|
|
#include "qchartwidget.h"
|
|
|
#include "qchartseries.h"
|
|
|
#include <QGraphicsView>
|
|
|
#include <QGraphicsScene>
|
|
|
#include <QResizeEvent>
|
|
|
|
|
|
QTCOMMERCIALCHART_BEGIN_NAMESPACE
|
|
|
|
|
|
QChartWidget::QChartWidget(QWidget *parent) :
|
|
|
QGraphicsView(parent),
|
|
|
m_rubberBand(QRubberBand::Rectangle, this),
|
|
|
m_originX(0)
|
|
|
{
|
|
|
setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
|
|
|
m_scene = new QGraphicsScene();
|
|
|
setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
|
|
|
setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
|
|
|
setScene(m_scene);
|
|
|
|
|
|
m_chart = new QChart();
|
|
|
m_scene->addItem(m_chart);
|
|
|
m_rubberBand.setEnabled(true); // TODO: should zoom be enabled by default?
|
|
|
show();
|
|
|
}
|
|
|
|
|
|
QChartWidget::~QChartWidget()
|
|
|
{
|
|
|
}
|
|
|
|
|
|
void QChartWidget::resizeEvent(QResizeEvent *event)
|
|
|
{
|
|
|
m_scene->setSceneRect(0,0,size().width(),size().height());
|
|
|
m_chart->setSize(size());
|
|
|
QWidget::resizeEvent(event);
|
|
|
}
|
|
|
|
|
|
QSize QChartWidget::sizeHint() const
|
|
|
{
|
|
|
// TODO: calculate size hint based on contents?
|
|
|
return QSize(100, 100);
|
|
|
}
|
|
|
|
|
|
void QChartWidget::mousePressEvent(QMouseEvent *event)
|
|
|
{
|
|
|
if(m_rubberBand.isEnabled() && event->button() == Qt::LeftButton) {
|
|
|
int margin = m_chart->margin();
|
|
|
QRect rect(margin, margin, width() - 2 * margin, height() - 2 * margin);
|
|
|
|
|
|
if (rect.contains(event->pos())) {
|
|
|
m_originX = event->pos().x();
|
|
|
m_rubberBand.setGeometry(QRect(m_originX, 0, 0, height()));
|
|
|
m_rubberBand.show();
|
|
|
event->accept();
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
|
|
|
void QChartWidget::mouseMoveEvent(QMouseEvent *event)
|
|
|
{
|
|
|
if(m_rubberBand.isVisible())
|
|
|
m_rubberBand.setGeometry(QRect(m_originX, 0,
|
|
|
event->pos().x() - m_originX, height()).normalized());
|
|
|
}
|
|
|
|
|
|
void QChartWidget::mouseReleaseEvent(QMouseEvent *event)
|
|
|
{
|
|
|
if (event->button() == Qt::LeftButton && m_rubberBand.isVisible()) {
|
|
|
m_rubberBand.hide();
|
|
|
QRect rect = m_rubberBand.geometry();
|
|
|
m_chart->zoomInToRect(rect);
|
|
|
event->accept();
|
|
|
}
|
|
|
|
|
|
if(event->button()==Qt::RightButton)
|
|
|
m_chart->zoomReset();
|
|
|
}
|
|
|
|
|
|
void QChartWidget::addSeries(QChartSeries* series)
|
|
|
{
|
|
|
m_chart->addSeries(series);
|
|
|
}
|
|
|
|
|
|
QChartSeries* QChartWidget::createSeries(QChartSeries::QChartSeriesType type)
|
|
|
{
|
|
|
return m_chart->createSeries(type);
|
|
|
}
|
|
|
|
|
|
void QChartWidget::setTheme(QChart::ChartThemeId theme)
|
|
|
{
|
|
|
m_chart->setTheme(theme);
|
|
|
}
|
|
|
|
|
|
void QChartWidget::setZoomEnabled(bool enabled)
|
|
|
{
|
|
|
m_rubberBand.setEnabled(enabled);
|
|
|
}
|
|
|
|
|
|
#include "moc_qchartwidget.cpp"
|
|
|
|
|
|
QTCOMMERCIALCHART_END_NAMESPACE
|
|
|
|
