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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the documentation of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain
** additional rights. These rights are described in the Nokia Qt LGPL
** Exception version 1.1, included in the file LGPL_EXCEPTION.txt in this
** package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <QAction>
#include <QDataStream>
#include <QMenu>
#include <QMenuBar>
#include <QFile>
#include <QFileDialog>
#include <QListView>
#include "window.h"
MainWindow::MainWindow(QWidget *parent)
: QMainWindow(parent)
{
setWindowTitle("Model/View example");
setupModelView();
QAction *openAction = new QAction(tr("&Open"), this);
QAction *quitAction = new QAction(tr("E&xit"), this);
QMenu *fileMenu = new QMenu(tr("&File"), this);
fileMenu->addAction(openAction);
fileMenu->addAction(quitAction);
menuBar()->addMenu(fileMenu);
connect(openAction, SIGNAL(triggered()), this, SLOT(selectOpenFile()));
connect(quitAction, SIGNAL(triggered()), this, SLOT(close()));
setCentralWidget(view);
}
void MainWindow::setupModelView()
{
model = new LinearModel(this);
view = new LinearView(this);
view->setModel(model);
}
void MainWindow::selectOpenFile()
{
QString fileName = QFileDialog::getOpenFileName(this,
tr("Select a file to open"), "", tr("Sound files (*.wav)"));
if (!fileName.isEmpty())
openFile(fileName);
}
void MainWindow::openFile(const QString &fileName)
{
QFile file(fileName);
int length = file.size();
if (file.open(QFile::ReadOnly)) {
model->removeRows(0, model->rowCount());
int rows = (length - 0x2c)/2;
model->insertRows(0, rows);
// Perform some dodgy tricks to extract the data from the file.
QDataStream stream(&file);
stream.setByteOrder(QDataStream::LittleEndian);
Q_INT16 left;
Q_INT16 right;
for (int row = 0; row < rows; ++row) {
QModelIndex index = model->index(row);
stream >> left >> right;
model->setData(index, int(left / 256));
}
}
}
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