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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt Creator.
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
****************************************************************************/
#pragma once
#include "texteditor_global.h"
#include <texteditor/texteditorconstants.h>
#include <QObject>
#include <QTextLayout>
#include <functional>
#include <climits>
QT_BEGIN_NAMESPACE
class QTextDocument;
class QSyntaxHighlighterPrivate;
class QTextCharFormat;
class QFont;
class QColor;
class QTextBlockUserData;
class QTextEdit;
QT_END_NAMESPACE
namespace TextEditor {
class FontSettings;
class SyntaxHighlighterPrivate;
class TEXTEDITOR_EXPORT SyntaxHighlighter : public QObject
{
Q_OBJECT
Q_DECLARE_PRIVATE(SyntaxHighlighter)
public:
SyntaxHighlighter(QObject *parent = nullptr);
SyntaxHighlighter(QTextDocument *parent);
SyntaxHighlighter(QTextEdit *parent);
~SyntaxHighlighter() override;
void setDocument(QTextDocument *doc);
QTextDocument *document() const;
void setExtraFormats(const QTextBlock &block, QVector<QTextLayout::FormatRange> &&formats);
void clearExtraFormats(const QTextBlock &block);
void clearAllExtraFormats();
static QList<QColor> generateColors(int n, const QColor &background);
// Don't call in constructors of derived classes
virtual void setFontSettings(const TextEditor::FontSettings &fontSettings);
TextEditor::FontSettings fontSettings() const;
void setNoAutomaticHighlighting(bool noAutomatic);
public slots:
void rehighlight();
void rehighlightBlock(const QTextBlock &block);
protected:
void setDefaultTextFormatCategories();
void setTextFormatCategories(int count, std::function<TextStyle(int)> formatMapping);
QTextCharFormat formatForCategory(int categoryIndex) const;
// implement in subclasses
// default implementation highlights whitespace
virtual void highlightBlock(const QString &text);
void setFormat(int start, int count, const QTextCharFormat &format);
void setFormat(int start, int count, const QColor &color);
void setFormat(int start, int count, const QFont &font);
QTextCharFormat format(int pos) const;
void formatSpaces(const QString &text, int start = 0, int count = INT_MAX);
void setFormatWithSpaces(const QString &text, int start, int count,
const QTextCharFormat &format);
int previousBlockState() const;
int currentBlockState() const;
void setCurrentBlockState(int newState);
void setCurrentBlockUserData(QTextBlockUserData *data);
QTextBlockUserData *currentBlockUserData() const;
QTextBlock currentBlock() const;
private:
void setTextFormatCategories(const QVector<std::pair<int, TextStyle>> &categories);
void reformatBlocks(int from, int charsRemoved, int charsAdded);
void delayedRehighlight();
QScopedPointer<SyntaxHighlighterPrivate> d_ptr;
};
} // namespace TextEditor
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