完善文件保存功能

coil.cpp

@@ -23,12 +23,21 @@ void Coil::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWid
             painter->drawEllipse(QPointF(-12, 0), 4, 4);   // 左锚点
             painter->drawEllipse(QPointF(12, 0), 4, 4);    // 右锚点
         }
-            if (option->state & QStyle::State_Selected) {
-                QPen pen(Qt::DashLine);
-                pen.setColor(Qt::blue);
-                pen.setWidth(2);
-                painter->setPen(pen);
-                painter->setBrush(Qt::NoBrush);
-                painter->drawRect(boundingRect());
-            }
+        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_);
+            painter->restore();
+        }
+        if (option->state & QStyle::State_Selected) {
+            QPen pen(Qt::DashLine);
+            pen.setColor(Qt::blue);
+            pen.setWidth(2);
+            painter->setPen(pen);
+            painter->setBrush(Qt::NoBrush);
+            painter->drawRect(boundingRect());
+        }
 }

comparator.cpp

@@ -21,6 +21,15 @@ 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_);
+        painter->restore();
+    }
     if (option->state & QStyle::State_Selected) {
         QPen pen(Qt::DashLine);
         pen.setColor(Qt::blue);

contact.cpp

@@ -35,12 +35,22 @@ void Contact::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, Q
         painter->drawEllipse(QPointF(-18, 0), 4, 4);   // 左
         painter->drawEllipse(QPointF(18, 0), 4, 4);    // 右
     }
-      if (option->state & QStyle::State_Selected) {
-            QPen pen(Qt::DashLine);
-            pen.setColor(Qt::blue);
-            pen.setWidth(2);
-            painter->setPen(pen);
-            painter->setBrush(Qt::NoBrush);
-            painter->drawRect(boundingRect());
-        }
+
+    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_);
+        painter->restore();
+    }
+    if (option->state & QStyle::State_Selected) {
+        QPen pen(Qt::DashLine);
+        pen.setColor(Qt::blue);
+        pen.setWidth(2);
+        painter->setPen(pen);
+        painter->setBrush(Qt::NoBrush);
+        painter->drawRect(boundingRect());
+    }
 }

editor.pro.user

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!DOCTYPE QtCreatorProject>
-<!-- Written by QtCreator 4.11.1, 2025-08-07T18:51:27. -->
+<!-- Written by QtCreator 4.11.1, 2025-08-07T20:13:11. -->
 <qtcreator>
  <data>
   <variable>EnvironmentId</variable>

hmi.cpp

@@ -113,19 +113,13 @@ void HMI::applyProjectToScene(const Project& proj)
         Item* item = creatItem(d.type);
         if (!item) continue;
         item->setPos(d.x, d.y);
+        item->setRegisterId(d.registerId);
         connect(item, &Item::requestCopy, ui->graphicsView, &MyGraphicsView::onItemRequestCopy);
         connect(item, &Item::requestDelete, ui->graphicsView, &MyGraphicsView::onItemRequestDelete);
+        connect(item, &Item::requestBindRegister, ui->graphicsView, &MyGraphicsView::onItemRequestBindRegister);
         hmi_scene_->addItem(item);
         itemObjs.append(item);
     }
-//    for (const auto& c : proj.connections_) {
-//        if (c.from >= 0 && c.from < itemObjs.size() && c.to >= 0 && c.to < itemObjs.size()) {
-//            Connection* conn = new Connection(
-//                itemObjs[c.from], static_cast<Item::AnchorType>(c.fromType),
-//                itemObjs[c.to], static_cast<Item::AnchorType>(c.toType));
-//            hmi_scene_->addItem(conn);
-//        }
-//    }
 }
 
 void HMI::extractSceneToProject(Project& proj)
@@ -142,6 +136,7 @@ void HMI::extractSceneToProject(Project& proj)
         d.type = it->itemType();
         d.x = it->pos().x();
         d.y = it->pos().y();
+        d.registerId = it->registerId();
         proj.items_.append(d);
     }
     for (QGraphicsItem* gi : hmi_scene_->items()) {

