declarativeseries.cpp
96 lines
| 2.8 KiB
| text/x-c
|
CppLexer
/ qmlplugin / declarativeseries.cpp
Tero Ahola
|
r120 | #include "declarativeseries.h" | ||
| #include "declarativechart.h" | ||||
Michal Klocek
|
r145 | #include <qlinechartseries.h> | ||
|
Tero Ahola
|
r120 | #include <cmath> | ||
| #include <QDebug> | ||||
| QTCOMMERCIALCHART_BEGIN_NAMESPACE | ||||
| DeclarativeSeries::DeclarativeSeries(QDeclarativeItem *parent) : | ||||
| QDeclarativeItem(parent), | ||||
| m_seriesType(SeriesTypeInvalid), // TODO: default type? | ||||
| m_chart(0), | ||||
| m_series(0) | ||||
| { | ||||
| setFlag(QGraphicsItem::ItemHasNoContents, false); | ||||
| connect(this, SIGNAL(parentChanged()), | ||||
| this, SLOT(setParentForSeries())); | ||||
| } | ||||
| void DeclarativeSeries::setSeriesType(SeriesType type) | ||||
| { | ||||
| if (!m_series || type != m_seriesType) { | ||||
| m_seriesType = type; | ||||
| initSeries(); | ||||
| } | ||||
| } | ||||
| void DeclarativeSeries::setParentForSeries() | ||||
| { | ||||
| initSeries(); | ||||
| } | ||||
| void DeclarativeSeries::initSeries() | ||||
| { | ||||
| DeclarativeChart *declarativeChart = qobject_cast<DeclarativeChart *>(parent()); | ||||
| if (declarativeChart && m_seriesType != SeriesTypeInvalid) { | ||||
| delete m_series; | ||||
| m_series = 0; | ||||
| QChart *chart = qobject_cast<QChart *>(declarativeChart->m_chart); | ||||
| qDebug() << "creating series for chart: " << chart; | ||||
| Q_ASSERT(chart); | ||||
| switch (m_seriesType) { | ||||
| case SeriesTypeLine: { | ||||
|
Tero Ahola
|
r158 | m_series = new QLineChartSeries(this); | ||
|
Tero Ahola
|
r120 | for (qreal i(0.0); i < 100.0; i += 1.0) | ||
|
Michal Klocek
|
r145 | ((QLineChartSeries *)m_series)->add(i, i); | ||
|
Tero Ahola
|
r120 | chart->addSeries(m_series); | ||
| break; | ||||
| } | ||||
| case SeriesTypeBar: | ||||
| // fallthrough; bar and scatter use the same test data | ||||
| case SeriesTypeScatter: { | ||||
| m_series = chart->createSeries((QChartSeries::QChartSeriesType) m_seriesType); | ||||
| QList<qreal> datax; | ||||
| QList<qreal> datay; | ||||
| for (qreal i = 0; i < 100; i += 0.1) { | ||||
| datax.append(i + (rand() % 5)); | ||||
| datay.append(abs(sin(3.14159265358979 / 50 * i) * 100) + (rand() % 5)); | ||||
| } | ||||
| Q_ASSERT(m_series->setData(datax, datay)); | ||||
| break; | ||||
| } | ||||
| case SeriesTypeStackedBar: | ||||
| break; | ||||
| case SeriesTypePercentBar: | ||||
| break; | ||||
| case SeriesTypePie: { | ||||
| m_series = chart->createSeries((QChartSeries::QChartSeriesType) m_seriesType); | ||||
| QList<qreal> data; | ||||
| data << 1.0; | ||||
| data << 12.0; | ||||
| data << 4.0; | ||||
| Q_ASSERT(m_series->setData(data)); | ||||
| break; | ||||
| } | ||||
| default: | ||||
| break; | ||||
| } | ||||
| } | ||||
| } | ||||
| QVariant DeclarativeSeries::itemChange(GraphicsItemChange change, | ||||
| const QVariant &value) | ||||
| { | ||||
| // For debugging purposes only: | ||||
| // qDebug() << QString::number(change) << " : " << value.toString(); | ||||
| return QGraphicsItem::itemChange(change, value); | ||||
| } | ||||
| #include "moc_declarativeseries.cpp" | ||||
| QTCOMMERCIALCHART_END_NAMESPACE | ||||