QGraphicsItem hover event

[xgoan]

Hi. I'm subclassing a QGraphicsItem, but I can't recieve the hover events. I'm forgoting anything?

The code is below

#include "square.h"
 
#include <QtGui>
 
Square::Square(QPolygonF &polygon, uint row, uint col){
	m_polygon=polygon;
	m_row=row; m_col=col;
	m_hover=false;
	setAcceptsHoverEvents(true);
}
 
QRectF Square::boundingRect() const{
	return m_polygon.boundingRect();
}
 
void Square::paint(QPainter *painter, const QStyleOptionGraphicsItem*, QWidget*){
	if(m_hover) painter->setBrush(Qt::red);
	painter->drawPolygon(m_polygon);
	painter->drawText(boundingRect(), QString("%1x%2").arg(m_row).arg(m_col));
}
 
void Square::hoverEnterEvent(QGraphicsSceneHoverEvent*){
	m_hover=true;	
}
 
void Square::hoverLeaveEvent(QGraphicsSceneHoverEvent*){
	m_hover=false;
}

#include "square.h"

#include <QtGui>

Square::Square(QPolygonF &polygon, uint row, uint col){
	m_polygon=polygon;
	m_row=row; m_col=col;
	m_hover=false;
	setAcceptsHoverEvents(true);
}

QRectF Square::boundingRect() const{
	return m_polygon.boundingRect();
}

void Square::paint(QPainter *painter, const QStyleOptionGraphicsItem*, QWidget*){
	if(m_hover) painter->setBrush(Qt::red);
	painter->drawPolygon(m_polygon);
	painter->drawText(boundingRect(), QString("%1x%2").arg(m_row).arg(m_col));
}

void Square::hoverEnterEvent(QGraphicsSceneHoverEvent*){
	m_hover=true;	
}

void Square::hoverLeaveEvent(QGraphicsSceneHoverEvent*){
	m_hover=false;
}

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Thanks, bye

[jpn]

Are you sure you are not receiving them? Maybe you should call QGraphicsItem::update() to schedule a repaint of the item?

[xgoan]

Yes, I have test it using QMessageBox::information... And don't works, but if I use mousePressEvent it works

[aamer4yu]

I think u just need to check if the item has mouse over it...

u can do it by the following

void Square::paint(QPainter *painter, const QStyleOptionGraphicsItem*, QWidget*)
{    
	if(option->state & QStyle::State_MouseOver) painter->setBrush(Qt::red);    
	painter->drawPolygon(m_polygon);    
	painter->drawText(boundingRect(), QString("%1x%2").arg(m_row).arg(m_col));
}

void Square::paint(QPainter *painter, const QStyleOptionGraphicsItem*, QWidget*)
{    
	if(option->state & QStyle::State_MouseOver) painter->setBrush(Qt::red);    
	painter->drawPolygon(m_polygon);    
	painter->drawText(boundingRect(), QString("%1x%2").arg(m_row).arg(m_col));
}

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if(option->state & QStyle::State_MouseOver)

hope it helps :0

[xgoan]

Don't work

[aamer4yu]

can we see the changed code u wrote ??
are u still using m_hover to check the hover event ?? and have u set setAcceptsHoverEvents(true); ???

[veiovis]

can we see the changed code u wrote ??
are u still using m_hover to check the hover event ?? and have u set setAcceptsHoverEvents(true); ???

This solved it for me.