summaryrefslogtreecommitdiffstats
path: root/doc/src/snippets/textdocument-printing/mainwindow.cpp
blob: 5fcc4ef254162843df193ce2b5630a1fbecdb93a (plain)
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
113
114
115
116
117
118
119
120
121
122
123
124
125
/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the documentation of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the either Technology Preview License Agreement or the
** Beta Release License Agreement.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain
** additional rights. These rights are described in the Nokia Qt LGPL
** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
** package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at http://www.qtsoftware.com/contact.
** $QT_END_LICENSE$
**
****************************************************************************/

#include <QtGui>

#include "mainwindow.h"

MainWindow::MainWindow()
{
    QMenu *fileMenu = new QMenu(tr("&File"));

    fileMenu->addAction(tr("&Open..."), this, SLOT(openFile()),
                        QKeySequence(tr("Ctrl+O", "File|Open")));

    printAction = fileMenu->addAction(tr("&Print..."), this, SLOT(printFile()));
    printAction->setEnabled(false);

    pdfPrintAction = fileMenu->addAction(tr("Print as P&DF..."), this, SLOT(printPdf()));
    pdfPrintAction->setEnabled(false);

    fileMenu->addAction(tr("E&xit"), this, SLOT(close()),
                        QKeySequence(tr("Ctrl+Q", "File|Exit")));

    menuBar()->addMenu(fileMenu);

    editor = new QTextEdit(this);
    document = new QTextDocument(this);
    editor->setDocument(document);

    connect(editor, SIGNAL(selectionChanged()), this, SLOT(updateMenus()));

    setCentralWidget(editor);
    setWindowTitle(tr("Text Document Writer"));
}

void MainWindow::openFile()
{
    QString fileName = QFileDialog::getOpenFileName(this,
        tr("Open file"), currentFile, "HTML files (*.html);;Text files (*.txt)");
    
    if (!fileName.isEmpty()) {
        QFileInfo info(fileName);
        if (info.completeSuffix() == "html") {
            QFile file(fileName);
            
            if (file.open(QIODevice::ReadOnly)) {
                editor->setHtml(file.readAll());
                file.close();
                currentFile = fileName;
            }
        } else if (info.completeSuffix() == "txt") {
            QFile file(fileName);
            
            if (file.open(QIODevice::ReadOnly)) {
                editor->setPlainText(file.readAll());
                file.close();
                currentFile = fileName;
            }
        }
        printAction->setEnabled(true);
        pdfPrintAction->setEnabled(true);
    }
}

void MainWindow::printFile()
{
//! [0]
    QTextDocument *document = editor->document();
    QPrinter printer;

    QPrintDialog *dlg = new QPrintDialog(&printer, this);
    if (dlg->exec() != QDialog::Accepted)
        return;

    document->print(&printer);
//! [0]
}

void MainWindow::printPdf()
{
    QPrinter printer(QPrinter::HighResolution);
    printer.setOutputFormat(QPrinter::PdfFormat);

    QPrintDialog *printDialog = new QPrintDialog(&printer, this);
    if (printDialog->exec() == QDialog::Accepted)
        editor->document()->print(&printer);
}