TrainCamp_yanchaoyang_Two/IntegratedPlatform/mainwindow.cpp

#include "mainwindow.h"
#include "ui_mainwindow.h"
#include"hmiwidget.h"

MainWindow::MainWindow(QWidget *parent)
    : QMainWindow(parent)
    , ui(new Ui::MainWindow)
    ,canDrawCircle(false)
    ,canDrawRectangle(false)
{
    ui->setupUi(this);
    scene = new QGraphicsScene(this);
    ui->graphicsView_2->setScene(scene);

    connect(ui->treeWidget_2, &QTreeWidget::itemClicked, this, &MainWindow::onHmiItemClicked);
    ui-> graphicsView_2->viewport()->installEventFilter(this);

    addDockWidget(Qt::BottomDockWidgetArea, ui->dockWidget_3);//将dockWidget_3添加到主窗口的下方
    ui->treeWidget_2->topLevelItem(0)->setIcon(0, QIcon("C:/Users/admin/Desktop/灯泡.png"));
    ui->treeWidget_2->topLevelItem(1)->setIcon(0, QIcon("C:/Users/admin/Desktop/按钮.png"));
}

MainWindow::~MainWindow()
{
    delete ui;
}

void MainWindow::onHmiItemClicked(QTreeWidgetItem *item)
{
    if (item->text(0) == "指示灯")
    {
        canDrawCircle = true;
        canDrawRectangle = false;
    }
    else if(item->text(0) == "按钮")
    {
        canDrawCircle=false;
        canDrawRectangle = true;//如果点击的是按钮，则不允许绘制灯
    }
    else {
        canDrawRectangle = false;//如果点击的是灯，则不允许绘制按钮
        canDrawCircle = false;
    }
}
bool MainWindow::eventFilter(QObject *obj, QEvent *event)
{
    // 修正1：使用一致的视图对象名(graphicsView_2)
    if (obj != ui->graphicsView_2->viewport()) {
        return false; // 不是我们关心的对象，不处理
    }
    // 只处理鼠标按下事件
    if (event->type() == QEvent::MouseButtonPress) {
        QMouseEvent *mouseEvent = static_cast<QMouseEvent *>(event);
        if (mouseEvent->button() == Qt::LeftButton) {
            // 获取点击的场景坐标
            QPointF scenePos = ui->graphicsView_2->mapToScene(mouseEvent->pos());

            // 根据标志绘制元素
            if (canDrawCircle) {
                ResizableEllipse *circle = new ResizableEllipse(
                    scenePos.x(), scenePos.y(), 50, 50);
                circle->setBrush(QBrush(Qt::red)); // 设置指示灯颜色
                scene->addItem(circle);
            }
            else if (canDrawRectangle) {
                ResizableRectangle *rectangle = new ResizableRectangle(
                    scenePos.x(), scenePos.y(), 100, 50);
                rectangle->setBrush(QBrush(Qt::yellow)); // 设置按钮颜色
                scene->addItem(rectangle);
            }

            // 重置绘制标志
            canDrawCircle = false;
            canDrawRectangle = false;

            // 修正2：使用一致的树控件对象名(treeWidget_2)
            if (ui->treeWidget_2->currentItem()) {
                ui->treeWidget_2->currentItem()->setSelected(false);
            }

            return true; // 事件已处理
        }
    }
    // 修正3：正确处理未过滤的事件
    return QMainWindow::eventFilter(obj, event);
}