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/****************************************************************************
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**
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** Copyright (C) 2013 Digia Plc
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** All rights reserved.
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** For any questions to Digia, please use contact form at http://qt.digia.com
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**
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** This file is part of the Qt Enterprise Charts Add-on.
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**
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** $QT_BEGIN_LICENSE$
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** Licensees holding valid Qt Enterprise licenses may use this file in
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** accordance with the Qt Enterprise License Agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and Digia.
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**
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** If you have questions regarding the use of this file, please use
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** contact form at http://qt.digia.com
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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// W A R N I N G
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// -------------
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//
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// This file is not part of the Qt Enterprise Chart API. It exists purely as an
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// implementation detail. This header file may change from version to
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// version without notice, or even be removed.
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//
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// We mean it.
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#ifndef SPLINECHARTITEM_P_H
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#define SPLINECHARTITEM_P_H
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#include "qsplineseries.h"
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#include "xychart_p.h"
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QTCOMMERCIALCHART_BEGIN_NAMESPACE
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class SplineAnimation;
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class SplineChartItem : public XYChart
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{
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Q_OBJECT
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Q_INTERFACES(QGraphicsItem)
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public:
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SplineChartItem(QSplineSeries *series, QGraphicsItem *item = 0);
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//from QGraphicsItem
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QRectF boundingRect() const;
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void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget);
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QPainterPath shape() const;
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void setControlGeometryPoints(QVector<QPointF>& points);
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QVector<QPointF> controlGeometryPoints() const;
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void setAnimation(SplineAnimation *animation);
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ChartAnimation *animation() const;
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public Q_SLOTS:
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void handleUpdated();
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protected:
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void updateGeometry();
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QVector<QPointF> calculateControlPoints(const QVector<QPointF> &points);
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QVector<qreal> firstControlPoints(const QVector<qreal>& vector);
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void updateChart(QVector<QPointF> &oldPoints, QVector<QPointF> &newPoints, int index);
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void mousePressEvent(QGraphicsSceneMouseEvent *event);
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void hoverEnterEvent(QGraphicsSceneHoverEvent *event);
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void hoverLeaveEvent(QGraphicsSceneHoverEvent *event);
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private:
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QSplineSeries *m_series;
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QPainterPath m_path;
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QPainterPath m_pathPolarRight;
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QPainterPath m_pathPolarLeft;
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QPainterPath m_fullPath;
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QRectF m_rect;
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QPen m_linePen;
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QPen m_pointPen;
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bool m_pointsVisible;
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QVector<QPointF> m_controlPoints;
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QVector<QPointF> m_visiblePoints;
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SplineAnimation *m_animation;
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friend class SplineAnimation;
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};
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QTCOMMERCIALCHART_END_NAMESPACE
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#endif // SPLINECHARTITEM_P_H
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