#include "widget.h"
#include "ui_widget.h"
Widget::Widget(QWidget *parent) :
QWidget(parent),
ui(new Ui::Widget)
{
ui->setupUi(this);
manager = new QNetworkAccessManager(this);
ui->progressBar->hide();
}
Widget::~Widget()
{
delete ui;
}
void Widget::on_pushButton_clicked()
{
url =ui->lineEdit->text();
QFileInfo info(url.path());
QString fileName(info.fileName());
if(fileName.isEmpty())
fileName = "index.html";
file = new QFile(fileName);
if(!file->open(QIODevice::WriteOnly))
{
qDebug()<<"file open error";
delete file;
file = 0;
return ;
}
startRequest(url);
ui->progressBar->setValue(0);
ui->progressBar->show();
}
void Widget::startRequest(QUrl url)
{
reply = manager->get(QNetworkRequest(url));
connect(reply,SIGNAL(finished()),
this,SLOT(httpfinished()));
connect(reply,SIGNAL(readyRead()),
this,SLOT(httpReadyRead()));
connect(reply,SIGNAL(downloadProgress(qint64,qint64)),
this, SLOT(updateDateReadProgress(qint64,qint64)));
}
void Widget::httpReadyRead()
{
if(file)
file->write(reply->readAll());
}
void Widget::updateDateReadProgress(qint64 bytesRead,qint64 totalBytes)
{
ui->progressBar->setMaximum(totalBytes);
ui->progressBar->setValue(bytesRead);
}
void Widget::httpfinished()
{
ui->progressBar->hide();
file->flush();
file->close();
reply->deleteLater();
reply = 0;
delete file;
file = 0;
}
