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