| 1 | /****************************************************************************
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| 2 | **
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| 3 | ** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
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| 4 | ** All rights reserved.
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| 5 | ** Contact: Nokia Corporation ([email protected])
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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 | ** $QT_BEGIN_LICENSE:BSD$
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| 10 | ** You may use this file under the terms of the BSD license as follows:
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| 11 | **
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| 12 | ** "Redistribution and use in source and binary forms, with or without
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| 13 | ** modification, are permitted provided that the following conditions are
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| 14 | ** met:
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| 15 | ** * Redistributions of source code must retain the above copyright
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| 16 | ** notice, this list of conditions and the following disclaimer.
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| 17 | ** * Redistributions in binary form must reproduce the above copyright
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| 18 | ** notice, this list of conditions and the following disclaimer in
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| 19 | ** the documentation and/or other materials provided with the
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| 20 | ** distribution.
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| 21 | ** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
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| 22 | ** the names of its contributors may be used to endorse or promote
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| 23 | ** products derived from this software without specific prior written
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| 24 | ** permission.
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| 25 | **
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| 26 | ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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| 27 | ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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| 28 | ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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| 29 | ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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| 30 | ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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| 31 | ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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| 32 | ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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| 33 | ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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| 34 | ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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| 35 | ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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| 36 | ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
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| 37 | ** $QT_END_LICENSE$
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| 38 | **
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| 39 | ****************************************************************************/
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| 40 |
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| 41 | #include <QtGui>
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| 42 |
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| 43 | #include "mainwindow.h"
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| 44 | #include "xmlwriter.h"
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| 45 |
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| 46 | MainWindow::MainWindow()
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| 47 | {
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| 48 | QMenu *fileMenu = new QMenu(tr("&File"));
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| 49 |
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| 50 | QAction *saveAction = fileMenu->addAction(tr("&Save..."));
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| 51 | saveAction->setShortcut(tr("Ctrl+S"));
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| 52 |
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| 53 | QAction *quitAction = fileMenu->addAction(tr("E&xit"));
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| 54 | quitAction->setShortcut(tr("Ctrl+Q"));
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| 55 |
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| 56 | menuBar()->addMenu(fileMenu);
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| 57 | editor = new QTextEdit();
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| 58 |
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| 59 | QTextCursor cursor(editor->textCursor());
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| 60 | cursor.movePosition(QTextCursor::Start);
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| 61 |
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| 62 | QTextFrame *mainFrame = cursor.currentFrame();
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| 63 |
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| 64 | QTextCharFormat plainCharFormat;
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| 65 | QTextCharFormat boldCharFormat;
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| 66 | boldCharFormat.setFontWeight(QFont::Bold);
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| 67 | /* main frame
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| 68 | //! [0]
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| 69 | QTextFrame *mainFrame = cursor.currentFrame();
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| 70 | cursor.insertText(...);
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| 71 | //! [0]
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| 72 | */
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| 73 | cursor.insertText("Text documents are represented by the "
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| 74 | "QTextDocument class, rather than by QString objects. "
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| 75 | "Each QTextDocument object contains information about "
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| 76 | "the document's internal representation, its structure, "
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| 77 | "and keeps track of modifications to provide undo/redo "
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| 78 | "facilities. This approach allows features such as the "
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| 79 | "layout management to be delegated to specialized "
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| 80 | "classes, but also provides a focus for the framework.",
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| 81 | plainCharFormat);
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| 82 |
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| 83 | //! [1]
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| 84 | QTextFrameFormat frameFormat;
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| 85 | frameFormat.setMargin(32);
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| 86 | frameFormat.setPadding(8);
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| 87 | frameFormat.setBorder(4);
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| 88 | //! [1]
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| 89 | cursor.insertFrame(frameFormat);
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| 90 |
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| 91 | /* insert frame
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| 92 | //! [2]
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| 93 | cursor.insertFrame(frameFormat);
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| 94 | cursor.insertText(...);
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| 95 | //! [2]
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| 96 | */
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| 97 | cursor.insertText("Documents are either converted from external sources "
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| 98 | "or created from scratch using Qt. The creation process "
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| 99 | "can done by an editor widget, such as QTextEdit, or by "
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| 100 | "explicit calls to the Scribe API.", boldCharFormat);
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| 101 |
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| 102 | cursor = mainFrame->lastCursorPosition();
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| 103 | /* last cursor
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| 104 | //! [3]
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| 105 | cursor = mainFrame->lastCursorPosition();
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| 106 | cursor.insertText(...);
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| 107 | //! [3]
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| 108 | */
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| 109 | cursor.insertText("There are two complementary ways to visualize the "
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| 110 | "contents of a document: as a linear buffer that is "
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| 111 | "used by editors to modify the contents, and as an "
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| 112 | "object hierarchy containing structural information "
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| 113 | "that is useful to layout engines. In the hierarchical "
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| 114 | "model, the objects generally correspond to visual "
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| 115 | "elements such as frames, tables, and lists. At a lower "
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| 116 | "level, these elements describe properties such as the "
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| 117 | "style of text used and its alignment. The linear "
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| 118 | "representation of the document is used for editing and "
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| 119 | "manipulation of the document's contents.",
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| 120 | plainCharFormat);
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| 121 |
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| 122 |
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| 123 | connect(saveAction, SIGNAL(triggered()), this, SLOT(saveFile()));
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| 124 | connect(quitAction, SIGNAL(triggered()), this, SLOT(close()));
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| 125 |
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| 126 | setCentralWidget(editor);
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| 127 | setWindowTitle(tr("Text Document Frames"));
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| 128 | }
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| 129 |
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| 130 | void MainWindow::saveFile()
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| 131 | {
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| 132 | QString fileName = QFileDialog::getSaveFileName(this,
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| 133 | tr("Save document as:"), "", tr("XML (*.xml)"));
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| 134 |
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| 135 | if (!fileName.isEmpty()) {
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| 136 | if (writeXml(fileName))
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| 137 | setWindowTitle(fileName);
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| 138 | else
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| 139 | QMessageBox::warning(this, tr("Warning"),
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| 140 | tr("Failed to save the document."), QMessageBox::Cancel,
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| 141 | QMessageBox::NoButton);
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| 142 | }
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| 143 | }
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| 144 | bool MainWindow::writeXml(const QString &fileName)
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| 145 | {
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| 146 | XmlWriter documentWriter(editor->document());
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| 147 |
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| 148 | QDomDocument *domDocument = documentWriter.toXml();
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| 149 | QFile file(fileName);
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| 150 |
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| 151 | if (file.open(QFile::WriteOnly)) {
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| 152 | QTextStream textStream(&file);
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| 153 | textStream.setCodec(QTextCodec::codecForName("UTF-8"));
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| 154 |
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| 155 | textStream << domDocument->toString(1).toUtf8();
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| 156 | file.close();
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| 157 | return true;
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| 158 | }
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| 159 | else
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| 160 | return false;
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| 161 | }
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