实现新增删除页面的功能，并且删除页面后新建时能优先新建刚刚删除的页数

customgraphics.cpp

@@ -82,35 +82,38 @@ void HmiComponent::contextMenuEvent(QGraphicsSceneContextMenuEvent *event)
 
 
 // HmiButton 类实现
-
-HmiButton::HmiButton(QGraphicsItem *parent) : HmiComponent(parent) {
+HmiButton::HmiButton(QGraphicsItem *parent) : HmiComponent(parent)
+{
     m_color = Qt::gray;
     m_componentName = "Button";
 }
 
-QRectF HmiButton::boundingRect() const {
-    return QRectF(0, 0, 80, 30);
+QRectF HmiButton::boundingRect() const
+{
+    return QRectF(0, 0, 65, 30);
 }
 
-void HmiButton::paintShape(QPainter *painter) {
+void HmiButton::paintShape(QPainter *painter)
+{
     painter->setPen(Qt::NoPen);
     painter->setBrush(m_color);
     painter->drawRect(boundingRect());
 }
 
-
 // HmiIndicator 类实现
-
-HmiIndicator::HmiIndicator(QGraphicsItem *parent) : HmiComponent(parent) {
+HmiIndicator::HmiIndicator(QGraphicsItem *parent) : HmiComponent(parent)
+{
     m_color = Qt::green;
     m_componentName = "Indicator";
 }
 
-QRectF HmiIndicator::boundingRect() const {
+QRectF HmiIndicator::boundingRect() const
+{
     return QRectF(0, 0, 30, 30);
 }
 
-void HmiIndicator::paintShape(QPainter *painter) {
+void HmiIndicator::paintShape(QPainter *painter)
+{
     painter->setPen(Qt::NoPen);
     painter->setBrush(m_color);
     painter->drawEllipse(boundingRect());

hmimodule.cpp

@@ -1,14 +1,16 @@
 #include "hmimodule.h"
 #include <QGraphicsScene>
-#include <QGraphicsView> // --- 确保包含 QGraphicsView 头文件 ---
+#include <QGraphicsView>
 #include <QDateTime>
+#include <QTabWidget>
+#include <QMessageBox>
+#include <QVBoxLayout>
+#include <algorithm> // 引入 std::sort
 
-// HMIModule 构造函数无需改动
 HMIModule::HMIModule(Ui::MainWindow* ui, QObject *parent)
     : QObject{parent}, ui_(ui), m_scene(nullptr)
 {}
 
-// 封装设置图标和大小的通用函数
 void HMIModule::setButtonIcon(QAbstractButton *button, const QString &iconPath)
 {
     button->setIcon(QIcon(iconPath));
@@ -24,7 +26,6 @@ void HMIModule::init() {
     setButtonIcon(ui_->nextPage, ":/resource/image/next.png");
 
     if (!ui_->hmiGraphicsView->scene()) {
-        // 创建场景时，将 view 指针传入
         m_scene = new CustomGraphicsScene(ui_->hmiGraphicsView, this);
         m_scene->setSceneRect(0, 0, 800, 600);
         ui_->hmiGraphicsView->setScene(m_scene);
@@ -36,22 +37,25 @@ void HMIModule::init() {
     connect(ui_->button, &QPushButton::clicked, this, &HMIModule::prepareToCreateButton);
     connect(ui_->lamp, &QPushButton::clicked, this, &HMIModule::prepareToCreateIndicator);
     connect(m_scene, &CustomGraphicsScene::componentCreated, this, &HMIModule::onComponentCreated);
-    // 连接来自场景的键盘事件信号
     connect(m_scene, &CustomGraphicsScene::copyRequestFromScene, this, &HMIModule::onCopyRequested);
     connect(m_scene, &CustomGraphicsScene::pasteRequestFromScene, this, &HMIModule::onPasteRequested);
     connect(m_scene, &CustomGraphicsScene::deleteRequestFromScene, this, &HMIModule::onDeleteRequested);
+
+    // 连接新增的槽函数
+    connect(ui_->addPage, &QPushButton::clicked, this, &HMIModule::addPage);
+    connect(ui_->deletePage, &QPushButton::clicked, this, &HMIModule::deletePage);
+    connect(ui_->prePage, &QPushButton::clicked, this, &HMIModule::prePage);
+    connect(ui_->nextPage, &QPushButton::clicked, this, &HMIModule::nextPage);
 }
-// 辅助函数，用于设置新创建的组件
+
 void HMIModule::setupNewComponent(HmiComponent* item)
 {
     if (!item) return;
 
