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// This module implements the QsciLexerCustom class.
//
// Copyright (c) 2015 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
// version 3.0 as published by the Free Software Foundation and appearing in
// the file LICENSE 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 do not wish to use this file under the terms of the GPL version 3.0
// then you may purchase a commercial license. For more information contact
// info@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.
#include "Qsci/qscilexercustom.h"
#include "Qsci/qsciscintilla.h"
#include "Qsci/qsciscintillabase.h"
#include "Qsci/qscistyle.h"
// The ctor.
QsciLexerCustom::QsciLexerCustom(QObject *parent)
: QsciLexer(parent)
{
}
// The dtor.
QsciLexerCustom::~QsciLexerCustom()
{
}
// Start styling.
void QsciLexerCustom::startStyling(int start, int styleBits)
{
if (!editor())
return;
if (styleBits == 0)
styleBits = (1 << styleBitsNeeded()) - 1;
editor()->SendScintilla(QsciScintillaBase::SCI_STARTSTYLING, start,
styleBits);
}
// Set the style for a number of characters.
void QsciLexerCustom::setStyling(int length, int style)
{
if (!editor())
return;
editor()->SendScintilla(QsciScintillaBase::SCI_SETSTYLING, length, style);
}
// Set the style for a number of characters.
void QsciLexerCustom::setStyling(int length, const QsciStyle &style)
{
setStyling(length, style.style());
}
// Set the attached editor.
void QsciLexerCustom::setEditor(QsciScintilla *new_editor)
{
if (editor())
disconnect(editor(), SIGNAL(SCN_STYLENEEDED(int)), this,
SLOT(handleStyleNeeded(int)));
QsciLexer::setEditor(new_editor);
if (editor())
connect(editor(), SIGNAL(SCN_STYLENEEDED(int)), this,
SLOT(handleStyleNeeded(int)));
}
// Return the number of style bits needed by the lexer.
int QsciLexerCustom::styleBitsNeeded() const
{
return 5;
}
// Handle a request to style some text.
void QsciLexerCustom::handleStyleNeeded(int pos)
{
int start = editor()->SendScintilla(QsciScintillaBase::SCI_GETENDSTYLED);
int line = editor()->SendScintilla(QsciScintillaBase::SCI_LINEFROMPOSITION,
start);
start = editor()->SendScintilla(QsciScintillaBase::SCI_POSITIONFROMLINE,
line);
if (start != pos)
styleText(start, pos);
}
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