102 lines
2.9 KiB
C++
102 lines
2.9 KiB
C++
#include "designerScene.h"
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#include "util/selectorManager.h"
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#include <QPainter>
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#include <QGraphicsSceneMouseEvent>
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DesignerScene::DesignerScene(QObject *parent)
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: QGraphicsScene(parent)
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{
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m_bGridVisible = true;
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m_pView = nullptr;
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}
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DesignerScene::~DesignerScene()
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{
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}
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void DesignerScene::drawBackground(QPainter* painter, const QRectF& rect)
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{
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QGraphicsScene::drawBackground(painter, rect);
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painter->fillRect(sceneRect(), Qt::white);
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if(!m_bGridVisible)
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return;
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QRectF sceneRect = this->sceneRect();
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QPen pen;
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pen.setBrush(Qt::darkCyan);//藏青色
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pen.setStyle(Qt::DashLine);
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pen.setWidthF(0.2);
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painter->setPen(pen);
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int nGridSpace = 20; //暂时写死
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//竖线
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for(int nX = sceneRect.left(); nX < sceneRect.right(); nX += nGridSpace)
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painter->drawLine(nX,sceneRect.top(),nX,sceneRect.bottom());
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//横线
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for(int nY = sceneRect.top(); nY < sceneRect.bottom(); nY += nGridSpace)
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painter->drawLine(sceneRect.left(),nY,sceneRect.right(),nY);
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//补齐最后两条
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painter->drawLine(sceneRect.right(), sceneRect.top(), sceneRect.right(), sceneRect.bottom());
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painter->drawLine(sceneRect.left(), sceneRect.bottom(), sceneRect.right(), sceneRect.bottom());
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}
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void DesignerScene::mousePressEvent(QGraphicsSceneMouseEvent* mouseEvent)
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{
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if(SelectorManager::getInstance())
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{
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SelectorManager::getInstance()->getWorkingSelector()->mousePressEvent(mouseEvent, this);
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update();
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}
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else
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QGraphicsScene::mousePressEvent(mouseEvent);
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}
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void DesignerScene::mouseMoveEvent(QGraphicsSceneMouseEvent* mouseEvent)
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{
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if(SelectorManager::getInstance())
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{
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SelectorManager::getInstance()->getWorkingSelector()->mouseMoveEvent(mouseEvent, this);
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update();
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}
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else
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QGraphicsScene::mouseMoveEvent(mouseEvent);
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}
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void DesignerScene::mouseReleaseEvent(QGraphicsSceneMouseEvent* mouseEvent)
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{
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if(SelectorManager::getInstance())
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{
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SelectorManager::getInstance()->getWorkingSelector()->mouseReleaseEvent(mouseEvent, this);
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update();
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}
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else
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QGraphicsScene::mouseReleaseEvent(mouseEvent);
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}
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void DesignerScene::setGridVisible(bool bVisible)
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{
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m_bGridVisible = bVisible;
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update();
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}
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void DesignerScene::callParentEvent(QGraphicsSceneMouseEvent* mouseEvent)
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{
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//调用QGraphicsScene的函数，会直接触发一些操作，比如取消item的selected状态，从而触发item的一些函数（itemChange）,然后在item的相应函数中书写执行一些操作
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switch (mouseEvent->type())
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{
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case QEvent::GraphicsSceneMousePress:
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QGraphicsScene::mousePressEvent(mouseEvent);
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break;
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case QEvent::GraphicsSceneMouseMove:
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QGraphicsScene::mouseMoveEvent(mouseEvent);
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break;
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case QEvent::GraphicsSceneMouseRelease:
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QGraphicsScene::mouseReleaseEvent(mouseEvent);
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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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