvent * e );
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void leaveEvent ( QEvent * );
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public:
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static double getCurveValue(QPtrList<QPair<double,double> > &curve, double x);
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double getCurveValue(double x);
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QPtrList<QPair<double,double> > getCurve();
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void setCurve(QPtrList<QPair<double,double> >inlist);
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private:
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double m_leftmost;
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double m_rightmost;
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QPair<double,double> *m_grab_point;
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bool m_dragging;
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double m_grabOffsetX;
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double m_grabOffsetY;
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bool m_readOnlyMode;
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bool m_guideVisible;
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QColor m_colorGuide;
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QPtrList<QPair<double,double> > m_points;
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QPixmap *m_pix;
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};
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#endif /* KCURVE_H */
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