KisAnimCurvesKeyDelegate.h

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/*
 *  SPDX-FileCopyrightText: 2016 Jouni Pentikäinen <joupent@gmail.com>
 *
 *  SPDX-License-Identifier: GPL-2.0-or-later
 */
 
#ifndef _KIS_ANIMATION_CURVES_KEYFRAME_DELEGATE_H
#define _KIS_ANIMATION_CURVES_KEYFRAME_DELEGATE_H
 
#include <qabstractitemdelegate.h>
 
#include "KisAnimTimelineTimeHeader.h"
#include "KisAnimCurvesValuesHeader.h"
 
class KisAnimCurvesKeyDelegate : public QAbstractItemDelegate
{
    Q_OBJECT
 
public:
    KisAnimCurvesKeyDelegate(const KisAnimTimelineTimeHeader *horizontalRuler, const KisAnimCurvesValuesHeader *verticalRuler,  QObject *parent);
    ~KisAnimCurvesKeyDelegate() override;
 
    void paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const override;
    QSize sizeHint(const QStyleOptionViewItem &option, const QModelIndex &index) const override;
 
    QPointF nodeCenter(const QModelIndex index, bool selected) const;
    bool hasHandle(const QModelIndex index, int handle) const;
    QPointF leftHandle(const QModelIndex index, bool active) const;
    QPointF rightHandle(const QModelIndex index, bool active) const;
    void setSelectedItemVisualOffset(QPointF offset, bool axisSnap = false);
    void setHandleAdjustment(QPointF offset, int handle);
    QPointF unscaledTangent(QPointF handlePosition) const;
 
    QRect itemRect(const QModelIndex index) const;
    QRect frameRect(const QModelIndex index) const;
    QRect visualRect(const QModelIndex index) const;
 
private:
    struct Private;
    const QScopedPointer<Private> m_d;
 
    void paintHandle(QPainter *painter, QPointF nodePos, QPointF tangent) const;
    QPointF handlePosition(const QModelIndex index, bool active, int handle) const;
 
};
 
#endif