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107 lines
2.6 KiB
107 lines
2.6 KiB
15 years ago
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/*
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* This file is part of the html renderer for KDE.
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*
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* Copyright (C) 2000 Lars Knoll (knoll@kde.org)
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* Copyright (C) 2003 Apple Computer, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public License
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* along with this library; see the file COPYING.LIB. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*
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*/
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#ifndef BIDI_H
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#define BIDI_H
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#include <qstring.h>
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namespace khtml {
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class RenderArena;
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class RenderBlock;
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class RenderObject;
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class InlineBox;
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class BidiContext {
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public:
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BidiContext(unsigned char level, QChar::Direction embedding, BidiContext *parent = 0, bool override = false);
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~BidiContext();
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void ref() const;
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void deref() const;
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unsigned char level;
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bool override : 1;
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QChar::Direction dir : 5;
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QChar::Direction basicDir : 5;
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BidiContext *parent;
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// refcounting....
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mutable int count;
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};
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struct BidiRun {
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BidiRun(int _start, int _stop, RenderObject *_obj, BidiContext *context, QChar::Direction dir)
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: start( _start ), stop( _stop ), obj( _obj ), box(0), nextRun(0)
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{
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if(dir == QChar::DirON) dir = context->dir;
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level = context->level;
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// add level of run (cases I1 & I2)
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if( level % 2 ) {
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if(dir == QChar::DirL || dir == QChar::DirAN || dir == QChar::DirEN)
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level++;
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} else {
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if( dir == QChar::DirR )
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level++;
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else if( dir == QChar::DirAN || dir == QChar::DirEN)
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level += 2;
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}
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}
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void detach(RenderArena* renderArena);
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// Overloaded new operator.
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void* operator new(size_t sz, RenderArena* renderArena) throw();
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// Overridden to prevent the normal delete from being called.
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void operator delete(void* ptr, size_t sz);
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private:
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// The normal operator new is disallowed.
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void* operator new(size_t sz) throw();
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public:
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int start;
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int stop;
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RenderObject *obj;
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InlineBox* box;
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// explicit + implicit levels here
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uchar level;
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bool compact : 1;
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BidiRun* nextRun;
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};
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struct BidiIterator;
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struct BidiState;
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}
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#endif
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