source: trunk/doc/src/snippets/signalmapper/filereader.cpp@ 624

Last change on this file since 624 was 561, checked in by Dmitry A. Kuminov, 15 years ago

trunk: Merged in qt 4.6.1 sources.

File size: 3.5 KB
Line 
1/****************************************************************************
2**
3** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
4** All rights reserved.
5** Contact: Nokia Corporation ([email protected])
6**
7** This file is part of the config.tests of the Qt Toolkit.
8**
9** $QT_BEGIN_LICENSE:LGPL$
10** Commercial Usage
11** Licensees holding valid Qt Commercial licenses may use this file in
12** accordance with the Qt Commercial License Agreement provided with the
13** Software or, alternatively, in accordance with the terms contained in
14** a written agreement between you and Nokia.
15**
16** GNU Lesser General Public License Usage
17** Alternatively, this file may be used under the terms of the GNU Lesser
18** General Public License version 2.1 as published by the Free Software
19** Foundation and appearing in the file LICENSE.LGPL included in the
20** packaging of this file. Please review the following information to
21** ensure the GNU Lesser General Public License version 2.1 requirements
22** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
23**
24** In addition, as a special exception, Nokia gives you certain additional
25** rights. These rights are described in the Nokia Qt LGPL Exception
26** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
27**
28** GNU General Public License Usage
29** Alternatively, this file may be used under the terms of the GNU
30** General Public License version 3.0 as published by the Free Software
31** Foundation and appearing in the file LICENSE.GPL included in the
32** packaging of this file. Please review the following information to
33** ensure the GNU General Public License version 3.0 requirements will be
34** met: http://www.gnu.org/copyleft/gpl.html.
35**
36** If you have questions regarding the use of this file, please contact
37** Nokia at [email protected].
38** $QT_END_LICENSE$
39**
40****************************************************************************/
41
42#include <QtGui>
43#include "filereader.h"
44
45
46FileReader::FileReader(QWidget *parent)
47 : QWidget(parent)
48{
49 textEdit = new QTextEdit;
50
51 taxFileButton = new QPushButton("Tax File");
52 accountFileButton = new QPushButton("Accounts File");
53 reportFileButton = new QPushButton("Report File");
54
55//! [0]
56 signalMapper = new QSignalMapper(this);
57 signalMapper->setMapping(taxFileButton, QString("taxfile.txt"));
58 signalMapper->setMapping(accountFileButton, QString("accountsfile.txt"));
59 signalMapper->setMapping(reportFileButton, QString("reportfile.txt"));
60
61 connect(taxFileButton, SIGNAL(clicked()),
62 signalMapper, SLOT (map()));
63 connect(accountFileButton, SIGNAL(clicked()),
64 signalMapper, SLOT (map()));
65 connect(reportFileButton, SIGNAL(clicked()),
66 signalMapper, SLOT (map()));
67//! [0]
68
69//! [1]
70 connect(signalMapper, SIGNAL(mapped(const QString &)),
71 this, SLOT(readFile(const QString &)));
72//! [1]
73
74 QHBoxLayout *buttonLayout = new QHBoxLayout;
75 buttonLayout->addWidget(taxFileButton);
76 buttonLayout->addWidget(accountFileButton);
77 buttonLayout->addWidget(reportFileButton);
78
79 QVBoxLayout *mainLayout = new QVBoxLayout;
80 mainLayout->addWidget(textEdit);
81 mainLayout->addLayout(buttonLayout);
82
83 setLayout(mainLayout);
84}
85
86void FileReader::readFile(const QString &filename)
87{
88 QFile file(filename);
89
90 if (!file.open(QIODevice::ReadOnly)) {
91 QMessageBox::information(this, tr("Unable to open file"),
92 file.errorString());
93 return;
94 }
95
96
97 QTextStream in(&file);
98 textEdit->setPlainText(in.readAll());
99}
100
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