DiagramDesigner/diagramCavas/source/graphicsItem/handleRect.cpp

#include "graphicsItem/handleRect.h"
#include <QPainter>

HandleRect::HandleRect(QGraphicsItem *parent)
    :ItemControlHandle(parent)
{

}

HandleRect::~HandleRect()
{
}

QRectF HandleRect::boundingRect() const
{
    // 设置边界矩形，这里我们返回一个从(10,10)开始，宽度为100，高度为50的矩形
    return QRectF(-HNDLE_SIZE / 2,
                  -HNDLE_SIZE / 2,
                  HNDLE_SIZE,
                  HNDLE_SIZE);
}

void HandleRect::paint(QPainter* painter, const QStyleOptionGraphicsItem* option, QWidget* widget)
{
    Q_UNUSED(option)
    Q_UNUSED(widget)

    painter->setPen(Qt::SolidLine);
    painter->setRenderHint(QPainter::Antialiasing, true);

    if(m_type==T_resize)
    {
        painter->setBrush(Qt::white);
        painter->drawRect(boundingRect());
    }
    else if(m_type==T_rotate)
    {
        painter->setPen(Qt::NoPen);
        painter->setBrush(Qt::NoBrush);
        painter->drawRect(boundingRect());
    }
    else if(m_type==T_editShape)
    {
        painter->setBrush(Qt::green);
        painter->drawEllipse(boundingRect().center(), HNDLE_SIZE / 2, HNDLE_SIZE / 2);
    }
    else if(m_type==T_lineIn)
    {
        painter->setPen(Qt::NoPen);
        painter->setBrush(Qt::green);
        painter->drawEllipse(boundingRect().center(), HNDLE_SIZE / 2, HNDLE_SIZE / 2);
    }
    else if(m_type==T_lineOut)
    {
        painter->setPen(Qt::NoPen);
        painter->setBrush(Qt::red);
        painter->drawEllipse(boundingRect().center(), HNDLE_SIZE / 2, HNDLE_SIZE / 2);
    }
}

void HandleRect::hoverEnterEvent(QGraphicsSceneHoverEvent* event)
{
    ItemControlHandle::hoverEnterEvent(event);
}

void HandleRect::hoverLeaveEvent(QGraphicsSceneHoverEvent* event)
{
    ItemControlHandle::hoverLeaveEvent(event);
}