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authorLars Knoll <lars.knoll@nokia.com>2009-03-23 10:18:55 +0100
committerSimon Hausmann <simon.hausmann@nokia.com>2009-03-23 10:18:55 +0100
commite5fcad302d86d316390c6b0f62759a067313e8a9 (patch)
treec2afbf6f1066b6ce261f14341cf6d310e5595bc1 /examples/richtext/syntaxhighlighter
Long live Qt 4.5!
Diffstat (limited to 'examples/richtext/syntaxhighlighter')
-rw-r--r--examples/richtext/syntaxhighlighter/highlighter.cpp148
-rw-r--r--examples/richtext/syntaxhighlighter/highlighter.h85
-rw-r--r--examples/richtext/syntaxhighlighter/main.cpp53
-rw-r--r--examples/richtext/syntaxhighlighter/mainwindow.cpp130
-rw-r--r--examples/richtext/syntaxhighlighter/mainwindow.h76
-rw-r--r--examples/richtext/syntaxhighlighter/syntaxhighlighter.pro17
6 files changed, 509 insertions, 0 deletions
diff --git a/examples/richtext/syntaxhighlighter/highlighter.cpp b/examples/richtext/syntaxhighlighter/highlighter.cpp
new file mode 100644
index 0000000000..5d9939d117
--- /dev/null
+++ b/examples/richtext/syntaxhighlighter/highlighter.cpp
@@ -0,0 +1,148 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the examples 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 qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtGui>
+
+#include "highlighter.h"
+
+//! [0]
+Highlighter::Highlighter(QTextDocument *parent)
+ : QSyntaxHighlighter(parent)
+{
+ HighlightingRule rule;
+
+ keywordFormat.setForeground(Qt::darkBlue);
+ keywordFormat.setFontWeight(QFont::Bold);
+ QStringList keywordPatterns;
+ keywordPatterns << "\\bchar\\b" << "\\bclass\\b" << "\\bconst\\b"
+ << "\\bdouble\\b" << "\\benum\\b" << "\\bexplicit\\b"
+ << "\\bfriend\\b" << "\\binline\\b" << "\\bint\\b"
+ << "\\blong\\b" << "\\bnamespace\\b" << "\\boperator\\b"
+ << "\\bprivate\\b" << "\\bprotected\\b" << "\\bpublic\\b"
+ << "\\bshort\\b" << "\\bsignals\\b" << "\\bsigned\\b"
+ << "\\bslots\\b" << "\\bstatic\\b" << "\\bstruct\\b"
+ << "\\btemplate\\b" << "\\btypedef\\b" << "\\btypename\\b"
+ << "\\bunion\\b" << "\\bunsigned\\b" << "\\bvirtual\\b"
+ << "\\bvoid\\b" << "\\bvolatile\\b";
+ foreach (const QString &pattern, keywordPatterns) {
+ rule.pattern = QRegExp(pattern);
+ rule.format = keywordFormat;
+ highlightingRules.append(rule);
+//! [0] //! [1]
+ }
+//! [1]
+
+//! [2]
+ classFormat.setFontWeight(QFont::Bold);
+ classFormat.setForeground(Qt::darkMagenta);
+ rule.pattern = QRegExp("\\bQ[A-Za-z]+\\b");
+ rule.format = classFormat;
+ highlightingRules.append(rule);
+//! [2]
+
+//! [3]
+ singleLineCommentFormat.setForeground(Qt::red);
+ rule.pattern = QRegExp("//[^\n]*");
+ rule.format = singleLineCommentFormat;
+ highlightingRules.append(rule);
+
+ multiLineCommentFormat.setForeground(Qt::red);
+//! [3]
+
+//! [4]
+ quotationFormat.setForeground(Qt::darkGreen);
+ rule.pattern = QRegExp("\".*\"");
+ rule.format = quotationFormat;
+ highlightingRules.append(rule);
+//! [4]
+
+//! [5]
+ functionFormat.setFontItalic(true);
+ functionFormat.setForeground(Qt::blue);
+ rule.pattern = QRegExp("\\b[A-Za-z0-9_]+(?=\\()");
+ rule.format = functionFormat;
+ highlightingRules.append(rule);
+//! [5]
+
+//! [6]
+ commentStartExpression = QRegExp("/\\*");
+ commentEndExpression = QRegExp("\\*/");
+}
+//! [6]
+
+//! [7]
+void Highlighter::highlightBlock(const QString &text)
+{
+ foreach (const HighlightingRule &rule, highlightingRules) {
+ QRegExp expression(rule.pattern);
+ int index = expression.indexIn(text);
