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| ** Copyright (C) 2016 The Qt Company Ltd. |
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| ** This file is part of the Qt Charts module of the Qt Toolkit. |
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| |
| #include <QtCharts/QSplineSeries> |
| #include <private/qsplineseries_p.h> |
| #include <private/splinechartitem_p.h> |
| #include <private/chartdataset_p.h> |
| #include <private/charttheme_p.h> |
| #include <private/splineanimation_p.h> |
| #include <private/qchart_p.h> |
| |
| /*! |
| \class QSplineSeries |
| \inmodule QtCharts |
| \brief The QSplineSeries class presents data as spline charts. |
| |
| A spline series stores the data points and the segment control points needed |
| by QPainterPath to draw a spline. The control points are automatically |
| calculated when the data changes. The algorithm computes the points so that |
| the normal spline can be drawn. |
| |
| \image examples_splinechart.png |
| |
| The following code snippet illustrates how to create a basic spline chart: |
| \code |
| QSplineSeries* series = new QSplineSeries(); |
| series->append(0, 6); |
| series->append(2, 4); |
| ... |
| chart->addSeries(series); |
| \endcode |
| */ |
| /*! |
| \qmltype SplineSeries |
| \instantiates QSplineSeries |
| \inqmlmodule QtCharts |
| |
| \inherits XYSeries |
| |
| \brief Presents data as spline charts. |
| |
| A spline series stores the data points and the segment control points needed |
| by QPainterPath to draw a spline. The control points are automatically |
| calculated when the data changes. The algorithm computes the points so that |
| the normal spline can be drawn. |
| |
| \image examples_qmlchart3.png |
| |
| The following QML code shows how to create a simple spline chart: |
| \snippet qmlchart/qml/qmlchart/View3.qml 1 |
| */ |
| |
| /*! |
| \qmlproperty real SplineSeries::width |
| The width of the line. By default, the width is 2.0. |
| */ |
| |
| /*! |
| \qmlproperty Qt::PenStyle SplineSeries::style |
| Controls the style of the line. Set to one of \l{Qt::NoPen}{Qt.NoPen}, |
| \l{Qt::SolidLine}{Qt.SolidLine}, \l{Qt::DashLine}{Qt.DashLine}, \l{Qt::DotLine}{Qt.DotLine}, |
| \l{Qt::DashDotLine}{Qt.DashDotLine}, or \l{Qt::DashDotDotLine}{Qt.DashDotDotLine}. |
| Using \l{Qt::CustomDashLine}{Qt.CustomDashLine} is not supported in the QML API. |
| By default, the style is Qt.SolidLine. |
| |
| \sa Qt::PenStyle |
| */ |
| |
| /*! |
| \qmlproperty Qt::PenCapStyle SplineSeries::capStyle |
| Controls the cap style of the line. Set to one of \l{Qt::FlatCap}{Qt.FlatCap}, |
| \l{Qt::SquareCap}{Qt.SquareCap} or \l{Qt::RoundCap}{Qt.RoundCap}. By |
| default, the cap style is Qt.SquareCap. |
| |
| \sa Qt::PenCapStyle |
| */ |
| |
| /*! |
| \qmlproperty int SplineSeries::count |
| The number of data points in the series. |
| */ |
| |
| QT_CHARTS_BEGIN_NAMESPACE |
| |
| /*! |
| Constructs an empty series object that is a child of \a parent. |
| When the series object is added to a QChart instance, the ownerships is |
| transferred. |
| */ |
| |
| QSplineSeries::QSplineSeries(QObject *parent) |
| : QLineSeries(*new QSplineSeriesPrivate(this), parent) |
| { |
| } |
| |
| /*! |
| Deletes the spline series. |
| */ |
| QSplineSeries::~QSplineSeries() |
| { |
| Q_D(QSplineSeries); |
| if (d->m_chart) |
| d->m_chart->removeSeries(this); |
| } |
| |
| /*! |
| \reimp |
| */ |
| QAbstractSeries::SeriesType QSplineSeries::type() const |
| { |
| return QAbstractSeries::SeriesTypeSpline; |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// |
| |
| QSplineSeriesPrivate::QSplineSeriesPrivate(QSplineSeries *q) |
| : QLineSeriesPrivate(q) |
| { |
| } |
| |
| void QSplineSeriesPrivate::initializeGraphics(QGraphicsItem* parent) |
| { |
| Q_Q(QSplineSeries); |
| SplineChartItem *spline = new SplineChartItem(q,parent); |
| m_item.reset(spline); |
| QAbstractSeriesPrivate::initializeGraphics(parent); |
| } |
| |
| void QSplineSeriesPrivate::initializeTheme(int index, ChartTheme* theme, bool forced) |
| { |
| Q_Q(QSplineSeries); |
| const QList<QColor> colors = theme->seriesColors(); |
| |
| if (forced || QChartPrivate::defaultPen() == m_pen) { |
| QPen pen; |
| pen.setColor(colors.at(index % colors.size())); |
| pen.setWidthF(2); |
| q->setPen(pen); |
| } |
| |
| if (forced || QChartPrivate::defaultPen().color() == m_pointLabelsColor) { |
| QColor color = theme->labelBrush().color(); |
| q->setPointLabelsColor(color); |
| } |
| } |
| |
| void QSplineSeriesPrivate::initializeAnimations(QtCharts::QChart::AnimationOptions options, |
| int duration, QEasingCurve &curve) |
| { |
| SplineChartItem *item = static_cast<SplineChartItem *>(m_item.data()); |
| Q_ASSERT(item); |
| if (item->animation()) |
| item->animation()->stopAndDestroyLater(); |
| |
| if (options.testFlag(QChart::SeriesAnimations)) |
| item->setAnimation(new SplineAnimation(item, duration, curve)); |
| else |
| item->setAnimation(0); |
| QAbstractSeriesPrivate::initializeAnimations(options, duration, curve); |
| } |
| |
| QT_CHARTS_END_NAMESPACE |
| |
| #include "moc_qsplineseries.cpp" |
| #include "moc_qsplineseries_p.cpp" |