比较指令可以绑定两个寄存器

coil.cpp

@@ -32,9 +32,6 @@ void Coil::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWid
             painter->save();
             painter->setFont(QFont("Arial", 8));
             painter->setPen(Qt::black);
-            // 在元件底部居中绘制寄存器ID
-//            painter->drawText(boundingRect().adjusted(0, 20, 0, 0),
-//                              Qt::AlignCenter, registerId_);
             QString text = QString("%1: %2").arg(registerId()).arg(registerValue_);
             painter->drawText(boundingRect(), Qt::AlignBottom | Qt::AlignHCenter, text);
             painter->restore();

comparator.cpp

@@ -7,6 +7,11 @@ Comparator::Comparator(const QString &type) : Item(type)
 
 }
 
+QRectF Comparator::boundingRect() const
+{
+    return QRectF(-22, -20, 44, 40);
+}
+
 void Comparator::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *)
 {
     painter->setRenderHint(QPainter::Antialiasing);
@@ -21,15 +26,20 @@ void Comparator::paint(QPainter *painter, const QStyleOptionGraphicsItem *option
         painter->drawEllipse(QPointF(-18, 0), 4, 4);
         painter->drawEllipse(QPointF(18, 0), 4, 4);
     }
-    if (!registerId_.isEmpty()) {
         painter->save();
         painter->setFont(QFont("Arial", 8));
         painter->setPen(Qt::black);
-        // 在元件底部居中绘制寄存器ID
-        painter->drawText(boundingRect().adjusted(0, 20, 0, 0),
-                         Qt::AlignCenter, registerId_);
+        if (!registerId_.isEmpty()) {
+            QString text = QString("%1: %2").arg(registerId_).arg(registerValue_);
+            painter->drawText(QRectF(-20, -25, 40, 20), Qt::AlignCenter, text);
+        }
+
+        // 在右上角显示第二个寄存器
+        if (!registerId2_.isEmpty()) {
+            QString text = QString("%1: %2").arg(registerId2_).arg(registerValue2_);
+            painter->drawText(QRectF(-20, 5, 40, 20), Qt::AlignCenter, text);
+        }
         painter->restore();
-    }
     if (option->state & QStyle::State_Selected) {
         QPen pen(Qt::DashLine);
         pen.setColor(Qt::blue);
@@ -39,3 +49,29 @@ void Comparator::paint(QPainter *painter, const QStyleOptionGraphicsItem *option
         painter->drawRect(boundingRect());
     }
 }
+
+void Comparator::setRegisterId(const QString &id)
+{
+    if (registerId_.isEmpty())
+    {
+        registerId_ = id;
+    }
+    else if(registerId2_.isEmpty())
+    {
+        registerId2_ = id;
+    }
+}
+
+void Comparator::setRegisterValue(const QString &registerId, quint16 value)
+{
+    if (registerId_ == registerId)
+    {
+        registerValue_ = value;
+        update(); // 触发重绘
+    }
+    if (registerId2_ == registerId)
+    {
+        registerValue2_ = value;
+        update(); // 触发重绘
+    }
+}

comparator.h

@@ -6,9 +6,16 @@ class Comparator : public Item
 {
 public:
     Comparator(const QString &type);
+    QRectF boundingRect() const override;
     void paint(QPainter *painter,
                const QStyleOptionGraphicsItem *option,
                QWidget *) override;
+    void setRegisterId(const QString &id) override;
+    void setRegisterValue(const QString &registerId, quint16 value) override;
+
+private:
+    QString registerId2_;
+    quint16 registerValue2_ = 0;
 };
 
 #endif // COMPARATOR_H

item.cpp

@@ -58,10 +58,13 @@ QString Item::itemType()
     return type_;
 }
 
-void Item::setRegisterValue(quint16 value)
+void Item::setRegisterValue(const QString &registerId, quint16 value)
 {
-    registerValue_ = value;
-    update(); // 触发重绘
+    if (registerId_ == registerId)
+    {
+        registerValue_ = value;
+        update(); // 触发重绘
+    }
 }
 
 void Item::MenuActions(QMenu *menu)

item.h

@@ -21,9 +21,9 @@ public:
     void removeConnection(Connection* conn);
     QList<Connection*> connections();
     QString itemType();
-    void setRegisterId(const QString& id) { registerId_ = id; }
+    virtual void setRegisterId(const QString& id) { registerId_ = id; }
     QString registerId() const { return registerId_; }
-    void setRegisterValue(quint16 value);
+    virtual void setRegisterValue(const QString& registerId, quint16 value);
     quint16 registerValue() const { return registerValue_; }
 
 

registermanager.cpp

@@ -28,7 +28,7 @@ void RegisterManager::updateRegisterValue(const QString& registerId, quint16 val
 
     // 更新所有绑定该寄存器的图元
     for (Item* item : registerMap[registerId]) {
-        item->setRegisterValue(value);
+        item->setRegisterValue(registerId, value);
         item->update(); // 刷新显示
     }
 }