+ while (index >= 0) {
+ int length = expression.matchedLength();
+ setFormat(index, length, rule.format);
+ index = expression.indexIn(text, index + length);
+ }
+ }
+//! [7] //! [8]
+ setCurrentBlockState(0);
+//! [8]
+
+//! [9]
+ int startIndex = 0;
+ if (previousBlockState() != 1)
+ startIndex = commentStartExpression.indexIn(text);
+
+//! [9] //! [10]
+ while (startIndex >= 0) {
+//! [10] //! [11]
+ int endIndex = commentEndExpression.indexIn(text, startIndex);
+ int commentLength;
+ if (endIndex == -1) {
+ setCurrentBlockState(1);
+ commentLength = text.length() - startIndex;
+ } else {
+ commentLength = endIndex - startIndex
+ + commentEndExpression.matchedLength();
+ }
+ setFormat(startIndex, commentLength, multiLineCommentFormat);
+ startIndex = commentStartExpression.indexIn(text, startIndex + commentLength);
+ }
+}
+//! [11]
diff --git a/examples/richtext/syntaxhighlighter/highlighter.h b/examples/richtext/syntaxhighlighter/highlighter.h
new file mode 100644
index 0000000000..2774212efd
--- /dev/null
+++ b/examples/richtext/syntaxhighlighter/highlighter.h
@@ -0,0 +1,85 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the examples 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 qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef HIGHLIGHTER_H
+#define HIGHLIGHTER_H
+
+#include <QSyntaxHighlighter>
+
+#include <QHash>
+#include <QTextCharFormat>
+
+QT_BEGIN_NAMESPACE
+class QTextDocument;
+QT_END_NAMESPACE
+
+//! [0]
+class Highlighter : public QSyntaxHighlighter
+{
+ Q_OBJECT
+
+public:
+ Highlighter(QTextDocument *parent = 0);
+
+protected:
+ void highlightBlock(const QString &text);
+
+private:
+ struct HighlightingRule
+ {
+ QRegExp pattern;
+ QTextCharFormat format;
+ };
+ QVector<HighlightingRule> highlightingRules;
+
+ QRegExp commentStartExpression;
+ QRegExp commentEndExpression;
+
+ QTextCharFormat keywordFormat;
+ QTextCharFormat classFormat;
+ QTextCharFormat singleLineCommentFormat;
+ QTextCharFormat multiLineCommentFormat;
+ QTextCharFormat quotationFormat;
+ QTextCharFormat functionFormat;
+};
+//! [0]
+
+#endif
diff --git a/examples/richtext/syntaxhighlighter/main.cpp b/examples/richtext/syntaxhighlighter/main.cpp
new file mode 100644
index 0000000000..fbb822d246
--- /dev/null
+++ b/examples/richtext/syntaxhighlighter/main.cpp
@@ -0,0 +1,53 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the examples 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 qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QApplication>
+
+#include "mainwindow.h"
+
+int main(int argc, char *argv[])
+{
+ QApplication app(argc, argv);
+ MainWindow window;
+ window.resize(640, 512);
+ window.show();
+ return app.exec();
+}
diff --git a/examples/richtext/syntaxhighlighter/mainwindow.cpp b/examples/richtext/syntaxhighlighter/mainwindow.cpp
new file mode 100644
index 0000000000..a6312f9a14
--- /dev/null
+++ b/examples/richtext/syntaxhighlighter/mainwindow.cpp
@@ -0,0 +1,130 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the examples 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 qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtGui>
+
+#include "mainwindow.h"
+
+//! [0]
+MainWindow::MainWindow(QWidget *parent)
+ : QMainWindow(parent)
+{
+ setupFileMenu();
+ setupHelpMenu();
+ setupEditor();
+
+ setCentralWidget(editor);
+ setWindowTitle(tr("Syntax Highlighter"));
+}
+//! [0]
+
+void MainWindow::about()
+{
