kis_curve_widget.h

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/*
 *  SPDX-FileCopyrightText: 2005 C. Boemann <cbo@boemann.dk>
 *  SPDX-FileCopyrightText: 2009 Dmitry Kazakov <dimula73@gmail.com>
 *
 *  SPDX-License-Identifier: GPL-2.0-or-later
 */
#ifndef KIS_CURVE_WIDGET_H
#define KIS_CURVE_WIDGET_H
 
// Qt includes.
 
#include <QWidget>
#include <QColor>
#include <QPointF>
#include <QPixmap>
#include <QMouseEvent>
#include <QKeyEvent>
#include <QEvent>
#include <QPaintEvent>
#include <optional>
 
#include <kis_cubic_curve.h>
 
#include <kritaui_export.h>
 
class QSpinBox;
 
class KRITAUI_EXPORT KisCurveWidget : public QWidget
{
    Q_OBJECT
    Q_PROPERTY(bool pointSelected READ pointSelected NOTIFY pointSelectedChanged);
 
public:
    friend class CurveEditorItem;
    KisCurveWidget(QWidget *parent = nullptr, Qt::WindowFlags f = Qt::WindowFlags());
 
    ~KisCurveWidget() override;
 
    void reset(void);
 
    void setPixmap(const QPixmap & pix);
    QPixmap getPixmap();
    
    bool pointSelected() const;
 
    enum PointConstrain
    {
        PointConstrain_None,
        PointConstrain_AlwaysCorner,
        PointConstrain_AlwaysSmooth,
    };
 
    bool setCurrentPoint(const QPointF &position, bool setAsCorner);
    bool setCurrentPointPosition(const QPointF &position);
    bool setCurrentPointAsCorner(bool setAsCorner);
    void setGlobalPointConstrain(PointConstrain constrain);
    std::optional<KisCubicCurvePoint> currentPoint() const;
    std::optional<QPointF> currentPointPosition() const;
    std::optional<bool> isCurrentPointSetAsCorner() const;
    PointConstrain globalPointConstrain() const;
 
Q_SIGNALS:
 
    void modified(void);
    void curveChanged(const KisCubicCurve &);
    void pointSelectedChanged();
    void compressorShouldEmitModified();
 
    void shouldSyncIOControls();
    void shouldFocusIOControls();
 
 
protected Q_SLOTS:
    void notifyModified();
 
    void slotCompressorShouldEmitModified();
 
 
 
protected:
 
    void keyPressEvent(QKeyEvent *) override;
    void paintEvent(QPaintEvent *) override;
    void mousePressEvent(QMouseEvent * e) override;
    void mouseReleaseEvent(QMouseEvent * e) override;
    void mouseMoveEvent(QMouseEvent * e) override;
    void leaveEvent(QEvent *) override;
    void resizeEvent(QResizeEvent *e) override;
 
public:
 
    KisCubicCurve curve();
 
    void setupInOutControls(QSpinBox *in, QSpinBox *out, int inMin, int inMax, int outMin, int outMax);
    void dropInOutControls();
 
    void addPointInTheMiddle();
 
public Q_SLOTS:
    void setCurve(KisCubicCurve inlist);
 
private:
 
    class Private;
    Private * const d {nullptr};
};
 
 
#endif /* KIS_CURVE_WIDGET_H */