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#include "declarativeseries.h"
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#include "declarativechart.h"
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#include <qscatterseries.h>
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#include <qlinechartseries.h>
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#include <cmath>
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#include <QDebug>
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QTCOMMERCIALCHART_BEGIN_NAMESPACE
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DeclarativeSeries::DeclarativeSeries(QDeclarativeItem *parent) :
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QDeclarativeItem(parent),
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m_seriesType(SeriesTypeInvalid), // TODO: default type?
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m_chart(0),
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m_series(0)
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{
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setFlag(QGraphicsItem::ItemHasNoContents, false);
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connect(this, SIGNAL(parentChanged()),
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this, SLOT(setParentForSeries()));
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}
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void DeclarativeSeries::setSeriesType(SeriesType type)
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{
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if (!m_series || type != m_seriesType) {
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m_seriesType = type;
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initSeries();
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} else {
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m_seriesType = type;
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}
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}
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void DeclarativeSeries::setParentForSeries()
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{
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if (!m_series)
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initSeries();
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else if (m_series->type() != m_seriesType)
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initSeries();
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}
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void DeclarativeSeries::initSeries()
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{
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DeclarativeChart *declarativeChart = qobject_cast<DeclarativeChart *>(parent());
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if (declarativeChart && m_seriesType != SeriesTypeInvalid) {
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delete m_series;
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m_series = 0;
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QChart *chart = qobject_cast<QChart *>(declarativeChart->m_chart);
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qDebug() << "creating series for chart: " << chart;
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Q_ASSERT(chart);
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switch (m_seriesType) {
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case SeriesTypeLine: {
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m_series = new QLineChartSeries(this);
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for (qreal i(0.0); i < 100.0; i += 1.0)
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((QLineChartSeries *)m_series)->add(i, i);
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chart->addSeries(m_series);
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break;
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}
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case SeriesTypeBar:
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// fallthrough; bar and scatter use the same test data
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case SeriesTypeScatter: {
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m_series = chart->createSeries((QChartSeries::QChartSeriesType) m_seriesType);
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QScatterSeries *scatter = qobject_cast<QScatterSeries *>(m_series);
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Q_ASSERT(scatter);
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for (qreal i = 0; i < 100; i += 0.1)
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scatter->addData(QPointF(i + (rand() % 5),
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abs(sin(3.14159265358979 / 50 * i) * 100) + (rand() % 5)));
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break;
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}
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case SeriesTypeStackedBar:
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break;
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case SeriesTypePercentBar:
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break;
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case SeriesTypePie: {
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m_series = chart->createSeries((QChartSeries::QChartSeriesType) m_seriesType);
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QList<qreal> data;
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data << 1.0;
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data << 12.0;
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data << 4.0;
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Q_ASSERT(m_series->setData(data));
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break;
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}
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default:
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break;
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}
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}
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}
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QVariant DeclarativeSeries::itemChange(GraphicsItemChange change,
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const QVariant &value)
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{
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// For debugging purposes only:
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// qDebug() << QString::number(change) << " : " << value.toString();
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return QGraphicsItem::itemChange(change, value);
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}
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#include "moc_declarativeseries.cpp"
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QTCOMMERCIALCHART_END_NAMESPACE
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