|
|
/****************************************************************************
|
|
|
**
|
|
|
** Copyright (C) 2012 Digia Plc
|
|
|
** All rights reserved.
|
|
|
** For any questions to Digia, please use contact form at http://qt.digia.com
|
|
|
**
|
|
|
** This file is part of the Qt Commercial Charts Add-on.
|
|
|
**
|
|
|
** $QT_BEGIN_LICENSE$
|
|
|
** Licensees holding valid Qt Commercial licenses may use this file in
|
|
|
** accordance with the Qt Commercial License Agreement provided with the
|
|
|
** Software or, alternatively, in accordance with the terms contained in
|
|
|
** a written agreement between you and Digia.
|
|
|
**
|
|
|
** If you have questions regarding the use of this file, please use
|
|
|
** contact form at http://qt.digia.com
|
|
|
** $QT_END_LICENSE$
|
|
|
**
|
|
|
****************************************************************************/
|
|
|
|
|
|
#include "scatterchartitem_p.h"
|
|
|
#include "qscatterseries.h"
|
|
|
#include "qscatterseries_p.h"
|
|
|
#include "chartpresenter_p.h"
|
|
|
#include <QPainter>
|
|
|
#include <QGraphicsScene>
|
|
|
|
|
|
QTCOMMERCIALCHART_BEGIN_NAMESPACE
|
|
|
|
|
|
ScatterChartItem::ScatterChartItem(QScatterSeries *series, ChartPresenter *presenter) :
|
|
|
XYChartItem(series,presenter),
|
|
|
m_series(series),
|
|
|
m_items(this),
|
|
|
m_shape(QScatterSeries::MarkerShapeRectangle),
|
|
|
m_size(15)
|
|
|
|
|
|
{
|
|
|
QObject::connect(m_series->d_func(),SIGNAL(updated()), this, SLOT(handleUpdated()));
|
|
|
|
|
|
setZValue(ChartPresenter::ScatterSeriesZValue);
|
|
|
setFlags(QGraphicsItem::ItemClipsChildrenToShape);
|
|
|
|
|
|
handleUpdated();
|
|
|
|
|
|
m_items.setHandlesChildEvents(false);
|
|
|
|
|
|
// TODO: how to draw a drop shadow?
|
|
|
// QGraphicsDropShadowEffect *dropShadow = new QGraphicsDropShadowEffect();
|
|
|
// dropShadow->setOffset(2.0);
|
|
|
// dropShadow->setBlurRadius(2.0);
|
|
|
// setGraphicsEffect(dropShadow);
|
|
|
}
|
|
|
|
|
|
|
|
|
QRectF ScatterChartItem::boundingRect() const
|
|
|
{
|
|
|
return m_rect;
|
|
|
}
|
|
|
|
|
|
void ScatterChartItem::createPoints(int count)
|
|
|
{
|
|
|
for (int i = 0; i < count; ++i) {
|
|
|
|
|
|
QGraphicsItem *item = 0;
|
|
|
|
|
|
switch (m_shape) {
|
|
|
case QScatterSeries::MarkerShapeCircle:{
|
|
|
QGraphicsEllipseItem* i = new QGraphicsEllipseItem(0,0,m_size,m_size);
|
|
|
const QRectF& rect = i->boundingRect();
|
|
|
i->setPos(-rect.width()/2,-rect.height()/2);
|
|
|
item = new Marker(i,this);
|
|
|
break;
|
|
|
}
|
|
|
case QScatterSeries::MarkerShapeRectangle:{
|
|
|
QGraphicsRectItem* i = new QGraphicsRectItem(0,0,m_size,m_size);
|
|
|
i->setPos(-m_size/2,-m_size/2);
|
|
|
item = new Marker(i,this);
|
|
|
break;
|
|
|
}
|
|
|
default:
