重置元件所绑定的寄存器

comparator.cpp

@@ -56,16 +56,19 @@ void Comparator::paint(QPainter *painter, const QStyleOptionGraphicsItem *option
     }
 }
 
-void Comparator::setRegisterId(const QString &id)
+bool Comparator::setRegisterId(const QString &id)
 {
     if (registerId_.isEmpty())
     {
         registerId_ = id;
+        return true;
     }
     else if(registerId2_.isEmpty())
     {
         registerId2_ = id;
+        return true;
     }
+    return false;
 }
 
 void Comparator::setRegisterValue(const QString &registerId, quint16 value)
@@ -101,6 +104,9 @@ void Comparator::handleMenuAction(QAction *action)
     if (action->text() == "比较"){
         emit requestCompare(this);
     }
+    if (action->text() == "重置") {
+        emit requestReset(this);
+    }
 }
 
 void Comparator::setCompare(QString compare)
@@ -118,3 +124,27 @@ bool Comparator::state() const
     if (compare_ == "<") return registerValue_ <= registerValue2_;
     return false;
 }
+
+QStringList Comparator::resetRegister()
+{
+    QStringList unboundRegs;
+
+    // 重置第一个寄存器
+    if (!registerId_.isEmpty()) {
+        unboundRegs << registerId_;
+        registerId_.clear();
+    }
+
+    // 重置第二个寄存器
+    if (!registerId2_.isEmpty()) {
+        unboundRegs << registerId2_;
+        registerId2_.clear();
+    }
+
+    // 清除寄存器值
+    registerValue_ = 0;
+    registerValue2_ = 0;
+
+    update(); // 刷新显示
+    return unboundRegs;
+}

comparator.h

@@ -10,12 +10,13 @@ public:
     void paint(QPainter *painter,
                const QStyleOptionGraphicsItem *option,
                QWidget *) override;
-    void setRegisterId(const QString &id) override;
+    bool 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;
+    QStringList resetRegister() override;
 
 private:
     QString registerId2_;

item.cpp

@@ -58,9 +58,14 @@ QString Item::itemType()
     return type_;
 }
 
-void Item::setRegisterId(const QString &id)
+bool Item::setRegisterId(const QString &id)
 {
-    registerId_ = id;
+    if(registerId_.isEmpty())
+    {
+        registerId_ = id;
+        return true;
+    }
+    return false;
 }
 
 void Item::setRegisterValue(const QString &registerId, quint16 value)
@@ -72,11 +77,24 @@ void Item::setRegisterValue(const QString &registerId, quint16 value)
     }
 }
 
+QStringList Item::resetRegister()
+{
+    QStringList unboundRegs;
+    if (!registerId_.isEmpty()) {
+        unboundRegs << registerId_;
+        registerId_.clear();
+        registerValue_ = 0;
+        update();
+    }
+    return unboundRegs;
+}
+
 void Item::MenuActions(QMenu *menu)
 {
     menu->addAction("复制");
     menu->addAction("删除");
     menu->addAction("对象");
+    menu->addAction("重置");
 }
 
 void Item::addMenuActions(QMenu *menu)
@@ -95,6 +113,9 @@ void Item::handleMenuAction(QAction *action)
     if (action->text() == "对象"){
         emit requestBindRegister(this);
     }
+    if (action->text() == "重置"){
+        emit requestReset(this);
+    }
 }
 
 QVariant Item::itemChange(GraphicsItemChange change, const QVariant &value)

item.h

@@ -21,10 +21,11 @@ public:
     void removeConnection(Connection* conn);
     QList<Connection*> connections();
     QString itemType();
-    virtual void setRegisterId(const QString& id) { registerId_ = id; }
+    virtual bool setRegisterId(const QString& id);
     QString registerId() const { return registerId_; }
     virtual void setRegisterValue(const QString& registerId, quint16 value);
     quint16 registerValue() const { return registerValue_; }
+    virtual QStringList resetRegister();
 
     virtual void setCompare(QString) {}
 
@@ -37,6 +38,7 @@ signals:
     void requestDelete(Item*);
     void requestBindRegister(Item*);
     void requestCompare(Item*);
+    void requestReset(Item*);
 
 protected:
     void MenuActions(QMenu *menu);

item.h.autosave

@@ -1,53 +0,0 @@
-#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

@@ -51,6 +51,7 @@ void MyGraphicsView::dropEvent(QDropEvent *event)
     connect(item, &Item::requestDelete, this, &MyGraphicsView::onItemRequestDelete);
     connect(item, &Item::requestBindRegister, this, &MyGraphicsView::onItemRequestBindRegister);
     connect(item, &Item::requestCompare, this, &MyGraphicsView::onItemRequestCompare);
+    connect(item, &Item::requestReset, this, &MyGraphicsView::onItemRequestReset);
     scene()->addItem(item);
 
