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-/****************************************************************************
-**
-** ???
-**
-** Copyright (C) 2010 Timothy Pearson and (C) 1992-2008 Trolltech ASA.
-**
-** This file is part of the kernel module of the TQt GUI Toolkit.
-**
-** 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 Trolltech ASA (or its successors, if any)
-** and the KDE Free TQt Foundation.
-**
-** 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@trolltech.com.
-**
-** Licensees holding valid TQt Commercial licenses may use this file in
-** accordance with the TQt Commercial License Agreement provided with
-** the Software.
-**
-** This file is provided "AS IS" with NO WARRANTY OF ANY KIND,
-** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR
-** A PARTICULAR PURPOSE. Trolltech reserves all rights not granted
-** herein.
-**
-**********************************************************************/
-
-#ifndef TQTEXTENGINE_P_H
-#define TQTEXTENGINE_P_H
-
-#include "tqtglobaldefines.h"
-
-#ifndef TQT_H
-#include "tqglobal.h"
-#include "tqstring.h"
-#include "tqnamespace.h"
-#include <private/tqfontdata_p.h>
-#endif // TQT_H
-
-#include <stdlib.h>
-#ifndef TQ_OS_TEMP
-#include <assert.h>
-#endif // TQ_OS_TEMP
-
-#ifdef USE_QT4
-
-// #include <private/qt4_qtextengine_p.h>
-
-#endif // USE_QT4
-
-#ifdef USE_QT4
-
-// class TQTextEngine : public QTextEngine {
-// public:
-// TQTextEngine( const TQString &str, TQFontPrivate *f ) : QTextEngine(str, convertToQFont(f)) {}
-//
-// enum Mode {
-// Full = 0x00,
-// NoBidi = 0x01,
-// SingleLine = 0x02,
-// WidthOnly = 0x07
-// };
-//
-// enum Edge {
-// Leading,
-// Trailing
-// };
-// enum ShaperFlag {
-// RightToLeft = 0x0001,
-// Mirrored = 0x0001
-// };
-// //
-// // // Interoperability
-// // QFont convertToQFont( TQFontPrivate *f );
-// };
-//
-// // Interoperability
-// inline QFont convertToQFont( TQFontPrivate *f ) {
-// QFont qf;
-// // Copy over every single #!$% parameter from the TQFontPrivate object [FIXME]
-// QFont qft(qf, f->painttqdevice);
-// return qft;
-// }
-//
-// struct TQScriptAnalysis
-// {
-// unsigned short script : 7;
-// unsigned short bidiLevel : 6; // Unicode Bidi algorithm embedding level (0-61)
-// unsigned short override : 1; // Set when in LRO/RLO embedding
-// unsigned short reserved : 2;
-// bool operator == ( const TQScriptAnalysis &other ) {
-// return
-// script == other.script &&
-// bidiLevel == other.bidiLevel;
-// // ###
-// // && override == other.override;
-// }
-//
-// };
-//
-// class TQFontEngine;
-//
-// struct TQScriptItem
-// {
-// inline TQScriptItem() : position( 0 ), isSpace( FALSE ), isTab( FALSE ),
-// isObject( FALSE ), hasPositioning( FALSE ),
-// descent( -1 ), ascent( -1 ), width( -1 ),
-// x( 0 ), y( 0 ), num_glyphs( 0 ), glyph_data_offset( 0 ),
-// fontEngine( 0 ) { }
-// int position;
-// TQScriptAnalysis analysis;
-// unsigned short isSpace : 1;
-// unsigned short isTab : 1;
-// unsigned short isObject : 1;
-// unsigned short hasPositioning : 1;
-// unsigned short complex : 1; // Windows only
-// unsigned short private_use : 1; // Windows only
-// unsigned short reserved : 10;
-// short descent;
-// int ascent;
-// int width;
-// int x;
-// int y;
-// int num_glyphs;
-// int glyph_data_offset;
-// TQFontEngine *fontEngine;
-// };
-
-#else // USE_QT4
-
-class TQFontPrivate;
-class TQString;
-
-class TQOpenType;
-class TQPainter;
-
-// this uses the same coordinate system as TQt, but a different one to freetype and Xft.
-// * y is usually negative, and is equal to the ascent.
-// * negative yoff means the following stuff is drawn higher up.
