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/****************************************************************************
** $Id: KoComplexText.h 484817 2005-12-02 00:53:59Z dfaure $
**
** Internal header file.
**
** Created :
**
** Copyright (C) 2001 Trolltech AS. All rights reserved.
**
** This file is part of the kernel module of the Qt GUI Toolkit.
**
** This file may be distributed under the terms of the Q Public License
** as defined by Trolltech AS of Norway and appearing in the file
** LICENSE.QPL included in the packaging of this file.
**
** This file may be distributed and/or modified under the terms of the
** GNU General Public License version 2 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.
**
** Licensees holding valid Qt Enterprise Edition or Qt Professional Edition
** licenses may use this file in accordance with the Qt Commercial License
** Agreement provided with the Software.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
** See http://www.trolltech.com/pricing.html or email [email protected] for
** information about Qt Commercial License Agreements.
** See http://www.trolltech.com/qpl/ for QPL licensing information.
** See http://www.trolltech.com/gpl/ for GPL licensing information.
**
** Contact [email protected] if any conditions of this licensing are
** not clear to you.
**
**********************************************************************/
#ifndef QCOMPLEXTEXT_H
#define QCOMPLEXTEXT_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists for the convenience
// of Qt Remote Control. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
//
#ifndef QT_H
#include <qstring.h>
#include <qpointarray.h>
#include <qfont.h>
#include <qpainter.h>
#include <qptrlist.h>
#include <qshared.h>
#endif // QT_H
#ifndef QT_NO_COMPLEXTEXT
// bidi helper classes. Internal to Qt
struct Q_EXPORT KoBidiStatus {
KoBidiStatus() {
eor = QChar::DirON;
lastStrong = QChar::DirON;
last = QChar:: DirON;
}
QChar::Direction eor;
QChar::Direction lastStrong;
QChar::Direction last;
};
struct Q_EXPORT KoBidiContext : public QShared {
// ### ref and deref parent?
KoBidiContext( uchar level, QChar::Direction embedding, KoBidiContext *parent = 0, bool override = FALSE );
~KoBidiContext();
unsigned char level;
bool override : 1;
QChar::Direction dir : 5;
KoBidiContext *parent;
};
struct Q_EXPORT KoBidiControl {
KoBidiControl() { context = 0; }
KoBidiControl( KoBidiContext *c, KoBidiStatus s)
{ context = c; if( context ) context->ref(); status = s; }
~KoBidiControl() { if ( context && context->deref() ) delete context; }
void setContext( KoBidiContext *c ) { if ( context == c ) return; if ( context && context->deref() ) delete context; context = c; context->ref(); }
KoBidiContext *context;
KoBidiStatus status;
};
struct Q_EXPORT KoTextRun {
KoTextRun(int _start, int _stop, KoBidiContext *context, QChar::Direction dir);
int start;
int stop;
// explicit + implicit levels here
uchar level;
};
class Q_EXPORT KoComplexText {
public:
enum Shape {
XIsolated,
XFinal,
XInitial,
XMedial
};
static Shape glyphVariant( const QString &str, int pos);
static Shape glyphVariantLogical( const QString &str, int pos);
static QString shapedString( const QString &str, int from = 0, int len = -1, QPainter::TextDirection dir = QPainter::Auto, const QFontMetrics *fm = 0);
static QChar shapedCharacter(const QString &str, int pos, const QFontMetrics *fm = 0);
// positions non spacing marks relative to the base character at position pos.
//static QPointArray positionMarks( QFontPrivate *f, const QString &str, int pos, QRect *boundingRect = 0 );
static QPtrList<KoTextRun> *bidiReorderLine( KoBidiControl *control, const QString &str, int start, int len,
QChar::Direction basicDir = QChar::DirON );
static QString bidiReorderString( const QString &str, QChar::Direction basicDir = QChar::DirON );
};
#endif //QT_NO_COMPLEXTEXT
#endif
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