|
|
/****************************************************************************
|
|
|
**
|
|
|
** 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>
|
|
|
#include <QDebug>
|
|
|
#include <QGraphicsSceneMouseEvent>
|
|
|
|
|
|
QTCOMMERCIALCHART_BEGIN_NAMESPACE
|
|
|
|
|
|
ScatterChartItem::ScatterChartItem(QScatterSeries *series, ChartPresenter *presenter) :
|
|
|
XYChart(series,presenter),
|
|
|
QGraphicsItem(presenter ? presenter->rootItem() : 0),
|
|
|
m_series(series),
|
|
|
m_items(this),
|
|
|
m_visible(true),
|
|
|
m_shape(QScatterSeries::MarkerShapeRectangle),
|
|
|
m_size(15)
|
|
|
{
|
|
|
QObject::connect(m_series->d_func(),SIGNAL(updated()), this, SLOT(handleUpdated()));
|
|
|
QObject::connect(m_series, SIGNAL(visibleChanged()), this, SLOT(handleUpdated()));
|
|
|
|
|
|
setZValue(ChartPresenter::ScatterSeriesZValue);
|
|
|
setFlags(QGraphicsItem::ItemClipsChildrenToShape);
|
|
|
|
|
|
handleUpdated();
|
|
|
|
|
|
m_items.setHandlesChildEvents(false);
|
|
|
}
|
|
|
|
|
|
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: {
|
|
|
item = new CircleMarker(0,0,m_size,m_size,this);
|
|
|
const QRectF& rect = item->boundingRect();
|
|
|
item->setPos(-rect.width()/2,-rect.height()/2);
|
|
|
break;
|
|
|
}
|
|
|
case QScatterSeries::MarkerShapeRectangle: {
|
|
|
item = new RectangleMarker(0,0,m_size,m_size,this);
|
|
|
item->setPos(-m_size/2,-m_size/2);
|
|
|
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) {
|
|
|
QGraphicsItem * item = items.takeLast();
|
|
|
m_markerMap.remove(item);
|
|
|
delete(item);
|
|
|
}
|
|
|
}
|
|
|
|
|
|
void ScatterChartItem::markerSelected(QGraphicsItem *marker)
|
|
|
{
|
|
|
emit XYChart::clicked(calculateDomainPoint(m_markerMap[marker]));
|
|
|
}
|
|
|
|
|
|
void ScatterChartItem::updateGeometry()
|
|
|
{
|
|
|
|
|
|
const QVector<QPointF>& points = geometryPoints();
|
|
|
|
|
|
if(points.size()==0)
|
|
|
{
|
|
|
deletePoints(m_items.childItems().count());
|
|
|
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++) {
|
|
|
QGraphicsItem* item = items.at(i);
|
|
|
const QPointF& point = points.at(i);
|
|
|
const QRectF& rect = item->boundingRect();
|
|
|
m_markerMap[item]=point;
|
|
|
item->setPos(point.x()-rect.width()/2,point.y()-rect.height()/2);
|
|
|
if(!m_visible || !clipRect().contains(point)) {
|
|
|
item->setVisible(false);
|
|
|
}
|
|
|
else {
|
|
|
item->setVisible(true);
|
|
|
}
|
|
|
}
|
|
|
|
|
|
prepareGeometryChange();
|
|
|
m_rect = clipRect();
|
|
|
setPos(origin());
|
|
|
}
|
|
|
|
|
|
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<QAbstractGraphicsShapeItem*>(item)->setPen(pen);
|
|
|
}
|
|
|
}
|
|
|
|
|
|
void ScatterChartItem::setBrush(const QBrush& brush)
|
|
|
{
|
|
|
foreach(QGraphicsItem* item , m_items.childItems()) {
|
|
|
static_cast<QAbstractGraphicsShapeItem*>(item)->setBrush(brush);
|
|
|
}
|
|
|
}
|
|
|
|
|
|
void ScatterChartItem::handleUpdated()
|
|
|
{
|
|
|
int count = m_items.childItems().count();
|
|
|
|
|
|
if(count==0) return;
|
|
|
|
|
|
bool recreate = m_visible != m_series->isVisible()
|
|
|
|| m_size != m_series->markerSize()
|
|
|
|| m_shape != m_series->markerShape();
|
|
|
|
|
|
m_visible = m_series->isVisible();
|
|
|
m_size = m_series->markerSize();
|
|
|
m_shape = m_series->markerShape();
|
|
|
|
|
|
if(recreate) {
|
|
|
// TODO: optimize handleUpdate to recreate points only in case shape changed
|
|
|
deletePoints(count);
|
|
|
createPoints(count);
|
|
|
|
|
|
// Updating geometry is now safe, because it won't call handleUpdated unless it creates/deletes points
|
|
|
updateGeometry();
|
|
|
}
|
|
|
|
|
|
setPen(m_series->pen());
|
|
|
setBrush(m_series->brush());
|
|
|
update();
|
|
|
}
|
|
|
|
|
|
#include "moc_scatterchartitem_p.cpp"
|
|
|
|
|
|
QTCOMMERCIALCHART_END_NAMESPACE
|
|
|
|
