KisCurveWidgetControlsManager.h

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/*
 *  SPDX-FileCopyrightText: 2022 Dmitry Kazakov <dimula73@gmail.com>
 *
 *  SPDX-License-Identifier: GPL-2.0-or-later
 */
 
#ifndef KISCURVEWIDGETCONTROLSMANAGER_H
#define KISCURVEWIDGETCONTROLSMANAGER_H
 
#include <kritaui_export_instance.h>
#include <QObject>
 
class QSpinBox;
class QDoubleSpinBox;
 
namespace detail
{
template <typename SpinBox>
struct value_of_spin_box;
 
template <>
struct value_of_spin_box<QSpinBox> {
    using type = int;
};
 
template <>
struct value_of_spin_box<QDoubleSpinBox> {
    using type = qreal;
};
 
template <typename SpinBox>
using value_of_spin_box_t = typename value_of_spin_box<SpinBox>::type;
 
} // namespace detail
 
 
class KisCurveWidget;
 
class KRITAUI_EXPORT KisCurveWidgetControlsManagerBase : public QObject
{
    Q_OBJECT
public:
    KisCurveWidgetControlsManagerBase(KisCurveWidget *curveWidget);
    ~KisCurveWidgetControlsManagerBase();
 
protected Q_SLOTS:
    virtual void inOutChanged() = 0;
    virtual void syncIOControls() = 0;
    virtual void focusIOControls() = 0;
 
protected:
    KisCurveWidget *m_curveWidget {nullptr};
};
 
template <typename SpinBox>
class KRITAUI_EXPORT_TEMPLATE KisCurveWidgetControlsManager : public KisCurveWidgetControlsManagerBase
{
public:
    using ValueType = detail::value_of_spin_box_t<SpinBox>;
public:
    KisCurveWidgetControlsManager(KisCurveWidget *curveWidget);
    KisCurveWidgetControlsManager(KisCurveWidget *curveWidget,
                                  SpinBox *in, SpinBox *out,
                                  ValueType inMin, ValueType inMax,
                                  ValueType outMin, ValueType outMax);
    ~KisCurveWidgetControlsManager();
 
    void setupInOutControls(SpinBox *in, SpinBox *out,
                            ValueType inMin, ValueType inMax,
                            ValueType outMin, ValueType outMax);
    void dropInOutControls();
 
protected:
    void inOutChanged() override;
    void syncIOControls() override;
    void focusIOControls() override;
 
private:
    /* In/Out controls */
    SpinBox *m_intIn {nullptr};
    SpinBox *m_intOut {nullptr};
 
    /* Working range of them */
    ValueType m_inMin {0};
    ValueType m_inMax {0};
    ValueType m_outMin {0};
    ValueType m_outMax {0};
};
 
extern template class KisCurveWidgetControlsManager<QSpinBox>;
extern template class KisCurveWidgetControlsManager<QDoubleSpinBox>;
 
using KisCurveWidgetControlsManagerInt = KisCurveWidgetControlsManager<QSpinBox>;
using KisCurveWidgetControlsManagerDouble = KisCurveWidgetControlsManager<QDoubleSpinBox>;
 
 
#endif // KISCURVEWIDGETCONTROLSMANAGER_H