|
|
#include "qareaseries.h"
|
|
|
#include "qlineseries.h"
|
|
|
|
|
|
QTCOMMERCIALCHART_BEGIN_NAMESPACE
|
|
|
|
|
|
/*!
|
|
|
\class QAreaSeries
|
|
|
\brief The QAreaSeries class is used for making area charts.
|
|
|
|
|
|
\mainclass
|
|
|
|
|
|
An area chart is used to show quantitative data. It is based on line chart, in the way that area between axis and the line
|
|
|
is emphasized with color. Since the area chart is based on line chart, QAreaSeries constructor needs QLineSeries instance,
|
|
|
which defines "upper" boundary of the area. "Lower" boundary is defined by default by axis X. Instead of axis X "lower" boundary can be specified by other line.
|
|
|
In that case QAreaSeries should be initiated with two QLineSerie instances. Please note terms "upper" and "lower" boundary can be misleading in cases
|
|
|
where "lower" boundary had bigger values than the "upper" one, however the main point that area between these two boundary lines will be filled.
|
|
|
|
|
|
\image areachart.png
|
|
|
|
|
|
Creating basic area chart is simple:
|
|
|
\code
|
|
|
QLineSeries* lineSeries = new QLineSeries();
|
|
|
series->add(0, 6);
|
|
|
series->add(2, 4);
|
|
|
QAreaSeries* areaSeries = new QAreaSeries(lineSeries);
|
|
|
...
|
|
|
chartView->addSeries(areaSeries);
|
|
|
\endcode
|
|
|
*/
|
|
|
|
|
|
/*!
|
|
|
\fn virtual QSeriesType QAreaSeries::type() const
|
|
|
\brief Returns type of series.
|
|
|
\sa QSeries, QSeriesType
|
|
|
*/
|
|
|
|
|
|
/*!
|
|
|
\fn QLineSeries* QAreaSeries::upperSeries() const
|
|
|
\brief Returns upperSeries used to define one of area boundaries.
|
|
|
*/
|
|
|
|
|
|
/*!
|
|
|
\fn QLineSeries* QAreaSeries::lowerSeries() const
|
|
|
\brief Returns lowerSeries used to define one of area boundaries. Note if QAreaSeries where counstucted wihtout a\ lowerSeries
|
|
|
this function return Null pointer.
|
|
|
*/
|
|
|
|
|
|
/*!
|
|
|
\fn QPen QAreaSeries::pen() const
|
|
|
\brief Returns the pen used to draw line for this series.
|
|
|
\sa setPen()
|
|
|
*/
|
|
|
|
|
|
/*!
|
|
|
\fn QPen QAreaSeries::brush() const
|
|
|
\brief Returns the brush used to draw line for this series.
|
|
|
\sa setBrush()
|
|
|
*/
|
|
|
|
|
|
/*!
|
|
|
\fn bool QAreaSeries::pointsVisible() const
|
|
|
\brief Returns if the points are drawn for this series.
|
|
|
\sa setPointsVisible()
|
|
|
*/
|
|
|
|
|
|
/*!
|
|
|
\fn void QAreaSeries::updated()
|
|
|
\brief \internal
|
|
|
*/
|
|
|
|
|
|
/*!
|
|
|
Constructs area series object which is a child of \a upperSeries. Area will be spanned between \a
|
|
|
upperSeries line and \a lowerSeries line. If no \a lowerSeries is passed to constructor, area is specified by axis x (y=0) instead.
|
|
|
When series object is added to QChartView or QChart instance ownerships is transfered.
|
|
|
*/
|
|
|
QAreaSeries::QAreaSeries(QLineSeries* upperSeries,QLineSeries* lowerSeries):QSeries(upperSeries),
|
|
|
m_upperSeries(upperSeries),
|
|
|
m_lowerSeries(lowerSeries),
|
|
|
m_pointsVisible(false)
|
|
|
{
|
|
|
}
|
|
|
/*!
|
|
|
Destroys the object. Series added to QChartView or QChart instances are owned by those,
|
|
|
and are deleted when mentioned object are destroyed.
|
|
|
*/
|
|
|
QAreaSeries::~QAreaSeries()
|
|
|
{
|
|
|
}
|
|
|
|
|
|
/*!
|
|
|
Sets \a pen used for drawing area outline.
|
|
|
*/
|
|
|
void QAreaSeries::setPen(const QPen& pen)
|
|
|
{
|
|
|
m_pen=pen;
|
|
|
}
|
|
|
|
|
|
/*!
|
|
|
Sets \a brush used for filling the area.
|
|
|
*/
|
|
|
void QAreaSeries::setBrush(const QBrush& brush)
|
|
|
{
|
|
|
m_brush=brush;
|
|
|
}
|
|
|
/*!
|
|
|
Sets if data points are \a visible and should be drawn on line.
|
|
|
*/
|
|
|
void QAreaSeries::setPointsVisible(bool visible)
|
|
|
{
|
|
|
m_pointsVisible=visible;
|
|
|
}
|
|
|
|
|
|
#include "moc_qareaseries.cpp"
|
|
|
|
|
|
QTCOMMERCIALCHART_END_NAMESPACE
|
|
|
|
