前言

这篇博客针对<<VS+Qt+C++旅游景区地图导航>>编写代码，代码整洁，规则，易读。学习与应用推荐首选。

文章目录

一、所需工具软件

二、使用步骤

1. 引入库

2. 代码实现

3. 运行结果

三、在线协助

一、所需工具软件

1. VS, Qt

2. C++

二、使用步骤

1.引入库

#include "MainWindow.h"
#include<iostream>

#include<qDebug>
#include<QFile>
#include <QBitmap>
#include <QPainter>
#include<QImage>
#include<QPixmap>
#include <QGraphicsScene>
#include <QGraphicsView>
#include <QPointF>
#include <QLineF>

2. 代码实现

代码如下:

.h*************************************
#pragma once

#include <QtWidgets/QMainWindow>
#include "ui_MainWindow.h"

#include <qDebug>

class MainWindow : public QMainWindow
{
	Q_OBJECT

public:
	MainWindow(QWidget *parent = Q_NULLPTR);

protected:


private:
	Ui::MainWindowClass ui;

private slots:
	void OnSearch();
	void mapBackGround();
	void initStyleSheetTitle();
	void paintEvent(QPaintEvent* event);

	void initStyleSheetMapButton();
	void initStyleSheetButton();
	void initStyleSheetLabel();


};

.cpp********************************
MainWindow::MainWindow(QWidget *parent)
	: QMainWindow(parent)
{
	ui.setupUi(this);

	QObject::connect(ui.pushButton_7, SIGNAL(clicked()), this, SLOT(OnSearch()));
    ui.frame->setFrameStyle(QFrame::NoFrame);
    ui.frame_3->setFrameStyle(QFrame::NoFrame);
}


void MainWindow::mouseDoubleClickEvent(QMouseEvent* event)
{
    int x = pos.x();
    int y = pos.y();
    qDebug() << "Double clicked at (" << x << "," << y << ")";
}

void MainWindow::OnSearch()
{
	std::cout << "modelRun" << std::endl;

    QString startPos = ui.comboBox->currentText();
    QString endPos = ui.comboBox_2->currentText();
    qDebug() << "startPos: " << startPos;
    qDebug() << "endPos: " << endPos;

    if (startPos == QStringLiteral("孔子文化园") | startPos == QStringLiteral("碰碰车"))
    {
        qDebug() << QStringLiteral("孔子文化园") ;
        // 添加两个点坐标
        QPointF point1(165, 228);
        QPointF point2(271, 218);
        QPointF point3(310, 95);
        // 设置GraphicsView的大小
        ui.graphicsView->setRenderHint(QPainter::Antialiasing); // 设置抗锯齿渲染
        ui.graphicsView->setAlignment(Qt::AlignLeft | Qt::AlignTop); // 设置对齐方式
        ui.graphicsView->setResizeAnchor(QGraphicsView::AnchorUnderMouse); // 设置缩放锚点为鼠标位置
        ui.graphicsView->setDragMode(QGraphicsView::ScrollHandDrag); // 设置拖拽模式为滚动手势拖拽

        QPen pen(Qt::red); // 设置线条颜色为红色
        pen.setWidth(2);   // 设置线宽为2

        // 在graphicsView_2的坐标系下绘制圆
        int radius = 25;
        int borderWidth = 5; // 壁厚
        pen.setWidth(borderWidth); // 设置线宽
        scene->addEllipse(point1.x() - (radius - borderWidth),
            point1.y() - (radius - borderWidth),
            (radius - borderWidth) * 2,
            (radius - borderWidth) * 2,
            pen, QBrush(Qt::NoBrush));
        scene->addEllipse(point2.x() - (radius - borderWidth),
            point2.y() - (radius - borderWidth),
            (radius - borderWidth) * 2,
            (radius - borderWidth) * 2,
            pen, QBrush(Qt::NoBrush));
        scene->addEllipse(point3.x() - (radius - borderWidth),
            point3.y() - (radius - borderWidth),
            (radius - borderWidth) * 2,
            (radius - borderWidth) * 2,
            pen, QBrush(Qt::NoBrush));

        // 绘制线段
        scene->addLine(QLineF(point1, point2), pen);
        scene->addLine(QLineF(point2, point3), pen);
    }

}



void MainWindow::initStyleSheetTitle()
{

    QString cssStr = "./style/style_label_title.css";
    QFile file(cssStr);
    if (file.open(QFile::ReadOnly))
    {
        QString qss = QLatin1String(file.readAll());
        ui.label->setStyleSheet(qss);
        file.close();
    }
    else {
        qDebug() << "Failed to open CSS file: " << file.fileName();
    }

}

void MainWindow::mapBackGround()
{
    QString cssStr = "./style/style_frame_mapBG.css";
    QString qss;
    QFile file(cssStr);
    if (file.open(QFile::ReadOnly))
    {
        qss = QLatin1String(file.readAll());
        //ui.frame_2->setStyleSheet(qss);
        file.close();
    }
    else {
        qDebug() << "Failed to open CSS file: " << file.fileName();
    }
}

void MainWindow::initStyleSheetButton()
{

    QString cssStr = "./style/style_pushButton.css";
    QString qss;
    QFile file(cssStr);
    if (file.open(QFile::ReadOnly))
    {
        qss = QLatin1String(file.readAll());
        ui.pushButton_7->setStyleSheet(qss);
        file.close();
    }
    else {
        qDebug() << "Failed to open CSS file: " << file.fileName();
    }

}


void MainWindow::initStyleSheetMapButton()
{

    QString cssStr = "./style/style_pushButton_map.css";
    QString qss;
    QFile file(cssStr);
    if (file.open(QFile::ReadOnly))
    {
        qss = QLatin1String(file.readAll());
        //ui.pushButton_3->setStyleSheet(qss);
        //ui.pushButton_4->setStyleSheet(qss);
        //ui.pushButton_5->setStyleSheet(qss);
        //ui.pushButton_6->setStyleSheet(qss);
        file.close();
    }
    else {
        qDebug() << "Failed to open CSS file: " << file.fileName();
    }

}