-// the characters bounding rect is given by TQRect( x,y,width,height), it's advance by
-// xoo and yoff
-struct glyph_metrics_t
-{
- inline glyph_metrics_t() {
- x = 100000;
- y = 100000;
- width = 0;
- height = 0;
- xoff = 0;
- yoff = 0;
- }
- inline glyph_metrics_t( int _x, int _y, int _width, int _height, int _xoff, int _yoff ) {
- x = _x;
- y = _y;
- width = _width;
- height = _height;
- xoff = _xoff;
- yoff = _yoff;
- }
- int x;
- int y;
- int width;
- int height;
- int xoff;
- int yoff;
-};
-
-#if defined( TQ_WS_X11 ) || defined ( TQ_WS_TQWS )
-typedef unsigned short glyph_t;
-
-struct qoffset_t {
- short x;
- short y;
-};
-
-typedef int advance_t;
-
-struct TQScriptAnalysis
-{
- unsigned short script : 7;
- unsigned short bidiLevel : 6; // Unicode Bidi algorithm embedding level (0-61)
- unsigned short override : 1; // Set when in LRO/RLO embedding
- unsigned short reserved : 2;
- bool operator == ( const TQScriptAnalysis &other ) {
- return
- script == other.script &&
- bidiLevel == other.bidiLevel;
- // ###
-// && override == other.override;
- }
-
-};
-
-#elif defined( TQ_WS_MAC )
-
-typedef unsigned short glyph_t;
-
-struct qoffset_t {
- short x;
- short y;
-};
-
-typedef int advance_t;
-
-struct TQScriptAnalysis
-{
- unsigned short script : 7;
- unsigned short bidiLevel : 6; // Unicode Bidi algorithm embedding level (0-61)
- unsigned short override : 1; // Set when in LRO/RLO embedding
- unsigned short reserved : 2;
- bool operator == ( const TQScriptAnalysis &other ) {
- return
- script == other.script &&
- bidiLevel == other.bidiLevel;
- // ###
-// && override == other.override;
- }
-
-};
-
-#elif defined( TQ_WS_WIN )
-
-// do not change the definitions below unless you know what you are doing!
-// it is designed to be compatible with the types found in uniscribe.
-
-typedef unsigned short glyph_t;
-
-struct qoffset_t {
- int x;
- int y;
-};
-
-typedef int advance_t;
-
-struct TQScriptAnalysis {
- unsigned short script :10;
- unsigned short rtl :1;
- unsigned short layoutRTL :1;
- unsigned short linkBefore :1;
- unsigned short linkAfter :1;
- unsigned short logicalOrder :1;
- unsigned short noGlyphIndex :1;
- unsigned short bidiLevel :5;
- unsigned short override :1;
- unsigned short inhibitSymSwap :1;
- unsigned short charShape :1;
- unsigned short digitSubstitute :1;
- unsigned short inhibitLigate :1;
- unsigned short fDisplayZWG :1;
- unsigned short arabicNumContext :1;
- unsigned short gcpClusters :1;
- unsigned short reserved :1;
- unsigned short engineReserved :2;
-};
-
-inline bool operator == ( const TQScriptAnalysis &sa1, const TQScriptAnalysis &sa2 )
-{
- return
- sa1.script == sa2.script &&
- sa1.bidiLevel == sa2.bidiLevel;
- // ###
-// && override == other.override;
-}
-
-#endif
-
-// enum and struct are made to be compatible with Uniscribe, dont change unless you know what you're doing.
-struct GlyphAttributes {
- // highest value means highest priority for justification. Justification is done by first inserting kashidas
- // starting with the highest priority positions, then stretching spaces, afterwards extending inter char
- // spacing, and last spacing between arabic words.
- // NoJustification is for example set for arabic where no Kashida can be inserted or for diacritics.
- enum Justification {
- NoJustification= 0, // Justification can't be applied after this glyph
- Arabic_Space = 1, // This glyph represents a space inside arabic text
- Character = 2, // Inter-character justification point follows this glyph
- Space = 4, // This glyph represents a blank outside an Arabic run
- Arabic_Normal = 7, // Normal Middle-Of-Word glyph that connects to the right (begin)
- Arabic_Waw = 8, // Next character is final form of Waw/Ain/Qaf/Fa
- Arabic_BaRa = 9, // Next two chars are Ba + Ra/Ya/AlefMaksura
- Arabic_Alef = 10, // Next character is final form of Alef/Tah/Lam/Kaf/Gaf
- Arabic_HaaDal = 11, // Next character is final form of Haa/Dal/Taa Marbutah
- Arabic_Seen = 12, // Initial or Medial form Of Seen/Sad
- Arabic_Kashida = 13 // Kashida(U+640) in middle of word
- };
- unsigned short justification :4; // Justification class
- unsigned short clusterStart :1; // First glyph of representation of cluster
- unsigned short mark :1; // needs to be positioned around base char
- unsigned short zeroWidth :1; // ZWJ, ZWNJ etc, with no width, currently used as "Don't print" for ZWSP
- unsigned short reserved :1;
- unsigned short combiningClass :8;
-};
-
-// also this is compatible to uniscribe. Do not change.
