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Minor, check for potentical division by zero in chartbackgorund
Minor, check for potentical division by zero in chartbackgorund

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qscatterseries.cpp
261 lines | 6.8 KiB | text/x-c | CppLexer
/****************************************************************************
**
** Copyright (C) 2012 Digia Plc
** All rights reserved.
** For any questions to Digia, please use contact form at http://qt.digia.com
**
** This file is part of the Qt Commercial Charts Add-on.
**
** $QT_BEGIN_LICENSE$
** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia.
**
** If you have questions regarding the use of this file, please use
** contact form at http://qt.digia.com
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qscatterseries.h"
#include "qscatterseries_p.h"
#include "scatterchartitem_p.h"
#include "chartdataset_p.h"
#include "charttheme_p.h"
/*!
\class QScatterSeries
\brief The QScatterSeries class is used for making scatter charts.
\mainclass
The scatter data is displayed as a collection of points on the chart. Each point determines the position on the horizontal axis
and the vertical axis.
\image examples_scatterchart.png
Creating basic scatter chart is simple:
\code
QScatterSeries* series = new QScatterSeries();
series->append(0, 6);
series->append(2, 4);
...
chart->addSeries(series);
\endcode
*/
/*!
\qmlclass ScatterSeries QScatterSeries
\inherits XYSeries
The following QML shows how to create a chart with two simple scatter series:
\snippet ../demos/qmlchart/qml/qmlchart/View5.qml 1
\beginfloatleft
\image demos_qmlchart5.png
\endfloat
\clearfloat
*/
/*!
\enum QScatterSeries::MarkerShape
This enum describes the shape used when rendering marker items.
\value MarkerShapeCircle
\value MarkerShapeRectangle
*/
/*!
\property QScatterSeries::color
Fill (brush) color of the series. This is a convenience property for modifying the color of brush.
\sa QScatterSeries::brush()
*/
/*!
\property QScatterSeries::borderColor
Line (pen) color of the series. This is a convenience property for modifying the color of pen.
\sa QScatterSeries::pen()
*/
/*!
\property QScatterSeries::markerShape
Defines the shape of the marker used to draw the points in the series. The default shape is MarkerShapeCircle.
*/
/*!
\qmlproperty MarkerShape ScatterSeries::markerShape
Defines the shape of the marker used to draw the points in the series. One of ScatterSeries
ScatterSeries.MarkerShapeCircle or ScatterSeries.MarkerShapeRectangle.
The default shape is ScatterSeries.MarkerShapeCircle.
*/
/*!
\property QScatterSeries::markerSize
Defines the size of the marker used to draw the points in the series. The default size is 15.0.
*/
/*!
\qmlproperty real ScatterSeries::markerSize
Defines the size of the marker used to draw the points in the series. The default size is 15.0.
*/
/*!
\fn void QScatterSeries::colorChanged(QColor color)
Signal is emitted when the fill (brush) color has changed to \a color.
*/
/*!
\fn void QScatterSeries::borderColorChanged(QColor color)
Signal is emitted when the line (pen) color has changed to \a color.
*/
/*!
\qmlsignal ScatterSeries::borderColorChanged(color color)
Signal is emitted when the line (pen) color has changed to \a color.
*/
/*!
\fn QChartSeriesType QScatterSeries::type() const
Returns QChartSeries::SeriesTypeScatter.
\sa QAbstractSeries, SeriesType
*/
QTCOMMERCIALCHART_BEGIN_NAMESPACE
/*!
Constructs a series object which is a child of \a parent.
*/
QScatterSeries::QScatterSeries(QObject *parent) : QXYSeries(*new QScatterSeriesPrivate(this),parent)
{
}
/*!
Destroys the object. Note that adding series to QChart transfers the ownership to the chart.
*/
QScatterSeries::~QScatterSeries()
{
Q_D(QScatterSeries);
if(d->m_dataset) {
d->m_dataset->removeSeries(this);
}
}
QAbstractSeries::SeriesType QScatterSeries::type() const
{
return QAbstractSeries::SeriesTypeScatter;
}
/*!
Sets \a pen used for drawing points' border on the chart. If the pen is not defined, the
pen from chart theme is used.
\sa QChart::setTheme()
*/
void QScatterSeries::setPen(const QPen &pen)
{
Q_D(QXYSeries);
if (d->m_pen != pen) {
bool emitColorChanged = d->m_pen.color() != pen.color();
d->m_pen = pen;
emit d->updated();
if (emitColorChanged)
emit borderColorChanged(pen.color());
}
}
/*!
Sets \a brush used for drawing points on the chart. If the brush is not defined, brush
from chart theme setting is used.
\sa QChart::setTheme()
*/
void QScatterSeries::setBrush(const QBrush &brush)
{
Q_D(QScatterSeries);
if (d->m_brush != brush) {
bool emitColorChanged = d->m_brush.color() != brush.color();
d->m_brush = brush;
emit d->updated();
if (emitColorChanged)
emit colorChanged(brush.color());
}
}
void QScatterSeries::setColor(const QColor &color)
{
QBrush b = brush();
if (b.color() != color) {
b.setColor(color);
setBrush(b);
}
}
QColor QScatterSeries::color() const
{
return brush().color();
}
void QScatterSeries::setBorderColor(const QColor &color)
{
QPen p = pen();
if (p.color() != color) {
p.setColor(color);
setPen(p);
}
}
QColor QScatterSeries::borderColor() const
{
return pen().color();
}
QScatterSeries::MarkerShape QScatterSeries::markerShape() const
{
Q_D(const QScatterSeries);
return d->m_shape;
}
void QScatterSeries::setMarkerShape(MarkerShape shape)
{
Q_D(QScatterSeries);
if (d->m_shape != shape) {
d->m_shape = shape;
emit d->updated();
}
}
qreal QScatterSeries::markerSize() const
{
Q_D(const QScatterSeries);
return d->m_size;
}
void QScatterSeries::setMarkerSize(qreal size)
{
Q_D(QScatterSeries);
if (!qFuzzyIsNull(d->m_size - size)) {
d->m_size = size;
emit d->updated();
}
}
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
QScatterSeriesPrivate::QScatterSeriesPrivate(QScatterSeries* q) :
QXYSeriesPrivate(q),
m_shape(QScatterSeries::MarkerShapeCircle),
m_size(15.0)
{
}
ChartElement* QScatterSeriesPrivate::createGraphics(ChartPresenter* presenter)
{
Q_Q(QScatterSeries);
ScatterChartItem *scatter = new ScatterChartItem(q,presenter);
if(presenter->animationOptions().testFlag(QChart::SeriesAnimations)) {
scatter->setAnimation(new XYAnimation(scatter));
}
presenter->chartTheme()->decorate(q, presenter->dataSet()->seriesIndex(q));
return scatter;
}
#include "moc_qscatterseries.cpp"
QTCOMMERCIALCHART_END_NAMESPACE