/****************************************************************************+
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**+
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** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).+
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** All rights reserved.+
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** Contact: Nokia Corporation (qt-info@nokia.com)+
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**+
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** This file is part of the documentation of the Qt Toolkit.+
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**+
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** $QT_BEGIN_LICENSE:LGPL$+
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** No Commercial Usage+
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** This file contains pre-release code and may not be distributed.+
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** You may use this file in accordance with the terms and conditions+
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** contained in the Technology Preview License Agreement accompanying+
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** this package.+
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**+
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** GNU Lesser General Public License Usage+
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** Alternatively, this file may be used under the terms of the GNU Lesser+
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** General Public License version 2.1 as published by the Free Software+
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** Foundation and appearing in the file LICENSE.LGPL included in the+
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** packaging of this file.  Please review the following information to+
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** ensure the GNU Lesser General Public License version 2.1 requirements+
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.+
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**+
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** In addition, as a special exception, Nokia gives you certain additional+
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** rights.  These rights are described in the Nokia Qt LGPL Exception+
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.+
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**+
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** If you have questions regarding the use of this file, please contact+
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** Nokia at qt-info@nokia.com.+
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**+
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**+
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**+
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**+
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**+
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**+
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**+
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**+
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** $QT_END_LICENSE$+
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**+
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****************************************************************************/+
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+
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#include <QAction>+
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#include <QDataStream>+
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#include <QMenu>+
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#include <QMenuBar>+
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#include <QFile>+
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#include <QFileDialog>+
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#include <QListView>+
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+
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#include "window.h"+
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+
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MainWindow::MainWindow(QWidget *parent)+
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    : QMainWindow(parent)+
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{+
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    setWindowTitle("Model/View example");+
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+
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    setupModelView();+
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+
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    QAction *openAction = new QAction(tr("&Open"), this);+
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    QAction *quitAction = new QAction(tr("E&xit"), this);+
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    QMenu *fileMenu = new QMenu(tr("&File"), this);+
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    fileMenu->addAction(openAction);+
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    fileMenu->addAction(quitAction);+
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    menuBar()->addMenu(fileMenu);+
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+
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    connect(openAction, SIGNAL(triggered()), this, SLOT(selectOpenFile()));+
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    connect(quitAction, SIGNAL(triggered()), this, SLOT(close()));+
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+
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    setCentralWidget(view);+
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}+
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+
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void MainWindow::setupModelView()+
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{+
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    model = new LinearModel(this);+
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    view = new LinearView(this);+
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    view->setModel(model);+
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}+
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+
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void MainWindow::selectOpenFile()+
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{+
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    QString fileName = QFileDialog::getOpenFileName(this,+
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        tr("Select a file to open"), "", tr("Sound files (*.wav)"));+
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    +
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    if (!fileName.isEmpty())+
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        openFile(fileName);+
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}+
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+
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void MainWindow::openFile(const QString &fileName)+
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{+
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    QFile file(fileName);+
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    int length = file.size();+
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+
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    if (file.open(QFile::ReadOnly)) {+
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        model->removeRows(0, model->rowCount());+
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+
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        int rows = (length - 0x2c)/2;+
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        model->insertRows(0, rows);+
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+
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        // Perform some dodgy tricks to extract the data from the file.+
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        QDataStream stream(&file);+
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        stream.setByteOrder(QDataStream::LittleEndian);+
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+
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        Q_INT16 left;+
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        Q_INT16 right;+
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+
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        for (int row = 0; row < rows; ++row) {+
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            QModelIndex index = model->index(row);+
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+
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            stream >> left >> right;+
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            model->setData(index, int(left / 256));+
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        }+
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    }+
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}+
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