比较指令的状态改变

coil.cpp

@@ -11,10 +11,10 @@ void Coil::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWid
 {
         painter->setRenderHint(QPainter::Antialiasing);
 
-        if (registerValue_ > 0) {
+        if (state()) {
             painter->setBrush(Qt::green); // 激活状态
         } else {
-            painter->setBrush(Qt::black); // 未激活状态
+            painter->setBrush(Qt::white); // 未激活状态
         }
         if (type_ == "线圈") {
             // 绘制线圈样式: 两边线段+中间椭圆

comparator.cpp

@@ -1,4 +1,5 @@
 #include "comparator.h"
+#include <QMenu>
 #include <QPainter>
 #include <QStyleOptionGraphicsItem>
 
@@ -15,10 +16,15 @@ QRectF Comparator::boundingRect() const
 void Comparator::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *)
 {
     painter->setRenderHint(QPainter::Antialiasing);
+    if (state()) {
+        painter->setBrush(Qt::green); // 激活状态
+    } else {
+        painter->setBrush(Qt::white); // 未激活状态
+    }
     if (type_ == "比较") {
         painter->drawRect(QRectF(-12, -8, 24, 16));
         painter->setFont(QFont("Arial", 8));
-        painter->drawText(QRectF(-10, -8, 20, 16), Qt::AlignCenter, "CP");
+        painter->drawText(QRectF(-10, -8, 20, 16), Qt::AlignCenter, compare_);
 
         // 锚点
         painter->setBrush(Qt::darkGray);
@@ -75,3 +81,40 @@ void Comparator::setRegisterValue(const QString &registerId, quint16 value)
         update(); // 触发重绘
     }
 }
+
+void Comparator::addMenuActions(QMenu *menu)
+{
+    menu->addAction("比较");
+}
+
+void Comparator::handleMenuAction(QAction *action)
+{
+    if (action->text() == "复制") {
+        emit requestCopy(this);
+    }
+    if (action->text() == "删除") {
+        emit requestDelete(this);
+    }
+    if (action->text() == "对象"){
+        emit requestBindRegister(this);
+    }
+    if (action->text() == "比较"){
+        emit requestCompare(this);
+    }
+}
+
+void Comparator::setCompare(QString compare)
+{
+    compare_ = compare;
+    update();
+}
+
+bool Comparator::state() const
+{
+    if (compare_ == ">") return registerValue_ > registerValue2_;
+    if (compare_ == "<") return registerValue_ < registerValue2_;
+    if (compare_ == "=") return registerValue_ == registerValue2_;
+    if (compare_ == ">=") return registerValue_ >= registerValue2_;
+    if (compare_ == "<") return registerValue_ <= registerValue2_;
+    return false;
+}

comparator.h

@@ -12,10 +12,15 @@ public:
                QWidget *) override;
     void setRegisterId(const QString &id) override;
     void setRegisterValue(const QString &registerId, quint16 value) override;
+    void addMenuActions(QMenu *menu) override;
+    void handleMenuAction(QAction *action) override;
+    void setCompare(QString) override;
+    bool state() const override;
 
 private:
     QString registerId2_;
     quint16 registerValue2_ = 0;
+    QString compare_ = "CP";
 };
 
 #endif // COMPARATOR_H

editor.pro.user

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!DOCTYPE QtCreatorProject>
-<!-- Written by QtCreator 4.11.1, 2025-08-09T09:34:13. -->
+<!-- Written by QtCreator 4.11.1, 2025-08-09T12:58:16. -->
 <qtcreator>
  <data>
   <variable>EnvironmentId</variable>

item.cpp

@@ -58,6 +58,11 @@ QString Item::itemType()
     return type_;
 }
 
+void Item::setRegisterId(const QString &id)
+{
+    registerId_ = id;
+}
+
 void Item::setRegisterValue(const QString &registerId, quint16 value)
 {
     if (registerId_ == registerId)

item.h

@@ -26,6 +26,7 @@ public:
     virtual void setRegisterValue(const QString& registerId, quint16 value);
     quint16 registerValue() const { return registerValue_; }
 
