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/****************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the documentation of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** You may use this file under the terms of the BSD license as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
**   * Redistributions of source code must retain the above copyright
**     notice, this list of conditions and the following disclaimer.
**   * Redistributions in binary form must reproduce the above copyright
**     notice, this list of conditions and the following disclaimer in
**     the documentation and/or other materials provided with the
**     distribution.
**   * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
**     the names of its contributors may be used to endorse or promote
**     products derived from this software without specific prior written
**     permission.
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
** $QT_END_LICENSE$
**
****************************************************************************/

#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));
        }
    }
}