|
|
|
qWarning()<<"Unsupported marker type";
|
|
|
break;
|
|
|
|
|
|
}
|
|
|
m_items.addToGroup(item);
|
|
|
}
|
|
|
}
|
|
|
|
|
|
void ScatterChartItem::deletePoints(int count)
|
|
|
{
|
|
|
QList<QGraphicsItem *> items = m_items.childItems();
|
|
|
|
|
|
for (int i = 0; i < count; ++i) {
|
|
|
delete(items.takeLast());
|
|
|
}
|
|
|
}
|
|
|
|
|
|
void ScatterChartItem::markerSelected(Marker *marker)
|
|
|
{
|
|
|
emit XYChartItem::clicked(QPointF(m_series->x(marker->index()), m_series->y(marker->index())));
|
|
|
}
|
|
|
|
|
|
void ScatterChartItem::setLayout(QVector<QPointF>& points)
|
|
|
{
|
|
|
if(points.size()==0)
|
|
|
{
|
|
|
XYChartItem::setLayout(points);
|
|
|
return;
|
|
|
}
|
|
|
|
|
|
int diff = m_items.childItems().size() - points.size();
|
|
|
|
|
|
if(diff>0) {
|
|
|
deletePoints(diff);
|
|
|
}
|
|
|
else if(diff<0) {
|
|
|
createPoints(-diff);
|
|
|
}
|
|
|
|
|
|
if(diff!=0) handleUpdated();
|
|
|
|
|
|
QList<QGraphicsItem*> items = m_items.childItems();
|
|
|
|
|
|
for (int i = 0; i < points.size(); i++) {
|
|
|
Marker* item = static_cast<Marker*>(items.at(i));
|
|
|
const QPointF& point = points.at(i);
|
|
|
const QRectF& rect = item->boundingRect();
|
|
|
item->setIndex(i);
|
|
|
item->setPos(point.x()-rect.width()/2,point.y()-rect.height()/2);
|
|
|
if(!clipRect().contains(point)) {
|
|
|
item->setVisible(false);
|
|
|
}
|
|
|
else {
|
|
|
item->setVisible(true);
|
|
|
}
|
|
|
}
|
|
|
|
|
|
prepareGeometryChange();
|
|
|
m_rect = clipRect();
|
|
|
XYChartItem::setLayout(points);
|
|
|
}
|
|
|
|
|
|
|
|
|
void ScatterChartItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
|
|
|
{
|
|
|
Q_UNUSED(painter)
|
|
|
Q_UNUSED(option)
|
|
|
Q_UNUSED(widget)
|
|
|
}
|
|
|
|
|
|
void ScatterChartItem::setPen(const QPen& pen)
|
|
|
{
|
|
|
foreach(QGraphicsItem* item , m_items.childItems()) {
|
|
|
static_cast<Marker*>(item)->setPen(pen);
|
|
|
}
|
|
|
}
|
|
|
|
|
|
void ScatterChartItem::setBrush(const QBrush& brush)
|
|
|
{
|
|
|
foreach(QGraphicsItem* item , m_items.childItems()) {
|
|
|
static_cast<Marker*>(item)->setBrush(brush);
|
|
|
}
|
|
|
}
|
|
|
|
|
|
void ScatterChartItem::handleUpdated()
|
|
|
{
|
|
|
|
|
|
int count = m_items.childItems().count();
|
|
|
|
|
|
if(count==0) return;
|
|
|
|
|
|
bool recreate = m_size != m_series->size() || m_shape != m_series->shape();
|
|
|
|
|
|
//TODO: only rewrite on size change
|
|
|
|
|
|
m_size = m_series->size();
|
|
|
m_shape = m_series->shape();
|
|
|
|
|
|
if(recreate){
|
|
|
deletePoints(count);
|
|
|
createPoints(count);
|
|
|
}
|
|
|
|
|
|
setPen(m_series->pen());
|
|
|
setBrush(m_series->brush());
|
|
|
}
|
|
|
|
|
|
#include "moc_scatterchartitem_p.cpp"
|
|
|
|
|
|
QTCOMMERCIALCHART_END_NAMESPACE
|
|
|
|