-struct TQCharAttributes {
- uchar softBreak :1; // Potential linebreak point _before_ this character
- uchar whiteSpace :1; // A tqunicode whitespace character, except NBSP, ZWNBSP
- uchar charStop :1; // Valid cursor position (for left/right arrow)
- uchar wordStop :1; // Valid cursor position (for ctrl + left/right arrow)
- uchar invalid :1;
- uchar reserved :3;
-};
-
-inline bool qIsZeroWidthChar(ushort uc)
-{
- return (uc >= 0x200b && uc <= 0x200f /* ZW Space, ZWNJ, ZWJ, LRM and RLM */)
- || (uc >= 0x2028 && uc <= 0x202f /* LS, PS, LRE, RLE, PDF, LRO, RLO, NNBSP */)
- || (uc >= 0x206a && uc <= 0x206f /* ISS, ASS, IAFS, AFS, NADS, NODS */);
-}
-
-class TQFontEngine;
-
-struct TQScriptItem
-{
- inline TQScriptItem() : position( 0 ), isSpace( FALSE ), isTab( FALSE ),
- isObject( FALSE ), hasPositioning( FALSE ),
- descent( -1 ), ascent( -1 ), width( -1 ),
- x( 0 ), y( 0 ), num_glyphs( 0 ), glyph_data_offset( 0 ),
- fontEngine( 0 ) { }
- int position;
- TQScriptAnalysis analysis;
- unsigned short isSpace : 1;
- unsigned short isTab : 1;
- unsigned short isObject : 1;
- unsigned short hasPositioning : 1;
- unsigned short complex : 1; // Windows only
- unsigned short private_use : 1; // Windows only
- unsigned short reserved : 10;
- short descent;
- int ascent;
- int width;
- int x;
- int y;
- int num_glyphs;
- int glyph_data_offset;
- TQFontEngine *fontEngine;
-};
-
-struct TQScriptItemArrayPrivate
-{
- unsigned int alloc;
- unsigned int size;
- TQScriptItem items[1];
-};
-
-class TQScriptItemArray
-{
-public:
- TQScriptItemArray() : d( 0 ) {}
- ~TQScriptItemArray();
-
- inline TQScriptItem &operator[] (int i) const {return d->items[i]; }
- inline void append( const TQScriptItem &item ) {
- if ( d->size == d->alloc )
- resize( d->size + 1 );
- d->items[d->size] = item;
- d->size++;
- }
- inline int size() const { return d ? d->size : 0; }
-
- void resize( int s );
- void clear();
-
- TQScriptItemArrayPrivate *d;
-private:
-#ifdef TQ_DISABLE_COPY
- TQScriptItemArray( const TQScriptItemArray & );
- TQScriptItemArray &operator = ( const TQScriptItemArray & );
-#endif
-};
-
-class TQFontPrivate;
-
-class TQTextEngine {
-public:
- TQTextEngine( const TQString &str, TQFontPrivate *f );
- ~TQTextEngine();
-
- enum Mode {
- Full = 0x00,
- NoBidi = 0x01,
- SingleLine = 0x02,
- WidthOnly = 0x07
- };
-
- void itemize( int mode = Full );
-
- static void bidiReorder( int numRuns, const TQ_UINT8 *levels, int *visualOrder );
-
- const TQCharAttributes *attributes();
- void tqshape( int item ) const;
-
- // ### we need something for justification
-
- enum Edge {
- Leading,
- Trailing
- };
- enum ShaperFlag {
- RightToLeft = 0x0001,
- Mirrored = 0x0001
- };
-
- int width( int charFrom, int numChars ) const;
- glyph_metrics_t boundingBox( int from, int len ) const;
-
- TQScriptItemArray items;
- TQString string;
- TQFontPrivate *fnt;
- int lineWidth;
- int widthUsed;
- int firstItemInLine;
- int currentItem;
- TQChar::Direction direction : 5;
- unsigned int haveCharAttributes : 1;
- unsigned int widthOnly : 1;
- unsigned int reserved : 25;
-
- int length( int item ) const {
- const TQScriptItem &si = items[item];
- int from = si.position;
- item++;
- return ( item < items.size() ? items[item].position : string.length() ) - from;
- }
- void splitItem( int item, int pos );
-
- unsigned short *logClustersPtr;
- glyph_t *glyphPtr;
- advance_t *advancePtr;
- qoffset_t *offsetsPtr;
- GlyphAttributes *glyphAttributesPtr;
-
- inline unsigned short *logClusters( const TQScriptItem *si ) const
- { return logClustersPtr+si->position; }
- inline glyph_t *glyphs( const TQScriptItem *si ) const
- { return glyphPtr+si->glyph_data_offset; }
- inline advance_t *advances( const TQScriptItem *si ) const
- { return advancePtr+si->glyph_data_offset; }
- inline qoffset_t *offsets( const TQScriptItem *si ) const
- { return offsetsPtr+si->glyph_data_offset; }
- inline GlyphAttributes *glyphAttributes( const TQScriptItem *si ) const
- { return glyphAttributesPtr+si->glyph_data_offset; }
-
- void reallocate( int totalGlyphs );
- inline void ensureSpace( int nGlyphs ) const {
- if ( num_glyphs - used < nGlyphs )
- ((TQTextEngine *)this)->reallocate( ( (used + nGlyphs + 16) >> 4 ) << 4 );
- }
-
- int allocated;
- void **memory;
- int num_glyphs;
- int used;
-};
-
-#endif
-
-#endif // USE_QT4 \ No newline at end of file
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