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// This defines the interface to the QsciLexerCustom class.
//
// Copyright (c) 2010 Riverbank Computing Limited <info@riverbankcomputing.com>
//
// This file is part of QScintilla.
//
// This file may be used under the terms of the GNU General Public
// License versions 2.0 or 3.0 as published by the Free Software
// Foundation and appearing in the files LICENSE.GPL2 and LICENSE.GPL3
// included in the packaging of this file. Alternatively you may (at
// your option) use any later version of the GNU General Public
// License if such license has been publicly approved by Riverbank
// Computing Limited (or its successors, if any) and the KDE Free Qt
// Foundation. In addition, as a special exception, Riverbank gives you
// certain additional rights. These rights are described in the Riverbank
// GPL Exception version 1.1, which can be found in the file
// GPL_EXCEPTION.txt in this package.
//
// Please review the following information to ensure GNU General
// Public Licensing requirements will be met:
// http://trolltech.com/products/qt/licenses/licensing/opensource/. If
// you are unsure which license is appropriate for your use, please
// review the following information:
// http://trolltech.com/products/qt/licenses/licensing/licensingoverview
// or contact the sales department at sales@riverbankcomputing.com.
//
// This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
// WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
#ifndef QSCILEXERCUSTOM_H
#define QSCILEXERCUSTOM_H
#ifdef __APPLE__
extern "C++" {
#endif
#include <Qsci/qsciglobal.h>
#include <Qsci/qscilexer.h>
class QsciScintilla;
class QsciStyle;
//! \brief The QsciLexerCustom class is an abstract class used as a base for
//! new language lexers.
//!
//! The advantage of implementing a new lexer this way (as opposed to adding
//! the lexer to the underlying Scintilla code) is that it does not require the
//! QScintilla library to be re-compiled. It also makes it possible to
//! integrate external lexers.
//!
//! All that is necessary to implement a new lexer is to define appropriate
//! styles and to re-implement the styleText() method.
class QSCINTILLA_EXPORT QsciLexerCustom : public QsciLexer
{
Q_OBJECT
public:
//! Construct a QsciLexerCustom with parent \a parent and name \a name. \a
//! parent is typically the QsciScintilla instance.
QsciLexerCustom(QObject *parent = 0, const char *name = 0);
//! Destroy the QSciLexerCustom.
virtual ~QsciLexerCustom();
//! The next \a length characters starting from the current styling
//! position have their style set to style number \a style. The current
//! styling position is moved. The styling position is initially set by
//! calling startStyling().
//!
//! \sa startStyling(), styleText()
void setStyling(int length, int style);
//! The next \a length characters starting from the current styling
//! position have their style set to style \a style. The current styling
//! position is moved. The styling position is initially set by calling
//! startStyling().
//!
//! \sa startStyling(), styleText()
void setStyling(int length, const QsciStyle &style);
//! The styling position is set to \a start and the mask of style bits that
//! can be set is set to \a style_bits. \a style_bits allows the styling
//! of text to be done over several passes by setting different style bits
//! on each pass. If \a style_bits is 0 then all style bits (as returned
//! by styleBitsNeeded()) are set.
//!
//! \sa setStyling(), styleBitsNeeded(), styleText()
void startStyling(int pos, int style_bits = 0);
//! This is called when the section of text beginning at position \a start
//! and up to position \a end needs to be styled. \a start will always be
//! at the start of a line. The text is styled by calling startStyling()
//! followed by one or more calls to setStyling(). It must be
//! re-implemented by a sub-class.
//!
//! \sa setStyling(), startStyling()
virtual void styleText(int start, int end) = 0;
//! \reimp
virtual void setEditor(QsciScintilla *editor);
//! \reimp This re-implementation returns 5 as the number of style bits
//! needed.
virtual int styleBitsNeeded() const;
private slots:
void handleStyleNeeded(int pos);
private:
QsciLexerCustom(const QsciLexerCustom &);
QsciLexerCustom &operator=(const QsciLexerCustom &);
};
#ifdef __APPLE__
}
#endif
#endif
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