|
|
#include "qchart.h"
|
|
|
#include "qchartaxis.h"
|
|
|
#include "chartpresenter_p.h"
|
|
|
#include "chartdataset_p.h"
|
|
|
#include <QGraphicsScene>
|
|
|
#include <QGraphicsSceneResizeEvent>
|
|
|
#include <QDebug>
|
|
|
|
|
|
/*!
|
|
|
\class QChart
|
|
|
\brief QtCommercial chart API.
|
|
|
|
|
|
QChart is a QGraphicsWidget that you can show in a QGraphicsScene. It manages the graphical
|
|
|
representation of different types of QChartSeries and other chart related objects like
|
|
|
QChartAxis and QChartLegend. If you simply want to show a chart in a layout, you can use the
|
|
|
convenience class QChartView instead of QChart.
|
|
|
*/
|
|
|
|
|
|
QTCOMMERCIALCHART_BEGIN_NAMESPACE
|
|
|
|
|
|
/*!
|
|
|
Constructs a chart object which is a child of parent.
|
|
|
*/
|
|
|
QChart::QChart(QGraphicsItem *parent, Qt::WindowFlags wFlags) : QGraphicsWidget(parent,wFlags),
|
|
|
m_backgroundItem(0),
|
|
|
m_titleItem(0),
|
|
|
m_dataset(new ChartDataSet(this)),
|
|
|
m_presenter(new ChartPresenter(this,m_dataset))
|
|
|
{
|
|
|
}
|
|
|
|
|
|
/*!
|
|
|
Destroys the object and it's children, like QChartSeries and QChartAxis object added to it.
|
|
|
*/
|
|
|
QChart::~QChart()
|
|
|
{
|
|
|
}
|
|
|
|
|
|
/*!
|
|
|
Adds the series and optional y axis onto the chart and takes the ownership of the objects.
|
|
|
If auto scaling is enabled, re-scales the axes the series is bound to (both the x axis and
|
|
|
the y axis).
|
|
|
*/
|
|
|
void QChart::addSeries(QChartSeries* series, QChartAxis* axisY)
|
|
|
{
|
|
|
m_dataset->addSeries(series, axisY);
|
|
|
}
|
|
|
|
|
|
void QChart::removeSeries(QChartSeries* series)
|
|
|
{
|
|
|
m_dataset->removeSeries(series);
|
|
|
}
|
|
|
|
|
|
void QChart::removeAllSeries()
|
|
|
{
|
|
|
m_dataset->removeAllSeries();
|
|
|
}
|
|
|
|
|
|
void QChart::setChartBackgroundBrush(const QBrush& brush)
|
|
|
{
|
|
|
createChartBackgroundItem();
|
|
|
m_backgroundItem->setBrush(brush);
|
|
|
m_backgroundItem->update();
|
|
|
}
|
|
|
|
|
|
void QChart::setChartBackgroundPen(const QPen& pen)
|
|
|
{
|
|
|
createChartBackgroundItem();
|
|
|
m_backgroundItem->setPen(pen);
|
|
|
m_backgroundItem->update();
|
|
|
}
|
|
|
|
|
|
void QChart::setChartTitle(const QString& title)
|
|
|
{
|
|
|
createChartTitleItem();
|
|
|
m_titleItem->setPlainText(title);
|
|
|
}
|
|
|
|
|
|
void QChart::setChartTitleFont(const QFont& font)
|
|
|
{
|
|
|
createChartTitleItem();
|
|
|
m_titleItem->setFont(font);
|
|
|
}
|
|
|
|
|
|
void QChart::createChartBackgroundItem()
|
|
|
{
|
|
|
if(!m_backgroundItem) {
|
|
|
m_backgroundItem = new QGraphicsRectItem(this);
|
|
|
m_backgroundItem->setPen(Qt::NoPen);
|
|
|
m_backgroundItem->setZValue(ChartPresenter::BackgroundZValue);
|
|
|
}
|
|
|
}
|
|
|
|
|
|
void QChart::createChartTitleItem()
|
|
|
{
|
|
|
if(!m_titleItem) {
|
|
|
m_titleItem = new QGraphicsTextItem(this);
|
|
|
m_titleItem->setZValue(ChartPresenter::BackgroundZValue);
|
|
|
}
|
|
|
}
|
|
|
|
|
|
int QChart::margin() const
|
|
|
{
|
|
|
return m_presenter->margin();
|
|
|
}
|
|
|
|
|
|
void QChart::setMargin(int margin)
|
|
|
{
|
|
|
m_presenter->setMargin(margin);
|
|
|
}
|
|
|
|
|
|
void QChart::setChartTheme(QChart::ChartTheme theme)
|
|
|
{
|
|
|
m_presenter->setChartTheme(theme);
|
|
|
}
|
|
|
|
|
|
QChart::ChartTheme QChart::chartTheme() const
|
|
|
{
|
|
|
return m_presenter->chartTheme();
|
|
|
}
|
|
|
|
|
|
void QChart::zoomIn()
|
|
|
{
|
|
|
if (!m_dataset->nextDomain()) {
|
|
|
QRectF rect = m_presenter->geometry();
|
|
|
rect.setWidth(rect.width()/2);
|
|
|
rect.setHeight(rect.height()/2);
|
|
|
rect.moveCenter(m_presenter->geometry().center());
|
|
|
zoomIn(rect);
|
|
|
}
|
|
|
}
|
|
|
|
|
|
void QChart::zoomIn(const QRectF& rect)
|
|
|
{
|
|
|
if(!rect.isValid()) return;
|
|
|
QRectF r = rect.normalized();
|
|
|
int margin = m_presenter->margin();
|
|
|
r.translate(-margin, -margin);
|
|
|
m_dataset->addDomain(r,m_presenter->geometry());
|
|
|
}
|
|
|
|
|
|
void QChart::zoomOut()
|
|
|
{
|
|
|
m_dataset->previousDomain();
|
|
|
}
|
|
|
|
|
|
void QChart::zoomReset()
|
|
|
{
|
|
|
m_dataset->clearDomains();
|
|
|
}
|
|
|
|
|
|
QChartAxis* QChart::axisX() const
|
|
|
{
|
|
|
return m_dataset->axisX();
|
|
|
}
|
|
|
|
|
|
QChartAxis* QChart::axisY() const
|
|
|
{
|
|
|
return m_dataset->axisY();
|
|
|
}
|
|
|
|
|
|
void QChart::resizeEvent(QGraphicsSceneResizeEvent *event)
|
|
|
{
|
|
|
|
|
|
m_rect = QRectF(QPoint(0,0),event->newSize());
|
|
|
QRectF rect = m_rect.adjusted(margin(),margin(), -margin(), -margin());
|
|
|
|
|
|
// recalculate title position
|
|
|
if (m_titleItem) {
|
|
|
QPointF center = m_rect.center() -m_titleItem->boundingRect().center();
|
|
|
m_titleItem->setPos(center.x(),m_rect.top()/2 + margin()/2);
|
|
|
}
|
|
|
|
|
|
//recalculate background gradient
|
|
|
if (m_backgroundItem) {
|
|
|
m_backgroundItem->setRect(rect);
|
|
|
}
|
|
|
|
|
|
QGraphicsWidget::resizeEvent(event);
|
|
|
update();
|
|
|
}
|
|
|
|
|
|
#include "moc_qchart.cpp"
|
|
|
|
|
|
QTCOMMERCIALCHART_END_NAMESPACE
|
|
|
|
