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1 /**************************************************************************** |
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2 ** |
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3 ** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). |
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4 ** All rights reserved. |
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5 ** Contact: Nokia Corporation (qt-info@nokia.com) |
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6 ** |
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7 ** This file is part of the documentation of the Qt Toolkit. |
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8 ** |
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9 ** $QT_BEGIN_LICENSE:LGPL$ |
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10 ** No Commercial Usage |
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11 ** This file contains pre-release code and may not be distributed. |
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12 ** You may use this file in accordance with the terms and conditions |
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13 ** contained in the Technology Preview License Agreement accompanying |
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14 ** this package. |
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15 ** |
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16 ** GNU Lesser General Public License Usage |
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17 ** Alternatively, this file may be used under the terms of the GNU Lesser |
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18 ** General Public License version 2.1 as published by the Free Software |
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19 ** Foundation and appearing in the file LICENSE.LGPL included in the |
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20 ** packaging of this file. Please review the following information to |
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21 ** ensure the GNU Lesser General Public License version 2.1 requirements |
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22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. |
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23 ** |
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24 ** In addition, as a special exception, Nokia gives you certain additional |
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25 ** rights. These rights are described in the Nokia Qt LGPL Exception |
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26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. |
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27 ** |
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28 ** If you have questions regarding the use of this file, please contact |
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29 ** Nokia at qt-info@nokia.com. |
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30 ** |
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31 ** |
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32 ** |
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33 ** |
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34 ** |
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35 ** |
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36 ** |
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37 ** |
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38 ** $QT_END_LICENSE$ |
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39 ** |
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40 ****************************************************************************/ |
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41 |
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42 #include <QAction> |
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43 #include <QDataStream> |
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44 #include <QMenu> |
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45 #include <QMenuBar> |
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46 #include <QFile> |
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47 #include <QFileDialog> |
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48 #include <QListView> |
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49 |
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50 #include "window.h" |
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51 |
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52 MainWindow::MainWindow(QWidget *parent) |
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53 : QMainWindow(parent) |
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54 { |
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55 setWindowTitle("Model/View example"); |
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56 |
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57 setupModelView(); |
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58 |
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59 QAction *openAction = new QAction(tr("&Open"), this); |
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60 QAction *quitAction = new QAction(tr("E&xit"), this); |
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61 QMenu *fileMenu = new QMenu(tr("&File"), this); |
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62 fileMenu->addAction(openAction); |
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63 fileMenu->addAction(quitAction); |
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64 menuBar()->addMenu(fileMenu); |
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65 |
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66 connect(openAction, SIGNAL(triggered()), this, SLOT(selectOpenFile())); |
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67 connect(quitAction, SIGNAL(triggered()), this, SLOT(close())); |
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68 |
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69 setCentralWidget(view); |
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70 } |
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71 |
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72 void MainWindow::setupModelView() |
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73 { |
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74 model = new LinearModel(this); |
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75 view = new LinearView(this); |
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76 view->setModel(model); |
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77 } |
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78 |
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79 void MainWindow::selectOpenFile() |
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80 { |
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81 QString fileName = QFileDialog::getOpenFileName(this, |
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82 tr("Select a file to open"), "", tr("Sound files (*.wav)")); |
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83 |
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84 if (!fileName.isEmpty()) |
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85 openFile(fileName); |
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86 } |
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87 |
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88 void MainWindow::openFile(const QString &fileName) |
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89 { |
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90 QFile file(fileName); |
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91 int length = file.size(); |
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92 |
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93 if (file.open(QFile::ReadOnly)) { |
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94 model->removeRows(0, model->rowCount()); |
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95 |
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96 int rows = (length - 0x2c)/2; |
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97 model->insertRows(0, rows); |
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98 |
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99 // Perform some dodgy tricks to extract the data from the file. |
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100 QDataStream stream(&file); |
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101 stream.setByteOrder(QDataStream::LittleEndian); |
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102 |
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103 Q_INT16 left; |
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104 Q_INT16 right; |
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105 |
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106 for (int row = 0; row < rows; ++row) { |
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107 QModelIndex index = model->index(row); |
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108 |
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109 stream >> left >> right; |
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110 model->setData(index, int(left / 256)); |
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111 } |
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112 } |
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113 } |