151 lines
4.0 KiB
C++
151 lines
4.0 KiB
C++
#include "graphicsItem/graphicsBaseItem.h"
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GraphicsBaseItem::GraphicsBaseItem(QGraphicsItem *parent)
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:QGraphicsItem(parent)
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{
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//初始化缩放操作用的handle
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m_vecHanle.reserve(H_left);
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for(int i = H_leftTop; i <= H_left; i++)
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{
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ItemControlHandle* pHandle = new ItemControlHandle(this);
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pHandle->setType(T_resize);
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pHandle->setTag(i);
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m_vecHanle.push_back(pHandle);
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}
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setFlag(QGraphicsItem::ItemIsMovable, true);
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setFlag(QGraphicsItem::ItemIsSelectable, true);
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setFlag(QGraphicsItem::ItemSendsGeometryChanges, true);
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setAcceptHoverEvents(true);
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}
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GraphicsBaseItem::~GraphicsBaseItem()
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{
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for (size_t i = 0; i < m_vecHanle.size(); i++)
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{
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ItemControlHandle* pHandle = m_vecHanle[i];
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if (pHandle)
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{
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delete pHandle;
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pHandle = nullptr;
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}
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}
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}
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void GraphicsBaseItem::setWidth(double width)
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{
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m_dWidth = width;
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updateCoordinate();
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}
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void GraphicsBaseItem::setHeight(double height)
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{
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m_dHeight = height;
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updateCoordinate();
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}
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QVariant GraphicsBaseItem::itemChange(QGraphicsItem::GraphicsItemChange change, const QVariant& value)
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{
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if (change == QGraphicsItem::ItemSelectedHasChanged)
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{
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QGraphicsItemGroup *group = dynamic_cast<QGraphicsItemGroup *>(parentItem());
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if(!group)
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setHandleVisible(value.toBool());
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else //在某一组群中，由组群展示是否选中，自身不做展示
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{
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setSelected(false);
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return QVariant::fromValue<bool>(false);
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}
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}
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return QGraphicsItem::itemChange(change, value);
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}
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void GraphicsBaseItem::contextMenuEvent(QGraphicsSceneContextMenuEvent* event)
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{
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Q_UNUSED(event);
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}
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void GraphicsBaseItem::setHandleVisible(bool visible)
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{
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for(auto it = m_vecHanle.begin(); it != m_vecHanle.end(); it++)
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{
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if(visible)
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(*it)->show();
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else
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(*it)->hide();
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}
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}
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QPointF GraphicsBaseItem::getSymmetricPointPos(int nHandle)
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{
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QPointF pt;
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//编号从1开始，因此下标需要-1
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switch (nHandle)
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{
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case H_leftTop:
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pt = m_vecHanle.at(H_rightBottom - 1)->pos();
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break;
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case H_top:
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pt = m_vecHanle.at(H_bottom - 1)->pos();
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break;
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case H_rightTop:
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pt = m_vecHanle.at(H_leftBottom - 1)->pos();
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break;
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case H_right:
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pt = m_vecHanle.at(H_left - 1)->pos();
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break;
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case H_rightBottom:
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pt = m_vecHanle.at(H_leftTop - 1)->pos();
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break;
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case H_bottom:
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pt = m_vecHanle.at(H_top - 1)->pos();
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break;
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case H_leftBottom:
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pt = m_vecHanle.at(H_rightTop - 1)->pos();
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break;
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case H_left:
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pt = m_vecHanle.at(H_right - 1)->pos();
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break;
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default:
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break;
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}
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return pt;
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}
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void GraphicsBaseItem::updateHandles()
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{
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const QRectF& boundRect = this->boundingRect();
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for(auto it = m_vecHanle.begin(); it != m_vecHanle.end(); it++)
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{
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switch ((*it)->getTag()) {
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case H_leftTop:
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(*it)->move(boundRect.x(), boundRect.y());
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break;
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case H_top:
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(*it)->move(boundRect.x() + boundRect.width() * 0.5, boundRect.y());
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break;
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case H_rightTop:
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(*it)->move(boundRect.x() + boundRect.width(), boundRect.y());
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break;
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case H_right:
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(*it)->move(boundRect.x() + boundRect.width(), boundRect.y() + boundRect.height() * 0.5);
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break;
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case H_rightBottom:
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(*it)->move(boundRect.x() + boundRect.width(), boundRect.y() + boundRect.height());
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break;
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case H_bottom:
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(*it)->move(boundRect.x() + boundRect.width() * 0.5, boundRect.y() + boundRect.height());
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break;
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case H_leftBottom:
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(*it)->move(boundRect.x(), boundRect.y() + boundRect.height());
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break;
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case H_left:
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(*it)->move(boundRect.x(), boundRect.y() + boundRect.height() * 0.5);
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break;
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default:
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break;
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}
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}
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}
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