ReadLog/mainwindow.cpp

#include <QFileDialog>
#include <QMessageBox>
#include <QDebug>
#include <QCompleter>
#include <QLabel>
#include "mainwindow.h"
#include "ui_mainwindow.h"


MainWindow::MainWindow(QWidget *parent)
        : QMainWindow(parent), ui(new Ui::MainWindow), readThread(new ReadThread) {
    ui->setupUi(this);
    // 创建版本号标签并添加到状态栏的右端
    QLabel *m_versionLabel = new QLabel(tr("v1.2.0"), this);
    ui->statusbar->addPermanentWidget(m_versionLabel);
    //隐藏进度条
    ui->progressBar->close();

    /*信号和槽*/
    //readThread
    connect(readThread, &ReadThread::clearCombo, this, &MainWindow::clearCombo);
    connect(readThread, &ReadThread::showStatusbar, this, &MainWindow::showStatusbar);
    connect(readThread, &ReadThread::setProgressBar, this, &MainWindow::setProgressBar);
    connect(readThread, &ReadThread::setBeginTime, this, &MainWindow::setBeginTime);
    connect(readThread, &ReadThread::setEndTime, this, &MainWindow::setEndTime);
    connect(readThread, &ReadThread::addCombo, this, &MainWindow::addCombo);
    connect(readThread, &ReadThread::closeProg, this, &MainWindow::closeProg);
}

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


void MainWindow::on_openFileBtn_clicked() {
    //选择文件，并获取文件名
    QString fileName = QFileDialog::getOpenFileName();
    //打开文件
    file.setFileName(fileName);
    //打开失败
    if (!file.open(QIODevice::ReadOnly)) {
        QMessageBox::warning(this, "错误", "文件打开失败");
        ui->statusbar->clearMessage();
        clearCombo();
        return;
    }
    //获取文件大小
    qint64 fileSize = file.size();
    //设置进度条
    ui->progressBar->setMaximum((int) fileSize);
    ui->progressBar->setValue(0);
    ui->progressBar->show();
    //执行读取
    readThread->start();
}


void MainWindow::on_timeCustomBtn_clicked() {
    ui->progressBar->close();
}


void MainWindow::on_dataCustomBtn_clicked() {

}

void MainWindow::clearCombo() {
    ui->comboBox->clear();
}

void MainWindow::showStatusbar(const QString &str) {
    ui->statusbar->showMessage(str);
}

void MainWindow::setProgressBar(int bytesRead) {
    ui->progressBar->setValue(bytesRead);
}

void MainWindow::setBeginTime(const QDateTime &beginTime) {
    ui->beginTimeEdit->setDateTime(beginTime);
}

void MainWindow::setEndTime(const QDateTime &endTime) {
    ui->endTimeEdit->setDateTime(endTime);
}

void MainWindow::addCombo(const QStringList &names) {
    //设置下拉框数据
    ui->comboBox->addItems(names);
    //根据输入匹配下拉框
    completer = new QCompleter(names);
    completer->setFilterMode(Qt::MatchContains);
    ui->comboBox->setCompleter(completer);
}

void MainWindow::closeProg() {
    ui->progressBar->close();
}