|
|
#include "qchart.h"
|
|
|
#include "qchartaxis.h"
|
|
|
#include "qlegend.h"
|
|
|
#include "chartpresenter_p.h"
|
|
|
#include "chartdataset_p.h"
|
|
|
#include <QGraphicsScene>
|
|
|
#include <QGraphicsSceneResizeEvent>
|
|
|
#include <QDebug>
|
|
|
|
|
|
QTCOMMERCIALCHART_BEGIN_NAMESPACE
|
|
|
|
|
|
/*!
|
|
|
\enum QChart::ChartTheme
|
|
|
|
|
|
This enum describes the theme used by the chart.
|
|
|
|
|
|
\value ChartThemeDefault Follows the GUI style of the Operating System
|
|
|
\value ChartThemeVanilla
|
|
|
\value ChartThemeIcy
|
|
|
\value ChartThemeGrayscale
|
|
|
\value ChartThemeScientific
|
|
|
\value ChartThemeBlueCerulean
|
|
|
\value ChartThemeLight
|
|
|
\value ChartThemeCount Not really a theme; the total count of themes.
|
|
|
*/
|
|
|
|
|
|
/*!
|
|
|
\enum QChart::AnimationOption
|
|
|
|
|
|
For enabling/disabling animations. Defaults to NoAnimation.
|
|
|
|
|
|
\value NoAnimation
|
|
|
\value GridAxisAnimations
|
|
|
\value SeriesAnimations
|
|
|
\value AllAnimations
|
|
|
*/
|
|
|
|
|
|
/*!
|
|
|
\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.
|
|
|
\sa QChartView
|
|
|
*/
|
|
|
|
|
|
/*!
|
|
|
Constructs a chart object which is a child of a\a parent. Parameter \a wFlags is passed to the QGraphicsWidget constructor.
|
|
|
*/
|
|
|
QChart::QChart(QGraphicsItem *parent, Qt::WindowFlags wFlags) : QGraphicsWidget(parent,wFlags),
|
|
|
m_backgroundItem(0),
|
|
|
m_titleItem(0),
|
|
|
m_legend(new QLegend(this)),
|
|
|
m_dataset(new ChartDataSet(this)),
|
|
|
m_presenter(new ChartPresenter(this,m_dataset))
|
|
|
{
|
|
|
connect(m_dataset,SIGNAL(seriesAdded(QSeries*,Domain*)),m_legend,SLOT(handleSeriesAdded(QSeries*,Domain*)));
|
|
|
connect(m_dataset,SIGNAL(seriesRemoved(QSeries*)),m_legend,SLOT(handleSeriesRemoved(QSeries*)));
|
|
|
}
|
|
|
|
|
|
/*!
|
|
|
Destroys the object and it's children, like QChartSeries and QChartAxis object added to it.
|
|
|
*/
|
|
|
QChart::~QChart()
|
|
|
{
|
|
|
disconnect(m_dataset,SIGNAL(seriesAdded(QSeries*,Domain*)),m_legend,SLOT(handleSeriesAdded(QSeries*,Domain*)));
|
|
|
disconnect(m_dataset,SIGNAL(seriesRemoved(QSeries*)),m_legend,SLOT(handleSeriesRemoved(QSeries*)));
|
|
|
}
|
|
|
|
|
|
/*!
|
|
|
Adds the \a series and optional \a axisY 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(QSeries* series, QChartAxis* axisY)
|
|
|
{
|
|
|
m_dataset->addSeries(series, axisY);
|
|
|
}
|
|
|
|
|
|
/*!
|
|
|
Removes the \a series specified in a perameter from the QChartView.
|
|
|
It releses its ownership of the specified QChartSeries object.
|
|
|
It does not delete the pointed QChartSeries data object
|
|
|
\sa addSeries(), removeAllSeries()
|
|
|
*/
|
|
|
void QChart::removeSeries(QSeries* series)
|
|
|
{
|
|
|
m_dataset->removeSeries(series);
|
|
|
}
|
|
|
|
|
|
/*!
|
|
|
Removes all the QChartSeries that have been added to the QChartView
|
|
|
It also deletes the pointed QChartSeries data objects
|
|
|
\sa addSeries(), removeSeries()
|
|
|
*/
|
|
|
void QChart::removeAllSeries()
|
|
|
{
|
|
|
m_dataset->removeAllSeries();
|
|
|
}
|
|
|
|
|
|
/*!
