Qt - 驾校科目-考试系统-布局题库2

继续

#ifndef EXANDIALOG_H
#define EXANDIALOG_H
#include <QDialog>
#include <QTimer>
#include <QTextEdit>
#include <QLabel>
#include <QRadioButton>
#include <QCheckBox>
#include <QGridLayout>


class ExanDialog : public QDialog
{
    Q_OBJECT
public:
    ExanDialog(QWidget* parent = 0);
    void initTimer();    //初始化计时器
    void initLayout();   //初始化布局
    bool initTextEdit(); //
private:
    QTimer *m_timer; //计时器
    int m_timeGo;    //考试已用时

    QTextEdit *m_textEdit;         //考试题库显示
    QLabel *m_titleLabels[10];     //题目标签
    QRadioButton *m_raidoBtns[32]; //单选题按钮
    QCheckBox *m_checkBtns[4];     //多选题按钮
    QRadioButton *m_radioA;        //判断题A选项
    QRadioButton *m_radioB;        //判断题B选项
    QGridLayout *m_layout;         //布局管理器
    QStringList m_answerList;      //答案

private slots:
    void freshTime();
};

#endif // EXANDIALOG_H

#include "exandialog.h"
#include <QString>
#include <QFile>
#include <QTextStream>
#include <QMessageBox>
#include <QApplication>

ExanDialog::ExanDialog(QWidget* parent):QDialog(parent)
{
    //设置字体大小
    QFont font;
    font.setPointSize(12);
    setFont(font);

    //设置窗体背景颜色
    setPalette(QPalette(QColor(209, 215, 255)));

    setWindowTitle("考试已用时: 0分0秒");
    setWindowFlags(Qt::Dialog | Qt::WindowCloseButtonHint);
    resize(800, 900);
    initTimer();
    initLayout();
    if (!initTextEdit())
    {
        QMessageBox::information(this, "提示", "初始化题库数据文件失败! ");
        QTimer::singleShot(0, qApp, SLOT(quit()));
    }
}

void ExanDialog::initTimer()
{
    this->m_timeGo = 0;
    this->m_timer = new QTimer(this);
    this->m_timer->setInterval(1000);
    this->m_timer->start();
    connect(m_timer, SIGNAL(timeout()), this, SLOT(freshTime()));
}

void ExanDialog::initLayout()
{
    this->m_layout =new QGridLayout(this);
    this->m_layout->setSpacing(10); //设置控件间的间距
    this->m_layout->setMargin(10);  //设置窗体与控件的间隔
}

bool ExanDialog::initTextEdit()
{
    QString strLine; //保存文件中读取到的一行数据
    QStringList strList; //保存读取到的答案行
    QString fileName("../exam.txt");
    QFile file(fileName);
    QTextStream stream(&file);
    stream.setCodec("UTF-8");

    if (file.open(QIODevice::ReadOnly | QIODevice::Text))
    {
        m_textEdit = new QTextEdit(this);
        m_textEdit->setReadOnly(true);

        QString strText; //用于保存显示到文本编辑器的数据
        int nLines = 0;
        while(!stream.atEnd())
        {
            //过滤首行
            if (nLines == 0)
            {
                stream.readLine();
                nLines++;
                continue;
            }

            //过滤答案行
            if ( (nLines >=6 && nLines <=6 * 9 && (nLines % 6 == 0)) || (nLines == 6 * 9 + 4))
            {
                strLine = stream.readLine();
                strList = strLine.split(" ");
                m_answerList.append(strList.at(1));
                strText += "\n";
                nLines++;
                continue;
            }

            strText += stream.readLine();
            strText += "\n";
            nLines++;
        }
        m_textEdit->setText(strText);
        m_layout->addWidget(m_textEdit, 0, 0, 1, 10);
        file.close();
        return true;
    }else{
        return false;
    }
}

void ExanDialog::freshTime()
{
    m_timeGo++;
    QString min = QString::number(m_timeGo/60);
    QString sec = QString::number(m_timeGo%60);
    setWindowTitle("考试已用时: " + min + "分" + sec + "秒");
}

#include "logindialog.h"
#include <QApplication>
#include "exandialog.h"

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
//    LoginDialog w;
//    w.show();
    ExanDialog w;
    w.show();

    return a.exec();
}

结语:

时间: 2020-07-20