     event->acceptProposedAction();
@@ -98,6 +99,8 @@ void MyGraphicsView::keyPressEvent(QKeyEvent *event)
             connect(newItem, &Item::requestCopy, this, &MyGraphicsView::onItemRequestCopy);
             connect(newItem, &Item::requestDelete, this, &MyGraphicsView::onItemRequestDelete);
             connect(newItem, &Item::requestBindRegister, this, &MyGraphicsView::onItemRequestBindRegister);
+            connect(newItem, &Item::requestCompare, this, &MyGraphicsView::onItemRequestCompare);
+            connect(newItem, &Item::requestReset, this, &MyGraphicsView::onItemRequestReset);
             scene()->addItem(newItem);
         }
     } else {
@@ -119,6 +122,8 @@ void MyGraphicsView::contextMenuEvent(QContextMenuEvent *event)
             connect(newItem, &Item::requestCopy, this, &MyGraphicsView::onItemRequestCopy);
             connect(newItem, &Item::requestDelete, this, &MyGraphicsView::onItemRequestDelete);
             connect(newItem, &Item::requestBindRegister, this, &MyGraphicsView::onItemRequestBindRegister);
+            connect(newItem, &Item::requestCompare, this, &MyGraphicsView::onItemRequestCompare);
+            connect(newItem, &Item::requestReset, this, &MyGraphicsView::onItemRequestReset);
             scene()->addItem(newItem);
         }
     } else {
@@ -202,11 +207,16 @@ void MyGraphicsView::onItemRequestBindRegister(Item *item)
         // 标准化格式 (D100)
         QString newReg = QString("%1%2").arg(reg[0].toUpper()).arg(address);
 
-        item->setRegisterId(newReg);
-        item->update();
-
-        // 发出绑定信号
-        emit itemBoundToRegister(item, newReg);
+        if (item->setRegisterId(newReg))
+        {
+            item->update();
+            // 发出绑定信号
+            emit itemBoundToRegister(item, newReg);
+        }
+        else
+        {
+            QMessageBox::warning(this, "提示", "请先重置再绑定新的寄存器");
+        }
     }
 }
 
@@ -223,6 +233,14 @@ void MyGraphicsView::onItemRequestCompare(Item *item)
     item->setCompare(compare);
 }
 
+void MyGraphicsView::onItemRequestReset(Item *item)
+{
+    QStringList unboundRegs = item->resetRegister();
+    for (const QString& reg : unboundRegs) {
+        emit itemResetRegister(item, reg); // 解绑每个寄存器
+    }
+}
+
 void MyGraphicsView::mousePressEvent(QMouseEvent *event)
 {
     if (event->button() == Qt::LeftButton) {

mygraphicsview.h

@@ -30,6 +30,7 @@ protected:
 
 signals:
     void itemBoundToRegister(Item*, QString);
+    void itemResetRegister(Item*, QString);
 
 private:
     Item* anchorItemAt(const QPoint& viewPos, Item::AnchorType& anchorType);
@@ -49,6 +50,7 @@ public slots:
     void onItemRequestDelete(Item*);
     void onItemRequestBindRegister(Item*);
     void onItemRequestCompare(Item*);
+    void onItemRequestReset(Item*);
 };
 
 #endif // MYGRAPHICSVIEW_H

plc.cpp

@@ -41,6 +41,8 @@ PLC::PLC(RegisterManager *regManager, QWidget *parent) :
 //            this, &PLC::handleModbusError);
     connect(ui->graphicsView, &MyGraphicsView::itemBoundToRegister,
             registerManager, &RegisterManager::bindItem);
+    connect(ui->graphicsView, &MyGraphicsView::itemResetRegister,
+            registerManager, &RegisterManager::unbindItem);
 //    connect(this, &PLC::requestWriteRegister,
 //            modbusManager, &ModbusManager::writeRegister);
 }

registermanager.cpp

@@ -22,6 +22,23 @@ void RegisterManager::bindItem(Item* item, const QString& registerId)
     });
 }
 
+void RegisterManager::unbindItem(Item *item, const QString &registerId)
+{
+    if (registerMap.contains(registerId)) {
+        // 从寄存器映射中移除元件
+        QList<Item*>& items = registerMap[registerId];
+        items.removeAll(item);
+
+        // 如果列表为空则移除整个条目
+        if (items.isEmpty()) {
+            registerMap.remove(registerId);
+        }
+
+        // 断开该寄存器的销毁信号连接
+        disconnect(item, &Item::destroyed, this, nullptr);
+    }
+}
+
 void RegisterManager::updateRegisterValue(const QString& registerId, quint16 value)
 {
     if (!registerMap.contains(registerId)) return;

registermanager.h

@@ -12,6 +12,7 @@ public:
 
     // 注册图元与寄存器绑定关系
     void bindItem(Item* item, const QString& registerId);
+    void unbindItem(Item* item, const QString& registerId);
 
     // 更新寄存器值
     void updateRegisterValue(const QString& registerId, quint16 value);