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
|
// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
#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));
}
}
}
|
