You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
91 lines
2.9 KiB
91 lines
2.9 KiB
14 years ago
|
/****************************************************************************
|
||
|
|
**
|
||
|
|
** Copyright (C) 1992-2008 Trolltech ASA. All rights reserved.
|
||
|
|
**
|
||
|
|
** This file is part of an example program for Qt. This example
|
||
|
|
** program may be used, distributed and modified without limitation.
|
||
|
|
**
|
||
|
|
*****************************************************************************/
|
||
|
|
|
||
|
|
#include "view.h"
|
||
|
|
|
||
|
|
#include <qlabel.h>
|
||
|
|
#include <qpushbutton.h>
|
||
|
|
#include <qmultilineedit.h>
|
||
|
|
#include <qfiledialog.h>
|
||
|
|
|
||
|
|
View::View()
|
||
|
|
: QVBox()
|
||
|
|
{
|
||
|
|
// setup the GUI
|
||
|
|
setSpacing( 5 );
|
||
|
|
setMargin( 5 );
|
||
|
|
|
||
|
|
QLabel *l = new QLabel( this );
|
||
|
|
l->setAlignment( Qt::WordBreak ),
|
||
|
|
l->setText( tr( "The button below opens the QFileDialog and you "
|
||
|
|
"can choose a file then which is downloaded and "
|
||
|
|
"opened below then. You can use for that the <b>local "
|
||
|
|
"filesystem</b> using the file protocol, you can download "
|
||
|
|
"files from an <b>FTP</b> server using the ftp protocol and "
|
||
|
|
"you can download and open <b>USENET</b> articles using the "
|
||
|
|
"demo implementation of the nntp protocol of this "
|
||
|
|
"example (<i>This implementation of the nntp protocol is a very "
|
||
|
|
"basic and incomplete one, so you need to connect to a news server "
|
||
|
|
"which allows reading without authentification</i>)\n"
|
||
|
|
"To open a file from the local filesystem, enter in the "
|
||
|
|
"path combobox of the file dialog a url starting with file "
|
||
|
|
"(like <u>file:/usr/bin</u>), to download something from an FTP "
|
||
|
|
"server, use something like <u>ftp://ftp.trolltech.com</u> as url, and "
|
||
|
|
"for downloading a news article start with an url like "
|
||
|
|
"<u>nntp://news.tu-graz.ac.at</u> " ) );
|
||
|
|
QPushButton *b = new QPushButton( tr( "Open a file..." ), this );
|
||
|
|
connect( b, SIGNAL( clicked() ),
|
||
|
|
this, SLOT( downloadFile() ) );
|
||
|
|
|
||
|
|
fileView = new QMultiLineEdit( this );
|
||
|
|
fileView->setReadOnly( TRUE );
|
||
|
|
|
||
|
|
// if new data comes in, display it
|
||
|
|
connect( &op, SIGNAL( data( const QByteArray &, QNetworkOperation * ) ),
|
||
|
|
this, SLOT( newData( const QByteArray & ) ) );
|
||
|
|
}
|
||
|
|
|
||
|
|
void View::downloadFile()
|
||
|
|
{
|
||
|
|
// QString file = QFileDialog::getOpenFileName();
|
||
|
|
// under Windows you must not use the native file dialog
|
||
|
|
QString file = getOpenFileName();
|
||
|
|
if ( !file.isEmpty() ) {
|
||
|
|
// clear the view
|
||
|
|
fileView->clear();
|
||
|
|
|
||
|
|
// download the data
|
||
|
|
op = file;
|
||
|
|
op.get();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
QString View::getOpenFileName()
|
||
|
|
{
|
||
|
|
static QString workingDirectory = QDir::currentDirPath();
|
||
|
|
|
||
|
|
QFileDialog *dlg = new QFileDialog( workingDirectory,
|
||
|
|
QString::null, 0, 0, TRUE );
|
||
|
|
dlg->setCaption( QFileDialog::tr( "Open" ) );
|
||
|
|
dlg->setMode( QFileDialog::ExistingFile );
|
||
|
|
QString result;
|
||
|
|
if ( dlg->exec() == QDialog::Accepted ) {
|
||
|
|
result = dlg->selectedFile();
|
||
|
|
workingDirectory = dlg->url();
|
||
|
|
}
|
||
|
|
delete dlg;
|
||
|
|
return result;
|
||
|
|
}
|
||
|
|
|
||
|
|
void View::newData( const QByteArray &ba )
|
||
|
|
{
|
||
|
|
// append new data
|
||
|
|
fileView->append( ba );
|
||
|
|
}
|