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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Qt Charts module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:GPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 or (at your option) any later version
** approved by the KDE Free Qt Foundation. The licenses are as published by
** the Free Software Foundation and appearing in the file LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
// W A R N I N G
// -------------
//
// This file is not part of the Qt Chart API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
#ifndef SPLINECHARTITEM_P_H
#define SPLINECHARTITEM_P_H
#include <QtCharts/QSplineSeries>
#include <private/xychart_p.h>
#include <QtCharts/private/qchartglobal_p.h>
QT_CHARTS_BEGIN_NAMESPACE
class SplineAnimation;
class Q_CHARTS_PRIVATE_EXPORT SplineChartItem : public XYChart
{
Q_OBJECT
Q_INTERFACES(QGraphicsItem)
public:
SplineChartItem(QSplineSeries *series, QGraphicsItem *item = 0);
//from QGraphicsItem
QRectF boundingRect() const;
void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget);
QPainterPath shape() const;
void setControlGeometryPoints(QVector<QPointF>& points);
QVector<QPointF> controlGeometryPoints() const;
void setAnimation(SplineAnimation *animation);
ChartAnimation *animation() const;
public Q_SLOTS:
void handleUpdated();
protected:
void updateGeometry();
QVector<QPointF> calculateControlPoints(const QVector<QPointF> &points);
QVector<qreal> firstControlPoints(const QVector<qreal>& vector);
void updateChart(QVector<QPointF> &oldPoints, QVector<QPointF> &newPoints, int index);
void mousePressEvent(QGraphicsSceneMouseEvent *event);
void hoverEnterEvent(QGraphicsSceneHoverEvent *event);
void hoverLeaveEvent(QGraphicsSceneHoverEvent *event);
void mouseReleaseEvent(QGraphicsSceneMouseEvent *event);
void mouseDoubleClickEvent(QGraphicsSceneMouseEvent *event);
private:
QSplineSeries *m_series;
QPainterPath m_path;
QPainterPath m_pathPolarRight;
QPainterPath m_pathPolarLeft;
QPainterPath m_fullPath;
QRectF m_rect;
QPen m_linePen;
QPen m_pointPen;
bool m_pointsVisible;
QVector<QPointF> m_controlPoints;
QVector<QPointF> m_visiblePoints;
SplineAnimation *m_animation;
bool m_pointLabelsVisible;
QString m_pointLabelsFormat;
QFont m_pointLabelsFont;
QColor m_pointLabelsColor;
bool m_pointLabelsClipping;
QPointF m_lastMousePos;
bool m_mousePressed;
friend class SplineAnimation;
};
QT_CHARTS_END_NAMESPACE
#endif // SPLINECHARTITEM_P_H
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