У меня есть собственный подкласс QDeclarativeItem с именем Polygon.Я добавляю MouseArea, но onEntered или onPressed не работает, или я ожидаю, что произойдет что-то неправильное?Я вижу свои полигоны в окне, но на консоли onPressed или onEntered ничего не пишется.
Вот файл QML:
import MyTypes 1.0
import QtQuick 1.0
import Qt 4.7
Item {
id: container
width: 350; height: 250
Polygon {
id: aPolygon
width: 20; height: 20
name: "A simple polygon"
color: "blue"
vertices:[
Point{x:20.0; y:40.0},
Point{x:40.0; y:40.0},
Point{x:40.0; y:20.0},
Point{x:20.0; y:20.0}
]
MouseArea{
anchors.fill: parent
drag.target: aPolygon
drag.axis: Drag.XandYAxis
drag.minimumX: 0
drag.maximumX: container.width - parent.width
drag.minimumY: 0
drag.maximumY: container.height - parent.width
onPressed:console.log("============== ==onPressed")
}
}
Polygon {
id: bPolygon
//anchors.centerIn: parent
width: 20; height: 20
name: "A simple polygon"
color: "blue"
vertices:[
Point{x:60.0; y:80.0},
Point{x:80.0; y:80.0},
Point{x:80.0; y:60.0},
Point{x:60.0; y:60.0}
]
MouseArea{
//hoverEnabled: false
enabled: visible
hoverEnabled: visible
anchors.fill: parent
acceptedButtons: Qt.LeftButton | Qt.RightButton
onEntered: {
console.log("============== ==onEntered")
}
}
}
}
Спасибо за любую идею.
Редактировать:
polygon.cpp
#include "polygon.h"
#include "point.h"
#include <QPainter>
#include <stdio.h>
#include <iostream>
#include <sstream>
#include <QGraphicsSceneDragDropEvent>
#include <QFocusEvent>
#include "DeclarativeDragDropEvent.h"
using namespace std;
using namespace Qt;
Polygon::Polygon(QDeclarativeItem *parent)
: QDeclarativeItem(parent)
{
// need to disable this flag to draw inside a QDeclarativeItem
//setFlag(QDeclarativeItem::ItemHasNoContents, false);
setFlags(ItemIsSelectable|ItemIsMovable|ItemIsFocusable);
setAcceptDrops(true);
setAcceptedMouseButtons( Qt::LeftButton );
}
/*void Polygon::mousePressEvent(QGraphicsSceneMouseEvent *event)
{
forceActiveFocus();
}
void Polygon::focusOutEvent(QFocusEvent *event)
{
cout<<"focusout"<<endl;
this->setSelected( false );
}*/
/*QVariant Polygon::itemChange(GraphicsItemChange change, const QVariant &value)
{
return QGraphicsItem::itemChange(change, value);
}*/
/*void Polygon::focusInEvent ( QFocusEvent * event ){
cout<<"focusin"<<endl;
}*/
QRectF Polygon::boundingRect() const{
QVector<QPointF> vPnt=listToVector(m_vertices);
return QPolygonF(vPnt).boundingRect();
}
QPainterPath Polygon::shape () const
{
QPainterPath path;
QVector<QPointF> vPnt=listToVector(m_vertices);
path.addPolygon(QPolygonF(vPnt));
return path;
}
QString Polygon::name() const
{
return m_name;
}
void Polygon::setName(const QString &name)
{
m_name = name;
}
QColor Polygon::color() const
{
return m_color;
}
void Polygon::setColor(const QColor &color)
{
m_color = color;
}
void Polygon::paint(QPainter *painter, const QStyleOptionGraphicsItem *, QWidget *)
{
QPen pen(m_color, 2);
painter->setPen(pen);
painter->setRenderHints(QPainter::Antialiasing, true);
QVector<QPointF> vPnt=listToVector(m_vertices);
painter->setBrush(QBrush(m_color,Qt::SolidPattern));
painter-> drawPolygon(QPolygonF(vPnt),Qt::OddEvenFill);
}
QVector<QPointF> Polygon:: listToVector(QList<Point *> lpnt) const{
QVector<QPointF> vPnt;
for(int i=0;i<lpnt.length();i++){
vPnt.append(QPointF(lpnt.at(i)->x(),lpnt.at(i)->y()));
}
return vPnt;
}
QDeclarativeListProperty<Point> Polygon::vertices()
{
return QDeclarativeListProperty<Point>(this, 0, &Polygon::append_vertex);
}
void Polygon::append_vertex(QDeclarativeListProperty<Point> *list, Point *vertex)
{
Polygon *polygon = qobject_cast<Polygon *>(list->object);
if (polygon) {
vertex->setParentItem(polygon);
polygon->m_vertices.append(vertex);
}
}