|
|
|
Sets the \a brush that is used for painting the background of the chart area.
|
|
|
*/
|
|
|
void QChart::setChartBackgroundBrush(const QBrush& brush)
|
|
|
{
|
|
|
createChartBackgroundItem();
|
|
|
m_backgroundItem->setBrush(brush);
|
|
|
m_backgroundItem->update();
|
|
|
}
|
|
|
|
|
|
/*!
|
|
|
Sets the \a pen that is used for painting the background of the chart area.
|
|
|
*/
|
|
|
void QChart::setChartBackgroundPen(const QPen& pen)
|
|
|
{
|
|
|
createChartBackgroundItem();
|
|
|
m_backgroundItem->setPen(pen);
|
|
|
m_backgroundItem->update();
|
|
|
}
|
|
|
|
|
|
/*!
|
|
|
Sets the chart \a title. The description text that is drawn above the chart.
|
|
|
*/
|
|
|
void QChart::setChartTitle(const QString& title)
|
|
|
{
|
|
|
createChartTitleItem();
|
|
|
m_titleItem->setText(title);
|
|
|
updateLayout();
|
|
|
}
|
|
|
|
|
|
/*!
|
|
|
Returns the chart title. The description text that is drawn above the chart.
|
|
|
*/
|
|
|
QString QChart::chartTitle() const
|
|
|
{
|
|
|
if(m_titleItem)
|
|
|
return m_titleItem->text();
|
|
|
else
|
|
|
return QString();
|
|
|
}
|
|
|
|
|
|
/*!
|
|
|
Sets the \a font that is used for rendering the description text that is rendered above the chart.
|
|
|
*/
|
|
|
void QChart::setChartTitleFont(const QFont& font)
|
|
|
{
|
|
|
createChartTitleItem();
|
|
|
m_titleItem->setFont(font);
|
|
|
updateLayout();
|
|
|
}
|
|
|
|
|
|
/*!
|
|
|
Sets the \a brush used for rendering the title text.
|
|
|
*/
|
|
|
void QChart::setChartTitleBrush(const QBrush &brush)
|
|
|
{
|
|
|
createChartTitleItem();
|
|
|
m_titleItem->setBrush(brush);
|
|
|
updateLayout();
|
|
|
}
|
|
|
|
|
|
/*!
|
|
|
Returns the brush used for rendering the title text.
|
|
|
*/
|
|
|
QBrush QChart::chartTitleBrush()
|
|
|
{
|
|
|
createChartTitleItem();
|
|
|
return m_titleItem->brush();
|
|
|
}
|
|
|
|
|
|
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 QGraphicsSimpleTextItem(this);
|
|
|
m_titleItem->setZValue(ChartPresenter::BackgroundZValue);
|
|
|
}
|
|
|
}
|
|
|
|
|
|
/*!
|
|
|
Returns the chart margin, which is the distance between the widget edge and the part of the chart where the actual data can be displayed.
|
|
|
\sa setMargin()
|
|
|
*/
|
|
|
int QChart::margin() const
|
|
|
{
|
|
|
return m_presenter->margin();
|
|
|
}
|
|
|
|
|
|
/*!
|
|
|
Sets the chart \a margin, which is the distance between the widget edge and the part of the chart where the actual data can be displayed.
|
|
|
\sa margin()
|
|
|
*/
|
|
|
void QChart::setMargin(int margin)
|
|
|
{
|
|
|
m_presenter->setMargin(margin);
|
|
|
updateLayout();
|
|
|
}
|
|
|
|
|
|
/*!
|
|
|
Sets the \a theme used by the chart for rendering the graphical representation of the data
|
|
|
\sa ChartTheme, chartTheme()
|
|
|
*/
|
|
|
void QChart::setChartTheme(QChart::ChartTheme theme)
|
|
|
{
|
|
|
m_presenter->setChartTheme(theme);
|
|
|
}
|
|
|
|
|
|
/*!
|
|
|
Returns the theme enum used by the chart.
|
|
|
\sa ChartTheme, setChartTheme()
|
|
|
*/
|
|
|
QChart::ChartTheme QChart::chartTheme() const
|
|
|
{
|
|
|
return m_presenter->chartTheme();
|
|
|
}
|
|
|
|
|
|
/*!
|
|
|
Zooms in the view by a factor of 2
|
|
|
*/
|
|
|
void QChart::zoomIn()
|
|
|
{
|
|
|
m_presenter->zoomIn();
|
|
|
}
|
|
|
|
|
|
/*!
