|
|
#include "linechartitem_p.h"
|
|
|
#include "qlinechartseries.h"
|
|
|
#include "chartpresenter_p.h"
|
|
|
#include <QPainter>
|
|
|
|
|
|
|
|
|
QTCOMMERCIALCHART_BEGIN_NAMESPACE
|
|
|
|
|
|
//TODO: optimazie : remove points which are not visible
|
|
|
|
|
|
LineChartItem::LineChartItem(ChartPresenter* presenter, QLineChartSeries* series,QGraphicsItem *parent):ChartItem(parent),
|
|
|
m_presenter(presenter),
|
|
|
m_series(series),
|
|
|
m_dirtyData(false),
|
|
|
m_dirtyGeometry(false),
|
|
|
m_dirtyDomain(false)
|
|
|
{
|
|
|
|
|
|
}
|
|
|
|
|
|
QRectF LineChartItem::boundingRect() const
|
|
|
{
|
|
|
return m_rect;
|
|
|
}
|
|
|
|
|
|
QPainterPath LineChartItem::shape() const
|
|
|
{
|
|
|
return m_path;
|
|
|
}
|
|
|
|
|
|
|
|
|
void LineChartItem::addPoints(const QVector<QPointF>& points)
|
|
|
{
|
|
|
m_data = points;
|
|
|
for(int i=0; i<m_data.size();i++){
|
|
|
const QPointF& point =m_data[i];
|
|
|
QGraphicsRectItem* item = new QGraphicsRectItem(0,0,3,3,this);
|
|
|
item->setPos(point.x()-1,point.y()-1);;
|
|
|
if(!m_clipRect.contains(point) || !m_series->isPointsVisible()) item->setVisible(false);
|
|
|
m_points << item;
|
|
|
}
|
|
|
}
|
|
|
|
|
|
void LineChartItem::addPoint(const QPointF& point)
|
|
|
{
|
|
|
m_data << point;
|
|
|
QGraphicsRectItem* item = new QGraphicsRectItem(0,0,3,3,this);
|
|
|
m_clipRect.contains(point);
|
|
|
item->setPos(point.x()-1,point.y()-1);
|
|
|
if(!m_clipRect.contains(point) || !m_series->isPointsVisible()) item->setVisible(false);
|
|
|
m_points << item;
|
|
|
}
|
|
|
|
|
|
void LineChartItem::removePoint(const QPointF& point)
|
|
|
{
|
|
|
Q_ASSERT(m_data.count() == m_points.count());
|
|
|
int index = m_data.lastIndexOf(point,0);
|
|
|
m_data.remove(index);
|
|
|
delete(m_points.takeAt(index));
|
|
|
}
|
|
|
|
|
|
void LineChartItem::setPoint(const QPointF& oldPoint,const QPointF& newPoint)
|
|
|
{
|
|
|
Q_ASSERT(m_data.count() == m_points.count());
|
|
|
int index = m_data.lastIndexOf(oldPoint,0);
|
|
|
|
|
|
if(index > -1){
|
|
|
m_data.replace(index,newPoint);
|
|
|
QGraphicsItem* item = m_points.at(index);
|
|
|
item->setPos(newPoint.x()-1,newPoint.y()-1);
|
|
|
}
|
|
|
}
|
|
|
|
|
|
void LineChartItem::setPoint(int index,const QPointF& point)
|
|
|
{
|
|
|
Q_ASSERT(m_data.count() == m_points.count());
|
|
|
Q_ASSERT(index>=0);
|
|
|
|
|
|
m_data.replace(index,point);
|
|
|
QGraphicsItem* item = m_points.at(index);
|
|
|
item->setPos(point.x()-1,point.y()-1);
|
|
|
}
|
|
|
|
|
|
void LineChartItem::clear()
|
|
|
{
|
|
|
qDeleteAll(m_points);
|
|
|
m_points.clear();
|
|
|
m_hash.clear();
|
|
|
m_path = QPainterPath();
|
|
|
m_rect = QRect();
|
|
|
m_data.clear();
|
|
|
}
|
|
|
|
|
|
void LineChartItem::clearView()
|
|
|
{
|
|
|
qDeleteAll(m_points);
|
|
|
m_points.clear();
|
|
|
m_path = QPainterPath();
|
|
|
m_rect = QRect();
|
|
|
m_data.clear();
|
|
|
}
|
|
|
|
|
|
void LineChartItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
|
|
|
{
|
|
|
Q_UNUSED(widget);
|
|
|
Q_UNUSED(option);
|
|
|
painter->setPen(m_pen);
|
|
|
painter->setClipRect(m_clipRect);
|
|
|
painter->drawPath(m_path);
|
|
|
}
|
|
|
|
|
|
void LineChartItem::calculatePoint(QPointF& point, int index, const QLineChartSeries* series,const QSizeF& size, const Domain& domain) const
|
|
|
{
|
|
|
const qreal deltaX = size.width()/domain.spanX();
|
|
|
const qreal deltaY = size.height()/domain.spanY();
|
|
|
qreal x = (series->x(index) - domain.m_minX)* deltaX;
|
|
|
qreal y = (series->y(index) - domain.m_minY)*-deltaY + size.height();
|
|
|
point.setX(x);
|
|
|
point.setY(y);
|
|
|
}
|
|
|
|
|
|
|
|
|
void LineChartItem::calculatePoints(QVector<QPointF>& points, QHash<int,int>& hash,const QLineChartSeries* series,const QSizeF& size, const Domain& domain) const
|
|
|
{
|
|
|
const qreal deltaX = size.width()/domain.spanX();
|
|
|
const qreal deltaY = size.height()/domain.spanY();
|
|
|
|
|
|
for (int i = 0; i < series->count(); ++i) {
|
|
|
qreal x = (series->x(i) - domain.m_minX)* deltaX;
|
|
|
qreal y = (series->y(i) - domain.m_minY)*-deltaY + size.height();
|
|
|
hash[i] = points.size();
|
|
|
points << QPointF(x,y);
|
|
|
}
|
|
|
}
|
|
|
|
|
|
void LineChartItem::updateDomain()
|
|
|
{
|
|
|
clear();
|
|
|
prepareGeometryChange();
|
|
|
calculatePoints(m_data,m_hash,m_series,m_size, m_domain);
|
|
|
addPoints(m_data);
|
|
|
}
|
|
|
|
|
|
void LineChartItem::updateData()
|
|
|
{
|
|
|
//for now the same
|
|
|
updateDomain();
|
|
|
}
|
|
|
|
|
|
void LineChartItem::updateGeometry()
|
|
|
{
|
|
|
|
|
|
if(m_data.size()==0) return;
|
|
|
|
|
|
prepareGeometryChange();
|
|
|
QPainterPath path;
|
|
|
const QPointF& point = m_data.at(0);
|
|
|
path.moveTo(point);
|
|
|
|
|
|
foreach( const QPointF& point , m_data) {
|
|
|
path.lineTo(point);
|
|
|
}
|
|
|
|
|
|
m_path = path;
|
|
|
m_rect = path.boundingRect();
|
|
|
}
|
|
|
|
|
|
void LineChartItem::setPen(const QPen& pen)
|
|
|
{
|
|
|
m_pen = pen;
|
|
|
}
|
|
|
|
|
|
//handlers
|
|
|
|
|
|
void LineChartItem::handleModelChanged(int index)
|
|
|
{
|
|
|
Q_ASSERT(index<m_series->count());
|
|
|
if(m_hash.contains(index)){
|
|
|
int i = m_hash.value(index);
|
|
|
QPointF point;
|
|
|
calculatePoint(point,index,m_series,m_size,m_domain);
|
|
|
setPoint(i,point);
|
|
|
}
|
|
|
update();
|
|
|
}
|
|
|
|
|
|
void LineChartItem::handleDomainChanged(const Domain& domain)
|
|
|
{
|
|
|
m_domain = domain;
|
|
|
updateDomain();
|
|
|
update();
|
|
|
}
|
|
|
|
|
|
void LineChartItem::handleGeometryChanged(const QRectF& rect)
|
|
|
{
|
|
|
Q_ASSERT(rect.isValid());
|
|
|
m_size=rect.size();
|
|
|
m_clipRect=rect.translated(-rect.topLeft());
|
|
|
updateDomain();
|
|
|
updateGeometry();
|
|
|
setPos(rect.topLeft());
|
|
|
update();
|
|
|
}
|
|
|
|
|
|
|
|
|
#include "moc_linechartitem_p.cpp"
|
|
|
|
|
|
QTCOMMERCIALCHART_END_NAMESPACE
|
|
|
|
