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#include "qchart.h"
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#include "qchartseries.h"
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#include "qscatterseries.h"
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#include "qscatterseries_p.h"
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#include "qpieseries.h"
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#include "qxychartseries.h"
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#include "xylinechartitem_p.h"
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#include "xyplotdomain_p.h"
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#include "axis_p.h"
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#include "xygrid_p.h"
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#include <QGraphicsScene>
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#include <QDebug>
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QTCOMMERCIALCHART_BEGIN_NAMESPACE
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class QChartPrivate
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{
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public:
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QChartPrivate(QChart* parent):
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m_axisX(new Axis(parent)),
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m_axisY(new Axis(parent)),
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m_grid(new XYGrid(parent)),
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m_plotDataIndex(0),
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m_marginSize(0){}
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Axis* m_axisX;
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Axis* m_axisY;
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XYGrid* m_grid;
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QRect m_rect;
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QList<const QChartSeries*> m_series;
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QList<XYPlotDomain> m_plotDomainList;
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QList<XYLineChartItem*> m_xyLineChartItems;
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QList<QGraphicsItem*> m_items;
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int m_plotDataIndex;
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int m_marginSize;
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};
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////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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QChart::QChart(QGraphicsObject* parent) : QGraphicsObject(parent),
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d(new QChartPrivate(this))
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{
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// setFlags(QGraphicsItem::ItemClipsChildrenToShape);
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// set axis
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d->m_axisY->rotate(90);
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}
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QChart::~QChart(){}
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QRectF QChart::boundingRect() const
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{
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return d->m_rect;
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}
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void QChart::addSeries(QChartSeries* series)
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{
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// TODO: we should check the series not already added
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d->m_series<<series;
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switch(series->type())
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{
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case QChartSeries::SeriesTypeLine: {
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QXYChartSeries* xyseries = static_cast<QXYChartSeries*>(series);
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XYPlotDomain domain;
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//TODO "nice numbers algorithm"
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domain.m_ticksX=4;
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domain.m_ticksY=4;
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for (int i = 0 ; i < xyseries->count() ; i++)
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{
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qreal x = xyseries->x(i);
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qreal y = xyseries->y(i);
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domain.m_minX = qMin(domain.m_minX,x);
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domain.m_minY = qMin(domain.m_minY,y);
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domain.m_maxX = qMax(domain.m_maxX,x);
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domain.m_maxY = qMax(domain.m_maxY,y);
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}
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XYLineChartItem* item = new XYLineChartItem(xyseries,this);
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item->updateXYPlotDomain(domain);
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d->m_plotDomainList<<domain;
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d->m_xyLineChartItems<<item;
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break;
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}
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// TODO: Not tested:
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// case QChartSeries::SeriesTypeScatter: {
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// QScatterSeries *scatter = qobject_cast<QScatterSeries *>(series);
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// if (scatter) {
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// scatter->d->setParentItem(this);
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// scene()->addItem(scatter->d);
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// }
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// break;
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// }
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}
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}
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QChartSeries* QChart::createSeries(QList<qreal> x, QList<qreal> y, QChartSeries::QChartSeriesType type)
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{
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// TODO: support also other types; not only scatter and pie
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Q_ASSERT(type == QChartSeries::SeriesTypeScatter
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|| type == QChartSeries::SeriesTypePie);
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switch (type) {
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case QChartSeries::SeriesTypeScatter: {
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QScatterSeries *scatterSeries = new QScatterSeries(x, y, this);
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connect(this, SIGNAL(sizeChanged(QRectF, qreal, qreal)),
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scatterSeries, SLOT(chartSizeChanged(QRectF, qreal, qreal)));
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scatterSeries->d->setParentItem(this);
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return scatterSeries;
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}
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case QChartSeries::SeriesTypePie: {
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// TODO: we now have also a list of y values as a parameter, it is ignored
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// we should use a generic data class instead of list of x and y values
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QPieSeries *pieSeries = new QPieSeries(x, this);
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connect(this, SIGNAL(sizeChanged(QRectF, qreal, qreal)),
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pieSeries, SLOT(chartSizeChanged(QRectF, qreal, qreal)));
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return pieSeries;
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}
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default:
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break;
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}
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return 0;
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}
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void QChart::setSize(const QSizeF& size)
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{
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d->m_rect = QRect(QPoint(0,0),size.toSize());
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d->m_rect.adjust(margin(),margin(), -margin(), -margin());
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d->m_grid->setPos(d->m_rect.topLeft());
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d->m_grid->setSize(d->m_rect.size());
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// TODO: calculate the scale
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// TODO: calculate the origo
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// TODO: not sure if emitting a signal here is the best from performance point of view
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const qreal xscale = size.width() / 100;
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const qreal yscale = size.height() / 100;
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emit sizeChanged(QRectF(0, 0, size.width(), size.height()), xscale, yscale);
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for (int i(0); i < d->m_plotDomainList.size(); i++)
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d->m_plotDomainList[i].m_viewportRect = d->m_rect;
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// TODO: line chart items are updated separately as they don't support update
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// via sizeChanged signal
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foreach(XYLineChartItem* item , d->m_xyLineChartItems)
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item->updateXYPlotDomain(d->m_plotDomainList.at(d->m_plotDataIndex));
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if (d->m_plotDomainList.count())
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d->m_grid->setXYPlotData(d->m_plotDomainList.at(d->m_plotDataIndex));
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update();
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}
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int QChart::margin() const
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{
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return d->m_marginSize;
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}
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void QChart::setMargin(int margin)
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{
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d->m_marginSize = margin;
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}
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#include "moc_qchart.cpp"
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QTCOMMERCIALCHART_END_NAMESPACE
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