+    virtual void setCompare(QString) {}
 
     // 添加状态属性（用于线圈、触点等）
     virtual bool state() const { return false; }
@@ -35,9 +36,10 @@ signals:
     void requestCopy(Item*);
     void requestDelete(Item*);
     void requestBindRegister(Item*);
+    void requestCompare(Item*);
 
 protected:
-    virtual void MenuActions(QMenu *menu);
+    void MenuActions(QMenu *menu);
     virtual void addMenuActions(QMenu *menu);
     virtual void handleMenuAction(QAction *action);
     QVariant itemChange(GraphicsItemChange change, const QVariant &value) override;

item.h.autosave

@@ -0,0 +1,53 @@
+#ifndef ITEM_H
+#define ITEM_H
+
+#include <QGraphicsObject>
+#include <QColor>
+#include <QList>
+#include <QAction>
+
+class Connection;
+
+class Item : public QGraphicsObject
+{
+    Q_OBJECT
+public:
+    enum AnchorType { Left, Right };
+    explicit Item(const QString &type, QGraphicsItem *parent = nullptr);
+
+    QRectF boundingRect() const override;
+    QPointF anchorPos(AnchorType type) const;
+    void addConnection(Connection* conn);
+    void removeConnection(Connection* conn);
+    QList<Connection*> connections();
+    QString itemType();
+    virtual void setRegisterId(const QString& id);
+    QString registerId() const { return registerId_; }
+    virtual void setRegisterValue(const QString& registerId, quint16 value);
+    quint16 registerValue() const { return registerValue_; }
+
+    virtual void setCompare(QString) {}
+
+    // 添加状态属性（用于线圈、触点等）
+    virtual bool state() const { return false; }
+
+
+signals:
+    void requestCopy(Item*);
+    void requestDelete(Item*);
+    void requestBindRegister(Item*);
+    void requestCompare(Item*);
+
+protected:
+    void MenuActions(QMenu *menu);
+    virtual void addMenuActions(QMenu *menu);
+    virtual void handleMenuAction(QAction *action);
+    QVariant itemChange(GraphicsItemChange change, const QVariant &value) override;
+    void contextMenuEvent(QGraphicsSceneContextMenuEvent *event) override;
+    QString type_;
+    QList<Connection*> connections_;
+    QString registerId_;
+    quint16 registerValue_ = 0;
+};
+
+#endif // ITEM_H

mygraphicsview.cpp

@@ -50,6 +50,7 @@ void MyGraphicsView::dropEvent(QDropEvent *event)
     connect(item, &Item::requestCopy, this, &MyGraphicsView::onItemRequestCopy);
     connect(item, &Item::requestDelete, this, &MyGraphicsView::onItemRequestDelete);
     connect(item, &Item::requestBindRegister, this, &MyGraphicsView::onItemRequestBindRegister);
+    connect(item, &Item::requestCompare, this, &MyGraphicsView::onItemRequestCompare);
     scene()->addItem(item);
 
     event->acceptProposedAction();
@@ -209,6 +210,19 @@ void MyGraphicsView::onItemRequestBindRegister(Item *item)
     }
 }
 
+void MyGraphicsView::onItemRequestCompare(Item *item)
+{
+    if (!item) return;
+
+    QString compare = QInputDialog::getText(
+        this,
+        "绑定寄存器",
+        "格式:>、<、=、<=、>=",
+        QLineEdit::Normal
+    );
+    item->setCompare(compare);
+}
+
 void MyGraphicsView::mousePressEvent(QMouseEvent *event)
 {
     if (event->button() == Qt::LeftButton) {

mygraphicsview.h

@@ -48,6 +48,7 @@ public slots:
     void onItemRequestCopy(Item*);
     void onItemRequestDelete(Item*);
     void onItemRequestBindRegister(Item*);
+    void onItemRequestCompare(Item*);
 };
 
 #endif // MYGRAPHICSVIEW_H