1 | /**************************************************************************** |
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2 | ** |
3 | ** Copyright (C) 2016 The Qt Company Ltd. |
4 | ** Contact: https://www.qt.io/licensing/ |
5 | ** |
6 | ** This file is part of the Qt Charts module of the Qt Toolkit. |
7 | ** |
8 | ** $QT_BEGIN_LICENSE:GPL$ |
9 | ** Commercial License Usage |
10 | ** Licensees holding valid commercial Qt licenses may use this file in |
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15 | ** information use the contact form at https://www.qt.io/contact-us. |
16 | ** |
17 | ** GNU General Public License Usage |
18 | ** Alternatively, this file may be used under the terms of the GNU |
19 | ** General Public License version 3 or (at your option) any later version |
20 | ** approved by the KDE Free Qt Foundation. The licenses are as published by |
21 | ** the Free Software Foundation and appearing in the file LICENSE.GPL3 |
22 | ** included in the packaging of this file. Please review the following |
23 | ** information to ensure the GNU General Public License requirements will |
24 | ** be met: https://www.gnu.org/licenses/gpl-3.0.html. |
25 | ** |
26 | ** $QT_END_LICENSE$ |
27 | ** |
28 | ****************************************************************************/ |
29 | |
30 | // W A R N I N G |
31 | // ------------- |
32 | // |
33 | // This file is not part of the Qt Chart API. It exists purely as an |
34 | // implementation detail. This header file may change from version to |
35 | // version without notice, or even be removed. |
36 | // |
37 | // We mean it. |
38 | |
39 | #ifndef SPLINECHARTITEM_P_H |
40 | #define SPLINECHARTITEM_P_H |
41 | |
42 | #include <QtCharts/QSplineSeries> |
43 | #include <private/xychart_p.h> |
44 | #include <QtCharts/private/qchartglobal_p.h> |
45 | |
46 | QT_CHARTS_BEGIN_NAMESPACE |
47 | |
48 | class SplineAnimation; |
49 | |
50 | class Q_CHARTS_PRIVATE_EXPORT SplineChartItem : public XYChart |
51 | { |
52 | Q_OBJECT |
53 | Q_INTERFACES(QGraphicsItem) |
54 | public: |
55 | SplineChartItem(QSplineSeries *series, QGraphicsItem *item = 0); |
56 | |
57 | //from QGraphicsItem |
58 | QRectF boundingRect() const; |
59 | void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget); |
60 | QPainterPath shape() const; |
61 | |
62 | void setControlGeometryPoints(QVector<QPointF>& points); |
63 | QVector<QPointF> controlGeometryPoints() const; |
64 | |
65 | void setAnimation(SplineAnimation *animation); |
66 | ChartAnimation *animation() const; |
67 | |
68 | public Q_SLOTS: |
69 | void handleUpdated(); |
70 | |
71 | protected: |
72 | void updateGeometry(); |
73 | QVector<QPointF> calculateControlPoints(const QVector<QPointF> &points); |
74 | QVector<qreal> firstControlPoints(const QVector<qreal>& vector); |
75 | void updateChart(QVector<QPointF> &oldPoints, QVector<QPointF> &newPoints, int index); |
76 | void mousePressEvent(QGraphicsSceneMouseEvent *event); |
77 | void hoverEnterEvent(QGraphicsSceneHoverEvent *event); |
78 | void hoverLeaveEvent(QGraphicsSceneHoverEvent *event); |
79 | void mouseReleaseEvent(QGraphicsSceneMouseEvent *event); |
80 | void mouseDoubleClickEvent(QGraphicsSceneMouseEvent *event); |
81 | |
82 | private: |
83 | QSplineSeries *m_series; |
84 | QPainterPath m_path; |
85 | QPainterPath m_pathPolarRight; |
86 | QPainterPath m_pathPolarLeft; |
87 | QPainterPath m_fullPath; |
88 | QRectF m_rect; |
89 | QPen m_linePen; |
90 | QPen m_pointPen; |
91 | bool m_pointsVisible; |
92 | QVector<QPointF> m_controlPoints; |
93 | QVector<QPointF> m_visiblePoints; |
94 | SplineAnimation *m_animation; |
95 | |
96 | bool m_pointLabelsVisible; |
97 | QString m_pointLabelsFormat; |
98 | QFont m_pointLabelsFont; |
99 | QColor m_pointLabelsColor; |
100 | bool m_pointLabelsClipping; |
101 | |
102 | QPointF m_lastMousePos; |
103 | bool m_mousePressed; |
104 | |
105 | friend class SplineAnimation; |
106 | }; |
107 | |
108 | QT_CHARTS_END_NAMESPACE |
109 | |
110 | #endif // SPLINECHARTITEM_P_H |
111 |