1// Copyright (C) 2016 The Qt Company Ltd.
2// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
3
4#include <QtCharts/QSplineSeries>
5#include <private/qsplineseries_p.h>
6#include <private/splinechartitem_p.h>
7#include <private/chartdataset_p.h>
8#include <private/charttheme_p.h>
9#include <private/splineanimation_p.h>
10#include <private/qchart_p.h>
11
12/*!
13 \class QSplineSeries
14 \inmodule QtCharts
15 \brief The QSplineSeries class presents data as spline charts.
16
17 A spline series stores the data points and the segment control points needed
18 by QPainterPath to draw a spline. The control points are automatically
19 calculated when the data changes. The algorithm computes the points so that
20 the normal spline can be drawn.
21
22 \image examples_splinechart.png
23
24 The following code snippet illustrates how to create a basic spline chart:
25 \code
26 QSplineSeries* series = new QSplineSeries();
27 series->append(0, 6);
28 series->append(2, 4);
29 ...
30 chart->addSeries(series);
31 \endcode
32*/
33/*!
34 \qmltype SplineSeries
35 \nativetype QSplineSeries
36 \inqmlmodule QtCharts
37
38 \inherits XYSeries
39
40 \brief Presents data as spline charts.
41
42 A spline series stores the data points and the segment control points needed
43 by QPainterPath to draw a spline. The control points are automatically
44 calculated when the data changes. The algorithm computes the points so that
45 the normal spline can be drawn.
46
47 \image examples_qmlchart3.png
48
49 The following QML code shows how to create a simple spline chart:
50 \snippet qmlchartsgallery/qml/SplineSeries.qml 1
51*/
52
53/*!
54 \qmlproperty real SplineSeries::width
55 The width of the line. By default, the width is 2.0.
56*/
57
58/*!
59 \qmlproperty Qt::PenStyle SplineSeries::style
60 Controls the style of the line. Set to one of \l{Qt::NoPen}{Qt.NoPen},
61 \l{Qt::SolidLine}{Qt.SolidLine}, \l{Qt::DashLine}{Qt.DashLine}, \l{Qt::DotLine}{Qt.DotLine},
62 \l{Qt::DashDotLine}{Qt.DashDotLine}, or \l{Qt::DashDotDotLine}{Qt.DashDotDotLine}.
63 Using \l{Qt::CustomDashLine}{Qt.CustomDashLine} is not supported in the QML API.
64 By default, the style is Qt.SolidLine.
65
66 \sa Qt::PenStyle
67*/
68
69/*!
70 \qmlproperty Qt::PenCapStyle SplineSeries::capStyle
71 Controls the cap style of the line. Set to one of \l{Qt::FlatCap}{Qt.FlatCap},
72 \l{Qt::SquareCap}{Qt.SquareCap} or \l{Qt::RoundCap}{Qt.RoundCap}. By
73 default, the cap style is Qt.SquareCap.
74
75 \sa Qt::PenCapStyle
76*/
77
78/*!
79 \qmlproperty int SplineSeries::count
80 The number of data points in the series.
81*/
82
83QT_BEGIN_NAMESPACE
84
85/*!
86 Constructs an empty series object that is a child of \a parent.
87 When the series object is added to a QChart instance, the ownerships is
88 transferred.
89 */
90
91QSplineSeries::QSplineSeries(QObject *parent)
92 : QLineSeries(*new QSplineSeriesPrivate(this), parent)
93{
94}
95
96/*!
97 Deletes the spline series.
98*/
99QSplineSeries::~QSplineSeries()
100{
101 Q_D(QSplineSeries);
102 if (d->m_chart)
103 d->m_chart->removeSeries(series: this);
104}
105
106/*!
107 \reimp
108*/
109QAbstractSeries::SeriesType QSplineSeries::type() const
110{
111 return QAbstractSeries::SeriesTypeSpline;
112}
113
114////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
115
116QSplineSeriesPrivate::QSplineSeriesPrivate(QSplineSeries *q)
117 : QLineSeriesPrivate(q)
118{
119}
120
121void QSplineSeriesPrivate::initializeGraphics(QGraphicsItem* parent)
122{
123 Q_Q(QSplineSeries);
124 SplineChartItem *spline = new SplineChartItem(q,parent);
125 m_item.reset(p: spline);
126 QAbstractSeriesPrivate::initializeGraphics(parent);
127}
128
129void QSplineSeriesPrivate::initializeTheme(int index, ChartTheme* theme, bool forced)
130{
131 Q_Q(QSplineSeries);
132 const QList<QColor> colors = theme->seriesColors();
133
134 if (forced || QChartPrivate::defaultPen() == m_pen) {
135 QPen pen;
136 pen.setColor(colors.at(i: index % colors.size()));
137 pen.setWidthF(2);
138 q->setPen(pen);
139 }
140
141 if (forced || QChartPrivate::defaultPen().color() == m_pointLabelsColor) {
142 QColor color = theme->labelBrush().color();
143 q->setPointLabelsColor(color);
144 }
145}
146
147void QSplineSeriesPrivate::initializeAnimations(QChart::AnimationOptions options,
148 int duration, QEasingCurve &curve)
149{
150 SplineChartItem *item = static_cast<SplineChartItem *>(m_item.get());
151 Q_ASSERT(item);
152 if (item->animation())
153 item->animation()->stopAndDestroyLater();
154
155 if (options.testFlag(flag: QChart::SeriesAnimations))
156 item->setAnimation(new SplineAnimation(item, duration, curve));
157 else
158 item->setAnimation(0);
159 QAbstractSeriesPrivate::initializeAnimations(options, duration, curve);
160}
161
162QT_END_NAMESPACE
163
164#include "moc_qsplineseries.cpp"
165#include "moc_qsplineseries_p.cpp"
166

source code of qtcharts/src/charts/splinechart/qsplineseries.cpp