item.cpp

@@ -6,7 +6,7 @@
 #include <QGraphicsSceneContextMenuEvent>
 
 Item::Item(const QString &type, QGraphicsItem *parent)
-    : QGraphicsObject(parent), type_(type)
+    : QGraphicsObject(parent), type_(type), registerId_("")
 {
     setFlags(QGraphicsItem::ItemIsMovable |
              QGraphicsItem::ItemIsSelectable |
@@ -15,7 +15,7 @@ Item::Item(const QString &type, QGraphicsItem *parent)
 
 QRectF Item::boundingRect() const
 {
-    return QRectF(-22, -15, 44, 30);
+    return QRectF(-22, -12, 44, 32);
 }
 
 QPointF Item::anchorPos(AnchorType type) const

mygraphicsview.cpp

@@ -167,13 +167,13 @@ void MyGraphicsView::onItemRequestBindRegister(Item *item)
 {
     bool ok = false;
     QString reg = QInputDialog::getText(this,
-                                        "寄存器", "编号:",
+                                        "寄存器",
+                                        "编号:",
                                         QLineEdit::Normal,
                                         item->registerId(),
                                         &ok);
     if (ok && !reg.isEmpty()) {
         item->setRegisterId(reg);
-        // 可选：在图元上显示寄存器编号
         item->update();
     }
 }

plc.cpp

@@ -118,6 +118,7 @@ void PLC::applyProjectToScene(const Project& proj)
         Item* item = creatItem(d.type);
         if (!item) continue;
         item->setPos(d.x, d.y);
+        item->setRegisterId(d.registerId);
         connect(item, &Item::requestCopy, ui->graphicsView, &MyGraphicsView::onItemRequestCopy);
         connect(item, &Item::requestDelete, ui->graphicsView, &MyGraphicsView::onItemRequestDelete);
         connect(item, &Item::requestBindRegister, ui->graphicsView, &MyGraphicsView::onItemRequestBindRegister);
@@ -150,6 +151,7 @@ void PLC::extractSceneToProject(Project& proj)
         d.type = it->itemType();
         d.x = it->pos().x();
         d.y = it->pos().y();
+        d.registerId = it->registerId();
         proj.items_.append(d);
     }
     // (3) 存连线数据
@@ -212,6 +214,7 @@ void PLC::btnInsertClicked()
        newItem->setPos(insertPos);
        connect(newItem, &Item::requestCopy, ui->graphicsView, &MyGraphicsView::onItemRequestCopy);
        connect(newItem, &Item::requestDelete, ui->graphicsView, &MyGraphicsView::onItemRequestDelete);
+       connect(newItem, &Item::requestBindRegister, ui->graphicsView, &MyGraphicsView::onItemRequestBindRegister);
        ui->graphicsView->scene()->addItem(newItem);
 
        // 5. 新建两条连线

project.cpp

@@ -12,6 +12,7 @@ bool Project::saveToFile(const QString& filePath) const {
         obj["type"] = item.type;
         obj["x"] = item.x;
         obj["y"] = item.y;
+        obj["registerId"] = item.registerId;
         itemsArray.append(obj);
     }
     root["items"] = itemsArray;
@@ -52,6 +53,7 @@ bool Project::loadFromFile(const QString& filePath) {
         d.type = obj["type"].toString();
         d.x = obj["x"].toDouble();
         d.y = obj["y"].toDouble();
+        d.registerId = obj.contains("registerId") ? obj["registerId"].toString() : "";
         items_.append(d);
     }
     QJsonArray connArray = root["connections"].toArray();

project.h

@@ -11,6 +11,7 @@ public:
     struct ItemData {
         QString type;
         double x, y;
+        QString registerId = "";
     };
     struct ConnectionData {
         int from, to;