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Add possibility to set reverse values to axes...
Add possibility to set reverse values to axes Added support for reverse axis. This works with line, spline, scatter and area series with cartesian chart. QBarCategoryAxis is not supported, nor different bar series. Change-Id: I60f21372ea9cee7b49918d7d99de24671bdc42c3 Reviewed-by: Miikka Heikkinen <miikka.heikkinen@theqtcompany.com>

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qlineseries.cpp
171 lines | 4.6 KiB | text/x-c | CppLexer
/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd
** All rights reserved.
** For any questions to The Qt Company, please use contact form at http://qt.io
**
** This file is part of the Qt Charts module.
**
** Licensees holding valid commercial license for Qt may use this file in
** accordance with the Qt License Agreement provided with the Software
** or, alternatively, in accordance with the terms contained in a written
** agreement between you and The Qt Company.
**
** If you have questions regarding the use of this file, please use
** contact form at http://qt.io
**
****************************************************************************/
#include <QtCharts/QLineSeries>
#include <private/qlineseries_p.h>
#include <private/linechartitem_p.h>
#include <private/chartdataset_p.h>
#include <private/charttheme_p.h>
#include <private/qchart_p.h>
QT_CHARTS_BEGIN_NAMESPACE
/*!
\class QLineSeries
\inmodule Qt Charts
\brief The QLineSeries class is used for making line charts.
\mainclass
A line chart is used to show information as a series of data points
connected by straight lines.
\image examples_linechart.png
Creating basic line chart is simple:
\code
QLineSeries* series = new QLineSeries();
series->append(0, 6);
series->append(2, 4);
...
chart->addSeries(series);
\endcode
*/
/*!
\qmltype LineSeries
\instantiates QLineSeries
\inqmlmodule QtCharts
\inherits XYSeries
\brief The LineSeries type is used for making line charts.
The following QML shows how to create a simple line chart:
\snippet qmlchart/qml/qmlchart/View2.qml 1
\beginfloatleft
\image examples_qmlchart2.png
\endfloat
\clearfloat
*/
/*!
\fn virtual SeriesType QLineSeries::type() const
\brief Returns type of series.
\sa QAbstractSeries, SeriesType
*/
/*!
\qmlproperty real LineSeries::width
The width of the line. By default the width is 2.0.
*/
/*!
\qmlproperty Qt::PenStyle LineSeries::style
Controls the style of the line. Set to one of Qt.NoPen, Qt.SolidLine, Qt.DashLine, Qt.DotLine,
Qt.DashDotLine or Qt.DashDotDotLine. Using Qt.CustomDashLine is not supported in the QML API.
By default the style is Qt.SolidLine.
*/
/*!
\qmlproperty Qt::PenCapStyle LineSeries::capStyle
Controls the cap style of the line. Set to one of Qt.FlatCap, Qt.SquareCap or Qt.RoundCap. By
default the cap style is Qt.SquareCap.
*/
/*!
Constructs empty series object which is a child of \a parent.
When series object is added to QChartView or QChart instance ownerships is transferred.
*/
QLineSeries::QLineSeries(QObject *parent)
: QXYSeries(*new QLineSeriesPrivate(this), parent)
{
}
/*!
\internal
*/
QLineSeries::QLineSeries(QLineSeriesPrivate &d, QObject *parent)
: QXYSeries(d, parent)
{
}
/*!
Destroys the object. Series added to QChartView or QChart instances are owned by those,
and are deleted when mentioned object are destroyed.
*/
QLineSeries::~QLineSeries()
{
Q_D(QLineSeries);
if (d->m_chart)
d->m_chart->removeSeries(this);
}
QAbstractSeries::SeriesType QLineSeries::type() const
{
return QAbstractSeries::SeriesTypeLine;
}
/*
QDebug operator<< (QDebug debug, const QLineSeries series)
{
Q_ASSERT(series.d_func()->m_x.size() == series.d_func()->m_y.size());
int size = series.d_func()->m_x.size();
for (int i=0; i<size; i++) {
debug.nospace() << "(" << series.d_func()->m_x.at(i) << ','<< series.d_func()->m_y.at(i) << ") ";
}
return debug.space();
}
*/
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
QLineSeriesPrivate::QLineSeriesPrivate(QLineSeries *q)
: QXYSeriesPrivate(q)
{
}
void QLineSeriesPrivate::initializeGraphics(QGraphicsItem *parent)
{
Q_Q(QLineSeries);
LineChartItem *line = new LineChartItem(q,parent);
m_item.reset(line);
QAbstractSeriesPrivate::initializeGraphics(parent);
}
void QLineSeriesPrivate::initializeTheme(int index, ChartTheme* theme, bool forced)
{
Q_Q(QLineSeries);
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);
}
}
#include "moc_qlineseries.cpp"
QT_CHARTS_END_NAMESPACE