-    // 连接所有需要的信号
     connect(item, &HmiComponent::selected, this, &HMIModule::onComponentSelected);
     connect(item, &HmiComponent::copyRequested, this, &HMIModule::onCopyRequested);
     connect(item, &HmiComponent::deleteRequested, this, &HMIModule::onDeleteRequested);
 
-    // 生成日志
     QString currentTime = QDateTime::currentDateTime().toString("yyyy-MM-dd hh:mm:ss");
     QString log = QString("[%1] 创建 %2 组件")
                       .arg(currentTime)
@@ -59,21 +63,18 @@ void HMIModule::setupNewComponent(HmiComponent* item)
     emit logMessageGenerated(log);
 }
 
-// 准备创建按钮的槽函数
 void HMIModule::prepareToCreateButton()
 {
     m_scene->setComponentTypeToCreate(ComponentType::Button);
     m_scene->setMode(CustomGraphicsScene::Mode::CreateItem);
 }
 
-// 准备创建指示灯的槽函数
 void HMIModule::prepareToCreateIndicator()
 {
     m_scene->setComponentTypeToCreate(ComponentType::Indicator);
     m_scene->setMode(CustomGraphicsScene::Mode::CreateItem);
 }
 
-// 处理新创建组件的槽函数
 void HMIModule::onComponentCreated(HmiComponent* item)
 {
     setupNewComponent(item);
@@ -84,11 +85,9 @@ void HMIModule::onCopyRequested()
     QList<QGraphicsItem*> selected = m_scene->selectedItems();
     if (selected.isEmpty()) return;
 
-    // 只复制第一个选中的项目
     HmiComponent* itemToCopy = qgraphicsitem_cast<HmiComponent*>(selected.first());
     if (!itemToCopy) return;
 
-    // 存储组件信息到 "剪贴板"
     if (dynamic_cast<HmiButton*>(itemToCopy)) {
         m_copiedType = ComponentType::Button;
     } else if (dynamic_cast<HmiIndicator*>(itemToCopy)) {
@@ -97,7 +96,6 @@ void HMIModule::onCopyRequested()
     m_copiedColor = itemToCopy->color();
     m_hasCopiedItem = true;
 
-    // 日志
     emit logMessageGenerated(QString("[%1] 复制组件: %2")
                                  .arg(QDateTime::currentDateTime().toString("yyyy-MM-dd hh:mm:ss"))
                                  .arg(itemToCopy->componentName()));
@@ -116,12 +114,8 @@ void HMIModule::onPasteRequested(const QPointF& scenePos)
 
     if (newItem) {
         newItem->setColor(m_copiedColor);
-        // 为了避免完全重叠，给一个小的偏移量
         newItem->setPos(scenePos);
         m_scene->addItem(newItem);
-
-        // 使用辅助函数完成添加和信号连接
-        // 注意：setupNewComponent内部会再次生成“创建”日志，这里是合理的
         setupNewComponent(newItem);
     }
 }
@@ -131,25 +125,111 @@ void HMIModule::onDeleteRequested()
     QList<QGraphicsItem*> selected = m_scene->selectedItems();
     if (selected.isEmpty()) return;
 
-    // 日志
     emit logMessageGenerated(QString("[%1] 删除 %2 个组件")
                                  .arg(QDateTime::currentDateTime().toString("yyyy-MM-dd hh:mm:ss"))
                                  .arg(selected.count()));
 
-    // 从后往前删，避免迭代器失效问题
     for (int i = selected.count() - 1; i >= 0; --i) {
         QGraphicsItem* item = selected.at(i);
         m_scene->removeItem(item);
-        delete item; // 释放内存
+        delete item;
     }
 }
 
