feat: 添加ElaWidgetTool库

ElaWidgetTools/ElaGraphicsLineItem.h

@@ -0,0 +1,33 @@
+#ifndef ELAGRAPHICSLINEITEM_H
+#define ELAGRAPHICSLINEITEM_H
+
+#include <QGraphicsPathItem>
+
+#include "ElaProperty.h"
+class ElaGraphicsItem;
+class ElaGraphicsLineItemPrivate;
+class ELA_EXPORT ElaGraphicsLineItem : public QGraphicsPathItem
+{
+    Q_Q_CREATE(ElaGraphicsLineItem)
+    Q_PRIVATE_CREATE_Q_H(QPointF, StartPoint);
+    Q_PRIVATE_CREATE_Q_H(QPointF, EndPoint);
+    Q_PRIVATE_CREATE_Q_H(ElaGraphicsItem*, StartItem);
+    Q_PRIVATE_CREATE_Q_H(ElaGraphicsItem*, EndItem);
+    Q_PRIVATE_CREATE_Q_H(int, StartItemPort);
+    Q_PRIVATE_CREATE_Q_H(int, EndItemPort);
+
+public:
+    explicit ElaGraphicsLineItem(ElaGraphicsItem* startItem, ElaGraphicsItem* endItem, int startItemPort, int endItemPort, QGraphicsItem* parent = nullptr);
+    explicit ElaGraphicsLineItem(QPointF startPoint, QPointF endPoint, QGraphicsItem* parent = nullptr);
+    ~ElaGraphicsLineItem();
+
+    bool isTargetLink(ElaGraphicsItem* item) const;
+    bool isTargetLink(ElaGraphicsItem* item1, ElaGraphicsItem* item2) const;
+    bool isTargetLink(ElaGraphicsItem* item1, ElaGraphicsItem* item2, int port1, int port2) const;
+
+protected:
+    void paint(QPainter* painter, const QStyleOptionGraphicsItem* option, QWidget* widget = nullptr) override;
+    QRectF boundingRect() const override;
+};
+
+#endif // ELAGRAPHICSLINEITEM_H