实现简单的网页浏览

先看下效果图：

http://blog.chinaunix.net/photo/116111_101004193852.jpg

在url处输入 即可进入百度首页

代码实现：

browser::browser(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::browser)
{
    ui->setupUi(this);

    //webView是一个QWebview类定义的对象
    QObject::connect(ui->webView, SIGNAL(titleChanged(QString)),
                     this, SLOT(UpdateTitle()));
    QObject::connect(ui->webView, SIGNAL(urlChanged(QUrl)), this,
                     SLOT(UpdateUrl()));

    //添加一个进度条

    progressBar = new QProgressBar;
    ui->statusBar->addWidget(progressBar);
    QObject::connect(ui->webView, SIGNAL(loadProgress(int)), this,
                     SLOT(UpdateProgressBar(int)));

    QObject::connect(ui->SourceLookaction, SIGNAL(triggered()), this,
                     SLOT(GetSource()));
}

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

void browser::changeEvent(QEvent *e)
{
    QMainWindow::changeEvent(e);
    switch (e->type()) {
    case QEvent::LanguageChange:
        ui->retranslateUi(this);
        break;
    default:
        break;
    }
}

void browser::on_UrllineEdit_returnPressed()
{
    ui->webView->load(QUrl(ui->UrllineEdit->text()));
}

void browser::UpdateTitle()
{
    this->setWindowTitle(ui->webView->title() + "--farSight");
}

void browser::UpdateUrl()
{
    ui->UrllineEdit->setText(ui->webView->url().toString());
}

void browser::on_GoToButton_clicked()
{
    ui->webView->load(QUrl(ui->UrllineEdit->text()));
}

//前进

void browser::on_ForwardButton_clicked()
{
    ui->webView->forward();;
}

//后退

void browser::on_BackwardButton_clicked()
{
    ui->webView->back();
}

void browser::UpdateProgressBar(int i)
{
    qDebug()<<"i = " <    this->progressBar->setValue(i);
}

//获取源码

void browser::GetSource()
{
    QString source(ui->webView->page()->currentFrame()->toHtml());
    childWindow *d = new childWindow;
    d->setSource(source);
    d->show();
}