1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
|
/****************************************************************************
**
** Copyright (C) 2011 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));
}
}
}
|
