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qareaseries.cpp
281 lines | 7.8 KiB | text/x-c | CppLexer
Jani Honkonen
Add license headers
r794 /****************************************************************************
**
** 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
** $QT_END_LICENSE$
**
****************************************************************************/
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r421 #include "qareaseries.h"
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r938 #include "qareaseries_p.h"
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r421 #include "qlineseries.h"
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r943 #include "areachartitem_p.h"
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r950 #include "legendmarker_p.h"
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r943 #include "domain_p.h"
#include "chartdataset_p.h"
#include "charttheme_p.h"
#include "chartanimator_p.h"
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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,
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typos in docs
r424 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.
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r421 In that case QAreaSeries should be initiated with two QLineSerie instances. Please note terms "upper" and "lower" boundary can be misleading in cases
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typos in docs
r424 where "lower" boundary had bigger values than the "upper" one, however the main point that area between these two boundary lines will be filled.
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r421
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r995 See the \l {AreaChart Example} {area chart example} to learn how to create a simple area chart.
\image examples_areachart.png
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r421 */
/*!
\fn virtual QSeriesType QAreaSeries::type() const
\brief Returns type of series.
Tero Ahola
Renamed QSeries to QAbstractSeries
r988 \sa QAbstractSeries, QSeriesType
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r421 */
/*!
\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()
*/
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r574 /*!
\fn void QAreaSeries::clicked(const QPointF& point)
\brief Signal is emitted when user clicks the \a point on area chart.
*/
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r973 /*!
\fn void QAreaSeries::selected()
The signal is emitted if the user selects/deselects the XY series. The logic for maintaining selections should be
implemented by the user of QAreaSeries API.
*/
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r421 /*!
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r940 \fn void QAreaSeriesPrivate::updated()
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r421 \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.
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Krazy reported errors...
r974 When series object is added to QChartView or QChart instance ownerships is transferred.
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r421 */
Tero Ahola
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r761 QAreaSeries::QAreaSeries(QLineSeries *upperSeries, QLineSeries *lowerSeries)
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r988 : QAbstractSeries(*new QAreaSeriesPrivate(upperSeries,lowerSeries,this),upperSeries)
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r421 {
}
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r761
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r421 /*!
Destroys the object. Series added to QChartView or QChart instances are owned by those,
and are deleted when mentioned object are destroyed.
*/
QAreaSeries::~QAreaSeries()
{
}
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r938
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r988 QAbstractSeries::QSeriesType QAreaSeries::type() const
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r938 {
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r988 return QAbstractSeries::SeriesTypeArea;
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r938 }
QLineSeries* QAreaSeries::upperSeries() const
{
Q_D(const QAreaSeries);
return d->m_upperSeries;
}
QLineSeries* QAreaSeries::lowerSeries() const
{
Q_D(const QAreaSeries);
return d->m_lowerSeries;
}
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r421 /*!
Sets \a pen used for drawing area outline.
*/
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r761 void QAreaSeries::setPen(const QPen &pen)
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r421 {
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r938 Q_D(QAreaSeries);
if (d->m_pen != pen) {
d->m_pen = pen;
emit d->updated();
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r571 }
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r421 }
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r938 QPen QAreaSeries::pen() const
{
Q_D(const QAreaSeries);
return d->m_pen;
}
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r421 /*!
Sets \a brush used for filling the area.
*/
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minor code review issues. indent, spaces, brackets etc.
r743 void QAreaSeries::setBrush(const QBrush &brush)
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r421 {
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r938 Q_D(QAreaSeries);
if (d->m_brush != brush) {
d->m_brush = brush;
emit d->updated();
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r571 }
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r421 }
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QBrush QAreaSeries::brush() const
{
Q_D(const QAreaSeries);
return d->m_brush;
}
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r421 /*!
Sets if data points are \a visible and should be drawn on line.
*/
void QAreaSeries::setPointsVisible(bool visible)
{
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r938 Q_D(QAreaSeries);
if (d->m_pointsVisible != visible) {
d->m_pointsVisible = visible;
emit d->updated();
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r571 }
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r421 }
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r938 bool QAreaSeries::pointsVisible() const
{
Q_D(const QAreaSeries);
return d->m_pointsVisible;
}
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Couple docs fixes
r991 /*!
Does nothing at present. Paremeter \a model is not used. Always returns false.
To set the model for area series set the models for upperSeries, lowerSeries
*/
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r938 bool QAreaSeries::setModel(QAbstractItemModel* model)
{
Q_UNUSED(model);
qWarning()<<"Not implemented";
return false;
}
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r991 /*!
Does nothing at present. Always returns 0;
To get the model set for area series call upperSeries->model(), lowerSeries->model()
*/
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r938 QAbstractItemModel* QAreaSeries::model() const
{
return 0;
}
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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r973 QAreaSeriesPrivate::QAreaSeriesPrivate(QLineSeries *upperSeries, QLineSeries *lowerSeries,QAreaSeries* q) :
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r988 QAbstractSeriesPrivate(q),
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r973 m_upperSeries(upperSeries),
m_lowerSeries(lowerSeries),
m_pointsVisible(false)
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r938 {
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r973 }
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r938
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r943 void QAreaSeriesPrivate::scaleDomain(Domain& domain)
{
Q_Q(QAreaSeries);
qreal minX(domain.minX());
qreal minY(domain.minY());
qreal maxX(domain.maxX());
qreal maxY(domain.maxY());
int tickXCount(domain.tickXCount());
int tickYCount(domain.tickYCount());
QLineSeries* upperSeries = q->upperSeries();
QLineSeries* lowerSeries = q->lowerSeries();
for (int i = 0; i < upperSeries->count(); i++)
{
qreal x = upperSeries->x(i);
qreal y = upperSeries->y(i);
minX = qMin(minX, x);
minY = qMin(minY, y);
maxX = qMax(maxX, x);
maxY = qMax(maxY, y);
}
if(lowerSeries) {
for (int i = 0; i < lowerSeries->count(); i++)
{
qreal x = lowerSeries->x(i);
qreal y = lowerSeries->y(i);
minX = qMin(minX, x);
minY = qMin(minY, y);
maxX = qMax(maxX, x);
maxY = qMax(maxY, y);
}}
domain.setRangeX(minX,maxX,tickXCount);
domain.setRangeY(minY,maxY,tickYCount);
}
Chart* QAreaSeriesPrivate::createGraphics(ChartPresenter* presenter)
{
Q_Q(QAreaSeries);
AreaChartItem* area = new AreaChartItem(q,presenter);
if(presenter->animationOptions().testFlag(QChart::SeriesAnimations)) {
presenter->animator()->addAnimation(area->upperLineItem());
if(q->lowerSeries()) presenter->animator()->addAnimation(area->lowerLineItem());
}
presenter->chartTheme()->decorate(q, presenter->dataSet()->seriesIndex(q));
return area;
}
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r950 QList<LegendMarker*> QAreaSeriesPrivate::createLegendMarker(QLegend* legend)
{
Q_Q(QAreaSeries);
QList<LegendMarker*> list;
return list << new AreaLegendMarker(q,legend);
}
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r421 #include "moc_qareaseries.cpp"
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r938 #include "moc_qareaseries_p.cpp"
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r421
QTCOMMERCIALCHART_END_NAMESPACE