|
|
/****************************************************************************
|
|
|
**
|
|
|
** 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>
|
|
|
|
|
|
QT_CHARTS_BEGIN_NAMESPACE
|
|
|
|
|
|
class SplineAnimation;
|
|
|
|
|
|
class 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
|
|
|
|