+ QMessageBox::about(this, tr("About Syntax Highlighter"),
+ tr("<p>The <b>Syntax Highlighter</b> example shows how " \
+ "to perform simple syntax highlighting by subclassing " \
+ "the QSyntaxHighlighter class and describing " \
+ "highlighting rules using regular expressions.</p>"));
+}
+
+void MainWindow::newFile()
+{
+ editor->clear();
+}
+
+void MainWindow::openFile(const QString &path)
+{
+ QString fileName = path;
+
+ if (fileName.isNull())
+ fileName = QFileDialog::getOpenFileName(this,
+ tr("Open File"), "", "C++ Files (*.cpp *.h)");
+
+ if (!fileName.isEmpty()) {
+ QFile file(fileName);
+ if (file.open(QFile::ReadOnly | QFile::Text))
+ editor->setPlainText(file.readAll());
+ }
+}
+
+//! [1]
+void MainWindow::setupEditor()
+{
+ QFont font;
+ font.setFamily("Courier");
+ font.setFixedPitch(true);
+ font.setPointSize(10);
+
+ editor = new QTextEdit;
+ editor->setFont(font);
+
+ highlighter = new Highlighter(editor->document());
+
+ QFile file("mainwindow.h");
+ if (file.open(QFile::ReadOnly | QFile::Text))
+ editor->setPlainText(file.readAll());
+}
+//! [1]
+
+void MainWindow::setupFileMenu()
+{
+ QMenu *fileMenu = new QMenu(tr("&File"), this);
+ menuBar()->addMenu(fileMenu);
+
+ fileMenu->addAction(tr("&New"), this, SLOT(newFile()),
+ QKeySequence(tr("Ctrl+N",
+ "File|New")));
+ fileMenu->addAction(tr("&Open..."), this, SLOT(openFile()),
+ QKeySequence(tr("Ctrl+O",
+ "File|Open")));
+ fileMenu->addAction(tr("E&xit"), qApp, SLOT(quit()),
+ QKeySequence(tr("Ctrl+Q",
+ "File|Exit")));
+}
+
+void MainWindow::setupHelpMenu()
+{
+ QMenu *helpMenu = new QMenu(tr("&Help"), this);
+ menuBar()->addMenu(helpMenu);
+
+ helpMenu->addAction(tr("&About"), this, SLOT(about()));
+ helpMenu->addAction(tr("About &Qt"), qApp, SLOT(aboutQt()));
+}
diff --git a/examples/richtext/syntaxhighlighter/mainwindow.h b/examples/richtext/syntaxhighlighter/mainwindow.h
new file mode 100644
index 0000000000..12334abe6d
--- /dev/null
+++ b/examples/richtext/syntaxhighlighter/mainwindow.h
@@ -0,0 +1,76 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the examples 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 qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef MAINWINDOW_H
+#define MAINWINDOW_H
+
+#include <QMainWindow>
+
+#include "highlighter.h"
+
+QT_BEGIN_NAMESPACE
+class QTextEdit;
+QT_END_NAMESPACE
+
+//! [0]
+class MainWindow : public QMainWindow
+{
+ Q_OBJECT
+
+public:
+ MainWindow(QWidget *parent = 0);
+
+public slots:
+ void about();
+ void newFile();
+ void openFile(const QString &path = QString());
+
+private:
+ void setupEditor();
+ void setupFileMenu();
+ void setupHelpMenu();
+
+ QTextEdit *editor;
+ Highlighter *highlighter;
+};
+//! [0]
+
+#endif
diff --git a/examples/richtext/syntaxhighlighter/syntaxhighlighter.pro b/examples/richtext/syntaxhighlighter/syntaxhighlighter.pro
new file mode 100644
index 0000000000..b861970396
--- /dev/null
+++ b/examples/richtext/syntaxhighlighter/syntaxhighlighter.pro
@@ -0,0 +1,17 @@
+HEADERS = highlighter.h \
+ mainwindow.h
+SOURCES = highlighter.cpp \
+ mainwindow.cpp \
+ main.cpp
+
+# install
+target.path = $$[QT_INSTALL_EXAMPLES]/richtext/syntaxhighlighter
+sources.files = $$SOURCES $$HEADERS $$RESOURCES $$FORMS syntaxhighlighter.pro examples
+sources.path = $$[QT_INSTALL_EXAMPLES]/richtext/syntaxhighlighter
+INSTALLS += target sources
+
+wince*: {
+ addFiles.sources = main.cpp mainwindow.cpp
+ addFiles.path = .
+ DEPLOYMENT += addFiles
+}