-// 统一处理选中事件的槽函数，无需修改
 void HMIModule::onComponentSelected(HmiComponent* item)
 {
-    // if (item) {
-    //     qDebug() << "Component selected:" << item->componentName()
-    //     << "Color:" << item->color();
-    //     // 未来可以在这里将item对象传递给属性编辑器
-    // }
+}
+
+// 新增页面的槽函数
+void HMIModule::addPage()
+{
+    QTabWidget* tabWidget = ui_->tabWidget_2; // 获取TabWidget
+    int pageNumber;
+
+    // 检查是否有可用的页面编号
+    if (!m_availablePageNumbers.isEmpty()) {
+        // 获取最小的可用的页面编号 (QList 已经是有序的)
+        pageNumber = m_availablePageNumbers.first();
+        m_availablePageNumbers.removeFirst();
+    } else {
+        // 如果没有可用的页面编号，则使用 m_pageCount 并递增
+        pageNumber = ++m_pageCount;
+    }
+
+    // 创建新的页面部件
+    QWidget* newPage = new QWidget(tabWidget);
+    QString pageName = QString("Page %1").arg(pageNumber);
+    newPage->setObjectName(pageName);
+
+    // 创建新的 GraphicsView 和 Scene
+    QGraphicsView* newGraphicsView = new QGraphicsView(newPage);
+    CustomGraphicsScene* newScene = new CustomGraphicsScene(newGraphicsView, this);
+    newScene->setSceneRect(0, 0, 800, 600);
+    newGraphicsView->setScene(newScene);
+
+    // 布局
+    QVBoxLayout* layout = new QVBoxLayout(newPage);
+    layout->addWidget(newGraphicsView);
+    newPage->setLayout(layout);
+
+    // 添加到 TabWidget
+    tabWidget->addTab(newPage, pageName);
+    tabWidget->setCurrentWidget(newPage);
+
+    //记录日志
+    emit logMessageGenerated(QString("[%1] 添加页面: %2").arg(QDateTime::currentDateTime().toString("yyyy-MM-dd hh:mm:ss")).arg(pageName));
+}
+
+// 删除页面的槽函数
+void HMIModule::deletePage()
+{
+    QTabWidget* tabWidget = ui_->tabWidget_2;
+    int currentIndex = tabWidget->currentIndex();
+
+    if (tabWidget->count() == 1) {
+        QMessageBox::information(nullptr, "提示", "这是最后一页，不能删除！");
+        return;
+    }
+
+    if (currentIndex >= 0) {
+        // 获取要删除的页面
+        QWidget* currentPage = tabWidget->widget(currentIndex);
+        QString pageName = tabWidget->tabText(currentIndex);
+
+        // 从页面名称中提取页面编号
+        int pageNumber = pageName.remove("Page ").toInt();
+
+        // 将删除的页面编号添加到可用列表中，并保持列表有序
+        m_availablePageNumbers.append(pageNumber);
+        std::sort(m_availablePageNumbers.begin(), m_availablePageNumbers.end());
+
+        // 从 TabWidget 中移除页面
+        tabWidget->removeTab(currentIndex);
+
+        // 删除页面
+        delete currentPage;
+
+        // 记录日志
+        emit logMessageGenerated(QString("[%1] 删除页面: %2").arg(QDateTime::currentDateTime().toString("yyyy-MM-dd hh:mm:ss")).arg(pageName));
+    }
+}
+
+// 前一页的槽函数
+void HMIModule::prePage()
+{
+    QTabWidget* tabWidget = ui_->tabWidget_2;
+    int currentIndex = tabWidget->currentIndex();
+    if (currentIndex > 0) {
+        tabWidget->setCurrentIndex(currentIndex - 1);
+    }
+}
+
+// 后一页的槽函数
+void HMIModule::nextPage()
+{
+    QTabWidget* tabWidget = ui_->tabWidget_2;
+    int currentIndex = tabWidget->currentIndex();
+    if (currentIndex < tabWidget->count() - 1) {
+        tabWidget->setCurrentIndex(currentIndex + 1);
+    }
 }

hmimodule.h

@@ -3,8 +3,8 @@
 
 #include <QObject>
 #include "ui_MainWindow.h"
-// #include "customgraphics.h" // 已被 customgraphicsscene.h 包含
-#include "customgraphicsscene.h" // 引入新的场景头文件
+#include "customgraphicsscene.h"
+#include <QList> // 引入 QList
 
 class HMIModule : public QObject
 {
@@ -15,21 +15,20 @@ public:
     void init();
 
 private slots:
-    // 准备创建组件，而不是直接创建
     void prepareToCreateButton();
     void prepareToCreateIndicator();
-
-    // 当场景创建了一个组件后，进行后续处理
     void onComponentCreated(HmiComponent* item);
-
     void onComponentSelected(HmiComponent* item);
-
-    // 处理复制、粘贴、删除的槽函数
     void onCopyRequested();
     void onPasteRequested(const QPointF& scenePos);
     void onDeleteRequested();
 
-    // 一个用于发送日志消息的信号
+    // 新增的槽函数
+    void addPage();
+    void deletePage();
+    void prePage();
+    void nextPage();
+
 signals:
     void logMessageGenerated(const QString& message);
 
@@ -39,11 +38,11 @@ private:
 private:
     Ui::MainWindow* ui_;
     CustomGraphicsScene* m_scene;
-
-    // 用于实现剪贴板功能的成员变量
     ComponentType m_copiedType;
     QColor m_copiedColor;
     bool m_hasCopiedItem = false;
+    int m_pageCount = 1; // 初始化页面计数器
+    QList<int> m_availablePageNumbers; // 用于存储可用的页面编号 (有序列表)
 };
 
 #endif // HMIMODULE_H