|
|
|
Zooms in the view to a maximum level at which \a rect is still fully visible.
|
|
|
*/
|
|
|
void QChart::zoomIn(const QRectF& rect)
|
|
|
{
|
|
|
|
|
|
if(!rect.isValid()) return;
|
|
|
m_presenter->zoomIn(rect);
|
|
|
}
|
|
|
|
|
|
/*!
|
|
|
Restores the view zoom level to the previous one.
|
|
|
*/
|
|
|
void QChart::zoomOut()
|
|
|
{
|
|
|
m_presenter->zoomOut();
|
|
|
}
|
|
|
|
|
|
/*!
|
|
|
Resets to the default view.
|
|
|
*/
|
|
|
void QChart::zoomReset()
|
|
|
{
|
|
|
m_presenter->zoomReset();
|
|
|
}
|
|
|
|
|
|
/*!
|
|
|
Returns the pointer to the x axis object of the chart
|
|
|
*/
|
|
|
QChartAxis* QChart::axisX() const
|
|
|
{
|
|
|
return m_dataset->axisX();
|
|
|
}
|
|
|
|
|
|
/*!
|
|
|
Returns the pointer to the y axis object of the chart
|
|
|
*/
|
|
|
QChartAxis* QChart::axisY() const
|
|
|
{
|
|
|
return m_dataset->axisY();
|
|
|
}
|
|
|
|
|
|
/*!
|
|
|
Returns the legend object of the chart
|
|
|
*/
|
|
|
QLegend* QChart::legend()
|
|
|
{
|
|
|
return m_legend;
|
|
|
}
|
|
|
|
|
|
/*!
|
|
|
Resizes and updates the chart area using the \a event data
|
|
|
*/
|
|
|
void QChart::resizeEvent(QGraphicsSceneResizeEvent *event)
|
|
|
{
|
|
|
|
|
|
m_rect = QRectF(QPoint(0,0),event->newSize());
|
|
|
updateLayout();
|
|
|
QGraphicsWidget::resizeEvent(event);
|
|
|
update();
|
|
|
}
|
|
|
|
|
|
/*!
|
|
|
Sets animation \a options for the chart
|
|
|
*/
|
|
|
void QChart::setAnimationOptions(AnimationOptions options)
|
|
|
{
|
|
|
m_presenter->setAnimationOptions(options);
|
|
|
}
|
|
|
|
|
|
/*!
|
|
|
Returns animation options for the chart
|
|
|
*/
|
|
|
QChart::AnimationOptions QChart::animationOptions() const
|
|
|
{
|
|
|
return m_presenter->animationOptions();
|
|
|
}
|
|
|
|
|
|
void QChart::scrollLeft()
|
|
|
{
|
|
|
m_presenter->scroll(-m_presenter->geometry().width()/(axisX()->ticksCount()-1),0);
|
|
|
}
|
|
|
|
|
|
void QChart::scrollRight()
|
|
|
{
|
|
|
m_presenter->scroll(m_presenter->geometry().width()/(axisX()->ticksCount()-1),0);
|
|
|
}
|
|
|
void QChart::scrollUp()
|
|
|
{
|
|
|
m_presenter->scroll(0,m_presenter->geometry().width()/(axisY()->ticksCount()-1));
|
|
|
}
|
|
|
void QChart::scrollDown()
|
|
|
{
|
|
|
m_presenter->scroll(0,-m_presenter->geometry().width()/(axisY()->ticksCount()-1));
|
|
|
}
|
|
|
|
|
|
void QChart::updateLayout()
|
|
|
{
|
|
|
if(!m_rect.isValid()) return;
|
|
|
|
|
|
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);
|
|
|
}
|
|
|
|
|
|
// recalculate legend position
|
|
|
// TODO: better layout
|
|
|
if (m_legend) {
|
|
|
QRectF boundingRect(m_rect.adjusted(margin(),
|
|
|
rect.height() + margin() + margin()/2,
|
|
|
-margin(),
|
|
|
-margin()/2 + m_legend->minimumSize().height()));
|
|
|
m_legend->handleGeometryChanged(boundingRect);
|
|
|
}
|
|
|
}
|
|
|
#include "moc_qchart.cpp"
|
|
|
|
|
|
QTCOMMERCIALCHART_END_NAMESPACE
|
|
|
|
