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/****************************************************************************
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**
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** Copyright (C) 2012 Digia Plc
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** All rights reserved.
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** For any questions to Digia, please use contact form at http://qt.digia.com
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**
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** This file is part of the Qt Commercial Charts Add-on.
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**
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** $QT_BEGIN_LICENSE$
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** Licensees holding valid Qt Commercial licenses may use this file in
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** accordance with the Qt Commercial License Agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and Digia.
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**
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** If you have questions regarding the use of this file, please use
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** contact form at http://qt.digia.com
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "qareaseries.h"
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#include "qareaseries_p.h"
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#include "qlineseries.h"
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#include "areachartitem_p.h"
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#include "domain_p.h"
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#include "chartdataset_p.h"
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#include "charttheme_p.h"
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#include "chartanimator_p.h"
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QTCOMMERCIALCHART_BEGIN_NAMESPACE
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/*!
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\class QAreaSeries
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\brief The QAreaSeries class is used for making area charts.
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\mainclass
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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
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is emphasized with color. Since the area chart is based on line chart, QAreaSeries constructor needs QLineSeries instance,
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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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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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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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\image areachart.png
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Creating basic area chart is simple:
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\code
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QLineSeries* lineSeries = new QLineSeries();
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series->append(0, 6);
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series->append(2, 4);
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QAreaSeries* areaSeries = new QAreaSeries(lineSeries);
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...
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chartView->addSeries(areaSeries);
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\endcode
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*/
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/*!
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\fn virtual QSeriesType QAreaSeries::type() const
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\brief Returns type of series.
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\sa QSeries, QSeriesType
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*/
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/*!
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\fn QLineSeries* QAreaSeries::upperSeries() const
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\brief Returns upperSeries used to define one of area boundaries.
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*/
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/*!
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\fn QLineSeries* QAreaSeries::lowerSeries() const
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\brief Returns lowerSeries used to define one of area boundaries. Note if QAreaSeries where counstucted wihtout a\ lowerSeries
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this function return Null pointer.
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*/
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/*!
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\fn QPen QAreaSeries::pen() const
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\brief Returns the pen used to draw line for this series.
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\sa setPen()
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*/
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/*!
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\fn QPen QAreaSeries::brush() const
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\brief Returns the brush used to draw line for this series.
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\sa setBrush()
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*/
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/*!
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\fn bool QAreaSeries::pointsVisible() const
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\brief Returns if the points are drawn for this series.
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\sa setPointsVisible()
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*/
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/*!
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\fn void QAreaSeries::clicked(const QPointF& point)
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\brief Signal is emitted when user clicks the \a point on area chart.
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*/
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/*!
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\fn void QAreaSeriesPrivate::updated()
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\brief \internal
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*/
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/*!
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Constructs area series object which is a child of \a upperSeries. Area will be spanned between \a
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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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When series object is added to QChartView or QChart instance ownerships is transfered.
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*/
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QAreaSeries::QAreaSeries(QLineSeries *upperSeries, QLineSeries *lowerSeries)
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: QSeries(*new QAreaSeriesPrivate(upperSeries,lowerSeries,this),upperSeries)
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{
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}
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/*!
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Destroys the object. Series added to QChartView or QChart instances are owned by those,
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and are deleted when mentioned object are destroyed.
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*/
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QAreaSeries::~QAreaSeries()
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{
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}
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QSeries::QSeriesType QAreaSeries::type() const
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{
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return QSeries::SeriesTypeArea;
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}
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QLineSeries* QAreaSeries::upperSeries() const
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{
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Q_D(const QAreaSeries);
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return d->m_upperSeries;
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}
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QLineSeries* QAreaSeries::lowerSeries() const
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{
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Q_D(const QAreaSeries);
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return d->m_lowerSeries;
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}
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/*!
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Sets \a pen used for drawing area outline.
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*/
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void QAreaSeries::setPen(const QPen &pen)
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{
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Q_D(QAreaSeries);
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if (d->m_pen != pen) {
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d->m_pen = pen;
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emit d->updated();
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}
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}
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QPen QAreaSeries::pen() const
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{
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Q_D(const QAreaSeries);
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return d->m_pen;
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}
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/*!
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Sets \a brush used for filling the area.
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*/
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void QAreaSeries::setBrush(const QBrush &brush)
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{
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Q_D(QAreaSeries);
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if (d->m_brush != brush) {
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d->m_brush = brush;
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emit d->updated();
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}
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}
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QBrush QAreaSeries::brush() const
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{
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Q_D(const QAreaSeries);
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return d->m_brush;
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}
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/*!
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Sets if data points are \a visible and should be drawn on line.
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*/
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void QAreaSeries::setPointsVisible(bool visible)
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{
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Q_D(QAreaSeries);
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if (d->m_pointsVisible != visible) {
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d->m_pointsVisible = visible;
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emit d->updated();
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}
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}
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bool QAreaSeries::pointsVisible() const
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{
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Q_D(const QAreaSeries);
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return d->m_pointsVisible;
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}
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bool QAreaSeries::setModel(QAbstractItemModel* model)
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{
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Q_UNUSED(model);
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qWarning()<<"Not implemented";
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return false;
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}
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QAbstractItemModel* QAreaSeries::model() const
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{
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return 0;
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}
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////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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QAreaSeriesPrivate::QAreaSeriesPrivate(QLineSeries *upperSeries, QLineSeries *lowerSeries,QAreaSeries* q):QSeriesPrivate(q),
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m_upperSeries(upperSeries),
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m_lowerSeries(lowerSeries),
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m_pointsVisible(false)
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{
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};
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void QAreaSeriesPrivate::scaleDomain(Domain& domain)
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{
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Q_Q(QAreaSeries);
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qreal minX(domain.minX());
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qreal minY(domain.minY());
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qreal maxX(domain.maxX());
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qreal maxY(domain.maxY());
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int tickXCount(domain.tickXCount());
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int tickYCount(domain.tickYCount());
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QLineSeries* upperSeries = q->upperSeries();
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QLineSeries* lowerSeries = q->lowerSeries();
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for (int i = 0; i < upperSeries->count(); i++)
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{
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qreal x = upperSeries->x(i);
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qreal y = upperSeries->y(i);
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minX = qMin(minX, x);
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minY = qMin(minY, y);
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maxX = qMax(maxX, x);
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maxY = qMax(maxY, y);
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}
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if(lowerSeries) {
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for (int i = 0; i < lowerSeries->count(); i++)
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{
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qreal x = lowerSeries->x(i);
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qreal y = lowerSeries->y(i);
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minX = qMin(minX, x);
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minY = qMin(minY, y);
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maxX = qMax(maxX, x);
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maxY = qMax(maxY, y);
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}}
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domain.setRangeX(minX,maxX,tickXCount);
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domain.setRangeY(minY,maxY,tickYCount);
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}
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Chart* QAreaSeriesPrivate::createGraphics(ChartPresenter* presenter)
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{
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Q_Q(QAreaSeries);
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AreaChartItem* area = new AreaChartItem(q,presenter);
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if(presenter->animationOptions().testFlag(QChart::SeriesAnimations)) {
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presenter->animator()->addAnimation(area->upperLineItem());
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if(q->lowerSeries()) presenter->animator()->addAnimation(area->lowerLineItem());
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}
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presenter->chartTheme()->decorate(q, presenter->dataSet()->seriesIndex(q));
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return area;
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}
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#include "moc_qareaseries.cpp"
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#include "moc_qareaseries_p.cpp"
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QTCOMMERCIALCHART_END_NAMESPACE
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